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authorWaldemar Brodkorb <wbx@openadk.org>2014-05-13 18:07:03 +0200
committerWaldemar Brodkorb <wbx@openadk.org>2014-05-13 18:07:26 +0200
commit3cf55e2bc095ac6dc345217c993f80d74c6b5714 (patch)
tree84773de439ee4137c60a25cd347adc0715a4b992 /package/openjdk7/patches
parentd7f94b4993de82698282bea85d494ea54a2da85a (diff)
fix openjdk build errors for arm target
Diffstat (limited to 'package/openjdk7/patches')
-rw-r--r--package/openjdk7/patches/openadk.patch6490
1 files changed, 6383 insertions, 107 deletions
diff --git a/package/openjdk7/patches/openadk.patch b/package/openjdk7/patches/openadk.patch
index dd31ed5ba..3001aff5b 100644
--- a/package/openjdk7/patches/openadk.patch
+++ b/package/openjdk7/patches/openadk.patch
@@ -12,11 +12,39 @@ diff -Nur icedtea-2.4.7.orig/Makefile.in icedtea-2.4.7/Makefile.in
patches/boot/demos.patch patches/boot/fphexconstants.patch \
diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk.patch
--- icedtea-2.4.7.orig/patches/openadk.patch 1970-01-01 01:00:00.000000000 +0100
-+++ icedtea-2.4.7/patches/openadk.patch 2014-05-08 21:02:03.459173373 +0200
-@@ -0,0 +1,733 @@
++++ icedtea-2.4.7/patches/openadk.patch 2014-05-13 16:57:07.173804037 +0200
+@@ -0,0 +1,7009 @@
++diff -Nur openjdk.orig/hotspot/make/linux/makefiles/zeroshark.make openjdk/hotspot/make/linux/makefiles/zeroshark.make
++--- openjdk.orig/hotspot/make/linux/makefiles/zeroshark.make 2014-02-20 19:51:45.000000000 +0100
+++++ openjdk/hotspot/make/linux/makefiles/zeroshark.make 2014-05-13 16:56:38.917714592 +0200
++@@ -39,20 +39,20 @@
++
++ offsets_arm.s: mkoffsets
++ @echo Generating assembler offsets
++- ./mkoffsets > $@
+++ $(QEMU) ./mkoffsets > $@
++
++ bytecodes_arm.s: bytecodes_arm.def mkbc
++ @echo Generating ARM assembler bytecode sequences
++- $(CXX_COMPILE) -E -x c++ - < $< | ./mkbc - $@ $(COMPILE_DONE)
+++ $(CXX_COMPILE) -E -x c++ - < $< | $(QEMU) ./mkbc - $@ $(COMPILE_DONE)
++
++ mkbc: $(GAMMADIR)/tools/mkbc.c
++ @echo Compiling mkbc tool
++- $(CC_COMPILE) -o $@ $< $(COMPILE_DONE)
+++ $(CC_COMPILE) -static -o $@ $< $(COMPILE_DONE)
++
++ mkoffsets: asm_helper.cpp
++ @echo Compiling offset generator
++ $(QUIETLY) $(REMOVE_TARGET)
++- $(CXX_COMPILE) -DSTATIC_OFFSETS -o $@ $< $(COMPILE_DONE)
+++ $(CXX_COMPILE) -static -DSTATIC_OFFSETS -o $@ $< $(COMPILE_DONE)
++
++ endif
++ endif
+diff -Nur openjdk.orig/hotspot/src/os/linux/vm/os_linux.cpp openjdk/hotspot/src/os/linux/vm/os_linux.cpp
-+--- openjdk.orig/hotspot/src/os/linux/vm/os_linux.cpp 2014-01-28 18:58:08.000000000 +0100
-++++ openjdk/hotspot/src/os/linux/vm/os_linux.cpp 2014-02-10 11:31:48.000000000 +0100
++--- openjdk.orig/hotspot/src/os/linux/vm/os_linux.cpp 2014-02-20 19:51:45.000000000 +0100
+++++ openjdk/hotspot/src/os/linux/vm/os_linux.cpp 2014-05-13 16:14:56.637091447 +0200
+@@ -112,7 +112,6 @@
+ # include <string.h>
+ # include <syscall.h>
@@ -48,7 +76,7 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk
+ return f;
+ }
+
-+@@ -5312,7 +5306,21 @@
++@@ -5329,7 +5323,21 @@
+ // Linux doesn't yet have a (official) notion of processor sets,
+ // so just return the system wide load average.
+ int os::loadavg(double loadavg[], int nelem) {
@@ -71,9 +99,6002 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk
+ }
+
+ void os::pause() {
++diff -Nur openjdk.orig/hotspot/src/os/linux/vm/os_linux.cpp.orig openjdk/hotspot/src/os/linux/vm/os_linux.cpp.orig
++--- openjdk.orig/hotspot/src/os/linux/vm/os_linux.cpp.orig 1970-01-01 01:00:00.000000000 +0100
+++++ openjdk/hotspot/src/os/linux/vm/os_linux.cpp.orig 2014-02-20 19:51:45.000000000 +0100
++@@ -0,0 +1,5989 @@
+++/*
+++ * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
+++ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+++ *
+++ * This code is free software; you can redistribute it and/or modify it
+++ * under the terms of the GNU General Public License version 2 only, as
+++ * published by the Free Software Foundation.
+++ *
+++ * This code is distributed in the hope that it will be useful, but WITHOUT
+++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+++ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+++ * version 2 for more details (a copy is included in the LICENSE file that
+++ * accompanied this code).
+++ *
+++ * You should have received a copy of the GNU General Public License version
+++ * 2 along with this work; if not, write to the Free Software Foundation,
+++ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+++ *
+++ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+++ * or visit www.oracle.com if you need additional information or have any
+++ * questions.
+++ *
+++ */
+++
+++// no precompiled headers
+++#include "classfile/classLoader.hpp"
+++#include "classfile/systemDictionary.hpp"
+++#include "classfile/vmSymbols.hpp"
+++#include "code/icBuffer.hpp"
+++#include "code/vtableStubs.hpp"
+++#include "compiler/compileBroker.hpp"
+++#include "interpreter/interpreter.hpp"
+++#include "jvm_linux.h"
+++#include "memory/allocation.inline.hpp"
+++#include "memory/filemap.hpp"
+++#include "mutex_linux.inline.hpp"
+++#include "oops/oop.inline.hpp"
+++#include "os_share_linux.hpp"
+++#include "prims/jniFastGetField.hpp"
+++#include "prims/jvm.h"
+++#include "prims/jvm_misc.hpp"
+++#include "runtime/arguments.hpp"
+++#include "runtime/extendedPC.hpp"
+++#include "runtime/globals.hpp"
+++#include "runtime/interfaceSupport.hpp"
+++#include "runtime/init.hpp"
+++#include "runtime/java.hpp"
+++#include "runtime/javaCalls.hpp"
+++#include "runtime/mutexLocker.hpp"
+++#include "runtime/objectMonitor.hpp"
+++#include "runtime/osThread.hpp"
+++#include "runtime/perfMemory.hpp"
+++#include "runtime/sharedRuntime.hpp"
+++#include "runtime/statSampler.hpp"
+++#include "runtime/stubRoutines.hpp"
+++#include "runtime/threadCritical.hpp"
+++#include "runtime/timer.hpp"
+++#include "services/attachListener.hpp"
+++#include "services/memTracker.hpp"
+++#include "services/runtimeService.hpp"
+++#include "thread_linux.inline.hpp"
+++#include "utilities/decoder.hpp"
+++#include "utilities/defaultStream.hpp"
+++#include "utilities/events.hpp"
+++#include "utilities/elfFile.hpp"
+++#include "utilities/growableArray.hpp"
+++#include "utilities/vmError.hpp"
+++#ifdef TARGET_ARCH_x86
+++# include "assembler_x86.inline.hpp"
+++# include "nativeInst_x86.hpp"
+++#endif
+++#ifdef TARGET_ARCH_sparc
+++# include "assembler_sparc.inline.hpp"
+++# include "nativeInst_sparc.hpp"
+++#endif
+++#ifdef TARGET_ARCH_zero
+++# include "assembler_zero.inline.hpp"
+++# include "nativeInst_zero.hpp"
+++#endif
+++#ifdef TARGET_ARCH_arm
+++# include "assembler_arm.inline.hpp"
+++# include "nativeInst_arm.hpp"
+++#endif
+++#ifdef TARGET_ARCH_ppc
+++# include "assembler_ppc.inline.hpp"
+++# include "nativeInst_ppc.hpp"
+++#endif
+++
+++// put OS-includes here
+++# include <sys/types.h>
+++# include <sys/mman.h>
+++# include <sys/stat.h>
+++# include <sys/select.h>
+++# include <pthread.h>
+++# include <signal.h>
+++# include <errno.h>
+++# include <dlfcn.h>
+++# include <stdio.h>
+++# include <unistd.h>
+++# include <sys/resource.h>
+++# include <pthread.h>
+++# include <sys/stat.h>
+++# include <sys/time.h>
+++# include <sys/times.h>
+++# include <sys/utsname.h>
+++# include <sys/socket.h>
+++# include <sys/wait.h>
+++# include <pwd.h>
+++# include <poll.h>
+++# include <semaphore.h>
+++# include <fcntl.h>
+++# include <string.h>
+++# include <syscall.h>
+++# include <sys/sysinfo.h>
+++# include <gnu/libc-version.h>
+++# include <sys/ipc.h>
+++# include <sys/shm.h>
+++# include <link.h>
+++# include <stdint.h>
+++# include <inttypes.h>
+++# include <sys/ioctl.h>
+++
+++#define MAX_PATH (2 * K)
+++
+++// for timer info max values which include all bits
+++#define ALL_64_BITS CONST64(0xFFFFFFFFFFFFFFFF)
+++
+++#define LARGEPAGES_BIT (1 << 6)
+++
+++#ifndef EM_AARCH64
+++#define EM_AARCH64 183 /* ARM AARCH64 */
+++#endif
+++
+++////////////////////////////////////////////////////////////////////////////////
+++// global variables
+++julong os::Linux::_physical_memory = 0;
+++
+++address os::Linux::_initial_thread_stack_bottom = NULL;
+++uintptr_t os::Linux::_initial_thread_stack_size = 0;
+++
+++int (*os::Linux::_clock_gettime)(clockid_t, struct timespec *) = NULL;
+++int (*os::Linux::_pthread_getcpuclockid)(pthread_t, clockid_t *) = NULL;
+++Mutex* os::Linux::_createThread_lock = NULL;
+++pthread_t os::Linux::_main_thread;
+++int os::Linux::_page_size = -1;
+++const int os::Linux::_vm_default_page_size = (8 * K);
+++bool os::Linux::_is_floating_stack = false;
+++bool os::Linux::_is_NPTL = false;
+++bool os::Linux::_supports_fast_thread_cpu_time = false;
+++const char * os::Linux::_glibc_version = NULL;
+++const char * os::Linux::_libpthread_version = NULL;
+++
+++static jlong initial_time_count=0;
+++
+++static int clock_tics_per_sec = 100;
+++
+++// For diagnostics to print a message once. see run_periodic_checks
+++static sigset_t check_signal_done;
+++static bool check_signals = true;;
+++
+++static pid_t _initial_pid = 0;
+++
+++/* Signal number used to suspend/resume a thread */
+++
+++/* do not use any signal number less than SIGSEGV, see 4355769 */
+++static int SR_signum = SIGUSR2;
+++sigset_t SR_sigset;
+++
+++/* Used to protect dlsym() calls */
+++static pthread_mutex_t dl_mutex;
+++
+++// Declarations
+++static void unpackTime(timespec* absTime, bool isAbsolute, jlong time);
+++
+++#ifdef JAVASE_EMBEDDED
+++class MemNotifyThread: public Thread {
+++ friend class VMStructs;
+++ public:
+++ virtual void run();
+++
+++ private:
+++ static MemNotifyThread* _memnotify_thread;
+++ int _fd;
+++
+++ public:
+++
+++ // Constructor
+++ MemNotifyThread(int fd);
+++
+++ // Tester
+++ bool is_memnotify_thread() const { return true; }
+++
+++ // Printing
+++ char* name() const { return (char*)"Linux MemNotify Thread"; }
+++
+++ // Returns the single instance of the MemNotifyThread
+++ static MemNotifyThread* memnotify_thread() { return _memnotify_thread; }
+++
+++ // Create and start the single instance of MemNotifyThread
+++ static void start();
+++};
+++#endif // JAVASE_EMBEDDED
+++
+++// utility functions
+++
+++static int SR_initialize();
+++static int SR_finalize();
+++
+++julong os::available_memory() {
+++ return Linux::available_memory();
+++}
+++
+++julong os::Linux::available_memory() {
+++ // values in struct sysinfo are "unsigned long"
+++ struct sysinfo si;
+++ sysinfo(&si);
+++
+++ return (julong)si.freeram * si.mem_unit;
+++}
+++
+++julong os::physical_memory() {
+++ return Linux::physical_memory();
+++}
+++
+++julong os::allocatable_physical_memory(julong size) {
+++#ifdef _LP64
+++ return size;
+++#else
+++ julong result = MIN2(size, (julong)3800*M);
+++ if (!is_allocatable(result)) {
+++ // See comments under solaris for alignment considerations
+++ julong reasonable_size = (julong)2*G - 2 * os::vm_page_size();
+++ result = MIN2(size, reasonable_size);
+++ }
+++ return result;
+++#endif // _LP64
+++}
+++
+++////////////////////////////////////////////////////////////////////////////////
+++// environment support
+++
+++bool os::getenv(const char* name, char* buf, int len) {
+++ const char* val = ::getenv(name);
+++ if (val != NULL && strlen(val) < (size_t)len) {
+++ strcpy(buf, val);
+++ return true;
+++ }
+++ if (len > 0) buf[0] = 0; // return a null string
+++ return false;
+++}
+++
+++
+++// Return true if user is running as root.
+++
+++bool os::have_special_privileges() {
+++ static bool init = false;
+++ static bool privileges = false;
+++ if (!init) {
+++ privileges = (getuid() != geteuid()) || (getgid() != getegid());
+++ init = true;
+++ }
+++ return privileges;
+++}
+++
+++
+++#ifndef SYS_gettid
+++// i386: 224, ia64: 1105, amd64: 186, sparc 143
+++#ifdef __ia64__
+++#define SYS_gettid 1105
+++#elif __i386__
+++#define SYS_gettid 224
+++#elif __amd64__
+++#define SYS_gettid 186
+++#elif __sparc__
+++#define SYS_gettid 143
+++#else
+++#error define gettid for the arch
+++#endif
+++#endif
+++
+++// Cpu architecture string
+++#if defined(ZERO)
+++static char cpu_arch[] = ZERO_LIBARCH;
+++#elif defined(IA64)
+++static char cpu_arch[] = "ia64";
+++#elif defined(IA32)
+++static char cpu_arch[] = "i386";
+++#elif defined(AMD64)
+++static char cpu_arch[] = "amd64";
+++#elif defined(ARM)
+++static char cpu_arch[] = "arm";
+++#elif defined(PPC)
+++static char cpu_arch[] = "ppc";
+++#elif defined(SPARC)
+++# ifdef _LP64
+++static char cpu_arch[] = "sparcv9";
+++# else
+++static char cpu_arch[] = "sparc";
+++# endif
+++#else
+++#error Add appropriate cpu_arch setting
+++#endif
+++
+++
+++// pid_t gettid()
+++//
+++// Returns the kernel thread id of the currently running thread. Kernel
+++// thread id is used to access /proc.
+++//
+++// (Note that getpid() on LinuxThreads returns kernel thread id too; but
+++// on NPTL, it returns the same pid for all threads, as required by POSIX.)
+++//
+++pid_t os::Linux::gettid() {
+++ int rslt = syscall(SYS_gettid);
+++ if (rslt == -1) {
+++ // old kernel, no NPTL support
+++ return getpid();
+++ } else {
+++ return (pid_t)rslt;
+++ }
+++}
+++
+++// Most versions of linux have a bug where the number of processors are
+++// determined by looking at the /proc file system. In a chroot environment,
+++// the system call returns 1. This causes the VM to act as if it is
+++// a single processor and elide locking (see is_MP() call).
+++static bool unsafe_chroot_detected = false;
+++static const char *unstable_chroot_error = "/proc file system not found.\n"
+++ "Java may be unstable running multithreaded in a chroot "
+++ "environment on Linux when /proc filesystem is not mounted.";
+++
+++void os::Linux::initialize_system_info() {
+++ set_processor_count(sysconf(_SC_NPROCESSORS_CONF));
+++ if (processor_count() == 1) {
+++ pid_t pid = os::Linux::gettid();
+++ char fname[32];
+++ jio_snprintf(fname, sizeof(fname), "/proc/%d", pid);
+++ FILE *fp = fopen(fname, "r");
+++ if (fp == NULL) {
+++ unsafe_chroot_detected = true;
+++ } else {
+++ fclose(fp);
+++ }
+++ }
+++ _physical_memory = (julong)sysconf(_SC_PHYS_PAGES) * (julong)sysconf(_SC_PAGESIZE);
+++ assert(processor_count() > 0, "linux error");
+++}
+++
+++void os::init_system_properties_values() {
+++// char arch[12];
+++// sysinfo(SI_ARCHITECTURE, arch, sizeof(arch));
+++
+++ // The next steps are taken in the product version:
+++ //
+++ // Obtain the JAVA_HOME value from the location of libjvm[_g].so.
+++ // This library should be located at:
+++ // <JAVA_HOME>/jre/lib/<arch>/{client|server}/libjvm[_g].so.
+++ //
+++ // If "/jre/lib/" appears at the right place in the path, then we
+++ // assume libjvm[_g].so is installed in a JDK and we use this path.
+++ //
+++ // Otherwise exit with message: "Could not create the Java virtual machine."
+++ //
+++ // The following extra steps are taken in the debugging version:
+++ //
+++ // If "/jre/lib/" does NOT appear at the right place in the path
+++ // instead of exit check for $JAVA_HOME environment variable.
+++ //
+++ // If it is defined and we are able to locate $JAVA_HOME/jre/lib/<arch>,
+++ // then we append a fake suffix "hotspot/libjvm[_g].so" to this path so
+++ // it looks like libjvm[_g].so is installed there
+++ // <JAVA_HOME>/jre/lib/<arch>/hotspot/libjvm[_g].so.
+++ //
+++ // Otherwise exit.
+++ //
+++ // Important note: if the location of libjvm.so changes this
+++ // code needs to be changed accordingly.
+++
+++ // The next few definitions allow the code to be verbatim:
+++#define malloc(n) (char*)NEW_C_HEAP_ARRAY(char, (n), mtInternal)
+++#define getenv(n) ::getenv(n)
+++
+++/*
+++ * See ld(1):
+++ * The linker uses the following search paths to locate required
+++ * shared libraries:
+++ * 1: ...
+++ * ...
+++ * 7: The default directories, normally /lib and /usr/lib.
+++ */
+++#if defined(AMD64) || defined(_LP64) && (defined(SPARC) || defined(PPC) || defined(S390) || defined(AARCH64))
+++#define DEFAULT_LIBPATH "/usr/lib64:/lib64:/lib:/usr/lib"
+++#else
+++#define DEFAULT_LIBPATH "/lib:/usr/lib"
+++#endif
+++
+++#define EXTENSIONS_DIR "/lib/ext"
+++#define ENDORSED_DIR "/lib/endorsed"
+++#define REG_DIR "/usr/java/packages"
+++
+++ {
+++ /* sysclasspath, java_home, dll_dir */
+++ {
+++ char *home_path;
+++ char *dll_path;
+++ char *pslash;
+++ char buf[MAXPATHLEN];
+++ os::jvm_path(buf, sizeof(buf));
+++
+++ // Found the full path to libjvm.so.
+++ // Now cut the path to <java_home>/jre if we can.
+++ *(strrchr(buf, '/')) = '\0'; /* get rid of /libjvm.so */
+++ pslash = strrchr(buf, '/');
+++ if (pslash != NULL)
+++ *pslash = '\0'; /* get rid of /{client|server|hotspot} */
+++ dll_path = malloc(strlen(buf) + 1);
+++ if (dll_path == NULL)
+++ return;
+++ strcpy(dll_path, buf);
+++ Arguments::set_dll_dir(dll_path);
+++
+++ if (pslash != NULL) {
+++ pslash = strrchr(buf, '/');
+++ if (pslash != NULL) {
+++ *pslash = '\0'; /* get rid of /<arch> */
+++ pslash = strrchr(buf, '/');
+++ if (pslash != NULL)
+++ *pslash = '\0'; /* get rid of /lib */
+++ }
+++ }
+++
+++ home_path = malloc(strlen(buf) + 1);
+++ if (home_path == NULL)
+++ return;
+++ strcpy(home_path, buf);
+++ Arguments::set_java_home(home_path);
+++
+++ if (!set_boot_path('/', ':'))
+++ return;
+++ }
+++
+++ /*
+++ * Where to look for native libraries
+++ *
+++ * Note: Due to a legacy implementation, most of the library path
+++ * is set in the launcher. This was to accomodate linking restrictions
+++ * on legacy Linux implementations (which are no longer supported).
+++ * Eventually, all the library path setting will be done here.
+++ *
+++ * However, to prevent the proliferation of improperly built native
+++ * libraries, the new path component /usr/java/packages is added here.
+++ * Eventually, all the library path setting will be done here.
+++ */
+++ {
+++ char *ld_library_path;
+++
+++ /*
+++ * Construct the invariant part of ld_library_path. Note that the
+++ * space for the colon and the trailing null are provided by the
+++ * nulls included by the sizeof operator (so actually we allocate
+++ * a byte more than necessary).
+++ */
+++ ld_library_path = (char *) malloc(sizeof(REG_DIR) + sizeof("/lib/") +
+++ strlen(cpu_arch) + sizeof(DEFAULT_LIBPATH));
+++ sprintf(ld_library_path, REG_DIR "/lib/%s:" DEFAULT_LIBPATH, cpu_arch);
+++
+++ /*
+++ * Get the user setting of LD_LIBRARY_PATH, and prepended it. It
+++ * should always exist (until the legacy problem cited above is
+++ * addressed).
+++ */
+++ char *v = getenv("LD_LIBRARY_PATH");
+++ if (v != NULL) {
+++ char *t = ld_library_path;
+++ /* That's +1 for the colon and +1 for the trailing '\0' */
+++ ld_library_path = (char *) malloc(strlen(v) + 1 + strlen(t) + 1);
+++ sprintf(ld_library_path, "%s:%s", v, t);
+++ }
+++ Arguments::set_library_path(ld_library_path);
+++ }
+++
+++ /*
+++ * Extensions directories.
+++ *
+++ * Note that the space for the colon and the trailing null are provided
+++ * by the nulls included by the sizeof operator (so actually one byte more
+++ * than necessary is allocated).
+++ */
+++ {
+++ char *buf = malloc(strlen(Arguments::get_java_home()) +
+++ sizeof(EXTENSIONS_DIR) + sizeof(REG_DIR) + sizeof(EXTENSIONS_DIR));
+++ sprintf(buf, "%s" EXTENSIONS_DIR ":" REG_DIR EXTENSIONS_DIR,
+++ Arguments::get_java_home());
+++ Arguments::set_ext_dirs(buf);
+++ }
+++
+++ /* Endorsed standards default directory. */
+++ {
+++ char * buf;
+++ buf = malloc(strlen(Arguments::get_java_home()) + sizeof(ENDORSED_DIR));
+++ sprintf(buf, "%s" ENDORSED_DIR, Arguments::get_java_home());
+++ Arguments::set_endorsed_dirs(buf);
+++ }
+++ }
+++
+++#undef malloc
+++#undef getenv
+++#undef EXTENSIONS_DIR
+++#undef ENDORSED_DIR
+++
+++ // Done
+++ return;
+++}
+++
+++////////////////////////////////////////////////////////////////////////////////
+++// breakpoint support
+++
+++void os::breakpoint() {
+++ BREAKPOINT;
+++}
+++
+++extern "C" void breakpoint() {
+++ // use debugger to set breakpoint here
+++}
+++
+++////////////////////////////////////////////////////////////////////////////////
+++// signal support
+++
+++debug_only(static bool signal_sets_initialized = false);
+++static sigset_t unblocked_sigs, vm_sigs, allowdebug_blocked_sigs;
+++
+++bool os::Linux::is_sig_ignored(int sig) {
+++ struct sigaction oact;
+++ sigaction(sig, (struct sigaction*)NULL, &oact);
+++ void* ohlr = oact.sa_sigaction ? CAST_FROM_FN_PTR(void*, oact.sa_sigaction)
+++ : CAST_FROM_FN_PTR(void*, oact.sa_handler);
+++ if (ohlr == CAST_FROM_FN_PTR(void*, SIG_IGN))
+++ return true;
+++ else
+++ return false;
+++}
+++
+++void os::Linux::signal_sets_init() {
+++ // Should also have an assertion stating we are still single-threaded.
+++ assert(!signal_sets_initialized, "Already initialized");
+++ // Fill in signals that are necessarily unblocked for all threads in
+++ // the VM. Currently, we unblock the following signals:
+++ // SHUTDOWN{1,2,3}_SIGNAL: for shutdown hooks support (unless over-ridden
+++ // by -Xrs (=ReduceSignalUsage));
+++ // BREAK_SIGNAL which is unblocked only by the VM thread and blocked by all
+++ // other threads. The "ReduceSignalUsage" boolean tells us not to alter
+++ // the dispositions or masks wrt these signals.
+++ // Programs embedding the VM that want to use the above signals for their
+++ // own purposes must, at this time, use the "-Xrs" option to prevent
+++ // interference with shutdown hooks and BREAK_SIGNAL thread dumping.
+++ // (See bug 4345157, and other related bugs).
+++ // In reality, though, unblocking these signals is really a nop, since
+++ // these signals are not blocked by default.
+++ sigemptyset(&unblocked_sigs);
+++ sigemptyset(&allowdebug_blocked_sigs);
+++ sigaddset(&unblocked_sigs, SIGILL);
+++ sigaddset(&unblocked_sigs, SIGSEGV);
+++ sigaddset(&unblocked_sigs, SIGBUS);
+++ sigaddset(&unblocked_sigs, SIGFPE);
+++ sigaddset(&unblocked_sigs, SR_signum);
+++
+++ if (!ReduceSignalUsage) {
+++ if (!os::Linux::is_sig_ignored(SHUTDOWN1_SIGNAL)) {
+++ sigaddset(&unblocked_sigs, SHUTDOWN1_SIGNAL);
+++ sigaddset(&allowdebug_blocked_sigs, SHUTDOWN1_SIGNAL);
+++ }
+++ if (!os::Linux::is_sig_ignored(SHUTDOWN2_SIGNAL)) {
+++ sigaddset(&unblocked_sigs, SHUTDOWN2_SIGNAL);
+++ sigaddset(&allowdebug_blocked_sigs, SHUTDOWN2_SIGNAL);
+++ }
+++ if (!os::Linux::is_sig_ignored(SHUTDOWN3_SIGNAL)) {
+++ sigaddset(&unblocked_sigs, SHUTDOWN3_SIGNAL);
+++ sigaddset(&allowdebug_blocked_sigs, SHUTDOWN3_SIGNAL);
+++ }
+++ }
+++ // Fill in signals that are blocked by all but the VM thread.
+++ sigemptyset(&vm_sigs);
+++ if (!ReduceSignalUsage)
+++ sigaddset(&vm_sigs, BREAK_SIGNAL);
+++ debug_only(signal_sets_initialized = true);
+++
+++}
+++
+++// These are signals that are unblocked while a thread is running Java.
+++// (For some reason, they get blocked by default.)
+++sigset_t* os::Linux::unblocked_signals() {
+++ assert(signal_sets_initialized, "Not initialized");
+++ return &unblocked_sigs;
+++}
+++
+++// These are the signals that are blocked while a (non-VM) thread is
+++// running Java. Only the VM thread handles these signals.
+++sigset_t* os::Linux::vm_signals() {
+++ assert(signal_sets_initialized, "Not initialized");
+++ return &vm_sigs;
+++}
+++
+++// These are signals that are blocked during cond_wait to allow debugger in
+++sigset_t* os::Linux::allowdebug_blocked_signals() {
+++ assert(signal_sets_initialized, "Not initialized");
+++ return &allowdebug_blocked_sigs;
+++}
+++
+++void os::Linux::hotspot_sigmask(Thread* thread) {
+++
+++ //Save caller's signal mask before setting VM signal mask
+++ sigset_t caller_sigmask;
+++ pthread_sigmask(SIG_BLOCK, NULL, &caller_sigmask);
+++
+++ OSThread* osthread = thread->osthread();
+++ osthread->set_caller_sigmask(caller_sigmask);
+++
+++ pthread_sigmask(SIG_UNBLOCK, os::Linux::unblocked_signals(), NULL);
+++
+++ if (!ReduceSignalUsage) {
+++ if (thread->is_VM_thread()) {
+++ // Only the VM thread handles BREAK_SIGNAL ...
+++ pthread_sigmask(SIG_UNBLOCK, vm_signals(), NULL);
+++ } else {
+++ // ... all other threads block BREAK_SIGNAL
+++ pthread_sigmask(SIG_BLOCK, vm_signals(), NULL);
+++ }
+++ }
+++}
+++
+++//////////////////////////////////////////////////////////////////////////////
+++// detecting pthread library
+++
+++void os::Linux::libpthread_init() {
+++ // Save glibc and pthread version strings. Note that _CS_GNU_LIBC_VERSION
+++ // and _CS_GNU_LIBPTHREAD_VERSION are supported in glibc >= 2.3.2. Use a
+++ // generic name for earlier versions.
+++ // Define macros here so we can build HotSpot on old systems.
+++# ifndef _CS_GNU_LIBC_VERSION
+++# define _CS_GNU_LIBC_VERSION 2
+++# endif
+++# ifndef _CS_GNU_LIBPTHREAD_VERSION
+++# define _CS_GNU_LIBPTHREAD_VERSION 3
+++# endif
+++
+++ size_t n = confstr(_CS_GNU_LIBC_VERSION, NULL, 0);
+++ if (n > 0) {
+++ char *str = (char *)malloc(n, mtInternal);
+++ confstr(_CS_GNU_LIBC_VERSION, str, n);
+++ os::Linux::set_glibc_version(str);
+++ } else {
+++ // _CS_GNU_LIBC_VERSION is not supported, try gnu_get_libc_version()
+++ static char _gnu_libc_version[32];
+++ jio_snprintf(_gnu_libc_version, sizeof(_gnu_libc_version),
+++ "glibc %s %s", gnu_get_libc_version(), gnu_get_libc_release());
+++ os::Linux::set_glibc_version(_gnu_libc_version);
+++ }
+++
+++ n = confstr(_CS_GNU_LIBPTHREAD_VERSION, NULL, 0);
+++ if (n > 0) {
+++ char *str = (char *)malloc(n, mtInternal);
+++ confstr(_CS_GNU_LIBPTHREAD_VERSION, str, n);
+++ // Vanilla RH-9 (glibc 2.3.2) has a bug that confstr() always tells
+++ // us "NPTL-0.29" even we are running with LinuxThreads. Check if this
+++ // is the case. LinuxThreads has a hard limit on max number of threads.
+++ // So sysconf(_SC_THREAD_THREADS_MAX) will return a positive value.
+++ // On the other hand, NPTL does not have such a limit, sysconf()
+++ // will return -1 and errno is not changed. Check if it is really NPTL.
+++ if (strcmp(os::Linux::glibc_version(), "glibc 2.3.2") == 0 &&
+++ strstr(str, "NPTL") &&
+++ sysconf(_SC_THREAD_THREADS_MAX) > 0) {
+++ free(str);
+++ os::Linux::set_libpthread_version("linuxthreads");
+++ } else {
+++ os::Linux::set_libpthread_version(str);
+++ }
+++ } else {
+++ // glibc before 2.3.2 only has LinuxThreads.
+++ os::Linux::set_libpthread_version("linuxthreads");
+++ }
+++
+++ if (strstr(libpthread_version(), "NPTL")) {
+++ os::Linux::set_is_NPTL();
+++ } else {
+++ os::Linux::set_is_LinuxThreads();
+++ }
+++
+++ // LinuxThreads have two flavors: floating-stack mode, which allows variable
+++ // stack size; and fixed-stack mode. NPTL is always floating-stack.
+++ if (os::Linux::is_NPTL() || os::Linux::supports_variable_stack_size()) {
+++ os::Linux::set_is_floating_stack();
+++ }
+++}
+++
+++/////////////////////////////////////////////////////////////////////////////
+++// thread stack
+++
+++// Force Linux kernel to expand current thread stack. If "bottom" is close
+++// to the stack guard, caller should block all signals.
+++//
+++// MAP_GROWSDOWN:
+++// A special mmap() flag that is used to implement thread stacks. It tells
+++// kernel that the memory region should extend downwards when needed. This
+++// allows early versions of LinuxThreads to only mmap the first few pages
+++// when creating a new thread. Linux kernel will automatically expand thread
+++// stack as needed (on page faults).
+++//
+++// However, because the memory region of a MAP_GROWSDOWN stack can grow on
+++// demand, if a page fault happens outside an already mapped MAP_GROWSDOWN
+++// region, it's hard to tell if the fault is due to a legitimate stack
+++// access or because of reading/writing non-exist memory (e.g. buffer
+++// overrun). As a rule, if the fault happens below current stack pointer,
+++// Linux kernel does not expand stack, instead a SIGSEGV is sent to the
+++// application (see Linux kernel fault.c).
+++//
+++// This Linux feature can cause SIGSEGV when VM bangs thread stack for
+++// stack overflow detection.
+++//
+++// Newer version of LinuxThreads (since glibc-2.2, or, RH-7.x) and NPTL do
+++// not use this flag. However, the stack of initial thread is not created
+++// by pthread, it is still MAP_GROWSDOWN. Also it's possible (though
+++// unlikely) that user code can create a thread with MAP_GROWSDOWN stack
+++// and then attach the thread to JVM.
+++//
+++// To get around the problem and allow stack banging on Linux, we need to
+++// manually expand thread stack after receiving the SIGSEGV.
+++//
+++// There are two ways to expand thread stack to address "bottom", we used
+++// both of them in JVM before 1.5:
+++// 1. adjust stack pointer first so that it is below "bottom", and then
+++// touch "bottom"
+++// 2. mmap() the page in question
+++//
+++// Now alternate signal stack is gone, it's harder to use 2. For instance,
+++// if current sp is already near the lower end of page 101, and we need to
+++// call mmap() to map page 100, it is possible that part of the mmap() frame
+++// will be placed in page 100. When page 100 is mapped, it is zero-filled.
+++// That will destroy the mmap() frame and cause VM to crash.
+++//
+++// The following code works by adjusting sp first, then accessing the "bottom"
+++// page to force a page fault. Linux kernel will then automatically expand the
+++// stack mapping.
+++//
+++// _expand_stack_to() assumes its frame size is less than page size, which
+++// should always be true if the function is not inlined.
+++
+++#if __GNUC__ < 3 // gcc 2.x does not support noinline attribute
+++#define NOINLINE
+++#else
+++#define NOINLINE __attribute__ ((noinline))
+++#endif
+++
+++static void _expand_stack_to(address bottom) NOINLINE;
+++
+++static void _expand_stack_to(address bottom) {
+++ address sp;
+++ size_t size;
+++ volatile char *p;
+++
+++ // Adjust bottom to point to the largest address within the same page, it
+++ // gives us a one-page buffer if alloca() allocates slightly more memory.
+++ bottom = (address)align_size_down((uintptr_t)bottom, os::Linux::page_size());
+++ bottom += os::Linux::page_size() - 1;
+++
+++ // sp might be slightly above current stack pointer; if that's the case, we
+++ // will alloca() a little more space than necessary, which is OK. Don't use
+++ // os::current_stack_pointer(), as its result can be slightly below current
+++ // stack pointer, causing us to not alloca enough to reach "bottom".
+++ sp = (address)&sp;
+++
+++ if (sp > bottom) {
+++ size = sp - bottom;
+++ p = (volatile char *)alloca(size);
+++ assert(p != NULL && p <= (volatile char *)bottom, "alloca problem?");
+++ p[0] = '\0';
+++ }
+++}
+++
+++bool os::Linux::manually_expand_stack(JavaThread * t, address addr) {
+++ assert(t!=NULL, "just checking");
+++ assert(t->osthread()->expanding_stack(), "expand should be set");
+++ assert(t->stack_base() != NULL, "stack_base was not initialized");
+++
+++ if (addr < t->stack_base() && addr >= t->stack_yellow_zone_base()) {
+++ sigset_t mask_all, old_sigset;
+++ sigfillset(&mask_all);
+++ pthread_sigmask(SIG_SETMASK, &mask_all, &old_sigset);
+++ _expand_stack_to(addr);
+++ pthread_sigmask(SIG_SETMASK, &old_sigset, NULL);
+++ return true;
+++ }
+++ return false;
+++}
+++
+++//////////////////////////////////////////////////////////////////////////////
+++// create new thread
+++
+++static address highest_vm_reserved_address();
+++
+++// check if it's safe to start a new thread
+++static bool _thread_safety_check(Thread* thread) {
+++ if (os::Linux::is_LinuxThreads() && !os::Linux::is_floating_stack()) {
+++ // Fixed stack LinuxThreads (SuSE Linux/x86, and some versions of Redhat)
+++ // Heap is mmap'ed at lower end of memory space. Thread stacks are
+++ // allocated (MAP_FIXED) from high address space. Every thread stack
+++ // occupies a fixed size slot (usually 2Mbytes, but user can change
+++ // it to other values if they rebuild LinuxThreads).
+++ //
+++ // Problem with MAP_FIXED is that mmap() can still succeed even part of
+++ // the memory region has already been mmap'ed. That means if we have too
+++ // many threads and/or very large heap, eventually thread stack will
+++ // collide with heap.
+++ //
+++ // Here we try to prevent heap/stack collision by comparing current
+++ // stack bottom with the highest address that has been mmap'ed by JVM
+++ // plus a safety margin for memory maps created by native code.
+++ //
+++ // This feature can be disabled by setting ThreadSafetyMargin to 0
+++ //
+++ if (ThreadSafetyMargin > 0) {
+++ address stack_bottom = os::current_stack_base() - os::current_stack_size();
+++
+++ // not safe if our stack extends below the safety margin
+++ return stack_bottom - ThreadSafetyMargin >= highest_vm_reserved_address();
+++ } else {
+++ return true;
+++ }
+++ } else {
+++ // Floating stack LinuxThreads or NPTL:
+++ // Unlike fixed stack LinuxThreads, thread stacks are not MAP_FIXED. When
+++ // there's not enough space left, pthread_create() will fail. If we come
+++ // here, that means enough space has been reserved for stack.
+++ return true;
+++ }
+++}
+++
+++// Thread start routine for all newly created threads
+++static void *java_start(Thread *thread) {
+++ // Try to randomize the cache line index of hot stack frames.
+++ // This helps when threads of the same stack traces evict each other's
+++ // cache lines. The threads can be either from the same JVM instance, or
+++ // from different JVM instances. The benefit is especially true for
+++ // processors with hyperthreading technology.
+++ static int counter = 0;
+++ int pid = os::current_process_id();
+++ alloca(((pid ^ counter++) & 7) * 128);
+++
+++ ThreadLocalStorage::set_thread(thread);
+++
+++ OSThread* osthread = thread->osthread();
+++ Monitor* sync = osthread->startThread_lock();
+++
+++ // non floating stack LinuxThreads needs extra check, see above
+++ if (!_thread_safety_check(thread)) {
+++ // notify parent thread
+++ MutexLockerEx ml(sync, Mutex::_no_safepoint_check_flag);
+++ osthread->set_state(ZOMBIE);
+++ sync->notify_all();
+++ return NULL;
+++ }
+++
+++ // thread_id is kernel thread id (similar to Solaris LWP id)
+++ osthread->set_thread_id(os::Linux::gettid());
+++
+++ if (UseNUMA) {
+++ int lgrp_id = os::numa_get_group_id();
+++ if (lgrp_id != -1) {
+++ thread->set_lgrp_id(lgrp_id);
+++ }
+++ }
+++ // initialize signal mask for this thread
+++ os::Linux::hotspot_sigmask(thread);
+++
+++ // initialize floating point control register
+++ os::Linux::init_thread_fpu_state();
+++
+++ // handshaking with parent thread
+++ {
+++ MutexLockerEx ml(sync, Mutex::_no_safepoint_check_flag);
+++
+++ // notify parent thread
+++ osthread->set_state(INITIALIZED);
+++ sync->notify_all();
+++
+++ // wait until os::start_thread()
+++ while (osthread->get_state() == INITIALIZED) {
+++ sync->wait(Mutex::_no_safepoint_check_flag);
+++ }
+++ }
+++
+++ // call one more level start routine
+++ thread->run();
+++
+++ return 0;
+++}
+++
+++bool os::create_thread(Thread* thread, ThreadType thr_type, size_t stack_size) {
+++ assert(thread->osthread() == NULL, "caller responsible");
+++
+++ // Allocate the OSThread object
+++ OSThread* osthread = new OSThread(NULL, NULL);
+++ if (osthread == NULL) {
+++ return false;
+++ }
+++
+++ // set the correct thread state
+++ osthread->set_thread_type(thr_type);
+++
+++ // Initial state is ALLOCATED but not INITIALIZED
+++ osthread->set_state(ALLOCATED);
+++
+++ thread->set_osthread(osthread);
+++
+++ // init thread attributes
+++ pthread_attr_t attr;
+++ pthread_attr_init(&attr);
+++ pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
+++
+++ // stack size
+++ if (os::Linux::supports_variable_stack_size()) {
+++ // calculate stack size if it's not specified by caller
+++ if (stack_size == 0) {
+++ stack_size = os::Linux::default_stack_size(thr_type);
+++
+++ switch (thr_type) {
+++ case os::java_thread:
+++ // Java threads use ThreadStackSize which default value can be
+++ // changed with the flag -Xss
+++ assert (JavaThread::stack_size_at_create() > 0, "this should be set");
+++ stack_size = JavaThread::stack_size_at_create();
+++ break;
+++ case os::compiler_thread:
+++ if (CompilerThreadStackSize > 0) {
+++ stack_size = (size_t)(CompilerThreadStackSize * K);
+++ break;
+++ } // else fall through:
+++ // use VMThreadStackSize if CompilerThreadStackSize is not defined
+++ case os::vm_thread:
+++ case os::pgc_thread:
+++ case os::cgc_thread:
+++ case os::watcher_thread:
+++ if (VMThreadStackSize > 0) stack_size = (size_t)(VMThreadStackSize * K);
+++ break;
+++ }
+++ }
+++
+++ stack_size = MAX2(stack_size, os::Linux::min_stack_allowed);
+++ pthread_attr_setstacksize(&attr, stack_size);
+++ } else {
+++ // let pthread_create() pick the default value.
+++ }
+++
+++ // glibc guard page
+++ pthread_attr_setguardsize(&attr, os::Linux::default_guard_size(thr_type));
+++
+++ ThreadState state;
+++
+++ {
+++ // Serialize thread creation if we are running with fixed stack LinuxThreads
+++ bool lock = os::Linux::is_LinuxThreads() && !os::Linux::is_floating_stack();
+++ if (lock) {
+++ os::Linux::createThread_lock()->lock_without_safepoint_check();
+++ }
+++
+++ pthread_t tid;
+++ int ret = pthread_create(&tid, &attr, (void* (*)(void*)) java_start, thread);
+++
+++ pthread_attr_destroy(&attr);
+++
+++ if (ret != 0) {
+++ if (PrintMiscellaneous && (Verbose || WizardMode)) {
+++ perror("pthread_create()");
+++ }
+++ // Need to clean up stuff we've allocated so far
+++ thread->set_osthread(NULL);
+++ delete osthread;
+++ if (lock) os::Linux::createThread_lock()->unlock();
+++ return false;
+++ }
+++
+++ // Store pthread info into the OSThread
+++ osthread->set_pthread_id(tid);
+++
+++ // Wait until child thread is either initialized or aborted
+++ {
+++ Monitor* sync_with_child = osthread->startThread_lock();
+++ MutexLockerEx ml(sync_with_child, Mutex::_no_safepoint_check_flag);
+++ while ((state = osthread->get_state()) == ALLOCATED) {
+++ sync_with_child->wait(Mutex::_no_safepoint_check_flag);
+++ }
+++ }
+++
+++ if (lock) {
+++ os::Linux::createThread_lock()->unlock();
+++ }
+++ }
+++
+++ // Aborted due to thread limit being reached
+++ if (state == ZOMBIE) {
+++ thread->set_osthread(NULL);
+++ delete osthread;
+++ return false;
+++ }
+++
+++ // The thread is returned suspended (in state INITIALIZED),
+++ // and is started higher up in the call chain
+++ assert(state == INITIALIZED, "race condition");
+++ return true;
+++}
+++
+++/////////////////////////////////////////////////////////////////////////////
+++// attach existing thread
+++
+++// bootstrap the main thread
+++bool os::create_main_thread(JavaThread* thread) {
+++ assert(os::Linux::_main_thread == pthread_self(), "should be called inside main thread");
+++ return create_attached_thread(thread);
+++}
+++
+++bool os::create_attached_thread(JavaThread* thread) {
+++#ifdef ASSERT
+++ thread->verify_not_published();
+++#endif
+++
+++ // Allocate the OSThread object
+++ OSThread* osthread = new OSThread(NULL, NULL);
+++
+++ if (osthread == NULL) {
+++ return false;
+++ }
+++
+++ // Store pthread info into the OSThread
+++ osthread->set_thread_id(os::Linux::gettid());
+++ osthread->set_pthread_id(::pthread_self());
+++
+++ // initialize floating point control register
+++ os::Linux::init_thread_fpu_state();
+++
+++ // Initial thread state is RUNNABLE
+++ osthread->set_state(RUNNABLE);
+++
+++ thread->set_osthread(osthread);
+++
+++ if (UseNUMA) {
+++ int lgrp_id = os::numa_get_group_id();
+++ if (lgrp_id != -1) {
+++ thread->set_lgrp_id(lgrp_id);
+++ }
+++ }
+++
+++ if (os::Linux::is_initial_thread()) {
+++ // If current thread is initial thread, its stack is mapped on demand,
+++ // see notes about MAP_GROWSDOWN. Here we try to force kernel to map
+++ // the entire stack region to avoid SEGV in stack banging.
+++ // It is also useful to get around the heap-stack-gap problem on SuSE
+++ // kernel (see 4821821 for details). We first expand stack to the top
+++ // of yellow zone, then enable stack yellow zone (order is significant,
+++ // enabling yellow zone first will crash JVM on SuSE Linux), so there
+++ // is no gap between the last two virtual memory regions.
+++
+++ JavaThread *jt = (JavaThread *)thread;
+++ address addr = jt->stack_yellow_zone_base();
+++ assert(addr != NULL, "initialization problem?");
+++ assert(jt->stack_available(addr) > 0, "stack guard should not be enabled");
+++
+++ osthread->set_expanding_stack();
+++ os::Linux::manually_expand_stack(jt, addr);
+++ osthread->clear_expanding_stack();
+++ }
+++
+++ // initialize signal mask for this thread
+++ // and save the caller's signal mask
+++ os::Linux::hotspot_sigmask(thread);
+++
+++ return true;
+++}
+++
+++void os::pd_start_thread(Thread* thread) {
+++ OSThread * osthread = thread->osthread();
+++ assert(osthread->get_state() != INITIALIZED, "just checking");
+++ Monitor* sync_with_child = osthread->startThread_lock();
+++ MutexLockerEx ml(sync_with_child, Mutex::_no_safepoint_check_flag);
+++ sync_with_child->notify();
+++}
+++
+++// Free Linux resources related to the OSThread
+++void os::free_thread(OSThread* osthread) {
+++ assert(osthread != NULL, "osthread not set");
+++
+++ if (Thread::current()->osthread() == osthread) {
+++ // Restore caller's signal mask
+++ sigset_t sigmask = osthread->caller_sigmask();
+++ pthread_sigmask(SIG_SETMASK, &sigmask, NULL);
+++ }
+++
+++ delete osthread;
+++}
+++
+++//////////////////////////////////////////////////////////////////////////////
+++// thread local storage
+++
+++int os::allocate_thread_local_storage() {
+++ pthread_key_t key;
+++ int rslt = pthread_key_create(&key, NULL);
+++ assert(rslt == 0, "cannot allocate thread local storage");
+++ return (int)key;
+++}
+++
+++// Note: This is currently not used by VM, as we don't destroy TLS key
+++// on VM exit.
+++void os::free_thread_local_storage(int index) {
+++ int rslt = pthread_key_delete((pthread_key_t)index);
+++ assert(rslt == 0, "invalid index");
+++}
+++
+++void os::thread_local_storage_at_put(int index, void* value) {
+++ int rslt = pthread_setspecific((pthread_key_t)index, value);
+++ assert(rslt == 0, "pthread_setspecific failed");
+++}
+++
+++extern "C" Thread* get_thread() {
+++ return ThreadLocalStorage::thread();
+++}
+++
+++//////////////////////////////////////////////////////////////////////////////
+++// initial thread
+++
+++// Check if current thread is the initial thread, similar to Solaris thr_main.
+++bool os::Linux::is_initial_thread(void) {
+++ char dummy;
+++ // If called before init complete, thread stack bottom will be null.
+++ // Can be called if fatal error occurs before initialization.
+++ if (initial_thread_stack_bottom() == NULL) return false;
+++ assert(initial_thread_stack_bottom() != NULL &&
+++ initial_thread_stack_size() != 0,
+++ "os::init did not locate initial thread's stack region");
+++ if ((address)&dummy >= initial_thread_stack_bottom() &&
+++ (address)&dummy < initial_thread_stack_bottom() + initial_thread_stack_size())
+++ return true;
+++ else return false;
+++}
+++
+++// Find the virtual memory area that contains addr
+++static bool find_vma(address addr, address* vma_low, address* vma_high) {
+++ FILE *fp = fopen("/proc/self/maps", "r");
+++ if (fp) {
+++ address low, high;
+++ while (!feof(fp)) {
+++ if (fscanf(fp, "%p-%p", &low, &high) == 2) {
+++ if (low <= addr && addr < high) {
+++ if (vma_low) *vma_low = low;
+++ if (vma_high) *vma_high = high;
+++ fclose (fp);
+++ return true;
+++ }
+++ }
+++ for (;;) {
+++ int ch = fgetc(fp);
+++ if (ch == EOF || ch == (int)'\n') break;
+++ }
+++ }
+++ fclose(fp);
+++ }
+++ return false;
+++}
+++
+++// Locate initial thread stack. This special handling of initial thread stack
+++// is needed because pthread_getattr_np() on most (all?) Linux distros returns
+++// bogus value for initial thread.
+++void os::Linux::capture_initial_stack(size_t max_size) {
+++ // stack size is the easy part, get it from RLIMIT_STACK
+++ size_t stack_size;
+++ struct rlimit rlim;
+++ getrlimit(RLIMIT_STACK, &rlim);
+++ stack_size = rlim.rlim_cur;
+++
+++ // 6308388: a bug in ld.so will relocate its own .data section to the
+++ // lower end of primordial stack; reduce ulimit -s value a little bit
+++ // so we won't install guard page on ld.so's data section.
+++ stack_size -= 2 * page_size();
+++
+++ // 4441425: avoid crash with "unlimited" stack size on SuSE 7.1 or Redhat
+++ // 7.1, in both cases we will get 2G in return value.
+++ // 4466587: glibc 2.2.x compiled w/o "--enable-kernel=2.4.0" (RH 7.0,
+++ // SuSE 7.2, Debian) can not handle alternate signal stack correctly
+++ // for initial thread if its stack size exceeds 6M. Cap it at 2M,
+++ // in case other parts in glibc still assumes 2M max stack size.
+++ // FIXME: alt signal stack is gone, maybe we can relax this constraint?
+++#ifndef IA64
+++ if (stack_size > 2 * K * K) stack_size = 2 * K * K;
+++#else
+++ // Problem still exists RH7.2 (IA64 anyway) but 2MB is a little small
+++ if (stack_size > 4 * K * K) stack_size = 4 * K * K;
+++#endif
+++
+++ // Try to figure out where the stack base (top) is. This is harder.
+++ //
+++ // When an application is started, glibc saves the initial stack pointer in
+++ // a global variable "__libc_stack_end", which is then used by system
+++ // libraries. __libc_stack_end should be pretty close to stack top. The
+++ // variable is available since the very early days. However, because it is
+++ // a private interface, it could disappear in the future.
+++ //
+++ // Linux kernel saves start_stack information in /proc/<pid>/stat. Similar
+++ // to __libc_stack_end, it is very close to stack top, but isn't the real
+++ // stack top. Note that /proc may not exist if VM is running as a chroot
+++ // program, so reading /proc/<pid>/stat could fail. Also the contents of
+++ // /proc/<pid>/stat could change in the future (though unlikely).
+++ //
+++ // We try __libc_stack_end first. If that doesn't work, look for
+++ // /proc/<pid>/stat. If neither of them works, we use current stack pointer
+++ // as a hint, which should work well in most cases.
+++
+++ uintptr_t stack_start;
+++
+++ // try __libc_stack_end first
+++ uintptr_t *p = (uintptr_t *)dlsym(RTLD_DEFAULT, "__libc_stack_end");
+++ if (p && *p) {
+++ stack_start = *p;
+++ } else {
+++ // see if we can get the start_stack field from /proc/self/stat
+++ FILE *fp;
+++ int pid;
+++ char state;
+++ int ppid;
+++ int pgrp;
+++ int session;
+++ int nr;
+++ int tpgrp;
+++ unsigned long flags;
+++ unsigned long minflt;
+++ unsigned long cminflt;
+++ unsigned long majflt;
+++ unsigned long cmajflt;
+++ unsigned long utime;
+++ unsigned long stime;
+++ long cutime;
+++ long cstime;
+++ long prio;
+++ long nice;
+++ long junk;
+++ long it_real;
+++ uintptr_t start;
+++ uintptr_t vsize;
+++ intptr_t rss;
+++ uintptr_t rsslim;
+++ uintptr_t scodes;
+++ uintptr_t ecode;
+++ int i;
+++
+++ // Figure what the primordial thread stack base is. Code is inspired
+++ // by email from Hans Boehm. /proc/self/stat begins with current pid,
+++ // followed by command name surrounded by parentheses, state, etc.
+++ char stat[2048];
+++ int statlen;
+++
+++ fp = fopen("/proc/self/stat", "r");
+++ if (fp) {
+++ statlen = fread(stat, 1, 2047, fp);
+++ stat[statlen] = '\0';
+++ fclose(fp);
+++
+++ // Skip pid and the command string. Note that we could be dealing with
+++ // weird command names, e.g. user could decide to rename java launcher
+++ // to "java 1.4.2 :)", then the stat file would look like
+++ // 1234 (java 1.4.2 :)) R ... ...
+++ // We don't really need to know the command string, just find the last
+++ // occurrence of ")" and then start parsing from there. See bug 4726580.
+++ char * s = strrchr(stat, ')');
+++
+++ i = 0;
+++ if (s) {
+++ // Skip blank chars
+++ do s++; while (isspace(*s));
+++
+++#define _UFM UINTX_FORMAT
+++#define _DFM INTX_FORMAT
+++
+++ /* 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 */
+++ /* 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 */
+++ i = sscanf(s, "%c %d %d %d %d %d %lu %lu %lu %lu %lu %lu %lu %ld %ld %ld %ld %ld %ld " _UFM _UFM _DFM _UFM _UFM _UFM _UFM,
+++ &state, /* 3 %c */
+++ &ppid, /* 4 %d */
+++ &pgrp, /* 5 %d */
+++ &session, /* 6 %d */
+++ &nr, /* 7 %d */
+++ &tpgrp, /* 8 %d */
+++ &flags, /* 9 %lu */
+++ &minflt, /* 10 %lu */
+++ &cminflt, /* 11 %lu */
+++ &majflt, /* 12 %lu */
+++ &cmajflt, /* 13 %lu */
+++ &utime, /* 14 %lu */
+++ &stime, /* 15 %lu */
+++ &cutime, /* 16 %ld */
+++ &cstime, /* 17 %ld */
+++ &prio, /* 18 %ld */
+++ &nice, /* 19 %ld */
+++ &junk, /* 20 %ld */
+++ &it_real, /* 21 %ld */
+++ &start, /* 22 UINTX_FORMAT */
+++ &vsize, /* 23 UINTX_FORMAT */
+++ &rss, /* 24 INTX_FORMAT */
+++ &rsslim, /* 25 UINTX_FORMAT */
+++ &scodes, /* 26 UINTX_FORMAT */
+++ &ecode, /* 27 UINTX_FORMAT */
+++ &stack_start); /* 28 UINTX_FORMAT */
+++ }
+++
+++#undef _UFM
+++#undef _DFM
+++
+++ if (i != 28 - 2) {
+++ assert(false, "Bad conversion from /proc/self/stat");
+++ // product mode - assume we are the initial thread, good luck in the
+++ // embedded case.
+++ warning("Can't detect initial thread stack location - bad conversion");
+++ stack_start = (uintptr_t) &rlim;
+++ }
+++ } else {
+++ // For some reason we can't open /proc/self/stat (for example, running on
+++ // FreeBSD with a Linux emulator, or inside chroot), this should work for
+++ // most cases, so don't abort:
+++ warning("Can't detect initial thread stack location - no /proc/self/stat");
+++ stack_start = (uintptr_t) &rlim;
+++ }
+++ }
+++
+++ // Now we have a pointer (stack_start) very close to the stack top, the
+++ // next thing to do is to figure out the exact location of stack top. We
+++ // can find out the virtual memory area that contains stack_start by
+++ // reading /proc/self/maps, it should be the last vma in /proc/self/maps,
+++ // and its upper limit is the real stack top. (again, this would fail if
+++ // running inside chroot, because /proc may not exist.)
+++
+++ uintptr_t stack_top;
+++ address low, high;
+++ if (find_vma((address)stack_start, &low, &high)) {
+++ // success, "high" is the true stack top. (ignore "low", because initial
+++ // thread stack grows on demand, its real bottom is high - RLIMIT_STACK.)
+++ stack_top = (uintptr_t)high;
+++ } else {
+++ // failed, likely because /proc/self/maps does not exist
+++ warning("Can't detect initial thread stack location - find_vma failed");
+++ // best effort: stack_start is normally within a few pages below the real
+++ // stack top, use it as stack top, and reduce stack size so we won't put
+++ // guard page outside stack.
+++ stack_top = stack_start;
+++ stack_size -= 16 * page_size();
+++ }
+++
+++ // stack_top could be partially down the page so align it
+++ stack_top = align_size_up(stack_top, page_size());
+++
+++ if (max_size && stack_size > max_size) {
+++ _initial_thread_stack_size = max_size;
+++ } else {
+++ _initial_thread_stack_size = stack_size;
+++ }
+++
+++ _initial_thread_stack_size = align_size_down(_initial_thread_stack_size, page_size());
+++ _initial_thread_stack_bottom = (address)stack_top - _initial_thread_stack_size;
+++}
+++
+++////////////////////////////////////////////////////////////////////////////////
+++// time support
+++
+++// Time since start-up in seconds to a fine granularity.
+++// Used by VMSelfDestructTimer and the MemProfiler.
+++double os::elapsedTime() {
+++
+++ return (double)(os::elapsed_counter()) * 0.000001;
+++}
+++
+++jlong os::elapsed_counter() {
+++ timeval time;
+++ int status = gettimeofday(&time, NULL);
+++ return jlong(time.tv_sec) * 1000 * 1000 + jlong(time.tv_usec) - initial_time_count;
+++}
+++
+++jlong os::elapsed_frequency() {
+++ return (1000 * 1000);
+++}
+++
+++// For now, we say that linux does not support vtime. I have no idea
+++// whether it can actually be made to (DLD, 9/13/05).
+++
+++bool os::supports_vtime() { return false; }
+++bool os::enable_vtime() { return false; }
+++bool os::vtime_enabled() { return false; }
+++double os::elapsedVTime() {
+++ // better than nothing, but not much
+++ return elapsedTime();
+++}
+++
+++jlong os::javaTimeMillis() {
+++ timeval time;
+++ int status = gettimeofday(&time, NULL);
+++ assert(status != -1, "linux error");
+++ return jlong(time.tv_sec) * 1000 + jlong(time.tv_usec / 1000);
+++}
+++
+++#ifndef CLOCK_MONOTONIC
+++#define CLOCK_MONOTONIC (1)
+++#endif
+++
+++void os::Linux::clock_init() {
+++ // we do dlopen's in this particular order due to bug in linux
+++ // dynamical loader (see 6348968) leading to crash on exit
+++ void* handle = dlopen("librt.so.1", RTLD_LAZY);
+++ if (handle == NULL) {
+++ handle = dlopen("librt.so", RTLD_LAZY);
+++ }
+++
+++ if (handle) {
+++ int (*clock_getres_func)(clockid_t, struct timespec*) =
+++ (int(*)(clockid_t, struct timespec*))dlsym(handle, "clock_getres");
+++ int (*clock_gettime_func)(clockid_t, struct timespec*) =
+++ (int(*)(clockid_t, struct timespec*))dlsym(handle, "clock_gettime");
+++ if (clock_getres_func && clock_gettime_func) {
+++ // See if monotonic clock is supported by the kernel. Note that some
+++ // early implementations simply return kernel jiffies (updated every
+++ // 1/100 or 1/1000 second). It would be bad to use such a low res clock
+++ // for nano time (though the monotonic property is still nice to have).
+++ // It's fixed in newer kernels, however clock_getres() still returns
+++ // 1/HZ. We check if clock_getres() works, but will ignore its reported
+++ // resolution for now. Hopefully as people move to new kernels, this
+++ // won't be a problem.
+++ struct timespec res;
+++ struct timespec tp;
+++ if (clock_getres_func (CLOCK_MONOTONIC, &res) == 0 &&
+++ clock_gettime_func(CLOCK_MONOTONIC, &tp) == 0) {
+++ // yes, monotonic clock is supported
+++ _clock_gettime = clock_gettime_func;
+++ } else {
+++ // close librt if there is no monotonic clock
+++ dlclose(handle);
+++ }
+++ }
+++ }
+++}
+++
+++#ifndef SYS_clock_getres
+++
+++#if defined(IA32) || defined(AMD64)
+++#define SYS_clock_getres IA32_ONLY(266) AMD64_ONLY(229)
+++#define sys_clock_getres(x,y) ::syscall(SYS_clock_getres, x, y)
+++#else
+++#warning "SYS_clock_getres not defined for this platform, disabling fast_thread_cpu_time"
+++#define sys_clock_getres(x,y) -1
+++#endif
+++
+++#else
+++#define sys_clock_getres(x,y) ::syscall(SYS_clock_getres, x, y)
+++#endif
+++
+++void os::Linux::fast_thread_clock_init() {
+++ if (!UseLinuxPosixThreadCPUClocks) {
+++ return;
+++ }
+++ clockid_t clockid;
+++ struct timespec tp;
+++ int (*pthread_getcpuclockid_func)(pthread_t, clockid_t *) =
+++ (int(*)(pthread_t, clockid_t *)) dlsym(RTLD_DEFAULT, "pthread_getcpuclockid");
+++
+++ // Switch to using fast clocks for thread cpu time if
+++ // the sys_clock_getres() returns 0 error code.
+++ // Note, that some kernels may support the current thread
+++ // clock (CLOCK_THREAD_CPUTIME_ID) but not the clocks
+++ // returned by the pthread_getcpuclockid().
+++ // If the fast Posix clocks are supported then the sys_clock_getres()
+++ // must return at least tp.tv_sec == 0 which means a resolution
+++ // better than 1 sec. This is extra check for reliability.
+++
+++ if(pthread_getcpuclockid_func &&
+++ pthread_getcpuclockid_func(_main_thread, &clockid) == 0 &&
+++ sys_clock_getres(clockid, &tp) == 0 && tp.tv_sec == 0) {
+++
+++ _supports_fast_thread_cpu_time = true;
+++ _pthread_getcpuclockid = pthread_getcpuclockid_func;
+++ }
+++}
+++
+++jlong os::javaTimeNanos() {
+++ if (Linux::supports_monotonic_clock()) {
+++ struct timespec tp;
+++ int status = Linux::clock_gettime(CLOCK_MONOTONIC, &tp);
+++ assert(status == 0, "gettime error");
+++ jlong result = jlong(tp.tv_sec) * (1000 * 1000 * 1000) + jlong(tp.tv_nsec);
+++ return result;
+++ } else {
+++ timeval time;
+++ int status = gettimeofday(&time, NULL);
+++ assert(status != -1, "linux error");
+++ jlong usecs = jlong(time.tv_sec) * (1000 * 1000) + jlong(time.tv_usec);
+++ return 1000 * usecs;
+++ }
+++}
+++
+++void os::javaTimeNanos_info(jvmtiTimerInfo *info_ptr) {
+++ if (Linux::supports_monotonic_clock()) {
+++ info_ptr->max_value = ALL_64_BITS;
+++
+++ // CLOCK_MONOTONIC - amount of time since some arbitrary point in the past
+++ info_ptr->may_skip_backward = false; // not subject to resetting or drifting
+++ info_ptr->may_skip_forward = false; // not subject to resetting or drifting
+++ } else {
+++ // gettimeofday - based on time in seconds since the Epoch thus does not wrap
+++ info_ptr->max_value = ALL_64_BITS;
+++
+++ // gettimeofday is a real time clock so it skips
+++ info_ptr->may_skip_backward = true;
+++ info_ptr->may_skip_forward = true;
+++ }
+++
+++ info_ptr->kind = JVMTI_TIMER_ELAPSED; // elapsed not CPU time
+++}
+++
+++// Return the real, user, and system times in seconds from an
+++// arbitrary fixed point in the past.
+++bool os::getTimesSecs(double* process_real_time,
+++ double* process_user_time,
+++ double* process_system_time) {
+++ struct tms ticks;
+++ clock_t real_ticks = times(&ticks);
+++
+++ if (real_ticks == (clock_t) (-1)) {
+++ return false;
+++ } else {
+++ double ticks_per_second = (double) clock_tics_per_sec;
+++ *process_user_time = ((double) ticks.tms_utime) / ticks_per_second;
+++ *process_system_time = ((double) ticks.tms_stime) / ticks_per_second;
+++ *process_real_time = ((double) real_ticks) / ticks_per_second;
+++
+++ return true;
+++ }
+++}
+++
+++
+++char * os::local_time_string(char *buf, size_t buflen) {
+++ struct tm t;
+++ time_t long_time;
+++ time(&long_time);
+++ localtime_r(&long_time, &t);
+++ jio_snprintf(buf, buflen, "%d-%02d-%02d %02d:%02d:%02d",
+++ t.tm_year + 1900, t.tm_mon + 1, t.tm_mday,
+++ t.tm_hour, t.tm_min, t.tm_sec);
+++ return buf;
+++}
+++
+++struct tm* os::localtime_pd(const time_t* clock, struct tm* res) {
+++ return localtime_r(clock, res);
+++}
+++
+++////////////////////////////////////////////////////////////////////////////////
+++// runtime exit support
+++
+++// Note: os::shutdown() might be called very early during initialization, or
+++// called from signal handler. Before adding something to os::shutdown(), make
+++// sure it is async-safe and can handle partially initialized VM.
+++void os::shutdown() {
+++
+++ // allow PerfMemory to attempt cleanup of any persistent resources
+++ perfMemory_exit();
+++
+++ // needs to remove object in file system
+++ AttachListener::abort();
+++
+++ // flush buffered output, finish log files
+++ ostream_abort();
+++
+++ // Check for abort hook
+++ abort_hook_t abort_hook = Arguments::abort_hook();
+++ if (abort_hook != NULL) {
+++ abort_hook();
+++ }
+++
+++}
+++
+++// Note: os::abort() might be called very early during initialization, or
+++// called from signal handler. Before adding something to os::abort(), make
+++// sure it is async-safe and can handle partially initialized VM.
+++void os::abort(bool dump_core) {
+++ os::shutdown();
+++ if (dump_core) {
+++#ifndef PRODUCT
+++ fdStream out(defaultStream::output_fd());
+++ out.print_raw("Current thread is ");
+++ char buf[16];
+++ jio_snprintf(buf, sizeof(buf), UINTX_FORMAT, os::current_thread_id());
+++ out.print_raw_cr(buf);
+++ out.print_raw_cr("Dumping core ...");
+++#endif
+++ ::abort(); // dump core
+++ }
+++
+++ ::exit(1);
+++}
+++
+++// Die immediately, no exit hook, no abort hook, no cleanup.
+++void os::die() {
+++ // _exit() on LinuxThreads only kills current thread
+++ ::abort();
+++}
+++
+++// unused on linux for now.
+++void os::set_error_file(const char *logfile) {}
+++
+++
+++// This method is a copy of JDK's sysGetLastErrorString
+++// from src/solaris/hpi/src/system_md.c
+++
+++size_t os::lasterror(char *buf, size_t len) {
+++
+++ if (errno == 0) return 0;
+++
+++ const char *s = ::strerror(errno);
+++ size_t n = ::strlen(s);
+++ if (n >= len) {
+++ n = len - 1;
+++ }
+++ ::strncpy(buf, s, n);
+++ buf[n] = '\0';
+++ return n;
+++}
+++
+++intx os::current_thread_id() { return (intx)pthread_self(); }
+++int os::current_process_id() {
+++
+++ // Under the old linux thread library, linux gives each thread
+++ // its own process id. Because of this each thread will return
+++ // a different pid if this method were to return the result
+++ // of getpid(2). Linux provides no api that returns the pid
+++ // of the launcher thread for the vm. This implementation
+++ // returns a unique pid, the pid of the launcher thread
+++ // that starts the vm 'process'.
+++
+++ // Under the NPTL, getpid() returns the same pid as the
+++ // launcher thread rather than a unique pid per thread.
+++ // Use gettid() if you want the old pre NPTL behaviour.
+++
+++ // if you are looking for the result of a call to getpid() that
+++ // returns a unique pid for the calling thread, then look at the
+++ // OSThread::thread_id() method in osThread_linux.hpp file
+++
+++ return (int)(_initial_pid ? _initial_pid : getpid());
+++}
+++
+++// DLL functions
+++
+++const char* os::dll_file_extension() { return ".so"; }
+++
+++// This must be hard coded because it's the system's temporary
+++// directory not the java application's temp directory, ala java.io.tmpdir.
+++const char* os::get_temp_directory() { return "/tmp"; }
+++
+++static bool file_exists(const char* filename) {
+++ struct stat statbuf;
+++ if (filename == NULL || strlen(filename) == 0) {
+++ return false;
+++ }
+++ return os::stat(filename, &statbuf) == 0;
+++}
+++
+++void os::dll_build_name(char* buffer, size_t buflen,
+++ const char* pname, const char* fname) {
+++ // Copied from libhpi
+++ const size_t pnamelen = pname ? strlen(pname) : 0;
+++
+++ // Quietly truncate on buffer overflow. Should be an error.
+++ if (pnamelen + strlen(fname) + 10 > (size_t) buflen) {
+++ *buffer = '\0';
+++ return;
+++ }
+++
+++ if (pnamelen == 0) {
+++ snprintf(buffer, buflen, "lib%s.so", fname);
+++ } else if (strchr(pname, *os::path_separator()) != NULL) {
+++ int n;
+++ char** pelements = split_path(pname, &n);
+++ for (int i = 0 ; i < n ; i++) {
+++ // Really shouldn't be NULL, but check can't hurt
+++ if (pelements[i] == NULL || strlen(pelements[i]) == 0) {
+++ continue; // skip the empty path values
+++ }
+++ snprintf(buffer, buflen, "%s/lib%s.so", pelements[i], fname);
+++ if (file_exists(buffer)) {
+++ break;
+++ }
+++ }
+++ // release the storage
+++ for (int i = 0 ; i < n ; i++) {
+++ if (pelements[i] != NULL) {
+++ FREE_C_HEAP_ARRAY(char, pelements[i], mtInternal);
+++ }
+++ }
+++ if (pelements != NULL) {
+++ FREE_C_HEAP_ARRAY(char*, pelements, mtInternal);
+++ }
+++ } else {
+++ snprintf(buffer, buflen, "%s/lib%s.so", pname, fname);
+++ }
+++}
+++
+++const char* os::get_current_directory(char *buf, int buflen) {
+++ return getcwd(buf, buflen);
+++}
+++
+++// check if addr is inside libjvm[_g].so
+++bool os::address_is_in_vm(address addr) {
+++ static address libjvm_base_addr;
+++ Dl_info dlinfo;
+++
+++ if (libjvm_base_addr == NULL) {
+++ if (dladdr(CAST_FROM_FN_PTR(void *, os::address_is_in_vm), &dlinfo) != 0) {
+++ libjvm_base_addr = (address)dlinfo.dli_fbase;
+++ }
+++ assert(libjvm_base_addr !=NULL, "Cannot obtain base address for libjvm");
+++ }
+++
+++ if (dladdr((void *)addr, &dlinfo) != 0) {
+++ if (libjvm_base_addr == (address)dlinfo.dli_fbase) return true;
+++ }
+++
+++ return false;
+++}
+++
+++bool os::dll_address_to_function_name(address addr, char *buf,
+++ int buflen, int *offset) {
+++ // buf is not optional, but offset is optional
+++ assert(buf != NULL, "sanity check");
+++
+++ Dl_info dlinfo;
+++
+++ if (dladdr((void*)addr, &dlinfo) != 0) {
+++ // see if we have a matching symbol
+++ if (dlinfo.dli_saddr != NULL && dlinfo.dli_sname != NULL) {
+++ if (!Decoder::demangle(dlinfo.dli_sname, buf, buflen)) {
+++ jio_snprintf(buf, buflen, "%s", dlinfo.dli_sname);
+++ }
+++ if (offset != NULL) *offset = addr - (address)dlinfo.dli_saddr;
+++ return true;
+++ }
+++ // no matching symbol so try for just file info
+++ if (dlinfo.dli_fname != NULL && dlinfo.dli_fbase != NULL) {
+++ if (Decoder::decode((address)(addr - (address)dlinfo.dli_fbase),
+++ buf, buflen, offset, dlinfo.dli_fname)) {
+++ return true;
+++ }
+++ }
+++ }
+++
+++ buf[0] = '\0';
+++ if (offset != NULL) *offset = -1;
+++ return false;
+++}
+++
+++struct _address_to_library_name {
+++ address addr; // input : memory address
+++ size_t buflen; // size of fname
+++ char* fname; // output: library name
+++ address base; // library base addr
+++};
+++
+++static int address_to_library_name_callback(struct dl_phdr_info *info,
+++ size_t size, void *data) {
+++ int i;
+++ bool found = false;
+++ address libbase = NULL;
+++ struct _address_to_library_name * d = (struct _address_to_library_name *)data;
+++
+++ // iterate through all loadable segments
+++ for (i = 0; i < info->dlpi_phnum; i++) {
+++ address segbase = (address)(info->dlpi_addr + info->dlpi_phdr[i].p_vaddr);
+++ if (info->dlpi_phdr[i].p_type == PT_LOAD) {
+++ // base address of a library is the lowest address of its loaded
+++ // segments.
+++ if (libbase == NULL || libbase > segbase) {
+++ libbase = segbase;
+++ }
+++ // see if 'addr' is within current segment
+++ if (segbase <= d->addr &&
+++ d->addr < segbase + info->dlpi_phdr[i].p_memsz) {
+++ found = true;
+++ }
+++ }
+++ }
+++
+++ // dlpi_name is NULL or empty if the ELF file is executable, return 0
+++ // so dll_address_to_library_name() can fall through to use dladdr() which
+++ // can figure out executable name from argv[0].
+++ if (found && info->dlpi_name && info->dlpi_name[0]) {
+++ d->base = libbase;
+++ if (d->fname) {
+++ jio_snprintf(d->fname, d->buflen, "%s", info->dlpi_name);
+++ }
+++ return 1;
+++ }
+++ return 0;
+++}
+++
+++bool os::dll_address_to_library_name(address addr, char* buf,
+++ int buflen, int* offset) {
+++ // buf is not optional, but offset is optional
+++ assert(buf != NULL, "sanity check");
+++
+++ Dl_info dlinfo;
+++ struct _address_to_library_name data;
+++
+++ // There is a bug in old glibc dladdr() implementation that it could resolve
+++ // to wrong library name if the .so file has a base address != NULL. Here
+++ // we iterate through the program headers of all loaded libraries to find
+++ // out which library 'addr' really belongs to. This workaround can be
+++ // removed once the minimum requirement for glibc is moved to 2.3.x.
+++ data.addr = addr;
+++ data.fname = buf;
+++ data.buflen = buflen;
+++ data.base = NULL;
+++ int rslt = dl_iterate_phdr(address_to_library_name_callback, (void *)&data);
+++
+++ if (rslt) {
+++ // buf already contains library name
+++ if (offset) *offset = addr - data.base;
+++ return true;
+++ }
+++ if (dladdr((void*)addr, &dlinfo) != 0) {
+++ if (dlinfo.dli_fname != NULL) {
+++ jio_snprintf(buf, buflen, "%s", dlinfo.dli_fname);
+++ }
+++ if (dlinfo.dli_fbase != NULL && offset != NULL) {
+++ *offset = addr - (address)dlinfo.dli_fbase;
+++ }
+++ return true;
+++ }
+++
+++ buf[0] = '\0';
+++ if (offset) *offset = -1;
+++ return false;
+++}
+++
+++ // Loads .dll/.so and
+++ // in case of error it checks if .dll/.so was built for the
+++ // same architecture as Hotspot is running on
+++
+++
+++// Remember the stack's state. The Linux dynamic linker will change
+++// the stack to 'executable' at most once, so we must safepoint only once.
+++bool os::Linux::_stack_is_executable = false;
+++
+++// VM operation that loads a library. This is necessary if stack protection
+++// of the Java stacks can be lost during loading the library. If we
+++// do not stop the Java threads, they can stack overflow before the stacks
+++// are protected again.
+++class VM_LinuxDllLoad: public VM_Operation {
+++ private:
+++ const char *_filename;
+++ char *_ebuf;
+++ int _ebuflen;
+++ void *_lib;
+++ public:
+++ VM_LinuxDllLoad(const char *fn, char *ebuf, int ebuflen) :
+++ _filename(fn), _ebuf(ebuf), _ebuflen(ebuflen), _lib(NULL) {}
+++ VMOp_Type type() const { return VMOp_LinuxDllLoad; }
+++ void doit() {
+++ _lib = os::Linux::dll_load_in_vmthread(_filename, _ebuf, _ebuflen);
+++ os::Linux::_stack_is_executable = true;
+++ }
+++ void* loaded_library() { return _lib; }
+++};
+++
+++void * os::dll_load(const char *filename, char *ebuf, int ebuflen)
+++{
+++ void * result = NULL;
+++ bool load_attempted = false;
+++
+++ // Check whether the library to load might change execution rights
+++ // of the stack. If they are changed, the protection of the stack
+++ // guard pages will be lost. We need a safepoint to fix this.
+++ //
+++ // See Linux man page execstack(8) for more info.
+++ if (os::uses_stack_guard_pages() && !os::Linux::_stack_is_executable) {
+++ ElfFile ef(filename);
+++ if (!ef.specifies_noexecstack()) {
+++ if (!is_init_completed()) {
+++ os::Linux::_stack_is_executable = true;
+++ // This is OK - No Java threads have been created yet, and hence no
+++ // stack guard pages to fix.
+++ //
+++ // This should happen only when you are building JDK7 using a very
+++ // old version of JDK6 (e.g., with JPRT) and running test_gamma.
+++ //
+++ // Dynamic loader will make all stacks executable after
+++ // this function returns, and will not do that again.
+++ assert(Threads::first() == NULL, "no Java threads should exist yet.");
+++ } else {
+++ warning("You have loaded library %s which might have disabled stack guard. "
+++ "The VM will try to fix the stack guard now.\n"
+++ "It's highly recommended that you fix the library with "
+++ "'execstack -c <libfile>', or link it with '-z noexecstack'.",
+++ filename);
+++
+++ assert(Thread::current()->is_Java_thread(), "must be Java thread");
+++ JavaThread *jt = JavaThread::current();
+++ if (jt->thread_state() != _thread_in_native) {
+++ // This happens when a compiler thread tries to load a hsdis-<arch>.so file
+++ // that requires ExecStack. Cannot enter safe point. Let's give up.
+++ warning("Unable to fix stack guard. Giving up.");
+++ } else {
+++ if (!LoadExecStackDllInVMThread) {
+++ // This is for the case where the DLL has an static
+++ // constructor function that executes JNI code. We cannot
+++ // load such DLLs in the VMThread.
+++ result = os::Linux::dlopen_helper(filename, ebuf, ebuflen);
+++ }
+++
+++ ThreadInVMfromNative tiv(jt);
+++ debug_only(VMNativeEntryWrapper vew;)
+++
+++ VM_LinuxDllLoad op(filename, ebuf, ebuflen);
+++ VMThread::execute(&op);
+++ if (LoadExecStackDllInVMThread) {
+++ result = op.loaded_library();
+++ }
+++ load_attempted = true;
+++ }
+++ }
+++ }
+++ }
+++
+++ if (!load_attempted) {
+++ result = os::Linux::dlopen_helper(filename, ebuf, ebuflen);
+++ }
+++
+++ if (result != NULL) {
+++ // Successful loading
+++ return result;
+++ }
+++
+++ Elf32_Ehdr elf_head;
+++ int diag_msg_max_length=ebuflen-strlen(ebuf);
+++ char* diag_msg_buf=ebuf+strlen(ebuf);
+++
+++ if (diag_msg_max_length==0) {
+++ // No more space in ebuf for additional diagnostics message
+++ return NULL;
+++ }
+++
+++
+++ int file_descriptor= ::open(filename, O_RDONLY | O_NONBLOCK);
+++
+++ if (file_descriptor < 0) {
+++ // Can't open library, report dlerror() message
+++ return NULL;
+++ }
+++
+++ bool failed_to_read_elf_head=
+++ (sizeof(elf_head)!=
+++ (::read(file_descriptor, &elf_head,sizeof(elf_head)))) ;
+++
+++ ::close(file_descriptor);
+++ if (failed_to_read_elf_head) {
+++ // file i/o error - report dlerror() msg
+++ return NULL;
+++ }
+++
+++ typedef struct {
+++ Elf32_Half code; // Actual value as defined in elf.h
+++ Elf32_Half compat_class; // Compatibility of archs at VM's sense
+++ char elf_class; // 32 or 64 bit
+++ char endianess; // MSB or LSB
+++ char* name; // String representation
+++ } arch_t;
+++
+++ #ifndef EM_486
+++ #define EM_486 6 /* Intel 80486 */
+++ #endif
+++
+++ static const arch_t arch_array[]={
+++ {EM_386, EM_386, ELFCLASS32, ELFDATA2LSB, (char*)"IA 32"},
+++ {EM_486, EM_386, ELFCLASS32, ELFDATA2LSB, (char*)"IA 32"},
+++ {EM_IA_64, EM_IA_64, ELFCLASS64, ELFDATA2LSB, (char*)"IA 64"},
+++ {EM_X86_64, EM_X86_64, ELFCLASS64, ELFDATA2LSB, (char*)"AMD 64"},
+++ {EM_SPARC, EM_SPARC, ELFCLASS32, ELFDATA2MSB, (char*)"Sparc 32"},
+++ {EM_SPARC32PLUS, EM_SPARC, ELFCLASS32, ELFDATA2MSB, (char*)"Sparc 32"},
+++ {EM_SPARCV9, EM_SPARCV9, ELFCLASS64, ELFDATA2MSB, (char*)"Sparc v9 64"},
+++ {EM_PPC, EM_PPC, ELFCLASS32, ELFDATA2MSB, (char*)"Power PC 32"},
+++ {EM_PPC64, EM_PPC64, ELFCLASS64, ELFDATA2MSB, (char*)"Power PC 64"},
+++ {EM_ARM, EM_ARM, ELFCLASS32, ELFDATA2LSB, (char*)"ARM"},
+++ {EM_S390, EM_S390, ELFCLASSNONE, ELFDATA2MSB, (char*)"IBM System/390"},
+++ {EM_ALPHA, EM_ALPHA, ELFCLASS64, ELFDATA2LSB, (char*)"Alpha"},
+++ {EM_MIPS_RS3_LE, EM_MIPS_RS3_LE, ELFCLASS32, ELFDATA2LSB, (char*)"MIPSel"},
+++ {EM_MIPS, EM_MIPS, ELFCLASS32, ELFDATA2MSB, (char*)"MIPS"},
+++ {EM_PARISC, EM_PARISC, ELFCLASS32, ELFDATA2MSB, (char*)"PARISC"},
+++ {EM_68K, EM_68K, ELFCLASS32, ELFDATA2MSB, (char*)"M68k"},
+++ {EM_SH, EM_SH, ELFCLASS32, ELFDATA2LSB, (char*)"SH"}, /* Support little endian only*/
+++ {EM_AARCH64, EM_AARCH64, ELFCLASS64, ELFDATA2LSB, (char*)"AARCH64"} /* Support little endian only*/
+++ };
+++
+++ #if (defined IA32)
+++ static Elf32_Half running_arch_code=EM_386;
+++ #elif (defined AMD64)
+++ static Elf32_Half running_arch_code=EM_X86_64;
+++ #elif (defined IA64)
+++ static Elf32_Half running_arch_code=EM_IA_64;
+++ #elif (defined __sparc) && (defined _LP64)
+++ static Elf32_Half running_arch_code=EM_SPARCV9;
+++ #elif (defined __sparc) && (!defined _LP64)
+++ static Elf32_Half running_arch_code=EM_SPARC;
+++ #elif (defined __powerpc64__)
+++ static Elf32_Half running_arch_code=EM_PPC64;
+++ #elif (defined __powerpc__)
+++ static Elf32_Half running_arch_code=EM_PPC;
+++ #elif (defined ARM)
+++ static Elf32_Half running_arch_code=EM_ARM;
+++ #elif (defined S390)
+++ static Elf32_Half running_arch_code=EM_S390;
+++ #elif (defined ALPHA)
+++ static Elf32_Half running_arch_code=EM_ALPHA;
+++ #elif (defined MIPSEL)
+++ static Elf32_Half running_arch_code=EM_MIPS_RS3_LE;
+++ #elif (defined PARISC)
+++ static Elf32_Half running_arch_code=EM_PARISC;
+++ #elif (defined MIPS)
+++ static Elf32_Half running_arch_code=EM_MIPS;
+++ #elif (defined M68K)
+++ static Elf32_Half running_arch_code=EM_68K;
+++ #elif (defined SH)
+++ static Elf32_Half running_arch_code=EM_SH;
+++ #elif (defined AARCH64)
+++ static Elf32_Half running_arch_code=EM_AARCH64;
+++ #else
+++ #error Method os::dll_load requires that one of following is defined:\
+++ IA32, AMD64, IA64, __sparc, __powerpc__, ARM, S390, ALPHA, MIPS, MIPSEL, PARISC, M68K, SH
+++ #endif
+++
+++ // Identify compatability class for VM's architecture and library's architecture
+++ // Obtain string descriptions for architectures
+++
+++ arch_t lib_arch={elf_head.e_machine,0,elf_head.e_ident[EI_CLASS], elf_head.e_ident[EI_DATA], NULL};
+++ int running_arch_index=-1;
+++
+++ for (unsigned int i=0 ; i < ARRAY_SIZE(arch_array) ; i++ ) {
+++ if (running_arch_code == arch_array[i].code) {
+++ running_arch_index = i;
+++ }
+++ if (lib_arch.code == arch_array[i].code) {
+++ lib_arch.compat_class = arch_array[i].compat_class;
+++ lib_arch.name = arch_array[i].name;
+++ }
+++ }
+++
+++ assert(running_arch_index != -1,
+++ "Didn't find running architecture code (running_arch_code) in arch_array");
+++ if (running_arch_index == -1) {
+++ // Even though running architecture detection failed
+++ // we may still continue with reporting dlerror() message
+++ return NULL;
+++ }
+++
+++ if (lib_arch.endianess != arch_array[running_arch_index].endianess) {
+++ ::snprintf(diag_msg_buf, diag_msg_max_length-1," (Possible cause: endianness mismatch)");
+++ return NULL;
+++ }
+++
+++#ifndef S390
+++ if (lib_arch.elf_class != arch_array[running_arch_index].elf_class) {
+++ ::snprintf(diag_msg_buf, diag_msg_max_length-1," (Possible cause: architecture word width mismatch)");
+++ return NULL;
+++ }
+++#endif // !S390
+++
+++ if (lib_arch.compat_class != arch_array[running_arch_index].compat_class) {
+++ if ( lib_arch.name!=NULL ) {
+++ ::snprintf(diag_msg_buf, diag_msg_max_length-1,
+++ " (Possible cause: can't load %s-bit .so on a %s-bit platform)",
+++ lib_arch.name, arch_array[running_arch_index].name);
+++ } else {
+++ ::snprintf(diag_msg_buf, diag_msg_max_length-1,
+++ " (Possible cause: can't load this .so (machine code=0x%x) on a %s-bit platform)",
+++ lib_arch.code,
+++ arch_array[running_arch_index].name);
+++ }
+++ }
+++
+++ return NULL;
+++}
+++
+++void * os::Linux::dlopen_helper(const char *filename, char *ebuf, int ebuflen) {
+++ void * result = ::dlopen(filename, RTLD_LAZY);
+++ if (result == NULL) {
+++ ::strncpy(ebuf, ::dlerror(), ebuflen - 1);
+++ ebuf[ebuflen-1] = '\0';
+++ }
+++ return result;
+++}
+++
+++void * os::Linux::dll_load_in_vmthread(const char *filename, char *ebuf, int ebuflen) {
+++ void * result = NULL;
+++ if (LoadExecStackDllInVMThread) {
+++ result = dlopen_helper(filename, ebuf, ebuflen);
+++ }
+++
+++ // Since 7019808, libjvm.so is linked with -noexecstack. If the VM loads a
+++ // library that requires an executable stack, or which does not have this
+++ // stack attribute set, dlopen changes the stack attribute to executable. The
+++ // read protection of the guard pages gets lost.
+++ //
+++ // Need to check _stack_is_executable again as multiple VM_LinuxDllLoad
+++ // may have been queued at the same time.
+++
+++ if (!_stack_is_executable) {
+++ JavaThread *jt = Threads::first();
+++
+++ while (jt) {
+++ if (!jt->stack_guard_zone_unused() && // Stack not yet fully initialized
+++ jt->stack_yellow_zone_enabled()) { // No pending stack overflow exceptions
+++ if (!os::guard_memory((char *) jt->stack_red_zone_base() - jt->stack_red_zone_size(),
+++ jt->stack_yellow_zone_size() + jt->stack_red_zone_size())) {
+++ warning("Attempt to reguard stack yellow zone failed.");
+++ }
+++ }
+++ jt = jt->next();
+++ }
+++ }
+++
+++ return result;
+++}
+++
+++/*
+++ * glibc-2.0 libdl is not MT safe. If you are building with any glibc,
+++ * chances are you might want to run the generated bits against glibc-2.0
+++ * libdl.so, so always use locking for any version of glibc.
+++ */
+++void* os::dll_lookup(void* handle, const char* name) {
+++ pthread_mutex_lock(&dl_mutex);
+++ void* res = dlsym(handle, name);
+++ pthread_mutex_unlock(&dl_mutex);
+++ return res;
+++}
+++
+++
+++static bool _print_ascii_file(const char* filename, outputStream* st) {
+++ int fd = ::open(filename, O_RDONLY);
+++ if (fd == -1) {
+++ return false;
+++ }
+++
+++ char buf[32];
+++ int bytes;
+++ while ((bytes = ::read(fd, buf, sizeof(buf))) > 0) {
+++ st->print_raw(buf, bytes);
+++ }
+++
+++ ::close(fd);
+++
+++ return true;
+++}
+++
+++bool _print_lsb_file(const char* filename, outputStream* st) {
+++ int fd = open(filename, O_RDONLY);
+++ if (fd == -1) {
+++ return false;
+++ }
+++
+++ char buf[512], *d_i, *d_r, *d_c;
+++ int bytes;
+++
+++ if ((bytes = read(fd, buf, sizeof(buf)-1)) == sizeof(buf)-1) {
+++ close(fd);
+++ return false;
+++ }
+++ close(fd);
+++
+++ buf[bytes] = '\n';
+++ buf[bytes+1] = '\0';
+++ d_i = strstr(buf, "DISTRIB_ID=");
+++ d_r = strstr(buf, "DISTRIB_RELEASE=");
+++ d_c = strstr(buf, "DISTRIB_CODENAME=");
+++ if (!d_i || !d_r || !d_c) {
+++ return false;
+++ }
+++ d_i = strchr(d_i, '=') + 1; *strchrnul(d_i, '\n') = '\0';
+++ d_r = strchr(d_r, '=') + 1; *strchrnul(d_r, '\n') = '\0';
+++ d_c = strchr(d_c, '=') + 1; *strchrnul(d_c, '\n') = '\0';
+++ st->print("%s %s (%s)", d_i, d_r, d_c);
+++
+++ return true;
+++}
+++
+++void os::print_dll_info(outputStream *st) {
+++ st->print_cr("Dynamic libraries:");
+++
+++ char fname[32];
+++ pid_t pid = os::Linux::gettid();
+++
+++ jio_snprintf(fname, sizeof(fname), "/proc/%d/maps", pid);
+++
+++ if (!_print_ascii_file(fname, st)) {
+++ st->print("Can not get library information for pid = %d\n", pid);
+++ }
+++}
+++
+++void os::print_os_info_brief(outputStream* st) {
+++ os::Linux::print_distro_info(st);
+++
+++ os::Posix::print_uname_info(st);
+++
+++ os::Linux::print_libversion_info(st);
+++
+++}
+++
+++void os::print_os_info(outputStream* st) {
+++ st->print("OS:");
+++
+++ os::Linux::print_distro_info(st);
+++
+++ os::Posix::print_uname_info(st);
+++
+++ // Print warning if unsafe chroot environment detected
+++ if (unsafe_chroot_detected) {
+++ st->print("WARNING!! ");
+++ st->print_cr(unstable_chroot_error);
+++ }
+++
+++ os::Linux::print_libversion_info(st);
+++
+++ os::Posix::print_rlimit_info(st);
+++
+++ os::Posix::print_load_average(st);
+++
+++ os::Linux::print_full_memory_info(st);
+++}
+++
+++// Try to identify popular distros.
+++// Most Linux distributions have /etc/XXX-release file, which contains
+++// the OS version string. Some have more than one /etc/XXX-release file
+++// (e.g. Mandrake has both /etc/mandrake-release and /etc/redhat-release.),
+++// so the order is important.
+++void os::Linux::print_distro_info(outputStream* st) {
+++ if (!_print_ascii_file("/etc/mandrake-release", st) &&
+++ !_print_ascii_file("/etc/sun-release", st) &&
+++ !_print_ascii_file("/etc/redhat-release", st) &&
+++ !_print_ascii_file("/etc/SuSE-release", st) &&
+++ !_print_ascii_file("/etc/turbolinux-release", st) &&
+++ !_print_ascii_file("/etc/gentoo-release", st) &&
+++ !_print_lsb_file("/etc/lsb-release", st) &&
+++ !_print_ascii_file("/etc/debian_version", st) &&
+++ !_print_ascii_file("/etc/ltib-release", st) &&
+++ !_print_ascii_file("/etc/angstrom-version", st)) {
+++ st->print("Linux");
+++ }
+++ st->cr();
+++}
+++
+++void os::Linux::print_libversion_info(outputStream* st) {
+++ // libc, pthread
+++ st->print("libc:");
+++ st->print(os::Linux::glibc_version()); st->print(" ");
+++ st->print(os::Linux::libpthread_version()); st->print(" ");
+++ if (os::Linux::is_LinuxThreads()) {
+++ st->print("(%s stack)", os::Linux::is_floating_stack() ? "floating" : "fixed");
+++ }
+++ st->cr();
+++}
+++
+++void os::Linux::print_full_memory_info(outputStream* st) {
+++ st->print("\n/proc/meminfo:\n");
+++ _print_ascii_file("/proc/meminfo", st);
+++ st->cr();
+++}
+++
+++void os::print_memory_info(outputStream* st) {
+++
+++ st->print("Memory:");
+++ st->print(" %dk page", os::vm_page_size()>>10);
+++
+++ // values in struct sysinfo are "unsigned long"
+++ struct sysinfo si;
+++ sysinfo(&si);
+++
+++ st->print(", physical " UINT64_FORMAT "k",
+++ os::physical_memory() >> 10);
+++ st->print("(" UINT64_FORMAT "k free)",
+++ os::available_memory() >> 10);
+++ st->print(", swap " UINT64_FORMAT "k",
+++ ((jlong)si.totalswap * si.mem_unit) >> 10);
+++ st->print("(" UINT64_FORMAT "k free)",
+++ ((jlong)si.freeswap * si.mem_unit) >> 10);
+++ st->cr();
+++}
+++
+++void os::pd_print_cpu_info(outputStream* st) {
+++ st->print("\n/proc/cpuinfo:\n");
+++ if (!_print_ascii_file("/proc/cpuinfo", st)) {
+++ st->print(" <Not Available>");
+++ }
+++ st->cr();
+++}
+++
+++// Taken from /usr/include/bits/siginfo.h Supposed to be architecture specific
+++// but they're the same for all the linux arch that we support
+++// and they're the same for solaris but there's no common place to put this.
+++const char *ill_names[] = { "ILL0", "ILL_ILLOPC", "ILL_ILLOPN", "ILL_ILLADR",
+++ "ILL_ILLTRP", "ILL_PRVOPC", "ILL_PRVREG",
+++ "ILL_COPROC", "ILL_BADSTK" };
+++
+++const char *fpe_names[] = { "FPE0", "FPE_INTDIV", "FPE_INTOVF", "FPE_FLTDIV",
+++ "FPE_FLTOVF", "FPE_FLTUND", "FPE_FLTRES",
+++ "FPE_FLTINV", "FPE_FLTSUB", "FPE_FLTDEN" };
+++
+++const char *segv_names[] = { "SEGV0", "SEGV_MAPERR", "SEGV_ACCERR" };
+++
+++const char *bus_names[] = { "BUS0", "BUS_ADRALN", "BUS_ADRERR", "BUS_OBJERR" };
+++
+++void os::print_siginfo(outputStream* st, void* siginfo) {
+++ st->print("siginfo:");
+++
+++ const int buflen = 100;
+++ char buf[buflen];
+++ siginfo_t *si = (siginfo_t*)siginfo;
+++ st->print("si_signo=%s: ", os::exception_name(si->si_signo, buf, buflen));
+++ if (si->si_errno != 0 && strerror_r(si->si_errno, buf, buflen) == 0) {
+++ st->print("si_errno=%s", buf);
+++ } else {
+++ st->print("si_errno=%d", si->si_errno);
+++ }
+++ const int c = si->si_code;
+++ assert(c > 0, "unexpected si_code");
+++ switch (si->si_signo) {
+++ case SIGILL:
+++ st->print(", si_code=%d (%s)", c, c > 8 ? "" : ill_names[c]);
+++ st->print(", si_addr=" PTR_FORMAT, si->si_addr);
+++ break;
+++ case SIGFPE:
+++ st->print(", si_code=%d (%s)", c, c > 9 ? "" : fpe_names[c]);
+++ st->print(", si_addr=" PTR_FORMAT, si->si_addr);
+++ break;
+++ case SIGSEGV:
+++ st->print(", si_code=%d (%s)", c, c > 2 ? "" : segv_names[c]);
+++ st->print(", si_addr=" PTR_FORMAT, si->si_addr);
+++ break;
+++ case SIGBUS:
+++ st->print(", si_code=%d (%s)", c, c > 3 ? "" : bus_names[c]);
+++ st->print(", si_addr=" PTR_FORMAT, si->si_addr);
+++ break;
+++ default:
+++ st->print(", si_code=%d", si->si_code);
+++ // no si_addr
+++ }
+++
+++ if ((si->si_signo == SIGBUS || si->si_signo == SIGSEGV) &&
+++ UseSharedSpaces) {
+++ FileMapInfo* mapinfo = FileMapInfo::current_info();
+++ if (mapinfo->is_in_shared_space(si->si_addr)) {
+++ st->print("\n\nError accessing class data sharing archive." \
+++ " Mapped file inaccessible during execution, " \
+++ " possible disk/network problem.");
+++ }
+++ }
+++ st->cr();
+++}
+++
+++
+++static void print_signal_handler(outputStream* st, int sig,
+++ char* buf, size_t buflen);
+++
+++void os::print_signal_handlers(outputStream* st, char* buf, size_t buflen) {
+++ st->print_cr("Signal Handlers:");
+++ print_signal_handler(st, SIGSEGV, buf, buflen);
+++ print_signal_handler(st, SIGBUS , buf, buflen);
+++ print_signal_handler(st, SIGFPE , buf, buflen);
+++ print_signal_handler(st, SIGPIPE, buf, buflen);
+++ print_signal_handler(st, SIGXFSZ, buf, buflen);
+++ print_signal_handler(st, SIGILL , buf, buflen);
+++ print_signal_handler(st, INTERRUPT_SIGNAL, buf, buflen);
+++ print_signal_handler(st, SR_signum, buf, buflen);
+++ print_signal_handler(st, SHUTDOWN1_SIGNAL, buf, buflen);
+++ print_signal_handler(st, SHUTDOWN2_SIGNAL , buf, buflen);
+++ print_signal_handler(st, SHUTDOWN3_SIGNAL , buf, buflen);
+++ print_signal_handler(st, BREAK_SIGNAL, buf, buflen);
+++}
+++
+++static char saved_jvm_path[MAXPATHLEN] = {0};
+++
+++// Find the full path to the current module, libjvm.so or libjvm_g.so
+++void os::jvm_path(char *buf, jint buflen) {
+++ // Error checking.
+++ if (buflen < MAXPATHLEN) {
+++ assert(false, "must use a large-enough buffer");
+++ buf[0] = '\0';
+++ return;
+++ }
+++ // Lazy resolve the path to current module.
+++ if (saved_jvm_path[0] != 0) {
+++ strcpy(buf, saved_jvm_path);
+++ return;
+++ }
+++
+++ char dli_fname[MAXPATHLEN];
+++ bool ret = dll_address_to_library_name(
+++ CAST_FROM_FN_PTR(address, os::jvm_path),
+++ dli_fname, sizeof(dli_fname), NULL);
+++ assert(ret, "cannot locate libjvm");
+++ char *rp = NULL;
+++ if (ret && dli_fname[0] != '\0') {
+++ rp = realpath(dli_fname, buf);
+++ }
+++ if (rp == NULL)
+++ return;
+++
+++ if (Arguments::created_by_gamma_launcher()) {
+++ // Support for the gamma launcher. Typical value for buf is
+++ // "<JAVA_HOME>/jre/lib/<arch>/<vmtype>/libjvm.so". If "/jre/lib/" appears at
+++ // the right place in the string, then assume we are installed in a JDK and
+++ // we're done. Otherwise, check for a JAVA_HOME environment variable and fix
+++ // up the path so it looks like libjvm.so is installed there (append a
+++ // fake suffix hotspot/libjvm.so).
+++ const char *p = buf + strlen(buf) - 1;
+++ for (int count = 0; p > buf && count < 5; ++count) {
+++ for (--p; p > buf && *p != '/'; --p)
+++ /* empty */ ;
+++ }
+++
+++ if (strncmp(p, "/jre/lib/", 9) != 0) {
+++ // Look for JAVA_HOME in the environment.
+++ char* java_home_var = ::getenv("JAVA_HOME");
+++ if (java_home_var != NULL && java_home_var[0] != 0) {
+++ char* jrelib_p;
+++ int len;
+++
+++ // Check the current module name "libjvm.so" or "libjvm_g.so".
+++ p = strrchr(buf, '/');
+++ assert(strstr(p, "/libjvm") == p, "invalid library name");
+++ p = strstr(p, "_g") ? "_g" : "";
+++
+++ rp = realpath(java_home_var, buf);
+++ if (rp == NULL)
+++ return;
+++
+++ // determine if this is a legacy image or modules image
+++ // modules image doesn't have "jre" subdirectory
+++ len = strlen(buf);
+++ jrelib_p = buf + len;
+++ snprintf(jrelib_p, buflen-len, "/jre/lib/%s", cpu_arch);
+++ if (0 != access(buf, F_OK)) {
+++ snprintf(jrelib_p, buflen-len, "/lib/%s", cpu_arch);
+++ }
+++
+++ if (0 == access(buf, F_OK)) {
+++ // Use current module name "libjvm[_g].so" instead of
+++ // "libjvm"debug_only("_g")".so" since for fastdebug version
+++ // we should have "libjvm.so" but debug_only("_g") adds "_g"!
+++ len = strlen(buf);
+++ snprintf(buf + len, buflen-len, "/hotspot/libjvm%s.so", p);
+++ } else {
+++ // Go back to path of .so
+++ rp = realpath(dli_fname, buf);
+++ if (rp == NULL)
+++ return;
+++ }
+++ }
+++ }
+++ }
+++
+++ strcpy(saved_jvm_path, buf);
+++}
+++
+++void os::print_jni_name_prefix_on(outputStream* st, int args_size) {
+++ // no prefix required, not even "_"
+++}
+++
+++void os::print_jni_name_suffix_on(outputStream* st, int args_size) {
+++ // no suffix required
+++}
+++
+++////////////////////////////////////////////////////////////////////////////////
+++// sun.misc.Signal support
+++
+++static volatile jint sigint_count = 0;
+++
+++static void
+++UserHandler(int sig, void *siginfo, void *context) {
+++ // 4511530 - sem_post is serialized and handled by the manager thread. When
+++ // the program is interrupted by Ctrl-C, SIGINT is sent to every thread. We
+++ // don't want to flood the manager thread with sem_post requests.
+++ if (sig == SIGINT && Atomic::add(1, &sigint_count) > 1)
+++ return;
+++
+++ // Ctrl-C is pressed during error reporting, likely because the error
+++ // handler fails to abort. Let VM die immediately.
+++ if (sig == SIGINT && is_error_reported()) {
+++ os::die();
+++ }
+++
+++ os::signal_notify(sig);
+++}
+++
+++void* os::user_handler() {
+++ return CAST_FROM_FN_PTR(void*, UserHandler);
+++}
+++
+++class Semaphore : public StackObj {
+++ public:
+++ Semaphore();
+++ ~Semaphore();
+++ void signal();
+++ void wait();
+++ bool trywait();
+++ bool timedwait(unsigned int sec, int nsec);
+++ private:
+++ sem_t _semaphore;
+++};
+++
+++
+++Semaphore::Semaphore() {
+++ sem_init(&_semaphore, 0, 0);
+++}
+++
+++Semaphore::~Semaphore() {
+++ sem_destroy(&_semaphore);
+++}
+++
+++void Semaphore::signal() {
+++ sem_post(&_semaphore);
+++}
+++
+++void Semaphore::wait() {
+++ sem_wait(&_semaphore);
+++}
+++
+++bool Semaphore::trywait() {
+++ return sem_trywait(&_semaphore) == 0;
+++}
+++
+++bool Semaphore::timedwait(unsigned int sec, int nsec) {
+++ struct timespec ts;
+++ unpackTime(&ts, false, (sec * NANOSECS_PER_SEC) + nsec);
+++
+++ while (1) {
+++ int result = sem_timedwait(&_semaphore, &ts);
+++ if (result == 0) {
+++ return true;
+++ } else if (errno == EINTR) {
+++ continue;
+++ } else if (errno == ETIMEDOUT) {
+++ return false;
+++ } else {
+++ return false;
+++ }
+++ }
+++}
+++
+++extern "C" {
+++ typedef void (*sa_handler_t)(int);
+++ typedef void (*sa_sigaction_t)(int, siginfo_t *, void *);
+++}
+++
+++void* os::signal(int signal_number, void* handler) {
+++ struct sigaction sigAct, oldSigAct;
+++
+++ sigfillset(&(sigAct.sa_mask));
+++ sigAct.sa_flags = SA_RESTART|SA_SIGINFO;
+++ sigAct.sa_handler = CAST_TO_FN_PTR(sa_handler_t, handler);
+++
+++ if (sigaction(signal_number, &sigAct, &oldSigAct)) {
+++ // -1 means registration failed
+++ return (void *)-1;
+++ }
+++
+++ return CAST_FROM_FN_PTR(void*, oldSigAct.sa_handler);
+++}
+++
+++void os::signal_raise(int signal_number) {
+++ ::raise(signal_number);
+++}
+++
+++/*
+++ * The following code is moved from os.cpp for making this
+++ * code platform specific, which it is by its very nature.
+++ */
+++
+++// Will be modified when max signal is changed to be dynamic
+++int os::sigexitnum_pd() {
+++ return NSIG;
+++}
+++
+++// a counter for each possible signal value
+++static volatile jint pending_signals[NSIG+1] = { 0 };
+++
+++// Linux(POSIX) specific hand shaking semaphore.
+++static sem_t sig_sem;
+++static Semaphore sr_semaphore;
+++
+++void os::signal_init_pd() {
+++ // Initialize signal structures
+++ ::memset((void*)pending_signals, 0, sizeof(pending_signals));
+++
+++ // Initialize signal semaphore
+++ ::sem_init(&sig_sem, 0, 0);
+++}
+++
+++void os::signal_notify(int sig) {
+++ Atomic::inc(&pending_signals[sig]);
+++ ::sem_post(&sig_sem);
+++}
+++
+++static int check_pending_signals(bool wait) {
+++ Atomic::store(0, &sigint_count);
+++ for (;;) {
+++ for (int i = 0; i < NSIG + 1; i++) {
+++ jint n = pending_signals[i];
+++ if (n > 0 && n == Atomic::cmpxchg(n - 1, &pending_signals[i], n)) {
+++ return i;
+++ }
+++ }
+++ if (!wait) {
+++ return -1;
+++ }
+++ JavaThread *thread = JavaThread::current();
+++ ThreadBlockInVM tbivm(thread);
+++
+++ bool threadIsSuspended;
+++ do {
+++ thread->set_suspend_equivalent();
+++ // cleared by handle_special_suspend_equivalent_condition() or java_suspend_self()
+++ ::sem_wait(&sig_sem);
+++
+++ // were we externally suspended while we were waiting?
+++ threadIsSuspended = thread->handle_special_suspend_equivalent_condition();
+++ if (threadIsSuspended) {
+++ //
+++ // The semaphore has been incremented, but while we were waiting
+++ // another thread suspended us. We don't want to continue running
+++ // while suspended because that would surprise the thread that
+++ // suspended us.
+++ //
+++ ::sem_post(&sig_sem);
+++
+++ thread->java_suspend_self();
+++ }
+++ } while (threadIsSuspended);
+++ }
+++}
+++
+++int os::signal_lookup() {
+++ return check_pending_signals(false);
+++}
+++
+++int os::signal_wait() {
+++ return check_pending_signals(true);
+++}
+++
+++////////////////////////////////////////////////////////////////////////////////
+++// Virtual Memory
+++
+++int os::vm_page_size() {
+++ // Seems redundant as all get out
+++ assert(os::Linux::page_size() != -1, "must call os::init");
+++ return os::Linux::page_size();
+++}
+++
+++// Solaris allocates memory by pages.
+++int os::vm_allocation_granularity() {
+++ assert(os::Linux::page_size() != -1, "must call os::init");
+++ return os::Linux::page_size();
+++}
+++
+++// Rationale behind this function:
+++// current (Mon Apr 25 20:12:18 MSD 2005) oprofile drops samples without executable
+++// mapping for address (see lookup_dcookie() in the kernel module), thus we cannot get
+++// samples for JITted code. Here we create private executable mapping over the code cache
+++// and then we can use standard (well, almost, as mapping can change) way to provide
+++// info for the reporting script by storing timestamp and location of symbol
+++void linux_wrap_code(char* base, size_t size) {
+++ static volatile jint cnt = 0;
+++
+++ if (!UseOprofile) {
+++ return;
+++ }
+++
+++ char buf[PATH_MAX+1];
+++ int num = Atomic::add(1, &cnt);
+++
+++ snprintf(buf, sizeof(buf), "%s/hs-vm-%d-%d",
+++ os::get_temp_directory(), os::current_process_id(), num);
+++ unlink(buf);
+++
+++ int fd = ::open(buf, O_CREAT | O_RDWR, S_IRWXU);
+++
+++ if (fd != -1) {
+++ off_t rv = ::lseek(fd, size-2, SEEK_SET);
+++ if (rv != (off_t)-1) {
+++ if (::write(fd, "", 1) == 1) {
+++ mmap(base, size,
+++ PROT_READ|PROT_WRITE|PROT_EXEC,
+++ MAP_PRIVATE|MAP_FIXED|MAP_NORESERVE, fd, 0);
+++ }
+++ }
+++ ::close(fd);
+++ unlink(buf);
+++ }
+++}
+++
+++static bool recoverable_mmap_error(int err) {
+++ // See if the error is one we can let the caller handle. This
+++ // list of errno values comes from JBS-6843484. I can't find a
+++ // Linux man page that documents this specific set of errno
+++ // values so while this list currently matches Solaris, it may
+++ // change as we gain experience with this failure mode.
+++ switch (err) {
+++ case EBADF:
+++ case EINVAL:
+++ case ENOTSUP:
+++ // let the caller deal with these errors
+++ return true;
+++
+++ default:
+++ // Any remaining errors on this OS can cause our reserved mapping
+++ // to be lost. That can cause confusion where different data
+++ // structures think they have the same memory mapped. The worst
+++ // scenario is if both the VM and a library think they have the
+++ // same memory mapped.
+++ return false;
+++ }
+++}
+++
+++static void warn_fail_commit_memory(char* addr, size_t size, bool exec,
+++ int err) {
+++ warning("INFO: os::commit_memory(" PTR_FORMAT ", " SIZE_FORMAT
+++ ", %d) failed; error='%s' (errno=%d)", addr, size, exec,
+++ strerror(err), err);
+++}
+++
+++static void warn_fail_commit_memory(char* addr, size_t size,
+++ size_t alignment_hint, bool exec,
+++ int err) {
+++ warning("INFO: os::commit_memory(" PTR_FORMAT ", " SIZE_FORMAT
+++ ", " SIZE_FORMAT ", %d) failed; error='%s' (errno=%d)", addr, size,
+++ alignment_hint, exec, strerror(err), err);
+++}
+++
+++static void warn_fail_commit_memory(char* addr, size_t size,
+++ size_t alignment_hint, bool exec,
+++ int err, const char* msg) {
+++ warning("INFO: os::commit_memory(" PTR_FORMAT ", " SIZE_FORMAT
+++ ", " SIZE_FORMAT ", %d) failed; error='%s' (errno=%d); %s", addr, size,
+++ alignment_hint, exec, strerror(err), err, msg);
+++}
+++
+++// NOTE: Linux kernel does not really reserve the pages for us.
+++// All it does is to check if there are enough free pages
+++// left at the time of mmap(). This could be a potential
+++// problem.
+++int os::Linux::commit_memory_impl(char* addr, size_t size, bool exec) {
+++ int prot = exec ? PROT_READ|PROT_WRITE|PROT_EXEC : PROT_READ|PROT_WRITE;
+++ uintptr_t res = (uintptr_t) ::mmap(addr, size, prot,
+++ MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0);
+++ if (res != (uintptr_t) MAP_FAILED) {
+++ if (UseNUMAInterleaving) {
+++ numa_make_global(addr, size);
+++ }
+++ return 0;
+++ }
+++
+++ int err = errno; // save errno from mmap() call above
+++
+++ if (!recoverable_mmap_error(err)) {
+++ warn_fail_commit_memory(addr, size, exec, err);
+++ vm_exit_out_of_memory(size, "committing reserved memory.");
+++ }
+++
+++ return err;
+++}
+++
+++bool os::pd_commit_memory(char* addr, size_t size, bool exec) {
+++ return os::Linux::commit_memory_impl(addr, size, exec) == 0;
+++}
+++
+++void os::pd_commit_memory_or_exit(char* addr, size_t size, bool exec,
+++ const char* mesg) {
+++ assert(mesg != NULL, "mesg must be specified");
+++ int err = os::Linux::commit_memory_impl(addr, size, exec);
+++ if (err != 0) {
+++ // the caller wants all commit errors to exit with the specified mesg:
+++ warn_fail_commit_memory(addr, size, exec, err);
+++ vm_exit_out_of_memory(size, mesg);
+++ }
+++}
+++
+++// Define MAP_HUGETLB here so we can build HotSpot on old systems.
+++#ifndef MAP_HUGETLB
+++#define MAP_HUGETLB 0x40000
+++#endif
+++
+++// Define MADV_HUGEPAGE here so we can build HotSpot on old systems.
+++#ifndef MADV_HUGEPAGE
+++#define MADV_HUGEPAGE 14
+++#endif
+++
+++volatile jint os::Linux::num_largepage_commit_fails = 0;
+++
+++int os::Linux::commit_memory_impl(char* addr, size_t size,
+++ size_t alignment_hint, bool exec) {
+++ int err;
+++ if (UseHugeTLBFS && alignment_hint > (size_t)vm_page_size()) {
+++ int prot = exec ? PROT_READ|PROT_WRITE|PROT_EXEC : PROT_READ|PROT_WRITE;
+++ uintptr_t res =
+++ (uintptr_t) ::mmap(addr, size, prot,
+++ MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS|MAP_HUGETLB,
+++ -1, 0);
+++ if (res != (uintptr_t) MAP_FAILED) {
+++ if (UseNUMAInterleaving) {
+++ numa_make_global(addr, size);
+++ }
+++ return 0;
+++ }
+++
+++ err = errno; // save errno from mmap() call above
+++
+++ if (!recoverable_mmap_error(err)) {
+++ // However, it is not clear that this loss of our reserved mapping
+++ // happens with large pages on Linux or that we cannot recover
+++ // from the loss. For now, we just issue a warning and we don't
+++ // call vm_exit_out_of_memory(). This issue is being tracked by
+++ // JBS-8007074.
+++ Atomic::inc(&os::Linux::num_largepage_commit_fails);
+++ warn_fail_commit_memory(addr, size, alignment_hint, exec, err,
+++ "Cannot allocate large pages, falling back to regular pages");
+++// vm_exit_out_of_memory(size, "committing reserved memory.");
+++ }
+++ // Fall through and try to use small pages
+++ }
+++
+++ err = os::Linux::commit_memory_impl(addr, size, exec);
+++ if (err == 0) {
+++ realign_memory(addr, size, alignment_hint);
+++ }
+++ return err;
+++}
+++
+++bool os::pd_commit_memory(char* addr, size_t size, size_t alignment_hint,
+++ bool exec) {
+++ return os::Linux::commit_memory_impl(addr, size, alignment_hint, exec) == 0;
+++}
+++
+++void os::pd_commit_memory_or_exit(char* addr, size_t size,
+++ size_t alignment_hint, bool exec,
+++ const char* mesg) {
+++ assert(mesg != NULL, "mesg must be specified");
+++ int err = os::Linux::commit_memory_impl(addr, size, alignment_hint, exec);
+++ if (err != 0) {
+++ // the caller wants all commit errors to exit with the specified mesg:
+++ warn_fail_commit_memory(addr, size, alignment_hint, exec, err);
+++ vm_exit_out_of_memory(size, mesg);
+++ }
+++}
+++
+++void os::pd_realign_memory(char *addr, size_t bytes, size_t alignment_hint) {
+++ if (UseHugeTLBFS && alignment_hint > (size_t)vm_page_size()) {
+++ // We don't check the return value: madvise(MADV_HUGEPAGE) may not
+++ // be supported or the memory may already be backed by huge pages.
+++ ::madvise(addr, bytes, MADV_HUGEPAGE);
+++ }
+++}
+++
+++void os::pd_free_memory(char *addr, size_t bytes, size_t alignment_hint) {
+++ // This method works by doing an mmap over an existing mmaping and effectively discarding
+++ // the existing pages. However it won't work for SHM-based large pages that cannot be
+++ // uncommitted at all. We don't do anything in this case to avoid creating a segment with
+++ // small pages on top of the SHM segment. This method always works for small pages, so we
+++ // allow that in any case.
+++ if (alignment_hint <= (size_t)os::vm_page_size() || !UseSHM) {
+++ commit_memory(addr, bytes, alignment_hint, !ExecMem);
+++ }
+++}
+++
+++void os::numa_make_global(char *addr, size_t bytes) {
+++ Linux::numa_interleave_memory(addr, bytes);
+++}
+++
+++void os::numa_make_local(char *addr, size_t bytes, int lgrp_hint) {
+++ Linux::numa_tonode_memory(addr, bytes, lgrp_hint);
+++}
+++
+++bool os::numa_topology_changed() { return false; }
+++
+++size_t os::numa_get_groups_num() {
+++ int max_node = Linux::numa_max_node();
+++ return max_node > 0 ? max_node + 1 : 1;
+++}
+++
+++int os::numa_get_group_id() {
+++ int cpu_id = Linux::sched_getcpu();
+++ if (cpu_id != -1) {
+++ int lgrp_id = Linux::get_node_by_cpu(cpu_id);
+++ if (lgrp_id != -1) {
+++ return lgrp_id;
+++ }
+++ }
+++ return 0;
+++}
+++
+++size_t os::numa_get_leaf_groups(int *ids, size_t size) {
+++ for (size_t i = 0; i < size; i++) {
+++ ids[i] = i;
+++ }
+++ return size;
+++}
+++
+++bool os::get_page_info(char *start, page_info* info) {
+++ return false;
+++}
+++
+++char *os::scan_pages(char *start, char* end, page_info* page_expected, page_info* page_found) {
+++ return end;
+++}
+++
+++
+++int os::Linux::sched_getcpu_syscall(void) {
+++ unsigned int cpu;
+++ int retval = -1;
+++
+++#if defined(IA32)
+++# ifndef SYS_getcpu
+++# define SYS_getcpu 318
+++# endif
+++ retval = syscall(SYS_getcpu, &cpu, NULL, NULL);
+++#elif defined(AMD64)
+++// Unfortunately we have to bring all these macros here from vsyscall.h
+++// to be able to compile on old linuxes.
+++# define __NR_vgetcpu 2
+++# define VSYSCALL_START (-10UL << 20)
+++# define VSYSCALL_SIZE 1024
+++# define VSYSCALL_ADDR(vsyscall_nr) (VSYSCALL_START+VSYSCALL_SIZE*(vsyscall_nr))
+++ typedef long (*vgetcpu_t)(unsigned int *cpu, unsigned int *node, unsigned long *tcache);
+++ vgetcpu_t vgetcpu = (vgetcpu_t)VSYSCALL_ADDR(__NR_vgetcpu);
+++ retval = vgetcpu(&cpu, NULL, NULL);
+++#endif
+++
+++ return (retval == -1) ? retval : cpu;
+++}
+++
+++// Something to do with the numa-aware allocator needs these symbols
+++extern "C" JNIEXPORT void numa_warn(int number, char *where, ...) { }
+++extern "C" JNIEXPORT void numa_error(char *where) { }
+++extern "C" JNIEXPORT int fork1() { return fork(); }
+++
+++
+++// If we are running with libnuma version > 2, then we should
+++// be trying to use symbols with versions 1.1
+++// If we are running with earlier version, which did not have symbol versions,
+++// we should use the base version.
+++void* os::Linux::libnuma_dlsym(void* handle, const char *name) {
+++ void *f = dlvsym(handle, name, "libnuma_1.1");
+++ if (f == NULL) {
+++ f = dlsym(handle, name);
+++ }
+++ return f;
+++}
+++
+++bool os::Linux::libnuma_init() {
+++ // sched_getcpu() should be in libc.
+++ set_sched_getcpu(CAST_TO_FN_PTR(sched_getcpu_func_t,
+++ dlsym(RTLD_DEFAULT, "sched_getcpu")));
+++
+++ // If it's not, try a direct syscall.
+++ if (sched_getcpu() == -1)
+++ set_sched_getcpu(CAST_TO_FN_PTR(sched_getcpu_func_t, (void*)&sched_getcpu_syscall));
+++
+++ if (sched_getcpu() != -1) { // Does it work?
+++ void *handle = dlopen("libnuma.so.1", RTLD_LAZY);
+++ if (handle != NULL) {
+++ set_numa_node_to_cpus(CAST_TO_FN_PTR(numa_node_to_cpus_func_t,
+++ libnuma_dlsym(handle, "numa_node_to_cpus")));
+++ set_numa_max_node(CAST_TO_FN_PTR(numa_max_node_func_t,
+++ libnuma_dlsym(handle, "numa_max_node")));
+++ set_numa_available(CAST_TO_FN_PTR(numa_available_func_t,
+++ libnuma_dlsym(handle, "numa_available")));
+++ set_numa_tonode_memory(CAST_TO_FN_PTR(numa_tonode_memory_func_t,
+++ libnuma_dlsym(handle, "numa_tonode_memory")));
+++ set_numa_interleave_memory(CAST_TO_FN_PTR(numa_interleave_memory_func_t,
+++ libnuma_dlsym(handle, "numa_interleave_memory")));
+++
+++
+++ if (numa_available() != -1) {
+++ set_numa_all_nodes((unsigned long*)libnuma_dlsym(handle, "numa_all_nodes"));
+++ // Create a cpu -> node mapping
+++ _cpu_to_node = new (ResourceObj::C_HEAP, mtInternal) GrowableArray<int>(0, true);
+++ rebuild_cpu_to_node_map();
+++ return true;
+++ }
+++ }
+++ }
+++ return false;
+++}
+++
+++// rebuild_cpu_to_node_map() constructs a table mapping cpud id to node id.
+++// The table is later used in get_node_by_cpu().
+++void os::Linux::rebuild_cpu_to_node_map() {
+++ const size_t NCPUS = 32768; // Since the buffer size computation is very obscure
+++ // in libnuma (possible values are starting from 16,
+++ // and continuing up with every other power of 2, but less
+++ // than the maximum number of CPUs supported by kernel), and
+++ // is a subject to change (in libnuma version 2 the requirements
+++ // are more reasonable) we'll just hardcode the number they use
+++ // in the library.
+++ const size_t BitsPerCLong = sizeof(long) * CHAR_BIT;
+++
+++ size_t cpu_num = os::active_processor_count();
+++ size_t cpu_map_size = NCPUS / BitsPerCLong;
+++ size_t cpu_map_valid_size =
+++ MIN2((cpu_num + BitsPerCLong - 1) / BitsPerCLong, cpu_map_size);
+++
+++ cpu_to_node()->clear();
+++ cpu_to_node()->at_grow(cpu_num - 1);
+++ size_t node_num = numa_get_groups_num();
+++
+++ unsigned long *cpu_map = NEW_C_HEAP_ARRAY(unsigned long, cpu_map_size, mtInternal);
+++ for (size_t i = 0; i < node_num; i++) {
+++ if (numa_node_to_cpus(i, cpu_map, cpu_map_size * sizeof(unsigned long)) != -1) {
+++ for (size_t j = 0; j < cpu_map_valid_size; j++) {
+++ if (cpu_map[j] != 0) {
+++ for (size_t k = 0; k < BitsPerCLong; k++) {
+++ if (cpu_map[j] & (1UL << k)) {
+++ cpu_to_node()->at_put(j * BitsPerCLong + k, i);
+++ }
+++ }
+++ }
+++ }
+++ }
+++ }
+++ FREE_C_HEAP_ARRAY(unsigned long, cpu_map, mtInternal);
+++}
+++
+++int os::Linux::get_node_by_cpu(int cpu_id) {
+++ if (cpu_to_node() != NULL && cpu_id >= 0 && cpu_id < cpu_to_node()->length()) {
+++ return cpu_to_node()->at(cpu_id);
+++ }
+++ return -1;
+++}
+++
+++GrowableArray<int>* os::Linux::_cpu_to_node;
+++os::Linux::sched_getcpu_func_t os::Linux::_sched_getcpu;
+++os::Linux::numa_node_to_cpus_func_t os::Linux::_numa_node_to_cpus;
+++os::Linux::numa_max_node_func_t os::Linux::_numa_max_node;
+++os::Linux::numa_available_func_t os::Linux::_numa_available;
+++os::Linux::numa_tonode_memory_func_t os::Linux::_numa_tonode_memory;
+++os::Linux::numa_interleave_memory_func_t os::Linux::_numa_interleave_memory;
+++unsigned long* os::Linux::_numa_all_nodes;
+++
+++bool os::pd_uncommit_memory(char* addr, size_t size) {
+++ uintptr_t res = (uintptr_t) ::mmap(addr, size, PROT_NONE,
+++ MAP_PRIVATE|MAP_FIXED|MAP_NORESERVE|MAP_ANONYMOUS, -1, 0);
+++ return res != (uintptr_t) MAP_FAILED;
+++}
+++
+++static
+++address get_stack_commited_bottom(address bottom, size_t size) {
+++ address nbot = bottom;
+++ address ntop = bottom + size;
+++
+++ size_t page_sz = os::vm_page_size();
+++ unsigned pages = size / page_sz;
+++
+++ unsigned char vec[1];
+++ unsigned imin = 1, imax = pages + 1, imid;
+++ int mincore_return_value;
+++
+++ while (imin < imax) {
+++ imid = (imax + imin) / 2;
+++ nbot = ntop - (imid * page_sz);
+++
+++ // Use a trick with mincore to check whether the page is mapped or not.
+++ // mincore sets vec to 1 if page resides in memory and to 0 if page
+++ // is swapped output but if page we are asking for is unmapped
+++ // it returns -1,ENOMEM
+++ mincore_return_value = mincore(nbot, page_sz, vec);
+++
+++ if (mincore_return_value == -1) {
+++ // Page is not mapped go up
+++ // to find first mapped page
+++ if (errno != EAGAIN) {
+++ assert(errno == ENOMEM, "Unexpected mincore errno");
+++ imax = imid;
+++ }
+++ } else {
+++ // Page is mapped go down
+++ // to find first not mapped page
+++ imin = imid + 1;
+++ }
+++ }
+++
+++ nbot = nbot + page_sz;
+++
+++ // Adjust stack bottom one page up if last checked page is not mapped
+++ if (mincore_return_value == -1) {
+++ nbot = nbot + page_sz;
+++ }
+++
+++ return nbot;
+++}
+++
+++
+++// Linux uses a growable mapping for the stack, and if the mapping for
+++// the stack guard pages is not removed when we detach a thread the
+++// stack cannot grow beyond the pages where the stack guard was
+++// mapped. If at some point later in the process the stack expands to
+++// that point, the Linux kernel cannot expand the stack any further
+++// because the guard pages are in the way, and a segfault occurs.
+++//
+++// However, it's essential not to split the stack region by unmapping
+++// a region (leaving a hole) that's already part of the stack mapping,
+++// so if the stack mapping has already grown beyond the guard pages at
+++// the time we create them, we have to truncate the stack mapping.
+++// So, we need to know the extent of the stack mapping when
+++// create_stack_guard_pages() is called.
+++
+++// We only need this for stacks that are growable: at the time of
+++// writing thread stacks don't use growable mappings (i.e. those
+++// creeated with MAP_GROWSDOWN), and aren't marked "[stack]", so this
+++// only applies to the main thread.
+++
+++// If the (growable) stack mapping already extends beyond the point
+++// where we're going to put our guard pages, truncate the mapping at
+++// that point by munmap()ping it. This ensures that when we later
+++// munmap() the guard pages we don't leave a hole in the stack
+++// mapping. This only affects the main/initial thread
+++
+++bool os::pd_create_stack_guard_pages(char* addr, size_t size) {
+++
+++ if (os::Linux::is_initial_thread()) {
+++ // As we manually grow stack up to bottom inside create_attached_thread(),
+++ // it's likely that os::Linux::initial_thread_stack_bottom is mapped and
+++ // we don't need to do anything special.
+++ // Check it first, before calling heavy function.
+++ uintptr_t stack_extent = (uintptr_t) os::Linux::initial_thread_stack_bottom();
+++ unsigned char vec[1];
+++
+++ if (mincore((address)stack_extent, os::vm_page_size(), vec) == -1) {
+++ // Fallback to slow path on all errors, including EAGAIN
+++ stack_extent = (uintptr_t) get_stack_commited_bottom(
+++ os::Linux::initial_thread_stack_bottom(),
+++ (size_t)addr - stack_extent);
+++ }
+++
+++ if (stack_extent < (uintptr_t)addr) {
+++ ::munmap((void*)stack_extent, (uintptr_t)(addr - stack_extent));
+++ }
+++ }
+++
+++ return os::commit_memory(addr, size, !ExecMem);
+++}
+++
+++// If this is a growable mapping, remove the guard pages entirely by
+++// munmap()ping them. If not, just call uncommit_memory(). This only
+++// affects the main/initial thread, but guard against future OS changes
+++// It's safe to always unmap guard pages for initial thread because we
+++// always place it right after end of the mapped region
+++
+++bool os::remove_stack_guard_pages(char* addr, size_t size) {
+++ uintptr_t stack_extent, stack_base;
+++
+++ if (os::Linux::is_initial_thread()) {
+++ return ::munmap(addr, size) == 0;
+++ }
+++
+++ return os::uncommit_memory(addr, size);
+++}
+++
+++static address _highest_vm_reserved_address = NULL;
+++
+++// If 'fixed' is true, anon_mmap() will attempt to reserve anonymous memory
+++// at 'requested_addr'. If there are existing memory mappings at the same
+++// location, however, they will be overwritten. If 'fixed' is false,
+++// 'requested_addr' is only treated as a hint, the return value may or
+++// may not start from the requested address. Unlike Linux mmap(), this
+++// function returns NULL to indicate failure.
+++static char* anon_mmap(char* requested_addr, size_t bytes, bool fixed) {
+++ char * addr;
+++ int flags;
+++
+++ flags = MAP_PRIVATE | MAP_NORESERVE | MAP_ANONYMOUS;
+++ if (fixed) {
+++ assert((uintptr_t)requested_addr % os::Linux::page_size() == 0, "unaligned address");
+++ flags |= MAP_FIXED;
+++ }
+++
+++ // Map uncommitted pages PROT_READ and PROT_WRITE, change access
+++ // to PROT_EXEC if executable when we commit the page.
+++ addr = (char*)::mmap(requested_addr, bytes, PROT_READ|PROT_WRITE,
+++ flags, -1, 0);
+++
+++ if (addr != MAP_FAILED) {
+++ // anon_mmap() should only get called during VM initialization,
+++ // don't need lock (actually we can skip locking even it can be called
+++ // from multiple threads, because _highest_vm_reserved_address is just a
+++ // hint about the upper limit of non-stack memory regions.)
+++ if ((address)addr + bytes > _highest_vm_reserved_address) {
+++ _highest_vm_reserved_address = (address)addr + bytes;
+++ }
+++ }
+++
+++ return addr == MAP_FAILED ? NULL : addr;
+++}
+++
+++// Don't update _highest_vm_reserved_address, because there might be memory
+++// regions above addr + size. If so, releasing a memory region only creates
+++// a hole in the address space, it doesn't help prevent heap-stack collision.
+++//
+++static int anon_munmap(char * addr, size_t size) {
+++ return ::munmap(addr, size) == 0;
+++}
+++
+++char* os::pd_reserve_memory(size_t bytes, char* requested_addr,
+++ size_t alignment_hint) {
+++ return anon_mmap(requested_addr, bytes, (requested_addr != NULL));
+++}
+++
+++bool os::pd_release_memory(char* addr, size_t size) {
+++ return anon_munmap(addr, size);
+++}
+++
+++static address highest_vm_reserved_address() {
+++ return _highest_vm_reserved_address;
+++}
+++
+++static bool linux_mprotect(char* addr, size_t size, int prot) {
+++ // Linux wants the mprotect address argument to be page aligned.
+++ char* bottom = (char*)align_size_down((intptr_t)addr, os::Linux::page_size());
+++
+++ // According to SUSv3, mprotect() should only be used with mappings
+++ // established by mmap(), and mmap() always maps whole pages. Unaligned
+++ // 'addr' likely indicates problem in the VM (e.g. trying to change
+++ // protection of malloc'ed or statically allocated memory). Check the
+++ // caller if you hit this assert.
+++ assert(addr == bottom, "sanity check");
+++
+++ size = align_size_up(pointer_delta(addr, bottom, 1) + size, os::Linux::page_size());
+++ return ::mprotect(bottom, size, prot) == 0;
+++}
+++
+++// Set protections specified
+++bool os::protect_memory(char* addr, size_t bytes, ProtType prot,
+++ bool is_committed) {
+++ unsigned int p = 0;
+++ switch (prot) {
+++ case MEM_PROT_NONE: p = PROT_NONE; break;
+++ case MEM_PROT_READ: p = PROT_READ; break;
+++ case MEM_PROT_RW: p = PROT_READ|PROT_WRITE; break;
+++ case MEM_PROT_RWX: p = PROT_READ|PROT_WRITE|PROT_EXEC; break;
+++ default:
+++ ShouldNotReachHere();
+++ }
+++ // is_committed is unused.
+++ return linux_mprotect(addr, bytes, p);
+++}
+++
+++bool os::guard_memory(char* addr, size_t size) {
+++ return linux_mprotect(addr, size, PROT_NONE);
+++}
+++
+++bool os::unguard_memory(char* addr, size_t size) {
+++ return linux_mprotect(addr, size, PROT_READ|PROT_WRITE);
+++}
+++
+++bool os::Linux::hugetlbfs_sanity_check(bool warn, size_t page_size) {
+++ bool result = false;
+++ void *p = mmap (NULL, page_size, PROT_READ|PROT_WRITE,
+++ MAP_ANONYMOUS|MAP_PRIVATE|MAP_HUGETLB,
+++ -1, 0);
+++
+++ if (p != MAP_FAILED) {
+++ // We don't know if this really is a huge page or not.
+++ FILE *fp = fopen("/proc/self/maps", "r");
+++ if (fp) {
+++ while (!feof(fp)) {
+++ char chars[257];
+++ long x = 0;
+++ if (fgets(chars, sizeof(chars), fp)) {
+++ if (sscanf(chars, "%lx-%*x", &x) == 1
+++ && x == (long)p) {
+++ if (strstr (chars, "hugepage")) {
+++ result = true;
+++ break;
+++ }
+++ }
+++ }
+++ }
+++ fclose(fp);
+++ }
+++ munmap (p, page_size);
+++ if (result)
+++ return true;
+++ }
+++
+++ if (warn) {
+++ warning("HugeTLBFS is not supported by the operating system.");
+++ }
+++
+++ return result;
+++}
+++
+++/*
+++* Set the coredump_filter bits to include largepages in core dump (bit 6)
+++*
+++* From the coredump_filter documentation:
+++*
+++* - (bit 0) anonymous private memory
+++* - (bit 1) anonymous shared memory
+++* - (bit 2) file-backed private memory
+++* - (bit 3) file-backed shared memory
+++* - (bit 4) ELF header pages in file-backed private memory areas (it is
+++* effective only if the bit 2 is cleared)
+++* - (bit 5) hugetlb private memory
+++* - (bit 6) hugetlb shared memory
+++*/
+++static void set_coredump_filter(void) {
+++ FILE *f;
+++ long cdm;
+++
+++ if ((f = fopen("/proc/self/coredump_filter", "r+")) == NULL) {
+++ return;
+++ }
+++
+++ if (fscanf(f, "%lx", &cdm) != 1) {
+++ fclose(f);
+++ return;
+++ }
+++
+++ rewind(f);
+++
+++ if ((cdm & LARGEPAGES_BIT) == 0) {
+++ cdm |= LARGEPAGES_BIT;
+++ fprintf(f, "%#lx", cdm);
+++ }
+++
+++ fclose(f);
+++}
+++
+++// Large page support
+++
+++static size_t _large_page_size = 0;
+++
+++void os::large_page_init() {
+++ if (!UseLargePages) {
+++ UseHugeTLBFS = false;
+++ UseSHM = false;
+++ return;
+++ }
+++
+++ if (FLAG_IS_DEFAULT(UseHugeTLBFS) && FLAG_IS_DEFAULT(UseSHM)) {
+++ // If UseLargePages is specified on the command line try both methods,
+++ // if it's default, then try only HugeTLBFS.
+++ if (FLAG_IS_DEFAULT(UseLargePages)) {
+++ UseHugeTLBFS = true;
+++ } else {
+++ UseHugeTLBFS = UseSHM = true;
+++ }
+++ }
+++
+++ if (LargePageSizeInBytes) {
+++ _large_page_size = LargePageSizeInBytes;
+++ } else {
+++ // large_page_size on Linux is used to round up heap size. x86 uses either
+++ // 2M or 4M page, depending on whether PAE (Physical Address Extensions)
+++ // mode is enabled. AMD64/EM64T uses 2M page in 64bit mode. IA64 can use
+++ // page as large as 256M.
+++ //
+++ // Here we try to figure out page size by parsing /proc/meminfo and looking
+++ // for a line with the following format:
+++ // Hugepagesize: 2048 kB
+++ //
+++ // If we can't determine the value (e.g. /proc is not mounted, or the text
+++ // format has been changed), we'll use the largest page size supported by
+++ // the processor.
+++
+++#ifndef ZERO
+++ _large_page_size = IA32_ONLY(4 * M) AMD64_ONLY(2 * M) IA64_ONLY(256 * M) SPARC_ONLY(4 * M)
+++ ARM_ONLY(2 * M) PPC_ONLY(4 * M);
+++#endif // ZERO
+++
+++ FILE *fp = fopen("/proc/meminfo", "r");
+++ if (fp) {
+++ while (!feof(fp)) {
+++ int x = 0;
+++ char buf[16];
+++ if (fscanf(fp, "Hugepagesize: %d", &x) == 1) {
+++ if (x && fgets(buf, sizeof(buf), fp) && strcmp(buf, " kB\n") == 0) {
+++ _large_page_size = x * K;
+++ break;
+++ }
+++ } else {
+++ // skip to next line
+++ for (;;) {
+++ int ch = fgetc(fp);
+++ if (ch == EOF || ch == (int)'\n') break;
+++ }
+++ }
+++ }
+++ fclose(fp);
+++ }
+++ }
+++
+++ // print a warning if any large page related flag is specified on command line
+++ bool warn_on_failure = !FLAG_IS_DEFAULT(UseHugeTLBFS);
+++
+++ const size_t default_page_size = (size_t)Linux::page_size();
+++ if (_large_page_size > default_page_size) {
+++ _page_sizes[0] = _large_page_size;
+++ _page_sizes[1] = default_page_size;
+++ _page_sizes[2] = 0;
+++ }
+++ UseHugeTLBFS = UseHugeTLBFS &&
+++ Linux::hugetlbfs_sanity_check(warn_on_failure, _large_page_size);
+++
+++ if (UseHugeTLBFS)
+++ UseSHM = false;
+++
+++ UseLargePages = UseHugeTLBFS || UseSHM;
+++
+++ set_coredump_filter();
+++}
+++
+++#ifndef SHM_HUGETLB
+++#define SHM_HUGETLB 04000
+++#endif
+++
+++char* os::reserve_memory_special(size_t bytes, char* req_addr, bool exec) {
+++ // "exec" is passed in but not used. Creating the shared image for
+++ // the code cache doesn't have an SHM_X executable permission to check.
+++ assert(UseLargePages && UseSHM, "only for SHM large pages");
+++
+++ key_t key = IPC_PRIVATE;
+++ char *addr;
+++
+++ bool warn_on_failure = UseLargePages &&
+++ (!FLAG_IS_DEFAULT(UseLargePages) ||
+++ !FLAG_IS_DEFAULT(LargePageSizeInBytes)
+++ );
+++ char msg[128];
+++
+++ // Create a large shared memory region to attach to based on size.
+++ // Currently, size is the total size of the heap
+++ int shmid = shmget(key, bytes, SHM_HUGETLB|IPC_CREAT|SHM_R|SHM_W);
+++ if (shmid == -1) {
+++ // Possible reasons for shmget failure:
+++ // 1. shmmax is too small for Java heap.
+++ // > check shmmax value: cat /proc/sys/kernel/shmmax
+++ // > increase shmmax value: echo "0xffffffff" > /proc/sys/kernel/shmmax
+++ // 2. not enough large page memory.
+++ // > check available large pages: cat /proc/meminfo
+++ // > increase amount of large pages:
+++ // echo new_value > /proc/sys/vm/nr_hugepages
+++ // Note 1: different Linux may use different name for this property,
+++ // e.g. on Redhat AS-3 it is "hugetlb_pool".
+++ // Note 2: it's possible there's enough physical memory available but
+++ // they are so fragmented after a long run that they can't
+++ // coalesce into large pages. Try to reserve large pages when
+++ // the system is still "fresh".
+++ if (warn_on_failure) {
+++ jio_snprintf(msg, sizeof(msg), "Failed to reserve shared memory (errno = %d).", errno);
+++ warning(msg);
+++ }
+++ return NULL;
+++ }
+++
+++ // attach to the region
+++ addr = (char*)shmat(shmid, req_addr, 0);
+++ int err = errno;
+++
+++ // Remove shmid. If shmat() is successful, the actual shared memory segment
+++ // will be deleted when it's detached by shmdt() or when the process
+++ // terminates. If shmat() is not successful this will remove the shared
+++ // segment immediately.
+++ shmctl(shmid, IPC_RMID, NULL);
+++
+++ if ((intptr_t)addr == -1) {
+++ if (warn_on_failure) {
+++ jio_snprintf(msg, sizeof(msg), "Failed to attach shared memory (errno = %d).", err);
+++ warning(msg);
+++ }
+++ return NULL;
+++ }
+++
+++ if ((addr != NULL) && UseNUMAInterleaving) {
+++ numa_make_global(addr, bytes);
+++ }
+++
+++ // The memory is committed
+++ MemTracker::record_virtual_memory_reserve_and_commit((address)addr, bytes, mtNone, CALLER_PC);
+++
+++ return addr;
+++}
+++
+++bool os::release_memory_special(char* base, size_t bytes) {
+++ MemTracker::Tracker tkr = MemTracker::get_virtual_memory_release_tracker();
+++ // detaching the SHM segment will also delete it, see reserve_memory_special()
+++ int rslt = shmdt(base);
+++ if (rslt == 0) {
+++ tkr.record((address)base, bytes);
+++ return true;
+++ } else {
+++ tkr.discard();
+++ return false;
+++ }
+++}
+++
+++size_t os::large_page_size() {
+++ return _large_page_size;
+++}
+++
+++// HugeTLBFS allows application to commit large page memory on demand;
+++// with SysV SHM the entire memory region must be allocated as shared
+++// memory.
+++bool os::can_commit_large_page_memory() {
+++ return UseHugeTLBFS;
+++}
+++
+++bool os::can_execute_large_page_memory() {
+++ return UseHugeTLBFS;
+++}
+++
+++// Reserve memory at an arbitrary address, only if that area is
+++// available (and not reserved for something else).
+++
+++char* os::pd_attempt_reserve_memory_at(size_t bytes, char* requested_addr) {
+++ const int max_tries = 10;
+++ char* base[max_tries];
+++ size_t size[max_tries];
+++ const size_t gap = 0x000000;
+++
+++ // Assert only that the size is a multiple of the page size, since
+++ // that's all that mmap requires, and since that's all we really know
+++ // about at this low abstraction level. If we need higher alignment,
+++ // we can either pass an alignment to this method or verify alignment
+++ // in one of the methods further up the call chain. See bug 5044738.
+++ assert(bytes % os::vm_page_size() == 0, "reserving unexpected size block");
+++
+++ // Repeatedly allocate blocks until the block is allocated at the
+++ // right spot. Give up after max_tries. Note that reserve_memory() will
+++ // automatically update _highest_vm_reserved_address if the call is
+++ // successful. The variable tracks the highest memory address every reserved
+++ // by JVM. It is used to detect heap-stack collision if running with
+++ // fixed-stack LinuxThreads. Because here we may attempt to reserve more
+++ // space than needed, it could confuse the collision detecting code. To
+++ // solve the problem, save current _highest_vm_reserved_address and
+++ // calculate the correct value before return.
+++ address old_highest = _highest_vm_reserved_address;
+++
+++ // Linux mmap allows caller to pass an address as hint; give it a try first,
+++ // if kernel honors the hint then we can return immediately.
+++ char * addr = anon_mmap(requested_addr, bytes, false);
+++ if (addr == requested_addr) {
+++ return requested_addr;
+++ }
+++
+++ if (addr != NULL) {
+++ // mmap() is successful but it fails to reserve at the requested address
+++ anon_munmap(addr, bytes);
+++ }
+++
+++ int i;
+++ for (i = 0; i < max_tries; ++i) {
+++ base[i] = reserve_memory(bytes);
+++
+++ if (base[i] != NULL) {
+++ // Is this the block we wanted?
+++ if (base[i] == requested_addr) {
+++ size[i] = bytes;
+++ break;
+++ }
+++
+++ // Does this overlap the block we wanted? Give back the overlapped
+++ // parts and try again.
+++
+++ size_t top_overlap = requested_addr + (bytes + gap) - base[i];
+++ if (top_overlap >= 0 && top_overlap < bytes) {
+++ unmap_memory(base[i], top_overlap);
+++ base[i] += top_overlap;
+++ size[i] = bytes - top_overlap;
+++ } else {
+++ size_t bottom_overlap = base[i] + bytes - requested_addr;
+++ if (bottom_overlap >= 0 && bottom_overlap < bytes) {
+++ unmap_memory(requested_addr, bottom_overlap);
+++ size[i] = bytes - bottom_overlap;
+++ } else {
+++ size[i] = bytes;
+++ }
+++ }
+++ }
+++ }
+++
+++ // Give back the unused reserved pieces.
+++
+++ for (int j = 0; j < i; ++j) {
+++ if (base[j] != NULL) {
+++ unmap_memory(base[j], size[j]);
+++ }
+++ }
+++
+++ if (i < max_tries) {
+++ _highest_vm_reserved_address = MAX2(old_highest, (address)requested_addr + bytes);
+++ return requested_addr;
+++ } else {
+++ _highest_vm_reserved_address = old_highest;
+++ return NULL;
+++ }
+++}
+++
+++size_t os::read(int fd, void *buf, unsigned int nBytes) {
+++ return ::read(fd, buf, nBytes);
+++}
+++
+++// TODO-FIXME: reconcile Solaris' os::sleep with the linux variation.
+++// Solaris uses poll(), linux uses park().
+++// Poll() is likely a better choice, assuming that Thread.interrupt()
+++// generates a SIGUSRx signal. Note that SIGUSR1 can interfere with
+++// SIGSEGV, see 4355769.
+++
+++int os::sleep(Thread* thread, jlong millis, bool interruptible) {
+++ assert(thread == Thread::current(), "thread consistency check");
+++
+++ ParkEvent * const slp = thread->_SleepEvent ;
+++ slp->reset() ;
+++ OrderAccess::fence() ;
+++
+++ if (interruptible) {
+++ jlong prevtime = javaTimeNanos();
+++
+++ for (;;) {
+++ if (os::is_interrupted(thread, true)) {
+++ return OS_INTRPT;
+++ }
+++
+++ jlong newtime = javaTimeNanos();
+++
+++ if (newtime - prevtime < 0) {
+++ // time moving backwards, should only happen if no monotonic clock
+++ // not a guarantee() because JVM should not abort on kernel/glibc bugs
+++ assert(!Linux::supports_monotonic_clock(), "time moving backwards");
+++ } else {
+++ millis -= (newtime - prevtime) / NANOSECS_PER_MILLISEC;
+++ }
+++
+++ if(millis <= 0) {
+++ return OS_OK;
+++ }
+++
+++ prevtime = newtime;
+++
+++ {
+++ assert(thread->is_Java_thread(), "sanity check");
+++ JavaThread *jt = (JavaThread *) thread;
+++ ThreadBlockInVM tbivm(jt);
+++ OSThreadWaitState osts(jt->osthread(), false /* not Object.wait() */);
+++
+++ jt->set_suspend_equivalent();
+++ // cleared by handle_special_suspend_equivalent_condition() or
+++ // java_suspend_self() via check_and_wait_while_suspended()
+++
+++ slp->park(millis);
+++
+++ // were we externally suspended while we were waiting?
+++ jt->check_and_wait_while_suspended();
+++ }
+++ }
+++ } else {
+++ OSThreadWaitState osts(thread->osthread(), false /* not Object.wait() */);
+++ jlong prevtime = javaTimeNanos();
+++
+++ for (;;) {
+++ // It'd be nice to avoid the back-to-back javaTimeNanos() calls on
+++ // the 1st iteration ...
+++ jlong newtime = javaTimeNanos();
+++
+++ if (newtime - prevtime < 0) {
+++ // time moving backwards, should only happen if no monotonic clock
+++ // not a guarantee() because JVM should not abort on kernel/glibc bugs
+++ assert(!Linux::supports_monotonic_clock(), "time moving backwards");
+++ } else {
+++ millis -= (newtime - prevtime) / NANOSECS_PER_MILLISEC;
+++ }
+++
+++ if(millis <= 0) break ;
+++
+++ prevtime = newtime;
+++ slp->park(millis);
+++ }
+++ return OS_OK ;
+++ }
+++}
+++
+++int os::naked_sleep() {
+++ // %% make the sleep time an integer flag. for now use 1 millisec.
+++ return os::sleep(Thread::current(), 1, false);
+++}
+++
+++// Sleep forever; naked call to OS-specific sleep; use with CAUTION
+++void os::infinite_sleep() {
+++ while (true) { // sleep forever ...
+++ ::sleep(100); // ... 100 seconds at a time
+++ }
+++}
+++
+++// Used to convert frequent JVM_Yield() to nops
+++bool os::dont_yield() {
+++ return DontYieldALot;
+++}
+++
+++void os::yield() {
+++ sched_yield();
+++}
+++
+++os::YieldResult os::NakedYield() { sched_yield(); return os::YIELD_UNKNOWN ;}
+++
+++void os::yield_all(int attempts) {
+++ // Yields to all threads, including threads with lower priorities
+++ // Threads on Linux are all with same priority. The Solaris style
+++ // os::yield_all() with nanosleep(1ms) is not necessary.
+++ sched_yield();
+++}
+++
+++// Called from the tight loops to possibly influence time-sharing heuristics
+++void os::loop_breaker(int attempts) {
+++ os::yield_all(attempts);
+++}
+++
+++////////////////////////////////////////////////////////////////////////////////
+++// thread priority support
+++
+++// Note: Normal Linux applications are run with SCHED_OTHER policy. SCHED_OTHER
+++// only supports dynamic priority, static priority must be zero. For real-time
+++// applications, Linux supports SCHED_RR which allows static priority (1-99).
+++// However, for large multi-threaded applications, SCHED_RR is not only slower
+++// than SCHED_OTHER, but also very unstable (my volano tests hang hard 4 out
+++// of 5 runs - Sep 2005).
+++//
+++// The following code actually changes the niceness of kernel-thread/LWP. It
+++// has an assumption that setpriority() only modifies one kernel-thread/LWP,
+++// not the entire user process, and user level threads are 1:1 mapped to kernel
+++// threads. It has always been the case, but could change in the future. For
+++// this reason, the code should not be used as default (ThreadPriorityPolicy=0).
+++// It is only used when ThreadPriorityPolicy=1 and requires root privilege.
+++
+++int os::java_to_os_priority[CriticalPriority + 1] = {
+++ 19, // 0 Entry should never be used
+++
+++ 4, // 1 MinPriority
+++ 3, // 2
+++ 2, // 3
+++
+++ 1, // 4
+++ 0, // 5 NormPriority
+++ -1, // 6
+++
+++ -2, // 7
+++ -3, // 8
+++ -4, // 9 NearMaxPriority
+++
+++ -5, // 10 MaxPriority
+++
+++ -5 // 11 CriticalPriority
+++};
+++
+++static int prio_init() {
+++ if (ThreadPriorityPolicy == 1) {
+++ // Only root can raise thread priority. Don't allow ThreadPriorityPolicy=1
+++ // if effective uid is not root. Perhaps, a more elegant way of doing
+++ // this is to test CAP_SYS_NICE capability, but that will require libcap.so
+++ if (geteuid() != 0) {
+++ if (!FLAG_IS_DEFAULT(ThreadPriorityPolicy)) {
+++ warning("-XX:ThreadPriorityPolicy requires root privilege on Linux");
+++ }
+++ ThreadPriorityPolicy = 0;
+++ }
+++ }
+++ if (UseCriticalJavaThreadPriority) {
+++ os::java_to_os_priority[MaxPriority] = os::java_to_os_priority[CriticalPriority];
+++ }
+++ return 0;
+++}
+++
+++OSReturn os::set_native_priority(Thread* thread, int newpri) {
+++ if ( !UseThreadPriorities || ThreadPriorityPolicy == 0 ) return OS_OK;
+++
+++ int ret = setpriority(PRIO_PROCESS, thread->osthread()->thread_id(), newpri);
+++ return (ret == 0) ? OS_OK : OS_ERR;
+++}
+++
+++OSReturn os::get_native_priority(const Thread* const thread, int *priority_ptr) {
+++ if ( !UseThreadPriorities || ThreadPriorityPolicy == 0 ) {
+++ *priority_ptr = java_to_os_priority[NormPriority];
+++ return OS_OK;
+++ }
+++
+++ errno = 0;
+++ *priority_ptr = getpriority(PRIO_PROCESS, thread->osthread()->thread_id());
+++ return (*priority_ptr != -1 || errno == 0 ? OS_OK : OS_ERR);
+++}
+++
+++// Hint to the underlying OS that a task switch would not be good.
+++// Void return because it's a hint and can fail.
+++void os::hint_no_preempt() {}
+++
+++////////////////////////////////////////////////////////////////////////////////
+++// suspend/resume support
+++
+++// the low-level signal-based suspend/resume support is a remnant from the
+++// old VM-suspension that used to be for java-suspension, safepoints etc,
+++// within hotspot. Now there is a single use-case for this:
+++// - calling get_thread_pc() on the VMThread by the flat-profiler task
+++// that runs in the watcher thread.
+++// The remaining code is greatly simplified from the more general suspension
+++// code that used to be used.
+++//
+++// The protocol is quite simple:
+++// - suspend:
+++// - sends a signal to the target thread
+++// - polls the suspend state of the osthread using a yield loop
+++// - target thread signal handler (SR_handler) sets suspend state
+++// and blocks in sigsuspend until continued
+++// - resume:
+++// - sets target osthread state to continue
+++// - sends signal to end the sigsuspend loop in the SR_handler
+++//
+++// Note that the SR_lock plays no role in this suspend/resume protocol.
+++//
+++
+++static void resume_clear_context(OSThread *osthread) {
+++ osthread->set_ucontext(NULL);
+++ osthread->set_siginfo(NULL);
+++}
+++
+++static void suspend_save_context(OSThread *osthread, siginfo_t* siginfo, ucontext_t* context) {
+++ osthread->set_ucontext(context);
+++ osthread->set_siginfo(siginfo);
+++}
+++
+++//
+++// Handler function invoked when a thread's execution is suspended or
+++// resumed. We have to be careful that only async-safe functions are
+++// called here (Note: most pthread functions are not async safe and
+++// should be avoided.)
+++//
+++// Note: sigwait() is a more natural fit than sigsuspend() from an
+++// interface point of view, but sigwait() prevents the signal hander
+++// from being run. libpthread would get very confused by not having
+++// its signal handlers run and prevents sigwait()'s use with the
+++// mutex granting granting signal.
+++//
+++// Currently only ever called on the VMThread and JavaThreads (PC sampling)
+++//
+++static void SR_handler(int sig, siginfo_t* siginfo, ucontext_t* context) {
+++ // Save and restore errno to avoid confusing native code with EINTR
+++ // after sigsuspend.
+++ int old_errno = errno;
+++
+++ Thread* thread = Thread::current();
+++ OSThread* osthread = thread->osthread();
+++ assert(thread->is_VM_thread() || thread->is_Java_thread(), "Must be VMThread or JavaThread");
+++
+++ os::SuspendResume::State current = osthread->sr.state();
+++ if (current == os::SuspendResume::SR_SUSPEND_REQUEST) {
+++ suspend_save_context(osthread, siginfo, context);
+++
+++ // attempt to switch the state, we assume we had a SUSPEND_REQUEST
+++ os::SuspendResume::State state = osthread->sr.suspended();
+++ if (state == os::SuspendResume::SR_SUSPENDED) {
+++ sigset_t suspend_set; // signals for sigsuspend()
+++
+++ // get current set of blocked signals and unblock resume signal
+++ pthread_sigmask(SIG_BLOCK, NULL, &suspend_set);
+++ sigdelset(&suspend_set, SR_signum);
+++
+++ sr_semaphore.signal();
+++ // wait here until we are resumed
+++ while (1) {
+++ sigsuspend(&suspend_set);
+++
+++ os::SuspendResume::State result = osthread->sr.running();
+++ if (result == os::SuspendResume::SR_RUNNING) {
+++ sr_semaphore.signal();
+++ break;
+++ }
+++ }
+++
+++ } else if (state == os::SuspendResume::SR_RUNNING) {
+++ // request was cancelled, continue
+++ } else {
+++ ShouldNotReachHere();
+++ }
+++
+++ resume_clear_context(osthread);
+++ } else if (current == os::SuspendResume::SR_RUNNING) {
+++ // request was cancelled, continue
+++ } else if (current == os::SuspendResume::SR_WAKEUP_REQUEST) {
+++ // ignore
+++ } else {
+++ // ignore
+++ }
+++
+++ errno = old_errno;
+++}
+++
+++
+++static int SR_initialize() {
+++ struct sigaction act;
+++ char *s;
+++ /* Get signal number to use for suspend/resume */
+++ if ((s = ::getenv("_JAVA_SR_SIGNUM")) != 0) {
+++ int sig = ::strtol(s, 0, 10);
+++ if (sig > 0 || sig < _NSIG) {
+++ SR_signum = sig;
+++ }
+++ }
+++
+++ assert(SR_signum > SIGSEGV && SR_signum > SIGBUS,
+++ "SR_signum must be greater than max(SIGSEGV, SIGBUS), see 4355769");
+++
+++ sigemptyset(&SR_sigset);
+++ sigaddset(&SR_sigset, SR_signum);
+++
+++ /* Set up signal handler for suspend/resume */
+++ act.sa_flags = SA_RESTART|SA_SIGINFO;
+++ act.sa_handler = (void (*)(int)) SR_handler;
+++
+++ // SR_signum is blocked by default.
+++ // 4528190 - We also need to block pthread restart signal (32 on all
+++ // supported Linux platforms). Note that LinuxThreads need to block
+++ // this signal for all threads to work properly. So we don't have
+++ // to use hard-coded signal number when setting up the mask.
+++ pthread_sigmask(SIG_BLOCK, NULL, &act.sa_mask);
+++
+++ if (sigaction(SR_signum, &act, 0) == -1) {
+++ return -1;
+++ }
+++
+++ // Save signal flag
+++ os::Linux::set_our_sigflags(SR_signum, act.sa_flags);
+++ return 0;
+++}
+++
+++static int SR_finalize() {
+++ return 0;
+++}
+++
+++static int sr_notify(OSThread* osthread) {
+++ int status = pthread_kill(osthread->pthread_id(), SR_signum);
+++ assert_status(status == 0, status, "pthread_kill");
+++ return status;
+++}
+++
+++// "Randomly" selected value for how long we want to spin
+++// before bailing out on suspending a thread, also how often
+++// we send a signal to a thread we want to resume
+++static const int RANDOMLY_LARGE_INTEGER = 1000000;
+++static const int RANDOMLY_LARGE_INTEGER2 = 100;
+++
+++// returns true on success and false on error - really an error is fatal
+++// but this seems the normal response to library errors
+++static bool do_suspend(OSThread* osthread) {
+++ assert(osthread->sr.is_running(), "thread should be running");
+++ assert(!sr_semaphore.trywait(), "semaphore has invalid state");
+++
+++ // mark as suspended and send signal
+++ if (osthread->sr.request_suspend() != os::SuspendResume::SR_SUSPEND_REQUEST) {
+++ // failed to switch, state wasn't running?
+++ ShouldNotReachHere();
+++ return false;
+++ }
+++
+++ if (sr_notify(osthread) != 0) {
+++ ShouldNotReachHere();
+++ }
+++
+++ // managed to send the signal and switch to SUSPEND_REQUEST, now wait for SUSPENDED
+++ while (true) {
+++ if (sr_semaphore.timedwait(0, 2 * NANOSECS_PER_MILLISEC)) {
+++ break;
+++ } else {
+++ // timeout
+++ os::SuspendResume::State cancelled = osthread->sr.cancel_suspend();
+++ if (cancelled == os::SuspendResume::SR_RUNNING) {
+++ return false;
+++ } else if (cancelled == os::SuspendResume::SR_SUSPENDED) {
+++ // make sure that we consume the signal on the semaphore as well
+++ sr_semaphore.wait();
+++ break;
+++ } else {
+++ ShouldNotReachHere();
+++ return false;
+++ }
+++ }
+++ }
+++
+++ guarantee(osthread->sr.is_suspended(), "Must be suspended");
+++ return true;
+++}
+++
+++static void do_resume(OSThread* osthread) {
+++ assert(osthread->sr.is_suspended(), "thread should be suspended");
+++ assert(!sr_semaphore.trywait(), "invalid semaphore state");
+++
+++ if (osthread->sr.request_wakeup() != os::SuspendResume::SR_WAKEUP_REQUEST) {
+++ // failed to switch to WAKEUP_REQUEST
+++ ShouldNotReachHere();
+++ return;
+++ }
+++
+++ while (true) {
+++ if (sr_notify(osthread) == 0) {
+++ if (sr_semaphore.timedwait(0, 2 * NANOSECS_PER_MILLISEC)) {
+++ if (osthread->sr.is_running()) {
+++ return;
+++ }
+++ }
+++ } else {
+++ ShouldNotReachHere();
+++ }
+++ }
+++
+++ guarantee(osthread->sr.is_running(), "Must be running!");
+++}
+++
+++////////////////////////////////////////////////////////////////////////////////
+++// interrupt support
+++
+++void os::interrupt(Thread* thread) {
+++ assert(Thread::current() == thread || Threads_lock->owned_by_self(),
+++ "possibility of dangling Thread pointer");
+++
+++ OSThread* osthread = thread->osthread();
+++
+++ if (!osthread->interrupted()) {
+++ osthread->set_interrupted(true);
+++ // More than one thread can get here with the same value of osthread,
+++ // resulting in multiple notifications. We do, however, want the store
+++ // to interrupted() to be visible to other threads before we execute unpark().
+++ OrderAccess::fence();
+++ ParkEvent * const slp = thread->_SleepEvent ;
+++ if (slp != NULL) slp->unpark() ;
+++ }
+++
+++ // For JSR166. Unpark even if interrupt status already was set
+++ if (thread->is_Java_thread())
+++ ((JavaThread*)thread)->parker()->unpark();
+++
+++ ParkEvent * ev = thread->_ParkEvent ;
+++ if (ev != NULL) ev->unpark() ;
+++
+++}
+++
+++bool os::is_interrupted(Thread* thread, bool clear_interrupted) {
+++ assert(Thread::current() == thread || Threads_lock->owned_by_self(),
+++ "possibility of dangling Thread pointer");
+++
+++ OSThread* osthread = thread->osthread();
+++
+++ bool interrupted = osthread->interrupted();
+++
+++ if (interrupted && clear_interrupted) {
+++ osthread->set_interrupted(false);
+++ // consider thread->_SleepEvent->reset() ... optional optimization
+++ }
+++
+++ return interrupted;
+++}
+++
+++///////////////////////////////////////////////////////////////////////////////////
+++// signal handling (except suspend/resume)
+++
+++// This routine may be used by user applications as a "hook" to catch signals.
+++// The user-defined signal handler must pass unrecognized signals to this
+++// routine, and if it returns true (non-zero), then the signal handler must
+++// return immediately. If the flag "abort_if_unrecognized" is true, then this
+++// routine will never retun false (zero), but instead will execute a VM panic
+++// routine kill the process.
+++//
+++// If this routine returns false, it is OK to call it again. This allows
+++// the user-defined signal handler to perform checks either before or after
+++// the VM performs its own checks. Naturally, the user code would be making
+++// a serious error if it tried to handle an exception (such as a null check
+++// or breakpoint) that the VM was generating for its own correct operation.
+++//
+++// This routine may recognize any of the following kinds of signals:
+++// SIGBUS, SIGSEGV, SIGILL, SIGFPE, SIGQUIT, SIGPIPE, SIGXFSZ, SIGUSR1.
+++// It should be consulted by handlers for any of those signals.
+++//
+++// The caller of this routine must pass in the three arguments supplied
+++// to the function referred to in the "sa_sigaction" (not the "sa_handler")
+++// field of the structure passed to sigaction(). This routine assumes that
+++// the sa_flags field passed to sigaction() includes SA_SIGINFO and SA_RESTART.
+++//
+++// Note that the VM will print warnings if it detects conflicting signal
+++// handlers, unless invoked with the option "-XX:+AllowUserSignalHandlers".
+++//
+++extern "C" JNIEXPORT int
+++JVM_handle_linux_signal(int signo, siginfo_t* siginfo,
+++ void* ucontext, int abort_if_unrecognized);
+++
+++void signalHandler(int sig, siginfo_t* info, void* uc) {
+++ assert(info != NULL && uc != NULL, "it must be old kernel");
+++ JVM_handle_linux_signal(sig, info, uc, true);
+++}
+++
+++
+++// This boolean allows users to forward their own non-matching signals
+++// to JVM_handle_linux_signal, harmlessly.
+++bool os::Linux::signal_handlers_are_installed = false;
+++
+++// For signal-chaining
+++struct sigaction os::Linux::sigact[MAXSIGNUM];
+++unsigned int os::Linux::sigs = 0;
+++bool os::Linux::libjsig_is_loaded = false;
+++typedef struct sigaction *(*get_signal_t)(int);
+++get_signal_t os::Linux::get_signal_action = NULL;
+++
+++struct sigaction* os::Linux::get_chained_signal_action(int sig) {
+++ struct sigaction *actp = NULL;
+++
+++ if (libjsig_is_loaded) {
+++ // Retrieve the old signal handler from libjsig
+++ actp = (*get_signal_action)(sig);
+++ }
+++ if (actp == NULL) {
+++ // Retrieve the preinstalled signal handler from jvm
+++ actp = get_preinstalled_handler(sig);
+++ }
+++
+++ return actp;
+++}
+++
+++static bool call_chained_handler(struct sigaction *actp, int sig,
+++ siginfo_t *siginfo, void *context) {
+++ // Call the old signal handler
+++ if (actp->sa_handler == SIG_DFL) {
+++ // It's more reasonable to let jvm treat it as an unexpected exception
+++ // instead of taking the default action.
+++ return false;
+++ } else if (actp->sa_handler != SIG_IGN) {
+++ if ((actp->sa_flags & SA_NODEFER) == 0) {
+++ // automaticlly block the signal
+++ sigaddset(&(actp->sa_mask), sig);
+++ }
+++
+++ sa_handler_t hand;
+++ sa_sigaction_t sa;
+++ bool siginfo_flag_set = (actp->sa_flags & SA_SIGINFO) != 0;
+++ // retrieve the chained handler
+++ if (siginfo_flag_set) {
+++ sa = actp->sa_sigaction;
+++ } else {
+++ hand = actp->sa_handler;
+++ }
+++
+++ if ((actp->sa_flags & SA_RESETHAND) != 0) {
+++ actp->sa_handler = SIG_DFL;
+++ }
+++
+++ // try to honor the signal mask
+++ sigset_t oset;
+++ pthread_sigmask(SIG_SETMASK, &(actp->sa_mask), &oset);
+++
+++ // call into the chained handler
+++ if (siginfo_flag_set) {
+++ (*sa)(sig, siginfo, context);
+++ } else {
+++ (*hand)(sig);
+++ }
+++
+++ // restore the signal mask
+++ pthread_sigmask(SIG_SETMASK, &oset, 0);
+++ }
+++ // Tell jvm's signal handler the signal is taken care of.
+++ return true;
+++}
+++
+++bool os::Linux::chained_handler(int sig, siginfo_t* siginfo, void* context) {
+++ bool chained = false;
+++ // signal-chaining
+++ if (UseSignalChaining) {
+++ struct sigaction *actp = get_chained_signal_action(sig);
+++ if (actp != NULL) {
+++ chained = call_chained_handler(actp, sig, siginfo, context);
+++ }
+++ }
+++ return chained;
+++}
+++
+++struct sigaction* os::Linux::get_preinstalled_handler(int sig) {
+++ if ((( (unsigned int)1 << sig ) & sigs) != 0) {
+++ return &sigact[sig];
+++ }
+++ return NULL;
+++}
+++
+++void os::Linux::save_preinstalled_handler(int sig, struct sigaction& oldAct) {
+++ assert(sig > 0 && sig < MAXSIGNUM, "vm signal out of expected range");
+++ sigact[sig] = oldAct;
+++ sigs |= (unsigned int)1 << sig;
+++}
+++
+++// for diagnostic
+++int os::Linux::sigflags[MAXSIGNUM];
+++
+++int os::Linux::get_our_sigflags(int sig) {
+++ assert(sig > 0 && sig < MAXSIGNUM, "vm signal out of expected range");
+++ return sigflags[sig];
+++}
+++
+++void os::Linux::set_our_sigflags(int sig, int flags) {
+++ assert(sig > 0 && sig < MAXSIGNUM, "vm signal out of expected range");
+++ sigflags[sig] = flags;
+++}
+++
+++void os::Linux::set_signal_handler(int sig, bool set_installed) {
+++ // Check for overwrite.
+++ struct sigaction oldAct;
+++ sigaction(sig, (struct sigaction*)NULL, &oldAct);
+++
+++ void* oldhand = oldAct.sa_sigaction
+++ ? CAST_FROM_FN_PTR(void*, oldAct.sa_sigaction)
+++ : CAST_FROM_FN_PTR(void*, oldAct.sa_handler);
+++ if (oldhand != CAST_FROM_FN_PTR(void*, SIG_DFL) &&
+++ oldhand != CAST_FROM_FN_PTR(void*, SIG_IGN) &&
+++ oldhand != CAST_FROM_FN_PTR(void*, (sa_sigaction_t)signalHandler)) {
+++ if (AllowUserSignalHandlers || !set_installed) {
+++ // Do not overwrite; user takes responsibility to forward to us.
+++ return;
+++ } else if (UseSignalChaining) {
+++ // save the old handler in jvm
+++ save_preinstalled_handler(sig, oldAct);
+++ // libjsig also interposes the sigaction() call below and saves the
+++ // old sigaction on it own.
+++ } else {
+++ fatal(err_msg("Encountered unexpected pre-existing sigaction handler "
+++ "%#lx for signal %d.", (long)oldhand, sig));
+++ }
+++ }
+++
+++ struct sigaction sigAct;
+++ sigfillset(&(sigAct.sa_mask));
+++ sigAct.sa_handler = SIG_DFL;
+++ if (!set_installed) {
+++ sigAct.sa_flags = SA_SIGINFO|SA_RESTART;
+++ } else {
+++ sigAct.sa_sigaction = signalHandler;
+++ sigAct.sa_flags = SA_SIGINFO|SA_RESTART;
+++ }
+++ // Save flags, which are set by ours
+++ assert(sig > 0 && sig < MAXSIGNUM, "vm signal out of expected range");
+++ sigflags[sig] = sigAct.sa_flags;
+++
+++ int ret = sigaction(sig, &sigAct, &oldAct);
+++ assert(ret == 0, "check");
+++
+++ void* oldhand2 = oldAct.sa_sigaction
+++ ? CAST_FROM_FN_PTR(void*, oldAct.sa_sigaction)
+++ : CAST_FROM_FN_PTR(void*, oldAct.sa_handler);
+++ assert(oldhand2 == oldhand, "no concurrent signal handler installation");
+++}
+++
+++// install signal handlers for signals that HotSpot needs to
+++// handle in order to support Java-level exception handling.
+++
+++void os::Linux::install_signal_handlers() {
+++ if (!signal_handlers_are_installed) {
+++ signal_handlers_are_installed = true;
+++
+++ // signal-chaining
+++ typedef void (*signal_setting_t)();
+++ signal_setting_t begin_signal_setting = NULL;
+++ signal_setting_t end_signal_setting = NULL;
+++ begin_signal_setting = CAST_TO_FN_PTR(signal_setting_t,
+++ dlsym(RTLD_DEFAULT, "JVM_begin_signal_setting"));
+++ if (begin_signal_setting != NULL) {
+++ end_signal_setting = CAST_TO_FN_PTR(signal_setting_t,
+++ dlsym(RTLD_DEFAULT, "JVM_end_signal_setting"));
+++ get_signal_action = CAST_TO_FN_PTR(get_signal_t,
+++ dlsym(RTLD_DEFAULT, "JVM_get_signal_action"));
+++ libjsig_is_loaded = true;
+++ assert(UseSignalChaining, "should enable signal-chaining");
+++ }
+++ if (libjsig_is_loaded) {
+++ // Tell libjsig jvm is setting signal handlers
+++ (*begin_signal_setting)();
+++ }
+++
+++ set_signal_handler(SIGSEGV, true);
+++ set_signal_handler(SIGPIPE, true);
+++ set_signal_handler(SIGBUS, true);
+++ set_signal_handler(SIGILL, true);
+++ set_signal_handler(SIGFPE, true);
+++ set_signal_handler(SIGXFSZ, true);
+++
+++ if (libjsig_is_loaded) {
+++ // Tell libjsig jvm finishes setting signal handlers
+++ (*end_signal_setting)();
+++ }
+++
+++ // We don't activate signal checker if libjsig is in place, we trust ourselves
+++ // and if UserSignalHandler is installed all bets are off.
+++ // Log that signal checking is off only if -verbose:jni is specified.
+++ if (CheckJNICalls) {
+++ if (libjsig_is_loaded) {
+++ if (PrintJNIResolving) {
+++ tty->print_cr("Info: libjsig is activated, all active signal checking is disabled");
+++ }
+++ check_signals = false;
+++ }
+++ if (AllowUserSignalHandlers) {
+++ if (PrintJNIResolving) {
+++ tty->print_cr("Info: AllowUserSignalHandlers is activated, all active signal checking is disabled");
+++ }
+++ check_signals = false;
+++ }
+++ }
+++ }
+++}
+++
+++// This is the fastest way to get thread cpu time on Linux.
+++// Returns cpu time (user+sys) for any thread, not only for current.
+++// POSIX compliant clocks are implemented in the kernels 2.6.16+.
+++// It might work on 2.6.10+ with a special kernel/glibc patch.
+++// For reference, please, see IEEE Std 1003.1-2004:
+++// http://www.unix.org/single_unix_specification
+++
+++jlong os::Linux::fast_thread_cpu_time(clockid_t clockid) {
+++ struct timespec tp;
+++ int rc = os::Linux::clock_gettime(clockid, &tp);
+++ assert(rc == 0, "clock_gettime is expected to return 0 code");
+++
+++ return (tp.tv_sec * NANOSECS_PER_SEC) + tp.tv_nsec;
+++}
+++
+++/////
+++// glibc on Linux platform uses non-documented flag
+++// to indicate, that some special sort of signal
+++// trampoline is used.
+++// We will never set this flag, and we should
+++// ignore this flag in our diagnostic
+++#ifdef SIGNIFICANT_SIGNAL_MASK
+++#undef SIGNIFICANT_SIGNAL_MASK
+++#endif
+++#define SIGNIFICANT_SIGNAL_MASK (~0x04000000)
+++
+++static const char* get_signal_handler_name(address handler,
+++ char* buf, int buflen) {
+++ int offset;
+++ bool found = os::dll_address_to_library_name(handler, buf, buflen, &offset);
+++ if (found) {
+++ // skip directory names
+++ const char *p1, *p2;
+++ p1 = buf;
+++ size_t len = strlen(os::file_separator());
+++ while ((p2 = strstr(p1, os::file_separator())) != NULL) p1 = p2 + len;
+++ jio_snprintf(buf, buflen, "%s+0x%x", p1, offset);
+++ } else {
+++ jio_snprintf(buf, buflen, PTR_FORMAT, handler);
+++ }
+++ return buf;
+++}
+++
+++static void print_signal_handler(outputStream* st, int sig,
+++ char* buf, size_t buflen) {
+++ struct sigaction sa;
+++
+++ sigaction(sig, NULL, &sa);
+++
+++ // See comment for SIGNIFICANT_SIGNAL_MASK define
+++ sa.sa_flags &= SIGNIFICANT_SIGNAL_MASK;
+++
+++ st->print("%s: ", os::exception_name(sig, buf, buflen));
+++
+++ address handler = (sa.sa_flags & SA_SIGINFO)
+++ ? CAST_FROM_FN_PTR(address, sa.sa_sigaction)
+++ : CAST_FROM_FN_PTR(address, sa.sa_handler);
+++
+++ if (handler == CAST_FROM_FN_PTR(address, SIG_DFL)) {
+++ st->print("SIG_DFL");
+++ } else if (handler == CAST_FROM_FN_PTR(address, SIG_IGN)) {
+++ st->print("SIG_IGN");
+++ } else {
+++ st->print("[%s]", get_signal_handler_name(handler, buf, buflen));
+++ }
+++
+++ st->print(", sa_mask[0]=" PTR32_FORMAT, *(uint32_t*)&sa.sa_mask);
+++
+++ address rh = VMError::get_resetted_sighandler(sig);
+++ // May be, handler was resetted by VMError?
+++ if(rh != NULL) {
+++ handler = rh;
+++ sa.sa_flags = VMError::get_resetted_sigflags(sig) & SIGNIFICANT_SIGNAL_MASK;
+++ }
+++
+++ st->print(", sa_flags=" PTR32_FORMAT, sa.sa_flags);
+++
+++ // Check: is it our handler?
+++ if(handler == CAST_FROM_FN_PTR(address, (sa_sigaction_t)signalHandler) ||
+++ handler == CAST_FROM_FN_PTR(address, (sa_sigaction_t)SR_handler)) {
+++ // It is our signal handler
+++ // check for flags, reset system-used one!
+++ if((int)sa.sa_flags != os::Linux::get_our_sigflags(sig)) {
+++ st->print(
+++ ", flags was changed from " PTR32_FORMAT ", consider using jsig library",
+++ os::Linux::get_our_sigflags(sig));
+++ }
+++ }
+++ st->cr();
+++}
+++
+++
+++#define DO_SIGNAL_CHECK(sig) \
+++ if (!sigismember(&check_signal_done, sig)) \
+++ os::Linux::check_signal_handler(sig)
+++
+++// This method is a periodic task to check for misbehaving JNI applications
+++// under CheckJNI, we can add any periodic checks here
+++
+++void os::run_periodic_checks() {
+++
+++ if (check_signals == false) return;
+++
+++ // SEGV and BUS if overridden could potentially prevent
+++ // generation of hs*.log in the event of a crash, debugging
+++ // such a case can be very challenging, so we absolutely
+++ // check the following for a good measure:
+++ DO_SIGNAL_CHECK(SIGSEGV);
+++ DO_SIGNAL_CHECK(SIGILL);
+++ DO_SIGNAL_CHECK(SIGFPE);
+++ DO_SIGNAL_CHECK(SIGBUS);
+++ DO_SIGNAL_CHECK(SIGPIPE);
+++ DO_SIGNAL_CHECK(SIGXFSZ);
+++
+++
+++ // ReduceSignalUsage allows the user to override these handlers
+++ // see comments at the very top and jvm_solaris.h
+++ if (!ReduceSignalUsage) {
+++ DO_SIGNAL_CHECK(SHUTDOWN1_SIGNAL);
+++ DO_SIGNAL_CHECK(SHUTDOWN2_SIGNAL);
+++ DO_SIGNAL_CHECK(SHUTDOWN3_SIGNAL);
+++ DO_SIGNAL_CHECK(BREAK_SIGNAL);
+++ }
+++
+++ DO_SIGNAL_CHECK(SR_signum);
+++ DO_SIGNAL_CHECK(INTERRUPT_SIGNAL);
+++}
+++
+++typedef int (*os_sigaction_t)(int, const struct sigaction *, struct sigaction *);
+++
+++static os_sigaction_t os_sigaction = NULL;
+++
+++void os::Linux::check_signal_handler(int sig) {
+++ char buf[O_BUFLEN];
+++ address jvmHandler = NULL;
+++
+++
+++ struct sigaction act;
+++ if (os_sigaction == NULL) {
+++ // only trust the default sigaction, in case it has been interposed
+++ os_sigaction = (os_sigaction_t)dlsym(RTLD_DEFAULT, "sigaction");
+++ if (os_sigaction == NULL) return;
+++ }
+++
+++ os_sigaction(sig, (struct sigaction*)NULL, &act);
+++
+++
+++ act.sa_flags &= SIGNIFICANT_SIGNAL_MASK;
+++
+++ address thisHandler = (act.sa_flags & SA_SIGINFO)
+++ ? CAST_FROM_FN_PTR(address, act.sa_sigaction)
+++ : CAST_FROM_FN_PTR(address, act.sa_handler) ;
+++
+++
+++ switch(sig) {
+++ case SIGSEGV:
+++ case SIGBUS:
+++ case SIGFPE:
+++ case SIGPIPE:
+++ case SIGILL:
+++ case SIGXFSZ:
+++ jvmHandler = CAST_FROM_FN_PTR(address, (sa_sigaction_t)signalHandler);
+++ break;
+++
+++ case SHUTDOWN1_SIGNAL:
+++ case SHUTDOWN2_SIGNAL:
+++ case SHUTDOWN3_SIGNAL:
+++ case BREAK_SIGNAL:
+++ jvmHandler = (address)user_handler();
+++ break;
+++
+++ case INTERRUPT_SIGNAL:
+++ jvmHandler = CAST_FROM_FN_PTR(address, SIG_DFL);
+++ break;
+++
+++ default:
+++ if (sig == SR_signum) {
+++ jvmHandler = CAST_FROM_FN_PTR(address, (sa_sigaction_t)SR_handler);
+++ } else {
+++ return;
+++ }
+++ break;
+++ }
+++
+++ if (thisHandler != jvmHandler) {
+++ tty->print("Warning: %s handler ", exception_name(sig, buf, O_BUFLEN));
+++ tty->print("expected:%s", get_signal_handler_name(jvmHandler, buf, O_BUFLEN));
+++ tty->print_cr(" found:%s", get_signal_handler_name(thisHandler, buf, O_BUFLEN));
+++ // No need to check this sig any longer
+++ sigaddset(&check_signal_done, sig);
+++ } else if(os::Linux::get_our_sigflags(sig) != 0 && (int)act.sa_flags != os::Linux::get_our_sigflags(sig)) {
+++ tty->print("Warning: %s handler flags ", exception_name(sig, buf, O_BUFLEN));
+++ tty->print("expected:" PTR32_FORMAT, os::Linux::get_our_sigflags(sig));
+++ tty->print_cr(" found:" PTR32_FORMAT, act.sa_flags);
+++ // No need to check this sig any longer
+++ sigaddset(&check_signal_done, sig);
+++ }
+++
+++ // Dump all the signal
+++ if (sigismember(&check_signal_done, sig)) {
+++ print_signal_handlers(tty, buf, O_BUFLEN);
+++ }
+++}
+++
+++extern void report_error(char* file_name, int line_no, char* title, char* format, ...);
+++
+++extern bool signal_name(int signo, char* buf, size_t len);
+++
+++const char* os::exception_name(int exception_code, char* buf, size_t size) {
+++ if (0 < exception_code && exception_code <= SIGRTMAX) {
+++ // signal
+++ if (!signal_name(exception_code, buf, size)) {
+++ jio_snprintf(buf, size, "SIG%d", exception_code);
+++ }
+++ return buf;
+++ } else {
+++ return NULL;
+++ }
+++}
+++
+++// this is called _before_ the most of global arguments have been parsed
+++void os::init(void) {
+++ char dummy; /* used to get a guess on initial stack address */
+++// first_hrtime = gethrtime();
+++
+++ // With LinuxThreads the JavaMain thread pid (primordial thread)
+++ // is different than the pid of the java launcher thread.
+++ // So, on Linux, the launcher thread pid is passed to the VM
+++ // via the sun.java.launcher.pid property.
+++ // Use this property instead of getpid() if it was correctly passed.
+++ // See bug 6351349.
+++ pid_t java_launcher_pid = (pid_t) Arguments::sun_java_launcher_pid();
+++
+++ _initial_pid = (java_launcher_pid > 0) ? java_launcher_pid : getpid();
+++
+++ clock_tics_per_sec = sysconf(_SC_CLK_TCK);
+++
+++ init_random(1234567);
+++
+++ ThreadCritical::initialize();
+++
+++ Linux::set_page_size(sysconf(_SC_PAGESIZE));
+++ if (Linux::page_size() == -1) {
+++ fatal(err_msg("os_linux.cpp: os::init: sysconf failed (%s)",
+++ strerror(errno)));
+++ }
+++ init_page_sizes((size_t) Linux::page_size());
+++
+++ Linux::initialize_system_info();
+++
+++ // main_thread points to the aboriginal thread
+++ Linux::_main_thread = pthread_self();
+++
+++ Linux::clock_init();
+++ initial_time_count = os::elapsed_counter();
+++ pthread_mutex_init(&dl_mutex, NULL);
+++
+++ // If the pagesize of the VM is greater than 8K determine the appropriate
+++ // number of initial guard pages. The user can change this with the
+++ // command line arguments, if needed.
+++ if (vm_page_size() > (int)Linux::vm_default_page_size()) {
+++ StackYellowPages = 1;
+++ StackRedPages = 1;
+++ StackShadowPages = round_to((StackShadowPages*Linux::vm_default_page_size()), vm_page_size()) / vm_page_size();
+++ }
+++}
+++
+++// To install functions for atexit system call
+++extern "C" {
+++ static void perfMemory_exit_helper() {
+++ perfMemory_exit();
+++ }
+++}
+++
+++// this is called _after_ the global arguments have been parsed
+++jint os::init_2(void)
+++{
+++ Linux::fast_thread_clock_init();
+++
+++ // Allocate a single page and mark it as readable for safepoint polling
+++ address polling_page = (address) ::mmap(NULL, Linux::page_size(), PROT_READ, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
+++ guarantee( polling_page != MAP_FAILED, "os::init_2: failed to allocate polling page" );
+++
+++ os::set_polling_page( polling_page );
+++
+++#ifndef PRODUCT
+++ if(Verbose && PrintMiscellaneous)
+++ tty->print("[SafePoint Polling address: " INTPTR_FORMAT "]\n", (intptr_t)polling_page);
+++#endif
+++
+++ if (!UseMembar) {
+++ address mem_serialize_page = (address) ::mmap(NULL, Linux::page_size(), PROT_READ | PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
+++ guarantee( mem_serialize_page != MAP_FAILED, "mmap Failed for memory serialize page");
+++ os::set_memory_serialize_page( mem_serialize_page );
+++
+++#ifndef PRODUCT
+++ if(Verbose && PrintMiscellaneous)
+++ tty->print("[Memory Serialize Page address: " INTPTR_FORMAT "]\n", (intptr_t)mem_serialize_page);
+++#endif
+++ }
+++
+++ os::large_page_init();
+++
+++ // initialize suspend/resume support - must do this before signal_sets_init()
+++ if (SR_initialize() != 0) {
+++ perror("SR_initialize failed");
+++ return JNI_ERR;
+++ }
+++
+++ Linux::signal_sets_init();
+++ Linux::install_signal_handlers();
+++
+++ // Check minimum allowable stack size for thread creation and to initialize
+++ // the java system classes, including StackOverflowError - depends on page
+++ // size. Add a page for compiler2 recursion in main thread.
+++ // Add in 2*BytesPerWord times page size to account for VM stack during
+++ // class initialization depending on 32 or 64 bit VM.
+++ os::Linux::min_stack_allowed = MAX2(os::Linux::min_stack_allowed,
+++ (size_t)(StackYellowPages+StackRedPages+StackShadowPages) * Linux::page_size() +
+++ (2*BytesPerWord COMPILER2_PRESENT(+1)) * Linux::vm_default_page_size());
+++
+++ size_t threadStackSizeInBytes = ThreadStackSize * K;
+++ if (threadStackSizeInBytes != 0 &&
+++ threadStackSizeInBytes < os::Linux::min_stack_allowed) {
+++ tty->print_cr("\nThe stack size specified is too small, "
+++ "Specify at least %dk",
+++ os::Linux::min_stack_allowed/ K);
+++ return JNI_ERR;
+++ }
+++
+++ // Make the stack size a multiple of the page size so that
+++ // the yellow/red zones can be guarded.
+++ JavaThread::set_stack_size_at_create(round_to(threadStackSizeInBytes,
+++ vm_page_size()));
+++
+++ Linux::capture_initial_stack(JavaThread::stack_size_at_create());
+++
+++ Linux::libpthread_init();
+++ if (PrintMiscellaneous && (Verbose || WizardMode)) {
+++ tty->print_cr("[HotSpot is running with %s, %s(%s)]\n",
+++ Linux::glibc_version(), Linux::libpthread_version(),
+++ Linux::is_floating_stack() ? "floating stack" : "fixed stack");
+++ }
+++
+++ if (UseNUMA) {
+++ if (!Linux::libnuma_init()) {
+++ UseNUMA = false;
+++ } else {
+++ if ((Linux::numa_max_node() < 1)) {
+++ // There's only one node(they start from 0), disable NUMA.
+++ UseNUMA = false;
+++ }
+++ }
+++ // With SHM large pages we cannot uncommit a page, so there's not way
+++ // we can make the adaptive lgrp chunk resizing work. If the user specified
+++ // both UseNUMA and UseLargePages (or UseSHM) on the command line - warn and
+++ // disable adaptive resizing.
+++ if (UseNUMA && UseLargePages && UseSHM) {
+++ if (!FLAG_IS_DEFAULT(UseNUMA)) {
+++ if (FLAG_IS_DEFAULT(UseLargePages) && FLAG_IS_DEFAULT(UseSHM)) {
+++ UseLargePages = false;
+++ } else {
+++ warning("UseNUMA is not fully compatible with SHM large pages, disabling adaptive resizing");
+++ UseAdaptiveSizePolicy = false;
+++ UseAdaptiveNUMAChunkSizing = false;
+++ }
+++ } else {
+++ UseNUMA = false;
+++ }
+++ }
+++ if (!UseNUMA && ForceNUMA) {
+++ UseNUMA = true;
+++ }
+++ }
+++
+++ if (MaxFDLimit) {
+++ // set the number of file descriptors to max. print out error
+++ // if getrlimit/setrlimit fails but continue regardless.
+++ struct rlimit nbr_files;
+++ int status = getrlimit(RLIMIT_NOFILE, &nbr_files);
+++ if (status != 0) {
+++ if (PrintMiscellaneous && (Verbose || WizardMode))
+++ perror("os::init_2 getrlimit failed");
+++ } else {
+++ nbr_files.rlim_cur = nbr_files.rlim_max;
+++ status = setrlimit(RLIMIT_NOFILE, &nbr_files);
+++ if (status != 0) {
+++ if (PrintMiscellaneous && (Verbose || WizardMode))
+++ perror("os::init_2 setrlimit failed");
+++ }
+++ }
+++ }
+++
+++ // Initialize lock used to serialize thread creation (see os::create_thread)
+++ Linux::set_createThread_lock(new Mutex(Mutex::leaf, "createThread_lock", false));
+++
+++ // at-exit methods are called in the reverse order of their registration.
+++ // atexit functions are called on return from main or as a result of a
+++ // call to exit(3C). There can be only 32 of these functions registered
+++ // and atexit() does not set errno.
+++
+++ if (PerfAllowAtExitRegistration) {
+++ // only register atexit functions if PerfAllowAtExitRegistration is set.
+++ // atexit functions can be delayed until process exit time, which
+++ // can be problematic for embedded VM situations. Embedded VMs should
+++ // call DestroyJavaVM() to assure that VM resources are released.
+++
+++ // note: perfMemory_exit_helper atexit function may be removed in
+++ // the future if the appropriate cleanup code can be added to the
+++ // VM_Exit VMOperation's doit method.
+++ if (atexit(perfMemory_exit_helper) != 0) {
+++ warning("os::init2 atexit(perfMemory_exit_helper) failed");
+++ }
+++ }
+++
+++ // initialize thread priority policy
+++ prio_init();
+++
+++ return JNI_OK;
+++}
+++
+++// this is called at the end of vm_initialization
+++void os::init_3(void)
+++{
+++#ifdef JAVASE_EMBEDDED
+++ // Start the MemNotifyThread
+++ if (LowMemoryProtection) {
+++ MemNotifyThread::start();
+++ }
+++ return;
+++#endif
+++}
+++
+++// Mark the polling page as unreadable
+++void os::make_polling_page_unreadable(void) {
+++ if( !guard_memory((char*)_polling_page, Linux::page_size()) )
+++ fatal("Could not disable polling page");
+++};
+++
+++// Mark the polling page as readable
+++void os::make_polling_page_readable(void) {
+++ if( !linux_mprotect((char *)_polling_page, Linux::page_size(), PROT_READ)) {
+++ fatal("Could not enable polling page");
+++ }
+++};
+++
+++int os::active_processor_count() {
+++ // Linux doesn't yet have a (official) notion of processor sets,
+++ // so just return the number of online processors.
+++ int online_cpus = ::sysconf(_SC_NPROCESSORS_ONLN);
+++ assert(online_cpus > 0 && online_cpus <= processor_count(), "sanity check");
+++ return online_cpus;
+++}
+++
+++void os::set_native_thread_name(const char *name) {
+++ // Not yet implemented.
+++ return;
+++}
+++
+++bool os::distribute_processes(uint length, uint* distribution) {
+++ // Not yet implemented.
+++ return false;
+++}
+++
+++bool os::bind_to_processor(uint processor_id) {
+++ // Not yet implemented.
+++ return false;
+++}
+++
+++///
+++
+++void os::SuspendedThreadTask::internal_do_task() {
+++ if (do_suspend(_thread->osthread())) {
+++ SuspendedThreadTaskContext context(_thread, _thread->osthread()->ucontext());
+++ do_task(context);
+++ do_resume(_thread->osthread());
+++ }
+++}
+++
+++class PcFetcher : public os::SuspendedThreadTask {
+++public:
+++ PcFetcher(Thread* thread) : os::SuspendedThreadTask(thread) {}
+++ ExtendedPC result();
+++protected:
+++ void do_task(const os::SuspendedThreadTaskContext& context);
+++private:
+++ ExtendedPC _epc;
+++};
+++
+++ExtendedPC PcFetcher::result() {
+++ guarantee(is_done(), "task is not done yet.");
+++ return _epc;
+++}
+++
+++void PcFetcher::do_task(const os::SuspendedThreadTaskContext& context) {
+++ Thread* thread = context.thread();
+++ OSThread* osthread = thread->osthread();
+++ if (osthread->ucontext() != NULL) {
+++ _epc = os::Linux::ucontext_get_pc((ucontext_t *) context.ucontext());
+++ } else {
+++ // NULL context is unexpected, double-check this is the VMThread
+++ guarantee(thread->is_VM_thread(), "can only be called for VMThread");
+++ }
+++}
+++
+++// Suspends the target using the signal mechanism and then grabs the PC before
+++// resuming the target. Used by the flat-profiler only
+++ExtendedPC os::get_thread_pc(Thread* thread) {
+++ // Make sure that it is called by the watcher for the VMThread
+++ assert(Thread::current()->is_Watcher_thread(), "Must be watcher");
+++ assert(thread->is_VM_thread(), "Can only be called for VMThread");
+++
+++ PcFetcher fetcher(thread);
+++ fetcher.run();
+++ return fetcher.result();
+++}
+++
+++int os::Linux::safe_cond_timedwait(pthread_cond_t *_cond, pthread_mutex_t *_mutex, const struct timespec *_abstime)
+++{
+++ if (is_NPTL()) {
+++ return pthread_cond_timedwait(_cond, _mutex, _abstime);
+++ } else {
+++#ifndef IA64
+++ // 6292965: LinuxThreads pthread_cond_timedwait() resets FPU control
+++ // word back to default 64bit precision if condvar is signaled. Java
+++ // wants 53bit precision. Save and restore current value.
+++ int fpu = get_fpu_control_word();
+++#endif // IA64
+++ int status = pthread_cond_timedwait(_cond, _mutex, _abstime);
+++#ifndef IA64
+++ set_fpu_control_word(fpu);
+++#endif // IA64
+++ return status;
+++ }
+++}
+++
+++////////////////////////////////////////////////////////////////////////////////
+++// debug support
+++
+++static address same_page(address x, address y) {
+++ int page_bits = -os::vm_page_size();
+++ if ((intptr_t(x) & page_bits) == (intptr_t(y) & page_bits))
+++ return x;
+++ else if (x > y)
+++ return (address)(intptr_t(y) | ~page_bits) + 1;
+++ else
+++ return (address)(intptr_t(y) & page_bits);
+++}
+++
+++bool os::find(address addr, outputStream* st) {
+++ Dl_info dlinfo;
+++ memset(&dlinfo, 0, sizeof(dlinfo));
+++ if (dladdr(addr, &dlinfo) != 0) {
+++ st->print(PTR_FORMAT ": ", addr);
+++ if (dlinfo.dli_sname != NULL && dlinfo.dli_saddr != NULL) {
+++ st->print("%s+%#x", dlinfo.dli_sname,
+++ addr - (intptr_t)dlinfo.dli_saddr);
+++ } else if (dlinfo.dli_fbase != NULL) {
+++ st->print("<offset %#x>", addr - (intptr_t)dlinfo.dli_fbase);
+++ } else {
+++ st->print("<absolute address>");
+++ }
+++ if (dlinfo.dli_fname != NULL) {
+++ st->print(" in %s", dlinfo.dli_fname);
+++ }
+++ if (dlinfo.dli_fbase != NULL) {
+++ st->print(" at " PTR_FORMAT, dlinfo.dli_fbase);
+++ }
+++ st->cr();
+++
+++ if (Verbose) {
+++ // decode some bytes around the PC
+++ address begin = same_page(addr-40, addr);
+++ address end = same_page(addr+40, addr);
+++ address lowest = (address) dlinfo.dli_sname;
+++ if (!lowest) lowest = (address) dlinfo.dli_fbase;
+++ if (begin < lowest) begin = lowest;
+++ Dl_info dlinfo2;
+++ if (dladdr(end, &dlinfo2) != 0 && dlinfo2.dli_saddr != dlinfo.dli_saddr
+++ && end > dlinfo2.dli_saddr && dlinfo2.dli_saddr > begin)
+++ end = (address) dlinfo2.dli_saddr;
+++ Disassembler::decode(begin, end, st);
+++ }
+++ return true;
+++ }
+++ return false;
+++}
+++
+++////////////////////////////////////////////////////////////////////////////////
+++// misc
+++
+++// This does not do anything on Linux. This is basically a hook for being
+++// able to use structured exception handling (thread-local exception filters)
+++// on, e.g., Win32.
+++void
+++os::os_exception_wrapper(java_call_t f, JavaValue* value, methodHandle* method,
+++ JavaCallArguments* args, Thread* thread) {
+++ f(value, method, args, thread);
+++}
+++
+++void os::print_statistics() {
+++}
+++
+++int os::message_box(const char* title, const char* message) {
+++ int i;
+++ fdStream err(defaultStream::error_fd());
+++ for (i = 0; i < 78; i++) err.print_raw("=");
+++ err.cr();
+++ err.print_raw_cr(title);
+++ for (i = 0; i < 78; i++) err.print_raw("-");
+++ err.cr();
+++ err.print_raw_cr(message);
+++ for (i = 0; i < 78; i++) err.print_raw("=");
+++ err.cr();
+++
+++ char buf[16];
+++ // Prevent process from exiting upon "read error" without consuming all CPU
+++ while (::read(0, buf, sizeof(buf)) <= 0) { ::sleep(100); }
+++
+++ return buf[0] == 'y' || buf[0] == 'Y';
+++}
+++
+++int os::stat(const char *path, struct stat *sbuf) {
+++ char pathbuf[MAX_PATH];
+++ if (strlen(path) > MAX_PATH - 1) {
+++ errno = ENAMETOOLONG;
+++ return -1;
+++ }
+++ os::native_path(strcpy(pathbuf, path));
+++ return ::stat(pathbuf, sbuf);
+++}
+++
+++bool os::check_heap(bool force) {
+++ return true;
+++}
+++
+++int local_vsnprintf(char* buf, size_t count, const char* format, va_list args) {
+++ return ::vsnprintf(buf, count, format, args);
+++}
+++
+++// Is a (classpath) directory empty?
+++bool os::dir_is_empty(const char* path) {
+++ DIR *dir = NULL;
+++ struct dirent *ptr;
+++
+++ dir = opendir(path);
+++ if (dir == NULL) return true;
+++
+++ /* Scan the directory */
+++ bool result = true;
+++ char buf[sizeof(struct dirent) + MAX_PATH];
+++ while (result && (ptr = ::readdir(dir)) != NULL) {
+++ if (strcmp(ptr->d_name, ".") != 0 && strcmp(ptr->d_name, "..") != 0) {
+++ result = false;
+++ }
+++ }
+++ closedir(dir);
+++ return result;
+++}
+++
+++// This code originates from JDK's sysOpen and open64_w
+++// from src/solaris/hpi/src/system_md.c
+++
+++#ifndef O_DELETE
+++#define O_DELETE 0x10000
+++#endif
+++
+++// Open a file. Unlink the file immediately after open returns
+++// if the specified oflag has the O_DELETE flag set.
+++// O_DELETE is used only in j2se/src/share/native/java/util/zip/ZipFile.c
+++
+++int os::open(const char *path, int oflag, int mode) {
+++
+++ if (strlen(path) > MAX_PATH - 1) {
+++ errno = ENAMETOOLONG;
+++ return -1;
+++ }
+++ int fd;
+++ int o_delete = (oflag & O_DELETE);
+++ oflag = oflag & ~O_DELETE;
+++
+++ fd = ::open64(path, oflag, mode);
+++ if (fd == -1) return -1;
+++
+++ //If the open succeeded, the file might still be a directory
+++ {
+++ struct stat64 buf64;
+++ int ret = ::fstat64(fd, &buf64);
+++ int st_mode = buf64.st_mode;
+++
+++ if (ret != -1) {
+++ if ((st_mode & S_IFMT) == S_IFDIR) {
+++ errno = EISDIR;
+++ ::close(fd);
+++ return -1;
+++ }
+++ } else {
+++ ::close(fd);
+++ return -1;
+++ }
+++ }
+++
+++ /*
+++ * All file descriptors that are opened in the JVM and not
+++ * specifically destined for a subprocess should have the
+++ * close-on-exec flag set. If we don't set it, then careless 3rd
+++ * party native code might fork and exec without closing all
+++ * appropriate file descriptors (e.g. as we do in closeDescriptors in
+++ * UNIXProcess.c), and this in turn might:
+++ *
+++ * - cause end-of-file to fail to be detected on some file
+++ * descriptors, resulting in mysterious hangs, or
+++ *
+++ * - might cause an fopen in the subprocess to fail on a system
+++ * suffering from bug 1085341.
+++ *
+++ * (Yes, the default setting of the close-on-exec flag is a Unix
+++ * design flaw)
+++ *
+++ * See:
+++ * 1085341: 32-bit stdio routines should support file descriptors >255
+++ * 4843136: (process) pipe file descriptor from Runtime.exec not being closed
+++ * 6339493: (process) Runtime.exec does not close all file descriptors on Solaris 9
+++ */
+++#ifdef FD_CLOEXEC
+++ {
+++ int flags = ::fcntl(fd, F_GETFD);
+++ if (flags != -1)
+++ ::fcntl(fd, F_SETFD, flags | FD_CLOEXEC);
+++ }
+++#endif
+++
+++ if (o_delete != 0) {
+++ ::unlink(path);
+++ }
+++ return fd;
+++}
+++
+++
+++// create binary file, rewriting existing file if required
+++int os::create_binary_file(const char* path, bool rewrite_existing) {
+++ int oflags = O_WRONLY | O_CREAT;
+++ if (!rewrite_existing) {
+++ oflags |= O_EXCL;
+++ }
+++ return ::open64(path, oflags, S_IREAD | S_IWRITE);
+++}
+++
+++// return current position of file pointer
+++jlong os::current_file_offset(int fd) {
+++ return (jlong)::lseek64(fd, (off64_t)0, SEEK_CUR);
+++}
+++
+++// move file pointer to the specified offset
+++jlong os::seek_to_file_offset(int fd, jlong offset) {
+++ return (jlong)::lseek64(fd, (off64_t)offset, SEEK_SET);
+++}
+++
+++// This code originates from JDK's sysAvailable
+++// from src/solaris/hpi/src/native_threads/src/sys_api_td.c
+++
+++int os::available(int fd, jlong *bytes) {
+++ jlong cur, end;
+++ int mode;
+++ struct stat64 buf64;
+++
+++ if (::fstat64(fd, &buf64) >= 0) {
+++ mode = buf64.st_mode;
+++ if (S_ISCHR(mode) || S_ISFIFO(mode) || S_ISSOCK(mode)) {
+++ /*
+++ * XXX: is the following call interruptible? If so, this might
+++ * need to go through the INTERRUPT_IO() wrapper as for other
+++ * blocking, interruptible calls in this file.
+++ */
+++ int n;
+++ if (::ioctl(fd, FIONREAD, &n) >= 0) {
+++ *bytes = n;
+++ return 1;
+++ }
+++ }
+++ }
+++ if ((cur = ::lseek64(fd, 0L, SEEK_CUR)) == -1) {
+++ return 0;
+++ } else if ((end = ::lseek64(fd, 0L, SEEK_END)) == -1) {
+++ return 0;
+++ } else if (::lseek64(fd, cur, SEEK_SET) == -1) {
+++ return 0;
+++ }
+++ *bytes = end - cur;
+++ return 1;
+++}
+++
+++int os::socket_available(int fd, jint *pbytes) {
+++ // Linux doc says EINTR not returned, unlike Solaris
+++ int ret = ::ioctl(fd, FIONREAD, pbytes);
+++
+++ //%% note ioctl can return 0 when successful, JVM_SocketAvailable
+++ // is expected to return 0 on failure and 1 on success to the jdk.
+++ return (ret < 0) ? 0 : 1;
+++}
+++
+++// Map a block of memory.
+++char* os::pd_map_memory(int fd, const char* file_name, size_t file_offset,
+++ char *addr, size_t bytes, bool read_only,
+++ bool allow_exec) {
+++ int prot;
+++ int flags = MAP_PRIVATE;
+++
+++ if (read_only) {
+++ prot = PROT_READ;
+++ } else {
+++ prot = PROT_READ | PROT_WRITE;
+++ }
+++
+++ if (allow_exec) {
+++ prot |= PROT_EXEC;
+++ }
+++
+++ if (addr != NULL) {
+++ flags |= MAP_FIXED;
+++ }
+++
+++ char* mapped_address = (char*)mmap(addr, (size_t)bytes, prot, flags,
+++ fd, file_offset);
+++ if (mapped_address == MAP_FAILED) {
+++ return NULL;
+++ }
+++ return mapped_address;
+++}
+++
+++
+++// Remap a block of memory.
+++char* os::pd_remap_memory(int fd, const char* file_name, size_t file_offset,
+++ char *addr, size_t bytes, bool read_only,
+++ bool allow_exec) {
+++ // same as map_memory() on this OS
+++ return os::map_memory(fd, file_name, file_offset, addr, bytes, read_only,
+++ allow_exec);
+++}
+++
+++
+++// Unmap a block of memory.
+++bool os::pd_unmap_memory(char* addr, size_t bytes) {
+++ return munmap(addr, bytes) == 0;
+++}
+++
+++static jlong slow_thread_cpu_time(Thread *thread, bool user_sys_cpu_time);
+++
+++static clockid_t thread_cpu_clockid(Thread* thread) {
+++ pthread_t tid = thread->osthread()->pthread_id();
+++ clockid_t clockid;
+++
+++ // Get thread clockid
+++ int rc = os::Linux::pthread_getcpuclockid(tid, &clockid);
+++ assert(rc == 0, "pthread_getcpuclockid is expected to return 0 code");
+++ return clockid;
+++}
+++
+++// current_thread_cpu_time(bool) and thread_cpu_time(Thread*, bool)
+++// are used by JVM M&M and JVMTI to get user+sys or user CPU time
+++// of a thread.
+++//
+++// current_thread_cpu_time() and thread_cpu_time(Thread*) returns
+++// the fast estimate available on the platform.
+++
+++jlong os::current_thread_cpu_time() {
+++ if (os::Linux::supports_fast_thread_cpu_time()) {
+++ return os::Linux::fast_thread_cpu_time(CLOCK_THREAD_CPUTIME_ID);
+++ } else {
+++ // return user + sys since the cost is the same
+++ return slow_thread_cpu_time(Thread::current(), true /* user + sys */);
+++ }
+++}
+++
+++jlong os::thread_cpu_time(Thread* thread) {
+++ // consistent with what current_thread_cpu_time() returns
+++ if (os::Linux::supports_fast_thread_cpu_time()) {
+++ return os::Linux::fast_thread_cpu_time(thread_cpu_clockid(thread));
+++ } else {
+++ return slow_thread_cpu_time(thread, true /* user + sys */);
+++ }
+++}
+++
+++jlong os::current_thread_cpu_time(bool user_sys_cpu_time) {
+++ if (user_sys_cpu_time && os::Linux::supports_fast_thread_cpu_time()) {
+++ return os::Linux::fast_thread_cpu_time(CLOCK_THREAD_CPUTIME_ID);
+++ } else {
+++ return slow_thread_cpu_time(Thread::current(), user_sys_cpu_time);
+++ }
+++}
+++
+++jlong os::thread_cpu_time(Thread *thread, bool user_sys_cpu_time) {
+++ if (user_sys_cpu_time && os::Linux::supports_fast_thread_cpu_time()) {
+++ return os::Linux::fast_thread_cpu_time(thread_cpu_clockid(thread));
+++ } else {
+++ return slow_thread_cpu_time(thread, user_sys_cpu_time);
+++ }
+++}
+++
+++//
+++// -1 on error.
+++//
+++
+++static jlong slow_thread_cpu_time(Thread *thread, bool user_sys_cpu_time) {
+++ static bool proc_pid_cpu_avail = true;
+++ static bool proc_task_unchecked = true;
+++ static const char *proc_stat_path = "/proc/%d/stat";
+++ pid_t tid = thread->osthread()->thread_id();
+++ int i;
+++ char *s;
+++ char stat[2048];
+++ int statlen;
+++ char proc_name[64];
+++ int count;
+++ long sys_time, user_time;
+++ char string[64];
+++ char cdummy;
+++ int idummy;
+++ long ldummy;
+++ FILE *fp;
+++
+++ // We first try accessing /proc/<pid>/cpu since this is faster to
+++ // process. If this file is not present (linux kernels 2.5 and above)
+++ // then we open /proc/<pid>/stat.
+++ if ( proc_pid_cpu_avail ) {
+++ sprintf(proc_name, "/proc/%d/cpu", tid);
+++ fp = fopen(proc_name, "r");
+++ if ( fp != NULL ) {
+++ count = fscanf( fp, "%s %lu %lu\n", string, &user_time, &sys_time);
+++ fclose(fp);
+++ if ( count != 3 ) return -1;
+++
+++ if (user_sys_cpu_time) {
+++ return ((jlong)sys_time + (jlong)user_time) * (1000000000 / clock_tics_per_sec);
+++ } else {
+++ return (jlong)user_time * (1000000000 / clock_tics_per_sec);
+++ }
+++ }
+++ else proc_pid_cpu_avail = false;
+++ }
+++
+++ // The /proc/<tid>/stat aggregates per-process usage on
+++ // new Linux kernels 2.6+ where NPTL is supported.
+++ // The /proc/self/task/<tid>/stat still has the per-thread usage.
+++ // See bug 6328462.
+++ // There can be no directory /proc/self/task on kernels 2.4 with NPTL
+++ // and possibly in some other cases, so we check its availability.
+++ if (proc_task_unchecked && os::Linux::is_NPTL()) {
+++ // This is executed only once
+++ proc_task_unchecked = false;
+++ fp = fopen("/proc/self/task", "r");
+++ if (fp != NULL) {
+++ proc_stat_path = "/proc/self/task/%d/stat";
+++ fclose(fp);
+++ }
+++ }
+++
+++ sprintf(proc_name, proc_stat_path, tid);
+++ fp = fopen(proc_name, "r");
+++ if ( fp == NULL ) return -1;
+++ statlen = fread(stat, 1, 2047, fp);
+++ stat[statlen] = '\0';
+++ fclose(fp);
+++
+++ // Skip pid and the command string. Note that we could be dealing with
+++ // weird command names, e.g. user could decide to rename java launcher
+++ // to "java 1.4.2 :)", then the stat file would look like
+++ // 1234 (java 1.4.2 :)) R ... ...
+++ // We don't really need to know the command string, just find the last
+++ // occurrence of ")" and then start parsing from there. See bug 4726580.
+++ s = strrchr(stat, ')');
+++ i = 0;
+++ if (s == NULL ) return -1;
+++
+++ // Skip blank chars
+++ do s++; while (isspace(*s));
+++
+++ count = sscanf(s,"%c %d %d %d %d %d %lu %lu %lu %lu %lu %lu %lu",
+++ &cdummy, &idummy, &idummy, &idummy, &idummy, &idummy,
+++ &ldummy, &ldummy, &ldummy, &ldummy, &ldummy,
+++ &user_time, &sys_time);
+++ if ( count != 13 ) return -1;
+++ if (user_sys_cpu_time) {
+++ return ((jlong)sys_time + (jlong)user_time) * (1000000000 / clock_tics_per_sec);
+++ } else {
+++ return (jlong)user_time * (1000000000 / clock_tics_per_sec);
+++ }
+++}
+++
+++void os::current_thread_cpu_time_info(jvmtiTimerInfo *info_ptr) {
+++ info_ptr->max_value = ALL_64_BITS; // will not wrap in less than 64 bits
+++ info_ptr->may_skip_backward = false; // elapsed time not wall time
+++ info_ptr->may_skip_forward = false; // elapsed time not wall time
+++ info_ptr->kind = JVMTI_TIMER_TOTAL_CPU; // user+system time is returned
+++}
+++
+++void os::thread_cpu_time_info(jvmtiTimerInfo *info_ptr) {
+++ info_ptr->max_value = ALL_64_BITS; // will not wrap in less than 64 bits
+++ info_ptr->may_skip_backward = false; // elapsed time not wall time
+++ info_ptr->may_skip_forward = false; // elapsed time not wall time
+++ info_ptr->kind = JVMTI_TIMER_TOTAL_CPU; // user+system time is returned
+++}
+++
+++bool os::is_thread_cpu_time_supported() {
+++ return true;
+++}
+++
+++// System loadavg support. Returns -1 if load average cannot be obtained.
+++// Linux doesn't yet have a (official) notion of processor sets,
+++// so just return the system wide load average.
+++int os::loadavg(double loadavg[], int nelem) {
+++ return ::getloadavg(loadavg, nelem);
+++}
+++
+++void os::pause() {
+++ char filename[MAX_PATH];
+++ if (PauseAtStartupFile && PauseAtStartupFile[0]) {
+++ jio_snprintf(filename, MAX_PATH, PauseAtStartupFile);
+++ } else {
+++ jio_snprintf(filename, MAX_PATH, "./vm.paused.%d", current_process_id());
+++ }
+++
+++ int fd = ::open(filename, O_WRONLY | O_CREAT | O_TRUNC, 0666);
+++ if (fd != -1) {
+++ struct stat buf;
+++ ::close(fd);
+++ while (::stat(filename, &buf) == 0) {
+++ (void)::poll(NULL, 0, 100);
+++ }
+++ } else {
+++ jio_fprintf(stderr,
+++ "Could not open pause file '%s', continuing immediately.\n", filename);
+++ }
+++}
+++
+++
+++// Refer to the comments in os_solaris.cpp park-unpark.
+++//
+++// Beware -- Some versions of NPTL embody a flaw where pthread_cond_timedwait() can
+++// hang indefinitely. For instance NPTL 0.60 on 2.4.21-4ELsmp is vulnerable.
+++// For specifics regarding the bug see GLIBC BUGID 261237 :
+++// http://www.mail-archive.com/debian-glibc@lists.debian.org/msg10837.html.
+++// Briefly, pthread_cond_timedwait() calls with an expiry time that's not in the future
+++// will either hang or corrupt the condvar, resulting in subsequent hangs if the condvar
+++// is used. (The simple C test-case provided in the GLIBC bug report manifests the
+++// hang). The JVM is vulernable via sleep(), Object.wait(timo), LockSupport.parkNanos()
+++// and monitorenter when we're using 1-0 locking. All those operations may result in
+++// calls to pthread_cond_timedwait(). Using LD_ASSUME_KERNEL to use an older version
+++// of libpthread avoids the problem, but isn't practical.
+++//
+++// Possible remedies:
+++//
+++// 1. Establish a minimum relative wait time. 50 to 100 msecs seems to work.
+++// This is palliative and probabilistic, however. If the thread is preempted
+++// between the call to compute_abstime() and pthread_cond_timedwait(), more
+++// than the minimum period may have passed, and the abstime may be stale (in the
+++// past) resultin in a hang. Using this technique reduces the odds of a hang
+++// but the JVM is still vulnerable, particularly on heavily loaded systems.
+++//
+++// 2. Modify park-unpark to use per-thread (per ParkEvent) pipe-pairs instead
+++// of the usual flag-condvar-mutex idiom. The write side of the pipe is set
+++// NDELAY. unpark() reduces to write(), park() reduces to read() and park(timo)
+++// reduces to poll()+read(). This works well, but consumes 2 FDs per extant
+++// thread.
+++//
+++// 3. Embargo pthread_cond_timedwait() and implement a native "chron" thread
+++// that manages timeouts. We'd emulate pthread_cond_timedwait() by enqueuing
+++// a timeout request to the chron thread and then blocking via pthread_cond_wait().
+++// This also works well. In fact it avoids kernel-level scalability impediments
+++// on certain platforms that don't handle lots of active pthread_cond_timedwait()
+++// timers in a graceful fashion.
+++//
+++// 4. When the abstime value is in the past it appears that control returns
+++// correctly from pthread_cond_timedwait(), but the condvar is left corrupt.
+++// Subsequent timedwait/wait calls may hang indefinitely. Given that, we
+++// can avoid the problem by reinitializing the condvar -- by cond_destroy()
+++// followed by cond_init() -- after all calls to pthread_cond_timedwait().
+++// It may be possible to avoid reinitialization by checking the return
+++// value from pthread_cond_timedwait(). In addition to reinitializing the
+++// condvar we must establish the invariant that cond_signal() is only called
+++// within critical sections protected by the adjunct mutex. This prevents
+++// cond_signal() from "seeing" a condvar that's in the midst of being
+++// reinitialized or that is corrupt. Sadly, this invariant obviates the
+++// desirable signal-after-unlock optimization that avoids futile context switching.
+++//
+++// I'm also concerned that some versions of NTPL might allocate an auxilliary
+++// structure when a condvar is used or initialized. cond_destroy() would
+++// release the helper structure. Our reinitialize-after-timedwait fix
+++// put excessive stress on malloc/free and locks protecting the c-heap.
+++//
+++// We currently use (4). See the WorkAroundNTPLTimedWaitHang flag.
+++// It may be possible to refine (4) by checking the kernel and NTPL verisons
+++// and only enabling the work-around for vulnerable environments.
+++
+++// utility to compute the abstime argument to timedwait:
+++// millis is the relative timeout time
+++// abstime will be the absolute timeout time
+++// TODO: replace compute_abstime() with unpackTime()
+++
+++static struct timespec* compute_abstime(timespec* abstime, jlong millis) {
+++ if (millis < 0) millis = 0;
+++ struct timeval now;
+++ int status = gettimeofday(&now, NULL);
+++ assert(status == 0, "gettimeofday");
+++ jlong seconds = millis / 1000;
+++ millis %= 1000;
+++ if (seconds > 50000000) { // see man cond_timedwait(3T)
+++ seconds = 50000000;
+++ }
+++ abstime->tv_sec = now.tv_sec + seconds;
+++ long usec = now.tv_usec + millis * 1000;
+++ if (usec >= 1000000) {
+++ abstime->tv_sec += 1;
+++ usec -= 1000000;
+++ }
+++ abstime->tv_nsec = usec * 1000;
+++ return abstime;
+++}
+++
+++
+++// Test-and-clear _Event, always leaves _Event set to 0, returns immediately.
+++// Conceptually TryPark() should be equivalent to park(0).
+++
+++int os::PlatformEvent::TryPark() {
+++ for (;;) {
+++ const int v = _Event ;
+++ guarantee ((v == 0) || (v == 1), "invariant") ;
+++ if (Atomic::cmpxchg (0, &_Event, v) == v) return v ;
+++ }
+++}
+++
+++void os::PlatformEvent::park() { // AKA "down()"
+++ // Invariant: Only the thread associated with the Event/PlatformEvent
+++ // may call park().
+++ // TODO: assert that _Assoc != NULL or _Assoc == Self
+++ int v ;
+++ for (;;) {
+++ v = _Event ;
+++ if (Atomic::cmpxchg (v-1, &_Event, v) == v) break ;
+++ }
+++ guarantee (v >= 0, "invariant") ;
+++ if (v == 0) {
+++ // Do this the hard way by blocking ...
+++ int status = pthread_mutex_lock(_mutex);
+++ assert_status(status == 0, status, "mutex_lock");
+++ guarantee (_nParked == 0, "invariant") ;
+++ ++ _nParked ;
+++ while (_Event < 0) {
+++ status = pthread_cond_wait(_cond, _mutex);
+++ // for some reason, under 2.7 lwp_cond_wait() may return ETIME ...
+++ // Treat this the same as if the wait was interrupted
+++ if (status == ETIME) { status = EINTR; }
+++ assert_status(status == 0 || status == EINTR, status, "cond_wait");
+++ }
+++ -- _nParked ;
+++
+++ _Event = 0 ;
+++ status = pthread_mutex_unlock(_mutex);
+++ assert_status(status == 0, status, "mutex_unlock");
+++ // Paranoia to ensure our locked and lock-free paths interact
+++ // correctly with each other.
+++ OrderAccess::fence();
+++ }
+++ guarantee (_Event >= 0, "invariant") ;
+++}
+++
+++int os::PlatformEvent::park(jlong millis) {
+++ guarantee (_nParked == 0, "invariant") ;
+++
+++ int v ;
+++ for (;;) {
+++ v = _Event ;
+++ if (Atomic::cmpxchg (v-1, &_Event, v) == v) break ;
+++ }
+++ guarantee (v >= 0, "invariant") ;
+++ if (v != 0) return OS_OK ;
+++
+++ // We do this the hard way, by blocking the thread.
+++ // Consider enforcing a minimum timeout value.
+++ struct timespec abst;
+++ compute_abstime(&abst, millis);
+++
+++ int ret = OS_TIMEOUT;
+++ int status = pthread_mutex_lock(_mutex);
+++ assert_status(status == 0, status, "mutex_lock");
+++ guarantee (_nParked == 0, "invariant") ;
+++ ++_nParked ;
+++
+++ // Object.wait(timo) will return because of
+++ // (a) notification
+++ // (b) timeout
+++ // (c) thread.interrupt
+++ //
+++ // Thread.interrupt and object.notify{All} both call Event::set.
+++ // That is, we treat thread.interrupt as a special case of notification.
+++ // The underlying Solaris implementation, cond_timedwait, admits
+++ // spurious/premature wakeups, but the JLS/JVM spec prevents the
+++ // JVM from making those visible to Java code. As such, we must
+++ // filter out spurious wakeups. We assume all ETIME returns are valid.
+++ //
+++ // TODO: properly differentiate simultaneous notify+interrupt.
+++ // In that case, we should propagate the notify to another waiter.
+++
+++ while (_Event < 0) {
+++ status = os::Linux::safe_cond_timedwait(_cond, _mutex, &abst);
+++ if (status != 0 && WorkAroundNPTLTimedWaitHang) {
+++ pthread_cond_destroy (_cond);
+++ pthread_cond_init (_cond, NULL) ;
+++ }
+++ assert_status(status == 0 || status == EINTR ||
+++ status == ETIME || status == ETIMEDOUT,
+++ status, "cond_timedwait");
+++ if (!FilterSpuriousWakeups) break ; // previous semantics
+++ if (status == ETIME || status == ETIMEDOUT) break ;
+++ // We consume and ignore EINTR and spurious wakeups.
+++ }
+++ --_nParked ;
+++ if (_Event >= 0) {
+++ ret = OS_OK;
+++ }
+++ _Event = 0 ;
+++ status = pthread_mutex_unlock(_mutex);
+++ assert_status(status == 0, status, "mutex_unlock");
+++ assert (_nParked == 0, "invariant") ;
+++ // Paranoia to ensure our locked and lock-free paths interact
+++ // correctly with each other.
+++ OrderAccess::fence();
+++ return ret;
+++}
+++
+++void os::PlatformEvent::unpark() {
+++ // Transitions for _Event:
+++ // 0 :=> 1
+++ // 1 :=> 1
+++ // -1 :=> either 0 or 1; must signal target thread
+++ // That is, we can safely transition _Event from -1 to either
+++ // 0 or 1. Forcing 1 is slightly more efficient for back-to-back
+++ // unpark() calls.
+++ // See also: "Semaphores in Plan 9" by Mullender & Cox
+++ //
+++ // Note: Forcing a transition from "-1" to "1" on an unpark() means
+++ // that it will take two back-to-back park() calls for the owning
+++ // thread to block. This has the benefit of forcing a spurious return
+++ // from the first park() call after an unpark() call which will help
+++ // shake out uses of park() and unpark() without condition variables.
+++
+++ if (Atomic::xchg(1, &_Event) >= 0) return;
+++
+++ // Wait for the thread associated with the event to vacate
+++ int status = pthread_mutex_lock(_mutex);
+++ assert_status(status == 0, status, "mutex_lock");
+++ int AnyWaiters = _nParked;
+++ assert(AnyWaiters == 0 || AnyWaiters == 1, "invariant");
+++ if (AnyWaiters != 0 && WorkAroundNPTLTimedWaitHang) {
+++ AnyWaiters = 0;
+++ pthread_cond_signal(_cond);
+++ }
+++ status = pthread_mutex_unlock(_mutex);
+++ assert_status(status == 0, status, "mutex_unlock");
+++ if (AnyWaiters != 0) {
+++ status = pthread_cond_signal(_cond);
+++ assert_status(status == 0, status, "cond_signal");
+++ }
+++
+++ // Note that we signal() _after dropping the lock for "immortal" Events.
+++ // This is safe and avoids a common class of futile wakeups. In rare
+++ // circumstances this can cause a thread to return prematurely from
+++ // cond_{timed}wait() but the spurious wakeup is benign and the victim will
+++ // simply re-test the condition and re-park itself.
+++}
+++
+++
+++// JSR166
+++// -------------------------------------------------------
+++
+++/*
+++ * The solaris and linux implementations of park/unpark are fairly
+++ * conservative for now, but can be improved. They currently use a
+++ * mutex/condvar pair, plus a a count.
+++ * Park decrements count if > 0, else does a condvar wait. Unpark
+++ * sets count to 1 and signals condvar. Only one thread ever waits
+++ * on the condvar. Contention seen when trying to park implies that someone
+++ * is unparking you, so don't wait. And spurious returns are fine, so there
+++ * is no need to track notifications.
+++ */
+++
+++#define MAX_SECS 100000000
+++/*
+++ * This code is common to linux and solaris and will be moved to a
+++ * common place in dolphin.
+++ *
+++ * The passed in time value is either a relative time in nanoseconds
+++ * or an absolute time in milliseconds. Either way it has to be unpacked
+++ * into suitable seconds and nanoseconds components and stored in the
+++ * given timespec structure.
+++ * Given time is a 64-bit value and the time_t used in the timespec is only
+++ * a signed-32-bit value (except on 64-bit Linux) we have to watch for
+++ * overflow if times way in the future are given. Further on Solaris versions
+++ * prior to 10 there is a restriction (see cond_timedwait) that the specified
+++ * number of seconds, in abstime, is less than current_time + 100,000,000.
+++ * As it will be 28 years before "now + 100000000" will overflow we can
+++ * ignore overflow and just impose a hard-limit on seconds using the value
+++ * of "now + 100,000,000". This places a limit on the timeout of about 3.17
+++ * years from "now".
+++ */
+++
+++static void unpackTime(timespec* absTime, bool isAbsolute, jlong time) {
+++ assert (time > 0, "convertTime");
+++
+++ struct timeval now;
+++ int status = gettimeofday(&now, NULL);
+++ assert(status == 0, "gettimeofday");
+++
+++ time_t max_secs = now.tv_sec + MAX_SECS;
+++
+++ if (isAbsolute) {
+++ jlong secs = time / 1000;
+++ if (secs > max_secs) {
+++ absTime->tv_sec = max_secs;
+++ }
+++ else {
+++ absTime->tv_sec = secs;
+++ }
+++ absTime->tv_nsec = (time % 1000) * NANOSECS_PER_MILLISEC;
+++ }
+++ else {
+++ jlong secs = time / NANOSECS_PER_SEC;
+++ if (secs >= MAX_SECS) {
+++ absTime->tv_sec = max_secs;
+++ absTime->tv_nsec = 0;
+++ }
+++ else {
+++ absTime->tv_sec = now.tv_sec + secs;
+++ absTime->tv_nsec = (time % NANOSECS_PER_SEC) + now.tv_usec*1000;
+++ if (absTime->tv_nsec >= NANOSECS_PER_SEC) {
+++ absTime->tv_nsec -= NANOSECS_PER_SEC;
+++ ++absTime->tv_sec; // note: this must be <= max_secs
+++ }
+++ }
+++ }
+++ assert(absTime->tv_sec >= 0, "tv_sec < 0");
+++ assert(absTime->tv_sec <= max_secs, "tv_sec > max_secs");
+++ assert(absTime->tv_nsec >= 0, "tv_nsec < 0");
+++ assert(absTime->tv_nsec < NANOSECS_PER_SEC, "tv_nsec >= nanos_per_sec");
+++}
+++
+++void Parker::park(bool isAbsolute, jlong time) {
+++ // Ideally we'd do something useful while spinning, such
+++ // as calling unpackTime().
+++
+++ // Optional fast-path check:
+++ // Return immediately if a permit is available.
+++ // We depend on Atomic::xchg() having full barrier semantics
+++ // since we are doing a lock-free update to _counter.
+++ if (Atomic::xchg(0, &_counter) > 0) return;
+++
+++ Thread* thread = Thread::current();
+++ assert(thread->is_Java_thread(), "Must be JavaThread");
+++ JavaThread *jt = (JavaThread *)thread;
+++
+++ // Optional optimization -- avoid state transitions if there's an interrupt pending.
+++ // Check interrupt before trying to wait
+++ if (Thread::is_interrupted(thread, false)) {
+++ return;
+++ }
+++
+++ // Next, demultiplex/decode time arguments
+++ timespec absTime;
+++ if (time < 0 || (isAbsolute && time == 0) ) { // don't wait at all
+++ return;
+++ }
+++ if (time > 0) {
+++ unpackTime(&absTime, isAbsolute, time);
+++ }
+++
+++
+++ // Enter safepoint region
+++ // Beware of deadlocks such as 6317397.
+++ // The per-thread Parker:: mutex is a classic leaf-lock.
+++ // In particular a thread must never block on the Threads_lock while
+++ // holding the Parker:: mutex. If safepoints are pending both the
+++ // the ThreadBlockInVM() CTOR and DTOR may grab Threads_lock.
+++ ThreadBlockInVM tbivm(jt);
+++
+++ // Don't wait if cannot get lock since interference arises from
+++ // unblocking. Also. check interrupt before trying wait
+++ if (Thread::is_interrupted(thread, false) || pthread_mutex_trylock(_mutex) != 0) {
+++ return;
+++ }
+++
+++ int status ;
+++ if (_counter > 0) { // no wait needed
+++ _counter = 0;
+++ status = pthread_mutex_unlock(_mutex);
+++ assert (status == 0, "invariant") ;
+++ // Paranoia to ensure our locked and lock-free paths interact
+++ // correctly with each other and Java-level accesses.
+++ OrderAccess::fence();
+++ return;
+++ }
+++
+++#ifdef ASSERT
+++ // Don't catch signals while blocked; let the running threads have the signals.
+++ // (This allows a debugger to break into the running thread.)
+++ sigset_t oldsigs;
+++ sigset_t* allowdebug_blocked = os::Linux::allowdebug_blocked_signals();
+++ pthread_sigmask(SIG_BLOCK, allowdebug_blocked, &oldsigs);
+++#endif
+++
+++ OSThreadWaitState osts(thread->osthread(), false /* not Object.wait() */);
+++ jt->set_suspend_equivalent();
+++ // cleared by handle_special_suspend_equivalent_condition() or java_suspend_self()
+++
+++ if (time == 0) {
+++ status = pthread_cond_wait (_cond, _mutex) ;
+++ } else {
+++ status = os::Linux::safe_cond_timedwait (_cond, _mutex, &absTime) ;
+++ if (status != 0 && WorkAroundNPTLTimedWaitHang) {
+++ pthread_cond_destroy (_cond) ;
+++ pthread_cond_init (_cond, NULL);
+++ }
+++ }
+++ assert_status(status == 0 || status == EINTR ||
+++ status == ETIME || status == ETIMEDOUT,
+++ status, "cond_timedwait");
+++
+++#ifdef ASSERT
+++ pthread_sigmask(SIG_SETMASK, &oldsigs, NULL);
+++#endif
+++
+++ _counter = 0 ;
+++ status = pthread_mutex_unlock(_mutex) ;
+++ assert_status(status == 0, status, "invariant") ;
+++ // Paranoia to ensure our locked and lock-free paths interact
+++ // correctly with each other and Java-level accesses.
+++ OrderAccess::fence();
+++
+++ // If externally suspended while waiting, re-suspend
+++ if (jt->handle_special_suspend_equivalent_condition()) {
+++ jt->java_suspend_self();
+++ }
+++}
+++
+++void Parker::unpark() {
+++ int s, status ;
+++ status = pthread_mutex_lock(_mutex);
+++ assert (status == 0, "invariant") ;
+++ s = _counter;
+++ _counter = 1;
+++ if (s < 1) {
+++ if (WorkAroundNPTLTimedWaitHang) {
+++ status = pthread_cond_signal (_cond) ;
+++ assert (status == 0, "invariant") ;
+++ status = pthread_mutex_unlock(_mutex);
+++ assert (status == 0, "invariant") ;
+++ } else {
+++ status = pthread_mutex_unlock(_mutex);
+++ assert (status == 0, "invariant") ;
+++ status = pthread_cond_signal (_cond) ;
+++ assert (status == 0, "invariant") ;
+++ }
+++ } else {
+++ pthread_mutex_unlock(_mutex);
+++ assert (status == 0, "invariant") ;
+++ }
+++}
+++
+++
+++extern char** environ;
+++
+++// Run the specified command in a separate process. Return its exit value,
+++// or -1 on failure (e.g. can't fork a new process).
+++// Unlike system(), this function can be called from signal handler. It
+++// doesn't block SIGINT et al.
+++int os::fork_and_exec(char* cmd) {
+++ const char * argv[4] = {"sh", "-c", cmd, NULL};
+++
+++ // fork() in LinuxThreads/NPTL is not async-safe. It needs to run
+++ // pthread_atfork handlers and reset pthread library. All we need is a
+++ // separate process to execve. Make a direct syscall to fork process.
+++ // On IA64 there's no fork syscall, we have to use fork() and hope for
+++ // the best...
+++ pid_t pid = NOT_IA64(NOT_AARCH64(syscall(SYS_fork);))
+++ IA64_ONLY(fork();)
+++ AARCH64_ONLY(vfork();)
+++
+++ if (pid < 0) {
+++ // fork failed
+++ return -1;
+++
+++ } else if (pid == 0) {
+++ // child process
+++
+++ // execve() in LinuxThreads will call pthread_kill_other_threads_np()
+++ // first to kill every thread on the thread list. Because this list is
+++ // not reset by fork() (see notes above), execve() will instead kill
+++ // every thread in the parent process. We know this is the only thread
+++ // in the new process, so make a system call directly.
+++ // IA64 should use normal execve() from glibc to match the glibc fork()
+++ // above.
+++ NOT_IA64(syscall(SYS_execve, "/bin/sh", argv, environ);)
+++ IA64_ONLY(execve("/bin/sh", (char* const*)argv, environ);)
+++
+++ // execve failed
+++ _exit(-1);
+++
+++ } else {
+++ // copied from J2SE ..._waitForProcessExit() in UNIXProcess_md.c; we don't
+++ // care about the actual exit code, for now.
+++
+++ int status;
+++
+++ // Wait for the child process to exit. This returns immediately if
+++ // the child has already exited. */
+++ while (waitpid(pid, &status, 0) < 0) {
+++ switch (errno) {
+++ case ECHILD: return 0;
+++ case EINTR: break;
+++ default: return -1;
+++ }
+++ }
+++
+++ if (WIFEXITED(status)) {
+++ // The child exited normally; get its exit code.
+++ return WEXITSTATUS(status);
+++ } else if (WIFSIGNALED(status)) {
+++ // The child exited because of a signal
+++ // The best value to return is 0x80 + signal number,
+++ // because that is what all Unix shells do, and because
+++ // it allows callers to distinguish between process exit and
+++ // process death by signal.
+++ return 0x80 + WTERMSIG(status);
+++ } else {
+++ // Unknown exit code; pass it through
+++ return status;
+++ }
+++ }
+++}
+++
+++// is_headless_jre()
+++//
+++// Test for the existence of xawt/libmawt.so or libawt_xawt.so
+++// in order to report if we are running in a headless jre
+++//
+++// Since JDK8 xawt/libmawt.so was moved into the same directory
+++// as libawt.so, and renamed libawt_xawt.so
+++//
+++bool os::is_headless_jre() {
+++ struct stat statbuf;
+++ char buf[MAXPATHLEN];
+++ char libmawtpath[MAXPATHLEN];
+++ const char *xawtstr = "/xawt/libmawt.so";
+++ const char *new_xawtstr = "/libawt_xawt.so";
+++ char *p;
+++
+++ // Get path to libjvm.so
+++ os::jvm_path(buf, sizeof(buf));
+++
+++ // Get rid of libjvm.so
+++ p = strrchr(buf, '/');
+++ if (p == NULL) return false;
+++ else *p = '\0';
+++
+++ // Get rid of client or server
+++ p = strrchr(buf, '/');
+++ if (p == NULL) return false;
+++ else *p = '\0';
+++
+++ // check xawt/libmawt.so
+++ strcpy(libmawtpath, buf);
+++ strcat(libmawtpath, xawtstr);
+++ if (::stat(libmawtpath, &statbuf) == 0) return false;
+++
+++ // check libawt_xawt.so
+++ strcpy(libmawtpath, buf);
+++ strcat(libmawtpath, new_xawtstr);
+++ if (::stat(libmawtpath, &statbuf) == 0) return false;
+++
+++ return true;
+++}
+++
+++// Get the default path to the core file
+++// Returns the length of the string
+++int os::get_core_path(char* buffer, size_t bufferSize) {
+++ const char* p = get_current_directory(buffer, bufferSize);
+++
+++ if (p == NULL) {
+++ assert(p != NULL, "failed to get current directory");
+++ return 0;
+++ }
+++
+++ return strlen(buffer);
+++}
+++
+++#ifdef JAVASE_EMBEDDED
+++//
+++// A thread to watch the '/dev/mem_notify' device, which will tell us when the OS is running low on memory.
+++//
+++MemNotifyThread* MemNotifyThread::_memnotify_thread = NULL;
+++
+++// ctor
+++//
+++MemNotifyThread::MemNotifyThread(int fd): Thread() {
+++ assert(memnotify_thread() == NULL, "we can only allocate one MemNotifyThread");
+++ _fd = fd;
+++
+++ if (os::create_thread(this, os::os_thread)) {
+++ _memnotify_thread = this;
+++ os::set_priority(this, NearMaxPriority);
+++ os::start_thread(this);
+++ }
+++}
+++
+++// Where all the work gets done
+++//
+++void MemNotifyThread::run() {
+++ assert(this == memnotify_thread(), "expected the singleton MemNotifyThread");
+++
+++ // Set up the select arguments
+++ fd_set rfds;
+++ if (_fd != -1) {
+++ FD_ZERO(&rfds);
+++ FD_SET(_fd, &rfds);
+++ }
+++
+++ // Now wait for the mem_notify device to wake up
+++ while (1) {
+++ // Wait for the mem_notify device to signal us..
+++ int rc = select(_fd+1, _fd != -1 ? &rfds : NULL, NULL, NULL, NULL);
+++ if (rc == -1) {
+++ perror("select!\n");
+++ break;
+++ } else if (rc) {
+++ //ssize_t free_before = os::available_memory();
+++ //tty->print ("Notified: Free: %dK \n",os::available_memory()/1024);
+++
+++ // The kernel is telling us there is not much memory left...
+++ // try to do something about that
+++
+++ // If we are not already in a GC, try one.
+++ if (!Universe::heap()->is_gc_active()) {
+++ Universe::heap()->collect(GCCause::_allocation_failure);
+++
+++ //ssize_t free_after = os::available_memory();
+++ //tty->print ("Post-Notify: Free: %dK\n",free_after/1024);
+++ //tty->print ("GC freed: %dK\n", (free_after - free_before)/1024);
+++ }
+++ // We might want to do something like the following if we find the GC's are not helping...
+++ // Universe::heap()->size_policy()->set_gc_time_limit_exceeded(true);
+++ }
+++ }
+++}
+++
+++//
+++// See if the /dev/mem_notify device exists, and if so, start a thread to monitor it.
+++//
+++void MemNotifyThread::start() {
+++ int fd;
+++ fd = open ("/dev/mem_notify", O_RDONLY, 0);
+++ if (fd < 0) {
+++ return;
+++ }
+++
+++ if (memnotify_thread() == NULL) {
+++ new MemNotifyThread(fd);
+++ }
+++}
+++
+++#endif // JAVASE_EMBEDDED
+diff -Nur openjdk.orig/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp openjdk/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp
-+--- openjdk.orig/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp 2014-01-28 18:58:08.000000000 +0100
-++++ openjdk/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp 2014-02-10 11:31:48.000000000 +0100
++--- openjdk.orig/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp 2014-02-20 19:51:45.000000000 +0100
+++++ openjdk/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp 2014-05-13 16:14:56.641091455 +0200
+@@ -253,7 +253,7 @@
+ #elif defined(__APPLE__)
+ inline int g_isnan(double f) { return isnan(f); }
@@ -95,8 +6116,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk
+
+ // Wide characters
+diff -Nur openjdk.orig/jdk/make/com/sun/java/pack/Makefile openjdk/jdk/make/com/sun/java/pack/Makefile
-+--- openjdk.orig/jdk/make/com/sun/java/pack/Makefile 2014-01-28 19:02:26.000000000 +0100
-++++ openjdk/jdk/make/com/sun/java/pack/Makefile 2014-02-10 11:31:48.000000000 +0100
++--- openjdk.orig/jdk/make/com/sun/java/pack/Makefile 2014-04-12 01:23:06.000000000 +0200
+++++ openjdk/jdk/make/com/sun/java/pack/Makefile 2014-05-13 16:14:56.641091455 +0200
+@@ -79,7 +79,7 @@
+ OTHER_CXXFLAGS += $(ZLIB_CFLAGS) -DSYSTEM_ZLIB
+ endif
@@ -107,8 +6128,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk
+ endif
+
+diff -Nur openjdk.orig/jdk/make/com/sun/nio/sctp/Makefile openjdk/jdk/make/com/sun/nio/sctp/Makefile
-+--- openjdk.orig/jdk/make/com/sun/nio/sctp/Makefile 2014-01-28 19:02:26.000000000 +0100
-++++ openjdk/jdk/make/com/sun/nio/sctp/Makefile 2014-02-10 11:31:48.000000000 +0100
++--- openjdk.orig/jdk/make/com/sun/nio/sctp/Makefile 2014-04-12 01:23:06.000000000 +0200
+++++ openjdk/jdk/make/com/sun/nio/sctp/Makefile 2014-05-13 16:14:56.641091455 +0200
+@@ -64,7 +64,7 @@
+ COMPILER_WARNINGS_FATAL=true
+ endif
@@ -119,8 +6140,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk
+ ifeq ($(PLATFORM), solaris)
+ #LIBSCTP = -lsctp
+diff -Nur openjdk.orig/jdk/make/common/Defs.gmk openjdk/jdk/make/common/Defs.gmk
-+--- openjdk.orig/jdk/make/common/Defs.gmk 2014-01-28 19:02:26.000000000 +0100
-++++ openjdk/jdk/make/common/Defs.gmk 2014-02-10 11:31:48.000000000 +0100
++--- openjdk.orig/jdk/make/common/Defs.gmk 2014-04-12 01:23:06.000000000 +0200
+++++ openjdk/jdk/make/common/Defs.gmk 2014-05-13 16:14:56.641091455 +0200
+@@ -204,7 +204,7 @@
+ ifeq ($(PLATFORM), macosx)
+ FREETYPE_HEADERS_PATH = /usr/X11R6/include
@@ -131,8 +6152,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk
+ endif
+ endif
+diff -Nur openjdk.orig/jdk/make/common/Sanity.gmk openjdk/jdk/make/common/Sanity.gmk
-+--- openjdk.orig/jdk/make/common/Sanity.gmk 2014-01-28 19:02:26.000000000 +0100
-++++ openjdk/jdk/make/common/Sanity.gmk 2014-02-12 12:28:47.000000000 +0100
++--- openjdk.orig/jdk/make/common/Sanity.gmk 2014-04-12 01:23:06.000000000 +0200
+++++ openjdk/jdk/make/common/Sanity.gmk 2014-05-13 16:14:56.641091455 +0200
+@@ -91,8 +91,7 @@
+ sane-ld_run_path \
+ sane-alt_bootdir \
@@ -144,8 +6165,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk
+ ifdef OPENJDK
+ sanity-all:: sane-freetype
+diff -Nur openjdk.orig/jdk/make/common/shared/Platform.gmk openjdk/jdk/make/common/shared/Platform.gmk
-+--- openjdk.orig/jdk/make/common/shared/Platform.gmk 2014-01-28 19:02:26.000000000 +0100
-++++ openjdk/jdk/make/common/shared/Platform.gmk 2014-02-10 11:32:16.000000000 +0100
++--- openjdk.orig/jdk/make/common/shared/Platform.gmk 2014-04-12 01:23:06.000000000 +0200
+++++ openjdk/jdk/make/common/shared/Platform.gmk 2014-05-13 16:14:56.641091455 +0200
+@@ -160,9 +160,6 @@
+ else
+ mach := $(shell uname -m)
@@ -157,8 +6178,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk
+ i[3-9]86) \
+ echo i586 \
+diff -Nur openjdk.orig/jdk/make/common/shared/Sanity.gmk openjdk/jdk/make/common/shared/Sanity.gmk
-+--- openjdk.orig/jdk/make/common/shared/Sanity.gmk 2014-01-28 19:02:26.000000000 +0100
-++++ openjdk/jdk/make/common/shared/Sanity.gmk 2014-02-12 12:31:12.000000000 +0100
++--- openjdk.orig/jdk/make/common/shared/Sanity.gmk 2014-04-12 01:23:06.000000000 +0200
+++++ openjdk/jdk/make/common/shared/Sanity.gmk 2014-05-13 16:14:56.641091455 +0200
+@@ -114,11 +114,6 @@
+ elif [ -f /etc/lsb-release ] ; then \
+ $(EGREP) DISTRIB_RELEASE /etc/lsb-release | $(SED) -e 's@.*DISTRIB_RELEASE=\(.*\)@\1@'; \
@@ -215,8 +6236,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk
+ # If a sanity file doesn't exist, just make sure it's dir exists
+ $(SANITY_FILES):
+diff -Nur openjdk.orig/jdk/make/java/instrument/Makefile openjdk/jdk/make/java/instrument/Makefile
-+--- openjdk.orig/jdk/make/java/instrument/Makefile 2014-01-28 19:02:26.000000000 +0100
-++++ openjdk/jdk/make/java/instrument/Makefile 2014-02-10 11:31:49.000000000 +0100
++--- openjdk.orig/jdk/make/java/instrument/Makefile 2014-04-12 01:23:06.000000000 +0200
+++++ openjdk/jdk/make/java/instrument/Makefile 2014-05-13 16:14:56.641091455 +0200
+@@ -140,6 +140,8 @@
+ # We don't want to link against -ljava
+ JAVALIB=
@@ -227,8 +6248,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk
+ # Add to ambient vpath so we pick up the library files
+ #
+diff -Nur openjdk.orig/jdk/make/java/net/Makefile openjdk/jdk/make/java/net/Makefile
-+--- openjdk.orig/jdk/make/java/net/Makefile 2014-01-28 19:02:26.000000000 +0100
-++++ openjdk/jdk/make/java/net/Makefile 2014-02-10 11:31:49.000000000 +0100
++--- openjdk.orig/jdk/make/java/net/Makefile 2014-04-12 01:23:06.000000000 +0200
+++++ openjdk/jdk/make/java/net/Makefile 2014-05-13 16:14:56.641091455 +0200
+@@ -25,7 +25,7 @@
+
+ BUILDDIR = ../..
@@ -239,8 +6260,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk
+ include $(BUILDDIR)/common/Defs.gmk
+
+diff -Nur openjdk.orig/jdk/make/java/nio/Makefile openjdk/jdk/make/java/nio/Makefile
-+--- openjdk.orig/jdk/make/java/nio/Makefile 2014-01-28 19:02:26.000000000 +0100
-++++ openjdk/jdk/make/java/nio/Makefile 2014-02-10 11:31:49.000000000 +0100
++--- openjdk.orig/jdk/make/java/nio/Makefile 2014-04-12 01:23:06.000000000 +0200
+++++ openjdk/jdk/make/java/nio/Makefile 2014-05-13 16:14:56.645091463 +0200
+@@ -373,7 +373,7 @@
+ endif
+
@@ -269,8 +6290,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk
+ ifdef NIO_PLATFORM_CLASSES_ROOT_DIR
+ $(SFS_GEN)/UnixConstants.java: $(NIO_PLATFORM_CLASSES_ROOT_DIR)/sun/nio/fs/UnixConstants-$(PLATFORM)-$(ARCH).java
+diff -Nur openjdk.orig/jdk/make/java/npt/Makefile openjdk/jdk/make/java/npt/Makefile
-+--- openjdk.orig/jdk/make/java/npt/Makefile 2014-01-28 19:02:26.000000000 +0100
-++++ openjdk/jdk/make/java/npt/Makefile 2014-02-10 11:31:49.000000000 +0100
++--- openjdk.orig/jdk/make/java/npt/Makefile 2014-04-12 01:23:06.000000000 +0200
+++++ openjdk/jdk/make/java/npt/Makefile 2014-05-13 16:14:56.645091463 +0200
+@@ -64,6 +64,8 @@
+ # We don't want to link against -ljava
+ JAVALIB=
@@ -281,8 +6302,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk
+ ifeq ($(PLATFORM), windows)
+ OTHER_LCF += -export:nptInitialize -export:nptTerminate
+diff -Nur openjdk.orig/jdk/make/sun/awt/mawt.gmk openjdk/jdk/make/sun/awt/mawt.gmk
-+--- openjdk.orig/jdk/make/sun/awt/mawt.gmk 2014-01-28 19:02:26.000000000 +0100
-++++ openjdk/jdk/make/sun/awt/mawt.gmk 2014-02-10 11:31:49.000000000 +0100
++--- openjdk.orig/jdk/make/sun/awt/mawt.gmk 2014-04-12 01:23:06.000000000 +0200
+++++ openjdk/jdk/make/sun/awt/mawt.gmk 2014-05-13 16:14:56.645091463 +0200
+@@ -151,22 +151,6 @@
+ #endif
+
@@ -315,7 +6336,7 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk
+ endif
+
+ endif
-+@@ -230,11 +214,6 @@
++@@ -231,11 +215,6 @@
+ CPPFLAGS += -I$(PLATFORM_SRC)/native/common/deps/fontconfig2
+ endif
+
@@ -327,7 +6348,7 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk
+
+ CPPFLAGS += -I$(SHARE_SRC)/native/$(PKGDIR)/debug \
+ -I$(SHARE_SRC)/native/$(PKGDIR)/../font \
-+@@ -269,11 +248,6 @@
++@@ -270,11 +249,6 @@
+ endif # !HEADLESS
+ endif # PLATFORM
+
@@ -339,9 +6360,310 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk
+
+ ifeq ($(PLATFORM), macosx))
+ CPPFLAGS += -I$(OPENWIN_HOME)/include/X11/extensions \
++diff -Nur openjdk.orig/jdk/make/sun/awt/mawt.gmk.orig openjdk/jdk/make/sun/awt/mawt.gmk.orig
++--- openjdk.orig/jdk/make/sun/awt/mawt.gmk.orig 1970-01-01 01:00:00.000000000 +0100
+++++ openjdk/jdk/make/sun/awt/mawt.gmk.orig 2014-04-12 01:23:06.000000000 +0200
++@@ -0,0 +1,297 @@
+++#
+++# Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.
+++# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+++#
+++# This code is free software; you can redistribute it and/or modify it
+++# under the terms of the GNU General Public License version 2 only, as
+++# published by the Free Software Foundation. Oracle designates this
+++# particular file as subject to the "Classpath" exception as provided
+++# by Oracle in the LICENSE file that accompanied this code.
+++#
+++# This code is distributed in the hope that it will be useful, but WITHOUT
+++# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+++# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+++# version 2 for more details (a copy is included in the LICENSE file that
+++# accompanied this code).
+++#
+++# You should have received a copy of the GNU General Public License version
+++# 2 along with this work; if not, write to the Free Software Foundation,
+++# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+++#
+++# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+++# or visit www.oracle.com if you need additional information or have any
+++# questions.
+++#
+++
+++#
+++# to create directory:
+++#
+++INIT += $(LIB_LOCATION)
+++
+++#
+++# Files
+++#
+++# mawt.gmk is just used in building X/Motif native code, so
+++# this list of java files is no longer included.
+++#include FILES_java_unix.gmk
+++include $(BUILDDIR)/sun/awt/FILES_c_unix.gmk
+++
+++include $(BUILDDIR)/sun/awt/FILES_export_unix.gmk
+++
+++# Check which C files should be built. Headless uses only
+++# non-motif files. Also, a version-specific motif file is
+++# compiled based on the motif version.
+++ifdef HEADLESS
+++ FILES_c = $(FILES_NO_MOTIF_c)
+++else
+++# FILES_c = $(FILES_MOTIF_c) $(FILES_NO_MOTIF_c)
+++# XXX if in FILES_MOTIF_c there are unrelated to motif stuff, create a separate list!
+++ FILES_c = $(FILES_NO_MOTIF_c)
+++endif
+++
+++ifeq ($(PLATFORM), solaris)
+++ ifneq ($(ARCH), amd64)
+++ FILES_reorder += reorder-$(ARCH)
+++ endif
+++endif
+++
+++#
+++# Rules
+++#
+++
+++# Class files should be built & clobbered in make/sun/awt
+++# If removing this line, also reinclude sun_awt.jmk
+++DONT_CLOBBER_CLASSES = true
+++
+++
+++ifndef HEADLESS
+++ifeq ($(VARIANT), OPT)
+++FILES_m = ../awt/mapfile-mawt-vers
+++endif
+++endif
+++
+++# Since this library will be living in a subdirectory below the other libraries
+++# we need to add an extra runpath so that libraries in the upper directory
+++# are found at runtime.
+++LD_RUNPATH_EXTRAS = ..
+++
+++include $(BUILDDIR)/common/Mapfile-vers.gmk
+++include $(BUILDDIR)/common/Library.gmk
+++
+++$(LIB_LOCATION):
+++ $(MKDIR) -p $@
+++
+++clean::
+++
+++#
+++# Add to the ambient vpath to pick up files in subdirectories
+++#
+++vpath %.c $(SHARE_SRC)/native/$(PKGDIR)/alphacomposite
+++vpath %.c $(SHARE_SRC)/native/$(PKGDIR)/image
+++vpath %.c $(SHARE_SRC)/native/$(PKGDIR)/image/gif
+++vpath %.c $(SHARE_SRC)/native/$(PKGDIR)/image/cvutils
+++vpath %.c $(SHARE_SRC)/native/$(PKGDIR)/shell
+++vpath %.c $(SHARE_SRC)/native/$(PKGDIR)/medialib
+++vpath %.c $(SHARE_SRC)/native/$(PKGDIR)/../java2d/opengl
+++vpath %.c $(PLATFORM_SRC)/native/$(PKGDIR)/../java2d/opengl
+++vpath %.c $(PLATFORM_SRC)/native/$(PKGDIR)/../java2d/x11
+++vpath %.c $(SHARE_SRC)/native/$(PKGDIR)/debug
+++vpath %.c $(SHARE_SRC)/native/$(PKGDIR)/../font
+++vpath %.c $(SHARE_SRC)/native/$(PKGDIR)/../java2d
+++vpath %.c $(SHARE_SRC)/native/$(PKGDIR)/../java2d/loops
+++vpath %.c $(SHARE_SRC)/native/$(PKGDIR)/../java2d/pipe
+++vpath %.cpp $(SHARE_SRC)/native/$(PKGDIR)/image
+++vpath %.c $(PLATFORM_SRC)/native/$(PKGDIR)/robot_child
+++
+++ifndef USE_SYSTEM_CUPS
+++vpath %.c $(PLATFORM_SRC)/native/common/deps
+++endif
+++
+++ifndef USE_SYSTEM_FONTCONFIG
+++vpath %.c $(PLATFORM_SRC)/native/common/deps/fontconfig2
+++endif
+++
+++#
+++# Libraries to link in.
+++#
+++
+++
+++ifeq ($(DEBUG_BINARIES), true)
+++ CFLAGS += -g
+++endif
+++ifeq ($(HEADLESS),true)
+++CFLAGS += -DHEADLESS=$(HEADLESS)
+++CPPFLAGS += -DHEADLESS=$(HEADLESS)
+++OTHER_LDLIBS =
+++else
+++#CFLAGS += -DMOTIF_VERSION=$(MOTIF_VERSION)
+++
+++#ifeq ($(STATIC_MOTIF),true)
+++# LIBXM = $(MOTIF_LIB)/libXm.a -lXp -lXmu
+++# ifeq ($(PLATFORM), linux)
+++# ifeq ($(ARCH_DATA_MODEL), 64)
+++# LIBXT = -lXt
+++# else
+++# # Allows for builds on Debian GNU Linux, X11 is in a different place
+++# LIBXT = $(firstword $(wildcard /usr/X11R6/lib/libXt.a) \
+++# $(wildcard /usr/lib/libXt.a))
+++# LIBSM = $(firstword $(wildcard /usr/X11R6/lib/libSM.a) \
+++# $(wildcard /usr/lib/libSM.a))
+++# LIBICE = $(firstword $(wildcard /usr/X11R6/lib/libICE.a) \
+++# $(wildcard /usr/lib/libICE.a))
+++# endif
+++# endif
+++#else
+++# LIBXM = -L$(MOTIF_LIB) -lXm -lXp
+++# ifeq ($(PLATFORM), linux)
+++# LIBXT = -lXt
+++# LIBSM =
+++# LIBICE =
+++# endif
+++#endif
+++
+++LIBXTST = -lXtst
+++ifeq ($(PLATFORM), linux)
+++ ifeq ($(ARCH_DATA_MODEL), 64)
+++ # XXX what about the rest of them?
+++ LIBXT = -lXt
+++ else
+++ # Allows for builds on Debian GNU Linux, X11 is in a different place
+++ LIBXT = $(firstword $(wildcard $(OPENWIN_LIB)/libXt.a) \
+++ $(wildcard /usr/lib/libXt.a))
+++ LIBSM = $(firstword $(wildcard $(OPENWIN_LIB)/libSM.a) \
+++ $(wildcard /usr/lib/libSM.a))
+++ LIBICE = $(firstword $(wildcard $(OPENWIN_LIB)/libICE.a) \
+++ $(wildcard /usr/lib/libICE.a))
+++ LIBXTST = $(firstword $(wildcard $(OPENWIN_LIB)/libXtst.a) \
+++ $(wildcard /usr/lib/libXtst.a))
+++ endif
+++endif
+++
+++# Use -lXmu for EditRes support
+++LIBXMU_DBG = -lXmu
+++LIBXMU_OPT =
+++LIBXMU = $(LIBXMU_$(VARIANT))
+++
+++ifeq ($(PLATFORM), solaris)
+++OTHER_LDLIBS = -lXt -lXext $(LIBXTST) $(LIBXMU) -lX11 -lXi
+++endif
+++
+++ifneq (,$(findstring $(PLATFORM), linux macosx))
+++OTHER_CFLAGS += -DMLIB_NO_LIBSUNMATH
+++# XXX what is this define below? Isn't it motif-related?
+++OTHER_CFLAGS += -DXMSTRINGDEFINES=1
+++OTHER_LDLIBS = $(LIBXMU) $(LIBXTST) -lXext $(LIBXT) $(LIBSM) $(LIBICE) -lX11 -lXi
+++endif
+++
+++endif
+++# !HEADLESS
+++
+++OTHER_LDLIBS += $(JVMLIB) $(LIBCXX) \
+++ -lawt $(LIBM)
+++
+++ifdef USE_SYSTEM_CUPS
+++ OTHER_LDLIBS += $(CUPS_LIBS)
+++else
+++ OTHER_LDLIBS += $(LIBDL)
+++endif
+++
+++ifdef USE_SYSTEM_FONTCONFIG
+++ OTHER_LDLIBS += $(FONTCONFIG_LIBS)
+++else
+++ OTHER_LDLIBS += $(LIBDL)
+++endif
+++
+++#
+++# Sun CC with -Xa misdefines __STDC__ to 0 (zero).
+++# The following will force checking of X11 prototypes.
+++#
+++ifneq ($(CC_VERSION),gcc)
+++CPPFLAGS += -DFUNCPROTO=15
+++endif
+++
+++#
+++# Other extra flags needed for compiling.
+++#
+++ifdef CUPS_CFLAGS
+++ CPPFLAGS += $(CUPS_CFLAGS)
+++else
+++ CPPFLAGS += -I$(CUPS_HEADERS_PATH)
+++endif
+++
+++ifdef USE_SYSTEM_CUPS
+++ CPPFLAGS += -DUSE_SYSTEM_CUPS
+++else
+++ CPPFLAGS += -I$(PLATFORM_SRC)/native/common/deps
+++endif
+++
+++ifdef USE_SYSTEM_FONTCONFIG
+++ CPPFLAGS += $(FONTCONFIG_CFLAGS) -DUSE_SYSTEM_FONTCONFIG
+++else
+++ CPPFLAGS += -I$(PLATFORM_SRC)/native/common/deps/fontconfig2
+++endif
+++
+++ifndef HEADLESS
+++CPPFLAGS += -I$(OPENWIN_HOME)/include
+++LDFLAGS += -L$(OPENWIN_LIB)
+++
+++endif # !HEADLESS
+++
+++CPPFLAGS += -I$(SHARE_SRC)/native/$(PKGDIR)/debug \
+++ -I$(SHARE_SRC)/native/$(PKGDIR)/../font \
+++ -I$(PLATFORM_SRC)/native/$(PKGDIR)/../font \
+++ -I$(SHARE_SRC)/native/$(PKGDIR)/image \
+++ -I$(SHARE_SRC)/native/$(PKGDIR)/image/cvutils \
+++ -I$(SHARE_SRC)/native/$(PKGDIR)/shell \
+++ -I$(SHARE_SRC)/native/$(PKGDIR)/alphacomposite \
+++ -I$(SHARE_SRC)/native/$(PKGDIR)/medialib \
+++ -I$(PLATFORM_SRC)/native/$(PKGDIR)/medialib \
+++ -I$(SHARE_SRC)/native/$(PKGDIR)/../java2d \
+++ -I$(PLATFORM_SRC)/native/$(PKGDIR)/../java2d \
+++ -I$(SHARE_SRC)/native/$(PKGDIR)/../java2d/loops \
+++ -I$(SHARE_SRC)/native/$(PKGDIR)/../java2d/pipe \
+++ -I$(SHARE_SRC)/native/$(PKGDIR)/../java2d/opengl \
+++ -I$(PLATFORM_SRC)/native/$(PKGDIR)/../java2d/opengl \
+++ -I$(PLATFORM_SRC)/native/$(PKGDIR)/../java2d/x11 \
+++ -I$(SHARE_SRC)/native/$(PKGDIR)/../dc/doe \
+++ -I$(SHARE_SRC)/native/$(PKGDIR)/../dc/path \
+++ -I$(PLATFORM_SRC)/native/$(PKGDIR)/../jdga \
+++ -I$(PLATFORM_SRC)/native/$(PKGDIR) \
+++ $(EVENT_MODEL)
+++
+++ifeq ($(PLATFORM), macosx)
+++CPPFLAGS += -I$(CUPS_HEADERS_PATH)
+++
+++ifndef HEADLESS
+++CPPFLAGS += -I$(MOTIF_DIR)/include \
+++ -I$(OPENWIN_HOME)/include
+++LDFLAGS += -L$(MOTIF_LIB) -L$(OPENWIN_LIB)
+++
+++endif # !HEADLESS
+++endif # PLATFORM
+++
+++ifeq ($(PLATFORM), linux)
+++ # Checking for the X11/extensions headers at the additional location
+++ CPPFLAGS += -I$(firstword $(wildcard $(OPENWIN_HOME)/include/X11/extensions) \
+++ $(wildcard /usr/include/X11/extensions))
+++endif
+++
+++ifeq ($(PLATFORM), macosx))
+++ CPPFLAGS += -I$(OPENWIN_HOME)/include/X11/extensions \
+++ -I$(OPENWIN_HOME)/include
+++endif
+++
+++ifeq ($(PLATFORM), solaris)
+++ CPPFLAGS += -I$(OPENWIN_HOME)/include/X11/extensions
+++endif
+++
+++ifeq ($(PLATFORM), macosx)
+++ CPPFLAGS += -DX11_PATH=\"$(X11_PATH)\" -DPACKAGE_PATH=\"$(PACKAGE_PATH)\"
+++endif
+++
+++LDFLAGS += -L$(LIBDIR)/$(LIBARCH)/$(TSOBJDIR) \
+++ $(AWT_RUNPATH)
+++
+++CLASSES.export += java.io.InputStream \
+++ java.lang.ThreadGroup
+++
+diff -Nur openjdk.orig/jdk/make/sun/splashscreen/Makefile openjdk/jdk/make/sun/splashscreen/Makefile
-+--- openjdk.orig/jdk/make/sun/splashscreen/Makefile 2014-01-28 19:02:26.000000000 +0100
-++++ openjdk/jdk/make/sun/splashscreen/Makefile 2014-02-10 11:31:50.000000000 +0100
++--- openjdk.orig/jdk/make/sun/splashscreen/Makefile 2014-04-12 01:23:06.000000000 +0200
+++++ openjdk/jdk/make/sun/splashscreen/Makefile 2014-05-13 16:14:56.645091463 +0200
+@@ -55,6 +55,8 @@
+
+ JAVALIB=
@@ -352,8 +6674,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk
+ # C Flags
+ #
+diff -Nur openjdk.orig/jdk/make/sun/xawt/Makefile openjdk/jdk/make/sun/xawt/Makefile
-+--- openjdk.orig/jdk/make/sun/xawt/Makefile 2014-01-28 19:02:26.000000000 +0100
-++++ openjdk/jdk/make/sun/xawt/Makefile 2014-02-10 11:31:50.000000000 +0100
++--- openjdk.orig/jdk/make/sun/xawt/Makefile 2014-04-12 01:23:06.000000000 +0200
+++++ openjdk/jdk/make/sun/xawt/Makefile 2014-05-13 16:14:56.645091463 +0200
+@@ -292,16 +292,10 @@
+ SIZERS = $(SIZER).32
+ SIZERS_C = $(SIZER_32_C)
@@ -394,8 +6716,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk
+ @if [ "$(DOCOMPARE)$(suffix $@)" = "true.64" ]; then \
+ $(ECHO) COMPARING $@ and $(STORED_SIZES_TMPL_$(PLATFORM)_$(LIBARCH)); \
+diff -Nur openjdk.orig/jdk/src/share/classes/java/net/AbstractPlainDatagramSocketImpl.java openjdk/jdk/src/share/classes/java/net/AbstractPlainDatagramSocketImpl.java
-+--- openjdk.orig/jdk/src/share/classes/java/net/AbstractPlainDatagramSocketImpl.java 2014-01-28 19:02:26.000000000 +0100
-++++ openjdk/jdk/src/share/classes/java/net/AbstractPlainDatagramSocketImpl.java 2014-02-10 11:31:50.000000000 +0100
++--- openjdk.orig/jdk/src/share/classes/java/net/AbstractPlainDatagramSocketImpl.java 2014-04-12 01:23:06.000000000 +0200
+++++ openjdk/jdk/src/share/classes/java/net/AbstractPlainDatagramSocketImpl.java 2014-05-13 16:14:56.645091463 +0200
+@@ -69,7 +69,7 @@
+ */
+ static {
@@ -406,8 +6728,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk
+
+ /**
+diff -Nur openjdk.orig/jdk/src/share/classes/java/net/AbstractPlainSocketImpl.java openjdk/jdk/src/share/classes/java/net/AbstractPlainSocketImpl.java
-+--- openjdk.orig/jdk/src/share/classes/java/net/AbstractPlainSocketImpl.java 2014-01-28 19:02:26.000000000 +0100
-++++ openjdk/jdk/src/share/classes/java/net/AbstractPlainSocketImpl.java 2014-02-10 11:31:50.000000000 +0100
++--- openjdk.orig/jdk/src/share/classes/java/net/AbstractPlainSocketImpl.java 2014-04-12 01:23:06.000000000 +0200
+++++ openjdk/jdk/src/share/classes/java/net/AbstractPlainSocketImpl.java 2014-05-13 16:14:56.645091463 +0200
+@@ -78,7 +78,7 @@
+ */
+ static {
@@ -418,8 +6740,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk
+
+ /**
+diff -Nur openjdk.orig/jdk/src/share/classes/java/net/DatagramPacket.java openjdk/jdk/src/share/classes/java/net/DatagramPacket.java
-+--- openjdk.orig/jdk/src/share/classes/java/net/DatagramPacket.java 2014-01-28 19:02:26.000000000 +0100
-++++ openjdk/jdk/src/share/classes/java/net/DatagramPacket.java 2014-02-10 11:31:50.000000000 +0100
++--- openjdk.orig/jdk/src/share/classes/java/net/DatagramPacket.java 2014-04-12 01:23:06.000000000 +0200
+++++ openjdk/jdk/src/share/classes/java/net/DatagramPacket.java 2014-05-13 16:14:56.645091463 +0200
+@@ -47,7 +47,7 @@
+ */
+ static {
@@ -430,8 +6752,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk
+ }
+
+diff -Nur openjdk.orig/jdk/src/share/classes/java/net/InetAddress.java openjdk/jdk/src/share/classes/java/net/InetAddress.java
-+--- openjdk.orig/jdk/src/share/classes/java/net/InetAddress.java 2014-01-28 19:02:26.000000000 +0100
-++++ openjdk/jdk/src/share/classes/java/net/InetAddress.java 2014-02-10 11:31:50.000000000 +0100
++--- openjdk.orig/jdk/src/share/classes/java/net/InetAddress.java 2014-04-12 01:23:06.000000000 +0200
+++++ openjdk/jdk/src/share/classes/java/net/InetAddress.java 2014-05-13 16:14:56.649091471 +0200
+@@ -267,7 +267,7 @@
+ static {
+ preferIPv6Address = java.security.AccessController.doPrivileged(
@@ -442,8 +6764,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk
+ }
+
+diff -Nur openjdk.orig/jdk/src/share/classes/java/net/NetworkInterface.java openjdk/jdk/src/share/classes/java/net/NetworkInterface.java
-+--- openjdk.orig/jdk/src/share/classes/java/net/NetworkInterface.java 2014-01-28 19:02:26.000000000 +0100
-++++ openjdk/jdk/src/share/classes/java/net/NetworkInterface.java 2014-02-10 11:31:50.000000000 +0100
++--- openjdk.orig/jdk/src/share/classes/java/net/NetworkInterface.java 2014-04-12 01:23:06.000000000 +0200
+++++ openjdk/jdk/src/share/classes/java/net/NetworkInterface.java 2014-05-13 16:14:56.649091471 +0200
+@@ -53,7 +53,7 @@
+ private static final int defaultIndex; /* index of defaultInterface */
+
@@ -454,8 +6776,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk
+ defaultInterface = DefaultInterface.getDefault();
+ if (defaultInterface != null) {
+diff -Nur openjdk.orig/jdk/src/share/classes/sun/net/sdp/SdpSupport.java openjdk/jdk/src/share/classes/sun/net/sdp/SdpSupport.java
-+--- openjdk.orig/jdk/src/share/classes/sun/net/sdp/SdpSupport.java 2014-01-28 19:02:26.000000000 +0100
-++++ openjdk/jdk/src/share/classes/sun/net/sdp/SdpSupport.java 2014-02-10 11:31:50.000000000 +0100
++--- openjdk.orig/jdk/src/share/classes/sun/net/sdp/SdpSupport.java 2014-04-12 01:23:06.000000000 +0200
+++++ openjdk/jdk/src/share/classes/sun/net/sdp/SdpSupport.java 2014-05-13 16:14:56.649091471 +0200
+@@ -76,6 +76,6 @@
+
+ static {
@@ -465,8 +6787,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk
+ }
+ }
+diff -Nur openjdk.orig/jdk/src/share/classes/sun/net/spi/DefaultProxySelector.java openjdk/jdk/src/share/classes/sun/net/spi/DefaultProxySelector.java
-+--- openjdk.orig/jdk/src/share/classes/sun/net/spi/DefaultProxySelector.java 2014-01-28 19:02:26.000000000 +0100
-++++ openjdk/jdk/src/share/classes/sun/net/spi/DefaultProxySelector.java 2014-02-10 11:31:50.000000000 +0100
++--- openjdk.orig/jdk/src/share/classes/sun/net/spi/DefaultProxySelector.java 2014-04-12 01:23:06.000000000 +0200
+++++ openjdk/jdk/src/share/classes/sun/net/spi/DefaultProxySelector.java 2014-05-13 16:14:56.649091471 +0200
+@@ -95,7 +95,7 @@
+ }});
+ if (b != null && b.booleanValue()) {
@@ -477,8 +6799,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk
+ }
+ }
+diff -Nur openjdk.orig/jdk/src/share/classes/sun/nio/ch/Util.java openjdk/jdk/src/share/classes/sun/nio/ch/Util.java
-+--- openjdk.orig/jdk/src/share/classes/sun/nio/ch/Util.java 2014-01-28 19:02:26.000000000 +0100
-++++ openjdk/jdk/src/share/classes/sun/nio/ch/Util.java 2014-02-10 11:31:50.000000000 +0100
++--- openjdk.orig/jdk/src/share/classes/sun/nio/ch/Util.java 2014-04-12 01:23:06.000000000 +0200
+++++ openjdk/jdk/src/share/classes/sun/nio/ch/Util.java 2014-05-13 16:14:56.649091471 +0200
+@@ -483,7 +483,7 @@
+ return;
+ loaded = true;
@@ -489,8 +6811,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk
+ .doPrivileged(new sun.security.action.LoadLibraryAction("nio"));
+ // IOUtil must be initialized; Its native methods are called from
+diff -Nur openjdk.orig/jdk/src/solaris/classes/sun/net/dns/ResolverConfigurationImpl.java openjdk/jdk/src/solaris/classes/sun/net/dns/ResolverConfigurationImpl.java
-+--- openjdk.orig/jdk/src/solaris/classes/sun/net/dns/ResolverConfigurationImpl.java 2014-01-28 19:02:26.000000000 +0100
-++++ openjdk/jdk/src/solaris/classes/sun/net/dns/ResolverConfigurationImpl.java 2014-02-10 11:31:50.000000000 +0100
++--- openjdk.orig/jdk/src/solaris/classes/sun/net/dns/ResolverConfigurationImpl.java 2014-04-12 01:23:06.000000000 +0200
+++++ openjdk/jdk/src/solaris/classes/sun/net/dns/ResolverConfigurationImpl.java 2014-05-13 16:14:56.649091471 +0200
+@@ -247,7 +247,7 @@
+
+ static {
@@ -501,8 +6823,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk
+
+ }
+diff -Nur openjdk.orig/jdk/src/solaris/native/sun/awt/awt_InputMethod.c openjdk/jdk/src/solaris/native/sun/awt/awt_InputMethod.c
-+--- openjdk.orig/jdk/src/solaris/native/sun/awt/awt_InputMethod.c 2014-01-28 19:02:26.000000000 +0100
-++++ openjdk/jdk/src/solaris/native/sun/awt/awt_InputMethod.c 2014-02-10 11:31:50.000000000 +0100
++--- openjdk.orig/jdk/src/solaris/native/sun/awt/awt_InputMethod.c 2014-04-12 01:23:06.000000000 +0200
+++++ openjdk/jdk/src/solaris/native/sun/awt/awt_InputMethod.c 2014-05-13 16:14:56.649091471 +0200
+@@ -246,7 +246,8 @@
+ if (wcs == NULL)
+ return NULL;
@@ -514,8 +6836,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk
+ mbs = (char *) malloc(n * sizeof(char));
+ if (mbs == NULL) {
+diff -Nur openjdk.orig/jdk/src/solaris/native/sun/xawt/XToolkit.c openjdk/jdk/src/solaris/native/sun/xawt/XToolkit.c
-+--- openjdk.orig/jdk/src/solaris/native/sun/xawt/XToolkit.c 2014-01-28 19:02:26.000000000 +0100
-++++ openjdk/jdk/src/solaris/native/sun/xawt/XToolkit.c 2014-02-10 11:31:50.000000000 +0100
++--- openjdk.orig/jdk/src/solaris/native/sun/xawt/XToolkit.c 2014-04-12 01:23:06.000000000 +0200
+++++ openjdk/jdk/src/solaris/native/sun/xawt/XToolkit.c 2014-05-13 16:14:56.649091471 +0200
+@@ -27,9 +27,6 @@
+ #include <X11/Xutil.h>
+ #include <X11/Xos.h>
@@ -553,8 +6875,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk
+ Window get_xawt_root_shell(JNIEnv *env) {
+ static jclass classXRootWindow = NULL;
+diff -Nur openjdk.orig/jdk/src/windows/classes/sun/net/dns/ResolverConfigurationImpl.java openjdk/jdk/src/windows/classes/sun/net/dns/ResolverConfigurationImpl.java
-+--- openjdk.orig/jdk/src/windows/classes/sun/net/dns/ResolverConfigurationImpl.java 2014-01-28 19:02:26.000000000 +0100
-++++ openjdk/jdk/src/windows/classes/sun/net/dns/ResolverConfigurationImpl.java 2014-02-10 11:31:50.000000000 +0100
++--- openjdk.orig/jdk/src/windows/classes/sun/net/dns/ResolverConfigurationImpl.java 2014-04-12 01:23:06.000000000 +0200
+++++ openjdk/jdk/src/windows/classes/sun/net/dns/ResolverConfigurationImpl.java 2014-05-13 16:14:56.649091471 +0200
+@@ -159,7 +159,7 @@
+
+ static {
@@ -565,8 +6887,8 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk
+
+ // start the address listener thread
+diff -Nur openjdk.orig/Makefile openjdk/Makefile
-+--- openjdk.orig/Makefile 2014-01-17 21:22:44.000000000 +0100
-++++ openjdk/Makefile 2014-02-10 11:31:50.000000000 +0100
++--- openjdk.orig/Makefile 2014-04-04 19:44:40.000000000 +0200
+++++ openjdk/Makefile 2014-05-13 16:14:56.649091471 +0200
+@@ -53,9 +53,7 @@
+ REL_JDK_DEBUG_IMAGE_DIR = ../$(OUTPUTDIR_BASENAME-debug)/$(JDK_IMAGE_DIRNAME)
+ REL_JDK_FASTDEBUG_IMAGE_DIR = ../$(OUTPUTDIR_BASENAME-fastdebug)/$(JDK_IMAGE_DIRNAME)
@@ -578,52 +6900,6 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk
+
+ ifndef JDK_TOPDIR
+ JDK_TOPDIR=$(TOPDIR)/jdk
-+diff -Nur openjdk-boot.orig/hotspot/agent/src/os/linux/Makefile openjdk-boot/hotspot/agent/src/os/linux/Makefile
-+--- openjdk-boot.orig/hotspot/agent/src/os/linux/Makefile 2014-02-20 19:51:45.000000000 +0100
-++++ openjdk-boot/hotspot/agent/src/os/linux/Makefile 2014-05-08 20:54:09.069009970 +0200
-+@@ -22,7 +22,7 @@
-+ #
-+ #
-+
-+-ARCH := $(shell if ([ `uname -m` = "ia64" ]) ; then echo ia64 ; elif ([ `uname -m` = "x86_64" ]) ; then echo amd64; elif ([ `uname -m` = "sparc64" ]) ; then echo sparc; else echo i386 ; fi )
-++JDKARCH := $(shell if ([ `uname -m` = "ia64" ]) ; then echo ia64 ; elif ([ `uname -m` = "x86_64" ]) ; then echo amd64; elif ([ `uname -m` = "sparc64" ]) ; then echo sparc; else echo i386 ; fi )
-+
-+ ifndef BUILD_GCC
-+ BUILD_GCC = gcc
-+@@ -45,9 +45,9 @@
-+
-+ LIBS = -lthread_db
-+
-+-CFLAGS = -c -fPIC -g -D_GNU_SOURCE -D_$(ARCH)_ $(if $(filter $(ARCH),alpha),,-D$(ARCH)) $(INCLUDES) -D_FILE_OFFSET_BITS=64
-++CFLAGS = -c -fPIC -g -D_GNU_SOURCE -D_$(JDKARCH)_ $(if $(filter $(JDKARCH),alpha),,-D$(JDKARCH)) $(INCLUDES) -D_FILE_OFFSET_BITS=64
-+
-+-LIBSA = $(ARCH)/libsaproc.so
-++LIBSA = $(JDKARCH)/libsaproc.so
-+
-+ all: $(LIBSA)
-+
-+@@ -74,17 +74,17 @@
-+ LFLAGS_LIBSA += $(LDFLAGS_HASH_STYLE)
-+
-+ $(LIBSA): $(OBJS) mapfile
-+- if [ ! -d $(ARCH) ] ; then mkdir $(ARCH) ; fi
-++ if [ ! -d $(JDKARCH) ] ; then mkdir $(JDKARCH) ; fi
-+ $(GCC) -shared $(LFLAGS_LIBSA) -o $(LIBSA) $(OBJS) $(LIBS)
-+
-+ test.o: test.c
-+- $(GCC) -c -o test.o -g -D_GNU_SOURCE -D_$(ARCH)_ $(if $(filter $(ARCH),alpha),,-D$(ARCH)) $(INCLUDES) test.c
-++ $(GCC) -c -o test.o -g -D_GNU_SOURCE -D_$(JDKARCH)_ $(if $(filter $(JDKARCH),alpha),,-D$(JDKARCH)) $(INCLUDES) test.c
-+
-+ test: test.o
-+- $(GCC) -o test test.o -L$(ARCH) -lsaproc $(LIBS)
-++ $(GCC) -o test test.o -L$(JDKARCH) -lsaproc $(LIBS)
-+
-+ clean:
-+ rm -rf $(LIBSA)
-+ rm -rf $(OBJS)
-+- rmdir $(ARCH)
-++ rmdir $(JDKARCH)
-+
+diff -Nur openjdk-boot.orig/hotspot/make/linux/makefiles/vm.make openjdk-boot/hotspot/make/linux/makefiles/vm.make
+--- openjdk-boot.orig/hotspot/make/linux/makefiles/vm.make 2014-02-20 19:51:45.000000000 +0100
++++ openjdk-boot/hotspot/make/linux/makefiles/vm.make 2014-05-01 20:03:03.677930438 +0200