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authorWaldemar Brodkorb <wbx@uclibc-ng.org>2016-05-18 18:41:24 +0200
committerWaldemar Brodkorb <wbx@uclibc-ng.org>2016-05-18 18:41:24 +0200
commit6a8ccc95528f5e86a8770ed15ce89609b5b3dee9 (patch)
treebbd4df35b4d4a6a8b00d7a5e61fb2668b850ad62 /libpthread/linuxthreads/pthread.c
parent398a27a5b323956344b4f831d892fed3bd9813c7 (diff)
remove linuxthreads.new, rename linuxthreads.old
Linuxthreads.new isn't really useful with the existence of NPTL/TLS for well supported architectures. There is no reason to use LT.new for ARM/MIPS or other architectures supporting NPTL/TLS. It is not available for noMMU architectures like Blackfin or FR-V. To simplify the live of the few uClibc-ng developers, LT.new is removed and LT.old is renamed to LT. LINUXTHREADS_OLD -> UCLIBC_HAS_LINUXTHREADS
Diffstat (limited to 'libpthread/linuxthreads/pthread.c')
-rw-r--r--libpthread/linuxthreads/pthread.c1318
1 files changed, 550 insertions, 768 deletions
diff --git a/libpthread/linuxthreads/pthread.c b/libpthread/linuxthreads/pthread.c
index 5dccd939f..00197b158 100644
--- a/libpthread/linuxthreads/pthread.c
+++ b/libpthread/linuxthreads/pthread.c
@@ -1,4 +1,3 @@
-
/* Linuxthreads - a simple clone()-based implementation of Posix */
/* threads for Linux. */
/* Copyright (C) 1996 Xavier Leroy (Xavier.Leroy@inria.fr) */
@@ -16,6 +15,7 @@
/* Thread creation, initialization, and basic low-level routines */
#include <errno.h>
+#include <netdb.h> /* for h_errno */
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
@@ -24,134 +24,176 @@
#include <fcntl.h>
#include <sys/wait.h>
#include <sys/resource.h>
-#include <sys/time.h>
#include "pthread.h"
#include "internals.h"
#include "spinlock.h"
#include "restart.h"
-#include "smp.h"
-#include <not-cancel.h>
+#include "debug.h" /* added to linuxthreads -StS */
-/* Sanity check. */
-#if !defined __SIGRTMIN || (__SIGRTMAX - __SIGRTMIN) < 3
-# error "This must not happen"
-#endif
-#ifndef __UCLIBC_HAS_TLS__
+/* Mods for uClibc: Some includes */
+#include <signal.h>
+#include <sys/types.h>
+#include <sys/syscall.h>
+
+libpthread_hidden_proto(waitpid)
+libpthread_hidden_proto(raise)
+
/* These variables are used by the setup code. */
extern int _errno;
extern int _h_errno;
-# if defined __UCLIBC_HAS_RESOLVER_SUPPORT__
-/* We need the global/static resolver state here. */
-# include <resolv.h>
-# undef _res
-extern struct __res_state *__resp;
-# endif
-#endif
-
-#ifdef __UCLIBC_HAS_TLS__
-
-/* We need only a few variables. */
-#define manager_thread __pthread_manager_threadp
-pthread_descr __pthread_manager_threadp attribute_hidden;
-
-#else
/* Descriptor of the initial thread */
struct _pthread_descr_struct __pthread_initial_thread = {
- .p_header.data.self = &__pthread_initial_thread,
- .p_nextlive = &__pthread_initial_thread,
- .p_prevlive = &__pthread_initial_thread,
- .p_tid = PTHREAD_THREADS_MAX,
- .p_lock = &__pthread_handles[0].h_lock,
- .p_start_args = PTHREAD_START_ARGS_INITIALIZER(NULL),
-#ifndef __UCLIBC_HAS_TLS__
- .p_errnop = &_errno,
- .p_h_errnop = &_h_errno,
-#endif
- .p_userstack = 1,
- .p_resume_count = __ATOMIC_INITIALIZER,
- .p_alloca_cutoff = __MAX_ALLOCA_CUTOFF
+ &__pthread_initial_thread, /* pthread_descr p_nextlive */
+ &__pthread_initial_thread, /* pthread_descr p_prevlive */
+ NULL, /* pthread_descr p_nextwaiting */
+ NULL, /* pthread_descr p_nextlock */
+ PTHREAD_THREADS_MAX, /* pthread_t p_tid */
+ 0, /* int p_pid */
+ 0, /* int p_priority */
+ &__pthread_handles[0].h_lock, /* struct _pthread_fastlock * p_lock */
+ 0, /* int p_signal */
+ NULL, /* sigjmp_buf * p_signal_buf */
+ NULL, /* sigjmp_buf * p_cancel_buf */
+ 0, /* char p_terminated */
+ 0, /* char p_detached */
+ 0, /* char p_exited */
+ NULL, /* void * p_retval */
+ 0, /* int p_retval */
+ NULL, /* pthread_descr p_joining */
+ NULL, /* struct _pthread_cleanup_buffer * p_cleanup */
+ 0, /* char p_cancelstate */
+ 0, /* char p_canceltype */
+ 0, /* char p_canceled */
+ &_errno, /* int *p_errnop */
+ 0, /* int p_errno */
+ &_h_errno, /* int *p_h_errnop */
+ 0, /* int p_h_errno */
+ NULL, /* char * p_in_sighandler */
+ 0, /* char p_sigwaiting */
+ PTHREAD_START_ARGS_INITIALIZER, /* struct pthread_start_args p_start_args */
+ {NULL}, /* void ** p_specific[PTHREAD_KEY_1STLEVEL_SIZE] */
+ {NULL}, /* void * p_libc_specific[_LIBC_TSD_KEY_N] */
+ 0, /* int p_userstack */
+ NULL, /* void * p_guardaddr */
+ 0, /* size_t p_guardsize */
+ &__pthread_initial_thread, /* pthread_descr p_self */
+ 0, /* Always index 0 */
+ 0, /* int p_report_events */
+ {{{0, }}, 0, NULL}, /* td_eventbuf_t p_eventbuf */
+ __ATOMIC_INITIALIZER, /* struct pthread_atomic p_resume_count */
+ 0, /* char p_woken_by_cancel */
+ 0, /* char p_condvar_avail */
+ 0, /* char p_sem_avail */
+ NULL, /* struct pthread_extricate_if *p_extricate */
+ NULL, /* pthread_readlock_info *p_readlock_list; */
+ NULL, /* pthread_readlock_info *p_readlock_free; */
+ 0 /* int p_untracked_readlock_count; */
+#ifdef __UCLIBC_HAS_XLOCALE__
+ ,
+ &__global_locale_data, /* __locale_t locale; */
+#endif /* __UCLIBC_HAS_XLOCALE__ */
};
/* Descriptor of the manager thread; none of this is used but the error
variables, the p_pid and p_priority fields,
and the address for identification. */
-
#define manager_thread (&__pthread_manager_thread)
struct _pthread_descr_struct __pthread_manager_thread = {
- .p_header.data.self = &__pthread_manager_thread,
- .p_header.data.multiple_threads = 1,
- .p_lock = &__pthread_handles[1].h_lock,
- .p_start_args = PTHREAD_START_ARGS_INITIALIZER(__pthread_manager),
-#ifndef __UCLIBC_HAS_TLS__
- .p_errnop = &__pthread_manager_thread.p_errno,
-#endif
- .p_nr = 1,
- .p_resume_count = __ATOMIC_INITIALIZER,
- .p_alloca_cutoff = PTHREAD_STACK_MIN / 4
+ NULL, /* pthread_descr p_nextlive */
+ NULL, /* pthread_descr p_prevlive */
+ NULL, /* pthread_descr p_nextwaiting */
+ NULL, /* pthread_descr p_nextlock */
+ 0, /* int p_tid */
+ 0, /* int p_pid */
+ 0, /* int p_priority */
+ &__pthread_handles[1].h_lock, /* struct _pthread_fastlock * p_lock */
+ 0, /* int p_signal */
+ NULL, /* sigjmp_buf * p_signal_buf */
+ NULL, /* sigjmp_buf * p_cancel_buf */
+ 0, /* char p_terminated */
+ 0, /* char p_detached */
+ 0, /* char p_exited */
+ NULL, /* void * p_retval */
+ 0, /* int p_retval */
+ NULL, /* pthread_descr p_joining */
+ NULL, /* struct _pthread_cleanup_buffer * p_cleanup */
+ 0, /* char p_cancelstate */
+ 0, /* char p_canceltype */
+ 0, /* char p_canceled */
+ &__pthread_manager_thread.p_errno, /* int *p_errnop */
+ 0, /* int p_errno */
+ NULL, /* int *p_h_errnop */
+ 0, /* int p_h_errno */
+ NULL, /* char * p_in_sighandler */
+ 0, /* char p_sigwaiting */
+ PTHREAD_START_ARGS_INITIALIZER, /* struct pthread_start_args p_start_args */
+ {NULL}, /* void ** p_specific[PTHREAD_KEY_1STLEVEL_SIZE] */
+ {NULL}, /* void * p_libc_specific[_LIBC_TSD_KEY_N] */
+ 0, /* int p_userstack */
+ NULL, /* void * p_guardaddr */
+ 0, /* size_t p_guardsize */
+ &__pthread_manager_thread, /* pthread_descr p_self */
+ 1, /* Always index 1 */
+ 0, /* int p_report_events */
+ {{{0, }}, 0, NULL}, /* td_eventbuf_t p_eventbuf */
+ __ATOMIC_INITIALIZER, /* struct pthread_atomic p_resume_count */
+ 0, /* char p_woken_by_cancel */
+ 0, /* char p_condvar_avail */
+ 0, /* char p_sem_avail */
+ NULL, /* struct pthread_extricate_if *p_extricate */
+ NULL, /* pthread_readlock_info *p_readlock_list; */
+ NULL, /* pthread_readlock_info *p_readlock_free; */
+ 0 /* int p_untracked_readlock_count; */
+#ifdef __UCLIBC_HAS_XLOCALE__
+ ,
+ &__global_locale_data, /* __locale_t locale; */
+#endif /* __UCLIBC_HAS_XLOCALE__ */
};
-#endif
/* Pointer to the main thread (the father of the thread manager thread) */
/* Originally, this is the initial thread, but this changes after fork() */
-#ifdef __UCLIBC_HAS_TLS__
-pthread_descr __pthread_main_thread;
-#else
pthread_descr __pthread_main_thread = &__pthread_initial_thread;
-#endif
/* Limit between the stack of the initial thread (above) and the
stacks of other threads (below). Aligned on a STACK_SIZE boundary. */
-char *__pthread_initial_thread_bos;
+char *__pthread_initial_thread_bos = NULL;
+
+#ifndef __ARCH_USE_MMU__
+/* See nommu notes in internals.h and pthread_initialize() below. */
+char *__pthread_initial_thread_tos = NULL;
+char *__pthread_initial_thread_mid = NULL;
+#endif /* __ARCH_USE_MMU__ */
/* File descriptor for sending requests to the thread manager. */
/* Initially -1, meaning that the thread manager is not running. */
int __pthread_manager_request = -1;
-int __pthread_multiple_threads attribute_hidden;
-
/* Other end of the pipe for sending requests to the thread manager. */
int __pthread_manager_reader;
/* Limits of the thread manager stack */
-char *__pthread_manager_thread_bos;
-char *__pthread_manager_thread_tos;
+char *__pthread_manager_thread_bos = NULL;
+char *__pthread_manager_thread_tos = NULL;
/* For process-wide exit() */
-int __pthread_exit_requested;
-int __pthread_exit_code;
-
-/* Maximum stack size. */
-size_t __pthread_max_stacksize;
-
-/* Nozero if the machine has more than one processor. */
-int __pthread_smp_kernel;
-
-
-#if !__ASSUME_REALTIME_SIGNALS
-/* Pointers that select new or old suspend/resume functions
- based on availability of rt signals. */
-
-void (*__pthread_restart)(pthread_descr) = __pthread_restart_old;
-void (*__pthread_suspend)(pthread_descr) = __pthread_suspend_old;
-int (*__pthread_timedsuspend)(pthread_descr, const struct timespec *) = __pthread_timedsuspend_old;
-#endif /* __ASSUME_REALTIME_SIGNALS */
+int __pthread_exit_requested = 0;
+int __pthread_exit_code = 0;
/* Communicate relevant LinuxThreads constants to gdb */
const int __pthread_threads_max = PTHREAD_THREADS_MAX;
const int __pthread_sizeof_handle = sizeof(struct pthread_handle_struct);
-const int __pthread_offsetof_descr = offsetof(struct pthread_handle_struct,
- h_descr);
+const int __pthread_offsetof_descr = offsetof(struct pthread_handle_struct, h_descr);
const int __pthread_offsetof_pid = offsetof(struct _pthread_descr_struct,
p_pid);
const int __linuxthreads_pthread_sizeof_descr
@@ -162,53 +204,72 @@ const int __linuxthreads_initial_report_events;
const char __linuxthreads_version[] = VERSION;
/* Forward declarations */
-
static void pthread_onexit_process(int retcode, void *arg);
-#ifndef HAVE_Z_NODELETE
-static void pthread_atexit_process(void *arg, int retcode);
-static void pthread_atexit_retcode(void *arg, int retcode);
-#endif
static void pthread_handle_sigcancel(int sig);
static void pthread_handle_sigrestart(int sig);
static void pthread_handle_sigdebug(int sig);
+int __pthread_timedsuspend_new(pthread_descr self, const struct timespec *abstime);
/* Signal numbers used for the communication.
In these variables we keep track of the used variables. If the
platform does not support any real-time signals we will define the
values to some unreasonable value which will signal failing of all
the functions below. */
+#ifndef __NR_rt_sigaction
+static int current_rtmin = -1;
+static int current_rtmax = -1;
+int __pthread_sig_restart = SIGUSR1;
+int __pthread_sig_cancel = SIGUSR2;
+int __pthread_sig_debug;
+#else
+
+#if __SIGRTMAX - __SIGRTMIN >= 3
+static int current_rtmin = __SIGRTMIN + 3;
+static int current_rtmax = __SIGRTMAX;
int __pthread_sig_restart = __SIGRTMIN;
int __pthread_sig_cancel = __SIGRTMIN + 1;
int __pthread_sig_debug = __SIGRTMIN + 2;
+void (*__pthread_restart)(pthread_descr) = __pthread_restart_new;
+void (*__pthread_suspend)(pthread_descr) = __pthread_wait_for_restart_signal;
+int (*__pthread_timedsuspend)(pthread_descr, const struct timespec *) = __pthread_timedsuspend_new;
+#else
+static int current_rtmin = __SIGRTMIN;
+static int current_rtmax = __SIGRTMAX;
+int __pthread_sig_restart = SIGUSR1;
+int __pthread_sig_cancel = SIGUSR2;
+int __pthread_sig_debug;
+void (*__pthread_restart)(pthread_descr) = __pthread_restart_old;
+void (*__pthread_suspend)(pthread_descr) = __pthread_suspend_old;
+int (*__pthread_timedsuspend)(pthread_descr, const struct timespec *) = __pthread_timedsuspend_old;
-extern int __libc_current_sigrtmin_private (void);
-
-#if !__ASSUME_REALTIME_SIGNALS
-static int rtsigs_initialized;
+#endif
-static void
-init_rtsigs (void)
+/* Return number of available real-time signal with highest priority. */
+int __libc_current_sigrtmin (void)
{
- if (rtsigs_initialized)
- return;
+ return current_rtmin;
+}
- if (__libc_current_sigrtmin_private () == -1)
- {
- __pthread_sig_restart = SIGUSR1;
- __pthread_sig_cancel = SIGUSR2;
- __pthread_sig_debug = 0;
- }
- else
- {
- __pthread_restart = __pthread_restart_new;
- __pthread_suspend = __pthread_wait_for_restart_signal;
- __pthread_timedsuspend = __pthread_timedsuspend_new;
- }
+/* Return number of available real-time signal with lowest priority. */
+int __libc_current_sigrtmax (void)
+{
+ return current_rtmax;
+}
- rtsigs_initialized = 1;
+#if 0
+/* Allocate real-time signal with highest/lowest available
+ priority. Please note that we don't use a lock since we assume
+ this function to be called at program start. */
+int __libc_allocate_rtsig (int high);
+int __libc_allocate_rtsig (int high)
+{
+ if (current_rtmin == -1 || current_rtmin > current_rtmax)
+ /* We don't have anymore signal available. */
+ return -1;
+ return high ? current_rtmin++ : current_rtmax--;
}
#endif
-
+#endif
/* Initialize the pthread library.
Initialization is split in two functions:
@@ -219,14 +280,40 @@ init_rtsigs (void)
static void pthread_initialize(void) __attribute__((constructor));
-#ifndef HAVE_Z_NODELETE
-extern void *__dso_handle __attribute__ ((weak));
-#endif
-
-
-#if defined __UCLIBC_HAS_TLS__ && !defined SHARED
-extern void __libc_setup_tls (size_t tcbsize, size_t tcbalign);
-#endif
+libpthread_hidden_proto(pthread_attr_destroy)
+libpthread_hidden_proto(pthread_attr_init)
+libpthread_hidden_proto(pthread_attr_getdetachstate)
+libpthread_hidden_proto(pthread_attr_setdetachstate)
+libpthread_hidden_proto(pthread_attr_getinheritsched)
+libpthread_hidden_proto(pthread_attr_setinheritsched)
+libpthread_hidden_proto(pthread_attr_setschedparam)
+libpthread_hidden_proto(pthread_attr_getschedparam)
+libpthread_hidden_proto(pthread_attr_getschedpolicy)
+libpthread_hidden_proto(pthread_attr_setschedpolicy)
+libpthread_hidden_proto(pthread_attr_getscope)
+libpthread_hidden_proto(pthread_attr_setscope)
+
+libpthread_hidden_proto(pthread_exit)
+
+libpthread_hidden_proto(pthread_equal)
+libpthread_hidden_proto(pthread_self)
+libpthread_hidden_proto(pthread_getschedparam)
+libpthread_hidden_proto(pthread_setschedparam)
+
+libpthread_hidden_proto(pthread_setcancelstate)
+libpthread_hidden_proto(pthread_setcanceltype)
+libpthread_hidden_proto(_pthread_cleanup_push_defer)
+libpthread_hidden_proto(_pthread_cleanup_pop_restore)
+
+libpthread_hidden_proto(pthread_cond_broadcast)
+libpthread_hidden_proto(pthread_cond_destroy)
+libpthread_hidden_proto(pthread_cond_init)
+libpthread_hidden_proto(pthread_cond_signal)
+libpthread_hidden_proto(pthread_cond_wait)
+libpthread_hidden_proto(pthread_cond_timedwait)
+
+libpthread_hidden_proto(pthread_condattr_destroy)
+libpthread_hidden_proto(pthread_condattr_init)
struct pthread_functions __pthread_functions =
{
@@ -235,49 +322,53 @@ struct pthread_functions __pthread_functions =
.ptr_pthread_internal_tsd_get = __pthread_internal_tsd_get,
.ptr_pthread_internal_tsd_address = __pthread_internal_tsd_address,
#endif
+/*
.ptr_pthread_fork = __pthread_fork,
- .ptr_pthread_attr_destroy = __pthread_attr_destroy,
- .ptr_pthread_attr_init = __pthread_attr_init,
- .ptr_pthread_attr_getdetachstate = __pthread_attr_getdetachstate,
- .ptr_pthread_attr_setdetachstate = __pthread_attr_setdetachstate,
- .ptr_pthread_attr_getinheritsched = __pthread_attr_getinheritsched,
- .ptr_pthread_attr_setinheritsched = __pthread_attr_setinheritsched,
- .ptr_pthread_attr_getschedparam = __pthread_attr_getschedparam,
- .ptr_pthread_attr_setschedparam = __pthread_attr_setschedparam,
- .ptr_pthread_attr_getschedpolicy = __pthread_attr_getschedpolicy,
- .ptr_pthread_attr_setschedpolicy = __pthread_attr_setschedpolicy,
- .ptr_pthread_attr_getscope = __pthread_attr_getscope,
- .ptr_pthread_attr_setscope = __pthread_attr_setscope,
- .ptr_pthread_condattr_destroy = __pthread_condattr_destroy,
- .ptr_pthread_condattr_init = __pthread_condattr_init,
- .ptr_pthread_cond_broadcast = __pthread_cond_broadcast,
- .ptr_pthread_cond_destroy = __pthread_cond_destroy,
- .ptr_pthread_cond_init = __pthread_cond_init,
- .ptr_pthread_cond_signal = __pthread_cond_signal,
- .ptr_pthread_cond_wait = __pthread_cond_wait,
- .ptr_pthread_cond_timedwait = __pthread_cond_timedwait,
- .ptr_pthread_equal = __pthread_equal,
- .ptr___pthread_exit = __pthread_exit,
- .ptr_pthread_getschedparam = __pthread_getschedparam,
- .ptr_pthread_setschedparam = __pthread_setschedparam,
+*/
+ .ptr_pthread_attr_destroy = pthread_attr_destroy,
+ .ptr_pthread_attr_init = pthread_attr_init,
+ .ptr_pthread_attr_getdetachstate = pthread_attr_getdetachstate,
+ .ptr_pthread_attr_setdetachstate = pthread_attr_setdetachstate,
+ .ptr_pthread_attr_getinheritsched = pthread_attr_getinheritsched,
+ .ptr_pthread_attr_setinheritsched = pthread_attr_setinheritsched,
+ .ptr_pthread_attr_getschedparam = pthread_attr_getschedparam,
+ .ptr_pthread_attr_setschedparam = pthread_attr_setschedparam,
+ .ptr_pthread_attr_getschedpolicy = pthread_attr_getschedpolicy,
+ .ptr_pthread_attr_setschedpolicy = pthread_attr_setschedpolicy,
+ .ptr_pthread_attr_getscope = pthread_attr_getscope,
+ .ptr_pthread_attr_setscope = pthread_attr_setscope,
+ .ptr_pthread_condattr_destroy = pthread_condattr_destroy,
+ .ptr_pthread_condattr_init = pthread_condattr_init,
+ .ptr_pthread_cond_broadcast = pthread_cond_broadcast,
+ .ptr_pthread_cond_destroy = pthread_cond_destroy,
+ .ptr_pthread_cond_init = pthread_cond_init,
+ .ptr_pthread_cond_signal = pthread_cond_signal,
+ .ptr_pthread_cond_wait = pthread_cond_wait,
+ .ptr_pthread_cond_timedwait = pthread_cond_timedwait,
+ .ptr_pthread_equal = pthread_equal,
+ .ptr___pthread_exit = pthread_exit,
+ .ptr_pthread_getschedparam = pthread_getschedparam,
+ .ptr_pthread_setschedparam = pthread_setschedparam,
.ptr_pthread_mutex_destroy = __pthread_mutex_destroy,
.ptr_pthread_mutex_init = __pthread_mutex_init,
.ptr_pthread_mutex_lock = __pthread_mutex_lock,
.ptr_pthread_mutex_trylock = __pthread_mutex_trylock,
.ptr_pthread_mutex_unlock = __pthread_mutex_unlock,
- .ptr_pthread_self = __pthread_self,
- .ptr_pthread_setcancelstate = __pthread_setcancelstate,
- .ptr_pthread_setcanceltype = __pthread_setcanceltype,
- .ptr_pthread_do_exit = __pthread_do_exit,
- .ptr_pthread_thread_self = __pthread_thread_self,
- .ptr_pthread_cleanup_upto = __pthread_cleanup_upto,
- .ptr_pthread_sigaction = __pthread_sigaction,
- .ptr_pthread_sigwait = __pthread_sigwait,
- .ptr_pthread_raise = __pthread_raise,
+ .ptr_pthread_self = pthread_self,
+ .ptr_pthread_setcancelstate = pthread_setcancelstate,
+ .ptr_pthread_setcanceltype = pthread_setcanceltype,
+/*
+ .ptr_pthread_do_exit = pthread_do_exit,
+ .ptr_pthread_thread_self = pthread_thread_self,
+ .ptr_pthread_cleanup_upto = pthread_cleanup_upto,
+ .ptr_pthread_sigaction = pthread_sigaction,
+ .ptr_pthread_sigwait = pthread_sigwait,
+ .ptr_pthread_raise = pthread_raise,
.ptr__pthread_cleanup_push = _pthread_cleanup_push,
- .ptr__pthread_cleanup_push_defer = _pthread_cleanup_push_defer,
.ptr__pthread_cleanup_pop = _pthread_cleanup_pop,
- .ptr__pthread_cleanup_pop_restore = _pthread_cleanup_pop_restore,
+*/
+ .ptr__pthread_cleanup_push_defer = __pthread_cleanup_push_defer,
+ .ptr__pthread_cleanup_pop_restore = __pthread_cleanup_pop_restore
};
#ifdef SHARED
# define ptr_pthread_functions &__pthread_functions
@@ -287,224 +378,28 @@ struct pthread_functions __pthread_functions =
static int *__libc_multiple_threads_ptr;
-/* Do some minimal initialization which has to be done during the
- startup of the C library. */
-void
-__pthread_initialize_minimal(void)
+ /* Do some minimal initialization which has to be done during the
+ startup of the C library. */
+void __pthread_initialize_minimal(void)
{
-#ifdef __UCLIBC_HAS_TLS__
- pthread_descr self;
-
- /* First of all init __pthread_handles[0] and [1] if needed. */
-# if __LT_SPINLOCK_INIT != 0
- __pthread_handles[0].h_lock = __LOCK_INITIALIZER;
- __pthread_handles[1].h_lock = __LOCK_INITIALIZER;
-# endif
-# ifndef SHARED
- /* Unlike in the dynamically linked case the dynamic linker has not
- taken care of initializing the TLS data structures. */
- __libc_setup_tls (TLS_TCB_SIZE, TLS_TCB_ALIGN);
-# elif !defined __UCLIBC_HAS_TLS__
- if (__builtin_expect (GL(dl_tls_dtv_slotinfo_list) == NULL, 0))
- {
- tcbhead_t *tcbp;
-
- /* There is no actual TLS being used, so the thread register
- was not initialized in the dynamic linker. */
-
- /* We need to install special hooks so that the malloc and memalign
- calls in _dl_tls_setup and _dl_allocate_tls won't cause full
- malloc initialization that will try to set up its thread state. */
-
- extern void __libc_malloc_pthread_startup (bool first_time);
- __libc_malloc_pthread_startup (true);
-
- if (__builtin_expect (_dl_tls_setup (), 0)
- || __builtin_expect ((tcbp = _dl_allocate_tls (NULL)) == NULL, 0))
- {
- static const char msg[] = "\
-cannot allocate TLS data structures for initial thread\n";
- TEMP_FAILURE_RETRY (write_not_cancel (STDERR_FILENO,
- msg, sizeof msg - 1));
- abort ();
- }
- const char *lossage = TLS_INIT_TP (tcbp, 0);
- if (__builtin_expect (lossage != NULL, 0))
- {
- static const char msg[] = "cannot set up thread-local storage: ";
- const char nl = '\n';
- TEMP_FAILURE_RETRY (write_not_cancel (STDERR_FILENO,
- msg, sizeof msg - 1));
- TEMP_FAILURE_RETRY (write_not_cancel (STDERR_FILENO,
- lossage, strlen (lossage)));
- TEMP_FAILURE_RETRY (write_not_cancel (STDERR_FILENO, &nl, 1));
- }
-
- /* Though it was allocated with libc's malloc, that was done without
- the user's __malloc_hook installed. A later realloc that uses
- the hooks might not work with that block from the plain malloc.
- So we record this block as unfreeable just as the dynamic linker
- does when it allocates the DTV before the libc malloc exists. */
- GL(dl_initial_dtv) = GET_DTV (tcbp);
-
- __libc_malloc_pthread_startup (false);
- }
-# endif
-
- self = THREAD_SELF;
-
- /* The memory for the thread descriptor was allocated elsewhere as
- part of the TLS allocation. We have to initialize the data
- structure by hand. This initialization must mirror the struct
- definition above. */
- self->p_nextlive = self->p_prevlive = self;
- self->p_tid = PTHREAD_THREADS_MAX;
- self->p_lock = &__pthread_handles[0].h_lock;
-# ifndef __UCLIBC_HAS_TLS__
- self->p_errnop = &_errno;
- self->p_h_errnop = &_h_errno;
-# endif
- /* self->p_start_args need not be initialized, it's all zero. */
- self->p_userstack = 1;
-# if __LT_SPINLOCK_INIT != 0
- self->p_resume_count = (struct pthread_atomic) __ATOMIC_INITIALIZER;
-# endif
- self->p_alloca_cutoff = __MAX_ALLOCA_CUTOFF;
-
- /* Another variable which points to the thread descriptor. */
- __pthread_main_thread = self;
-
- /* And fill in the pointer the the thread __pthread_handles array. */
- __pthread_handles[0].h_descr = self;
-
-#else /* __UCLIBC_HAS_TLS__ */
-
- /* First of all init __pthread_handles[0] and [1]. */
-# if __LT_SPINLOCK_INIT != 0
- __pthread_handles[0].h_lock = __LOCK_INITIALIZER;
- __pthread_handles[1].h_lock = __LOCK_INITIALIZER;
-# endif
- __pthread_handles[0].h_descr = &__pthread_initial_thread;
- __pthread_handles[1].h_descr = &__pthread_manager_thread;
-
- /* If we have special thread_self processing, initialize that for the
- main thread now. */
-# ifdef INIT_THREAD_SELF
- INIT_THREAD_SELF(&__pthread_initial_thread, 0);
-# endif
-#endif
-
-#if HP_TIMING_AVAIL
-# ifdef __UCLIBC_HAS_TLS__
- self->p_cpuclock_offset = GL(dl_cpuclock_offset);
-# else
- __pthread_initial_thread.p_cpuclock_offset = GL(dl_cpuclock_offset);
-# endif
+ /* If we have special thread_self processing, initialize
+ * that for the main thread now. */
+#ifdef INIT_THREAD_SELF
+ INIT_THREAD_SELF(&__pthread_initial_thread, 0);
#endif
- __libc_multiple_threads_ptr = __libc_pthread_init (ptr_pthread_functions);
+ __libc_multiple_threads_ptr = __libc_pthread_init (ptr_pthread_functions);
}
-void
-__pthread_init_max_stacksize(void)
-{
- struct rlimit limit;
- size_t max_stack;
-
- getrlimit(RLIMIT_STACK, &limit);
-#ifdef FLOATING_STACKS
- if (limit.rlim_cur == RLIM_INFINITY)
- limit.rlim_cur = ARCH_STACK_MAX_SIZE;
-# ifdef NEED_SEPARATE_REGISTER_STACK
- max_stack = limit.rlim_cur / 2;
-# else
- max_stack = limit.rlim_cur;
-# endif
-#else
- /* Play with the stack size limit to make sure that no stack ever grows
- beyond STACK_SIZE minus one page (to act as a guard page). */
-# ifdef NEED_SEPARATE_REGISTER_STACK
- /* STACK_SIZE bytes hold both the main stack and register backing
- store. The rlimit value applies to each individually. */
- max_stack = STACK_SIZE/2 - __getpagesize ();
-# else
- max_stack = STACK_SIZE - __getpagesize();
-# endif
- if (limit.rlim_cur > max_stack) {
- limit.rlim_cur = max_stack;
- setrlimit(RLIMIT_STACK, &limit);
- }
-#endif
- __pthread_max_stacksize = max_stack;
- if (max_stack / 4 < __MAX_ALLOCA_CUTOFF)
- {
-#ifdef __UCLIBC_HAS_TLS__
- pthread_descr self = THREAD_SELF;
- self->p_alloca_cutoff = max_stack / 4;
-#else
- __pthread_initial_thread.p_alloca_cutoff = max_stack / 4;
-#endif
- }
-}
-
-#if defined SHARED && defined __UCLIBC_HAS_TLS__
-# ifdef __UCLIBC_HAS_TLS__
-/* When using __thread for this, we do it in libc so as not
- to give libpthread its own TLS segment just for this. */
-extern void **__libc_dl_error_tsd (void) __attribute__ ((const));
-# else
-static void ** __attribute__ ((const))
-__libc_dl_error_tsd (void)
-{
- return &thread_self ()->p_libc_specific[_LIBC_TSD_KEY_DL_ERROR];
-}
-# endif
-#endif
-
-#ifdef __UCLIBC_HAS_TLS__
-static __inline__ void __attribute__((always_inline))
-init_one_static_tls (pthread_descr descr, struct link_map *map)
-{
-# if defined(TLS_TCB_AT_TP)
- dtv_t *dtv = GET_DTV (descr);
- void *dest = (char *) descr - map->l_tls_offset;
-# elif defined(TLS_DTV_AT_TP)
- dtv_t *dtv = GET_DTV ((pthread_descr) ((char *) descr + TLS_PRE_TCB_SIZE));
- void *dest = (char *) descr + map->l_tls_offset + TLS_PRE_TCB_SIZE;
-# else
-# error "Either TLS_TCB_AT_TP or TLS_DTV_AT_TP must be defined"
-# endif
-
- /* Fill in the DTV slot so that a later LD/GD access will find it. */
- dtv[map->l_tls_modid].pointer.val = dest;
- dtv[map->l_tls_modid].pointer.is_static = true;
-
- /* Initialize the memory. */
- memset (mempcpy (dest, map->l_tls_initimage, map->l_tls_initimage_size),
- '\0', map->l_tls_blocksize - map->l_tls_initimage_size);
-}
-
-static void
-__pthread_init_static_tls (struct link_map *map)
-{
- size_t i;
-
- for (i = 0; i < PTHREAD_THREADS_MAX; ++i)
- if (__pthread_handles[i].h_descr != NULL && i != 1)
- {
- __pthread_lock (&__pthread_handles[i].h_lock, NULL);
- if (__pthread_handles[i].h_descr != NULL)
- init_one_static_tls (__pthread_handles[i].h_descr, map);
- __pthread_unlock (&__pthread_handles[i].h_lock);
- }
-}
-#endif
-
static void pthread_initialize(void)
{
struct sigaction sa;
sigset_t mask;
+#ifdef __ARCH_USE_MMU__
+ struct rlimit limit;
+ rlim_t max_stack;
+#endif
/* If already done (e.g. by a constructor called earlier!), bail out */
if (__pthread_initial_thread_bos != NULL) return;
@@ -512,44 +407,70 @@ static void pthread_initialize(void)
/* Test if compare-and-swap is available */
__pthread_has_cas = compare_and_swap_is_available();
#endif
-#ifdef FLOATING_STACKS
- /* We don't need to know the bottom of the stack. Give the pointer some
- value to signal that initialization happened. */
- __pthread_initial_thread_bos = (void *) -1l;
-#else
- /* Determine stack size limits . */
- __pthread_init_max_stacksize ();
-# ifdef _STACK_GROWS_UP
- /* The initial thread already has all the stack it needs */
- __pthread_initial_thread_bos = (char *)
- ((long)CURRENT_STACK_FRAME &~ (STACK_SIZE - 1));
-# else
/* For the initial stack, reserve at least STACK_SIZE bytes of stack
below the current stack address, and align that on a
STACK_SIZE boundary. */
__pthread_initial_thread_bos =
(char *)(((long)CURRENT_STACK_FRAME - 2 * STACK_SIZE) & ~(STACK_SIZE - 1));
-# endif
-#endif
-#ifdef __UCLIBC_HAS_TLS__
- /* Update the descriptor for the initial thread. */
- THREAD_SETMEM (((pthread_descr) NULL), p_pid, __getpid());
-# if defined __UCLIBC_HAS_RESOLVER_SUPPORT__
- /* Likewise for the resolver state _res. */
- THREAD_SETMEM (((pthread_descr) NULL), p_resp, __resp);
-# endif
-#else
/* Update the descriptor for the initial thread. */
- __pthread_initial_thread.p_pid = __getpid();
-# if defined __UCLIBC_HAS_RESOLVER_SUPPORT__
- /* Likewise for the resolver state _res. */
- __pthread_initial_thread.p_resp = __resp;
-# endif
-#endif
-#if !__ASSUME_REALTIME_SIGNALS
- /* Initialize real-time signals. */
- init_rtsigs ();
+ __pthread_initial_thread.p_pid = getpid();
+ /* If we have special thread_self processing, initialize that for the
+ main thread now. */
+#ifdef INIT_THREAD_SELF
+ INIT_THREAD_SELF(&__pthread_initial_thread, 0);
#endif
+ /* The errno/h_errno variable of the main thread are the global ones. */
+ __pthread_initial_thread.p_errnop = &_errno;
+ __pthread_initial_thread.p_h_errnop = &_h_errno;
+
+#ifdef __UCLIBC_HAS_XLOCALE__
+ /* The locale of the main thread is the current locale in use. */
+ __pthread_initial_thread.locale = __curlocale_var;
+#endif /* __UCLIBC_HAS_XLOCALE__ */
+
+ { /* uClibc-specific stdio initialization for threads. */
+ FILE *fp;
+
+ _stdio_user_locking = 0; /* 2 if threading not initialized */
+ for (fp = _stdio_openlist; fp != NULL; fp = fp->__nextopen) {
+ if (fp->__user_locking != 1) {
+ fp->__user_locking = 0;
+ }
+ }
+ }
+
+ /* Play with the stack size limit to make sure that no stack ever grows
+ beyond STACK_SIZE minus two pages (one page for the thread descriptor
+ immediately beyond, and one page to act as a guard page). */
+
+#ifdef __ARCH_USE_MMU__
+ /* We cannot allocate a huge chunk of memory to mmap all thread stacks later
+ * on a non-MMU system. Thus, we don't need the rlimit either. -StS */
+ getrlimit(RLIMIT_STACK, &limit);
+ max_stack = STACK_SIZE - 2 * getpagesize();
+ if (limit.rlim_cur > max_stack) {
+ limit.rlim_cur = max_stack;
+ setrlimit(RLIMIT_STACK, &limit);
+ }
+#else
+ /* For non-MMU, the initial thread stack can reside anywhere in memory.
+ * We don't have a way of knowing where the kernel started things -- top
+ * or bottom (well, that isn't exactly true, but the solution is fairly
+ * complex and error prone). All we can determine here is an address
+ * that lies within that stack. Save that address as a reference so that
+ * as other thread stacks are created, we can adjust the estimated bounds
+ * of the initial thread's stack appropriately.
+ *
+ * This checking is handled in NOMMU_INITIAL_THREAD_BOUNDS(), so see that
+ * for a few more details.
+ */
+ __pthread_initial_thread_mid = CURRENT_STACK_FRAME;
+ __pthread_initial_thread_tos = (char *) -1;
+ __pthread_initial_thread_bos = (char *) 1; /* set it non-zero so we know we have been here */
+ PDEBUG("initial thread stack bounds: bos=%p, tos=%p\n",
+ __pthread_initial_thread_bos, __pthread_initial_thread_tos);
+#endif /* __ARCH_USE_MMU__ */
+
/* Setup signal handlers for the initial thread.
Since signal handlers are shared between threads, these settings
will be inherited by all other threads. */
@@ -560,9 +481,9 @@ static void pthread_initialize(void)
sigaddset(&sa.sa_mask, __pthread_sig_restart);
__libc_sigaction(__pthread_sig_cancel, &sa, NULL);
if (__pthread_sig_debug > 0) {
- sa.sa_handler = pthread_handle_sigdebug;
- __sigemptyset(&sa.sa_mask);
- __libc_sigaction(__pthread_sig_debug, &sa, NULL);
+ sa.sa_handler = pthread_handle_sigdebug;
+ __sigemptyset(&sa.sa_mask);
+ __libc_sigaction(__pthread_sig_debug, &sa, NULL);
}
/* Initially, block __pthread_sig_restart. Will be unblocked on demand. */
__sigemptyset(&mask);
@@ -574,48 +495,11 @@ static void pthread_initialize(void)
sigprocmask(SIG_UNBLOCK, &mask, NULL);
/* Register an exit function to kill all other threads. */
/* Do it early so that user-registered atexit functions are called
- before pthread_*exit_process. */
-#ifndef HAVE_Z_NODELETE
- if (__builtin_expect (&__dso_handle != NULL, 1))
- __cxa_atexit ((void (*) (void *)) pthread_atexit_process, NULL,
- __dso_handle);
- else
-#endif
- __on_exit (pthread_onexit_process, NULL);
- /* How many processors. */
- __pthread_smp_kernel = is_smp_system ();
-
-#if defined SHARED && defined __UCLIBC_HAS_TLS__
- /* Transfer the old value from the dynamic linker's internal location. */
- *__libc_dl_error_tsd () = *(*GL(dl_error_catch_tsd)) ();
- GL(dl_error_catch_tsd) = &__libc_dl_error_tsd;
-
- /* Make __rtld_lock_{,un}lock_recursive use pthread_mutex_{,un}lock,
- keep the lock count from the ld.so implementation. */
- GL(dl_rtld_lock_recursive) = (void *) __pthread_mutex_lock;
- GL(dl_rtld_unlock_recursive) = (void *) __pthread_mutex_unlock;
- unsigned int rtld_lock_count = GL(dl_load_lock).mutex.__m_count;
- GL(dl_load_lock).mutex.__m_count = 0;
- while (rtld_lock_count-- > 0)
- __pthread_mutex_lock (&GL(dl_load_lock).mutex);
-#endif
-
-#ifdef __UCLIBC_HAS_TLS__
- GL(dl_init_static_tls) = &__pthread_init_static_tls;
-#endif
-
- /* uClibc-specific stdio initialization for threads. */
- {
- FILE *fp;
- _stdio_user_locking = 0; /* 2 if threading not initialized */
- for (fp = _stdio_openlist; fp != NULL; fp = fp->__nextopen) {
- if (fp->__user_locking != 1) {
- fp->__user_locking = 0;
- }
- }
- }
+ before pthread_onexit_process. */
+ on_exit(pthread_onexit_process, NULL);
}
+void __pthread_initialize(void);
void __pthread_initialize(void)
{
pthread_initialize();
@@ -625,27 +509,11 @@ int __pthread_initialize_manager(void)
{
int manager_pipe[2];
int pid;
- struct pthread_request request;
int report_events;
- pthread_descr mgr;
-#ifdef __UCLIBC_HAS_TLS__
- tcbhead_t *tcbp;
-#endif
+ struct pthread_request request;
- __pthread_multiple_threads = 1;
-#if TLS_MULTIPLE_THREADS_IN_TCB || !defined __UCLIBC_HAS_TLS__ || !TLS_DTV_AT_TP
- __pthread_main_thread->p_multiple_threads = 1;
-#endif
*__libc_multiple_threads_ptr = 1;
-#ifndef HAVE_Z_NODELETE
- if (__builtin_expect (&__dso_handle != NULL, 1))
- __cxa_atexit ((void (*) (void *)) pthread_atexit_retcode, NULL,
- __dso_handle);
-#endif
-
- if (__pthread_max_stacksize == 0)
- __pthread_init_max_stacksize ();
/* If basic initialization not done yet (e.g. we're called from a
constructor run before our constructor), do it now */
if (__pthread_initial_thread_bos == NULL) pthread_initialize();
@@ -654,59 +522,25 @@ int __pthread_initialize_manager(void)
if (__pthread_manager_thread_bos == NULL) return -1;
__pthread_manager_thread_tos =
__pthread_manager_thread_bos + THREAD_MANAGER_STACK_SIZE;
+
+ /* On non-MMU systems we make sure that the initial thread bounds don't overlap
+ * with the manager stack frame */
+ NOMMU_INITIAL_THREAD_BOUNDS(__pthread_manager_thread_tos,__pthread_manager_thread_bos);
+ PDEBUG("manager stack: size=%ld, bos=%p, tos=%p\n", THREAD_MANAGER_STACK_SIZE,
+ __pthread_manager_thread_bos, __pthread_manager_thread_tos);
+#if 0
+ PDEBUG("initial stack: estimate bos=%p, tos=%p\n",
+ __pthread_initial_thread_bos, __pthread_initial_thread_tos);
+#endif
+
/* Setup pipe to communicate with thread manager */
if (pipe(manager_pipe) == -1) {
free(__pthread_manager_thread_bos);
return -1;
}
-
-#ifdef __UCLIBC_HAS_TLS__
- /* Allocate memory for the thread descriptor and the dtv. */
- tcbp = _dl_allocate_tls (NULL);
- if (tcbp == NULL) {
- free(__pthread_manager_thread_bos);
- close_not_cancel(manager_pipe[0]);
- close_not_cancel(manager_pipe[1]);
- return -1;
- }
-
-# if defined(TLS_TCB_AT_TP)
- mgr = (pthread_descr) tcbp;
-# elif defined(TLS_DTV_AT_TP)
- /* pthread_descr is located right below tcbhead_t which _dl_allocate_tls
- returns. */
- mgr = (pthread_descr) ((char *) tcbp - TLS_PRE_TCB_SIZE);
-# endif
- __pthread_handles[1].h_descr = manager_thread = mgr;
-
- /* Initialize the descriptor. */
-#if !defined __UCLIBC_HAS_TLS__ || !TLS_DTV_AT_TP
- mgr->p_header.data.tcb = tcbp;
- mgr->p_header.data.self = mgr;
- mgr->p_header.data.multiple_threads = 1;
-#elif TLS_MULTIPLE_THREADS_IN_TCB
- mgr->p_multiple_threads = 1;
-#endif
- mgr->p_lock = &__pthread_handles[1].h_lock;
-# ifndef __UCLIBC_HAS_TLS__
- mgr->p_errnop = &mgr->p_errno;
-# endif
- mgr->p_start_args = (struct pthread_start_args) PTHREAD_START_ARGS_INITIALIZER(__pthread_manager);
- mgr->p_nr = 1;
-# if __LT_SPINLOCK_INIT != 0
- self->p_resume_count = (struct pthread_atomic) __ATOMIC_INITIALIZER;
-# endif
- mgr->p_alloca_cutoff = PTHREAD_STACK_MIN / 4;
-#else
- mgr = &__pthread_manager_thread;
-#endif
-
- __pthread_manager_request = manager_pipe[1]; /* writing end */
- __pthread_manager_reader = manager_pipe[0]; /* reading end */
-
/* Start the thread manager */
pid = 0;
-#ifdef __UCLIBC_HAS_TLS__
+#if defined(USE_TLS) && USE_TLS
if (__linuxthreads_initial_report_events != 0)
THREAD_SETMEM (((pthread_descr) NULL), p_report_events,
__linuxthreads_initial_report_events);
@@ -723,36 +557,25 @@ int __pthread_initialize_manager(void)
the manager thread. */
int idx = __td_eventword (TD_CREATE);
uint32_t mask = __td_eventmask (TD_CREATE);
- uint32_t event_bits;
-#ifdef __UCLIBC_HAS_TLS__
- event_bits = THREAD_GETMEM_NC (((pthread_descr) NULL),
- p_eventbuf.eventmask.event_bits[idx]);
-#else
- event_bits = __pthread_initial_thread.p_eventbuf.eventmask.event_bits[idx];
-#endif
-
- if ((mask & (__pthread_threads_events.event_bits[idx] | event_bits))
+ if ((mask & (__pthread_threads_events.event_bits[idx]
+ | __pthread_initial_thread.p_eventbuf.eventmask.event_bits[idx]))
!= 0)
{
- __pthread_lock(mgr->p_lock, NULL);
-#ifdef NEED_SEPARATE_REGISTER_STACK
+ __pthread_lock(__pthread_manager_thread.p_lock, NULL);
+
+#ifdef __ia64__
pid = __clone2(__pthread_manager_event,
- (void **) __pthread_manager_thread_bos,
- THREAD_MANAGER_STACK_SIZE,
- CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND | CLONE_SYSVSEM,
- mgr);
-#elif defined _STACK_GROWS_UP
- pid = __clone(__pthread_manager_event,
- (void **) __pthread_manager_thread_bos,
- CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND | CLONE_SYSVSEM,
- mgr);
+ (void **) __pthread_manager_thread_tos,
+ THREAD_MANAGER_STACK_SIZE,
+ CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND,
+ (void *)(long)manager_pipe[0]);
#else
- pid = __clone(__pthread_manager_event,
+ pid = clone(__pthread_manager_event,
(void **) __pthread_manager_thread_tos,
- CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND | CLONE_SYSVSEM,
- mgr);
+ CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND,
+ (void *)(long)manager_pipe[0]);
#endif
if (pid != -1)
@@ -761,48 +584,46 @@ int __pthread_initialize_manager(void)
the newly created thread's data structure. We cannot let
the new thread do this since we don't know whether it was
already scheduled when we send the event. */
- mgr->p_eventbuf.eventdata = mgr;
- mgr->p_eventbuf.eventnum = TD_CREATE;
- __pthread_last_event = mgr;
- mgr->p_tid = 2* PTHREAD_THREADS_MAX + 1;
- mgr->p_pid = pid;
+ __pthread_manager_thread.p_eventbuf.eventdata =
+ &__pthread_manager_thread;
+ __pthread_manager_thread.p_eventbuf.eventnum = TD_CREATE;
+ __pthread_last_event = &__pthread_manager_thread;
+ __pthread_manager_thread.p_tid = 2* PTHREAD_THREADS_MAX + 1;
+ __pthread_manager_thread.p_pid = pid;
/* Now call the function which signals the event. */
__linuxthreads_create_event ();
}
-
/* Now restart the thread. */
- __pthread_unlock(mgr->p_lock);
+ __pthread_unlock(__pthread_manager_thread.p_lock);
}
}
- if (__builtin_expect (pid, 0) == 0)
- {
-#ifdef NEED_SEPARATE_REGISTER_STACK
- pid = __clone2(__pthread_manager, (void **) __pthread_manager_thread_bos,
- THREAD_MANAGER_STACK_SIZE,
- CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND | CLONE_SYSVSEM, mgr);
-#elif defined _STACK_GROWS_UP
- pid = __clone(__pthread_manager, (void **) __pthread_manager_thread_bos,
- CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND | CLONE_SYSVSEM, mgr);
+ if (pid == 0) {
+#ifdef __ia64__
+ pid = __clone2(__pthread_manager, (void **) __pthread_manager_thread_tos,
+ THREAD_MANAGER_STACK_SIZE,
+ CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND,
+ (void *)(long)manager_pipe[0]);
#else
- pid = __clone(__pthread_manager, (void **) __pthread_manager_thread_tos,
- CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND | CLONE_SYSVSEM, mgr);
-#endif
- }
- if (__builtin_expect (pid, 0) == -1) {
-#ifdef __UCLIBC_HAS_TLS__
- _dl_deallocate_tls (tcbp, true);
+ pid = clone(__pthread_manager, (void **) __pthread_manager_thread_tos,
+ CLONE_VM | CLONE_FS | CLONE_FILES | CLONE_SIGHAND,
+ (void *)(long)manager_pipe[0]);
#endif
+ }
+ if (pid == -1) {
free(__pthread_manager_thread_bos);
- close_not_cancel(manager_pipe[0]);
- close_not_cancel(manager_pipe[1]);
+ close(manager_pipe[0]);
+ close(manager_pipe[1]);
return -1;
}
- mgr->p_tid = 2* PTHREAD_THREADS_MAX + 1;
- mgr->p_pid = pid;
+ __pthread_manager_request = manager_pipe[1]; /* writing end */
+ __pthread_manager_reader = manager_pipe[0]; /* reading end */
+ __pthread_manager_thread.p_tid = 2* PTHREAD_THREADS_MAX + 1;
+ __pthread_manager_thread.p_pid = pid;
+
/* Make gdb aware of new thread manager */
- if (__builtin_expect (__pthread_threads_debug, 0) && __pthread_sig_debug > 0)
+ if (__pthread_threads_debug && __pthread_sig_debug > 0)
{
raise(__pthread_sig_debug);
/* We suspend ourself and gdb will wake us up when it is
@@ -810,21 +631,21 @@ int __pthread_initialize_manager(void)
__pthread_wait_for_restart_signal(thread_self());
}
/* Synchronize debugging of the thread manager */
+ PDEBUG("send REQ_DEBUG to manager thread\n");
request.req_kind = REQ_DEBUG;
- TEMP_FAILURE_RETRY(write_not_cancel(__pthread_manager_request,
- (char *) &request, sizeof(request)));
+ TEMP_FAILURE_RETRY(write(__pthread_manager_request,
+ (char *) &request, sizeof(request)));
return 0;
}
/* Thread creation */
-int __pthread_create(pthread_t *thread, const pthread_attr_t *attr,
+int pthread_create(pthread_t *thread, const pthread_attr_t *attr,
void * (*start_routine)(void *), void *arg)
{
pthread_descr self = thread_self();
struct pthread_request request;
- int retval;
- if (__builtin_expect (__pthread_manager_request, 0) < 0) {
+ if (__pthread_manager_request < 0) {
if (__pthread_initialize_manager() < 0) return EAGAIN;
}
request.req_thread = self;
@@ -833,35 +654,31 @@ int __pthread_create(pthread_t *thread, const pthread_attr_t *attr,
request.req_args.create.fn = start_routine;
request.req_args.create.arg = arg;
sigprocmask(SIG_SETMASK, NULL, &request.req_args.create.mask);
- TEMP_FAILURE_RETRY(write_not_cancel(__pthread_manager_request,
- (char *) &request, sizeof(request)));
+ PDEBUG("write REQ_CREATE to manager thread\n");
+ TEMP_FAILURE_RETRY(write(__pthread_manager_request,
+ (char *) &request, sizeof(request)));
+ PDEBUG("before suspend(self)\n");
suspend(self);
- retval = THREAD_GETMEM(self, p_retcode);
- if (__builtin_expect (retval, 0) == 0)
+ PDEBUG("after suspend(self)\n");
+ if (THREAD_GETMEM(self, p_retcode) == 0)
*thread = (pthread_t) THREAD_GETMEM(self, p_retval);
- return retval;
+ return THREAD_GETMEM(self, p_retcode);
}
-strong_alias (__pthread_create, pthread_create)
/* Simple operations on thread identifiers */
-pthread_descr __pthread_thread_self(void)
-{
- return thread_self();
-}
-
-pthread_t __pthread_self(void)
+pthread_t pthread_self(void)
{
pthread_descr self = thread_self();
return THREAD_GETMEM(self, p_tid);
}
-strong_alias (__pthread_self, pthread_self)
+libpthread_hidden_def (pthread_self)
-int __pthread_equal(pthread_t thread1, pthread_t thread2)
+int pthread_equal(pthread_t thread1, pthread_t thread2)
{
return thread1 == thread2;
}
-strong_alias (__pthread_equal, pthread_equal)
+libpthread_hidden_def (pthread_equal)
/* Helper function for thread_self in the case of user-provided stacks */
@@ -875,64 +692,55 @@ pthread_descr __pthread_find_self(void)
/* __pthread_handles[0] is the initial thread, __pthread_handles[1] is
the manager threads handled specially in thread_self(), so start at 2 */
h = __pthread_handles + 2;
-# ifdef _STACK_GROWS_UP
- while (! (sp >= (char *) h->h_descr && sp < (char *) h->h_descr->p_guardaddr)) h++;
-# else
while (! (sp <= (char *) h->h_descr && sp >= h->h_bottom)) h++;
-# endif
+
+#ifdef DEBUG_PT
+ if (h->h_descr == NULL) {
+ printf("*** %s ERROR descriptor is NULL!!!!! ***\n\n", __FUNCTION__);
+ _exit(1);
+ }
+#endif
+
return h->h_descr;
}
-
#else
-pthread_descr __pthread_self_stack(void)
+static pthread_descr thread_self_stack(void)
{
- char *sp = CURRENT_STACK_FRAME;
- pthread_handle h;
-
- if (sp >= __pthread_manager_thread_bos && sp < __pthread_manager_thread_tos)
- return manager_thread;
- h = __pthread_handles + 2;
-# ifdef __UCLIBC_HAS_TLS__
-# ifdef _STACK_GROWS_UP
- while (h->h_descr == NULL
- || ! (sp >= h->h_descr->p_stackaddr && sp < h->h_descr->p_guardaddr))
- h++;
-# else
- while (h->h_descr == NULL
- || ! (sp <= (char *) h->h_descr->p_stackaddr && sp >= h->h_bottom))
- h++;
-# endif
+ char *sp = CURRENT_STACK_FRAME;
+ pthread_handle h;
+
+ if (sp >= __pthread_manager_thread_bos && sp < __pthread_manager_thread_tos)
+ return manager_thread;
+ h = __pthread_handles + 2;
+# if defined(USE_TLS) && USE_TLS
+ while (h->h_descr == NULL
+ || ! (sp <= (char *) h->h_descr->p_stackaddr && sp >= h->h_bottom))
+ h++;
# else
-# ifdef _STACK_GROWS_UP
- while (! (sp >= (char *) h->h_descr && sp < h->h_descr->p_guardaddr))
- h++;
-# else
- while (! (sp <= (char *) h->h_descr && sp >= h->h_bottom))
- h++;
-# endif
+ while (! (sp <= (char *) h->h_descr && sp >= h->h_bottom))
+ h++;
# endif
- return h->h_descr;
+ return h->h_descr;
}
#endif
/* Thread scheduling */
-int __pthread_setschedparam(pthread_t thread, int policy,
- const struct sched_param *param)
+int pthread_setschedparam(pthread_t thread, int policy,
+ const struct sched_param *param)
{
pthread_handle handle = thread_handle(thread);
pthread_descr th;
__pthread_lock(&handle->h_lock, NULL);
- if (__builtin_expect (invalid_handle(handle, thread), 0)) {
+ if (invalid_handle(handle, thread)) {
__pthread_unlock(&handle->h_lock);
return ESRCH;
}
th = handle->h_descr;
- if (__builtin_expect (__sched_setscheduler(th->p_pid, policy, param) == -1,
- 0)) {
+ if (sched_setscheduler(th->p_pid, policy, param) == -1) {
__pthread_unlock(&handle->h_lock);
return errno;
}
@@ -942,85 +750,53 @@ int __pthread_setschedparam(pthread_t thread, int policy,
__pthread_manager_adjust_prio(th->p_priority);
return 0;
}
-strong_alias (__pthread_setschedparam, pthread_setschedparam)
+libpthread_hidden_def(pthread_setschedparam)
-int __pthread_getschedparam(pthread_t thread, int *policy,
- struct sched_param *param)
+int pthread_getschedparam(pthread_t thread, int *policy,
+ struct sched_param *param)
{
pthread_handle handle = thread_handle(thread);
int pid, pol;
__pthread_lock(&handle->h_lock, NULL);
- if (__builtin_expect (invalid_handle(handle, thread), 0)) {
+ if (invalid_handle(handle, thread)) {
__pthread_unlock(&handle->h_lock);
return ESRCH;
}
pid = handle->h_descr->p_pid;
__pthread_unlock(&handle->h_lock);
- pol = __sched_getscheduler(pid);
- if (__builtin_expect (pol, 0) == -1) return errno;
- if (__sched_getparam(pid, param) == -1) return errno;
+ pol = sched_getscheduler(pid);
+ if (pol == -1) return errno;
+ if (sched_getparam(pid, param) == -1) return errno;
*policy = pol;
return 0;
}
-strong_alias (__pthread_getschedparam, pthread_getschedparam)
+libpthread_hidden_def(pthread_getschedparam)
/* Process-wide exit() request */
-static void pthread_onexit_process(int retcode, void *arg)
+static void pthread_onexit_process(int retcode, void *arg attribute_unused)
{
- if (__builtin_expect (__pthread_manager_request, 0) >= 0) {
struct pthread_request request;
pthread_descr self = thread_self();
- /* Make sure we come back here after suspend(), in case we entered
- from a signal handler. */
- THREAD_SETMEM(self, p_signal_jmp, NULL);
-
- request.req_thread = self;
- request.req_kind = REQ_PROCESS_EXIT;
- request.req_args.exit.code = retcode;
- TEMP_FAILURE_RETRY(write_not_cancel(__pthread_manager_request,
- (char *) &request, sizeof(request)));
- suspend(self);
- /* Main thread should accumulate times for thread manager and its
- children, so that timings for main thread account for all threads. */
- if (self == __pthread_main_thread)
- {
-#ifdef __UCLIBC_HAS_TLS__
- waitpid(manager_thread->p_pid, NULL, __WCLONE);
-#else
- waitpid(__pthread_manager_thread.p_pid, NULL, __WCLONE);
-#endif
- /* Since all threads have been asynchronously terminated
- (possibly holding locks), free cannot be used any more.
- For mtrace, we'd like to print something though. */
- /* #ifdef __UCLIBC_HAS_TLS__
- tcbhead_t *tcbp = (tcbhead_t *) manager_thread;
- # if defined(TLS_DTV_AT_TP)
- tcbp = (tcbhead_t) ((char *) tcbp + TLS_PRE_TCB_SIZE);
- # endif
- _dl_deallocate_tls (tcbp, true);
- #endif
- free (__pthread_manager_thread_bos); */
- __pthread_manager_thread_bos = __pthread_manager_thread_tos = NULL;
- }
- }
-}
-
-#ifndef HAVE_Z_NODELETE
-static int __pthread_atexit_retcode;
-
-static void pthread_atexit_process(void *arg, int retcode)
-{
- pthread_onexit_process (retcode ?: __pthread_atexit_retcode, arg);
-}
-
-static void pthread_atexit_retcode(void *arg, int retcode)
-{
- __pthread_atexit_retcode = retcode;
+ if (__pthread_manager_request >= 0) {
+ request.req_thread = self;
+ request.req_kind = REQ_PROCESS_EXIT;
+ request.req_args.exit.code = retcode;
+ TEMP_FAILURE_RETRY(write(__pthread_manager_request,
+ (char *) &request, sizeof(request)));
+ suspend(self);
+ /* Main thread should accumulate times for thread manager and its
+ children, so that timings for main thread account for all threads. */
+ if (self == __pthread_main_thread) {
+ waitpid(__pthread_manager_thread.p_pid, NULL, __WCLONE);
+ /* Since all threads have been asynchronously terminated
+ * (possibly holding locks), free cannot be used any more. */
+ __pthread_manager_thread_bos = __pthread_manager_thread_tos = NULL;
+ }
+ }
}
-#endif
/* The handler for the RESTART signal just records the signal received
in the thread descriptor, and optionally performs a siglongjmp
@@ -1028,10 +804,10 @@ static void pthread_atexit_retcode(void *arg, int retcode)
static void pthread_handle_sigrestart(int sig)
{
- pthread_descr self = check_thread_self();
- THREAD_SETMEM(self, p_signal, sig);
- if (THREAD_GETMEM(self, p_signal_jmp) != NULL)
- siglongjmp(*THREAD_GETMEM(self, p_signal_jmp), 1);
+ pthread_descr self = thread_self();
+ THREAD_SETMEM(self, p_signal, sig);
+ if (THREAD_GETMEM(self, p_signal_jmp) != NULL)
+ siglongjmp(*THREAD_GETMEM(self, p_signal_jmp), 1);
}
/* The handler for the CANCEL signal checks for cancellation
@@ -1041,20 +817,39 @@ static void pthread_handle_sigrestart(int sig)
static void pthread_handle_sigcancel(int sig)
{
- pthread_descr self = check_thread_self();
+ pthread_descr self = thread_self();
sigjmp_buf * jmpbuf;
- if (self == manager_thread)
+
+ if (self == &__pthread_manager_thread)
{
+#ifdef THREAD_SELF
+ /* A new thread might get a cancel signal before it is fully
+ initialized, so that the thread register might still point to the
+ manager thread. Double check that this is really the manager
+ thread. */
+ pthread_descr real_self = thread_self_stack();
+ if (real_self == &__pthread_manager_thread)
+ {
+ __pthread_manager_sighandler(sig);
+ return;
+ }
+ /* Oops, thread_self() isn't working yet.. */
+ self = real_self;
+# ifdef INIT_THREAD_SELF
+ INIT_THREAD_SELF(self, self->p_nr);
+# endif
+#else
__pthread_manager_sighandler(sig);
return;
+#endif
}
if (__builtin_expect (__pthread_exit_requested, 0)) {
/* Main thread should accumulate times for thread manager and its
children, so that timings for main thread account for all threads. */
if (self == __pthread_main_thread) {
-#ifdef __UCLIBC_HAS_TLS__
- waitpid(manager_thread->p_pid, NULL, __WCLONE);
+#if defined(USE_TLS) && USE_TLS
+ waitpid(__pthread_manager_thread->p_pid, NULL, __WCLONE);
#else
waitpid(__pthread_manager_thread.p_pid, NULL, __WCLONE);
#endif
@@ -1083,7 +878,7 @@ static void pthread_handle_sigcancel(int sig)
know what it is specifically done for. In the current implementation,
the thread manager simply discards it. */
-static void pthread_handle_sigdebug(int sig)
+static void pthread_handle_sigdebug(int sig attribute_unused)
{
/* Nothing */
}
@@ -1103,39 +898,20 @@ void __pthread_reset_main_thread(void)
free(__pthread_manager_thread_bos);
__pthread_manager_thread_bos = __pthread_manager_thread_tos = NULL;
/* Close the two ends of the pipe */
- close_not_cancel(__pthread_manager_request);
- close_not_cancel(__pthread_manager_reader);
+ close(__pthread_manager_request);
+ close(__pthread_manager_reader);
__pthread_manager_request = __pthread_manager_reader = -1;
}
/* Update the pid of the main thread */
- THREAD_SETMEM(self, p_pid, __getpid());
+ THREAD_SETMEM(self, p_pid, getpid());
/* Make the forked thread the main thread */
__pthread_main_thread = self;
THREAD_SETMEM(self, p_nextlive, self);
THREAD_SETMEM(self, p_prevlive, self);
-#ifndef __UCLIBC_HAS_TLS__
/* Now this thread modifies the global variables. */
THREAD_SETMEM(self, p_errnop, &_errno);
THREAD_SETMEM(self, p_h_errnop, &_h_errno);
-# if defined __UCLIBC_HAS_RESOLVER_SUPPORT__
- THREAD_SETMEM(self, p_resp, __resp);
-# endif
-#endif
-
-#ifndef FLOATING_STACKS
- /* This is to undo the setrlimit call in __pthread_init_max_stacksize.
- XXX This can be wrong if the user set the limit during the run. */
- {
- struct rlimit limit;
- if (getrlimit (RLIMIT_STACK, &limit) == 0
- && limit.rlim_cur != limit.rlim_max)
- {
- limit.rlim_cur = limit.rlim_max;
- setrlimit(RLIMIT_STACK, &limit);
- }
- }
-#endif
}
/* Process-wide exec() request */
@@ -1148,7 +924,6 @@ void __pthread_kill_other_threads_np(void)
/* Make current thread the main thread in case the calling thread
changes its mind, does not exec(), and creates new threads instead. */
__pthread_reset_main_thread();
-
/* Reset the signal handlers behaviour for the signals the
implementation uses since this would be passed to the new
process. */
@@ -1179,24 +954,24 @@ int __pthread_getconcurrency(void)
}
weak_alias (__pthread_getconcurrency, pthread_getconcurrency)
+
/* Primitives for controlling thread execution */
void __pthread_wait_for_restart_signal(pthread_descr self)
{
- sigset_t mask;
+ sigset_t mask;
- sigprocmask(SIG_SETMASK, NULL, &mask); /* Get current signal mask */
- sigdelset(&mask, __pthread_sig_restart); /* Unblock the restart signal */
- THREAD_SETMEM(self, p_signal, 0);
- do {
- __pthread_sigsuspend(&mask); /* Wait for signal. Must not be a
- cancellation point. */
- } while (THREAD_GETMEM(self, p_signal) !=__pthread_sig_restart);
+ sigprocmask(SIG_SETMASK, NULL, &mask); /* Get current signal mask */
+ sigdelset(&mask, __pthread_sig_restart); /* Unblock the restart signal */
+ THREAD_SETMEM(self, p_signal, 0);
+ do {
+ sigsuspend(&mask); /* Wait for signal */
+ } while (THREAD_GETMEM(self, p_signal) !=__pthread_sig_restart);
- READ_MEMORY_BARRIER(); /* See comment in __pthread_restart_new */
+ READ_MEMORY_BARRIER(); /* See comment in __pthread_restart_new */
}
-#if !__ASSUME_REALTIME_SIGNALS
+#ifndef __NR_rt_sigaction
/* The _old variants are for 2.0 and early 2.1 kernels which don't have RT
signals.
On these kernels, we use SIGUSR1 and SIGUSR2 for restart and cancellation.
@@ -1206,14 +981,14 @@ void __pthread_wait_for_restart_signal(pthread_descr self)
void __pthread_restart_old(pthread_descr th)
{
- if (pthread_atomic_increment(&th->p_resume_count) == -1)
- kill(th->p_pid, __pthread_sig_restart);
+ if (atomic_increment(&th->p_resume_count) == -1)
+ kill(th->p_pid, __pthread_sig_restart);
}
void __pthread_suspend_old(pthread_descr self)
{
- if (pthread_atomic_decrement(&self->p_resume_count) <= 0)
- __pthread_wait_for_restart_signal(self);
+ if (atomic_decrement(&self->p_resume_count) <= 0)
+ __pthread_wait_for_restart_signal(self);
}
int
@@ -1223,7 +998,7 @@ __pthread_timedsuspend_old(pthread_descr self, const struct timespec *abstime)
int was_signalled = 0;
sigjmp_buf jmpbuf;
- if (pthread_atomic_decrement(&self->p_resume_count) == 0) {
+ if (atomic_decrement(&self->p_resume_count) == 0) {
/* Set up a longjmp handler for the restart signal, unblock
the signal and sleep. */
@@ -1240,7 +1015,7 @@ __pthread_timedsuspend_old(pthread_descr self, const struct timespec *abstime)
struct timespec reltime;
/* Compute a time offset relative to now. */
- __gettimeofday (&now, NULL);
+ gettimeofday (&now, NULL);
reltime.tv_nsec = abstime->tv_nsec - now.tv_usec * 1000;
reltime.tv_sec = abstime->tv_sec - now.tv_sec;
if (reltime.tv_nsec < 0) {
@@ -1280,9 +1055,9 @@ __pthread_timedsuspend_old(pthread_descr self, const struct timespec *abstime)
being delivered. */
if (!was_signalled) {
- if (pthread_atomic_increment(&self->p_resume_count) != -1) {
+ if (atomic_increment(&self->p_resume_count) != -1) {
__pthread_wait_for_restart_signal(self);
- pthread_atomic_decrement(&self->p_resume_count); /* should be zero now! */
+ atomic_decrement(&self->p_resume_count); /* should be zero now! */
/* woke spontaneously and consumed restart signal */
return 1;
}
@@ -1292,92 +1067,99 @@ __pthread_timedsuspend_old(pthread_descr self, const struct timespec *abstime)
/* woken due to restart signal */
return 1;
}
-#endif /* __ASSUME_REALTIME_SIGNALS */
+#endif /* __NR_rt_sigaction */
+
+#ifdef __NR_rt_sigaction
void __pthread_restart_new(pthread_descr th)
{
- /* The barrier is proabably not needed, in which case it still documents
- our assumptions. The intent is to commit previous writes to shared
- memory so the woken thread will have a consistent view. Complementary
- read barriers are present to the suspend functions. */
- WRITE_MEMORY_BARRIER();
- kill(th->p_pid, __pthread_sig_restart);
+ /* The barrier is proabably not needed, in which case it still documents
+ our assumptions. The intent is to commit previous writes to shared
+ memory so the woken thread will have a consistent view. Complementary
+ read barriers are present to the suspend functions. */
+ WRITE_MEMORY_BARRIER();
+ kill(th->p_pid, __pthread_sig_restart);
}
-/* There is no __pthread_suspend_new because it would just
- be a wasteful wrapper for __pthread_wait_for_restart_signal */
-
-int
-__pthread_timedsuspend_new(pthread_descr self, const struct timespec *abstime)
+int __pthread_timedsuspend_new(pthread_descr self, const struct timespec *abstime)
{
- sigset_t unblock, initial_mask;
- int was_signalled = 0;
- sigjmp_buf jmpbuf;
+ sigset_t unblock, initial_mask;
+ int was_signalled = 0;
+ sigjmp_buf jmpbuf;
- if (sigsetjmp(jmpbuf, 1) == 0) {
- THREAD_SETMEM(self, p_signal_jmp, &jmpbuf);
- THREAD_SETMEM(self, p_signal, 0);
- /* Unblock the restart signal */
- __sigemptyset(&unblock);
- sigaddset(&unblock, __pthread_sig_restart);
- sigprocmask(SIG_UNBLOCK, &unblock, &initial_mask);
-
- while (1) {
- struct timeval now;
- struct timespec reltime;
-
- /* Compute a time offset relative to now. */
- __gettimeofday (&now, NULL);
- reltime.tv_nsec = abstime->tv_nsec - now.tv_usec * 1000;
- reltime.tv_sec = abstime->tv_sec - now.tv_sec;
- if (reltime.tv_nsec < 0) {
- reltime.tv_nsec += 1000000000;
- reltime.tv_sec -= 1;
- }
+ if (sigsetjmp(jmpbuf, 1) == 0) {
+ THREAD_SETMEM(self, p_signal_jmp, &jmpbuf);
+ THREAD_SETMEM(self, p_signal, 0);
+ /* Unblock the restart signal */
+ __sigemptyset(&unblock);
+ sigaddset(&unblock, __pthread_sig_restart);
+ sigprocmask(SIG_UNBLOCK, &unblock, &initial_mask);
+
+ while (1) {
+ struct timeval now;
+ struct timespec reltime;
+
+ /* Compute a time offset relative to now. */
+ gettimeofday (&now, NULL);
+ reltime.tv_nsec = abstime->tv_nsec - now.tv_usec * 1000;
+ reltime.tv_sec = abstime->tv_sec - now.tv_sec;
+ if (reltime.tv_nsec < 0) {
+ reltime.tv_nsec += 1000000000;
+ reltime.tv_sec -= 1;
+ }
- /* Sleep for the required duration. If woken by a signal,
- resume waiting as required by Single Unix Specification. */
- if (reltime.tv_sec < 0 || nanosleep(&reltime, NULL) == 0)
- break;
- }
+ /* Sleep for the required duration. If woken by a signal,
+ resume waiting as required by Single Unix Specification. */
+ if (reltime.tv_sec < 0 || nanosleep(&reltime, NULL) == 0)
+ break;
+ }
- /* Block the restart signal again */
- sigprocmask(SIG_SETMASK, &initial_mask, NULL);
- was_signalled = 0;
- } else {
- was_signalled = 1;
- }
- THREAD_SETMEM(self, p_signal_jmp, NULL);
+ /* Block the restart signal again */
+ sigprocmask(SIG_SETMASK, &initial_mask, NULL);
+ was_signalled = 0;
+ } else {
+ was_signalled = 1;
+ }
+ THREAD_SETMEM(self, p_signal_jmp, NULL);
- /* Now was_signalled is true if we exited the above code
- due to the delivery of a restart signal. In that case,
- everything is cool. We have been removed from whatever
- we were waiting on by the other thread, and consumed its signal.
+ /* Now was_signalled is true if we exited the above code
+ due to the delivery of a restart signal. In that case,
+ everything is cool. We have been removed from whatever
+ we were waiting on by the other thread, and consumed its signal.
- Otherwise we this thread woke up spontaneously, or due to a signal other
- than restart. This is an ambiguous case that must be resolved by
- the caller; the thread is still eligible for a restart wakeup
- so there is a race. */
+ Otherwise we this thread woke up spontaneously, or due to a signal other
+ than restart. This is an ambiguous case that must be resolved by
+ the caller; the thread is still eligible for a restart wakeup
+ so there is a race. */
- READ_MEMORY_BARRIER(); /* See comment in __pthread_restart_new */
- return was_signalled;
+ READ_MEMORY_BARRIER(); /* See comment in __pthread_restart_new */
+ return was_signalled;
}
-
+#endif
/* Debugging aid */
-#ifdef DEBUG
+#ifdef DEBUG_PT
#include <stdarg.h>
-void __pthread_message(const char * fmt, ...)
+void __pthread_message(char * fmt, ...)
{
char buffer[1024];
va_list args;
- sprintf(buffer, "%05d : ", __getpid());
+ sprintf(buffer, "%05d : ", getpid());
va_start(args, fmt);
vsnprintf(buffer + 8, sizeof(buffer) - 8, fmt, args);
va_end(args);
- TEMP_FAILURE_RETRY(write_not_cancel(2, buffer, strlen(buffer)));
+ TEMP_FAILURE_RETRY(write(2, buffer, strlen(buffer)));
}
#endif
+
+
+#ifndef __PIC__
+/* We need a hook to force the cancellation wrappers to be linked in when
+ static libpthread is used. */
+extern const char __pthread_provide_wrappers;
+static const char *const __pthread_require_wrappers =
+ &__pthread_provide_wrappers;
+#endif