From e356ea321c8098cf1a83a67e27d64c44de08a298 Mon Sep 17 00:00:00 2001 From: Eric Andersen Date: Wed, 20 Feb 2002 09:18:50 +0000 Subject: Merge in the pthread library. This is the linuxthreads library taken from glibc 2.1.3 and ported to work with uClibc by Stefan Soucek and Erik Andersen (me). Stefan has hacked things up such that linuxthreads runs on MMU-less systems (tested only on arm-nommu). Erik cleaned things up and made it work properly as a shared library. -Erik --- libpthread/linuxthreads/ChangeLog | 1257 +++++++++++++++++ libpthread/linuxthreads/Changes | 73 + libpthread/linuxthreads/FAQ.html | 1039 ++++++++++++++ libpthread/linuxthreads/LICENSE | 501 +++++++ libpthread/linuxthreads/Makefile | 59 + libpthread/linuxthreads/README | 166 +++ libpthread/linuxthreads/README.Xfree3.2 | 352 +++++ libpthread/linuxthreads/Versions | 121 ++ libpthread/linuxthreads/attr.c | 214 +++ libpthread/linuxthreads/cancel.c | 171 +++ libpthread/linuxthreads/condvar.c | 417 ++++++ libpthread/linuxthreads/configure | 5 + libpthread/linuxthreads/debug.h | 50 + libpthread/linuxthreads/errno.c | 34 + libpthread/linuxthreads/events.c | 35 + libpthread/linuxthreads/internals.h | 480 +++++++ libpthread/linuxthreads/join.c | 213 +++ libpthread/linuxthreads/linuxthreads.texi | 1428 ++++++++++++++++++++ libpthread/linuxthreads/lockfile.c | 88 ++ libpthread/linuxthreads/manager.c | 786 +++++++++++ libpthread/linuxthreads/mutex.c | 201 +++ libpthread/linuxthreads/no-tsd.c | 33 + libpthread/linuxthreads/oldsemaphore.c | 235 ++++ libpthread/linuxthreads/pt-machine.c | 22 + libpthread/linuxthreads/ptfork.c | 107 ++ libpthread/linuxthreads/pthread.c | 876 ++++++++++++ libpthread/linuxthreads/ptlongjmp.c | 55 + libpthread/linuxthreads/queue.h | 61 + libpthread/linuxthreads/restart.h | 27 + libpthread/linuxthreads/rwlock.c | 486 +++++++ libpthread/linuxthreads/semaphore.c | 209 +++ libpthread/linuxthreads/semaphore.h | 80 ++ libpthread/linuxthreads/signals.c | 239 ++++ libpthread/linuxthreads/specific.c | 179 +++ libpthread/linuxthreads/spinlock.c | 195 +++ libpthread/linuxthreads/spinlock.h | 102 ++ libpthread/linuxthreads/sysdeps/alpha/pt-machine.h | 108 ++ .../linuxthreads/sysdeps/alpha/sigcontextinfo.h | 25 + .../linuxthreads/sysdeps/arm/bits/armsigctx.h | 73 + libpthread/linuxthreads/sysdeps/arm/pt-machine.h | 48 + .../linuxthreads/sysdeps/i386/i686/pt-machine.h | 67 + libpthread/linuxthreads/sysdeps/i386/pt-machine.h | 99 ++ .../linuxthreads/sysdeps/i386/sigcontextinfo.h | 24 + libpthread/linuxthreads/sysdeps/i386/useldt.h | 170 +++ libpthread/linuxthreads/sysdeps/m68k/pt-machine.h | 62 + .../linuxthreads/sysdeps/m68k/sigcontextinfo.h | 26 + libpthread/linuxthreads/sysdeps/mips/pt-machine.h | 90 ++ .../linuxthreads/sysdeps/mips/sigcontextinfo.h | 27 + .../linuxthreads/sysdeps/powerpc/pt-machine.h | 69 + .../linuxthreads/sysdeps/powerpc/sigcontextinfo.h | 27 + .../linuxthreads/sysdeps/pthread/bits/libc-lock.h | 214 +++ .../linuxthreads/sysdeps/pthread/bits/libc-tsd.h | 44 + .../sysdeps/pthread/bits/pthreadtypes.h | 122 ++ .../linuxthreads/sysdeps/pthread/bits/stdio-lock.h | 39 + .../sysdeps/sparc/sparc32/pt-machine.h | 66 + .../sysdeps/sparc/sparc32/sigcontextinfo.h | 29 + .../sysdeps/sparc/sparc64/pt-machine.h | 77 ++ .../sysdeps/sparc/sparc64/sigcontextinfo.h | 32 + .../sysdeps/unix/sysv/linux/bits/local_lim.h | 55 + .../sysdeps/unix/sysv/linux/bits/posix_opt.h | 110 ++ .../sysdeps/unix/sysv/linux/bits/sigthread.h | 37 + libpthread/linuxthreads/testrtsig.h | 40 + libpthread/linuxthreads/weaks.c | 120 ++ libpthread/linuxthreads/wrapsyscall.c | 178 +++ 64 files changed, 12674 insertions(+) create mode 100644 libpthread/linuxthreads/ChangeLog create mode 100644 libpthread/linuxthreads/Changes create mode 100644 libpthread/linuxthreads/FAQ.html create mode 100644 libpthread/linuxthreads/LICENSE create mode 100644 libpthread/linuxthreads/Makefile create mode 100644 libpthread/linuxthreads/README create mode 100644 libpthread/linuxthreads/README.Xfree3.2 create mode 100644 libpthread/linuxthreads/Versions create mode 100644 libpthread/linuxthreads/attr.c create mode 100644 libpthread/linuxthreads/cancel.c create mode 100644 libpthread/linuxthreads/condvar.c create mode 100644 libpthread/linuxthreads/configure create mode 100644 libpthread/linuxthreads/debug.h create mode 100644 libpthread/linuxthreads/errno.c create mode 100644 libpthread/linuxthreads/events.c create mode 100644 libpthread/linuxthreads/internals.h create mode 100644 libpthread/linuxthreads/join.c create mode 100644 libpthread/linuxthreads/linuxthreads.texi create mode 100644 libpthread/linuxthreads/lockfile.c create mode 100644 libpthread/linuxthreads/manager.c create mode 100644 libpthread/linuxthreads/mutex.c create mode 100644 libpthread/linuxthreads/no-tsd.c create mode 100644 libpthread/linuxthreads/oldsemaphore.c create mode 100644 libpthread/linuxthreads/pt-machine.c create mode 100644 libpthread/linuxthreads/ptfork.c create mode 100644 libpthread/linuxthreads/pthread.c create mode 100644 libpthread/linuxthreads/ptlongjmp.c create mode 100644 libpthread/linuxthreads/queue.h create mode 100644 libpthread/linuxthreads/restart.h create mode 100644 libpthread/linuxthreads/rwlock.c create mode 100644 libpthread/linuxthreads/semaphore.c create mode 100644 libpthread/linuxthreads/semaphore.h create mode 100644 libpthread/linuxthreads/signals.c create mode 100644 libpthread/linuxthreads/specific.c create mode 100644 libpthread/linuxthreads/spinlock.c create mode 100644 libpthread/linuxthreads/spinlock.h create mode 100644 libpthread/linuxthreads/sysdeps/alpha/pt-machine.h create mode 100644 libpthread/linuxthreads/sysdeps/alpha/sigcontextinfo.h create mode 100644 libpthread/linuxthreads/sysdeps/arm/bits/armsigctx.h create mode 100644 libpthread/linuxthreads/sysdeps/arm/pt-machine.h create mode 100644 libpthread/linuxthreads/sysdeps/i386/i686/pt-machine.h create mode 100644 libpthread/linuxthreads/sysdeps/i386/pt-machine.h create mode 100644 libpthread/linuxthreads/sysdeps/i386/sigcontextinfo.h create mode 100644 libpthread/linuxthreads/sysdeps/i386/useldt.h create mode 100644 libpthread/linuxthreads/sysdeps/m68k/pt-machine.h create mode 100644 libpthread/linuxthreads/sysdeps/m68k/sigcontextinfo.h create mode 100644 libpthread/linuxthreads/sysdeps/mips/pt-machine.h create mode 100644 libpthread/linuxthreads/sysdeps/mips/sigcontextinfo.h create mode 100644 libpthread/linuxthreads/sysdeps/powerpc/pt-machine.h create mode 100644 libpthread/linuxthreads/sysdeps/powerpc/sigcontextinfo.h create mode 100644 libpthread/linuxthreads/sysdeps/pthread/bits/libc-lock.h create mode 100644 libpthread/linuxthreads/sysdeps/pthread/bits/libc-tsd.h create mode 100644 libpthread/linuxthreads/sysdeps/pthread/bits/pthreadtypes.h create mode 100644 libpthread/linuxthreads/sysdeps/pthread/bits/stdio-lock.h create mode 100644 libpthread/linuxthreads/sysdeps/sparc/sparc32/pt-machine.h create mode 100644 libpthread/linuxthreads/sysdeps/sparc/sparc32/sigcontextinfo.h create mode 100644 libpthread/linuxthreads/sysdeps/sparc/sparc64/pt-machine.h create mode 100644 libpthread/linuxthreads/sysdeps/sparc/sparc64/sigcontextinfo.h create mode 100644 libpthread/linuxthreads/sysdeps/unix/sysv/linux/bits/local_lim.h create mode 100644 libpthread/linuxthreads/sysdeps/unix/sysv/linux/bits/posix_opt.h create mode 100644 libpthread/linuxthreads/sysdeps/unix/sysv/linux/bits/sigthread.h create mode 100644 libpthread/linuxthreads/testrtsig.h create mode 100644 libpthread/linuxthreads/weaks.c create mode 100644 libpthread/linuxthreads/wrapsyscall.c (limited to 'libpthread/linuxthreads') diff --git a/libpthread/linuxthreads/ChangeLog b/libpthread/linuxthreads/ChangeLog new file mode 100644 index 000000000..0025b87c0 --- /dev/null +++ b/libpthread/linuxthreads/ChangeLog @@ -0,0 +1,1257 @@ +2000-02-22 Ulrich Drepper + + * semaphore.h (SEM_FAILED): Use 0 not NULL. + +2000-02-14 Ulrich Drepper + + * condvar.c (pthread_cond_timedwait_relative_old): Tight loop with + nanosleep does not work either. Get absolute time inside the + loop. + (pthread_cond_timedwait_relative_new): Likewise. + Patch by Kaz Kylheku . + +2000-02-13 Ulrich Drepper + + * condvar.c (pthread_cond_timedwait_relative_old): Undo last patch + but keep the code around. A bug in the kernel prevent us from + using the code. + (pthread_cond_timedwait_relative_new): Likewise. + (PR libc/1597 and libc/1598). + +2000-02-01 Kaz Kylheku + + * condvar.c (pthread_cond_timedwait_relative_old): Do tight + loop around nanosleep calls instead of around most of the function + (pthread_cond_timedwait_relative_new): Likewise. + body. Got rid of backwards goto and one local. + +2000-01-31 Ulrich Drepper + + * condvar.c (pthread_cond_timedwait_relative_old): Recompute time + before every nanosleep call to account for time spent in the rest + of the function. + (pthread_cond_timedwait_relative_new): Likewise. + Patch by khendricks@ivey.uwo.ca (PR libc/1564). + +2000-01-29 Ulrich Drepper + + * condvar.c (pthread_cond_timedwait_relative_old): Get remaining time + from nanosleep call so that in case we restart we only wait for the + remaining time. + (pthread_cond_timedwait_relative_new): Likewise. + Patch by khendricks@ivey.uwo.ca (PR libc/1561). + +2000-01-18 Ulrich Drepper + + * manager.c (pthread_allocate_stack): Compute guard page address + correctly. Patch by HJ Lu. + +2000-01-12 Ulrich Drepper + + * internals.h (pthread_readlock_info): New structure. + (_pthread_descr_struct): Add p_readlock_list, p_readlock_free, and + p_untracked_readlock_count. + * pthread.c (__pthread_initial_thread, pthread_manager_thread): + Add initializers for new fields. + * manager.c (pthread_free): Free read/write lock lists. + * queue.h (queue_is_empty): New function. + * rwlock.c: Implement requirements about when readers should get + locks assigned. + * sysdeps/pthread/pthread.h + (PTHREAD_RWLOCK_PREFER_WRITER_NONRECURSIVE_NP): New definition. + * sysdeps/pthread/bits/pthreadtypes.h (struct _pthread_rwlock_t): + Define this name as well. + Patches by Kaz Kylheku . + +2000-01-06 Andreas Jaeger + + * pthread.c: Remove extra initializer. + +2000-01-05 Ulrich Drepper + + * pthread.c (__pthread_initial_thread, pthread_manager_thread): + Adjust initializers for struct _pthread_descr_struct change. + * internals.h (struct _pthread_descr_struct): Move new elements to + the end. + +2000-01-03 Kaz Kylheku + + Redesigned how cancellation unblocks a thread from internal + cancellation points (sem_wait, pthread_join, + pthread_cond_{wait,timedwait}). + Cancellation won't eat a signal in any of these functions + (*required* by POSIX and Single Unix Spec!). + * condvar.c: Spontaneous wakeup on pthread_cond_timedwait won't eat a + simultaneous condition variable signal (not required by POSIX + or Single Unix Spec, but nice). + * spinlock.c: __pthread_lock queues back any received restarts + that don't belong to it instead of assuming ownership of lock + upon any restart; fastlock can no longer be acquired by two threads + simultaneously. + * restart.h: Restarts queue even on kernels that don't have + queued real time signals (2.0, early 2.1), thanks to atomic counter, + avoiding a rare race condition in pthread_cond_timedwait. + +1999-12-28 Ulrich Drepper + + * sysdeps/alpha/pt-machine.h: Move stack_pointer definition to the + beginning. + + * manager.c (__pthread_start): Add one more cast to assignment of + arg to prevent warning on 64bit machines. + +1999-12-21 Ulrich Drepper + + * manager.c (pthread_handle_create): Set p_pid of new thread + before calling the callback function to report a new thread. + +1999-12-20 Andreas Jaeger + + * pthread.c (pthread_initialize): Move getrlimit call after + setting of errno. + +1999-12-01 Ulrich Drepper + + * sysdeps/i386/pt-machine.h: Move stack_pointer definition to the + beginning. + * sysdeps/i386/i686/pt-machine.h: Likewise. + Patches by Alan Modra . + +1999-11-23 Ulrich Drepper + + * manager.c (pthread_start_thread_event): Initialize p_pid already + here. + +1999-11-22 Ulrich Drepper + + * internals.h: Add prototype for __pthread_manager_event. + * manager.c (__pthread_manager_event): New function. + (pthread_start_thread_event): Correct computation of self. + Use INIT_THREAD_SELF. + * pthread.c (__pthread_manager_thread): Initialize p_lock. + (__pthread_initialize_manager): Respect event flags also for creation + of the manager thread. + +1999-11-08 Ulrich Drepper + + * pthread.c (__pthread_initialize_manager): Initialize + __pthread_manager_thread.p_tid. + +1999-11-02 Ulrich Drepper + + * internals.h: Declare __pthread_last_event. + * manager.c: Define __pthread_last_event. + (pthread_handle_create): Set __pthread_last_event. + (pthread_exited): Likewise. + * join.c (pthread_exit): Likewise. + + * Makefile (libpthread-routines): Add events. + * events.c: New file. + * internals.h: Protect against multiple inclusion. + Include thread_dbP.h header. + (struct _pthread_descr_struct): Add new fields p_report_events and + p_eventbuf. + Declare event reporting functions. + * join.c (pthread_exit): Signal event if this is wanted. + * manager.c (__pthread_threads_events): New variable. + (pthread_handle_create): Take new parameters with event information. + Signal TD_CREATE event if wanted. + (__pthread_manager): Adjust pthread_handle_create call. + (pthread_start_thread_event): New function. Block until manager is + finished and then call pthread_start_thread. + (pthread_exited): Signal TD_REAP event if wanted. + +1999-10-26 Ulrich Drepper + + * restart.h (suspend_with_cancellation): Rewrite as a macro. + + * condvar.c (pthread_cond_timedwait_relative): Don't mark as inline. + +1999-10-21 Xavier Leroy + + * linuxthreads/pthread.c: For i386, wrap pthread_handle_sigrestart + and pthread_handle_sigcancel with functions that restore + %gs from the signal context. For each signal handling function, + two wrappers are required, one for a non-RT signal and one for + a RT signal. + * linuxthreads/signal.c: For i386, add code to restore %gs + from the signal context in pthread_sighandler and + pthread_sighandler_rt. + +1999-10-09 Andreas Jaeger + + * internals.h: Add __new_sem_post to get prototype in + manager.c; include semaphore.h for needed types. + +1999-10-08 Ulrich Drepper + + * manager.c (__pthread_manager) [REQ_POST]: Use __new_sem_post + directly instead of calling sem_post which should not be necessary + but is faster and might help in some case to work around problems. + +1999-09-25 Ulrich Drepper + + * condvar.c (pthread_cond_timedwait_relative): Never return with + EINTR. Patch by Andreas Schwab. + +1999-09-19 Ulrich Drepper + + * signals.c (sigaction): Correct last patch. Don't select + pthread_sighandler_rt based on the signal number but instead of + the SA_SIGINFO flag. + +1999-09-23 Ulrich Drepper + + * specific.c: Move definitions of struct pthread_key_struct and + destr_function to ... + * internals.h: ...here. + +1999-09-03 Andreas Schwab + + * ptfork.c (__fork): Renamed from fork and use __libc_fork. Add + fork as weak alias. + (__vfork): New function, alias vfork. + * Versions: Export __fork, vfork, and __vfork in libpthread. + +1999-08-23 Andreas Schwab + + * signals.c (pthread_sighandler): Add SIGCONTEXT_EXTRA_ARGS to + call to signal handler. + +1999-08-20 Ulrich Drepper + + * pthread.c (__pthread_reset_main_thread): Undo last change. + (__pthread_kill_other_threads_np): Reset signal handlers for the + signals we used in the thread implementation here. + +1999-08-19 Ulrich Drepper + + * pthread.c (__pthread_reset_main_thread): Reset signal handlers + for the signals we used in the thread implementation [PR libc/1234]. + + * Versions: Export __pthread_kill_other_threads_np from libpthread + for GLIBC_2.1.2. + + * signals.c: Pass sigcontext through wrapper to the user function. + +1999-08-01 Ulrich Drepper + + * Versions [ld.so] (GLIBC_2.0): Export __libc_internal_tsd_get and + __libc_internal_tsd_set. + +1999-07-29 Andreas Jaeger + + * manager.c: Remove inclusion of since it's not + needed anymore. + +1999-07-16 Andreas Jaeger + + * internals.h: Align _pthread_descr_struct to 32 bytes. + Reported by Tim Hockin , close PR libc/1206. + +1999-07-09 Ulrich Drepper + + * manager.c (pthread_handle_create): Free mmap region after stack + if clone failed. Patch by Kaz Kylheku . + +1999-07-09 Cristian Gafton + + * Makefile (libpthread-routines): Add oldsemaphore routine. + * Versions: Add sem_destroy, sem_getvalue, sem_init, sem_post, + sem_trywait, and sem_wait to GLIBC_2.1. + * oldsemaphore.c: New file. + * semaphore.c: Add default_symbol_versions for the changed functions. + (__new_sem_init): Rename from sem_init. + (__new_sem_post): Rename from sem_post. + (__new_sem_wait): Rename from sem_wait. + (__new_sem_trywait): Rename from sem_trywait. + (__new_sem_getvalue): Rename from sem_getvalue. + (__new_sem_destroy): Rename from sem_destroy. + +1999-06-23 Robey Pointer + + * internals.h: Added p_nextlock entry to separate queueing for a + lock from queueing for a CV (sometimes a thread queues on a lock + to serialize removing itself from a CV queue). + * pthread.c: Added p_nextlock to initializers. + * spinlock.c: Changed to use p_nextlock instead of p_nextwaiting. + +1999-05-23 Andreas Jaeger + + * man/pthread_cond_init.man: Correct example. + Reported by Tomas Berndtsson . + + * linuxthreads.texi (Condition Variables): Likewise. + +1999-05-18 Jakub Jelinek + + * sysdeps/sparc/sparc64/pt-machine.h (__compare_and_swap): Use + casx not cas, also successful casx returns the old value in rd + and not the new value. + +1999-05-16 Xavier Leroy + + * manager.c: If pthread_create() is given a NULL attribute + and the thread manager runs with a realtime policy, set the + scheduling policy of the newly created thread back to SCHED_OTHER. + * manager.c: If the PTHREAD_INHERIT_SCHED attribute is given, + initialize the schedpolicy field of new_thread->p_start_args + to that of the calling thread. + +1999-04-29 Ulrich Drepper + + * sysdeps/sparc/sparc64/pt-machine.h (__compare_and_swap): cas + instruction does not allow memory element to use offset. + +1999-04-28 Ulrich Drepper + + * manager.c (pthread_allocate_stack): Optimize initialization of new + thread descriptor. + + * sysdeps/pthread/bits/libc-lock.h (__libc_lock_define_initialized): + Don't use initializer since it is all zeroes. + (__libc_once_define): Likewise. + +1999-04-16 Andreas Jaeger + + * sysdeps/arm/Implies: Removed since cmpxchg/no-cmpxchg + doesn't exist anymore. + * sysdeps/i386/Implies: Likewise. + * sysdeps/m68k/Implies: Likewise. + * sysdeps/mips/Implies: Likewise. + * sysdeps/powerpc/Implies: Likewise. + * sysdeps/sparc/sparc32/Implies: Likewise. + * sysdeps/sparc/sparc64/Implies: Likewise. + +1999-04-15 Ulrich Drepper + + * sysdeps/alpha/bits/semaphore.h: Removed. + * sysdeps/powerpc/bits/semaphore.h: Removed. + * sysdeps/pthread/cmpxchg/bits/semaphore.h: Removed. + * sysdeps/pthread/no-cmpxchg/bits/semaphore.h: Removed. + * Makefile (headers): Remove bits/semaphore.h. + + * semaphore.h: Define _pthread_descr if necessary. + Don't include limits.h. Define SEM_VALUE_MAX directly. + Define SEM_FAILED. + (sem_t): Protect element names with leading __. + Add declarations for sem_close, sem_open, and sem_unlink. + * semaphore.c: Adjust all functions for new element names. + Define sem_close, sem_open, and sem_unlink. + * Versions (libthread): Add sem_close, sem_open, and sem_unlink for + GLIBC_2.1.1. + * sysdeps/pthread/bits/pthreadtypes.h: Define _pthread_descr only if + necessary. + +1999-03-16 H.J. Lu + + * specific.c (pthread_key_delete): Check th->p_terminated to see + if the thread is running. + + * Versions (__libc_internal_tsd_get, __libc_internal_tsd_set): + Added to GLIBC_2.0 for libc.so. + +1999-02-12 H.J. Lu + + * Versions (__libc_current_sigrtmin, __libc_current_sigrtmax, + __libc_allocate_rtsig): Added to GLIBC_2.1. + + * internals.h (DEFAULT_SIG_RESTART): Removed. + (DEFAULT_SIG_CANCEL): Removed. + + * pthread.c (init_rtsigs, __libc_current_sigrtmin, + __libc_current_sigrtmax, __libc_allocate_rtsig): New functions. + (__pthread_sig_restart, __pthread_sig_cancel, + __pthread_sig_debug): Initialized. + (pthread_initialize): Call init_rtsigs () to initialize + real-time signals. + +1999-02-03 H.J. Lu + + * manager.c (__pthread_manager): Do block __pthread_sig_debug. + Don't restart the thread which sent REQ_DEBUG. + (pthread_start_thread): Check if __pthread_sig_debug > 0 + before debugging. + + * pthread.c (__pthread_initialize_manager): Suspend ourself + after sending __pthread_sig_debug to gdb instead of + __pthread_sig_cancel. + +1999-01-24 H.J. Lu + + * manager.c (__pthread_manager): Delete __pthread_sig_debug + from mask if __pthread_sig_debug > 0. + (pthread_handle_create): Increment __pthread_handles_num. + + * manager.c (pthread_handle_create): Don't pass CLONE_PTRACE to clone. + * pthread.c (__pthread_initialize_manager): Likewise. + + * pthread.c (pthread_initialize): Use __libc_allocate_rtsig (1) + instead of __libc_allocate_rtsig (2). + (__pthread_initialize_manager): Send __pthread_sig_debug to gdb + instead of __pthread_sig_cancel. + (pthread_handle_sigdebug): Fix comments. + +1999-01-21 Ulrich Drepper + + * manager.c (pthread_allocate_stack): Set + __pthread_nonstandard_stacks if user-specified stack is used. + +1999-01-16 Ulrich Drepper + + * sysdeps/unix/sysv/linux/bits/posix_opt.h: Add _LFS_ASYNCHRONOUS_IO, + _LFS_LARGEFILE, _LFS64_LARGEFILE, and _LFS64_STDIO from Unix98. + +1999-01-07 Xavier Leroy + + * pthread.c: Use a third signal __pthread_sig_debug distinct + from __pthread_sig_cancel to notify gdb when a thread is + created + * manager.c: Likewise. + * internals.h: Likewise. + * signals.c: The implementation of sigwait(s) assumed that + all signals in s have signal handlers already attached. + This is not required by the standard, so make it work + also if some of the signals have no handlers. + +1999-01-05 Andreas Schwab + + * linuxthreads.texi: Remove pointers from first @node. Move old + @node spec inside comment. + +1998-12-31 Ulrich Drepper + + * sysdeps/pthread/bits/stdio-lock.h: Define _IO_lock_lock and + _IO_lock_unlock. + +1998-12-29 Ulrich Drepper + + * semaphore.c (sem_trywait): Don't forget to unlock the semaphore + lock. Patch by Bernd Schmidt . + +1998-12-21 Ulrich Drepper + + * manager.c: Threads now send __pthread_sig_cancel on termination. + Change clone call and signal masks. + * thread.c (pthread_handle_sigrestart): Remove special code for + manager. + (pthread_handle_sigcancel): In manager thread call + __pthread_manager_sighandler. + * sysdeps/i386/pt-machine.h (__compare_and_swap): Add memory clobber. + * sysdeps/i386/i686/pt-machine.h: Likewise. + Patches by Xavier Leroy. + +1998-12-14 Ulrich Drepper + + * spinlock.c (__pthread_unlock): Don't crash if called for an + untaken mutex. Reported by Ruslan V. Brushkoff . + + * Examples/ex6.c: Unbuffer stdout and reduce sleep time to reduce + overall runtime. + +1998-12-13 Ulrich Drepper + + * Examples/ex3.c: Wait until all threads are started before + searching for the number to avoid race condition on very fast + systems. + +1998-12-08 Andreas Jaeger + + * sysdeps/pthread/pthread.h: Remove __pthread_setcanceltype + declaration since it's not needed. + + * sysdeps/pthread/pthread.h: Move internal functions to ... + * internals.h: ...here. + +1998-12-02 H.J. Lu + + * pthread.c (__pthread_sig_restart): Initiliaze to 0 if + SIGRTMIN is defined. + (__pthread_sig_cancel): Likewise. + +1998-12-01 Andreas Jaeger + + * wrapsyscall.c: Include for msync, + for system and for tcdrain prototype. + Correct msync declaration. + +1998-11-29 Roland McGrath + + * sysdeps/pthread/bits/libc-tsd.h (__libc_tsd_define, __libc_tsd_get, + __libc_tsd_set): New macros for new interface. + * no-tsd.c: New file, provide uninitialized defns of + __libc_internal_tsd_get and __libc_internal_tsd_set. + * Makefile (routines): Add no-tsd. + +1998-10-12 Roland McGrath + + * internals.h: Include , not . + * sysdeps/pthread/bits/libc-lock.h (__libc_internal_tsd_get, + __libc_internal_tsd_set): Move decls to ... + * sysdeps/pthread/bits/libc-tsd.h: New file for __libc_internal_tsd_* + declarations. + + * sysdeps/pthread/bits/libc-lock.h (__libc_internal_tsd_get, + __libc_internal_tsd_set): Make these pointers to functions, not + functions; remove #pragma weak decls for them. + * specific.c (__libc_internal_tsd_get, __libc_internal_tsd_set): + Define static functions and initialized pointers to them. + +1998-11-18 Ulrich Drepper + + * Makefile (CFLAGS-mutex.c): Define as -D__NO_WEAK_PTHREAD_ALIASES. + (CFLAGS-specific.c): Likewise. + (CFLAGS-pthread.c): Likewise. + (CFLAGS-ptfork.c): Likewise. + (CFLAGS-cancel.c): Likewise. + * sysdeps/pthread/bits/libc-lock.h: Don't mark __pthread_* functions + as weak references if __NO_WEAK_PTHREAD_ALIASES is defined. + + * mutex.c (pthread_mutex_init): Define as strong symbol. + (pthread_mutex_destroy): Likewise. + (pthread_mutex_trylock): Likewise. + (pthread_mutex_lock): Likewise. + (pthread_mutex_unlock): Likewise. + (pthread_mutexattr_init): Likewise. + (pthread_mutexattr_destroy): Likewise. + (pthread_once): Likewise. + * ptfork.c (pthread_atfork): Likewise. + * specific.c (pthread_key_create): Likewise. + (pthread_setspecific): Likewise. + (pthread_getspecific): Likewise. + +1998-11-15 Andreas Schwab + + * linuxthreads.texi: Fix punctuation after xref. + +1998-11-10 H.J. Lu + + * sysdeps/unix/sysv/linux/bits/local_lim.h: Undefine NR_OPEN + if it is defined in . + +1998-10-29 14:28 Ulrich Drepper + + * spinlock.h (__pthread_trylock): Define inline. + (__pthread_lock): Add extra parameter to declaration. Declare + using internal_function. + (__pthread_unlock): Declare using internal_function. + * spinlock.c (__pthread_lock): Add new parameter. Use it instead + of local variable self. Avoid recomputing self. Define using + internal_function. + (__pthread_trylock): Remove. + (__pthread_unlock): Define using internal_function. + * cancel.c: Adjust for __pthread_lock interface change. Use already + computed self value is possible. + * condvar.c: Likewise. + * join.c: Likewise. + * manager.c: Likewise. + * mutex.c: Likewise. + * pthread.c: Likewise. + * rwlock.c: Likewise. + * semaphore.c: Likewise. + * signals.c: Likewise. + +1998-10-27 13:46 Ulrich Drepper + + * sysdeps/pthread/pthread.h (struct _pthread_cleanup_buffer): Prepend + __ to field names of the struct. + * sysdeps/pthread/bits/pthreadtypes.h (struct _pthread_fastlock): + Likewise. + (pthread_attr_t): Likewise. + (pthread_cond_t): Likewise. + (pthread_condattr_t): Likewise. + (pthread_mutex_t): Likewise. + (pthread_mutexattr_t): Likewise. + (pthread_rwlock_t): Likewise. + (pthread_rwlockattr_t): Likewise. + * attr.c: Adjust for pthread.h and pthreadtypes.h change. + * cancel.c: Likewise. + * condvar.c: Likewise. + * manager.c: Likewise. + * mutex.c: Likewise. + * pthread.c: Likewise. + * ptlongjmp.c: Likewise. + * rwlock.c: Likewise. + * spinlock.c: Likewise. + +1998-10-09 Ulrich Drepper + + * sysdeps/i386/pt-machine.h (get_eflags, set_eflags): Mark these + also with PT_EI. + + * sysdeps/i386/i686/pt-machine.h: Remove unused inline + definitions. + + * Makefile (libpthread-routines): Add pt-machine. + * pt-machine.c: New file. + * sysdeps/alpha/pt-machine.h: Define PT_EI as extern inline is not + yet defined. Use PT_EI in extern inline definitions. + * sysdeps/arm/pt-machine.h: Likewise. + * sysdeps/i386/pt-machine.h: Likewise. + * sysdeps/i386/i686/pt-machine.h: Likewise. + * sysdeps/m68k/pt-machine.h: Likewise. + * sysdeps/mips/pt-machine.h: Likewise. + * sysdeps/powerpc/pt-machine.h: Likewise. + * sysdeps/sparc/sparc32/pt-machine.h: Likewise. + * sysdeps/sparc/sparc64/pt-machine.h: Likewise. + +1998-10-02 Andreas Jaeger + + * semaphore.h: Include so that _pthread_descr + is declared. + +1998-09-15 David S. Miller + + * sysdeps/sparc/sparc32/pt-machine.h (INIT_THREAD_SELF): Add nr + argument. + * sysdeps/sparc/sparc64/pt-machine.h (INIT_THREAD_SELF): Likewise. + +1998-09-12 14:24 -0400 Zack Weinberg + + * linuxthreads/sysdeps/unix/sysv/linux/bits/sigthread.h: Add + multiple inclusion guard. + +1998-09-02 11:08 Andreas Schwab + + * signals.c (sigaction): Check that sig is less than NSIG to avoid + array index overflow. + +1998-09-06 10:56 Ulrich Drepper + + * sysdeps/pthread/semaphore.h: New file. + +1998-09-06 09:08 Ulrich Drepper + + * sysdeps/pthread/bits/libc-lock.h (enum __libc_tsd_key_t): Add + _LIBC_TSD_KEY_DL_ERROR. + +1998-08-31 Ulrich Drepper + + * sysdeps/i386/i686/pt-machine.h (testandset): Add memory clobber. + * sysdeps/i386/pt-machine.h: Likewise. + Suggested by Roland McGrath. + +1998-08-28 13:58 Ulrich Drepper + + * internals.h: Also define THREAD_GETMEM_NC and THREAD_SETMEM_NC to + access thread data with non-constant offsets. + * specific.c: Use THREAD_GETMEM_NC and THREAD_SETMEM_NC where + necessary. + + * sysdeps/i386/useldt.h: Fix typo. Add THREAD_GETMEM_NC and + THREAD_SETMEM_NC definitions. + + * sysdeps/sparc/sparc32/pt-machine.h: Define THREAD_GETMEM_NC and + THREAD_SETMEM_NC. + * sysdeps/sparc/sparc64/pt-machine.h: Likewise. + +1998-08-26 15:46 Ulrich Drepper + + * internals.h: Define THREAD_GETMEM and THREAD_SETMEM to default if + not already defined. + (struct _pthread_descr_struct): Add p_self and p_nr field. + * manager.c (__pthread_handles): Define second element to point + to manager thread. + (__pthread_handles_num): Initialize to 2. + (__pthread_manager): Use INIT_THREAD_SELF with two arguments. + (pthread_start_thread): Likewise. + (pthread_handle_create): Start search for free slot at entry 2. + Initialize new fields p_self and p_nr. + Call __clone with CLONE_PTRACE if available. + (pthread_free): Call FREE_THREAD_SELF if available. + * pthread.c (__pthread_initial_thread): Initialize new fields. + (__pthread_manager_thread): Likewise. + (__pthread_initialize_manager): Call __clone with CLONE_PTRACE. + + * cancel.c: Use THREAD_GETMEM and THREAD_SETMEM to access the + elements of the thread descriptor. + * condvar.c: Likewise. + * errno.c: Likewise. + * join.c: Likewise. + * manager.c: Likewise. + * pthread.c: Likewise. + * ptlongjmp.c: Likewise. + * semaphore.c: Likewise. + * signals.c: Likewise. + * specific.c: Likewise. + * spinlock.c: Likewise. + + * sysdeps/alpha/pt-machine.h (INIT_THREAD_SELF): Add extra parameter. + + * sysdeps/i386/useldt.h: New file. + * sysdeps/i386/i686/pt-machine.h: Show how to use this file. + + * sysdeps/sparc/sparc32/pt-machine.h: Define THREAD_GETMEM and + THREAD_SETMEM using __thread_self. + * sysdeps/sparc/sparc64/pt-machine.h: Likewise. + +1998-08-24 Geoff Keating + + * spinlock.c (__pthread_lock): Reset p_nextwaiting to NULL if it + turned out that we didn't need to queue after all. + +1998-08-22 Geoff Keating + + * sysdeps/powerpc/pt-machine.h: Remove testandset, it's not used + and wastes space; correct types. + +1998-08-08 11:18 H.J. Lu + + * signals.c (sigaction): Handle NULL argument. + +1998-08-04 Ulrich Drepper + + * sysdeps/unix/sysv/linux/bits/sigthread.h: Use __sigset_t instead + of sigset_t. + +1998-08-02 Andreas Schwab + + * Makefile (linuxthreads-version): Extract correct number from + Banner. + +1998-07-29 Xavier Leroy + + * Banner: Bump version number to 0.8 + * FAQ.html: Many updates, in particular w.r.t. debugging. + * manager.c: Support for non-default stacksize for + LinuxThreads-allocated stacks; + don't use guard pages for stacks with default size, rely on + rlimit(RLIMIT_STACK) instead (it's cheaper). + * attr.c: Likewise. + * cancel.c: Use __pthread_sig_cancel and __pthread_sig_restart + everywhere instead of PTHREAD_SIG_CANCEL and PTHREAD_SIG_RESTART. + * condvar.c: Likewise. + * internals.h: Likewise. + * restart.h: Likewise. + * signals.c: Likewise. + * pthread.c: Likewise; set rlimit(RLIMIT_STACK) as we need it. + +1998-07-23 Andreas Schwab + + * weaks.c: Define pthread_mutexattr_[sg]ettype instead of + __pthread_mutexattr_[sg]ettype. Add more weak aliases. + * Versions: Put __pthread_mutexattr_settype under version + GLIBC_2.0. Don't export __pthread_mutexattr_setkind_np and + __pthread_mutexattr_gettype. + +1998-07-23 Andreas Schwab + + * sysdeps/pthread/bits/libc-lock.h: Make + __pthread_mutexattr_settype weak. Don't make + __pthread_mutexattr_setkind_np weak. + +1998-07-16 10:52 Ulrich Drepper + + * manager.c (pthread_handle_create): Check whether sched_setscheduler + call can succeed here. + + * mutex.c: Define __pthread_mutexattr_settype and make + __pthread_mutexattr_setkind_np an alias. + Likewise for __pthread_mutexattr_gettype. + +1998-07-15 11:00 -0400 Zack Weinberg + + * attr.c (pthread_attr_setschedpolicy): Don't check whether caller + is root. + +1998-07-14 19:38 Ulrich Drepper + + * sysdeps/pthread/bits/libc-lock.h: Define __libc_cleanup_end. + +1998-07-11 Andreas Jaeger + + * Examples/ex6.c: Include for usleep. + +1998-06-13 11:04 Andreas Schwab + + * Examples/ex4.c (main): Use exit, not pthread_exit. + +1998-07-09 13:39 Ulrich Drepper + + * Versions: Add __pthread_mutexattr_gettype and + __pthread_mutexattr_settype. + * lockfile.c: Use __pthread_mutexattr_settype instead of + __pthread_mutexattr_setkind_np. + * mutex.c: Define __pthread_mutexattr_gettype and + __pthread_mutexattr_settype. + * weak.c: Likewise. + * sysdeps/pthread/pthread.h: Declare __pthread_mutexattr_gettype and + __pthread_mutexattr_settype. + * sysdeps/pthread/bits/libc-lock.h (__libc_lock_init_recursive): + Use __pthread_mutexattr_settype. + +1998-07-08 22:26 Ulrich Drepper + + * Versions: Add pthread_mutexattr_gettype, pthread_mutexattr_settype. + * mutex.c: Define weak alias pthread_mutexattr_gettype and + pthread_mutexattr_settype. + * sysdeps/pthread/pthread.h: Declare these functions. + Move pthread_sigmask and pthread_kill declaration in separate header. + * sysdeps/unix/sysv/linux/bits/sigthread.h: New file. + +1998-07-07 15:20 Ulrich Drepper + + * Makefile: Add rules to compile and run tests. + * Examples/ex1.c: Little changes to fix warnings. + * Examples/ex2.c: Likewise. + * Examples/ex3.c: Likewise. + * Examples/ex4.c: Likewise. + * Examples/ex5.c: Likewise. + * Examples/ex6.c: New file. + +1998-07-05 11:54 Ulrich Drepper + + * Versions: Add pthread_attr_init to GLIBC_2.1 version in libc. + +1998-07-01 Andreas Jaeger + + * attr.c: Include . + +1998-06-30 11:47 Ulrich Drepper + + * attr.c: Include errno.h. Use memcpy to copy sched_param. + * internals.h: Include limits.h. + * manager.c: Use memcpy to copy sched_param. + * ptfork.c: Include errno.h. + * pthread.c: Likewise. + * semaphore.c: Likewise. + * specific.c: Likewise. + * spinlock.h: Likewise. + * sysdeps/pthread/pthread.h: Include only allowed headers. Move + type definition to ... + * sysdeps/pthread/bits/pthreadtypes.h: ...here. New file. + +1998-06-29 12:34 Ulrich Drepper + + * sysdeps/pthread/pthread.h: Use __PMT not __P for function pointers. + + * sysdeps/pthread/pthread.h: Define various PTHREAD_* symbols also + as macros as demanded in POSIX.1, Annex C. + +1998-06-29 12:29 Ulrich Drepper + + * internals.h (struct pthread_request): For free use pthread_t + instead of pthread_descr. + * join.c (pthread_join): Pass thread_id, not th to manager. + (pthread_detach): Likewise. + * manager.c (__pthread_manager): Except thread ID in FREE_REQ case. + (pthread_exited): Remove detached queue code. + (pthread_handle_free): Expect thread ID parameter and use it to + validate the thread decsriptor. Don't use detached queue. + Patches by Xavier Leroy. + +1998-06-27 Andreas Schwab + + * libpthread.map: Export accept, longjmp, sigaction, siglongjmp, + _IO_flockfile, _IO_ftrylockfile, _IO_funlockfile, + __pthread_atfork, __pthread_key_create, __pthread_once. + * internals.h: Doc fix. + * pthread.c (__pthread_initialize): Define again. + +1998-06-26 Ulrich Drepper + + * manager.c (pthread_exited): If thread is not detached put it on + special list. + (pthread_handle_free): If thread is not on list with living threads + search on list with detached threads. + + * sysdeps/pthread/pthread.h (PTHREAD_RWLOCK_INITIALIZER): Correct + for new definition of pthread_rwlock_t. + + * spinlock.c: Correct test whether to compile + __pthread_compare_and_swap or not. + +1998-06-25 19:27 Ulrich Drepper + + * attr.c: Finish user stack support. Change locking code to be safe + in situations with different priorities. + * cancel.c: Likewise. + * condvar.c: Likewise. + * internals.h: Likewise. + * join.c: Likewise. + * manager.c: Likewise. + * mutex.c: Likewise. + * pthread.c: Likewise. + * ptlongjmp.c: Likewise. + * queue.h: Likewise. + * rwlock.c: Likewise. + * semaphore.c: Likewise. + * semaphore.h: Likewise. + * signals.c: Likewise. + * spinlock.c: Likewise. + * spinlock.h: Likewise. + * sysdeps/pthread/pthread.h: Likewise. + Patches by Xavier Leroy. + + * sysdeps/i386/i686/pt-machine.h: New file. + +1998-06-25 Ulrich Drepper + + * sysdeps/pthread/pthread.h: Make [sg]et_stacksize and + [sg]et_stackaddr prototypes always available. + + * sysdeps/unix/sysv/linux/bits/posix_opt.h: Define + _POSIX_THREAD_ATTR_STACKSIZE and _POSIX_THREAD_ATTR_STACKADDR. + +1998-06-24 Ulrich Drepper + + * manager.c (pthread_free): Undo patch from 980430. + Reported by David Wragg . + +1998-06-09 15:07 Ulrich Drepper + + * manager.c: Define __pthread_manager_adjust_prio and use it to + increase priority when needed. + * internals.h: Add prototype for __pthread_manager_adjust_prio. + * mutex.c: Optimize mutexes to wake up only one thread. + * pthread.c: Move PID of manager for global variable in structure + element. + Patches by Xavier Leroy. + +1998-06-07 13:47 Ulrich Drepper + + * sysdeps/pthread/bits/libc-lock.h: Optimize cleanup handlers a bit. + +1998-06-03 Andreas Jaeger + + * attr.c: Correct typo. + +1998-05-01 Ulrich Drepper + + * manager.c (pthread_free): Unmap guard before the stack. + Patch by Matthias Urlichs. + +1998-04-30 Ulrich Drepper + + * manager.c (pthread_free): Detect already free child. + Patch by Xavier Leroy, reported by Matthias Urlichs. + +1998-04-23 Andreas Schwab + + * Makefile (linuxthreads-version): Renamed back from + libpthread-version. + +1998-04-21 Ulrich Drepper + + * ptlongjmp.c: Add prototypes for __libc_siglongjmp and + __libc_longjmp. + +1998-04-20 14:55 Ulrich Drepper + + * Makefile (libpthread-routines): Add ptlongjmp and spinlock. + * internals.h: Add definitions for new spinlock implementation. + * ptlongjmp.c: New file. + * spinlock.c: New file. + * spinlock.h (acquire): Don't reschedule using __sched_yield, use + new function __pthread_acquire to prevent deadlocks with thread + with different priorities. + Patches by Xavier Leroy . + +1998-03-16 Andreas Schwab + + * manager.c (__pthread_manager): Reduce first argument to select + to include just the needed file descriptor. + +1998-03-17 00:06 Ulrich Drepper + + * manager.c: Fix last patch which caused core dumps. + + * pthread.c: Correctly handle missing SIGRTMIN. + +1998-03-15 Andreas Schwab + + * libpthread.map: Add __libc_internal_tsd_get and + __libc_internal_tsd_set. Add missing cancelable functions. Export + libc internal versions of the cancelable functions. + +1998-03-13 16:51 Ulrich Drepper + + * weaks.c: Define pthread_attr_init as GLIBC_2.0 and GLIBC_2.1. + +1998-03-13 00:46 Ulrich Drepper + + * attr.c: Implement pthread_attr_[gs]etguardsize, + pthread_attr_[gs]setstackaddr, pthread_attr_[gs]etstacksize. + Change pthread_attr_init to have two interfaces. + * internals.h (struct _pthread_descr_struct): Add new fields for + above functions. + * libpthread.map: Add names in GLIBC_2.1 section. + * manager.c (pthread_handle_create): Implement guardsize and + user stack. + (pthread_free): Likewise. + * pthread.c (pthread_create): Add new interface for changed + pthread_attr_t. + * sysdeps/pthread/pthread.h: Add prototypes for new functions. + * sysdeps/unix/sysv/linux/bits/local_lim.h: Add definition of + PTHREAD_STACK_MIN. + +1998-03-11 00:42 Wolfram Gloger + + * manager.c: Enable resetting of the thread scheduling policy + to SCHED_OTHER when the parent thread has a different one. + +1998-02-01 13:51 Ulrich Drepper + + * sysdeps/unix/sysv/linux/bits/posix_opt.h: Define + _POSIX_ASYNCHRONOUS_IO. + + * sysdeps/pthread/pthread.h: Define bits for Unix98 variants of + mutexes. + * mutex.c: Implement new mutex types. + + * internals.h: Include . + + * libpthread.map: Add __erno_location and __h_errno_location. + + * errno.c: Return pointer to variable actually in use. This might + not be the one in the thread structure. + * internals.h (struct _pthread_descr_struct): Add new fields p_errnop + and p_h_errnop. + * manager.c (__pthread_manager): Set p_errnop and p_h_errnop member + of manager thread structure. + (pthread_handle_create): Set p_errnop and p_h_errnop members for new + thread. + * pthread.c: Adapt initializer for thread structures. + (__pthread_initial_thread): Set p_errnop and p_h_errnop member. + (__pthread_reset_main_thread): Reset p_errnop and p_h_errnop of + current thread to global variables. + +1998-01-31 17:27 Ulrich Drepper + + * rwlock.c: New file. + * Makefile (libpthread-routines): Add rwlock. + * sysdeps/pthread/pthread.h: Define data structures and declare + functions. + * libpthread.map: Add new functions. + +1997-12-18 13:50 Philip Blundell + + * sysdeps/arm/pt-machine.h: New file; add ARM support. + * sysdeps/arm/Implies: likewise. + * README: Document it. + +1997-12-13 Andreas Schwab + + * signals.c: Remove unneeded initializer for sigwaited, saving a + warning. + +1997-04-11 01:18 Andreas Schwab + + * semaphore.c (sem_init): Set sem_spinlock only if available. + +1997-12-04 01:48 Ulrich Drepper + + * mutex.c: Implement PTHREAD_MUTEX_CHECKERROR. + * sysdeps/pthread/pthread.h: Define PTHREAD_MUTEX_CHECKERROR. + + * Makefile: Update from LinuxThreads 0.7. + * internals.h. Likewise. + * manager.c: Likewise. + * mutex.c: Likewise. + * pthread.c: Likewise. + * signals.c: Likewise. + * specific.c: Likewise. + * Examples/ex3.c: Likewise. + +1997-11-20 18:13 Ulrich Drepper + + * pthread.c (__pthread_reset_main_thread): Close pipe only if still + open. + +1997-10-29 05:38 Ulrich Drepper + + * wrapsyscall.c: Add socket functions which are also cancelation + points. + +1997-10-19 21:40 Wolfram Gloger + + * specific.c (__libc_internal_tsd_set, __libc_internal_tsd_get): + New functions for fast thread specific data within libc. + + * internals.h: Add new array p_libc_specific to struct + _pthread_descr_struct. + + * sysdeps/pthread/bits/libc-lock.h: Declare new functions. + +1997-10-13 05:39 Ulrich Drepper + + * semaphore.h: Add __BEGIN_DECLS/__END_DECLS. + Reported by Ralf Corsepius . + +1997-08-29 03:05 Ulrich Drepper + + * internals.h (struct _pthread_descr_struct): Add definitions for + two-level specific key handling. + * manager.c (pthread_handle_create): Initialize specific memory array. + * specific.c: Implement two-level key handling. + * weaks.c: Don't provide dummy key handling. + * sysdeps/pthread/bits/libc-lock.h: Typedef __libc_lock_t (no #define). + Add definition of __libc_key_t. + * sysdeps/unix/sysv/linux/bits/local_lim.h: Define PTHREAD_KEYS_MAX + as 1024. + Add definition of _POSIX_THREAD_DESTRUCTOR_ITERATIONS and + PTHREAD_DESTRUCTOR_ITERATIONS. + + * manager.c (pthread_handle_create): Compare mmap result with + MAP_FAILED. + + * ptfork.c: Rename to __pthread_atfork and make old name a weak alias. + * sysdeps/pthread/bits/pthread.h: Add prototype for __pthread_atfork. + +1997-08-22 19:04 Richard Henderson + + sysdeps/sparc -> sysdeps/sparc/sparc32 + sysdeps/sparc64 -> sysdeps/sparc/sparc64 + + * internals.h: Change definition of THREAD_SELF to be an expression, + not a statement that did a return. + * sysdeps/alpha/pt-machine.h (THREAD_SELF): Update accordingly. + * sysdeps/sparc/sparc32/pt-machine.h (THREAD_SELF, INIT_THREAD_SELF): + Follow Solaris and use a "system reserved" register (%g6) to hold + the thread descriptor. + * sysdeps/sparc/sparc64/pt-machine.h: Likewise. + +1997-08-03 00:09 Ulrich Drepper + + * mutex.c: Correct pthread_once. Patch by Xavier Leroy. + * sysdeps/pthread/pthread.h: Add prototype for __pthread_once. + * sysdeps/pthread/bits/pthread.h: Add macros for __libc_once. + + * semaphore.c: Include spinlock.h only when needed. + + * specific.c (__pthread_setsepcific, __pthread_getspecific): Reject + keys for entries not in use. + + * weaks.c: Implement key handling functions for real. + +1997-06-29 01:04 Richard Henderson + + Initial sparc64-linux support: + * linuxthreads/sysdeps/sparc64/Implies: New file. + * linuxthreads/sysdeps/sparc64/pt-machine.h: Likewise. + +1997-06-29 00:48 Ulrich Drepper + + * semaphore.c: Include spinlock.h at correct place. + Patch by HJ Lu. + +1997-06-13 10:06 Richard Henderson + + The Great Bit File Move: + * sysdeps/alpha/semaphorebits.h: -> .../bits/semaphore.h. + * sysdeps/powerpc/semaphorebits.h: Likewise. + * sysdeps/pthread/cmpxchg/semaphorebits.h: Likewise. + * sysdeps/pthread/no-cmpxchg/semaphorebits.h: Likewise. + * sysdeps/pthread/libc-lock.h: -> bits/ + * sysdeps/pthread/stdio-lock.h: Likewise. + * sysdeps/unix/sysv/linux/local_lim.h: Likewise. + * sysdeps/unix/sysv/linux/posix_opt.h: Likewise. + * semaphore.h: Likewise. + * sysdeps/pthread/pthread.h: Likewise. + + * lockfile.c: -> . + * semaphore.h: Likewise. + + * Makefile: (headers): foo.h -> bits/foo.h. + * sysdeps/pthread/Makefile: Likewise. + +1997-04-11 01:18 Andreas Schwab + + * semaphore.c (sem_init): Set sem_spinlock only if available. + + * sysdeps/m68k/pt-machine.h (testandset, __compare_and_swap): Fix + asm constraints. + +1997-04-09 03:00 Ulrich Drepper + + Update from LinuxThreads 0.6. + + * attr.c (pthread_attr_getdetachstate): Use __sched_get_priority_max + and __sched_get_priority_min instead of names without `__'. + + * manager.c: Rewrite large parts to implement opaque pthread_t. + + * cancel.c: Adapt for opaque pthread_t type. + * condvar.c: Likewise. + * errno.c: Likewise. + * join.c: Likewise. + * mutex.c: Likewise. + * pthread.c: Likewise. + * signals.c: Likewise. + * specific.c: Likewise. + * restart.h: Likewise. + * queue.h: Likewise. + * Examples/ex3.c: Likewise. + * Examples/ex4.c: Likewise. + * sysdeps/pthread/pthread.h: Likewise. + + * pthread.c: Accumulate time for all threads in thread manager. + + * semaphore.c: Implement fallback implementation for architectures + sometimes missing compare-exchange operations. + + * cancel.c (pthread_cancel): Validate handle argument. + * join.c (pthread_join): Likewise. + (pthread_detach): Likewise. + * signals.c (pthread_kill): Likewise. + + * spinlock.h (acquire): Use __sched_yield not sched_yield. + + * queue.h (enqueue): Enqueue thread according to priority. + + * internals.c (struct pthread_start_args): New struct for passing + args to cloning function. + (struct _pthread): Rename to _pthread_descr_struct and adapt for + opaque pthread_t. + + * Examples/Makefile (clean): Pass -f option to rm. + + * sysdeps/i386/pt-machine.h: Add check for compare-exchange instruction + and define TEST_FOR_COMPARE_AND_SWAP. + * sysdeps/i386/i486/pt-machine.h: Removed. + + * sysdeps/unix/sysv/linux/local_lim.h (PTHREAD_THREADS_MAX): Increase + to 1024. + +1997-04-04 16:38 Ulrich Drepper + + * restart.h (suspend): Clear p_signal before suspending. + (suspend_with_cancellation): Likewise. + Patch by Xavier Leroy . + + * weaks.c: Make __pthread_key_create return 1. + * sysdeps/pthread/libc-lock.h: Define __libc_key_create, + __libc_getspecific, __libc_setspecific, and __libc_key_t. + * sysdeps/pthread/stdio-lock.h: Don't care for implementation not + using libio. + +1997-03-19 15:13 Miguel de Icaza + + * sysdeps/sparc/pt-machine (RELEASE): Fix. + +1997-03-01 07:55 Geoff Keating + + * sysdeps/powerpc/Implies: Added. + * sysdeps/powerpc/pt-machine.h: Added. + * sysdeps/powerpc/semaphorebits.h: Added. + +1997-01-22 01:22 Ulrich Drepper + + * linuxtheads/pthread.c (__pthread_initial_thread): Correct + initializer. + (__pthread_manager_thread): Likewise. + Reported by Andreas Jaeger. + +1997-01-18 22:15 Richard Henderson + + Since sigset_t no longer fits in a register, we can't pass in the + thread's initial mask so easily. Take this opportunity to simplify + the clone implementation by only accepting a single void* argument. + + * linuxthreads/manager.c (__pthread_manager): Put thread vitals + in the thread struct instead of as arguments through clone. + (pthread_start_thread): Look for them there. + * linuxthreads/internals.h (struct _pthread): Add p_initial_fn, + p_initial_fn_arg, p_initial_mask. Fix __pthread_manager proto. + * linuxthreads/pthread.c (pthread_initialize_manager): Revise + clone invocation. diff --git a/libpthread/linuxthreads/Changes b/libpthread/linuxthreads/Changes new file mode 100644 index 000000000..8ec26c9a6 --- /dev/null +++ b/libpthread/linuxthreads/Changes @@ -0,0 +1,73 @@ +Release 0.7: +- Destructors for thread-specific data now conform to the POSIX semantics + (call destructors again if non-NULL TSD remains after a round of + destruction). +- Implemented thread-specific data as a sparse array, allows more TSD keys + and smaller thread descriptors (Ulrich Drepper). +- Added "error checking" mutexes. +- Protect against multiple sigwait() on the same signals. +- Simplified implementation of semaphores when compare_and_swap is + not available. +- Fixed bug in fork() where stdin was closed if fork() was called before + the first pthread_create(). +- Fixed bug in the gethostby*_r functions (bad result if null bytes + in addresses). +- Typos in manual pages corrected. +- First cut at a PowerPC port (not working yet, runs into problems + with gcc and with the C library). + +Release 0.6: +- Validation of thread identifiers: no more crashes when operating on + a thread that has exited (based on Pavel Krauz's ideas). +- Added fallback implementation of semaphores for the 386 and the + Sparc. +- Fixed a bug in signal handling causing false restarts of suspended + threads. +- Fixed a bug in realtime scheduling causing all threads to have + default scheduling on Ix86 with libc5. +- With realtime scheduling, unlocking a mutex now restarts the + highest priority thread waiting on the mutex, not the + first-suspended thread (Richard Neitzel). +- Timing a process now returns cumulative times for all threads, not + just times for the initial thread (suggested by Wolfram Gloger). +- Cleaned up name space (internal defs prefixed by __, weak aliases + for non-portable extensions). +- MIPS port (contributed by Ralf Baechle). + +Release 0.5: +- Signal-safe semaphores a la POSIX 1003.1b added. +- Locking bug in pthread_mutex_trylock over recursive mutexes fixed. +- Race conditions in thread cancellation fixed. +- Sparc port (contributed by Miguel de Icaza). +- Support for getpwnam_r and getpwuid_r. +- Added pthread_kill_other_threads_np to be used in conjunction with + exec*(). + +Release 0.4: +- Manual pages for all functions. +- Synchronization bug causing accumulation of zombie processes fixed. +- Race condition in pthread_cond_timedwait fixed. +- Recursive mutexes are back by popular demand. +- Partial support for realtime scheduling (initiated by Richard Neitzel). +- pthread.h cleaned up a lot: now C++ compatible, added missing "const" + qualifiers, added short documentation, put to GNU libc standards + for name space pollution (Ulrich Drepper). +- Motorola 68k port (contributed by Andreas Schwab). +- Interaction with fork(2) cleaned up a lot. + +Release 0.3: +- Thread creation and reclaimation now performed by a centralized + "thread manager" thread. +- Removed recursive mutexes to make regular mutexes more efficient. +- Now available as a shared library (contributed by Richard Henderson). +- Alpha port (contributed by Richard Henderson). +- Fixed many small discrepancies with Posix 1003.1c. +- Put under the LGPL instead of the GPL. + +Release 0.2: +- Reentrant libc functions (adapted from libc 5.3.9 by Peeter Joot) +- pthread_cond_wait did not reacquire the mutex correctly on return +- More efficient pthread_cond_broadcast + +Release 0.1: +- First public release diff --git a/libpthread/linuxthreads/FAQ.html b/libpthread/linuxthreads/FAQ.html new file mode 100644 index 000000000..21be33ec4 --- /dev/null +++ b/libpthread/linuxthreads/FAQ.html @@ -0,0 +1,1039 @@ + + +LinuxThreads Frequently Asked Questions + + +

LinuxThreads Frequently Asked Questions
+ (with answers)

+

[For LinuxThreads version 0.8]

+ +

+ +A. The big picture
+B. Getting more information
+C. Issues related to the C library
+D. Problems, weird behaviors, potential bugs
+E. Missing functions, wrong types, etc
+F. C++ issues
+G. Debugging LinuxThreads programs
+H. Compiling multithreaded code; errno madness
+I. X-Windows and other libraries
+J. Signals and threads
+K. Internals of LinuxThreads

+ +

+

+ +

A. The big picture

+ +

A.1: What is LinuxThreads?

+ +LinuxThreads is a Linux library for multi-threaded programming. +It implements the Posix 1003.1c API (Application Programming +Interface) for threads. It runs on any Linux system with kernel 2.0.0 +or more recent, and a suitable C library (see section C). +

+ +

A.2: What are threads?

+ +A thread is a sequential flow of control through a program. +Multi-threaded programming is, thus, a form of parallel programming +where several threads of control are executing concurrently in the +program. All threads execute in the same memory space, and can +therefore work concurrently on shared data.

+ +Multi-threaded programming differs from Unix-style multi-processing in +that all threads share the same memory space (and a few other system +resources, such as file descriptors), instead of running in their own +memory space as is the case with Unix processes.

+ +Threads are useful for two reasons. First, they allow a program to +exploit multi-processor machines: the threads can run in parallel on +several processors, allowing a single program to divide its work +between several processors, thus running faster than a single-threaded +program, which runs on only one processor at a time. Second, some +programs are best expressed as several threads of control that +communicate together, rather than as one big monolithic sequential +program. Examples include server programs, overlapping asynchronous +I/O, and graphical user interfaces.

+ +

A.3: What is POSIX 1003.1c?

+ +It's an API for multi-threaded programming standardized by IEEE as +part of the POSIX standards. Most Unix vendors have endorsed the +POSIX 1003.1c standard. Implementations of the 1003.1c API are +already available under Sun Solaris 2.5, Digital Unix 4.0, +Silicon Graphics IRIX 6, and should soon be available from other +vendors such as IBM and HP. More generally, the 1003.1c API is +replacing relatively quickly the proprietary threads library that were +developed previously under Unix, such as Mach cthreads, Solaris +threads, and IRIX sprocs. Thus, multithreaded programs using the +1003.1c API are likely to run unchanged on a wide variety of Unix +platforms.

+ +

A.4: What is the status of LinuxThreads?

+ +LinuxThreads implements almost all of Posix 1003.1c, as well as a few +extensions. The only part of LinuxThreads that does not conform yet +to Posix is signal handling (see section J). Apart +from the signal stuff, all the Posix 1003.1c base functionality, +as well as a number of optional extensions, are provided and conform +to the standard (to the best of my knowledge). +The signal stuff is hard to get right, at least without special kernel +support, and while I'm definitely looking at ways to implement the +Posix behavior for signals, this might take a long time before it's +completed.

+ +

A.5: How stable is LinuxThreads?

+ +The basic functionality (thread creation and termination, mutexes, +conditions, semaphores) is very stable. Several industrial-strength +programs, such as the AOL multithreaded Web server, use LinuxThreads +and seem quite happy about it. There used to be some rough edges in +the LinuxThreads / C library interface with libc 5, but glibc 2 +fixes all of those problems and is now the standard C library on major +Linux distributions (see section C).

+ +

+

+ +

B. Getting more information

+ +

B.1: What are good books and other sources of +information on POSIX threads?

+ +The FAQ for comp.programming.threads lists several books: +http://www.serpentine.com/~bos/threads-faq/.

+ +There are also some online tutorials. Follow the links from the +LinuxThreads web page: +http://pauillac.inria.fr/~xleroy/linuxthreads.

+ +

B.2: I'd like to be informed of future developments on +LinuxThreads. Is there a mailing list for this purpose?

+ +I post LinuxThreads-related announcements on the newsgroup +comp.os.linux.announce, +and also on the mailing list +linux-threads@magenet.com. +You can subscribe to the latter by writing +majordomo@magenet.com.

+ +

B.3: What are good places for discussing +LinuxThreads?

+ +For questions about programming with POSIX threads in general, use +the newsgroup +comp.programming.threads. +Be sure you read the +FAQ +for this group before you post.

+ +For Linux-specific questions, use +comp.os.linux.development.apps +and comp.os.linux.development.kernel. +The latter is especially appropriate for questions relative to the +interface between the kernel and LinuxThreads.

+ +

B.4: How should I report a possible bug in +LinuxThreads?

+ +If you're using glibc 2, the best way by far is to use the +glibcbug script to mail a bug report to the glibc +maintainers.

+ +If you're using an older libc, or don't have the glibcbug +script on your machine, then e-mail me directly +(Xavier.Leroy@inria.fr).

+ +In both cases, before sending the bug report, make sure that it is not +addressed already in this FAQ. Also, try to send a short program that +reproduces the weird behavior you observed.

+ +

B.5: I'd like to read the POSIX 1003.1c standard. Is +it available online?

+ +Unfortunately, no. POSIX standards are copyrighted by IEEE, and +IEEE does not distribute them freely. You can buy paper copies from +IEEE, but the price is fairly high ($120 or so). If you disagree with +this policy and you're an IEEE member, be sure to let them know.

+ +On the other hand, you probably don't want to read the standard. It's +very hard to read, written in standard-ese, and targeted to +implementors who already know threads inside-out. A good book on +POSIX threads provides the same information in a much more readable form. +I can personally recommend Dave Butenhof's book, Programming +with POSIX threads (Addison-Wesley). Butenhof was part of the +POSIX committee and also designed the Digital Unix implementations of +POSIX threads, and it shows.

+ +Another good source of information is the X/Open Group Single Unix +specification which is available both