diff options
| author | Eric Andersen <andersen@codepoet.org> | 2002-02-20 09:18:50 +0000 |
|---|---|---|
| committer | Eric Andersen <andersen@codepoet.org> | 2002-02-20 09:18:50 +0000 |
| commit | e356ea321c8098cf1a83a67e27d64c44de08a298 (patch) | |
| tree | 8be9273fb8f0e6acab47a9e09552cfbea5400b31 /libpthread/linuxthreads | |
| parent | 07ebf927b17572d92e785533d6e8ac1668cc57c6 (diff) | |
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
Diffstat (limited to 'libpthread/linuxthreads')
64 files changed, 12674 insertions, 0 deletions
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 <drepper@redhat.com> + + * semaphore.h (SEM_FAILED): Use 0 not NULL. + +2000-02-14 Ulrich Drepper <drepper@redhat.com> + + * 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 <kaz@ashi.footprints.net>. + +2000-02-13 Ulrich Drepper <drepper@redhat.com> + + * 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 <kaz@ashi.footprints.net> + + * 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 <drepper@redhat.com> + + * 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 <drepper@redhat.com> + + * 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 <drepper@cygnus.com> + + * manager.c (pthread_allocate_stack): Compute guard page address + correctly. Patch by HJ Lu. + +2000-01-12 Ulrich Drepper <drepper@cygnus.com> + + * 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 <kaz@ashi.footprints.net>. + +2000-01-06 Andreas Jaeger <aj@suse.de> + + * pthread.c: Remove extra initializer. + +2000-01-05 Ulrich Drepper <drepper@cygnus.com> + + * 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 <kaz@ashi.footprints.net> + + 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 <drepper@cygnus.com> + + * 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 <drepper@cygnus.com> + + * 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 <aj@suse.de> + + * pthread.c (pthread_initialize): Move getrlimit call after + setting of errno. + +1999-12-01 Ulrich Drepper <drepper@cygnus.com> + + * sysdeps/i386/pt-machine.h: Move stack_pointer definition to the + beginning. + * sysdeps/i386/i686/pt-machine.h: Likewise. + Patches by Alan Modra <alan@SPRI.Levels.UniSA.Edu.Au>. + +1999-11-23 Ulrich Drepper <drepper@cygnus.com> + + * manager.c (pthread_start_thread_event): Initialize p_pid already + here. + +1999-11-22 Ulrich Drepper <drepper@cygnus.com> + + * 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 <drepper@cygnus.com> + + * pthread.c (__pthread_initialize_manager): Initialize + __pthread_manager_thread.p_tid. + +1999-11-02 Ulrich Drepper <drepper@cygnus.com> + + * 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 <drepper@cygnus.com> + + * 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 <Xavier.Leroy@inria.fr> + + * 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 <aj@suse.de> + + * internals.h: Add __new_sem_post to get prototype in + manager.c; include semaphore.h for needed types. + +1999-10-08 Ulrich Drepper <drepper@cygnus.com> + + * 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 <drepper@cygnus.com> + + * condvar.c (pthread_cond_timedwait_relative): Never return with + EINTR. Patch by Andreas Schwab. + +1999-09-19 Ulrich Drepper <drepper@cygnus.com> + + * 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 <drepper@cygnus.com> + + * specific.c: Move definitions of struct pthread_key_struct and + destr_function to ... + * internals.h: ...here. + +1999-09-03 Andreas Schwab <schwab@suse.de> + + * 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 <schwab@suse.de> + + * signals.c (pthread_sighandler): Add SIGCONTEXT_EXTRA_ARGS to + call to signal handler. + +1999-08-20 Ulrich Drepper <drepper@cygnus.com> + + * 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 <drepper@cygnus.com> + + * 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 <drepper@cygnus.com> + + * Versions [ld.so] (GLIBC_2.0): Export __libc_internal_tsd_get and + __libc_internal_tsd_set. + +1999-07-29 Andreas Jaeger <aj@arthur.rhein-neckar.de> + + * manager.c: Remove inclusion of <linux/tasks.h> since it's not + needed anymore. + +1999-07-16 Andreas Jaeger <aj@arthur.rhein-neckar.de> + + * internals.h: Align _pthread_descr_struct to 32 bytes. + Reported by Tim Hockin <thockin@cobaltnet.com>, close PR libc/1206. + +1999-07-09 Ulrich Drepper <drepper@cygnus.com> + + * manager.c (pthread_handle_create): Free mmap region after stack + if clone failed. Patch by Kaz Kylheku <kaz@ashi.FootPrints.net>. + +1999-07-09 Cristian Gafton <gafton@redhat.com> + + * 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 <robey@netscape.com> + + * 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 <aj@arthur.rhein-neckar.de> + + * man/pthread_cond_init.man: Correct example. + Reported by Tomas Berndtsson <tomas@nocrew.org>. + + * linuxthreads.texi (Condition Variables): Likewise. + +1999-05-18 Jakub Jelinek <jj@ultra.linux.cz> + + * 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 <Xavier.Leroy@inria.fr> + + * 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 <drepper@cygnus.com> + + * sysdeps/sparc/sparc64/pt-machine.h (__compare_and_swap): cas + instruction does not allow memory element to use offset. + +1999-04-28 Ulrich Drepper <drepper@cygnus.com> + + * 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 <aj@arthur.rhein-neckar.de> + + * 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 <drepper@cygnus.com> + + * 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 <hjl@gnu.org> + + * 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 <hjl@gnu.org> + + * 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 <hjl@gnu.org> + + * 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 <hjl@gnu.org> + + * 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 <drepper@cygnus.com> + + * manager.c (pthread_allocate_stack): Set + __pthread_nonstandard_stacks if user-specified stack is used. + +1999-01-16 Ulrich Drepper <drepper@cygnus.com> + + * 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 <Xavier.Leroy@inria.fr> + + * 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 <schwab@issan.cs.uni-dortmund.de> + + * linuxthreads.texi: Remove pointers from first @node. Move old + @node spec inside comment. + +1998-12-31 Ulrich Drepper <drepper@cygnus.com> + + * sysdeps/pthread/bits/stdio-lock.h: Define _IO_lock_lock and + _IO_lock_unlock. + +1998-12-29 Ulrich Drepper <drepper@cygnus.com> + + * semaphore.c (sem_trywait): Don't forget to unlock the semaphore + lock. Patch by Bernd Schmidt <crux@pool.informatik.rwth-aachen.de>. + +1998-12-21 Ulrich Drepper <drepper@cygnus.com> + + * 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 <drepper@cygnus.com> + + * spinlock.c (__pthread_unlock): Don't crash if called for an + untaken mutex. Reported by Ruslan V. Brushkoff <rus@Snif.Te.Net.UA>. + + * Examples/ex6.c: Unbuffer stdout and reduce sleep time to reduce + overall runtime. + +1998-12-13 Ulrich Drepper <drepper@cygnus.com> + + * 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 <aj@arthur.rhein-neckar.de> + + * 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 <hjl@gnu.org> + + * pthread.c (__pthread_sig_restart): Initiliaze to 0 if + SIGRTMIN is defined. + (__pthread_sig_cancel): Likewise. + +1998-12-01 Andreas Jaeger <aj@arthur.rhein-neckar.de> + + * wrapsyscall.c: Include <sys/mman.h> for msync, + <stdlib.h> for system and <termios.h> for tcdrain prototype. + Correct msync declaration. + +1998-11-29 Roland McGrath <roland@baalperazim.frob.com> + + * 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 <roland@baalperazim.frob.com> + + * internals.h: Include <bits/libc-tsd.h>, not <bits/libc-lock.h>. + * sysdeps/pthread/bits/libc-lock.h (__libc_internal_tsd_get, + __libc_internal_tsd_set): Move decls to ... |