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musl/src/thread
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Rich Felker ebf82447be optimize cancellation enable/disable code 
the goal is to be able to use pthread_setcancelstate internally in
the implementation, whenever a function might want to use functions
which are cancellation points but avoid becoming a cancellation point
itself. i could have just used a separate internal function for
temporarily inhibiting cancellation, but the solution in this commit
is better because (1) it's one less implementation-specific detail in
functions that need to use it, and (2) application code can also get
the same benefit.

previously, pthread_setcancelstate dependend on pthread_self, which
would pull in unwanted thread setup overhead for non-threaded
programs. now, it temporarily stores the state in the global libc
struct if threads have not been initialized, and later moves it if
needed. this way we can instead use __pthread_self, which has no
dependencies and assumes that the thread register is already valid.
2011-04-17 13:21:13 -04:00
..
i386 fix some minor issues in cancellation handling patch 2011-04-17 12:09:47 -04:00
x86_64 fix some minor issues in cancellation handling patch 2011-04-17 12:09:47 -04:00
__futex.c global cleanup to use the new syscall interface 2011-03-20 00:16:43 -04:00
__lock.c consistency: change all remaining syscalls to use SYS_ rather than __NR_ prefix 2011-04-06 20:32:53 -04:00
__rsyscall.c fixed crash in new rsyscall (failure to set sa_flags for signal handler) 2011-04-06 20:43:39 -04:00
__set_thread_area.c finish unifying thread register handling in preparation for porting 2011-02-15 03:56:52 -05:00
__timedwait.c overhaul pthread cancellation 2011-04-17 11:43:03 -04:00
__timedwait_cp.c overhaul pthread cancellation 2011-04-17 11:43:03 -04:00
__unmapself.c initial check-in, version 0.5.0 2011-02-12 00:22:29 -05:00
__wait.c consistency: change all remaining syscalls to use SYS_ rather than __NR_ prefix 2011-04-06 20:32:53 -04:00
__wake.c consistency: change all remaining syscalls to use SYS_ rather than __NR_ prefix 2011-04-06 20:32:53 -04:00
cancel_dummy.c overhaul pthread cancellation 2011-04-17 11:43:03 -04:00
cancel_impl.c don't use pthread_once when there is no danger in race 2011-04-17 12:15:55 -04:00
cancellation.c match glibc/lsb cancellation abi on i386 2011-03-25 22:13:57 -04:00
cancellation2.c match glibc/lsb cancellation abi on i386 2011-03-25 22:13:57 -04:00
cancellation3.c match glibc/lsb cancellation abi on i386 2011-03-25 22:13:57 -04:00
clone.c finish unifying thread register handling in preparation for porting 2011-02-15 03:56:52 -05:00
pthread_atfork.c add pthread_atfork interface 2011-02-18 19:52:42 -05:00
pthread_attr_destroy.c initial check-in, version 0.5.0 2011-02-12 00:22:29 -05:00
pthread_attr_getdetachstate.c fix pthread_attr_* implementations to match corrected prototypes 2011-03-11 09:51:14 -05:00
pthread_attr_getguardsize.c fix pthread_attr_* implementations to match corrected prototypes 2011-03-11 09:51:14 -05:00
pthread_attr_getschedparam.c implement dummy pthread_attr_[gs]etschedparam functions 2011-03-11 09:51:54 -05:00
pthread_attr_getscope.c fix pthread_attr_* implementations to match corrected prototypes 2011-03-11 09:51:14 -05:00
pthread_attr_getstacksize.c fix pthread_attr_* implementations to match corrected prototypes 2011-03-11 09:51:14 -05:00
pthread_attr_init.c initial check-in, version 0.5.0 2011-02-12 00:22:29 -05:00
pthread_attr_setdetachstate.c reject invalid attribute settings 2011-03-07 15:46:37 -05:00
pthread_attr_setguardsize.c reorganize pthread data structures and move the definitions to alltypes.h 2011-02-17 17:16:20 -05:00
pthread_attr_setschedparam.c implement dummy pthread_attr_[gs]etschedparam functions 2011-03-11 09:51:54 -05:00
pthread_attr_setscope.c reject invalid attribute settings 2011-03-07 15:46:37 -05:00
pthread_attr_setstacksize.c enforce stack size min in pthread_attr_setstacksize 2011-03-04 00:59:14 -05:00
pthread_barrier_destroy.c initial check-in, version 0.5.0 2011-02-12 00:22:29 -05:00
pthread_barrier_init.c reorganize pthread data structures and move the definitions to alltypes.h 2011-02-17 17:16:20 -05:00
pthread_barrier_wait.c reorganize pthread data structures and move the definitions to alltypes.h 2011-02-17 17:16:20 -05:00
pthread_barrierattr_destroy.c implement barrier attribute functions (essentially no-ops) 2011-03-07 15:42:52 -05:00
pthread_barrierattr_getpshared.c implement barrier attribute functions (essentially no-ops) 2011-03-07 15:42:52 -05:00
pthread_barrierattr_init.c implement barrier attribute functions (essentially no-ops) 2011-03-07 15:42:52 -05:00
pthread_barrierattr_setpshared.c implement barrier attribute functions (essentially no-ops) 2011-03-07 15:42:52 -05:00
pthread_cond_broadcast.c reorganize pthread data structures and move the definitions to alltypes.h 2011-02-17 17:16:20 -05:00
pthread_cond_destroy.c initial check-in, version 0.5.0 2011-02-12 00:22:29 -05:00
pthread_cond_init.c use the selected clock from the condattr for pthread_cond_timedwait 2011-03-07 17:39:13 -05:00
pthread_cond_signal.c reorganize pthread data structures and move the definitions to alltypes.h 2011-02-17 17:16:20 -05:00
pthread_cond_timedwait.c overhaul pthread cancellation 2011-04-17 11:43:03 -04:00
pthread_cond_wait.c initial check-in, version 0.5.0 2011-02-12 00:22:29 -05:00
pthread_condattr_destroy.c implement pthread_condattr_* interfaces 2011-03-07 16:20:12 -05:00
pthread_condattr_getclock.c implement pthread_condattr_* interfaces 2011-03-07 16:20:12 -05:00
pthread_condattr_getpshared.c implement pthread_condattr_* interfaces 2011-03-07 16:20:12 -05:00
pthread_condattr_init.c implement pthread_condattr_* interfaces 2011-03-07 16:20:12 -05:00
pthread_condattr_setclock.c disallow cpu time clocks as condattr clock values 2011-03-08 02:32:42 -05:00
pthread_condattr_setpshared.c implement pthread_condattr_* interfaces 2011-03-07 16:20:12 -05:00
pthread_create.c overhaul pthread cancellation 2011-04-17 11:43:03 -04:00
pthread_detach.c initial check-in, version 0.5.0 2011-02-12 00:22:29 -05:00
pthread_equal.c initial check-in, version 0.5.0 2011-02-12 00:22:29 -05:00
pthread_getspecific.c optimize POSIX TSD for fast pthread_getspecific 2011-03-03 18:30:44 -05:00
pthread_join.c overhaul pthread cancellation 2011-04-17 11:43:03 -04:00
pthread_key_create.c simplify pthread tsd key handling 2011-04-03 02:40:18 -04:00
pthread_kill.c consistency: change all remaining syscalls to use SYS_ rather than __NR_ prefix 2011-04-06 20:32:53 -04:00
pthread_mutex_consistent.c implement robust mutexes 2011-03-17 20:41:37 -04:00
pthread_mutex_destroy.c initial check-in, version 0.5.0 2011-02-12 00:22:29 -05:00
pthread_mutex_init.c implement robust mutexes 2011-03-17 20:41:37 -04:00
pthread_mutex_lock.c cheap trick to further optimize locking normal mutexes 2011-04-14 14:39:57 -04:00
pthread_mutex_timedlock.c implement robust mutexes 2011-03-17 20:41:37 -04:00
pthread_mutex_trylock.c cheap trick to further optimize locking normal mutexes 2011-04-14 14:39:57 -04:00
pthread_mutex_unlock.c avoid crash on stupid but allowable usage of pthread_mutex_unlock 2011-03-30 10:32:45 -04:00
pthread_mutexattr_destroy.c initial check-in, version 0.5.0 2011-02-12 00:22:29 -05:00
pthread_mutexattr_getpshared.c implement pthread_mutexattr_[gs]etpshared functions 2011-03-08 02:33:37 -05:00
pthread_mutexattr_getrobust.c implement robust mutexes 2011-03-17 20:41:37 -04:00
pthread_mutexattr_gettype.c initial check-in, version 0.5.0 2011-02-12 00:22:29 -05:00
pthread_mutexattr_init.c initial check-in, version 0.5.0 2011-02-12 00:22:29 -05:00
pthread_mutexattr_setpshared.c implement pthread_mutexattr_[gs]etpshared functions 2011-03-08 02:33:37 -05:00
pthread_mutexattr_setrobust.c implement robust mutexes 2011-03-17 20:41:37 -04:00
pthread_mutexattr_settype.c initial check-in, version 0.5.0 2011-02-12 00:22:29 -05:00
pthread_once.c fix major breakage in pthread_once (it was always deadlocking) 2011-03-08 12:08:40 -05:00
pthread_rwlock_destroy.c initial check-in, version 0.5.0 2011-02-12 00:22:29 -05:00
pthread_rwlock_init.c initial check-in, version 0.5.0 2011-02-12 00:22:29 -05:00
pthread_rwlock_rdlock.c reorganize pthread data structures and move the definitions to alltypes.h 2011-02-17 17:16:20 -05:00
pthread_rwlock_timedrdlock.c reorganize pthread data structures and move the definitions to alltypes.h 2011-02-17 17:16:20 -05:00
pthread_rwlock_timedwrlock.c reorganize pthread data structures and move the definitions to alltypes.h 2011-02-17 17:16:20 -05:00
pthread_rwlock_tryrdlock.c rwlock trylock functions were wrongly returning EAGAIN instead of EBUSY 2011-03-08 12:19:30 -05:00
pthread_rwlock_trywrlock.c rwlock trylock functions were wrongly returning EAGAIN instead of EBUSY 2011-03-08 12:19:30 -05:00
pthread_rwlock_unlock.c reorganize pthread data structures and move the definitions to alltypes.h 2011-02-17 17:16:20 -05:00
pthread_rwlock_wrlock.c reorganize pthread data structures and move the definitions to alltypes.h 2011-02-17 17:16:20 -05:00
pthread_rwlockattr_destroy.c implement pthread_rwlockattr_* (essentially no-ops) 2011-03-07 16:43:25 -05:00
pthread_rwlockattr_getpshared.c implement pthread_rwlockattr_* (essentially no-ops) 2011-03-07 16:43:25 -05:00
pthread_rwlockattr_init.c implement pthread_rwlockattr_* (essentially no-ops) 2011-03-07 16:43:25 -05:00
pthread_rwlockattr_setpshared.c implement pthread_rwlockattr_* (essentially no-ops) 2011-03-07 16:43:25 -05:00
pthread_self.c optimize cancellation enable/disable code 2011-04-17 13:21:13 -04:00
pthread_setcancelstate.c optimize cancellation enable/disable code 2011-04-17 13:21:13 -04:00
pthread_setcanceltype.c optimize cancellation enable/disable code 2011-04-17 13:21:13 -04:00
pthread_setspecific.c optimize POSIX TSD for fast pthread_getspecific 2011-03-03 18:30:44 -05:00
pthread_sigmask.c fix error handling for pthread_sigmask 2011-03-09 20:31:06 -05:00
pthread_spin_destroy.c initial check-in, version 0.5.0 2011-02-12 00:22:29 -05:00
pthread_spin_init.c initial check-in, version 0.5.0 2011-02-12 00:22:29 -05:00
pthread_spin_lock.c revert some more spin optimizations that turned out to be pessimizations 2011-03-28 22:36:55 -04:00
pthread_spin_trylock.c revert some more spin optimizations that turned out to be pessimizations 2011-03-28 22:36:55 -04:00
pthread_spin_unlock.c prepare pthread_spin_unlock for archs that need memory barriers 2011-03-24 23:06:48 -04:00
pthread_testcancel.c overhaul pthread cancellation 2011-04-17 11:43:03 -04:00
sem_destroy.c implement POSIX semaphores 2011-03-04 00:45:59 -05:00
sem_getvalue.c implement POSIX semaphores 2011-03-04 00:45:59 -05:00
sem_init.c implement POSIX semaphores 2011-03-04 00:45:59 -05:00
sem_open.c fix failure behavior of sem_open when sem does not exist 2011-03-10 22:05:16 -05:00
sem_post.c major semaphore improvements (performance and correctness) 2011-04-06 12:24:34 -04:00
sem_timedwait.c overhaul pthread cancellation 2011-04-17 11:43:03 -04:00
sem_trywait.c change sem_trywait algorithm so it never has to call __wake 2011-04-14 15:10:50 -04:00
sem_unlink.c implement POSIX semaphores 2011-03-04 00:45:59 -05:00
sem_wait.c implement POSIX semaphores 2011-03-04 00:45:59 -05:00
syscall_cp.c overhaul pthread cancellation 2011-04-17 11:43:03 -04:00