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cosmopolitan/libc/thread
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Justine Tunney 624573207e
Make threads faster and more reliable 
This change doubles the performance of thread spawning. That's thanks to
our new stack manager, which allows us to avoid zeroing stacks. It gives
us 15µs spawns rather than 30µs spawns on Linux. Also, pthread_exit() is
faster now, since it doesn't need to acquire the pthread GIL. On NetBSD,
that helps us avoid allocating too many semaphores. Even if that happens
we're now able to survive semaphores running out and even memory running
out, when allocating *NSYNC waiter objects. I found a lot more rare bugs
in the POSIX threads runtime that could cause things to crash, if you've
got dozens of threads all spawning and joining dozens of threads. I want
cosmo to be world class production worthy for 2025 so happy holidays all
2024-12-21 22:13:00 -08:00
..
alarm.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
BUILD.mk Make malloc() go 200x faster 2024-06-05 02:02:14 -07:00
freebsd.internal.h Introduce pthread_condattr_setclock() 2024-09-02 23:45:42 -07:00
getitimer.c Get rid of .internal.h convention in LIBC_INTRIN 2024-07-19 19:38:00 -07:00
getstackbottom.c Rewrite memory manager 2024-06-22 05:45:11 -07:00
itimer.c Make threads faster and more reliable 2024-12-21 22:13:00 -08:00
itimer.h Make threads faster and more reliable 2024-12-21 22:13:00 -08:00
lock.h Eliminate cyclic locks in runtime 2024-12-16 22:25:12 -08:00
makecontext.c Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
mapstack.c Make threads faster and more reliable 2024-12-21 22:13:00 -08:00
mktls.c Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
openbsd.internal.h Rewrite memory manager 2024-06-22 05:45:11 -07:00
posixthread.internal.h Make threads faster and more reliable 2024-12-21 22:13:00 -08:00
pt.internal.h Improve multithreading 2024-07-21 14:40:45 -07:00
pthread_atfork.c Make threads faster and more reliable 2024-12-21 22:13:00 -08:00
pthread_attr_destroy.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
pthread_attr_getdetachstate.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
pthread_attr_getguardsize.c Improve multithreading 2024-07-21 14:40:45 -07:00
pthread_attr_getinheritsched.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
pthread_attr_getschedparam.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
pthread_attr_getschedpolicy.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
pthread_attr_getscope.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
pthread_attr_getsigaltstack_np.c Improve multithreading 2024-07-21 14:40:45 -07:00
pthread_attr_getsigaltstacksize_np.c Improve multithreading 2024-07-21 14:40:45 -07:00
pthread_attr_getsigmask_np.c Apply clang-format update to repo (#1154) 2024-04-25 10:38:00 -07:00
pthread_attr_getstack.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
pthread_attr_getstacksize.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
pthread_attr_init.c Make some improvements of little consequence 2024-07-27 08:20:18 -07:00
pthread_attr_setdetachstate.c Make threads faster and more reliable 2024-12-21 22:13:00 -08:00
pthread_attr_setguardsize.c Improve multithreading 2024-07-21 14:40:45 -07:00
pthread_attr_setinheritsched.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
pthread_attr_setschedparam.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
pthread_attr_setschedpolicy.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
pthread_attr_setscope.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
pthread_attr_setsigaltstack_np.c Improve multithreading 2024-07-21 14:40:45 -07:00
pthread_attr_setsigaltstacksize_np.c Improve multithreading 2024-07-21 14:40:45 -07:00
pthread_attr_setsigmask_np.c Make threads faster and more reliable 2024-12-21 22:13:00 -08:00
pthread_attr_setstack.c Improve multithreading 2024-07-21 14:40:45 -07:00
pthread_attr_setstacksize.c Improve multithreading 2024-07-21 14:40:45 -07:00
pthread_barrier_destroy.c Make more improvements to threads and mappings 2024-07-24 01:19:54 -07:00
pthread_barrier_init.c Make more improvements to threads and mappings 2024-07-24 01:19:54 -07:00
pthread_barrier_wait.c Introduce cosmo_futex_wait and cosmo_futex_wake 2024-11-22 11:25:15 -08:00
pthread_barrierattr_destroy.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
pthread_barrierattr_getpshared.c Make more improvements to threads and mappings 2024-07-24 01:19:54 -07:00
pthread_barrierattr_init.c Make more improvements to threads and mappings 2024-07-24 01:19:54 -07:00
pthread_barrierattr_setpshared.c Make more improvements to threads and mappings 2024-07-24 01:19:54 -07:00
pthread_cancel.c Fix bugs in poll(), select(), ppoll(), and pselect() 2024-09-02 00:29:52 -07:00
pthread_cond_broadcast.c Eliminate cyclic locks in runtime 2024-12-16 22:25:12 -08:00
pthread_cond_destroy.c Eliminate cyclic locks in runtime 2024-12-16 22:25:12 -08:00
pthread_cond_signal.c Eliminate cyclic locks in runtime 2024-12-16 22:25:12 -08:00
pthread_cond_timedwait.c Eliminate cyclic locks in runtime 2024-12-16 22:25:12 -08:00
pthread_cond_wait.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
pthread_condattr_destroy.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
pthread_condattr_getclock.c Delve into clock rabbit hole 2024-09-04 01:32:46 -07:00
pthread_condattr_getpshared.c Introduce pthread_condattr_setclock() 2024-09-02 23:45:42 -07:00
pthread_condattr_init.c Introduce pthread_condattr_setclock() 2024-09-02 23:45:42 -07:00
pthread_condattr_setclock.c Delve into clock rabbit hole 2024-09-04 01:32:46 -07:00
pthread_condattr_setpshared.c Introduce pthread_condattr_setclock() 2024-09-02 23:45:42 -07:00
pthread_create.c Make threads faster and more reliable 2024-12-21 22:13:00 -08:00
pthread_decimate_np.c Make threads faster and more reliable 2024-12-21 22:13:00 -08:00
pthread_detach.c Delve into clock rabbit hole 2024-09-04 01:32:46 -07:00
pthread_equal.c Add much of C11 threads.h API 2024-04-28 07:04:08 -07:00
pthread_exit.c Make threads faster and more reliable 2024-12-21 22:13:00 -08:00
pthread_getaffinity_np.c Make some improvements of little consequence 2024-07-27 08:20:18 -07:00
pthread_getattr_np.c Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
pthread_getname_np.c Remove .internal from more header filenames 2024-08-04 12:52:25 -07:00
pthread_getschedparam.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
pthread_getspecific.c Make malloc() go 200x faster 2024-06-05 02:02:14 -07:00
pthread_getthreadid_np.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
pthread_getunique_np.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
pthread_join.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
pthread_key_create.c Make POSIX threads improvements 2024-06-30 15:38:59 -07:00
pthread_key_delete.c Make POSIX threads improvements 2024-06-30 15:38:59 -07:00
pthread_kill.c Make threads faster and more reliable 2024-12-21 22:13:00 -08:00
pthread_once.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
pthread_reschedule.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
pthread_rwlock_destroy.c Support process shared pthread_rwlock 2024-12-13 03:00:06 -08:00
pthread_rwlock_init.c Support process shared pthread_rwlock 2024-12-13 03:00:06 -08:00
pthread_rwlock_rdlock.c Support process shared pthread_rwlock 2024-12-13 03:00:06 -08:00
pthread_rwlock_tryrdlock.c Support process shared pthread_rwlock 2024-12-13 03:00:06 -08:00
pthread_rwlock_trywrlock.c Support process shared pthread_rwlock 2024-12-13 03:00:06 -08:00
pthread_rwlock_unlock.c Support process shared pthread_rwlock 2024-12-13 03:00:06 -08:00
pthread_rwlock_wrlock.c Support process shared pthread_rwlock 2024-12-13 03:00:06 -08:00
pthread_rwlockattr_destroy.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
pthread_rwlockattr_getpshared.c Support process shared pthread_rwlock 2024-12-13 03:00:06 -08:00
pthread_rwlockattr_init.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
pthread_rwlockattr_setpshared.c Support process shared pthread_rwlock 2024-12-13 03:00:06 -08:00
pthread_self.c Add much of C11 threads.h API 2024-04-28 07:04:08 -07:00
pthread_setaffinity_np.c Make some improvements of little consequence 2024-07-27 08:20:18 -07:00
pthread_setcanceltype.c Get rid of .internal.h convention in LIBC_INTRIN 2024-07-19 19:38:00 -07:00
pthread_setname_np.c Get rid of .internal.h convention in LIBC_INTRIN 2024-07-19 19:38:00 -07:00
pthread_setschedparam.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
pthread_setschedparam_freebsd.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
pthread_setschedprio.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
pthread_sigmask.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
pthread_timedjoin_np.c Introduce cosmo_futex_wait and cosmo_futex_wake 2024-11-22 11:25:15 -08:00
pthread_tryjoin_np.c Work around copy_file_range() bug in eCryptFs 2024-09-29 16:35:38 -07:00
pthread_zombify.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
README.md Use *NSYNC for POSIX threads locking APIs 2022-09-11 11:04:50 -07:00
sem_destroy.c Speed up unnamed POSIX semaphores 2024-09-13 06:25:27 -07:00
sem_getvalue.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
sem_init.c Speed up unnamed POSIX semaphores 2024-09-13 06:25:27 -07:00
sem_open.c Make threads faster and more reliable 2024-12-21 22:13:00 -08:00
sem_post.c Introduce cosmo_futex_wait and cosmo_futex_wake 2024-11-22 11:25:15 -08:00
sem_timedwait.c Introduce cosmo_futex_wait and cosmo_futex_wake 2024-11-22 11:25:15 -08:00
sem_trywait.c Apply clang-format update to repo (#1154) 2024-04-25 10:38:00 -07:00
sem_wait.c flip et / noet in modelines 2023-12-07 22:17:11 -05:00
semaphore.h Remove bad defines from early days of project 2024-07-24 12:11:21 -07:00
setitimer.c Get rid of .internal.h convention in LIBC_INTRIN 2024-07-19 19:38:00 -07:00
thrd_create.c Add much of C11 threads.h API 2024-04-28 07:04:08 -07:00
thrd_detach.c Add much of C11 threads.h API 2024-04-28 07:04:08 -07:00
thrd_join.c Add much of C11 threads.h API 2024-04-28 07:04:08 -07:00
thread.h Make threads faster and more reliable 2024-12-21 22:13:00 -08:00
thread2.h Add dontthrow attribute to most libc functions 2024-01-09 01:26:03 -08:00
threads.h Remove more _Atomic keywords from public headers 2024-07-24 13:56:03 -07:00
tls.h Eliminate cyclic locks in runtime 2024-12-16 22:25:12 -08:00
ualarm.c Delve into clock rabbit hole 2024-09-04 01:32:46 -07:00
xnu.internal.h Reduce header complexity 2023-11-28 14:39:42 -08:00

README.md

Cosmpolitan POSIX Threads Library

Cosmopolitan Libc implements threading as it is written in The Open Group Base Specifications Issue 7, 2018 edition IEEE Std 1003.1-2017 (Revision of IEEE Std 1003.1-2008) in addition to GNU extensions.