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https://github.com/jart/cosmopolitan.git
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f2af97711b
- Improve compatibility with Blink virtual machine - Add non-POSIX APIs for joining threads and signal masks - Never ever use anything except 32-bit integers for atomics - Add some `#undef` statements to workaround `ctags` problems
43 lines
2.8 KiB
C
43 lines
2.8 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2022 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/thread/thread2.h"
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/**
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* Joins thread if it's already terminated.
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*
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* Multiple threads joining the same thread is undefined behavior. If a
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* deferred or masked cancellation happens to the calling thread either
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* before or during the waiting process then the target thread will not
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* be joined. Calling pthread_join() on a non-joinable thread, e.g. one
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* that's been detached, is undefined behavior. If a thread attempts to
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* join itself, then the behavior is undefined.
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*
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* @param value_ptr if non-null will receive pthread_exit() argument
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* if the thread called pthread_exit(), or `PTHREAD_CANCELED` if
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* pthread_cancel() destroyed the thread instead
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* @return 0 on success, or errno on error
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* @raise ECANCELED if calling thread was cancelled in masked mode
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* @cancellationpoint
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* @returnserrno
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* @threadsafe
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*/
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errno_t pthread_tryjoin_np(pthread_t thread, void **value_ptr) {
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return pthread_timedjoin_np(thread, value_ptr, ×pec_zero);
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}
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