mirror of
https://github.com/jart/cosmopolitan.git
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b407327972
- clock_nanosleep() is now much faster on OpenBSD and NetBSD - Thread joining is now much faster on NetBSD - FreeBSD timestamps are now more accurate - Thread spawning now goes faster on XNU - Clean up the clone() code
51 lines
2.6 KiB
C
51 lines
2.6 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/calls/calls.h"
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#include "libc/calls/syscall_support-sysv.internal.h"
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#include "libc/errno.h"
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#include "libc/intrin/atomic.h"
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#include "libc/thread/posixthread.internal.h"
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#include "libc/thread/thread.h"
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/**
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* Sends signal to thread.
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*
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* @return 0 on success, or errno on error
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* @raise ESRCH if `tid` was valid but no such thread existed
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* @raise EAGAIN if `RLIMIT_SIGPENDING` was exceeded
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* @raise EINVAL if `tid` or `sig` was invalid
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* @raise EPERM if permission was denied
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* @asyncsignalsafe
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*/
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errno_t pthread_kill(pthread_t thread, int sig) {
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int e, rc, tid;
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struct PosixThread *p;
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if (!(rc = pthread_getunique_np(thread, &tid))) {
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e = errno;
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p = (struct PosixThread *)thread;
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if (!__tkill(tid, sig, p->tib)) {
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rc = 0;
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} else {
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rc = errno;
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errno = e;
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}
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}
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return rc;
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}
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