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e16a7d8f3b
`et` means `expandtab`. ```sh rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\) et\(.*\) :vi/vi: \1 xoet\2:vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)noet\(.*\):vi/vi: \1et\2 :vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)xoet\(.*\):vi/vi: \1noet\2:vi/' ```
73 lines
3.4 KiB
C
73 lines
3.4 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│ vi: set et 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/sig.internal.h"
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#include "libc/calls/syscall-sysv.internal.h"
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#include "libc/dce.h"
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#include "libc/errno.h"
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#include "libc/intrin/atomic.h"
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#include "libc/intrin/describeflags.internal.h"
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#include "libc/intrin/strace.internal.h"
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#include "libc/runtime/syslib.internal.h"
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#include "libc/sysv/consts/sicode.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 `sig` wasn't a legal signal
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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 err = 0;
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struct PosixThread *pt;
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pt = (struct PosixThread *)thread;
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if (!(1 <= sig && sig <= 64)) {
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err = EINVAL;
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} else if (thread == __get_tls()->tib_pthread) {
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err = raise(sig); // XNU will EDEADLK it otherwise
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} else if (atomic_load_explicit(&pt->pt_status, memory_order_acquire) >=
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kPosixThreadTerminated) {
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err = ESRCH;
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} else if (IsWindows()) {
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err = __sig_kill(pt, sig, SI_TKILL);
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} else {
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if (IsXnuSilicon()) {
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err = __syslib->__pthread_kill(_pthread_syshand(pt), sig);
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} else {
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int e = errno;
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if (sys_tkill(_pthread_tid(pt), sig, pt->tib)) {
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err = errno;
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errno = e;
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}
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}
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if (err == ESRCH) {
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err = 0; // we already reported this
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}
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}
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STRACE("pthread_kill(%d, %G) → %s", _pthread_tid(pt), sig,
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DescribeErrno(err));
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return err;
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}
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