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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/' ```
72 lines
2.9 KiB
C
72 lines
2.9 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 2023 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/atomic.h"
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#include "libc/calls/calls.h"
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#include "libc/calls/struct/sigaction.h"
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#include "libc/runtime/clktck.h"
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#include "libc/runtime/runtime.h"
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#include "libc/sysv/consts/sa.h"
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#include "libc/sysv/consts/sig.h"
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#include "libc/testlib/testlib.h"
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#include "libc/thread/thread.h"
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jmp_buf jb;
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int pfds[2];
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atomic_bool isdone;
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volatile bool canjmp;
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void OnSignal(int sig) {
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if (canjmp) {
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canjmp = false;
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longjmp(jb, 1);
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}
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}
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void *ReadWorker(void *arg) {
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int got;
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char buf[8];
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while (!isdone) {
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if (!(got = setjmp(jb))) {
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canjmp = true;
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read(pfds[0], buf, sizeof(buf));
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abort();
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}
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}
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return 0;
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}
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TEST(eintr, longjmp) {
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pthread_t th;
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struct sigaction sa = {
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.sa_handler = OnSignal,
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.sa_flags = SA_SIGINFO | SA_NODEFER,
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};
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sigaction(SIGUSR1, &sa, 0);
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ASSERT_SYS(0, 0, pipe(pfds));
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ASSERT_EQ(0, pthread_create(&th, 0, ReadWorker, 0));
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for (int i = 0; i < 10; ++i) {
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pthread_kill(th, SIGUSR1);
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usleep(1. / CLK_TCK * 1e6);
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}
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isdone = true;
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pthread_kill(th, SIGUSR1);
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ASSERT_EQ(0, pthread_join(th, 0));
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ASSERT_SYS(0, 0, close(pfds[1]));
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ASSERT_SYS(0, 0, close(pfds[0]));
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}
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