mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-01 03:53:33 +00:00
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 -*-│
|
|
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
|
│ Copyright 2023 Justine Alexandra Roberts Tunney │
|
|
│ │
|
|
│ Permission to use, copy, modify, and/or distribute this software for │
|
|
│ any purpose with or without fee is hereby granted, provided that the │
|
|
│ above copyright notice and this permission notice appear in all copies. │
|
|
│ │
|
|
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
|
|
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
|
|
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
|
|
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
|
|
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
|
|
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
|
|
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
|
|
│ PERFORMANCE OF THIS SOFTWARE. │
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
|
#include "libc/atomic.h"
|
|
#include "libc/calls/calls.h"
|
|
#include "libc/calls/struct/sigaction.h"
|
|
#include "libc/runtime/clktck.h"
|
|
#include "libc/runtime/runtime.h"
|
|
#include "libc/sysv/consts/sa.h"
|
|
#include "libc/sysv/consts/sig.h"
|
|
#include "libc/testlib/testlib.h"
|
|
#include "libc/thread/thread.h"
|
|
|
|
jmp_buf jb;
|
|
int pfds[2];
|
|
atomic_bool isdone;
|
|
volatile bool canjmp;
|
|
|
|
void OnSignal(int sig) {
|
|
if (canjmp) {
|
|
canjmp = false;
|
|
longjmp(jb, 1);
|
|
}
|
|
}
|
|
|
|
void *ReadWorker(void *arg) {
|
|
int got;
|
|
char buf[8];
|
|
while (!isdone) {
|
|
if (!(got = setjmp(jb))) {
|
|
canjmp = true;
|
|
read(pfds[0], buf, sizeof(buf));
|
|
abort();
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
TEST(eintr, longjmp) {
|
|
pthread_t th;
|
|
struct sigaction sa = {
|
|
.sa_handler = OnSignal,
|
|
.sa_flags = SA_SIGINFO | SA_NODEFER,
|
|
};
|
|
sigaction(SIGUSR1, &sa, 0);
|
|
ASSERT_SYS(0, 0, pipe(pfds));
|
|
ASSERT_EQ(0, pthread_create(&th, 0, ReadWorker, 0));
|
|
for (int i = 0; i < 10; ++i) {
|
|
pthread_kill(th, SIGUSR1);
|
|
usleep(1. / CLK_TCK * 1e6);
|
|
}
|
|
isdone = true;
|
|
pthread_kill(th, SIGUSR1);
|
|
ASSERT_EQ(0, pthread_join(th, 0));
|
|
ASSERT_SYS(0, 0, close(pfds[1]));
|
|
ASSERT_SYS(0, 0, close(pfds[0]));
|
|
}
|