mirror of
https://github.com/facebookexperimental/reverie.git
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1bbfa8a5a2
Reviewed By: johnhurt Differential Revision: D36727878 fbshipit-source-id: 2529052f6a81fb5a177ccdba51b7e0051577c148
68 lines
1.3 KiB
C
68 lines
1.3 KiB
C
/*
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* Copyright (c) Meta Platforms, Inc. and its affiliates.
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*
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#include <errno.h>
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#include <pthread.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/syscall.h>
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#include <sys/types.h>
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#include <unistd.h>
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static volatile int quit = 0;
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static void handler(int sig, siginfo_t* info, void* ucontext) {
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quit = 1;
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}
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void* thread_main(void* param) {
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struct timespec ts = {0, 100000000};
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nanosleep(&ts, NULL);
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_exit(1);
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}
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int main(int argc, char* argv[]) {
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int ret;
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sigset_t sigset;
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struct sigaction old, new;
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pthread_t tid;
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pthread_create(&tid, NULL, thread_main, (void*)1UL);
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memset(&old, 0, sizeof(old));
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memset(&new, 0, sizeof(new));
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sigemptyset(&sigset);
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new.sa_sigaction = handler;
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new.sa_mask = sigset;
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new.sa_flags = SA_RESTART | SA_SIGINFO;
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ret = sigaction(SIGALRM, &new, &old);
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if (ret < 0) {
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perror("rt_sigaction");
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exit(1);
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}
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ret = sigaction(SIGALRM, NULL, &old);
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if (ret < 0) {
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perror("rt_sigaction");
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exit(1);
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}
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assert((unsigned long)old.sa_sigaction == (unsigned long)handler);
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alarm(1);
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while (!quit)
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;
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return 0;
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}
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