114 lines
2.4 KiB
C
114 lines
2.4 KiB
C
/* This testcase is part of GDB, the GNU debugger.
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Copyright 2021-2022 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include <assert.h>
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#include <errno.h>
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#include <poll.h>
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#include <pthread.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/wait.h>
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#include <unistd.h>
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#define NUM_FORKING_THREADS 12
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static pthread_barrier_t barrier;
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static volatile int should_exit = 0;
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static void
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sigusr1_handler (int sig, siginfo_t *siginfo, void *context)
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{
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should_exit = 1;
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}
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static void *
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forking_thread (void *arg)
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{
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/* Wait for all forking threads to have spawned before fork-spamming. */
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pthread_barrier_wait (&barrier);
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while (!should_exit)
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{
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pid_t pid = fork ();
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if (pid == 0)
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{
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/* Child */
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exit (8);
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}
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else
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{
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/* Parent */
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int status;
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int ret = waitpid (pid, &status, 0);
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assert (ret == pid);
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assert (WIFEXITED (status));
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assert (WEXITSTATUS (status) == 8);
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}
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}
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return NULL;
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}
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static void
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break_here_first (void)
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{
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}
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static pid_t my_pid;
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int
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main (void)
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{
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pthread_t forking_threads[NUM_FORKING_THREADS];
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int ret;
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struct sigaction sa;
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int i;
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/* Just to make sure we don't run for ever. */
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alarm (30);
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my_pid = getpid ();
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break_here_first ();
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pthread_barrier_init (&barrier, NULL, NUM_FORKING_THREADS);
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memset (&sa, 0, sizeof (sa));
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sa.sa_sigaction = sigusr1_handler;
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ret = sigaction (SIGUSR1, &sa, NULL);
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assert (ret == 0);
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for (i = 0; i < NUM_FORKING_THREADS; ++i)
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{
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ret = pthread_create (&forking_threads[i], NULL, forking_thread, NULL);
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assert (ret == 0);
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}
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for (i = 0; i < NUM_FORKING_THREADS; ++i)
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{
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ret = pthread_join (forking_threads[i], NULL);
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assert (ret == 0);
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}
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FILE *f = fopen (TOUCH_FILE_PATH, "w");
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assert (f != NULL);
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ret = fclose (f);
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assert (ret == 0);
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return 0;
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}
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