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/* This testcase is part of GDB, the GNU debugger.
Copyright 2016-2023 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <pthread.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <assert.h>
#include <errno.h>
#include <string.h>
/* This barrier ensures we only reach the initial breakpoint after all
threads have started. */
pthread_barrier_t start_threads_barrier;
/* Many threads in order to be fairly sure the process exits while GDB
is detaching from each thread in the process, on targets that need
to detach from each thread individually. */
#define NTHREADS 256
/* GDB sets a watchpoint here. */
int globalvar = 1;
/* GDB reads this. */
int mypid;
/* Threads' entry point. */
void *
thread_function (void *arg)
{
pthread_barrier_wait (&start_threads_barrier);
_exit (0);
}
/* The fork child's entry point. */
void
child_function (void)
{
pthread_t threads[NTHREADS];
int i;
pthread_barrier_init (&start_threads_barrier, NULL, NTHREADS + 1);
for (i = 0; i < NTHREADS; i++)
pthread_create (&threads[i], NULL, thread_function, NULL);
pthread_barrier_wait (&start_threads_barrier);
exit (0);
}
/* This is defined by the .exp file if testing the multi-process
variant. */
#ifdef MULTIPROCESS
/* The fork parent's entry point. */
void
parent_function (pid_t child)
{
int status, ret;
alarm (300);
ret = waitpid (child, &status, 0);
if (ret == -1)
{
printf ("waitpid, errno=%d (%s)\n", errno, strerror (errno));
exit (1);
}
else if (WIFEXITED (status))
{
printf ("exited, status=%d\n", WEXITSTATUS (status));
exit (0);
}
else if (WIFSIGNALED (status))
{
printf ("signaled, sig=%d\n", WTERMSIG (status));
exit (2);
}
else
{
printf ("unexpected, status=%x\n", status);
exit (3);
}
}
#endif
int
main (void)
{
#ifdef MULTIPROCESS
pid_t child;
child = fork ();
if (child == -1)
return 1;
#endif
mypid = getpid ();
#ifdef MULTIPROCESS
if (child != 0)
parent_function (child);
else
#endif
child_function ();
/* Not reached. */
abort ();
}
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