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/* This testcase is part of GDB, the GNU debugger.
Copyright 2014-2017 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 <signal.h>
#define NUM_THREADS 10
const int num_threads = NUM_THREADS;
/* Allow for as much timeout as DejaGnu wants, plus a bit of
slack. */
volatile unsigned int timeout = TIMEOUT;
#define SECONDS (timeout + 20)
pthread_t child_thread[NUM_THREADS];
volatile pthread_t signal_thread;
volatile int got_sig;
void
handler (int signo)
{
got_sig = 1;
}
void
loop_broke (void)
{
}
#define INF_LOOP \
do \
{ \
while (!got_sig) \
; \
} \
while (0)
void *
child_function (void *arg)
{
pthread_t self = pthread_self ();
while (1)
{
/* Reset the timer before going to INF_LOOP. */
alarm (SECONDS);
INF_LOOP; /* set thread breakpoint here */
loop_broke ();
}
}
int
main (void)
{
int res;
int i;
/* Call these early so that we're sure their PLTs are quickly
resolved now, instead of in the busy threads. */
pthread_kill (pthread_self (), 0);
alarm (0);
signal (SIGUSR1, handler);
for (i = 0; i < NUM_THREADS; i++)
{
res = pthread_create (&child_thread[i], NULL, child_function, NULL);
}
while (1)
{
pthread_kill (signal_thread, SIGUSR1); /* set kill breakpoint here */
/* Reset the timer before going to INF_LOOP. */
alarm (SECONDS);
INF_LOOP;
loop_broke ();
}
exit(EXIT_SUCCESS);
}
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