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/* A small multi-threaded test case.
Copyright 2004-2016 Free Software Foundation, Inc.
This file is part of GDB.
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 <stdio.h>
#include <time.h>
void
cond_wait (pthread_cond_t *cond, pthread_mutex_t *mut)
{
pthread_mutex_lock(mut);
pthread_cond_wait (cond, mut);
pthread_mutex_unlock (mut);
}
void
noreturn (void)
{
pthread_mutex_t mut;
pthread_cond_t cond;
pthread_mutex_init (&mut, NULL);
pthread_cond_init (&cond, NULL);
/* Wait for a condition that will never be signaled, so we effectively
block the thread here. */
cond_wait (&cond, &mut);
}
void *
forever_pthread (void *unused)
{
noreturn ();
}
void
break_me (void)
{
/* Just an anchor to help putting a breakpoint. */
}
int
main (void)
{
pthread_t forever;
const struct timespec ts = { 0, 10000000 }; /* 0.01 sec */
pthread_create (&forever, NULL, forever_pthread, NULL);
for (;;)
{
nanosleep (&ts, NULL);
break_me();
}
return 0;
}
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