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74 lines
1.6 KiB
C
74 lines
1.6 KiB
C
/* A small multi-threaded test case.
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Copyright 2004-2020 Free Software Foundation, Inc.
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This file is part of GDB.
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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 <pthread.h>
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#include <stdio.h>
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#include <time.h>
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void
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cond_wait (pthread_cond_t *cond, pthread_mutex_t *mut)
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{
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pthread_mutex_lock(mut);
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pthread_cond_wait (cond, mut);
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pthread_mutex_unlock (mut);
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}
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void
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noreturn (void)
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{
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pthread_mutex_t mut;
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pthread_cond_t cond;
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pthread_mutex_init (&mut, NULL);
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pthread_cond_init (&cond, NULL);
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/* Wait for a condition that will never be signaled, so we effectively
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block the thread here. */
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cond_wait (&cond, &mut);
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}
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void *
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forever_pthread (void *unused)
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{
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noreturn ();
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}
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void
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break_me (void)
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{
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/* Just an anchor to help putting a breakpoint. */
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}
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int
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main (void)
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{
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pthread_t forever;
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const struct timespec ts = { 0, 10000000 }; /* 0.01 sec */
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pthread_create (&forever, NULL, forever_pthread, NULL);
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for (;;)
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{
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nanosleep (&ts, NULL);
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break_me();
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}
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return 0;
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}
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