/* Copyright (C) 2004 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Jakub Jelinek <jakub@redhat.com>, 2004. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ #include <pthread.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #define N 10 #define ROUNDS 1000 static pthread_cond_t cond = PTHREAD_COND_INITIALIZER; static pthread_cond_t cond2 = PTHREAD_COND_INITIALIZER; static pthread_mutex_t mut = PTHREAD_MUTEX_INITIALIZER; static pthread_barrier_t b; static int count; static void * tf (void *p) { int i; for (i = 0; i < ROUNDS; ++i) { pthread_mutex_lock (&mut); if (++count == N) pthread_cond_signal (&cond2); #ifdef TIMED struct timeval tv; gettimeofday (&tv, NULL); struct timespec ts; /* Wait three seconds. */ ts.tv_sec = tv.tv_sec + 3; ts.tv_nsec = tv.tv_usec * 1000; pthread_cond_timedwait (&cond, &mut, &ts); #else pthread_cond_wait (&cond, &mut); #endif pthread_mutex_unlock (&mut); int err = pthread_barrier_wait (&b); if (err != 0 && err != PTHREAD_BARRIER_SERIAL_THREAD) { puts ("child: barrier_wait failed"); exit (1); } err = pthread_barrier_wait (&b); if (err != 0 && err != PTHREAD_BARRIER_SERIAL_THREAD) { puts ("child: barrier_wait failed"); exit (1); } } return NULL; } static int do_test (void) { if (pthread_barrier_init (&b, NULL, N + 1) != 0) { puts ("barrier_init failed"); return 1; } pthread_mutex_lock (&mut); int i, j, err; pthread_t th[N]; for (i = 0; i < N; ++i) if ((err = pthread_create (&th[i], NULL, tf, NULL)) != 0) { printf ("cannot create thread %d: %s\n", i, strerror (err)); return 1; } for (i = 0; i < ROUNDS; ++i) { pthread_cond_wait (&cond2, &mut); if (i & 1) pthread_mutex_unlock (&mut); if (i & 2) pthread_cond_broadcast (&cond); else if (i & 4) for (j = 0; j < N; ++j) pthread_cond_signal (&cond); else { for (j = 0; j < (i / 8) % N; ++j) pthread_cond_signal (&cond); pthread_cond_broadcast (&cond); } if ((i & 1) == 0) pthread_mutex_unlock (&mut); err = pthread_cond_destroy (&cond); if (err) { printf ("pthread_cond_destroy failed: %s\n", strerror (err)); return 1; } /* Now clobber the cond variable which has been successfully destroyed above. */ memset (&cond, (char) i, sizeof (cond)); err = pthread_barrier_wait (&b); if (err != 0 && err != PTHREAD_BARRIER_SERIAL_THREAD) { puts ("parent: barrier_wait failed"); return 1; } pthread_mutex_lock (&mut); err = pthread_barrier_wait (&b); if (err != 0 && err != PTHREAD_BARRIER_SERIAL_THREAD) { puts ("parent: barrier_wait failed"); return 1; } count = 0; err = pthread_cond_init (&cond, NULL); if (err) { printf ("pthread_cond_init failed: %s\n", strerror (err)); return 1; } } for (i = 0; i < N; ++i) if ((err = pthread_join (th[i], NULL)) != 0) { printf ("failed to join thread %d: %s\n", i, strerror (err)); return 1; } puts ("done"); return 0; } #define TEST_FUNCTION do_test () #include "../test-skeleton.c"