/* Copyright (C) 2003-2015 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2003. 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, see <http://www.gnu.org/licenses/>. */ #include <error.h> #include <pthread.h> #include <stdbool.h> #include <stdio.h> #include <stdlib.h> #define N 10 #define ROUNDS 100 static pthread_cond_t cond = PTHREAD_COND_INITIALIZER; static pthread_mutex_t mut = PTHREAD_MUTEX_INITIALIZER; static pthread_barrier_t bN1; static pthread_barrier_t b2; static void * tf (void *p) { if (pthread_mutex_lock (&mut) != 0) { puts ("child: 1st mutex_lock failed"); exit (1); } int e = pthread_barrier_wait (&b2); if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD) { puts ("child: 1st barrier_wait failed"); exit (1); } if (pthread_cond_wait (&cond, &mut) != 0) { puts ("child: cond_wait failed"); exit (1); } if (pthread_mutex_unlock (&mut) != 0) { puts ("child: mutex_unlock failed"); exit (1); } e = pthread_barrier_wait (&bN1); if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD) { puts ("child: 2nd barrier_wait failed"); exit (1); } return NULL; } static int do_test (void) { if (pthread_barrier_init (&bN1, NULL, N + 1) != 0) { puts ("barrier_init failed"); exit (1); } if (pthread_barrier_init (&b2, NULL, 2) != 0) { puts ("barrier_init failed"); exit (1); } pthread_attr_t at; if (pthread_attr_init (&at) != 0) { puts ("attr_init failed"); return 1; } if (pthread_attr_setstacksize (&at, 1 * 1024 * 1024) != 0) { puts ("attr_setstacksize failed"); return 1; } int r; for (r = 0; r < ROUNDS; ++r) { printf ("round %d\n", r + 1); int i; pthread_t th[N]; for (i = 0; i < N; ++i) { if (pthread_create (&th[i], &at, tf, NULL) != 0) { puts ("create failed"); exit (1); } int e = pthread_barrier_wait (&b2); if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD) { puts ("parent: 1st barrier_wait failed"); exit (1); } } if (pthread_mutex_lock (&mut) != 0) { puts ("parent: mutex_lock failed"); exit (1); } if (pthread_mutex_unlock (&mut) != 0) { puts ("parent: mutex_unlock failed"); exit (1); } /* N single signal calls. Without locking. This tests that no signal gets lost. */ for (i = 0; i < N; ++i) if (pthread_cond_signal (&cond) != 0) { puts ("cond_signal failed"); exit (1); } int e = pthread_barrier_wait (&bN1); if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD) { puts ("parent: 2nd barrier_wait failed"); exit (1); } for (i = 0; i < N; ++i) if (pthread_join (th[i], NULL) != 0) { puts ("join failed"); exit (1); } } if (pthread_attr_destroy (&at) != 0) { puts ("attr_destroy failed"); return 1; } return 0; } #define TEST_FUNCTION do_test () #include "../test-skeleton.c"