/* Copyright (C) 2003, 2004 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 <errno.h> #include <pthread.h> #include <semaphore.h> #include <signal.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> static pthread_t receiver; static sem_t sem; static pthread_barrier_t b; static void handler (int sig) { if (sig != SIGUSR1) { write (STDOUT_FILENO, "wrong signal\n", 13); _exit (1); } if (pthread_self () != receiver) { write (STDOUT_FILENO, "not the intended receiver\n", 26); _exit (1); } if (sem_post (&sem) != 0) { write (STDOUT_FILENO, "sem_post failed\n", 16); _exit (1); } } static void * tf (void *a) { int e = pthread_barrier_wait (&b); if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD) { puts ("child: barrier_wait failed"); exit (1); } return NULL; } int do_test (void) { struct sigaction sa; sigemptyset (&sa.sa_mask); sa.sa_flags = 0; sa.sa_handler = handler; if (sigaction (SIGUSR1, &sa, NULL) != 0) { puts ("sigaction failed"); exit (1); } #define N 20 if (pthread_barrier_init (&b, NULL, N + 1) != 0) { puts ("barrier_init failed"); exit (1); } pthread_attr_t a; if (pthread_attr_init (&a) != 0) { puts ("attr_init failed"); exit (1); } if (pthread_attr_setstacksize (&a, 1 * 1024 * 1024) != 0) { puts ("attr_setstacksize failed"); return 1; } pthread_t th[N]; int i; for (i = 0; i < N; ++i) if (pthread_create (&th[i], &a, tf, NULL) != 0) { puts ("create failed"); exit (1); } if (pthread_attr_destroy (&a) != 0) { puts ("attr_destroy failed"); exit (1); } if (sem_init (&sem, 0, 0) != 0) { puts ("sem_init failed"); exit (1); } for (i = 0; i < N * 10; ++i) { receiver = th[i % N]; if (pthread_kill (receiver, SIGUSR1) != 0) { puts ("kill failed"); exit (1); } if (TEMP_FAILURE_RETRY (sem_wait (&sem)) != 0) { puts ("sem_wait failed"); exit (1); } } int e = pthread_barrier_wait (&b); if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD) { puts ("barrier_wait failed"); exit (1); } for (i = 0; i < N; ++i) if (pthread_join (th[i], NULL) != 0) { puts ("join failed"); exit (1); } return 0; } #define TEST_FUNCTION do_test () #include "../test-skeleton.c"