/* Copyright (C) 2002 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. 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 <errno.h> #include <semaphore.h> #include <stdio.h> #include <unistd.h> static int do_test (void) { sem_t s; if (sem_init (&s, 0, 1) == -1) { puts ("init failed"); return 1; } if (TEMP_FAILURE_RETRY (sem_wait (&s)) == -1) { puts ("1st wait failed"); return 1; } if (sem_post (&s) == -1) { puts ("1st post failed"); return 1; } if (TEMP_FAILURE_RETRY (sem_trywait (&s)) == -1) { puts ("1st trywait failed"); return 1; } errno = 0; if (TEMP_FAILURE_RETRY (sem_trywait (&s)) != -1) { puts ("2nd trywait succeeded"); return 1; } else if (errno != EAGAIN) { puts ("2nd trywait did not set errno to EAGAIN"); return 1; } if (sem_post (&s) == -1) { puts ("2nd post failed"); return 1; } if (TEMP_FAILURE_RETRY (sem_wait (&s)) == -1) { puts ("2nd wait failed"); return 1; } if (sem_destroy (&s) == -1) { puts ("destroy failed"); return 1; } return 0; } #define TEST_FUNCTION do_test () #include "../test-skeleton.c"