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89 lines
1.9 KiB
C
89 lines
1.9 KiB
C
/* Copyright (C) 2002-2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <semaphore.h>
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#include <stdio.h>
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#include <unistd.h>
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static int
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do_test (void)
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{
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sem_t s;
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if (sem_init (&s, 0, 1) == -1)
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{
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puts ("init failed");
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return 1;
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}
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if (TEMP_FAILURE_RETRY (sem_wait (&s)) == -1)
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{
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puts ("1st wait failed");
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return 1;
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}
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if (sem_post (&s) == -1)
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{
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puts ("1st post failed");
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return 1;
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}
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if (TEMP_FAILURE_RETRY (sem_trywait (&s)) == -1)
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{
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puts ("1st trywait failed");
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return 1;
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}
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errno = 0;
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if (TEMP_FAILURE_RETRY (sem_trywait (&s)) != -1)
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{
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puts ("2nd trywait succeeded");
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return 1;
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}
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else if (errno != EAGAIN)
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{
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puts ("2nd trywait did not set errno to EAGAIN");
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return 1;
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}
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if (sem_post (&s) == -1)
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{
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puts ("2nd post failed");
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return 1;
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}
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if (TEMP_FAILURE_RETRY (sem_wait (&s)) == -1)
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{
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puts ("2nd wait failed");
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return 1;
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}
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if (sem_destroy (&s) == -1)
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{
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puts ("destroy failed");
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return 1;
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}
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return 0;
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}
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#define TEST_FUNCTION do_test ()
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#include "../test-skeleton.c"
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