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/* Copyright (C) 2002-2021 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, see
<https://www.gnu.org/licenses/>. */
#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"
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