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/* Copyright (C) 2002-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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 <time.h>
#include <unistd.h>
#include <sys/time.h>
#include <support/check.h>
#include <support/timespec.h>
#include <support/xtime.h>
/* A bogus clock value that tells run_test to use sem_timedwait rather than
sem_clockwait. */
#define CLOCK_USE_TIMEDWAIT (-1)
static void
do_test_clock (clockid_t clockid)
{
const clockid_t clockid_for_get =
clockid == CLOCK_USE_TIMEDWAIT ? CLOCK_REALTIME : clockid;
sem_t s;
struct timespec ts;
TEST_COMPARE (sem_init (&s, 0, 1), 0);
TEST_COMPARE (TEMP_FAILURE_RETRY (sem_wait (&s)), 0);
/* We wait for half a second. */
xclock_gettime (clockid_for_get, &ts);
ts = timespec_add (ts, make_timespec (0, TIMESPEC_HZ/2));
errno = 0;
TEST_COMPARE (TEMP_FAILURE_RETRY ((clockid == CLOCK_USE_TIMEDWAIT)
? sem_timedwait (&s, &ts)
: sem_clockwait (&s, clockid, &ts)), -1);
TEST_COMPARE (errno, ETIMEDOUT);
TEST_TIMESPEC_NOW_OR_AFTER (clockid_for_get, ts);
}
static int do_test (void)
{
do_test_clock (CLOCK_USE_TIMEDWAIT);
do_test_clock (CLOCK_REALTIME);
do_test_clock (CLOCK_MONOTONIC);
return 0;
}
#include <support/test-driver.c>
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