glibc/posix/tst-sched_rr_get_interval.c

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/* Test for sched_rr_get_interval
Copyright (C) 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 <time.h>
#include <sched.h>
#include <support/check.h>
static int
do_test (void)
{
struct timespec ts[2] = { { -1, -1 }, { -1, -1 } };
const struct sched_param param = {
.sched_priority = sched_get_priority_max (SCHED_RR) - 10,
};
int result = sched_setscheduler (0, SCHED_RR, &param);
if (result != 0)
FAIL_UNSUPPORTED ("sched_setscheduler error: %m\n");
TEST_COMPARE (sched_rr_get_interval (0, ts), 0);
/* Check if returned time values are correct. */
TEST_VERIFY (ts[0].tv_sec >= 0);
TEST_VERIFY (ts[0].tv_nsec >= 0 && ts[0].tv_nsec < 1000000000);
TEST_VERIFY (ts[1].tv_sec == -1 && ts[1].tv_nsec == -1);
return 0;
}
#include <support/test-driver.c>