1/* Test for sched_rr_get_interval
2 Copyright (C) 2021-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#include <time.h>
20#include <sched.h>
21#include <support/check.h>
22
23static int
24do_test (void)
25{
26 struct timespec ts[2] = { { -1, -1 }, { -1, -1 } };
27 const struct sched_param param = {
28 .sched_priority = sched_get_priority_max (SCHED_RR) - 10,
29 };
30 int result = sched_setscheduler (pid: 0, SCHED_RR, param: &param);
31
32 if (result != 0)
33 FAIL_UNSUPPORTED ("sched_setscheduler error: %m\n");
34
35 TEST_COMPARE (sched_rr_get_interval (0, ts), 0);
36
37 /* Check if returned time values are correct. */
38 TEST_VERIFY (ts[0].tv_sec >= 0);
39 TEST_VERIFY (ts[0].tv_nsec >= 0 && ts[0].tv_nsec < 1000000000);
40 TEST_VERIFY (ts[1].tv_sec == -1 && ts[1].tv_nsec == -1);
41
42 return 0;
43}
44
45#include <support/test-driver.c>
46

source code of glibc/posix/tst-sched_rr_get_interval.c