1 /* Copyright (C) 2002-2022 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18 #include <errno.h>
19 #include <semaphore.h>
20 #include <time.h>
21 #include <unistd.h>
22 #include <sys/time.h>
23 #include <support/check.h>
24 #include <support/timespec.h>
25 #include <support/xtime.h>
26
27 /* A bogus clock value that tells run_test to use sem_timedwait rather than
28 sem_clockwait. */
29 #define CLOCK_USE_TIMEDWAIT (-1)
30
31 static void
do_test_clock(clockid_t clockid)32 do_test_clock (clockid_t clockid)
33 {
34 const clockid_t clockid_for_get =
35 clockid == CLOCK_USE_TIMEDWAIT ? CLOCK_REALTIME : clockid;
36 sem_t s;
37 struct timespec ts;
38
39 TEST_COMPARE (sem_init (&s, 0, 1), 0);
40 TEST_COMPARE (TEMP_FAILURE_RETRY (sem_wait (&s)), 0);
41
42 /* We wait for half a second. */
43 xclock_gettime (clockid_for_get, &ts);
44 ts = timespec_add (ts, make_timespec (0, TIMESPEC_HZ/2));
45
46 errno = 0;
47 TEST_COMPARE (TEMP_FAILURE_RETRY ((clockid == CLOCK_USE_TIMEDWAIT)
48 ? sem_timedwait (&s, &ts)
49 : sem_clockwait (&s, clockid, &ts)), -1);
50 TEST_COMPARE (errno, ETIMEDOUT);
51 TEST_TIMESPEC_NOW_OR_AFTER (clockid_for_get, ts);
52 }
53
do_test(void)54 static int do_test (void)
55 {
56 do_test_clock (CLOCK_USE_TIMEDWAIT);
57 do_test_clock (CLOCK_REALTIME);
58 do_test_clock (CLOCK_MONOTONIC);
59 return 0;
60 }
61
62 #include <support/test-driver.c>
63