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afe4de7d MC |
1 | /* Test pthread_cond_clockwait timeout. |
2 | ||
3 | Copyright (C) 2019 Free Software Foundation, Inc. | |
4 | This file is part of the GNU C Library. | |
5 | ||
6 | The GNU C Library is free software; you can redistribute it and/or | |
7 | modify it under the terms of the GNU Lesser General Public | |
8 | License as published by the Free Software Foundation; either | |
9 | version 2.1 of the License, or (at your option) any later version. | |
10 | ||
11 | The GNU C Library is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public | |
17 | License along with the GNU C Library; if not, see | |
5a82c748 | 18 | <https://www.gnu.org/licenses/>. */ |
afe4de7d MC |
19 | |
20 | #include <errno.h> | |
21 | #include <pthread.h> | |
22 | #include <stdio.h> | |
23 | #include <stdlib.h> | |
24 | #include <string.h> | |
25 | #include <time.h> | |
26 | #include <sys/time.h> | |
27 | #include <support/check.h> | |
28 | #include <support/timespec.h> | |
29 | #include <support/xthread.h> | |
30 | ||
31 | ||
32 | static pthread_mutex_t mut = PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP; | |
33 | static pthread_cond_t cond = PTHREAD_COND_INITIALIZER; | |
34 | ||
35 | ||
36 | static int | |
37 | do_test_clock (clockid_t clockid) | |
38 | { | |
39 | /* Get the mutex. */ | |
40 | xpthread_mutex_lock (&mut); | |
41 | ||
42 | /* Waiting for the condition will fail. But we want the timeout here. */ | |
43 | const struct timespec ts_now = xclock_now (clockid); | |
44 | const struct timespec ts_timeout = | |
45 | timespec_add (ts_now, make_timespec (0, 500000000)); | |
46 | ||
47 | /* In theory pthread_cond_clockwait could return zero here due to | |
48 | spurious wakeup. However that can't happen without a signal or an | |
49 | additional waiter. */ | |
50 | TEST_COMPARE (pthread_cond_clockwait (&cond, &mut, clockid, &ts_timeout), | |
51 | ETIMEDOUT); | |
52 | ||
53 | xpthread_mutex_unlock (&mut); | |
54 | ||
55 | return 0; | |
56 | } | |
57 | ||
58 | static int | |
59 | do_test (void) | |
60 | { | |
61 | do_test_clock (CLOCK_MONOTONIC); | |
62 | do_test_clock (CLOCK_REALTIME); | |
63 | return 0; | |
64 | } | |
65 | ||
66 | #include <support/test-driver.c> |