1 /* Check if pthread_mutex_clocklock with PRIO_INHERIT fails with clock
2 different than CLOCK_REALTIME.
3 Copyright (C) 2020-2021 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
18 <https://www.gnu.org/licenses/>. */
19
20 #include <pthread.h>
21 #include <errno.h>
22 #include <array_length.h>
23
24 #include <support/check.h>
25 #include <support/xthread.h>
26 #include <support/timespec.h>
27
28 static int
do_test(void)29 do_test (void)
30 {
31 const int types[] = {
32 PTHREAD_MUTEX_NORMAL,
33 PTHREAD_MUTEX_ERRORCHECK,
34 PTHREAD_MUTEX_RECURSIVE,
35 PTHREAD_MUTEX_ADAPTIVE_NP
36 };
37 const int robust[] = {
38 PTHREAD_MUTEX_STALLED,
39 PTHREAD_MUTEX_ROBUST
40 };
41 const struct {
42 int clk;
43 int r;
44 } clocks[] = {
45 { CLOCK_REALTIME, 0 },
46 { CLOCK_MONOTONIC, 0 },
47 { CLOCK_REALTIME_COARSE, EINVAL }
48 };
49
50 for (int t = 0; t < array_length (types); t++)
51 for (int r = 0; r < array_length (robust); r++)
52 for (int c = 0; c < array_length (clocks); c++)
53 {
54 pthread_mutexattr_t attr;
55 xpthread_mutexattr_init (&attr);
56 xpthread_mutexattr_setprotocol (&attr, PTHREAD_PRIO_INHERIT);
57 xpthread_mutexattr_settype (&attr, types[t]);
58 xpthread_mutexattr_setrobust (&attr, robust[r]);
59
60 pthread_mutex_t mtx;
61 xpthread_mutex_init (&mtx, &attr);
62
63 /* Uncontended case does not trigger any futex call. */
64 struct timespec tmo = timespec_add (xclock_now (clocks[c].clk),
65 make_timespec (0, 100000000));
66
67 TEST_COMPARE (pthread_mutex_clocklock (&mtx, clocks[c].clk, &tmo),
68 clocks[c].r);
69 if (clocks[c].r == 0)
70 TEST_COMPARE (pthread_mutex_unlock (&mtx), 0);
71
72 xpthread_mutex_destroy (&mtx);
73 }
74
75 return 0;
76 }
77
78 #include <support/test-driver.c>
79