1 /* Copyright (C) 2003-2022 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 <pthread.h>
20 #include <signal.h>
21 #include <stdio.h>
22 #include <stdlib.h>
23 #include <string.h>
24 #include <sys/time.h>
25 #include <support/check.h>
26 #include <support/timespec.h>
27 #include <support/xtime.h>
28
29 #include "eintr.c"
30
31
32 static pthread_mutex_t m1 = PTHREAD_MUTEX_INITIALIZER;
33 static pthread_mutex_t m2 = PTHREAD_MUTEX_INITIALIZER;
34
35
36 static void *
tf1(void * arg)37 tf1 (void *arg)
38 {
39 struct timespec ts = timespec_add (xclock_now (CLOCK_REALTIME),
40 make_timespec (10000, 0));
41
42 /* This call must never return. */
43 int e = pthread_mutex_timedlock (&m1, &ts);
44 char buf[100];
45 printf ("tf1: mutex_timedlock returned: %s\n",
46 strerror_r (e, buf, sizeof (buf)));
47
48 exit (1);
49 }
50
51
52 static void *
tf2(void * arg)53 tf2 (void *arg)
54 {
55 while (1)
56 {
57 TEST_COMPARE (pthread_mutex_lock (&m2), 0);
58 TEST_COMPARE (pthread_mutex_unlock (&m2), 0);
59
60 struct timespec ts = { .tv_sec = 0, .tv_nsec = 10000000 };
61 nanosleep (&ts, NULL);
62 }
63 return NULL;
64 }
65
66
67 static int
do_test(void)68 do_test (void)
69 {
70 TEST_COMPARE (pthread_mutex_lock (&m1), 0);
71
72 setup_eintr (SIGUSR1, NULL);
73
74 char buf[100];
75 xpthread_create (NULL, tf1, NULL);
76 xpthread_create (NULL, tf2, NULL);
77
78 delayed_exit (3);
79 /* This call must never return. */
80 int e = pthread_mutex_lock (&m1);
81 printf ("main: mutex_lock returned: %s\n",
82 strerror_r (e, buf, sizeof (buf)));
83
84 return 1;
85 }
86
87 #include <support/test-driver.c>
88