1 /* Copyright (C) 2003-2019 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
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.
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.
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 <http://www.gnu.org/licenses/>. */
29 #include <support/check.h>
30 #include <support/timespec.h>
31 #include <support/xunistd.h>
34 /* A bogus clock value that tells run_test to use pthread_mutex_timedlock
35 rather than pthread_mutex_clocklock. */
36 #define CLOCK_USE_TIMEDLOCK (-1)
39 do_test_clock (clockid_t clockid)
41 const clockid_t clockid_for_get =
42 (clockid == CLOCK_USE_TIMEDLOCK) ? CLOCK_REALTIME : clockid;
43 size_t ps = sysconf (_SC_PAGESIZE);
44 char tmpfname[] = "/tmp/tst-mutex9.XXXXXX";
49 pthread_mutexattr_t a;
52 fd = mkstemp (tmpfname);
54 FAIL_EXIT1 ("cannot open temporary file: %m\n");
56 /* Make sure it is always removed. */
59 /* Create one page of data. */
60 memset (data, '\0', ps);
62 /* Write the data to the file. */
63 xwrite (fd, data, ps);
65 mem = xmmap (NULL, ps, PROT_READ | PROT_WRITE, MAP_SHARED, fd);
67 m = (pthread_mutex_t *) (((uintptr_t) mem + __alignof (pthread_mutex_t))
68 & ~(__alignof (pthread_mutex_t) - 1));
70 TEST_COMPARE (pthread_mutexattr_init (&a), 0);
72 TEST_COMPARE (pthread_mutexattr_setpshared (&a, PTHREAD_PROCESS_SHARED), 0);
74 TEST_COMPARE (pthread_mutexattr_settype (&a, PTHREAD_MUTEX_RECURSIVE), 0);
77 TEST_COMPARE (pthread_mutexattr_setprotocol (&a, PTHREAD_PRIO_INHERIT), 0);
81 if ((e = pthread_mutex_init (m, &a)) != 0)
85 FAIL_UNSUPPORTED ("PI mutexes unsupported");
87 FAIL_EXIT1 ("mutex_init failed");
90 TEST_COMPARE (pthread_mutex_lock (m), 0);
92 TEST_COMPARE (pthread_mutexattr_destroy (&a), 0);
94 puts ("going to fork now");
98 if (pthread_mutex_trylock (m) == 0)
99 FAIL_EXIT1 ("child: mutex_trylock succeeded");
101 if (pthread_mutex_unlock (m) == 0)
102 FAIL_EXIT1 ("child: mutex_unlock succeeded");
104 const struct timespec ts = timespec_add (xclock_now (clockid_for_get),
105 make_timespec (0, 500000000));
107 if (clockid == CLOCK_USE_TIMEDLOCK)
108 TEST_COMPARE (pthread_mutex_timedlock (m, &ts), ETIMEDOUT);
110 TEST_COMPARE (pthread_mutex_clocklock (m, clockid, &ts), ETIMEDOUT);
114 pthread_mutex_lock (m);
116 puts ("child: mutex_lock returned");
124 if (TEMP_FAILURE_RETRY (waitpid (pid, &status, 0)) != pid)
125 FAIL_EXIT1 ("waitpid failed");
126 if (! WIFSIGNALED (status))
127 FAIL_EXIT1 ("child not killed by signal");
128 TEST_COMPARE (WTERMSIG (status), SIGALRM);
134 do_test_clock (CLOCK_USE_TIMEDLOCK);
135 do_test_clock (CLOCK_REALTIME);
136 do_test_clock (CLOCK_MONOTONIC);
140 #include <support/test-driver.c>