1 /* Copyright (C) 2002-2015 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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/>. */
34 size_t ps = sysconf (_SC_PAGESIZE);
35 char tmpfname[] = "/tmp/tst-cond4.XXXXXX";
39 pthread_mutexattr_t ma;
40 pthread_mutex_t *mut1;
41 pthread_mutex_t *mut2;
42 pthread_condattr_t ca;
48 fd = mkstemp (tmpfname);
51 printf ("cannot open temporary file: %m\n");
55 /* Make sure it is always removed. */
58 /* Create one page of data. */
59 memset (data, '\0', ps);
61 /* Write the data to the file. */
62 if (write (fd, data, ps) != (ssize_t) ps)
68 mem = mmap (NULL, ps, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
69 if (mem == MAP_FAILED)
71 printf ("mmap failed: %m\n");
75 mut1 = (pthread_mutex_t *) (((uintptr_t) mem
76 + __alignof (pthread_mutex_t))
77 & ~(__alignof (pthread_mutex_t) - 1));
80 cond = (pthread_cond_t *) (((uintptr_t) (mut2 + 1)
81 + __alignof (pthread_cond_t))
82 & ~(__alignof (pthread_cond_t) - 1));
84 condition = (int *) (((uintptr_t) (cond + 1) + __alignof (int))
85 & ~(__alignof (int) - 1));
87 if (pthread_mutexattr_init (&ma) != 0)
89 puts ("mutexattr_init failed");
93 if (pthread_mutexattr_getpshared (&ma, &p) != 0)
95 puts ("1st mutexattr_getpshared failed");
99 if (p != PTHREAD_PROCESS_PRIVATE)
101 puts ("default pshared value wrong");
105 if (pthread_mutexattr_setpshared (&ma, PTHREAD_PROCESS_SHARED) != 0)
107 puts ("mutexattr_setpshared failed");
111 if (pthread_mutexattr_getpshared (&ma, &p) != 0)
113 puts ("2nd mutexattr_getpshared failed");
117 if (p != PTHREAD_PROCESS_SHARED)
119 puts ("pshared value after setpshared call wrong");
123 if (pthread_mutex_init (mut1, &ma) != 0)
125 puts ("1st mutex_init failed");
129 if (pthread_mutex_init (mut2, &ma) != 0)
131 puts ("2nd mutex_init failed");
135 if (pthread_condattr_init (&ca) != 0)
137 puts ("condattr_init failed");
141 if (pthread_condattr_getpshared (&ca, &p) != 0)
143 puts ("1st condattr_getpshared failed");
147 if (p != PTHREAD_PROCESS_PRIVATE)
149 puts ("default value for pshared in condattr wrong");
153 if (pthread_condattr_setpshared (&ca, PTHREAD_PROCESS_SHARED) != 0)
155 puts ("condattr_setpshared failed");
159 if (pthread_condattr_getpshared (&ca, &p) != 0)
161 puts ("2nd condattr_getpshared failed");
165 if (p != PTHREAD_PROCESS_SHARED)
167 puts ("pshared condattr still not set");
171 if (pthread_cond_init (cond, &ca) != 0)
173 puts ("cond_init failed");
177 if (pthread_mutex_lock (mut1) != 0)
179 puts ("parent: 1st mutex_lock failed");
183 puts ("going to fork now");
187 puts ("fork failed");
192 if (pthread_mutex_lock (mut2) != 0)
194 puts ("child: mutex_lock failed");
198 if (pthread_mutex_unlock (mut1) != 0)
200 puts ("child: 1st mutex_unlock failed");
205 if (pthread_cond_wait (cond, mut2) != 0)
207 puts ("child: cond_wait failed");
210 while (*condition == 0);
212 if (pthread_mutex_unlock (mut2) != 0)
214 puts ("child: 2nd mutex_unlock failed");
224 if (pthread_mutex_lock (mut1) != 0)
226 puts ("parent: 2nd mutex_lock failed");
230 if (pthread_mutex_lock (mut2) != 0)
232 puts ("parent: 3rd mutex_lock failed");
236 if (pthread_cond_signal (cond) != 0)
238 puts ("parent: cond_signal failed");
244 if (pthread_mutex_unlock (mut2) != 0)
246 puts ("parent: mutex_unlock failed");
250 puts ("waiting for child");
252 waitpid (pid, &status, 0);
255 puts ("parent done");
261 #define TEST_FUNCTION do_test ()
262 #include "../test-skeleton.c"