1 /* Copyright (C) 2002, 2003, 2004 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, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
38 size_t ps = sysconf (_SC_PAGESIZE);
39 char tmpfname[] = "/tmp/tst-cond6.XXXXXX";
43 pthread_mutexattr_t ma;
44 pthread_mutex_t *mut1;
45 pthread_mutex_t *mut2;
46 pthread_condattr_t ca;
51 fd = mkstemp (tmpfname);
54 printf ("cannot open temporary file: %m\n");
58 /* Make sure it is always removed. */
61 /* Create one page of data. */
62 memset (data, '\0', ps);
64 /* Write the data to the file. */
65 if (write (fd, data, ps) != (ssize_t) ps)
71 mem = mmap (NULL, ps, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
72 if (mem == MAP_FAILED)
74 printf ("mmap failed: %m\n");
78 mut1 = (pthread_mutex_t *) (((uintptr_t) mem
79 + __alignof (pthread_mutex_t))
80 & ~(__alignof (pthread_mutex_t) - 1));
83 cond = (pthread_cond_t *) (((uintptr_t) (mut2 + 1)
84 + __alignof (pthread_cond_t))
85 & ~(__alignof (pthread_cond_t) - 1));
87 condition = (int *) (((uintptr_t) (cond + 1) + __alignof (int))
88 & ~(__alignof (int) - 1));
90 if (pthread_mutexattr_init (&ma) != 0)
92 puts ("mutexattr_init failed");
96 if (pthread_mutexattr_setpshared (&ma, PTHREAD_PROCESS_SHARED) != 0)
98 puts ("mutexattr_setpshared failed");
102 if (pthread_mutex_init (mut1, &ma) != 0)
104 puts ("1st mutex_init failed");
108 if (pthread_mutex_init (mut2, &ma) != 0)
110 puts ("2nd mutex_init failed");
114 if (pthread_condattr_init (&ca) != 0)
116 puts ("condattr_init failed");
120 if (pthread_condattr_setpshared (&ca, PTHREAD_PROCESS_SHARED) != 0)
122 puts ("condattr_setpshared failed");
126 if (pthread_cond_init (cond, &ca) != 0)
128 puts ("cond_init failed");
132 if (pthread_mutex_lock (mut1) != 0)
134 puts ("parent: 1st mutex_lock failed");
138 puts ("going to fork now");
142 puts ("fork failed");
150 if (pthread_mutex_lock (mut2) != 0)
152 puts ("child: mutex_lock failed");
156 if (pthread_mutex_unlock (mut1) != 0)
158 puts ("child: 1st mutex_unlock failed");
162 if (gettimeofday (&tv, NULL) != 0)
164 puts ("gettimeofday failed");
168 TIMEVAL_TO_TIMESPEC (&tv, &ts);
169 ts.tv_nsec += 500000000;
170 if (ts.tv_nsec >= 1000000000)
172 ts.tv_nsec -= 1000000000;
177 if (pthread_cond_timedwait (cond, mut2, &ts) != 0)
179 puts ("child: cond_wait failed");
182 while (*condition == 0);
184 if (pthread_mutex_unlock (mut2) != 0)
186 puts ("child: 2nd mutex_unlock failed");
196 if (pthread_mutex_lock (mut1) != 0)
198 puts ("parent: 2nd mutex_lock failed");
202 if (pthread_mutex_lock (mut2) != 0)
204 puts ("parent: 3rd mutex_lock failed");
208 if (pthread_cond_signal (cond) != 0)
210 puts ("parent: cond_signal failed");
216 if (pthread_mutex_unlock (mut2) != 0)
218 puts ("parent: mutex_unlock failed");
222 puts ("waiting for child");
224 waitpid (pid, &status, 0);
227 puts ("parent done");
233 #define TEST_FUNCTION do_test ()
234 #include "../test-skeleton.c"