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/>. */
33 size_t ps = sysconf (_SC_PAGESIZE);
34 char tmpfname[] = "/tmp/tst-barrier2.XXXXXX";
39 pthread_barrierattr_t a;
46 fd = mkstemp (tmpfname);
49 printf ("cannot open temporary file: %m\n");
53 /* Make sure it is always removed. */
56 /* Create one page of data. */
57 memset (data, '\0', ps);
59 /* Write the data to the file. */
60 if (write (fd, data, ps) != (ssize_t) ps)
66 mem = mmap (NULL, ps, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
67 if (mem == MAP_FAILED)
69 printf ("mmap failed: %m\n");
73 b = (pthread_barrier_t *) (((uintptr_t) mem + __alignof (pthread_barrier_t))
74 & ~(__alignof (pthread_barrier_t) - 1));
76 if (pthread_barrierattr_init (&a) != 0)
78 puts ("barrierattr_init failed");
82 if (pthread_barrierattr_getpshared (&a, &p) != 0)
84 puts ("1st barrierattr_getpshared failed");
88 if (p != PTHREAD_PROCESS_PRIVATE)
90 puts ("default pshared value wrong");
94 if (pthread_barrierattr_setpshared (&a, PTHREAD_PROCESS_SHARED) != 0)
96 puts ("barrierattr_setpshared failed");
100 if (pthread_barrierattr_getpshared (&a, &p) != 0)
102 puts ("2nd barrierattr_getpshared failed");
106 if (p != PTHREAD_PROCESS_SHARED)
108 puts ("pshared value after setpshared call wrong");
112 if (pthread_barrier_init (b, &a, 2) != 0)
114 puts ("barrier_init failed");
118 if (pthread_barrierattr_destroy (&a) != 0)
120 puts ("barrierattr_destroy failed");
124 puts ("going to fork now");
128 puts ("fork failed");
132 /* Just to be sure we don't hang forever. */
136 for (cnt = 0; cnt < N; ++cnt)
140 e = pthread_barrier_wait (b);
141 if (e == PTHREAD_BARRIER_SERIAL_THREAD)
145 printf ("%s: barrier_wait returned value %d != 0 and PTHREAD_BARRIER_SERIAL_THREAD\n",
146 pid == 0 ? "child" : "parent", e);
153 printf ("%s: was %d times the serial thread\n",
154 pid == 0 ? "child" : "parent", serials);
157 /* The child. Pass the number of times we had the serializing
158 thread back to the parent. */
161 if (waitpid (pid, &status, 0) != pid)
163 puts ("waitpid failed");
167 if (!WIFEXITED (status))
169 puts ("child exited abnormally");
173 if (WEXITSTATUS (status) + serials != N)
175 printf ("total number of serials is %d, expected %d\n",
176 WEXITSTATUS (status) + serials, N);
183 #define TEST_FUNCTION do_test ()
184 #include "../test-skeleton.c"