1 /* Test SIGEV_THREAD handling for POSIX message queues.
2 Copyright (C) 2004-2015 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@redhat.com>, 2004.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <http://www.gnu.org/licenses/>. */
37 static const char message[] = "hello";
47 /* Put the mq in non-blocking mode. */
49 if (mq_getattr (m, &attr) != 0)
51 printf ("%s: mq_getattr failed: %m\n", __FUNCTION__);
54 attr.mq_flags |= O_NONBLOCK;
55 if (mq_setattr (m, &attr, NULL) != 0)
57 printf ("%s: mq_setattr failed: %m\n", __FUNCTION__);
61 /* Check the values. */
62 if (attr.mq_maxmsg != MAXMSG)
64 printf ("%s: mq_maxmsg wrong: is %jd, expecte %d\n",
65 __FUNCTION__, (intmax_t) attr.mq_maxmsg, MAXMSG);
68 if (attr.mq_msgsize != MAXMSG)
70 printf ("%s: mq_msgsize wrong: is %jd, expecte %d\n",
71 __FUNCTION__, (intmax_t) attr.mq_msgsize, MSGSIZE);
75 /* Read the message. */
76 char buf[attr.mq_msgsize];
77 ssize_t n = TEMP_FAILURE_RETRY (mq_receive (m, buf, attr.mq_msgsize, NULL));
78 if (n != sizeof (message))
80 printf ("%s: length of message wrong: is %zd, expected %zu\n",
81 __FUNCTION__, n, sizeof (message));
84 if (memcmp (buf, message, sizeof (message)) != 0)
86 printf ("%s: message wrong: is \"%s\", expected \"%s\"\n",
87 __FUNCTION__, buf, message);
98 char tmpfname[] = "/tmp/tst-mqueue3-barrier.XXXXXX";
99 int fd = mkstemp (tmpfname);
102 printf ("cannot open temporary file: %m\n");
106 /* Make sure it is always removed. */
109 /* Create one page of data. */
110 size_t ps = sysconf (_SC_PAGESIZE);
112 memset (data, '\0', ps);
114 /* Write the data to the file. */
115 if (write (fd, data, ps) != (ssize_t) ps)
117 puts ("short write");
121 void *mem = mmap (NULL, ps, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
122 if (mem == MAP_FAILED)
124 printf ("mmap failed: %m\n");
128 pthread_barrier_t *b;
129 b = (pthread_barrier_t *) (((uintptr_t) mem + __alignof (pthread_barrier_t))
130 & ~(__alignof (pthread_barrier_t) - 1));
132 pthread_barrierattr_t a;
133 if (pthread_barrierattr_init (&a) != 0)
135 puts ("barrierattr_init failed");
139 if (pthread_barrierattr_setpshared (&a, PTHREAD_PROCESS_SHARED) != 0)
141 puts ("barrierattr_setpshared failed, could not test");
145 if (pthread_barrier_init (b, &a, 2) != 0)
147 puts ("barrier_init failed");
151 if (pthread_barrierattr_destroy (&a) != 0)
153 puts ("barrierattr_destroy failed");
157 /* Name for the message queue. */
158 char mqname[sizeof ("/tst-mqueue3-") + 3 * sizeof (pid_t)];
159 snprintf (mqname, sizeof (mqname) - 1, "/tst-mqueue3-%ld",
160 (long int) getpid ());
162 /* Create the message queue. */
163 struct mq_attr attr = { .mq_maxmsg = MAXMSG, .mq_msgsize = MSGSIZE };
164 m = mq_open (mqname, O_CREAT | O_EXCL | O_RDWR, 0600, &attr);
169 puts ("not implemented");
173 puts ("mq_open failed");
177 /* Unlink the message queue right away. */
178 if (mq_unlink (mqname) != 0)
180 puts ("mq_unlink failed");
187 puts ("fork failed");
192 /* Request notification via thread. */
194 ev.sigev_notify = SIGEV_THREAD;
195 ev.sigev_notify_function = fct;
196 ev.sigev_value.sival_ptr = NULL;
197 ev.sigev_notify_attributes = NULL;
199 /* Tell the kernel. */
200 if (mq_notify (m,&ev) != 0)
202 puts ("mq_notify failed");
206 /* Tell the parent we are ready. */
207 (void) pthread_barrier_wait (b);
209 /* Make sure the process goes away eventually. */
212 /* Do nothing forever. */
217 /* Wait for the child process to register to notification method. */
218 (void) pthread_barrier_wait (b);
220 /* Send the message. */
221 if (mq_send (m, message, sizeof (message), 1) != 0)
224 puts ("mq_send failed");
229 if (TEMP_FAILURE_RETRY (waitpid (pid, &r, 0)) != pid)
232 puts ("waitpid failed");
236 return WIFEXITED (r) && WEXITSTATUS (r) == UNIQUE ? 0 : 1;
238 # define TEST_FUNCTION do_test ()
240 # define TEST_FUNCTION 0
243 #include "../test-skeleton.c"