Merge remote branch 'origin/master' into fedora/master
[glibc.git] / rt / tst-mqueue3.c
blob990e05728f83347b0e5980f883c835ab6163e5bf
1 /* Test SIGEV_THREAD handling for POSIX message queues.
2 Copyright (C) 2004 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, write to the Free
18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19 02111-1307 USA. */
21 #include <errno.h>
22 #include <mqueue.h>
23 #include <signal.h>
24 #include <stddef.h>
25 #include <stdint.h>
26 #include <stdio.h>
27 #include <stdlib.h>
28 #include <string.h>
29 #include <sys/mman.h>
30 #include <sys/wait.h>
31 #include <unistd.h>
33 #if _POSIX_THREADS
34 # include <pthread.h>
36 static pid_t pid;
37 static mqd_t m;
38 static const char message[] = "hello";
40 # define MAXMSG 10
41 # define MSGSIZE 10
42 # define UNIQUE 42
45 static void
46 fct (union sigval s)
48 /* Put the mq in non-blocking mode. */
49 struct mq_attr attr;
50 if (mq_getattr (m, &attr) != 0)
52 printf ("%s: mq_getattr failed: %m\n", __FUNCTION__);
53 exit (1);
55 attr.mq_flags |= O_NONBLOCK;
56 if (mq_setattr (m, &attr, NULL) != 0)
58 printf ("%s: mq_setattr failed: %m\n", __FUNCTION__);
59 exit (1);
62 /* Check the values. */
63 if (attr.mq_maxmsg != MAXMSG)
65 printf ("%s: mq_maxmsg wrong: is %ld, expecte %d\n",
66 __FUNCTION__, attr.mq_maxmsg, MAXMSG);
67 exit (1);
69 if (attr.mq_msgsize != MAXMSG)
71 printf ("%s: mq_msgsize wrong: is %ld, expecte %d\n",
72 __FUNCTION__, attr.mq_msgsize, MSGSIZE);
73 exit (1);
76 /* Read the message. */
77 char buf[attr.mq_msgsize];
78 ssize_t n = TEMP_FAILURE_RETRY (mq_receive (m, buf, attr.mq_msgsize, NULL));
79 if (n != sizeof (message))
81 printf ("%s: length of message wrong: is %zd, expected %zu\n",
82 __FUNCTION__, n, sizeof (message));
83 exit (1);
85 if (memcmp (buf, message, sizeof (message)) != 0)
87 printf ("%s: message wrong: is \"%s\", expected \"%s\"\n",
88 __FUNCTION__, buf, message);
89 exit (1);
92 exit (UNIQUE);
96 int
97 do_test (void)
99 char tmpfname[] = "/tmp/tst-mqueue3-barrier.XXXXXX";
100 int fd = mkstemp (tmpfname);
101 if (fd == -1)
103 printf ("cannot open temporary file: %m\n");
104 return 1;
107 /* Make sure it is always removed. */
108 unlink (tmpfname);
110 /* Create one page of data. */
111 size_t ps = sysconf (_SC_PAGESIZE);
112 char data[ps];
113 memset (data, '\0', ps);
115 /* Write the data to the file. */
116 if (write (fd, data, ps) != (ssize_t) ps)
118 puts ("short write");
119 return 1;
122 void *mem = mmap (NULL, ps, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
123 if (mem == MAP_FAILED)
125 printf ("mmap failed: %m\n");
126 return 1;
129 pthread_barrier_t *b;
130 b = (pthread_barrier_t *) (((uintptr_t) mem + __alignof (pthread_barrier_t))
131 & ~(__alignof (pthread_barrier_t) - 1));
133 pthread_barrierattr_t a;
134 if (pthread_barrierattr_init (&a) != 0)
136 puts ("barrierattr_init failed");
137 return 1;
140 if (pthread_barrierattr_setpshared (&a, PTHREAD_PROCESS_SHARED) != 0)
142 puts ("barrierattr_setpshared failed, could not test");
143 return 0;
146 if (pthread_barrier_init (b, &a, 2) != 0)
148 puts ("barrier_init failed");
149 return 1;
152 if (pthread_barrierattr_destroy (&a) != 0)
154 puts ("barrierattr_destroy failed");
155 return 1;
158 /* Name for the message queue. */
159 char mqname[sizeof ("/tst-mqueue3-") + 3 * sizeof (pid_t)];
160 snprintf (mqname, sizeof (mqname) - 1, "/tst-mqueue3-%ld",
161 (long int) getpid ());
163 /* Create the message queue. */
164 struct mq_attr attr = { .mq_maxmsg = MAXMSG, .mq_msgsize = MSGSIZE };
165 m = mq_open (mqname, O_CREAT | O_EXCL | O_RDWR, 0600, &attr);
166 if (m == -1)
168 if (errno == ENOSYS)
170 puts ("not implemented");
171 return 0;
174 puts ("mq_open failed");
175 return 1;
178 /* Unlink the message queue right away. */
179 if (mq_unlink (mqname) != 0)
181 puts ("mq_unlink failed");
182 return 1;
185 pid = fork ();
186 if (pid == -1)
188 puts ("fork failed");
189 return 1;
191 if (pid == 0)
193 /* Request notification via thread. */
194 struct sigevent ev;
195 ev.sigev_notify = SIGEV_THREAD;
196 ev.sigev_notify_function = fct;
197 ev.sigev_value.sival_ptr = NULL;
198 ev.sigev_notify_attributes = NULL;
200 /* Tell the kernel. */
201 if (mq_notify (m,&ev) != 0)
203 puts ("mq_notify failed");
204 exit (1);
207 /* Tell the parent we are ready. */
208 (void) pthread_barrier_wait (b);
210 /* Make sure the process goes away eventually. */
211 alarm (10);
213 /* Do nothing forever. */
214 while (1)
215 pause ();
218 /* Wait for the child process to register to notification method. */
219 (void) pthread_barrier_wait (b);
221 /* Send the message. */
222 if (mq_send (m, message, sizeof (message), 1) != 0)
224 kill (pid, SIGKILL);
225 puts ("mq_send failed");
226 return 1;
229 int r;
230 if (TEMP_FAILURE_RETRY (waitpid (pid, &r, 0)) != pid)
232 kill (pid, SIGKILL);
233 puts ("waitpid failed");
234 return 1;
237 return WIFEXITED (r) && WEXITSTATUS (r) == UNIQUE ? 0 : 1;
239 # define TEST_FUNCTION do_test ()
240 #else
241 # define TEST_FUNCTION 0
242 #endif
244 #include "../test-skeleton.c"