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-rw-r--r--REORG.TODO/rt/tst-mqueue3.c243
1 files changed, 243 insertions, 0 deletions
diff --git a/REORG.TODO/rt/tst-mqueue3.c b/REORG.TODO/rt/tst-mqueue3.c
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+++ b/REORG.TODO/rt/tst-mqueue3.c
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+/* Test SIGEV_THREAD handling for POSIX message queues.
+   Copyright (C) 2004-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2004.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <mqueue.h>
+#include <signal.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mman.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+#if _POSIX_THREADS
+# include <pthread.h>
+
+static pid_t pid;
+static mqd_t m;
+static const char message[] = "hello";
+
+# define MAXMSG 10
+# define MSGSIZE 10
+# define UNIQUE 42
+
+
+static void
+fct (union sigval s)
+{
+  /* Put the mq in non-blocking mode.  */
+  struct mq_attr attr;
+  if (mq_getattr (m, &attr) != 0)
+    {
+      printf ("%s: mq_getattr failed: %m\n", __FUNCTION__);
+      exit (1);
+    }
+  attr.mq_flags |= O_NONBLOCK;
+  if (mq_setattr (m, &attr, NULL) != 0)
+    {
+      printf ("%s: mq_setattr failed: %m\n", __FUNCTION__);
+      exit (1);
+    }
+
+  /* Check the values.  */
+  if (attr.mq_maxmsg != MAXMSG)
+    {
+      printf ("%s: mq_maxmsg wrong: is %jd, expecte %d\n",
+	      __FUNCTION__, (intmax_t) attr.mq_maxmsg, MAXMSG);
+      exit (1);
+    }
+  if (attr.mq_msgsize != MAXMSG)
+    {
+      printf ("%s: mq_msgsize wrong: is %jd, expecte %d\n",
+	      __FUNCTION__, (intmax_t) attr.mq_msgsize, MSGSIZE);
+      exit (1);
+    }
+
+  /* Read the message.  */
+  char buf[attr.mq_msgsize];
+  ssize_t n = TEMP_FAILURE_RETRY (mq_receive (m, buf, attr.mq_msgsize, NULL));
+  if (n != sizeof (message))
+    {
+      printf ("%s: length of message wrong: is %zd, expected %zu\n",
+	      __FUNCTION__, n, sizeof (message));
+      exit (1);
+    }
+  if (memcmp (buf, message, sizeof (message)) != 0)
+    {
+      printf ("%s: message wrong: is \"%s\", expected \"%s\"\n",
+	      __FUNCTION__, buf, message);
+      exit (1);
+    }
+
+  exit (UNIQUE);
+}
+
+
+int
+do_test (void)
+{
+  char tmpfname[] = "/tmp/tst-mqueue3-barrier.XXXXXX";
+  int fd = mkstemp (tmpfname);
+  if (fd == -1)
+    {
+      printf ("cannot open temporary file: %m\n");
+      return 1;
+    }
+
+  /* Make sure it is always removed.  */
+  unlink (tmpfname);
+
+  /* Create one page of data.  */
+  size_t ps = sysconf (_SC_PAGESIZE);
+  char data[ps];
+  memset (data, '\0', ps);
+
+  /* Write the data to the file.  */
+  if (write (fd, data, ps) != (ssize_t) ps)
+    {
+      puts ("short write");
+      return 1;
+    }
+
+  void *mem = mmap (NULL, ps, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
+  if (mem == MAP_FAILED)
+    {
+      printf ("mmap failed: %m\n");
+      return 1;
+    }
+
+  pthread_barrier_t *b;
+  b = (pthread_barrier_t *) (((uintptr_t) mem + __alignof (pthread_barrier_t))
+                             & ~(__alignof (pthread_barrier_t) - 1));
+
+  pthread_barrierattr_t a;
+  if (pthread_barrierattr_init (&a) != 0)
+    {
+      puts ("barrierattr_init failed");
+      return 1;
+    }
+
+  if (pthread_barrierattr_setpshared (&a, PTHREAD_PROCESS_SHARED) != 0)
+    {
+      puts ("barrierattr_setpshared failed, could not test");
+      return 0;
+    }
+
+  if (pthread_barrier_init (b, &a, 2) != 0)
+    {
+      puts ("barrier_init failed");
+      return 1;
+    }
+
+  if (pthread_barrierattr_destroy (&a) != 0)
+    {
+      puts ("barrierattr_destroy failed");
+      return 1;
+    }
+
+  /* Name for the message queue.  */
+  char mqname[sizeof ("/tst-mqueue3-") + 3 * sizeof (pid_t)];
+  snprintf (mqname, sizeof (mqname) - 1, "/tst-mqueue3-%ld",
+	    (long int) getpid ());
+
+  /* Create the message queue.  */
+  struct mq_attr attr = { .mq_maxmsg = MAXMSG, .mq_msgsize = MSGSIZE };
+  m = mq_open (mqname, O_CREAT | O_EXCL | O_RDWR, 0600, &attr);
+  if (m == -1)
+    {
+      if (errno == ENOSYS)
+	{
+	  puts ("not implemented");
+	  return 0;
+	}
+
+      puts ("mq_open failed");
+      return 1;
+    }
+
+  /* Unlink the message queue right away.  */
+  if (mq_unlink (mqname) != 0)
+    {
+      puts ("mq_unlink failed");
+      return 1;
+    }
+
+  pid = fork ();
+  if (pid == -1)
+    {
+      puts ("fork failed");
+      return 1;
+    }
+  if (pid == 0)
+    {
+      /* Request notification via thread.  */
+      struct sigevent ev;
+      ev.sigev_notify = SIGEV_THREAD;
+      ev.sigev_notify_function = fct;
+      ev.sigev_value.sival_ptr = NULL;
+      ev.sigev_notify_attributes = NULL;
+
+      /* Tell the kernel.  */
+      if (mq_notify (m,&ev) != 0)
+	{
+	  puts ("mq_notify failed");
+	  exit (1);
+	}
+
+      /* Tell the parent we are ready.  */
+      (void) pthread_barrier_wait (b);
+
+      /* Make sure the process goes away eventually.  */
+      alarm (10);
+
+      /* Do nothing forever.  */
+      while (1)
+	pause ();
+    }
+
+  /* Wait for the child process to register to notification method.  */
+  (void) pthread_barrier_wait (b);
+
+  /* Send the message.  */
+  if (mq_send (m, message, sizeof (message), 1) != 0)
+    {
+      kill (pid, SIGKILL);
+      puts ("mq_send failed");
+      return 1;
+    }
+
+  int r;
+  if (TEMP_FAILURE_RETRY (waitpid (pid, &r, 0)) != pid)
+    {
+      kill (pid, SIGKILL);
+      puts ("waitpid failed");
+      return 1;
+    }
+
+  return WIFEXITED (r) && WEXITSTATUS (r) == UNIQUE ? 0 : 1;
+}
+# define TEST_FUNCTION do_test ()
+#else
+# define TEST_FUNCTION 0
+#endif
+
+#include "../test-skeleton.c"