1 files changed, 108 insertions, 0 deletions
diff --git a/linuxthreads/Examples/ex10.c b/linuxthreads/Examples/ex10.c
new file mode 100644
index 0000000000..f3ad517283
--- /dev/null
+++ b/linuxthreads/Examples/ex10.c
@@ -0,0 +1,108 @@
+/* Tests for pthread_mutex_timedlock function.
+   Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc.
+   Contributed by Kaz Kylheku <kaz@ashi.footprints.net>, 2000.
+
+   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; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <errno.h>
+#include <error.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <pthread.h>
+#include <time.h>
+
+#define NUM_THREADS 10
+#define NUM_ITERS   50
+#define TIMEOUT_NS  100000000L
+
+static void *thread (void *)  __attribute__ ((__noreturn__));
+static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
+
+int
+main (void)
+{
+  pthread_t th;
+  int i;
+
+  for (i = 0; i < NUM_THREADS; i++)
+    {
+      if (pthread_create (&th, NULL, thread, NULL) != 0)
+	error (EXIT_FAILURE, 0, "cannot create thread");
+    }
+
+  (void) thread (NULL);
+  /* notreached */
+  return 0;
+}
+
+
+static void *
+thread (void *arg)
+{
+  int i;
+  pthread_t self = pthread_self ();
+  static int linecount; /* protected by flockfile(stdout) */
+
+  for (i = 0; i < NUM_ITERS; i++)
+    {
+      struct timespec ts;
+
+      for (;;)
+	{
+	  int err;
+
+	  clock_gettime (CLOCK_REALTIME, &ts);
+
+	  ts.tv_nsec += TIMEOUT_NS;
+
+	  if (ts.tv_nsec >= 1000000000L) {
+	     ts.tv_sec++;
+	     ts.tv_nsec -= 1000000000L;
+	  }
+
+	  switch ((err = pthread_mutex_timedlock (&mutex, &ts)))
+	    {
+	    case 0:
+	      flockfile (stdout);
+	      printf ("%04d: thread %lu got mutex\n", ++linecount,
+		      (unsigned long) self);
+	      funlockfile (stdout);
+	      break;
+	    case ETIMEDOUT:
+	      flockfile (stdout);
+	      printf ("%04d: thread %lu timed out on mutex\n", ++linecount,
+		      (unsigned long) self);
+	      funlockfile (stdout);
+	      continue;
+	    default:
+	      error (EXIT_FAILURE, err, "pthread_mutex_timedlock failure");
+	    }
+	  break;
+	}
+
+      ts.tv_sec = 0;
+      ts.tv_nsec = TIMEOUT_NS;
+      nanosleep (&ts, NULL);
+
+      flockfile (stdout);
+      printf ("%04d: thread %lu releasing mutex\n", ++linecount,
+	      (unsigned long) self);
+      funlockfile (stdout);
+      pthread_mutex_unlock (&mutex);
+    }
+
+  pthread_exit (NULL);
+}