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-rw-r--r--nptl/tst-cond2.c118
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+/* Copyright (C) 2002 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+ 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <error.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+
+static pthread_mutex_t mut = PTHREAD_MUTEX_INITIALIZER;
+static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
+
+
+static void *
+tf (void *a)
+{
+ int i = (long int) a;
+ int err;
+
+ printf ("child %d: wait\n", i);
+
+ err = pthread_cond_wait (&cond, &mut);
+ if (err != 0)
+ error (EXIT_FAILURE, err, "child %d: failed to wait", i);
+
+ printf ("child %d: woken up\n", i);
+
+ err = pthread_mutex_unlock (&mut);
+ if (err != 0)
+ error (EXIT_FAILURE, err, "child %d: unlock failed", i);
+
+ printf ("child %d: done\n", i);
+
+ return NULL;
+}
+
+
+#define N 10
+
+
+static int
+do_test (void)
+{
+ pthread_t th[N];
+ int i;
+ int err;
+
+ printf ("&cond = %p\n&mut = %p\n", &cond, &mut);
+
+ puts ("first lock");
+
+ err = pthread_mutex_lock (&mut);
+ if (err != 0)
+ error (EXIT_FAILURE, err, "initial locking failed");
+
+ for (i = 0; i < N; ++i)
+ {
+ printf ("create thread %d\n", i);
+
+ err = pthread_create (&th[i], NULL, tf, (void *) (long int) i);
+ if (err != 0)
+ error (EXIT_FAILURE, err, "cannot create thread %d", i);
+
+ printf ("wait for child %d\n", i);
+
+ /* Lock and thereby wait for the child to start up and get the
+ conditional variable. */
+ pthread_mutex_lock (&mut);
+ }
+
+ puts ("final unlock");
+
+ /* Unlock in preparation of the broadcast. */
+ err = pthread_mutex_unlock (&mut);
+ if (err != 0)
+ error (EXIT_FAILURE, err, "parent: unlock failed");
+
+ puts ("broadcast");
+
+ /* Wake up all threads. */
+ err = pthread_cond_broadcast (&cond);
+ if (err != 0)
+ error (EXIT_FAILURE, err, "parent: broadcast failed");
+
+ /* Join all threads. */
+ for (i = 0; i < N; ++i)
+ {
+ printf ("join thread %d\n", i);
+
+ err = pthread_join (th[i], NULL);
+ if (err != 0)
+ error (EXIT_FAILURE, err, "join of child %d failed", i);
+ }
+
+ puts ("done");
+
+ return 0;
+}
+
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"