1 files changed, 68 insertions, 0 deletions
diff --git a/htl/tests/test-1.c b/htl/tests/test-1.c
new file mode 100644
index 0000000000..25263ee2f2
--- /dev/null
+++ b/htl/tests/test-1.c
@@ -0,0 +1,68 @@
+/* Test mutexes.
+   Copyright (C) 2000-2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If
+   not, see <http://www.gnu.org/licenses/>.  */
+
+#define _GNU_SOURCE
+
+#include <pthread.h>
+#include <assert.h>
+#include <unistd.h>
+#include <error.h>
+#include <errno.h>
+#include <stdio.h>
+
+#define THREADS 500
+
+void *
+foo (void *arg)
+{
+  pthread_mutex_t *mutex = arg;
+  pthread_mutex_lock (mutex);
+  pthread_mutex_unlock (mutex);
+  return mutex;
+}
+
+int
+main (int argc, char **argv)
+{
+  int i;
+  error_t err;
+  pthread_t tid[THREADS];
+  pthread_mutex_t mutex[THREADS];
+
+  for (i = 0; i < THREADS; i++)
+    {
+      pthread_mutex_init (&mutex[i], 0);
+      pthread_mutex_lock (&mutex[i]);
+      err = pthread_create (&tid[i], 0, foo, &mutex[i]);
+      if (err)
+	error (1, err, "pthread_create");
+      sched_yield ();
+    }
+
+  for (i = THREADS - 1; i >= 0; i--)
+    {
+      void *ret;
+      pthread_mutex_unlock (&mutex[i]);
+      err = pthread_join (tid[i], &ret);
+      if (err)
+	error (1, err, "pthread_join");
+      assert (ret == &mutex[i]);
+    }
+
+  return 0;
+}