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+/*
+ * spin3.c
+ *
+ *
+ * --------------------------------------------------------------------------
+ *
+ * Pthreads-win32 - POSIX Threads Library for Win32
+ * Copyright(C) 1998 John E. Bossom
+ * Copyright(C) 1999,2005 Pthreads-win32 contributors
+ *
+ * Contact Email: rpj@callisto.canberra.edu.au
+ *
+ * The current list of contributors is contained
+ * in the file CONTRIBUTORS included with the source
+ * code distribution. The list can also be seen at the
+ * following World Wide Web location:
+ * http://sources.redhat.com/pthreads-win32/contributors.html
+ *
+ * This 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 of the License, or (at your option) any later version.
+ *
+ * This 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 this library in the file COPYING.LIB;
+ * if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *
+ * --------------------------------------------------------------------------
+ *
+ * Thread A locks spin - thread B tries to unlock.
+ * This should succeed, but it's undefined behaviour.
+ *
+ */
+
+#include "test.h"
+
+static int wasHere = 0;
+
+static pthread_spinlock_t spin;
+
+void * unlocker(void * arg)
+{
+ int expectedResult = (int) arg;
+
+ wasHere++;
+ assert(pthread_spin_unlock(&spin) == expectedResult);
+ wasHere++;
+ return NULL;
+}
+
+int
+main()
+{
+ pthread_t t;
+
+ wasHere = 0;
+ assert(pthread_spin_init(&spin, PTHREAD_PROCESS_PRIVATE) == 0);
+ assert(pthread_spin_lock(&spin) == 0);
+ assert(pthread_create(&t, NULL, unlocker, (void *) 0) == 0);
+ assert(pthread_join(t, NULL) == 0);
+ assert(pthread_spin_unlock(&spin) == EPERM);
+ assert(pthread_spin_destroy(&spin) == 0);
+ assert(wasHere == 2);
+
+ return 0;
+}