8157683: Thread.onSpinWait intrinsification doesn't have sufficient test coverage
Reviewed-by: kvn
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/compiler/onSpinWait/TestOnSpinWaitEnableDisable.java Wed May 25 10:46:21 2016 +0200
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright 2016 Azul Systems, Inc. All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code 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 General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * @test TestOnSpinWaitEnableDisable
+ * @summary Test to ensure basic functioning of java.lang.Thread.onSpinWait
+ * @bug 8157683
+ * @run main TestOnSpinWaitEnableDisable
+ * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:DisableIntrinsic=_onSpinWait TestOnSpinWaitEnableDisable
+ */
+
+public class TestOnSpinWaitEnableDisable {
+ public static void main(String[] args) {
+ for (int i = 0; i < 50_000; i++) {
+ java.lang.Thread.onSpinWait();
+ }
+ }
+}