| /* |
| * Copyright (c) 2014, 2016, Oracle and/or its affiliates. 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 |
| * @bug 8031320 |
| * @summary Verify that RTMRetryCount affects actual amount of retries. |
| * @library /test/lib / |
| * @modules java.base/jdk.internal.misc |
| * java.management |
| * @requires vm.flavor == "server" & !vm.emulatedClient & vm.rtm.cpu & vm.rtm.os |
| * @build sun.hotspot.WhiteBox |
| * @run driver ClassFileInstaller sun.hotspot.WhiteBox |
| * sun.hotspot.WhiteBox$WhiteBoxPermission |
| * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions |
| * -XX:+WhiteBoxAPI |
| * compiler.rtm.locking.TestRTMRetryCount |
| */ |
| |
| package compiler.rtm.locking; |
| |
| import compiler.testlibrary.rtm.BusyLock; |
| import compiler.testlibrary.rtm.CompilableTest; |
| import compiler.testlibrary.rtm.RTMLockingStatistics; |
| import compiler.testlibrary.rtm.RTMTestBase; |
| import jdk.test.lib.Asserts; |
| import jdk.test.lib.process.OutputAnalyzer; |
| import jdk.test.lib.cli.CommandLineOptionTest; |
| |
| import java.util.List; |
| |
| /** |
| * Test verifies that RTMRetryCount option actually affects amount of |
| * retries on lock busy. |
| */ |
| public class TestRTMRetryCount { |
| /** |
| * Time in ms, during which busy lock will be locked. |
| */ |
| private static final int LOCKING_TIME = 5000; |
| private static final boolean INFLATE_MONITOR = true; |
| |
| protected void runTestCases() throws Throwable { |
| verifyRTMRetryCount(0); |
| verifyRTMRetryCount(1); |
| verifyRTMRetryCount(5); |
| verifyRTMRetryCount(10); |
| } |
| |
| private void verifyRTMRetryCount(int retryCount) throws Throwable { |
| CompilableTest busyLock = new BusyLock(); |
| long expectedAborts = retryCount + 1L; |
| |
| OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest( |
| busyLock, |
| "-XX:-UseRTMXendForLockBusy", |
| "-XX:RTMTotalCountIncrRate=1", |
| CommandLineOptionTest.prepareNumericFlag("RTMRetryCount", |
| retryCount), |
| "-XX:RTMTotalCountIncrRate=1", |
| "-XX:+PrintPreciseRTMLockingStatistics", |
| BusyLock.class.getName(), |
| Boolean.toString(TestRTMRetryCount.INFLATE_MONITOR), |
| Integer.toString(TestRTMRetryCount.LOCKING_TIME) |
| ); |
| |
| outputAnalyzer.shouldHaveExitValue(0); |
| |
| List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString( |
| busyLock.getMethodWithLockName(), outputAnalyzer.getStdout()); |
| |
| Asserts.assertEQ(statistics.size(), 1, "VM output should contain " |
| + "exactly one rtm locking statistics entry for method " |
| + busyLock.getMethodWithLockName()); |
| |
| Asserts.assertEQ(statistics.get(0).getTotalAborts(), expectedAborts, |
| String.format("It is expected to get %d aborts", |
| expectedAborts)); |
| } |
| |
| public static void main(String args[]) throws Throwable { |
| new TestRTMRetryCount().runTestCases(); |
| } |
| } |