| /* |
| * 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 rtm locking is used for inflated locks. |
| * @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.TestUseRTMForInflatedLocks |
| */ |
| |
| package compiler.rtm.locking; |
| |
| import compiler.testlibrary.rtm.AbortProvoker; |
| import compiler.testlibrary.rtm.AbortType; |
| import compiler.testlibrary.rtm.RTMLockingStatistics; |
| import compiler.testlibrary.rtm.RTMTestBase; |
| import jdk.test.lib.Asserts; |
| import jdk.test.lib.process.OutputAnalyzer; |
| |
| import java.util.List; |
| |
| /** |
| * Test verifies that RTM-based lock elision could be used for inflated locks |
| * by calling compiled method that use RTM-based lock elision and using |
| * manually inflated lock. |
| * Compiled method invoked {@code AbortProvoker.DEFAULT_ITERATIONS} times, |
| * so total locks count should be the same. |
| * This test could also be affected by retriable aborts, so -XX:RTMRetryCount=0 |
| * is used. For more information abort that issue see |
| * {@link TestUseRTMAfterLockInflation}. |
| */ |
| public class TestUseRTMForInflatedLocks { |
| |
| protected void runTestCases() throws Throwable { |
| AbortProvoker provoker = AbortType.XABORT.provoker(); |
| RTMLockingStatistics lock; |
| |
| OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest( |
| provoker, |
| "-XX:-UseRTMForStackLocks", |
| "-XX:RTMTotalCountIncrRate=1", |
| "-XX:RTMRetryCount=0", |
| "-XX:+PrintPreciseRTMLockingStatistics", |
| AbortProvoker.class.getName(), |
| AbortType.XABORT.toString()); |
| |
| outputAnalyzer.shouldHaveExitValue(0); |
| |
| List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString( |
| provoker.getMethodWithLockName(), outputAnalyzer.getOutput()); |
| |
| Asserts.assertEQ(statistics.size(), 1, |
| "VM output should contain exactly one rtm locking statistics " |
| + "entry for method " + provoker.getMethodWithLockName()); |
| |
| lock = statistics.get(0); |
| Asserts.assertEQ(lock.getTotalLocks(), AbortProvoker.DEFAULT_ITERATIONS, |
| "Total lock count should be greater or equal to " |
| + AbortProvoker.DEFAULT_ITERATIONS); |
| } |
| |
| public static void main(String args[]) throws Throwable { |
| new TestUseRTMForInflatedLocks().runTestCases(); |
| } |
| } |