1/* 2 * Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24/** 25 * @test 26 * @bug 8031320 27 * @summary Verify that rtm locking is used for inflated locks. 28 * @library /test/lib / 29 * @modules java.base/jdk.internal.misc 30 * java.management 31 * @requires vm.flavor == "server" & !vm.emulatedClient & vm.rtm.cpu & vm.rtm.os 32 * @build sun.hotspot.WhiteBox 33 * @run driver ClassFileInstaller sun.hotspot.WhiteBox 34 * sun.hotspot.WhiteBox$WhiteBoxPermission 35 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 36 * -XX:+WhiteBoxAPI compiler.rtm.locking.TestUseRTMForInflatedLocks 37 */ 38 39package compiler.rtm.locking; 40 41import compiler.testlibrary.rtm.AbortProvoker; 42import compiler.testlibrary.rtm.AbortType; 43import compiler.testlibrary.rtm.RTMLockingStatistics; 44import compiler.testlibrary.rtm.RTMTestBase; 45import jdk.test.lib.Asserts; 46import jdk.test.lib.process.OutputAnalyzer; 47 48import java.util.List; 49 50/** 51 * Test verifies that RTM-based lock elision could be used for inflated locks 52 * by calling compiled method that use RTM-based lock elision and using 53 * manually inflated lock. 54 * Compiled method invoked {@code AbortProvoker.DEFAULT_ITERATIONS} times, 55 * so total locks count should be the same. 56 * This test could also be affected by retriable aborts, so -XX:RTMRetryCount=0 57 * is used. For more information abort that issue see 58 * {@link TestUseRTMAfterLockInflation}. 59 */ 60public class TestUseRTMForInflatedLocks { 61 62 protected void runTestCases() throws Throwable { 63 AbortProvoker provoker = AbortType.XABORT.provoker(); 64 RTMLockingStatistics lock; 65 66 OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest( 67 provoker, 68 "-XX:-UseRTMForStackLocks", 69 "-XX:RTMTotalCountIncrRate=1", 70 "-XX:RTMRetryCount=0", 71 "-XX:+PrintPreciseRTMLockingStatistics", 72 AbortProvoker.class.getName(), 73 AbortType.XABORT.toString()); 74 75 outputAnalyzer.shouldHaveExitValue(0); 76 77 List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString( 78 provoker.getMethodWithLockName(), outputAnalyzer.getOutput()); 79 80 Asserts.assertEQ(statistics.size(), 1, 81 "VM output should contain exactly one rtm locking statistics " 82 + "entry for method " + provoker.getMethodWithLockName()); 83 84 lock = statistics.get(0); 85 Asserts.assertEQ(lock.getTotalLocks(), AbortProvoker.DEFAULT_ITERATIONS, 86 "Total lock count should be greater or equal to " 87 + AbortProvoker.DEFAULT_ITERATIONS); 88 } 89 90 public static void main(String args[]) throws Throwable { 91 new TestUseRTMForInflatedLocks().runTestCases(); 92 } 93} 94