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 /** 26 * @test 27 * @bug 8031320 28 * @summary Verify that RTMAbortThreshold option affects 29 * amount of aborts after which abort ratio is calculated. 30 * @library /test/lib / 31 * @modules java.base/jdk.internal.misc 32 * java.management 33 * @build sun.hotspot.WhiteBox 34 * @run driver ClassFileInstaller sun.hotspot.WhiteBox 35 * sun.hotspot.WhiteBox$WhiteBoxPermission 36 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 37 * -XX:+WhiteBoxAPI 38 * compiler.rtm.locking.TestRTMAbortThreshold 39 */ 40 41 package compiler.rtm.locking; 42 43 import compiler.testlibrary.rtm.AbortProvoker; 44 import compiler.testlibrary.rtm.AbortType; 45 import compiler.testlibrary.rtm.RTMLockingStatistics; 46 import compiler.testlibrary.rtm.RTMTestBase; 47 import compiler.testlibrary.rtm.predicate.SupportedCPU; 48 import compiler.testlibrary.rtm.predicate.SupportedOS; 49 import compiler.testlibrary.rtm.predicate.SupportedVM; 50 import jdk.test.lib.Asserts; 51 import jdk.test.lib.process.OutputAnalyzer; 52 import jdk.test.lib.cli.CommandLineOptionTest; 53 import jdk.test.lib.cli.predicate.AndPredicate; 54 55 import java.util.List; 56 57 /** 58 * Test verifies that on RTMAbortThreshold option actually affects how soon 59 * method will be deoptimized on high abort ratio. 60 */ 61 public class TestRTMAbortThreshold extends CommandLineOptionTest { 62 private TestRTMAbortThreshold() { 63 super(new AndPredicate(new SupportedCPU(), new SupportedOS(), new SupportedVM())); 64 } 65 66 @Override 67 protected void runTestCases() throws Throwable { 68 verifyAbortThreshold(false, 1); 69 verifyAbortThreshold(false, 10); 70 verifyAbortThreshold(false, 1000); 71 72 verifyAbortThreshold(true, 1); 73 verifyAbortThreshold(true, 10); 74 verifyAbortThreshold(true, 1000); 75 } 76 77 private void verifyAbortThreshold(boolean useStackLock, 78 long abortThreshold) throws Throwable { 79 AbortProvoker provoker = AbortType.XABORT.provoker(); 80 81 OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest( 82 provoker, 83 "-XX:+UseRTMDeopt", 84 "-XX:RTMAbortRatio=0", 85 CommandLineOptionTest.prepareNumericFlag("RTMAbortThreshold", 86 abortThreshold), 87 CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks", 88 useStackLock), 89 "-XX:RTMTotalCountIncrRate=1", 90 "-XX:+PrintPreciseRTMLockingStatistics", 91 AbortProvoker.class.getName(), 92 AbortType.XABORT.toString(), 93 Boolean.toString(!useStackLock)); 94 95 outputAnalyzer.shouldHaveExitValue(0); 96 97 List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString( 98 provoker.getMethodWithLockName(), outputAnalyzer.getOutput()); 99 100 Asserts.assertEQ(statistics.size(), 1, "VM output should contain " 101 + "exactly one RTM locking statistics entry for method " 102 + provoker.getMethodWithLockName()); 103 104 Asserts.assertEQ(statistics.get(0).getTotalLocks(), abortThreshold, 105 String.format("Expected that method with rtm lock elision was" 106 + " deoptimized after %d lock attempts", 107 abortThreshold)); 108 } 109 110 public static void main(String args[]) throws Throwable { 111 new TestRTMAbortThreshold().test(); 112 } 113 } 114