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 UseRTMXendForLockBusy option affects 28 * method behaviour if lock is busy. 29 * @library /test/lib / 30 * @modules java.base/jdk.internal.misc 31 * java.management 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 37 * compiler.rtm.locking.TestUseRTMXendForLockBusy 38 */ 39 40 package compiler.rtm.locking; 41 42 import compiler.testlibrary.rtm.AbortType; 43 import compiler.testlibrary.rtm.BusyLock; 44 import compiler.testlibrary.rtm.CompilableTest; 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 with +UseRTMXendForLockBusy there will be no aborts 59 * forced by the test. 60 */ 61 public class TestUseRTMXendForLockBusy extends CommandLineOptionTest { 62 private final static int LOCKING_TIME = 5000; 63 64 private TestUseRTMXendForLockBusy() { 65 super(new AndPredicate(new SupportedCPU(), new SupportedOS(), new SupportedVM())); 66 } 67 68 @Override 69 protected void runTestCases() throws Throwable { 70 // inflated lock, xabort on lock busy 71 verifyXendForLockBusy(true, false); 72 // inflated lock, xend on lock busy 73 verifyXendForLockBusy(true, true); 74 // stack lock, xabort on lock busy 75 verifyXendForLockBusy(false, false); 76 // stack lock, xend on lock busy 77 verifyXendForLockBusy(false, true); 78 } 79 80 private void verifyXendForLockBusy(boolean inflateMonitor, 81 boolean useXend) throws Throwable { 82 CompilableTest test = new BusyLock(); 83 84 OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest( 85 test, 86 CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks", 87 inflateMonitor), 88 CommandLineOptionTest.prepareBooleanFlag( 89 "UseRTMXendForLockBusy", 90 useXend), 91 "-XX:RTMRetryCount=0", 92 "-XX:RTMTotalCountIncrRate=1", 93 "-XX:+PrintPreciseRTMLockingStatistics", 94 BusyLock.class.getName(), 95 Boolean.toString(inflateMonitor), 96 Integer.toString(TestUseRTMXendForLockBusy.LOCKING_TIME) 97 ); 98 99 outputAnalyzer.shouldHaveExitValue(0); 100 101 List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString( 102 test.getMethodWithLockName(), outputAnalyzer.getOutput()); 103 104 Asserts.assertEQ(statistics.size(), 1, "VM output should contain " 105 + "exactly one rtm locking statistics entry for method " 106 + test.getMethodWithLockName()); 107 108 long aborts = statistics.get(0).getAborts(AbortType.XABORT); 109 110 if (useXend) { 111 Asserts.assertEQ(aborts, 0L, 112 "Expected to get no aborts on busy lock"); 113 } else { 114 Asserts.assertGT(aborts, 0L, 115 "Expected to get at least one abort on busy lock"); 116 } 117 } 118 119 public static void main(String args[]) throws Throwable { 120 new TestUseRTMXendForLockBusy().test(); 121 } 122 }