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 * @requires vm.flavor == "server" & !vm.emulatedClient & vm.rtm.cpu & vm.rtm.os 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.TestUseRTMXendForLockBusy 39 */ 40 41 package compiler.rtm.locking; 42 43 import compiler.testlibrary.rtm.AbortType; 44 import compiler.testlibrary.rtm.BusyLock; 45 import compiler.testlibrary.rtm.CompilableTest; 46 import compiler.testlibrary.rtm.RTMLockingStatistics; 47 import compiler.testlibrary.rtm.RTMTestBase; 48 import jdk.test.lib.Asserts; 49 import jdk.test.lib.process.OutputAnalyzer; 50 import jdk.test.lib.cli.CommandLineOptionTest; 51 52 import java.util.List; 53 54 /** 55 * Test verifies that with +UseRTMXendForLockBusy there will be no aborts 56 * forced by the test. 57 */ 58 public class TestUseRTMXendForLockBusy { 59 private final static int LOCKING_TIME = 5000; 60 61 protected void runTestCases() throws Throwable { 62 // inflated lock, xabort on lock busy 63 verifyXendForLockBusy(true, false); 64 // inflated lock, xend on lock busy 65 verifyXendForLockBusy(true, true); 66 // stack lock, xabort on lock busy 67 verifyXendForLockBusy(false, false); 68 // stack lock, xend on lock busy 69 verifyXendForLockBusy(false, true); 70 } 71 72 private void verifyXendForLockBusy(boolean inflateMonitor, 73 boolean useXend) throws Throwable { 74 CompilableTest test = new BusyLock(); 75 76 OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest( 77 test, 78 CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks", 79 inflateMonitor), 80 CommandLineOptionTest.prepareBooleanFlag( 81 "UseRTMXendForLockBusy", 82 useXend), 83 "-XX:RTMRetryCount=0", 84 "-XX:RTMTotalCountIncrRate=1", 85 "-XX:+PrintPreciseRTMLockingStatistics", 86 BusyLock.class.getName(), 87 Boolean.toString(inflateMonitor), 88 Integer.toString(TestUseRTMXendForLockBusy.LOCKING_TIME) 89 ); 90 91 outputAnalyzer.shouldHaveExitValue(0); 92 93 List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString( 94 test.getMethodWithLockName(), outputAnalyzer.getOutput()); 95 96 Asserts.assertEQ(statistics.size(), 1, "VM output should contain " 97 + "exactly one rtm locking statistics entry for method " 98 + test.getMethodWithLockName()); 99 100 long aborts = statistics.get(0).getAborts(AbortType.XABORT); 101 102 if (useXend) { 103 Asserts.assertEQ(aborts, 0L, 104 "Expected to get no aborts on busy lock"); 105 } else { 106 Asserts.assertGT(aborts, 0L, 107 "Expected to get at least one abort on busy lock"); 108 } 109 } 110 111 public static void main(String args[]) throws Throwable { 112 new TestUseRTMXendForLockBusy().runTestCases(); 113 } 114 }