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 RTMRetryCount affects actual amount of retries. 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.TestRTMRetryCount 38 */ 39 40 package compiler.rtm.locking; 41 42 import compiler.testlibrary.rtm.BusyLock; 43 import compiler.testlibrary.rtm.CompilableTest; 44 import compiler.testlibrary.rtm.RTMLockingStatistics; 45 import compiler.testlibrary.rtm.RTMTestBase; 46 import compiler.testlibrary.rtm.predicate.SupportedCPU; 47 import compiler.testlibrary.rtm.predicate.SupportedOS; 48 import compiler.testlibrary.rtm.predicate.SupportedVM; 49 import jdk.test.lib.Asserts; 50 import jdk.test.lib.process.OutputAnalyzer; 51 import jdk.test.lib.cli.CommandLineOptionTest; 52 import jdk.test.lib.cli.predicate.AndPredicate; 53 54 import java.util.List; 55 56 /** 57 * Test verifies that RTMRetryCount option actually affects amount of 58 * retries on lock busy. 59 */ 60 public class TestRTMRetryCount extends CommandLineOptionTest { 61 /** 62 * Time in ms, during which busy lock will be locked. 63 */ 64 private static final int LOCKING_TIME = 5000; 65 private static final boolean INFLATE_MONITOR = true; 66 67 private TestRTMRetryCount() { 68 super(new AndPredicate(new SupportedCPU(), new SupportedOS(), new SupportedVM())); 69 } 70 71 @Override 72 protected void runTestCases() throws Throwable { 73 verifyRTMRetryCount(0); 74 verifyRTMRetryCount(1); 75 verifyRTMRetryCount(5); 76 verifyRTMRetryCount(10); 77 } 78 79 private void verifyRTMRetryCount(int retryCount) throws Throwable { 80 CompilableTest busyLock = new BusyLock(); 81 long expectedAborts = retryCount + 1L; 82 83 OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest( 84 busyLock, 85 "-XX:-UseRTMXendForLockBusy", 86 "-XX:RTMTotalCountIncrRate=1", 87 CommandLineOptionTest.prepareNumericFlag("RTMRetryCount", 88 retryCount), 89 "-XX:RTMTotalCountIncrRate=1", 90 "-XX:+PrintPreciseRTMLockingStatistics", 91 BusyLock.class.getName(), 92 Boolean.toString(TestRTMRetryCount.INFLATE_MONITOR), 93 Integer.toString(TestRTMRetryCount.LOCKING_TIME) 94 ); 95 96 outputAnalyzer.shouldHaveExitValue(0); 97 98 List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString( 99 busyLock.getMethodWithLockName(), outputAnalyzer.getStdout()); 100 101 Asserts.assertEQ(statistics.size(), 1, "VM output should contain " 102 + "exactly one rtm locking statistics entry for method " 103 + busyLock.getMethodWithLockName()); 104 105 Asserts.assertEQ(statistics.get(0).getTotalAborts(), expectedAborts, 106 String.format("It is expected to get %d aborts", 107 expectedAborts)); 108 } 109 110 public static void main(String args[]) throws Throwable { 111 new TestRTMRetryCount().test(); 112 } 113 }