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