1 /* 2 * Copyright (c) 2014, 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 /testlibrary /testlibrary/whitebox /compiler/testlibrary 30 * @build TestRTMRetryCount 31 * @run main ClassFileInstaller sun.hotspot.WhiteBox 32 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 33 * -XX:+WhiteBoxAPI TestRTMRetryCount 34 */ 35 36 import java.util.List; 37 38 import com.oracle.java.testlibrary.*; 39 import com.oracle.java.testlibrary.cli.CommandLineOptionTest; 40 import com.oracle.java.testlibrary.cli.predicate.AndPredicate; 41 import rtm.*; 42 import rtm.predicate.SupportedCPU; 43 import rtm.predicate.SupportedVM; 44 45 /** 46 * Test verifies that RTMRetryCount option actually affects amount of 47 * retries on lock busy. 48 */ 49 public class TestRTMRetryCount extends CommandLineOptionTest { 50 /** 51 * Time in ms, during which busy lock will be locked. 52 */ 53 private static final int LOCKING_TIME = 5000; 54 private static final boolean INFLATE_MONITOR = true; 55 56 private TestRTMRetryCount() { 57 super(new AndPredicate(new SupportedCPU(), new SupportedVM())); 58 } 59 60 @Override 61 protected void runTestCases() throws Throwable { 62 verifyRTMRetryCount(0); 63 verifyRTMRetryCount(1); 64 verifyRTMRetryCount(5); 65 verifyRTMRetryCount(10); 66 } 67 68 private void verifyRTMRetryCount(int retryCount) throws Throwable { 69 CompilableTest busyLock = new BusyLock(); 70 long expectedAborts = retryCount + 1L; 71 72 OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest( 73 busyLock, 74 "-XX:-UseRTMXendForLockBusy", 75 "-XX:RTMTotalCountIncrRate=1", 76 CommandLineOptionTest.prepareNumericFlag("RTMRetryCount", 77 retryCount), 78 "-XX:RTMTotalCountIncrRate=1", 79 "-XX:+PrintPreciseRTMLockingStatistics", 80 BusyLock.class.getName(), 81 Boolean.toString(TestRTMRetryCount.INFLATE_MONITOR), 82 Integer.toString(TestRTMRetryCount.LOCKING_TIME) 83 ); 84 85 outputAnalyzer.shouldHaveExitValue(0); 86 87 List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString( 88 busyLock.getMethodWithLockName(), outputAnalyzer.getStdout()); 89 90 Asserts.assertEQ(statistics.size(), 1, "VM output should contain " 91 + "exactly one rtm locking statistics entry for method " 92 + busyLock.getMethodWithLockName()); 93 94 Asserts.assertEQ(statistics.get(0).getTotalAborts(), expectedAborts, 95 String.format("It is expected to get %d aborts", 96 expectedAborts)); 97 } 98 99 public static void main(String args[]) throws Throwable { 100 new TestRTMRetryCount().test(); 101 } 102 }