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