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 RTMAbortThreshold option affects 29 * amount of aborts after which abort ratio is calculated. 30 * @library /testlibrary /testlibrary/whitebox /compiler/testlibrary 31 * @build TestRTMAbortThreshold 32 * @run main ClassFileInstaller sun.hotspot.WhiteBox 33 * sun.hotspot.WhiteBox$WhiteBoxPermission 34 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 35 * -XX:+WhiteBoxAPI TestRTMAbortThreshold 36 */ 37 38 import java.util.List; 39 import com.oracle.java.testlibrary.*; 40 import com.oracle.java.testlibrary.cli.CommandLineOptionTest; 41 import com.oracle.java.testlibrary.cli.predicate.AndPredicate; 42 import rtm.*; 43 import rtm.predicate.SupportedCPU; 44 import rtm.predicate.SupportedVM; 45 46 /** 47 * Test verifies that on RTMAbortThreshold option actually affects how soon 48 * method will be deoptimized on high abort ratio. 49 */ 50 public class TestRTMAbortThreshold extends CommandLineOptionTest { 51 private TestRTMAbortThreshold() { 52 super(new AndPredicate(new SupportedCPU(), new SupportedVM())); 53 } 54 55 @Override 56 protected void runTestCases() throws Throwable { 57 verifyAbortThreshold(false, 1); 58 verifyAbortThreshold(false, 10); 59 verifyAbortThreshold(false, 1000); 60 61 verifyAbortThreshold(true, 1); 62 verifyAbortThreshold(true, 10); 63 verifyAbortThreshold(true, 1000); 64 } 65 66 private void verifyAbortThreshold(boolean useStackLock, 67 long abortThreshold) throws Throwable { 68 AbortProvoker provoker = AbortType.XABORT.provoker(); 69 70 OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest( 71 provoker, 72 "-XX:+UseRTMDeopt", 73 "-XX:RTMAbortRatio=0", 74 CommandLineOptionTest.prepareNumericFlag("RTMAbortThreshold", 75 abortThreshold), 76 CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks", 77 useStackLock), 78 "-XX:RTMTotalCountIncrRate=1", 79 "-XX:+PrintPreciseRTMLockingStatistics", 80 AbortProvoker.class.getName(), 81 AbortType.XABORT.toString(), 82 Boolean.toString(!useStackLock)); 83 84 outputAnalyzer.shouldHaveExitValue(0); 85 86 List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString( 87 provoker.getMethodWithLockName(), outputAnalyzer.getOutput()); 88 89 Asserts.assertEQ(statistics.size(), 1, "VM output should contain " 90 + "exactly one RTM locking statistics entry for method " 91 + provoker.getMethodWithLockName()); 92 93 Asserts.assertEQ(statistics.get(0).getTotalLocks(), abortThreshold, 94 String.format("Expected that method with rtm lock elision was" 95 + " deoptimized after %d lock attempts", 96 abortThreshold)); 97 } 98 99 public static void main(String args[]) throws Throwable { 100 new TestRTMAbortThreshold().test(); 101 } 102 } 103