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