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 * @test 26 * @bug 8031320 27 * @summary Verify that RTMAbortThreshold option affects 28 * amount of aborts after which abort ratio is calculated. 29 * @library /test/lib / 30 * @modules java.base/jdk.internal.misc 31 * java.management 32 * @requires vm.rtm.cpu & vm.rtm.compiler 33 * @build sun.hotspot.WhiteBox 34 * @run driver ClassFileInstaller sun.hotspot.WhiteBox 35 * sun.hotspot.WhiteBox$WhiteBoxPermission 36 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 37 * -XX:+WhiteBoxAPI 38 * compiler.rtm.locking.TestRTMAbortThreshold 39 */ 40 41 package compiler.rtm.locking; 42 43 import compiler.testlibrary.rtm.AbortProvoker; 44 import compiler.testlibrary.rtm.AbortType; 45 import compiler.testlibrary.rtm.RTMLockingStatistics; 46 import compiler.testlibrary.rtm.RTMTestBase; 47 import jdk.test.lib.Asserts; 48 import jdk.test.lib.process.OutputAnalyzer; 49 import jdk.test.lib.cli.CommandLineOptionTest; 50 51 import java.util.List; 52 53 /** 54 * Test verifies that on RTMAbortThreshold option actually affects how soon 55 * method will be deoptimized on high abort ratio. 56 */ 57 public class TestRTMAbortThreshold { 58 59 protected void runTestCases() throws Throwable { 60 verifyAbortThreshold(false, 1); 61 verifyAbortThreshold(false, 10); 62 verifyAbortThreshold(false, 1000); 63 64 verifyAbortThreshold(true, 1); 65 verifyAbortThreshold(true, 10); 66 verifyAbortThreshold(true, 1000); 67 } 68 69 private void verifyAbortThreshold(boolean useStackLock, 70 long abortThreshold) throws Throwable { 71 AbortProvoker provoker = AbortType.XABORT.provoker(); 72 73 OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest( 74 provoker, 75 "-XX:+UseRTMDeopt", 76 "-XX:RTMAbortRatio=0", 77 CommandLineOptionTest.prepareNumericFlag("RTMAbortThreshold", 78 abortThreshold), 79 CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks", 80 useStackLock), 81 "-XX:RTMTotalCountIncrRate=1", 82 "-XX:+PrintPreciseRTMLockingStatistics", 83 AbortProvoker.class.getName(), 84 AbortType.XABORT.toString(), 85 Boolean.toString(!useStackLock)); 86 87 outputAnalyzer.shouldHaveExitValue(0); 88 89 List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString( 90 provoker.getMethodWithLockName(), outputAnalyzer.getOutput()); 91 92 Asserts.assertEQ(statistics.size(), 1, "VM output should contain " 93 + "exactly one RTM locking statistics entry for method " 94 + provoker.getMethodWithLockName()); 95 96 Asserts.assertEQ(statistics.get(0).getTotalLocks(), abortThreshold, 97 String.format("Expected that method with rtm lock elision was" 98 + " deoptimized after %d lock attempts", 99 abortThreshold)); 100 } 101 102 public static void main(String args[]) throws Throwable { 103 new TestRTMAbortThreshold().runTestCases(); 104 } 105 } 106