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 NoRTMLockEliding option could be applied to 29 * specified method and that such method will not use rtm. 30 * @library /testlibrary /testlibrary/whitebox /compiler/testlibrary 31 * @build TestNoRTMLockElidingOption 32 * @run main ClassFileInstaller sun.hotspot.WhiteBox 33 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 34 * -XX:+WhiteBoxAPI TestNoRTMLockElidingOption 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 method tagged with option <i>NoRTMLockElidingOption</i> 47 * will not use RTM-based lock elision. 48 * Test invokes compiled method and checks that no deoptimization with 49 * <i>rtm_state_change</i> reason had happened and that that VM output 50 * does not contain RTM locking statistics for compiled method. 51 */ 52 public class TestNoRTMLockElidingOption extends CommandLineOptionTest { 53 private TestNoRTMLockElidingOption() { 54 super(new AndPredicate(new SupportedCPU(), new SupportedVM())); 55 } 56 57 @Override 58 public void runTestCases() throws Throwable { 59 verifyOption(false); 60 verifyOption(true); 61 } 62 63 public void verifyOption(boolean useStackLock) throws Throwable { 64 AbortProvoker provoker = AbortType.XABORT.provoker(); 65 String logFileName = String.format("rtm_deopt_%s_stack_lock.xml", 66 (useStackLock ? "use" : "no")); 67 String methodOption = String.format("-XX:CompileCommand=option," + 68 "%s,NoRTMLockEliding", provoker.getMethodWithLockName()); 69 70 OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest( 71 logFileName, 72 provoker, 73 CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks", 74 useStackLock), 75 methodOption, 76 "-XX:RTMTotalCountIncrRate=1", 77 "-XX:+UseRTMDeopt", 78 "-XX:+PrintPreciseRTMLockingStatistics", 79 AbortProvoker.class.getName(), 80 AbortType.XABORT.toString(), 81 Boolean.toString(!useStackLock) 82 ); 83 84 outputAnalyzer.shouldHaveExitValue(0); 85 86 int firedTraps = RTMTestBase.firedRTMStateChangeTraps(logFileName); 87 88 Asserts.assertEQ(firedTraps, 0, 89 "No deoptimizations with rtm_state_change reason are expected"); 90 91 List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString( 92 provoker.getMethodWithLockName(), outputAnalyzer.getOutput()); 93 94 Asserts.assertEQ(statistics.size(), 0, 95 "VM output should not contain RTM locking statistics entries " 96 + "for method " + provoker.getMethodWithLockName()); 97 } 98 99 public static void main(String args[]) throws Throwable { 100 new TestNoRTMLockElidingOption().test(); 101 } 102 }