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 rtm locking is used for inflated locks. 29 * @library /testlibrary /testlibrary/whitebox /compiler/testlibrary 30 * @build TestUseRTMForInflatedLocks 31 * @run main ClassFileInstaller sun.hotspot.WhiteBox 32 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 33 * -XX:+WhiteBoxAPI TestUseRTMForInflatedLocks 34 */ 35 36 import java.util.List; 37 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 RTM-based lock elision could be used for inflated locks 47 * by calling compiled method that use RTM-based lock elision and using 48 * manually inflated lock. 49 * Compiled method invoked {@code AbortProvoker.DEFAULT_ITERATIONS} times, 50 * so total locks count should be the same. 51 * This test could also be affected by retriable aborts, so -XX:RTMRetryCount=0 52 * is used. For more information abort that issue see 53 * {@link TestUseRTMAfterLockInflation}. 54 */ 55 public class TestUseRTMForInflatedLocks extends CommandLineOptionTest { 56 private TestUseRTMForInflatedLocks() { 57 super(new AndPredicate(new SupportedCPU(), new SupportedVM())); 58 } 59 60 @Override 61 protected void runTestCases() throws Throwable { 62 AbortProvoker provoker = AbortType.XABORT.provoker(); 63 RTMLockingStatistics lock; 64 65 OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest( 66 provoker, 67 "-XX:-UseRTMForStackLocks", 68 "-XX:RTMTotalCountIncrRate=1", 69 "-XX:RTMRetryCount=0", 70 "-XX:+PrintPreciseRTMLockingStatistics", 71 AbortProvoker.class.getName(), 72 AbortType.XABORT.toString()); 73 74 outputAnalyzer.shouldHaveExitValue(0); 75 76 List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString( 77 provoker.getMethodWithLockName(), outputAnalyzer.getOutput()); 78 79 Asserts.assertEQ(statistics.size(), 1, 80 "VM output should contain exactly one rtm locking statistics " 81 + "entry for method " + provoker.getMethodWithLockName()); 82 83 lock = statistics.get(0); 84 Asserts.assertEQ(lock.getTotalLocks(), AbortProvoker.DEFAULT_ITERATIONS, 85 "Total lock count should be greater or equal to " 86 + AbortProvoker.DEFAULT_ITERATIONS); 87 } 88 89 public static void main(String args[]) throws Throwable { 90 new TestUseRTMForInflatedLocks().test(); 91 } 92 }