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 stack locks. 29 * @library /testlibrary /testlibrary/whitebox /compiler/testlibrary 30 * @build TestUseRTMForStackLocks 31 * @run main ClassFileInstaller sun.hotspot.WhiteBox 32 * sun.hotspot.WhiteBox$WhiteBoxPermission 33 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 34 * -XX:+WhiteBoxAPI TestUseRTMForStackLocks 35 */ 36 37 import java.util.List; 38 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 RTM-based lock elision could be used for stack locks 48 * by calling compiled method that use RTM-based lock elision and using 49 * stack lock. 50 * Compiled method invoked {@code AbortProvoker.DEFAULT_ITERATIONS} times, 51 * so total locks count should be the same. 52 * This test could also be affected by retriable aborts, so -XX:RTMRetryCount=0 53 * is used. For more information abort that issue see 54 * {@link TestUseRTMAfterLockInflation}. 55 */ 56 public class TestUseRTMForStackLocks extends CommandLineOptionTest { 57 private static final boolean INFLATE_MONITOR = false; 58 59 private TestUseRTMForStackLocks() { 60 super(new AndPredicate(new SupportedCPU(), new SupportedVM())); 61 } 62 63 @Override 64 protected void runTestCases() throws Throwable { 65 AbortProvoker provoker = AbortType.XABORT.provoker(); 66 RTMLockingStatistics lock; 67 68 OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest( 69 provoker, 70 "-XX:+UseRTMForStackLocks", 71 "-XX:RTMTotalCountIncrRate=1", 72 "-XX:RTMRetryCount=0", 73 "-XX:+PrintPreciseRTMLockingStatistics", 74 AbortProvoker.class.getName(), 75 AbortType.XABORT.toString(), 76 Boolean.toString(TestUseRTMForStackLocks.INFLATE_MONITOR)); 77 78 outputAnalyzer.shouldHaveExitValue(0); 79 80 List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString( 81 provoker.getMethodWithLockName(), outputAnalyzer.getOutput()); 82 83 Asserts.assertEQ(statistics.size(), 1, 84 "VM output should contain exactly one rtm locking statistics " 85 + "entry for method " + provoker.getMethodWithLockName()); 86 87 lock = statistics.get(0); 88 Asserts.assertEQ(lock.getTotalLocks(), AbortProvoker.DEFAULT_ITERATIONS, 89 "Total locks count should be greater or equal to " 90 + AbortProvoker.DEFAULT_ITERATIONS); 91 } 92 93 public static void main(String args[]) throws Throwable { 94 new TestUseRTMForStackLocks().test(); 95 } 96 }