1 /* 2 * Copyright (c) 2014, 2015, 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 /test/lib / 30 * @modules java.base/jdk.internal.misc 31 * java.management 32 * @build TestUseRTMForStackLocks 33 * @run driver ClassFileInstaller sun.hotspot.WhiteBox 34 * sun.hotspot.WhiteBox$WhiteBoxPermission 35 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions 36 * -XX:+WhiteBoxAPI TestUseRTMForStackLocks 37 */ 38 39 import java.util.List; 40 41 import jdk.test.lib.*; 42 import jdk.test.lib.cli.CommandLineOptionTest; 43 import jdk.test.lib.cli.predicate.AndPredicate; 44 import compiler.testlibrary.rtm.*; 45 import compiler.testlibrary.rtm.predicate.SupportedCPU; 46 import compiler.testlibrary.rtm.predicate.SupportedVM; 47 48 /** 49 * Test verifies that RTM-based lock elision could be used for stack locks 50 * by calling compiled method that use RTM-based lock elision and using 51 * stack lock. 52 * Compiled method invoked {@code AbortProvoker.DEFAULT_ITERATIONS} times, 53 * so total locks count should be the same. 54 * This test could also be affected by retriable aborts, so -XX:RTMRetryCount=0 55 * is used. For more information abort that issue see 56 * {@link TestUseRTMAfterLockInflation}. 57 */ 58 public class TestUseRTMForStackLocks extends CommandLineOptionTest { 59 private static final boolean INFLATE_MONITOR = false; 60 61 private TestUseRTMForStackLocks() { 62 super(new AndPredicate(new SupportedCPU(), new SupportedVM())); 63 } 64 65 @Override 66 protected void runTestCases() throws Throwable { 67 AbortProvoker provoker = AbortType.XABORT.provoker(); 68 RTMLockingStatistics lock; 69 70 OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest( 71 provoker, 72 "-XX:+UseRTMForStackLocks", 73 "-XX:RTMTotalCountIncrRate=1", 74 "-XX:RTMRetryCount=0", 75 "-XX:+PrintPreciseRTMLockingStatistics", 76 AbortProvoker.class.getName(), 77 AbortType.XABORT.toString(), 78 Boolean.toString(TestUseRTMForStackLocks.INFLATE_MONITOR)); 79 80 outputAnalyzer.shouldHaveExitValue(0); 81 82 List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString( 83 provoker.getMethodWithLockName(), outputAnalyzer.getOutput()); 84 85 Asserts.assertEQ(statistics.size(), 1, 86 "VM output should contain exactly one rtm locking statistics " 87 + "entry for method " + provoker.getMethodWithLockName()); 88 89 lock = statistics.get(0); 90 Asserts.assertEQ(lock.getTotalLocks(), AbortProvoker.DEFAULT_ITERATIONS, 91 "Total locks count should be greater or equal to " 92 + AbortProvoker.DEFAULT_ITERATIONS); 93 } 94 95 public static void main(String args[]) throws Throwable { 96 new TestUseRTMForStackLocks().test(); 97 } 98 }