| /* |
| * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| /** |
| * @test |
| * @bug 8031320 |
| * @summary Verify that rtm locking is used for stack locks before |
| * inflation and after it used for inflated locks. |
| * @library /testlibrary /testlibrary/whitebox /compiler/testlibrary |
| * @build TestUseRTMAfterLockInflation |
| * @run main ClassFileInstaller sun.hotspot.WhiteBox |
| * sun.hotspot.WhiteBox$WhiteBoxPermission |
| * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions |
| * -XX:+WhiteBoxAPI TestUseRTMAfterLockInflation |
| */ |
| |
| import java.util.List; |
| |
| import com.oracle.java.testlibrary.*; |
| import com.oracle.java.testlibrary.cli.CommandLineOptionTest; |
| import com.oracle.java.testlibrary.cli.predicate.AndPredicate; |
| import rtm.*; |
| import rtm.predicate.SupportedCPU; |
| import rtm.predicate.SupportedVM; |
| |
| /** |
| * Test verifies that RTM is used after lock inflation by executing compiled |
| * method with RTM-based lock elision using stack lock first, then that lock |
| * is inflated and the same compiled method invoked again. |
| * |
| * Compiled method invoked {@code AbortProvoker.DEFAULT_ITERATIONS} times before |
| * lock inflation and the same amount of times after inflation. |
| * As a result total locks count should be equal to |
| * {@code 2*AbortProvoker.DEFAULT_ITERATIONS}. |
| * It is a pretty strict assertion which could fail if some retriable abort |
| * happened: it could be {@code AbortType.RETRIABLE} or |
| * {@code AbortType.MEM_CONFLICT}, but unfortunately abort can has both these |
| * reasons simultaneously. In order to avoid false negative failures related |
| * to incorrect aborts counting, -XX:RTMRetryCount=0 is used. |
| */ |
| public class TestUseRTMAfterLockInflation extends CommandLineOptionTest { |
| private static final long EXPECTED_LOCKS |
| = 2L * AbortProvoker.DEFAULT_ITERATIONS; |
| |
| private TestUseRTMAfterLockInflation() { |
| super(new AndPredicate(new SupportedVM(), new SupportedCPU())); |
| } |
| |
| @Override |
| protected void runTestCases() throws Throwable { |
| AbortProvoker provoker = AbortType.XABORT.provoker(); |
| long totalLocksCount = 0; |
| |
| OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest( |
| provoker, |
| "-XX:+UseRTMForStackLocks", |
| "-XX:RTMTotalCountIncrRate=1", |
| "-XX:RTMRetryCount=0", |
| "-XX:+PrintPreciseRTMLockingStatistics", |
| Test.class.getName(), |
| AbortType.XABORT.toString()); |
| |
| outputAnalyzer.shouldHaveExitValue(0); |
| |
| List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString( |
| provoker.getMethodWithLockName(), outputAnalyzer.getOutput()); |
| |
| Asserts.assertEQ(statistics.size(), 2, |
| "VM output should contain two rtm locking statistics entries " |
| + "for method " + provoker.getMethodWithLockName()); |
| |
| for (RTMLockingStatistics s : statistics) { |
| totalLocksCount += s.getTotalLocks(); |
| } |
| |
| Asserts.assertEQ(totalLocksCount, |
| TestUseRTMAfterLockInflation.EXPECTED_LOCKS, |
| "Total lock count should be greater or equal to " |
| + TestUseRTMAfterLockInflation.EXPECTED_LOCKS); |
| } |
| |
| public static class Test { |
| |
| /** |
| * Usage: |
| * Test <provoker type> |
| */ |
| public static void main(String args[]) throws Throwable { |
| Asserts.assertGT(args.length, 0, |
| "AbortType name is expected as first argument."); |
| |
| AbortProvoker provoker |
| = AbortType.lookup(Integer.valueOf(args[0])).provoker(); |
| for (int i = 0; i < AbortProvoker.DEFAULT_ITERATIONS; i++) { |
| provoker.forceAbort(); |
| } |
| provoker.inflateMonitor(); |
| for (int i = 0; i < AbortProvoker.DEFAULT_ITERATIONS; i++) { |
| provoker.forceAbort(); |
| } |
| } |
| } |
| |
| public static void main(String args[]) throws Throwable { |
| new TestUseRTMAfterLockInflation().test(); |
| } |
| } |