| /* |
| * 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 on high abort ratio method will be recompiled |
| * without rtm locking. |
| * @library /testlibrary /testlibrary/whitebox /compiler/testlibrary |
| * @build TestRTMDeoptOnHighAbortRatio |
| * @run main ClassFileInstaller sun.hotspot.WhiteBox |
| * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions |
| * -XX:+WhiteBoxAPI TestRTMDeoptOnHighAbortRatio |
| */ |
| |
| 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 on high abort ratio method wil be deoptimized with |
| * <i>rtm_state_change</i> reason and after that RTM-based lock elision will not |
| * be used for that method. |
| * This test make asserts on total locks count done by compiled method, |
| * so in order to avoid issue with retriable locks -XX:RTMRetryCount=0 is used. |
| * For more details on that issue see {@link TestUseRTMAfterLockInflation}. |
| */ |
| public class TestRTMDeoptOnHighAbortRatio extends CommandLineOptionTest { |
| private static final long ABORT_THRESHOLD |
| = AbortProvoker.DEFAULT_ITERATIONS / 2L; |
| |
| private TestRTMDeoptOnHighAbortRatio() { |
| super(new AndPredicate(new SupportedCPU(), new SupportedVM())); |
| } |
| |
| @Override |
| protected void runTestCases() throws Throwable { |
| verifyDeopt(false); |
| verifyDeopt(true); |
| } |
| |
| private void verifyDeopt(boolean useStackLock) throws Throwable { |
| AbortProvoker provoker = AbortType.XABORT.provoker(); |
| String logFileName = String.format("rtm_deopt_%s_stack_lock.xml", |
| (useStackLock ? "use" : "no")); |
| |
| OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest( |
| logFileName, |
| provoker, |
| "-XX:+UseRTMDeopt", |
| CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks", |
| useStackLock), |
| "-XX:RTMRetryCount=0", |
| CommandLineOptionTest.prepareNumericFlag("RTMAbortThreshold", |
| TestRTMDeoptOnHighAbortRatio.ABORT_THRESHOLD), |
| "-XX:RTMAbortRatio=100", |
| "-XX:CompileThreshold=1", |
| "-XX:RTMTotalCountIncrRate=1", |
| "-XX:+PrintPreciseRTMLockingStatistics", |
| AbortProvoker.class.getName(), |
| AbortType.XABORT.toString(), |
| Boolean.toString(!useStackLock) |
| ); |
| |
| outputAnalyzer.shouldHaveExitValue(0); |
| |
| int firedTraps = RTMTestBase.firedRTMStateChangeTraps(logFileName); |
| |
| Asserts.assertEQ(firedTraps, 1, "Expected to get only one " |
| + "deoptimization due to rtm state change"); |
| |
| List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString( |
| provoker.getMethodWithLockName(), outputAnalyzer.getOutput()); |
| |
| Asserts.assertEQ(statistics.size(), 1, "VM output should contain " |
| + "exactly one RTM locking statistics entry for method " |
| + provoker.getMethodWithLockName()); |
| |
| Asserts.assertEQ(statistics.get(0).getTotalLocks(), |
| TestRTMDeoptOnHighAbortRatio.ABORT_THRESHOLD, |
| "After AbortThreshold was reached, method should be" |
| + " recompiled without rtm lock eliding."); |
| } |
| |
| public static void main(String args[]) throws Throwable { |
| new TestRTMDeoptOnHighAbortRatio().test(); |
| } |
| } |
| |