Mercurial > hg > truffle
diff test/compiler/rtm/locking/TestRTMDeoptOnHighAbortRatio.java @ 18058:54bc75c144b0
Merge
author | asaha |
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date | Thu, 29 May 2014 13:14:25 -0700 |
parents | ba8268c23fa2 |
children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/compiler/rtm/locking/TestRTMDeoptOnHighAbortRatio.java Thu May 29 13:14:25 2014 -0700 @@ -0,0 +1,114 @@ +/* + * 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(); + } +} +