Mercurial > hg > truffle
view test/compiler/rtm/locking/TestRTMDeoptOnHighAbortRatio.java @ 18489:1a21e7ced544
Add missing javadoc.
author | Roland Schatz <roland.schatz@oracle.com> |
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date | Mon, 24 Nov 2014 13:20:02 +0100 |
parents | ba8268c23fa2 |
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/* * 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(); } }