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114 lines
4.6 KiB
114 lines
4.6 KiB
/* |
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* Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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/** |
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* @test |
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* @bug 8031320 |
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* @summary Verify that on high abort ratio method will be recompiled |
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* without rtm locking. |
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* @library /testlibrary /testlibrary/whitebox /compiler/testlibrary |
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* @build TestRTMDeoptOnHighAbortRatio |
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* @run main ClassFileInstaller sun.hotspot.WhiteBox |
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* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions |
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* -XX:+WhiteBoxAPI TestRTMDeoptOnHighAbortRatio |
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*/ |
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import java.util.List; |
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import com.oracle.java.testlibrary.*; |
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import com.oracle.java.testlibrary.cli.CommandLineOptionTest; |
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import com.oracle.java.testlibrary.cli.predicate.AndPredicate; |
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import rtm.*; |
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import rtm.predicate.SupportedCPU; |
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import rtm.predicate.SupportedVM; |
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/** |
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* Test verifies that on high abort ratio method wil be deoptimized with |
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* <i>rtm_state_change</i> reason and after that RTM-based lock elision will not |
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* be used for that method. |
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* This test make asserts on total locks count done by compiled method, |
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* so in order to avoid issue with retriable locks -XX:RTMRetryCount=0 is used. |
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* For more details on that issue see {@link TestUseRTMAfterLockInflation}. |
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*/ |
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public class TestRTMDeoptOnHighAbortRatio extends CommandLineOptionTest { |
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private static final long ABORT_THRESHOLD |
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= AbortProvoker.DEFAULT_ITERATIONS / 2L; |
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private TestRTMDeoptOnHighAbortRatio() { |
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super(new AndPredicate(new SupportedCPU(), new SupportedVM())); |
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} |
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@Override |
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protected void runTestCases() throws Throwable { |
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verifyDeopt(false); |
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verifyDeopt(true); |
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} |
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private void verifyDeopt(boolean useStackLock) throws Throwable { |
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AbortProvoker provoker = AbortType.XABORT.provoker(); |
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String logFileName = String.format("rtm_deopt_%s_stack_lock.xml", |
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(useStackLock ? "use" : "no")); |
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OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest( |
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logFileName, |
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provoker, |
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"-XX:+UseRTMDeopt", |
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CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks", |
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useStackLock), |
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"-XX:RTMRetryCount=0", |
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CommandLineOptionTest.prepareNumericFlag("RTMAbortThreshold", |
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TestRTMDeoptOnHighAbortRatio.ABORT_THRESHOLD), |
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"-XX:RTMAbortRatio=100", |
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"-XX:CompileThreshold=1", |
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"-XX:RTMTotalCountIncrRate=1", |
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"-XX:+PrintPreciseRTMLockingStatistics", |
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AbortProvoker.class.getName(), |
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AbortType.XABORT.toString(), |
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Boolean.toString(!useStackLock) |
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); |
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outputAnalyzer.shouldHaveExitValue(0); |
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int firedTraps = RTMTestBase.firedRTMStateChangeTraps(logFileName); |
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Asserts.assertEQ(firedTraps, 1, "Expected to get only one " |
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+ "deoptimization due to rtm state change"); |
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List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString( |
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provoker.getMethodWithLockName(), outputAnalyzer.getOutput()); |
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Asserts.assertEQ(statistics.size(), 1, "VM output should contain " |
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+ "exactly one RTM locking statistics entry for method " |
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+ provoker.getMethodWithLockName()); |
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Asserts.assertEQ(statistics.get(0).getTotalLocks(), |
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TestRTMDeoptOnHighAbortRatio.ABORT_THRESHOLD, |
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"After AbortThreshold was reached, method should be" |
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+ " recompiled without rtm lock eliding."); |
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} |
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public static void main(String args[]) throws Throwable { |
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new TestRTMDeoptOnHighAbortRatio().test(); |
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} |
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} |
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