author | stsmirno |
Mon, 17 Oct 2016 18:54:12 -0400 | |
changeset 41705 | 332239c052cc |
parent 41330 | 8b2580e63aa0 |
child 46515 | dbb676a40899 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2014, 2016, 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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* @test |
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* @bug 8031320 |
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* @summary Verify that on low abort ratio method will be recompiled. |
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* @library /test/lib / |
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* @modules java.base/jdk.internal.misc |
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* java.management |
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* @build sun.hotspot.WhiteBox |
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* @run driver ClassFileInstaller sun.hotspot.WhiteBox |
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* sun.hotspot.WhiteBox$WhiteBoxPermission |
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* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions |
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* -XX:+WhiteBoxAPI |
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* compiler.rtm.locking.TestRTMDeoptOnLowAbortRatio |
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*/ |
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package compiler.rtm.locking; |
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import compiler.testlibrary.rtm.AbortProvoker; |
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import compiler.testlibrary.rtm.CompilableTest; |
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import compiler.testlibrary.rtm.RTMLockingStatistics; |
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import compiler.testlibrary.rtm.RTMTestBase; |
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import compiler.testlibrary.rtm.predicate.SupportedCPU; |
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import compiler.testlibrary.rtm.predicate.SupportedOS; |
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import compiler.testlibrary.rtm.predicate.SupportedVM; |
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import jdk.internal.misc.Unsafe; |
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import jdk.test.lib.Asserts; |
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import jdk.test.lib.process.OutputAnalyzer; |
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import jdk.test.lib.cli.CommandLineOptionTest; |
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import jdk.test.lib.cli.predicate.AndPredicate; |
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import java.util.List; |
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/** |
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* Test verifies that low abort ratio method will be deoptimized with |
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* <i>rtm_state_change</i> reason and will continue to use RTM-based lock |
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* elision after that. |
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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 TestRTMDeoptOnLowAbortRatio extends CommandLineOptionTest { |
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private static final long LOCKING_THRESHOLD = 100L; |
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private static final long ABORT_THRESHOLD = LOCKING_THRESHOLD / 2L; |
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private TestRTMDeoptOnLowAbortRatio() { |
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super(new AndPredicate(new SupportedCPU(), new SupportedOS(), new SupportedVM())); |
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} |
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@Override |
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protected void runTestCases() throws Throwable { |
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verifyRTMDeopt(false); |
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verifyRTMDeopt(true); |
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} |
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private void verifyRTMDeopt(boolean useStackLock) throws Throwable { |
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CompilableTest test = new Test(); |
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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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test, |
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"-XX:+UseRTMDeopt", |
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CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks", |
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useStackLock), |
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CommandLineOptionTest.prepareNumericFlag("RTMLockingThreshold", |
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TestRTMDeoptOnLowAbortRatio.LOCKING_THRESHOLD), |
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CommandLineOptionTest.prepareNumericFlag("RTMAbortThreshold", |
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TestRTMDeoptOnLowAbortRatio.ABORT_THRESHOLD), |
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"-XX:RTMAbortRatio=100", |
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"-XX:CompileThreshold=1", |
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"-XX:RTMRetryCount=0", |
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"-XX:RTMTotalCountIncrRate=1", |
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"-XX:+PrintPreciseRTMLockingStatistics", |
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Test.class.getName(), |
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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, |
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"Expected to get only one deoptimization due to rtm" |
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+ " state change"); |
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List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString( |
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test.getMethodWithLockName(), outputAnalyzer.getOutput()); |
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Asserts.assertEQ(statistics.size(), 2, |
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"VM output should contain two RTM locking " |
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+ "statistics entries for method " |
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+ test.getMethodWithLockName()); |
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RTMLockingStatistics statisticsBeforeDeopt = null; |
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for (RTMLockingStatistics s : statistics) { |
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if (s.getTotalLocks() |
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== TestRTMDeoptOnLowAbortRatio.LOCKING_THRESHOLD) { |
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Asserts.assertNull(statisticsBeforeDeopt, |
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"Only one abort was expected during test run"); |
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statisticsBeforeDeopt = s; |
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} |
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} |
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Asserts.assertNotNull(statisticsBeforeDeopt, |
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"After LockThreshold was reached, method should be recompiled " |
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+ "with rtm lock eliding."); |
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} |
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public static class Test implements CompilableTest { |
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private static final Unsafe UNSAFE = Unsafe.getUnsafe(); |
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private final Object monitor = new Object(); |
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@Override |
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public String getMethodWithLockName() { |
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return this.getClass().getName() + "::forceAbort"; |
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} |
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@Override |
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public String[] getMethodsToCompileNames() { |
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return new String[] { getMethodWithLockName() }; |
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} |
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|
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public void forceAbort(boolean abort) { |
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synchronized(monitor) { |
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if (abort) { |
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Test.UNSAFE.addressSize(); |
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} |
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} |
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} |
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|
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/** |
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* Usage: |
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* Test <inflate monitor> |
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*/ |
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public static void main(String args[]) throws Throwable { |
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Asserts.assertGTE(args.length, 1, "One argument required."); |
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Test t = new Test(); |
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boolean shouldBeInflated = Boolean.valueOf(args[0]); |
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if (shouldBeInflated) { |
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AbortProvoker.inflateMonitor(t.monitor); |
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} |
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for (int i = 0; i < AbortProvoker.DEFAULT_ITERATIONS; i++) { |
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AbortProvoker.verifyMonitorState(t.monitor, shouldBeInflated); |
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t.forceAbort(i >= TestRTMDeoptOnLowAbortRatio.ABORT_THRESHOLD); |
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} |
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} |
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} |
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|
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public static void main(String args[]) throws Throwable { |
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new TestRTMDeoptOnLowAbortRatio().test(); |
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} |
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} |