author | mgerdin |
Mon, 11 Aug 2014 17:12:41 +0400 | |
changeset 25958 | 8dc85547d6d6 |
parent 24006 | 54399106938f |
child 28190 | 5a6b07edeb21 |
permissions | -rw-r--r-- |
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/* |
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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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/** |
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* @test |
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* @bug 8031320 |
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* @summary Verify that RTMSpinLoopCount affects time spent |
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* between locking attempts. |
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* @library /testlibrary /testlibrary/whitebox /compiler/testlibrary |
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* @build TestRTMSpinLoopCount |
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* @run main 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 TestRTMSpinLoopCount |
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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 RTMSpinLoopCount increase time spent between retries |
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* by comparing amount of retries done with different RTMSpinLoopCount's values. |
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*/ |
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public class TestRTMSpinLoopCount extends CommandLineOptionTest { |
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private static final int LOCKING_TIME = 1000; |
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private static final int RTM_RETRY_COUNT = 1000; |
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private static final boolean INFLATE_MONITOR = true; |
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private static final long MAX_ABORTS = RTM_RETRY_COUNT + 1L; |
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private static final int[] SPIN_LOOP_COUNTS |
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= new int[] { 0, 100, 1_000, 1_000_000, 10_000_000 }; |
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private TestRTMSpinLoopCount() { |
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super(new AndPredicate(new SupportedVM(), new SupportedCPU())); |
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} |
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@Override |
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protected void runTestCases() throws Throwable { |
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long[] aborts = new long[TestRTMSpinLoopCount.SPIN_LOOP_COUNTS.length]; |
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for (int i = 0; i < TestRTMSpinLoopCount.SPIN_LOOP_COUNTS.length; i++) { |
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aborts[i] = getAbortsCountOnLockBusy( |
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TestRTMSpinLoopCount.SPIN_LOOP_COUNTS[i]); |
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} |
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for (int i = 1; i < aborts.length; i++) { |
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Asserts.assertLTE(aborts[i], aborts[i - 1], "Increased spin loop " |
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+ "count should not increase retries count."); |
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} |
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} |
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private long getAbortsCountOnLockBusy(int spinLoopCount) throws Throwable { |
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CompilableTest test = new BusyLock(); |
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OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest( |
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test, |
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CommandLineOptionTest.prepareNumericFlag("RTMRetryCount", |
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TestRTMSpinLoopCount.RTM_RETRY_COUNT), |
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CommandLineOptionTest.prepareNumericFlag("RTMSpinLoopCount", |
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spinLoopCount), |
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"-XX:-UseRTMXendForLockBusy", |
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"-XX:RTMTotalCountIncrRate=1", |
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"-XX:+PrintPreciseRTMLockingStatistics", |
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BusyLock.class.getName(), |
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Boolean.toString(TestRTMSpinLoopCount.INFLATE_MONITOR), |
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Integer.toString(TestRTMSpinLoopCount.LOCKING_TIME) |
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); |
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outputAnalyzer.shouldHaveExitValue(0); |
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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(), 1, |
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"VM output should contain exactly one entry for method " |
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+ test.getMethodWithLockName()); |
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|
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RTMLockingStatistics lock = statistics.get(0); |
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Asserts.assertLTE(lock.getTotalAborts(), |
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TestRTMSpinLoopCount.MAX_ABORTS, String.format("Total aborts " |
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+ "count (%d) should be less or equal to %d", |
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lock.getTotalAborts(), |
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TestRTMSpinLoopCount.MAX_ABORTS)); |
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return lock.getTotalAborts(); |
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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 TestRTMSpinLoopCount().test(); |
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} |
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} |