Mercurial > hg > graal-compiler
view test/compiler/rtm/locking/TestRTMSpinLoopCount.java @ 21918:0ab08be12bbb
Merge
author | Stefan Anzinger <stefan.anzinger@oracle.com> |
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date | Thu, 11 Jun 2015 11:35:55 +0200 |
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 RTMSpinLoopCount affects time spent * between locking attempts. * @library /testlibrary /testlibrary/whitebox /compiler/testlibrary * @build TestRTMSpinLoopCount * @run main ClassFileInstaller sun.hotspot.WhiteBox * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions * -XX:+WhiteBoxAPI TestRTMSpinLoopCount */ 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 RTMSpinLoopCount increase time spent between retries * by comparing amount of retries done with different RTMSpinLoopCount's values. */ public class TestRTMSpinLoopCount extends CommandLineOptionTest { private static final int LOCKING_TIME = 1000; private static final int RTM_RETRY_COUNT = 1000; private static final boolean INFLATE_MONITOR = true; private static final long MAX_ABORTS = RTM_RETRY_COUNT + 1L; private static final int[] SPIN_LOOP_COUNTS = new int[] { 0, 100, 1_000, 1_000_000, 10_000_000 }; private TestRTMSpinLoopCount() { super(new AndPredicate(new SupportedVM(), new SupportedCPU())); } @Override protected void runTestCases() throws Throwable { long[] aborts = new long[TestRTMSpinLoopCount.SPIN_LOOP_COUNTS.length]; for (int i = 0; i < TestRTMSpinLoopCount.SPIN_LOOP_COUNTS.length; i++) { aborts[i] = getAbortsCountOnLockBusy( TestRTMSpinLoopCount.SPIN_LOOP_COUNTS[i]); } for (int i = 1; i < aborts.length; i++) { Asserts.assertLTE(aborts[i], aborts[i - 1], "Increased spin loop " + "count should not increase retries count."); } } private long getAbortsCountOnLockBusy(int spinLoopCount) throws Throwable { CompilableTest test = new BusyLock(); OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest( test, CommandLineOptionTest.prepareNumericFlag("RTMRetryCount", TestRTMSpinLoopCount.RTM_RETRY_COUNT), CommandLineOptionTest.prepareNumericFlag("RTMSpinLoopCount", spinLoopCount), "-XX:-UseRTMXendForLockBusy", "-XX:RTMTotalCountIncrRate=1", "-XX:+PrintPreciseRTMLockingStatistics", BusyLock.class.getName(), Boolean.toString(TestRTMSpinLoopCount.INFLATE_MONITOR), Integer.toString(TestRTMSpinLoopCount.LOCKING_TIME) ); outputAnalyzer.shouldHaveExitValue(0); List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString( test.getMethodWithLockName(), outputAnalyzer.getOutput()); Asserts.assertEQ(statistics.size(), 1, "VM output should contain exactly one entry for method " + test.getMethodWithLockName()); RTMLockingStatistics lock = statistics.get(0); Asserts.assertLTE(lock.getTotalAborts(), TestRTMSpinLoopCount.MAX_ABORTS, String.format("Total aborts " + "count (%d) should be less or equal to %d", lock.getTotalAborts(), TestRTMSpinLoopCount.MAX_ABORTS)); return lock.getTotalAborts(); } public static void main(String args[]) throws Throwable { new TestRTMSpinLoopCount().test(); } }