Mercurial > hg > truffle
view test/compiler/rtm/locking/TestRTMAbortRatio.java @ 21864:e44b10693a44
Added tag jdk8u45-b11 for changeset f4822d122041
author | asaha |
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date | Mon, 09 Mar 2015 12:35:33 -0700 |
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 RTMAbortRatio affects amount of aborts before * deoptimization. * @library /testlibrary /testlibrary/whitebox /compiler/testlibrary * @build TestRTMAbortRatio * @run main ClassFileInstaller sun.hotspot.WhiteBox * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions * -XX:+WhiteBoxAPI TestRTMAbortRatio */ 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; import sun.misc.Unsafe; /** * Test verifies that method will be deoptimized on high abort ratio * as soon as abort ratio reaches RTMAbortRatio's value. */ public class TestRTMAbortRatio extends CommandLineOptionTest { private TestRTMAbortRatio() { super(new AndPredicate(new SupportedCPU(), new SupportedVM())); } @Override protected void runTestCases() throws Throwable { verifyAbortRatio(0, false); verifyAbortRatio(10, false); verifyAbortRatio(50, false); verifyAbortRatio(100, false); verifyAbortRatio(0, true); verifyAbortRatio(10, true); verifyAbortRatio(50, true); verifyAbortRatio(100, true); } private void verifyAbortRatio(int abortRatio, boolean useStackLock) throws Throwable { CompilableTest test = new Test(); OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest( test, CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks", useStackLock), "-XX:+UseRTMDeopt", "-XX:RTMTotalCountIncrRate=1", "-XX:RTMAbortThreshold=0", CommandLineOptionTest.prepareNumericFlag("RTMLockingThreshold", 10 * Test.TOTAL_ITERATIONS), CommandLineOptionTest.prepareNumericFlag("RTMAbortRatio", abortRatio), "-XX:+PrintPreciseRTMLockingStatistics", test.getClass().getName(), Boolean.toString(!useStackLock)); outputAnalyzer.shouldHaveExitValue(0); List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString( test.getMethodWithLockName(), outputAnalyzer.getOutput()); Asserts.assertEQ(statistics.size(), 1, "VM output should contain " + "exactly one RTM locking statistics entry."); RTMLockingStatistics lock = statistics.get(0); int actualRatio; if (lock.getTotalAborts() == 1L) { actualRatio = 0; } else { actualRatio = (int) (lock.getTotalLocks() / (lock.getTotalAborts() - 1L)); } Asserts.assertLTE(actualRatio, abortRatio, String.format( "Actual abort ratio (%d) should lower or equal to " + "specified (%d).", actualRatio, abortRatio)); } /** * Force abort after {@code Test.WARMUP_ITERATIONS} is done. */ public static class Test implements CompilableTest { private static final int TOTAL_ITERATIONS = 10000; private static final int WARMUP_ITERATIONS = 1000; private static final Unsafe UNSAFE = Utils.getUnsafe(); private final Object monitor = new Object(); // Following field have to be static in order to avoid escape analysis. @SuppressWarnings("UnsuedDeclaration") private static int field = 0; @Override public String getMethodWithLockName() { return this.getClass().getName() + "::lock"; } @Override public String[] getMethodsToCompileNames() { return new String[] { getMethodWithLockName(), Unsafe.class.getName() + "::addressSize" }; } public void lock(boolean abort) { synchronized(monitor) { if (abort) { Test.UNSAFE.addressSize(); } } } /** * Usage: * Test <inflate monitor> */ public static void main(String args[]) throws Throwable { Asserts.assertGTE(args.length, 1, "One argument required."); Test t = new Test(); if (Boolean.valueOf(args[0])) { AbortProvoker.inflateMonitor(t.monitor); } for (int i = 0; i < Test.TOTAL_ITERATIONS; i++) { t.lock(i >= Test.WARMUP_ITERATIONS); } } } public static void main(String args[]) throws Throwable { new TestRTMAbortRatio().test(); } }