diff -r 6841a4be0faa -r 54399106938f hotspot/test/compiler/rtm/locking/TestRTMAbortRatio.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/hotspot/test/compiler/rtm/locking/TestRTMAbortRatio.java Fri Apr 11 00:35:23 2014 +0400 @@ -0,0 +1,163 @@ +/* + * 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 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(); + } +} +