1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/test/compiler/rtm/locking/TestRTMAbortRatio.java Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,163 @@
1.4 +/*
1.5 + * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +
1.28 +/**
1.29 + * @test
1.30 + * @bug 8031320
1.31 + * @summary Verify that RTMAbortRatio affects amount of aborts before
1.32 + * deoptimization.
1.33 + * @library /testlibrary /testlibrary/whitebox /compiler/testlibrary
1.34 + * @build TestRTMAbortRatio
1.35 + * @run main ClassFileInstaller sun.hotspot.WhiteBox
1.36 + * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
1.37 + * -XX:+WhiteBoxAPI TestRTMAbortRatio
1.38 + */
1.39 +
1.40 +import java.util.List;
1.41 +import com.oracle.java.testlibrary.*;
1.42 +import com.oracle.java.testlibrary.cli.CommandLineOptionTest;
1.43 +import com.oracle.java.testlibrary.cli.predicate.AndPredicate;
1.44 +import rtm.*;
1.45 +import rtm.predicate.SupportedCPU;
1.46 +import rtm.predicate.SupportedVM;
1.47 +import sun.misc.Unsafe;
1.48 +
1.49 +/**
1.50 + * Test verifies that method will be deoptimized on high abort ratio
1.51 + * as soon as abort ratio reaches RTMAbortRatio's value.
1.52 + */
1.53 +public class TestRTMAbortRatio extends CommandLineOptionTest {
1.54 + private TestRTMAbortRatio() {
1.55 + super(new AndPredicate(new SupportedCPU(), new SupportedVM()));
1.56 + }
1.57 +
1.58 + @Override
1.59 + protected void runTestCases() throws Throwable {
1.60 + verifyAbortRatio(0, false);
1.61 + verifyAbortRatio(10, false);
1.62 + verifyAbortRatio(50, false);
1.63 + verifyAbortRatio(100, false);
1.64 +
1.65 + verifyAbortRatio(0, true);
1.66 + verifyAbortRatio(10, true);
1.67 + verifyAbortRatio(50, true);
1.68 + verifyAbortRatio(100, true);
1.69 + }
1.70 +
1.71 + private void verifyAbortRatio(int abortRatio, boolean useStackLock)
1.72 + throws Throwable {
1.73 + CompilableTest test = new Test();
1.74 +
1.75 + OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
1.76 + test,
1.77 + CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks",
1.78 + useStackLock),
1.79 + "-XX:+UseRTMDeopt",
1.80 + "-XX:RTMTotalCountIncrRate=1",
1.81 + "-XX:RTMAbortThreshold=0",
1.82 + CommandLineOptionTest.prepareNumericFlag("RTMLockingThreshold",
1.83 + 10 * Test.TOTAL_ITERATIONS),
1.84 + CommandLineOptionTest.prepareNumericFlag("RTMAbortRatio",
1.85 + abortRatio),
1.86 + "-XX:+PrintPreciseRTMLockingStatistics",
1.87 + test.getClass().getName(),
1.88 + Boolean.toString(!useStackLock));
1.89 +
1.90 + outputAnalyzer.shouldHaveExitValue(0);
1.91 +
1.92 + List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(
1.93 + test.getMethodWithLockName(), outputAnalyzer.getOutput());
1.94 +
1.95 + Asserts.assertEQ(statistics.size(), 1, "VM output should contain "
1.96 + + "exactly one RTM locking statistics entry.");
1.97 +
1.98 + RTMLockingStatistics lock = statistics.get(0);
1.99 + int actualRatio;
1.100 +
1.101 + if (lock.getTotalAborts() == 1L) {
1.102 + actualRatio = 0;
1.103 + } else {
1.104 + actualRatio = (int) (lock.getTotalLocks()
1.105 + / (lock.getTotalAborts() - 1L));
1.106 + }
1.107 +
1.108 + Asserts.assertLTE(actualRatio, abortRatio, String.format(
1.109 + "Actual abort ratio (%d) should lower or equal to "
1.110 + + "specified (%d).", actualRatio, abortRatio));
1.111 + }
1.112 +
1.113 + /**
1.114 + * Force abort after {@code Test.WARMUP_ITERATIONS} is done.
1.115 + */
1.116 + public static class Test implements CompilableTest {
1.117 + private static final int TOTAL_ITERATIONS = 10000;
1.118 + private static final int WARMUP_ITERATIONS = 1000;
1.119 + private static final Unsafe UNSAFE = Utils.getUnsafe();
1.120 + private final Object monitor = new Object();
1.121 + // Following field have to be static in order to avoid escape analysis.
1.122 + @SuppressWarnings("UnsuedDeclaration")
1.123 + private static int field = 0;
1.124 +
1.125 + @Override
1.126 + public String getMethodWithLockName() {
1.127 + return this.getClass().getName() + "::lock";
1.128 + }
1.129 +
1.130 + @Override
1.131 + public String[] getMethodsToCompileNames() {
1.132 + return new String[] {
1.133 + getMethodWithLockName(),
1.134 + Unsafe.class.getName() + "::addressSize"
1.135 + };
1.136 + }
1.137 +
1.138 + public void lock(boolean abort) {
1.139 + synchronized(monitor) {
1.140 + if (abort) {
1.141 + Test.UNSAFE.addressSize();
1.142 + }
1.143 + }
1.144 + }
1.145 +
1.146 + /**
1.147 + * Usage:
1.148 + * Test <inflate monitor>
1.149 + */
1.150 + public static void main(String args[]) throws Throwable {
1.151 + Asserts.assertGTE(args.length, 1, "One argument required.");
1.152 + Test t = new Test();
1.153 + if (Boolean.valueOf(args[0])) {
1.154 + AbortProvoker.inflateMonitor(t.monitor);
1.155 + }
1.156 + for (int i = 0; i < Test.TOTAL_ITERATIONS; i++) {
1.157 + t.lock(i >= Test.WARMUP_ITERATIONS);
1.158 + }
1.159 + }
1.160 + }
1.161 +
1.162 + public static void main(String args[]) throws Throwable {
1.163 + new TestRTMAbortRatio().test();
1.164 + }
1.165 +}
1.166 +
