1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/test/compiler/rtm/locking/TestRTMSpinLoopCount.java Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,115 @@
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 RTMSpinLoopCount affects time spent
1.32 + * between locking attempts.
1.33 + * @library /testlibrary /testlibrary/whitebox /compiler/testlibrary
1.34 + * @build TestRTMSpinLoopCount
1.35 + * @run main ClassFileInstaller sun.hotspot.WhiteBox
1.36 + * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
1.37 + * -XX:+WhiteBoxAPI TestRTMSpinLoopCount
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 +
1.48 +/**
1.49 + * Test verifies that RTMSpinLoopCount increase time spent between retries
1.50 + * by comparing amount of retries done with different RTMSpinLoopCount's values.
1.51 + */
1.52 +public class TestRTMSpinLoopCount extends CommandLineOptionTest {
1.53 + private static final int LOCKING_TIME = 1000;
1.54 + private static final int RTM_RETRY_COUNT = 1000;
1.55 + private static final boolean INFLATE_MONITOR = true;
1.56 + private static final long MAX_ABORTS = RTM_RETRY_COUNT + 1L;
1.57 + private static final int[] SPIN_LOOP_COUNTS
1.58 + = new int[] { 0, 100, 1_000, 1_000_000, 10_000_000 };
1.59 +
1.60 + private TestRTMSpinLoopCount() {
1.61 + super(new AndPredicate(new SupportedVM(), new SupportedCPU()));
1.62 + }
1.63 +
1.64 + @Override
1.65 + protected void runTestCases() throws Throwable {
1.66 + long[] aborts = new long[TestRTMSpinLoopCount.SPIN_LOOP_COUNTS.length];
1.67 + for (int i = 0; i < TestRTMSpinLoopCount.SPIN_LOOP_COUNTS.length; i++) {
1.68 + aborts[i] = getAbortsCountOnLockBusy(
1.69 + TestRTMSpinLoopCount.SPIN_LOOP_COUNTS[i]);
1.70 + }
1.71 +
1.72 + for (int i = 1; i < aborts.length; i++) {
1.73 + Asserts.assertLTE(aborts[i], aborts[i - 1], "Increased spin loop "
1.74 + + "count should not increase retries count.");
1.75 + }
1.76 + }
1.77 +
1.78 + private long getAbortsCountOnLockBusy(int spinLoopCount) throws Throwable {
1.79 + CompilableTest test = new BusyLock();
1.80 +
1.81 + OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
1.82 + test,
1.83 + CommandLineOptionTest.prepareNumericFlag("RTMRetryCount",
1.84 + TestRTMSpinLoopCount.RTM_RETRY_COUNT),
1.85 + CommandLineOptionTest.prepareNumericFlag("RTMSpinLoopCount",
1.86 + spinLoopCount),
1.87 + "-XX:-UseRTMXendForLockBusy",
1.88 + "-XX:RTMTotalCountIncrRate=1",
1.89 + "-XX:+PrintPreciseRTMLockingStatistics",
1.90 + BusyLock.class.getName(),
1.91 + Boolean.toString(TestRTMSpinLoopCount.INFLATE_MONITOR),
1.92 + Integer.toString(TestRTMSpinLoopCount.LOCKING_TIME)
1.93 + );
1.94 +
1.95 + outputAnalyzer.shouldHaveExitValue(0);
1.96 +
1.97 + List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(
1.98 + test.getMethodWithLockName(), outputAnalyzer.getOutput());
1.99 +
1.100 + Asserts.assertEQ(statistics.size(), 1,
1.101 + "VM output should contain exactly one entry for method "
1.102 + + test.getMethodWithLockName());
1.103 +
1.104 + RTMLockingStatistics lock = statistics.get(0);
1.105 +
1.106 + Asserts.assertLTE(lock.getTotalAborts(),
1.107 + TestRTMSpinLoopCount.MAX_ABORTS, String.format("Total aborts "
1.108 + + "count (%d) should be less or equal to %d",
1.109 + lock.getTotalAborts(),
1.110 + TestRTMSpinLoopCount.MAX_ABORTS));
1.111 +
1.112 + return lock.getTotalAborts();
1.113 + }
1.114 +
1.115 + public static void main(String args[]) throws Throwable {
1.116 + new TestRTMSpinLoopCount().test();
1.117 + }
1.118 +}
