1 /*
   2  * Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 /**
  26  * @test
  27  * @bug 8031320
  28  * @summary Verify that UseRTMXendForLockBusy option affects
  29  *          method behaviour if lock is busy.
  30  * @library /testlibrary /test/lib /
  31  * @modules java.base/jdk.internal.misc
  32  *          java.management
  33  * @build TestUseRTMXendForLockBusy
  34  * @run driver ClassFileInstaller sun.hotspot.WhiteBox
  35  *                                sun.hotspot.WhiteBox$WhiteBoxPermission
  36  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  37  *                   -XX:+WhiteBoxAPI TestUseRTMXendForLockBusy
  38  */
  39 
  40 import java.util.List;
  41 
  42 import jdk.test.lib.*;
  43 import jdk.test.lib.cli.CommandLineOptionTest;
  44 import jdk.test.lib.cli.predicate.AndPredicate;
  45 import compiler.testlibrary.rtm.*;
  46 import compiler.testlibrary.rtm.predicate.SupportedCPU;
  47 import compiler.testlibrary.rtm.predicate.SupportedVM;
  48 
  49 /**
  50  * Test verifies that with +UseRTMXendForLockBusy there will be no aborts
  51  * forced by the test.
  52  */
  53 public class TestUseRTMXendForLockBusy extends CommandLineOptionTest {
  54     private final static int LOCKING_TIME = 5000;
  55 
  56     private TestUseRTMXendForLockBusy() {
  57         super(new AndPredicate(new SupportedVM(), new SupportedCPU()));
  58     }
  59 
  60     @Override
  61     protected void runTestCases() throws Throwable {
  62         // inflated lock, xabort on lock busy
  63         verifyXendForLockBusy(true, false);
  64         // inflated lock, xend on lock busy
  65         verifyXendForLockBusy(true, true);
  66         // stack lock, xabort on lock busy
  67         verifyXendForLockBusy(false, false);
  68         // stack lock, xend on lock busy
  69         verifyXendForLockBusy(false, true);
  70     }
  71 
  72     private void verifyXendForLockBusy(boolean inflateMonitor,
  73             boolean useXend) throws Throwable {
  74         CompilableTest test = new BusyLock();
  75 
  76         OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
  77                 test,
  78                 CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks",
  79                         inflateMonitor),
  80                 CommandLineOptionTest.prepareBooleanFlag(
  81                         "UseRTMXendForLockBusy",
  82                         useXend),
  83                 "-XX:RTMRetryCount=0",
  84                 "-XX:RTMTotalCountIncrRate=1",
  85                 "-XX:+PrintPreciseRTMLockingStatistics",
  86                 BusyLock.class.getName(),
  87                 Boolean.toString(inflateMonitor),
  88                 Integer.toString(TestUseRTMXendForLockBusy.LOCKING_TIME)
  89         );
  90 
  91         outputAnalyzer.shouldHaveExitValue(0);
  92 
  93         List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(
  94                 test.getMethodWithLockName(), outputAnalyzer.getOutput());
  95 
  96         Asserts.assertEQ(statistics.size(), 1, "VM output should contain "
  97                 + "exactly one rtm locking statistics entry for method "
  98                 + test.getMethodWithLockName());
  99 
 100         long aborts = statistics.get(0).getAborts(AbortType.XABORT);
 101 
 102         if (useXend) {
 103             Asserts.assertEQ(aborts, 0L,
 104                     "Expected to get no aborts on busy lock");
 105         } else {
 106             Asserts.assertGT(aborts, 0L,
 107                     "Expected to get at least one abort on busy lock");
 108         }
 109     }
 110 
 111     public static void main(String args[]) throws Throwable {
 112         new TestUseRTMXendForLockBusy().test();
 113     }
 114 }