1 /*
   2  * Copyright (c) 2014, 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 RTMRetryCount affects actual amount of retries.
  29  * @library /testlibrary /testlibrary/whitebox /compiler/testlibrary
  30  * @build TestRTMRetryCount
  31  * @run main ClassFileInstaller sun.hotspot.WhiteBox
  32  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  33  *                   -XX:+WhiteBoxAPI TestRTMRetryCount
  34  */
  35 
  36 import java.util.List;
  37 
  38 import com.oracle.java.testlibrary.*;
  39 import com.oracle.java.testlibrary.cli.CommandLineOptionTest;
  40 import com.oracle.java.testlibrary.cli.predicate.AndPredicate;
  41 import rtm.*;
  42 import rtm.predicate.SupportedCPU;
  43 import rtm.predicate.SupportedVM;
  44 
  45 /**
  46  * Test verifies that RTMRetryCount option actually affects amount of
  47  * retries on lock busy.
  48  */
  49 public class TestRTMRetryCount extends CommandLineOptionTest {
  50     /**
  51      * Time in ms, during which busy lock will be locked.
  52      */
  53     private static final int LOCKING_TIME = 5000;
  54     private static final boolean INFLATE_MONITOR = true;
  55 
  56     private TestRTMRetryCount() {
  57         super(new AndPredicate(new SupportedCPU(), new SupportedVM()));
  58     }
  59 
  60     @Override
  61     protected void runTestCases() throws Throwable {
  62         verifyRTMRetryCount(0);
  63         verifyRTMRetryCount(1);
  64         verifyRTMRetryCount(5);
  65         verifyRTMRetryCount(10);
  66     }
  67 
  68     private void verifyRTMRetryCount(int retryCount) throws Throwable {
  69         CompilableTest busyLock = new BusyLock();
  70         long expectedAborts = retryCount + 1L;
  71 
  72         OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
  73                 busyLock,
  74                 "-XX:-UseRTMXendForLockBusy",
  75                 "-XX:RTMTotalCountIncrRate=1",
  76                 CommandLineOptionTest.prepareNumericFlag("RTMRetryCount",
  77                         retryCount),
  78                 "-XX:RTMTotalCountIncrRate=1",
  79                 "-XX:+PrintPreciseRTMLockingStatistics",
  80                 BusyLock.class.getName(),
  81                 Boolean.toString(TestRTMRetryCount.INFLATE_MONITOR),
  82                 Integer.toString(TestRTMRetryCount.LOCKING_TIME)
  83         );
  84 
  85         outputAnalyzer.shouldHaveExitValue(0);
  86 
  87         List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(
  88                 busyLock.getMethodWithLockName(), outputAnalyzer.getStdout());
  89 
  90         Asserts.assertEQ(statistics.size(), 1, "VM output should contain "
  91                 + "exactly one rtm locking statistics entry for method "
  92                 + busyLock.getMethodWithLockName());
  93 
  94         Asserts.assertEQ(statistics.get(0).getTotalAborts(), expectedAborts,
  95                 String.format("It is expected to get %d aborts",
  96                         expectedAborts));
  97     }
  98 
  99     public static void main(String args[]) throws Throwable {
 100         new TestRTMRetryCount().test();
 101     }
 102 }