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 RTMAbortThreshold option affects
  29  *          amount of aborts after which abort ratio is calculated.
  30  * @library /test/lib /
  31  * @modules java.base/jdk.internal.misc
  32  *          java.management
  33  * @build sun.hotspot.WhiteBox
  34  * @run driver ClassFileInstaller sun.hotspot.WhiteBox
  35  *                              sun.hotspot.WhiteBox$WhiteBoxPermission
  36  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  37  *                   -XX:+WhiteBoxAPI
  38  *                   compiler.rtm.locking.TestRTMAbortThreshold
  39  */
  40 
  41 package compiler.rtm.locking;
  42 
  43 import compiler.testlibrary.rtm.AbortProvoker;
  44 import compiler.testlibrary.rtm.AbortType;
  45 import compiler.testlibrary.rtm.RTMLockingStatistics;
  46 import compiler.testlibrary.rtm.RTMTestBase;
  47 import compiler.testlibrary.rtm.predicate.SupportedCPU;
  48 import compiler.testlibrary.rtm.predicate.SupportedVM;
  49 import jdk.test.lib.Asserts;
  50 import jdk.test.lib.process.OutputAnalyzer;
  51 import jdk.test.lib.cli.CommandLineOptionTest;
  52 import jdk.test.lib.cli.predicate.AndPredicate;
  53 
  54 import java.util.List;
  55 
  56 /**
  57  * Test verifies that on RTMAbortThreshold option actually affects how soon
  58  * method will be deoptimized on high abort ratio.
  59  */
  60 public class TestRTMAbortThreshold extends CommandLineOptionTest {
  61     private TestRTMAbortThreshold() {
  62         super(new AndPredicate(new SupportedCPU(), new SupportedVM()));
  63     }
  64 
  65     @Override
  66     protected void runTestCases() throws Throwable {
  67         verifyAbortThreshold(false, 1);
  68         verifyAbortThreshold(false, 10);
  69         verifyAbortThreshold(false, 1000);
  70 
  71         verifyAbortThreshold(true, 1);
  72         verifyAbortThreshold(true, 10);
  73         verifyAbortThreshold(true, 1000);
  74     }
  75 
  76     private void verifyAbortThreshold(boolean useStackLock,
  77             long abortThreshold) throws Throwable {
  78         AbortProvoker provoker = AbortType.XABORT.provoker();
  79 
  80         OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
  81                 provoker,
  82                 "-XX:+UseRTMDeopt",
  83                 "-XX:RTMAbortRatio=0",
  84                 CommandLineOptionTest.prepareNumericFlag("RTMAbortThreshold",
  85                         abortThreshold),
  86                 CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks",
  87                         useStackLock),
  88                 "-XX:RTMTotalCountIncrRate=1",
  89                 "-XX:+PrintPreciseRTMLockingStatistics",
  90                 AbortProvoker.class.getName(),
  91                 AbortType.XABORT.toString(),
  92                 Boolean.toString(!useStackLock));
  93 
  94         outputAnalyzer.shouldHaveExitValue(0);
  95 
  96         List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(
  97                 provoker.getMethodWithLockName(), outputAnalyzer.getOutput());
  98 
  99         Asserts.assertEQ(statistics.size(), 1, "VM output should contain "
 100                 + "exactly one RTM locking statistics entry for method "
 101                 + provoker.getMethodWithLockName());
 102 
 103         Asserts.assertEQ(statistics.get(0).getTotalLocks(), abortThreshold,
 104                 String.format("Expected that method with rtm lock elision was"
 105                         + " deoptimized after %d lock attempts",
 106                         abortThreshold));
 107     }
 108 
 109     public static void main(String args[]) throws Throwable {
 110          new TestRTMAbortThreshold().test();
 111     }
 112 }
 113