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