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