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