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 rtm locking is used for inflated locks.
  29  * @library /testlibrary /../../test/lib /compiler/testlibrary
  30  * @modules java.base/sun.misc
  31  *          java.management
  32  * @build TestUseRTMForInflatedLocks
  33  * @run main ClassFileInstaller sun.hotspot.WhiteBox
  34  *                              sun.hotspot.WhiteBox$WhiteBoxPermission
  35  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  36  *                   -XX:+WhiteBoxAPI TestUseRTMForInflatedLocks
  37  */
  38 
  39 import java.util.List;
  40 
  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 RTM-based lock elision could be used for inflated locks
  50  * by calling compiled method that use RTM-based lock elision and using
  51  * manually inflated lock.
  52  * Compiled method invoked {@code AbortProvoker.DEFAULT_ITERATIONS} times,
  53  * so total locks count should be the same.
  54  * This test could also be affected by retriable aborts, so -XX:RTMRetryCount=0
  55  * is used. For more information abort that issue see
  56  * {@link TestUseRTMAfterLockInflation}.
  57  */
  58 public class TestUseRTMForInflatedLocks extends CommandLineOptionTest {
  59     private TestUseRTMForInflatedLocks() {
  60         super(new AndPredicate(new SupportedCPU(), new SupportedVM()));
  61     }
  62 
  63     @Override
  64     protected void runTestCases() throws Throwable {
  65         AbortProvoker provoker = AbortType.XABORT.provoker();
  66         RTMLockingStatistics lock;
  67 
  68         OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
  69                 provoker,
  70                 "-XX:-UseRTMForStackLocks",
  71                 "-XX:RTMTotalCountIncrRate=1",
  72                 "-XX:RTMRetryCount=0",
  73                 "-XX:+PrintPreciseRTMLockingStatistics",
  74                 AbortProvoker.class.getName(),
  75                 AbortType.XABORT.toString());
  76 
  77         outputAnalyzer.shouldHaveExitValue(0);
  78 
  79         List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(
  80                 provoker.getMethodWithLockName(), outputAnalyzer.getOutput());
  81 
  82         Asserts.assertEQ(statistics.size(), 1,
  83                 "VM output should contain exactly one rtm locking statistics "
  84                 + "entry for method " + provoker.getMethodWithLockName());
  85 
  86         lock = statistics.get(0);
  87         Asserts.assertEQ(lock.getTotalLocks(), AbortProvoker.DEFAULT_ITERATIONS,
  88                 "Total lock count should be greater or equal to "
  89                 + AbortProvoker.DEFAULT_ITERATIONS);
  90     }
  91 
  92     public static void main(String args[]) throws Throwable {
  93         new TestUseRTMForInflatedLocks().test();
  94     }
  95 }