1 /*
   2  * Copyright (c) 2014, 2019, 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  * @test
  26  * @bug 8031320
  27  * @summary Verify that rtm locking is used for inflated locks.
  28  * @library /test/lib /
  29  * @modules java.base/jdk.internal.misc
  30  *          java.management
  31  * @requires vm.rtm.cpu & vm.rtm.compiler
  32  * @build sun.hotspot.WhiteBox
  33  * @run driver ClassFileInstaller sun.hotspot.WhiteBox
  34  *                                sun.hotspot.WhiteBox$WhiteBoxPermission
  35  * @run main/othervm/native -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  36  *                          -XX:+WhiteBoxAPI
  37  *                          compiler.rtm.locking.TestUseRTMForInflatedLocks
  38  */
  39 
  40 package compiler.rtm.locking;
  41 
  42 import compiler.testlibrary.rtm.AbortProvoker;
  43 import compiler.testlibrary.rtm.AbortType;
  44 import compiler.testlibrary.rtm.RTMLockingStatistics;
  45 import compiler.testlibrary.rtm.RTMTestBase;
  46 import jdk.test.lib.Asserts;
  47 import jdk.test.lib.process.OutputAnalyzer;
  48 
  49 import java.util.List;
  50 
  51 /**
  52  * Test verifies that RTM-based lock elision could be used for inflated locks
  53  * by calling compiled method that use RTM-based lock elision and using
  54  * manually inflated lock.
  55  * Compiled method invoked {@code AbortProvoker.DEFAULT_ITERATIONS} times,
  56  * so total locks count should be the same.
  57  * This test could also be affected by retriable aborts, so -XX:RTMRetryCount=0
  58  * is used. For more information abort that issue see
  59  * {@link TestUseRTMAfterLockInflation}.
  60  */
  61 public class TestUseRTMForInflatedLocks {
  62 
  63     protected void runTestCases() throws Throwable {
  64         AbortProvoker provoker = AbortType.XABORT.provoker();
  65         RTMLockingStatistics lock;
  66 
  67         OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
  68                 provoker,
  69                 "-XX:-UseRTMForStackLocks",
  70                 "-XX:RTMTotalCountIncrRate=1",
  71                 "-XX:RTMRetryCount=0",
  72                 "-XX:+PrintPreciseRTMLockingStatistics",
  73                 AbortProvoker.class.getName(),
  74                 AbortType.XABORT.toString());
  75 
  76         outputAnalyzer.shouldHaveExitValue(0);
  77 
  78         List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(
  79                 provoker.getMethodWithLockName(), outputAnalyzer.getOutput());
  80 
  81         Asserts.assertEQ(statistics.size(), 1,
  82                 "VM output should contain exactly one rtm locking statistics "
  83                 + "entry for method " + provoker.getMethodWithLockName());
  84 
  85         lock = statistics.get(0);
  86         Asserts.assertEQ(lock.getTotalLocks(), AbortProvoker.DEFAULT_ITERATIONS,
  87                 "Total lock count should be greater or equal to "
  88                 + AbortProvoker.DEFAULT_ITERATIONS);
  89     }
  90 
  91     public static void main(String args[]) throws Throwable {
  92         new TestUseRTMForInflatedLocks().runTestCases();
  93     }
  94 }