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 stack locks.
  29  * @library /testlibrary /test/lib /
  30  * @modules java.base/jdk.internal.misc
  31  *          java.management
  32  * @build TestUseRTMForStackLocks
  33  * @run driver ClassFileInstaller sun.hotspot.WhiteBox
  34  *                                sun.hotspot.WhiteBox$WhiteBoxPermission
  35  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  36  *                   -XX:+WhiteBoxAPI TestUseRTMForStackLocks
  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 compiler.testlibrary.rtm.*;
  45 import compiler.testlibrary.rtm.predicate.SupportedCPU;
  46 import compiler.testlibrary.rtm.predicate.SupportedVM;
  47 
  48 /**
  49  * Test verifies that RTM-based lock elision could be used for stack locks
  50  * by calling compiled method that use RTM-based lock elision and using
  51  * stack 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 TestUseRTMForStackLocks extends CommandLineOptionTest {
  59     private static final boolean INFLATE_MONITOR = false;
  60 
  61     private TestUseRTMForStackLocks() {
  62         super(new AndPredicate(new SupportedCPU(), new SupportedVM()));
  63     }
  64 
  65     @Override
  66     protected void runTestCases() throws Throwable {
  67         AbortProvoker provoker = AbortType.XABORT.provoker();
  68         RTMLockingStatistics lock;
  69 
  70         OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
  71                 provoker,
  72                 "-XX:+UseRTMForStackLocks",
  73                 "-XX:RTMTotalCountIncrRate=1",
  74                 "-XX:RTMRetryCount=0",
  75                 "-XX:+PrintPreciseRTMLockingStatistics",
  76                 AbortProvoker.class.getName(),
  77                 AbortType.XABORT.toString(),
  78                 Boolean.toString(TestUseRTMForStackLocks.INFLATE_MONITOR));
  79 
  80         outputAnalyzer.shouldHaveExitValue(0);
  81 
  82         List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(
  83                 provoker.getMethodWithLockName(), outputAnalyzer.getOutput());
  84 
  85         Asserts.assertEQ(statistics.size(), 1,
  86                 "VM output should contain exactly one rtm locking statistics "
  87                 + "entry for method " + provoker.getMethodWithLockName());
  88 
  89         lock = statistics.get(0);
  90         Asserts.assertEQ(lock.getTotalLocks(), AbortProvoker.DEFAULT_ITERATIONS,
  91                 "Total locks count should be greater or equal to "
  92                 + AbortProvoker.DEFAULT_ITERATIONS);
  93     }
  94 
  95     public static void main(String args[]) throws Throwable {
  96         new TestUseRTMForStackLocks().test();
  97     }
  98 }