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 NoRTMLockEliding option could be applied to
  29  *          specified method and that such method will not use rtm.
  30  * @library /testlibrary /test/lib /compiler/testlibrary
  31  * @modules java.base/sun.misc
  32  *          java.management
  33  * @build TestNoRTMLockElidingOption
  34  * @run main ClassFileInstaller sun.hotspot.WhiteBox
  35  *                              sun.hotspot.WhiteBox$WhiteBoxPermission
  36  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  37  *                   -XX:+WhiteBoxAPI TestNoRTMLockElidingOption
  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 method tagged with option <i>NoRTMLockElidingOption</i>
  50  * will not use RTM-based lock elision.
  51  * Test invokes compiled method and checks that no deoptimization with
  52  * <i>rtm_state_change</i> reason had happened and that that VM output
  53  * does not contain RTM locking statistics for compiled method.
  54  */
  55 public class TestNoRTMLockElidingOption extends CommandLineOptionTest {
  56     private TestNoRTMLockElidingOption() {
  57         super(new AndPredicate(new SupportedCPU(), new SupportedVM()));
  58     }
  59 
  60     @Override
  61     public void runTestCases() throws Throwable {
  62         verifyOption(false);
  63         verifyOption(true);
  64     }
  65 
  66     public void verifyOption(boolean useStackLock) throws Throwable {
  67         AbortProvoker provoker = AbortType.XABORT.provoker();
  68         String logFileName = String.format("rtm_deopt_%s_stack_lock.xml",
  69                 (useStackLock ? "use" : "no"));
  70         String methodOption = String.format("-XX:CompileCommand=option," +
  71                 "%s,NoRTMLockEliding", provoker.getMethodWithLockName());
  72 
  73         OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
  74                 logFileName,
  75                 provoker,
  76                 CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks",
  77                         useStackLock),
  78                 methodOption,
  79                 "-XX:RTMTotalCountIncrRate=1",
  80                 "-XX:+UseRTMDeopt",
  81                 "-XX:+PrintPreciseRTMLockingStatistics",
  82                 AbortProvoker.class.getName(),
  83                 AbortType.XABORT.toString(),
  84                 Boolean.toString(!useStackLock)
  85         );
  86 
  87         outputAnalyzer.shouldHaveExitValue(0);
  88 
  89         int firedTraps = RTMTestBase.firedRTMStateChangeTraps(logFileName);
  90 
  91         Asserts.assertEQ(firedTraps, 0,
  92                 "No deoptimizations with rtm_state_change reason are expected");
  93 
  94         List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(
  95                 provoker.getMethodWithLockName(), outputAnalyzer.getOutput());
  96 
  97         Asserts.assertEQ(statistics.size(), 0,
  98                 "VM output should not contain RTM locking statistics entries "
  99                 + "for method " + provoker.getMethodWithLockName());
 100     }
 101 
 102     public static void main(String args[]) throws Throwable {
 103         new TestNoRTMLockElidingOption().test();
 104     }
 105 }