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 /
  31  * @modules java.base/jdk.internal.misc
  32  *          java.management
  33  * @build compiler.rtm.method_options.TestNoRTMLockElidingOption
  34  * @run driver ClassFileInstaller sun.hotspot.WhiteBox
  35  *                                sun.hotspot.WhiteBox$WhiteBoxPermission
  36  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  37  *                   -XX:+WhiteBoxAPI
  38  *                   compiler.rtm.method_options.TestNoRTMLockElidingOption
  39  */
  40 
  41 package compiler.rtm.method_options;
  42 
  43 import compiler.testlibrary.rtm.AbortProvoker;
  44 import compiler.testlibrary.rtm.AbortType;
  45 import compiler.testlibrary.rtm.RTMLockingStatistics;
  46 import compiler.testlibrary.rtm.RTMTestBase;
  47 import compiler.testlibrary.rtm.predicate.SupportedCPU;
  48 import compiler.testlibrary.rtm.predicate.SupportedVM;
  49 import jdk.test.lib.Asserts;
  50 import jdk.test.lib.OutputAnalyzer;
  51 import jdk.test.lib.cli.CommandLineOptionTest;
  52 import jdk.test.lib.cli.predicate.AndPredicate;
  53 
  54 import java.util.List;
  55 
  56 /**
  57  * Test verifies that method tagged with option <i>NoRTMLockElidingOption</i>
  58  * will not use RTM-based lock elision.
  59  * Test invokes compiled method and checks that no deoptimization with
  60  * <i>rtm_state_change</i> reason had happened and that that VM output
  61  * does not contain RTM locking statistics for compiled method.
  62  */
  63 public class TestNoRTMLockElidingOption extends CommandLineOptionTest {
  64     private TestNoRTMLockElidingOption() {
  65         super(new AndPredicate(new SupportedCPU(), new SupportedVM()));
  66     }
  67 
  68     @Override
  69     public void runTestCases() throws Throwable {
  70         verifyOption(false);
  71         verifyOption(true);
  72     }
  73 
  74     public void verifyOption(boolean useStackLock) throws Throwable {
  75         AbortProvoker provoker = AbortType.XABORT.provoker();
  76         String logFileName = String.format("rtm_deopt_%s_stack_lock.xml",
  77                 (useStackLock ? "use" : "no"));
  78         String methodOption = String.format("-XX:CompileCommand=option," +
  79                 "%s,NoRTMLockEliding", provoker.getMethodWithLockName());
  80 
  81         OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
  82                 logFileName,
  83                 provoker,
  84                 CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks",
  85                         useStackLock),
  86                 methodOption,
  87                 "-XX:RTMTotalCountIncrRate=1",
  88                 "-XX:+UseRTMDeopt",
  89                 "-XX:+PrintPreciseRTMLockingStatistics",
  90                 AbortProvoker.class.getName(),
  91                 AbortType.XABORT.toString(),
  92                 Boolean.toString(!useStackLock)
  93         );
  94 
  95         outputAnalyzer.shouldHaveExitValue(0);
  96 
  97         int firedTraps = RTMTestBase.firedRTMStateChangeTraps(logFileName);
  98 
  99         Asserts.assertEQ(firedTraps, 0,
 100                 "No deoptimizations with rtm_state_change reason are expected");
 101 
 102         List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(
 103                 provoker.getMethodWithLockName(), outputAnalyzer.getOutput());
 104 
 105         Asserts.assertEQ(statistics.size(), 0,
 106                 "VM output should not contain RTM locking statistics entries "
 107                 + "for method " + provoker.getMethodWithLockName());
 108     }
 109 
 110     public static void main(String args[]) throws Throwable {
 111         new TestNoRTMLockElidingOption().test();
 112     }
 113 }