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annotate test/compiler/rtm/method_options/TestUseRTMLockElidingOption.java @ 19153:28b07d300f57

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author Roland Schatz <roland.schatz@oracle.com>
date Thu, 05 Feb 2015 14:11:59 +0100
parents ba8268c23fa2
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1 /*
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2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 /**
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26 * @test
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27 * @bug 8031320
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28 * @summary Verify that UseRTMLockEliding option could be applied to
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29 * specified method and that such method will not be deoptimized
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30 * on high abort ratio.
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31 * @library /testlibrary /testlibrary/whitebox /compiler/testlibrary
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32 * @build TestUseRTMLockElidingOption
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33 * @run main ClassFileInstaller sun.hotspot.WhiteBox
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34 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
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35 * -XX:+WhiteBoxAPI TestUseRTMLockElidingOption
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36 */
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37
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38 import java.util.List;
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39 import com.oracle.java.testlibrary.*;
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40 import com.oracle.java.testlibrary.cli.CommandLineOptionTest;
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41 import com.oracle.java.testlibrary.cli.predicate.AndPredicate;
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42 import rtm.*;
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43 import rtm.predicate.SupportedCPU;
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44 import rtm.predicate.SupportedVM;
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45
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46 /**
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47 * Test verifies that method tagged with option <i>UseRTMLockElidingOption</i>
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48 * will use RTM-based lock elision, but will be never deoptimized with
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49 * <i>rtm_state_change reason</i>.
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50 * Test invokes compiled method and checks that no deoptimization with
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51 * <i>rtm_state_change</i> reason had happened and that that VM output
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52 * contains RTM locking statistics for compiled method and that total locks
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53 * count equals to method's invocations.
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54 * Since last assert is pretty strict, test uses -XX:RTMRetryCount=0 in order
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55 * to avoid issue with retriable aborts described in
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56 * {@link TestUseRTMAfterLockInflation}.
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57 */
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58 public class TestUseRTMLockElidingOption extends CommandLineOptionTest {
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59 private TestUseRTMLockElidingOption() {
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60 super(new AndPredicate(new SupportedCPU(), new SupportedVM()));
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61 }
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62
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63 @Override
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64 public void runTestCases() throws Throwable {
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65 verifyOption(false);
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66 verifyOption(true);
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67 }
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68
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69 public void verifyOption(boolean useStackLock) throws Throwable {
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70 AbortProvoker provoker = AbortType.XABORT.provoker();
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71 String logFileName = String.format("rtm_deopt_%s_stack_lock.xml",
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72 (useStackLock ? "use" : "no"));
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73 String methodOption = String.format("-XX:CompileCommand=option," +
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74 "%s,UseRTMLockEliding", provoker.getMethodWithLockName());
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75
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76 OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
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77 logFileName,
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78 provoker,
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79 CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks",
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80 useStackLock),
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81 methodOption,
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82 "-XX:RTMTotalCountIncrRate=1",
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83 "-XX:RTMRetryCount=0",
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84 "-XX:+UseRTMDeopt",
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85 "-XX:+PrintPreciseRTMLockingStatistics",
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86 provoker.getClass().getName(),
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87 AbortType.XABORT.toString(),
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88 Boolean.toString(!useStackLock)
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89 );
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90
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91 outputAnalyzer.shouldHaveExitValue(0);
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92
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93 int firedTraps = RTMTestBase.firedRTMStateChangeTraps(logFileName);
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94
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95 Asserts.assertEQ(firedTraps, 0,
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96 "Method deoptimization with rtm_state_change is unexpected");
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97
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98 List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(
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99 provoker.getMethodWithLockName(), outputAnalyzer.getOutput());
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100
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101 Asserts.assertEQ(statistics.size(), 1,
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102 "VM output should contain exactly one RTM locking "
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103 + "statistics entry for method "
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104 + provoker.getMethodWithLockName());
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105
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106 RTMLockingStatistics lock = statistics.get(0);
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107
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108 Asserts.assertEQ(lock.getTotalLocks(), AbortProvoker.DEFAULT_ITERATIONS,
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109 "Expected to get total locks count equal to total amount of "
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110 + "lock attempts.");
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111 }
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112
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113 public static void main(String args[]) throws Throwable {
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114 new TestUseRTMLockElidingOption().test();
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115 }
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116 }