1/*
2 * Copyright (c) 2014, 2016, 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.
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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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.flavor == "server" & !vm.emulatedClient & vm.rtm.cpu & vm.rtm.os
32 * @build sun.hotspot.WhiteBox
33 * @run driver ClassFileInstaller sun.hotspot.WhiteBox
34 *                                sun.hotspot.WhiteBox$WhiteBoxPermission
35 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
36 *                   -XX:+WhiteBoxAPI compiler.rtm.locking.TestUseRTMForInflatedLocks
37 */
38
39package compiler.rtm.locking;
40
41import compiler.testlibrary.rtm.AbortProvoker;
42import compiler.testlibrary.rtm.AbortType;
43import compiler.testlibrary.rtm.RTMLockingStatistics;
44import compiler.testlibrary.rtm.RTMTestBase;
45import jdk.test.lib.Asserts;
46import jdk.test.lib.process.OutputAnalyzer;
47
48import java.util.List;
49
50/**
51 * Test verifies that RTM-based lock elision could be used for inflated locks
52 * by calling compiled method that use RTM-based lock elision and using
53 * manually inflated lock.
54 * Compiled method invoked {@code AbortProvoker.DEFAULT_ITERATIONS} times,
55 * so total locks count should be the same.
56 * This test could also be affected by retriable aborts, so -XX:RTMRetryCount=0
57 * is used. For more information abort that issue see
58 * {@link TestUseRTMAfterLockInflation}.
59 */
60public class TestUseRTMForInflatedLocks {
61
62    protected void runTestCases() throws Throwable {
63        AbortProvoker provoker = AbortType.XABORT.provoker();
64        RTMLockingStatistics lock;
65
66        OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
67                provoker,
68                "-XX:-UseRTMForStackLocks",
69                "-XX:RTMTotalCountIncrRate=1",
70                "-XX:RTMRetryCount=0",
71                "-XX:+PrintPreciseRTMLockingStatistics",
72                AbortProvoker.class.getName(),
73                AbortType.XABORT.toString());
74
75        outputAnalyzer.shouldHaveExitValue(0);
76
77        List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(
78                provoker.getMethodWithLockName(), outputAnalyzer.getOutput());
79
80        Asserts.assertEQ(statistics.size(), 1,
81                "VM output should contain exactly one rtm locking statistics "
82                + "entry for method " + provoker.getMethodWithLockName());
83
84        lock = statistics.get(0);
85        Asserts.assertEQ(lock.getTotalLocks(), AbortProvoker.DEFAULT_ITERATIONS,
86                "Total lock count should be greater or equal to "
87                + AbortProvoker.DEFAULT_ITERATIONS);
88    }
89
90    public static void main(String args[]) throws Throwable {
91        new TestUseRTMForInflatedLocks().runTestCases();
92    }
93}
94