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.
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 * @test
26 * @bug 8031320
27 * @summary Verify that RTMAbortThreshold option affects
28 *          amount of aborts after which abort ratio is calculated.
29 * @library /test/lib /
30 * @modules java.base/jdk.internal.misc
31 *          java.management
32 * @requires vm.flavor == "server" & !vm.emulatedClient & vm.rtm.cpu & vm.rtm.os
33 * @build sun.hotspot.WhiteBox
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.locking.TestRTMAbortThreshold
39 */
40
41package compiler.rtm.locking;
42
43import compiler.testlibrary.rtm.AbortProvoker;
44import compiler.testlibrary.rtm.AbortType;
45import compiler.testlibrary.rtm.RTMLockingStatistics;
46import compiler.testlibrary.rtm.RTMTestBase;
47import jdk.test.lib.Asserts;
48import jdk.test.lib.process.OutputAnalyzer;
49import jdk.test.lib.cli.CommandLineOptionTest;
50
51import java.util.List;
52
53/**
54 * Test verifies that on RTMAbortThreshold option actually affects how soon
55 * method will be deoptimized on high abort ratio.
56 */
57public class TestRTMAbortThreshold {
58
59    protected void runTestCases() throws Throwable {
60        verifyAbortThreshold(false, 1);
61        verifyAbortThreshold(false, 10);
62        verifyAbortThreshold(false, 1000);
63
64        verifyAbortThreshold(true, 1);
65        verifyAbortThreshold(true, 10);
66        verifyAbortThreshold(true, 1000);
67    }
68
69    private void verifyAbortThreshold(boolean useStackLock,
70            long abortThreshold) throws Throwable {
71        AbortProvoker provoker = AbortType.XABORT.provoker();
72
73        OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
74                provoker,
75                "-XX:+UseRTMDeopt",
76                "-XX:RTMAbortRatio=0",
77                CommandLineOptionTest.prepareNumericFlag("RTMAbortThreshold",
78                        abortThreshold),
79                CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks",
80                        useStackLock),
81                "-XX:RTMTotalCountIncrRate=1",
82                "-XX:+PrintPreciseRTMLockingStatistics",
83                AbortProvoker.class.getName(),
84                AbortType.XABORT.toString(),
85                Boolean.toString(!useStackLock));
86
87        outputAnalyzer.shouldHaveExitValue(0);
88
89        List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(
90                provoker.getMethodWithLockName(), outputAnalyzer.getOutput());
91
92        Asserts.assertEQ(statistics.size(), 1, "VM output should contain "
93                + "exactly one RTM locking statistics entry for method "
94                + provoker.getMethodWithLockName());
95
96        Asserts.assertEQ(statistics.get(0).getTotalLocks(), abortThreshold,
97                String.format("Expected that method with rtm lock elision was"
98                        + " deoptimized after %d lock attempts",
99                        abortThreshold));
100    }
101
102    public static void main(String args[]) throws Throwable {
103         new TestRTMAbortThreshold().runTestCases();
104    }
105}
106
107