TestRTMRetryCount.java revision 6865:d5d005f1d973 
1/*
2 * Copyright (c) 2014, 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 RTMRetryCount affects actual amount of retries.
29 * @library /testlibrary /testlibrary/whitebox /compiler/testlibrary
30 * @build TestRTMRetryCount
31 * @run main ClassFileInstaller sun.hotspot.WhiteBox
32 *                              sun.hotspot.WhiteBox$WhiteBoxPermission
33 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
34 *                   -XX:+WhiteBoxAPI TestRTMRetryCount
35 */
36
37import java.util.List;
38
39import com.oracle.java.testlibrary.*;
40import com.oracle.java.testlibrary.cli.CommandLineOptionTest;
41import com.oracle.java.testlibrary.cli.predicate.AndPredicate;
42import rtm.*;
43import rtm.predicate.SupportedCPU;
44import rtm.predicate.SupportedVM;
45
46/**
47 * Test verifies that RTMRetryCount option actually affects amount of
48 * retries on lock busy.
49 */
50public class TestRTMRetryCount extends CommandLineOptionTest {
51    /**
52     * Time in ms, during which busy lock will be locked.
53     */
54    private static final int LOCKING_TIME = 5000;
55    private static final boolean INFLATE_MONITOR = true;
56
57    private TestRTMRetryCount() {
58        super(new AndPredicate(new SupportedCPU(), new SupportedVM()));
59    }
60
61    @Override
62    protected void runTestCases() throws Throwable {
63        verifyRTMRetryCount(0);
64        verifyRTMRetryCount(1);
65        verifyRTMRetryCount(5);
66        verifyRTMRetryCount(10);
67    }
68
69    private void verifyRTMRetryCount(int retryCount) throws Throwable {
70        CompilableTest busyLock = new BusyLock();
71        long expectedAborts = retryCount + 1L;
72
73        OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
74                busyLock,
75                "-XX:-UseRTMXendForLockBusy",
76                "-XX:RTMTotalCountIncrRate=1",
77                CommandLineOptionTest.prepareNumericFlag("RTMRetryCount",
78                        retryCount),
79                "-XX:RTMTotalCountIncrRate=1",
80                "-XX:+PrintPreciseRTMLockingStatistics",
81                BusyLock.class.getName(),
82                Boolean.toString(TestRTMRetryCount.INFLATE_MONITOR),
83                Integer.toString(TestRTMRetryCount.LOCKING_TIME)
84        );
85
86        outputAnalyzer.shouldHaveExitValue(0);
87
88        List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(
89                busyLock.getMethodWithLockName(), outputAnalyzer.getStdout());
90
91        Asserts.assertEQ(statistics.size(), 1, "VM output should contain "
92                + "exactly one rtm locking statistics entry for method "
93                + busyLock.getMethodWithLockName());
94
95        Asserts.assertEQ(statistics.get(0).getTotalAborts(), expectedAborts,
96                String.format("It is expected to get %d aborts",
97                        expectedAborts));
98    }
99
100    public static void main(String args[]) throws Throwable {
101        new TestRTMRetryCount().test();
102    }
103}
104