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comparison test/compiler/rtm/locking/TestRTMSpinLoopCount.java @ 17873:ba8268c23fa2

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8037860: Add tests to cover Intel RTM instructions support Reviewed-by: kvn, iignatyev Contributed-by: filipp.zhinkin@oracle.com
author iignatyev
date Fri, 11 Apr 2014 00:35:23 +0400
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17872:100f2b109432 17873:ba8268c23fa2
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 RTMSpinLoopCount affects time spent
29 * between locking attempts.
30 * @library /testlibrary /testlibrary/whitebox /compiler/testlibrary
31 * @build TestRTMSpinLoopCount
32 * @run main ClassFileInstaller sun.hotspot.WhiteBox
33 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
34 * -XX:+WhiteBoxAPI TestRTMSpinLoopCount
35 */
36
37 import java.util.List;
38 import com.oracle.java.testlibrary.*;
39 import com.oracle.java.testlibrary.cli.CommandLineOptionTest;
40 import com.oracle.java.testlibrary.cli.predicate.AndPredicate;
41 import rtm.*;
42 import rtm.predicate.SupportedCPU;
43 import rtm.predicate.SupportedVM;
44
45 /**
46 * Test verifies that RTMSpinLoopCount increase time spent between retries
47 * by comparing amount of retries done with different RTMSpinLoopCount's values.
48 */
49 public class TestRTMSpinLoopCount extends CommandLineOptionTest {
50 private static final int LOCKING_TIME = 1000;
51 private static final int RTM_RETRY_COUNT = 1000;
52 private static final boolean INFLATE_MONITOR = true;
53 private static final long MAX_ABORTS = RTM_RETRY_COUNT + 1L;
54 private static final int[] SPIN_LOOP_COUNTS
55 = new int[] { 0, 100, 1_000, 1_000_000, 10_000_000 };
56
57 private TestRTMSpinLoopCount() {
58 super(new AndPredicate(new SupportedVM(), new SupportedCPU()));
59 }
60
61 @Override
62 protected void runTestCases() throws Throwable {
63 long[] aborts = new long[TestRTMSpinLoopCount.SPIN_LOOP_COUNTS.length];
64 for (int i = 0; i < TestRTMSpinLoopCount.SPIN_LOOP_COUNTS.length; i++) {
65 aborts[i] = getAbortsCountOnLockBusy(
66 TestRTMSpinLoopCount.SPIN_LOOP_COUNTS[i]);
67 }
68
69 for (int i = 1; i < aborts.length; i++) {
70 Asserts.assertLTE(aborts[i], aborts[i - 1], "Increased spin loop "
71 + "count should not increase retries count.");
72 }
73 }
74
75 private long getAbortsCountOnLockBusy(int spinLoopCount) throws Throwable {
76 CompilableTest test = new BusyLock();
77
78 OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
79 test,
80 CommandLineOptionTest.prepareNumericFlag("RTMRetryCount",
81 TestRTMSpinLoopCount.RTM_RETRY_COUNT),
82 CommandLineOptionTest.prepareNumericFlag("RTMSpinLoopCount",
83 spinLoopCount),
84 "-XX:-UseRTMXendForLockBusy",
85 "-XX:RTMTotalCountIncrRate=1",
86 "-XX:+PrintPreciseRTMLockingStatistics",
87 BusyLock.class.getName(),
88 Boolean.toString(TestRTMSpinLoopCount.INFLATE_MONITOR),
89 Integer.toString(TestRTMSpinLoopCount.LOCKING_TIME)
90 );
91
92 outputAnalyzer.shouldHaveExitValue(0);
93
94 List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(
95 test.getMethodWithLockName(), outputAnalyzer.getOutput());
96
97 Asserts.assertEQ(statistics.size(), 1,
98 "VM output should contain exactly one entry for method "
99 + test.getMethodWithLockName());
100
101 RTMLockingStatistics lock = statistics.get(0);
102
103 Asserts.assertLTE(lock.getTotalAborts(),
104 TestRTMSpinLoopCount.MAX_ABORTS, String.format("Total aborts "
105 + "count (%d) should be less or equal to %d",
106 lock.getTotalAborts(),
107 TestRTMSpinLoopCount.MAX_ABORTS));
108
109 return lock.getTotalAborts();
110 }
111
112 public static void main(String args[]) throws Throwable {
113 new TestRTMSpinLoopCount().test();
114 }
115 }