TestRTMDeoptOnHighAbortRatio.java revision 11707:ad7af1afda7a 
1/*
2 * Copyright (c) 2014, 2015, 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 on high abort ratio method will be recompiled
29 *          without rtm locking.
30 * @library /testlibrary /test/lib /
31 * @modules java.base/jdk.internal.misc
32 *          java.management
33 * @build compiler.rtm.locking.TestRTMDeoptOnHighAbortRatio
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.TestRTMDeoptOnHighAbortRatio
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 compiler.testlibrary.rtm.predicate.SupportedCPU;
48import compiler.testlibrary.rtm.predicate.SupportedVM;
49import jdk.test.lib.Asserts;
50import jdk.test.lib.OutputAnalyzer;
51import jdk.test.lib.cli.CommandLineOptionTest;
52import jdk.test.lib.cli.predicate.AndPredicate;
53
54import java.util.List;
55
56/**
57 * Test verifies that on high abort ratio method wil be deoptimized with
58 * <i>rtm_state_change</i> reason and after that RTM-based lock elision will not
59 * be used for that method.
60 * This test make asserts on total locks count done by compiled method,
61 * so in order to avoid issue with retriable locks -XX:RTMRetryCount=0 is used.
62 * For more details on that issue see {@link TestUseRTMAfterLockInflation}.
63 */
64public class TestRTMDeoptOnHighAbortRatio extends CommandLineOptionTest {
65    private static final long ABORT_THRESHOLD
66            = AbortProvoker.DEFAULT_ITERATIONS / 2L;
67
68    private TestRTMDeoptOnHighAbortRatio() {
69        super(new AndPredicate(new SupportedCPU(), new SupportedVM()));
70    }
71
72    @Override
73    protected void runTestCases() throws Throwable {
74        verifyDeopt(false);
75        verifyDeopt(true);
76    }
77
78    private void verifyDeopt(boolean useStackLock) throws Throwable {
79        AbortProvoker provoker = AbortType.XABORT.provoker();
80        String logFileName = String.format("rtm_deopt_%s_stack_lock.xml",
81                (useStackLock ? "use" : "no"));
82
83        OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
84                logFileName,
85                provoker,
86                "-XX:+UseRTMDeopt",
87                CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks",
88                        useStackLock),
89                "-XX:RTMRetryCount=0",
90                CommandLineOptionTest.prepareNumericFlag("RTMAbortThreshold",
91                        TestRTMDeoptOnHighAbortRatio.ABORT_THRESHOLD),
92                "-XX:RTMAbortRatio=100",
93                "-XX:CompileThreshold=1",
94                "-XX:RTMTotalCountIncrRate=1",
95                "-XX:+PrintPreciseRTMLockingStatistics",
96                AbortProvoker.class.getName(),
97                AbortType.XABORT.toString(),
98                Boolean.toString(!useStackLock)
99        );
100
101        outputAnalyzer.shouldHaveExitValue(0);
102
103        int firedTraps = RTMTestBase.firedRTMStateChangeTraps(logFileName);
104
105        Asserts.assertEQ(firedTraps, 1, "Expected to get only one "
106                + "deoptimization due to rtm state change");
107
108        List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(
109                provoker.getMethodWithLockName(), outputAnalyzer.getOutput());
110
111        Asserts.assertEQ(statistics.size(), 1, "VM output should contain "
112                + "exactly one RTM locking statistics entry for method "
113                + provoker.getMethodWithLockName());
114
115        Asserts.assertEQ(statistics.get(0).getTotalLocks(),
116                TestRTMDeoptOnHighAbortRatio.ABORT_THRESHOLD,
117                "After AbortThreshold was reached, method should be"
118                + " recompiled without rtm lock eliding.");
119    }
120
121    public static void main(String args[]) throws Throwable {
122        new TestRTMDeoptOnHighAbortRatio().test();
123    }
124}
125
126