TestUseRTMForInflatedLocks.java revision 10551:b64432bae527 
1/*
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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23 */
24
25/**
26 * @test
27 * @bug 8031320
28 * @summary Verify that rtm locking is used for inflated locks.
29 * @library /testlibrary /test/lib /compiler/testlibrary
30 * @modules java.base/jdk.internal.misc
31 *          java.management
32 * @build TestUseRTMForInflatedLocks
33 * @run main ClassFileInstaller sun.hotspot.WhiteBox
34 *                              sun.hotspot.WhiteBox$WhiteBoxPermission
35 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
36 *                   -XX:+WhiteBoxAPI TestUseRTMForInflatedLocks
37 */
38
39import java.util.List;
40
41import jdk.test.lib.*;
42import jdk.test.lib.cli.CommandLineOptionTest;
43import jdk.test.lib.cli.predicate.AndPredicate;
44import rtm.*;
45import rtm.predicate.SupportedCPU;
46import rtm.predicate.SupportedVM;
47
48/**
49 * Test verifies that RTM-based lock elision could be used for inflated locks
50 * by calling compiled method that use RTM-based lock elision and using
51 * manually inflated lock.
52 * Compiled method invoked {@code AbortProvoker.DEFAULT_ITERATIONS} times,
53 * so total locks count should be the same.
54 * This test could also be affected by retriable aborts, so -XX:RTMRetryCount=0
55 * is used. For more information abort that issue see
56 * {@link TestUseRTMAfterLockInflation}.
57 */
58public class TestUseRTMForInflatedLocks extends CommandLineOptionTest {
59    private TestUseRTMForInflatedLocks() {
60        super(new AndPredicate(new SupportedCPU(), new SupportedVM()));
61    }
62
63    @Override
64    protected void runTestCases() throws Throwable {
65        AbortProvoker provoker = AbortType.XABORT.provoker();
66        RTMLockingStatistics lock;
67
68        OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
69                provoker,
70                "-XX:-UseRTMForStackLocks",
71                "-XX:RTMTotalCountIncrRate=1",
72                "-XX:RTMRetryCount=0",
73                "-XX:+PrintPreciseRTMLockingStatistics",
74                AbortProvoker.class.getName(),
75                AbortType.XABORT.toString());
76
77        outputAnalyzer.shouldHaveExitValue(0);
78
79        List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(
80                provoker.getMethodWithLockName(), outputAnalyzer.getOutput());
81
82        Asserts.assertEQ(statistics.size(), 1,
83                "VM output should contain exactly one rtm locking statistics "
84                + "entry for method " + provoker.getMethodWithLockName());
85
86        lock = statistics.get(0);
87        Asserts.assertEQ(lock.getTotalLocks(), AbortProvoker.DEFAULT_ITERATIONS,
88                "Total lock count should be greater or equal to "
89                + AbortProvoker.DEFAULT_ITERATIONS);
90    }
91
92    public static void main(String args[]) throws Throwable {
93        new TestUseRTMForInflatedLocks().test();
94    }
95}
96