94 lines
3.7 KiB
Java
94 lines
3.7 KiB
Java
/*
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* Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @bug 8031320
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* @summary Verify that rtm locking is used for inflated locks.
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* @library /test/lib /
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* @modules java.base/jdk.internal.misc
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* java.management
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* @requires vm.flavor == "server" & !vm.emulatedClient & vm.rtm.cpu & vm.rtm.os
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* @build sun.hotspot.WhiteBox
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* @run driver ClassFileInstaller sun.hotspot.WhiteBox
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* sun.hotspot.WhiteBox$WhiteBoxPermission
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* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
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* -XX:+WhiteBoxAPI compiler.rtm.locking.TestUseRTMForInflatedLocks
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*/
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package compiler.rtm.locking;
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import compiler.testlibrary.rtm.AbortProvoker;
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import compiler.testlibrary.rtm.AbortType;
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import compiler.testlibrary.rtm.RTMLockingStatistics;
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import compiler.testlibrary.rtm.RTMTestBase;
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import jdk.test.lib.Asserts;
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import jdk.test.lib.process.OutputAnalyzer;
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import java.util.List;
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/**
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* Test verifies that RTM-based lock elision could be used for inflated locks
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* by calling compiled method that use RTM-based lock elision and using
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* manually inflated lock.
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* Compiled method invoked {@code AbortProvoker.DEFAULT_ITERATIONS} times,
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* so total locks count should be the same.
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* This test could also be affected by retriable aborts, so -XX:RTMRetryCount=0
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* is used. For more information abort that issue see
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* {@link TestUseRTMAfterLockInflation}.
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*/
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public class TestUseRTMForInflatedLocks {
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protected void runTestCases() throws Throwable {
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AbortProvoker provoker = AbortType.XABORT.provoker();
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RTMLockingStatistics lock;
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OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
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provoker,
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"-XX:-UseRTMForStackLocks",
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"-XX:RTMTotalCountIncrRate=1",
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"-XX:RTMRetryCount=0",
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"-XX:+PrintPreciseRTMLockingStatistics",
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AbortProvoker.class.getName(),
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AbortType.XABORT.toString());
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outputAnalyzer.shouldHaveExitValue(0);
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List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(
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provoker.getMethodWithLockName(), outputAnalyzer.getOutput());
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Asserts.assertEQ(statistics.size(), 1,
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"VM output should contain exactly one rtm locking statistics "
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+ "entry for method " + provoker.getMethodWithLockName());
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lock = statistics.get(0);
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Asserts.assertEQ(lock.getTotalLocks(), AbortProvoker.DEFAULT_ITERATIONS,
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"Total lock count should be greater or equal to "
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+ AbortProvoker.DEFAULT_ITERATIONS);
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}
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public static void main(String args[]) throws Throwable {
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new TestUseRTMForInflatedLocks().runTestCases();
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}
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}
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