121 lines
4.8 KiB
Java
121 lines
4.8 KiB
Java
/*
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* Copyright (c) 2014, 2019, 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 UseRTMLockEliding option could be applied to
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* specified method and that such method will not be deoptimized
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* on high abort ratio.
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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.rtm.cpu & vm.rtm.compiler
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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/native -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
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* -XX:+WhiteBoxAPI
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* compiler.rtm.method_options.TestUseRTMLockElidingOption
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*/
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package compiler.rtm.method_options;
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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 jdk.test.lib.cli.CommandLineOptionTest;
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import java.util.List;
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/**
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* Test verifies that method tagged with option <i>UseRTMLockElidingOption</i>
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* will use RTM-based lock elision, but will be never deoptimized with
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* <i>rtm_state_change reason</i>.
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* Test invokes compiled method and checks that no deoptimization with
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* <i>rtm_state_change</i> reason had happened and that that VM output
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* contains RTM locking statistics for compiled method and that total locks
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* count equals to method's invocations.
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* Since last assert is pretty strict, test uses -XX:RTMRetryCount=0 in order
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* to avoid issue with retriable aborts described in
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* {@link TestUseRTMAfterLockInflation}.
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*/
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public class TestUseRTMLockElidingOption {
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public void runTestCases() throws Throwable {
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verifyOption(false);
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verifyOption(true);
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}
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public void verifyOption(boolean useStackLock) throws Throwable {
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AbortProvoker provoker = AbortType.XABORT.provoker();
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String logFileName = String.format("rtm_deopt_%s_stack_lock.xml",
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(useStackLock ? "use" : "no"));
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String methodOption = String.format("-XX:CompileCommand=option," +
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"%s,UseRTMLockEliding", provoker.getMethodWithLockName());
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OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
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logFileName,
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provoker,
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CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks",
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useStackLock),
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methodOption,
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"-XX:RTMTotalCountIncrRate=1",
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"-XX:RTMRetryCount=0",
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"-XX:+UseRTMDeopt",
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"-XX:+PrintPreciseRTMLockingStatistics",
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provoker.getClass().getName(),
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AbortType.XABORT.toString(),
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Boolean.toString(!useStackLock)
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);
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outputAnalyzer.shouldHaveExitValue(0);
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int firedTraps = RTMTestBase.firedRTMStateChangeTraps(logFileName);
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Asserts.assertEQ(firedTraps, 0,
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"Method deoptimization with rtm_state_change is unexpected");
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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 "
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+ "statistics entry for method "
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+ provoker.getMethodWithLockName());
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RTMLockingStatistics lock = statistics.get(0);
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Asserts.assertEQ(lock.getTotalLocks(), AbortProvoker.DEFAULT_ITERATIONS,
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"Expected to get total locks count equal to total amount of "
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+ "lock attempts.");
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}
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public static void main(String args[]) throws Throwable {
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new TestUseRTMLockElidingOption().runTestCases();
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}
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}
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