117 lines
4.6 KiB
Java
117 lines
4.6 KiB
Java
/*
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* Copyright (c) 2014, 2022, 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 on high abort ratio method will be recompiled
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* without rtm locking.
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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 jdk.test.whitebox.WhiteBox
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* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
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* @run main/othervm/native -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
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* -XX:+WhiteBoxAPI
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* compiler.rtm.locking.TestRTMDeoptOnHighAbortRatio
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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 jdk.test.lib.cli.CommandLineOptionTest;
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import java.util.List;
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/**
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* Test verifies that on high abort ratio method wil be deoptimized with
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* <i>rtm_state_change</i> reason and after that RTM-based lock elision will not
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* be used for that method.
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* This test make asserts on total locks count done by compiled method,
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* so in order to avoid issue with retriable locks -XX:RTMRetryCount=0 is used.
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* For more details on that issue see {@link TestUseRTMAfterLockInflation}.
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*/
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public class TestRTMDeoptOnHighAbortRatio {
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private static final long ABORT_THRESHOLD
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= AbortProvoker.DEFAULT_ITERATIONS / 2L;
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protected void runTestCases() throws Throwable {
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verifyDeopt(false);
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verifyDeopt(true);
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}
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private void verifyDeopt(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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OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
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logFileName,
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provoker,
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"-XX:+UseRTMDeopt",
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CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks",
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useStackLock),
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"-XX:RTMRetryCount=0",
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CommandLineOptionTest.prepareNumericFlag("RTMAbortThreshold",
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TestRTMDeoptOnHighAbortRatio.ABORT_THRESHOLD),
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"-XX:RTMAbortRatio=100",
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"-XX:CompileThreshold=1",
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"-XX:RTMTotalCountIncrRate=1",
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"-XX:+PrintPreciseRTMLockingStatistics",
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AbortProvoker.class.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, 1, "Expected to get only one "
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+ "deoptimization due to rtm state change");
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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, "VM output should contain "
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+ "exactly one RTM locking statistics entry for method "
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+ provoker.getMethodWithLockName());
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Asserts.assertEQ(statistics.get(0).getTotalLocks(),
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TestRTMDeoptOnHighAbortRatio.ABORT_THRESHOLD,
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"After AbortThreshold was reached, method should be"
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+ " recompiled without rtm lock eliding.");
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}
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public static void main(String args[]) throws Throwable {
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new TestRTMDeoptOnHighAbortRatio().runTestCases();
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}
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}
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