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/*
* Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/**
* @test
* @bug 8031320
* @summary Verify that RTMAbortThreshold option affects
* amount of aborts after which abort ratio is calculated.
* @library /test/lib /
* @modules java.base/jdk.internal.misc
* java.management
* @requires vm.flavor == "server" & !vm.emulatedClient & vm.rtm.cpu & vm.rtm.os
* @build sun.hotspot.WhiteBox
* @run driver ClassFileInstaller sun.hotspot.WhiteBox
* sun.hotspot.WhiteBox$WhiteBoxPermission
* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
* -XX:+WhiteBoxAPI
* compiler.rtm.locking.TestRTMAbortThreshold
*/
package compiler.rtm.locking;
import compiler.testlibrary.rtm.AbortProvoker;
import compiler.testlibrary.rtm.AbortType;
import compiler.testlibrary.rtm.RTMLockingStatistics;
import compiler.testlibrary.rtm.RTMTestBase;
import jdk.test.lib.Asserts;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.cli.CommandLineOptionTest;
import java.util.List;
/**
* Test verifies that on RTMAbortThreshold option actually affects how soon
* method will be deoptimized on high abort ratio.
*/
public class TestRTMAbortThreshold {
protected void runTestCases() throws Throwable {
verifyAbortThreshold(false, 1);
verifyAbortThreshold(false, 10);
verifyAbortThreshold(false, 1000);
verifyAbortThreshold(true, 1);
verifyAbortThreshold(true, 10);
verifyAbortThreshold(true, 1000);
}
private void verifyAbortThreshold(boolean useStackLock,
long abortThreshold) throws Throwable {
AbortProvoker provoker = AbortType.XABORT.provoker();
OutputAnalyzer outputAnalyzer = RTMTestBase.executeRTMTest(
provoker,
"-XX:+UseRTMDeopt",
"-XX:RTMAbortRatio=0",
CommandLineOptionTest.prepareNumericFlag("RTMAbortThreshold",
abortThreshold),
CommandLineOptionTest.prepareBooleanFlag("UseRTMForStackLocks",
useStackLock),
"-XX:RTMTotalCountIncrRate=1",
"-XX:+PrintPreciseRTMLockingStatistics",
AbortProvoker.class.getName(),
AbortType.XABORT.toString(),
Boolean.toString(!useStackLock));
outputAnalyzer.shouldHaveExitValue(0);
List<RTMLockingStatistics> statistics = RTMLockingStatistics.fromString(
provoker.getMethodWithLockName(), outputAnalyzer.getOutput());
Asserts.assertEQ(statistics.size(), 1, "VM output should contain "
+ "exactly one RTM locking statistics entry for method "
+ provoker.getMethodWithLockName());
Asserts.assertEQ(statistics.get(0).getTotalLocks(), abortThreshold,
String.format("Expected that method with rtm lock elision was"
+ " deoptimized after %d lock attempts",
abortThreshold));
}
public static void main(String args[]) throws Throwable {
new TestRTMAbortThreshold().runTestCases();
}
}
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