hotspot虚拟机源码
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/*
* Copyright (c) 2014, 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 UseRTMDeopt option processing on CPUs without rtm support
* or on VMs without rtm locking support.
* @library /testlibrary /testlibrary/whitebox /compiler/testlibrary
* @build TestUseRTMDeoptOptionOnUnsupportedConfig
* @run main ClassFileInstaller sun.hotspot.WhiteBox
* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
* -XX:+WhiteBoxAPI TestUseRTMDeoptOptionOnUnsupportedConfig
*/
import com.oracle.java.testlibrary.cli.CommandLineOptionTest;
import com.oracle.java.testlibrary.cli.predicate.AndPredicate;
import com.oracle.java.testlibrary.cli.predicate.NotPredicate;
import rtm.predicate.SupportedCPU;
import rtm.predicate.SupportedVM;
public class TestUseRTMDeoptOptionOnUnsupportedConfig
extends RTMGenericCommandLineOptionTest {
private static final String DEFAULT_VALUE = "false";
private TestUseRTMDeoptOptionOnUnsupportedConfig() {
super(new NotPredicate(new AndPredicate(new SupportedCPU(),
new SupportedVM())),
"UseRTMDeopt", true, false,
TestUseRTMDeoptOptionOnUnsupportedConfig.DEFAULT_VALUE, "true");
}
@Override
protected void runX86SupportedVMTestCases() throws Throwable {
super.verifyJVMStartup();
// verify default value
CommandLineOptionTest.verifyOptionValueForSameVM(optionName,
defaultValue);
// verify that until RTMLocking is not used, value
// will be set to default false.
CommandLineOptionTest.verifyOptionValueForSameVM(optionName,
defaultValue, "-XX:+UseRTMDeopt");
}
public static void main(String args[]) throws Throwable {
new TestUseRTMDeoptOptionOnUnsupportedConfig().test();
}
}