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GCArguments.java
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GCArguments.java
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/*
* Copyright (c) 2019, 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.
*/
package gc.arguments;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import jdk.test.lib.Platform;
import jdk.test.lib.process.ProcessTools;
/**
* Helper class for adding options to child processes that should be
* used by all of the argument tests in this package. The default
* options are added at the front, to allow them to be overridden by
* explicit options from any particular test.
*/
public final class GCArguments {
// Avoid excessive execution time.
static private void disableZapUnusedHeapArea(List<String> arguments) {
// Develop option, only available in debug builds.
if (Platform.isDebugBuild()) {
arguments.add("-XX:-ZapUnusedHeapArea");
}
}
// Avoid excessive execution time.
static private void disableVerifyBeforeExit(List<String> arguments) {
// Diagnostic option, default enabled in debug builds.
if (Platform.isDebugBuild()) {
arguments.add("-XX:-VerifyBeforeExit");
}
}
static private void addDefaults(List<String> arguments) {
disableZapUnusedHeapArea(arguments);
disableVerifyBeforeExit(arguments);
}
static private String[] withDefaults(String[] arguments) {
List<String> augmented = new ArrayList<String>();
addDefaults(augmented);
Collections.addAll(augmented, arguments);
return augmented.toArray(new String[augmented.size()]);
}
static public ProcessBuilder createJavaProcessBuilder(List<String> arguments) {
return createJavaProcessBuilder(arguments.toArray(String[]::new));
}
static public ProcessBuilder createJavaProcessBuilder(String... arguments) {
return ProcessTools.createJavaProcessBuilder(withDefaults(arguments));
}
static public ProcessBuilder createTestJvm(List<String> arguments) {
return createTestJvm(arguments.toArray(String[]::new));
}
static public ProcessBuilder createTestJvm(String... arguments) {
return ProcessTools.createTestJvm(withDefaults(arguments));
}
}