org.jruby.embed.internal.LocalContext Maven / Gradle / Ivy
/**
* **** BEGIN LICENSE BLOCK *****
* Version: CPL 1.0/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Common Public
* License Version 1.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.eclipse.org/legal/cpl-v10.html
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* Copyright (C) 2009-2011 Yoko Harada
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
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*/
package org.jruby.embed.internal;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.HashMap;
import org.jruby.Ruby;
import org.jruby.RubyInstanceConfig;
import org.jruby.embed.AttributeName;
import org.jruby.embed.LocalVariableBehavior;
/**
*
* @author Yoko Harada
*/
public class LocalContext {
private RubyInstanceConfig config;
private LocalVariableBehavior behavior;
private boolean lazy;
Ruby runtime = null;
private BiVariableMap varMap = null; // singleton doesn't use this varMap.
private HashMap attribute = null;
boolean initialized = false;
public LocalContext(RubyInstanceConfig config, LocalVariableBehavior behavior, boolean lazy) {
initialize(config, behavior, lazy);
}
private void initialize(RubyInstanceConfig config, LocalVariableBehavior behavior, boolean lazy) {
this.config = config;
this.behavior = behavior;
this.lazy = lazy;
}
// This method is used only from ThreadLocalContextProvider.
// Other providers should instantialte runtime in their own way.
public Ruby getThreadSafeRuntime() {
if (runtime == null) {
// stopped loading java library (runtime.getLoadService().require("java");)
// during the intialization process.
runtime = Ruby.newInstance(config);
initialized = true;
}
return runtime;
}
// this method is used in ConcurrentContextProvider. concurrent model uses
// global runtime and thread local variable map. don't want to create
// local runtime
public BiVariableMap getVarMap(LocalContextProvider provider) {
if (varMap == null) {
varMap = new BiVariableMap(provider, lazy);
}
return varMap;
}
public LocalVariableBehavior getLocalVariableBehavior() {
return behavior;
}
public HashMap getAttributeMap() {
if (attribute == null) {
attribute = new HashMap();
attribute.put(AttributeName.READER, new InputStreamReader(System.in));
attribute.put(AttributeName.WRITER, new PrintWriter(System.out, true));
attribute.put(AttributeName.ERROR_WRITER, new PrintWriter(System.err, true));
}
return attribute;
}
public void remove() {
if (attribute == null) return;
attribute.clear();
varMap.clear();
}
}