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**** 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 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) 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 of those above. If you wish to allow use of your version of this file only under the terms of either the GPL or the LGPL, and not to allow others to use your version of this file under the terms of the CPL, indicate your decision by deleting the provisions above and replace them with the notice and other provisions required by the GPL or the LGPL. If you do not delete the provisions above, a recipient may use your version of this file under the terms of any one of the CPL, the GPL or the LGPL. **** END LICENSE BLOCK *****
package org.jruby.embed.internal;
Concurrent type local context provider. Ruby runtime returned from the getRuntime() method is a classloader-global runtime. While variables (except global variables) and constants are thread local.

Yoko Harada <>
            new ThreadLocal<LocalContext>() {
                public LocalContext initialValue() {
                    return getInstance();
                public void remove() {
                    LocalContext localContext = get();
    public ConcurrentLocalContextProvider(LocalVariableBehavior behaviorboolean lazy) {
        // To save startup time, Ruby runtime instantiation should be delayed as mush as possible
        // so, don't create runtime here.
        if (Ruby.isGlobalRuntimeReady())  = Ruby.getGlobalRuntime().getInstanceConfig();
        else  = new RubyInstanceConfig();
        this. = behavior;
        this. = lazy;
    public Ruby getRuntime() {
        if (!Ruby.isGlobalRuntimeReady()) {
            return Ruby.newInstance();
        return Ruby.getGlobalRuntime();
        if (Ruby.isGlobalRuntimeReady()) return Ruby.getGlobalRuntime().getInstanceConfig();
        else return ;
    public BiVariableMap getVarMap() {
        return .get().getVarMap(this);
    public Map getAttributeMap() {
        return .get().getAttributeMap();
    public boolean isRuntimeInitialized() {
        return Ruby.isGlobalRuntimeReady();
    public void terminate() {
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