/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (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.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef _LOG4CXX_HELPERS_THREAD_SPECIFIC_DATA_H
#define _LOG4CXX_HELPERS_THREAD_SPECIFIC_DATA_H

#include <log4cxx/ndc.h>
#include <log4cxx/mdc.h>


namespace log4cxx
{
        namespace helpers
        {
                /**
                  *   This class contains all the thread-specific
                  *   data in use by log4cxx.
                  */
                class LOG4CXX_EXPORT ThreadSpecificData
                {
                public:
                        ThreadSpecificData();
                        ~ThreadSpecificData();

                        /**
                         *  Gets current thread specific data.
                         *  @return thread specific data, may be null.
                         */
                        static ThreadSpecificData* getCurrentData();
                        /**
                         *  Release this ThreadSpecficData if empty.
                         */
                        void recycle();

                        static void put(const LogString& key, const LogString& val);
                        static void push(const LogString& val);
                        static void inherit(const log4cxx::NDC::Stack& stack);

                        log4cxx::NDC::Stack& getStack();
                        log4cxx::MDC::Map& getMap();


                private:
                        static ThreadSpecificData& getDataNoThreads();
                        static ThreadSpecificData* createCurrentData();
                        log4cxx::NDC::Stack ndcStack;
                        log4cxx::MDC::Map mdcMap;
                };

        }  // namespace helpers
} // namespace log4cxx

#endif