aprinitializer.h

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/*
 * 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_APRINITIALIZER_H
#define _LOG4CXX_HELPERS_APRINITIALIZER_H
 
#ifndef LOG4CXX
    #error "aprinitializer.h should only be included by log4cxx implementation"
#endif
 
#include <log4cxx/helpers/object.h>
#include <list>
#include <log4cxx/helpers/date.h>
 
extern "C" {
    typedef struct apr_thread_mutex_t apr_thread_mutex_t;
    typedef struct apr_threadkey_t apr_threadkey_t;
    struct apr_pool_t;
}
 
#include <mutex>
#include <functional>
 
namespace log4cxx
{
namespace helpers
{
class FileWatchdog;
 
class APRInitializer
{
    public:
        static log4cxx_time_t initialize();
        static apr_pool_t* getRootPool();
        static apr_threadkey_t* getTlsKey();
        static bool isDestructed;
 
        static void registerCleanup(FileWatchdog* watchdog);
        static void unregisterCleanup(FileWatchdog* watchdog);
        static void unregisterAll();
        template <class T> static void setUnique(const std::shared_ptr<T>& pObject)
        {
            getInstance().addObject(typeid(T).hash_code(), pObject);
        }
        template <class T> static std::shared_ptr<T> getOrAddUnique(std::function<ObjectPtr()> creator)
        {
            return cast<T>(getInstance().findOrAddObject(typeid(T).hash_code(), creator));
        }
 
 
    private: // Constructors
        APRInitializer();
        APRInitializer(const APRInitializer&) = delete;
        APRInitializer& operator=(const APRInitializer&) = delete;
    private: // Modifiers
        void addObject(size_t key, const ObjectPtr& pObject);
        const ObjectPtr& findOrAddObject(size_t key, std::function<ObjectPtr()> creator);
        void stopWatchDogs();
    private: // Attributes
        LOG4CXX_DECLARE_PRIVATE_MEMBER_PTR(APRInitializerPrivate, m_priv)
    private: // Class methods
        static APRInitializer& getInstance();
 
    public: // Destructor
        ~APRInitializer();
};
} // namespace helpers
} // namespace log4cxx
 
#endif //_LOG4CXX_HELPERS_APRINITIALIZER_H