CppCMS/base_cache.h

///////////////////////////////////////////////////////////////////////////////
//                                                                             
//  Copyright (C) 2008-2010  Artyom Beilis (Tonkikh) <artyomtnk@yahoo.com>     
//                                                                             
//  This program is free software: you can redistribute it and/or modify       
//  it under the terms of the GNU Lesser General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  (at your option) any later version.
//
//  This program 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 Lesser General Public License for more details.
//
//  You should have received a copy of the GNU Lesser General Public License
//  along with this program.  If not, see <http://www.gnu.org/licenses/>.
//
///////////////////////////////////////////////////////////////////////////////
#ifndef BASE_CACHE_H
#define BASE_CACHE_H

#include <string>
#include <set>
#include "defs.h"
#include "intrusive_ptr.h"
#include "cstdint.h"

namespace cppcms {
	namespace impl {
		class base_cache {
		public:
			inline bool fetch(std::string const &key,std::string &a,std::set<std::string> *tags=0) 
			{
				return fetch(key,&a,tags);
			}
			virtual bool fetch(std::string const &key,std::string *a=0,std::set<std::string> *tags=0,time_t *timeout_out=0,uint64_t *gen=0) = 0; 
			virtual void store(std::string const &key,std::string const &b,std::set<std::string> const &triggers,time_t timeout,uint64_t const *gen=0) = 0;
			virtual void rise(std::string const &trigger) = 0;
			virtual void remove(std::string const &key) = 0;
			virtual void clear() = 0;
			virtual void stats(unsigned &keys,unsigned &triggers) = 0;
			virtual void add_ref() = 0;
			virtual bool del_ref() = 0;
			virtual ~base_cache()
			{
			}
		};
	} // impl

	inline void intrusive_ptr_add_ref(impl::base_cache *ptr)
	{
		ptr->add_ref();
	}
	inline void intrusive_ptr_release(impl::base_cache *ptr)
	{
		if(ptr && ptr->del_ref())
			delete ptr;
	}
} // cppcms
#endif