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// **********************************************************************
//
// Copyright (c) 2003-2011 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
#ifndef FREEZE_SHARED_DB_ENV_H
#define FREEZE_SHARED_DB_ENV_H
#include <Freeze/Map.h>
#include <IceUtil/FileUtil.h>
#include <Ice/Ice.h>
#include <db_cxx.h>
#include <map>
#include <list>
namespace Freeze
{
class CheckpointThread;
typedef IceUtil::Handle<CheckpointThread> CheckpointThreadPtr;
class SharedDbEnv;
typedef IceUtil::Handle<SharedDbEnv> SharedDbEnvPtr;
class MapDb;
class Transaction;
typedef IceInternal::Handle<Transaction> TransactionPtr;
class ConnectionI;
typedef IceUtil::Handle<ConnectionI> ConnectionIPtr;
class TransactionalEvictorContext;
typedef IceUtil::Handle<TransactionalEvictorContext> TransactionalEvictorContextPtr;
class SharedDbEnv
{
public:
static SharedDbEnvPtr get(const Ice::CommunicatorPtr&, const std::string&, DbEnv* = 0);
~SharedDbEnv();
//
// Returns a shared map Db; the caller should NOT close/delete this Db.
//
MapDb* getSharedMapDb(const std::string&,const std::string&, const std::string&,
const KeyCompareBasePtr&, const std::vector<MapIndexBasePtr>&, bool);
//
// Tell SharedDbEnv to close and remove this Shared Db from the map
//
void removeSharedMapDb(const std::string&);
void __incRef();
void __decRef();
//
// EvictorContext factory/manager
//
TransactionalEvictorContextPtr createCurrent();
TransactionalEvictorContextPtr getCurrent();
void setCurrentTransaction(const TransactionPtr& tx);
DbEnv* getEnv() const;
const std::string& getEnvName() const;
const Ice::CommunicatorPtr& getCommunicator() const;
typedef std::map<std::string, MapDb*> SharedDbMap;
private:
SharedDbEnv(const std::string&, const Ice::CommunicatorPtr&, DbEnv* env);
void cleanup();
DbEnv* _env;
std::auto_ptr<DbEnv> _envHolder;
const std::string _envName;
const Ice::CommunicatorPtr _communicator;
MapDb* _catalog;
MapDb* _catalogIndexList;
int _refCount;
int _trace;
CheckpointThreadPtr _thread;
#ifdef _WIN32
DWORD _tsdKey;
#else
pthread_key_t _tsdKey;
#endif
SharedDbMap _sharedDbMap;
IceUtil::Mutex _mutex;
IceUtilInternal::FileLockPtr _fileLock;
};
inline DbEnv*
SharedDbEnv::getEnv() const
{
return _env;
}
inline const std::string&
SharedDbEnv::getEnvName() const
{
return _envName;
}
inline const Ice::CommunicatorPtr&
SharedDbEnv::getCommunicator() const
{
return _communicator;
}
}
#endif
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