vlShmPool.h

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/*********************************************************************
 ** Copyright (c) 1992-2010 VT MAK
 ** All rights reserved.
 *********************************************************************/
#pragma once

#include "vlString.h"


#ifdef _WIN32
#include <WinSock2.h>
#else
#include <sys/types.h>
#endif

#ifdef DtUSE_UTILITIES_NAMESPACE
namespace DtUSE_UTILITIES_NAMESPACE
{
#endif

#ifndef _WIN32
key_t DtGetShmKeyFromString(const DtString& name);
#endif

class DT_DLL_VLUTIL DtSharedMemoryPoolManager
{
public:

   DtSharedMemoryPoolManager(const DtString& shared_name, unsigned long size); 

   virtual ~DtSharedMemoryPoolManager();

private:
   DtSharedMemoryPoolManager(const DtSharedMemoryPoolManager &other);
   DtSharedMemoryPoolManager& operator=(const DtSharedMemoryPoolManager &other);

public:
   void *address() const;

protected:

   DtString myName;
   void *myAddr;

#ifdef _WIN32
   HANDLE myMapFile;
#else
   int myId;
#endif

};

class DT_DLL_VLUTIL DtSharedMemoryPoolClient
{

public:

   DtSharedMemoryPoolClient(const DtString& shared_name); 

   virtual ~DtSharedMemoryPoolClient();

private:

   DtSharedMemoryPoolClient(const DtSharedMemoryPoolClient &other);

   DtSharedMemoryPoolClient& operator=(const DtSharedMemoryPoolClient &other);

public:

   void *address() const;

protected:

   DtString myName;
   void *myAddr;
#ifdef _WIN32
   HANDLE myMapFile;
#else
   int myId;
#endif
};

#ifdef DtUSE_UTILITIES_NAMESPACE
} 
#endif