SharedMemory.h

// $Id: SharedMemory.h 21 2010-09-05 04:18:17Z cschwarz1 $

#ifndef BASE_SHAREDMEMORY_H
#define BASE_SHAREDMEMORY_H

#ifdef _WIN32
    #define WIN32_LEAN_AND_MEAN
    #include <windows.h>
#endif
#include <cstdlib>

namespace base {

    class PPBASE_EXPORT SharedMemory {
    public:
        enum openFlags {
            ofCreate    = 0x01,  
            ofExclusive = 0x02   
        };

        SharedMemory();

        ~SharedMemory();

        void close();


        void destroy();


        void *getAddr() const;


        void *map(bool rw = true, void *addr = NULL);


        void open(const char *name, unsigned size, int flags = 0);

        void unmap();

    private:
        void   *_addr;    
    #ifdef _WIN32
        HANDLE  _shmem;   
    #else
        int     _shmid;   
    #endif
    };
}

#endif