Alireza

#include <windows.h>
#include <stdio.h>
#include <conio.h>
#include <string.h>


#include "MCCLSharedMemory.h"

HANDLE hMapFile;
LPSTR hMapView;



//Function : MCCLCreateSharedMemory
//Description: Creates a shared memory with given name and size
//Input : MapSize = Size of the shared memory (if it's zero, we'll use a defual size)
//Output: Void
void MCCLCreateSharedMemory(int MapSize)
{

    if (MapSize == 0)
        MapSize = 1048576;

    hMapFile = CreateFileMapping(INVALID_HANDLE_VALUE,
        NULL,
        PAGE_READWRITE,
        0,
        (DWORD)MapSize,
        "Global\\MyFileMappingObject");

    hMapView = (LPSTR) MapViewOfFile(hMapFile,
        FILE_MAP_ALL_ACCESS,
        0,
        0,
        0);
}

//Function : MCCLOpenSharedMemory
//Description : Opens the shared memory with the given name if it exists
//Input : None
//Output : Void
void MCCLOpenSharedMemory()
{

   hMapFile = OpenFileMapping(FILE_MAP_ALL_ACCESS,
        FALSE,
        "Global\\MyFileMappingObject");

    hMapView = (LPSTR) MapViewOfFile(hMapFile,
        FILE_MAP_ALL_ACCESS, //FILE_MAP_WRITE | FILE_MAP_READ,
        0,
        0,
        0);

}

//Function : MCCLDestroySharedMemory
//Destorys the shared memory object, handles, etc
//Input : None
//Output : Void
void MCCLDestroySharedMemory ()
{
        UnmapViewOfFile(hMapView)

    CloseHandle(hMapFile);
}

//Function : WriteOnSharedMemory
//Description : Writes a  block of data of given size into the shared memory
//Input : data = The block of data to be written to the shared memory
//        WriteSize = size of the data to be written into the shared memory in bytes
//Output : void
void WriteOnSharedMemory(char* data, int WriteSize)
{

    CopyMemory( (PVOID)hMapView, (const VOID *)data, (SIZE_T)WriteSize);

}

//Function : ReadFromSharedMemory
//Description : Reads a  block of data of given size from the shared memory
//Input : data = The block of data to be read from the shared memory
//        ReadSize = size of the data to be read from the shared memory in bytes
//Output : void

void ReadFromSharedMemory(char *data, int ReadSize)
{

    CopyMemory( (PVOID)data, (const VOID *)hMapView, (SIZE_T)ReadSize);

}