#include <windows.h>
#include "utils.h"

#define BUF_SIZE 256
LPSTR szMapName = "MyFileMappingObject";
LPSTR szMsg = "Testing shared memory on windows";


int main(void)
{
	HANDLE hMapFile;
	LPVOID lpMapAddress;
	BOOL bRet;

	hMapFile = CreateFileMapping(
		INVALID_HANDLE_VALUE,         /* use swap, not a particular file */
		NULL,		              /* default security */
		PAGE_READWRITE,	              /* read/write access */
		0,	                      /* maximum object size (high-order DWORD) */
		1024,		              /* maximum object size (low-order DWORD) */
		szMapName);	              /* name of mapping object */
	DIE(hMapFile == NULL, "CreateFileMapping");

	lpMapAddress = MapViewOfFile(
			hMapFile,	      /* handle to map object */
			FILE_MAP_ALL_ACCESS,  /* read/write permission */
			0,		      /* offset (high-order) */
			0,		      /* offset (low-order) */
			0);
	DIE(lpMapAddress == NULL, "MapViewOfFile");

	ZeroMemory(lpMapAddress, strlen(szMsg) + 1);
	CopyMemory(lpMapAddress, szMsg, strlen(szMsg));

	Sleep(5000);

	bRet = UnmapViewOfFile(lpMapAddress);
	DIE(bRet == FALSE, "UnampViewOfFile");

	bRet = CloseHandle(hMapFile);
	DIE(bRet == FALSE, "CloseHandle");

	return 0;
}