void WriteStackToBuf(Stack *stack, char *pBuf) {
    CopyMemory((void*) (pBuf+sizeof(int)*0),&stack->max_len, sizeof(int));
    CopyMemory((void*) (pBuf+sizeof(int)*1),&stack->top, sizeof(int));
    CopyMemory((void*) (pBuf+sizeof(int)*2),&stack->buf, sizeof(int));
    for(int i=0;i<stack->max_len;i++){
        CopyMemory((void*) (pBuf+sizeof(int)*3+i),&stack->stack[i], sizeof(char));
    }
}
Stack ReadStackFromBuf(char *pBuf) {
    int max_len,top,buf;
    Stack s;
    CopyMemory((void*)&max_len,pBuf+sizeof(int)*0, sizeof(int));
    CopyMemory((void*)&top, pBuf+sizeof(int)*1,sizeof(int));
    CopyMemory((void*)&buf,pBuf+sizeof(int)*2, sizeof(int));

    s.max_len=max_len;
    s.top=top;
    s.buf=buf;
    char* stack=new char[max_len];
    for(int i=0;i<max_len;i++){
        CopyMemory((void*)&stack[i],pBuf+sizeof(int)*3+i,sizeof(char));
    }
    s.stack=stack;
    return s;
}
int _tmain(int argc, _TCHAR* argv[]) {

    HANDLE hEventBufEmpty=CreateEvent(NULL, FALSE, TRUE, _T("Global\\BufEmpty"));
    HANDLE hEventBufFull=CreateEvent(NULL, FALSE, FALSE, _T("Global\\BufFull"));
    Stack stack;
    HANDLE  hMapFile = CreateFileMapping(
            INVALID_HANDLE_VALUE,    // use paging file
            NULL,                    // default security
            PAGE_READWRITE,          // read/write access
            0,                       // maximum object size (high-order DWORD)
            BUF_SIZE,                // maximum object size (low-order DWORD)
            FileInMemoryName);       // name of mapping object
    char* pBuf;
    for(;;){
        WaitForSingleObject(hEventBufFull, INFINITE);
        std::cout<<"ASDASD";
        pBuf = (char*) MapViewOfFile(hMapFile,   // handle to map object
                                     FILE_MAP_ALL_ACCESS, // read/write permission
                                     0,
                                     0,
                                     BUF_SIZE);
        stack=ReadStackFromBuf(pBuf);
        push(&stack,stack.buf);

        pBuf = (char*) MapViewOfFile(hMapFile,   // handle to map object
                                     FILE_MAP_ALL_ACCESS, // read/write permission
                                     0,
                                     0,
                                     BUF_SIZE);
        WriteStackToBuf(&stack,pBuf);

        SetEvent(hEventBufEmpty);

    }
    return 0;
}