🚀 go-pugleaf

 Thanks very very much!


"Remy Lebeau \(TeamB\)" <gambit47.no.spam@no.spam.yahoo.com> wrote:
>
>"Ramy" <Ramy@NoMail.com> wrote in message
>news:40c58d7a$1@newsgroups.borland.com...
>
>> I need to write 2 applications which runs at the same time
>> on the computer (Windows-2000) and share same piece
>> of memory for exchanging data between each other
>
>Use a named file mapping to share a block of memory between the two
>programs.  Look at CreateFileMapping() and MapViewOfFile().  When both
>applications call CreateFileMapping() using the same name, they will get a
>handle to the same global mapping object.  Then MapViewOfFile() can turn
>that object into a pointer that both applications can then use to access the
>shared memory.
>
>> if for example one application change this matrix, the anther
>> application can take the matrix from the memory and use it,
>> or display it for example...
>
>Just make sure that you provide adequate synchronization, such as via a
>named mutex.
>
>> Can i allocate an array like this -
>>
>> float array[500][400];
>>
>> then write it's address ( &array[0][0] ) and size
>> (500x400) in a file, so the other application can read the
>> file and access the array by using the pointer and the size
>> from this file?
>
>No.  Applications have their own address spaces.  They cannot access each
>other's memory directly.  The value of a pointer in one application may not
>be a meaningful value in another program.
>
>Gambit