🚀 go-pugleaf

Hay guys, just a really quick question.

Post the other week about using Memory Mapped Files and Remy gave me a 
really good reply.

Just to summarise, I have a service that creates a MMF.  It protects access 
to it using a mutex.  Client applications wait for the mutex to be release 
and then can read the data from the MMF.  For the client, remy suggested 
this order of operations:

    --- application ---

    hMapping = OpenFileMapping(FILE_MAP_READ, FALSE, "MyFileMapping");
    hMutex = OpenMutex(SYNCHRONIZE, FALSE, "MyFileMappingMutex");
    ...
    // for each read operation...
    if( WaitForSingleObject(hMutex, 1000) == WAIT_OBJECT_0 )
    {
        // Perform read operation on the MMF...
        ReleaseMutex(hMutex);
    }
    ...
    CloseHandle(hMutex);
    CloseHandle(hMapping);

My question is, do you have to call MapViewOfFile() each time you read the 
MMF or can it be called once, initially.  For example, should it be called 
from within the WaitForSingleObject() call?  Seems to work either way, just 
want to know what is the best practice.

Many thanks in advance,

Mike