Re: Pointer math (merging ifs files)

[Scott Klement <sk@xxxxxxxxxxxxxxxx>]

Sender: Scott Klement <sk@xxxxxxxxxxxxxxxx>


> memcpy(u_data: s_data: st_size_s)
> memcpy(u_data + st_size_s: p_data: st_size_p)
> memcpy(u_data + st_size_s + st_size_p: e_data: st_size_e)

Hmmm... if you do that, you'll have to allocate memory to s_data, p_data, 
and e_data, read the data into that memory, and then copy it to the user 
space.  It would work, but you'd have two copies of everything in memory 
at once, and you'd have to spend extra CPU cycles copying the memory.

So, it would work, but I wonder why you wouldn't just read it into the 
user space directly?
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