Re: Keeping the Screen Turned off While Getting Inputs

[Ahmad Nouralizadeh]

 Perhaps I didn't express my question precisely. I understand that you are 
talking about the mmap function in the kernel which is usually a function 
pointer in vm_operations...
My question is about the userspace structure of X11. IIUC, we have X11 clients, 
which are GUI apps.They have a portion of the X11 related libraries (those 
needed for clients) mapped into their address space. As the app and the X11 
libraries (client code in X11) are in the same address space the graphical data 
are accessible by both. Xserver is a separate process (i.e., Xorg). How are the 
graphical data sent to the server? Does it use shared memory? Multiple shared 
memory regions to service each client?
Is Opengl mapped only into the server portion?