On Mon, 16 Jul 2001, Adi Fairbank wrote:
> Actually, I don't want child processes to inherit the page locks across a
> fork. I just wanted to experiment with performance issues when only the
> parent process is locked in memory. (I have a theory that when the parent
> process swaps to disk, the swapped pages become unshared for the rest of the
> server's life)
>
> I was hoping you could give me a hint as to where in the source code I could
> call mlockall(), e.g. file mod_perl.c, line NNN..
you should just be able to create a module with a .xs something like:
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#include "sys/mman.h"
MODULE = Mlock PACKAGE = Mlock
int
mlockall()
CODE:
RETVAL = (mlockall(MCL_CURRENT) == 0);
OUTPUT:
RETVAL
and call Mlock::mlockall(); in a startup script.
