NtDelayExecution: reduce multiple stack allocation

[Ferdinand Nölscher]

In ntdll/sync.c, line 1232 the struct "timeval" is being allocated in a
for-loop.
Would'nt it be faster if tv was created before entering the loop?
I have not tested doing so but I think that it would increase
performance a tiny bit.

kind regards

[Marcus Meissner]

On Sat, Mar 10, 2012 at 04:20:20PM +0100, Ferdinand Nölscher wrote:
> In ntdll/sync.c, line 1232 the struct "timeval" is being allocated in a
> for-loop.
> Would'nt it be faster if tv was created before entering the loop?
> I have not tested doing so but I think that it would increase
> performance a tiny bit.

Do not worry, the space for it is not allocated per loop.
All compilers from the last 20 years allocate the stackspace
on function entry once.

Ciao, Marcus