On Tue, Mar 18, 2014 at 01:26:12AM -0700, noman pouigt wrote:
> Hello,
>
> I looked through the documentation for atomic
> operations but couldn't find out the api for following
> operation:
>
> x = 1;
> temp = atomic_read_increment(x);
>
> so basically this will read the old value of x in temp
> and then increment x.
>
> so temp = 1 and x = 2.
>
> Is this api already available?
You want atomic_inc_return(). It returns the new value rather than the
old value, but you can do the following:
temp = atomic_inc_return(&x) - 1;
Thanx, Paul
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