On Mon, Jul 12, 2010 at 01:59:30PM -0500, Nicolas Williams wrote:
>             The result is that you end up with a tiny penalty for fork
> detection: two loads, a compare and a likely-not-taken branch.

Actually three loads, two compares and two likely-not-taken branch,
unless you know you always have pthread_atfork() available at run-time
(as in Solaris 10 and up, whih is what I had in mind when I wrote the
above), in which case you can make this two loads, one compare and one
likely-not-taken branch.

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