Thanks Ben for the explanation,
On Mon, Jul 22, 2013 at 10:23 AM, Ben Pfaff <b...@nicira.com> wrote: > On Mon, Jul 22, 2013 at 09:10:52AM -0700, Alex Wang wrote: > > Looks good to me, > > > > Want to ask question about "ovsthread_once_start()", > > 1. why do we have "ovsthread_once_start()" defined in header file? > > The "fast path" for using ovsthread_once_start() is just a test and > conditional jump. The alternative is a function call followed by a > test and a conditional jump. I decided to use the former as an > optimization; it might have been premature. Still not clear about, why there is no function call when defining the function in header file. This is different to having "inline" function, right?
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