Messages in this thread | ![/](/images/icornerl.gif) | | Date | Sat, 5 Jun 2004 16:07:06 -0700 (PDT) | From | Davide Libenzi <> | Subject | Re: clone() <-> getpid() bug in 2.6? |
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On Sat, 5 Jun 2004, Robert Love wrote:
> On Sat, 2004-06-05 at 14:53 -0700, Chris Wedgwood wrote: > > > glibc caches getpid() ?!? > > > > it's not like it's a slow syscall or used often > > It is almost certainly done to improve the speed of some stupid > microbenchmark - say, one that just calls getpid() repeatedly (simple > because it is NOT slow) to measure system call overhead. > > Or maybe libc uses the PID a lot internally. I don't know. > > But it sure seems wrong.
It is likely used by pthread_self(), that is pretty much performance sensitive. I'd agree with Ulrich here.
- Davide
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