Daniel Eischen writes:
> > It might have been slightly clearer if the _foo and __foo names had been
> > reversed, so that "foo" always weakly referenced "_foo" whether or not
> > the function was a cancellation point. But that would have probably
> > caused a lot of changes in existing code (?).
> 
> Non-cancellation points are always single underscores so that
> the implementation of libc can always use _foo and not care
> about whether to use _foo() or __foo().  Libc should never
> call functions that are cancellation points so it makes it
> easier to just know that you should use the underscore version
> of the system calls.  The same holds true when libc wants
> to use pthread_* routines; it should only use the underscore
> variants so that libc_r can tell the difference between the
> implementation's locks and the application's locks.

Right, forgot about that..

Thanks,
-Archie

__________________________________________________________________________
Archie Cobbs     *     Packet Design     *     http://www.packetdesign.com

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