Обсуждение: Re: [HACKERS] [PATCHES] fork/exec patch

Magnus Hagander wrote:
> The other way to go is to try to make the signal handlers thread safe.
> Do you know offhand how much code they touch? Since they're not called
> often, one could perhaps start with just wrapping all the code they
> touch (and that touches the same data they do) in critical sections.
> They're very lightweight and shouldn't have a noticeable performance
> impact, if it's possible to identify a limited number of locations to
> put it in there (as we certainly wouldn't want to bloat the code all
> over the place)

Don't forget that you have to add the volatile modifier to keep the
compiler from optimizing flags outside of loops, etc.  for variables
that could change inside a critical section.

Merlin