Calling malloc from a signal handler
jasone at FreeBSD.org
Fri Sep 19 14:31:27 UTC 2008
Stephen Montgomery-Smith wrote:
> I notice that if you use "malloc" from within a signal handler on
> FreeBSD-6.x, that you can potentially trigger a "recursive call" error.
> But this seems to have changed in FreeBSD-7.x.
The malloc implementation is completely new in FreeBSD 7, so not all of
the internal error checking code is the same.
> Is it now permissible to call "malloc" from within a signal handler in
Calling malloc from within a signal handler can cause application
deadlock, so although you won't see an error message printed, you are
unlikely to be happy with the results.
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