Re: graphicsmagick signal handler problem

Bob Friesenhahn <[email protected]>
Newsgroups gmane.comp.video.graphicsmagick.help
Message-ID <[email protected]>
On Tue, 6 Mar 2018, yzh卯帽潞锚 wrote:

> Hi,
> I write to confirm whether GraphicsMagick can officially disable establishing signal handlers for library users in InitializeMagick. ImageMagick already disable it in MagickWandGenesis. See https://github.com/ImageMagick/ImageMagick/blob/93b707b4a5882ab3d7f8904984684846fe178a97/MagickWand/magick-wand.c

I can make the existing handling a bit smarter about SA_ONSTACK but 
making the change the way you suggest would be an API and ABI change 
so it might not be easily done.

Perhaps a global variable could be used to avoid breaking the ABI but 
then it would add an unpleasant global variable to the ABI.  Another 
way to do it would be to add some functions which could be called 
before InitializeMagick() in order to influence options used.

Bob
-- 
Bob Friesenhahn
[email protected], http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/

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