Hi,
Eeek... I was wondering about this after I got some crashes in an
experimental
version of Krita, too, but I rather hoped it wasn't this problem.
It works fine as long as you use just one color transform per thread.
Sharing transforms between threads doesn't work because the
1-pixel cache. So you must, either, use just one tranform per thread or
inhibit the caching by using cmsFLAGS_NOTCACHE.
I recommnd to leave the cache alone and limit to one thread
by transform. Cache *does* make a difference.
Incoming 1.16 will have more support for multithreading, though.
Regards
Marti Maria
The littleCMS project
http://www.littlecms.com
----- Original Message -----
From: "Boudewijn Rempt" <[EMAIL PROTECTED]>
To: <lcms-user@lists.sourceforge.net>
Sent: Friday, May 12, 2006 9:06 PM
Subject: Re: [Lcms-user] threading
On Friday 12 May 2006 17:04, John Cupitt wrote:
Hello all,
I've just noticed cmsDoTransform() isn't threadsafe (when I found
random image corruption on my SMP box, heh).
Has any thought gone into making a threadsafe version? If I looked at
this, would there be interest in patches?
Eeek... I was wondering about this after I got some crashes in an
experimental
version of Krita, too, but I rather hoped it wasn't this problem. I would
very much like a threadsafe lcms, especially because Krita 2.0 is being
designed to make good use of every chance at parallellism.
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