On Tue, Jun 1, 2010 at 11:22 AM, Jens Alfke <j...@mooseyard.com> wrote:
> > On May 31, 2010, at 6:41 PM, Ken Tozier wrote: > > > What's happening is that if I comment out the line that initializes a new > image, the memory leak disappears. I've tried forcibly releasing the images, > tried autoreleasing them, tried creating a fixed size buffer into which all > the images are read, nothing seems to work. > > First off, -retain / -release / -autorelease are all no-ops when GC is > enabled, so calling them won’t make any difference. > > NSImage does some caching behind the scenes, by default, and this might not > be getting cleaned up in a timely enough manner. You could try using the > caching-related NSImage methods to try to reduce this. > > (A common issue in GC environments is that the collector isn’t aware of > large external memory buffers that aren’t in the GC heap but are kept around > by GC’d objects. So in this case the collector may not realize that, > although the NSImage objects themselves are small, they’re holding onto > large pixmap buffers in the malloc heap. So it probably isn’t running > frequent enough collections to free up that memory.) > NSImage specifically allocates its memory buffers from the GC heap (unscanned) to avoid this. -Ken Cocoa Frameworks > > Another option is to directly tell the collector to run a collection after > every pass through your loop. > > —Jens_______________________________________________ > > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/cocoa-dev/kenferry%40gmail.com > > This email sent to kenfe...@gmail.com > _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
