On 7 Jan 2008, at 4:59 PM, Adam R. Maxwell wrote: > > On Jan 7, 2008, at 3:22 AM, Christiaan Hofman wrote: > >> Adam, perhaps you have an idea on this. With some PDFs, I see a >> considerable memory leak in thumbnail drawing (in some cases 100MB). >> I tracked the trouble to -[PDFPage drawWithBox]. The PDFView >> sometimes drops graphics from the offending pages and does not seem >> to have the leak and slowdown, at least not as much. The thumbnails >> never drop graphics. I can send a file if you want (can't attach it >> on the list). > > Wow! That's a pretty incredible leak; I've never seen anything like > it. It'd be interesting to see if it's fixed in Leopard, but I don't > have any ideas for workarounds. Did you try overriding drawWithBox: > to get the CGPDFPageRef via -pageRef and draw it directly to see if > that "fixes" the leak?
It does not seem to be a real memory leak, or at least not that big. But it's a very strange use of memory. When I open this file and show the thumbnails for page 12&13 real memory use goes up to 200MB (according to Activity monitor), and doesn't go down again after closing the document (also not after a while). However, when I reopen the document without showing those two thumbnails, memory usage goes *down*. After a few times doing this memory usage is back to normal (about 30-40MB). Also MallocDebug doesn't show any leaks. But there is a definite bug. Drawing the thumbnails is very very slow, and I get malloc errors. Christiaan ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ skim-app-develop mailing list skim-app-develop@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/skim-app-develop
