[webkit-dev] Interpreting LEAK: on Shutdown
I looked at this document on the wiki: http://trac.webkit.org/wiki/Memory%20Use and I'm curious about how to interpret the output on the console when running via Safari. For example, here's one output when I just quit with windows open: LEAK: 2 WebCoreNode LEAK: 29 CachedResource Here's another when all the windows were closed: No leak checking done: At least one WebView is still open. I'm particularly interested in whether the MathML code is leaking. I don't have any direct concerns but I want to understand how to check my rendering object implementations. -- --Alex Milowski The excellence of grammar as a guide is proportional to the paucity of the inflexions, i.e. to the degree of analysis effected by the language considered. Bertrand Russell in a footnote of Principles of Mathematics ___ webkit-dev mailing list webkit-dev@lists.webkit.org http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev
Re: [webkit-dev] Interpreting LEAK: on Shutdown
Hi Alex. I looked at this document on the wiki: http://trac.webkit.org/wiki/Memory%20Use and I'm curious about how to interpret the output on the console when running via Safari. For example, here's one output when I just quit with windows open: LEAK: 2 WebCoreNode LEAK: 29 CachedResource Those messages indicate that some objects were not deleted before shutdown. Ensuring that all known references are released before shutdown, and then verifying that all objects are deleted, is an aid to debugging memory leaks. But the mechanism to ensure that all known references are released before shutdown seems to have bit-rotted a bit. Maybe you can fix it. Best, Geoff ___ webkit-dev mailing list webkit-dev@lists.webkit.org http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev
Re: [webkit-dev] Interpreting LEAK: on Shutdown
On Tue, Jun 22, 2010 at 6:06 PM, Geoffrey Garen gga...@apple.com wrote: Those messages indicate that some objects were not deleted before shutdown. Ensuring that all known references are released before shutdown, and then verifying that all objects are deleted, is an aid to debugging memory leaks. But the mechanism to ensure that all known references are released before shutdown seems to have bit-rotted a bit. Maybe you can fix it. OK. But how do you avoid this: No leak checking done: At least one WebView is still open. If you quit all the windows you still get it. In general, the documentation on all this is a little sparse. -- --Alex Milowski The excellence of grammar as a guide is proportional to the paucity of the inflexions, i.e. to the degree of analysis effected by the language considered. Bertrand Russell in a footnote of Principles of Mathematics ___ webkit-dev mailing list webkit-dev@lists.webkit.org http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev
Re: [webkit-dev] Interpreting LEAK: on Shutdown
On Jun 22, 2010, at 1:30 PM, Alex Milowski wrote: But how do you avoid this: No leak checking done: At least one WebView is still open. There’s no real need to avoid that one. It’s just advisory. If you quit all the windows you still get it. If you get it even after closing all windows, it’s probably a bug. In general, the documentation on all this is a little sparse. There is no documentation that I’m aware of. -- Darin ___ webkit-dev mailing list webkit-dev@lists.webkit.org http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev
Re: [webkit-dev] Interpreting LEAK: on Shutdown
OK. But how do you avoid this: No leak checking done: At least one WebView is still open. Originally, this message was about fast shutdown. An application choosing not to close all windows / WebViews before termination would emit this message, which was slightly clearer than mysterious LEAK messages. If you quit all the windows you still get it. Seems like a bug. Like I said, I think there's been some bitrot in this area. The best way to track down this bug is probably to set a breakpoint on WebView allocation and destruction, and log backtraces. Geoff ___ webkit-dev mailing list webkit-dev@lists.webkit.org http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev
