5677 2005-11-09 07:50:45 -0800 speed up KWQ timers by using CFRunLoopTimer instead of NSTimer 2005-12-10 09:13:27 -0800 1 1 1 Unclassified WebKit WebKit Misc. 420+ Mac OS X 10.4 RESOLVED FIXED P2 Enhancement --- 1 darin darin eric timo oldest_to_newest 23847 0 darin 2005-11-09 07:50:45 -0800 I saw some NSTimer and Objective-C overhead when profiling benchmarks that can be eliminated. I'm working on a patch that speeds things up and also simplifies how the back/forward cache suspends and resumes timers. I landed this once, but it caused regressions so we have to work on this more and test a bit more. 23848 1 4640 darin 2005-11-09 08:09:34 -0800 Created attachment 4640 version that seems to work well I'm not sure exactly what to do about this. I can't reproduce any problems with this version of the patch, but Tim said he had big problems with Dashboard. I can't seem to test this with Dashboard successfully. Someone else may have to test and land this. I think the speedup and simplification is worth it, and there might even be some bug fixes in the cleaned up back/forward code. 23849 2 4640 darin 2005-11-09 08:14:06 -0800 Comment on attachment 4640 version that seems to work well Tim already reviewed this once -- I think it's time to review, test, and land this version. 25456 3 4640 eric 2005-12-03 14:00:13 -0800 Comment on attachment 4640 version that seems to work well Shouldn't PausedTimeouts create and destroy the actual array? Or maybe it should take them, but construction should be the last step in the fuction. Would be more obvious if we had PassRefPtr, but we don't yet. Also, I'm curious as to why you might wish to use a raw c array and length pointer (for the paused timeouts array), instead of something like a QMemArray which would hold the two together for you? Wow. That was a big patch. And I don't feel like my brain managed to soak in every line of code change, but in general it looke sane, besides the manual memory management noted above. 25467 4 darin 2005-12-03 16:38:15 -0800 (In reply to comment #3) > (From update of attachment 4640 [edit]) > Shouldn't PausedTimeouts create and destroy the actual array? Or maybe it > should take them, but construction should be the last step in the fuction. > Would be more obvious if we had PassRefPtr, but we don't yet. The PausedTimeouts class's destructor does destroy the actual array, but the constructor doesn't create it -- instead it adopts it. That's for efficiency but maybe there's a better way to do it. I'm not sure I understand your question. PassRefPtr wouldn't help much since the array is not a reference-counted object. > Also, I'm curious as to why you might wish to use a raw c array and length > pointer (for the paused timeouts array), instead of something like a QMemArray > which would hold the two together for you? A QMemArray would be OK, but it has extra overhead to accomodate resizing the array. This is a fixed-size array and we don't have a class that implements that. 25648 5 eric 2005-12-06 23:31:00 -0800 (In reply to comment #4) > (In reply to comment #3) > The PausedTimeouts class's destructor does destroy the actual array, but the constructor doesn't create it -- instead it > adopts it. That's for efficiency but maybe there's a better way to do it. > > I'm not sure I understand your question. PassRefPtr wouldn't help much since the array is not a reference-counted object. A momentary lapse of judgement. :) > > Also, I'm curious as to why you might wish to use a raw c array and length > > pointer (for the paused timeouts array), instead of something like a QMemArray > > which would hold the two together for you? > > A QMemArray would be OK, but it has extra overhead to accomodate resizing the array. This is a fixed-size array and we > don't have a class that implements that. Yes, that's a shame. The encapsulation may still be worth the overhead. 25769 6 4640 darin 2005-12-10 09:06:59 -0800 Comment on attachment 4640 version that seems to work well This patch was missing at least one required nil check. 4640 2005-11-09 08:09:34 -0800 2005-12-10 09:06:59 -0800 version that seems to work well CFTimerPatch.txt text/plain 63612 darin SW5kZXg6IGtodG1sL2VjbWEva2pzX3dpbmRvdy5jcHAKPT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PQpSQ1MgZmlsZTogL2N2 cy9yb290L1dlYkNvcmUva2h0bWwvZWNtYS9ranNfd2luZG93LmNwcCx2CnJldHJpZXZpbmcgcmV2 aXNpb24gMS4xODcKZGlmZiAtcCAtdSAtcjEuMTg3IGtodG1sL2VjbWEva2pzX3dpbmRvdy5jcHAK LS0tIGtodG1sL2VjbWEva2pzX3dpbmRvdy5jcHAJOSBOb3YgMjAwNSAwMjo0NjoyNyAtMDAwMAkx LjE4NworKysga2h0bWwvZWNtYS9ranNfd2luZG93LmNwcAk5IE5vdiAyMDA1IDE2OjA5OjI1IC0w MDAwCkBAIC04MCwzMCArODAsMjUgQEAKIC8vIDxjbWF0aD4gYW5kIDxtYXRoLmg+IHRoZSBtYWNy b3MgbmVjZXNzYXJ5IGZvciBmdW5jdGlvbnMgbGlrZQogLy8gaXNuYW4gYXJlIG5vdCBkZWZpbmVk 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