102306 2012-11-14 17:41:48 -0800 For single element arrays use the pointer into the CFDataRef instead of copying data 2012-11-24 12:44:12 -0800 1 1 1 Unclassified WebKit Platform 528+ (Nightly build) Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 psolanki psolanki ap beidson benjamin darin ddkilzer japhet psolanki webkit.review.bot oldest_to_newest 767521 0 psolanki 2012-11-14 17:41:48 -0800 This is an optimization when USE(NETWORK_CFDATA_ARRAY_CALLBACK) is available. Generally, WebCore copies the data returned from CFNetwork into its own buffers once the resource is done loading. However, if the resource is cached, CFNetwork will return us a CFArrayRef with exactly 1 CFDataRef in it. In such a case, it might be beneficial to not copy the data and just use the byte pointer i.e. call CFDataGetBytePtr() and use that memory directly. 767522 1 psolanki 2012-11-14 17:42:10 -0800 <rdar://problem/12267471> 768295 2 174487 psolanki 2012-11-15 10:49:13 -0800 Created attachment 174487 Patch 768402 3 174487 psolanki 2012-11-15 12:55:20 -0800 Comment on attachment 174487 Patch Retracting. This needs another tweak. 768739 4 174569 psolanki 2012-11-15 17:31:12 -0800 Created attachment 174569 Patch 768749 5 174569 ap 2012-11-15 17:38:02 -0800 Comment on attachment 174569 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=174569&action=review Looks reasonable to me. Brady might want to have a look too, as he's been refactoring adjacent code. > Source/WebCore/ChangeLog:22 > + (WebCore): It is helpful to edit ChangeLogs to remove useless gunk like this. ChangeLogs are meant for human consumption, so anything you can do to make reading easier is a plus (but obviously, not hugely important for somethign trivial like this). > Source/WebCore/platform/SharedBuffer.cpp:149 > + const char *buffer = singleDataArrayBuffer(); Star goes to the left. > Source/WebCore/platform/cf/SharedBufferCF.cpp:144 > + return reinterpret_cast<const char *>(CFDataGetBytePtr(m_dataArray.at(0).get())); Ditto. 769583 6 psolanki 2012-11-16 12:39:45 -0800 Thanks for the review. I'll commit with the changes suggested. I also had to change a variable name since the compiler got confused about buffer being a const char * and a member function. 769587 7 psolanki 2012-11-16 12:47:47 -0800 Committed r134987: <http://trac.webkit.org/changeset/134987> 769689 8 174569 darin 2012-11-16 14:51:15 -0800 Comment on attachment 174569 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=174569&action=review > Source/WebCore/platform/SharedBuffer.cpp:151 > + const char *buffer = singleDataArrayBuffer(); > + if (buffer) > + return buffer; This would be slightly nicer with the variable definition inside the if. > Source/WebCore/platform/cf/SharedBufferCF.cpp:143 > + if (m_dataArray.size() == 1) This would be slightly nicer as an early return. 769692 9 darin 2012-11-16 14:52:08 -0800 (In reply to comment #6) > I also had to change a variable name since the compiler got confused about buffer being a const char * and a member function. An alternate solution in cases like that is to use this->functionName syntax to call a member function that is shadowed by a same-named local variable. We like that because it lets us use the cleanest simplest names for both. 769784 10 psolanki 2012-11-16 17:00:45 -0800 Reopening to attach new patch. 769785 11 174785 psolanki 2012-11-16 17:00:46 -0800 Created attachment 174785 Be slightly nicer! Sounds good. Added a patch with the comments addressed 771294 12 174785 bfulgham 2012-11-19 17:44:03 -0800 Comment on attachment 174785 Be slightly nicer! Since the Apple guys are on vacation, and you have executed the changes ap and Darin asked for, r=me. 771316 13 174785 webkit.review.bot 2012-11-19 17:55:49 -0800 Comment on attachment 174785 Be slightly nicer! Clearing flags on attachment: 174785 Committed r135221: <http://trac.webkit.org/changeset/135221> 774879 14 psolanki 2012-11-24 12:44:12 -0800 Brent, thanks for the r+ and cq+. 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