83156 2012-04-04 06:28:30 -0700 [WIN] Simplify implementation of currentTime() 2012-07-23 01:00:04 -0700 1 1 1 Unclassified WebKit Platform 528+ (Nightly build) PC Windows 7 RESOLVED FIXED P2 Normal --- 1 paroga paroga aestes aroben bfulgham darin jberlin jhoneycutt sfalken oldest_to_newest 595484 0 paroga 2012-04-04 06:28:30 -0700 [WIN] Simplify implementation of currentTime() 595502 1 135583 paroga 2012-04-04 06:51:22 -0700 Created attachment 135583 Patch 598055 2 136155 paroga 2012-04-08 13:02:24 -0700 Created attachment 136155 Patch 598340 3 136155 aroben 2012-04-09 09:36:48 -0700 Comment on attachment 136155 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=136155&action=review > Source/WTF/wtf/CurrentTime.cpp:81 > + union { > + FILETIME fileTime; > + ULONGLONG quadPart; > + } u; Is a union safe? MSDN says, "Do not cast a pointer to a FILETIME structure to either a ULARGE_INTEGER* or __int64* value because it can cause alignment faults on 64-bit Windows." 598403 4 136262 paroga 2012-04-09 10:31:01 -0700 Created attachment 136262 Patch 601438 5 136262 aroben 2012-04-12 12:24:28 -0700 Comment on attachment 136262 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=136262&action=review > Source/WTF/wtf/CurrentTime.cpp:86 > + ULONGLONG dateTime = (static_cast<ULONGLONG>(fileTime.dwHighDateTime) << 32) | fileTime.dwLowDateTime; I think it would be nicer to copy fileTime into a ULARGE_INTEGER (without using a union) and then use its QuadPart member. That's what MSDN recommends. Sorry for not being more explicit before. 637656 6 144916 paroga 2012-05-30 13:49:05 -0700 Created attachment 144916 Patch 646483 7 144916 bfulgham 2012-06-11 17:47:01 -0700 Comment on attachment 144916 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=144916&action=review I think this change looks great. Please consider retaining the comments I mention in the detailed notes when you commit the change. > Source/WTF/wtf/CurrentTime.cpp:-222 > - I don't like losing the following comments, which I found very illuminating about this routine. Could you please copy these into your revised implementation so that non-Windows people are aware that Windows ticks are in 100s of nanoseconds, etc.? 651034 8 paroga 2012-06-17 14:06:33 -0700 Committed r120552: <http://trac.webkit.org/changeset/120552> 654139 9 darin 2012-06-20 18:58:12 -0700 This rewrite of the function was wrong. See bug 89433 for the problem and fix. But also, what was so wrong with the old version? 654203 10 bfulgham 2012-06-20 20:55:52 -0700 Although there was a mistake in the units returned (milliseconds rather than seconds), I think the intent of the change was good because it reduced the code differences between the standard Windows and WinCE implementations. There doesn't seem to be any meaningful difference in accurracy or precision between _ftime and GetSystemTimeAsFileTime, but since the routine is peppered with Windows-specific magic numbers related to "ticks per epoch" and so forth, it probably makes sense to stick with the Windows API calls so that the whole things hangs together. 135583 2012-04-04 06:51:22 -0700 2012-04-08 13:02:14 -0700 Patch bug-83156-20120404155134.patch text/plain 4141 paroga U3VidmVyc2lvbiBSZXZpc2lvbjogMTEzMTgyCmRpZmYgLS1naXQgYS9Tb3VyY2UvV1RGL0NoYW5n ZUxvZyBiL1NvdXJjZS9XVEYvQ2hhbmdlTG9nCmluZGV4IGZkNDhmNzViMzRmYTQxNDIxN2RjNTBm MDM0ZGYxOTE1ODYyNDQ0MWQuLmUxMTJlOGI2YjFhNDUxYmI4MDhjNjdmOTkyMTdjZTY2NjBkZjU4 Y2QgMTAwNjQ0Ci0tLSBhL1NvdXJjZS9XVEYvQ2hhbmdlTG9nCisrKyBiL1NvdXJjZS9XVEYvQ2hh bmdlTG9nCkBAIC0xLDMgKzEsMTkgQEAKKzIwMTItMDQtMDQgIFBhdHJpY2sgR2Fuc3RlcmVyICA8 cGFyb2dhQHdlYmtpdC5vcmc+CisKKyAgICAgICAgW1dJTl0gU2ltcGxpZnkgaW1wbGVtZW50YXRp b24gb2YgY3VycmVudFRpbWUoKQorICAgICAgICBodHRwczovL2J1Z3Mud2Via2l0Lm9yZy9zaG93 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