Re: FlexLocks
От | Bruce Momjian |
---|---|
Тема | Re: FlexLocks |
Дата | |
Msg-id | 201111211656.pALGuiG00528@momjian.us обсуждение исходный текст |
Ответ на | Re: FlexLocks (Robert Haas <robertmhaas@gmail.com>) |
Список | pgsql-hackers |
Robert Haas wrote: > On Wed, Nov 16, 2011 at 12:25 PM, Kevin Grittner > <Kevin.Grittner@wicourts.gov> wrote: > >> We could alternatively change one or the other of them to be a > >> struct with one member, but I think the cure might be worse than > >> the disease. ?By my count, we are talking about saving perhaps as > >> many as 34 lines of code changes here, and that's only if > >> complicating the type handling doesn't require any changes to > >> places that are untouched at present, which I suspect it would. > > > > So I stepped through all the changes of this type, and I notice that > > most of them are in areas where we've talked about likely benefits > > of creating new FlexLock variants instead of staying with LWLocks; > > if any of that is done (as seems likely), it further reduces the > > impact from 34 lines. ?If we take care of LWLockHeldByMe() as you > > describe, I'll concede the FlexLockId changes. > > Updated patches attached. It would be helpful if the patch included some text about how flexilocks are different from ordinary lwlocks. -- Bruce Momjian <bruce@momjian.us> http://momjian.us EnterpriseDB http://enterprisedb.com + It's impossible for everything to be true. +
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