Re: and waiting - Mailing list pgsql-hackers

From Alvaro Herrera
Subject Re: and waiting
Date
Msg-id 20080202232757.GB5238@alvh.no-ip.org
Whole thread Raw
In response to Re: and waiting  ("Gurjeet Singh" <singh.gurjeet@gmail.com>)
Responses Re: and waiting  ("Gurjeet Singh" <singh.gurjeet@gmail.com>)
Re: and waiting  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-hackers
Gurjeet Singh escribió:

> I just looked at the patch... Isn't PG_TRY() an expensive call to make in
> the lock.c code? I was thinking of registering a Xact callback using
> RegisterXactCallback() and performing 'waiting' reset in that callback if
> the Xact event is XACT_EVENT_ABORT.

PG_TRY is not expensive as all that -- it's just a sigsetjmp() call and
another stack frame.

-- 
Alvaro Herrera                                http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.


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