Horton

Re: Condition variables vs interrupts

Shawn Debnath <sdn@amazon.com>

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From: Shawn Debnath <sdn@amazon.com>
To: Thomas Munro <thomas.munro@gmail.com>
Cc: pgsql-hackers <pgsql-hackers@postgresql.org>, Tomas Vondra <tomas.vondra@2ndquadrant.com>
Date: 2019-12-21T01:09:46Z
Lists: pgsql-hackers 
On Fri, Dec 20, 2019 at 12:05:34PM +1300, Thomas Munro wrote:

> I think we should probably just remove the unusual ResetLatch() call,
> rather than adding a CFI().  See attached.  Thoughts?

I agree: removing the ResetLatch() and having the wait event code deal 
with it is a better way to go. I wonder why the reset was done in the 
first place?

-- 
Shawn Debnath
Amazon Web Services (AWS)

Commits

  1. Don't reset latch in ConditionVariablePrepareToSleep().

  2. Introduce timed waits for condition variables.