On 09/03/2014 12:23 AM, Andres Freund wrote:
On 2014-09-02 17:21:03 -0400, Tom Lane wrote:
Heikki Linnakangas <hlinnakan...@vmware.com> writes:
I was going to suggest using WaitLatchOrSocket instead of sleeping in 1
second increment, but I see that WaitLatchOrSocket() doesn't currently
support waiting for a socket to become writeable, without also waiting
for it to become readable. I wonder how difficult it would be to lift
that restriction.


My recollection is that there was a reason for that, but I don't recall
details any more.

http://git.postgresql.org/pg/commitdiff/e42a21b9e6c9b9e6346a34b62628d48ff2fc6ddf

In my prototype I've changed the API that errors set both
READABLE/WRITABLE. Seems to work....

Andres, would you mind posting the WIP patch you have? That could be a better foundation for this patch.

- Heikki



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