Re: Snapshot management, final

Alvaro Herrera wrote:

> FWIW I noticed yesterday after going to bed that SnapshotContext serves
> no useful purpose -- we can just remove it and store snaps in
> TopTransactionContext.

... which is what the attached patch does.

--
Alvaro Herrera                                http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support