Обсуждение: pgsql: Re-revert stats collector latch changes.

Re-revert stats collector latch changes.

This reverts commit cb2f2873d6b81ad7f0a9733ba738bfac0746fb7b, restoring
the latch-ified stats collector logic.  We'll soon see if this works any
better on the Windows buildfarm machines.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/966970ed636586b80739c0d21aec7561f0fafedd

Modified Files
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src/backend/postmaster/pgstat.c |  185 ++++++++++++++------------------------
1 files changed, 68 insertions(+), 117 deletions(-)