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| author | Bruce Momjian <bruce@momjian.us> | 2002-08-29 21:02:12 +0000 |
|---|---|---|
| committer | Bruce Momjian <bruce@momjian.us> | 2002-08-29 21:02:12 +0000 |
| commit | 626eca697cf4470c44cb76f0603302201538c47e (patch) | |
| tree | 8acf0b4c0b80977aa189ad75a0434b7f78af80d6 /src/include/storage/sinvaladt.h | |
| parent | 1761990e385c7d761184425c95c8045303b81084 (diff) | |
| download | postgresql-626eca697cf4470c44cb76f0603302201538c47e.tar.gz | |
This patch reserves the last superuser_reserved_connections slots for
connections by the superuser only.
This patch replaces the last patch I sent a couple of days ago.
It closes a connection that has not been authorised by a superuser if it would
leave less than the GUC variable ReservedBackends
(superuser_reserved_connections in postgres.conf) backend process slots free
in the SISeg. This differs to the first patch which only reserved the last
ReservedBackends slots in the procState array. This has made the free slot
test more expensive due to the use of a lock.
After thinking about a comment on the first patch I've also made it a fatal
error if the number of reserved slots is not less than the maximum number of
connections.
Nigel J. Andrews
Diffstat (limited to 'src/include/storage/sinvaladt.h')
| -rw-r--r-- | src/include/storage/sinvaladt.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/include/storage/sinvaladt.h b/src/include/storage/sinvaladt.h index 3e95342c9f..39c895026b 100644 --- a/src/include/storage/sinvaladt.h +++ b/src/include/storage/sinvaladt.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $Id: sinvaladt.h,v 1.32 2002/06/20 20:29:52 momjian Exp $ + * $Id: sinvaladt.h,v 1.33 2002/08/29 21:02:12 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -85,6 +85,7 @@ typedef struct SISeg int lastBackend; /* index of last active procState entry, * +1 */ int maxBackends; /* size of procState array */ + int freeBackends; /* number of empty procState slots */ /* * Circular buffer holding shared-inval messages |