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| author | Robert Haas <rhaas@postgresql.org> | 2013-07-04 11:11:56 -0400 |
|---|---|---|
| committer | Robert Haas <rhaas@postgresql.org> | 2013-07-04 11:15:12 -0400 |
| commit | 5cbe935c9d6046f5600ff2e083b4bae6ee1f4aa2 (patch) | |
| tree | 8686a35701f0f337c1b5fe785668dd35b6f5cdc9 | |
| parent | 0d1795680d57d5997c244410e4d8a2eca22ae903 (diff) | |
| download | postgresql-5cbe935c9d6046f5600ff2e083b4bae6ee1f4aa2.tar.gz postgresql-5cbe935c9d6046f5600ff2e083b4bae6ee1f4aa2.zip | |
docs: Clarify flag dependencies for background workers.
BGWORKER_BACKEND_DATABASE_CONNECTION can only be used if
BGWORKER_SHMEM_ACCESS is also used.
Michael Paquier, with some tweaks by me.
| -rw-r--r-- | doc/src/sgml/bgworker.sgml | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/doc/src/sgml/bgworker.sgml b/doc/src/sgml/bgworker.sgml index 1151161a848..b0dde7564d8 100644 --- a/doc/src/sgml/bgworker.sgml +++ b/doc/src/sgml/bgworker.sgml @@ -64,7 +64,10 @@ typedef struct BackgroundWorker <literal>BGWORKER_SHMEM_ACCESS</literal> (requesting shared memory access) and <literal>BGWORKER_BACKEND_DATABASE_CONNECTION</literal> (requesting the ability to establish a database connection, through which it can later run - transactions and queries). + transactions and queries). A background worker using + <literal>BGWORKER_BACKEND_DATABASE_CONNECTION</literal> to connect to + a database must also attach shared memory using + <literal>BGWORKER_SHMEM_ACCESS</literal>, or worker start-up will fail. </para> <para> |