diff options
Diffstat (limited to 'doc/src/sgml/bgworker.sgml')
| -rw-r--r-- | doc/src/sgml/bgworker.sgml | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/doc/src/sgml/bgworker.sgml b/doc/src/sgml/bgworker.sgml index ef28f725114..33ff5269516 100644 --- a/doc/src/sgml/bgworker.sgml +++ b/doc/src/sgml/bgworker.sgml @@ -58,6 +58,7 @@ typedef struct BackgroundWorker char bgw_library_name[BGW_MAXLEN]; /* only if bgw_main is NULL */ char bgw_function_name[BGW_MAXLEN]; /* only if bgw_main is NULL */ Datum bgw_main_arg; + char bgw_extra[BGW_EXTRALEN]; int bgw_notify_pid; } BackgroundWorker; </programlisting> @@ -137,6 +138,13 @@ typedef struct BackgroundWorker </para> <para> + <structfield>bgw_extra</structfield> can contain extra data to be passed + to the background worker. Unlike <structfield>bgw_main_arg</>, this data + is not passed as an argument to the worker's main function, but it can be + accessed via <literal>MyBgworkerEntry</literal>, as discussed above. + </para> + + <para> <structfield>bgw_notify_pid</structfield> is the PID of a PostgreSQL backend process to which the postmaster should send <literal>SIGUSR1</> when the process is started or exits. It should be 0 for workers registered |