Assorted bgworker-related comment fixes.
Per gripes by Amit Kapila.
This commit is contained in:
parent
813fb03155
commit
149e38e5ee
|
@ -134,17 +134,15 @@ BackgroundWorkerShmemInit(void)
|
|||
Assert(found);
|
||||
}
|
||||
|
||||
/*
|
||||
* Search the postmaster's backend-private list of RegisteredBgWorker objects
|
||||
* for the one that maps to the given slot number.
|
||||
*/
|
||||
static RegisteredBgWorker *
|
||||
FindRegisteredWorkerBySlotNumber(int slotno)
|
||||
{
|
||||
slist_iter siter;
|
||||
|
||||
/*
|
||||
* Copy contents of worker list into shared memory. Record the
|
||||
* shared memory slot assigned to each worker. This ensures
|
||||
* a 1-to-1 correspondence betwen the postmaster's private list and
|
||||
* the array in shared memory.
|
||||
*/
|
||||
slist_foreach(siter, &BackgroundWorkerList)
|
||||
{
|
||||
RegisteredBgWorker *rw;
|
||||
|
@ -158,7 +156,7 @@ FindRegisteredWorkerBySlotNumber(int slotno)
|
|||
}
|
||||
|
||||
/*
|
||||
* Notice changes to shared_memory made by other backends. This code
|
||||
* Notice changes to shared memory made by other backends. This code
|
||||
* runs in the postmaster, so we must be very careful not to assume that
|
||||
* shared memory contents are sane. Otherwise, a rogue backend could take
|
||||
* out the postmaster.
|
||||
|
|
|
@ -6,11 +6,13 @@
|
|||
* including normal transactions.
|
||||
*
|
||||
* Any external module loaded via shared_preload_libraries can register a
|
||||
* worker. Then, at the appropriate time, the worker process is forked from
|
||||
* the postmaster and runs the user-supplied "main" function. This code may
|
||||
* connect to a database and run transactions. Once started, it stays active
|
||||
* until shutdown or crash. The process should sleep during periods of
|
||||
* inactivity.
|
||||
* worker. Workers can also be registered dynamically at runtime. In either
|
||||
* case, the worker process is forked from the postmaster and runs the
|
||||
* user-supplied "main" function. This code may connect to a database and
|
||||
* run transactions. Once started, it stays active until shutdown or crash;
|
||||
* unless the restart interval is declared as BGW_NEVER_RESTART and the
|
||||
* process exits with a return code of 1; workers that do this are
|
||||
* automatically unregistered by the postmaster.
|
||||
*
|
||||
* If the fork() call fails in the postmaster, it will try again later. Note
|
||||
* that the failure can only be transient (fork failure due to high load,
|
||||
|
|
Loading…
Reference in New Issue