/*
* Report the last WAL receive location (same format as pg_start_backup etc)
*
* This is useful for determining how much of WAL is guaranteed to be received
* and synced to disk by walreceiver.
*/
Datum
pg_last_xlog_receive_location(PG_FUNCTION_ARGS)
{
XLogRecPtr recptr;
recptr = GetWalRcvWriteRecPtr(NULL, NULL);
if (recptr == 0)
PG_RETURN_NULL();
PG_RETURN_LSN(recptr);
}
/*
* Report the last WAL receive location (same format as pg_start_backup etc)
*
* This is useful for determining how much of WAL is guaranteed to be received
* and synced to disk by walreceiver.
*/
Datum
pg_last_xlog_receive_location(PG_FUNCTION_ARGS)
{
XLogRecPtr recptr;
char location[MAXFNAMELEN];
recptr = GetWalRcvWriteRecPtr(NULL);
if (recptr.xlogid == 0 && recptr.xrecoff == 0)
PG_RETURN_NULL();
snprintf(location, sizeof(location), "%X/%X",
recptr.xlogid, recptr.xrecoff);
PG_RETURN_TEXT_P(cstring_to_text(location));
}
