diff options
Diffstat (limited to 'src/backend/postmaster/autovacuum.c')
| -rw-r--r-- | src/backend/postmaster/autovacuum.c | 46 |
1 files changed, 23 insertions, 23 deletions
diff --git a/src/backend/postmaster/autovacuum.c b/src/backend/postmaster/autovacuum.c index 3d57c453772..4ff5d877115 100644 --- a/src/backend/postmaster/autovacuum.c +++ b/src/backend/postmaster/autovacuum.c @@ -21,21 +21,21 @@ * There is an autovacuum shared memory area, where the launcher stores * information about the database it wants vacuumed. When it wants a new * worker to start, it sets a flag in shared memory and sends a signal to the - * postmaster. Then postmaster knows nothing more than it must start a worker; - * so it forks a new child, which turns into a worker. This new process + * postmaster. Then postmaster knows nothing more than it must start a worker; + * so it forks a new child, which turns into a worker. This new process * connects to shared memory, and there it can inspect the information that the * launcher has set up. * * If the fork() call fails in the postmaster, it sets a flag in the shared * memory area, and sends a signal to the launcher. The launcher, upon * noticing the flag, can try starting the worker again by resending the - * signal. Note that the failure can only be transient (fork failure due to + * signal. Note that the failure can only be transient (fork failure due to * high load, memory pressure, too many processes, etc); more permanent * problems, like failure to connect to a database, are detected later in the * worker and dealt with just by having the worker exit normally. The launcher * will launch a new worker again later, per schedule. * - * When the worker is done vacuuming it sends SIGUSR2 to the launcher. The + * When the worker is done vacuuming it sends SIGUSR2 to the launcher. The * launcher then wakes up and is able to launch another worker, if the schedule * is so tight that a new worker is needed immediately. At this time the * launcher can also balance the settings for the various remaining workers' @@ -228,7 +228,7 @@ typedef enum /*------------- * The main autovacuum shmem struct. On shared memory we store this main - * struct and the array of WorkerInfo structs. This struct keeps: + * struct and the array of WorkerInfo structs. This struct keeps: * * av_signal set by other processes to indicate various conditions * av_launcherpid the PID of the autovacuum launcher @@ -410,7 +410,7 @@ AutoVacLauncherMain(int argc, char *argv[]) /* * If possible, make this process a group leader, so that the postmaster - * can signal any child processes too. (autovacuum probably never has any + * can signal any child processes too. (autovacuum probably never has any * child processes, but for consistency we make all postmaster child * processes do this.) */ @@ -420,7 +420,7 @@ AutoVacLauncherMain(int argc, char *argv[]) #endif /* - * Set up signal handlers. We operate on databases much like a regular + * Set up signal handlers. We operate on databases much like a regular * backend, so we use the same signal handling. See equivalent code in * tcop/postgres.c. */ @@ -528,7 +528,7 @@ AutoVacLauncherMain(int argc, char *argv[]) /* * Force zero_damaged_pages OFF in the autovac process, even if it is set - * in postgresql.conf. We don't really want such a dangerous option being + * in postgresql.conf. We don't really want such a dangerous option being * applied non-interactively. */ SetConfigOption("zero_damaged_pages", "false", PGC_SUSET, PGC_S_OVERRIDE); @@ -862,7 +862,7 @@ launcher_determine_sleep(bool canlaunch, bool recursing, struct timeval * nap) * this the "new" database, because when the database was already present on * the list, we expect that this function is not called at all). The * preexisting list, if any, will be used to preserve the order of the - * databases in the autovacuum_naptime period. The new database is put at the + * databases in the autovacuum_naptime period. The new database is put at the * end of the interval. The actual values are not saved, which should not be * much of a problem. */ @@ -1075,7 +1075,7 @@ db_comparator(const void *a, const void *b) * * Bare-bones procedure for starting an autovacuum worker from the launcher. * It determines what database to work on, sets up shared memory stuff and - * signals postmaster to start the worker. It fails gracefully if invoked when + * signals postmaster to start the worker. It fails gracefully if invoked when * autovacuum_workers are already active. * * Return value is the OID of the database that the worker is going to process, @@ -1328,7 +1328,7 @@ launch_worker(TimestampTz now) /* * Called from postmaster to signal a failure to fork a process to become - * worker. The postmaster should kill(SIGUSR2) the launcher shortly + * worker. The postmaster should kill(SIGUSR2) the launcher shortly * after calling this function. */ void @@ -1462,7 +1462,7 @@ AutoVacWorkerMain(int argc, char *argv[]) /* * If possible, make this process a group leader, so that the postmaster - * can signal any child processes too. (autovacuum probably never has any + * can signal any child processes too. (autovacuum probably never has any * child processes, but for consistency we make all postmaster child * processes do this.) */ @@ -1472,7 +1472,7 @@ AutoVacWorkerMain(int argc, char *argv[]) #endif /* - * Set up signal handlers. We operate on databases much like a regular + * Set up signal handlers. We operate on databases much like a regular * backend, so we use the same signal handling. See equivalent code in * tcop/postgres.c. * @@ -1523,7 +1523,7 @@ AutoVacWorkerMain(int argc, char *argv[]) EmitErrorReport(); /* - * We can now go away. Note that because we called InitProcess, a + * We can now go away. Note that because we called InitProcess, a * callback was registered to do ProcKill, which will clean up * necessary state. */ @@ -1537,7 +1537,7 @@ AutoVacWorkerMain(int argc, char *argv[]) /* * Force zero_damaged_pages OFF in the autovac process, even if it is set - * in postgresql.conf. We don't really want such a dangerous option being + * in postgresql.conf. We don't really want such a dangerous option being * applied non-interactively. */ SetConfigOption("zero_damaged_pages", "false", PGC_SUSET, PGC_S_OVERRIDE); @@ -1663,7 +1663,7 @@ FreeWorkerInfo(int code, Datum arg) /* * Wake the launcher up so that he can launch a new worker immediately * if required. We only save the launcher's PID in local memory here; - * the actual signal will be sent when the PGPROC is recycled. Note + * the actual signal will be sent when the PGPROC is recycled. Note * that we always do this, so that the launcher can rebalance the cost * limit setting of the remaining workers. * @@ -1777,7 +1777,7 @@ autovac_balance_cost(void) /* * We put a lower bound of 1 on the cost_limit, to avoid division- - * by-zero in the vacuum code. Also, in case of roundoff trouble + * by-zero in the vacuum code. Also, in case of roundoff trouble * in these calculations, let's be sure we don't ever set * cost_limit to more than the base value. */ @@ -1824,7 +1824,7 @@ get_database_list(void) /* * Start a transaction so we can access pg_database, and get a snapshot. * We don't have a use for the snapshot itself, but we're interested in - * the secondary effect that it sets RecentGlobalXmin. (This is critical + * the secondary effect that it sets RecentGlobalXmin. (This is critical * for anything that reads heap pages, because HOT may decide to prune * them even if the process doesn't attempt to modify any tuples.) */ @@ -2241,14 +2241,14 @@ do_autovacuum(void) } /* - * Ok, good to go. Store the table in shared memory before releasing + * Ok, good to go. Store the table in shared memory before releasing * the lock so that other workers don't vacuum it concurrently. */ MyWorkerInfo->wi_tableoid = relid; LWLockRelease(AutovacuumScheduleLock); /* - * Remember the prevailing values of the vacuum cost GUCs. We have to + * Remember the prevailing values of the vacuum cost GUCs. We have to * restore these at the bottom of the loop, else we'll compute wrong * values in the next iteration of autovac_balance_cost(). */ @@ -2277,7 +2277,7 @@ do_autovacuum(void) /* * Save the relation name for a possible error message, to avoid a - * catalog lookup in case of an error. If any of these return NULL, + * catalog lookup in case of an error. If any of these return NULL, * then the relation has been dropped since last we checked; skip it. * Note: they must live in a long-lived memory context because we call * vacuum and analyze in different transactions. @@ -2689,7 +2689,7 @@ relation_needs_vacanalyze(Oid relid, { /* * Skip a table not found in stat hash, unless we have to force vacuum - * for anti-wrap purposes. If it's not acted upon, there's no need to + * for anti-wrap purposes. If it's not acted upon, there's no need to * vacuum it. */ *dovacuum = force_vacuum; @@ -2891,7 +2891,7 @@ AutoVacuumShmemInit(void) * Refresh pgstats data for an autovacuum process * * Cause the next pgstats read operation to obtain fresh data, but throttle - * such refreshing in the autovacuum launcher. This is mostly to avoid + * such refreshing in the autovacuum launcher. This is mostly to avoid * rereading the pgstats files too many times in quick succession when there * are many databases. * |