diff options
Diffstat (limited to 'src/backend/storage/lmgr/lock.c')
| -rw-r--r-- | src/backend/storage/lmgr/lock.c | 29 |
1 files changed, 21 insertions, 8 deletions
diff --git a/src/backend/storage/lmgr/lock.c b/src/backend/storage/lmgr/lock.c index b196174f6e1..f48193c8e73 100644 --- a/src/backend/storage/lmgr/lock.c +++ b/src/backend/storage/lmgr/lock.c @@ -499,6 +499,7 @@ LockAcquireExtended(const LOCKTAG *locktag, int partition; LWLockId partitionLock; int status; + bool log_lock = false; if (lockmethodid <= 0 || lockmethodid >= lengthof(LockMethods)) elog(ERROR, "unrecognized lock method: %d", lockmethodid); @@ -580,6 +581,24 @@ LockAcquireExtended(const LOCKTAG *locktag, } /* + * Emit a WAL record if acquisition of this lock needs to be replayed in a + * standby server. Only AccessExclusiveLocks can conflict with lock types + * that read-only transactions can acquire in a standby server. + * + * Make sure this definition matches the one in GetRunningTransactionLocks(). + * + * First we prepare to log, then after lock acquired we issue log record. + */ + if (lockmode >= AccessExclusiveLock && + locktag->locktag_type == LOCKTAG_RELATION && + !RecoveryInProgress() && + XLogStandbyInfoActive()) + { + LogAccessExclusiveLockPrepare(); + log_lock = true; + } + + /* * Otherwise we've got to mess with the shared lock table. */ hashcode = locallock->hashcode; @@ -868,15 +887,9 @@ LockAcquireExtended(const LOCKTAG *locktag, /* * Emit a WAL record if acquisition of this lock need to be replayed in a - * standby server. Only AccessExclusiveLocks can conflict with lock types - * that read-only transactions can acquire in a standby server. - * - * Make sure this definition matches the one GetRunningTransactionLocks(). + * standby server. */ - if (lockmode >= AccessExclusiveLock && - locktag->locktag_type == LOCKTAG_RELATION && - !RecoveryInProgress() && - XLogStandbyInfoActive()) + if (log_lock) { /* * Decode the locktag back to the original values, to avoid sending |