diff options
Diffstat (limited to 'src/backend/storage/lmgr/lock.c')
-rw-r--r-- | src/backend/storage/lmgr/lock.c | 35 |
1 files changed, 17 insertions, 18 deletions
diff --git a/src/backend/storage/lmgr/lock.c b/src/backend/storage/lmgr/lock.c index 0400a507779..6dbc41dae70 100644 --- a/src/backend/storage/lmgr/lock.c +++ b/src/backend/storage/lmgr/lock.c @@ -377,19 +377,17 @@ static void GetSingleProcBlockerStatusData(PGPROC *blocked_proc, /* - * InitLocks -- Initialize the lock manager's data structures. + * Initialize the lock manager's shmem data structures. * - * This is called from CreateSharedMemoryAndSemaphores(), which see for - * more comments. In the normal postmaster case, the shared hash tables - * are created here, as well as a locallock hash table that will remain - * unused and empty in the postmaster itself. Backends inherit the pointers - * to the shared tables via fork(), and also inherit an image of the locallock - * hash table, which they proceed to use. In the EXEC_BACKEND case, each - * backend re-executes this code to obtain pointers to the already existing - * shared hash tables and to create its locallock hash table. + * This is called from CreateSharedMemoryAndSemaphores(), which see for more + * comments. In the normal postmaster case, the shared hash tables are + * created here, and backends inherit pointers to them via fork(). In the + * EXEC_BACKEND case, each backend re-executes this code to obtain pointers to + * the already existing shared hash tables. In either case, each backend must + * also call InitLockManagerAccess() to create the locallock hash table. */ void -InitLocks(void) +LockManagerShmemInit(void) { HASHCTL info; long init_table_size, @@ -444,18 +442,19 @@ InitLocks(void) sizeof(FastPathStrongRelationLockData), &found); if (!found) SpinLockInit(&FastPathStrongRelationLocks->mutex); +} +/* + * Initialize the lock manager's backend-private data structures. + */ +void +InitLockManagerAccess(void) +{ /* * Allocate non-shared hash table for LOCALLOCK structs. This stores lock * counts and resource owner information. - * - * The non-shared table could already exist in this process (this occurs - * when the postmaster is recreating shared memory after a backend crash). - * If so, delete and recreate it. (We could simply leave it, since it - * ought to be empty in the postmaster, but for safety let's zap it.) */ - if (LockMethodLocalHash) - hash_destroy(LockMethodLocalHash); + HASHCTL info; info.keysize = sizeof(LOCALLOCKTAG); info.entrysize = sizeof(LOCALLOCK); @@ -3571,7 +3570,7 @@ PostPrepare_Locks(TransactionId xid) * Estimate shared-memory space used for lock tables */ Size -LockShmemSize(void) +LockManagerShmemSize(void) { Size size = 0; long max_table_size; |