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Diffstat (limited to 'src/backend/storage/lmgr/lock.c')
-rw-r--r--src/backend/storage/lmgr/lock.c35
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;