diff options
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/nodes/execnodes.h | 3 | ||||
| -rw-r--r-- | src/include/storage/lockdefs.h | 2 | ||||
| -rw-r--r-- | src/include/utils/syscache.h | 5 |
3 files changed, 10 insertions, 0 deletions
diff --git a/src/include/nodes/execnodes.h b/src/include/nodes/execnodes.h index 8d1566e8d4c..0cf2b458311 100644 --- a/src/include/nodes/execnodes.h +++ b/src/include/nodes/execnodes.h @@ -524,6 +524,9 @@ typedef struct ResultRelInfo /* for use by copyfrom.c when performing multi-inserts */ struct CopyMultiInsertBuffer *ri_CopyMultiInsertBuffer; + + /* updates do LockTuple() before oldtup read; see README.tuplock */ + bool ri_needLockTagTuple; } ResultRelInfo; /* diff --git a/src/include/storage/lockdefs.h b/src/include/storage/lockdefs.h index f99ad0eff60..c1fffc0964b 100644 --- a/src/include/storage/lockdefs.h +++ b/src/include/storage/lockdefs.h @@ -47,6 +47,8 @@ typedef int LOCKMODE; #define MaxLockMode 8 +/* See README.tuplock section "Locking to write inplace-updated tables" */ +#define InplaceUpdateTupleLock ExclusiveLock /* WAL representation of an AccessExclusiveLock on a table */ typedef struct xl_standby_lock diff --git a/src/include/utils/syscache.h b/src/include/utils/syscache.h index d74a348600c..27c892d24c5 100644 --- a/src/include/utils/syscache.h +++ b/src/include/utils/syscache.h @@ -135,9 +135,14 @@ extern HeapTuple SearchSysCache4(int cacheId, extern void ReleaseSysCache(HeapTuple tuple); +extern HeapTuple SearchSysCacheLocked1(int cacheId, + Datum key1); + /* convenience routines */ extern HeapTuple SearchSysCacheCopy(int cacheId, Datum key1, Datum key2, Datum key3, Datum key4); +extern HeapTuple SearchSysCacheLockedCopy1(int cacheId, + Datum key1); extern bool SearchSysCacheExists(int cacheId, Datum key1, Datum key2, Datum key3, Datum key4); extern Oid GetSysCacheOid(int cacheId, AttrNumber oidcol, |