diff options
| author | drh <> | 2022-01-03 01:43:28 +0000 |
|---|---|---|
| committer | drh <> | 2022-01-03 01:43:28 +0000 |
| commit | b248668bc9353ce90915b653fbf592d748ccb9d6 (patch) | |
| tree | e87f559bd1fbfc0c9fd10763c66593b568701ba5 /src/vdbeInt.h | |
| parent | 80d99e19b69814b7a9bebcc792fc9b7e959bbd0e (diff) | |
| download | sqlite-b248668bc9353ce90915b653fbf592d748ccb9d6.tar.gz sqlite-b248668bc9353ce90915b653fbf592d748ccb9d6.zip | |
Small performance and size optimization to allocateCursor().
FossilOrigin-Name: 23f042669aff535afa6ee9de367656848d01e90a1c9dab9359fa938a615b4195
Diffstat (limited to 'src/vdbeInt.h')
| -rw-r--r-- | src/vdbeInt.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/src/vdbeInt.h b/src/vdbeInt.h index 481c93ddb..376c9edac 100644 --- a/src/vdbeInt.h +++ b/src/vdbeInt.h @@ -75,7 +75,7 @@ typedef struct AuxData AuxData; typedef struct VdbeCursor VdbeCursor; struct VdbeCursor { u8 eCurType; /* One of the CURTYPE_* values above */ - i8 iDb; /* Index of cursor database in db->aDb[] (or -1) */ + i8 iDb; /* Index of cursor database in db->aDb[] */ u8 nullRow; /* True if pointing to a row with no data */ u8 deferredMoveto; /* A call to sqlite3BtreeMoveto() is needed */ u8 isTable; /* True for rowid tables. False for indexes */ @@ -88,9 +88,11 @@ struct VdbeCursor { Bool isOrdered:1; /* True if the table is not BTREE_UNORDERED */ Bool hasBeenDuped:1; /* This cursor was source or target of OP_OpenDup */ u16 seekHit; /* See the OP_SeekHit and OP_IfNoHope opcodes */ - Btree *pBtx; /* Separate file holding temporary table */ + union { /* pBtx for isEphermeral. pAltMap otherwise */ + Btree *pBtx; /* Separate file holding temporary table */ + u32 *aAltMap; /* Mapping from table to index column numbers */ + } ub; i64 seqCount; /* Sequence counter */ - u32 *aAltMap; /* Mapping from table to index column numbers */ /* Cached OP_Column parse information is only valid if cacheStatus matches ** Vdbe.cacheCtr. Vdbe.cacheCtr will never take on the value of |