database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2025-11-03 16:53:36 +03:00
Code Activity

Avoid unnecessary zeroing of fields in the Vdbe object when it is allocated.

Browse Source 
FossilOrigin-Name: 1e21bbe836539e64d24857f4faa3d12cd607dc7e
This commit is contained in:
drh
2016-10-01 00:37:50 +00:00
parent cd9af608e1
commit ab3182f7c4
4 changed files with 50 additions and 38 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
src/vdbeaux.c
View File

@@ -21,8 +21,9 @@
Vdbe *sqlite3VdbeCreate(Parse *pParse){
sqlite3 *db = pParse->db;
Vdbe *p;
p = sqlite3DbMallocZero(db, sizeof(Vdbe) );
p = sqlite3DbMallocRaw(db, sizeof(Vdbe) );
if( p==0 ) return 0;
memset(&p->aOp, 0, sizeof(Vdbe)-offsetof(Vdbe,aOp));
p->db = db;
if( db->pVdbe ){
db->pVdbe->pPrev = p;
@@ -1826,7 +1827,7 @@ void sqlite3VdbeRewind(Vdbe *p){
int i;
#endif
assert( p!=0 );
assert( p->magic==VDBE_MAGIC_INIT );
assert( p->magic==VDBE_MAGIC_INIT || p->magic==VDBE_MAGIC_RESET );
/* There should be at least one opcode.
*/
@@ -1953,7 +1954,11 @@ void sqlite3VdbeMakeReady(
pParse->nzVar = 0;
pParse->azVar = 0;
p->explain = pParse->explain;
if( db->mallocFailed==0 ){
if( db->mallocFailed ){
p->nVar = 0;
p->nCursor = 0;
p->nMem = 0;
}else{
p->nCursor = nCursor;
p->nVar = (ynVar)nVar;
initMemArray(p->aVar, nVar, db, MEM_Null);
@@ -2880,7 +2885,7 @@ int sqlite3VdbeReset(Vdbe *p){
}
#endif
p->iCurrentTime = 0;
p->magic = VDBE_MAGIC_INIT;
p->magic = VDBE_MAGIC_RESET;
return p->rc & db->errMask;
}
@@ -2951,7 +2956,9 @@ void sqlite3VdbeClearObject(sqlite3 *db, Vdbe *p){
vdbeFreeOpArray(db, pSub->aOp, pSub->nOp);
sqlite3DbFree(db, pSub);
}
for(i=p->nzVar-1; i>=0; i--) sqlite3DbFree(db, p->azVar[i]);
if( p->magic!=VDBE_MAGIC_INIT ){
for(i=p->nzVar-1; i>=0; i--) sqlite3DbFree(db, p->azVar[i]);
}
sqlite3DbFree(db, p->azVar);
vdbeFreeOpArray(db, p->aOp, p->nOp);
sqlite3DbFree(db, p->aColName);