/*
** Close an existing SQLite database
*/
void sqlite_close(sqlite *db){
HashElem *i;
int j;
db->want_to_close = 1;
if( sqliteSafetyCheck(db) || sqliteSafetyOn(db) ){
/* printf("DID NOT CLOSE\n"); fflush(stdout); */
return;
}
db->magic = SQLITE_MAGIC_CLOSED;
for(j=0; j<db->nDb; j++){
struct Db *pDb = &db->aDb[j];
if( pDb->pBt ){
sqliteBtreeClose(pDb->pBt);
pDb->pBt = 0;
}
}
sqliteResetInternalSchema(db, 0);
assert( db->nDb<=2 );
assert( db->aDb==db->aDbStatic );
for(i=sqliteHashFirst(&db->aFunc); i; i=sqliteHashNext(i)){
FuncDef *pFunc, *pNext;
for(pFunc = (FuncDef*)sqliteHashData(i); pFunc; pFunc=pNext){
pNext = pFunc->pNext;
sqliteFree(pFunc);
}
}
sqliteHashClear(&db->aFunc);
sqliteFree(db);
}
/*
* Close the supplied Rbtree. Delete everything associated with it.
*/
static int memRbtreeClose(Rbtree* tree)
{
HashElem *p;
memRbtreeCommit(tree);
while( (p=sqliteHashFirst(&tree->tblHash))!=0 ){
tree->eTransState = TRANS_ROLLBACK;
memRbtreeDropTable(tree, sqliteHashKeysize(p));
}
sqliteHashClear(&tree->tblHash);
sqliteFree(tree);
return SQLITE_OK;
}
/*
** Reset an Agg structure. Delete all its contents.
**
** For installable aggregate functions, if the step function has been
** called, make sure the finalizer function has also been called. The
** finalizer might need to free memory that was allocated as part of its
** private context. If the finalizer has not been called yet, call it
** now.
*/
void sqliteVdbeAggReset(Agg *pAgg){
int i;
HashElem *p;
for(p = sqliteHashFirst(&pAgg->hash); p; p = sqliteHashNext(p)){
AggElem *pElem = sqliteHashData(p);
assert( pAgg->apFunc!=0 );
for(i=0; i<pAgg->nMem; i++){
Mem *pMem = &pElem->aMem[i];
if( pAgg->apFunc[i] && (pMem->flags & MEM_AggCtx)!=0 ){
sqlite_func ctx;
ctx.pFunc = pAgg->apFunc[i];
ctx.s.flags = MEM_Null;
ctx.pAgg = pMem->z;
ctx.cnt = pMem->i;
ctx.isStep = 0;
ctx.isError = 0;
(*pAgg->apFunc[i]->xFinalize)(&ctx);
if( pMem->z!=0 && pMem->z!=pMem->zShort ){
sqliteFree(pMem->z);
}
if( ctx.s.flags & MEM_Dyn ){
sqliteFree(ctx.s.z);
}
}else if( pMem->flags & MEM_Dyn ){
sqliteFree(pMem->z);
}
}
sqliteFree(pElem);
}
sqliteHashClear(&pAgg->hash);
sqliteFree(pAgg->apFunc);
pAgg->apFunc = 0;
pAgg->pCurrent = 0;
pAgg->pSearch = 0;
pAgg->nMem = 0;
}
/*
** Clean up the VM after execution.
**
** This routine will automatically close any cursors, lists, and/or
** sorters that were left open. It also deletes the values of
** variables in the azVariable[] array.
*/
static void Cleanup(Vdbe *p){
int i;
if( p->aStack ){
Mem *pTos = p->pTos;
while( pTos>=p->aStack ){
if( pTos->flags & MEM_Dyn ){
sqliteFree(pTos->z);
}
pTos--;
}
p->pTos = pTos;
}
closeAllCursors(p);
if( p->aMem ){
for(i=0; i<p->nMem; i++){
if( p->aMem[i].flags & MEM_Dyn ){
sqliteFree(p->aMem[i].z);
}
}
}
sqliteFree(p->aMem);
p->aMem = 0;
p->nMem = 0;
if( p->pList ){
sqliteVdbeKeylistFree(p->pList);
p->pList = 0;
}
sqliteVdbeSorterReset(p);
if( p->pFile ){
if( p->pFile!=stdin ) fclose(p->pFile);
p->pFile = 0;
}
if( p->azField ){
sqliteFree(p->azField);
p->azField = 0;
}
p->nField = 0;
if( p->zLine ){
sqliteFree(p->zLine);
p->zLine = 0;
}
p->nLineAlloc = 0;
sqliteVdbeAggReset(&p->agg);
if( p->aSet ){
for(i=0; i<p->nSet; i++){
sqliteHashClear(&p->aSet[i].hash);
}
}
sqliteFree(p->aSet);
p->aSet = 0;
p->nSet = 0;
if( p->keylistStack ){
int ii;
for(ii = 0; ii < p->keylistStackDepth; ii++){
sqliteVdbeKeylistFree(p->keylistStack[ii]);
}
sqliteFree(p->keylistStack);
p->keylistStackDepth = 0;
p->keylistStack = 0;
}
sqliteFree(p->contextStack);
p->contextStack = 0;
sqliteFree(p->zErrMsg);
p->zErrMsg = 0;
}
