871     Btree *pBt = db->aDb[i].pBt;  in sqlite3_db_release_memory()  local
872     if( pBt ){  in sqlite3_db_release_memory()
873       Pager *pPager = sqlite3BtreePager(pBt);  in sqlite3_db_release_memory()
897     Btree *pBt = db->aDb[i].pBt;  in sqlite3_db_cacheflush()  local
898     if( pBt && sqlite3BtreeTxnState(pBt)==SQLITE_TXN_WRITE ){  in sqlite3_db_cacheflush()
899       Pager *pPager = sqlite3BtreePager(pBt);  in sqlite3_db_cacheflush()
1193     Btree *pBt = db->aDb[j].pBt;  in connectionIsBusy()  local
1194     if( pBt && sqlite3BtreeIsInBackup(pBt) ) return 1;  in connectionIsBusy()
1274     Btree *pBt = db->aDb[iDb].pBt;  in sqlite3_txn_state()  local
1275     int x = pBt!=0 ? sqlite3BtreeTxnState(pBt) : SQLITE_TXN_NONE;  in sqlite3_txn_state()
1334     if( pDb->pBt ){  in sqlite3LeaveMutexAndCloseZombie()
1335       sqlite3BtreeClose(pDb->pBt);  in sqlite3LeaveMutexAndCloseZombie()
1336       pDb->pBt = 0;  in sqlite3LeaveMutexAndCloseZombie()
1443     Btree *p = db->aDb[i].pBt;  in sqlite3RollbackAll()
2523       rc = sqlite3BtreeCheckpoint(db->aDb[i].pBt, eMode, pnLog, pnCkpt);  in sqlite3Checkpoint()
3406   rc = sqlite3BtreeOpen(db->pVfs, zOpen, db, &db->aDb[0].pBt, 0,  in openDatabase()
3415   sqlite3BtreeEnter(db->aDb[0].pBt);  in openDatabase()
3416   db->aDb[0].pSchema = sqlite3SchemaGet(db, db->aDb[0].pBt);  in openDatabase()
3420   sqlite3BtreeLeave(db->aDb[0].pBt);  in openDatabase()
3474   sqlite3PagerLockingMode(sqlite3BtreePager(db->aDb[0].pBt),  in openDatabase()
4396       *pn = sqlite3BtreeSeekCount(db->aDb->pBt);  in sqlite3_test_control()
4651   return iDb<0 ? 0 : db->aDb[iDb].pBt;  in sqlite3DbNameToBtree()
4677   Btree *pBt;  in sqlite3_db_filename()  local
4684   pBt = sqlite3DbNameToBtree(db, zDbName);  in sqlite3_db_filename()
4685   return pBt ? sqlite3BtreeGetFilename(pBt) : 0;  in sqlite3_db_filename()
4693   Btree *pBt;  in sqlite3_db_readonly()  local
4700   pBt = sqlite3DbNameToBtree(db, zDbName);  in sqlite3_db_readonly()
4701   return pBt ? sqlite3BtreeIsReadonly(pBt) : -1;  in sqlite3_db_readonly()
4727       Btree *pBt = db->aDb[iDb].pBt;  in sqlite3_snapshot_get()  local
4728       if( SQLITE_TXN_WRITE!=sqlite3BtreeTxnState(pBt) ){  in sqlite3_snapshot_get()
4729         rc = sqlite3BtreeBeginTrans(pBt, 0, 0);  in sqlite3_snapshot_get()
4731           rc = sqlite3PagerSnapshotGet(sqlite3BtreePager(pBt), ppSnapshot);  in sqlite3_snapshot_get()
4763       Btree *pBt = db->aDb[iDb].pBt;  in sqlite3_snapshot_open()  local
4764       if( sqlite3BtreeTxnState(pBt)!=SQLITE_TXN_WRITE ){  in sqlite3_snapshot_open()
4765         Pager *pPager = sqlite3BtreePager(pBt);  in sqlite3_snapshot_open()
4767         if( sqlite3BtreeTxnState(pBt)!=SQLITE_TXN_NONE ){  in sqlite3_snapshot_open()
4772               rc = sqlite3BtreeCommit(pBt);  in sqlite3_snapshot_open()
4782           rc = sqlite3BtreeBeginTrans(pBt, 0, 0);  in sqlite3_snapshot_open()
4815     Btree *pBt = db->aDb[iDb].pBt;  in sqlite3_snapshot_recover()  local
4816     if( SQLITE_TXN_NONE==sqlite3BtreeTxnState(pBt) ){  in sqlite3_snapshot_recover()
4817       rc = sqlite3BtreeBeginTrans(pBt, 0, 0);  in sqlite3_snapshot_recover()
4819         rc = sqlite3PagerSnapshotRecover(sqlite3BtreePager(pBt));  in sqlite3_snapshot_recover()
4820         sqlite3BtreeCommit(pBt);  in sqlite3_snapshot_recover()