28   assert( p->locked==0 );  in lockBtreeMutex()
34   p->locked = 1;  in lockBtreeMutex()
43   assert( p->locked==1 );  in unlockBtreeMutex()
49   p->locked = 0;  in unlockBtreeMutex()
83   assert( !p->locked || p->wantToLock>0 );  in sqlite3BtreeEnter()
91   assert( (p->locked==0 && p->sharable) || p->pBt->db==p->db );  in sqlite3BtreeEnter()
95   if( p->locked ) return;  in sqlite3BtreeEnter()
114     p->locked = 1;  in btreeLockCarefully()
126     assert( !pLater->locked || pLater->wantToLock>0 );  in btreeLockCarefully()
127     if( pLater->locked ){  in btreeLockCarefully()
162   assert( p->sharable==0 || p->locked==0 || p->wantToLock>0 );  in sqlite3BtreeHoldsMutex()
163   assert( p->sharable==0 || p->locked==0 || p->db==p->pBt->db );  in sqlite3BtreeHoldsMutex()
164   assert( p->sharable==0 || p->locked==0 || sqlite3_mutex_held(p->pBt->mutex) );  in sqlite3BtreeHoldsMutex()
165   assert( p->sharable==0 || p->locked==0 || sqlite3_mutex_held(p->db->mutex) );  in sqlite3BtreeHoldsMutex()
167   return (p->sharable==0 || p->locked);  in sqlite3BtreeHoldsMutex()
262   return p->sharable==0 || p->locked==1;  in sqlite3SchemaMutexHeld()