671   sqlite3_file *pBase = p->pBaseRead;  in asyncRead()  local
685   if( pBase->pMethods ){  in asyncRead()
687     rc = pBase->pMethods->xFileSize(pBase, &filesize);  in asyncRead()
693       rc = pBase->pMethods->xRead(pBase, zOut, (int)nRead, iOffset);  in asyncRead()
768   sqlite3_file *pBase;  in asyncFileSize()  local
777   pBase = p->pBaseRead;  in asyncFileSize()
778   if( pBase->pMethods ){  in asyncFileSize()
779     rc = pBase->pMethods->xFileSize(pBase, &s);  in asyncFileSize()
1350     sqlite3_file *pBase = 0;  in asyncWriterThread()  local
1391       pBase = p->pFileData->pBaseWrite;  in asyncWriterThread()
1395         (pBase->pMethods && (p->op==ASYNC_SYNC || p->op==ASYNC_WRITE) )   in asyncWriterThread()
1400       if( !pBase->pMethods ){  in asyncWriterThread()
1401         pBase = p->pFileData->pBaseRead;  in asyncWriterThread()
1410         assert( pBase );  in asyncWriterThread()
1413         rc = pBase->pMethods->xWrite(pBase, (void *)(p->zBuf), p->nByte, p->iOffset);  in asyncWriterThread()
1417         assert( pBase );  in asyncWriterThread()
1419         rc = pBase->pMethods->xSync(pBase, p->nByte);  in asyncWriterThread()
1423         assert( pBase );  in asyncWriterThread()
1426         rc = pBase->pMethods->xTruncate(pBase, p->iOffset);  in asyncWriterThread()