1136   const struct sqlite3_io_methods *pMethods;  /* Methods for an open file */  member
14391   if( pId->pMethods ){  in sqlite3OsClose()
14392     rc = pId->pMethods->xClose(pId);  in sqlite3OsClose()
14393     pId->pMethods = 0;  in sqlite3OsClose()
14399   return id->pMethods->xRead(id, pBuf, amt, offset);  in sqlite3OsRead()
14403   return id->pMethods->xWrite(id, pBuf, amt, offset);  in sqlite3OsWrite()
14406   return id->pMethods->xTruncate(id, size);  in sqlite3OsTruncate()
14410   return id->pMethods->xSync(id, flags);  in sqlite3OsSync()
14414   return id->pMethods->xFileSize(id, pSize);  in sqlite3OsFileSize()
14418   return id->pMethods->xLock(id, lockType);  in sqlite3OsLock()
14421   return id->pMethods->xUnlock(id, lockType);  in sqlite3OsUnlock()
14425   return id->pMethods->xCheckReservedLock(id, pResOut);  in sqlite3OsCheckReservedLock()
14428   return id->pMethods->xFileControl(id, op, pArg);  in sqlite3OsFileControl()
14431   int (*xSectorSize)(sqlite3_file*) = id->pMethods->xSectorSize;  in sqlite3OsSectorSize()
14435   return id->pMethods->xDeviceCharacteristics(id);  in sqlite3OsDeviceCharacteristics()
14438   return id->pMethods->xShmLock(id, offset, n, flags);  in sqlite3OsShmLock()
14441   id->pMethods->xShmBarrier(id);  in sqlite3OsShmBarrier()
14444   return id->pMethods->xShmUnmap(id, deleteFlag);  in sqlite3OsShmUnmap()
14453   return id->pMethods->xShmMap(id, iPage, pgsz, bExtend, pp);  in sqlite3OsShmMap()
14474   assert( rc==SQLITE_OK || pFile->pMethods==0 );  in sqlite3OsOpen()
28994     const sqlite3_io_methods *pMethods;   /* Appropriate locking method */
29018         return aMap[i].pMethods;
38312 #define isOpen(pFd) ((pFd)->pMethods)
40274     pPager->fd->pMethods==0 ||
44203   const sqlite3_io_methods *pMethods = pPager->fd->pMethods;
44204   return pPager->exclusiveMode || (pMethods->iVersion>=2 && pMethods->xShmMap);
71386   if( p->pMethods!=&JournalFileMethods ){
71652   return pJfd->pMethods==&MemJournalMethods;
112831       }else if( fd->pMethods ){