There have been some inquries on the list into executing pre-generated bytecode. If you have a fixed schema you may be able to create a valid sqlite3_stmt pointer from bytecode stored somewhere.
-----Ursprüngliche Nachricht----- Von: sqlite-users [mailto:sqlite-users-boun...@mailinglists.sqlite.org] Im Auftrag von dave Gesendet: Sonntag, 15. April 2018 20:55 An: sqlite-users@mailinglists.sqlite.org Betreff: [EXTERNAL] [sqlite] kooky thought: a vm-only build (for embedded). feasible? I had a stray thought, and wanted to ask if it's been thunk before,and if so what is the thinking? Or just for commentary. I have been building a system, part of which uses sqlite and virtual tables. This is working great in a desktop/mobile environment. However, eventually one day, I will want to migrate aspects of the product to deeply embedded systems (e.g. something like an STM32F4 class chip), and am thinking about size -- both code and RAM. I know about the various compile switches that can turn off various features, but I wonder if I can really strip it down further by eliminating parsing, query planning, etc, altogether, and only support the virtual machine. I do need virtual tables, though. In my particular use-case, I only need read access -- no create or update. The thinking being that I can build queries offline and compile them into the p-code (or whatever it's called), and either burn those well know queries into flash, or perhaps send them down the wire as needed. Then of course (maybe even more critically), can I control ram usage in a deterministic way such that it will still work on memory-constrained devices (e.g. having a total of 128 KiB max for the whole system). Anway, has this been discussed before? Or is it a fool's errand? Cheers! -dave _______________________________________________ sqlite-users mailing list sqlite-users@mailinglists.sqlite.org http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users ___________________________________________ Gunter Hick | Software Engineer | Scientific Games International GmbH | Klitschgasse 2-4, A-1130 Vienna | FN 157284 a, HG Wien, DVR: 0430013 | (O) +43 1 80100 - 0 May be privileged. May be confidential. Please delete if not the addressee. _______________________________________________ sqlite-users mailing list sqlite-users@mailinglists.sqlite.org http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users
