Simon Chen <simonche...@gmail.com> wrote: > Another question is, if the c/c++ function takes 10 seconds to > finish, when another process queries the exact entry being modified, > what will be returned?
Either the old data, or the busy error - depending on whether your writing connection had to spill from in-memory cache to disk yet. > Is it possible to lock > this entry so that either the new value (when check passes) or old > value (when check fails) will be returned AFTER the c function is > done? Open an exclusive transaction with BEGIN EXCLUSIVE. For more details, see http://sqlite.org/lockingv3.html Igor Tandetnik _______________________________________________ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
