On Wed, 15 Sep 2010 11:49:42 -0300 Luiz Americo Pereira Camara <[email protected]> wrote:
> Mattias Gaertner escreveu: > > *many IDE parts will become slower (once you start a thread the RTL > > uses critical sections and especially string handling become much > > slower). > > If i understand correctly all program will suffer the performance hit, > not only the "threaded" part, right? Correct. As long as another thread runs. When the thread stops all returns to "normal". > Do you have an idea of how slower string handling would be? That heavily depends on the string operations you do. I saw two threads running slower than single threaded. > I'm asking this because i'm planning to make a client of a REST service > through http and i choose Synapse to do the communication. > > Since Synapse recommends to use thread to avoid GUI freeze, i planned to > use a thread for getting the data. In this case you have not much choice. > At the other side this REST server uses JSON as the data format. > > If the thread really affects badly the string handling (and parsing JSON > does a lot of it) i would rethink the strategy and go for an event > based http client like lnet. For performance relevant parts you should use PChar instead of strings. Even when doing single threaded. I mentioned the speed difference because this thread is about using multi threading in the IDE and what advantages/disadvantages this might have. The IDE is special in many ways, so don't take the comments of this thread as a general advice for your own programs. Mattias -- _______________________________________________ Lazarus mailing list [email protected] http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
