Hi,
On Mon, Aug 4, 2014 at 11:58 AM, Heikki Linnakangas <hlinnakan...@vmware.com > wrote: > On 08/04/2014 01:31 PM, Seref Arikan wrote: > >> Thanks a lot Heikki and Albe. Exactly what I was asking for. >> Heikki: the libraries are written in languages that have their own runtime >> and their documentation insists that both init and dispose calls are >> performed when used from C. PG_init() and proc_exit sounds spot on. >> > > You might also consider creating your own PL handler for those languages. > Or google around if one exists already. That was what I checked first, but unfortunately none exists at the moment. I really want to write one,which would probably be a much cleaner way of doing what I'm going to do, but time pressure does not let me. At the moment the lowest hanging fruit is to pass values through C functions to these libraries and get the results back; hence, my questions. > > > Any ideas about keeping some data at session level between calls? Both >> calls of the same function and different C functions. (though temp table >> is >> always there as an option) >> > > You can use a global variable in the C extension. If you need to allocate > memory that survives across function calls, use > "MemoryContextSwitchTo(TopMemoryContext); > ... = palloc(...)". I'm sure you'll find examples of that in the existing > extensions too. > Thanks, I'll check this out as well. > - Heikki > >
