Re: Patch to allow C extension modules to initialize/finish

On Thu, Aug 03, 2006, tomas(at)tuxteam(dot)de wrote:

> On Wed, Aug 02, 2006 at 09:04:11PM +0200, Ralf S. Engelschall wrote:
> > PostgreSQL provides a way to load C extension modules with its internal
> > FMGR. Unfortunately there is no portable way for an extension module to
> > initialize (directly after the pg_dlopen() of the DSO) and to finish
> > (directly before the pg_dlclose() of the DSO). [...]
>
> Cool, but...
> [...]
>
> > +
> > + /* optionally give the DSO a chance to finish by calling
> > + a PostgreSQL-specific (and this way portable) "_PG_fini"
> > + function similar to what dlopen(3) implicitly does with
> > + "_fini" on some Unix platforms. */
> > + if ((PG_fini = (PG_init_t *)pg_dlsym(file_scanner->handle, "_PG_fini")) != NULL)
> ^^^^^^^^^
> > + (*PG_fini)();
> > +
> > pg_dlclose(file_scanner->handle);
> > free((char *) file_scanner);
> > /* prv does not change */
>
> shouldn't that be PG_fini_t?

Ops, good catch. Yes, "PG_fini_t", of course.

Ralf S. Engelschall
rse(at)engelschall(dot)com
www.engelschall.com