Hello, Mike Gran <[EMAIL PROTECTED]> writes:
> I have a C library that I wrapped as gsubrs that get put into a Guile > module. The C library wants a library_init() function called when it > is initialized and a library_end() function called when it taken down. > > (for the curious, it is specifically mysql_library_init() and > mysql_library_end().) > > The library_init() call is easy because it can be called automatically > in the initialization function called by (load-extension "libfoo.so" > "foo_init"). In theory, the Right Way(tm) would be to register a finalizer for the module that does `load-extension'. That can be done using a guardian, but the guardian the needs to be called once in a while, e.g., in `after-gc-hook' and `exit-hook'. > Since libraries are never unloaded, I guess I can wait until the > program exit to call library_end(). Well, yes. :-) Then `exit-hook' should do the job, no? > I've got one crazy idea. I could create a new special SMOB type which > calls library_end() as part of the SMOB's free function. When the > Guile library is loaded, it will define a single variable of that type > in the module's environment. The guardian suggestion above achieves that, but slightly more elegantly. :-) Thanks, Ludo'.
