Re: [Caml-list] hook before gc major collections

[Fabrice Le Fessant <Fabrice.Le_fessant@inria.fr>]

On Tue, Oct 7, 2014 at 10:05 AM, Damien Pous <Damien.Pous@inria.fr> wrote:
> Is there a way to register a function, to be called before each gc
> major collection ?
> (I have some cache tables which I'd like to empty from time to time -
> I'm not sure this is a good idea, but I would like to experiment it.)
>
> I see two related functions in the std lib, but not the precise thing I want:
> - Gc.create_alarm, to register a function to be called *after* such
> collections ;

Isn't *after* a major GC *before* the next one ? The major GC being
incremental, the major collection is almost always already started,
your code running between two slices of the same major collection. So,
it looks like this alarm is catching the only time between the last
slice of a major collection and the first slice of the next one.

--Fabrice