Re: [Caml-list] Ocaml debugger under Windows

["Benedikt Grundmann" <benedikt@cardexpert.net>]

Use Shawn Wagner's MsgQueue module to communicate between both threads
in a select friendly way.

http://raevnos.pennmush.org/code/ethread/doc/MsgQueue.html

Cheers,

Bene

2008/2/5, Dmitry Bely <dmitry.bely@gmail.com>:
> On Feb 5, 2008 12:54 PM, Alain Frisch <alain@frisch.fr> wrote:
> > Dmitry Bely wrote:
> > > The topic has a long history [1], but since then nothing has actually
> > > changed. It's easy to understand: INRIA people are busy and there are
> > > probably quite few Ocaml users in the Windows land to worry about. So I
> > > decided to do something myself :) (as it was with mingw port several
> > > years ago).
> >  >...
> > > If it's interesting for anyone I can publish a patch against Ocaml 3.10.1
> >
> > Yes, that's definitely interesting for us!
> >
> > Is there any hope to build the server with the mingw or msvc port?
>
> As soon as the following function is rewritten:
>
> debugger/input_handling.ml
>
> (* Handle active files until `continue_main_loop' is false. *)
> let main_loop () =
>   let old_state = !continue_main_loop in
>     try
>       continue_main_loop := true;
>       while !continue_main_loop do
>         try
>           let (input, _, _) =
>             select (List.map fst !active_files) [] [] (-1.)
>           in
>             List.iter
>               (function fd ->
>                  let (funct, iochan) = (List.assoc fd !active_files) in
>                    funct iochan)
>               input
>         with
>           Unix_error (EINTR, _, _) -> ()
>       done;
>       continue_main_loop := old_state
>     with
>       x ->
>         continue_main_loop := old_state;
>         raise x
>
> here Unix.select() waits for both network and user input events. We
> could split this into 2 threads, but how to interrupt network select()
> when we going to exit? Well, we could use some small timeout value for
> select() (say 500ms) and restart it the loop when !continue_main_loop
> is set, but this looks not very elegant... Or it's OK?
>
> The point is not to modify win32unix library or write Win32-specific C
> functions for ocamldebug. I believe it's necessary to be ever accepted
> by INRIA.
>
>
> - Dmitry Bely
>
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