[Caml-list] toplevel with threads

[Caml-list] toplevel with threads

[Steve Elkins]

Will someone please explain what I'm doing wrong, or tell me my build
is broken, or enlighten me somehow.  I'm having trouble using threads
in toplevels, but not when I compile to bytecode.

  sge:346$ ocamlmktop -custom -o strocaml str.cma                      
  sge:347$ ./strocaml
          Objective Caml version 3.04

  # Str.regexp;;
  - : string -> Str.regexp = <fun>
  # ^D
  sge:348$ ocamlmktop -thread -custom -o throcaml threads.cma          
  Error while linking /usr/local/lib/ocaml/threads/threads.cma(ThreadUnix):
  Reference to undefined global `Unix'
  sge:349$ ocamlmktop -thread -custom -o throcaml unix.cma threads.cma
  sge:350$ ./throcaml
          Objective Caml version 3.04

  # Thread.create;;
  Unbound value Thread.create
  # ^D
  sge:351$ 

However...

  sge:351$ cat chap19.ml
  (* from p. 602 of the English translation of the O'Reilly book *)

  let f_proc1 () =
    for i = 0 to 10 do
      Printf.printf "(%d)" i;
      flush stdout
    done;
    print_newline() ;;

  let t1 = Thread.create f_proc1 () ;;

  Thread.join t1 ;;
  sge:352$ ocamlc -thread threads.cma chap19.ml                        
  sge:353$ ./a.out
  (0)(1)(2)(3)(4)(5)(6)(7)(8)(9)(10)
  sge:354$ 

I followed the instructions in the manual to build my Str toplevel,
but there are none at the beginning of the threads library section.
What am I doing wrong?

Thanks,
Steve
-------------------
To unsubscribe, mail caml-list-request@inria.fr Archives: http://caml.inria.fr
Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: http://caml.inria.fr/FAQ/
Beginner's list: http://groups.yahoo.com/group/ocaml_beginners

Re: [Caml-list] toplevel with threads

[Jacques Garrigue]

From: Steve Elkins <sgelkins@bellsouth.net>

> Will someone please explain what I'm doing wrong, or tell me my build
> is broken, or enlighten me somehow.  I'm having trouble using threads
> in toplevels, but not when I compile to bytecode.
> 
>   sge:346$ ocamlmktop -custom -o strocaml str.cma                      

Which architecture (OS) are you working with?
Since ocaml 3.04, you don't need to build custom toplevels on
architectures where dynamic loading is supported.

$ ocaml
        Objective Caml version 3.04

# #load"str.cma";;
# Str.regexp;;
- : string -> Str.regexp = <fun>

This also works for threads, but not always:

$ ocaml -I +threads
        Objective Caml version 3.04

# #load"unix.cma";;
# #load"threads.cma";;

>   sge:350$ ./throcaml
>           Objective Caml version 3.04
> 
>   # Thread.create;;
>   Unbound value Thread.create

You need to add the +threads directory to your load path:
$ ./throcaml -I +threads

Cheers,

Jacques Garrigue
-------------------
To unsubscribe, mail caml-list-request@inria.fr Archives: http://caml.inria.fr
Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: http://caml.inria.fr/FAQ/
Beginner's list: http://groups.yahoo.com/group/ocaml_beginners

Re: [Caml-list] toplevel with threads

[Steve Elkins]

Jacques Garrigue <garrigue@kurims.kyoto-u.ac.jp> writes:

> Which architecture (OS) are you working with?
> Since ocaml 3.04, you don't need to build custom toplevels on
> architectures where dynamic loading is supported.

  sge:279$ uname -a
  OpenBSD d8tv0m01 3.0 GENERIC#94 i386

> $ ocaml
>         Objective Caml version 3.04
> 
> # #load"str.cma";;
> # Str.regexp;;
> - : string -> Str.regexp = <fun>

  sge:280$ ocaml
          Objective Caml version 3.04

  # #load "str.cma";;
  Cannot load required shared library: dynamic loading not supported on this platform.

> You need to add the +threads directory to your load path:
> $ ./throcaml -I +threads

  sge:281$ ./throcaml -I +threads
          Objective Caml version 3.04

  # Thread.create;;
  - : ('a -> 'b) -> 'a -> Thread.t = <fun>

Apologies, I should've tried '-I +threads', I guess not needing it
with 'ocamlc' threw me off the trail.

Thanks for the tip.

Steve
-------------------
To unsubscribe, mail caml-list-request@inria.fr Archives: http://caml.inria.fr
Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: http://caml.inria.fr/FAQ/
Beginner's list: http://groups.yahoo.com/group/ocaml_beginners

Re: [Caml-list] toplevel with threads

[Markus Mottl]

On Sun, 14 Apr 2002, Jacques Garrigue wrote:
> This also works for threads, but not always:
> 
> $ ocaml -I +threads
>         Objective Caml version 3.04
> 
> # #load"unix.cma";;
> # #load"threads.cma";;

Btw., another way to do it, which people are often not aware of, is to
use the "directory" directive instead of passing a command line argument:

> $ ocaml
>         Objective Caml version 3.04
  # #load "unix.cma";;
  # #directory "+threads";;
  # #load "threads.cma";;

This is very useful in interpreted scripts.

Regards,
Markus Mottl

-- 
Markus Mottl                                             markus@oefai.at
Austrian Research Institute
for Artificial Intelligence                  http://www.oefai.at/~markus
-------------------
To unsubscribe, mail caml-list-request@inria.fr Archives: http://caml.inria.fr
Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: http://caml.inria.fr/FAQ/
Beginner's list: http://groups.yahoo.com/group/ocaml_beginners