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|
(******************************************************************************
* Core *
* *
* Copyright (C) 2008- Jane Street Holding, LLC *
* Contact: opensource@janestreet.com *
* WWW: http://www.janestreet.com/ocaml *
* *
* *
* This library is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Lesser General Public *
* License as published by the Free Software Foundation; either *
* version 2 of the License, or (at your option) any later version. *
* *
* This library is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with this library; if not, write to the Free Software *
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA *
* *
******************************************************************************)
module List = Core_list
module String = Core_string
let threads_have_been_created = ref false
include Caml.Thread
let create f arg =
threads_have_been_created := true;
let f arg =
try f arg
with x ->
Printf.eprintf "%s\n%!" (Exn.to_string x);
raise x
in
create f arg
;;
let threads_have_been_created () = !threads_have_been_created
let wait_signal sigs = wait_signal (List.map ~f:Signal.to_caml_int sigs)
let sigmask cmd sigs =
let cmd =
match cmd with
| `Set -> Unix.SIG_SETMASK
| `Block -> Unix.SIG_BLOCK
| `Unblock -> Unix.SIG_UNBLOCK
in
let sigs = List.map ~f:Signal.to_caml_int sigs in
List.map ~f:Signal.of_caml_int (sigmask cmd sigs)
;;
let num_threads () =
let rec find_thread_count = function
| [] -> None
| line :: xs ->
if String.is_prefix line ~prefix:"Threads:" then
begin
try
Some (int_of_string
(String.strip (snd (String.lsplit2_exn line ~on:':'))))
with
| _ -> None
end
else find_thread_count xs
in
try
find_thread_count
(In_channel.read_lines
("/proc/" ^ string_of_int (Unix.getpid ()) ^ "/status"))
with _ -> None
;;
let block_forever () =
Event.sync (Event.receive (Event.new_channel ()))
;;
|
