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(************************************************************************)
(* * The Coq Proof Assistant / The Coq Development Team *)
(* v * INRIA, CNRS and contributors - Copyright 1999-2018 *)
(* <O___,, * (see CREDITS file for the list of authors) *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(* * (see LICENSE file for the text of the license) *)
(************************************************************************)
open Spawn
let pr_err s = Printf.eprintf "(Spawned,%d) %s\n%!" (Unix.getpid ()) s
let prerr_endline s = if !Flags.debug then begin pr_err s end else ()
type chandescr = AnonPipe | Socket of string * int * int
let open_bin_connection h pr pw =
let open Unix in
let _, cout = open_connection (ADDR_INET (inet_addr_of_string h,pr)) in
let cin, _ = open_connection (ADDR_INET (inet_addr_of_string h,pw)) in
set_binary_mode_in cin true;
set_binary_mode_out cout true;
let cin = CThread.prepare_in_channel_for_thread_friendly_io cin in
cin, cout
let controller h pr pw =
prerr_endline "starting controller thread";
let main () =
let ic, oc = open_bin_connection h pr pw in
let loop () =
try
match CThread.thread_friendly_input_value ic with
| Hello _ -> prerr_endline "internal protocol error"; exit 1
| ReqDie -> prerr_endline "death sentence received"; exit 0
with
| e ->
prerr_endline ("control channel broken: " ^ Printexc.to_string e);
exit 1 in
loop () in
ignore(CThread.create main ())
let main_channel = ref None
let control_channel = ref None
let channels = ref None
let init_channels () =
if !channels <> None then CErrors.anomaly(Pp.str "init_channels called twice.");
let () = match !main_channel with
| None -> ()
| Some (Socket(mh,mpr,mpw)) ->
channels := Some (open_bin_connection mh mpr mpw);
| Some AnonPipe ->
let stdin = Unix.in_channel_of_descr (Unix.dup Unix.stdin) in
let stdout = Unix.out_channel_of_descr (Unix.dup Unix.stdout) in
Unix.dup2 Unix.stderr Unix.stdout;
set_binary_mode_in stdin true;
set_binary_mode_out stdout true;
let stdin = CThread.prepare_in_channel_for_thread_friendly_io stdin in
channels := Some (stdin, stdout);
in
match !control_channel with
| None -> ()
| Some (Socket (ch, cpr, cpw)) ->
controller ch cpr cpw
| Some AnonPipe ->
CErrors.anomaly (Pp.str "control channel cannot be a pipe.")
let get_channels () =
match !channels with
| None ->
Printf.eprintf "Fatal error: ideslave communication channels not set.\n";
exit 1
| Some(ic, oc) -> ic, oc
let process_id () =
Printf.sprintf "%d:%s:%d" (Unix.getpid ())
(if Flags.async_proofs_is_worker () then !Flags.async_proofs_worker_id
else "master")
(Thread.id (Thread.self ()))
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