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+(************************************************************************)
+(* v * The Coq Proof Assistant / The Coq Development Team *)
+(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2015 *)
+(* \VV/ **************************************************************)
+(* // * This file is distributed under the terms of the *)
+(* * GNU Lesser General Public License Version 2.1 *)
+(************************************************************************)
+
+type worker_id = string
+
+type 'a cpanel = {
+ exit : unit -> unit; (* called by manager to exit instead of Thread.exit *)
+ cancelled : unit -> bool; (* manager checks for a request of termination *)
+ extra : 'a; (* extra stuff to pass to the manager *)
+}
+
+module type PoolModel = sig
+ (* this shall come from a Spawn.* model *)
+ type process
+ val spawn : int -> worker_id * process * CThread.thread_ic * out_channel
+
+ (* this defines the main loop of the manager *)
+ type extra
+ val manager :
+ extra cpanel -> worker_id * process * CThread.thread_ic * out_channel -> unit
+end
+
+module Make(Model : PoolModel) : sig
+
+ type pool
+
+ val create : Model.extra -> size:int -> pool
+
+ val is_empty : pool -> bool
+ val n_workers : pool -> int
+
+ (* cancel signal *)
+ val cancel : worker_id -> pool -> unit
+ val cancel_all : pool -> unit
+ (* camcel signal + true removal, the pool is empty afterward *)
+ val destroy : pool -> unit
+
+ (* The worker should call this function *)
+ val worker_handshake : CThread.thread_ic -> out_channel -> unit
+
+end