;;; -*- mode: scheme; coding: utf-8; -*-
;;;
;;; Copyright (C) 2010, 2011, 2012 Free Software Foundation, Inc.
;;;
;;; 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 3 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

(define-module (ice-9 futures)
  #:use-module (srfi srfi-1)
  #:use-module (srfi srfi-9)
  #:use-module (srfi srfi-9 gnu)
  #:use-module (srfi srfi-11)
  #:use-module (ice-9 q)
  #:use-module (ice-9 match)
  #:use-module (ice-9 control)
  #:use-module (ice-9 threads)
  #:export (future make-future future? touch))

;;; Author: Ludovic Courtès <ludo@gnu.org>
;;;
;;; Commentary:
;;;
;;; This module provides an implementation of futures, a mechanism for
;;; fine-grain parallelism.  Futures were first described by Henry Baker
;;; in ``The Incremental Garbage Collection of Processes'', 1977, and
;;; then implemented in MultiLisp (an implicit variant thereof, i.e.,
;;; without `touch'.)
;;;
;;; This modules uses a fixed thread pool, normally one per CPU core.
;;; Futures are off-loaded to these threads, when they are idle.
;;;
;;; Code: