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+;;;; Copyright (C) 1996 Free Software Foundation, Inc.
+;;;;
+;;;; This program is free software; you can redistribute it and/or modify
+;;;; it under the terms of the GNU General Public License as published by
+;;;; the Free Software Foundation; either version 2, or (at your option)
+;;;; any later version.
+;;;;
+;;;; This program 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 General Public License for more details.
+;;;;
+;;;; You should have received a copy of the GNU General Public License
+;;;; along with this software; see the file COPYING. If not, write to
+;;;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+;;;;
+;;;; ----------------------------------------------------------------
+;;;; threads.scm -- User-level interface to Guile's thread system
+;;;; 4 March 1996, Anthony Green <green@cygnus.com>
+;;;; Modified 5 October 1996, MDJ <djurfeldt@nada.kth.se>
+;;;; ----------------------------------------------------------------
+;;;;
+
+
+(define-module #/ice-9/threads)
+
+
+
+; --- MACROS -------------------------------------------------------
+
+(defmacro-public make-thread (fn . args)
+ `(call-with-new-thread
+ (lambda ()
+ (,fn ,@args))
+ (lambda args args)))
+
+(defmacro-public begin-thread (first . thunk)
+ `(call-with-new-thread
+ (lambda ()
+ (begin
+ ,first ,@thunk))
+ (lambda args args)))
+
+(defmacro-public with-mutex (m . thunk)
+ `(dynamic-wind
+ (lambda () (lock-mutex ,m))
+ (lambda () (begin ,@thunk))
+ (lambda () (unlock-mutex ,m))))
+
+(defmacro-public monitor (first . thunk)
+ `(with-mutex ,(make-mutex)
+ (begin
+ ,first ,@thunk)))