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SGI Freeware 2002 November
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SGI Freeware 2002 November - Disc 2.iso
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dist
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fw_guile.idb
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usr
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freeware
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guile
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1.4
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ice-9
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threads.scm.z
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threads.scm
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2002-07-08
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78 lines
;;;; Copyright (C) 1996, 1998 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, Inc., 59 Temple Place, Suite 330,
;;;; Boston, MA 02111-1307 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 -------------------------------------------------------
(define-public (%thread-handler tag . args)
(fluid-set! the-last-stack #f)
(unmask-signals)
(let ((n (length args))
(p (current-error-port)))
(display "In thread:" p)
(newline p)
(if (>= n 3)
(display-error #f
p
(car args)
(cadr args)
(caddr args)
(if (= n 4)
(cadddr args)
'()))
(begin
(display "uncaught throw to " p)
(display tag p)
(display ": " p)
(display args p)
(newline p)))))
(defmacro-public make-thread (fn . args)
`(call-with-new-thread
(lambda ()
(,fn ,@args))
%thread-handler))
(defmacro-public begin-thread (first . thunk)
`(call-with-new-thread
(lambda ()
(begin
,first ,@thunk))
%thread-handler))
(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)))