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9630e974 | 1 | ;;;; Copyright (C) 1996, 1998 Free Software Foundation, Inc. |
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2 | ;;;; |
3 | ;;;; This program is free software; you can redistribute it and/or modify | |
4 | ;;;; it under the terms of the GNU General Public License as published by | |
5 | ;;;; the Free Software Foundation; either version 2, or (at your option) | |
6 | ;;;; any later version. | |
7 | ;;;; | |
8 | ;;;; This program is distributed in the hope that it will be useful, | |
9 | ;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | ;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | ;;;; GNU General Public License for more details. | |
12 | ;;;; | |
13 | ;;;; You should have received a copy of the GNU General Public License | |
14 | ;;;; along with this software; see the file COPYING. If not, write to | |
15328041 JB |
15 | ;;;; the Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
16 | ;;;; Boston, MA 02111-1307 USA | |
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17 | ;;;; |
18 | ;;;; ---------------------------------------------------------------- | |
19 | ;;;; threads.scm -- User-level interface to Guile's thread system | |
20 | ;;;; 4 March 1996, Anthony Green <green@cygnus.com> | |
21 | ;;;; Modified 5 October 1996, MDJ <djurfeldt@nada.kth.se> | |
22 | ;;;; ---------------------------------------------------------------- | |
23 | ;;;; | |
24 | \f | |
25 | ||
8bb7330c | 26 | (define-module (ice-9 threads)) |
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27 | |
28 | \f | |
29 | ||
30 | ; --- MACROS ------------------------------------------------------- | |
31 | ||
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32 | (define-public (%thread-handler tag . args) |
33 | (fluid-set! the-last-stack #f) | |
34 | (unmask-signals) | |
35 | (let ((n (length args)) | |
36 | (p (current-error-port))) | |
37 | (display "In thread:" p) | |
38 | (newline p) | |
39 | (if (>= n 3) | |
40 | (display-error #f | |
41 | p | |
42 | (car args) | |
43 | (cadr args) | |
44 | (caddr args) | |
45 | (if (= n 4) | |
46 | (cadddr args) | |
47 | '())) | |
48 | (begin | |
49 | (display "uncaught throw to " p) | |
50 | (display tag p) | |
51 | (display ": " p) | |
52 | (display args p) | |
53 | (newline p))))) | |
54 | ||
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55 | (defmacro-public make-thread (fn . args) |
56 | `(call-with-new-thread | |
57 | (lambda () | |
58 | (,fn ,@args)) | |
13dc0cae | 59 | %thread-handler)) |
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60 | |
61 | (defmacro-public begin-thread (first . thunk) | |
62 | `(call-with-new-thread | |
63 | (lambda () | |
64 | (begin | |
65 | ,first ,@thunk)) | |
13dc0cae | 66 | %thread-handler)) |
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67 | |
68 | (defmacro-public with-mutex (m . thunk) | |
69 | `(dynamic-wind | |
70 | (lambda () (lock-mutex ,m)) | |
71 | (lambda () (begin ,@thunk)) | |
72 | (lambda () (unlock-mutex ,m)))) | |
73 | ||
74 | (defmacro-public monitor (first . thunk) | |
75 | `(with-mutex ,(make-mutex) | |
76 | (begin | |
77 | ,first ,@thunk))) |