mdw@git.distorted.org.uk Git - lisp/blob - sys-base.lisp

   1 ;;; -*-lisp-*-
   2 ;;;
   3 ;;; $Id$
   4 ;;;
   5 ;;; Basic system-specific stuff
   6 ;;;
   7 ;;; (c) 2005 Mark Wooding
   8 ;;;
   9
  10 ;;;----- Licensing notice ---------------------------------------------------
  11 ;;;
  12 ;;; This program is free software; you can redistribute it and/or modify
  13 ;;; it under the terms of the GNU General Public License as published by
  14 ;;; the Free Software Foundation; either version 2 of the License, or
  15 ;;; (at your option) any later version.
  16 ;;;
  17 ;;; This program is distributed in the hope that it will be useful,
  18 ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 ;;; GNU General Public License for more details.
  21 ;;;
  22 ;;; You should have received a copy of the GNU General Public License
  23 ;;; along with this program; if not, write to the Free Software Foundation,
  24 ;;; Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  25
  26 (defpackage #:mdw.runlisp
  27   (:use #:common-lisp #+cmu #:extensions)
  28   (:export #:*lisp-interpreter* #:*command-line-strings*))
  29 (in-package #:mdw.runlisp)
  30
  31 #+clisp
  32 (progn
  33   (defvar *lisp-interpreter*)
  34   (defvar *command-line-strings*)
  35   (let ((args (coerce (ext:argv) 'list)))
  36     (setf *lisp-interpreter* (car args))
  37     (setf *command-line-strings* (nthcdr 7 args))))
  38
  39 (defpackage #:mdw.sys-base
  40   (:use #:common-lisp #+cmu #:extensions #+cmu #:mdw.runlisp)
  41   (:export #:exit #:hard-exit #:*program-name* #:*command-line-strings*)
  42   (:import-from #:mdw.runlisp #:*lisp-interpreter* #:*command-line-strings*)
  43   #+clisp (:import-from #:ext #:exit))
  44 (in-package #:mdw.sys-base)
  45
  46 ;;; --- This is currently all a bit CMUCL-specific ---
  47
  48 #+(or cmu)
  49 (defun exit (&optional (code 0))
  50   "Polite way to end a program.  If running in an interactive Lisp, just
  51    return to the top-level REPL."
  52   (if #+cmu *batch-mode*
  53       #+cmu (throw 'lisp::%end-of-the-world code)
  54       (progn
  55         (unless (zerop code)
  56           (format t "~&Exiting unsuccessfully with code ~D.~%" code))
  57         (abort))))
  58
  59 (defun hard-exit (&optional (code 0))
  60   "Stops the program immediately in its tracks.  Does nothing else.  Use
  61    after fork, for example, to avoid flushing buffers."
  62   (declare (type (unsigned-byte 32) code))
  63   #+cmu (unix::void-syscall ("_exit" c-call:int) code)
  64   #+clisp (ext:quit code))
  65
  66 (defvar *program-name*
  67   (pathname-name (car *command-line-strings*))
  68   "A plausible guess at the program's name, stripped of strange extensions.")
  69
  70 ;;;----- That's all, folks --------------------------------------------------