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 #:runlisp
  27   (:use #:common-lisp)
  28   (:export #:*lisp-interpreter* #:*command-line-strings* #:run)
  29   #+cmu (:import-from #:ext #:*command-line-strings*))
  30 (defvar runlisp:*command-line-strings* '("<interactive>"))
  31
  32 (defpackage #:mdw.sys-base
  33   (:use #:common-lisp #:runlisp)
  34   (:export #:exit #:hard-exit #:*program-name* #:*command-line-strings*)
  35   (:import-from #:runlisp #:*lisp-interpreter* #:*command-line-strings*)
  36   #+clisp (:import-from #:ext #:exit))
  37 (in-package #:mdw.sys-base)
  38
  39 (defun hard-exit (&optional (code 0))
  40   "Stops the program immediately in its tracks.  Does nothing else.  Use
  41    after fork, for example, to avoid flushing buffers."
  42   (declare (type (unsigned-byte 32) code))
  43   #+cmu (unix::void-syscall ("_exit" c-call:int) code)
  44   #+sbcl (sb-ext:quit :unix-status code :recklessly-p t)
  45   #+(or clisp ecl) (ext:quit code))
  46
  47 #-clisp
  48 (defun exit (&optional (code 0))
  49   "Polite way to end a program.  If running in an interactive Lisp, just
  50    return to the top-level REPL."
  51   (if (boundp '*lisp-interpreter*)
  52       #+(or cmu ecl) (ext:quit code)
  53       #+sbcl (sb-ext:quit :unix-status code)
  54       (progn
  55         (unless (zerop code)
  56           (format t "~&Exiting unsuccessfully with code ~D.~%" code))
  57         (abort))))
  58
  59 (defvar *program-name*
  60   (pathname-name (car *command-line-strings*))
  61   "A plausible guess at the program's name, stripped of strange extensions.")
  62
  63 ;;;----- That's all, folks --------------------------------------------------