1 ;;;; This file contains things for the extensions packages (SB-EXT and
2 ;;;; also "internal extensions" SB-INT) which can't be built at
3 ;;;; cross-compile time, and perhaps also some things which might as
4 ;;;; well not be built at cross-compile time because they're not
5 ;;;; needed then. Things which can't be built at cross-compile time
6 ;;;; (e.g. because they need machinery which only exists inside SBCL's
7 ;;;; implementation of the LISP package) do not belong in this file.
9 ;;;; This software is part of the SBCL system. See the README file for
10 ;;;; more information.
12 ;;;; This software is derived from the CMU CL system, which was
13 ;;;; written at Carnegie Mellon University and released into the
14 ;;;; public domain. The software is in the public domain and is
15 ;;;; provided with absolutely no warranty. See the COPYING and CREDITS
16 ;;;; files for more information.
18 (in-package "SB!IMPL")
20 ;;;; variables initialization and shutdown sequences
22 ;; (Most of the save-a-core functionality is defined later, in its
23 ;; own file, but we'd like to have these symbols declared special
24 ;; and initialized ASAP.)
25 (defvar *save-hooks* nil
27 "This is a list of functions which are called in an unspecified
28 order before creating a saved core image. Unused by SBCL itself:
29 reserved for user and applications.")
31 (defvar *init-hooks* nil
33 "This is a list of functions which are called in an unspecified
34 order when a saved core image starts up, after the system itself has
35 been initialized. Unused by SBCL itself: reserved for user and
38 ;;; like LISTEN, but any whitespace in the input stream will be flushed
39 (defun listen-skip-whitespace (&optional (stream *standard-input*))
40 (do ((char (read-char-no-hang stream nil nil nil)
41 (read-char-no-hang stream nil nil nil)))
43 (cond ((not (whitespace[1]p char))
44 (unread-char char stream)
47 ;;;; helpers for C library calls
49 ;;; Signal a SIMPLE-CONDITION/ERROR condition associated with an ANSI C
50 ;;; errno problem, arranging for the condition's print representation
51 ;;; to be similar to the ANSI C perror(3) style.
52 (defun simple-perror (prefix-string
55 (simple-error 'simple-error)
57 (declare (type symbol simple-error))
58 (aver (subtypep simple-error 'simple-condition))
59 (aver (subtypep simple-error 'error))
62 :format-control "~@<~A: ~2I~_~A~:>"
63 :format-arguments (list prefix-string (strerror errno))
64 other-condition-args))