src/code/linux-os.lisp

   1 ;;;; OS interface functions for SBCL under Linux
   2
   3 ;;;; This software is part of the SBCL system. See the README file for
   4 ;;;; more information.
   5 ;;;;
   6 ;;;; This software is derived from the CMU CL system, which was
   7 ;;;; written at Carnegie Mellon University and released into the
   8 ;;;; public domain. The software is in the public domain and is
   9 ;;;; provided with absolutely no warranty. See the COPYING and CREDITS
  10 ;;;; files for more information.
  11
  12 (in-package "SB!SYS")
  13
  14 ;;; Check that target machine features are set up consistently with
  15 ;;; this file.
  16 #!-linux (error "missing :LINUX feature")
  17
  18 (defun software-type ()
  19   #!+sb-doc
  20   "Return a string describing the supporting software."
  21   (values "Linux"))
  22
  23 ;;; FIXME: More duplicated logic here vrt. other oses. Abstract into
  24 ;;; uname-software-version?
  25 (defun software-version ()
  26   #!+sb-doc
  27   "Return a string describing version of the supporting software, or NIL
  28   if not available."
  29   (or *software-version*
  30       (setf *software-version*
  31             (string-trim '(#\newline)
  32                          (with-output-to-string (stream)
  33                            (sb!ext:run-program "/bin/uname" `("-r")
  34                                                :output stream))))))
  35
  36 ;;; Return user time, system time, and number of page faults.
  37 (defun get-system-info ()
  38   (multiple-value-bind
  39       (err? utime stime maxrss ixrss idrss isrss minflt majflt)
  40       (sb!unix:unix-getrusage sb!unix:rusage_self)
  41     (declare (ignore maxrss ixrss idrss isrss minflt))
  42     (unless err? ; FIXME: nonmnemonic (reversed) name for ERR?
  43       (error "Unix system call getrusage failed: ~A." (strerror utime)))
  44     (values utime stime majflt)))
  45
  46 ;;; Return the system page size.
  47 (defun get-page-size ()
  48   sb!c:*backend-page-size*)