Handle run-program with :directory nil.

[sbcl.git] / src / code / linux-os.lisp

diff --git a/src/code/linux-os.lisp b/src/code/linux-os.lisp
index 585401e..2efe31b 100644 (file)
--- a/src/code/linux-os.lisp
+++ b/src/code/linux-os.lisp
@@ -1,4 +1,4 @@
-;;;; OS interface functions for CMU CL under Linux
+;;;; OS interface functions for SBCL under Linux
 
 ;;;; This software is part of the SBCL system. See the README file for
 ;;;; more information.
@@ -20,8 +20,6 @@
   "Return a string describing the supporting software."
   (values "Linux"))
 
-(defvar *software-version* nil)
-
 ;;; FIXME: More duplicated logic here vrt. other oses. Abstract into
 ;;; uname-software-version?
 (defun software-version ()
@@ -35,22 +33,7 @@
                            (sb!ext:run-program "/bin/uname" `("-r")
                                                :output stream))))))
 
-;;; FIXME: This logic is duplicated in other backends:
-;;; abstract, abstract. OS-COMMON-COLD-INIT-OR-REINIT, mayhaps?
-(defun os-cold-init-or-reinit () ; KLUDGE: don't know what to do here
-  (/show0 "entering linux-os.lisp OS-COLD-INIT-OR-REINIT")
-  (setf *software-version* nil)
-  (/show0 "setting *DEFAULT-PATHNAME-DEFAULTS*")
-  (setf *default-pathname-defaults*
-        ;; (temporary value, so that #'PATHNAME won't blow up when
-        ;; we call it below:)
-        (make-trivial-default-pathname)
-        *default-pathname-defaults*
-        ;; (final value, constructed using #'PATHNAME:)
-        (pathname (sb!unix:posix-getcwd/)))
-  (/show0 "leaving linux-os.lisp OS-COLD-INIT-OR-REINIT"))
-
-;;; Return system time, user time and number of page faults.
+;;; Return user time, system time, and number of page faults.
 (defun get-system-info ()
   (multiple-value-bind
       (err? utime stime maxrss ixrss idrss isrss minflt majflt)
@@ -62,7 +45,41 @@
 
 ;;; Return the system page size.
 (defun get-page-size ()
-  ;; probably should call getpagesize()
-  ;; FIXME: Or we could just get rid of this, since the uses of it look
-  ;; disposable.
-  4096)
+  sb!c:*backend-page-bytes*)
+
+;;; support for CL:MACHINE-VERSION defined OAOO elsewhere
+(defun get-machine-version ()
+  (or
+   #!+(and mips little-endian)
+   "little-endian"
+   #!+(and mips big-endian)
+   "big-endian"
+   (let ((marker
+          ;; hoping "cpu" exists and gives something useful in
+          ;; all relevant Linuxen...
+          ;;
+          ;; from Lars Brinkhoff sbcl-devel 26 Jun 2003:
+          ;;   I examined different versions of Linux/PPC at
+          ;;   http://lxr.linux.no/ (the file that outputs
+          ;;   /proc/cpuinfo is arch/ppc/kernel/setup.c, if
+          ;;   you want to check), and all except 2.0.x
+          ;;   seemed to do the same thing as far as the
+          ;;   "cpu" field is concerned, i.e. it always
+          ;;   starts with the (C-syntax) string "cpu\t\t: ".
+          #!+ppc "cpu"
+          ;; The field "model name" exists on kernel 2.4.21-rc6-ac1
+          ;; anyway, with values e.g.
+          ;;   "AMD Athlon(TM) XP 2000+"
+          ;;   "Intel(R) Pentium(R) M processor 1300MHz"
+          ;; which seem comparable to the information in the example
+          ;; in the MACHINE-VERSION page of the ANSI spec.
+          #!+(or x86 x86-64) "model name"))
+     (when marker
+       (with-open-file (stream "/proc/cpuinfo"
+                               ;; Even on Linux it's an option to build
+                               ;; kernels without /proc filesystems, so
+                               ;; degrade gracefully.
+                               :if-does-not-exist nil)
+         (loop with line while (setf line (read-line stream nil))
+               when (eql (search marker line) 0)
+               return (string-trim " " (subseq line (1+ (position #\: line))))))))))