r10470: rename to numbers-within-percentage

[kmrcl.git] / os.lisp

diff --git a/os.lisp b/os.lisp
index 5bbfbfa4f2fbca3ff430e88dd14c9a10df46133b..805b10c3c5275baa529601ad4350c2e37a55c38c 100644 (file)
--- a/os.lisp
+++ b/os.lisp
@@ -153,8 +153,27 @@ returns (VALUES output-string pid)"
                    (error "Directory ~A does not exist [delete-directory-and-files]." dir))))
 
 (defun file-size (file)
-  #+allegro (let ((stat (excl.osi:stat (namestring file))))
-             (excl.osi:stat-size stat))
-  #-allegro
-  (with-open-file (in file :direction :input)
-    (file-length in)))
+  (when (probe-file file)
+    #+allegro (let ((stat (excl.osi:stat (namestring file))))
+               (excl.osi:stat-size stat))
+    #-allegro
+    (with-open-file (in file :direction :input)
+      (file-length in))))
+
+(defun getpid ()
+  "Return the PID of the lisp process."
+  #+allegro (excl::getpid)
+  #+(and lispworks win32) (win32:get-current-process-id)
+  #+(and lispworks (not win32)) (system::getpid)
+  #+sbcl (sb-posix:getpid)
+  #+cmu (unix:unix-getpid)
+  #+openmcl (ccl::getpid)
+  #+(and clisp unix) (system::program-id)
+  #+(and clisp win32) (cond ((find-package :win32)
+                            (funcall (find-symbol "GetCurrentProcessId" 
+                                                  :win32)))
+                           (t
+                            (system::getenv "PID")))
+  )
+
+