;;; Source location.
;;;
-(define (absolute-dirname file)
- "Return the absolute name of the directory containing FILE, or #f upon
+(define absolute-dirname
+ ;; Memoize to avoid repeated 'stat' storms from 'search-path'.
+ (mlambda (file)
+ "Return the absolute name of the directory containing FILE, or #f upon
failure."
- (match (search-path %load-path file)
- (#f #f)
- ((? string? file)
- ;; If there are relative names in %LOAD-PATH, FILE can be relative and
- ;; needs to be canonicalized.
- (if (string-prefix? "/" file)
- (dirname file)
- (canonicalize-path (dirname file))))))
+ (match (search-path %load-path file)
+ (#f #f)
+ ((? string? file)
+ ;; If there are relative names in %LOAD-PATH, FILE can be relative and
+ ;; needs to be canonicalized.
+ (if (string-prefix? "/" file)
+ (dirname file)
+ (canonicalize-path (dirname file)))))))
(define-syntax current-source-directory
(lambda (s)