diff options
Diffstat (limited to 'tekuti/util.scm')
| -rw-r--r-- | tekuti/util.scm | 35 |
1 files changed, 32 insertions, 3 deletions
diff --git a/tekuti/util.scm b/tekuti/util.scm index 6017055..35c0c78 100644 --- a/tekuti/util.scm +++ b/tekuti/util.scm @@ -29,8 +29,8 @@ #:use-module (srfi srfi-1) #:export (expanduser match-lines dbg unwind-protect dbg dsu-sort hash-push! list-has-length? list-head-match mapn - take-max - list-intersperse with-backtrace define-memoized)) + take-max read-hash write-hash + list-intersperse with-backtrace with-time-debugging define-memoized)) (define (expanduser path) (let ((parts (string-split path #\/))) @@ -115,7 +115,7 @@ (force-output cep) (apply throw key args))) -(define (with-backtrace proc) +(define (with-backtrace* proc) (debug-enable 'backtrace) (start-stack 'with-backtrace (catch #t @@ -125,6 +125,24 @@ (fluid-set! the-last-stack (make-stack #t 2 0)) (apply throw args))))) +(define-macro (with-backtrace . forms) + `(,with-backtrace* (lambda () ,@forms))) + +(define (gettimeofday-diff prev) + (let ((now (gettimeofday))) + (+ (- (car now) (car prev)) + (* 1e-6 (- (cdr now) (cdr prev)))))) + +(define (with-time-debugging* proc) + (pk 'start-clock) + (let ((start (gettimeofday))) + (unwind-protect + (proc) + (pk 'stop-clock (gettimeofday-diff start))))) + +(define-macro (with-time-debugging . forms) + `(,with-time-debugging* (lambda () ,@forms))) + (define (memoize1 proc) (let ((old-args #f) (cache #f) (proc proc)) (lambda args @@ -139,3 +157,14 @@ `(begin (define ,form ,@body) (set! ,(car form) (,memoize1 ,(car form))))) + +(define (write-hash h) + (write (hash-fold acons '() h))) + +(define (read-hash) + (let ((h (make-hash-table))) + (for-each (lambda (pair) + (hash-set! h (car pair) (cdr pair))) + (read)) + h)) + |