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statprof-reset creates a new state

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* module/statprof.scm (fresh-profiler-state): New helper.
  (ensure-profiler-state): Use it.
  (accumulate-time): No need to add 0.0 here.
  (statprof-reset): Create a new state instead of mutating the existing
  one.
This commit is contained in:
Andy Wingo 2014-02-21 21:56:01 +01:00
parent 45a7de8268
commit 4eb1fb9b8a
1 changed files with 16 additions and 16 deletions
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32
module/statprof.scm
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@ -194,9 +194,15 @@
(define profiler-state (make-parameter #f))
(define* (fresh-profiler-state #:key (count-calls? #f)
(sampling-frequency '(0 . 10000))
(full-stacks? #f))
(make-state 0.0 #f 0 sampling-frequency #f 0 count-calls? 0.0 #f '()
(make-hash-table) #f))
(define (ensure-profiler-state)
(or (profiler-state)
(let ((state (make-state #f #f #f #f #f 0 #t 0 #f '() #f #f)))
(let ((state (fresh-profiler-state)))
(profiler-state state)
state)))
@ -227,7 +233,6 @@
(define (accumulate-time state stop-time)
(set-accumulated-time! state
(+ (accumulated-time state)
0.0
(- stop-time (last-start-time state)))))
(define (get-call-data proc)
@ -410,20 +415,15 @@ data. If @var{full-stacks?} is true, collect all sampled stacks into a
list for later analysis.
Enables traps and debugging as necessary."
(define state (ensure-profiler-state))
(if (positive? (profile-level state))
(error "Can't reset profiler while profiler is running."))
(set-count-calls?! state count-calls?)
(set-accumulated-time! state 0)
(set-last-start-time! state #f)
(set-sample-count! state 0)
(set-sampling-frequency! state (cons sample-seconds sample-microseconds))
(set-remaining-prof-time! state #f)
(set-procedure-data! state (make-hash-table 131))
(set-record-full-stacks?! state full-stacks?)
(set-stacks! state '())
(sigaction SIGPROF profile-signal-handler)
#t)
(when (and (profiler-state) (positive? (profile-level (profiler-state))))
(error "Can't reset profiler while profiler is running."))
(let ((state (fresh-profiler-state #:count-calls? count-calls?
#:sampling-frequency
(cons sample-seconds sample-microseconds)
#:full-stacks? full-stacks?)))
(profiler-state state)
(sigaction SIGPROF profile-signal-handler)
#t))
(define (statprof-fold-call-data proc init)
"Fold @var{proc} over the call-data accumulated by statprof. Cannot be