make the log follower always available in DrRacket
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Robby Findler
parent
7b04571fac
commit
741be85f07
151
collects/framework/private/follow-log.rkt
Normal file
151
collects/framework/private/follow-log.rkt
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@ -0,0 +1,151 @@
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#lang racket/base
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(require racket/list
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racket/class
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racket/match
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racket/pretty
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racket/gui/base
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framework/private/logging-timer)
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#|
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This file sets up a log receiver and then
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starts up DrRacket. It catches log messages and
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organizes them on event boundaries, printing
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out the ones that take the longest
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(possibly dropping those where a gc occurs)
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The result shows, for each gui event, the
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log messages that occured during its dynamic
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extent as well as the number of milliseconds
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from the start of the gui event before the
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log message was reported.
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|#
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(define lr (make-log-receiver (current-logger)
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'debug 'racket/engine
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'debug 'GC
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'debug 'gui-event
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'debug 'framework/colorer
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'debug 'timeline))
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(define top-n-events 50)
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(define drop-gc? #t)
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(define start-right-away? #f)
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(define done-chan (make-channel))
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(define start-chan (make-channel))
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(void
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(thread
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(λ ()
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(let loop ()
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(sync start-chan)
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(let loop ([events '()])
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(sync
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(handle-evt
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lr
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(λ (info)
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(loop (cons info events))))
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(handle-evt
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done-chan
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(λ (resp-chan)
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(channel-put resp-chan events)))))
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(loop)))))
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(define controller-frame-eventspace (make-eventspace))
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(define f (parameterize ([current-eventspace controller-frame-eventspace])
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(new frame% [label "Log Follower"])))
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(define sb (new button% [label "Start"] [parent f]
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[callback
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(λ (_1 _2)
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(sb-callback))]))
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(define db (new button% [label "Stop && Dump"] [parent f] [enabled #f]
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[callback
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(λ (_1 _2)
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(define resp (make-channel))
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(channel-put done-chan resp)
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(show-results (channel-get resp))
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(send db enable #f)
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(send sb enable #t))]))
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(define (sb-callback)
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(send sb enable #f)
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(send db enable #t)
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(channel-put start-chan #t))
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(send f show #t)
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(struct gui-event (start end name) #:prefab)
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(define (show-results evts)
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(define gui-events (filter (λ (x)
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(define i (vector-ref x 2))
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(and (gui-event? i)
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(number? (gui-event-end i))))
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evts))
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(define interesting-gui-events
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(take (sort gui-events > #:key (λ (x)
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(define i (vector-ref x 2))
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(- (gui-event-end i)
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(gui-event-start i))))
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top-n-events))
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(define with-other-events
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(for/list ([gui-evt (in-list interesting-gui-events)])
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(match (vector-ref gui-evt 2)
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[(gui-event start end name)
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(define in-the-middle
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(append (map (λ (x) (list (list 'δ (- (get-start-time x) start)) x))
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(sort
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(filter (λ (x) (and (not (gui-event? (vector-ref x 2)))
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(<= start (get-start-time x) end)))
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evts)
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<
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#:key get-start-time))
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(list (list (list 'δ (- end start)) 'end-of-gui-event))))
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(list* (- end start)
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gui-evt
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in-the-middle)])))
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(define (has-a-gc-event? x)
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(define in-the-middle (cddr x))
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(ormap (λ (x)
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(and (vector? (list-ref x 1))
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(gc-info? (vector-ref (list-ref x 1) 2))))
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in-the-middle))
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(pretty-print
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(if drop-gc?
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(filter (λ (x) (not (has-a-gc-event? x)))
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with-other-events)
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with-other-events)))
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(struct gc-info (major? pre-amount pre-admin-amount code-amount
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post-amount post-admin-amount
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start-process-time end-process-time
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start-time end-time)
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#:prefab)
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(struct engine-info (msec name) #:prefab)
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(define (get-start-time x)
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(cond
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[(gc-info? (vector-ref x 2))
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(gc-info-start-time (vector-ref x 2))]
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[(engine-info? (vector-ref x 2))
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(engine-info-msec (vector-ref x 2))]
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[(regexp-match #rx"framework" (vector-ref x 1))
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(vector-ref x 2)]
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[(timeline-info? (vector-ref x 2))
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(timeline-info-milliseconds (vector-ref x 2))]
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[else
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(unless (regexp-match #rx"^GC: 0:MST @" (vector-ref x 1))
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(eprintf "unk: ~s\n" x))
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0]))
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(module+ main
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(when start-right-away?
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(parameterize ([current-eventspace controller-frame-eventspace])
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(queue-callback sb-callback)))
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(dynamic-require 'drracket #f))
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@ -796,9 +796,14 @@
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[ec (new position-canvas%
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[parent panel]
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[button-up
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(λ ()
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(λ (evt)
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(cond
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[(or (send evt get-alt-down)
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(send evt get-control-down))
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(dynamic-require 'framework/private/follow-log #f)]
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[else
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(collect-garbage)
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(update-memory-text))]
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(update-memory-text)]))]
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[init-width "99.99 MB"])])
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(set! memory-canvases (cons ec memory-canvases))
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(update-memory-text)
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@ -890,6 +895,7 @@
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(inherit min-client-height min-client-width get-dc get-client-size refresh)
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(init init-width)
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(init-field [button-up #f])
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(init-field [char-typed void])
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(define str "")
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(define/public (set-str _str)
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(set! str _str)
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@ -913,7 +919,11 @@
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(let-values ([(cw ch) (get-client-size)])
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(when (and (<= (send evt get-x) cw)
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(<= (send evt get-y) ch))
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(button-up))))))
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(if (procedure-arity-includes? button-up 1)
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(button-up evt)
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(button-up)))))))
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(define/override (on-char evt)
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(char-typed evt))
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(super-new (style '(transparent no-focus)))
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(let ([dc (get-dc)])
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(let-values ([(_1 th _2 _3) (send dc get-text-extent str)])
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