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pollen
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handle output paths separately

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dev-output-files-201008
Matthew Butterick 4 years ago
parent d355894e95
commit b318369ccf
1 changed files with 34 additions and 28 deletions
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62
pollen/render.rkt
Unescape Escape View File

@ -1,4 +1,4 @@
#lang debug racket/base
#lang racket/base
(require racket/file
racket/path
racket/match
@ -48,15 +48,16 @@
(define (mod-date-missing-or-changed? source-path template-path)
(not (hash-has-key? mod-date-hash (paths->key 'output source-path template-path))))
(define (parallel-render source-paths-in job-count-arg)
(define (parallel-render source-paths-in output-paths-in job-count-arg)
;; if jobs are already in the cache, pull them out before assigning workers
;; using worker to fetch from cache is slower
(define source-to-output-path-table (map cons source-paths-in output-paths-in))
(define-values (uncached-source-paths previously-cached-jobs)
(for/fold ([usps null]
[pcjs null])
([source-path (in-list source-paths-in)])
([source-path (in-list source-paths-in)]
[output-path (in-list output-paths-in)])
(match (let/ec exit
(define output-path (or (->output-path source-path) #false))
(define template-path
(cache-ref! (template-cache-key source-path output-path) (λ () (exit 'template-miss))))
(render-to-file-if-needed source-path template-path output-path (λ () (exit 'render-miss))))
@ -76,17 +77,17 @@
(for/list ([wpidx (in-range job-count)])
(define wp (place ch
(let loop ()
(match-define (cons path poly-target)
(match-define (list path output-path poly-target)
(place-channel-put/get ch (list 'wants-job)))
(parameterize ([current-poly-target poly-target])
(place-channel-put/get ch (list 'wants-lock (->output-path path)))
(place-channel-put/get ch (list 'wants-lock output-path))
;; trap any exceptions and pass them back as crashed jobs.
;; otherwise, a crashed rendering place can't recover, and the parallel job will be stuck.
(with-handlers ([exn:fail? (λ (e) (place-channel-put ch (list 'crashed-job path #f)))])
(match-define-values (_ _ ms _)
;; we don't use `render-to-file-if-needed` because we've already checked the render cache
;; if we reached this point, we know we need a render
(time-apply render-to-file (list path)))
(time-apply render-to-file (list path #f output-path)))
(place-channel-put ch (list 'finished-job path ms))))
(loop))))
(handle-evt wp (λ (val) (list* wpidx wp val)))))
@ -125,36 +126,39 @@
;; if it was a concurrency-related error, it will disappear.
;; if it was a legit error, the render will stop and print a trace.
;; crashed jobs are completed jobs that weren't finished
(for/list ([(path finished?) (in-dict completed-jobs)]
#:unless finished?)
path)]
(define failed-source-paths (for/list ([(path finished?) (in-dict completed-jobs)]
#:unless finished?)
path))
(define failed-output-paths (for/list ([source-path (in-list failed-source-paths)])
(dict-ref source-to-output-path-table source-path)))
(list failed-source-paths failed-output-paths)]
[else
(match (apply sync worker-evts)
[(list wpidx wp 'wants-job)
(match source-paths
[(? null?) (loop null locks blocks completed-jobs completed-job-count)]
[(cons path rest)
(place-channel-put wp (cons path poly-target))
[(cons source-path rest)
(place-channel-put wp (list source-path (dict-ref source-to-output-path-table source-path) poly-target))
(loop rest locks blocks completed-jobs completed-job-count)])]
[(list wpidx wp (and (or 'finished-job 'crashed-job) tag) path ms)
[(list wpidx wp (and (or 'finished-job 'crashed-job) tag) source-path ms)
(match tag
['finished-job
(message
(format "rendered @ job ~a /~a ~a"
(~r (add1 wpidx) #:min-width (string-length (~r job-count)) #:pad-string " ")
(find-relative-path (current-project-root) (->output-path path))
(find-relative-path (current-project-root) (dict-ref source-to-output-path-table source-path))
(if (< ms 1000) (format "(~a ms)" ms) (format "(~a s)" (/ ms 1000.0)))))]
[_
(message
(format "render crash @ job ~a /~a (retry pending)"
(add1 wpidx)
(find-relative-path (current-project-root) (->output-path path))))])
(find-relative-path (current-project-root) (dict-ref source-to-output-path-table source-path))))])
(loop source-paths
(match (assoc wp locks)
[#false locks]
[lock (remove lock locks)])
blocks
(cons (cons path (eq? tag 'finished-job)) completed-jobs)
(cons (cons source-path (eq? tag 'finished-job)) completed-jobs)
(add1 completed-job-count))]
[(list wpidx wp 'wants-lock path)
(loop source-paths locks (append blocks (list (cons wp path))) completed-jobs completed-job-count)])])))
@ -169,6 +173,11 @@
;; And with render, they would be rendered repeatedly.
;; Using reset-modification-dates is sort of like session control.
(reset-mod-date-hash!)
;; we need to handle output-paths in parallel
;; because `raco pollen render` can take an output path for poly source.
;; meaning, if source is "test.poly.pm" and we get `raco pollen render test.txt`,
;; then the output path argument should force .txt rendering, regardless of `current-poly-target` setting
;; so the output path may contain information we need that we can't necessarily derive from the source path.
(define expanded-source-paths
(let loop ([paths paths-in] [acc null])
(match paths
@ -180,24 +189,21 @@
[(app ->source-path (and (not #false) (? file-exists?) sp))
(loop rest (cons sp acc))]
[_ (loop rest acc)])])))
#R paths-in
#R expanded-source-paths
(define expanded-output-paths
(for/list ([path (in-list paths-in)]
[sp (in-list expanded-source-paths)])
(if (equal? (->output-path path) path)
path
(->output-path sp))))
#R expanded-output-paths
[sp (in-list expanded-source-paths)])
(if (equal? (->output-path path) path)
path
(->output-path sp))))
(cond
[(null? expanded-source-paths) (message "[no paths to render]")]
[(eq? special-output 'dry-run) (for-each message expanded-source-paths)]
[else (parameterize ([current-null-output? (eq? special-output 'null)])
(for-each render-to-file-if-needed
(match wants-parallel-render?
;; returns crashed jobs for serial rendering
[#false expanded-source-paths]
[jobs-arg (parallel-render expanded-source-paths jobs-arg)])))]))
(apply for-each (λ (sp op) (render-to-file-if-needed sp #f op))
(match wants-parallel-render?
;; returns crashed jobs for serial rendering
[#false (list expanded-source-paths expanded-output-paths)]
[jobs-arg (parallel-render expanded-source-paths expanded-output-paths jobs-arg)])))]))
(define+provide/contract (render-pagenodes pagetree-or-path)
((or/c pagetree? pathish?) . -> . void?)

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