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- don't load unnecessary data at the end of search or occur

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- don't flood profile vector with approximations in linear search
This commit is contained in:
Andrey Kotlarski 2014-10-07 01:33:21 +03:00
parent 61599a007f
commit 7b9befe81a
3 changed files with 30 additions and 24 deletions
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13
vlf-occur.el
View File

@ -294,12 +294,13 @@ Prematurely ending indexing will still show what's found so far."
(setq end-of-file (= vlf-end-pos vlf-file-size))
(unless end-of-file
(vlf-tune-batch tune-types)
(let ((batch-move (- vlf-end-pos batch-step)))
(vlf-move-to-batch (if (or is-hexl
(< match-end-pos
batch-move))
batch-move
match-end-pos) t))
(let* ((batch-move (- vlf-end-pos batch-step))
(start (if (or is-hexl (< match-end-pos
batch-move))
batch-move
match-end-pos)))
(vlf-move-to-chunk start (+ start
vlf-batch-size) t))
(goto-char (if (or is-hexl
(<= match-end-pos vlf-start-pos))
(point-min)

37
vlf-search.el
View File

@ -79,14 +79,15 @@ Return t if search has been at least partially successful."
((zerop vlf-start-pos)
(throw 'end-of-file nil))
(t (vlf-tune-batch tune-types)
(let ((batch-move (- vlf-start-pos
(- vlf-batch-size
batch-step))))
(vlf-move-to-batch
(if (or is-hexl
(<= batch-move match-start-pos))
batch-move
(- match-start-pos vlf-batch-size)) t))
(let* ((batch-move (+ vlf-start-pos
batch-step))
(end (if (or is-hexl
(<= batch-move
match-start-pos))
batch-move
match-start-pos)))
(vlf-move-to-chunk (- end vlf-batch-size)
end t))
(goto-char (if (or is-hexl
(<= vlf-end-pos
match-start-pos))
@ -110,17 +111,21 @@ Return t if search has been at least partially successful."
match-end-pos (+ vlf-start-pos
(position-bytes
(match-end 0))))))
((= vlf-end-pos vlf-file-size)
((>= vlf-end-pos vlf-file-size)
(throw 'end-of-file nil))
(t (vlf-tune-batch tune-types)
(let ((batch-move (- vlf-end-pos batch-step)))
(vlf-move-to-batch
(if (or is-hexl
(< match-end-pos batch-move))
batch-move
match-end-pos) t))
(let* ((batch-move (- vlf-end-pos batch-step))
(start (if (or is-hexl
(< match-end-pos
batch-move))
batch-move
match-end-pos)))
(vlf-move-to-chunk start
(+ start vlf-batch-size)
t))
(goto-char (if (or is-hexl
(<= match-end-pos vlf-start-pos))
(<= match-end-pos
vlf-start-pos))
(point-min)
(or (byte-to-position
(- match-end-pos

4
vlf-tune.el
View File

@ -116,7 +116,7 @@ but don't change batch size. If t, measure and change."
"Initialize measurement vector."
(make-local-variable 'vlf-tune-max)
(make-local-variable 'vlf-tune-step)
(make-vector (/ vlf-tune-max vlf-tune-step) nil))
(make-vector (1- (/ vlf-tune-max vlf-tune-step)) nil))
(defmacro vlf-tune-add-measurement (vec size time)
"Add at an appropriate position in VEC new SIZE TIME measurement.
@ -345,7 +345,7 @@ Optimize over TYPES up to MAX-IDX."
(best-bps 0)
(idx 0))
(while (< idx max-idx)
(let ((bps (vlf-tune-score types idx)))
(let ((bps (vlf-tune-score types idx t)))
(and bps (< best-bps bps)
(setq best-idx idx
best-bps bps)))