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Cache: Rewrite based on lua-lru

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Ought to be faster than our naive array-based approach.
Especially for the glyph cache, which has a solid amount of elements,
and is mostly cache hits.
(There are few things worse for performance in Lua than
table.remove @ !tail and table.insert @ !tail, which this was full of :/).

DocCache: New module that's now an actual Cache instance instead of a
weird hack. Replaces "Cache" (the instance) as used across Document &
co.
Only Cache instance with on-disk persistence.

ImageCache: Update to new Cache.

GlyphCache: Update to new Cache.
Also, actually free glyph bbs on eviction.
This commit is contained in:
NiLuJe
2021-05-04 23:13:24 +02:00
parent ce624be8b8
commit 21b067792d
15 changed files with 243 additions and 229 deletions
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6
frontend/apps/reader/modules/readerzooming.lua
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@@ -1,6 +1,6 @@
local Cache = require("cache")
local ConfirmBox = require("ui/widget/confirmbox")
local Device = require("device")
local DocCache = require("document/doccache")
local Event = require("ui/event")
local Geom = require("ui/geometry")
local GestureRange = require("ui/gesturerange")
@@ -458,9 +458,9 @@ function ReaderZooming:getZoom(pageno)
or self.zoom_factor
zoom = zoom_w * zoom_factor
end
if zoom and zoom > 10 and not Cache:willAccept(zoom * (self.dimen.w * self.dimen.h + 512)) then
if zoom and zoom > 10 and not DocCache:willAccept(zoom * (self.dimen.w * self.dimen.h + 512)) then
logger.dbg("zoom too large, adjusting")
while not Cache:willAccept(zoom * (self.dimen.w * self.dimen.h + 512)) do
while not DocCache:willAccept(zoom * (self.dimen.w * self.dimen.h + 512)) do
if zoom > 100 then
zoom = zoom - 50
elseif zoom > 10 then