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ce624be8b8
* Minor updates to the min & max cache sizes (16 & 64MB). Mostly to satisfy my power-of-two OCD. * Purge broken on-disk cache files * Optimize free RAM computations * Start dropping LRU items when running low on memory before pre-rendring (hinting) pages in non-reflowable documents. * Make serialize dump the most recently *displayed* page, as the actual MRU item is the most recently *hinted* page, not the current one. * Use more accurate item size estimations across the whole codebase. TileCacheItem: * Drop lua-serialize in favor of Persist. KoptInterface: * Drop lua-serialize in favor of Persist. * Make KOPTContext caching actually work by ensuring its hash is stable.
23 lines
628 B
Lua
23 lines
628 B
Lua
--[[
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Inheritable abstraction for cache items
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--]]
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local CacheItem = {
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size = 128, -- some reasonable default for a small table.
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}
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--- NOTE: As far as size estimations go, the assumption is that a key, value pair should roughly take two words,
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--- and the most common items we cache are Geom-like tables (i.e., 4 key-value pairs).
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--- That's generally a low estimation, especially for larger tables, where memory allocation trickery may be happening.
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function CacheItem:new(o)
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o = o or {}
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setmetatable(o, self)
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self.__index = self
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return o
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end
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function CacheItem:onFree()
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end
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return CacheItem
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