Mercurial > prosody-hg
diff util/cache.lua @ 13174:8ec7b7d6556f
util.cache: Keep eviction candidate if callback resized to make room
Previously either the old or the new values would be rejected, even if
the cache was resized to allow more items.
| author | Kim Alvefur <zash@zash.se> |
|---|---|
| date | Fri, 30 Jun 2023 22:01:49 +0200 |
| parents | c4c06fbb7d87 |
| children | bbdaa770b955 |
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--- a/util/cache.lua Fri Jun 30 18:51:03 2023 +0200 +++ b/util/cache.lua Fri Jun 30 22:01:49 2023 +0200 @@ -54,12 +54,17 @@ if self._count == self.size then local tail = self._tail; local on_evict, evicted_key, evicted_value = self._on_evict, tail.key, tail.value; - if on_evict ~= nil and (on_evict == false or on_evict(evicted_key, evicted_value) == false) then + + local do_evict = on_evict and on_evict(evicted_key, evicted_value); + + if do_evict == false then -- Cache is full, and we're not allowed to evict return false; + elseif self._count == self.size then + -- Cache wasn't grown + _remove(self, tail); + self._data[evicted_key] = nil; end - _remove(self, tail); - self._data[evicted_key] = nil; end m = { key = k, value = v, prev = nil, next = nil };