Add support for returning displaced entries for re-use. #22
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Here is how the altered method can be used. |
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Byron
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Aug 22, 2021
…tions…" This reverts commit 8d49976. Wait for servo/uluru#22 to land.
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Thanks, this is great. I don't think it needs to be an optional feature, though. You can use I'll merge this PR, and then push a follow-up to make it always use the new method. |
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Absolutely awesome, thank you! Also thanks for removing the feature toggle, there is so much I don't know about |
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I added this to be able to avoid allocations if the entry is allocating, In case of
gitoxidethis saves a couple of millions of allocations in favour of a few thousand re-allocs.Performance wasn't measurably better in my case, just as if the allocator can already repurpose previously freed slabs of memory pretty well or at only a very low cost.
Since it doesn't seem to hurt providing this capability, I am creating this PR anyway in the hopes it does indeed make sense to some in this form or another.
Please let me know :).