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Turns the mirrored module into an allocator #33

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Turns the mirrored module into an allocator #33

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gnzlbg
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@gnzlbg gnzlbg commented Mar 11, 2018

The allocator is currently trivial. It never frees any memory. Instead it caches the freed allocations into a HashMap<size, Vec<*mut ptr>>. When a new allocation is requested, it tries to reuse a previously-freed allocation from the cache.

A slice_deque::release() function is provided that frees all the currently unused memory.

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gnzlbg commented Mar 29, 2018

@bill-myers what do you think of this? It basically caches the smallest allocation in a vector, and the rest in a HashMap, and does so in thread-local caches.

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Boscop commented Mar 11, 2020

@gnzlbg Wouldn't it be faster to use fnv as the hasher for the HashMap? I'm no expert but fnv is usually recommended for small/integer keys.

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