51 lines
1.2 KiB
Rust
51 lines
1.2 KiB
Rust
use std::collections::HashMap;
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use fxhash::FxHashMap;
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use crate::FC;
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/// Provides heuristics to the "SharedResources" object for improving allocation performance.
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///
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/// This heuristics engine records the memory footprint of bump arenas and hook lists for each component. These records are
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/// then used later on to optimize the initial allocation for future components. This helps save large allocations later on
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/// that would slow down the diffing and initialization process.
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///
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///
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pub struct HeuristicsEngine {
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heuristics: FxHashMap<FcSlot, Heuristic>,
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}
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pub type FcSlot = *const ();
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pub struct Heuristic {
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hooks: u32,
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bump_size: u64,
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}
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impl HeuristicsEngine {
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pub(crate) fn new() -> Self {
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Self {
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heuristics: FxHashMap::default(),
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}
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}
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fn recommend<T>(&mut self, fc: FC<T>, heuristic: Heuristic) {
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let g = fc as FcSlot;
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let e = self.heuristics.entry(g);
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}
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fn get_recommendation<T>(&mut self, fc: FC<T>) -> &Heuristic {
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let id = fc as FcSlot;
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self.heuristics.entry(id).or_insert(Heuristic {
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bump_size: 100,
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hooks: 10,
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})
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}
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}
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#[test]
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fn types_work() {
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let engine = HeuristicsEngine::new();
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}
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