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fix(multitude): memory leaks #508
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|---|---|---|
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@@ -608,3 +608,5 @@ u32 | |
| POV | ||
| lossy | ||
| unrounded | ||
| unpadded | ||
| unyielded | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,105 @@ | ||
| // Copyright (c) Microsoft Corporation. | ||
| // Licensed under the MIT License. | ||
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| //! Builds an `Arc<[Arc<[u8]>]>` of `PROPERTIES` binary blobs two ways and | ||
| //! compares them: `std::sync::Arc` (global allocator) vs `multitude::Arc` | ||
| #![allow(clippy::unwrap_used, reason = "benchmark code")] | ||
| #![allow(clippy::missing_panics_doc, reason = "benchmark code")] | ||
| #![allow(unused_results, reason = "benchmark code")] | ||
| #![allow(clippy::std_instead_of_core, reason = "benchmark code")] | ||
| #![allow(dead_code, reason = "array properties are held only to keep the allocation alive")] | ||
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||
| use std::hint::black_box; | ||
| use std::sync::Arc as StdArc; | ||
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||
| use criterion::{Criterion, criterion_group, criterion_main}; | ||
| use multitude::{Arc as ArenaArc, Arena}; | ||
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| // --------------------------------------------------------------------------- | ||
| // Array shape: `PROPERTIES` binary blobs of `PROPERTY_SIZE` bytes each. | ||
| // --------------------------------------------------------------------------- | ||
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| const PROPERTIES: usize = 8; | ||
| const PROPERTY_SIZE: usize = 16; | ||
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| // --------------------------------------------------------------------------- | ||
| // Global-allocator array | ||
| // --------------------------------------------------------------------------- | ||
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| fn build_global(payload: &[u8]) -> StdArc<[StdArc<[u8]>]> { | ||
| let mut properties = Vec::with_capacity(PROPERTIES); | ||
| for _ in 0..PROPERTIES { | ||
| properties.push(StdArc::<[u8]>::from(payload)); | ||
| } | ||
| StdArc::from(properties) | ||
| } | ||
|
|
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| fn build_global_from_slice(properties: &[StdArc<[u8]>]) -> StdArc<[StdArc<[u8]>]> { | ||
|
geeknoid marked this conversation as resolved.
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| StdArc::from(properties) | ||
| } | ||
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| // --------------------------------------------------------------------------- | ||
| // Arena-backed array | ||
| // --------------------------------------------------------------------------- | ||
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| fn build_arena(arena: &Arena, payload: &[u8]) -> ArenaArc<[ArenaArc<[u8]>]> { | ||
| let mut properties = arena.alloc_vec_with_capacity::<ArenaArc<[u8]>>(PROPERTIES); | ||
| for _ in 0..PROPERTIES { | ||
| properties.push(arena.alloc_slice_copy_arc(payload)); | ||
| } | ||
| properties.try_into_arc().unwrap() | ||
| } | ||
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| fn build_arena_from_slice(arena: &Arena, properties: &[StdArc<[u8]>]) -> ArenaArc<[StdArc<[u8]>]> { | ||
| arena.alloc_slice_clone_arc(properties) | ||
| } | ||
|
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| fn global_properties(payload: &[u8]) -> Vec<StdArc<[u8]>> { | ||
| (0..PROPERTIES).map(|_| StdArc::<[u8]>::from(payload)).collect() | ||
| } | ||
|
|
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| // --------------------------------------------------------------------------- | ||
| // Criterion timing + per-iteration allocation tracking | ||
| // --------------------------------------------------------------------------- | ||
|
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| fn bench_arc_array(c: &mut Criterion) { | ||
| let payload = vec![0xABu8; PROPERTY_SIZE]; | ||
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| let mut group = c.benchmark_group("arc_array"); | ||
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| group.bench_function("global", |b| { | ||
| b.iter(|| { | ||
| black_box(build_global(black_box(&payload))); | ||
| }); | ||
| }); | ||
|
|
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| let arena = Arena::new(); | ||
| black_box(build_arena(&arena, &payload)); | ||
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| group.bench_function("arena", |b| { | ||
| b.iter(|| { | ||
| black_box(build_arena(&arena, black_box(&payload))); | ||
| }); | ||
| }); | ||
|
|
||
| let global_props = global_properties(&payload); | ||
| group.bench_function("global_from_slice", |b| { | ||
| b.iter(|| { | ||
| black_box(build_global_from_slice(black_box(&global_props))); | ||
| }); | ||
| }); | ||
|
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| let work_arena = Arena::new(); | ||
| black_box(build_arena_from_slice(&work_arena, &global_props)); | ||
|
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| group.bench_function("arena_from_slice", |b| { | ||
| b.iter(|| { | ||
| black_box(build_arena_from_slice(&work_arena, black_box(&global_props))); | ||
| }); | ||
| }); | ||
|
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| group.finish(); | ||
| } | ||
|
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| criterion_group!(benches, bench_arc_array); | ||
| criterion_main!(benches); | ||
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