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libkernel: memory: heap: fix stress test #327

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Merged
hexagonal-sun merged 1 commit into from
Oct 13, 2026
Merged

libkernel: memory: heap: fix stress test #327

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11 changes: 8 additions & 3 deletions libkernel/src/memory/allocators/slab/heap.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -302,16 +302,21 @@ mod tests {
let mut allocations: Vec<(*mut u8, core::alloc::Layout, u8)> = Vec::new();

for _ in 0..ops_per_thread {
// Randomly decide to Alloc (70%) or Free (30%)
// Randomly decide to Alloc (60%) or Free (40%)
// Bias towards Alloc to build up memory pressure
if rng.random_bool(0.6) || allocations.is_empty() {
// Allocation path

// Random size: biased to small (slab), occasional huge
let size = 1024;
let size = if rng.random_bool(0.01) {
// huge alloc.
rng.random_range(4096..=16536)
} else {
rng.random_range(1..=1024)
};

// Random alignment (power of 2)
let align = 1024;
let align = 1 << rng.random_range(1..=8_usize);
let layout = core::alloc::Layout::from_size_align(size, align).unwrap();

unsafe {
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