Crate allocation_counter
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This crate provides a method to count allocations while running some code.
Example
Add as a dependency - since including the trait replaces the global memory allocator, you most likely want it gated behind a feature:
[features]
count-allocations = ["allocation-counter"]
[dependencies]
allocation-counter = { version = "0", optional = true }
Tests can now be written to assert that the number of desired memory allocations are not exceeded:
#[cfg(feature = "count-allocations")]
#[test]
pub fn no_memory_allocations() {
let allocations = allocation_counter::count(|| {
code_that_should_not_allocate_memory();
});
assert_eq!(allocations, 0);
}
Run the tests with the necessary feature enabled:
cargo test --features count-allocations
Functions
- Run a closure while counting the performed memory allocations.