11 releases
Uses old Rust 2015
0.1.10 | Mar 30, 2022 |
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0.1.9 | Mar 30, 2022 |
0.1.8 | May 13, 2019 |
0.1.6 | Aug 3, 2018 |
#32 in Memory management
480,378 downloads per month
Used in 19 crates
13KB
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stats_alloc
An instrumenting middleware for global allocators in Rust, useful in testing for validating assumptions regarding allocation patterns, and potentially in production loads to monitor for memory leaks.
Example
extern crate stats_alloc;
use stats_alloc::{StatsAlloc, Region, INSTRUMENTED_SYSTEM};
use std::alloc::System;
#[global_allocator]
static GLOBAL: &StatsAlloc<System> = &INSTRUMENTED_SYSTEM;
fn example_using_region() {
let reg = Region::new(&GLOBAL);
let x: Vec<u8> = Vec::with_capacity(1_024);
println!("Stats at 1: {:#?}", reg.change());
// Used here to ensure that the value is not
// dropped before we check the statistics
::std::mem::size_of_val(&x);
}
Custom allocators
Currenty wrapping a custom allocator requires the use of the nightly compiler
and compiling with the "nightly" feature due to the soon to stabilize use of
the unstable const_fn_trait_bound
and the fact that the internals of the
instrumenting type are not public. If that's fine with you, a custom allocator
can be wrapped as follows:
#[global_allocator]
static GLOBAL: StatsAlloc<System> = StatsAlloc::new(MyCustomAllocator::new());