Created
September 27, 2021 22:24
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| use std::{ | |
| alloc::{GlobalAlloc, Layout, System}, | |
| sync::atomic::{AtomicUsize, Ordering}, | |
| }; | |
| pub struct Allocator { | |
| inner: System, | |
| counter: AtomicUsize, | |
| } | |
| unsafe impl GlobalAlloc for Allocator { | |
| unsafe fn alloc(&self, layout: Layout) -> *mut u8 { | |
| self.counter.fetch_add(layout.size(), Ordering::SeqCst); | |
| self.inner.alloc(layout) | |
| } | |
| unsafe fn dealloc(&self, ptr: *mut u8, layout: Layout) { | |
| self.inner.dealloc(ptr, layout); | |
| self.counter.fetch_sub(layout.size(), Ordering::SeqCst); | |
| } | |
| } | |
| impl Allocator { | |
| pub const fn new() -> Self { | |
| Self { | |
| inner: System, | |
| counter: AtomicUsize::new(0), | |
| } | |
| } | |
| pub fn reset(&self) { | |
| self.counter.store(0, Ordering::SeqCst); | |
| } | |
| pub fn get(&self) -> usize { | |
| self.counter.load(Ordering::SeqCst) | |
| } | |
| } |
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