Struct accounting_allocator::AccountingAlloc

pub struct AccountingAlloc<A = System> {
    pub(crate) thread_counters: OnceBox<ThreadCounters>,
    pub(crate) allocator: A,
}

A global memory allocator wrapper which counts allocated and deallocated bytes.

Fields

thread_counters: OnceBox<ThreadCounters>

allocator: A

Implementations

impl AccountingAlloc<System>

pub const fn new() -> Self

Create a new AccountingAlloc using the System allocator.

impl<A> AccountingAlloc<A>

pub const fn with_allocator(allocator: A) -> Self

Create a new AccountingAlloc using the given allocator A.

Note that in order for AccountingAlloc<A> to implement GlobalAlloc, A must implement GlobalAlloc.

pub fn count(&self) -> AllocStats

Return the latest statistics for this allocator.

pub fn inc(&self, alloc: usize, dealloc: usize)

Increment the current thread’s (de)allocated bytes count by alloc and dealloc.

Trait Implementations

impl<A: Debug> Debug for AccountingAlloc<A>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<A: Default> Default for AccountingAlloc<A>

fn default() -> AccountingAlloc<A>

Returns the “default value” for a type.

impl<A> Display for AccountingAlloc<A>

Display the number of bytes each live thread has allocated and deallocated over all time, along with the global total.

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<A: GlobalAlloc> GlobalAlloc for AccountingAlloc<A>

unsafe fn alloc(&self, layout: Layout) -> *mut u8

Allocate memory as described by the given layout.

unsafe fn dealloc(&self, ptr: *mut u8, layout: Layout)

Deallocate the block of memory at the given ptr pointer with the given layout.

unsafe fn alloc_zeroed(&self, layout: Layout) -> *mut u8

Behaves like alloc, but also ensures that the contents are set to zero before being returned.

unsafe fn realloc(&self, ptr: *mut u8, layout: Layout, new_size: usize) -> *mut u8

Shrink or grow a block of memory to the given new_size. The block is described by the given ptr pointer and layout.