Struct jemalloc_ctl::thread::DeallocatedP

pub struct DeallocatedP(_);

A type providing access to the total number of bytes deallocated by the current thread.

The get method doesn't return the value directly, but actually a pointer to the value. This allows for very fast repeated lookup, since there is no function call overhead. The pointer type cannot be sent to other threads, but DeallocatedP::get can be called on different threads and will return the appropriate pointer for each of them.

Example

use jemalloc_ctl::thread::DeallocatedP;

let deallocated = DeallocatedP::new().unwrap();
let deallocated = deallocated.get().unwrap();

let a = deallocated.get();
let buf = vec![0; 1024 * 1024];
let b = deallocated.get();
drop(buf);
let c = deallocated.get();

assert_eq!(a, b);
assert!(b < c);

Methods

impl DeallocatedP

pub fn new() -> Result<DeallocatedP>

Returns a new Deallocated.

pub fn get(&self) -> Result<ThreadLocal<u64>>

Returns a thread-local pointer to the total number of bytes deallocated by this thread.

Trait Implementations

impl Copy for DeallocatedP

impl Clone for DeallocatedP

fn clone(&self) -> DeallocatedP

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.