Struct RcStats 

pub struct RcStats {
    pub increments: u64,
    pub decrements: u64,
    pub deallocations: u64,
    pub elided_increments: u64,
    pub elided_decrements: u64,
    pub inplace_mutations: u64,
    pub copy_on_write: u64,
    pub peak_rc: u32,
}

Statistics about reference counting operations.

Fields

increments: u64

Total number of RC increments.

decrements: u64

Total number of RC decrements.

deallocations: u64

Total number of deallocations (rc reached 0).

elided_increments: u64

Total number of elided increments.

elided_decrements: u64

Total number of elided decrements.

inplace_mutations: u64

Total number of in-place mutations (unique owner).

copy_on_write: u64

Total number of copy-on-write operations.

peak_rc: u32

Peak reference count observed.

Implementations

impl RcStats

pub fn new() -> Self

Create new empty statistics.

pub fn record_inc(&mut self)

Record an RC increment.

pub fn record_dec(&mut self)

Record an RC decrement.

pub fn record_dealloc(&mut self)

Record a deallocation.

pub fn record_elided_inc(&mut self)

Record an elided increment.

pub fn record_elided_dec(&mut self)

Record an elided decrement.

pub fn record_inplace_mutation(&mut self)

Record an in-place mutation.

pub fn record_cow(&mut self)

Record a copy-on-write operation.

pub fn update_peak(&mut self, rc: u32)

Update the peak RC if necessary.

pub fn total_ops(&self) -> u64

Total RC operations (not elided).

pub fn total_elided(&self) -> u64

Total elided operations.

pub fn elision_ratio(&self) -> f64

Elision ratio.

pub fn merge(&mut self, other: &RcStats)

Merge with another stats instance.

pub fn reset(&mut self)

Reset all statistics.

Trait Implementations

impl Clone for RcStats

fn clone(&self) -> RcStats

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RcStats

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

Formats the value using the given formatter.

impl Default for RcStats

fn default() -> RcStats

Returns the “default value” for a type.

impl Display for RcStats

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

Formats the value using the given formatter.