Struct Counter 

pub struct Counter { /* private fields */ }

Fleet-wide keyed signed counters.

A missing key starts at zero for increment and decrement. Both methods return the value after their atomic update. reset installs a missing key or atomically returns an existing value to zero.

Implementations

impl Counter

pub fn new(fleet: Arc<Fleet>) -> Result<Counter, Error>

pub fn get(&self, key: &str) -> Result<Option<i64>, Error>

pub fn increment(&self, key: &str, by: i64) -> Result<i64, Error>

pub fn decrement(&self, key: &str, by: i64) -> Result<i64, Error>

pub fn reset(&self, key: &str) -> Result<(), Error>

Atomically set a key to zero, installing it when necessary.

pub fn reset_all(&self) -> Result<(), Error>

Clear the complete table during quiescent owner boot.

pub fn unlink(&self) -> Result<(), Error>

Remove the counter SHM object. Existing mappings remain valid until their processes release them.

Trait Implementations

impl Clone for Counter

fn clone(&self) -> Counter

Returns a duplicate of the value.

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

Performs copy-assignment from source.