Struct MutCfg 

pub struct MutCfg<T> { /* private fields */ }

A mutable configuration object.

Internally, this is just a RwLock<Arc<T>>; this type just defines some convenience wrappers for it.

Implementations

impl<T> MutCfg<T>

pub fn new(config: T) -> Self

Return a new MutCfg with the provided value.

pub fn get(&self) -> Arc<T>

Return the current configuration

pub fn check_and_replace(&self, old_config: &Arc<T>, new_config: T) -> bool

If this configuration object is still the same pointer as old_config, replace it with new_config.

Returns true if it was in fact replaced.

pub fn replace(&self, new_config: T)

Replace this configuration with new_config.

pub fn map_and_replace<F>(&self, func: F)

where F: FnOnce(&Arc<T>) -> T,

Replace the current configuration with the results of evaluating func on it.

Trait Implementations

impl<T: Debug> Debug for MutCfg<T>

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

Formats the value using the given formatter.

impl<T: Default> Default for MutCfg<T>

fn default() -> MutCfg<T>

Returns the “default value” for a type.

impl<T> From<T> for MutCfg<T>

fn from(config: T) -> MutCfg<T>

Converts to this type from the input type.

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 24 bytes