Trait DowngradableWriteGuard 

pub trait DowngradableWriteGuard: DerefMut {
    type DowngradeResult: Deref<Target = Self::Target>;
    type DowngradeToUpgradableResult: UpgradableReadGuard<UpgradeToDowngradableResult = Self, Target = Self::Target>;

    // Required methods
    fn downgrade(self) -> Self::DowngradeResult;
    fn downgrade_to_upgradable(self) -> Self::DowngradeToUpgradableResult;
}

Provides an interface for downgrading downgradable write guards.

Example

See the GuardedTarget docs for implementation examples.

Required Associated Types

type DowngradeResult: Deref<Target = Self::Target>

Self::downgrade return type.

type DowngradeToUpgradableResult: UpgradableReadGuard<UpgradeToDowngradableResult = Self, Target = Self::Target>

Self::downgrade_to_upgradable return type.

Required Methods

fn downgrade(self) -> Self::DowngradeResult

Downgrades the write guard to a read guard.

fn downgrade_to_upgradable(self) -> Self::DowngradeToUpgradableResult

Downgrades the write guard to an upgradable read guard.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<'a, T: ?Sized> DowngradableWriteGuard for &'a mut T

type DowngradeResult = &'a mut T

type DowngradeToUpgradableResult = &'a mut T

fn downgrade(self) -> Self

fn downgrade_to_upgradable(self) -> Self

impl<'a, T> DowngradableWriteGuard for RwLockWriteGuard<'a, T>

type DowngradeResult = RwLockReadGuard<'a, RawRwLock, T>

type DowngradeToUpgradableResult = RwLockUpgradableReadGuard<'a, RawRwLock, T>

fn downgrade(self) -> RwLockReadGuard<'a, T>

fn downgrade_to_upgradable(self) -> RwLockUpgradableReadGuard<'a, T>

Implementors