Trait UpgradableReadGuard 

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

    // Required methods
    fn upgrade(self) -> Self::UpgradeResult;
    fn upgrade_to_downgradable(self) -> Self::UpgradeToDowngradableResult;
}

Provides an interface for upgrading upgradable read guards.

Example

See the GuardedTarget docs for implementation examples.

Required Associated Types

type UpgradeResult: DerefMut<Target = Self::Target>

Self::upgrade return type.

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

Self::upgrade_to_downgradable return type.

Required Methods

fn upgrade(self) -> Self::UpgradeResult

Generalizes RwLockUpgradableReadGuard::upgrade.

fn upgrade_to_downgradable(self) -> Self::UpgradeToDowngradableResult

Self::upgrade analogue, which return type can be downgraded.

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> UpgradableReadGuard for &'a mut T

type UpgradeResult = &'a mut T

type UpgradeToDowngradableResult = &'a mut T

fn upgrade(self) -> Self

fn upgrade_to_downgradable(self) -> Self

impl<'a, T> UpgradableReadGuard for RwLockUpgradableReadGuard<'a, T>

type UpgradeResult = RwLockWriteGuard<'a, RawRwLock, T>

type UpgradeToDowngradableResult = RwLockWriteGuard<'a, RawRwLock, T>

fn upgrade(self) -> RwLockWriteGuard<'a, T>

fn upgrade_to_downgradable(self) -> RwLockWriteGuard<'a, T>

Implementors