Trait lock_api::RawRwLockUpgradeFair [−][src]
pub unsafe trait RawRwLockUpgradeFair: RawRwLockUpgrade + RawRwLockFair { unsafe fn unlock_upgradable_fair(&self); unsafe fn bump_upgradable(&self) { ... } }
Additional methods for RwLocks which support upgradable locks and fair unlocking.
Required methods
unsafe fn unlock_upgradable_fair(&self)[src]
Releases an upgradable lock using a fair unlock protocol.
Safety
This method may only be called if an upgradable lock is held in the current context.
Provided methods
unsafe fn bump_upgradable(&self)[src]
Temporarily yields an upgradable lock to a waiting thread if there is one.
This method is functionally equivalent to calling unlock_upgradable_fair followed
by lock_upgradable, however it can be much more efficient in the case where there
are no waiting threads.
Safety
This method may only be called if an upgradable lock is held in the current context.