Trait holochain::prelude::dependencies::kitsune_p2p_types::dependencies::lair_keystore_api::dependencies::parking_lot::lock_api::RawRwLock
pub unsafe trait RawRwLock {
type GuardMarker;
const INIT: Self;
// Required methods
fn lock_shared(&self);
fn try_lock_shared(&self) -> bool;
unsafe fn unlock_shared(&self);
fn lock_exclusive(&self);
fn try_lock_exclusive(&self) -> bool;
unsafe fn unlock_exclusive(&self);
// Provided methods
fn is_locked(&self) -> bool { ... }
fn is_locked_exclusive(&self) -> bool { ... }
}Expand description
Basic operations for a reader-writer lock.
Types implementing this trait can be used by RwLock to form a safe and
fully-functioning RwLock type.
Safety
Implementations of this trait must ensure that the RwLock is actually
exclusive: an exclusive lock can’t be acquired while an exclusive or shared
lock exists, and a shared lock can’t be acquire while an exclusive lock
exists.
Required Associated Types§
type GuardMarker
type GuardMarker
Marker type which determines whether a lock guard should be Send. Use
one of the GuardSend or GuardNoSend helper types here.
Required Associated Constants§
const INIT: Self
const INIT: Self
Initial value for an unlocked RwLock.
Required Methods§
Acquires a shared lock, blocking the current thread until it is able to do so.
Attempts to acquire a shared lock without blocking.
Releases a shared lock.
Safety
This method may only be called if a shared lock is held in the current context.
fn lock_exclusive(&self)
fn lock_exclusive(&self)
Acquires an exclusive lock, blocking the current thread until it is able to do so.
fn try_lock_exclusive(&self) -> bool
fn try_lock_exclusive(&self) -> bool
Attempts to acquire an exclusive lock without blocking.
unsafe fn unlock_exclusive(&self)
unsafe fn unlock_exclusive(&self)
Releases an exclusive lock.
Safety
This method may only be called if an exclusive lock is held in the current context.
Provided Methods§
fn is_locked_exclusive(&self) -> bool
fn is_locked_exclusive(&self) -> bool
Check if this RwLock is currently exclusively locked.