Struct RawRwLock

pub struct RawRwLock { /* private fields */ }

Raw reader-writer lock type backed by the parking lot.

Trait Implementations

impl RawRwLock for RawRwLock

const INIT: RawRwLock = _

Initial value for an unlocked RwLock.

type GuardMarker = GuardNoSend

Marker type which determines whether a lock guard should be Send. Use one of the GuardSend or GuardNoSend helper types here.

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

Attempts to acquire an exclusive lock without blocking.

unsafe fn unlock_exclusive(&self)

Releases an exclusive lock.

fn lock_shared(&self)

Acquires a shared lock, blocking the current thread until it is able to do so.

fn try_lock_shared(&self) -> bool

Attempts to acquire a shared lock without blocking.

unsafe fn unlock_shared(&self)

Releases a shared lock.

fn is_locked(&self) -> bool

Checks if this RwLock is currently locked in any way.

fn is_locked_exclusive(&self) -> bool

Check if this RwLock is currently exclusively locked.

impl RawRwLockDowngrade for RawRwLock

unsafe fn downgrade(&self)

Atomically downgrades an exclusive lock into a shared lock without allowing any thread to take an exclusive lock in the meantime.

impl RawRwLockFair for RawRwLock

unsafe fn unlock_shared_fair(&self)

Releases a shared lock using a fair unlock protocol.

unsafe fn unlock_exclusive_fair(&self)

Releases an exclusive lock using a fair unlock protocol.

unsafe fn bump_shared(&self)

Temporarily yields a shared lock to a waiting thread if there is one.

unsafe fn bump_exclusive(&self)

Temporarily yields an exclusive lock to a waiting thread if there is one.

impl RawRwLockRecursive for RawRwLock

fn lock_shared_recursive(&self)

Acquires a shared lock without deadlocking in case of a recursive lock.

fn try_lock_shared_recursive(&self) -> bool

Attempts to acquire a shared lock without deadlocking in case of a recursive lock.

impl RawRwLockRecursiveTimed for RawRwLock

fn try_lock_shared_recursive_for(&self, timeout: Self::Duration) -> bool

Attempts to acquire a shared lock until a timeout is reached, without deadlocking in case of a recursive lock.

fn try_lock_shared_recursive_until(&self, timeout: Self::Instant) -> bool

Attempts to acquire a shared lock until a timeout is reached, without deadlocking in case of a recursive lock.

impl RawRwLockTimed for RawRwLock

type Duration = Duration

Duration type used for try_lock_for.

type Instant = Instant

Instant type used for try_lock_until.

fn try_lock_shared_for(&self, timeout: Self::Duration) -> bool

Attempts to acquire a shared lock until a timeout is reached.

fn try_lock_shared_until(&self, timeout: Self::Instant) -> bool

Attempts to acquire a shared lock until a timeout is reached.

fn try_lock_exclusive_for(&self, timeout: Duration) -> bool

Attempts to acquire an exclusive lock until a timeout is reached.

fn try_lock_exclusive_until(&self, timeout: Instant) -> bool

Attempts to acquire an exclusive lock until a timeout is reached.

impl RawRwLockUpgrade for RawRwLock

fn lock_upgradable(&self)

Acquires an upgradable lock, blocking the current thread until it is able to do so.

fn try_lock_upgradable(&self) -> bool

Attempts to acquire an upgradable lock without blocking.

unsafe fn unlock_upgradable(&self)

Releases an upgradable lock.

unsafe fn upgrade(&self)

Upgrades an upgradable lock to an exclusive lock.

unsafe fn try_upgrade(&self) -> bool

Attempts to upgrade an upgradable lock to an exclusive lock without blocking.

impl RawRwLockUpgradeDowngrade for RawRwLock

unsafe fn downgrade_upgradable(&self)

Downgrades an upgradable lock to a shared lock.

unsafe fn downgrade_to_upgradable(&self)

Downgrades an exclusive lock to an upgradable lock.

impl RawRwLockUpgradeFair for RawRwLock

unsafe fn unlock_upgradable_fair(&self)

Releases an upgradable lock using a fair unlock protocol.

unsafe fn bump_upgradable(&self)

Temporarily yields an upgradable lock to a waiting thread if there is one.

impl RawRwLockUpgradeTimed for RawRwLock

fn try_lock_upgradable_until(&self, timeout: Instant) -> bool

Attempts to acquire an upgradable lock until a timeout is reached.

fn try_lock_upgradable_for(&self, timeout: Duration) -> bool

Attempts to acquire an upgradable lock until a timeout is reached.

unsafe fn try_upgrade_until(&self, timeout: Instant) -> bool

Attempts to upgrade an upgradable lock to an exclusive lock until a timeout is reached.

unsafe fn try_upgrade_for(&self, timeout: Duration) -> bool

Attempts to upgrade an upgradable lock to an exclusive lock until a timeout is reached.

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: 8 bytes