Struct hermit_sync::RawRwSpinLock

pub struct RawRwSpinLock { /* private fields */ }

A simple spinning, read-preferring readers-writer lock with exponential backoff.

Trait Implementations

impl RawRwLock for RawRwSpinLock

const INIT: Self = _

Initial value for an unlocked RwLock.

type GuardMarker = GuardSend

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

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 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 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 RawRwSpinLock

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 RawRwLockRecursive for RawRwSpinLock

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 RawRwLockUpgrade for RawRwSpinLock

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 RawRwSpinLock

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.