Struct RawRwSemaphore 

pub struct RawRwSemaphore { /* private fields */ }

Raw implementation of a sleeping reader/writer semaphore.

A writer prevents new readers through its PI mutex, then waits for existing readers to drain. Existing readers have no single owner to receive PI; they must finish their critical sections, as with Linux rwbase_rt.

Implementations

impl RawRwSemaphore

pub const fn new() -> Self

Creates a sleeping reader/writer semaphore with ordinary task waits.

Trait Implementations

impl Default for RawRwSemaphore

fn default() -> Self

Returns the “default value” for a type.

impl RawRwLock for RawRwSemaphore

const INIT: Self

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_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.