Struct RwLock 

pub struct RwLock<T>(/* private fields */);

Reader-writer lock backed by a futex.

Drop-in replacement for parking_lot::RwLock<T>. Non-fair: new readers are not blocked by waiting writers.

Additional methods beyond parking_lot:

• is_locked_exclusive() — true when a write lock is held
• get_n_waiters() — number of threads waiting (read + write)
• reader_count() — number of active readers

Implementations

impl<T> RwLock<T>

pub fn new(val: T) -> Self

Creates a new RwLock wrapping val.

pub fn read(&self) -> RwLockReadGuard<'_, T>

Acquires a shared (read) lock, blocking until available.

pub fn write(&self) -> RwLockWriteGuard<'_, T>

Acquires an exclusive (write) lock, blocking until available.

pub fn try_read(&self) -> Option<RwLockReadGuard<'_, T>>

Tries to acquire a shared lock without blocking.

pub fn try_write(&self) -> Option<RwLockWriteGuard<'_, T>>

Tries to acquire an exclusive lock without blocking.

pub fn try_read_for(&self, timeout: Duration) -> Option<RwLockReadGuard<'_, T>>

Tries to acquire a shared lock within the given timeout.

pub fn try_write_for( &self, timeout: Duration, ) -> Option<RwLockWriteGuard<'_, T>>

Tries to acquire an exclusive lock within the given timeout.

pub fn is_locked(&self) -> bool

Returns true if the lock is held by any reader or by the exclusive writer.

pub fn is_locked_exclusive(&self) -> bool

Returns true if the write (exclusive) lock is currently held.

pub fn get_n_waiters(&self) -> usize

Returns the total number of threads waiting to acquire this lock.

pub fn reader_count(&self) -> u32

Returns the number of active readers.

pub fn raw(&self) -> &NoxuRawRwLock

Returns a reference to the raw NoxuRawRwLock.