[][src]Struct lock_api::Mutex

pub struct Mutex<R: RawMutex, T: ?Sized> { /* fields omitted */ }

A mutual exclusion primitive useful for protecting shared data

This mutex will block threads waiting for the lock to become available. The mutex can also be statically initialized or created via a new constructor. Each mutex has a type parameter which represents the data that it is protecting. The data can only be accessed through the RAII guards returned from lock and try_lock, which guarantees that the data is only ever accessed when the mutex is locked.

Methods

impl<R: RawMutex, T> Mutex<R, T>
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Creates a new mutex in an unlocked state ready for use.

Consumes this mutex, returning the underlying data.

impl<R: RawMutex, T: ?Sized> Mutex<R, T>
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Acquires a mutex, blocking the current thread until it is able to do so.

This function will block the local thread until it is available to acquire the mutex. Upon returning, the thread is the only thread with the mutex held. An RAII guard is returned to allow scoped unlock of the lock. When the guard goes out of scope, the mutex will be unlocked.

Attempts to lock a mutex in the thread which already holds the lock will result in a deadlock.

Attempts to acquire this lock.

If the lock could not be acquired at this time, then None is returned. Otherwise, an RAII guard is returned. The lock will be unlocked when the guard is dropped.

This function does not block.

Returns a mutable reference to the underlying data.

Since this call borrows the Mutex mutably, no actual locking needs to take place---the mutable borrow statically guarantees no locks exist.

Forcibly unlocks the mutex.

This is useful when combined with mem::forget to hold a lock without the need to maintain a MutexGuard object alive, for example when dealing with FFI.

Safety

This method must only be called if the current thread logically owns a MutexGuard but that guard has be discarded using mem::forget. Behavior is undefined if a mutex is unlocked when not locked.

Returns the underlying raw mutex object.

Note that you will most likely need to import the RawMutex trait from lock_api to be able to call functions on the raw mutex.

Safety

This method is unsafe because it allows unlocking a mutex while still holding a reference to a MutexGuard.

impl<R: RawMutexFair, T: ?Sized> Mutex<R, T>
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Forcibly unlocks the mutex using a fair unlock procotol.

This is useful when combined with mem::forget to hold a lock without the need to maintain a MutexGuard object alive, for example when dealing with FFI.

Safety

This method must only be called if the current thread logically owns a MutexGuard but that guard has be discarded using mem::forget. Behavior is undefined if a mutex is unlocked when not locked.

impl<R: RawMutexTimed, T: ?Sized> Mutex<R, T>
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Attempts to acquire this lock until a timeout is reached.

If the lock could not be acquired before the timeout expired, then None is returned. Otherwise, an RAII guard is returned. The lock will be unlocked when the guard is dropped.

Attempts to acquire this lock until a timeout is reached.

If the lock could not be acquired before the timeout expired, then None is returned. Otherwise, an RAII guard is returned. The lock will be unlocked when the guard is dropped.

Trait Implementations

impl<R: RawMutex, T: ?Sized + Debug> Debug for Mutex<R, T>
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impl<R: RawMutex + Sync, T: ?Sized + Send> Sync for Mutex<R, T>
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impl<R: RawMutex + Send, T: ?Sized + Send> Send for Mutex<R, T>
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impl<R: RawMutex, T> From<T> for Mutex<R, T>
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impl<R: RawMutex, T: ?Sized + Default> Default for Mutex<R, T>
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Blanket Implementations

impl<T, U> TryFrom for T where
    T: From<U>, 
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🔬 This is a nightly-only experimental API. (try_from)

The type returned in the event of a conversion error.

impl<T> From for T
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impl<T, U> TryInto for T where
    U: TryFrom<T>, 
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🔬 This is a nightly-only experimental API. (try_from)

The type returned in the event of a conversion error.

impl<T, U> Into for T where
    U: From<T>, 
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impl<T> Borrow for T where
    T: ?Sized
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impl<T> BorrowMut for T where
    T: ?Sized
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impl<T> Any for T where
    T: 'static + ?Sized
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