# std::timed_mutex

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< cpp‎ | thread

Defined in header `<mutex>` |  |
class timed_mutex; |  | (since C++11)

The `timed_mutex` class is a synchronization primitive that can be used to protect shared data from being simultaneously accessed by multiple threads.

In a manner similar to `mutex`, `timed_mutex` offers exclusive, non-recursive ownership semantics. In addition, `timed_mutex` provides the ability to attempt to claim ownership of a `timed_mutex` with a timeout via the `try_lock_for()` and `try_lock_until()` methods.

The `timed_mutex` class satisfies all requirements of `TimedMutex` and `StandardLayoutType`.

### Member types

Member type | Definition
`native_handle_type`(optional) | implementation-defined

### Member functions

(constructor) | constructs the mutex (public member function)
(destructor) | destroys the mutex (public member function)
operator= [deleted] | not copy-assignable (public member function)

##### Locking

lock | locks the mutex, blocks if the mutex is not available (public member function)
try_lock | tries to lock the mutex, returns if the mutex is not available (public member function)
try_lock_for | tries to lock the mutex, returns if the mutex has been unavailable for the specified timeout duration (public member function)
try_lock_until | tries to lock the mutex, returns if the mutex has been unavailable until specified time point has been reached (public member function)
unlock | unlocks the mutex (public member function)

##### Native handle

native_handle | returns the underlying implementation-defined thread handle (public member function)

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