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# std::mutex::mutex

From cppreference.com
< cpp‎ | thread‎ | mutex

constexpr mutex(); | (1) | (since C++11)
mutex( const mutex& ) = delete; | (2) | (since C++11)

1) Constructs the mutex. The mutex is in unlocked state after the constructor completes.
2) Copy constructor is deleted.

### [edit] Parameters

(none)

### [edit] Exceptions

`noexcept` specification:
noexcept

### [edit] Notes

Because the default constructor is `constexpr`, static mutexes are initialized as part of static non-local initialization, before any dynamic non-local initialization begins. This makes it safe to lock a mutex in a constructor of any static object.

### [edit] See also

C documentation for mtx_init

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