std::lock_guard<Mutex>:: lock_guard

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std::lock_guard
Member functions
lock_guard::lock_guard
explicit lock_guard ( mutex_type & m ) ;
(1) (since C++11)
lock_guard ( mutex_type & m, std:: adopt_lock_t t ) ;
(2) (since C++11)
lock_guard ( const lock_guard & ) = delete ;
(3) (since C++11)

Acquires ownership of the given mutex m .

1) Effectively calls m. lock ( ) .
2) Acquires ownership of the mutex m without attempting to lock it. The behavior is undefined if the current thread does not hold a non-shared lock (i.e., a lock acquired by lock , try_lock , try_lock_for , or try_lock_until ) on m .
3) Copy constructor is deleted.

The behavior is undefined if m is destroyed before the lock_guard object is.

Parameters

m - mutex to acquire ownership of
t - tag parameter used to select non-locking version of the constructor

Exceptions

1) Throws any exceptions thrown by m. lock ( ) .
2) Throws nothing.
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