std::lock_guard

 

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std::lock_guard

Member functions

lock_guard::lock_guard

lock_guard::~lock_guard

 

Defined in header <mutex>
template< class Mutex > class lock_guard;		(since C++11)

The class lock_guard implements a strictly scope-based mutex ownership wrapper. The class is non-copyable. The supplied Mutex type shall implement the Lockable concept.

Member types

Member type	Definition
mutex_type	Mutex

Member functions

(constructor)	constructs new lock_guard object and locks the given mutex (public member function)
(destructor)	destructs the lock_guard object, unlocks the underlying mutex (public member function)

Example

std::mutex m;
 
void do_something()
{
    std::lock_guard<std::mutex> lock(m);
    // the remaining function is thread-safe now
}