std::lock_guard (3) - Linux Man Pages
Defined in header <mutex>
template< class Mutex >
The class lock_guard is a mutex wrapper that provides a convenient RAII-style mechanism for owning a mutex for the duration of a scoped block.
When a lock_guard object is created, it attempts to take ownership of the mutex it is given. When control leaves the scope in which the lock_guard object was created, the lock_guard is destructed and the mutex is released.
The lock_guard class is non-copyable.
Mutex - the type of the mutex to lock. The type must meet the BasicLockable requirements
Member type Definition
constructor (public member function)
destructor (public member function)
operator= not copy-assignable
// Run this code
The following behavior-changing defect reports were applied retroactively to previously published C++ standards.
DR Applied to Behavior as published Correct behavior
LWG_2981 C++17 redundant deduction guide from lock_guard<Mutex> was provided removed
unique_lock implements movable mutex ownership wrapper
scoped_lock deadlock-avoiding RAII wrapper for multiple mutexes