NAME

       std::once_flag - Flag type used by std::call_once.

SYNOPSIS

       #include <mutex>

   Public Member Functions
       once_flag (const once_flag &)=delete
           Deleted copy constructor.
       once_flag & operator= (const once_flag &)=delete
           Deleted assignment operator.

   Friends
       template<typename _Callable , typename... _Args> void call_once (once_flag &__once, _Callable &&__f,
           _Args &&... __args)
           Invoke a callable and synchronize with other calls using the same flag.

Detailed Description

       Flag type used by std::call_once.

Constructor & Destructor Documentation

   std::once_flag::once_flag (const once_flag &) [delete]
       Deleted copy constructor.

Member Function Documentation

   once_flag & std::once_flag::operator= (const once_flag &) [delete]
       Deleted assignment operator.

Friends And Related Symbol Documentation

   template<typename _Callable , typename... _Args> void call_once (once_flag & __once, _Callable && __f, _Args
       &&... __args) [friend]
       Invoke a callable and synchronize with other calls using the same flag.

Author

       Generated automatically by Doxygen for libstdc++ from the source code.

                                                    libstdc++                               std::once_flag(3cxx)