std::once_flag(3)          Library Functions Manual          std::once_flag(3)

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(3)