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std::once_flag(3cxx) std::once_flag(3cxx)

NAME

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

SYNOPSIS

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.

Definition at line 674 of file mutex.

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 Function 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.

Definition at line 772 of file mutex.

Author

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Wed Jul 28 2021 libstdc++