| std::once_flag(3cxx) | std::once_flag(3cxx) |
std::once_flag - Flag type used by std::call_once.
constexpr once_flag () noexcept=default
Constructor. once_flag (const once_flag &)=delete
Deleted copy constructor. once_flag & operator= (const
once_flag &)=delete
Deleted assignment operator.
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.
Flag type used by std::call_once.
Definition at line 672 of file mutex.
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| Sun Jan 10 2021 | libstdc++ |