std::stoppable_token

 

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Definiert in Header <stop_token>
template< class Token > concept stoppable_token =     requires (const Token tok) {         typename /*check-type-alias-exists*/<Token::template callback_type>;         { tok.stop_requested() } noexcept -> std::same_as<bool>;         { tok.stop_possible() } noexcept -> std::same_as<bool>;         { Token(tok) } noexcept; // see implicit expression variations     } &&     std::copyable<Token> &&     std::equality_comparable<Token>;		(seit C++26)
Hilfsschablonen
template< template<class> class > struct /*check-type-alias-exists*/; // not defined		(nur Exposition*)

Das Konzept stoppable_token<Token> spezifiziert die grundlegende Schnittstelle eines Stop-Tokens, das copyable und equality_comparable ist und Abfragen ermöglicht, um festzustellen, ob die Stop-Anforderung möglich ist und ob die Anforderung gestellt wurde.

Siehe auch

unstoppable_token (C++26)

spezifiziert ein Stop-Token, das kein Stoppen erlaubt (Konzept)