template<class C> explicit stop_callback( const std::stop_token& st, C&& cb ) noexcept(/*see below*/); | (1) | (since C++20) |
template<class C> explicit stop_callback( std::stop_token&& st, C&& cb ) noexcept(/*see below*/); | (2) | (since C++20) |
stop_callback( const stop_callback& ) = delete; | (3) | (since C++20) |
stop_callback( stop_callback&& ) = delete; | (4) | (since C++20) |
Constructs a new stop_callback object, saving and registering the cb callback function into the given std::stop_token's associated stop-state, for later invocation if stop is requested on the associated std::stop_source.
stop_callback for the given st std::stop_token (copied), with the given invocable callback function cb.stop_callback for the given st std::stop_token (moved), with the given invocable callback function cb.Both constructors participate overload resolution only if Callback and C satisfy constructible_from of std::constructible_from<Callback, C>. If Callback and C satisfy the concept but fail to satisfy its semantic requirement, the behavior is undefined.
| st | - | a std::stop_token object to register this stop_callback object with |
| cb | - | the type to invoke if stop is requested |
noexcept specification: noexcept(std::is_nothrow_constructible_v<Callback, C>)stop_callback object.If st.stop_requested() == true for the passed-in std::stop_token, then the callback function is invoked in the current thread before the constructor returns.
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