The function template std::async runs the function f asynchronously (potentially in a separate thread which might be a part of a thread pool) and returns a std::future that will eventually hold the result of …

An asynchronous operation (performed via std::async, std::packaged_task, or std::promise) can provide a std::future object to the creator of that asynchronous operation. The creator of the asynchronous …

A coroutine is a function that can suspend execution to be resumed later. Coroutines are stackless: they suspend execution by returning to the caller, and the data that is required to resume execution is …

Waits for the result to become available. Blocks until specified timeout_duration has elapsed or the result becomes available, whichever comes first. The return value identifies the state of the result. If …

The Execution control library provides a framework for managing asynchronous execution on generic execution resources. The library aims to provide vocabulary types for asynchronous operations and …

std::launch is a BitmaskType. It specifies the launch policy for a task executed by the std::async function. Constants The following constants denoting individual bits are defined by the standard library:

Futures The standard library provides facilities to obtain values that are returned and to catch exceptions that are thrown by asynchronous tasks (i.e. functions launched in separate threads). These values …

The class template std::promise provides a facility to store a value or an exception that is later acquired asynchronously via a std::future object created by the std::promise object. Note that the std::promise …

The C++ Extensions for Networking, ISO/IEC TS 19216:2018, defines new components for the C++ standard library listed on this page. The Networking TS is based on the C++14 standard as modified …

Blocks until the result becomes available. valid() == true after the call. The behavior is undefined if valid () == false before the call to this function.