packaged_task Class

Describes an asynchronous provider that is a call wrapper whose call signature is Ty(ArgTypes...). Its associated asynchronous state holds a copy of its callable object in addition to the potential result.

template<class>
class packaged_task;

Members

Public Constructors

Name	Description
packaged_task::packaged_task Constructor	Constructs a packaged_task object.
packaged_task::~packaged_task Destructor	Destroys a packaged_task object.

Public Methods

Name	Description
packaged_task::get_future Method	Returns a future object that has the same associated asynchronous state.
packaged_task::make_ready_at_thread_exit Method	Calls the callable object that's stored in the associated asynchronous state and atomically stores the returned value.
packaged_task::reset Method	Replaces the associated asynchronous state.
packaged_task::swap Method	Exchanges the associated asynchronous state with that of a specified object.
packaged_task::valid Method	Specifies whether the object has an associated asynchronous state.

Public Operators

Name	Description
packaged_task::operator= Operator	Transfers an associated asynchronous state from a specified object.
packaged_task::operator() Operator	Calls the callable object that's stored in the associated asynchronous state, atomically stores the returned value, and sets the state to ready.
packaged_task::operator bool Operator	Specifies whether the object has an associated asynchronous state.

Requirements

Header: future

Namespace: std

See Also

Reference

<future>

Other Resources

C++ Standard Library Header Files