QXmppPromise< T > Class Template Reference

Create and update QXmppTask objects to communicate results of asynchronous operations. More...

#include <QXmppTask.h>

Public Member Functions
	QXmppPromise (const QXmppPromise< T > &p)
	QXmppPromise (QXmppPromise< T > &&p)
	Move constructor.
QXmppPromise< T > &	operator= (const QXmppPromise< T > &p)
QXmppPromise< T > &	operator= (QXmppPromise< T > &&p)
	Move assignment operator.
QXmppTask< T >	task ()
void	finish ()
template<typename U> requires (!std::is_void_v<T>)
void	finish (U &&value)
bool	cancelled () const

Friends
class	QXmppTask< T >

Detailed Description

template<typename T>
class QXmppPromise< T >

Create and update QXmppTask objects to communicate results of asynchronous operations.

Unlike QFuture, this is not thread-safe. This avoids the need to do mutex locking at every access though.

Since

QXmpp 1.5

Constructor & Destructor Documentation

QXmppPromise()

template<typename T>

QXmppPromise< T >::QXmppPromise ( const QXmppPromise< T > & p )

inline

Deprecated

Copying a promise creates shared ownership via heap allocation. Move the promise instead.

Member Function Documentation

cancelled()

template<typename T>

bool QXmppPromise< T >::cancelled ( ) const

inline

Returns whether the task has been cancelled.

If a task is cancelled, no call to finish() is needed and no continuation is resumed.

Since

QXmpp 1.11

finish() [1/2]

template<typename T>

void QXmppPromise< T >::finish ( )

inline

Finishes task.

Must be called only once.

finish() [2/2]

template<typename T>

template<typename U>
requires (!std::is_void_v<T>)

void QXmppPromise< T >::finish ( U && value )

inline

Finishes task with result.

Must be called only once.

operator=()

template<typename T>

QXmppPromise< T > & QXmppPromise< T >::operator= ( const QXmppPromise< T > & p )

inline

Deprecated

Copying a promise creates shared ownership via heap allocation. Move the promise instead.

task()

template<typename T>

QXmppTask< T > QXmppPromise< T >::task ( )

inline

Obtain a handle to this promise that allows to obtain the value that will be produced asynchronously.

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The documentation for this class was generated from the following file:

• QXmppTask.h