#include <QtConcurrent>

Functions
template<typename RunnerT, typename FinishT>
QFutureWatcher< void > *	runAsync (RunnerT runner, FinishT finish, QObject *context)
	Runs a function asynchronously and triggers another function when finished.

Function Documentation

◆ runAsync()

template<typename RunnerT, typename FinishT>

QFutureWatcher< void > * runAsync	(	RunnerT	runner,
		FinishT	finish,
		QObject *	context )

Runs a function asynchronously and triggers another function when finished.

Note: See notes on context parameter about taking care of aborting the function (or at least its finished handling) when the program is terminated!

Parameters

runner	the function to run asynchronously, can be a lambda or a member function
finish	the function to run after the main task (runner) is done; it's linked via signal-slot mechanism, so this runs in whatever thread it "belongs" to
context	the object in whose context the finish function should run. (should?) serve two purposes: context provides thread that finish function runs in; and when context deleted, so are connections) TODO: STOP THREAD - through future watcher? - not possible - according to Qt documentation, QFutureWatcher returned by QtConcurrent::run does not support cancelling. second purpose behind it is that once the object context links to is destroyed, so is the connection; used to handle for example the case of terminating the application; if you pass a context object here that automatically gets destroyed with the application (e.g. some GUI element), then your finished handler also gets disconnected; if it's a long-running operation, you might need to take other measures that the operation itself is aborted too (see e.g. iAJobListView who calls abort on any jobs added to it which have an abort listener registered)