albert::util::BackgroundExecutor< T > Class Template Reference

#include <albert/backgroundexecutor.h>

Detailed Description

template<typename T>
class albert::util::BackgroundExecutor< T >

Provides a lean interface for recurring indexing tasks.

Takes care of the QtConcurrent boilerplate code to start, abort and schedule restarts of threads.

Template Parameters

T	The type of results this executor produces.

Public Member Functions
	BackgroundExecutor ()
	~BackgroundExecutor ()
void	run ()
	Run or schedule a rerun of the task.
bool	isRunning () const
	Returns true if the asynchronous computation is currently running; otherwise returns false.

Public Attributes
std::function< T(const bool &abort)>	parallel
	The task that should be executed in background.
std::function< void(T &&results)>	finish
	The results handler.
std::chrono::milliseconds	runtime
	The runtime of the last execution of parallel.

Constructor & Destructor Documentation

BackgroundExecutor()

template<typename T >

albert::util::BackgroundExecutor< T >::BackgroundExecutor ( )

inline

~BackgroundExecutor()

template<typename T >

albert::util::BackgroundExecutor< T >::~BackgroundExecutor ( )

inline

Member Function Documentation

isRunning()

template<typename T >

bool albert::util::BackgroundExecutor< T >::isRunning ( ) const

inline

Returns true if the asynchronous computation is currently running; otherwise returns false.

run()

template<typename T >

void albert::util::BackgroundExecutor< T >::run ( )

inline

Run or schedule a rerun of the task.

If a task is running this function sets the abort flag and schedules a rerun. finish will not be called for the cancelled run.

Member Data Documentation

finish

template<typename T >

std::function<void(T && results)> albert::util::BackgroundExecutor< T >::finish

The results handler.

When the parallel function finished, this function will be called in the main thread with the results returned by the parallel function.

Parameters

results

The results parallel returned.

parallel

template<typename T >

std::function<T(const bool &abort)> albert::util::BackgroundExecutor< T >::parallel

The task that should be executed in background.

This function is executed in a separate thread.

Parameters

abort

The abort flag

Returns

The results of the task.

runtime

template<typename T >

std::chrono::milliseconds albert::util::BackgroundExecutor< T >::runtime

The runtime of the last execution of parallel.

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

• workspace/albert/include/albert/backgroundexecutor.h