[QGIS-Developer] qgis 3: proper way to kill a long running processing alghorithm

[enrico chiaradia]

Hi list,

what is the proper way to stop a very long processing alghorithm running 
in QGIS 3 in a python plugin?
In my plugin under QGIS 2, I assigned to the GeoAlgorithm a custom 
AlgorithmDialog that stops the running thread when the "closing event" 
happens (i.e. when the user clicks on the close button in the dialog).
The long running function is in fact a new object of class QThread (not 
sure that is the best solution but it works perfectly under QGIS 2).
Is there a similar way also in QGIS 3? Are there the equivalents to 
AlgorithmDialog class and the getCustomParametersDialog function of 
GeoAlgorithm?

Thanks,

enrico

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