Progress handle for functions which can be slow

[dyollb]

It would be nice to have a way to get progress feedback from functions like make_mesh_3,

In some cases these callbacks could simply set a info string (or status int), which says what is currently being done. For make_mesh_3 the current number of cells/points could regularly be updated. Some functions might also be able to estimate completion in percent.

On the other hand, the progress info object could have an interruption flag, which the "function", e.g. make_mesh_3, could periodically check and stop accordingly.

[dyollb]

just an idea...
as an alternative to the interruption flag, there could be some 'boost::this_thread::interruption_point' calls in the make_mesh_3 function, which would allow for interrupting via interrupt().

[dyollb]

ups, spinning that idea further: I could implant some of those myself, via e.g. a sizing function.

[sloriot]

@sgiraudot This might be a candidate to test your progress handling class.

[dyollb]

Sorry, but I don't understand. What do you mean by "this"? Which candidate can I test? The next release, a specific branch ...? Thanks

[sloriot]

@sgiraudot is working on a generic progress tracker, my previous message was directed to him.

[janetournois]

PR #1036 suggests a new solution for progress tracking