topic Deadlock in 100.8 in .NET Maps SDK Questions

Deadlock in 100.8

MattRickard — Wed, 01 Jul 2020 21:10:11 GMT

I asked a question recently about deadlocks in 100.7.

Michael Branscomb‌ answered my question and I upgraded to 100.8

That upgrade made my experience much better, but as our testers have used it more, deadlocks are still occurring.

The callstacks are a little different than what I had seen in 100.7.

I have attached a txt file with the callstack details.

In the minidump I got from him, there are 45 threads waiting at mtx_do_lock.

The summary of threads is:

Esri_runtimecore::Geo_views::Map_view::set_viewpoint_
Esri_runtimecore::Map_renderer::Canvas_drawable::highlight_color
- from addlayer
Esri_runtimecore::Map_renderer::Map::copy_display_properties(void)
- from CoreGeoView.Pulse
Esri_runtimecore::Geo_views::Geo_view::update_attribution_(void)
- There are a lot of threads with this same callstack.

The second attachment, "100.8.hang2.txt" is an example when I was debugging.

The summary is:

Esri_runtimecore::Geo_views::Map_view::set_view_insets_
- on the main/dispatcher thread
Esri_runtimecore::Geo_views::Geo_view::update_attribution_
- 2 threads with this callstack this time.
Esri_runtimecore::Map_renderer::Canvas_drawable::highlight_color
- from addlayer
Esri_runtimecore::Map_renderer::Map::copy_display_properties
- from CoreGeoView.Pulse

Any ideas?

Thanks,

Matt

Re: Deadlock in 100.8

MattRickard — Thu, 16 Jul 2020 14:06:05 GMT

Any feedback on this Michael Branscomb‌? This is becoming a more prevalent issue with our user base.

FYI, we are doing some off-screen rendering of a map for printing, as recommended by Rex Hansen.

This may be contributing to the problem, but certainly not the sole cause.

Re: Deadlock in 100.8

MichaelBranscomb — Sun, 16 Aug 2020 17:10:27 GMT

Hi,

Can you provide more information regarding:

- The system/environment (ideally a dxdiag report from 2-3 machines on which you are able to reproduce the issue you are seeing)

- What your application is doing at the time of the hang (if you are able to ascertain that) (e.g. user zoomed in)

- The composition of the map in terms of basemap layers (e.g. vector tiled layer), operational layers (e.g. feature layers from service feature table), and graphics overlays.

- Any specific UI interactions you have running e.g. identify on mouse move.

If you're not able to share here - please email mbranscomb@esri.com.

Thanks

Mike