Debugging webrtc C++ code in Android Studio

[Luca Vitucci]

Hello,

I managed to compile WebRTC according to the docs on WebRTC.org, however I'm wondering if someone could help me in setting up a debugging environment on a different machine.

The problem is, I'm importing the libraries (Both the Jar and the .so) in another project where I'm using them successfully, but I can't configure Android Studio to debug native issues, as it cannot find any symbol.

What I'm trying so far:

- Setting the symbol directories to point to `out/Debug/lib.unstripped`

- Using the library from `out/Debug/lib.unstripped` in the actual app

- Pointing the symbol directories to `out/Debug/obj` and various subdirectories

My debugger simply does not stop on c++ breakpoints, does not show symbols when a crash happens inside WebRTC and does not stop on Symbolic breakpoints. Also, LLDB image won't find any symbols related to WebRTC.

I'm pretty new to debugging native libs with Android Studio, Can anyone help me with this?

Thanks.

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[Sami Kalliomäki]

I am not aware of any way to do this in Android Studio. I use:

./build/android/adb_gdb --output-directory=out/Debug org.appspot.apprtc --cgdb

This has lots of issues though, sometimes you cannot inspect the variables etc. If you find a way to make this work in Android Studio, please let me know.

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[Luca Vitucci]

This actually does not work for me, when pointing it to my own app (not apprtc, but obviously with the same build of webrtc) I don't get webrtc symbols in cgdb...

are you using it with a separate app or with apprtc? 

And are you using the unstripped library in the app's build?

And finally, are you maybe configuring gn with some specific flag for debugging?

I am also still trying to work with android studio and LLDB, but getting cgdb to work would be a big success.

Thanks,

Luca

[Sami Kalliomäki]

I am using it with AppRTCMobile. I just use "is_debug = True". One thing is that I have to actually start a call in AppRTCMobile before the symbols are actually loaded.

To view this discussion on the web visit https://groups.google.com/d/msgid/discuss-webrtc/658edbbd-f4e4-41db-a979-f492b211d080%40googlegroups.com.

[Luca Vitucci]

Ok, thank you. At least now I'm able to debug, however I'm not able to print any variable (No symbol "name" in current context.), still trying to understand this one.

[Peter Liu]

add "android_full_debug=true symbol_level=2" along with "is_debug = true" can resolve your problem.

在 2018年3月23日星期五 UTC+8下午6:07:59，Luca Vitucci写道：

[Евгений Лукьяненко]

Hi

I solved this problem by shamanism with additional settings in Debug Configurations:

It was tested with AppRTCMobile.

Edit configuration settings -> Debugger -> Symbol directories.

("Debug type" was set "Native only" in my case)

I just added the same paths that were specified for libjingle_peerconnection_so.so:

Et voila:

понедельник, 9 апреля 2018 г. в 10:51:23 UTC+5, Peter Liu:

[醉翁]

Hi @Евгений Лукьяненко.
 I see you fix this issue.I'm same to this issue.

Could you show us about how fix this issue step by step?

thanks!

[qiang wang]

Hi @Евгений Лукьяненко.

pls give us some detail infos.  I had config the symbol directory... , but still can't debug it.