A spin off from bug 1048024 comment 41. dhylands is working on a patch.

I'm actually working on a patch to make b2g-info and get_about_memory not care whether the process is named Nuwa or not. It looks at the pid, ppid, and the executable name to figure out which are child and master processes.

Comment on attachment 8469041 [details] PR for get_about_memory.py This is for get_about_memory.py actually, there're two minor comments.

Comment on attachment 8469042 [details] PR for b2g-info r=me after double check getuid() is needed, and the side effect from b2g_processes() is acceptable.

Dave, thank you for such a quick response. But I guess we still need to know why Nuwa is not renaming itself? I couldn't repro on my Flame though.

https://github.com/mozilla-b2g/gonk-misc/commit/6822004d07064ea3ebbc0c94cd2e15be6a02069d https://github.com/mozilla-b2g/B2G/commit/a5411c63509332d35a1566e10a9f40d8752fd32a With these commits, b2g-info and get_about_memory.py should both work even when the Nuwa process doesn't get renamed. I'm still seeing the Nuwa process showing with the name b2g: > 2563 >adb shell b2g-ps > APPLICATION SEC USER PID PPID VSIZE RSS WCHAN PC NAME > b2g 0 root 306 1 170820 84144 ffffffff 00000000 S /system/b2g/b2g > b2g 0 root 457 306 55680 5536 ffffffff 00000000 S /system/b2g/b2g > Built-in Keyboa 2 u0_a943 943 306 88824 33688 ffffffff 00000000 S /system/b2g/plugin-container > Homescreen 2 u0_a945 945 306 85348 38480 ffffffff 00000000 S /system/b2g/plugin-container

I just read your updated b2g_processes() to address the side effect, and found a problem. If you run |adb shell b2g-info -m|, main_process() will go through the for loop twice and complain there are two b2g main process which are the same pid. It's because main_process() is reentrant when m_main_process hasn't been set. The same problem happens when you do a |adb shell b2g-info -p| or |adb shell b2g-info -c|.

Addresses the reentrancy problem.

Comment on attachment 8469292 [details] PR for b2g-info (part 2) I'll put tchou down to review unless I can find somebody else sooner.

Comment on attachment 8469292 [details] PR for b2g-info (part 2) r=me