Issues when use ultra to profile native cpp game

[jsjtxietian]

Hi, first of all, thanks for this awesome library! I always wanted to have a good tool for converting etw trace to gecko json format because I love the firefox prolfiler's UI, and before ultra I found https://github.com/mstange/samply, which is pretty great but there's some problem when dealing with my game's pdb, so I gave it up. And then I found ultra, simple, elegant and fast, I love it. Although ultra is not built for a native cpp game like my use case but it simply works out of box, which is pretty awesome, thank you so much.

I found some cases where it can be improved for my use case, IMHO I should raise it here for discussion

• I find my game's main thread is named as "Startup thread", not the real name "GameThread", likely because ultra did not listen to the ThreadSetName event? I hacked it to print all names set and I can find the "GameThread" there
• when method index is invalid, the func name is simply output as raw adress, IMHO it can have a moduleName as prefix, like "xxx.dll!0x1234"
• I find the symbolication process a bit slow dispite I have local symbol cache, maybe it's because I'm in China, I will investigate more on this and find out why it's slow. Update: My game has around 1200 symbols to load and it's just a for loop, IMHO it may not be easy to parallel the for loop, maybe can parallel the trace thread converting part?

Thanks and looking forward to get some feedback!