[Lldb-commits] [lldb] [lldb][telemetry] Implement LLDB Telemetry (part 1) (PR #119716)

[Pavel Labath via lldb-commits]

https://github.com/labath commented:

I think this looks okay so far. @JDevlieghere, do you have anything to add?

The interesting part will be wiring this up with initialization and all the call sites (which is now complicated by the fact that this code is conditionally compiled.

Before you get too much into the plugin manager, let me say that I *don't* think it makes sense emulating the "normal" plugin setup for this functionality. It's true that this is meant to be pluggable in a way, so calling it *a* plugin sounds reasonable. However, it's a very different kind of a plugin from all of our other plugins. The complexity of those plugins comes from the fact that we have *multiple* implementations (classes) of those plugins, which can create an *arbitrary number* of instances (objects) of that class, at *arbitrary points in time* (e.g. each time we open an object file).

Pretty much none of this applies here. As I understand it, we're going to have *at most one implementation* of the plugin (at most one *active* instance at least), this implementation is going to have *at most one instance* (since we're sharing it between debugger objects), and we're going to be creating it directly *at startup*.

With that in mind, I think it'd be sufficient to have something like `TelemetryManager::SetInstance()`, and have that be called from the `Initialize()` static method of the plugin. (None of the fancy CreateInstance methods, callbacks, etc.)

https://github.com/llvm/llvm-project/pull/119716