Looking for a way to track the number of suspended...

# coroutines

[marcinmoskala]

Looking for a way to track the number of suspended coroutines in a context. My best guess for now is to make ContinuationInterceptor returning my custom continuation. Though cannot find an event on coroutine suspension. interceptContinuation is called much less often than resumeWith.

[Zach Klippenstein (he/him) [MOD]]

There's no built-in hook for suspension - at the byte code level, a suspension is just a suspend function returning the suspended sentinel value instead of the actual return value.

That said, I think the coroutine debug agent might let you derive some of the metrics you're looking for: https://github.com/Kotlin/kotlinx.coroutines/blob/master/kotlinx-coroutines-debug/README.md

[marcinmoskala]

Looked at that, but this solutions seems too heavy and too young for a production code