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kotlinlang

Is there a way to debug `Mutex` deadlocks caused by recursion?

there's the `owner` parameter, you can pass that and it will throw if you re-lock with the same `owner`

Yes, but that doesn’t help me with accidental recursion?

depends on your choice of `owner` I guess

if you were to store an element in the coroutine context, it would still be there post-recursion, so you could initialize e.g. `coroutineContext[MyDebugElement] = coroutineContext[MyDebugElement] ?: Any()`, and then pass that as the `owner`. if you recurse, then you'll use the same unique object and it'll throw

Hmm, it wouldn’t be inherited by lauched coroutines I presume?

It'd actually, unless it is replaced. That's how it works for all coroutineContext elements, like `ContinuationInterceptor` (`CoroutineDispatcher` implements it).

oh, well I guess it depends on how you launch

if you do it in `coroutineScope {}` or similar then yes

but if you're legitimately switching to a new context via a separate scope, then no