Vertx Sync support with ea-async or other frameworks

[Alffrredo]

I have used vertx Sync + Quasar and that is an awesome mix. but there are cases that implementing with quasar is hard obviously its java agent and transformation.
I think this can be a good feature to implement it with a simpler case like ea-async or other library for the same job.
I dont know is Vertx.Sync possible support to make a native image with GraalVM also or not.

[vietj]

I believe currently it does not work with native images because of how bytecode is generated, that being said you can contribute to vertx-sync if you want to improve it

[doctorpangloss]

I've posted the GraalVM ticket for Quasar here - oracle/graal#2546 - you're welcome to raise attention to the issue. I am also a vertx-sync user. Unfortunately based on the minimal repro I made, there will need to be more changed about how Quasar is implemented to work with Graal.

ea-async has clunkier "function coloring" i.e. everything must be CompletableFuture<> in the stack of an await call, compared to Quasar where it is just @Suspendable. This would mean that creating a runOnContext argument would be harder than it is for Quasar.

Anyway if you want something less clunky with Quasar take a look at my ticket here - puniverse/quasar#320 - to do AOT instrumentation.