Expose vm service API to give me ObjRef by object.

[polina-c]

It is needed for leak_tracker.

So that it does not have to full scan all instances searching for hash code.
This will also simplify the leak tracker code, as it will not have to account for possible hash code duplicates

[polina-c]

@a-siva
@rmacnak-google
@bkonyi

[polina-c]

Current implementation of object lookup: https://github.com/dart-lang/leak_tracker/blob/10cce1af65da33daf8268e82ca6e4557235c1a25/pkgs/leak_tracker/lib/src/leak_tracking/retaining_path/_retaining_path.dart#L57

Instead I want to pass object, that I can keep with weak reference.

[polina-c]

In order to invoke service.getRetainingPath, I need isolateId as well. Is there a way to get it for an object? If no, is it possible to expose Service.getIsolateIdForObject as well?

[bkonyi]

possible

You're looking for Service.getIsolateId.

[derekxu16]

I think you also need Isolate.current from dart:isolate (https://api.flutter.dev/flutter/dart-isolate/Isolate/current.html).

[polina-c]

possible

You're looking for Service.getIsolateId.

It wants Isolate as parameter

[bkonyi]

Yes, you can get that with Isolate.current as Derek pointed out.

[polina-c]

I think you also need Isolate.current from dart:isolate (https://api.flutter.dev/flutter/dart-isolate/Isolate/current.html).

I tried to use it and got confused.
getRetainingPath wants String isolateId, while I do not see anything close in the Isolate in dart:isolate: https://api.flutter.dev/flutter/dart-isolate/Isolate-class.html

@derekxu16, can you help me to figure this out?

[derekxu16]

Service.getIsolateId(Isolate.current) should give you the string you need.