Kaushik Iska 419d1b9cae Add the functionality to merge and unmerge MessageLoopTaskQueues (flutter/engine#9436) ...

- Add the functionality to merge and unmerge MessageLoopTaskQueues

This introduces a notion of a "owning" and "subsumed" queue ids.
Owning queue will take care of the tasks submitted to both that and it's
subsumed queue.

- The tasks submitted still maintain the queue affinity
- Same for the task observers

- Also adds MergedQueuesRunner which grabs both the locks owner
  and subsumed queues in RAII fashion.

- Also use task queue id to verify if we are running
  in the same thread.

- This is to enable merging the backed message loop task
  queues to enable dynamic thread merging in IOS.

2019-07-12 16:55:33 -07:00

..

src/flutter

Add the functionality to merge and unmerge MessageLoopTaskQueues (flutter/engine#9436)

2019-07-12 16:55:33 -07:00