Yuqian Li 190fd8eb51
Reland "Create root isolate asynchronously (#20142)" (#21747)
This reverts commit 5585ed99039efb3705025e1c58170cdb86af111b.

Additionally, the following _flutter.runInView deadlock is fixed.

Previously, a deadlock would occur when service protocol
_flutter.runInView is used to restart the engine wihtout tearing down
the shell: the shared mutex of the service protocol will be locked
during the restart as it's in the middle of handling a service protocol
message; if ServiceProtocol::AddHandler is also called during the
restart, the deadlock happens as AddHandler also requires such lock.

test/integration.shard/background_isolate_test.dart would fail
without this fix.
2020-10-12 12:02:30 -07:00
..
2020-09-11 21:18:35 -07:00