5 // Executor replace go keyword to start a new goroutine
6 // the goroutine should cancel itself if the context passed in has been cancelled
7 // the goroutine started by the executor, is owned by the executor
8 // we can cancel all executors owned by the executor just by stop the executor itself
9 // however Executor interface does not Stop method, the one starting and owning executor
10 // should use the concrete type of executor, instead of this interface.
11 type Executor interface {
12 // Go starts a new goroutine controlled by the context
13 Go(handler func(ctx context.Context))