...

The main benefit of structured concurrency is abstraction.  A caller of a method that is invoked to do a task should not care if the method decomposes the task and schedules a million fibers. When the method completes, any fibers scheduled by the method should have terminated.

More informationBackground reading:

    Nathaniel J. Smith: Notes on structured concurrency, or: Go statement considered harmful

    Martin Sustrik: Structured Concurrency

...

scope1 is entered with a deadline that is now + 10s. It schedules a fiber in scope2 and cannot exit to scope1 until the fiber terminates. If the deadline expires in the meantime then the fiber will be cancelled and the thread/fiber will throw CancelledException(“Deadline expired”) when existing scope1. If the inner scope had a deadline that was further into the future that the deadline then the deadline for the outer scope will expire first.

Termination queues

Code Examples

Issues/Discussion points