Lets talk about fibers

[maik klein via Digitalmars-d]

Here is an interesting talk from Naughty Dog

http://www.gdcvault.com/play/1022186/Parallelizing-the-Naughty-Dog-Engine

They move Fibers between threads.

A rough overview:

You create task A that depends on task B. The task is submitted 
as a fiber and executed by a thread. Now task A has to wait for 
task B to finish so you hold the fiber and put it into a queue, 
you also create an atomic counter that tracks all dependencies, 
once the counter reaches 0 you know that all dependencies have 
finished.

Now you put task A into a queue and execute a different task. 
Once a thread completes a task it looks into the queue and checks 
if there is one task that has a counter of 0, which means it can 
continue to execute that task.

Now move that fiber/task onto a free thread and you can continue 
to execute that fiber.

What is the current state of fibers in D? I have asked this 
question on SO 
https://stackoverflow.com/questions/36663720/how-to-pass-a-fiber-to-a-thread