Coroutines and concurrency are largely orthogonal. Coroutines are a general control structure whereby flow control is cooperatively passed between two different routines without returning. The ‘yield’ statement in Python is a good example. It creates a coroutine. When the ‘yield ‘ is encountered the current state of the function is saved and control is returned … Read more
Here’s a very simple Java example of livelock where a husband and wife are trying to eat soup, but only have one spoon between them. Each spouse is too polite, and will pass the spoon if the other has not yet eaten. public class Livelock { static class Spoon { private Diner owner; public Spoon(Diner … Read more
The Google Code project does reference a technical paper on the implementation of the ring buffer, however it is a bit dry, academic and tough going for someone wanting to learn how it works. However there are some blog posts that have started to explain the internals in a more readable way. There is an … Read more
You can use GCD. It is a little more verbose than @synchronized, but works as a replacement: let serialQueue = DispatchQueue(label: “com.test.mySerialQueue”) serialQueue.sync { // code }
A lock allows only one thread to enter the part that’s locked and the lock is not shared with any other processes. A mutex is the same as a lock but it can be system wide (shared by multiple processes). A semaphore does the same as a mutex but allows x number of threads to … Read more