libdispatch

I am using libDispatch (GCD) opensource on Android platform. So, most of the complex time consuming tasks are being done through NDK (where i am using libDispatch). For some calls, I am using dispatch_async(get_main_queue)...This is where the problem is coming... I am able to run tasks in the concurrent queues but not on main queue. Since this requires dispatch_main() to be called which we cannot do on here as Java thread will be blocked in that case. So, is it possible to run the Java UI on some secondary thread and hook the dispatch_main() to serve the dispatch_main_queue here? OR : Do I

I’m looking into multithreading, and GCD seems like a much better option than manually writing a solution using pthread.h and pthreads-win32 . However, although it looks like libdispatch is either working on, or soon going to be working on, most newer POSIX-compatible systems… I have to ask, what about Windows? What are the chances of libdispatch being ported to Windows? What are the barriers preventing that from happening? If it came down to it, what would I need to do to preform that portage? Edit: Some things I already know, to get the discussion started: We need a blocks-compatible

Okay, so I found out about the new Swifty Dispatch API in Xcode 8. I'm having fun using DispatchQueue.main.async , and I've been browsing around the Dispatch module in Xcode to find all the new APIs. But I also use dispatch_once to make sure that things like singleton creation and one-time setup don't get executed more than once (even in a multithreaded environment)... and dispatch_once is nowhere to be found in the new Dispatch module? static var token: dispatch_once_t = 0 func whatDoYouHear() { print("All of this has happened before, and all of it will happen again.") dispatch_once(&token) {