nonblocking

Can someone explain/ redirect me, what is the difference between Node.js's async model(non blocking thread) vs any other language for example c#'s asynchronous way of handling the I/O. This looks to me that both are same model. Kindly suggest. Both models are very similar. There are two primary differences, one of which is going away soon (for some definition of "soon"). One difference is that Node.js is asynchronously single-threaded, while ASP.NET is asynchronously multi-threaded. This means the Node.js code can make some simplifying assumptions, because all your code always runs on the same

I'm wondering if it's possible to put together a fully non-blocking Clojure backend web application with http-kit. (Actually any Ring-compatible http server would be fine by me; I'm mentioning http-kit because it claims to have an event-driven, non-blocking model). EDIT: TL;DR This question is a symptom of some misconceptions I had about the nature of non-blocking/asynchronous/event-driven systems. In case you're in the same place as I was, here are some clarifications. Making an event-driven system with the performance benefits of it being non-blocking (like in Node.js) is possible only if

My incomplete understanding is that Twisted, Stackless, Greenlet, Eventlet, Coroutines all make use of async network IO and userland threads that are very lightweight and quick to switch. But I'm not sure what are the differences between them. Also they sound very similar to Erlang processes. Are they pretty much the same thing? Anyone who could help me understand this topic more would be greatly appreciated. andreypopp First of all, non-blocking I/O has nothing in common with green threads or coroutines, but it can affect how they're scheduled. Now: Twisted is a classic non-blocking I/O

Ok, Tornado is non-blocking and quite fast and it can handle a lot of standing requests easily. But I guess it's not a silver bullet and if we just blindly run Django-based or any other site with Tornado it won't give any performance boost. I couldn't find comprehensive explanation of this, so I'm asking it here: When should Tornado be used? When is it useless? When using it, what should be taken into account? How can we make inefficient site using Tornado? There is a server and a webframework. When should we use framework and when can we replace it with other one? There is a server and a

As suggested here I would like to do that inside the selector loop. What I would really want is to read contents written to system out inside my selector loop. EDIT1: I coded a complete solution just to find out that you CANNOT redirect GC logs by using System.setOut. It simply goes straight to the FD or something. Show stopper! Unless I redirect to a file and pipe this file into my selector. Lots of work! See here . One way to do it would be as follows: create a subclass of OutputStream that redirects its output to a Pipe's sink channel redirect System.out using this class: System.setOut(new

Python 2.7.3 x64 wxPython 2.8 x64 Been reading quite a bit on python threading and multiprocessing, particularly some articles by Doug Hellmann, which have helped tremendously. However, I'm confused about one thing... I thought the Python multiprocessing module was more-or-less a drop-in replacement for the threading module, excepting that args must be picklable, but I'm finding that in order not to block my GUI, I must first create a new thread with threading.Thread then multiprocess within that thread with multiprocessing.Process. This works, and works well, but it seems a bit kludgey to me.

After setting up a non blocking socket correctly I do the following to connect: Call connect on the socket. If it returns 0, I have already connected, if not, check errno. If errno is not EINPROGRESS there is an error. if errno is EINPROGRESS I can poll the connect status by: select_status = sock_select(FD_SETSIZE, NULL, &file_descriptor_set, NULL, &timeout); if select_status > 0 then check with FD_ISSET if the file descriptor is set. Is that correct? And should I check for fd_write not fd_read? Should I call getsockopt after select? With what arguments? I cannot find a clear explanation of