NIO benefits should be taken with a grain of salt. In a HTTP server, most connections are keep-alive connections, they are idle most of times. It would be a waste of resource to pre-allocate a thread for each. For MMORPG things are very different. I guess connections are constantly busy receiving instructions from users and … Read more
Example using C++11: #include <iostream> #include <future> #include <thread> #include <chrono> static std::string getAnswer() { std::string answer; std::cin >> answer; return answer; } int main() { std::chrono::seconds timeout(5); std::cout << “Do you even lift?” << std::endl << std::flush; std::string answer = “maybe”; //default to maybe std::future<std::string> future = std::async(getAnswer); if (future.wait_for(timeout) == std::future_status::ready) answer = … Read more
Using a separate thread is totally unnecessary. Just follow the example below for your infinite while loop instead. I use this technique in my eRCaGuy_PyTerm serial terminal program here (search the code for inWaiting() or in_waiting). Notes: To check your python3 version, run this: python3 –version My output when I first wrote and tested this … Read more
I want to add an example: #include <unistd.h> #include <fcntl.h> #include <stdio.h> int main(int argc, char const *argv[]) { char buf[20]; fcntl(0, F_SETFL, fcntl(0, F_GETFL) | O_NONBLOCK); sleep(4); int numRead = read(0, buf, 4); if (numRead > 0) { printf(“You said: %s”, buf); } } When you run this program you have 4 seconds to … Read more
To make your loop non-blocking, you must break it into sections and allow the JS event processing loop to consume user events before carrying on to the next section. The easiest way to achieve this is to do a certain amount of work, and then use setTimeout(…, 0) to queue the next chunk of work. … Read more
In the above scenario, is any kind of locking required? None. Does the above scenario require non blocking socket? The bit you’re probably worried about – the read/recv and write/send threads on an established connection – do not need to be non-blocking if you’re happy for those threads to sit there waiting to complete. That’s … Read more
I think what you’re after is the child_process.fork() API. For example, if you have the following two files: In main.js: var cp = require(‘child_process’); var child = cp.fork(‘./worker’); child.on(‘message’, function(m) { // Receive results from child process console.log(‘received: ‘ + m); }); // Send child process some work child.send(‘Please up-case this string’); In worker.js: process.on(‘message’, … Read more
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 exact … Read more
i think i got 50% of the solution, the cookies are not tested yet, but now i can load Flask application using Tornado, and mixing Tornado + Flask together 🙂 first here is flasky.py the file where the flask application is: from flask import Flask app = Flask(__name__) @app.route(‘/flask’) def hello_world(): return ‘This comes from … Read more
Go has a scheduler that lets you write synchronous code, and does context switching on its own and uses async I/O under the hood. So if you’re running several goroutines, they might run on a single system thread, and when your code is blocking from the goroutine’s view, it’s not really blocking. It’s not magic, … Read more