event-loop

Is there any way to integrate Boost.Asio with Qt4 (preferred) or GTK main loop? GTK provides poll(2) like API so technically is should be possible. Qt provides its own networking layer, however I prefer to use existing code written for Boost.Asio. I want to integrate them without using an additional thread. Is there any reference how to do this for Qt4 (preferred) or GTKmm? Thanks. Edit I want to clearify several things to make the answer easier. Both Qt and GTKmm provide "select like" functionality: http://qt-project.org/doc/qt-5.0/qtcore/qsocketnotifier.html http://www.gtkmm.org/docs/glibmm

I have read a lot of related documents.But I still can't understand how it works. const fs = require('fs') const now = Date.now(); setTimeout(() => console.log('timer'), 10); fs.readFile(__filename, () => console.log('readfile')); setImmediate(() => console.log('immediate')); while(Date.now() - now < 1000) { } const now = Date.now(); setImmediate(() => console.log('immediate')); setTimeout(() => console.log('timer'), 10); while(Date.now() - now < 1000) { } I think the first piece of code should log: readfile immediate And the second piece of code logs. timer immediate I think it is ok. Problem

If you have worked with gui toolkits, you know that there is a event-loop/main-loop that should be executed after everything is done, and that will keep the application alive and responsive to different events. For example, for Qt, you would do this in main(): int main() { QApplication app(argc, argv); // init code return app.exec(); } Which in this case, app.exec() is the application's main-loop. The obvious way to implement this kind of loop would be: void exec() { while (1) { process_events(); // create a thread for each new event (possibly?) } } But this caps the CPU to 100% and is

I can not understand how the following code run. Why "1" is after "b" but "h" is after "3"? Should'n the order is: a, b, 1, 2, h, 3? Some article said that the difference between "event loop queue" and "job queue" leads to following output. But how? I have read the specification of ECMAScript 2015 - 8.4 Jobs and Job Queues , wanting to know how Promise'job works, but it makes me more confused. Can someone help me? Thank you! var promise = new Promise(function(resolve, reject) {resolve(1)}); promise.then(function(resolve) {console.log(1)}); console.log('a'); promise.then(function(resolve)

I would like to start a blocking function in an Executor using the asyncio call loop.run_in_executor and then cancel it later, but that doesn't seem to be working for me. Here is the code: import asyncio import time from concurrent.futures import ThreadPoolExecutor def blocking_func(seconds_to_block): for i in range(seconds_to_block): print('blocking {}/{}'.format(i, seconds_to_block)) time.sleep(1) print('done blocking {}'.format(seconds_to_block)) @asyncio.coroutine def non_blocking_func(seconds): for i in range(seconds): print('yielding {}/{}'.format(i, seconds)) yield from asyncio.sleep(1)