Relationship between event loop,libuv and v8 engine

The event loop is, first and foremost, a high-level concept that’s a fundamental part of the JavaScript programming model. Practically, every V8 embedder needs to implement an event loop. V8 provides a default implementation, which embedders can replace or extend. I don’t understand the question. (I guess the answer is “yes”, but what’s the difference … Read more

How is asynchronous javascript interpreted and executed in Node.js?

Basically what you are looking for is V8 Templates. It exposes all your C++ code as JavaScript functions that you can call from within the V8 Virtual Machine. You can associate C++ callbacks when functions are invoked or when specific object properties are accessed (Read Accessors and Interceptors). I found a very good article which … Read more

What does the “EXDEV: cross-device link not permitted” error mean?

It sounds like you’re trying to rename a file across “device” (partition) boundaries. Say that /tmp is a different partition than /. That means that you’re not allowed to do this: fs.rename(‘/tmp/myfile.txt’, ‘/myfile.txt’, …) (the same applies to fs.renameSync() as well, obviously) If you want to do that, you need to first copy the file … Read more

How does libuv compare to Boost/ASIO?

Scope Boost.Asio is a C++ library that started with a focus on networking, but its asynchronous I/O capabilities have been extended to other resources. Additionally, with Boost.Asio being part of the Boost libraries, its scope is slightly narrowed to prevent duplication with other Boost libraries. For example, Boost.Asio will not provide a thread abstraction, as … Read more

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