On Mon, 4 Jun 2007 03:12:08 +0700, "Владислав Чернышов" <carter.subscribe@gmail.com> said:
OK, I got it. By "async requests" I mean requests running concurrently, and I don't have to wait others to process available data. Am I right?
Yes.
Does asio use POSIX AIO in Linux implementation? I mean librt functions.
No, it uses epoll and non-blocking I/O to emulate asynchronous operations.
How to make some other work while doing i/o operations in single threaded program?
Here are two different approaches you could take: - If your program has given over control to io_service::run(), use a chain of posts() or maybe a deadline_timer to perform the work in small chunks. E.g.: void do_some_work() { // perform a small amount of work here // post this function again to do a bit more work. io_service.post(do_some_work); } - If you want the main program control to be your "other work", periodically call io_service::poll() to check for completed I/O operations and invoke the associated handlers. Cheers, Chris