On Mon, Jul 5, 2010 at 6:15 PM, Bo Xie wrote:

As I know, Boost.Asio is for asynchronous network socket, not asynchronous file read/write.  Is there any asynchronous file read/write Boost (or other cross platform) lib?

On mmap() capable platforms your can actually use asio. To do so, mmap your file and create a asio::mutable_buffer out of the resulting ptr. On that you can do your asynchronous IO. HTH, Stephan