merges aio into default branch

replaces eventfd with pipe and closes aio branch aio

moves IOStream creation to the sessionhandler aio

adds IO threadpool aio

adds vfs pread/pwrite functions aio

using non-blocking IO for SSL_accept aio

adds platform independent aio functions aio

fixes aio error handling aio

implements new event handler and aio on linux aio

fixes async sendfile aio

(0) -100 -10 +10 +100 +300 tip

mercurial