format code to save lines.

remove unnecessary qualifier.

passive disconnect & remove TcpConnection.

format code to save blank lines.

no double underscores.

Add diff files.

set quit_ to false before looping.

EventLoop::runInLoop(), wakeup a loop with eventfd.

update test1.cc, creating two threads.

timer queue works.

no removeChannel for now.

basic reactor works.

Add toy logging.

copy s01 from s00