Fix the race condition of thread::_trigger
Check dynamic_cast result on flared::on_storage_error()
Check dynamic_cast result on op_meta::_run_server()
Merge pull request #60 from yayugu/fix/dynamic_cast

check dynamic_cast results
Merge pull request #59 from m-yoshimo/coverity-cid-17986

Fix the race condition of thread::_trigger
fix initial value of epoll socket
Fixed socket condition add_epoll_socket and add_kqueue_socket