在我的红宝石脚本中,我使用的是赛璐珞-zmq gem。我试图在轮询器中异步运行evaluate_response,
async.evaluate_response(socket.read_multipart)
但是,如果我从循环中删除睡眠,不知何故,那是行不通的,它没有达到“evaluate_response”方法。但是,如果我将 sleep 放在循环中,它就可以完美地工作。
require 'celluloid/zmq'
Celluloid::ZMQ.init
module Celluloid
module ZMQ
class Socket
def socket
@socket
end
end
end
end
class Indefinite
include Celluloid::ZMQ
## Readers
attr_reader :dealersock,:pullsock,:pollers
def initialize
prepare_dealersock and prepare_pullsock and prepare_pollers
end
## prepare DEALER SOCK
def prepare_dealersock
@dealersock = DealerSocket.new
@dealersock.identity = "IDENTITY"
@dealersock.connect("tcp://localhost:20482")
end
## prepare PULL SOCK
def prepare_pullsock
@pullsock = PullSocket.new
@pullsock.connect("tcp://localhost:20483")
end
## prepare the Pollers
def prepare_pollers
@pollers = ZMQ::Poller.new
@pollers.register_readable(dealersock.socket)
@pollers.register_readable(pullsock.socket)
end
def run!
loop do
pollers.poll ## this is blocking operation never mind though we need it
pollers.readables.each do |socket|
## we know socket.read_multipart is blocking call this would give celluloid the chance to run other process in mean time.
async.evaluate_response(socket.read_multipart)
end
## If you remove the sleep the async evaluate response would never be executed.
## sleep 0.2
end
end
def evaluate_response(message)
## Hmmm, the code just not reaches over here
puts "got message: #{message}"
...
...
...
...
end
end
## Code is invoked like this
Indefinite.new.run!
知道为什么会这样吗?