Lua编程示例（八）：生产者-消费者问题_Lua_

 function receive(prod) print("receive is called") local status,value = coroutine.resume(prod) return value end function send(x,prod) print("send is called") return coroutine.yield(x) end function producer() return coroutine.create(function () print("producer is called") while true do print("producer run again") local x = io.read() send(x) end end) end function filter(prod) return coroutine.create(function () for line = 1,1000 do print("enter fliter "..line) local x = receive(prod) print("receive in filter finished") x= string.format("%5d %s",line,x) send(x,prod) end end) end function consumer(prod) print("consumer is called") while true do print("consumer run again") local x = receive(prod) print("retrun customer") io.write(x,"\n") end end p = producer() f=filter(p) consumer(f) 

 consumer is called consumer run again receive is called enter fliter 1 receive is called producer is called producer run again fsy send is called receive in filter finished send is called retrun customer 1 fsy consumer run again receive is called enter fliter 2 receive is called producer run again gaga send is called receive in filter finished send is called retrun customer 2 gaga consumer run again receive is called enter fliter 3 receive is called producer run again ......