lua 协程的理解
参考链接:
http://www.cnblogs.com/zrtqsk/p/4374360.html
对例子的自我理解:
-- 协程的理解 -- co 是协程的内容,类似函数内容, 通过yield 将中止函数的操作, -- 但重新resume后,将继续执行co未执行到内容 function foo(a) print("foo", a) return coroutine.yield(2 * a) end co = coroutine.create(function ( a, b ) print("co-body", a, b) local r = foo(a + 1) print("co-body", r) local r, s = coroutine.yield(a + b, a - b) print("co-body", r, s) return b, "end" end) -- resume首次传递参数 yield 返回true 与 yield的参数 local c, d = coroutine.resume(co, 1, 10) print("main:", c, d) print("main", coroutine.resume(co, "r")) print("main", coroutine.resume(co, "x", "y")) print("main", coroutine.resume(co, "x", "y")) -- 执行结果 -- co-body 1 10 -- foo 2 -- main true 4 -- co-body r -- main true 11 -9 -- co-body x y -- main true 10 end -- main false cannot resume dead coroutine
lua协程是协作式多任务,用于异步通信的机制,参考链接:
http://blog.csdn.net/sharemyfree/article/details/47442115