Lua之协同程序coroutine代码实例

技术  /  管理员 发布于 5年前   495

do--create coroutine table--coroutine state: suspended, running, dead, normal--when create the coroutine, the status is suspended, After calling it, the status is dead--get the coroutine status by the way coroutine.statuslocal coA = 0;local coB = 0;function createCoroutineA()coA = coroutine.create(function()--for i = 0, 10 doprint("coA: ", 0);print("coB status: ", coroutine.status(coB)); --normal statusprint("coA status: ", coroutine.status(coA));print("coA coroutine next status");--coroutine.yield();--the current coroutine is suspended--endend);print("From coA to resume coB");endfunction createCoroutineB()coB = coroutine.create(function()--for i = 0, 10 doprint("coB: ", 0);print("coA status: ", coroutine.status(coA));coroutine.resume(coA); --when resume coA, the coB will suspended, calling coB ,the coA status is--suspended and dead, this time will continue to execute the next codeprint("coB status: ", coroutine.status(coB));print("coB coroutine next status");--coroutine.yield();--endend);print("From coB to resume coA");end--display the coA and coB statuscreateCoroutineA();print(coroutine.status(coA));createCoroutineB();print(coroutine.status(coB));coroutine.resume(coB);print(coroutine.resume(coB)); --if the coroutine is dead ,the resume will resume false, and can't resume the dead coroutine--print("coA status: ", coroutine.status(coA));--print("coB status: ", coroutine.status(coB));end

注：
resume得到返回值，
如果有对应的yield在wait resume，那么yield的参数作为resum的返回值，第一个返回值表示coroutine没有错误，后面的返回值个数及其值视yeild参数而定。
如果没有yield在wait,那么返回值是对应函数的返回值,:true,* * *

do--create coroutine table--coroutine state: suspended, running, dead, normal--when create the coroutine, the status is suspended, After calling it, the status is dead--get the coroutine status by the way coroutine.statuslocal coA = 0;local coB = 0;function createCoroutineA()coA = coroutine.create(function(paramA, paramB)--for i = 0, 10 doprint("coA: ", 0);coroutine.yield(paramA, paramB);--the current coroutine is suspended--endreturn 100, 200;end);print("From coA to resume coB");endfunction createCoroutineB()coB = coroutine.create(function()--for i = 0, 10 doprint("coB: ", 0);print("coA status: ", coroutine.status(coA));coroutine.resume(coA); --when resume coA, the coB will suspended, calling coB ,the coA status is--suspended and dead, this time will continue to execute the next codeprint("coB status: ", coroutine.status(coB));print("coB coroutine next status");--coroutine.yield();--endend);print("From coB to resume coA");endcreateCoroutineA();--if not yield is waiting ,the return values that the main function return as the results of the resume--or the return as the yield paramsprint( coroutine.resume(coA, 10, 20));--OutPut:true, 10, 20end