An async/await implement for gopher-lua.
go get github.com/CuberL/glua-async
First, you need to modify your blocking function by wrapping the blocking part(sleep, i/o, etc) in async.AsyncRun. And the return values of the async.AsyncRun will be the return values of the await.
func Sleep(L *lua.LState) int {
sec := L.CheckInt(1)
caller := L.CheckString(2)
async.AsyncRun(func() []lua.LValue {
time.Sleep(time.Second * time.Duration(sec))
return []lua.LValue{lua.LString(caller)}
}, L)
return 0
}And you can use it in your function. Use async to start a coroutine and use await to wait some blocking result in an async function.
function main(str)
-- A
async(function()
for i=3, 1, -1 do
result = await(sleep, 1, "a")
print("it's "..result)
end
end)
-- B
async(function()
for i=3, 1, -1 do
result = await(sleep, 2, "b")
print("it's "..result)
end
end)
-- C
async(function()
for i=3, 1, -1 do
result = await(sleep, 3, "c")
print("it's "..result)
end
end)
return str
endFinally, you can call main function, and you also need to wrap your function in async.WrapAsyncFunc.
L.CallByParam(lua.P{
Fn: async.WrapAsyncFunc(L, L.GetGlobal("main").(*lua.LFunction)),
NRet: 1,
Protect: true,
}, lua.LString("hello"))
for i := 1; i <= L.GetTop(); i++ {
log.Println(L.Get(i).String())
}
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