Coroutine's status is suspended when a function that it calls uses a method that yields

Help and Feedback Scripting Support
,
#1

I want to make an easy to use data storage module

It needs to use coroutines to avoid jamming, but when i use GetAsync inside of a function in the coroutine it’s status changes to suspended

I have tried a repeat loop to wait until it suspends, but that gets bypassed entirely by this bug I have included the relevant code

getOrderedData function

local function getOrderedData(dataStore: OrderedDataStore): (boolean, DataStorePages | errorType)
	
	local attempts: number = 0
	local success: boolean = false
	local response: any = nil
	local overallResponse: {[string]: number} = {}
	
	repeat
		
		success, response = pcall(dataStore.GetSortedAsync, dataStore, false, 1) --right when this line runs the coroutine suspends
		
		if not success then
			overallResponse[response] = overallResponse[response] + 1 or 1
			attempts += 1
			task.wait(10)
		else
			overallResponse = response
		end
		
	until attempts >= 5 or success
	
	return success, overallResponse
end

getDataFromDataStore function

function module.schema.getDataFromDataStore(self: dataStore, key: string, default: data?): (boolean, data? | errorType)
	
	if self.gettingStores[key] then return false, "this datastore is already being accessed, please try again later. if this is incorrect, please make a report to the developers" end
	
	local coro = coroutine.create(function()
		
		self.gettingStores[key] = true
		
		local orderedDataStore: OrderedDataStore = DSS:GetOrderedDataStore(key.."/"..self.name)
		local globalDataStore: GlobalDataStore = DSS:GetDataStore(key.."/"..self.name)
		
		local attempts: number = 0
		local data: string = nil
		local success: boolean = false
		local response: data | errorType = nil
		local backup: boolean = false
		local versionGotten: number = 0
		local errorLog: {[string]: number} = {}
		
		local orderedSuccess: boolean, response: DataStorePages | errorType = getOrderedData(orderedDataStore) --this is when the coroutine gets suspended
--i have trimmed out irrelevant code, i only have it up to where the problem is caused.
end

edit: yes i know this is similar to one of my previous posts, but that one got no help and some of the info in it turned out to be wrong.

1 Like
#2

Use coroutine.wrap instead of coroutine.create
When using coroutine.wrap , the coroutine will automatically resume after the GetAsync call (or any other yielding call) completes.

#3

have you tried using response.key and response.value?

#4

i have done coroutine.wrap. the problem is that it temporarily suspends for the yielding call and then resumes shortly after, so it messes up the order of the code.

#5

what would those do? the response variable would either be an error code or a datastorepages object

#7

Yeah my bad, not very helpful advice, considered running after using coroutine.create coroutine.resume perhaps? Keep in mind task.spawn returns a thread that you can pause and yield as well.