[kurapica.igas]

I do create a Task system with several features like :

Task.DirectCall(func, ...)           -- Call the method as soon as possible(call it directly or next phase if the operation time is fully used)
 
Task.NextCall(func, ...)            -- Call in next phase(next OnUpdate)
 
Task.DelayCall(delay, func, ...)  -- Call the func with a delay, just like the C_Timer.After
 
Task.EventCall(event, func)      -- Call the func when the event is fired, no args since the event would provide
 
Task.NoCombatCall(func, ...)   -- Call the func when the player is not in combat, used for secure frames.
 
Task.WaitCall([delay, ][event, ...,] func)  -- Call the func when meet the delay or any event is fired.
 
Task.ThreadCall(func, ...)         -- Call the func in a thread from the thread pool.

Also several features for thread only

Task.Continue()                      -- Check if the current thread should keep running or wait for next time
 
Task.Next()                           -- Make the current thread wait for next phase
 
Task.Delay(delay)                  -- Delay the current thread for several second
 
Task.Event(event)                  -- Make the current thread wait for a system event, the args would be returned
 
Task.Wait([delay, ][event, ... ,]) -- Make the current thread wait for a delay or any of the events,if it's an event, the event and it's args would be returned.

For a simple container refresh, the code would be like

local toggle = true
 
Task.ThreadCall(function()
    while toggle do
        -- Make sure the operation only process when not in combat
        if InCombatLockdown() then Task.Event("PLAYER_REGEN_ENABLED") end
 
        for bag = 0, 4 do
            for slot = 1, GetContainerNumSlots(bag) do
                -- do something
 
                -- To smooth the updating
                Task.Continue()
            end
        end
 
        -- Wait for next update
        Task.Event("BAG_UPDATE_DELAYED")
    end
end)

It'd be useful to put all codes together in some conditions.