Coroutine utility

[MattiaFortunati]

It would be nice to have a global utility function to perform operations as coroutines, like:

function performAsCoroutine(_function, _param)
local thread = MOAICoroutine.new()
thread:run(_function, _param)
end

so in the _function we can use
coroutine.yield()

I already use this method in my projects , passing the other function to execute at the end of _function as _param.

like:

function performAsCoroutine(_function, _param)
local thread = MOAICoroutine.new()
thread:run(_function, _param)
end

function toPerformAfterCoroutine()
print("coroutine finished")
end

function fCoroutine(nextFunction)
--do something
coroutine.yield()
--other
coroutine.yield()
--other
coroutine.yield()

nextFunction()
end

performAsCoroutine(fCoroutine, toPerformAfterCoroutine)

EDIT:

A sample would be nice, too.
A loading bar sample would be great.
For a loading bar we should have two coroutines:
one for the the loading bar each step moving and yielding,
one for the GUI loading one piece and then yielding.