performance tuning - Setting a lower limit on calculation time

Sometimes it can come in handy to set a lower limit for a calculation. Consider for example an animation that is generated by some infinite loop, which would run way too fast to display properly for the user. For this reason, I need a function of the type "pause at least". It would be like a little brother of TimeConstrained.

I threw together the following small code which seems to do the trick, but I'm wondering whether there is a more efficient or elegant solution for this?

Here's my version if you're interested, it's pretty straightforward:

pauseAtLeast[calculation_, pause_] :=
    Block[{start, result},
        start = AbsoluteTime[];
        result = calculation;

        If[AbsoluteTime[] < start + pause,
            Pause[start + pause - AbsoluteTime[]]
        ];
        result
    ]
SetAttributes[pauseAtLeast, HoldFirst];

Usage:

(* Pauses 2 seconds *)
AbsoluteTiming@pauseAtLeast[Pause[2], 1]

(* Pauses 1 second *)
AbsoluteTiming@pauseAtLeast[Pause[.5], 1]

Comments

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