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    use std::cell::Cell;
    use time;

    pub trait Time {
    	fn get(&self) -> time::Timespec;
    }

    #[derive(Default, Debug)]
    pub struct RealTime;

    impl Time for RealTime {
    	fn get(&self) -> time::Timespec {
    		time::get_time()
    	}
    }

    #[derive(Default)]
    pub struct IncrementalTime {
    	counter: Cell<i64>,
    }

    impl Time for IncrementalTime {
    	fn get(&self) -> time::Timespec {
    		let c = self.counter.get();
    		let result = time::Timespec::new(c, 0);
    		self.counter.set(c + 1);
    		result
    	}
    }

    #[derive(Default)]
    pub struct ZeroTime {
    }

    impl Time for ZeroTime {
    	fn get(&self) -> time::Timespec {
    		time::Timespec::new(0, 0)
    	}
    }

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