On Fri, May 3, 2013 at 7:00 PM, Mircea Markus <[email protected]> wrote:
> > On 3 May 2013, at 16:54, Pedro Ruivo wrote: > > > On 05/03/2013 04:49 PM, Manik Surtani wrote: > >> > >> On 2 May 2013, at 19:01, Pedro Ruivo <[email protected]> wrote: > >> > >>> > >>> preciseTime() {return (cached = System.nanoTime());} > >>> impreciseTime() {return cached;} > >> > >> How would you invalidate the cached time? > > > > My idea is to have a schedule thread updating the cached time. the > > preciseTime() is just an optimization to keep the cached value more > > up-to-date since we are calculating the nanoTime() (and assuming that > > nanoTime() is more expensive than write in the volatile variable). > > Sounds like a good idea but please don't implement that for now. That's a > performance optimisation and would require benchmarking to prove it's worth > doing - more of a nice to have ATM. > > Actually, the performance optimization would be not to write the cached time in preciseTime would be the performance optimization.
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