[phobos] Proposal of StopWatch module

[Lars Tandle Kyllingstad]

Near the bottom of SHOOs e-mail, he does explicitly say he didn't look
at Tango.

I see no reason not to trust that, similar APIs notwithstanding.  There
really aren't that many ways to make a sensible stopwatch API -- you
need a start(), a stop(), and some way to extract the time inbetween in
various units.  std.perf.PerformanceCounter looks like that too.

-Lars



On Tue, 2010-08-17 at 05:05 -0700, Steve Schveighoffer wrote:
> in anticipation of what might happen...
> 
> Tango does have a StopWatch object, it looks like this (API only):
> 
> void start()
> Start the timer
> double stop()
> Stop the timer and return elapsed duration since start()
> ulong microsec()
> Return elapsed time since the last start() as microseconds
> static this()
> Setup timing information for later use
> ulong timer() [private, static]
> Return the current time as an IntervalI hate to do this, but I don't want to 
> incur any more issues from the Tango team.  Have you looked at this tango module 
> before writing your StopWatch object (note the StopWatch module is separate from 
> the other tango modules)?
> 
> -Steve
> 
> 
> 
> ----- Original Message ----
> > From: SHOO <zan77137 at nifty.com>
> > To: phobos at puremagic.com
> > Sent: Tue, August 17, 2010 6:43:41 AM
> > Subject: [phobos] Proposal of StopWatch module
> > 
> > I made the module of the stopwatch, so I suggest it again here.
> > 
> > I  suggested a time handling module that I called std.time before.
> > Unfortunately  itself was not able to contribute to Phobos for the issue
> > of license. But, an  important function was included in it. It is what is
> > the StopWatch suggested  this time.
> > 
> > I have some knowledge about machine control engineering. In  the field of
> > the machine control engineering, the high accuracy time  measurement
> > often plays an important role.
> > For example, the case wants to  perform the measurement of the voltage
> > with time by millisecond order for  feedback control. When it looks like
> > it, resolution power is not enough by  time acquisition such as C's time
> > function in many cases.
> > 
> > Or the high  accuracy time measurement is important in the game
> > programming, too. Or in  benchmark testing, too.
> > 
> > There is std.perf in Phobos as a module with this  role now.
> > However, the module is unlisted, and a license doesn't seem to be  a
> > Boost license, too.
> > I did not refer Tango at all about this class and  examined and made it
> > in my own hand completely.
> > 
> > Here is the module to  suggest this time:
> >     http://ideone.com/TVw1P
> > 
> > # This module  is tested by Windows (real) and Ubuntu (virtual PC).
> > 
> > Please look at it  once by all means, and review it.
> > I think that I will commit it at  2010-08-22T15:00Z as far as there is
> > not serious dissenting  opinion.
> > _______________________________________________
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> > 
> 
> 
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