On 02/19/04 Iain McCoy wrote:
> On Thu, 2004-02-19 at 02:16, Lawrence Oluyede wrote:
> > I've written a simple script to compute the uptime of the machine.
> > It works well on MS.NET on Win2k (i tried to compare the output with
> > some other similar utilities) but on Mono 0.29 on my Gentoo box it fails
> > (the procps uptime tells me another time instead of the one that i get
> > with my uptime). Maybe I'm wrong or maybe Mono is wrong... anyway I
> > can't install Mono 0.30 cause it doesn't compile on Gentoo and on
> > Windows it doesn't run :(
> >
> It seems that for Environment.TickCount mono returns basically the same
> thing as it returns for DateTime.Ticks.
>
> Environment.TickCount's icall looks like this:
> res = (gint32) gettimeofday (&tv, &tz);
>
> if (res != -1)
> res = (gint32) ((tv.tv_sec & 0xFFFFF) * 1000 +
> (tv.tv_usec / 1000));
> return res;
>
> while the DateTime_GetNow icall does this:
> if (gettimeofday (&tv, NULL) == 0) {
> res = (((gint64)tv.tv_sec + EPOCH_ADJUST)* 1000000 +
> tv.tv_usec)*10;
> return res;
> }
>
>
> These are rather more similar than makes sense, in any case.
>
> Anyway, Environment.TickCount is documented by MS (at
> http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfSystemEnvironmentClassTickCountTopic.asp)
> as "containing the amount of time in milliseconds that has passed since the last
> time the computer was started". I think mono's implementation should probably do
> something similar, although I'm not yet sure what the correct way to do that
> something similar would be.
We may change TickCount to return the time since the computer started
in the future, but it's sure not a priority. That said, anyone who uses
Environment.TickCount to get the uptime of a system is writing very
buggy code. Hint:
[EMAIL PROTECTED]:~$ w
19:44:02 up 139 days, 2:45, 1 user, load average: 1.29, 1.15, 1.11
lupus
--
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