On Jan 20, 2010, at 1:34 PM, Brian Oleksa wrote:
> I forgot to add the format of the time stamp that I am trying to get.
>
> ms since the epoch (jan 1, 1970) as a 8 byte network byte order integer
>
> Is there built in functions that can be used..??
Do you mean that you have a protocol that has an 8-byte network-byte-order
integer whose value is a count of milliseconds since midnight, January 1, 1970?
The function to get the value would be tvb_get_ntoh64(), but that just gives
you a guint64 count of milliseconds.
If you want to add that to the protocol tree as an FT_ABSOLUTE_TIME, that
requires more work.
First - is that midnight, January 1, 1970, UTC, or midnight, January 1, 1970
*local* time? If it's local time, that's a bit more work; I'll assume it's UTC
here.
Values for FT_ABSOLUTE_TIME fields are nstime_t's; those are structures with a
"secs" and "nsecs" field. If you have a 64-bit milliseconds since the Epoch,
and you want to convert it to an nstime_t for use with an FT_ABSOLUTE_TIME
field, you'd do
guint64 msecs_since_the_epoch;
nstime_t t;
...
t.secs = msecs_since_the_epoch/1000;
t.nsecs = (msecs_since_the_epoch%1000)*1000000; /* milliseconds to
nanoseconds */
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