RE: timestamp question

["Jeff Hill" <johill@lanl.gov>]

Kevin,

You mention that "when I use the camonitor (from base) I get timestamps
20yrs in the future". What do you see when you type "date" on the
console of the IOC that camonitor is connecting to?

Jeff

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Subject:	timestamp question
From:	"Kevin Tsubota" <ktsubota@keck.hawaii.edu>
To:	"EPICS-tech-talk \(E-mail\)" <tech-talk@aps.anl.gov>
Date:	Mon, 26 Aug 2002 20:11:58 -0600

Title: timestamp question

Hi All,

I have a channel access application that we inherited from someone else a
long time ago that is
returning a timestamp of seconds since 1/1/1970.  This application also has
its own camonitor
utility that returns the current date.  However when I use the base
camonitor I get timestamps 20yrs
in the future.

Upon further investigation I found comments that EPICS uses 1/1/1990 as its
epoch.  So I'm guessing
here that EPICS camonitor is taking the timestamp from my application and
adding 20yrs.  Is this
correct or am I _way_ out in left field?

Thanks in advance.
Kevin

Code snippet from EPICS R3.13.0Beta12/base/include/tsDefs.h

/*--------------------------------------------------------------------------
-
-
* TS_STAMP
*
*    This is the form taken by time stamps in GTACS, and is the form used
*    by the various tools used for dealing with time stamps.
*
*    The time stamp represents the number of nanoseconds past 0000 Jan 1,
199
0,
*    GMT (or UTC, if you prefer).
*
*---------------------------------------------------------------------------
-
*/
typedef struct {
    epicsUInt32    secPastEpoch;   /* seconds since 0000 Jan 1, 1990 */
    epicsUInt32    nsec;           /* nanoseconds within second */
} TS_STAMP;

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