function to get time in seconds and milliseconds

[John Smith]

Hi,

Is there a function in Solaris 8 that would return time in seconds (since
1970) and also contain millisecond part of the time. I know there are
functions to obtain time in seconds but I don't think they contain
millisecond part.

Would it be possible for you to also supply sample code.

Thanks!

[John Smith]

Hi,

Is there a function in Solaris 8 that would return time in seconds (since
1970) and also contain millisecond part of the time. I know there are
functions to obtain time in seconds but I don't think they contain
millisecond part.

Would it be possible for you to also supply sample code.

Thanks!

[Rich Teer]

On Sat, 5 Jul 2003, John Smith wrote:

> Is there a function in Solaris 8 that would return time in seconds (since
> 1970) and also contain millisecond part of the time. I know there are
> functions to obtain time in seconds but I don't think they contain
> millisecond part.

You can use gettimeofday(), but I don't think there's a
guarantee of sub-second resolution. Why do you need this
resolution? Odds are there are better ways than time since
the epoch...

--
Rich Teer, SCNA, SCSA

President,
Rite Online Inc.

Voice: +1 (250) 979-1638
URL: [url]http://www.rite-online.net[/url]

[Rich Teer]

On Sat, 5 Jul 2003, John Smith wrote:

> Is there a function in Solaris 8 that would return time in seconds (since
> 1970) and also contain millisecond part of the time. I know there are
> functions to obtain time in seconds but I don't think they contain
> millisecond part.

You can use gettimeofday(), but I don't think there's a
guarantee of sub-second resolution. Why do you need this
resolution? Odds are there are better ways than time since
the epoch...

--
Rich Teer, SCNA, SCSA

President,
Rite Online Inc.

Voice: +1 (250) 979-1638
URL: [url]http://www.rite-online.net[/url]

[John Smith]

"Rich Teer" <rich.teer@rite-group.com> wrote in message
news:Pine.GSO.4.44.0307051645400.448-100000@zaphod.rite-group.com...

> On Sat, 5 Jul 2003, John Smith wrote:
>

> > Is there a function in Solaris 8 that would return time in seconds

(since

> > 1970) and also contain millisecond part of the time. I know there are
> > functions to obtain time in seconds but I don't think they contain
> > millisecond part.

>
> You can use gettimeofday(), but I don't think there's a
> guarantee of sub-second resolution. Why do you need this
> resolution? Odds are there are better ways than time since
> the epoch...

Hi,

The reason why I needed this type of resolution is because I am writing a
simulator and the proprietary protocol that I am working with requires me to
put time in seconds part + millisecond part in each message header. Does
Solaris even keep time in millisecond resolution?

[John Smith]

"Rich Teer" <rich.teer@rite-group.com> wrote in message
news:Pine.GSO.4.44.0307051645400.448-100000@zaphod.rite-group.com...

> On Sat, 5 Jul 2003, John Smith wrote:
>

> > Is there a function in Solaris 8 that would return time in seconds

(since

> > 1970) and also contain millisecond part of the time. I know there are
> > functions to obtain time in seconds but I don't think they contain
> > millisecond part.

>
> You can use gettimeofday(), but I don't think there's a
> guarantee of sub-second resolution. Why do you need this
> resolution? Odds are there are better ways than time since
> the epoch...

Hi,

The reason why I needed this type of resolution is because I am writing a
simulator and the proprietary protocol that I am working with requires me to
put time in seconds part + millisecond part in each message header. Does
Solaris even keep time in millisecond resolution?

[David Schwartz]

"John Smith" <John_Smith273@cox.net> wrote in message
news:wbKNa.120012$MJ5.8291@fed1read03...

> The reason why I needed this type of resolution is because I am writing a
> simulator and the proprietary protocol that I am working with requires me

to

> put time in seconds part + millisecond part in each message header. Does
> Solaris even keep time in millisecond resolution?

The 'gettimeofday' function will give you the platform's best guess of
the current time in seconds and microseconds. What resolution the system
actually has will vary based on the hardware.

I tried this program on a few sparch Solaris machines:

#include <time.h>
#include <sys/time.h>

int main(void)
{
struct timeval t1, t2;
gettimeofday(&t1, NULL);
do gettimeofday(&t2, NULL); while (t1.tv_usec==t2.tv_usec);
printf("Resolution guess, %d usec\n", t2.tv_usec-t1.tv_usec);
}

And I usually get '1 usec', suggesting that the machine has at least
microsecond resolution.

Of course, the accuracy with respect to UTC will depend upon how well
the clock is synchronized to UTC. But it should be suitable for figuring out
the time between events that all take place on the same machine.

DS

[David Schwartz]

"John Smith" <John_Smith273@cox.net> wrote in message
news:wbKNa.120012$MJ5.8291@fed1read03...

> The reason why I needed this type of resolution is because I am writing a
> simulator and the proprietary protocol that I am working with requires me

to

> put time in seconds part + millisecond part in each message header. Does
> Solaris even keep time in millisecond resolution?

The 'gettimeofday' function will give you the platform's best guess of
the current time in seconds and microseconds. What resolution the system
actually has will vary based on the hardware.

I tried this program on a few sparch Solaris machines:

#include <time.h>
#include <sys/time.h>

int main(void)
{
struct timeval t1, t2;
gettimeofday(&t1, NULL);
do gettimeofday(&t2, NULL); while (t1.tv_usec==t2.tv_usec);
printf("Resolution guess, %d usec\n", t2.tv_usec-t1.tv_usec);
}

And I usually get '1 usec', suggesting that the machine has at least
microsecond resolution.

Of course, the accuracy with respect to UTC will depend upon how well
the clock is synchronized to UTC. But it should be suitable for figuring out
the time between events that all take place on the same machine.

DS

[Michael B Allen]

On Sat, 05 Jul 2003 19:43:03 -0400, John Smith wrote:

> Hi,
>
> Is there a function in Solaris 8 that would return time in seconds
> (since 1970) and also contain millisecond part of the time.

Try gettimeofday.

Mike

[Michael B Allen]

On Sat, 05 Jul 2003 19:43:03 -0400, John Smith wrote:

> Hi,
>
> Is there a function in Solaris 8 that would return time in seconds
> (since 1970) and also contain millisecond part of the time.

Try gettimeofday.

Mike

[Joerg Schilling]

In article <wbKNa.120012$MJ5.8291@fed1read03>,
John Smith <John_Smith273@cox.net> wrote:

>>
>> You can use gettimeofday(), but I don't think there's a
>> guarantee of sub-second resolution. Why do you need this
>> resolution? Odds are there are better ways than time since
>> the epoch...

>
>The reason why I needed this type of resolution is because I am writing a
>simulator and the proprietary protocol that I am working with requires me to
>put time in seconds part + millisecond part in each message header. Does
>Solaris even keep time in millisecond resolution?

No, it keeps time in sub-microsecond resolution.

--
EMail:joerg@schily.isdn.cs.tu-berlin.de (home) Jörg Schilling D-13353 Berlin
[email]js@cs.tu-berlin.de[/email] (uni) If you don't have iso-8859-1
[email]schilling@fokus.fraunhofer.de[/email] (work) chars I am J"org Schilling
URL: [url]http://www.fokus.fraunhofer.de/usr/schilling[/url] [url]ftp://ftp.berlios.de/pub/schily[/url]

[Joerg Schilling]

In article <wbKNa.120012$MJ5.8291@fed1read03>,
John Smith <John_Smith273@cox.net> wrote:

>>
>> You can use gettimeofday(), but I don't think there's a
>> guarantee of sub-second resolution. Why do you need this
>> resolution? Odds are there are better ways than time since
>> the epoch...

>
>The reason why I needed this type of resolution is because I am writing a
>simulator and the proprietary protocol that I am working with requires me to
>put time in seconds part + millisecond part in each message header. Does
>Solaris even keep time in millisecond resolution?

No, it keeps time in sub-microsecond resolution.

--
EMail:joerg@schily.isdn.cs.tu-berlin.de (home) Jörg Schilling D-13353 Berlin
[email]js@cs.tu-berlin.de[/email] (uni) If you don't have iso-8859-1
[email]schilling@fokus.fraunhofer.de[/email] (work) chars I am J"org Schilling
URL: [url]http://www.fokus.fraunhofer.de/usr/schilling[/url] [url]ftp://ftp.berlios.de/pub/schily[/url]

[Alex Vinokur]

"John Smith" <John_Smith273@cox.net> wrote in message news:2oJNa.119999$MJ5.1555@fed1read03...

> Hi,
>
> Is there a function in Solaris 8 that would return time in seconds (since
> 1970) and also contain millisecond part of the time. I know there are
> functions to obtain time in seconds but I don't think they contain
> millisecond part.
>
> Would it be possible for you to also supply sample code.
>
> Thanks!
>
>

gethrtime()
[url]http://groups.google.com/groups?selm=36822F3A.DBFF0811%40tibam.elex.co.il[/url]
[url]http://groups.google.com/groups?selm=368734F0.70B29CE2%40tibam.elex.co.il[/url]

getrusage()
See C/C++ Program Perfometer :
[url]http://sourceforge.net/projects/cpp-perfometer[/url]
[url]http://alexvn.freeservers.com/s1/perfometer.html[/url]


==========================================
Alex Vinokur
mailto:alexvn@connect.to
[url]http://www.simtel.net/pub/oth/19088.html[/url]
[url]http://sourceforge.net/users/alexvn[/url]
==========================================

[Alex Vinokur]

"John Smith" <John_Smith273@cox.net> wrote in message news:2oJNa.119999$MJ5.1555@fed1read03...

> Hi,
>
> Is there a function in Solaris 8 that would return time in seconds (since
> 1970) and also contain millisecond part of the time. I know there are
> functions to obtain time in seconds but I don't think they contain
> millisecond part.
>
> Would it be possible for you to also supply sample code.
>
> Thanks!
>
>

gethrtime()
[url]http://groups.google.com/groups?selm=36822F3A.DBFF0811%40tibam.elex.co.il[/url]
[url]http://groups.google.com/groups?selm=368734F0.70B29CE2%40tibam.elex.co.il[/url]

getrusage()
See C/C++ Program Perfometer :
[url]http://sourceforge.net/projects/cpp-perfometer[/url]
[url]http://alexvn.freeservers.com/s1/perfometer.html[/url]


==========================================
Alex Vinokur
mailto:alexvn@connect.to
[url]http://www.simtel.net/pub/oth/19088.html[/url]
[url]http://sourceforge.net/users/alexvn[/url]
==========================================

[Edward Lloyd Hillman]

In article <pan.2003.07.06.01.06.08.423187.4856@ioplex.com> ,
Michael B Allen <mba2000@ioplex.com> writes:

> On Sat, 05 Jul 2003 19:43:03 -0400, John Smith wrote:
>

>> Hi,
>>
>> Is there a function in Solaris 8 that would return time in seconds
>> (since 1970) and also contain millisecond part of the time.

>
> Try gettimeofday.
>
> Mike

I've used "clock_gettime"; that returns time in seconds and nanoseconds.

--
Edward Lloyd Hillman
Signature?!? I don't need no stinking signature!!
<mailto:ehillman@iamdigex.net>

[Edward Lloyd Hillman]

In article <pan.2003.07.06.01.06.08.423187.4856@ioplex.com> ,
Michael B Allen <mba2000@ioplex.com> writes:

> On Sat, 05 Jul 2003 19:43:03 -0400, John Smith wrote:
>

>> Hi,
>>
>> Is there a function in Solaris 8 that would return time in seconds
>> (since 1970) and also contain millisecond part of the time.

>
> Try gettimeofday.
>
> Mike

I've used "clock_gettime"; that returns time in seconds and nanoseconds.

--
Edward Lloyd Hillman
Signature?!? I don't need no stinking signature!!
<mailto:ehillman@iamdigex.net>

[John Smith]

"John Smith" <John_Smith273@cox.net> wrote in message
news:2oJNa.119999$MJ5.1555@fed1read03...

> Hi,
>
> Is there a function in Solaris 8 that would return time in seconds (since
> 1970) and also contain millisecond part of the time. I know there are
> functions to obtain time in seconds but I don't think they contain
> millisecond part.
>
> Would it be possible for you to also supply sample code.
>
> Thanks!

Thank you all for your help! I really appreciated the feedback you have
provided.

[John Smith]

"John Smith" <John_Smith273@cox.net> wrote in message
news:2oJNa.119999$MJ5.1555@fed1read03...

> Hi,
>
> Is there a function in Solaris 8 that would return time in seconds (since
> 1970) and also contain millisecond part of the time. I know there are
> functions to obtain time in seconds but I don't think they contain
> millisecond part.
>
> Would it be possible for you to also supply sample code.
>
> Thanks!

Thank you all for your help! I really appreciated the feedback you have
provided.