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From: Patrick Mahan <mahan@mahan.org>
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Date: Thu, 5 Sep 2013 11:01:32 -0700
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Subject: [dpdk-dev] Recommended method of getting timestamps?
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I have a need to keep a timestamp on a piece of global data.  When then time=
stamp grows too old I want to refresh that data.  Is it safe to use, gettime=
ofday()?

I thought about using an alarm, but I need to set an alarm from inside the a=
larm callback which doesn't look like it will work due to the spinlock on th=
e alarm list.

And since this is inside the driver I am working on, setting up a timer is n=
ot simple.

So, I figure to timestamp the data, wait until I need to access it, check th=
e timestamp and refresh if it is too old.

Thoughts?  Suggestions?

Thanks,

Patrick

Coming to you from deep inside Fortress Mahan=