tree 784fc6e0fa0a9c79ac4d14d43a2c71b5d1ad9ebc
parent d7a3f13ef17e34a39bae3ff482c15181e40cc0d7
author Vishwanatha Subbanna <vishwa@linux.vnet.ibm.com> 1496138663 +0530
committer Vishwanatha Subbanna <vishwa@linux.vnet.ibm.com> 1496401671 +0530

Invoke optional callback function on timer expiration

When the timer expires, it calls into it's own timeout
handler which matches with sd_event callback handler.

However, it is beneficial if the users of timer register
their own callback routine so that they can execute some
operations on timeout.

Change-Id: Ia88cb4e3c17f6dd8d4528fa193ec7927f083a92b
Signed-off-by: Vishwanatha Subbanna <vishwa@linux.vnet.ibm.com>