From 8c5a2298627c6cbe37782f3b33e8d6c43ed9c4d8 Mon Sep 17 00:00:00 2001
From: Vishwanatha Subbanna <vishwa@linux.vnet.ibm.com>
Date: Tue, 30 May 2017 15:34:23 +0530
Subject: 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>
---
 watchdog.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

(limited to 'watchdog.cpp')

diff --git a/watchdog.cpp b/watchdog.cpp
index c9e9919..e5e8aff 100644
--- a/watchdog.cpp
+++ b/watchdog.cpp
@@ -1,7 +1,6 @@
 #include <chrono>
 #include <phosphor-logging/log.hpp>
 #include "watchdog.hpp"
-
 namespace phosphor
 {
 namespace watchdog
@@ -92,5 +91,13 @@ uint64_t Watchdog::timeRemaining(uint64_t value)
     return 0;
 }
 
+// Optional callback function on timer expiration
+void Watchdog::timeOutHandler()
+{
+    log<level::INFO>("Optional callback called");
+    // TODO: Need to call the user passed systemd
+    // target on this condition
+}
+
 } // namespace watchdog
 } // namepsace phosphor
-- 
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