1 files changed, 82 insertions, 0 deletions
diff --git a/softoff/timer.hpp b/softoff/timer.hpp
new file mode 100644
index 0000000..7c3bac2
--- /dev/null
+++ b/softoff/timer.hpp
@@ -0,0 +1,82 @@
+#pragma once
+
+#include <systemd/sd-event.h>
+namespace phosphor
+{
+namespace ipmi
+{
+
+/** @class Timer
+ *  @brief Manages starting watchdog timers and handling timeouts
+ */
+class Timer
+{
+    public:
+        /** @brief Only need the default Timer */
+        Timer() = delete;
+        Timer(const Timer&) = delete;
+        Timer& operator=(const Timer&) = delete;
+        Timer(Timer&&) = delete;
+        Timer& operator=(Timer&&) = delete;
+
+        /** @brief Constructs timer object
+         *
+         *  @param[in] events - sd_event pointer
+         */
+        Timer(sd_event* events)
+            : timeEvent(events)
+        {
+            // Initialize the timer
+            initialize();
+        }
+
+        ~Timer()
+        {
+            if (eventSource)
+            {
+                eventSource = sd_event_source_unref(eventSource);
+            }
+        }
+
+        inline auto isExpired()
+        {
+            return expired;
+        }
+
+    private:
+        /** @brief the sd_event structure */
+        sd_event* timeEvent = nullptr;
+
+        /** @brief Source of events */
+        sd_event_source* eventSource = nullptr;
+
+        /** @brief Returns if the associated timer is expired
+         *
+         *  This is set to true when the timeoutHandler is called into
+         */
+        bool expired = false;
+
+        /** @brief Initializes the timer object with infinite
+         *         expiration time and sets up the callback handler
+         *
+         *  @return None.
+         *
+         *  @error std::runtime exception thrown
+         */
+        void initialize();
+
+        /** @brief Callback function when timer goes off
+         *
+         *  On getting the signal, initiate the hard power off request
+         *
+         *  @param[in] eventSource - Source of the event
+         *  @param[in] usec        - time in micro seconds
+         *  @param[in] userData    - User data pointer
+         *
+         */
+        static int timeoutHandler(sd_event_source* eventSource,
+                                  uint64_t usec, void* userData);
+};
+
+} // namespace ipmi
+} // namespace phosphor