Add timer skeleton
This patchset creates the timer infrastructure that is then
used by soft power off object on user requests.
Change-Id: I6f7a5c161999fda89471f453c24725efddac65b9
Signed-off-by: Vishwanatha Subbanna <vishwa@linux.vnet.ibm.com>
diff --git a/softoff/timer.cpp b/softoff/timer.cpp
new file mode 100644
index 0000000..9e722f1
--- /dev/null
+++ b/softoff/timer.cpp
@@ -0,0 +1,58 @@
+#include <phosphor-logging/log.hpp>
+#include "timer.hpp"
+namespace phosphor
+{
+namespace ipmi
+{
+
+using namespace phosphor::logging;
+
+// Initializes the timer object
+void Timer::initialize()
+{
+ // This can not be called more than once.
+ if (eventSource)
+ {
+ throw std::runtime_error("Timer already initialized");
+ }
+
+ // Add infinite expiration time
+ auto r = sd_event_add_time(timeEvent, &eventSource,
+ CLOCK_MONOTONIC, // Time base
+ UINT64_MAX, // Expire time - way long enough time
+ 0, // Use default event accuracy
+ timeoutHandler, // Callback handler on timeout
+ this); // User data
+ if (r < 0)
+ {
+ log<level::ERR>("Failure to set initial expiration time value",
+ entry("ERROR=%s", strerror(-r)));
+
+ throw std::runtime_error("Timer initialization failed");
+ }
+
+ // Disable the timer for now
+ r = sd_event_source_set_enabled(eventSource, SD_EVENT_OFF);
+ if (r < 0)
+ {
+ log<level::ERR>("Failure to disable timer",
+ entry("ERROR=%s", strerror(-r)));
+
+ throw std::runtime_error("Setting initial timer value failed");
+ }
+ return;
+}
+
+/** @brief callback handler on timeout */
+int Timer::timeoutHandler(sd_event_source* eventSource,
+ uint64_t usec, void* userData)
+{
+ auto timer = static_cast<Timer*>(userData);
+ timer->expired = true;
+
+ log<level::INFO>("Timer expired");
+ return 0;
+}
+
+} // namespace ipmi
+} // namespace phosphor