timer: Added GetLofreqTimerValue() etc for applications that don't need particularly high resolution

This value is intended to get updated as part of some higher level tick process. It is not automatic.

2 files changed, 31 insertions, 0 deletions

diff --git a/zencore/include/zencore/timer.h b/zencore/include/zencore/timer.h
index 693b6daaa..e4ddc3505 100644
--- a/zencore/include/zencore/timer.h
+++ b/zencore/include/zencore/timer.h
@@ -38,6 +38,21 @@ private:
 	uint64_t m_StartValue;
 };
 
+// Low frequency timers
+
+namespace detail {
+	extern ZENCORE_API uint64_t g_LofreqTimerValue;
+}  // namespace detail
+
+inline uint64_t
+GetLofreqTimerValue()
+{
+	return detail::g_LofreqTimerValue;
+}
+
+ZENCORE_API void	 UpdateLofreqTimerValue();
+ZENCORE_API uint64_t GetLofreqTimerFrequency();
+
 void timer_forcelink();	 // internal
 
 }  // namespace zen
diff --git a/zencore/timer.cpp b/zencore/timer.cpp
index 5d30d9b29..9180519bd 100644
--- a/zencore/timer.cpp
+++ b/zencore/timer.cpp
@@ -69,6 +69,22 @@ GetHifreqTimerFrequencySafe()
 }
 
 //////////////////////////////////////////////////////////////////////////
+
+uint64_t detail::g_LofreqTimerValue = GetHifreqTimerValue();
+
+void
+UpdateLofreqTimerValue()
+{
+	detail::g_LofreqTimerValue = GetHifreqTimerValue();
+}
+
+uint64_t
+GetLofreqTimerFrequency()
+{
+	return GetHifreqTimerFrequencySafe();
+}
+
+//////////////////////////////////////////////////////////////////////////
 //
 // Testing related code follows...
 //