1 files changed, 77 insertions, 0 deletions
diff --git a/examples/ClockerPlugIn/WinNtTimer.cpp b/examples/ClockerPlugIn/WinNtTimer.cpp
new file mode 100644
index 0000000..87546a2
--- /dev/null
+++ b/examples/ClockerPlugIn/WinNtTimer.cpp
@@ -0,0 +1,77 @@
+// //////////////////////////////////////////////////////////////////////////
+// Implementation file WinNtTimer.cpp for class WinNtTimer
+// (c)Copyright 2000, Baptiste Lepilleur.
+// Created: 2002/04/19
+// //////////////////////////////////////////////////////////////////////////
+
+#include "WinNtTimer.h"
+
+
+/*! Returns time spent in the thread.
+ * @param rquadTime Receive the time spent in the thread (user+kernel time) 
+ *                  in unit of 100 nano-seconds.
+ *                  In pratice, the effective resolution is 10ms !!!
+ *
+ * @return \c true if sucess, \c false otherwise.
+ */
+static bool 
+GetThreadSpentTime( LONGLONG &rquadTime )
+{
+  FILETIME timeCreation;
+  FILETIME timeExit;
+  FILETIME timeKernel;
+  FILETIME timeUser;
+  if ( !::GetThreadTimes( ::GetCurrentThread(),
+                          &timeCreation,
+                          &timeExit,
+                          &timeKernel,
+                          &timeUser) )
+  {
+    rquadTime = 0;
+    return false;
+  }
+
+  LARGE_INTEGER lintKernel;
+  lintKernel.LowPart = timeKernel.dwLowDateTime;
+  lintKernel.HighPart = timeKernel.dwHighDateTime;
+
+  LARGE_INTEGER lintUser;
+  lintUser.LowPart = timeUser.dwLowDateTime;
+  lintUser.HighPart = timeUser.dwHighDateTime;
+
+  rquadTime = lintKernel.QuadPart + lintUser.QuadPart;
+
+  return true;
+}
+
+
+
+void 
+WinNtTimer::start()
+{
+  m_isValid = GetThreadSpentTime( m_beginTime );
+
+}
+
+
+void 
+WinNtTimer::finish()
+{
+  LONGLONG quadTimeEnd;
+  LONGLONG quadProcessedElapse;
+  m_isValid = m_isValid  && GetThreadSpentTime( quadTimeEnd );
+  if ( m_isValid )
+  {
+    quadProcessedElapse = quadTimeEnd - m_beginTime;
+    m_elapsedTime = double(quadProcessedElapse) / 10000000;
+  }
+  else
+    m_elapsedTime = -1;
+}
+
+
+double 
+WinNtTimer::elapsedTime() const
+{
+  return m_elapsedTime;
+}