functiontimer: created convenience class to help when profiling functions

app/common/CMakeLists.txt

@@ -29,6 +29,7 @@ set(OLIVE_SOURCES
   common/filefunctions.cpp
   common/flipmodifiers.h
   common/flipmodifiers.cpp
+  common/functiontimer.h
   common/lerp.h
   common/qtutils.h
   common/qtutils.cpp

app/common/functiontimer.h

@@ -0,0 +1,33 @@
+#ifndef FUNCTIONTIMER_H
+#define FUNCTIONTIMER_H
+
+#include <QDateTime>
+#include <QDebug>
+
+#define TIME_THIS_FUNCTION FunctionTimer __f(__FUNCTION__)
+
+class FunctionTimer {
+public:
+  FunctionTimer(const char* s)
+  {
+    name_ = s;
+    time_ = QDateTime::currentMSecsSinceEpoch();
+  }
+
+  ~FunctionTimer()
+  {
+    qint64 elapsed = (QDateTime::currentMSecsSinceEpoch() - time_);
+
+    if (elapsed > 1) {
+      qDebug() << name_ << "took" << elapsed;
+    }
+  }
+
+private:
+  const char* name_;
+
+  qint64 time_;
+
+};
+
+#endif // FUNCTIONTIMER_H