ext: add the source code for DSENT

This patch adds a tool called DSENT to the ext/ directory.  DSENT
is a tool that models power and area for on-chip networks.  The next
patch adds a script for using the tool.

1 files changed, 48 insertions, 0 deletions

diff --git a/ext/dsent/model/optical_graph/OpticalFilter.h b/ext/dsent/model/optical_graph/OpticalFilter.h
new file mode 100644
index 000000000..e908618e4
--- /dev/null
+++ b/ext/dsent/model/optical_graph/OpticalFilter.h
@@ -0,0 +1,48 @@
+#ifndef __DSENT_MODEL_OPTICALGRAPH_OPTICALFILTER_H__
+#define __DSENT_MODEL_OPTICALGRAPH_OPTICALFILTER_H__
+
+#include "model/optical_graph/OpticalNode.h"
+#include "util/CommonType.h"
+
+namespace DSENT
+{
+    class OpticalFilter : public OpticalNode
+    {
+        public:
+            OpticalFilter(const String& instance_name_, OpticalModel* model_, const WavelengthGroup& wavelengths_, bool drop_all_, const WavelengthGroup& drop_wavelengths_);
+            ~OpticalFilter();
+
+        public:
+            // Get the drop all flag
+            bool getDropAll() const;
+            // Get drop wavelengths
+            WavelengthGroup getDropWavelengths() const;
+            // Set and get the drop loss
+            void setDropLoss(double drop_loss_);
+            double getDropLoss() const;
+            // Set and get drop port
+            void setDropPort(OpticalNode* drop_port_);
+            OpticalNode* getDropPort();
+            // Checks to see if a set of wavelengths will be dropped
+            bool isDropped(const WavelengthGroup& wavelengths_) const;
+            
+        private:
+            // Disable copy constructor
+            OpticalFilter(const OpticalFilter& node_);
+
+        private:
+            // Whether to drop all the optical signal for the drop wavelengths
+            // i.e. so that the drop wavelengths are not traced anymore
+            const bool m_drop_all_;
+            // The loss incurred from in to drop port
+            double m_drop_loss_;
+            // The wavelengths that are dropped
+            const WavelengthGroup m_drop_wavelengths_;
+            // The node at the drop port
+            OpticalNode* m_drop_port_;
+    };
+    
+} // namespace DSENT
+
+#endif // __DSENT_MODEL_OPTICALGRAPH_OPTICALFILTER_H__
+