ext/dsent/model/timing_graph/ElectricalDriverMultiplier.h

   1 /* Copyright (c) 2012 Massachusetts Institute of Technology
   2  *
   3  * Permission is hereby granted, free of charge, to any person obtaining a copy
   4  * of this software and associated documentation files (the "Software"), to deal
   5  * in the Software without restriction, including without limitation the rights
   6  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   7  * copies of the Software, and to permit persons to whom the Software is
   8  * furnished to do so, subject to the following conditions:
   9  *
  10  * The above copyright notice and this permission notice shall be included in
  11  * all copies or substantial portions of the Software.
  12  *
  13  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  14  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  15  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  16  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  17  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  18  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  19  * THE SOFTWARE.
  20  */
  21
  22 #ifndef __DSENT_MODEL_ELECTRICAL_DRIVER_MULTIPLIER_H__
  23 #define __DSENT_MODEL_ELECTRICAL_DRIVER_MULTIPLIER_H__
  24
  25 #include "util/CommonType.h"
  26 #include "model/timing_graph/ElectricalTimingNode.h"
  27
  28 namespace DSENT
  29 {
  30     // Simple class that can be used to mimic the presence of multiple drivers
  31     // output drivers (each driving one of the downstream loads) when only one
  32     // such driver has been instantiated (such as models that take advantage of
  33     // bit duplicattion). When the downsream loads differ in load cap, it
  34     // just returns the largest of the caps
  35     class ElectricalDriverMultiplier : public ElectricalTimingNode
  36     {
  37         public:
  38             ElectricalDriverMultiplier(const String& instance_name_, ElectricalModel* model_);
  39             virtual ~ElectricalDriverMultiplier();
  40
  41         public:
  42             // Calculate drive resistance of this node;
  43             double calculateDriveRes(double input_drive_res_) const;
  44             // Calculate wiring delay (or net delay)
  45             double calculateDelay() const;
  46             // Calculate transition
  47             double calculateTransition() const;
  48             // get total amount of downstream load capacitance
  49             double getTotalDownstreamCap() const;
  50
  51         private:
  52             // Disable copy constructor
  53             ElectricalDriverMultiplier(const ElectricalDriverMultiplier& net_);
  54
  55         private:
  56             // Name of this instance
  57             String m_instance_name_;
  58     };
  59
  60 } // namespace DSENT
  61
  62 #endif // __DSENT_MODEL_ELECTRICAL_DRIVER_MULTIPLIER_H__
  63