c1aecc05e6
This patch extensively modifies DSENT so that it can be accessed using Python. To access the Python interface, DSENT needs to compiled as a shared library. For this purpose a CMakeLists.txt file has been added. Some of the code that is not required is being removed.
125 lines
5.3 KiB
C++
125 lines
5.3 KiB
C++
/* Copyright (c) 2012 Massachusetts Institute of Technology
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef __DSENT_MODEL_ELECTRICAL_TIMING_NODE_H__
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#define __DSENT_MODEL_ELECTRICAL_TIMING_NODE_H__
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#include "util/CommonType.h"
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namespace DSENT
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{
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class ElectricalModel;
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class ElectricalTimingNode
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{
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public:
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// The starting visited number flag of all timing nodes
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static const int TIMING_NODE_INIT_VISITED_NUM;
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public:
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ElectricalTimingNode(const String& instance_name_, ElectricalModel* model_);
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virtual ~ElectricalTimingNode();
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public:
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// Calculate the delay this node contributes
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virtual double calculateDelay() const = 0;
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// Calculate the transition at this node
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virtual double calculateTransition() const = 0;
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// get maximum of upstream drive resistance
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virtual double getMaxUpstreamRes() const;
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// get total amount of downstream load capacitance
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virtual double getTotalDownstreamCap() const;
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// Return instance name
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const String& getInstanceName() const;
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// get upstream timing nodes
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vector<ElectricalTimingNode*>* getUpstreamNodes() const;
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// get downstream timing nodes
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vector<ElectricalTimingNode*>* getDownstreamNodes() const;
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// Connect a downstream timing node
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void addDownstreamNode(ElectricalTimingNode* node_);
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// Return the node's parent model
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ElectricalModel* getModel();
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const ElectricalModel* getModel() const;
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// Set/get false path marker
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void setFalsePath(bool false_path_);
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bool getFalsePath() const;
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virtual bool isDriver() const;
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virtual bool isNet() const;
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virtual bool isLoad() const;
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//-----------------------------------------------------------------
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// Functions for delay optimization
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//-----------------------------------------------------------------
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// Return true if the instance has minimum driving strength
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virtual bool hasMinDrivingStrength() const;
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// Return true if the instance has maximum driving strength
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virtual bool hasMaxDrivingStrength() const;
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// Increase driving strength index by 1
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virtual void increaseDrivingStrength();
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// Decrease driving strength index by 1
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virtual void decreaseDrivingStrength();
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//-----------------------------------------------------------------
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//-----------------------------------------------------------------
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// Node variables for critical path delay calculations
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//-----------------------------------------------------------------
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// Critical path marker
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void setCritPath(int crit_path_);
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int getCritPath() const;
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// Visited parity marker
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void setVisitedNum(int visited_parity_);
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int getVisitedNum() const;
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// Delay left in this path
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void setDelayLeft(double delay_left_);
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double getDelayLeft() const;
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//-----------------------------------------------------------------
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private:
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// Disable copy constructor
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ElectricalTimingNode(const ElectricalTimingNode& node_);
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private:
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// Name of this instance
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String m_instance_name_;
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// A pointer to the model that contains this node
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ElectricalModel* m_model_;
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// Upstream electrical nets
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vector<ElectricalTimingNode*>* m_upstream_nodes_;
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// Downstream electrical nets
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vector<ElectricalTimingNode*>* m_downstream_nodes_;
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// False path marker
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bool m_false_path_;
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// Critical path index (to next downstream node)
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int m_crit_path_;
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// Odd / even path visited (so that you don't have to clear it)
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int m_visited_num_;
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// The amount of delay left to the end of the timing path
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double m_delay_left_;
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};
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} // namespace DSENT
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#endif // __DSENT_MODEL_ELECTRICAL_TIMING_NODE_H__
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