blob: 01c6497da9469289c23b17daeced65bbf5cdcb8f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
|
#ifndef __DSENT_MODEL_ELECTRICAL_TIMING_NODE_H__
#define __DSENT_MODEL_ELECTRICAL_TIMING_NODE_H__
#include "util/CommonType.h"
namespace DSENT
{
class ElectricalModel;
class ElectricalTimingNode
{
public:
// The starting visited number flag of all timing nodes
static const int TIMING_NODE_INIT_VISITED_NUM;
public:
ElectricalTimingNode(const String& instance_name_, ElectricalModel* model_);
virtual ~ElectricalTimingNode();
public:
// Calculate the delay this node contributes
virtual double calculateDelay() const = 0;
// Calculate the transition at this node
virtual double calculateTransition() const = 0;
// get maximum of upstream drive resistance
virtual double getMaxUpstreamRes() const;
// get total amount of downstream load capacitance
virtual double getTotalDownstreamCap() const;
// Return instance name
const String& getInstanceName() const;
// get upstream timing nodes
vector<ElectricalTimingNode*>* getUpstreamNodes() const;
// get downstream timing nodes
vector<ElectricalTimingNode*>* getDownstreamNodes() const;
// Connect a downstream timing node
void addDownstreamNode(ElectricalTimingNode* node_);
// Return the node's parent model
ElectricalModel* getModel();
const ElectricalModel* getModel() const;
// Set/get false path marker
void setFalsePath(bool false_path_);
bool getFalsePath() const;
virtual bool isDriver() const;
virtual bool isNet() const;
virtual bool isLoad() const;
//-----------------------------------------------------------------
// Functions for delay optimization
//-----------------------------------------------------------------
// Return true if the instance has minimum driving strength
virtual bool hasMinDrivingStrength() const;
// Return true if the instance has maximum driving strength
virtual bool hasMaxDrivingStrength() const;
// Increase driving strength index by 1
virtual void increaseDrivingStrength();
// Decrease driving strength index by 1
virtual void decreaseDrivingStrength();
//-----------------------------------------------------------------
//-----------------------------------------------------------------
// Node variables for critical path delay calculations
//-----------------------------------------------------------------
// Critical path marker
void setCritPath(int crit_path_);
int getCritPath() const;
// Visited parity marker
void setVisitedNum(int visited_parity_);
int getVisitedNum() const;
// Delay left in this path
void setDelayLeft(double delay_left_);
double getDelayLeft() const;
//-----------------------------------------------------------------
private:
// Disable copy constructor
ElectricalTimingNode(const ElectricalTimingNode& node_);
private:
// Name of this instance
String m_instance_name_;
// A pointer to the model that contains this node
ElectricalModel* m_model_;
// Upstream electrical nets
vector<ElectricalTimingNode*>* m_upstream_nodes_;
// Downstream electrical nets
vector<ElectricalTimingNode*>* m_downstream_nodes_;
// False path marker
bool m_false_path_;
// Critical path index (to next downstream node)
int m_crit_path_;
// Odd / even path visited (so that you don't have to clear it)
int m_visited_num_;
// The amount of delay left to the end of the timing path
double m_delay_left_;
};
} // namespace DSENT
#endif // __DSENT_MODEL_ELECTRICAL_TIMING_NODE_H__
|
