test09.cpp revision 12855:588919e0e4aa 
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20/*****************************************************************************
21
22  test09.cpp --
23
24  Original Author: Ucar Aziz, Synopsys, Inc., 2002-02-15
25                   Martin Janssen, Synopsys, Inc., 2002-02-15
26
27 *****************************************************************************/
28
29/*****************************************************************************
30
31  MODIFICATION LOG - modifiers, enter your name, affiliation, date and
32  changes you are making here.
33
34      Name, Affiliation, Date:
35  Description of Modification:
36
37 *****************************************************************************/
38
39// test of sc_prim_channel::next_trigger(const sc_time&, sc_event_or_list&)
40
41#include <systemc.h>
42
43//write and read interfaces
44class write_if : virtual public
45sc_interface
46 {
47  public:
48   virtual void write() = 0;
49};
50
51class read_if : virtual public
52sc_interface
53{
54 public:
55  virtual void read( ) = 0;
56};
57
58// channel implements write_if and read_if interfaces
59class channel :
60  public sc_channel,
61  public write_if,
62  public read_if
63{
64
65  public :
66
67  //constructor
68  channel(sc_module_name name):sc_channel(name)  , data(0)
69  { }
70
71  //write to channel
72  void write(){
73    static int i = 0;
74    sc_time t1(10, SC_NS);
75    next_trigger(t1);
76    data = i;
77    cout <<"simulation time" << ":" << sc_time_stamp()<<"    ";
78    cout<<"writing "<< data <<" to channel" << endl;
79
80    if(i < 3){
81      write_event_1.notify(20, SC_NS);
82    }
83    else if(3 <= i & i < 6) {
84      write_event_1.notify(5, SC_NS);
85	}
86    else{
87      write_event_2.notify(6, SC_NS);
88    }
89
90    i++;
91  }
92
93  //read from channel
94  void read( ){
95    int j;
96    sc_time t2(10, SC_NS);
97    next_trigger(t2, write_event_1 | write_event_2);
98    j = data;
99    cout <<"simulation time" << ":" << sc_time_stamp();
100    cout<<"    reading "<<j<<" from channel" << endl;
101  }
102
103  private:
104  int data;
105  sc_event write_event_1, write_event_2;
106
107};
108
109//source module
110SC_MODULE(mod_a)
111{
112  sc_port<write_if> out;
113
114  void write( )
115  {
116    out->write();
117  }
118
119  SC_CTOR( mod_a ){
120
121    SC_METHOD(write);
122  }
123};
124
125//sink module
126SC_MODULE(mod_b)
127{
128  sc_port<read_if> input;
129  int i;
130
131  void read( )
132  {
133   input->read();
134  }
135
136  SC_CTOR( mod_b ){
137
138    SC_METHOD(read);
139  }
140};
141
142
143int sc_main(int, char*[] )
144{
145  channel a("a");
146  mod_a modul_a("modul_a");
147  mod_b modul_b("modul_b");
148  modul_a.out(a);
149  modul_b.input(a);
150
151  sc_start(120, SC_NS);
152  return 0 ;
153}
154