test13.cpp revision 12855:588919e0e4aa 
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20/*****************************************************************************
21
22  test13.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::wait(sc_time&, sc_event&)
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    int i = 0;
74    sc_time t(10, SC_NS);
75
76    while(1){
77    wait(t);
78    data = i;
79    cout <<"simulation time" << ":" << sc_time_stamp()<<"    ";
80    cout<<"writting "<< data <<" to channel" << endl;
81
82    if(i < 5){
83      write_event.notify(20, SC_NS);
84    }
85    else {
86      write_event.notify(5, SC_NS);
87	}
88    i++;
89    }
90  }
91
92  //read from channel
93  void read( ){
94    int j;
95    sc_time t1(10, SC_NS);
96
97    while(1){
98    wait(t1, write_event);
99    j = data;
100    cout <<"simulation time" << ":" << sc_time_stamp();
101    cout<<"    reading "<<j<<" from channel" << endl;
102    }
103  }
104
105  private:
106  int data;
107  sc_event write_event;
108
109};
110
111//source module
112SC_MODULE(mod_a)
113{
114  sc_port<write_if> out;
115
116  void write( )
117  {
118    out->write();
119  }
120
121  SC_CTOR( mod_a ){
122
123    SC_THREAD(write);
124  }
125};
126
127//sink module
128SC_MODULE(mod_b)
129{
130  sc_port<read_if> input;
131  int i;
132
133  void read( )
134  {
135   input->read();
136  }
137
138  SC_CTOR( mod_b ){
139
140    SC_THREAD(read);
141  }
142};
143
144
145int sc_main(int, char*[] )
146{
147  channel a("a");
148  mod_a modul_a("modul_a");
149  mod_b modul_b("modul_b");
150  modul_a.out(a);
151  modul_b.input(a);
152
153  sc_start(100, SC_NS);
154  return 0;
155}
156