test03.cpp revision 12855:588919e0e4aa 
1/*****************************************************************************
2
3  Licensed to Accellera Systems Initiative Inc. (Accellera) under one or
4  more contributor license agreements.  See the NOTICE file distributed
5  with this work for additional information regarding copyright ownership.
6  Accellera licenses this file to you under the Apache License, Version 2.0
7  (the "License"); you may not use this file except in compliance with the
8  License.  You may obtain a copy of the License at
9
10    http://www.apache.org/licenses/LICENSE-2.0
11
12  Unless required by applicable law or agreed to in writing, software
13  distributed under the License is distributed on an "AS IS" BASIS,
14  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
15  implied.  See the License for the specific language governing
16  permissions and limitations under the License.
17
18 *****************************************************************************/
19
20/*****************************************************************************
21
22  test03.cpp --
23
24  Original Author: Martin Janssen, Synopsys, Inc., 2002-02-15
25
26 *****************************************************************************/
27
28/*****************************************************************************
29
30  MODIFICATION LOG - modifiers, enter your name, affiliation, date and
31  changes you are making here.
32
33      Name, Affiliation, Date:
34  Description of Modification:
35
36 *****************************************************************************/
37
38// test of sc_fifo ports - interface access shortcut methods
39
40#include "systemc.h"
41
42SC_MODULE( writer )
43{
44    // port(s)
45    sc_fifo_out<int> out;
46
47    // process(es)
48    void main_action()
49    {
50        int val = 0;
51        while( true ) {
52            wait( 10, SC_NS ); // wait for 10 ns
53            cout << "writer: blocking write\n";
54            for( int i = 0; i < 20; i ++ ) {
55                out.write( val ++ ); // blocking write
56            }
57            wait( 10, SC_NS );
58            cout << "writer: " << out.num_free() << " free spaces\n";
59            cout << "writer: non-blocking write\n";
60            for( int i = 0; i < 20; i ++ ) {
61                while( ! out.nb_write( val ++ ) ) { // non-blocking write
62                    cout << "writer: waiting\n";
63                    wait( 1, SC_NS );
64                }
65            }
66        }
67    }
68
69    SC_CTOR( writer )
70    {
71        SC_THREAD( main_action );
72    }
73};
74
75SC_MODULE( reader )
76{
77    // port(s)
78    sc_fifo_in<int> in;
79
80    // process(es)
81    void main_action()
82    {
83        int val;
84        while( true ) {
85            wait( 10, SC_NS ); // wait for 10 ns
86            cout << "reader: blocking read 1\n";
87            for( int i = 0; i < 15; i ++ ) {
88                in.read( val ); // blocking read
89                cout << val << endl;
90            }
91            wait( 10, SC_NS );
92            cout << "reader: " << in.num_available() << " available samples\n";
93            cout << "reader: blocking read 2\n";
94            for( int i = 0; i < 15; i ++ ) {
95                cout << in.read() << endl; // blocking read
96            }
97            wait( 10, SC_NS );
98            cout << "reader: " << in.num_available() << " available samples\n";
99            cout << "reader: non-blocking read\n";
100            for( int i = 0; i < 15; i ++ ) {
101                while( ! in.nb_read( val ) ) { // non-blocking read
102                    cout << "reader: waiting\n";
103                    wait( 1, SC_NS );
104                }
105                cout << val << endl;
106            }
107        }
108    }
109
110    SC_CTOR( reader )
111    {
112        SC_THREAD( main_action );
113    }
114};
115
116int sc_main( int, char*[] )
117{
118    // sc_clock c;
119
120    // declare channel(s)
121    sc_fifo<int> fifo( 10 );
122
123    // instantiate block(s) and connect to channel(s)
124    writer w( "writer" );
125    reader r( "reader" );
126
127    w.out( fifo );
128    r.in( fifo );
129
130    // run the simulation
131    sc_start( 100, SC_NS );
132
133    return 0;
134}
135