test02.cpp revision 12855:588919e0e4aa 
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3  Licensed to Accellera Systems Initiative Inc. (Accellera) under one or
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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
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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  test02.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 the sc_semaphore_if interface -- mutex case
39
40#include "systemc.h"
41
42SC_MODULE( mod_a )
43{
44    sc_port<sc_semaphore_if> semaphore;
45
46    void write( const char* msg )
47    {
48        cout << sc_time_stamp() << " " << msg << endl;
49    }
50
51    void proc_a()
52    {
53        while( true ) {
54            wait( 1, SC_NS );
55            write( "proc_a - lock requested" );
56            semaphore->wait();
57            write( "proc_a - lock obtained" );
58            wait( 2, SC_NS );
59            if( semaphore->post() == 0 ) {
60                write( "proc_a - unlock successful" );
61            } else {
62                write( "proc_a - unlock failed" );
63            }
64            wait( 3, SC_NS );
65            if( semaphore->trywait() == 0 ) {
66                write( "proc_a - trylock successful" );
67            } else {
68                write( "proc_a - trylock failed" );
69            }
70            if( semaphore->post() == 0 ) {
71                write( "proc_a - unlock successful" );
72            } else {
73                write( "proc_a - unlock failed" );
74            }
75        }
76    }
77
78    SC_CTOR( mod_a )
79    {
80        SC_THREAD( proc_a );
81    }
82};
83
84SC_MODULE( mod_b )
85{
86    sc_port<sc_semaphore_if> semaphore;
87
88    void write( const char* msg )
89    {
90        cout << sc_time_stamp() << " " << msg << endl;
91    }
92
93    void proc_b()
94    {
95        while( true ) {
96            wait( 2, SC_NS );
97            write( "proc_b - lock requested" );
98            semaphore->wait();
99            write( "proc_b - lock obtained" );
100            wait( 4, SC_NS );
101            if( semaphore->post() == 0 ) {
102                write( "proc_b - unlock successful" );
103            } else {
104                write( "proc_b - unlock failed" );
105            }
106            wait( 3, SC_NS );
107            if( semaphore->trywait() == 0 ) {
108                write( "proc_b - trylock successful" );
109            } else {
110                write( "proc_b - trylock failed" );
111            }
112            if( semaphore->post() == 0 ) {
113                write( "proc_b - unlock successful" );
114            } else {
115                write( "proc_b - unlock failed" );
116            }
117        }
118    }
119
120    SC_CTOR( mod_b )
121    {
122        SC_THREAD( proc_b );
123    }
124};
125
126int
127sc_main( int, char*[] )
128{
129    mod_a a( "a" );
130    mod_b b( "b" );
131    sc_semaphore semaphore( "semaphore", 1 );
132
133    a.semaphore( semaphore );
134    b.semaphore( semaphore );
135
136    sc_start( 40, SC_NS );
137
138    return 0;
139}
140