test01.cpp revision 12855:588919e0e4aa 
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10    http://www.apache.org/licenses/LICENSE-2.0
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12  Unless required by applicable law or agreed to in writing, software
13  distributed under the License is distributed on an "AS IS" BASIS,
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15  implied.  See the License for the specific language governing
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19
20/*****************************************************************************
21
22  test01.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 primitive channel -- mutex case
39
40#include "systemc.h"
41
42SC_MODULE( mod_a )
43{
44    sc_semaphore 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    void proc_b()
79    {
80        while( true ) {
81            wait( 2, SC_NS );
82            write( "proc_b - lock requested" );
83            semaphore.wait();
84            write( "proc_b - lock obtained" );
85            wait( 4, SC_NS );
86            if( semaphore.post() == 0 ) {
87                write( "proc_b - unlock successful" );
88            } else {
89                write( "proc_b - unlock failed" );
90            }
91            wait( 3, SC_NS );
92            if( semaphore.trywait() == 0 ) {
93                write( "proc_b - trylock successful" );
94            } else {
95                write( "proc_b - trylock failed" );
96            }
97            if( semaphore.post() == 0 ) {
98                write( "proc_b - unlock successful" );
99            } else {
100                write( "proc_b - unlock failed" );
101            }
102        }
103    }
104
105    SC_CTOR( mod_a )
106    : semaphore( 1 )
107    {
108        SC_THREAD( proc_a );
109        SC_THREAD( proc_b );
110    }
111};
112
113int
114sc_main( int, char*[] )
115{
116    mod_a a( "a" );
117
118    sc_start( 40, SC_NS );
119
120    return 0;
121}
122