test1.cpp revision 12855:588919e0e4aa 
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19
20//*****************************************************************************
21//
22//  test01.cpp -- test self suspends on processes
23//
24//  Original Author: Andy Goodrich, Forte Design Systems, Inc.
25//
26//  CVS MODIFICATION LOG - modifiers, enter your name, affiliation, date and
27//  changes you are making here.
28//
29// $Log: test1.cpp,v $
30// Revision 1.4  2011/04/02 00:07:44  acg
31//  Andy Goodrich: new message format.
32//
33// Revision 1.3  2011/03/07 19:32:07  acg
34//  Andy Goodrich: addition to set sc_core::sc_allow_process_control_corners
35//  to true so that this test avoids corner case error messages.
36//
37// Revision 1.2  2009/07/28 18:43:50  acg
38//  Andy Goodrich: new standard test bench version of this test.
39//
40// Revision 1.2  2009/07/28 01:09:48  acg
41//  Andy Goodrich: replacement test using standardized environment.
42//
43//*****************************************************************************
44
45#define SC_INCLUDE_DYNAMIC_PROCESSES
46#include "systemc.h"
47
48enum my_process_states {
49    ST_DISABLED,
50    ST_NORMAL,
51    ST_SUSPENDED
52};
53
54inline ostream& time_stamp( ostream& os )
55{
56    os << dec << sc_time_stamp() << "[" << sc_delta_count() << "]: ";
57    return os;
58}
59
60SC_MODULE(top) {
61    // constructor:
62
63    SC_CTOR(top) :
64        m_state_cthread0(ST_NORMAL),
65	m_state_method0(ST_NORMAL),
66        m_state_thread0(ST_NORMAL)
67    {
68        SC_THREAD(stimulator0);
69
70        SC_CTHREAD( target_cthread0, m_clk.pos() );
71        m_target_cthread0 = sc_get_current_process_handle();
72
73        SC_METHOD(target_method0);
74	sensitive << m_clk.pos();
75        m_target_method0 = sc_get_current_process_handle();
76
77        SC_THREAD(target_thread0);
78        m_target_thread0 = sc_get_current_process_handle();
79    }
80
81    // processes:
82
83    void stimulator0();
84    void target_cthread0();
85    void target_method0();
86    void target_thread0();
87
88    // Storage:
89
90    sc_in<bool>       m_clk;
91    int               m_state_cthread0;
92    int               m_state_method0;
93    int               m_state_thread0;
94    sc_process_handle m_target_cthread0;
95    sc_process_handle m_target_method0;
96    sc_process_handle m_target_thread0;
97};
98
99void top::stimulator0()
100{
101    const char* name = "stimulator";
102    wait(10, SC_NS);
103    cout << endl;
104    time_stamp(cout) << name << ": resuming target_cthread0" << endl;
105    cout << endl;
106    m_state_cthread0 = ST_NORMAL;
107    m_target_cthread0.resume();
108    wait(10, SC_NS);
109
110    cout << endl;
111    time_stamp(cout) << name << ": resuming target_method0" << endl;
112    cout << endl;
113    m_state_method0 = ST_NORMAL;
114    m_target_method0.resume();
115    wait(10, SC_NS);
116
117    cout << endl;
118    time_stamp(cout) << name << ": resuming target_thread0" << endl;
119    cout << endl;
120    m_state_thread0 = ST_NORMAL;
121    m_target_thread0.resume();
122    ::sc_core::wait(1000, SC_NS);
123
124    cout << endl;
125    time_stamp(cout) << name << ": terminating" << endl;
126    sc_stop();
127}
128
129void top::target_cthread0()
130{
131    int         i;
132    const char* name = "target_cthread0";
133
134    time_stamp(cout) << name  << ": starting" << endl;
135    time_stamp(cout) << name  << ": issuing self suspend" << endl;
136    cout << endl;
137    m_state_cthread0 = ST_SUSPENDED;
138    m_target_cthread0.suspend();
139    time_stamp(cout) << name  << ": back from self suspend" << endl;
140    for ( i = 0; i < 100; i++ )
141    {
142	if ( m_state_cthread0 == ST_SUSPENDED )
143	{
144	    time_stamp(cout) << name  << ": ERROR should not see this" << endl;
145	}
146        wait();
147    }
148    time_stamp(cout) << name  << ": terminating" << endl;
149}
150
151void top::target_method0()
152{
153    const char* name = "target_method0";
154    static int  state = 0;
155    switch( state )
156    {
157      case 0:
158        time_stamp(cout) << name  << ": starting" << endl;
159        time_stamp(cout) << name  << ": issuing self suspend" << endl;
160	m_state_method0 = ST_SUSPENDED;
161        m_target_method0.suspend();
162        time_stamp(cout) << name  << ": after issuing self suspend" << endl;
163        cout << endl;
164        break;
165      case 1:
166	time_stamp(cout) << name  << ": back from self suspend" << endl;
167	// fall through
168      default:
169	if ( m_state_method0 == ST_SUSPENDED )
170	{
171	    time_stamp(cout) << name  << ": ERROR should not see this" << endl;
172	}
173        break;
174      case 99:
175        time_stamp(cout) << name  << ": terminating" << endl;
176        break;
177    }
178    state++;
179}
180
181void top::target_thread0()
182{
183    const char* name = "target_thread0";
184
185    time_stamp(cout) << name  << ": starting" << endl;
186    time_stamp(cout) << name  << ": issuing self suspend" << endl;
187    cout << endl;
188    m_state_thread0 = ST_SUSPENDED;
189    m_target_thread0.suspend();
190    time_stamp(cout) << name  << ": back from self suspend" << endl;
191
192    // We wait a long enough time that our event will not occur until
193    // after we are resumed. Otherwise this thread will just go away
194    // quietly when the suspend cancels the event.
195
196    ::sc_core::wait(80, SC_NS);
197    if ( m_state_thread0 == ST_SUSPENDED )
198    {
199	time_stamp(cout) << name  << ": ERROR should not see this" << endl;
200    }
201    time_stamp(cout) << name  << ": terminating" << endl;
202}
203
204int sc_main (int argc, char *argv[])
205{
206    sc_core::sc_allow_process_control_corners = true;
207    sc_clock clock( "clock", 1.0, SC_NS );
208
209    top* top_p = new top("top");
210    top_p->m_clk(clock);
211
212    sc_core::sc_allow_process_control_corners = true;
213    sc_start();
214    return 0;
215}
216
217