SystemC  Recoding Infrastructure for SystemC v0.6.0 derived from Accellera SystemC 2.3.1
Accellera SystemC proof-of-concept library
sc_module_name.h
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18 /*****************************************************************************
19 
20  sc_module_name.h -- An object used to help manage object names
21  and hierarchy.
22 
23  Original Author: Stan Y. Liao, Synopsys, Inc.
24 
25  CHANGE LOG AT THE END OF THE FILE
26  *****************************************************************************/
27 
28 // $Log: sc_module_name.h,v $
29 // Revision 1.5 2011/08/26 20:46:10 acg
30 // Andy Goodrich: moved the modification log to the end of the file to
31 // eliminate source line number skew when check-ins are done.
32 //
33 
34 #ifndef SC_MODULE_NAME_H
35 #define SC_MODULE_NAME_H
36 
37 
38 namespace sc_core {
39 
40 class sc_module;
41 class sc_simcontext;
42 
43 
44 /**************************************************************************/
51 {
52  friend class sc_module;
53 
54  // 04/07/2015 GL: a new sc_channel class is derived from sc_module
55  friend class sc_channel;
56 
57  friend class sc_object_manager;
58 
59 public:
60 
61  sc_module_name( const char* );
63 
65 
66  operator const char*() const;
67 
68 protected:
69  inline void clear_module( sc_module* module_p );
70  inline void set_module( sc_module* module_p );
71 
72 private:
73 
74  const char* m_name;
75  sc_module* m_module_p;
76  sc_module_name* m_next;
77  sc_simcontext* m_simc;
78  bool m_pushed;
79 
80 private:
81 
82  // disabled
84  sc_module_name& operator = ( const sc_module_name& );
85 };
86 
87 inline void sc_module_name::clear_module( sc_module* module_p )
88 {
89  assert( m_module_p == module_p );
90  m_module_p = 0;
91 }
92 
93 inline void sc_module_name::set_module( sc_module* module_p )
94 {
95  m_module_p = module_p;
96 }
97 
98 } // namespace sc_core
99 
100 // Revision 1.4 2011/02/18 20:27:14 acg
101 // Andy Goodrich: Updated Copyrights.
102 //
103 // Revision 1.3 2011/02/13 21:47:37 acg
104 // Andy Goodrich: update copyright notice.
105 //
106 // Revision 1.2 2008/05/22 17:06:26 acg
107 // Andy Goodrich: updated copyright notice to include 2008.
108 //
109 // Revision 1.1.1.1 2006/12/15 20:20:05 acg
110 // SystemC 2.3
111 //
112 // Revision 1.4 2006/03/14 23:56:58 acg
113 // Andy Goodrich: This fixes a bug when an exception is thrown in
114 // sc_module::sc_module() for a dynamically allocated sc_module
115 // object. We are calling sc_module::end_module() on a module that has
116 // already been deleted. The scenario runs like this:
117 //
118 // a) the sc_module constructor is entered
119 // b) the exception is thrown
120 // c) the exception processor deletes the storage for the sc_module
121 // d) the stack is unrolled causing the sc_module_name instance to be deleted
122 // e) ~sc_module_name() calls end_module() with its pointer to the sc_module
123 // f) because the sc_module has been deleted its storage is corrupted,
124 // either by linking it to a free space chain, or by reuse of some sort
125 // g) the m_simc field is garbage
126 // h) the m_object_manager field is also garbage
127 // i) an exception occurs
128 //
129 // This does not happen for automatic sc_module instances since the
130 // storage for the module is not reclaimed its just part of the stack.
131 //
132 // I am fixing this by having the destructor for sc_module clear the
133 // module pointer in its sc_module_name instance. That cuts things at
134 // step (e) above, since the pointer will be null if the module has
135 // already been deleted. To make sure the module stack is okay, I call
136 // end-module() in ~sc_module in the case where there is an
137 // sc_module_name pointer lying around.
138 //
139 // Revision 1.3 2006/01/13 18:44:30 acg
140 // Added $Log to record CVS changes into the source.
141 
142 #endif
Module name class.
void clear_module(sc_module *module_p)
void set_module(sc_module *module_p)
The simulation context.
Base class for all structural entities.
Definition: sc_module.h:83
Base class for all hierarchical channels.
Definition: sc_module.h:712