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Diffstat (limited to 'ext/systemc/src/sysc/kernel/sc_module_name.h')
| -rw-r--r-- | ext/systemc/src/sysc/kernel/sc_module_name.h | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/ext/systemc/src/sysc/kernel/sc_module_name.h b/ext/systemc/src/sysc/kernel/sc_module_name.h new file mode 100644 index 000000000..a2149cc6a --- /dev/null +++ b/ext/systemc/src/sysc/kernel/sc_module_name.h @@ -0,0 +1,140 @@ +/***************************************************************************** + + Licensed to Accellera Systems Initiative Inc. (Accellera) under one or + more contributor license agreements. See the NOTICE file distributed + with this work for additional information regarding copyright ownership. + Accellera licenses this file to you under the Apache License, Version 2.0 + (the "License"); you may not use this file except in compliance with the + License. You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or + implied. See the License for the specific language governing + permissions and limitations under the License. + + *****************************************************************************/ + +/***************************************************************************** + + sc_module_name.h -- An object used to help manage object names + and hierarchy. + + Original Author: Stan Y. Liao, Synopsys, Inc. + + CHANGE LOG AT THE END OF THE FILE + *****************************************************************************/ + +// $Log: sc_module_name.h,v $ +// Revision 1.5 2011/08/26 20:46:10 acg +// Andy Goodrich: moved the modification log to the end of the file to +// eliminate source line number skew when check-ins are done. +// + +#ifndef SC_MODULE_NAME_H +#define SC_MODULE_NAME_H + + +namespace sc_core { + +class sc_module; +class sc_simcontext; + + +// ---------------------------------------------------------------------------- +// CLASS : sc_module_name +// +// Module name class. +// ---------------------------------------------------------------------------- + +class sc_module_name +{ + friend class sc_module; + friend class sc_object_manager; + +public: + + sc_module_name( const char* ); + sc_module_name( const sc_module_name& ); + + ~sc_module_name(); + + operator const char*() const; + +protected: + inline void clear_module( sc_module* module_p ); + inline void set_module( sc_module* module_p ); + +private: + + const char* m_name; + sc_module* m_module_p; + sc_module_name* m_next; + sc_simcontext* m_simc; + bool m_pushed; + +private: + + // disabled + sc_module_name(); + sc_module_name& operator = ( const sc_module_name& ); +}; + +inline void sc_module_name::clear_module( sc_module* module_p ) +{ + assert( m_module_p == module_p ); + m_module_p = 0; +} + +inline void sc_module_name::set_module( sc_module* module_p ) +{ + m_module_p = module_p; +} + +} // namespace sc_core + +// Revision 1.4 2011/02/18 20:27:14 acg +// Andy Goodrich: Updated Copyrights. +// +// Revision 1.3 2011/02/13 21:47:37 acg +// Andy Goodrich: update copyright notice. +// +// Revision 1.2 2008/05/22 17:06:26 acg +// Andy Goodrich: updated copyright notice to include 2008. +// +// Revision 1.1.1.1 2006/12/15 20:20:05 acg +// SystemC 2.3 +// +// Revision 1.4 2006/03/14 23:56:58 acg +// Andy Goodrich: This fixes a bug when an exception is thrown in +// sc_module::sc_module() for a dynamically allocated sc_module +// object. We are calling sc_module::end_module() on a module that has +// already been deleted. The scenario runs like this: +// +// a) the sc_module constructor is entered +// b) the exception is thrown +// c) the exception processor deletes the storage for the sc_module +// d) the stack is unrolled causing the sc_module_name instance to be deleted +// e) ~sc_module_name() calls end_module() with its pointer to the sc_module +// f) because the sc_module has been deleted its storage is corrupted, +// either by linking it to a free space chain, or by reuse of some sort +// g) the m_simc field is garbage +// h) the m_object_manager field is also garbage +// i) an exception occurs +// +// This does not happen for automatic sc_module instances since the +// storage for the module is not reclaimed its just part of the stack. +// +// I am fixing this by having the destructor for sc_module clear the +// module pointer in its sc_module_name instance. That cuts things at +// step (e) above, since the pointer will be null if the module has +// already been deleted. To make sure the module stack is okay, I call +// end-module() in ~sc_module in the case where there is an +// sc_module_name pointer lying around. +// +// Revision 1.3 2006/01/13 18:44:30 acg +// Added $Log to record CVS changes into the source. + +#endif |