00001 /***************************************************************************** 00002 00003 The following code is derived, directly or indirectly, from the SystemC 00004 source code Copyright (c) 1996-2006 by all Contributors. 00005 All Rights reserved. 00006 00007 The contents of this file are subject to the restrictions and limitations 00008 set forth in the SystemC Open Source License Version 2.4 (the "License"); 00009 You may not use this file except in compliance with such restrictions and 00010 limitations. You may obtain instructions on how to receive a copy of the 00011 License at http://www.systemc.org/. Software distributed by Contributors 00012 under the License is distributed on an "AS IS" basis, WITHOUT WARRANTY OF 00013 ANY KIND, either express or implied. See the License for the specific 00014 language governing rights and limitations under the License. 00015 00016 *****************************************************************************/ 00017 00018 /***************************************************************************** 00019 00020 sc_mutex.h -- The sc_mutex primitive channel class. 00021 00022 Original Author: Martin Janssen, Synopsys, Inc., 2001-05-21 00023 00024 *****************************************************************************/ 00025 00026 /***************************************************************************** 00027 00028 MODIFICATION LOG - modifiers, enter your name, affiliation, date and 00029 changes you are making here. 00030 00031 Name, Affiliation, Date: 00032 Description of Modification: 00033 00034 *****************************************************************************/ 00035 //$Log: sc_mutex.h,v $ 00036 //Revision 1.1.1.1 2006/12/15 20:31:35 acg 00037 //SystemC 2.2 00038 // 00039 //Revision 1.2 2006/01/03 23:18:26 acg 00040 //Changed copyright to include 2006. 00041 // 00042 //Revision 1.1.1.1 2005/12/19 23:16:43 acg 00043 //First check in of SystemC 2.1 into its own archive. 00044 // 00045 //Revision 1.10 2005/09/15 23:01:51 acg 00046 //Added std:: prefix to appropriate methods and types to get around 00047 //issues with the Edison Front End. 00048 // 00049 //Revision 1.9 2005/06/10 22:43:55 acg 00050 //Added CVS change log annotation. 00051 // 00052 00053 #ifndef SC_MUTEX_H 00054 #define SC_MUTEX_H 00055 00056 #include "sysc/kernel/sc_event.h" 00057 #include "sysc/communication/sc_prim_channel.h" 00058 #include "sysc/communication/sc_mutex_if.h" 00059 00060 namespace sc_core { 00061 00062 // ---------------------------------------------------------------------------- 00063 // CLASS : sc_mutex 00064 // 00065 // The sc_mutex primitive channel class. 00066 // ---------------------------------------------------------------------------- 00067 00068 class sc_mutex 00069 : public sc_mutex_if, 00070 public sc_prim_channel 00071 { 00072 public: 00073 00074 // constructors and destructor 00075 00076 sc_mutex(); 00077 explicit sc_mutex( const char* name_ ); 00078 virtual ~sc_mutex(); 00079 00080 00081 // interface methods 00082 00083 // blocks until mutex could be locked 00084 virtual int lock(); 00085 00086 // returns -1 if mutex could not be locked 00087 virtual int trylock(); 00088 00089 // returns -1 if mutex was not locked by caller 00090 virtual int unlock(); 00091 00092 virtual const char* kind() const 00093 { return "sc_mutex"; } 00094 00095 protected: 00096 00097 // support methods 00098 00099 bool in_use() const 00100 { return ( m_owner != 0 ); } 00101 00102 protected: 00103 00104 sc_process_b* m_owner; 00105 sc_event m_free; 00106 00107 private: 00108 00109 // disabled 00110 sc_mutex( const sc_mutex& ); 00111 sc_mutex& operator = ( const sc_mutex& ); 00112 }; 00113 00114 } // namespace sc_core 00115 00116 #endif 00117 00118 // Taf!
1.5.6