diff options
Diffstat (limited to 'ext/systemc/src/sysc/communication/sc_mutex_if.h')
| -rw-r--r-- | ext/systemc/src/sysc/communication/sc_mutex_if.h | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/ext/systemc/src/sysc/communication/sc_mutex_if.h b/ext/systemc/src/sysc/communication/sc_mutex_if.h new file mode 100644 index 000000000..6fa934135 --- /dev/null +++ b/ext/systemc/src/sysc/communication/sc_mutex_if.h @@ -0,0 +1,146 @@ +/***************************************************************************** + + 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_mutex_if.h -- The sc_mutex_if interface class. + + Original Author: Martin Janssen, Synopsys, Inc., 2001-05-21 + + CHANGE LOG IS AT THE END OF THE FILE + *****************************************************************************/ + +#ifndef SC_MUTEX_IF_H +#define SC_MUTEX_IF_H + +#include "sysc/communication/sc_interface.h" + +namespace sc_core { + +// ---------------------------------------------------------------------------- +// CLASS : sc_mutex_if +// +// The sc_mutex_if interface class. +// ---------------------------------------------------------------------------- + +class sc_mutex_if +: virtual public sc_interface +{ +public: + + // the classical operations: lock(), trylock(), and unlock() + + // blocks until mutex could be locked + virtual int lock() = 0; + + // returns -1 if mutex could not be locked + virtual int trylock() = 0; + + // returns -1 if mutex was not locked by caller + virtual int unlock() = 0; + +protected: + + // constructor + + sc_mutex_if() + {} + +private: + + // disabled + sc_mutex_if( const sc_mutex_if& ); + sc_mutex_if& operator = ( const sc_mutex_if& ); +}; + +// ---------------------------------------------------------------------------- +// CLASS : sc_scoped_lock +// +// The sc_scoped_lock class to lock (and automatically release) a mutex. +// ---------------------------------------------------------------------------- + +//template< typename Lockable = sc_mutex_if > +class sc_scoped_lock +{ +public: + //typedef Lockable lockable_type; + typedef sc_mutex_if lockable_type; + + explicit + sc_scoped_lock( lockable_type& mtx ) + : m_ref(mtx) + , m_active(true) + { + m_ref.lock(); + } + + bool release() + { + if( m_active ) + { + m_ref.unlock(); + m_active = false; + return true; + } + return false; + } + + ~sc_scoped_lock() + { + release(); + } + +private: + // disabled + sc_scoped_lock( const sc_scoped_lock& ); + sc_scoped_lock& operator=( const sc_scoped_lock& ); + + lockable_type& m_ref; + bool m_active; +}; + +} // namespace sc_core + +//$Log: sc_mutex_if.h,v $ +//Revision 1.4 2011/08/26 20:45:41 acg +// Andy Goodrich: moved the modification log to the end of the file to +// eliminate source line number skew when check-ins are done. +// +//Revision 1.3 2011/04/19 02:36:26 acg +// Philipp A. Hartmann: new aysnc_update and mutex support. +// +//Revision 1.2 2011/02/18 20:23:45 acg +// Andy Goodrich: Copyright update. +// +//Revision 1.1.1.1 2006/12/15 20:20:04 acg +//SystemC 2.3 +// +//Revision 1.2 2006/01/03 23:18:26 acg +//Changed copyright to include 2006. +// +//Revision 1.1.1.1 2005/12/19 23:16:43 acg +//First check in of SystemC 2.1 into its own archive. +// +//Revision 1.8 2005/06/10 22:43:55 acg +//Added CVS change log annotation. +// + +#endif + +// Taf! |