| /***************************************************************************** |
| |
| 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! |