| /***************************************************************************** |
| |
| 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_cor_pthread.h -- Coroutine implementation with pthreads. |
| |
| Original Author: Andy Goodrich, Forte Design Systems, 2002-11-10 |
| |
| CHANGE LOG AT THE END OF THE FILE |
| *****************************************************************************/ |
| |
| |
| #ifndef SC_COR_PTHREAD_H |
| #define SC_COR_PTHREAD_H |
| |
| |
| #if defined(SC_USE_PTHREADS) |
| |
| #include "sysc/kernel/sc_cor.h" |
| #include "sysc/kernel/sc_cmnhdr.h" |
| #include <pthread.h> |
| |
| namespace sc_core { |
| |
| class sc_cor_pkg_pthread; |
| typedef sc_cor_pkg_pthread sc_cor_pkg_t; |
| |
| // ---------------------------------------------------------------------------- |
| // CLASS : sc_cor_pthread |
| // |
| // Coroutine class implemented with Posix Threads. |
| // |
| // Notes: |
| // (1) The thread creation mutex and the creation condition are used to |
| // suspend the thread creating another one until the created thread |
| // reaches its invoke_module_method. This allows us to get control of |
| // thread scheduling away from the pthread package. |
| // ---------------------------------------------------------------------------- |
| |
| class sc_cor_pthread : public sc_cor |
| { |
| public: |
| |
| // constructor |
| sc_cor_pthread(); |
| |
| // destructor |
| virtual ~sc_cor_pthread(); |
| |
| // module method invocator (starts thread execution) |
| static void* invoke_module_method( void* context_p ); |
| |
| public: |
| static sc_cor_pthread* m_active_cor_p; // Active coroutine. |
| |
| public: |
| sc_cor_fn* m_cor_fn; // Core function. |
| void* m_cor_fn_arg; // Core function argument. |
| pthread_mutex_t m_mutex; // Mutex to suspend thread on. |
| sc_cor_pkg_pthread* m_pkg_p; // the creating coroutine package |
| pthread_cond_t m_pt_condition; // Condition waiting for. |
| pthread_t m_thread; // Our pthread storage. |
| |
| private: |
| |
| // disabled |
| sc_cor_pthread( const sc_cor_pthread& ); |
| sc_cor_pthread& operator = ( const sc_cor_pthread& ); |
| }; |
| |
| |
| // ---------------------------------------------------------------------------- |
| // CLASS : sc_cor_pkg_pthread |
| // |
| // Coroutine package class implemented with Posix Threads. |
| // ---------------------------------------------------------------------------- |
| |
| class sc_cor_pkg_pthread |
| : public sc_cor_pkg |
| { |
| public: |
| |
| // constructor |
| sc_cor_pkg_pthread( sc_simcontext* simc ); |
| |
| // destructor |
| virtual ~sc_cor_pkg_pthread(); |
| |
| // create a new coroutine |
| virtual sc_cor* create( std::size_t stack_size, sc_cor_fn* fn, void* arg ); |
| |
| // yield to the next coroutine |
| virtual void yield( sc_cor* next_cor ); |
| |
| // abort the current coroutine (and resume the next coroutine) |
| virtual void abort( sc_cor* next_cor ); |
| |
| // get the main coroutine |
| virtual sc_cor* get_main(); |
| |
| private: |
| |
| static int instance_count; |
| |
| private: |
| |
| // disabled |
| sc_cor_pkg_pthread(); |
| sc_cor_pkg_pthread( const sc_cor_pkg_pthread& ); |
| sc_cor_pkg_pthread& operator = ( const sc_cor_pkg_pthread& ); |
| }; |
| |
| } // namespace sc_core |
| |
| #endif |
| |
| // $Log: sc_cor_pthread.h,v $ |
| // Revision 1.5 2011/08/26 20:46:09 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 1.4 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 17:06:25 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 1.3 2006/01/13 18:44:29 acg |
| // Added $Log to record CVS changes into the source. |
| // |
| |
| #endif // defined(SC_USE_PTHREADS) |
| |
| // Taf! |