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Diffstat (limited to 'ext/systemc/src/sysc/kernel/sc_cor_pthread.h')
| -rw-r--r-- | ext/systemc/src/sysc/kernel/sc_cor_pthread.h | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/ext/systemc/src/sysc/kernel/sc_cor_pthread.h b/ext/systemc/src/sysc/kernel/sc_cor_pthread.h new file mode 100644 index 000000000..f4d835de3 --- /dev/null +++ b/ext/systemc/src/sysc/kernel/sc_cor_pthread.h @@ -0,0 +1,157 @@ +/***************************************************************************** + + 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! |