1/***************************************************************************** 2 3 Licensed to Accellera Systems Initiative Inc. (Accellera) under one or 4 more contributor license agreements. See the NOTICE file distributed 5 with this work for additional information regarding copyright ownership. 6 Accellera licenses this file to you under the Apache License, Version 2.0 7 (the "License"); you may not use this file except in compliance with the 8 License. You may obtain a copy of the License at 9 10 http://www.apache.org/licenses/LICENSE-2.0 11 12 Unless required by applicable law or agreed to in writing, software 13 distributed under the License is distributed on an "AS IS" BASIS, 14 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or 15 implied. See the License for the specific language governing 16 permissions and limitations under the License. 17 18 *****************************************************************************/ 19 20/***************************************************************************** 21 22 sc_cor_pthread.h -- Coroutine implementation with pthreads. 23 24 Original Author: Andy Goodrich, Forte Design Systems, 2002-11-10 25 26 CHANGE LOG AT THE END OF THE FILE 27 *****************************************************************************/ 28 29 30#ifndef SC_COR_PTHREAD_H 31#define SC_COR_PTHREAD_H 32 33 34#if defined(SC_USE_PTHREADS) 35 36#include "sysc/kernel/sc_cor.h" 37#include "sysc/kernel/sc_cmnhdr.h" 38#include <pthread.h> 39 40namespace sc_core { 41 42class sc_cor_pkg_pthread; 43typedef sc_cor_pkg_pthread sc_cor_pkg_t; 44 45// ---------------------------------------------------------------------------- 46// CLASS : sc_cor_pthread 47// 48// Coroutine class implemented with Posix Threads. 49// 50// Notes: 51// (1) The thread creation mutex and the creation condition are used to 52// suspend the thread creating another one until the created thread 53// reaches its invoke_module_method. This allows us to get control of 54// thread scheduling away from the pthread package. 55// ---------------------------------------------------------------------------- 56 57class sc_cor_pthread : public sc_cor 58{ 59 public: 60 61 // constructor 62 sc_cor_pthread(); 63 64 // destructor 65 virtual ~sc_cor_pthread(); 66 67 // module method invocator (starts thread execution) 68 static void* invoke_module_method( void* context_p ); 69 70 public: 71 static sc_cor_pthread* m_active_cor_p; // Active coroutine. 72 73 public: 74 sc_cor_fn* m_cor_fn; // Core function. 75 void* m_cor_fn_arg; // Core function argument. 76 pthread_mutex_t m_mutex; // Mutex to suspend thread on. 77 sc_cor_pkg_pthread* m_pkg_p; // the creating coroutine package 78 pthread_cond_t m_pt_condition; // Condition waiting for. 79 pthread_t m_thread; // Our pthread storage. 80 81private: 82 83 // disabled 84 sc_cor_pthread( const sc_cor_pthread& ); 85 sc_cor_pthread& operator = ( const sc_cor_pthread& ); 86}; 87 88 89// ---------------------------------------------------------------------------- 90// CLASS : sc_cor_pkg_pthread 91// 92// Coroutine package class implemented with Posix Threads. 93// ---------------------------------------------------------------------------- 94 95class sc_cor_pkg_pthread 96: public sc_cor_pkg 97{ 98public: 99 100 // constructor 101 sc_cor_pkg_pthread( sc_simcontext* simc ); 102 103 // destructor 104 virtual ~sc_cor_pkg_pthread(); 105 106 // create a new coroutine 107 virtual sc_cor* create( std::size_t stack_size, sc_cor_fn* fn, void* arg ); 108 109 // yield to the next coroutine 110 virtual void yield( sc_cor* next_cor ); 111 112 // abort the current coroutine (and resume the next coroutine) 113 virtual void abort( sc_cor* next_cor ); 114 115 // get the main coroutine 116 virtual sc_cor* get_main(); 117 118private: 119 120 static int instance_count; 121 122private: 123 124 // disabled 125 sc_cor_pkg_pthread(); 126 sc_cor_pkg_pthread( const sc_cor_pkg_pthread& ); 127 sc_cor_pkg_pthread& operator = ( const sc_cor_pkg_pthread& ); 128}; 129 130} // namespace sc_core 131 132#endif 133 134// $Log: sc_cor_pthread.h,v $ 135// Revision 1.5 2011/08/26 20:46:09 acg 136// Andy Goodrich: moved the modification log to the end of the file to 137// eliminate source line number skew when check-ins are done. 138// 139// Revision 1.4 2011/02/18 20:27:14 acg 140// Andy Goodrich: Updated Copyrights. 141// 142// Revision 1.3 2011/02/13 21:47:37 acg 143// Andy Goodrich: update copyright notice. 144// 145// Revision 1.2 2008/05/22 17:06:25 acg 146// Andy Goodrich: updated copyright notice to include 2008. 147// 148// Revision 1.1.1.1 2006/12/15 20:20:05 acg 149// SystemC 2.3 150// 151// Revision 1.3 2006/01/13 18:44:29 acg 152// Added $Log to record CVS changes into the source. 153// 154 155#endif // defined(SC_USE_PTHREADS) 156 157// Taf! 158