00001 /***************************************************************************** 00002 00003 The following code is derived, directly or indirectly, from the SystemC 00004 source code Copyright (c) 1996-2008 by all Contributors. 00005 All Rights reserved. 00006 00007 The contents of this file are subject to the restrictions and limitations 00008 set forth in the SystemC Open Source License Version 3.0 (the "License"); 00009 You may not use this file except in compliance with such restrictions and 00010 limitations. You may obtain instructions on how to receive a copy of the 00011 License at http://www.systemc.org/. Software distributed by Contributors 00012 under the License is distributed on an "AS IS" basis, WITHOUT WARRANTY OF 00013 ANY KIND, either express or implied. See the License for the specific 00014 language governing rights and limitations under the License. 00015 00016 *****************************************************************************/ 00017 00018 #ifndef __PEQ_WITH_GET_H__ 00019 #define __PEQ_WITH_GET_H__ 00020 00021 //#include "tlm.h" 00022 #include <systemc> 00023 #include <map> 00024 00025 namespace tlm_utils { 00026 00027 template <class PAYLOAD> 00028 class peq_with_get : public sc_core::sc_object 00029 { 00030 public: 00031 typedef PAYLOAD transaction_type; 00032 typedef std::pair<const sc_core::sc_time, transaction_type*> pair_type; 00033 00034 public: 00035 peq_with_get(const char* name) : sc_core::sc_object(name) 00036 { 00037 } 00038 00039 void notify(transaction_type& trans, sc_core::sc_time& t) 00040 { 00041 m_scheduled_events.insert(pair_type(t + sc_core::sc_time_stamp(), &trans)); 00042 m_event.notify(t); 00043 } 00044 00045 void notify(transaction_type& trans) 00046 { 00047 m_scheduled_events.insert(pair_type(sc_core::sc_time_stamp(), &trans)); 00048 m_event.notify(); // immediate notification 00049 } 00050 00051 // needs to be called until it returns 0 00052 transaction_type* get_next_transaction() 00053 { 00054 if (m_scheduled_events.empty()) { 00055 return 0; 00056 } 00057 00058 sc_core::sc_time now = sc_core::sc_time_stamp(); 00059 if (m_scheduled_events.begin()->first <= now) { 00060 transaction_type* trans = m_scheduled_events.begin()->second; 00061 m_scheduled_events.erase(m_scheduled_events.begin()); 00062 return trans; 00063 } 00064 00065 m_event.notify(m_scheduled_events.begin()->first - now); 00066 00067 return 0; 00068 } 00069 00070 sc_core::sc_event& get_event() 00071 { 00072 return m_event; 00073 } 00074 00075 private: 00076 std::multimap<const sc_core::sc_time, transaction_type*> m_scheduled_events; 00077 sc_core::sc_event m_event; 00078 }; 00079 00080 } 00081 00082 #endif
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