peq_with_get.h revision 13511:dc5864c73df3
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// 12-Jan-2009 John Aynsley Bug fix. sc_time argument to notify should be const 21// 20-Mar-2009 John Aynsley Add cancel_all() method 22 23 24#ifndef __PEQ_WITH_GET_H__ 25#define __PEQ_WITH_GET_H__ 26 27#include <systemc> 28//#include <tlm> 29#include <map> 30 31namespace tlm_utils { 32 33template <class PAYLOAD> 34class peq_with_get : public sc_core::sc_object 35{ 36public: 37 typedef PAYLOAD transaction_type; 38 typedef std::pair<const sc_core::sc_time, transaction_type*> pair_type; 39 40public: 41 peq_with_get(const char* name) : sc_core::sc_object(name) 42 { 43 } 44 45 void notify(transaction_type& trans, const sc_core::sc_time& t) 46 { 47 m_scheduled_events.insert(pair_type(t + sc_core::sc_time_stamp(), &trans)); 48 m_event.notify(t); 49 } 50 51 void notify(transaction_type& trans) 52 { 53 m_scheduled_events.insert(pair_type(sc_core::sc_time_stamp(), &trans)); 54 m_event.notify(); // immediate notification 55 } 56 57 // needs to be called until it returns 0 58 transaction_type* get_next_transaction() 59 { 60 if (m_scheduled_events.empty()) { 61 return 0; 62 } 63 64 sc_core::sc_time now = sc_core::sc_time_stamp(); 65 if (m_scheduled_events.begin()->first <= now) { 66 transaction_type* trans = m_scheduled_events.begin()->second; 67 m_scheduled_events.erase(m_scheduled_events.begin()); 68 return trans; 69 } 70 71 m_event.notify(m_scheduled_events.begin()->first - now); 72 73 return 0; 74 } 75 76 sc_core::sc_event& get_event() 77 { 78 return m_event; 79 } 80 81 // Cancel all events from the event queue 82 void cancel_all() { 83 m_scheduled_events.clear(); 84 m_event.cancel(); 85 } 86 87private: 88 std::multimap<const sc_core::sc_time, transaction_type*> m_scheduled_events; 89 sc_core::sc_event m_event; 90}; 91 92} 93 94#endif 95