1/* 2 * Copyright 2018 Google, Inc. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: redistributions of source code must retain the above copyright 7 * notice, this list of conditions and the following disclaimer; 8 * redistributions in binary form must reproduce the above copyright 9 * notice, this list of conditions and the following disclaimer in the 10 * documentation and/or other materials provided with the distribution; 11 * neither the name of the copyright holders nor the names of its 12 * contributors may be used to endorse or promote products derived from 13 * this software without specific prior written permission. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 18 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 19 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 21 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 25 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 * 27 * Authors: Gabe Black 28 */ 29 30#include "systemc/ext/channel/sc_event_queue.hh" 31#include "systemc/ext/core/sc_main.hh" 32#include "systemc/ext/core/sc_time.hh" 33 34namespace sc_core 35{ 36 37sc_event_queue::sc_event_queue(sc_module_name name) : 38 sc_interface(), sc_event_queue_if(), sc_module(name) 39{ 40 SC_METHOD(_trigger); 41 dont_initialize(); 42 sensitive << _defaultEvent; 43} 44 45sc_event_queue::~sc_event_queue() {} 46 47void 48sc_event_queue::notify(double d, sc_time_unit tu) 49{ 50 notify(sc_time(d, tu)); 51} 52 53void 54sc_event_queue::notify(const sc_time &t) 55{ 56 _times.push(sc_time_stamp() + t); 57 _defaultEvent.notify(_times.top() - sc_time_stamp()); 58} 59 60void 61sc_event_queue::cancel_all() 62{ 63 _defaultEvent.cancel(); 64 _times = std::priority_queue< 65 sc_time, std::vector<sc_time>, std::greater<sc_time> >(); 66} 67 68const sc_event & 69sc_event_queue::default_event() const 70{ 71 return _defaultEvent; 72} 73 74void 75sc_event_queue::_trigger() 76{ 77 _times.pop(); 78 if (!_times.empty()) 79 _defaultEvent.notify(_times.top() - sc_time_stamp()); 80} 81 82} // namespace sc_core 83