event.cc revision 13317
112955Sgabeblack@google.com/* 212955Sgabeblack@google.com * Copyright 2018 Google, Inc. 312955Sgabeblack@google.com * 412955Sgabeblack@google.com * Redistribution and use in source and binary forms, with or without 512955Sgabeblack@google.com * modification, are permitted provided that the following conditions are 612955Sgabeblack@google.com * met: redistributions of source code must retain the above copyright 712955Sgabeblack@google.com * notice, this list of conditions and the following disclaimer; 812955Sgabeblack@google.com * redistributions in binary form must reproduce the above copyright 912955Sgabeblack@google.com * notice, this list of conditions and the following disclaimer in the 1012955Sgabeblack@google.com * documentation and/or other materials provided with the distribution; 1112955Sgabeblack@google.com * neither the name of the copyright holders nor the names of its 1212955Sgabeblack@google.com * contributors may be used to endorse or promote products derived from 1312955Sgabeblack@google.com * this software without specific prior written permission. 1412955Sgabeblack@google.com * 1512955Sgabeblack@google.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 1612955Sgabeblack@google.com * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 1712955Sgabeblack@google.com * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 1812955Sgabeblack@google.com * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 1912955Sgabeblack@google.com * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 2012955Sgabeblack@google.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 2112955Sgabeblack@google.com * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2212955Sgabeblack@google.com * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2312955Sgabeblack@google.com * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2412955Sgabeblack@google.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 2512955Sgabeblack@google.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2612955Sgabeblack@google.com * 2712955Sgabeblack@google.com * Authors: Gabe Black 2812955Sgabeblack@google.com */ 2912955Sgabeblack@google.com 3012955Sgabeblack@google.com#include "systemc/core/event.hh" 3112955Sgabeblack@google.com 3212988Sgabeblack@google.com#include <algorithm> 3312955Sgabeblack@google.com#include <cstring> 3412955Sgabeblack@google.com#include <utility> 3512955Sgabeblack@google.com 3612957Sgabeblack@google.com#include "base/logging.hh" 3712957Sgabeblack@google.com#include "sim/core.hh" 3812955Sgabeblack@google.com#include "systemc/core/module.hh" 3912955Sgabeblack@google.com#include "systemc/core/scheduler.hh" 4013317Sgabeblack@google.com#include "systemc/ext/core/messages.hh" 4113086Sgabeblack@google.com#include "systemc/ext/core/sc_main.hh" 4213086Sgabeblack@google.com#include "systemc/ext/core/sc_module.hh" 4312955Sgabeblack@google.com 4412955Sgabeblack@google.comnamespace sc_gem5 4512955Sgabeblack@google.com{ 4612955Sgabeblack@google.com 4713303Sgabeblack@google.comEvent::Event(sc_core::sc_event *_sc_event, bool internal) : 4813303Sgabeblack@google.com Event(_sc_event, nullptr, internal) 4913303Sgabeblack@google.com{} 5012955Sgabeblack@google.com 5113303Sgabeblack@google.comEvent::Event(sc_core::sc_event *_sc_event, const char *_basename_cstr, 5213303Sgabeblack@google.com bool internal) : 5313086Sgabeblack@google.com _sc_event(_sc_event), _basename(_basename_cstr ? _basename_cstr : ""), 5413303Sgabeblack@google.com _inHierarchy(!internal), delayedNotify([this]() { this->notify(); }), 5513303Sgabeblack@google.com _triggeredStamp(~0ULL) 5612955Sgabeblack@google.com{ 5713086Sgabeblack@google.com if (_basename == "" && ::sc_core::sc_is_running()) 5813086Sgabeblack@google.com _basename = ::sc_core::sc_gen_unique_name("event"); 5913086Sgabeblack@google.com 6013303Sgabeblack@google.com parent = internal ? nullptr : pickParentObj(); 6112955Sgabeblack@google.com 6213303Sgabeblack@google.com if (internal) { 6313303Sgabeblack@google.com _basename = globalNameGen.gen(_basename); 6413303Sgabeblack@google.com _name = _basename; 6513303Sgabeblack@google.com } else { 6613303Sgabeblack@google.com std::string original_name = _basename; 6713303Sgabeblack@google.com _basename = pickUniqueName(parent, _basename); 6813127Sgabeblack@google.com 6913303Sgabeblack@google.com if (parent) { 7013303Sgabeblack@google.com Object *obj = Object::getFromScObject(parent); 7113303Sgabeblack@google.com obj->addChildEvent(_sc_event); 7213303Sgabeblack@google.com } else { 7313303Sgabeblack@google.com topLevelEvents.emplace(topLevelEvents.end(), _sc_event); 7413303Sgabeblack@google.com } 7513303Sgabeblack@google.com 7613303Sgabeblack@google.com std::string path = parent ? (std::string(parent->name()) + ".") : ""; 7713303Sgabeblack@google.com 7813303Sgabeblack@google.com if (original_name != "" && _basename != original_name) { 7913303Sgabeblack@google.com std::string message = path + original_name + 8013303Sgabeblack@google.com ". Latter declaration will be renamed to " + 8113303Sgabeblack@google.com path + _basename; 8213317Sgabeblack@google.com SC_REPORT_WARNING(sc_core::SC_ID_INSTANCE_EXISTS_, 8313317Sgabeblack@google.com message.c_str()); 8413303Sgabeblack@google.com } 8513303Sgabeblack@google.com 8613303Sgabeblack@google.com _name = path + _basename; 8712955Sgabeblack@google.com } 8812955Sgabeblack@google.com 8912955Sgabeblack@google.com allEvents.emplace(allEvents.end(), _sc_event); 9012955Sgabeblack@google.com 9112955Sgabeblack@google.com // Determine if we're in the hierarchy (created once initialization starts 9212955Sgabeblack@google.com // means no). 9312955Sgabeblack@google.com} 9412955Sgabeblack@google.com 9512955Sgabeblack@google.comEvent::~Event() 9612955Sgabeblack@google.com{ 9712955Sgabeblack@google.com if (parent) { 9812955Sgabeblack@google.com Object *obj = Object::getFromScObject(parent); 9912988Sgabeblack@google.com obj->delChildEvent(_sc_event); 10013303Sgabeblack@google.com } else if (inHierarchy()) { 10112988Sgabeblack@google.com EventsIt it = find(topLevelEvents.begin(), topLevelEvents.end(), 10212988Sgabeblack@google.com _sc_event); 10312988Sgabeblack@google.com assert(it != topLevelEvents.end()); 10412988Sgabeblack@google.com std::swap(*it, topLevelEvents.back()); 10512955Sgabeblack@google.com topLevelEvents.pop_back(); 10612955Sgabeblack@google.com } 10712955Sgabeblack@google.com 10812955Sgabeblack@google.com EventsIt it = findEvent(_name); 10912955Sgabeblack@google.com std::swap(*it, allEvents.back()); 11012955Sgabeblack@google.com allEvents.pop_back(); 11112957Sgabeblack@google.com 11213063Sgabeblack@google.com if (delayedNotify.scheduled()) 11313063Sgabeblack@google.com scheduler.deschedule(&delayedNotify); 11412955Sgabeblack@google.com} 11512955Sgabeblack@google.com 11612955Sgabeblack@google.comconst std::string & 11712955Sgabeblack@google.comEvent::name() const 11812955Sgabeblack@google.com{ 11912955Sgabeblack@google.com return _name; 12012955Sgabeblack@google.com} 12112955Sgabeblack@google.com 12212955Sgabeblack@google.comconst std::string & 12312955Sgabeblack@google.comEvent::basename() const 12412955Sgabeblack@google.com{ 12512955Sgabeblack@google.com return _basename; 12612955Sgabeblack@google.com} 12712955Sgabeblack@google.com 12812955Sgabeblack@google.combool 12912955Sgabeblack@google.comEvent::inHierarchy() const 13012955Sgabeblack@google.com{ 13113303Sgabeblack@google.com return _inHierarchy; 13212955Sgabeblack@google.com} 13312955Sgabeblack@google.com 13412955Sgabeblack@google.comsc_core::sc_object * 13512955Sgabeblack@google.comEvent::getParentObject() const 13612955Sgabeblack@google.com{ 13712955Sgabeblack@google.com return parent; 13812955Sgabeblack@google.com} 13912955Sgabeblack@google.com 14012955Sgabeblack@google.comvoid 14113208Sgabeblack@google.comEvent::notify(StaticSensitivities &senses) 14213208Sgabeblack@google.com{ 14313208Sgabeblack@google.com for (auto s: senses) 14413208Sgabeblack@google.com s->notify(this); 14513208Sgabeblack@google.com} 14613208Sgabeblack@google.com 14713208Sgabeblack@google.comvoid 14813208Sgabeblack@google.comEvent::notify(DynamicSensitivities &senses) 14913208Sgabeblack@google.com{ 15013208Sgabeblack@google.com int size = senses.size(); 15113208Sgabeblack@google.com int pos = 0; 15213208Sgabeblack@google.com while (pos < size) { 15313208Sgabeblack@google.com if (senses[pos]->notify(this)) 15413208Sgabeblack@google.com senses[pos] = senses[--size]; 15513208Sgabeblack@google.com else 15613208Sgabeblack@google.com pos++; 15713208Sgabeblack@google.com } 15813208Sgabeblack@google.com senses.resize(size); 15913208Sgabeblack@google.com} 16013208Sgabeblack@google.com 16113208Sgabeblack@google.comvoid 16212955Sgabeblack@google.comEvent::notify() 16312955Sgabeblack@google.com{ 16413317Sgabeblack@google.com if (scheduler.inUpdate()) 16513317Sgabeblack@google.com SC_REPORT_ERROR(sc_core::SC_ID_IMMEDIATE_NOTIFICATION_, ""); 16613187Sgabeblack@google.com 16713073Sgabeblack@google.com // An immediate notification overrides any pending delayed notification. 16813073Sgabeblack@google.com if (delayedNotify.scheduled()) 16913073Sgabeblack@google.com scheduler.deschedule(&delayedNotify); 17013073Sgabeblack@google.com 17113243Sgabeblack@google.com _triggeredStamp = scheduler.changeStamp(); 17213208Sgabeblack@google.com notify(staticSenseMethod); 17313208Sgabeblack@google.com notify(dynamicSenseMethod); 17413208Sgabeblack@google.com notify(staticSenseThread); 17513208Sgabeblack@google.com notify(dynamicSenseThread); 17612955Sgabeblack@google.com} 17712955Sgabeblack@google.com 17812955Sgabeblack@google.comvoid 17912955Sgabeblack@google.comEvent::notify(const sc_core::sc_time &t) 18012955Sgabeblack@google.com{ 18113063Sgabeblack@google.com if (delayedNotify.scheduled()) { 18213063Sgabeblack@google.com if (scheduler.delayed(t) >= delayedNotify.when()) 18312957Sgabeblack@google.com return; 18412957Sgabeblack@google.com 18513063Sgabeblack@google.com scheduler.deschedule(&delayedNotify); 18612957Sgabeblack@google.com } 18713063Sgabeblack@google.com scheduler.schedule(&delayedNotify, t); 18812955Sgabeblack@google.com} 18912955Sgabeblack@google.com 19012955Sgabeblack@google.comvoid 19113299Sgabeblack@google.comEvent::notifyDelayed(const sc_core::sc_time &t) 19213299Sgabeblack@google.com{ 19313317Sgabeblack@google.com if (delayedNotify.scheduled()) 19413317Sgabeblack@google.com SC_REPORT_ERROR(sc_core::SC_ID_NOTIFY_DELAYED_, ""); 19513299Sgabeblack@google.com notify(t); 19613299Sgabeblack@google.com} 19713299Sgabeblack@google.com 19813299Sgabeblack@google.comvoid 19912955Sgabeblack@google.comEvent::cancel() 20012955Sgabeblack@google.com{ 20113063Sgabeblack@google.com if (delayedNotify.scheduled()) 20213063Sgabeblack@google.com scheduler.deschedule(&delayedNotify); 20312955Sgabeblack@google.com} 20412955Sgabeblack@google.com 20512955Sgabeblack@google.combool 20612955Sgabeblack@google.comEvent::triggered() const 20712955Sgabeblack@google.com{ 20813243Sgabeblack@google.com return _triggeredStamp == scheduler.changeStamp(); 20912955Sgabeblack@google.com} 21012955Sgabeblack@google.com 21113295Sgabeblack@google.comvoid 21213295Sgabeblack@google.comEvent::clearParent() 21313295Sgabeblack@google.com{ 21413295Sgabeblack@google.com if (!parent) 21513295Sgabeblack@google.com return; 21613295Sgabeblack@google.com Object::getFromScObject(parent)->delChildEvent(sc_event()); 21713295Sgabeblack@google.com parent = nullptr; 21813295Sgabeblack@google.com topLevelEvents.emplace(topLevelEvents.end(), sc_event()); 21913295Sgabeblack@google.com} 22013295Sgabeblack@google.com 22112955Sgabeblack@google.comEvents topLevelEvents; 22212955Sgabeblack@google.comEvents allEvents; 22312955Sgabeblack@google.com 22412955Sgabeblack@google.comEventsIt 22512955Sgabeblack@google.comfindEvent(const std::string &name) 22612955Sgabeblack@google.com{ 22712955Sgabeblack@google.com EventsIt it; 22812955Sgabeblack@google.com for (it = allEvents.begin(); it != allEvents.end(); it++) 22912955Sgabeblack@google.com if (!strcmp((*it)->name(), name.c_str())) 23012955Sgabeblack@google.com break; 23112955Sgabeblack@google.com 23212955Sgabeblack@google.com return it; 23312955Sgabeblack@google.com} 23412955Sgabeblack@google.com 23512955Sgabeblack@google.com} // namespace sc_gem5 236