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Diffstat (limited to 'sim/eventq.cc')
| -rw-r--r-- | sim/eventq.cc | 259 |
1 files changed, 0 insertions, 259 deletions
diff --git a/sim/eventq.cc b/sim/eventq.cc deleted file mode 100644 index 0884db994..000000000 --- a/sim/eventq.cc +++ /dev/null @@ -1,259 +0,0 @@ -/* - * Copyright (c) 2000-2005 The Regents of The University of Michigan - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer; - * redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution; - * neither the name of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include <assert.h> - -#include <iostream> -#include <string> -#include <sstream> -#include <vector> - -#include "cpu/smt.hh" -#include "base/misc.hh" - -#include "sim/eventq.hh" -#include "base/trace.hh" -#include "sim/root.hh" - -using namespace std; - -// -// Main Event Queue -// -// Events on this queue are processed at the *beginning* of each -// cycle, before the pipeline simulation is performed. -// -EventQueue mainEventQueue("MainEventQueue"); - -void -EventQueue::insert(Event *event) -{ - if (head == NULL || event->when() < head->when() || - (event->when() == head->when() && - event->priority() <= head->priority())) { - event->next = head; - head = event; - } else { - Event *prev = head; - Event *curr = head->next; - - while (curr) { - if (event->when() <= curr->when() && - (event->when() < curr->when() || - event->priority() <= curr->priority())) - break; - - prev = curr; - curr = curr->next; - } - - event->next = curr; - prev->next = event; - } -} - -void -EventQueue::remove(Event *event) -{ - if (head == NULL) - return; - - if (head == event){ - head = event->next; - return; - } - - Event *prev = head; - Event *curr = head->next; - while (curr && curr != event) { - prev = curr; - curr = curr->next; - } - - if (curr == event) - prev->next = curr->next; -} - -void -EventQueue::serviceOne() -{ - Event *event = head; - event->clearFlags(Event::Scheduled); - head = event->next; - - // handle action - if (!event->squashed()) - event->process(); - else - event->clearFlags(Event::Squashed); - - if (event->getFlags(Event::AutoDelete) && !event->scheduled()) - delete event; -} - - -void -Event::serialize(std::ostream &os) -{ - SERIALIZE_SCALAR(_when); - SERIALIZE_SCALAR(_priority); - SERIALIZE_ENUM(_flags); -} - - -void -Event::unserialize(Checkpoint *cp, const string §ion) -{ - if (scheduled()) - deschedule(); - - UNSERIALIZE_SCALAR(_when); - UNSERIALIZE_SCALAR(_priority); - - // need to see if original event was in a scheduled, unsquashed - // state, but don't want to restore those flags in the current - // object itself (since they aren't immediately true) - UNSERIALIZE_ENUM(_flags); - bool wasScheduled = (_flags & Scheduled) && !(_flags & Squashed); - _flags &= ~(Squashed | Scheduled); - - if (wasScheduled) { - DPRINTF(Config, "rescheduling at %d\n", _when); - schedule(_when); - } -} - -void -EventQueue::serialize(ostream &os) -{ - std::list<Event *> eventPtrs; - - int numEvents = 0; - Event *event = head; - while (event) { - if (event->getFlags(Event::AutoSerialize)) { - eventPtrs.push_back(event); - paramOut(os, csprintf("event%d", numEvents++), event->name()); - } - event = event->next; - } - - SERIALIZE_SCALAR(numEvents); - - for (std::list<Event *>::iterator it=eventPtrs.begin(); - it != eventPtrs.end(); ++it) { - (*it)->nameOut(os); - (*it)->serialize(os); - } -} - -void -EventQueue::unserialize(Checkpoint *cp, const std::string §ion) -{ - int numEvents; - UNSERIALIZE_SCALAR(numEvents); - - std::string eventName; - for (int i = 0; i < numEvents; i++) { - // get the pointer value associated with the event - paramIn(cp, section, csprintf("event%d", i), eventName); - - // create the event based on its pointer value - Serializable::create(cp, eventName); - } -} - -void -EventQueue::dump() -{ - cprintf("============================================================\n"); - cprintf("EventQueue Dump (cycle %d)\n", curTick); - cprintf("------------------------------------------------------------\n"); - - if (empty()) - cprintf("<No Events>\n"); - else { - Event *event = head; - while (event) { - event->dump(); - event = event->next; - } - } - - cprintf("============================================================\n"); -} - -extern "C" -void -dumpMainQueue() -{ - mainEventQueue.dump(); -} - - -const char * -Event::description() -{ - return "generic"; -} - -#if TRACING_ON -void -Event::trace(const char *action) -{ - // This DPRINTF is unconditional because calls to this function - // are protected by an 'if (DTRACE(Event))' in the inlined Event - // methods. - // - // This is just a default implementation for derived classes where - // it's not worth doing anything special. If you want to put a - // more informative message in the trace, override this method on - // the particular subclass where you have the information that - // needs to be printed. - DPRINTFN("%s event %s @ %d\n", description(), action, when()); -} -#endif - -void -Event::dump() -{ - cprintf("Event (%s)\n", description()); - cprintf("Flags: %#x\n", _flags); -#if TRACING_ON - cprintf("Created: %d\n", when_created); -#endif - if (scheduled()) { -#if TRACING_ON - cprintf("Scheduled at %d\n", when_scheduled); -#endif - cprintf("Scheduled for %d, priority %d\n", when(), _priority); - } - else { - cprintf("Not Scheduled\n"); - } -} |