188 lines
4.8 KiB
C++
188 lines
4.8 KiB
C++
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/*
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* Copyright (c) 2010 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Korey Sewell
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*
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*/
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#include "cpu/inorder/resource_sked.hh"
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#include "cpu/inorder/pipeline_traits.hh"
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#include <vector>
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#include <list>
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#include <stdio.h>
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using namespace std;
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using namespace ThePipeline;
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ResourceSked::ResourceSked()
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{
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sked.resize(NumStages);
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}
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void
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ResourceSked::init()
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{
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assert(!sked[0].empty());
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curSkedEntry = sked[0].begin();
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}
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int
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ResourceSked::size()
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{
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int total = 0;
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for (int i = 0; i < sked.size(); i++) {
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total += sked[i].size();
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}
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return total;
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}
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bool
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ResourceSked::empty()
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{
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return size() == 0;
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}
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ScheduleEntry*
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ResourceSked::top()
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{
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assert(size() > 0);
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return *curSkedEntry;
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}
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void
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ResourceSked::pop()
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{
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int stage_num = (*curSkedEntry)->stageNum;
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sked[stage_num].erase(curSkedEntry);
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if (!sked[stage_num].empty()) {
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curSkedEntry = sked[stage_num].begin();
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} else {
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int next_stage = stage_num + 1;
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while (next_stage < NumStages) {
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if (sked[next_stage].empty()) {
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next_stage++;
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} else {
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curSkedEntry = sked[next_stage].begin();
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break;
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}
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}
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}
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}
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void
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ResourceSked::push(ScheduleEntry* sked_entry)
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{
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int stage_num = sked_entry->stageNum;
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assert(stage_num < NumStages);
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SkedIt pri_iter = findIterByPriority(sked_entry, stage_num);
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sked[stage_num].insert(pri_iter, sked_entry);
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}
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void
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ResourceSked::pushBefore(ScheduleEntry* sked_entry, int sked_cmd,
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int sked_cmd_idx)
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{
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int stage_num = sked_entry->stageNum;
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assert(stage_num < NumStages);
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SkedIt pri_iter = findIterByCommand(sked_entry, stage_num,
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sked_cmd, sked_cmd_idx);
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assert(pri_iter != sked[stage_num].end() &&
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"Could not find command to insert in front of.");
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sked[stage_num].insert(pri_iter, sked_entry);
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}
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ResourceSked::SkedIt
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ResourceSked::findIterByPriority(ScheduleEntry* sked_entry, int stage_num)
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{
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if (sked[stage_num].empty()) {
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return sked[stage_num].end();
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}
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int priority = sked_entry->priority;
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SkedIt sked_it = sked[stage_num].begin();
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SkedIt sked_end = sked[stage_num].end();
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while (sked_it != sked_end) {
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if ((*sked_it)->priority > priority)
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break;
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sked_it++;
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}
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return sked_it;
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}
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ResourceSked::SkedIt
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ResourceSked::findIterByCommand(ScheduleEntry* sked_entry, int stage_num,
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int sked_cmd, int sked_cmd_idx)
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{
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if (sked[stage_num].empty()) {
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return sked[stage_num].end();
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}
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SkedIt sked_it = sked[stage_num].begin();
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SkedIt sked_end = sked[stage_num].end();
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while (sked_it != sked_end) {
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if ((*sked_it)->cmd == sked_cmd &&
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(sked_cmd_idx != -1) ? (*sked_it)->idx == sked_cmd_idx : true)
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break;
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sked_it++;
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}
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return sked_it;
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}
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void
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ResourceSked::print()
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{
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for (int i = 0; i < sked.size(); i++) {
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cprintf("Stage %i\n====\n", i);
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SkedIt sked_it = sked[i].begin();
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SkedIt sked_end = sked[i].end();
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while (sked_it != sked_end) {
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cprintf("\t res:%i cmd:%i idx:%i\n", (*sked_it)->resNum, (*sked_it)->cmd, (*sked_it)->idx);
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sked_it++;
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}
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}
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}
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