rob_impl.hh (2877:4b56debc25d1) rob_impl.hh (2980:eab855f06b79)
1/*
2 * Copyright (c) 2004-2006 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;

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27 *
28 * Authors: Kevin Lim
29 * Korey Sewell
30 */
31
32#include "config/full_system.hh"
33#include "cpu/o3/rob.hh"
34
1/*
2 * Copyright (c) 2004-2006 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;

--- 18 unchanged lines hidden (view full) ---

27 *
28 * Authors: Kevin Lim
29 * Korey Sewell
30 */
31
32#include "config/full_system.hh"
33#include "cpu/o3/rob.hh"
34
35using namespace std;
35#include <list>
36
37template <class Impl>
38ROB<Impl>::ROB(unsigned _numEntries, unsigned _squashWidth,
36
37template <class Impl>
38ROB<Impl>::ROB(unsigned _numEntries, unsigned _squashWidth,
39 string _smtROBPolicy, unsigned _smtROBThreshold,
39 std::string _smtROBPolicy, unsigned _smtROBThreshold,
40 unsigned _numThreads)
41 : numEntries(_numEntries),
42 squashWidth(_squashWidth),
43 numInstsInROB(0),
44 numThreads(_numThreads)
45{
46 for (int tid=0; tid < numThreads; tid++) {
47 squashedSeqNum[tid] = 0;
48 doneSquashing[tid] = true;
49 threadEntries[tid] = 0;
50 }
51
40 unsigned _numThreads)
41 : numEntries(_numEntries),
42 squashWidth(_squashWidth),
43 numInstsInROB(0),
44 numThreads(_numThreads)
45{
46 for (int tid=0; tid < numThreads; tid++) {
47 squashedSeqNum[tid] = 0;
48 doneSquashing[tid] = true;
49 threadEntries[tid] = 0;
50 }
51
52 string policy = _smtROBPolicy;
52 std::string policy = _smtROBPolicy;
53
54 //Convert string to lowercase
55 std::transform(policy.begin(), policy.end(), policy.begin(),
56 (int(*)(int)) tolower);
57
58 //Figure out rob policy
59 if (policy == "dynamic") {
60 robPolicy = Dynamic;

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113 // Initialize the "universal" ROB head & tail point to invalid
114 // pointers
115 head = instList[0].end();
116 tail = instList[0].end();
117}
118
119template <class Impl>
120void
53
54 //Convert string to lowercase
55 std::transform(policy.begin(), policy.end(), policy.begin(),
56 (int(*)(int)) tolower);
57
58 //Figure out rob policy
59 if (policy == "dynamic") {
60 robPolicy = Dynamic;

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113 // Initialize the "universal" ROB head & tail point to invalid
114 // pointers
115 head = instList[0].end();
116 tail = instList[0].end();
117}
118
119template <class Impl>
120void
121ROB::setActiveThreads(list *at_ptr)
121ROB<Impl>::setActiveThreads(std::list<unsigned> *at_ptr)
122{
123 DPRINTF(ROB, "Setting active threads list pointer.\n");
124 activeThreads = at_ptr;
125}
126
127template <class Impl>
128void
129ROB<Impl>::switchOut()

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152
153template <class Impl>
154void
155ROB<Impl>::resetEntries()
156{
157 if (robPolicy != Dynamic || numThreads > 1) {
158 int active_threads = (*activeThreads).size();
159
122{
123 DPRINTF(ROB, "Setting active threads list pointer.\n");
124 activeThreads = at_ptr;
125}
126
127template <class Impl>
128void
129ROB<Impl>::switchOut()

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152
153template <class Impl>
154void
155ROB<Impl>::resetEntries()
156{
157 if (robPolicy != Dynamic || numThreads > 1) {
158 int active_threads = (*activeThreads).size();
159
160 list::iterator threads = (*activeThreads).begin();
161 list::iterator list_end = (*activeThreads).end();
160 std::list<unsigned>::iterator threads = (*activeThreads).begin();
161 std::list<unsigned>::iterator list_end = (*activeThreads).end();
162
163 while (threads != list_end) {
164 if (robPolicy == Partitioned) {
165 maxEntries[*threads++] = numEntries / active_threads;
166 } else if (robPolicy == Threshold && active_threads == 1) {
167 maxEntries[*threads++] = numEntries;
168 }
169 }

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313 return false;
314}
315
316template <class Impl>
317bool
318ROB<Impl>::canCommit()
319{
320 //@todo: set ActiveThreads through ROB or CPU
162
163 while (threads != list_end) {
164 if (robPolicy == Partitioned) {
165 maxEntries[*threads++] = numEntries / active_threads;
166 } else if (robPolicy == Threshold && active_threads == 1) {
167 maxEntries[*threads++] = numEntries;
168 }
169 }

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313 return false;
314}
315
316template <class Impl>
317bool
318ROB<Impl>::canCommit()
319{
320 //@todo: set ActiveThreads through ROB or CPU
321 list::iterator threads = (*activeThreads).begin();
321 std::list<unsigned>::iterator threads = (*activeThreads).begin();
322
323 while (threads != (*activeThreads).end()) {
324 unsigned tid = *threads++;
325
326 if (isHeadReady(tid)) {
327 return true;
328 }
329 }

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427void
428ROB<Impl>::updateHead()
429{
430 DynInstPtr head_inst;
431 InstSeqNum lowest_num = 0;
432 bool first_valid = true;
433
434 // @todo: set ActiveThreads through ROB or CPU
322
323 while (threads != (*activeThreads).end()) {
324 unsigned tid = *threads++;
325
326 if (isHeadReady(tid)) {
327 return true;
328 }
329 }

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427void
428ROB<Impl>::updateHead()
429{
430 DynInstPtr head_inst;
431 InstSeqNum lowest_num = 0;
432 bool first_valid = true;
433
434 // @todo: set ActiveThreads through ROB or CPU
435 list::iterator threads = (*activeThreads).begin();
435 std::list<unsigned>::iterator threads = (*activeThreads).begin();
436
437 while (threads != (*activeThreads).end()) {
438 unsigned thread_num = *threads++;
439
440 if (instList[thread_num].empty())
441 continue;
442
443 if (first_valid) {

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467
468template <class Impl>
469void
470ROB<Impl>::updateTail()
471{
472 tail = instList[0].end();
473 bool first_valid = true;
474
436
437 while (threads != (*activeThreads).end()) {
438 unsigned thread_num = *threads++;
439
440 if (instList[thread_num].empty())
441 continue;
442
443 if (first_valid) {

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467
468template <class Impl>
469void
470ROB<Impl>::updateTail()
471{
472 tail = instList[0].end();
473 bool first_valid = true;
474
475 list::iterator threads = (*activeThreads).begin();
475 std::list<unsigned>::iterator threads = (*activeThreads).begin();
476
477 while (threads != (*activeThreads).end()) {
478 unsigned tid = *threads++;
479
480 if (instList[tid].empty()) {
481 continue;
482 }
483

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477 while (threads != (*activeThreads).end()) {
478 unsigned tid = *threads++;
479
480 if (instList[tid].empty()) {
481 continue;
482 }
483

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