1/* 2 * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood 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; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29#include <cassert> 30 31#include "base/cprintf.hh" 32#include "base/misc.hh" 33#include "base/random.hh" 34#include "base/stl_helpers.hh" 35#include "debug/RubyQueue.hh" 36#include "mem/ruby/network/MessageBuffer.hh" 37#include "mem/ruby/system/System.hh" 38 39using namespace std; 40using m5::stl_helpers::operator<<; 41 42MessageBuffer::MessageBuffer(const Params *p) 43 : SimObject(p), m_recycle_latency(p->recycle_latency), 44 m_max_size(p->buffer_size), m_time_last_time_size_checked(0), 45 m_time_last_time_enqueue(0), m_time_last_time_pop(0), 46 m_last_arrival_time(0), m_strict_fifo(p->ordered), 47 m_randomization(p->randomization) 48{ 49 m_msg_counter = 0; 50 m_consumer = NULL; 51 m_sender = NULL; 52 m_receiver = NULL; 53 54 m_size_last_time_size_checked = 0; 55 m_size_at_cycle_start = 0; 56 m_msgs_this_cycle = 0; 57 m_not_avail_count = 0; 58 m_priority_rank = 0; 59 60 m_stall_msg_map.clear(); 61 m_input_link_id = 0; 62 m_vnet_id = 0; 63} 64 65unsigned int 66MessageBuffer::getSize() 67{ 68 if (m_time_last_time_size_checked != m_receiver->curCycle()) { 69 m_time_last_time_size_checked = m_receiver->curCycle(); 70 m_size_last_time_size_checked = m_prio_heap.size(); 71 } 72 73 return m_size_last_time_size_checked; 74} 75 76bool 77MessageBuffer::areNSlotsAvailable(unsigned int n) 78{ 79 80 // fast path when message buffers have infinite size 81 if (m_max_size == 0) { 82 return true; 83 } 84 85 // determine the correct size for the current cycle 86 // pop operations shouldn't effect the network's visible size 87 // until schd cycle, but enqueue operations effect the visible 88 // size immediately 89 unsigned int current_size = 0; 90 91 if (m_time_last_time_pop < m_sender->clockEdge()) { 92 // no pops this cycle - heap size is correct 93 current_size = m_prio_heap.size(); 94 } else { 95 if (m_time_last_time_enqueue < m_sender->curCycle()) { 96 // no enqueues this cycle - m_size_at_cycle_start is correct 97 current_size = m_size_at_cycle_start; 98 } else { 99 // both pops and enqueues occured this cycle - add new 100 // enqueued msgs to m_size_at_cycle_start 101 current_size = m_size_at_cycle_start + m_msgs_this_cycle; 102 } 103 } 104 105 // now compare the new size with our max size 106 if (current_size + n <= m_max_size) { 107 return true; 108 } else { 109 DPRINTF(RubyQueue, "n: %d, current_size: %d, heap size: %d, " 110 "m_max_size: %d\n", 111 n, current_size, m_prio_heap.size(), m_max_size); 112 m_not_avail_count++; 113 return false; 114 } 115} 116 117const Message* 118MessageBuffer::peek() const 119{ 120 DPRINTF(RubyQueue, "Peeking at head of queue.\n"); 121 assert(isReady()); 122 123 const Message* msg_ptr = m_prio_heap.front().get(); 124 assert(msg_ptr); 125 126 DPRINTF(RubyQueue, "Message: %s\n", (*msg_ptr)); 127 return msg_ptr; 128} 129 130// FIXME - move me somewhere else 131Cycles 132random_time() 133{ 134 Cycles time(1); 135 time += Cycles(random_mt.random(0, 3)); // [0...3] 136 if (random_mt.random(0, 7) == 0) { // 1 in 8 chance 137 time += Cycles(100 + random_mt.random(1, 15)); // 100 + [1...15] 138 } 139 return time; 140} 141 142void 143MessageBuffer::enqueue(MsgPtr message, Cycles delta) 144{ 145 // record current time incase we have a pop that also adjusts my size 146 if (m_time_last_time_enqueue < m_sender->curCycle()) { 147 m_msgs_this_cycle = 0; // first msg this cycle 148 m_time_last_time_enqueue = m_sender->curCycle(); 149 } 150 151 m_msg_counter++; 152 m_msgs_this_cycle++; 153 154 // Calculate the arrival time of the message, that is, the first 155 // cycle the message can be dequeued. 156 assert(delta > 0); 157 Tick current_time = m_sender->clockEdge(); 158 Tick arrival_time = 0; 159 160 if (!RubySystem::getRandomization() || !m_randomization) { 161 // No randomization 162 arrival_time = current_time + delta * m_sender->clockPeriod(); 163 } else { 164 // Randomization - ignore delta 165 if (m_strict_fifo) { 166 if (m_last_arrival_time < current_time) { 167 m_last_arrival_time = current_time; 168 } 169 arrival_time = m_last_arrival_time + 170 random_time() * m_sender->clockPeriod(); 171 } else { 172 arrival_time = current_time + 173 random_time() * m_sender->clockPeriod(); 174 } 175 } 176 177 // Check the arrival time 178 assert(arrival_time > current_time); 179 if (m_strict_fifo) { 180 if (arrival_time < m_last_arrival_time) { 181 panic("FIFO ordering violated: %s name: %s current time: %d " 182 "delta: %d arrival_time: %d last arrival_time: %d\n", 183 *this, name(), current_time, 184 delta * m_sender->clockPeriod(), 185 arrival_time, m_last_arrival_time); 186 } 187 } 188 189 // If running a cache trace, don't worry about the last arrival checks 190 if (!RubySystem::getWarmupEnabled()) { 191 m_last_arrival_time = arrival_time; 192 } 193 194 // compute the delay cycles and set enqueue time 195 Message* msg_ptr = message.get(); 196 assert(msg_ptr != NULL); 197 198 assert(m_sender->clockEdge() >= msg_ptr->getLastEnqueueTime() && 199 "ensure we aren't dequeued early"); 200 201 msg_ptr->updateDelayedTicks(m_sender->clockEdge()); 202 msg_ptr->setLastEnqueueTime(arrival_time); 203 msg_ptr->setMsgCounter(m_msg_counter); 204 205 // Insert the message into the priority heap 206 m_prio_heap.push_back(message); 207 push_heap(m_prio_heap.begin(), m_prio_heap.end(), greater<MsgPtr>()); 208 209 DPRINTF(RubyQueue, "Enqueue arrival_time: %lld, Message: %s\n", 210 arrival_time, *(message.get())); 211 212 // Schedule the wakeup 213 assert(m_consumer != NULL); 214 m_consumer->scheduleEventAbsolute(arrival_time); 215 m_consumer->storeEventInfo(m_vnet_id); 216} 217 218Cycles 219MessageBuffer::dequeue() 220{ 221 DPRINTF(RubyQueue, "Popping\n"); 222 assert(isReady()); 223 224 // get MsgPtr of the message about to be dequeued 225 MsgPtr message = m_prio_heap.front(); 226 227 // get the delay cycles 228 message->updateDelayedTicks(m_receiver->clockEdge()); 229 Cycles delayCycles = 230 m_receiver->ticksToCycles(message->getDelayedTicks()); 231 232 // record previous size and time so the current buffer size isn't 233 // adjusted until schd cycle 234 if (m_time_last_time_pop < m_receiver->clockEdge()) { 235 m_size_at_cycle_start = m_prio_heap.size(); 236 m_time_last_time_pop = m_receiver->clockEdge(); 237 } 238 239 pop_heap(m_prio_heap.begin(), m_prio_heap.end(), 240 greater<MsgPtr>()); 241 m_prio_heap.pop_back(); 242 243 return delayCycles; 244} 245 246void 247MessageBuffer::clear() 248{ 249 m_prio_heap.clear(); 250 251 m_msg_counter = 0; 252 m_time_last_time_enqueue = Cycles(0); 253 m_time_last_time_pop = 0; 254 m_size_at_cycle_start = 0; 255 m_msgs_this_cycle = 0; 256} 257 258void 259MessageBuffer::recycle() 260{ 261 DPRINTF(RubyQueue, "Recycling.\n"); 262 assert(isReady()); 263 MsgPtr node = m_prio_heap.front(); 264 pop_heap(m_prio_heap.begin(), m_prio_heap.end(), greater<MsgPtr>()); 265 266 node->setLastEnqueueTime(m_receiver->clockEdge(m_recycle_latency)); 267 m_prio_heap.back() = node; 268 push_heap(m_prio_heap.begin(), m_prio_heap.end(), greater<MsgPtr>()); 269 m_consumer-> 270 scheduleEventAbsolute(m_receiver->clockEdge(m_recycle_latency)); 271} 272 273void 274MessageBuffer::reanalyzeList(list<MsgPtr> <, Tick schdTick) 275{ 276 while(!lt.empty()) { 277 m_msg_counter++; 278 MsgPtr m = lt.front(); 279 m->setLastEnqueueTime(schdTick); 280 m->setMsgCounter(m_msg_counter); 281 282 m_prio_heap.push_back(m); 283 push_heap(m_prio_heap.begin(), m_prio_heap.end(), 284 greater<MsgPtr>()); 285 286 m_consumer->scheduleEventAbsolute(schdTick); 287 lt.pop_front(); 288 } 289} 290 291void 292MessageBuffer::reanalyzeMessages(Addr addr) 293{ 294 DPRINTF(RubyQueue, "ReanalyzeMessages %s\n", addr); 295 assert(m_stall_msg_map.count(addr) > 0); 296 Tick curTick = m_receiver->clockEdge(); 297 298 // 299 // Put all stalled messages associated with this address back on the 300 // prio heap. The reanalyzeList call will make sure the consumer is 301 // scheduled for the current cycle so that the previously stalled messages 302 // will be observed before any younger messages that may arrive this cycle 303 // 304 reanalyzeList(m_stall_msg_map[addr], curTick); 305 m_stall_msg_map.erase(addr); 306} 307 308void 309MessageBuffer::reanalyzeAllMessages() 310{ 311 DPRINTF(RubyQueue, "ReanalyzeAllMessages\n"); 312 Tick curTick = m_receiver->clockEdge(); 313 314 // 315 // Put all stalled messages associated with this address back on the 316 // prio heap. The reanalyzeList call will make sure the consumer is 317 // scheduled for the current cycle so that the previously stalled messages 318 // will be observed before any younger messages that may arrive this cycle. 319 // 320 for (StallMsgMapType::iterator map_iter = m_stall_msg_map.begin(); 321 map_iter != m_stall_msg_map.end(); ++map_iter) { 322 reanalyzeList(map_iter->second, curTick); 323 } 324 m_stall_msg_map.clear(); 325} 326 327void 328MessageBuffer::stallMessage(Addr addr) 329{ 330 DPRINTF(RubyQueue, "Stalling due to %s\n", addr); 331 assert(isReady()); 332 assert(getOffset(addr) == 0); 333 MsgPtr message = m_prio_heap.front(); 334 335 dequeue(); 336 337 // 338 // Note: no event is scheduled to analyze the map at a later time. 339 // Instead the controller is responsible to call reanalyzeMessages when 340 // these addresses change state. 341 // 342 (m_stall_msg_map[addr]).push_back(message); 343} 344 345void 346MessageBuffer::print(ostream& out) const 347{ 348 ccprintf(out, "[MessageBuffer: "); 349 if (m_consumer != NULL) { 350 ccprintf(out, " consumer-yes "); 351 } 352 353 vector<MsgPtr> copy(m_prio_heap); 354 sort_heap(copy.begin(), copy.end(), greater<MsgPtr>()); 355 ccprintf(out, "%s] %s", copy, name()); 356} 357 358bool 359MessageBuffer::isReady() const 360{ 361 return ((m_prio_heap.size() > 0) && 362 (m_prio_heap.front()->getLastEnqueueTime() <= m_receiver->clockEdge())); 363} 364
| 1/* 2 * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood 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; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29#include <cassert> 30 31#include "base/cprintf.hh" 32#include "base/misc.hh" 33#include "base/random.hh" 34#include "base/stl_helpers.hh" 35#include "debug/RubyQueue.hh" 36#include "mem/ruby/network/MessageBuffer.hh" 37#include "mem/ruby/system/System.hh" 38 39using namespace std; 40using m5::stl_helpers::operator<<; 41 42MessageBuffer::MessageBuffer(const Params *p) 43 : SimObject(p), m_recycle_latency(p->recycle_latency), 44 m_max_size(p->buffer_size), m_time_last_time_size_checked(0), 45 m_time_last_time_enqueue(0), m_time_last_time_pop(0), 46 m_last_arrival_time(0), m_strict_fifo(p->ordered), 47 m_randomization(p->randomization) 48{ 49 m_msg_counter = 0; 50 m_consumer = NULL; 51 m_sender = NULL; 52 m_receiver = NULL; 53 54 m_size_last_time_size_checked = 0; 55 m_size_at_cycle_start = 0; 56 m_msgs_this_cycle = 0; 57 m_not_avail_count = 0; 58 m_priority_rank = 0; 59 60 m_stall_msg_map.clear(); 61 m_input_link_id = 0; 62 m_vnet_id = 0; 63} 64 65unsigned int 66MessageBuffer::getSize() 67{ 68 if (m_time_last_time_size_checked != m_receiver->curCycle()) { 69 m_time_last_time_size_checked = m_receiver->curCycle(); 70 m_size_last_time_size_checked = m_prio_heap.size(); 71 } 72 73 return m_size_last_time_size_checked; 74} 75 76bool 77MessageBuffer::areNSlotsAvailable(unsigned int n) 78{ 79 80 // fast path when message buffers have infinite size 81 if (m_max_size == 0) { 82 return true; 83 } 84 85 // determine the correct size for the current cycle 86 // pop operations shouldn't effect the network's visible size 87 // until schd cycle, but enqueue operations effect the visible 88 // size immediately 89 unsigned int current_size = 0; 90 91 if (m_time_last_time_pop < m_sender->clockEdge()) { 92 // no pops this cycle - heap size is correct 93 current_size = m_prio_heap.size(); 94 } else { 95 if (m_time_last_time_enqueue < m_sender->curCycle()) { 96 // no enqueues this cycle - m_size_at_cycle_start is correct 97 current_size = m_size_at_cycle_start; 98 } else { 99 // both pops and enqueues occured this cycle - add new 100 // enqueued msgs to m_size_at_cycle_start 101 current_size = m_size_at_cycle_start + m_msgs_this_cycle; 102 } 103 } 104 105 // now compare the new size with our max size 106 if (current_size + n <= m_max_size) { 107 return true; 108 } else { 109 DPRINTF(RubyQueue, "n: %d, current_size: %d, heap size: %d, " 110 "m_max_size: %d\n", 111 n, current_size, m_prio_heap.size(), m_max_size); 112 m_not_avail_count++; 113 return false; 114 } 115} 116 117const Message* 118MessageBuffer::peek() const 119{ 120 DPRINTF(RubyQueue, "Peeking at head of queue.\n"); 121 assert(isReady()); 122 123 const Message* msg_ptr = m_prio_heap.front().get(); 124 assert(msg_ptr); 125 126 DPRINTF(RubyQueue, "Message: %s\n", (*msg_ptr)); 127 return msg_ptr; 128} 129 130// FIXME - move me somewhere else 131Cycles 132random_time() 133{ 134 Cycles time(1); 135 time += Cycles(random_mt.random(0, 3)); // [0...3] 136 if (random_mt.random(0, 7) == 0) { // 1 in 8 chance 137 time += Cycles(100 + random_mt.random(1, 15)); // 100 + [1...15] 138 } 139 return time; 140} 141 142void 143MessageBuffer::enqueue(MsgPtr message, Cycles delta) 144{ 145 // record current time incase we have a pop that also adjusts my size 146 if (m_time_last_time_enqueue < m_sender->curCycle()) { 147 m_msgs_this_cycle = 0; // first msg this cycle 148 m_time_last_time_enqueue = m_sender->curCycle(); 149 } 150 151 m_msg_counter++; 152 m_msgs_this_cycle++; 153 154 // Calculate the arrival time of the message, that is, the first 155 // cycle the message can be dequeued. 156 assert(delta > 0); 157 Tick current_time = m_sender->clockEdge(); 158 Tick arrival_time = 0; 159 160 if (!RubySystem::getRandomization() || !m_randomization) { 161 // No randomization 162 arrival_time = current_time + delta * m_sender->clockPeriod(); 163 } else { 164 // Randomization - ignore delta 165 if (m_strict_fifo) { 166 if (m_last_arrival_time < current_time) { 167 m_last_arrival_time = current_time; 168 } 169 arrival_time = m_last_arrival_time + 170 random_time() * m_sender->clockPeriod(); 171 } else { 172 arrival_time = current_time + 173 random_time() * m_sender->clockPeriod(); 174 } 175 } 176 177 // Check the arrival time 178 assert(arrival_time > current_time); 179 if (m_strict_fifo) { 180 if (arrival_time < m_last_arrival_time) { 181 panic("FIFO ordering violated: %s name: %s current time: %d " 182 "delta: %d arrival_time: %d last arrival_time: %d\n", 183 *this, name(), current_time, 184 delta * m_sender->clockPeriod(), 185 arrival_time, m_last_arrival_time); 186 } 187 } 188 189 // If running a cache trace, don't worry about the last arrival checks 190 if (!RubySystem::getWarmupEnabled()) { 191 m_last_arrival_time = arrival_time; 192 } 193 194 // compute the delay cycles and set enqueue time 195 Message* msg_ptr = message.get(); 196 assert(msg_ptr != NULL); 197 198 assert(m_sender->clockEdge() >= msg_ptr->getLastEnqueueTime() && 199 "ensure we aren't dequeued early"); 200 201 msg_ptr->updateDelayedTicks(m_sender->clockEdge()); 202 msg_ptr->setLastEnqueueTime(arrival_time); 203 msg_ptr->setMsgCounter(m_msg_counter); 204 205 // Insert the message into the priority heap 206 m_prio_heap.push_back(message); 207 push_heap(m_prio_heap.begin(), m_prio_heap.end(), greater<MsgPtr>()); 208 209 DPRINTF(RubyQueue, "Enqueue arrival_time: %lld, Message: %s\n", 210 arrival_time, *(message.get())); 211 212 // Schedule the wakeup 213 assert(m_consumer != NULL); 214 m_consumer->scheduleEventAbsolute(arrival_time); 215 m_consumer->storeEventInfo(m_vnet_id); 216} 217 218Cycles 219MessageBuffer::dequeue() 220{ 221 DPRINTF(RubyQueue, "Popping\n"); 222 assert(isReady()); 223 224 // get MsgPtr of the message about to be dequeued 225 MsgPtr message = m_prio_heap.front(); 226 227 // get the delay cycles 228 message->updateDelayedTicks(m_receiver->clockEdge()); 229 Cycles delayCycles = 230 m_receiver->ticksToCycles(message->getDelayedTicks()); 231 232 // record previous size and time so the current buffer size isn't 233 // adjusted until schd cycle 234 if (m_time_last_time_pop < m_receiver->clockEdge()) { 235 m_size_at_cycle_start = m_prio_heap.size(); 236 m_time_last_time_pop = m_receiver->clockEdge(); 237 } 238 239 pop_heap(m_prio_heap.begin(), m_prio_heap.end(), 240 greater<MsgPtr>()); 241 m_prio_heap.pop_back(); 242 243 return delayCycles; 244} 245 246void 247MessageBuffer::clear() 248{ 249 m_prio_heap.clear(); 250 251 m_msg_counter = 0; 252 m_time_last_time_enqueue = Cycles(0); 253 m_time_last_time_pop = 0; 254 m_size_at_cycle_start = 0; 255 m_msgs_this_cycle = 0; 256} 257 258void 259MessageBuffer::recycle() 260{ 261 DPRINTF(RubyQueue, "Recycling.\n"); 262 assert(isReady()); 263 MsgPtr node = m_prio_heap.front(); 264 pop_heap(m_prio_heap.begin(), m_prio_heap.end(), greater<MsgPtr>()); 265 266 node->setLastEnqueueTime(m_receiver->clockEdge(m_recycle_latency)); 267 m_prio_heap.back() = node; 268 push_heap(m_prio_heap.begin(), m_prio_heap.end(), greater<MsgPtr>()); 269 m_consumer-> 270 scheduleEventAbsolute(m_receiver->clockEdge(m_recycle_latency)); 271} 272 273void 274MessageBuffer::reanalyzeList(list<MsgPtr> <, Tick schdTick) 275{ 276 while(!lt.empty()) { 277 m_msg_counter++; 278 MsgPtr m = lt.front(); 279 m->setLastEnqueueTime(schdTick); 280 m->setMsgCounter(m_msg_counter); 281 282 m_prio_heap.push_back(m); 283 push_heap(m_prio_heap.begin(), m_prio_heap.end(), 284 greater<MsgPtr>()); 285 286 m_consumer->scheduleEventAbsolute(schdTick); 287 lt.pop_front(); 288 } 289} 290 291void 292MessageBuffer::reanalyzeMessages(Addr addr) 293{ 294 DPRINTF(RubyQueue, "ReanalyzeMessages %s\n", addr); 295 assert(m_stall_msg_map.count(addr) > 0); 296 Tick curTick = m_receiver->clockEdge(); 297 298 // 299 // Put all stalled messages associated with this address back on the 300 // prio heap. The reanalyzeList call will make sure the consumer is 301 // scheduled for the current cycle so that the previously stalled messages 302 // will be observed before any younger messages that may arrive this cycle 303 // 304 reanalyzeList(m_stall_msg_map[addr], curTick); 305 m_stall_msg_map.erase(addr); 306} 307 308void 309MessageBuffer::reanalyzeAllMessages() 310{ 311 DPRINTF(RubyQueue, "ReanalyzeAllMessages\n"); 312 Tick curTick = m_receiver->clockEdge(); 313 314 // 315 // Put all stalled messages associated with this address back on the 316 // prio heap. The reanalyzeList call will make sure the consumer is 317 // scheduled for the current cycle so that the previously stalled messages 318 // will be observed before any younger messages that may arrive this cycle. 319 // 320 for (StallMsgMapType::iterator map_iter = m_stall_msg_map.begin(); 321 map_iter != m_stall_msg_map.end(); ++map_iter) { 322 reanalyzeList(map_iter->second, curTick); 323 } 324 m_stall_msg_map.clear(); 325} 326 327void 328MessageBuffer::stallMessage(Addr addr) 329{ 330 DPRINTF(RubyQueue, "Stalling due to %s\n", addr); 331 assert(isReady()); 332 assert(getOffset(addr) == 0); 333 MsgPtr message = m_prio_heap.front(); 334 335 dequeue(); 336 337 // 338 // Note: no event is scheduled to analyze the map at a later time. 339 // Instead the controller is responsible to call reanalyzeMessages when 340 // these addresses change state. 341 // 342 (m_stall_msg_map[addr]).push_back(message); 343} 344 345void 346MessageBuffer::print(ostream& out) const 347{ 348 ccprintf(out, "[MessageBuffer: "); 349 if (m_consumer != NULL) { 350 ccprintf(out, " consumer-yes "); 351 } 352 353 vector<MsgPtr> copy(m_prio_heap); 354 sort_heap(copy.begin(), copy.end(), greater<MsgPtr>()); 355 ccprintf(out, "%s] %s", copy, name()); 356} 357 358bool 359MessageBuffer::isReady() const 360{ 361 return ((m_prio_heap.size() > 0) && 362 (m_prio_heap.front()->getLastEnqueueTime() <= m_receiver->clockEdge())); 363} 364
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