3 * Copyright (c) 2016 Google Inc.
4 * Copyright (c) 2017, Centre National de la Recherche Scientifique
5 * All rights reserved.
6 *
7 * The license below extends only to copyright in the software and shall
8 * not be construed as granting a license to any other intellectual
9 * property including but not limited to intellectual property relating
10 * to a hardware implementation of the functionality of the software
11 * licensed hereunder. You may use the software subject to the license
12 * terms below provided that you ensure that this notice is replicated
13 * unmodified and in its entirety in all distributions of the software,
14 * modified or unmodified, in source code or in binary form.
15 *
16 * Redistribution and use in source and binary forms, with or without
17 * modification, are permitted provided that the following conditions are
18 * met: redistributions of source code must retain the above copyright
19 * notice, this list of conditions and the following disclaimer;
20 * redistributions in binary form must reproduce the above copyright
21 * notice, this list of conditions and the following disclaimer in the
22 * documentation and/or other materials provided with the distribution;
23 * neither the name of the copyright holders nor the names of its
24 * contributors may be used to endorse or promote products derived from
25 * this software without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
28 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
29 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
30 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
31 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
32 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
33 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
34 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
35 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
36 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
37 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
38 *
39 * Authors: Thomas Grass
40 * Andreas Hansson
41 * Rahul Thakur
42 * Pierre-Yves Peneau
43 */
44
45#ifndef __MEM_COMM_MONITOR_HH__
46#define __MEM_COMM_MONITOR_HH__
47
48#include "base/statistics.hh"
49#include "mem/mem_object.hh"
50#include "params/CommMonitor.hh"
51#include "sim/probe/mem.hh"
52
53/**
54 * The communication monitor is a MemObject which can monitor statistics of
55 * the communication happening between two ports in the memory system.
56 *
57 * Currently the following stats are implemented: Histograms of read/write
58 * transactions, read/write burst lengths, read/write bandwidth,
59 * outstanding read/write requests, read latency and inter transaction time
60 * (read-read, write-write, read/write-read/write). Furthermore it allows
61 * to capture the number of accesses to an address over time ("heat map").
62 * All stats can be disabled from Python.
63 */
64class CommMonitor : public MemObject
65{
66
67 public: // Construction & SimObject interfaces
68
69 /** Parameters of communication monitor */
70 typedef CommMonitorParams Params;
71 const Params* params() const
72 { return reinterpret_cast<const Params*>(_params); }
73
74 /**
75 * Constructor based on the Python params
76 *
77 * @param params Python parameters
78 */
79 CommMonitor(Params* params);
80
81 void init() override;
82 void regStats() override;
83 void startup() override;
84 void regProbePoints() override;
85
86 public: // MemObject interfaces
87 BaseMasterPort& getMasterPort(const std::string& if_name,
88 PortID idx = InvalidPortID) override;
89
90 BaseSlavePort& getSlavePort(const std::string& if_name,
91 PortID idx = InvalidPortID) override;
92
93 private:
94
95 /**
96 * Sender state class for the monitor so that we can annotate
97 * packets with a transmit time and receive time.
98 */
99 class CommMonitorSenderState : public Packet::SenderState
100 {
101
102 public:
103
104 /**
105 * Construct a new sender state and store the time so we can
106 * calculate round-trip latency.
107 *
108 * @param _transmitTime Time of packet transmission
109 */
110 CommMonitorSenderState(Tick _transmitTime)
111 : transmitTime(_transmitTime)
112 { }
113
114 /** Destructor */
115 ~CommMonitorSenderState() { }
116
117 /** Tick when request is transmitted */
118 Tick transmitTime;
119
120 };
121
122 /**
123 * This is the master port of the communication monitor. All recv
124 * functions call a function in CommMonitor, where the
125 * send function of the slave port is called. Besides this, these
126 * functions can also perform actions for capturing statistics.
127 */
128 class MonitorMasterPort : public MasterPort
129 {
130
131 public:
132
133 MonitorMasterPort(const std::string& _name, CommMonitor& _mon)
134 : MasterPort(_name, &_mon), mon(_mon)
135 { }
136
137 protected:
138
139 void recvFunctionalSnoop(PacketPtr pkt)
140 {
141 mon.recvFunctionalSnoop(pkt);
142 }
143
144 Tick recvAtomicSnoop(PacketPtr pkt)
145 {
146 return mon.recvAtomicSnoop(pkt);
147 }
148
149 bool recvTimingResp(PacketPtr pkt)
150 {
151 return mon.recvTimingResp(pkt);
152 }
153
154 void recvTimingSnoopReq(PacketPtr pkt)
155 {
156 mon.recvTimingSnoopReq(pkt);
157 }
158
159 void recvRangeChange()
160 {
161 mon.recvRangeChange();
162 }
163
164 bool isSnooping() const
165 {
166 return mon.isSnooping();
167 }
168
169 void recvReqRetry()
170 {
171 mon.recvReqRetry();
172 }
173
174 void recvRetrySnoopResp()
175 {
176 mon.recvRetrySnoopResp();
177 }
178
179 private:
180
181 CommMonitor& mon;
182
183 };
184
185 /** Instance of master port, facing the memory side */
186 MonitorMasterPort masterPort;
187
188 /**
189 * This is the slave port of the communication monitor. All recv
190 * functions call a function in CommMonitor, where the
191 * send function of the master port is called. Besides this, these
192 * functions can also perform actions for capturing statistics.
193 */
194 class MonitorSlavePort : public SlavePort
195 {
196
197 public:
198
199 MonitorSlavePort(const std::string& _name, CommMonitor& _mon)
200 : SlavePort(_name, &_mon), mon(_mon)
201 { }
202
203 protected:
204
205 void recvFunctional(PacketPtr pkt)
206 {
207 mon.recvFunctional(pkt);
208 }
209
210 Tick recvAtomic(PacketPtr pkt)
211 {
212 return mon.recvAtomic(pkt);
213 }
214
215 bool recvTimingReq(PacketPtr pkt)
216 {
217 return mon.recvTimingReq(pkt);
218 }
219
220 bool recvTimingSnoopResp(PacketPtr pkt)
221 {
222 return mon.recvTimingSnoopResp(pkt);
223 }
224
225 AddrRangeList getAddrRanges() const
226 {
227 return mon.getAddrRanges();
228 }
229
230 void recvRespRetry()
231 {
232 mon.recvRespRetry();
233 }
234
| 3 * Copyright (c) 2016 Google Inc.
4 * Copyright (c) 2017, Centre National de la Recherche Scientifique
5 * All rights reserved.
6 *
7 * The license below extends only to copyright in the software and shall
8 * not be construed as granting a license to any other intellectual
9 * property including but not limited to intellectual property relating
10 * to a hardware implementation of the functionality of the software
11 * licensed hereunder. You may use the software subject to the license
12 * terms below provided that you ensure that this notice is replicated
13 * unmodified and in its entirety in all distributions of the software,
14 * modified or unmodified, in source code or in binary form.
15 *
16 * Redistribution and use in source and binary forms, with or without
17 * modification, are permitted provided that the following conditions are
18 * met: redistributions of source code must retain the above copyright
19 * notice, this list of conditions and the following disclaimer;
20 * redistributions in binary form must reproduce the above copyright
21 * notice, this list of conditions and the following disclaimer in the
22 * documentation and/or other materials provided with the distribution;
23 * neither the name of the copyright holders nor the names of its
24 * contributors may be used to endorse or promote products derived from
25 * this software without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
28 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
29 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
30 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
31 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
32 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
33 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
34 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
35 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
36 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
37 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
38 *
39 * Authors: Thomas Grass
40 * Andreas Hansson
41 * Rahul Thakur
42 * Pierre-Yves Peneau
43 */
44
45#ifndef __MEM_COMM_MONITOR_HH__
46#define __MEM_COMM_MONITOR_HH__
47
48#include "base/statistics.hh"
49#include "mem/mem_object.hh"
50#include "params/CommMonitor.hh"
51#include "sim/probe/mem.hh"
52
53/**
54 * The communication monitor is a MemObject which can monitor statistics of
55 * the communication happening between two ports in the memory system.
56 *
57 * Currently the following stats are implemented: Histograms of read/write
58 * transactions, read/write burst lengths, read/write bandwidth,
59 * outstanding read/write requests, read latency and inter transaction time
60 * (read-read, write-write, read/write-read/write). Furthermore it allows
61 * to capture the number of accesses to an address over time ("heat map").
62 * All stats can be disabled from Python.
63 */
64class CommMonitor : public MemObject
65{
66
67 public: // Construction & SimObject interfaces
68
69 /** Parameters of communication monitor */
70 typedef CommMonitorParams Params;
71 const Params* params() const
72 { return reinterpret_cast<const Params*>(_params); }
73
74 /**
75 * Constructor based on the Python params
76 *
77 * @param params Python parameters
78 */
79 CommMonitor(Params* params);
80
81 void init() override;
82 void regStats() override;
83 void startup() override;
84 void regProbePoints() override;
85
86 public: // MemObject interfaces
87 BaseMasterPort& getMasterPort(const std::string& if_name,
88 PortID idx = InvalidPortID) override;
89
90 BaseSlavePort& getSlavePort(const std::string& if_name,
91 PortID idx = InvalidPortID) override;
92
93 private:
94
95 /**
96 * Sender state class for the monitor so that we can annotate
97 * packets with a transmit time and receive time.
98 */
99 class CommMonitorSenderState : public Packet::SenderState
100 {
101
102 public:
103
104 /**
105 * Construct a new sender state and store the time so we can
106 * calculate round-trip latency.
107 *
108 * @param _transmitTime Time of packet transmission
109 */
110 CommMonitorSenderState(Tick _transmitTime)
111 : transmitTime(_transmitTime)
112 { }
113
114 /** Destructor */
115 ~CommMonitorSenderState() { }
116
117 /** Tick when request is transmitted */
118 Tick transmitTime;
119
120 };
121
122 /**
123 * This is the master port of the communication monitor. All recv
124 * functions call a function in CommMonitor, where the
125 * send function of the slave port is called. Besides this, these
126 * functions can also perform actions for capturing statistics.
127 */
128 class MonitorMasterPort : public MasterPort
129 {
130
131 public:
132
133 MonitorMasterPort(const std::string& _name, CommMonitor& _mon)
134 : MasterPort(_name, &_mon), mon(_mon)
135 { }
136
137 protected:
138
139 void recvFunctionalSnoop(PacketPtr pkt)
140 {
141 mon.recvFunctionalSnoop(pkt);
142 }
143
144 Tick recvAtomicSnoop(PacketPtr pkt)
145 {
146 return mon.recvAtomicSnoop(pkt);
147 }
148
149 bool recvTimingResp(PacketPtr pkt)
150 {
151 return mon.recvTimingResp(pkt);
152 }
153
154 void recvTimingSnoopReq(PacketPtr pkt)
155 {
156 mon.recvTimingSnoopReq(pkt);
157 }
158
159 void recvRangeChange()
160 {
161 mon.recvRangeChange();
162 }
163
164 bool isSnooping() const
165 {
166 return mon.isSnooping();
167 }
168
169 void recvReqRetry()
170 {
171 mon.recvReqRetry();
172 }
173
174 void recvRetrySnoopResp()
175 {
176 mon.recvRetrySnoopResp();
177 }
178
179 private:
180
181 CommMonitor& mon;
182
183 };
184
185 /** Instance of master port, facing the memory side */
186 MonitorMasterPort masterPort;
187
188 /**
189 * This is the slave port of the communication monitor. All recv
190 * functions call a function in CommMonitor, where the
191 * send function of the master port is called. Besides this, these
192 * functions can also perform actions for capturing statistics.
193 */
194 class MonitorSlavePort : public SlavePort
195 {
196
197 public:
198
199 MonitorSlavePort(const std::string& _name, CommMonitor& _mon)
200 : SlavePort(_name, &_mon), mon(_mon)
201 { }
202
203 protected:
204
205 void recvFunctional(PacketPtr pkt)
206 {
207 mon.recvFunctional(pkt);
208 }
209
210 Tick recvAtomic(PacketPtr pkt)
211 {
212 return mon.recvAtomic(pkt);
213 }
214
215 bool recvTimingReq(PacketPtr pkt)
216 {
217 return mon.recvTimingReq(pkt);
218 }
219
220 bool recvTimingSnoopResp(PacketPtr pkt)
221 {
222 return mon.recvTimingSnoopResp(pkt);
223 }
224
225 AddrRangeList getAddrRanges() const
226 {
227 return mon.getAddrRanges();
228 }
229
230 void recvRespRetry()
231 {
232 mon.recvRespRetry();
233 }
234
|
272 /** Stats declarations, all in a struct for convenience. */
273 struct MonitorStats
274 {
275
276 /** Disable flag for burst length histograms **/
277 bool disableBurstLengthHists;
278
279 /** Histogram of read burst lengths */
280 Stats::Histogram readBurstLengthHist;
281
282 /** Histogram of write burst lengths */
283 Stats::Histogram writeBurstLengthHist;
284
285 /** Disable flag for the bandwidth histograms */
286 bool disableBandwidthHists;
287
288 /**
289 * Histogram for read bandwidth per sample window. The
290 * internal counter is an unsigned int rather than a stat.
291 */
292 unsigned int readBytes;
293 Stats::Histogram readBandwidthHist;
294 Stats::Formula averageReadBW;
295 Stats::Scalar totalReadBytes;
296
297 /**
298 * Histogram for write bandwidth per sample window. The
299 * internal counter is an unsigned int rather than a stat.
300 */
301 unsigned int writtenBytes;
302 Stats::Histogram writeBandwidthHist;
303 Stats::Formula averageWriteBW;
304 Stats::Scalar totalWrittenBytes;
305
306 /** Disable flag for latency histograms. */
307 bool disableLatencyHists;
308
309 /** Histogram of read request-to-response latencies */
310 Stats::Histogram readLatencyHist;
311
312 /** Histogram of write request-to-response latencies */
313 Stats::Histogram writeLatencyHist;
314
315 /** Disable flag for ITT distributions. */
316 bool disableITTDists;
317
318 /**
319 * Inter transaction time (ITT) distributions. There are
320 * histograms of the time between two read, write or arbitrary
321 * accesses. The time of a request is the tick at which the
322 * request is forwarded by the monitor.
323 */
324 Stats::Distribution ittReadRead;
325 Stats::Distribution ittWriteWrite;
326 Stats::Distribution ittReqReq;
327 Tick timeOfLastRead;
328 Tick timeOfLastWrite;
329 Tick timeOfLastReq;
330
331 /** Disable flag for outstanding histograms. */
332 bool disableOutstandingHists;
333
334 /**
335 * Histogram of outstanding read requests. Counter for
336 * outstanding read requests is an unsigned integer because
337 * it should not be reset when stats are reset.
338 */
339 Stats::Histogram outstandingReadsHist;
340 unsigned int outstandingReadReqs;
341
342 /**
343 * Histogram of outstanding write requests. Counter for
344 * outstanding write requests is an unsigned integer because
345 * it should not be reset when stats are reset.
346 */
347 Stats::Histogram outstandingWritesHist;
348 unsigned int outstandingWriteReqs;
349
350 /** Disable flag for transaction histograms. */
351 bool disableTransactionHists;
352
353 /** Histogram of number of read transactions per time bin */
354 Stats::Histogram readTransHist;
355 unsigned int readTrans;
356
357 /** Histogram of number of timing write transactions per time bin */
358 Stats::Histogram writeTransHist;
359 unsigned int writeTrans;
360
361 /** Disable flag for address distributions. */
362 bool disableAddrDists;
363
364 /** Address mask for sources of read accesses to be captured */
365 const Addr readAddrMask;
366
367 /** Address mask for sources of write accesses to be captured */
368 const Addr writeAddrMask;
369
370 /**
371 * Histogram of number of read accesses to addresses over
372 * time.
373 */
374 Stats::SparseHistogram readAddrDist;
375
376 /**
377 * Histogram of number of write accesses to addresses over
378 * time.
379 */
380 Stats::SparseHistogram writeAddrDist;
381
382 /**
383 * Create the monitor stats and initialise all the members
384 * that are not statistics themselves, but used to control the
385 * stats or track values during a sample period.
386 */
387 MonitorStats(const CommMonitorParams* params) :
388 disableBurstLengthHists(params->disable_burst_length_hists),
389 disableBandwidthHists(params->disable_bandwidth_hists),
390 readBytes(0), writtenBytes(0),
391 disableLatencyHists(params->disable_latency_hists),
392 disableITTDists(params->disable_itt_dists),
393 timeOfLastRead(0), timeOfLastWrite(0), timeOfLastReq(0),
394 disableOutstandingHists(params->disable_outstanding_hists),
395 outstandingReadReqs(0), outstandingWriteReqs(0),
396 disableTransactionHists(params->disable_transaction_hists),
397 readTrans(0), writeTrans(0),
398 disableAddrDists(params->disable_addr_dists),
399 readAddrMask(params->read_addr_mask),
400 writeAddrMask(params->write_addr_mask)
401 { }
402
403 void updateReqStats(const ProbePoints::PacketInfo& pkt, bool is_atomic,
404 bool expects_response);
405 void updateRespStats(const ProbePoints::PacketInfo& pkt, Tick latency,
406 bool is_atomic);
407 };
408
409 /** This function is called periodically at the end of each time bin */
410 void samplePeriodic();
411
412 /** Periodic event called at the end of each simulation time bin */
413 EventFunctionWrapper samplePeriodicEvent;
414
415 /**
416 *@{
417 * @name Configuration
418 */
419
420 /** Length of simulation time bin*/
421 const Tick samplePeriodTicks;
422 /** Sample period in seconds */
423 const double samplePeriod;
424
425 /** @} */
426
427 /** Instantiate stats */
428 MonitorStats stats;
429
430 protected: // Probe points
431 /**
432 * @{
433 * @name Memory system probe points
434 */
435
436 /** Successfully forwarded request packet */
437 ProbePoints::PacketUPtr ppPktReq;
438
439 /** Successfully forwarded response packet */
440 ProbePoints::PacketUPtr ppPktResp;
441
442 /** @} */
443};
444
445#endif //__MEM_COMM_MONITOR_HH__
| 279 /** Stats declarations, all in a struct for convenience. */
280 struct MonitorStats
281 {
282
283 /** Disable flag for burst length histograms **/
284 bool disableBurstLengthHists;
285
286 /** Histogram of read burst lengths */
287 Stats::Histogram readBurstLengthHist;
288
289 /** Histogram of write burst lengths */
290 Stats::Histogram writeBurstLengthHist;
291
292 /** Disable flag for the bandwidth histograms */
293 bool disableBandwidthHists;
294
295 /**
296 * Histogram for read bandwidth per sample window. The
297 * internal counter is an unsigned int rather than a stat.
298 */
299 unsigned int readBytes;
300 Stats::Histogram readBandwidthHist;
301 Stats::Formula averageReadBW;
302 Stats::Scalar totalReadBytes;
303
304 /**
305 * Histogram for write bandwidth per sample window. The
306 * internal counter is an unsigned int rather than a stat.
307 */
308 unsigned int writtenBytes;
309 Stats::Histogram writeBandwidthHist;
310 Stats::Formula averageWriteBW;
311 Stats::Scalar totalWrittenBytes;
312
313 /** Disable flag for latency histograms. */
314 bool disableLatencyHists;
315
316 /** Histogram of read request-to-response latencies */
317 Stats::Histogram readLatencyHist;
318
319 /** Histogram of write request-to-response latencies */
320 Stats::Histogram writeLatencyHist;
321
322 /** Disable flag for ITT distributions. */
323 bool disableITTDists;
324
325 /**
326 * Inter transaction time (ITT) distributions. There are
327 * histograms of the time between two read, write or arbitrary
328 * accesses. The time of a request is the tick at which the
329 * request is forwarded by the monitor.
330 */
331 Stats::Distribution ittReadRead;
332 Stats::Distribution ittWriteWrite;
333 Stats::Distribution ittReqReq;
334 Tick timeOfLastRead;
335 Tick timeOfLastWrite;
336 Tick timeOfLastReq;
337
338 /** Disable flag for outstanding histograms. */
339 bool disableOutstandingHists;
340
341 /**
342 * Histogram of outstanding read requests. Counter for
343 * outstanding read requests is an unsigned integer because
344 * it should not be reset when stats are reset.
345 */
346 Stats::Histogram outstandingReadsHist;
347 unsigned int outstandingReadReqs;
348
349 /**
350 * Histogram of outstanding write requests. Counter for
351 * outstanding write requests is an unsigned integer because
352 * it should not be reset when stats are reset.
353 */
354 Stats::Histogram outstandingWritesHist;
355 unsigned int outstandingWriteReqs;
356
357 /** Disable flag for transaction histograms. */
358 bool disableTransactionHists;
359
360 /** Histogram of number of read transactions per time bin */
361 Stats::Histogram readTransHist;
362 unsigned int readTrans;
363
364 /** Histogram of number of timing write transactions per time bin */
365 Stats::Histogram writeTransHist;
366 unsigned int writeTrans;
367
368 /** Disable flag for address distributions. */
369 bool disableAddrDists;
370
371 /** Address mask for sources of read accesses to be captured */
372 const Addr readAddrMask;
373
374 /** Address mask for sources of write accesses to be captured */
375 const Addr writeAddrMask;
376
377 /**
378 * Histogram of number of read accesses to addresses over
379 * time.
380 */
381 Stats::SparseHistogram readAddrDist;
382
383 /**
384 * Histogram of number of write accesses to addresses over
385 * time.
386 */
387 Stats::SparseHistogram writeAddrDist;
388
389 /**
390 * Create the monitor stats and initialise all the members
391 * that are not statistics themselves, but used to control the
392 * stats or track values during a sample period.
393 */
394 MonitorStats(const CommMonitorParams* params) :
395 disableBurstLengthHists(params->disable_burst_length_hists),
396 disableBandwidthHists(params->disable_bandwidth_hists),
397 readBytes(0), writtenBytes(0),
398 disableLatencyHists(params->disable_latency_hists),
399 disableITTDists(params->disable_itt_dists),
400 timeOfLastRead(0), timeOfLastWrite(0), timeOfLastReq(0),
401 disableOutstandingHists(params->disable_outstanding_hists),
402 outstandingReadReqs(0), outstandingWriteReqs(0),
403 disableTransactionHists(params->disable_transaction_hists),
404 readTrans(0), writeTrans(0),
405 disableAddrDists(params->disable_addr_dists),
406 readAddrMask(params->read_addr_mask),
407 writeAddrMask(params->write_addr_mask)
408 { }
409
410 void updateReqStats(const ProbePoints::PacketInfo& pkt, bool is_atomic,
411 bool expects_response);
412 void updateRespStats(const ProbePoints::PacketInfo& pkt, Tick latency,
413 bool is_atomic);
414 };
415
416 /** This function is called periodically at the end of each time bin */
417 void samplePeriodic();
418
419 /** Periodic event called at the end of each simulation time bin */
420 EventFunctionWrapper samplePeriodicEvent;
421
422 /**
423 *@{
424 * @name Configuration
425 */
426
427 /** Length of simulation time bin*/
428 const Tick samplePeriodTicks;
429 /** Sample period in seconds */
430 const double samplePeriod;
431
432 /** @} */
433
434 /** Instantiate stats */
435 MonitorStats stats;
436
437 protected: // Probe points
438 /**
439 * @{
440 * @name Memory system probe points
441 */
442
443 /** Successfully forwarded request packet */
444 ProbePoints::PacketUPtr ppPktReq;
445
446 /** Successfully forwarded response packet */
447 ProbePoints::PacketUPtr ppPktResp;
448
449 /** @} */
450};
451
452#endif //__MEM_COMM_MONITOR_HH__
|