summaryrefslogtreecommitdiff
path: root/src/mem/ruby/system/System.cc
blob: 81824b9b77ea38f59c84bf23188856a536d3a7a2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
/*
 * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
 * 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 "base/intmath.hh"
#include "base/output.hh"
#include "mem/ruby/buffers/MessageBuffer.hh"
#include "mem/ruby/common/Address.hh"
#include "mem/ruby/network/Network.hh"
#include "mem/ruby/profiler/Profiler.hh"
#include "mem/ruby/recorder/Tracer.hh"
#include "mem/ruby/slicc_interface/AbstractController.hh"
#include "mem/ruby/system/MemoryVector.hh"
#include "mem/ruby/system/System.hh"

using namespace std;

int RubySystem::m_random_seed;
bool RubySystem::m_randomization;
Tick RubySystem::m_clock;
int RubySystem::m_block_size_bytes;
int RubySystem::m_block_size_bits;
uint64 RubySystem::m_memory_size_bytes;
int RubySystem::m_memory_size_bits;

Network* RubySystem::m_network_ptr;
Profiler* RubySystem::m_profiler_ptr;
Tracer* RubySystem::m_tracer_ptr;
MemoryVector* RubySystem::m_mem_vec_ptr;

RubySystem::RubySystem(const Params *p)
    : SimObject(p)
{
    if (g_system_ptr != NULL)
        fatal("Only one RubySystem object currently allowed.\n");

    m_random_seed = p->random_seed;
    srandom(m_random_seed);
    m_randomization = p->randomization;
    m_clock = p->clock;

    m_block_size_bytes = p->block_size_bytes;
    assert(isPowerOf2(m_block_size_bytes));
    m_block_size_bits = floorLog2(m_block_size_bytes);

    m_memory_size_bytes = p->mem_size;
    if (m_memory_size_bytes == 0) {
        m_memory_size_bits = 0;
    } else {
        m_memory_size_bits = floorLog2(m_memory_size_bytes);
    }

    g_eventQueue_ptr = new RubyEventQueue(p->eventq, m_clock);
    g_system_ptr = this;
    if (p->no_mem_vec) {
        m_mem_vec_ptr = NULL;
    } else {
        m_mem_vec_ptr = new MemoryVector;
        m_mem_vec_ptr->resize(m_memory_size_bytes);
    }

    //
    // Print ruby configuration and stats at exit
    //
    RubyExitCallback* rubyExitCB = new RubyExitCallback(p->stats_filename);
    registerExitCallback(rubyExitCB);
}

void
RubySystem::init()
{
    m_profiler_ptr->clearStats();
}

void
RubySystem::registerNetwork(Network* network_ptr)
{
  m_network_ptr = network_ptr;
}

void
RubySystem::registerProfiler(Profiler* profiler_ptr)
{
  m_profiler_ptr = profiler_ptr;
}

void
RubySystem::registerTracer(Tracer* tracer_ptr)
{
  m_tracer_ptr = tracer_ptr;
}

void
RubySystem::registerAbstractController(AbstractController* cntrl)
{
  m_abs_cntrl_vec.push_back(cntrl);
}

RubySystem::~RubySystem()
{
    delete m_network_ptr;
    delete m_profiler_ptr;
    delete m_tracer_ptr;
    if (m_mem_vec_ptr)
        delete m_mem_vec_ptr;
}

void
RubySystem::printSystemConfig(ostream & out)
{
    out << "RubySystem config:" << endl
        << "  random_seed: " << m_random_seed << endl
        << "  randomization: " << m_randomization << endl
        << "  cycle_period: " << m_clock << endl
        << "  block_size_bytes: " << m_block_size_bytes << endl
        << "  block_size_bits: " << m_block_size_bits << endl
        << "  memory_size_bytes: " << m_memory_size_bytes << endl
        << "  memory_size_bits: " << m_memory_size_bits << endl;
}

void
RubySystem::printConfig(ostream& out)
{
    out << "\n================ Begin RubySystem Configuration Print ================\n\n";
    printSystemConfig(out);
    m_network_ptr->printConfig(out);
    m_profiler_ptr->printConfig(out);
    out << "\n================ End RubySystem Configuration Print ================\n\n";
}

void
RubySystem::printStats(ostream& out)
{
    const time_t T = time(NULL);
    tm *localTime = localtime(&T);
    char buf[100];
    strftime(buf, 100, "%b/%d/%Y %H:%M:%S", localTime);

    out << "Real time: " << buf << endl;

    m_profiler_ptr->printStats(out);
    m_network_ptr->printStats(out);
}

void
RubySystem::serialize(std::ostream &os)
{

}

void
RubySystem::unserialize(Checkpoint *cp, const string &section)
{
    //
    // The main purpose for clearing stats in the unserialize process is so
    // that the profiler can correctly set its start time to the unserialized
    // value of curTick()
    //
    clearStats();
}

void
RubySystem::clearStats() const
{
    m_profiler_ptr->clearStats();
    m_network_ptr->clearStats();
}

void
RubySystem::recordCacheContents(CacheRecorder& tr) const
{
}

#ifdef CHECK_COHERENCE
// This code will check for cases if the given cache block is exclusive in
// one node and shared in another-- a coherence violation
//
// To use, the SLICC specification must call sequencer.checkCoherence(address)
// when the controller changes to a state with new permissions.  Do this
// in setState.  The SLICC spec must also define methods "isBlockShared"
// and "isBlockExclusive" that are specific to that protocol
//
void
RubySystem::checkGlobalCoherenceInvariant(const Address& addr)
{
#if 0
    NodeID exclusive = -1;
    bool sharedDetected = false;
    NodeID lastShared = -1;

    for (int i = 0; i < m_chip_vector.size(); i++) {
        if (m_chip_vector[i]->isBlockExclusive(addr)) {
            if (exclusive != -1) {
                // coherence violation
                WARN_EXPR(exclusive);
                WARN_EXPR(m_chip_vector[i]->getID());
                WARN_EXPR(addr);
                WARN_EXPR(g_eventQueue_ptr->getTime());
                ERROR_MSG("Coherence Violation Detected -- 2 exclusive chips");
            } else if (sharedDetected) {
                WARN_EXPR(lastShared);
                WARN_EXPR(m_chip_vector[i]->getID());
                WARN_EXPR(addr);
                WARN_EXPR(g_eventQueue_ptr->getTime());
                ERROR_MSG("Coherence Violation Detected -- exclusive chip with >=1 shared");
            } else {
                exclusive = m_chip_vector[i]->getID();
            }
        } else if (m_chip_vector[i]->isBlockShared(addr)) {
            sharedDetected = true;
            lastShared = m_chip_vector[i]->getID();

            if (exclusive != -1) {
                WARN_EXPR(lastShared);
                WARN_EXPR(exclusive);
                WARN_EXPR(addr);
                WARN_EXPR(g_eventQueue_ptr->getTime());
                ERROR_MSG("Coherence Violation Detected -- exclusive chip with >=1 shared");
            }
        }
    }
#endif
}
#endif

RubySystem *
RubySystemParams::create()
{
    return new RubySystem(this);
}

/**
 * virtual process function that is invoked when the callback
 * queue is executed.
 */
void
RubyExitCallback::process()
{
    std::ostream *os = simout.create(stats_filename);
    RubySystem::printConfig(*os);
    *os << endl;
    RubySystem::printStats(*os);
}