2 * Copyright (c) 2001-2005 The Regents of The University of Michigan
3 * Copyright (c) 2010 Advanced Micro Devices, Inc.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are
8 * met: redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer;
10 * redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution;
13 * neither the name of the copyright holders nor the names of its
14 * contributors may be used to endorse or promote products derived from
15 * this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 *
29 * Authors: Steve Reinhardt
30 * Nathan Binkert
31 */
32
33/* @file
34 * User Console Definitions
35 */
36
37#ifndef __SIM_OBJECT_HH__
38#define __SIM_OBJECT_HH__
39
40#include <iostream>
41#include <list>
42#include <map>
43#include <string>
44#include <vector>
45
46#include "enums/MemoryMode.hh"
47#include "params/SimObject.hh"
48#include "sim/drain.hh"
49#include "sim/eventq_impl.hh"
50#include "sim/serialize.hh"
51
52class BaseCPU;
53class Event;
54class ProbeManager;
55/**
56 * Abstract superclass for simulation objects. Represents things that
57 * correspond to physical components and can be specified via the
58 * config file (CPUs, caches, etc.).
59 *
60 * SimObject initialization is controlled by the instantiate method in
61 * src/python/m5/simulate.py. There are slightly different
62 * initialization paths when starting the simulation afresh and when
63 * loading from a checkpoint. After instantiation and connecting
64 * ports, simulate.py initializes the object using the following call
65 * sequence:
66 *
67 * <ol>
68 * <li>SimObject::init()
69 * <li>SimObject::regStats()
70 * <li><ul>
71 * <li>SimObject::initState() if starting afresh.
72 * <li>SimObject::loadState() if restoring from a checkpoint.
73 * </ul>
74 * <li>SimObject::resetStats()
75 * <li>SimObject::startup()
76 * <li>Drainable::drainResume() if resuming from a checkpoint.
77 * </ol>
78 *
79 * @note Whenever a method is called on all objects in the simulator's
80 * object tree (e.g., init(), startup(), or loadState()), a pre-order
81 * depth-first traversal is performed (see descendants() in
82 * SimObject.py). This has the effect of calling the method on the
83 * parent node <i>before</i> its children.
84 */
85class SimObject : public EventManager, public Serializable, public Drainable
86{
87 private:
88 typedef std::vector<SimObject *> SimObjectList;
89
90 /** List of all instantiated simulation objects. */
91 static SimObjectList simObjectList;
92
93 /** Manager coordinates hooking up probe points with listeners. */
94 ProbeManager *probeManager;
95
96 protected:
97 /** Cached copy of the object parameters. */
98 const SimObjectParams *_params;
99
100 public:
101 typedef SimObjectParams Params;
102 const Params *params() const { return _params; }
103 SimObject(const Params *_params);
104 virtual ~SimObject();
105
106 public:
107
108 virtual const std::string name() const { return params()->name; }
109
110 /**
111 * init() is called after all C++ SimObjects have been created and
112 * all ports are connected. Initializations that are independent
113 * of unserialization but rely on a fully instantiated and
114 * connected SimObject graph should be done here.
115 */
116 virtual void init();
117
118 /**
119 * loadState() is called on each SimObject when restoring from a
120 * checkpoint. The default implementation simply calls
121 * unserialize() if there is a corresponding section in the
122 * checkpoint. However, objects can override loadState() to get
123 * other behaviors, e.g., doing other programmed initializations
124 * after unserialize(), or complaining if no checkpoint section is
125 * found.
126 *
127 * @param cp Checkpoint to restore the state from.
128 */
129 virtual void loadState(CheckpointIn &cp);
130
131 /**
132 * initState() is called on each SimObject when *not* restoring
133 * from a checkpoint. This provides a hook for state
134 * initializations that are only required for a "cold start".
135 */
136 virtual void initState();
137
138 /**
139 * Register statistics for this object.
140 */
141 virtual void regStats();
142
143 /**
144 * Reset statistics associated with this object.
145 */
146 virtual void resetStats();
147
148 /**
149 * Register probe points for this object.
150 */
151 virtual void regProbePoints();
152
153 /**
154 * Register probe listeners for this object.
155 */
156 virtual void regProbeListeners();
157
158 /**
159 * Get the probe manager for this object.
160 */
161 ProbeManager *getProbeManager();
162
163 /**
164 * startup() is the final initialization call before simulation.
165 * All state is initialized (including unserialized state, if any,
166 * such as the curTick() value), so this is the appropriate place to
167 * schedule initial event(s) for objects that need them.
168 */
169 virtual void startup();
170
171 /**
172 * Provide a default implementation of the drain interface that
173 * simply returns 0 (draining completed) and sets the drain state
174 * to Drained.
175 */
176 unsigned int drain(DrainManager *drainManger);
177
| 14 * Copyright (c) 2001-2005 The Regents of The University of Michigan
15 * Copyright (c) 2010 Advanced Micro Devices, Inc.
16 * All rights reserved.
17 *
18 * Redistribution and use in source and binary forms, with or without
19 * modification, are permitted provided that the following conditions are
20 * met: redistributions of source code must retain the above copyright
21 * notice, this list of conditions and the following disclaimer;
22 * redistributions in binary form must reproduce the above copyright
23 * notice, this list of conditions and the following disclaimer in the
24 * documentation and/or other materials provided with the distribution;
25 * neither the name of the copyright holders nor the names of its
26 * contributors may be used to endorse or promote products derived from
27 * this software without specific prior written permission.
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
30 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
31 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
32 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
33 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
34 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
35 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
36 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
37 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
38 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
39 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
40 *
41 * Authors: Steve Reinhardt
42 * Nathan Binkert
43 */
44
45/* @file
46 * User Console Definitions
47 */
48
49#ifndef __SIM_OBJECT_HH__
50#define __SIM_OBJECT_HH__
51
52#include <iostream>
53#include <list>
54#include <map>
55#include <string>
56#include <vector>
57
58#include "enums/MemoryMode.hh"
59#include "params/SimObject.hh"
60#include "sim/drain.hh"
61#include "sim/eventq_impl.hh"
62#include "sim/serialize.hh"
63
64class BaseCPU;
65class Event;
66class ProbeManager;
67/**
68 * Abstract superclass for simulation objects. Represents things that
69 * correspond to physical components and can be specified via the
70 * config file (CPUs, caches, etc.).
71 *
72 * SimObject initialization is controlled by the instantiate method in
73 * src/python/m5/simulate.py. There are slightly different
74 * initialization paths when starting the simulation afresh and when
75 * loading from a checkpoint. After instantiation and connecting
76 * ports, simulate.py initializes the object using the following call
77 * sequence:
78 *
79 * <ol>
80 * <li>SimObject::init()
81 * <li>SimObject::regStats()
82 * <li><ul>
83 * <li>SimObject::initState() if starting afresh.
84 * <li>SimObject::loadState() if restoring from a checkpoint.
85 * </ul>
86 * <li>SimObject::resetStats()
87 * <li>SimObject::startup()
88 * <li>Drainable::drainResume() if resuming from a checkpoint.
89 * </ol>
90 *
91 * @note Whenever a method is called on all objects in the simulator's
92 * object tree (e.g., init(), startup(), or loadState()), a pre-order
93 * depth-first traversal is performed (see descendants() in
94 * SimObject.py). This has the effect of calling the method on the
95 * parent node <i>before</i> its children.
96 */
97class SimObject : public EventManager, public Serializable, public Drainable
98{
99 private:
100 typedef std::vector<SimObject *> SimObjectList;
101
102 /** List of all instantiated simulation objects. */
103 static SimObjectList simObjectList;
104
105 /** Manager coordinates hooking up probe points with listeners. */
106 ProbeManager *probeManager;
107
108 protected:
109 /** Cached copy of the object parameters. */
110 const SimObjectParams *_params;
111
112 public:
113 typedef SimObjectParams Params;
114 const Params *params() const { return _params; }
115 SimObject(const Params *_params);
116 virtual ~SimObject();
117
118 public:
119
120 virtual const std::string name() const { return params()->name; }
121
122 /**
123 * init() is called after all C++ SimObjects have been created and
124 * all ports are connected. Initializations that are independent
125 * of unserialization but rely on a fully instantiated and
126 * connected SimObject graph should be done here.
127 */
128 virtual void init();
129
130 /**
131 * loadState() is called on each SimObject when restoring from a
132 * checkpoint. The default implementation simply calls
133 * unserialize() if there is a corresponding section in the
134 * checkpoint. However, objects can override loadState() to get
135 * other behaviors, e.g., doing other programmed initializations
136 * after unserialize(), or complaining if no checkpoint section is
137 * found.
138 *
139 * @param cp Checkpoint to restore the state from.
140 */
141 virtual void loadState(CheckpointIn &cp);
142
143 /**
144 * initState() is called on each SimObject when *not* restoring
145 * from a checkpoint. This provides a hook for state
146 * initializations that are only required for a "cold start".
147 */
148 virtual void initState();
149
150 /**
151 * Register statistics for this object.
152 */
153 virtual void regStats();
154
155 /**
156 * Reset statistics associated with this object.
157 */
158 virtual void resetStats();
159
160 /**
161 * Register probe points for this object.
162 */
163 virtual void regProbePoints();
164
165 /**
166 * Register probe listeners for this object.
167 */
168 virtual void regProbeListeners();
169
170 /**
171 * Get the probe manager for this object.
172 */
173 ProbeManager *getProbeManager();
174
175 /**
176 * startup() is the final initialization call before simulation.
177 * All state is initialized (including unserialized state, if any,
178 * such as the curTick() value), so this is the appropriate place to
179 * schedule initial event(s) for objects that need them.
180 */
181 virtual void startup();
182
183 /**
184 * Provide a default implementation of the drain interface that
185 * simply returns 0 (draining completed) and sets the drain state
186 * to Drained.
187 */
188 unsigned int drain(DrainManager *drainManger);
189
|