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
|
/*
* Copyright (c) 2003 The Regents of The University of Michigan
* 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.
*/
#ifndef __BUILDER_HH__
#define __BUILDER_HH__
#include <iosfwd>
#include <list>
#include <map>
#include <vector>
#include "sim/param.hh"
class SimObject;
std::ostream &
builderStream();
//
// A SimObjectBuilder serves as an evaluation context for a set of
// parameters that describe a specific instance of a SimObject. This
// evaluation context corresponds to a section in the .ini file (as
// with the base ParamContext) plus an optional node in the
// configuration hierarchy (the configNode member) for resolving
// SimObject references. SimObjectBuilder is an abstract superclass;
// derived classes specialize the class for particular subclasses of
// SimObject (e.g., BaseCache).
//
// For typical usage, see the definition of
// SimObjectClass::createObject().
//
class SimObjectBuilder : public ParamContext
{
private:
// name of the instance we are creating
std::string instanceName;
// The corresponding node in the configuration hierarchy.
// (optional: may be null if the created object is not in the
// hierarchy)
ConfigNode *configNode;
// The external SimObject class name (for error messages)
std::string simObjClassName;
public:
SimObjectBuilder(const std::string &_configClass,
const std::string &_instanceName,
ConfigNode *_configNode,
const std::string &_simObjClassName);
virtual ~SimObjectBuilder();
// call parse() on all params in this context to convert string
// representations to parameter values
virtual void parseParams(IniFile &iniFile);
// parameter error prolog (override of ParamContext)
virtual void printErrorProlog(std::ostream &);
// generate the name for this SimObject instance (derived from the
// configuration hierarchy node label and position)
virtual const std::string &getInstanceName() { return instanceName; }
// return the configuration hierarchy node for this context.
virtual ConfigNode *getConfigNode() { return configNode; }
// Create the actual SimObject corresponding to the parameter
// values in this context. This function is overridden in derived
// classes to call a specific constructor for a particular
// subclass of SimObject.
virtual SimObject *create() = 0;
};
//
// Handy macros for initializing parameter members of classes derived
// from SimObjectBuilder. Assumes that the name of the parameter
// member object is the same as the textual parameter name seen by the
// user. (Note that '#p' is expanded by the preprocessor to '"p"'.)
//
#define INIT_PARAM(p, desc) p(this, #p, desc)
#define INIT_PARAM_DFLT(p, desc, dflt) p(this, #p, desc, dflt)
//
// Initialize an enumeration variable... assumes that 'map' is the
// name of an array of mappings (char * for SimpleEnumParam, or
// EnumParamMap for MappedEnumParam).
//
#define INIT_ENUM_PARAM(p, desc, map) \
p(this, #p, desc, map, sizeof(map)/sizeof(map[0]))
#define INIT_ENUM_PARAM_DFLT(p, desc, map, dflt) \
p(this, #p, desc, map, sizeof(map)/sizeof(map[0]), dflt)
//
// An instance of SimObjectClass corresponds to a class derived from
// SimObject. The SimObjectClass instance serves to bind the string
// name (found in the config file) to a function that creates an
// instance of the appropriate derived class.
//
// This would be much cleaner in Smalltalk or Objective-C, where types
// are first-class objects themselves.
//
class SimObjectClass
{
public:
// Type CreateFunc is a pointer to a function that creates a new
// simulation object builder based on a .ini-file parameter
// section (specified by the first string argument), a unique name
// for the object (specified by the second string argument), and
// an optional config hierarchy node (specified by the third
// argument). A pointer to the new SimObjectBuilder is returned.
typedef SimObjectBuilder *(*CreateFunc)(const std::string &configClassName,
const std::string &objName,
ConfigNode *configNode,
const std::string &simObjClassName);
static std::map<std::string,CreateFunc> *classMap;
// Constructor. For example:
//
// SimObjectClass baseCacheClass("BaseCache", newBaseCacheBuilder);
//
SimObjectClass(const std::string &className, CreateFunc createFunc);
// create SimObject given name of class and pointer to
// configuration hierarchy node
static SimObject *createObject(IniFile &configDB,
const std::string &configClassName,
const std::string &objName,
ConfigNode *configNode);
// print descriptions of all parameters registered with all
// SimObject classes
static void describeAllClasses(std::ostream &os);
};
//
// Macros to encapsulate the magic of declaring & defining
// SimObjectBuilder and SimObjectClass objects
//
#define BEGIN_DECLARE_SIM_OBJECT_PARAMS(OBJ_CLASS) \
class OBJ_CLASS##Builder : public SimObjectBuilder \
{ \
public:
#define END_DECLARE_SIM_OBJECT_PARAMS(OBJ_CLASS) \
\
OBJ_CLASS##Builder(const std::string &configClass, \
const std::string &instanceName, \
ConfigNode *configNode, \
const std::string &simObjClassName); \
virtual ~OBJ_CLASS##Builder() {} \
\
OBJ_CLASS *create(); \
};
#define BEGIN_INIT_SIM_OBJECT_PARAMS(OBJ_CLASS) \
OBJ_CLASS##Builder::OBJ_CLASS##Builder(const std::string &configClass, \
const std::string &instanceName, \
ConfigNode *configNode, \
const std::string &simObjClassName) \
: SimObjectBuilder(configClass, instanceName, \
configNode, simObjClassName),
#define END_INIT_SIM_OBJECT_PARAMS(OBJ_CLASS) \
{ \
}
#define CREATE_SIM_OBJECT(OBJ_CLASS) \
OBJ_CLASS *OBJ_CLASS##Builder::create()
#define REGISTER_SIM_OBJECT(CLASS_NAME, OBJ_CLASS) \
SimObjectBuilder * \
new##OBJ_CLASS##Builder(const std::string &configClass, \
const std::string &instanceName, \
ConfigNode *configNode, \
const std::string &simObjClassName) \
{ \
return new OBJ_CLASS##Builder(configClass, instanceName, \
configNode, simObjClassName); \
} \
\
SimObjectClass the##OBJ_CLASS##Class(CLASS_NAME, \
new##OBJ_CLASS##Builder); \
\
/* see param.hh */ \
DEFINE_SIM_OBJECT_CLASS_NAME(CLASS_NAME, OBJ_CLASS)
#endif // __BUILDER_HH__
|
