serialize.hh (10903:022e5d110a22) | serialize.hh (10905:a6ca6831e775) |
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1/* | 1/* |
2 * Copyright (c) 2015 ARM Limited 3 * All rights reserved 4 * 5 * The license below extends only to copyright in the software and shall 6 * not be construed as granting a license to any other intellectual 7 * property including but not limited to intellectual property relating 8 * to a hardware implementation of the functionality of the software 9 * licensed hereunder. You may use the software subject to the license 10 * terms below provided that you ensure that this notice is replicated 11 * unmodified and in its entirety in all distributions of the software, 12 * modified or unmodified, in source code or in binary form. 13 * |
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2 * Copyright (c) 2002-2005 The Regents of The University of Michigan 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 --- 13 unchanged lines hidden (view full) --- 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 * Authors: Nathan Binkert 29 * Erik Hallnor 30 * Steve Reinhardt | 14 * Copyright (c) 2002-2005 The Regents of The University of Michigan 15 * All rights reserved. 16 * 17 * Redistribution and use in source and binary forms, with or without 18 * modification, are permitted provided that the following conditions are 19 * met: redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer; 21 * redistributions in binary form must reproduce the above copyright --- 13 unchanged lines hidden (view full) --- 35 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 36 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 37 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 38 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 39 * 40 * Authors: Nathan Binkert 41 * Erik Hallnor 42 * Steve Reinhardt |
43 * Andreas Sandberg |
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31 */ 32 33/* @file 34 * Serialization Interface Declarations 35 */ 36 37#ifndef __SERIALIZE_HH__ 38#define __SERIALIZE_HH__ 39 40 41#include <iostream> 42#include <list> 43#include <map> | 44 */ 45 46/* @file 47 * Serialization Interface Declarations 48 */ 49 50#ifndef __SERIALIZE_HH__ 51#define __SERIALIZE_HH__ 52 53 54#include <iostream> 55#include <list> 56#include <map> |
57#include <stack> |
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44#include <vector> 45 46#include "base/bitunion.hh" 47#include "base/types.hh" 48 49class IniFile; 50class Serializable; | 58#include <vector> 59 60#include "base/bitunion.hh" 61#include "base/types.hh" 62 63class IniFile; 64class Serializable; |
51class Checkpoint; | 65class CheckpointIn; |
52class SimObject; 53class EventQueue; 54 | 66class SimObject; 67class EventQueue; 68 |
69typedef std::ostream CheckpointOut; 70 71 |
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55/** The current version of the checkpoint format. 56 * This should be incremented by 1 and only 1 for every new version, where a new 57 * version is defined as a checkpoint created before this version won't work on 58 * the current version until the checkpoint format is updated. Adding a new 59 * SimObject shouldn't cause the version number to increase, only changes to 60 * existing objects such as serializing/unserializing more state, changing sizes 61 * of serialized arrays, etc. */ 62static const uint64_t gem5CheckpointVersion = 0x000000000000000e; 63 64template <class T> | 72/** The current version of the checkpoint format. 73 * This should be incremented by 1 and only 1 for every new version, where a new 74 * version is defined as a checkpoint created before this version won't work on 75 * the current version until the checkpoint format is updated. Adding a new 76 * SimObject shouldn't cause the version number to increase, only changes to 77 * existing objects such as serializing/unserializing more state, changing sizes 78 * of serialized arrays, etc. */ 79static const uint64_t gem5CheckpointVersion = 0x000000000000000e; 80 81template <class T> |
65void paramOut(std::ostream &os, const std::string &name, const T ¶m); | 82void paramOut(CheckpointOut &cp, const std::string &name, const T ¶m); |
66 67template <typename DataType, typename BitUnion> | 83 84template <typename DataType, typename BitUnion> |
68void paramOut(std::ostream &os, const std::string &name, | 85void paramOut(CheckpointOut &cp, const std::string &name, |
69 const BitfieldBackend::BitUnionOperators<DataType, BitUnion> &p) 70{ | 86 const BitfieldBackend::BitUnionOperators<DataType, BitUnion> &p) 87{ |
71 paramOut(os, name, p.__data); | 88 paramOut(cp, name, p.__data); |
72} 73 74template <class T> | 89} 90 91template <class T> |
75void paramIn(Checkpoint *cp, const std::string §ion, 76 const std::string &name, T ¶m); | 92void paramIn(CheckpointIn &cp, const std::string &name, T ¶m); |
77 78template <typename DataType, typename BitUnion> | 93 94template <typename DataType, typename BitUnion> |
79void paramIn(Checkpoint *cp, const std::string §ion, 80 const std::string &name, | 95void paramIn(CheckpointIn &cp, const std::string &name, |
81 BitfieldBackend::BitUnionOperators<DataType, BitUnion> &p) 82{ | 96 BitfieldBackend::BitUnionOperators<DataType, BitUnion> &p) 97{ |
83 paramIn(cp, section, name, p.__data); | 98 paramIn(cp, name, p.__data); |
84} 85 86template <class T> | 99} 100 101template <class T> |
87bool optParamIn(Checkpoint *cp, const std::string §ion, 88 const std::string &name, T ¶m); | 102bool optParamIn(CheckpointIn &cp, const std::string &name, T ¶m); |
89 90template <typename DataType, typename BitUnion> | 103 104template <typename DataType, typename BitUnion> |
91bool optParamIn(Checkpoint *cp, const std::string §ion, 92 const std::string &name, | 105bool optParamIn(CheckpointIn &cp, const std::string &name, |
93 BitfieldBackend::BitUnionOperators<DataType, BitUnion> &p) 94{ | 106 BitfieldBackend::BitUnionOperators<DataType, BitUnion> &p) 107{ |
95 return optParamIn(cp, section, name, p.__data); | 108 return optParamIn(cp, name, p.__data); |
96} 97 98template <class T> | 109} 110 111template <class T> |
99void arrayParamOut(std::ostream &os, const std::string &name, | 112void arrayParamOut(CheckpointOut &cp, const std::string &name, |
100 const T *param, unsigned size); 101 102template <class T> | 113 const T *param, unsigned size); 114 115template <class T> |
103void arrayParamOut(std::ostream &os, const std::string &name, | 116void arrayParamOut(CheckpointOut &cp, const std::string &name, |
104 const std::vector<T> ¶m); 105 106template <class T> | 117 const std::vector<T> ¶m); 118 119template <class T> |
107void arrayParamOut(std::ostream &os, const std::string &name, | 120void arrayParamOut(CheckpointOut &cp, const std::string &name, |
108 const std::list<T> ¶m); 109 110template <class T> | 121 const std::list<T> ¶m); 122 123template <class T> |
111void arrayParamIn(Checkpoint *cp, const std::string §ion, 112 const std::string &name, T *param, unsigned size); | 124void arrayParamIn(CheckpointIn &cp, const std::string &name, 125 T *param, unsigned size); |
113 114template <class T> | 126 127template <class T> |
115void arrayParamIn(Checkpoint *cp, const std::string §ion, 116 const std::string &name, std::vector<T> ¶m); | 128void arrayParamIn(CheckpointIn &cp, const std::string &name, 129 std::vector |
117 118template <class T> | 130 131template <class T> |
119void arrayParamIn(Checkpoint *cp, const std::string §ion, 120 const std::string &name, std::list<T> ¶m); | 132void arrayParamIn(CheckpointIn &cp, const std::string &name, 133 std::list |
121 122void | 134 135void |
123objParamIn(Checkpoint *cp, const std::string §ion, 124 const std::string &name, SimObject * ¶m); | 136objParamIn(CheckpointIn &cp, const std::string &name, SimObject * ¶m); |
125 126template <typename T> 127void fromInt(T &t, int i) 128{ 129 t = (T)i; 130} 131 132template <typename T> 133void fromSimObject(T &t, SimObject *s) 134{ 135 t = dynamic_cast<T>(s); 136} 137 138// 139// These macros are streamlined to use in serialize/unserialize 140// functions. It's assumed that serialize() has a parameter 'os' for 141// the ostream, and unserialize() has parameters 'cp' and 'section'. | 137 138template <typename T> 139void fromInt(T &t, int i) 140{ 141 t = (T)i; 142} 143 144template <typename T> 145void fromSimObject(T &t, SimObject *s) 146{ 147 t = dynamic_cast<T>(s); 148} 149 150// 151// These macros are streamlined to use in serialize/unserialize 152// functions. It's assumed that serialize() has a parameter 'os' for 153// the ostream, and unserialize() has parameters 'cp' and 'section'. |
142#define SERIALIZE_SCALAR(scalar) paramOut(os, #scalar, scalar) | 154#define SERIALIZE_SCALAR(scalar) paramOut(cp, #scalar, scalar) |
143 | 155 |
144#define UNSERIALIZE_SCALAR(scalar) paramIn(cp, section, #scalar, scalar) 145#define UNSERIALIZE_OPT_SCALAR(scalar) optParamIn(cp, section, #scalar, scalar) | 156#define UNSERIALIZE_SCALAR(scalar) paramIn(cp, #scalar, scalar) 157#define UNSERIALIZE_OPT_SCALAR(scalar) optParamIn(cp, #scalar, scalar) |
146 147// ENUMs are like SCALARs, but we cast them to ints on the way out | 158 159// ENUMs are like SCALARs, but we cast them to ints on the way out |
148#define SERIALIZE_ENUM(scalar) paramOut(os, #scalar, (int)scalar) | 160#define SERIALIZE_ENUM(scalar) paramOut(cp, #scalar, (int)scalar) |
149 150#define UNSERIALIZE_ENUM(scalar) \ 151 do { \ 152 int tmp; \ | 161 162#define UNSERIALIZE_ENUM(scalar) \ 163 do { \ 164 int tmp; \ |
153 paramIn(cp, section, #scalar, tmp); \ 154 fromInt(scalar, tmp); \ | 165 paramIn(cp, #scalar, tmp); \ 166 fromInt(scalar, tmp); \ |
155 } while (0) 156 157#define SERIALIZE_ARRAY(member, size) \ | 167 } while (0) 168 169#define SERIALIZE_ARRAY(member, size) \ |
158 arrayParamOut(os, #member, member, size) | 170 arrayParamOut(cp, #member, member, size) |
159 160#define UNSERIALIZE_ARRAY(member, size) \ | 171 172#define UNSERIALIZE_ARRAY(member, size) \ |
161 arrayParamIn(cp, section, #member, member, size) | 173 arrayParamIn(cp, #member, member, size) |
162 163#define SERIALIZE_CONTAINER(member) \ | 174 175#define SERIALIZE_CONTAINER(member) \ |
164 arrayParamOut(os, #member, member) | 176 arrayParamOut(cp, #member, member) |
165 166#define UNSERIALIZE_CONTAINER(member) \ | 177 178#define UNSERIALIZE_CONTAINER(member) \ |
167 arrayParamIn(cp, section, #member, member) | 179 arrayParamIn(cp, #member, member) |
168 | 180 |
169#define SERIALIZE_OBJPTR(objptr) paramOut(os, #objptr, (objptr)->name()) | 181#define SERIALIZE_OBJPTR(objptr) paramOut(cp, #objptr, (objptr)->name()) |
170 171#define UNSERIALIZE_OBJPTR(objptr) \ 172 do { \ 173 SimObject *sptr; \ | 182 183#define UNSERIALIZE_OBJPTR(objptr) \ 184 do { \ 185 SimObject *sptr; \ |
174 objParamIn(cp, section, #objptr, sptr); \ | 186 objParamIn(cp, #objptr, sptr); \ |
175 fromSimObject(objptr, sptr); \ 176 } while (0) 177 178/** 179 * Basic support for object serialization. 180 * | 187 fromSimObject(objptr, sptr); \ 188 } while (0) 189 190/** 191 * Basic support for object serialization. 192 * |
193 * Objects that support serialization should derive from this 194 * class. Such objects can largely be divided into two categories: 1) 195 * True SimObjects (deriving from SimObject), and 2) child objects 196 * (non-SimObjects). 197 * 198 * SimObjects are serialized automatically into their own sections 199 * automatically by the SimObject base class (see 200 * SimObject::serializeAll(). 201 * 202 * SimObjects can contain other serializable objects that are not 203 * SimObjects. Much like normal serialized members are not serialized 204 * automatically, these objects will not be serialized automatically 205 * and it is expected that the objects owning such serializable 206 * objects call the required serialization/unserialization methods on 207 * child objects. The preferred method to serialize a child object is 208 * to call serializeSection() on the child, which serializes the 209 * object into a new subsection in the current section. Another option 210 * is to call serialize() directly, which serializes the object into 211 * the current section. The latter is not recommended as it can lead 212 * to naming clashes between objects. 213 * |
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181 * @note Many objects that support serialization need to be put in a 182 * consistent state when serialization takes place. We refer to the 183 * action of forcing an object into a consistent state as 184 * 'draining'. Objects that need draining inherit from Drainable. See 185 * Drainable for more information. 186 */ 187class Serializable 188{ 189 protected: | 214 * @note Many objects that support serialization need to be put in a 215 * consistent state when serialization takes place. We refer to the 216 * action of forcing an object into a consistent state as 217 * 'draining'. Objects that need draining inherit from Drainable. See 218 * Drainable for more information. 219 */ 220class Serializable 221{ 222 protected: |
190 void nameOut(std::ostream &os); 191 void nameOut(std::ostream &os, const std::string &_name); | 223 /** 224 * Scoped checkpoint section helper class 225 * 226 * This helper class creates a section within a checkpoint without 227 * the need for a separate serializeable object. It is mainly used 228 * within the Serializable class when serializing or unserializing 229 * section (see serializeSection() and unserializeSection()). It 230 * can also be used to maintain backwards compatibility in 231 * existing code that serializes structs that are not inheriting 232 * from Serializable into subsections. 233 * 234 * When the class is instantiated, it appends a name to the active 235 * path in a checkpoint. The old path is later restored when the 236 * instance is destroyed. For example, serializeSection() could be 237 * implemented by instantiating a ScopedCheckpointSection and then 238 * calling serialize() on an object. 239 */ 240 class ScopedCheckpointSection { 241 public: 242 template<class CP> 243 ScopedCheckpointSection(CP &cp, const char *name) { 244 pushName(name); 245 nameOut(cp); 246 } |
192 | 247 |
248 template<class CP> 249 ScopedCheckpointSection(CP &cp, const std::string &name) { 250 pushName(name.c_str()); 251 nameOut(cp); 252 } 253 254 ~ScopedCheckpointSection(); 255 256 ScopedCheckpointSection() = delete; 257 ScopedCheckpointSection(const ScopedCheckpointSection &) = delete; 258 ScopedCheckpointSection &operator=( 259 const ScopedCheckpointSection &) = delete; 260 ScopedCheckpointSection &operator=( 261 ScopedCheckpointSection &&) = delete; 262 263 private: 264 void pushName(const char *name); 265 void nameOut(CheckpointOut &cp); 266 void nameOut(CheckpointIn &cp) {}; 267 }; 268 |
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193 public: 194 Serializable(); 195 virtual ~Serializable(); 196 | 269 public: 270 Serializable(); 271 virtual ~Serializable(); 272 |
197 // manditory virtual function, so objects must provide names 198 virtual const std::string name() const = 0; | 273 /** 274 * Serialize an object 275 * 276 * Output an object's state into the current checkpoint section. 277 * 278 * @param cp Checkpoint state 279 */ 280 virtual void serialize(CheckpointOut &cp) const = 0; |
199 | 281 |
200 virtual void serialize(std::ostream &os); 201 virtual void unserialize(Checkpoint *cp, const std::string §ion); | 282 /** 283 * Unserialize an object 284 * 285 * Read an object's state from the current checkpoint section. 286 * 287 * @param cp Checkpoint state 288 */ 289 virtual void unserialize(CheckpointIn &cp) = 0; |
202 | 290 |
203 static Serializable *create(Checkpoint *cp, const std::string §ion); | 291 /** 292 * Serialize an object into a new section 293 * 294 * This method creates a new section in a checkpoint and calls 295 * serialize() to serialize the current object into that 296 * section. The name of the section is appended to the current 297 * checkpoint path. 298 * 299 * @param cp Checkpoint state 300 * @param name Name to append to the active path 301 */ 302 void serializeSection(CheckpointOut &cp, const char *name) const; |
204 | 303 |
304 void serializeSection(CheckpointOut &cp, const std::string &name) const { 305 serializeSection(cp, name.c_str()); 306 } 307 308 /** 309 * Unserialize an a child object 310 * 311 * This method loads a child object from a checkpoint. The object 312 * name is appended to the active path to form a fully qualified 313 * section name and unserialize() is called. 314 * 315 * @param cp Checkpoint state 316 * @param name Name to append to the active path 317 */ 318 void unserializeSection(CheckpointIn &cp, const char *name); 319 320 void unserializeSection(CheckpointIn &cp, const std::string &name) { 321 unserializeSection(cp, name.c_str()); 322 } 323 324 /** 325 * @{ 326 * @name Legacy interface 327 * 328 * Interface for objects that insist on changing their state when 329 * serializing. Such state change should be done in drain(), 330 * memWriteback(), or memInvalidate() and not in the serialization 331 * method. In general, if state changes occur in serialize, it 332 * complicates testing since it breaks assumptions about draining 333 * and serialization. It potentially also makes components more 334 * fragile since they there are no ordering guarantees when 335 * serializing SimObjects. 336 * 337 * @warn This interface is considered deprecated and should never 338 * be used. 339 */ 340 341 virtual void serializeOld(CheckpointOut &cp) { 342 serialize(cp); 343 } 344 void serializeSectionOld(CheckpointOut &cp, const char *name); 345 void serializeSectionOld(CheckpointOut &cp, const std::string &name) { 346 serializeSectionOld(cp, name.c_str()); 347 } 348 /** @} */ 349 350 /** Get the fully-qualified name of the active section */ 351 static const std::string ¤tSection(); 352 353 static Serializable *create(CheckpointIn &cp, const std::string §ion); 354 |
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205 static int ckptCount; 206 static int ckptMaxCount; 207 static int ckptPrevCount; 208 static void serializeAll(const std::string &cpt_dir); | 355 static int ckptCount; 356 static int ckptMaxCount; 357 static int ckptPrevCount; 358 static void serializeAll(const std::string &cpt_dir); |
209 static void unserializeGlobals(Checkpoint *cp); | 359 static void unserializeGlobals(CheckpointIn &cp); 360 361 private: 362 static std::stack<std::string> path; |
210}; 211 212void debug_serialize(const std::string &cpt_dir); 213 214// 215// A SerializableBuilder serves as an evaluation context for a set of 216// parameters that describe a specific instance of a Serializable. This 217// evaluation context corresponds to a section in the .ini file (as --- 35 unchanged lines hidden (view full) --- 253 public: 254 255 // Type CreateFunc is a pointer to a function that creates a new 256 // simulation object builder based on a .ini-file parameter 257 // section (specified by the first string argument), a unique name 258 // for the object (specified by the second string argument), and 259 // an optional config hierarchy node (specified by the third 260 // argument). A pointer to the new SerializableBuilder is returned. | 363}; 364 365void debug_serialize(const std::string &cpt_dir); 366 367// 368// A SerializableBuilder serves as an evaluation context for a set of 369// parameters that describe a specific instance of a Serializable. This 370// evaluation context corresponds to a section in the .ini file (as --- 35 unchanged lines hidden (view full) --- 406 public: 407 408 // Type CreateFunc is a pointer to a function that creates a new 409 // simulation object builder based on a .ini-file parameter 410 // section (specified by the first string argument), a unique name 411 // for the object (specified by the second string argument), and 412 // an optional config hierarchy node (specified by the third 413 // argument). A pointer to the new SerializableBuilder is returned. |
261 typedef Serializable *(*CreateFunc)(Checkpoint *cp, | 414 typedef Serializable *(*CreateFunc)(CheckpointIn &cp, |
262 const std::string §ion); 263 264 static std::map<std::string,CreateFunc> *classMap; 265 266 // Constructor. For example: 267 // 268 // SerializableClass baseCacheSerializableClass("BaseCacheSerializable", 269 // newBaseCacheSerializableBuilder); 270 // 271 SerializableClass(const std::string &className, CreateFunc createFunc); 272 273 // create Serializable given name of class and pointer to 274 // configuration hierarchy node | 415 const std::string §ion); 416 417 static std::map<std::string,CreateFunc> *classMap; 418 419 // Constructor. For example: 420 // 421 // SerializableClass baseCacheSerializableClass("BaseCacheSerializable", 422 // newBaseCacheSerializableBuilder); 423 // 424 SerializableClass(const std::string &className, CreateFunc createFunc); 425 426 // create Serializable given name of class and pointer to 427 // configuration hierarchy node |
275 static Serializable *createObject(Checkpoint *cp, | 428 static Serializable *createObject(CheckpointIn &cp, |
276 const std::string §ion); 277}; 278 279// 280// Macros to encapsulate the magic of declaring & defining 281// SerializableBuilder and SerializableClass objects 282// 283 --- 8 unchanged lines hidden (view full) --- 292{ 293 public: 294 virtual ~SimObjectResolver() { } 295 296 // Find a SimObject given a full path name 297 virtual SimObject *resolveSimObject(const std::string &name) = 0; 298}; 299 | 429 const std::string §ion); 430}; 431 432// 433// Macros to encapsulate the magic of declaring & defining 434// SerializableBuilder and SerializableClass objects 435// 436 --- 8 unchanged lines hidden (view full) --- 445{ 446 public: 447 virtual ~SimObjectResolver() { } 448 449 // Find a SimObject given a full path name 450 virtual SimObject *resolveSimObject(const std::string &name) = 0; 451}; 452 |
300class Checkpoint | 453class CheckpointIn |
301{ 302 private: 303 304 IniFile *db; 305 306 SimObjectResolver &objNameResolver; 307 308 public: | 454{ 455 private: 456 457 IniFile *db; 458 459 SimObjectResolver &objNameResolver; 460 461 public: |
309 Checkpoint(const std::string &cpt_dir, SimObjectResolver &resolver); 310 ~Checkpoint(); | 462 CheckpointIn(const std::string &cpt_dir, SimObjectResolver &resolver); 463 ~CheckpointIn(); |
311 312 const std::string cptDir; 313 314 bool find(const std::string §ion, const std::string &entry, 315 std::string &value); 316 317 bool findObj(const std::string §ion, const std::string &entry, 318 SimObject *&value); --- 31 unchanged lines hidden --- | 464 465 const std::string cptDir; 466 467 bool find(const std::string §ion, const std::string &entry, 468 std::string &value); 469 470 bool findObj(const std::string §ion, const std::string &entry, 471 SimObject *&value); --- 31 unchanged lines hidden --- |