sim/serialize.cc: sim/serialize.hh: export the checkpoint directory --HG-- extra : convert_revision : ba5b796fd930ab0487a502beefcf76bd6bb7c366
240 lines
8.2 KiB
C++
240 lines
8.2 KiB
C++
/*
|
|
* Copyright (c) 2002-2004 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.
|
|
*/
|
|
|
|
/* @file
|
|
* Serialization Interface Declarations
|
|
*/
|
|
|
|
#ifndef __SERIALIZE_HH__
|
|
#define __SERIALIZE_HH__
|
|
|
|
|
|
#include <list>
|
|
#include <iostream>
|
|
#include <map>
|
|
|
|
#include "sim/host.hh"
|
|
#include "sim/configfile.hh"
|
|
|
|
class Serializable;
|
|
class Checkpoint;
|
|
|
|
template <class T>
|
|
void paramOut(std::ostream &os, const std::string &name, const T ¶m);
|
|
|
|
template <class T>
|
|
void paramIn(Checkpoint *cp, const std::string §ion,
|
|
const std::string &name, T ¶m);
|
|
|
|
template <class T>
|
|
void arrayParamOut(std::ostream &os, const std::string &name,
|
|
const T *param, int size);
|
|
|
|
template <class T>
|
|
void arrayParamIn(Checkpoint *cp, const std::string §ion,
|
|
const std::string &name, T *param, int size);
|
|
|
|
void
|
|
objParamIn(Checkpoint *cp, const std::string §ion,
|
|
const std::string &name, Serializable * ¶m);
|
|
|
|
|
|
//
|
|
// These macros are streamlined to use in serialize/unserialize
|
|
// functions. It's assumed that serialize() has a parameter 'os' for
|
|
// the ostream, and unserialize() has parameters 'cp' and 'section'.
|
|
#define SERIALIZE_SCALAR(scalar) paramOut(os, #scalar, scalar)
|
|
|
|
#define UNSERIALIZE_SCALAR(scalar) paramIn(cp, section, #scalar, scalar)
|
|
|
|
// ENUMs are like SCALARs, but we cast them to ints on the way out
|
|
#define SERIALIZE_ENUM(scalar) paramOut(os, #scalar, (int)scalar)
|
|
|
|
#define UNSERIALIZE_ENUM(scalar) \
|
|
do { \
|
|
int tmp; \
|
|
paramIn(cp, section, #scalar, tmp); \
|
|
scalar = (typeof(scalar))tmp; \
|
|
} while (0)
|
|
|
|
#define SERIALIZE_ARRAY(member, size) \
|
|
arrayParamOut(os, #member, member, size)
|
|
|
|
#define UNSERIALIZE_ARRAY(member, size) \
|
|
arrayParamIn(cp, section, #member, member, size)
|
|
|
|
#define SERIALIZE_OBJPTR(objptr) paramOut(os, #objptr, (objptr)->name())
|
|
|
|
#define UNSERIALIZE_OBJPTR(objptr) \
|
|
do { \
|
|
Serializable *sptr; \
|
|
objParamIn(cp, section, #objptr, sptr); \
|
|
objptr = dynamic_cast<typeof(objptr)>(sptr); \
|
|
} while (0)
|
|
|
|
/*
|
|
* Basic support for object serialization.
|
|
*/
|
|
class Serializable
|
|
{
|
|
protected:
|
|
void nameOut(std::ostream &os);
|
|
void nameOut(std::ostream &os, const std::string &_name);
|
|
|
|
public:
|
|
Serializable() {}
|
|
virtual ~Serializable() {}
|
|
|
|
// manditory virtual function, so objects must provide names
|
|
virtual const std::string name() const = 0;
|
|
|
|
virtual void serialize(std::ostream &os) {}
|
|
virtual void unserialize(Checkpoint *cp, const std::string §ion) {}
|
|
|
|
static Serializable *create(Checkpoint *cp,
|
|
const std::string §ion);
|
|
|
|
static void serializeAll();
|
|
static void unserializeGlobals(Checkpoint *cp);
|
|
};
|
|
|
|
//
|
|
// A SerializableBuilder serves as an evaluation context for a set of
|
|
// parameters that describe a specific instance of a Serializable. 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
|
|
// Serializable references. SerializableBuilder is an abstract superclass;
|
|
// derived classes specialize the class for particular subclasses of
|
|
// Serializable (e.g., BaseCache).
|
|
//
|
|
// For typical usage, see the definition of
|
|
// SerializableClass::createObject().
|
|
//
|
|
class SerializableBuilder
|
|
{
|
|
public:
|
|
|
|
SerializableBuilder() {}
|
|
|
|
virtual ~SerializableBuilder() {}
|
|
|
|
// Create the actual Serializable 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 Serializable.
|
|
virtual Serializable *create() = 0;
|
|
};
|
|
|
|
//
|
|
// An instance of SerializableClass corresponds to a class derived from
|
|
// Serializable. The SerializableClass 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 SerializableClass
|
|
{
|
|
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 SerializableBuilder is returned.
|
|
typedef Serializable *(*CreateFunc)(Checkpoint *cp,
|
|
const std::string §ion);
|
|
|
|
static std::map<std::string,CreateFunc> *classMap;
|
|
|
|
// Constructor. For example:
|
|
//
|
|
// SerializableClass baseCacheSerializableClass("BaseCacheSerializable",
|
|
// newBaseCacheSerializableBuilder);
|
|
//
|
|
SerializableClass(const std::string &className, CreateFunc createFunc);
|
|
|
|
// create Serializable given name of class and pointer to
|
|
// configuration hierarchy node
|
|
static Serializable *createObject(Checkpoint *cp,
|
|
const std::string §ion);
|
|
};
|
|
|
|
//
|
|
// Macros to encapsulate the magic of declaring & defining
|
|
// SerializableBuilder and SerializableClass objects
|
|
//
|
|
|
|
#define REGISTER_SERIALIZEABLE(CLASS_NAME, OBJ_CLASS) \
|
|
SerializableClass the##OBJ_CLASS##Class(CLASS_NAME, \
|
|
OBJ_CLASS::createForUnserialize);
|
|
|
|
class Checkpoint
|
|
{
|
|
private:
|
|
|
|
IniFile *db;
|
|
const std::string basePath;
|
|
const ConfigNode *configNode;
|
|
std::map<std::string, Serializable*> objMap;
|
|
|
|
public:
|
|
Checkpoint(const std::string &cpt_dir, const std::string &path,
|
|
const ConfigNode *_configNode);
|
|
|
|
const std::string cptDir;
|
|
|
|
bool find(const std::string §ion, const std::string &entry,
|
|
std::string &value);
|
|
|
|
bool findObj(const std::string §ion, const std::string &entry,
|
|
Serializable *&value);
|
|
|
|
bool sectionExists(const std::string §ion);
|
|
|
|
// The following static functions have to do with checkpoint
|
|
// creation rather than restoration. This class makes a handy
|
|
// namespace for them though.
|
|
|
|
// Export current checkpoint directory name so other objects can
|
|
// derive filenames from it (e.g., memory). The return value is
|
|
// guaranteed to end in '/' so filenames can be directly appended.
|
|
// This function is only valid while a checkpoint is being created.
|
|
static std::string dir();
|
|
|
|
// Filename for base checkpoint file within directory.
|
|
static const char *baseFilename;
|
|
|
|
// Set up a checkpoint creation event or series of events.
|
|
static void setup(Tick when, Tick period = 0);
|
|
};
|
|
|
|
#endif // __SERIALIZE_HH__
|