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Adding gem5 source to svn.

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git-svn-id: https://www4.informatik.uni-erlangen.de/i4svn/danceos/trunk/devel/fail@1819 8c4709b5-6ec9-48aa-a5cd-a96041d1645a
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friemel
2012-10-24 19:18:57 +00:00
parent f7ff71bd46
commit b41eec3f65
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simulators/gem5/src/sim/serialize.cc Normal file
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/*
* Copyright (c) 2002-2005 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.
*
* Authors: Nathan Binkert
* Erik Hallnor
* Steve Reinhardt
*/
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/types.h>
#include <cerrno>
#include <fstream>
#include <list>
#include <string>
#include <vector>
#include "base/inifile.hh"
#include "base/misc.hh"
#include "base/output.hh"
#include "base/str.hh"
#include "base/trace.hh"
#include "sim/eventq.hh"
#include "sim/serialize.hh"
#include "sim/sim_events.hh"
#include "sim/sim_exit.hh"
#include "sim/sim_object.hh"
// For stat reset hack
#include "sim/stat_control.hh"
using namespace std;
extern SimObject *resolveSimObject(const string &);
//
// The base implementations use to_number for parsing and '<<' for
// displaying, suitable for integer types.
//
template <class T>
bool
parseParam(const string &s, T &value)
{
return to_number(s, value);
}
template <class T>
void
showParam(ostream &os, const T &value)
{
os << value;
}
//
// Template specializations:
// - char (8-bit integer)
// - floating-point types
// - bool
// - string
//
// Treat 8-bit ints (chars) as ints on output, not as chars
template <>
void
showParam(ostream &os, const char &value)
{
os << (int)value;
}
template <>
void
showParam(ostream &os, const signed char &value)
{
os << (int)value;
}
template <>
void
showParam(ostream &os, const unsigned char &value)
{
os << (unsigned int)value;
}
// Use sscanf() for FP types as to_number() only handles integers
template <>
bool
parseParam(const string &s, float &value)
{
return (sscanf(s.c_str(), "%f", &value) == 1);
}
template <>
bool
parseParam(const string &s, double &value)
{
return (sscanf(s.c_str(), "%lf", &value) == 1);
}
template <>
bool
parseParam(const string &s, bool &value)
{
const string &ls = to_lower(s);
if (ls == "true") {
value = true;
return true;
}
if (ls == "false") {
value = false;
return true;
}
return false;
}
// Display bools as strings
template <>
void
showParam(ostream &os, const bool &value)
{
os << (value ? "true" : "false");
}
// String requires no processing to speak of
template <>
bool
parseParam(const string &s, string &value)
{
value = s;
return true;
}
int Serializable::ckptMaxCount = 0;
int Serializable::ckptCount = 0;
int Serializable::ckptPrevCount = -1;
void
Serializable::nameOut(ostream &os)
{
os << "\n[" << name() << "]\n";
}
void
Serializable::nameOut(ostream &os, const string &_name)
{
os << "\n[" << _name << "]\n";
}
template <class T>
void
paramOut(ostream &os, const string &name, const T &param)
{
os << name << "=";
showParam(os, param);
os << "\n";
}
template <class T>
void
arrayParamOut(ostream &os, const string &name, const vector<T> &param)
{
typename vector<T>::size_type size = param.size();
os << name << "=";
if (size > 0)
showParam(os, param[0]);
for (typename vector<T>::size_type i = 1; i < size; ++i) {
os << " ";
showParam(os, param[i]);
}
os << "\n";
}
template <class T>
void
arrayParamOut(ostream &os, const string &name, const list<T> &param)
{
typename list<T>::const_iterator it = param.begin();
os << name << "=";
if (param.size() > 0)
showParam(os, *it);
it++;
while (it != param.end()) {
os << " ";
showParam(os, *it);
it++;
}
os << "\n";
}
template <class T>
void
paramIn(Checkpoint *cp, const string &section, const string &name, T &param)
{
string str;
if (!cp->find(section, name, str) || !parseParam(str, param)) {
fatal("Can't unserialize '%s:%s'\n", section, name);
}
}
template <class T>
bool
optParamIn(Checkpoint *cp, const string &section, const string &name, T &param)
{
string str;
if (!cp->find(section, name, str) || !parseParam(str, param)) {
warn("optional parameter %s:%s not present\n", section, name);
return false;
} else {
return true;
}
}
template <class T>
void
arrayParamOut(ostream &os, const string &name, const T *param, unsigned size)
{
os << name << "=";
if (size > 0)
showParam(os, param[0]);
for (unsigned i = 1; i < size; ++i) {
os << " ";
showParam(os, param[i]);
}
os << "\n";
}
template <class T>
void
arrayParamIn(Checkpoint *cp, const string &section, const string &name,
T *param, unsigned size)
{
string str;
if (!cp->find(section, name, str)) {
fatal("Can't unserialize '%s:%s'\n", section, name);
}
// code below stolen from VectorParam<T>::parse().
// it would be nice to unify these somehow...
vector<string> tokens;
tokenize(tokens, str, ' ');
// Need this if we were doing a vector
// value.resize(tokens.size());
if (tokens.size() != size) {
fatal("Array size mismatch on %s:%s'\n", section, name);
}
for (vector<string>::size_type i = 0; i < tokens.size(); i++) {
// need to parse into local variable to handle vector<bool>,
// for which operator[] returns a special reference class
// that's not the same as 'bool&', (since it's a packed
// vector)
T scalar_value = 0;
if (!parseParam(tokens[i], scalar_value)) {
string err("could not parse \"");
err += str;
err += "\"";
fatal(err);
}
// assign parsed value to vector
param[i] = scalar_value;
}
}
template <class T>
void
arrayParamIn(Checkpoint *cp, const string &section,
const string &name, vector<T> &param)
{
string str;
if (!cp->find(section, name, str)) {
fatal("Can't unserialize '%s:%s'\n", section, name);
}
// code below stolen from VectorParam<T>::parse().
// it would be nice to unify these somehow...
vector<string> tokens;
tokenize(tokens, str, ' ');
// Need this if we were doing a vector
// value.resize(tokens.size());
param.resize(tokens.size());
for (vector<string>::size_type i = 0; i < tokens.size(); i++) {
// need to parse into local variable to handle vector<bool>,
// for which operator[] returns a special reference class
// that's not the same as 'bool&', (since it's a packed
// vector)
T scalar_value = 0;
if (!parseParam(tokens[i], scalar_value)) {
string err("could not parse \"");
err += str;
err += "\"";
fatal(err);
}
// assign parsed value to vector
param[i] = scalar_value;
}
}
template <class T>
void
arrayParamIn(Checkpoint *cp, const string &section,
const string &name, list<T> &param)
{
string str;
if (!cp->find(section, name, str)) {
fatal("Can't unserialize '%s:%s'\n", section, name);
}
param.clear();
vector<string> tokens;
tokenize(tokens, str, ' ');
for (vector<string>::size_type i = 0; i < tokens.size(); i++) {
T scalar_value = 0;
if (!parseParam(tokens[i], scalar_value)) {
string err("could not parse \"");
err += str;
err += "\"";
fatal(err);
}
// assign parsed value to vector
param.push_back(scalar_value);
}
}
void
objParamIn(Checkpoint *cp, const string &section,
const string &name, SimObject * &param)
{
if (!cp->findObj(section, name, param)) {
fatal("Can't unserialize '%s:%s'\n", section, name);
}
}
#define INSTANTIATE_PARAM_TEMPLATES(type) \
template void \
paramOut(ostream &os, const string &name, type const &param); \
template void \
paramIn(Checkpoint *cp, const string &section, \
const string &name, type & param); \
template bool \
optParamIn(Checkpoint *cp, const string &section, \
const string &name, type & param); \
template void \
arrayParamOut(ostream &os, const string &name, \
type const *param, unsigned size); \
template void \
arrayParamIn(Checkpoint *cp, const string &section, \
const string &name, type *param, unsigned size); \
template void \
arrayParamOut(ostream &os, const string &name, \
const vector<type> &param); \
template void \
arrayParamIn(Checkpoint *cp, const string &section, \
const string &name, vector<type> &param); \
template void \
arrayParamOut(ostream &os, const string &name, \
const list<type> &param); \
template void \
arrayParamIn(Checkpoint *cp, const string &section, \
const string &name, list<type> &param);
INSTANTIATE_PARAM_TEMPLATES(char)
INSTANTIATE_PARAM_TEMPLATES(signed char)
INSTANTIATE_PARAM_TEMPLATES(unsigned char)
INSTANTIATE_PARAM_TEMPLATES(signed short)
INSTANTIATE_PARAM_TEMPLATES(unsigned short)
INSTANTIATE_PARAM_TEMPLATES(signed int)
INSTANTIATE_PARAM_TEMPLATES(unsigned int)
INSTANTIATE_PARAM_TEMPLATES(signed long)
INSTANTIATE_PARAM_TEMPLATES(unsigned long)
INSTANTIATE_PARAM_TEMPLATES(signed long long)
INSTANTIATE_PARAM_TEMPLATES(unsigned long long)
INSTANTIATE_PARAM_TEMPLATES(bool)
INSTANTIATE_PARAM_TEMPLATES(float)
INSTANTIATE_PARAM_TEMPLATES(double)
INSTANTIATE_PARAM_TEMPLATES(string)
/////////////////////////////
/// Container for serializing global variables (not associated with
/// any serialized object).
class Globals : public Serializable
{
public:
const string name() const;
void serialize(ostream &os);
void unserialize(Checkpoint *cp, const std::string &section);
};
/// The one and only instance of the Globals class.
Globals globals;
const string
Globals::name() const
{
return "Globals";
}
void
Globals::serialize(ostream &os)
{
nameOut(os);
paramOut(os, "curTick", curTick());
nameOut(os, "MainEventQueue");
mainEventQueue.serialize(os);
}
void
Globals::unserialize(Checkpoint *cp, const std::string &section)
{
Tick tick;
paramIn(cp, section, "curTick", tick);
curTick(tick);
mainEventQueue.unserialize(cp, "MainEventQueue");
}
Serializable::Serializable()
{
}
Serializable::~Serializable()
{
}
void
Serializable::serialize(ostream &os)
{
}
void
Serializable::unserialize(Checkpoint *cp, const string &section)
{
}
void
Serializable::serializeAll(const string &cpt_dir)
{
string dir = Checkpoint::setDir(cpt_dir);
if (mkdir(dir.c_str(), 0775) == -1 && errno != EEXIST)
fatal("couldn't mkdir %s\n", dir);
string cpt_file = dir + Checkpoint::baseFilename;
ofstream outstream(cpt_file.c_str());
time_t t = time(NULL);
if (!outstream.is_open())
fatal("Unable to open file %s for writing\n", cpt_file.c_str());
outstream << "## checkpoint generated: " << ctime(&t);
globals.serialize(outstream);
SimObject::serializeAll(outstream);
}
void
Serializable::unserializeGlobals(Checkpoint *cp)
{
globals.unserialize(cp, globals.name());
}
void
debug_serialize(const string &cpt_dir)
{
Serializable::serializeAll(cpt_dir);
}
////////////////////////////////////////////////////////////////////////
//
// SerializableClass member definitions
//
////////////////////////////////////////////////////////////////////////
// Map of class names to SerializableBuilder creation functions.
// Need to make this a pointer so we can force initialization on the
// first reference; otherwise, some SerializableClass constructors
// may be invoked before the classMap constructor.
map<string, SerializableClass::CreateFunc> *SerializableClass::classMap = 0;
// SerializableClass constructor: add mapping to classMap
SerializableClass::SerializableClass(const string &className,
CreateFunc createFunc)
{
if (classMap == NULL)
classMap = new map<string, SerializableClass::CreateFunc>();
if ((*classMap)[className])
fatal("Error: simulation object class %s redefined\n", className);
// add className --> createFunc to class map
(*classMap)[className] = createFunc;
}
//
//
Serializable *
SerializableClass::createObject(Checkpoint *cp, const string &section)
{
string className;
if (!cp->find(section, "type", className)) {
fatal("Serializable::create: no 'type' entry in section '%s'.\n",
section);
}
CreateFunc createFunc = (*classMap)[className];
if (createFunc == NULL) {
fatal("Serializable::create: no create function for class '%s'.\n",
className);
}
Serializable *object = createFunc(cp, section);
assert(object != NULL);
return object;
}
Serializable *
Serializable::create(Checkpoint *cp, const string &section)
{
Serializable *object = SerializableClass::createObject(cp, section);
object->unserialize(cp, section);
return object;
}
const char *Checkpoint::baseFilename = "m5.cpt";
string Checkpoint::currentDirectory;
string
Checkpoint::setDir(const string &name)
{
// use csprintf to insert curTick() into directory name if it
// appears to have a format placeholder in it.
currentDirectory = (name.find("%") != string::npos) ?
csprintf(name, curTick()) : name;
if (currentDirectory[currentDirectory.size() - 1] != '/')
currentDirectory += "/";
return currentDirectory;
}
string
Checkpoint::dir()
{
return currentDirectory;
}
Checkpoint::Checkpoint(const string &cpt_dir)
: db(new IniFile), cptDir(setDir(cpt_dir))
{
string filename = cptDir + "/" + Checkpoint::baseFilename;
if (!db->load(filename)) {
fatal("Can't load checkpoint file '%s'\n", filename);
}
}
bool
Checkpoint::find(const string &section, const string &entry, string &value)
{
return db->find(section, entry, value);
}
bool
Checkpoint::findObj(const string &section, const string &entry,
SimObject *&value)
{
string path;
if (!db->find(section, entry, path))
return false;
value = resolveSimObject(path);
return true;
}
bool
Checkpoint::sectionExists(const string &section)
{
return db->sectionExists(section);
}