diff options
Diffstat (limited to 'src/sim/serialize.cc')
| -rw-r--r-- | src/sim/serialize.cc | 118 |
1 files changed, 115 insertions, 3 deletions
diff --git a/src/sim/serialize.cc b/src/sim/serialize.cc index 3127d9a04..f9a945b95 100644 --- a/src/sim/serialize.cc +++ b/src/sim/serialize.cc @@ -212,6 +212,24 @@ arrayParamOut(CheckpointOut &os, const string &name, const list<T> ¶m) template <class T> void +arrayParamOut(CheckpointOut &os, const string &name, const set<T> ¶m) +{ + typename set<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(CheckpointIn &cp, const string &name, T ¶m) { const string §ion(Serializable::currentSection()); @@ -223,12 +241,13 @@ paramIn(CheckpointIn &cp, const string &name, T ¶m) template <class T> bool -optParamIn(CheckpointIn &cp, const string &name, T ¶m) +optParamIn(CheckpointIn &cp, const string &name, T ¶m, bool warn) { const string §ion(Serializable::currentSection()); string str; if (!cp.find(section, name, str) || !parseParam(str, param)) { - warn("optional parameter %s:%s not present\n", section, name); + if (warn) + warn("optional parameter %s:%s not present\n", section, name); return false; } else { return true; @@ -367,6 +386,36 @@ arrayParamIn(CheckpointIn &cp, const string &name, list<T> ¶m) } } +template <class T> +void +arrayParamIn(CheckpointIn &cp, const string &name, set<T> ¶m) +{ + const string §ion(Serializable::currentSection()); + 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; + if (!parseParam(tokens[i], scalar_value)) { + string err("could not parse \""); + + err += str; + err += "\""; + + fatal(err); + } + + // assign parsed value to vector + param.insert(scalar_value); + } +} + void objParamIn(CheckpointIn &cp, const string &name, SimObject * ¶m) @@ -384,7 +433,8 @@ objParamIn(CheckpointIn &cp, const string &name, SimObject * ¶m) template void \ paramIn(CheckpointIn &cp, const string &name, type & param); \ template bool \ - optParamIn(CheckpointIn &cp, const string &name, type & param); \ + optParamIn(CheckpointIn &cp, const string &name, type & param, \ + bool warn); \ template void \ arrayParamOut(CheckpointOut &os, const string &name, \ type const *param, unsigned size); \ @@ -421,6 +471,11 @@ INSTANTIATE_PARAM_TEMPLATES(double) INSTANTIATE_PARAM_TEMPLATES(string) INSTANTIATE_PARAM_TEMPLATES(Pixel) +// set is only used with strings and furthermore doesn't agree with Pixel +template void +arrayParamOut(CheckpointOut &, const string &, const set<string> &); +template void +arrayParamIn(CheckpointIn &, const string &, set<string> &); ///////////////////////////// @@ -441,16 +496,73 @@ class Globals : public Serializable /// The one and only instance of the Globals class. Globals globals; +/// The version tags for this build of the simulator, to be stored in the +/// Globals section during serialization and compared upon unserialization. +extern std::set<std::string> version_tags; + void Globals::serialize(CheckpointOut &cp) const { paramOut(cp, "curTick", curTick()); + SERIALIZE_CONTAINER(version_tags); } void Globals::unserialize(CheckpointIn &cp) { paramIn(cp, "curTick", unserializedCurTick); + + const std::string §ion(Serializable::currentSection()); + std::string str; + if (!cp.find(section, "version_tags", str)) { + warn("**********************************************************\n"); + warn("!!!! Checkpoint uses an old versioning scheme. !!!!\n"); + warn("Run the checkpoint upgrader (util/cpt_upgrader.py) on your " + "checkpoint\n"); + warn("**********************************************************\n"); + return; + } + + std::set<std::string> cpt_tags; + arrayParamIn(cp, "version_tags", cpt_tags); // UNSERIALIZE_CONTAINER + + bool err = false; + for (const auto& t : version_tags) { + if (cpt_tags.find(t) == cpt_tags.end()) { + // checkpoint is missing tag that this binary has + if (!err) { + warn("*****************************************************\n"); + warn("!!!! Checkpoint is missing the following version tags:\n"); + err = true; + } + warn(" %s\n", t); + } + } + if (err) { + warn("You might experience some issues when restoring and should run " + "the checkpoint upgrader (util/cpt_upgrader.py) on your " + "checkpoint\n"); + warn("**********************************************************\n"); + } + + err = false; + for (const auto& t : cpt_tags) { + if (version_tags.find(t) == version_tags.end()) { + // gem5 binary is missing tag that this checkpoint has + if (!err) { + warn("*****************************************************\n"); + warn("!!!! gem5 is missing the following version tags:\n"); + err = true; + } + warn(" %s\n", t); + } + } + if (err) { + warn("Running a checkpoint with incompatible version tags is not " + "supported. While it might work, you may experience incorrect " + "behavior or crashes.\n"); + warn("**********************************************************\n"); + } } Serializable::Serializable() |