statistics.cc

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#include "base/statistics.hh"
 
#include <cassert>
#include <list>
#include <map>
#include <string>
#include <utility>
 
#include "base/callback.hh"
#include "base/logging.hh"
#include "sim/root.hh"
 
namespace gem5
{
 
namespace statistics
{
 
// We wrap these in a function to make sure they're built in time.
std::list<Info *> &
statsList()
{
    static std::list<Info *> the_list;
    return the_list;
}
 
MapType &
statsMap()
{
    static MapType the_map;
    return the_map;
}
 
void
InfoAccess::setInfo(Group *parent, Info *info)
{
    panic_if(statsMap().find(this) != statsMap().end() ||
             _info != nullptr,
             "shouldn't register stat twice!");
 
    // New-style stats are reachable through the hierarchy and
    // shouldn't be added to the global lists.
    if (parent) {
        _info = info;
        return;
    }
 
    statsList().push_back(info);
 
#ifndef NDEBUG
    std::pair<MapType::iterator, bool> result =
#endif
        statsMap().insert(std::make_pair(this, info));
    assert(result.second && "this should never fail");
    assert(statsMap().find(this) != statsMap().end());
}
 
void
InfoAccess::setParams(const StorageParams *params)
{
    info()->setStorageParams(params);
}
 
void
InfoAccess::setInit()
{
    info()->flags.set(init);
}
 
Info *
InfoAccess::info()
{
    if (newStyleStats()) {
        // New-style stats
        return _info;
    } else {
        // Legacy stats
        MapType::const_iterator i = statsMap().find(this);
        assert(i != statsMap().end());
        return (*i).second;
    }
}
 
const Info *
InfoAccess::info() const
{
    if (newStyleStats()) {
        // New-style stats
        return _info;
    } else {
        // Legacy stats
        MapType::const_iterator i = statsMap().find(this);
        assert(i != statsMap().end());
        return (*i).second;
    }
}
 
bool
InfoAccess::newStyleStats() const
{
    return _info != nullptr;
}
 
Formula::Formula(Group *parent, const char *name, const char *desc)
    : DataWrapVec<Formula, FormulaInfoProxy>(
            parent, name, units::Unspecified::get(), desc)
 
{
}
 
Formula::Formula(Group *parent, const char *name, const units::Base *unit,
                 const char *desc)
    : DataWrapVec<Formula, FormulaInfoProxy>(parent, name, unit, desc)
{
}
 
Formula::Formula(Group *parent, const char *name, const char *desc,
                 const Temp &r)
    : DataWrapVec<Formula, FormulaInfoProxy>(
            parent, name, units::Unspecified::get(), desc)
{
    *this = r;
}
 
Formula::Formula(Group *parent, const char *name, const units::Base *unit,
                 const char *desc, const Temp &r)
    : DataWrapVec<Formula, FormulaInfoProxy>(parent, name, unit, desc)
{
    *this = r;
}
 
const Formula &
Formula::operator=(const Temp &r)
{
    assert(!root && "Can't change formulas");
    root = r.getNodePtr();
    setInit();
    assert(size());
    return *this;
}
 
const Formula &
Formula::operator+=(Temp r)
{
    if (root)
        root = NodePtr(new BinaryNode<std::plus<Result> >(root, r));
    else {
        root = r.getNodePtr();
        setInit();
    }
 
    assert(size());
    return *this;
}
 
const Formula &
Formula::operator/=(Temp r)
{
    assert (root);
    root = NodePtr(new BinaryNode<std::divides<Result> >(root, r));
 
    assert(size());
    return *this;
}
 
 
void
Formula::result(VResult &vec) const
{
    if (root)
        vec = root->result();
}
 
Result
Formula::total() const
{
    return root ? root->total() : 0.0;
}
 
size_type
Formula::size() const
{
    if (!root)
        return 0;
    else
        return root->size();
}
 
void
Formula::reset()
{
}
 
bool
Formula::zero() const
{
    VResult vec;
    result(vec);
    for (VResult::size_type i = 0; i < vec.size(); ++i)
        if (vec[i] != 0.0)
            return false;
    return true;
}
 
std::string
Formula::str() const
{
    return root ? root->str() : "";
}
 
Handler resetHandler = NULL;
Handler dumpHandler = NULL;
 
void
registerHandlers(Handler reset_handler, Handler dump_handler)
{
    resetHandler = reset_handler;
    dumpHandler = dump_handler;
}
 
CallbackQueue dumpQueue;
CallbackQueue resetQueue;
 
void
processResetQueue()
{
    resetQueue.process();
}
 
void
processDumpQueue()
{
    dumpQueue.process();
}
 
void
registerResetCallback(const std::function<void()> &callback)
{
    resetQueue.push_back(callback);
}
 
bool _enabled = false;
 
bool
enabled()
{
    return _enabled;
}
 
void
enable()
{
    if (_enabled)
        fatal("Stats are already enabled");
 
    _enabled = true;
}
 
void
dump()
{
    if (dumpHandler)
        dumpHandler();
    else
        fatal("No registered statistics::dump handler");
}
 
void
reset()
{
    if (resetHandler)
        resetHandler();
    else
        fatal("No registered statistics::reset handler");
}
 
const Info *
resolve(const std::string &name)
{
    const auto &it = nameMap().find(name);
    if (it != nameMap().cend()) {
        return it->second;
    } else {
        return Root::root()->resolveStat(name);
    }
}
 
void
registerDumpCallback(const std::function<void()> &callback)
{
    dumpQueue.push_back(callback);
}
 
} // namespace statistics
 
void
debugDumpStats()
{
    statistics::dump();
}
 
} // namespace gem5