power_state.hh

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#ifndef __SIM_POWER_STATE_HH__
#define __SIM_POWER_STATE_HH__

#include <set>

#include "base/callback.hh"
#include "base/statistics.hh"
#include "enums/PwrState.hh"
#include "params/PowerState.hh"
#include "sim/core.hh"
#include "sim/sim_object.hh"

class PowerDomain;

class PowerState : public SimObject
{
  public:
    PowerState(const PowerStateParams *p);

    typedef PowerStateParams Params;
    const Params* params() const
    {
        return reinterpret_cast<const Params*>(_params);
    }

    virtual void addFollower(PowerState* pwr_obj) {};
    void setControlledDomain(PowerDomain* pwr_dom);

    void serialize(CheckpointOut &cp) const override;
    void unserialize(CheckpointIn &cp) override;

    void set(Enums::PwrState p);


    inline Enums::PwrState get() const
    {
        return _currState;
    }

    inline std::string getName() const
    {
        return Enums::PwrStateStrings[_currState];
    }

    std::vector<double> getWeights() const;

    void computeStats();

    Enums::PwrState matchPwrState(Enums::PwrState p);

    std::set<Enums::PwrState> getPossibleStates() const
    {
        return possibleStates;
    }

  protected:

    Enums::PwrState _currState;

    std::set<Enums::PwrState> possibleStates;

    Tick prvEvalTick = 0;

    PowerDomain* controlledDomain = nullptr;

    struct PowerStateStats : public Stats::Group
    {
        PowerStateStats(PowerState &ps);

        void regStats() override;
        void preDumpStats() override;

        PowerState &powerState;

        Stats::Scalar numTransitions;
        Stats::Scalar numPwrMatchStateTransitions;
        Stats::Distribution ticksClkGated;
        Stats::Vector pwrStateResidencyTicks;
    } stats;
};

class PowerStateDumpCallback : public Callback
{
    PowerState *co;
  public:
    PowerStateDumpCallback(PowerState *co_t) : co(co_t) {}
    virtual void process() { co->computeStats(); };
};

#endif //__SIM_POWER_STATE_HH__