power_state.hh

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#ifndef __SIM_POWER_STATE_HH__
#define __SIM_POWER_STATE_HH__
 
#include <set>
#include <vector>
 
#include "base/callback.hh"
#include "base/statistics.hh"
#include "enums/PwrState.hh"
#include "params/PowerState.hh"
#include "sim/sim_object.hh"
 
namespace gem5
{
 
class PowerDomain;
 
class PowerState : public SimObject
{
  public:
    PowerState(const PowerStateParams &p);
 
    PARAMS(PowerState);
 
    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 statistics::Group
    {
        PowerStateStats(PowerState &ps);
 
        void regStats() override;
        void preDumpStats() override;
 
        PowerState &powerState;
 
        statistics::Scalar numTransitions;
        statistics::Scalar numPwrMatchStateTransitions;
        statistics::Distribution ticksClkGated;
        statistics::Vector pwrStateResidencyTicks;
    } stats;
};
 
} // namespace gem5
 
#endif //__SIM_POWER_STATE_HH__