PopCheckThermalPolicy

VOID __fastcall PopCheckThermalPolicy(
        _POP_THERMAL_ZONE *ThermalZone,
        UINT64 CurrentTime,
        UINT8 *PassiveEngaged,
        INT *ThrottleDelta){
  DEVICE_OBJECT *DeviceAttachmentBaseRefWithTag; 
  unsigned int CriticalTripPoint; 
  unsigned __int8 v10; 
  unsigned int S4TransitionTripPoint; 
  bool v12; 
  unsigned int ThermalStandbyTripPoint; 
  __int64 i; 
  UINT64 SampleRate; 
  unsigned int CurrentTemperature; 
  unsigned int PassiveTripPoint; 
  UINT8 v18; 
  unsigned __int8 ThermalStandby; 
  unsigned int LastTemp; 
  int HighPrecisionThrottle; 
  unsigned int v22; 
  unsigned int MinimumThrottle; 
  int v24; 
  int v25; 
  unsigned int v26; 
  bool v27; 
  DeviceAttachmentBaseRefWithTag = IoGetDeviceAttachmentBaseRefWithTag(ThermalZone->PolicyDevice.Device, 0x6D546F50ui64);
  ThermalZone->PollingRate = 1000000 * ThermalZone->Info.PollingPeriod;
  CriticalTripPoint = ThermalZone->Info.CriticalTripPoint;
  if( CriticalTripPoint && ThermalZone->Info.CurrentTemperature >= CriticalTripPoint )
  {
    PopPrintEx(
      0i64,
      (INT8 *)"Thermal Zone %S(%p): Above critical temperature(_TMP %d, _CRT %d). Shutdown initiated\n");
    v10 = 1;
  }
  else
  {
    v10 = 0;
  }
  ThermalZone->Policy.Critical = v10;
  S4TransitionTripPoint = ThermalZone->Info.S4TransitionTripPoint;
  v12 = S4TransitionTripPoint && ThermalZone->Info.CurrentTemperature >= S4TransitionTripPoint;
  ThermalZone->Policy.Hibernate = v12;
  ThermalStandbyTripPoint = ThermalZone->Info.ThermalStandbyTripPoint;
  if( ThermalStandbyTripPoint )
  {
    ThermalStandby = ThermalZone->Policy.ThermalStandby;
    if( ThermalZone->Info.CurrentTemperature < ThermalStandbyTripPoint )
    {
      if( ThermalStandby )
        ThermalZone->Policy.ThermalStandby = 0;
    }
    else if( !ThermalStandby )
    {
      ThermalZone->Policy.ThermalStandby = 1;
    }
  }
  for( i = 0i64; (unsigned int)i < ThermalZone->Info.ActiveTripPointCount; i = (unsigned int)(i + 1) )
  {
    if( ThermalZone->Info.CurrentTemperature >= ThermalZone->Info.ActiveTripPoint[i] )
      break;
  }
  SampleRate = ThermalZone->SampleRate;
  ThermalZone->Policy.ActiveLevel = i;
  if( CurrentTime - ThermalZone->LastPassiveTime < SampleRate )
  {
    *ThrottleDelta = 0;
    v18 = ThermalZone->Flags & 1;
  }
  else
  {
    CurrentTemperature = ThermalZone->Info.CurrentTemperature;
    if( ThermalZone->Throttle != 100
      || (PassiveTripPoint = ThermalZone->Info.PassiveTripPoint) != 0 && CurrentTemperature >= PassiveTripPoint )
    {
      if( (ThermalZone->Flags & 1) != 0 )
      {
        LastTemp = ThermalZone->LastTemp;
      }
      else
      {
        ThermalZone->SampleRate = 10000 * ThermalZone->Info.SamplingPeriod;
        LastTemp = ThermalZone->Info.PassiveTripPoint;
      }
      HighPrecisionThrottle = ThermalZone->HighPrecisionThrottle;
      v22 = ThermalZone->Info.ThermalConstant2 * (CurrentTemperature - ThermalZone->Info.PassiveTripPoint)
          + (CurrentTemperature - LastTemp) * ThermalZone->Info.ThermalConstant1;
      if( CurrentTemperature == LastTemp || (((CurrentTemperature - LastTemp) ^ v22) & 0x80000000) == 0 )
        HighPrecisionThrottle -= v22;
      if( HighPrecisionThrottle > 1000 )
        HighPrecisionThrottle = 1000;
      MinimumThrottle = ThermalZone->Info.MinimumThrottle;
      v24 = 0;
      if( HighPrecisionThrottle >= 0 )
        v24 = HighPrecisionThrottle;
      v25 = 10 * MinimumThrottle;
      if( v24 >= (int)(10 * MinimumThrottle) )
        v25 = v24;
      ThermalZone->HighPrecisionThrottle = v25;
      v26 = (v25 + 5) / 10;
      v27 = v26 < ThermalZone->Info.OverThrottleThreshold;
      ThermalZone->Policy.PassiveLimit = v26;
      ThermalZone->Policy.OverThrottled = v27;
      v18 = 1;
      *ThrottleDelta = 0;
      ThermalZone->LastTemp = CurrentTemperature;
      ThermalZone->LastPassiveTime = CurrentTime;
      ThermalZone->Policy.ActivationReasons = 1;
    }
    else
    {
      *ThrottleDelta = 0;
      ThermalZone->Policy.ActivationReasons = 0;
      v18 = 0;
    }
  }
  *PassiveEngaged = v18;
  if( DeviceAttachmentBaseRefWithTag )
    ObfDereferenceObjectWithTag(DeviceAttachmentBaseRefWithTag, 0x6D546F50ui64);
}

Referenced by: