#ifndef _NTPSAPI_H
#if (PHNT_MODE != PHNT_MODE_KERNEL)

/**
 * The POWER_THROTTLING_THREAD_STATE structure contains the throttling policies of a thread subject to power management.
 *
 * \remarks https://learn.microsoft.com/en-us/windows-hardware/drivers/ddi/ntddk/ns-ntddk-_power_throttling_thread_state
 */
typedef struct _POWER_THROTTLING_THREAD_STATE
{
    ULONG Version;          // The version of this structure. Set to THREAD_POWER_THROTTLING_CURRENT_VERSION.
    ULONG ControlMask;      // Flags that enable the caller to take control of the power throttling mechanism.
    ULONG StateMask;        // Flags that manage the power throttling mechanism on/off state.
} POWER_THROTTLING_THREAD_STATE, *PPOWER_THROTTLING_THREAD_STATE;

#endif
#endif
View code on GitHub

// ntddk.h

typedef struct _POWER_THROTTLING_THREAD_STATE {
  ULONG Version;
  ULONG ControlMask;
  ULONG StateMask;
} POWER_THROTTLING_THREAD_STATE, *PPOWER_THROTTLING_THREAD_STATE;
View the official Windows Driver Kit DDI reference