PROCESSOR_POWER_POLICY structure (winnt.h)
Contains information about processor performance control and C-states.
Syntax
typedef struct _PROCESSOR_POWER_POLICY {
DWORD Revision;
BYTE DynamicThrottle;
BYTE Spare[3];
DWORD DisableCStates : 1;
DWORD Reserved : 31;
DWORD PolicyCount;
PROCESSOR_POWER_POLICY_INFO Policy[3];
} PROCESSOR_POWER_POLICY, *PPROCESSOR_POWER_POLICY;
Members
Revision
The current structure revision level. Set this value by calling ReadProcessorPwrScheme before using a PROCESSOR_POWER_POLICY structure to set power policy.
DynamicThrottle
The current processor performance state policy. This member must be one of the values described in Processor Performance Control Policy Constants.
Spare[3]
Reserved; set to zero.
DisableCStates
Reserved; set to zero.
Reserved
Reserved; set to zero.
PolicyCount
The number of elements in the Policy array.
Policy[3]
An array of PROCESSOR_POWER_POLICY_INFO structures that defines values used to apply processor C-state policy settings. Policy[0] corresponds to ACPI C-state C1, Policy[1] corresponds to C2, and Policy[2] corresponds to C3. The AllowPromotion member determines whether the processor can be promoted to the state. For example, if Policy[0].AllowPromotion is 0, the computer cannot transition from C0 to C1.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows XP [desktop apps only] |
| Minimum supported server | Windows Server 2003 [desktop apps only] |
| Header | winnt.h (include Windows.h) |