power.c File Reference

#include <k32.h>
#include <ndk/pofuncs.h>
#include <debug.h>

Include dependency graph for power.c:

Go to the source code of this file.

Macros
#define	NDEBUG

Functions
BOOL WINAPI	GetSystemPowerStatus (IN LPSYSTEM_POWER_STATUS PowerStatus)
BOOL WINAPI	SetSystemPowerState (IN BOOL fSuspend, IN BOOL fForce)
BOOL WINAPI	GetDevicePowerState (IN HANDLE hDevice, OUT BOOL *pfOn)
BOOL WINAPI	RequestDeviceWakeup (IN HANDLE hDevice)
BOOL WINAPI	RequestWakeupLatency (IN LATENCY_TIME latency)
BOOL WINAPI	CancelDeviceWakeupRequest (IN HANDLE hDevice)
BOOL WINAPI	IsSystemResumeAutomatic (VOID)
BOOL WINAPI	SetMessageWaitingIndicator (IN HANDLE hMsgIndicator, IN ULONG ulMsgCount)
EXECUTION_STATE WINAPI	SetThreadExecutionState (EXECUTION_STATE esFlags)

Macro Definition Documentation

NDEBUG

#define NDEBUG

Definition at line 17 of file power.c.

Function Documentation

CancelDeviceWakeupRequest()

BOOL WINAPI CancelDeviceWakeupRequest

(

IN HANDLE

hDevice

)

Definition at line 178 of file power.c.

{
    NTSTATUS Status;
 
    Status = NtCancelDeviceWakeupRequest(hDevice);
    if (!NT_SUCCESS(Status))
    {
        BaseSetLastNTError(Status);
        return FALSE;
    }
 
    return TRUE;
}

GetDevicePowerState()

BOOL WINAPI GetDevicePowerState	(	IN HANDLE	hDevice,
		OUT BOOL *	pfOn
	)

Definition at line 117 of file power.c.

{
    DEVICE_POWER_STATE DevicePowerState;
    NTSTATUS Status;
 
    Status = NtGetDevicePowerState(hDevice, &DevicePowerState);
    if (NT_SUCCESS(Status))
    {
        *pfOn = (DevicePowerState == PowerDeviceUnspecified) ||
                (DevicePowerState == PowerDeviceD0);
        return TRUE;
    }
 
    BaseSetLastNTError(Status);
    return FALSE;
}

GetSystemPowerStatus()

BOOL WINAPI GetSystemPowerStatus

(

IN LPSYSTEM_POWER_STATUS

PowerStatus

)

Definition at line 27 of file power.c.

{
    NTSTATUS Status;
    SYSTEM_BATTERY_STATE BattState;
    ULONG Max, Current;
 
    Status = NtPowerInformation(SystemBatteryState,
                                NULL,
                                0,
                                &BattState,
                                sizeof(SYSTEM_BATTERY_STATE));
    if (!NT_SUCCESS(Status))
    {
        BaseSetLastNTError(Status);
        return FALSE;
    }
 
    RtlZeroMemory(PowerStatus, sizeof(SYSTEM_POWER_STATUS));
 
    PowerStatus->BatteryLifeTime = BATTERY_LIFE_UNKNOWN;
    PowerStatus->BatteryFullLifeTime = BATTERY_LIFE_UNKNOWN;
    PowerStatus->BatteryLifePercent = BATTERY_PERCENTAGE_UNKNOWN;
    PowerStatus->ACLineStatus = AC_LINE_ONLINE;
 
    Max = BattState.MaxCapacity;
    Current = BattState.RemainingCapacity;
    if (Max)
    {
        if (Current <= Max)
        {
            PowerStatus->BatteryLifePercent = (UCHAR)((100 * Current + Max / 2) / Max);
        }
        else
        {
            PowerStatus->BatteryLifePercent = 100;
        }
 
        if (PowerStatus->BatteryLifePercent <= 4)
            PowerStatus->BatteryFlag |= BATTERY_FLAG_CRITICAL;
 
        if (PowerStatus->BatteryLifePercent <= 32)
            PowerStatus->BatteryFlag |= BATTERY_FLAG_LOW;
 
        if (PowerStatus->BatteryLifePercent >= 67)
            PowerStatus->BatteryFlag |= BATTERY_FLAG_HIGH;
    }
 
    if (!BattState.BatteryPresent)
        PowerStatus->BatteryFlag |= BATTERY_FLAG_NO_BATTERY;
 
    if (BattState.Charging)
        PowerStatus->BatteryFlag |= BATTERY_FLAG_CHARGING;
 
    if (!(BattState.AcOnLine) && (BattState.BatteryPresent))
        PowerStatus->ACLineStatus = AC_LINE_OFFLINE;
 
    if (BattState.EstimatedTime)
        PowerStatus->BatteryLifeTime = BattState.EstimatedTime;
 
    return TRUE;
}

Referenced by DynamicLoadIcon().

IsSystemResumeAutomatic()

BOOL WINAPI IsSystemResumeAutomatic

(

VOID

)

Definition at line 197 of file power.c.

{
    return (BOOL)NtIsSystemResumeAutomatic();
}

RequestDeviceWakeup()

BOOL WINAPI RequestDeviceWakeup

(

IN HANDLE

hDevice

)

Definition at line 140 of file power.c.

{
    NTSTATUS Status;
 
    Status = NtRequestDeviceWakeup(hDevice);
    if (!NT_SUCCESS(Status))
    {
        BaseSetLastNTError(Status);
        return FALSE;
    }
 
    return TRUE;
}

RequestWakeupLatency()

BOOL WINAPI RequestWakeupLatency

(

IN LATENCY_TIME

latency

)

Definition at line 159 of file power.c.

{
    NTSTATUS Status;
 
    Status = NtRequestWakeupLatency(latency);
    if (!NT_SUCCESS(Status))
    {
        BaseSetLastNTError(Status);
        return FALSE;
    }
 
    return TRUE;
}

SetMessageWaitingIndicator()

BOOL WINAPI SetMessageWaitingIndicator	(	IN HANDLE	hMsgIndicator,
		IN ULONG	ulMsgCount
	)

Definition at line 207 of file power.c.

{
    /* This is the correct Windows implementation */
    SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
    return 0;
}

SetSystemPowerState()

BOOL WINAPI SetSystemPowerState	(	IN BOOL	fSuspend,
		IN BOOL	fForce
	)

Definition at line 94 of file power.c.

{
    NTSTATUS Status;
 
    Status = NtInitiatePowerAction((fSuspend != FALSE) ? PowerActionSleep     : PowerActionHibernate,
                                   (fSuspend != FALSE) ? PowerSystemSleeping1 : PowerSystemHibernate,
                                   (fForce == FALSE),
                                   FALSE);
    if (!NT_SUCCESS(Status))
    {
        BaseSetLastNTError(Status);
        return FALSE;
    }
 
    return TRUE;
}

SetThreadExecutionState()

EXECUTION_STATE WINAPI SetThreadExecutionState

(

EXECUTION_STATE

esFlags

)

Definition at line 220 of file power.c.

{
    NTSTATUS Status;
 
    Status = NtSetThreadExecutionState(esFlags, &esFlags);
    if (!NT_SUCCESS(Status))
    {
        BaseSetLastNTError(Status);
        return 0;
    }
 
    return esFlags;
}