Expand Minimize

KeInitializeTimer routine

The KeInitializeTimer routine initializes a timer object.

Syntax


VOID KeInitializeTimer(
  _Out_ PKTIMER Timer
);

Parameters

Timer [out]

Pointer to a timer object, for which the caller provides the storage.

Return value

None

Remarks

The timer object is initialized to a not-signaled state.

Storage for a timer object must be resident: in the device extension of a driver-created device object, in the controller extension of a driver-created controller object, or in nonpaged pool allocated by the caller.

KeInitializeTimer can only initialize a notification timer. Use KeInitializeTimerEx to initialize a notification timer or a synchronization timer.

Use KeSetTimer or KeSetTimerEx to define when the timer will expire.

For more information about timer objects, see Timer Objects and DPCs.

Callers of KeInitializeTimer should be running at IRQL = DISPATCH_LEVEL or lower. It is best to initialize timers at IRQL = PASSIVE_LEVEL.

Requirements

Target platform

Universal

Version

Available starting with Windows 2000.

Header

Wdm.h (include Wdm.h, Ntddk.h, or Ntifs.h)

Library

Ntoskrnl.lib

IRQL

<= DISPATCH_LEVEL (see Remarks section)

DDI compliance rules

IrqlKeDispatchLte, HwStorPortProhibitedDDIs

See also

KeCancelTimer
KeInitializeTimerEx
KeReadStateTimer
KeSetTimer
KeSetTimerEx
KeWaitForMultipleObjects
KeWaitForSingleObject

 

 

Send comments about this topic to Microsoft

Show:
© 2015 Microsoft