14.1.1.1 Setting Up an IoTimer Routine

The DriverEntry routine must set up each IoTimer routine as follows:

1. Call IoCreateDevice first to set up the device object(s) with which the IoTimer routine will be associated.

2. Call IoInitializeTimer with the entry point for the IoTimer routine, a Context pointer to any driver-determined context area the IoTimer routine will use, and a DeviceObject pointer for the target device on which an operation could time out.

Calling IoInitializeTimer registers the driver’s IoTimer routine for the given device object.

For more information about creating device objects and about the timer object associated with an IoTimer routine, see Chapter 3. See also the Kernel-Mode Driver Reference for details about IoInitializeTimer.