如果想获得一个粗劣的计时器，可以用什么方法？
比如 QueryPerfermanceXXXX ?
------解决方案--------------------
在驱动中可以使用别的定时器函数。如下:
IoInitializeTimer：
Associates a timer with the given device object and registers a driver-supplied IoTimer routine for the device object.
IoStartTimer：
Enables the timer for a given device object and calls the driver-supplied IoTimer routine once every second.
IoStopTimer ：
Disables the timer for a given device object so the driver-supplied IoTimer routine is not called unless the driver re-enables the timer.
KeInitializeDpc：
Initializes a DPC object and sets up a driver-supplied CustomTimerDpc routine that can be called with a given context.
KeInitializeTimer：
Initializes a notification timer object to the Not-Signaled state.
KeInitializeTimerEx：
Initializes a notification or synchronization timer object to the Not-Signaled state.
KeSetTimer：
Sets the absolute or relative interval at which a timer object will be set to the Signaled state; optionally supplies a timer DPC to be executed when the interval expires.
KeSetTimerEx：
Sets the absolute or relative interval at which a timer object will be set to the Signaled state; optionally supplies a timer DPC to be executed when the interval expires; and optionally supplies a recurring interval for the timer.
KeCancelTimer：
Cancels a timer object before the interval passed to KeSetTimer expires; dequeues a timer DPC before the timer interval, if any was set, expires.
KeReadStateTimer：
Returns TRUE if a given timer object is set to the Signaled state.
KeQuerySystemTime ：
Returns the current system time.
KeQueryTickCount：
Returns the number of interval-timer interrupts that have occurred since the system was booted.
KeQueryTimeIncrement：
Returns the number of 100-nanosecond units that are added to the system time at each interval-timer interrupt.
KeQueryInterruptTime：
Returns the current value of the system interrupt-time count in 100-nanosecond units.
KeQueryPerformanceCounter：
Returns the system performance counter value in hertz.
如果想看更具体的，请参阅windowsddk