(Windows)Sleep in kernel driver

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Hello,
i started to learn about driver programming

i want to make my driver do a thing every 2000 ms for example

and in c++ i will be like this

C++

while(true){
Sleep(2000);//(2 Seconds)
DoSomething();
}

the question is :
how to do like it in c driver
it must be like this

C++

while(1)
{
SleepFunction(2000);//Which doesnt exist
DoSomething();
}

Posted 4-Aug-13 12:47pm

Comments

xXTariqoO 4-Aug-13 19:27pm

i prefer to use it in new thread

2 solutions

Also you can use KeDelayExcutionThread

Third parameter of this function is in 100 nano seconds(0.01 micro seconds)

http://msdn.microsoft.com/en-us/library/windows/hardware/ff551986%28v=vs.85%29.aspx[^]

Posted 25-May-14 3:35am

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User 59241 · Accepted Answer · 2013-08-04T14:17:00

The principle is exactly the same as creating delays in user mode. Sleep() has very limited value and you can use Google to find out why. Ultimately you need waitable timers.

(1) Create a kernel timer via KeInitializeTimer.

http://msdn.microsoft.com/en-us/library/windows/hardware/ff552168(v=vs.85).aspx

(2) Set the timer with KeSetTimerEx and use a period of 2s for example.

http://msdn.microsoft.com/en-us/library/windows/hardware/ff553292(v=vs.85).aspx

(3) Create a thread in your driver. In the thread, call KeWaitForSingleObject to wait on the timer.

http://msdn.microsoft.com/en-us/library/windows/hardware/ff553350(v=vs.85).aspx
See also:

http://www-user.tu-chemnitz.de/~heha/oney_wdm/ch04e.htm

http://www.techtalkz.com/microsoft-device-drivers/245779-kesettimer-expiration.html

After that refer to Google.