Interrupt service routine windows 7

Ale Ale 1, 12 12 silver badges 25 25 bronze badges. I added an example of how to have a callback function called periodically for instance every 1 ms in the example code. Then what you do inside the function depends on your application Measuring how much time something your task?

But in this case, why do you need an "interrupt" function? Could you please explain more in detail what you are looking for? Show 18 more comments. Ale: Thank you very much : — sachin s. If I call the task function multiple times and it is printing hello.

The stop- start value is different for calling task function multiple times. I am not getting the same elapsed time for calling it. This is normal, you could only assume constant timing for a function call if you're running it without any interrupts enabled which is of course impossible on a multitasking OS as Windows, except if you run it inside a kernel driver.

The time you see for your task function call includes the time it takes to run the function itself, but also the time the system was running other processes or servicing interrupts. I need your guidance. If I want to get the same elapsed time then what should I do?? Show 4 more comments. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password.

Post as a guest Name. Email Required, but never shown. Ask a question. Quick access. Search related threads. Remove From My Forums. Asked by:. Archived Forums. Sign in to vote. This took me three days to figure out, so I want to share this with fellow developers who may also run into this: My problem was that when my driver was still loaded, Windows 7 and Windows Vista took significantly longer to shutdown from 15 seconds to over 1 minute.

Best Regards, -Robert Schlabbach. Sunday, July 10, PM. Monday, July 11, AM. Stands for "Interrupt Service Routine. It handles the request and sends it to the CPU , interrupting the active process. When the ISR is complete, the process is resumed. A basic example of an ISR is a routine that handles keyboard events, such as pressing or releasing a key.

Each time a key is pressed, the the ISR processes the input. For example, if you press and hold the right arrow key in a text file, the ISR will signal to the CPU that the right arrow key is depressed. The CPU sends this information to the active word processor or text editing program, which will move the cursor to the right. When you let go of the key, the ISR handles the "key up" event. This interrupts the previous "key down" state, which signals to the program to stop moving the cursor.

Many types of hardware devices, including internal components and external peripherals can sent interrupts to the CPU.