Interruptions on x86 cpus

[nelsooon]

Hi all,
Can any one help me to understand the interruption system on linux, on intel based architectures please ?
I need to execute a function that i want by redirecting an IT routine. like 1CH in the vector of interrupt.
example:
I'v done regirect of the SIGINT signal to my function :

[eccerr0r]

I don't understand what you're trying to do. A bit more details?

sigaction is the interface to software, OS-sourced signals/asynchronous interrupts. This has almost nothing to do with hardware interrupts or even software INTxx calls on the processor(though it may use it underneath). You cannot access the hardware interrupts as a user-level application, if you must tie a hardware interrupt to your software, you would need a kernel module.

My first guess is that IT means "Interval Timer" which isn't clear. However, depending on what you need to do, you don't need to patch into the hardware interrupt and just use kernel provided timer interrupts. The POSIX setitimer() function can be used to create a interval timer for user applications, and optionally run the app as a realtime app to make sure these interrupts don't get lost while context swapped.

This should be portable to all Linux implementations. But this may not have the accuracy you need, again brings back to the point what you're trying to do...

[My cursory check on setvect/getvect seems to imply you're talking about hardware/software interrupt vector tables, which is clearly disallowed for a user-mode application.]
_________________
Intel Core i7 2700K/Radeon R7 250/24GB DDR3/256GB SSD
What am I supposed watching?

[nelsooon]

thanks eccerr0r for your response,
I'm talking about the vector of interrupt of the intel architecture.
I have to do just a small example, by derouting an interruption in the vector of interrupt of the system.
When I press CTRL+C keys, the 50h interruption is executed, my routine of interrupt "do some thing", for example write "hello" on /home/test.txt
This is my purpose.
I did that by derouting the SIGINT, that OK.
No I want to do that by using the vector of interrupt of my Intel architecture.
All that in order to understand the difference between interrupt signals (sigint...) and physical interrupt (interrupts of the vector of interrupt).
PS: the meaning of IT was InTerrupt sorry.
thanks

[Link31]