Reset running process when certain ammount of memory is consumed

I'm running a Hydra on Rasppberry PI. There were some problems with the program, but aside from these, there is a hidden memory leak in the program. The source is pretty big and really can't find the problem. Unfortunatelly, upon reaching memory limit, the program doesn't crash - instead it returns bunch of error messages. When I say bunch, I mean hundreds. So I thought the if I can't un-allocate the memory within the program, I might need to reset whole process. **So I need to:** 1. Guard the process resource usage 2. Stop the process **gracefully** (similar to Ctrl+C, the program says "*received signal 2*" then) 3. Start the process again I must do this until fix the program to die on errors - or not to produce them in the first place. ---- If you know hydra and you're curious about the errors I've found at least something in the code:

[ERROR] Fork for children failed: Cannot allocate memory
[ERROR] socketpair creation failed: Too many open files

The second part of the errors comes from perror C system function. It's sort of last error.