Signal Handling Concept in Linux System Programming
1 Answers
Anonymous answered 2 years ago
- Signals overview
- Sender process, target process
- Signal pending bits (pending field) in process desriptor/PCB
- Signal maks bit (mask field) in process desriptor/PCB
- Signal handler table (per process)
- Signals involved in common actions
- Key strokes : Ctrl + C, Ctrl + \, Ctrl + Z
- Child process termination
- Resuming suspended process
- Floating point exception
- Segmentation fault
- Running a process in background with & suffix
- Default signal handler, their behavior
- Register customer handlers
- Non maskable signals – SIGKILL & SIGSTOP
- Do custom handlers applicable for non maskable signals?
- Commands for generating signals
- Commands for job control – fg, bg, jobs
- Commands for sending signals – kill, killall, pkill
- APIs for generating & handling signals