systemtap signal counter

gistfile1.c

#! /usr/bin/env stap

global signals_sent
global processes

probe signal.send {
  printf("%s was sent to %s (pid:%d) by %s\n", 
           sig_name, pid_name, sig_pid, execname())
  
  signals_sent++
  processes[pid_name]++
}

probe end {
  printf("A total of [%d] signals were sent\n", signals_sent)

  foreach ( process in processes) {
      printf("%s received %d signals\n", process, processes[process])
  }
}