🚀 go-pugleaf

This is a small program to demonstrate how a continue in gdb does not
do anything most of the time. It is in fact very hard to step through the
loop.

The commands for gdb are:

b 15
display count
r

(count == 0)
p timer_count (equal to 1)
c
(count == 0)
p timer_count (equal to 2)
c
(count == 0)
p timer_count (equal to 3)


If next or step are use instead of continue the count will slowly increase.



#include "signal.h"
#include "sys/time.h"

static int timer_count = 0;
static int count;

main()

{
    int i;

    start_timer();

    for (i = 0; i < 1000; i++)
	count = i;
}


start_timer()

{
  struct itimerval timer ;

  timer_count++;

  timer.it_interval.tv_sec = 0;
  timer.it_interval.tv_usec = 0 ;
  timer.it_value.tv_sec = 0;
  timer.it_value.tv_usec = 200;

  signal(SIGALRM, start_timer) ;
  setitimer(ITIMER_REAL, &timer, 0) ;
}