Integer Overflow with PID in C

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Integer Overflow with PID in C

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Hello. I'm trying to implement a C program (for 3DS) that generates processes and finishes them until I can generate an Integer Overflow in the PID so that it is 0, but I'm not exactly sure how to do this. What would be the easiest way?

c

asked by anonymous 29.10.2016 / 18:32

1 answer

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score 0 · Answer 1

One idea would be to create a loop by forking (). Something like:

#include <limits.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
...
int p;
for (p = 0; p < INT_MAX; p++) {
  int status;
  if (!fork()) { // processo filho
    sleep(1); // dormir um tempinho para que o pid nao seja reaproveitado
    exit(0);
  }
  wait(&status, WNOHANG);
}

I did not test the code, but I think you'll need wait (), otherwise you'll end up with a trillion zombie processes. Maybe you also need to reduce sleep () time, replacing it with a usleep (), to have no more concurrent processes than your machine supports.