gistfile1.txt

#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <signal.h>

long int *memory;

void signal_handler(int signo)
{
  free (memory);
  exit(0);
}

size_t getTotalSystemMemory()
{
  long pages = sysconf(_SC_AVPHYS_PAGES);
  long page_size = sysconf(_SC_PAGE_SIZE);
  return pages * page_size;
}

int main()
{

  size_t memTotal = getTotalSystemMemory();
  printf("System Memory: %zu\n", memTotal);
  int inc = 1024;
  memory = malloc(inc);
  int total = inc;
  while(memory != NULL)
  {
    memset(memory, 0, inc);
    memory = malloc(inc);
    total += inc;
    sleep(.1);
  }
  printf("Resoruce limit hit!\n");
  printf("Allocated %i out of %lu\n", total, memTotal);
  while(1)
  {
    if (signal(SIGINT, signal_handler) == SIG_ERR)
    {
      printf("Couldn't get signal.\n");
      exit(1);
    }
  }
  exit(0);
}