gistfile1.txt

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

char *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()
{

  printf("System Memory: %zu\n", getTotalSystemMemory());
  memory = malloc(getTotalSystemMemory()*.85);
  memset(memory, 0, getTotalSystemMemory()*.85);
  printf("System Memory: %zu\n", getTotalSystemMemory());
  while(1)
  {
    if (signal(SIGINT, signal_handler) == SIG_ERR)
    {
      printf("Signal Error\n");
      exit(1);
    }
  }
}