#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/mman.h>

int main(int argc, char** argv) {
  if (argc > 1) {
    printf("Sleeping... %s\n", argv[1]);
    sleep(atoi(argv[1]));
  }
  printf("Before mlockall(MCL_CURRENT)\n");
  mlockall(MCL_CURRENT);
  printf("After mlockall(MCL_CURRENT)\n");
}