gistfile1.txt

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

int
main (int  argc, char  *argv[]) {
  char buf[1048576];
	char obuf[1048576];
	int i;

#define N 0x1000

	if(argc > 1) {
		printf("rv(mlock) = %d\n", mlockall (MCL_CURRENT));
	}

	unsigned long long rp = (unsigned long long)obuf;
	for (i = 0; i < N; i++) {
		void *p = memcpy (buf, obuf, sizeof (obuf));
		rp = rp & (unsigned long long)p;
	}

	printf("%llx\n", rp);

	return 0;
}