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

extern void print_stats(int);

#define NUM_OF_GBYTES 8

int main(void)
{
	char *p[NUM_OF_GBYTES];
	int i;

	for (i = 0; i < NUM_OF_GBYTES; i++) {
		printf("allocating 1GB\n");
		print_stats(0);
		p[i] = malloc(1024 * 1024 * 1024);
		print_stats(1);
		printf("    malloc returned: %p\n", p[i]);
	}

	printf("\n");

	for (i = 0; i < NUM_OF_GBYTES; i++) {
		if (p[i]) {
			printf("memsetting 1GB: %p\n", p[i]);
			print_stats(0);
			memset(p[i], 1, 1024 * 1024 * 1024);
			print_stats(1);
		}
	}

	printf("\n");

	for (i = 0; i < NUM_OF_GBYTES; i++) {
		if (p[i]) {
			printf("free 1GB: %p\n", p[i]);
			print_stats(0);
			free(p[i]);
			print_stats(1);
		}
	}

	return 0;
}