#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/resource.h>

int main(int argc, char **argv)
{
	unsigned int sz = 0;
	void *src = NULL, *dst = NULL;
	int priority = 19;
	int pid = getpid();


	if (argc < 2) {
		printf("Usage: ./mc_memcopy sz\n");
		return 1;
	}

	sz = atoi(argv[1]);

	src = malloc(sz);
	if (src == NULL)
		return 1;


	dst = malloc(sz);
	if (dst == NULL) {
		free(src);
		return 1;
	}

	if (setpriority(PRIO_PROCESS, pid, priority) == -1) {
		perror("setpriority");
		return 1;
	}

	while (1) {
		memcpy(dst, src, sz);
		usleep(1000);
		//memcpy(src, dst, sz);
		//usleep(1000);
	}

	return 0;
}