Eat up memory (for testing memory caps)

memcaptest.c

// example: ./a.out 10 1 150 
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <errno.h>
int main(int argc, char **argv) {
        int mbytes = atoi(argv[1]);
        int seconds = atoi(argv[2]);
        int limit = atoi(argv[3]);
        int total = 0;
        printf("malloc'ing %d MB every %d second(s)\n", mbytes, seconds);
        while (malloc(mbytes * 1024 * 1024) != NULL) {
                total += mbytes;
                printf("malloc'd %d MB\n", total);
                if (total >= limit) {
                        break;
                }
                sleep(seconds);
        }
        if (errno == ENOMEM)
                printf("ENOMEM\n");
        if (errno == EAGAIN)
                printf("EAGAIN\n");
}