I/O Test

#define BUFF_SIZE 250
static int io_test(void)
{
    struct tms timing; /* Timing information. */
    clock_t t0, t1;    /* Elapsed times.      */
    char *buffer[BUFF_SIZE];

    /* Allocate buffer. */
    for (int i = 0; i < BUFF_SIZE; i++)
    {
        buffer[i] = malloc(0x200000);
        if (buffer[i] == NULL)
        {
            printf("Error %d!\n", i);
            exit(EXIT_FAILURE);
        }
    }

    /* Fill buffer. */
    t0 = times(&timing);

    for (int i = 0; i < BUFF_SIZE; i++)
        for (int j = 0; j < 0x200000; j++)
            buffer[i][j] = 0x7F;

    t1 = times(&timing);

    /* House keeping. */
    for (int i = 0; i < BUFF_SIZE; i++)
        free(buffer[i]);

    /* Print timing statistics. */
    if (flags & VERBOSE)
        printf("  Elapsed: %d\n", t1 - t0);

    return (0);
}