Алгоритми маршрутизації в мережах, Детальна інформація

rtmalloc(size_t size,

char *msg)

{

void *p = malloc(size);

if (p == 0)

logbad(1,"malloc() failed in %s", msg);

return p;

}

/* get a random instant in an interval

*/

void

intvl_random(struct timeval *tp, /* put value here */

u_long lo, /* value is after this second */

u_long hi) /* and before this */

{

tp->tv_sec = (time_t)(hi == lo

? lo

: (lo + random() % ((hi - lo))));

tp->tv_usec = random() % 1000000;

}

void

timevaladd(struct timeval *t1,

struct timeval *t2)

{

t1->tv_sec += t2->tv_sec;

if ((t1->tv_usec += t2->tv_usec) > 1000000) {

t1->tv_sec++;

t1->tv_usec -= 1000000;

}

}