/*0-64 seconds*/
void delay(unsigned long ticks)
{
unsigned long long lt = jiffers;
while(!timeafter(jiffers,(lt+ ticks)));
return;
}
void do_select(void)
{
fd_set readfds, writefds;
int maxfd, n;
netsvc_t *nwalk;
active_t *awalk, *aprev;
struct timeval now, start;
struct timezone tz;
struct timeval tmo;
char rbuf[4096];
gettimeofday(&start, &tz);
do {
gettimeofday(&now, &tz);
FD_ZERO(&readfds); FD_ZERO(&writefds); maxfd = -1;
nwalk = nethead;
while (nwalk) {
if (nwalk->listenfd) {
FD_SET(nwalk->listenfd, &readfds);
if (nwalk->listenfd > maxfd) maxfd = nwalk->listenfd;
}
nwalk = nwalk->next;
}
awalk = acthead;
while (awalk) {
if (awalk->fd) {
if (!awalk->readdone) {
FD_SET(awalk->fd, &readfds);
if (awalk->fd > maxfd) maxfd = awalk->fd;
}
if (timeafter(&awalk->rbegin, &now)) {
FD_SET(awalk->fd, &writefds);
if (awalk->fd > maxfd) maxfd = awalk->fd;
}
}
awalk = awalk->next;
}
tmo.tv_sec = 0; tmo.tv_usec = 100000;
n = select(maxfd+1, &readfds, &writefds, NULL, &tmo);
} while ((n == 0) && ((now.tv_sec - start.tv_sec) < 10));
if (n <= 0) return;
gettimeofday(&now, &tz);
awalk = acthead; aprev = NULL;
while (awalk) {
if (awalk->fd && !awalk->readdone && FD_ISSET(awalk->fd, &readfds)) {
n = read(awalk->fd, rbuf, sizeof(rbuf));
if (n <= 0) awalk->readdone = 1;
}
if (awalk->fd && awalk->respptr && FD_ISSET(awalk->fd, &writefds)) {
n = write(awalk->fd, awalk->respptr, awalk->bytesleft);
if (n > 0) { awalk->respptr += n; awalk->bytesleft -= n; }
}
else n = 0;
if ((awalk->bytesleft == 0) || (n < 0)) {
if (awalk->respbuf) free(awalk->respbuf);
close(awalk->fd);
awalk->fd = 0;
}
if (awalk->fd) {
aprev = awalk; awalk = awalk->next;
}
else {
active_t *tmp = awalk;
awalk = awalk->next;
if (aprev) aprev->next = awalk;
else acthead = awalk;
free(tmp);
}
}
nwalk = nethead;
while (nwalk) {
int newfd;
if (nwalk->listenfd && FD_ISSET(nwalk->listenfd, &readfds)) {
while ((newfd = accept(nwalk->listenfd, NULL, 0)) > 0) {
/* Pick up a new connection */
fcntl(newfd, F_SETFL, O_NONBLOCK);
active_t *newitem = (active_t *)malloc(sizeof(active_t));
newitem->fd = newfd;
newitem->rbegin.tv_sec = now.tv_sec + nwalk->delay;
newitem->rbegin.tv_usec = now.tv_usec + (random() % 1000000);
if (newitem->rbegin.tv_usec > 1000000) {
newitem->rbegin.tv_usec -= 1000000;
newitem->rbegin.tv_sec++;
}
newitem->svc = nwalk;
if (nwalk->response) {
newitem->respbuf = strdup(nwalk->response);
newitem->respptr = newitem->respbuf;
newitem->bytesleft = nwalk->respsize;
}
else {
newitem->respbuf = NULL;
newitem->respptr = NULL;
newitem->bytesleft = 0;
}
newitem->readdone = 0;
newitem->next = acthead;
acthead = newitem;
}
}
nwalk = nwalk->next;
}
}
