int
win32_dispatch(struct event_base *base, struct timeval *tv)
{
struct win32op *win32op = base->evbase;
int res = 0;
unsigned j, i;
int fd_count;
SOCKET s;
if (win32op->resize_out_sets) {
size_t size = FD_SET_ALLOC_SIZE(win32op->num_fds_in_fd_sets);
if (!(win32op->readset_out = mm_realloc(win32op->readset_out, size)))
return (-1);
if (!(win32op->exset_out = mm_realloc(win32op->exset_out, size)))
return (-1);
if (!(win32op->writeset_out = mm_realloc(win32op->writeset_out, size)))
return (-1);
win32op->resize_out_sets = 0;
}
fd_set_copy(win32op->readset_out, win32op->readset_in);
fd_set_copy(win32op->exset_out, win32op->writeset_in);
fd_set_copy(win32op->writeset_out, win32op->writeset_in);
fd_count =
(win32op->readset_out->fd_count > win32op->writeset_out->fd_count) ?
win32op->readset_out->fd_count : win32op->writeset_out->fd_count;
if (!fd_count) {
long msec = tv ? evutil_tv_to_msec_(tv) : LONG_MAX;
/* Sleep's DWORD argument is unsigned long */
if (msec < 0)
msec = LONG_MAX;
/* Windows doesn't like you to call select() with no sockets */
Sleep(msec);
return (0);
}
EVBASE_RELEASE_LOCK(base, th_base_lock);
res = select(fd_count,
(struct fd_set*)win32op->readset_out,
(struct fd_set*)win32op->writeset_out,
(struct fd_set*)win32op->exset_out, tv);
EVBASE_ACQUIRE_LOCK(base, th_base_lock);
event_debug(("%s: select returned %d", __func__, res));
if (res <= 0) {
return res;
}
if (win32op->readset_out->fd_count) {
i = evutil_weakrand_range_(&base->weakrand_seed,
win32op->readset_out->fd_count);
for (j=0; j<win32op->readset_out->fd_count; ++j) {
if (++i >= win32op->readset_out->fd_count)
i = 0;
s = win32op->readset_out->fd_array[i];
evmap_io_active_(base, s, EV_READ);
}
}
if (win32op->exset_out->fd_count) {
i = evutil_weakrand_range_(&base->weakrand_seed,
win32op->exset_out->fd_count);
for (j=0; j<win32op->exset_out->fd_count; ++j) {
if (++i >= win32op->exset_out->fd_count)
i = 0;
s = win32op->exset_out->fd_array[i];
evmap_io_active_(base, s, EV_WRITE);
}
}
if (win32op->writeset_out->fd_count) {
SOCKET s;
i = evutil_weakrand_range_(&base->weakrand_seed,
win32op->writeset_out->fd_count);
for (j=0; j<win32op->writeset_out->fd_count; ++j) {
if (++i >= win32op->writeset_out->fd_count)
i = 0;
s = win32op->writeset_out->fd_array[i];
evmap_io_active_(base, s, EV_WRITE);
}
}
return (0);
}
int
win32_dispatch(struct event_base *base, struct timeval *tv)
{
struct win32op *win32op = base->evbase;
int res = 0;
unsigned j, i;
int fd_count;
SOCKET s;
if (win32op->resize_out_sets) {
size_t size = FD_SET_ALLOC_SIZE(win32op->fd_setsz);
if (!(win32op->readset_out = mm_realloc(win32op->readset_out, size)))
return (-1);
if (!(win32op->exset_out = mm_realloc(win32op->exset_out, size)))
return (-1);
if (!(win32op->writeset_out = mm_realloc(win32op->writeset_out, size)))
return (-1);
win32op->resize_out_sets = 0;
}
fd_set_copy(win32op->readset_out, win32op->readset_in);
fd_set_copy(win32op->exset_out, win32op->writeset_in);
fd_set_copy(win32op->writeset_out, win32op->writeset_in);
fd_count =
(win32op->readset_out->fd_count > win32op->writeset_out->fd_count) ?
win32op->readset_out->fd_count : win32op->writeset_out->fd_count;
if (!fd_count) {
/* Windows doesn't like you to call select() with no sockets */
Sleep(timeval_to_ms(tv));
evsig_process(base);
return (0);
}
EVBASE_RELEASE_LOCK(base, EVTHREAD_WRITE, th_base_lock);
res = select(fd_count,
(struct fd_set*)win32op->readset_out,
(struct fd_set*)win32op->writeset_out,
(struct fd_set*)win32op->exset_out, tv);
EVBASE_ACQUIRE_LOCK(base, EVTHREAD_WRITE, th_base_lock);
event_debug(("%s: select returned %d", __func__, res));
if(res <= 0) {
evsig_process(base);
return res;
} else if (base->sig.evsig_caught) {
evsig_process(base);
}
if (win32op->readset_out->fd_count) {
i = rand() % win32op->readset_out->fd_count;
for (j=0; j<win32op->readset_out->fd_count; ++j) {
if (++i >= win32op->readset_out->fd_count)
i = 0;
s = win32op->readset_out->fd_array[i];
evmap_io_active(base, s, EV_READ);
}
}
if (win32op->exset_out->fd_count) {
i = rand() % win32op->exset_out->fd_count;
for (j=0; j<win32op->exset_out->fd_count; ++j) {
if (++i >= win32op->exset_out->fd_count)
i = 0;
s = win32op->exset_out->fd_array[i];
evmap_io_active(base, s, EV_WRITE);
}
}
if (win32op->writeset_out->fd_count) {
SOCKET s;
i = rand() % win32op->writeset_out->fd_count;
for (j=0; j<win32op->writeset_out->fd_count; ++j) {
if (++i >= win32op->writeset_out->fd_count)
i = 0;
s = win32op->writeset_out->fd_array[i];
evmap_io_active(base, s, EV_WRITE);
}
}
return (0);
}
