void uv__udp_destroy(uv_udp_t* handle) {
uv_udp_send_t* req;
ngx_queue_t* q;
uv__udp_run_completed(handle);
while (!ngx_queue_empty(&handle->write_queue)) {
q = ngx_queue_head(&handle->write_queue);
ngx_queue_remove(q);
req = ngx_queue_data(q, uv_udp_send_t, queue);
if (req->send_cb) {
/* FIXME proper error code like UV_EABORTED */
uv__set_artificial_error(handle->loop, UV_EINTR);
req->send_cb(req, -1);
}
}
/* Now tear down the handle. */
handle->flags = 0;
handle->recv_cb = NULL;
handle->alloc_cb = NULL;
/* but _do not_ touch close_cb */
if (handle->fd != -1) {
uv__close(handle->fd);
handle->fd = -1;
}
uv__udp_watcher_stop(handle, &handle->read_watcher);
uv__udp_watcher_stop(handle, &handle->write_watcher);
}
static void uv__udp_sendmsg(uv_udp_t* handle) {
assert(!ngx_queue_empty(&handle->write_queue)
|| !ngx_queue_empty(&handle->write_completed_queue));
/* Write out pending data first. */
uv__udp_run_pending(handle);
/* Drain 'request completed' queue. */
uv__udp_run_completed(handle);
if (!ngx_queue_empty(&handle->write_completed_queue)) {
/* Schedule completion callbacks. */
ev_feed_event(handle->loop->ev, &handle->write_watcher, EV_WRITE);
}
else if (ngx_queue_empty(&handle->write_queue)) {
/* Pending queue and completion queue empty, stop watcher. */
uv__udp_watcher_stop(handle, &handle->write_watcher);
}
}
void uv_close(uv_handle_t* handle, uv_close_cb close_cb) {
uv_udp_t* udp;
uv_async_t* async;
uv_timer_t* timer;
uv_stream_t* stream;
uv_process_t* process;
handle->close_cb = close_cb;
switch (handle->type) {
case UV_NAMED_PIPE:
uv_pipe_cleanup((uv_pipe_t*)handle);
/* Fall through. */
case UV_TTY:
case UV_TCP:
stream = (uv_stream_t*)handle;
uv_read_stop(stream);
ev_io_stop(stream->loop->ev, &stream->write_watcher);
uv__close(stream->fd);
stream->fd = -1;
if (stream->accepted_fd >= 0) {
uv__close(stream->accepted_fd);
stream->accepted_fd = -1;
}
assert(!ev_is_active(&stream->read_watcher));
assert(!ev_is_active(&stream->write_watcher));
break;
case UV_UDP:
udp = (uv_udp_t*)handle;
uv__udp_watcher_stop(udp, &udp->read_watcher);
uv__udp_watcher_stop(udp, &udp->write_watcher);
uv__close(udp->fd);
udp->fd = -1;
break;
case UV_PREPARE:
uv_prepare_stop((uv_prepare_t*) handle);
break;
case UV_CHECK:
uv_check_stop((uv_check_t*) handle);
break;
case UV_IDLE:
uv_idle_stop((uv_idle_t*) handle);
break;
case UV_ASYNC:
async = (uv_async_t*)handle;
ev_async_stop(async->loop->ev, &async->async_watcher);
ev_ref(async->loop->ev);
break;
case UV_TIMER:
timer = (uv_timer_t*)handle;
if (ev_is_active(&timer->timer_watcher)) {
ev_ref(timer->loop->ev);
}
ev_timer_stop(timer->loop->ev, &timer->timer_watcher);
break;
case UV_PROCESS:
process = (uv_process_t*)handle;
ev_child_stop(process->loop->ev, &process->child_watcher);
break;
case UV_FS_EVENT:
uv__fs_event_destroy((uv_fs_event_t*)handle);
break;
default:
assert(0);
}
handle->flags |= UV_CLOSING;
/* This is used to call the on_close callback in the next loop. */
ev_idle_start(handle->loop->ev, &handle->next_watcher);
ev_feed_event(handle->loop->ev, &handle->next_watcher, EV_IDLE);
assert(ev_is_pending(&handle->next_watcher));
}
int uv_udp_recv_stop(uv_udp_t* handle) {
uv__udp_watcher_stop(handle, &handle->read_watcher);
handle->alloc_cb = NULL;
handle->recv_cb = NULL;
return 0;
}