-/* Registers 'fd' as waiting for the specified 'events' (which should be POLLIN
- * or POLLOUT or POLLIN | POLLOUT). The following call to poll_block() will
- * wake up when 'fd' becomes ready for one or more of the requested events.
+/* Look up the node with same fd and wevent. */
+static struct poll_node *
+find_poll_node(struct poll_loop *loop, int fd, uint32_t wevent)
+{
+ struct poll_node *node;
+
+ HMAP_FOR_EACH_WITH_HASH (node, hmap_node, hash_2words(fd, wevent),
+ &loop->poll_nodes) {
+ if (node->pollfd.fd == fd && node->wevent == wevent) {
+ return node;
+ }
+ }
+ return NULL;
+}
+
+/* On Unix based systems: