+
+ return memcached_set_error(*instance, MEMCACHED_FAILURE, MEMCACHED_AT, memcached_literal_param("poll() returned a value that was not dealt with"));
+ }
+
+ if (active_fd == 0)
+ {
+ return memcached_set_error(*instance, MEMCACHED_TIMEOUT, MEMCACHED_AT, memcached_literal_param("No active_fd were found"));
+ }
+
+ // Only an error should result in this code being called.
+ int local_errno= get_socket_errno(); // We cache in case memcached_quit_server() modifies errno
+ assert_msg(active_fd == -1 , "poll() returned an unexpected value");
+ switch (local_errno)
+ {
+#ifdef __linux
+ case ERESTART:
+#endif
+ case EINTR:
+ continue;
+
+ case EFAULT:
+ case ENOMEM:
+ memcached_set_error(*instance, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT);
+ break;
+
+ case EINVAL:
+ memcached_set_error(*instance, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT, memcached_literal_param("RLIMIT_NOFILE exceeded, or if OSX the timeout value was invalid"));
+ break;
+
+ default:
+ memcached_set_errno(*instance, local_errno, MEMCACHED_AT, memcached_literal_param("poll"));