+ std::vector<iovec> queued_data_copy;
+ int queued_data_last_starting_point_copy = -1;
+
+ // Hold the lock for as short as possible, since add_data_raw() can possibly
+ // write to disk, which might disturb the input thread.
+ {
+ MutexLock lock(&queued_data_mutex);
+ if (queued_data.empty()) {
+ return;
+ }
+
+ swap(queued_data, queued_data_copy);
+ swap(queued_data_last_starting_point, queued_data_last_starting_point_copy);
+ }
+
+ // Update the last suitable starting point for the stream,
+ // if the queued data contains such a starting point.
+ assert(queued_data_last_starting_point_copy < ssize_t(queued_data_copy.size()));
+ if (queued_data_last_starting_point_copy >= 0) {
+ last_suitable_starting_point = bytes_received;
+ for (int i = 0; i < queued_data_last_starting_point_copy; ++i) {
+ last_suitable_starting_point += queued_data_copy[i].iov_len;
+ }