Merge "fix a potential race condition"

                new Thread(worker, "Atlas Worker #" + (i + 1)).start();

            }

            boolean isAllWorkerFinished;

            try {

                signal.await(10, TimeUnit.SECONDS);

                isAllWorkerFinished = signal.await(10, TimeUnit.SECONDS);

            } catch (InterruptedException e) {

                Log.w(LOG_TAG, "Could not complete configuration computation");

                return null;

            }

            if (!isAllWorkerFinished) {

                // We have to abort here, otherwise the async updates on "results" would crash the

                // sort later.

                Log.w(LOG_TAG, "Could not complete configuration computation before timeout.");

                return null;

            }

        }

        // Maximize the number of packed bitmaps, minimize the texture size