| // Copyright 2013 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef FLUTTER_RUNTIME_START_UP_H_ |
| #define FLUTTER_RUNTIME_START_UP_H_ |
| |
| #include <stdint.h> |
| |
| namespace flutter { |
| |
| // The earliest available timestamp in the application's lifecycle. The |
| // difference between this timestamp and the time we render the very first |
| // frame gives us a good idea about Flutter's startup time. |
| // |
| // This timestamp only covers Flutter's own startup. In an upside-down model |
| // it is possible that the first Flutter view is not initialized until some |
| // time later. In this case the timestamp may not cover the time spent in the |
| // user code prior to initializing Flutter. |
| extern int64_t engine_main_enter_ts; |
| |
| } // namespace flutter |
| |
| #endif // FLUTTER_RUNTIME_START_UP_H_ |
