| Andrew de los Reyes | 0ce161b | 2010-02-22 15:27:01 -0800 | [diff] [blame^] | 1 | // Copyright (c) 2009 The Chromium Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #ifndef CHROMEOS_PLATFORM_UPDATE_ENGINE_GRAPH_UTILS_H__ |
| 6 | #define CHROMEOS_PLATFORM_UPDATE_ENGINE_GRAPH_UTILS_H__ |
| 7 | |
| 8 | #include <vector> |
| 9 | #include "base/basictypes.h" |
| 10 | #include "update_engine/graph_types.h" |
| 11 | #include "update_engine/update_metadata.pb.h" |
| 12 | |
| 13 | // A few utility functions for graphs |
| 14 | |
| 15 | namespace chromeos_update_engine { |
| 16 | |
| 17 | namespace graph_utils { |
| 18 | |
| 19 | // Returns the number of blocks represented by all extents in the edge. |
| 20 | uint64 EdgeWeight(const Graph& graph, const Edge& edge); |
| 21 | |
| 22 | // block must either be the next block in the last extent or a block |
| 23 | // in the next extent. This function will not handle inserting block |
| 24 | // into an arbitrary place in the extents. |
| 25 | void AppendBlockToExtents(std::vector<Extent>* extents, uint64 block); |
| 26 | |
| 27 | } // namespace graph_utils |
| 28 | |
| 29 | } // namespace chromeos_update_engine |
| 30 | |
| 31 | #endif // CHROMEOS_PLATFORM_UPDATE_ENGINE_GRAPH_UTILS_H__ |