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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef SYNC_ENGINE_SYNCER_H_ | 5 #ifndef SYNC_ENGINE_SYNCER_H_ |
| 6 #define SYNC_ENGINE_SYNCER_H_ | 6 #define SYNC_ENGINE_SYNCER_H_ |
| 7 | 7 |
| 8 #include <utility> | 8 #include <utility> |
| 9 #include <vector> | 9 #include <vector> |
| 10 | 10 |
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| 24 class MutableEntry; | 24 class MutableEntry; |
| 25 } // namespace syncable | 25 } // namespace syncable |
| 26 | 26 |
| 27 enum SyncerStep { | 27 enum SyncerStep { |
| 28 SYNCER_BEGIN, | 28 SYNCER_BEGIN, |
| 29 DOWNLOAD_UPDATES, | 29 DOWNLOAD_UPDATES, |
| 30 PROCESS_UPDATES, | 30 PROCESS_UPDATES, |
| 31 STORE_TIMESTAMPS, | 31 STORE_TIMESTAMPS, |
| 32 APPLY_UPDATES, | 32 APPLY_UPDATES, |
| 33 COMMIT, | 33 COMMIT, |
| 34 RESOLVE_CONFLICTS, | |
| 35 APPLY_UPDATES_TO_RESOLVE_CONFLICTS, | |
| 36 SYNCER_END | 34 SYNCER_END |
| 37 }; | 35 }; |
| 38 | 36 |
| 39 // A Syncer provides a control interface for driving the individual steps | 37 // A Syncer provides a control interface for driving the individual steps |
| 40 // of the sync cycle. Each cycle (hopefully) moves the client into closer | 38 // of the sync cycle. Each cycle (hopefully) moves the client into closer |
| 41 // synchronization with the server. The individual steps are modeled | 39 // synchronization with the server. The individual steps are modeled |
| 42 // as SyncerCommands, and the ordering of the steps is expressed using | 40 // as SyncerCommands, and the ordering of the steps is expressed using |
| 43 // the SyncerStep enum. | 41 // the SyncerStep enum. |
| 44 // | 42 // |
| 45 // A Syncer instance expects to run on a dedicated thread. Calls | 43 // A Syncer instance expects to run on a dedicated thread. Calls |
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| 95 }; | 93 }; |
| 96 | 94 |
| 97 // Utility function declarations. | 95 // Utility function declarations. |
| 98 void CopyServerFields(syncable::Entry* src, syncable::MutableEntry* dest); | 96 void CopyServerFields(syncable::Entry* src, syncable::MutableEntry* dest); |
| 99 void ClearServerData(syncable::MutableEntry* entry); | 97 void ClearServerData(syncable::MutableEntry* entry); |
| 100 const char* SyncerStepToString(const SyncerStep); | 98 const char* SyncerStepToString(const SyncerStep); |
| 101 | 99 |
| 102 } // namespace syncer | 100 } // namespace syncer |
| 103 | 101 |
| 104 #endif // SYNC_ENGINE_SYNCER_H_ | 102 #endif // SYNC_ENGINE_SYNCER_H_ |
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