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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 // StatusController handles all counter and status related number crunching and | 5 // StatusController handles all counter and status related number crunching and |
| 6 // state tracking on behalf of a SyncSession. It 'controls' the model data | 6 // state tracking on behalf of a SyncSession. It 'controls' the model data |
| 7 // defined in session_state.h. The most important feature of StatusController | 7 // defined in session_state.h. The most important feature of StatusController |
| 8 // is the ScopedModelSafetyRestriction. When one of these is active, the | 8 // is the ScopedModelSafetyRestriction. When one of these is active, the |
| 9 // underlying data set exposed via accessors is swapped out to the appropriate | 9 // underlying data set exposed via accessors is swapped out to the appropriate |
| 10 // set for the restricted ModelSafeGroup behind the scenes. For example, if | 10 // set for the restricted ModelSafeGroup behind the scenes. For example, if |
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| 22 // assumes one single thread is accessing this class for each unique | 22 // assumes one single thread is accessing this class for each unique |
| 23 // ModelSafeGroup, and also only one single thread (in practice, the | 23 // ModelSafeGroup, and also only one single thread (in practice, the |
| 24 // SyncerThread) responsible for all "shared" access when no restriction is in | 24 // SyncerThread) responsible for all "shared" access when no restriction is in |
| 25 // place. Thus, every bit of data is to be accessed mutually exclusively with | 25 // place. Thus, every bit of data is to be accessed mutually exclusively with |
| 26 // respect to threads. | 26 // respect to threads. |
| 27 // | 27 // |
| 28 // StatusController can also track if changes occur to certain parts of state | 28 // StatusController can also track if changes occur to certain parts of state |
| 29 // so that various parts of the sync engine can avoid broadcasting | 29 // so that various parts of the sync engine can avoid broadcasting |
| 30 // notifications if no changes occurred. | 30 // notifications if no changes occurred. |
| 31 | 31 |
| 32 #ifndef CHROME_BROWSER_SYNC_SESSIONS_STATUS_CONTROLLER_H_ | 32 #ifndef SYNC_SESSIONS_STATUS_CONTROLLER_H_ |
| 33 #define CHROME_BROWSER_SYNC_SESSIONS_STATUS_CONTROLLER_H_ | 33 #define SYNC_SESSIONS_STATUS_CONTROLLER_H_ |
| 34 #pragma once | 34 #pragma once |
| 35 | 35 |
| 36 #include <map> |
| 36 #include <vector> | 37 #include <vector> |
| 37 #include <map> | |
| 38 | 38 |
| 39 #include "base/logging.h" | 39 #include "base/logging.h" |
| 40 #include "base/stl_util.h" | 40 #include "base/stl_util.h" |
| 41 #include "base/time.h" | 41 #include "base/time.h" |
| 42 #include "chrome/browser/sync/sessions/ordered_commit_set.h" | 42 #include "sync/sessions/ordered_commit_set.h" |
| 43 #include "chrome/browser/sync/sessions/session_state.h" | 43 #include "sync/sessions/session_state.h" |
| 44 | 44 |
| 45 namespace browser_sync { | 45 namespace browser_sync { |
| 46 namespace sessions { | 46 namespace sessions { |
| 47 | 47 |
| 48 class StatusController { | 48 class StatusController { |
| 49 public: | 49 public: |
| 50 explicit StatusController(const ModelSafeRoutingInfo& routes); | 50 explicit StatusController(const ModelSafeRoutingInfo& routes); |
| 51 ~StatusController(); | 51 ~StatusController(); |
| 52 | 52 |
| 53 // Returns true if some portion of the session state has changed (is dirty) | 53 // Returns true if some portion of the session state has changed (is dirty) |
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| 287 status_->group_restriction_in_effect_ = false; | 287 status_->group_restriction_in_effect_ = false; |
| 288 } | 288 } |
| 289 private: | 289 private: |
| 290 StatusController* status_; | 290 StatusController* status_; |
| 291 DISALLOW_COPY_AND_ASSIGN(ScopedModelSafeGroupRestriction); | 291 DISALLOW_COPY_AND_ASSIGN(ScopedModelSafeGroupRestriction); |
| 292 }; | 292 }; |
| 293 | 293 |
| 294 } | 294 } |
| 295 } | 295 } |
| 296 | 296 |
| 297 #endif // CHROME_BROWSER_SYNC_SESSIONS_STATUS_CONTROLLER_H_ | 297 #endif // SYNC_SESSIONS_STATUS_CONTROLLER_H_ |
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