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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 CONTENT_COMMON_GPU_SYNC_POINT_MANAGER_H_ | 5 #ifndef CONTENT_COMMON_GPU_SYNC_POINT_MANAGER_H_ |
6 #define CONTENT_COMMON_GPU_SYNC_POINT_MANAGER_H_ | 6 #define CONTENT_COMMON_GPU_SYNC_POINT_MANAGER_H_ |
7 #pragma once | 7 #pragma once |
8 | 8 |
9 #include <vector> | 9 #include <vector> |
10 | 10 |
11 #include "base/callback.h" | 11 #include "base/callback.h" |
12 #include "base/hash_tables.h" | 12 #include "base/hash_tables.h" |
13 #include "base/memory/ref_counted.h" | 13 #include "base/memory/ref_counted.h" |
14 #include "base/synchronization/lock.h" | 14 #include "base/synchronization/lock.h" |
15 #include "base/threading/thread_checker.h" | 15 #include "base/threading/thread_checker.h" |
16 | 16 |
17 // This class manages the sync points, which allow cross-channel | 17 // This class manages the sync points, which allow cross-channel |
18 // synchronization. | 18 // synchronization. |
19 class SyncPointManager : public base::RefCountedThreadSafe<SyncPointManager>, | 19 class SyncPointManager : public base::RefCountedThreadSafe<SyncPointManager> { |
20 public base::ThreadChecker { | |
21 public: | 20 public: |
22 SyncPointManager(); | 21 SyncPointManager(); |
23 | 22 |
24 // Generates a sync point, returning its ID. This can me called on any thread. | 23 // Generates a sync point, returning its ID. This can me called on any thread. |
25 // IDs start at 1. | 24 // IDs start at 1. |
26 uint32 GenerateSyncPoint(); | 25 uint32 GenerateSyncPoint(); |
27 | 26 |
28 // Retires a sync point. This will call all the registered callbacks for this | 27 // Retires a sync point. This will call all the registered callbacks for this |
29 // sync point. This can only be called on the main thread. | 28 // sync point. This can only be called on the main thread. |
30 void RetireSyncPoint(uint32 sync_point); | 29 void RetireSyncPoint(uint32 sync_point); |
31 | 30 |
32 // Adds a callback to the sync point. The callback will be called when the | 31 // Adds a callback to the sync point. The callback will be called when the |
33 // sync point is retired, or immediately (from within that function) if the | 32 // sync point is retired, or immediately (from within that function) if the |
34 // sync point was already retired (or not created yet). This can only be | 33 // sync point was already retired (or not created yet). This can only be |
35 // called on the main thread. | 34 // called on the main thread. |
36 void AddSyncPointCallback(uint32 sync_point, const base::Closure& callback); | 35 void AddSyncPointCallback(uint32 sync_point, const base::Closure& callback); |
37 | 36 |
38 private: | 37 private: |
39 friend class base::RefCountedThreadSafe<SyncPointManager>; | 38 friend class base::RefCountedThreadSafe<SyncPointManager>; |
40 typedef std::vector<base::Closure> ClosureList; | 39 typedef std::vector<base::Closure> ClosureList; |
41 typedef base::hash_map<uint32, ClosureList > SyncPointMap; | 40 typedef base::hash_map<uint32, ClosureList > SyncPointMap; |
42 | 41 |
43 ~SyncPointManager(); | 42 ~SyncPointManager(); |
44 | 43 |
| 44 base::ThreadChecker thread_checker_; |
| 45 |
45 // Protects the 2 fields below. Note: callbacks shouldn't be called with this | 46 // Protects the 2 fields below. Note: callbacks shouldn't be called with this |
46 // held. | 47 // held. |
47 base::Lock lock_; | 48 base::Lock lock_; |
48 SyncPointMap sync_point_map_; | 49 SyncPointMap sync_point_map_; |
49 uint32 next_sync_point_; | 50 uint32 next_sync_point_; |
50 | 51 |
51 DISALLOW_COPY_AND_ASSIGN(SyncPointManager); | 52 DISALLOW_COPY_AND_ASSIGN(SyncPointManager); |
52 }; | 53 }; |
53 | 54 |
54 #endif // CONTENT_COMMON_GPU_SYNC_POINT_MANAGER_H_ | 55 #endif // CONTENT_COMMON_GPU_SYNC_POINT_MANAGER_H_ |
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