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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 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 BASE_MEMORY_MEMORY_COORDINATOR_PROXY_H_ | 5 #ifndef BASE_MEMORY_MEMORY_COORDINATOR_PROXY_H_ |
6 #define BASE_MEMORY_MEMORY_COORDINATOR_PROXY_H_ | 6 #define BASE_MEMORY_MEMORY_COORDINATOR_PROXY_H_ |
7 | 7 |
8 #include "base/base_export.h" | 8 #include "base/base_export.h" |
9 #include "base/callback.h" | 9 #include "base/callback.h" |
10 #include "base/memory/memory_coordinator_client.h" | 10 #include "base/memory/memory_coordinator_client.h" |
11 #include "base/memory/singleton.h" | 11 #include "base/memory/singleton.h" |
12 | 12 |
13 namespace base { | 13 namespace base { |
14 | 14 |
| 15 // The MemoryCoordinator interface. See comments in MemoryCoordinatorProxy for |
| 16 // method descriptions. |
| 17 class BASE_EXPORT MemoryCoordinator { |
| 18 public: |
| 19 virtual ~MemoryCoordinator() {} |
| 20 |
| 21 virtual MemoryState GetCurrentMemoryState() const = 0; |
| 22 virtual void SetCurrentMemoryStateForTesting(MemoryState memory_state) = 0; |
| 23 }; |
| 24 |
15 // The proxy of MemoryCoordinator to be accessed from components that are not | 25 // The proxy of MemoryCoordinator to be accessed from components that are not |
16 // in content/browser e.g. net. | 26 // in content/browser e.g. net. |
17 class BASE_EXPORT MemoryCoordinatorProxy { | 27 class BASE_EXPORT MemoryCoordinatorProxy { |
18 public: | 28 public: |
19 using GetCurrentMemoryStateCallback = base::Callback<MemoryState()>; | 29 static MemoryCoordinatorProxy* GetInstance(); |
20 using SetCurrentMemoryStateCallback = base::Callback<void(MemoryState)>; | |
21 | 30 |
22 static MemoryCoordinatorProxy* GetInstance(); | 31 // Sets an implementation of MemoryCoordinator. MemoryCoordinatorProxy doesn't |
| 32 // take the ownership of |coordinator|. It must outlive this proxy. |
| 33 static void SetMemoryCoordinator(MemoryCoordinator* coordinator); |
23 | 34 |
24 // Returns the current memory state. | 35 // Returns the current memory state. |
25 MemoryState GetCurrentMemoryState() const; | 36 MemoryState GetCurrentMemoryState() const; |
26 | 37 |
27 // Sets the current memory state. This function is for testing only. | 38 // Sets the current memory state. This function is for testing only. |
28 void SetCurrentMemoryStateForTesting(MemoryState memory_state); | 39 void SetCurrentMemoryStateForTesting(MemoryState memory_state); |
29 | 40 |
30 // Sets state-getter callback. | |
31 void SetGetCurrentMemoryStateCallback(GetCurrentMemoryStateCallback callback); | |
32 | |
33 // Sets state-setter callback. | |
34 void SetSetCurrentMemoryStateForTestingCallback( | |
35 SetCurrentMemoryStateCallback callback); | |
36 | |
37 private: | 41 private: |
38 friend struct base::DefaultSingletonTraits<MemoryCoordinatorProxy>; | 42 friend struct base::DefaultSingletonTraits<MemoryCoordinatorProxy>; |
39 | 43 |
40 MemoryCoordinatorProxy(); | 44 MemoryCoordinatorProxy(); |
41 virtual ~MemoryCoordinatorProxy(); | 45 virtual ~MemoryCoordinatorProxy(); |
42 | 46 |
43 GetCurrentMemoryStateCallback getter_callback_; | |
44 SetCurrentMemoryStateCallback setter_callback_; | |
45 | |
46 DISALLOW_COPY_AND_ASSIGN(MemoryCoordinatorProxy); | 47 DISALLOW_COPY_AND_ASSIGN(MemoryCoordinatorProxy); |
47 }; | 48 }; |
48 | 49 |
49 } // namespace base | 50 } // namespace base |
50 | 51 |
51 #endif // BASE_MEMORY_MEMORY_COORDINATOR_PROXY_H_ | 52 #endif // BASE_MEMORY_MEMORY_COORDINATOR_PROXY_H_ |
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