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Side by Side Diff: content/browser/memory/memory_monitor.h

Issue 2321313002: Move components/memory_coordinator -> content/ (Closed)
Patch Set: Created 4 years, 3 months ago
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1 // Copyright (c) 2016 The Chromium Authors. All rights reserved. 1 // Copyright (c) 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 COMPONENTS_MEMORY_COORDINATOR_BROWSER_MEMORY_MONITOR_H_ 5 #ifndef CONTENT_BROWSER_MEMORY_BROWSER_MEMORY_MONITOR_H_
6 #define COMPONENTS_MEMORY_COORDINATOR_BROWSER_MEMORY_MONITOR_H_ 6 #define CONTENT_BROWSER_MEMORY_BROWSER_MEMORY_MONITOR_H_
7 7
8 #include <memory> 8 #include <memory>
9 9
10 #include "base/macros.h" 10 #include "base/macros.h"
11 #include "components/memory_coordinator/common/memory_coordinator_export.h" 11 #include "content/common/content_export.h"
12 12
13 namespace memory_coordinator { 13 namespace content {
14 14
15 // A simple class that monitors the amount of free memory available on a system. 15 // A simple class that monitors the amount of free memory available on a system.
16 // This is an interface to facilitate dependency injection for testing. 16 // This is an interface to facilitate dependency injection for testing.
17 class MEMORY_COORDINATOR_EXPORT MemoryMonitor { 17 class CONTENT_EXPORT MemoryMonitor {
18 public: 18 public:
19 MemoryMonitor() {} 19 MemoryMonitor() {}
20 virtual ~MemoryMonitor() {} 20 virtual ~MemoryMonitor() {}
21 21
22 // Returns the amount of free memory available on the system until the system 22 // Returns the amount of free memory available on the system until the system
23 // will be in a critical state. Critical is as defined by the OS (swapping 23 // will be in a critical state. Critical is as defined by the OS (swapping
24 // will occur, or physical memory will run out, etc). It is possible for this 24 // will occur, or physical memory will run out, etc). It is possible for this
25 // to return negative values, in which case that much memory would have to be 25 // to return negative values, in which case that much memory would have to be
26 // freed in order to exit a critical memory state. 26 // freed in order to exit a critical memory state.
27 virtual int GetFreeMemoryUntilCriticalMB() = 0; 27 virtual int GetFreeMemoryUntilCriticalMB() = 0;
28 28
29 private: 29 private:
30 DISALLOW_COPY_AND_ASSIGN(MemoryMonitor); 30 DISALLOW_COPY_AND_ASSIGN(MemoryMonitor);
31 }; 31 };
32 32
33 // Factory function for creating a monitor for the current platform. 33 // Factory function for creating a monitor for the current platform.
34 MEMORY_COORDINATOR_EXPORT std::unique_ptr<MemoryMonitor> CreateMemoryMonitor(); 34 CONTENT_EXPORT std::unique_ptr<MemoryMonitor> CreateMemoryMonitor();
35 35
36 } // namespace memory_coordinator 36 } // namespace content
37 37
38 #endif // COMPONENTS_MEMORY_COORDINATOR_BROWSER_MEMORY_MONITOR_H_ 38 #endif // CONTENT_BROWSER_MEMORY_BROWSER_MEMORY_MONITOR_H_
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