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Side by Side Diff: device/sensors/data_fetcher_shared_memory_base.h

Issue 2646093002: Move //content/browser/device_sensor/ into device/sensors (Closed)
Patch Set: gn format & code rebase Created 3 years, 10 months ago
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1 // Copyright 2014 The Chromium Authors. All rights reserved. 1 // Copyright 2014 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_BROWSER_DEVICE_SENSORS_DATA_FETCHER_SHARED_MEMORY_BASE_H_ 5 #ifndef DEVICE_SENSORS_DATA_FETCHER_SHARED_MEMORY_BASE_H_
6 #define CONTENT_BROWSER_DEVICE_SENSORS_DATA_FETCHER_SHARED_MEMORY_BASE_H_ 6 #define DEVICE_SENSORS_DATA_FETCHER_SHARED_MEMORY_BASE_H_
7 7
8 #include <map> 8 #include <map>
9 #include <memory> 9 #include <memory>
10 10
11 #include "base/macros.h" 11 #include "base/macros.h"
12 #include "base/memory/shared_memory.h" 12 #include "base/memory/shared_memory.h"
13 #include "base/message_loop/message_loop.h" 13 #include "base/message_loop/message_loop.h"
14 #include "content/browser/device_sensors/device_sensors_consts.h" 14 #include "device/sensors/device_sensor_export.h"
15 #include "content/common/content_export.h" 15 #include "device/sensors/device_sensors_consts.h"
16 #include "mojo/public/cpp/system/buffer.h" 16 #include "mojo/public/cpp/system/buffer.h"
17 17
18 namespace content { 18 namespace device {
19 19
20 // Sensor data fetchers should derive from this base class and implement 20 // Sensor data fetchers should derive from this base class and implement
21 // the abstract Start() and Stop() methods. 21 // the abstract Start() and Stop() methods.
22 // If the fetcher requires polling it should also implement IsPolling() 22 // If the fetcher requires polling it should also implement IsPolling()
23 // to return true and the Fetch() method which will be called from the 23 // to return true and the Fetch() method which will be called from the
24 // polling thread to fetch data at regular intervals. 24 // polling thread to fetch data at regular intervals.
25 class CONTENT_EXPORT DataFetcherSharedMemoryBase { 25 class DEVICE_SENSOR_EXPORT DataFetcherSharedMemoryBase {
26 public: 26 public:
27 // Starts updating the shared memory buffer with sensor data at 27 // Starts updating the shared memory buffer with sensor data at
28 // regular intervals. Returns true if the relevant sensors could 28 // regular intervals. Returns true if the relevant sensors could
29 // be successfully activated. 29 // be successfully activated.
30 bool StartFetchingDeviceData(ConsumerType consumer_type); 30 bool StartFetchingDeviceData(ConsumerType consumer_type);
31 31
32 // Stops updating the shared memory buffer. Returns true if the 32 // Stops updating the shared memory buffer. Returns true if the
33 // relevant sensors could be successfully deactivated. 33 // relevant sensors could be successfully deactivated.
34 bool StopFetchingDeviceData(ConsumerType consumer_type); 34 bool StopFetchingDeviceData(ConsumerType consumer_type);
35 35
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91 std::unique_ptr<PollingThread> polling_thread_; 91 std::unique_ptr<PollingThread> polling_thread_;
92 92
93 using SharedMemoryMap = std::map<ConsumerType, 93 using SharedMemoryMap = std::map<ConsumerType,
94 std::pair<mojo::ScopedSharedBufferHandle, 94 std::pair<mojo::ScopedSharedBufferHandle,
95 mojo::ScopedSharedBufferMapping>>; 95 mojo::ScopedSharedBufferMapping>>;
96 SharedMemoryMap shared_memory_map_; 96 SharedMemoryMap shared_memory_map_;
97 97
98 DISALLOW_COPY_AND_ASSIGN(DataFetcherSharedMemoryBase); 98 DISALLOW_COPY_AND_ASSIGN(DataFetcherSharedMemoryBase);
99 }; 99 };
100 100
101 } // namespace content 101 } // namespace device
102 102
103 #endif // CONTENT_BROWSER_DEVICE_SENSORS_DATA_FETCHER_SHARED_MEMORY_BASE_H_ 103 #endif // DEVICE_SENSORS_DATA_FETCHER_SHARED_MEMORY_BASE_H_
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