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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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