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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 #include "device/generic_sensor/platform_sensor_provider_base.h" | 5 #include "device/generic_sensor/platform_sensor_provider_base.h" |
6 | 6 |
7 #include <utility> | 7 #include <utility> |
8 | 8 |
9 #include "base/stl_util.h" | 9 #include "base/stl_util.h" |
10 #include "device/generic_sensor/public/interfaces/sensor_provider.mojom.h" | 10 #include "device/generic_sensor/public/interfaces/sensor_provider.mojom.h" |
11 | 11 |
12 namespace device { | 12 namespace device { |
13 | 13 |
14 namespace { | 14 namespace { |
15 | 15 |
16 const uint64_t kReadingBufferSize = sizeof(SensorReadingSharedBuffer); | 16 const uint64_t kReadingBufferSize = sizeof(SensorReadingSharedBuffer); |
17 const uint64_t kSharedBufferSizeInBytes = | 17 const uint64_t kSharedBufferSizeInBytes = |
18 kReadingBufferSize * static_cast<uint64_t>(mojom::SensorType::LAST); | 18 kReadingBufferSize * static_cast<uint64_t>(mojom::SensorType::LAST); |
19 | 19 |
20 } // namespace | 20 } // namespace |
21 | 21 |
22 PlatformSensorProviderBase::PlatformSensorProviderBase() = default; | 22 PlatformSensorProviderBase::PlatformSensorProviderBase() = default; |
23 PlatformSensorProviderBase::~PlatformSensorProviderBase() = default; | 23 |
| 24 PlatformSensorProviderBase::~PlatformSensorProviderBase() { |
| 25 DCHECK_CALLED_ON_VALID_THREAD(thread_checker_); |
| 26 } |
24 | 27 |
25 void PlatformSensorProviderBase::CreateSensor( | 28 void PlatformSensorProviderBase::CreateSensor( |
26 mojom::SensorType type, | 29 mojom::SensorType type, |
27 const CreateSensorCallback& callback) { | 30 const CreateSensorCallback& callback) { |
28 DCHECK(CalledOnValidThread()); | 31 DCHECK_CALLED_ON_VALID_THREAD(thread_checker_); |
29 | 32 |
30 if (!CreateSharedBufferIfNeeded()) { | 33 if (!CreateSharedBufferIfNeeded()) { |
31 callback.Run(nullptr); | 34 callback.Run(nullptr); |
32 return; | 35 return; |
33 } | 36 } |
34 | 37 |
35 mojo::ScopedSharedBufferMapping mapping = MapSharedBufferForType(type); | 38 mojo::ScopedSharedBufferMapping mapping = MapSharedBufferForType(type); |
36 if (!mapping) { | 39 if (!mapping) { |
37 callback.Run(nullptr); | 40 callback.Run(nullptr); |
38 return; | 41 return; |
39 } | 42 } |
40 | 43 |
41 auto it = requests_map_.find(type); | 44 auto it = requests_map_.find(type); |
42 if (it != requests_map_.end()) { | 45 if (it != requests_map_.end()) { |
43 it->second.push_back(callback); | 46 it->second.push_back(callback); |
44 } else { // This is the first CreateSensor call. | 47 } else { // This is the first CreateSensor call. |
45 requests_map_[type] = CallbackQueue({callback}); | 48 requests_map_[type] = CallbackQueue({callback}); |
46 | 49 |
47 CreateSensorInternal( | 50 CreateSensorInternal( |
48 type, std::move(mapping), | 51 type, std::move(mapping), |
49 base::Bind(&PlatformSensorProviderBase::NotifySensorCreated, | 52 base::Bind(&PlatformSensorProviderBase::NotifySensorCreated, |
50 base::Unretained(this), type)); | 53 base::Unretained(this), type)); |
51 } | 54 } |
52 } | 55 } |
53 | 56 |
54 scoped_refptr<PlatformSensor> PlatformSensorProviderBase::GetSensor( | 57 scoped_refptr<PlatformSensor> PlatformSensorProviderBase::GetSensor( |
55 mojom::SensorType type) { | 58 mojom::SensorType type) { |
56 DCHECK(CalledOnValidThread()); | 59 DCHECK_CALLED_ON_VALID_THREAD(thread_checker_); |
57 | 60 |
58 auto it = sensor_map_.find(type); | 61 auto it = sensor_map_.find(type); |
59 if (it != sensor_map_.end()) | 62 if (it != sensor_map_.end()) |
60 return it->second; | 63 return it->second; |
61 return nullptr; | 64 return nullptr; |
62 } | 65 } |
63 | 66 |
64 bool PlatformSensorProviderBase::CreateSharedBufferIfNeeded() { | 67 bool PlatformSensorProviderBase::CreateSharedBufferIfNeeded() { |
65 DCHECK(CalledOnValidThread()); | 68 DCHECK_CALLED_ON_VALID_THREAD(thread_checker_); |
66 if (shared_buffer_handle_.is_valid()) | 69 if (shared_buffer_handle_.is_valid()) |
67 return true; | 70 return true; |
68 | 71 |
69 shared_buffer_handle_ = | 72 shared_buffer_handle_ = |
70 mojo::SharedBufferHandle::Create(kSharedBufferSizeInBytes); | 73 mojo::SharedBufferHandle::Create(kSharedBufferSizeInBytes); |
71 return shared_buffer_handle_.is_valid(); | 74 return shared_buffer_handle_.is_valid(); |
72 } | 75 } |
73 | 76 |
74 void PlatformSensorProviderBase::RemoveSensor(mojom::SensorType type) { | 77 void PlatformSensorProviderBase::RemoveSensor(mojom::SensorType type) { |
75 DCHECK(CalledOnValidThread()); | 78 DCHECK_CALLED_ON_VALID_THREAD(thread_checker_); |
76 DCHECK(ContainsKey(sensor_map_, type)); | 79 DCHECK(ContainsKey(sensor_map_, type)); |
77 sensor_map_.erase(type); | 80 sensor_map_.erase(type); |
78 | 81 |
79 if (sensor_map_.empty()) { | 82 if (sensor_map_.empty()) { |
80 AllSensorsRemoved(); | 83 AllSensorsRemoved(); |
81 shared_buffer_handle_.reset(); | 84 shared_buffer_handle_.reset(); |
82 } | 85 } |
83 } | 86 } |
84 | 87 |
85 mojo::ScopedSharedBufferHandle | 88 mojo::ScopedSharedBufferHandle |
86 PlatformSensorProviderBase::CloneSharedBufferHandle() { | 89 PlatformSensorProviderBase::CloneSharedBufferHandle() { |
87 DCHECK(CalledOnValidThread()); | 90 DCHECK_CALLED_ON_VALID_THREAD(thread_checker_); |
88 CreateSharedBufferIfNeeded(); | 91 CreateSharedBufferIfNeeded(); |
89 return shared_buffer_handle_->Clone( | 92 return shared_buffer_handle_->Clone( |
90 mojo::SharedBufferHandle::AccessMode::READ_ONLY); | 93 mojo::SharedBufferHandle::AccessMode::READ_ONLY); |
91 } | 94 } |
92 | 95 |
93 bool PlatformSensorProviderBase::HasSensors() const { | 96 bool PlatformSensorProviderBase::HasSensors() const { |
94 DCHECK(CalledOnValidThread()); | 97 DCHECK_CALLED_ON_VALID_THREAD(thread_checker_); |
95 return !sensor_map_.empty(); | 98 return !sensor_map_.empty(); |
96 } | 99 } |
97 | 100 |
98 void PlatformSensorProviderBase::NotifySensorCreated( | 101 void PlatformSensorProviderBase::NotifySensorCreated( |
99 mojom::SensorType type, | 102 mojom::SensorType type, |
100 scoped_refptr<PlatformSensor> sensor) { | 103 scoped_refptr<PlatformSensor> sensor) { |
101 DCHECK(CalledOnValidThread()); | 104 DCHECK_CALLED_ON_VALID_THREAD(thread_checker_); |
102 DCHECK(!ContainsKey(sensor_map_, type)); | 105 DCHECK(!ContainsKey(sensor_map_, type)); |
103 DCHECK(ContainsKey(requests_map_, type)); | 106 DCHECK(ContainsKey(requests_map_, type)); |
104 | 107 |
105 if (sensor) | 108 if (sensor) |
106 sensor_map_[type] = sensor.get(); | 109 sensor_map_[type] = sensor.get(); |
107 | 110 |
108 // Inform subscribers about the sensor. | 111 // Inform subscribers about the sensor. |
109 // |sensor| can be nullptr here. | 112 // |sensor| can be nullptr here. |
110 auto it = requests_map_.find(type); | 113 auto it = requests_map_.find(type); |
111 for (auto& callback : it->second) | 114 for (auto& callback : it->second) |
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124 | 127 |
125 mojo::ScopedSharedBufferMapping | 128 mojo::ScopedSharedBufferMapping |
126 PlatformSensorProviderBase::MapSharedBufferForType(mojom::SensorType type) { | 129 PlatformSensorProviderBase::MapSharedBufferForType(mojom::SensorType type) { |
127 mojo::ScopedSharedBufferMapping mapping = shared_buffer_handle_->MapAtOffset( | 130 mojo::ScopedSharedBufferMapping mapping = shared_buffer_handle_->MapAtOffset( |
128 kReadingBufferSize, SensorReadingSharedBuffer::GetOffset(type)); | 131 kReadingBufferSize, SensorReadingSharedBuffer::GetOffset(type)); |
129 memset(mapping.get(), 0, kReadingBufferSize); | 132 memset(mapping.get(), 0, kReadingBufferSize); |
130 return mapping; | 133 return mapping; |
131 } | 134 } |
132 | 135 |
133 } // namespace device | 136 } // namespace device |
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