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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 | |
3 // found in the LICENSE file. | |
4 | |
5 #include "device/generic_sensor/polling_platform_sensor.h" | |
6 | |
7 #include "base/message_loop/message_loop.h" | |
8 | |
9 namespace device { | |
10 | |
11 PollingPlatformSensor::PollingPlatformSensor( | |
12 mojom::SensorType type, | |
13 mojo::ScopedSharedBufferMapping mapping, | |
14 PlatformSensorProvider* provider, | |
15 scoped_refptr<base::SingleThreadTaskRunner> polling_thread_task_runner) | |
16 : PlatformSensor(type, std::move(mapping), provider), | |
17 polling_thread_task_runner_(std::move(polling_thread_task_runner)), | |
18 ui_task_runner_(base::MessageLoop::current()->task_runner()) {} | |
19 | |
20 PollingPlatformSensor::~PollingPlatformSensor() = default; | |
21 | |
22 bool PollingPlatformSensor::StartSensor( | |
23 const PlatformSensorConfiguration& configuration) { | |
24 polling_thread_task_runner_->PostTask( | |
25 FROM_HERE, | |
26 base::Bind(&PollingPlatformSensor::BeginPoll, this, configuration)); | |
27 return true; | |
28 } | |
29 | |
30 void PollingPlatformSensor::BeginPoll( | |
31 const PlatformSensorConfiguration& configuration) { | |
32 DCHECK(polling_thread_task_runner_->BelongsToCurrentThread()); | |
33 timer_.Start(FROM_HERE, base::TimeDelta::FromMicroseconds( | |
maksims (do not use this acc)
2016/09/21 08:20:14
You cannot create timer on one thread and kill it
| |
34 base::Time::kMicrosecondsPerSecond / | |
35 configuration.frequency()), | |
36 this, &PollingPlatformSensor::UpdateReading); | |
37 } | |
38 | |
39 void PollingPlatformSensor::StopSensor() { | |
40 polling_thread_task_runner_->PostTask( | |
41 FROM_HERE, base::Bind(&PollingPlatformSensor::StopPoll, this)); | |
42 } | |
43 | |
44 void PollingPlatformSensor::StopPoll() { | |
45 DCHECK(polling_thread_task_runner_->BelongsToCurrentThread()); | |
46 timer_.Stop(); | |
47 } | |
48 | |
49 } // namespace device | |
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