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1 // Copyright (c) 2013 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 "base/logging.h" | |
6 #include "data_fetcher_shared_memory.h" | |
7 | |
8 namespace content { | |
9 | |
10 DataFetcherSharedMemory::~DataFetcherSharedMemory() { | |
11 } | |
12 | |
13 DataFetcherSharedMemory* | |
14 DataFetcherSharedMemory::instance() { | |
15 CR_DEFINE_STATIC_LOCAL(SharedMemoryPlatformDataFetcherEmpty, | |
16 s_data_fetcher, ()); | |
17 return &s_data_fetcher; | |
18 } | |
19 | |
20 bool DataFetcherSharedMemory::NeedsPolling() { | |
21 return false; | |
22 } | |
23 | |
24 bool DataFetcherSharedMemory::FetchDeviceMotionDataIntoBuffer() { | |
25 DCHECK(NeedsPolling()); | |
bulach
2013/07/09 09:03:29
nit: NOTREACHED() ?
timvolodine
2013/07/09 18:59:56
Done.
| |
26 return false; | |
27 } | |
28 | |
29 bool DataFetcherSharedMemory::StartFetchingDeviceMotionData( | |
30 DeviceMotionHardwareBuffer* buffer) { | |
31 DCHECK(buffer); | |
32 device_motion_buffer_->seqlock.WriteBegin(); | |
33 device_motion_buffer_->data.allAvailableSensorsAreActive = true; | |
34 device_motion_buffer_->seqlock.WriteEnd(); | |
35 return true; | |
36 } | |
37 | |
38 void DataFetcherSharedMemory::StopFetchingDeviceMotionData() { | |
39 device_motion_buffer_->seqlock.WriteBegin(); | |
40 device_motion_buffer_->data.allAvailableSensorsAreActive = false; | |
41 device_motion_buffer_->seqlock.WriteEnd(); | |
42 } | |
43 | |
44 } // namespace content | |
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