Index: content/browser/device_orientation/device_motion_service.cc |
diff --git a/content/browser/device_orientation/device_motion_service.cc b/content/browser/device_orientation/device_motion_service.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..ed1dcc6f25d4f0b1e130d2993ffc4eea40eac99d |
--- /dev/null |
+++ b/content/browser/device_orientation/device_motion_service.cc |
@@ -0,0 +1,65 @@ |
+// Copyright (c) 2013 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#include "content/browser/device_orientation/device_motion_service.h" |
+ |
+#include "base/bind.h" |
+#include "base/logging.h" |
+#include "base/memory/singleton.h" |
+#include "content/browser/device_orientation/device_motion_provider.h" |
+#include "content/public/browser/render_process_host.h" |
+ |
+namespace content { |
+ |
+DeviceMotionService::DeviceMotionService() |
+ : num_readers_(0), |
+ is_shutdown_(false) { |
+} |
+ |
+DeviceMotionService::~DeviceMotionService() { |
+} |
+ |
+DeviceMotionService* DeviceMotionService::GetInstance() { |
+ return Singleton<DeviceMotionService, |
+ LeakySingletonTraits<DeviceMotionService> >::get(); |
+} |
+ |
+void DeviceMotionService::AddConsumer() { |
+ DCHECK(thread_checker_.CalledOnValidThread()); |
+ if (is_shutdown_) |
+ return; |
+ |
+ num_readers_++; |
+ DCHECK(num_readers_ > 0); |
+ if (!provider_.get()) |
+ provider_.reset(new DeviceMotionProvider); |
+ provider_->StartFetchingDeviceMotionData(); |
+} |
+ |
+void DeviceMotionService::RemoveConsumer() { |
+ DCHECK(thread_checker_.CalledOnValidThread()); |
+ if (is_shutdown_) |
+ return; |
+ |
+ --num_readers_; |
+ DCHECK(num_readers_ >= 0); |
+ |
+ if (num_readers_ == 0) { |
+ LOG(INFO) << "ACTIVE service stop fetching"; |
+ provider_->StopFetchingDeviceMotionData(); |
+ } |
+} |
+ |
+void DeviceMotionService::Shutdown() { |
+ provider_.reset(); |
+ is_shutdown_ = true; |
+} |
+ |
+base::SharedMemoryHandle DeviceMotionService::GetSharedMemoryHandleForProcess( |
+ base::ProcessHandle handle) { |
+ DCHECK(thread_checker_.CalledOnValidThread()); |
+ return provider_->GetSharedMemoryHandleForProcess(handle); |
+} |
+ |
+} // namespace content |