blob: 1f3b97bf98be34ca62c2f60911df727e5840b74f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
// Copyright 2014 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 "device/bluetooth/bluetooth_socket_thread.h"
#include "base/lazy_instance.h"
#include "base/sequenced_task_runner.h"
#include "base/threading/thread.h"
namespace device {
base::LazyInstance<scoped_refptr<BluetoothSocketThread> > g_instance =
LAZY_INSTANCE_INITIALIZER;
// static
scoped_refptr<BluetoothSocketThread> BluetoothSocketThread::Get() {
if (!g_instance.Get().get()) {
g_instance.Get() = new BluetoothSocketThread();
}
return g_instance.Get();
}
// static
void BluetoothSocketThread::CleanupForTesting() {
DCHECK(g_instance.Get());
g_instance.Get() = NULL;
}
BluetoothSocketThread::BluetoothSocketThread()
: active_socket_count_(0) {}
BluetoothSocketThread::~BluetoothSocketThread() {
if (thread_) {
thread_->Stop();
thread_.reset(NULL);
task_runner_ = NULL;
}
}
void BluetoothSocketThread::OnSocketActivate() {
DCHECK(thread_checker_.CalledOnValidThread());
active_socket_count_++;
EnsureStarted();
}
void BluetoothSocketThread::OnSocketDeactivate() {
DCHECK(thread_checker_.CalledOnValidThread());
active_socket_count_--;
if (active_socket_count_ == 0 && thread_) {
thread_->Stop();
thread_.reset(NULL);
task_runner_ = NULL;
}
}
void BluetoothSocketThread::EnsureStarted() {
DCHECK(thread_checker_.CalledOnValidThread());
if (thread_)
return;
base::Thread::Options thread_options;
thread_options.message_loop_type = base::MessageLoop::TYPE_IO;
thread_.reset(new base::Thread("BluetoothSocketThread"));
thread_->StartWithOptions(thread_options);
task_runner_ = thread_->message_loop_proxy();
}
scoped_refptr<base::SequencedTaskRunner> BluetoothSocketThread::task_runner()
const {
DCHECK(active_socket_count_ > 0);
DCHECK(thread_);
DCHECK(task_runner_);
return task_runner_;
}
} // namespace device
|
