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
79
80
81
82
83
84
85
|
// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/power_monitor/power_monitor_device_source_linux.h"
#include <utility>
#include "base/check.h"
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/location.h"
#include "base/logging.h"
#include "base/memory/scoped_refptr.h"
#include "components/dbus/thread_linux/dbus_thread_linux.h"
#include "dbus/bus.h"
#include "dbus/message.h"
#include "dbus/object_path.h"
#include "dbus/object_proxy.h"
namespace {
scoped_refptr<dbus::Bus> CreateBus() {
dbus::Bus::Options options;
options.bus_type = dbus::Bus::SYSTEM;
options.connection_type = dbus::Bus::PRIVATE;
options.dbus_task_runner = dbus_thread_linux::GetTaskRunner();
return base::MakeRefCounted<dbus::Bus>(options);
}
} // namespace
PowerMonitorDeviceSourceLinux::PowerMonitorDeviceSourceLinux()
: bus_(CreateBus()) {
bus_->GetObjectProxy("org.freedesktop.login1",
dbus::ObjectPath("/org/freedesktop/login1"))
->ConnectToSignal(
"org.freedesktop.login1.Manager", "PrepareForSleep",
base::BindRepeating(&PowerMonitorDeviceSourceLinux::OnPrepareForSleep,
weak_ptr_factory_.GetWeakPtr()),
base::BindOnce(&PowerMonitorDeviceSourceLinux::OnSignalConnected,
weak_ptr_factory_.GetWeakPtr()));
}
PowerMonitorDeviceSourceLinux::~PowerMonitorDeviceSourceLinux() {
if (bus_)
ShutdownBus();
}
bool PowerMonitorDeviceSourceLinux::IsOnBatteryPower() {
// TODO(crbug.com/1320271): Use org.freedesktop.UPower to check for OnBattery.
// One possibility is to connect to the DeviceService's BatteryMonitor.
return false;
}
void PowerMonitorDeviceSourceLinux::ShutdownBus() {
DCHECK(bus_);
dbus::Bus* const bus_ptr = bus_.get();
bus_ptr->GetDBusTaskRunner()->PostTask(
FROM_HERE, base::BindOnce(&dbus::Bus::ShutdownAndBlock, std::move(bus_)));
}
void PowerMonitorDeviceSourceLinux::OnSignalConnected(
const std::string& interface_name,
const std::string& signal_name,
bool connected) {
if (connected)
return;
DLOG(ERROR) << "Failed to connect to " << interface_name << " for signal "
<< signal_name;
if (bus_)
ShutdownBus();
}
void PowerMonitorDeviceSourceLinux::OnPrepareForSleep(dbus::Signal* signal) {
dbus::MessageReader reader(signal);
if (bool start = false; !reader.PopBool(&start) || reader.HasMoreData()) {
DLOG(ERROR) << "Received malformed PrepareForSleep signal from systemd";
} else if (start) {
ProcessPowerEvent(SUSPEND_EVENT);
} else {
ProcessPowerEvent(RESUME_EVENT);
}
}
|
