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
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/dom/ContentParent.h"
#include "mozilla/Hal.h"
#include "mozilla/HalWakeLock.h"
#include "mozilla/ClearOnShutdown.h"
#include "mozilla/Preferences.h"
#include "mozilla/Services.h"
#include "jsprf.h"
#include "nsIDOMWakeLockListener.h"
#include "nsIDOMWindow.h"
#include "nsIObserverService.h"
#include "PowerManagerService.h"
#include "WakeLock.h"
// For _exit().
#ifdef XP_WIN
#include <process.h>
#else
#include <unistd.h>
#endif
#ifdef ANDROID
#include <android/log.h>
extern "C" char* PrintJSStack();
static void LogFunctionAndJSStack(const char* funcname) {
char *jsstack = PrintJSStack();
__android_log_print(ANDROID_LOG_INFO, "PowerManagerService", \
"Call to %s. The JS stack is:\n%s\n",
funcname,
jsstack ? jsstack : "<no JS stack>");
JS_smprintf_free(jsstack);
}
// bug 839452
#define LOG_FUNCTION_AND_JS_STACK() \
LogFunctionAndJSStack(__PRETTY_FUNCTION__);
#else
#define LOG_FUNCTION_AND_JS_STACK()
#endif
namespace mozilla {
namespace dom {
namespace power {
using namespace hal;
NS_IMPL_ISUPPORTS(PowerManagerService, nsIPowerManagerService)
/* static */ StaticRefPtr<PowerManagerService> PowerManagerService::sSingleton;
/* static */ already_AddRefed<PowerManagerService>
PowerManagerService::GetInstance()
{
if (!sSingleton) {
sSingleton = new PowerManagerService();
sSingleton->Init();
ClearOnShutdown(&sSingleton);
}
RefPtr<PowerManagerService> service = sSingleton.get();
return service.forget();
}
void
PowerManagerService::Init()
{
RegisterWakeLockObserver(this);
// NB: default to *enabling* the watchdog even when the pref is
// absent, in case the profile might be damaged and we need to
// restart to repair it.
mWatchdogTimeoutSecs =
Preferences::GetInt("shutdown.watchdog.timeoutSecs", 10);
}
PowerManagerService::~PowerManagerService()
{
UnregisterWakeLockObserver(this);
}
void
PowerManagerService::ComputeWakeLockState(const WakeLockInformation& aWakeLockInfo,
nsAString &aState)
{
WakeLockState state = hal::ComputeWakeLockState(aWakeLockInfo.numLocks(),
aWakeLockInfo.numHidden());
switch (state) {
case WAKE_LOCK_STATE_UNLOCKED:
aState.AssignLiteral("unlocked");
break;
case WAKE_LOCK_STATE_HIDDEN:
aState.AssignLiteral("locked-background");
break;
case WAKE_LOCK_STATE_VISIBLE:
aState.AssignLiteral("locked-foreground");
break;
}
}
void
PowerManagerService::Notify(const WakeLockInformation& aWakeLockInfo)
{
nsAutoString state;
ComputeWakeLockState(aWakeLockInfo, state);
/**
* Copy the listeners list before we walk through the callbacks
* because the callbacks may install new listeners. We expect no
* more than one listener per window, so it shouldn't be too long.
*/
AutoTArray<nsCOMPtr<nsIDOMMozWakeLockListener>, 2> listeners(mWakeLockListeners);
for (uint32_t i = 0; i < listeners.Length(); ++i) {
listeners[i]->Callback(aWakeLockInfo.topic(), state);
}
}
void
PowerManagerService::SyncProfile()
{
nsCOMPtr<nsIObserverService> obsServ = services::GetObserverService();
if (obsServ) {
NS_NAMED_LITERAL_STRING(context, "shutdown-persist");
obsServ->NotifyObservers(nullptr, "profile-change-net-teardown", context.get());
obsServ->NotifyObservers(nullptr, "profile-change-teardown", context.get());
obsServ->NotifyObservers(nullptr, "profile-before-change", context.get());
obsServ->NotifyObservers(nullptr, "profile-before-change-qm", context.get());
obsServ->NotifyObservers(nullptr, "profile-before-change-telemetry", context.get());
}
}
NS_IMETHODIMP
PowerManagerService::Reboot()
{
LOG_FUNCTION_AND_JS_STACK() // bug 839452
StartForceQuitWatchdog(eHalShutdownMode_Reboot, mWatchdogTimeoutSecs);
// To synchronize any unsaved user data before rebooting.
SyncProfile();
hal::Reboot();
MOZ_CRASH("hal::Reboot() shouldn't return");
}
NS_IMETHODIMP
PowerManagerService::PowerOff()
{
LOG_FUNCTION_AND_JS_STACK() // bug 839452
StartForceQuitWatchdog(eHalShutdownMode_PowerOff, mWatchdogTimeoutSecs);
// To synchronize any unsaved user data before powering off.
SyncProfile();
hal::PowerOff();
MOZ_CRASH("hal::PowerOff() shouldn't return");
}
NS_IMETHODIMP
PowerManagerService::Restart()
{
LOG_FUNCTION_AND_JS_STACK() // bug 839452
// FIXME/bug 796826 this implementation is currently gonk-specific,
// because it relies on the Gonk to initialize the Gecko processes to
// restart B2G. It's better to do it here to have a real "restart".
StartForceQuitWatchdog(eHalShutdownMode_Restart, mWatchdogTimeoutSecs);
// Ensure all content processes are dead before we continue
// restarting. This code is used to restart to apply updates, and
// if we don't join all the subprocesses, race conditions can cause
// them to see an inconsistent view of the application directory.
ContentParent::JoinAllSubprocesses();
// To synchronize any unsaved user data before restarting.
SyncProfile();
#ifdef XP_UNIX
sync();
#endif
_exit(0);
MOZ_CRASH("_exit() shouldn't return");
}
NS_IMETHODIMP
PowerManagerService::AddWakeLockListener(nsIDOMMozWakeLockListener *aListener)
{
if (mWakeLockListeners.Contains(aListener))
return NS_OK;
mWakeLockListeners.AppendElement(aListener);
return NS_OK;
}
NS_IMETHODIMP
PowerManagerService::RemoveWakeLockListener(nsIDOMMozWakeLockListener *aListener)
{
mWakeLockListeners.RemoveElement(aListener);
return NS_OK;
}
NS_IMETHODIMP
PowerManagerService::GetWakeLockState(const nsAString &aTopic, nsAString &aState)
{
WakeLockInformation info;
GetWakeLockInfo(aTopic, &info);
ComputeWakeLockState(info, aState);
return NS_OK;
}
already_AddRefed<WakeLock>
PowerManagerService::NewWakeLock(const nsAString& aTopic,
nsPIDOMWindowInner* aWindow,
mozilla::ErrorResult& aRv)
{
RefPtr<WakeLock> wakelock = new WakeLock();
aRv = wakelock->Init(aTopic, aWindow);
if (aRv.Failed()) {
return nullptr;
}
return wakelock.forget();
}
NS_IMETHODIMP
PowerManagerService::NewWakeLock(const nsAString &aTopic,
mozIDOMWindow *aWindow,
nsISupports **aWakeLock)
{
mozilla::ErrorResult rv;
RefPtr<WakeLock> wakelock =
NewWakeLock(aTopic, nsPIDOMWindowInner::From(aWindow), rv);
if (rv.Failed()) {
return rv.StealNSResult();
}
nsCOMPtr<nsIDOMEventListener> eventListener = wakelock.get();
eventListener.forget(aWakeLock);
return NS_OK;
}
already_AddRefed<WakeLock>
PowerManagerService::NewWakeLockOnBehalfOfProcess(const nsAString& aTopic,
ContentParent* aContentParent)
{
RefPtr<WakeLock> wakelock = new WakeLock();
nsresult rv = wakelock->Init(aTopic, aContentParent);
NS_ENSURE_SUCCESS(rv, nullptr);
return wakelock.forget();
}
} // namespace power
} // namespace dom
} // namespace mozilla
|
