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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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
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