mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-12-07 05:15:09 +00:00
251 lines
7.0 KiB
C++
251 lines
7.0 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/dom/ContentParent.h"
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#include "mozilla/Hal.h"
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#include "mozilla/HalWakeLock.h"
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#include "mozilla/ClearOnShutdown.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/Services.h"
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#include "nsIDOMWakeLockListener.h"
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#include "nsIDOMWindow.h"
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#include "nsIObserverService.h"
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#include "PowerManagerService.h"
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#include "WakeLock.h"
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// For _exit().
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#ifdef XP_WIN
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#include <process.h>
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#else
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#include <unistd.h>
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#endif
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#ifdef ANDROID
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#include <android/log.h>
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extern "C" char* PrintJSStack();
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static void LogFunctionAndJSStack(const char* funcname) {
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char *jsstack = PrintJSStack();
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__android_log_print(ANDROID_LOG_INFO, "PowerManagerService", \
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"Call to %s. The JS stack is:\n%s\n",
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funcname,
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jsstack ? jsstack : "<no JS stack>");
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}
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// bug 839452
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#define LOG_FUNCTION_AND_JS_STACK() \
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LogFunctionAndJSStack(__PRETTY_FUNCTION__);
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#else
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#define LOG_FUNCTION_AND_JS_STACK()
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#endif
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namespace mozilla {
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namespace dom {
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namespace power {
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using namespace hal;
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NS_IMPL_ISUPPORTS(PowerManagerService, nsIPowerManagerService)
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/* static */ StaticRefPtr<PowerManagerService> PowerManagerService::sSingleton;
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/* static */ already_AddRefed<PowerManagerService>
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PowerManagerService::GetInstance()
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{
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if (!sSingleton) {
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sSingleton = new PowerManagerService();
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sSingleton->Init();
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ClearOnShutdown(&sSingleton);
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}
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nsRefPtr<PowerManagerService> service = sSingleton.get();
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return service.forget();
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}
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void
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PowerManagerService::Init()
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{
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RegisterWakeLockObserver(this);
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// NB: default to *enabling* the watchdog even when the pref is
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// absent, in case the profile might be damaged and we need to
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// restart to repair it.
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mWatchdogTimeoutSecs =
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Preferences::GetInt("shutdown.watchdog.timeoutSecs", 10);
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}
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PowerManagerService::~PowerManagerService()
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{
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UnregisterWakeLockObserver(this);
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}
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void
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PowerManagerService::ComputeWakeLockState(const WakeLockInformation& aWakeLockInfo,
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nsAString &aState)
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{
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WakeLockState state = hal::ComputeWakeLockState(aWakeLockInfo.numLocks(),
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aWakeLockInfo.numHidden());
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switch (state) {
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case WAKE_LOCK_STATE_UNLOCKED:
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aState.AssignLiteral("unlocked");
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break;
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case WAKE_LOCK_STATE_HIDDEN:
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aState.AssignLiteral("locked-background");
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break;
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case WAKE_LOCK_STATE_VISIBLE:
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aState.AssignLiteral("locked-foreground");
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break;
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}
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}
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void
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PowerManagerService::Notify(const WakeLockInformation& aWakeLockInfo)
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{
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nsAutoString state;
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ComputeWakeLockState(aWakeLockInfo, state);
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/**
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* Copy the listeners list before we walk through the callbacks
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* because the callbacks may install new listeners. We expect no
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* more than one listener per window, so it shouldn't be too long.
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*/
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nsAutoTArray<nsCOMPtr<nsIDOMMozWakeLockListener>, 2> listeners(mWakeLockListeners);
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for (uint32_t i = 0; i < listeners.Length(); ++i) {
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listeners[i]->Callback(aWakeLockInfo.topic(), state);
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}
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}
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void
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PowerManagerService::SyncProfile()
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{
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nsCOMPtr<nsIObserverService> obsServ = services::GetObserverService();
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if (obsServ) {
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NS_NAMED_LITERAL_STRING(context, "shutdown-persist");
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obsServ->NotifyObservers(nullptr, "profile-change-net-teardown", context.get());
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obsServ->NotifyObservers(nullptr, "profile-change-teardown", context.get());
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obsServ->NotifyObservers(nullptr, "profile-before-change", context.get());
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obsServ->NotifyObservers(nullptr, "profile-before-change2", context.get());
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}
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}
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NS_IMETHODIMP
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PowerManagerService::Reboot()
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{
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LOG_FUNCTION_AND_JS_STACK() // bug 839452
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StartForceQuitWatchdog(eHalShutdownMode_Reboot, mWatchdogTimeoutSecs);
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// To synchronize any unsaved user data before rebooting.
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SyncProfile();
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hal::Reboot();
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MOZ_CRASH("hal::Reboot() shouldn't return");
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}
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NS_IMETHODIMP
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PowerManagerService::PowerOff()
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{
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LOG_FUNCTION_AND_JS_STACK() // bug 839452
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StartForceQuitWatchdog(eHalShutdownMode_PowerOff, mWatchdogTimeoutSecs);
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// To synchronize any unsaved user data before powering off.
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SyncProfile();
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hal::PowerOff();
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MOZ_CRASH("hal::PowerOff() shouldn't return");
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}
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NS_IMETHODIMP
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PowerManagerService::Restart()
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{
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LOG_FUNCTION_AND_JS_STACK() // bug 839452
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// FIXME/bug 796826 this implementation is currently gonk-specific,
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// because it relies on the Gonk to initialize the Gecko processes to
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// restart B2G. It's better to do it here to have a real "restart".
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StartForceQuitWatchdog(eHalShutdownMode_Restart, mWatchdogTimeoutSecs);
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// Ensure all content processes are dead before we continue
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// restarting. This code is used to restart to apply updates, and
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// if we don't join all the subprocesses, race conditions can cause
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// them to see an inconsistent view of the application directory.
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ContentParent::JoinAllSubprocesses();
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// To synchronize any unsaved user data before restarting.
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SyncProfile();
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#ifdef XP_UNIX
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sync();
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#endif
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_exit(0);
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MOZ_CRASH("_exit() shouldn't return");
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}
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NS_IMETHODIMP
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PowerManagerService::AddWakeLockListener(nsIDOMMozWakeLockListener *aListener)
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{
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if (mWakeLockListeners.Contains(aListener))
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return NS_OK;
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mWakeLockListeners.AppendElement(aListener);
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return NS_OK;
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}
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NS_IMETHODIMP
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PowerManagerService::RemoveWakeLockListener(nsIDOMMozWakeLockListener *aListener)
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{
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mWakeLockListeners.RemoveElement(aListener);
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return NS_OK;
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}
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NS_IMETHODIMP
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PowerManagerService::GetWakeLockState(const nsAString &aTopic, nsAString &aState)
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{
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WakeLockInformation info;
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GetWakeLockInfo(aTopic, &info);
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ComputeWakeLockState(info, aState);
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return NS_OK;
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}
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already_AddRefed<WakeLock>
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PowerManagerService::NewWakeLock(const nsAString& aTopic,
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nsIDOMWindow* aWindow,
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mozilla::ErrorResult& aRv)
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{
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nsRefPtr<WakeLock> wakelock = new WakeLock();
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aRv = wakelock->Init(aTopic, aWindow);
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if (aRv.Failed()) {
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return nullptr;
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}
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return wakelock.forget();
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}
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NS_IMETHODIMP
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PowerManagerService::NewWakeLock(const nsAString &aTopic,
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nsIDOMWindow *aWindow,
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nsISupports **aWakeLock)
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{
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mozilla::ErrorResult rv;
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nsRefPtr<WakeLock> wakelock = NewWakeLock(aTopic, aWindow, rv);
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if (rv.Failed()) {
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return rv.ErrorCode();
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}
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nsCOMPtr<nsIDOMEventListener> eventListener = wakelock.get();
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eventListener.forget(aWakeLock);
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return NS_OK;
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}
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already_AddRefed<WakeLock>
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PowerManagerService::NewWakeLockOnBehalfOfProcess(const nsAString& aTopic,
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ContentParent* aContentParent)
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{
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nsRefPtr<WakeLock> wakelock = new WakeLock();
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nsresult rv = wakelock->Init(aTopic, aContentParent);
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NS_ENSURE_SUCCESS(rv, nullptr);
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return wakelock.forget();
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}
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} // power
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} // dom
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} // mozilla
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