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fune/widget/android/nsAppShell.cpp
arthur.iakab c1fae83952 Backed out 16 changesets (bug 1478124) for failing android geckoview-junit CLOSED TREE 
Backed out changeset fce62c77a56b (bug 1478124)
Backed out changeset eb2fa3b5edf7 (bug 1478124)
Backed out changeset 8dacce59fcc0 (bug 1478124)
Backed out changeset 012fd0107204 (bug 1478124)
Backed out changeset 496aaf774697 (bug 1478124)
Backed out changeset 21f4fda03159 (bug 1478124)
Backed out changeset b0444e0bc801 (bug 1478124)
Backed out changeset d94039b19943 (bug 1478124)
Backed out changeset 5d85deac61c2 (bug 1478124)
Backed out changeset 929fd654c9df (bug 1478124)
Backed out changeset 1ddd80d9e91a (bug 1478124)
Backed out changeset b8d2dfdfc324 (bug 1478124)
Backed out changeset f500020a273a (bug 1478124)
Backed out changeset dd00365ebb55 (bug 1478124)
Backed out changeset 538e40c5ee13 (bug 1478124)
Backed out changeset bedaa9c437ad (bug 1478124)
2019-01-29 10:03:06 +02:00

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/* -*- Mode: c++; tab-width: 4; 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 "nsAppShell.h"
#include "base/basictypes.h"
#include "base/message_loop.h"
#include "base/task.h"
#include "mozilla/Hal.h"
#include "nsIScreen.h"
#include "nsIScreenManager.h"
#include "nsWindow.h"
#include "nsThreadUtils.h"
#include "nsICommandLineRunner.h"
#include "nsIObserverService.h"
#include "nsIAppStartup.h"
#include "nsIGeolocationProvider.h"
#include "nsCacheService.h"
#include "nsIDOMEventListener.h"
#include "nsIDOMWakeLockListener.h"
#include "nsIPowerManagerService.h"
#include "nsISpeculativeConnect.h"
#include "nsIURIFixup.h"
#include "nsCategoryManagerUtils.h"
#include "nsCDefaultURIFixup.h"
#include "nsToolkitCompsCID.h"
#include "nsGeoPosition.h"
#include "mozilla/ArrayUtils.h"
#include "mozilla/Telemetry.h"
#include "mozilla/Services.h"
#include "mozilla/Preferences.h"
#include "mozilla/Hal.h"
#include "mozilla/dom/TabChild.h"
#include "mozilla/intl/OSPreferences.h"
#include "mozilla/widget/ScreenManager.h"
#include "prenv.h"
#include "AndroidBridge.h"
#include "AndroidBridgeUtilities.h"
#include "AndroidSurfaceTexture.h"
#include "GeneratedJNINatives.h"
#include <android/log.h>
#include <pthread.h>
#include <wchar.h>
#include "GeckoProfiler.h"
#ifdef MOZ_ANDROID_HISTORY
# include "nsNetUtil.h"
# include "nsIURI.h"
# include "IHistory.h"
#endif
#ifdef MOZ_LOGGING
# include "mozilla/Logging.h"
#endif
#include "AndroidAlerts.h"
#include "AndroidUiThread.h"
#include "ANRReporter.h"
#include "GeckoBatteryManager.h"
#include "GeckoNetworkManager.h"
#include "GeckoProcessManager.h"
#include "GeckoScreenOrientation.h"
#include "GeckoSystemStateListener.h"
#include "GeckoVRManager.h"
#include "PrefsHelper.h"
#include "ScreenHelperAndroid.h"
#include "Telemetry.h"
#include "fennec/MemoryMonitor.h"
#include "fennec/ThumbnailHelper.h"
#include "WebExecutorSupport.h"
#ifdef DEBUG_ANDROID_EVENTS
# define EVLOG(args...) ALOG(args)
#else
# define EVLOG(args...) \
do { \
} while (0)
#endif
using namespace mozilla;
using namespace mozilla::widget;
nsIGeolocationUpdate* gLocationCallback = nullptr;
nsAppShell* nsAppShell::sAppShell;
StaticAutoPtr<Mutex> nsAppShell::sAppShellLock;
uint32_t nsAppShell::Queue::sLatencyCount[];
uint64_t nsAppShell::Queue::sLatencyTime[];
NS_IMPL_ISUPPORTS_INHERITED(nsAppShell, nsBaseAppShell, nsIObserver)
class WakeLockListener final : public nsIDOMMozWakeLockListener {
private:
~WakeLockListener() {}
public:
NS_DECL_ISUPPORTS;
nsresult Callback(const nsAString& topic, const nsAString& state) override {
java::GeckoAppShell::NotifyWakeLockChanged(topic, state);
return NS_OK;
}
};
NS_IMPL_ISUPPORTS(WakeLockListener, nsIDOMMozWakeLockListener)
nsCOMPtr<nsIPowerManagerService> sPowerManagerService = nullptr;
StaticRefPtr<WakeLockListener> sWakeLockListener;
class GeckoThreadSupport final
: public java::GeckoThread::Natives<GeckoThreadSupport> {
// When this number goes above 0, the app is paused. When less than or
// equal to zero, the app is resumed.
static int32_t sPauseCount;
public:
static void SpeculativeConnect(jni::String::Param aUriStr) {
if (!NS_IsMainThread()) {
// We will be on the main thread if the call was queued on the Java
// side during startup. Otherwise, the call was not queued, which
// means Gecko is already sufficiently loaded, and we don't really
// care about speculative connections at this point.
return;
}
nsCOMPtr<nsIIOService> ioServ = do_GetIOService();
nsCOMPtr<nsISpeculativeConnect> specConn = do_QueryInterface(ioServ);
if (!specConn) {
return;
}
nsCOMPtr<nsIURI> uri = nsAppShell::ResolveURI(aUriStr->ToCString());
if (!uri) {
return;
}
OriginAttributes attrs;
nsCOMPtr<nsIPrincipal> principal =
BasePrincipal::CreateCodebasePrincipal(uri, attrs);
specConn->SpeculativeConnect2(uri, principal, nullptr);
}
static bool WaitOnGecko(int64_t timeoutMillis) {
struct NoOpRunnable : Runnable {
NoOpRunnable() : Runnable("NoOpRunnable") {}
NS_IMETHOD Run() override { return NS_OK; }
};
struct NoOpEvent : nsAppShell::Event {
void Run() override {
// We cannot call NS_DispatchToMainThread from within
// WaitOnGecko itself because the thread that is calling
// WaitOnGecko may not be an nsThread, and may not be able to do
// a sync dispatch.
NS_DispatchToMainThread(do_AddRef(new NoOpRunnable()),
NS_DISPATCH_SYNC);
}
};
return nsAppShell::SyncRunEvent(
NoOpEvent(), nullptr, TimeDuration::FromMilliseconds(timeoutMillis));
}
static void OnPause() {
MOZ_ASSERT(NS_IsMainThread());
sPauseCount++;
// If sPauseCount is now 1, we just crossed the threshold from "resumed"
// "paused". so we should notify observers and so on.
if (sPauseCount != 1) {
return;
}
nsCOMPtr<nsIObserverService> obsServ =
mozilla::services::GetObserverService();
obsServ->NotifyObservers(nullptr, "application-background", nullptr);
obsServ->NotifyObservers(nullptr, "memory-pressure", u"heap-minimize");
// If we are OOM killed with the disk cache enabled, the entire
// cache will be cleared (bug 105843), so shut down the cache here
// and re-init on foregrounding
if (nsCacheService::GlobalInstance()) {
nsCacheService::GlobalInstance()->Shutdown();
}
// We really want to send a notification like profile-before-change,
// but profile-before-change ends up shutting some things down instead
// of flushing data
Preferences* prefs = static_cast<Preferences*>(Preferences::GetService());
if (prefs) {
// Force a main thread blocking save
prefs->SavePrefFileBlocking();
}
}
static void OnResume() {
MOZ_ASSERT(NS_IsMainThread());
sPauseCount--;
// If sPauseCount is now 0, we just crossed the threshold from "paused"
// to "resumed", so we should notify observers and so on.
if (sPauseCount != 0) {
return;
}
// If we are OOM killed with the disk cache enabled, the entire
// cache will be cleared (bug 105843), so shut down cache on backgrounding
// and re-init here
if (nsCacheService::GlobalInstance()) {
nsCacheService::GlobalInstance()->Init();
}
// We didn't return from one of our own activities, so restore
// to foreground status
nsCOMPtr<nsIObserverService> obsServ =
mozilla::services::GetObserverService();
obsServ->NotifyObservers(nullptr, "application-foreground", nullptr);
}
static void CreateServices(jni::String::Param aCategory,
jni::String::Param aData) {
MOZ_ASSERT(NS_IsMainThread());
nsCString category(aCategory->ToCString());
NS_CreateServicesFromCategory(category.get(),
nullptr, // aOrigin
category.get(),
aData ? aData->ToString().get() : nullptr);
}
static int64_t RunUiThreadCallback() { return RunAndroidUiTasks(); }
static void ForceQuit() {
nsCOMPtr<nsIAppStartup> appStartup =
do_GetService(NS_APPSTARTUP_CONTRACTID);
if (appStartup) {
appStartup->Quit(nsIAppStartup::eForceQuit);
}
}
static void Crash() {
printf_stderr("Intentionally crashing...\n");
MOZ_CRASH("intentional crash");
}
};
int32_t GeckoThreadSupport::sPauseCount;
class GeckoAppShellSupport final
: public java::GeckoAppShell::Natives<GeckoAppShellSupport> {
public:
static void ReportJavaCrash(const jni::Class::LocalRef& aCls,
jni::Throwable::Param aException,
jni::String::Param aStack) {
if (!jni::ReportException(aCls.Env(), aException.Get(), aStack.Get())) {
// Only crash below if crash reporter is initialized and annotation
// succeeded. Otherwise try other means of reporting the crash in
// Java.
return;
}
MOZ_CRASH("Uncaught Java exception");
}
static void NotifyObservers(jni::String::Param aTopic,
jni::String::Param aData) {
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aTopic);
nsCOMPtr<nsIObserverService> obsServ = services::GetObserverService();
if (!obsServ) {
return;
}
obsServ->NotifyObservers(nullptr, aTopic->ToCString().get(),
aData ? aData->ToString().get() : nullptr);
}
static void OnSensorChanged(int32_t aType, float aX, float aY, float aZ,
float aW, int64_t aTime) {
AutoTArray<float, 4> values;
switch (aType) {
// Bug 938035, transfer HAL data for orientation sensor to meet w3c
// spec, ex: HAL report alpha=90 means East but alpha=90 means West
// in w3c spec
case hal::SENSOR_ORIENTATION:
values.AppendElement(360.0f - aX);
values.AppendElement(-aY);
values.AppendElement(-aZ);
break;
case hal::SENSOR_LINEAR_ACCELERATION:
case hal::SENSOR_ACCELERATION:
case hal::SENSOR_GYROSCOPE:
case hal::SENSOR_PROXIMITY:
values.AppendElement(aX);
values.AppendElement(aY);
values.AppendElement(aZ);
break;
case hal::SENSOR_LIGHT:
values.AppendElement(aX);
break;
case hal::SENSOR_ROTATION_VECTOR:
case hal::SENSOR_GAME_ROTATION_VECTOR:
values.AppendElement(aX);
values.AppendElement(aY);
values.AppendElement(aZ);
values.AppendElement(aW);
break;
default:
__android_log_print(ANDROID_LOG_ERROR, "Gecko",
"Unknown sensor type %d", aType);
}
hal::SensorData sdata(hal::SensorType(aType), aTime, values);
hal::NotifySensorChange(sdata);
}
static void OnLocationChanged(double aLatitude, double aLongitude,
double aAltitude, float aAccuracy,
float aAltitudeAccuracy, float aHeading,
float aSpeed, int64_t aTime) {
if (!gLocationCallback) {
return;
}
RefPtr<nsIDOMGeoPosition> geoPosition(
new nsGeoPosition(aLatitude, aLongitude, aAltitude, aAccuracy,
aAltitudeAccuracy, aHeading, aSpeed, aTime));
gLocationCallback->Update(geoPosition);
}
static void NotifyUriVisited(jni::String::Param aUri) {
#ifdef MOZ_ANDROID_HISTORY
nsCOMPtr<IHistory> history = services::GetHistoryService();
nsCOMPtr<nsIURI> visitedURI;
if (history &&
NS_SUCCEEDED(NS_NewURI(getter_AddRefs(visitedURI), aUri->ToString()))) {
history->NotifyVisited(visitedURI);
}
#endif
}
static void NotifyAlertListener(jni::String::Param aName,
jni::String::Param aTopic,
jni::String::Param aCookie) {
if (!aName || !aTopic || !aCookie) {
return;
}
widget::AndroidAlerts::NotifyListener(aName->ToString(),
aTopic->ToCString().get(),
aCookie->ToString().get());
}
};
class BrowserLocaleManagerSupport final
: public java::BrowserLocaleManager::Natives<BrowserLocaleManagerSupport> {
public:
static void RefreshLocales() {
intl::OSPreferences::GetInstance()->Refresh();
}
};
nsAppShell::nsAppShell()
: mSyncRunFinished(*(sAppShellLock = new Mutex("nsAppShell")),
"nsAppShell.SyncRun"),
mSyncRunQuit(false) {
{
MutexAutoLock lock(*sAppShellLock);
sAppShell = this;
}
hal::Init();
if (!XRE_IsParentProcess()) {
if (jni::IsAvailable()) {
GeckoThreadSupport::Init();
GeckoAppShellSupport::Init();
mozilla::GeckoSystemStateListener::Init();
mozilla::widget::Telemetry::Init();
// Set the corresponding state in GeckoThread.
java::GeckoThread::SetState(java::GeckoThread::State::RUNNING());
}
return;
}
if (jni::IsAvailable()) {
ScreenManager& screenManager = ScreenManager::GetSingleton();
screenManager.SetHelper(mozilla::MakeUnique<ScreenHelperAndroid>());
// Initialize JNI and Set the corresponding state in GeckoThread.
AndroidBridge::ConstructBridge();
GeckoAppShellSupport::Init();
GeckoThreadSupport::Init();
mozilla::GeckoBatteryManager::Init();
mozilla::GeckoNetworkManager::Init();
mozilla::GeckoProcessManager::Init();
mozilla::GeckoScreenOrientation::Init();
mozilla::GeckoSystemStateListener::Init();
mozilla::PrefsHelper::Init();
mozilla::widget::Telemetry::Init();
mozilla::widget::WebExecutorSupport::Init();
nsWindow::InitNatives();
mozilla::gl::AndroidSurfaceTexture::Init();
if (jni::IsFennec()) {
BrowserLocaleManagerSupport::Init();
mozilla::ANRReporter::Init();
mozilla::MemoryMonitor::Init();
mozilla::ThumbnailHelper::Init();
}
java::GeckoThread::SetState(java::GeckoThread::State::JNI_READY());
CreateAndroidUiThread();
}
sPowerManagerService = do_GetService(POWERMANAGERSERVICE_CONTRACTID);
if (sPowerManagerService) {
sWakeLockListener = new WakeLockListener();
} else {
NS_WARNING(
"Failed to retrieve PowerManagerService, wakelocks will be broken!");
}
}
nsAppShell::~nsAppShell() {
{
// Release any thread waiting for a sync call to finish.
MutexAutoLock lock(*sAppShellLock);
sAppShell = nullptr;
mSyncRunFinished.NotifyAll();
}
while (mEventQueue.Pop(/* mayWait */ false)) {
NS_WARNING("Discarded event on shutdown");
}
if (sPowerManagerService) {
sPowerManagerService->RemoveWakeLockListener(sWakeLockListener);
sPowerManagerService = nullptr;
sWakeLockListener = nullptr;
}
hal::Shutdown();
if (jni::IsAvailable() && XRE_IsParentProcess()) {
DestroyAndroidUiThread();
AndroidBridge::DeconstructBridge();
}
}
void nsAppShell::NotifyNativeEvent() { mEventQueue.Signal(); }
void nsAppShell::RecordLatencies() {
if (!mozilla::Telemetry::CanRecordExtended()) {
return;
}
const mozilla::Telemetry::HistogramID timeIDs[] = {
mozilla::Telemetry::HistogramID::FENNEC_LOOP_UI_LATENCY,
mozilla::Telemetry::HistogramID::FENNEC_LOOP_OTHER_LATENCY};
static_assert(ArrayLength(Queue::sLatencyCount) == Queue::LATENCY_COUNT,
"Count array length mismatch");
static_assert(ArrayLength(Queue::sLatencyTime) == Queue::LATENCY_COUNT,
"Time array length mismatch");
static_assert(ArrayLength(timeIDs) == Queue::LATENCY_COUNT,
"Time ID array length mismatch");
for (size_t i = 0; i < Queue::LATENCY_COUNT; i++) {
if (!Queue::sLatencyCount[i]) {
continue;
}
const uint64_t time =
Queue::sLatencyTime[i] / 1000ull / Queue::sLatencyCount[i];
if (time) {
mozilla::Telemetry::Accumulate(
timeIDs[i], uint32_t(std::min<uint64_t>(UINT32_MAX, time)));
}
// Reset latency counts.
Queue::sLatencyCount[i] = 0;
Queue::sLatencyTime[i] = 0;
}
}
#define PREFNAME_COALESCE_TOUCHES "dom.event.touch.coalescing.enabled"
static const char* kObservedPrefs[] = {PREFNAME_COALESCE_TOUCHES, nullptr};
nsresult nsAppShell::Init() {
nsresult rv = nsBaseAppShell::Init();
nsCOMPtr<nsIObserverService> obsServ =
mozilla::services::GetObserverService();
if (obsServ) {
obsServ->AddObserver(this, "browser-delayed-startup-finished", false);
obsServ->AddObserver(this, "profile-after-change", false);
obsServ->AddObserver(this, "quit-application", false);
obsServ->AddObserver(this, "quit-application-granted", false);
obsServ->AddObserver(this, "xpcom-shutdown", false);
if (XRE_IsParentProcess()) {
obsServ->AddObserver(this, "chrome-document-loaded", false);
} else {
obsServ->AddObserver(this, "content-document-global-created", false);
obsServ->AddObserver(this, "geckoview-content-global-transferred", false);
}
}
if (sPowerManagerService)
sPowerManagerService->AddWakeLockListener(sWakeLockListener);
Preferences::AddStrongObservers(this, kObservedPrefs);
mAllowCoalescingTouches =
Preferences::GetBool(PREFNAME_COALESCE_TOUCHES, true);
return rv;
}
NS_IMETHODIMP
nsAppShell::Observe(nsISupports* aSubject, const char* aTopic,
const char16_t* aData) {
bool removeObserver = false;
if (!strcmp(aTopic, "xpcom-shutdown")) {
{
// Release any thread waiting for a sync call to finish.
mozilla::MutexAutoLock shellLock(*sAppShellLock);
mSyncRunQuit = true;
mSyncRunFinished.NotifyAll();
}
// We need to ensure no observers stick around after XPCOM shuts down
// or we'll see crashes, as the app shell outlives XPConnect.
mObserversHash.Clear();
return nsBaseAppShell::Observe(aSubject, aTopic, aData);
} else if (!strcmp(aTopic, NS_PREFBRANCH_PREFCHANGE_TOPIC_ID) && aData &&
nsDependentString(aData).Equals(
NS_LITERAL_STRING(PREFNAME_COALESCE_TOUCHES))) {
mAllowCoalescingTouches =
Preferences::GetBool(PREFNAME_COALESCE_TOUCHES, true);
return NS_OK;
} else if (!strcmp(aTopic, "browser-delayed-startup-finished")) {
NS_CreateServicesFromCategory("browser-delayed-startup-finished", nullptr,
"browser-delayed-startup-finished");
} else if (!strcmp(aTopic, "profile-after-change")) {
if (jni::IsAvailable()) {
java::GeckoThread::SetState(java::GeckoThread::State::PROFILE_READY());
// Gecko on Android follows the Android app model where it never
// stops until it is killed by the system or told explicitly to
// quit. Therefore, we should *not* exit Gecko when there is no
// window or the last window is closed. nsIAppStartup::Quit will
// still force Gecko to exit.
nsCOMPtr<nsIAppStartup> appStartup =
do_GetService(NS_APPSTARTUP_CONTRACTID);
if (appStartup) {
appStartup->EnterLastWindowClosingSurvivalArea();
}
}
removeObserver = true;
} else if (!strcmp(aTopic, "chrome-document-loaded")) {
// Set the global ready state and enable the window event dispatcher
// for this particular GeckoView.
nsCOMPtr<dom::Document> doc = do_QueryInterface(aSubject);
MOZ_ASSERT(doc);
if (const RefPtr<nsWindow> window = nsWindow::From(doc->GetWindow())) {
if (jni::IsAvailable()) {
// When our first window has loaded, assume any JS
// initialization has run and set Gecko to ready.
java::GeckoThread::CheckAndSetState(
java::GeckoThread::State::PROFILE_READY(),
java::GeckoThread::State::RUNNING());
}
window->OnGeckoViewReady();
}
} else if (!strcmp(aTopic, "quit-application")) {
if (jni::IsAvailable()) {
const bool restarting =
aData && NS_LITERAL_STRING("restart").Equals(aData);
java::GeckoThread::SetState(restarting
? java::GeckoThread::State::RESTARTING()
: java::GeckoThread::State::EXITING());
}
removeObserver = true;
} else if (!strcmp(aTopic, "quit-application-granted")) {
if (jni::IsAvailable()) {
// We are told explicitly to quit, perhaps due to
// nsIAppStartup::Quit being called. We should release our hold on
// nsIAppStartup and let it continue to quit.
nsCOMPtr<nsIAppStartup> appStartup =
do_GetService(NS_APPSTARTUP_CONTRACTID);
if (appStartup) {
appStartup->ExitLastWindowClosingSurvivalArea();
}
}
removeObserver = true;
} else if (!strcmp(aTopic, "nsPref:changed")) {
if (jni::IsAvailable()) {
mozilla::PrefsHelper::OnPrefChange(aData);
}
} else if (!strcmp(aTopic, "content-document-global-created")) {
// Associate the PuppetWidget of the newly-created TabChild with a
// GeckoEditableChild instance.
MOZ_ASSERT(!XRE_IsParentProcess());
nsCOMPtr<mozIDOMWindowProxy> domWindow = do_QueryInterface(aSubject);
MOZ_ASSERT(domWindow);
nsCOMPtr<nsIWidget> domWidget = widget::WidgetUtils::DOMWindowToWidget(
nsPIDOMWindowOuter::From(domWindow));
NS_ENSURE_TRUE(domWidget, NS_OK);
widget::GeckoEditableSupport::SetOnTabChild(domWidget->GetOwningTabChild());
} else if (!strcmp(aTopic, "geckoview-content-global-transferred")) {
// We're transferring to a new GeckoEditableParent, so notify the
// existing GeckoEditableChild instance associated with the docshell.
nsCOMPtr<nsIDocShell> docShell = do_QueryInterface(aSubject);
widget::GeckoEditableSupport::SetOnTabChild(
dom::TabChild::GetFrom(docShell));
}
if (removeObserver) {
nsCOMPtr<nsIObserverService> obsServ =
mozilla::services::GetObserverService();
if (obsServ) {
obsServ->RemoveObserver(this, aTopic);
}
}
return NS_OK;
}
bool nsAppShell::ProcessNextNativeEvent(bool mayWait) {
EVLOG("nsAppShell::ProcessNextNativeEvent %d", mayWait);
AUTO_PROFILER_LABEL("nsAppShell::ProcessNextNativeEvent", OTHER);
mozilla::UniquePtr<Event> curEvent;
{
curEvent = mEventQueue.Pop(/* mayWait */ false);
if (!curEvent && mayWait) {
// This processes messages in the Android Looper. Note that we only
// get here if the normal Gecko event loop has been awoken
// (bug 750713). Looper messages effectively have the lowest
// priority because we only process them before we're about to
// wait for new events.
if (jni::IsAvailable() && XRE_IsParentProcess() &&
AndroidBridge::Bridge()->PumpMessageLoop()) {
return true;
}
AUTO_PROFILER_LABEL("nsAppShell::ProcessNextNativeEvent:Wait", IDLE);
mozilla::BackgroundHangMonitor().NotifyWait();
AUTO_PROFILER_THREAD_SLEEP;
curEvent = mEventQueue.Pop(/* mayWait */ true);
}
}
if (!curEvent) return false;
mozilla::BackgroundHangMonitor().NotifyActivity();
curEvent->Run();
return true;
}
bool nsAppShell::SyncRunEvent(
Event&& event, UniquePtr<Event> (*eventFactory)(UniquePtr<Event>&&),
const TimeDuration timeout) {
// Perform the call on the Gecko thread in a separate lambda, and wait
// on the monitor on the current thread.
MOZ_ASSERT(!NS_IsMainThread());
// This is the lock to check that app shell is still alive,
// and to wait on for the sync call to complete.
mozilla::MutexAutoLock shellLock(*sAppShellLock);
nsAppShell* const appShell = sAppShell;
if (MOZ_UNLIKELY(!appShell)) {
// Post-shutdown.
return false;
}
bool finished = false;
auto runAndNotify = [&event, &finished] {
nsAppShell* const appShell = nsAppShell::Get();
if (MOZ_UNLIKELY(!appShell || appShell->mSyncRunQuit)) {
return false;
}
event.Run();
finished = true;
mozilla::MutexAutoLock shellLock(*sAppShellLock);
appShell->mSyncRunFinished.NotifyAll();
return finished;
};
UniquePtr<Event> runAndNotifyEvent =
mozilla::MakeUnique<LambdaEvent<decltype(runAndNotify)>>(
std::move(runAndNotify));
if (eventFactory) {
runAndNotifyEvent = (*eventFactory)(std::move(runAndNotifyEvent));
}
appShell->mEventQueue.Post(std::move(runAndNotifyEvent));
while (!finished && MOZ_LIKELY(sAppShell && !sAppShell->mSyncRunQuit)) {
appShell->mSyncRunFinished.Wait(timeout);
}
return finished;
}
already_AddRefed<nsIURI> nsAppShell::ResolveURI(const nsCString& aUriStr) {
nsCOMPtr<nsIIOService> ioServ = do_GetIOService();
nsCOMPtr<nsIURI> uri;
if (NS_SUCCEEDED(
ioServ->NewURI(aUriStr, nullptr, nullptr, getter_AddRefs(uri)))) {
return uri.forget();
}
nsCOMPtr<nsIURIFixup> fixup = do_GetService(NS_URIFIXUP_CONTRACTID);
if (fixup && NS_SUCCEEDED(fixup->CreateFixupURI(aUriStr, 0, nullptr,
getter_AddRefs(uri)))) {
return uri.forget();
}
return nullptr;
}
nsresult nsAppShell::AddObserver(const nsAString& aObserverKey,
nsIObserver* aObserver) {
NS_ASSERTION(aObserver != nullptr,
"nsAppShell::AddObserver: aObserver is null!");
mObserversHash.Put(aObserverKey, aObserver);
return NS_OK;
}
// Used by IPC code
namespace mozilla {
bool ProcessNextEvent() {
nsAppShell* const appShell = nsAppShell::Get();
if (!appShell) {
return false;
}
return appShell->ProcessNextNativeEvent(true) ? true : false;
}
void NotifyEvent() {
nsAppShell* const appShell = nsAppShell::Get();
if (!appShell) {
return;
}
appShell->NotifyNativeEvent();
}
} // namespace mozilla
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