diff options
Diffstat (limited to 'dom/base/nsGlobalWindow.cpp')
| -rw-r--r-- | dom/base/nsGlobalWindow.cpp | 360 |
1 files changed, 302 insertions, 58 deletions
diff --git a/dom/base/nsGlobalWindow.cpp b/dom/base/nsGlobalWindow.cpp index f784031f6..3d5c44a78 100644 --- a/dom/base/nsGlobalWindow.cpp +++ b/dom/base/nsGlobalWindow.cpp @@ -23,6 +23,7 @@ #include "mozilla/dom/StorageEvent.h" #include "mozilla/dom/StorageEventBinding.h" #include "mozilla/dom/Timeout.h" +#include "mozilla/dom/TimeoutHandler.h" #include "mozilla/IntegerPrintfMacros.h" #if defined(MOZ_WIDGET_ANDROID) || defined(MOZ_WIDGET_GONK) #include "mozilla/dom/WindowOrientationObserver.h" @@ -552,29 +553,284 @@ DialogValueHolder::Get(JSContext* aCx, JS::Handle<JSObject*> aScope, } } +class IdleRequestExecutor final : public nsIRunnable + , public nsICancelableRunnable + , public nsIIncrementalRunnable +{ +public: + explicit IdleRequestExecutor(nsGlobalWindow* aWindow) + : mDispatched(false) + , mDeadline(TimeStamp::Now()) + , mWindow(aWindow) + { + MOZ_DIAGNOSTIC_ASSERT(mWindow); + MOZ_DIAGNOSTIC_ASSERT(mWindow->IsInnerWindow()); + } + + NS_DECL_CYCLE_COLLECTING_ISUPPORTS + NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(IdleRequestExecutor, nsIRunnable) + + NS_DECL_NSIRUNNABLE + nsresult Cancel() override; + void SetDeadline(TimeStamp aDeadline) override; + + void MaybeDispatch(); +private: + ~IdleRequestExecutor() {} + + bool mDispatched; + TimeStamp mDeadline; + RefPtr<nsGlobalWindow> mWindow; +}; + +NS_IMPL_CYCLE_COLLECTION_CLASS(IdleRequestExecutor) + +NS_IMPL_CYCLE_COLLECTING_ADDREF(IdleRequestExecutor) +NS_IMPL_CYCLE_COLLECTING_RELEASE(IdleRequestExecutor) + +NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(IdleRequestExecutor) + NS_IMPL_CYCLE_COLLECTION_UNLINK(mWindow) +NS_IMPL_CYCLE_COLLECTION_UNLINK_END + +NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(IdleRequestExecutor) + NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mWindow) +NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END + +NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(IdleRequestExecutor) + NS_INTERFACE_MAP_ENTRY(nsIRunnable) + NS_INTERFACE_MAP_ENTRY(nsICancelableRunnable) + NS_INTERFACE_MAP_ENTRY(nsIIncrementalRunnable) + NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIRunnable) +NS_INTERFACE_MAP_END + +NS_IMETHODIMP +IdleRequestExecutor::Run() +{ + MOZ_ASSERT(NS_IsMainThread()); + + mDispatched = false; + if (mWindow) { + return mWindow->ExecuteIdleRequest(mDeadline); + } + + return NS_OK; +} + +nsresult +IdleRequestExecutor::Cancel() +{ + MOZ_ASSERT(NS_IsMainThread()); + + mWindow = nullptr; + return NS_OK; +} + void -nsGlobalWindow::PostThrottledIdleCallback() +IdleRequestExecutor::SetDeadline(TimeStamp aDeadline) { - AssertIsOnMainThread(); + MOZ_ASSERT(NS_IsMainThread()); - if (mThrottledIdleRequestCallbacks.isEmpty()) + if (!mWindow) { return; + } + + mDeadline = aDeadline; +} - RefPtr<IdleRequest> request(mThrottledIdleRequestCallbacks.popFirst()); - // ownership transferred from mThrottledIdleRequestCallbacks to - // mIdleRequestCallbacks - mIdleRequestCallbacks.insertBack(request); +void +IdleRequestExecutor::MaybeDispatch() +{ + // If we've already dispatched the executor we don't want to do it + // again. Also, if we've called IdleRequestExecutor::Cancel mWindow + // will be null, which indicates that we shouldn't dispatch this + // executor either. + if (mDispatched || !mWindow) { + return; + } + + mDispatched = true; + RefPtr<IdleRequestExecutor> request = this; NS_IdleDispatchToCurrentThread(request.forget()); } -/* static */ void -nsGlobalWindow::InsertIdleCallbackIntoList(IdleRequest* aRequest, - IdleRequests& aList) +class IdleRequestExecutorTimeoutHandler final : public TimeoutHandler +{ +public: + explicit IdleRequestExecutorTimeoutHandler(IdleRequestExecutor* aExecutor) + : mExecutor(aExecutor) + { + } + + NS_DECL_ISUPPORTS_INHERITED + NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(IdleRequestExecutorTimeoutHandler, + TimeoutHandler) + + nsresult Call() override + { + mExecutor->MaybeDispatch(); + return NS_OK; + } +private: + ~IdleRequestExecutorTimeoutHandler() {} + RefPtr<IdleRequestExecutor> mExecutor; +}; + +NS_IMPL_CYCLE_COLLECTION_INHERITED(IdleRequestExecutorTimeoutHandler, TimeoutHandler, mExecutor) + +NS_IMPL_ADDREF_INHERITED(IdleRequestExecutorTimeoutHandler, TimeoutHandler) +NS_IMPL_RELEASE_INHERITED(IdleRequestExecutorTimeoutHandler, TimeoutHandler) + +NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(IdleRequestExecutorTimeoutHandler) + NS_INTERFACE_MAP_ENTRY(nsITimeoutHandler) +NS_INTERFACE_MAP_END_INHERITING(TimeoutHandler) + +void +nsGlobalWindow::ScheduleIdleRequestDispatch() +{ + AssertIsOnMainThread(); + + if (mIdleRequestCallbacks.isEmpty()) { + if (mIdleRequestExecutor) { + mIdleRequestExecutor->Cancel(); + mIdleRequestExecutor = nullptr; + } + + return; + } + + if (!mIdleRequestExecutor) { + mIdleRequestExecutor = new IdleRequestExecutor(this); + } + + nsPIDOMWindowOuter* outer = GetOuterWindow(); + if (outer && outer->AsOuter()->IsBackground()) { + nsCOMPtr<nsITimeoutHandler> handler = new IdleRequestExecutorTimeoutHandler(mIdleRequestExecutor); + int32_t dummy; + // Set a timeout handler with a timeout of 0 ms to throttle idle + // callback requests coming from a backround window using + // background timeout throttling. + SetTimeoutOrInterval(handler, 0, false, + Timeout::Reason::eIdleCallbackTimeout, &dummy); + return; + } + + mIdleRequestExecutor->MaybeDispatch(); +} + +void +nsGlobalWindow::SuspendIdleRequests() +{ + if (mIdleRequestExecutor) { + mIdleRequestExecutor->Cancel(); + mIdleRequestExecutor = nullptr; + } +} + +void +nsGlobalWindow::ResumeIdleRequests() { - aList.insertBack(aRequest); + MOZ_ASSERT(!mIdleRequestExecutor); + + ScheduleIdleRequestDispatch(); +} + +void +nsGlobalWindow::InsertIdleCallback(IdleRequest* aRequest) +{ + AssertIsOnMainThread(); + mIdleRequestCallbacks.insertBack(aRequest); aRequest->AddRef(); } +void +nsGlobalWindow::RemoveIdleCallback(mozilla::dom::IdleRequest* aRequest) +{ + AssertIsOnMainThread(); + + if (aRequest->HasTimeout()) { + ClearTimeoutOrInterval(aRequest->GetTimeoutHandle(), + Timeout::Reason::eIdleCallbackTimeout); + } + + aRequest->removeFrom(mIdleRequestCallbacks); + aRequest->Release(); +} + +nsresult +nsGlobalWindow::RunIdleRequest(IdleRequest* aRequest, + DOMHighResTimeStamp aDeadline, + bool aDidTimeout) +{ + AssertIsOnMainThread(); + RefPtr<IdleRequest> request(aRequest); + RemoveIdleCallback(request); + return request->IdleRun(AsInner(), aDeadline, aDidTimeout); +} + +nsresult +nsGlobalWindow::ExecuteIdleRequest(TimeStamp aDeadline) +{ + AssertIsOnMainThread(); + RefPtr<IdleRequest> request = mIdleRequestCallbacks.getFirst(); + + if (!request) { + // There are no more idle requests, so stop scheduling idle + // request callbacks. + return NS_OK; + } + + DOMHighResTimeStamp deadline = 0.0; + + if (Performance* perf = GetPerformance()) { + deadline = perf->GetDOMTiming()->TimeStampToDOMHighRes(aDeadline); + } + + nsresult result = RunIdleRequest(request, deadline, false); + + ScheduleIdleRequestDispatch(); + return result; +} + +class IdleRequestTimeoutHandler final : public TimeoutHandler +{ +public: + IdleRequestTimeoutHandler(JSContext* aCx, + IdleRequest* aIdleRequest, + nsPIDOMWindowInner* aWindow) + : TimeoutHandler(aCx) + , mIdleRequest(aIdleRequest) + , mWindow(aWindow) + { + } + + NS_DECL_ISUPPORTS_INHERITED + NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(IdleRequestTimeoutHandler, + TimeoutHandler) + + nsresult Call() override + { + return nsGlobalWindow::Cast(mWindow)->RunIdleRequest(mIdleRequest, 0.0, true); + } + +private: + ~IdleRequestTimeoutHandler() {} + + RefPtr<IdleRequest> mIdleRequest; + nsCOMPtr<nsPIDOMWindowInner> mWindow; +}; + +NS_IMPL_CYCLE_COLLECTION_INHERITED(IdleRequestTimeoutHandler, + TimeoutHandler, + mIdleRequest, + mWindow) + +NS_IMPL_ADDREF_INHERITED(IdleRequestTimeoutHandler, TimeoutHandler) +NS_IMPL_RELEASE_INHERITED(IdleRequestTimeoutHandler, TimeoutHandler) + +NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(IdleRequestTimeoutHandler) + NS_INTERFACE_MAP_ENTRY(nsITimeoutHandler) +NS_INTERFACE_MAP_END_INHERITING(TimeoutHandler) + uint32_t nsGlobalWindow::RequestIdleCallback(JSContext* aCx, IdleRequestCallback& aCallback, @@ -584,33 +840,36 @@ nsGlobalWindow::RequestIdleCallback(JSContext* aCx, MOZ_RELEASE_ASSERT(IsInnerWindow()); AssertIsOnMainThread(); - uint32_t handle = ++mIdleRequestCallbackCounter; + uint32_t handle = mIdleRequestCallbackCounter++; RefPtr<IdleRequest> request = - new IdleRequest(aCx, AsInner(), aCallback, handle); + new IdleRequest(&aCallback, handle); if (aOptions.mTimeout.WasPassed()) { - aError = request->SetTimeout(aOptions.mTimeout.Value()); - if (NS_WARN_IF(aError.Failed())) { + int32_t timeoutHandle; + nsCOMPtr<nsITimeoutHandler> handler(new IdleRequestTimeoutHandler(aCx, request, AsInner())); + + nsresult rv = SetTimeoutOrInterval( + handler, aOptions.mTimeout.Value(), false, + Timeout::Reason::eIdleCallbackTimeout, &timeoutHandle); + + if (NS_WARN_IF(NS_FAILED(rv))) { return 0; } - } - nsGlobalWindow* outer = GetOuterWindowInternal(); - if (outer && outer->AsOuter()->IsBackground()) { - // mThrottledIdleRequestCallbacks now owns request - InsertIdleCallbackIntoList(request, mThrottledIdleRequestCallbacks); - - NS_DelayedDispatchToCurrentThread( - NewRunnableMethod(this, &nsGlobalWindow::PostThrottledIdleCallback), - 10000); - } else { - MOZ_ASSERT(mThrottledIdleRequestCallbacks.isEmpty()); + request->SetTimeoutHandle(timeoutHandle); + } - // mIdleRequestCallbacks now owns request - InsertIdleCallbackIntoList(request, mIdleRequestCallbacks); + // If the list of idle callback requests is not empty it means that + // we've already dispatched the first idle request. If we're + // suspended we should only queue the idle callback and not schedule + // it to run, that will be done in ResumeIdleRequest. + bool needsScheduling = !IsSuspended() && mIdleRequestCallbacks.isEmpty(); + // mIdleRequestCallbacks now owns request + InsertIdleCallback(request); - NS_IdleDispatchToCurrentThread(request.forget()); + if (needsScheduling) { + ScheduleIdleRequestDispatch(); } return handle; @@ -623,7 +882,7 @@ nsGlobalWindow::CancelIdleCallback(uint32_t aHandle) for (IdleRequest* r : mIdleRequestCallbacks) { if (r->Handle() == aHandle) { - r->Cancel(); + RemoveIdleCallback(r); break; } } @@ -632,29 +891,17 @@ nsGlobalWindow::CancelIdleCallback(uint32_t aHandle) void nsGlobalWindow::DisableIdleCallbackRequests() { - while (!mIdleRequestCallbacks.isEmpty()) { - RefPtr<IdleRequest> request = mIdleRequestCallbacks.popFirst(); - request->Cancel(); + if (mIdleRequestExecutor) { + mIdleRequestExecutor->Cancel(); + mIdleRequestExecutor = nullptr; } - while (!mThrottledIdleRequestCallbacks.isEmpty()) { - RefPtr<IdleRequest> request = mThrottledIdleRequestCallbacks.popFirst(); - request->Cancel(); - } -} - -void nsGlobalWindow::UnthrottleIdleCallbackRequests() -{ - AssertIsOnMainThread(); - - while (!mThrottledIdleRequestCallbacks.isEmpty()) { - RefPtr<IdleRequest> request(mThrottledIdleRequestCallbacks.popFirst()); - mIdleRequestCallbacks.insertBack(request); - NS_IdleDispatchToCurrentThread(request.forget()); + while (!mIdleRequestCallbacks.isEmpty()) { + RefPtr<IdleRequest> request = mIdleRequestCallbacks.getFirst(); + RemoveIdleCallback(request); } } - namespace mozilla { namespace dom { extern uint64_t @@ -1306,6 +1553,7 @@ nsGlobalWindow::nsGlobalWindow(nsGlobalWindow *aOuterWindow) mSerial(0), mIdleCallbackTimeoutCounter(1), mIdleRequestCallbackCounter(1), + mIdleRequestExecutor(nullptr), #ifdef DEBUG mSetOpenerWindowCalled(false), #endif @@ -2033,14 +2281,11 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INTERNAL(nsGlobalWindow) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mWakeLock) NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mPendingStorageEvents) + NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mIdleRequestExecutor) for (IdleRequest* request : tmp->mIdleRequestCallbacks) { cb.NoteNativeChild(request, NS_CYCLE_COLLECTION_PARTICIPANT(IdleRequest)); } - for (IdleRequest* request : tmp->mThrottledIdleRequestCallbacks) { - cb.NoteNativeChild(request, NS_CYCLE_COLLECTION_PARTICIPANT(IdleRequest)); - } - NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mIdleObservers) #ifdef MOZ_GAMEPAD @@ -2147,6 +2392,7 @@ NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsGlobalWindow) tmp->UnlinkHostObjectURIs(); + NS_IMPL_CYCLE_COLLECTION_UNLINK(mIdleRequestExecutor) tmp->DisableIdleCallbackRequests(); NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER @@ -10237,12 +10483,6 @@ void nsGlobalWindow::SetIsBackground(bool aIsBackground) ResetTimersForThrottleReduction(gMinBackgroundTimeoutValue); } - if (!aIsBackground) { - nsGlobalWindow* inner = GetCurrentInnerWindowInternal(); - if (inner) { - inner->UnthrottleIdleCallbackRequests(); - } - } #ifdef MOZ_GAMEPAD if (!aIsBackground) { nsGlobalWindow* inner = GetCurrentInnerWindowInternal(); @@ -12036,6 +12276,8 @@ nsGlobalWindow::Suspend() mozilla::dom::workers::SuspendWorkersForWindow(AsInner()); + SuspendIdleRequests(); + for (Timeout* t = mTimeouts.getFirst(); t; t = t->getNext()) { // Leave the timers with the current time remaining. This will // cause the timers to potentially fire when the window is @@ -12146,6 +12388,8 @@ nsGlobalWindow::Resume() t->AddRef(); } + ResumeIdleRequests(); + // Resume all of the workers for this window. We must do this // after timeouts since workers may have queued events that can trigger // a setTimeout(). |