mirror of
https://github.com/mozilla/gecko-dev.git
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94b151e6ac
This kinda papers over the issue. There's a somewhat deeper problem here where creating an <object> element inside a static document creates a non-print presshell / pres context / etc. But let's address the regression for now, since this is harmless and trivial. Differential Revision: https://phabricator.services.mozilla.com/D171370
3309 lines
115 KiB
C++
3309 lines
115 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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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/*
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* Code to notify things that animate before a refresh, at an appropriate
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* refresh rate. (Perhaps temporary, until replaced by compositor.)
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*
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* Chrome and each tab have their own RefreshDriver, which in turn
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* hooks into one of a few global timer based on RefreshDriverTimer,
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* defined below. There are two main global timers -- one for active
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* animations, and one for inactive ones. These are implemented as
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* subclasses of RefreshDriverTimer; see below for a description of
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* their implementations. In the future, additional timer types may
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* implement things like blocking on vsync.
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*/
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#include "nsRefreshDriver.h"
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#include "mozilla/DataMutex.h"
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#include "nsThreadUtils.h"
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#ifdef XP_WIN
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# include <windows.h>
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// mmsystem isn't part of WIN32_LEAN_AND_MEAN, so we have
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// to manually include it
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# include <mmsystem.h>
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# include "WinUtils.h"
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#endif
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#include "mozilla/AnimationEventDispatcher.h"
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#include "mozilla/ArrayUtils.h"
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#include "mozilla/Assertions.h"
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#include "mozilla/AutoRestore.h"
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#include "mozilla/BasePrincipal.h"
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#include "mozilla/CycleCollectedJSContext.h"
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#include "mozilla/DebugOnly.h"
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#include "mozilla/DisplayPortUtils.h"
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#include "mozilla/InputTaskManager.h"
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#include "mozilla/IntegerRange.h"
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#include "mozilla/PresShell.h"
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#include "nsITimer.h"
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#include "nsLayoutUtils.h"
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#include "nsPresContext.h"
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#include "nsComponentManagerUtils.h"
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#include "mozilla/Logging.h"
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#include "mozilla/dom/Document.h"
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#include "mozilla/dom/DocumentInlines.h"
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#include "nsIXULRuntime.h"
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#include "jsapi.h"
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#include "nsContentUtils.h"
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#include "mozilla/PendingAnimationTracker.h"
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#include "mozilla/PendingFullscreenEvent.h"
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#include "mozilla/dom/PerformanceMainThread.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/StaticPrefs_apz.h"
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#include "mozilla/StaticPrefs_gfx.h"
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#include "mozilla/StaticPrefs_idle_period.h"
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#include "mozilla/StaticPrefs_layout.h"
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#include "mozilla/StaticPrefs_page_load.h"
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#include "nsViewManager.h"
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#include "GeckoProfiler.h"
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#include "mozilla/dom/BrowserChild.h"
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#include "mozilla/dom/CallbackDebuggerNotification.h"
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#include "mozilla/dom/Event.h"
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#include "mozilla/dom/Performance.h"
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#include "mozilla/dom/Selection.h"
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#include "mozilla/dom/VsyncMainChild.h"
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#include "mozilla/dom/WindowBinding.h"
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#include "mozilla/layers/WebRenderLayerManager.h"
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#include "mozilla/RestyleManager.h"
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#include "mozilla/TaskController.h"
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#include "imgIContainer.h"
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#include "mozilla/dom/ScriptSettings.h"
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#include "nsDocShell.h"
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#include "nsISimpleEnumerator.h"
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#include "nsJSEnvironment.h"
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#include "mozilla/ScopeExit.h"
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#include "mozilla/Telemetry.h"
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#include "mozilla/ipc/BackgroundChild.h"
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#include "mozilla/ipc/PBackgroundChild.h"
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#include "VsyncSource.h"
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#include "mozilla/VsyncDispatcher.h"
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#include "mozilla/Unused.h"
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#include "mozilla/TimelineConsumers.h"
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#include "nsAnimationManager.h"
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#include "nsDisplayList.h"
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#include "nsDOMNavigationTiming.h"
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#include "nsTransitionManager.h"
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#if defined(MOZ_WIDGET_ANDROID)
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# include "VRManagerChild.h"
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#endif // defined(MOZ_WIDGET_ANDROID)
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#include "nsXULPopupManager.h"
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#include <numeric>
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using namespace mozilla;
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using namespace mozilla::widget;
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using namespace mozilla::ipc;
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using namespace mozilla::dom;
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using namespace mozilla::layout;
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static mozilla::LazyLogModule sRefreshDriverLog("nsRefreshDriver");
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#define LOG(...) \
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MOZ_LOG(sRefreshDriverLog, mozilla::LogLevel::Debug, (__VA_ARGS__))
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// after 10 minutes, stop firing off inactive timers
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#define DEFAULT_INACTIVE_TIMER_DISABLE_SECONDS 600
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// The number of seconds spent skipping frames because we are waiting for the
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// compositor before logging.
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#if defined(MOZ_ASAN)
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# define REFRESH_WAIT_WARNING 5
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#elif defined(DEBUG) && !defined(MOZ_VALGRIND)
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# define REFRESH_WAIT_WARNING 5
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#elif defined(DEBUG) && defined(MOZ_VALGRIND)
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# define REFRESH_WAIT_WARNING (RUNNING_ON_VALGRIND ? 20 : 5)
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#elif defined(MOZ_VALGRIND)
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# define REFRESH_WAIT_WARNING (RUNNING_ON_VALGRIND ? 10 : 1)
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#else
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# define REFRESH_WAIT_WARNING 1
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#endif
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MOZ_MAKE_ENUM_CLASS_BITWISE_OPERATORS(nsRefreshDriver::TickReasons);
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namespace {
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// The number outstanding nsRefreshDrivers (that have been created but not
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// disconnected). When this reaches zero we will call
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// nsRefreshDriver::Shutdown.
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static uint32_t sRefreshDriverCount = 0;
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// RAII-helper for recording elapsed duration for refresh tick phases.
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class AutoRecordPhase {
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public:
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explicit AutoRecordPhase(double* aResultMs)
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: mTotalMs(aResultMs), mStartTime(TimeStamp::Now()) {
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MOZ_ASSERT(mTotalMs);
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}
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~AutoRecordPhase() {
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*mTotalMs = (TimeStamp::Now() - mStartTime).ToMilliseconds();
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}
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private:
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double* mTotalMs;
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mozilla::TimeStamp mStartTime;
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};
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} // namespace
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namespace mozilla {
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static TimeStamp sMostRecentHighRateVsync;
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/*
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* The base class for all global refresh driver timers. It takes care
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* of managing the list of refresh drivers attached to them and
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* provides interfaces for querying/setting the rate and actually
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* running a timer 'Tick'. Subclasses must implement StartTimer(),
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* StopTimer(), and ScheduleNextTick() -- the first two just
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* start/stop whatever timer mechanism is in use, and ScheduleNextTick
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* is called at the start of the Tick() implementation to set a time
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* for the next tick.
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*/
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class RefreshDriverTimer {
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public:
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RefreshDriverTimer() = default;
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NS_INLINE_DECL_REFCOUNTING(RefreshDriverTimer)
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virtual void AddRefreshDriver(nsRefreshDriver* aDriver) {
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LOG("[%p] AddRefreshDriver %p", this, aDriver);
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bool startTimer =
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mContentRefreshDrivers.IsEmpty() && mRootRefreshDrivers.IsEmpty();
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if (IsRootRefreshDriver(aDriver)) {
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NS_ASSERTION(!mRootRefreshDrivers.Contains(aDriver),
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"Adding a duplicate root refresh driver!");
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mRootRefreshDrivers.AppendElement(aDriver);
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} else {
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NS_ASSERTION(!mContentRefreshDrivers.Contains(aDriver),
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"Adding a duplicate content refresh driver!");
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mContentRefreshDrivers.AppendElement(aDriver);
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}
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if (startTimer) {
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StartTimer();
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}
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}
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void RemoveRefreshDriver(nsRefreshDriver* aDriver) {
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LOG("[%p] RemoveRefreshDriver %p", this, aDriver);
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if (IsRootRefreshDriver(aDriver)) {
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NS_ASSERTION(mRootRefreshDrivers.Contains(aDriver),
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"RemoveRefreshDriver for a refresh driver that's not in the "
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"root refresh list!");
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mRootRefreshDrivers.RemoveElement(aDriver);
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} else {
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nsPresContext* pc = aDriver->GetPresContext();
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nsPresContext* rootContext = pc ? pc->GetRootPresContext() : nullptr;
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// During PresContext shutdown, we can't accurately detect
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// if a root refresh driver exists or not. Therefore, we have to
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// search and find out which list this driver exists in.
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if (!rootContext) {
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if (mRootRefreshDrivers.Contains(aDriver)) {
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mRootRefreshDrivers.RemoveElement(aDriver);
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} else {
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NS_ASSERTION(mContentRefreshDrivers.Contains(aDriver),
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"RemoveRefreshDriver without a display root for a "
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"driver that is not in the content refresh list");
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mContentRefreshDrivers.RemoveElement(aDriver);
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}
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} else {
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NS_ASSERTION(mContentRefreshDrivers.Contains(aDriver),
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"RemoveRefreshDriver for a driver that is not in the "
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"content refresh list");
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mContentRefreshDrivers.RemoveElement(aDriver);
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}
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}
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bool stopTimer =
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mContentRefreshDrivers.IsEmpty() && mRootRefreshDrivers.IsEmpty();
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if (stopTimer) {
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StopTimer();
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}
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}
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TimeStamp MostRecentRefresh() const { return mLastFireTime; }
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VsyncId MostRecentRefreshVsyncId() const { return mLastFireId; }
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virtual TimeDuration GetTimerRate() = 0;
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TimeStamp GetIdleDeadlineHint(TimeStamp aDefault) {
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MOZ_ASSERT(NS_IsMainThread());
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TimeStamp mostRecentRefresh = MostRecentRefresh();
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TimeDuration refreshPeriod = GetTimerRate();
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TimeStamp idleEnd = mostRecentRefresh + refreshPeriod;
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bool inHighRateMode = nsRefreshDriver::IsInHighRateMode();
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// If we haven't painted for some time, then guess that we won't paint
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// again for a while, so the refresh driver is not a good way to predict
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// idle time.
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if (!inHighRateMode &&
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(idleEnd +
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refreshPeriod *
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StaticPrefs::layout_idle_period_required_quiescent_frames() <
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TimeStamp::Now())) {
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return aDefault;
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}
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// End the predicted idle time a little early, the amount controlled by a
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// pref, to prevent overrunning the idle time and delaying a frame.
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// But do that only if we aren't in high rate mode.
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idleEnd =
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idleEnd -
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TimeDuration::FromMilliseconds(
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inHighRateMode ? 0 : StaticPrefs::layout_idle_period_time_limit());
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return idleEnd < aDefault ? idleEnd : aDefault;
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}
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Maybe<TimeStamp> GetNextTickHint() {
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MOZ_ASSERT(NS_IsMainThread());
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TimeStamp nextTick = MostRecentRefresh() + GetTimerRate();
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return nextTick < TimeStamp::Now() ? Nothing() : Some(nextTick);
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}
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// Returns null if the RefreshDriverTimer is attached to several
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// RefreshDrivers. That may happen for example when there are
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// several windows open.
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nsPresContext* GetPresContextForOnlyRefreshDriver() {
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if (mRootRefreshDrivers.Length() == 1 && mContentRefreshDrivers.IsEmpty()) {
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return mRootRefreshDrivers[0]->GetPresContext();
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}
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if (mContentRefreshDrivers.Length() == 1 && mRootRefreshDrivers.IsEmpty()) {
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return mContentRefreshDrivers[0]->GetPresContext();
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}
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return nullptr;
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}
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bool IsAnyToplevelContentPageLoading() {
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for (nsTArray<RefPtr<nsRefreshDriver>>* drivers :
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{&mRootRefreshDrivers, &mContentRefreshDrivers}) {
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for (RefPtr<nsRefreshDriver>& driver : *drivers) {
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if (nsPresContext* pc = driver->GetPresContext()) {
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if (pc->Document()->IsTopLevelContentDocument() &&
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pc->Document()->GetReadyStateEnum() <
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Document::READYSTATE_COMPLETE) {
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return true;
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}
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}
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}
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}
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return false;
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}
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protected:
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virtual ~RefreshDriverTimer() {
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MOZ_ASSERT(
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mContentRefreshDrivers.Length() == 0,
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"Should have removed all content refresh drivers from here by now!");
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MOZ_ASSERT(
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mRootRefreshDrivers.Length() == 0,
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"Should have removed all root refresh drivers from here by now!");
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}
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virtual void StartTimer() = 0;
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virtual void StopTimer() = 0;
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virtual void ScheduleNextTick(TimeStamp aNowTime) = 0;
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public:
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virtual bool IsTicking() const = 0;
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protected:
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bool IsRootRefreshDriver(nsRefreshDriver* aDriver) {
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nsPresContext* pc = aDriver->GetPresContext();
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nsPresContext* rootContext = pc ? pc->GetRootPresContext() : nullptr;
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if (!rootContext) {
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return false;
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}
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return aDriver == rootContext->RefreshDriver();
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}
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/*
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* Actually runs a tick, poking all the attached RefreshDrivers.
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* Grabs the "now" time via TimeStamp::Now().
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*/
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void Tick() {
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TimeStamp now = TimeStamp::Now();
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Tick(VsyncId(), now);
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}
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void TickRefreshDrivers(VsyncId aId, TimeStamp aNow,
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nsTArray<RefPtr<nsRefreshDriver>>& aDrivers) {
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if (aDrivers.IsEmpty()) {
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return;
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}
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for (nsRefreshDriver* driver : aDrivers.Clone()) {
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// don't poke this driver if it's in test mode
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if (driver->IsTestControllingRefreshesEnabled()) {
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continue;
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}
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TickDriver(driver, aId, aNow);
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}
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}
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/*
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* Tick the refresh drivers based on the given timestamp.
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*/
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void Tick(VsyncId aId, TimeStamp now) {
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ScheduleNextTick(now);
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mLastFireTime = now;
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mLastFireId = aId;
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LOG("[%p] ticking drivers...", this);
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TickRefreshDrivers(aId, now, mContentRefreshDrivers);
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TickRefreshDrivers(aId, now, mRootRefreshDrivers);
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LOG("[%p] done.", this);
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}
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static void TickDriver(nsRefreshDriver* driver, VsyncId aId, TimeStamp now) {
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driver->Tick(aId, now);
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}
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TimeStamp mLastFireTime;
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VsyncId mLastFireId;
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TimeStamp mTargetTime;
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nsTArray<RefPtr<nsRefreshDriver>> mContentRefreshDrivers;
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nsTArray<RefPtr<nsRefreshDriver>> mRootRefreshDrivers;
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// useful callback for nsITimer-based derived classes, here
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// because of c++ protected shenanigans
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static void TimerTick(nsITimer* aTimer, void* aClosure) {
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RefPtr<RefreshDriverTimer> timer =
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static_cast<RefreshDriverTimer*>(aClosure);
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timer->Tick();
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}
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};
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/*
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* A RefreshDriverTimer that uses a nsITimer as the underlying timer. Note that
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* this is a ONE_SHOT timer, not a repeating one! Subclasses are expected to
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* implement ScheduleNextTick and intelligently calculate the next time to tick,
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* and to reset mTimer. Using a repeating nsITimer gets us into a lot of pain
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* with its attempt at intelligent slack removal and such, so we don't do it.
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*/
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class SimpleTimerBasedRefreshDriverTimer : public RefreshDriverTimer {
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public:
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/*
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* aRate -- the delay, in milliseconds, requested between timer firings
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*/
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explicit SimpleTimerBasedRefreshDriverTimer(double aRate) {
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SetRate(aRate);
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mTimer = NS_NewTimer();
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}
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virtual ~SimpleTimerBasedRefreshDriverTimer() override { StopTimer(); }
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// will take effect at next timer tick
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virtual void SetRate(double aNewRate) {
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mRateMilliseconds = aNewRate;
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mRateDuration = TimeDuration::FromMilliseconds(mRateMilliseconds);
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}
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double GetRate() const { return mRateMilliseconds; }
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TimeDuration GetTimerRate() override { return mRateDuration; }
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protected:
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void StartTimer() override {
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// pretend we just fired, and we schedule the next tick normally
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mLastFireTime = TimeStamp::Now();
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mLastFireId = VsyncId();
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mTargetTime = mLastFireTime + mRateDuration;
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uint32_t delay = static_cast<uint32_t>(mRateMilliseconds);
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mTimer->InitWithNamedFuncCallback(
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TimerTick, this, delay, nsITimer::TYPE_ONE_SHOT,
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"SimpleTimerBasedRefreshDriverTimer::StartTimer");
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}
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void StopTimer() override { mTimer->Cancel(); }
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double mRateMilliseconds;
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TimeDuration mRateDuration;
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RefPtr<nsITimer> mTimer;
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};
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/*
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* A refresh driver that listens to vsync events and ticks the refresh driver
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* on vsync intervals. We throttle the refresh driver if we get too many
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* vsync events and wait to catch up again.
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*/
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class VsyncRefreshDriverTimer : public RefreshDriverTimer {
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public:
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// This is used in the parent process for all platforms except Linux Wayland.
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static RefPtr<VsyncRefreshDriverTimer>
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CreateForParentProcessWithGlobalVsync() {
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MOZ_RELEASE_ASSERT(XRE_IsParentProcess());
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MOZ_RELEASE_ASSERT(NS_IsMainThread());
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RefPtr<VsyncDispatcher> vsyncDispatcher =
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gfxPlatform::GetPlatform()->GetGlobalVsyncDispatcher();
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RefPtr<VsyncRefreshDriverTimer> timer =
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new VsyncRefreshDriverTimer(std::move(vsyncDispatcher), nullptr);
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return timer.forget();
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}
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// This is used in the parent process for Linux Wayland only, where we have a
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// per-widget VsyncSource which is independent from the gfxPlatform's global
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// VsyncSource.
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static RefPtr<VsyncRefreshDriverTimer>
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CreateForParentProcessWithLocalVsyncDispatcher(
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RefPtr<VsyncDispatcher>&& aVsyncDispatcher) {
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MOZ_RELEASE_ASSERT(XRE_IsParentProcess());
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MOZ_RELEASE_ASSERT(NS_IsMainThread());
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RefPtr<VsyncRefreshDriverTimer> timer =
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new VsyncRefreshDriverTimer(std::move(aVsyncDispatcher), nullptr);
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return timer.forget();
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}
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// This is used in the content process.
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static RefPtr<VsyncRefreshDriverTimer> CreateForContentProcess(
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RefPtr<VsyncMainChild>&& aVsyncChild) {
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MOZ_RELEASE_ASSERT(XRE_IsContentProcess());
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MOZ_RELEASE_ASSERT(NS_IsMainThread());
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RefPtr<VsyncRefreshDriverTimer> timer =
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new VsyncRefreshDriverTimer(nullptr, std::move(aVsyncChild));
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return timer.forget();
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}
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TimeDuration GetTimerRate() override {
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if (mVsyncDispatcher) {
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mVsyncRate = mVsyncDispatcher->GetVsyncRate();
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} else if (mVsyncChild) {
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mVsyncRate = mVsyncChild->GetVsyncRate();
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}
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// If hardware queries fail / are unsupported, we have to just guess.
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return mVsyncRate != TimeDuration::Forever()
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? mVsyncRate
|
|
: TimeDuration::FromMilliseconds(1000.0 / 60.0);
|
|
}
|
|
|
|
private:
|
|
// RefreshDriverVsyncObserver redirects vsync notifications to the main thread
|
|
// and calls VsyncRefreshDriverTimer::NotifyVsyncOnMainThread on it. It also
|
|
// acts as a weak reference to the refresh driver timer, dropping its
|
|
// reference when RefreshDriverVsyncObserver::Shutdown is called from the
|
|
// timer's destructor.
|
|
//
|
|
// RefreshDriverVsyncObserver::NotifyVsync is called from different places
|
|
// depending on the process type.
|
|
//
|
|
// Parent process:
|
|
// NotifyVsync is called by RefreshDriverVsyncDispatcher, on a background
|
|
// thread. RefreshDriverVsyncDispatcher keeps strong references to its
|
|
// VsyncObservers, both in its array of observers and while calling
|
|
// NotifyVsync. So it might drop its last reference to the observer on a
|
|
// background thread. This means that the VsyncRefreshDriverTimer itself can't
|
|
// be the observer (because its destructor would potentially be run on a
|
|
// background thread), and it's why we use this separate class.
|
|
//
|
|
// Child process:
|
|
// NotifyVsync is called by VsyncMainChild, on the main thread.
|
|
// VsyncMainChild keeps raw pointers to its observers.
|
|
class RefreshDriverVsyncObserver final : public VsyncObserver {
|
|
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(
|
|
VsyncRefreshDriverTimer::RefreshDriverVsyncObserver, override)
|
|
|
|
public:
|
|
explicit RefreshDriverVsyncObserver(
|
|
VsyncRefreshDriverTimer* aVsyncRefreshDriverTimer)
|
|
: mVsyncRefreshDriverTimer(aVsyncRefreshDriverTimer),
|
|
mLastPendingVsyncNotification(
|
|
"RefreshDriverVsyncObserver::mLastPendingVsyncNotification") {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
}
|
|
|
|
void NotifyVsync(const VsyncEvent& aVsync) override {
|
|
// Compress vsync notifications such that only 1 may run at a time
|
|
// This is so that we don't flood the refresh driver with vsync messages
|
|
// if the main thread is blocked for long periods of time
|
|
{ // scope lock
|
|
auto pendingVsync = mLastPendingVsyncNotification.Lock();
|
|
bool hadPendingVsync = pendingVsync->isSome();
|
|
*pendingVsync = Some(aVsync);
|
|
if (hadPendingVsync) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (XRE_IsContentProcess()) {
|
|
// In the content process, NotifyVsync is called by VsyncMainChild on
|
|
// the main thread. No need to use a runnable, just call
|
|
// NotifyVsyncTimerOnMainThread() directly.
|
|
NotifyVsyncTimerOnMainThread();
|
|
return;
|
|
}
|
|
|
|
// In the parent process, NotifyVsync is called on the vsync thread, which
|
|
// on most platforms is different from the main thread, so we need to
|
|
// dispatch a runnable for running NotifyVsyncTimerOnMainThread on the
|
|
// main thread.
|
|
// TODO: On Linux Wayland, the vsync thread is currently the main thread,
|
|
// and yet we still dispatch the runnable. Do we need to?
|
|
bool useVsyncPriority = mozilla::BrowserTabsRemoteAutostart();
|
|
nsCOMPtr<nsIRunnable> vsyncEvent = new PrioritizableRunnable(
|
|
NS_NewRunnableFunction(
|
|
"RefreshDriverVsyncObserver::NotifyVsyncTimerOnMainThread",
|
|
[self = RefPtr{this}]() {
|
|
self->NotifyVsyncTimerOnMainThread();
|
|
}),
|
|
useVsyncPriority ? nsIRunnablePriority::PRIORITY_VSYNC
|
|
: nsIRunnablePriority::PRIORITY_NORMAL);
|
|
NS_DispatchToMainThread(vsyncEvent);
|
|
}
|
|
|
|
void NotifyVsyncTimerOnMainThread() {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
if (!mVsyncRefreshDriverTimer) {
|
|
// Ignore calls after Shutdown.
|
|
return;
|
|
}
|
|
|
|
VsyncEvent vsyncEvent;
|
|
{
|
|
// Get the last of the queued-up vsync notifications.
|
|
auto pendingVsync = mLastPendingVsyncNotification.Lock();
|
|
MOZ_RELEASE_ASSERT(
|
|
pendingVsync->isSome(),
|
|
"We should always have a pending vsync notification here.");
|
|
vsyncEvent = pendingVsync->extract();
|
|
}
|
|
|
|
// Call VsyncRefreshDriverTimer::NotifyVsyncOnMainThread, and keep a
|
|
// strong reference to it while calling the method.
|
|
RefPtr<VsyncRefreshDriverTimer> timer = mVsyncRefreshDriverTimer;
|
|
timer->NotifyVsyncOnMainThread(vsyncEvent);
|
|
}
|
|
|
|
void Shutdown() {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
mVsyncRefreshDriverTimer = nullptr;
|
|
}
|
|
|
|
private:
|
|
~RefreshDriverVsyncObserver() = default;
|
|
|
|
// VsyncRefreshDriverTimer holds this RefreshDriverVsyncObserver and it will
|
|
// be always available before Shutdown(). We can just use the raw pointer
|
|
// here.
|
|
// Only accessed on the main thread.
|
|
VsyncRefreshDriverTimer* mVsyncRefreshDriverTimer;
|
|
|
|
// Non-empty between a call to NotifyVsync and a call to
|
|
// NotifyVsyncOnMainThread. When multiple vsync notifications have been
|
|
// received between those two calls, this contains the last of the pending
|
|
// notifications. This is used both in the parent process and in the child
|
|
// process, but it only does something useful in the parent process. In the
|
|
// child process, both calls happen on the main thread right after one
|
|
// another, so there's only one notification to keep track of; vsync
|
|
// notification coalescing for child processes happens at the IPC level
|
|
// instead.
|
|
DataMutex<Maybe<VsyncEvent>> mLastPendingVsyncNotification;
|
|
|
|
}; // RefreshDriverVsyncObserver
|
|
|
|
VsyncRefreshDriverTimer(RefPtr<VsyncDispatcher>&& aVsyncDispatcher,
|
|
RefPtr<VsyncMainChild>&& aVsyncChild)
|
|
: mVsyncDispatcher(aVsyncDispatcher),
|
|
mVsyncChild(aVsyncChild),
|
|
mVsyncRate(TimeDuration::Forever()),
|
|
mRecentVsync(TimeStamp::Now()),
|
|
mLastTickStart(TimeStamp::Now()),
|
|
mLastIdleTaskCount(0),
|
|
mLastRunOutOfMTTasksCount(0),
|
|
mProcessedVsync(true) {
|
|
mVsyncObserver = new RefreshDriverVsyncObserver(this);
|
|
}
|
|
|
|
~VsyncRefreshDriverTimer() override {
|
|
if (mVsyncDispatcher) {
|
|
mVsyncDispatcher->RemoveVsyncObserver(mVsyncObserver);
|
|
mVsyncDispatcher = nullptr;
|
|
} else if (mVsyncChild) {
|
|
mVsyncChild->RemoveChildRefreshTimer(mVsyncObserver);
|
|
mVsyncChild = nullptr;
|
|
}
|
|
|
|
// Detach current vsync timer from this VsyncObserver. The observer will no
|
|
// longer tick this timer.
|
|
mVsyncObserver->Shutdown();
|
|
mVsyncObserver = nullptr;
|
|
}
|
|
|
|
bool ShouldGiveNonVsyncTasksMoreTime() {
|
|
TaskController* taskController = TaskController::Get();
|
|
IdleTaskManager* idleTaskManager = taskController->GetIdleTaskManager();
|
|
|
|
// Note, pendingTaskCount includes also all the pending idle tasks.
|
|
uint64_t pendingTaskCount =
|
|
taskController->PendingMainthreadTaskCountIncludingSuspended();
|
|
uint64_t pendingIdleTaskCount = idleTaskManager->PendingTaskCount();
|
|
MOZ_ASSERT(pendingTaskCount >= pendingIdleTaskCount);
|
|
|
|
uint64_t idleTaskCount = idleTaskManager->ProcessedTaskCount();
|
|
|
|
// If we haven't processed new idle tasks and we have pending
|
|
// non-idle tasks, give those non-idle tasks more time,
|
|
// but only if the main thread wasn't totally empty at some point.
|
|
// In the parent process RunOutOfMTTasksCount() is less meaningful
|
|
// because some of the tasks run through AppShell.
|
|
return mLastIdleTaskCount == idleTaskCount &&
|
|
pendingTaskCount > pendingIdleTaskCount &&
|
|
(taskController->RunOutOfMTTasksCount() ==
|
|
mLastRunOutOfMTTasksCount ||
|
|
XRE_IsParentProcess());
|
|
}
|
|
|
|
void NotifyVsyncOnMainThread(const VsyncEvent& aVsyncEvent) {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
mRecentVsync = aVsyncEvent.mTime;
|
|
mRecentVsyncId = aVsyncEvent.mId;
|
|
if (!mSuspendVsyncPriorityTicksUntil.IsNull() &&
|
|
mSuspendVsyncPriorityTicksUntil > aVsyncEvent.mTime) {
|
|
if (ShouldGiveNonVsyncTasksMoreTime()) {
|
|
if (!IsAnyToplevelContentPageLoading()) {
|
|
// If pages aren't loading and there aren't other tasks to run,
|
|
// trigger the pending vsync notification.
|
|
static bool sHasPendingLowPrioTask = false;
|
|
if (!sHasPendingLowPrioTask) {
|
|
sHasPendingLowPrioTask = true;
|
|
NS_DispatchToMainThreadQueue(
|
|
NS_NewRunnableFunction(
|
|
"NotifyVsyncOnMainThread[low priority]",
|
|
[self = RefPtr{this}, event = aVsyncEvent]() {
|
|
sHasPendingLowPrioTask = false;
|
|
if (self->mRecentVsync == event.mTime &&
|
|
self->mRecentVsyncId == event.mId &&
|
|
!self->ShouldGiveNonVsyncTasksMoreTime()) {
|
|
self->mSuspendVsyncPriorityTicksUntil = TimeStamp();
|
|
self->NotifyVsyncOnMainThread(event);
|
|
}
|
|
}),
|
|
EventQueuePriority::Low);
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
// Clear the value since we aren't blocking anymore because there aren't
|
|
// any non-idle tasks to process.
|
|
mSuspendVsyncPriorityTicksUntil = TimeStamp();
|
|
}
|
|
|
|
if (StaticPrefs::layout_lower_priority_refresh_driver_during_load() &&
|
|
ShouldGiveNonVsyncTasksMoreTime()) {
|
|
nsPresContext* pctx = GetPresContextForOnlyRefreshDriver();
|
|
if (pctx && pctx->HadContentfulPaint() && pctx->Document() &&
|
|
pctx->Document()->GetReadyStateEnum() <
|
|
Document::READYSTATE_COMPLETE) {
|
|
nsPIDOMWindowInner* win = pctx->Document()->GetInnerWindow();
|
|
uint32_t frameRateMultiplier = pctx->GetNextFrameRateMultiplier();
|
|
if (!frameRateMultiplier) {
|
|
pctx->DidUseFrameRateMultiplier();
|
|
}
|
|
if (win && frameRateMultiplier) {
|
|
dom::Performance* perf = win->GetPerformance();
|
|
// Limit slower refresh rate to 5 seconds between the
|
|
// first contentful paint and page load.
|
|
if (perf &&
|
|
perf->Now() < StaticPrefs::page_load_deprioritization_period()) {
|
|
if (mProcessedVsync) {
|
|
mProcessedVsync = false;
|
|
TimeDuration rate = GetTimerRate();
|
|
uint32_t slowRate = static_cast<uint32_t>(rate.ToMilliseconds() *
|
|
frameRateMultiplier);
|
|
pctx->DidUseFrameRateMultiplier();
|
|
nsCOMPtr<nsIRunnable> vsyncEvent = NewRunnableMethod<>(
|
|
"VsyncRefreshDriverTimer::IdlePriorityNotify", this,
|
|
&VsyncRefreshDriverTimer::IdlePriorityNotify);
|
|
NS_DispatchToCurrentThreadQueue(vsyncEvent.forget(), slowRate,
|
|
EventQueuePriority::Idle);
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
TickRefreshDriver(aVsyncEvent.mId, aVsyncEvent.mTime);
|
|
}
|
|
|
|
void RecordTelemetryProbes(TimeStamp aVsyncTimestamp) {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
#ifndef ANDROID /* bug 1142079 */
|
|
if (XRE_IsParentProcess()) {
|
|
TimeDuration vsyncLatency = TimeStamp::Now() - aVsyncTimestamp;
|
|
uint32_t sample = (uint32_t)vsyncLatency.ToMilliseconds();
|
|
Telemetry::Accumulate(Telemetry::FX_REFRESH_DRIVER_CHROME_FRAME_DELAY_MS,
|
|
sample);
|
|
Telemetry::Accumulate(
|
|
Telemetry::FX_REFRESH_DRIVER_SYNC_SCROLL_FRAME_DELAY_MS, sample);
|
|
} else if (mVsyncRate != TimeDuration::Forever()) {
|
|
TimeDuration contentDelay =
|
|
(TimeStamp::Now() - mLastTickStart) - mVsyncRate;
|
|
if (contentDelay.ToMilliseconds() < 0) {
|
|
// Vsyncs are noisy and some can come at a rate quicker than
|
|
// the reported hardware rate. In those cases, consider that we have 0
|
|
// delay.
|
|
contentDelay = TimeDuration::FromMilliseconds(0);
|
|
}
|
|
uint32_t sample = (uint32_t)contentDelay.ToMilliseconds();
|
|
Telemetry::Accumulate(Telemetry::FX_REFRESH_DRIVER_CONTENT_FRAME_DELAY_MS,
|
|
sample);
|
|
Telemetry::Accumulate(
|
|
Telemetry::FX_REFRESH_DRIVER_SYNC_SCROLL_FRAME_DELAY_MS, sample);
|
|
} else {
|
|
// Request the vsync rate which VsyncChild stored the last time it got a
|
|
// vsync notification.
|
|
mVsyncRate = mVsyncChild->GetVsyncRate();
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void OnTimerStart() {
|
|
mLastTickStart = TimeStamp::Now();
|
|
mLastTickEnd = TimeStamp();
|
|
mLastIdleTaskCount = 0;
|
|
}
|
|
|
|
void IdlePriorityNotify() {
|
|
if (mLastProcessedTick.IsNull() || mRecentVsync > mLastProcessedTick) {
|
|
// mSuspendVsyncPriorityTicksUntil is for high priority vsync
|
|
// notifications only.
|
|
mSuspendVsyncPriorityTicksUntil = TimeStamp();
|
|
TickRefreshDriver(mRecentVsyncId, mRecentVsync);
|
|
}
|
|
|
|
mProcessedVsync = true;
|
|
}
|
|
|
|
void TickRefreshDriver(VsyncId aId, TimeStamp aVsyncTimestamp) {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
RecordTelemetryProbes(aVsyncTimestamp);
|
|
|
|
TimeStamp tickStart = TimeStamp::Now();
|
|
|
|
TimeDuration rate = GetTimerRate();
|
|
if (TimeDuration::FromMilliseconds(nsRefreshDriver::DefaultInterval() / 2) >
|
|
rate) {
|
|
sMostRecentHighRateVsync = tickStart;
|
|
}
|
|
|
|
// On 32-bit Windows we sometimes get times where TimeStamp::Now() is not
|
|
// monotonic because the underlying system apis produce non-monontonic
|
|
// results. (bug 1306896)
|
|
#if !defined(_WIN32)
|
|
MOZ_ASSERT(aVsyncTimestamp <= tickStart);
|
|
#endif
|
|
|
|
bool shouldGiveNonVSyncTasksMoreTime = ShouldGiveNonVsyncTasksMoreTime();
|
|
|
|
// Set these variables before calling RunRefreshDrivers so that they are
|
|
// visible to any nested ticks.
|
|
mLastTickStart = tickStart;
|
|
mLastProcessedTick = aVsyncTimestamp;
|
|
|
|
RunRefreshDrivers(aId, aVsyncTimestamp);
|
|
|
|
TimeStamp tickEnd = TimeStamp::Now();
|
|
|
|
// Re-read mLastTickStart in case there was a nested tick inside this
|
|
// tick.
|
|
TimeStamp mostRecentTickStart = mLastTickStart;
|
|
|
|
// Let also non-RefreshDriver code to run at least for awhile if we have
|
|
// a mVsyncRefreshDriverTimer.
|
|
// Always give a tiny bit, 1% of the vsync interval, time outside the
|
|
// tick
|
|
// In case there are both normal tasks and RefreshDrivers are doing
|
|
// work, mSuspendVsyncPriorityTicksUntil will be set to a timestamp in the
|
|
// future where the period between the previous tick start
|
|
// (aVsyncTimestamp) and the next tick needs to be at least the amount of
|
|
// work normal tasks and RefreshDrivers did together (minus short grace
|
|
// period).
|
|
TimeDuration gracePeriod = rate / int64_t(100);
|
|
|
|
if (shouldGiveNonVSyncTasksMoreTime) {
|
|
if (!mLastTickEnd.IsNull() && XRE_IsContentProcess() &&
|
|
// For RefreshDriver scheduling during page load there is currently
|
|
// idle priority based setup.
|
|
// XXX Consider to remove the page load specific code paths.
|
|
!IsAnyToplevelContentPageLoading()) {
|
|
// In case normal tasks are doing lots of work, we still want to paint
|
|
// every now and then, so only at maximum 4 * rate of work is counted
|
|
// here.
|
|
// If we're giving extra time for tasks outside a tick, try to
|
|
// ensure the next vsync after that period is handled, so subtract
|
|
// a grace period.
|
|
TimeDuration timeForOutsideTick = clamped(
|
|
tickStart - mLastTickEnd - gracePeriod, TimeDuration(), rate * 4);
|
|
mSuspendVsyncPriorityTicksUntil = aVsyncTimestamp + timeForOutsideTick +
|
|
(tickEnd - mostRecentTickStart);
|
|
} else {
|
|
mSuspendVsyncPriorityTicksUntil =
|
|
aVsyncTimestamp + gracePeriod + (tickEnd - mostRecentTickStart);
|
|
}
|
|
} else {
|
|
mSuspendVsyncPriorityTicksUntil = aVsyncTimestamp + gracePeriod;
|
|
}
|
|
|
|
mLastIdleTaskCount =
|
|
TaskController::Get()->GetIdleTaskManager()->ProcessedTaskCount();
|
|
mLastRunOutOfMTTasksCount = TaskController::Get()->RunOutOfMTTasksCount();
|
|
mLastTickEnd = tickEnd;
|
|
}
|
|
|
|
void StartTimer() override {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
mLastFireTime = TimeStamp::Now();
|
|
mLastFireId = VsyncId();
|
|
|
|
if (mVsyncDispatcher) {
|
|
mVsyncDispatcher->AddVsyncObserver(mVsyncObserver);
|
|
} else if (mVsyncChild) {
|
|
mVsyncChild->AddChildRefreshTimer(mVsyncObserver);
|
|
OnTimerStart();
|
|
}
|
|
mIsTicking = true;
|
|
}
|
|
|
|
void StopTimer() override {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
if (mVsyncDispatcher) {
|
|
mVsyncDispatcher->RemoveVsyncObserver(mVsyncObserver);
|
|
} else if (mVsyncChild) {
|
|
mVsyncChild->RemoveChildRefreshTimer(mVsyncObserver);
|
|
}
|
|
mIsTicking = false;
|
|
}
|
|
|
|
public:
|
|
bool IsTicking() const override { return mIsTicking; }
|
|
|
|
protected:
|
|
void ScheduleNextTick(TimeStamp aNowTime) override {
|
|
// Do nothing since we just wait for the next vsync from
|
|
// RefreshDriverVsyncObserver.
|
|
}
|
|
|
|
void RunRefreshDrivers(VsyncId aId, TimeStamp aTimeStamp) {
|
|
Tick(aId, aTimeStamp);
|
|
for (auto& driver : mContentRefreshDrivers) {
|
|
driver->FinishedVsyncTick();
|
|
}
|
|
for (auto& driver : mRootRefreshDrivers) {
|
|
driver->FinishedVsyncTick();
|
|
}
|
|
}
|
|
|
|
// Always non-null. Has a weak pointer to us and notifies us of vsync.
|
|
RefPtr<RefreshDriverVsyncObserver> mVsyncObserver;
|
|
|
|
// Used in the parent process. We register mVsyncObserver with it for the
|
|
// duration during which we want to receive vsync notifications. We also
|
|
// use it to query the current vsync rate.
|
|
RefPtr<VsyncDispatcher> mVsyncDispatcher;
|
|
// Used it the content process. We register mVsyncObserver with it for the
|
|
// duration during which we want to receive vsync notifications. The
|
|
// mVsyncChild will be always available before VsyncChild::ActorDestroy().
|
|
// After ActorDestroy(), StartTimer() and StopTimer() calls will be non-op.
|
|
RefPtr<VsyncMainChild> mVsyncChild;
|
|
|
|
TimeDuration mVsyncRate;
|
|
bool mIsTicking = false;
|
|
|
|
TimeStamp mRecentVsync;
|
|
VsyncId mRecentVsyncId;
|
|
// The local start time when RefreshDrivers' Tick was called last time.
|
|
TimeStamp mLastTickStart;
|
|
// The local end time of the last RefreshDrivers' tick.
|
|
TimeStamp mLastTickEnd;
|
|
// The number of idle tasks the main thread has processed. It is updated
|
|
// right after RefreshDrivers' tick.
|
|
uint64_t mLastIdleTaskCount;
|
|
// If there were no idle tasks, we need to check if the main event queue
|
|
// was totally empty at times.
|
|
uint64_t mLastRunOutOfMTTasksCount;
|
|
// Note, mLastProcessedTick stores the vsync timestamp, which may be coming
|
|
// from a different process.
|
|
TimeStamp mLastProcessedTick;
|
|
// mSuspendVsyncPriorityTicksUntil is used to block too high refresh rate in
|
|
// case the main thread has also other non-idle tasks to process.
|
|
// The timestamp is effectively mLastProcessedTick + some duration.
|
|
TimeStamp mSuspendVsyncPriorityTicksUntil;
|
|
bool mProcessedVsync;
|
|
}; // VsyncRefreshDriverTimer
|
|
|
|
/**
|
|
* Since the content process takes some time to setup
|
|
* the vsync IPC connection, this timer is used
|
|
* during the intial startup process.
|
|
* During initial startup, the refresh drivers
|
|
* are ticked off this timer, and are swapped out once content
|
|
* vsync IPC connection is established.
|
|
*/
|
|
class StartupRefreshDriverTimer : public SimpleTimerBasedRefreshDriverTimer {
|
|
public:
|
|
explicit StartupRefreshDriverTimer(double aRate)
|
|
: SimpleTimerBasedRefreshDriverTimer(aRate) {}
|
|
|
|
protected:
|
|
void ScheduleNextTick(TimeStamp aNowTime) override {
|
|
// Since this is only used for startup, it isn't super critical
|
|
// that we tick at consistent intervals.
|
|
TimeStamp newTarget = aNowTime + mRateDuration;
|
|
uint32_t delay =
|
|
static_cast<uint32_t>((newTarget - aNowTime).ToMilliseconds());
|
|
mTimer->InitWithNamedFuncCallback(
|
|
TimerTick, this, delay, nsITimer::TYPE_ONE_SHOT,
|
|
"StartupRefreshDriverTimer::ScheduleNextTick");
|
|
mTargetTime = newTarget;
|
|
}
|
|
|
|
public:
|
|
bool IsTicking() const override { return true; }
|
|
};
|
|
|
|
/*
|
|
* A RefreshDriverTimer for inactive documents. When a new refresh driver is
|
|
* added, the rate is reset to the base (normally 1s/1fps). Every time
|
|
* it ticks, a single refresh driver is poked. Once they have all been poked,
|
|
* the duration between ticks doubles, up to mDisableAfterMilliseconds. At that
|
|
* point, the timer is quiet and doesn't tick (until something is added to it
|
|
* again).
|
|
*
|
|
* When a timer is removed, there is a possibility of another timer
|
|
* being skipped for one cycle. We could avoid this by adjusting
|
|
* mNextDriverIndex in RemoveRefreshDriver, but there's little need to
|
|
* add that complexity. All we want is for inactive drivers to tick
|
|
* at some point, but we don't care too much about how often.
|
|
*/
|
|
class InactiveRefreshDriverTimer final
|
|
: public SimpleTimerBasedRefreshDriverTimer {
|
|
public:
|
|
explicit InactiveRefreshDriverTimer(double aRate)
|
|
: SimpleTimerBasedRefreshDriverTimer(aRate),
|
|
mNextTickDuration(aRate),
|
|
mDisableAfterMilliseconds(-1.0),
|
|
mNextDriverIndex(0) {}
|
|
|
|
InactiveRefreshDriverTimer(double aRate, double aDisableAfterMilliseconds)
|
|
: SimpleTimerBasedRefreshDriverTimer(aRate),
|
|
mNextTickDuration(aRate),
|
|
mDisableAfterMilliseconds(aDisableAfterMilliseconds),
|
|
mNextDriverIndex(0) {}
|
|
|
|
void AddRefreshDriver(nsRefreshDriver* aDriver) override {
|
|
RefreshDriverTimer::AddRefreshDriver(aDriver);
|
|
|
|
LOG("[%p] inactive timer got new refresh driver %p, resetting rate", this,
|
|
aDriver);
|
|
|
|
// reset the timer, and start with the newly added one next time.
|
|
mNextTickDuration = mRateMilliseconds;
|
|
|
|
// we don't really have to start with the newly added one, but we may as
|
|
// well not tick the old ones at the fastest rate any more than we need to.
|
|
mNextDriverIndex = GetRefreshDriverCount() - 1;
|
|
|
|
StopTimer();
|
|
StartTimer();
|
|
}
|
|
|
|
TimeDuration GetTimerRate() override {
|
|
return TimeDuration::FromMilliseconds(mNextTickDuration);
|
|
}
|
|
|
|
protected:
|
|
uint32_t GetRefreshDriverCount() {
|
|
return mContentRefreshDrivers.Length() + mRootRefreshDrivers.Length();
|
|
}
|
|
|
|
void StartTimer() override {
|
|
mLastFireTime = TimeStamp::Now();
|
|
mLastFireId = VsyncId();
|
|
|
|
mTargetTime = mLastFireTime + mRateDuration;
|
|
|
|
uint32_t delay = static_cast<uint32_t>(mRateMilliseconds);
|
|
mTimer->InitWithNamedFuncCallback(TimerTickOne, this, delay,
|
|
nsITimer::TYPE_ONE_SHOT,
|
|
"InactiveRefreshDriverTimer::StartTimer");
|
|
mIsTicking = true;
|
|
}
|
|
|
|
void StopTimer() override {
|
|
mTimer->Cancel();
|
|
mIsTicking = false;
|
|
}
|
|
|
|
void ScheduleNextTick(TimeStamp aNowTime) override {
|
|
if (mDisableAfterMilliseconds > 0.0 &&
|
|
mNextTickDuration > mDisableAfterMilliseconds) {
|
|
// We hit the time after which we should disable
|
|
// inactive window refreshes; don't schedule anything
|
|
// until we get kicked by an AddRefreshDriver call.
|
|
return;
|
|
}
|
|
|
|
// double the next tick time if we've already gone through all of them once
|
|
if (mNextDriverIndex >= GetRefreshDriverCount()) {
|
|
mNextTickDuration *= 2.0;
|
|
mNextDriverIndex = 0;
|
|
}
|
|
|
|
// this doesn't need to be precise; do a simple schedule
|
|
uint32_t delay = static_cast<uint32_t>(mNextTickDuration);
|
|
mTimer->InitWithNamedFuncCallback(
|
|
TimerTickOne, this, delay, nsITimer::TYPE_ONE_SHOT,
|
|
"InactiveRefreshDriverTimer::ScheduleNextTick");
|
|
|
|
LOG("[%p] inactive timer next tick in %f ms [index %d/%d]", this,
|
|
mNextTickDuration, mNextDriverIndex, GetRefreshDriverCount());
|
|
}
|
|
|
|
public:
|
|
bool IsTicking() const override { return mIsTicking; }
|
|
|
|
protected:
|
|
/* Runs just one driver's tick. */
|
|
void TickOne() {
|
|
TimeStamp now = TimeStamp::Now();
|
|
|
|
ScheduleNextTick(now);
|
|
|
|
mLastFireTime = now;
|
|
mLastFireId = VsyncId();
|
|
|
|
nsTArray<RefPtr<nsRefreshDriver>> drivers(mContentRefreshDrivers.Clone());
|
|
drivers.AppendElements(mRootRefreshDrivers);
|
|
size_t index = mNextDriverIndex;
|
|
|
|
if (index < drivers.Length() &&
|
|
!drivers[index]->IsTestControllingRefreshesEnabled()) {
|
|
TickDriver(drivers[index], VsyncId(), now);
|
|
}
|
|
|
|
mNextDriverIndex++;
|
|
}
|
|
|
|
static void TimerTickOne(nsITimer* aTimer, void* aClosure) {
|
|
RefPtr<InactiveRefreshDriverTimer> timer =
|
|
static_cast<InactiveRefreshDriverTimer*>(aClosure);
|
|
timer->TickOne();
|
|
}
|
|
|
|
double mNextTickDuration;
|
|
double mDisableAfterMilliseconds;
|
|
uint32_t mNextDriverIndex;
|
|
bool mIsTicking = false;
|
|
};
|
|
|
|
} // namespace mozilla
|
|
|
|
static StaticRefPtr<RefreshDriverTimer> sRegularRateTimer;
|
|
static StaticAutoPtr<nsTArray<RefreshDriverTimer*>> sRegularRateTimerList;
|
|
static StaticRefPtr<InactiveRefreshDriverTimer> sThrottledRateTimer;
|
|
|
|
void nsRefreshDriver::CreateVsyncRefreshTimer() {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
if (gfxPlatform::IsInLayoutAsapMode()) {
|
|
return;
|
|
}
|
|
|
|
if (!mOwnTimer) {
|
|
// If available, we fetch the widget-specific vsync source.
|
|
nsPresContext* pc = GetPresContext();
|
|
nsCOMPtr<nsIWidget> widget = pc->GetRootWidget();
|
|
if (widget) {
|
|
if (RefPtr<VsyncDispatcher> vsyncDispatcher =
|
|
widget->GetVsyncDispatcher()) {
|
|
mOwnTimer = VsyncRefreshDriverTimer::
|
|
CreateForParentProcessWithLocalVsyncDispatcher(
|
|
std::move(vsyncDispatcher));
|
|
sRegularRateTimerList->AppendElement(mOwnTimer.get());
|
|
return;
|
|
}
|
|
if (BrowserChild* browserChild = widget->GetOwningBrowserChild()) {
|
|
if (RefPtr<VsyncMainChild> vsyncChildViaPBrowser =
|
|
browserChild->GetVsyncChild()) {
|
|
mOwnTimer = VsyncRefreshDriverTimer::CreateForContentProcess(
|
|
std::move(vsyncChildViaPBrowser));
|
|
sRegularRateTimerList->AppendElement(mOwnTimer.get());
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (!sRegularRateTimer) {
|
|
if (XRE_IsParentProcess()) {
|
|
// Make sure all vsync systems are ready.
|
|
gfxPlatform::GetPlatform();
|
|
// In parent process, we can create the VsyncRefreshDriverTimer directly.
|
|
sRegularRateTimer =
|
|
VsyncRefreshDriverTimer::CreateForParentProcessWithGlobalVsync();
|
|
} else {
|
|
PBackgroundChild* actorChild =
|
|
BackgroundChild::GetOrCreateForCurrentThread();
|
|
if (NS_WARN_IF(!actorChild)) {
|
|
return;
|
|
}
|
|
|
|
auto vsyncChildViaPBackground = MakeRefPtr<dom::VsyncMainChild>();
|
|
dom::PVsyncChild* actor =
|
|
actorChild->SendPVsyncConstructor(vsyncChildViaPBackground);
|
|
if (NS_WARN_IF(!actor)) {
|
|
return;
|
|
}
|
|
|
|
RefPtr<RefreshDriverTimer> vsyncRefreshDriverTimer =
|
|
VsyncRefreshDriverTimer::CreateForContentProcess(
|
|
std::move(vsyncChildViaPBackground));
|
|
|
|
sRegularRateTimer = std::move(vsyncRefreshDriverTimer);
|
|
}
|
|
}
|
|
}
|
|
|
|
static uint32_t GetFirstFrameDelay(imgIRequest* req) {
|
|
nsCOMPtr<imgIContainer> container;
|
|
if (NS_FAILED(req->GetImage(getter_AddRefs(container))) || !container) {
|
|
return 0;
|
|
}
|
|
|
|
// If this image isn't animated, there isn't a first frame delay.
|
|
int32_t delay = container->GetFirstFrameDelay();
|
|
if (delay < 0) return 0;
|
|
|
|
return static_cast<uint32_t>(delay);
|
|
}
|
|
|
|
/* static */
|
|
void nsRefreshDriver::Shutdown() {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
// clean up our timers
|
|
sRegularRateTimer = nullptr;
|
|
sRegularRateTimerList = nullptr;
|
|
sThrottledRateTimer = nullptr;
|
|
}
|
|
|
|
/* static */
|
|
int32_t nsRefreshDriver::DefaultInterval() {
|
|
return NSToIntRound(1000.0 / gfxPlatform::GetDefaultFrameRate());
|
|
}
|
|
|
|
/* static */
|
|
bool nsRefreshDriver::IsInHighRateMode() {
|
|
// We're in high rate mode if we've gotten a fast rate during the last
|
|
// DefaultInterval().
|
|
bool inHighRateMode =
|
|
!gfxPlatform::IsInLayoutAsapMode() &&
|
|
StaticPrefs::layout_expose_high_rate_mode_from_refreshdriver() &&
|
|
!sMostRecentHighRateVsync.IsNull() &&
|
|
(sMostRecentHighRateVsync +
|
|
TimeDuration::FromMilliseconds(DefaultInterval())) > TimeStamp::Now();
|
|
if (!inHighRateMode) {
|
|
// Clear the timestamp so that the next call is faster.
|
|
sMostRecentHighRateVsync = TimeStamp();
|
|
}
|
|
return inHighRateMode;
|
|
}
|
|
|
|
// Compute the interval to use for the refresh driver timer, in milliseconds.
|
|
// outIsDefault indicates that rate was not explicitly set by the user
|
|
// so we might choose other, more appropriate rates (e.g. vsync, etc)
|
|
// layout.frame_rate=0 indicates "ASAP mode".
|
|
// In ASAP mode rendering is iterated as fast as possible (typically for stress
|
|
// testing). A target rate of 10k is used internally instead of special-handling
|
|
// 0. Backends which block on swap/present/etc should try to not block when
|
|
// layout.frame_rate=0 - to comply with "ASAP" as much as possible.
|
|
double nsRefreshDriver::GetRegularTimerInterval() const {
|
|
int32_t rate = Preferences::GetInt("layout.frame_rate", -1);
|
|
if (rate < 0) {
|
|
rate = gfxPlatform::GetDefaultFrameRate();
|
|
} else if (rate == 0) {
|
|
rate = 10000;
|
|
}
|
|
|
|
return 1000.0 / rate;
|
|
}
|
|
|
|
/* static */
|
|
double nsRefreshDriver::GetThrottledTimerInterval() {
|
|
uint32_t rate = StaticPrefs::layout_throttled_frame_rate();
|
|
return 1000.0 / rate;
|
|
}
|
|
|
|
/* static */
|
|
TimeDuration nsRefreshDriver::GetMinRecomputeVisibilityInterval() {
|
|
return TimeDuration::FromMilliseconds(
|
|
StaticPrefs::layout_visibility_min_recompute_interval_ms());
|
|
}
|
|
|
|
bool nsRefreshDriver::ComputeShouldBeThrottled() const {
|
|
if (mIsActive) {
|
|
// If we're active we should definitely be unthrottled.
|
|
return false;
|
|
}
|
|
if (!mIsInActiveTab) {
|
|
// If we're not in the active tab we should definitely be throttled.
|
|
return true;
|
|
}
|
|
if (mIsGrantingActivityGracePeriod) {
|
|
// If we're granting the activity grace period, then we should be
|
|
// unthrottled.
|
|
return false;
|
|
}
|
|
// Otherwise we should be throttled.
|
|
return true;
|
|
}
|
|
|
|
RefreshDriverTimer* nsRefreshDriver::ChooseTimer() {
|
|
if (mThrottled) {
|
|
if (!sThrottledRateTimer) {
|
|
sThrottledRateTimer = new InactiveRefreshDriverTimer(
|
|
GetThrottledTimerInterval(),
|
|
DEFAULT_INACTIVE_TIMER_DISABLE_SECONDS * 1000.0);
|
|
}
|
|
return sThrottledRateTimer;
|
|
}
|
|
|
|
if (!mOwnTimer) {
|
|
CreateVsyncRefreshTimer();
|
|
}
|
|
|
|
if (mOwnTimer) {
|
|
return mOwnTimer.get();
|
|
}
|
|
|
|
if (!sRegularRateTimer) {
|
|
double rate = GetRegularTimerInterval();
|
|
sRegularRateTimer = new StartupRefreshDriverTimer(rate);
|
|
}
|
|
|
|
return sRegularRateTimer;
|
|
}
|
|
|
|
static nsDocShell* GetDocShell(nsPresContext* aPresContext) {
|
|
if (!aPresContext) {
|
|
return nullptr;
|
|
}
|
|
return static_cast<nsDocShell*>(aPresContext->GetDocShell());
|
|
}
|
|
|
|
nsRefreshDriver::nsRefreshDriver(nsPresContext* aPresContext)
|
|
: mActiveTimer(nullptr),
|
|
mOwnTimer(nullptr),
|
|
mPresContext(aPresContext),
|
|
mRootRefresh(nullptr),
|
|
mNextTransactionId{0},
|
|
mFreezeCount(0),
|
|
mThrottledFrameRequestInterval(
|
|
TimeDuration::FromMilliseconds(GetThrottledTimerInterval())),
|
|
mMinRecomputeVisibilityInterval(GetMinRecomputeVisibilityInterval()),
|
|
mThrottled(false),
|
|
mIsActive(true),
|
|
mIsInActiveTab(true),
|
|
mIsGrantingActivityGracePeriod(false),
|
|
mHasGrantedActivityGracePeriod(false),
|
|
mNeedToRecomputeVisibility(false),
|
|
mTestControllingRefreshes(false),
|
|
mViewManagerFlushIsPending(false),
|
|
mHasScheduleFlush(false),
|
|
mInRefresh(false),
|
|
mWaitingForTransaction(false),
|
|
mSkippedPaints(false),
|
|
mResizeSuppressed(false),
|
|
mNotifyDOMContentFlushed(false),
|
|
mNeedToUpdateIntersectionObservations(false),
|
|
mNeedToUpdateContentRelevancy(false),
|
|
mInNormalTick(false),
|
|
mAttemptedExtraTickSinceLastVsync(false),
|
|
mHasExceededAfterLoadTickPeriod(false),
|
|
mHasStartedTimerAtLeastOnce(false) {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
MOZ_ASSERT(mPresContext,
|
|
"Need a pres context to tell us to call Disconnect() later "
|
|
"and decrement sRefreshDriverCount.");
|
|
mMostRecentRefresh = TimeStamp::Now();
|
|
mNextThrottledFrameRequestTick = mMostRecentRefresh;
|
|
mNextRecomputeVisibilityTick = mMostRecentRefresh;
|
|
|
|
if (!sRegularRateTimerList) {
|
|
sRegularRateTimerList = new nsTArray<RefreshDriverTimer*>();
|
|
}
|
|
++sRefreshDriverCount;
|
|
}
|
|
|
|
nsRefreshDriver::~nsRefreshDriver() {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
MOZ_ASSERT(ObserverCount() == mEarlyRunners.Length(),
|
|
"observers, except pending selection scrolls, "
|
|
"should have been unregistered");
|
|
MOZ_ASSERT(!mActiveTimer, "timer should be gone");
|
|
MOZ_ASSERT(!mPresContext,
|
|
"Should have called Disconnect() and decremented "
|
|
"sRefreshDriverCount!");
|
|
|
|
if (mRootRefresh) {
|
|
mRootRefresh->RemoveRefreshObserver(this, FlushType::Style);
|
|
mRootRefresh = nullptr;
|
|
}
|
|
if (mOwnTimer && sRegularRateTimerList) {
|
|
sRegularRateTimerList->RemoveElement(mOwnTimer.get());
|
|
}
|
|
}
|
|
|
|
// Method for testing. See nsIDOMWindowUtils.advanceTimeAndRefresh
|
|
// for description.
|
|
void nsRefreshDriver::AdvanceTimeAndRefresh(int64_t aMilliseconds) {
|
|
// ensure that we're removed from our driver
|
|
StopTimer();
|
|
|
|
if (!mTestControllingRefreshes) {
|
|
mMostRecentRefresh = TimeStamp::Now();
|
|
|
|
mTestControllingRefreshes = true;
|
|
if (mWaitingForTransaction) {
|
|
// Disable any refresh driver throttling when entering test mode
|
|
mWaitingForTransaction = false;
|
|
mSkippedPaints = false;
|
|
}
|
|
}
|
|
|
|
mMostRecentRefresh += TimeDuration::FromMilliseconds((double)aMilliseconds);
|
|
|
|
mozilla::dom::AutoNoJSAPI nojsapi;
|
|
DoTick();
|
|
}
|
|
|
|
void nsRefreshDriver::RestoreNormalRefresh() {
|
|
mTestControllingRefreshes = false;
|
|
EnsureTimerStarted(eAllowTimeToGoBackwards);
|
|
mPendingTransactions.Clear();
|
|
}
|
|
|
|
TimeStamp nsRefreshDriver::MostRecentRefresh(bool aEnsureTimerStarted) const {
|
|
// In case of stylo traversal, we have already activated the refresh driver in
|
|
// RestyleManager::ProcessPendingRestyles().
|
|
if (aEnsureTimerStarted && !ServoStyleSet::IsInServoTraversal()) {
|
|
const_cast<nsRefreshDriver*>(this)->EnsureTimerStarted();
|
|
}
|
|
|
|
return mMostRecentRefresh;
|
|
}
|
|
|
|
void nsRefreshDriver::AddRefreshObserver(nsARefreshObserver* aObserver,
|
|
FlushType aFlushType,
|
|
const char* aObserverDescription) {
|
|
ObserverArray& array = ArrayFor(aFlushType);
|
|
array.AppendElement(
|
|
ObserverData{aObserver, aObserverDescription, TimeStamp::Now(),
|
|
MarkerInnerWindowIdFromDocShell(GetDocShell(mPresContext)),
|
|
profiler_capture_backtrace(), aFlushType});
|
|
EnsureTimerStarted();
|
|
}
|
|
|
|
bool nsRefreshDriver::RemoveRefreshObserver(nsARefreshObserver* aObserver,
|
|
FlushType aFlushType) {
|
|
ObserverArray& array = ArrayFor(aFlushType);
|
|
auto index = array.IndexOf(aObserver);
|
|
if (index == ObserverArray::array_type::NoIndex) {
|
|
return false;
|
|
}
|
|
|
|
if (profiler_thread_is_being_profiled_for_markers()) {
|
|
auto& data = array.ElementAt(index);
|
|
nsPrintfCString str("%s [%s]", data.mDescription,
|
|
kFlushTypeNames[aFlushType]);
|
|
PROFILER_MARKER_TEXT(
|
|
"RefreshObserver", GRAPHICS,
|
|
MarkerOptions(MarkerStack::TakeBacktrace(std::move(data.mCause)),
|
|
MarkerTiming::IntervalUntilNowFrom(data.mRegisterTime),
|
|
std::move(data.mInnerWindowId)),
|
|
str);
|
|
}
|
|
|
|
array.RemoveElementAt(index);
|
|
return true;
|
|
}
|
|
|
|
void nsRefreshDriver::AddTimerAdjustmentObserver(
|
|
nsATimerAdjustmentObserver* aObserver) {
|
|
MOZ_ASSERT(!mTimerAdjustmentObservers.Contains(aObserver));
|
|
mTimerAdjustmentObservers.AppendElement(aObserver);
|
|
}
|
|
|
|
void nsRefreshDriver::RemoveTimerAdjustmentObserver(
|
|
nsATimerAdjustmentObserver* aObserver) {
|
|
MOZ_ASSERT(mTimerAdjustmentObservers.Contains(aObserver));
|
|
mTimerAdjustmentObservers.RemoveElement(aObserver);
|
|
}
|
|
|
|
void nsRefreshDriver::PostVisualViewportResizeEvent(
|
|
VVPResizeEvent* aResizeEvent) {
|
|
mVisualViewportResizeEvents.AppendElement(aResizeEvent);
|
|
EnsureTimerStarted();
|
|
}
|
|
|
|
void nsRefreshDriver::DispatchVisualViewportResizeEvents() {
|
|
// We're taking a hint from scroll events and only dispatch the current set
|
|
// of queued resize events. If additional events are posted in response to
|
|
// the current events being dispatched, we'll dispatch them on the next tick.
|
|
VisualViewportResizeEventArray events =
|
|
std::move(mVisualViewportResizeEvents);
|
|
for (auto& event : events) {
|
|
event->Run();
|
|
}
|
|
}
|
|
|
|
void nsRefreshDriver::PostScrollEvent(mozilla::Runnable* aScrollEvent,
|
|
bool aDelayed) {
|
|
if (aDelayed) {
|
|
mDelayedScrollEvents.AppendElement(aScrollEvent);
|
|
} else {
|
|
mScrollEvents.AppendElement(aScrollEvent);
|
|
EnsureTimerStarted();
|
|
}
|
|
}
|
|
|
|
void nsRefreshDriver::DispatchScrollEvents() {
|
|
// Scroll events are one-shot, so after running them we can drop them.
|
|
// However, dispatching a scroll event can potentially cause more scroll
|
|
// events to be posted, so we move the initial set into a temporary array
|
|
// first. (Newly posted scroll events will be dispatched on the next tick.)
|
|
ScrollEventArray events = std::move(mScrollEvents);
|
|
for (auto& event : events) {
|
|
event->Run();
|
|
}
|
|
}
|
|
|
|
void nsRefreshDriver::PostVisualViewportScrollEvent(
|
|
VVPScrollEvent* aScrollEvent) {
|
|
mVisualViewportScrollEvents.AppendElement(aScrollEvent);
|
|
EnsureTimerStarted();
|
|
}
|
|
|
|
void nsRefreshDriver::DispatchVisualViewportScrollEvents() {
|
|
// Scroll events are one-shot, so after running them we can drop them.
|
|
// However, dispatching a scroll event can potentially cause more scroll
|
|
// events to be posted, so we move the initial set into a temporary array
|
|
// first. (Newly posted scroll events will be dispatched on the next tick.)
|
|
VisualViewportScrollEventArray events =
|
|
std::move(mVisualViewportScrollEvents);
|
|
for (auto& event : events) {
|
|
event->Run();
|
|
}
|
|
}
|
|
|
|
void nsRefreshDriver::AddPostRefreshObserver(
|
|
nsAPostRefreshObserver* aObserver) {
|
|
MOZ_ASSERT(!mPostRefreshObservers.Contains(aObserver));
|
|
mPostRefreshObservers.AppendElement(aObserver);
|
|
}
|
|
|
|
void nsRefreshDriver::RemovePostRefreshObserver(
|
|
nsAPostRefreshObserver* aObserver) {
|
|
bool removed = mPostRefreshObservers.RemoveElement(aObserver);
|
|
MOZ_DIAGNOSTIC_ASSERT(removed);
|
|
Unused << removed;
|
|
}
|
|
|
|
void nsRefreshDriver::AddImageRequest(imgIRequest* aRequest) {
|
|
uint32_t delay = GetFirstFrameDelay(aRequest);
|
|
if (delay == 0) {
|
|
mRequests.Insert(aRequest);
|
|
} else {
|
|
auto* const start = mStartTable.GetOrInsertNew(delay);
|
|
start->mEntries.Insert(aRequest);
|
|
}
|
|
|
|
EnsureTimerStarted();
|
|
|
|
if (profiler_thread_is_being_profiled_for_markers()) {
|
|
nsCOMPtr<nsIURI> uri = aRequest->GetURI();
|
|
|
|
PROFILER_MARKER_TEXT("Image Animation", GRAPHICS,
|
|
MarkerOptions(MarkerTiming::IntervalStart(),
|
|
MarkerInnerWindowIdFromDocShell(
|
|
GetDocShell(mPresContext))),
|
|
nsContentUtils::TruncatedURLForDisplay(uri));
|
|
}
|
|
}
|
|
|
|
void nsRefreshDriver::RemoveImageRequest(imgIRequest* aRequest) {
|
|
// Try to remove from both places, just in case.
|
|
bool removed = mRequests.EnsureRemoved(aRequest);
|
|
uint32_t delay = GetFirstFrameDelay(aRequest);
|
|
if (delay != 0) {
|
|
ImageStartData* start = mStartTable.Get(delay);
|
|
if (start) {
|
|
removed = removed | start->mEntries.EnsureRemoved(aRequest);
|
|
}
|
|
}
|
|
|
|
if (removed && profiler_thread_is_being_profiled_for_markers()) {
|
|
nsCOMPtr<nsIURI> uri = aRequest->GetURI();
|
|
|
|
PROFILER_MARKER_TEXT("Image Animation", GRAPHICS,
|
|
MarkerOptions(MarkerTiming::IntervalEnd(),
|
|
MarkerInnerWindowIdFromDocShell(
|
|
GetDocShell(mPresContext))),
|
|
nsContentUtils::TruncatedURLForDisplay(uri));
|
|
}
|
|
}
|
|
|
|
void nsRefreshDriver::NotifyDOMContentLoaded() {
|
|
// If the refresh driver is going to tick, we mark the timestamp after
|
|
// everything is flushed in the next tick. If it isn't, mark ourselves as
|
|
// flushed now.
|
|
if (!HasObservers()) {
|
|
if (nsPresContext* pc = GetPresContext()) {
|
|
pc->NotifyDOMContentFlushed();
|
|
}
|
|
// else, we don't have a nsPresContext, so our doc is probably being
|
|
// destroyed and this notification doesn't need sending anyway.
|
|
} else {
|
|
mNotifyDOMContentFlushed = true;
|
|
}
|
|
}
|
|
|
|
void nsRefreshDriver::RegisterCompositionPayload(
|
|
const mozilla::layers::CompositionPayload& aPayload) {
|
|
mCompositionPayloads.AppendElement(aPayload);
|
|
}
|
|
|
|
void nsRefreshDriver::AddForceNotifyContentfulPaintPresContext(
|
|
nsPresContext* aPresContext) {
|
|
mForceNotifyContentfulPaintPresContexts.AppendElement(aPresContext);
|
|
}
|
|
|
|
void nsRefreshDriver::FlushForceNotifyContentfulPaintPresContext() {
|
|
while (!mForceNotifyContentfulPaintPresContexts.IsEmpty()) {
|
|
WeakPtr<nsPresContext> presContext =
|
|
mForceNotifyContentfulPaintPresContexts.PopLastElement();
|
|
if (presContext) {
|
|
presContext->NotifyContentfulPaint();
|
|
}
|
|
}
|
|
}
|
|
|
|
void nsRefreshDriver::RunDelayedEventsSoon() {
|
|
// Place entries for delayed events into their corresponding normal list,
|
|
// and schedule a refresh. When these delayed events run, if their document
|
|
// still has events suppressed then they will be readded to the delayed
|
|
// events list.
|
|
|
|
mScrollEvents.AppendElements(mDelayedScrollEvents);
|
|
mDelayedScrollEvents.Clear();
|
|
|
|
mResizeEventFlushObservers.AppendElements(mDelayedResizeEventFlushObservers);
|
|
mDelayedResizeEventFlushObservers.Clear();
|
|
|
|
EnsureTimerStarted();
|
|
}
|
|
|
|
bool nsRefreshDriver::CanDoCatchUpTick() {
|
|
if (mTestControllingRefreshes || !mActiveTimer) {
|
|
return false;
|
|
}
|
|
|
|
// If we've already ticked for the current timer refresh (or more recently
|
|
// than that), then we don't need to do any catching up.
|
|
if (mMostRecentRefresh >= mActiveTimer->MostRecentRefresh()) {
|
|
return false;
|
|
}
|
|
|
|
if (mTickVsyncTime.IsNull()) {
|
|
// Don't try to run a catch-up tick before there has been at least one
|
|
// normal tick. The catch-up tick could negatively affect page load
|
|
// performance.
|
|
return false;
|
|
}
|
|
|
|
if (mPresContext && mPresContext->Document()->GetReadyStateEnum() <
|
|
Document::READYSTATE_COMPLETE) {
|
|
// Don't try to run a catch-up tick before the page has finished loading.
|
|
// The catch-up tick could negatively affect page load performance.
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool nsRefreshDriver::CanDoExtraTick() {
|
|
// Only allow one extra tick per normal vsync tick.
|
|
if (mAttemptedExtraTickSinceLastVsync) {
|
|
return false;
|
|
}
|
|
|
|
// If we don't have a timer, or we didn't tick on the timer's
|
|
// refresh then we can't do an 'extra' tick (but we may still
|
|
// do a catch up tick).
|
|
if (!mActiveTimer ||
|
|
mActiveTimer->MostRecentRefresh() != mMostRecentRefresh) {
|
|
return false;
|
|
}
|
|
|
|
// Grab the current timestamp before checking the tick hint to be sure
|
|
// sure that it's equal or smaller than the value used within checking
|
|
// the tick hint.
|
|
TimeStamp now = TimeStamp::Now();
|
|
Maybe<TimeStamp> nextTick = mActiveTimer->GetNextTickHint();
|
|
int32_t minimumRequiredTime = StaticPrefs::layout_extra_tick_minimum_ms();
|
|
// If there's less than 4 milliseconds until the next tick, it's probably
|
|
// not worth trying to catch up.
|
|
if (minimumRequiredTime < 0 || !nextTick ||
|
|
(*nextTick - now) < TimeDuration::FromMilliseconds(minimumRequiredTime)) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void nsRefreshDriver::EnsureTimerStarted(EnsureTimerStartedFlags aFlags) {
|
|
// FIXME: Bug 1346065: We should also assert the case where we have
|
|
// STYLO_THREADS=1.
|
|
MOZ_ASSERT(!ServoStyleSet::IsInServoTraversal() || NS_IsMainThread(),
|
|
"EnsureTimerStarted should be called only when we are not "
|
|
"in servo traversal or on the main-thread");
|
|
|
|
if (mTestControllingRefreshes) return;
|
|
|
|
if (!mRefreshTimerStartedCause) {
|
|
mRefreshTimerStartedCause = profiler_capture_backtrace();
|
|
}
|
|
|
|
// will it already fire, and no other changes needed?
|
|
if (mActiveTimer && !(aFlags & eForceAdjustTimer)) {
|
|
// If we're being called from within a user input handler, and we think
|
|
// there's time to rush an extra tick immediately, then schedule a runnable
|
|
// to run the extra tick.
|
|
if (mUserInputProcessingCount && CanDoExtraTick()) {
|
|
RefPtr<nsRefreshDriver> self = this;
|
|
NS_DispatchToCurrentThreadQueue(
|
|
NS_NewRunnableFunction(
|
|
"RefreshDriver::EnsureTimerStarted::extra",
|
|
[self]() -> void {
|
|
// Re-check if we can still do an extra tick, in case anything
|
|
// changed while the runnable was pending.
|
|
if (self->CanDoExtraTick()) {
|
|
PROFILER_MARKER_UNTYPED("ExtraRefreshDriverTick", GRAPHICS);
|
|
LOG("[%p] Doing extra tick for user input", self.get());
|
|
self->mAttemptedExtraTickSinceLastVsync = true;
|
|
self->Tick(self->mActiveTimer->MostRecentRefreshVsyncId(),
|
|
self->mActiveTimer->MostRecentRefresh(),
|
|
IsExtraTick::Yes);
|
|
}
|
|
}),
|
|
EventQueuePriority::Vsync);
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (IsFrozen() || !mPresContext) {
|
|
// If we don't want to start it now, or we've been disconnected.
|
|
StopTimer();
|
|
return;
|
|
}
|
|
|
|
if (mPresContext->Document()->IsBeingUsedAsImage()) {
|
|
// Image documents receive ticks from clients' refresh drivers.
|
|
// XXXdholbert Exclude SVG-in-opentype fonts from this optimization, until
|
|
// they receive refresh-driver ticks from their client docs (bug 1107252).
|
|
if (!mPresContext->Document()->IsSVGGlyphsDocument()) {
|
|
MOZ_ASSERT(!mActiveTimer,
|
|
"image doc refresh driver should never have its own timer");
|
|
return;
|
|
}
|
|
}
|
|
|
|
// We got here because we're either adjusting the time *or* we're
|
|
// starting it for the first time. Add to the right timer,
|
|
// prehaps removing it from a previously-set one.
|
|
RefreshDriverTimer* newTimer = ChooseTimer();
|
|
if (newTimer != mActiveTimer) {
|
|
if (mActiveTimer) mActiveTimer->RemoveRefreshDriver(this);
|
|
mActiveTimer = newTimer;
|
|
mActiveTimer->AddRefreshDriver(this);
|
|
|
|
if (!mHasStartedTimerAtLeastOnce) {
|
|
mHasStartedTimerAtLeastOnce = true;
|
|
if (profiler_thread_is_being_profiled_for_markers()) {
|
|
nsCString text = "initial timer start "_ns;
|
|
if (mPresContext->Document()->GetDocumentURI()) {
|
|
text.Append(nsContentUtils::TruncatedURLForDisplay(
|
|
mPresContext->Document()->GetDocumentURI()));
|
|
}
|
|
|
|
PROFILER_MARKER_TEXT("nsRefreshDriver", LAYOUT,
|
|
MarkerOptions(MarkerInnerWindowIdFromDocShell(
|
|
GetDocShell(mPresContext))),
|
|
text);
|
|
}
|
|
}
|
|
|
|
// If the timer has ticked since we last ticked, consider doing a 'catch-up'
|
|
// tick immediately.
|
|
if (CanDoCatchUpTick()) {
|
|
RefPtr<nsRefreshDriver> self = this;
|
|
NS_DispatchToCurrentThreadQueue(
|
|
NS_NewRunnableFunction(
|
|
"RefreshDriver::EnsureTimerStarted::catch-up",
|
|
[self]() -> void {
|
|
// Re-check if we can still do a catch-up, in case anything
|
|
// changed while the runnable was pending.
|
|
if (self->CanDoCatchUpTick()) {
|
|
LOG("[%p] Doing catch up tick", self.get());
|
|
self->Tick(self->mActiveTimer->MostRecentRefreshVsyncId(),
|
|
self->mActiveTimer->MostRecentRefresh());
|
|
}
|
|
}),
|
|
EventQueuePriority::Vsync);
|
|
}
|
|
}
|
|
|
|
// When switching from an inactive timer to an active timer, the root
|
|
// refresh driver is skipped due to being set to the content refresh
|
|
// driver's timestamp. In case of EnsureTimerStarted is called from
|
|
// ScheduleViewManagerFlush, we should avoid this behavior to flush
|
|
// a paint in the same tick on the root refresh driver.
|
|
if (aFlags & eNeverAdjustTimer) {
|
|
return;
|
|
}
|
|
|
|
// Since the different timers are sampled at different rates, when switching
|
|
// timers, the most recent refresh of the new timer may be *before* the
|
|
// most recent refresh of the old timer.
|
|
// If we are restoring the refresh driver from test control, the time is
|
|
// expected to go backwards (see bug 1043078), otherwise we just keep the most
|
|
// recent tick of this driver (which may be older than the most recent tick of
|
|
// the timer).
|
|
if (!(aFlags & eAllowTimeToGoBackwards)) {
|
|
return;
|
|
}
|
|
|
|
if (mMostRecentRefresh != mActiveTimer->MostRecentRefresh()) {
|
|
mMostRecentRefresh = mActiveTimer->MostRecentRefresh();
|
|
|
|
for (nsATimerAdjustmentObserver* obs :
|
|
mTimerAdjustmentObservers.EndLimitedRange()) {
|
|
obs->NotifyTimerAdjusted(mMostRecentRefresh);
|
|
}
|
|
}
|
|
}
|
|
|
|
void nsRefreshDriver::StopTimer() {
|
|
if (!mActiveTimer) return;
|
|
|
|
mActiveTimer->RemoveRefreshDriver(this);
|
|
mActiveTimer = nullptr;
|
|
mRefreshTimerStartedCause = nullptr;
|
|
}
|
|
|
|
uint32_t nsRefreshDriver::ObserverCount() const {
|
|
uint32_t sum = 0;
|
|
for (const ObserverArray& array : mObservers) {
|
|
sum += array.Length();
|
|
}
|
|
|
|
// Even while throttled, we need to process layout and style changes. Style
|
|
// changes can trigger transitions which fire events when they complete, and
|
|
// layout changes can affect media queries on child documents, triggering
|
|
// style changes, etc.
|
|
sum += mAnimationEventFlushObservers.Length();
|
|
sum += mResizeEventFlushObservers.Length();
|
|
sum += mStyleFlushObservers.Length();
|
|
sum += mLayoutFlushObservers.Length();
|
|
sum += mPendingFullscreenEvents.Length();
|
|
sum += mFrameRequestCallbackDocs.Length();
|
|
sum += mThrottledFrameRequestCallbackDocs.Length();
|
|
sum += mViewManagerFlushIsPending;
|
|
sum += mEarlyRunners.Length();
|
|
sum += mTimerAdjustmentObservers.Length();
|
|
sum += mAutoFocusFlushDocuments.Length();
|
|
return sum;
|
|
}
|
|
|
|
bool nsRefreshDriver::HasObservers() const {
|
|
for (const ObserverArray& array : mObservers) {
|
|
if (!array.IsEmpty()) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
// We should NOT count mTimerAdjustmentObservers here since this method is
|
|
// used to determine whether or not to stop the timer or re-start it and timer
|
|
// adjustment observers should not influence timer starting or stopping.
|
|
return mViewManagerFlushIsPending || !mStyleFlushObservers.IsEmpty() ||
|
|
!mLayoutFlushObservers.IsEmpty() ||
|
|
!mAnimationEventFlushObservers.IsEmpty() ||
|
|
!mResizeEventFlushObservers.IsEmpty() ||
|
|
!mPendingFullscreenEvents.IsEmpty() ||
|
|
!mFrameRequestCallbackDocs.IsEmpty() ||
|
|
!mThrottledFrameRequestCallbackDocs.IsEmpty() ||
|
|
!mAutoFocusFlushDocuments.IsEmpty() || !mEarlyRunners.IsEmpty();
|
|
}
|
|
|
|
void nsRefreshDriver::AppendObserverDescriptionsToString(
|
|
nsACString& aStr) const {
|
|
for (const ObserverArray& array : mObservers) {
|
|
for (const auto& observer : array.EndLimitedRange()) {
|
|
aStr.AppendPrintf("%s [%s], ", observer.mDescription,
|
|
kFlushTypeNames[observer.mFlushType]);
|
|
}
|
|
}
|
|
if (mViewManagerFlushIsPending) {
|
|
aStr.AppendLiteral("View manager flush pending, ");
|
|
}
|
|
if (!mAnimationEventFlushObservers.IsEmpty()) {
|
|
aStr.AppendPrintf("%zux Animation event flush observer, ",
|
|
mAnimationEventFlushObservers.Length());
|
|
}
|
|
if (!mResizeEventFlushObservers.IsEmpty()) {
|
|
aStr.AppendPrintf("%zux Resize event flush observer, ",
|
|
mResizeEventFlushObservers.Length());
|
|
}
|
|
if (!mStyleFlushObservers.IsEmpty()) {
|
|
aStr.AppendPrintf("%zux Style flush observer, ",
|
|
mStyleFlushObservers.Length());
|
|
}
|
|
if (!mLayoutFlushObservers.IsEmpty()) {
|
|
aStr.AppendPrintf("%zux Layout flush observer, ",
|
|
mLayoutFlushObservers.Length());
|
|
}
|
|
if (!mPendingFullscreenEvents.IsEmpty()) {
|
|
aStr.AppendPrintf("%zux Pending fullscreen event, ",
|
|
mPendingFullscreenEvents.Length());
|
|
}
|
|
if (!mFrameRequestCallbackDocs.IsEmpty()) {
|
|
aStr.AppendPrintf("%zux Frame request callback doc, ",
|
|
mFrameRequestCallbackDocs.Length());
|
|
}
|
|
if (!mThrottledFrameRequestCallbackDocs.IsEmpty()) {
|
|
aStr.AppendPrintf("%zux Throttled frame request callback doc, ",
|
|
mThrottledFrameRequestCallbackDocs.Length());
|
|
}
|
|
if (!mAutoFocusFlushDocuments.IsEmpty()) {
|
|
aStr.AppendPrintf("%zux AutoFocus flush doc, ",
|
|
mAutoFocusFlushDocuments.Length());
|
|
}
|
|
if (!mEarlyRunners.IsEmpty()) {
|
|
aStr.AppendPrintf("%zux Early runner, ", mEarlyRunners.Length());
|
|
}
|
|
// Remove last ", "
|
|
aStr.Truncate(aStr.Length() - 2);
|
|
}
|
|
|
|
bool nsRefreshDriver::HasImageRequests() const {
|
|
for (const auto& data : mStartTable.Values()) {
|
|
if (!data->mEntries.IsEmpty()) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return !mRequests.IsEmpty();
|
|
}
|
|
|
|
auto nsRefreshDriver::GetReasonsToTick() const -> TickReasons {
|
|
TickReasons reasons = TickReasons::eNone;
|
|
if (HasObservers()) {
|
|
reasons |= TickReasons::eHasObservers;
|
|
}
|
|
if (HasImageRequests()) {
|
|
reasons |= TickReasons::eHasImageRequests;
|
|
}
|
|
if (mNeedToUpdateIntersectionObservations) {
|
|
reasons |= TickReasons::eNeedsToUpdateIntersectionObservations;
|
|
}
|
|
if (mNeedToUpdateContentRelevancy) {
|
|
reasons |= TickReasons::eNeedsToUpdateContentRelevancy;
|
|
}
|
|
if (!mVisualViewportResizeEvents.IsEmpty()) {
|
|
reasons |= TickReasons::eHasVisualViewportResizeEvents;
|
|
}
|
|
if (!mScrollEvents.IsEmpty()) {
|
|
reasons |= TickReasons::eHasScrollEvents;
|
|
}
|
|
if (!mVisualViewportScrollEvents.IsEmpty()) {
|
|
reasons |= TickReasons::eHasVisualViewportScrollEvents;
|
|
}
|
|
return reasons;
|
|
}
|
|
|
|
void nsRefreshDriver::AppendTickReasonsToString(TickReasons aReasons,
|
|
nsACString& aStr) const {
|
|
if (aReasons == TickReasons::eNone) {
|
|
aStr.AppendLiteral(" <none>");
|
|
return;
|
|
}
|
|
|
|
if (aReasons & TickReasons::eHasObservers) {
|
|
aStr.AppendLiteral(" HasObservers (");
|
|
AppendObserverDescriptionsToString(aStr);
|
|
aStr.AppendLiteral(")");
|
|
}
|
|
if (aReasons & TickReasons::eHasImageRequests) {
|
|
aStr.AppendLiteral(" HasImageAnimations");
|
|
}
|
|
if (aReasons & TickReasons::eNeedsToUpdateIntersectionObservations) {
|
|
aStr.AppendLiteral(" NeedsToUpdateIntersectionObservations");
|
|
}
|
|
if (aReasons & TickReasons::eNeedsToUpdateContentRelevancy) {
|
|
aStr.AppendLiteral(" NeedsToUpdateContentRelevancy");
|
|
}
|
|
if (aReasons & TickReasons::eHasVisualViewportResizeEvents) {
|
|
aStr.AppendLiteral(" HasVisualViewportResizeEvents");
|
|
}
|
|
if (aReasons & TickReasons::eHasScrollEvents) {
|
|
aStr.AppendLiteral(" HasScrollEvents");
|
|
}
|
|
if (aReasons & TickReasons::eHasVisualViewportScrollEvents) {
|
|
aStr.AppendLiteral(" HasVisualViewportScrollEvents");
|
|
}
|
|
}
|
|
|
|
bool nsRefreshDriver::
|
|
ShouldKeepTimerRunningWhileWaitingForFirstContentfulPaint() {
|
|
// On top level content pages keep the timer running initially so that we
|
|
// paint the page soon enough.
|
|
if (mThrottled || mTestControllingRefreshes || !XRE_IsContentProcess() ||
|
|
!mPresContext->Document()->IsTopLevelContentDocument() ||
|
|
mPresContext->Document()->IsInitialDocument() ||
|
|
gfxPlatform::IsInLayoutAsapMode() || mPresContext->HadContentfulPaint() ||
|
|
mPresContext->Document()->GetReadyStateEnum() ==
|
|
Document::READYSTATE_COMPLETE) {
|
|
return false;
|
|
}
|
|
if (mBeforeFirstContentfulPaintTimerRunningLimit.IsNull()) {
|
|
// Don't let the timer to run forever, so limit to 4s for now.
|
|
mBeforeFirstContentfulPaintTimerRunningLimit =
|
|
TimeStamp::Now() + TimeDuration::FromSeconds(4.0f);
|
|
}
|
|
|
|
return TimeStamp::Now() <= mBeforeFirstContentfulPaintTimerRunningLimit;
|
|
}
|
|
|
|
bool nsRefreshDriver::ShouldKeepTimerRunningAfterPageLoad() {
|
|
if (mHasExceededAfterLoadTickPeriod ||
|
|
!StaticPrefs::layout_keep_ticking_after_load_ms() || mThrottled ||
|
|
mTestControllingRefreshes || !XRE_IsContentProcess() ||
|
|
!mPresContext->Document()->IsTopLevelContentDocument() ||
|
|
TaskController::Get()->PendingMainthreadTaskCountIncludingSuspended() ==
|
|
0 ||
|
|
gfxPlatform::IsInLayoutAsapMode()) {
|
|
// Make the next check faster.
|
|
mHasExceededAfterLoadTickPeriod = true;
|
|
return false;
|
|
}
|
|
|
|
nsPIDOMWindowInner* innerWindow = mPresContext->Document()->GetInnerWindow();
|
|
if (!innerWindow) {
|
|
return false;
|
|
}
|
|
auto* perf =
|
|
static_cast<PerformanceMainThread*>(innerWindow->GetPerformance());
|
|
if (!perf) {
|
|
return false;
|
|
}
|
|
nsDOMNavigationTiming* timing = perf->GetDOMTiming();
|
|
if (!timing) {
|
|
return false;
|
|
}
|
|
TimeStamp loadend = timing->LoadEventEnd();
|
|
if (!loadend) {
|
|
return false;
|
|
}
|
|
// Keep ticking after the page load for some time.
|
|
const bool retval =
|
|
(loadend + TimeDuration::FromMilliseconds(
|
|
StaticPrefs::layout_keep_ticking_after_load_ms())) >
|
|
TimeStamp::Now();
|
|
if (!retval) {
|
|
mHasExceededAfterLoadTickPeriod = true;
|
|
}
|
|
return retval;
|
|
}
|
|
|
|
nsRefreshDriver::ObserverArray& nsRefreshDriver::ArrayFor(
|
|
FlushType aFlushType) {
|
|
switch (aFlushType) {
|
|
case FlushType::Event:
|
|
return mObservers[0];
|
|
case FlushType::Style:
|
|
case FlushType::Frames:
|
|
return mObservers[1];
|
|
case FlushType::Layout:
|
|
return mObservers[2];
|
|
case FlushType::Display:
|
|
return mObservers[3];
|
|
default:
|
|
MOZ_CRASH("We don't track refresh observers for this flush type");
|
|
}
|
|
}
|
|
|
|
/*
|
|
* nsITimerCallback implementation
|
|
*/
|
|
|
|
void nsRefreshDriver::DoTick() {
|
|
MOZ_ASSERT(!IsFrozen(), "Why are we notified while frozen?");
|
|
MOZ_ASSERT(mPresContext, "Why are we notified after disconnection?");
|
|
MOZ_ASSERT(!nsContentUtils::GetCurrentJSContext(),
|
|
"Shouldn't have a JSContext on the stack");
|
|
|
|
if (mTestControllingRefreshes) {
|
|
Tick(VsyncId(), mMostRecentRefresh);
|
|
} else {
|
|
Tick(VsyncId(), TimeStamp::Now());
|
|
}
|
|
}
|
|
|
|
struct DocumentFrameCallbacks {
|
|
explicit DocumentFrameCallbacks(Document* aDocument) : mDocument(aDocument) {}
|
|
|
|
RefPtr<Document> mDocument;
|
|
nsTArray<FrameRequest> mCallbacks;
|
|
};
|
|
|
|
static bool HasPendingAnimations(PresShell* aPresShell) {
|
|
Document* doc = aPresShell->GetDocument();
|
|
if (!doc) {
|
|
return false;
|
|
}
|
|
|
|
PendingAnimationTracker* tracker = doc->GetPendingAnimationTracker();
|
|
return tracker && tracker->HasPendingAnimations();
|
|
}
|
|
|
|
/**
|
|
* Return a list of all the child docShells in a given root docShell that are
|
|
* visible and are recording markers for the profilingTimeline
|
|
*/
|
|
static void GetProfileTimelineSubDocShells(nsDocShell* aRootDocShell,
|
|
nsTArray<nsDocShell*>& aShells) {
|
|
if (!aRootDocShell) {
|
|
return;
|
|
}
|
|
|
|
if (TimelineConsumers::IsEmpty()) {
|
|
return;
|
|
}
|
|
|
|
RefPtr<BrowsingContext> bc = aRootDocShell->GetBrowsingContext();
|
|
if (!bc) {
|
|
return;
|
|
}
|
|
|
|
bc->PostOrderWalk([&](BrowsingContext* aContext) {
|
|
if (!aContext->IsActive()) {
|
|
return;
|
|
}
|
|
|
|
nsDocShell* shell = nsDocShell::Cast(aContext->GetDocShell());
|
|
if (!shell || !shell->GetRecordProfileTimelineMarkers()) {
|
|
// This process isn't painting OOP iframes so we ignore
|
|
// docshells that are OOP.
|
|
return;
|
|
}
|
|
|
|
aShells.AppendElement(shell);
|
|
});
|
|
}
|
|
|
|
static void TakeFrameRequestCallbacksFrom(
|
|
Document* aDocument, nsTArray<DocumentFrameCallbacks>& aTarget) {
|
|
aTarget.AppendElement(aDocument);
|
|
aDocument->TakeFrameRequestCallbacks(aTarget.LastElement().mCallbacks);
|
|
}
|
|
|
|
void nsRefreshDriver::ScheduleAutoFocusFlush(Document* aDocument) {
|
|
MOZ_ASSERT(!mAutoFocusFlushDocuments.Contains(aDocument));
|
|
mAutoFocusFlushDocuments.AppendElement(aDocument);
|
|
EnsureTimerStarted();
|
|
}
|
|
|
|
void nsRefreshDriver::FlushAutoFocusDocuments() {
|
|
nsTArray<RefPtr<Document>> docs(std::move(mAutoFocusFlushDocuments));
|
|
|
|
for (const auto& doc : docs) {
|
|
MOZ_KnownLive(doc)->FlushAutoFocusCandidates();
|
|
}
|
|
}
|
|
|
|
void nsRefreshDriver::CancelFlushAutoFocus(Document* aDocument) {
|
|
mAutoFocusFlushDocuments.RemoveElement(aDocument);
|
|
}
|
|
|
|
// https://fullscreen.spec.whatwg.org/#run-the-fullscreen-steps
|
|
void nsRefreshDriver::RunFullscreenSteps() {
|
|
// Swap out the current pending events
|
|
nsTArray<UniquePtr<PendingFullscreenEvent>> pendings(
|
|
std::move(mPendingFullscreenEvents));
|
|
for (UniquePtr<PendingFullscreenEvent>& event : pendings) {
|
|
event->Dispatch();
|
|
}
|
|
}
|
|
|
|
void nsRefreshDriver::UpdateIntersectionObservations(TimeStamp aNowTime) {
|
|
AUTO_PROFILER_LABEL_RELEVANT_FOR_JS("Compute intersections", LAYOUT);
|
|
|
|
AutoTArray<RefPtr<Document>, 32> documents;
|
|
|
|
if (mPresContext->Document()->HasIntersectionObservers()) {
|
|
documents.AppendElement(mPresContext->Document());
|
|
}
|
|
|
|
mPresContext->Document()->CollectDescendantDocuments(
|
|
documents, [](const Document* document) -> bool {
|
|
return document->HasIntersectionObservers();
|
|
});
|
|
|
|
for (const auto& doc : documents) {
|
|
doc->UpdateIntersectionObservations(aNowTime);
|
|
doc->ScheduleIntersectionObserverNotification();
|
|
}
|
|
|
|
mNeedToUpdateIntersectionObservations = false;
|
|
}
|
|
|
|
void nsRefreshDriver::UpdateRelevancyOfContentVisibilityAutoFrames() {
|
|
if (!mNeedToUpdateContentRelevancy) {
|
|
return;
|
|
}
|
|
|
|
if (RefPtr<PresShell> topLevelPresShell = mPresContext->GetPresShell()) {
|
|
topLevelPresShell->UpdateRelevancyOfContentVisibilityAutoFrames();
|
|
}
|
|
|
|
mPresContext->Document()->EnumerateSubDocuments([](Document& aSubDoc) {
|
|
if (PresShell* presShell = aSubDoc.GetPresShell()) {
|
|
presShell->UpdateRelevancyOfContentVisibilityAutoFrames();
|
|
}
|
|
return CallState::Continue;
|
|
});
|
|
|
|
mNeedToUpdateContentRelevancy = false;
|
|
}
|
|
|
|
void nsRefreshDriver::DispatchAnimationEvents() {
|
|
if (!mPresContext) {
|
|
return;
|
|
}
|
|
|
|
// Hold all AnimationEventDispatcher in mAnimationEventFlushObservers as
|
|
// a RefPtr<> array since each AnimationEventDispatcher might be destroyed
|
|
// during processing the previous dispatcher.
|
|
AutoTArray<RefPtr<AnimationEventDispatcher>, 16> dispatchers;
|
|
dispatchers.AppendElements(mAnimationEventFlushObservers);
|
|
mAnimationEventFlushObservers.Clear();
|
|
|
|
for (auto& dispatcher : dispatchers) {
|
|
dispatcher->DispatchEvents();
|
|
}
|
|
}
|
|
|
|
void nsRefreshDriver::RunFrameRequestCallbacks(TimeStamp aNowTime) {
|
|
// Grab all of our frame request callbacks up front.
|
|
nsTArray<DocumentFrameCallbacks> frameRequestCallbacks(
|
|
mFrameRequestCallbackDocs.Length() +
|
|
mThrottledFrameRequestCallbackDocs.Length());
|
|
|
|
// First, grab throttled frame request callbacks.
|
|
{
|
|
nsTArray<Document*> docsToRemove;
|
|
|
|
// We always tick throttled frame requests if the entire refresh driver is
|
|
// throttled, because in that situation throttled frame requests tick at the
|
|
// same frequency as non-throttled frame requests.
|
|
bool tickThrottledFrameRequests = mThrottled;
|
|
|
|
if (!tickThrottledFrameRequests &&
|
|
aNowTime >= mNextThrottledFrameRequestTick) {
|
|
mNextThrottledFrameRequestTick =
|
|
aNowTime + mThrottledFrameRequestInterval;
|
|
tickThrottledFrameRequests = true;
|
|
}
|
|
|
|
for (Document* doc : mThrottledFrameRequestCallbackDocs) {
|
|
if (tickThrottledFrameRequests) {
|
|
// We're ticking throttled documents, so grab this document's requests.
|
|
// We don't bother appending to docsToRemove because we're going to
|
|
// clear mThrottledFrameRequestCallbackDocs anyway.
|
|
TakeFrameRequestCallbacksFrom(doc, frameRequestCallbacks);
|
|
} else if (!doc->ShouldThrottleFrameRequests()) {
|
|
// This document is no longer throttled, so grab its requests even
|
|
// though we're not ticking throttled frame requests right now. If
|
|
// this is the first unthrottled document with frame requests, we'll
|
|
// enter high precision mode the next time the callback is scheduled.
|
|
TakeFrameRequestCallbacksFrom(doc, frameRequestCallbacks);
|
|
docsToRemove.AppendElement(doc);
|
|
}
|
|
}
|
|
|
|
// Remove all the documents we're ticking from
|
|
// mThrottledFrameRequestCallbackDocs so they can be readded as needed.
|
|
if (tickThrottledFrameRequests) {
|
|
mThrottledFrameRequestCallbackDocs.Clear();
|
|
} else {
|
|
// XXX(seth): We're using this approach to avoid concurrent modification
|
|
// of mThrottledFrameRequestCallbackDocs. docsToRemove usually has either
|
|
// zero elements or a very small number, so this should be OK in practice.
|
|
for (Document* doc : docsToRemove) {
|
|
mThrottledFrameRequestCallbackDocs.RemoveElement(doc);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Now grab unthrottled frame request callbacks.
|
|
for (Document* doc : mFrameRequestCallbackDocs) {
|
|
TakeFrameRequestCallbacksFrom(doc, frameRequestCallbacks);
|
|
}
|
|
|
|
// Reset mFrameRequestCallbackDocs so they can be readded as needed.
|
|
mFrameRequestCallbackDocs.Clear();
|
|
|
|
if (!frameRequestCallbacks.IsEmpty()) {
|
|
AUTO_PROFILER_TRACING_MARKER_DOCSHELL("Paint",
|
|
"requestAnimationFrame callbacks",
|
|
GRAPHICS, GetDocShell(mPresContext));
|
|
for (const DocumentFrameCallbacks& docCallbacks : frameRequestCallbacks) {
|
|
TimeStamp startTime = TimeStamp::Now();
|
|
|
|
// XXXbz Bug 863140: GetInnerWindow can return the outer
|
|
// window in some cases.
|
|
nsPIDOMWindowInner* innerWindow =
|
|
docCallbacks.mDocument->GetInnerWindow();
|
|
DOMHighResTimeStamp timeStamp = 0;
|
|
if (innerWindow) {
|
|
if (Performance* perf = innerWindow->GetPerformance()) {
|
|
timeStamp = perf->TimeStampToDOMHighResForRendering(aNowTime);
|
|
}
|
|
// else window is partially torn down already
|
|
}
|
|
for (auto& callback : docCallbacks.mCallbacks) {
|
|
if (docCallbacks.mDocument->IsCanceledFrameRequestCallback(
|
|
callback.mHandle)) {
|
|
continue;
|
|
}
|
|
|
|
nsCOMPtr<nsIGlobalObject> global(innerWindow ? innerWindow->AsGlobal()
|
|
: nullptr);
|
|
CallbackDebuggerNotificationGuard guard(
|
|
global, DebuggerNotificationType::RequestAnimationFrameCallback);
|
|
|
|
// MOZ_KnownLive is OK, because the stack array frameRequestCallbacks
|
|
// keeps callback alive and the mCallback strong reference can't be
|
|
// mutated by the call.
|
|
LogFrameRequestCallback::Run run(callback.mCallback);
|
|
MOZ_KnownLive(callback.mCallback)->Call(timeStamp);
|
|
}
|
|
|
|
if (docCallbacks.mDocument->GetReadyStateEnum() ==
|
|
Document::READYSTATE_COMPLETE) {
|
|
Telemetry::AccumulateTimeDelta(
|
|
Telemetry::PERF_REQUEST_ANIMATION_CALLBACK_NON_PAGELOAD_MS,
|
|
startTime, TimeStamp::Now());
|
|
} else {
|
|
Telemetry::AccumulateTimeDelta(
|
|
Telemetry::PERF_REQUEST_ANIMATION_CALLBACK_PAGELOAD_MS, startTime,
|
|
TimeStamp::Now());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static StaticAutoPtr<AutoTArray<RefPtr<Task>, 8>> sPendingIdleTasks;
|
|
|
|
void nsRefreshDriver::DispatchIdleTaskAfterTickUnlessExists(Task* aTask) {
|
|
if (!sPendingIdleTasks) {
|
|
sPendingIdleTasks = new AutoTArray<RefPtr<Task>, 8>();
|
|
} else {
|
|
if (sPendingIdleTasks->Contains(aTask)) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
sPendingIdleTasks->AppendElement(aTask);
|
|
}
|
|
|
|
void nsRefreshDriver::CancelIdleTask(Task* aTask) {
|
|
if (!sPendingIdleTasks) {
|
|
return;
|
|
}
|
|
|
|
sPendingIdleTasks->RemoveElement(aTask);
|
|
|
|
if (sPendingIdleTasks->IsEmpty()) {
|
|
sPendingIdleTasks = nullptr;
|
|
}
|
|
}
|
|
|
|
static CallState ReduceAnimations(Document& aDocument) {
|
|
if (nsPresContext* pc = aDocument.GetPresContext()) {
|
|
if (pc->EffectCompositor()->NeedsReducing()) {
|
|
pc->EffectCompositor()->ReduceAnimations();
|
|
}
|
|
}
|
|
aDocument.EnumerateSubDocuments(ReduceAnimations);
|
|
return CallState::Continue;
|
|
}
|
|
|
|
bool nsRefreshDriver::ShouldStopActivityGracePeriod() const {
|
|
MOZ_ASSERT(mIsGrantingActivityGracePeriod);
|
|
return TimeStamp::Now() - mActivityGracePeriodStart >=
|
|
TimeDuration::FromMilliseconds(
|
|
StaticPrefs::layout_oopif_activity_grace_period_ms());
|
|
}
|
|
|
|
void nsRefreshDriver::Tick(VsyncId aId, TimeStamp aNowTime,
|
|
IsExtraTick aIsExtraTick /* = No */) {
|
|
MOZ_ASSERT(!nsContentUtils::GetCurrentJSContext(),
|
|
"Shouldn't have a JSContext on the stack");
|
|
|
|
// We're either frozen or we were disconnected (likely in the middle
|
|
// of a tick iteration). Just do nothing here, since our
|
|
// prescontext went away.
|
|
if (IsFrozen() || !mPresContext) {
|
|
return;
|
|
}
|
|
|
|
// We can have a race condition where the vsync timestamp
|
|
// is before the most recent refresh due to a forced refresh.
|
|
// The underlying assumption is that the refresh driver tick can only
|
|
// go forward in time, not backwards. To prevent the refresh
|
|
// driver from going back in time, just skip this tick and
|
|
// wait until the next tick.
|
|
// If this is an 'extra' tick, then we expect it to be using the same
|
|
// vsync id and timestamp as the original tick, so also allow those.
|
|
if ((aNowTime <= mMostRecentRefresh) && !mTestControllingRefreshes &&
|
|
aIsExtraTick == IsExtraTick::No) {
|
|
return;
|
|
}
|
|
auto cleanupInExtraTick = MakeScopeExit([&] { mInNormalTick = false; });
|
|
mInNormalTick = aIsExtraTick != IsExtraTick::Yes;
|
|
|
|
bool isPresentingInVR = false;
|
|
#if defined(MOZ_WIDGET_ANDROID)
|
|
isPresentingInVR = gfx::VRManagerChild::IsPresenting();
|
|
#endif // defined(MOZ_WIDGET_ANDROID)
|
|
|
|
if (!isPresentingInVR && IsWaitingForPaint(aNowTime)) {
|
|
// In immersive VR mode, we do not get notifications when frames are
|
|
// presented, so we do not wait for the compositor in that mode.
|
|
|
|
// We're currently suspended waiting for earlier Tick's to
|
|
// be completed (on the Compositor). Mark that we missed the paint
|
|
// and keep waiting.
|
|
PROFILER_MARKER_UNTYPED(
|
|
"RefreshDriverTick waiting for paint", GRAPHICS,
|
|
MarkerInnerWindowIdFromDocShell(GetDocShell(mPresContext)));
|
|
return;
|
|
}
|
|
|
|
TimeStamp previousRefresh = mMostRecentRefresh;
|
|
mMostRecentRefresh = aNowTime;
|
|
|
|
if (mRootRefresh) {
|
|
mRootRefresh->RemoveRefreshObserver(this, FlushType::Style);
|
|
mRootRefresh = nullptr;
|
|
}
|
|
mSkippedPaints = false;
|
|
|
|
RefPtr<PresShell> presShell = mPresContext->GetPresShell();
|
|
if (!presShell) {
|
|
StopTimer();
|
|
return;
|
|
}
|
|
|
|
TickReasons tickReasons = GetReasonsToTick();
|
|
if (tickReasons == TickReasons::eNone) {
|
|
// We no longer have any observers.
|
|
// Discard composition payloads because there is no paint.
|
|
mCompositionPayloads.Clear();
|
|
|
|
// We don't want to stop the timer when observers are initially
|
|
// removed, because sometimes observers can be added and removed
|
|
// often depending on what other things are going on and in that
|
|
// situation we don't want to thrash our timer. So instead we
|
|
// wait until we get a Notify() call when we have no observers
|
|
// before stopping the timer.
|
|
// On top level content pages keep the timer running initially so that we
|
|
// paint the page soon enough.
|
|
if (ShouldKeepTimerRunningWhileWaitingForFirstContentfulPaint()) {
|
|
PROFILER_MARKER(
|
|
"RefreshDriverTick waiting for first contentful paint", GRAPHICS,
|
|
MarkerInnerWindowIdFromDocShell(GetDocShell(mPresContext)), Tracing,
|
|
"Paint");
|
|
} else if (ShouldKeepTimerRunningAfterPageLoad()) {
|
|
PROFILER_MARKER(
|
|
"RefreshDriverTick after page load", GRAPHICS,
|
|
MarkerInnerWindowIdFromDocShell(GetDocShell(mPresContext)), Tracing,
|
|
"Paint");
|
|
} else {
|
|
StopTimer();
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (StaticPrefs::layout_skip_ticks_while_page_suspended()) {
|
|
Document* doc = mPresContext->Document();
|
|
nsPIDOMWindowInner* win = doc ? doc->GetInnerWindow() : nullptr;
|
|
// Synchronous DOM operations mark the document being in such. Window's
|
|
// suspend can be used also by external code. So we check here them both
|
|
// in order to limit rAF skipping to only those synchronous DOM APIs which
|
|
// also suspend window.
|
|
if (win && win->IsSuspended() && doc->IsInSyncOperation()) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
// Potentially go back to throttled after the grace period is done.
|
|
if (MOZ_UNLIKELY(mIsGrantingActivityGracePeriod) &&
|
|
ShouldStopActivityGracePeriod()) {
|
|
mIsGrantingActivityGracePeriod = false;
|
|
UpdateThrottledState();
|
|
}
|
|
|
|
AUTO_PROFILER_LABEL_RELEVANT_FOR_JS("RefreshDriver tick", LAYOUT);
|
|
|
|
nsAutoCString profilerStr;
|
|
if (profiler_thread_is_being_profiled_for_markers()) {
|
|
profilerStr.AppendLiteral("Tick reasons:");
|
|
AppendTickReasonsToString(tickReasons, profilerStr);
|
|
}
|
|
AUTO_PROFILER_MARKER_TEXT(
|
|
"RefreshDriverTick", GRAPHICS,
|
|
MarkerOptions(
|
|
MarkerStack::TakeBacktrace(std::move(mRefreshTimerStartedCause)),
|
|
MarkerInnerWindowIdFromDocShell(GetDocShell(mPresContext))),
|
|
profilerStr);
|
|
|
|
mResizeSuppressed = false;
|
|
|
|
bool oldInRefresh = mInRefresh;
|
|
auto restoreInRefresh = MakeScopeExit([&] { mInRefresh = oldInRefresh; });
|
|
mInRefresh = true;
|
|
|
|
AutoRestore<TimeStamp> restoreTickStart(mTickStart);
|
|
mTickStart = TimeStamp::Now();
|
|
mTickVsyncId = aId;
|
|
mTickVsyncTime = aNowTime;
|
|
|
|
gfxPlatform::GetPlatform()->SchedulePaintIfDeviceReset();
|
|
|
|
FlushForceNotifyContentfulPaintPresContext();
|
|
|
|
AutoTArray<nsCOMPtr<nsIRunnable>, 16> earlyRunners = std::move(mEarlyRunners);
|
|
for (auto& runner : earlyRunners) {
|
|
runner->Run();
|
|
// Early runners might destroy this pres context.
|
|
if (!mPresContext || !mPresContext->GetPresShell()) {
|
|
StopTimer();
|
|
return;
|
|
}
|
|
}
|
|
|
|
// Resize events should be fired before layout flushes or
|
|
// calling animation frame callbacks.
|
|
AutoTArray<RefPtr<PresShell>, 16> observers;
|
|
observers.AppendElements(mResizeEventFlushObservers);
|
|
for (RefPtr<PresShell>& presShell : Reversed(observers)) {
|
|
if (!mPresContext || !mPresContext->GetPresShell()) {
|
|
StopTimer();
|
|
return;
|
|
}
|
|
// Make sure to not process observers which might have been removed
|
|
// during previous iterations.
|
|
if (!mResizeEventFlushObservers.RemoveElement(presShell)) {
|
|
continue;
|
|
}
|
|
// MOZ_KnownLive because 'observers' is guaranteed to
|
|
// keep it alive.
|
|
//
|
|
// Fixing https://bugzilla.mozilla.org/show_bug.cgi?id=1620312 on its own
|
|
// won't help here, because 'observers' is non-const and we have the
|
|
// Reversed() going on too...
|
|
MOZ_KnownLive(presShell)->FireResizeEvent();
|
|
}
|
|
DispatchVisualViewportResizeEvents();
|
|
|
|
double phaseMetrics[MOZ_ARRAY_LENGTH(mObservers)] = {
|
|
0.0,
|
|
};
|
|
|
|
/*
|
|
* The timer holds a reference to |this| while calling |Notify|.
|
|
* However, implementations of |WillRefresh| are permitted to destroy
|
|
* the pres context, which will cause our |mPresContext| to become
|
|
* null. If this happens, we must stop notifying observers.
|
|
*/
|
|
for (uint32_t i = 0; i < ArrayLength(mObservers); ++i) {
|
|
AutoRecordPhase phaseRecord(&phaseMetrics[i]);
|
|
|
|
for (RefPtr<nsARefreshObserver> obs : mObservers[i].EndLimitedRange()) {
|
|
obs->WillRefresh(aNowTime);
|
|
|
|
if (!mPresContext || !mPresContext->GetPresShell()) {
|
|
StopTimer();
|
|
return;
|
|
}
|
|
}
|
|
|
|
// Any animation timelines updated above may cause animations to queue
|
|
// Promise resolution microtasks. We shouldn't run these, however, until we
|
|
// have fully updated the animation state.
|
|
//
|
|
// As per the "update animations and send events" procedure[1], we should
|
|
// remove replaced animations and then run these microtasks before
|
|
// dispatching the corresponding animation events.
|
|
//
|
|
// [1]
|
|
// https://drafts.csswg.org/web-animations-1/#update-animations-and-send-events
|
|
if (i == 1) {
|
|
nsAutoMicroTask mt;
|
|
ReduceAnimations(*mPresContext->Document());
|
|
}
|
|
|
|
// Check if running the microtask checkpoint caused the pres context to
|
|
// be destroyed.
|
|
if (i == 1 && (!mPresContext || !mPresContext->GetPresShell())) {
|
|
StopTimer();
|
|
return;
|
|
}
|
|
|
|
if (i == 1) {
|
|
// This is the FlushType::Style case.
|
|
|
|
FlushAutoFocusDocuments();
|
|
DispatchScrollEvents();
|
|
DispatchVisualViewportScrollEvents();
|
|
DispatchAnimationEvents();
|
|
RunFullscreenSteps();
|
|
RunFrameRequestCallbacks(aNowTime);
|
|
|
|
if (mPresContext && mPresContext->GetPresShell()) {
|
|
AutoTArray<PresShell*, 16> observers;
|
|
observers.AppendElements(mStyleFlushObservers);
|
|
for (uint32_t j = observers.Length();
|
|
j && mPresContext && mPresContext->GetPresShell(); --j) {
|
|
// Make sure to not process observers which might have been removed
|
|
// during previous iterations.
|
|
PresShell* rawPresShell = observers[j - 1];
|
|
if (!mStyleFlushObservers.RemoveElement(rawPresShell)) {
|
|
continue;
|
|
}
|
|
|
|
LogPresShellObserver::Run run(rawPresShell, this);
|
|
|
|
RefPtr<PresShell> presShell = rawPresShell;
|
|
presShell->mObservingStyleFlushes = false;
|
|
presShell->FlushPendingNotifications(
|
|
ChangesToFlush(FlushType::Style, false));
|
|
// Inform the FontFaceSet that we ticked, so that it can resolve its
|
|
// ready promise if it needs to (though it might still be waiting on
|
|
// a layout flush).
|
|
presShell->NotifyFontFaceSetOnRefresh();
|
|
mNeedToRecomputeVisibility = true;
|
|
|
|
// Record the telemetry for events that occurred between ticks.
|
|
presShell->PingPerTickTelemetry(FlushType::Style);
|
|
}
|
|
}
|
|
} else if (i == 2) {
|
|
// This is the FlushType::Layout case.
|
|
AutoTArray<PresShell*, 16> observers;
|
|
observers.AppendElements(mLayoutFlushObservers);
|
|
for (uint32_t j = observers.Length();
|
|
j && mPresContext && mPresContext->GetPresShell(); --j) {
|
|
// Make sure to not process observers which might have been removed
|
|
// during previous iterations.
|
|
PresShell* rawPresShell = observers[j - 1];
|
|
if (!mLayoutFlushObservers.RemoveElement(rawPresShell)) {
|
|
continue;
|
|
}
|
|
|
|
LogPresShellObserver::Run run(rawPresShell, this);
|
|
|
|
RefPtr<PresShell> presShell = rawPresShell;
|
|
presShell->mObservingLayoutFlushes = false;
|
|
presShell->mWasLastReflowInterrupted = false;
|
|
const auto flushType = HasPendingAnimations(presShell)
|
|
? FlushType::Layout
|
|
: FlushType::InterruptibleLayout;
|
|
const ChangesToFlush ctf(flushType, false);
|
|
presShell->FlushPendingNotifications(ctf);
|
|
if (presShell->FixUpFocus()) {
|
|
presShell->FlushPendingNotifications(ctf);
|
|
}
|
|
|
|
// Inform the FontFaceSet that we ticked, so that it can resolve its
|
|
// ready promise if it needs to.
|
|
presShell->NotifyFontFaceSetOnRefresh();
|
|
mNeedToRecomputeVisibility = true;
|
|
|
|
// Record the telemetry for events that occurred between ticks.
|
|
presShell->PingPerTickTelemetry(FlushType::Layout);
|
|
}
|
|
}
|
|
|
|
// The pres context may be destroyed during we do the flushing.
|
|
if (!mPresContext || !mPresContext->GetPresShell()) {
|
|
StopTimer();
|
|
return;
|
|
}
|
|
}
|
|
|
|
// Recompute approximate frame visibility if it's necessary and enough time
|
|
// has passed since the last time we did it.
|
|
if (mNeedToRecomputeVisibility && !mThrottled &&
|
|
aNowTime >= mNextRecomputeVisibilityTick &&
|
|
!presShell->IsPaintingSuppressed()) {
|
|
mNextRecomputeVisibilityTick = aNowTime + mMinRecomputeVisibilityInterval;
|
|
mNeedToRecomputeVisibility = false;
|
|
|
|
presShell->ScheduleApproximateFrameVisibilityUpdateNow();
|
|
}
|
|
|
|
// Update any popups that may need to be moved or hidden due to their
|
|
// anchor changing.
|
|
if (nsXULPopupManager* pm = nsXULPopupManager::GetInstance()) {
|
|
pm->UpdatePopupPositions(this);
|
|
}
|
|
|
|
// Update the relevancy of the content of any `content-visibility: auto`
|
|
// elements. The specification says: "Specifically, such changes will
|
|
// take effect between steps 13 and 14 of Update the Rendering step of
|
|
// the Processing Model (between “run the animation frame callbacks” and
|
|
// “run the update intersection observations steps”)."
|
|
// https://drafts.csswg.org/css-contain/#cv-notes
|
|
UpdateRelevancyOfContentVisibilityAutoFrames();
|
|
|
|
UpdateIntersectionObservations(aNowTime);
|
|
|
|
/*
|
|
* Perform notification to imgIRequests subscribed to listen
|
|
* for refresh events.
|
|
*/
|
|
|
|
for (const auto& entry : mStartTable) {
|
|
const uint32_t& delay = entry.GetKey();
|
|
ImageStartData* data = entry.GetWeak();
|
|
|
|
if (data->mEntries.IsEmpty()) {
|
|
continue;
|
|
}
|
|
|
|
if (data->mStartTime) {
|
|
TimeStamp& start = *data->mStartTime;
|
|
|
|
if (previousRefresh >= start && aNowTime >= start) {
|
|
TimeDuration prev = previousRefresh - start;
|
|
TimeDuration curr = aNowTime - start;
|
|
uint32_t prevMultiple = uint32_t(prev.ToMilliseconds()) / delay;
|
|
|
|
// We want to trigger images' refresh if we've just crossed over a
|
|
// multiple of the first image's start time. If so, set the animation
|
|
// start time to the nearest multiple of the delay and move all the
|
|
// images in this table to the main requests table.
|
|
if (prevMultiple != uint32_t(curr.ToMilliseconds()) / delay) {
|
|
mozilla::TimeStamp desired =
|
|
start + TimeDuration::FromMilliseconds(prevMultiple * delay);
|
|
BeginRefreshingImages(data->mEntries, desired);
|
|
}
|
|
} else {
|
|
// Sometimes the start time can be in the future if we spin a nested
|
|
// event loop and re-entrantly tick. In that case, setting the animation
|
|
// start time to the start time seems like the least bad thing we can
|
|
// do.
|
|
mozilla::TimeStamp desired = start;
|
|
BeginRefreshingImages(data->mEntries, desired);
|
|
}
|
|
} else {
|
|
// This is the very first time we've drawn images with this time delay.
|
|
// Set the animation start time to "now" and move all the images in this
|
|
// table to the main requests table.
|
|
mozilla::TimeStamp desired = aNowTime;
|
|
BeginRefreshingImages(data->mEntries, desired);
|
|
data->mStartTime.emplace(aNowTime);
|
|
}
|
|
}
|
|
|
|
if (!mRequests.IsEmpty()) {
|
|
// RequestRefresh may run scripts, so it's not safe to directly call it
|
|
// while using a hashtable enumerator to enumerate mRequests in case
|
|
// script modifies the hashtable. Instead, we build a (local) array of
|
|
// images to refresh, and then we refresh each image in that array.
|
|
nsTArray<nsCOMPtr<imgIContainer>> imagesToRefresh(mRequests.Count());
|
|
|
|
for (const auto& req : mRequests) {
|
|
nsCOMPtr<imgIContainer> image;
|
|
if (NS_SUCCEEDED(req->GetImage(getter_AddRefs(image)))) {
|
|
imagesToRefresh.AppendElement(image.forget());
|
|
}
|
|
}
|
|
|
|
for (const auto& image : imagesToRefresh) {
|
|
image->RequestRefresh(aNowTime);
|
|
}
|
|
}
|
|
|
|
double phasePaint = 0.0;
|
|
bool dispatchTasksAfterTick = false;
|
|
if (mViewManagerFlushIsPending) {
|
|
AutoRecordPhase paintRecord(&phasePaint);
|
|
nsCString transactionId;
|
|
if (profiler_thread_is_being_profiled_for_markers()) {
|
|
transactionId.AppendLiteral("Transaction ID: ");
|
|
transactionId.AppendInt((uint64_t)mNextTransactionId);
|
|
}
|
|
AUTO_PROFILER_MARKER_TEXT(
|
|
"ViewManagerFlush", GRAPHICS,
|
|
MarkerOptions(
|
|
MarkerInnerWindowIdFromDocShell(GetDocShell(mPresContext)),
|
|
MarkerStack::TakeBacktrace(std::move(mViewManagerFlushCause))),
|
|
transactionId);
|
|
|
|
// Forward our composition payloads to the layer manager.
|
|
if (!mCompositionPayloads.IsEmpty()) {
|
|
nsCOMPtr<nsIWidget> widget = mPresContext->GetRootWidget();
|
|
WindowRenderer* renderer = widget ? widget->GetWindowRenderer() : nullptr;
|
|
if (renderer && renderer->AsWebRender()) {
|
|
renderer->AsWebRender()->RegisterPayloads(mCompositionPayloads);
|
|
}
|
|
mCompositionPayloads.Clear();
|
|
}
|
|
|
|
nsTArray<nsDocShell*> profilingDocShells;
|
|
GetProfileTimelineSubDocShells(GetDocShell(mPresContext),
|
|
profilingDocShells);
|
|
for (nsDocShell* docShell : profilingDocShells) {
|
|
// For the sake of the profile timeline's simplicity, this is flagged as
|
|
// paint even if it includes creating display lists
|
|
MOZ_ASSERT(TimelineConsumers::HasConsumer(docShell));
|
|
TimelineConsumers::AddMarkerForDocShell(docShell, "Paint",
|
|
MarkerTracingType::START);
|
|
}
|
|
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
if (nsLayoutUtils::InvalidationDebuggingIsEnabled()) {
|
|
printf_stderr("Starting ProcessPendingUpdates\n");
|
|
}
|
|
#endif
|
|
|
|
mViewManagerFlushIsPending = false;
|
|
RefPtr<nsViewManager> vm = mPresContext->GetPresShell()->GetViewManager();
|
|
const bool skipPaint = isPresentingInVR;
|
|
// Skip the paint in immersive VR mode because whatever we paint here will
|
|
// not end up on the screen. The screen is displaying WebGL content from a
|
|
// single canvas in that mode.
|
|
if (!skipPaint) {
|
|
PaintTelemetry::AutoRecordPaint record;
|
|
vm->ProcessPendingUpdates();
|
|
}
|
|
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
if (nsLayoutUtils::InvalidationDebuggingIsEnabled()) {
|
|
printf_stderr("Ending ProcessPendingUpdates\n");
|
|
}
|
|
#endif
|
|
|
|
for (nsDocShell* docShell : profilingDocShells) {
|
|
MOZ_ASSERT(TimelineConsumers::HasConsumer(docShell));
|
|
TimelineConsumers::AddMarkerForDocShell(docShell, "Paint",
|
|
MarkerTracingType::END);
|
|
}
|
|
|
|
dispatchTasksAfterTick = true;
|
|
mHasScheduleFlush = false;
|
|
} else {
|
|
// No paint happened, discard composition payloads.
|
|
mCompositionPayloads.Clear();
|
|
}
|
|
|
|
double totalMs = (TimeStamp::Now() - mTickStart).ToMilliseconds();
|
|
|
|
#ifndef ANDROID /* bug 1142079 */
|
|
mozilla::Telemetry::Accumulate(mozilla::Telemetry::REFRESH_DRIVER_TICK,
|
|
static_cast<uint32_t>(totalMs));
|
|
#endif
|
|
|
|
// Bug 1568107: If the totalMs is greater than 1/60th second (ie. 1000/60 ms)
|
|
// then record, via telemetry, the percentage of time spent in each
|
|
// sub-system.
|
|
if (totalMs > 1000.0 / 60.0) {
|
|
auto record = [=](const nsCString& aKey, double aDurationMs) -> void {
|
|
MOZ_ASSERT(aDurationMs <= totalMs);
|
|
auto phasePercent = static_cast<uint32_t>(aDurationMs * 100.0 / totalMs);
|
|
Telemetry::Accumulate(Telemetry::REFRESH_DRIVER_TICK_PHASE_WEIGHT, aKey,
|
|
phasePercent);
|
|
};
|
|
|
|
record("Event"_ns, phaseMetrics[0]);
|
|
record("Style"_ns, phaseMetrics[1]);
|
|
record("Reflow"_ns, phaseMetrics[2]);
|
|
record("Display"_ns, phaseMetrics[3]);
|
|
record("Paint"_ns, phasePaint);
|
|
|
|
// Explicitly record the time unaccounted for.
|
|
double other = totalMs -
|
|
std::accumulate(phaseMetrics, ArrayEnd(phaseMetrics), 0.0) -
|
|
phasePaint;
|
|
record("Other"_ns, other);
|
|
}
|
|
|
|
if (mNotifyDOMContentFlushed) {
|
|
mNotifyDOMContentFlushed = false;
|
|
mPresContext->NotifyDOMContentFlushed();
|
|
}
|
|
|
|
for (nsAPostRefreshObserver* observer :
|
|
mPostRefreshObservers.ForwardRange()) {
|
|
observer->DidRefresh();
|
|
}
|
|
|
|
NS_ASSERTION(mInRefresh, "Still in refresh");
|
|
|
|
if (mPresContext->IsRoot() && XRE_IsContentProcess() &&
|
|
StaticPrefs::gfx_content_always_paint()) {
|
|
ScheduleViewManagerFlush();
|
|
}
|
|
|
|
if (dispatchTasksAfterTick && sPendingIdleTasks) {
|
|
UniquePtr<AutoTArray<RefPtr<Task>, 8>> tasks(sPendingIdleTasks.forget());
|
|
for (RefPtr<Task>& taskWithDelay : *tasks) {
|
|
TaskController::Get()->AddTask(taskWithDelay.forget());
|
|
}
|
|
}
|
|
}
|
|
|
|
void nsRefreshDriver::BeginRefreshingImages(RequestTable& aEntries,
|
|
mozilla::TimeStamp aDesired) {
|
|
for (const auto& req : aEntries) {
|
|
mRequests.Insert(req);
|
|
|
|
nsCOMPtr<imgIContainer> image;
|
|
if (NS_SUCCEEDED(req->GetImage(getter_AddRefs(image)))) {
|
|
image->SetAnimationStartTime(aDesired);
|
|
}
|
|
}
|
|
aEntries.Clear();
|
|
}
|
|
|
|
void nsRefreshDriver::Freeze() {
|
|
StopTimer();
|
|
mFreezeCount++;
|
|
}
|
|
|
|
void nsRefreshDriver::Thaw() {
|
|
NS_ASSERTION(mFreezeCount > 0, "Thaw() called on an unfrozen refresh driver");
|
|
|
|
if (mFreezeCount > 0) {
|
|
mFreezeCount--;
|
|
}
|
|
|
|
if (mFreezeCount == 0) {
|
|
if (HasObservers() || HasImageRequests()) {
|
|
// FIXME: This isn't quite right, since our EnsureTimerStarted call
|
|
// updates our mMostRecentRefresh, but the DoRefresh call won't run
|
|
// and notify our observers until we get back to the event loop.
|
|
// Thus MostRecentRefresh() will lie between now and the DoRefresh.
|
|
RefPtr<nsRunnableMethod<nsRefreshDriver>> event = NewRunnableMethod(
|
|
"nsRefreshDriver::DoRefresh", this, &nsRefreshDriver::DoRefresh);
|
|
nsPresContext* pc = GetPresContext();
|
|
if (pc) {
|
|
pc->Document()->Dispatch(TaskCategory::Other, event.forget());
|
|
EnsureTimerStarted();
|
|
} else {
|
|
NS_ERROR("Thawing while document is being destroyed");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void nsRefreshDriver::FinishedWaitingForTransaction() {
|
|
if (mSkippedPaints && !IsInRefresh() &&
|
|
(HasObservers() || HasImageRequests()) && CanDoCatchUpTick()) {
|
|
NS_DispatchToCurrentThreadQueue(
|
|
NS_NewRunnableFunction(
|
|
"nsRefreshDriver::FinishedWaitingForTransaction",
|
|
[self = RefPtr{this}]() {
|
|
if (self->CanDoCatchUpTick()) {
|
|
self->Tick(self->mActiveTimer->MostRecentRefreshVsyncId(),
|
|
self->mActiveTimer->MostRecentRefresh());
|
|
}
|
|
}),
|
|
EventQueuePriority::Vsync);
|
|
}
|
|
mWaitingForTransaction = false;
|
|
mSkippedPaints = false;
|
|
}
|
|
|
|
mozilla::layers::TransactionId nsRefreshDriver::GetTransactionId(
|
|
bool aThrottle) {
|
|
mNextTransactionId = mNextTransactionId.Next();
|
|
LOG("[%p] Allocating transaction id %" PRIu64, this, mNextTransactionId.mId);
|
|
|
|
// If this a paint from within a normal tick, and the caller hasn't explicitly
|
|
// asked for it to skip being throttled, then record this transaction as
|
|
// pending and maybe disable painting until some transactions are processed.
|
|
if (aThrottle && mInNormalTick) {
|
|
mPendingTransactions.AppendElement(mNextTransactionId);
|
|
if (TooManyPendingTransactions() && !mWaitingForTransaction &&
|
|
!mTestControllingRefreshes) {
|
|
LOG("[%p] Hit max pending transaction limit, entering wait mode", this);
|
|
mWaitingForTransaction = true;
|
|
mSkippedPaints = false;
|
|
}
|
|
}
|
|
|
|
return mNextTransactionId;
|
|
}
|
|
|
|
mozilla::layers::TransactionId nsRefreshDriver::LastTransactionId() const {
|
|
return mNextTransactionId;
|
|
}
|
|
|
|
void nsRefreshDriver::RevokeTransactionId(
|
|
mozilla::layers::TransactionId aTransactionId) {
|
|
MOZ_ASSERT(aTransactionId == mNextTransactionId);
|
|
LOG("[%p] Revoking transaction id %" PRIu64, this, aTransactionId.mId);
|
|
if (AtPendingTransactionLimit() &&
|
|
mPendingTransactions.Contains(aTransactionId) && mWaitingForTransaction) {
|
|
LOG("[%p] No longer over pending transaction limit, leaving wait state",
|
|
this);
|
|
MOZ_ASSERT(!mSkippedPaints,
|
|
"How did we skip a paint when we're in the middle of one?");
|
|
FinishedWaitingForTransaction();
|
|
}
|
|
|
|
// Notify the pres context so that it can deliver MozAfterPaint for this
|
|
// id if any caller was expecting it.
|
|
nsPresContext* pc = GetPresContext();
|
|
if (pc) {
|
|
pc->NotifyRevokingDidPaint(aTransactionId);
|
|
}
|
|
// Remove aTransactionId from the set of outstanding transactions since we're
|
|
// no longer waiting on it to be completed, but don't revert
|
|
// mNextTransactionId since we can't use the id again.
|
|
mPendingTransactions.RemoveElement(aTransactionId);
|
|
}
|
|
|
|
void nsRefreshDriver::ClearPendingTransactions() {
|
|
LOG("[%p] ClearPendingTransactions", this);
|
|
mPendingTransactions.Clear();
|
|
mWaitingForTransaction = false;
|
|
}
|
|
|
|
void nsRefreshDriver::ResetInitialTransactionId(
|
|
mozilla::layers::TransactionId aTransactionId) {
|
|
mNextTransactionId = aTransactionId;
|
|
}
|
|
|
|
mozilla::TimeStamp nsRefreshDriver::GetTransactionStart() { return mTickStart; }
|
|
|
|
VsyncId nsRefreshDriver::GetVsyncId() { return mTickVsyncId; }
|
|
|
|
mozilla::TimeStamp nsRefreshDriver::GetVsyncStart() { return mTickVsyncTime; }
|
|
|
|
void nsRefreshDriver::NotifyTransactionCompleted(
|
|
mozilla::layers::TransactionId aTransactionId) {
|
|
LOG("[%p] Completed transaction id %" PRIu64, this, aTransactionId.mId);
|
|
mPendingTransactions.RemoveElement(aTransactionId);
|
|
if (mWaitingForTransaction && !TooManyPendingTransactions()) {
|
|
LOG("[%p] No longer over pending transaction limit, leaving wait state",
|
|
this);
|
|
FinishedWaitingForTransaction();
|
|
}
|
|
}
|
|
|
|
void nsRefreshDriver::WillRefresh(mozilla::TimeStamp aTime) {
|
|
mRootRefresh->RemoveRefreshObserver(this, FlushType::Style);
|
|
mRootRefresh = nullptr;
|
|
if (mSkippedPaints) {
|
|
DoRefresh();
|
|
}
|
|
}
|
|
|
|
bool nsRefreshDriver::IsWaitingForPaint(mozilla::TimeStamp aTime) {
|
|
if (mTestControllingRefreshes) {
|
|
return false;
|
|
}
|
|
|
|
if (mWaitingForTransaction) {
|
|
LOG("[%p] Over max pending transaction limit when trying to paint, "
|
|
"skipping",
|
|
this);
|
|
mSkippedPaints = true;
|
|
return true;
|
|
}
|
|
|
|
// Try find the 'root' refresh driver for the current window and check
|
|
// if that is waiting for a paint.
|
|
nsPresContext* pc = GetPresContext();
|
|
nsPresContext* rootContext = pc ? pc->GetRootPresContext() : nullptr;
|
|
if (rootContext) {
|
|
nsRefreshDriver* rootRefresh = rootContext->RefreshDriver();
|
|
if (rootRefresh && rootRefresh != this) {
|
|
if (rootRefresh->IsWaitingForPaint(aTime)) {
|
|
if (mRootRefresh != rootRefresh) {
|
|
if (mRootRefresh) {
|
|
mRootRefresh->RemoveRefreshObserver(this, FlushType::Style);
|
|
}
|
|
rootRefresh->AddRefreshObserver(this, FlushType::Style,
|
|
"Waiting for paint");
|
|
mRootRefresh = rootRefresh;
|
|
}
|
|
mSkippedPaints = true;
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void nsRefreshDriver::SetActivity(bool aIsActive, bool aIsInActiveTab) {
|
|
if (mIsActive == aIsActive && mIsInActiveTab == aIsInActiveTab) {
|
|
return;
|
|
}
|
|
mIsActive = aIsActive;
|
|
mIsInActiveTab = aIsInActiveTab;
|
|
|
|
// For iframes which are in the active tab but hidden, grant them a grace
|
|
// period of 1s of activity so that they can get set up.
|
|
if (!mHasGrantedActivityGracePeriod && !mIsActive && mIsInActiveTab &&
|
|
mPresContext && !mPresContext->IsRootContentDocumentCrossProcess()) {
|
|
mHasGrantedActivityGracePeriod = true;
|
|
mIsGrantingActivityGracePeriod =
|
|
StaticPrefs::layout_oopif_activity_grace_period_ms() > 0;
|
|
if (mIsGrantingActivityGracePeriod) {
|
|
mActivityGracePeriodStart = TimeStamp::Now();
|
|
}
|
|
}
|
|
|
|
UpdateThrottledState();
|
|
}
|
|
|
|
void nsRefreshDriver::UpdateThrottledState() {
|
|
const bool shouldThrottle = ComputeShouldBeThrottled();
|
|
if (mThrottled == shouldThrottle) {
|
|
return;
|
|
}
|
|
mThrottled = shouldThrottle;
|
|
if (mActiveTimer) {
|
|
// We want to switch our timer type here, so just stop and
|
|
// restart the timer.
|
|
EnsureTimerStarted(eForceAdjustTimer);
|
|
}
|
|
}
|
|
|
|
nsPresContext* nsRefreshDriver::GetPresContext() const { return mPresContext; }
|
|
|
|
void nsRefreshDriver::DoRefresh() {
|
|
// Don't do a refresh unless we're in a state where we should be refreshing.
|
|
if (!IsFrozen() && mPresContext && mActiveTimer) {
|
|
DoTick();
|
|
}
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
bool nsRefreshDriver::IsRefreshObserver(nsARefreshObserver* aObserver,
|
|
FlushType aFlushType) {
|
|
ObserverArray& array = ArrayFor(aFlushType);
|
|
return array.Contains(aObserver);
|
|
}
|
|
#endif
|
|
|
|
void nsRefreshDriver::ScheduleViewManagerFlush() {
|
|
NS_ASSERTION(mPresContext && mPresContext->IsRoot(),
|
|
"Should only schedule view manager flush on root prescontexts");
|
|
mViewManagerFlushIsPending = true;
|
|
if (!mViewManagerFlushCause) {
|
|
mViewManagerFlushCause = profiler_capture_backtrace();
|
|
}
|
|
mHasScheduleFlush = true;
|
|
EnsureTimerStarted(eNeverAdjustTimer);
|
|
}
|
|
|
|
void nsRefreshDriver::ScheduleFrameRequestCallbacks(Document* aDocument) {
|
|
NS_ASSERTION(mFrameRequestCallbackDocs.IndexOf(aDocument) ==
|
|
mFrameRequestCallbackDocs.NoIndex &&
|
|
mThrottledFrameRequestCallbackDocs.IndexOf(aDocument) ==
|
|
mThrottledFrameRequestCallbackDocs.NoIndex,
|
|
"Don't schedule the same document multiple times");
|
|
if (aDocument->ShouldThrottleFrameRequests()) {
|
|
mThrottledFrameRequestCallbackDocs.AppendElement(aDocument);
|
|
} else {
|
|
mFrameRequestCallbackDocs.AppendElement(aDocument);
|
|
}
|
|
|
|
// make sure that the timer is running
|
|
EnsureTimerStarted();
|
|
}
|
|
|
|
void nsRefreshDriver::RevokeFrameRequestCallbacks(Document* aDocument) {
|
|
mFrameRequestCallbackDocs.RemoveElement(aDocument);
|
|
mThrottledFrameRequestCallbackDocs.RemoveElement(aDocument);
|
|
// No need to worry about restarting our timer in slack mode if it's already
|
|
// running; that will happen automatically when it fires.
|
|
}
|
|
|
|
void nsRefreshDriver::ScheduleFullscreenEvent(
|
|
UniquePtr<PendingFullscreenEvent> aEvent) {
|
|
mPendingFullscreenEvents.AppendElement(std::move(aEvent));
|
|
// make sure that the timer is running
|
|
EnsureTimerStarted();
|
|
}
|
|
|
|
void nsRefreshDriver::CancelPendingFullscreenEvents(Document* aDocument) {
|
|
for (auto i : Reversed(IntegerRange(mPendingFullscreenEvents.Length()))) {
|
|
if (mPendingFullscreenEvents[i]->Document() == aDocument) {
|
|
mPendingFullscreenEvents.RemoveElementAt(i);
|
|
}
|
|
}
|
|
}
|
|
|
|
void nsRefreshDriver::CancelPendingAnimationEvents(
|
|
AnimationEventDispatcher* aDispatcher) {
|
|
MOZ_ASSERT(aDispatcher);
|
|
aDispatcher->ClearEventQueue();
|
|
mAnimationEventFlushObservers.RemoveElement(aDispatcher);
|
|
}
|
|
|
|
/* static */
|
|
TimeStamp nsRefreshDriver::GetIdleDeadlineHint(TimeStamp aDefault,
|
|
IdleCheck aCheckType) {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
MOZ_ASSERT(!aDefault.IsNull());
|
|
|
|
// For computing idleness of refresh drivers we only care about
|
|
// sRegularRateTimerList, since we consider refresh drivers attached to
|
|
// sThrottledRateTimer to be inactive. This implies that tasks
|
|
// resulting from a tick on the sRegularRateTimer counts as being
|
|
// busy but tasks resulting from a tick on sThrottledRateTimer
|
|
// counts as being idle.
|
|
if (sRegularRateTimer) {
|
|
TimeStamp retVal = sRegularRateTimer->GetIdleDeadlineHint(aDefault);
|
|
if (retVal != aDefault) {
|
|
return retVal;
|
|
}
|
|
}
|
|
|
|
TimeStamp hint = TimeStamp();
|
|
if (sRegularRateTimerList) {
|
|
for (RefreshDriverTimer* timer : *sRegularRateTimerList) {
|
|
TimeStamp newHint = timer->GetIdleDeadlineHint(aDefault);
|
|
if (newHint < aDefault && (hint.IsNull() || newHint < hint)) {
|
|
hint = newHint;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!hint.IsNull()) {
|
|
return hint;
|
|
}
|
|
|
|
if (aCheckType == IdleCheck::AllVsyncListeners && XRE_IsParentProcess()) {
|
|
Maybe<TimeDuration> maybeRate =
|
|
mozilla::gfx::VsyncSource::GetFastestVsyncRate();
|
|
if (maybeRate.isSome()) {
|
|
TimeDuration minIdlePeriod =
|
|
TimeDuration::FromMilliseconds(StaticPrefs::idle_period_min());
|
|
TimeDuration layoutIdleLimit = TimeDuration::FromMilliseconds(
|
|
StaticPrefs::layout_idle_period_time_limit());
|
|
TimeDuration rate = *maybeRate - layoutIdleLimit;
|
|
|
|
// If the rate is very short, don't let it affect idle processing in the
|
|
// parent process too much.
|
|
rate = std::max(rate, minIdlePeriod + minIdlePeriod);
|
|
|
|
TimeStamp newHint = TimeStamp::Now() + rate;
|
|
if (newHint < aDefault) {
|
|
return newHint;
|
|
}
|
|
}
|
|
}
|
|
|
|
return aDefault;
|
|
}
|
|
|
|
/* static */
|
|
Maybe<TimeStamp> nsRefreshDriver::GetNextTickHint() {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
if (sRegularRateTimer) {
|
|
return sRegularRateTimer->GetNextTickHint();
|
|
}
|
|
|
|
Maybe<TimeStamp> hint = Nothing();
|
|
if (sRegularRateTimerList) {
|
|
for (RefreshDriverTimer* timer : *sRegularRateTimerList) {
|
|
if (Maybe<TimeStamp> newHint = timer->GetNextTickHint()) {
|
|
if (!hint || newHint.value() < hint.value()) {
|
|
hint = newHint;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return hint;
|
|
}
|
|
|
|
/* static */
|
|
bool nsRefreshDriver::IsRegularRateTimerTicking() {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
if (sRegularRateTimer) {
|
|
if (sRegularRateTimer->IsTicking()) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
if (sRegularRateTimerList) {
|
|
for (RefreshDriverTimer* timer : *sRegularRateTimerList) {
|
|
if (timer->IsTicking()) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void nsRefreshDriver::Disconnect() {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
StopTimer();
|
|
|
|
mEarlyRunners.Clear();
|
|
|
|
if (mPresContext) {
|
|
mPresContext = nullptr;
|
|
if (--sRefreshDriverCount == 0) {
|
|
Shutdown();
|
|
}
|
|
}
|
|
}
|
|
|
|
#undef LOG
|