mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
a8682cf4b0
This patch causes transition events to be dispatched as a separate step after sampling the transitions. Eventually this will allow us to sample transitions from their timeline (independently of where they came from and in potentially any order) by separating the concepts of sampling and event dispatch.
2223 lines
69 KiB
C++
2223 lines
69 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set shiftwidth=2 tabstop=8 autoindent cindent expandtab: */
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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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#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/ArrayUtils.h"
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#include "mozilla/AutoRestore.h"
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#include "mozilla/IntegerRange.h"
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#include "nsHostObjectProtocolHandler.h"
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#include "nsRefreshDriver.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 "nsAutoPtr.h"
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#include "nsIDocument.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/Preferences.h"
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#include "nsViewManager.h"
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#include "GeckoProfiler.h"
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#include "nsNPAPIPluginInstance.h"
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#include "nsPerformance.h"
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#include "mozilla/dom/WindowBinding.h"
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#include "RestyleManager.h"
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#include "Layers.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/Telemetry.h"
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#include "gfxPrefs.h"
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#include "BackgroundChild.h"
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#include "mozilla/ipc/PBackgroundChild.h"
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#include "nsIIPCBackgroundChildCreateCallback.h"
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#include "mozilla/layout/VsyncChild.h"
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#include "VsyncSource.h"
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#include "mozilla/VsyncDispatcher.h"
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#include "nsThreadUtils.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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#ifdef MOZ_NUWA_PROCESS
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#include "ipc/Nuwa.h"
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#endif
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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::layout;
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static PRLogModuleInfo *gLog = nullptr;
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#define LOG(...) MOZ_LOG(gLog, mozilla::LogLevel::Debug, (__VA_ARGS__))
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#define DEFAULT_FRAME_RATE 60
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#define DEFAULT_THROTTLED_FRAME_RATE 1
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#define DEFAULT_RECOMPUTE_VISIBILITY_INTERVAL_MS 1000
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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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namespace mozilla {
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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()
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: mLastFireEpoch(0)
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{
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}
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virtual ~RefreshDriverTimer()
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{
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NS_ASSERTION(mRefreshDrivers.Length() == 0, "Should have removed all refresh drivers from here by now!");
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}
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virtual void AddRefreshDriver(nsRefreshDriver* aDriver)
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{
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LOG("[%p] AddRefreshDriver %p", this, aDriver);
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NS_ASSERTION(!mRefreshDrivers.Contains(aDriver), "AddRefreshDriver for a refresh driver that's already in the list!");
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mRefreshDrivers.AppendElement(aDriver);
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if (mRefreshDrivers.Length() == 1) {
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StartTimer();
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}
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}
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virtual void RemoveRefreshDriver(nsRefreshDriver* aDriver)
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{
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LOG("[%p] RemoveRefreshDriver %p", this, aDriver);
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NS_ASSERTION(mRefreshDrivers.Contains(aDriver), "RemoveRefreshDriver for a refresh driver that's not in the list!");
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mRefreshDrivers.RemoveElement(aDriver);
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if (mRefreshDrivers.Length() == 0) {
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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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int64_t MostRecentRefreshEpochTime() const { return mLastFireEpoch; }
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void SwapRefreshDrivers(RefreshDriverTimer* aNewTimer)
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{
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MOZ_ASSERT(NS_IsMainThread());
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for (nsRefreshDriver* driver : mRefreshDrivers) {
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aNewTimer->AddRefreshDriver(driver);
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driver->mActiveTimer = aNewTimer;
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}
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mRefreshDrivers.Clear();
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aNewTimer->mLastFireEpoch = mLastFireEpoch;
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aNewTimer->mLastFireTime = mLastFireTime;
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}
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protected:
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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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/*
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* Actually runs a tick, poking all the attached RefreshDrivers.
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* Grabs the "now" time via JS_Now and TimeStamp::Now().
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*/
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void Tick()
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{
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int64_t jsnow = JS_Now();
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TimeStamp now = TimeStamp::Now();
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Tick(jsnow, now);
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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(int64_t jsnow, TimeStamp now)
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{
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ScheduleNextTick(now);
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mLastFireEpoch = jsnow;
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mLastFireTime = now;
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LOG("[%p] ticking drivers...", this);
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nsTArray<nsRefPtr<nsRefreshDriver> > drivers(mRefreshDrivers);
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// RD is short for RefreshDriver
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profiler_tracing("Paint", "RD", TRACING_INTERVAL_START);
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for (nsRefreshDriver* driver : drivers) {
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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, jsnow, now);
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}
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profiler_tracing("Paint", "RD", TRACING_INTERVAL_END);
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LOG("[%p] done.", this);
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}
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static void TickDriver(nsRefreshDriver* driver, int64_t jsnow, TimeStamp now)
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{
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LOG(">> TickDriver: %p (jsnow: %lld)", driver, jsnow);
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driver->Tick(jsnow, now);
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}
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int64_t mLastFireEpoch;
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TimeStamp mLastFireTime;
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TimeStamp mTargetTime;
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nsTArray<nsRefPtr<nsRefreshDriver> > mRefreshDrivers;
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// useful callback for nsITimer-based derived classes, here
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// bacause of c++ protected shenanigans
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static void TimerTick(nsITimer* aTimer, void* aClosure)
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{
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RefreshDriverTimer *timer = 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 :
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public RefreshDriverTimer
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{
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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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{
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SetRate(aRate);
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mTimer = do_CreateInstance(NS_TIMER_CONTRACTID);
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}
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virtual ~SimpleTimerBasedRefreshDriverTimer()
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{
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StopTimer();
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}
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// will take effect at next timer tick
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virtual void SetRate(double aNewRate)
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{
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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
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{
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return mRateMilliseconds;
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}
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protected:
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virtual void StartTimer()
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{
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// pretend we just fired, and we schedule the next tick normally
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mLastFireEpoch = JS_Now();
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mLastFireTime = TimeStamp::Now();
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mTargetTime = mLastFireTime + mRateDuration;
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uint32_t delay = static_cast<uint32_t>(mRateMilliseconds);
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mTimer->InitWithFuncCallback(TimerTick, this, delay, nsITimer::TYPE_ONE_SHOT);
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}
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virtual void StopTimer()
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{
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mTimer->Cancel();
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}
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double mRateMilliseconds;
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TimeDuration mRateDuration;
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nsRefPtr<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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{
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public:
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VsyncRefreshDriverTimer()
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: mVsyncChild(nullptr)
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{
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MOZ_ASSERT(XRE_IsParentProcess());
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MOZ_ASSERT(NS_IsMainThread());
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mVsyncObserver = new RefreshDriverVsyncObserver(this);
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nsRefPtr<mozilla::gfx::VsyncSource> vsyncSource = gfxPlatform::GetPlatform()->GetHardwareVsync();
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MOZ_ALWAYS_TRUE(mVsyncDispatcher = vsyncSource->GetRefreshTimerVsyncDispatcher());
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mVsyncDispatcher->SetParentRefreshTimer(mVsyncObserver);
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}
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explicit VsyncRefreshDriverTimer(VsyncChild* aVsyncChild)
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: mVsyncChild(aVsyncChild)
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{
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MOZ_ASSERT(!XRE_IsParentProcess());
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MOZ_ASSERT(NS_IsMainThread());
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MOZ_ASSERT(mVsyncChild);
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mVsyncObserver = new RefreshDriverVsyncObserver(this);
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mVsyncChild->SetVsyncObserver(mVsyncObserver);
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}
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private:
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// Since VsyncObservers are refCounted, but the RefreshDriverTimer are
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// explicitly shutdown. We create an inner class that has the VsyncObserver
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// and is shutdown when the RefreshDriverTimer is deleted. The alternative is
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// to (a) make all RefreshDriverTimer RefCounted or (b) use different
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// VsyncObserver types.
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class RefreshDriverVsyncObserver final : public VsyncObserver
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{
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public:
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explicit RefreshDriverVsyncObserver(VsyncRefreshDriverTimer* aVsyncRefreshDriverTimer)
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: mVsyncRefreshDriverTimer(aVsyncRefreshDriverTimer)
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, mRefreshTickLock("RefreshTickLock")
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, mProcessedVsync(true)
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{
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MOZ_ASSERT(NS_IsMainThread());
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}
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virtual bool NotifyVsync(TimeStamp aVsyncTimestamp) override
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{
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if (!NS_IsMainThread()) {
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MOZ_ASSERT(XRE_IsParentProcess());
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// Compress vsync notifications such that only 1 may run at a time
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// This is so that we don't flood the refresh driver with vsync messages
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// if the main thread is blocked for long periods of time
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{ // scope lock
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MonitorAutoLock lock(mRefreshTickLock);
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mRecentVsync = aVsyncTimestamp;
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if (!mProcessedVsync) {
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return true;
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}
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mProcessedVsync = false;
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}
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nsCOMPtr<nsIRunnable> vsyncEvent =
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NS_NewRunnableMethodWithArg<TimeStamp>(this,
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&RefreshDriverVsyncObserver::TickRefreshDriver,
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aVsyncTimestamp);
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NS_DispatchToMainThread(vsyncEvent);
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} else {
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TickRefreshDriver(aVsyncTimestamp);
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}
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return true;
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}
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void Shutdown()
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{
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MOZ_ASSERT(NS_IsMainThread());
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mVsyncRefreshDriverTimer = nullptr;
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}
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private:
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virtual ~RefreshDriverVsyncObserver() {}
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void TickRefreshDriver(TimeStamp aVsyncTimestamp)
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{
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MOZ_ASSERT(NS_IsMainThread());
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if (XRE_IsParentProcess()) {
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MonitorAutoLock lock(mRefreshTickLock);
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aVsyncTimestamp = mRecentVsync;
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mProcessedVsync = true;
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}
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// We might have a problem that we call ~VsyncRefreshDriverTimer() before
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// the scheduled TickRefreshDriver() runs. Check mVsyncRefreshDriverTimer
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// before use.
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if (mVsyncRefreshDriverTimer) {
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mVsyncRefreshDriverTimer->RunRefreshDrivers(aVsyncTimestamp);
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}
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}
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// VsyncRefreshDriverTimer holds this RefreshDriverVsyncObserver and it will
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// be always available before Shutdown(). We can just use the raw pointer
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// here.
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VsyncRefreshDriverTimer* mVsyncRefreshDriverTimer;
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Monitor mRefreshTickLock;
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TimeStamp mRecentVsync;
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bool mProcessedVsync;
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}; // RefreshDriverVsyncObserver
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virtual ~VsyncRefreshDriverTimer()
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{
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if (XRE_IsParentProcess()) {
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mVsyncDispatcher->SetParentRefreshTimer(nullptr);
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mVsyncDispatcher = nullptr;
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} else {
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// Since the PVsyncChild actors live through the life of the process, just
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// send the unobserveVsync message to disable vsync event. We don't need
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// to handle the cleanup stuff of this actor. PVsyncChild::ActorDestroy()
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// will be called and clean up this actor.
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unused << mVsyncChild->SendUnobserve();
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mVsyncChild->SetVsyncObserver(nullptr);
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mVsyncChild = nullptr;
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}
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// Detach current vsync timer from this VsyncObserver. The observer will no
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// longer tick this timer.
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mVsyncObserver->Shutdown();
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mVsyncObserver = nullptr;
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}
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virtual void StartTimer() override
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{
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mLastFireEpoch = JS_Now();
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mLastFireTime = TimeStamp::Now();
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if (XRE_IsParentProcess()) {
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mVsyncDispatcher->SetParentRefreshTimer(mVsyncObserver);
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} else {
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unused << mVsyncChild->SendObserve();
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}
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}
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virtual void StopTimer() override
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{
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if (XRE_IsParentProcess()) {
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mVsyncDispatcher->SetParentRefreshTimer(nullptr);
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} else {
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unused << mVsyncChild->SendUnobserve();
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}
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}
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virtual void ScheduleNextTick(TimeStamp aNowTime) override
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{
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// Do nothing since we just wait for the next vsync from
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// RefreshDriverVsyncObserver.
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}
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void RunRefreshDrivers(TimeStamp aTimeStamp)
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{
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int64_t jsnow = JS_Now();
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TimeDuration diff = TimeStamp::Now() - aTimeStamp;
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int64_t vsyncJsNow = jsnow - diff.ToMicroseconds();
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Tick(vsyncJsNow, aTimeStamp);
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}
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nsRefPtr<RefreshDriverVsyncObserver> mVsyncObserver;
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// Used for parent process.
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nsRefPtr<RefreshTimerVsyncDispatcher> mVsyncDispatcher;
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// Used for child process.
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// The mVsyncChild will be always available before VsncChild::ActorDestroy().
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// After ActorDestroy(), StartTimer() and StopTimer() calls will be non-op.
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nsRefPtr<VsyncChild> mVsyncChild;
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}; // VsyncRefreshDriverTimer
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/*
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* PreciseRefreshDriverTimer schedules ticks based on the current time
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* and when the next tick -should- be sent if we were hitting our
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* rate. It always schedules ticks on multiples of aRate -- meaning that
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* if some execution takes longer than an alloted slot, the next tick
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* will be delayed instead of triggering instantly. This might not be
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* desired -- there's an #if 0'd block below that we could put behind
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* a pref to control this behaviour.
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*/
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class PreciseRefreshDriverTimer :
|
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public SimpleTimerBasedRefreshDriverTimer
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{
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public:
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explicit PreciseRefreshDriverTimer(double aRate)
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: SimpleTimerBasedRefreshDriverTimer(aRate)
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{
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}
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protected:
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virtual void ScheduleNextTick(TimeStamp aNowTime)
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{
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// The number of (whole) elapsed intervals between the last target
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// time and the actual time. We want to truncate the double down
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// to an int number of intervals.
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int numElapsedIntervals = static_cast<int>((aNowTime - mTargetTime) / mRateDuration);
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if (numElapsedIntervals < 0) {
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// It's possible that numElapsedIntervals is negative (e.g. timer compensation
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// may result in (aNowTime - mTargetTime) < -1.0/mRateDuration, which will result in
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// negative numElapsedIntervals), so make sure we don't target the same timestamp.
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numElapsedIntervals = 0;
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}
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// the last "tick" that may or may not have been actually sent was
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// at this time. For example, if the rate is 15ms, the target
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// time is 200ms, and it's now 225ms, the last effective tick
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// would have been at 215ms. The next one should then be
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// scheduled for 5 ms from now.
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//
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// We then add another mRateDuration to find the next tick target.
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TimeStamp newTarget = mTargetTime + mRateDuration * (numElapsedIntervals + 1);
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// the amount of (integer) ms until the next time we should tick
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uint32_t delay = static_cast<uint32_t>((newTarget - aNowTime).ToMilliseconds());
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// Without this block, we'll always schedule on interval ticks;
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// with it, we'll schedule immediately if we missed our tick target
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// last time.
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#if 0
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if (numElapsedIntervals > 0) {
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// we're late, so reset
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newTarget = aNowTime;
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delay = 0;
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}
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#endif
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// log info & lateness
|
|
LOG("[%p] precise timer last tick late by %f ms, next tick in %d ms",
|
|
this,
|
|
(aNowTime - mTargetTime).ToMilliseconds(),
|
|
delay);
|
|
#ifndef ANDROID /* bug 1142079 */
|
|
Telemetry::Accumulate(Telemetry::FX_REFRESH_DRIVER_FRAME_DELAY_MS, (aNowTime - mTargetTime).ToMilliseconds());
|
|
#endif
|
|
|
|
// then schedule the timer
|
|
LOG("[%p] scheduling callback for %d ms (2)", this, delay);
|
|
mTimer->InitWithFuncCallback(TimerTick, this, delay, nsITimer::TYPE_ONE_SHOT);
|
|
|
|
mTargetTime = newTarget;
|
|
}
|
|
};
|
|
|
|
#ifdef XP_WIN
|
|
/*
|
|
* Uses vsync timing on windows with DWM. Falls back dynamically to fixed rate if required.
|
|
*/
|
|
class PreciseRefreshDriverTimerWindowsDwmVsync :
|
|
public PreciseRefreshDriverTimer
|
|
{
|
|
public:
|
|
// Checks if the vsync API is accessible.
|
|
static bool IsSupported()
|
|
{
|
|
return WinUtils::dwmGetCompositionTimingInfoPtr != nullptr;
|
|
}
|
|
|
|
PreciseRefreshDriverTimerWindowsDwmVsync(double aRate, bool aPreferHwTiming = false)
|
|
: PreciseRefreshDriverTimer(aRate)
|
|
, mPreferHwTiming(aPreferHwTiming)
|
|
{
|
|
}
|
|
|
|
protected:
|
|
// Indicates we should try to adjust to the HW's timing (get rate from the OS or use vsync)
|
|
// This is typically true if the default refresh-rate value was not modified by the user.
|
|
bool mPreferHwTiming;
|
|
|
|
nsresult GetVBlankInfo(mozilla::TimeStamp &aLastVBlank, mozilla::TimeDuration &aInterval)
|
|
{
|
|
MOZ_ASSERT(WinUtils::dwmGetCompositionTimingInfoPtr,
|
|
"DwmGetCompositionTimingInfoPtr is unavailable (windows vsync)");
|
|
|
|
DWM_TIMING_INFO timingInfo;
|
|
timingInfo.cbSize = sizeof(DWM_TIMING_INFO);
|
|
HRESULT hr = WinUtils::dwmGetCompositionTimingInfoPtr(0, &timingInfo); // For the desktop window instead of a specific one.
|
|
|
|
if (FAILED(hr)) {
|
|
// This happens first time this is called.
|
|
return NS_ERROR_NOT_INITIALIZED;
|
|
}
|
|
|
|
LARGE_INTEGER time, freq;
|
|
::QueryPerformanceCounter(&time);
|
|
::QueryPerformanceFrequency(&freq);
|
|
aLastVBlank = TimeStamp::Now();
|
|
double secondsPassed = double(time.QuadPart - timingInfo.qpcVBlank) / double(freq.QuadPart);
|
|
|
|
aLastVBlank -= TimeDuration::FromSeconds(secondsPassed);
|
|
aInterval = TimeDuration::FromSeconds(double(timingInfo.qpcRefreshPeriod) / double(freq.QuadPart));
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
virtual void ScheduleNextTick(TimeStamp aNowTime)
|
|
{
|
|
static const TimeDuration kMinSaneInterval = TimeDuration::FromMilliseconds(3); // 330Hz
|
|
static const TimeDuration kMaxSaneInterval = TimeDuration::FromMilliseconds(44); // 23Hz
|
|
static const TimeDuration kNegativeMaxSaneInterval = TimeDuration::FromMilliseconds(-44); // Saves conversions for abs interval
|
|
TimeStamp lastVblank;
|
|
TimeDuration vblankInterval;
|
|
|
|
if (!mPreferHwTiming ||
|
|
NS_OK != GetVBlankInfo(lastVblank, vblankInterval) ||
|
|
vblankInterval > kMaxSaneInterval ||
|
|
vblankInterval < kMinSaneInterval ||
|
|
(aNowTime - lastVblank) > kMaxSaneInterval ||
|
|
(aNowTime - lastVblank) < kNegativeMaxSaneInterval) {
|
|
// Use the default timing without vsync
|
|
PreciseRefreshDriverTimer::ScheduleNextTick(aNowTime);
|
|
return;
|
|
}
|
|
|
|
TimeStamp newTarget = lastVblank + vblankInterval; // Base target
|
|
|
|
// However, timer callback might return early (or late, but that wouldn't bother us), and vblankInterval
|
|
// appears to be slightly (~1%) different on each call (probably the OS measuring recent actual interval[s])
|
|
// and since we don't want to re-target the same vsync, we keep advancing in vblank intervals until we find the
|
|
// next safe target (next vsync, but not within 10% interval of previous target).
|
|
// This is typically 0 or 1 iteration:
|
|
// If we're too early, next vsync would be the one we've already targeted (1 iteration).
|
|
// If the timer returned late, no iteration will be required.
|
|
|
|
const double kSameVsyncThreshold = 0.1;
|
|
while (newTarget <= mTargetTime + vblankInterval.MultDouble(kSameVsyncThreshold)) {
|
|
newTarget += vblankInterval;
|
|
}
|
|
|
|
// To make sure we always hit the same "side" of the signal:
|
|
// round the delay up (by adding 1, since we later floor) and add a little (10% by default).
|
|
// Note that newTarget doesn't change (and is the next vblank) as a reference when we're back.
|
|
static const double kDefaultPhaseShiftPercent = 10;
|
|
static const double phaseShiftFactor = 0.01 *
|
|
(Preferences::GetInt("layout.frame_rate.vsync.phasePercentage", kDefaultPhaseShiftPercent) % 100);
|
|
|
|
double phaseDelay = 1.0 + vblankInterval.ToMilliseconds() * phaseShiftFactor;
|
|
|
|
// ms until the next time we should tick
|
|
double delayMs = (newTarget - aNowTime).ToMilliseconds() + phaseDelay;
|
|
|
|
// Make sure the delay is never negative.
|
|
uint32_t delay = static_cast<uint32_t>(delayMs < 0 ? 0 : delayMs);
|
|
|
|
// log info & lateness
|
|
LOG("[%p] precise dwm-vsync timer last tick late by %f ms, next tick in %d ms",
|
|
this,
|
|
(aNowTime - mTargetTime).ToMilliseconds(),
|
|
delay);
|
|
#ifndef ANDROID /* bug 1142079 */
|
|
Telemetry::Accumulate(Telemetry::FX_REFRESH_DRIVER_FRAME_DELAY_MS, (aNowTime - mTargetTime).ToMilliseconds());
|
|
#endif
|
|
|
|
// then schedule the timer
|
|
LOG("[%p] scheduling callback for %d ms (2)", this, delay);
|
|
mTimer->InitWithFuncCallback(TimerTick, this, delay, nsITimer::TYPE_ONE_SHOT);
|
|
|
|
mTargetTime = newTarget;
|
|
}
|
|
};
|
|
#endif
|
|
|
|
/*
|
|
* 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)
|
|
{
|
|
}
|
|
|
|
virtual void AddRefreshDriver(nsRefreshDriver* aDriver)
|
|
{
|
|
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 = mRefreshDrivers.Length() - 1;
|
|
|
|
StopTimer();
|
|
StartTimer();
|
|
}
|
|
|
|
protected:
|
|
virtual void StartTimer()
|
|
{
|
|
mLastFireEpoch = JS_Now();
|
|
mLastFireTime = TimeStamp::Now();
|
|
|
|
mTargetTime = mLastFireTime + mRateDuration;
|
|
|
|
uint32_t delay = static_cast<uint32_t>(mRateMilliseconds);
|
|
mTimer->InitWithFuncCallback(TimerTickOne, this, delay, nsITimer::TYPE_ONE_SHOT);
|
|
}
|
|
|
|
virtual void StopTimer()
|
|
{
|
|
mTimer->Cancel();
|
|
}
|
|
|
|
virtual void ScheduleNextTick(TimeStamp aNowTime)
|
|
{
|
|
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 >= mRefreshDrivers.Length()) {
|
|
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->InitWithFuncCallback(TimerTickOne, this, delay, nsITimer::TYPE_ONE_SHOT);
|
|
|
|
LOG("[%p] inactive timer next tick in %f ms [index %d/%d]", this, mNextTickDuration,
|
|
mNextDriverIndex, mRefreshDrivers.Length());
|
|
}
|
|
|
|
/* Runs just one driver's tick. */
|
|
void TickOne()
|
|
{
|
|
int64_t jsnow = JS_Now();
|
|
TimeStamp now = TimeStamp::Now();
|
|
|
|
ScheduleNextTick(now);
|
|
|
|
mLastFireEpoch = jsnow;
|
|
mLastFireTime = now;
|
|
|
|
nsTArray<nsRefPtr<nsRefreshDriver> > drivers(mRefreshDrivers);
|
|
if (mNextDriverIndex < drivers.Length() &&
|
|
!drivers[mNextDriverIndex]->IsTestControllingRefreshesEnabled())
|
|
{
|
|
TickDriver(drivers[mNextDriverIndex], jsnow, now);
|
|
}
|
|
|
|
mNextDriverIndex++;
|
|
}
|
|
|
|
static void TimerTickOne(nsITimer* aTimer, void* aClosure)
|
|
{
|
|
InactiveRefreshDriverTimer *timer = static_cast<InactiveRefreshDriverTimer*>(aClosure);
|
|
timer->TickOne();
|
|
}
|
|
|
|
double mNextTickDuration;
|
|
double mDisableAfterMilliseconds;
|
|
uint32_t mNextDriverIndex;
|
|
};
|
|
|
|
// The PBackground protocol connection callback. It will be called when
|
|
// PBackground is ready. Then we create the PVsync sub-protocol for our
|
|
// vsync-base RefreshTimer.
|
|
class VsyncChildCreateCallback final : public nsIIPCBackgroundChildCreateCallback
|
|
{
|
|
NS_DECL_ISUPPORTS
|
|
|
|
public:
|
|
VsyncChildCreateCallback()
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
}
|
|
|
|
static void CreateVsyncActor(PBackgroundChild* aPBackgroundChild)
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
MOZ_ASSERT(aPBackgroundChild);
|
|
|
|
layout::PVsyncChild* actor = aPBackgroundChild->SendPVsyncConstructor();
|
|
layout::VsyncChild* child = static_cast<layout::VsyncChild*>(actor);
|
|
nsRefreshDriver::PVsyncActorCreated(child);
|
|
}
|
|
|
|
private:
|
|
virtual ~VsyncChildCreateCallback() {}
|
|
|
|
virtual void ActorCreated(PBackgroundChild* aPBackgroundChild) override
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
MOZ_ASSERT(aPBackgroundChild);
|
|
CreateVsyncActor(aPBackgroundChild);
|
|
}
|
|
|
|
virtual void ActorFailed() override
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
MOZ_CRASH("Failed To Create VsyncChild Actor");
|
|
}
|
|
}; // VsyncChildCreateCallback
|
|
NS_IMPL_ISUPPORTS(VsyncChildCreateCallback, nsIIPCBackgroundChildCreateCallback)
|
|
|
|
} // namespace mozilla
|
|
|
|
static RefreshDriverTimer* sRegularRateTimer;
|
|
static InactiveRefreshDriverTimer* sThrottledRateTimer;
|
|
|
|
#ifdef XP_WIN
|
|
static int32_t sHighPrecisionTimerRequests = 0;
|
|
// a bare pointer to avoid introducing a static constructor
|
|
static nsITimer *sDisableHighPrecisionTimersTimer = nullptr;
|
|
#endif
|
|
|
|
static void
|
|
CreateContentVsyncRefreshTimer(void*)
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
MOZ_ASSERT(!XRE_IsParentProcess());
|
|
|
|
// Create the PVsync actor child for vsync-base refresh timer.
|
|
// PBackgroundChild is created asynchronously. If PBackgroundChild is still
|
|
// unavailable, setup VsyncChildCreateCallback callback to handle the async
|
|
// connect. We will still use software timer before PVsync ready, and change
|
|
// to use hw timer when the connection is done. Please check
|
|
// VsyncChildCreateCallback::CreateVsyncActor() and
|
|
// nsRefreshDriver::PVsyncActorCreated().
|
|
PBackgroundChild* backgroundChild = BackgroundChild::GetForCurrentThread();
|
|
if (backgroundChild) {
|
|
// If we already have PBackgroundChild, create the
|
|
// child VsyncRefreshDriverTimer here.
|
|
VsyncChildCreateCallback::CreateVsyncActor(backgroundChild);
|
|
return;
|
|
}
|
|
// Setup VsyncChildCreateCallback callback
|
|
nsRefPtr<nsIIPCBackgroundChildCreateCallback> callback = new VsyncChildCreateCallback();
|
|
if (NS_WARN_IF(!BackgroundChild::GetOrCreateForCurrentThread(callback))) {
|
|
MOZ_CRASH("PVsync actor create failed!");
|
|
}
|
|
}
|
|
|
|
static void
|
|
CreateVsyncRefreshTimer()
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
// Sometimes, gfxPrefs is not initialized here. Make sure the gfxPrefs is
|
|
// ready.
|
|
gfxPrefs::GetSingleton();
|
|
|
|
if (!gfxPrefs::VsyncAlignedRefreshDriver()
|
|
|| !gfxPrefs::HardwareVsyncEnabled()
|
|
|| gfxPlatform::IsInLayoutAsapMode()) {
|
|
return;
|
|
}
|
|
|
|
NS_WARNING("Enabling vsync refresh driver");
|
|
|
|
if (XRE_IsParentProcess()) {
|
|
// Make sure all vsync systems are ready.
|
|
gfxPlatform::GetPlatform();
|
|
// In parent process, we don't need to use ipc. We can create the
|
|
// VsyncRefreshDriverTimer directly.
|
|
sRegularRateTimer = new VsyncRefreshDriverTimer();
|
|
return;
|
|
}
|
|
|
|
#ifdef MOZ_NUWA_PROCESS
|
|
// NUWA process will just use software timer. Use NuwaAddFinalConstructor()
|
|
// to register a callback to create the vsync-base refresh timer after a
|
|
// process is created.
|
|
if (IsNuwaProcess()) {
|
|
NuwaAddFinalConstructor(&CreateContentVsyncRefreshTimer, nullptr);
|
|
return;
|
|
}
|
|
#endif
|
|
// If this process is not created by NUWA, just create the vsync timer here.
|
|
CreateContentVsyncRefreshTimer(nullptr);
|
|
}
|
|
|
|
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::InitializeStatics()
|
|
{
|
|
if (!gLog) {
|
|
gLog = PR_NewLogModule("nsRefreshDriver");
|
|
}
|
|
}
|
|
|
|
/* static */ void
|
|
nsRefreshDriver::Shutdown()
|
|
{
|
|
// clean up our timers
|
|
delete sRegularRateTimer;
|
|
delete sThrottledRateTimer;
|
|
|
|
sRegularRateTimer = nullptr;
|
|
sThrottledRateTimer = nullptr;
|
|
|
|
#ifdef XP_WIN
|
|
if (sDisableHighPrecisionTimersTimer) {
|
|
sDisableHighPrecisionTimersTimer->Cancel();
|
|
NS_RELEASE(sDisableHighPrecisionTimersTimer);
|
|
timeEndPeriod(1);
|
|
} else if (sHighPrecisionTimerRequests) {
|
|
timeEndPeriod(1);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/* static */ int32_t
|
|
nsRefreshDriver::DefaultInterval()
|
|
{
|
|
return NSToIntRound(1000.0 / DEFAULT_FRAME_RATE);
|
|
}
|
|
|
|
// 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(bool *outIsDefault) const
|
|
{
|
|
int32_t rate = Preferences::GetInt("layout.frame_rate", -1);
|
|
if (rate < 0) {
|
|
rate = DEFAULT_FRAME_RATE;
|
|
if (outIsDefault) {
|
|
*outIsDefault = true;
|
|
}
|
|
} else {
|
|
if (outIsDefault) {
|
|
*outIsDefault = false;
|
|
}
|
|
}
|
|
|
|
if (rate == 0) {
|
|
rate = 10000;
|
|
}
|
|
|
|
return 1000.0 / rate;
|
|
}
|
|
|
|
/* static */ double
|
|
nsRefreshDriver::GetThrottledTimerInterval()
|
|
{
|
|
int32_t rate = Preferences::GetInt("layout.throttled_frame_rate", -1);
|
|
if (rate <= 0) {
|
|
rate = DEFAULT_THROTTLED_FRAME_RATE;
|
|
}
|
|
return 1000.0 / rate;
|
|
}
|
|
|
|
/* static */ mozilla::TimeDuration
|
|
nsRefreshDriver::GetMinRecomputeVisibilityInterval()
|
|
{
|
|
int32_t interval =
|
|
Preferences::GetInt("layout.visibility.min-recompute-interval-ms", -1);
|
|
if (interval <= 0) {
|
|
interval = DEFAULT_RECOMPUTE_VISIBILITY_INTERVAL_MS;
|
|
}
|
|
return TimeDuration::FromMilliseconds(interval);
|
|
}
|
|
|
|
double
|
|
nsRefreshDriver::GetRefreshTimerInterval() const
|
|
{
|
|
return mThrottled ? GetThrottledTimerInterval() : GetRegularTimerInterval();
|
|
}
|
|
|
|
RefreshDriverTimer*
|
|
nsRefreshDriver::ChooseTimer() const
|
|
{
|
|
if (mThrottled) {
|
|
if (!sThrottledRateTimer)
|
|
sThrottledRateTimer = new InactiveRefreshDriverTimer(GetThrottledTimerInterval(),
|
|
DEFAULT_INACTIVE_TIMER_DISABLE_SECONDS * 1000.0);
|
|
return sThrottledRateTimer;
|
|
}
|
|
|
|
if (!sRegularRateTimer) {
|
|
bool isDefault = true;
|
|
double rate = GetRegularTimerInterval(&isDefault);
|
|
|
|
// Try to use vsync-base refresh timer first for sRegularRateTimer.
|
|
CreateVsyncRefreshTimer();
|
|
|
|
#ifdef XP_WIN
|
|
if (!sRegularRateTimer && PreciseRefreshDriverTimerWindowsDwmVsync::IsSupported()) {
|
|
sRegularRateTimer = new PreciseRefreshDriverTimerWindowsDwmVsync(rate, isDefault);
|
|
}
|
|
#endif
|
|
if (!sRegularRateTimer) {
|
|
sRegularRateTimer = new PreciseRefreshDriverTimer(rate);
|
|
}
|
|
}
|
|
return sRegularRateTimer;
|
|
}
|
|
|
|
nsRefreshDriver::nsRefreshDriver(nsPresContext* aPresContext)
|
|
: mActiveTimer(nullptr),
|
|
mReflowCause(nullptr),
|
|
mStyleCause(nullptr),
|
|
mPresContext(aPresContext),
|
|
mRootRefresh(nullptr),
|
|
mPendingTransaction(0),
|
|
mCompletedTransaction(0),
|
|
mFreezeCount(0),
|
|
mThrottledFrameRequestInterval(TimeDuration::FromMilliseconds(
|
|
GetThrottledTimerInterval())),
|
|
mMinRecomputeVisibilityInterval(GetMinRecomputeVisibilityInterval()),
|
|
mThrottled(false),
|
|
mNeedToRecomputeVisibility(false),
|
|
mTestControllingRefreshes(false),
|
|
mViewManagerFlushIsPending(false),
|
|
mRequestedHighPrecision(false),
|
|
mInRefresh(false),
|
|
mWaitingForTransaction(false),
|
|
mSkippedPaints(false)
|
|
{
|
|
mMostRecentRefreshEpochTime = JS_Now();
|
|
mMostRecentRefresh = TimeStamp::Now();
|
|
mMostRecentTick = mMostRecentRefresh;
|
|
mNextThrottledFrameRequestTick = mMostRecentTick;
|
|
mNextRecomputeVisibilityTick = mMostRecentTick;
|
|
}
|
|
|
|
nsRefreshDriver::~nsRefreshDriver()
|
|
{
|
|
MOZ_ASSERT(ObserverCount() == 0,
|
|
"observers should have unregistered");
|
|
MOZ_ASSERT(!mActiveTimer, "timer should be gone");
|
|
|
|
if (mRootRefresh) {
|
|
mRootRefresh->RemoveRefreshObserver(this, Flush_Style);
|
|
mRootRefresh = nullptr;
|
|
}
|
|
for (nsIPresShell* shell : mPresShellsToInvalidateIfHidden) {
|
|
shell->InvalidatePresShellIfHidden();
|
|
}
|
|
mPresShellsToInvalidateIfHidden.Clear();
|
|
|
|
profiler_free_backtrace(mStyleCause);
|
|
profiler_free_backtrace(mReflowCause);
|
|
}
|
|
|
|
// 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) {
|
|
mMostRecentRefreshEpochTime = JS_Now();
|
|
mMostRecentRefresh = TimeStamp::Now();
|
|
|
|
mTestControllingRefreshes = true;
|
|
if (mWaitingForTransaction) {
|
|
// Disable any refresh driver throttling when entering test mode
|
|
mWaitingForTransaction = false;
|
|
mSkippedPaints = false;
|
|
}
|
|
}
|
|
|
|
mMostRecentRefreshEpochTime += aMilliseconds * 1000;
|
|
mMostRecentRefresh += TimeDuration::FromMilliseconds((double) aMilliseconds);
|
|
|
|
mozilla::dom::AutoNoJSAPI nojsapi;
|
|
DoTick();
|
|
}
|
|
|
|
void
|
|
nsRefreshDriver::RestoreNormalRefresh()
|
|
{
|
|
mTestControllingRefreshes = false;
|
|
EnsureTimerStarted(eAllowTimeToGoBackwards);
|
|
mCompletedTransaction = mPendingTransaction;
|
|
}
|
|
|
|
TimeStamp
|
|
nsRefreshDriver::MostRecentRefresh() const
|
|
{
|
|
const_cast<nsRefreshDriver*>(this)->EnsureTimerStarted();
|
|
|
|
return mMostRecentRefresh;
|
|
}
|
|
|
|
int64_t
|
|
nsRefreshDriver::MostRecentRefreshEpochTime() const
|
|
{
|
|
const_cast<nsRefreshDriver*>(this)->EnsureTimerStarted();
|
|
|
|
return mMostRecentRefreshEpochTime;
|
|
}
|
|
|
|
bool
|
|
nsRefreshDriver::AddRefreshObserver(nsARefreshObserver* aObserver,
|
|
mozFlushType aFlushType)
|
|
{
|
|
ObserverArray& array = ArrayFor(aFlushType);
|
|
bool success = array.AppendElement(aObserver) != nullptr;
|
|
EnsureTimerStarted();
|
|
return success;
|
|
}
|
|
|
|
bool
|
|
nsRefreshDriver::RemoveRefreshObserver(nsARefreshObserver* aObserver,
|
|
mozFlushType aFlushType)
|
|
{
|
|
ObserverArray& array = ArrayFor(aFlushType);
|
|
return array.RemoveElement(aObserver);
|
|
}
|
|
|
|
void
|
|
nsRefreshDriver::AddPostRefreshObserver(nsAPostRefreshObserver* aObserver)
|
|
{
|
|
mPostRefreshObservers.AppendElement(aObserver);
|
|
}
|
|
|
|
void
|
|
nsRefreshDriver::RemovePostRefreshObserver(nsAPostRefreshObserver* aObserver)
|
|
{
|
|
mPostRefreshObservers.RemoveElement(aObserver);
|
|
}
|
|
|
|
bool
|
|
nsRefreshDriver::AddImageRequest(imgIRequest* aRequest)
|
|
{
|
|
uint32_t delay = GetFirstFrameDelay(aRequest);
|
|
if (delay == 0) {
|
|
if (!mRequests.PutEntry(aRequest)) {
|
|
return false;
|
|
}
|
|
} else {
|
|
ImageStartData* start = mStartTable.Get(delay);
|
|
if (!start) {
|
|
start = new ImageStartData();
|
|
mStartTable.Put(delay, start);
|
|
}
|
|
start->mEntries.PutEntry(aRequest);
|
|
}
|
|
|
|
EnsureTimerStarted();
|
|
|
|
return true;
|
|
}
|
|
|
|
void
|
|
nsRefreshDriver::RemoveImageRequest(imgIRequest* aRequest)
|
|
{
|
|
// Try to remove from both places, just in case, because we can't tell
|
|
// whether RemoveEntry() succeeds.
|
|
mRequests.RemoveEntry(aRequest);
|
|
uint32_t delay = GetFirstFrameDelay(aRequest);
|
|
if (delay != 0) {
|
|
ImageStartData* start = mStartTable.Get(delay);
|
|
if (start) {
|
|
start->mEntries.RemoveEntry(aRequest);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nsRefreshDriver::EnsureTimerStarted(EnsureTimerStartedFlags aFlags)
|
|
{
|
|
if (mTestControllingRefreshes)
|
|
return;
|
|
|
|
// will it already fire, and no other changes needed?
|
|
if (mActiveTimer && !(aFlags & eAdjustingTimer))
|
|
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).
|
|
nsIURI* uri = mPresContext->Document()->GetDocumentURI();
|
|
if (!uri || !IsFontTableURI(uri)) {
|
|
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);
|
|
}
|
|
|
|
// 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. However, the refresh driver time
|
|
// should not go backwards so we clamp the most recent refresh time.
|
|
//
|
|
// The one exception to this is when we are restoring the refresh driver
|
|
// from test control in which case the time is expected to go backwards
|
|
// (see bug 1043078).
|
|
mMostRecentRefresh =
|
|
aFlags & eAllowTimeToGoBackwards
|
|
? mActiveTimer->MostRecentRefresh()
|
|
: std::max(mActiveTimer->MostRecentRefresh(), mMostRecentRefresh);
|
|
mMostRecentRefreshEpochTime =
|
|
aFlags & eAllowTimeToGoBackwards
|
|
? mActiveTimer->MostRecentRefreshEpochTime()
|
|
: std::max(mActiveTimer->MostRecentRefreshEpochTime(),
|
|
mMostRecentRefreshEpochTime);
|
|
}
|
|
|
|
void
|
|
nsRefreshDriver::StopTimer()
|
|
{
|
|
if (!mActiveTimer)
|
|
return;
|
|
|
|
mActiveTimer->RemoveRefreshDriver(this);
|
|
mActiveTimer = nullptr;
|
|
|
|
if (mRequestedHighPrecision) {
|
|
SetHighPrecisionTimersEnabled(false);
|
|
}
|
|
}
|
|
|
|
#ifdef XP_WIN
|
|
static void
|
|
DisableHighPrecisionTimersCallback(nsITimer *aTimer, void *aClosure)
|
|
{
|
|
timeEndPeriod(1);
|
|
NS_RELEASE(sDisableHighPrecisionTimersTimer);
|
|
}
|
|
#endif
|
|
|
|
void
|
|
nsRefreshDriver::ConfigureHighPrecision()
|
|
{
|
|
bool haveUnthrottledFrameRequestCallbacks =
|
|
mFrameRequestCallbackDocs.Length() > 0;
|
|
|
|
// if the only change that's needed is that we need high precision,
|
|
// then just set that
|
|
if (!mThrottled && !mRequestedHighPrecision &&
|
|
haveUnthrottledFrameRequestCallbacks) {
|
|
SetHighPrecisionTimersEnabled(true);
|
|
} else if (mRequestedHighPrecision && !haveUnthrottledFrameRequestCallbacks) {
|
|
SetHighPrecisionTimersEnabled(false);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsRefreshDriver::SetHighPrecisionTimersEnabled(bool aEnable)
|
|
{
|
|
LOG("[%p] SetHighPrecisionTimersEnabled (%s)", this, aEnable ? "true" : "false");
|
|
|
|
if (aEnable) {
|
|
NS_ASSERTION(!mRequestedHighPrecision, "SetHighPrecisionTimersEnabled(true) called when already requested!");
|
|
#ifdef XP_WIN
|
|
if (++sHighPrecisionTimerRequests == 1) {
|
|
// If we had a timer scheduled to disable it, that means that it's already
|
|
// enabled; just cancel the timer. Otherwise, really enable it.
|
|
if (sDisableHighPrecisionTimersTimer) {
|
|
sDisableHighPrecisionTimersTimer->Cancel();
|
|
NS_RELEASE(sDisableHighPrecisionTimersTimer);
|
|
} else {
|
|
timeBeginPeriod(1);
|
|
}
|
|
}
|
|
#endif
|
|
mRequestedHighPrecision = true;
|
|
} else {
|
|
NS_ASSERTION(mRequestedHighPrecision, "SetHighPrecisionTimersEnabled(false) called when not requested!");
|
|
#ifdef XP_WIN
|
|
if (--sHighPrecisionTimerRequests == 0) {
|
|
// Don't jerk us around between high precision and low precision
|
|
// timers; instead, only allow leaving high precision timers
|
|
// after 90 seconds. This is arbitrary, but hopefully good
|
|
// enough.
|
|
NS_ASSERTION(!sDisableHighPrecisionTimersTimer, "We shouldn't have an outstanding disable-high-precision timer !");
|
|
|
|
nsCOMPtr<nsITimer> timer = do_CreateInstance(NS_TIMER_CONTRACTID);
|
|
if (timer) {
|
|
timer.forget(&sDisableHighPrecisionTimersTimer);
|
|
sDisableHighPrecisionTimersTimer->InitWithFuncCallback(DisableHighPrecisionTimersCallback,
|
|
nullptr,
|
|
90 * 1000,
|
|
nsITimer::TYPE_ONE_SHOT);
|
|
} else {
|
|
// might happen if we're shutting down XPCOM; just drop the time period down
|
|
// immediately
|
|
timeEndPeriod(1);
|
|
}
|
|
}
|
|
#endif
|
|
mRequestedHighPrecision = false;
|
|
}
|
|
}
|
|
|
|
uint32_t
|
|
nsRefreshDriver::ObserverCount() const
|
|
{
|
|
uint32_t sum = 0;
|
|
for (uint32_t i = 0; i < ArrayLength(mObservers); ++i) {
|
|
sum += mObservers[i].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 += mStyleFlushObservers.Length();
|
|
sum += mLayoutFlushObservers.Length();
|
|
sum += mPendingEvents.Length();
|
|
sum += mFrameRequestCallbackDocs.Length();
|
|
sum += mThrottledFrameRequestCallbackDocs.Length();
|
|
sum += mViewManagerFlushIsPending;
|
|
return sum;
|
|
}
|
|
|
|
/* static */ PLDHashOperator
|
|
nsRefreshDriver::StartTableRequestCounter(const uint32_t& aKey,
|
|
ImageStartData* aEntry,
|
|
void* aUserArg)
|
|
{
|
|
uint32_t *count = static_cast<uint32_t*>(aUserArg);
|
|
*count += aEntry->mEntries.Count();
|
|
|
|
return PL_DHASH_NEXT;
|
|
}
|
|
|
|
uint32_t
|
|
nsRefreshDriver::ImageRequestCount() const
|
|
{
|
|
uint32_t count = 0;
|
|
mStartTable.EnumerateRead(nsRefreshDriver::StartTableRequestCounter, &count);
|
|
return count + mRequests.Count();
|
|
}
|
|
|
|
nsRefreshDriver::ObserverArray&
|
|
nsRefreshDriver::ArrayFor(mozFlushType aFlushType)
|
|
{
|
|
switch (aFlushType) {
|
|
case Flush_Style:
|
|
return mObservers[0];
|
|
case Flush_Layout:
|
|
return mObservers[1];
|
|
case Flush_Display:
|
|
return mObservers[2];
|
|
default:
|
|
MOZ_ASSERT(false, "bad flush type");
|
|
return *static_cast<ObserverArray*>(nullptr);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* nsITimerCallback implementation
|
|
*/
|
|
|
|
void
|
|
nsRefreshDriver::DoTick()
|
|
{
|
|
NS_PRECONDITION(!IsFrozen(), "Why are we notified while frozen?");
|
|
NS_PRECONDITION(mPresContext, "Why are we notified after disconnection?");
|
|
NS_PRECONDITION(!nsContentUtils::GetCurrentJSContext(),
|
|
"Shouldn't have a JSContext on the stack");
|
|
|
|
if (mTestControllingRefreshes) {
|
|
Tick(mMostRecentRefreshEpochTime, mMostRecentRefresh);
|
|
} else {
|
|
Tick(JS_Now(), TimeStamp::Now());
|
|
}
|
|
}
|
|
|
|
struct DocumentFrameCallbacks {
|
|
explicit DocumentFrameCallbacks(nsIDocument* aDocument) :
|
|
mDocument(aDocument)
|
|
{}
|
|
|
|
nsCOMPtr<nsIDocument> mDocument;
|
|
nsIDocument::FrameRequestCallbackList mCallbacks;
|
|
};
|
|
|
|
static nsDocShell* GetDocShell(nsPresContext* aPresContext)
|
|
{
|
|
return static_cast<nsDocShell*>(aPresContext->GetDocShell());
|
|
}
|
|
|
|
static bool
|
|
HasPendingAnimations(nsIPresShell* aShell)
|
|
{
|
|
nsIDocument* doc = aShell->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 || TimelineConsumers::IsEmpty()) {
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsISimpleEnumerator> enumerator;
|
|
nsresult rv = aRootDocShell->GetDocShellEnumerator(nsIDocShellTreeItem::typeAll,
|
|
nsIDocShell::ENUMERATE_BACKWARDS, getter_AddRefs(enumerator));
|
|
|
|
if (NS_FAILED(rv)) {
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsIDocShell> curItem;
|
|
bool hasMore = false;
|
|
while (NS_SUCCEEDED(enumerator->HasMoreElements(&hasMore)) && hasMore) {
|
|
nsCOMPtr<nsISupports> curSupports;
|
|
enumerator->GetNext(getter_AddRefs(curSupports));
|
|
curItem = do_QueryInterface(curSupports);
|
|
|
|
if (!curItem || !curItem->GetRecordProfileTimelineMarkers()) {
|
|
continue;
|
|
}
|
|
|
|
nsDocShell* shell = static_cast<nsDocShell*>(curItem.get());
|
|
bool isVisible = false;
|
|
shell->GetVisibility(&isVisible);
|
|
if (!isVisible) {
|
|
continue;
|
|
}
|
|
|
|
aShells.AppendElement(shell);
|
|
};
|
|
}
|
|
|
|
static void
|
|
TakeFrameRequestCallbacksFrom(nsIDocument* aDocument,
|
|
nsTArray<DocumentFrameCallbacks>& aTarget)
|
|
{
|
|
aTarget.AppendElement(aDocument);
|
|
aDocument->TakeFrameRequestCallbacks(aTarget.LastElement().mCallbacks);
|
|
}
|
|
|
|
void
|
|
nsRefreshDriver::DispatchPendingEvents()
|
|
{
|
|
// Swap out the current pending events
|
|
nsTArray<PendingEvent> pendingEvents(Move(mPendingEvents));
|
|
for (PendingEvent& event : pendingEvents) {
|
|
bool dummy;
|
|
event.mTarget->DispatchEvent(event.mEvent, &dummy);
|
|
}
|
|
}
|
|
|
|
namespace {
|
|
enum class AnimationEventType {
|
|
CSSAnimations,
|
|
CSSTransitions
|
|
};
|
|
|
|
struct DispatchAnimationEventParams {
|
|
AnimationEventType mEventType;
|
|
nsRefreshDriver* mRefreshDriver;
|
|
};
|
|
}
|
|
|
|
static bool
|
|
DispatchAnimationEventsOnSubDocuments(nsIDocument* aDocument,
|
|
void* aParams)
|
|
{
|
|
MOZ_ASSERT(aParams, "Animation event parameters should be set");
|
|
auto params = static_cast<DispatchAnimationEventParams*>(aParams);
|
|
|
|
nsIPresShell* shell = aDocument->GetShell();
|
|
if (!shell) {
|
|
return true;
|
|
}
|
|
|
|
nsPresContext* context = shell->GetPresContext();
|
|
if (!context || context->RefreshDriver() != params->mRefreshDriver) {
|
|
return true;
|
|
}
|
|
|
|
nsCOMPtr<nsIDocument> kungFuDeathGrip(aDocument);
|
|
|
|
if (params->mEventType == AnimationEventType::CSSAnimations) {
|
|
context->AnimationManager()->DispatchEvents();
|
|
} else {
|
|
context->TransitionManager()->DispatchEvents();
|
|
}
|
|
aDocument->EnumerateSubDocuments(DispatchAnimationEventsOnSubDocuments,
|
|
aParams);
|
|
|
|
return true;
|
|
}
|
|
|
|
void
|
|
nsRefreshDriver::DispatchAnimationEvents()
|
|
{
|
|
if (!mPresContext) {
|
|
return;
|
|
}
|
|
|
|
nsIDocument* doc = mPresContext->Document();
|
|
|
|
// Dispatch transition events first since transitions conceptually sit
|
|
// below animations in terms of compositing order.
|
|
DispatchAnimationEventParams params { AnimationEventType::CSSTransitions,
|
|
this };
|
|
DispatchAnimationEventsOnSubDocuments(doc, ¶ms);
|
|
if (!mPresContext) {
|
|
return;
|
|
}
|
|
|
|
params.mEventType = AnimationEventType::CSSAnimations;
|
|
DispatchAnimationEventsOnSubDocuments(doc, ¶ms);
|
|
}
|
|
|
|
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<nsIDocument*> 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 (nsIDocument* 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 (nsIDocument* doc : docsToRemove) {
|
|
mThrottledFrameRequestCallbackDocs.RemoveElement(doc);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Now grab unthrottled frame request callbacks.
|
|
for (nsIDocument* doc : mFrameRequestCallbackDocs) {
|
|
TakeFrameRequestCallbacksFrom(doc, frameRequestCallbacks);
|
|
}
|
|
|
|
// Reset mFrameRequestCallbackDocs so they can be readded as needed.
|
|
mFrameRequestCallbackDocs.Clear();
|
|
|
|
if (!frameRequestCallbacks.IsEmpty()) {
|
|
profiler_tracing("Paint", "Scripts", TRACING_INTERVAL_START);
|
|
for (const DocumentFrameCallbacks& docCallbacks : frameRequestCallbacks) {
|
|
// XXXbz Bug 863140: GetInnerWindow can return the outer
|
|
// window in some cases.
|
|
nsPIDOMWindow* innerWindow = docCallbacks.mDocument->GetInnerWindow();
|
|
DOMHighResTimeStamp timeStamp = 0;
|
|
if (innerWindow && innerWindow->IsInnerWindow()) {
|
|
nsPerformance* perf = innerWindow->GetPerformance();
|
|
if (perf) {
|
|
timeStamp = perf->GetDOMTiming()->TimeStampToDOMHighRes(aNowTime);
|
|
}
|
|
// else window is partially torn down already
|
|
}
|
|
for (auto& callback : docCallbacks.mCallbacks) {
|
|
ErrorResult ignored;
|
|
callback->Call(timeStamp, ignored);
|
|
ignored.SuppressException();
|
|
}
|
|
}
|
|
profiler_tracing("Paint", "Scripts", TRACING_INTERVAL_END);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsRefreshDriver::Tick(int64_t aNowEpoch, TimeStamp aNowTime)
|
|
{
|
|
NS_PRECONDITION(!nsContentUtils::GetCurrentJSContext(),
|
|
"Shouldn't have a JSContext on the stack");
|
|
|
|
if (nsNPAPIPluginInstance::InPluginCallUnsafeForReentry()) {
|
|
NS_ERROR("Refresh driver should not run during plugin call!");
|
|
// Try to survive this by just ignoring the refresh tick.
|
|
return;
|
|
}
|
|
|
|
PROFILER_LABEL("nsRefreshDriver", "Tick",
|
|
js::ProfileEntry::Category::GRAPHICS);
|
|
|
|
// 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 ((aNowTime <= mMostRecentRefresh) && !mTestControllingRefreshes) {
|
|
return;
|
|
}
|
|
|
|
TimeStamp previousRefresh = mMostRecentRefresh;
|
|
|
|
mMostRecentRefresh = aNowTime;
|
|
mMostRecentRefreshEpochTime = aNowEpoch;
|
|
|
|
if (IsWaitingForPaint(aNowTime)) {
|
|
// We're currently suspended waiting for earlier Tick's to
|
|
// be completed (on the Compositor). Mark that we missed the paint
|
|
// and keep waiting.
|
|
return;
|
|
}
|
|
mMostRecentTick = aNowTime;
|
|
if (mRootRefresh) {
|
|
mRootRefresh->RemoveRefreshObserver(this, Flush_Style);
|
|
mRootRefresh = nullptr;
|
|
}
|
|
mSkippedPaints = false;
|
|
|
|
nsCOMPtr<nsIPresShell> presShell = mPresContext->GetPresShell();
|
|
if (!presShell || (ObserverCount() == 0 && ImageRequestCount() == 0)) {
|
|
// Things are being destroyed, or we no longer have any observers.
|
|
// 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.
|
|
StopTimer();
|
|
return;
|
|
}
|
|
|
|
AutoRestore<bool> restoreInRefresh(mInRefresh);
|
|
mInRefresh = true;
|
|
|
|
AutoRestore<TimeStamp> restoreTickStart(mTickStart);
|
|
mTickStart = TimeStamp::Now();
|
|
|
|
/*
|
|
* 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) {
|
|
ObserverArray::EndLimitedIterator etor(mObservers[i]);
|
|
while (etor.HasMore()) {
|
|
nsRefPtr<nsARefreshObserver> obs = etor.GetNext();
|
|
obs->WillRefresh(aNowTime);
|
|
|
|
if (!mPresContext || !mPresContext->GetPresShell()) {
|
|
StopTimer();
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (i == 0) {
|
|
// This is the Flush_Style case.
|
|
|
|
DispatchAnimationEvents();
|
|
DispatchPendingEvents();
|
|
RunFrameRequestCallbacks(aNowTime);
|
|
|
|
if (mPresContext && mPresContext->GetPresShell()) {
|
|
bool tracingStyleFlush = false;
|
|
nsAutoTArray<nsIPresShell*, 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.
|
|
nsIPresShell* shell = observers[j - 1];
|
|
if (!mStyleFlushObservers.Contains(shell))
|
|
continue;
|
|
|
|
if (!tracingStyleFlush) {
|
|
tracingStyleFlush = true;
|
|
profiler_tracing("Paint", "Styles", mStyleCause, TRACING_INTERVAL_START);
|
|
mStyleCause = nullptr;
|
|
}
|
|
|
|
NS_ADDREF(shell);
|
|
mStyleFlushObservers.RemoveElement(shell);
|
|
shell->GetPresContext()->RestyleManager()->mObservingRefreshDriver = false;
|
|
shell->FlushPendingNotifications(ChangesToFlush(Flush_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).
|
|
nsPresContext* presContext = shell->GetPresContext();
|
|
if (presContext) {
|
|
presContext->NotifyFontFaceSetOnRefresh();
|
|
}
|
|
NS_RELEASE(shell);
|
|
}
|
|
|
|
mNeedToRecomputeVisibility = true;
|
|
|
|
if (tracingStyleFlush) {
|
|
profiler_tracing("Paint", "Styles", TRACING_INTERVAL_END);
|
|
}
|
|
|
|
if (!nsLayoutUtils::AreAsyncAnimationsEnabled()) {
|
|
mPresContext->TickLastStyleUpdateForAllAnimations();
|
|
}
|
|
}
|
|
} else if (i == 1) {
|
|
// This is the Flush_Layout case.
|
|
bool tracingLayoutFlush = false;
|
|
nsAutoTArray<nsIPresShell*, 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.
|
|
nsIPresShell* shell = observers[j - 1];
|
|
if (!mLayoutFlushObservers.Contains(shell))
|
|
continue;
|
|
|
|
if (!tracingLayoutFlush) {
|
|
tracingLayoutFlush = true;
|
|
profiler_tracing("Paint", "Reflow", mReflowCause, TRACING_INTERVAL_START);
|
|
mReflowCause = nullptr;
|
|
}
|
|
|
|
NS_ADDREF(shell);
|
|
mLayoutFlushObservers.RemoveElement(shell);
|
|
shell->mReflowScheduled = false;
|
|
shell->mSuppressInterruptibleReflows = false;
|
|
mozFlushType flushType = HasPendingAnimations(shell)
|
|
? Flush_Layout
|
|
: Flush_InterruptibleLayout;
|
|
shell->FlushPendingNotifications(ChangesToFlush(flushType, false));
|
|
// Inform the FontFaceSet that we ticked, so that it can resolve its
|
|
// ready promise if it needs to.
|
|
nsPresContext* presContext = shell->GetPresContext();
|
|
if (presContext) {
|
|
presContext->NotifyFontFaceSetOnRefresh();
|
|
}
|
|
NS_RELEASE(shell);
|
|
}
|
|
|
|
mNeedToRecomputeVisibility = true;
|
|
|
|
if (tracingLayoutFlush) {
|
|
profiler_tracing("Paint", "Reflow", TRACING_INTERVAL_END);
|
|
}
|
|
}
|
|
|
|
// The pres context may be destroyed during we do the flushing.
|
|
if (!mPresContext || !mPresContext->GetPresShell()) {
|
|
StopTimer();
|
|
return;
|
|
}
|
|
}
|
|
|
|
// Recompute image 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->ScheduleImageVisibilityUpdate();
|
|
}
|
|
|
|
/*
|
|
* Perform notification to imgIRequests subscribed to listen
|
|
* for refresh events.
|
|
*/
|
|
|
|
ImageRequestParameters parms = {aNowTime, previousRefresh, &mRequests};
|
|
|
|
mStartTable.EnumerateRead(nsRefreshDriver::StartTableRefresh, &parms);
|
|
|
|
if (mRequests.Count()) {
|
|
// 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.
|
|
nsCOMArray<imgIContainer> imagesToRefresh(mRequests.Count());
|
|
|
|
for (auto iter = mRequests.Iter(); !iter.Done(); iter.Next()) {
|
|
nsISupportsHashKey* entry = iter.Get();
|
|
auto req = static_cast<imgIRequest*>(entry->GetKey());
|
|
MOZ_ASSERT(req, "Unable to retrieve the image request");
|
|
nsCOMPtr<imgIContainer> image;
|
|
if (NS_SUCCEEDED(req->GetImage(getter_AddRefs(image)))) {
|
|
imagesToRefresh.AppendElement(image);
|
|
}
|
|
}
|
|
|
|
for (uint32_t i = 0; i < imagesToRefresh.Length(); i++) {
|
|
imagesToRefresh[i]->RequestRefresh(aNowTime);
|
|
}
|
|
}
|
|
|
|
for (nsIPresShell* shell : mPresShellsToInvalidateIfHidden) {
|
|
shell->InvalidatePresShellIfHidden();
|
|
}
|
|
mPresShellsToInvalidateIfHidden.Clear();
|
|
|
|
if (mViewManagerFlushIsPending) {
|
|
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
|
|
TimelineConsumers::AddMarkerForDocShell(docShell, "Paint", TRACING_INTERVAL_START);
|
|
}
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
if (nsLayoutUtils::InvalidationDebuggingIsEnabled()) {
|
|
printf_stderr("Starting ProcessPendingUpdates\n");
|
|
}
|
|
#endif
|
|
|
|
mViewManagerFlushIsPending = false;
|
|
nsRefPtr<nsViewManager> vm = mPresContext->GetPresShell()->GetViewManager();
|
|
vm->ProcessPendingUpdates();
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
if (nsLayoutUtils::InvalidationDebuggingIsEnabled()) {
|
|
printf_stderr("Ending ProcessPendingUpdates\n");
|
|
}
|
|
#endif
|
|
for (nsDocShell* docShell : profilingDocShells) {
|
|
TimelineConsumers::AddMarkerForDocShell(docShell, "Paint", TRACING_INTERVAL_END);
|
|
}
|
|
|
|
if (nsContentUtils::XPConnect()) {
|
|
nsContentUtils::XPConnect()->NotifyDidPaint();
|
|
nsJSContext::NotifyDidPaint();
|
|
}
|
|
}
|
|
|
|
#ifndef ANDROID /* bug 1142079 */
|
|
mozilla::Telemetry::AccumulateTimeDelta(mozilla::Telemetry::REFRESH_DRIVER_TICK, mTickStart);
|
|
#endif
|
|
|
|
nsTObserverArray<nsAPostRefreshObserver*>::ForwardIterator iter(mPostRefreshObservers);
|
|
while (iter.HasMore()) {
|
|
nsAPostRefreshObserver* observer = iter.GetNext();
|
|
observer->DidRefresh();
|
|
}
|
|
|
|
ConfigureHighPrecision();
|
|
|
|
NS_ASSERTION(mInRefresh, "Still in refresh");
|
|
}
|
|
|
|
void
|
|
nsRefreshDriver::BeginRefreshingImages(RequestTable& aEntries,
|
|
ImageRequestParameters* aParms)
|
|
{
|
|
for (auto iter = aEntries.Iter(); !iter.Done(); iter.Next()) {
|
|
auto req = static_cast<imgIRequest*>(iter.Get()->GetKey());
|
|
MOZ_ASSERT(req, "Unable to retrieve the image request");
|
|
|
|
aParms->mRequests->PutEntry(req);
|
|
|
|
nsCOMPtr<imgIContainer> image;
|
|
if (NS_SUCCEEDED(req->GetImage(getter_AddRefs(image)))) {
|
|
image->SetAnimationStartTime(aParms->mDesired);
|
|
}
|
|
}
|
|
aEntries.Clear();
|
|
}
|
|
|
|
/* static */ PLDHashOperator
|
|
nsRefreshDriver::StartTableRefresh(const uint32_t& aDelay,
|
|
ImageStartData* aData,
|
|
void* aUserArg)
|
|
{
|
|
ImageRequestParameters* parms =
|
|
static_cast<ImageRequestParameters*> (aUserArg);
|
|
|
|
if (aData->mStartTime) {
|
|
TimeStamp& start = *aData->mStartTime;
|
|
TimeDuration prev = parms->mPrevious - start;
|
|
TimeDuration curr = parms->mCurrent - start;
|
|
uint32_t prevMultiple = static_cast<uint32_t>(prev.ToMilliseconds()) / aDelay;
|
|
|
|
// 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 != static_cast<uint32_t>(curr.ToMilliseconds()) / aDelay) {
|
|
parms->mDesired = start + TimeDuration::FromMilliseconds(prevMultiple * aDelay);
|
|
BeginRefreshingImages(aData->mEntries, parms);
|
|
}
|
|
} 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.
|
|
parms->mDesired = parms->mCurrent;
|
|
BeginRefreshingImages(aData->mEntries, parms);
|
|
aData->mStartTime.emplace(parms->mCurrent);
|
|
}
|
|
|
|
return PL_DHASH_NEXT;
|
|
}
|
|
|
|
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 (ObserverCount() || ImageRequestCount()) {
|
|
// 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.
|
|
NS_DispatchToCurrentThread(NS_NewRunnableMethod(this, &nsRefreshDriver::DoRefresh));
|
|
EnsureTimerStarted();
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nsRefreshDriver::FinishedWaitingForTransaction()
|
|
{
|
|
mWaitingForTransaction = false;
|
|
if (mSkippedPaints &&
|
|
!IsInRefresh() &&
|
|
(ObserverCount() || ImageRequestCount())) {
|
|
profiler_tracing("Paint", "RD", TRACING_INTERVAL_START);
|
|
DoRefresh();
|
|
profiler_tracing("Paint", "RD", TRACING_INTERVAL_END);
|
|
}
|
|
mSkippedPaints = false;
|
|
}
|
|
|
|
uint64_t
|
|
nsRefreshDriver::GetTransactionId()
|
|
{
|
|
++mPendingTransaction;
|
|
|
|
if (mPendingTransaction >= mCompletedTransaction + 2 &&
|
|
!mWaitingForTransaction &&
|
|
!mTestControllingRefreshes) {
|
|
mWaitingForTransaction = true;
|
|
mSkippedPaints = false;
|
|
}
|
|
|
|
return mPendingTransaction;
|
|
}
|
|
|
|
void
|
|
nsRefreshDriver::RevokeTransactionId(uint64_t aTransactionId)
|
|
{
|
|
MOZ_ASSERT(aTransactionId == mPendingTransaction);
|
|
if (mPendingTransaction == mCompletedTransaction + 2 &&
|
|
mWaitingForTransaction) {
|
|
MOZ_ASSERT(!mSkippedPaints, "How did we skip a paint when we're in the middle of one?");
|
|
FinishedWaitingForTransaction();
|
|
}
|
|
mPendingTransaction--;
|
|
}
|
|
|
|
mozilla::TimeStamp
|
|
nsRefreshDriver::GetTransactionStart()
|
|
{
|
|
return mTickStart;
|
|
}
|
|
|
|
void
|
|
nsRefreshDriver::NotifyTransactionCompleted(uint64_t aTransactionId)
|
|
{
|
|
if (aTransactionId > mCompletedTransaction) {
|
|
if (mPendingTransaction > mCompletedTransaction + 1 &&
|
|
mWaitingForTransaction) {
|
|
mCompletedTransaction = aTransactionId;
|
|
FinishedWaitingForTransaction();
|
|
} else {
|
|
mCompletedTransaction = aTransactionId;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nsRefreshDriver::WillRefresh(mozilla::TimeStamp aTime)
|
|
{
|
|
mRootRefresh->RemoveRefreshObserver(this, Flush_Style);
|
|
mRootRefresh = nullptr;
|
|
if (mSkippedPaints) {
|
|
DoRefresh();
|
|
}
|
|
}
|
|
|
|
bool
|
|
nsRefreshDriver::IsWaitingForPaint(mozilla::TimeStamp aTime)
|
|
{
|
|
if (mTestControllingRefreshes) {
|
|
return false;
|
|
}
|
|
// If we've skipped too many ticks then it's possible
|
|
// that something went wrong and we're waiting on
|
|
// a notification that will never arrive.
|
|
if (aTime > (mMostRecentTick + TimeDuration::FromMilliseconds(200))) {
|
|
mSkippedPaints = false;
|
|
mWaitingForTransaction = false;
|
|
if (mRootRefresh) {
|
|
mRootRefresh->RemoveRefreshObserver(this, Flush_Style);
|
|
}
|
|
return false;
|
|
}
|
|
if (mWaitingForTransaction) {
|
|
mSkippedPaints = true;
|
|
return true;
|
|
}
|
|
|
|
// Try find the 'root' refresh driver for the current window and check
|
|
// if that is waiting for a paint.
|
|
nsPresContext *displayRoot = PresContext()->GetDisplayRootPresContext();
|
|
if (displayRoot) {
|
|
nsRefreshDriver *rootRefresh = displayRoot->GetRootPresContext()->RefreshDriver();
|
|
if (rootRefresh && rootRefresh != this) {
|
|
if (rootRefresh->IsWaitingForPaint(aTime)) {
|
|
if (mRootRefresh != rootRefresh) {
|
|
if (mRootRefresh) {
|
|
mRootRefresh->RemoveRefreshObserver(this, Flush_Style);
|
|
}
|
|
rootRefresh->AddRefreshObserver(this, Flush_Style);
|
|
mRootRefresh = rootRefresh;
|
|
}
|
|
mSkippedPaints = true;
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void
|
|
nsRefreshDriver::SetThrottled(bool aThrottled)
|
|
{
|
|
if (aThrottled != mThrottled) {
|
|
mThrottled = aThrottled;
|
|
if (mActiveTimer) {
|
|
// We want to switch our timer type here, so just stop and
|
|
// restart the timer.
|
|
EnsureTimerStarted(eAdjustingTimer);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*static*/ void
|
|
nsRefreshDriver::PVsyncActorCreated(VsyncChild* aVsyncChild)
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
MOZ_ASSERT(!XRE_IsParentProcess());
|
|
VsyncRefreshDriverTimer* vsyncRefreshDriverTimer =
|
|
new VsyncRefreshDriverTimer(aVsyncChild);
|
|
|
|
// If we are using software timer, swap current timer to
|
|
// VsyncRefreshDriverTimer.
|
|
if (sRegularRateTimer) {
|
|
sRegularRateTimer->SwapRefreshDrivers(vsyncRefreshDriverTimer);
|
|
delete sRegularRateTimer;
|
|
}
|
|
sRegularRateTimer = vsyncRefreshDriverTimer;
|
|
}
|
|
|
|
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,
|
|
mozFlushType aFlushType)
|
|
{
|
|
ObserverArray& array = ArrayFor(aFlushType);
|
|
return array.Contains(aObserver);
|
|
}
|
|
#endif
|
|
|
|
void
|
|
nsRefreshDriver::ScheduleViewManagerFlush()
|
|
{
|
|
NS_ASSERTION(mPresContext->IsRoot(),
|
|
"Should only schedule view manager flush on root prescontexts");
|
|
mViewManagerFlushIsPending = true;
|
|
EnsureTimerStarted();
|
|
}
|
|
|
|
void
|
|
nsRefreshDriver::ScheduleFrameRequestCallbacks(nsIDocument* 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
|
|
ConfigureHighPrecision();
|
|
EnsureTimerStarted();
|
|
}
|
|
|
|
void
|
|
nsRefreshDriver::RevokeFrameRequestCallbacks(nsIDocument* aDocument)
|
|
{
|
|
mFrameRequestCallbackDocs.RemoveElement(aDocument);
|
|
mThrottledFrameRequestCallbackDocs.RemoveElement(aDocument);
|
|
ConfigureHighPrecision();
|
|
// 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::ScheduleEventDispatch(nsINode* aTarget, nsIDOMEvent* aEvent)
|
|
{
|
|
mPendingEvents.AppendElement(PendingEvent{aTarget, aEvent});
|
|
// make sure that the timer is running
|
|
EnsureTimerStarted();
|
|
}
|
|
|
|
void
|
|
nsRefreshDriver::CancelPendingEvents(nsIDocument* aDocument)
|
|
{
|
|
for (auto i : Reversed(MakeRange(mPendingEvents.Length()))) {
|
|
if (mPendingEvents[i].mTarget->OwnerDoc() == aDocument) {
|
|
mPendingEvents.RemoveElementAt(i);
|
|
}
|
|
}
|
|
}
|
|
|
|
#undef LOG
|