mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
2133 lines
67 KiB
C++
2133 lines
67 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 "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 "nsIFrameRequestCallback.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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#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
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LOG("[%p] precise timer last tick late by %f ms, next tick in %d ms",
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this,
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(aNowTime - mTargetTime).ToMilliseconds(),
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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 += 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 || nsDocShell::gProfileTimelineRecordingsCount == 0) {
|
|
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::RunFrameRequestCallbacks(int64_t aNowEpoch, 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);
|
|
int64_t eventTime = aNowEpoch / PR_USEC_PER_MSEC;
|
|
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 (const nsIDocument::FrameRequestCallbackHolder& holder :
|
|
docCallbacks.mCallbacks) {
|
|
nsAutoMicroTask mt;
|
|
if (holder.HasWebIDLCallback()) {
|
|
ErrorResult ignored;
|
|
holder.GetWebIDLCallback()->Call(timeStamp, ignored);
|
|
} else {
|
|
holder.GetXPCOMCallback()->Sample(eventTime);
|
|
}
|
|
}
|
|
}
|
|
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.
|
|
|
|
RunFrameRequestCallbacks(aNowEpoch, 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.
|
|
if (mPresContext && mPresContext->GetPresShell()) {
|
|
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);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// 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());
|
|
mRequests.EnumerateEntries(nsRefreshDriver::ImageRequestEnumerator,
|
|
&imagesToRefresh);
|
|
|
|
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
|
|
docShell->AddProfileTimelineMarker("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) {
|
|
docShell->AddProfileTimelineMarker("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
|
|
|
|
for (nsAPostRefreshObserver* postRefreshObserver: mPostRefreshObservers) {
|
|
postRefreshObserver->DidRefresh();
|
|
}
|
|
|
|
NS_ASSERTION(mInRefresh, "Still in refresh");
|
|
}
|
|
|
|
/* static */ PLDHashOperator
|
|
nsRefreshDriver::ImageRequestEnumerator(nsISupportsHashKey* aEntry,
|
|
void* aUserArg)
|
|
{
|
|
nsCOMArray<imgIContainer>* imagesToRefresh =
|
|
static_cast<nsCOMArray<imgIContainer>*> (aUserArg);
|
|
imgIRequest* req = static_cast<imgIRequest*>(aEntry->GetKey());
|
|
MOZ_ASSERT(req, "Unable to retrieve the image request");
|
|
nsCOMPtr<imgIContainer> image;
|
|
if (NS_SUCCEEDED(req->GetImage(getter_AddRefs(image)))) {
|
|
imagesToRefresh->AppendElement(image);
|
|
}
|
|
|
|
return PL_DHASH_NEXT;
|
|
}
|
|
|
|
/* static */ PLDHashOperator
|
|
nsRefreshDriver::BeginRefreshingImages(nsISupportsHashKey* aEntry,
|
|
void* aUserArg)
|
|
{
|
|
ImageRequestParameters* parms =
|
|
static_cast<ImageRequestParameters*> (aUserArg);
|
|
|
|
imgIRequest* req = static_cast<imgIRequest*>(aEntry->GetKey());
|
|
MOZ_ASSERT(req, "Unable to retrieve the image request");
|
|
|
|
parms->mRequests->PutEntry(req);
|
|
|
|
nsCOMPtr<imgIContainer> image;
|
|
if (NS_SUCCEEDED(req->GetImage(getter_AddRefs(image)))) {
|
|
image->SetAnimationStartTime(parms->mDesired);
|
|
}
|
|
|
|
return PL_DHASH_REMOVE;
|
|
}
|
|
|
|
/* 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);
|
|
aData->mEntries.EnumerateEntries(nsRefreshDriver::BeginRefreshingImages, 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;
|
|
aData->mEntries.EnumerateEntries(nsRefreshDriver::BeginRefreshingImages, 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.
|
|
}
|
|
|
|
#undef LOG
|