зеркало из https://github.com/mozilla/gecko-dev.git
Bug 1490404 - Part 2: Add retained display list statistics r=mattwoodrow
Differential Revision: https://phabricator.services.mozilla.com/D33680 --HG-- extra : moz-landing-system : lando
This commit is contained in:
Miko Mynttinen
Родитель
fbfcf25cc9
Коммит
6c57050ada
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@ -66,7 +66,7 @@ std::string Diagnostics::GetFrameOverlayString(const GPUStats& aStats) {
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gpuTimeString = nsPrintfCString("%0.1fms", mGPUDrawMs.Average()).get();
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}
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// DL = nsDisplayListBuilder
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// DL = nsDisplayListBuilder, p = partial, f = full
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// FLB = FrameLayerBuilder
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// R = ClientLayerManager::EndTransaction
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// CP = ShadowLayerForwarder::EndTransaction (txn build)
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@ -80,17 +80,10 @@ std::string Diagnostics::GetFrameOverlayString(const GPUStats& aStats) {
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"[CC] Build: %0.1fms Exec: %0.1fms GPU: %s Fill Ratio: %0.1f/%0.1f",
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mPrepareMs.Average(), mCompositeMs.Average(), gpuTimeString.c_str(),
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pixelFillRatio, screenFillRatio);
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nsCString line3;
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if (mDlb2Ms.Average() != 0.0f) {
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line3 += nsPrintfCString(
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"[Content] DL: %0.1f/%0.1fms FLB: %0.1fms Raster: %0.1fms",
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mDlb2Ms.Average(), mDlbMs.Average(), mFlbMs.Average(),
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mRasterMs.Average());
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} else {
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line3 += nsPrintfCString(
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"[Content] DL: %0.1fms FLB: %0.1fms Raster: %0.1fms", mDlbMs.Average(),
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mFlbMs.Average(), mRasterMs.Average());
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}
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nsPrintfCString line3(
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"[Content] DL p: %0.1f DL f: %0.1fms FLB: %0.1fms Raster: %0.1fms",
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mDlbMs.Average(), mDlb2Ms.Average(), mFlbMs.Average(),
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mRasterMs.Average());
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nsPrintfCString line4("[IPDL] Build: %0.1fms Send: %0.1fms Update: %0.1fms",
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mSerializeMs.Average(), mSendMs.Average(),
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mUpdateMs.Average());
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@ -3558,8 +3558,11 @@ struct TemporaryDisplayListBuilder {
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const bool aBuildCaret)
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: mBuilder(aFrame, aBuilderMode, aBuildCaret) {}
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~TemporaryDisplayListBuilder() { mList.DeleteAll(&mBuilder); }
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nsDisplayListBuilder mBuilder;
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nsDisplayList mList;
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RetainedDisplayListMetrics mMetrics;
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};
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nsresult nsLayoutUtils::PaintFrame(gfxContext* aRenderingContext,
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@ -3569,7 +3572,6 @@ nsresult nsLayoutUtils::PaintFrame(gfxContext* aRenderingContext,
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nsDisplayListBuilderMode aBuilderMode,
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PaintFrameFlags aFlags) {
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AUTO_PROFILER_LABEL("nsLayoutUtils::PaintFrame", GRAPHICS);
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typedef RetainedDisplayListBuilder::PartialUpdateResult PartialUpdateResult;
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#ifdef MOZ_DUMP_PAINTING
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if (!gPaintCountStack) {
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@ -3620,16 +3622,21 @@ nsresult nsLayoutUtils::PaintFrame(gfxContext* aRenderingContext,
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Maybe<TemporaryDisplayListBuilder> temporaryBuilder;
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nsDisplayListBuilder* builder = nullptr;
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nsDisplayList* list = nullptr;
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RetainedDisplayListMetrics* metrics = nullptr;
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if (useRetainedBuilder) {
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builder = retainedBuilder->Builder();
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list = retainedBuilder->List();
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metrics = retainedBuilder->Metrics();
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} else {
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temporaryBuilder.emplace(aFrame, aBuilderMode, buildCaret);
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builder = &temporaryBuilder->mBuilder;
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list = &temporaryBuilder->mList;
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metrics = &temporaryBuilder->mMetrics;
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}
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MOZ_ASSERT(builder && list && metrics);
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// Retained builder exists, but display list retaining is disabled.
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if (!useRetainedBuilder && retainedBuilder) {
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// Clear the modified frames lists and frame properties.
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@ -3639,6 +3646,9 @@ nsresult nsLayoutUtils::PaintFrame(gfxContext* aRenderingContext,
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retainedBuilder->List()->DeleteAll(retainedBuilder->Builder());
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}
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metrics->Reset();
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metrics->StartBuild();
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builder->BeginFrame();
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if (aFlags & PaintFrameFlags::InTransform) {
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@ -3745,8 +3755,6 @@ nsresult nsLayoutUtils::PaintFrame(gfxContext* aRenderingContext,
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AUTO_PROFILER_TRACING("Paint", "DisplayList", GRAPHICS);
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PaintTelemetry::AutoRecord record(PaintTelemetry::Metric::DisplayList);
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TimeStamp dlStart = TimeStamp::Now();
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{
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// If a scrollable container layer is created in
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// nsDisplayList::PaintForFrame, it will be the scroll parent for display
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@ -3826,28 +3834,35 @@ nsresult nsLayoutUtils::PaintFrame(gfxContext* aRenderingContext,
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if (StaticPrefs::LayoutVerifyRetainDisplayList()) {
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beforeMergeChecker.Set(list, "BM");
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}
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updateState = retainedBuilder->AttemptPartialUpdate(
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aBackstop, beforeMergeChecker ? &toBeMergedChecker : nullptr);
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if ((updateState != PartialUpdateResult::Failed) &&
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beforeMergeChecker) {
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afterMergeChecker.Set(list, "AM");
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}
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metrics->EndPartialBuild(updateState);
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} else {
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// Partial updates are disabled.
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metrics->mPartialUpdateResult = PartialUpdateResult::Failed;
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metrics->mPartialUpdateFailReason = PartialUpdateFailReason::Disabled;
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}
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if ((updateState != PartialUpdateResult::Failed) &&
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(StaticPrefs::LayoutDisplayListBuildTwice() || afterMergeChecker)) {
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updateState = PartialUpdateResult::Failed;
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if (StaticPrefs::LayersDrawFPS()) {
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if (RefPtr<LayerManager> lm = builder->GetWidgetLayerManager()) {
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if (PaintTiming* pt = ClientLayerManager::MaybeGetPaintTiming(lm)) {
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pt->dl2Ms() = (TimeStamp::Now() - dlStart).ToMilliseconds();
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}
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}
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}
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dlStart = TimeStamp::Now();
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// Rebuild the full display list if the partial display list build failed,
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// or if the merge checker is used.
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bool doFullRebuild =
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updateState == PartialUpdateResult::Failed || afterMergeChecker;
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if (StaticPrefs::LayoutDisplayListBuildTwice()) {
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// Build display list twice to compare partial and full display list
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// build times.
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metrics->StartBuild();
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doFullRebuild = true;
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}
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if (updateState == PartialUpdateResult::Failed) {
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if (doFullRebuild) {
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list->DeleteAll(builder);
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builder->ClearRetainedWindowRegions();
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@ -3860,6 +3875,8 @@ nsresult nsLayoutUtils::PaintFrame(gfxContext* aRenderingContext,
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visibleRegion, aBackstop);
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builder->LeavePresShell(aFrame, list);
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metrics->EndFullBuild();
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updateState = PartialUpdateResult::Updated;
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if (afterMergeChecker) {
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@ -3888,13 +3905,15 @@ nsresult nsLayoutUtils::PaintFrame(gfxContext* aRenderingContext,
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builder->SetIsBuilding(false);
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builder->IncrementPresShellPaintCount(presShell);
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}
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if (StaticPrefs::LayersDrawFPS()) {
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if (RefPtr<LayerManager> lm = builder->GetWidgetLayerManager()) {
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if (PaintTiming* pt = ClientLayerManager::MaybeGetPaintTiming(lm)) {
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pt->dlMs() = (TimeStamp::Now() - dlStart).ToMilliseconds();
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}
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}
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if (StaticPrefs::LayersDrawFPS()) {
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RefPtr<LayerManager> lm = builder->GetWidgetLayerManager();
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PaintTiming* pt = ClientLayerManager::MaybeGetPaintTiming(lm);
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if (pt) {
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pt->dlMs() = static_cast<float>(metrics->mPartialBuildDuration);
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pt->dl2Ms() = static_cast<float>(metrics->mFullBuildDuration);
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}
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}
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@ -4116,13 +4135,28 @@ nsresult nsLayoutUtils::PaintFrame(gfxContext* aRenderingContext,
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{
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AUTO_PROFILER_TRACING("Paint", "DisplayListResources", GRAPHICS);
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// Flush the list so we don't trigger the IsEmpty-on-destruction assertion
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if (!useRetainedBuilder) {
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list->DeleteAll(builder);
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}
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builder->EndFrame();
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if (!useRetainedBuilder) {
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temporaryBuilder.reset();
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}
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}
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#if 0
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if (XRE_IsParentProcess()) {
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if (metrics->mPartialUpdateResult == PartialUpdateResult::Failed) {
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printf("DL partial update failed: %s, Frame: %p\n",
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metrics->FailReasonString(), aFrame);
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} else {
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printf(
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"DL partial build success!"
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" new: %d, reused: %d, rebuilt: %d, removed: %d, total: %d\n",
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metrics->mNewItems, metrics->mReusedItems, metrics->mRebuiltItems,
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metrics->mRemovedItems, metrics->mTotalItems);
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}
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}
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#endif
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return NS_OK;
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}
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@ -192,6 +192,7 @@ bool RetainedDisplayListBuilder::PreProcessDisplayList(
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}
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item->Destroy(&mBuilder);
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Metrics()->mRemovedItems++;
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i++;
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aUpdated = PartialUpdateResult::Updated;
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@ -396,6 +397,7 @@ void OldItemInfo::Discard(RetainedDisplayListBuilder* aBuilder,
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if (mItem) {
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MOZ_ASSERT(mOwnsItem);
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mItem->Destroy(aBuilder->Builder());
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aBuilder->Metrics()->mRemovedItems++;
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}
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mItem = nullptr;
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}
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@ -436,6 +438,7 @@ class MergeState {
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HasModifiedFrame(aNewItem));
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if (!aNewItem->HasModifiedFrame() &&
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HasMatchingItemInOldList(aNewItem, &oldIndex)) {
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mBuilder->Metrics()->mRebuiltItems++;
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nsDisplayItem* oldItem = mOldItems[oldIndex.val].mItem;
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MOZ_DIAGNOSTIC_ASSERT(oldItem->GetPerFrameKey() ==
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aNewItem->GetPerFrameKey() &&
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@ -648,6 +651,8 @@ class MergeState {
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#endif
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mMergedItems.AppendToTop(aItem);
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mBuilder->Metrics()->mTotalItems++;
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MergedListIndex newIndex =
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mMergedDAG.AddNode(aDirectPredecessors, aExtraDirectPredecessor);
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return newIndex;
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@ -671,6 +676,7 @@ class MergeState {
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mBuilder->IncrementSubDocPresShellPaintCount(item);
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}
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item->SetReused(true);
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mBuilder->Metrics()->mReusedItems++;
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mOldItems[aNode.val].AddedToMergedList(
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AddNewNode(item, Some(aNode), aDirectPredecessors, Nothing()));
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}
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@ -813,6 +819,7 @@ bool RetainedDisplayListBuilder::MergeDisplayLists(
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Maybe<MergedListIndex> previousItemIndex;
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while (nsDisplayItem* item = aNewList->RemoveBottom()) {
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Metrics()->mNewItems++;
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previousItemIndex = merge.ProcessItemFromNewList(item, previousItemIndex);
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}
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@ -1302,11 +1309,26 @@ bool RetainedDisplayListBuilder::ComputeRebuildRegion(
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return true;
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}
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/*
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* A simple early exit heuristic to avoid slow partial display list rebuilds.
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*/
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static bool ShouldBuildPartial(nsTArray<nsIFrame*>& aModifiedFrames) {
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bool RetainedDisplayListBuilder::ShouldBuildPartial(
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nsTArray<nsIFrame*>& aModifiedFrames) {
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if (mList.IsEmpty()) {
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// Partial builds without a previous display list do not make sense.
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Metrics()->mPartialUpdateFailReason = PartialUpdateFailReason::EmptyList;
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return false;
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}
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if (aModifiedFrames.Length() > StaticPrefs::LayoutRebuildFrameLimit()) {
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// Computing a dirty rect with too many modified frames can be slow.
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Metrics()->mPartialUpdateFailReason = PartialUpdateFailReason::RebuildLimit;
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return false;
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}
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// We don't support retaining with overlay scrollbars, since they require
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// us to look at the display list and pick the highest z-index, which
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// we can't do during partial building.
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if (mBuilder.DisablePartialUpdates()) {
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mBuilder.SetDisablePartialUpdates(false);
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Metrics()->mPartialUpdateFailReason = PartialUpdateFailReason::Disabled;
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return false;
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}
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@ -1324,6 +1346,7 @@ static bool ShouldBuildPartial(nsTArray<nsIFrame*>& aModifiedFrames) {
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if (type == LayoutFrameType::Viewport ||
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type == LayoutFrameType::PageContent ||
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type == LayoutFrameType::Canvas || type == LayoutFrameType::Scrollbar) {
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Metrics()->mPartialUpdateFailReason = PartialUpdateFailReason::FrameType;
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return false;
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}
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}
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@ -1331,6 +1354,26 @@ static bool ShouldBuildPartial(nsTArray<nsIFrame*>& aModifiedFrames) {
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return true;
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}
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void RetainedDisplayListBuilder::InvalidateCaretFramesIfNeeded(
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nsTArray<nsIFrame*>& aModifiedFrames) {
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if (mPreviousCaret == mBuilder.GetCaretFrame()) {
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// The current caret frame is the same as the previous one.
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return;
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}
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if (mPreviousCaret &&
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mBuilder.MarkFrameModifiedDuringBuilding(mPreviousCaret)) {
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aModifiedFrames.AppendElement(mPreviousCaret);
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}
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if (mBuilder.GetCaretFrame() &&
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mBuilder.MarkFrameModifiedDuringBuilding(mBuilder.GetCaretFrame())) {
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aModifiedFrames.AppendElement(mBuilder.GetCaretFrame());
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}
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mPreviousCaret = mBuilder.GetCaretFrame();
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}
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static void ClearFrameProps(nsTArray<nsIFrame*>& aFrames) {
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for (nsIFrame* f : aFrames) {
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if (f->HasOverrideDirtyRegion()) {
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@ -1347,13 +1390,10 @@ static void ClearFrameProps(nsTArray<nsIFrame*>& aFrames) {
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class AutoClearFramePropsArray {
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public:
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explicit AutoClearFramePropsArray(size_t aCapacity) : mFrames(aCapacity) {}
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AutoClearFramePropsArray() = default;
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~AutoClearFramePropsArray() { ClearFrameProps(mFrames); }
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nsTArray<nsIFrame*>& Frames() { return mFrames; }
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bool IsEmpty() const { return mFrames.IsEmpty(); }
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private:
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@ -1367,9 +1407,8 @@ void RetainedDisplayListBuilder::ClearFramesWithProps() {
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&framesWithProps.Frames());
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}
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auto RetainedDisplayListBuilder::AttemptPartialUpdate(
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nscolor aBackstop, mozilla::DisplayListChecker* aChecker)
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-> PartialUpdateResult {
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PartialUpdateResult RetainedDisplayListBuilder::AttemptPartialUpdate(
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nscolor aBackstop, mozilla::DisplayListChecker* aChecker) {
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mBuilder.RemoveModifiedWindowRegions();
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mBuilder.ClearWindowOpaqueRegion();
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@ -1387,33 +1426,11 @@ auto RetainedDisplayListBuilder::AttemptPartialUpdate(
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GetModifiedAndFramesWithProps(&mBuilder, &modifiedFrames.Frames(),
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&framesWithProps.Frames());
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// Do not allow partial builds if the retained display list is empty, or if
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// ShouldBuildPartial heuristic fails.
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bool shouldBuildPartial =
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!mList.IsEmpty() && ShouldBuildPartial(modifiedFrames.Frames());
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// Do not allow partial builds if the |ShouldBuildPartial()| heuristic fails.
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bool shouldBuildPartial = ShouldBuildPartial(modifiedFrames.Frames());
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// We don't support retaining with overlay scrollbars, since they require
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// us to look at the display list and pick the highest z-index, which
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// we can't do during partial building.
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if (mBuilder.DisablePartialUpdates()) {
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shouldBuildPartial = false;
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mBuilder.SetDisablePartialUpdates(false);
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}
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if (mPreviousCaret != mBuilder.GetCaretFrame()) {
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if (mPreviousCaret) {
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if (mBuilder.MarkFrameModifiedDuringBuilding(mPreviousCaret)) {
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modifiedFrames.Frames().AppendElement(mPreviousCaret);
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}
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}
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if (mBuilder.GetCaretFrame()) {
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if (mBuilder.MarkFrameModifiedDuringBuilding(mBuilder.GetCaretFrame())) {
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modifiedFrames.Frames().AppendElement(mBuilder.GetCaretFrame());
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}
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}
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mPreviousCaret = mBuilder.GetCaretFrame();
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if (shouldBuildPartial) {
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InvalidateCaretFramesIfNeeded(modifiedFrames.Frames());
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}
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nsRect modifiedDirty;
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@ -1465,6 +1482,7 @@ auto RetainedDisplayListBuilder::AttemptPartialUpdate(
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mBuilder.LeavePresShell(mBuilder.RootReferenceFrame(), nullptr);
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mList.DeleteAll(&mBuilder);
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modifiedDL.DeleteAll(&mBuilder);
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Metrics()->mPartialUpdateFailReason = PartialUpdateFailReason::Content;
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return PartialUpdateResult::Failed;
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}
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@ -92,6 +92,77 @@ RetainedDisplayListData* GetRetainedDisplayListData(nsIFrame* aRootFrame);
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*/
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RetainedDisplayListData* GetOrSetRetainedDisplayListData(nsIFrame* aRootFrame);
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enum class PartialUpdateResult { Failed, NoChange, Updated };
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enum class PartialUpdateFailReason {
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NA,
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EmptyList,
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RebuildLimit,
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FrameType,
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Disabled,
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Content
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};
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struct RetainedDisplayListMetrics {
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RetainedDisplayListMetrics() { Reset(); }
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void Reset() {
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mNewItems = 0;
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mRebuiltItems = 0;
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mRemovedItems = 0;
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mReusedItems = 0;
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mTotalItems = 0;
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mPartialBuildDuration = 0;
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mFullBuildDuration = 0;
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mPartialUpdateFailReason = PartialUpdateFailReason::NA;
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mPartialUpdateResult = PartialUpdateResult::NoChange;
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}
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void StartBuild() { mStartTime = mozilla::TimeStamp::Now(); }
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void EndFullBuild() { mFullBuildDuration = Elapsed(); }
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void EndPartialBuild(PartialUpdateResult aResult) {
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mPartialBuildDuration = Elapsed();
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mPartialUpdateResult = aResult;
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}
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double Elapsed() {
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return (mozilla::TimeStamp::Now() - mStartTime).ToMilliseconds();
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}
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const char* FailReasonString() const {
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switch (mPartialUpdateFailReason) {
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case PartialUpdateFailReason::NA:
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return "N/A";
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case PartialUpdateFailReason::EmptyList:
|
||||
return "Empty list";
|
||||
case PartialUpdateFailReason::RebuildLimit:
|
||||
return "Rebuild limit";
|
||||
case PartialUpdateFailReason::FrameType:
|
||||
return "Frame type";
|
||||
case PartialUpdateFailReason::Disabled:
|
||||
return "Disabled";
|
||||
case PartialUpdateFailReason::Content:
|
||||
return "Content";
|
||||
default:
|
||||
MOZ_ASSERT_UNREACHABLE("Enum value not handled!");
|
||||
}
|
||||
}
|
||||
|
||||
unsigned int mNewItems;
|
||||
unsigned int mRebuiltItems;
|
||||
unsigned int mRemovedItems;
|
||||
unsigned int mReusedItems;
|
||||
unsigned int mTotalItems;
|
||||
|
||||
mozilla::TimeStamp mStartTime;
|
||||
double mPartialBuildDuration;
|
||||
double mFullBuildDuration;
|
||||
PartialUpdateFailReason mPartialUpdateFailReason;
|
||||
PartialUpdateResult mPartialUpdateResult;
|
||||
};
|
||||
|
||||
struct RetainedDisplayListBuilder {
|
||||
RetainedDisplayListBuilder(nsIFrame* aReferenceFrame,
|
||||
nsDisplayListBuilderMode aMode, bool aBuildCaret)
|
||||
|
|
@ -102,7 +173,7 @@ struct RetainedDisplayListBuilder {
|
|||
|
||||
nsDisplayList* List() { return &mList; }
|
||||
|
||||
enum class PartialUpdateResult { Failed, NoChange, Updated };
|
||||
RetainedDisplayListMetrics* Metrics() { return &mMetrics; }
|
||||
|
||||
PartialUpdateResult AttemptPartialUpdate(
|
||||
nscolor aBackstop, mozilla::DisplayListChecker* aChecker);
|
||||
|
|
@ -118,6 +189,19 @@ struct RetainedDisplayListBuilder {
|
|||
NS_DECLARE_FRAME_PROPERTY_DELETABLE(Cached, RetainedDisplayListBuilder)
|
||||
|
||||
private:
|
||||
void IncrementSubDocPresShellPaintCount(nsDisplayItem* aItem);
|
||||
|
||||
/**
|
||||
* Invalidates the current and previous caret frame if they have changed.
|
||||
*/
|
||||
void InvalidateCaretFramesIfNeeded(nsTArray<nsIFrame*>& aModifiedFrames);
|
||||
|
||||
/**
|
||||
* A simple early exit heuristic to avoid slow partial display list rebuilds.
|
||||
* Returns true if a partial display list build should be attempted.
|
||||
*/
|
||||
bool ShouldBuildPartial(nsTArray<nsIFrame*>& aModifiedFrames);
|
||||
|
||||
/**
|
||||
* Recursively pre-processes the old display list tree before building the
|
||||
* new partial display lists, and serializes the old list into an array,
|
||||
|
|
@ -156,19 +240,19 @@ struct RetainedDisplayListBuilder {
|
|||
nsRect* aOutDirty,
|
||||
AnimatedGeometryRoot** aOutModifiedAGR,
|
||||
nsTArray<nsIFrame*>& aOutFramesWithProps);
|
||||
|
||||
bool ProcessFrame(nsIFrame* aFrame, nsDisplayListBuilder* aBuilder,
|
||||
nsIFrame* aStopAtFrame,
|
||||
nsTArray<nsIFrame*>& aOutFramesWithProps,
|
||||
const bool aStopAtStackingContext, nsRect* aOutDirty,
|
||||
AnimatedGeometryRoot** aOutModifiedAGR);
|
||||
|
||||
void IncrementSubDocPresShellPaintCount(nsDisplayItem* aItem);
|
||||
|
||||
friend class MergeState;
|
||||
|
||||
nsDisplayListBuilder mBuilder;
|
||||
RetainedDisplayList mList;
|
||||
WeakFrame mPreviousCaret;
|
||||
RetainedDisplayListMetrics mMetrics;
|
||||
};
|
||||
|
||||
#endif // RETAINEDDISPLAYLISTBUILDER_H_
|
||||
|
|
|
|||
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