perf: promote 42 IF-authored WPF optimizations (eval-validated) by oysteinkrog · Pull Request #4 · InitialForce/wpf

wpf-ar(iter=020, bench=geom-parser-isnumber-digit-first): reorder IsNumber digit check first

Claude (Initial Force WPF Bot)

committed

wpf-ar(iter=023, bench=geom-parser-readnumber-sign-via-token): reuse _token in ReadNumber sign check

Claude (Initial Force WPF Bot)

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wpf-ar(iter=026, bench=geom-parser-readnumber-simple-int-hoist-string): hoist _pathString and _curIndex to locals in ReadNumber simple-int loop to fold field loads

Claude (Initial Force WPF Bot)

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wpf-ar(iter=027, bench=geom-parser-skipdigits-hoist-locals): hoist _pathString/_pathLength/_curIndex to locals in SkipDigits to fold per-iter field loads (different angle from iter=021 ucmp)

Claude (Initial Force WPF Bot)

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wpf-ar(iter=006, bench=geometry-skipws-hoist-locals): hoist _pathString/_pathLength/_curIndex to locals in AbbreviatedGeometryParser.SkipWhiteSpace so the JIT folds away per-iteration field loads +…

Claude (Initial Force WPF Bot)

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wpf-ar(iter=025, bench=geometry-skipws-stash-token): stash the first non-WS char into _token from inside AbbreviatedGeometryParser.SkipWhiteSpace's default-branch exit, so callers (ReadToken, IsNum…

Claude (Initial Force WPF Bot)

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claude

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wpf-ar(iter=028, bench=cpec-inline-ccm-into-self): inline CultureAndContextManager into CulturePreservingExecutionContext itself, killing the per-Run 48 B/op CCM allocation. Targets the ~2.31% allo…

Claude (Initial Force WPF Bot)

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wpf-ar(iter=029, bench=cpec-threadstatic-pool): add a [ThreadStatic] single-element CulturePreservingExecutionContext pool drained by Capture() and refilled by Run()'s post-call epilogue, killing t…

Claude (Initial Force WPF Bot)

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PresentationCore: reuse LayoutEventList.CopyToArray buffer

Claude (Initial Force WPF Bot)

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PresentationCore: split CopyToArray to keep GetAutomationRoots reentrancy-safe

Claude (Initial Force WPF Bot)

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wpf-ar(iter=026, bench=hwndwin32-syncctx-cache-legacy-only): cache Send-priority DispatcherSynchronizationContext + compat-pref bools per Dispatcher in LegacyInvokeImpl's Send fast path — re-applie…

Claude (Initial Force WPF Bot)

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claude

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wpf-ar(iter=032, bench=geometry-streamcontext-threadstatic-pool): cache StreamGeometryCallbackContext via [ThreadStatic] so Geometry.Parse and any other StreamGeometry.Open() caller reuses one wrap…

Claude (Initial Force WPF Bot)

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wpf-ar(iter=033, bench=geometry-chunklist-singleitemlist-pool): pool the FrugalStructList<byte[]> SingleItemList store across the StreamGeometryCallbackContext [ThreadStatic] pool cycle by replacin…

Claude (Initial Force WPF Bot)

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claude

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wpf-ar(iter=034, bench=geometry-abbreviated-parser-threadstatic-pool): pool the AbbreviatedGeometryParser sealed-class instance via a per-thread [ThreadStatic] single-slot pool, mirroring iter=032'…

Claude (Initial Force WPF Bot)

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wpf-ar(iter=034, bench=geometry-skip-fillrule-default-setter): wrap `geometry.FillRule = fillRule` in `if (fillRule != FillRule.EvenOdd)` inside ParseGeometry. ParseStringToStreamGeometryContext on…

Claude (Initial Force WPF Bot)

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wpf-ar(iter=039, bench=cpec-skip-culture-setter-when-refequal): convert CulturePreservingExecutionContext.Run finally + CallbackWrapper culture writes from unconditional setter calls to ref-equals-…

Claude (Initial Force WPF Bot)

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claude

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wpf-ar(iter=045, bench=geometry-readwritedata-fits-in-chunk-fastpath): collapse ReadWriteData's main while-loop into a straight-line "fits in current chunk" fast path for the dominant small-write c…

Claude (Initial Force WPF Bot)

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claude

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wpf-ar(iter=047, bench=geometry-readnumber-singlepass-int-retry): collapse the integer fast path in AbbreviatedGeometryParser.ReadNumber from two digit walks to one — accumulate the int value durin…

Claude (Initial Force WPF Bot)

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wpf-ar(iter=049, bench=geometry-readnumber-endchar-capture-fullhoist): hoist `s/end/i` locals across the entire ReadNumber body and capture the digit-walk's terminating char into a local `endChar`,…

Claude (Initial Force WPF Bot)

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claude

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wpf-ar(iter=050, bench=geometry-aggressive-inline-skipws-isnumber): mark `More`, `SkipWhiteSpace`, `IsNumber`, and `ReadToken` in AbbreviatedGeometryParser with `[MethodImpl(MethodImplOptions.Aggre…

Claude (Initial Force WPF Bot)

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wpf-ar(iter=062, bench=excwrapper-no-handlers-fastpath-aggressive-inline): split ExceptionWrapper.TryCatchWhen into a no-handlers fast path that inlines two type-test dispatches (Action + Dispatche…

Claude (Initial Force WPF Bot)

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claude

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wpf-ar(iter=066, bench=cpec-skip-finally-restore-when-callback-untouched): add a `_callbackTouchedCulture` bool to CulturePreservingExecutionContext and gate the entire post-EC.Run finally restore …

Claude (Initial Force WPF Bot)

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perf: add Visual.TryTransformToAncestorAsMatrix internal fast path

Claude (Initial Force WPF Bot)

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claude

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perf: pool branchNodeStack via [ThreadStatic] in UIElementHelper

Claude (Initial Force WPF Bot)

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claude

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perf: pool removeList + keys snapshot in AdornerLayer.UpdateAdorner

Claude (Initial Force WPF Bot)

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claude

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perf: dirty-bit guard around AdornerLayer.UpdateAdorner walk

Claude (Initial Force WPF Bot)

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claude

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perf: AdornerLayer uses Visual.TryTransformToAncestorAsMatrix fast path

Claude (Initial Force WPF Bot)

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claude

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wpf-ar(iter=074, bench=clock-computeevents-pool-activeperiod-tic): pool the per-tick TimeIntervalCollection allocation in Clock.ComputeEvents and Clock.ComputeIntervalsWithHoldEnd via a [ThreadStat…

Claude (Initial Force WPF Bot)

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perf: empty-AdornerLayer fast path in OnLayoutUpdated

Claude (Initial Force WPF Bot)

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claude

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wpf-ar(iter=082, bench=hwndwrapper-wndproc-isincreatewindow-hoist): hoist the _isInCreateWindow field-read out of the HwndWrapper.WndProc hook iteration loop and out of the trailing CheckForCreateW…

Claude (Initial Force WPF Bot)

committed

wpf-ar(iter=086, bench=pushframeimpl-default-syncctx-reuse): reuse the per-Dispatcher cached `_defaultDispatcherSynchronizationContext` inside Dispatcher.PushFrameImpl instead of allocating a fresh…

Claude (Initial Force WPF Bot)

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wpf-ar(iter=087, bench=window-hwndstylemanager-per-window-pool): park the most-recently-disposed HwndStyleManager instance into a per-Window pool slot (Window._freedStyleManager) and reuse it on th…

Claude (Initial Force WPF Bot)

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wpf-ar(iter=089, bench=window-showdialog-enumthreadwindows-delegate-cache): isolate iter=088 piece #2 — replace the per-ShowDialog `new NativeMethods.EnumThreadWindowsCallback(ThreadWindowsCallback…

Claude (Initial Force WPF Bot)

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wpf-ar(iter=090, bench=window-showdialog-threadwindowhandles-list-pool): isolate iter=088 piece #1 — replace the per-ShowDialog `new List<IntPtr>()` allocation for `_threadWindowHandles` with a [Th…

Claude (Initial Force WPF Bot)

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wpf-ar(iter=093, bench=dispatcher-invokeimpl-priority-syncctx-cache): eliminate the per-DispatcherOperation `new DispatcherSynchronizationContext(_dispatcher, _priority)` heap allocation in `Dispat…

Claude (Initial Force WPF Bot)

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claude

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wpf-ar(iter=094, bench=priorityqueue-priorityitem-pool): pool PriorityItem<T> nodes in PriorityQueue (WindowsBase) so steady-state Dispatcher.BeginInvoke / InvokeAsync / non-Send-priority Invoke no…

Claude (Initial Force WPF Bot)

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wpf-ar(iter=095, bench=dispatcheroperationevent-tls-pool): pool the cross-thread DispatcherOperationEvent (wrapper + ManualResetEvent + 2 EventHandler delegates) via a [ThreadStatic] single-slot po…

Claude (Initial Force WPF Bot)

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wpf-ar(iter=097, bench=dispatcher-sync-invoke-action-no-asyncstate-mapping): skip the per-op `new DispatcherOperationTaskMapping(this)` allocation (~24 B/op) on the synchronous Dispatcher.Invoke(Ac…

Claude (Initial Force WPF Bot)

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claude

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wpf-perf(big-win T2-A): [ThreadStatic]-pool ByteStreamGeometryContext for owner-less GetAsPathGeometry callers

Claude (Initial Force WPF Bot)

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claude

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wpf-perf(big-win T1-#1): pool UIElement.InputHitTest infrastructure

Claude (Initial Force WPF Bot)

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claude

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Reapply "wpf-perf(big-win T1-#2): use ThousandthOfEmRealPoints/RealDoubles in non-Ideal text mode"

Claude (Initial Force WPF Bot)

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wpf-perf(big-win T4): pool AdornerLayer._zOrderMap value snapshot

Claude (Initial Force WPF Bot)

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Commits

Commits on May 12, 2026