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Expensive Headers
Jer Noble edited this page Nov 21, 2024
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This page contains a list of the most "expensive" headers (in terms of CPU time spent compiling said headers) in various projects within WebKit. This data was generated by clang -ftime and collated for analysis by ClangBuildAnalyzer, per the instructions at Analyzing Build Performance.
Current data is as of 286806@main.
502341 ms: Source/JavaScriptCore/assembler/MacroAssembler.h (included 192 times, avg 2616 ms),
438444 ms: WebKitBuild/Debug/usr/local/include/wtf/TZoneMallocInlines.h (included 197 times, avg 2225 ms),
422620 ms: Source/JavaScriptCore/jit/GPRInfo.h (included 191 times, avg 2212 ms),
405073 ms: Source/JavaScriptCore/bytecode/CodeBlock.h (included 183 times, avg 2213 ms),
154080 ms: Source/JavaScriptCore/runtime/JSCJSValueInlines.h (included 124 times, avg 1242 ms),
152987 ms: Source/JavaScriptCore/runtime/JSCellInlines.h (included 122 times, avg 1253 ms),
128285 ms: runtime/JSCJSValueInlines.h (included 43 times, avg 2983 ms),
125909 ms: runtime/JSCellInlines.h (included 45 times, avg 2797 ms),
89080 ms: runtime/JSCInlines.h (included 46 times, avg 1936 ms),
73444 ms: Source/JavaScriptCore/jit/CCallHelpers.h (included 185 times, avg 396 ms),
66482 ms: dfg/DFGGraph.h (included 17 times, avg 3910 ms),
58092 ms: Source/JavaScriptCore/runtime/VM.h (included 159 times, avg 365 ms),
56015 ms: WebKitBuild/Debug/DerivedSources/JavaScriptCore/BytecodeStructs.h (included 55 times, avg 1018 ms),
51717 ms: WebKitBuild/Debug/usr/local/include/wtf/Threading.h (included 204 times, avg 253 ms),
51053 ms: Source/JavaScriptCore/runtime/JSGlobalObject.h (included 185 times, avg 275 ms),
43351 ms: Source/JavaScriptCore/bytecode/ArrayProfile.h (included 183 times, avg 236 ms),
42300 ms: Source/JavaScriptCore/wasm/WasmFormat.h (included 94 times, avg 450 ms),
42251 ms: Source/JavaScriptCore/dfg/DFGGraph.h (included 11 times, avg 3841 ms),
42181 ms: runtime/JSObject.h (included 41 times, avg 1028 ms),
41432 ms: Source/JavaScriptCore/runtime/JSCInlines.h (included 73 times, avg 567 ms),
1419637 ms: WebKitBuild/Debug/usr/local/include/wtf/TZoneMallocInlines.h (included 638 times, avg 2225 ms),
762867 ms: Source/WebCore/platform/graphics/GraphicsLayer.h (included 408 times, avg 1869 ms),
565489 ms: Source/WebCore/platform/graphics/ImageBuffer.h (included 401 times, avg 1410 ms),
556430 ms: Source/WebCore/dom/Document.h (included 478 times, avg 1164 ms),
458306 ms: Source/WebCore/dom/ScriptExecutionContext.h (included 515 times, avg 889 ms),
444062 ms: WebKitBuild/Debug/JavaScriptCore.framework/PrivateHeaders/StructureInlines.h (included 282 times, avg 1574 ms),
403028 ms: WebKitBuild/Debug/JavaScriptCore.framework/PrivateHeaders/JSCJSValueInlines.h (included 282 times, avg 1429 ms),
398449 ms: Source/WebCore/dom/ContextDestructionObserverInlines.h (included 431 times, avg 924 ms),
388783 ms: Source/WebCore/css/calc/CSSCalcTree.h (included 474 times, avg 820 ms),
384725 ms: Source/WebCore/dom/Element.h (included 468 times, avg 822 ms),
375045 ms: WebKitBuild/Debug/JavaScriptCore.framework/PrivateHeaders/JSCellInlines.h (included 282 times, avg 1329 ms),
333410 ms: Source/WebCore/dom/DocumentInlines.h (included 241 times, avg 1383 ms),
315638 ms: Source/WebCore/page/LocalDOMWindow.h (included 286 times, avg 1103 ms),
304862 ms: Source/WebCore/html/ImageBitmap.h (included 300 times, avg 1016 ms),
277095 ms: Source/WebCore/platform/calc/CalculationTree.h (included 475 times, avg 583 ms),
274959 ms: Source/WebCore/platform/animation/AcceleratedEffect.h (included 410 times, avg 670 ms),
267125 ms: Source/WebCore/platform/animation/AcceleratedEffectStack.h (included 409 times, avg 653 ms),
261066 ms: Source/WebCore/platform/graphics/GraphicsContext.h (included 248 times, avg 1052 ms),
241461 ms: Source/WebCore/dom/ElementInlines.h (included 195 times, avg 1238 ms),
233423 ms: Source/WebCore/rendering/RenderObject.h (included 431 times, avg 541 ms),
1055189 ms: WebKitBuild/Debug/usr/local/include/wtf/TZoneMallocInlines.h (included 474 times, avg 2226 ms),
761246 ms: Source/WebKit/WebProcess/WebPage/WebPage.h (included 193 times, avg 3944 ms),
590937 ms: Source/WebKit/WebProcess/Extensions/Bindings/JSWebExtensionWrapper.h (included 70 times, avg 8441 ms),
579494 ms: Source/WebKit/UIProcess/Extensions/WebExtensionContext.h (included 171 times, avg 3388 ms),
562338 ms: WebKitBuild/Debug/WebCore.framework/PrivateHeaders/ChromeClient.h (included 194 times, avg 2898 ms),
524019 ms: Source/WebKit/UIProcess/Extensions/WebExtensionController.h (included 171 times, avg 3064 ms),
518556 ms: WebKitBuild/Debug/WebCore.framework/PrivateHeaders/AXObjectCache.h (included 197 times, avg 2632 ms),
461350 ms: Source/WebKit/Shared/PolicyDecision.h (included 269 times, avg 1715 ms),
456843 ms: WebKitBuild/Debug/WebCore.framework/PrivateHeaders/TextIterator.h (included 199 times, avg 2295 ms),
411004 ms: Source/WebKit/UIProcess/WebProcessProxy.h (included 232 times, avg 1771 ms),
282050 ms: Source/WebKit/UIProcess/WebsiteData/WebsiteDataStore.h (included 238 times, avg 1185 ms),
279881 ms: Source/WebKit/UIProcess/WebURLSchemeTask.h (included 183 times, avg 1529 ms),
279051 ms: Source/WebKit/UIProcess/API/APIPageConfiguration.h (included 180 times, avg 1550 ms),
275480 ms: Source/WebKit/WebProcess/WebPage/WebFrame.h (included 183 times, avg 1505 ms),
265174 ms: Source/WebKit/Shared/Extensions/WebExtensionFrameIdentifier.h (included 171 times, avg 1550 ms),
243386 ms: Source/WebKit/UIProcess/Network/NetworkProcessProxy.h (included 235 times, avg 1035 ms),
240960 ms: Source/WebKit/Shared/WebsitePoliciesData.h (included 279 times, avg 863 ms),
237091 ms: WebKitBuild/Debug/WebCore.framework/PrivateHeaders/DocumentLoader.h (included 280 times, avg 846 ms),
212779 ms: WebKitBuild/Debug/WebCore.framework/PrivateHeaders/GraphicsLayer.h (included 249 times, avg 854 ms),
210852 ms: Source/WebKit/Platform/IPC/JSIPCBinding.h (included 121 times, avg 1742 ms),