஌ΒΕ͟ΔWebKit APIͷੈք @yashigani
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@yashigani • iOS / Mac Application Engineer • http://yashigani.hatenablog.com/ • Sleipnir for Mac / Sleipnir Mobile for iOS • ࠷ۙChrome ExtensionsσϏϡʔ͠·ͨ͠ 

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Architecture of WebKit ! ! ! WebKit API WebCore JaveScriptCore WTF 

WebKitʹ͸3छྨͷAPI͕͋Δ 

3छྨͷAPI • WebKit(WebKit 1) • Chromium WebKit(Blink) • WebKit 2 

Ͳͷϒϥ΢βʁ • Other WebKit base Browsers • Chromium / Google Chrome • Safari / Mobile Safari 

What different? 

Process Model 

WebKit 1 • ॴҦWebView/UIWebView • ϥΠϒϥϦͱͯ͠࢖͍΍͘͢ઃܭ • ϓϥοτϑΥʔϜ͝ͱʹ߹ͬͨAPI • ϨϯμϦϯάΛؚΊͯ୯ҰͷϓϩηεͰ׬݁ 

Chromium WebKit(Blink) • RendererͷͨΊͷAPI • WebKit(WebCore)Λແཧ໼ཧϚϧνϓϩηε Ͱ࢖͏ • Chromiumຊମͱ͸IPCͰ΍ΓͱΓ • JavaScriptCore -> V8 

! ! ! ! ! WebKit API WebCore Chromium (Application) Renderer (Application) IPC Chromium WebKit API Boundary Host Process Renderer Process 

WebKit 2 • WebKitࣗମʹϚϧνϓϩηεϞσϧΛಋೖ • API͕UI ProcessͱWeb Processʹ෼཭ • C API • υΩϡϝϯτ͕Ұ੾ແ͍ • ࠓͷͱ͜ΖSafariͷͨΊͷAPI 

! ! WebKit2 ! ! WebKit API(UI Process) WebCore WebKit API(Web Process) API Boundary Application UI Process Web Process 

WebKitʹ΋͍Ζ͍Ζ͋Δʂ 

·ͱΊ • WebKit = ͓͍ͦ • Chromium WebKit = ΊͬͪΌ͸΍͍ • WebKit 2 = ΊͬͪΌ͸΍͍ 

Sleipnir͕Μ͹ͬͯΔʂ 

WebKitࡶஊ • No release, No versions • WWDCΑΓલʹ࠷৽৘ใ͕Θ͔Δ(͜ͱ΋͋Δ) • Chromium Embedded Framework • node-webkit 

More info… • WebKit2 ͱ༇շͳ஥ؒͨͪ • http://steps.dodgson.org/b/2012/03/28/ webkit2-and-other-approaches/ • How WebKit Works • https://docs.google.com/presentation/d/ 1ZRIQbUKw9Tf077odCh66OrrwRIVNLvI_nhLm 2Gi__F0/pub#slide=id.p 

• WebKit Open Source Project - Technical Articles • http://www.webkit.org/coding/technical- articles.html • WebKit 2 - WebKit • http://trac.webkit.org/wiki/WebKit2 • For Developers - The Chromium Project • http://www.chromium.org/developers 

Thank you!