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623.txt
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623.txt
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* 仕様書
[REFS[
- [10] [CITE[ECMAScript® 2018 Language Specification]] ([TIME[2017-06-14 04:16:40 +09:00]]) <https://tc39.github.io/ecma262/#sec-sharedarraybuffer-objects>
]REFS]
* 状態
[11]
[CODE(DOMi)@en[ArrayBuffer]] と同じく、
[F(ss)[ArrayBufferData]] と [F(ss)[ArrayBufferByteLength]] を持ちます。
;; [CODE(DOMi)@en[ArrayBuffer]] を参照。
[12]
[F(ss)[ArrayBufferData]] の値は[[共有データブロック]]となります。
* 文脈
[13]
[CODE(DOMi)@en[SharedArrayBuffer]] [[コンストラクター]]に[[バイト数]]を指定することで、 ([CODE(JS)@en[AllocateSharedArrayBuffer]] により) 指定した[[長さ]]の
[CODE(DOMi)@en[SharedArrayBuffer]] の[[インスタンス]]を作成できます。
[14]
[CODE(DOMi)@en[SharedArrayBuffer]] [[オブジェクト]]の
[CODE(DOMm)@en[slice]] [[メソッド]]は、新しい
[CODE(DOMi)@en[SharedArrayBuffer]] [[オブジェクト]]を作成します。
[15]
[[構造化クローン]]により作成されることがあります。
* 演算
[16]
[[仕様書]]で使われる内部の[[演算]]として、
[[detach]] に関する
[CODE[IsDetachedBuffer]] があります。
* 歴史
[1] [CITE[ECMAScript Shared Memory and Atomics]]
([TIME[2016-12-15 08:11:14 +09:00]])
<https://tc39.github.io/ecmascript_sharedmem/shmem.html>
[2] [CITE@en[Integrate SharedArrayBuffers · Issue #2260 · whatwg/html]]
([TIME[2017-01-12 14:00:07 +09:00]])
<https://github.com/whatwg/html/issues/2260>
[3] [CITE@en[StructuredClone serialize / deserialize · Issue #935 · whatwg/html]]
([TIME[2017-03-21 18:09:44 +09:00]])
<https://github.com/whatwg/html/issues/935>
[4] [CITE@en[Do we need to mandate agents and event loops being 1:1? · Issue #2526 · whatwg/html]]
([TIME[2017-04-13 22:27:30 +09:00]])
<https://github.com/whatwg/html/issues/2526>
[5] [CITE@en[Serializing and deserializing SharedArrayBuffer]]
([[annevk]]著, [TIME[2017-04-28 16:38:26 +09:00]])
<https://github.com/whatwg/html/commit/b3f8779c76de7718bc970fdbccda18a5164d2f98>
[6] [CITE[The WHATWG Blog — HTML and shared memory]]
([TIME[2017-05-02 08:59:34 +09:00]])
<https://blog.whatwg.org/html-and-shared-memory>
[7] [CITE@en[SharedArrayBuffer + Atomics · Issue #165 · w3ctag/design-reviews]]
([TIME[2017-05-12 23:22:45 +09:00]])
<https://github.com/w3ctag/design-reviews/issues/165>
[8] [CITE@en-US[SharedArrayBuffer - JavaScript | MDN]]
([TIME[2017-05-03 20:52:18 +09:00]])
<https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/SharedArrayBuffer>
[9] [CITE@en[Add '''['''AllowShared''']''' to allow accepting SharedArrayBuffers]]
([[domenic]]著, [TIME[2017-04-29 07:10:34 +09:00]])
<https://github.com/heycam/webidl/commit/c59bdcbcf2039c89eb7ea9a35e1e2dba621519ec>
[17] [CITE[Actions required to mitigate Speculative Side-Channel Attack techniques - The Chromium Projects]]
([TIME[2018-01-09 10:37:14 +09:00]])
<https://www.chromium.org/Home/chromium-security/ssca>
[18] [CITE@en-US[Mitigating speculative execution side-channel attacks in Microsoft Edge and Internet Explorer - Microsoft Edge Dev BlogMicrosoft Edge Dev Blog]]
([TIME[2018-01-09 11:13:06 +09:00]])
<https://blogs.windows.com/msedgedev/2018/01/03/speculative-execution-mitigations-microsoft-edge-internet-explorer/>
[19] [CITE@en-US[Mitigations landing for new class of timing attack | Mozilla Security Blog]]
([TIME[2018-01-09 11:23:44 +09:00]])
<https://blog.mozilla.org/security/2018/01/03/mitigations-landing-new-class-timing-attack/>
[20] [CITE@en[Speculative execution side-channel attack ("Spectre") — Mozilla]]
([TIME[2018-01-09 11:25:44 +09:00]])
<https://www.mozilla.org/en-US/security/advisories/mfsa2018-01/>