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[worklets] Update global object allocation #998

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Aug 5, 2020
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[worklets] Update global object allocation #998

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73 changes: 29 additions & 44 deletions worklets/Overview.bs
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Original file line number Diff line number Diff line change
Expand Up @@ -30,12 +30,9 @@ Editor: Ian Kilpatrick, [email protected], w3cid 73001
spec:fetch; type:dfn; for:/; text:fetch
spec:html; type:dfn; for:/; text:browsing context
spec:html; type:interface; for:/; text:Document
spec:html; type:dfn; for:environment settings object;
text: global object
text: https state
text: referrer policy
spec:html; type:dfn; for:environment; text:id
spec:webidl; type:dfn; for:interface; text:inherit
spec:url; type:dfn; text:url; for:url
spec:html; type:dfn; for:/; text:event loop
</pre>

<pre class="anchors">
Expand Down Expand Up @@ -65,10 +62,6 @@ urlPrefix: http://www.ecma-international.org/ecma-262/6.0/#sec-; type: dfn;
text: Invoke
text: strict mode code
</pre>
<pre class="link-defaults">
spec:url; type:dfn; text:url; for:url
spec:webidl; type:dfn; for:interface; text:inherit
</pre>

Introduction {#intro}
=====================
Expand Down Expand Up @@ -233,14 +226,12 @@ When a user agent is to <dfn export>create a WorkletGlobalScope</dfn>, given |wo
3. Let |insideSettings| be the result of <a>set up a worklet environment settings object</a>
given |realmExecutionContext|, and |outsideSettings|.

4. Associate the |insideSettings| with |workletGlobalScope|.

5. Set |workletGlobalScope|'s <a>owner document</a> to |outsideSettings|'s <a>responsible
4. Set |workletGlobalScope|'s <a>owner document</a> to |outsideSettings|'s <a>responsible
document</a>.

6. Invoke the <a>initialize a global object's CSP list</a> algorithm given |workletGlobalScope|.
5. Invoke the <a>initialize a global object's CSP list</a> algorithm given |workletGlobalScope|.

7. For each |entry| in the given |moduleResponsesMap| (in insertion order), run the following
6. For each |entry| in the given |moduleResponsesMap| (in insertion order), run the following
substeps:

1. Let |moduleURLRecord| be |entry|'s key.
Expand All @@ -264,61 +255,55 @@ When a user agent is to <dfn export>create a WorkletGlobalScope</dfn>, given |wo
<div algorithm>
When a user agent is to <dfn export>set up a worklet environment settings object</dfn>, given a
|executionContext|, and |outsideSettings|, it must run the following steps:
1. Let |inheritedResponsibleBrowsingContext| be |outsideSettings|'s <a>responsible browsing
context</a>.
1. Let |origin| be a unique <a>opaque origin</a>.

2. Let |inheritedAPIBaseURL| be |outsideSettings|'s <a>API base URL</a>.

3. Let |origin| be a unique <a>opaque origin</a>.
3. Let |inheritedReferrerPolicy| be |outsideSettings|'s <a for="environment settings object">referrer policy</a>.

4. Let |inheritedHTTPSState| be |outsideSettings|'s <a>HTTPS state</a>.
4. Let |inheritedEmbedderPolicy| be |outsideSettings|'s <a for="environment settings object">embedder policy</a>.

5. Let |inheritedReferrerPolicy| be |outsideSettings|'s <a>referrer policy</a>.
5. Let |realm| be the value of |executionContext|'s Realm component.

6. Let |realm| be the value of |executionContext|'s Realm component.
6. Let |workletGlobalScope| be |realm|'s <a for=Realm>global object</a>.

7. Let |workletGlobalScope| be |realm|'s <a>global object</a>.

8. Let |settingsObject| be a new <a>environment settings object</a> whose algorithms are defined
7. Let |settingsObject| be a new <a>environment settings object</a> whose algorithms are defined
as follows:

: The <a>realm execution context</a>
: The <a for="environment settings object">realm execution context</a>
:: Return |executionContext|.

: The <a>module map</a>.
: The <a for="environment settings object">module map</a>.
:: Return |workletGlobalScope|'s <a for=WorkletGlobalScope>module map</a>.

: The <a>responsible browsing context</a>
:: Return |inheritedResponsibleBrowsingContext|.

: The <a>responsible document</a>
:: Not applicable (the <a>responsible event loop</a> is not a <a>window event loop</a>).
: The <a for="environment settings object">responsible document</a>
:: Not applicable.

: The <a>API URL character encoding</a>
: The <a for="environment settings object">API URL character encoding</a>
:: Return <a>UTF-8</a>.

: The <a>API base URL</a>
: The <a for="environment settings object">API base URL</a>
:: Return |inheritedAPIBaseURL|.

: The <a for="environment settings object">origin</a>
:: Return |origin|.

: The <a for="environment settings object">top-level origin</a>
:: Return |outsideSettings|'s <a for="environment settings object">top-level origin</a>.

: The <a>HTTPS state</a>
:: Return |inheritedHTTPSState|.

: The <a>referrer policy</a>
: The <a for="environment settings object">referrer policy</a>
:: Return |inheritedReferrerPolicy|.

9. Set |settingsObject|'s <a>id</a> to a new unique opaque string, |settingsObject|'s
<a>creation URL</a> to |inheritedAPIBaseURL|, |settingsObject|'s <a>target browsing
context</a> to null, and |settingsObject|'s <a>active service worker</a> to null.
: The <a for="environment settings object">embedder policy</a>
:: Return |inheritedEmbedderPolicy|.

8. Set |settingsObject|'s <a for=environment>id</a> to a new unique opaque string,
<a for=environment>creation URL</a> to |inheritedAPIBaseURL|,
<a for=environment>top-level creation URL</a> to null,
<a for=environment>top-level origin</a> to |outsideSettings|'s <a for=environment>top-level origin</a>,
<a for=environment>target browsing context</a> to null, and
<a for=environment>active service worker</a> to null.

10. Set |realm|'s \[[HostDefined]] field to |settingsObject|.
9. Set |realm|'s \[[HostDefined]] field to |settingsObject|.

11. Return |settingsObject|.
10. Return |settingsObject|.
</div>

Issue: Merge this with https://html.spec.whatwg.org/multipage/workers.html#set-up-a-worker-environment-settings-object
Expand Down