1773339 - Use TaskController directly for off-thread JS parsing

Status: NEW

(Core :: JavaScript Engine, task, P2)

Description

[Ted Campbell [:tcampbell]]

While off-thread parsing currently uses Task Controller background threads, the dispatch queue and OffThreadToken is still managed by spidermonkey. This is a blackbox to our other Task scheduling efforts so we should avoid the extra steps and try to use TaskController directly.

Comment 1

[Bryan Thrall [:bthrall]]

Attachment: WIP: Bug 1773339 - Make cx parameter to CompileGlobalScriptToStencilAndMaybeInstantiate optional

Comment 2

[Bryan Thrall [:bthrall]]

Attachment: WIP: Bug 1773339 - Intro API to create/destroy FrontendContext, AsyncScriptParse

Need to fill out jsapi-test for more details and use cases.

AsyncParseGlobalScript() has a stackLimit parameter because I don't expect to
know what the limit for the TaskController task is, or even that the function
is being run by TaskController.

Depends on D167460

Comment 3

[Phabricator Automation]

Comment on attachment 9313378 [details]
WIP: Bug 1773339 - Make cx parameter to CompileGlobalScriptToStencilAndMaybeInstantiate optional

Revision D167460 was moved to bug 1773319. Setting attachment 9313378 [details] to obsolete.

Comment 4

[Phabricator Automation]

Comment on attachment 9313379 [details]
WIP: Bug 1773339 - Intro API to create/destroy FrontendContext, AsyncScriptParse

Revision D167461 was moved to bug 1773319. Setting attachment 9313379 [details] to obsolete.