1662274 - Support Incremental-XDR of Stencil structures

Status: RESOLVED FIXED

(Core :: JavaScript Engine, task, P1)

Description

[Ted Campbell [:tcampbell]]

The Incremental XDR encoder has a hook that is called each time a function is delazified during execution. This hook may then transcode the delazified function so that it's bytecode can be added to the cache.

We need a similar system that transcode's the stencil instead. Note that most of the BaseScript data is already in the initial data, so we can be careful and generate only a minimal vector updates. These updates would then be captured when FinishIncrementalEncoding happens. For the stencil case we do not require the full AutoXDRTree system as a result.

Hopefully this can remain controlled by the javascript.options.useOffThreadParseGlobal pref for a little while.

Comment 1

[Tooru Fujisawa [:arai]]

stealing :)
the prototype is almost working locally.

Comment 2

[Tooru Fujisawa [:arai]]

Attachment: Bug 1662274 - Support incremental XDR encoding of stencil and merging on decode. r?tcampbell!

Depends on D90584

Comment 3

[Tooru Fujisawa [:arai]]

Attachment: Bug 1662274 - Support incremental XDR encoding of stencil. r?tcampbell!

Comment 4

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/45a9bf6ab964
Support incremental XDR encoding of stencil. r=tcampbell

Comment 5

[Bogdan Tara[:bogdan_tara | bogdant]]

https://hg.mozilla.org/mozilla-central/rev/45a9bf6ab964