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Auto merge of #16814 - asajeffrey:script-worklets, r=jdm

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Implement Houdini worklets

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This PR implements the current draft Houdini Worklets specification (https://drafts.css-houdini.org/worklets/).

The implementation is intended to provide a responsive environment for worklet execution, and in particular to ensure that the primary worklet executor does not garbage collect, and does not block loading module code. The implementation does this by providing a thread pool, and performing GC and module loading in a backup thread, not in the primary thread.

---
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- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix #16206
- [x] There are tests for these changes

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This commit is contained in:
bors-servo 2017-05-17 16:20:42 -05:00 • committed by GitHub
commit ac99a48aea
34 changed files with 1209 additions and 17 deletions
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