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worker: fix broadcast channel SharedArrayBuffer passing #36501

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Make sure that SharedArrayBuffers can be deserialized on multiple
receiving ends. As a drive-by, also fix the condition of the
internal assertion that should occur if there are transferables
passed to multiple destinations.

Checklist
  • make -j4 test (UNIX), or vcbuild test (Windows) passes
  • tests and/or benchmarks are included
  • commit message follows commit guidelines

Make sure that `SharedArrayBuffer`s can be deserialized on multiple
receiving ends. As a drive-by, also fix the condition of the
internal assertion that should occur if there are transferables
passed to multiple destinations.
@nodejs-github-bot nodejs-github-bot added the c++ Issues and PRs that require attention from people who are familiar with C++. label Dec 13, 2020
@addaleax addaleax added request-ci Add this label to start a Jenkins CI on a PR. worker Issues and PRs related to Worker support. c++ Issues and PRs that require attention from people who are familiar with C++. and removed c++ Issues and PRs that require attention from people who are familiar with C++. labels Dec 13, 2020
@addaleax addaleax added the fast-track PRs that do not need to wait for 48 hours to land. label Dec 13, 2020
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Feel free to 👍 this comment if you think it’s fast-track-worthy.

@github-actions github-actions bot removed the request-ci Add this label to start a Jenkins CI on a PR. label Dec 13, 2020
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@jasnell jasnell added the commit-queue Add this label to land a pull request using GitHub Actions. label Dec 14, 2020
addaleax added a commit that referenced this pull request Dec 14, 2020
Make sure that `SharedArrayBuffer`s can be deserialized on multiple
receiving ends. As a drive-by, also fix the condition of the
internal assertion that should occur if there are transferables
passed to multiple destinations.

PR-URL: #36501
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: James M Snell <jasnell@gmail.com>
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Landed in 67643e1

@addaleax addaleax closed this Dec 14, 2020
@addaleax addaleax deleted the broadcast-channel-fixes branch December 14, 2020 15:51
@jasnell jasnell removed the commit-queue Add this label to land a pull request using GitHub Actions. label Dec 14, 2020
targos pushed a commit that referenced this pull request Dec 21, 2020
Make sure that `SharedArrayBuffer`s can be deserialized on multiple
receiving ends. As a drive-by, also fix the condition of the
internal assertion that should occur if there are transferables
passed to multiple destinations.

PR-URL: #36501
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: James M Snell <jasnell@gmail.com>
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