Bug 244825 - Allow running IPC::Connection with an 'owning' thread that isn't the main thread
Summary: Allow running IPC::Connection with an 'owning' thread that isn't the main thread
Status: RESOLVED FIXED
Alias: None
Product: WebKit
Classification: Unclassified
Component: Platform (show other bugs)
Version: WebKit Nightly Build
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Matt Woodrow
URL:
Keywords: InRadar
Depends on: 245475 246305 246308
Blocks: 218482 244828
  Show dependency tree / graph
 
Reported: 2022-09-05 21:09 PDT by Matt Woodrow
Modified: 2022-10-22 02:06 PDT (History)
1 user (show)

See Also:

Attachments
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description Matt Woodrow 2022-09-05 21:09:15 PDT 
In order to do rendering in the GPU process (for bug 218482), we require the ability to do synchronous IPC from web worker threads.

Currently, IPC::Connection supports sending asynchronous messages from any thread, but synchronous messages can only be sent from the main thread.

This allows secondary connections to be created for worker threads, and supports sending sync messages from the creation/owner thread.

For simplicity, receiving of other messages while blocked waiting for a sync message reply isn't supported in this mode.
Comment 1 Matt Woodrow 2022-09-05 21:18:33 PDT 
Pull request: https://github.com/WebKit/WebKit/pull/4043
Comment 2 Radar WebKit Bug Importer 2022-09-12 21:10:18 PDT 
<rdar://problem/99853431>
Comment 3 EWS 2022-10-22 02:06:22 PDT 
Committed 255868@main (4ba481e29602): <https://commits.webkit.org/255868@main>

Reviewed commits have been landed. Closing PR #4043 and removing active labels.