[webkit-changes] [WebKit/WebKit] 737376: [JSC] Use singleton WorkQueue for SignalSender

[Yusuke Suzuki]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 737376a68f94d330ed35bfa05ceaa3dd901a078f
      https://github.com/WebKit/WebKit/commit/737376a68f94d330ed35bfa05ceaa3dd901a078f
  Author: Yusuke Suzuki <ysuzuki at apple.com>
  Date:   2025-01-26 (Sun, 26 Jan 2025)

  Changed paths:
    M Source/JavaScriptCore/runtime/VMTraps.cpp
    M Source/JavaScriptCore/runtime/VMTraps.h

  Log Message:
  -----------
  [JSC] Use singleton WorkQueue for SignalSender
https://bugs.webkit.org/show_bug.cgi?id=286529
rdar://143619084

Reviewed by Mark Lam.

Let's not launch a new thread for each VM's teardown (for workers).
Use singleton WorkQueue and emit stop signals from that.

* Source/JavaScriptCore/runtime/VMTraps.cpp:
(JSC::VMTraps::willDestroyVM):
(JSC::VMTraps::fireTrap):
(JSC::VMTraps::VMTraps):
* Source/JavaScriptCore/runtime/VMTraps.h:

Canonical link: https://commits.webkit.org/289416@main



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