[webkit-changes] [WebKit/WebKit] d7ea41: [JSC] Add activeJSGlobalObjectSignpostIntervalCount

[Yusuke Suzuki]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: d7ea41a0fe54acaa353c26e56370a6c5d8835d64
      https://github.com/WebKit/WebKit/commit/d7ea41a0fe54acaa353c26e56370a6c5d8835d64
  Author: Yusuke Suzuki <ysuzuki at apple.com>
  Date:   2023-11-16 (Thu, 16 Nov 2023)

  Changed paths:
    M Source/JavaScriptCore/runtime/JSCJSValue.h
    M Source/JavaScriptCore/runtime/JSGlobalObject.cpp

  Log Message:
  -----------
  [JSC] Add activeJSGlobalObjectSignpostIntervalCount
https://bugs.webkit.org/show_bug.cgi?id=265003
rdar://118545511

Reviewed by Mark Lam.

Add activeJSGlobalObjectSignpostIntervalCount global variable, which offers counter of active JSGlobalObject signpost intervals.
This is really useful since we can know whether we are inside signpost interval or not quickly by checking this number.

* Source/JavaScriptCore/runtime/JSGlobalObject.cpp:
(JSC::JSC_DEFINE_HOST_FUNCTION):

Canonical link: https://commits.webkit.org/270864@main