[webkit-changes] [WebKit/WebKit] 244ca6: [Xcode] Fix race condition when generating IDLFile...

[Elliott Williams]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 244ca6a14f4accdacf0f94d8c710d8587b0713b1
      https://github.com/WebKit/WebKit/commit/244ca6a14f4accdacf0f94d8c710d8587b0713b1
  Author: Elliott Williams <emw at apple.com>
  Date:   2022-10-18 (Tue, 18 Oct 2022)

  Changed paths:
    M Source/WebCore/DerivedSources-output.xcfilelist
    M Source/WebCore/DerivedSources.make

  Log Message:
  -----------
  [Xcode] Fix race condition when generating IDLFileNamesList.txt
https://bugs.webkit.org/show_bug.cgi?id=246718

Reviewed by Dean Jackson.

Change WebCore's DerivedSources.make to only generate
IDLFileNamesList.txt *once*, before any invocations of
preprocess-idls.pl. This fixes a race condition where one instance of
preprocess-idls is reading the file while another Make thread is
(unnecessarily) regenerating it.

* Source/WebCore/DerivedSources-output.xcfilelist:
* Source/WebCore/DerivedSources.make:

Canonical link: https://commits.webkit.org/255709@main