[webkit-changes] [WebKit/WebKit] c655ab: [macOS] Prevent WebContent Process from Jetsam

[Miguel Salinas]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: c655abc1dd4a00c5e635e85d94ef66050108bfd1
      https://github.com/WebKit/WebKit/commit/c655abc1dd4a00c5e635e85d94ef66050108bfd1
  Author: Miguel Salinas <miguel_salinas at apple.com>
  Date:   2023-03-23 (Thu, 23 Mar 2023)

  Changed paths:
    M Source/WTF/wtf/PlatformUse.h
    M Source/WebKit/UIProcess/AuxiliaryProcessProxy.cpp
    M Source/WebKit/UIProcess/AuxiliaryProcessProxy.h
    M Source/WebKit/UIProcess/Cocoa/ProcessAssertionCocoa.mm
    M Source/WebKit/UIProcess/ProcessAssertion.cpp
    M Source/WebKit/UIProcess/ProcessAssertion.h
    M Source/WebKit/UIProcess/ProcessThrottler.cpp

  Log Message:
  -----------
  [macOS] Prevent WebContent Process from Jetsam
https://bugs.webkit.org/show_bug.cgi?id=254338
rdar://106721207

Reviewed by Chris Dumez.

We need to hold a new runningboard process assertion "BoostedJetsam" to
maintain a jetsam band of at least 40 at all times, including suspension
to prevent process from being killed on macOS.

* Source/WTF/wtf/PlatformUse.h:
* Source/WebKit/UIProcess/AuxiliaryProcessProxy.cpp:
(WebKit::AuxiliaryProcessProxy::didFinishLaunching):
* Source/WebKit/UIProcess/AuxiliaryProcessProxy.h:
* Source/WebKit/UIProcess/Cocoa/ProcessAssertionCocoa.mm:
(WebKit::runningBoardNameForAssertionType):
(WebKit::runningBoardDomainForAssertionType):
* Source/WebKit/UIProcess/ProcessAssertion.cpp:
(WebKit::processAssertionTypeDescription):
* Source/WebKit/UIProcess/ProcessAssertion.h:
* Source/WebKit/UIProcess/ProcessThrottler.cpp:
(WebKit::ProcessThrottler::assertionName const):

Canonical link: https://commits.webkit.org/262025@main