[Webkit-unassigned] [Bug 91733] New: Destroy CSS decoded data more eagerly once they become dead caches.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=91733

           Summary: Destroy CSS decoded data more eagerly once they become
                    dead caches.
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Page Loading
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: luxtella at company100.net


There are three CachedResources with decoded data: CachedImage, CachedScript
and CachedCSSStyleSheet. In the cases of CachedImage and CachedScript, we
eagerly destroy the decoded data using Timer in CacehdResource::allClientsRemoved().
We must apply the same policy here in CachedCSSStyleSheet because priority
inversion can occur. For example, we can't destroy the decoded data of CachedImages
when they are referenced by CachedCSSStyleSheet as background, mask or border
images.

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