[Webkit-unassigned] [Bug 48619] New: [Qt][WK2] SharedMemory use two page for one page request

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=48619

           Summary: [Qt][WK2] SharedMemory use two page for one page
                    request
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Platform
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: kbalazs at webkit.org


Our shared memory implementation tries to minimize the number of allocations trough recycling unused
mappings. This technique needs an extra word (word instead of a byte for aligning) in each mapping that
tracks that the memory is used or it has been released. The problem is that we ending up in allocating
an extra page if the client rounds up it's request to page size. This is the case of the VisitedLinkTable.

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