[Webkit-unassigned] [Bug 26611] New: Implement currentThreadStackBase on WinCE

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=26611

           Summary: Implement currentThreadStackBase on WinCE
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Other
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Platform
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: joe.mason at torchmobile.com
                CC: treat at kde.org, yong.li at torchmobile.com


WinCE has no function to find the stack base, so we keep a global, g_stackBase,
which must be set to the address of a local variable by the caller before
calling any WebKit function that invokes JSC.  currentThreadStackBase simply
returns this value if it is set.

If g_stackBase is not set, as a workaround currentThreadStackBase finds the top
of the stack (address of a local variable), and then goes through all writeable
pages reachable from this address.  This actually returns an area much bigger
than the actual stack range, so some dead objects can't be collected, but it
guarantees live objects aren't collected prematurely.


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