[Webkit-unassigned] [Bug 22360] New: JSC::getCurrentUTCTimeWithMicroseconds uses unprotected static variables

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=22360

           Summary: JSC::getCurrentUTCTimeWithMicroseconds uses unprotected
                    static variables
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Macintosh
        OS/Version: Mac OS X 10.5
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: ap at webkit.org
                CC: sfalken at apple.com


Recently, a number of static variables were added to
JSC::getCurrentUTCTimeWithMicroseconds(). These include doubles, which are not
written to memory atomically on common platforms. Likely, this also created
race conditions in this function, although I don't have any to pinpoint.

I'm fairly sure that this will make JavaScriptCore date/time functions
misbehave when used from multiple concurrent threads.


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