[Webkit-unassigned] [Bug 53485] New: Web Workers' shared memory

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=53485

           Summary: Web Workers' shared memory
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: UNCONFIRMED
          Severity: Enhancement
          Priority: P3
         Component: WebCore Misc.
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: loki at webkit.org
                CC: zherczeg at webkit.org


The Web Workers are very good feature, for example if a heavy computation is needed in JavaScript, or there is a need to manage shared data through different sessions. Although the current specification and design of Web Workers is robust, the communication interface is based on a message-passing method. This communication channel is not efficient if a large chunk of data have to be moved through the message-passing channel of Web Workers.

One possible solution could be to use a shared memory region for this kind of data passing. If there is shared memory region which is accessible from the main and the worker threads, there will be no need to use the message-passing channel for large data. This will save cpu resources (like converting the raw data for message-passing channel). The peak memory consumption will not be increased because of this method, although the minimal memory consumption will be bigger (with the size of shared memory region of course).

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