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    SubjectRe: Writable global section?
    Richard B. Johnson wrote:
    > I would like to be able to write to that variable and have it seen
    > by other tasks, since shared memory is shared memory. It's a shame
    > to mmap a shared library upon startup and then have to mmap some
    > additional shared memory for some inter-process communication.

    There are only two ways to share memory between processes:
    - SYSV shared memory
    - using clone() to share the VM.

    Shared libraries != shared memory. Each mapping of a shared library is
    copy-on-write. The purpose of shared libraries is to save memory, not
    for IPC.

    Brian Gerst

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