Messages in this thread | | | Date | Wed, 09 Oct 2002 11:06:43 -0400 | From | Brian Gerst <> | Subject | Re: Writable global section? |
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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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