I have the same question too. What is the use-case for exposing
MemoryFile without an API to get the File descriptor (to pass to
another process) or a way to allow access from another process?

On Jun 23, 2:13 pm, Alec <gorje...@gmail.com> wrote:
> I tested the MemoryFile between threads just to make sure I was doing
> it correctly.  My hope is to send data between processes using shared
> memory.  It seems to defeat the purpose of shared memory to NOT be
> able to map memory between two separate apps.  That's why they call it
> shared.  Is this going to be supported in the near future?
>
> On Jun 23, 2:17 pm, Dianne Hackborn <hack...@android.com> wrote:
>
> > Also, fwiw, there is no reason to use a MemoryFile to share between two
> > threads -- you can just make any object and share it between them.
>
> > On Tue, Jun 23, 2009 at 12:14 PM, Marco Nelissen <marc...@android.com>wrote:
>
> > > On Mon, Jun 22, 2009 at 1:29 PM, Alec <gorje...@gmail.com> wrote:
>
> > >> Hi,
>
> > >> I've been able to send data via shared memory between threads within a
> > >> process using MemoryFile.  I then tried to send data between a service
> > >> and an activity in different processes, but the data did not get
> > >> passed.  The name for each call the MemoryFile's constructor was the
> > >> same.  Is it possible to share data between processes using a
> > >> MemoryFile?
>
> > > Two MemoryFiles with the same name don't automatically map to the same
> > > area.
> > > Currently the only way to use a MemoryFile across processes is to use
> > > hidden APIs, which you shouldn't do.
>
> > --
> > Dianne Hackborn
> > Android framework engineer
> > hack...@android.com
>
> > Note: please don't send private questions to me, as I don't have time to
> > provide private support, and so won't reply to such e-mails.  All such
> > questions should be posted on public forums, where I and others can see and
> > answer them.
>
>
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