Does Intent use Binder driver to implement?

by nfsnfs » Fri, 26 Mar 2010 14:08:00 GMT


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 Hi,

Intent and Binder are both IPC mechanisms in Android.
I would like to know: Does Intent uses Binder driver to implement?
May Intent use other part of kernel?
Or Intent has no relationship with kernel....?

Thanks anyway.

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Does Intent use Binder driver to implement?

by Dianne Hackborn » Fri, 26 Mar 2010 16:47:24 GMT


 Intent is a data container.  It makes no sense in this question.

Now if you are are asking if some APIs using intent do these things...
 well, yeah.  You can call an API with an Intent that will cause a sweeping
set of stuff to happen -- for example with startActivity, which can result
in lots of IPC (both via Binder and other ways) to communicate with the
activity manager, display a window, etc; and forking of a process, and
loading of an application (mmapping), and on and on.




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Does Intent use Binder driver to implement?

by nfsnfs chen » Fri, 26 Mar 2010 19:22:33 GMT


 Thanks for help.

I know it would be a stupid question.
But I still can not figure out how ActivityManager dispatch Intent to
the BroadcastReceiver.
Using Android Framework only or kernel may help...?

If this question is not suitable in android-kernel group, plz tell me.

Thanks a lot!





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Does Intent use Binder driver to implement?

by Dianne Hackborn » Fri, 26 Mar 2010 20:08:44 GMT


 ell the kernel is involved in most anything, of course, and certainly once
you have more than one process involved.

In this case, follow the trail -- Context.sendBroadcast(). This results in
a call on IActivityManager, which is implemented by ActivityManagerService,
and that is where the main implementation exists.

Further discussion should probably be moved off android-kernel.

On Fri, Mar 26, 2010 at 12:22 PM, nfsnfs chen <nfs...@gmail.com> wrote:




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