Mojo: More data pipe implementation.

Mojo: More data pipe implementation.

Implement the dispatcher for the producer side
(DataPipeProducerDispatcher); the consumer side will be similar.

Implement most of the base class for the connecting part (DataPipe).
Subclasses will provide implementations for the various cases (both
local, local producer/remote consumer, remote producer/local consumer).

The setup is similar to that for MessagePipe, but factored a bit
differently since the sides aren't symmetric (hence no gain in factoring
out the endpoint code).

R=sky@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=240774

[viettrungluu, 2013-12-13 22:03:42]

This doesn't actually do anything yet, and isn't hooked up. But
data_pipe_producer.* are complete, and data_pipe.* is half-complete (needs the
producer side).

After the consumer side is done (data_pipe_consumer.* and the rest of
data_pipe.*), there'll be a little code needed to make data pipes work locally
(implement LocalDataPipe). Then I'll be able to write tests....

[sky, 2013-12-13 22:16:21]

LGTM

https://codereview.chromium.org/103533008/diff/1/mojo/system/data_pipe.cc
File mojo/system/data_pipe.cc (right):

https://codereview.chromium.org/103533008/diff/1/mojo/system/data_pipe.cc#new...
mojo/system/data_pipe.cc:71: MojoWaitFlags flags,
nit: spacing

[viettrungluu, 2013-12-13 22:22:48]

Thanks.

https://codereview.chromium.org/103533008/diff/1/mojo/system/data_pipe.cc
File mojo/system/data_pipe.cc (right):

https://codereview.chromium.org/103533008/diff/1/mojo/system/data_pipe.cc#new...
mojo/system/data_pipe.cc:71: MojoWaitFlags flags,
On 2013/12/13 22:16:21, sky wrote:
> nit: spacing

Done.

[viettrungluu, 2013-12-13 22:23:54]

Committed patchset #2 manually as r240774 (presubmit successful).