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From Joseph Wu <>
Subject Review Request 42864: Add subprocess methods to release ownership of pipe FDs.
Date Wed, 27 Jan 2016 20:45:03 GMT

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Review request for mesos, Benjamin Hindman and Artem Harutyunyan.

Bugs: MESOS-4535

Repository: mesos


Adds the methods `release_in/out/err` for transferring ownership of FDs created via `Subprocess::PIPE`.
 This is necessary if the pipe FD is closed before the subprocess terminates.

For example, passing the pipe into `Subprocess::FD(<pipe>, IO::OWNED)` will close the
pipe in the parent.


  3rdparty/libprocess/include/process/subprocess.hpp 482ea23410300997956e2a8ece397cb96157894c

  3rdparty/libprocess/src/tests/subprocess_tests.cpp 09e46eb1ce10a6c38cc364077f0b5952579d46e7



make check (OSX)

The new test mimics how the LogrotateContainerLogger uses subprocesses.  If you change `sink->release_in().get()`
to `sink->in().get()`, the test will fail.


Joseph Wu

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