Function send 

pub fn send<T: Serialize>(obj: &T)

Send a serializable object down the pipe to the parent process. Panics if:

• Unable to get a lock on the PIPE_WRITER.
• The pipe module has not first been initialised with pipe::init.
• The implementation of Serialize panics.
• The writer returns an std::io::Error.

See try_send for a version that does not panic in the event of a serialisation or io::Error.