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Trait AsyncVectoredWrite and related utilities #3092

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Trait AsyncVectoredWrite and related utilities #3092

wants to merge 14 commits into from

Commits on Nov 7, 2020

  1. add trait AsyncVectoredWrite, impl for TcpStream 

    Reintroduce vectored I/O facilities in the new module io::vec,
starting from the poll_write_vectored method in the new
AsyncVectoredWrite trait.

Implement AsyncVectoredWrite for TcpStream.
    @mzabaluev
    mzabaluev committed Nov 7, 2020
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  2. impl AsyncVectoredWrite for Sink 

    io::Sink can consume vectored buffers just as well as it can do
single buffers.
    @mzabaluev
    mzabaluev committed Nov 7, 2020
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  3. generic AsyncVectoredWrite impls for pointer types

    @mzabaluev
    mzabaluev committed Nov 7, 2020
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  4. trait AsyncVectoredWriteExt 

    An extension trait providing async-friendly methods for
all implementors of AsyncVectoredWrite.
    @mzabaluev
    mzabaluev committed Nov 7, 2020
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  5. implement AsyncVectoredWrite for in-memory objects 

    Delegate these implementations to std::io::Write::write_vectored,
no blocking when writing to byte containers in memory.
    @mzabaluev
    mzabaluev committed Nov 7, 2020
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  6. implement AsyncVectoredWrite for TcpStream halves

    @mzabaluev
    mzabaluev committed Nov 7, 2020
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  7. implement AsyncVectoredWrite for Unix streams

    @mzabaluev
    mzabaluev committed Nov 7, 2020
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  8. impl AsyncVectoredWrite for BufWriter

    @mzabaluev
    mzabaluev committed Nov 7, 2020
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  9. impl AsyncVectoredWrite for BufReader, BufStream

    @mzabaluev
    mzabaluev committed Nov 7, 2020
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  10. impl AsyncVectoredWrite for io::WriteHalf

    @mzabaluev
    mzabaluev committed Nov 7, 2020
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  11. test write_vectored on TcpStream

    @mzabaluev
    mzabaluev committed Nov 7, 2020
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  12. test write_vectored on BufWriter

    @mzabaluev
    mzabaluev committed Nov 7, 2020
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  13. gate reexports from io::vec::util with io_util

    @mzabaluev
    mzabaluev committed Nov 7, 2020
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  14. Rewrite AsyncVectoredWrite impl for BufWriter 

    Fill the buffer more eagerly over consecutive calls
to poll_write_vectored. At the first non-empty slice, the
buffer is flushed if the slice does not fit completely,
after which filling can continue until capacity is exhausted, or
there is an oversized slice for direct writing,
or there are no more slices to write.
    @mzabaluev
    mzabaluev committed Nov 7, 2020
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