[New-bugs-announce] [issue47199] multiprocessing: micro-optimize Connection.send_bytes() method

[Ma Lin]

New submission from Ma Lin <malincns at 163.com>:

`bytes(m)` can be replaced by memoryview.cast('B'), then no need for data copying.

        m = memoryview(buf)
        # HACK for byte-indexing of non-bytewise buffers (e.g. array.array)
        if m.itemsize > 1:
            m = memoryview(bytes(m))
        n = len(m)

https://github.com/python/cpython/blob/v3.11.0a6/Lib/multiprocessing/connection.py#L190-L194

----------
components: Library (Lib)
messages: 416538
nosy: malin
priority: normal
severity: normal
status: open
title: multiprocessing: micro-optimize Connection.send_bytes() method
type: resource usage
versions: Python 3.11

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue47199>
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