Issue 47199: multiprocessing: micro-optimize Connection.send_bytes() method - Python tracker

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classification
process
Status: open Resolution:
Dependencies: Superseder:
Assigned To: Nosy List: malin
Priority: normal Keywords: patch

Created on 2022-04-02 06:28 by malin, last changed 2022-04-11 14:59 by admin.

Pull Requests
URL Status Linked Edit
PR 32247 open malin, 2022-04-02 06:29
Messages (1)
msg416538 - (view) Author: Ma Lin (malin) * Date: 2022-04-02 06:28 
`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