[Python-checkins] GH-91355: micro-optimize Connection.send_bytes() method (gh-32247)

corona10 webhook-mailer at python.org
Tue May 3 10:41:50 EDT 2022


https://github.com/python/cpython/commit/1699128c4891da3bbe23553d709261d88855b93f
commit: 1699128c4891da3bbe23553d709261d88855b93f
branch: main
author: Ma Lin <animalize at users.noreply.github.com>
committer: corona10 <donghee.na92 at gmail.com>
date: 2022-05-03T23:41:45+09:00
summary:

GH-91355: micro-optimize Connection.send_bytes() method (gh-32247)

files:
M Lib/multiprocessing/connection.py

diff --git a/Lib/multiprocessing/connection.py b/Lib/multiprocessing/connection.py
index 1cca66d5661e3..65303d29f51f8 100644
--- a/Lib/multiprocessing/connection.py
+++ b/Lib/multiprocessing/connection.py
@@ -188,10 +188,9 @@ def send_bytes(self, buf, offset=0, size=None):
         self._check_closed()
         self._check_writable()
         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)
+            m = m.cast('B')
+        n = m.nbytes
         if offset < 0:
             raise ValueError("offset is negative")
         if n < offset:



More information about the Python-checkins mailing list