commit 1699128c4891da3bbe23553d709261d88855b93f
author Ma Lin <animalize@users.noreply.github.com> Tue May 03 22:41:45 2022 +0800
committer GitHub <noreply@github.com> Tue May 03 23:41:45 2022 +0900
tree 5d1a296dec207882dbef227b36834cc177e7a599
parent 9dc4aae8e92cef0590b1130bd5d1c07c1b932b73

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

Lib/multiprocessing/connection.py

diff --git a/Lib/multiprocessing/connection.py b/Lib/multiprocessing/connection.py
index 1cca66d..65303d2 100644
--- a/Lib/multiprocessing/connection.py
+++ b/Lib/multiprocessing/connection.py
@@ -188,10 +188,9 @@
         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: