https://github.com/python/cpython/commit/8f82d9aa2191db7826bb7a453fe06ce65f966cf8 commit: 8f82d9aa2191db7826bb7a453fe06ce65f966cf8 branch: main author: Jakub Kulík <[email protected]> committer: encukou <[email protected]> date: 2024-09-19T14:47:05Z summary:
bpo-41843: Reenable use of sendfile in shutil module on Solaris (GH-23893) files: A Misc/NEWS.d/next/Library/2020-12-22-18-08-12.bpo-41843.q9Nh2r.rst M Doc/library/shutil.rst M Lib/shutil.py diff --git a/Doc/library/shutil.rst b/Doc/library/shutil.rst index 220207e5f3cbbf..e623c3df7beba6 100644 --- a/Doc/library/shutil.rst +++ b/Doc/library/shutil.rst @@ -517,7 +517,7 @@ the use of userspace buffers in Python as in "``outfd.write(infd.read())``". On macOS `fcopyfile`_ is used to copy the file content (not metadata). -On Linux :func:`os.sendfile` is used. +On Linux and Solaris :func:`os.sendfile` is used. On Windows :func:`shutil.copyfile` uses a bigger default buffer size (1 MiB instead of 64 KiB) and a :func:`memoryview`-based variant of @@ -529,6 +529,9 @@ file then shutil will silently fallback on using less efficient .. versionchanged:: 3.8 +.. versionchanged:: 3.14 + Solaris now uses :func:`os.sendfile`. + .. _shutil-copytree-example: copytree example diff --git a/Lib/shutil.py b/Lib/shutil.py index 6037092a5e09f2..89c12b76b61dfc 100644 --- a/Lib/shutil.py +++ b/Lib/shutil.py @@ -48,7 +48,7 @@ # This should never be removed, see rationale in: # https://bugs.python.org/issue43743#msg393429 _USE_CP_SENDFILE = (hasattr(os, "sendfile") - and sys.platform.startswith(("linux", "android"))) + and sys.platform.startswith(("linux", "android", "solaris"))) _HAS_FCOPYFILE = posix and hasattr(posix, "_fcopyfile") # macOS # CMD defaults in Windows 10 @@ -110,7 +110,7 @@ def _fastcopy_fcopyfile(fsrc, fdst, flags): def _fastcopy_sendfile(fsrc, fdst): """Copy data from one regular mmap-like fd to another by using high-performance sendfile(2) syscall. - This should work on Linux >= 2.6.33 only. + This should work on Linux >= 2.6.33, Android and Solaris. """ # Note: copyfileobj() is left alone in order to not introduce any # unexpected breakage. Possible risks by using zero-copy calls @@ -265,7 +265,7 @@ def copyfile(src, dst, *, follow_symlinks=True): return dst except _GiveupOnFastCopy: pass - # Linux + # Linux / Android / Solaris elif _USE_CP_SENDFILE: try: _fastcopy_sendfile(fsrc, fdst) diff --git a/Misc/NEWS.d/next/Library/2020-12-22-18-08-12.bpo-41843.q9Nh2r.rst b/Misc/NEWS.d/next/Library/2020-12-22-18-08-12.bpo-41843.q9Nh2r.rst new file mode 100644 index 00000000000000..4e525f7ed6a757 --- /dev/null +++ b/Misc/NEWS.d/next/Library/2020-12-22-18-08-12.bpo-41843.q9Nh2r.rst @@ -0,0 +1,2 @@ +Solaris now uses :func:`os.sendfile` fast-copy syscall for more efficient +:mod:`shutil` file copy related functions. _______________________________________________ Python-checkins mailing list -- [email protected] To unsubscribe send an email to [email protected] https://mail.python.org/mailman3/lists/python-checkins.python.org/ Member address: [email protected]
