[issue25063] shutil.copyfileobj should internally use os.sendfile when possible

[desbma]

New submission from desbma:

Sorry if it has already been discussed, or if this is a stupid idea.

By looking at the signature, my thought was that the only use of shutil.copyfileobj was to wrap the use of sendfile, and use a fallback if it is not available on the system or not usable with "fake" Python files (not having a file descriptor, eg. like gzip.GzipFile).

By looking at the implementation, I was surprised that it does not try to call os.sendfile.

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components: Library (Lib)
messages: 250401
nosy: desbma
priority: normal
severity: normal
status: open
title: shutil.copyfileobj should internally use os.sendfile when possible

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue25063>
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