[issue36488] os.sendfile() on BSD, macOS don't return bytes sent on EINTR
Giampaolo Rodola'
report at bugs.python.org
Fri Apr 5 14:44:05 EDT 2019
Giampaolo Rodola' <g.rodola at gmail.com> added the comment:
sendfile() on BSD/OSX is complicated by the headers/trailers args. You'll have to take that into account in the retry logic, adding unnecessary complexity. Since sendfile() may already return fewer bytes than requested (e.g. non-blocking sockets or big files) it's just easier to return the bytes sent thus far (if any). I can work on a patch once I find some time.
> Wasn't the point of PEP475 that all EINTR returns would be explicitly handled by retrying rather than forcing the user to handle it?
>From PEP475: <<[...] to relieve application code from the burden of doing so>>
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