New submission from STINNER Victor <vstin...@python.org>:
The select.epoll.unregister(fd) method currently ignores EBADF error if the file descriptor fd is invalid. I'm surprised by this undocumented behavior: https://docs.python.org/dev/library/select.html#select.epoll.unregister This behavior may lead to bugs if the file descriptor number has been recycled in the meanwhile. I'm not sure that it's a good idea to silently ignore the error. See bpo-18748 for a similar issue: "io.IOBase destructor silence I/O error on close() by default". Note: The method also ignores EBADF error if the epoll file descriptor has been closed. The behavior is as old as the implementation of select.epoll, bpo-1657: commit 0e9ab5f2f0f907b57c70557e21633ce8c341d1d1 Author: Christian Heimes <christ...@cheimes.de> Date: Fri Mar 21 23:49:44 2008 +0000 Applied patch #1657 epoll and kqueue wrappers for the select module The patch adds wrappers for the Linux epoll syscalls and the BSD kqueue syscalls. Thanks to Thomas Herve and the Twisted people for their support a nd help. TODO: Finish documentation documentation Thomas Herve wrote a first implementation in bpo-1675118, but it seems like it was Christian Heimes who wrote the unregister() method. ---------- components: Library (Lib) messages: 359481 nosy: christian.heimes, vstinner priority: normal severity: normal status: open title: select.epoll.unregister(fd) should not ignore EBADF versions: Python 3.9 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue39239> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
