[New-bugs-announce] [issue22042] signal.set_wakeup_fd(fd): set the fd to non-blocking mode
report at bugs.python.org
Wed Jul 23 02:49:30 CEST 2014
New submission from STINNER Victor:
I think that signal.set_wakeup_fd(fd) must set the file descriptor to the non-blocking mode, instead of requiring the file descriptor mode to be non-blocking.
Atttached patch implements this idea.
See also the issue #22018 which proposes to support sockets in signal.set_wakeup_fd(fd) on Windows.
We have to decide if signal.set_wakeup_fd() is supposed to support files or not on Windows. Non-blocking mode does not exist for files on Windows, only for sockets.
I didn't test my patch on Windows yet.
Note: the new _Py_set_blocking() function tries to use ioctl() instead of fnctl() when available to only use one syscall instead of two. I used the same optimization in _Py_set_inheritable().
title: signal.set_wakeup_fd(fd): set the fd to non-blocking mode
versions: Python 3.5
Added file: http://bugs.python.org/file36039/signal_nonblock.patch
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