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PEP 466: another counter-argument for open(blocking=True)

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Victor Stinner 2013-07-17 13:15:18 +02:00
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@ -199,6 +199,12 @@ operating system. If a platform does not support a function, the
function should not be available on the platform. For example, function should not be available on the platform. For example,
the ``os.fork()`` function is not available on Windows. the ``os.fork()`` function is not available on Windows.
UNIX has more flag on file descriptors: ``O_DSYNC``, ``O_SYNC``,
``O_DIRECT``, etc. Adding all these flags complicates the signature and
the implementation of functions creating file descriptor like open().
Moreover, these flags do not work on any file type, and are not
portable.
For all these reasons, this alternative was rejected. The PEP 3156 For all these reasons, this alternative was rejected. The PEP 3156
proposes an abstraction for asynchronous I/O supporting non-blocking proposes an abstraction for asynchronous I/O supporting non-blocking
files on Windows. files on Windows.