[issue13788] os.closerange optimization

[Ferringb]

New submission from Ferringb <ferringb at gmail.com>:

The current implementation of closerange essentially is a bruteforce invocation of close for every integer in the range.

While this works, it's rather noisy for stracing, and for most invocations, is near a thousand close invocations more than needed.

As such it should be aware of /proc/${PID}/fd, and use that to isolate down just what is actually open, and close that.

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components: Extension Modules
files: closerange-optimization.patch
keywords: patch
messages: 151273
nosy: ferringb
priority: normal
severity: normal
status: open
title: os.closerange optimization
type: performance
Added file: http://bugs.python.org/file24241/closerange-optimization.patch

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<http://bugs.python.org/issue13788>
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