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contrib/python-hook-examples.py
author Georges Racinet <georges.racinet@octobus.net>
Sat, 24 Apr 2021 16:30:05 +0200
branchstable
changeset 47011 b7e623ac98b6
parent 45942 89a2afe31e82
child 48875 6000f5b25c9b
permissions -rw-r--r--
repoview: separate concerns in _filteredrepotypes comment The cited issue in Python bugtracker is closed, but hasn't been fixed. We've been able to use the attached example and reproduce it with Python 3.9. The point where it turns from needless stress on the GC to the an actual leak is when one factors in the fact that the GC was before Python 3.4 unable to collect some types (see PEP 442). Note that even with Python 2.7, the simple example of cycles due to __mro__ are collectable. This was seen again with the example attached on the CPython issue.
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'''
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Examples of useful python hooks for Mercurial.
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'''
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from __future__ import absolute_import
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from mercurial import (
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    patch,
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    util,
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)
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def diffstat(ui, repo, **kwargs):







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    """Example usage:







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    [hooks]












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    commit.diffstat = python:/path/to/this/file.py:diffstat












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    changegroup.diffstat = python:/path/to/this/file.py:diffstat







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    """







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    if kwargs.get('parent2'):












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        return












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    node = kwargs['node']







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    first = repo[node].p1().node()







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    if 'url' in kwargs:







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        last = repo.changelog.tip()







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    else:












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        last = node












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    diff = patch.diff(repo, first, last)












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    ui.write(patch.diffstat(util.iterlines(diff)))














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