_gcdebug.py
author Rémi Cardona <remi.cardona@logilab.fr>, Julien Cristau <julien.cristau@logilab.fr>
Thu, 26 Nov 2015 11:30:54 +0100
changeset 10935 049209b9e9d6
parent 10589 7c23b7de2b8d
permissions -rw-r--r--
[qunit] stop dealing with filesystem paths qunit tests need a few things served by cubicweb: - qunit itself, which is now handled by CWDevtoolsStaticController (serving files in cubicweb/devtools/data) - standard cubicweb or cubes data files, handled by the DataController - the tests themselves and their dependencies. These can live in <apphome>/data or <apphome>/static and be served by one of the STATIC_CONTROLLERS This avoids having to guess in CWSoftwareRootStaticController where to serve things from (some files may be installed, others are in the source tree), and should hopefully make it possible to have these tests pass when using tox, and to write qunit tests for cubes, outside of cubicweb itself. This requires modifying the tests to only declare URL paths instead of filesystem paths, and moving support files below test/data/static.

# copyright 2003-2010 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
#
# This file is part of CubicWeb.
#
# CubicWeb is free software: you can redistribute it and/or modify it under the
# terms of the GNU Lesser General Public License as published by the Free
# Software Foundation, either version 2.1 of the License, or (at your option)
# any later version.
#
# CubicWeb is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License along
# with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
from __future__ import print_function

import gc, types, weakref

from cubicweb.schema import CubicWebRelationSchema, CubicWebEntitySchema
try:
    from cubicweb.web.request import _NeedAuthAccessMock
except ImportError:
    _NeedAuthAccessMock = None

listiterator = type(iter([]))

IGNORE_CLASSES = (
    type, tuple, dict, list, set, frozenset, type(len),
    weakref.ref, weakref.WeakKeyDictionary,
    listiterator,
    property, classmethod,
    types.ModuleType, types.FunctionType, types.MethodType,
    types.MemberDescriptorType, types.GetSetDescriptorType,
    )
if _NeedAuthAccessMock is not None:
    IGNORE_CLASSES = IGNORE_CLASSES + (_NeedAuthAccessMock,)

def _get_counted_class(obj, classes):
    for cls in classes:
        if isinstance(obj, cls):
            return cls
    raise AssertionError()

def gc_info(countclasses,
            ignoreclasses=IGNORE_CLASSES,
            viewreferrersclasses=(), showobjs=False, maxlevel=1):
    gc.collect()
    gc.collect()
    counters = {}
    ocounters = {}
    for obj in gc.get_objects():
        if isinstance(obj, countclasses):
            cls = _get_counted_class(obj, countclasses)
            try:
                counters[cls.__name__] += 1
            except KeyError:
                counters[cls.__name__] = 1
        elif not isinstance(obj, ignoreclasses):
            try:
                key = '%s.%s' % (obj.__class__.__module__,
                                 obj.__class__.__name__)
            except AttributeError:
                key = str(obj)
            try:
                ocounters[key] += 1
            except KeyError:
                ocounters[key] = 1
        if isinstance(obj, viewreferrersclasses):
            print('   ', obj, referrers(obj, showobjs, maxlevel))
    garbage = [repr(obj) for obj in gc.garbage]
    return counters, ocounters, garbage


def referrers(obj, showobj=False, maxlevel=1):
    objreferrers = _referrers(obj, maxlevel)
    try:
        return sorted(set((type(x), showobj and x or getattr(x, '__name__', '%#x' % id(x)))
                          for x in objreferrers))
    except TypeError:
        s = set()
        unhashable = []
        for x in objreferrers:
            try:
                s.add(x)
            except TypeError:
                unhashable.append(x)
        return sorted(s) + unhashable

def _referrers(obj, maxlevel, _seen=None, _level=0):
    interesting = []
    if _seen is None:
        _seen = set()
    for x in gc.get_referrers(obj):
        if id(x) in _seen:
            continue
        _seen.add(id(x))
        if isinstance(x, types.FrameType):
            continue
        if isinstance(x, (CubicWebRelationSchema, CubicWebEntitySchema)):
            continue
        if isinstance(x, (list, tuple, set, dict, listiterator)):
            if _level >= maxlevel:
                pass
                #interesting.append(x)
            else:
                interesting += _referrers(x, maxlevel, _seen, _level+1)
        else:
            interesting.append(x)
    return interesting