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class Horizon:
def __init__(self, mod):
self.mod = mod
self._hiding_tag_ = mod._hiding_tag_
# Make preallocations of things that will be needed for news()
self.retset = self.mod.retset
self.hv = mod.hv
self.exc_info = self.mod._root.sys.exc_info
self.iso = self.mod.iso
str(self.retset(self.iso(1, [], (), {}, self.__dict__)) -
self.iso(()))
mod.hv.heap
mod.enter
mod.gc.collect()
self.hv_horizon = mod.heapyc.Horizon(self.hv)
def news(self):
r = self.retset(self.hv_horizon.news(self.mod.enter(self.hv.heap)))
return r
class ClearCallback(object):
__slots__ = 'callback',
def __init__(self, callback):
self.callback = callback
def __call__(self, wr):
if self.callback is not None:
self.callback(wr)
else:
print('No callback')
class Gchook_type(object):
__slots__ = 'x', '__weakref__', 'cb'
def __init__(g):
g.x = g
class ObservationList(list):
__slots__ = '_hiding_tag_',
def __init__(self, iterable, hiding_tag):
list.__init__(self, iterable)
self._hiding_tag_ = hiding_tag
class _GLUECLAMP_:
_imports_ = (
'_parent.ImpSet:immnodeset',
'_parent.ImpSet:immnodeset_union',
'_parent.ImpSet:mutnodeset',
'_parent.ImpSet:NodeSet',
'_parent.UniSet:nodeset_adapt',
'_parent.UniSet:retset',
'_parent.Use:idset',
'_parent.Use:iso',
'_parent.Use:Type',
'_root:ctypes',
'_root:gc',
'_root:types',
)
_chgable_ = ('is_rg_update_all', 'referrers_lock', '_is_clear_drg_enabled',
'root',)
_setable_ = ('_hiding_tag_', 'target', 'is_hiding_calling_interpreter',)
is_hiding_calling_interpreter = False
is_rg_update_all = False
_is_clear_drg_enabled = 1 # Flag mainly for test, Note Apr 19 2005
_hiding_tag_ = []
#opt_rg_update_all = True
_uniset_exports = (
# 'dominos',
# 'domisize',
'imdom',
# 'indisize',
# 'referents',
# 'referrers',
'referrers_gc',
)
def _get__clear_hook(self):
return self.mutnodeset()
def clear_check(self):
ch = self._clear_hook
try:
wr = list(ch)[0]
except IndexError:
self.clear_setup()
else:
# When tracing is enabled, each local variable gets two references.
# See Guppy 3 issue #3.
c = [wr()]
if c[0] is None:
self.clear_setup()
elif self._root.sys.getrefcount(c[0]) > 3:
print('GC hook object was referred to from somebody!')
self.clear_callback(wr)
c[0].cb.callback = None
def clear_callback(self, wr):
self._clear_hook.clear()
for m in self.clear_methods:
m()
self.clear_setup()
def clear_setup(self):
ch = self._clear_hook
ch.clear()
c = self.gchook_type()
cb = self.ClearCallback(self.clear_callback)
c.cb = cb
ch.add(self._root.weakref.ref(c, cb))
def _get_clear_methods(self):
return []
def clear_register_method(self, m):
self.clear_methods.append(m)
self.clear_check()
def _get_dict_ownership(self):
drg = self.nodegraph()
def clear_drg():
if drg.is_sorted and self._is_clear_drg_enabled:
drg.clear()
else:
pass
self.clear_register_method(clear_drg)
return drg
def _get_gchook_type(self):
return Gchook_type
def _get_capsule_type(self):
return self.ctypes.cast(
self.ctypes.pythonapi.PyCapsule_Type, self.ctypes.py_object).value
def _get_heapdef_modules(self):
# We touch self.heapyc to import it & its dependent guppy.sets;
# this is kinda specialcase-hacky but see Notes Apr 8 2005.
self.heapyc
return list(self.target.sys.modules.items())
def _get_heapdefs(self):
heapdefs = []
for n, m in self.heapdef_modules:
try:
hd = getattr(m, '_NyHeapDefs_')
except AttributeError:
continue
if not hd or not isinstance(hd, self.capsule_type):
continue
heapdefs.append(hd)
return tuple(heapdefs)
def _get_heapyc(self): return self._parent.heapyc
def _get_hv(self):
hv = self.new_hv(_hiding_tag_=self._hiding_tag_,
is_hiding_calling_interpreter=self.is_hiding_calling_interpreter)
return hv
def _get_norefer(self): return self.mutnodeset()
def _get_referrers_targets(self): return []
def _get_rg(self):
rg = self.nodegraph()
self.clear_register_method(self._clear_rg)
return rg
def _clear_rg(self):
if self.referrers_lock:
return
rg = self.rg
if rg.is_sorted:
rg.clear()
self.norefer.clear()
else:
pass
def _get_referrers_lock(self): return 0
def _get_root(self): return self.heapyc.RootState
def _get_target(self): return self._parent.Target.Target(self._hiding_tag_)
def _set_root(self, root):
self.clear_retainers()
self.hv.root = root
def call_with_referrers(self, X, f):
self.referrers_lock += 1
try:
self.update_referrers(X)
return f(X)
finally:
self.referrers_lock -= 1
def clear_retainers(self):
"""G.clear_retainers()
Clear the retainer graph V.rg.
"""
self.rg.clear()
self.norefer.clear()
def dominos(self, X):
"""dominos(X) -> idset
Return the dominos of a set of objects X. The dominos of X is the set
of objects that are dominated by X, which is the objects that will become
deallocated, directly or indirectly, when the objects in X are deallocated."""
return self.dominos_tuple((X,))[0]
def dominos_tuple(self, X):
"""V.dominos_tuple(X) -> tuple of idsets
Return a tuple of dominos for the tuple of sets of objects X."""
D_ = [self.nodeset_adapt(x)
for x in X] # Convert to naming like in the appendix
T = self.hv.reachable
S = self.immnodeset([self.root])
D = self.immnodeset_union(D_)
W = T(S, D)
return tuple([self.retset(T(Di, W) - T(D, W | Di)) for Di in D_])
def domisize(self, X):
"""domisize(X) -> int
Return the dominated size of a set of objects X. The dominated size of X
is the total size of memory that will become deallocated, directly or
indirectly, when the objects in X are deallocated. See also: indisize."""
return self.domisize_tuple((X,))[0]
def domisize_tuple(self, X):
""""V.domisize_tuple(X) -> tuple of ints
Return a tuple of dominated sizes for the tuple of sets of objects X."""
return tuple([self.indisize(dominos_i)
for dominos_i in self.dominos_tuple(X)])
def enter(self, func):
if self.hv.is_hiding_calling_interpreter:
self.hv.limitframe = None
elif self.hv.limitframe is not None:
return func()
else:
import inspect
self.hv.limitframe = inspect.currentframe().f_back.f_back
try:
retval = func()
finally:
self.hv.limitframe = None
return retval
def gchook(self, func):
c = self.gchook_type()
ho = self.mutnodeset()
def cb(wr):
func()
ho.clear()
c = self.gchook_type()
ho.add(self._root.weakref.ref(c, cb))
ho.add(self._root.weakref.ref(c, cb))
return self.mutnodeset([ho])
def heapg(self, rma=1):
# Almost the same as gc.get_objects(),
# except:
# 1. calls gc.collect() first (twice)
# 2. removes objects of type gchook
# 3. removes objects of type ClearCallback
# 4. removes all objects of type types.FrameType
# 5. removes all objects of weakref type
# 6. If rma = 1,
# removes all that is in the reachable heap
# except what is in the set itself.
# . wraps the result in an IdSet
self.gc.collect()
self.gc.collect()
objs = self.gc.get_objects()
cli = self.hv.cli_type()
objs = cli.select(objs, self.gchook_type, '!=')
objs = cli.select(objs, ClearCallback, '!=')
objs = cli.select(objs, self._root.types.FrameType, '!=')
objs = cli.select(objs, self._root.weakref.ReferenceType, '!=')
r = self.retset(objs)
del cli, objs
if rma:
r = (r - self.idset(self.heapyc.HeapView(
self.heapyc.RootState,
self.heapdefs
).reachable_x(
self.immnodeset([self.heapyc.RootState]),
self.observation_containers()
))
)
return r
def heapu(self, rma=1):
self.gc.collect()
self.gc.collect()
r = self.gc.get_objects()
exclude = (self.Type(self.gchook_type) |
self.Type(ClearCallback)
)
if rma:
exclude |= self.idset(self.heapyc.HeapView(
self.heapyc.RootState,
self.heapdefs
).reachable_x(
self.immnodeset([self.heapyc.RootState]),
self.immnodeset([r])
))
r = self.retset(r) - exclude
ref = r.referents - exclude
while not ref <= r:
r |= ref
ref = ref.referents - exclude
del ref, exclude
r = r.bytype # Avoid memoizing for complicated classification
return r
def heap(self):
"""V.heap() -> idset
Return the set of objects in the visible heap.
"""
global heap_one_time_initialized
# This is to make sure that the first time called
# the heap will contain things that may likely be loaded later
# because of common operations.
if not heap_one_time_initialized:
old_root = self.root
objs = [[], 'a', 1, 1.23, {'a': 'b'}, self]
self.root = objs
try:
repr(self.idset(objs))
repr(self.iso(objs[0]).shpaths)
repr(self.iso(objs[0]).rp)
finally:
self.root = old_root
del objs
del old_root
heap_one_time_initialized = True
self.gc.collect() # Sealing a leak at particular usage ; Notes Apr 13 2005
# Exclude current frame by encapsulting in enter(). Note Apr 20 2005
return self.enter(lambda:
self.idset(self.hv.heap()))
def horizon(self):
return self.Horizon(self)
def imdom(self, X):
"""imdom(X) -> idset
Return the immediate dominators of a set of objects X. The immediate
dominators is a subset of the referrers. It includes only those
referrers that are reachable directly, avoiding any other referrer."""
pred = self.nodeset_adapt(self.referrers(X))
visit = self.hv.reachable_x(self.immnodeset([self.root]), pred)
return self.retset(pred & visit)
def indisize(self, X):
"""indisize(X) -> int
Return the sum of the individual sizes of the set of objects X.
The individual size of an object is the size of memory that is
allocated directly in the object, not including any externally
visible subobjects. See also: domisize."""
return self.hv.indisize_sum(self.nodeset_adapt(X))
def new_hv(self, _hiding_tag_=None, is_hiding_calling_interpreter=False,
heapdefs=None, root=None, gchook_type=None):
if heapdefs is None:
heapdefs = self.heapdefs
if root is None:
root = self.root
if gchook_type is None:
gchook_type = self.gchook_type
hv = self.heapyc.HeapView(root, heapdefs)
hv._hiding_tag_ = _hiding_tag_
hv.is_hiding_calling_interpreter = is_hiding_calling_interpreter
hv.register_hidden_exact_type(gchook_type)
# hv.register__hiding_tag__type(self._parent.UniSet.UniSet)
hv.register__hiding_tag__type(self._parent.UniSet.Kind)
hv.register__hiding_tag__type(self._parent.UniSet.IdentitySetMulti)
hv.register__hiding_tag__type(self._parent.UniSet.IdentitySetSingleton)
return hv
def nodegraph(self, iterable=None, is_mapping=False):
ng = self.heapyc.NodeGraph(iterable, is_mapping)
ng._hiding_tag_ = self._hiding_tag_
return ng
def obj_at(self, addr):
try:
return self.immnodeset(self.hv.static_types).obj_at(addr)
except ValueError:
pass
try:
return self.immnodeset(self.gc.get_objects()).obj_at(addr)
except ValueError:
pass
try:
return self.immnodeset(self.hv.heap()).obj_at(addr)
except ValueError:
raise ValueError('No object found at address %s' % hex(addr))
def observation_containers(self):
# Return the current set of 'observation containers'
# as discussed in Notes Oct 27 2005.
# returns a nodeset, not an idset, to avoid recursive referenes
objs = self.gc.get_objects()
cli = self.hv.cli_type()
objs = (cli.select(objs, self.NodeSet, '<=') +
cli.select(objs, ObservationList, '<=') +
cli.select(
objs, self._parent.UniSet.IdentitySetSingleton, '<=')
)
r = self.immnodeset([x for x in objs if getattr(
x, '_hiding_tag_', None) is self._hiding_tag_])
del cli, objs
return r
def observation_list(self, iterable=()):
# Return an ObservationList object with our _hiding_tag_
return ObservationList(iterable, self._hiding_tag_)
def referents(self, X):
"""V.referents(X) -> idset
Return the set of objects that are directly referred to by
any of the objects in the set X."""
return self.retset(self.hv.relimg(self.nodeset_adapt(X)))
def referrers(self, X):
"""V.referrers(X) -> idset
Return the set of objects that directly refer to
any of the objects in the set X."""
X = self.nodeset_adapt(X)
if self.is_rg_update_all and self.root is self.heapyc.RootState:
if not (self.rg.domain_covers(X) or
self.rg.domain_covers(X - self.norefer)):
self.rg.clear()
import gc
gc.collect()
self.hv.update_referrers_completely(self.rg)
addnoref = X - self.rg.get_domain()
self.norefer |= addnoref
else:
Y = self.mutnodeset(X)
Y -= self.norefer
if not self.rg.domain_covers(Y):
for wt in self.referrers_targets:
t = wt()
if t is not None:
Y |= t.set.nodes
Y |= self.rg.get_domain()
self.rg.clear()
self.hv.update_referrers(self.rg, Y)
self.norefer.clear()
self.norefer |= (X | Y | self.rg.get_range())
self.norefer -= self.rg.get_domain()
Y = self.mutnodeset(X) - self.norefer
if not self.rg.domain_covers(Y):
print('update_referrers failed')
print('Y - domain of rg:')
print(self.idset(Y - self.rg.get_domain()))
Y = None
X = self.rg.relimg(X)
X = self.immnodeset(X) - [None]
X = self.retset(X)
return X
def referrers_gc(self, X):
"""V.referrers_gc(X) -> idset
Return the set of objects that directly refer to
any of the objects in the set X.
This differs from referrers in that it uses the
gc module's view of the referrers. This is more or less
valid depending on viewpoint.
"""
X = tuple(self.nodeset_adapt(X))
return self.idset(self.gc.get_referrers(*X)) - self.iso(X)
def referrers_add_target(self, t):
def remove(wr):
self.referrers_targets.remove(wr)
wr = self._root.weakref.ref(t, remove)
self.referrers_targets.append(wr)
def update_referrers(self, X):
"""V.update_referrers(X)
Update the view V from the set X. X must be adaptable to NodeSet. V.rg is
updated so that in addition to its previos mapping, it will also contain
mappings for the elements of X to their referrers, from them to their
referrers and so on.
"""
self.referrers(X)
def prime_builtin_types():
# Make sure builtin types have been completely allocated
# with all method descriptors etc.
# so subsequent events will not give spurios confusing allocations.
# This should need to be done only once.
# (Or whenever a new (extension) module is imported??)
# The problem & solution is further discussed in Notes Nov 9 2005.
import types
import guppy.heapy.heapyc
import guppy.sets.setsc
import os
import sys
import warnings
import weakref
for mod in list(sys.modules.values()):
if mod is None or getattr(mod, '__dict__', None) is None:
continue
for t in list(mod.__dict__.values()):
if isinstance(t, type):
dir(t)
# Other type(s)
for t in [type(iter([])), type(iter(())),
]:
dir(t)
# Ubuntu apport package installs a sys.excepthook that will import a lot
# of packages when there is an unhandled exception. This can cause a lot
# of irrelevant stuffs when we analyze a relative heap.
try:
import apport.fileutils
except ImportError:
pass
else:
import re
import traceback
if 'pythoncom' in sys.modules:
def get_pywin32_ver():
try:
import pkg_resources
return pkg_resources.get_distribution('pywin32').version
except Exception:
pass
try:
import distutils.sysconfig
site_pkg = distutils.sysconfig.get_python_lib(plat_specific=1)
with open(os.path.join(site_pkg, 'pywin32.version.txt')) as f:
return f.read().strip()
except Exception:
pass
return None
pywin32_ver = get_pywin32_ver()
if pywin32_ver:
try:
pywin32_ver = int(pywin32_ver)
except ValueError:
pass
else:
if pywin32_ver < 300:
warnings.warn(
'pythoncom in pywin32 < 300 may cause crashes. See '
'https://github.com/zhuyifei1999/guppy3/issues/25. '
'You may want to upgrade to the newest version of '
'pywin32 by running "pip install pywin32 --upgrade"')
prime_builtin_types()
# The following global variable is used by heap()
# to do extra initializations the first time it is called.
# having to do that we want to do import and init things
# but only if heap is actually called
heap_one_time_initialized = False
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