#715: Parents probably not reclaimed due to too much caching
--------------------------------------------------------------------+-------
Reporter: robertwb |
Owner: somebody
Type: defect |
Status: closed
Priority: major |
Milestone: sage-5.5
Component: coercion |
Resolution: fixed
Keywords: weak cache coercion Cernay2012 | Work
issues:
Report Upstream: N/A |
Reviewers: Jean-Pierre Flori, Simon King, Nils Bruin
Authors: Simon King, Jean-Pierre Flori |
Merged in: sage-5.5.beta0
Dependencies: #13145, #13741, #13746, to be merged with #11521 |
Stopgaps:
--------------------------------------------------------------------+-------
Comment (by jpflori):
Building Python without pymalloc, I hopefully got valgrind outputs which
might point to the hopefully last problem we have to face:
Not sure we got these so clearly before, but using --without-pymalloc and
Valgrind (hint: finish and review #13060) I get lots of
{{{
==28631== Invalid read of size 8
==28631== at 0x10429E50:
__pyx_tp_dealloc_4sage_9structure_15category_object_CategoryObject
(category_object.c:8990)
==28631== by 0x4ED96C5: subtype_dealloc (typeobject.c:1014)
==28631== by 0x4EBA106: insertdict (dictobject.c:530)
==28631== by 0x4EBCB51: PyDict_SetItem (dictobject.c:775)
==28631== by 0x4EC2517: _PyObject_GenericSetAttrWithDict
(object.c:1524)
==28631== by 0x4EC1F5E: PyObject_SetAttr (object.c:1247)
==28631== by 0x4F21600: PyEval_EvalFrameEx (ceval.c:2004)
==28631== by 0x4F26587: PyEval_EvalCodeEx (ceval.c:3253)
==28631== by 0x4EA8F65: function_call (funcobject.c:526)
==28631== by 0x4E7DFED: PyObject_Call (abstract.c:2529)
==28631== by 0x4F1F6A6: PyEval_CallObjectWithKeywords (ceval.c:3890)
==28631== by 0x4F23D5A: PyEval_EvalFrameEx (ceval.c:1739)
==28631== by 0x4F26587: PyEval_EvalCodeEx (ceval.c:3253)
==28631== by 0x4F266C1: PyEval_EvalCode (ceval.c:667)
==28631== by 0x4F24388: PyEval_EvalFrameEx (ceval.c:4718)
==28631== by 0x4F26587: PyEval_EvalCodeEx (ceval.c:3253)
==28631== by 0x4EA8F65: function_call (funcobject.c:526)
==28631== by 0x4E7DFED: PyObject_Call (abstract.c:2529)
==28631== by 0x4E8C46F: instancemethod_call (classobject.c:2578)
==28631== by 0x4E7DFED: PyObject_Call (abstract.c:2529)
==28631== by 0x4F21828: PyEval_EvalFrameEx (ceval.c:4239)
==28631== by 0x4F26587: PyEval_EvalCodeEx (ceval.c:3253)
==28631== by 0x4F2422C: PyEval_EvalFrameEx (ceval.c:4117)
==28631== by 0x4F26587: PyEval_EvalCodeEx (ceval.c:3253)
==28631== by 0x4EA8F65: function_call (funcobject.c:526)
==28631== Address 0xbd30390 is 48 bytes inside a block of size 256 free'd
==28631== at 0x4C28B16: free (vg_replace_malloc.c:446)
==28631== by 0x4ED96C5: subtype_dealloc (typeobject.c:1014)
==28631== by 0x4F5F112: collect (gcmodule.c:770)
==28631== by 0x4F5FB06: _PyObject_GC_Malloc (gcmodule.c:996)
==28631== by 0x4F5FB3C: _PyObject_GC_New (gcmodule.c:1467)
==28631== by 0x4E98B97: PyWrapper_New (descrobject.c:1068)
==28631== by 0x4EC2258: _PyObject_GenericGetAttrWithDict
(object.c:1434)
==28631== by 0x10A6CD28:
__pyx_pw_4sage_9structure_11coerce_dict_16TripleDictEraser_3__call__
(coerce_dict.c:1225)
==28631== by 0x4E7DFED: PyObject_Call (abstract.c:2529)
==28631== by 0x4E7EB2D: PyObject_CallFunctionObjArgs (abstract.c:2760)
==28631== by 0x4EEA350: PyObject_ClearWeakRefs (weakrefobject.c:881)
==28631== by 0x10429E4F:
__pyx_tp_dealloc_4sage_9structure_15category_object_CategoryObject
(category_object.c:8989)
==28631== by 0x4ED96C5: subtype_dealloc (typeobject.c:1014)
==28631== by 0x4EBA106: insertdict (dictobject.c:530)
==28631== by 0x4EBCB51: PyDict_SetItem (dictobject.c:775)
==28631== by 0x4EC2517: _PyObject_GenericSetAttrWithDict
(object.c:1524)
==28631== by 0x4EC1F5E: PyObject_SetAttr (object.c:1247)
==28631== by 0x4F21600: PyEval_EvalFrameEx (ceval.c:2004)
==28631== by 0x4F26587: PyEval_EvalCodeEx (ceval.c:3253)
==28631== by 0x4EA8F65: function_call (funcobject.c:526)
==28631== by 0x4E7DFED: PyObject_Call (abstract.c:2529)
==28631== by 0x4F1F6A6: PyEval_CallObjectWithKeywords (ceval.c:3890)
==28631== by 0x4F23D5A: PyEval_EvalFrameEx (ceval.c:1739)
==28631== by 0x4F26587: PyEval_EvalCodeEx (ceval.c:3253)
==28631== by 0x4F266C1: PyEval_EvalCode (ceval.c:667)
}}}
and
{{{
==28631== Invalid read of size 8
==28631== at 0x4F5FC1E: PyObject_GC_Del (gcmodule.c:210)
==28631== by 0x4ED96C5: subtype_dealloc (typeobject.c:1014)
==28631== by 0x4EBA106: insertdict (dictobject.c:530)
==28631== by 0x4EBCB51: PyDict_SetItem (dictobject.c:775)
==28631== by 0x4EC2517: _PyObject_GenericSetAttrWithDict
(object.c:1524)
==28631== by 0x4EC1F5E: PyObject_SetAttr (object.c:1247)
==28631== by 0x4F21600: PyEval_EvalFrameEx (ceval.c:2004)
==28631== by 0x4F26587: PyEval_EvalCodeEx (ceval.c:3253)
==28631== by 0x4EA8F65: function_call (funcobject.c:526)
==28631== by 0x4E7DFED: PyObject_Call (abstract.c:2529)
==28631== by 0x4F1F6A6: PyEval_CallObjectWithKeywords (ceval.c:3890)
==28631== by 0x4F23D5A: PyEval_EvalFrameEx (ceval.c:1739)
==28631== by 0x4F26587: PyEval_EvalCodeEx (ceval.c:3253)
==28631== by 0x4F266C1: PyEval_EvalCode (ceval.c:667)
==28631== by 0x4F24388: PyEval_EvalFrameEx (ceval.c:4718)
==28631== by 0x4F26587: PyEval_EvalCodeEx (ceval.c:3253)
==28631== by 0x4EA8F65: function_call (funcobject.c:526)
==28631== by 0x4E7DFED: PyObject_Call (abstract.c:2529)
==28631== by 0x4E8C46F: instancemethod_call (classobject.c:2578)
==28631== by 0x4E7DFED: PyObject_Call (abstract.c:2529)
==28631== by 0x4F21828: PyEval_EvalFrameEx (ceval.c:4239)
==28631== by 0x4F26587: PyEval_EvalCodeEx (ceval.c:3253)
==28631== by 0x4F2422C: PyEval_EvalFrameEx (ceval.c:4117)
==28631== by 0x4F26587: PyEval_EvalCodeEx (ceval.c:3253)
==28631== by 0x4EA8F65: function_call (funcobject.c:526)
==28631== Address 0xbd30360 is 0 bytes inside a block of size 256 free'd
==28631== at 0x4C28B16: free (vg_replace_malloc.c:446)
==28631== by 0x4ED96C5: subtype_dealloc (typeobject.c:1014)
==28631== by 0x4F5F112: collect (gcmodule.c:770)
==28631== by 0x4F5FB06: _PyObject_GC_Malloc (gcmodule.c:996)
==28631== by 0x4F5FB3C: _PyObject_GC_New (gcmodule.c:1467)
==28631== by 0x4E98B97: PyWrapper_New (descrobject.c:1068)
==28631== by 0x4EC2258: _PyObject_GenericGetAttrWithDict
(object.c:1434)
==28631== by 0x10A6CD28:
__pyx_pw_4sage_9structure_11coerce_dict_16TripleDictEraser_3__call__
(coerce_dict.c:1225)
==28631== by 0x4E7DFED: PyObject_Call (abstract.c:2529)
==28631== by 0x4E7EB2D: PyObject_CallFunctionObjArgs (abstract.c:2760)
==28631== by 0x4EEA350: PyObject_ClearWeakRefs (weakrefobject.c:881)
==28631== by 0x10429E4F:
__pyx_tp_dealloc_4sage_9structure_15category_object_CategoryObject
(category_object.c:8989)
==28631== by 0x4ED96C5: subtype_dealloc (typeobject.c:1014)
==28631== by 0x4EBA106: insertdict (dictobject.c:530)
==28631== by 0x4EBCB51: PyDict_SetItem (dictobject.c:775)
==28631== by 0x4EC2517: _PyObject_GenericSetAttrWithDict
(object.c:1524)
==28631== by 0x4EC1F5E: PyObject_SetAttr (object.c:1247)
==28631== by 0x4F21600: PyEval_EvalFrameEx (ceval.c:2004)
==28631== by 0x4F26587: PyEval_EvalCodeEx (ceval.c:3253)
==28631== by 0x4EA8F65: function_call (funcobject.c:526)
==28631== by 0x4E7DFED: PyObject_Call (abstract.c:2529)
==28631== by 0x4F1F6A6: PyEval_CallObjectWithKeywords (ceval.c:3890)
==28631== by 0x4F23D5A: PyEval_EvalFrameEx (ceval.c:1739)
==28631== by 0x4F26587: PyEval_EvalCodeEx (ceval.c:3253)
==28631== by 0x4F266C1: PyEval_EvalCode (ceval.c:667)
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/715#comment:347>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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