#11342: Make getattr faster on parents and elements
---------------------------+------------------------------------------------
Reporter: SimonKing | Owner:
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-4.7.2
Component: performance | Keywords: getattr parent element
Work_issues: | Upstream: N/A
Reviewer: | Author: Simon King
Merged: | Dependencies: #9944
---------------------------+------------------------------------------------
Comment(by vbraun):
Sage-4.7.2.alpha1 segfaults with the patch applied:
{{{
[vbraun@volker-laptop-two sage]$ sage -gdb
----------------------------------------------------------------------
| Sage Version 4.7.2.alpha1, Release Date: 2011-08-17 |
| Type notebook() for the GUI, and license() for information. |
----------------------------------------------------------------------
**********************************************************************
* *
* Warning: this is a prerelease version, and it may be unstable. *
* *
**********************************************************************
/home/vbraun/Sage/sage/local/bin/sage-ipython
GNU gdb (GDB) Fedora (7.3-41.fc15)
Copyright (C) 2011 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from
/home/vbraun/opt/sage-4.7.2.alpha1/local/bin/python...done.
[Thread debugging using libthread_db enabled]
Python 2.6.4 (r264:75706, Aug 20 2011, 21:29:24)
[GCC 4.6.0 20110603 (Red Hat 4.6.0-10)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
Traceback (most recent call last):
File "/usr/share/gdb/auto-load/usr/lib64/libstdc++.so.6.0.16-gdb.py",
line 59, in <module>
from libstdcxx.v6.printers import register_libstdcxx_printers
File "/usr/lib64/../share/gcc-4.6.0/python/libstdcxx/v6/printers.py",
line 19, in <module>
import itertools
ImportError: No module named itertools
Program received signal SIGSEGV, Segmentation fault.
PyObject_GetAttr (v=0x0, name=0x1038378) at Objects/object.c:1174
1174 Objects/object.c: No such file or directory.
in Objects/object.c
Missing separate debuginfos, use: debuginfo-install
atlas-3.8.3-18.fc14.x86_64 expat-2.0.1-11.fc15.x86_64
fontconfig-2.8.0-3.fc15.x86_64 glibc-2.14-5.x86_64 keyutils-
libs-1.2-7.fc15.x86_64 krb5-libs-1.9.1-5.fc15.x86_64
libcom_err-1.41.14-2.fc15.x86_64 libgcc-4.6.0-10.fc15.x86_64
libselinux-2.0.99-4.fc15.x86_64 libstdc++-4.6.0-10.fc15.x86_64
openssl-1.0.0d-1.fc15.x86_64
(gdb) bt
#0 PyObject_GetAttr (v=0x0, name=0x1038378) at Objects/object.c:1174
#1 0x00007fffea27c2e1 in
__pyx_pf_4sage_9structure_7element_7Element_3__getattr__ (
__pyx_v_name=0x12b1530, __pyx_v_self=0x10eb418) at
sage/structure/element.c:2795
#2 __pyx_tp_getattro_4sage_9structure_7element_Element (n=0x12b1530,
o=0x10eb418)
at sage/structure/element.c:23398
#3 __pyx_tp_getattro_4sage_9structure_7element_Element (o=0x10eb418,
n=0x12b1530)
at sage/structure/element.c:23394
#4 0x00007ffff7d197ba in builtin_hasattr (self=<optimized out>,
args=<optimized out>)
at Python/bltinmodule.c:880
#5 0x00007ffff7d225b5 in call_function (oparg=<optimized out>,
pp_stack=0x7ffffffeccc0)
at Python/ceval.c:3706
#6 PyEval_EvalFrameEx (f=<optimized out>, throwflag=<optimized out>) at
Python/ceval.c:2389
#7 0x00007ffff7d242c9 in PyEval_EvalCodeEx (co=<optimized out>,
globals=<optimized out>,
locals=<optimized out>, args=<optimized out>, argcount=2, kws=0x0,
kwcount=0, defs=0x0,
defcount=0, closure=0x0) at Python/ceval.c:2968
#8 0x00007ffff7cb0596 in function_call (func=0x1c57230, arg=0x2299488,
kw=0x0)
at Objects/funcobject.c:524
#9 0x00007ffff7c8a763 in PyObject_Call (func=0x1c57230, arg=<optimized
out>, kw=<optimized out>)
at Objects/abstract.c:2492
#10 0x00007ffff7c973bf in instancemethod_call (func=0x1c57230,
arg=0x2299488, kw=0x0)
at Objects/classobject.c:2579
#11 0x00007ffff7c8a763 in PyObject_Call (func=0x1e725a0, arg=<optimized
out>, kw=<optimized out>)
at Objects/abstract.c:2492
#12 0x00007fffeab5dab6 in
__pyx_f_4sage_9structure_10parent_old_6Parent__coerce_c (
__pyx_v_self=0x1ca5650, __pyx_v_x=0x10eb418,
__pyx_skip_dispatch=<optimized out>)
at sage/structure/parent_old.c:3711
#13 0x00007fffeab5660e in
__pyx_f_4sage_9structure_10parent_old_6Parent_has_coerce_map_from_c_impl (
__pyx_v_self=0x1ca5650, __pyx_v_S=0x1089240) at
sage/structure/parent_old.c:4914
#14 0x00007fffeab55964 in
__pyx_pf_4sage_9structure_10parent_old_6Parent_11has_coerce_map_from_impl
(
__pyx_v_self=0x1ca5650, __pyx_v_S=0x1089240) at
sage/structure/parent_old.c:4802
#15 0x00007ffff7c8a763 in PyObject_Call (func=0x1f95d88, arg=<optimized
out>, kw=<optimized out>)
at Objects/abstract.c:2492
#16 0x00007fffeab58e41 in
__pyx_f_4sage_9structure_10parent_old_6Parent_has_coerce_map_from_c (
__pyx_v_self=0x1ca5650, __pyx_v_S=0x1089240,
__pyx_skip_dispatch=<optimized out>)
at sage/structure/parent_old.c:4659
#17 0x00007fffeab54737 in
__pyx_f_4sage_9structure_10parent_old_6Parent_coerce_map_from_c_impl (
__pyx_v_self=0x1ca5650, __pyx_v_S=0x1089240) at
sage/structure/parent_old.c:2638
#18 0x00007fffeab55f64 in
__pyx_pf_4sage_9structure_10parent_old_6Parent_2coerce_map_from_impl (
__pyx_v_self=0x1ca5650, __pyx_v_S=0x1089240) at
sage/structure/parent_old.c:2283
#19 0x00007ffff7c8a763 in PyObject_Call (func=0x1f83e18, arg=<optimized
out>, kw=<optimized out>)
at Objects/abstract.c:2492
#20 0x00007fffeab5a2a2 in
__pyx_f_4sage_9structure_10parent_old_6Parent_coerce_map_from_c (
__pyx_v_self=0x1ca5650, __pyx_v_S=0x1089240,
__pyx_skip_dispatch=<optimized out>)
at sage/structure/parent_old.c:1887
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11342#comment:18>
Sage <http://www.sagemath.org>
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