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� �Cjc @ sF d Z d d l Z d d l Z d d d � � YZ d � Z d d d � � YZ d � Z d d! d � � YZ d � Z d d" d � � YZ d � Z d d# d � � YZ d � Z d � Z i d � Z d � Z d Z xq e e d � e e d � e e d � e e d � e e d � e e d � e e d � d e GHe d Z q� d S($ sA Find the maximum recursion limit that prevents interpreter termination. This script finds the maximum safe recursion limit on a particular platform. If you need to change the recursion limit on your system, this script will tell you a safe upper bound. To use the new limit, call sys.setrecursionlimit(). This module implements several ways to create infinite recursion in Python. Different implementations end up pushing different numbers of C stack frames, depending on how many calls through Python's abstract C API occur. After each round of tests, it prints a message: "Limit of NNNN is fine". The highest printed value of "NNNN" is therefore the highest potentially safe limit for your system (which depends on the OS, architecture, but also the compilation flags). Please note that it is practically impossible to test all possible recursion paths in the interpreter, so the results of this test should not be trusted blindly -- although they give a good hint of which values are reasonable. NOTE: When the C stack space allocated by your system is exceeded due to excessive recursion, exact behaviour depends on the platform, although the interpreter will always fail in a likely brutal way: either a segmentation fault, a MemoryError, or just a silent abort. NB: A program that does not use __methods__ can set a higher limit. i����Nt RecursiveBlowup1c B s e Z d � Z RS( c C s | j � d S( N( t __init__( t self( ( s9 /usr/lib64/python2.7/Tools/scripts/find_recursionlimit.pyR $ s ( t __name__t __module__R ( ( ( s9 /usr/lib64/python2.7/Tools/scripts/find_recursionlimit.pyR # s c C s t � S( N( R ( ( ( s9 /usr/lib64/python2.7/Tools/scripts/find_recursionlimit.pyt test_init' s t RecursiveBlowup2c B s e Z d � Z RS( c C s t | � S( N( t repr( R ( ( s9 /usr/lib64/python2.7/Tools/scripts/find_recursionlimit.pyt __repr__+ s ( R R R ( ( ( s9 /usr/lib64/python2.7/Tools/scripts/find_recursionlimit.pyR * s c C s t t � � S( N( R R ( ( ( s9 /usr/lib64/python2.7/Tools/scripts/find_recursionlimit.pyt test_repr. s t RecursiveBlowup4c B s e Z d � Z RS( c C s | | S( N( ( R t x( ( s9 /usr/lib64/python2.7/Tools/scripts/find_recursionlimit.pyt __add__2 s ( R R R ( ( ( s9 /usr/lib64/python2.7/Tools/scripts/find_recursionlimit.pyR 1 s c C s t � t � S( N( R ( ( ( s9 /usr/lib64/python2.7/Tools/scripts/find_recursionlimit.pyt test_add5 s t RecursiveBlowup5c B s e Z d � Z RS( c C s t | | � S( N( t getattr( R t attr( ( s9 /usr/lib64/python2.7/Tools/scripts/find_recursionlimit.pyt __getattr__9 s ( R R R ( ( ( s9 /usr/lib64/python2.7/Tools/scripts/find_recursionlimit.pyR 8 s c C s t � j S( N( R R ( ( ( s9 /usr/lib64/python2.7/Tools/scripts/find_recursionlimit.pyt test_getattr< s t RecursiveBlowup6c B s e Z d � Z RS( c C s | | d | | d S( Ni i ( ( R t item( ( s9 /usr/lib64/python2.7/Tools/scripts/find_recursionlimit.pyt __getitem__@ s ( R R R ( ( ( s9 /usr/lib64/python2.7/Tools/scripts/find_recursionlimit.pyR ? s c C s t � d S( Ni ( R ( ( ( s9 /usr/lib64/python2.7/Tools/scripts/find_recursionlimit.pyt test_getitemC s c C s t � S( N( t test_recurse( ( ( s9 /usr/lib64/python2.7/Tools/scripts/find_recursionlimit.pyR F s c C s� y d d l } Wn t k r) d GHd SXd } xv t j � D]h } y | | } w= Wn1 t k r� x! t d � D] } | g } qq Wn X| j | d d �| | | <q= Wd S( Ni����s cannot import cPickle, skipped!id t protocol( t cPicklet ImportErrort Nonet itertoolst countt KeyErrort ranget dumps( t _cacheR t lt nt i( ( s9 /usr/lib64/python2.7/Tools/scripts/find_recursionlimit.pyt test_cpickleI s c C sh t j | � | j d � r( | d GHn | GHt � | } y | � Wn t t f k r^ n Xd GHd S( Nt test_i s Yikes!( t syst setrecursionlimitt startswitht globalst RuntimeErrort AttributeError( R# t test_func_namet test_func( ( s9 /usr/lib64/python2.7/Tools/scripts/find_recursionlimit.pyt check_limitZ s i� R R R R R R R% s Limit of %d is fineid ( ( ( ( ( ( t __doc__R' R R R R R R R R R R R R R% R/ t limit( ( ( s9 /usr/lib64/python2.7/Tools/scripts/find_recursionlimit.pyt <module> s4