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#!/usr/bin/env python2.0
"""A comparison of Python's cStringIO and M2Crypto's MemoryBuffer,
the outcome of which is that MemoryBuffer suffers from doing too much
in Python.
Two way to optimise MemoryBuffer:
1. Create MemoryBufferIn and MemoryBufferOut a la StringI and StringO.
2. Have MemoryBuffer do all internal work with cStringIO. ;-)
"""
from cStringIO import StringIO
from M2Crypto.BIO import MemoryBuffer
from M2Crypto import m2
import profile
txt = 'Python, Smalltalk, Haskell, Scheme, Lisp, Self, Erlang, ML, ...'
def stringi(iter, txt=txt):
buf = StringIO()
for i in range(iter):
buf.write(txt)
out = buf.getvalue()
def membufi(iter, txt=txt):
buf = MemoryBuffer()
for i in range(iter):
buf.write(txt)
out = buf.getvalue()
def membuf2i(iter, txt=txt):
buf = MemoryBuffer()
buf.write(txt * iter)
out = buf.getvalue()
def cmembufi(iter, txt=txt):
buf = m2.bio_new(m2.bio_s_mem())
for i in range(iter):
m2.bio_write(buf, txt)
m2.bio_set_mem_eof_return(buf, 0)
out = m2.bio_read(buf, m2.bio_ctrl_pending(buf))
if __name__ == '__main__':
profile.run('stringi(10000)')
profile.run('cmembufi(10000)')
profile.run('membufi(10000)')
profile.run('membuf2i(10000)')
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