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Code Issues Projects Releases Packages Wiki Activity Actions 7

officially deprecated max_buffer_size

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This commit is contained in:
Benjamin Peterson 2009-03-26 17:10:29 +00:00
parent 1ef7c6bc85
commit 59406a9d85
4 changed files with 65 additions and 15 deletions
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21
Lib/_pyio.py
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@ -5,6 +5,7 @@ Python implementation of the io module.
import os
import abc
import codecs
import warnings
# Import _thread instead of threading to reduce startup cost
try:
from _thread import allocate_lock as Lock
@ -960,16 +961,20 @@ class BufferedWriter(_BufferedIOMixin):
The constructor creates a BufferedWriter for the given writeable raw
stream. If the buffer_size is not given, it defaults to
DEFAULT_BUFFER_SIZE. If max_buffer_size is omitted, it defaults to
twice the buffer size.
DEFAULT_BUFFER_SIZE.
"""
_warning_stack_offset = 2
def __init__(self, raw,
buffer_size=DEFAULT_BUFFER_SIZE, max_buffer_size=None):
raw._checkWritable()
_BufferedIOMixin.__init__(self, raw)
if buffer_size <= 0:
raise ValueError("invalid buffer size")
if max_buffer_size is not None:
warnings.warn("max_buffer_size is deprecated", DeprecationWarning,
self._warning_stack_offset)
self.buffer_size = buffer_size
self._write_buf = bytearray()
self._write_lock = Lock()
@ -1055,8 +1060,7 @@ class BufferedRWPair(BufferedIOBase):
reader and writer are RawIOBase objects that are readable and
writeable respectively. If the buffer_size is omitted it defaults to
DEFAULT_BUFFER_SIZE. The max_buffer_size (for the buffered writer)
defaults to twice the buffer size.
DEFAULT_BUFFER_SIZE.
"""
# XXX The usefulness of this (compared to having two separate IO
@ -1068,10 +1072,12 @@ class BufferedRWPair(BufferedIOBase):
The arguments are two RawIO instances.
"""
if max_buffer_size is not None:
warnings.warn("max_buffer_size is deprecated", DeprecationWarning, 2)
reader._checkReadable()
writer._checkWritable()
self.reader = BufferedReader(reader, buffer_size)
self.writer = BufferedWriter(writer, buffer_size, max_buffer_size)
self.writer = BufferedWriter(writer, buffer_size)
def read(self, n=None):
if n is None:
@ -1117,10 +1123,11 @@ class BufferedRandom(BufferedWriter, BufferedReader):
The constructor creates a reader and writer for a seekable stream,
raw, given in the first argument. If the buffer_size is omitted it
defaults to DEFAULT_BUFFER_SIZE. The max_buffer_size (for the buffered
writer) defaults to twice the buffer size.
defaults to DEFAULT_BUFFER_SIZE.
"""
_warning_stack_offset = 3
def __init__(self, raw,
buffer_size=DEFAULT_BUFFER_SIZE, max_buffer_size=None):
raw._checkSeekable()