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remove usage of the deprecated max_buffer_size

This commit is contained in:
Benjamin Peterson 2009-03-05 22:33:59 +00:00
parent 36a30cefd7
commit 394ee00993
2 changed files with 14 additions and 14 deletions
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15
Doc/library/io.rst
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@ -505,8 +505,9 @@ Buffered Streams
The constructor creates a :class:`BufferedWriter` for the given writeable
*raw* stream. If the *buffer_size* is not given, it defaults to
:data:`DEFAULT_BUFFER_SIZE`. If *max_buffer_size* is omitted, it defaults to
twice the buffer size.
:data:`DEFAULT_BUFFER_SIZE`.
*max_buffer_size* is unused and deprecated.
:class:`BufferedWriter` provides or overrides these methods in addition to
those from :class:`BufferedIOBase` and :class:`IOBase`:
@ -532,8 +533,9 @@ Buffered Streams
*reader* and *writer* are :class:`RawIOBase` objects that are readable and
writeable respectively. If the *buffer_size* is omitted it defaults to
:data:`DEFAULT_BUFFER_SIZE`. The *max_buffer_size* (for the buffered writer)
defaults to twice the buffer size.
:data:`DEFAULT_BUFFER_SIZE`.
*max_buffer_size* is unused and deprecated.
:class:`BufferedRWPair` implements all of :class:`BufferedIOBase`\'s methods.
@ -545,8 +547,9 @@ Buffered Streams
The constructor creates a reader and writer for a seekable raw stream, given
in the first argument. If the *buffer_size* is omitted it defaults to
:data:`DEFAULT_BUFFER_SIZE`. The *max_buffer_size* (for the buffered writer)
defaults to twice the buffer size.
:data:`DEFAULT_BUFFER_SIZE`.
*max_buffer_size* is unused and deprecated.
:class:`BufferedRandom` is capable of anything :class:`BufferedReader` or
:class:`BufferedWriter` can do.

13
Lib/_pyio.py
View File

@ -971,9 +971,6 @@ class BufferedWriter(_BufferedIOMixin):
if buffer_size <= 0:
raise ValueError("invalid buffer size")
self.buffer_size = buffer_size
self.max_buffer_size = (2*buffer_size
if max_buffer_size is None
else max_buffer_size)
self._write_buf = bytearray()
self._write_lock = Lock()
@ -1000,12 +997,12 @@ class BufferedWriter(_BufferedIOMixin):
try:
self._flush_unlocked()
except BlockingIOError as e:
if len(self._write_buf) > self.max_buffer_size:
# We've hit max_buffer_size. We have to accept a
# partial write and cut back our buffer.
overage = len(self._write_buf) - self.max_buffer_size
if len(self._write_buf) > self.buffer_size:
# We've hit the buffer_size. We have to accept a partial
# write and cut back our buffer.
overage = len(self._write_buf) - self.buffer_size
written -= overage
self._write_buf = self._write_buf[:self.max_buffer_size]
self._write_buf = self._write_buf[:self.buffer_size]
raise BlockingIOError(e.errno, e.strerror, written)
return written