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SF 964876 mapping a 0 length file 

Document that it can't be done on Windows.
This commit is contained in:
Tim Peters 2004-06-06 16:51:46 +00:00
parent de48307f76
commit 0b4d1ee29d
1 changed files with 10 additions and 8 deletions
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Doc/lib/libmmap.tex
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@ -42,9 +42,11 @@ the underlying file.
\begin{funcdesc}{mmap}{fileno, length\optional{, tagname\optional{, access}}}
\strong{(Windows version)} Maps \var{length} bytes from the file
specified by the file handle \var{fileno}, and returns a mmap
object. If \var{length} is \code{0}, the maximum length of the map
will be the current size of the file when \function{mmap()} is
called.
object. If \var{length} is larger than the current size of the file,
the file is extended to contain \var{length} bytes. If \var{length}
is \code{0}, the maximum length of the map is the current size
of the file, except that if the file is empty Windows raises an
exception (you cannot create an empty mapping on Windows).
\var{tagname}, if specified and not \code{None}, is a string giving
a tag name for the mapping. Windows allows you to have many