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Clarified new fsync() docs.

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Tim Peters 2003-04-23 19:47:14 +00:00
parent 5eccabc730
commit 2d1c846b73
1 changed files with 5 additions and 4 deletions
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Doc/lib/libos.tex
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@ -448,14 +448,15 @@ Availability: \UNIX.
\end{funcdesc} \end{funcdesc}
\begin{funcdesc}{fsync}{fd} \begin{funcdesc}{fsync}{fd}
Force write of file with filedescriptor \var{fd} to disk. Force write of file with filedescriptor \var{fd} to disk. On \UNIX,
this calls the native \cfunction{fsync()} function; on Windows, the
MS \cfunction{_commit()} function.
On Windows this calls the MS \cfunction{_commit()} function. If you're If you're starting with a Python file object \var{f}, first do
starting with a Python file object \var{f}, first do
\code{\var{f}.flush()}, and then do \code{os.fsync(\var{f}.fileno()}, \code{\var{f}.flush()}, and then do \code{os.fsync(\var{f}.fileno()},
to ensure that all internal buffers associated with \var{f} are written to ensure that all internal buffers associated with \var{f} are written
to disk. to disk.
Availability: \UNIX, and Windows starting in 2.3. Availability: \UNIX, and Windows starting in 2.2.3.
\end{funcdesc} \end{funcdesc}
\begin{funcdesc}{ftruncate}{fd, length} \begin{funcdesc}{ftruncate}{fd, length}