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Diffstat (limited to 'Doc/lib/libstatcache.tex')
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diff --git a/Doc/lib/libstatcache.tex b/Doc/lib/libstatcache.tex new file mode 100644 index 0000000..46a697f --- /dev/null +++ b/Doc/lib/libstatcache.tex @@ -0,0 +1,53 @@ +\section{\module{statcache} --- + An optimization of \function{os.stat()}} + +\declaremodule{standard}{statcache} +\sectionauthor{Moshe Zadka}{mzadka@geocities.com} +\modulesynopsis{Stat files, and remember results.} + +The \module{statcache} module provides a simple optimization to +\function{os.stat()}: remembering the values of previous invocations. + +The \module{statcache} module defines the following functions: + +\begin{funcdesc}{stat}{path} +This is the main module entry-point. +Identical for \function{os.stat()}, except for remembering the result +for future invocations of the function. +\end{funcdesc} + +The rest of the functions are used to clear the cache, or parts of +it. + +\begin{funcdesc}{reset}{} +Clear the cache: forget all results of previous \code{stat}s. +\end{funcdesc} + +\begin{funcdesc}{forget}{path} +Forget the result of \code{stat(\var{path})}, if any. +\end{funcdesc} + +\begin{funcdesc}{forget_prefix}{prefix} +Forget all results of \code{stat(\var{path})} for \var{path} starting +with \var{prefix}. +\end{funcdesc} + +\begin{funcdesc}{forget_dir}{prefix} +Forget all results of \code{stat(\var{path})} for \var{path} a file in +the directory \var{prefix}, including \code{stat(\var{prefix})}. +\end{funcdesc} + +\begin{funcdesc}{forget_except_prefix}{prefix} +Similar to \function{forget_prefix()}, but for all \var{path} +\emph{not} starting with \var{prefix}. +\end{funcdesc} + +Example: + +\begin{verbatim} +>>> import os, statcache +>>> statcache.stat('.') +(16893, 2049, 772, 18, 1000, 1000, 2048, 929609777, 929609777, 929609777) +>>> os.stat('.') +(16893, 2049, 772, 18, 1000, 1000, 2048, 929609777, 929609777, 929609777) +\end{verbatim} |