FileCache Dokumentation zu Perl 5.8.0 | Download als POD | Wie kann ich hier etwas ändern?

NAME

FileCache - keep more files open than the system permits

SYNOPSIS

    use FileCache;
    # or
    use FileCache maxopen => 16;

    cacheout $path;
    print $path @data;

    cacheout $mode, $path;
    print $path @data;

DESCRIPTION

The cacheout function will make sure that there's a filehandle open for reading or writing available as the pathname you give it. It automatically closes and re-opens files if you exceed your system's maximum number of file descriptors, or the suggested maximum.

cacheout EXPR

The 1-argument form of cacheout will open a file for writing ( '>' ) on it's first use, and appending ( '>>' ) thereafter.

cacheout MODE, EXPR

The 2-argument form of cacheout will use the supplied mode for the initial and subsequent openings. Most valid modes for 3-argument open are supported namely; '>' , '+>' , '<' , '<+' , '>>' , = '|-' = and = '-|' =

CAVEATS

If you use cacheout with '|-' or '-|' you should catch SIGPIPE and explicitly close the filehandle., when it is closed from the other end some cleanup needs to be done.

While it is permissible to close a FileCache managed file, do not do so if you are calling FileCache::cacheout from a package other than which it was imported, or with another module which overrides close . If you must, use FileCache::cacheout_close .

BUGS

sys/param.h lies with its NOFILE define on some systems, so you may have to set maxopen ( $FileCache::cacheout_maxopen ) yourself.

-- HaraldBongartz - 06 Nov 2004