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FileCache 5.8.8

  Date Added: May 02, 2010  |  Visits: 572

FileCache

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FileCache is a Perl module to keep more files open than the system permits. SYNOPSIS use FileCache; # or use FileCache maxopen => 16; cacheout $mode, $path; # or cacheout $path; print $path @data; $fh = cacheout $mode, $path; # or $fh = cacheout $path; print $fh @data; The cacheout function will make sure that theres 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 systems maximum number of file descriptors, or the suggested maximum maxopen. cacheout EXPR The 1-argument form of cacheout will open a file for writing (>) on its first use, and appending (>>) thereafter. Returns EXPR on success for convenience. You may neglect the return value and manipulate EXPR as the filehandle directly if you prefer. 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 -| To pass supplemental arguments to a program opened with |- or -| append them to the command string as you would system EXPR. Returns EXPR on success for convenience. You may neglect the return value and manipulate EXPR as the filehandle directly if you prefer. CAVEATS 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. Although FileCache can be used with piped opens (-| or |-) doing so is strongly discouraged. If FileCache finds it necessary to close and then reopen a pipe, the command at the far end of the pipe will be reexecuted - the results of performing IO on FileCached pipes is unlikely to be what you expect. The ability to use FileCache on pipes may be removed in a future release. FileCache does not store the current file offset if it finds it necessary to close a file. When the file is reopened, the offset will be as specified by the original open file mode. This could be construed to be a bug..

Requirements: No special requirements
Platforms: Linux
Keyword: Expr File Filecache Files Libraries Module Open Path Perl Module Programming System
Users rating: 0/10

License: Freeware Size: 12.2 MB
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