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Text File | 1990-07-19 | 4.3 KB | 89 lines | [TEXT/pdos] |
- DirFF -- Display directory of files contained in the FastFile subsystem.
-
- Syntax DirFF
-
- Description In version 1.1 of the ORCA shell, ByteWorks introduced the FastFile
- high level file caching subsystem. This system works by loading
- and managing disk images of files in memory for quicker access by
- compilers, linkers, and other tools that work with the FastFile
- system. (See the appropropriate Orca/M documentation for details.)
-
- One side effect of the FastFile system is that memory is used to
- keep these file images in memory. This means that less memory is
- available for use by the rest of the system. This utility is used
- to display exactly which files are currently being maintained by
- the subsystem, and the various attributes of the file. This
- directory listing is very much like a normal directory listing
- produced by the 'Catalog' command, with the following differences.
-
- The 'Blocks' field contain the number of disk blocks that are used
- (or would be used) by the disk copy of the file. If an asterisk
- (*) appears after the number for a particular file, it means that
- the memory block for the file within the FastFile system has been
- purged, and that the memory image of the file is not actually using
- any memory.
-
- The 'Flags' field corresponds to the flags byte of the FastFile
- system call. If a 'D' appears in this field, it means that the
- file exists on disk as well as within the FastFile system. In some
- cases, parts of the development system can pass files between
- themselves by using the FastFile system entirely and skipping the
- actual writing of the file to disk. For example, when the +M flag
- is specified in an ASML command, the assembler creates the object
- file in the FastFile system only for use by the Linker. The object
- file does not get written to disk.
-
- If a 'P' appears in the flags field, it means that FastFile system
- will allow a FastFile PURGE call on this particular file.
-
- The two digits in the remainder of the 'Flags' field correspond to
- the current purge level of the memory block containing the file.
- This can be any number from '00' to '03'. See the Memory Manager
- chapter of the Apple IIGS Toolbox Reference Manual for a
- description of purge levels.
-
- At the conclusion of the directory listing, the utility will
- display the total number of files found within the FastFile system,
- and an accumulated total of the number of bytes of memory used by
- files within the FastFile system. This value is determined by
- performing a GetHandleSize on each non-purged file handle found
- within the FastFile system.
-
- Input None.
-
- Ouput The directory listing is displayed on the standard output device.
-
- Diagnostics Error messages are written to the diagnostic output device.
-
- Status The following status codes may be returned to the APW shell:
-
- 0 No errors.
- -1 Command-Period pressed.
- <any> Any other return value is the disk error number returned by
- a GS/OS or FastFile call.
-
- Options None.
-
- Example With the following command entered on the command line:
-
- DirFF
-
- The following output was produced:
-
- Files in FastFile system:
-
- Name Type Blocks Modified Created Access Flags
-
- CLRFF TXT 5 18 Jun 90 12:01 18 Jun 90 10:55 DNB WR DP 00
- DIRFF TXT 3 18 Jun 90 11:44 18 Jun 90 10:55 DNB WR DP 00
- PAGEEJECT TXT 3* 18 Jun 90 11:28 18 Jun 90 10:55 DNB WR DP 02
- EJECT TXT 5 18 Jun 90 11:24 18 Jun 90 10:55 DNB WR DP 00
- SETFILE TXT 9 18 Jun 90 10:55 18 Jun 90 10:55 DNB WR DP 00
- SYSTABS SRC 7 10 Aug 89 18:43 9 Nov 88 15:00 DNB WR DP 00
- SYSEMAC BIN 8 25 Jul 89 14:39 9 Nov 88 15:00 DNB WR DP 00
-
- 7 files for a total of 48309 bytes of memory used.
-
-
- See Also ClrFF.
-