$FiStat: Difference between revisions
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<td>A string of data. If the string is exactly four bytes, it contains a binary [[#Return codes|error code]]. | <td>A string of data. If the string is exactly four bytes, it contains a binary [[#Return codes|error code]]. | ||
<p> | <p> | ||
Otherwise, the first four bytes contain the binary number of milliseconds that the Online has been up. This provides a convenient number for calculating rates for the statistics. </p> | Otherwise, the first four bytes contain the unsigned binary number of milliseconds that the Online has been up. This provides a convenient number for calculating rates for the statistics. </p> | ||
<p> | <p> | ||
The next ten bytes contain the blank-padded file name, then follows two bytes containing the binary file number. This means that the actual data starts at offset 16 (byte number 17) in the result string.</p></td></tr> | The next ten bytes contain the blank-padded file name, then follows two bytes containing the binary file number. This means that the actual data starts at offset 16 (byte number 17) in the result string.</p></td></tr> | ||
Revision as of 14:55, 4 October 2016
Retrieve file's statistics into string
Note: Many $functions have been deprecated in favor of Object Oriented methods. There is no OO equivalent for the $FiStat function.
This function allows retrieval of a specific file's statistics into a string.
Syntax
%string = $FiStat(stat_list, file_num)
Syntax terms
| %string | A string of data. If the string is exactly four bytes, it contains a binary error code.
Otherwise, the first four bytes contain the unsigned binary number of milliseconds that the Online has been up. This provides a convenient number for calculating rates for the statistics. The next ten bytes contain the blank-padded file name, then follows two bytes containing the binary file number. This means that the actual data starts at offset 16 (byte number 17) in the result string. |
|---|---|
| stat_list | a string of blank-delimited words indicating the statistics to be returned. The length of each returned statistic is always a multiple of four bytes. This facilitates the use of $StatD with the returned string. For more information about available statistics, see File statistics displayed in SirMon. |
| file_num | The file number of the file for which data is to be returned. |
Return codes
-5 Required parameter not specified -12 Invalid parameter (argument 2 > NUSERS, or invalid name in stat_list) -13 STAT not linked in -14 Result string would be longer than 255 bytes -15 File no longer open
Example
The following program displays some totals for file 0 (always CCATEMP).
Begin %data IS STRING LEN 255 %data = $FiStat('DKIO CFRCONF CFRQUEU', 0) IF $Len(%data) = 4 THEN PRINT '$FISTAT ERROR... RC = ' WITH $Unbin(%data) STOP END IF PRINT 'FILENAME = ' WITH $Substr(%data, 5, 10) PRINT 'DKIO = ' WITH $Unbin( $Substr(%data, 17, 4) ) PRINT 'CFRCONF = ' WITH $Unbin( $Substr(%data, 21, 4) ) PRINT 'CFRQUEU = ' WITH $Unbin( $Substr(%data, 25, 4) ) End