BEGINLOG

Syntax

            I32    U16A  I16     I16   I16
  BEGINLOG (index, data, length, mode, logstatus)

Parameters

index

32-bit signed integer by reference (required)

Passes access information to the user logging system. This is the value returned in the index parameter of the OPENLOG intrinsic.

data

16-bit unsigned integer array (required)

Passes the information to be logged. A log record contains 128 half words where 119 are available for writing data. For the most efficient use of log file space, structure arrays with lengths in multiples of 119 half words.

length

16-bit signed integer by reference (required)

Passes the length of the data. A positive value indicates half words; a negative value indicates bytes. If the length is greater than 119 half words (or 238 bytes), the information in data is divided into two or more physical log records.

mode

16-bit signed integer by reference (required)

Passes a value indicating whether the logging process should suspend the process if it cannot complete the request for service immediately. If it is not possible to log the transaction and mode is set to nowait, the BEGINLOG intrinsic indicates, through logstatus, that it could not complete the request:

Value	Meaning
0	Wait
1	Nowait

logstatus

16-bit signed integer by reference (required)

Returns a value, indicating the success/failure of the intrinsic call:

Value	Meaning
0	Successful
1	Nowait mode requested, and user logging process is busy
2	Parameter out of bounds
4	Incorrect index parameter passed
5	Incorrect mode parameter passed
9	Error occurred while writing
12	System out of disk space, user logging cannot proceed
14	Invalid access
15	End-of-file

Operation Notes

Related Information