Parameters

The following table describes the parameters:

Parameters Description
TYPE This is the address of a one character value indicating data streams to write to
  • L - log data stream only
  • T - trace data stream only
  • B - both log and trace data streams
  • A - both log and trace data streams
  • Anything else - log data stream only
HUB This is the address of a 4 character value indicating the HUB Name
LOGREC This is the address of the length followed by the data to be written to the stream (since the length is a half word, the amount of data is limited to 32767). The actual max for the data is based on the z/OS System Logger Stream definition.
REASON This is the address of a fullword (int) that will contain a code number based on the results of the call.
int This is the return code of the call (0 means call was successful).

The following table describes the reason codes in Substation ES:

Codes Description
8101

Indicate there is no active HUB with the name (4 characters) provided.

Application program terminated with return code 12.

User Response: Check the HUB is up and running and the HUB name used is correct.

Note: All other reason codes are returned from the z/OS function IXGWRITE.

Example: COBOL format of data structure and the call. 

 01  HUB-NAME          PIC X(4) VALUE SPACES.    
01  WS-TYPE           PIC X VALUE 'L'.          
01  WS-REASON         PIC S9(8) COMP.           
01  WS-RETURN         PIC S9(8) COMP.           
01  WS-LOGREC.                                  
    05  WS-LOG-LEN    PIC S9(4) COMP-1.         
    05  WS-LOG-DATA   PIC X(32767) VALUE SPACES 
                                                
CALL "SXGAWLOG"                                 
     USING BY REFERENCE HUB-NAME,               
           BY REFERENCE WS-TYPE,                
           BY REFERENCE WS-LOGREC,              
           BY REFERENCE WS-REASON,              
           RETURNING    WS-RETURN               
END-CALL.

Example: C format of data structure and the call. 

typedef struct          
{                       
  short  length;        //length of data in next array
  char   data[32767];    
} logrec; 

#include “SXGHWLOG.h”
int RC;
int reason;
RC = SXGAWLOG(
     “HUBA”,
     “L”,
     &logrec, 
     &reason);