.z.exit update when STP is in memory batch mode (#707)

* Update stplog.q

When the STP is in memorybatch mode, .z.exit will now update log file with whatever data is in memory during unexpected shutdown.

* Update stplog.q

Stylistic update based off Jonathon McMurray's comments.

* Update stplog.q

Comment alignment.

* Update stplog.q

Fixing comments to align with the rest of the function.

Author: skairulla

code/segmentedtickerplant/stplog.q

@@ -283,6 +283,14 @@ init:{[dbname]
 .dotz.set[`.z.exit;{
   if[not x~0i;.lg.e[`stpexit;"Bad exit!"];:()];
   .lg.o[`stpexit;"Exiting process"];
+
+  // flushing in memory data to disk during unexpected shutdown when batchmode is set to memorybatch
+  if[.stplg.batchmode=`memorybatch;      
+     .lg.o[`stpexit;"STP shutdown unexpectedly, batchmode = `memorybatch, therefore flushing any remaining data to the on-disk log file"];
+     .stplg.zts.memorybatch[];
+     .lg.o[`stpexit; "Complete!"]
+    ];
+
   // exit before logs are touched if process is an sctp NOT in create mode
   if[.sctp.chainedtp and not .sctp.loggingmode=`create; :()];
   .lg.o[`stpexit;"Closing off log files"];