what is cleanup.c523, zdrv.cpp406, ipcmisc.c299, jdb_exef.c4913?

Hi,

1_from this log:

61734932 Wed Jan 15 13:11:33 2014 cleanup.c523
 PROCESS ID: 41746474 not active on ******* for Job Name: R5843070_ECSM04_6500315_PDF.
 Updating job table to status E.
 It was set to an "E" Status by the Cleanup program that runs at startup.

what is cleanup.c523?

2_and from this log:

30933182/1 MAIN_THREAD                        Wed Jan 15 13:00:16.184596 zdrv.cpp389
 Terminating Z driver

30933182/1 MAIN_THREAD                        Wed Jan 15 13:00:16.186830 zdrv.cpp406
 Calling freeSession

30933182/1 MAIN_THREAD                        Wed Jan 15 13:00:16.386004 ipcmisc.c299
 API ipcSawUnregisterProcV1 : process 30933182 unregistered in entry 177
 
what is  zdrv.cpp406, ipcmisc.c299?

3_and:

Failed to validate request handle

30933182/1 WRK:Starting jdeCallObject         Wed Jan 15 13:00:08.723169 jdb_exef.c4913
 JDB3300006 - Failed to validate request handle