ICL 1900 Series George 3 Operating System Commands

EXPRESS (EP)

Function

Informs the High Level Scheduler subject program that a particular job is of great urgency and should not be made to wait before being made fully started.

Format

  1. EXPRESS job number,text
  2. EXPRESS jobname,username,text

When format 1 is used, job number is the number that the system uses to identify a particular job. The operator can determine this number by means of a WHATJOBS command.

When format 2 is used, both jobname and username parameters must be present but their order is optional.

The text parameter is optional in both formats. If present, the specified text will be passed across when the High Level Scheduler is notified of an EXPRESS command. It is ignored by the standard subject program but may be used by an installation which has its own modified version of the H.L.S.

Forbidden contexts

NOT OPERATOR

Execution

The command checks whether the specified job exists and reports an error if it does not. The EXPRESS command has no effect for a system issued job; if it is issued for such a job the following message is output to the operator's console

    EXPRESS COMMAND IS NOT MEANINGFUL FOR A SYSTEM ISSUED JOB

If the specified job exists and is not system issued, the High Level Scheduler subject program is informed that an EXPRESS command has been issued for this job and one of the following messages is output to the operator's console, depending on which format of the command was used.

    EXPRESS COMMAND FOR JOBNUMBER x ACKNOWLEDGED
    EXPRESS COMMAND FOR jobname, username ACKNOWLEDGED

Examples

EXPRESS 3
EP FRED,:JONES
EXPRESS :JONES,FRED

Error Messages

z DOES NOT EXIST
NO SUCH JOB NUMBER AS z
z IS NOT A CORRECTLY FORMED NAME
z IS NOT A VALID NUMBER FORMAT
JOBNAME PARAMETER MISSING
USERNAME PARAMETER MISSING
PARAMETER MISSING

Notes

  1. The EXPRESS command should not be used with system issued jobs since these are made fully started automatically.

  2. The command makes no checks on the state of the job. Thus, if the specified job is already fully started, this will not be detected and the standard ACKNOWLEDGED message will be output.