Re: CEE4ABN

["Leif Svalgaard" <leif@xxxxxxxx>]

thanks Steve (and others). I'm working on something like this,
but just thought I would check if I had overlooked something
obvious. It is, however, still something of a pain to do what should (?)
have been trivial (like CEE4ABN). For you ILE folks: yes I know,
why not just go ILE...  (I've all the standard reasons, some good,
most bad).


----- Original Message -----
From: Steve Richter <srichter@AutoCoder.com>
To: <midrange-l@midrange.com>
Sent: Thursday, November 01, 2001 9:49 AM
Subject: Re: CEE4ABN


>
> ----- Original Message -----
> From: "Leif Svalgaard" <leif@leif.org>
> To: <midrange-l@midrange.com>
>
> > Anyone of the programs might discover a fatal error
> > and decide to quit altogether. One way is to return
> > with a return-code that says 'fatal error'; the caller
> > checks that and returns with 'fatal error', etc all the
> > way up to A that returns and the job ends (if in batch).
> >
> > All this checking is cumbersome, so I'm looking for
> > a shortcut that ends the job immediately, like CEE4ABN.
> >
>
> Leif,
>
> Your job starts from a main cl pgm, call it "MAINCL".  This cl pgm calls
> your PgmA, which calls PgmB, PgmC and PgmD.
>
> PgmC discovers the fatal error. In PgmC, call cl pgm LEIF4ABN with 2 parms:
> ErrorMsg, NameOfMainCl.
>
> LEIF4ABN is coded as such:
>
> PGM  ( &ErrMsg &MainPgmNam )
> DCL &ErrMsg *char 80
> DCL &MainPgmNam *char 10
>
> SNDPGMMSG MSGID(CPF9898) MSGF(QCPFMSG) MSGDTA(&ErrMsg')   TOPGMQ(*SAME
> (&MainPgmNam)) MSGTYPE(*ESCAPE)
>
> EndPgm
>
> Your main cl pgm has a global monitor for CPF9898 like so:
> MONMSG MsgId(CPF9898) Exec( GoTo PgmAbnEnd)
>
> When LEIF4ABN sends the *Escape message to the MainCl pgm, all the pgms in
> the call stack above the target pgm are ended automatically.  ( This is one
> of the many incredibly  well thought out features built into the System38
by
> its long gone genius creators. )
>
> You can even send the *Escape msg to *PRV of MainCL.  This will end all the
> pgms including MainCl. The receiving pgm in this case will be QCMD. When it
> receives an *Escape message, it ends the job and send the "job ended
> abnormally" msg to user who submitted the job.
>
> Another variable could be to send the *Escape message direct to QCMD.  This
> removes any special coding from MainCl. Only side affect:  You will get the
> "job ended abnormally" msg when maybe you are doing more of a controlled
> that you want MainCl to handle in a customized way.
>
> hth,
>
> Steve Richter
>
>
>
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