Re: Raising exceptions in RPG

David Wright wrote:

Can RPG use the signal() or raise() C functions directly to force a
procedure to jump to the ON-ERROR part of a MONITOR block? I have not had
any luck finding examples or documentation of using these from RPG.

You're confusing error handling with signals. Two very different things!

To trigger the ON-ERROR, I suggest sending a program message via the QMHSNDPM API. Try searching for that, I think you'll have much more luck finding examples.

signal() and raise() are for POSIX signal handling (signal() registers a procedure that receives signals -- a better API for that is sigaction -- and raise() triggers that signal in the current job. There's also kill() which sends a signal to another job...)

Really signal(), raise(), kill, sigaction(), etc are all Unix-type APIs provided to make it easier to port stuff from Unix. There are places that they're useful in RPG, such as when using the spawn(), sleep(), or setitimer() APIs. But, they're not used in error hnadling in RPG. That's what program messages are for.