The AXREXX invoker can limit the amount of time that an exec can run by using the TIMELIMIT/TIMEINT keywords. When the time limit is reached, System REXX will invoke Halt Interpretation (HI) in the REXX environment where the exec is running. However, note that compiled execs must be compiled with the %TESTHALT option for the HI to work.
If the exec still does not complete after waiting for some time, the task running the exec will be detached. Invokers who specify a time limit should realize that time out is an error condition and that for SYNC=YES invokers, the final values of output arguments and variables will not be returned to the AXREXX invoker.
AXREXX supports an interface to CANCEL an exec. SYNC=NO AXREXX invokers can obtain the Request Token via the OREQTOKEN parameter for later input to AXREXX CANCEL. Cancel is processed as if the exec timed out.