The spawn() API

Hello Alex,

On 5/26/2016 2:09 AM, amunra@xxxxxx wrote:

Speaking about not CL technique.
Does anybody use spawn() API to create a separate jobs?
Some years ago I tried to use it, but I didn't find the way to create job
in different subsystems.
Does anyone know if there is a way to run jobs in QBATCH subsystem?

I use the spawn() API quite often. But it is important to understand that it does not simply submit a new job -- instead it creates a "child process". Your job that calls spawn() is considered it's parent.

Due to the nature of a child process, it must always be in the same subsystem as the parent job. So spawn() cannot cause a job to run in a different subsystem.

There are other things about child processes that are different, too... for example, even after the child process ends, some memory from it is kept around until the parent process calls wait or waitpid to get it's exit status, etc. Also, child processes inherit a number of things from the parent. For details on all these things, see the manual for spawn() in the IBM Knowledge Center.

For what you are doing, you might consider using the SBMJOB command instead of the spawn() API.

-SK