Re: link list returned from service program

The memory you allocate with %ALLOC() will be freed up when your program de-allocates it, or when the activation group ends. (Which will happen automatically if the job ends.)

In your original message you say "after the service program is destroyed from the activation group?". I don't exactly understand what that means... how can a service program be "destroyed from the activation group"?? Do you mean that the activation group has ended? Or do you mean that the service program has returned to the caller? AFIAK, there's no way to remove a service program from memory without reclaiming the activation group.

Anyway -- the point is... your memory from %ALLOC will remain til the activation group ends. So it's not safe to use after the activation group ends.

I asked for more info before because you didn't say where the memory came from... if it was allocated in a user space, or if it was a field in the service program, or in static/automatic storage within the service program, etc, then my answer might've been different.


Lim Hock-Chai wrote:

Can you be more specific?

In my service program, I do %alloc(%size(myDS)). This allocated memory
is then added to the list like myDSLast.next = myDS.... (The standard
link list stuff)