Automatic or Static Storage?
August 27, 2008 Susan Gantner
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If you write RPG subprocedures, you should know about the differences between automatic and static storage. (If you don’t write subprocedures, shame on you!) I’ve found that many writers and/or users of subprocedures don’t fully understand the differences. So let’s start at the beginning. By default, fields (i.e., stand-alone fields, data structures, arrays, etc.) defined inside a subprocedure (a.k.a. local fields) use automatic storage. This means that the storage doesn’t exist until the procedure is called and it is cleaned up when the procedure returns to its caller. Of course, since the storage goes away between calls to the procedure, |
