> -----Original Message----- > From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On > Behalf Of (IBM Mainframe Discussion List) > Sent: Wednesday, November 22, 2006 6:57 AM > To: [email protected] > Subject: Re: Any issues with application programs write protecting > themselves? > > >It is not necessary to UNPROTECT storage before freeing it. > >Jim Mulder z/OS System Test IBM Corp. Poughkeepsie, NY > In z/OS V1R6.0 MVS System Codes doc the following ABENDs are documented > for > FREEMAINs involving protected storage: > 605-08, 605-10, 605-18, and B78-10. > > Bill Fairchild None of those apply to FREEMAIN of write-protected storage (PGSER PROTECT).
ISTR the abend occuring in pre-OS/390 days, but my recall is hazy. It could be that I am confusing store-protected with page-fixed. FREEMAIN of page-fixed I believe is still a no-no. Anyway, my coding style is to "undo" whatever I did before my program ends. If I page-fix it, then I release it. If I allocate it, I unallocate it. If I write-protect it, then I make it read-write. I am generally averse to acquiring a resource, then relying on the operating system to release it. Jeffrey D. Smith Principal Product Architect Farsight Systems Corporation 700 KEN PRATT BLVD. #204-159 LONGMONT, CO 80501-6452 303-774-9381 direct 303-484-6170 FAX http://www.farsight-systems.com/ comments are invited on my encryption project ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
