When the main task ends all 0-127 memory goes away. Actually, if memory serves me correctly, all memory goes away EXCEPT for the common sub-pools, 225-228, 231, 239, 241, 245-248 that have to be explicitly allocated and freed.
Chris Blaicher Technical Architect Mainframe Development P: 201-930-8234 | M: 512-627-3803 E: [email protected] Syncsort Incorporated 2 Blue Hill Plaza #1563 Pearl River, NY 10965 www.syncsort.com Data quality leader Trillium Software is now a part of Syncsort. -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Thomas David Rivers Sent: Thursday, March 29, 2018 8:15 AM To: [email protected] Subject: Subpool sharing and subpool freeing at main task termination The documentation for "Subpool handling" from the Assembler Services Guide indicates that (for subpools 0-127, which are task-related) "when the task terminates, the system automatically releases any of the subpool from 0 through 127 that are unshared and are associated with the task." It then goes on to note that the SHSPV and SHSPL option on the ATTACH/ATTACHX macro can be used to indicate that a subpool is to be shared (other than subpool 0 which is, by default, shared.) My question is the attribute of "shared" - once a subpool is marked shared, can it ever be marked non-shared again? Once all sub-tasks end, does it revert back to non-shared, and thus when the main task ends, would the subpool be released by the OS? I can't seem to find any commentary on that question... That is - if a multi-task address space shares a subpool; is it the responsibilty of the main task to release the shared subpool, or will the OS do this when the main task ends? - Thanks - - Dave Rivers - -- [email protected] Work: (919) 676-0847 Get your mainframe programming tools at http://www.dignus.com ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ________________________________ ATTENTION: ----- The information contained in this message (including any files transmitted with this message) may contain proprietary, trade secret or other confidential and/or legally privileged information. Any pricing information contained in this message or in any files transmitted with this message is always confidential and cannot be shared with any third parties without prior written approval from Syncsort. This message is intended to be read only by the individual or entity to whom it is addressed or by their designee. If the reader of this message is not the intended recipient, you are on notice that any use, disclosure, copying or distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the sender and/or Syncsort and destroy all copies of this message in your possession, custody or control. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
