| Title | AWL does not recycle memory to the arena. |
| Status | closed |
| Priority | optional |
| Assigned user | Gareth Rees |
| Organization | Ravenbrook |
| Description | AWL does not recycle memory to the arena. An AWL pool will recycle memory but it only makes that memory available to the same pool. What it should do is return any memory that it can to the arena so that it can be reused by any pool. |
| Analysis | This is a kind of deliberate feature of the design. Doesn't mean it's a good thing though. Currently AWL doesn't easily know when a segment is entirely free and can therefore be returned to the arena, though I see no particular reason why AWLReclaim couldn't do this. |
| How found | inspection |
| Evidence | [1] http://www.ravenbrook.com/project/mps/master/code/poolawl.c |
| Observed in | 1.108.0 |
| Created by | David Jones |
| Created on | 2007-07-19 16:58:39 |
| Last modified by | Gareth Rees |
| Last modified on | 2014-04-30 16:34:40 |
| History | 2007-07-19 DRJ Created. 2013-03-19 GDR Assigned to RB. 2013-06-16 RB Downgraded to "optional" as this isn't affecting anyone (see job003499). |
| Change | Effect | Date | User | Description |
|---|---|---|---|---|
| 185906 | closed | 2014-04-30 16:34:40 | Gareth Rees | AWL now returns segments to the arena when they are free. |