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| ID | Category | Severity | Reproducibility | Date Submitted | Last Update | ||||
| 0006588 | [Squeak] Kernel | block | random | 08-02-07 11:36 | 12-01-08 23:03 | ||||
| Reporter | al | View Status | public | ||||||
| Assigned To | |||||||||
| Priority | high | Resolution | fixed | Platform | |||||
| Status | closed | OS | |||||||
| Projection | none | OS Version | |||||||
| ETA | none | Fixed in Version | 3.10 | Product Version | 3.10 | ||||
| Product Build | |||||||||
| Summary | 0006588: Broken Semaphore>>critical: leads to frozen processes in Delay | ||||||||
| Description |
David Shaffer: VNC doesn't respond to UI events, 0% cpu usage, several processes frozen in Delay although our Seaside server still responds. Andreas Raab: You're missing another batch of fixes that we have long applied to our servers. In this case it's the handling of Semaphore>>critical: (which is broken in all Squeak versions). |
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| Steps To Reproduce | |||||||||
| Additional Information | See mail http://lists.squeakfoundation.org/pipermail/squeak-dev/2007-July/119082.html [^] and answers to it. | ||||||||
| Attached Files |
 SemaTests-ar.cs [^] (1,413 bytes) 10-06-07 01:22 SemaCritical-ar.cs [^] (4,050 bytes) 10-06-07 01:35 |
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SYSTEM WARNING: Creating default object from empty value SYSTEM WARNING: Creating default object from empty value SYSTEM WARNING: Creating default object from empty value
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Notes |
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(0011237 - 196 - 208 - 208 - 208 - 208 - 208) GazzaGuru 10-05-07 22:16 |
Though the fixes help somewhat there is still a problem with termination of processes leading to over/under signaling of semaphores. In particular Seaside will terminate a process on timeout... |
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(0011239 - 422 - 460 - 460 - 460 - 460 - 460) andreas 10-06-07 01:26 |
I think the attached two change sets should do it. The first one (SemaTests-ar) provides tests for the "one too many" and "one too few" behavior as I understand it so far. The second one (SemaCritical-ar) tries to address the issues by cooperating between Process>>terminate and Semaphore>>critical:. Note that it is critically important (pun intended) to use Semaphore>>critical: from all of the other critical: variants. |
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(0011241 - 141 - 195 - 195 - 195 - 195 - 195) Keith_Hodges 10-06-07 10:48 |
"fix begin" Installer mantis bug: 6588 fix: 'SemaCritical-ar.cs'. "fix test" Installer mantis bug: 6588 fix: 'SemaTests-ar.cs'. "fix end" |
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(0011437 - 67 - 79 - 79 - 79 - 79 - 79) edgardec 11-15-07 18:04 |
This is 7153SemaCritical-ar.cs in the 3.10.1 updates. Thanks all |
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(0012820 - 55 - 55 - 55 - 55 - 55 - 55) KenCausey 12-01-08 23:03 |
Harvested as update 7153 and released with Squeak 3.10. |
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Issue History |
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| Date Modified | Username | Field | Change |
| 08-02-07 11:36 | al | New Issue | |
| 08-02-07 11:36 | al | File Added: SemaphoreCritical-ar.1.cs | |
| 08-02-07 11:56 | al | Issue Monitored: al | |
| 08-03-07 00:29 | wiz | Relationship added | related to 0004882 |
| 10-05-07 22:13 | matthewf | Relationship added | related to 0006576 |
| 10-05-07 22:16 | GazzaGuru | Note Added: 0011237 | |
| 10-06-07 01:22 | andreas | File Added: SemaTests-ar.cs | |
| 10-06-07 01:23 | andreas | File Added: SemaCritical-ar.cs | |
| 10-06-07 01:24 | andreas | File Deleted: SemaphoreCritical-ar.1.cs | |
| 10-06-07 01:26 | andreas | Note Added: 0011239 | |
| 10-06-07 01:35 | andreas | File Deleted: SemaCritical-ar.cs | |
| 10-06-07 01:35 | andreas | File Added: SemaCritical-ar.cs | |
| 10-06-07 10:48 | Keith_Hodges | Note Added: 0011241 | |
| 10-09-07 01:40 | matthewf | Relationship added | has duplicate 0006587 |
| 10-09-07 01:43 | matthewf | Relationship added | has duplicate 0006582 |
| 10-09-07 20:37 | edgardec | Status | new => resolved |
| 10-09-07 20:37 | edgardec | version | => 3.10 |
| 11-15-07 18:04 | edgardec | Note Added: 0011437 | |
| 12-18-07 15:32 | lewis | Issue Monitored: lewis | |
| 12-01-08 23:03 | KenCausey | Status | resolved => closed |
| 12-01-08 23:03 | KenCausey | Note Added: 0012820 | |
| 12-01-08 23:03 | KenCausey | Resolution | open => fixed |
| 12-01-08 23:03 | KenCausey | Fixed in Version | => 3.10 |
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