[SERVER-26323] Evaluate correctness of GCC __atomics implementation in gperftools Created: 26/Sep/16 Updated: 15/Mar/17 Resolved: 15/Mar/17 |
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| Status: | Closed |
| Project: | Core Server |
| Component/s: | Build |
| Affects Version/s: | None |
| Fix Version/s: | None |
| Type: | Bug | Priority: | Major - P3 |
| Reporter: | Andrew Morrow (Inactive) | Assignee: | Andrew Morrow (Inactive) |
| Resolution: | Done | Votes: | 0 |
| Labels: | None | ||
| Remaining Estimate: | Not Specified | ||
| Time Spent: | Not Specified | ||
| Original Estimate: | Not Specified | ||
| Issue Links: |
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| Backwards Compatibility: | Fully Compatible | ||||
| Operating System: | ALL | ||||
| Sprint: | Platforms 2016-10-10, Platforms 2017-03-06, Platforms 2017-03-27 | ||||
| Participants: | |||||
| Linked BF Score: | 25 | ||||
| Description |
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During earlier porting work, we forced GPerftools to use the GCC __atomic API rather than the per-architecture hand-rolled assembly. However, we have some indirect evidence gathered while investigating |
| Comments |
| Comment by Githook User [ 15/Mar/17 ] |
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Author: {u'username': u'acmorrow', u'name': u'Andrew Morrow', u'email': u'acm@mongodb.com'}Message: Revert " This reverts commit 4435e71c4e6ddef7086f626d87eb90315456b962. After making this change, we continued to observe the corruption |
| Comment by Githook User [ 03/Mar/17 ] |
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Author: {u'username': u'acmorrow', u'name': u'Andrew Morrow', u'email': u'acm@mongodb.com'}Message: We suspect that the GCC based atomics in atomicops-internals-gcc.h |