[SERVER-9483] Implementation of mongo::ThreadLocalValue incorrectly assumes no support for __thread on Apple Created: 26/Apr/13  Updated: 21/Nov/15  Resolved: 21/Nov/15

Status: Closed
Project: Core Server
Component/s: Internal Code
Affects Version/s: None
Fix Version/s: None

Type: Improvement Priority: Minor - P4
Reporter: Andrew Morrow (Inactive) Assignee: Unassigned
Resolution: Done Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Backwards Compatibility: Fully Compatible
Participants:

 Description   

We assume that for Apple platforms that the __thread keyword doesn't work.

https://github.com/mongodb/mongo/blob/master/src/mongo/util/concurrency/threadlocal.h#L120

However, this isn't a platform thing, it is a compiler thing. Clang on Apple, for instance, does support __thread.

The check for __thread support should be moved into a Configure time check and a config.h style header, setting something like MONGO_HAVE___THREAD.



 Comments   
Comment by Andrew Morrow (Inactive) [ 21/Nov/15 ]

This was fixed by work done in SERVER-6737

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