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From "Neil Conway (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MESOS-7373) Remove thread_local workaround on OSX
Date Fri, 07 Apr 2017 22:37:41 GMT
Neil Conway created MESOS-7373:
----------------------------------

             Summary: Remove thread_local workaround on OSX
                 Key: MESOS-7373
                 URL: https://issues.apache.org/jira/browse/MESOS-7373
             Project: Mesos
          Issue Type: Bug
            Reporter: Neil Conway


{{include/stout/thread_local.hpp}} in stout contains the following comment:

{noformat}
// A wrapper around the thread local storage attribute. The default
// clang on OSX does not support the c++11 standard `thread_local`
// intentionally until a higher performance implementation is
// released. See https://devforums.apple.com/message/1079348#1079348
// Until then, we use `__thread` on OSX instead.
// We required that THREAD_LOCAL is only used with POD types as this
// is a requirement of `__thread`.
{noformat}

As of XCode 8, this workaround should no longer be necessary, because Apple's clang supports
{{thread_local}} natively -- see http://stackoverflow.com/a/29929949/5327044



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