Commits on Dec 3, 2019

1. Add missing barriers to jProfiling helpers …

   Previously, the tryLock and unlock methods on the jProfiling hash table
   implementation did not contain any read or write barriers. While this is
   fine on architectures such as x86-64, this causes problems with the weak
   memory model used in Power. Failing to include the barriers could allow
   reordering of memory accesses to cause incorrect behaviour with
   unpredictable results.
   
   Signed-off-by: Ben Thomas <ben@benthomas.ca>

   

   aviansie-ben committed Dec 3, 2019
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