JDK-8247213 : G1: Reduce usage of volatile in favour of Atomic operations
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: gc
  • Affected Version: 15
  • Priority: P4
  • Status: Open
  • Resolution: Unresolved
  • Submitted: 2020-06-09
  • Updated: 2020-11-24
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tbdUnresolved
Related Reports
Relates :  
JDK-8234192 - undefined behavior: C++ volatile keyword
Description
The volatile qualifier does not guarantee atomic operations by the standard. Instead of using volatile, we ought to use Atomic operations. This enhancement removes usage of volatile in G1 and instead uses a new class AtomicValue to do the operations.