1.1 --- a/src/share/vm/memory/referenceProcessor.hpp Wed Sep 07 15:00:13 2011 -0700
1.2 +++ b/src/share/vm/memory/referenceProcessor.hpp Wed Sep 07 13:55:42 2011 -0700
1.3 @@ -52,6 +52,8 @@
1.4
1.5 class ReferenceProcessor : public CHeapObj {
1.6 protected:
1.7 + // Compatibility with pre-4965777 JDK's
1.8 + static bool _pending_list_uses_discovered_field;
1.9 MemRegion _span; // (right-open) interval of heap
1.10 // subject to wkref discovery
1.11 bool _discovering_refs; // true when discovery enabled
1.12 @@ -111,7 +113,6 @@
1.13 return _current_soft_ref_policy;
1.14 }
1.15
1.16 - public:
1.17 // Process references with a certain reachability level.
1.18 void process_discovered_reflist(DiscoveredList refs_lists[],
1.19 ReferencePolicy* policy,
1.20 @@ -297,6 +298,13 @@
1.21 bool discovery_is_atomic() const { return _discovery_is_atomic; }
1.22 void set_atomic_discovery(bool atomic) { _discovery_is_atomic = atomic; }
1.23
1.24 + // whether the JDK in which we are embedded is a pre-4965777 JDK,
1.25 + // and thus whether or not it uses the discovered field to chain
1.26 + // the entries in the pending list.
1.27 + static bool pending_list_uses_discovered_field() {
1.28 + return _pending_list_uses_discovered_field;
1.29 + }
1.30 +
1.31 // whether discovery is done by multiple threads same-old-timeously
1.32 bool discovery_is_mt() const { return _discovery_is_mt; }
1.33 void set_mt_discovery(bool mt) { _discovery_is_mt = mt; }
