Mercurial > hg > truffle
diff src/share/vm/gc_implementation/g1/g1CollectorPolicy.hpp @ 4095:bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
Summary: Select number of GC threads dynamically based on heap usage and number of Java threads
Reviewed-by: johnc, ysr, jcoomes
| author | jmasa |
|---|---|
| date | Tue, 09 Aug 2011 10:16:01 -0700 |
| parents | a88de71c4e3a |
| children | 00dd86e542eb |
line wrap: on
line diff
--- a/src/share/vm/gc_implementation/g1/g1CollectorPolicy.hpp Tue Nov 22 04:47:10 2011 -0500 +++ b/src/share/vm/gc_implementation/g1/g1CollectorPolicy.hpp Tue Aug 09 10:16:01 2011 -0700 @@ -89,6 +89,9 @@ // has been set, or 1 otherwise int _parallel_gc_threads; + // The number of GC threads currently active. + uintx _no_of_gc_threads; + enum SomePrivateConstants { NumPrevPausesForHeuristics = 10 }; @@ -280,6 +283,9 @@ double update_rs_processed_buffers, double goal_ms); + uintx no_of_gc_threads() { return _no_of_gc_threads; } + void set_no_of_gc_threads(uintx v) { _no_of_gc_threads = v; } + double _pause_time_target_ms; double _recorded_young_cset_choice_time_ms; double _recorded_non_young_cset_choice_time_ms; @@ -287,6 +293,7 @@ size_t _max_pending_cards; public: + // Accessors void set_region_eden(HeapRegion* hr, int young_index_in_cset) { hr->set_young(); @@ -737,13 +744,13 @@ void record_concurrent_mark_remark_end(); void record_concurrent_mark_cleanup_start(); - void record_concurrent_mark_cleanup_end(); + void record_concurrent_mark_cleanup_end(int no_of_gc_threads); void record_concurrent_mark_cleanup_completed(); void record_concurrent_pause(); void record_concurrent_pause_end(); - void record_collection_pause_end(); + void record_collection_pause_end(int no_of_gc_threads); void print_heap_transition(); // Record the fact that a full collection occurred.