1.1 --- a/src/share/vm/gc_implementation/shared/adaptiveSizePolicy.hpp Tue Nov 22 04:47:10 2011 -0500
1.2 +++ b/src/share/vm/gc_implementation/shared/adaptiveSizePolicy.hpp Tue Aug 09 10:16:01 2011 -0700
1.3 @@ -187,6 +187,8 @@
1.4 julong _young_gen_change_for_minor_throughput;
1.5 julong _old_gen_change_for_major_throughput;
1.6
1.7 + static const uint GCWorkersPerJavaThread = 2;
1.8 +
1.9 // Accessors
1.10
1.11 double gc_pause_goal_sec() const { return _gc_pause_goal_sec; }
1.12 @@ -331,6 +333,8 @@
1.13 // Return true if the policy suggested a change.
1.14 bool tenuring_threshold_change() const;
1.15
1.16 + static bool _debug_perturbation;
1.17 +
1.18 public:
1.19 AdaptiveSizePolicy(size_t init_eden_size,
1.20 size_t init_promo_size,
1.21 @@ -338,6 +342,31 @@
1.22 double gc_pause_goal_sec,
1.23 uint gc_cost_ratio);
1.24
1.25 + // Return number default GC threads to use in the next GC.
1.26 + static int calc_default_active_workers(uintx total_workers,
1.27 + const uintx min_workers,
1.28 + uintx active_workers,
1.29 + uintx application_workers);
1.30 +
1.31 + // Return number of GC threads to use in the next GC.
1.32 + // This is called sparingly so as not to change the
1.33 + // number of GC workers gratuitously.
1.34 + // For ParNew collections
1.35 + // For PS scavenge and ParOld collections
1.36 + // For G1 evacuation pauses (subject to update)
1.37 + // Other collection phases inherit the number of
1.38 + // GC workers from the calls above. For example,
1.39 + // a CMS parallel remark uses the same number of GC
1.40 + // workers as the most recent ParNew collection.
1.41 + static int calc_active_workers(uintx total_workers,
1.42 + uintx active_workers,
1.43 + uintx application_workers);
1.44 +
1.45 + // Return number of GC threads to use in the next concurrent GC phase.
1.46 + static int calc_active_conc_workers(uintx total_workers,
1.47 + uintx active_workers,
1.48 + uintx application_workers);
1.49 +
1.50 bool is_gc_cms_adaptive_size_policy() {
1.51 return kind() == _gc_cms_adaptive_size_policy;
1.52 }
