1062 
1063   // Summary phase utility routine to fill dead space (if any) at the dense
1064   // prefix boundary.  Should only be called if the the dense prefix is
1065   // non-empty.
1066   static void fill_dense_prefix_end(SpaceId id);
1067 
1068   static void summarize_spaces_quick();
1069   static void summarize_space(SpaceId id, bool maximum_compaction);
1070   static void summary_phase(ParCompactionManager* cm, bool maximum_compaction);
1071 
1072   // Adjust addresses in roots.  Does not adjust addresses in heap.
1073   static void adjust_roots(ParCompactionManager* cm);
1074 
1075   DEBUG_ONLY(static void write_block_fill_histogram();)
1076 
1077   // Move objects to new locations.
1078   static void compact_perm(ParCompactionManager* cm);
1079   static void compact();
1080 
1081   // Add available regions to the stack and draining tasks to the task queue.
1082   static void enqueue_region_draining_tasks(GCTaskQueue* q,
1083                                             uint parallel_gc_threads);
1084 
1085   // Add dense prefix update tasks to the task queue.
1086   static void enqueue_dense_prefix_tasks(GCTaskQueue* q,
1087                                          uint parallel_gc_threads);
1088 
1089   // Add region stealing tasks to the task queue.
1090   static void enqueue_region_stealing_tasks(
1091                                        GCTaskQueue* q,
1092                                        ParallelTaskTerminator* terminator_ptr,
1093                                        uint parallel_gc_threads);
1094 
1095   // If objects are left in eden after a collection, try to move the boundary
1096   // and absorb them into the old gen.  Returns true if eden was emptied.
1097   static bool absorb_live_data_from_eden(PSAdaptiveSizePolicy* size_policy,
1098                                          PSYoungGen* young_gen,
1099                                          PSOldGen* old_gen);
1100 
1101   // Reset time since last full gc
1102   static void reset_millis_since_last_gc();

1062 
1063   // Summary phase utility routine to fill dead space (if any) at the dense
1064   // prefix boundary.  Should only be called if the the dense prefix is
1065   // non-empty.
1066   static void fill_dense_prefix_end(SpaceId id);
1067 
1068   static void summarize_spaces_quick();
1069   static void summarize_space(SpaceId id, bool maximum_compaction);
1070   static void summary_phase(ParCompactionManager* cm, bool maximum_compaction);
1071 
1072   // Adjust addresses in roots.  Does not adjust addresses in heap.
1073   static void adjust_roots(ParCompactionManager* cm);
1074 
1075   DEBUG_ONLY(static void write_block_fill_histogram();)
1076 
1077   // Move objects to new locations.
1078   static void compact_perm(ParCompactionManager* cm);
1079   static void compact();
1080 
1081   // Add available regions to the stack and draining tasks to the task queue.
1082   static void prepare_region_draining_tasks(GCTaskQueue* q,
1083                                             uint parallel_gc_threads);
1084 
1085   // Add dense prefix update tasks to the task queue.
1086   static void enqueue_dense_prefix_tasks(GCTaskQueue* q,
1087                                          uint parallel_gc_threads);
1088 
1089   // Add region stealing tasks to the task queue.
1090   static void enqueue_region_stealing_tasks(
1091                                        GCTaskQueue* q,
1092                                        ParallelTaskTerminator* terminator_ptr,
1093                                        uint parallel_gc_threads);
1094 
1095   // If objects are left in eden after a collection, try to move the boundary
1096   // and absorb them into the old gen.  Returns true if eden was emptied.
1097   static bool absorb_live_data_from_eden(PSAdaptiveSizePolicy* size_policy,
1098                                          PSYoungGen* young_gen,
1099                                          PSOldGen* old_gen);
1100 
1101   // Reset time since last full gc
1102   static void reset_millis_since_last_gc();