--- old/src/share/vm/runtime/sweeper.hpp 2014-09-05 10:38:01.449388226 +0200 +++ new/src/share/vm/runtime/sweeper.hpp 2014-09-05 10:38:01.273388235 +0200 @@ -54,33 +54,33 @@ // is full. class NMethodSweeper : public AllStatic { - static long _traversals; // Stack scan count, also sweep ID. - static long _total_nof_code_cache_sweeps; // Total number of full sweeps of the code cache - static long _time_counter; // Virtual time used to periodically invoke sweeper - static long _last_sweep; // Value of _time_counter when the last sweep happened - static nmethod* _current; // Current nmethod - static int _seen; // Nof. nmethod we have currently processed in current pass of CodeCache - static int _flushed_count; // Nof. nmethods flushed in current sweep - static int _zombified_count; // Nof. nmethods made zombie in current sweep - static int _marked_for_reclamation_count; // Nof. nmethods marked for reclaim in current sweep - - static volatile int _sweep_fractions_left; // Nof. invocations left until we are completed with this pass - static volatile int _sweep_started; // Flag to control conc sweeper - static volatile bool _should_sweep; // Indicates if we should invoke the sweeper - static volatile int _bytes_changed; // Counts the total nmethod size if the nmethod changed from: - // 1) alive -> not_entrant - // 2) not_entrant -> zombie - // 3) zombie -> marked_for_reclamation + static long _traversals; // Stack scan count, also sweep ID. + static long _total_nof_code_cache_sweeps; // Total number of full sweeps of the code cache + static long _time_counter; // Virtual time used to periodically invoke sweeper + static long _last_sweep; // Value of _time_counter when the last sweep happened + static NMethodIterator _current; // Current nmethod + static int _seen; // Nof. nmethod we have currently processed in current pass of CodeCache + static int _flushed_count; // Nof. nmethods flushed in current sweep + static int _zombified_count; // Nof. nmethods made zombie in current sweep + static int _marked_for_reclamation_count; // Nof. nmethods marked for reclaim in current sweep + + static volatile int _sweep_fractions_left; // Nof. invocations left until we are completed with this pass + static volatile int _sweep_started; // Flag to control conc sweeper + static volatile bool _should_sweep; // Indicates if we should invoke the sweeper + static volatile int _bytes_changed; // Counts the total nmethod size if the nmethod changed from: + // 1) alive -> not_entrant + // 2) not_entrant -> zombie + // 3) zombie -> marked_for_reclamation // Stat counters static long _total_nof_methods_reclaimed; // Accumulated nof methods flushed static long _total_nof_c2_methods_reclaimed; // Accumulated nof C2-compiled methods flushed static size_t _total_flushed_size; // Total size of flushed methods static int _hotness_counter_reset_val; - static Tickspan _total_time_sweeping; // Accumulated time sweeping - static Tickspan _total_time_this_sweep; // Total time this sweep - static Tickspan _peak_sweep_time; // Peak time for a full sweep - static Tickspan _peak_sweep_fraction_time; // Peak time sweeping one fraction + static Tickspan _total_time_sweeping; // Accumulated time sweeping + static Tickspan _total_time_this_sweep; // Total time this sweep + static Tickspan _peak_sweep_time; // Peak time for a full sweep + static Tickspan _peak_sweep_fraction_time; // Peak time sweeping one fraction static int process_nmethod(nmethod *nm); static void release_nmethod(nmethod* nm); @@ -98,7 +98,7 @@ #ifdef ASSERT - static bool is_sweeping(nmethod* which) { return _current == which; } + static bool is_sweeping(nmethod* which) { return _current.method() == which; } // Keep track of sweeper activity in the ring buffer static void record_sweep(nmethod* nm, int line); static void report_events(int id, address entry);