/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 *

 */

#include "gc/shared/adaptiveSizePolicy.hpp"

#include "gc/shared/gcPolicyCounters.hpp"

#include "utilities/macros.hpp"

// This class keeps statistical information and computes the

// size of the heap.

class GCAdaptivePolicyCounters : public GCPolicyCounters {

 protected:

  PerfVariable*         _eden_size_counter;

  PerfVariable*         _promo_size_counter;

  PerfVariable*         _young_capacity_counter;

  PerfVariable*         _minor_gc_cost_counter;

  PerfVariable*         _major_gc_cost_counter;

  PerfVariable*         _mutator_cost_counter;

  PerfVariable*         _avg_young_live_counter;

  PerfVariable*         _avg_old_live_counter;

  PerfVariable*         _avg_minor_pause_counter;

  PerfVariable*         _avg_minor_interval_counter;

#ifdef NOT_PRODUCT

  PerfVariable*         _minor_pause_counter;

#endif

  PerfVariable*         _change_young_gen_for_min_pauses_counter;

  PerfVariable*         _change_young_gen_for_throughput_counter;

  PerfVariable*         _change_old_gen_for_maj_pauses_counter;

  PerfVariable*         _change_old_gen_for_throughput_counter;

  PerfVariable*         _decrease_for_footprint_counter;

  PerfVariable*         _minor_pause_young_slope_counter;

  PerfVariable*         _major_pause_old_slope_counter;

  PerfVariable*         _decide_at_full_gc_counter;

  PerfVariable*         _survived_counter;

  PerfVariable*         _promoted_counter;

  PerfVariable*         _avg_survived_avg_counter;

  PerfVariable*         _avg_survived_dev_counter;

  PerfVariable*         _avg_survived_padded_avg_counter;

  PerfVariable*         _survivor_overflowed_counter;

  PerfVariable*         _increment_tenuring_threshold_for_gc_cost_counter;

  PerfVariable*         _decrement_tenuring_threshold_for_gc_cost_counter;

  PerfVariable*        _decrement_tenuring_threshold_for_survivor_limit_counter;

  PerfVariable*         _minor_collection_slope_counter;

  PerfVariable*         _major_collection_slope_counter;

  AdaptiveSizePolicy* _size_policy;

  inline void update_eden_size() {

    size_t eden_size_in_bytes = size_policy()->calculated_eden_size_in_bytes();

    _eden_size_counter->set_value(eden_size_in_bytes);

  }

  inline void update_promo_size() {

    _promo_size_counter->set_value(

      size_policy()->calculated_promo_size_in_bytes());

  }

  inline void update_avg_minor_pause_counter() {

    _avg_minor_pause_counter->set_value((jlong)

      (size_policy()->avg_minor_pause()->average() * 1000.0));

  }

  inline void update_avg_minor_interval_counter() {

    _avg_minor_interval_counter->set_value((jlong)

      (size_policy()->avg_minor_interval()->average() * 1000.0));

  }

#ifdef NOT_PRODUCT

  inline void update_minor_pause_counter() {

    _minor_pause_counter->set_value((jlong)

      (size_policy()->avg_minor_pause()->last_sample() * 1000.0));

  }

#endif

  inline void update_minor_gc_cost_counter() {

    _minor_gc_cost_counter->set_value((jlong)

      (size_policy()->minor_gc_cost() * 100.0));

  }

  inline void update_avg_young_live_counter() {

    _avg_young_live_counter->set_value(

      (jlong)(size_policy()->avg_young_live()->average())

    );

  }

  inline void update_avg_survived_avg_counters() {

    _avg_survived_avg_counter->set_value(

      (jlong)(size_policy()->_avg_survived->average())

    );

  }

  inline void update_avg_survived_dev_counters() {

    _avg_survived_dev_counter->set_value(

      (jlong)(size_policy()->_avg_survived->deviation())

    );

  }

  inline void update_avg_survived_padded_avg_counters() {

    _avg_survived_padded_avg_counter->set_value(

      (jlong)(size_policy()->_avg_survived->padded_average())

    );

  }

  inline void update_change_old_gen_for_throughput() {

    _change_old_gen_for_throughput_counter->set_value(

      size_policy()->change_old_gen_for_throughput());

  }

  inline void update_change_young_gen_for_throughput() {

    _change_young_gen_for_throughput_counter->set_value(

      size_policy()->change_young_gen_for_throughput());

  }

  inline void update_decrease_for_footprint() {

    _decrease_for_footprint_counter->set_value(

      size_policy()->decrease_for_footprint());

  }

  inline void update_decide_at_full_gc_counter() {

    _decide_at_full_gc_counter->set_value(

      size_policy()->decide_at_full_gc());

  }

  inline void update_minor_pause_young_slope_counter() {

    _minor_pause_young_slope_counter->set_value(

      (jlong)(size_policy()->minor_pause_young_slope() * 1000)

    );

  }

  virtual void update_counters_from_policy();

 protected:

  virtual AdaptiveSizePolicy* size_policy() { return _size_policy; }

 public:

  GCAdaptivePolicyCounters(const char* name,

                           int collectors,

                           int generations,

                           AdaptiveSizePolicy* size_policy);

  inline void update_survived(size_t survived) {

    _survived_counter->set_value(survived);

  }

  inline void update_promoted(size_t promoted) {

    _promoted_counter->set_value(promoted);

  }

  inline void update_young_capacity(size_t size_in_bytes) {

    _young_capacity_counter->set_value(size_in_bytes);

  }

  virtual void update_counters();

  inline void update_survivor_size_counters() {

    desired_survivor_size()->set_value(

      size_policy()->calculated_survivor_size_in_bytes());

  }

  inline void update_survivor_overflowed(bool survivor_overflowed) {

    _survivor_overflowed_counter->set_value(survivor_overflowed);

  }

  inline void update_tenuring_threshold(uint threshold) {

    tenuring_threshold()->set_value(threshold);

  }

  inline void update_increment_tenuring_threshold_for_gc_cost() {

    _increment_tenuring_threshold_for_gc_cost_counter->set_value(

      size_policy()->increment_tenuring_threshold_for_gc_cost());

  }

  inline void update_decrement_tenuring_threshold_for_gc_cost() {

    _decrement_tenuring_threshold_for_gc_cost_counter->set_value(

      size_policy()->decrement_tenuring_threshold_for_gc_cost());

  }

  inline void update_decrement_tenuring_threshold_for_survivor_limit() {

    _decrement_tenuring_threshold_for_survivor_limit_counter->set_value(

      size_policy()->decrement_tenuring_threshold_for_survivor_limit());

  }

  inline void update_change_young_gen_for_min_pauses() {

    _change_young_gen_for_min_pauses_counter->set_value(

      size_policy()->change_young_gen_for_min_pauses());

  }

  inline void update_change_old_gen_for_maj_pauses() {

    _change_old_gen_for_maj_pauses_counter->set_value(

      size_policy()->change_old_gen_for_maj_pauses());

  }

  inline void update_minor_collection_slope_counter() {

    _minor_collection_slope_counter->set_value(

      (jlong)(size_policy()->minor_collection_slope() * 1000)

    );

  }

  inline void update_major_collection_slope_counter() {

    _major_collection_slope_counter->set_value(

      (jlong)(size_policy()->major_collection_slope() * 1000)

    );

  }

  void set_size_policy(AdaptiveSizePolicy* v) { _size_policy = v; }

  virtual GCPolicyCounters::Name kind() const {

    return GCPolicyCounters::GCAdaptivePolicyCountersKind;

  }

};