/*

 * 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.

 *

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 */

// CMSGCAdaptivePolicyCounters is a holder class for performance counters

// that track the data and decisions for the ergonomics policy for the

// concurrent mark sweep collector

class CMSGCAdaptivePolicyCounters : public GCAdaptivePolicyCounters {

  friend class VMStructs;

 private:

  // Capacity of tenured generation recorded at the end of

  // any collection.

  PerfVariable* _cms_capacity_counter; // Make this common with PS _old_capacity

  // Average stop-the-world pause time for both initial and

  // remark pauses sampled at the end of the checkpointRootsFinalWork.

  PerfVariable* _avg_cms_STW_time_counter;

  // Average stop-the-world (STW) GC cost for the STW pause time

  // _avg_cms_STW_time_counter.

  PerfVariable* _avg_cms_STW_gc_cost_counter;

#ifdef NOT_PRODUCT

  // These are useful to see how the most recent values of these

  // counters compare to their respective averages but

  // do not control behavior.

  PerfVariable* _initial_pause_counter;

  PerfVariable* _remark_pause_counter;

#endif

  // Average of the initial marking pause for a concurrent collection.

  PerfVariable* _avg_initial_pause_counter;

  // Average of the remark pause for a concurrent collection.

  PerfVariable* _avg_remark_pause_counter;

  // Average for the sum of all the concurrent times per collection.

  PerfVariable* _avg_concurrent_time_counter;

  // Average for the time between the most recent end of a

  // concurrent collection and the beginning of the next

  // concurrent collection.

  PerfVariable* _avg_concurrent_interval_counter;

  // Average of the concurrent GC costs based on _avg_concurrent_time_counter

  // and _avg_concurrent_interval_counter.

  PerfVariable* _avg_concurrent_gc_cost_counter;

  // Average of the free space in the tenured generation at the

  // end of the sweep of the tenured generation.

  PerfVariable* _avg_cms_free_counter;

  // Average of the free space in the tenured generation at the

  // start of the sweep of the tenured generation.

  PerfVariable* _avg_cms_free_at_sweep_counter;

  // Average of the free space in the tenured generation at the

  // after any resizing of the tenured generation at the end

  // of a collection of the tenured generation.

  PerfVariable* _avg_cms_promo_counter;

  // Average of  the mark-sweep-compact (MSC) pause time for a collection

  // of the tenured generation.

  PerfVariable* _avg_msc_pause_counter;

  // Average for the time between the most recent end of a

  // MSC collection and the beginning of the next

  // MSC collection.

  PerfVariable* _avg_msc_interval_counter;

  // Average for the GC cost of a MSC collection based on

  // _avg_msc_pause_counter and _avg_msc_interval_counter.

  PerfVariable* _msc_gc_cost_counter;

  // Average of  the mark-sweep (MS) pause time for a collection

  // of the tenured generation.

  PerfVariable* _avg_ms_pause_counter;

  // Average for the time between the most recent end of a

  // MS collection and the beginning of the next

  // MS collection.

  PerfVariable* _avg_ms_interval_counter;

  // Average for the GC cost of a MS collection based on

  // _avg_ms_pause_counter and _avg_ms_interval_counter.

  PerfVariable* _ms_gc_cost_counter;

  // Average of the bytes promoted per minor collection.

  PerfVariable* _promoted_avg_counter;

  // Average of the deviation of the promoted average

  PerfVariable* _promoted_avg_dev_counter;

  // Padded average of the bytes promoted per minor colleciton

  PerfVariable* _promoted_padded_avg_counter;

  // See description of the _change_young_gen_for_maj_pauses

  // variable recently in cmsAdaptiveSizePolicy.hpp.

  PerfVariable* _change_young_gen_for_maj_pauses_counter;

  // See descriptions of _remark_pause_old_slope, _initial_pause_old_slope,

  // etc. variables recently in cmsAdaptiveSizePolicy.hpp.

  PerfVariable* _remark_pause_old_slope_counter;

  PerfVariable* _initial_pause_old_slope_counter;

  PerfVariable* _remark_pause_young_slope_counter;

  PerfVariable* _initial_pause_young_slope_counter;

  CMSAdaptiveSizePolicy* cms_size_policy() {

    assert(_size_policy->kind() ==

      AdaptiveSizePolicy::_gc_cms_adaptive_size_policy,

      "Wrong size policy");

    return (CMSAdaptiveSizePolicy*)_size_policy;

  }

  inline void update_avg_cms_STW_time_counter() {

    _avg_cms_STW_time_counter->set_value(

      (jlong) (cms_size_policy()->avg_cms_STW_time()->average() *

      (double) MILLIUNITS));

  }

  inline void update_avg_cms_STW_gc_cost_counter() {

    _avg_cms_STW_gc_cost_counter->set_value(

      (jlong) (cms_size_policy()->avg_cms_STW_gc_cost()->average() * 100.0));

  }

  inline void update_avg_initial_pause_counter() {

    _avg_initial_pause_counter->set_value(

      (jlong) (cms_size_policy()->avg_initial_pause()->average() *

      (double) MILLIUNITS));

  }

#ifdef NOT_PRODUCT

  inline void update_avg_remark_pause_counter() {

    _avg_remark_pause_counter->set_value(

      (jlong) (cms_size_policy()-> avg_remark_pause()->average() *

      (double) MILLIUNITS));

  }

  inline void update_initial_pause_counter() {

    _initial_pause_counter->set_value(

      (jlong) (cms_size_policy()->avg_initial_pause()->average() *

      (double) MILLIUNITS));

  }

#endif

  inline void update_remark_pause_counter() {

    _remark_pause_counter->set_value(

      (jlong) (cms_size_policy()-> avg_remark_pause()->last_sample() *

      (double) MILLIUNITS));

  }

  inline void update_avg_concurrent_time_counter() {

    _avg_concurrent_time_counter->set_value(

      (jlong) (cms_size_policy()->avg_concurrent_time()->last_sample() *

      (double) MILLIUNITS));

  }

  inline void update_avg_concurrent_interval_counter() {

    _avg_concurrent_interval_counter->set_value(

      (jlong) (cms_size_policy()->avg_concurrent_interval()->average() *

      (double) MILLIUNITS));

  }

  inline void update_avg_concurrent_gc_cost_counter() {

    _avg_concurrent_gc_cost_counter->set_value(

      (jlong) (cms_size_policy()->avg_concurrent_gc_cost()->average() * 100.0));

  }

  inline void update_avg_cms_free_counter() {

    _avg_cms_free_counter->set_value(

      (jlong) cms_size_policy()->avg_cms_free()->average());

  }

  inline void update_avg_cms_free_at_sweep_counter() {

    _avg_cms_free_at_sweep_counter->set_value(

      (jlong) cms_size_policy()->avg_cms_free_at_sweep()->average());

  }

  inline void update_avg_cms_promo_counter() {

    _avg_cms_promo_counter->set_value(

      (jlong) cms_size_policy()->avg_cms_promo()->average());

  }

  inline void update_avg_old_live_counter() {

    _avg_old_live_counter->set_value(

      (jlong)(cms_size_policy()->avg_old_live()->average())

    );

  }

  inline void update_avg_msc_pause_counter() {

    _avg_msc_pause_counter->set_value(

      (jlong) (cms_size_policy()->avg_msc_pause()->average() *

      (double) MILLIUNITS));

  }

  inline void update_avg_msc_interval_counter() {

    _avg_msc_interval_counter->set_value(

      (jlong) (cms_size_policy()->avg_msc_interval()->average() *

      (double) MILLIUNITS));

  }

  inline void update_msc_gc_cost_counter() {

    _msc_gc_cost_counter->set_value(

      (jlong) (cms_size_policy()->avg_msc_gc_cost()->average() * 100.0));

  }

  inline void update_avg_ms_pause_counter() {

    _avg_ms_pause_counter->set_value(

      (jlong) (cms_size_policy()->avg_ms_pause()->average() *

      (double) MILLIUNITS));

  }

  inline void update_avg_ms_interval_counter() {

    _avg_ms_interval_counter->set_value(

      (jlong) (cms_size_policy()->avg_ms_interval()->average() *

      (double) MILLIUNITS));

  }

  inline void update_ms_gc_cost_counter() {

    _ms_gc_cost_counter->set_value(

      (jlong) (cms_size_policy()->avg_ms_gc_cost()->average() * 100.0));

  }

  inline void update_major_gc_cost_counter() {

    _major_gc_cost_counter->set_value(

      (jlong)(cms_size_policy()->cms_gc_cost() * 100.0)

    );

  }

  inline void update_mutator_cost_counter() {

    _mutator_cost_counter->set_value(

      (jlong)(cms_size_policy()->mutator_cost() * 100.0)

    );

  }

  inline void update_avg_promoted_avg(CMSGCStats* gc_stats) {

    _promoted_avg_counter->set_value(

      (jlong)(gc_stats->avg_promoted()->average())

    );

  }

  inline void update_avg_promoted_dev(CMSGCStats* gc_stats) {

    _promoted_avg_dev_counter->set_value(

      (jlong)(gc_stats->avg_promoted()->deviation())

    );

  }

  inline void update_avg_promoted_padded_avg(CMSGCStats* gc_stats) {

    _promoted_padded_avg_counter->set_value(

      (jlong)(gc_stats->avg_promoted()->padded_average())

    );

  }

  inline void update_remark_pause_old_slope_counter() {

    _remark_pause_old_slope_counter->set_value(

      (jlong)(cms_size_policy()->remark_pause_old_slope() * 1000)

    );

  }

  inline void update_initial_pause_old_slope_counter() {

    _initial_pause_old_slope_counter->set_value(

      (jlong)(cms_size_policy()->initial_pause_old_slope() * 1000)

    );

  }

  inline void update_remark_pause_young_slope_counter() {

    _remark_pause_young_slope_counter->set_value(

      (jlong)(cms_size_policy()->remark_pause_young_slope() * 1000)

    );

  }

  inline void update_initial_pause_young_slope_counter() {

    _initial_pause_young_slope_counter->set_value(

      (jlong)(cms_size_policy()->initial_pause_young_slope() * 1000)

    );

  }

  inline void update_change_young_gen_for_maj_pauses() {

    _change_young_gen_for_maj_pauses_counter->set_value(

      cms_size_policy()->change_young_gen_for_maj_pauses());

  }

 public:

  CMSGCAdaptivePolicyCounters(const char* name, int collectors, int generations,

                              AdaptiveSizePolicy* size_policy);

  // update counters

  void update_counters();

  void update_counters(CMSGCStats* gc_stats);

  void update_counters_from_policy();

  inline void update_cms_capacity_counter(size_t size_in_bytes) {

    _cms_capacity_counter->set_value(size_in_bytes);

  }

  virtual GCPolicyCounters::Name kind() const {

    return GCPolicyCounters::CMSGCAdaptivePolicyCountersKind;

  }

};