/*

 * 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 "memory/allocation.hpp"

class LineBuffer;

template <class T> class WorkerDataArray;

class G1GCPhaseTimes : public CHeapObj<mtGC> {

  friend class G1GCParPhasePrinter;

  uint _active_gc_threads;

  uint _max_gc_threads;

 public:

  enum GCParPhases {

    GCWorkerStart,

    ExtRootScan,

    ThreadRoots,

    StringTableRoots,

    UniverseRoots,

    JNIRoots,

    ObjectSynchronizerRoots,

    FlatProfilerRoots,

    ManagementRoots,

    SystemDictionaryRoots,

    CLDGRoots,

    JVMTIRoots,

    CMRefRoots,

    WaitForStrongCLD,

    WeakCLDRoots,

    SATBFiltering,

    UpdateRS,

    ScanRS,

    CodeRoots,

    ObjCopy,

    Termination,

    Other,

    GCWorkerTotal,

    GCWorkerEnd,

    StringDedupQueueFixup,

    StringDedupTableFixup,

    RedirtyCards,

    GCParPhasesSentinel

  };

 private:

  // Markers for grouping the phases in the GCPhases enum above

  static const int GCMainParPhasesLast = GCWorkerEnd;

  static const int StringDedupPhasesFirst = StringDedupQueueFixup;

  static const int StringDedupPhasesLast = StringDedupTableFixup;

  WorkerDataArray<double>* _gc_par_phases[GCParPhasesSentinel];

  WorkerDataArray<size_t>* _update_rs_processed_buffers;

  WorkerDataArray<size_t>* _termination_attempts;

  WorkerDataArray<size_t>* _redirtied_cards;

  double _cur_collection_par_time_ms;

  double _cur_collection_code_root_fixup_time_ms;

  double _cur_strong_code_root_purge_time_ms;

  double _cur_evac_fail_recalc_used;

  double _cur_evac_fail_restore_remsets;

  double _cur_evac_fail_remove_self_forwards;

  double _cur_string_dedup_fixup_time_ms;

  double _cur_clear_ct_time_ms;

  double _cur_ref_proc_time_ms;

  double _cur_ref_enq_time_ms;

  double _cur_collection_start_sec;

  double _root_region_scan_wait_time_ms;

  double _recorded_young_cset_choice_time_ms;

  double _recorded_non_young_cset_choice_time_ms;

  double _recorded_redirty_logged_cards_time_ms;

  double _recorded_young_free_cset_time_ms;

  double _recorded_non_young_free_cset_time_ms;

  double _cur_fast_reclaim_humongous_time_ms;

  double _cur_fast_reclaim_humongous_register_time_ms;

  size_t _cur_fast_reclaim_humongous_total;

  size_t _cur_fast_reclaim_humongous_candidates;

  size_t _cur_fast_reclaim_humongous_reclaimed;

  double _cur_verify_before_time_ms;

  double _cur_verify_after_time_ms;

  // Helper methods for detailed logging

  void print_stats(int level, const char* str, double value);

  void print_stats(int level, const char* str, size_t value);

  void print_stats(int level, const char* str, double value, uint workers);

 public:

  G1GCPhaseTimes(uint max_gc_threads);

  void note_gc_start(uint active_gc_threads, bool mark_in_progress);

  void note_gc_end();

  void print(double pause_time_sec);

  // record the time a phase took in seconds

  void record_time_secs(GCParPhases phase, uint worker_i, double secs);

  // add a number of seconds to a phase

  void add_time_secs(GCParPhases phase, uint worker_i, double secs);

  void record_thread_work_item(GCParPhases phase, uint worker_i, size_t count);

  // return the average time for a phase in milliseconds

  double average_time_ms(GCParPhases phase);

  size_t sum_thread_work_items(GCParPhases phase);

 private:

  double get_time_ms(GCParPhases phase, uint worker_i);

  double sum_time_ms(GCParPhases phase);

  double min_time_ms(GCParPhases phase);

  double max_time_ms(GCParPhases phase);

  size_t get_thread_work_item(GCParPhases phase, uint worker_i);

  double average_thread_work_items(GCParPhases phase);

  size_t min_thread_work_items(GCParPhases phase);

  size_t max_thread_work_items(GCParPhases phase);

 public:

  void record_clear_ct_time(double ms) {

    _cur_clear_ct_time_ms = ms;

  }

  void record_par_time(double ms) {

    _cur_collection_par_time_ms = ms;

  }

  void record_code_root_fixup_time(double ms) {

    _cur_collection_code_root_fixup_time_ms = ms;

  }

  void record_strong_code_root_purge_time(double ms) {

    _cur_strong_code_root_purge_time_ms = ms;

  }

  void record_evac_fail_recalc_used_time(double ms) {

    _cur_evac_fail_recalc_used = ms;

  }

  void record_evac_fail_restore_remsets(double ms) {

    _cur_evac_fail_restore_remsets = ms;

  }

  void record_evac_fail_remove_self_forwards(double ms) {

    _cur_evac_fail_remove_self_forwards = ms;

  }

  void record_string_dedup_fixup_time(double ms) {

    _cur_string_dedup_fixup_time_ms = ms;

  }

  void record_ref_proc_time(double ms) {

    _cur_ref_proc_time_ms = ms;

  }

  void record_ref_enq_time(double ms) {

    _cur_ref_enq_time_ms = ms;

  }

  void record_root_region_scan_wait_time(double time_ms) {

    _root_region_scan_wait_time_ms = time_ms;

  }

  void record_young_free_cset_time_ms(double time_ms) {

    _recorded_young_free_cset_time_ms = time_ms;

  }

  void record_non_young_free_cset_time_ms(double time_ms) {

    _recorded_non_young_free_cset_time_ms = time_ms;

  }

  void record_fast_reclaim_humongous_stats(double time_ms, size_t total, size_t candidates) {

    _cur_fast_reclaim_humongous_register_time_ms = time_ms;

    _cur_fast_reclaim_humongous_total = total;

    _cur_fast_reclaim_humongous_candidates = candidates;

  }

  void record_fast_reclaim_humongous_time_ms(double value, size_t reclaimed) {

    _cur_fast_reclaim_humongous_time_ms = value;

    _cur_fast_reclaim_humongous_reclaimed = reclaimed;

  }

  void record_young_cset_choice_time_ms(double time_ms) {

    _recorded_young_cset_choice_time_ms = time_ms;

  }

  void record_non_young_cset_choice_time_ms(double time_ms) {

    _recorded_non_young_cset_choice_time_ms = time_ms;

  }

  void record_redirty_logged_cards_time_ms(double time_ms) {

    _recorded_redirty_logged_cards_time_ms = time_ms;

  }

  void record_cur_collection_start_sec(double time_ms) {

    _cur_collection_start_sec = time_ms;

  }

  void record_verify_before_time_ms(double time_ms) {

    _cur_verify_before_time_ms = time_ms;

  }

  void record_verify_after_time_ms(double time_ms) {

    _cur_verify_after_time_ms = time_ms;

  }

  double accounted_time_ms();

  double cur_collection_start_sec() {

    return _cur_collection_start_sec;

  }

  double cur_collection_par_time_ms() {

    return _cur_collection_par_time_ms;

  }

  double cur_clear_ct_time_ms() {

    return _cur_clear_ct_time_ms;

  }

  double root_region_scan_wait_time_ms() {

    return _root_region_scan_wait_time_ms;

  }

  double young_cset_choice_time_ms() {

    return _recorded_young_cset_choice_time_ms;

  }

  double young_free_cset_time_ms() {

    return _recorded_young_free_cset_time_ms;

  }

  double non_young_cset_choice_time_ms() {

    return _recorded_non_young_cset_choice_time_ms;

  }

  double non_young_free_cset_time_ms() {

    return _recorded_non_young_free_cset_time_ms;

  }

  double fast_reclaim_humongous_time_ms() {

    return _cur_fast_reclaim_humongous_time_ms;

  }

};

class G1GCParPhaseTimesTracker : public StackObj {

  double _start_time;

  G1GCPhaseTimes::GCParPhases _phase;

  G1GCPhaseTimes* _phase_times;

  uint _worker_id;

public:

  G1GCParPhaseTimesTracker(G1GCPhaseTimes* phase_times, G1GCPhaseTimes::GCParPhases phase, uint worker_id);

  ~G1GCParPhaseTimesTracker();

};