/*

 * Copyright (c) 2014, 2018, Oracle and/or its affiliates. All rights reserved.

 * 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.

 *

 */

#ifndef SHARE_VM_GC_SHARED_STRINGDEDUP_STRINGDEDUPSTAT_HPP

#define SHARE_VM_GC_SHARED_STRINGDEDUP_STRINGDEDUPSTAT_HPP

#include "memory/allocation.hpp"

#include "runtime/os.hpp"

// Macros for GC log output formating

#define STRDEDUP_OBJECTS_FORMAT         UINTX_FORMAT_W(12)

#define STRDEDUP_TIME_FORMAT            "%.3fs"

#define STRDEDUP_TIME_PARAM(time)       (time)

#define STRDEDUP_TIME_FORMAT_MS         "%.3fms"

#define STRDEDUP_TIME_PARAM_MS(time)    ((time) * MILLIUNITS)

#define STRDEDUP_PERCENT_FORMAT         "%5.1f%%"

#define STRDEDUP_PERCENT_FORMAT_NS      "%.1f%%"

#define STRDEDUP_BYTES_FORMAT           "%8.1f%s"

#define STRDEDUP_BYTES_FORMAT_NS        "%.1f%s"

#define STRDEDUP_BYTES_PARAM(bytes)     byte_size_in_proper_unit((double)(bytes)), proper_unit_for_byte_size((bytes))

//

// Statistics gathered by the deduplication thread.

//

class StringDedupStat : public CHeapObj<mtGC> {

protected:

  // Counters

  uintx  _inspected;

  uintx  _skipped;

  uintx  _hashed;

  uintx  _known;

  uintx  _new;

  uintx  _new_bytes;

  uintx  _deduped;

  uintx  _deduped_bytes;

  uintx  _idle;

  uintx  _exec;

  uintx  _block;

  // Time spent by the deduplication thread in different phases

  double _start_concurrent;

  double _end_concurrent;

  double _start_phase;

  double _idle_elapsed;

  double _exec_elapsed;

  double _block_elapsed;

public:

  StringDedupStat();

  void inc_inspected() {

    _inspected++;

  }

  void inc_skipped() {

    _skipped++;

  }

  void inc_hashed() {

    _hashed++;

  }

  void inc_known() {

    _known++;

  }

  void inc_new(uintx bytes) {

    _new++;

    _new_bytes += bytes;

  }

  virtual void deduped(oop obj, uintx bytes) {

    _deduped++;

    _deduped_bytes += bytes;

  }

  void mark_idle() {

    _start_phase = os::elapsedTime();

    _idle++;

  }

  void mark_exec() {

    double now = os::elapsedTime();

    _idle_elapsed = now - _start_phase;

    _start_phase = now;

    _start_concurrent = now;

    _exec++;

  }

  void mark_block() {

    double now = os::elapsedTime();

    _exec_elapsed += now - _start_phase;

    _start_phase = now;

    _block++;

  }

  void mark_unblock() {

    double now = os::elapsedTime();

    _block_elapsed += now - _start_phase;

    _start_phase = now;

  }

  void mark_done() {

    double now = os::elapsedTime();

    _exec_elapsed += now - _start_phase;

    _end_concurrent = now;

  }

  virtual void reset();

  virtual void add(const StringDedupStat* const stat);

  virtual void print_statistics(bool total) const;

  static void print_start(const StringDedupStat* last_stat);

  static void print_end(const StringDedupStat* last_stat, const StringDedupStat* total_stat);

};

#endif // SHARE_VM_GC_SHARED_STRINGDEDUP_STRINGDEDUPSTAT_HPP