/*

 * Copyright (c) 2002, 2015, 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.

 *

 */

#include "precompiled.hpp"

#include "gc/shared/generationCounters.hpp"

#include "memory/allocation.inline.hpp"

#include "memory/resourceArea.hpp"

void GenerationCounters::initialize(const char* name, int ordinal, int spaces,

                                    size_t min_capacity, size_t max_capacity,

                                    size_t curr_capacity) {

  if (UsePerfData) {

    EXCEPTION_MARK;

    ResourceMark rm;

    const char* cns = PerfDataManager::name_space("generation", ordinal);

    _name_space = NEW_C_HEAP_ARRAY(char, strlen(cns)+1, mtGC);

    strcpy(_name_space, cns);

    const char* cname = PerfDataManager::counter_name(_name_space, "name");

    PerfDataManager::create_string_constant(SUN_GC, cname, name, CHECK);

    cname = PerfDataManager::counter_name(_name_space, "spaces");

    PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_None,

                                     spaces, CHECK);

    cname = PerfDataManager::counter_name(_name_space, "minCapacity");

    PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_Bytes,

                                     min_capacity, CHECK);

    cname = PerfDataManager::counter_name(_name_space, "maxCapacity");

    PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_Bytes,

                                     max_capacity, CHECK);

    cname = PerfDataManager::counter_name(_name_space, "capacity");

    _current_size =

      PerfDataManager::create_variable(SUN_GC, cname, PerfData::U_Bytes,

                                       curr_capacity, CHECK);

  }

}

GenerationCounters::GenerationCounters(const char* name,

                                       int ordinal, int spaces,

                                       size_t min_capacity, size_t max_capacity,

                                       VirtualSpace* v)

  : _virtual_space(v) {

  assert(v != NULL, "don't call this constructor if v == NULL");

  initialize(name, ordinal, spaces,

             min_capacity, max_capacity, v->committed_size());

}

GenerationCounters::GenerationCounters(const char* name,

                                       int ordinal, int spaces,

                                       size_t min_capacity, size_t max_capacity,

                                       size_t curr_capacity)

  : _virtual_space(NULL) {

  initialize(name, ordinal, spaces, min_capacity, max_capacity, curr_capacity);

}

GenerationCounters::~GenerationCounters() {

  if (_name_space != NULL) {

    FREE_C_HEAP_ARRAY(char, _name_space);

  }

}

void GenerationCounters::update_all() {

  assert(_virtual_space != NULL, "otherwise, override this method");

  _current_size->set_value(_virtual_space->committed_size());

}