/*

 * 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/serial/cSpaceCounters.hpp"

#include "memory/allocation.inline.hpp"

#include "memory/metaspace.hpp"

#include "memory/resourceArea.hpp"

CSpaceCounters::CSpaceCounters(const char* name, int ordinal, size_t max_size,

                               ContiguousSpace* s, GenerationCounters* gc) :

   _space(s) {

  if (UsePerfData) {

    EXCEPTION_MARK;

    ResourceMark rm;

    const char* cns = PerfDataManager::name_space(gc->name_space(), "space",

                                                  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, "maxCapacity");

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

                                     (jlong)max_size, CHECK);

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

    _capacity = PerfDataManager::create_variable(SUN_GC, cname,

                                                 PerfData::U_Bytes,

                                                 _space->capacity(), CHECK);

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

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

                                    new ContiguousSpaceUsedHelper(_space),

                                    CHECK);

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

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

                                     _space->capacity(), CHECK);

  }

}

CSpaceCounters::~CSpaceCounters() {

    if (_name_space != NULL) FREE_C_HEAP_ARRAY(char, _name_space);

}

void CSpaceCounters::update_capacity() {

  _capacity->set_value(_space->capacity());

}

void CSpaceCounters::update_used() {

  _used->set_value(_space->used());

}

void CSpaceCounters::update_all() {

  update_used();

  update_capacity();

}

jlong ContiguousSpaceUsedHelper::take_sample(){

  return _space->used();

}