/*

 * Copyright (c) 2007, 2013, 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_implementation/concurrentMarkSweep/cmsAdaptiveSizePolicy.hpp"

#include "gc_implementation/concurrentMarkSweep/cmsCollectorPolicy.hpp"

#include "gc_implementation/concurrentMarkSweep/cmsGCAdaptivePolicyCounters.hpp"

#include "gc_implementation/parNew/parNewGeneration.hpp"

#include "gc_implementation/shared/gcPolicyCounters.hpp"

#include "gc_implementation/shared/vmGCOperations.hpp"

#include "memory/cardTableRS.hpp"

#include "memory/collectorPolicy.hpp"

#include "memory/gcLocker.inline.hpp"

#include "memory/genCollectedHeap.hpp"

#include "memory/generationSpec.hpp"

#include "memory/space.hpp"

#include "memory/universe.hpp"

#include "runtime/arguments.hpp"

#include "runtime/globals_extension.hpp"

#include "runtime/handles.inline.hpp"

#include "runtime/java.hpp"

#include "runtime/thread.inline.hpp"

#include "runtime/vmThread.hpp"

//

// ConcurrentMarkSweepPolicy methods

//

void ConcurrentMarkSweepPolicy::initialize_alignments() {

  _space_alignment = _gen_alignment = (uintx)Generation::GenGrain;

  _heap_alignment = compute_heap_alignment();

}

void ConcurrentMarkSweepPolicy::initialize_generations() {

  _generations = NEW_C_HEAP_ARRAY3(GenerationSpecPtr, number_of_generations(), mtGC, 0, AllocFailStrategy::RETURN_NULL);

  if (_generations == NULL)

    vm_exit_during_initialization("Unable to allocate gen spec");

  if (UseParNewGC) {

    if (UseAdaptiveSizePolicy) {

      _generations[0] = new GenerationSpec(Generation::ASParNew,

                                           _initial_gen0_size, _max_gen0_size);

    } else {

      _generations[0] = new GenerationSpec(Generation::ParNew,

                                           _initial_gen0_size, _max_gen0_size);

    }

  } else {

    _generations[0] = new GenerationSpec(Generation::DefNew,

                                         _initial_gen0_size, _max_gen0_size);

  }

  if (UseAdaptiveSizePolicy) {

    _generations[1] = new GenerationSpec(Generation::ASConcurrentMarkSweep,

                            _initial_gen1_size, _max_gen1_size);

  } else {

    _generations[1] = new GenerationSpec(Generation::ConcurrentMarkSweep,

                            _initial_gen1_size, _max_gen1_size);

  }

  if (_generations[0] == NULL || _generations[1] == NULL) {

    vm_exit_during_initialization("Unable to allocate gen spec");

  }

}

void ConcurrentMarkSweepPolicy::initialize_size_policy(size_t init_eden_size,

                                               size_t init_promo_size,

                                               size_t init_survivor_size) {

  double max_gc_minor_pause_sec = ((double) MaxGCMinorPauseMillis)/1000.0;

  double max_gc_pause_sec = ((double) MaxGCPauseMillis)/1000.0;

  _size_policy = new CMSAdaptiveSizePolicy(init_eden_size,

                                           init_promo_size,

                                           init_survivor_size,

                                           max_gc_minor_pause_sec,

                                           max_gc_pause_sec,

                                           GCTimeRatio);

}

void ConcurrentMarkSweepPolicy::initialize_gc_policy_counters() {

  // initialize the policy counters - 2 collectors, 3 generations

  if (UseParNewGC) {

    _gc_policy_counters = new GCPolicyCounters("ParNew:CMS", 2, 3);

  }

  else {

    _gc_policy_counters = new GCPolicyCounters("Copy:CMS", 2, 3);

  }

}

// Returns true if the incremental mode is enabled.

bool ConcurrentMarkSweepPolicy::has_soft_ended_eden()

{

  return CMSIncrementalMode;

}

//

// ASConcurrentMarkSweepPolicy methods

//

void ASConcurrentMarkSweepPolicy::initialize_gc_policy_counters() {

  assert(size_policy() != NULL, "A size policy is required");

  // initialize the policy counters - 2 collectors, 3 generations

  if (UseParNewGC) {

    _gc_policy_counters = new CMSGCAdaptivePolicyCounters("ParNew:CMS", 2, 3,

      size_policy());

  }

  else {

    _gc_policy_counters = new CMSGCAdaptivePolicyCounters("Copy:CMS", 2, 3,

      size_policy());

  }

}