view src/share/vm/gc_implementation/concurrentMarkSweep/cmsCollectorPolicy.hpp @ 6725:da91efe96a93

6964458: Reimplement class meta-data storage to use native memory Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
author coleenp
date Sat, 01 Sep 2012 13:25:18 -0400
parents f95d63e2154a
children 8f07aa079343
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/*
 * Copyright (c) 2007, 2010, 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_IMPLEMENTATION_CONCURRENTMARKSWEEP_CMSCOLLECTORPOLICY_HPP
#define SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CMSCOLLECTORPOLICY_HPP

#include "memory/collectorPolicy.hpp"

class ConcurrentMarkSweepPolicy : public TwoGenerationCollectorPolicy {
 protected:
  void initialize_generations();

 public:
  ConcurrentMarkSweepPolicy();

  ConcurrentMarkSweepPolicy* as_concurrent_mark_sweep_policy() { return this; }

  void initialize_gc_policy_counters();

  virtual void initialize_size_policy(size_t init_eden_size,
                                      size_t init_promo_size,
                                      size_t init_survivor_size);

  // Returns true if the incremental mode is enabled.
  virtual bool has_soft_ended_eden();
};

class ASConcurrentMarkSweepPolicy : public ConcurrentMarkSweepPolicy {
 public:

  // Initialize the jstat counters.  This method requires a
  // size policy.  The size policy is expected to be created
  // after the generations are fully initialized so the
  // initialization of the counters need to be done post
  // the initialization of the generations.
  void initialize_gc_policy_counters();

  virtual CollectorPolicy::Name kind() {
    return CollectorPolicy::ASConcurrentMarkSweepPolicyKind;
  }
};

#endif // SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CMSCOLLECTORPOLICY_HPP