/*

 * Copyright 2001-2005 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 *

 */

class PSAdaptiveSizePolicy;

class PSYoungGen;

class PSOldGen;

class PSMarkSweep : public MarkSweep {

 private:

  static elapsedTimer        _accumulated_time;

  static unsigned int        _total_invocations;

  static jlong               _time_of_last_gc;   // ms

  static CollectorCounters*  _counters;

  // Closure accessors

  static OopClosure* mark_and_push_closure() { return &MarkSweep::mark_and_push_closure; }

  static VoidClosure* follow_stack_closure() { return (VoidClosure*)&MarkSweep::follow_stack_closure; }

  static OopClosure* adjust_pointer_closure() { return (OopClosure*)&MarkSweep::adjust_pointer_closure; }

  static OopClosure* adjust_root_pointer_closure() { return (OopClosure*)&MarkSweep::adjust_root_pointer_closure; }

  static BoolObjectClosure* is_alive_closure() { return (BoolObjectClosure*)&MarkSweep::is_alive; }

 debug_only(public:)  // Used for PSParallelCompact debugging

  // Mark live objects

  static void mark_sweep_phase1(bool clear_all_softrefs);

  // Calculate new addresses

  static void mark_sweep_phase2();

 debug_only(private:) // End used for PSParallelCompact debugging

  // Update pointers

  static void mark_sweep_phase3();

  // Move objects to new positions

  static void mark_sweep_phase4();

 debug_only(public:)  // Used for PSParallelCompact debugging

  // Temporary data structures for traversal and storing/restoring marks

  static void allocate_stacks();

  static void deallocate_stacks();

  static void set_ref_processor(ReferenceProcessor* rp) {  // delete this method

    _ref_processor = rp;

  }

 debug_only(private:) // End used for PSParallelCompact debugging

  // If objects are left in eden after a collection, try to move the boundary

  // and absorb them into the old gen.  Returns true if eden was emptied.

  static bool absorb_live_data_from_eden(PSAdaptiveSizePolicy* size_policy,

                                         PSYoungGen* young_gen,

                                         PSOldGen* old_gen);

  // Reset time since last full gc

  static void reset_millis_since_last_gc();

 public:

  static void invoke(bool clear_all_softrefs);

  static void invoke_no_policy(bool clear_all_softrefs);

  static void initialize();

  // Public accessors

  static elapsedTimer* accumulated_time() { return &_accumulated_time; }

  static unsigned int total_invocations() { return _total_invocations; }

  static CollectorCounters* counters()    { return _counters; }

  // Time since last full gc (in milliseconds)

  static jlong millis_since_last_gc();

};