Java example source code file (psMarkSweep.hpp)

This example Java source code file (psMarkSweep.hpp) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

boolobjectclosure, collectorcounters, end, klassclosure, marksweep\:\:adjust_klass_closure, marksweep\:\:follow_stack_closure, oopclosure, psadaptivesizepolicy, psoldgen, psparallelcompact, psyounggen, share_vm_gc_implementation_parallelscavenge_psmarksweep_hpp, used, voidclosure

The psMarkSweep.hpp Java example source code

/*
 * Copyright (c) 2001, 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.
 *
 */

#ifndef SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSMARKSWEEP_HPP
#define SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSMARKSWEEP_HPP

#include "gc_implementation/shared/collectorCounters.hpp"
#include "gc_implementation/shared/markSweep.inline.hpp"
#include "utilities/stack.hpp"

class PSAdaptiveSizePolicy;
class PSYoungGen;
class PSOldGen;

class PSMarkSweep : public MarkSweep {
 private:
  static elapsedTimer        _accumulated_time;
  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 KlassClosure* follow_klass_closure() { return &MarkSweep::follow_klass_closure; }
  static VoidClosure* follow_stack_closure() { return (VoidClosure*)&MarkSweep::follow_stack_closure; }
  static OopClosure* adjust_pointer_closure() { return (OopClosure*)&MarkSweep::adjust_pointer_closure; }
  static KlassClosure* adjust_klass_closure() { return &MarkSweep::adjust_klass_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 bool invoke_no_policy(bool clear_all_softrefs);

  static void initialize();

  // Public accessors
  static elapsedTimer* accumulated_time() { return &_accumulated_time; }
  static CollectorCounters* counters()    { return _counters; }

  // Time since last full gc (in milliseconds)
  static jlong millis_since_last_gc();
};

#endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSMARKSWEEP_HPP