view src/share/vm/gc_implementation/g1/evacuationInfo.hpp @ 20504:6948da6d7c13

8052172: Evacuation failure handling in G1 does not evacuate all objects if -XX:-G1DeferredRSUpdate is set Summary: Remove -XX:-G1DeferredRSUpdate functionality as it is racy. During evacuation failure handling, threads where evacuation failure handling occurred may try to add remembered sets to regions which remembered sets are currently being scanned. The iterator to handle the remembered set scan does not support addition of entries during scan and so may skip valid references. Reviewed-by: iveresov, brutisso, mgerdin
author tschatzl
date Tue, 30 Sep 2014 09:44:36 +0200
parents f2110083203d
children
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/*
 * Copyright (c) 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_SHARED_EVACUATIONINFO_HPP
#define SHARE_VM_GC_IMPLEMENTATION_SHARED_EVACUATIONINFO_HPP

#include "memory/allocation.hpp"

class EvacuationInfo : public StackObj {
  uint _collectionset_regions;
  uint _allocation_regions;
  size_t _collectionset_used_before;
  size_t _collectionset_used_after;
  size_t _alloc_regions_used_before;
  size_t _bytes_copied;
  uint   _regions_freed;

public:
  EvacuationInfo() : _collectionset_regions(0), _allocation_regions(0), _collectionset_used_before(0),
                     _collectionset_used_after(0), _alloc_regions_used_before(0),
                     _bytes_copied(0), _regions_freed(0) { }

  void set_collectionset_regions(uint collectionset_regions) {
    _collectionset_regions = collectionset_regions;
  }

  void set_allocation_regions(uint allocation_regions) {
    _allocation_regions = allocation_regions;
  }

  void set_collectionset_used_before(size_t used) {
    _collectionset_used_before = used;
  }

  void increment_collectionset_used_after(size_t used) {
    _collectionset_used_after += used;
  }

  void set_alloc_regions_used_before(size_t used) {
    _alloc_regions_used_before = used;
  }

  void set_bytes_copied(size_t copied) {
    _bytes_copied = copied;
  }

  void set_regions_freed(uint freed) {
    _regions_freed += freed;
  }

  uint   collectionset_regions()     { return _collectionset_regions; }
  uint   allocation_regions()        { return _allocation_regions; }
  size_t collectionset_used_before() { return _collectionset_used_before; }
  size_t collectionset_used_after()  { return _collectionset_used_after; }
  size_t alloc_regions_used_before() { return _alloc_regions_used_before; }
  size_t bytes_copied()              { return _bytes_copied; }
  uint   regions_freed()             { return _regions_freed; }
};

#endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_EVACUATIONINFO_HPP