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8008079: G1: Add nextObject routine to CMBitMapRO and replace nextWord Summary: Update the task local finger to the start of the next object when marking aborts, in order to avoid the redundant scanning of all 0's when the marking task restarts, if otherwise updating to the next word. In addition, reuse the routine nextObject() in routine iterate(). Reviewed-by: johnc, ysr Contributed-by: tamao <tao.mao@oracle.com>
author tamao
date Tue, 05 Mar 2013 15:36:56 -0800
parents 720b6a76dd9d
children 69f26e8e09f9
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/*
 * Copyright (c) 2011, 2012, 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_G1_VMSTRUCTS_G1_HPP
#define SHARE_VM_GC_IMPLEMENTATION_G1_VMSTRUCTS_G1_HPP

#include "gc_implementation/g1/heapRegion.hpp"
#include "gc_implementation/g1/heapRegionSeq.inline.hpp"
#include "gc_implementation/g1/g1CollectedHeap.inline.hpp"

#define VM_STRUCTS_G1(nonstatic_field, static_field)                          \
                                                                              \
  static_field(HeapRegion, GrainBytes, size_t)                                \
                                                                              \
  nonstatic_field(HeapRegionSeq,   _regions, HeapRegion**)                    \
  nonstatic_field(HeapRegionSeq,   _length,  uint)                            \
                                                                              \
  nonstatic_field(G1CollectedHeap, _hrs,                HeapRegionSeq)        \
  nonstatic_field(G1CollectedHeap, _g1_committed,       MemRegion)            \
  nonstatic_field(G1CollectedHeap, _summary_bytes_used, size_t)               \
  nonstatic_field(G1CollectedHeap, _g1mm,               G1MonitoringSupport*) \
  nonstatic_field(G1CollectedHeap, _old_set,            HeapRegionSetBase)    \
  nonstatic_field(G1CollectedHeap, _humongous_set,      HeapRegionSetBase)    \
                                                                              \
  nonstatic_field(G1MonitoringSupport, _eden_committed,     size_t)           \
  nonstatic_field(G1MonitoringSupport, _eden_used,          size_t)           \
  nonstatic_field(G1MonitoringSupport, _survivor_committed, size_t)           \
  nonstatic_field(G1MonitoringSupport, _survivor_used,      size_t)           \
  nonstatic_field(G1MonitoringSupport, _old_committed,      size_t)           \
  nonstatic_field(G1MonitoringSupport, _old_used,           size_t)           \
                                                                              \
  nonstatic_field(HeapRegionSetBase,   _length,             uint)             \
  nonstatic_field(HeapRegionSetBase,   _region_num,         uint)             \
  nonstatic_field(HeapRegionSetBase,   _total_used_bytes,   size_t)           \


#define VM_TYPES_G1(declare_type, declare_toplevel_type)                      \
                                                                              \
  declare_type(G1CollectedHeap, SharedHeap)                                   \
                                                                              \
  declare_type(HeapRegion, ContiguousSpace)                                   \
  declare_toplevel_type(HeapRegionSeq)                                        \
  declare_toplevel_type(HeapRegionSetBase)                                    \
  declare_toplevel_type(G1MonitoringSupport)                                  \
                                                                              \
  declare_toplevel_type(G1CollectedHeap*)                                     \
  declare_toplevel_type(HeapRegion*)                                          \
  declare_toplevel_type(G1MonitoringSupport*)                                 \


#endif // SHARE_VM_GC_IMPLEMENTATION_G1_VMSTRUCTS_G1_HPP