annotate src/share/vm/gc_implementation/concurrentMarkSweep/vmStructs_cms.hpp @ 187:790e66e5fbac

6687581: Make CMS work with compressed oops Summary: Make FreeChunk read markword instead of LSB in _klass pointer to indicate that it's a FreeChunk for compressed oops. Reviewed-by: ysr, jmasa
author coleenp
date Mon, 09 Jun 2008 11:51:19 -0400
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children c0ecab83e6f3
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1 /*
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2 * Copyright (c) 2007 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 #define VM_STRUCTS_CMS(nonstatic_field, \
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26 volatile_nonstatic_field, \
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27 static_field) \
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28 nonstatic_field(CompactibleFreeListSpace, _collector, CMSCollector*) \
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29 nonstatic_field(CompactibleFreeListSpace, _bt, BlockOffsetArrayNonContigSpace) \
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30 \
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31 nonstatic_field(CMSPermGen, _gen, ConcurrentMarkSweepGeneration*) \
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32 nonstatic_field(CMSBitMap, _bmStartWord, HeapWord*) \
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33 nonstatic_field(CMSBitMap, _bmWordSize, size_t) \
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34 nonstatic_field(CMSBitMap, _shifter, const int) \
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35 nonstatic_field(CMSBitMap, _bm, BitMap) \
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36 nonstatic_field(CMSBitMap, _virtual_space, VirtualSpace) \
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37 nonstatic_field(CMSCollector, _markBitMap, CMSBitMap) \
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38 nonstatic_field(ConcurrentMarkSweepGeneration, _cmsSpace, CompactibleFreeListSpace*) \
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39 static_field(ConcurrentMarkSweepThread, _collector, CMSCollector*) \
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40 volatile_nonstatic_field(FreeChunk, _size, size_t) \
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41 nonstatic_field(FreeChunk, _next, FreeChunk*) \
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42 nonstatic_field(FreeChunk, _prev, FreeChunk*)
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43
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44 #define VM_TYPES_CMS(declare_type, \
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45 declare_toplevel_type) \
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46 \
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47 declare_type(ConcurrentMarkSweepGeneration,CardGeneration) \
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48 declare_type(CompactibleFreeListSpace, CompactibleSpace) \
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49 declare_type(CMSPermGenGen, ConcurrentMarkSweepGeneration) \
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50 declare_type(CMSPermGen, PermGen) \
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51 declare_type(ConcurrentMarkSweepThread, NamedThread) \
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52 declare_type(SurrogateLockerThread, JavaThread) \
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53 declare_toplevel_type(CMSCollector) \
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54 declare_toplevel_type(CMSBitMap) \
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55 declare_toplevel_type(FreeChunk) \
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56 declare_toplevel_type(ConcurrentMarkSweepThread*) \
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57 declare_toplevel_type(ConcurrentMarkSweepGeneration*) \
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58 declare_toplevel_type(SurrogateLockerThread*) \
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59 declare_toplevel_type(CompactibleFreeListSpace*) \
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60 declare_toplevel_type(CMSCollector*) \
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61 declare_toplevel_type(FreeChunk*)
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62
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63 #define VM_INT_CONSTANTS_CMS(declare_constant) \
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64 declare_constant(Generation::ConcurrentMarkSweep) \
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65 declare_constant(PermGen::ConcurrentMarkSweep)