graal-compiler: src/share/vm/gc_implementation/parallelScavenge/psParallelCompact.hpp annotate

annotate src/share/vm/gc_implementation/parallelScavenge/psParallelCompact.hpp @ 6735:aed758eda82a

7195833: NPG: Rename instanceClassLoaderKlass, instanceRefKlass and instanceMirrorKlass Summary: Simple renaming to be consistent with instanceKlass->InstanceKlass renaming Reviewed-by: stefank, jmasa

author	coleenp
date	Fri, 07 Sep 2012 12:04:16 -0400
parents	da91efe96a93
children	b735136e0d82

rev	line source
0 a61af66fc99e Initial load duke parents: diff changeset	1 /*
4913 ab4422d0ed59 7146343: PS invoke methods should indicate the type of gc done jcoomes parents: 4099 diff changeset	2 * Copyright (c) 2005, 2012, Oracle and/or its affiliates. All rights reserved.
0 a61af66fc99e Initial load duke parents: diff changeset	3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
a61af66fc99e Initial load duke parents: diff changeset	4 *
a61af66fc99e Initial load duke parents: diff changeset	5 * This code is free software; you can redistribute it and/or modify it
a61af66fc99e Initial load duke parents: diff changeset	6 * under the terms of the GNU General Public License version 2 only, as
a61af66fc99e Initial load duke parents: diff changeset	7 * published by the Free Software Foundation.
a61af66fc99e Initial load duke parents: diff changeset	8 *
a61af66fc99e Initial load duke parents: diff changeset	9 * This code is distributed in the hope that it will be useful, but WITHOUT
a61af66fc99e Initial load duke parents: diff changeset	10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
a61af66fc99e Initial load duke parents: diff changeset	11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
a61af66fc99e Initial load duke parents: diff changeset	12 * version 2 for more details (a copy is included in the LICENSE file that
a61af66fc99e Initial load duke parents: diff changeset	13 * accompanied this code).
a61af66fc99e Initial load duke parents: diff changeset	14 *
a61af66fc99e Initial load duke parents: diff changeset	15 * You should have received a copy of the GNU General Public License version
a61af66fc99e Initial load duke parents: diff changeset	16 * 2 along with this work; if not, write to the Free Software Foundation,
a61af66fc99e Initial load duke parents: diff changeset	17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
a61af66fc99e Initial load duke parents: diff changeset	18 *
1552 c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1311 diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1311 diff changeset	20 * or visit www.oracle.com if you need additional information or have any
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1311 diff changeset	21 * questions.
0 a61af66fc99e Initial load duke parents: diff changeset	22 *
a61af66fc99e Initial load duke parents: diff changeset	23 */
a61af66fc99e Initial load duke parents: diff changeset	24
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1638 diff changeset	25 #ifndef SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSPARALLELCOMPACT_HPP
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1638 diff changeset	26 #define SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSPARALLELCOMPACT_HPP
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1638 diff changeset	27
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1638 diff changeset	28 #include "gc_implementation/parallelScavenge/objectStartArray.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1638 diff changeset	29 #include "gc_implementation/parallelScavenge/parMarkBitMap.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1638 diff changeset	30 #include "gc_implementation/parallelScavenge/psCompactionManager.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1638 diff changeset	31 #include "gc_implementation/shared/collectorCounters.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1638 diff changeset	32 #include "gc_implementation/shared/markSweep.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1638 diff changeset	33 #include "gc_implementation/shared/mutableSpace.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1638 diff changeset	34 #include "memory/sharedHeap.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1638 diff changeset	35 #include "oops/oop.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1638 diff changeset	36
0 a61af66fc99e Initial load duke parents: diff changeset	37 class ParallelScavengeHeap;
a61af66fc99e Initial load duke parents: diff changeset	38 class PSAdaptiveSizePolicy;
a61af66fc99e Initial load duke parents: diff changeset	39 class PSYoungGen;
a61af66fc99e Initial load duke parents: diff changeset	40 class PSOldGen;
a61af66fc99e Initial load duke parents: diff changeset	41 class ParCompactionManager;
a61af66fc99e Initial load duke parents: diff changeset	42 class ParallelTaskTerminator;
a61af66fc99e Initial load duke parents: diff changeset	43 class PSParallelCompact;
a61af66fc99e Initial load duke parents: diff changeset	44 class GCTaskManager;
a61af66fc99e Initial load duke parents: diff changeset	45 class GCTaskQueue;
a61af66fc99e Initial load duke parents: diff changeset	46 class PreGCValues;
a61af66fc99e Initial load duke parents: diff changeset	47 class MoveAndUpdateClosure;
a61af66fc99e Initial load duke parents: diff changeset	48 class RefProcTaskExecutor;
a61af66fc99e Initial load duke parents: diff changeset	49
482 7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	50 // The SplitInfo class holds the information needed to 'split' a source region
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	51 // so that the live data can be copied to two destination spaces. Normally,
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	52 // all the live data in a region is copied to a single destination space (e.g.,
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	53 // everything live in a region in eden is copied entirely into the old gen).
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	54 // However, when the heap is nearly full, all the live data in eden may not fit
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	55 // into the old gen. Copying only some of the regions from eden to old gen
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	56 // requires finding a region that does not contain a partial object (i.e., no
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	57 // live object crosses the region boundary) somewhere near the last object that
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	58 // does fit into the old gen. Since it's not always possible to find such a
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	59 // region, splitting is necessary for predictable behavior.
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	60 //
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	61 // A region is always split at the end of the partial object. This avoids
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	62 // additional tests when calculating the new location of a pointer, which is a
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	63 // very hot code path. The partial object and everything to its left will be
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	64 // copied to another space (call it dest_space_1). The live data to the right
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	65 // of the partial object will be copied either within the space itself, or to a
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	66 // different destination space (distinct from dest_space_1).
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	67 //
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	68 // Split points are identified during the summary phase, when region
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	69 // destinations are computed: data about the split, including the
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	70 // partial_object_size, is recorded in a SplitInfo record and the
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	71 // partial_object_size field in the summary data is set to zero. The zeroing is
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	72 // possible (and necessary) since the partial object will move to a different
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	73 // destination space than anything to its right, thus the partial object should
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	74 // not affect the locations of any objects to its right.
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	75 //
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	76 // The recorded data is used during the compaction phase, but only rarely: when
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	77 // the partial object on the split region will be copied across a destination
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	78 // region boundary. This test is made once each time a region is filled, and is
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	79 // a simple address comparison, so the overhead is negligible (see
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	80 // PSParallelCompact::first_src_addr()).
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	81 //
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	82 // Notes:
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	83 //
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	84 // Only regions with partial objects are split; a region without a partial
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	85 // object does not need any extra bookkeeping.
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	86 //
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	87 // At most one region is split per space, so the amount of data required is
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	88 // constant.
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	89 //
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	90 // A region is split only when the destination space would overflow. Once that
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	91 // happens, the destination space is abandoned and no other data (even from
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	92 // other source spaces) is targeted to that destination space. Abandoning the
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	93 // destination space may leave a somewhat large unused area at the end, if a
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	94 // large object caused the overflow.
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	95 //
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	96 // Future work:
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	97 //
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	98 // More bookkeeping would be required to continue to use the destination space.
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	99 // The most general solution would allow data from regions in two different
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	100 // source spaces to be "joined" in a single destination region. At the very
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	101 // least, additional code would be required in next_src_region() to detect the
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	102 // join and skip to an out-of-order source region. If the join region was also
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	103 // the last destination region to which a split region was copied (the most
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	104 // likely case), then additional work would be needed to get fill_region() to
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	105 // stop iteration and switch to a new source region at the right point. Basic
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	106 // idea would be to use a fake value for the top of the source space. It is
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	107 // doable, if a bit tricky.
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	108 //
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	109 // A simpler (but less general) solution would fill the remainder of the
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	110 // destination region with a dummy object and continue filling the next
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	111 // destination region.
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	112
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	113 class SplitInfo
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	114 {
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	115 public:
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	116 // Return true if this split info is valid (i.e., if a split has been
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	117 // recorded). The very first region cannot have a partial object and thus is
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	118 // never split, so 0 is the 'invalid' value.
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	119 bool is_valid() const { return _src_region_idx > 0; }
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	120
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	121 // Return true if this split holds data for the specified source region.
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	122 inline bool is_split(size_t source_region) const;
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	123
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	124 // The index of the split region, the size of the partial object on that
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	125 // region and the destination of the partial object.
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	126 size_t src_region_idx() const { return _src_region_idx; }
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	127 size_t partial_obj_size() const { return _partial_obj_size; }
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	128 HeapWord* destination() const { return _destination; }
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	129
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	130 // The destination count of the partial object referenced by this split
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	131 // (either 1 or 2). This must be added to the destination count of the
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	132 // remainder of the source region.
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	133 unsigned int destination_count() const { return _destination_count; }
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	134
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	135 // If a word within the partial object will be written to the first word of a
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	136 // destination region, this is the address of the destination region;
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	137 // otherwise this is NULL.
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	138 HeapWord* dest_region_addr() const { return _dest_region_addr; }
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	139
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	140 // If a word within the partial object will be written to the first word of a
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	141 // destination region, this is the address of that word within the partial
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	142 // object; otherwise this is NULL.
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	143 HeapWord* first_src_addr() const { return _first_src_addr; }
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	144
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	145 // Record the data necessary to split the region src_region_idx.
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	146 void record(size_t src_region_idx, size_t partial_obj_size,
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	147 HeapWord* destination);
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	148
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	149 void clear();
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	150
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	151 DEBUG_ONLY(void verify_clear();)
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	152
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	153 private:
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	154 size_t _src_region_idx;
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	155 size_t _partial_obj_size;
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	156 HeapWord* _destination;
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	157 unsigned int _destination_count;
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	158 HeapWord* _dest_region_addr;
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	159 HeapWord* _first_src_addr;
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	160 };
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	161
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	162 inline bool SplitInfo::is_split(size_t region_idx) const
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	163 {
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	164 return _src_region_idx == region_idx && is_valid();
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	165 }
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	166
0 a61af66fc99e Initial load duke parents: diff changeset	167 class SpaceInfo
a61af66fc99e Initial load duke parents: diff changeset	168 {
a61af66fc99e Initial load duke parents: diff changeset	169 public:
a61af66fc99e Initial load duke parents: diff changeset	170 MutableSpace* space() const { return _space; }
a61af66fc99e Initial load duke parents: diff changeset	171
a61af66fc99e Initial load duke parents: diff changeset	172 // Where the free space will start after the collection. Valid only after the
a61af66fc99e Initial load duke parents: diff changeset	173 // summary phase completes.
a61af66fc99e Initial load duke parents: diff changeset	174 HeapWord* new_top() const { return _new_top; }
a61af66fc99e Initial load duke parents: diff changeset	175
a61af66fc99e Initial load duke parents: diff changeset	176 // Allows new_top to be set.
a61af66fc99e Initial load duke parents: diff changeset	177 HeapWord** new_top_addr() { return &_new_top; }
a61af66fc99e Initial load duke parents: diff changeset	178
a61af66fc99e Initial load duke parents: diff changeset	179 // Where the smallest allowable dense prefix ends (used only for perm gen).
a61af66fc99e Initial load duke parents: diff changeset	180 HeapWord* min_dense_prefix() const { return _min_dense_prefix; }
a61af66fc99e Initial load duke parents: diff changeset	181
a61af66fc99e Initial load duke parents: diff changeset	182 // Where the dense prefix ends, or the compacted region begins.
a61af66fc99e Initial load duke parents: diff changeset	183 HeapWord* dense_prefix() const { return _dense_prefix; }
a61af66fc99e Initial load duke parents: diff changeset	184
a61af66fc99e Initial load duke parents: diff changeset	185 // The start array for the (generation containing the) space, or NULL if there
a61af66fc99e Initial load duke parents: diff changeset	186 // is no start array.
a61af66fc99e Initial load duke parents: diff changeset	187 ObjectStartArray* start_array() const { return _start_array; }
a61af66fc99e Initial load duke parents: diff changeset	188
482 7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	189 SplitInfo& split_info() { return _split_info; }
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	190
0 a61af66fc99e Initial load duke parents: diff changeset	191 void set_space(MutableSpace* s) { _space = s; }
a61af66fc99e Initial load duke parents: diff changeset	192 void set_new_top(HeapWord* addr) { _new_top = addr; }
a61af66fc99e Initial load duke parents: diff changeset	193 void set_min_dense_prefix(HeapWord* addr) { _min_dense_prefix = addr; }
a61af66fc99e Initial load duke parents: diff changeset	194 void set_dense_prefix(HeapWord* addr) { _dense_prefix = addr; }
a61af66fc99e Initial load duke parents: diff changeset	195 void set_start_array(ObjectStartArray* s) { _start_array = s; }
a61af66fc99e Initial load duke parents: diff changeset	196
482 7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	197 void publish_new_top() const { _space->set_top(_new_top); }
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	198
0 a61af66fc99e Initial load duke parents: diff changeset	199 private:
a61af66fc99e Initial load duke parents: diff changeset	200 MutableSpace* _space;
a61af66fc99e Initial load duke parents: diff changeset	201 HeapWord* _new_top;
a61af66fc99e Initial load duke parents: diff changeset	202 HeapWord* _min_dense_prefix;
a61af66fc99e Initial load duke parents: diff changeset	203 HeapWord* _dense_prefix;
a61af66fc99e Initial load duke parents: diff changeset	204 ObjectStartArray* _start_array;
482 7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	205 SplitInfo _split_info;
0 a61af66fc99e Initial load duke parents: diff changeset	206 };
a61af66fc99e Initial load duke parents: diff changeset	207
a61af66fc99e Initial load duke parents: diff changeset	208 class ParallelCompactData
a61af66fc99e Initial load duke parents: diff changeset	209 {
a61af66fc99e Initial load duke parents: diff changeset	210 public:
a61af66fc99e Initial load duke parents: diff changeset	211 // Sizes are in HeapWords, unless indicated otherwise.
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	212 static const size_t Log2RegionSize;
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	213 static const size_t RegionSize;
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	214 static const size_t RegionSizeBytes;
0 a61af66fc99e Initial load duke parents: diff changeset	215
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	216 // Mask for the bits in a size_t to get an offset within a region.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	217 static const size_t RegionSizeOffsetMask;
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	218 // Mask for the bits in a pointer to get an offset within a region.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	219 static const size_t RegionAddrOffsetMask;
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	220 // Mask for the bits in a pointer to get the address of the start of a region.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	221 static const size_t RegionAddrMask;
0 a61af66fc99e Initial load duke parents: diff changeset	222
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	223 class RegionData
0 a61af66fc99e Initial load duke parents: diff changeset	224 {
a61af66fc99e Initial load duke parents: diff changeset	225 public:
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	226 // Destination address of the region.
0 a61af66fc99e Initial load duke parents: diff changeset	227 HeapWord* destination() const { return _destination; }
a61af66fc99e Initial load duke parents: diff changeset	228
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	229 // The first region containing data destined for this region.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	230 size_t source_region() const { return _source_region; }
0 a61af66fc99e Initial load duke parents: diff changeset	231
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	232 // The object (if any) starting in this region and ending in a different
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	233 // region that could not be updated during the main (parallel) compaction
0 a61af66fc99e Initial load duke parents: diff changeset	234 // phase. This is different from _partial_obj_addr, which is an object that
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	235 // extends onto a source region. However, the two uses do not overlap in
0 a61af66fc99e Initial load duke parents: diff changeset	236 // time, so the same field is used to save space.
a61af66fc99e Initial load duke parents: diff changeset	237 HeapWord* deferred_obj_addr() const { return _partial_obj_addr; }
a61af66fc99e Initial load duke parents: diff changeset	238
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	239 // The starting address of the partial object extending onto the region.
0 a61af66fc99e Initial load duke parents: diff changeset	240 HeapWord* partial_obj_addr() const { return _partial_obj_addr; }
a61af66fc99e Initial load duke parents: diff changeset	241
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	242 // Size of the partial object extending onto the region (words).
0 a61af66fc99e Initial load duke parents: diff changeset	243 size_t partial_obj_size() const { return _partial_obj_size; }
a61af66fc99e Initial load duke parents: diff changeset	244
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	245 // Size of live data that lies within this region due to objects that start
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	246 // in this region (words). This does not include the partial object
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	247 // extending onto the region (if any), or the part of an object that extends
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	248 // onto the next region (if any).
0 a61af66fc99e Initial load duke parents: diff changeset	249 size_t live_obj_size() const { return _dc_and_los & los_mask; }
a61af66fc99e Initial load duke parents: diff changeset	250
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	251 // Total live data that lies within the region (words).
0 a61af66fc99e Initial load duke parents: diff changeset	252 size_t data_size() const { return partial_obj_size() + live_obj_size(); }
a61af66fc99e Initial load duke parents: diff changeset	253
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	254 // The destination_count is the number of other regions to which data from
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	255 // this region will be copied. At the end of the summary phase, the valid
0 a61af66fc99e Initial load duke parents: diff changeset	256 // values of destination_count are
a61af66fc99e Initial load duke parents: diff changeset	257 //
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	258 // 0 - data from the region will be compacted completely into itself, or the
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	259 // region is empty. The region can be claimed and then filled.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	260 // 1 - data from the region will be compacted into 1 other region; some
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	261 // data from the region may also be compacted into the region itself.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	262 // 2 - data from the region will be copied to 2 other regions.
0 a61af66fc99e Initial load duke parents: diff changeset	263 //
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	264 // During compaction as regions are emptied, the destination_count is
0 a61af66fc99e Initial load duke parents: diff changeset	265 // decremented (atomically) and when it reaches 0, it can be claimed and
a61af66fc99e Initial load duke parents: diff changeset	266 // then filled.
a61af66fc99e Initial load duke parents: diff changeset	267 //
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	268 // A region is claimed for processing by atomically changing the
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	269 // destination_count to the claimed value (dc_claimed). After a region has
0 a61af66fc99e Initial load duke parents: diff changeset	270 // been filled, the destination_count should be set to the completed value
a61af66fc99e Initial load duke parents: diff changeset	271 // (dc_completed).
a61af66fc99e Initial load duke parents: diff changeset	272 inline uint destination_count() const;
a61af66fc99e Initial load duke parents: diff changeset	273 inline uint destination_count_raw() const;
a61af66fc99e Initial load duke parents: diff changeset	274
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	275 // The location of the java heap data that corresponds to this region.
0 a61af66fc99e Initial load duke parents: diff changeset	276 inline HeapWord* data_location() const;
a61af66fc99e Initial load duke parents: diff changeset	277
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	278 // The highest address referenced by objects in this region.
0 a61af66fc99e Initial load duke parents: diff changeset	279 inline HeapWord* highest_ref() const;
a61af66fc99e Initial load duke parents: diff changeset	280
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	281 // Whether this region is available to be claimed, has been claimed, or has
0 a61af66fc99e Initial load duke parents: diff changeset	282 // been completed.
a61af66fc99e Initial load duke parents: diff changeset	283 //
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	284 // Minor subtlety: claimed() returns true if the region is marked
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	285 // completed(), which is desirable since a region must be claimed before it
0 a61af66fc99e Initial load duke parents: diff changeset	286 // can be completed.
a61af66fc99e Initial load duke parents: diff changeset	287 bool available() const { return _dc_and_los < dc_one; }
a61af66fc99e Initial load duke parents: diff changeset	288 bool claimed() const { return _dc_and_los >= dc_claimed; }
a61af66fc99e Initial load duke parents: diff changeset	289 bool completed() const { return _dc_and_los >= dc_completed; }
a61af66fc99e Initial load duke parents: diff changeset	290
a61af66fc99e Initial load duke parents: diff changeset	291 // These are not atomic.
a61af66fc99e Initial load duke parents: diff changeset	292 void set_destination(HeapWord* addr) { _destination = addr; }
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	293 void set_source_region(size_t region) { _source_region = region; }
0 a61af66fc99e Initial load duke parents: diff changeset	294 void set_deferred_obj_addr(HeapWord* addr) { _partial_obj_addr = addr; }
a61af66fc99e Initial load duke parents: diff changeset	295 void set_partial_obj_addr(HeapWord* addr) { _partial_obj_addr = addr; }
a61af66fc99e Initial load duke parents: diff changeset	296 void set_partial_obj_size(size_t words) {
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	297 _partial_obj_size = (region_sz_t) words;
0 a61af66fc99e Initial load duke parents: diff changeset	298 }
a61af66fc99e Initial load duke parents: diff changeset	299
a61af66fc99e Initial load duke parents: diff changeset	300 inline void set_destination_count(uint count);
a61af66fc99e Initial load duke parents: diff changeset	301 inline void set_live_obj_size(size_t words);
a61af66fc99e Initial load duke parents: diff changeset	302 inline void set_data_location(HeapWord* addr);
a61af66fc99e Initial load duke parents: diff changeset	303 inline void set_completed();
a61af66fc99e Initial load duke parents: diff changeset	304 inline bool claim_unsafe();
a61af66fc99e Initial load duke parents: diff changeset	305
a61af66fc99e Initial load duke parents: diff changeset	306 // These are atomic.
a61af66fc99e Initial load duke parents: diff changeset	307 inline void add_live_obj(size_t words);
a61af66fc99e Initial load duke parents: diff changeset	308 inline void set_highest_ref(HeapWord* addr);
a61af66fc99e Initial load duke parents: diff changeset	309 inline void decrement_destination_count();
a61af66fc99e Initial load duke parents: diff changeset	310 inline bool claim();
a61af66fc99e Initial load duke parents: diff changeset	311
a61af66fc99e Initial load duke parents: diff changeset	312 private:
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	313 // The type used to represent object sizes within a region.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	314 typedef uint region_sz_t;
0 a61af66fc99e Initial load duke parents: diff changeset	315
a61af66fc99e Initial load duke parents: diff changeset	316 // Constants for manipulating the _dc_and_los field, which holds both the
a61af66fc99e Initial load duke parents: diff changeset	317 // destination count and live obj size. The live obj size lives at the
a61af66fc99e Initial load duke parents: diff changeset	318 // least significant end so no masking is necessary when adding.
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	319 static const region_sz_t dc_shift; // Shift amount.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	320 static const region_sz_t dc_mask; // Mask for destination count.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	321 static const region_sz_t dc_one; // 1, shifted appropriately.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	322 static const region_sz_t dc_claimed; // Region has been claimed.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	323 static const region_sz_t dc_completed; // Region has been completed.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	324 static const region_sz_t los_mask; // Mask for live obj size.
0 a61af66fc99e Initial load duke parents: diff changeset	325
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	326 HeapWord* _destination;
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	327 size_t _source_region;
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	328 HeapWord* _partial_obj_addr;
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	329 region_sz_t _partial_obj_size;
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	330 region_sz_t volatile _dc_and_los;
0 a61af66fc99e Initial load duke parents: diff changeset	331 #ifdef ASSERT
a61af66fc99e Initial load duke parents: diff changeset	332 // These enable optimizations that are only partially implemented. Use
a61af66fc99e Initial load duke parents: diff changeset	333 // debug builds to prevent the code fragments from breaking.
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	334 HeapWord* _data_location;
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	335 HeapWord* _highest_ref;
0 a61af66fc99e Initial load duke parents: diff changeset	336 #endif // #ifdef ASSERT
a61af66fc99e Initial load duke parents: diff changeset	337
a61af66fc99e Initial load duke parents: diff changeset	338 #ifdef ASSERT
a61af66fc99e Initial load duke parents: diff changeset	339 public:
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	340 uint _pushed; // 0 until region is pushed onto a worker's stack
0 a61af66fc99e Initial load duke parents: diff changeset	341 private:
a61af66fc99e Initial load duke parents: diff changeset	342 #endif
a61af66fc99e Initial load duke parents: diff changeset	343 };
a61af66fc99e Initial load duke parents: diff changeset	344
a61af66fc99e Initial load duke parents: diff changeset	345 public:
a61af66fc99e Initial load duke parents: diff changeset	346 ParallelCompactData();
a61af66fc99e Initial load duke parents: diff changeset	347 bool initialize(MemRegion covered_region);
a61af66fc99e Initial load duke parents: diff changeset	348
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	349 size_t region_count() const { return _region_count; }
0 a61af66fc99e Initial load duke parents: diff changeset	350
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	351 // Convert region indices to/from RegionData pointers.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	352 inline RegionData* region(size_t region_idx) const;
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	353 inline size_t region(const RegionData* const region_ptr) const;
0 a61af66fc99e Initial load duke parents: diff changeset	354
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	355 // Returns true if the given address is contained within the region
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	356 bool region_contains(size_t region_index, HeapWord* addr);
0 a61af66fc99e Initial load duke parents: diff changeset	357
a61af66fc99e Initial load duke parents: diff changeset	358 void add_obj(HeapWord* addr, size_t len);
a61af66fc99e Initial load duke parents: diff changeset	359 void add_obj(oop p, size_t len) { add_obj((HeapWord*)p, len); }
a61af66fc99e Initial load duke parents: diff changeset	360
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	361 // Fill in the regions covering [beg, end) so that no data moves; i.e., the
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	362 // destination of region n is simply the start of region n. The argument beg
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	363 // must be region-aligned; end need not be.
0 a61af66fc99e Initial load duke parents: diff changeset	364 void summarize_dense_prefix(HeapWord* beg, HeapWord* end);
a61af66fc99e Initial load duke parents: diff changeset	365
482 7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	366 HeapWord* summarize_split_space(size_t src_region, SplitInfo& split_info,
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	367 HeapWord* destination, HeapWord* target_end,
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	368 HeapWord** target_next);
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	369 bool summarize(SplitInfo& split_info,
0 a61af66fc99e Initial load duke parents: diff changeset	370 HeapWord* source_beg, HeapWord* source_end,
482 7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	371 HeapWord** source_next,
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	372 HeapWord* target_beg, HeapWord* target_end,
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	373 HeapWord** target_next);
0 a61af66fc99e Initial load duke parents: diff changeset	374
a61af66fc99e Initial load duke parents: diff changeset	375 void clear();
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	376 void clear_range(size_t beg_region, size_t end_region);
0 a61af66fc99e Initial load duke parents: diff changeset	377 void clear_range(HeapWord* beg, HeapWord* end) {
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	378 clear_range(addr_to_region_idx(beg), addr_to_region_idx(end));
0 a61af66fc99e Initial load duke parents: diff changeset	379 }
a61af66fc99e Initial load duke parents: diff changeset	380
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	381 // Return the number of words between addr and the start of the region
0 a61af66fc99e Initial load duke parents: diff changeset	382 // containing addr.
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	383 inline size_t region_offset(const HeapWord* addr) const;
0 a61af66fc99e Initial load duke parents: diff changeset	384
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	385 // Convert addresses to/from a region index or region pointer.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	386 inline size_t addr_to_region_idx(const HeapWord* addr) const;
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	387 inline RegionData* addr_to_region_ptr(const HeapWord* addr) const;
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	388 inline HeapWord* region_to_addr(size_t region) const;
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	389 inline HeapWord* region_to_addr(size_t region, size_t offset) const;
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	390 inline HeapWord* region_to_addr(const RegionData* region) const;
0 a61af66fc99e Initial load duke parents: diff changeset	391
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	392 inline HeapWord* region_align_down(HeapWord* addr) const;
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	393 inline HeapWord* region_align_up(HeapWord* addr) const;
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	394 inline bool is_region_aligned(HeapWord* addr) const;
0 a61af66fc99e Initial load duke parents: diff changeset	395
a61af66fc99e Initial load duke parents: diff changeset	396 // Return the address one past the end of the partial object.
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	397 HeapWord* partial_obj_end(size_t region_idx) const;
0 a61af66fc99e Initial load duke parents: diff changeset	398
a61af66fc99e Initial load duke parents: diff changeset	399 // Return the new location of the object p after the
a61af66fc99e Initial load duke parents: diff changeset	400 // the compaction.
a61af66fc99e Initial load duke parents: diff changeset	401 HeapWord* calc_new_pointer(HeapWord* addr);
a61af66fc99e Initial load duke parents: diff changeset	402
a61af66fc99e Initial load duke parents: diff changeset	403 HeapWord* calc_new_pointer(oop p) {
a61af66fc99e Initial load duke parents: diff changeset	404 return calc_new_pointer((HeapWord*) p);
a61af66fc99e Initial load duke parents: diff changeset	405 }
a61af66fc99e Initial load duke parents: diff changeset	406
a61af66fc99e Initial load duke parents: diff changeset	407 #ifdef ASSERT
a61af66fc99e Initial load duke parents: diff changeset	408 void verify_clear(const PSVirtualSpace* vspace);
a61af66fc99e Initial load duke parents: diff changeset	409 void verify_clear();
a61af66fc99e Initial load duke parents: diff changeset	410 #endif // #ifdef ASSERT
a61af66fc99e Initial load duke parents: diff changeset	411
a61af66fc99e Initial load duke parents: diff changeset	412 private:
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	413 bool initialize_region_data(size_t region_size);
0 a61af66fc99e Initial load duke parents: diff changeset	414 PSVirtualSpace* create_vspace(size_t count, size_t element_size);
a61af66fc99e Initial load duke parents: diff changeset	415
a61af66fc99e Initial load duke parents: diff changeset	416 private:
a61af66fc99e Initial load duke parents: diff changeset	417 HeapWord* _region_start;
a61af66fc99e Initial load duke parents: diff changeset	418 #ifdef ASSERT
a61af66fc99e Initial load duke parents: diff changeset	419 HeapWord* _region_end;
a61af66fc99e Initial load duke parents: diff changeset	420 #endif // #ifdef ASSERT
a61af66fc99e Initial load duke parents: diff changeset	421
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	422 PSVirtualSpace* _region_vspace;
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	423 RegionData* _region_data;
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	424 size_t _region_count;
0 a61af66fc99e Initial load duke parents: diff changeset	425 };
a61af66fc99e Initial load duke parents: diff changeset	426
a61af66fc99e Initial load duke parents: diff changeset	427 inline uint
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	428 ParallelCompactData::RegionData::destination_count_raw() const
0 a61af66fc99e Initial load duke parents: diff changeset	429 {
a61af66fc99e Initial load duke parents: diff changeset	430 return _dc_and_los & dc_mask;
a61af66fc99e Initial load duke parents: diff changeset	431 }
a61af66fc99e Initial load duke parents: diff changeset	432
a61af66fc99e Initial load duke parents: diff changeset	433 inline uint
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	434 ParallelCompactData::RegionData::destination_count() const
0 a61af66fc99e Initial load duke parents: diff changeset	435 {
a61af66fc99e Initial load duke parents: diff changeset	436 return destination_count_raw() >> dc_shift;
a61af66fc99e Initial load duke parents: diff changeset	437 }
a61af66fc99e Initial load duke parents: diff changeset	438
a61af66fc99e Initial load duke parents: diff changeset	439 inline void
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	440 ParallelCompactData::RegionData::set_destination_count(uint count)
0 a61af66fc99e Initial load duke parents: diff changeset	441 {
a61af66fc99e Initial load duke parents: diff changeset	442 assert(count <= (dc_completed >> dc_shift), "count too large");
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	443 const region_sz_t live_sz = (region_sz_t) live_obj_size();
0 a61af66fc99e Initial load duke parents: diff changeset	444 _dc_and_los = (count << dc_shift) \| live_sz;
a61af66fc99e Initial load duke parents: diff changeset	445 }
a61af66fc99e Initial load duke parents: diff changeset	446
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	447 inline void ParallelCompactData::RegionData::set_live_obj_size(size_t words)
0 a61af66fc99e Initial load duke parents: diff changeset	448 {
a61af66fc99e Initial load duke parents: diff changeset	449 assert(words <= los_mask, "would overflow");
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	450 _dc_and_los = destination_count_raw() \| (region_sz_t)words;
0 a61af66fc99e Initial load duke parents: diff changeset	451 }
a61af66fc99e Initial load duke parents: diff changeset	452
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	453 inline void ParallelCompactData::RegionData::decrement_destination_count()
0 a61af66fc99e Initial load duke parents: diff changeset	454 {
a61af66fc99e Initial load duke parents: diff changeset	455 assert(_dc_and_los < dc_claimed, "already claimed");
a61af66fc99e Initial load duke parents: diff changeset	456 assert(_dc_and_los >= dc_one, "count would go negative");
a61af66fc99e Initial load duke parents: diff changeset	457 Atomic::add((int)dc_mask, (volatile int*)&_dc_and_los);
a61af66fc99e Initial load duke parents: diff changeset	458 }
a61af66fc99e Initial load duke parents: diff changeset	459
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	460 inline HeapWord* ParallelCompactData::RegionData::data_location() const
0 a61af66fc99e Initial load duke parents: diff changeset	461 {
a61af66fc99e Initial load duke parents: diff changeset	462 DEBUG_ONLY(return _data_location;)
a61af66fc99e Initial load duke parents: diff changeset	463 NOT_DEBUG(return NULL;)
a61af66fc99e Initial load duke parents: diff changeset	464 }
a61af66fc99e Initial load duke parents: diff changeset	465
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	466 inline HeapWord* ParallelCompactData::RegionData::highest_ref() const
0 a61af66fc99e Initial load duke parents: diff changeset	467 {
a61af66fc99e Initial load duke parents: diff changeset	468 DEBUG_ONLY(return _highest_ref;)
a61af66fc99e Initial load duke parents: diff changeset	469 NOT_DEBUG(return NULL;)
a61af66fc99e Initial load duke parents: diff changeset	470 }
a61af66fc99e Initial load duke parents: diff changeset	471
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	472 inline void ParallelCompactData::RegionData::set_data_location(HeapWord* addr)
0 a61af66fc99e Initial load duke parents: diff changeset	473 {
a61af66fc99e Initial load duke parents: diff changeset	474 DEBUG_ONLY(_data_location = addr;)
a61af66fc99e Initial load duke parents: diff changeset	475 }
a61af66fc99e Initial load duke parents: diff changeset	476
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	477 inline void ParallelCompactData::RegionData::set_completed()
0 a61af66fc99e Initial load duke parents: diff changeset	478 {
a61af66fc99e Initial load duke parents: diff changeset	479 assert(claimed(), "must be claimed first");
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	480 _dc_and_los = dc_completed \| (region_sz_t) live_obj_size();
0 a61af66fc99e Initial load duke parents: diff changeset	481 }
a61af66fc99e Initial load duke parents: diff changeset	482
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	483 // MT-unsafe claiming of a region. Should only be used during single threaded
0 a61af66fc99e Initial load duke parents: diff changeset	484 // execution.
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	485 inline bool ParallelCompactData::RegionData::claim_unsafe()
0 a61af66fc99e Initial load duke parents: diff changeset	486 {
a61af66fc99e Initial load duke parents: diff changeset	487 if (available()) {
a61af66fc99e Initial load duke parents: diff changeset	488 _dc_and_los \|= dc_claimed;
a61af66fc99e Initial load duke parents: diff changeset	489 return true;
a61af66fc99e Initial load duke parents: diff changeset	490 }
a61af66fc99e Initial load duke parents: diff changeset	491 return false;
a61af66fc99e Initial load duke parents: diff changeset	492 }
a61af66fc99e Initial load duke parents: diff changeset	493
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	494 inline void ParallelCompactData::RegionData::add_live_obj(size_t words)
0 a61af66fc99e Initial load duke parents: diff changeset	495 {
a61af66fc99e Initial load duke parents: diff changeset	496 assert(words <= (size_t)los_mask - live_obj_size(), "overflow");
a61af66fc99e Initial load duke parents: diff changeset	497 Atomic::add((int) words, (volatile int*) &_dc_and_los);
a61af66fc99e Initial load duke parents: diff changeset	498 }
a61af66fc99e Initial load duke parents: diff changeset	499
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	500 inline void ParallelCompactData::RegionData::set_highest_ref(HeapWord* addr)
0 a61af66fc99e Initial load duke parents: diff changeset	501 {
a61af66fc99e Initial load duke parents: diff changeset	502 #ifdef ASSERT
a61af66fc99e Initial load duke parents: diff changeset	503 HeapWord* tmp = _highest_ref;
a61af66fc99e Initial load duke parents: diff changeset	504 while (addr > tmp) {
a61af66fc99e Initial load duke parents: diff changeset	505 tmp = (HeapWord*)Atomic::cmpxchg_ptr(addr, &_highest_ref, tmp);
a61af66fc99e Initial load duke parents: diff changeset	506 }
a61af66fc99e Initial load duke parents: diff changeset	507 #endif // #ifdef ASSERT
a61af66fc99e Initial load duke parents: diff changeset	508 }
a61af66fc99e Initial load duke parents: diff changeset	509
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	510 inline bool ParallelCompactData::RegionData::claim()
0 a61af66fc99e Initial load duke parents: diff changeset	511 {
a61af66fc99e Initial load duke parents: diff changeset	512 const int los = (int) live_obj_size();
a61af66fc99e Initial load duke parents: diff changeset	513 const int old = Atomic::cmpxchg(dc_claimed \| los,
a61af66fc99e Initial load duke parents: diff changeset	514 (volatile int*) &_dc_and_los, los);
a61af66fc99e Initial load duke parents: diff changeset	515 return old == los;
a61af66fc99e Initial load duke parents: diff changeset	516 }
a61af66fc99e Initial load duke parents: diff changeset	517
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	518 inline ParallelCompactData::RegionData*
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	519 ParallelCompactData::region(size_t region_idx) const
0 a61af66fc99e Initial load duke parents: diff changeset	520 {
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	521 assert(region_idx <= region_count(), "bad arg");
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	522 return _region_data + region_idx;
0 a61af66fc99e Initial load duke parents: diff changeset	523 }
a61af66fc99e Initial load duke parents: diff changeset	524
a61af66fc99e Initial load duke parents: diff changeset	525 inline size_t
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	526 ParallelCompactData::region(const RegionData* const region_ptr) const
0 a61af66fc99e Initial load duke parents: diff changeset	527 {
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	528 assert(region_ptr >= _region_data, "bad arg");
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	529 assert(region_ptr <= _region_data + region_count(), "bad arg");
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	530 return pointer_delta(region_ptr, _region_data, sizeof(RegionData));
0 a61af66fc99e Initial load duke parents: diff changeset	531 }
a61af66fc99e Initial load duke parents: diff changeset	532
a61af66fc99e Initial load duke parents: diff changeset	533 inline size_t
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	534 ParallelCompactData::region_offset(const HeapWord* addr) const
0 a61af66fc99e Initial load duke parents: diff changeset	535 {
a61af66fc99e Initial load duke parents: diff changeset	536 assert(addr >= _region_start, "bad addr");
a61af66fc99e Initial load duke parents: diff changeset	537 assert(addr <= _region_end, "bad addr");
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	538 return (size_t(addr) & RegionAddrOffsetMask) >> LogHeapWordSize;
0 a61af66fc99e Initial load duke parents: diff changeset	539 }
a61af66fc99e Initial load duke parents: diff changeset	540
a61af66fc99e Initial load duke parents: diff changeset	541 inline size_t
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	542 ParallelCompactData::addr_to_region_idx(const HeapWord* addr) const
0 a61af66fc99e Initial load duke parents: diff changeset	543 {
a61af66fc99e Initial load duke parents: diff changeset	544 assert(addr >= _region_start, "bad addr");
a61af66fc99e Initial load duke parents: diff changeset	545 assert(addr <= _region_end, "bad addr");
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	546 return pointer_delta(addr, _region_start) >> Log2RegionSize;
0 a61af66fc99e Initial load duke parents: diff changeset	547 }
a61af66fc99e Initial load duke parents: diff changeset	548
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	549 inline ParallelCompactData::RegionData*
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	550 ParallelCompactData::addr_to_region_ptr(const HeapWord* addr) const
0 a61af66fc99e Initial load duke parents: diff changeset	551 {
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	552 return region(addr_to_region_idx(addr));
0 a61af66fc99e Initial load duke parents: diff changeset	553 }
a61af66fc99e Initial load duke parents: diff changeset	554
a61af66fc99e Initial load duke parents: diff changeset	555 inline HeapWord*
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	556 ParallelCompactData::region_to_addr(size_t region) const
0 a61af66fc99e Initial load duke parents: diff changeset	557 {
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	558 assert(region <= _region_count, "region out of range");
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	559 return _region_start + (region << Log2RegionSize);
0 a61af66fc99e Initial load duke parents: diff changeset	560 }
a61af66fc99e Initial load duke parents: diff changeset	561
a61af66fc99e Initial load duke parents: diff changeset	562 inline HeapWord*
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	563 ParallelCompactData::region_to_addr(const RegionData* region) const
0 a61af66fc99e Initial load duke parents: diff changeset	564 {
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	565 return region_to_addr(pointer_delta(region, _region_data,
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	566 sizeof(RegionData)));
0 a61af66fc99e Initial load duke parents: diff changeset	567 }
a61af66fc99e Initial load duke parents: diff changeset	568
a61af66fc99e Initial load duke parents: diff changeset	569 inline HeapWord*
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	570 ParallelCompactData::region_to_addr(size_t region, size_t offset) const
0 a61af66fc99e Initial load duke parents: diff changeset	571 {
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	572 assert(region <= _region_count, "region out of range");
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	573 assert(offset < RegionSize, "offset too big"); // This may be too strict.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	574 return region_to_addr(region) + offset;
0 a61af66fc99e Initial load duke parents: diff changeset	575 }
a61af66fc99e Initial load duke parents: diff changeset	576
a61af66fc99e Initial load duke parents: diff changeset	577 inline HeapWord*
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	578 ParallelCompactData::region_align_down(HeapWord* addr) const
0 a61af66fc99e Initial load duke parents: diff changeset	579 {
a61af66fc99e Initial load duke parents: diff changeset	580 assert(addr >= _region_start, "bad addr");
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	581 assert(addr < _region_end + RegionSize, "bad addr");
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	582 return (HeapWord*)(size_t(addr) & RegionAddrMask);
0 a61af66fc99e Initial load duke parents: diff changeset	583 }
a61af66fc99e Initial load duke parents: diff changeset	584
a61af66fc99e Initial load duke parents: diff changeset	585 inline HeapWord*
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	586 ParallelCompactData::region_align_up(HeapWord* addr) const
0 a61af66fc99e Initial load duke parents: diff changeset	587 {
a61af66fc99e Initial load duke parents: diff changeset	588 assert(addr >= _region_start, "bad addr");
a61af66fc99e Initial load duke parents: diff changeset	589 assert(addr <= _region_end, "bad addr");
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	590 return region_align_down(addr + RegionSizeOffsetMask);
0 a61af66fc99e Initial load duke parents: diff changeset	591 }
a61af66fc99e Initial load duke parents: diff changeset	592
a61af66fc99e Initial load duke parents: diff changeset	593 inline bool
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	594 ParallelCompactData::is_region_aligned(HeapWord* addr) const
0 a61af66fc99e Initial load duke parents: diff changeset	595 {
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	596 return region_offset(addr) == 0;
0 a61af66fc99e Initial load duke parents: diff changeset	597 }
a61af66fc99e Initial load duke parents: diff changeset	598
a61af66fc99e Initial load duke parents: diff changeset	599 // Abstract closure for use with ParMarkBitMap::iterate(), which will invoke the
a61af66fc99e Initial load duke parents: diff changeset	600 // do_addr() method.
a61af66fc99e Initial load duke parents: diff changeset	601 //
a61af66fc99e Initial load duke parents: diff changeset	602 // The closure is initialized with the number of heap words to process
a61af66fc99e Initial load duke parents: diff changeset	603 // (words_remaining()), and becomes 'full' when it reaches 0. The do_addr()
a61af66fc99e Initial load duke parents: diff changeset	604 // methods in subclasses should update the total as words are processed. Since
a61af66fc99e Initial load duke parents: diff changeset	605 // only one subclass actually uses this mechanism to terminate iteration, the
a61af66fc99e Initial load duke parents: diff changeset	606 // default initial value is > 0. The implementation is here and not in the
a61af66fc99e Initial load duke parents: diff changeset	607 // single subclass that uses it to avoid making is_full() virtual, and thus
a61af66fc99e Initial load duke parents: diff changeset	608 // adding a virtual call per live object.
a61af66fc99e Initial load duke parents: diff changeset	609
a61af66fc99e Initial load duke parents: diff changeset	610 class ParMarkBitMapClosure: public StackObj {
a61af66fc99e Initial load duke parents: diff changeset	611 public:
a61af66fc99e Initial load duke parents: diff changeset	612 typedef ParMarkBitMap::idx_t idx_t;
a61af66fc99e Initial load duke parents: diff changeset	613 typedef ParMarkBitMap::IterationStatus IterationStatus;
a61af66fc99e Initial load duke parents: diff changeset	614
a61af66fc99e Initial load duke parents: diff changeset	615 public:
a61af66fc99e Initial load duke parents: diff changeset	616 inline ParMarkBitMapClosure(ParMarkBitMap* mbm, ParCompactionManager* cm,
a61af66fc99e Initial load duke parents: diff changeset	617 size_t words = max_uintx);
a61af66fc99e Initial load duke parents: diff changeset	618
a61af66fc99e Initial load duke parents: diff changeset	619 inline ParCompactionManager* compaction_manager() const;
a61af66fc99e Initial load duke parents: diff changeset	620 inline ParMarkBitMap* bitmap() const;
a61af66fc99e Initial load duke parents: diff changeset	621 inline size_t words_remaining() const;
a61af66fc99e Initial load duke parents: diff changeset	622 inline bool is_full() const;
a61af66fc99e Initial load duke parents: diff changeset	623 inline HeapWord* source() const;
a61af66fc99e Initial load duke parents: diff changeset	624
a61af66fc99e Initial load duke parents: diff changeset	625 inline void set_source(HeapWord* addr);
a61af66fc99e Initial load duke parents: diff changeset	626
a61af66fc99e Initial load duke parents: diff changeset	627 virtual IterationStatus do_addr(HeapWord* addr, size_t words) = 0;
a61af66fc99e Initial load duke parents: diff changeset	628
a61af66fc99e Initial load duke parents: diff changeset	629 protected:
a61af66fc99e Initial load duke parents: diff changeset	630 inline void decrement_words_remaining(size_t words);
a61af66fc99e Initial load duke parents: diff changeset	631
a61af66fc99e Initial load duke parents: diff changeset	632 private:
a61af66fc99e Initial load duke parents: diff changeset	633 ParMarkBitMap* const _bitmap;
a61af66fc99e Initial load duke parents: diff changeset	634 ParCompactionManager* const _compaction_manager;
a61af66fc99e Initial load duke parents: diff changeset	635 DEBUG_ONLY(const size_t _initial_words_remaining;) // Useful in debugger.
a61af66fc99e Initial load duke parents: diff changeset	636 size_t _words_remaining; // Words left to copy.
a61af66fc99e Initial load duke parents: diff changeset	637
a61af66fc99e Initial load duke parents: diff changeset	638 protected:
a61af66fc99e Initial load duke parents: diff changeset	639 HeapWord* _source; // Next addr that would be read.
a61af66fc99e Initial load duke parents: diff changeset	640 };
a61af66fc99e Initial load duke parents: diff changeset	641
a61af66fc99e Initial load duke parents: diff changeset	642 inline
a61af66fc99e Initial load duke parents: diff changeset	643 ParMarkBitMapClosure::ParMarkBitMapClosure(ParMarkBitMap* bitmap,
a61af66fc99e Initial load duke parents: diff changeset	644 ParCompactionManager* cm,
a61af66fc99e Initial load duke parents: diff changeset	645 size_t words):
a61af66fc99e Initial load duke parents: diff changeset	646 _bitmap(bitmap), _compaction_manager(cm)
a61af66fc99e Initial load duke parents: diff changeset	647 #ifdef ASSERT
a61af66fc99e Initial load duke parents: diff changeset	648 , _initial_words_remaining(words)
a61af66fc99e Initial load duke parents: diff changeset	649 #endif
a61af66fc99e Initial load duke parents: diff changeset	650 {
a61af66fc99e Initial load duke parents: diff changeset	651 _words_remaining = words;
a61af66fc99e Initial load duke parents: diff changeset	652 _source = NULL;
a61af66fc99e Initial load duke parents: diff changeset	653 }
a61af66fc99e Initial load duke parents: diff changeset	654
a61af66fc99e Initial load duke parents: diff changeset	655 inline ParCompactionManager* ParMarkBitMapClosure::compaction_manager() const {
a61af66fc99e Initial load duke parents: diff changeset	656 return _compaction_manager;
a61af66fc99e Initial load duke parents: diff changeset	657 }
a61af66fc99e Initial load duke parents: diff changeset	658
a61af66fc99e Initial load duke parents: diff changeset	659 inline ParMarkBitMap* ParMarkBitMapClosure::bitmap() const {
a61af66fc99e Initial load duke parents: diff changeset	660 return _bitmap;
a61af66fc99e Initial load duke parents: diff changeset	661 }
a61af66fc99e Initial load duke parents: diff changeset	662
a61af66fc99e Initial load duke parents: diff changeset	663 inline size_t ParMarkBitMapClosure::words_remaining() const {
a61af66fc99e Initial load duke parents: diff changeset	664 return _words_remaining;
a61af66fc99e Initial load duke parents: diff changeset	665 }
a61af66fc99e Initial load duke parents: diff changeset	666
a61af66fc99e Initial load duke parents: diff changeset	667 inline bool ParMarkBitMapClosure::is_full() const {
a61af66fc99e Initial load duke parents: diff changeset	668 return words_remaining() == 0;
a61af66fc99e Initial load duke parents: diff changeset	669 }
a61af66fc99e Initial load duke parents: diff changeset	670
a61af66fc99e Initial load duke parents: diff changeset	671 inline HeapWord* ParMarkBitMapClosure::source() const {
a61af66fc99e Initial load duke parents: diff changeset	672 return _source;
a61af66fc99e Initial load duke parents: diff changeset	673 }
a61af66fc99e Initial load duke parents: diff changeset	674
a61af66fc99e Initial load duke parents: diff changeset	675 inline void ParMarkBitMapClosure::set_source(HeapWord* addr) {
a61af66fc99e Initial load duke parents: diff changeset	676 _source = addr;
a61af66fc99e Initial load duke parents: diff changeset	677 }
a61af66fc99e Initial load duke parents: diff changeset	678
a61af66fc99e Initial load duke parents: diff changeset	679 inline void ParMarkBitMapClosure::decrement_words_remaining(size_t words) {
a61af66fc99e Initial load duke parents: diff changeset	680 assert(_words_remaining >= words, "processed too many words");
a61af66fc99e Initial load duke parents: diff changeset	681 _words_remaining -= words;
a61af66fc99e Initial load duke parents: diff changeset	682 }
a61af66fc99e Initial load duke parents: diff changeset	683
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	684 // The UseParallelOldGC collector is a stop-the-world garbage collector that
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	685 // does parts of the collection using parallel threads. The collection includes
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	686 // the tenured generation and the young generation. The permanent generation is
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	687 // collected at the same time as the other two generations but the permanent
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	688 // generation is collect by a single GC thread. The permanent generation is
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	689 // collected serially because of the requirement that during the processing of a
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	690 // klass AAA, any objects reference by AAA must already have been processed.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	691 // This requirement is enforced by a left (lower address) to right (higher
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	692 // address) sliding compaction.
263 12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	693 //
12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	694 // There are four phases of the collection.
12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	695 //
12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	696 // - marking phase
12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	697 // - summary phase
12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	698 // - compacting phase
12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	699 // - clean up phase
12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	700 //
12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	701 // Roughly speaking these phases correspond, respectively, to
12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	702 // - mark all the live objects
12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	703 // - calculate the destination of each object at the end of the collection
12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	704 // - move the objects to their destination
12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	705 // - update some references and reinitialize some variables
12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	706 //
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	707 // These three phases are invoked in PSParallelCompact::invoke_no_policy(). The
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	708 // marking phase is implemented in PSParallelCompact::marking_phase() and does a
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	709 // complete marking of the heap. The summary phase is implemented in
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	710 // PSParallelCompact::summary_phase(). The move and update phase is implemented
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	711 // in PSParallelCompact::compact().
263 12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	712 //
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	713 // A space that is being collected is divided into regions and with each region
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	714 // is associated an object of type ParallelCompactData. Each region is of a
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	715 // fixed size and typically will contain more than 1 object and may have parts
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	716 // of objects at the front and back of the region.
263 12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	717 //
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	718 // region -----+---------------------+----------
263 12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	719 // objects covered [ AAA )[ BBB )[ CCC )[ DDD )
12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	720 //
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	721 // The marking phase does a complete marking of all live objects in the heap.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	722 // The marking also compiles the size of the data for all live objects covered
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	723 // by the region. This size includes the part of any live object spanning onto
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	724 // the region (part of AAA if it is live) from the front, all live objects
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	725 // contained in the region (BBB and/or CCC if they are live), and the part of
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	726 // any live objects covered by the region that extends off the region (part of
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	727 // DDD if it is live). The marking phase uses multiple GC threads and marking
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	728 // is done in a bit array of type ParMarkBitMap. The marking of the bit map is
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	729 // done atomically as is the accumulation of the size of the live objects
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	730 // covered by a region.
263 12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	731 //
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	732 // The summary phase calculates the total live data to the left of each region
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	733 // XXX. Based on that total and the bottom of the space, it can calculate the
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	734 // starting location of the live data in XXX. The summary phase calculates for
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	735 // each region XXX quantites such as
263 12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	736 //
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	737 // - the amount of live data at the beginning of a region from an object
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	738 // entering the region.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	739 // - the location of the first live data on the region
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	740 // - a count of the number of regions receiving live data from XXX.
263 12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	741 //
12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	742 // See ParallelCompactData for precise details. The summary phase also
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	743 // calculates the dense prefix for the compaction. The dense prefix is a
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	744 // portion at the beginning of the space that is not moved. The objects in the
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	745 // dense prefix do need to have their object references updated. See method
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	746 // summarize_dense_prefix().
263 12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	747 //
12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	748 // The summary phase is done using 1 GC thread.
12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	749 //
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	750 // The compaction phase moves objects to their new location and updates all
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	751 // references in the object.
263 12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	752 //
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	753 // A current exception is that objects that cross a region boundary are moved
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	754 // but do not have their references updated. References are not updated because
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	755 // it cannot easily be determined if the klass pointer KKK for the object AAA
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	756 // has been updated. KKK likely resides in a region to the left of the region
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	757 // containing AAA. These AAA's have there references updated at the end in a
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	758 // clean up phase. See the method PSParallelCompact::update_deferred_objects().
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	759 // An alternate strategy is being investigated for this deferral of updating.
263 12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	760 //
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	761 // Compaction is done on a region basis. A region that is ready to be filled is
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	762 // put on a ready list and GC threads take region off the list and fill them. A
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	763 // region is ready to be filled if it empty of live objects. Such a region may
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	764 // have been initially empty (only contained dead objects) or may have had all
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	765 // its live objects copied out already. A region that compacts into itself is
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	766 // also ready for filling. The ready list is initially filled with empty
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	767 // regions and regions compacting into themselves. There is always at least 1
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	768 // region that can be put on the ready list. The regions are atomically added
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	769 // and removed from the ready list.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	770
0 a61af66fc99e Initial load duke parents: diff changeset	771 class PSParallelCompact : AllStatic {
a61af66fc99e Initial load duke parents: diff changeset	772 public:
a61af66fc99e Initial load duke parents: diff changeset	773 // Convenient access to type names.
a61af66fc99e Initial load duke parents: diff changeset	774 typedef ParMarkBitMap::idx_t idx_t;
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	775 typedef ParallelCompactData::RegionData RegionData;
0 a61af66fc99e Initial load duke parents: diff changeset	776
a61af66fc99e Initial load duke parents: diff changeset	777 typedef enum {
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	778 old_space_id, eden_space_id,
0 a61af66fc99e Initial load duke parents: diff changeset	779 from_space_id, to_space_id, last_space_id
a61af66fc99e Initial load duke parents: diff changeset	780 } SpaceId;
a61af66fc99e Initial load duke parents: diff changeset	781
a61af66fc99e Initial load duke parents: diff changeset	782 public:
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	783 // Inline closure decls
0 a61af66fc99e Initial load duke parents: diff changeset	784 //
a61af66fc99e Initial load duke parents: diff changeset	785 class IsAliveClosure: public BoolObjectClosure {
a61af66fc99e Initial load duke parents: diff changeset	786 public:
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	787 virtual void do_object(oop p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	788 virtual bool do_object_b(oop p);
0 a61af66fc99e Initial load duke parents: diff changeset	789 };
a61af66fc99e Initial load duke parents: diff changeset	790
a61af66fc99e Initial load duke parents: diff changeset	791 class KeepAliveClosure: public OopClosure {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	792 private:
0 a61af66fc99e Initial load duke parents: diff changeset	793 ParCompactionManager* _compaction_manager;
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	794 protected:
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	795 template <class T> inline void do_oop_work(T* p);
0 a61af66fc99e Initial load duke parents: diff changeset	796 public:
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	797 KeepAliveClosure(ParCompactionManager* cm) : _compaction_manager(cm) { }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	798 virtual void do_oop(oop* p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	799 virtual void do_oop(narrowOop* p);
0 a61af66fc99e Initial load duke parents: diff changeset	800 };
a61af66fc99e Initial load duke parents: diff changeset	801
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	802 // Current unused
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	803 class FollowRootClosure: public OopsInGenClosure {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	804 private:
0 a61af66fc99e Initial load duke parents: diff changeset	805 ParCompactionManager* _compaction_manager;
a61af66fc99e Initial load duke parents: diff changeset	806 public:
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	807 FollowRootClosure(ParCompactionManager* cm) : _compaction_manager(cm) { }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	808 virtual void do_oop(oop* p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	809 virtual void do_oop(narrowOop* p);
989 148e5441d916 6863023: need non-perm oops in code cache for JSR 292 jrose parents: 579 diff changeset	810 };
0 a61af66fc99e Initial load duke parents: diff changeset	811
a61af66fc99e Initial load duke parents: diff changeset	812 class FollowStackClosure: public VoidClosure {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	813 private:
0 a61af66fc99e Initial load duke parents: diff changeset	814 ParCompactionManager* _compaction_manager;
a61af66fc99e Initial load duke parents: diff changeset	815 public:
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	816 FollowStackClosure(ParCompactionManager* cm) : _compaction_manager(cm) { }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	817 virtual void do_void();
0 a61af66fc99e Initial load duke parents: diff changeset	818 };
a61af66fc99e Initial load duke parents: diff changeset	819
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	820 class AdjustPointerClosure: public OopClosure {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	821 private:
0 a61af66fc99e Initial load duke parents: diff changeset	822 bool _is_root;
a61af66fc99e Initial load duke parents: diff changeset	823 public:
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	824 AdjustPointerClosure(bool is_root) : _is_root(is_root) { }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	825 virtual void do_oop(oop* p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	826 virtual void do_oop(narrowOop* p);
989 148e5441d916 6863023: need non-perm oops in code cache for JSR 292 jrose parents: 579 diff changeset	827 // do not walk from thread stacks to the code cache on this phase
148e5441d916 6863023: need non-perm oops in code cache for JSR 292 jrose parents: 579 diff changeset	828 virtual void do_code_blob(CodeBlob* cb) const { }
0 a61af66fc99e Initial load duke parents: diff changeset	829 };
a61af66fc99e Initial load duke parents: diff changeset	830
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	831 class AdjustKlassClosure : public KlassClosure {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	832 public:
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	833 void do_klass(Klass* klass);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	834 };
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	835
0 a61af66fc99e Initial load duke parents: diff changeset	836 friend class KeepAliveClosure;
a61af66fc99e Initial load duke parents: diff changeset	837 friend class FollowStackClosure;
a61af66fc99e Initial load duke parents: diff changeset	838 friend class AdjustPointerClosure;
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	839 friend class AdjustKlassClosure;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	840 friend class FollowKlassClosure;
0 a61af66fc99e Initial load duke parents: diff changeset	841 friend class FollowRootClosure;
6735 aed758eda82a 7195833: NPG: Rename instanceClassLoaderKlass, instanceRefKlass and instanceMirrorKlass coleenp parents: 6725 diff changeset	842 friend class InstanceClassLoaderKlass;
0 a61af66fc99e Initial load duke parents: diff changeset	843 friend class RefProcTaskProxy;
a61af66fc99e Initial load duke parents: diff changeset	844
a61af66fc99e Initial load duke parents: diff changeset	845 private:
a61af66fc99e Initial load duke parents: diff changeset	846 static elapsedTimer _accumulated_time;
a61af66fc99e Initial load duke parents: diff changeset	847 static unsigned int _total_invocations;
a61af66fc99e Initial load duke parents: diff changeset	848 static unsigned int _maximum_compaction_gc_num;
a61af66fc99e Initial load duke parents: diff changeset	849 static jlong _time_of_last_gc; // ms
a61af66fc99e Initial load duke parents: diff changeset	850 static CollectorCounters* _counters;
a61af66fc99e Initial load duke parents: diff changeset	851 static ParMarkBitMap _mark_bitmap;
a61af66fc99e Initial load duke parents: diff changeset	852 static ParallelCompactData _summary_data;
a61af66fc99e Initial load duke parents: diff changeset	853 static IsAliveClosure _is_alive_closure;
a61af66fc99e Initial load duke parents: diff changeset	854 static SpaceInfo _space_info[last_space_id];
a61af66fc99e Initial load duke parents: diff changeset	855 static bool _print_phases;
a61af66fc99e Initial load duke parents: diff changeset	856 static AdjustPointerClosure _adjust_root_pointer_closure;
a61af66fc99e Initial load duke parents: diff changeset	857 static AdjustPointerClosure _adjust_pointer_closure;
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	858 static AdjustKlassClosure _adjust_klass_closure;
0 a61af66fc99e Initial load duke parents: diff changeset	859
a61af66fc99e Initial load duke parents: diff changeset	860 // Reference processing (used in ...follow_contents)
a61af66fc99e Initial load duke parents: diff changeset	861 static ReferenceProcessor* _ref_processor;
a61af66fc99e Initial load duke parents: diff changeset	862
a61af66fc99e Initial load duke parents: diff changeset	863 // Updated location of intArrayKlassObj.
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	864 static Klass* _updated_int_array_klass_obj;
0 a61af66fc99e Initial load duke parents: diff changeset	865
a61af66fc99e Initial load duke parents: diff changeset	866 // Values computed at initialization and used by dead_wood_limiter().
a61af66fc99e Initial load duke parents: diff changeset	867 static double _dwl_mean;
a61af66fc99e Initial load duke parents: diff changeset	868 static double _dwl_std_dev;
a61af66fc99e Initial load duke parents: diff changeset	869 static double _dwl_first_term;
a61af66fc99e Initial load duke parents: diff changeset	870 static double _dwl_adjustment;
a61af66fc99e Initial load duke parents: diff changeset	871 #ifdef ASSERT
a61af66fc99e Initial load duke parents: diff changeset	872 static bool _dwl_initialized;
a61af66fc99e Initial load duke parents: diff changeset	873 #endif // #ifdef ASSERT
a61af66fc99e Initial load duke parents: diff changeset	874
a61af66fc99e Initial load duke parents: diff changeset	875 private:
a61af66fc99e Initial load duke parents: diff changeset	876
a61af66fc99e Initial load duke parents: diff changeset	877 static void initialize_space_info();
a61af66fc99e Initial load duke parents: diff changeset	878
a61af66fc99e Initial load duke parents: diff changeset	879 // Return true if details about individual phases should be printed.
a61af66fc99e Initial load duke parents: diff changeset	880 static inline bool print_phases();
a61af66fc99e Initial load duke parents: diff changeset	881
a61af66fc99e Initial load duke parents: diff changeset	882 // Clear the marking bitmap and summary data that cover the specified space.
a61af66fc99e Initial load duke parents: diff changeset	883 static void clear_data_covering_space(SpaceId id);
a61af66fc99e Initial load duke parents: diff changeset	884
a61af66fc99e Initial load duke parents: diff changeset	885 static void pre_compact(PreGCValues* pre_gc_values);
a61af66fc99e Initial load duke parents: diff changeset	886 static void post_compact();
a61af66fc99e Initial load duke parents: diff changeset	887
a61af66fc99e Initial load duke parents: diff changeset	888 // Mark live objects
a61af66fc99e Initial load duke parents: diff changeset	889 static void marking_phase(ParCompactionManager* cm,
a61af66fc99e Initial load duke parents: diff changeset	890 bool maximum_heap_compaction);
a61af66fc99e Initial load duke parents: diff changeset	891
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	892 template <class T> static inline void adjust_pointer(T* p, bool is_root);
0 a61af66fc99e Initial load duke parents: diff changeset	893 static void adjust_root_pointer(oop* p) { adjust_pointer(p, true); }
a61af66fc99e Initial load duke parents: diff changeset	894
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	895 template <class T>
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	896 static inline void follow_root(ParCompactionManager* cm, T* p);
0 a61af66fc99e Initial load duke parents: diff changeset	897
a61af66fc99e Initial load duke parents: diff changeset	898 // Compute the dense prefix for the designated space. This is an experimental
a61af66fc99e Initial load duke parents: diff changeset	899 // implementation currently not used in production.
a61af66fc99e Initial load duke parents: diff changeset	900 static HeapWord* compute_dense_prefix_via_density(const SpaceId id,
a61af66fc99e Initial load duke parents: diff changeset	901 bool maximum_compaction);
a61af66fc99e Initial load duke parents: diff changeset	902
a61af66fc99e Initial load duke parents: diff changeset	903 // Methods used to compute the dense prefix.
a61af66fc99e Initial load duke parents: diff changeset	904
a61af66fc99e Initial load duke parents: diff changeset	905 // Compute the value of the normal distribution at x = density. The mean and
a61af66fc99e Initial load duke parents: diff changeset	906 // standard deviation are values saved by initialize_dead_wood_limiter().
a61af66fc99e Initial load duke parents: diff changeset	907 static inline double normal_distribution(double density);
a61af66fc99e Initial load duke parents: diff changeset	908
a61af66fc99e Initial load duke parents: diff changeset	909 // Initialize the static vars used by dead_wood_limiter().
a61af66fc99e Initial load duke parents: diff changeset	910 static void initialize_dead_wood_limiter();
a61af66fc99e Initial load duke parents: diff changeset	911
a61af66fc99e Initial load duke parents: diff changeset	912 // Return the percentage of space that can be treated as "dead wood" (i.e.,
a61af66fc99e Initial load duke parents: diff changeset	913 // not reclaimed).
a61af66fc99e Initial load duke parents: diff changeset	914 static double dead_wood_limiter(double density, size_t min_percent);
a61af66fc99e Initial load duke parents: diff changeset	915
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	916 // Find the first (left-most) region in the range [beg, end) that has at least
0 a61af66fc99e Initial load duke parents: diff changeset	917 // dead_words of dead space to the left. The argument beg must be the first
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	918 // region in the space that is not completely live.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	919 static RegionData* dead_wood_limit_region(const RegionData* beg,
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	920 const RegionData* end,
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	921 size_t dead_words);
0 a61af66fc99e Initial load duke parents: diff changeset	922
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	923 // Return a pointer to the first region in the range [beg, end) that is not
0 a61af66fc99e Initial load duke parents: diff changeset	924 // completely full.
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	925 static RegionData* first_dead_space_region(const RegionData* beg,
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	926 const RegionData* end);
0 a61af66fc99e Initial load duke parents: diff changeset	927
a61af66fc99e Initial load duke parents: diff changeset	928 // Return a value indicating the benefit or 'yield' if the compacted region
a61af66fc99e Initial load duke parents: diff changeset	929 // were to start (or equivalently if the dense prefix were to end) at the
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	930 // candidate region. Higher values are better.
0 a61af66fc99e Initial load duke parents: diff changeset	931 //
a61af66fc99e Initial load duke parents: diff changeset	932 // The value is based on the amount of space reclaimed vs. the costs of (a)
a61af66fc99e Initial load duke parents: diff changeset	933 // updating references in the dense prefix plus (b) copying objects and
a61af66fc99e Initial load duke parents: diff changeset	934 // updating references in the compacted region.
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	935 static inline double reclaimed_ratio(const RegionData* const candidate,
0 a61af66fc99e Initial load duke parents: diff changeset	936 HeapWord* const bottom,
a61af66fc99e Initial load duke parents: diff changeset	937 HeapWord* const top,
a61af66fc99e Initial load duke parents: diff changeset	938 HeapWord* const new_top);
a61af66fc99e Initial load duke parents: diff changeset	939
a61af66fc99e Initial load duke parents: diff changeset	940 // Compute the dense prefix for the designated space.
a61af66fc99e Initial load duke parents: diff changeset	941 static HeapWord* compute_dense_prefix(const SpaceId id,
a61af66fc99e Initial load duke parents: diff changeset	942 bool maximum_compaction);
a61af66fc99e Initial load duke parents: diff changeset	943
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	944 // Return true if dead space crosses onto the specified Region; bit must be
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	945 // the bit index corresponding to the first word of the Region.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	946 static inline bool dead_space_crosses_boundary(const RegionData* region,
0 a61af66fc99e Initial load duke parents: diff changeset	947 idx_t bit);
a61af66fc99e Initial load duke parents: diff changeset	948
a61af66fc99e Initial load duke parents: diff changeset	949 // Summary phase utility routine to fill dead space (if any) at the dense
a61af66fc99e Initial load duke parents: diff changeset	950 // prefix boundary. Should only be called if the the dense prefix is
a61af66fc99e Initial load duke parents: diff changeset	951 // non-empty.
a61af66fc99e Initial load duke parents: diff changeset	952 static void fill_dense_prefix_end(SpaceId id);
a61af66fc99e Initial load duke parents: diff changeset	953
482 7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	954 // Clear the summary data source_region field for the specified addresses.
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	955 static void clear_source_region(HeapWord* beg_addr, HeapWord* end_addr);
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	956
483 0f773163217d 6765954: par compact - stress mode for splitting young gen spaces jcoomes parents: 482 diff changeset	957 #ifndef PRODUCT
0f773163217d 6765954: par compact - stress mode for splitting young gen spaces jcoomes parents: 482 diff changeset	958 // Routines to provoke splitting a young gen space (ParallelOldGCSplitALot).
0f773163217d 6765954: par compact - stress mode for splitting young gen spaces jcoomes parents: 482 diff changeset	959
0f773163217d 6765954: par compact - stress mode for splitting young gen spaces jcoomes parents: 482 diff changeset	960 // Fill the region [start, start + words) with live object(s). Only usable
0f773163217d 6765954: par compact - stress mode for splitting young gen spaces jcoomes parents: 482 diff changeset	961 // for the old and permanent generations.
0f773163217d 6765954: par compact - stress mode for splitting young gen spaces jcoomes parents: 482 diff changeset	962 static void fill_with_live_objects(SpaceId id, HeapWord* const start,
0f773163217d 6765954: par compact - stress mode for splitting young gen spaces jcoomes parents: 482 diff changeset	963 size_t words);
0f773163217d 6765954: par compact - stress mode for splitting young gen spaces jcoomes parents: 482 diff changeset	964 // Include the new objects in the summary data.
0f773163217d 6765954: par compact - stress mode for splitting young gen spaces jcoomes parents: 482 diff changeset	965 static void summarize_new_objects(SpaceId id, HeapWord* start);
0f773163217d 6765954: par compact - stress mode for splitting young gen spaces jcoomes parents: 482 diff changeset	966
496 b27c885f75f9 6786188: par compact - "SplitALot" stress mode should fill to_space jcoomes parents: 495 diff changeset	967 // Add live objects to a survivor space since it's rare that both survivors
b27c885f75f9 6786188: par compact - "SplitALot" stress mode should fill to_space jcoomes parents: 495 diff changeset	968 // are non-empty.
b27c885f75f9 6786188: par compact - "SplitALot" stress mode should fill to_space jcoomes parents: 495 diff changeset	969 static void provoke_split_fill_survivor(SpaceId id);
b27c885f75f9 6786188: par compact - "SplitALot" stress mode should fill to_space jcoomes parents: 495 diff changeset	970
483 0f773163217d 6765954: par compact - stress mode for splitting young gen spaces jcoomes parents: 482 diff changeset	971 // Add live objects and/or choose the dense prefix to provoke splitting.
0f773163217d 6765954: par compact - stress mode for splitting young gen spaces jcoomes parents: 482 diff changeset	972 static void provoke_split(bool & maximum_compaction);
0f773163217d 6765954: par compact - stress mode for splitting young gen spaces jcoomes parents: 482 diff changeset	973 #endif
0f773163217d 6765954: par compact - stress mode for splitting young gen spaces jcoomes parents: 482 diff changeset	974
0 a61af66fc99e Initial load duke parents: diff changeset	975 static void summarize_spaces_quick();
a61af66fc99e Initial load duke parents: diff changeset	976 static void summarize_space(SpaceId id, bool maximum_compaction);
a61af66fc99e Initial load duke parents: diff changeset	977 static void summary_phase(ParCompactionManager* cm, bool maximum_compaction);
a61af66fc99e Initial load duke parents: diff changeset	978
a61af66fc99e Initial load duke parents: diff changeset	979 // Adjust addresses in roots. Does not adjust addresses in heap.
a61af66fc99e Initial load duke parents: diff changeset	980 static void adjust_roots();
a61af66fc99e Initial load duke parents: diff changeset	981
a61af66fc99e Initial load duke parents: diff changeset	982 // Move objects to new locations.
a61af66fc99e Initial load duke parents: diff changeset	983 static void compact_perm(ParCompactionManager* cm);
a61af66fc99e Initial load duke parents: diff changeset	984 static void compact();
a61af66fc99e Initial load duke parents: diff changeset	985
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	986 // Add available regions to the stack and draining tasks to the task queue.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	987 static void enqueue_region_draining_tasks(GCTaskQueue* q,
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	988 uint parallel_gc_threads);
0 a61af66fc99e Initial load duke parents: diff changeset	989
a61af66fc99e Initial load duke parents: diff changeset	990 // Add dense prefix update tasks to the task queue.
a61af66fc99e Initial load duke parents: diff changeset	991 static void enqueue_dense_prefix_tasks(GCTaskQueue* q,
a61af66fc99e Initial load duke parents: diff changeset	992 uint parallel_gc_threads);
a61af66fc99e Initial load duke parents: diff changeset	993
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	994 // Add region stealing tasks to the task queue.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	995 static void enqueue_region_stealing_tasks(
0 a61af66fc99e Initial load duke parents: diff changeset	996 GCTaskQueue* q,
a61af66fc99e Initial load duke parents: diff changeset	997 ParallelTaskTerminator* terminator_ptr,
a61af66fc99e Initial load duke parents: diff changeset	998 uint parallel_gc_threads);
a61af66fc99e Initial load duke parents: diff changeset	999
a61af66fc99e Initial load duke parents: diff changeset	1000 // If objects are left in eden after a collection, try to move the boundary
a61af66fc99e Initial load duke parents: diff changeset	1001 // and absorb them into the old gen. Returns true if eden was emptied.
a61af66fc99e Initial load duke parents: diff changeset	1002 static bool absorb_live_data_from_eden(PSAdaptiveSizePolicy* size_policy,
a61af66fc99e Initial load duke parents: diff changeset	1003 PSYoungGen* young_gen,
a61af66fc99e Initial load duke parents: diff changeset	1004 PSOldGen* old_gen);
a61af66fc99e Initial load duke parents: diff changeset	1005
a61af66fc99e Initial load duke parents: diff changeset	1006 // Reset time since last full gc
a61af66fc99e Initial load duke parents: diff changeset	1007 static void reset_millis_since_last_gc();
a61af66fc99e Initial load duke parents: diff changeset	1008
a61af66fc99e Initial load duke parents: diff changeset	1009 protected:
a61af66fc99e Initial load duke parents: diff changeset	1010 #ifdef VALIDATE_MARK_SWEEP
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1011 static GrowableArray<void> _root_refs_stack;
0 a61af66fc99e Initial load duke parents: diff changeset	1012 static GrowableArray<oop> * _live_oops;
a61af66fc99e Initial load duke parents: diff changeset	1013 static GrowableArray<oop> * _live_oops_moved_to;
a61af66fc99e Initial load duke parents: diff changeset	1014 static GrowableArray<size_t>* _live_oops_size;
a61af66fc99e Initial load duke parents: diff changeset	1015 static size_t _live_oops_index;
a61af66fc99e Initial load duke parents: diff changeset	1016 static size_t _live_oops_index_at_perm;
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1017 static GrowableArray<void> _other_refs_stack;
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1018 static GrowableArray<void> _adjusted_pointers;
0 a61af66fc99e Initial load duke parents: diff changeset	1019 static bool _pointer_tracking;
a61af66fc99e Initial load duke parents: diff changeset	1020 static bool _root_tracking;
a61af66fc99e Initial load duke parents: diff changeset	1021
a61af66fc99e Initial load duke parents: diff changeset	1022 // The following arrays are saved since the time of the last GC and
a61af66fc99e Initial load duke parents: diff changeset	1023 // assist in tracking down problems where someone has done an errant
a61af66fc99e Initial load duke parents: diff changeset	1024 // store into the heap, usually to an oop that wasn't properly
a61af66fc99e Initial load duke parents: diff changeset	1025 // handleized across a GC. If we crash or otherwise fail before the
a61af66fc99e Initial load duke parents: diff changeset	1026 // next GC, we can query these arrays to find out the object we had
a61af66fc99e Initial load duke parents: diff changeset	1027 // intended to do the store to (assuming it is still alive) and the
a61af66fc99e Initial load duke parents: diff changeset	1028 // offset within that object. Covered under RecordMarkSweepCompaction.
a61af66fc99e Initial load duke parents: diff changeset	1029 static GrowableArray<HeapWord> _cur_gc_live_oops;
a61af66fc99e Initial load duke parents: diff changeset	1030 static GrowableArray<HeapWord> _cur_gc_live_oops_moved_to;
a61af66fc99e Initial load duke parents: diff changeset	1031 static GrowableArray<size_t>* _cur_gc_live_oops_size;
a61af66fc99e Initial load duke parents: diff changeset	1032 static GrowableArray<HeapWord> _last_gc_live_oops;
a61af66fc99e Initial load duke parents: diff changeset	1033 static GrowableArray<HeapWord> _last_gc_live_oops_moved_to;
a61af66fc99e Initial load duke parents: diff changeset	1034 static GrowableArray<size_t>* _last_gc_live_oops_size;
a61af66fc99e Initial load duke parents: diff changeset	1035 #endif
a61af66fc99e Initial load duke parents: diff changeset	1036
a61af66fc99e Initial load duke parents: diff changeset	1037 public:
a61af66fc99e Initial load duke parents: diff changeset	1038 class MarkAndPushClosure: public OopClosure {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1039 private:
0 a61af66fc99e Initial load duke parents: diff changeset	1040 ParCompactionManager* _compaction_manager;
a61af66fc99e Initial load duke parents: diff changeset	1041 public:
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1042 MarkAndPushClosure(ParCompactionManager* cm) : _compaction_manager(cm) { }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1043 virtual void do_oop(oop* p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1044 virtual void do_oop(narrowOop* p);
0 a61af66fc99e Initial load duke parents: diff changeset	1045 };
a61af66fc99e Initial load duke parents: diff changeset	1046
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1047 // The one and only place to start following the classes.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1048 // Should only be applied to the ClassLoaderData klasses list.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1049 class FollowKlassClosure : public KlassClosure {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1050 private:
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1051 MarkAndPushClosure* _mark_and_push_closure;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1052 public:
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1053 FollowKlassClosure(MarkAndPushClosure* mark_and_push_closure) :
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1054 _mark_and_push_closure(mark_and_push_closure) { }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1055 void do_klass(Klass* klass);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1056 };
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1057
0 a61af66fc99e Initial load duke parents: diff changeset	1058 PSParallelCompact();
a61af66fc99e Initial load duke parents: diff changeset	1059
a61af66fc99e Initial load duke parents: diff changeset	1060 // Convenient accessor for Universe::heap().
a61af66fc99e Initial load duke parents: diff changeset	1061 static ParallelScavengeHeap* gc_heap() {
a61af66fc99e Initial load duke parents: diff changeset	1062 return (ParallelScavengeHeap*)Universe::heap();
a61af66fc99e Initial load duke parents: diff changeset	1063 }
a61af66fc99e Initial load duke parents: diff changeset	1064
a61af66fc99e Initial load duke parents: diff changeset	1065 static void invoke(bool maximum_heap_compaction);
4913 ab4422d0ed59 7146343: PS invoke methods should indicate the type of gc done jcoomes parents: 4099 diff changeset	1066 static bool invoke_no_policy(bool maximum_heap_compaction);
0 a61af66fc99e Initial load duke parents: diff changeset	1067
a61af66fc99e Initial load duke parents: diff changeset	1068 static void post_initialize();
a61af66fc99e Initial load duke parents: diff changeset	1069 // Perform initialization for PSParallelCompact that requires
a61af66fc99e Initial load duke parents: diff changeset	1070 // allocations. This should be called during the VM initialization
a61af66fc99e Initial load duke parents: diff changeset	1071 // at a pointer where it would be appropriate to return a JNI_ENOMEM
a61af66fc99e Initial load duke parents: diff changeset	1072 // in the event of a failure.
a61af66fc99e Initial load duke parents: diff changeset	1073 static bool initialize();
a61af66fc99e Initial load duke parents: diff changeset	1074
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1075 // Closure accessors
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1076 static OopClosure* adjust_pointer_closure() { return (OopClosure*)&_adjust_pointer_closure; }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1077 static OopClosure* adjust_root_pointer_closure() { return (OopClosure*)&_adjust_root_pointer_closure; }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1078 static KlassClosure* adjust_klass_closure() { return (KlassClosure*)&_adjust_klass_closure; }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1079 static BoolObjectClosure* is_alive_closure() { return (BoolObjectClosure*)&_is_alive_closure; }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1080
0 a61af66fc99e Initial load duke parents: diff changeset	1081 // Public accessors
a61af66fc99e Initial load duke parents: diff changeset	1082 static elapsedTimer* accumulated_time() { return &_accumulated_time; }
a61af66fc99e Initial load duke parents: diff changeset	1083 static unsigned int total_invocations() { return _total_invocations; }
a61af66fc99e Initial load duke parents: diff changeset	1084 static CollectorCounters* counters() { return _counters; }
a61af66fc99e Initial load duke parents: diff changeset	1085
a61af66fc99e Initial load duke parents: diff changeset	1086 // Used to add tasks
a61af66fc99e Initial load duke parents: diff changeset	1087 static GCTaskManager* const gc_task_manager();
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1088 static Klass* updated_int_array_klass_obj() {
0 a61af66fc99e Initial load duke parents: diff changeset	1089 return _updated_int_array_klass_obj;
a61af66fc99e Initial load duke parents: diff changeset	1090 }
a61af66fc99e Initial load duke parents: diff changeset	1091
a61af66fc99e Initial load duke parents: diff changeset	1092 // Marking support
a61af66fc99e Initial load duke parents: diff changeset	1093 static inline bool mark_obj(oop obj);
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1094 static inline bool is_marked(oop obj);
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1095 // Check mark and maybe push on marking stack
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1096 template <class T> static inline void mark_and_push(ParCompactionManager* cm,
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1097 T* p);
0 a61af66fc99e Initial load duke parents: diff changeset	1098
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1099 static void follow_klass(ParCompactionManager* cm, Klass* klass);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1100 static void adjust_klass(ParCompactionManager* cm, Klass* klass);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1101
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1102 static void follow_class_loader(ParCompactionManager* cm,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1103 ClassLoaderData* klass);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1104 static void adjust_class_loader(ParCompactionManager* cm,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1105 ClassLoaderData* klass);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1106
0 a61af66fc99e Initial load duke parents: diff changeset	1107 // Compaction support.
a61af66fc99e Initial load duke parents: diff changeset	1108 // Return true if p is in the range [beg_addr, end_addr).
a61af66fc99e Initial load duke parents: diff changeset	1109 static inline bool is_in(HeapWord* p, HeapWord* beg_addr, HeapWord* end_addr);
a61af66fc99e Initial load duke parents: diff changeset	1110 static inline bool is_in(oop* p, HeapWord* beg_addr, HeapWord* end_addr);
a61af66fc99e Initial load duke parents: diff changeset	1111
a61af66fc99e Initial load duke parents: diff changeset	1112 // Convenience wrappers for per-space data kept in _space_info.
a61af66fc99e Initial load duke parents: diff changeset	1113 static inline MutableSpace* space(SpaceId space_id);
a61af66fc99e Initial load duke parents: diff changeset	1114 static inline HeapWord* new_top(SpaceId space_id);
a61af66fc99e Initial load duke parents: diff changeset	1115 static inline HeapWord* dense_prefix(SpaceId space_id);
a61af66fc99e Initial load duke parents: diff changeset	1116 static inline ObjectStartArray* start_array(SpaceId space_id);
a61af66fc99e Initial load duke parents: diff changeset	1117
a61af66fc99e Initial load duke parents: diff changeset	1118 // Move and update the live objects in the specified space.
a61af66fc99e Initial load duke parents: diff changeset	1119 static void move_and_update(ParCompactionManager* cm, SpaceId space_id);
a61af66fc99e Initial load duke parents: diff changeset	1120
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1121 // Process the end of the given region range in the dense prefix.
0 a61af66fc99e Initial load duke parents: diff changeset	1122 // This includes saving any object not updated.
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1123 static void dense_prefix_regions_epilogue(ParCompactionManager* cm,
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1124 size_t region_start_index,
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1125 size_t region_end_index,
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1126 idx_t exiting_object_offset,
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1127 idx_t region_offset_start,
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1128 idx_t region_offset_end);
0 a61af66fc99e Initial load duke parents: diff changeset	1129
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1130 // Update a region in the dense prefix. For each live object
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1131 // in the region, update it's interior references. For each
0 a61af66fc99e Initial load duke parents: diff changeset	1132 // dead object, fill it with deadwood. Dead space at the end
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1133 // of a region range will be filled to the start of the next
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1134 // live object regardless of the region_index_end. None of the
0 a61af66fc99e Initial load duke parents: diff changeset	1135 // objects in the dense prefix move and dead space is dead
a61af66fc99e Initial load duke parents: diff changeset	1136 // (holds only dead objects that don't need any processing), so
a61af66fc99e Initial load duke parents: diff changeset	1137 // dead space can be filled in any order.
a61af66fc99e Initial load duke parents: diff changeset	1138 static void update_and_deadwood_in_dense_prefix(ParCompactionManager* cm,
a61af66fc99e Initial load duke parents: diff changeset	1139 SpaceId space_id,
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1140 size_t region_index_start,
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1141 size_t region_index_end);
0 a61af66fc99e Initial load duke parents: diff changeset	1142
a61af66fc99e Initial load duke parents: diff changeset	1143 // Return the address of the count + 1st live word in the range [beg, end).
a61af66fc99e Initial load duke parents: diff changeset	1144 static HeapWord* skip_live_words(HeapWord* beg, HeapWord* end, size_t count);
a61af66fc99e Initial load duke parents: diff changeset	1145
a61af66fc99e Initial load duke parents: diff changeset	1146 // Return the address of the word to be copied to dest_addr, which must be
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1147 // aligned to a region boundary.
0 a61af66fc99e Initial load duke parents: diff changeset	1148 static HeapWord* first_src_addr(HeapWord* const dest_addr,
482 7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	1149 SpaceId src_space_id,
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1150 size_t src_region_idx);
0 a61af66fc99e Initial load duke parents: diff changeset	1151
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1152 // Determine the next source region, set closure.source() to the start of the
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1153 // new region return the region index. Parameter end_addr is the address one
0 a61af66fc99e Initial load duke parents: diff changeset	1154 // beyond the end of source range just processed. If necessary, switch to a
a61af66fc99e Initial load duke parents: diff changeset	1155 // new source space and set src_space_id (in-out parameter) and src_space_top
a61af66fc99e Initial load duke parents: diff changeset	1156 // (out parameter) accordingly.
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1157 static size_t next_src_region(MoveAndUpdateClosure& closure,
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1158 SpaceId& src_space_id,
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1159 HeapWord*& src_space_top,
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1160 HeapWord* end_addr);
0 a61af66fc99e Initial load duke parents: diff changeset	1161
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1162 // Decrement the destination count for each non-empty source region in the
495 234c22e54b98 6784849: par compact - can fail when to_space is non-empty jcoomes parents: 483 diff changeset	1163 // range [beg_region, region(region_align_up(end_addr))). If the destination
234c22e54b98 6784849: par compact - can fail when to_space is non-empty jcoomes parents: 483 diff changeset	1164 // count for a region goes to 0 and it needs to be filled, enqueue it.
0 a61af66fc99e Initial load duke parents: diff changeset	1165 static void decrement_destination_counts(ParCompactionManager* cm,
495 234c22e54b98 6784849: par compact - can fail when to_space is non-empty jcoomes parents: 483 diff changeset	1166 SpaceId src_space_id,
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1167 size_t beg_region,
0 a61af66fc99e Initial load duke parents: diff changeset	1168 HeapWord* end_addr);
a61af66fc99e Initial load duke parents: diff changeset	1169
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1170 // Fill a region, copying objects from one or more source regions.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1171 static void fill_region(ParCompactionManager* cm, size_t region_idx);
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1172 static void fill_and_update_region(ParCompactionManager* cm, size_t region) {
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1173 fill_region(cm, region);
0 a61af66fc99e Initial load duke parents: diff changeset	1174 }
a61af66fc99e Initial load duke parents: diff changeset	1175
a61af66fc99e Initial load duke parents: diff changeset	1176 // Update the deferred objects in the space.
a61af66fc99e Initial load duke parents: diff changeset	1177 static void update_deferred_objects(ParCompactionManager* cm, SpaceId id);
a61af66fc99e Initial load duke parents: diff changeset	1178
a61af66fc99e Initial load duke parents: diff changeset	1179 static ParMarkBitMap* mark_bitmap() { return &_mark_bitmap; }
a61af66fc99e Initial load duke parents: diff changeset	1180 static ParallelCompactData& summary_data() { return _summary_data; }
a61af66fc99e Initial load duke parents: diff changeset	1181
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1182 static inline void adjust_pointer(oop* p) { adjust_pointer(p, false); }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1183 static inline void adjust_pointer(narrowOop* p) { adjust_pointer(p, false); }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1184
0 a61af66fc99e Initial load duke parents: diff changeset	1185 // Reference Processing
a61af66fc99e Initial load duke parents: diff changeset	1186 static ReferenceProcessor* const ref_processor() { return _ref_processor; }
a61af66fc99e Initial load duke parents: diff changeset	1187
a61af66fc99e Initial load duke parents: diff changeset	1188 // Return the SpaceId for the given address.
a61af66fc99e Initial load duke parents: diff changeset	1189 static SpaceId space_id(HeapWord* addr);
a61af66fc99e Initial load duke parents: diff changeset	1190
a61af66fc99e Initial load duke parents: diff changeset	1191 // Time since last full gc (in milliseconds).
a61af66fc99e Initial load duke parents: diff changeset	1192 static jlong millis_since_last_gc();
a61af66fc99e Initial load duke parents: diff changeset	1193
a61af66fc99e Initial load duke parents: diff changeset	1194 #ifdef VALIDATE_MARK_SWEEP
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1195 static void track_adjusted_pointer(void* p, bool isroot);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1196 static void check_adjust_pointer(void* p);
0 a61af66fc99e Initial load duke parents: diff changeset	1197 static void track_interior_pointers(oop obj);
a61af66fc99e Initial load duke parents: diff changeset	1198 static void check_interior_pointers();
a61af66fc99e Initial load duke parents: diff changeset	1199
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1200 static void reset_live_oop_tracking();
0 a61af66fc99e Initial load duke parents: diff changeset	1201 static void register_live_oop(oop p, size_t size);
a61af66fc99e Initial load duke parents: diff changeset	1202 static void validate_live_oop(oop p, size_t size);
a61af66fc99e Initial load duke parents: diff changeset	1203 static void live_oop_moved_to(HeapWord* q, size_t size, HeapWord* compaction_top);
a61af66fc99e Initial load duke parents: diff changeset	1204 static void compaction_complete();
a61af66fc99e Initial load duke parents: diff changeset	1205
a61af66fc99e Initial load duke parents: diff changeset	1206 // Querying operation of RecordMarkSweepCompaction results.
a61af66fc99e Initial load duke parents: diff changeset	1207 // Finds and prints the current base oop and offset for a word
a61af66fc99e Initial load duke parents: diff changeset	1208 // within an oop that was live during the last GC. Helpful for
a61af66fc99e Initial load duke parents: diff changeset	1209 // tracking down heap stomps.
a61af66fc99e Initial load duke parents: diff changeset	1210 static void print_new_location_of_heap_address(HeapWord* q);
a61af66fc99e Initial load duke parents: diff changeset	1211 #endif // #ifdef VALIDATE_MARK_SWEEP
a61af66fc99e Initial load duke parents: diff changeset	1212
a61af66fc99e Initial load duke parents: diff changeset	1213 #ifndef PRODUCT
a61af66fc99e Initial load duke parents: diff changeset	1214 // Debugging support.
a61af66fc99e Initial load duke parents: diff changeset	1215 static const char* space_names[last_space_id];
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1216 static void print_region_ranges();
0 a61af66fc99e Initial load duke parents: diff changeset	1217 static void print_dense_prefix_stats(const char* const algorithm,
a61af66fc99e Initial load duke parents: diff changeset	1218 const SpaceId id,
a61af66fc99e Initial load duke parents: diff changeset	1219 const bool maximum_compaction,
a61af66fc99e Initial load duke parents: diff changeset	1220 HeapWord* const addr);
482 7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	1221 static void summary_phase_msg(SpaceId dst_space_id,
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	1222 HeapWord* dst_beg, HeapWord* dst_end,
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	1223 SpaceId src_space_id,
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	1224 HeapWord* src_beg, HeapWord* src_end);
0 a61af66fc99e Initial load duke parents: diff changeset	1225 #endif // #ifndef PRODUCT
a61af66fc99e Initial load duke parents: diff changeset	1226
a61af66fc99e Initial load duke parents: diff changeset	1227 #ifdef ASSERT
495 234c22e54b98 6784849: par compact - can fail when to_space is non-empty jcoomes parents: 483 diff changeset	1228 // Sanity check the new location of a word in the heap.
234c22e54b98 6784849: par compact - can fail when to_space is non-empty jcoomes parents: 483 diff changeset	1229 static inline void check_new_location(HeapWord* old_addr, HeapWord* new_addr);
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1230 // Verify that all the regions have been emptied.
0 a61af66fc99e Initial load duke parents: diff changeset	1231 static void verify_complete(SpaceId space_id);
a61af66fc99e Initial load duke parents: diff changeset	1232 #endif // #ifdef ASSERT
a61af66fc99e Initial load duke parents: diff changeset	1233 };
a61af66fc99e Initial load duke parents: diff changeset	1234
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1235 inline bool PSParallelCompact::mark_obj(oop obj) {
0 a61af66fc99e Initial load duke parents: diff changeset	1236 const int obj_size = obj->size();
a61af66fc99e Initial load duke parents: diff changeset	1237 if (mark_bitmap()->mark_obj(obj, obj_size)) {
a61af66fc99e Initial load duke parents: diff changeset	1238 _summary_data.add_obj(obj, obj_size);
a61af66fc99e Initial load duke parents: diff changeset	1239 return true;
a61af66fc99e Initial load duke parents: diff changeset	1240 } else {
a61af66fc99e Initial load duke parents: diff changeset	1241 return false;
a61af66fc99e Initial load duke parents: diff changeset	1242 }
a61af66fc99e Initial load duke parents: diff changeset	1243 }
a61af66fc99e Initial load duke parents: diff changeset	1244
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1245 inline bool PSParallelCompact::is_marked(oop obj) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1246 return mark_bitmap()->is_marked(obj);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1247 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1248
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1249 template <class T>
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1250 inline void PSParallelCompact::follow_root(ParCompactionManager* cm, T* p) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1251 assert(!Universe::heap()->is_in_reserved(p),
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1252 "roots shouldn't be things within the heap");
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1253 #ifdef VALIDATE_MARK_SWEEP
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1254 if (ValidateMarkSweep) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1255 guarantee(!_root_refs_stack->contains(p), "should only be in here once");
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1256 _root_refs_stack->push(p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1257 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1258 #endif
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1259 T heap_oop = oopDesc::load_heap_oop(p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1260 if (!oopDesc::is_null(heap_oop)) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1261 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1262 if (mark_bitmap()->is_unmarked(obj)) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1263 if (mark_obj(obj)) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1264 obj->follow_contents(cm);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1265 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1266 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1267 }
1311 2a1472c30599 4396719: Mark Sweep stack overflow on deeply nested Object arrays jcoomes parents: 993 diff changeset	1268 cm->follow_marking_stacks();
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1269 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1270
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1271 template <class T>
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1272 inline void PSParallelCompact::mark_and_push(ParCompactionManager* cm, T* p) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1273 T heap_oop = oopDesc::load_heap_oop(p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1274 if (!oopDesc::is_null(heap_oop)) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1275 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop);
1638 b2a00dd3117c 6957084: simplify TaskQueue overflow handling jcoomes parents: 1579 diff changeset	1276 if (mark_bitmap()->is_unmarked(obj) && mark_obj(obj)) {
b2a00dd3117c 6957084: simplify TaskQueue overflow handling jcoomes parents: 1579 diff changeset	1277 cm->push(obj);
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1278 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1279 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1280 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1281
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1282 template <class T>
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1283 inline void PSParallelCompact::adjust_pointer(T* p, bool isroot) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1284 T heap_oop = oopDesc::load_heap_oop(p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1285 if (!oopDesc::is_null(heap_oop)) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1286 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1287 oop new_obj = (oop)summary_data().calc_new_pointer(obj);
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1288 assert(new_obj != NULL, // is forwarding ptr?
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1289 "should be forwarded");
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1290 // Just always do the update unconditionally?
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1291 if (new_obj != NULL) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1292 assert(Universe::heap()->is_in_reserved(new_obj),
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1293 "should be in object space");
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1294 oopDesc::encode_store_heap_oop_not_null(p, new_obj);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1295 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1296 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1297 VALIDATE_MARK_SWEEP_ONLY(track_adjusted_pointer(p, isroot));
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1298 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1299
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1300 template <class T>
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1301 inline void PSParallelCompact::KeepAliveClosure::do_oop_work(T* p) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1302 #ifdef VALIDATE_MARK_SWEEP
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1303 if (ValidateMarkSweep) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1304 if (!Universe::heap()->is_in_reserved(p)) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1305 _root_refs_stack->push(p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1306 } else {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1307 _other_refs_stack->push(p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1308 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1309 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1310 #endif
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1311 mark_and_push(_compaction_manager, p);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1312 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1313
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1314 inline bool PSParallelCompact::print_phases() {
0 a61af66fc99e Initial load duke parents: diff changeset	1315 return _print_phases;
a61af66fc99e Initial load duke parents: diff changeset	1316 }
a61af66fc99e Initial load duke parents: diff changeset	1317
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1318 inline double PSParallelCompact::normal_distribution(double density) {
0 a61af66fc99e Initial load duke parents: diff changeset	1319 assert(_dwl_initialized, "uninitialized");
a61af66fc99e Initial load duke parents: diff changeset	1320 const double squared_term = (density - _dwl_mean) / _dwl_std_dev;
a61af66fc99e Initial load duke parents: diff changeset	1321 return _dwl_first_term * exp(-0.5 * squared_term * squared_term);
a61af66fc99e Initial load duke parents: diff changeset	1322 }
a61af66fc99e Initial load duke parents: diff changeset	1323
a61af66fc99e Initial load duke parents: diff changeset	1324 inline bool
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1325 PSParallelCompact::dead_space_crosses_boundary(const RegionData* region,
0 a61af66fc99e Initial load duke parents: diff changeset	1326 idx_t bit)
a61af66fc99e Initial load duke parents: diff changeset	1327 {
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1328 assert(bit > 0, "cannot call this for the first bit/region");
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1329 assert(_summary_data.region_to_addr(region) == _mark_bitmap.bit_to_addr(bit),
0 a61af66fc99e Initial load duke parents: diff changeset	1330 "sanity check");
a61af66fc99e Initial load duke parents: diff changeset	1331
a61af66fc99e Initial load duke parents: diff changeset	1332 // Dead space crosses the boundary if (1) a partial object does not extend
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1333 // onto the region, (2) an object does not start at the beginning of the
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1334 // region, and (3) an object does not end at the end of the prior region.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1335 return region->partial_obj_size() == 0 &&
0 a61af66fc99e Initial load duke parents: diff changeset	1336 !_mark_bitmap.is_obj_beg(bit) &&
a61af66fc99e Initial load duke parents: diff changeset	1337 !_mark_bitmap.is_obj_end(bit - 1);
a61af66fc99e Initial load duke parents: diff changeset	1338 }
a61af66fc99e Initial load duke parents: diff changeset	1339
a61af66fc99e Initial load duke parents: diff changeset	1340 inline bool
a61af66fc99e Initial load duke parents: diff changeset	1341 PSParallelCompact::is_in(HeapWord* p, HeapWord* beg_addr, HeapWord* end_addr) {
a61af66fc99e Initial load duke parents: diff changeset	1342 return p >= beg_addr && p < end_addr;
a61af66fc99e Initial load duke parents: diff changeset	1343 }
a61af66fc99e Initial load duke parents: diff changeset	1344
a61af66fc99e Initial load duke parents: diff changeset	1345 inline bool
a61af66fc99e Initial load duke parents: diff changeset	1346 PSParallelCompact::is_in(oop* p, HeapWord* beg_addr, HeapWord* end_addr) {
a61af66fc99e Initial load duke parents: diff changeset	1347 return is_in((HeapWord*)p, beg_addr, end_addr);
a61af66fc99e Initial load duke parents: diff changeset	1348 }
a61af66fc99e Initial load duke parents: diff changeset	1349
a61af66fc99e Initial load duke parents: diff changeset	1350 inline MutableSpace* PSParallelCompact::space(SpaceId id) {
a61af66fc99e Initial load duke parents: diff changeset	1351 assert(id < last_space_id, "id out of range");
a61af66fc99e Initial load duke parents: diff changeset	1352 return _space_info[id].space();
a61af66fc99e Initial load duke parents: diff changeset	1353 }
a61af66fc99e Initial load duke parents: diff changeset	1354
a61af66fc99e Initial load duke parents: diff changeset	1355 inline HeapWord* PSParallelCompact::new_top(SpaceId id) {
a61af66fc99e Initial load duke parents: diff changeset	1356 assert(id < last_space_id, "id out of range");
a61af66fc99e Initial load duke parents: diff changeset	1357 return _space_info[id].new_top();
a61af66fc99e Initial load duke parents: diff changeset	1358 }
a61af66fc99e Initial load duke parents: diff changeset	1359
a61af66fc99e Initial load duke parents: diff changeset	1360 inline HeapWord* PSParallelCompact::dense_prefix(SpaceId id) {
a61af66fc99e Initial load duke parents: diff changeset	1361 assert(id < last_space_id, "id out of range");
a61af66fc99e Initial load duke parents: diff changeset	1362 return _space_info[id].dense_prefix();
a61af66fc99e Initial load duke parents: diff changeset	1363 }
a61af66fc99e Initial load duke parents: diff changeset	1364
a61af66fc99e Initial load duke parents: diff changeset	1365 inline ObjectStartArray* PSParallelCompact::start_array(SpaceId id) {
a61af66fc99e Initial load duke parents: diff changeset	1366 assert(id < last_space_id, "id out of range");
a61af66fc99e Initial load duke parents: diff changeset	1367 return _space_info[id].start_array();
a61af66fc99e Initial load duke parents: diff changeset	1368 }
a61af66fc99e Initial load duke parents: diff changeset	1369
495 234c22e54b98 6784849: par compact - can fail when to_space is non-empty jcoomes parents: 483 diff changeset	1370 #ifdef ASSERT
234c22e54b98 6784849: par compact - can fail when to_space is non-empty jcoomes parents: 483 diff changeset	1371 inline void
234c22e54b98 6784849: par compact - can fail when to_space is non-empty jcoomes parents: 483 diff changeset	1372 PSParallelCompact::check_new_location(HeapWord* old_addr, HeapWord* new_addr)
234c22e54b98 6784849: par compact - can fail when to_space is non-empty jcoomes parents: 483 diff changeset	1373 {
234c22e54b98 6784849: par compact - can fail when to_space is non-empty jcoomes parents: 483 diff changeset	1374 assert(old_addr >= new_addr \|\| space_id(old_addr) != space_id(new_addr),
234c22e54b98 6784849: par compact - can fail when to_space is non-empty jcoomes parents: 483 diff changeset	1375 "must move left or to a different space");
1571 2d127394260e 6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb kvn parents: 1311 diff changeset	1376 assert(is_object_aligned((intptr_t)old_addr) && is_object_aligned((intptr_t)new_addr),
2d127394260e 6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb kvn parents: 1311 diff changeset	1377 "checking alignment");
495 234c22e54b98 6784849: par compact - can fail when to_space is non-empty jcoomes parents: 483 diff changeset	1378 }
234c22e54b98 6784849: par compact - can fail when to_space is non-empty jcoomes parents: 483 diff changeset	1379 #endif // ASSERT
234c22e54b98 6784849: par compact - can fail when to_space is non-empty jcoomes parents: 483 diff changeset	1380
0 a61af66fc99e Initial load duke parents: diff changeset	1381 class MoveAndUpdateClosure: public ParMarkBitMapClosure {
a61af66fc99e Initial load duke parents: diff changeset	1382 public:
a61af66fc99e Initial load duke parents: diff changeset	1383 inline MoveAndUpdateClosure(ParMarkBitMap* bitmap, ParCompactionManager* cm,
a61af66fc99e Initial load duke parents: diff changeset	1384 ObjectStartArray* start_array,
a61af66fc99e Initial load duke parents: diff changeset	1385 HeapWord* destination, size_t words);
a61af66fc99e Initial load duke parents: diff changeset	1386
a61af66fc99e Initial load duke parents: diff changeset	1387 // Accessors.
a61af66fc99e Initial load duke parents: diff changeset	1388 HeapWord* destination() const { return _destination; }
a61af66fc99e Initial load duke parents: diff changeset	1389
a61af66fc99e Initial load duke parents: diff changeset	1390 // If the object will fit (size <= words_remaining()), copy it to the current
a61af66fc99e Initial load duke parents: diff changeset	1391 // destination, update the interior oops and the start array and return either
a61af66fc99e Initial load duke parents: diff changeset	1392 // full (if the closure is full) or incomplete. If the object will not fit,
a61af66fc99e Initial load duke parents: diff changeset	1393 // return would_overflow.
a61af66fc99e Initial load duke parents: diff changeset	1394 virtual IterationStatus do_addr(HeapWord* addr, size_t size);
a61af66fc99e Initial load duke parents: diff changeset	1395
a61af66fc99e Initial load duke parents: diff changeset	1396 // Copy enough words to fill this closure, starting at source(). Interior
a61af66fc99e Initial load duke parents: diff changeset	1397 // oops and the start array are not updated. Return full.
a61af66fc99e Initial load duke parents: diff changeset	1398 IterationStatus copy_until_full();
a61af66fc99e Initial load duke parents: diff changeset	1399
a61af66fc99e Initial load duke parents: diff changeset	1400 // Copy enough words to fill this closure or to the end of an object,
a61af66fc99e Initial load duke parents: diff changeset	1401 // whichever is smaller, starting at source(). Interior oops and the start
a61af66fc99e Initial load duke parents: diff changeset	1402 // array are not updated.
a61af66fc99e Initial load duke parents: diff changeset	1403 void copy_partial_obj();
a61af66fc99e Initial load duke parents: diff changeset	1404
a61af66fc99e Initial load duke parents: diff changeset	1405 protected:
a61af66fc99e Initial load duke parents: diff changeset	1406 // Update variables to indicate that word_count words were processed.
a61af66fc99e Initial load duke parents: diff changeset	1407 inline void update_state(size_t word_count);
a61af66fc99e Initial load duke parents: diff changeset	1408
a61af66fc99e Initial load duke parents: diff changeset	1409 protected:
a61af66fc99e Initial load duke parents: diff changeset	1410 ObjectStartArray* const _start_array;
a61af66fc99e Initial load duke parents: diff changeset	1411 HeapWord* _destination; // Next addr to be written.
a61af66fc99e Initial load duke parents: diff changeset	1412 };
a61af66fc99e Initial load duke parents: diff changeset	1413
a61af66fc99e Initial load duke parents: diff changeset	1414 inline
a61af66fc99e Initial load duke parents: diff changeset	1415 MoveAndUpdateClosure::MoveAndUpdateClosure(ParMarkBitMap* bitmap,
a61af66fc99e Initial load duke parents: diff changeset	1416 ParCompactionManager* cm,
a61af66fc99e Initial load duke parents: diff changeset	1417 ObjectStartArray* start_array,
a61af66fc99e Initial load duke parents: diff changeset	1418 HeapWord* destination,
a61af66fc99e Initial load duke parents: diff changeset	1419 size_t words) :
a61af66fc99e Initial load duke parents: diff changeset	1420 ParMarkBitMapClosure(bitmap, cm, words), _start_array(start_array)
a61af66fc99e Initial load duke parents: diff changeset	1421 {
a61af66fc99e Initial load duke parents: diff changeset	1422 _destination = destination;
a61af66fc99e Initial load duke parents: diff changeset	1423 }
a61af66fc99e Initial load duke parents: diff changeset	1424
a61af66fc99e Initial load duke parents: diff changeset	1425 inline void MoveAndUpdateClosure::update_state(size_t words)
a61af66fc99e Initial load duke parents: diff changeset	1426 {
a61af66fc99e Initial load duke parents: diff changeset	1427 decrement_words_remaining(words);
a61af66fc99e Initial load duke parents: diff changeset	1428 _source += words;
a61af66fc99e Initial load duke parents: diff changeset	1429 _destination += words;
a61af66fc99e Initial load duke parents: diff changeset	1430 }
a61af66fc99e Initial load duke parents: diff changeset	1431
a61af66fc99e Initial load duke parents: diff changeset	1432 class UpdateOnlyClosure: public ParMarkBitMapClosure {
a61af66fc99e Initial load duke parents: diff changeset	1433 private:
a61af66fc99e Initial load duke parents: diff changeset	1434 const PSParallelCompact::SpaceId _space_id;
a61af66fc99e Initial load duke parents: diff changeset	1435 ObjectStartArray* const _start_array;
a61af66fc99e Initial load duke parents: diff changeset	1436
a61af66fc99e Initial load duke parents: diff changeset	1437 public:
a61af66fc99e Initial load duke parents: diff changeset	1438 UpdateOnlyClosure(ParMarkBitMap* mbm,
a61af66fc99e Initial load duke parents: diff changeset	1439 ParCompactionManager* cm,
a61af66fc99e Initial load duke parents: diff changeset	1440 PSParallelCompact::SpaceId space_id);
a61af66fc99e Initial load duke parents: diff changeset	1441
a61af66fc99e Initial load duke parents: diff changeset	1442 // Update the object.
a61af66fc99e Initial load duke parents: diff changeset	1443 virtual IterationStatus do_addr(HeapWord* addr, size_t words);
a61af66fc99e Initial load duke parents: diff changeset	1444
a61af66fc99e Initial load duke parents: diff changeset	1445 inline void do_addr(HeapWord* addr);
a61af66fc99e Initial load duke parents: diff changeset	1446 };
a61af66fc99e Initial load duke parents: diff changeset	1447
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1448 inline void UpdateOnlyClosure::do_addr(HeapWord* addr)
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1449 {
0 a61af66fc99e Initial load duke parents: diff changeset	1450 _start_array->allocate_block(addr);
a61af66fc99e Initial load duke parents: diff changeset	1451 oop(addr)->update_contents(compaction_manager());
a61af66fc99e Initial load duke parents: diff changeset	1452 }
a61af66fc99e Initial load duke parents: diff changeset	1453
481 7d7a7c599c17 6578152: fill_region_with_object has usability and safety issues jcoomes parents: 376 diff changeset	1454 class FillClosure: public ParMarkBitMapClosure
7d7a7c599c17 6578152: fill_region_with_object has usability and safety issues jcoomes parents: 376 diff changeset	1455 {
7d7a7c599c17 6578152: fill_region_with_object has usability and safety issues jcoomes parents: 376 diff changeset	1456 public:
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1457 FillClosure(ParCompactionManager* cm, PSParallelCompact::SpaceId space_id) :
0 a61af66fc99e Initial load duke parents: diff changeset	1458 ParMarkBitMapClosure(PSParallelCompact::mark_bitmap(), cm),
481 7d7a7c599c17 6578152: fill_region_with_object has usability and safety issues jcoomes parents: 376 diff changeset	1459 _start_array(PSParallelCompact::start_array(space_id))
7d7a7c599c17 6578152: fill_region_with_object has usability and safety issues jcoomes parents: 376 diff changeset	1460 {
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1461 assert(space_id == PSParallelCompact::old_space_id,
0 a61af66fc99e Initial load duke parents: diff changeset	1462 "cannot use FillClosure in the young gen");
a61af66fc99e Initial load duke parents: diff changeset	1463 }
a61af66fc99e Initial load duke parents: diff changeset	1464
a61af66fc99e Initial load duke parents: diff changeset	1465 virtual IterationStatus do_addr(HeapWord* addr, size_t size) {
481 7d7a7c599c17 6578152: fill_region_with_object has usability and safety issues jcoomes parents: 376 diff changeset	1466 CollectedHeap::fill_with_objects(addr, size);
7d7a7c599c17 6578152: fill_region_with_object has usability and safety issues jcoomes parents: 376 diff changeset	1467 HeapWord* const end = addr + size;
7d7a7c599c17 6578152: fill_region_with_object has usability and safety issues jcoomes parents: 376 diff changeset	1468 do {
7d7a7c599c17 6578152: fill_region_with_object has usability and safety issues jcoomes parents: 376 diff changeset	1469 _start_array->allocate_block(addr);
7d7a7c599c17 6578152: fill_region_with_object has usability and safety issues jcoomes parents: 376 diff changeset	1470 addr += oop(addr)->size();
7d7a7c599c17 6578152: fill_region_with_object has usability and safety issues jcoomes parents: 376 diff changeset	1471 } while (addr < end);
0 a61af66fc99e Initial load duke parents: diff changeset	1472 return ParMarkBitMap::incomplete;
a61af66fc99e Initial load duke parents: diff changeset	1473 }
a61af66fc99e Initial load duke parents: diff changeset	1474
a61af66fc99e Initial load duke parents: diff changeset	1475 private:
481 7d7a7c599c17 6578152: fill_region_with_object has usability and safety issues jcoomes parents: 376 diff changeset	1476 ObjectStartArray* const _start_array;
0 a61af66fc99e Initial load duke parents: diff changeset	1477 };
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1638 diff changeset	1478
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1638 diff changeset	1479 #endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSPARALLELCOMPACT_HPP

Mercurial > hg > graal-compiler

annotate src/share/vm/gc_implementation/parallelScavenge/psParallelCompact.hpp @ 6735:aed758eda82a