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

annotate src/share/vm/gc_implementation/parallelScavenge/psParallelCompact.hpp @ 10405:f2110083203d

8005849: JEP 167: Event-Based JVM Tracing Reviewed-by: acorn, coleenp, sla Contributed-by: Karen Kinnear <karen.kinnear@oracle.com>, Bengt Rutisson <bengt.rutisson@oracle.com>, Calvin Cheung <calvin.cheung@oracle.com>, Erik Gahlin <erik.gahlin@oracle.com>, Erik Helin <erik.helin@oracle.com>, Jesper Wilhelmsson <jesper.wilhelmsson@oracle.com>, Keith McGuigan <keith.mcguigan@oracle.com>, Mattias Tobiasson <mattias.tobiasson@oracle.com>, Markus Gronlund <markus.gronlund@oracle.com>, Mikael Auno <mikael.auno@oracle.com>, Nils Eliasson <nils.eliasson@oracle.com>, Nils Loodin <nils.loodin@oracle.com>, Rickard Backman <rickard.backman@oracle.com>, Staffan Larsen <staffan.larsen@oracle.com>, Stefan Karlsson <stefan.karlsson@oracle.com>, Yekaterina Kantserova <yekaterina.kantserova@oracle.com>

author	sla
date	Mon, 10 Jun 2013 11:30:51 +0200
parents	5534bd30c151
children	ad72068ac41e

rev	line source
0 a61af66fc99e Initial load duke parents: diff changeset	1 /*
10329 10f759898d40 7186737: Unable to allocate bit maps or card tables for parallel gc for the requested heap tamao parents: 10327 diff changeset	2 * Copyright (c) 2005, 2013, 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;
10405 f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10369 diff changeset	49 class ParallelOldTracer;
f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10369 diff changeset	50 class STWGCTimer;
0 a61af66fc99e Initial load duke parents: diff changeset	51
482 7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	52 // 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	53 // 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	54 // 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	55 // 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	56 // 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	57 // 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	58 // 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	59 // 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	60 // 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	61 // region, splitting is necessary for predictable behavior.
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	62 //
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	63 // 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	64 // 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	65 // 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	66 // 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	67 // 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	68 // different destination space (distinct from dest_space_1).
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	69 //
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	70 // 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	71 // 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	72 // 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	73 // 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	74 // 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	75 // 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	76 // 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	77 //
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	78 // 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	79 // 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	80 // 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	81 // 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	82 // PSParallelCompact::first_src_addr()).
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 // Notes:
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	85 //
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	86 // 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	87 // object does not need any extra bookkeeping.
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	88 //
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	89 // 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	90 // constant.
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	91 //
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	92 // 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	93 // 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	94 // 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	95 // 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	96 // large object caused the overflow.
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 // Future work:
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	99 //
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	100 // 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	101 // 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	102 // 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	103 // 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	104 // 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	105 // 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	106 // 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	107 // 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	108 // 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	109 // doable, if a bit tricky.
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	110 //
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	111 // 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	112 // 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	113 // destination region.
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 class SplitInfo
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	116 {
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	117 public:
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	118 // 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	119 // 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	120 // never split, so 0 is the 'invalid' value.
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	121 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	122
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	123 // 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	124 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	125
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	126 // 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	127 // region and the destination of the partial object.
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	128 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	129 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	130 HeapWord* destination() const { return _destination; }
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	131
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	132 // 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	133 // (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	134 // remainder of the source region.
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	135 unsigned int destination_count() const { return _destination_count; }
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	136
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	137 // 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	138 // 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	139 // otherwise this is NULL.
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	140 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	141
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	142 // 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	143 // 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	144 // object; otherwise this is NULL.
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	145 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	146
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	147 // 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	148 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	149 HeapWord* destination);
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 void 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 DEBUG_ONLY(void verify_clear();)
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	154
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	155 private:
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	156 size_t _src_region_idx;
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	157 size_t _partial_obj_size;
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	158 HeapWord* _destination;
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	159 unsigned int _destination_count;
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	160 HeapWord* _dest_region_addr;
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	161 HeapWord* _first_src_addr;
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	162 };
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 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	165 {
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	166 return _src_region_idx == region_idx && is_valid();
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	167 }
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	168
0 a61af66fc99e Initial load duke parents: diff changeset	169 class SpaceInfo
a61af66fc99e Initial load duke parents: diff changeset	170 {
a61af66fc99e Initial load duke parents: diff changeset	171 public:
a61af66fc99e Initial load duke parents: diff changeset	172 MutableSpace* space() const { return _space; }
a61af66fc99e Initial load duke parents: diff changeset	173
a61af66fc99e Initial load duke parents: diff changeset	174 // Where the free space will start after the collection. Valid only after the
a61af66fc99e Initial load duke parents: diff changeset	175 // summary phase completes.
a61af66fc99e Initial load duke parents: diff changeset	176 HeapWord* new_top() const { return _new_top; }
a61af66fc99e Initial load duke parents: diff changeset	177
a61af66fc99e Initial load duke parents: diff changeset	178 // Allows new_top to be set.
a61af66fc99e Initial load duke parents: diff changeset	179 HeapWord** new_top_addr() { return &_new_top; }
a61af66fc99e Initial load duke parents: diff changeset	180
a61af66fc99e Initial load duke parents: diff changeset	181 // Where the smallest allowable dense prefix ends (used only for perm gen).
a61af66fc99e Initial load duke parents: diff changeset	182 HeapWord* min_dense_prefix() const { return _min_dense_prefix; }
a61af66fc99e Initial load duke parents: diff changeset	183
a61af66fc99e Initial load duke parents: diff changeset	184 // Where the dense prefix ends, or the compacted region begins.
a61af66fc99e Initial load duke parents: diff changeset	185 HeapWord* dense_prefix() const { return _dense_prefix; }
a61af66fc99e Initial load duke parents: diff changeset	186
a61af66fc99e Initial load duke parents: diff changeset	187 // The start array for the (generation containing the) space, or NULL if there
a61af66fc99e Initial load duke parents: diff changeset	188 // is no start array.
a61af66fc99e Initial load duke parents: diff changeset	189 ObjectStartArray* start_array() const { return _start_array; }
a61af66fc99e Initial load duke parents: diff changeset	190
482 7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	191 SplitInfo& split_info() { return _split_info; }
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	192
0 a61af66fc99e Initial load duke parents: diff changeset	193 void set_space(MutableSpace* s) { _space = s; }
a61af66fc99e Initial load duke parents: diff changeset	194 void set_new_top(HeapWord* addr) { _new_top = addr; }
a61af66fc99e Initial load duke parents: diff changeset	195 void set_min_dense_prefix(HeapWord* addr) { _min_dense_prefix = addr; }
a61af66fc99e Initial load duke parents: diff changeset	196 void set_dense_prefix(HeapWord* addr) { _dense_prefix = addr; }
a61af66fc99e Initial load duke parents: diff changeset	197 void set_start_array(ObjectStartArray* s) { _start_array = s; }
a61af66fc99e Initial load duke parents: diff changeset	198
482 7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	199 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	200
0 a61af66fc99e Initial load duke parents: diff changeset	201 private:
a61af66fc99e Initial load duke parents: diff changeset	202 MutableSpace* _space;
a61af66fc99e Initial load duke parents: diff changeset	203 HeapWord* _new_top;
a61af66fc99e Initial load duke parents: diff changeset	204 HeapWord* _min_dense_prefix;
a61af66fc99e Initial load duke parents: diff changeset	205 HeapWord* _dense_prefix;
a61af66fc99e Initial load duke parents: diff changeset	206 ObjectStartArray* _start_array;
482 7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	207 SplitInfo _split_info;
0 a61af66fc99e Initial load duke parents: diff changeset	208 };
a61af66fc99e Initial load duke parents: diff changeset	209
a61af66fc99e Initial load duke parents: diff changeset	210 class ParallelCompactData
a61af66fc99e Initial load duke parents: diff changeset	211 {
a61af66fc99e Initial load duke parents: diff changeset	212 public:
a61af66fc99e Initial load duke parents: diff changeset	213 // Sizes are in HeapWords, unless indicated otherwise.
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	214 static const size_t Log2RegionSize;
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	215 static const size_t RegionSize;
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	216 static const size_t RegionSizeBytes;
0 a61af66fc99e Initial load duke parents: diff changeset	217
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	218 // 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	219 static const size_t RegionSizeOffsetMask;
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	220 // 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	221 static const size_t RegionAddrOffsetMask;
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	222 // 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	223 static const size_t RegionAddrMask;
0 a61af66fc99e Initial load duke parents: diff changeset	224
10369 5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	225 static const size_t Log2BlockSize;
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	226 static const size_t BlockSize;
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	227 static const size_t BlockSizeBytes;
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	228
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	229 static const size_t BlockSizeOffsetMask;
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	230 static const size_t BlockAddrOffsetMask;
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	231 static const size_t BlockAddrMask;
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	232
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	233 static const size_t BlocksPerRegion;
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	234 static const size_t Log2BlocksPerRegion;
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	235
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	236 class RegionData
0 a61af66fc99e Initial load duke parents: diff changeset	237 {
a61af66fc99e Initial load duke parents: diff changeset	238 public:
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	239 // Destination address of the region.
0 a61af66fc99e Initial load duke parents: diff changeset	240 HeapWord* destination() const { return _destination; }
a61af66fc99e Initial load duke parents: diff changeset	241
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	242 // The first region containing data destined for this region.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	243 size_t source_region() const { return _source_region; }
0 a61af66fc99e Initial load duke parents: diff changeset	244
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	245 // 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	246 // region that could not be updated during the main (parallel) compaction
0 a61af66fc99e Initial load duke parents: diff changeset	247 // 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	248 // extends onto a source region. However, the two uses do not overlap in
0 a61af66fc99e Initial load duke parents: diff changeset	249 // time, so the same field is used to save space.
a61af66fc99e Initial load duke parents: diff changeset	250 HeapWord* deferred_obj_addr() const { return _partial_obj_addr; }
a61af66fc99e Initial load duke parents: diff changeset	251
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	252 // The starting address of the partial object extending onto the region.
0 a61af66fc99e Initial load duke parents: diff changeset	253 HeapWord* partial_obj_addr() const { return _partial_obj_addr; }
a61af66fc99e Initial load duke parents: diff changeset	254
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	255 // Size of the partial object extending onto the region (words).
0 a61af66fc99e Initial load duke parents: diff changeset	256 size_t partial_obj_size() const { return _partial_obj_size; }
a61af66fc99e Initial load duke parents: diff changeset	257
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	258 // 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	259 // 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	260 // 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	261 // onto the next region (if any).
0 a61af66fc99e Initial load duke parents: diff changeset	262 size_t live_obj_size() const { return _dc_and_los & los_mask; }
a61af66fc99e Initial load duke parents: diff changeset	263
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	264 // Total live data that lies within the region (words).
0 a61af66fc99e Initial load duke parents: diff changeset	265 size_t data_size() const { return partial_obj_size() + live_obj_size(); }
a61af66fc99e Initial load duke parents: diff changeset	266
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	267 // 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	268 // this region will be copied. At the end of the summary phase, the valid
0 a61af66fc99e Initial load duke parents: diff changeset	269 // values of destination_count are
a61af66fc99e Initial load duke parents: diff changeset	270 //
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	271 // 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	272 // 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	273 // 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	274 // 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	275 // 2 - data from the region will be copied to 2 other regions.
0 a61af66fc99e Initial load duke parents: diff changeset	276 //
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	277 // During compaction as regions are emptied, the destination_count is
0 a61af66fc99e Initial load duke parents: diff changeset	278 // decremented (atomically) and when it reaches 0, it can be claimed and
a61af66fc99e Initial load duke parents: diff changeset	279 // then filled.
a61af66fc99e Initial load duke parents: diff changeset	280 //
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	281 // A region is claimed for processing by atomically changing the
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	282 // destination_count to the claimed value (dc_claimed). After a region has
0 a61af66fc99e Initial load duke parents: diff changeset	283 // been filled, the destination_count should be set to the completed value
a61af66fc99e Initial load duke parents: diff changeset	284 // (dc_completed).
a61af66fc99e Initial load duke parents: diff changeset	285 inline uint destination_count() const;
a61af66fc99e Initial load duke parents: diff changeset	286 inline uint destination_count_raw() const;
a61af66fc99e Initial load duke parents: diff changeset	287
10369 5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	288 // Whether the block table for this region has been filled.
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	289 inline bool blocks_filled() const;
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	290
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	291 // Number of times the block table was filled.
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	292 DEBUG_ONLY(inline size_t blocks_filled_count() const;)
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	293
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	294 // The location of the java heap data that corresponds to this region.
0 a61af66fc99e Initial load duke parents: diff changeset	295 inline HeapWord* data_location() const;
a61af66fc99e Initial load duke parents: diff changeset	296
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	297 // The highest address referenced by objects in this region.
0 a61af66fc99e Initial load duke parents: diff changeset	298 inline HeapWord* highest_ref() const;
a61af66fc99e Initial load duke parents: diff changeset	299
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	300 // Whether this region is available to be claimed, has been claimed, or has
0 a61af66fc99e Initial load duke parents: diff changeset	301 // been completed.
a61af66fc99e Initial load duke parents: diff changeset	302 //
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	303 // Minor subtlety: claimed() returns true if the region is marked
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	304 // completed(), which is desirable since a region must be claimed before it
0 a61af66fc99e Initial load duke parents: diff changeset	305 // can be completed.
a61af66fc99e Initial load duke parents: diff changeset	306 bool available() const { return _dc_and_los < dc_one; }
a61af66fc99e Initial load duke parents: diff changeset	307 bool claimed() const { return _dc_and_los >= dc_claimed; }
a61af66fc99e Initial load duke parents: diff changeset	308 bool completed() const { return _dc_and_los >= dc_completed; }
a61af66fc99e Initial load duke parents: diff changeset	309
a61af66fc99e Initial load duke parents: diff changeset	310 // These are not atomic.
a61af66fc99e Initial load duke parents: diff changeset	311 void set_destination(HeapWord* addr) { _destination = addr; }
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	312 void set_source_region(size_t region) { _source_region = region; }
0 a61af66fc99e Initial load duke parents: diff changeset	313 void set_deferred_obj_addr(HeapWord* addr) { _partial_obj_addr = addr; }
a61af66fc99e Initial load duke parents: diff changeset	314 void set_partial_obj_addr(HeapWord* addr) { _partial_obj_addr = addr; }
a61af66fc99e Initial load duke parents: diff changeset	315 void set_partial_obj_size(size_t words) {
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	316 _partial_obj_size = (region_sz_t) words;
0 a61af66fc99e Initial load duke parents: diff changeset	317 }
10369 5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	318 inline void set_blocks_filled();
0 a61af66fc99e Initial load duke parents: diff changeset	319
a61af66fc99e Initial load duke parents: diff changeset	320 inline void set_destination_count(uint count);
a61af66fc99e Initial load duke parents: diff changeset	321 inline void set_live_obj_size(size_t words);
a61af66fc99e Initial load duke parents: diff changeset	322 inline void set_data_location(HeapWord* addr);
a61af66fc99e Initial load duke parents: diff changeset	323 inline void set_completed();
a61af66fc99e Initial load duke parents: diff changeset	324 inline bool claim_unsafe();
a61af66fc99e Initial load duke parents: diff changeset	325
a61af66fc99e Initial load duke parents: diff changeset	326 // These are atomic.
a61af66fc99e Initial load duke parents: diff changeset	327 inline void add_live_obj(size_t words);
a61af66fc99e Initial load duke parents: diff changeset	328 inline void set_highest_ref(HeapWord* addr);
a61af66fc99e Initial load duke parents: diff changeset	329 inline void decrement_destination_count();
a61af66fc99e Initial load duke parents: diff changeset	330 inline bool claim();
a61af66fc99e Initial load duke parents: diff changeset	331
a61af66fc99e Initial load duke parents: diff changeset	332 private:
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	333 // The type used to represent object sizes within a region.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	334 typedef uint region_sz_t;
0 a61af66fc99e Initial load duke parents: diff changeset	335
a61af66fc99e Initial load duke parents: diff changeset	336 // Constants for manipulating the _dc_and_los field, which holds both the
a61af66fc99e Initial load duke parents: diff changeset	337 // destination count and live obj size. The live obj size lives at the
a61af66fc99e Initial load duke parents: diff changeset	338 // 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	339 static const region_sz_t dc_shift; // Shift amount.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	340 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	341 static const region_sz_t dc_one; // 1, shifted appropriately.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	342 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	343 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	344 static const region_sz_t los_mask; // Mask for live obj size.
0 a61af66fc99e Initial load duke parents: diff changeset	345
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	346 HeapWord* _destination;
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	347 size_t _source_region;
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	348 HeapWord* _partial_obj_addr;
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	349 region_sz_t _partial_obj_size;
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	350 region_sz_t volatile _dc_and_los;
10369 5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	351 bool _blocks_filled;
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	352
0 a61af66fc99e Initial load duke parents: diff changeset	353 #ifdef ASSERT
10369 5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	354 size_t _blocks_filled_count; // Number of block table fills.
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	355
0 a61af66fc99e Initial load duke parents: diff changeset	356 // These enable optimizations that are only partially implemented. Use
a61af66fc99e Initial load duke parents: diff changeset	357 // debug builds to prevent the code fragments from breaking.
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	358 HeapWord* _data_location;
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	359 HeapWord* _highest_ref;
0 a61af66fc99e Initial load duke parents: diff changeset	360 #endif // #ifdef ASSERT
a61af66fc99e Initial load duke parents: diff changeset	361
a61af66fc99e Initial load duke parents: diff changeset	362 #ifdef ASSERT
a61af66fc99e Initial load duke parents: diff changeset	363 public:
10369 5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	364 uint _pushed; // 0 until region is pushed onto a stack
0 a61af66fc99e Initial load duke parents: diff changeset	365 private:
a61af66fc99e Initial load duke parents: diff changeset	366 #endif
a61af66fc99e Initial load duke parents: diff changeset	367 };
a61af66fc99e Initial load duke parents: diff changeset	368
10369 5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	369 // "Blocks" allow shorter sections of the bitmap to be searched. Each Block
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	370 // holds an offset, which is the amount of live data in the Region to the left
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	371 // of the first live object that starts in the Block.
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	372 class BlockData
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	373 {
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	374 public:
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	375 typedef unsigned short int blk_ofs_t;
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	376
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	377 blk_ofs_t offset() const { return _offset; }
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	378 void set_offset(size_t val) { _offset = (blk_ofs_t)val; }
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	379
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	380 private:
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	381 blk_ofs_t _offset;
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	382 };
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	383
0 a61af66fc99e Initial load duke parents: diff changeset	384 public:
a61af66fc99e Initial load duke parents: diff changeset	385 ParallelCompactData();
a61af66fc99e Initial load duke parents: diff changeset	386 bool initialize(MemRegion covered_region);
a61af66fc99e Initial load duke parents: diff changeset	387
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	388 size_t region_count() const { return _region_count; }
10329 10f759898d40 7186737: Unable to allocate bit maps or card tables for parallel gc for the requested heap tamao parents: 10327 diff changeset	389 size_t reserved_byte_size() const { return _reserved_byte_size; }
0 a61af66fc99e Initial load duke parents: diff changeset	390
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	391 // Convert region indices to/from RegionData pointers.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	392 inline RegionData* region(size_t region_idx) const;
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	393 inline size_t region(const RegionData* const region_ptr) const;
0 a61af66fc99e Initial load duke parents: diff changeset	394
10369 5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	395 size_t block_count() const { return _block_count; }
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	396 inline BlockData* block(size_t block_idx) const;
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	397 inline size_t block(const BlockData* block_ptr) const;
0 a61af66fc99e Initial load duke parents: diff changeset	398
a61af66fc99e Initial load duke parents: diff changeset	399 void add_obj(HeapWord* addr, size_t len);
a61af66fc99e Initial load duke parents: diff changeset	400 void add_obj(oop p, size_t len) { add_obj((HeapWord*)p, len); }
a61af66fc99e Initial load duke parents: diff changeset	401
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	402 // 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	403 // 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	404 // must be region-aligned; end need not be.
0 a61af66fc99e Initial load duke parents: diff changeset	405 void summarize_dense_prefix(HeapWord* beg, HeapWord* end);
a61af66fc99e Initial load duke parents: diff changeset	406
482 7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	407 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	408 HeapWord* destination, HeapWord* target_end,
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	409 HeapWord** target_next);
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	410 bool summarize(SplitInfo& split_info,
0 a61af66fc99e Initial load duke parents: diff changeset	411 HeapWord* source_beg, HeapWord* source_end,
482 7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	412 HeapWord** source_next,
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	413 HeapWord* target_beg, HeapWord* target_end,
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	414 HeapWord** target_next);
0 a61af66fc99e Initial load duke parents: diff changeset	415
a61af66fc99e Initial load duke parents: diff changeset	416 void clear();
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	417 void clear_range(size_t beg_region, size_t end_region);
0 a61af66fc99e Initial load duke parents: diff changeset	418 void clear_range(HeapWord* beg, HeapWord* end) {
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	419 clear_range(addr_to_region_idx(beg), addr_to_region_idx(end));
0 a61af66fc99e Initial load duke parents: diff changeset	420 }
a61af66fc99e Initial load duke parents: diff changeset	421
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	422 // Return the number of words between addr and the start of the region
0 a61af66fc99e Initial load duke parents: diff changeset	423 // containing addr.
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	424 inline size_t region_offset(const HeapWord* addr) const;
0 a61af66fc99e Initial load duke parents: diff changeset	425
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	426 // Convert addresses to/from a region index or region pointer.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	427 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	428 inline RegionData* addr_to_region_ptr(const HeapWord* addr) const;
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	429 inline HeapWord* region_to_addr(size_t region) const;
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	430 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	431 inline HeapWord* region_to_addr(const RegionData* region) const;
0 a61af66fc99e Initial load duke parents: diff changeset	432
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	433 inline HeapWord* region_align_down(HeapWord* addr) const;
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	434 inline HeapWord* region_align_up(HeapWord* addr) const;
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	435 inline bool is_region_aligned(HeapWord* addr) const;
0 a61af66fc99e Initial load duke parents: diff changeset	436
10369 5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	437 // Analogous to region_offset() for blocks.
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	438 size_t block_offset(const HeapWord* addr) const;
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	439 size_t addr_to_block_idx(const HeapWord* addr) const;
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	440 size_t addr_to_block_idx(const oop obj) const {
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	441 return addr_to_block_idx((HeapWord*) obj);
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	442 }
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	443 inline BlockData* addr_to_block_ptr(const HeapWord* addr) const;
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	444 inline HeapWord* block_to_addr(size_t block) const;
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	445 inline size_t region_to_block_idx(size_t region) const;
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	446
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	447 inline HeapWord* block_align_down(HeapWord* addr) const;
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	448 inline HeapWord* block_align_up(HeapWord* addr) const;
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	449 inline bool is_block_aligned(HeapWord* addr) const;
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	450
0 a61af66fc99e Initial load duke parents: diff changeset	451 // 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	452 HeapWord* partial_obj_end(size_t region_idx) const;
0 a61af66fc99e Initial load duke parents: diff changeset	453
10369 5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	454 // Return the location of the object after compaction.
0 a61af66fc99e Initial load duke parents: diff changeset	455 HeapWord* calc_new_pointer(HeapWord* addr);
a61af66fc99e Initial load duke parents: diff changeset	456
a61af66fc99e Initial load duke parents: diff changeset	457 HeapWord* calc_new_pointer(oop p) {
a61af66fc99e Initial load duke parents: diff changeset	458 return calc_new_pointer((HeapWord*) p);
a61af66fc99e Initial load duke parents: diff changeset	459 }
a61af66fc99e Initial load duke parents: diff changeset	460
a61af66fc99e Initial load duke parents: diff changeset	461 #ifdef ASSERT
a61af66fc99e Initial load duke parents: diff changeset	462 void verify_clear(const PSVirtualSpace* vspace);
a61af66fc99e Initial load duke parents: diff changeset	463 void verify_clear();
a61af66fc99e Initial load duke parents: diff changeset	464 #endif // #ifdef ASSERT
a61af66fc99e Initial load duke parents: diff changeset	465
a61af66fc99e Initial load duke parents: diff changeset	466 private:
10369 5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	467 bool initialize_block_data();
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	468 bool initialize_region_data(size_t region_size);
0 a61af66fc99e Initial load duke parents: diff changeset	469 PSVirtualSpace* create_vspace(size_t count, size_t element_size);
a61af66fc99e Initial load duke parents: diff changeset	470
a61af66fc99e Initial load duke parents: diff changeset	471 private:
a61af66fc99e Initial load duke parents: diff changeset	472 HeapWord* _region_start;
a61af66fc99e Initial load duke parents: diff changeset	473 #ifdef ASSERT
a61af66fc99e Initial load duke parents: diff changeset	474 HeapWord* _region_end;
a61af66fc99e Initial load duke parents: diff changeset	475 #endif // #ifdef ASSERT
a61af66fc99e Initial load duke parents: diff changeset	476
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	477 PSVirtualSpace* _region_vspace;
10329 10f759898d40 7186737: Unable to allocate bit maps or card tables for parallel gc for the requested heap tamao parents: 10327 diff changeset	478 size_t _reserved_byte_size;
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	479 RegionData* _region_data;
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	480 size_t _region_count;
10369 5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	481
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	482 PSVirtualSpace* _block_vspace;
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	483 BlockData* _block_data;
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	484 size_t _block_count;
0 a61af66fc99e Initial load duke parents: diff changeset	485 };
a61af66fc99e Initial load duke parents: diff changeset	486
a61af66fc99e Initial load duke parents: diff changeset	487 inline uint
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	488 ParallelCompactData::RegionData::destination_count_raw() const
0 a61af66fc99e Initial load duke parents: diff changeset	489 {
a61af66fc99e Initial load duke parents: diff changeset	490 return _dc_and_los & dc_mask;
a61af66fc99e Initial load duke parents: diff changeset	491 }
a61af66fc99e Initial load duke parents: diff changeset	492
a61af66fc99e Initial load duke parents: diff changeset	493 inline uint
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	494 ParallelCompactData::RegionData::destination_count() const
0 a61af66fc99e Initial load duke parents: diff changeset	495 {
a61af66fc99e Initial load duke parents: diff changeset	496 return destination_count_raw() >> dc_shift;
a61af66fc99e Initial load duke parents: diff changeset	497 }
a61af66fc99e Initial load duke parents: diff changeset	498
10369 5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	499 inline bool
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	500 ParallelCompactData::RegionData::blocks_filled() const
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	501 {
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	502 return _blocks_filled;
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	503 }
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	504
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	505 #ifdef ASSERT
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	506 inline size_t
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	507 ParallelCompactData::RegionData::blocks_filled_count() const
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	508 {
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	509 return _blocks_filled_count;
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	510 }
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	511 #endif // #ifdef ASSERT
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	512
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	513 inline void
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	514 ParallelCompactData::RegionData::set_blocks_filled()
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	515 {
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	516 _blocks_filled = true;
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	517 // Debug builds count the number of times the table was filled.
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	518 DEBUG_ONLY(Atomic::inc_ptr(&_blocks_filled_count));
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	519 }
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	520
0 a61af66fc99e Initial load duke parents: diff changeset	521 inline void
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	522 ParallelCompactData::RegionData::set_destination_count(uint count)
0 a61af66fc99e Initial load duke parents: diff changeset	523 {
a61af66fc99e Initial load duke parents: diff changeset	524 assert(count <= (dc_completed >> dc_shift), "count too large");
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	525 const region_sz_t live_sz = (region_sz_t) live_obj_size();
0 a61af66fc99e Initial load duke parents: diff changeset	526 _dc_and_los = (count << dc_shift) \| live_sz;
a61af66fc99e Initial load duke parents: diff changeset	527 }
a61af66fc99e Initial load duke parents: diff changeset	528
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	529 inline void ParallelCompactData::RegionData::set_live_obj_size(size_t words)
0 a61af66fc99e Initial load duke parents: diff changeset	530 {
a61af66fc99e Initial load duke parents: diff changeset	531 assert(words <= los_mask, "would overflow");
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	532 _dc_and_los = destination_count_raw() \| (region_sz_t)words;
0 a61af66fc99e Initial load duke parents: diff changeset	533 }
a61af66fc99e Initial load duke parents: diff changeset	534
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	535 inline void ParallelCompactData::RegionData::decrement_destination_count()
0 a61af66fc99e Initial load duke parents: diff changeset	536 {
a61af66fc99e Initial load duke parents: diff changeset	537 assert(_dc_and_los < dc_claimed, "already claimed");
a61af66fc99e Initial load duke parents: diff changeset	538 assert(_dc_and_los >= dc_one, "count would go negative");
a61af66fc99e Initial load duke parents: diff changeset	539 Atomic::add((int)dc_mask, (volatile int*)&_dc_and_los);
a61af66fc99e Initial load duke parents: diff changeset	540 }
a61af66fc99e Initial load duke parents: diff changeset	541
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	542 inline HeapWord* ParallelCompactData::RegionData::data_location() const
0 a61af66fc99e Initial load duke parents: diff changeset	543 {
a61af66fc99e Initial load duke parents: diff changeset	544 DEBUG_ONLY(return _data_location;)
a61af66fc99e Initial load duke parents: diff changeset	545 NOT_DEBUG(return NULL;)
a61af66fc99e Initial load duke parents: diff changeset	546 }
a61af66fc99e Initial load duke parents: diff changeset	547
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	548 inline HeapWord* ParallelCompactData::RegionData::highest_ref() const
0 a61af66fc99e Initial load duke parents: diff changeset	549 {
a61af66fc99e Initial load duke parents: diff changeset	550 DEBUG_ONLY(return _highest_ref;)
a61af66fc99e Initial load duke parents: diff changeset	551 NOT_DEBUG(return NULL;)
a61af66fc99e Initial load duke parents: diff changeset	552 }
a61af66fc99e Initial load duke parents: diff changeset	553
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	554 inline void ParallelCompactData::RegionData::set_data_location(HeapWord* addr)
0 a61af66fc99e Initial load duke parents: diff changeset	555 {
a61af66fc99e Initial load duke parents: diff changeset	556 DEBUG_ONLY(_data_location = addr;)
a61af66fc99e Initial load duke parents: diff changeset	557 }
a61af66fc99e Initial load duke parents: diff changeset	558
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	559 inline void ParallelCompactData::RegionData::set_completed()
0 a61af66fc99e Initial load duke parents: diff changeset	560 {
a61af66fc99e Initial load duke parents: diff changeset	561 assert(claimed(), "must be claimed first");
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	562 _dc_and_los = dc_completed \| (region_sz_t) live_obj_size();
0 a61af66fc99e Initial load duke parents: diff changeset	563 }
a61af66fc99e Initial load duke parents: diff changeset	564
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	565 // MT-unsafe claiming of a region. Should only be used during single threaded
0 a61af66fc99e Initial load duke parents: diff changeset	566 // execution.
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	567 inline bool ParallelCompactData::RegionData::claim_unsafe()
0 a61af66fc99e Initial load duke parents: diff changeset	568 {
a61af66fc99e Initial load duke parents: diff changeset	569 if (available()) {
a61af66fc99e Initial load duke parents: diff changeset	570 _dc_and_los \|= dc_claimed;
a61af66fc99e Initial load duke parents: diff changeset	571 return true;
a61af66fc99e Initial load duke parents: diff changeset	572 }
a61af66fc99e Initial load duke parents: diff changeset	573 return false;
a61af66fc99e Initial load duke parents: diff changeset	574 }
a61af66fc99e Initial load duke parents: diff changeset	575
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	576 inline void ParallelCompactData::RegionData::add_live_obj(size_t words)
0 a61af66fc99e Initial load duke parents: diff changeset	577 {
a61af66fc99e Initial load duke parents: diff changeset	578 assert(words <= (size_t)los_mask - live_obj_size(), "overflow");
a61af66fc99e Initial load duke parents: diff changeset	579 Atomic::add((int) words, (volatile int*) &_dc_and_los);
a61af66fc99e Initial load duke parents: diff changeset	580 }
a61af66fc99e Initial load duke parents: diff changeset	581
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	582 inline void ParallelCompactData::RegionData::set_highest_ref(HeapWord* addr)
0 a61af66fc99e Initial load duke parents: diff changeset	583 {
a61af66fc99e Initial load duke parents: diff changeset	584 #ifdef ASSERT
a61af66fc99e Initial load duke parents: diff changeset	585 HeapWord* tmp = _highest_ref;
a61af66fc99e Initial load duke parents: diff changeset	586 while (addr > tmp) {
a61af66fc99e Initial load duke parents: diff changeset	587 tmp = (HeapWord*)Atomic::cmpxchg_ptr(addr, &_highest_ref, tmp);
a61af66fc99e Initial load duke parents: diff changeset	588 }
a61af66fc99e Initial load duke parents: diff changeset	589 #endif // #ifdef ASSERT
a61af66fc99e Initial load duke parents: diff changeset	590 }
a61af66fc99e Initial load duke parents: diff changeset	591
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	592 inline bool ParallelCompactData::RegionData::claim()
0 a61af66fc99e Initial load duke parents: diff changeset	593 {
a61af66fc99e Initial load duke parents: diff changeset	594 const int los = (int) live_obj_size();
a61af66fc99e Initial load duke parents: diff changeset	595 const int old = Atomic::cmpxchg(dc_claimed \| los,
a61af66fc99e Initial load duke parents: diff changeset	596 (volatile int*) &_dc_and_los, los);
a61af66fc99e Initial load duke parents: diff changeset	597 return old == los;
a61af66fc99e Initial load duke parents: diff changeset	598 }
a61af66fc99e Initial load duke parents: diff changeset	599
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	600 inline ParallelCompactData::RegionData*
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	601 ParallelCompactData::region(size_t region_idx) const
0 a61af66fc99e Initial load duke parents: diff changeset	602 {
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	603 assert(region_idx <= region_count(), "bad arg");
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	604 return _region_data + region_idx;
0 a61af66fc99e Initial load duke parents: diff changeset	605 }
a61af66fc99e Initial load duke parents: diff changeset	606
a61af66fc99e Initial load duke parents: diff changeset	607 inline size_t
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	608 ParallelCompactData::region(const RegionData* const region_ptr) const
0 a61af66fc99e Initial load duke parents: diff changeset	609 {
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	610 assert(region_ptr >= _region_data, "bad arg");
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	611 assert(region_ptr <= _region_data + region_count(), "bad arg");
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	612 return pointer_delta(region_ptr, _region_data, sizeof(RegionData));
0 a61af66fc99e Initial load duke parents: diff changeset	613 }
a61af66fc99e Initial load duke parents: diff changeset	614
10369 5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	615 inline ParallelCompactData::BlockData*
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	616 ParallelCompactData::block(size_t n) const {
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	617 assert(n < block_count(), "bad arg");
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	618 return _block_data + n;
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	619 }
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	620
0 a61af66fc99e Initial load duke parents: diff changeset	621 inline size_t
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	622 ParallelCompactData::region_offset(const HeapWord* addr) const
0 a61af66fc99e Initial load duke parents: diff changeset	623 {
a61af66fc99e Initial load duke parents: diff changeset	624 assert(addr >= _region_start, "bad addr");
a61af66fc99e Initial load duke parents: diff changeset	625 assert(addr <= _region_end, "bad addr");
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	626 return (size_t(addr) & RegionAddrOffsetMask) >> LogHeapWordSize;
0 a61af66fc99e Initial load duke parents: diff changeset	627 }
a61af66fc99e Initial load duke parents: diff changeset	628
a61af66fc99e Initial load duke parents: diff changeset	629 inline size_t
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	630 ParallelCompactData::addr_to_region_idx(const HeapWord* addr) const
0 a61af66fc99e Initial load duke parents: diff changeset	631 {
a61af66fc99e Initial load duke parents: diff changeset	632 assert(addr >= _region_start, "bad addr");
a61af66fc99e Initial load duke parents: diff changeset	633 assert(addr <= _region_end, "bad addr");
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	634 return pointer_delta(addr, _region_start) >> Log2RegionSize;
0 a61af66fc99e Initial load duke parents: diff changeset	635 }
a61af66fc99e Initial load duke parents: diff changeset	636
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	637 inline ParallelCompactData::RegionData*
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	638 ParallelCompactData::addr_to_region_ptr(const HeapWord* addr) const
0 a61af66fc99e Initial load duke parents: diff changeset	639 {
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	640 return region(addr_to_region_idx(addr));
0 a61af66fc99e Initial load duke parents: diff changeset	641 }
a61af66fc99e Initial load duke parents: diff changeset	642
a61af66fc99e Initial load duke parents: diff changeset	643 inline HeapWord*
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	644 ParallelCompactData::region_to_addr(size_t region) const
0 a61af66fc99e Initial load duke parents: diff changeset	645 {
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	646 assert(region <= _region_count, "region out of range");
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	647 return _region_start + (region << Log2RegionSize);
0 a61af66fc99e Initial load duke parents: diff changeset	648 }
a61af66fc99e Initial load duke parents: diff changeset	649
a61af66fc99e Initial load duke parents: diff changeset	650 inline HeapWord*
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	651 ParallelCompactData::region_to_addr(const RegionData* region) const
0 a61af66fc99e Initial load duke parents: diff changeset	652 {
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	653 return region_to_addr(pointer_delta(region, _region_data,
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	654 sizeof(RegionData)));
0 a61af66fc99e Initial load duke parents: diff changeset	655 }
a61af66fc99e Initial load duke parents: diff changeset	656
a61af66fc99e Initial load duke parents: diff changeset	657 inline HeapWord*
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	658 ParallelCompactData::region_to_addr(size_t region, size_t offset) const
0 a61af66fc99e Initial load duke parents: diff changeset	659 {
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	660 assert(region <= _region_count, "region out of range");
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	661 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	662 return region_to_addr(region) + offset;
0 a61af66fc99e Initial load duke parents: diff changeset	663 }
a61af66fc99e Initial load duke parents: diff changeset	664
a61af66fc99e Initial load duke parents: diff changeset	665 inline HeapWord*
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	666 ParallelCompactData::region_align_down(HeapWord* addr) const
0 a61af66fc99e Initial load duke parents: diff changeset	667 {
a61af66fc99e Initial load duke parents: diff changeset	668 assert(addr >= _region_start, "bad addr");
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	669 assert(addr < _region_end + RegionSize, "bad addr");
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	670 return (HeapWord*)(size_t(addr) & RegionAddrMask);
0 a61af66fc99e Initial load duke parents: diff changeset	671 }
a61af66fc99e Initial load duke parents: diff changeset	672
a61af66fc99e Initial load duke parents: diff changeset	673 inline HeapWord*
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	674 ParallelCompactData::region_align_up(HeapWord* addr) const
0 a61af66fc99e Initial load duke parents: diff changeset	675 {
a61af66fc99e Initial load duke parents: diff changeset	676 assert(addr >= _region_start, "bad addr");
a61af66fc99e Initial load duke parents: diff changeset	677 assert(addr <= _region_end, "bad addr");
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	678 return region_align_down(addr + RegionSizeOffsetMask);
0 a61af66fc99e Initial load duke parents: diff changeset	679 }
a61af66fc99e Initial load duke parents: diff changeset	680
a61af66fc99e Initial load duke parents: diff changeset	681 inline bool
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	682 ParallelCompactData::is_region_aligned(HeapWord* addr) const
0 a61af66fc99e Initial load duke parents: diff changeset	683 {
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	684 return region_offset(addr) == 0;
0 a61af66fc99e Initial load duke parents: diff changeset	685 }
a61af66fc99e Initial load duke parents: diff changeset	686
10369 5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	687 inline size_t
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	688 ParallelCompactData::block_offset(const HeapWord* addr) const
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	689 {
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	690 assert(addr >= _region_start, "bad addr");
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	691 assert(addr <= _region_end, "bad addr");
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	692 return (size_t(addr) & BlockAddrOffsetMask) >> LogHeapWordSize;
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	693 }
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	694
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	695 inline size_t
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	696 ParallelCompactData::addr_to_block_idx(const HeapWord* addr) const
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	697 {
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	698 assert(addr >= _region_start, "bad addr");
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	699 assert(addr <= _region_end, "bad addr");
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	700 return pointer_delta(addr, _region_start) >> Log2BlockSize;
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	701 }
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	702
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	703 inline ParallelCompactData::BlockData*
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	704 ParallelCompactData::addr_to_block_ptr(const HeapWord* addr) const
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	705 {
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	706 return block(addr_to_block_idx(addr));
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	707 }
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	708
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	709 inline HeapWord*
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	710 ParallelCompactData::block_to_addr(size_t block) const
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	711 {
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	712 assert(block < _block_count, "block out of range");
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	713 return _region_start + (block << Log2BlockSize);
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	714 }
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	715
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	716 inline size_t
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	717 ParallelCompactData::region_to_block_idx(size_t region) const
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	718 {
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	719 return region << Log2BlocksPerRegion;
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	720 }
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	721
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	722 inline HeapWord*
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	723 ParallelCompactData::block_align_down(HeapWord* addr) const
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	724 {
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	725 assert(addr >= _region_start, "bad addr");
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	726 assert(addr < _region_end + RegionSize, "bad addr");
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	727 return (HeapWord*)(size_t(addr) & BlockAddrMask);
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	728 }
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	729
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	730 inline HeapWord*
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	731 ParallelCompactData::block_align_up(HeapWord* addr) const
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	732 {
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	733 assert(addr >= _region_start, "bad addr");
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	734 assert(addr <= _region_end, "bad addr");
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	735 return block_align_down(addr + BlockSizeOffsetMask);
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	736 }
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	737
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	738 inline bool
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	739 ParallelCompactData::is_block_aligned(HeapWord* addr) const
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	740 {
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	741 return block_offset(addr) == 0;
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	742 }
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	743
0 a61af66fc99e Initial load duke parents: diff changeset	744 // Abstract closure for use with ParMarkBitMap::iterate(), which will invoke the
a61af66fc99e Initial load duke parents: diff changeset	745 // do_addr() method.
a61af66fc99e Initial load duke parents: diff changeset	746 //
a61af66fc99e Initial load duke parents: diff changeset	747 // The closure is initialized with the number of heap words to process
a61af66fc99e Initial load duke parents: diff changeset	748 // (words_remaining()), and becomes 'full' when it reaches 0. The do_addr()
a61af66fc99e Initial load duke parents: diff changeset	749 // methods in subclasses should update the total as words are processed. Since
a61af66fc99e Initial load duke parents: diff changeset	750 // only one subclass actually uses this mechanism to terminate iteration, the
a61af66fc99e Initial load duke parents: diff changeset	751 // default initial value is > 0. The implementation is here and not in the
a61af66fc99e Initial load duke parents: diff changeset	752 // single subclass that uses it to avoid making is_full() virtual, and thus
a61af66fc99e Initial load duke parents: diff changeset	753 // adding a virtual call per live object.
a61af66fc99e Initial load duke parents: diff changeset	754
a61af66fc99e Initial load duke parents: diff changeset	755 class ParMarkBitMapClosure: public StackObj {
a61af66fc99e Initial load duke parents: diff changeset	756 public:
a61af66fc99e Initial load duke parents: diff changeset	757 typedef ParMarkBitMap::idx_t idx_t;
a61af66fc99e Initial load duke parents: diff changeset	758 typedef ParMarkBitMap::IterationStatus IterationStatus;
a61af66fc99e Initial load duke parents: diff changeset	759
a61af66fc99e Initial load duke parents: diff changeset	760 public:
a61af66fc99e Initial load duke parents: diff changeset	761 inline ParMarkBitMapClosure(ParMarkBitMap* mbm, ParCompactionManager* cm,
a61af66fc99e Initial load duke parents: diff changeset	762 size_t words = max_uintx);
a61af66fc99e Initial load duke parents: diff changeset	763
a61af66fc99e Initial load duke parents: diff changeset	764 inline ParCompactionManager* compaction_manager() const;
a61af66fc99e Initial load duke parents: diff changeset	765 inline ParMarkBitMap* bitmap() const;
a61af66fc99e Initial load duke parents: diff changeset	766 inline size_t words_remaining() const;
a61af66fc99e Initial load duke parents: diff changeset	767 inline bool is_full() const;
a61af66fc99e Initial load duke parents: diff changeset	768 inline HeapWord* source() const;
a61af66fc99e Initial load duke parents: diff changeset	769
a61af66fc99e Initial load duke parents: diff changeset	770 inline void set_source(HeapWord* addr);
a61af66fc99e Initial load duke parents: diff changeset	771
a61af66fc99e Initial load duke parents: diff changeset	772 virtual IterationStatus do_addr(HeapWord* addr, size_t words) = 0;
a61af66fc99e Initial load duke parents: diff changeset	773
a61af66fc99e Initial load duke parents: diff changeset	774 protected:
a61af66fc99e Initial load duke parents: diff changeset	775 inline void decrement_words_remaining(size_t words);
a61af66fc99e Initial load duke parents: diff changeset	776
a61af66fc99e Initial load duke parents: diff changeset	777 private:
a61af66fc99e Initial load duke parents: diff changeset	778 ParMarkBitMap* const _bitmap;
a61af66fc99e Initial load duke parents: diff changeset	779 ParCompactionManager* const _compaction_manager;
a61af66fc99e Initial load duke parents: diff changeset	780 DEBUG_ONLY(const size_t _initial_words_remaining;) // Useful in debugger.
a61af66fc99e Initial load duke parents: diff changeset	781 size_t _words_remaining; // Words left to copy.
a61af66fc99e Initial load duke parents: diff changeset	782
a61af66fc99e Initial load duke parents: diff changeset	783 protected:
a61af66fc99e Initial load duke parents: diff changeset	784 HeapWord* _source; // Next addr that would be read.
a61af66fc99e Initial load duke parents: diff changeset	785 };
a61af66fc99e Initial load duke parents: diff changeset	786
a61af66fc99e Initial load duke parents: diff changeset	787 inline
a61af66fc99e Initial load duke parents: diff changeset	788 ParMarkBitMapClosure::ParMarkBitMapClosure(ParMarkBitMap* bitmap,
a61af66fc99e Initial load duke parents: diff changeset	789 ParCompactionManager* cm,
a61af66fc99e Initial load duke parents: diff changeset	790 size_t words):
a61af66fc99e Initial load duke parents: diff changeset	791 _bitmap(bitmap), _compaction_manager(cm)
a61af66fc99e Initial load duke parents: diff changeset	792 #ifdef ASSERT
a61af66fc99e Initial load duke parents: diff changeset	793 , _initial_words_remaining(words)
a61af66fc99e Initial load duke parents: diff changeset	794 #endif
a61af66fc99e Initial load duke parents: diff changeset	795 {
a61af66fc99e Initial load duke parents: diff changeset	796 _words_remaining = words;
a61af66fc99e Initial load duke parents: diff changeset	797 _source = NULL;
a61af66fc99e Initial load duke parents: diff changeset	798 }
a61af66fc99e Initial load duke parents: diff changeset	799
a61af66fc99e Initial load duke parents: diff changeset	800 inline ParCompactionManager* ParMarkBitMapClosure::compaction_manager() const {
a61af66fc99e Initial load duke parents: diff changeset	801 return _compaction_manager;
a61af66fc99e Initial load duke parents: diff changeset	802 }
a61af66fc99e Initial load duke parents: diff changeset	803
a61af66fc99e Initial load duke parents: diff changeset	804 inline ParMarkBitMap* ParMarkBitMapClosure::bitmap() const {
a61af66fc99e Initial load duke parents: diff changeset	805 return _bitmap;
a61af66fc99e Initial load duke parents: diff changeset	806 }
a61af66fc99e Initial load duke parents: diff changeset	807
a61af66fc99e Initial load duke parents: diff changeset	808 inline size_t ParMarkBitMapClosure::words_remaining() const {
a61af66fc99e Initial load duke parents: diff changeset	809 return _words_remaining;
a61af66fc99e Initial load duke parents: diff changeset	810 }
a61af66fc99e Initial load duke parents: diff changeset	811
a61af66fc99e Initial load duke parents: diff changeset	812 inline bool ParMarkBitMapClosure::is_full() const {
a61af66fc99e Initial load duke parents: diff changeset	813 return words_remaining() == 0;
a61af66fc99e Initial load duke parents: diff changeset	814 }
a61af66fc99e Initial load duke parents: diff changeset	815
a61af66fc99e Initial load duke parents: diff changeset	816 inline HeapWord* ParMarkBitMapClosure::source() const {
a61af66fc99e Initial load duke parents: diff changeset	817 return _source;
a61af66fc99e Initial load duke parents: diff changeset	818 }
a61af66fc99e Initial load duke parents: diff changeset	819
a61af66fc99e Initial load duke parents: diff changeset	820 inline void ParMarkBitMapClosure::set_source(HeapWord* addr) {
a61af66fc99e Initial load duke parents: diff changeset	821 _source = addr;
a61af66fc99e Initial load duke parents: diff changeset	822 }
a61af66fc99e Initial load duke parents: diff changeset	823
a61af66fc99e Initial load duke parents: diff changeset	824 inline void ParMarkBitMapClosure::decrement_words_remaining(size_t words) {
a61af66fc99e Initial load duke parents: diff changeset	825 assert(_words_remaining >= words, "processed too many words");
a61af66fc99e Initial load duke parents: diff changeset	826 _words_remaining -= words;
a61af66fc99e Initial load duke parents: diff changeset	827 }
a61af66fc99e Initial load duke parents: diff changeset	828
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	829 // 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	830 // 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	831 // 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	832 // 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	833 // 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	834 // 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	835 // 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	836 // 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	837 // address) sliding compaction.
263 12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	838 //
12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	839 // 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	840 //
12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	841 // - marking phase
12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	842 // - summary phase
12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	843 // - compacting phase
12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	844 // - clean up phase
12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	845 //
12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	846 // 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	847 // - mark all the live objects
12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	848 // - 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	849 // - 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	850 // - 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	851 //
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	852 // 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	853 // 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	854 // 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	855 // PSParallelCompact::summary_phase(). The move and update phase is implemented
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	856 // in PSParallelCompact::compact().
263 12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	857 //
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	858 // 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	859 // 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	860 // 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	861 // 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	862 //
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	863 // region -----+---------------------+----------
263 12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	864 // 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	865 //
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	866 // 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	867 // 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	868 // 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	869 // 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	870 // 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	871 // 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	872 // 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	873 // 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	874 // 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	875 // covered by a region.
263 12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	876 //
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	877 // 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	878 // 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	879 // 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	880 // 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	881 //
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	882 // - 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	883 // entering the region.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	884 // - the location of the first live data on the region
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	885 // - 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	886 //
12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	887 // See ParallelCompactData for precise details. The summary phase also
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	888 // 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	889 // 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	890 // 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	891 // summarize_dense_prefix().
263 12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	892 //
12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	893 // 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	894 //
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	895 // 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	896 // references in the object.
263 12eea04c8b06 6672698: mangle_unused_area() should not remangle the entire heap at each collection. jmasa parents: 113 diff changeset	897 //
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	898 // 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	899 // 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	900 // 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	901 // 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	902 // 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	903 // clean up phase. See the method PSParallelCompact::update_deferred_objects().
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	904 // 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	905 //
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	906 // 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	907 // 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	908 // 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	909 // 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	910 // 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	911 // 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	912 // 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	913 // 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	914 // and removed from the ready list.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	915
0 a61af66fc99e Initial load duke parents: diff changeset	916 class PSParallelCompact : AllStatic {
a61af66fc99e Initial load duke parents: diff changeset	917 public:
a61af66fc99e Initial load duke parents: diff changeset	918 // Convenient access to type names.
a61af66fc99e Initial load duke parents: diff changeset	919 typedef ParMarkBitMap::idx_t idx_t;
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	920 typedef ParallelCompactData::RegionData RegionData;
10369 5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	921 typedef ParallelCompactData::BlockData BlockData;
0 a61af66fc99e Initial load duke parents: diff changeset	922
a61af66fc99e Initial load duke parents: diff changeset	923 typedef enum {
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	924 old_space_id, eden_space_id,
0 a61af66fc99e Initial load duke parents: diff changeset	925 from_space_id, to_space_id, last_space_id
a61af66fc99e Initial load duke parents: diff changeset	926 } SpaceId;
a61af66fc99e Initial load duke parents: diff changeset	927
a61af66fc99e Initial load duke parents: diff changeset	928 public:
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	929 // Inline closure decls
0 a61af66fc99e Initial load duke parents: diff changeset	930 //
a61af66fc99e Initial load duke parents: diff changeset	931 class IsAliveClosure: public BoolObjectClosure {
a61af66fc99e Initial load duke parents: diff changeset	932 public:
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	933 virtual bool do_object_b(oop p);
0 a61af66fc99e Initial load duke parents: diff changeset	934 };
a61af66fc99e Initial load duke parents: diff changeset	935
a61af66fc99e Initial load duke parents: diff changeset	936 class KeepAliveClosure: public OopClosure {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	937 private:
0 a61af66fc99e Initial load duke parents: diff changeset	938 ParCompactionManager* _compaction_manager;
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	939 protected:
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	940 template <class T> inline void do_oop_work(T* p);
0 a61af66fc99e Initial load duke parents: diff changeset	941 public:
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	942 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	943 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	944 virtual void do_oop(narrowOop* p);
0 a61af66fc99e Initial load duke parents: diff changeset	945 };
a61af66fc99e Initial load duke parents: diff changeset	946
a61af66fc99e Initial load duke parents: diff changeset	947 class FollowStackClosure: public VoidClosure {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	948 private:
0 a61af66fc99e Initial load duke parents: diff changeset	949 ParCompactionManager* _compaction_manager;
a61af66fc99e Initial load duke parents: diff changeset	950 public:
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	951 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	952 virtual void do_void();
0 a61af66fc99e Initial load duke parents: diff changeset	953 };
a61af66fc99e Initial load duke parents: diff changeset	954
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	955 class AdjustPointerClosure: public OopClosure {
0 a61af66fc99e Initial load duke parents: diff changeset	956 public:
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	957 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	958 virtual void do_oop(narrowOop* p);
989 148e5441d916 6863023: need non-perm oops in code cache for JSR 292 jrose parents: 579 diff changeset	959 // 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	960 virtual void do_code_blob(CodeBlob* cb) const { }
0 a61af66fc99e Initial load duke parents: diff changeset	961 };
a61af66fc99e Initial load duke parents: diff changeset	962
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	963 class AdjustKlassClosure : public KlassClosure {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	964 public:
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	965 void do_klass(Klass* klass);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	966 };
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	967
0 a61af66fc99e Initial load duke parents: diff changeset	968 friend class KeepAliveClosure;
a61af66fc99e Initial load duke parents: diff changeset	969 friend class FollowStackClosure;
a61af66fc99e Initial load duke parents: diff changeset	970 friend class AdjustPointerClosure;
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	971 friend class AdjustKlassClosure;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	972 friend class FollowKlassClosure;
6735 aed758eda82a 7195833: NPG: Rename instanceClassLoaderKlass, instanceRefKlass and instanceMirrorKlass coleenp parents: 6725 diff changeset	973 friend class InstanceClassLoaderKlass;
0 a61af66fc99e Initial load duke parents: diff changeset	974 friend class RefProcTaskProxy;
a61af66fc99e Initial load duke parents: diff changeset	975
a61af66fc99e Initial load duke parents: diff changeset	976 private:
10405 f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10369 diff changeset	977 static STWGCTimer _gc_timer;
f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10369 diff changeset	978 static ParallelOldTracer _gc_tracer;
0 a61af66fc99e Initial load duke parents: diff changeset	979 static elapsedTimer _accumulated_time;
a61af66fc99e Initial load duke parents: diff changeset	980 static unsigned int _total_invocations;
a61af66fc99e Initial load duke parents: diff changeset	981 static unsigned int _maximum_compaction_gc_num;
a61af66fc99e Initial load duke parents: diff changeset	982 static jlong _time_of_last_gc; // ms
a61af66fc99e Initial load duke parents: diff changeset	983 static CollectorCounters* _counters;
a61af66fc99e Initial load duke parents: diff changeset	984 static ParMarkBitMap _mark_bitmap;
a61af66fc99e Initial load duke parents: diff changeset	985 static ParallelCompactData _summary_data;
a61af66fc99e Initial load duke parents: diff changeset	986 static IsAliveClosure _is_alive_closure;
a61af66fc99e Initial load duke parents: diff changeset	987 static SpaceInfo _space_info[last_space_id];
a61af66fc99e Initial load duke parents: diff changeset	988 static bool _print_phases;
a61af66fc99e Initial load duke parents: diff changeset	989 static AdjustPointerClosure _adjust_pointer_closure;
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	990 static AdjustKlassClosure _adjust_klass_closure;
0 a61af66fc99e Initial load duke parents: diff changeset	991
a61af66fc99e Initial load duke parents: diff changeset	992 // Reference processing (used in ...follow_contents)
a61af66fc99e Initial load duke parents: diff changeset	993 static ReferenceProcessor* _ref_processor;
a61af66fc99e Initial load duke parents: diff changeset	994
a61af66fc99e Initial load duke parents: diff changeset	995 // Updated location of intArrayKlassObj.
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	996 static Klass* _updated_int_array_klass_obj;
0 a61af66fc99e Initial load duke parents: diff changeset	997
a61af66fc99e Initial load duke parents: diff changeset	998 // Values computed at initialization and used by dead_wood_limiter().
a61af66fc99e Initial load duke parents: diff changeset	999 static double _dwl_mean;
a61af66fc99e Initial load duke parents: diff changeset	1000 static double _dwl_std_dev;
a61af66fc99e Initial load duke parents: diff changeset	1001 static double _dwl_first_term;
a61af66fc99e Initial load duke parents: diff changeset	1002 static double _dwl_adjustment;
a61af66fc99e Initial load duke parents: diff changeset	1003 #ifdef ASSERT
a61af66fc99e Initial load duke parents: diff changeset	1004 static bool _dwl_initialized;
a61af66fc99e Initial load duke parents: diff changeset	1005 #endif // #ifdef ASSERT
a61af66fc99e Initial load duke parents: diff changeset	1006
a61af66fc99e Initial load duke parents: diff changeset	1007 private:
a61af66fc99e Initial load duke parents: diff changeset	1008
a61af66fc99e Initial load duke parents: diff changeset	1009 static void initialize_space_info();
a61af66fc99e Initial load duke parents: diff changeset	1010
a61af66fc99e Initial load duke parents: diff changeset	1011 // Return true if details about individual phases should be printed.
a61af66fc99e Initial load duke parents: diff changeset	1012 static inline bool print_phases();
a61af66fc99e Initial load duke parents: diff changeset	1013
a61af66fc99e Initial load duke parents: diff changeset	1014 // Clear the marking bitmap and summary data that cover the specified space.
a61af66fc99e Initial load duke parents: diff changeset	1015 static void clear_data_covering_space(SpaceId id);
a61af66fc99e Initial load duke parents: diff changeset	1016
a61af66fc99e Initial load duke parents: diff changeset	1017 static void pre_compact(PreGCValues* pre_gc_values);
a61af66fc99e Initial load duke parents: diff changeset	1018 static void post_compact();
a61af66fc99e Initial load duke parents: diff changeset	1019
a61af66fc99e Initial load duke parents: diff changeset	1020 // Mark live objects
a61af66fc99e Initial load duke parents: diff changeset	1021 static void marking_phase(ParCompactionManager* cm,
10405 f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10369 diff changeset	1022 bool maximum_heap_compaction,
f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10369 diff changeset	1023 ParallelOldTracer *gc_tracer);
0 a61af66fc99e Initial load duke parents: diff changeset	1024
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1025 template <class T>
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1026 static inline void follow_root(ParCompactionManager* cm, T* p);
0 a61af66fc99e Initial load duke parents: diff changeset	1027
a61af66fc99e Initial load duke parents: diff changeset	1028 // Compute the dense prefix for the designated space. This is an experimental
a61af66fc99e Initial load duke parents: diff changeset	1029 // implementation currently not used in production.
a61af66fc99e Initial load duke parents: diff changeset	1030 static HeapWord* compute_dense_prefix_via_density(const SpaceId id,
a61af66fc99e Initial load duke parents: diff changeset	1031 bool maximum_compaction);
a61af66fc99e Initial load duke parents: diff changeset	1032
a61af66fc99e Initial load duke parents: diff changeset	1033 // Methods used to compute the dense prefix.
a61af66fc99e Initial load duke parents: diff changeset	1034
a61af66fc99e Initial load duke parents: diff changeset	1035 // Compute the value of the normal distribution at x = density. The mean and
a61af66fc99e Initial load duke parents: diff changeset	1036 // standard deviation are values saved by initialize_dead_wood_limiter().
a61af66fc99e Initial load duke parents: diff changeset	1037 static inline double normal_distribution(double density);
a61af66fc99e Initial load duke parents: diff changeset	1038
a61af66fc99e Initial load duke parents: diff changeset	1039 // Initialize the static vars used by dead_wood_limiter().
a61af66fc99e Initial load duke parents: diff changeset	1040 static void initialize_dead_wood_limiter();
a61af66fc99e Initial load duke parents: diff changeset	1041
a61af66fc99e Initial load duke parents: diff changeset	1042 // Return the percentage of space that can be treated as "dead wood" (i.e.,
a61af66fc99e Initial load duke parents: diff changeset	1043 // not reclaimed).
a61af66fc99e Initial load duke parents: diff changeset	1044 static double dead_wood_limiter(double density, size_t min_percent);
a61af66fc99e Initial load duke parents: diff changeset	1045
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1046 // Find the first (left-most) region in the range [beg, end) that has at least
0 a61af66fc99e Initial load duke parents: diff changeset	1047 // 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	1048 // region in the space that is not completely live.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1049 static RegionData* dead_wood_limit_region(const RegionData* beg,
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1050 const RegionData* end,
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1051 size_t dead_words);
0 a61af66fc99e Initial load duke parents: diff changeset	1052
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1053 // Return a pointer to the first region in the range [beg, end) that is not
0 a61af66fc99e Initial load duke parents: diff changeset	1054 // completely full.
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1055 static RegionData* first_dead_space_region(const RegionData* beg,
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1056 const RegionData* end);
0 a61af66fc99e Initial load duke parents: diff changeset	1057
a61af66fc99e Initial load duke parents: diff changeset	1058 // Return a value indicating the benefit or 'yield' if the compacted region
a61af66fc99e Initial load duke parents: diff changeset	1059 // 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	1060 // candidate region. Higher values are better.
0 a61af66fc99e Initial load duke parents: diff changeset	1061 //
a61af66fc99e Initial load duke parents: diff changeset	1062 // The value is based on the amount of space reclaimed vs. the costs of (a)
a61af66fc99e Initial load duke parents: diff changeset	1063 // updating references in the dense prefix plus (b) copying objects and
a61af66fc99e Initial load duke parents: diff changeset	1064 // updating references in the compacted region.
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1065 static inline double reclaimed_ratio(const RegionData* const candidate,
0 a61af66fc99e Initial load duke parents: diff changeset	1066 HeapWord* const bottom,
a61af66fc99e Initial load duke parents: diff changeset	1067 HeapWord* const top,
a61af66fc99e Initial load duke parents: diff changeset	1068 HeapWord* const new_top);
a61af66fc99e Initial load duke parents: diff changeset	1069
a61af66fc99e Initial load duke parents: diff changeset	1070 // Compute the dense prefix for the designated space.
a61af66fc99e Initial load duke parents: diff changeset	1071 static HeapWord* compute_dense_prefix(const SpaceId id,
a61af66fc99e Initial load duke parents: diff changeset	1072 bool maximum_compaction);
a61af66fc99e Initial load duke parents: diff changeset	1073
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1074 // 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	1075 // 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	1076 static inline bool dead_space_crosses_boundary(const RegionData* region,
0 a61af66fc99e Initial load duke parents: diff changeset	1077 idx_t bit);
a61af66fc99e Initial load duke parents: diff changeset	1078
a61af66fc99e Initial load duke parents: diff changeset	1079 // Summary phase utility routine to fill dead space (if any) at the dense
a61af66fc99e Initial load duke parents: diff changeset	1080 // prefix boundary. Should only be called if the the dense prefix is
a61af66fc99e Initial load duke parents: diff changeset	1081 // non-empty.
a61af66fc99e Initial load duke parents: diff changeset	1082 static void fill_dense_prefix_end(SpaceId id);
a61af66fc99e Initial load duke parents: diff changeset	1083
482 7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	1084 // 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	1085 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	1086
483 0f773163217d 6765954: par compact - stress mode for splitting young gen spaces jcoomes parents: 482 diff changeset	1087 #ifndef PRODUCT
0f773163217d 6765954: par compact - stress mode for splitting young gen spaces jcoomes parents: 482 diff changeset	1088 // 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	1089
0f773163217d 6765954: par compact - stress mode for splitting young gen spaces jcoomes parents: 482 diff changeset	1090 // 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	1091 // for the old and permanent generations.
0f773163217d 6765954: par compact - stress mode for splitting young gen spaces jcoomes parents: 482 diff changeset	1092 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	1093 size_t words);
0f773163217d 6765954: par compact - stress mode for splitting young gen spaces jcoomes parents: 482 diff changeset	1094 // Include the new objects in the summary data.
0f773163217d 6765954: par compact - stress mode for splitting young gen spaces jcoomes parents: 482 diff changeset	1095 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	1096
496 b27c885f75f9 6786188: par compact - "SplitALot" stress mode should fill to_space jcoomes parents: 495 diff changeset	1097 // 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	1098 // are non-empty.
b27c885f75f9 6786188: par compact - "SplitALot" stress mode should fill to_space jcoomes parents: 495 diff changeset	1099 static void provoke_split_fill_survivor(SpaceId id);
b27c885f75f9 6786188: par compact - "SplitALot" stress mode should fill to_space jcoomes parents: 495 diff changeset	1100
483 0f773163217d 6765954: par compact - stress mode for splitting young gen spaces jcoomes parents: 482 diff changeset	1101 // 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	1102 static void provoke_split(bool & maximum_compaction);
0f773163217d 6765954: par compact - stress mode for splitting young gen spaces jcoomes parents: 482 diff changeset	1103 #endif
0f773163217d 6765954: par compact - stress mode for splitting young gen spaces jcoomes parents: 482 diff changeset	1104
0 a61af66fc99e Initial load duke parents: diff changeset	1105 static void summarize_spaces_quick();
a61af66fc99e Initial load duke parents: diff changeset	1106 static void summarize_space(SpaceId id, bool maximum_compaction);
a61af66fc99e Initial load duke parents: diff changeset	1107 static void summary_phase(ParCompactionManager* cm, bool maximum_compaction);
a61af66fc99e Initial load duke parents: diff changeset	1108
a61af66fc99e Initial load duke parents: diff changeset	1109 // Adjust addresses in roots. Does not adjust addresses in heap.
a61af66fc99e Initial load duke parents: diff changeset	1110 static void adjust_roots();
a61af66fc99e Initial load duke parents: diff changeset	1111
10369 5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	1112 DEBUG_ONLY(static void write_block_fill_histogram(outputStream* const out);)
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	1113
0 a61af66fc99e Initial load duke parents: diff changeset	1114 // Move objects to new locations.
a61af66fc99e Initial load duke parents: diff changeset	1115 static void compact_perm(ParCompactionManager* cm);
a61af66fc99e Initial load duke parents: diff changeset	1116 static void compact();
a61af66fc99e Initial load duke parents: diff changeset	1117
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1118 // 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	1119 static void enqueue_region_draining_tasks(GCTaskQueue* q,
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1120 uint parallel_gc_threads);
0 a61af66fc99e Initial load duke parents: diff changeset	1121
a61af66fc99e Initial load duke parents: diff changeset	1122 // Add dense prefix update tasks to the task queue.
a61af66fc99e Initial load duke parents: diff changeset	1123 static void enqueue_dense_prefix_tasks(GCTaskQueue* q,
a61af66fc99e Initial load duke parents: diff changeset	1124 uint parallel_gc_threads);
a61af66fc99e Initial load duke parents: diff changeset	1125
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1126 // Add region stealing tasks to the task queue.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1127 static void enqueue_region_stealing_tasks(
0 a61af66fc99e Initial load duke parents: diff changeset	1128 GCTaskQueue* q,
a61af66fc99e Initial load duke parents: diff changeset	1129 ParallelTaskTerminator* terminator_ptr,
a61af66fc99e Initial load duke parents: diff changeset	1130 uint parallel_gc_threads);
a61af66fc99e Initial load duke parents: diff changeset	1131
a61af66fc99e Initial load duke parents: diff changeset	1132 // If objects are left in eden after a collection, try to move the boundary
a61af66fc99e Initial load duke parents: diff changeset	1133 // and absorb them into the old gen. Returns true if eden was emptied.
a61af66fc99e Initial load duke parents: diff changeset	1134 static bool absorb_live_data_from_eden(PSAdaptiveSizePolicy* size_policy,
a61af66fc99e Initial load duke parents: diff changeset	1135 PSYoungGen* young_gen,
a61af66fc99e Initial load duke parents: diff changeset	1136 PSOldGen* old_gen);
a61af66fc99e Initial load duke parents: diff changeset	1137
a61af66fc99e Initial load duke parents: diff changeset	1138 // Reset time since last full gc
a61af66fc99e Initial load duke parents: diff changeset	1139 static void reset_millis_since_last_gc();
a61af66fc99e Initial load duke parents: diff changeset	1140
a61af66fc99e Initial load duke parents: diff changeset	1141 public:
a61af66fc99e Initial load duke parents: diff changeset	1142 class MarkAndPushClosure: public OopClosure {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1143 private:
0 a61af66fc99e Initial load duke parents: diff changeset	1144 ParCompactionManager* _compaction_manager;
a61af66fc99e Initial load duke parents: diff changeset	1145 public:
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1146 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	1147 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	1148 virtual void do_oop(narrowOop* p);
0 a61af66fc99e Initial load duke parents: diff changeset	1149 };
a61af66fc99e Initial load duke parents: diff changeset	1150
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1151 // 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	1152 // 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	1153 class FollowKlassClosure : public KlassClosure {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1154 private:
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1155 MarkAndPushClosure* _mark_and_push_closure;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1156 public:
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1157 FollowKlassClosure(MarkAndPushClosure* mark_and_push_closure) :
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1158 _mark_and_push_closure(mark_and_push_closure) { }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1159 void do_klass(Klass* klass);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1160 };
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1161
0 a61af66fc99e Initial load duke parents: diff changeset	1162 PSParallelCompact();
a61af66fc99e Initial load duke parents: diff changeset	1163
a61af66fc99e Initial load duke parents: diff changeset	1164 // Convenient accessor for Universe::heap().
a61af66fc99e Initial load duke parents: diff changeset	1165 static ParallelScavengeHeap* gc_heap() {
a61af66fc99e Initial load duke parents: diff changeset	1166 return (ParallelScavengeHeap*)Universe::heap();
a61af66fc99e Initial load duke parents: diff changeset	1167 }
a61af66fc99e Initial load duke parents: diff changeset	1168
a61af66fc99e Initial load duke parents: diff changeset	1169 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	1170 static bool invoke_no_policy(bool maximum_heap_compaction);
0 a61af66fc99e Initial load duke parents: diff changeset	1171
a61af66fc99e Initial load duke parents: diff changeset	1172 static void post_initialize();
a61af66fc99e Initial load duke parents: diff changeset	1173 // Perform initialization for PSParallelCompact that requires
a61af66fc99e Initial load duke parents: diff changeset	1174 // allocations. This should be called during the VM initialization
a61af66fc99e Initial load duke parents: diff changeset	1175 // at a pointer where it would be appropriate to return a JNI_ENOMEM
a61af66fc99e Initial load duke parents: diff changeset	1176 // in the event of a failure.
a61af66fc99e Initial load duke parents: diff changeset	1177 static bool initialize();
a61af66fc99e Initial load duke parents: diff changeset	1178
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1179 // Closure accessors
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1180 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	1181 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	1182 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	1183
0 a61af66fc99e Initial load duke parents: diff changeset	1184 // Public accessors
a61af66fc99e Initial load duke parents: diff changeset	1185 static elapsedTimer* accumulated_time() { return &_accumulated_time; }
a61af66fc99e Initial load duke parents: diff changeset	1186 static unsigned int total_invocations() { return _total_invocations; }
a61af66fc99e Initial load duke parents: diff changeset	1187 static CollectorCounters* counters() { return _counters; }
a61af66fc99e Initial load duke parents: diff changeset	1188
a61af66fc99e Initial load duke parents: diff changeset	1189 // Used to add tasks
a61af66fc99e Initial load duke parents: diff changeset	1190 static GCTaskManager* const gc_task_manager();
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1191 static Klass* updated_int_array_klass_obj() {
0 a61af66fc99e Initial load duke parents: diff changeset	1192 return _updated_int_array_klass_obj;
a61af66fc99e Initial load duke parents: diff changeset	1193 }
a61af66fc99e Initial load duke parents: diff changeset	1194
a61af66fc99e Initial load duke parents: diff changeset	1195 // Marking support
a61af66fc99e Initial load duke parents: diff changeset	1196 static inline bool mark_obj(oop obj);
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1197 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	1198 // 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	1199 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	1200 T* p);
10179 a08c80e9e1e5 8012687: Remove unused is_root checks and closures stefank parents: 9076 diff changeset	1201 template <class T> static inline void adjust_pointer(T* p);
0 a61af66fc99e Initial load duke parents: diff changeset	1202
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1203 static void follow_klass(ParCompactionManager* cm, Klass* klass);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1204 static void adjust_klass(ParCompactionManager* cm, Klass* klass);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1205
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1206 static void follow_class_loader(ParCompactionManager* cm,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1207 ClassLoaderData* klass);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1208 static void adjust_class_loader(ParCompactionManager* cm,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1209 ClassLoaderData* klass);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1210
0 a61af66fc99e Initial load duke parents: diff changeset	1211 // Compaction support.
a61af66fc99e Initial load duke parents: diff changeset	1212 // Return true if p is in the range [beg_addr, end_addr).
a61af66fc99e Initial load duke parents: diff changeset	1213 static inline bool is_in(HeapWord* p, HeapWord* beg_addr, HeapWord* end_addr);
a61af66fc99e Initial load duke parents: diff changeset	1214 static inline bool is_in(oop* p, HeapWord* beg_addr, HeapWord* end_addr);
a61af66fc99e Initial load duke parents: diff changeset	1215
a61af66fc99e Initial load duke parents: diff changeset	1216 // Convenience wrappers for per-space data kept in _space_info.
a61af66fc99e Initial load duke parents: diff changeset	1217 static inline MutableSpace* space(SpaceId space_id);
a61af66fc99e Initial load duke parents: diff changeset	1218 static inline HeapWord* new_top(SpaceId space_id);
a61af66fc99e Initial load duke parents: diff changeset	1219 static inline HeapWord* dense_prefix(SpaceId space_id);
a61af66fc99e Initial load duke parents: diff changeset	1220 static inline ObjectStartArray* start_array(SpaceId space_id);
a61af66fc99e Initial load duke parents: diff changeset	1221
a61af66fc99e Initial load duke parents: diff changeset	1222 // Move and update the live objects in the specified space.
a61af66fc99e Initial load duke parents: diff changeset	1223 static void move_and_update(ParCompactionManager* cm, SpaceId space_id);
a61af66fc99e Initial load duke parents: diff changeset	1224
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1225 // Process the end of the given region range in the dense prefix.
0 a61af66fc99e Initial load duke parents: diff changeset	1226 // This includes saving any object not updated.
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1227 static void dense_prefix_regions_epilogue(ParCompactionManager* cm,
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1228 size_t region_start_index,
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1229 size_t region_end_index,
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1230 idx_t exiting_object_offset,
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1231 idx_t region_offset_start,
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1232 idx_t region_offset_end);
0 a61af66fc99e Initial load duke parents: diff changeset	1233
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1234 // 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	1235 // in the region, update it's interior references. For each
0 a61af66fc99e Initial load duke parents: diff changeset	1236 // 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	1237 // 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	1238 // live object regardless of the region_index_end. None of the
0 a61af66fc99e Initial load duke parents: diff changeset	1239 // objects in the dense prefix move and dead space is dead
a61af66fc99e Initial load duke parents: diff changeset	1240 // (holds only dead objects that don't need any processing), so
a61af66fc99e Initial load duke parents: diff changeset	1241 // dead space can be filled in any order.
a61af66fc99e Initial load duke parents: diff changeset	1242 static void update_and_deadwood_in_dense_prefix(ParCompactionManager* cm,
a61af66fc99e Initial load duke parents: diff changeset	1243 SpaceId space_id,
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1244 size_t region_index_start,
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1245 size_t region_index_end);
0 a61af66fc99e Initial load duke parents: diff changeset	1246
a61af66fc99e Initial load duke parents: diff changeset	1247 // Return the address of the count + 1st live word in the range [beg, end).
a61af66fc99e Initial load duke parents: diff changeset	1248 static HeapWord* skip_live_words(HeapWord* beg, HeapWord* end, size_t count);
a61af66fc99e Initial load duke parents: diff changeset	1249
a61af66fc99e Initial load duke parents: diff changeset	1250 // 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	1251 // aligned to a region boundary.
0 a61af66fc99e Initial load duke parents: diff changeset	1252 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	1253 SpaceId src_space_id,
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1254 size_t src_region_idx);
0 a61af66fc99e Initial load duke parents: diff changeset	1255
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1256 // 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	1257 // new region return the region index. Parameter end_addr is the address one
0 a61af66fc99e Initial load duke parents: diff changeset	1258 // beyond the end of source range just processed. If necessary, switch to a
a61af66fc99e Initial load duke parents: diff changeset	1259 // new source space and set src_space_id (in-out parameter) and src_space_top
a61af66fc99e Initial load duke parents: diff changeset	1260 // (out parameter) accordingly.
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1261 static size_t next_src_region(MoveAndUpdateClosure& closure,
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1262 SpaceId& src_space_id,
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1263 HeapWord*& src_space_top,
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1264 HeapWord* end_addr);
0 a61af66fc99e Initial load duke parents: diff changeset	1265
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1266 // 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	1267 // 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	1268 // count for a region goes to 0 and it needs to be filled, enqueue it.
0 a61af66fc99e Initial load duke parents: diff changeset	1269 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	1270 SpaceId src_space_id,
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1271 size_t beg_region,
0 a61af66fc99e Initial load duke parents: diff changeset	1272 HeapWord* end_addr);
a61af66fc99e Initial load duke parents: diff changeset	1273
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1274 // 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	1275 static void fill_region(ParCompactionManager* cm, size_t region_idx);
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1276 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	1277 fill_region(cm, region);
0 a61af66fc99e Initial load duke parents: diff changeset	1278 }
a61af66fc99e Initial load duke parents: diff changeset	1279
10369 5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	1280 // Fill in the block table for the specified region.
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	1281 static void fill_blocks(size_t region_idx);
5534bd30c151 6725714: par compact - add a table to speed up bitmap searches jcoomes parents: 10329 diff changeset	1282
0 a61af66fc99e Initial load duke parents: diff changeset	1283 // Update the deferred objects in the space.
a61af66fc99e Initial load duke parents: diff changeset	1284 static void update_deferred_objects(ParCompactionManager* cm, SpaceId id);
a61af66fc99e Initial load duke parents: diff changeset	1285
a61af66fc99e Initial load duke parents: diff changeset	1286 static ParMarkBitMap* mark_bitmap() { return &_mark_bitmap; }
a61af66fc99e Initial load duke parents: diff changeset	1287 static ParallelCompactData& summary_data() { return _summary_data; }
a61af66fc99e Initial load duke parents: diff changeset	1288
a61af66fc99e Initial load duke parents: diff changeset	1289 // Reference Processing
a61af66fc99e Initial load duke parents: diff changeset	1290 static ReferenceProcessor* const ref_processor() { return _ref_processor; }
a61af66fc99e Initial load duke parents: diff changeset	1291
10405 f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10369 diff changeset	1292 static STWGCTimer* gc_timer() { return &_gc_timer; }
f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10369 diff changeset	1293
0 a61af66fc99e Initial load duke parents: diff changeset	1294 // Return the SpaceId for the given address.
a61af66fc99e Initial load duke parents: diff changeset	1295 static SpaceId space_id(HeapWord* addr);
a61af66fc99e Initial load duke parents: diff changeset	1296
a61af66fc99e Initial load duke parents: diff changeset	1297 // Time since last full gc (in milliseconds).
a61af66fc99e Initial load duke parents: diff changeset	1298 static jlong millis_since_last_gc();
a61af66fc99e Initial load duke parents: diff changeset	1299
9076 7b835924c31c 8011872: Include Bit Map addresses in the hs_err files stefank parents: 7448 diff changeset	1300 static void print_on_error(outputStream* st);
7b835924c31c 8011872: Include Bit Map addresses in the hs_err files stefank parents: 7448 diff changeset	1301
0 a61af66fc99e Initial load duke parents: diff changeset	1302 #ifndef PRODUCT
a61af66fc99e Initial load duke parents: diff changeset	1303 // Debugging support.
a61af66fc99e Initial load duke parents: diff changeset	1304 static const char* space_names[last_space_id];
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1305 static void print_region_ranges();
0 a61af66fc99e Initial load duke parents: diff changeset	1306 static void print_dense_prefix_stats(const char* const algorithm,
a61af66fc99e Initial load duke parents: diff changeset	1307 const SpaceId id,
a61af66fc99e Initial load duke parents: diff changeset	1308 const bool maximum_compaction,
a61af66fc99e Initial load duke parents: diff changeset	1309 HeapWord* const addr);
482 7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	1310 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	1311 HeapWord* dst_beg, HeapWord* dst_end,
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	1312 SpaceId src_space_id,
7c2386d67889 6765745: par compact - allow young gen spaces to be split jcoomes parents: 481 diff changeset	1313 HeapWord* src_beg, HeapWord* src_end);
0 a61af66fc99e Initial load duke parents: diff changeset	1314 #endif // #ifndef PRODUCT
a61af66fc99e Initial load duke parents: diff changeset	1315
a61af66fc99e Initial load duke parents: diff changeset	1316 #ifdef ASSERT
495 234c22e54b98 6784849: par compact - can fail when to_space is non-empty jcoomes parents: 483 diff changeset	1317 // 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	1318 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	1319 // Verify that all the regions have been emptied.
0 a61af66fc99e Initial load duke parents: diff changeset	1320 static void verify_complete(SpaceId space_id);
a61af66fc99e Initial load duke parents: diff changeset	1321 #endif // #ifdef ASSERT
a61af66fc99e Initial load duke parents: diff changeset	1322 };
a61af66fc99e Initial load duke parents: diff changeset	1323
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1324 inline bool PSParallelCompact::mark_obj(oop obj) {
0 a61af66fc99e Initial load duke parents: diff changeset	1325 const int obj_size = obj->size();
a61af66fc99e Initial load duke parents: diff changeset	1326 if (mark_bitmap()->mark_obj(obj, obj_size)) {
a61af66fc99e Initial load duke parents: diff changeset	1327 _summary_data.add_obj(obj, obj_size);
a61af66fc99e Initial load duke parents: diff changeset	1328 return true;
a61af66fc99e Initial load duke parents: diff changeset	1329 } else {
a61af66fc99e Initial load duke parents: diff changeset	1330 return false;
a61af66fc99e Initial load duke parents: diff changeset	1331 }
a61af66fc99e Initial load duke parents: diff changeset	1332 }
a61af66fc99e Initial load duke parents: diff changeset	1333
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1334 inline bool PSParallelCompact::is_marked(oop obj) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1335 return mark_bitmap()->is_marked(obj);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1336 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1337
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1338 template <class T>
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1339 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	1340 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	1341 "roots shouldn't be things within the heap");
7448 b735136e0d82 8004132: SerialGC: ValidateMarkSweep broken when running GCOld johnc parents: 6735 diff changeset	1342
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1343 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	1344 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	1345 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	1346 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	1347 if (mark_obj(obj)) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1348 obj->follow_contents(cm);
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1349 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1350 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1351 }
1311 2a1472c30599 4396719: Mark Sweep stack overflow on deeply nested Object arrays jcoomes parents: 993 diff changeset	1352 cm->follow_marking_stacks();
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1353 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1354
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1355 template <class T>
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1356 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	1357 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	1358 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	1359 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop);
1638 b2a00dd3117c 6957084: simplify TaskQueue overflow handling jcoomes parents: 1579 diff changeset	1360 if (mark_bitmap()->is_unmarked(obj) && mark_obj(obj)) {
b2a00dd3117c 6957084: simplify TaskQueue overflow handling jcoomes parents: 1579 diff changeset	1361 cm->push(obj);
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1362 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1363 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1364 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1365
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1366 template <class T>
10179 a08c80e9e1e5 8012687: Remove unused is_root checks and closures stefank parents: 9076 diff changeset	1367 inline void PSParallelCompact::adjust_pointer(T* p) {
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1368 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	1369 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	1370 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	1371 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	1372 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	1373 "should be forwarded");
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1374 // 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	1375 if (new_obj != NULL) {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1376 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	1377 "should be in object space");
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1378 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	1379 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1380 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1381 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1382
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1383 template <class T>
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1384 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	1385 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	1386 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1387
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1388 inline bool PSParallelCompact::print_phases() {
0 a61af66fc99e Initial load duke parents: diff changeset	1389 return _print_phases;
a61af66fc99e Initial load duke parents: diff changeset	1390 }
a61af66fc99e Initial load duke parents: diff changeset	1391
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1392 inline double PSParallelCompact::normal_distribution(double density) {
0 a61af66fc99e Initial load duke parents: diff changeset	1393 assert(_dwl_initialized, "uninitialized");
a61af66fc99e Initial load duke parents: diff changeset	1394 const double squared_term = (density - _dwl_mean) / _dwl_std_dev;
a61af66fc99e Initial load duke parents: diff changeset	1395 return _dwl_first_term * exp(-0.5 * squared_term * squared_term);
a61af66fc99e Initial load duke parents: diff changeset	1396 }
a61af66fc99e Initial load duke parents: diff changeset	1397
a61af66fc99e Initial load duke parents: diff changeset	1398 inline bool
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1399 PSParallelCompact::dead_space_crosses_boundary(const RegionData* region,
0 a61af66fc99e Initial load duke parents: diff changeset	1400 idx_t bit)
a61af66fc99e Initial load duke parents: diff changeset	1401 {
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 269 diff changeset	1402 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	1403 assert(_summary_data.region_to_addr(region) == _mark_bitmap.bit_to_addr(bit),
0 a61af66fc99e Initial load duke parents: diff changeset	1404 "sanity check");
a61af66fc99e Initial load duke parents: diff changeset	1405
a61af66fc99e Initial load duke parents: diff changeset	1406 // 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	1407 // 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	1408 // 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	1409 return region->partial_obj_size() == 0 &&
0 a61af66fc99e Initial load duke parents: diff changeset	1410 !_mark_bitmap.is_obj_beg(bit) &&
a61af66fc99e Initial load duke parents: diff changeset	1411 !_mark_bitmap.is_obj_end(bit - 1);
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 bool
a61af66fc99e Initial load duke parents: diff changeset	1415 PSParallelCompact::is_in(HeapWord* p, HeapWord* beg_addr, HeapWord* end_addr) {
a61af66fc99e Initial load duke parents: diff changeset	1416 return p >= beg_addr && p < end_addr;
a61af66fc99e Initial load duke parents: diff changeset	1417 }
a61af66fc99e Initial load duke parents: diff changeset	1418
a61af66fc99e Initial load duke parents: diff changeset	1419 inline bool
a61af66fc99e Initial load duke parents: diff changeset	1420 PSParallelCompact::is_in(oop* p, HeapWord* beg_addr, HeapWord* end_addr) {
a61af66fc99e Initial load duke parents: diff changeset	1421 return is_in((HeapWord*)p, beg_addr, end_addr);
a61af66fc99e Initial load duke parents: diff changeset	1422 }
a61af66fc99e Initial load duke parents: diff changeset	1423
a61af66fc99e Initial load duke parents: diff changeset	1424 inline MutableSpace* PSParallelCompact::space(SpaceId id) {
a61af66fc99e Initial load duke parents: diff changeset	1425 assert(id < last_space_id, "id out of range");
a61af66fc99e Initial load duke parents: diff changeset	1426 return _space_info[id].space();
a61af66fc99e Initial load duke parents: diff changeset	1427 }
a61af66fc99e Initial load duke parents: diff changeset	1428
a61af66fc99e Initial load duke parents: diff changeset	1429 inline HeapWord* PSParallelCompact::new_top(SpaceId id) {
a61af66fc99e Initial load duke parents: diff changeset	1430 assert(id < last_space_id, "id out of range");
a61af66fc99e Initial load duke parents: diff changeset	1431 return _space_info[id].new_top();
a61af66fc99e Initial load duke parents: diff changeset	1432 }
a61af66fc99e Initial load duke parents: diff changeset	1433
a61af66fc99e Initial load duke parents: diff changeset	1434 inline HeapWord* PSParallelCompact::dense_prefix(SpaceId id) {
a61af66fc99e Initial load duke parents: diff changeset	1435 assert(id < last_space_id, "id out of range");
a61af66fc99e Initial load duke parents: diff changeset	1436 return _space_info[id].dense_prefix();
a61af66fc99e Initial load duke parents: diff changeset	1437 }
a61af66fc99e Initial load duke parents: diff changeset	1438
a61af66fc99e Initial load duke parents: diff changeset	1439 inline ObjectStartArray* PSParallelCompact::start_array(SpaceId id) {
a61af66fc99e Initial load duke parents: diff changeset	1440 assert(id < last_space_id, "id out of range");
a61af66fc99e Initial load duke parents: diff changeset	1441 return _space_info[id].start_array();
a61af66fc99e Initial load duke parents: diff changeset	1442 }
a61af66fc99e Initial load duke parents: diff changeset	1443
495 234c22e54b98 6784849: par compact - can fail when to_space is non-empty jcoomes parents: 483 diff changeset	1444 #ifdef ASSERT
234c22e54b98 6784849: par compact - can fail when to_space is non-empty jcoomes parents: 483 diff changeset	1445 inline void
234c22e54b98 6784849: par compact - can fail when to_space is non-empty jcoomes parents: 483 diff changeset	1446 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	1447 {
234c22e54b98 6784849: par compact - can fail when to_space is non-empty jcoomes parents: 483 diff changeset	1448 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	1449 "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	1450 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	1451 "checking alignment");
495 234c22e54b98 6784849: par compact - can fail when to_space is non-empty jcoomes parents: 483 diff changeset	1452 }
234c22e54b98 6784849: par compact - can fail when to_space is non-empty jcoomes parents: 483 diff changeset	1453 #endif // ASSERT
234c22e54b98 6784849: par compact - can fail when to_space is non-empty jcoomes parents: 483 diff changeset	1454
0 a61af66fc99e Initial load duke parents: diff changeset	1455 class MoveAndUpdateClosure: public ParMarkBitMapClosure {
a61af66fc99e Initial load duke parents: diff changeset	1456 public:
a61af66fc99e Initial load duke parents: diff changeset	1457 inline MoveAndUpdateClosure(ParMarkBitMap* bitmap, ParCompactionManager* cm,
a61af66fc99e Initial load duke parents: diff changeset	1458 ObjectStartArray* start_array,
a61af66fc99e Initial load duke parents: diff changeset	1459 HeapWord* destination, size_t words);
a61af66fc99e Initial load duke parents: diff changeset	1460
a61af66fc99e Initial load duke parents: diff changeset	1461 // Accessors.
a61af66fc99e Initial load duke parents: diff changeset	1462 HeapWord* destination() const { return _destination; }
a61af66fc99e Initial load duke parents: diff changeset	1463
a61af66fc99e Initial load duke parents: diff changeset	1464 // If the object will fit (size <= words_remaining()), copy it to the current
a61af66fc99e Initial load duke parents: diff changeset	1465 // destination, update the interior oops and the start array and return either
a61af66fc99e Initial load duke parents: diff changeset	1466 // full (if the closure is full) or incomplete. If the object will not fit,
a61af66fc99e Initial load duke parents: diff changeset	1467 // return would_overflow.
a61af66fc99e Initial load duke parents: diff changeset	1468 virtual IterationStatus do_addr(HeapWord* addr, size_t size);
a61af66fc99e Initial load duke parents: diff changeset	1469
a61af66fc99e Initial load duke parents: diff changeset	1470 // Copy enough words to fill this closure, starting at source(). Interior
a61af66fc99e Initial load duke parents: diff changeset	1471 // oops and the start array are not updated. Return full.
a61af66fc99e Initial load duke parents: diff changeset	1472 IterationStatus copy_until_full();
a61af66fc99e Initial load duke parents: diff changeset	1473
a61af66fc99e Initial load duke parents: diff changeset	1474 // Copy enough words to fill this closure or to the end of an object,
a61af66fc99e Initial load duke parents: diff changeset	1475 // whichever is smaller, starting at source(). Interior oops and the start
a61af66fc99e Initial load duke parents: diff changeset	1476 // array are not updated.
a61af66fc99e Initial load duke parents: diff changeset	1477 void copy_partial_obj();
a61af66fc99e Initial load duke parents: diff changeset	1478
a61af66fc99e Initial load duke parents: diff changeset	1479 protected:
a61af66fc99e Initial load duke parents: diff changeset	1480 // Update variables to indicate that word_count words were processed.
a61af66fc99e Initial load duke parents: diff changeset	1481 inline void update_state(size_t word_count);
a61af66fc99e Initial load duke parents: diff changeset	1482
a61af66fc99e Initial load duke parents: diff changeset	1483 protected:
a61af66fc99e Initial load duke parents: diff changeset	1484 ObjectStartArray* const _start_array;
a61af66fc99e Initial load duke parents: diff changeset	1485 HeapWord* _destination; // Next addr to be written.
a61af66fc99e Initial load duke parents: diff changeset	1486 };
a61af66fc99e Initial load duke parents: diff changeset	1487
a61af66fc99e Initial load duke parents: diff changeset	1488 inline
a61af66fc99e Initial load duke parents: diff changeset	1489 MoveAndUpdateClosure::MoveAndUpdateClosure(ParMarkBitMap* bitmap,
a61af66fc99e Initial load duke parents: diff changeset	1490 ParCompactionManager* cm,
a61af66fc99e Initial load duke parents: diff changeset	1491 ObjectStartArray* start_array,
a61af66fc99e Initial load duke parents: diff changeset	1492 HeapWord* destination,
a61af66fc99e Initial load duke parents: diff changeset	1493 size_t words) :
a61af66fc99e Initial load duke parents: diff changeset	1494 ParMarkBitMapClosure(bitmap, cm, words), _start_array(start_array)
a61af66fc99e Initial load duke parents: diff changeset	1495 {
a61af66fc99e Initial load duke parents: diff changeset	1496 _destination = destination;
a61af66fc99e Initial load duke parents: diff changeset	1497 }
a61af66fc99e Initial load duke parents: diff changeset	1498
a61af66fc99e Initial load duke parents: diff changeset	1499 inline void MoveAndUpdateClosure::update_state(size_t words)
a61af66fc99e Initial load duke parents: diff changeset	1500 {
a61af66fc99e Initial load duke parents: diff changeset	1501 decrement_words_remaining(words);
a61af66fc99e Initial load duke parents: diff changeset	1502 _source += words;
a61af66fc99e Initial load duke parents: diff changeset	1503 _destination += words;
a61af66fc99e Initial load duke parents: diff changeset	1504 }
a61af66fc99e Initial load duke parents: diff changeset	1505
a61af66fc99e Initial load duke parents: diff changeset	1506 class UpdateOnlyClosure: public ParMarkBitMapClosure {
a61af66fc99e Initial load duke parents: diff changeset	1507 private:
a61af66fc99e Initial load duke parents: diff changeset	1508 const PSParallelCompact::SpaceId _space_id;
a61af66fc99e Initial load duke parents: diff changeset	1509 ObjectStartArray* const _start_array;
a61af66fc99e Initial load duke parents: diff changeset	1510
a61af66fc99e Initial load duke parents: diff changeset	1511 public:
a61af66fc99e Initial load duke parents: diff changeset	1512 UpdateOnlyClosure(ParMarkBitMap* mbm,
a61af66fc99e Initial load duke parents: diff changeset	1513 ParCompactionManager* cm,
a61af66fc99e Initial load duke parents: diff changeset	1514 PSParallelCompact::SpaceId space_id);
a61af66fc99e Initial load duke parents: diff changeset	1515
a61af66fc99e Initial load duke parents: diff changeset	1516 // Update the object.
a61af66fc99e Initial load duke parents: diff changeset	1517 virtual IterationStatus do_addr(HeapWord* addr, size_t words);
a61af66fc99e Initial load duke parents: diff changeset	1518
a61af66fc99e Initial load duke parents: diff changeset	1519 inline void do_addr(HeapWord* addr);
a61af66fc99e Initial load duke parents: diff changeset	1520 };
a61af66fc99e Initial load duke parents: diff changeset	1521
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1522 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	1523 {
0 a61af66fc99e Initial load duke parents: diff changeset	1524 _start_array->allocate_block(addr);
a61af66fc99e Initial load duke parents: diff changeset	1525 oop(addr)->update_contents(compaction_manager());
a61af66fc99e Initial load duke parents: diff changeset	1526 }
a61af66fc99e Initial load duke parents: diff changeset	1527
481 7d7a7c599c17 6578152: fill_region_with_object has usability and safety issues jcoomes parents: 376 diff changeset	1528 class FillClosure: public ParMarkBitMapClosure
7d7a7c599c17 6578152: fill_region_with_object has usability and safety issues jcoomes parents: 376 diff changeset	1529 {
7d7a7c599c17 6578152: fill_region_with_object has usability and safety issues jcoomes parents: 376 diff changeset	1530 public:
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	1531 FillClosure(ParCompactionManager* cm, PSParallelCompact::SpaceId space_id) :
0 a61af66fc99e Initial load duke parents: diff changeset	1532 ParMarkBitMapClosure(PSParallelCompact::mark_bitmap(), cm),
481 7d7a7c599c17 6578152: fill_region_with_object has usability and safety issues jcoomes parents: 376 diff changeset	1533 _start_array(PSParallelCompact::start_array(space_id))
7d7a7c599c17 6578152: fill_region_with_object has usability and safety issues jcoomes parents: 376 diff changeset	1534 {
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4913 diff changeset	1535 assert(space_id == PSParallelCompact::old_space_id,
0 a61af66fc99e Initial load duke parents: diff changeset	1536 "cannot use FillClosure in the young gen");
a61af66fc99e Initial load duke parents: diff changeset	1537 }
a61af66fc99e Initial load duke parents: diff changeset	1538
a61af66fc99e Initial load duke parents: diff changeset	1539 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	1540 CollectedHeap::fill_with_objects(addr, size);
7d7a7c599c17 6578152: fill_region_with_object has usability and safety issues jcoomes parents: 376 diff changeset	1541 HeapWord* const end = addr + size;
7d7a7c599c17 6578152: fill_region_with_object has usability and safety issues jcoomes parents: 376 diff changeset	1542 do {
7d7a7c599c17 6578152: fill_region_with_object has usability and safety issues jcoomes parents: 376 diff changeset	1543 _start_array->allocate_block(addr);
7d7a7c599c17 6578152: fill_region_with_object has usability and safety issues jcoomes parents: 376 diff changeset	1544 addr += oop(addr)->size();
7d7a7c599c17 6578152: fill_region_with_object has usability and safety issues jcoomes parents: 376 diff changeset	1545 } while (addr < end);
0 a61af66fc99e Initial load duke parents: diff changeset	1546 return ParMarkBitMap::incomplete;
a61af66fc99e Initial load duke parents: diff changeset	1547 }
a61af66fc99e Initial load duke parents: diff changeset	1548
a61af66fc99e Initial load duke parents: diff changeset	1549 private:
481 7d7a7c599c17 6578152: fill_region_with_object has usability and safety issues jcoomes parents: 376 diff changeset	1550 ObjectStartArray* const _start_array;
0 a61af66fc99e Initial load duke parents: diff changeset	1551 };
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1638 diff changeset	1552
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1638 diff changeset	1553 #endif // SHARE_VM_GC_IMPLEMENTATION_PARALLELSCAVENGE_PSPARALLELCOMPACT_HPP

Mercurial > hg > graal-compiler

annotate src/share/vm/gc_implementation/parallelScavenge/psParallelCompact.hpp @ 10405:f2110083203d