graal-compiler: src/share/vm/gc_implementation/g1/collectionSetChooser.hpp annotate

annotate src/share/vm/gc_implementation/g1/collectionSetChooser.hpp @ 6010:720b6a76dd9d

7157073: G1: type change size_t -> uint for region counts / indexes Summary: Change the type of fields / variables / etc. that represent region counts and indeces from size_t to uint. Reviewed-by: iveresov, brutisso, jmasa, jwilhelm

author	tonyp
date	Wed, 18 Apr 2012 07:21:15 -0400
parents	a9647476d1a4
children	f7a8920427a6

rev	line source
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1 /*
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	2 * Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved.
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	4 *
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	5 * This code is free software; you can redistribute it and/or modify it
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	6 * under the terms of the GNU General Public License version 2 only, as
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	7 * published by the Free Software Foundation.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	8 *
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	9 * This code is distributed in the hope that it will be useful, but WITHOUT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	12 * version 2 for more details (a copy is included in the LICENSE file that
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	13 * accompanied this code).
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	14 *
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	15 * You should have received a copy of the GNU General Public License version
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	16 * 2 along with this work; if not, write to the Free Software Foundation,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	18 *
1552 c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 579 diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 579 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: 579 diff changeset	21 * questions.
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	22 *
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	23 */
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	24
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	25 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_COLLECTIONSETCHOOSER_HPP
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	26 #define SHARE_VM_GC_IMPLEMENTATION_G1_COLLECTIONSETCHOOSER_HPP
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	27
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	28 #include "gc_implementation/g1/heapRegion.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	29 #include "utilities/growableArray.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	30
549 fe3d7c11b4b7 6700941: G1: allocation spec missing for some G1 classes apetrusenko parents: 342 diff changeset	31 class CSetChooserCache VALUE_OBJ_CLASS_SPEC {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	32 private:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	33 enum {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	34 CacheLength = 16
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	35 } PrivateConstants;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	36
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	37 HeapRegion* _cache[CacheLength];
3989 b9390528617c 7095236: G1: _markedRegions never contains NULL regions ysr parents: 2435 diff changeset	38 int _occupancy; // number of regions in cache
b9390528617c 7095236: G1: _markedRegions never contains NULL regions ysr parents: 2435 diff changeset	39 int _first; // (index of) "first" region in the cache
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	40
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	41 // adding CacheLength to deal with negative values
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	42 inline int trim_index(int index) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	43 return (index + CacheLength) % CacheLength;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	44 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	45
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	46 inline int get_sort_index(int index) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	47 return -index-2;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	48 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	49 inline int get_index(int sort_index) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	50 return -sort_index-2;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	51 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	52
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	53 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	54 CSetChooserCache(void);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	55
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	56 inline int occupancy(void) { return _occupancy; }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	57 inline bool is_full() { return _occupancy == CacheLength; }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	58 inline bool is_empty() { return _occupancy == 0; }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	59
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	60 void clear(void);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	61 void insert(HeapRegion *hr);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	62 HeapRegion *remove_first(void);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	63 inline HeapRegion *get_first(void) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	64 return _cache[_first];
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	65 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	66
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	67 #ifndef PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	68 bool verify (void);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	69 bool region_in_cache(HeapRegion *hr) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	70 int sort_index = hr->sort_index();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	71 if (sort_index < -1) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	72 int index = get_index(sort_index);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	73 guarantee(index < CacheLength, "should be within bounds");
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	74 return _cache[index] == hr;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	75 } else
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	76 return 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	77 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	78 #endif // PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	79 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	80
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	81 class CollectionSetChooser: public CHeapObj {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	82
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	83 GrowableArray<HeapRegion*> _markedRegions;
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	84
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	85 // The index of the next candidate old region to be considered for
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	86 // addition to the CSet.
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	87 int _curr_index;
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	88
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	89 // The number of candidate old regions added to the CSet chooser.
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	90 int _length;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	91
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	92 CSetChooserCache _cache;
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	93 jint _first_par_unreserved_idx;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	94
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	95 // If a region has more live bytes than this threshold, it will not
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	96 // be added to the CSet chooser and will not be a candidate for
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	97 // collection.
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	98 size_t _regionLiveThresholdBytes;
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	99
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	100 // The sum of reclaimable bytes over all the regions in the CSet chooser.
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	101 size_t _remainingReclaimableBytes;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	102
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	103 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	104
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	105 // Return the current candidate region to be considered for
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	106 // collection without removing it from the CSet chooser.
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	107 HeapRegion* peek() {
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	108 HeapRegion* res = NULL;
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	109 if (_curr_index < _length) {
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	110 res = _markedRegions.at(_curr_index);
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	111 assert(res != NULL,
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	112 err_msg("Unexpected NULL hr in _markedRegions at index %d",
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	113 _curr_index));
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	114 }
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	115 return res;
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	116 }
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	117
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	118 // Remove the given region from the CSet chooser and move to the
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	119 // next one. The given region should be the current candidate region
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	120 // in the CSet chooser.
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	121 void remove_and_move_to_next(HeapRegion* hr) {
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	122 assert(hr != NULL, "pre-condition");
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	123 assert(_curr_index < _length, "pre-condition");
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	124 assert(_markedRegions.at(_curr_index) == hr, "pre-condition");
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	125 hr->set_sort_index(-1);
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	126 _markedRegions.at_put(_curr_index, NULL);
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	127 assert(hr->reclaimable_bytes() <= _remainingReclaimableBytes,
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	128 err_msg("remaining reclaimable bytes inconsistent "
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	129 "from region: "SIZE_FORMAT" remaining: "SIZE_FORMAT,
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	130 hr->reclaimable_bytes(), _remainingReclaimableBytes));
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	131 _remainingReclaimableBytes -= hr->reclaimable_bytes();
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	132 _curr_index += 1;
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	133 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	134
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	135 CollectionSetChooser();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	136
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	137 void sortMarkedHeapRegions();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	138 void fillCache();
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	139
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	140 // Determine whether to add the given region to the CSet chooser or
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	141 // not. Currently, we skip humongous regions (we never add them to
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	142 // the CSet, we only reclaim them during cleanup) and regions whose
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	143 // live bytes are over the threshold.
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	144 bool shouldAdd(HeapRegion* hr) {
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	145 assert(hr->is_marked(), "pre-condition");
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	146 assert(!hr->is_young(), "should never consider young regions");
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	147 return !hr->isHumongous() &&
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	148 hr->live_bytes() < _regionLiveThresholdBytes;
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	149 }
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	150
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	151 // Calculate the minimum number of old regions we'll add to the CSet
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	152 // during a mixed GC.
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 4912 diff changeset	153 uint calcMinOldCSetLength();
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	154
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	155 // Calculate the maximum number of old regions we'll add to the CSet
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	156 // during a mixed GC.
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 4912 diff changeset	157 uint calcMaxOldCSetLength();
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	158
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	159 // Serial version.
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	160 void addMarkedHeapRegion(HeapRegion *hr);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	161
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	162 // Must be called before calls to getParMarkedHeapRegionChunk.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	163 // "n_regions" is the number of regions, "chunkSize" the chunk size.
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 4912 diff changeset	164 void prepareForAddMarkedHeapRegionsPar(uint n_regions, uint chunkSize);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	165 // Returns the first index in a contiguous chunk of "n_regions" indexes
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	166 // that the calling thread has reserved. These must be set by the
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	167 // calling thread using "setMarkedHeapRegion" (to NULL if necessary).
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	168 jint getParMarkedHeapRegionChunk(jint n_regions);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	169 // Set the marked array entry at index to hr. Careful to claim the index
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	170 // first if in parallel.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	171 void setMarkedHeapRegion(jint index, HeapRegion* hr);
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	172 // Atomically increment the number of added regions by region_num
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	173 // and the amount of reclaimable bytes by reclaimable_bytes.
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	174 void updateTotals(jint region_num, size_t reclaimable_bytes);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	175
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	176 void clearMarkedHeapRegions();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	177
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	178 // Return the number of candidate regions that remain to be collected.
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 4912 diff changeset	179 uint remainingRegions() { return (uint) (_length - _curr_index); }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	180
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	181 // Determine whether the CSet chooser has more candidate regions or not.
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	182 bool isEmpty() { return remainingRegions() == 0; }
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	183
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	184 // Return the reclaimable bytes that remain to be collected on
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	185 // all the candidate regions in the CSet chooser.
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	186 size_t remainingReclaimableBytes () { return _remainingReclaimableBytes; }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	187
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	188 // Returns true if the used portion of "_markedRegions" is properly
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	189 // sorted, otherwise asserts false.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	190 #ifndef PRODUCT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	191 bool verify(void);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	192 bool regionProperlyOrdered(HeapRegion* r) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	193 int si = r->sort_index();
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	194 if (si > -1) {
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	195 guarantee(_curr_index <= si && si < _length,
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	196 err_msg("curr: %d sort index: %d: length: %d",
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	197 _curr_index, si, _length));
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	198 guarantee(_markedRegions.at(si) == r,
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	199 err_msg("sort index: %d at: "PTR_FORMAT" r: "PTR_FORMAT,
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	200 si, _markedRegions.at(si), r));
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	201 } else {
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	202 guarantee(si == -1, err_msg("sort index: %d", si));
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	203 }
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 3989 diff changeset	204 return true;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	205 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	206 #endif
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	207
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	208 };
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	209
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	210 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_COLLECTIONSETCHOOSER_HPP

Mercurial > hg > graal-compiler

annotate src/share/vm/gc_implementation/g1/collectionSetChooser.hpp @ 6010:720b6a76dd9d