graal-compiler: src/share/vm/gc_implementation/g1/g1MonitoringSupport.hpp annotate

annotate src/share/vm/gc_implementation/g1/g1MonitoringSupport.hpp @ 14309:63a4eb8bcd23

8025856: Fix typos in the GC code Summary: Fix about 440 typos in comments in the VM code Reviewed-by: mgerdin, tschatzl, coleenp, kmo, jcoomes

author	jwilhelm
date	Thu, 23 Jan 2014 14:47:23 +0100
parents	f2110083203d
children	4ca6dc0799b6

rev	line source
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	1 /*
10405 f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 6197 diff changeset	2 * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	4 *
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	5 * This code is free software; you can redistribute it and/or modify it
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	6 * under the terms of the GNU General Public License version 2 only, as
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	7 * published by the Free Software Foundation.
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	8 *
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	9 * This code is distributed in the hope that it will be useful, but WITHOUT
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	12 * version 2 for more details (a copy is included in the LICENSE file that
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	13 * accompanied this code).
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	14 *
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	15 * You should have received a copy of the GNU General Public License version
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	16 * 2 along with this work; if not, write to the Free Software Foundation,
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	18 *
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	20 * or visit www.oracle.com if you need additional information or have any
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	21 * questions.
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	22 *
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	23 */
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	24
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	25 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1MONITORINGSUPPORT_HPP
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1MONITORINGSUPPORT_HPP
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	27
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	28 #include "gc_implementation/shared/hSpaceCounters.hpp"
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	29
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	30 class G1CollectedHeap;
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	31
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	32 // Class for monitoring logical spaces in G1. It provides data for
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	33 // both G1's jstat counters as well as G1's memory pools.
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	34 //
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	35 // G1 splits the heap into heap regions and each heap region belongs
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	36 // to one of the following categories:
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	37 //
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	38 // * eden : regions that have been allocated since the last GC
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	39 // * survivors : regions with objects that survived the last few GCs
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	40 // * old : long-lived non-humongous regions
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	41 // * humongous : humongous regions
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	42 // * free : free regions
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	43 //
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	44 // The combination of eden and survivor regions form the equivalent of
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	45 // the young generation in the other GCs. The combination of old and
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	46 // humongous regions form the equivalent of the old generation in the
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	47 // other GCs. Free regions do not have a good equivalent in the other
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	48 // GCs given that they can be allocated as any of the other region types.
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	49 //
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	50 // The monitoring tools expect the heap to contain a number of
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	51 // generations (young, old, perm) and each generation to contain a
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	52 // number of spaces (young: eden, survivors, old). Given that G1 does
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	53 // not maintain those spaces physically (e.g., the set of
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	54 // non-contiguous eden regions can be considered as a "logical"
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	55 // space), we'll provide the illusion that those generations and
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	56 // spaces exist. In reality, each generation and space refers to a set
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	57 // of heap regions that are potentially non-contiguous.
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	58 //
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	59 // This class provides interfaces to access the min, current, and max
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	60 // capacity and current occupancy for each of G1's logical spaces and
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	61 // generations we expose to the monitoring tools. Also provided are
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	62 // counters for G1 concurrent collections and stop-the-world full heap
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	63 // collections.
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	64 //
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	65 // Below is a description of how the various sizes are calculated.
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	66 //
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	67 // * Current Capacity
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	68 //
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	69 // - heap_capacity = current heap capacity (e.g., current committed size)
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	70 // - young_gen_capacity = current max young gen target capacity
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	71 // (i.e., young gen target capacity + max allowed expansion capacity)
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	72 // - survivor_capacity = current survivor region capacity
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	73 // - eden_capacity = young_gen_capacity - survivor_capacity
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	74 // - old_capacity = heap_capacity - young_gen_capacity
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	75 //
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	76 // What we do in the above is to distribute the free regions among
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	77 // eden_capacity and old_capacity.
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	78 //
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	79 // * Occupancy
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	80 //
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	81 // - young_gen_used = current young region capacity
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	82 // - survivor_used = survivor_capacity
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	83 // - eden_used = young_gen_used - survivor_used
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	84 // - old_used = overall_used - young_gen_used
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	85 //
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	86 // Unfortunately, we currently only keep track of the number of
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	87 // currently allocated young and survivor regions + the overall used
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	88 // bytes in the heap, so the above can be a little inaccurate.
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	89 //
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	90 // * Min Capacity
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	91 //
4832 a8a126788ea0 7078465: G1: Don't use the undefined value (-1) for the G1 old memory pool max size tonyp parents: 4710 diff changeset	92 // We set this to 0 for all spaces.
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	93 //
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	94 // * Max Capacity
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	95 //
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	96 // For jstat, we set the max capacity of all spaces to heap_capacity,
4832 a8a126788ea0 7078465: G1: Don't use the undefined value (-1) for the G1 old memory pool max size tonyp parents: 4710 diff changeset	97 // given that we don't always have a reasonable upper bound on how big
a8a126788ea0 7078465: G1: Don't use the undefined value (-1) for the G1 old memory pool max size tonyp parents: 4710 diff changeset	98 // each space can grow. For the memory pools, we make the max
a8a126788ea0 7078465: G1: Don't use the undefined value (-1) for the G1 old memory pool max size tonyp parents: 4710 diff changeset	99 // capacity undefined with the exception of the old memory pool for
a8a126788ea0 7078465: G1: Don't use the undefined value (-1) for the G1 old memory pool max size tonyp parents: 4710 diff changeset	100 // which we make the max capacity same as the max heap capacity.
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	101 //
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	102 // If we had more accurate occupancy / capacity information per
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	103 // region set the above calculations would be greatly simplified and
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	104 // be made more accurate.
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	105 //
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	106 // We update all the above synchronously and we store the results in
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	107 // fields so that we just read said fields when needed. A subtle point
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	108 // is that all the above sizes need to be recalculated when the old
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	109 // gen changes capacity (after a GC or after a humongous allocation)
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	110 // but only the eden occupancy changes when a new eden region is
14309 63a4eb8bcd23 8025856: Fix typos in the GC code jwilhelm parents: 10405 diff changeset	111 // allocated. So, in the latter case we have minimal recalculation to
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	112 // do which is important as we want to keep the eden region allocation
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	113 // path as low-overhead as possible.
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	114
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6010 diff changeset	115 class G1MonitoringSupport : public CHeapObj<mtGC> {
3984 81aa07130d30 7097048: G1: extend the G1 SA changes to print per-heap space information tonyp parents: 3980 diff changeset	116 friend class VMStructs;
81aa07130d30 7097048: G1: extend the G1 SA changes to print per-heap space information tonyp parents: 3980 diff changeset	117
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	118 G1CollectedHeap* _g1h;
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	119
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	120 // jstat performance counters
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 3984 diff changeset	121 // incremental collections both young and mixed
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	122 CollectorCounters* _incremental_collection_counters;
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	123 // full stop-the-world collections
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	124 CollectorCounters* _full_collection_counters;
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	125 // young collection set counters. The _eden_counters,
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	126 // _from_counters, and _to_counters are associated with
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	127 // this "generational" counter.
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	128 GenerationCounters* _young_collection_counters;
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	129 // old collection set counters. The _old_space_counters
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	130 // below are associated with this "generational" counter.
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	131 GenerationCounters* _old_collection_counters;
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	132 // Counters for the capacity and used for
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	133 // the whole heap
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	134 HSpaceCounters* _old_space_counters;
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	135 // the young collection
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	136 HSpaceCounters* _eden_counters;
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	137 // the survivor collection (only one, _to_counters, is actively used)
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	138 HSpaceCounters* _from_counters;
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	139 HSpaceCounters* _to_counters;
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	140
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	141 // When it's appropriate to recalculate the various sizes (at the
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	142 // end of a GC, when a new eden region is allocated, etc.) we store
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	143 // them here so that we can easily report them when needed and not
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	144 // have to recalculate them every time.
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	145
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	146 size_t _overall_reserved;
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	147 size_t _overall_committed;
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	148 size_t _overall_used;
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	149
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 4832 diff changeset	150 uint _young_region_num;
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	151 size_t _young_gen_committed;
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	152 size_t _eden_committed;
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	153 size_t _eden_used;
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	154 size_t _survivor_committed;
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	155 size_t _survivor_used;
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	156
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	157 size_t _old_committed;
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	158 size_t _old_used;
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	159
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	160 G1CollectedHeap* g1h() { return _g1h; }
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	161
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	162 // It returns x - y if x > y, 0 otherwise.
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	163 // As described in the comment above, some of the inputs to the
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	164 // calculations we have to do are obtained concurrently and hence
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	165 // may be inconsistent with each other. So, this provides a
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	166 // defensive way of performing the subtraction and avoids the value
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	167 // going negative (which would mean a very large result, given that
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	168 // the parameter are size_t).
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	169 static size_t subtract_up_to_zero(size_t x, size_t y) {
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	170 if (x > y) {
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	171 return x - y;
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	172 } else {
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	173 return 0;
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	174 }
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	175 }
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	176
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	177 // Recalculate all the sizes.
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	178 void recalculate_sizes();
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	179 // Recalculate only what's necessary when a new eden region is allocated.
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	180 void recalculate_eden_size();
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	181
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	182 public:
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	183 G1MonitoringSupport(G1CollectedHeap* g1h);
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	184
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	185 // Unfortunately, the jstat tool assumes that no space has 0
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	186 // capacity. In our case, given that each space is logical, it's
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	187 // possible that no regions will be allocated to it, hence to have 0
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	188 // capacity (e.g., if there are no survivor regions, the survivor
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	189 // space has 0 capacity). The way we deal with this is to always pad
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	190 // each capacity value we report to jstat by a very small amount to
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	191 // make sure that it's never zero. Given that we sometimes have to
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	192 // report a capacity of a generation that contains several spaces
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	193 // (e.g., young gen includes one eden, two survivor spaces), the
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	194 // mult parameter is provided in order to adding the appropriate
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	195 // padding multiple times so that the capacities add up correctly.
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	196 static size_t pad_capacity(size_t size_bytes, size_t mult = 1) {
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	197 return size_bytes + MinObjAlignmentInBytes * mult;
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	198 }
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	199
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	200 // Recalculate all the sizes from scratch and update all the jstat
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	201 // counters accordingly.
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	202 void update_sizes();
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	203 // Recalculate only what's necessary when a new eden region is
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	204 // allocated and update any jstat counters that need to be updated.
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	205 void update_eden_size();
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	206
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	207 CollectorCounters* incremental_collection_counters() {
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	208 return _incremental_collection_counters;
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	209 }
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	210 CollectorCounters* full_collection_counters() {
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	211 return _full_collection_counters;
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	212 }
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	213 GenerationCounters* young_collection_counters() {
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	214 return _young_collection_counters;
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	215 }
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	216 GenerationCounters* old_collection_counters() {
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	217 return _old_collection_counters;
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	218 }
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	219 HSpaceCounters* old_space_counters() { return _old_space_counters; }
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	220 HSpaceCounters* eden_counters() { return _eden_counters; }
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	221 HSpaceCounters* from_counters() { return _from_counters; }
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	222 HSpaceCounters* to_counters() { return _to_counters; }
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	223
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	224 // Monitoring support used by
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	225 // MemoryService
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	226 // jstat counters
10405 f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 6197 diff changeset	227 // Tracing
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	228
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	229 size_t overall_reserved() { return _overall_reserved; }
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	230 size_t overall_committed() { return _overall_committed; }
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	231 size_t overall_used() { return _overall_used; }
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	232
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	233 size_t young_gen_committed() { return _young_gen_committed; }
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	234 size_t young_gen_max() { return overall_reserved(); }
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	235 size_t eden_space_committed() { return _eden_committed; }
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	236 size_t eden_space_used() { return _eden_used; }
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	237 size_t survivor_space_committed() { return _survivor_committed; }
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	238 size_t survivor_space_used() { return _survivor_used; }
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	239
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	240 size_t old_gen_committed() { return old_space_committed(); }
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	241 size_t old_gen_max() { return overall_reserved(); }
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	242 size_t old_space_committed() { return _old_committed; }
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	243 size_t old_space_used() { return _old_used; }
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	244 };
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	245
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	246 class G1GenerationCounters: public GenerationCounters {
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	247 protected:
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	248 G1MonitoringSupport* _g1mm;
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	249
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	250 public:
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	251 G1GenerationCounters(G1MonitoringSupport* g1mm,
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	252 const char* name, int ordinal, int spaces,
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	253 size_t min_capacity, size_t max_capacity,
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	254 size_t curr_capacity);
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	255 };
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	256
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	257 class G1YoungGenerationCounters: public G1GenerationCounters {
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	258 public:
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	259 G1YoungGenerationCounters(G1MonitoringSupport* g1mm, const char* name);
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	260 virtual void update_all();
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	261 };
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	262
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	263 class G1OldGenerationCounters: public G1GenerationCounters {
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	264 public:
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	265 G1OldGenerationCounters(G1MonitoringSupport* g1mm, const char* name);
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	266 virtual void update_all();
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	267 };
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	268
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	269 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1MONITORINGSUPPORT_HPP

Mercurial > hg > graal-compiler

annotate src/share/vm/gc_implementation/g1/g1MonitoringSupport.hpp @ 14309:63a4eb8bcd23