truffle: src/share/vm/gc_implementation/g1/g1MonitoringSupport.hpp annotate

annotate src/share/vm/gc_implementation/g1/g1MonitoringSupport.hpp @ 4710:41406797186b

7113012: G1: rename not-fully-young GCs as "mixed" Summary: Renamed partially-young GCs as mixed and fully-young GCs as young. Change all external output that includes those terms (GC log and GC ergo log) as well as any comments, fields, methods, etc. The changeset also includes very minor code tidying up (added some curly brackets). Reviewed-by: johnc, brutisso

author	tonyp
date	Fri, 16 Dec 2011 02:14:27 -0500
parents	81aa07130d30
children	a8a126788ea0

rev	line source
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	1 /*
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	2 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
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 //
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	92 // We set this to 0 for all spaces. We could consider setting the old
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	93 // min capacity to the min capacity of the heap (see 7078465).
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	94 //
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	95 // * Max Capacity
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	96 //
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	97 // For jstat, we set the max capacity of all spaces to heap_capacity,
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	98 // given that we don't always have a reasonably upper bound on how big
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	99 // each space can grow. For the memory pools, we actually make the max
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	100 // capacity undefined. We could consider setting the old max capacity
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	101 // to the max capacity of the heap (see 7078465).
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	102 //
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	103 // If we had more accurate occupancy / capacity information per
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	104 // region set the above calculations would be greatly simplified and
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	105 // be made more accurate.
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	106 //
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	107 // 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	108 // 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	109 // 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	110 // 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	111 // but only the eden occupancy changes when a new eden region is
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	112 // allocated. So, in the latter case we have minimal recalcuation to
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	113 // 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	114 // path as low-overhead as possible.
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	115
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	116 class G1MonitoringSupport : public CHeapObj {
3984 81aa07130d30 7097048: G1: extend the G1 SA changes to print per-heap space information tonyp parents: 3980 diff changeset	117 friend class VMStructs;
81aa07130d30 7097048: G1: extend the G1 SA changes to print per-heap space information tonyp parents: 3980 diff changeset	118
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	119 G1CollectedHeap* _g1h;
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	120
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	121 // jstat performance counters
4710 41406797186b 7113012: G1: rename not-fully-young GCs as "mixed" tonyp parents: 3984 diff changeset	122 // incremental collections both young and mixed
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	123 CollectorCounters* _incremental_collection_counters;
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	124 // full stop-the-world collections
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	125 CollectorCounters* _full_collection_counters;
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	126 // young collection set counters. The _eden_counters,
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	127 // _from_counters, and _to_counters are associated with
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	128 // this "generational" counter.
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	129 GenerationCounters* _young_collection_counters;
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	130 // old collection set counters. The _old_space_counters
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	131 // below are associated with this "generational" counter.
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	132 GenerationCounters* _old_collection_counters;
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	133 // Counters for the capacity and used for
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	134 // the whole heap
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	135 HSpaceCounters* _old_space_counters;
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	136 // the young collection
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	137 HSpaceCounters* _eden_counters;
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	138 // the survivor collection (only one, _to_counters, is actively used)
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	139 HSpaceCounters* _from_counters;
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	140 HSpaceCounters* _to_counters;
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	141
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	142 // 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	143 // 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	144 // 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	145 // have to recalculate them every time.
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	146
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	147 size_t _overall_reserved;
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	148 size_t _overall_committed;
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	149 size_t _overall_used;
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	150
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	151 size_t _young_region_num;
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	152 size_t _young_gen_committed;
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	153 size_t _eden_committed;
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	154 size_t _eden_used;
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	155 size_t _survivor_committed;
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	156 size_t _survivor_used;
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	157
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	158 size_t _old_committed;
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	159 size_t _old_used;
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	160
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	161 G1CollectedHeap* g1h() { return _g1h; }
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	162
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	163 // It returns x - y if x > y, 0 otherwise.
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	164 // 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	165 // calculations we have to do are obtained concurrently and hence
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	166 // may be inconsistent with each other. So, this provides a
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	167 // defensive way of performing the subtraction and avoids the value
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	168 // 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	169 // the parameter are size_t).
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	170 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	171 if (x > y) {
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	172 return x - y;
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	173 } else {
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	174 return 0;
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 }
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	177
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	178 // Recalculate all the sizes.
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	179 void recalculate_sizes();
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	180 // 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	181 void recalculate_eden_size();
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	182
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	183 public:
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	184 G1MonitoringSupport(G1CollectedHeap* g1h);
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	185
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	186 // Unfortunately, the jstat tool assumes that no space has 0
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	187 // 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	188 // 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	189 // 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	190 // 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	191 // 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	192 // 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	193 // report a capacity of a generation that contains several spaces
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	194 // (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	195 // mult parameter is provided in order to adding the appropriate
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	196 // padding multiple times so that the capacities add up correctly.
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	197 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	198 return size_bytes + MinObjAlignmentInBytes * mult;
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	199 }
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	200
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	201 // 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	202 // counters accordingly.
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	203 void update_sizes();
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	204 // 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	205 // 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	206 void update_eden_size();
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	207
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	208 CollectorCounters* incremental_collection_counters() {
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	209 return _incremental_collection_counters;
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	210 }
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	211 CollectorCounters* full_collection_counters() {
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	212 return _full_collection_counters;
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	213 }
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	214 GenerationCounters* young_collection_counters() {
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	215 return _young_collection_counters;
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	216 }
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	217 GenerationCounters* old_collection_counters() {
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3289 diff changeset	218 return _old_collection_counters;
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	219 }
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	220 HSpaceCounters* old_space_counters() { return _old_space_counters; }
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	221 HSpaceCounters* eden_counters() { return _eden_counters; }
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	222 HSpaceCounters* from_counters() { return _from_counters; }
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	223 HSpaceCounters* to_counters() { return _to_counters; }
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	224
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	225 // Monitoring support used by
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	226 // MemoryService
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: diff changeset	227 // jstat counters
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 > truffle

annotate src/share/vm/gc_implementation/g1/g1MonitoringSupport.hpp @ 4710:41406797186b