Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/tools/HeapSummary.java @ 17736:58fc1b1523dc
8034079: G1: Refactor the HeapRegionSet hierarchy
Reviewed-by: tschatzl, pliden
author | brutisso |
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date | Fri, 14 Mar 2014 10:15:46 +0100 |
parents | 55fb97c4c58d |
children | 52b4284cb496 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 package sun.jvm.hotspot.tools; | |
26 | |
27 import java.util.*; | |
28 import sun.jvm.hotspot.gc_interface.*; | |
3972 | 29 import sun.jvm.hotspot.gc_implementation.g1.*; |
0 | 30 import sun.jvm.hotspot.gc_implementation.parallelScavenge.*; |
31 import sun.jvm.hotspot.gc_implementation.shared.*; | |
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32 import sun.jvm.hotspot.debugger.JVMDebugger; |
0 | 33 import sun.jvm.hotspot.memory.*; |
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34 import sun.jvm.hotspot.oops.*; |
0 | 35 import sun.jvm.hotspot.runtime.*; |
36 | |
37 public class HeapSummary extends Tool { | |
38 | |
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39 public HeapSummary() { |
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40 super(); |
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41 } |
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42 |
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43 public HeapSummary(JVMDebugger d) { |
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44 super(d); |
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45 } |
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46 |
0 | 47 public static void main(String[] args) { |
48 HeapSummary hs = new HeapSummary(); | |
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49 hs.execute(args); |
0 | 50 } |
51 | |
52 public void run() { | |
53 CollectedHeap heap = VM.getVM().getUniverse().heap(); | |
54 VM.Flag[] flags = VM.getVM().getCommandLineFlags(); | |
55 Map flagMap = new HashMap(); | |
56 if (flags == null) { | |
57 System.out.println("WARNING: command line flags are not available"); | |
58 } else { | |
59 for (int f = 0; f < flags.length; f++) { | |
60 flagMap.put(flags[f].getName(), flags[f]); | |
61 } | |
62 } | |
63 | |
64 System.out.println(); | |
65 printGCAlgorithm(flagMap); | |
66 System.out.println(); | |
67 System.out.println("Heap Configuration:"); | |
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68 printValue("MinHeapFreeRatio = ", getFlagValue("MinHeapFreeRatio", flagMap)); |
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69 printValue("MaxHeapFreeRatio = ", getFlagValue("MaxHeapFreeRatio", flagMap)); |
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70 printValMB("MaxHeapSize = ", getFlagValue("MaxHeapSize", flagMap)); |
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71 printValMB("NewSize = ", getFlagValue("NewSize", flagMap)); |
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72 printValMB("MaxNewSize = ", getFlagValue("MaxNewSize", flagMap)); |
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73 printValMB("OldSize = ", getFlagValue("OldSize", flagMap)); |
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74 printValue("NewRatio = ", getFlagValue("NewRatio", flagMap)); |
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75 printValue("SurvivorRatio = ", getFlagValue("SurvivorRatio", flagMap)); |
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76 printValMB("MetaspaceSize = ", getFlagValue("MetaspaceSize", flagMap)); |
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77 printValMB("CompressedClassSpaceSize = ", getFlagValue("CompressedClassSpaceSize", flagMap)); |
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78 printValMB("MaxMetaspaceSize = ", getFlagValue("MaxMetaspaceSize", flagMap)); |
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79 printValMB("G1HeapRegionSize = ", HeapRegion.grainBytes()); |
0 | 80 |
81 System.out.println(); | |
82 System.out.println("Heap Usage:"); | |
83 | |
3972 | 84 if (heap instanceof SharedHeap) { |
85 SharedHeap sharedHeap = (SharedHeap) heap; | |
86 if (sharedHeap instanceof GenCollectedHeap) { | |
87 GenCollectedHeap genHeap = (GenCollectedHeap) sharedHeap; | |
88 for (int n = 0; n < genHeap.nGens(); n++) { | |
89 Generation gen = genHeap.getGen(n); | |
90 if (gen instanceof sun.jvm.hotspot.memory.DefNewGeneration) { | |
91 System.out.println("New Generation (Eden + 1 Survivor Space):"); | |
92 printGen(gen); | |
0 | 93 |
3972 | 94 ContiguousSpace eden = ((DefNewGeneration)gen).eden(); |
95 System.out.println("Eden Space:"); | |
96 printSpace(eden); | |
97 | |
98 ContiguousSpace from = ((DefNewGeneration)gen).from(); | |
99 System.out.println("From Space:"); | |
100 printSpace(from); | |
0 | 101 |
3972 | 102 ContiguousSpace to = ((DefNewGeneration)gen).to(); |
103 System.out.println("To Space:"); | |
104 printSpace(to); | |
105 } else { | |
106 System.out.println(gen.name() + ":"); | |
107 printGen(gen); | |
108 } | |
109 } | |
110 } else if (sharedHeap instanceof G1CollectedHeap) { | |
111 G1CollectedHeap g1h = (G1CollectedHeap) sharedHeap; | |
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112 G1MonitoringSupport g1mm = g1h.g1mm(); |
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113 long edenRegionNum = g1mm.edenRegionNum(); |
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114 long survivorRegionNum = g1mm.survivorRegionNum(); |
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115 HeapRegionSetBase oldSet = g1h.oldSet(); |
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116 HeapRegionSetBase humongousSet = g1h.humongousSet(); |
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117 long oldRegionNum = oldSet.count().length() |
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118 + humongousSet.count().capacity() / HeapRegion.grainBytes(); |
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119 printG1Space("G1 Heap:", g1h.n_regions(), |
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120 g1h.used(), g1h.capacity()); |
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121 System.out.println("G1 Young Generation:"); |
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122 printG1Space("Eden Space:", edenRegionNum, |
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123 g1mm.edenUsed(), g1mm.edenCommitted()); |
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124 printG1Space("Survivor Space:", survivorRegionNum, |
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125 g1mm.survivorUsed(), g1mm.survivorCommitted()); |
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126 printG1Space("G1 Old Generation:", oldRegionNum, |
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127 g1mm.oldUsed(), g1mm.oldCommitted()); |
3972 | 128 } else { |
129 throw new RuntimeException("unknown SharedHeap type : " + heap.getClass()); | |
0 | 130 } |
131 } else if (heap instanceof ParallelScavengeHeap) { | |
132 ParallelScavengeHeap psh = (ParallelScavengeHeap) heap; | |
133 PSYoungGen youngGen = psh.youngGen(); | |
134 printPSYoungGen(youngGen); | |
135 | |
136 PSOldGen oldGen = psh.oldGen(); | |
137 long oldFree = oldGen.capacity() - oldGen.used(); | |
138 System.out.println("PS Old Generation"); | |
139 printValMB("capacity = ", oldGen.capacity()); | |
140 printValMB("used = ", oldGen.used()); | |
141 printValMB("free = ", oldFree); | |
142 System.out.println(alignment + (double)oldGen.used() * 100.0 / oldGen.capacity() + "% used"); | |
143 } else { | |
3972 | 144 throw new RuntimeException("unknown CollectedHeap type : " + heap.getClass()); |
0 | 145 } |
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146 |
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147 System.out.println(); |
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148 printInternStringStatistics(); |
0 | 149 } |
150 | |
151 // Helper methods | |
152 | |
153 private void printGCAlgorithm(Map flagMap) { | |
154 // print about new generation | |
155 long l = getFlagValue("UseParNewGC", flagMap); | |
156 if (l == 1L) { | |
157 System.out.println("using parallel threads in the new generation."); | |
158 } | |
159 | |
160 l = getFlagValue("UseTLAB", flagMap); | |
161 if (l == 1L) { | |
162 System.out.println("using thread-local object allocation."); | |
163 } | |
164 | |
165 l = getFlagValue("UseConcMarkSweepGC", flagMap); | |
166 if (l == 1L) { | |
167 System.out.println("Concurrent Mark-Sweep GC"); | |
168 return; | |
169 } | |
170 | |
171 l = getFlagValue("UseParallelGC", flagMap); | |
172 if (l == 1L) { | |
173 System.out.print("Parallel GC "); | |
174 l = getFlagValue("ParallelGCThreads", flagMap); | |
175 System.out.println("with " + l + " thread(s)"); | |
176 return; | |
177 } | |
178 | |
3972 | 179 l = getFlagValue("UseG1GC", flagMap); |
180 if (l == 1L) { | |
181 System.out.print("Garbage-First (G1) GC "); | |
182 l = getFlagValue("ParallelGCThreads", flagMap); | |
183 System.out.println("with " + l + " thread(s)"); | |
184 return; | |
185 } | |
186 | |
0 | 187 System.out.println("Mark Sweep Compact GC"); |
188 } | |
189 | |
190 private void printPSYoungGen(PSYoungGen youngGen) { | |
191 System.out.println("PS Young Generation"); | |
192 MutableSpace eden = youngGen.edenSpace(); | |
193 System.out.println("Eden Space:"); | |
194 printMutableSpace(eden); | |
195 MutableSpace from = youngGen.fromSpace(); | |
196 System.out.println("From Space:"); | |
197 printMutableSpace(from); | |
198 MutableSpace to = youngGen.toSpace(); | |
199 System.out.println("To Space:"); | |
200 printMutableSpace(to); | |
201 } | |
202 | |
203 private void printMutableSpace(MutableSpace space) { | |
204 printValMB("capacity = ", space.capacity()); | |
205 printValMB("used = ", space.used()); | |
206 long free = space.capacity() - space.used(); | |
207 printValMB("free = ", free); | |
208 System.out.println(alignment + (double)space.used() * 100.0 / space.capacity() + "% used"); | |
209 } | |
210 | |
211 private static String alignment = " "; | |
212 | |
213 private void printGen(Generation gen) { | |
214 printValMB("capacity = ", gen.capacity()); | |
215 printValMB("used = ", gen.used()); | |
216 printValMB("free = ", gen.free()); | |
217 System.out.println(alignment + (double)gen.used() * 100.0 / gen.capacity() + "% used"); | |
218 } | |
219 | |
220 private void printSpace(ContiguousSpace space) { | |
221 printValMB("capacity = ", space.capacity()); | |
222 printValMB("used = ", space.used()); | |
223 printValMB("free = ", space.free()); | |
224 System.out.println(alignment + (double)space.used() * 100.0 / space.capacity() + "% used"); | |
225 } | |
226 | |
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227 private void printG1Space(String spaceName, long regionNum, |
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228 long used, long capacity) { |
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229 long free = capacity - used; |
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230 System.out.println(spaceName); |
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231 printValue("regions = ", regionNum); |
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232 printValMB("capacity = ", capacity); |
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233 printValMB("used = ", used); |
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234 printValMB("free = ", free); |
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235 double occPerc = (capacity > 0) ? (double) used * 100.0 / capacity : 0.0; |
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236 System.out.println(alignment + occPerc + "% used"); |
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237 } |
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238 |
0 | 239 private static final double FACTOR = 1024*1024; |
240 private void printValMB(String title, long value) { | |
281
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241 if (value < 0) { |
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242 System.out.println(alignment + title + (value >>> 20) + " MB"); |
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243 } else { |
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244 double mb = value/FACTOR; |
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245 System.out.println(alignment + title + value + " (" + mb + "MB)"); |
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246 } |
0 | 247 } |
248 | |
249 private void printValue(String title, long value) { | |
250 System.out.println(alignment + title + value); | |
251 } | |
252 | |
253 private long getFlagValue(String name, Map flagMap) { | |
254 VM.Flag f = (VM.Flag) flagMap.get(name); | |
255 if (f != null) { | |
256 if (f.isBool()) { | |
257 return f.getBool()? 1L : 0L; | |
258 } else { | |
259 return Long.parseLong(f.getValue()); | |
260 } | |
261 } else { | |
262 return -1; | |
263 } | |
264 } | |
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265 |
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266 private void printInternStringStatistics() { |
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267 class StringStat implements StringTable.StringVisitor { |
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268 private int count; |
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269 private long size; |
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270 private OopField stringValueField; |
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271 |
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272 StringStat() { |
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273 VM vm = VM.getVM(); |
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274 SystemDictionary sysDict = vm.getSystemDictionary(); |
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275 InstanceKlass strKlass = sysDict.getStringKlass(); |
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276 // String has a field named 'value' of type 'char[]'. |
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277 stringValueField = (OopField) strKlass.findField("value", "[C"); |
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278 } |
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279 |
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280 private long stringSize(Instance instance) { |
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281 // We include String content in size calculation. |
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282 return instance.getObjectSize() + |
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283 stringValueField.getValue(instance).getObjectSize(); |
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284 } |
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285 |
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286 public void visit(Instance str) { |
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287 count++; |
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288 size += stringSize(str); |
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289 } |
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290 |
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291 public void print() { |
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292 System.out.println(count + |
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293 " interned Strings occupying " + size + " bytes."); |
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294 } |
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295 } |
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296 |
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297 StringStat stat = new StringStat(); |
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298 StringTable strTable = VM.getVM().getStringTable(); |
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299 strTable.stringsDo(stat); |
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300 stat.print(); |
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301 } |
0 | 302 } |