Mercurial > hg > graal-compiler

comparison agent/src/share/classes/sun/jvm/hotspot/tools/HeapSummary.java @ 0:a61af66fc99e jdk7-b24

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Initial load
author duke
date Sat, 01 Dec 2007 00:00:00 +0000
parents
children a2de7dfbfcf0
comparison
equal deleted inserted replaced
-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 2003-2005 Sun Microsystems, Inc. All Rights Reserved.
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 *
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 package sun.jvm.hotspot.tools;
26
27 import java.util.*;
28 import sun.jvm.hotspot.gc_interface.*;
29 import sun.jvm.hotspot.gc_implementation.parallelScavenge.*;
30 import sun.jvm.hotspot.gc_implementation.shared.*;
31 import sun.jvm.hotspot.memory.*;
32 import sun.jvm.hotspot.runtime.*;
33 import sun.jvm.hotspot.tools.*;
34
35 public class HeapSummary extends Tool {
36
37 public static void main(String[] args) {
38 HeapSummary hs = new HeapSummary();
39 hs.start(args);
40 hs.stop();
41 }
42
43 public void run() {
44 CollectedHeap heap = VM.getVM().getUniverse().heap();
45 VM.Flag[] flags = VM.getVM().getCommandLineFlags();
46 Map flagMap = new HashMap();
47 if (flags == null) {
48 System.out.println("WARNING: command line flags are not available");
49 } else {
50 for (int f = 0; f < flags.length; f++) {
51 flagMap.put(flags[f].getName(), flags[f]);
52 }
53 }
54
55 System.out.println();
56 printGCAlgorithm(flagMap);
57 System.out.println();
58 System.out.println("Heap Configuration:");
59 printValue("MinHeapFreeRatio = ", getFlagValue("MinHeapFreeRatio", flagMap));
60 printValue("MaxHeapFreeRatio = ", getFlagValue("MaxHeapFreeRatio", flagMap));
61 printValMB("MaxHeapSize = ", getFlagValue("MaxHeapSize", flagMap));
62 printValMB("NewSize = ", getFlagValue("NewSize", flagMap));
63 printValMB("MaxNewSize = ", getFlagValue("MaxNewSize", flagMap));
64 printValMB("OldSize = ", getFlagValue("OldSize", flagMap));
65 printValue("NewRatio = ", getFlagValue("NewRatio", flagMap));
66 printValue("SurvivorRatio = ", getFlagValue("SurvivorRatio", flagMap));
67 printValMB("PermSize = ", getFlagValue("PermSize", flagMap));
68 printValMB("MaxPermSize = ", getFlagValue("MaxPermSize", flagMap));
69
70 System.out.println();
71 System.out.println("Heap Usage:");
72
73 if (heap instanceof GenCollectedHeap) {
74 GenCollectedHeap genHeap = (GenCollectedHeap) heap;
75 for (int n = 0; n < genHeap.nGens(); n++) {
76 Generation gen = genHeap.getGen(n);
77 if (gen instanceof sun.jvm.hotspot.memory.DefNewGeneration) {
78 System.out.println("New Generation (Eden + 1 Survivor Space):");
79 printGen(gen);
80
81 ContiguousSpace eden = ((DefNewGeneration)gen).eden();
82 System.out.println("Eden Space:");
83 printSpace(eden);
84
85 ContiguousSpace from = ((DefNewGeneration)gen).from();
86 System.out.println("From Space:");
87 printSpace(from);
88
89 ContiguousSpace to = ((DefNewGeneration)gen).to();
90 System.out.println("To Space:");
91 printSpace(to);
92 } else {
93 System.out.println(gen.name() + ":");
94 printGen(gen);
95 }
96 }
97 // Perm generation
98 Generation permGen = genHeap.permGen();
99 System.out.println("Perm Generation:");
100 printGen(permGen);
101 } else if (heap instanceof ParallelScavengeHeap) {
102 ParallelScavengeHeap psh = (ParallelScavengeHeap) heap;
103 PSYoungGen youngGen = psh.youngGen();
104 printPSYoungGen(youngGen);
105
106 PSOldGen oldGen = psh.oldGen();
107 long oldFree = oldGen.capacity() - oldGen.used();
108 System.out.println("PS Old Generation");
109 printValMB("capacity = ", oldGen.capacity());
110 printValMB("used = ", oldGen.used());
111 printValMB("free = ", oldFree);
112 System.out.println(alignment + (double)oldGen.used() * 100.0 / oldGen.capacity() + "% used");
113
114 PSPermGen permGen = psh.permGen();
115 long permFree = permGen.capacity() - permGen.used();
116 System.out.println("PS Perm Generation");
117 printValMB("capacity = ", permGen.capacity());
118 printValMB("used = ", permGen.used());
119 printValMB("free = ", permFree);
120 System.out.println(alignment + (double)permGen.used() * 100.0 / permGen.capacity() + "% used");
121 } else {
122 throw new RuntimeException("unknown heap type : " + heap.getClass());
123 }
124 }
125
126 // Helper methods
127
128 private void printGCAlgorithm(Map flagMap) {
129 // print about new generation
130 long l = getFlagValue("UseParNewGC", flagMap);
131 if (l == 1L) {
132 System.out.println("using parallel threads in the new generation.");
133 }
134
135 l = getFlagValue("UseTLAB", flagMap);
136 if (l == 1L) {
137 System.out.println("using thread-local object allocation.");
138 }
139
140 l = getFlagValue("UseConcMarkSweepGC", flagMap);
141 if (l == 1L) {
142 System.out.println("Concurrent Mark-Sweep GC");
143 return;
144 }
145
146 l = getFlagValue("UseParallelGC", flagMap);
147 if (l == 1L) {
148 System.out.print("Parallel GC ");
149 l = getFlagValue("ParallelGCThreads", flagMap);
150 System.out.println("with " + l + " thread(s)");
151 return;
152 }
153
154 System.out.println("Mark Sweep Compact GC");
155 }
156
157 private void printPSYoungGen(PSYoungGen youngGen) {
158 System.out.println("PS Young Generation");
159 MutableSpace eden = youngGen.edenSpace();
160 System.out.println("Eden Space:");
161 printMutableSpace(eden);
162 MutableSpace from = youngGen.fromSpace();
163 System.out.println("From Space:");
164 printMutableSpace(from);
165 MutableSpace to = youngGen.toSpace();
166 System.out.println("To Space:");
167 printMutableSpace(to);
168 }
169
170 private void printMutableSpace(MutableSpace space) {
171 printValMB("capacity = ", space.capacity());
172 printValMB("used = ", space.used());
173 long free = space.capacity() - space.used();
174 printValMB("free = ", free);
175 System.out.println(alignment + (double)space.used() * 100.0 / space.capacity() + "% used");
176 }
177
178 private static String alignment = " ";
179
180 private void printGen(Generation gen) {
181 printValMB("capacity = ", gen.capacity());
182 printValMB("used = ", gen.used());
183 printValMB("free = ", gen.free());
184 System.out.println(alignment + (double)gen.used() * 100.0 / gen.capacity() + "% used");
185 }
186
187 private void printSpace(ContiguousSpace space) {
188 printValMB("capacity = ", space.capacity());
189 printValMB("used = ", space.used());
190 printValMB("free = ", space.free());
191 System.out.println(alignment + (double)space.used() * 100.0 / space.capacity() + "% used");
192 }
193
194 private static final double FACTOR = 1024*1024;
195 private void printValMB(String title, long value) {
196 double mb = value / FACTOR;
197 System.out.println(alignment + title + value + " (" + mb + "MB)");
198 }
199
200 private void printValue(String title, long value) {
201 System.out.println(alignment + title + value);
202 }
203
204 private long getFlagValue(String name, Map flagMap) {
205 VM.Flag f = (VM.Flag) flagMap.get(name);
206 if (f != null) {
207 if (f.isBool()) {
208 return f.getBool()? 1L : 0L;
209 } else {
210 return Long.parseLong(f.getValue());
211 }
212 } else {
213 return -1;
214 }
215 }
216 }