Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/debugger/linux/LinuxAddress.java @ 113:ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
Summary: Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv
Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold
author | coleenp |
---|---|
date | Sun, 13 Apr 2008 17:43:42 -0400 |
parents | a61af66fc99e |
children | d1605aabd0a1 |
rev | line source |
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0 | 1 /* |
2 * Copyright 2002 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.debugger.linux; | |
26 | |
27 import sun.jvm.hotspot.debugger.*; | |
28 | |
29 class LinuxAddress implements Address { | |
30 protected LinuxDebugger debugger; | |
31 protected long addr; | |
32 | |
33 LinuxAddress(LinuxDebugger debugger, long addr) { | |
34 this.debugger = debugger; | |
35 this.addr = addr; | |
36 } | |
37 | |
38 // | |
39 // Basic Java routines | |
40 // | |
41 | |
42 public boolean equals(Object arg) { | |
43 if (arg == null) { | |
44 return false; | |
45 } | |
46 | |
47 if (!(arg instanceof LinuxAddress)) { | |
48 return false; | |
49 } | |
50 | |
51 return (addr == ((LinuxAddress) arg).addr); | |
52 } | |
53 | |
54 public int hashCode() { | |
55 // FIXME: suggestions on a better hash code? | |
56 return (int) addr; | |
57 } | |
58 | |
59 public String toString() { | |
60 return debugger.addressValueToString(addr); | |
61 } | |
62 | |
63 // | |
64 // C/C++-related routines | |
65 // | |
66 | |
67 public long getCIntegerAt(long offset, long numBytes, boolean isUnsigned) | |
68 throws UnalignedAddressException, UnmappedAddressException { | |
69 return debugger.readCInteger(addr + offset, numBytes, isUnsigned); | |
70 } | |
71 | |
72 public Address getAddressAt(long offset) | |
73 throws UnalignedAddressException, UnmappedAddressException { | |
74 return debugger.readAddress(addr + offset); | |
75 } | |
76 | |
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77 public Address getCompOopAddressAt(long offset) |
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78 throws UnalignedAddressException, UnmappedAddressException { |
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79 return debugger.readCompOopAddress(addr + offset); |
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80 } |
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81 |
0 | 82 // |
83 // Java-related routines | |
84 // | |
85 | |
86 public boolean getJBooleanAt(long offset) throws UnalignedAddressException, UnmappedAddressException { | |
87 return debugger.readJBoolean(addr + offset); | |
88 } | |
89 | |
90 public byte getJByteAt(long offset) throws UnalignedAddressException, UnmappedAddressException { | |
91 return debugger.readJByte(addr + offset); | |
92 } | |
93 | |
94 public char getJCharAt(long offset) throws UnalignedAddressException, UnmappedAddressException { | |
95 return debugger.readJChar(addr + offset); | |
96 } | |
97 | |
98 public double getJDoubleAt(long offset) throws UnalignedAddressException, UnmappedAddressException { | |
99 return debugger.readJDouble(addr + offset); | |
100 } | |
101 | |
102 public float getJFloatAt(long offset) throws UnalignedAddressException, UnmappedAddressException { | |
103 return debugger.readJFloat(addr + offset); | |
104 } | |
105 | |
106 public int getJIntAt(long offset) throws UnalignedAddressException, UnmappedAddressException { | |
107 return debugger.readJInt(addr + offset); | |
108 } | |
109 | |
110 public long getJLongAt(long offset) throws UnalignedAddressException, UnmappedAddressException { | |
111 return debugger.readJLong(addr + offset); | |
112 } | |
113 | |
114 public short getJShortAt(long offset) throws UnalignedAddressException, UnmappedAddressException { | |
115 return debugger.readJShort(addr + offset); | |
116 } | |
117 | |
118 public OopHandle getOopHandleAt(long offset) | |
119 throws UnalignedAddressException, UnmappedAddressException, NotInHeapException { | |
120 return debugger.readOopHandle(addr + offset); | |
121 } | |
122 | |
113
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123 public OopHandle getCompOopHandleAt(long offset) |
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124 throws UnalignedAddressException, UnmappedAddressException, NotInHeapException { |
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125 return debugger.readCompOopHandle(addr + offset); |
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126 } |
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127 |
0 | 128 // Mutators -- not implemented for now (FIXME) |
129 public void setCIntegerAt(long offset, long numBytes, long value) { | |
130 throw new DebuggerException("Unimplemented"); | |
131 } | |
132 public void setAddressAt(long offset, Address value) { | |
133 throw new DebuggerException("Unimplemented"); | |
134 } | |
135 public void setJBooleanAt (long offset, boolean value) | |
136 throws UnmappedAddressException, UnalignedAddressException { | |
137 throw new DebuggerException("Unimplemented"); | |
138 } | |
139 public void setJByteAt (long offset, byte value) | |
140 throws UnmappedAddressException, UnalignedAddressException { | |
141 throw new DebuggerException("Unimplemented"); | |
142 } | |
143 public void setJCharAt (long offset, char value) | |
144 throws UnmappedAddressException, UnalignedAddressException { | |
145 throw new DebuggerException("Unimplemented"); | |
146 } | |
147 public void setJDoubleAt (long offset, double value) | |
148 throws UnmappedAddressException, UnalignedAddressException { | |
149 throw new DebuggerException("Unimplemented"); | |
150 } | |
151 public void setJFloatAt (long offset, float value) | |
152 throws UnmappedAddressException, UnalignedAddressException { | |
153 throw new DebuggerException("Unimplemented"); | |
154 } | |
155 public void setJIntAt (long offset, int value) | |
156 throws UnmappedAddressException, UnalignedAddressException { | |
157 throw new DebuggerException("Unimplemented"); | |
158 } | |
159 public void setJLongAt (long offset, long value) | |
160 throws UnmappedAddressException, UnalignedAddressException { | |
161 throw new DebuggerException("Unimplemented"); | |
162 } | |
163 public void setJShortAt (long offset, short value) | |
164 throws UnmappedAddressException, UnalignedAddressException { | |
165 throw new DebuggerException("Unimplemented"); | |
166 } | |
167 public void setOopHandleAt (long offset, OopHandle value) | |
168 throws UnmappedAddressException, UnalignedAddressException { | |
169 throw new DebuggerException("Unimplemented"); | |
170 } | |
171 | |
172 // | |
173 // Arithmetic operations -- necessary evil. | |
174 // | |
175 | |
176 public Address addOffsetTo (long offset) throws UnsupportedOperationException { | |
177 long value = addr + offset; | |
178 if (value == 0) { | |
179 return null; | |
180 } | |
181 return new LinuxAddress(debugger, value); | |
182 } | |
183 | |
184 public OopHandle addOffsetToAsOopHandle(long offset) throws UnsupportedOperationException { | |
185 long value = addr + offset; | |
186 if (value == 0) { | |
187 return null; | |
188 } | |
189 return new LinuxOopHandle(debugger, value); | |
190 } | |
191 | |
192 /** (FIXME: any signed/unsigned issues? Should this work for | |
193 OopHandles?) */ | |
194 public long minus(Address arg) { | |
195 if (arg == null) { | |
196 return addr; | |
197 } | |
198 return addr - ((LinuxAddress) arg).addr; | |
199 } | |
200 | |
201 // Two's complement representation. | |
202 // All negative numbers are larger than positive numbers. | |
203 // Numbers with the same sign can be compared normally. | |
204 // Test harness is below in main(). | |
205 | |
206 public boolean lessThan (Address a) { | |
207 if (a == null) { | |
208 return false; | |
209 } | |
210 LinuxAddress arg = (LinuxAddress) a; | |
211 if ((addr >= 0) && (arg.addr < 0)) { | |
212 return true; | |
213 } | |
214 if ((addr < 0) && (arg.addr >= 0)) { | |
215 return false; | |
216 } | |
217 return (addr < arg.addr); | |
218 } | |
219 | |
220 public boolean lessThanOrEqual (Address a) { | |
221 if (a == null) { | |
222 return false; | |
223 } | |
224 LinuxAddress arg = (LinuxAddress) a; | |
225 if ((addr >= 0) && (arg.addr < 0)) { | |
226 return true; | |
227 } | |
228 if ((addr < 0) && (arg.addr >= 0)) { | |
229 return false; | |
230 } | |
231 return (addr <= arg.addr); | |
232 } | |
233 | |
234 public boolean greaterThan (Address a) { | |
235 if (a == null) { | |
236 return true; | |
237 } | |
238 LinuxAddress arg = (LinuxAddress) a; | |
239 if ((addr >= 0) && (arg.addr < 0)) { | |
240 return false; | |
241 } | |
242 if ((addr < 0) && (arg.addr >= 0)) { | |
243 return true; | |
244 } | |
245 return (addr > arg.addr); | |
246 } | |
247 | |
248 public boolean greaterThanOrEqual(Address a) { | |
249 if (a == null) { | |
250 return true; | |
251 } | |
252 LinuxAddress arg = (LinuxAddress) a; | |
253 if ((addr >= 0) && (arg.addr < 0)) { | |
254 return false; | |
255 } | |
256 if ((addr < 0) && (arg.addr >= 0)) { | |
257 return true; | |
258 } | |
259 return (addr >= arg.addr); | |
260 } | |
261 | |
262 public Address andWithMask(long mask) throws UnsupportedOperationException { | |
263 long value = addr & mask; | |
264 if (value == 0) { | |
265 return null; | |
266 } | |
267 return new LinuxAddress(debugger, value); | |
268 } | |
269 | |
270 public Address orWithMask(long mask) throws UnsupportedOperationException { | |
271 long value = addr | mask; | |
272 if (value == 0) { | |
273 return null; | |
274 } | |
275 return new LinuxAddress(debugger, value); | |
276 } | |
277 | |
278 public Address xorWithMask(long mask) throws UnsupportedOperationException { | |
279 long value = addr ^ mask; | |
280 if (value == 0) { | |
281 return null; | |
282 } | |
283 return new LinuxAddress(debugger, value); | |
284 } | |
285 | |
286 | |
287 //-------------------------------------------------------------------------------- | |
288 // Internals only below this point | |
289 // | |
290 | |
291 long getValue() { | |
292 return addr; | |
293 } | |
294 | |
295 | |
296 private static void check(boolean arg, String failMessage) { | |
297 if (!arg) { | |
298 System.err.println(failMessage + ": FAILED"); | |
299 System.exit(1); | |
300 } | |
301 } | |
302 | |
303 // Test harness | |
304 public static void main(String[] args) { | |
305 // p/n indicates whether the interior address is really positive | |
306 // or negative. In unsigned terms, p1 < p2 < n1 < n2. | |
307 | |
308 LinuxAddress p1 = new LinuxAddress(null, 0x7FFFFFFFFFFFFFF0L); | |
309 LinuxAddress p2 = (LinuxAddress) p1.addOffsetTo(10); | |
310 LinuxAddress n1 = (LinuxAddress) p2.addOffsetTo(10); | |
311 LinuxAddress n2 = (LinuxAddress) n1.addOffsetTo(10); | |
312 | |
313 // lessThan positive tests | |
314 check(p1.lessThan(p2), "lessThan 1"); | |
315 check(p1.lessThan(n1), "lessThan 2"); | |
316 check(p1.lessThan(n2), "lessThan 3"); | |
317 check(p2.lessThan(n1), "lessThan 4"); | |
318 check(p2.lessThan(n2), "lessThan 5"); | |
319 check(n1.lessThan(n2), "lessThan 6"); | |
320 | |
321 // lessThan negative tests | |
322 check(!p1.lessThan(p1), "lessThan 7"); | |
323 check(!p2.lessThan(p2), "lessThan 8"); | |
324 check(!n1.lessThan(n1), "lessThan 9"); | |
325 check(!n2.lessThan(n2), "lessThan 10"); | |
326 | |
327 check(!p2.lessThan(p1), "lessThan 11"); | |
328 check(!n1.lessThan(p1), "lessThan 12"); | |
329 check(!n2.lessThan(p1), "lessThan 13"); | |
330 check(!n1.lessThan(p2), "lessThan 14"); | |
331 check(!n2.lessThan(p2), "lessThan 15"); | |
332 check(!n2.lessThan(n1), "lessThan 16"); | |
333 | |
334 // lessThanOrEqual positive tests | |
335 check(p1.lessThanOrEqual(p1), "lessThanOrEqual 1"); | |
336 check(p2.lessThanOrEqual(p2), "lessThanOrEqual 2"); | |
337 check(n1.lessThanOrEqual(n1), "lessThanOrEqual 3"); | |
338 check(n2.lessThanOrEqual(n2), "lessThanOrEqual 4"); | |
339 | |
340 check(p1.lessThanOrEqual(p2), "lessThanOrEqual 5"); | |
341 check(p1.lessThanOrEqual(n1), "lessThanOrEqual 6"); | |
342 check(p1.lessThanOrEqual(n2), "lessThanOrEqual 7"); | |
343 check(p2.lessThanOrEqual(n1), "lessThanOrEqual 8"); | |
344 check(p2.lessThanOrEqual(n2), "lessThanOrEqual 9"); | |
345 check(n1.lessThanOrEqual(n2), "lessThanOrEqual 10"); | |
346 | |
347 // lessThanOrEqual negative tests | |
348 check(!p2.lessThanOrEqual(p1), "lessThanOrEqual 11"); | |
349 check(!n1.lessThanOrEqual(p1), "lessThanOrEqual 12"); | |
350 check(!n2.lessThanOrEqual(p1), "lessThanOrEqual 13"); | |
351 check(!n1.lessThanOrEqual(p2), "lessThanOrEqual 14"); | |
352 check(!n2.lessThanOrEqual(p2), "lessThanOrEqual 15"); | |
353 check(!n2.lessThanOrEqual(n1), "lessThanOrEqual 16"); | |
354 | |
355 // greaterThan positive tests | |
356 check(n2.greaterThan(p1), "greaterThan 1"); | |
357 check(n2.greaterThan(p2), "greaterThan 2"); | |
358 check(n2.greaterThan(n1), "greaterThan 3"); | |
359 check(n1.greaterThan(p1), "greaterThan 4"); | |
360 check(n1.greaterThan(p2), "greaterThan 5"); | |
361 check(p2.greaterThan(p1), "greaterThan 6"); | |
362 | |
363 // greaterThan negative tests | |
364 check(!p1.greaterThan(p1), "greaterThan 7"); | |
365 check(!p2.greaterThan(p2), "greaterThan 8"); | |
366 check(!n1.greaterThan(n1), "greaterThan 9"); | |
367 check(!n2.greaterThan(n2), "greaterThan 10"); | |
368 | |
369 check(!p1.greaterThan(n2), "greaterThan 11"); | |
370 check(!p2.greaterThan(n2), "greaterThan 12"); | |
371 check(!n1.greaterThan(n2), "greaterThan 13"); | |
372 check(!p1.greaterThan(n1), "greaterThan 14"); | |
373 check(!p2.greaterThan(n1), "greaterThan 15"); | |
374 check(!p1.greaterThan(p2), "greaterThan 16"); | |
375 | |
376 // greaterThanOrEqual positive tests | |
377 check(p1.greaterThanOrEqual(p1), "greaterThanOrEqual 1"); | |
378 check(p2.greaterThanOrEqual(p2), "greaterThanOrEqual 2"); | |
379 check(n1.greaterThanOrEqual(n1), "greaterThanOrEqual 3"); | |
380 check(n2.greaterThanOrEqual(n2), "greaterThanOrEqual 4"); | |
381 | |
382 check(n2.greaterThanOrEqual(p1), "greaterThanOrEqual 5"); | |
383 check(n2.greaterThanOrEqual(p2), "greaterThanOrEqual 6"); | |
384 check(n2.greaterThanOrEqual(n1), "greaterThanOrEqual 7"); | |
385 check(n1.greaterThanOrEqual(p1), "greaterThanOrEqual 8"); | |
386 check(n1.greaterThanOrEqual(p2), "greaterThanOrEqual 9"); | |
387 check(p2.greaterThanOrEqual(p1), "greaterThanOrEqual 10"); | |
388 | |
389 // greaterThanOrEqual negative tests | |
390 check(!p1.greaterThanOrEqual(n2), "greaterThanOrEqual 11"); | |
391 check(!p2.greaterThanOrEqual(n2), "greaterThanOrEqual 12"); | |
392 check(!n1.greaterThanOrEqual(n2), "greaterThanOrEqual 13"); | |
393 check(!p1.greaterThanOrEqual(n1), "greaterThanOrEqual 14"); | |
394 check(!p2.greaterThanOrEqual(n1), "greaterThanOrEqual 15"); | |
395 check(!p1.greaterThanOrEqual(p2), "greaterThanOrEqual 16"); | |
396 | |
397 System.err.println("LinuxAddress: all tests passed successfully."); | |
398 } | |
399 } |