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comparison agent/src/share/classes/sun/jvm/hotspot/debugger/dummy/DummyAddress.java @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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1 /*
2 * Copyright 2000-2002 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.dummy;
26
27 import sun.jvm.hotspot.debugger.*;
28
29 /** For testing purposes */
30
31 class DummyAddress implements Address {
32 protected DummyDebugger debugger;
33 protected long addr;
34 private static final long badLong = 0xBAADBABEL;
35 private static final double badDouble = 1.23456;
36
37 DummyAddress(DummyDebugger debugger, long addr) {
38 this.debugger = debugger;
39 this.addr = addr;
40 }
41
42 //
43 // Basic Java routines
44 //
45
46 public boolean equals(Object arg) {
47 if (arg == null) {
48 return false;
49 }
50
51 if (!(arg instanceof DummyAddress)) {
52 return false;
53 }
54
55 return (addr == ((DummyAddress) arg).addr);
56 }
57
58 public int hashCode() {
59 // FIXME: suggestions on a better hash code?
60 return (int) addr;
61 }
62
63 public String toString() {
64 return debugger.addressToString(this);
65 }
66
67 //
68 // C/C++-related routines
69 //
70
71 public long getCIntegerAt(long offset, long numBytes, boolean isUnsigned) throws UnalignedAddressException, UnmappedAddressException {
72 return badLong;
73 }
74
75 public Address getAddressAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
76 return new DummyAddress(debugger, badLong);
77 }
78
79 //
80 // Java-related routines
81 //
82
83 public boolean getJBooleanAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
84 return false;
85 }
86
87 public byte getJByteAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
88 return (byte) badLong;
89 }
90
91 public char getJCharAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
92 return (char) badLong;
93 }
94
95 public double getJDoubleAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
96 return badDouble;
97 }
98
99 public float getJFloatAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
100 return (float) badDouble;
101 }
102
103 public int getJIntAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
104 return (int) badLong;
105 }
106
107 public long getJLongAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
108 return badLong;
109 }
110
111 public short getJShortAt(long offset) throws UnalignedAddressException, UnmappedAddressException {
112 return (short) badLong;
113 }
114
115 public OopHandle getOopHandleAt(long offset)
116 throws UnalignedAddressException, UnmappedAddressException, NotInHeapException {
117 return new DummyOopHandle(debugger, badLong);
118 }
119
120 // Mutators -- not implemented
121 public void setCIntegerAt(long offset, long numBytes, long value) {
122 throw new DebuggerException("Unimplemented");
123 }
124 public void setAddressAt(long offset, Address value) {
125 throw new DebuggerException("Unimplemented");
126 }
127 public void setJBooleanAt (long offset, boolean value)
128 throws UnmappedAddressException, UnalignedAddressException {
129 throw new DebuggerException("Unimplemented");
130 }
131 public void setJByteAt (long offset, byte value)
132 throws UnmappedAddressException, UnalignedAddressException {
133 throw new DebuggerException("Unimplemented");
134 }
135 public void setJCharAt (long offset, char value)
136 throws UnmappedAddressException, UnalignedAddressException {
137 throw new DebuggerException("Unimplemented");
138 }
139 public void setJDoubleAt (long offset, double value)
140 throws UnmappedAddressException, UnalignedAddressException {
141 throw new DebuggerException("Unimplemented");
142 }
143 public void setJFloatAt (long offset, float value)
144 throws UnmappedAddressException, UnalignedAddressException {
145 throw new DebuggerException("Unimplemented");
146 }
147 public void setJIntAt (long offset, int value)
148 throws UnmappedAddressException, UnalignedAddressException {
149 throw new DebuggerException("Unimplemented");
150 }
151 public void setJLongAt (long offset, long value)
152 throws UnmappedAddressException, UnalignedAddressException {
153 throw new DebuggerException("Unimplemented");
154 }
155 public void setJShortAt (long offset, short value)
156 throws UnmappedAddressException, UnalignedAddressException {
157 throw new DebuggerException("Unimplemented");
158 }
159 public void setOopHandleAt (long offset, OopHandle value)
160 throws UnmappedAddressException, UnalignedAddressException {
161 throw new DebuggerException("Unimplemented");
162 }
163
164 //
165 // Arithmetic operations -- necessary evil.
166 //
167
168 public Address addOffsetTo (long offset) throws UnsupportedOperationException {
169 long value = addr + offset;
170 if (value == 0) {
171 return null;
172 }
173 return new DummyAddress(debugger, value);
174 }
175
176 public OopHandle addOffsetToAsOopHandle(long offset) throws UnsupportedOperationException {
177 long value = addr + offset;
178 if (value == 0) {
179 return null;
180 }
181 return new DummyOopHandle(debugger, value);
182 }
183
184 /** (FIXME: any signed/unsigned issues? Should this work for
185 OopHandles?) */
186 public long minus(Address arg) {
187 if (arg == null) {
188 return addr;
189 }
190 return addr - ((DummyAddress) arg).addr;
191 }
192
193 // Two's complement representation.
194 // All negative numbers are larger than positive numbers.
195 // Numbers with the same sign can be compared normally.
196 // Test harness is below in main().
197
198 public boolean lessThan (Address arg) {
199 DummyAddress DummyArg = (DummyAddress) arg;
200 if ((addr >= 0) && (DummyArg.addr < 0)) {
201 return true;
202 }
203 if ((addr < 0) && (DummyArg.addr >= 0)) {
204 return false;
205 }
206 return (addr < DummyArg.addr);
207 }
208
209 public boolean lessThanOrEqual (Address arg) {
210 DummyAddress DummyArg = (DummyAddress) arg;
211 if ((addr >= 0) && (DummyArg.addr < 0)) {
212 return true;
213 }
214 if ((addr < 0) && (DummyArg.addr >= 0)) {
215 return false;
216 }
217 return (addr <= DummyArg.addr);
218 }
219
220 public boolean greaterThan (Address arg) {
221 DummyAddress DummyArg = (DummyAddress) arg;
222 if ((addr >= 0) && (DummyArg.addr < 0)) {
223 return false;
224 }
225 if ((addr < 0) && (DummyArg.addr >= 0)) {
226 return true;
227 }
228 return (addr > DummyArg.addr);
229 }
230
231 public boolean greaterThanOrEqual(Address arg) {
232 DummyAddress DummyArg = (DummyAddress) arg;
233 if ((addr >= 0) && (DummyArg.addr < 0)) {
234 return false;
235 }
236 if ((addr < 0) && (DummyArg.addr >= 0)) {
237 return true;
238 }
239 return (addr >= DummyArg.addr);
240 }
241
242 public Address andWithMask(long mask) throws UnsupportedOperationException {
243 long value = addr & mask;
244 if (value == 0) {
245 return null;
246 }
247 return new DummyAddress(debugger, value);
248 }
249
250 public Address orWithMask(long mask) throws UnsupportedOperationException {
251 long value = addr | mask;
252 if (value == 0) {
253 return null;
254 }
255 return new DummyAddress(debugger, value);
256 }
257
258 public Address xorWithMask(long mask) throws UnsupportedOperationException {
259 long value = addr ^ mask;
260 if (value == 0) {
261 return null;
262 }
263 return new DummyAddress(debugger, value);
264 }
265
266 //--------------------------------------------------------------------------------
267 // Internals only below this point
268 //
269
270 long getValue() {
271 return addr;
272 }
273
274 private static void check(boolean arg, String failMessage) {
275 if (!arg) {
276 System.err.println(failMessage + ": FAILED");
277 System.exit(1);
278 }
279 }
280
281 // Test harness
282 public static void main(String[] args) {
283 // p/n indicates whether the interior address is really positive
284 // or negative. In unsigned terms, p1 < p2 < n1 < n2.
285
286 DummyAddress p1 = new DummyAddress(null, 0x7FFFFFFFFFFFFFF0L);
287 DummyAddress p2 = (DummyAddress) p1.addOffsetTo(10);
288 DummyAddress n1 = (DummyAddress) p2.addOffsetTo(10);
289 DummyAddress n2 = (DummyAddress) n1.addOffsetTo(10);
290
291 // lessThan positive tests
292 check(p1.lessThan(p2), "lessThan 1");
293 check(p1.lessThan(n1), "lessThan 2");
294 check(p1.lessThan(n2), "lessThan 3");
295 check(p2.lessThan(n1), "lessThan 4");
296 check(p2.lessThan(n2), "lessThan 5");
297 check(n1.lessThan(n2), "lessThan 6");
298
299 // lessThan negative tests
300 check(!p1.lessThan(p1), "lessThan 7");
301 check(!p2.lessThan(p2), "lessThan 8");
302 check(!n1.lessThan(n1), "lessThan 9");
303 check(!n2.lessThan(n2), "lessThan 10");
304
305 check(!p2.lessThan(p1), "lessThan 11");
306 check(!n1.lessThan(p1), "lessThan 12");
307 check(!n2.lessThan(p1), "lessThan 13");
308 check(!n1.lessThan(p2), "lessThan 14");
309 check(!n2.lessThan(p2), "lessThan 15");
310 check(!n2.lessThan(n1), "lessThan 16");
311
312 // lessThanOrEqual positive tests
313 check(p1.lessThanOrEqual(p1), "lessThanOrEqual 1");
314 check(p2.lessThanOrEqual(p2), "lessThanOrEqual 2");
315 check(n1.lessThanOrEqual(n1), "lessThanOrEqual 3");
316 check(n2.lessThanOrEqual(n2), "lessThanOrEqual 4");
317
318 check(p1.lessThanOrEqual(p2), "lessThanOrEqual 5");
319 check(p1.lessThanOrEqual(n1), "lessThanOrEqual 6");
320 check(p1.lessThanOrEqual(n2), "lessThanOrEqual 7");
321 check(p2.lessThanOrEqual(n1), "lessThanOrEqual 8");
322 check(p2.lessThanOrEqual(n2), "lessThanOrEqual 9");
323 check(n1.lessThanOrEqual(n2), "lessThanOrEqual 10");
324
325 // lessThanOrEqual negative tests
326 check(!p2.lessThanOrEqual(p1), "lessThanOrEqual 11");
327 check(!n1.lessThanOrEqual(p1), "lessThanOrEqual 12");
328 check(!n2.lessThanOrEqual(p1), "lessThanOrEqual 13");
329 check(!n1.lessThanOrEqual(p2), "lessThanOrEqual 14");
330 check(!n2.lessThanOrEqual(p2), "lessThanOrEqual 15");
331 check(!n2.lessThanOrEqual(n1), "lessThanOrEqual 16");
332
333 // greaterThan positive tests
334 check(n2.greaterThan(p1), "greaterThan 1");
335 check(n2.greaterThan(p2), "greaterThan 2");
336 check(n2.greaterThan(n1), "greaterThan 3");
337 check(n1.greaterThan(p1), "greaterThan 4");
338 check(n1.greaterThan(p2), "greaterThan 5");
339 check(p2.greaterThan(p1), "greaterThan 6");
340
341 // greaterThan negative tests
342 check(!p1.greaterThan(p1), "greaterThan 7");
343 check(!p2.greaterThan(p2), "greaterThan 8");
344 check(!n1.greaterThan(n1), "greaterThan 9");
345 check(!n2.greaterThan(n2), "greaterThan 10");
346
347 check(!p1.greaterThan(n2), "greaterThan 11");
348 check(!p2.greaterThan(n2), "greaterThan 12");
349 check(!n1.greaterThan(n2), "greaterThan 13");
350 check(!p1.greaterThan(n1), "greaterThan 14");
351 check(!p2.greaterThan(n1), "greaterThan 15");
352 check(!p1.greaterThan(p2), "greaterThan 16");
353
354 // greaterThanOrEqual positive tests
355 check(p1.greaterThanOrEqual(p1), "greaterThanOrEqual 1");
356 check(p2.greaterThanOrEqual(p2), "greaterThanOrEqual 2");
357 check(n1.greaterThanOrEqual(n1), "greaterThanOrEqual 3");
358 check(n2.greaterThanOrEqual(n2), "greaterThanOrEqual 4");
359
360 check(n2.greaterThanOrEqual(p1), "greaterThanOrEqual 5");
361 check(n2.greaterThanOrEqual(p2), "greaterThanOrEqual 6");
362 check(n2.greaterThanOrEqual(n1), "greaterThanOrEqual 7");
363 check(n1.greaterThanOrEqual(p1), "greaterThanOrEqual 8");
364 check(n1.greaterThanOrEqual(p2), "greaterThanOrEqual 9");
365 check(p2.greaterThanOrEqual(p1), "greaterThanOrEqual 10");
366
367 // greaterThanOrEqual negative tests
368 check(!p1.greaterThanOrEqual(n2), "greaterThanOrEqual 11");
369 check(!p2.greaterThanOrEqual(n2), "greaterThanOrEqual 12");
370 check(!n1.greaterThanOrEqual(n2), "greaterThanOrEqual 13");
371 check(!p1.greaterThanOrEqual(n1), "greaterThanOrEqual 14");
372 check(!p2.greaterThanOrEqual(n1), "greaterThanOrEqual 15");
373 check(!p1.greaterThanOrEqual(p2), "greaterThanOrEqual 16");
374
375 System.err.println("DummyAddress: all tests passed successfully.");
376 }
377 }