J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2001 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 | * @test |
| 26 | * @bug 4467564 |
| 27 | * @summary Test the popping of frames in synchronous context |
| 28 | * (that is, when stopped at an event) |
| 29 | * |
| 30 | * @author Robert Field |
| 31 | * |
| 32 | * @run build TestScaffold VMConnection TargetListener TargetAdapter |
| 33 | * @run compile -g PopSynchronousTest.java |
| 34 | * @run main PopSynchronousTest |
| 35 | */ |
| 36 | import com.sun.jdi.*; |
| 37 | import com.sun.jdi.event.*; |
| 38 | import com.sun.jdi.request.*; |
| 39 | |
| 40 | import java.util.*; |
| 41 | |
| 42 | /********** target program **********/ |
| 43 | |
| 44 | class PopSynchronousTarg { |
| 45 | static String s; |
| 46 | static PopSynchronousTarg sole; |
| 47 | |
| 48 | synchronized void a(int y, boolean w) { |
| 49 | if (y == 6 && w) { |
| 50 | s += "@"; |
| 51 | } else { |
| 52 | s += " aArgFail "; |
| 53 | } |
| 54 | } |
| 55 | String b(String h) { |
| 56 | if (h.equals("yo")) { |
| 57 | s += "["; |
| 58 | } else { |
| 59 | s += " bArgFail "; |
| 60 | } |
| 61 | a(6, true); |
| 62 | s += "]"; |
| 63 | return s; |
| 64 | } |
| 65 | long c() { |
| 66 | s += "<"; |
| 67 | synchronized (s) { |
| 68 | b("yo"); |
| 69 | } |
| 70 | s += ">"; |
| 71 | return 17; |
| 72 | } |
| 73 | static void p() { |
| 74 | s += "("; |
| 75 | if (sole.c() != 17) { |
| 76 | s += " cReturnFail "; |
| 77 | } |
| 78 | s += ")"; |
| 79 | } |
| 80 | static void report() { |
| 81 | } |
| 82 | public static void main(String[] args){ |
| 83 | s = new String(); |
| 84 | sole = new PopSynchronousTarg(); |
| 85 | for (int i = 0; i < 100; ++i) { |
| 86 | p(); |
| 87 | // System.out.println(s); |
| 88 | report(); |
| 89 | } |
| 90 | } |
| 91 | } |
| 92 | |
| 93 | /********** test program **********/ |
| 94 | |
| 95 | public class PopSynchronousTest extends TestScaffold { |
| 96 | ReferenceType targetClass; |
| 97 | ThreadReference mainThread; |
| 98 | int stateIndex = 0; |
| 99 | String expected = ""; |
| 100 | static final String[] calls = {"a", "b", "c", "p", "main"}; |
| 101 | static final int popMax = calls.length - 1; |
| 102 | static final String[] states = |
| 103 | {"main-i", "p-e", "p-i", "c-e", "c-i", "b-e", "b-i", "a-e", "a-l", "b-l", "c-l", "p-l", "main-r", "report-e"}; |
| 104 | static final String[] output = |
| 105 | {"", "", "(", "", "<", "", "[", "", "@", "]", ">", ")", "", ""}; |
| 106 | |
| 107 | |
| 108 | PopSynchronousTest (String args[]) { |
| 109 | super(args); |
| 110 | } |
| 111 | |
| 112 | public static void main(String[] args) throws Exception { |
| 113 | new PopSynchronousTest(args).startTests(); |
| 114 | } |
| 115 | |
| 116 | |
| 117 | /********** test assist **********/ |
| 118 | |
| 119 | StackFrame frameFor(String methodName) throws Exception { |
| 120 | Iterator it = mainThread.frames().iterator(); |
| 121 | |
| 122 | while (it.hasNext()) { |
| 123 | StackFrame frame = (StackFrame)it.next(); |
| 124 | if (frame.location().method().name().equals(methodName)) { |
| 125 | return frame; |
| 126 | } |
| 127 | } |
| 128 | failure("FAIL: " + methodName + " not on stack"); |
| 129 | return null; |
| 130 | } |
| 131 | |
| 132 | String actual() throws Exception { |
| 133 | Field field = targetClass.fieldByName("s"); |
| 134 | StringReference sr = (StringReference)(targetClass.getValue(field)); |
| 135 | return sr.value(); |
| 136 | } |
| 137 | |
| 138 | void checkExpected() throws Exception { |
| 139 | if (!actual().equals(expected)) { |
| 140 | failure("FAIL: expected value: " + expected + |
| 141 | " got: " + actual()); |
| 142 | } |
| 143 | } |
| 144 | |
| 145 | int methodIndex(String methodName) { |
| 146 | for (int i = 0; i < popMax; ++i) { |
| 147 | if (methodName.equals(calls[i])) { |
| 148 | return i; |
| 149 | } |
| 150 | } |
| 151 | return -1; |
| 152 | } |
| 153 | |
| 154 | boolean isTop(String methodName) throws Exception { |
| 155 | return mainThread.frame(0).location().method().name().equals(methodName); |
| 156 | } |
| 157 | |
| 158 | void checkTop(String methodName, boolean atStart) throws Exception { |
| 159 | Location loc = mainThread.frame(0).location(); |
| 160 | Method meth = loc.method(); |
| 161 | String name = meth.name(); |
| 162 | if (!isTop(methodName)) { |
| 163 | failure("FAIL: expected " + methodName + |
| 164 | " at top of stack, instead: " + name); |
| 165 | } else if ((meth.location().codeIndex() == loc.codeIndex()) != atStart) { |
| 166 | failure("FAIL: not at expect position: " + loc.codeIndex()); |
| 167 | } |
| 168 | } |
| 169 | |
| 170 | void checkState() throws Exception { |
| 171 | String name = states[stateIndex]; |
| 172 | int dash = name.indexOf('-'); |
| 173 | String methodName = name.substring(0,dash); |
| 174 | String posName = name.substring(dash+1); |
| 175 | checkTop(methodName, posName.equals("e")); |
| 176 | checkExpected(); |
| 177 | } |
| 178 | |
| 179 | void incrementState() { |
| 180 | stateIndex = (stateIndex + 1) % (states.length); |
| 181 | } |
| 182 | |
| 183 | void resetState(String stateName) { |
| 184 | for (int i=0; i < states.length; ++i) { |
| 185 | if (states[i].equals(stateName)) { |
| 186 | stateIndex = i; |
| 187 | return; |
| 188 | } |
| 189 | } |
| 190 | failure("TEST FAILURE: cannot find state: " + stateName); |
| 191 | } |
| 192 | |
| 193 | void resetExpected() throws Exception { |
| 194 | println("Current value: " + actual()); |
| 195 | Field field = targetClass.fieldByName("s"); |
| 196 | expected = ""; |
| 197 | ((ClassType)targetClass).setValue(field, vm().mirrorOf(expected)); |
| 198 | } |
| 199 | |
| 200 | void stateTo(String stateName) { |
| 201 | do { |
| 202 | incrementState(); |
| 203 | expected += output[stateIndex]; |
| 204 | } while(!states[stateIndex].equals(stateName)); |
| 205 | } |
| 206 | |
| 207 | void resumeTo(String methodName) throws Exception { |
| 208 | List meths = targetClass.methodsByName(methodName); |
| 209 | Method meth = (Method)(meths.get(0)); |
| 210 | resumeTo(meth.location()); |
| 211 | stateTo(methodName + "-e"); |
| 212 | checkState(); |
| 213 | } |
| 214 | |
| 215 | void pop(String methodName) throws Exception { |
| 216 | mainThread.popFrames(frameFor(methodName)); |
| 217 | resetState(methodName + "-e"); |
| 218 | --stateIndex; |
| 219 | checkState(); |
| 220 | } |
| 221 | |
| 222 | void reenter(String methodName) throws Exception { |
| 223 | pop(methodName); |
| 224 | stepIntoInstruction(mainThread); |
| 225 | incrementState(); |
| 226 | checkState(); |
| 227 | } |
| 228 | |
| 229 | /********** test core **********/ |
| 230 | |
| 231 | protected void runTests() throws Exception { |
| 232 | /* |
| 233 | * Get to the top of main() |
| 234 | * to determine targetClass and mainThread |
| 235 | */ |
| 236 | BreakpointEvent bpe = startToMain("PopSynchronousTarg"); |
| 237 | targetClass = bpe.location().declaringType(); |
| 238 | mainThread = bpe.thread(); |
| 239 | |
| 240 | /* |
| 241 | * Testing |
| 242 | */ |
| 243 | |
| 244 | /* individual tests */ |
| 245 | for (int i = 0; i < popMax; ++i) { |
| 246 | String from = calls[i]; |
| 247 | for (int j = i; j < popMax; ++j) { |
| 248 | String to = calls[j]; |
| 249 | String prev = calls[j+1]; |
| 250 | println("TEST pop from '" + from + "' to '" + to + "'"); |
| 251 | resumeTo(from); |
| 252 | reenter(to); |
| 253 | resumeTo("report"); |
| 254 | resetExpected(); |
| 255 | } |
| 256 | } |
| 257 | |
| 258 | /* sequential tests */ |
| 259 | |
| 260 | println("TEST pop a b c p"); |
| 261 | resumeTo("a"); |
| 262 | pop("a"); |
| 263 | pop("b"); |
| 264 | pop("c"); |
| 265 | pop("p"); |
| 266 | resumeTo("report"); |
| 267 | resetExpected(); |
| 268 | |
| 269 | println("TEST pop a c p"); |
| 270 | resumeTo("a"); |
| 271 | pop("a"); |
| 272 | pop("c"); |
| 273 | pop("p"); |
| 274 | resumeTo("report"); |
| 275 | resetExpected(); |
| 276 | |
| 277 | println("TEST stress a"); |
| 278 | resumeTo("a"); |
| 279 | for (int i = 0; i < 100; ++i) { |
| 280 | reenter("a"); |
| 281 | } |
| 282 | resumeTo("report"); |
| 283 | resetExpected(); |
| 284 | |
| 285 | println("TEST stress c"); |
| 286 | resumeTo("c"); |
| 287 | for (int i = 0; i < 100; ++i) { |
| 288 | reenter("c"); |
| 289 | } |
| 290 | resumeTo("report"); |
| 291 | resetExpected(); |
| 292 | |
| 293 | /* |
| 294 | * we are done, get rid of target |
| 295 | */ |
| 296 | vm().dispose(); |
| 297 | |
| 298 | /* |
| 299 | * deal with results of test |
| 300 | * if anything has called failure("foo") testFailed will be true |
| 301 | */ |
| 302 | if (!testFailed) { |
| 303 | println("PopSynchronousTest: passed"); |
| 304 | } else { |
| 305 | throw new Exception("PopSynchronousTest: failed"); |
| 306 | } |
| 307 | } |
| 308 | } |