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| 1 | /* | ||
| 2 | * Copyright (c) 1998, 2006, Oracle and/or its affiliates. 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. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | package com.sun.jdi; | ||
| 27 | import java.util.List; | ||
| 28 | |||
| 29 | /** | ||
| 30 | * A thread object from the target VM. | ||
| 31 | * A ThreadReference is an {@link ObjectReference} with additional | ||
| 32 | * access to thread-specific information from the target VM. | ||
| 33 | * | ||
| 34 | * @author Robert Field | ||
| 35 | * @author Gordon Hirsch | ||
| 36 | * @author James McIlree | ||
| 37 | * @since 1.3 | ||
| 38 | */ | ||
| 39 | public interface ThreadReference extends ObjectReference | ||
| 40 | { | ||
| 41 | /** Thread status is unknown */ | ||
| 42 | public final int THREAD_STATUS_UNKNOWN =-1; | ||
| 43 | /** Thread has completed execution */ | ||
| 44 | public final int THREAD_STATUS_ZOMBIE = 0; | ||
| 45 | /** Thread is runnable */ | ||
| 46 | public final int THREAD_STATUS_RUNNING = 1; | ||
| 47 | /** Thread is sleeping - Thread.sleep() or JVM_Sleep() was called */ | ||
| 48 | public final int THREAD_STATUS_SLEEPING = 2; | ||
| 49 | /** Thread is waiting on a java monitor */ | ||
| 50 | public final int THREAD_STATUS_MONITOR = 3; | ||
| 51 | /** Thread is waiting - Object.wait() or JVM_MonitorWait() was called */ | ||
| 52 | public final int THREAD_STATUS_WAIT = 4; | ||
| 53 | /** Thread has not yet been started */ | ||
| 54 | public final int THREAD_STATUS_NOT_STARTED = 5; | ||
| 55 | |||
| 56 | /** | ||
| 57 | * Returns the name of this thread. | ||
| 58 | * | ||
| 59 | * @return the string containing the thread name. | ||
| 60 | */ | ||
| 61 | String name(); | ||
| 62 | |||
| 63 | /** | ||
| 64 | * Suspends this thread. The thread can be resumed through | ||
| 65 | * {@link #resume} or resumed with other threads through | ||
| 66 | * {@link VirtualMachine#resume}. | ||
| 67 | * <p> | ||
| 68 | * Unlike {@link java.lang.Thread#suspend}, | ||
| 69 | * suspends of both the virtual machine and individual threads are | ||
| 70 | * counted. Before a thread will run again, it must be resumed | ||
| 71 | * (through {@link #resume} or {@link ThreadReference#resume}) | ||
| 72 | * the same number of times it has been suspended. | ||
| 73 | * <p> | ||
| 74 | * Suspending single threads with this method has the same dangers | ||
| 75 | * as {@link java.lang.Thread#suspend()}. If the suspended thread | ||
| 76 | * holds a monitor needed by another running thread, deadlock is | ||
| 77 | * possible in the target VM (at least until the suspended thread | ||
| 78 | * is resumed again). | ||
| 79 | * <p> | ||
| 80 | * The suspended thread is guaranteed to remain suspended until | ||
| 81 | * resumed through one of the JDI resume methods mentioned above; | ||
| 82 | * the application in the target VM cannot resume the suspended thread | ||
| 83 | * through {@link java.lang.Thread#resume}. | ||
| 84 | * @throws VMCannotBeModifiedException if the VirtualMachine is read-only - see {@link VirtualMachine#canBeModified()}. | ||
| 85 | */ | ||
| 86 | void suspend(); | ||
| 87 | |||
| 88 | /** | ||
| 89 | * Resumes this thread. If this thread was not previously suspended | ||
| 90 | * through {@link #suspend} or through {@link VirtualMachine#suspend}, | ||
| 91 | * or because of a SUSPEND_ALL or SUSPEND_EVENT_THREAD event, then | ||
| 92 | * invoking this method has no effect. Otherwise, the count of pending | ||
| 93 | * suspends on this thread is decremented. If it is decremented to 0, | ||
| 94 | * the thread will continue to execute. | ||
| 95 | * Note: the normal way to resume from an event related suspension is | ||
| 96 | * via {@link com.sun.jdi.event.EventSet#resume}. | ||
| 97 | * @throws VMCannotBeModifiedException if the VirtualMachine is read-only - see {@link VirtualMachine#canBeModified()}. | ||
| 98 | */ | ||
| 99 | void resume(); | ||
| 100 | |||
| 101 | /** | ||
| 102 | * Returns the number of pending suspends for this thread. See | ||
| 103 | * {@link #suspend} for an explanation of counted suspends. | ||
| 104 | * @return pending suspend count as an integer | ||
| 105 | */ | ||
| 106 | int suspendCount(); | ||
| 107 | |||
| 108 | /** | ||
| 109 | * Stops this thread with an asynchronous exception. | ||
| 110 | * A debugger thread in the target VM will stop this thread | ||
| 111 | * with the given {@link java.lang.Throwable} object. | ||
| 112 | * | ||
| 113 | * @param throwable the asynchronous exception to throw. | ||
| 114 | * @throws InvalidTypeException if <code>throwable</code> is not | ||
| 115 | * an instance of java.lang.Throwable in the target VM. | ||
| 116 | * @throws VMCannotBeModifiedException if the VirtualMachine is read-only - see {@link VirtualMachine#canBeModified()}. | ||
| 117 | * @see java.lang.Thread#stop(Throwable) | ||
| 118 | */ | ||
| 119 | void stop(ObjectReference throwable) throws InvalidTypeException; | ||
| 120 | |||
| 121 | /** | ||
| 122 | * Interrupts this thread unless the thread has been suspended by the | ||
| 123 | * debugger. | ||
| 124 | * @throws VMCannotBeModifiedException if the VirtualMachine is read-only - see {@link VirtualMachine#canBeModified()}. | ||
| 125 | * | ||
| 126 | * @see java.lang.Thread#interrupt() | ||
| 127 | */ | ||
| 128 | void interrupt(); | ||
| 129 | |||
| 130 | /** | ||
| 131 | * Returns the thread's status. If the thread is not suspended the | ||
| 132 | * thread's current status is returned. If the thread is suspended, the | ||
| 133 | * thread's status before the suspension is returned (or | ||
| 134 | * {@link #THREAD_STATUS_UNKNOWN} if this information is not available. | ||
| 135 | * {@link #isSuspended} can be used to determine if the thread has been | ||
| 136 | * suspended. | ||
| 137 | * | ||
| 138 | * @return one of | ||
| 139 | * {@link #THREAD_STATUS_UNKNOWN}, | ||
| 140 | * {@link #THREAD_STATUS_ZOMBIE}, | ||
| 141 | * {@link #THREAD_STATUS_RUNNING}, | ||
| 142 | * {@link #THREAD_STATUS_SLEEPING}, | ||
| 143 | * {@link #THREAD_STATUS_MONITOR}, | ||
| 144 | * {@link #THREAD_STATUS_WAIT}, | ||
| 145 | * {@link #THREAD_STATUS_NOT_STARTED}, | ||
| 146 | */ | ||
| 147 | int status(); | ||
| 148 | |||
| 149 | /** | ||
| 150 | * Determines whether the thread has been suspended by the | ||
| 151 | * the debugger. | ||
| 152 | * | ||
| 153 | * @return <code>true</code> if the thread is currently suspended; | ||
| 154 | * <code>false</code> otherwise. | ||
| 155 | */ | ||
| 156 | boolean isSuspended(); | ||
| 157 | |||
| 158 | /** | ||
| 159 | * Determines whether the thread is suspended at a breakpoint. | ||
| 160 | * | ||
| 161 | * @return <code>true</code> if the thread is currently stopped at | ||
| 162 | * a breakpoint; <code>false</code> otherwise. | ||
| 163 | */ | ||
| 164 | boolean isAtBreakpoint(); | ||
| 165 | |||
| 166 | /** | ||
| 167 | * Returns this thread's thread group. | ||
| 168 | * @return a {@link ThreadGroupReference} that mirrors this thread's | ||
| 169 | * thread group in the target VM. | ||
| 170 | */ | ||
| 171 | ThreadGroupReference threadGroup(); | ||
| 172 | |||
| 173 | /** | ||
| 174 | * Returns the number of stack frames in the thread's current | ||
| 175 | * call stack. | ||
| 176 | * The thread must be suspended (normally through an interruption | ||
| 177 | * to the VM) to get this information, and | ||
| 178 | * it is only valid until the thread is resumed again. | ||
| 179 | * | ||
| 180 | * @return an integer frame count | ||
| 181 | * @throws IncompatibleThreadStateException if the thread is | ||
| 182 | * not suspended in the target VM | ||
| 183 | */ | ||
| 184 | int frameCount() throws IncompatibleThreadStateException; | ||
| 185 | |||
| 186 | /** | ||
| 187 | * Returns a List containing each {@link StackFrame} in the | ||
| 188 | * thread's current call stack. | ||
| 189 | * The thread must be suspended (normally through an interruption | ||
| 190 | * to the VM) to get this information, and | ||
| 191 | * it is only valid until the thread is resumed again. | ||
| 192 | * | ||
| 193 | * @return a List of {@link StackFrame} with the current frame first | ||
| 194 | * followed by each caller's frame. | ||
| 195 | * @throws IncompatibleThreadStateException if the thread is | ||
| 196 | * not suspended in the target VM | ||
| 197 | */ | ||
| 198 | List<StackFrame> frames() throws IncompatibleThreadStateException; | ||
| 199 | |||
| 200 | /** | ||
| 201 | * Returns the {@link StackFrame} at the given index in the | ||
| 202 | * thread's current call stack. Index 0 retrieves the current | ||
| 203 | * frame; higher indices retrieve caller frames. | ||
| 204 | * The thread must be suspended (normally through an interruption | ||
| 205 | * to the VM) to get this information, and | ||
| 206 | * it is only valid until the thread is resumed again. | ||
| 207 | * | ||
| 208 | * @param index the desired frame | ||
| 209 | * @return the requested {@link StackFrame} | ||
| 210 | * @throws IncompatibleThreadStateException if the thread is | ||
| 211 | * not suspended in the target VM | ||
| 212 | * @throws java.lang.IndexOutOfBoundsException if the index is greater than | ||
| 213 | * or equal to {@link #frameCount} or is negative. | ||
| 214 | */ | ||
| 215 | StackFrame frame(int index) throws IncompatibleThreadStateException; | ||
| 216 | |||
| 217 | /** | ||
| 218 | * Returns a List containing a range of {@link StackFrame} mirrors | ||
| 219 | * from the thread's current call stack. | ||
| 220 | * The thread must be suspended (normally through an interruption | ||
| 221 | * to the VM) to get this information, and | ||
| 222 | * it is only valid until the thread is resumed again. | ||
| 223 | * | ||
| 224 | * @param start the index of the first frame to retrieve. | ||
| 225 | * Index 0 represents the current frame. | ||
| 226 | * @param length the number of frames to retrieve | ||
| 227 | * @return a List of {@link StackFrame} with the current frame first | ||
| 228 | * followed by each caller's frame. | ||
| 229 | * @throws IncompatibleThreadStateException if the thread is | ||
| 230 | * not suspended in the target VM | ||
| 231 | * @throws IndexOutOfBoundsException if the specified range is not | ||
| 232 | * within the range of stack frame indicies. | ||
| 233 | * That is, the exception is thrown if any of the following are true: | ||
| 234 | * <pre> start < 0 | ||
| 235 | * start >= {@link #frameCount} | ||
| 236 | * length < 0 | ||
| 237 | * (start+length) > {@link #frameCount}</pre> | ||
| 238 | */ | ||
| 239 | List<StackFrame> frames(int start, int length) | ||
| 240 | throws IncompatibleThreadStateException; | ||
| 241 | |||
| 242 | /** | ||
| 243 | * Returns a List containing an {@link ObjectReference} for | ||
| 244 | * each monitor owned by the thread. | ||
| 245 | * A monitor is owned by a thread if it has been entered | ||
| 246 | * (via the synchronized statement or entry into a synchronized | ||
| 247 | * method) and has not been relinquished through {@link Object#wait}. | ||
| 248 | * <p> | ||
| 249 | * Not all target virtual machines support this operation. | ||
| 250 | * Use {@link VirtualMachine#canGetOwnedMonitorInfo()} | ||
| 251 | * to determine if the operation is supported. | ||
| 252 | * | ||
| 253 | * @return a List of {@link ObjectReference} objects. The list | ||
| 254 | * has zero length if no monitors are owned by this thread. | ||
| 255 | * @throws java.lang.UnsupportedOperationException if | ||
| 256 | * the target virtual machine does not support this | ||
| 257 | * operation. | ||
| 258 | * @throws IncompatibleThreadStateException if the thread is | ||
| 259 | * not suspended in the target VM | ||
| 260 | */ | ||
| 261 | List<ObjectReference> ownedMonitors() | ||
| 262 | throws IncompatibleThreadStateException; | ||
| 263 | |||
| 264 | /** | ||
| 265 | * Returns a List containing a {@link MonitorInfo} object for | ||
| 266 | * each monitor owned by the thread. | ||
| 267 | * A monitor is owned by a thread if it has been entered | ||
| 268 | * (via the synchronized statement or entry into a synchronized | ||
| 269 | * method) and has not been relinquished through {@link Object#wait}. | ||
| 270 | * <p> | ||
| 271 | * Not all target virtual machines support this operation. | ||
| 272 | * Use {@link VirtualMachine#canGetMonitorFrameInfo()} | ||
| 273 | * to determine if the operation is supported. | ||
| 274 | * | ||
| 275 | * @return a List of {@link MonitorInfo} objects. The list | ||
| 276 | * has zero length if no monitors are owned by this thread. | ||
| 277 | * @throws java.lang.UnsupportedOperationException if | ||
| 278 | * the target virtual machine does not support this | ||
| 279 | * operation. | ||
| 280 | * @throws IncompatibleThreadStateException if the thread is | ||
| 281 | * not suspended in the target VM | ||
| 282 | * | ||
| 283 | * @since 1.6 | ||
| 284 | */ | ||
| 285 | List<MonitorInfo> ownedMonitorsAndFrames() | ||
| 286 | throws IncompatibleThreadStateException; | ||
| 287 | |||
| 288 | /** | ||
| 289 | * Returns an {@link ObjectReference} for the monitor, if any, | ||
| 290 | * for which this thread is currently waiting. | ||
| 291 | * The thread can be waiting for a monitor through entry into a | ||
| 292 | * synchronized method, the synchronized statement, or | ||
| 293 | * {@link Object#wait}. The {@link #status} method can be used | ||
| 294 | * to differentiate between the first two cases and the third. | ||
| 295 | * <p> | ||
| 296 | * Not all target virtual machines support this operation. | ||
| 297 | * Use {@link VirtualMachine#canGetCurrentContendedMonitor()} | ||
| 298 | * to determine if the operation is supported. | ||
| 299 | * | ||
| 300 | * @return the {@link ObjectReference} corresponding to the | ||
| 301 | * contended monitor, or null if it is not waiting for a monitor. | ||
| 302 | * @throws java.lang.UnsupportedOperationException if | ||
| 303 | * the target virtual machine does not support this | ||
| 304 | * operation. | ||
| 305 | * @throws IncompatibleThreadStateException if the thread is | ||
| 306 | * not suspended in the target VM | ||
| 307 | */ | ||
| 308 | ObjectReference currentContendedMonitor() throws IncompatibleThreadStateException; | ||
| 309 | |||
| 310 | /** | ||
| 311 | * Pop stack frames. | ||
| 312 | * <P> | ||
| 313 | * All frames up to and including the <CODE>frame</CODE> are | ||
| 314 | * popped off the stack. | ||
| 315 | * The frame previous to the parameter <CODE>frame</CODE> | ||
| 316 | * will become the current frame. | ||
| 317 | * <P> | ||
| 318 | * After this operation, this thread will be | ||
| 319 | * suspended at the invoke instruction of the target method | ||
| 320 | * that created <CODE>frame</CODE>. | ||
| 321 | * The <CODE>frame</CODE>'s method can be reentered with a step into | ||
| 322 | * the instruction. | ||
| 323 | * <P> | ||
| 324 | * The operand stack is restored, however, any changes | ||
| 325 | * to the arguments that occurred in the called method, remain. | ||
| 326 | * For example, if the method <CODE>foo</CODE>: | ||
| 327 | * <PRE> | ||
| 328 | * void foo(int x) { | ||
| 329 | * System.out.println("Foo: " + x); | ||
| 330 | * x = 4; | ||
| 331 | * System.out.println("pop here"); | ||
| 332 | * } | ||
| 333 | * </PRE> | ||
| 334 | * was called with <CODE>foo(7)</CODE> and <CODE>foo</CODE> | ||
| 335 | * is popped at the second <CODE>println</CODE> and resumed, | ||
| 336 | * it will print: <CODE>Foo: 4</CODE>. | ||
| 337 | * <P> | ||
| 338 | * Locks acquired by a popped frame are released when it | ||
| 339 | * is popped. This applies to synchronized methods that | ||
| 340 | * are popped, and to any synchronized blocks within them. | ||
| 341 | * <P> | ||
| 342 | * Finally blocks are not executed. | ||
| 343 | * <P> | ||
| 344 | * No aspect of state, other than this thread's execution point and | ||
| 345 | * locks, is affected by this call. Specifically, the values of | ||
| 346 | * fields are unchanged, as are external resources such as | ||
| 347 | * I/O streams. Additionally, the target program might be | ||
| 348 | * placed in a state that is impossible with normal program flow; | ||
| 349 | * for example, order of lock acquisition might be perturbed. | ||
| 350 | * Thus the target program may | ||
| 351 | * proceed differently than the user would expect. | ||
| 352 | * <P> | ||
| 353 | * The specified thread must be suspended. | ||
| 354 | * <P> | ||
| 355 | * All <code>StackFrame</code> objects for this thread are | ||
| 356 | * invalidated. | ||
| 357 | * <P> | ||
| 358 | * No events are generated by this method. | ||
| 359 | * <P> | ||
| 360 | * None of the frames through and including the frame for the caller | ||
| 361 | * of <i>frame</i> may be native. | ||
| 362 | * <P> | ||
| 363 | * Not all target virtual machines support this operation. | ||
| 364 | * Use {@link VirtualMachine#canPopFrames() VirtualMachine.canPopFrames()} | ||
| 365 | * to determine if the operation is supported. | ||
| 366 | * | ||
| 367 | * @param frame Stack frame to pop. <CODE>frame</CODE> is on this | ||
| 368 | * thread's call stack. | ||
| 369 | * | ||
| 370 | * @throws java.lang.UnsupportedOperationException if | ||
| 371 | * the target virtual machine does not support this | ||
| 372 | * operation - see | ||
| 373 | * {@link VirtualMachine#canPopFrames() VirtualMachine.canPopFrames()}. | ||
| 374 | * | ||
| 375 | * @throws IncompatibleThreadStateException if this | ||
| 376 | * thread is not suspended. | ||
| 377 | * | ||
| 378 | * @throws java.lang.IllegalArgumentException if <CODE>frame</CODE> | ||
| 379 | * is not on this thread's call stack. | ||
| 380 | * | ||
| 381 | * @throws NativeMethodException if one of the frames that would be | ||
| 382 | * popped is that of a native method or if the frame previous to | ||
| 383 | * <i>frame</i> is native. | ||
| 384 | * | ||
| 385 | * @throws InvalidStackFrameException if <CODE>frame</CODE> has become | ||
| 386 | * invalid. Once this thread is resumed, the stack frame is | ||
| 387 | * no longer valid. This exception is also thrown if there are no | ||
| 388 | * more frames. | ||
| 389 | * @throws VMCannotBeModifiedException if the VirtualMachine is read-only - see {@link VirtualMachine#canBeModified()}. | ||
| 390 | * | ||
| 391 | * @since 1.4 */ | ||
| 392 | void popFrames(StackFrame frame) throws IncompatibleThreadStateException; | ||
| 393 | |||
| 394 | |||
| 395 | /** | ||
| 396 | * Force a method to return before it reaches a return | ||
| 397 | * statement. | ||
| 398 | * <p> | ||
| 399 | * The method which will return early is referred to as the | ||
| 400 | * called method. The called method is the current method (as | ||
| 401 | * defined by the Frames section in the Java Virtual Machine | ||
| 402 | * Specification) for the specified thread at the time this | ||
| 403 | * method is called. | ||
| 404 | * <p> | ||
| 405 | * The thread must be suspended. | ||
| 406 | * The return occurs when execution of Java programming | ||
| 407 | * language code is resumed on this thread. Between the call to | ||
| 408 | * this method and resumption of thread execution, the | ||
| 409 | * state of the stack is undefined. | ||
| 410 | * <p> | ||
| 411 | * No further instructions are executed in the called | ||
| 412 | * method. Specifically, finally blocks are not executed. Note: | ||
| 413 | * this can cause inconsistent states in the application. | ||
| 414 | * <p> | ||
| 415 | * A lock acquired by calling the called method (if it is a | ||
| 416 | * synchronized method) and locks acquired by entering | ||
| 417 | * synchronized blocks within the called method are | ||
| 418 | * released. Note: this does not apply to native locks or | ||
| 419 | * java.util.concurrent.locks locks. | ||
| 420 | * <p> | ||
| 421 | * Events, such as MethodExit, are generated as they would be in | ||
| 422 | * a normal return. | ||
| 423 | * <p> | ||
| 424 | * The called method must be a non-native Java programming | ||
| 425 | * language method. Forcing return on a thread with only one | ||
| 426 | * frame on the stack causes the thread to exit when resumed. | ||
| 427 | * <p> | ||
| 428 | * The <code>value</code> argument is the value that the | ||
| 429 | * method is to return. | ||
| 430 | * If the return type of the method is void, then value must | ||
| 431 | * be a {@link VoidValue VoidValue}. | ||
| 432 | * Object values must be assignment compatible with the method return type | ||
| 433 | * (This implies that the method return type must be loaded through the | ||
| 434 | * enclosing class's class loader). Primitive values must be | ||
| 435 | * either assignment compatible with the method return type or must be | ||
| 436 | * convertible to the variable type without loss of information. | ||
| 437 | * See JLS section 5.2 for more information on assignment | ||
| 438 | * compatibility. | ||
| 439 | * <p> | ||
| 440 | * Not all target virtual machines support this operation. | ||
| 441 | * Use {@link VirtualMachine#canForceEarlyReturn()} | ||
| 442 | * to determine if the operation is supported. | ||
| 443 | * | ||
| 444 | * @param value the value the method is to return. | ||
| 445 | * | ||
| 446 | * @throws java.lang.UnsupportedOperationException if | ||
| 447 | * the target virtual machine does not support this | ||
| 448 | * operation - see | ||
| 449 | * {@link VirtualMachine#canGetInstanceInfo() canForceEarlyReturn()} | ||
| 450 | * | ||
| 451 | * @throws IncompatibleThreadStateException if this | ||
| 452 | * thread is not suspended. | ||
| 453 | * | ||
| 454 | * @throws NativeMethodException if the frame to be returned from | ||
| 455 | * is that of a native method. | ||
| 456 | * | ||
| 457 | * @throws InvalidStackFrameException if there are no frames. | ||
| 458 | * | ||
| 459 | * @throws InvalidTypeException if the value's type does not match | ||
| 460 | * the method's return type. | ||
| 461 | * | ||
| 462 | * @throws ClassNotLoadedException if the method's return type has not yet | ||
| 463 | * been loaded through the appropriate class loader. | ||
| 464 | * | ||
| 465 | * @throws VMCannotBeModifiedException if the VirtualMachine is read-only - see {@link VirtualMachine#canBeModified()}. | ||
| 466 | * | ||
| 467 | * @since 1.6 | ||
| 468 | */ | ||
| 469 | void forceEarlyReturn(Value value) throws InvalidTypeException, | ||
| 470 | ClassNotLoadedException, | ||
| 471 | IncompatibleThreadStateException; | ||
| 472 | |||
| 473 | } | ||