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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 | +} | |