J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1998-2007 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | #include "util.h" |
| 27 | #include "invoker.h" |
| 28 | #include "eventHandler.h" |
| 29 | #include "threadControl.h" |
| 30 | #include "outStream.h" |
| 31 | |
| 32 | static jrawMonitorID invokerLock; |
| 33 | |
| 34 | void |
| 35 | invoker_initialize(void) |
| 36 | { |
| 37 | invokerLock = debugMonitorCreate("JDWP Invocation Lock"); |
| 38 | } |
| 39 | |
| 40 | void |
| 41 | invoker_reset(void) |
| 42 | { |
| 43 | } |
| 44 | |
| 45 | void invoker_lock(void) |
| 46 | { |
| 47 | debugMonitorEnter(invokerLock); |
| 48 | } |
| 49 | |
| 50 | void invoker_unlock(void) |
| 51 | { |
| 52 | debugMonitorExit(invokerLock); |
| 53 | } |
| 54 | |
| 55 | static jbyte |
| 56 | returnTypeTag(char *signature) |
| 57 | { |
| 58 | char *tagPtr = strchr(signature, SIGNATURE_END_ARGS); |
| 59 | JDI_ASSERT(tagPtr); |
| 60 | tagPtr++; /* 1st character after the end of args */ |
| 61 | return (jbyte)*tagPtr; |
| 62 | } |
| 63 | |
| 64 | static jbyte |
| 65 | nextArgumentTypeTag(void **cursor) |
| 66 | { |
| 67 | char *tagPtr = *cursor; |
| 68 | jbyte argumentTag = (jbyte)*tagPtr; |
| 69 | |
| 70 | if (*tagPtr != SIGNATURE_END_ARGS) { |
| 71 | /* Skip any array modifiers */ |
| 72 | while (*tagPtr == JDWP_TAG(ARRAY)) { |
| 73 | tagPtr++; |
| 74 | } |
| 75 | /* Skip class name */ |
| 76 | if (*tagPtr == JDWP_TAG(OBJECT)) { |
| 77 | tagPtr = strchr(tagPtr, SIGNATURE_END_CLASS) + 1; |
| 78 | JDI_ASSERT(tagPtr); |
| 79 | } else { |
| 80 | /* Skip primitive sig */ |
| 81 | tagPtr++; |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | *cursor = tagPtr; |
| 86 | return argumentTag; |
| 87 | } |
| 88 | |
| 89 | static jbyte |
| 90 | firstArgumentTypeTag(char *signature, void **cursor) |
| 91 | { |
| 92 | JDI_ASSERT(signature[0] == SIGNATURE_BEGIN_ARGS); |
| 93 | *cursor = signature + 1; /* skip to the first arg */ |
| 94 | return nextArgumentTypeTag(cursor); |
| 95 | } |
| 96 | |
| 97 | |
| 98 | /* |
| 99 | * Note: argument refs may be destroyed on out-of-memory error |
| 100 | */ |
| 101 | static jvmtiError |
| 102 | createGlobalRefs(JNIEnv *env, InvokeRequest *request) |
| 103 | { |
| 104 | jvmtiError error; |
| 105 | jclass clazz = NULL; |
| 106 | jobject instance = NULL; |
| 107 | jint argIndex; |
| 108 | jbyte argumentTag; |
| 109 | jvalue *argument; |
| 110 | void *cursor; |
| 111 | jobject *argRefs = NULL; |
| 112 | |
| 113 | error = JVMTI_ERROR_NONE; |
| 114 | |
| 115 | if ( request->argumentCount > 0 ) { |
| 116 | /*LINTED*/ |
| 117 | argRefs = jvmtiAllocate((jint)(request->argumentCount*sizeof(jobject))); |
| 118 | if ( argRefs==NULL ) { |
| 119 | error = AGENT_ERROR_OUT_OF_MEMORY; |
| 120 | } else { |
| 121 | /*LINTED*/ |
| 122 | (void)memset(argRefs, 0, request->argumentCount*sizeof(jobject)); |
| 123 | } |
| 124 | } |
| 125 | |
| 126 | if ( error == JVMTI_ERROR_NONE ) { |
| 127 | saveGlobalRef(env, request->clazz, &clazz); |
| 128 | if (clazz == NULL) { |
| 129 | error = AGENT_ERROR_OUT_OF_MEMORY; |
| 130 | } |
| 131 | } |
| 132 | |
| 133 | if ( error == JVMTI_ERROR_NONE && request->instance != NULL ) { |
| 134 | saveGlobalRef(env, request->instance, &instance); |
| 135 | if (instance == NULL) { |
| 136 | error = AGENT_ERROR_OUT_OF_MEMORY; |
| 137 | } |
| 138 | } |
| 139 | |
| 140 | if ( error == JVMTI_ERROR_NONE && argRefs!=NULL ) { |
| 141 | argIndex = 0; |
| 142 | argumentTag = firstArgumentTypeTag(request->methodSignature, &cursor); |
| 143 | argument = request->arguments; |
| 144 | while (argumentTag != SIGNATURE_END_ARGS) { |
| 145 | if ( argIndex > request->argumentCount ) { |
| 146 | break; |
| 147 | } |
| 148 | if ((argumentTag == JDWP_TAG(OBJECT)) || |
| 149 | (argumentTag == JDWP_TAG(ARRAY))) { |
| 150 | /* Create a global ref for any non-null argument */ |
| 151 | if (argument->l != NULL) { |
| 152 | saveGlobalRef(env, argument->l, &argRefs[argIndex]); |
| 153 | if (argRefs[argIndex] == NULL) { |
| 154 | error = AGENT_ERROR_OUT_OF_MEMORY; |
| 155 | break; |
| 156 | } |
| 157 | } |
| 158 | } |
| 159 | argument++; |
| 160 | argIndex++; |
| 161 | argumentTag = nextArgumentTypeTag(&cursor); |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | #ifdef FIXUP /* Why isn't this an error? */ |
| 166 | /* Make sure the argument count matches */ |
| 167 | if ( error == JVMTI_ERROR_NONE && argIndex != request->argumentCount ) { |
| 168 | error = AGENT_ERROR_INVALID_COUNT; |
| 169 | } |
| 170 | #endif |
| 171 | |
| 172 | /* Finally, put the global refs into the request if no errors */ |
| 173 | if ( error == JVMTI_ERROR_NONE ) { |
| 174 | request->clazz = clazz; |
| 175 | request->instance = instance; |
| 176 | if ( argRefs!=NULL ) { |
| 177 | argIndex = 0; |
| 178 | argumentTag = firstArgumentTypeTag(request->methodSignature, &cursor); |
| 179 | argument = request->arguments; |
| 180 | while ( argIndex < request->argumentCount ) { |
| 181 | if ((argumentTag == JDWP_TAG(OBJECT)) || |
| 182 | (argumentTag == JDWP_TAG(ARRAY))) { |
| 183 | argument->l = argRefs[argIndex]; |
| 184 | } |
| 185 | argument++; |
| 186 | argIndex++; |
| 187 | argumentTag = nextArgumentTypeTag(&cursor); |
| 188 | } |
| 189 | jvmtiDeallocate(argRefs); |
| 190 | } |
| 191 | return JVMTI_ERROR_NONE; |
| 192 | |
| 193 | } else { |
| 194 | /* Delete global references */ |
| 195 | if ( clazz != NULL ) { |
| 196 | tossGlobalRef(env, &clazz); |
| 197 | } |
| 198 | if ( instance != NULL ) { |
| 199 | tossGlobalRef(env, &instance); |
| 200 | } |
| 201 | if ( argRefs!=NULL ) { |
| 202 | for ( argIndex=0; argIndex < request->argumentCount; argIndex++ ) { |
| 203 | if ( argRefs[argIndex] != NULL ) { |
| 204 | tossGlobalRef(env, &argRefs[argIndex]); |
| 205 | } |
| 206 | } |
| 207 | jvmtiDeallocate(argRefs); |
| 208 | } |
| 209 | } |
| 210 | |
| 211 | return error; |
| 212 | } |
| 213 | |
| 214 | static jvmtiError |
| 215 | fillInvokeRequest(JNIEnv *env, InvokeRequest *request, |
| 216 | jbyte invokeType, jbyte options, jint id, |
| 217 | jthread thread, jclass clazz, jmethodID method, |
| 218 | jobject instance, |
| 219 | jvalue *arguments, jint argumentCount) |
| 220 | { |
| 221 | jvmtiError error; |
| 222 | if (!request->available) { |
| 223 | /* |
| 224 | * Thread is not at a point where it can invoke. |
| 225 | */ |
| 226 | return AGENT_ERROR_INVALID_THREAD; |
| 227 | } |
| 228 | if (request->pending) { |
| 229 | /* |
| 230 | * Pending invoke |
| 231 | */ |
| 232 | return AGENT_ERROR_ALREADY_INVOKING; |
| 233 | } |
| 234 | |
| 235 | request->invokeType = invokeType; |
| 236 | request->options = options; |
| 237 | request->detached = JNI_FALSE; |
| 238 | request->id = id; |
| 239 | request->clazz = clazz; |
| 240 | request->method = method; |
| 241 | request->instance = instance; |
| 242 | request->arguments = arguments; |
| 243 | request->arguments = arguments; |
| 244 | request->argumentCount = argumentCount; |
| 245 | |
| 246 | request->returnValue.j = 0; |
| 247 | request->exception = 0; |
| 248 | |
| 249 | /* |
| 250 | * Squirrel away the method signature |
| 251 | */ |
| 252 | error = methodSignature(method, NULL, &request->methodSignature, NULL); |
| 253 | if (error != JVMTI_ERROR_NONE) { |
| 254 | return error; |
| 255 | } |
| 256 | |
| 257 | /* |
| 258 | * The given references for class and instance are not guaranteed |
| 259 | * to be around long enough for invocation, so create new ones |
| 260 | * here. |
| 261 | */ |
| 262 | error = createGlobalRefs(env, request); |
| 263 | if (error != JVMTI_ERROR_NONE) { |
| 264 | jvmtiDeallocate(request->methodSignature); |
| 265 | return error; |
| 266 | } |
| 267 | |
| 268 | request->pending = JNI_TRUE; |
| 269 | request->available = JNI_FALSE; |
| 270 | return JVMTI_ERROR_NONE; |
| 271 | } |
| 272 | |
| 273 | void |
| 274 | invoker_enableInvokeRequests(jthread thread) |
| 275 | { |
| 276 | InvokeRequest *request; |
| 277 | |
| 278 | JDI_ASSERT(thread); |
| 279 | |
| 280 | request = threadControl_getInvokeRequest(thread); |
| 281 | if (request == NULL) { |
| 282 | EXIT_ERROR(AGENT_ERROR_INVALID_THREAD, "getting thread invoke request"); |
| 283 | } |
| 284 | |
| 285 | request->available = JNI_TRUE; |
| 286 | } |
| 287 | |
| 288 | jvmtiError |
| 289 | invoker_requestInvoke(jbyte invokeType, jbyte options, jint id, |
| 290 | jthread thread, jclass clazz, jmethodID method, |
| 291 | jobject instance, |
| 292 | jvalue *arguments, jint argumentCount) |
| 293 | { |
| 294 | JNIEnv *env = getEnv(); |
| 295 | InvokeRequest *request; |
| 296 | jvmtiError error = JVMTI_ERROR_NONE; |
| 297 | |
| 298 | debugMonitorEnter(invokerLock); |
| 299 | request = threadControl_getInvokeRequest(thread); |
| 300 | if (request != NULL) { |
| 301 | error = fillInvokeRequest(env, request, invokeType, options, id, |
| 302 | thread, clazz, method, instance, |
| 303 | arguments, argumentCount); |
| 304 | } |
| 305 | debugMonitorExit(invokerLock); |
| 306 | |
| 307 | if (error == JVMTI_ERROR_NONE) { |
| 308 | if (options & JDWP_INVOKE_OPTIONS(SINGLE_THREADED) ) { |
| 309 | /* true means it is okay to unblock the commandLoop thread */ |
| 310 | (void)threadControl_resumeThread(thread, JNI_TRUE); |
| 311 | } else { |
| 312 | (void)threadControl_resumeAll(); |
| 313 | } |
| 314 | } |
| 315 | |
| 316 | return error; |
| 317 | } |
| 318 | |
| 319 | static void |
| 320 | invokeConstructor(JNIEnv *env, InvokeRequest *request) |
| 321 | { |
| 322 | jobject object; |
| 323 | object = JNI_FUNC_PTR(env,NewObjectA)(env, request->clazz, |
| 324 | request->method, |
| 325 | request->arguments); |
| 326 | request->returnValue.l = NULL; |
| 327 | if (object != NULL) { |
| 328 | saveGlobalRef(env, object, &(request->returnValue.l)); |
| 329 | } |
| 330 | } |
| 331 | |
| 332 | static void |
| 333 | invokeStatic(JNIEnv *env, InvokeRequest *request) |
| 334 | { |
| 335 | switch(returnTypeTag(request->methodSignature)) { |
| 336 | case JDWP_TAG(OBJECT): |
| 337 | case JDWP_TAG(ARRAY): { |
| 338 | jobject object; |
| 339 | object = JNI_FUNC_PTR(env,CallStaticObjectMethodA)(env, |
| 340 | request->clazz, |
| 341 | request->method, |
| 342 | request->arguments); |
| 343 | request->returnValue.l = NULL; |
| 344 | if (object != NULL) { |
| 345 | saveGlobalRef(env, object, &(request->returnValue.l)); |
| 346 | } |
| 347 | break; |
| 348 | } |
| 349 | |
| 350 | |
| 351 | case JDWP_TAG(BYTE): |
| 352 | request->returnValue.b = JNI_FUNC_PTR(env,CallStaticByteMethodA)(env, |
| 353 | request->clazz, |
| 354 | request->method, |
| 355 | request->arguments); |
| 356 | break; |
| 357 | |
| 358 | case JDWP_TAG(CHAR): |
| 359 | request->returnValue.c = JNI_FUNC_PTR(env,CallStaticCharMethodA)(env, |
| 360 | request->clazz, |
| 361 | request->method, |
| 362 | request->arguments); |
| 363 | break; |
| 364 | |
| 365 | case JDWP_TAG(FLOAT): |
| 366 | request->returnValue.f = JNI_FUNC_PTR(env,CallStaticFloatMethodA)(env, |
| 367 | request->clazz, |
| 368 | request->method, |
| 369 | request->arguments); |
| 370 | break; |
| 371 | |
| 372 | case JDWP_TAG(DOUBLE): |
| 373 | request->returnValue.d = JNI_FUNC_PTR(env,CallStaticDoubleMethodA)(env, |
| 374 | request->clazz, |
| 375 | request->method, |
| 376 | request->arguments); |
| 377 | break; |
| 378 | |
| 379 | case JDWP_TAG(INT): |
| 380 | request->returnValue.i = JNI_FUNC_PTR(env,CallStaticIntMethodA)(env, |
| 381 | request->clazz, |
| 382 | request->method, |
| 383 | request->arguments); |
| 384 | break; |
| 385 | |
| 386 | case JDWP_TAG(LONG): |
| 387 | request->returnValue.j = JNI_FUNC_PTR(env,CallStaticLongMethodA)(env, |
| 388 | request->clazz, |
| 389 | request->method, |
| 390 | request->arguments); |
| 391 | break; |
| 392 | |
| 393 | case JDWP_TAG(SHORT): |
| 394 | request->returnValue.s = JNI_FUNC_PTR(env,CallStaticShortMethodA)(env, |
| 395 | request->clazz, |
| 396 | request->method, |
| 397 | request->arguments); |
| 398 | break; |
| 399 | |
| 400 | case JDWP_TAG(BOOLEAN): |
| 401 | request->returnValue.z = JNI_FUNC_PTR(env,CallStaticBooleanMethodA)(env, |
| 402 | request->clazz, |
| 403 | request->method, |
| 404 | request->arguments); |
| 405 | break; |
| 406 | |
| 407 | case JDWP_TAG(VOID): |
| 408 | JNI_FUNC_PTR(env,CallStaticVoidMethodA)(env, |
| 409 | request->clazz, |
| 410 | request->method, |
| 411 | request->arguments); |
| 412 | break; |
| 413 | |
| 414 | default: |
| 415 | EXIT_ERROR(AGENT_ERROR_NULL_POINTER,"Invalid method signature"); |
| 416 | break; |
| 417 | } |
| 418 | } |
| 419 | |
| 420 | static void |
| 421 | invokeVirtual(JNIEnv *env, InvokeRequest *request) |
| 422 | { |
| 423 | switch(returnTypeTag(request->methodSignature)) { |
| 424 | case JDWP_TAG(OBJECT): |
| 425 | case JDWP_TAG(ARRAY): { |
| 426 | jobject object; |
| 427 | object = JNI_FUNC_PTR(env,CallObjectMethodA)(env, |
| 428 | request->instance, |
| 429 | request->method, |
| 430 | request->arguments); |
| 431 | request->returnValue.l = NULL; |
| 432 | if (object != NULL) { |
| 433 | saveGlobalRef(env, object, &(request->returnValue.l)); |
| 434 | } |
| 435 | break; |
| 436 | } |
| 437 | |
| 438 | case JDWP_TAG(BYTE): |
| 439 | request->returnValue.b = JNI_FUNC_PTR(env,CallByteMethodA)(env, |
| 440 | request->instance, |
| 441 | request->method, |
| 442 | request->arguments); |
| 443 | break; |
| 444 | |
| 445 | case JDWP_TAG(CHAR): |
| 446 | request->returnValue.c = JNI_FUNC_PTR(env,CallCharMethodA)(env, |
| 447 | request->instance, |
| 448 | request->method, |
| 449 | request->arguments); |
| 450 | break; |
| 451 | |
| 452 | case JDWP_TAG(FLOAT): |
| 453 | request->returnValue.f = JNI_FUNC_PTR(env,CallFloatMethodA)(env, |
| 454 | request->instance, |
| 455 | request->method, |
| 456 | request->arguments); |
| 457 | break; |
| 458 | |
| 459 | case JDWP_TAG(DOUBLE): |
| 460 | request->returnValue.d = JNI_FUNC_PTR(env,CallDoubleMethodA)(env, |
| 461 | request->instance, |
| 462 | request->method, |
| 463 | request->arguments); |
| 464 | break; |
| 465 | |
| 466 | case JDWP_TAG(INT): |
| 467 | request->returnValue.i = JNI_FUNC_PTR(env,CallIntMethodA)(env, |
| 468 | request->instance, |
| 469 | request->method, |
| 470 | request->arguments); |
| 471 | break; |
| 472 | |
| 473 | case JDWP_TAG(LONG): |
| 474 | request->returnValue.j = JNI_FUNC_PTR(env,CallLongMethodA)(env, |
| 475 | request->instance, |
| 476 | request->method, |
| 477 | request->arguments); |
| 478 | break; |
| 479 | |
| 480 | case JDWP_TAG(SHORT): |
| 481 | request->returnValue.s = JNI_FUNC_PTR(env,CallShortMethodA)(env, |
| 482 | request->instance, |
| 483 | request->method, |
| 484 | request->arguments); |
| 485 | break; |
| 486 | |
| 487 | case JDWP_TAG(BOOLEAN): |
| 488 | request->returnValue.z = JNI_FUNC_PTR(env,CallBooleanMethodA)(env, |
| 489 | request->instance, |
| 490 | request->method, |
| 491 | request->arguments); |
| 492 | break; |
| 493 | |
| 494 | case JDWP_TAG(VOID): |
| 495 | JNI_FUNC_PTR(env,CallVoidMethodA)(env, |
| 496 | request->instance, |
| 497 | request->method, |
| 498 | request->arguments); |
| 499 | break; |
| 500 | |
| 501 | default: |
| 502 | EXIT_ERROR(AGENT_ERROR_NULL_POINTER,"Invalid method signature"); |
| 503 | break; |
| 504 | } |
| 505 | } |
| 506 | |
| 507 | static void |
| 508 | invokeNonvirtual(JNIEnv *env, InvokeRequest *request) |
| 509 | { |
| 510 | switch(returnTypeTag(request->methodSignature)) { |
| 511 | case JDWP_TAG(OBJECT): |
| 512 | case JDWP_TAG(ARRAY): { |
| 513 | jobject object; |
| 514 | object = JNI_FUNC_PTR(env,CallNonvirtualObjectMethodA)(env, |
| 515 | request->instance, |
| 516 | request->clazz, |
| 517 | request->method, |
| 518 | request->arguments); |
| 519 | request->returnValue.l = NULL; |
| 520 | if (object != NULL) { |
| 521 | saveGlobalRef(env, object, &(request->returnValue.l)); |
| 522 | } |
| 523 | break; |
| 524 | } |
| 525 | |
| 526 | case JDWP_TAG(BYTE): |
| 527 | request->returnValue.b = JNI_FUNC_PTR(env,CallNonvirtualByteMethodA)(env, |
| 528 | request->instance, |
| 529 | request->clazz, |
| 530 | request->method, |
| 531 | request->arguments); |
| 532 | break; |
| 533 | |
| 534 | case JDWP_TAG(CHAR): |
| 535 | request->returnValue.c = JNI_FUNC_PTR(env,CallNonvirtualCharMethodA)(env, |
| 536 | request->instance, |
| 537 | request->clazz, |
| 538 | request->method, |
| 539 | request->arguments); |
| 540 | break; |
| 541 | |
| 542 | case JDWP_TAG(FLOAT): |
| 543 | request->returnValue.f = JNI_FUNC_PTR(env,CallNonvirtualFloatMethodA)(env, |
| 544 | request->instance, |
| 545 | request->clazz, |
| 546 | request->method, |
| 547 | request->arguments); |
| 548 | break; |
| 549 | |
| 550 | case JDWP_TAG(DOUBLE): |
| 551 | request->returnValue.d = JNI_FUNC_PTR(env,CallNonvirtualDoubleMethodA)(env, |
| 552 | request->instance, |
| 553 | request->clazz, |
| 554 | request->method, |
| 555 | request->arguments); |
| 556 | break; |
| 557 | |
| 558 | case JDWP_TAG(INT): |
| 559 | request->returnValue.i = JNI_FUNC_PTR(env,CallNonvirtualIntMethodA)(env, |
| 560 | request->instance, |
| 561 | request->clazz, |
| 562 | request->method, |
| 563 | request->arguments); |
| 564 | break; |
| 565 | |
| 566 | case JDWP_TAG(LONG): |
| 567 | request->returnValue.j = JNI_FUNC_PTR(env,CallNonvirtualLongMethodA)(env, |
| 568 | request->instance, |
| 569 | request->clazz, |
| 570 | request->method, |
| 571 | request->arguments); |
| 572 | break; |
| 573 | |
| 574 | case JDWP_TAG(SHORT): |
| 575 | request->returnValue.s = JNI_FUNC_PTR(env,CallNonvirtualShortMethodA)(env, |
| 576 | request->instance, |
| 577 | request->clazz, |
| 578 | request->method, |
| 579 | request->arguments); |
| 580 | break; |
| 581 | |
| 582 | case JDWP_TAG(BOOLEAN): |
| 583 | request->returnValue.z = JNI_FUNC_PTR(env,CallNonvirtualBooleanMethodA)(env, |
| 584 | request->instance, |
| 585 | request->clazz, |
| 586 | request->method, |
| 587 | request->arguments); |
| 588 | break; |
| 589 | |
| 590 | case JDWP_TAG(VOID): |
| 591 | JNI_FUNC_PTR(env,CallNonvirtualVoidMethodA)(env, |
| 592 | request->instance, |
| 593 | request->clazz, |
| 594 | request->method, |
| 595 | request->arguments); |
| 596 | break; |
| 597 | |
| 598 | default: |
| 599 | EXIT_ERROR(AGENT_ERROR_NULL_POINTER,"Invalid method signature"); |
| 600 | break; |
| 601 | } |
| 602 | } |
| 603 | |
| 604 | jboolean |
| 605 | invoker_doInvoke(jthread thread) |
| 606 | { |
| 607 | JNIEnv *env; |
| 608 | jboolean startNow; |
| 609 | InvokeRequest *request; |
| 610 | |
| 611 | JDI_ASSERT(thread); |
| 612 | |
| 613 | debugMonitorEnter(invokerLock); |
| 614 | |
| 615 | request = threadControl_getInvokeRequest(thread); |
| 616 | if (request == NULL) { |
| 617 | EXIT_ERROR(AGENT_ERROR_INVALID_THREAD, "getting thread invoke request"); |
| 618 | } |
| 619 | |
| 620 | request->available = JNI_FALSE; |
| 621 | startNow = request->pending && !request->started; |
| 622 | |
| 623 | if (startNow) { |
| 624 | request->started = JNI_TRUE; |
| 625 | } |
| 626 | debugMonitorExit(invokerLock); |
| 627 | |
| 628 | if (!startNow) { |
| 629 | return JNI_FALSE; |
| 630 | } |
| 631 | |
| 632 | env = getEnv(); |
| 633 | |
| 634 | WITH_LOCAL_REFS(env, 2) { /* 1 for obj return values, 1 for exception */ |
| 635 | |
| 636 | jobject exception; |
| 637 | |
| 638 | JNI_FUNC_PTR(env,ExceptionClear)(env); |
| 639 | |
| 640 | switch (request->invokeType) { |
| 641 | case INVOKE_CONSTRUCTOR: |
| 642 | invokeConstructor(env, request); |
| 643 | break; |
| 644 | case INVOKE_STATIC: |
| 645 | invokeStatic(env, request); |
| 646 | break; |
| 647 | case INVOKE_INSTANCE: |
| 648 | if (request->options & JDWP_INVOKE_OPTIONS(NONVIRTUAL) ) { |
| 649 | invokeNonvirtual(env, request); |
| 650 | } else { |
| 651 | invokeVirtual(env, request); |
| 652 | } |
| 653 | break; |
| 654 | default: |
| 655 | JDI_ASSERT(JNI_FALSE); |
| 656 | } |
| 657 | request->exception = NULL; |
| 658 | exception = JNI_FUNC_PTR(env,ExceptionOccurred)(env); |
| 659 | if (exception != NULL) { |
| 660 | JNI_FUNC_PTR(env,ExceptionClear)(env); |
| 661 | saveGlobalRef(env, exception, &(request->exception)); |
| 662 | } |
| 663 | |
| 664 | } END_WITH_LOCAL_REFS(env); |
| 665 | |
| 666 | return JNI_TRUE; |
| 667 | } |
| 668 | |
| 669 | void |
| 670 | invoker_completeInvokeRequest(jthread thread) |
| 671 | { |
| 672 | JNIEnv *env = getEnv(); |
| 673 | PacketOutputStream out; |
| 674 | jbyte tag; |
| 675 | jobject exc; |
| 676 | jvalue returnValue; |
| 677 | jint id; |
| 678 | InvokeRequest *request; |
| 679 | jboolean detached; |
| 680 | |
| 681 | JDI_ASSERT(thread); |
| 682 | |
| 683 | /* Prevent gcc errors on uninitialized variables. */ |
| 684 | tag = 0; |
| 685 | exc = NULL; |
| 686 | id = 0; |
| 687 | |
| 688 | eventHandler_lock(); /* for proper lock order */ |
| 689 | debugMonitorEnter(invokerLock); |
| 690 | |
| 691 | request = threadControl_getInvokeRequest(thread); |
| 692 | if (request == NULL) { |
| 693 | EXIT_ERROR(AGENT_ERROR_INVALID_THREAD, "getting thread invoke request"); |
| 694 | } |
| 695 | |
| 696 | JDI_ASSERT(request->pending); |
| 697 | JDI_ASSERT(request->started); |
| 698 | |
| 699 | request->pending = JNI_FALSE; |
| 700 | request->started = JNI_FALSE; |
| 701 | request->available = JNI_TRUE; /* For next time around */ |
| 702 | |
| 703 | detached = request->detached; |
| 704 | if (!detached) { |
| 705 | if (request->options & JDWP_INVOKE_OPTIONS(SINGLE_THREADED)) { |
| 706 | (void)threadControl_suspendThread(thread, JNI_FALSE); |
| 707 | } else { |
| 708 | (void)threadControl_suspendAll(); |
| 709 | } |
| 710 | |
| 711 | if (request->invokeType == INVOKE_CONSTRUCTOR) { |
| 712 | /* |
| 713 | * Although constructors technically have a return type of |
| 714 | * void, we return the object created. |
| 715 | */ |
| 716 | tag = specificTypeKey(env, request->returnValue.l); |
| 717 | } else { |
| 718 | tag = returnTypeTag(request->methodSignature); |
| 719 | } |
| 720 | id = request->id; |
| 721 | exc = request->exception; |
| 722 | returnValue = request->returnValue; |
| 723 | } |
| 724 | |
| 725 | /* |
| 726 | * Give up the lock before I/O operation |
| 727 | */ |
| 728 | debugMonitorExit(invokerLock); |
| 729 | eventHandler_unlock(); |
| 730 | |
| 731 | |
| 732 | if (!detached) { |
| 733 | outStream_initReply(&out, id); |
| 734 | (void)outStream_writeValue(env, &out, tag, returnValue); |
| 735 | (void)outStream_writeObjectTag(env, &out, exc); |
| 736 | (void)outStream_writeObjectRef(env, &out, exc); |
| 737 | outStream_sendReply(&out); |
| 738 | } |
| 739 | } |
| 740 | |
| 741 | jboolean |
| 742 | invoker_isPending(jthread thread) |
| 743 | { |
| 744 | InvokeRequest *request; |
| 745 | |
| 746 | JDI_ASSERT(thread); |
| 747 | request = threadControl_getInvokeRequest(thread); |
| 748 | if (request == NULL) { |
| 749 | EXIT_ERROR(AGENT_ERROR_INVALID_THREAD, "getting thread invoke request"); |
| 750 | } |
| 751 | return request->pending; |
| 752 | } |
| 753 | |
| 754 | jboolean |
| 755 | invoker_isEnabled(jthread thread) |
| 756 | { |
| 757 | InvokeRequest *request; |
| 758 | |
| 759 | JDI_ASSERT(thread); |
| 760 | request = threadControl_getInvokeRequest(thread); |
| 761 | if (request == NULL) { |
| 762 | EXIT_ERROR(AGENT_ERROR_INVALID_THREAD, "getting thread invoke request"); |
| 763 | } |
| 764 | return request->available; |
| 765 | } |
| 766 | |
| 767 | void |
| 768 | invoker_detach(InvokeRequest *request) |
| 769 | { |
| 770 | JDI_ASSERT(request); |
| 771 | debugMonitorEnter(invokerLock); |
| 772 | request->detached = JNI_TRUE; |
| 773 | debugMonitorExit(invokerLock); |
| 774 | } |