1 /* 2 * Copyright (c) 2004, 2018, 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. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 #include <string.h> 25 #include "jvmti.h" 26 #include "agent_common.h" 27 #include "jni_tools.h" 28 #include "jvmti_tools.h" 29 #include "JVMTITools.h" 30 31 extern "C" { 32 33 /* ============================================================================= */ 34 35 /* scaffold objects */ 36 static jvmtiEnv *jvmti = NULL; 37 static jlong timeout = 0; 38 static jrawMonitorID syncLock = NULL; 39 40 /* constant names */ 41 #define STEP_NUMBER 3 42 #define OBJECT_NUMBER 100 43 #define JVMTI_EVENT_COUNT (int)(JVMTI_MAX_EVENT_TYPE_VAL - JVMTI_MIN_EVENT_TYPE_VAL + 1) 44 45 static int eventCount[JVMTI_EVENT_COUNT]; 46 static int newEventCount[JVMTI_EVENT_COUNT]; 47 static int singleStepIdx = JVMTI_EVENT_SINGLE_STEP - JVMTI_MIN_EVENT_TYPE_VAL; 48 49 /* ============================================================================= */ 50 51 52 static void 53 showEventStatistics(int step) { 54 int i; 55 const char* str; 56 int *currentCounts = (step == 1) ? &eventCount[0] : &newEventCount[0]; 57 58 NSK_DISPLAY0("\n"); 59 NSK_DISPLAY1("Event statistics for %d step:\n", step); 60 NSK_DISPLAY0("-----------------------------\n"); 61 for (i = 0; i < JVMTI_EVENT_COUNT; i++) { 62 if (currentCounts[i] > 0) { 63 str = TranslateEvent((jvmtiEvent)(i+JVMTI_MIN_EVENT_TYPE_VAL)); 64 NSK_DISPLAY2("%-40s %7d\n", str, currentCounts[i]); 65 } 66 } 67 } 68 69 /* ========================================================================== */ 70 71 int checkEvents(int step) { 72 int i; 73 jvmtiEvent curr; 74 int result = NSK_TRUE; 75 int *currentCounts; 76 int isExpected = 0; 77 78 switch (step) { 79 case 1: 80 currentCounts = &eventCount[0]; 81 break; 82 83 case 2: 84 case 3: 85 currentCounts = &newEventCount[0]; 86 break; 87 88 default: 89 NSK_COMPLAIN1("Unexpected step no: %d\n", step); 90 return NSK_FALSE; 91 } 92 93 for (i = 0; i < JVMTI_EVENT_COUNT; i++) { 94 95 curr = (jvmtiEvent) (i + JVMTI_MIN_EVENT_TYPE_VAL); 96 97 switch (step) { 98 case 1: 99 isExpected = ((curr == JVMTI_EVENT_VM_INIT) 100 || (curr == JVMTI_EVENT_SINGLE_STEP)); 101 break; 102 103 case 2: 104 isExpected = (curr == JVMTI_EVENT_SINGLE_STEP); 105 break; 106 107 case 3: 108 isExpected = (curr == JVMTI_EVENT_VM_DEATH); 109 break; 110 } 111 112 if (isExpected) { 113 if (currentCounts[i] < 0) { 114 NSK_COMPLAIN2("Unexpected events number %7d for %s\n\texpected value must be greater than 1\n", 115 currentCounts[i], 116 TranslateEvent(curr)); 117 result = NSK_FALSE; 118 } 119 } else { 120 121 if (currentCounts[i] > 0) { 122 NSK_COMPLAIN2("Unexpected event %s was sent %d times\n", 123 TranslateEvent(curr), 124 currentCounts[i]); 125 result = NSK_FALSE; 126 } 127 } 128 } 129 130 return result; 131 } 132 133 static void 134 changeCount(jvmtiEvent event, int *currentCounts) { 135 136 if (!NSK_JVMTI_VERIFY(jvmti->RawMonitorEnter(syncLock))) 137 nsk_jvmti_setFailStatus(); 138 139 currentCounts[event - JVMTI_MIN_EVENT_TYPE_VAL]++; 140 141 if (!NSK_JVMTI_VERIFY(jvmti->RawMonitorExit(syncLock))) 142 nsk_jvmti_setFailStatus(); 143 144 } 145 146 /* ============================================================================= */ 147 148 /* callbacks */ 149 JNIEXPORT void JNICALL 150 cbVMInit(jvmtiEnv* jvmti, JNIEnv* jni_env, jthread thread) { 151 changeCount(JVMTI_EVENT_VM_INIT, &eventCount[0]); 152 } 153 154 JNIEXPORT void JNICALL 155 cbVMDeath(jvmtiEnv* jvmti, JNIEnv* jni_env) { 156 changeCount(JVMTI_EVENT_VM_DEATH, &newEventCount[0]); 157 showEventStatistics(STEP_NUMBER); 158 if (!checkEvents(STEP_NUMBER)) 159 nsk_jvmti_setFailStatus(); 160 161 if (!NSK_JVMTI_VERIFY(jvmti->DestroyRawMonitor(syncLock))) 162 nsk_jvmti_setFailStatus(); 163 164 } 165 166 void JNICALL 167 cbException(jvmtiEnv *jvmti_env, JNIEnv* jni_env, jthread thread, 168 jmethodID method, jlocation location, jobject exception, 169 jmethodID catch_method, jlocation catch_location) { 170 changeCount(JVMTI_EVENT_EXCEPTION, &eventCount[0]); 171 } 172 173 void JNICALL 174 cbExceptionCatch(jvmtiEnv *jvmti_env, JNIEnv* jni_env, jthread thread, 175 jmethodID method, jlocation location, jobject exception) { 176 changeCount(JVMTI_EVENT_EXCEPTION_CATCH, &eventCount[0]); 177 } 178 179 void JNICALL 180 cbSingleStep(jvmtiEnv *jvmti_env, JNIEnv* jni_env, jthread thread, 181 jmethodID method, jlocation location) { 182 char *name; 183 char *sign; 184 char *genc; 185 186 if (!NSK_JVMTI_VERIFY(jvmti_env->GetMethodName(method, &name, &sign, &genc))) { 187 nsk_jvmti_setFailStatus(); 188 return; 189 } 190 191 if (!strncmp(name,"javaMethod", 8)) { 192 NSK_DISPLAY2("\tMethod: %s, location: %lld\n", 193 name, location); 194 changeCount(JVMTI_EVENT_SINGLE_STEP, &eventCount[0]); 195 } 196 197 if (!NSK_JVMTI_VERIFY(jvmti_env->Deallocate((unsigned char*)name))) { 198 nsk_jvmti_setFailStatus(); 199 } 200 if (!NSK_JVMTI_VERIFY(jvmti_env->Deallocate((unsigned char*)sign))) { 201 nsk_jvmti_setFailStatus(); 202 } 203 if (genc != NULL) 204 if (!NSK_JVMTI_VERIFY(jvmti_env->Deallocate((unsigned char*)genc))) { 205 nsk_jvmti_setFailStatus(); 206 } 207 } 208 209 void JNICALL 210 cbNewSingleStep(jvmtiEnv *jvmti_env, JNIEnv* jni_env, jthread thread, 211 jmethodID method, jlocation location) { 212 char *name; 213 char *sign; 214 char *genc; 215 216 if (!NSK_JVMTI_VERIFY(jvmti_env->GetMethodName(method, &name, &sign, &genc))) { 217 nsk_jvmti_setFailStatus(); 218 return; 219 } 220 221 if (!strncmp(name,"javaMethod", 8)) { 222 NSK_DISPLAY2("\tMethod: %s, location: %lld\n", 223 name, location); 224 changeCount(JVMTI_EVENT_SINGLE_STEP, &newEventCount[0]); 225 } 226 227 if (!NSK_JVMTI_VERIFY(jvmti_env->Deallocate((unsigned char*)name))) { 228 nsk_jvmti_setFailStatus(); 229 } 230 if (!NSK_JVMTI_VERIFY(jvmti_env->Deallocate((unsigned char*)sign))) { 231 nsk_jvmti_setFailStatus(); 232 } 233 if (genc != NULL) 234 if (!NSK_JVMTI_VERIFY(jvmti_env->Deallocate((unsigned char*)genc))) { 235 nsk_jvmti_setFailStatus(); 236 } 237 } 238 239 void JNICALL 240 cbFramePop(jvmtiEnv *jvmti_env, JNIEnv* jni_env, jthread thread, 241 jmethodID method, jboolean was_popped_by_exception) { 242 changeCount(JVMTI_EVENT_FRAME_POP, &eventCount[0]); 243 } 244 245 void JNICALL 246 cbBreakpoint(jvmtiEnv *jvmti_env, JNIEnv* jni_env, jthread thread, 247 jmethodID method, jlocation location) { 248 changeCount(JVMTI_EVENT_BREAKPOINT, &eventCount[0]); 249 } 250 251 void JNICALL 252 cbFieldAccess(jvmtiEnv *jvmti_env, JNIEnv* jni_env, jthread thread, 253 jmethodID method, jlocation location, jclass field_klass, 254 jobject object, jfieldID field) { 255 changeCount(JVMTI_EVENT_FIELD_ACCESS, &eventCount[0]); 256 } 257 258 void JNICALL 259 cbFieldModification(jvmtiEnv *jvmti_env, JNIEnv* jni_env, jthread thread, 260 jmethodID method, jlocation location, jclass field_klass, 261 jobject object, jfieldID field, char signature_type, 262 jvalue new_value) { 263 changeCount(JVMTI_EVENT_FIELD_MODIFICATION, &eventCount[0]); 264 } 265 266 void JNICALL 267 cbMethodEntry(jvmtiEnv *jvmti_env, JNIEnv* jni_env, jthread thread, 268 jmethodID method) { 269 changeCount(JVMTI_EVENT_METHOD_ENTRY, &eventCount[0]); 270 } 271 272 void JNICALL 273 cbMethodExit(jvmtiEnv *jvmti_env, JNIEnv* jni_env, jthread thread, 274 jmethodID method, jboolean was_popped_by_exception, 275 jvalue return_value) { 276 changeCount(JVMTI_EVENT_METHOD_EXIT, &eventCount[0]); 277 } 278 279 void JNICALL 280 cbNativeMethodBind(jvmtiEnv *jvmti_env, JNIEnv* jni_env,jthread thread, 281 jmethodID method, void* address, void** new_address_ptr) { 282 changeCount(JVMTI_EVENT_NATIVE_METHOD_BIND, &eventCount[0]); 283 } 284 285 void JNICALL 286 cbMonitorWait(jvmtiEnv *jvmti_env, JNIEnv* jni_env, jthread thread, 287 jobject object, jlong tout) { 288 289 changeCount(JVMTI_EVENT_MONITOR_WAIT, &eventCount[0]); 290 } 291 292 void JNICALL 293 cbMonitorWaited(jvmtiEnv *jvmti_env, JNIEnv* jni_env, jthread thread, 294 jobject object, jboolean timed_out) { 295 296 changeCount(JVMTI_EVENT_MONITOR_WAITED, &eventCount[0]); 297 } 298 299 JNIEXPORT void JNICALL 300 cbMonitorContendedEnter(jvmtiEnv* jvmti, JNIEnv* jni_env, jthread thread, 301 jobject object) { 302 303 changeCount(JVMTI_EVENT_MONITOR_CONTENDED_ENTER, &eventCount[0]); 304 } 305 306 void JNICALL 307 cbMonitorContendedEntered(jvmtiEnv *jvmti_env, JNIEnv* jni_env, jthread thread, 308 jobject object) { 309 310 changeCount(JVMTI_EVENT_MONITOR_CONTENDED_ENTERED, &eventCount[0]); 311 } 312 313 void JNICALL 314 cbCompiledMethodLoad(jvmtiEnv *jvmti_env, jmethodID method, jint code_size, 315 const void* code_addr, jint map_length, 316 const jvmtiAddrLocationMap* map, const void* compile_info) { 317 changeCount(JVMTI_EVENT_COMPILED_METHOD_LOAD, &eventCount[0]); 318 } 319 320 void JNICALL 321 cbCompiledMethodUnload(jvmtiEnv *jvmti_env, jmethodID method, 322 const void* code_addr) { 323 changeCount(JVMTI_EVENT_COMPILED_METHOD_UNLOAD, &eventCount[0]); 324 } 325 326 void JNICALL 327 cbGarbageCollectionStart(jvmtiEnv *jvmti_env) { 328 changeCount(JVMTI_EVENT_GARBAGE_COLLECTION_START, &eventCount[0]); 329 } 330 331 void JNICALL 332 cbGarbageCollectionFinish(jvmtiEnv *jvmti_env) { 333 changeCount(JVMTI_EVENT_GARBAGE_COLLECTION_FINISH, &eventCount[0]); 334 } 335 336 void JNICALL 337 cbObjectFree(jvmtiEnv *jvmti_env, jlong tag) { 338 339 changeCount(JVMTI_EVENT_OBJECT_FREE, &eventCount[0]); 340 if (tag < 1 || tag > OBJECT_NUMBER) { 341 NSK_COMPLAIN1("Unexpected tag value %lld\n", tag); 342 nsk_jvmti_setFailStatus(); 343 } 344 } 345 346 void JNICALL 347 cbVMObjectAlloc(jvmtiEnv *jvmti_env, JNIEnv* jni_env, jthread thread, 348 jobject object, jclass object_klass, jlong size) { 349 350 changeCount(JVMTI_EVENT_VM_OBJECT_ALLOC, &eventCount[0]); 351 } 352 353 /* ============================================================================= */ 354 355 static int enableEvent(jvmtiEvent event) { 356 357 if (nsk_jvmti_isOptionalEvent(event) 358 && (event != JVMTI_EVENT_SINGLE_STEP)) { 359 if (!NSK_JVMTI_VERIFY_CODE(JVMTI_ERROR_MUST_POSSESS_CAPABILITY, 360 jvmti->SetEventNotificationMode(JVMTI_ENABLE, event, NULL))) { 361 NSK_COMPLAIN1("Unexpected error enabling %s\n", 362 TranslateEvent(event)); 363 return NSK_FALSE; 364 } 365 } else { 366 if (!NSK_JVMTI_VERIFY(jvmti->SetEventNotificationMode(JVMTI_ENABLE, event, NULL))) { 367 NSK_COMPLAIN1("Unexpected error enabling %s\n", 368 TranslateEvent(event)); 369 return NSK_FALSE; 370 } 371 } 372 373 return NSK_TRUE; 374 } 375 376 /** 377 * Enable or disable tested events. 378 */ 379 static int enableEventList() { 380 381 int i, result; 382 383 result = enableEvent(JVMTI_EVENT_VM_INIT); 384 385 result = result && enableEvent(JVMTI_EVENT_VM_DEATH); 386 387 /* enabling optional events */ 388 for (i = 0; i < JVMTI_EVENT_COUNT; i++) { 389 jvmtiEvent event = (jvmtiEvent)(i+JVMTI_MIN_EVENT_TYPE_VAL); 390 391 if (nsk_jvmti_isOptionalEvent(event)) 392 result = result && enableEvent(event); 393 } 394 395 if (result == NSK_FALSE) { 396 nsk_jvmti_setFailStatus(); 397 return NSK_FALSE; 398 } 399 400 return NSK_TRUE; 401 } 402 403 /* ============================================================================= */ 404 405 static int 406 setCallBacks(int step) { 407 408 int i; 409 410 jvmtiEventCallbacks eventCallbacks; 411 memset(&eventCallbacks, 0, sizeof(eventCallbacks)); 412 413 switch (step) { 414 case 1: 415 for (i = 0; i < JVMTI_EVENT_COUNT; i++) { 416 eventCount[i] = 0; 417 } 418 419 eventCallbacks.VMInit = cbVMInit; 420 eventCallbacks.Exception = cbException; 421 eventCallbacks.ExceptionCatch = cbExceptionCatch; 422 eventCallbacks.SingleStep = cbSingleStep; 423 eventCallbacks.FramePop = cbFramePop; 424 eventCallbacks.Breakpoint = cbBreakpoint; 425 eventCallbacks.FieldAccess = cbFieldAccess; 426 eventCallbacks.FieldModification = cbFieldModification; 427 eventCallbacks.MethodEntry = cbMethodEntry; 428 eventCallbacks.MethodExit = cbMethodExit; 429 eventCallbacks.NativeMethodBind = cbNativeMethodBind; 430 eventCallbacks.CompiledMethodLoad = cbCompiledMethodLoad; 431 eventCallbacks.CompiledMethodUnload = cbCompiledMethodUnload; 432 eventCallbacks.MonitorWait = cbMonitorWait; 433 eventCallbacks.MonitorWaited = cbMonitorWaited; 434 eventCallbacks.MonitorContendedEnter = cbMonitorContendedEnter; 435 eventCallbacks.MonitorContendedEntered = cbMonitorContendedEntered; 436 eventCallbacks.GarbageCollectionStart = cbGarbageCollectionStart; 437 eventCallbacks.GarbageCollectionFinish = cbGarbageCollectionFinish; 438 eventCallbacks.ObjectFree = cbObjectFree; 439 eventCallbacks.VMObjectAlloc = cbVMObjectAlloc; 440 break; 441 442 case 2: 443 for (i = 0; i < JVMTI_EVENT_COUNT; i++) { 444 newEventCount[i] = 0; 445 } 446 447 eventCallbacks.SingleStep = cbNewSingleStep; 448 break; 449 450 case 3: 451 /* comparing number of JVMTI_EVENT_SINGLE_STEP events for steps*/ 452 if (eventCount[singleStepIdx] != newEventCount[singleStepIdx]) { 453 NSK_COMPLAIN2("Number of JVMTI_EVENT_SINGLE_STEP events must be the same\n\t1-st callback=%d; 2-nd callback=%d\n", 454 eventCount[singleStepIdx], 455 newEventCount[singleStepIdx]); 456 } 457 458 for (i = 0; i < JVMTI_EVENT_COUNT; i++) { 459 newEventCount[i] = 0; 460 } 461 462 eventCallbacks.VMDeath = cbVMDeath; 463 break; 464 465 } 466 if (!NSK_JVMTI_VERIFY(jvmti->SetEventCallbacks(&eventCallbacks, sizeof(eventCallbacks)))) 467 return NSK_FALSE; 468 469 return NSK_TRUE; 470 } 471 472 /* ============================================================================= */ 473 474 /** Agent algorithm. */ 475 static void JNICALL 476 agentProc(jvmtiEnv* jvmti, JNIEnv* agentJNI, void* arg) { 477 478 int i; 479 480 for (i = 1; i <= STEP_NUMBER; i++) { 481 482 if (!nsk_jvmti_waitForSync(timeout)) 483 return; 484 485 NSK_DISPLAY0("Check received events\n"); 486 487 if (i < STEP_NUMBER) { 488 showEventStatistics(i); 489 if (!checkEvents(i)) 490 nsk_jvmti_setFailStatus(); 491 492 if (!setCallBacks(i + 1)) { 493 return; 494 } 495 } 496 497 if (!nsk_jvmti_resumeSync()) 498 return; 499 } 500 501 } 502 503 /* ============================================================================= */ 504 505 /** Agent library initialization. */ 506 #ifdef STATIC_BUILD 507 JNIEXPORT jint JNICALL Agent_OnLoad_em02t007(JavaVM *jvm, char *options, void *reserved) { 508 return Agent_Initialize(jvm, options, reserved); 509 } 510 JNIEXPORT jint JNICALL Agent_OnAttach_em02t007(JavaVM *jvm, char *options, void *reserved) { 511 return Agent_Initialize(jvm, options, reserved); 512 } 513 JNIEXPORT jint JNI_OnLoad_em02t007(JavaVM *jvm, char *options, void *reserved) { 514 return JNI_VERSION_1_8; 515 } 516 #endif 517 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) { 518 519 if (!NSK_VERIFY(nsk_jvmti_parseOptions(options))) 520 return JNI_ERR; 521 522 timeout = nsk_jvmti_getWaitTime() * 60 * 1000; 523 524 if (!NSK_VERIFY((jvmti = nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL)) 525 return JNI_ERR; 526 527 if (!NSK_JVMTI_VERIFY(jvmti->CreateRawMonitor("_syncLock", &syncLock))) { 528 nsk_jvmti_setFailStatus(); 529 return JNI_ERR; 530 } 531 532 { 533 jvmtiCapabilities caps; 534 memset(&caps, 0, sizeof(caps)); 535 536 caps.can_generate_single_step_events = 1; 537 if (!NSK_JVMTI_VERIFY(jvmti->AddCapabilities(&caps))) 538 return JNI_ERR; 539 } 540 541 if (!setCallBacks(1)) { 542 return JNI_ERR; 543 } 544 545 if (!enableEventList()) { 546 return JNI_ERR; 547 } 548 549 if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL))) 550 return JNI_ERR; 551 552 return JNI_OK; 553 } 554 555 /* ============================================================================= */ 556 557 558 }