Mercurial > hg > graal-compiler
annotate src/share/vm/prims/jvmtiEnv.cpp @ 1552:c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
| author | trims |
|---|---|
| date | Thu, 27 May 2010 19:08:38 -0700 |
| parents | 0579c695832f |
| children | ce6848d0666d |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2003, 2009, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 | |
| 26 # include "incls/_precompiled.incl" | |
| 27 # include "incls/_jvmtiEnv.cpp.incl" | |
| 28 | |
| 29 | |
| 30 #define FIXLATER 0 // REMOVE this when completed. | |
| 31 | |
| 32 // FIXLATER: hook into JvmtiTrace | |
| 33 #define TraceJVMTICalls false | |
| 34 | |
| 1121 | 35 JvmtiEnv::JvmtiEnv(jint version) : JvmtiEnvBase(version) { |
| 0 | 36 } |
| 37 | |
| 38 JvmtiEnv::~JvmtiEnv() { | |
| 39 } | |
| 40 | |
| 41 JvmtiEnv* | |
| 1121 | 42 JvmtiEnv::create_a_jvmti(jint version) { |
| 43 return new JvmtiEnv(version); | |
| 0 | 44 } |
| 45 | |
| 46 // VM operation class to copy jni function table at safepoint. | |
| 47 // More than one java threads or jvmti agents may be reading/ | |
| 48 // modifying jni function tables. To reduce the risk of bad | |
| 49 // interaction b/w these threads it is copied at safepoint. | |
| 50 class VM_JNIFunctionTableCopier : public VM_Operation { | |
| 51 private: | |
| 52 const struct JNINativeInterface_ *_function_table; | |
| 53 public: | |
| 54 VM_JNIFunctionTableCopier(const struct JNINativeInterface_ *func_tbl) { | |
| 55 _function_table = func_tbl; | |
| 56 }; | |
| 57 | |
| 58 VMOp_Type type() const { return VMOp_JNIFunctionTableCopier; } | |
| 59 void doit() { | |
| 60 copy_jni_function_table(_function_table); | |
| 61 }; | |
| 62 }; | |
| 63 | |
| 64 // | |
| 65 // Do not change the "prefix" marker below, everything above it is copied | |
| 66 // unchanged into the filled stub, everything below is controlled by the | |
| 67 // stub filler (only method bodies are carried forward, and then only for | |
| 68 // functionality still in the spec). | |
| 69 // | |
| 70 // end file prefix | |
| 71 | |
| 72 // | |
| 73 // Memory Management functions | |
| 74 // | |
| 75 | |
| 76 // mem_ptr - pre-checked for NULL | |
| 77 jvmtiError | |
| 78 JvmtiEnv::Allocate(jlong size, unsigned char** mem_ptr) { | |
| 79 return allocate(size, mem_ptr); | |
| 80 } /* end Allocate */ | |
| 81 | |
| 82 | |
| 83 // mem - NULL is a valid value, must be checked | |
| 84 jvmtiError | |
| 85 JvmtiEnv::Deallocate(unsigned char* mem) { | |
| 86 return deallocate(mem); | |
| 87 } /* end Deallocate */ | |
| 88 | |
| 89 // Threads_lock NOT held, java_thread not protected by lock | |
| 90 // java_thread - pre-checked | |
| 91 // data - NULL is a valid value, must be checked | |
| 92 jvmtiError | |
| 93 JvmtiEnv::SetThreadLocalStorage(JavaThread* java_thread, const void* data) { | |
| 94 JvmtiThreadState* state = java_thread->jvmti_thread_state(); | |
| 95 if (state == NULL) { | |
| 96 if (data == NULL) { | |
| 97 // leaving state unset same as data set to NULL | |
| 98 return JVMTI_ERROR_NONE; | |
| 99 } | |
| 100 // otherwise, create the state | |
| 101 state = JvmtiThreadState::state_for(java_thread); | |
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102 if (state == NULL) { |
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103 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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104 } |
| 0 | 105 } |
| 106 state->env_thread_state(this)->set_agent_thread_local_storage_data((void*)data); | |
| 107 return JVMTI_ERROR_NONE; | |
| 108 } /* end SetThreadLocalStorage */ | |
| 109 | |
| 110 | |
| 111 // Threads_lock NOT held | |
| 112 // thread - NOT pre-checked | |
| 113 // data_ptr - pre-checked for NULL | |
| 114 jvmtiError | |
| 115 JvmtiEnv::GetThreadLocalStorage(jthread thread, void** data_ptr) { | |
| 116 JavaThread* current_thread = JavaThread::current(); | |
| 117 if (thread == NULL) { | |
| 118 JvmtiThreadState* state = current_thread->jvmti_thread_state(); | |
| 119 *data_ptr = (state == NULL) ? NULL : | |
| 120 state->env_thread_state(this)->get_agent_thread_local_storage_data(); | |
| 121 } else { | |
| 122 | |
| 123 // jvmti_GetThreadLocalStorage is "in native" and doesn't transition | |
| 124 // the thread to _thread_in_vm. However, when the TLS for a thread | |
| 125 // other than the current thread is required we need to transition | |
| 126 // from native so as to resolve the jthread. | |
| 127 | |
| 128 ThreadInVMfromNative __tiv(current_thread); | |
| 129 __ENTRY(jvmtiError, JvmtiEnv::GetThreadLocalStorage , current_thread) | |
| 130 debug_only(VMNativeEntryWrapper __vew;) | |
| 131 | |
| 132 oop thread_oop = JNIHandles::resolve_external_guard(thread); | |
| 133 if (thread_oop == NULL) { | |
| 134 return JVMTI_ERROR_INVALID_THREAD; | |
| 135 } | |
| 1142 | 136 if (!thread_oop->is_a(SystemDictionary::Thread_klass())) { |
| 0 | 137 return JVMTI_ERROR_INVALID_THREAD; |
| 138 } | |
| 139 JavaThread* java_thread = java_lang_Thread::thread(thread_oop); | |
| 140 if (java_thread == NULL) { | |
| 141 return JVMTI_ERROR_THREAD_NOT_ALIVE; | |
| 142 } | |
| 143 JvmtiThreadState* state = java_thread->jvmti_thread_state(); | |
| 144 *data_ptr = (state == NULL) ? NULL : | |
| 145 state->env_thread_state(this)->get_agent_thread_local_storage_data(); | |
| 146 } | |
| 147 return JVMTI_ERROR_NONE; | |
| 148 } /* end GetThreadLocalStorage */ | |
| 149 | |
| 150 // | |
| 151 // Class functions | |
| 152 // | |
| 153 | |
| 154 // class_count_ptr - pre-checked for NULL | |
| 155 // classes_ptr - pre-checked for NULL | |
| 156 jvmtiError | |
| 157 JvmtiEnv::GetLoadedClasses(jint* class_count_ptr, jclass** classes_ptr) { | |
| 158 return JvmtiGetLoadedClasses::getLoadedClasses(this, class_count_ptr, classes_ptr); | |
| 159 } /* end GetLoadedClasses */ | |
| 160 | |
| 161 | |
| 162 // initiating_loader - NULL is a valid value, must be checked | |
| 163 // class_count_ptr - pre-checked for NULL | |
| 164 // classes_ptr - pre-checked for NULL | |
| 165 jvmtiError | |
| 166 JvmtiEnv::GetClassLoaderClasses(jobject initiating_loader, jint* class_count_ptr, jclass** classes_ptr) { | |
| 167 return JvmtiGetLoadedClasses::getClassLoaderClasses(this, initiating_loader, | |
| 168 class_count_ptr, classes_ptr); | |
| 169 } /* end GetClassLoaderClasses */ | |
| 170 | |
| 171 // k_mirror - may be primitive, this must be checked | |
| 172 // is_modifiable_class_ptr - pre-checked for NULL | |
| 173 jvmtiError | |
| 174 JvmtiEnv::IsModifiableClass(oop k_mirror, jboolean* is_modifiable_class_ptr) { | |
| 175 *is_modifiable_class_ptr = VM_RedefineClasses::is_modifiable_class(k_mirror)? | |
| 176 JNI_TRUE : JNI_FALSE; | |
| 177 return JVMTI_ERROR_NONE; | |
| 178 } /* end IsModifiableClass */ | |
| 179 | |
| 180 // class_count - pre-checked to be greater than or equal to 0 | |
| 181 // classes - pre-checked for NULL | |
| 182 jvmtiError | |
| 183 JvmtiEnv::RetransformClasses(jint class_count, const jclass* classes) { | |
| 184 //TODO: add locking | |
| 185 | |
| 186 int index; | |
| 187 JavaThread* current_thread = JavaThread::current(); | |
| 188 ResourceMark rm(current_thread); | |
| 189 | |
| 190 jvmtiClassDefinition* class_definitions = | |
| 191 NEW_RESOURCE_ARRAY(jvmtiClassDefinition, class_count); | |
| 192 NULL_CHECK(class_definitions, JVMTI_ERROR_OUT_OF_MEMORY); | |
| 193 | |
| 194 for (index = 0; index < class_count; index++) { | |
| 195 HandleMark hm(current_thread); | |
| 196 | |
| 197 jclass jcls = classes[index]; | |
| 198 oop k_mirror = JNIHandles::resolve_external_guard(jcls); | |
| 199 if (k_mirror == NULL) { | |
| 200 return JVMTI_ERROR_INVALID_CLASS; | |
| 201 } | |
| 1142 | 202 if (!k_mirror->is_a(SystemDictionary::Class_klass())) { |
| 0 | 203 return JVMTI_ERROR_INVALID_CLASS; |
| 204 } | |
| 205 | |
| 206 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 207 return JVMTI_ERROR_UNMODIFIABLE_CLASS; | |
| 208 } | |
| 209 | |
| 210 klassOop k_oop = java_lang_Class::as_klassOop(k_mirror); | |
| 211 KlassHandle klass(current_thread, k_oop); | |
| 212 | |
| 213 jint status = klass->jvmti_class_status(); | |
| 214 if (status & (JVMTI_CLASS_STATUS_ERROR)) { | |
| 215 return JVMTI_ERROR_INVALID_CLASS; | |
| 216 } | |
| 217 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { | |
| 218 return JVMTI_ERROR_UNMODIFIABLE_CLASS; | |
| 219 } | |
| 220 | |
| 221 instanceKlassHandle ikh(current_thread, k_oop); | |
| 222 if (ikh->get_cached_class_file_bytes() == NULL) { | |
| 223 // not cached, we need to reconstitute the class file from VM representation | |
| 224 constantPoolHandle constants(current_thread, ikh->constants()); | |
| 225 ObjectLocker ol(constants, current_thread); // lock constant pool while we query it | |
| 226 | |
| 227 JvmtiClassFileReconstituter reconstituter(ikh); | |
| 228 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
| 229 return reconstituter.get_error(); | |
| 230 } | |
| 231 | |
| 232 class_definitions[index].class_byte_count = (jint)reconstituter.class_file_size(); | |
| 233 class_definitions[index].class_bytes = (unsigned char*) | |
| 234 reconstituter.class_file_bytes(); | |
| 235 } else { | |
| 236 // it is cached, get it from the cache | |
| 237 class_definitions[index].class_byte_count = ikh->get_cached_class_file_len(); | |
| 238 class_definitions[index].class_bytes = ikh->get_cached_class_file_bytes(); | |
| 239 } | |
| 240 class_definitions[index].klass = jcls; | |
| 241 } | |
| 242 VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_retransform); | |
| 243 VMThread::execute(&op); | |
| 244 return (op.check_error()); | |
| 245 } /* end RetransformClasses */ | |
| 246 | |
| 247 | |
| 248 // class_count - pre-checked to be greater than or equal to 0 | |
| 249 // class_definitions - pre-checked for NULL | |
| 250 jvmtiError | |
| 251 JvmtiEnv::RedefineClasses(jint class_count, const jvmtiClassDefinition* class_definitions) { | |
| 252 //TODO: add locking | |
| 253 VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_redefine); | |
| 254 VMThread::execute(&op); | |
| 255 return (op.check_error()); | |
| 256 } /* end RedefineClasses */ | |
| 257 | |
| 258 | |
| 259 // | |
| 260 // Object functions | |
| 261 // | |
| 262 | |
| 263 // size_ptr - pre-checked for NULL | |
| 264 jvmtiError | |
| 265 JvmtiEnv::GetObjectSize(jobject object, jlong* size_ptr) { | |
| 266 oop mirror = JNIHandles::resolve_external_guard(object); | |
| 267 NULL_CHECK(mirror, JVMTI_ERROR_INVALID_OBJECT); | |
| 268 | |
| 1142 | 269 if (mirror->klass() == SystemDictionary::Class_klass()) { |
| 0 | 270 if (!java_lang_Class::is_primitive(mirror)) { |
| 271 mirror = java_lang_Class::as_klassOop(mirror); | |
| 272 assert(mirror != NULL, "class for non-primitive mirror must exist"); | |
| 273 } | |
| 274 } | |
| 275 | |
| 276 *size_ptr = mirror->size() * wordSize; | |
| 277 return JVMTI_ERROR_NONE; | |
| 278 } /* end GetObjectSize */ | |
| 279 | |
| 280 // | |
| 281 // Method functions | |
| 282 // | |
| 283 | |
| 284 // prefix - NULL is a valid value, must be checked | |
| 285 jvmtiError | |
| 286 JvmtiEnv::SetNativeMethodPrefix(const char* prefix) { | |
| 287 return prefix == NULL? | |
| 288 SetNativeMethodPrefixes(0, NULL) : | |
| 289 SetNativeMethodPrefixes(1, (char**)&prefix); | |
| 290 } /* end SetNativeMethodPrefix */ | |
| 291 | |
| 292 | |
| 293 // prefix_count - pre-checked to be greater than or equal to 0 | |
| 294 // prefixes - pre-checked for NULL | |
| 295 jvmtiError | |
| 296 JvmtiEnv::SetNativeMethodPrefixes(jint prefix_count, char** prefixes) { | |
| 297 // Have to grab JVMTI thread state lock to be sure that some thread | |
| 298 // isn't accessing the prefixes at the same time we are setting them. | |
| 299 // No locks during VM bring-up. | |
| 300 if (Threads::number_of_threads() == 0) { | |
| 301 return set_native_method_prefixes(prefix_count, prefixes); | |
| 302 } else { | |
| 303 MutexLocker mu(JvmtiThreadState_lock); | |
| 304 return set_native_method_prefixes(prefix_count, prefixes); | |
| 305 } | |
| 306 } /* end SetNativeMethodPrefixes */ | |
| 307 | |
| 308 // | |
| 309 // Event Management functions | |
| 310 // | |
| 311 | |
| 312 // callbacks - NULL is a valid value, must be checked | |
| 313 // size_of_callbacks - pre-checked to be greater than or equal to 0 | |
| 314 jvmtiError | |
| 315 JvmtiEnv::SetEventCallbacks(const jvmtiEventCallbacks* callbacks, jint size_of_callbacks) { | |
| 316 JvmtiEventController::set_event_callbacks(this, callbacks, size_of_callbacks); | |
| 317 return JVMTI_ERROR_NONE; | |
| 318 } /* end SetEventCallbacks */ | |
| 319 | |
| 320 | |
| 321 // event_thread - NULL is a valid value, must be checked | |
| 322 jvmtiError | |
| 323 JvmtiEnv::SetEventNotificationMode(jvmtiEventMode mode, jvmtiEvent event_type, jthread event_thread, ...) { | |
| 324 JavaThread* java_thread = NULL; | |
| 325 if (event_thread != NULL) { | |
| 326 oop thread_oop = JNIHandles::resolve_external_guard(event_thread); | |
| 327 if (thread_oop == NULL) { | |
| 328 return JVMTI_ERROR_INVALID_THREAD; | |
| 329 } | |
| 1142 | 330 if (!thread_oop->is_a(SystemDictionary::Thread_klass())) { |
| 0 | 331 return JVMTI_ERROR_INVALID_THREAD; |
| 332 } | |
| 333 java_thread = java_lang_Thread::thread(thread_oop); | |
| 334 if (java_thread == NULL) { | |
| 335 return JVMTI_ERROR_THREAD_NOT_ALIVE; | |
| 336 } | |
| 337 } | |
| 338 | |
| 339 // event_type must be valid | |
| 340 if (!JvmtiEventController::is_valid_event_type(event_type)) { | |
| 341 return JVMTI_ERROR_INVALID_EVENT_TYPE; | |
| 342 } | |
| 343 | |
| 344 // global events cannot be controlled at thread level. | |
| 345 if (java_thread != NULL && JvmtiEventController::is_global_event(event_type)) { | |
| 346 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
| 347 } | |
| 348 | |
| 349 bool enabled = (mode == JVMTI_ENABLE); | |
| 350 | |
| 351 // assure that needed capabilities are present | |
| 352 if (enabled && !JvmtiUtil::has_event_capability(event_type, get_capabilities())) { | |
| 353 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; | |
| 354 } | |
| 355 | |
| 356 if (event_type == JVMTI_EVENT_CLASS_FILE_LOAD_HOOK && enabled) { | |
| 357 record_class_file_load_hook_enabled(); | |
| 358 } | |
| 359 JvmtiEventController::set_user_enabled(this, java_thread, event_type, enabled); | |
| 360 | |
| 361 return JVMTI_ERROR_NONE; | |
| 362 } /* end SetEventNotificationMode */ | |
| 363 | |
| 364 // | |
| 365 // Capability functions | |
| 366 // | |
| 367 | |
| 368 // capabilities_ptr - pre-checked for NULL | |
| 369 jvmtiError | |
| 370 JvmtiEnv::GetPotentialCapabilities(jvmtiCapabilities* capabilities_ptr) { | |
| 371 JvmtiManageCapabilities::get_potential_capabilities(get_capabilities(), | |
| 372 get_prohibited_capabilities(), | |
| 373 capabilities_ptr); | |
| 374 return JVMTI_ERROR_NONE; | |
| 375 } /* end GetPotentialCapabilities */ | |
| 376 | |
| 377 | |
| 378 // capabilities_ptr - pre-checked for NULL | |
| 379 jvmtiError | |
| 380 JvmtiEnv::AddCapabilities(const jvmtiCapabilities* capabilities_ptr) { | |
| 381 return JvmtiManageCapabilities::add_capabilities(get_capabilities(), | |
| 382 get_prohibited_capabilities(), | |
| 383 capabilities_ptr, | |
| 384 get_capabilities()); | |
| 385 } /* end AddCapabilities */ | |
| 386 | |
| 387 | |
| 388 // capabilities_ptr - pre-checked for NULL | |
| 389 jvmtiError | |
| 390 JvmtiEnv::RelinquishCapabilities(const jvmtiCapabilities* capabilities_ptr) { | |
| 391 JvmtiManageCapabilities::relinquish_capabilities(get_capabilities(), capabilities_ptr, get_capabilities()); | |
| 392 return JVMTI_ERROR_NONE; | |
| 393 } /* end RelinquishCapabilities */ | |
| 394 | |
| 395 | |
| 396 // capabilities_ptr - pre-checked for NULL | |
| 397 jvmtiError | |
| 398 JvmtiEnv::GetCapabilities(jvmtiCapabilities* capabilities_ptr) { | |
| 399 JvmtiManageCapabilities::copy_capabilities(get_capabilities(), capabilities_ptr); | |
| 400 return JVMTI_ERROR_NONE; | |
| 401 } /* end GetCapabilities */ | |
| 402 | |
| 403 // | |
| 404 // Class Loader Search functions | |
| 405 // | |
| 406 | |
| 407 // segment - pre-checked for NULL | |
| 408 jvmtiError | |
| 409 JvmtiEnv::AddToBootstrapClassLoaderSearch(const char* segment) { | |
| 410 jvmtiPhase phase = get_phase(); | |
| 411 if (phase == JVMTI_PHASE_ONLOAD) { | |
| 412 Arguments::append_sysclasspath(segment); | |
| 413 return JVMTI_ERROR_NONE; | |
| 1121 | 414 } else if (use_version_1_0_semantics()) { |
| 415 // This JvmtiEnv requested version 1.0 semantics and this function | |
| 416 // is only allowed in the ONLOAD phase in version 1.0 so we need to | |
| 417 // return an error here. | |
| 418 return JVMTI_ERROR_WRONG_PHASE; | |
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419 } else if (phase == JVMTI_PHASE_LIVE) { |
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420 // The phase is checked by the wrapper that called this function, |
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421 // but this thread could be racing with the thread that is |
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422 // terminating the VM so we check one more time. |
| 0 | 423 |
| 424 // create the zip entry | |
| 425 ClassPathZipEntry* zip_entry = ClassLoader::create_class_path_zip_entry(segment); | |
| 426 if (zip_entry == NULL) { | |
| 427 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
| 428 } | |
| 429 | |
| 430 // lock the loader | |
| 431 Thread* thread = Thread::current(); | |
| 432 HandleMark hm; | |
| 433 Handle loader_lock = Handle(thread, SystemDictionary::system_loader_lock()); | |
| 434 | |
| 435 ObjectLocker ol(loader_lock, thread); | |
| 436 | |
| 437 // add the jar file to the bootclasspath | |
| 438 if (TraceClassLoading) { | |
| 439 tty->print_cr("[Opened %s]", zip_entry->name()); | |
| 440 } | |
| 441 ClassLoader::add_to_list(zip_entry); | |
| 442 return JVMTI_ERROR_NONE; | |
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443 } else { |
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444 return JVMTI_ERROR_WRONG_PHASE; |
| 0 | 445 } |
| 446 | |
| 447 } /* end AddToBootstrapClassLoaderSearch */ | |
| 448 | |
| 449 | |
| 450 // segment - pre-checked for NULL | |
| 451 jvmtiError | |
| 452 JvmtiEnv::AddToSystemClassLoaderSearch(const char* segment) { | |
| 453 jvmtiPhase phase = get_phase(); | |
| 454 | |
| 455 if (phase == JVMTI_PHASE_ONLOAD) { | |
| 456 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
| 457 if (strcmp("java.class.path", p->key()) == 0) { | |
| 458 p->append_value(segment); | |
| 459 break; | |
| 460 } | |
| 461 } | |
| 462 return JVMTI_ERROR_NONE; | |
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463 } else if (phase == JVMTI_PHASE_LIVE) { |
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464 // The phase is checked by the wrapper that called this function, |
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465 // but this thread could be racing with the thread that is |
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466 // terminating the VM so we check one more time. |
| 0 | 467 HandleMark hm; |
| 468 | |
| 469 // create the zip entry (which will open the zip file and hence | |
| 470 // check that the segment is indeed a zip file). | |
| 471 ClassPathZipEntry* zip_entry = ClassLoader::create_class_path_zip_entry(segment); | |
| 472 if (zip_entry == NULL) { | |
| 473 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
| 474 } | |
| 475 delete zip_entry; // no longer needed | |
| 476 | |
| 477 // lock the loader | |
| 478 Thread* THREAD = Thread::current(); | |
| 479 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); | |
| 480 | |
| 481 ObjectLocker ol(loader, THREAD); | |
| 482 | |
| 483 // need the path as java.lang.String | |
| 484 Handle path = java_lang_String::create_from_str(segment, THREAD); | |
| 485 if (HAS_PENDING_EXCEPTION) { | |
| 486 CLEAR_PENDING_EXCEPTION; | |
| 487 return JVMTI_ERROR_INTERNAL; | |
| 488 } | |
| 489 | |
| 490 instanceKlassHandle loader_ik(THREAD, loader->klass()); | |
| 491 | |
| 492 // Invoke the appendToClassPathForInstrumentation method - if the method | |
| 493 // is not found it means the loader doesn't support adding to the class path | |
| 494 // in the live phase. | |
| 495 { | |
| 496 JavaValue res(T_VOID); | |
| 497 JavaCalls::call_special(&res, | |
| 498 loader, | |
| 499 loader_ik, | |
| 500 vmSymbolHandles::appendToClassPathForInstrumentation_name(), | |
| 501 vmSymbolHandles::appendToClassPathForInstrumentation_signature(), | |
| 502 path, | |
| 503 THREAD); | |
| 504 if (HAS_PENDING_EXCEPTION) { | |
| 505 symbolOop ex_name = PENDING_EXCEPTION->klass()->klass_part()->name(); | |
| 506 CLEAR_PENDING_EXCEPTION; | |
| 507 | |
| 508 if (ex_name == vmSymbols::java_lang_NoSuchMethodError()) { | |
| 509 return JVMTI_ERROR_CLASS_LOADER_UNSUPPORTED; | |
| 510 } else { | |
| 511 return JVMTI_ERROR_INTERNAL; | |
| 512 } | |
| 513 } | |
| 514 } | |
| 515 | |
| 516 return JVMTI_ERROR_NONE; | |
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517 } else { |
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518 return JVMTI_ERROR_WRONG_PHASE; |
| 0 | 519 } |
| 520 } /* end AddToSystemClassLoaderSearch */ | |
| 521 | |
| 522 // | |
| 523 // General functions | |
| 524 // | |
| 525 | |
| 526 // phase_ptr - pre-checked for NULL | |
| 527 jvmtiError | |
| 528 JvmtiEnv::GetPhase(jvmtiPhase* phase_ptr) { | |
| 529 *phase_ptr = get_phase(); | |
| 530 return JVMTI_ERROR_NONE; | |
| 531 } /* end GetPhase */ | |
| 532 | |
| 533 | |
| 534 jvmtiError | |
| 535 JvmtiEnv::DisposeEnvironment() { | |
| 536 dispose(); | |
| 537 return JVMTI_ERROR_NONE; | |
| 538 } /* end DisposeEnvironment */ | |
| 539 | |
| 540 | |
| 541 // data - NULL is a valid value, must be checked | |
| 542 jvmtiError | |
| 543 JvmtiEnv::SetEnvironmentLocalStorage(const void* data) { | |
| 544 set_env_local_storage(data); | |
| 545 return JVMTI_ERROR_NONE; | |
| 546 } /* end SetEnvironmentLocalStorage */ | |
| 547 | |
| 548 | |
| 549 // data_ptr - pre-checked for NULL | |
| 550 jvmtiError | |
| 551 JvmtiEnv::GetEnvironmentLocalStorage(void** data_ptr) { | |
| 552 *data_ptr = (void*)get_env_local_storage(); | |
| 553 return JVMTI_ERROR_NONE; | |
| 554 } /* end GetEnvironmentLocalStorage */ | |
| 555 | |
| 556 // version_ptr - pre-checked for NULL | |
| 557 jvmtiError | |
| 558 JvmtiEnv::GetVersionNumber(jint* version_ptr) { | |
| 559 *version_ptr = JVMTI_VERSION; | |
| 560 return JVMTI_ERROR_NONE; | |
| 561 } /* end GetVersionNumber */ | |
| 562 | |
| 563 | |
| 564 // name_ptr - pre-checked for NULL | |
| 565 jvmtiError | |
| 566 JvmtiEnv::GetErrorName(jvmtiError error, char** name_ptr) { | |
| 567 if (error < JVMTI_ERROR_NONE || error > JVMTI_ERROR_MAX) { | |
| 568 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
| 569 } | |
| 570 const char *name = JvmtiUtil::error_name(error); | |
| 571 if (name == NULL) { | |
| 572 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
| 573 } | |
| 574 size_t len = strlen(name) + 1; | |
| 575 jvmtiError err = allocate(len, (unsigned char**)name_ptr); | |
| 576 if (err == JVMTI_ERROR_NONE) { | |
| 577 memcpy(*name_ptr, name, len); | |
| 578 } | |
| 579 return err; | |
| 580 } /* end GetErrorName */ | |
| 581 | |
| 582 | |
| 583 jvmtiError | |
| 584 JvmtiEnv::SetVerboseFlag(jvmtiVerboseFlag flag, jboolean value) { | |
| 585 switch (flag) { | |
| 586 case JVMTI_VERBOSE_OTHER: | |
| 587 // ignore | |
| 588 break; | |
| 589 case JVMTI_VERBOSE_CLASS: | |
| 590 TraceClassLoading = value != 0; | |
| 591 TraceClassUnloading = value != 0; | |
| 592 break; | |
| 593 case JVMTI_VERBOSE_GC: | |
| 594 PrintGC = value != 0; | |
| 595 break; | |
| 596 case JVMTI_VERBOSE_JNI: | |
| 597 PrintJNIResolving = value != 0; | |
| 598 break; | |
| 599 default: | |
| 600 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
| 601 }; | |
| 602 return JVMTI_ERROR_NONE; | |
| 603 } /* end SetVerboseFlag */ | |
| 604 | |
| 605 | |
| 606 // format_ptr - pre-checked for NULL | |
| 607 jvmtiError | |
| 608 JvmtiEnv::GetJLocationFormat(jvmtiJlocationFormat* format_ptr) { | |
| 609 *format_ptr = JVMTI_JLOCATION_JVMBCI; | |
| 610 return JVMTI_ERROR_NONE; | |
| 611 } /* end GetJLocationFormat */ | |
| 612 | |
| 613 #ifndef JVMTI_KERNEL | |
| 614 | |
| 615 // | |
| 616 // Thread functions | |
| 617 // | |
| 618 | |
| 619 // Threads_lock NOT held | |
| 620 // thread - NOT pre-checked | |
| 621 // thread_state_ptr - pre-checked for NULL | |
| 622 jvmtiError | |
| 623 JvmtiEnv::GetThreadState(jthread thread, jint* thread_state_ptr) { | |
| 624 jint state; | |
| 625 oop thread_oop; | |
| 626 JavaThread* thr; | |
| 627 | |
| 628 if (thread == NULL) { | |
| 629 thread_oop = JavaThread::current()->threadObj(); | |
| 630 } else { | |
| 631 thread_oop = JNIHandles::resolve_external_guard(thread); | |
| 632 } | |
| 633 | |
| 1142 | 634 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) { |
| 0 | 635 return JVMTI_ERROR_INVALID_THREAD; |
| 636 } | |
| 637 | |
| 638 // get most state bits | |
| 639 state = (jint)java_lang_Thread::get_thread_status(thread_oop); | |
| 640 | |
| 641 // add more state bits | |
| 642 thr = java_lang_Thread::thread(thread_oop); | |
| 643 if (thr != NULL) { | |
| 644 JavaThreadState jts = thr->thread_state(); | |
| 645 | |
| 646 if (thr->is_being_ext_suspended()) { | |
| 647 state |= JVMTI_THREAD_STATE_SUSPENDED; | |
| 648 } | |
| 649 if (jts == _thread_in_native) { | |
| 650 state |= JVMTI_THREAD_STATE_IN_NATIVE; | |
| 651 } | |
| 652 OSThread* osThread = thr->osthread(); | |
| 653 if (osThread != NULL && osThread->interrupted()) { | |
| 654 state |= JVMTI_THREAD_STATE_INTERRUPTED; | |
| 655 } | |
| 656 } | |
| 657 | |
| 658 *thread_state_ptr = state; | |
| 659 return JVMTI_ERROR_NONE; | |
| 660 } /* end GetThreadState */ | |
| 661 | |
| 662 | |
| 663 // thread_ptr - pre-checked for NULL | |
| 664 jvmtiError | |
| 665 JvmtiEnv::GetCurrentThread(jthread* thread_ptr) { | |
| 666 JavaThread* current_thread = JavaThread::current(); | |
| 667 *thread_ptr = (jthread)JNIHandles::make_local(current_thread, current_thread->threadObj()); | |
| 668 return JVMTI_ERROR_NONE; | |
| 669 } /* end GetCurrentThread */ | |
| 670 | |
| 671 | |
| 672 // threads_count_ptr - pre-checked for NULL | |
| 673 // threads_ptr - pre-checked for NULL | |
| 674 jvmtiError | |
| 675 JvmtiEnv::GetAllThreads(jint* threads_count_ptr, jthread** threads_ptr) { | |
| 676 int nthreads = 0; | |
| 677 Handle *thread_objs = NULL; | |
| 678 ResourceMark rm; | |
| 679 HandleMark hm; | |
| 680 | |
| 681 // enumerate threads (including agent threads) | |
| 682 ThreadsListEnumerator tle(Thread::current(), true); | |
| 683 nthreads = tle.num_threads(); | |
| 684 *threads_count_ptr = nthreads; | |
| 685 | |
| 686 if (nthreads == 0) { | |
| 687 *threads_ptr = NULL; | |
| 688 return JVMTI_ERROR_NONE; | |
| 689 } | |
| 690 | |
| 691 thread_objs = NEW_RESOURCE_ARRAY(Handle, nthreads); | |
| 692 NULL_CHECK(thread_objs, JVMTI_ERROR_OUT_OF_MEMORY); | |
| 693 | |
| 694 for (int i=0; i < nthreads; i++) { | |
| 695 thread_objs[i] = Handle(tle.get_threadObj(i)); | |
| 696 } | |
| 697 | |
| 698 // have to make global handles outside of Threads_lock | |
| 699 jthread *jthreads = new_jthreadArray(nthreads, thread_objs); | |
| 700 NULL_CHECK(jthreads, JVMTI_ERROR_OUT_OF_MEMORY); | |
| 701 | |
| 702 *threads_ptr = jthreads; | |
| 703 return JVMTI_ERROR_NONE; | |
| 704 } /* end GetAllThreads */ | |
| 705 | |
| 706 | |
| 707 // Threads_lock NOT held, java_thread not protected by lock | |
| 708 // java_thread - pre-checked | |
| 709 jvmtiError | |
| 710 JvmtiEnv::SuspendThread(JavaThread* java_thread) { | |
| 711 // don't allow hidden thread suspend request. | |
| 712 if (java_thread->is_hidden_from_external_view()) { | |
| 713 return (JVMTI_ERROR_NONE); | |
| 714 } | |
| 715 | |
| 716 { | |
| 717 MutexLockerEx ml(java_thread->SR_lock(), Mutex::_no_safepoint_check_flag); | |
| 718 if (java_thread->is_external_suspend()) { | |
| 719 // don't allow nested external suspend requests. | |
| 720 return (JVMTI_ERROR_THREAD_SUSPENDED); | |
| 721 } | |
| 722 if (java_thread->is_exiting()) { // thread is in the process of exiting | |
| 723 return (JVMTI_ERROR_THREAD_NOT_ALIVE); | |
| 724 } | |
| 725 java_thread->set_external_suspend(); | |
| 726 } | |
| 727 | |
| 728 if (!JvmtiSuspendControl::suspend(java_thread)) { | |
| 729 // the thread was in the process of exiting | |
| 730 return (JVMTI_ERROR_THREAD_NOT_ALIVE); | |
| 731 } | |
| 732 return JVMTI_ERROR_NONE; | |
| 733 } /* end SuspendThread */ | |
| 734 | |
| 735 | |
| 736 // request_count - pre-checked to be greater than or equal to 0 | |
| 737 // request_list - pre-checked for NULL | |
| 738 // results - pre-checked for NULL | |
| 739 jvmtiError | |
| 740 JvmtiEnv::SuspendThreadList(jint request_count, const jthread* request_list, jvmtiError* results) { | |
| 741 int needSafepoint = 0; // > 0 if we need a safepoint | |
| 742 for (int i = 0; i < request_count; i++) { | |
| 743 JavaThread *java_thread = get_JavaThread(request_list[i]); | |
| 744 if (java_thread == NULL) { | |
| 745 results[i] = JVMTI_ERROR_INVALID_THREAD; | |
| 746 continue; | |
| 747 } | |
| 748 // the thread has not yet run or has exited (not on threads list) | |
| 749 if (java_thread->threadObj() == NULL) { | |
| 750 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
| 751 continue; | |
| 752 } | |
| 753 if (java_lang_Thread::thread(java_thread->threadObj()) == NULL) { | |
| 754 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
| 755 continue; | |
| 756 } | |
| 757 // don't allow hidden thread suspend request. | |
| 758 if (java_thread->is_hidden_from_external_view()) { | |
| 759 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend | |
| 760 continue; | |
| 761 } | |
| 762 | |
| 763 { | |
| 764 MutexLockerEx ml(java_thread->SR_lock(), Mutex::_no_safepoint_check_flag); | |
| 765 if (java_thread->is_external_suspend()) { | |
| 766 // don't allow nested external suspend requests. | |
| 767 results[i] = JVMTI_ERROR_THREAD_SUSPENDED; | |
| 768 continue; | |
| 769 } | |
| 770 if (java_thread->is_exiting()) { // thread is in the process of exiting | |
| 771 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
| 772 continue; | |
| 773 } | |
| 774 java_thread->set_external_suspend(); | |
| 775 } | |
| 776 if (java_thread->thread_state() == _thread_in_native) { | |
| 777 // We need to try and suspend native threads here. Threads in | |
| 778 // other states will self-suspend on their next transition. | |
| 779 if (!JvmtiSuspendControl::suspend(java_thread)) { | |
| 780 // The thread was in the process of exiting. Force another | |
| 781 // safepoint to make sure that this thread transitions. | |
| 782 needSafepoint++; | |
| 783 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
| 784 continue; | |
| 785 } | |
| 786 } else { | |
| 787 needSafepoint++; | |
| 788 } | |
| 789 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend | |
| 790 } | |
| 791 if (needSafepoint > 0) { | |
| 792 VM_ForceSafepoint vfs; | |
| 793 VMThread::execute(&vfs); | |
| 794 } | |
| 795 // per-thread suspend results returned via results parameter | |
| 796 return JVMTI_ERROR_NONE; | |
| 797 } /* end SuspendThreadList */ | |
| 798 | |
| 799 | |
| 800 // Threads_lock NOT held, java_thread not protected by lock | |
| 801 // java_thread - pre-checked | |
| 802 jvmtiError | |
| 803 JvmtiEnv::ResumeThread(JavaThread* java_thread) { | |
| 804 // don't allow hidden thread resume request. | |
| 805 if (java_thread->is_hidden_from_external_view()) { | |
| 806 return JVMTI_ERROR_NONE; | |
| 807 } | |
| 808 | |
| 809 if (!java_thread->is_being_ext_suspended()) { | |
| 810 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
| 811 } | |
| 812 | |
| 813 if (!JvmtiSuspendControl::resume(java_thread)) { | |
| 814 return JVMTI_ERROR_INTERNAL; | |
| 815 } | |
| 816 return JVMTI_ERROR_NONE; | |
| 817 } /* end ResumeThread */ | |
| 818 | |
| 819 | |
| 820 // request_count - pre-checked to be greater than or equal to 0 | |
| 821 // request_list - pre-checked for NULL | |
| 822 // results - pre-checked for NULL | |
| 823 jvmtiError | |
| 824 JvmtiEnv::ResumeThreadList(jint request_count, const jthread* request_list, jvmtiError* results) { | |
| 825 for (int i = 0; i < request_count; i++) { | |
| 826 JavaThread *java_thread = get_JavaThread(request_list[i]); | |
| 827 if (java_thread == NULL) { | |
| 828 results[i] = JVMTI_ERROR_INVALID_THREAD; | |
| 829 continue; | |
| 830 } | |
| 831 // don't allow hidden thread resume request. | |
| 832 if (java_thread->is_hidden_from_external_view()) { | |
| 833 results[i] = JVMTI_ERROR_NONE; // indicate successful resume | |
| 834 continue; | |
| 835 } | |
| 836 if (!java_thread->is_being_ext_suspended()) { | |
| 837 results[i] = JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
| 838 continue; | |
| 839 } | |
| 840 | |
| 841 if (!JvmtiSuspendControl::resume(java_thread)) { | |
| 842 results[i] = JVMTI_ERROR_INTERNAL; | |
| 843 continue; | |
| 844 } | |
| 845 | |
| 846 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend | |
| 847 } | |
| 848 // per-thread resume results returned via results parameter | |
| 849 return JVMTI_ERROR_NONE; | |
| 850 } /* end ResumeThreadList */ | |
| 851 | |
| 852 | |
| 853 // Threads_lock NOT held, java_thread not protected by lock | |
| 854 // java_thread - pre-checked | |
| 855 jvmtiError | |
| 856 JvmtiEnv::StopThread(JavaThread* java_thread, jobject exception) { | |
| 857 oop e = JNIHandles::resolve_external_guard(exception); | |
| 858 NULL_CHECK(e, JVMTI_ERROR_NULL_POINTER); | |
| 859 | |
| 860 JavaThread::send_async_exception(java_thread->threadObj(), e); | |
| 861 | |
| 862 return JVMTI_ERROR_NONE; | |
| 863 | |
| 864 } /* end StopThread */ | |
| 865 | |
| 866 | |
| 867 // Threads_lock NOT held | |
| 868 // thread - NOT pre-checked | |
| 869 jvmtiError | |
| 870 JvmtiEnv::InterruptThread(jthread thread) { | |
| 871 oop thread_oop = JNIHandles::resolve_external_guard(thread); | |
| 1142 | 872 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) |
| 0 | 873 return JVMTI_ERROR_INVALID_THREAD; |
| 874 | |
| 875 JavaThread* current_thread = JavaThread::current(); | |
| 876 | |
| 877 // Todo: this is a duplicate of JVM_Interrupt; share code in future | |
| 878 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 879 MutexLockerEx ml(current_thread->threadObj() == thread_oop ? NULL : Threads_lock); | |
| 880 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 881 // acquire of the lock | |
| 882 | |
| 883 JavaThread* java_thread = java_lang_Thread::thread(JNIHandles::resolve_external_guard(thread)); | |
| 884 NULL_CHECK(java_thread, JVMTI_ERROR_THREAD_NOT_ALIVE); | |
| 885 | |
| 886 Thread::interrupt(java_thread); | |
| 887 | |
| 888 return JVMTI_ERROR_NONE; | |
| 889 } /* end InterruptThread */ | |
| 890 | |
| 891 | |
| 892 // Threads_lock NOT held | |
| 893 // thread - NOT pre-checked | |
| 894 // info_ptr - pre-checked for NULL | |
| 895 jvmtiError | |
| 896 JvmtiEnv::GetThreadInfo(jthread thread, jvmtiThreadInfo* info_ptr) { | |
| 897 ResourceMark rm; | |
| 898 HandleMark hm; | |
| 899 | |
| 900 JavaThread* current_thread = JavaThread::current(); | |
| 901 | |
| 902 // if thread is NULL the current thread is used | |
| 903 oop thread_oop; | |
| 904 if (thread == NULL) { | |
| 905 thread_oop = current_thread->threadObj(); | |
| 906 } else { | |
| 907 thread_oop = JNIHandles::resolve_external_guard(thread); | |
| 908 } | |
| 1142 | 909 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) |
| 0 | 910 return JVMTI_ERROR_INVALID_THREAD; |
| 911 | |
| 912 Handle thread_obj(current_thread, thread_oop); | |
| 913 typeArrayHandle name; | |
| 914 ThreadPriority priority; | |
| 915 Handle thread_group; | |
| 916 Handle context_class_loader; | |
| 917 bool is_daemon; | |
| 918 | |
| 919 { MutexLocker mu(Threads_lock); | |
| 920 | |
| 921 name = typeArrayHandle(current_thread, java_lang_Thread::name(thread_obj())); | |
| 922 priority = java_lang_Thread::priority(thread_obj()); | |
| 923 thread_group = Handle(current_thread, java_lang_Thread::threadGroup(thread_obj())); | |
| 924 is_daemon = java_lang_Thread::is_daemon(thread_obj()); | |
| 925 | |
| 926 oop loader = java_lang_Thread::context_class_loader(thread_obj()); | |
| 927 context_class_loader = Handle(current_thread, loader); | |
| 928 } | |
| 929 { const char *n; | |
| 930 | |
| 931 if (name() != NULL) { | |
| 932 n = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length()); | |
| 933 } else { | |
| 934 n = UNICODE::as_utf8(NULL, 0); | |
| 935 } | |
| 936 | |
| 937 info_ptr->name = (char *) jvmtiMalloc(strlen(n)+1); | |
| 938 if (info_ptr->name == NULL) | |
| 939 return JVMTI_ERROR_OUT_OF_MEMORY; | |
| 940 | |
| 941 strcpy(info_ptr->name, n); | |
| 942 } | |
| 943 info_ptr->is_daemon = is_daemon; | |
| 944 info_ptr->priority = priority; | |
| 945 | |
| 946 info_ptr->context_class_loader = (context_class_loader.is_null()) ? NULL : | |
| 947 jni_reference(context_class_loader); | |
| 948 info_ptr->thread_group = jni_reference(thread_group); | |
| 949 | |
| 950 return JVMTI_ERROR_NONE; | |
| 951 } /* end GetThreadInfo */ | |
| 952 | |
| 953 | |
| 954 // Threads_lock NOT held, java_thread not protected by lock | |
| 955 // java_thread - pre-checked | |
| 956 // owned_monitor_count_ptr - pre-checked for NULL | |
| 957 // owned_monitors_ptr - pre-checked for NULL | |
| 958 jvmtiError | |
| 959 JvmtiEnv::GetOwnedMonitorInfo(JavaThread* java_thread, jint* owned_monitor_count_ptr, jobject** owned_monitors_ptr) { | |
| 960 jvmtiError err = JVMTI_ERROR_NONE; | |
| 961 JavaThread* calling_thread = JavaThread::current(); | |
| 962 | |
| 963 // growable array of jvmti monitors info on the C-heap | |
| 964 GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list = | |
| 965 new (ResourceObj::C_HEAP) GrowableArray<jvmtiMonitorStackDepthInfo*>(1, true); | |
| 966 | |
| 967 uint32_t debug_bits = 0; | |
| 968 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
| 969 err = get_owned_monitors(calling_thread, java_thread, owned_monitors_list); | |
| 970 } else { | |
| 971 // JVMTI get monitors info at safepoint. Do not require target thread to | |
| 972 // be suspended. | |
| 973 VM_GetOwnedMonitorInfo op(this, calling_thread, java_thread, owned_monitors_list); | |
| 974 VMThread::execute(&op); | |
| 975 err = op.result(); | |
| 976 } | |
| 977 jint owned_monitor_count = owned_monitors_list->length(); | |
| 978 if (err == JVMTI_ERROR_NONE) { | |
| 979 if ((err = allocate(owned_monitor_count * sizeof(jobject *), | |
| 980 (unsigned char**)owned_monitors_ptr)) == JVMTI_ERROR_NONE) { | |
| 981 // copy into the returned array | |
| 982 for (int i = 0; i < owned_monitor_count; i++) { | |
| 983 (*owned_monitors_ptr)[i] = | |
| 984 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->monitor; | |
| 985 } | |
| 986 *owned_monitor_count_ptr = owned_monitor_count; | |
| 987 } | |
| 988 } | |
| 989 // clean up. | |
| 990 for (int i = 0; i < owned_monitor_count; i++) { | |
| 991 deallocate((unsigned char*)owned_monitors_list->at(i)); | |
| 992 } | |
| 993 delete owned_monitors_list; | |
| 994 | |
| 995 return err; | |
| 996 } /* end GetOwnedMonitorInfo */ | |
| 997 | |
| 998 | |
| 999 // Threads_lock NOT held, java_thread not protected by lock | |
| 1000 // java_thread - pre-checked | |
| 1001 // monitor_info_count_ptr - pre-checked for NULL | |
| 1002 // monitor_info_ptr - pre-checked for NULL | |
| 1003 jvmtiError | |
| 1004 JvmtiEnv::GetOwnedMonitorStackDepthInfo(JavaThread* java_thread, jint* monitor_info_count_ptr, jvmtiMonitorStackDepthInfo** monitor_info_ptr) { | |
| 1005 jvmtiError err = JVMTI_ERROR_NONE; | |
| 1006 JavaThread* calling_thread = JavaThread::current(); | |
| 1007 | |
| 1008 // growable array of jvmti monitors info on the C-heap | |
| 1009 GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list = | |
| 1010 new (ResourceObj::C_HEAP) GrowableArray<jvmtiMonitorStackDepthInfo*>(1, true); | |
| 1011 | |
| 1012 uint32_t debug_bits = 0; | |
| 1013 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
| 1014 err = get_owned_monitors(calling_thread, java_thread, owned_monitors_list); | |
| 1015 } else { | |
| 1016 // JVMTI get owned monitors info at safepoint. Do not require target thread to | |
| 1017 // be suspended. | |
| 1018 VM_GetOwnedMonitorInfo op(this, calling_thread, java_thread, owned_monitors_list); | |
| 1019 VMThread::execute(&op); | |
| 1020 err = op.result(); | |
| 1021 } | |
| 1022 | |
| 1023 jint owned_monitor_count = owned_monitors_list->length(); | |
| 1024 if (err == JVMTI_ERROR_NONE) { | |
| 1025 if ((err = allocate(owned_monitor_count * sizeof(jvmtiMonitorStackDepthInfo), | |
| 1026 (unsigned char**)monitor_info_ptr)) == JVMTI_ERROR_NONE) { | |
| 1027 // copy to output array. | |
| 1028 for (int i = 0; i < owned_monitor_count; i++) { | |
| 1029 (*monitor_info_ptr)[i].monitor = | |
| 1030 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->monitor; | |
| 1031 (*monitor_info_ptr)[i].stack_depth = | |
| 1032 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->stack_depth; | |
| 1033 } | |
| 1034 } | |
| 1035 *monitor_info_count_ptr = owned_monitor_count; | |
| 1036 } | |
| 1037 | |
| 1038 // clean up. | |
| 1039 for (int i = 0; i < owned_monitor_count; i++) { | |
| 1040 deallocate((unsigned char*)owned_monitors_list->at(i)); | |
| 1041 } | |
| 1042 delete owned_monitors_list; | |
| 1043 | |
| 1044 return err; | |
| 1045 } /* end GetOwnedMonitorStackDepthInfo */ | |
| 1046 | |
| 1047 | |
| 1048 // Threads_lock NOT held, java_thread not protected by lock | |
| 1049 // java_thread - pre-checked | |
| 1050 // monitor_ptr - pre-checked for NULL | |
| 1051 jvmtiError | |
| 1052 JvmtiEnv::GetCurrentContendedMonitor(JavaThread* java_thread, jobject* monitor_ptr) { | |
| 1053 jvmtiError err = JVMTI_ERROR_NONE; | |
| 1054 uint32_t debug_bits = 0; | |
| 1055 JavaThread* calling_thread = JavaThread::current(); | |
| 1056 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
| 1057 err = get_current_contended_monitor(calling_thread, java_thread, monitor_ptr); | |
| 1058 } else { | |
| 1059 // get contended monitor information at safepoint. | |
| 1060 VM_GetCurrentContendedMonitor op(this, calling_thread, java_thread, monitor_ptr); | |
| 1061 VMThread::execute(&op); | |
| 1062 err = op.result(); | |
| 1063 } | |
| 1064 return err; | |
| 1065 } /* end GetCurrentContendedMonitor */ | |
| 1066 | |
| 1067 | |
| 1068 // Threads_lock NOT held | |
| 1069 // thread - NOT pre-checked | |
| 1070 // proc - pre-checked for NULL | |
| 1071 // arg - NULL is a valid value, must be checked | |
| 1072 jvmtiError | |
| 1073 JvmtiEnv::RunAgentThread(jthread thread, jvmtiStartFunction proc, const void* arg, jint priority) { | |
| 1074 oop thread_oop = JNIHandles::resolve_external_guard(thread); | |
| 1142 | 1075 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) { |
| 0 | 1076 return JVMTI_ERROR_INVALID_THREAD; |
| 1077 } | |
| 1078 if (priority < JVMTI_THREAD_MIN_PRIORITY || priority > JVMTI_THREAD_MAX_PRIORITY) { | |
| 1079 return JVMTI_ERROR_INVALID_PRIORITY; | |
| 1080 } | |
| 1081 | |
| 1082 //Thread-self | |
| 1083 JavaThread* current_thread = JavaThread::current(); | |
| 1084 | |
| 1085 Handle thread_hndl(current_thread, thread_oop); | |
| 1086 { | |
| 1087 MutexLocker mu(Threads_lock); // grab Threads_lock | |
| 1088 | |
| 1089 JvmtiAgentThread *new_thread = new JvmtiAgentThread(this, proc, arg); | |
| 1090 | |
| 1091 // At this point it may be possible that no osthread was created for the | |
| 1092 // JavaThread due to lack of memory. | |
| 1093 if (new_thread == NULL || new_thread->osthread() == NULL) { | |
| 1094 if (new_thread) delete new_thread; | |
| 1095 return JVMTI_ERROR_OUT_OF_MEMORY; | |
| 1096 } | |
| 1097 | |
| 1098 java_lang_Thread::set_thread(thread_hndl(), new_thread); | |
| 1099 java_lang_Thread::set_priority(thread_hndl(), (ThreadPriority)priority); | |
| 1100 java_lang_Thread::set_daemon(thread_hndl()); | |
| 1101 | |
| 1102 new_thread->set_threadObj(thread_hndl()); | |
| 1103 Threads::add(new_thread); | |
| 1104 Thread::start(new_thread); | |
| 1105 } // unlock Threads_lock | |
| 1106 | |
| 1107 return JVMTI_ERROR_NONE; | |
| 1108 } /* end RunAgentThread */ | |
| 1109 | |
| 1110 // | |
| 1111 // Thread Group functions | |
| 1112 // | |
| 1113 | |
| 1114 // group_count_ptr - pre-checked for NULL | |
| 1115 // groups_ptr - pre-checked for NULL | |
| 1116 jvmtiError | |
| 1117 JvmtiEnv::GetTopThreadGroups(jint* group_count_ptr, jthreadGroup** groups_ptr) { | |
| 1118 JavaThread* current_thread = JavaThread::current(); | |
| 1119 | |
| 1120 // Only one top level thread group now. | |
| 1121 *group_count_ptr = 1; | |
| 1122 | |
| 1123 // Allocate memory to store global-refs to the thread groups. | |
| 1124 // Assume this area is freed by caller. | |
| 1125 *groups_ptr = (jthreadGroup *) jvmtiMalloc((sizeof(jthreadGroup)) * (*group_count_ptr)); | |
| 1126 | |
| 1127 NULL_CHECK(*groups_ptr, JVMTI_ERROR_OUT_OF_MEMORY); | |
| 1128 | |
| 1129 // Convert oop to Handle, then convert Handle to global-ref. | |
| 1130 { | |
| 1131 HandleMark hm(current_thread); | |
| 1132 Handle system_thread_group(current_thread, Universe::system_thread_group()); | |
| 1133 *groups_ptr[0] = jni_reference(system_thread_group); | |
| 1134 } | |
| 1135 | |
| 1136 return JVMTI_ERROR_NONE; | |
| 1137 } /* end GetTopThreadGroups */ | |
| 1138 | |
| 1139 | |
| 1140 // info_ptr - pre-checked for NULL | |
| 1141 jvmtiError | |
| 1142 JvmtiEnv::GetThreadGroupInfo(jthreadGroup group, jvmtiThreadGroupInfo* info_ptr) { | |
| 1143 ResourceMark rm; | |
| 1144 HandleMark hm; | |
| 1145 | |
| 1146 JavaThread* current_thread = JavaThread::current(); | |
| 1147 | |
| 1148 Handle group_obj (current_thread, JNIHandles::resolve_external_guard(group)); | |
| 1149 NULL_CHECK(group_obj(), JVMTI_ERROR_INVALID_THREAD_GROUP); | |
| 1150 | |
| 1151 typeArrayHandle name; | |
| 1152 Handle parent_group; | |
| 1153 bool is_daemon; | |
| 1154 ThreadPriority max_priority; | |
| 1155 | |
| 1156 { MutexLocker mu(Threads_lock); | |
| 1157 | |
| 1158 name = typeArrayHandle(current_thread, | |
| 1159 java_lang_ThreadGroup::name(group_obj())); | |
| 1160 parent_group = Handle(current_thread, java_lang_ThreadGroup::parent(group_obj())); | |
| 1161 is_daemon = java_lang_ThreadGroup::is_daemon(group_obj()); | |
| 1162 max_priority = java_lang_ThreadGroup::maxPriority(group_obj()); | |
| 1163 } | |
| 1164 | |
| 1165 info_ptr->is_daemon = is_daemon; | |
| 1166 info_ptr->max_priority = max_priority; | |
| 1167 info_ptr->parent = jni_reference(parent_group); | |
| 1168 | |
| 1169 if (name() != NULL) { | |
| 1170 const char* n = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length()); | |
| 1171 info_ptr->name = (char *)jvmtiMalloc(strlen(n)+1); | |
| 1172 NULL_CHECK(info_ptr->name, JVMTI_ERROR_OUT_OF_MEMORY); | |
| 1173 strcpy(info_ptr->name, n); | |
| 1174 } else { | |
| 1175 info_ptr->name = NULL; | |
| 1176 } | |
| 1177 | |
| 1178 return JVMTI_ERROR_NONE; | |
| 1179 } /* end GetThreadGroupInfo */ | |
| 1180 | |
| 1181 | |
| 1182 // thread_count_ptr - pre-checked for NULL | |
| 1183 // threads_ptr - pre-checked for NULL | |
| 1184 // group_count_ptr - pre-checked for NULL | |
| 1185 // groups_ptr - pre-checked for NULL | |
| 1186 jvmtiError | |
| 1187 JvmtiEnv::GetThreadGroupChildren(jthreadGroup group, jint* thread_count_ptr, jthread** threads_ptr, jint* group_count_ptr, jthreadGroup** groups_ptr) { | |
| 1188 JavaThread* current_thread = JavaThread::current(); | |
| 1189 oop group_obj = (oop) JNIHandles::resolve_external_guard(group); | |
| 1190 NULL_CHECK(group_obj, JVMTI_ERROR_INVALID_THREAD_GROUP); | |
| 1191 | |
| 1192 Handle *thread_objs = NULL; | |
| 1193 Handle *group_objs = NULL; | |
| 1194 int nthreads = 0; | |
| 1195 int ngroups = 0; | |
| 1196 int hidden_threads = 0; | |
| 1197 | |
| 1198 ResourceMark rm; | |
| 1199 HandleMark hm; | |
| 1200 | |
| 1201 Handle group_hdl(current_thread, group_obj); | |
| 1202 | |
| 1203 { MutexLocker mu(Threads_lock); | |
| 1204 | |
| 1205 nthreads = java_lang_ThreadGroup::nthreads(group_hdl()); | |
| 1206 ngroups = java_lang_ThreadGroup::ngroups(group_hdl()); | |
| 1207 | |
| 1208 if (nthreads > 0) { | |
| 1209 objArrayOop threads = java_lang_ThreadGroup::threads(group_hdl()); | |
| 1210 assert(nthreads <= threads->length(), "too many threads"); | |
| 1211 thread_objs = NEW_RESOURCE_ARRAY(Handle,nthreads); | |
| 1212 for (int i=0, j=0; i<nthreads; i++) { | |
| 1213 oop thread_obj = threads->obj_at(i); | |
| 1214 assert(thread_obj != NULL, "thread_obj is NULL"); | |
| 1215 JavaThread *javathread = java_lang_Thread::thread(thread_obj); | |
| 1216 // Filter out hidden java threads. | |
| 1217 if (javathread != NULL && javathread->is_hidden_from_external_view()) { | |
| 1218 hidden_threads++; | |
| 1219 continue; | |
| 1220 } | |
| 1221 thread_objs[j++] = Handle(current_thread, thread_obj); | |
| 1222 } | |
| 1223 nthreads -= hidden_threads; | |
| 1224 } | |
| 1225 if (ngroups > 0) { | |
| 1226 objArrayOop groups = java_lang_ThreadGroup::groups(group_hdl()); | |
| 1227 assert(ngroups <= groups->length(), "too many threads"); | |
| 1228 group_objs = NEW_RESOURCE_ARRAY(Handle,ngroups); | |
| 1229 for (int i=0; i<ngroups; i++) { | |
| 1230 oop group_obj = groups->obj_at(i); | |
| 1231 assert(group_obj != NULL, "group_obj != NULL"); | |
| 1232 group_objs[i] = Handle(current_thread, group_obj); | |
| 1233 } | |
| 1234 } | |
| 1235 } | |
| 1236 | |
| 1237 // have to make global handles outside of Threads_lock | |
| 1238 *group_count_ptr = ngroups; | |
| 1239 *thread_count_ptr = nthreads; | |
| 1240 *threads_ptr = new_jthreadArray(nthreads, thread_objs); | |
| 1241 *groups_ptr = new_jthreadGroupArray(ngroups, group_objs); | |
| 1242 if ((nthreads > 0) && (*threads_ptr == NULL)) { | |
| 1243 return JVMTI_ERROR_OUT_OF_MEMORY; | |
| 1244 } | |
| 1245 if ((ngroups > 0) && (*groups_ptr == NULL)) { | |
| 1246 return JVMTI_ERROR_OUT_OF_MEMORY; | |
| 1247 } | |
| 1248 | |
| 1249 return JVMTI_ERROR_NONE; | |
| 1250 } /* end GetThreadGroupChildren */ | |
| 1251 | |
| 1252 | |
| 1253 // | |
| 1254 // Stack Frame functions | |
| 1255 // | |
| 1256 | |
| 1257 // Threads_lock NOT held, java_thread not protected by lock | |
| 1258 // java_thread - pre-checked | |
| 1259 // max_frame_count - pre-checked to be greater than or equal to 0 | |
| 1260 // frame_buffer - pre-checked for NULL | |
| 1261 // count_ptr - pre-checked for NULL | |
| 1262 jvmtiError | |
| 1263 JvmtiEnv::GetStackTrace(JavaThread* java_thread, jint start_depth, jint max_frame_count, jvmtiFrameInfo* frame_buffer, jint* count_ptr) { | |
| 1264 jvmtiError err = JVMTI_ERROR_NONE; | |
| 1265 uint32_t debug_bits = 0; | |
| 1266 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
| 1267 err = get_stack_trace(java_thread, start_depth, max_frame_count, frame_buffer, count_ptr); | |
| 1268 } else { | |
| 1269 // JVMTI get stack trace at safepoint. Do not require target thread to | |
| 1270 // be suspended. | |
| 1271 VM_GetStackTrace op(this, java_thread, start_depth, max_frame_count, frame_buffer, count_ptr); | |
| 1272 VMThread::execute(&op); | |
| 1273 err = op.result(); | |
| 1274 } | |
| 1275 | |
| 1276 return err; | |
| 1277 } /* end GetStackTrace */ | |
| 1278 | |
| 1279 | |
| 1280 // max_frame_count - pre-checked to be greater than or equal to 0 | |
| 1281 // stack_info_ptr - pre-checked for NULL | |
| 1282 // thread_count_ptr - pre-checked for NULL | |
| 1283 jvmtiError | |
| 1284 JvmtiEnv::GetAllStackTraces(jint max_frame_count, jvmtiStackInfo** stack_info_ptr, jint* thread_count_ptr) { | |
| 1285 jvmtiError err = JVMTI_ERROR_NONE; | |
| 1286 JavaThread* calling_thread = JavaThread::current(); | |
| 1287 | |
| 1288 // JVMTI get stack traces at safepoint. | |
| 1289 VM_GetAllStackTraces op(this, calling_thread, max_frame_count); | |
| 1290 VMThread::execute(&op); | |
| 1291 *thread_count_ptr = op.final_thread_count(); | |
| 1292 *stack_info_ptr = op.stack_info(); | |
| 1293 err = op.result(); | |
| 1294 return err; | |
| 1295 } /* end GetAllStackTraces */ | |
| 1296 | |
| 1297 | |
| 1298 // thread_count - pre-checked to be greater than or equal to 0 | |
| 1299 // thread_list - pre-checked for NULL | |
| 1300 // max_frame_count - pre-checked to be greater than or equal to 0 | |
| 1301 // stack_info_ptr - pre-checked for NULL | |
| 1302 jvmtiError | |
| 1303 JvmtiEnv::GetThreadListStackTraces(jint thread_count, const jthread* thread_list, jint max_frame_count, jvmtiStackInfo** stack_info_ptr) { | |
| 1304 jvmtiError err = JVMTI_ERROR_NONE; | |
| 1305 // JVMTI get stack traces at safepoint. | |
| 1306 VM_GetThreadListStackTraces op(this, thread_count, thread_list, max_frame_count); | |
| 1307 VMThread::execute(&op); | |
| 1308 err = op.result(); | |
| 1309 if (err == JVMTI_ERROR_NONE) { | |
| 1310 *stack_info_ptr = op.stack_info(); | |
| 1311 } | |
| 1312 return err; | |
| 1313 } /* end GetThreadListStackTraces */ | |
| 1314 | |
| 1315 | |
| 1316 // Threads_lock NOT held, java_thread not protected by lock | |
| 1317 // java_thread - pre-checked | |
| 1318 // count_ptr - pre-checked for NULL | |
| 1319 jvmtiError | |
| 1320 JvmtiEnv::GetFrameCount(JavaThread* java_thread, jint* count_ptr) { | |
| 1321 jvmtiError err = JVMTI_ERROR_NONE; | |
| 1322 | |
| 1323 // retrieve or create JvmtiThreadState. | |
| 1324 JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread); | |
|
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1325 if (state == NULL) { |
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1326 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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1327 } |
| 0 | 1328 uint32_t debug_bits = 0; |
| 1329 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
| 1330 err = get_frame_count(state, count_ptr); | |
| 1331 } else { | |
| 1332 // get java stack frame count at safepoint. | |
| 1333 VM_GetFrameCount op(this, state, count_ptr); | |
| 1334 VMThread::execute(&op); | |
| 1335 err = op.result(); | |
| 1336 } | |
| 1337 return err; | |
| 1338 } /* end GetFrameCount */ | |
| 1339 | |
| 1340 | |
| 1341 // Threads_lock NOT held, java_thread not protected by lock | |
| 1342 // java_thread - pre-checked | |
| 1343 jvmtiError | |
| 1344 JvmtiEnv::PopFrame(JavaThread* java_thread) { | |
| 1345 JavaThread* current_thread = JavaThread::current(); | |
| 1346 HandleMark hm(current_thread); | |
| 1347 uint32_t debug_bits = 0; | |
| 1348 | |
|
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1349 // retrieve or create the state |
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1350 JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread); |
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1351 if (state == NULL) { |
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1352 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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1353 } |
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1354 |
| 0 | 1355 // Check if java_thread is fully suspended |
| 1356 if (!is_thread_fully_suspended(java_thread, true /* wait for suspend completion */, &debug_bits)) { | |
| 1357 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
| 1358 } | |
| 1359 // Check to see if a PopFrame was already in progress | |
| 1360 if (java_thread->popframe_condition() != JavaThread::popframe_inactive) { | |
| 1361 // Probably possible for JVMTI clients to trigger this, but the | |
| 1362 // JPDA backend shouldn't allow this to happen | |
| 1363 return JVMTI_ERROR_INTERNAL; | |
| 1364 } | |
| 1365 | |
| 1366 { | |
| 1367 // Was workaround bug | |
| 1368 // 4812902: popFrame hangs if the method is waiting at a synchronize | |
| 1369 // Catch this condition and return an error to avoid hanging. | |
| 1370 // Now JVMTI spec allows an implementation to bail out with an opaque frame error. | |
| 1371 OSThread* osThread = java_thread->osthread(); | |
| 1372 if (osThread->get_state() == MONITOR_WAIT) { | |
| 1373 return JVMTI_ERROR_OPAQUE_FRAME; | |
| 1374 } | |
| 1375 } | |
| 1376 | |
| 1377 { | |
| 1378 ResourceMark rm(current_thread); | |
| 1379 // Check if there are more than one Java frame in this thread, that the top two frames | |
| 1380 // are Java (not native) frames, and that there is no intervening VM frame | |
| 1381 int frame_count = 0; | |
| 1382 bool is_interpreted[2]; | |
| 1383 intptr_t *frame_sp[2]; | |
| 1384 // The 2-nd arg of constructor is needed to stop iterating at java entry frame. | |
| 1385 for (vframeStream vfs(java_thread, true); !vfs.at_end(); vfs.next()) { | |
| 1386 methodHandle mh(current_thread, vfs.method()); | |
| 1387 if (mh->is_native()) return(JVMTI_ERROR_OPAQUE_FRAME); | |
| 1388 is_interpreted[frame_count] = vfs.is_interpreted_frame(); | |
| 1389 frame_sp[frame_count] = vfs.frame_id(); | |
| 1390 if (++frame_count > 1) break; | |
| 1391 } | |
| 1392 if (frame_count < 2) { | |
| 1393 // We haven't found two adjacent non-native Java frames on the top. | |
| 1394 // There can be two situations here: | |
| 1395 // 1. There are no more java frames | |
| 1396 // 2. Two top java frames are separated by non-java native frames | |
| 1397 if(vframeFor(java_thread, 1) == NULL) { | |
| 1398 return JVMTI_ERROR_NO_MORE_FRAMES; | |
| 1399 } else { | |
| 1400 // Intervening non-java native or VM frames separate java frames. | |
| 1401 // Current implementation does not support this. See bug #5031735. | |
| 1402 // In theory it is possible to pop frames in such cases. | |
| 1403 return JVMTI_ERROR_OPAQUE_FRAME; | |
| 1404 } | |
| 1405 } | |
| 1406 | |
| 1407 // If any of the top 2 frames is a compiled one, need to deoptimize it | |
| 1408 for (int i = 0; i < 2; i++) { | |
| 1409 if (!is_interpreted[i]) { | |
| 1410 VM_DeoptimizeFrame op(java_thread, frame_sp[i]); | |
| 1411 VMThread::execute(&op); | |
| 1412 } | |
| 1413 } | |
| 1414 | |
| 1415 // Update the thread state to reflect that the top frame is popped | |
| 1416 // so that cur_stack_depth is maintained properly and all frameIDs | |
| 1417 // are invalidated. | |
| 1418 // The current frame will be popped later when the suspended thread | |
| 1419 // is resumed and right before returning from VM to Java. | |
| 1420 // (see call_VM_base() in assembler_<cpu>.cpp). | |
| 1421 | |
| 1422 // It's fine to update the thread state here because no JVMTI events | |
| 1423 // shall be posted for this PopFrame. | |
| 1424 | |
| 1425 state->update_for_pop_top_frame(); | |
| 1426 java_thread->set_popframe_condition(JavaThread::popframe_pending_bit); | |
| 1427 // Set pending step flag for this popframe and it is cleared when next | |
| 1428 // step event is posted. | |
| 1429 state->set_pending_step_for_popframe(); | |
| 1430 } | |
| 1431 | |
| 1432 return JVMTI_ERROR_NONE; | |
| 1433 } /* end PopFrame */ | |
| 1434 | |
| 1435 | |
| 1436 // Threads_lock NOT held, java_thread not protected by lock | |
| 1437 // java_thread - pre-checked | |
| 1438 // java_thread - unchecked | |
| 1439 // depth - pre-checked as non-negative | |
| 1440 // method_ptr - pre-checked for NULL | |
| 1441 // location_ptr - pre-checked for NULL | |
| 1442 jvmtiError | |
| 1443 JvmtiEnv::GetFrameLocation(JavaThread* java_thread, jint depth, jmethodID* method_ptr, jlocation* location_ptr) { | |
| 1444 jvmtiError err = JVMTI_ERROR_NONE; | |
| 1445 uint32_t debug_bits = 0; | |
| 1446 | |
| 1447 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
| 1448 err = get_frame_location(java_thread, depth, method_ptr, location_ptr); | |
| 1449 } else { | |
| 1450 // JVMTI get java stack frame location at safepoint. | |
| 1451 VM_GetFrameLocation op(this, java_thread, depth, method_ptr, location_ptr); | |
| 1452 VMThread::execute(&op); | |
| 1453 err = op.result(); | |
| 1454 } | |
| 1455 return err; | |
| 1456 } /* end GetFrameLocation */ | |
| 1457 | |
| 1458 | |
| 1459 // Threads_lock NOT held, java_thread not protected by lock | |
| 1460 // java_thread - pre-checked | |
| 1461 // java_thread - unchecked | |
| 1462 // depth - pre-checked as non-negative | |
| 1463 jvmtiError | |
| 1464 JvmtiEnv::NotifyFramePop(JavaThread* java_thread, jint depth) { | |
| 1465 ResourceMark rm; | |
| 1466 uint32_t debug_bits = 0; | |
| 1467 | |
|
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1468 JvmtiThreadState *state = JvmtiThreadState::state_for(java_thread); |
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1469 if (state == NULL) { |
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1470 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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1471 } |
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1472 |
| 0 | 1473 if (!JvmtiEnv::is_thread_fully_suspended(java_thread, true, &debug_bits)) { |
| 1474 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
| 1475 } | |
| 1476 | |
| 1477 if (TraceJVMTICalls) { | |
| 1478 JvmtiSuspendControl::print(); | |
| 1479 } | |
| 1480 | |
| 1481 vframe *vf = vframeFor(java_thread, depth); | |
| 1482 if (vf == NULL) { | |
| 1483 return JVMTI_ERROR_NO_MORE_FRAMES; | |
| 1484 } | |
| 1485 | |
| 1486 if (!vf->is_java_frame() || ((javaVFrame*) vf)->method()->is_native()) { | |
| 1487 return JVMTI_ERROR_OPAQUE_FRAME; | |
| 1488 } | |
| 1489 | |
| 1490 assert(vf->frame_pointer() != NULL, "frame pointer mustn't be NULL"); | |
| 1491 | |
| 1492 int frame_number = state->count_frames() - depth; | |
| 1493 state->env_thread_state(this)->set_frame_pop(frame_number); | |
| 1494 | |
| 1495 return JVMTI_ERROR_NONE; | |
| 1496 } /* end NotifyFramePop */ | |
| 1497 | |
| 1498 | |
| 1499 // | |
| 1500 // Force Early Return functions | |
| 1501 // | |
| 1502 | |
| 1503 // Threads_lock NOT held, java_thread not protected by lock | |
| 1504 // java_thread - pre-checked | |
| 1505 jvmtiError | |
| 1506 JvmtiEnv::ForceEarlyReturnObject(JavaThread* java_thread, jobject value) { | |
| 1507 jvalue val; | |
| 1508 val.l = value; | |
| 1509 return force_early_return(java_thread, val, atos); | |
| 1510 } /* end ForceEarlyReturnObject */ | |
| 1511 | |
| 1512 | |
| 1513 // Threads_lock NOT held, java_thread not protected by lock | |
| 1514 // java_thread - pre-checked | |
| 1515 jvmtiError | |
| 1516 JvmtiEnv::ForceEarlyReturnInt(JavaThread* java_thread, jint value) { | |
| 1517 jvalue val; | |
| 1518 val.i = value; | |
| 1519 return force_early_return(java_thread, val, itos); | |
| 1520 } /* end ForceEarlyReturnInt */ | |
| 1521 | |
| 1522 | |
| 1523 // Threads_lock NOT held, java_thread not protected by lock | |
| 1524 // java_thread - pre-checked | |
| 1525 jvmtiError | |
| 1526 JvmtiEnv::ForceEarlyReturnLong(JavaThread* java_thread, jlong value) { | |
| 1527 jvalue val; | |
| 1528 val.j = value; | |
| 1529 return force_early_return(java_thread, val, ltos); | |
| 1530 } /* end ForceEarlyReturnLong */ | |
| 1531 | |
| 1532 | |
| 1533 // Threads_lock NOT held, java_thread not protected by lock | |
| 1534 // java_thread - pre-checked | |
| 1535 jvmtiError | |
| 1536 JvmtiEnv::ForceEarlyReturnFloat(JavaThread* java_thread, jfloat value) { | |
| 1537 jvalue val; | |
| 1538 val.f = value; | |
| 1539 return force_early_return(java_thread, val, ftos); | |
| 1540 } /* end ForceEarlyReturnFloat */ | |
| 1541 | |
| 1542 | |
| 1543 // Threads_lock NOT held, java_thread not protected by lock | |
| 1544 // java_thread - pre-checked | |
| 1545 jvmtiError | |
| 1546 JvmtiEnv::ForceEarlyReturnDouble(JavaThread* java_thread, jdouble value) { | |
| 1547 jvalue val; | |
| 1548 val.d = value; | |
| 1549 return force_early_return(java_thread, val, dtos); | |
| 1550 } /* end ForceEarlyReturnDouble */ | |
| 1551 | |
| 1552 | |
| 1553 // Threads_lock NOT held, java_thread not protected by lock | |
| 1554 // java_thread - pre-checked | |
| 1555 jvmtiError | |
| 1556 JvmtiEnv::ForceEarlyReturnVoid(JavaThread* java_thread) { | |
| 1557 jvalue val; | |
| 1558 val.j = 0L; | |
| 1559 return force_early_return(java_thread, val, vtos); | |
| 1560 } /* end ForceEarlyReturnVoid */ | |
| 1561 | |
| 1562 | |
| 1563 // | |
| 1564 // Heap functions | |
| 1565 // | |
| 1566 | |
| 1567 // klass - NULL is a valid value, must be checked | |
| 1568 // initial_object - NULL is a valid value, must be checked | |
| 1569 // callbacks - pre-checked for NULL | |
| 1570 // user_data - NULL is a valid value, must be checked | |
| 1571 jvmtiError | |
| 1572 JvmtiEnv::FollowReferences(jint heap_filter, jclass klass, jobject initial_object, const jvmtiHeapCallbacks* callbacks, const void* user_data) { | |
| 1573 // check klass if provided | |
| 1574 klassOop k_oop = NULL; | |
| 1575 if (klass != NULL) { | |
| 1576 oop k_mirror = JNIHandles::resolve_external_guard(klass); | |
| 1577 if (k_mirror == NULL) { | |
| 1578 return JVMTI_ERROR_INVALID_CLASS; | |
| 1579 } | |
| 1580 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 1581 return JVMTI_ERROR_NONE; | |
| 1582 } | |
| 1583 k_oop = java_lang_Class::as_klassOop(k_mirror); | |
| 1584 if (k_oop == NULL) { | |
| 1585 return JVMTI_ERROR_INVALID_CLASS; | |
| 1586 } | |
| 1587 } | |
| 1588 | |
| 1589 Thread *thread = Thread::current(); | |
| 1590 HandleMark hm(thread); | |
| 1591 KlassHandle kh (thread, k_oop); | |
| 1592 | |
| 1593 TraceTime t("FollowReferences", TraceJVMTIObjectTagging); | |
| 1594 JvmtiTagMap::tag_map_for(this)->follow_references(heap_filter, kh, initial_object, callbacks, user_data); | |
| 1595 return JVMTI_ERROR_NONE; | |
| 1596 } /* end FollowReferences */ | |
| 1597 | |
| 1598 | |
| 1599 // klass - NULL is a valid value, must be checked | |
| 1600 // callbacks - pre-checked for NULL | |
| 1601 // user_data - NULL is a valid value, must be checked | |
| 1602 jvmtiError | |
| 1603 JvmtiEnv::IterateThroughHeap(jint heap_filter, jclass klass, const jvmtiHeapCallbacks* callbacks, const void* user_data) { | |
| 1604 // check klass if provided | |
| 1605 klassOop k_oop = NULL; | |
| 1606 if (klass != NULL) { | |
| 1607 oop k_mirror = JNIHandles::resolve_external_guard(klass); | |
| 1608 if (k_mirror == NULL) { | |
| 1609 return JVMTI_ERROR_INVALID_CLASS; | |
| 1610 } | |
| 1611 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 1612 return JVMTI_ERROR_NONE; | |
| 1613 } | |
| 1614 k_oop = java_lang_Class::as_klassOop(k_mirror); | |
| 1615 if (k_oop == NULL) { | |
| 1616 return JVMTI_ERROR_INVALID_CLASS; | |
| 1617 } | |
| 1618 } | |
| 1619 | |
| 1620 Thread *thread = Thread::current(); | |
| 1621 HandleMark hm(thread); | |
| 1622 KlassHandle kh (thread, k_oop); | |
| 1623 | |
| 1624 TraceTime t("IterateThroughHeap", TraceJVMTIObjectTagging); | |
| 1625 JvmtiTagMap::tag_map_for(this)->iterate_through_heap(heap_filter, kh, callbacks, user_data); | |
| 1626 return JVMTI_ERROR_NONE; | |
| 1627 } /* end IterateThroughHeap */ | |
| 1628 | |
| 1629 | |
| 1630 // tag_ptr - pre-checked for NULL | |
| 1631 jvmtiError | |
| 1632 JvmtiEnv::GetTag(jobject object, jlong* tag_ptr) { | |
| 1633 oop o = JNIHandles::resolve_external_guard(object); | |
| 1634 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
| 1635 *tag_ptr = JvmtiTagMap::tag_map_for(this)->get_tag(object); | |
| 1636 return JVMTI_ERROR_NONE; | |
| 1637 } /* end GetTag */ | |
| 1638 | |
| 1639 | |
| 1640 jvmtiError | |
| 1641 JvmtiEnv::SetTag(jobject object, jlong tag) { | |
| 1642 oop o = JNIHandles::resolve_external_guard(object); | |
| 1643 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
| 1644 JvmtiTagMap::tag_map_for(this)->set_tag(object, tag); | |
| 1645 return JVMTI_ERROR_NONE; | |
| 1646 } /* end SetTag */ | |
| 1647 | |
| 1648 | |
| 1649 // tag_count - pre-checked to be greater than or equal to 0 | |
| 1650 // tags - pre-checked for NULL | |
| 1651 // count_ptr - pre-checked for NULL | |
| 1652 // object_result_ptr - NULL is a valid value, must be checked | |
| 1653 // tag_result_ptr - NULL is a valid value, must be checked | |
| 1654 jvmtiError | |
| 1655 JvmtiEnv::GetObjectsWithTags(jint tag_count, const jlong* tags, jint* count_ptr, jobject** object_result_ptr, jlong** tag_result_ptr) { | |
| 1656 TraceTime t("GetObjectsWithTags", TraceJVMTIObjectTagging); | |
| 1657 return JvmtiTagMap::tag_map_for(this)->get_objects_with_tags((jlong*)tags, tag_count, count_ptr, object_result_ptr, tag_result_ptr); | |
| 1658 } /* end GetObjectsWithTags */ | |
| 1659 | |
| 1660 | |
| 1661 jvmtiError | |
| 1662 JvmtiEnv::ForceGarbageCollection() { | |
| 1663 Universe::heap()->collect(GCCause::_jvmti_force_gc); | |
| 1664 return JVMTI_ERROR_NONE; | |
| 1665 } /* end ForceGarbageCollection */ | |
| 1666 | |
| 1667 | |
| 1668 // | |
| 1669 // Heap (1.0) functions | |
| 1670 // | |
| 1671 | |
| 1672 // object_reference_callback - pre-checked for NULL | |
| 1673 // user_data - NULL is a valid value, must be checked | |
| 1674 jvmtiError | |
| 1675 JvmtiEnv::IterateOverObjectsReachableFromObject(jobject object, jvmtiObjectReferenceCallback object_reference_callback, const void* user_data) { | |
| 1676 oop o = JNIHandles::resolve_external_guard(object); | |
| 1677 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
| 1678 JvmtiTagMap::tag_map_for(this)->iterate_over_objects_reachable_from_object(object, object_reference_callback, user_data); | |
| 1679 return JVMTI_ERROR_NONE; | |
| 1680 } /* end IterateOverObjectsReachableFromObject */ | |
| 1681 | |
| 1682 | |
| 1683 // heap_root_callback - NULL is a valid value, must be checked | |
| 1684 // stack_ref_callback - NULL is a valid value, must be checked | |
| 1685 // object_ref_callback - NULL is a valid value, must be checked | |
| 1686 // user_data - NULL is a valid value, must be checked | |
| 1687 jvmtiError | |
| 1688 JvmtiEnv::IterateOverReachableObjects(jvmtiHeapRootCallback heap_root_callback, jvmtiStackReferenceCallback stack_ref_callback, jvmtiObjectReferenceCallback object_ref_callback, const void* user_data) { | |
| 1689 TraceTime t("IterateOverReachableObjects", TraceJVMTIObjectTagging); | |
| 1690 JvmtiTagMap::tag_map_for(this)->iterate_over_reachable_objects(heap_root_callback, stack_ref_callback, object_ref_callback, user_data); | |
| 1691 return JVMTI_ERROR_NONE; | |
| 1692 } /* end IterateOverReachableObjects */ | |
| 1693 | |
| 1694 | |
| 1695 // heap_object_callback - pre-checked for NULL | |
| 1696 // user_data - NULL is a valid value, must be checked | |
| 1697 jvmtiError | |
| 1698 JvmtiEnv::IterateOverHeap(jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) { | |
| 1699 TraceTime t("IterateOverHeap", TraceJVMTIObjectTagging); | |
| 1700 Thread *thread = Thread::current(); | |
| 1701 HandleMark hm(thread); | |
| 1702 JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, KlassHandle(), heap_object_callback, user_data); | |
| 1703 return JVMTI_ERROR_NONE; | |
| 1704 } /* end IterateOverHeap */ | |
| 1705 | |
| 1706 | |
| 1707 // k_mirror - may be primitive, this must be checked | |
| 1708 // heap_object_callback - pre-checked for NULL | |
| 1709 // user_data - NULL is a valid value, must be checked | |
| 1710 jvmtiError | |
| 1711 JvmtiEnv::IterateOverInstancesOfClass(oop k_mirror, jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) { | |
| 1712 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 1713 // DO PRIMITIVE CLASS PROCESSING | |
| 1714 return JVMTI_ERROR_NONE; | |
| 1715 } | |
| 1716 klassOop k_oop = java_lang_Class::as_klassOop(k_mirror); | |
| 1717 if (k_oop == NULL) { | |
| 1718 return JVMTI_ERROR_INVALID_CLASS; | |
| 1719 } | |
| 1720 Thread *thread = Thread::current(); | |
| 1721 HandleMark hm(thread); | |
| 1722 KlassHandle klass (thread, k_oop); | |
| 1723 TraceTime t("IterateOverInstancesOfClass", TraceJVMTIObjectTagging); | |
| 1724 JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, klass, heap_object_callback, user_data); | |
| 1725 return JVMTI_ERROR_NONE; | |
| 1726 } /* end IterateOverInstancesOfClass */ | |
| 1727 | |
| 1728 | |
| 1729 // | |
| 1730 // Local Variable functions | |
| 1731 // | |
| 1732 | |
| 1733 // Threads_lock NOT held, java_thread not protected by lock | |
| 1734 // java_thread - pre-checked | |
| 1735 // java_thread - unchecked | |
| 1736 // depth - pre-checked as non-negative | |
| 1737 // value_ptr - pre-checked for NULL | |
| 1738 jvmtiError | |
| 1739 JvmtiEnv::GetLocalObject(JavaThread* java_thread, jint depth, jint slot, jobject* value_ptr) { | |
| 1740 JavaThread* current_thread = JavaThread::current(); | |
| 1741 // rm object is created to clean up the javaVFrame created in | |
| 1742 // doit_prologue(), but after doit() is finished with it. | |
| 1743 ResourceMark rm(current_thread); | |
| 1744 | |
| 1745 VM_GetOrSetLocal op(java_thread, current_thread, depth, slot); | |
| 1746 VMThread::execute(&op); | |
| 1747 jvmtiError err = op.result(); | |
| 1748 if (err != JVMTI_ERROR_NONE) { | |
| 1749 return err; | |
| 1750 } else { | |
| 1751 *value_ptr = op.value().l; | |
| 1752 return JVMTI_ERROR_NONE; | |
| 1753 } | |
| 1754 } /* end GetLocalObject */ | |
| 1755 | |
| 1756 | |
| 1757 // Threads_lock NOT held, java_thread not protected by lock | |
| 1758 // java_thread - pre-checked | |
| 1759 // java_thread - unchecked | |
| 1760 // depth - pre-checked as non-negative | |
| 1761 // value_ptr - pre-checked for NULL | |
| 1762 jvmtiError | |
| 1763 JvmtiEnv::GetLocalInt(JavaThread* java_thread, jint depth, jint slot, jint* value_ptr) { | |
| 1764 // rm object is created to clean up the javaVFrame created in | |
| 1765 // doit_prologue(), but after doit() is finished with it. | |
| 1766 ResourceMark rm; | |
| 1767 | |
| 1768 VM_GetOrSetLocal op(java_thread, depth, slot, T_INT); | |
| 1769 VMThread::execute(&op); | |
| 1770 *value_ptr = op.value().i; | |
| 1771 return op.result(); | |
| 1772 } /* end GetLocalInt */ | |
| 1773 | |
| 1774 | |
| 1775 // Threads_lock NOT held, java_thread not protected by lock | |
| 1776 // java_thread - pre-checked | |
| 1777 // java_thread - unchecked | |
| 1778 // depth - pre-checked as non-negative | |
| 1779 // value_ptr - pre-checked for NULL | |
| 1780 jvmtiError | |
| 1781 JvmtiEnv::GetLocalLong(JavaThread* java_thread, jint depth, jint slot, jlong* value_ptr) { | |
| 1782 // rm object is created to clean up the javaVFrame created in | |
| 1783 // doit_prologue(), but after doit() is finished with it. | |
| 1784 ResourceMark rm; | |
| 1785 | |
| 1786 VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG); | |
| 1787 VMThread::execute(&op); | |
| 1788 *value_ptr = op.value().j; | |
| 1789 return op.result(); | |
| 1790 } /* end GetLocalLong */ | |
| 1791 | |
| 1792 | |
| 1793 // Threads_lock NOT held, java_thread not protected by lock | |
| 1794 // java_thread - pre-checked | |
| 1795 // java_thread - unchecked | |
| 1796 // depth - pre-checked as non-negative | |
| 1797 // value_ptr - pre-checked for NULL | |
| 1798 jvmtiError | |
| 1799 JvmtiEnv::GetLocalFloat(JavaThread* java_thread, jint depth, jint slot, jfloat* value_ptr) { | |
| 1800 // rm object is created to clean up the javaVFrame created in | |
| 1801 // doit_prologue(), but after doit() is finished with it. | |
| 1802 ResourceMark rm; | |
| 1803 | |
| 1804 VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT); | |
| 1805 VMThread::execute(&op); | |
| 1806 *value_ptr = op.value().f; | |
| 1807 return op.result(); | |
| 1808 } /* end GetLocalFloat */ | |
| 1809 | |
| 1810 | |
| 1811 // Threads_lock NOT held, java_thread not protected by lock | |
| 1812 // java_thread - pre-checked | |
| 1813 // java_thread - unchecked | |
| 1814 // depth - pre-checked as non-negative | |
| 1815 // value_ptr - pre-checked for NULL | |
| 1816 jvmtiError | |
| 1817 JvmtiEnv::GetLocalDouble(JavaThread* java_thread, jint depth, jint slot, jdouble* value_ptr) { | |
| 1818 // rm object is created to clean up the javaVFrame created in | |
| 1819 // doit_prologue(), but after doit() is finished with it. | |
| 1820 ResourceMark rm; | |
| 1821 | |
| 1822 VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE); | |
| 1823 VMThread::execute(&op); | |
| 1824 *value_ptr = op.value().d; | |
| 1825 return op.result(); | |
| 1826 } /* end GetLocalDouble */ | |
| 1827 | |
| 1828 | |
| 1829 // Threads_lock NOT held, java_thread not protected by lock | |
| 1830 // java_thread - pre-checked | |
| 1831 // java_thread - unchecked | |
| 1832 // depth - pre-checked as non-negative | |
| 1833 jvmtiError | |
| 1834 JvmtiEnv::SetLocalObject(JavaThread* java_thread, jint depth, jint slot, jobject value) { | |
| 1835 // rm object is created to clean up the javaVFrame created in | |
| 1836 // doit_prologue(), but after doit() is finished with it. | |
| 1837 ResourceMark rm; | |
| 1838 jvalue val; | |
| 1839 val.l = value; | |
| 1840 VM_GetOrSetLocal op(java_thread, depth, slot, T_OBJECT, val); | |
| 1841 VMThread::execute(&op); | |
| 1842 return op.result(); | |
| 1843 } /* end SetLocalObject */ | |
| 1844 | |
| 1845 | |
| 1846 // Threads_lock NOT held, java_thread not protected by lock | |
| 1847 // java_thread - pre-checked | |
| 1848 // java_thread - unchecked | |
| 1849 // depth - pre-checked as non-negative | |
| 1850 jvmtiError | |
| 1851 JvmtiEnv::SetLocalInt(JavaThread* java_thread, jint depth, jint slot, jint value) { | |
| 1852 // rm object is created to clean up the javaVFrame created in | |
| 1853 // doit_prologue(), but after doit() is finished with it. | |
| 1854 ResourceMark rm; | |
| 1855 jvalue val; | |
| 1856 val.i = value; | |
| 1857 VM_GetOrSetLocal op(java_thread, depth, slot, T_INT, val); | |
| 1858 VMThread::execute(&op); | |
| 1859 return op.result(); | |
| 1860 } /* end SetLocalInt */ | |
| 1861 | |
| 1862 | |
| 1863 // Threads_lock NOT held, java_thread not protected by lock | |
| 1864 // java_thread - pre-checked | |
| 1865 // java_thread - unchecked | |
| 1866 // depth - pre-checked as non-negative | |
| 1867 jvmtiError | |
| 1868 JvmtiEnv::SetLocalLong(JavaThread* java_thread, jint depth, jint slot, jlong value) { | |
| 1869 // rm object is created to clean up the javaVFrame created in | |
| 1870 // doit_prologue(), but after doit() is finished with it. | |
| 1871 ResourceMark rm; | |
| 1872 jvalue val; | |
| 1873 val.j = value; | |
| 1874 VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG, val); | |
| 1875 VMThread::execute(&op); | |
| 1876 return op.result(); | |
| 1877 } /* end SetLocalLong */ | |
| 1878 | |
| 1879 | |
| 1880 // Threads_lock NOT held, java_thread not protected by lock | |
| 1881 // java_thread - pre-checked | |
| 1882 // java_thread - unchecked | |
| 1883 // depth - pre-checked as non-negative | |
| 1884 jvmtiError | |
| 1885 JvmtiEnv::SetLocalFloat(JavaThread* java_thread, jint depth, jint slot, jfloat value) { | |
| 1886 // rm object is created to clean up the javaVFrame created in | |
| 1887 // doit_prologue(), but after doit() is finished with it. | |
| 1888 ResourceMark rm; | |
| 1889 jvalue val; | |
| 1890 val.f = value; | |
| 1891 VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT, val); | |
| 1892 VMThread::execute(&op); | |
| 1893 return op.result(); | |
| 1894 } /* end SetLocalFloat */ | |
| 1895 | |
| 1896 | |
| 1897 // Threads_lock NOT held, java_thread not protected by lock | |
| 1898 // java_thread - pre-checked | |
| 1899 // java_thread - unchecked | |
| 1900 // depth - pre-checked as non-negative | |
| 1901 jvmtiError | |
| 1902 JvmtiEnv::SetLocalDouble(JavaThread* java_thread, jint depth, jint slot, jdouble value) { | |
| 1903 // rm object is created to clean up the javaVFrame created in | |
| 1904 // doit_prologue(), but after doit() is finished with it. | |
| 1905 ResourceMark rm; | |
| 1906 jvalue val; | |
| 1907 val.d = value; | |
| 1908 VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE, val); | |
| 1909 VMThread::execute(&op); | |
| 1910 return op.result(); | |
| 1911 } /* end SetLocalDouble */ | |
| 1912 | |
| 1913 | |
| 1914 // | |
| 1915 // Breakpoint functions | |
| 1916 // | |
| 1917 | |
| 1918 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 1919 jvmtiError | |
| 1920 JvmtiEnv::SetBreakpoint(methodOop method_oop, jlocation location) { | |
| 1921 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 1922 if (location < 0) { // simple invalid location check first | |
| 1923 return JVMTI_ERROR_INVALID_LOCATION; | |
| 1924 } | |
| 1925 // verify that the breakpoint is not past the end of the method | |
| 1926 if (location >= (jlocation) method_oop->code_size()) { | |
| 1927 return JVMTI_ERROR_INVALID_LOCATION; | |
| 1928 } | |
| 1929 | |
| 1930 ResourceMark rm; | |
| 1931 JvmtiBreakpoint bp(method_oop, location); | |
| 1932 JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints(); | |
| 1933 if (jvmti_breakpoints.set(bp) == JVMTI_ERROR_DUPLICATE) | |
| 1934 return JVMTI_ERROR_DUPLICATE; | |
| 1935 | |
| 1936 if (TraceJVMTICalls) { | |
| 1937 jvmti_breakpoints.print(); | |
| 1938 } | |
| 1939 | |
| 1940 return JVMTI_ERROR_NONE; | |
| 1941 } /* end SetBreakpoint */ | |
| 1942 | |
| 1943 | |
| 1944 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 1945 jvmtiError | |
| 1946 JvmtiEnv::ClearBreakpoint(methodOop method_oop, jlocation location) { | |
| 1947 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 1948 | |
| 1949 if (location < 0) { // simple invalid location check first | |
| 1950 return JVMTI_ERROR_INVALID_LOCATION; | |
| 1951 } | |
| 1952 | |
| 1953 // verify that the breakpoint is not past the end of the method | |
| 1954 if (location >= (jlocation) method_oop->code_size()) { | |
| 1955 return JVMTI_ERROR_INVALID_LOCATION; | |
| 1956 } | |
| 1957 | |
| 1958 JvmtiBreakpoint bp(method_oop, location); | |
| 1959 | |
| 1960 JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints(); | |
| 1961 if (jvmti_breakpoints.clear(bp) == JVMTI_ERROR_NOT_FOUND) | |
| 1962 return JVMTI_ERROR_NOT_FOUND; | |
| 1963 | |
| 1964 if (TraceJVMTICalls) { | |
| 1965 jvmti_breakpoints.print(); | |
| 1966 } | |
| 1967 | |
| 1968 return JVMTI_ERROR_NONE; | |
| 1969 } /* end ClearBreakpoint */ | |
| 1970 | |
| 1971 | |
| 1972 // | |
| 1973 // Watched Field functions | |
| 1974 // | |
| 1975 | |
| 1976 jvmtiError | |
| 1977 JvmtiEnv::SetFieldAccessWatch(fieldDescriptor* fdesc_ptr) { | |
| 1978 // make sure we haven't set this watch before | |
| 1979 if (fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_DUPLICATE; | |
| 1980 fdesc_ptr->set_is_field_access_watched(true); | |
| 1981 update_klass_field_access_flag(fdesc_ptr); | |
| 1982 | |
| 1983 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, true); | |
| 1984 | |
| 1985 return JVMTI_ERROR_NONE; | |
| 1986 } /* end SetFieldAccessWatch */ | |
| 1987 | |
| 1988 | |
| 1989 jvmtiError | |
| 1990 JvmtiEnv::ClearFieldAccessWatch(fieldDescriptor* fdesc_ptr) { | |
| 1991 // make sure we have a watch to clear | |
| 1992 if (!fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_NOT_FOUND; | |
| 1993 fdesc_ptr->set_is_field_access_watched(false); | |
| 1994 update_klass_field_access_flag(fdesc_ptr); | |
| 1995 | |
| 1996 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, false); | |
| 1997 | |
| 1998 return JVMTI_ERROR_NONE; | |
| 1999 } /* end ClearFieldAccessWatch */ | |
| 2000 | |
| 2001 | |
| 2002 jvmtiError | |
| 2003 JvmtiEnv::SetFieldModificationWatch(fieldDescriptor* fdesc_ptr) { | |
| 2004 // make sure we haven't set this watch before | |
| 2005 if (fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_DUPLICATE; | |
| 2006 fdesc_ptr->set_is_field_modification_watched(true); | |
| 2007 update_klass_field_access_flag(fdesc_ptr); | |
| 2008 | |
| 2009 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, true); | |
| 2010 | |
| 2011 return JVMTI_ERROR_NONE; | |
| 2012 } /* end SetFieldModificationWatch */ | |
| 2013 | |
| 2014 | |
| 2015 jvmtiError | |
| 2016 JvmtiEnv::ClearFieldModificationWatch(fieldDescriptor* fdesc_ptr) { | |
| 2017 // make sure we have a watch to clear | |
| 2018 if (!fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_NOT_FOUND; | |
| 2019 fdesc_ptr->set_is_field_modification_watched(false); | |
| 2020 update_klass_field_access_flag(fdesc_ptr); | |
| 2021 | |
| 2022 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, false); | |
| 2023 | |
| 2024 return JVMTI_ERROR_NONE; | |
| 2025 } /* end ClearFieldModificationWatch */ | |
| 2026 | |
| 2027 // | |
| 2028 // Class functions | |
| 2029 // | |
| 2030 | |
| 2031 | |
| 2032 // k_mirror - may be primitive, this must be checked | |
| 2033 // signature_ptr - NULL is a valid value, must be checked | |
| 2034 // generic_ptr - NULL is a valid value, must be checked | |
| 2035 jvmtiError | |
| 2036 JvmtiEnv::GetClassSignature(oop k_mirror, char** signature_ptr, char** generic_ptr) { | |
| 2037 ResourceMark rm; | |
| 2038 bool isPrimitive = java_lang_Class::is_primitive(k_mirror); | |
| 2039 klassOop k = NULL; | |
| 2040 if (!isPrimitive) { | |
| 2041 k = java_lang_Class::as_klassOop(k_mirror); | |
| 2042 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
| 2043 } | |
| 2044 if (signature_ptr != NULL) { | |
| 2045 char* result = NULL; | |
| 2046 if (isPrimitive) { | |
| 2047 char tchar = type2char(java_lang_Class::primitive_type(k_mirror)); | |
| 2048 result = (char*) jvmtiMalloc(2); | |
| 2049 result[0] = tchar; | |
| 2050 result[1] = '\0'; | |
| 2051 } else { | |
| 2052 const char* class_sig = Klass::cast(k)->signature_name(); | |
| 2053 result = (char *) jvmtiMalloc(strlen(class_sig)+1); | |
| 2054 strcpy(result, class_sig); | |
| 2055 } | |
| 2056 *signature_ptr = result; | |
| 2057 } | |
| 2058 if (generic_ptr != NULL) { | |
| 2059 *generic_ptr = NULL; | |
| 2060 if (!isPrimitive && Klass::cast(k)->oop_is_instance()) { | |
| 2061 symbolOop soo = instanceKlass::cast(k)->generic_signature(); | |
| 2062 if (soo != NULL) { | |
| 2063 const char *gen_sig = soo->as_C_string(); | |
| 2064 if (gen_sig != NULL) { | |
| 2065 char* gen_result; | |
| 2066 jvmtiError err = allocate(strlen(gen_sig) + 1, | |
| 2067 (unsigned char **)&gen_result); | |
| 2068 if (err != JVMTI_ERROR_NONE) { | |
| 2069 return err; | |
| 2070 } | |
| 2071 strcpy(gen_result, gen_sig); | |
| 2072 *generic_ptr = gen_result; | |
| 2073 } | |
| 2074 } | |
| 2075 } | |
| 2076 } | |
| 2077 return JVMTI_ERROR_NONE; | |
| 2078 } /* end GetClassSignature */ | |
| 2079 | |
| 2080 | |
| 2081 // k_mirror - may be primitive, this must be checked | |
| 2082 // status_ptr - pre-checked for NULL | |
| 2083 jvmtiError | |
| 2084 JvmtiEnv::GetClassStatus(oop k_mirror, jint* status_ptr) { | |
| 2085 jint result = 0; | |
| 2086 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2087 result |= JVMTI_CLASS_STATUS_PRIMITIVE; | |
| 2088 } else { | |
| 2089 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
| 2090 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
| 2091 result = Klass::cast(k)->jvmti_class_status(); | |
| 2092 } | |
| 2093 *status_ptr = result; | |
| 2094 | |
| 2095 return JVMTI_ERROR_NONE; | |
| 2096 } /* end GetClassStatus */ | |
| 2097 | |
| 2098 | |
| 2099 // k_mirror - may be primitive, this must be checked | |
| 2100 // source_name_ptr - pre-checked for NULL | |
| 2101 jvmtiError | |
| 2102 JvmtiEnv::GetSourceFileName(oop k_mirror, char** source_name_ptr) { | |
| 2103 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2104 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2105 } | |
| 2106 klassOop k_klass = java_lang_Class::as_klassOop(k_mirror); | |
| 2107 NULL_CHECK(k_klass, JVMTI_ERROR_INVALID_CLASS); | |
| 2108 | |
| 2109 if (!Klass::cast(k_klass)->oop_is_instance()) { | |
| 2110 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2111 } | |
| 2112 | |
| 2113 symbolOop sfnOop = instanceKlass::cast(k_klass)->source_file_name(); | |
| 2114 NULL_CHECK(sfnOop, JVMTI_ERROR_ABSENT_INFORMATION); | |
| 2115 { | |
| 2116 JavaThread* current_thread = JavaThread::current(); | |
| 2117 ResourceMark rm(current_thread); | |
| 2118 const char* sfncp = (const char*) sfnOop->as_C_string(); | |
| 2119 *source_name_ptr = (char *) jvmtiMalloc(strlen(sfncp)+1); | |
| 2120 strcpy(*source_name_ptr, sfncp); | |
| 2121 } | |
| 2122 | |
| 2123 return JVMTI_ERROR_NONE; | |
| 2124 } /* end GetSourceFileName */ | |
| 2125 | |
| 2126 | |
| 2127 // k_mirror - may be primitive, this must be checked | |
| 2128 // modifiers_ptr - pre-checked for NULL | |
| 2129 jvmtiError | |
| 2130 JvmtiEnv::GetClassModifiers(oop k_mirror, jint* modifiers_ptr) { | |
| 2131 JavaThread* current_thread = JavaThread::current(); | |
| 2132 jint result = 0; | |
| 2133 if (!java_lang_Class::is_primitive(k_mirror)) { | |
| 2134 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
| 2135 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
| 2136 assert((Klass::cast(k)->oop_is_instance() || Klass::cast(k)->oop_is_array()), "should be an instance or an array klass"); | |
| 2137 result = Klass::cast(k)->compute_modifier_flags(current_thread); | |
| 2138 JavaThread* THREAD = current_thread; // pass to macros | |
| 2139 if (HAS_PENDING_EXCEPTION) { | |
| 2140 CLEAR_PENDING_EXCEPTION; | |
| 2141 return JVMTI_ERROR_INTERNAL; | |
| 2142 }; | |
| 2143 | |
| 2144 // Reset the deleted ACC_SUPER bit ( deleted in compute_modifier_flags()). | |
| 2145 if(Klass::cast(k)->is_super()) { | |
| 2146 result |= JVM_ACC_SUPER; | |
| 2147 } | |
| 2148 } else { | |
| 2149 result = (JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC); | |
| 2150 } | |
| 2151 *modifiers_ptr = result; | |
| 2152 | |
| 2153 return JVMTI_ERROR_NONE; | |
| 2154 } /* end GetClassModifiers */ | |
| 2155 | |
| 2156 | |
| 2157 // k_mirror - may be primitive, this must be checked | |
| 2158 // method_count_ptr - pre-checked for NULL | |
| 2159 // methods_ptr - pre-checked for NULL | |
| 2160 jvmtiError | |
| 2161 JvmtiEnv::GetClassMethods(oop k_mirror, jint* method_count_ptr, jmethodID** methods_ptr) { | |
| 2162 JavaThread* current_thread = JavaThread::current(); | |
| 2163 HandleMark hm(current_thread); | |
| 2164 | |
| 2165 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2166 *method_count_ptr = 0; | |
| 2167 *methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID)); | |
| 2168 return JVMTI_ERROR_NONE; | |
| 2169 } | |
| 2170 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
| 2171 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
| 2172 | |
| 2173 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
| 2174 if (!(Klass::cast(k)->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) { | |
| 2175 return JVMTI_ERROR_CLASS_NOT_PREPARED; | |
| 2176 } | |
| 2177 | |
| 2178 if (!Klass::cast(k)->oop_is_instance()) { | |
| 2179 *method_count_ptr = 0; | |
| 2180 *methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID)); | |
| 2181 return JVMTI_ERROR_NONE; | |
| 2182 } | |
| 2183 instanceKlassHandle instanceK_h(current_thread, k); | |
| 2184 // Allocate the result and fill it in | |
| 2185 int result_length = instanceK_h->methods()->length(); | |
| 2186 jmethodID* result_list = (jmethodID*)jvmtiMalloc(result_length * sizeof(jmethodID)); | |
| 2187 int index; | |
| 2188 if (JvmtiExport::can_maintain_original_method_order()) { | |
| 2189 // Use the original method ordering indices stored in the class, so we can emit | |
| 2190 // jmethodIDs in the order they appeared in the class file | |
| 2191 for (index = 0; index < result_length; index++) { | |
| 2192 methodOop m = methodOop(instanceK_h->methods()->obj_at(index)); | |
| 2193 int original_index = instanceK_h->method_ordering()->int_at(index); | |
| 2194 assert(original_index >= 0 && original_index < result_length, "invalid original method index"); | |
| 2195 jmethodID id = m->jmethod_id(); | |
| 2196 result_list[original_index] = id; | |
| 2197 } | |
| 2198 } else { | |
| 2199 // otherwise just copy in any order | |
| 2200 for (index = 0; index < result_length; index++) { | |
| 2201 methodOop m = methodOop(instanceK_h->methods()->obj_at(index)); | |
| 2202 jmethodID id = m->jmethod_id(); | |
| 2203 result_list[index] = id; | |
| 2204 } | |
| 2205 } | |
| 2206 // Fill in return value. | |
| 2207 *method_count_ptr = result_length; | |
| 2208 *methods_ptr = result_list; | |
| 2209 | |
| 2210 return JVMTI_ERROR_NONE; | |
| 2211 } /* end GetClassMethods */ | |
| 2212 | |
| 2213 | |
| 2214 // k_mirror - may be primitive, this must be checked | |
| 2215 // field_count_ptr - pre-checked for NULL | |
| 2216 // fields_ptr - pre-checked for NULL | |
| 2217 jvmtiError | |
| 2218 JvmtiEnv::GetClassFields(oop k_mirror, jint* field_count_ptr, jfieldID** fields_ptr) { | |
| 2219 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2220 *field_count_ptr = 0; | |
| 2221 *fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID)); | |
| 2222 return JVMTI_ERROR_NONE; | |
| 2223 } | |
| 2224 JavaThread* current_thread = JavaThread::current(); | |
| 2225 HandleMark hm(current_thread); | |
| 2226 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
| 2227 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
| 2228 | |
| 2229 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
| 2230 if (!(Klass::cast(k)->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) { | |
| 2231 return JVMTI_ERROR_CLASS_NOT_PREPARED; | |
| 2232 } | |
| 2233 | |
| 2234 if (!Klass::cast(k)->oop_is_instance()) { | |
| 2235 *field_count_ptr = 0; | |
| 2236 *fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID)); | |
| 2237 return JVMTI_ERROR_NONE; | |
| 2238 } | |
| 2239 | |
| 2240 | |
| 2241 instanceKlassHandle instanceK_h(current_thread, k); | |
| 2242 | |
| 2243 int result_count = 0; | |
| 2244 // First, count the fields. | |
| 2245 FilteredFieldStream flds(instanceK_h, true, true); | |
| 2246 result_count = flds.field_count(); | |
| 2247 | |
| 2248 // Allocate the result and fill it in | |
| 2249 jfieldID* result_list = (jfieldID*) jvmtiMalloc(result_count * sizeof(jfieldID)); | |
| 2250 // The JVMTI spec requires fields in the order they occur in the class file, | |
| 2251 // this is the reverse order of what FieldStream hands out. | |
| 2252 int id_index = (result_count - 1); | |
| 2253 | |
| 2254 for (FilteredFieldStream src_st(instanceK_h, true, true); !src_st.eos(); src_st.next()) { | |
| 2255 result_list[id_index--] = jfieldIDWorkaround::to_jfieldID( | |
| 2256 instanceK_h, src_st.offset(), | |
| 2257 src_st.access_flags().is_static()); | |
| 2258 } | |
| 2259 assert(id_index == -1, "just checking"); | |
| 2260 // Fill in the results | |
| 2261 *field_count_ptr = result_count; | |
| 2262 *fields_ptr = result_list; | |
| 2263 | |
| 2264 return JVMTI_ERROR_NONE; | |
| 2265 } /* end GetClassFields */ | |
| 2266 | |
| 2267 | |
| 2268 // k_mirror - may be primitive, this must be checked | |
| 2269 // interface_count_ptr - pre-checked for NULL | |
| 2270 // interfaces_ptr - pre-checked for NULL | |
| 2271 jvmtiError | |
| 2272 JvmtiEnv::GetImplementedInterfaces(oop k_mirror, jint* interface_count_ptr, jclass** interfaces_ptr) { | |
| 2273 { | |
| 2274 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2275 *interface_count_ptr = 0; | |
| 2276 *interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass)); | |
| 2277 return JVMTI_ERROR_NONE; | |
| 2278 } | |
| 2279 JavaThread* current_thread = JavaThread::current(); | |
| 2280 HandleMark hm(current_thread); | |
| 2281 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
| 2282 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
| 2283 | |
| 2284 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
| 2285 if (!(Klass::cast(k)->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) | |
| 2286 return JVMTI_ERROR_CLASS_NOT_PREPARED; | |
| 2287 | |
| 2288 if (!Klass::cast(k)->oop_is_instance()) { | |
| 2289 *interface_count_ptr = 0; | |
| 2290 *interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass)); | |
| 2291 return JVMTI_ERROR_NONE; | |
| 2292 } | |
| 2293 | |
| 2294 objArrayHandle interface_list(current_thread, instanceKlass::cast(k)->local_interfaces()); | |
| 2295 const int result_length = (interface_list.is_null() ? 0 : interface_list->length()); | |
| 2296 jclass* result_list = (jclass*) jvmtiMalloc(result_length * sizeof(jclass)); | |
| 2297 for (int i_index = 0; i_index < result_length; i_index += 1) { | |
| 2298 oop oop_at = interface_list->obj_at(i_index); | |
| 2299 assert(oop_at->is_klass(), "interfaces must be klassOops"); | |
| 2300 klassOop klassOop_at = klassOop(oop_at); // ???: is there a better way? | |
| 2301 assert(Klass::cast(klassOop_at)->is_interface(), "interfaces must be interfaces"); | |
| 2302 oop mirror_at = Klass::cast(klassOop_at)->java_mirror(); | |
| 2303 Handle handle_at = Handle(current_thread, mirror_at); | |
| 2304 result_list[i_index] = (jclass) jni_reference(handle_at); | |
| 2305 } | |
| 2306 *interface_count_ptr = result_length; | |
| 2307 *interfaces_ptr = result_list; | |
| 2308 } | |
| 2309 | |
| 2310 return JVMTI_ERROR_NONE; | |
| 2311 } /* end GetImplementedInterfaces */ | |
| 2312 | |
| 2313 | |
| 2314 // k_mirror - may be primitive, this must be checked | |
| 2315 // minor_version_ptr - pre-checked for NULL | |
| 2316 // major_version_ptr - pre-checked for NULL | |
| 2317 jvmtiError | |
| 2318 JvmtiEnv::GetClassVersionNumbers(oop k_mirror, jint* minor_version_ptr, jint* major_version_ptr) { | |
| 2319 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2320 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2321 } | |
| 2322 klassOop k_oop = java_lang_Class::as_klassOop(k_mirror); | |
| 2323 Thread *thread = Thread::current(); | |
| 2324 HandleMark hm(thread); | |
| 2325 KlassHandle klass(thread, k_oop); | |
| 2326 | |
| 2327 jint status = klass->jvmti_class_status(); | |
| 2328 if (status & (JVMTI_CLASS_STATUS_ERROR)) { | |
| 2329 return JVMTI_ERROR_INVALID_CLASS; | |
| 2330 } | |
| 2331 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { | |
| 2332 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2333 } | |
| 2334 | |
| 2335 instanceKlassHandle ik(thread, k_oop); | |
| 2336 *minor_version_ptr = ik->minor_version(); | |
| 2337 *major_version_ptr = ik->major_version(); | |
| 2338 | |
| 2339 return JVMTI_ERROR_NONE; | |
| 2340 } /* end GetClassVersionNumbers */ | |
| 2341 | |
| 2342 | |
| 2343 // k_mirror - may be primitive, this must be checked | |
| 2344 // constant_pool_count_ptr - pre-checked for NULL | |
| 2345 // constant_pool_byte_count_ptr - pre-checked for NULL | |
| 2346 // constant_pool_bytes_ptr - pre-checked for NULL | |
| 2347 jvmtiError | |
| 2348 JvmtiEnv::GetConstantPool(oop k_mirror, jint* constant_pool_count_ptr, jint* constant_pool_byte_count_ptr, unsigned char** constant_pool_bytes_ptr) { | |
| 2349 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2350 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2351 } | |
| 2352 | |
| 2353 klassOop k_oop = java_lang_Class::as_klassOop(k_mirror); | |
| 2354 Thread *thread = Thread::current(); | |
| 2355 HandleMark hm(thread); | |
| 2356 ResourceMark rm(thread); | |
| 2357 KlassHandle klass(thread, k_oop); | |
| 2358 | |
| 2359 jint status = klass->jvmti_class_status(); | |
| 2360 if (status & (JVMTI_CLASS_STATUS_ERROR)) { | |
| 2361 return JVMTI_ERROR_INVALID_CLASS; | |
| 2362 } | |
| 2363 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { | |
| 2364 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2365 } | |
| 2366 | |
| 2367 instanceKlassHandle ikh(thread, k_oop); | |
| 2368 constantPoolHandle constants(thread, ikh->constants()); | |
| 2369 ObjectLocker ol(constants, thread); // lock constant pool while we query it | |
| 2370 | |
| 2371 JvmtiConstantPoolReconstituter reconstituter(ikh); | |
| 2372 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
| 2373 return reconstituter.get_error(); | |
| 2374 } | |
| 2375 | |
| 2376 unsigned char *cpool_bytes; | |
| 2377 int cpool_size = reconstituter.cpool_size(); | |
| 2378 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
| 2379 return reconstituter.get_error(); | |
| 2380 } | |
| 2381 jvmtiError res = allocate(cpool_size, &cpool_bytes); | |
| 2382 if (res != JVMTI_ERROR_NONE) { | |
| 2383 return res; | |
| 2384 } | |
| 2385 reconstituter.copy_cpool_bytes(cpool_bytes); | |
| 2386 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
| 2387 return reconstituter.get_error(); | |
| 2388 } | |
| 2389 | |
| 2390 *constant_pool_count_ptr = constants->length(); | |
| 2391 *constant_pool_byte_count_ptr = cpool_size; | |
| 2392 *constant_pool_bytes_ptr = cpool_bytes; | |
| 2393 | |
| 2394 return JVMTI_ERROR_NONE; | |
| 2395 } /* end GetConstantPool */ | |
| 2396 | |
| 2397 | |
| 2398 // k_mirror - may be primitive, this must be checked | |
| 2399 // is_interface_ptr - pre-checked for NULL | |
| 2400 jvmtiError | |
| 2401 JvmtiEnv::IsInterface(oop k_mirror, jboolean* is_interface_ptr) { | |
| 2402 { | |
| 2403 bool result = false; | |
| 2404 if (!java_lang_Class::is_primitive(k_mirror)) { | |
| 2405 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
| 2406 if (k != NULL && Klass::cast(k)->is_interface()) { | |
| 2407 result = true; | |
| 2408 } | |
| 2409 } | |
| 2410 *is_interface_ptr = result; | |
| 2411 } | |
| 2412 | |
| 2413 return JVMTI_ERROR_NONE; | |
| 2414 } /* end IsInterface */ | |
| 2415 | |
| 2416 | |
| 2417 // k_mirror - may be primitive, this must be checked | |
| 2418 // is_array_class_ptr - pre-checked for NULL | |
| 2419 jvmtiError | |
| 2420 JvmtiEnv::IsArrayClass(oop k_mirror, jboolean* is_array_class_ptr) { | |
| 2421 { | |
| 2422 bool result = false; | |
| 2423 if (!java_lang_Class::is_primitive(k_mirror)) { | |
| 2424 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
| 2425 if (k != NULL && Klass::cast(k)->oop_is_array()) { | |
| 2426 result = true; | |
| 2427 } | |
| 2428 } | |
| 2429 *is_array_class_ptr = result; | |
| 2430 } | |
| 2431 | |
| 2432 return JVMTI_ERROR_NONE; | |
| 2433 } /* end IsArrayClass */ | |
| 2434 | |
| 2435 | |
| 2436 // k_mirror - may be primitive, this must be checked | |
| 2437 // classloader_ptr - pre-checked for NULL | |
| 2438 jvmtiError | |
| 2439 JvmtiEnv::GetClassLoader(oop k_mirror, jobject* classloader_ptr) { | |
| 2440 { | |
| 2441 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2442 *classloader_ptr = (jclass) jni_reference(Handle()); | |
| 2443 return JVMTI_ERROR_NONE; | |
| 2444 } | |
| 2445 JavaThread* current_thread = JavaThread::current(); | |
| 2446 HandleMark hm(current_thread); | |
| 2447 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
| 2448 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
| 2449 | |
| 2450 oop result_oop = Klass::cast(k)->class_loader(); | |
| 2451 if (result_oop == NULL) { | |
| 2452 *classloader_ptr = (jclass) jni_reference(Handle()); | |
| 2453 return JVMTI_ERROR_NONE; | |
| 2454 } | |
| 2455 Handle result_handle = Handle(current_thread, result_oop); | |
| 2456 jclass result_jnihandle = (jclass) jni_reference(result_handle); | |
| 2457 *classloader_ptr = result_jnihandle; | |
| 2458 } | |
| 2459 return JVMTI_ERROR_NONE; | |
| 2460 } /* end GetClassLoader */ | |
| 2461 | |
| 2462 | |
| 2463 // k_mirror - may be primitive, this must be checked | |
| 2464 // source_debug_extension_ptr - pre-checked for NULL | |
| 2465 jvmtiError | |
| 2466 JvmtiEnv::GetSourceDebugExtension(oop k_mirror, char** source_debug_extension_ptr) { | |
| 2467 { | |
| 2468 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2469 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2470 } | |
| 2471 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
| 2472 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
| 2473 if (!Klass::cast(k)->oop_is_instance()) { | |
| 2474 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2475 } | |
| 2476 symbolOop sdeOop = instanceKlass::cast(k)->source_debug_extension(); | |
| 2477 NULL_CHECK(sdeOop, JVMTI_ERROR_ABSENT_INFORMATION); | |
| 2478 | |
| 2479 { | |
| 2480 JavaThread* current_thread = JavaThread::current(); | |
| 2481 ResourceMark rm(current_thread); | |
| 2482 const char* sdecp = (const char*) sdeOop->as_C_string(); | |
| 2483 *source_debug_extension_ptr = (char *) jvmtiMalloc(strlen(sdecp)+1); | |
| 2484 strcpy(*source_debug_extension_ptr, sdecp); | |
| 2485 } | |
| 2486 } | |
| 2487 | |
| 2488 return JVMTI_ERROR_NONE; | |
| 2489 } /* end GetSourceDebugExtension */ | |
| 2490 | |
| 2491 // | |
| 2492 // Object functions | |
| 2493 // | |
| 2494 | |
| 2495 // hash_code_ptr - pre-checked for NULL | |
| 2496 jvmtiError | |
| 2497 JvmtiEnv::GetObjectHashCode(jobject object, jint* hash_code_ptr) { | |
| 2498 oop mirror = JNIHandles::resolve_external_guard(object); | |
| 2499 NULL_CHECK(mirror, JVMTI_ERROR_INVALID_OBJECT); | |
| 2500 NULL_CHECK(hash_code_ptr, JVMTI_ERROR_NULL_POINTER); | |
| 2501 | |
| 2502 { | |
| 2503 jint result = (jint) mirror->identity_hash(); | |
| 2504 *hash_code_ptr = result; | |
| 2505 } | |
| 2506 return JVMTI_ERROR_NONE; | |
| 2507 } /* end GetObjectHashCode */ | |
| 2508 | |
| 2509 | |
| 2510 // info_ptr - pre-checked for NULL | |
| 2511 jvmtiError | |
| 2512 JvmtiEnv::GetObjectMonitorUsage(jobject object, jvmtiMonitorUsage* info_ptr) { | |
| 2513 JavaThread* calling_thread = JavaThread::current(); | |
| 2514 jvmtiError err = get_object_monitor_usage(calling_thread, object, info_ptr); | |
| 2515 if (err == JVMTI_ERROR_THREAD_NOT_SUSPENDED) { | |
| 2516 // Some of the critical threads were not suspended. go to a safepoint and try again | |
| 2517 VM_GetObjectMonitorUsage op(this, calling_thread, object, info_ptr); | |
| 2518 VMThread::execute(&op); | |
| 2519 err = op.result(); | |
| 2520 } | |
| 2521 return err; | |
| 2522 } /* end GetObjectMonitorUsage */ | |
| 2523 | |
| 2524 | |
| 2525 // | |
| 2526 // Field functions | |
| 2527 // | |
| 2528 | |
| 2529 // name_ptr - NULL is a valid value, must be checked | |
| 2530 // signature_ptr - NULL is a valid value, must be checked | |
| 2531 // generic_ptr - NULL is a valid value, must be checked | |
| 2532 jvmtiError | |
| 2533 JvmtiEnv::GetFieldName(fieldDescriptor* fdesc_ptr, char** name_ptr, char** signature_ptr, char** generic_ptr) { | |
| 2534 JavaThread* current_thread = JavaThread::current(); | |
| 2535 ResourceMark rm(current_thread); | |
| 2536 if (name_ptr == NULL) { | |
| 2537 // just don't return the name | |
| 2538 } else { | |
| 2539 const char* fieldName = fdesc_ptr->name()->as_C_string(); | |
| 2540 *name_ptr = (char*) jvmtiMalloc(strlen(fieldName) + 1); | |
| 2541 if (*name_ptr == NULL) | |
| 2542 return JVMTI_ERROR_OUT_OF_MEMORY; | |
| 2543 strcpy(*name_ptr, fieldName); | |
| 2544 } | |
| 2545 if (signature_ptr== NULL) { | |
| 2546 // just don't return the signature | |
| 2547 } else { | |
| 2548 const char* fieldSignature = fdesc_ptr->signature()->as_C_string(); | |
| 2549 *signature_ptr = (char*) jvmtiMalloc(strlen(fieldSignature) + 1); | |
| 2550 if (*signature_ptr == NULL) | |
| 2551 return JVMTI_ERROR_OUT_OF_MEMORY; | |
| 2552 strcpy(*signature_ptr, fieldSignature); | |
| 2553 } | |
| 2554 if (generic_ptr != NULL) { | |
| 2555 *generic_ptr = NULL; | |
| 2556 symbolOop soop = fdesc_ptr->generic_signature(); | |
| 2557 if (soop != NULL) { | |
| 2558 const char* gen_sig = soop->as_C_string(); | |
| 2559 if (gen_sig != NULL) { | |
| 2560 jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr); | |
| 2561 if (err != JVMTI_ERROR_NONE) { | |
| 2562 return err; | |
| 2563 } | |
| 2564 strcpy(*generic_ptr, gen_sig); | |
| 2565 } | |
| 2566 } | |
| 2567 } | |
| 2568 return JVMTI_ERROR_NONE; | |
| 2569 } /* end GetFieldName */ | |
| 2570 | |
| 2571 | |
| 2572 // declaring_class_ptr - pre-checked for NULL | |
| 2573 jvmtiError | |
| 2574 JvmtiEnv::GetFieldDeclaringClass(fieldDescriptor* fdesc_ptr, jclass* declaring_class_ptr) { | |
| 2575 | |
| 2576 *declaring_class_ptr = get_jni_class_non_null(fdesc_ptr->field_holder()); | |
| 2577 return JVMTI_ERROR_NONE; | |
| 2578 } /* end GetFieldDeclaringClass */ | |
| 2579 | |
| 2580 | |
| 2581 // modifiers_ptr - pre-checked for NULL | |
| 2582 jvmtiError | |
| 2583 JvmtiEnv::GetFieldModifiers(fieldDescriptor* fdesc_ptr, jint* modifiers_ptr) { | |
| 2584 | |
| 2585 AccessFlags resultFlags = fdesc_ptr->access_flags(); | |
| 2586 jint result = resultFlags.as_int(); | |
| 2587 *modifiers_ptr = result; | |
| 2588 | |
| 2589 return JVMTI_ERROR_NONE; | |
| 2590 } /* end GetFieldModifiers */ | |
| 2591 | |
| 2592 | |
| 2593 // is_synthetic_ptr - pre-checked for NULL | |
| 2594 jvmtiError | |
| 2595 JvmtiEnv::IsFieldSynthetic(fieldDescriptor* fdesc_ptr, jboolean* is_synthetic_ptr) { | |
| 2596 *is_synthetic_ptr = fdesc_ptr->is_synthetic(); | |
| 2597 return JVMTI_ERROR_NONE; | |
| 2598 } /* end IsFieldSynthetic */ | |
| 2599 | |
| 2600 | |
| 2601 // | |
| 2602 // Method functions | |
| 2603 // | |
| 2604 | |
| 2605 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2606 // name_ptr - NULL is a valid value, must be checked | |
| 2607 // signature_ptr - NULL is a valid value, must be checked | |
| 2608 // generic_ptr - NULL is a valid value, must be checked | |
| 2609 jvmtiError | |
| 2610 JvmtiEnv::GetMethodName(methodOop method_oop, char** name_ptr, char** signature_ptr, char** generic_ptr) { | |
| 2611 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2612 JavaThread* current_thread = JavaThread::current(); | |
| 2613 | |
| 2614 ResourceMark rm(current_thread); // get the utf8 name and signature | |
| 2615 if (name_ptr == NULL) { | |
| 2616 // just don't return the name | |
| 2617 } else { | |
| 2618 const char* utf8_name = (const char *) method_oop->name()->as_utf8(); | |
| 2619 *name_ptr = (char *) jvmtiMalloc(strlen(utf8_name)+1); | |
| 2620 strcpy(*name_ptr, utf8_name); | |
| 2621 } | |
| 2622 if (signature_ptr == NULL) { | |
| 2623 // just don't return the signature | |
| 2624 } else { | |
| 2625 const char* utf8_signature = (const char *) method_oop->signature()->as_utf8(); | |
| 2626 *signature_ptr = (char *) jvmtiMalloc(strlen(utf8_signature) + 1); | |
| 2627 strcpy(*signature_ptr, utf8_signature); | |
| 2628 } | |
| 2629 | |
| 2630 if (generic_ptr != NULL) { | |
| 2631 *generic_ptr = NULL; | |
| 2632 symbolOop soop = method_oop->generic_signature(); | |
| 2633 if (soop != NULL) { | |
| 2634 const char* gen_sig = soop->as_C_string(); | |
| 2635 if (gen_sig != NULL) { | |
| 2636 jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr); | |
| 2637 if (err != JVMTI_ERROR_NONE) { | |
| 2638 return err; | |
| 2639 } | |
| 2640 strcpy(*generic_ptr, gen_sig); | |
| 2641 } | |
| 2642 } | |
| 2643 } | |
| 2644 return JVMTI_ERROR_NONE; | |
| 2645 } /* end GetMethodName */ | |
| 2646 | |
| 2647 | |
| 2648 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2649 // declaring_class_ptr - pre-checked for NULL | |
| 2650 jvmtiError | |
| 2651 JvmtiEnv::GetMethodDeclaringClass(methodOop method_oop, jclass* declaring_class_ptr) { | |
| 2652 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2653 (*declaring_class_ptr) = get_jni_class_non_null(method_oop->method_holder()); | |
| 2654 return JVMTI_ERROR_NONE; | |
| 2655 } /* end GetMethodDeclaringClass */ | |
| 2656 | |
| 2657 | |
| 2658 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2659 // modifiers_ptr - pre-checked for NULL | |
| 2660 jvmtiError | |
| 2661 JvmtiEnv::GetMethodModifiers(methodOop method_oop, jint* modifiers_ptr) { | |
| 2662 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2663 (*modifiers_ptr) = method_oop->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 2664 return JVMTI_ERROR_NONE; | |
| 2665 } /* end GetMethodModifiers */ | |
| 2666 | |
| 2667 | |
| 2668 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2669 // max_ptr - pre-checked for NULL | |
| 2670 jvmtiError | |
| 2671 JvmtiEnv::GetMaxLocals(methodOop method_oop, jint* max_ptr) { | |
| 2672 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2673 // get max stack | |
| 2674 (*max_ptr) = method_oop->max_locals(); | |
| 2675 return JVMTI_ERROR_NONE; | |
| 2676 } /* end GetMaxLocals */ | |
| 2677 | |
| 2678 | |
| 2679 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2680 // size_ptr - pre-checked for NULL | |
| 2681 jvmtiError | |
| 2682 JvmtiEnv::GetArgumentsSize(methodOop method_oop, jint* size_ptr) { | |
| 2683 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2684 // get size of arguments | |
| 2685 | |
| 2686 (*size_ptr) = method_oop->size_of_parameters(); | |
| 2687 return JVMTI_ERROR_NONE; | |
| 2688 } /* end GetArgumentsSize */ | |
| 2689 | |
| 2690 | |
| 2691 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2692 // entry_count_ptr - pre-checked for NULL | |
| 2693 // table_ptr - pre-checked for NULL | |
| 2694 jvmtiError | |
| 2695 JvmtiEnv::GetLineNumberTable(methodOop method_oop, jint* entry_count_ptr, jvmtiLineNumberEntry** table_ptr) { | |
| 2696 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2697 if (!method_oop->has_linenumber_table()) { | |
| 2698 return (JVMTI_ERROR_ABSENT_INFORMATION); | |
| 2699 } | |
| 2700 | |
| 2701 // The line number table is compressed so we don't know how big it is until decompressed. | |
| 2702 // Decompression is really fast so we just do it twice. | |
| 2703 | |
| 2704 // Compute size of table | |
| 2705 jint num_entries = 0; | |
| 2706 CompressedLineNumberReadStream stream(method_oop->compressed_linenumber_table()); | |
| 2707 while (stream.read_pair()) { | |
| 2708 num_entries++; | |
| 2709 } | |
| 2710 jvmtiLineNumberEntry *jvmti_table = | |
| 2711 (jvmtiLineNumberEntry *)jvmtiMalloc(num_entries * (sizeof(jvmtiLineNumberEntry))); | |
| 2712 | |
| 2713 // Fill jvmti table | |
| 2714 if (num_entries > 0) { | |
| 2715 int index = 0; | |
| 2716 CompressedLineNumberReadStream stream(method_oop->compressed_linenumber_table()); | |
| 2717 while (stream.read_pair()) { | |
| 2718 jvmti_table[index].start_location = (jlocation) stream.bci(); | |
| 2719 jvmti_table[index].line_number = (jint) stream.line(); | |
| 2720 index++; | |
| 2721 } | |
| 2722 assert(index == num_entries, "sanity check"); | |
| 2723 } | |
| 2724 | |
| 2725 // Set up results | |
| 2726 (*entry_count_ptr) = num_entries; | |
| 2727 (*table_ptr) = jvmti_table; | |
| 2728 | |
| 2729 return JVMTI_ERROR_NONE; | |
| 2730 } /* end GetLineNumberTable */ | |
| 2731 | |
| 2732 | |
| 2733 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2734 // start_location_ptr - pre-checked for NULL | |
| 2735 // end_location_ptr - pre-checked for NULL | |
| 2736 jvmtiError | |
| 2737 JvmtiEnv::GetMethodLocation(methodOop method_oop, jlocation* start_location_ptr, jlocation* end_location_ptr) { | |
| 2738 | |
| 2739 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2740 // get start and end location | |
| 2741 (*end_location_ptr) = (jlocation) (method_oop->code_size() - 1); | |
| 2742 if (method_oop->code_size() == 0) { | |
| 2743 // there is no code so there is no start location | |
| 2744 (*start_location_ptr) = (jlocation)(-1); | |
| 2745 } else { | |
| 2746 (*start_location_ptr) = (jlocation)(0); | |
| 2747 } | |
| 2748 | |
| 2749 return JVMTI_ERROR_NONE; | |
| 2750 } /* end GetMethodLocation */ | |
| 2751 | |
| 2752 | |
| 2753 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2754 // entry_count_ptr - pre-checked for NULL | |
| 2755 // table_ptr - pre-checked for NULL | |
| 2756 jvmtiError | |
| 2757 JvmtiEnv::GetLocalVariableTable(methodOop method_oop, jint* entry_count_ptr, jvmtiLocalVariableEntry** table_ptr) { | |
| 2758 | |
| 2759 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2760 JavaThread* current_thread = JavaThread::current(); | |
| 2761 | |
| 2762 // does the klass have any local variable information? | |
| 2763 instanceKlass* ik = instanceKlass::cast(method_oop->method_holder()); | |
| 2764 if (!ik->access_flags().has_localvariable_table()) { | |
| 2765 return (JVMTI_ERROR_ABSENT_INFORMATION); | |
| 2766 } | |
| 2767 | |
| 2768 constantPoolOop constants = method_oop->constants(); | |
| 2769 NULL_CHECK(constants, JVMTI_ERROR_ABSENT_INFORMATION); | |
| 2770 | |
| 2771 // in the vm localvariable table representation, 6 consecutive elements in the table | |
| 2772 // represent a 6-tuple of shorts | |
| 2773 // [start_pc, length, name_index, descriptor_index, signature_index, index] | |
| 2774 jint num_entries = method_oop->localvariable_table_length(); | |
| 2775 jvmtiLocalVariableEntry *jvmti_table = (jvmtiLocalVariableEntry *) | |
| 2776 jvmtiMalloc(num_entries * (sizeof(jvmtiLocalVariableEntry))); | |
| 2777 | |
| 2778 if (num_entries > 0) { | |
| 2779 LocalVariableTableElement* table = method_oop->localvariable_table_start(); | |
| 2780 for (int i = 0; i < num_entries; i++) { | |
| 2781 // get the 5 tuple information from the vm table | |
| 2782 jlocation start_location = (jlocation) table[i].start_bci; | |
| 2783 jint length = (jint) table[i].length; | |
| 2784 int name_index = (int) table[i].name_cp_index; | |
| 2785 int signature_index = (int) table[i].descriptor_cp_index; | |
| 2786 int generic_signature_index = (int) table[i].signature_cp_index; | |
| 2787 jint slot = (jint) table[i].slot; | |
| 2788 | |
| 2789 // get utf8 name and signature | |
| 2790 char *name_buf = NULL; | |
| 2791 char *sig_buf = NULL; | |
| 2792 char *gen_sig_buf = NULL; | |
| 2793 { | |
| 2794 ResourceMark rm(current_thread); | |
| 2795 | |
| 2796 const char *utf8_name = (const char *) constants->symbol_at(name_index)->as_utf8(); | |
| 2797 name_buf = (char *) jvmtiMalloc(strlen(utf8_name)+1); | |
| 2798 strcpy(name_buf, utf8_name); | |
| 2799 | |
| 2800 const char *utf8_signature = (const char *) constants->symbol_at(signature_index)->as_utf8(); | |
| 2801 sig_buf = (char *) jvmtiMalloc(strlen(utf8_signature)+1); | |
| 2802 strcpy(sig_buf, utf8_signature); | |
| 2803 | |
| 2804 if (generic_signature_index > 0) { | |
| 2805 const char *utf8_gen_sign = (const char *) | |
| 2806 constants->symbol_at(generic_signature_index)->as_utf8(); | |
| 2807 gen_sig_buf = (char *) jvmtiMalloc(strlen(utf8_gen_sign)+1); | |
| 2808 strcpy(gen_sig_buf, utf8_gen_sign); | |
| 2809 } | |
| 2810 } | |
| 2811 | |
| 2812 // fill in the jvmti local variable table | |
| 2813 jvmti_table[i].start_location = start_location; | |
| 2814 jvmti_table[i].length = length; | |
| 2815 jvmti_table[i].name = name_buf; | |
| 2816 jvmti_table[i].signature = sig_buf; | |
| 2817 jvmti_table[i].generic_signature = gen_sig_buf; | |
| 2818 jvmti_table[i].slot = slot; | |
| 2819 } | |
| 2820 } | |
| 2821 | |
| 2822 // set results | |
| 2823 (*entry_count_ptr) = num_entries; | |
| 2824 (*table_ptr) = jvmti_table; | |
| 2825 | |
| 2826 return JVMTI_ERROR_NONE; | |
| 2827 } /* end GetLocalVariableTable */ | |
| 2828 | |
| 2829 | |
| 2830 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2831 // bytecode_count_ptr - pre-checked for NULL | |
| 2832 // bytecodes_ptr - pre-checked for NULL | |
| 2833 jvmtiError | |
| 2834 JvmtiEnv::GetBytecodes(methodOop method_oop, jint* bytecode_count_ptr, unsigned char** bytecodes_ptr) { | |
| 2835 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2836 | |
| 2837 HandleMark hm; | |
| 2838 methodHandle method(method_oop); | |
| 2839 jint size = (jint)method->code_size(); | |
| 2840 jvmtiError err = allocate(size, bytecodes_ptr); | |
| 2841 if (err != JVMTI_ERROR_NONE) { | |
| 2842 return err; | |
| 2843 } | |
| 2844 | |
| 2845 (*bytecode_count_ptr) = size; | |
| 2846 // get byte codes | |
| 2847 JvmtiClassFileReconstituter::copy_bytecodes(method, *bytecodes_ptr); | |
| 2848 | |
| 2849 return JVMTI_ERROR_NONE; | |
| 2850 } /* end GetBytecodes */ | |
| 2851 | |
| 2852 | |
| 2853 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2854 // is_native_ptr - pre-checked for NULL | |
| 2855 jvmtiError | |
| 2856 JvmtiEnv::IsMethodNative(methodOop method_oop, jboolean* is_native_ptr) { | |
| 2857 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2858 (*is_native_ptr) = method_oop->is_native(); | |
| 2859 return JVMTI_ERROR_NONE; | |
| 2860 } /* end IsMethodNative */ | |
| 2861 | |
| 2862 | |
| 2863 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2864 // is_synthetic_ptr - pre-checked for NULL | |
| 2865 jvmtiError | |
| 2866 JvmtiEnv::IsMethodSynthetic(methodOop method_oop, jboolean* is_synthetic_ptr) { | |
| 2867 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2868 (*is_synthetic_ptr) = method_oop->is_synthetic(); | |
| 2869 return JVMTI_ERROR_NONE; | |
| 2870 } /* end IsMethodSynthetic */ | |
| 2871 | |
| 2872 | |
| 2873 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2874 // is_obsolete_ptr - pre-checked for NULL | |
| 2875 jvmtiError | |
| 2876 JvmtiEnv::IsMethodObsolete(methodOop method_oop, jboolean* is_obsolete_ptr) { | |
| 1121 | 2877 if (use_version_1_0_semantics() && |
| 2878 get_capabilities()->can_redefine_classes == 0) { | |
| 2879 // This JvmtiEnv requested version 1.0 semantics and this function | |
| 2880 // requires the can_redefine_classes capability in version 1.0 so | |
| 2881 // we need to return an error here. | |
| 2882 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; | |
| 2883 } | |
| 2884 | |
| 0 | 2885 if (method_oop == NULL || method_oop->is_obsolete()) { |
| 2886 *is_obsolete_ptr = true; | |
| 2887 } else { | |
| 2888 *is_obsolete_ptr = false; | |
| 2889 } | |
| 2890 return JVMTI_ERROR_NONE; | |
| 2891 } /* end IsMethodObsolete */ | |
| 2892 | |
| 2893 // | |
| 2894 // Raw Monitor functions | |
| 2895 // | |
| 2896 | |
| 2897 // name - pre-checked for NULL | |
| 2898 // monitor_ptr - pre-checked for NULL | |
| 2899 jvmtiError | |
| 2900 JvmtiEnv::CreateRawMonitor(const char* name, jrawMonitorID* monitor_ptr) { | |
| 2901 JvmtiRawMonitor* rmonitor = new JvmtiRawMonitor(name); | |
| 2902 NULL_CHECK(rmonitor, JVMTI_ERROR_OUT_OF_MEMORY); | |
| 2903 | |
| 2904 *monitor_ptr = (jrawMonitorID)rmonitor; | |
| 2905 | |
| 2906 return JVMTI_ERROR_NONE; | |
| 2907 } /* end CreateRawMonitor */ | |
| 2908 | |
| 2909 | |
| 2910 // rmonitor - pre-checked for validity | |
| 2911 jvmtiError | |
| 2912 JvmtiEnv::DestroyRawMonitor(JvmtiRawMonitor * rmonitor) { | |
| 2913 if (Threads::number_of_threads() == 0) { | |
| 2914 // Remove this monitor from pending raw monitors list | |
| 2915 // if it has entered in onload or start phase. | |
| 2916 JvmtiPendingMonitors::destroy(rmonitor); | |
| 2917 } else { | |
| 2918 Thread* thread = Thread::current(); | |
| 2919 if (rmonitor->is_entered(thread)) { | |
| 2920 // The caller owns this monitor which we are about to destroy. | |
| 2921 // We exit the underlying synchronization object so that the | |
| 2922 // "delete monitor" call below can work without an assertion | |
| 2923 // failure on systems that don't like destroying synchronization | |
| 2924 // objects that are locked. | |
| 2925 int r; | |
| 2926 intptr_t recursion = rmonitor->recursions(); | |
| 2927 for (intptr_t i=0; i <= recursion; i++) { | |
| 2928 r = rmonitor->raw_exit(thread); | |
| 2929 assert(r == ObjectMonitor::OM_OK, "raw_exit should have worked"); | |
| 2930 if (r != ObjectMonitor::OM_OK) { // robustness | |
| 2931 return JVMTI_ERROR_INTERNAL; | |
| 2932 } | |
| 2933 } | |
| 2934 } | |
| 2935 if (rmonitor->owner() != NULL) { | |
| 2936 // The caller is trying to destroy a monitor that is locked by | |
| 2937 // someone else. While this is not forbidden by the JVMTI | |
| 2938 // spec, it will cause an assertion failure on systems that don't | |
| 2939 // like destroying synchronization objects that are locked. | |
| 2940 // We indicate a problem with the error return (and leak the | |
| 2941 // monitor's memory). | |
| 2942 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
| 2943 } | |
| 2944 } | |
| 2945 | |
| 2946 delete rmonitor; | |
| 2947 | |
| 2948 return JVMTI_ERROR_NONE; | |
| 2949 } /* end DestroyRawMonitor */ | |
| 2950 | |
| 2951 | |
| 2952 // rmonitor - pre-checked for validity | |
| 2953 jvmtiError | |
| 2954 JvmtiEnv::RawMonitorEnter(JvmtiRawMonitor * rmonitor) { | |
| 2955 if (Threads::number_of_threads() == 0) { | |
| 2956 // No JavaThreads exist so ObjectMonitor enter cannot be | |
| 2957 // used, add this raw monitor to the pending list. | |
| 2958 // The pending monitors will be actually entered when | |
| 2959 // the VM is setup. | |
| 2960 // See transition_pending_raw_monitors in create_vm() | |
| 2961 // in thread.cpp. | |
| 2962 JvmtiPendingMonitors::enter(rmonitor); | |
| 2963 } else { | |
| 2964 int r; | |
| 2965 Thread* thread = Thread::current(); | |
| 2966 | |
| 2967 if (thread->is_Java_thread()) { | |
| 2968 JavaThread* current_thread = (JavaThread*)thread; | |
| 2969 | |
| 2970 #ifdef PROPER_TRANSITIONS | |
| 2971 // Not really unknown but ThreadInVMfromNative does more than we want | |
| 2972 ThreadInVMfromUnknown __tiv; | |
| 2973 { | |
| 2974 ThreadBlockInVM __tbivm(current_thread); | |
| 2975 r = rmonitor->raw_enter(current_thread); | |
| 2976 } | |
| 2977 #else | |
| 2978 /* Transition to thread_blocked without entering vm state */ | |
| 2979 /* This is really evil. Normally you can't undo _thread_blocked */ | |
| 2980 /* transitions like this because it would cause us to miss a */ | |
| 2981 /* safepoint but since the thread was already in _thread_in_native */ | |
| 2982 /* the thread is not leaving a safepoint safe state and it will */ | |
| 2983 /* block when it tries to return from native. We can't safepoint */ | |
| 2984 /* block in here because we could deadlock the vmthread. Blech. */ | |
| 2985 | |
| 2986 JavaThreadState state = current_thread->thread_state(); | |
| 2987 assert(state == _thread_in_native, "Must be _thread_in_native"); | |
| 2988 // frame should already be walkable since we are in native | |
| 2989 assert(!current_thread->has_last_Java_frame() || | |
| 2990 current_thread->frame_anchor()->walkable(), "Must be walkable"); | |
| 2991 current_thread->set_thread_state(_thread_blocked); | |
| 2992 | |
| 2993 r = rmonitor->raw_enter(current_thread); | |
| 2994 // restore state, still at a safepoint safe state | |
| 2995 current_thread->set_thread_state(state); | |
| 2996 | |
| 2997 #endif /* PROPER_TRANSITIONS */ | |
| 2998 assert(r == ObjectMonitor::OM_OK, "raw_enter should have worked"); | |
| 2999 } else { | |
| 3000 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
| 3001 r = rmonitor->raw_enter(thread); | |
| 3002 } else { | |
| 3003 ShouldNotReachHere(); | |
| 3004 } | |
| 3005 } | |
| 3006 | |
| 3007 if (r != ObjectMonitor::OM_OK) { // robustness | |
| 3008 return JVMTI_ERROR_INTERNAL; | |
| 3009 } | |
| 3010 } | |
| 3011 return JVMTI_ERROR_NONE; | |
| 3012 } /* end RawMonitorEnter */ | |
| 3013 | |
| 3014 | |
| 3015 // rmonitor - pre-checked for validity | |
| 3016 jvmtiError | |
| 3017 JvmtiEnv::RawMonitorExit(JvmtiRawMonitor * rmonitor) { | |
| 3018 jvmtiError err = JVMTI_ERROR_NONE; | |
| 3019 | |
| 3020 if (Threads::number_of_threads() == 0) { | |
| 3021 // No JavaThreads exist so just remove this monitor from the pending list. | |
| 3022 // Bool value from exit is false if rmonitor is not in the list. | |
| 3023 if (!JvmtiPendingMonitors::exit(rmonitor)) { | |
| 3024 err = JVMTI_ERROR_NOT_MONITOR_OWNER; | |
| 3025 } | |
| 3026 } else { | |
| 3027 int r; | |
| 3028 Thread* thread = Thread::current(); | |
| 3029 | |
| 3030 if (thread->is_Java_thread()) { | |
| 3031 JavaThread* current_thread = (JavaThread*)thread; | |
| 3032 #ifdef PROPER_TRANSITIONS | |
| 3033 // Not really unknown but ThreadInVMfromNative does more than we want | |
| 3034 ThreadInVMfromUnknown __tiv; | |
| 3035 #endif /* PROPER_TRANSITIONS */ | |
| 3036 r = rmonitor->raw_exit(current_thread); | |
| 3037 } else { | |
| 3038 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
| 3039 r = rmonitor->raw_exit(thread); | |
| 3040 } else { | |
| 3041 ShouldNotReachHere(); | |
| 3042 } | |
| 3043 } | |
| 3044 | |
| 3045 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
| 3046 err = JVMTI_ERROR_NOT_MONITOR_OWNER; | |
| 3047 } else { | |
| 3048 assert(r == ObjectMonitor::OM_OK, "raw_exit should have worked"); | |
| 3049 if (r != ObjectMonitor::OM_OK) { // robustness | |
| 3050 err = JVMTI_ERROR_INTERNAL; | |
| 3051 } | |
| 3052 } | |
| 3053 } | |
| 3054 return err; | |
| 3055 } /* end RawMonitorExit */ | |
| 3056 | |
| 3057 | |
| 3058 // rmonitor - pre-checked for validity | |
| 3059 jvmtiError | |
| 3060 JvmtiEnv::RawMonitorWait(JvmtiRawMonitor * rmonitor, jlong millis) { | |
| 3061 int r; | |
| 3062 Thread* thread = Thread::current(); | |
| 3063 | |
| 3064 if (thread->is_Java_thread()) { | |
| 3065 JavaThread* current_thread = (JavaThread*)thread; | |
| 3066 #ifdef PROPER_TRANSITIONS | |
| 3067 // Not really unknown but ThreadInVMfromNative does more than we want | |
| 3068 ThreadInVMfromUnknown __tiv; | |
| 3069 { | |
| 3070 ThreadBlockInVM __tbivm(current_thread); | |
| 3071 r = rmonitor->raw_wait(millis, true, current_thread); | |
| 3072 } | |
| 3073 #else | |
| 3074 /* Transition to thread_blocked without entering vm state */ | |
| 3075 /* This is really evil. Normally you can't undo _thread_blocked */ | |
| 3076 /* transitions like this because it would cause us to miss a */ | |
| 3077 /* safepoint but since the thread was already in _thread_in_native */ | |
| 3078 /* the thread is not leaving a safepoint safe state and it will */ | |
| 3079 /* block when it tries to return from native. We can't safepoint */ | |
| 3080 /* block in here because we could deadlock the vmthread. Blech. */ | |
| 3081 | |
| 3082 JavaThreadState state = current_thread->thread_state(); | |
| 3083 assert(state == _thread_in_native, "Must be _thread_in_native"); | |
| 3084 // frame should already be walkable since we are in native | |
| 3085 assert(!current_thread->has_last_Java_frame() || | |
| 3086 current_thread->frame_anchor()->walkable(), "Must be walkable"); | |
| 3087 current_thread->set_thread_state(_thread_blocked); | |
| 3088 | |
| 3089 r = rmonitor->raw_wait(millis, true, current_thread); | |
| 3090 // restore state, still at a safepoint safe state | |
| 3091 current_thread->set_thread_state(state); | |
| 3092 | |
| 3093 #endif /* PROPER_TRANSITIONS */ | |
| 3094 } else { | |
| 3095 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
| 3096 r = rmonitor->raw_wait(millis, true, thread); | |
| 3097 } else { | |
| 3098 ShouldNotReachHere(); | |
| 3099 } | |
| 3100 } | |
| 3101 | |
| 3102 switch (r) { | |
| 3103 case ObjectMonitor::OM_INTERRUPTED: | |
| 3104 return JVMTI_ERROR_INTERRUPT; | |
| 3105 case ObjectMonitor::OM_ILLEGAL_MONITOR_STATE: | |
| 3106 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
| 3107 } | |
| 3108 assert(r == ObjectMonitor::OM_OK, "raw_wait should have worked"); | |
| 3109 if (r != ObjectMonitor::OM_OK) { // robustness | |
| 3110 return JVMTI_ERROR_INTERNAL; | |
| 3111 } | |
| 3112 | |
| 3113 return JVMTI_ERROR_NONE; | |
| 3114 } /* end RawMonitorWait */ | |
| 3115 | |
| 3116 | |
| 3117 // rmonitor - pre-checked for validity | |
| 3118 jvmtiError | |
| 3119 JvmtiEnv::RawMonitorNotify(JvmtiRawMonitor * rmonitor) { | |
| 3120 int r; | |
| 3121 Thread* thread = Thread::current(); | |
| 3122 | |
| 3123 if (thread->is_Java_thread()) { | |
| 3124 JavaThread* current_thread = (JavaThread*)thread; | |
| 3125 // Not really unknown but ThreadInVMfromNative does more than we want | |
| 3126 ThreadInVMfromUnknown __tiv; | |
| 3127 r = rmonitor->raw_notify(current_thread); | |
| 3128 } else { | |
| 3129 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
| 3130 r = rmonitor->raw_notify(thread); | |
| 3131 } else { | |
| 3132 ShouldNotReachHere(); | |
| 3133 } | |
| 3134 } | |
| 3135 | |
| 3136 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
| 3137 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
| 3138 } | |
| 3139 assert(r == ObjectMonitor::OM_OK, "raw_notify should have worked"); | |
| 3140 if (r != ObjectMonitor::OM_OK) { // robustness | |
| 3141 return JVMTI_ERROR_INTERNAL; | |
| 3142 } | |
| 3143 | |
| 3144 return JVMTI_ERROR_NONE; | |
| 3145 } /* end RawMonitorNotify */ | |
| 3146 | |
| 3147 | |
| 3148 // rmonitor - pre-checked for validity | |
| 3149 jvmtiError | |
| 3150 JvmtiEnv::RawMonitorNotifyAll(JvmtiRawMonitor * rmonitor) { | |
| 3151 int r; | |
| 3152 Thread* thread = Thread::current(); | |
| 3153 | |
| 3154 if (thread->is_Java_thread()) { | |
| 3155 JavaThread* current_thread = (JavaThread*)thread; | |
| 3156 ThreadInVMfromUnknown __tiv; | |
| 3157 r = rmonitor->raw_notifyAll(current_thread); | |
| 3158 } else { | |
| 3159 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
| 3160 r = rmonitor->raw_notifyAll(thread); | |
| 3161 } else { | |
| 3162 ShouldNotReachHere(); | |
| 3163 } | |
| 3164 } | |
| 3165 | |
| 3166 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
| 3167 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
| 3168 } | |
| 3169 assert(r == ObjectMonitor::OM_OK, "raw_notifyAll should have worked"); | |
| 3170 if (r != ObjectMonitor::OM_OK) { // robustness | |
| 3171 return JVMTI_ERROR_INTERNAL; | |
| 3172 } | |
| 3173 | |
| 3174 return JVMTI_ERROR_NONE; | |
| 3175 } /* end RawMonitorNotifyAll */ | |
| 3176 | |
| 3177 | |
| 3178 // | |
| 3179 // JNI Function Interception functions | |
| 3180 // | |
| 3181 | |
| 3182 | |
| 3183 // function_table - pre-checked for NULL | |
| 3184 jvmtiError | |
| 3185 JvmtiEnv::SetJNIFunctionTable(const jniNativeInterface* function_table) { | |
| 3186 // Copy jni function table at safepoint. | |
| 3187 VM_JNIFunctionTableCopier copier(function_table); | |
| 3188 VMThread::execute(&copier); | |
| 3189 | |
| 3190 return JVMTI_ERROR_NONE; | |
| 3191 } /* end SetJNIFunctionTable */ | |
| 3192 | |
| 3193 | |
| 3194 // function_table - pre-checked for NULL | |
| 3195 jvmtiError | |
| 3196 JvmtiEnv::GetJNIFunctionTable(jniNativeInterface** function_table) { | |
| 3197 *function_table=(jniNativeInterface*)jvmtiMalloc(sizeof(jniNativeInterface)); | |
| 3198 if (*function_table == NULL) | |
| 3199 return JVMTI_ERROR_OUT_OF_MEMORY; | |
| 3200 memcpy(*function_table,(JavaThread::current())->get_jni_functions(),sizeof(jniNativeInterface)); | |
| 3201 return JVMTI_ERROR_NONE; | |
| 3202 } /* end GetJNIFunctionTable */ | |
| 3203 | |
| 3204 | |
| 3205 // | |
| 3206 // Event Management functions | |
| 3207 // | |
| 3208 | |
| 3209 jvmtiError | |
| 3210 JvmtiEnv::GenerateEvents(jvmtiEvent event_type) { | |
| 3211 // can only generate two event types | |
| 3212 if (event_type != JVMTI_EVENT_COMPILED_METHOD_LOAD && | |
| 3213 event_type != JVMTI_EVENT_DYNAMIC_CODE_GENERATED) { | |
| 3214 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
| 3215 } | |
| 3216 | |
| 3217 // for compiled_method_load events we must check that the environment | |
| 3218 // has the can_generate_compiled_method_load_events capability. | |
| 3219 if (event_type == JVMTI_EVENT_COMPILED_METHOD_LOAD) { | |
| 3220 if (get_capabilities()->can_generate_compiled_method_load_events == 0) { | |
| 3221 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; | |
| 3222 } | |
| 3223 return JvmtiCodeBlobEvents::generate_compiled_method_load_events(this); | |
| 3224 } else { | |
| 3225 return JvmtiCodeBlobEvents::generate_dynamic_code_events(this); | |
| 3226 } | |
| 3227 | |
| 3228 } /* end GenerateEvents */ | |
| 3229 | |
| 3230 | |
| 3231 // | |
| 3232 // Extension Mechanism functions | |
| 3233 // | |
| 3234 | |
| 3235 // extension_count_ptr - pre-checked for NULL | |
| 3236 // extensions - pre-checked for NULL | |
| 3237 jvmtiError | |
| 3238 JvmtiEnv::GetExtensionFunctions(jint* extension_count_ptr, jvmtiExtensionFunctionInfo** extensions) { | |
| 3239 return JvmtiExtensions::get_functions(this, extension_count_ptr, extensions); | |
| 3240 } /* end GetExtensionFunctions */ | |
| 3241 | |
| 3242 | |
| 3243 // extension_count_ptr - pre-checked for NULL | |
| 3244 // extensions - pre-checked for NULL | |
| 3245 jvmtiError | |
| 3246 JvmtiEnv::GetExtensionEvents(jint* extension_count_ptr, jvmtiExtensionEventInfo** extensions) { | |
| 3247 return JvmtiExtensions::get_events(this, extension_count_ptr, extensions); | |
| 3248 } /* end GetExtensionEvents */ | |
| 3249 | |
| 3250 | |
| 3251 // callback - NULL is a valid value, must be checked | |
| 3252 jvmtiError | |
| 3253 JvmtiEnv::SetExtensionEventCallback(jint extension_event_index, jvmtiExtensionEvent callback) { | |
| 3254 return JvmtiExtensions::set_event_callback(this, extension_event_index, callback); | |
| 3255 } /* end SetExtensionEventCallback */ | |
| 3256 | |
| 3257 // | |
| 3258 // Timers functions | |
| 3259 // | |
| 3260 | |
| 3261 // info_ptr - pre-checked for NULL | |
| 3262 jvmtiError | |
| 3263 JvmtiEnv::GetCurrentThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) { | |
| 3264 os::current_thread_cpu_time_info(info_ptr); | |
| 3265 return JVMTI_ERROR_NONE; | |
| 3266 } /* end GetCurrentThreadCpuTimerInfo */ | |
| 3267 | |
| 3268 | |
| 3269 // nanos_ptr - pre-checked for NULL | |
| 3270 jvmtiError | |
| 3271 JvmtiEnv::GetCurrentThreadCpuTime(jlong* nanos_ptr) { | |
| 3272 *nanos_ptr = os::current_thread_cpu_time(); | |
| 3273 return JVMTI_ERROR_NONE; | |
| 3274 } /* end GetCurrentThreadCpuTime */ | |
| 3275 | |
| 3276 | |
| 3277 // info_ptr - pre-checked for NULL | |
| 3278 jvmtiError | |
| 3279 JvmtiEnv::GetThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) { | |
| 3280 os::thread_cpu_time_info(info_ptr); | |
| 3281 return JVMTI_ERROR_NONE; | |
| 3282 } /* end GetThreadCpuTimerInfo */ | |
| 3283 | |
| 3284 | |
| 3285 // Threads_lock NOT held, java_thread not protected by lock | |
| 3286 // java_thread - pre-checked | |
| 3287 // nanos_ptr - pre-checked for NULL | |
| 3288 jvmtiError | |
| 3289 JvmtiEnv::GetThreadCpuTime(JavaThread* java_thread, jlong* nanos_ptr) { | |
| 3290 *nanos_ptr = os::thread_cpu_time(java_thread); | |
| 3291 return JVMTI_ERROR_NONE; | |
| 3292 } /* end GetThreadCpuTime */ | |
| 3293 | |
| 3294 | |
| 3295 // info_ptr - pre-checked for NULL | |
| 3296 jvmtiError | |
| 3297 JvmtiEnv::GetTimerInfo(jvmtiTimerInfo* info_ptr) { | |
| 3298 os::javaTimeNanos_info(info_ptr); | |
| 3299 return JVMTI_ERROR_NONE; | |
| 3300 } /* end GetTimerInfo */ | |
| 3301 | |
| 3302 | |
| 3303 // nanos_ptr - pre-checked for NULL | |
| 3304 jvmtiError | |
| 3305 JvmtiEnv::GetTime(jlong* nanos_ptr) { | |
| 3306 *nanos_ptr = os::javaTimeNanos(); | |
| 3307 return JVMTI_ERROR_NONE; | |
| 3308 } /* end GetTime */ | |
| 3309 | |
| 3310 | |
| 3311 // processor_count_ptr - pre-checked for NULL | |
| 3312 jvmtiError | |
| 3313 JvmtiEnv::GetAvailableProcessors(jint* processor_count_ptr) { | |
| 3314 *processor_count_ptr = os::active_processor_count(); | |
| 3315 return JVMTI_ERROR_NONE; | |
| 3316 } /* end GetAvailableProcessors */ | |
| 3317 | |
| 3318 // | |
| 3319 // System Properties functions | |
| 3320 // | |
| 3321 | |
| 3322 // count_ptr - pre-checked for NULL | |
| 3323 // property_ptr - pre-checked for NULL | |
| 3324 jvmtiError | |
| 3325 JvmtiEnv::GetSystemProperties(jint* count_ptr, char*** property_ptr) { | |
| 3326 jvmtiError err = JVMTI_ERROR_NONE; | |
| 3327 | |
| 3328 *count_ptr = Arguments::PropertyList_count(Arguments::system_properties()); | |
| 3329 | |
| 3330 err = allocate(*count_ptr * sizeof(char *), (unsigned char **)property_ptr); | |
| 3331 if (err != JVMTI_ERROR_NONE) { | |
| 3332 return err; | |
| 3333 } | |
| 3334 int i = 0 ; | |
| 3335 for (SystemProperty* p = Arguments::system_properties(); p != NULL && i < *count_ptr; p = p->next(), i++) { | |
| 3336 const char *key = p->key(); | |
| 3337 char **tmp_value = *property_ptr+i; | |
| 3338 err = allocate((strlen(key)+1) * sizeof(char), (unsigned char**)tmp_value); | |
| 3339 if (err == JVMTI_ERROR_NONE) { | |
| 3340 strcpy(*tmp_value, key); | |
| 3341 } else { | |
| 3342 // clean up previously allocated memory. | |
| 3343 for (int j=0; j<i; j++) { | |
| 3344 Deallocate((unsigned char*)*property_ptr+j); | |
| 3345 } | |
| 3346 Deallocate((unsigned char*)property_ptr); | |
| 3347 break; | |
| 3348 } | |
| 3349 } | |
| 3350 return err; | |
| 3351 } /* end GetSystemProperties */ | |
| 3352 | |
| 3353 | |
| 3354 // property - pre-checked for NULL | |
| 3355 // value_ptr - pre-checked for NULL | |
| 3356 jvmtiError | |
| 3357 JvmtiEnv::GetSystemProperty(const char* property, char** value_ptr) { | |
| 3358 jvmtiError err = JVMTI_ERROR_NONE; | |
| 3359 const char *value; | |
| 3360 | |
| 3361 value = Arguments::PropertyList_get_value(Arguments::system_properties(), property); | |
| 3362 if (value == NULL) { | |
| 3363 err = JVMTI_ERROR_NOT_AVAILABLE; | |
| 3364 } else { | |
| 3365 err = allocate((strlen(value)+1) * sizeof(char), (unsigned char **)value_ptr); | |
| 3366 if (err == JVMTI_ERROR_NONE) { | |
| 3367 strcpy(*value_ptr, value); | |
| 3368 } | |
| 3369 } | |
| 3370 return err; | |
| 3371 } /* end GetSystemProperty */ | |
| 3372 | |
| 3373 | |
| 3374 // property - pre-checked for NULL | |
| 3375 // value - NULL is a valid value, must be checked | |
| 3376 jvmtiError | |
| 3377 JvmtiEnv::SetSystemProperty(const char* property, const char* value) { | |
| 3378 jvmtiError err =JVMTI_ERROR_NOT_AVAILABLE; | |
| 3379 | |
| 3380 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
| 3381 if (strcmp(property, p->key()) == 0) { | |
| 3382 if (p->set_value((char *)value)) { | |
| 3383 err = JVMTI_ERROR_NONE; | |
| 3384 } | |
| 3385 } | |
| 3386 } | |
| 3387 return err; | |
| 3388 } /* end SetSystemProperty */ | |
| 3389 | |
| 3390 #endif // !JVMTI_KERNEL |