Mercurial > hg > graal-compiler
annotate src/share/vm/prims/jvmtiEnv.cpp @ 6197:d2a62e0f25eb
6995781: Native Memory Tracking (Phase 1)
7151532: DCmd for hotspot native memory tracking
Summary: Implementation of native memory tracking phase 1, which tracks VM native memory usage, and related DCmd
Reviewed-by: acorn, coleenp, fparain
| author | zgu |
|---|---|
| date | Thu, 28 Jun 2012 17:03:16 -0400 |
| parents | 4ceaf61479fc |
| children | 04ade88d9712 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2003, 2011, 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 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "classfile/systemDictionary.hpp" | |
| 27 #include "classfile/vmSymbols.hpp" | |
| 28 #include "interpreter/bytecodeStream.hpp" | |
| 29 #include "interpreter/interpreter.hpp" | |
| 30 #include "jvmtifiles/jvmtiEnv.hpp" | |
| 31 #include "memory/resourceArea.hpp" | |
| 32 #include "memory/universe.inline.hpp" | |
| 33 #include "oops/cpCacheOop.hpp" | |
| 34 #include "oops/instanceKlass.hpp" | |
| 35 #include "prims/jniCheck.hpp" | |
| 36 #include "prims/jvm_misc.hpp" | |
| 37 #include "prims/jvmtiAgentThread.hpp" | |
| 38 #include "prims/jvmtiClassFileReconstituter.hpp" | |
| 39 #include "prims/jvmtiCodeBlobEvents.hpp" | |
| 40 #include "prims/jvmtiExtensions.hpp" | |
| 41 #include "prims/jvmtiGetLoadedClasses.hpp" | |
| 42 #include "prims/jvmtiImpl.hpp" | |
| 43 #include "prims/jvmtiManageCapabilities.hpp" | |
| 44 #include "prims/jvmtiRawMonitor.hpp" | |
| 45 #include "prims/jvmtiRedefineClasses.hpp" | |
| 46 #include "prims/jvmtiTagMap.hpp" | |
| 47 #include "prims/jvmtiThreadState.inline.hpp" | |
| 48 #include "prims/jvmtiUtil.hpp" | |
| 49 #include "runtime/arguments.hpp" | |
| 50 #include "runtime/deoptimization.hpp" | |
| 51 #include "runtime/interfaceSupport.hpp" | |
| 52 #include "runtime/javaCalls.hpp" | |
| 53 #include "runtime/jfieldIDWorkaround.hpp" | |
| 54 #include "runtime/osThread.hpp" | |
| 55 #include "runtime/reflectionUtils.hpp" | |
| 56 #include "runtime/signature.hpp" | |
| 57 #include "runtime/vframe.hpp" | |
| 58 #include "runtime/vmThread.hpp" | |
| 59 #include "services/threadService.hpp" | |
| 60 #include "utilities/exceptions.hpp" | |
| 61 #include "utilities/preserveException.hpp" | |
| 62 #ifdef TARGET_OS_FAMILY_linux | |
| 63 # include "thread_linux.inline.hpp" | |
| 64 #endif | |
| 65 #ifdef TARGET_OS_FAMILY_solaris | |
| 66 # include "thread_solaris.inline.hpp" | |
| 67 #endif | |
| 68 #ifdef TARGET_OS_FAMILY_windows | |
| 69 # include "thread_windows.inline.hpp" | |
| 70 #endif | |
| 3960 | 71 #ifdef TARGET_OS_FAMILY_bsd |
| 72 # include "thread_bsd.inline.hpp" | |
| 73 #endif | |
| 1972 | 74 |
| 0 | 75 |
| 76 | |
| 77 #define FIXLATER 0 // REMOVE this when completed. | |
| 78 | |
| 79 // FIXLATER: hook into JvmtiTrace | |
| 80 #define TraceJVMTICalls false | |
| 81 | |
| 1121 | 82 JvmtiEnv::JvmtiEnv(jint version) : JvmtiEnvBase(version) { |
| 0 | 83 } |
| 84 | |
| 85 JvmtiEnv::~JvmtiEnv() { | |
| 86 } | |
| 87 | |
| 88 JvmtiEnv* | |
| 1121 | 89 JvmtiEnv::create_a_jvmti(jint version) { |
| 90 return new JvmtiEnv(version); | |
| 0 | 91 } |
| 92 | |
| 93 // VM operation class to copy jni function table at safepoint. | |
| 94 // More than one java threads or jvmti agents may be reading/ | |
| 95 // modifying jni function tables. To reduce the risk of bad | |
| 96 // interaction b/w these threads it is copied at safepoint. | |
| 97 class VM_JNIFunctionTableCopier : public VM_Operation { | |
| 98 private: | |
| 99 const struct JNINativeInterface_ *_function_table; | |
| 100 public: | |
| 101 VM_JNIFunctionTableCopier(const struct JNINativeInterface_ *func_tbl) { | |
| 102 _function_table = func_tbl; | |
| 103 }; | |
| 104 | |
| 105 VMOp_Type type() const { return VMOp_JNIFunctionTableCopier; } | |
| 106 void doit() { | |
| 107 copy_jni_function_table(_function_table); | |
| 108 }; | |
| 109 }; | |
| 110 | |
| 111 // | |
| 112 // Do not change the "prefix" marker below, everything above it is copied | |
| 113 // unchanged into the filled stub, everything below is controlled by the | |
| 114 // stub filler (only method bodies are carried forward, and then only for | |
| 115 // functionality still in the spec). | |
| 116 // | |
| 117 // end file prefix | |
| 118 | |
| 119 // | |
| 120 // Memory Management functions | |
| 121 // | |
| 122 | |
| 123 // mem_ptr - pre-checked for NULL | |
| 124 jvmtiError | |
| 125 JvmtiEnv::Allocate(jlong size, unsigned char** mem_ptr) { | |
| 126 return allocate(size, mem_ptr); | |
| 127 } /* end Allocate */ | |
| 128 | |
| 129 | |
| 130 // mem - NULL is a valid value, must be checked | |
| 131 jvmtiError | |
| 132 JvmtiEnv::Deallocate(unsigned char* mem) { | |
| 133 return deallocate(mem); | |
| 134 } /* end Deallocate */ | |
| 135 | |
| 136 // Threads_lock NOT held, java_thread not protected by lock | |
| 137 // java_thread - pre-checked | |
| 138 // data - NULL is a valid value, must be checked | |
| 139 jvmtiError | |
| 140 JvmtiEnv::SetThreadLocalStorage(JavaThread* java_thread, const void* data) { | |
| 141 JvmtiThreadState* state = java_thread->jvmti_thread_state(); | |
| 142 if (state == NULL) { | |
| 143 if (data == NULL) { | |
| 144 // leaving state unset same as data set to NULL | |
| 145 return JVMTI_ERROR_NONE; | |
| 146 } | |
| 147 // otherwise, create the state | |
| 148 state = JvmtiThreadState::state_for(java_thread); | |
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149 if (state == NULL) { |
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150 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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151 } |
| 0 | 152 } |
| 153 state->env_thread_state(this)->set_agent_thread_local_storage_data((void*)data); | |
| 154 return JVMTI_ERROR_NONE; | |
| 155 } /* end SetThreadLocalStorage */ | |
| 156 | |
| 157 | |
| 158 // Threads_lock NOT held | |
| 159 // thread - NOT pre-checked | |
| 160 // data_ptr - pre-checked for NULL | |
| 161 jvmtiError | |
| 162 JvmtiEnv::GetThreadLocalStorage(jthread thread, void** data_ptr) { | |
| 163 JavaThread* current_thread = JavaThread::current(); | |
| 164 if (thread == NULL) { | |
| 165 JvmtiThreadState* state = current_thread->jvmti_thread_state(); | |
| 166 *data_ptr = (state == NULL) ? NULL : | |
| 167 state->env_thread_state(this)->get_agent_thread_local_storage_data(); | |
| 168 } else { | |
| 169 | |
| 170 // jvmti_GetThreadLocalStorage is "in native" and doesn't transition | |
| 171 // the thread to _thread_in_vm. However, when the TLS for a thread | |
| 172 // other than the current thread is required we need to transition | |
| 173 // from native so as to resolve the jthread. | |
| 174 | |
| 175 ThreadInVMfromNative __tiv(current_thread); | |
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176 VM_ENTRY_BASE(jvmtiError, JvmtiEnv::GetThreadLocalStorage , current_thread) |
| 0 | 177 debug_only(VMNativeEntryWrapper __vew;) |
| 178 | |
| 179 oop thread_oop = JNIHandles::resolve_external_guard(thread); | |
| 180 if (thread_oop == NULL) { | |
| 181 return JVMTI_ERROR_INVALID_THREAD; | |
| 182 } | |
| 1142 | 183 if (!thread_oop->is_a(SystemDictionary::Thread_klass())) { |
| 0 | 184 return JVMTI_ERROR_INVALID_THREAD; |
| 185 } | |
| 186 JavaThread* java_thread = java_lang_Thread::thread(thread_oop); | |
| 187 if (java_thread == NULL) { | |
| 188 return JVMTI_ERROR_THREAD_NOT_ALIVE; | |
| 189 } | |
| 190 JvmtiThreadState* state = java_thread->jvmti_thread_state(); | |
| 191 *data_ptr = (state == NULL) ? NULL : | |
| 192 state->env_thread_state(this)->get_agent_thread_local_storage_data(); | |
| 193 } | |
| 194 return JVMTI_ERROR_NONE; | |
| 195 } /* end GetThreadLocalStorage */ | |
| 196 | |
| 197 // | |
| 198 // Class functions | |
| 199 // | |
| 200 | |
| 201 // class_count_ptr - pre-checked for NULL | |
| 202 // classes_ptr - pre-checked for NULL | |
| 203 jvmtiError | |
| 204 JvmtiEnv::GetLoadedClasses(jint* class_count_ptr, jclass** classes_ptr) { | |
| 205 return JvmtiGetLoadedClasses::getLoadedClasses(this, class_count_ptr, classes_ptr); | |
| 206 } /* end GetLoadedClasses */ | |
| 207 | |
| 208 | |
| 209 // initiating_loader - NULL is a valid value, must be checked | |
| 210 // class_count_ptr - pre-checked for NULL | |
| 211 // classes_ptr - pre-checked for NULL | |
| 212 jvmtiError | |
| 213 JvmtiEnv::GetClassLoaderClasses(jobject initiating_loader, jint* class_count_ptr, jclass** classes_ptr) { | |
| 214 return JvmtiGetLoadedClasses::getClassLoaderClasses(this, initiating_loader, | |
| 215 class_count_ptr, classes_ptr); | |
| 216 } /* end GetClassLoaderClasses */ | |
| 217 | |
| 218 // k_mirror - may be primitive, this must be checked | |
| 219 // is_modifiable_class_ptr - pre-checked for NULL | |
| 220 jvmtiError | |
| 221 JvmtiEnv::IsModifiableClass(oop k_mirror, jboolean* is_modifiable_class_ptr) { | |
| 222 *is_modifiable_class_ptr = VM_RedefineClasses::is_modifiable_class(k_mirror)? | |
| 223 JNI_TRUE : JNI_FALSE; | |
| 224 return JVMTI_ERROR_NONE; | |
| 225 } /* end IsModifiableClass */ | |
| 226 | |
| 227 // class_count - pre-checked to be greater than or equal to 0 | |
| 228 // classes - pre-checked for NULL | |
| 229 jvmtiError | |
| 230 JvmtiEnv::RetransformClasses(jint class_count, const jclass* classes) { | |
| 231 //TODO: add locking | |
| 232 | |
| 233 int index; | |
| 234 JavaThread* current_thread = JavaThread::current(); | |
| 235 ResourceMark rm(current_thread); | |
| 236 | |
| 237 jvmtiClassDefinition* class_definitions = | |
| 238 NEW_RESOURCE_ARRAY(jvmtiClassDefinition, class_count); | |
| 239 NULL_CHECK(class_definitions, JVMTI_ERROR_OUT_OF_MEMORY); | |
| 240 | |
| 241 for (index = 0; index < class_count; index++) { | |
| 242 HandleMark hm(current_thread); | |
| 243 | |
| 244 jclass jcls = classes[index]; | |
| 245 oop k_mirror = JNIHandles::resolve_external_guard(jcls); | |
| 246 if (k_mirror == NULL) { | |
| 247 return JVMTI_ERROR_INVALID_CLASS; | |
| 248 } | |
| 1142 | 249 if (!k_mirror->is_a(SystemDictionary::Class_klass())) { |
| 0 | 250 return JVMTI_ERROR_INVALID_CLASS; |
| 251 } | |
| 252 | |
| 253 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 254 return JVMTI_ERROR_UNMODIFIABLE_CLASS; | |
| 255 } | |
| 256 | |
| 257 klassOop k_oop = java_lang_Class::as_klassOop(k_mirror); | |
| 258 KlassHandle klass(current_thread, k_oop); | |
| 259 | |
| 260 jint status = klass->jvmti_class_status(); | |
| 261 if (status & (JVMTI_CLASS_STATUS_ERROR)) { | |
| 262 return JVMTI_ERROR_INVALID_CLASS; | |
| 263 } | |
| 264 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { | |
| 265 return JVMTI_ERROR_UNMODIFIABLE_CLASS; | |
| 266 } | |
| 267 | |
| 268 instanceKlassHandle ikh(current_thread, k_oop); | |
| 269 if (ikh->get_cached_class_file_bytes() == NULL) { | |
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270 // Not cached, we need to reconstitute the class file from the |
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271 // VM representation. We don't attach the reconstituted class |
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272 // bytes to the instanceKlass here because they have not been |
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273 // validated and we're not at a safepoint. |
| 0 | 274 constantPoolHandle constants(current_thread, ikh->constants()); |
| 275 ObjectLocker ol(constants, current_thread); // lock constant pool while we query it | |
| 276 | |
| 277 JvmtiClassFileReconstituter reconstituter(ikh); | |
| 278 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
| 279 return reconstituter.get_error(); | |
| 280 } | |
| 281 | |
| 282 class_definitions[index].class_byte_count = (jint)reconstituter.class_file_size(); | |
| 283 class_definitions[index].class_bytes = (unsigned char*) | |
| 284 reconstituter.class_file_bytes(); | |
| 285 } else { | |
| 286 // it is cached, get it from the cache | |
| 287 class_definitions[index].class_byte_count = ikh->get_cached_class_file_len(); | |
| 288 class_definitions[index].class_bytes = ikh->get_cached_class_file_bytes(); | |
| 289 } | |
| 290 class_definitions[index].klass = jcls; | |
| 291 } | |
| 292 VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_retransform); | |
| 293 VMThread::execute(&op); | |
| 294 return (op.check_error()); | |
| 295 } /* end RetransformClasses */ | |
| 296 | |
| 297 | |
| 298 // class_count - pre-checked to be greater than or equal to 0 | |
| 299 // class_definitions - pre-checked for NULL | |
| 300 jvmtiError | |
| 301 JvmtiEnv::RedefineClasses(jint class_count, const jvmtiClassDefinition* class_definitions) { | |
| 302 //TODO: add locking | |
| 303 VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_redefine); | |
| 304 VMThread::execute(&op); | |
| 305 return (op.check_error()); | |
| 306 } /* end RedefineClasses */ | |
| 307 | |
| 308 | |
| 309 // | |
| 310 // Object functions | |
| 311 // | |
| 312 | |
| 313 // size_ptr - pre-checked for NULL | |
| 314 jvmtiError | |
| 315 JvmtiEnv::GetObjectSize(jobject object, jlong* size_ptr) { | |
| 316 oop mirror = JNIHandles::resolve_external_guard(object); | |
| 317 NULL_CHECK(mirror, JVMTI_ERROR_INVALID_OBJECT); | |
| 318 | |
| 1142 | 319 if (mirror->klass() == SystemDictionary::Class_klass()) { |
| 0 | 320 if (!java_lang_Class::is_primitive(mirror)) { |
| 321 mirror = java_lang_Class::as_klassOop(mirror); | |
| 322 assert(mirror != NULL, "class for non-primitive mirror must exist"); | |
| 323 } | |
| 324 } | |
| 325 | |
| 326 *size_ptr = mirror->size() * wordSize; | |
| 327 return JVMTI_ERROR_NONE; | |
| 328 } /* end GetObjectSize */ | |
| 329 | |
| 330 // | |
| 331 // Method functions | |
| 332 // | |
| 333 | |
| 334 // prefix - NULL is a valid value, must be checked | |
| 335 jvmtiError | |
| 336 JvmtiEnv::SetNativeMethodPrefix(const char* prefix) { | |
| 337 return prefix == NULL? | |
| 338 SetNativeMethodPrefixes(0, NULL) : | |
| 339 SetNativeMethodPrefixes(1, (char**)&prefix); | |
| 340 } /* end SetNativeMethodPrefix */ | |
| 341 | |
| 342 | |
| 343 // prefix_count - pre-checked to be greater than or equal to 0 | |
| 344 // prefixes - pre-checked for NULL | |
| 345 jvmtiError | |
| 346 JvmtiEnv::SetNativeMethodPrefixes(jint prefix_count, char** prefixes) { | |
| 347 // Have to grab JVMTI thread state lock to be sure that some thread | |
| 348 // isn't accessing the prefixes at the same time we are setting them. | |
| 349 // No locks during VM bring-up. | |
| 350 if (Threads::number_of_threads() == 0) { | |
| 351 return set_native_method_prefixes(prefix_count, prefixes); | |
| 352 } else { | |
| 353 MutexLocker mu(JvmtiThreadState_lock); | |
| 354 return set_native_method_prefixes(prefix_count, prefixes); | |
| 355 } | |
| 356 } /* end SetNativeMethodPrefixes */ | |
| 357 | |
| 358 // | |
| 359 // Event Management functions | |
| 360 // | |
| 361 | |
| 362 // callbacks - NULL is a valid value, must be checked | |
| 363 // size_of_callbacks - pre-checked to be greater than or equal to 0 | |
| 364 jvmtiError | |
| 365 JvmtiEnv::SetEventCallbacks(const jvmtiEventCallbacks* callbacks, jint size_of_callbacks) { | |
| 366 JvmtiEventController::set_event_callbacks(this, callbacks, size_of_callbacks); | |
| 367 return JVMTI_ERROR_NONE; | |
| 368 } /* end SetEventCallbacks */ | |
| 369 | |
| 370 | |
| 371 // event_thread - NULL is a valid value, must be checked | |
| 372 jvmtiError | |
| 373 JvmtiEnv::SetEventNotificationMode(jvmtiEventMode mode, jvmtiEvent event_type, jthread event_thread, ...) { | |
| 374 JavaThread* java_thread = NULL; | |
| 375 if (event_thread != NULL) { | |
| 376 oop thread_oop = JNIHandles::resolve_external_guard(event_thread); | |
| 377 if (thread_oop == NULL) { | |
| 378 return JVMTI_ERROR_INVALID_THREAD; | |
| 379 } | |
| 1142 | 380 if (!thread_oop->is_a(SystemDictionary::Thread_klass())) { |
| 0 | 381 return JVMTI_ERROR_INVALID_THREAD; |
| 382 } | |
| 383 java_thread = java_lang_Thread::thread(thread_oop); | |
| 384 if (java_thread == NULL) { | |
| 385 return JVMTI_ERROR_THREAD_NOT_ALIVE; | |
| 386 } | |
| 387 } | |
| 388 | |
| 389 // event_type must be valid | |
| 390 if (!JvmtiEventController::is_valid_event_type(event_type)) { | |
| 391 return JVMTI_ERROR_INVALID_EVENT_TYPE; | |
| 392 } | |
| 393 | |
| 394 // global events cannot be controlled at thread level. | |
| 395 if (java_thread != NULL && JvmtiEventController::is_global_event(event_type)) { | |
| 396 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
| 397 } | |
| 398 | |
| 399 bool enabled = (mode == JVMTI_ENABLE); | |
| 400 | |
| 401 // assure that needed capabilities are present | |
| 402 if (enabled && !JvmtiUtil::has_event_capability(event_type, get_capabilities())) { | |
| 403 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; | |
| 404 } | |
| 405 | |
| 406 if (event_type == JVMTI_EVENT_CLASS_FILE_LOAD_HOOK && enabled) { | |
| 407 record_class_file_load_hook_enabled(); | |
| 408 } | |
| 409 JvmtiEventController::set_user_enabled(this, java_thread, event_type, enabled); | |
| 410 | |
| 411 return JVMTI_ERROR_NONE; | |
| 412 } /* end SetEventNotificationMode */ | |
| 413 | |
| 414 // | |
| 415 // Capability functions | |
| 416 // | |
| 417 | |
| 418 // capabilities_ptr - pre-checked for NULL | |
| 419 jvmtiError | |
| 420 JvmtiEnv::GetPotentialCapabilities(jvmtiCapabilities* capabilities_ptr) { | |
| 421 JvmtiManageCapabilities::get_potential_capabilities(get_capabilities(), | |
| 422 get_prohibited_capabilities(), | |
| 423 capabilities_ptr); | |
| 424 return JVMTI_ERROR_NONE; | |
| 425 } /* end GetPotentialCapabilities */ | |
| 426 | |
| 427 | |
| 428 // capabilities_ptr - pre-checked for NULL | |
| 429 jvmtiError | |
| 430 JvmtiEnv::AddCapabilities(const jvmtiCapabilities* capabilities_ptr) { | |
| 431 return JvmtiManageCapabilities::add_capabilities(get_capabilities(), | |
| 432 get_prohibited_capabilities(), | |
| 433 capabilities_ptr, | |
| 434 get_capabilities()); | |
| 435 } /* end AddCapabilities */ | |
| 436 | |
| 437 | |
| 438 // capabilities_ptr - pre-checked for NULL | |
| 439 jvmtiError | |
| 440 JvmtiEnv::RelinquishCapabilities(const jvmtiCapabilities* capabilities_ptr) { | |
| 441 JvmtiManageCapabilities::relinquish_capabilities(get_capabilities(), capabilities_ptr, get_capabilities()); | |
| 442 return JVMTI_ERROR_NONE; | |
| 443 } /* end RelinquishCapabilities */ | |
| 444 | |
| 445 | |
| 446 // capabilities_ptr - pre-checked for NULL | |
| 447 jvmtiError | |
| 448 JvmtiEnv::GetCapabilities(jvmtiCapabilities* capabilities_ptr) { | |
| 449 JvmtiManageCapabilities::copy_capabilities(get_capabilities(), capabilities_ptr); | |
| 450 return JVMTI_ERROR_NONE; | |
| 451 } /* end GetCapabilities */ | |
| 452 | |
| 453 // | |
| 454 // Class Loader Search functions | |
| 455 // | |
| 456 | |
| 457 // segment - pre-checked for NULL | |
| 458 jvmtiError | |
| 459 JvmtiEnv::AddToBootstrapClassLoaderSearch(const char* segment) { | |
| 460 jvmtiPhase phase = get_phase(); | |
| 461 if (phase == JVMTI_PHASE_ONLOAD) { | |
| 462 Arguments::append_sysclasspath(segment); | |
| 463 return JVMTI_ERROR_NONE; | |
| 1121 | 464 } else if (use_version_1_0_semantics()) { |
| 465 // This JvmtiEnv requested version 1.0 semantics and this function | |
| 466 // is only allowed in the ONLOAD phase in version 1.0 so we need to | |
| 467 // return an error here. | |
| 468 return JVMTI_ERROR_WRONG_PHASE; | |
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469 } else if (phase == JVMTI_PHASE_LIVE) { |
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470 // The phase is checked by the wrapper that called this function, |
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471 // but this thread could be racing with the thread that is |
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472 // terminating the VM so we check one more time. |
| 0 | 473 |
| 474 // create the zip entry | |
| 475 ClassPathZipEntry* zip_entry = ClassLoader::create_class_path_zip_entry(segment); | |
| 476 if (zip_entry == NULL) { | |
| 477 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
| 478 } | |
| 479 | |
| 480 // lock the loader | |
| 481 Thread* thread = Thread::current(); | |
| 482 HandleMark hm; | |
| 483 Handle loader_lock = Handle(thread, SystemDictionary::system_loader_lock()); | |
| 484 | |
| 485 ObjectLocker ol(loader_lock, thread); | |
| 486 | |
| 487 // add the jar file to the bootclasspath | |
| 488 if (TraceClassLoading) { | |
| 489 tty->print_cr("[Opened %s]", zip_entry->name()); | |
| 490 } | |
| 491 ClassLoader::add_to_list(zip_entry); | |
| 492 return JVMTI_ERROR_NONE; | |
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493 } else { |
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494 return JVMTI_ERROR_WRONG_PHASE; |
| 0 | 495 } |
| 496 | |
| 497 } /* end AddToBootstrapClassLoaderSearch */ | |
| 498 | |
| 499 | |
| 500 // segment - pre-checked for NULL | |
| 501 jvmtiError | |
| 502 JvmtiEnv::AddToSystemClassLoaderSearch(const char* segment) { | |
| 503 jvmtiPhase phase = get_phase(); | |
| 504 | |
| 505 if (phase == JVMTI_PHASE_ONLOAD) { | |
| 506 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
| 507 if (strcmp("java.class.path", p->key()) == 0) { | |
| 508 p->append_value(segment); | |
| 509 break; | |
| 510 } | |
| 511 } | |
| 512 return JVMTI_ERROR_NONE; | |
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513 } else if (phase == JVMTI_PHASE_LIVE) { |
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514 // The phase is checked by the wrapper that called this function, |
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515 // but this thread could be racing with the thread that is |
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516 // terminating the VM so we check one more time. |
| 0 | 517 HandleMark hm; |
| 518 | |
| 519 // create the zip entry (which will open the zip file and hence | |
| 520 // check that the segment is indeed a zip file). | |
| 521 ClassPathZipEntry* zip_entry = ClassLoader::create_class_path_zip_entry(segment); | |
| 522 if (zip_entry == NULL) { | |
| 523 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
| 524 } | |
| 525 delete zip_entry; // no longer needed | |
| 526 | |
| 527 // lock the loader | |
| 528 Thread* THREAD = Thread::current(); | |
| 529 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); | |
| 530 | |
| 531 ObjectLocker ol(loader, THREAD); | |
| 532 | |
| 533 // need the path as java.lang.String | |
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534 Handle path = java_lang_String::create_from_platform_dependent_str(segment, THREAD); |
| 0 | 535 if (HAS_PENDING_EXCEPTION) { |
| 536 CLEAR_PENDING_EXCEPTION; | |
| 537 return JVMTI_ERROR_INTERNAL; | |
| 538 } | |
| 539 | |
| 540 instanceKlassHandle loader_ik(THREAD, loader->klass()); | |
| 541 | |
| 542 // Invoke the appendToClassPathForInstrumentation method - if the method | |
| 543 // is not found it means the loader doesn't support adding to the class path | |
| 544 // in the live phase. | |
| 545 { | |
| 546 JavaValue res(T_VOID); | |
| 547 JavaCalls::call_special(&res, | |
| 548 loader, | |
| 549 loader_ik, | |
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550 vmSymbols::appendToClassPathForInstrumentation_name(), |
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551 vmSymbols::appendToClassPathForInstrumentation_signature(), |
| 0 | 552 path, |
| 553 THREAD); | |
| 554 if (HAS_PENDING_EXCEPTION) { | |
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555 Symbol* ex_name = PENDING_EXCEPTION->klass()->klass_part()->name(); |
| 0 | 556 CLEAR_PENDING_EXCEPTION; |
| 557 | |
| 558 if (ex_name == vmSymbols::java_lang_NoSuchMethodError()) { | |
| 559 return JVMTI_ERROR_CLASS_LOADER_UNSUPPORTED; | |
| 560 } else { | |
| 561 return JVMTI_ERROR_INTERNAL; | |
| 562 } | |
| 563 } | |
| 564 } | |
| 565 | |
| 566 return JVMTI_ERROR_NONE; | |
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567 } else { |
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568 return JVMTI_ERROR_WRONG_PHASE; |
| 0 | 569 } |
| 570 } /* end AddToSystemClassLoaderSearch */ | |
| 571 | |
| 572 // | |
| 573 // General functions | |
| 574 // | |
| 575 | |
| 576 // phase_ptr - pre-checked for NULL | |
| 577 jvmtiError | |
| 578 JvmtiEnv::GetPhase(jvmtiPhase* phase_ptr) { | |
| 579 *phase_ptr = get_phase(); | |
| 580 return JVMTI_ERROR_NONE; | |
| 581 } /* end GetPhase */ | |
| 582 | |
| 583 | |
| 584 jvmtiError | |
| 585 JvmtiEnv::DisposeEnvironment() { | |
| 586 dispose(); | |
| 587 return JVMTI_ERROR_NONE; | |
| 588 } /* end DisposeEnvironment */ | |
| 589 | |
| 590 | |
| 591 // data - NULL is a valid value, must be checked | |
| 592 jvmtiError | |
| 593 JvmtiEnv::SetEnvironmentLocalStorage(const void* data) { | |
| 594 set_env_local_storage(data); | |
| 595 return JVMTI_ERROR_NONE; | |
| 596 } /* end SetEnvironmentLocalStorage */ | |
| 597 | |
| 598 | |
| 599 // data_ptr - pre-checked for NULL | |
| 600 jvmtiError | |
| 601 JvmtiEnv::GetEnvironmentLocalStorage(void** data_ptr) { | |
| 602 *data_ptr = (void*)get_env_local_storage(); | |
| 603 return JVMTI_ERROR_NONE; | |
| 604 } /* end GetEnvironmentLocalStorage */ | |
| 605 | |
| 606 // version_ptr - pre-checked for NULL | |
| 607 jvmtiError | |
| 608 JvmtiEnv::GetVersionNumber(jint* version_ptr) { | |
| 609 *version_ptr = JVMTI_VERSION; | |
| 610 return JVMTI_ERROR_NONE; | |
| 611 } /* end GetVersionNumber */ | |
| 612 | |
| 613 | |
| 614 // name_ptr - pre-checked for NULL | |
| 615 jvmtiError | |
| 616 JvmtiEnv::GetErrorName(jvmtiError error, char** name_ptr) { | |
| 617 if (error < JVMTI_ERROR_NONE || error > JVMTI_ERROR_MAX) { | |
| 618 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
| 619 } | |
| 620 const char *name = JvmtiUtil::error_name(error); | |
| 621 if (name == NULL) { | |
| 622 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
| 623 } | |
| 624 size_t len = strlen(name) + 1; | |
| 625 jvmtiError err = allocate(len, (unsigned char**)name_ptr); | |
| 626 if (err == JVMTI_ERROR_NONE) { | |
| 627 memcpy(*name_ptr, name, len); | |
| 628 } | |
| 629 return err; | |
| 630 } /* end GetErrorName */ | |
| 631 | |
| 632 | |
| 633 jvmtiError | |
| 634 JvmtiEnv::SetVerboseFlag(jvmtiVerboseFlag flag, jboolean value) { | |
| 635 switch (flag) { | |
| 636 case JVMTI_VERBOSE_OTHER: | |
| 637 // ignore | |
| 638 break; | |
| 639 case JVMTI_VERBOSE_CLASS: | |
| 640 TraceClassLoading = value != 0; | |
| 641 TraceClassUnloading = value != 0; | |
| 642 break; | |
| 643 case JVMTI_VERBOSE_GC: | |
| 644 PrintGC = value != 0; | |
| 645 break; | |
| 646 case JVMTI_VERBOSE_JNI: | |
| 647 PrintJNIResolving = value != 0; | |
| 648 break; | |
| 649 default: | |
| 650 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
| 651 }; | |
| 652 return JVMTI_ERROR_NONE; | |
| 653 } /* end SetVerboseFlag */ | |
| 654 | |
| 655 | |
| 656 // format_ptr - pre-checked for NULL | |
| 657 jvmtiError | |
| 658 JvmtiEnv::GetJLocationFormat(jvmtiJlocationFormat* format_ptr) { | |
| 659 *format_ptr = JVMTI_JLOCATION_JVMBCI; | |
| 660 return JVMTI_ERROR_NONE; | |
| 661 } /* end GetJLocationFormat */ | |
| 662 | |
| 663 #ifndef JVMTI_KERNEL | |
| 664 | |
| 665 // | |
| 666 // Thread functions | |
| 667 // | |
| 668 | |
| 669 // Threads_lock NOT held | |
| 670 // thread - NOT pre-checked | |
| 671 // thread_state_ptr - pre-checked for NULL | |
| 672 jvmtiError | |
| 673 JvmtiEnv::GetThreadState(jthread thread, jint* thread_state_ptr) { | |
| 674 jint state; | |
| 675 oop thread_oop; | |
| 676 JavaThread* thr; | |
| 677 | |
| 678 if (thread == NULL) { | |
| 679 thread_oop = JavaThread::current()->threadObj(); | |
| 680 } else { | |
| 681 thread_oop = JNIHandles::resolve_external_guard(thread); | |
| 682 } | |
| 683 | |
| 1142 | 684 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) { |
| 0 | 685 return JVMTI_ERROR_INVALID_THREAD; |
| 686 } | |
| 687 | |
| 688 // get most state bits | |
| 689 state = (jint)java_lang_Thread::get_thread_status(thread_oop); | |
| 690 | |
| 691 // add more state bits | |
| 692 thr = java_lang_Thread::thread(thread_oop); | |
| 693 if (thr != NULL) { | |
| 694 JavaThreadState jts = thr->thread_state(); | |
| 695 | |
| 696 if (thr->is_being_ext_suspended()) { | |
| 697 state |= JVMTI_THREAD_STATE_SUSPENDED; | |
| 698 } | |
| 699 if (jts == _thread_in_native) { | |
| 700 state |= JVMTI_THREAD_STATE_IN_NATIVE; | |
| 701 } | |
| 702 OSThread* osThread = thr->osthread(); | |
| 703 if (osThread != NULL && osThread->interrupted()) { | |
| 704 state |= JVMTI_THREAD_STATE_INTERRUPTED; | |
| 705 } | |
| 706 } | |
| 707 | |
| 708 *thread_state_ptr = state; | |
| 709 return JVMTI_ERROR_NONE; | |
| 710 } /* end GetThreadState */ | |
| 711 | |
| 712 | |
| 713 // thread_ptr - pre-checked for NULL | |
| 714 jvmtiError | |
| 715 JvmtiEnv::GetCurrentThread(jthread* thread_ptr) { | |
| 716 JavaThread* current_thread = JavaThread::current(); | |
| 717 *thread_ptr = (jthread)JNIHandles::make_local(current_thread, current_thread->threadObj()); | |
| 718 return JVMTI_ERROR_NONE; | |
| 719 } /* end GetCurrentThread */ | |
| 720 | |
| 721 | |
| 722 // threads_count_ptr - pre-checked for NULL | |
| 723 // threads_ptr - pre-checked for NULL | |
| 724 jvmtiError | |
| 725 JvmtiEnv::GetAllThreads(jint* threads_count_ptr, jthread** threads_ptr) { | |
| 726 int nthreads = 0; | |
| 727 Handle *thread_objs = NULL; | |
| 728 ResourceMark rm; | |
| 729 HandleMark hm; | |
| 730 | |
| 731 // enumerate threads (including agent threads) | |
| 732 ThreadsListEnumerator tle(Thread::current(), true); | |
| 733 nthreads = tle.num_threads(); | |
| 734 *threads_count_ptr = nthreads; | |
| 735 | |
| 736 if (nthreads == 0) { | |
| 737 *threads_ptr = NULL; | |
| 738 return JVMTI_ERROR_NONE; | |
| 739 } | |
| 740 | |
| 741 thread_objs = NEW_RESOURCE_ARRAY(Handle, nthreads); | |
| 742 NULL_CHECK(thread_objs, JVMTI_ERROR_OUT_OF_MEMORY); | |
| 743 | |
| 744 for (int i=0; i < nthreads; i++) { | |
| 745 thread_objs[i] = Handle(tle.get_threadObj(i)); | |
| 746 } | |
| 747 | |
| 748 // have to make global handles outside of Threads_lock | |
| 749 jthread *jthreads = new_jthreadArray(nthreads, thread_objs); | |
| 750 NULL_CHECK(jthreads, JVMTI_ERROR_OUT_OF_MEMORY); | |
| 751 | |
| 752 *threads_ptr = jthreads; | |
| 753 return JVMTI_ERROR_NONE; | |
| 754 } /* end GetAllThreads */ | |
| 755 | |
| 756 | |
| 757 // Threads_lock NOT held, java_thread not protected by lock | |
| 758 // java_thread - pre-checked | |
| 759 jvmtiError | |
| 760 JvmtiEnv::SuspendThread(JavaThread* java_thread) { | |
| 761 // don't allow hidden thread suspend request. | |
| 762 if (java_thread->is_hidden_from_external_view()) { | |
| 763 return (JVMTI_ERROR_NONE); | |
| 764 } | |
| 765 | |
| 766 { | |
| 767 MutexLockerEx ml(java_thread->SR_lock(), Mutex::_no_safepoint_check_flag); | |
| 768 if (java_thread->is_external_suspend()) { | |
| 769 // don't allow nested external suspend requests. | |
| 770 return (JVMTI_ERROR_THREAD_SUSPENDED); | |
| 771 } | |
| 772 if (java_thread->is_exiting()) { // thread is in the process of exiting | |
| 773 return (JVMTI_ERROR_THREAD_NOT_ALIVE); | |
| 774 } | |
| 775 java_thread->set_external_suspend(); | |
| 776 } | |
| 777 | |
| 778 if (!JvmtiSuspendControl::suspend(java_thread)) { | |
| 779 // the thread was in the process of exiting | |
| 780 return (JVMTI_ERROR_THREAD_NOT_ALIVE); | |
| 781 } | |
| 782 return JVMTI_ERROR_NONE; | |
| 783 } /* end SuspendThread */ | |
| 784 | |
| 785 | |
| 786 // request_count - pre-checked to be greater than or equal to 0 | |
| 787 // request_list - pre-checked for NULL | |
| 788 // results - pre-checked for NULL | |
| 789 jvmtiError | |
| 790 JvmtiEnv::SuspendThreadList(jint request_count, const jthread* request_list, jvmtiError* results) { | |
| 791 int needSafepoint = 0; // > 0 if we need a safepoint | |
| 792 for (int i = 0; i < request_count; i++) { | |
| 793 JavaThread *java_thread = get_JavaThread(request_list[i]); | |
| 794 if (java_thread == NULL) { | |
| 795 results[i] = JVMTI_ERROR_INVALID_THREAD; | |
| 796 continue; | |
| 797 } | |
| 798 // the thread has not yet run or has exited (not on threads list) | |
| 799 if (java_thread->threadObj() == NULL) { | |
| 800 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
| 801 continue; | |
| 802 } | |
| 803 if (java_lang_Thread::thread(java_thread->threadObj()) == NULL) { | |
| 804 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
| 805 continue; | |
| 806 } | |
| 807 // don't allow hidden thread suspend request. | |
| 808 if (java_thread->is_hidden_from_external_view()) { | |
| 809 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend | |
| 810 continue; | |
| 811 } | |
| 812 | |
| 813 { | |
| 814 MutexLockerEx ml(java_thread->SR_lock(), Mutex::_no_safepoint_check_flag); | |
| 815 if (java_thread->is_external_suspend()) { | |
| 816 // don't allow nested external suspend requests. | |
| 817 results[i] = JVMTI_ERROR_THREAD_SUSPENDED; | |
| 818 continue; | |
| 819 } | |
| 820 if (java_thread->is_exiting()) { // thread is in the process of exiting | |
| 821 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
| 822 continue; | |
| 823 } | |
| 824 java_thread->set_external_suspend(); | |
| 825 } | |
| 826 if (java_thread->thread_state() == _thread_in_native) { | |
| 827 // We need to try and suspend native threads here. Threads in | |
| 828 // other states will self-suspend on their next transition. | |
| 829 if (!JvmtiSuspendControl::suspend(java_thread)) { | |
| 830 // The thread was in the process of exiting. Force another | |
| 831 // safepoint to make sure that this thread transitions. | |
| 832 needSafepoint++; | |
| 833 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
| 834 continue; | |
| 835 } | |
| 836 } else { | |
| 837 needSafepoint++; | |
| 838 } | |
| 839 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend | |
| 840 } | |
| 841 if (needSafepoint > 0) { | |
| 842 VM_ForceSafepoint vfs; | |
| 843 VMThread::execute(&vfs); | |
| 844 } | |
| 845 // per-thread suspend results returned via results parameter | |
| 846 return JVMTI_ERROR_NONE; | |
| 847 } /* end SuspendThreadList */ | |
| 848 | |
| 849 | |
| 850 // Threads_lock NOT held, java_thread not protected by lock | |
| 851 // java_thread - pre-checked | |
| 852 jvmtiError | |
| 853 JvmtiEnv::ResumeThread(JavaThread* java_thread) { | |
| 854 // don't allow hidden thread resume request. | |
| 855 if (java_thread->is_hidden_from_external_view()) { | |
| 856 return JVMTI_ERROR_NONE; | |
| 857 } | |
| 858 | |
| 859 if (!java_thread->is_being_ext_suspended()) { | |
| 860 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
| 861 } | |
| 862 | |
| 863 if (!JvmtiSuspendControl::resume(java_thread)) { | |
| 864 return JVMTI_ERROR_INTERNAL; | |
| 865 } | |
| 866 return JVMTI_ERROR_NONE; | |
| 867 } /* end ResumeThread */ | |
| 868 | |
| 869 | |
| 870 // request_count - pre-checked to be greater than or equal to 0 | |
| 871 // request_list - pre-checked for NULL | |
| 872 // results - pre-checked for NULL | |
| 873 jvmtiError | |
| 874 JvmtiEnv::ResumeThreadList(jint request_count, const jthread* request_list, jvmtiError* results) { | |
| 875 for (int i = 0; i < request_count; i++) { | |
| 876 JavaThread *java_thread = get_JavaThread(request_list[i]); | |
| 877 if (java_thread == NULL) { | |
| 878 results[i] = JVMTI_ERROR_INVALID_THREAD; | |
| 879 continue; | |
| 880 } | |
| 881 // don't allow hidden thread resume request. | |
| 882 if (java_thread->is_hidden_from_external_view()) { | |
| 883 results[i] = JVMTI_ERROR_NONE; // indicate successful resume | |
| 884 continue; | |
| 885 } | |
| 886 if (!java_thread->is_being_ext_suspended()) { | |
| 887 results[i] = JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
| 888 continue; | |
| 889 } | |
| 890 | |
| 891 if (!JvmtiSuspendControl::resume(java_thread)) { | |
| 892 results[i] = JVMTI_ERROR_INTERNAL; | |
| 893 continue; | |
| 894 } | |
| 895 | |
| 896 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend | |
| 897 } | |
| 898 // per-thread resume results returned via results parameter | |
| 899 return JVMTI_ERROR_NONE; | |
| 900 } /* end ResumeThreadList */ | |
| 901 | |
| 902 | |
| 903 // Threads_lock NOT held, java_thread not protected by lock | |
| 904 // java_thread - pre-checked | |
| 905 jvmtiError | |
| 906 JvmtiEnv::StopThread(JavaThread* java_thread, jobject exception) { | |
| 907 oop e = JNIHandles::resolve_external_guard(exception); | |
| 908 NULL_CHECK(e, JVMTI_ERROR_NULL_POINTER); | |
| 909 | |
| 910 JavaThread::send_async_exception(java_thread->threadObj(), e); | |
| 911 | |
| 912 return JVMTI_ERROR_NONE; | |
| 913 | |
| 914 } /* end StopThread */ | |
| 915 | |
| 916 | |
| 917 // Threads_lock NOT held | |
| 918 // thread - NOT pre-checked | |
| 919 jvmtiError | |
| 920 JvmtiEnv::InterruptThread(jthread thread) { | |
| 921 oop thread_oop = JNIHandles::resolve_external_guard(thread); | |
| 1142 | 922 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) |
| 0 | 923 return JVMTI_ERROR_INVALID_THREAD; |
| 924 | |
| 925 JavaThread* current_thread = JavaThread::current(); | |
| 926 | |
| 927 // Todo: this is a duplicate of JVM_Interrupt; share code in future | |
| 928 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 929 MutexLockerEx ml(current_thread->threadObj() == thread_oop ? NULL : Threads_lock); | |
| 930 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 931 // acquire of the lock | |
| 932 | |
| 933 JavaThread* java_thread = java_lang_Thread::thread(JNIHandles::resolve_external_guard(thread)); | |
| 934 NULL_CHECK(java_thread, JVMTI_ERROR_THREAD_NOT_ALIVE); | |
| 935 | |
| 936 Thread::interrupt(java_thread); | |
| 937 | |
| 938 return JVMTI_ERROR_NONE; | |
| 939 } /* end InterruptThread */ | |
| 940 | |
| 941 | |
| 942 // Threads_lock NOT held | |
| 943 // thread - NOT pre-checked | |
| 944 // info_ptr - pre-checked for NULL | |
| 945 jvmtiError | |
| 946 JvmtiEnv::GetThreadInfo(jthread thread, jvmtiThreadInfo* info_ptr) { | |
| 947 ResourceMark rm; | |
| 948 HandleMark hm; | |
| 949 | |
| 950 JavaThread* current_thread = JavaThread::current(); | |
| 951 | |
| 952 // if thread is NULL the current thread is used | |
| 953 oop thread_oop; | |
| 954 if (thread == NULL) { | |
| 955 thread_oop = current_thread->threadObj(); | |
| 956 } else { | |
| 957 thread_oop = JNIHandles::resolve_external_guard(thread); | |
| 958 } | |
| 1142 | 959 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) |
| 0 | 960 return JVMTI_ERROR_INVALID_THREAD; |
| 961 | |
| 962 Handle thread_obj(current_thread, thread_oop); | |
| 963 typeArrayHandle name; | |
| 964 ThreadPriority priority; | |
| 965 Handle thread_group; | |
| 966 Handle context_class_loader; | |
| 967 bool is_daemon; | |
| 968 | |
| 969 { MutexLocker mu(Threads_lock); | |
| 970 | |
| 971 name = typeArrayHandle(current_thread, java_lang_Thread::name(thread_obj())); | |
| 972 priority = java_lang_Thread::priority(thread_obj()); | |
| 973 thread_group = Handle(current_thread, java_lang_Thread::threadGroup(thread_obj())); | |
| 974 is_daemon = java_lang_Thread::is_daemon(thread_obj()); | |
| 975 | |
| 976 oop loader = java_lang_Thread::context_class_loader(thread_obj()); | |
| 977 context_class_loader = Handle(current_thread, loader); | |
| 978 } | |
| 979 { const char *n; | |
| 980 | |
| 981 if (name() != NULL) { | |
| 982 n = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length()); | |
| 983 } else { | |
| 984 n = UNICODE::as_utf8(NULL, 0); | |
| 985 } | |
| 986 | |
| 987 info_ptr->name = (char *) jvmtiMalloc(strlen(n)+1); | |
| 988 if (info_ptr->name == NULL) | |
| 989 return JVMTI_ERROR_OUT_OF_MEMORY; | |
| 990 | |
| 991 strcpy(info_ptr->name, n); | |
| 992 } | |
| 993 info_ptr->is_daemon = is_daemon; | |
| 994 info_ptr->priority = priority; | |
| 995 | |
| 996 info_ptr->context_class_loader = (context_class_loader.is_null()) ? NULL : | |
| 997 jni_reference(context_class_loader); | |
| 998 info_ptr->thread_group = jni_reference(thread_group); | |
| 999 | |
| 1000 return JVMTI_ERROR_NONE; | |
| 1001 } /* end GetThreadInfo */ | |
| 1002 | |
| 1003 | |
| 1004 // Threads_lock NOT held, java_thread not protected by lock | |
| 1005 // java_thread - pre-checked | |
| 1006 // owned_monitor_count_ptr - pre-checked for NULL | |
| 1007 // owned_monitors_ptr - pre-checked for NULL | |
| 1008 jvmtiError | |
| 1009 JvmtiEnv::GetOwnedMonitorInfo(JavaThread* java_thread, jint* owned_monitor_count_ptr, jobject** owned_monitors_ptr) { | |
| 1010 jvmtiError err = JVMTI_ERROR_NONE; | |
| 1011 JavaThread* calling_thread = JavaThread::current(); | |
| 1012 | |
| 1013 // growable array of jvmti monitors info on the C-heap | |
| 1014 GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list = | |
| 6197 | 1015 new (ResourceObj::C_HEAP, mtInternal) GrowableArray<jvmtiMonitorStackDepthInfo*>(1, true); |
| 0 | 1016 |
| 1017 uint32_t debug_bits = 0; | |
| 1018 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
| 1019 err = get_owned_monitors(calling_thread, java_thread, owned_monitors_list); | |
| 1020 } else { | |
| 1021 // JVMTI get monitors info at safepoint. Do not require target thread to | |
| 1022 // be suspended. | |
| 1023 VM_GetOwnedMonitorInfo op(this, calling_thread, java_thread, owned_monitors_list); | |
| 1024 VMThread::execute(&op); | |
| 1025 err = op.result(); | |
| 1026 } | |
| 1027 jint owned_monitor_count = owned_monitors_list->length(); | |
| 1028 if (err == JVMTI_ERROR_NONE) { | |
| 1029 if ((err = allocate(owned_monitor_count * sizeof(jobject *), | |
| 1030 (unsigned char**)owned_monitors_ptr)) == JVMTI_ERROR_NONE) { | |
| 1031 // copy into the returned array | |
| 1032 for (int i = 0; i < owned_monitor_count; i++) { | |
| 1033 (*owned_monitors_ptr)[i] = | |
| 1034 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->monitor; | |
| 1035 } | |
| 1036 *owned_monitor_count_ptr = owned_monitor_count; | |
| 1037 } | |
| 1038 } | |
| 1039 // clean up. | |
| 1040 for (int i = 0; i < owned_monitor_count; i++) { | |
| 1041 deallocate((unsigned char*)owned_monitors_list->at(i)); | |
| 1042 } | |
| 1043 delete owned_monitors_list; | |
| 1044 | |
| 1045 return err; | |
| 1046 } /* end GetOwnedMonitorInfo */ | |
| 1047 | |
| 1048 | |
| 1049 // Threads_lock NOT held, java_thread not protected by lock | |
| 1050 // java_thread - pre-checked | |
| 1051 // monitor_info_count_ptr - pre-checked for NULL | |
| 1052 // monitor_info_ptr - pre-checked for NULL | |
| 1053 jvmtiError | |
| 1054 JvmtiEnv::GetOwnedMonitorStackDepthInfo(JavaThread* java_thread, jint* monitor_info_count_ptr, jvmtiMonitorStackDepthInfo** monitor_info_ptr) { | |
| 1055 jvmtiError err = JVMTI_ERROR_NONE; | |
| 1056 JavaThread* calling_thread = JavaThread::current(); | |
| 1057 | |
| 1058 // growable array of jvmti monitors info on the C-heap | |
| 1059 GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list = | |
| 6197 | 1060 new (ResourceObj::C_HEAP, mtInternal) GrowableArray<jvmtiMonitorStackDepthInfo*>(1, true); |
| 0 | 1061 |
| 1062 uint32_t debug_bits = 0; | |
| 1063 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
| 1064 err = get_owned_monitors(calling_thread, java_thread, owned_monitors_list); | |
| 1065 } else { | |
| 1066 // JVMTI get owned monitors info at safepoint. Do not require target thread to | |
| 1067 // be suspended. | |
| 1068 VM_GetOwnedMonitorInfo op(this, calling_thread, java_thread, owned_monitors_list); | |
| 1069 VMThread::execute(&op); | |
| 1070 err = op.result(); | |
| 1071 } | |
| 1072 | |
| 1073 jint owned_monitor_count = owned_monitors_list->length(); | |
| 1074 if (err == JVMTI_ERROR_NONE) { | |
| 1075 if ((err = allocate(owned_monitor_count * sizeof(jvmtiMonitorStackDepthInfo), | |
| 1076 (unsigned char**)monitor_info_ptr)) == JVMTI_ERROR_NONE) { | |
| 1077 // copy to output array. | |
| 1078 for (int i = 0; i < owned_monitor_count; i++) { | |
| 1079 (*monitor_info_ptr)[i].monitor = | |
| 1080 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->monitor; | |
| 1081 (*monitor_info_ptr)[i].stack_depth = | |
| 1082 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->stack_depth; | |
| 1083 } | |
| 1084 } | |
| 1085 *monitor_info_count_ptr = owned_monitor_count; | |
| 1086 } | |
| 1087 | |
| 1088 // clean up. | |
| 1089 for (int i = 0; i < owned_monitor_count; i++) { | |
| 1090 deallocate((unsigned char*)owned_monitors_list->at(i)); | |
| 1091 } | |
| 1092 delete owned_monitors_list; | |
| 1093 | |
| 1094 return err; | |
| 1095 } /* end GetOwnedMonitorStackDepthInfo */ | |
| 1096 | |
| 1097 | |
| 1098 // Threads_lock NOT held, java_thread not protected by lock | |
| 1099 // java_thread - pre-checked | |
| 1100 // monitor_ptr - pre-checked for NULL | |
| 1101 jvmtiError | |
| 1102 JvmtiEnv::GetCurrentContendedMonitor(JavaThread* java_thread, jobject* monitor_ptr) { | |
| 1103 jvmtiError err = JVMTI_ERROR_NONE; | |
| 1104 uint32_t debug_bits = 0; | |
| 1105 JavaThread* calling_thread = JavaThread::current(); | |
| 1106 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
| 1107 err = get_current_contended_monitor(calling_thread, java_thread, monitor_ptr); | |
| 1108 } else { | |
| 1109 // get contended monitor information at safepoint. | |
| 1110 VM_GetCurrentContendedMonitor op(this, calling_thread, java_thread, monitor_ptr); | |
| 1111 VMThread::execute(&op); | |
| 1112 err = op.result(); | |
| 1113 } | |
| 1114 return err; | |
| 1115 } /* end GetCurrentContendedMonitor */ | |
| 1116 | |
| 1117 | |
| 1118 // Threads_lock NOT held | |
| 1119 // thread - NOT pre-checked | |
| 1120 // proc - pre-checked for NULL | |
| 1121 // arg - NULL is a valid value, must be checked | |
| 1122 jvmtiError | |
| 1123 JvmtiEnv::RunAgentThread(jthread thread, jvmtiStartFunction proc, const void* arg, jint priority) { | |
| 1124 oop thread_oop = JNIHandles::resolve_external_guard(thread); | |
| 1142 | 1125 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) { |
| 0 | 1126 return JVMTI_ERROR_INVALID_THREAD; |
| 1127 } | |
| 1128 if (priority < JVMTI_THREAD_MIN_PRIORITY || priority > JVMTI_THREAD_MAX_PRIORITY) { | |
| 1129 return JVMTI_ERROR_INVALID_PRIORITY; | |
| 1130 } | |
| 1131 | |
| 1132 //Thread-self | |
| 1133 JavaThread* current_thread = JavaThread::current(); | |
| 1134 | |
| 1135 Handle thread_hndl(current_thread, thread_oop); | |
| 1136 { | |
| 1137 MutexLocker mu(Threads_lock); // grab Threads_lock | |
| 1138 | |
| 1139 JvmtiAgentThread *new_thread = new JvmtiAgentThread(this, proc, arg); | |
| 1140 | |
| 1141 // At this point it may be possible that no osthread was created for the | |
| 1142 // JavaThread due to lack of memory. | |
| 1143 if (new_thread == NULL || new_thread->osthread() == NULL) { | |
| 1144 if (new_thread) delete new_thread; | |
| 1145 return JVMTI_ERROR_OUT_OF_MEMORY; | |
| 1146 } | |
| 1147 | |
| 1148 java_lang_Thread::set_thread(thread_hndl(), new_thread); | |
| 1149 java_lang_Thread::set_priority(thread_hndl(), (ThreadPriority)priority); | |
| 1150 java_lang_Thread::set_daemon(thread_hndl()); | |
| 1151 | |
| 1152 new_thread->set_threadObj(thread_hndl()); | |
| 1153 Threads::add(new_thread); | |
| 1154 Thread::start(new_thread); | |
| 1155 } // unlock Threads_lock | |
| 1156 | |
| 1157 return JVMTI_ERROR_NONE; | |
| 1158 } /* end RunAgentThread */ | |
| 1159 | |
| 1160 // | |
| 1161 // Thread Group functions | |
| 1162 // | |
| 1163 | |
| 1164 // group_count_ptr - pre-checked for NULL | |
| 1165 // groups_ptr - pre-checked for NULL | |
| 1166 jvmtiError | |
| 1167 JvmtiEnv::GetTopThreadGroups(jint* group_count_ptr, jthreadGroup** groups_ptr) { | |
| 1168 JavaThread* current_thread = JavaThread::current(); | |
| 1169 | |
| 1170 // Only one top level thread group now. | |
| 1171 *group_count_ptr = 1; | |
| 1172 | |
| 1173 // Allocate memory to store global-refs to the thread groups. | |
| 1174 // Assume this area is freed by caller. | |
| 1175 *groups_ptr = (jthreadGroup *) jvmtiMalloc((sizeof(jthreadGroup)) * (*group_count_ptr)); | |
| 1176 | |
| 1177 NULL_CHECK(*groups_ptr, JVMTI_ERROR_OUT_OF_MEMORY); | |
| 1178 | |
| 1179 // Convert oop to Handle, then convert Handle to global-ref. | |
| 1180 { | |
| 1181 HandleMark hm(current_thread); | |
| 1182 Handle system_thread_group(current_thread, Universe::system_thread_group()); | |
| 1183 *groups_ptr[0] = jni_reference(system_thread_group); | |
| 1184 } | |
| 1185 | |
| 1186 return JVMTI_ERROR_NONE; | |
| 1187 } /* end GetTopThreadGroups */ | |
| 1188 | |
| 1189 | |
| 1190 // info_ptr - pre-checked for NULL | |
| 1191 jvmtiError | |
| 1192 JvmtiEnv::GetThreadGroupInfo(jthreadGroup group, jvmtiThreadGroupInfo* info_ptr) { | |
| 1193 ResourceMark rm; | |
| 1194 HandleMark hm; | |
| 1195 | |
| 1196 JavaThread* current_thread = JavaThread::current(); | |
| 1197 | |
| 1198 Handle group_obj (current_thread, JNIHandles::resolve_external_guard(group)); | |
| 1199 NULL_CHECK(group_obj(), JVMTI_ERROR_INVALID_THREAD_GROUP); | |
| 1200 | |
| 1201 typeArrayHandle name; | |
| 1202 Handle parent_group; | |
| 1203 bool is_daemon; | |
| 1204 ThreadPriority max_priority; | |
| 1205 | |
| 1206 { MutexLocker mu(Threads_lock); | |
| 1207 | |
| 1208 name = typeArrayHandle(current_thread, | |
| 1209 java_lang_ThreadGroup::name(group_obj())); | |
| 1210 parent_group = Handle(current_thread, java_lang_ThreadGroup::parent(group_obj())); | |
| 1211 is_daemon = java_lang_ThreadGroup::is_daemon(group_obj()); | |
| 1212 max_priority = java_lang_ThreadGroup::maxPriority(group_obj()); | |
| 1213 } | |
| 1214 | |
| 1215 info_ptr->is_daemon = is_daemon; | |
| 1216 info_ptr->max_priority = max_priority; | |
| 1217 info_ptr->parent = jni_reference(parent_group); | |
| 1218 | |
| 1219 if (name() != NULL) { | |
| 1220 const char* n = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length()); | |
| 1221 info_ptr->name = (char *)jvmtiMalloc(strlen(n)+1); | |
| 1222 NULL_CHECK(info_ptr->name, JVMTI_ERROR_OUT_OF_MEMORY); | |
| 1223 strcpy(info_ptr->name, n); | |
| 1224 } else { | |
| 1225 info_ptr->name = NULL; | |
| 1226 } | |
| 1227 | |
| 1228 return JVMTI_ERROR_NONE; | |
| 1229 } /* end GetThreadGroupInfo */ | |
| 1230 | |
| 1231 | |
| 1232 // thread_count_ptr - pre-checked for NULL | |
| 1233 // threads_ptr - pre-checked for NULL | |
| 1234 // group_count_ptr - pre-checked for NULL | |
| 1235 // groups_ptr - pre-checked for NULL | |
| 1236 jvmtiError | |
| 1237 JvmtiEnv::GetThreadGroupChildren(jthreadGroup group, jint* thread_count_ptr, jthread** threads_ptr, jint* group_count_ptr, jthreadGroup** groups_ptr) { | |
| 1238 JavaThread* current_thread = JavaThread::current(); | |
| 1239 oop group_obj = (oop) JNIHandles::resolve_external_guard(group); | |
| 1240 NULL_CHECK(group_obj, JVMTI_ERROR_INVALID_THREAD_GROUP); | |
| 1241 | |
| 1242 Handle *thread_objs = NULL; | |
| 1243 Handle *group_objs = NULL; | |
| 1244 int nthreads = 0; | |
| 1245 int ngroups = 0; | |
| 1246 int hidden_threads = 0; | |
| 1247 | |
| 1248 ResourceMark rm; | |
| 1249 HandleMark hm; | |
| 1250 | |
| 1251 Handle group_hdl(current_thread, group_obj); | |
| 1252 | |
| 1253 { MutexLocker mu(Threads_lock); | |
| 1254 | |
| 1255 nthreads = java_lang_ThreadGroup::nthreads(group_hdl()); | |
| 1256 ngroups = java_lang_ThreadGroup::ngroups(group_hdl()); | |
| 1257 | |
| 1258 if (nthreads > 0) { | |
| 1259 objArrayOop threads = java_lang_ThreadGroup::threads(group_hdl()); | |
| 1260 assert(nthreads <= threads->length(), "too many threads"); | |
| 1261 thread_objs = NEW_RESOURCE_ARRAY(Handle,nthreads); | |
| 1262 for (int i=0, j=0; i<nthreads; i++) { | |
| 1263 oop thread_obj = threads->obj_at(i); | |
| 1264 assert(thread_obj != NULL, "thread_obj is NULL"); | |
| 1265 JavaThread *javathread = java_lang_Thread::thread(thread_obj); | |
| 1266 // Filter out hidden java threads. | |
| 1267 if (javathread != NULL && javathread->is_hidden_from_external_view()) { | |
| 1268 hidden_threads++; | |
| 1269 continue; | |
| 1270 } | |
| 1271 thread_objs[j++] = Handle(current_thread, thread_obj); | |
| 1272 } | |
| 1273 nthreads -= hidden_threads; | |
| 1274 } | |
| 1275 if (ngroups > 0) { | |
| 1276 objArrayOop groups = java_lang_ThreadGroup::groups(group_hdl()); | |
| 1277 assert(ngroups <= groups->length(), "too many threads"); | |
| 1278 group_objs = NEW_RESOURCE_ARRAY(Handle,ngroups); | |
| 1279 for (int i=0; i<ngroups; i++) { | |
| 1280 oop group_obj = groups->obj_at(i); | |
| 1281 assert(group_obj != NULL, "group_obj != NULL"); | |
| 1282 group_objs[i] = Handle(current_thread, group_obj); | |
| 1283 } | |
| 1284 } | |
| 1285 } | |
| 1286 | |
| 1287 // have to make global handles outside of Threads_lock | |
| 1288 *group_count_ptr = ngroups; | |
| 1289 *thread_count_ptr = nthreads; | |
| 1290 *threads_ptr = new_jthreadArray(nthreads, thread_objs); | |
| 1291 *groups_ptr = new_jthreadGroupArray(ngroups, group_objs); | |
| 1292 if ((nthreads > 0) && (*threads_ptr == NULL)) { | |
| 1293 return JVMTI_ERROR_OUT_OF_MEMORY; | |
| 1294 } | |
| 1295 if ((ngroups > 0) && (*groups_ptr == NULL)) { | |
| 1296 return JVMTI_ERROR_OUT_OF_MEMORY; | |
| 1297 } | |
| 1298 | |
| 1299 return JVMTI_ERROR_NONE; | |
| 1300 } /* end GetThreadGroupChildren */ | |
| 1301 | |
| 1302 | |
| 1303 // | |
| 1304 // Stack Frame functions | |
| 1305 // | |
| 1306 | |
| 1307 // Threads_lock NOT held, java_thread not protected by lock | |
| 1308 // java_thread - pre-checked | |
| 1309 // max_frame_count - pre-checked to be greater than or equal to 0 | |
| 1310 // frame_buffer - pre-checked for NULL | |
| 1311 // count_ptr - pre-checked for NULL | |
| 1312 jvmtiError | |
| 1313 JvmtiEnv::GetStackTrace(JavaThread* java_thread, jint start_depth, jint max_frame_count, jvmtiFrameInfo* frame_buffer, jint* count_ptr) { | |
| 1314 jvmtiError err = JVMTI_ERROR_NONE; | |
| 1315 uint32_t debug_bits = 0; | |
| 1316 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
| 1317 err = get_stack_trace(java_thread, start_depth, max_frame_count, frame_buffer, count_ptr); | |
| 1318 } else { | |
| 1319 // JVMTI get stack trace at safepoint. Do not require target thread to | |
| 1320 // be suspended. | |
| 1321 VM_GetStackTrace op(this, java_thread, start_depth, max_frame_count, frame_buffer, count_ptr); | |
| 1322 VMThread::execute(&op); | |
| 1323 err = op.result(); | |
| 1324 } | |
| 1325 | |
| 1326 return err; | |
| 1327 } /* end GetStackTrace */ | |
| 1328 | |
| 1329 | |
| 1330 // max_frame_count - pre-checked to be greater than or equal to 0 | |
| 1331 // stack_info_ptr - pre-checked for NULL | |
| 1332 // thread_count_ptr - pre-checked for NULL | |
| 1333 jvmtiError | |
| 1334 JvmtiEnv::GetAllStackTraces(jint max_frame_count, jvmtiStackInfo** stack_info_ptr, jint* thread_count_ptr) { | |
| 1335 jvmtiError err = JVMTI_ERROR_NONE; | |
| 1336 JavaThread* calling_thread = JavaThread::current(); | |
| 1337 | |
| 1338 // JVMTI get stack traces at safepoint. | |
| 1339 VM_GetAllStackTraces op(this, calling_thread, max_frame_count); | |
| 1340 VMThread::execute(&op); | |
| 1341 *thread_count_ptr = op.final_thread_count(); | |
| 1342 *stack_info_ptr = op.stack_info(); | |
| 1343 err = op.result(); | |
| 1344 return err; | |
| 1345 } /* end GetAllStackTraces */ | |
| 1346 | |
| 1347 | |
| 1348 // thread_count - pre-checked to be greater than or equal to 0 | |
| 1349 // thread_list - pre-checked for NULL | |
| 1350 // max_frame_count - pre-checked to be greater than or equal to 0 | |
| 1351 // stack_info_ptr - pre-checked for NULL | |
| 1352 jvmtiError | |
| 1353 JvmtiEnv::GetThreadListStackTraces(jint thread_count, const jthread* thread_list, jint max_frame_count, jvmtiStackInfo** stack_info_ptr) { | |
| 1354 jvmtiError err = JVMTI_ERROR_NONE; | |
| 1355 // JVMTI get stack traces at safepoint. | |
| 1356 VM_GetThreadListStackTraces op(this, thread_count, thread_list, max_frame_count); | |
| 1357 VMThread::execute(&op); | |
| 1358 err = op.result(); | |
| 1359 if (err == JVMTI_ERROR_NONE) { | |
| 1360 *stack_info_ptr = op.stack_info(); | |
| 1361 } | |
| 1362 return err; | |
| 1363 } /* end GetThreadListStackTraces */ | |
| 1364 | |
| 1365 | |
| 1366 // Threads_lock NOT held, java_thread not protected by lock | |
| 1367 // java_thread - pre-checked | |
| 1368 // count_ptr - pre-checked for NULL | |
| 1369 jvmtiError | |
| 1370 JvmtiEnv::GetFrameCount(JavaThread* java_thread, jint* count_ptr) { | |
| 1371 jvmtiError err = JVMTI_ERROR_NONE; | |
| 1372 | |
| 1373 // retrieve or create JvmtiThreadState. | |
| 1374 JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread); | |
|
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1375 if (state == NULL) { |
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1376 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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1377 } |
| 0 | 1378 uint32_t debug_bits = 0; |
| 1379 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
| 1380 err = get_frame_count(state, count_ptr); | |
| 1381 } else { | |
| 1382 // get java stack frame count at safepoint. | |
| 1383 VM_GetFrameCount op(this, state, count_ptr); | |
| 1384 VMThread::execute(&op); | |
| 1385 err = op.result(); | |
| 1386 } | |
| 1387 return err; | |
| 1388 } /* end GetFrameCount */ | |
| 1389 | |
| 1390 | |
| 1391 // Threads_lock NOT held, java_thread not protected by lock | |
| 1392 // java_thread - pre-checked | |
| 1393 jvmtiError | |
| 1394 JvmtiEnv::PopFrame(JavaThread* java_thread) { | |
| 1395 JavaThread* current_thread = JavaThread::current(); | |
| 1396 HandleMark hm(current_thread); | |
| 1397 uint32_t debug_bits = 0; | |
| 1398 | |
|
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1399 // retrieve or create the state |
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1400 JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread); |
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1401 if (state == NULL) { |
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1402 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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1403 } |
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1404 |
| 0 | 1405 // Check if java_thread is fully suspended |
| 1406 if (!is_thread_fully_suspended(java_thread, true /* wait for suspend completion */, &debug_bits)) { | |
| 1407 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
| 1408 } | |
| 1409 // Check to see if a PopFrame was already in progress | |
| 1410 if (java_thread->popframe_condition() != JavaThread::popframe_inactive) { | |
| 1411 // Probably possible for JVMTI clients to trigger this, but the | |
| 1412 // JPDA backend shouldn't allow this to happen | |
| 1413 return JVMTI_ERROR_INTERNAL; | |
| 1414 } | |
| 1415 | |
| 1416 { | |
| 1417 // Was workaround bug | |
| 1418 // 4812902: popFrame hangs if the method is waiting at a synchronize | |
| 1419 // Catch this condition and return an error to avoid hanging. | |
| 1420 // Now JVMTI spec allows an implementation to bail out with an opaque frame error. | |
| 1421 OSThread* osThread = java_thread->osthread(); | |
| 1422 if (osThread->get_state() == MONITOR_WAIT) { | |
| 1423 return JVMTI_ERROR_OPAQUE_FRAME; | |
| 1424 } | |
| 1425 } | |
| 1426 | |
| 1427 { | |
| 1428 ResourceMark rm(current_thread); | |
| 1429 // Check if there are more than one Java frame in this thread, that the top two frames | |
| 1430 // are Java (not native) frames, and that there is no intervening VM frame | |
| 1431 int frame_count = 0; | |
| 1432 bool is_interpreted[2]; | |
| 1433 intptr_t *frame_sp[2]; | |
| 1434 // The 2-nd arg of constructor is needed to stop iterating at java entry frame. | |
| 1435 for (vframeStream vfs(java_thread, true); !vfs.at_end(); vfs.next()) { | |
| 1436 methodHandle mh(current_thread, vfs.method()); | |
| 1437 if (mh->is_native()) return(JVMTI_ERROR_OPAQUE_FRAME); | |
| 1438 is_interpreted[frame_count] = vfs.is_interpreted_frame(); | |
| 1439 frame_sp[frame_count] = vfs.frame_id(); | |
| 1440 if (++frame_count > 1) break; | |
| 1441 } | |
| 1442 if (frame_count < 2) { | |
| 1443 // We haven't found two adjacent non-native Java frames on the top. | |
| 1444 // There can be two situations here: | |
| 1445 // 1. There are no more java frames | |
| 1446 // 2. Two top java frames are separated by non-java native frames | |
| 1447 if(vframeFor(java_thread, 1) == NULL) { | |
| 1448 return JVMTI_ERROR_NO_MORE_FRAMES; | |
| 1449 } else { | |
| 1450 // Intervening non-java native or VM frames separate java frames. | |
| 1451 // Current implementation does not support this. See bug #5031735. | |
| 1452 // In theory it is possible to pop frames in such cases. | |
| 1453 return JVMTI_ERROR_OPAQUE_FRAME; | |
| 1454 } | |
| 1455 } | |
| 1456 | |
| 1457 // If any of the top 2 frames is a compiled one, need to deoptimize it | |
| 1458 for (int i = 0; i < 2; i++) { | |
| 1459 if (!is_interpreted[i]) { | |
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1460 Deoptimization::deoptimize_frame(java_thread, frame_sp[i]); |
| 0 | 1461 } |
| 1462 } | |
| 1463 | |
| 1464 // Update the thread state to reflect that the top frame is popped | |
| 1465 // so that cur_stack_depth is maintained properly and all frameIDs | |
| 1466 // are invalidated. | |
| 1467 // The current frame will be popped later when the suspended thread | |
| 1468 // is resumed and right before returning from VM to Java. | |
| 1469 // (see call_VM_base() in assembler_<cpu>.cpp). | |
| 1470 | |
| 1471 // It's fine to update the thread state here because no JVMTI events | |
| 1472 // shall be posted for this PopFrame. | |
| 1473 | |
| 1474 state->update_for_pop_top_frame(); | |
| 1475 java_thread->set_popframe_condition(JavaThread::popframe_pending_bit); | |
| 1476 // Set pending step flag for this popframe and it is cleared when next | |
| 1477 // step event is posted. | |
| 1478 state->set_pending_step_for_popframe(); | |
| 1479 } | |
| 1480 | |
| 1481 return JVMTI_ERROR_NONE; | |
| 1482 } /* end PopFrame */ | |
| 1483 | |
| 1484 | |
| 1485 // Threads_lock NOT held, java_thread not protected by lock | |
| 1486 // java_thread - pre-checked | |
| 1487 // java_thread - unchecked | |
| 1488 // depth - pre-checked as non-negative | |
| 1489 // method_ptr - pre-checked for NULL | |
| 1490 // location_ptr - pre-checked for NULL | |
| 1491 jvmtiError | |
| 1492 JvmtiEnv::GetFrameLocation(JavaThread* java_thread, jint depth, jmethodID* method_ptr, jlocation* location_ptr) { | |
| 1493 jvmtiError err = JVMTI_ERROR_NONE; | |
| 1494 uint32_t debug_bits = 0; | |
| 1495 | |
| 1496 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
| 1497 err = get_frame_location(java_thread, depth, method_ptr, location_ptr); | |
| 1498 } else { | |
| 1499 // JVMTI get java stack frame location at safepoint. | |
| 1500 VM_GetFrameLocation op(this, java_thread, depth, method_ptr, location_ptr); | |
| 1501 VMThread::execute(&op); | |
| 1502 err = op.result(); | |
| 1503 } | |
| 1504 return err; | |
| 1505 } /* end GetFrameLocation */ | |
| 1506 | |
| 1507 | |
| 1508 // Threads_lock NOT held, java_thread not protected by lock | |
| 1509 // java_thread - pre-checked | |
| 1510 // java_thread - unchecked | |
| 1511 // depth - pre-checked as non-negative | |
| 1512 jvmtiError | |
| 1513 JvmtiEnv::NotifyFramePop(JavaThread* java_thread, jint depth) { | |
| 1514 ResourceMark rm; | |
| 1515 uint32_t debug_bits = 0; | |
| 1516 | |
|
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1517 JvmtiThreadState *state = JvmtiThreadState::state_for(java_thread); |
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1518 if (state == NULL) { |
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1519 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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1520 } |
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1521 |
| 0 | 1522 if (!JvmtiEnv::is_thread_fully_suspended(java_thread, true, &debug_bits)) { |
| 1523 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
| 1524 } | |
| 1525 | |
| 1526 if (TraceJVMTICalls) { | |
| 1527 JvmtiSuspendControl::print(); | |
| 1528 } | |
| 1529 | |
| 1530 vframe *vf = vframeFor(java_thread, depth); | |
| 1531 if (vf == NULL) { | |
| 1532 return JVMTI_ERROR_NO_MORE_FRAMES; | |
| 1533 } | |
| 1534 | |
| 1535 if (!vf->is_java_frame() || ((javaVFrame*) vf)->method()->is_native()) { | |
| 1536 return JVMTI_ERROR_OPAQUE_FRAME; | |
| 1537 } | |
| 1538 | |
| 1539 assert(vf->frame_pointer() != NULL, "frame pointer mustn't be NULL"); | |
| 1540 | |
| 1541 int frame_number = state->count_frames() - depth; | |
| 1542 state->env_thread_state(this)->set_frame_pop(frame_number); | |
| 1543 | |
| 1544 return JVMTI_ERROR_NONE; | |
| 1545 } /* end NotifyFramePop */ | |
| 1546 | |
| 1547 | |
| 1548 // | |
| 1549 // Force Early Return functions | |
| 1550 // | |
| 1551 | |
| 1552 // Threads_lock NOT held, java_thread not protected by lock | |
| 1553 // java_thread - pre-checked | |
| 1554 jvmtiError | |
| 1555 JvmtiEnv::ForceEarlyReturnObject(JavaThread* java_thread, jobject value) { | |
| 1556 jvalue val; | |
| 1557 val.l = value; | |
| 1558 return force_early_return(java_thread, val, atos); | |
| 1559 } /* end ForceEarlyReturnObject */ | |
| 1560 | |
| 1561 | |
| 1562 // Threads_lock NOT held, java_thread not protected by lock | |
| 1563 // java_thread - pre-checked | |
| 1564 jvmtiError | |
| 1565 JvmtiEnv::ForceEarlyReturnInt(JavaThread* java_thread, jint value) { | |
| 1566 jvalue val; | |
| 1567 val.i = value; | |
| 1568 return force_early_return(java_thread, val, itos); | |
| 1569 } /* end ForceEarlyReturnInt */ | |
| 1570 | |
| 1571 | |
| 1572 // Threads_lock NOT held, java_thread not protected by lock | |
| 1573 // java_thread - pre-checked | |
| 1574 jvmtiError | |
| 1575 JvmtiEnv::ForceEarlyReturnLong(JavaThread* java_thread, jlong value) { | |
| 1576 jvalue val; | |
| 1577 val.j = value; | |
| 1578 return force_early_return(java_thread, val, ltos); | |
| 1579 } /* end ForceEarlyReturnLong */ | |
| 1580 | |
| 1581 | |
| 1582 // Threads_lock NOT held, java_thread not protected by lock | |
| 1583 // java_thread - pre-checked | |
| 1584 jvmtiError | |
| 1585 JvmtiEnv::ForceEarlyReturnFloat(JavaThread* java_thread, jfloat value) { | |
| 1586 jvalue val; | |
| 1587 val.f = value; | |
| 1588 return force_early_return(java_thread, val, ftos); | |
| 1589 } /* end ForceEarlyReturnFloat */ | |
| 1590 | |
| 1591 | |
| 1592 // Threads_lock NOT held, java_thread not protected by lock | |
| 1593 // java_thread - pre-checked | |
| 1594 jvmtiError | |
| 1595 JvmtiEnv::ForceEarlyReturnDouble(JavaThread* java_thread, jdouble value) { | |
| 1596 jvalue val; | |
| 1597 val.d = value; | |
| 1598 return force_early_return(java_thread, val, dtos); | |
| 1599 } /* end ForceEarlyReturnDouble */ | |
| 1600 | |
| 1601 | |
| 1602 // Threads_lock NOT held, java_thread not protected by lock | |
| 1603 // java_thread - pre-checked | |
| 1604 jvmtiError | |
| 1605 JvmtiEnv::ForceEarlyReturnVoid(JavaThread* java_thread) { | |
| 1606 jvalue val; | |
| 1607 val.j = 0L; | |
| 1608 return force_early_return(java_thread, val, vtos); | |
| 1609 } /* end ForceEarlyReturnVoid */ | |
| 1610 | |
| 1611 | |
| 1612 // | |
| 1613 // Heap functions | |
| 1614 // | |
| 1615 | |
| 1616 // klass - NULL is a valid value, must be checked | |
| 1617 // initial_object - NULL is a valid value, must be checked | |
| 1618 // callbacks - pre-checked for NULL | |
| 1619 // user_data - NULL is a valid value, must be checked | |
| 1620 jvmtiError | |
| 1621 JvmtiEnv::FollowReferences(jint heap_filter, jclass klass, jobject initial_object, const jvmtiHeapCallbacks* callbacks, const void* user_data) { | |
| 1622 // check klass if provided | |
| 1623 klassOop k_oop = NULL; | |
| 1624 if (klass != NULL) { | |
| 1625 oop k_mirror = JNIHandles::resolve_external_guard(klass); | |
| 1626 if (k_mirror == NULL) { | |
| 1627 return JVMTI_ERROR_INVALID_CLASS; | |
| 1628 } | |
| 1629 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 1630 return JVMTI_ERROR_NONE; | |
| 1631 } | |
| 1632 k_oop = java_lang_Class::as_klassOop(k_mirror); | |
| 1633 if (k_oop == NULL) { | |
| 1634 return JVMTI_ERROR_INVALID_CLASS; | |
| 1635 } | |
| 1636 } | |
| 1637 | |
| 1638 Thread *thread = Thread::current(); | |
| 1639 HandleMark hm(thread); | |
| 1640 KlassHandle kh (thread, k_oop); | |
| 1641 | |
| 1642 TraceTime t("FollowReferences", TraceJVMTIObjectTagging); | |
| 1643 JvmtiTagMap::tag_map_for(this)->follow_references(heap_filter, kh, initial_object, callbacks, user_data); | |
| 1644 return JVMTI_ERROR_NONE; | |
| 1645 } /* end FollowReferences */ | |
| 1646 | |
| 1647 | |
| 1648 // klass - NULL is a valid value, must be checked | |
| 1649 // callbacks - pre-checked for NULL | |
| 1650 // user_data - NULL is a valid value, must be checked | |
| 1651 jvmtiError | |
| 1652 JvmtiEnv::IterateThroughHeap(jint heap_filter, jclass klass, const jvmtiHeapCallbacks* callbacks, const void* user_data) { | |
| 1653 // check klass if provided | |
| 1654 klassOop k_oop = NULL; | |
| 1655 if (klass != NULL) { | |
| 1656 oop k_mirror = JNIHandles::resolve_external_guard(klass); | |
| 1657 if (k_mirror == NULL) { | |
| 1658 return JVMTI_ERROR_INVALID_CLASS; | |
| 1659 } | |
| 1660 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 1661 return JVMTI_ERROR_NONE; | |
| 1662 } | |
| 1663 k_oop = java_lang_Class::as_klassOop(k_mirror); | |
| 1664 if (k_oop == NULL) { | |
| 1665 return JVMTI_ERROR_INVALID_CLASS; | |
| 1666 } | |
| 1667 } | |
| 1668 | |
| 1669 Thread *thread = Thread::current(); | |
| 1670 HandleMark hm(thread); | |
| 1671 KlassHandle kh (thread, k_oop); | |
| 1672 | |
| 1673 TraceTime t("IterateThroughHeap", TraceJVMTIObjectTagging); | |
| 1674 JvmtiTagMap::tag_map_for(this)->iterate_through_heap(heap_filter, kh, callbacks, user_data); | |
| 1675 return JVMTI_ERROR_NONE; | |
| 1676 } /* end IterateThroughHeap */ | |
| 1677 | |
| 1678 | |
| 1679 // tag_ptr - pre-checked for NULL | |
| 1680 jvmtiError | |
| 1681 JvmtiEnv::GetTag(jobject object, jlong* tag_ptr) { | |
| 1682 oop o = JNIHandles::resolve_external_guard(object); | |
| 1683 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
| 1684 *tag_ptr = JvmtiTagMap::tag_map_for(this)->get_tag(object); | |
| 1685 return JVMTI_ERROR_NONE; | |
| 1686 } /* end GetTag */ | |
| 1687 | |
| 1688 | |
| 1689 jvmtiError | |
| 1690 JvmtiEnv::SetTag(jobject object, jlong tag) { | |
| 1691 oop o = JNIHandles::resolve_external_guard(object); | |
| 1692 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
| 1693 JvmtiTagMap::tag_map_for(this)->set_tag(object, tag); | |
| 1694 return JVMTI_ERROR_NONE; | |
| 1695 } /* end SetTag */ | |
| 1696 | |
| 1697 | |
| 1698 // tag_count - pre-checked to be greater than or equal to 0 | |
| 1699 // tags - pre-checked for NULL | |
| 1700 // count_ptr - pre-checked for NULL | |
| 1701 // object_result_ptr - NULL is a valid value, must be checked | |
| 1702 // tag_result_ptr - NULL is a valid value, must be checked | |
| 1703 jvmtiError | |
| 1704 JvmtiEnv::GetObjectsWithTags(jint tag_count, const jlong* tags, jint* count_ptr, jobject** object_result_ptr, jlong** tag_result_ptr) { | |
| 1705 TraceTime t("GetObjectsWithTags", TraceJVMTIObjectTagging); | |
| 1706 return JvmtiTagMap::tag_map_for(this)->get_objects_with_tags((jlong*)tags, tag_count, count_ptr, object_result_ptr, tag_result_ptr); | |
| 1707 } /* end GetObjectsWithTags */ | |
| 1708 | |
| 1709 | |
| 1710 jvmtiError | |
| 1711 JvmtiEnv::ForceGarbageCollection() { | |
| 1712 Universe::heap()->collect(GCCause::_jvmti_force_gc); | |
| 1713 return JVMTI_ERROR_NONE; | |
| 1714 } /* end ForceGarbageCollection */ | |
| 1715 | |
| 1716 | |
| 1717 // | |
| 1718 // Heap (1.0) functions | |
| 1719 // | |
| 1720 | |
| 1721 // object_reference_callback - pre-checked for NULL | |
| 1722 // user_data - NULL is a valid value, must be checked | |
| 1723 jvmtiError | |
| 1724 JvmtiEnv::IterateOverObjectsReachableFromObject(jobject object, jvmtiObjectReferenceCallback object_reference_callback, const void* user_data) { | |
| 1725 oop o = JNIHandles::resolve_external_guard(object); | |
| 1726 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
| 1727 JvmtiTagMap::tag_map_for(this)->iterate_over_objects_reachable_from_object(object, object_reference_callback, user_data); | |
| 1728 return JVMTI_ERROR_NONE; | |
| 1729 } /* end IterateOverObjectsReachableFromObject */ | |
| 1730 | |
| 1731 | |
| 1732 // heap_root_callback - NULL is a valid value, must be checked | |
| 1733 // stack_ref_callback - NULL is a valid value, must be checked | |
| 1734 // object_ref_callback - NULL is a valid value, must be checked | |
| 1735 // user_data - NULL is a valid value, must be checked | |
| 1736 jvmtiError | |
| 1737 JvmtiEnv::IterateOverReachableObjects(jvmtiHeapRootCallback heap_root_callback, jvmtiStackReferenceCallback stack_ref_callback, jvmtiObjectReferenceCallback object_ref_callback, const void* user_data) { | |
| 1738 TraceTime t("IterateOverReachableObjects", TraceJVMTIObjectTagging); | |
| 1739 JvmtiTagMap::tag_map_for(this)->iterate_over_reachable_objects(heap_root_callback, stack_ref_callback, object_ref_callback, user_data); | |
| 1740 return JVMTI_ERROR_NONE; | |
| 1741 } /* end IterateOverReachableObjects */ | |
| 1742 | |
| 1743 | |
| 1744 // heap_object_callback - pre-checked for NULL | |
| 1745 // user_data - NULL is a valid value, must be checked | |
| 1746 jvmtiError | |
| 1747 JvmtiEnv::IterateOverHeap(jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) { | |
| 1748 TraceTime t("IterateOverHeap", TraceJVMTIObjectTagging); | |
| 1749 Thread *thread = Thread::current(); | |
| 1750 HandleMark hm(thread); | |
| 1751 JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, KlassHandle(), heap_object_callback, user_data); | |
| 1752 return JVMTI_ERROR_NONE; | |
| 1753 } /* end IterateOverHeap */ | |
| 1754 | |
| 1755 | |
| 1756 // k_mirror - may be primitive, this must be checked | |
| 1757 // heap_object_callback - pre-checked for NULL | |
| 1758 // user_data - NULL is a valid value, must be checked | |
| 1759 jvmtiError | |
| 1760 JvmtiEnv::IterateOverInstancesOfClass(oop k_mirror, jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) { | |
| 1761 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 1762 // DO PRIMITIVE CLASS PROCESSING | |
| 1763 return JVMTI_ERROR_NONE; | |
| 1764 } | |
| 1765 klassOop k_oop = java_lang_Class::as_klassOop(k_mirror); | |
| 1766 if (k_oop == NULL) { | |
| 1767 return JVMTI_ERROR_INVALID_CLASS; | |
| 1768 } | |
| 1769 Thread *thread = Thread::current(); | |
| 1770 HandleMark hm(thread); | |
| 1771 KlassHandle klass (thread, k_oop); | |
| 1772 TraceTime t("IterateOverInstancesOfClass", TraceJVMTIObjectTagging); | |
| 1773 JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, klass, heap_object_callback, user_data); | |
| 1774 return JVMTI_ERROR_NONE; | |
| 1775 } /* end IterateOverInstancesOfClass */ | |
| 1776 | |
| 1777 | |
| 1778 // | |
| 1779 // Local Variable functions | |
| 1780 // | |
| 1781 | |
| 1782 // Threads_lock NOT held, java_thread not protected by lock | |
| 1783 // java_thread - pre-checked | |
| 1784 // java_thread - unchecked | |
| 1785 // depth - pre-checked as non-negative | |
| 1786 // value_ptr - pre-checked for NULL | |
| 1787 jvmtiError | |
| 1788 JvmtiEnv::GetLocalObject(JavaThread* java_thread, jint depth, jint slot, jobject* value_ptr) { | |
| 1789 JavaThread* current_thread = JavaThread::current(); | |
| 1790 // rm object is created to clean up the javaVFrame created in | |
| 1791 // doit_prologue(), but after doit() is finished with it. | |
| 1792 ResourceMark rm(current_thread); | |
| 1793 | |
| 1794 VM_GetOrSetLocal op(java_thread, current_thread, depth, slot); | |
| 1795 VMThread::execute(&op); | |
| 1796 jvmtiError err = op.result(); | |
| 1797 if (err != JVMTI_ERROR_NONE) { | |
| 1798 return err; | |
| 1799 } else { | |
| 1800 *value_ptr = op.value().l; | |
| 1801 return JVMTI_ERROR_NONE; | |
| 1802 } | |
| 1803 } /* end GetLocalObject */ | |
| 1804 | |
| 2019 | 1805 // Threads_lock NOT held, java_thread not protected by lock |
| 1806 // java_thread - pre-checked | |
| 1807 // java_thread - unchecked | |
| 1808 // depth - pre-checked as non-negative | |
| 1809 // value - pre-checked for NULL | |
| 1810 jvmtiError | |
|
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1811 JvmtiEnv::GetLocalInstance(JavaThread* java_thread, jint depth, jobject* value_ptr){ |
| 2019 | 1812 JavaThread* current_thread = JavaThread::current(); |
| 1813 // rm object is created to clean up the javaVFrame created in | |
| 1814 // doit_prologue(), but after doit() is finished with it. | |
| 1815 ResourceMark rm(current_thread); | |
| 1816 | |
| 1817 VM_GetReceiver op(java_thread, current_thread, depth); | |
| 1818 VMThread::execute(&op); | |
| 1819 jvmtiError err = op.result(); | |
| 1820 if (err != JVMTI_ERROR_NONE) { | |
| 1821 return err; | |
| 1822 } else { | |
|
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1823 *value_ptr = op.value().l; |
| 2019 | 1824 return JVMTI_ERROR_NONE; |
| 1825 } | |
| 1826 } /* end GetLocalInstance */ | |
| 1827 | |
| 0 | 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 // value_ptr - pre-checked for NULL | |
| 1834 jvmtiError | |
| 1835 JvmtiEnv::GetLocalInt(JavaThread* java_thread, jint depth, jint slot, jint* value_ptr) { | |
| 1836 // rm object is created to clean up the javaVFrame created in | |
| 1837 // doit_prologue(), but after doit() is finished with it. | |
| 1838 ResourceMark rm; | |
| 1839 | |
| 1840 VM_GetOrSetLocal op(java_thread, depth, slot, T_INT); | |
| 1841 VMThread::execute(&op); | |
| 1842 *value_ptr = op.value().i; | |
| 1843 return op.result(); | |
| 1844 } /* end GetLocalInt */ | |
| 1845 | |
| 1846 | |
| 1847 // Threads_lock NOT held, java_thread not protected by lock | |
| 1848 // java_thread - pre-checked | |
| 1849 // java_thread - unchecked | |
| 1850 // depth - pre-checked as non-negative | |
| 1851 // value_ptr - pre-checked for NULL | |
| 1852 jvmtiError | |
| 1853 JvmtiEnv::GetLocalLong(JavaThread* java_thread, jint depth, jint slot, jlong* value_ptr) { | |
| 1854 // rm object is created to clean up the javaVFrame created in | |
| 1855 // doit_prologue(), but after doit() is finished with it. | |
| 1856 ResourceMark rm; | |
| 1857 | |
| 1858 VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG); | |
| 1859 VMThread::execute(&op); | |
| 1860 *value_ptr = op.value().j; | |
| 1861 return op.result(); | |
| 1862 } /* end GetLocalLong */ | |
| 1863 | |
| 1864 | |
| 1865 // Threads_lock NOT held, java_thread not protected by lock | |
| 1866 // java_thread - pre-checked | |
| 1867 // java_thread - unchecked | |
| 1868 // depth - pre-checked as non-negative | |
| 1869 // value_ptr - pre-checked for NULL | |
| 1870 jvmtiError | |
| 1871 JvmtiEnv::GetLocalFloat(JavaThread* java_thread, jint depth, jint slot, jfloat* value_ptr) { | |
| 1872 // rm object is created to clean up the javaVFrame created in | |
| 1873 // doit_prologue(), but after doit() is finished with it. | |
| 1874 ResourceMark rm; | |
| 1875 | |
| 1876 VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT); | |
| 1877 VMThread::execute(&op); | |
| 1878 *value_ptr = op.value().f; | |
| 1879 return op.result(); | |
| 1880 } /* end GetLocalFloat */ | |
| 1881 | |
| 1882 | |
| 1883 // Threads_lock NOT held, java_thread not protected by lock | |
| 1884 // java_thread - pre-checked | |
| 1885 // java_thread - unchecked | |
| 1886 // depth - pre-checked as non-negative | |
| 1887 // value_ptr - pre-checked for NULL | |
| 1888 jvmtiError | |
| 1889 JvmtiEnv::GetLocalDouble(JavaThread* java_thread, jint depth, jint slot, jdouble* value_ptr) { | |
| 1890 // rm object is created to clean up the javaVFrame created in | |
| 1891 // doit_prologue(), but after doit() is finished with it. | |
| 1892 ResourceMark rm; | |
| 1893 | |
| 1894 VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE); | |
| 1895 VMThread::execute(&op); | |
| 1896 *value_ptr = op.value().d; | |
| 1897 return op.result(); | |
| 1898 } /* end GetLocalDouble */ | |
| 1899 | |
| 1900 | |
| 1901 // Threads_lock NOT held, java_thread not protected by lock | |
| 1902 // java_thread - pre-checked | |
| 1903 // java_thread - unchecked | |
| 1904 // depth - pre-checked as non-negative | |
| 1905 jvmtiError | |
| 1906 JvmtiEnv::SetLocalObject(JavaThread* java_thread, jint depth, jint slot, jobject value) { | |
| 1907 // rm object is created to clean up the javaVFrame created in | |
| 1908 // doit_prologue(), but after doit() is finished with it. | |
| 1909 ResourceMark rm; | |
| 1910 jvalue val; | |
| 1911 val.l = value; | |
| 1912 VM_GetOrSetLocal op(java_thread, depth, slot, T_OBJECT, val); | |
| 1913 VMThread::execute(&op); | |
| 1914 return op.result(); | |
| 1915 } /* end SetLocalObject */ | |
| 1916 | |
| 1917 | |
| 1918 // Threads_lock NOT held, java_thread not protected by lock | |
| 1919 // java_thread - pre-checked | |
| 1920 // java_thread - unchecked | |
| 1921 // depth - pre-checked as non-negative | |
| 1922 jvmtiError | |
| 1923 JvmtiEnv::SetLocalInt(JavaThread* java_thread, jint depth, jint slot, jint value) { | |
| 1924 // rm object is created to clean up the javaVFrame created in | |
| 1925 // doit_prologue(), but after doit() is finished with it. | |
| 1926 ResourceMark rm; | |
| 1927 jvalue val; | |
| 1928 val.i = value; | |
| 1929 VM_GetOrSetLocal op(java_thread, depth, slot, T_INT, val); | |
| 1930 VMThread::execute(&op); | |
| 1931 return op.result(); | |
| 1932 } /* end SetLocalInt */ | |
| 1933 | |
| 1934 | |
| 1935 // Threads_lock NOT held, java_thread not protected by lock | |
| 1936 // java_thread - pre-checked | |
| 1937 // java_thread - unchecked | |
| 1938 // depth - pre-checked as non-negative | |
| 1939 jvmtiError | |
| 1940 JvmtiEnv::SetLocalLong(JavaThread* java_thread, jint depth, jint slot, jlong value) { | |
| 1941 // rm object is created to clean up the javaVFrame created in | |
| 1942 // doit_prologue(), but after doit() is finished with it. | |
| 1943 ResourceMark rm; | |
| 1944 jvalue val; | |
| 1945 val.j = value; | |
| 1946 VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG, val); | |
| 1947 VMThread::execute(&op); | |
| 1948 return op.result(); | |
| 1949 } /* end SetLocalLong */ | |
| 1950 | |
| 1951 | |
| 1952 // Threads_lock NOT held, java_thread not protected by lock | |
| 1953 // java_thread - pre-checked | |
| 1954 // java_thread - unchecked | |
| 1955 // depth - pre-checked as non-negative | |
| 1956 jvmtiError | |
| 1957 JvmtiEnv::SetLocalFloat(JavaThread* java_thread, jint depth, jint slot, jfloat value) { | |
| 1958 // rm object is created to clean up the javaVFrame created in | |
| 1959 // doit_prologue(), but after doit() is finished with it. | |
| 1960 ResourceMark rm; | |
| 1961 jvalue val; | |
| 1962 val.f = value; | |
| 1963 VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT, val); | |
| 1964 VMThread::execute(&op); | |
| 1965 return op.result(); | |
| 1966 } /* end SetLocalFloat */ | |
| 1967 | |
| 1968 | |
| 1969 // Threads_lock NOT held, java_thread not protected by lock | |
| 1970 // java_thread - pre-checked | |
| 1971 // java_thread - unchecked | |
| 1972 // depth - pre-checked as non-negative | |
| 1973 jvmtiError | |
| 1974 JvmtiEnv::SetLocalDouble(JavaThread* java_thread, jint depth, jint slot, jdouble value) { | |
| 1975 // rm object is created to clean up the javaVFrame created in | |
| 1976 // doit_prologue(), but after doit() is finished with it. | |
| 1977 ResourceMark rm; | |
| 1978 jvalue val; | |
| 1979 val.d = value; | |
| 1980 VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE, val); | |
| 1981 VMThread::execute(&op); | |
| 1982 return op.result(); | |
| 1983 } /* end SetLocalDouble */ | |
| 1984 | |
| 1985 | |
| 1986 // | |
| 1987 // Breakpoint functions | |
| 1988 // | |
| 1989 | |
| 1990 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 1991 jvmtiError | |
| 1992 JvmtiEnv::SetBreakpoint(methodOop method_oop, jlocation location) { | |
| 1993 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 1994 if (location < 0) { // simple invalid location check first | |
| 1995 return JVMTI_ERROR_INVALID_LOCATION; | |
| 1996 } | |
| 1997 // verify that the breakpoint is not past the end of the method | |
| 1998 if (location >= (jlocation) method_oop->code_size()) { | |
| 1999 return JVMTI_ERROR_INVALID_LOCATION; | |
| 2000 } | |
| 2001 | |
| 2002 ResourceMark rm; | |
| 2003 JvmtiBreakpoint bp(method_oop, location); | |
| 2004 JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints(); | |
| 2005 if (jvmti_breakpoints.set(bp) == JVMTI_ERROR_DUPLICATE) | |
| 2006 return JVMTI_ERROR_DUPLICATE; | |
| 2007 | |
| 2008 if (TraceJVMTICalls) { | |
| 2009 jvmti_breakpoints.print(); | |
| 2010 } | |
| 2011 | |
| 2012 return JVMTI_ERROR_NONE; | |
| 2013 } /* end SetBreakpoint */ | |
| 2014 | |
| 2015 | |
| 2016 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2017 jvmtiError | |
| 2018 JvmtiEnv::ClearBreakpoint(methodOop method_oop, jlocation location) { | |
| 2019 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2020 | |
| 2021 if (location < 0) { // simple invalid location check first | |
| 2022 return JVMTI_ERROR_INVALID_LOCATION; | |
| 2023 } | |
| 2024 | |
| 2025 // verify that the breakpoint is not past the end of the method | |
| 2026 if (location >= (jlocation) method_oop->code_size()) { | |
| 2027 return JVMTI_ERROR_INVALID_LOCATION; | |
| 2028 } | |
| 2029 | |
| 2030 JvmtiBreakpoint bp(method_oop, location); | |
| 2031 | |
| 2032 JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints(); | |
| 2033 if (jvmti_breakpoints.clear(bp) == JVMTI_ERROR_NOT_FOUND) | |
| 2034 return JVMTI_ERROR_NOT_FOUND; | |
| 2035 | |
| 2036 if (TraceJVMTICalls) { | |
| 2037 jvmti_breakpoints.print(); | |
| 2038 } | |
| 2039 | |
| 2040 return JVMTI_ERROR_NONE; | |
| 2041 } /* end ClearBreakpoint */ | |
| 2042 | |
| 2043 | |
| 2044 // | |
| 2045 // Watched Field functions | |
| 2046 // | |
| 2047 | |
| 2048 jvmtiError | |
| 2049 JvmtiEnv::SetFieldAccessWatch(fieldDescriptor* fdesc_ptr) { | |
| 2050 // make sure we haven't set this watch before | |
| 2051 if (fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_DUPLICATE; | |
| 2052 fdesc_ptr->set_is_field_access_watched(true); | |
| 2053 | |
| 2054 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, true); | |
| 2055 | |
| 2056 return JVMTI_ERROR_NONE; | |
| 2057 } /* end SetFieldAccessWatch */ | |
| 2058 | |
| 2059 | |
| 2060 jvmtiError | |
| 2061 JvmtiEnv::ClearFieldAccessWatch(fieldDescriptor* fdesc_ptr) { | |
| 2062 // make sure we have a watch to clear | |
| 2063 if (!fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_NOT_FOUND; | |
| 2064 fdesc_ptr->set_is_field_access_watched(false); | |
| 2065 | |
| 2066 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, false); | |
| 2067 | |
| 2068 return JVMTI_ERROR_NONE; | |
| 2069 } /* end ClearFieldAccessWatch */ | |
| 2070 | |
| 2071 | |
| 2072 jvmtiError | |
| 2073 JvmtiEnv::SetFieldModificationWatch(fieldDescriptor* fdesc_ptr) { | |
| 2074 // make sure we haven't set this watch before | |
| 2075 if (fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_DUPLICATE; | |
| 2076 fdesc_ptr->set_is_field_modification_watched(true); | |
| 2077 | |
| 2078 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, true); | |
| 2079 | |
| 2080 return JVMTI_ERROR_NONE; | |
| 2081 } /* end SetFieldModificationWatch */ | |
| 2082 | |
| 2083 | |
| 2084 jvmtiError | |
| 2085 JvmtiEnv::ClearFieldModificationWatch(fieldDescriptor* fdesc_ptr) { | |
| 2086 // make sure we have a watch to clear | |
| 2087 if (!fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_NOT_FOUND; | |
| 2088 fdesc_ptr->set_is_field_modification_watched(false); | |
| 2089 | |
| 2090 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, false); | |
| 2091 | |
| 2092 return JVMTI_ERROR_NONE; | |
| 2093 } /* end ClearFieldModificationWatch */ | |
| 2094 | |
| 2095 // | |
| 2096 // Class functions | |
| 2097 // | |
| 2098 | |
| 2099 | |
| 2100 // k_mirror - may be primitive, this must be checked | |
| 2101 // signature_ptr - NULL is a valid value, must be checked | |
| 2102 // generic_ptr - NULL is a valid value, must be checked | |
| 2103 jvmtiError | |
| 2104 JvmtiEnv::GetClassSignature(oop k_mirror, char** signature_ptr, char** generic_ptr) { | |
| 2105 ResourceMark rm; | |
| 2106 bool isPrimitive = java_lang_Class::is_primitive(k_mirror); | |
| 2107 klassOop k = NULL; | |
| 2108 if (!isPrimitive) { | |
| 2109 k = java_lang_Class::as_klassOop(k_mirror); | |
| 2110 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
| 2111 } | |
| 2112 if (signature_ptr != NULL) { | |
| 2113 char* result = NULL; | |
| 2114 if (isPrimitive) { | |
| 2115 char tchar = type2char(java_lang_Class::primitive_type(k_mirror)); | |
| 2116 result = (char*) jvmtiMalloc(2); | |
| 2117 result[0] = tchar; | |
| 2118 result[1] = '\0'; | |
| 2119 } else { | |
| 2120 const char* class_sig = Klass::cast(k)->signature_name(); | |
| 2121 result = (char *) jvmtiMalloc(strlen(class_sig)+1); | |
| 2122 strcpy(result, class_sig); | |
| 2123 } | |
| 2124 *signature_ptr = result; | |
| 2125 } | |
| 2126 if (generic_ptr != NULL) { | |
| 2127 *generic_ptr = NULL; | |
| 2128 if (!isPrimitive && Klass::cast(k)->oop_is_instance()) { | |
|
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2129 Symbol* soo = instanceKlass::cast(k)->generic_signature(); |
| 0 | 2130 if (soo != NULL) { |
| 2131 const char *gen_sig = soo->as_C_string(); | |
| 2132 if (gen_sig != NULL) { | |
| 2133 char* gen_result; | |
| 2134 jvmtiError err = allocate(strlen(gen_sig) + 1, | |
| 2135 (unsigned char **)&gen_result); | |
| 2136 if (err != JVMTI_ERROR_NONE) { | |
| 2137 return err; | |
| 2138 } | |
| 2139 strcpy(gen_result, gen_sig); | |
| 2140 *generic_ptr = gen_result; | |
| 2141 } | |
| 2142 } | |
| 2143 } | |
| 2144 } | |
| 2145 return JVMTI_ERROR_NONE; | |
| 2146 } /* end GetClassSignature */ | |
| 2147 | |
| 2148 | |
| 2149 // k_mirror - may be primitive, this must be checked | |
| 2150 // status_ptr - pre-checked for NULL | |
| 2151 jvmtiError | |
| 2152 JvmtiEnv::GetClassStatus(oop k_mirror, jint* status_ptr) { | |
| 2153 jint result = 0; | |
| 2154 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2155 result |= JVMTI_CLASS_STATUS_PRIMITIVE; | |
| 2156 } else { | |
| 2157 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
| 2158 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
| 2159 result = Klass::cast(k)->jvmti_class_status(); | |
| 2160 } | |
| 2161 *status_ptr = result; | |
| 2162 | |
| 2163 return JVMTI_ERROR_NONE; | |
| 2164 } /* end GetClassStatus */ | |
| 2165 | |
| 2166 | |
| 2167 // k_mirror - may be primitive, this must be checked | |
| 2168 // source_name_ptr - pre-checked for NULL | |
| 2169 jvmtiError | |
| 2170 JvmtiEnv::GetSourceFileName(oop k_mirror, char** source_name_ptr) { | |
| 2171 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2172 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2173 } | |
| 2174 klassOop k_klass = java_lang_Class::as_klassOop(k_mirror); | |
| 2175 NULL_CHECK(k_klass, JVMTI_ERROR_INVALID_CLASS); | |
| 2176 | |
| 2177 if (!Klass::cast(k_klass)->oop_is_instance()) { | |
| 2178 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2179 } | |
| 2180 | |
|
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|
2181 Symbol* sfnOop = instanceKlass::cast(k_klass)->source_file_name(); |
| 0 | 2182 NULL_CHECK(sfnOop, JVMTI_ERROR_ABSENT_INFORMATION); |
| 2183 { | |
| 2184 JavaThread* current_thread = JavaThread::current(); | |
| 2185 ResourceMark rm(current_thread); | |
| 2186 const char* sfncp = (const char*) sfnOop->as_C_string(); | |
| 2187 *source_name_ptr = (char *) jvmtiMalloc(strlen(sfncp)+1); | |
| 2188 strcpy(*source_name_ptr, sfncp); | |
| 2189 } | |
| 2190 | |
| 2191 return JVMTI_ERROR_NONE; | |
| 2192 } /* end GetSourceFileName */ | |
| 2193 | |
| 2194 | |
| 2195 // k_mirror - may be primitive, this must be checked | |
| 2196 // modifiers_ptr - pre-checked for NULL | |
| 2197 jvmtiError | |
| 2198 JvmtiEnv::GetClassModifiers(oop k_mirror, jint* modifiers_ptr) { | |
| 2199 JavaThread* current_thread = JavaThread::current(); | |
| 2200 jint result = 0; | |
| 2201 if (!java_lang_Class::is_primitive(k_mirror)) { | |
| 2202 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
| 2203 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
| 2204 assert((Klass::cast(k)->oop_is_instance() || Klass::cast(k)->oop_is_array()), "should be an instance or an array klass"); | |
| 2205 result = Klass::cast(k)->compute_modifier_flags(current_thread); | |
| 2206 JavaThread* THREAD = current_thread; // pass to macros | |
| 2207 if (HAS_PENDING_EXCEPTION) { | |
| 2208 CLEAR_PENDING_EXCEPTION; | |
| 2209 return JVMTI_ERROR_INTERNAL; | |
| 2210 }; | |
| 2211 | |
| 2212 // Reset the deleted ACC_SUPER bit ( deleted in compute_modifier_flags()). | |
| 2213 if(Klass::cast(k)->is_super()) { | |
| 2214 result |= JVM_ACC_SUPER; | |
| 2215 } | |
| 2216 } else { | |
| 2217 result = (JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC); | |
| 2218 } | |
| 2219 *modifiers_ptr = result; | |
| 2220 | |
| 2221 return JVMTI_ERROR_NONE; | |
| 2222 } /* end GetClassModifiers */ | |
| 2223 | |
| 2224 | |
| 2225 // k_mirror - may be primitive, this must be checked | |
| 2226 // method_count_ptr - pre-checked for NULL | |
| 2227 // methods_ptr - pre-checked for NULL | |
| 2228 jvmtiError | |
| 2229 JvmtiEnv::GetClassMethods(oop k_mirror, jint* method_count_ptr, jmethodID** methods_ptr) { | |
| 2230 JavaThread* current_thread = JavaThread::current(); | |
| 2231 HandleMark hm(current_thread); | |
| 2232 | |
| 2233 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2234 *method_count_ptr = 0; | |
| 2235 *methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID)); | |
| 2236 return JVMTI_ERROR_NONE; | |
| 2237 } | |
| 2238 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
| 2239 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
| 2240 | |
| 2241 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
| 2242 if (!(Klass::cast(k)->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) { | |
| 2243 return JVMTI_ERROR_CLASS_NOT_PREPARED; | |
| 2244 } | |
| 2245 | |
| 2246 if (!Klass::cast(k)->oop_is_instance()) { | |
| 2247 *method_count_ptr = 0; | |
| 2248 *methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID)); | |
| 2249 return JVMTI_ERROR_NONE; | |
| 2250 } | |
| 2251 instanceKlassHandle instanceK_h(current_thread, k); | |
| 2252 // Allocate the result and fill it in | |
| 2253 int result_length = instanceK_h->methods()->length(); | |
| 2254 jmethodID* result_list = (jmethodID*)jvmtiMalloc(result_length * sizeof(jmethodID)); | |
| 2255 int index; | |
| 2256 if (JvmtiExport::can_maintain_original_method_order()) { | |
| 2257 // Use the original method ordering indices stored in the class, so we can emit | |
| 2258 // jmethodIDs in the order they appeared in the class file | |
| 2259 for (index = 0; index < result_length; index++) { | |
| 2260 methodOop m = methodOop(instanceK_h->methods()->obj_at(index)); | |
| 2261 int original_index = instanceK_h->method_ordering()->int_at(index); | |
| 2262 assert(original_index >= 0 && original_index < result_length, "invalid original method index"); | |
| 2263 jmethodID id = m->jmethod_id(); | |
| 2264 result_list[original_index] = id; | |
| 2265 } | |
| 2266 } else { | |
| 2267 // otherwise just copy in any order | |
| 2268 for (index = 0; index < result_length; index++) { | |
| 2269 methodOop m = methodOop(instanceK_h->methods()->obj_at(index)); | |
| 2270 jmethodID id = m->jmethod_id(); | |
| 2271 result_list[index] = id; | |
| 2272 } | |
| 2273 } | |
| 2274 // Fill in return value. | |
| 2275 *method_count_ptr = result_length; | |
| 2276 *methods_ptr = result_list; | |
| 2277 | |
| 2278 return JVMTI_ERROR_NONE; | |
| 2279 } /* end GetClassMethods */ | |
| 2280 | |
| 2281 | |
| 2282 // k_mirror - may be primitive, this must be checked | |
| 2283 // field_count_ptr - pre-checked for NULL | |
| 2284 // fields_ptr - pre-checked for NULL | |
| 2285 jvmtiError | |
| 2286 JvmtiEnv::GetClassFields(oop k_mirror, jint* field_count_ptr, jfieldID** fields_ptr) { | |
| 2287 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2288 *field_count_ptr = 0; | |
| 2289 *fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID)); | |
| 2290 return JVMTI_ERROR_NONE; | |
| 2291 } | |
| 2292 JavaThread* current_thread = JavaThread::current(); | |
| 2293 HandleMark hm(current_thread); | |
| 2294 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
| 2295 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
| 2296 | |
| 2297 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
| 2298 if (!(Klass::cast(k)->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) { | |
| 2299 return JVMTI_ERROR_CLASS_NOT_PREPARED; | |
| 2300 } | |
| 2301 | |
| 2302 if (!Klass::cast(k)->oop_is_instance()) { | |
| 2303 *field_count_ptr = 0; | |
| 2304 *fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID)); | |
| 2305 return JVMTI_ERROR_NONE; | |
| 2306 } | |
| 2307 | |
| 2308 | |
| 2309 instanceKlassHandle instanceK_h(current_thread, k); | |
| 2310 | |
| 2311 int result_count = 0; | |
| 2312 // First, count the fields. | |
| 2313 FilteredFieldStream flds(instanceK_h, true, true); | |
| 2314 result_count = flds.field_count(); | |
| 2315 | |
| 2316 // Allocate the result and fill it in | |
| 2317 jfieldID* result_list = (jfieldID*) jvmtiMalloc(result_count * sizeof(jfieldID)); | |
| 2318 // The JVMTI spec requires fields in the order they occur in the class file, | |
| 2319 // this is the reverse order of what FieldStream hands out. | |
| 2320 int id_index = (result_count - 1); | |
| 2321 | |
| 2322 for (FilteredFieldStream src_st(instanceK_h, true, true); !src_st.eos(); src_st.next()) { | |
| 2323 result_list[id_index--] = jfieldIDWorkaround::to_jfieldID( | |
| 2324 instanceK_h, src_st.offset(), | |
| 2325 src_st.access_flags().is_static()); | |
| 2326 } | |
| 2327 assert(id_index == -1, "just checking"); | |
| 2328 // Fill in the results | |
| 2329 *field_count_ptr = result_count; | |
| 2330 *fields_ptr = result_list; | |
| 2331 | |
| 2332 return JVMTI_ERROR_NONE; | |
| 2333 } /* end GetClassFields */ | |
| 2334 | |
| 2335 | |
| 2336 // k_mirror - may be primitive, this must be checked | |
| 2337 // interface_count_ptr - pre-checked for NULL | |
| 2338 // interfaces_ptr - pre-checked for NULL | |
| 2339 jvmtiError | |
| 2340 JvmtiEnv::GetImplementedInterfaces(oop k_mirror, jint* interface_count_ptr, jclass** interfaces_ptr) { | |
| 2341 { | |
| 2342 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2343 *interface_count_ptr = 0; | |
| 2344 *interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass)); | |
| 2345 return JVMTI_ERROR_NONE; | |
| 2346 } | |
| 2347 JavaThread* current_thread = JavaThread::current(); | |
| 2348 HandleMark hm(current_thread); | |
| 2349 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
| 2350 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
| 2351 | |
| 2352 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
| 2353 if (!(Klass::cast(k)->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) | |
| 2354 return JVMTI_ERROR_CLASS_NOT_PREPARED; | |
| 2355 | |
| 2356 if (!Klass::cast(k)->oop_is_instance()) { | |
| 2357 *interface_count_ptr = 0; | |
| 2358 *interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass)); | |
| 2359 return JVMTI_ERROR_NONE; | |
| 2360 } | |
| 2361 | |
| 2362 objArrayHandle interface_list(current_thread, instanceKlass::cast(k)->local_interfaces()); | |
| 2363 const int result_length = (interface_list.is_null() ? 0 : interface_list->length()); | |
| 2364 jclass* result_list = (jclass*) jvmtiMalloc(result_length * sizeof(jclass)); | |
| 2365 for (int i_index = 0; i_index < result_length; i_index += 1) { | |
| 2366 oop oop_at = interface_list->obj_at(i_index); | |
| 2367 assert(oop_at->is_klass(), "interfaces must be klassOops"); | |
| 2368 klassOop klassOop_at = klassOop(oop_at); // ???: is there a better way? | |
| 2369 assert(Klass::cast(klassOop_at)->is_interface(), "interfaces must be interfaces"); | |
| 2370 oop mirror_at = Klass::cast(klassOop_at)->java_mirror(); | |
| 2371 Handle handle_at = Handle(current_thread, mirror_at); | |
| 2372 result_list[i_index] = (jclass) jni_reference(handle_at); | |
| 2373 } | |
| 2374 *interface_count_ptr = result_length; | |
| 2375 *interfaces_ptr = result_list; | |
| 2376 } | |
| 2377 | |
| 2378 return JVMTI_ERROR_NONE; | |
| 2379 } /* end GetImplementedInterfaces */ | |
| 2380 | |
| 2381 | |
| 2382 // k_mirror - may be primitive, this must be checked | |
| 2383 // minor_version_ptr - pre-checked for NULL | |
| 2384 // major_version_ptr - pre-checked for NULL | |
| 2385 jvmtiError | |
| 2386 JvmtiEnv::GetClassVersionNumbers(oop k_mirror, jint* minor_version_ptr, jint* major_version_ptr) { | |
| 2387 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2388 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2389 } | |
| 2390 klassOop k_oop = java_lang_Class::as_klassOop(k_mirror); | |
| 2391 Thread *thread = Thread::current(); | |
| 2392 HandleMark hm(thread); | |
| 2393 KlassHandle klass(thread, k_oop); | |
| 2394 | |
| 2395 jint status = klass->jvmti_class_status(); | |
| 2396 if (status & (JVMTI_CLASS_STATUS_ERROR)) { | |
| 2397 return JVMTI_ERROR_INVALID_CLASS; | |
| 2398 } | |
| 2399 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { | |
| 2400 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2401 } | |
| 2402 | |
| 2403 instanceKlassHandle ik(thread, k_oop); | |
| 2404 *minor_version_ptr = ik->minor_version(); | |
| 2405 *major_version_ptr = ik->major_version(); | |
| 2406 | |
| 2407 return JVMTI_ERROR_NONE; | |
| 2408 } /* end GetClassVersionNumbers */ | |
| 2409 | |
| 2410 | |
| 2411 // k_mirror - may be primitive, this must be checked | |
| 2412 // constant_pool_count_ptr - pre-checked for NULL | |
| 2413 // constant_pool_byte_count_ptr - pre-checked for NULL | |
| 2414 // constant_pool_bytes_ptr - pre-checked for NULL | |
| 2415 jvmtiError | |
| 2416 JvmtiEnv::GetConstantPool(oop k_mirror, jint* constant_pool_count_ptr, jint* constant_pool_byte_count_ptr, unsigned char** constant_pool_bytes_ptr) { | |
| 2417 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2418 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2419 } | |
| 2420 | |
| 2421 klassOop k_oop = java_lang_Class::as_klassOop(k_mirror); | |
| 2422 Thread *thread = Thread::current(); | |
| 2423 HandleMark hm(thread); | |
| 2424 ResourceMark rm(thread); | |
| 2425 KlassHandle klass(thread, k_oop); | |
| 2426 | |
| 2427 jint status = klass->jvmti_class_status(); | |
| 2428 if (status & (JVMTI_CLASS_STATUS_ERROR)) { | |
| 2429 return JVMTI_ERROR_INVALID_CLASS; | |
| 2430 } | |
| 2431 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { | |
| 2432 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2433 } | |
| 2434 | |
| 2435 instanceKlassHandle ikh(thread, k_oop); | |
| 2436 constantPoolHandle constants(thread, ikh->constants()); | |
| 2437 ObjectLocker ol(constants, thread); // lock constant pool while we query it | |
| 2438 | |
| 2439 JvmtiConstantPoolReconstituter reconstituter(ikh); | |
| 2440 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
| 2441 return reconstituter.get_error(); | |
| 2442 } | |
| 2443 | |
| 2444 unsigned char *cpool_bytes; | |
| 2445 int cpool_size = reconstituter.cpool_size(); | |
| 2446 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
| 2447 return reconstituter.get_error(); | |
| 2448 } | |
| 2449 jvmtiError res = allocate(cpool_size, &cpool_bytes); | |
| 2450 if (res != JVMTI_ERROR_NONE) { | |
| 2451 return res; | |
| 2452 } | |
| 2453 reconstituter.copy_cpool_bytes(cpool_bytes); | |
| 2454 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
| 2455 return reconstituter.get_error(); | |
| 2456 } | |
| 2457 | |
| 2458 *constant_pool_count_ptr = constants->length(); | |
| 2459 *constant_pool_byte_count_ptr = cpool_size; | |
| 2460 *constant_pool_bytes_ptr = cpool_bytes; | |
| 2461 | |
| 2462 return JVMTI_ERROR_NONE; | |
| 2463 } /* end GetConstantPool */ | |
| 2464 | |
| 2465 | |
| 2466 // k_mirror - may be primitive, this must be checked | |
| 2467 // is_interface_ptr - pre-checked for NULL | |
| 2468 jvmtiError | |
| 2469 JvmtiEnv::IsInterface(oop k_mirror, jboolean* is_interface_ptr) { | |
| 2470 { | |
| 2471 bool result = false; | |
| 2472 if (!java_lang_Class::is_primitive(k_mirror)) { | |
| 2473 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
| 2474 if (k != NULL && Klass::cast(k)->is_interface()) { | |
| 2475 result = true; | |
| 2476 } | |
| 2477 } | |
| 2478 *is_interface_ptr = result; | |
| 2479 } | |
| 2480 | |
| 2481 return JVMTI_ERROR_NONE; | |
| 2482 } /* end IsInterface */ | |
| 2483 | |
| 2484 | |
| 2485 // k_mirror - may be primitive, this must be checked | |
| 2486 // is_array_class_ptr - pre-checked for NULL | |
| 2487 jvmtiError | |
| 2488 JvmtiEnv::IsArrayClass(oop k_mirror, jboolean* is_array_class_ptr) { | |
| 2489 { | |
| 2490 bool result = false; | |
| 2491 if (!java_lang_Class::is_primitive(k_mirror)) { | |
| 2492 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
| 2493 if (k != NULL && Klass::cast(k)->oop_is_array()) { | |
| 2494 result = true; | |
| 2495 } | |
| 2496 } | |
| 2497 *is_array_class_ptr = result; | |
| 2498 } | |
| 2499 | |
| 2500 return JVMTI_ERROR_NONE; | |
| 2501 } /* end IsArrayClass */ | |
| 2502 | |
| 2503 | |
| 2504 // k_mirror - may be primitive, this must be checked | |
| 2505 // classloader_ptr - pre-checked for NULL | |
| 2506 jvmtiError | |
| 2507 JvmtiEnv::GetClassLoader(oop k_mirror, jobject* classloader_ptr) { | |
| 2508 { | |
| 2509 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2510 *classloader_ptr = (jclass) jni_reference(Handle()); | |
| 2511 return JVMTI_ERROR_NONE; | |
| 2512 } | |
| 2513 JavaThread* current_thread = JavaThread::current(); | |
| 2514 HandleMark hm(current_thread); | |
| 2515 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
| 2516 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
| 2517 | |
| 2518 oop result_oop = Klass::cast(k)->class_loader(); | |
| 2519 if (result_oop == NULL) { | |
| 2520 *classloader_ptr = (jclass) jni_reference(Handle()); | |
| 2521 return JVMTI_ERROR_NONE; | |
| 2522 } | |
| 2523 Handle result_handle = Handle(current_thread, result_oop); | |
| 2524 jclass result_jnihandle = (jclass) jni_reference(result_handle); | |
| 2525 *classloader_ptr = result_jnihandle; | |
| 2526 } | |
| 2527 return JVMTI_ERROR_NONE; | |
| 2528 } /* end GetClassLoader */ | |
| 2529 | |
| 2530 | |
| 2531 // k_mirror - may be primitive, this must be checked | |
| 2532 // source_debug_extension_ptr - pre-checked for NULL | |
| 2533 jvmtiError | |
| 2534 JvmtiEnv::GetSourceDebugExtension(oop k_mirror, char** source_debug_extension_ptr) { | |
| 2535 { | |
| 2536 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2537 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2538 } | |
| 2539 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
| 2540 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
| 2541 if (!Klass::cast(k)->oop_is_instance()) { | |
| 2542 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2543 } | |
|
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|
2544 Symbol* sdeOop = instanceKlass::cast(k)->source_debug_extension(); |
| 0 | 2545 NULL_CHECK(sdeOop, JVMTI_ERROR_ABSENT_INFORMATION); |
| 2546 | |
| 2547 { | |
| 2548 JavaThread* current_thread = JavaThread::current(); | |
| 2549 ResourceMark rm(current_thread); | |
| 2550 const char* sdecp = (const char*) sdeOop->as_C_string(); | |
| 2551 *source_debug_extension_ptr = (char *) jvmtiMalloc(strlen(sdecp)+1); | |
| 2552 strcpy(*source_debug_extension_ptr, sdecp); | |
| 2553 } | |
| 2554 } | |
| 2555 | |
| 2556 return JVMTI_ERROR_NONE; | |
| 2557 } /* end GetSourceDebugExtension */ | |
| 2558 | |
| 2559 // | |
| 2560 // Object functions | |
| 2561 // | |
| 2562 | |
| 2563 // hash_code_ptr - pre-checked for NULL | |
| 2564 jvmtiError | |
| 2565 JvmtiEnv::GetObjectHashCode(jobject object, jint* hash_code_ptr) { | |
| 2566 oop mirror = JNIHandles::resolve_external_guard(object); | |
| 2567 NULL_CHECK(mirror, JVMTI_ERROR_INVALID_OBJECT); | |
| 2568 NULL_CHECK(hash_code_ptr, JVMTI_ERROR_NULL_POINTER); | |
| 2569 | |
| 2570 { | |
| 2571 jint result = (jint) mirror->identity_hash(); | |
| 2572 *hash_code_ptr = result; | |
| 2573 } | |
| 2574 return JVMTI_ERROR_NONE; | |
| 2575 } /* end GetObjectHashCode */ | |
| 2576 | |
| 2577 | |
| 2578 // info_ptr - pre-checked for NULL | |
| 2579 jvmtiError | |
| 2580 JvmtiEnv::GetObjectMonitorUsage(jobject object, jvmtiMonitorUsage* info_ptr) { | |
| 2581 JavaThread* calling_thread = JavaThread::current(); | |
| 2582 jvmtiError err = get_object_monitor_usage(calling_thread, object, info_ptr); | |
| 2583 if (err == JVMTI_ERROR_THREAD_NOT_SUSPENDED) { | |
| 2584 // Some of the critical threads were not suspended. go to a safepoint and try again | |
| 2585 VM_GetObjectMonitorUsage op(this, calling_thread, object, info_ptr); | |
| 2586 VMThread::execute(&op); | |
| 2587 err = op.result(); | |
| 2588 } | |
| 2589 return err; | |
| 2590 } /* end GetObjectMonitorUsage */ | |
| 2591 | |
| 2592 | |
| 2593 // | |
| 2594 // Field functions | |
| 2595 // | |
| 2596 | |
| 2597 // name_ptr - NULL is a valid value, must be checked | |
| 2598 // signature_ptr - NULL is a valid value, must be checked | |
| 2599 // generic_ptr - NULL is a valid value, must be checked | |
| 2600 jvmtiError | |
| 2601 JvmtiEnv::GetFieldName(fieldDescriptor* fdesc_ptr, char** name_ptr, char** signature_ptr, char** generic_ptr) { | |
| 2602 JavaThread* current_thread = JavaThread::current(); | |
| 2603 ResourceMark rm(current_thread); | |
| 2604 if (name_ptr == NULL) { | |
| 2605 // just don't return the name | |
| 2606 } else { | |
| 2607 const char* fieldName = fdesc_ptr->name()->as_C_string(); | |
| 2608 *name_ptr = (char*) jvmtiMalloc(strlen(fieldName) + 1); | |
| 2609 if (*name_ptr == NULL) | |
| 2610 return JVMTI_ERROR_OUT_OF_MEMORY; | |
| 2611 strcpy(*name_ptr, fieldName); | |
| 2612 } | |
| 2613 if (signature_ptr== NULL) { | |
| 2614 // just don't return the signature | |
| 2615 } else { | |
| 2616 const char* fieldSignature = fdesc_ptr->signature()->as_C_string(); | |
| 2617 *signature_ptr = (char*) jvmtiMalloc(strlen(fieldSignature) + 1); | |
| 2618 if (*signature_ptr == NULL) | |
| 2619 return JVMTI_ERROR_OUT_OF_MEMORY; | |
| 2620 strcpy(*signature_ptr, fieldSignature); | |
| 2621 } | |
| 2622 if (generic_ptr != NULL) { | |
| 2623 *generic_ptr = NULL; | |
|
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|
2624 Symbol* soop = fdesc_ptr->generic_signature(); |
| 0 | 2625 if (soop != NULL) { |
| 2626 const char* gen_sig = soop->as_C_string(); | |
| 2627 if (gen_sig != NULL) { | |
| 2628 jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr); | |
| 2629 if (err != JVMTI_ERROR_NONE) { | |
| 2630 return err; | |
| 2631 } | |
| 2632 strcpy(*generic_ptr, gen_sig); | |
| 2633 } | |
| 2634 } | |
| 2635 } | |
| 2636 return JVMTI_ERROR_NONE; | |
| 2637 } /* end GetFieldName */ | |
| 2638 | |
| 2639 | |
| 2640 // declaring_class_ptr - pre-checked for NULL | |
| 2641 jvmtiError | |
| 2642 JvmtiEnv::GetFieldDeclaringClass(fieldDescriptor* fdesc_ptr, jclass* declaring_class_ptr) { | |
| 2643 | |
| 2644 *declaring_class_ptr = get_jni_class_non_null(fdesc_ptr->field_holder()); | |
| 2645 return JVMTI_ERROR_NONE; | |
| 2646 } /* end GetFieldDeclaringClass */ | |
| 2647 | |
| 2648 | |
| 2649 // modifiers_ptr - pre-checked for NULL | |
| 2650 jvmtiError | |
| 2651 JvmtiEnv::GetFieldModifiers(fieldDescriptor* fdesc_ptr, jint* modifiers_ptr) { | |
| 2652 | |
| 2653 AccessFlags resultFlags = fdesc_ptr->access_flags(); | |
| 2654 jint result = resultFlags.as_int(); | |
| 2655 *modifiers_ptr = result; | |
| 2656 | |
| 2657 return JVMTI_ERROR_NONE; | |
| 2658 } /* end GetFieldModifiers */ | |
| 2659 | |
| 2660 | |
| 2661 // is_synthetic_ptr - pre-checked for NULL | |
| 2662 jvmtiError | |
| 2663 JvmtiEnv::IsFieldSynthetic(fieldDescriptor* fdesc_ptr, jboolean* is_synthetic_ptr) { | |
| 2664 *is_synthetic_ptr = fdesc_ptr->is_synthetic(); | |
| 2665 return JVMTI_ERROR_NONE; | |
| 2666 } /* end IsFieldSynthetic */ | |
| 2667 | |
| 2668 | |
| 2669 // | |
| 2670 // Method functions | |
| 2671 // | |
| 2672 | |
| 2673 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2674 // name_ptr - NULL is a valid value, must be checked | |
| 2675 // signature_ptr - NULL is a valid value, must be checked | |
| 2676 // generic_ptr - NULL is a valid value, must be checked | |
| 2677 jvmtiError | |
| 2678 JvmtiEnv::GetMethodName(methodOop method_oop, char** name_ptr, char** signature_ptr, char** generic_ptr) { | |
| 2679 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2680 JavaThread* current_thread = JavaThread::current(); | |
| 2681 | |
| 2682 ResourceMark rm(current_thread); // get the utf8 name and signature | |
| 2683 if (name_ptr == NULL) { | |
| 2684 // just don't return the name | |
| 2685 } else { | |
| 2686 const char* utf8_name = (const char *) method_oop->name()->as_utf8(); | |
| 2687 *name_ptr = (char *) jvmtiMalloc(strlen(utf8_name)+1); | |
| 2688 strcpy(*name_ptr, utf8_name); | |
| 2689 } | |
| 2690 if (signature_ptr == NULL) { | |
| 2691 // just don't return the signature | |
| 2692 } else { | |
| 2693 const char* utf8_signature = (const char *) method_oop->signature()->as_utf8(); | |
| 2694 *signature_ptr = (char *) jvmtiMalloc(strlen(utf8_signature) + 1); | |
| 2695 strcpy(*signature_ptr, utf8_signature); | |
| 2696 } | |
| 2697 | |
| 2698 if (generic_ptr != NULL) { | |
| 2699 *generic_ptr = NULL; | |
|
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|
2700 Symbol* soop = method_oop->generic_signature(); |
| 0 | 2701 if (soop != NULL) { |
| 2702 const char* gen_sig = soop->as_C_string(); | |
| 2703 if (gen_sig != NULL) { | |
| 2704 jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr); | |
| 2705 if (err != JVMTI_ERROR_NONE) { | |
| 2706 return err; | |
| 2707 } | |
| 2708 strcpy(*generic_ptr, gen_sig); | |
| 2709 } | |
| 2710 } | |
| 2711 } | |
| 2712 return JVMTI_ERROR_NONE; | |
| 2713 } /* end GetMethodName */ | |
| 2714 | |
| 2715 | |
| 2716 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2717 // declaring_class_ptr - pre-checked for NULL | |
| 2718 jvmtiError | |
| 2719 JvmtiEnv::GetMethodDeclaringClass(methodOop method_oop, jclass* declaring_class_ptr) { | |
| 2720 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2721 (*declaring_class_ptr) = get_jni_class_non_null(method_oop->method_holder()); | |
| 2722 return JVMTI_ERROR_NONE; | |
| 2723 } /* end GetMethodDeclaringClass */ | |
| 2724 | |
| 2725 | |
| 2726 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2727 // modifiers_ptr - pre-checked for NULL | |
| 2728 jvmtiError | |
| 2729 JvmtiEnv::GetMethodModifiers(methodOop method_oop, jint* modifiers_ptr) { | |
| 2730 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2731 (*modifiers_ptr) = method_oop->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 2732 return JVMTI_ERROR_NONE; | |
| 2733 } /* end GetMethodModifiers */ | |
| 2734 | |
| 2735 | |
| 2736 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2737 // max_ptr - pre-checked for NULL | |
| 2738 jvmtiError | |
| 2739 JvmtiEnv::GetMaxLocals(methodOop method_oop, jint* max_ptr) { | |
| 2740 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2741 // get max stack | |
| 2742 (*max_ptr) = method_oop->max_locals(); | |
| 2743 return JVMTI_ERROR_NONE; | |
| 2744 } /* end GetMaxLocals */ | |
| 2745 | |
| 2746 | |
| 2747 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2748 // size_ptr - pre-checked for NULL | |
| 2749 jvmtiError | |
| 2750 JvmtiEnv::GetArgumentsSize(methodOop method_oop, jint* size_ptr) { | |
| 2751 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2752 // get size of arguments | |
| 2753 | |
| 2754 (*size_ptr) = method_oop->size_of_parameters(); | |
| 2755 return JVMTI_ERROR_NONE; | |
| 2756 } /* end GetArgumentsSize */ | |
| 2757 | |
| 2758 | |
| 2759 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2760 // entry_count_ptr - pre-checked for NULL | |
| 2761 // table_ptr - pre-checked for NULL | |
| 2762 jvmtiError | |
| 2763 JvmtiEnv::GetLineNumberTable(methodOop method_oop, jint* entry_count_ptr, jvmtiLineNumberEntry** table_ptr) { | |
| 2764 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2765 if (!method_oop->has_linenumber_table()) { | |
| 2766 return (JVMTI_ERROR_ABSENT_INFORMATION); | |
| 2767 } | |
| 2768 | |
| 2769 // The line number table is compressed so we don't know how big it is until decompressed. | |
| 2770 // Decompression is really fast so we just do it twice. | |
| 2771 | |
| 2772 // Compute size of table | |
| 2773 jint num_entries = 0; | |
| 2774 CompressedLineNumberReadStream stream(method_oop->compressed_linenumber_table()); | |
| 2775 while (stream.read_pair()) { | |
| 2776 num_entries++; | |
| 2777 } | |
| 2778 jvmtiLineNumberEntry *jvmti_table = | |
| 2779 (jvmtiLineNumberEntry *)jvmtiMalloc(num_entries * (sizeof(jvmtiLineNumberEntry))); | |
| 2780 | |
| 2781 // Fill jvmti table | |
| 2782 if (num_entries > 0) { | |
| 2783 int index = 0; | |
| 2784 CompressedLineNumberReadStream stream(method_oop->compressed_linenumber_table()); | |
| 2785 while (stream.read_pair()) { | |
| 2786 jvmti_table[index].start_location = (jlocation) stream.bci(); | |
| 2787 jvmti_table[index].line_number = (jint) stream.line(); | |
| 2788 index++; | |
| 2789 } | |
| 2790 assert(index == num_entries, "sanity check"); | |
| 2791 } | |
| 2792 | |
| 2793 // Set up results | |
| 2794 (*entry_count_ptr) = num_entries; | |
| 2795 (*table_ptr) = jvmti_table; | |
| 2796 | |
| 2797 return JVMTI_ERROR_NONE; | |
| 2798 } /* end GetLineNumberTable */ | |
| 2799 | |
| 2800 | |
| 2801 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2802 // start_location_ptr - pre-checked for NULL | |
| 2803 // end_location_ptr - pre-checked for NULL | |
| 2804 jvmtiError | |
| 2805 JvmtiEnv::GetMethodLocation(methodOop method_oop, jlocation* start_location_ptr, jlocation* end_location_ptr) { | |
| 2806 | |
| 2807 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2808 // get start and end location | |
| 2809 (*end_location_ptr) = (jlocation) (method_oop->code_size() - 1); | |
| 2810 if (method_oop->code_size() == 0) { | |
| 2811 // there is no code so there is no start location | |
| 2812 (*start_location_ptr) = (jlocation)(-1); | |
| 2813 } else { | |
| 2814 (*start_location_ptr) = (jlocation)(0); | |
| 2815 } | |
| 2816 | |
| 2817 return JVMTI_ERROR_NONE; | |
| 2818 } /* end GetMethodLocation */ | |
| 2819 | |
| 2820 | |
| 2821 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2822 // entry_count_ptr - pre-checked for NULL | |
| 2823 // table_ptr - pre-checked for NULL | |
| 2824 jvmtiError | |
| 2825 JvmtiEnv::GetLocalVariableTable(methodOop method_oop, jint* entry_count_ptr, jvmtiLocalVariableEntry** table_ptr) { | |
| 2826 | |
| 2827 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2828 JavaThread* current_thread = JavaThread::current(); | |
| 2829 | |
| 2830 // does the klass have any local variable information? | |
| 2831 instanceKlass* ik = instanceKlass::cast(method_oop->method_holder()); | |
| 2832 if (!ik->access_flags().has_localvariable_table()) { | |
| 2833 return (JVMTI_ERROR_ABSENT_INFORMATION); | |
| 2834 } | |
| 2835 | |
| 2836 constantPoolOop constants = method_oop->constants(); | |
| 2837 NULL_CHECK(constants, JVMTI_ERROR_ABSENT_INFORMATION); | |
| 2838 | |
| 2839 // in the vm localvariable table representation, 6 consecutive elements in the table | |
| 2840 // represent a 6-tuple of shorts | |
| 2841 // [start_pc, length, name_index, descriptor_index, signature_index, index] | |
| 2842 jint num_entries = method_oop->localvariable_table_length(); | |
| 2843 jvmtiLocalVariableEntry *jvmti_table = (jvmtiLocalVariableEntry *) | |
| 2844 jvmtiMalloc(num_entries * (sizeof(jvmtiLocalVariableEntry))); | |
| 2845 | |
| 2846 if (num_entries > 0) { | |
| 2847 LocalVariableTableElement* table = method_oop->localvariable_table_start(); | |
| 2848 for (int i = 0; i < num_entries; i++) { | |
| 2849 // get the 5 tuple information from the vm table | |
| 2850 jlocation start_location = (jlocation) table[i].start_bci; | |
| 2851 jint length = (jint) table[i].length; | |
| 2852 int name_index = (int) table[i].name_cp_index; | |
| 2853 int signature_index = (int) table[i].descriptor_cp_index; | |
| 2854 int generic_signature_index = (int) table[i].signature_cp_index; | |
| 2855 jint slot = (jint) table[i].slot; | |
| 2856 | |
| 2857 // get utf8 name and signature | |
| 2858 char *name_buf = NULL; | |
| 2859 char *sig_buf = NULL; | |
| 2860 char *gen_sig_buf = NULL; | |
| 2861 { | |
| 2862 ResourceMark rm(current_thread); | |
| 2863 | |
| 2864 const char *utf8_name = (const char *) constants->symbol_at(name_index)->as_utf8(); | |
| 2865 name_buf = (char *) jvmtiMalloc(strlen(utf8_name)+1); | |
| 2866 strcpy(name_buf, utf8_name); | |
| 2867 | |
| 2868 const char *utf8_signature = (const char *) constants->symbol_at(signature_index)->as_utf8(); | |
| 2869 sig_buf = (char *) jvmtiMalloc(strlen(utf8_signature)+1); | |
| 2870 strcpy(sig_buf, utf8_signature); | |
| 2871 | |
| 2872 if (generic_signature_index > 0) { | |
| 2873 const char *utf8_gen_sign = (const char *) | |
| 2874 constants->symbol_at(generic_signature_index)->as_utf8(); | |
| 2875 gen_sig_buf = (char *) jvmtiMalloc(strlen(utf8_gen_sign)+1); | |
| 2876 strcpy(gen_sig_buf, utf8_gen_sign); | |
| 2877 } | |
| 2878 } | |
| 2879 | |
| 2880 // fill in the jvmti local variable table | |
| 2881 jvmti_table[i].start_location = start_location; | |
| 2882 jvmti_table[i].length = length; | |
| 2883 jvmti_table[i].name = name_buf; | |
| 2884 jvmti_table[i].signature = sig_buf; | |
| 2885 jvmti_table[i].generic_signature = gen_sig_buf; | |
| 2886 jvmti_table[i].slot = slot; | |
| 2887 } | |
| 2888 } | |
| 2889 | |
| 2890 // set results | |
| 2891 (*entry_count_ptr) = num_entries; | |
| 2892 (*table_ptr) = jvmti_table; | |
| 2893 | |
| 2894 return JVMTI_ERROR_NONE; | |
| 2895 } /* end GetLocalVariableTable */ | |
| 2896 | |
| 2897 | |
| 2898 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2899 // bytecode_count_ptr - pre-checked for NULL | |
| 2900 // bytecodes_ptr - pre-checked for NULL | |
| 2901 jvmtiError | |
| 2902 JvmtiEnv::GetBytecodes(methodOop method_oop, jint* bytecode_count_ptr, unsigned char** bytecodes_ptr) { | |
| 2903 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2904 | |
| 2905 HandleMark hm; | |
| 2906 methodHandle method(method_oop); | |
| 2907 jint size = (jint)method->code_size(); | |
| 2908 jvmtiError err = allocate(size, bytecodes_ptr); | |
| 2909 if (err != JVMTI_ERROR_NONE) { | |
| 2910 return err; | |
| 2911 } | |
| 2912 | |
| 2913 (*bytecode_count_ptr) = size; | |
| 2914 // get byte codes | |
| 2915 JvmtiClassFileReconstituter::copy_bytecodes(method, *bytecodes_ptr); | |
| 2916 | |
| 2917 return JVMTI_ERROR_NONE; | |
| 2918 } /* end GetBytecodes */ | |
| 2919 | |
| 2920 | |
| 2921 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2922 // is_native_ptr - pre-checked for NULL | |
| 2923 jvmtiError | |
| 2924 JvmtiEnv::IsMethodNative(methodOop method_oop, jboolean* is_native_ptr) { | |
| 2925 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2926 (*is_native_ptr) = method_oop->is_native(); | |
| 2927 return JVMTI_ERROR_NONE; | |
| 2928 } /* end IsMethodNative */ | |
| 2929 | |
| 2930 | |
| 2931 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2932 // is_synthetic_ptr - pre-checked for NULL | |
| 2933 jvmtiError | |
| 2934 JvmtiEnv::IsMethodSynthetic(methodOop method_oop, jboolean* is_synthetic_ptr) { | |
| 2935 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2936 (*is_synthetic_ptr) = method_oop->is_synthetic(); | |
| 2937 return JVMTI_ERROR_NONE; | |
| 2938 } /* end IsMethodSynthetic */ | |
| 2939 | |
| 2940 | |
| 2941 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2942 // is_obsolete_ptr - pre-checked for NULL | |
| 2943 jvmtiError | |
| 2944 JvmtiEnv::IsMethodObsolete(methodOop method_oop, jboolean* is_obsolete_ptr) { | |
| 1121 | 2945 if (use_version_1_0_semantics() && |
| 2946 get_capabilities()->can_redefine_classes == 0) { | |
| 2947 // This JvmtiEnv requested version 1.0 semantics and this function | |
| 2948 // requires the can_redefine_classes capability in version 1.0 so | |
| 2949 // we need to return an error here. | |
| 2950 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; | |
| 2951 } | |
| 2952 | |
| 0 | 2953 if (method_oop == NULL || method_oop->is_obsolete()) { |
| 2954 *is_obsolete_ptr = true; | |
| 2955 } else { | |
| 2956 *is_obsolete_ptr = false; | |
| 2957 } | |
| 2958 return JVMTI_ERROR_NONE; | |
| 2959 } /* end IsMethodObsolete */ | |
| 2960 | |
| 2961 // | |
| 2962 // Raw Monitor functions | |
| 2963 // | |
| 2964 | |
| 2965 // name - pre-checked for NULL | |
| 2966 // monitor_ptr - pre-checked for NULL | |
| 2967 jvmtiError | |
| 2968 JvmtiEnv::CreateRawMonitor(const char* name, jrawMonitorID* monitor_ptr) { | |
| 2969 JvmtiRawMonitor* rmonitor = new JvmtiRawMonitor(name); | |
| 2970 NULL_CHECK(rmonitor, JVMTI_ERROR_OUT_OF_MEMORY); | |
| 2971 | |
| 2972 *monitor_ptr = (jrawMonitorID)rmonitor; | |
| 2973 | |
| 2974 return JVMTI_ERROR_NONE; | |
| 2975 } /* end CreateRawMonitor */ | |
| 2976 | |
| 2977 | |
| 2978 // rmonitor - pre-checked for validity | |
| 2979 jvmtiError | |
| 2980 JvmtiEnv::DestroyRawMonitor(JvmtiRawMonitor * rmonitor) { | |
| 2981 if (Threads::number_of_threads() == 0) { | |
| 2982 // Remove this monitor from pending raw monitors list | |
| 2983 // if it has entered in onload or start phase. | |
| 2984 JvmtiPendingMonitors::destroy(rmonitor); | |
| 2985 } else { | |
| 2986 Thread* thread = Thread::current(); | |
| 2987 if (rmonitor->is_entered(thread)) { | |
| 2988 // The caller owns this monitor which we are about to destroy. | |
| 2989 // We exit the underlying synchronization object so that the | |
| 2990 // "delete monitor" call below can work without an assertion | |
| 2991 // failure on systems that don't like destroying synchronization | |
| 2992 // objects that are locked. | |
| 2993 int r; | |
| 2994 intptr_t recursion = rmonitor->recursions(); | |
| 2995 for (intptr_t i=0; i <= recursion; i++) { | |
| 2996 r = rmonitor->raw_exit(thread); | |
| 2997 assert(r == ObjectMonitor::OM_OK, "raw_exit should have worked"); | |
| 2998 if (r != ObjectMonitor::OM_OK) { // robustness | |
| 2999 return JVMTI_ERROR_INTERNAL; | |
| 3000 } | |
| 3001 } | |
| 3002 } | |
| 3003 if (rmonitor->owner() != NULL) { | |
| 3004 // The caller is trying to destroy a monitor that is locked by | |
| 3005 // someone else. While this is not forbidden by the JVMTI | |
| 3006 // spec, it will cause an assertion failure on systems that don't | |
| 3007 // like destroying synchronization objects that are locked. | |
| 3008 // We indicate a problem with the error return (and leak the | |
| 3009 // monitor's memory). | |
| 3010 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
| 3011 } | |
| 3012 } | |
| 3013 | |
| 3014 delete rmonitor; | |
| 3015 | |
| 3016 return JVMTI_ERROR_NONE; | |
| 3017 } /* end DestroyRawMonitor */ | |
| 3018 | |
| 3019 | |
| 3020 // rmonitor - pre-checked for validity | |
| 3021 jvmtiError | |
| 3022 JvmtiEnv::RawMonitorEnter(JvmtiRawMonitor * rmonitor) { | |
| 3023 if (Threads::number_of_threads() == 0) { | |
| 3024 // No JavaThreads exist so ObjectMonitor enter cannot be | |
| 3025 // used, add this raw monitor to the pending list. | |
| 3026 // The pending monitors will be actually entered when | |
| 3027 // the VM is setup. | |
| 3028 // See transition_pending_raw_monitors in create_vm() | |
| 3029 // in thread.cpp. | |
| 3030 JvmtiPendingMonitors::enter(rmonitor); | |
| 3031 } else { | |
| 3032 int r; | |
| 3033 Thread* thread = Thread::current(); | |
| 3034 | |
| 3035 if (thread->is_Java_thread()) { | |
| 3036 JavaThread* current_thread = (JavaThread*)thread; | |
| 3037 | |
| 3038 #ifdef PROPER_TRANSITIONS | |
| 3039 // Not really unknown but ThreadInVMfromNative does more than we want | |
| 3040 ThreadInVMfromUnknown __tiv; | |
| 3041 { | |
| 3042 ThreadBlockInVM __tbivm(current_thread); | |
| 3043 r = rmonitor->raw_enter(current_thread); | |
| 3044 } | |
| 3045 #else | |
| 3046 /* Transition to thread_blocked without entering vm state */ | |
| 3047 /* This is really evil. Normally you can't undo _thread_blocked */ | |
| 3048 /* transitions like this because it would cause us to miss a */ | |
| 3049 /* safepoint but since the thread was already in _thread_in_native */ | |
| 3050 /* the thread is not leaving a safepoint safe state and it will */ | |
| 3051 /* block when it tries to return from native. We can't safepoint */ | |
| 3052 /* block in here because we could deadlock the vmthread. Blech. */ | |
| 3053 | |
| 3054 JavaThreadState state = current_thread->thread_state(); | |
| 3055 assert(state == _thread_in_native, "Must be _thread_in_native"); | |
| 3056 // frame should already be walkable since we are in native | |
| 3057 assert(!current_thread->has_last_Java_frame() || | |
| 3058 current_thread->frame_anchor()->walkable(), "Must be walkable"); | |
| 3059 current_thread->set_thread_state(_thread_blocked); | |
| 3060 | |
| 3061 r = rmonitor->raw_enter(current_thread); | |
| 3062 // restore state, still at a safepoint safe state | |
| 3063 current_thread->set_thread_state(state); | |
| 3064 | |
| 3065 #endif /* PROPER_TRANSITIONS */ | |
| 3066 assert(r == ObjectMonitor::OM_OK, "raw_enter should have worked"); | |
| 3067 } else { | |
| 3068 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
| 3069 r = rmonitor->raw_enter(thread); | |
| 3070 } else { | |
| 3071 ShouldNotReachHere(); | |
| 3072 } | |
| 3073 } | |
| 3074 | |
| 3075 if (r != ObjectMonitor::OM_OK) { // robustness | |
| 3076 return JVMTI_ERROR_INTERNAL; | |
| 3077 } | |
| 3078 } | |
| 3079 return JVMTI_ERROR_NONE; | |
| 3080 } /* end RawMonitorEnter */ | |
| 3081 | |
| 3082 | |
| 3083 // rmonitor - pre-checked for validity | |
| 3084 jvmtiError | |
| 3085 JvmtiEnv::RawMonitorExit(JvmtiRawMonitor * rmonitor) { | |
| 3086 jvmtiError err = JVMTI_ERROR_NONE; | |
| 3087 | |
| 3088 if (Threads::number_of_threads() == 0) { | |
| 3089 // No JavaThreads exist so just remove this monitor from the pending list. | |
| 3090 // Bool value from exit is false if rmonitor is not in the list. | |
| 3091 if (!JvmtiPendingMonitors::exit(rmonitor)) { | |
| 3092 err = JVMTI_ERROR_NOT_MONITOR_OWNER; | |
| 3093 } | |
| 3094 } else { | |
| 3095 int r; | |
| 3096 Thread* thread = Thread::current(); | |
| 3097 | |
| 3098 if (thread->is_Java_thread()) { | |
| 3099 JavaThread* current_thread = (JavaThread*)thread; | |
| 3100 #ifdef PROPER_TRANSITIONS | |
| 3101 // Not really unknown but ThreadInVMfromNative does more than we want | |
| 3102 ThreadInVMfromUnknown __tiv; | |
| 3103 #endif /* PROPER_TRANSITIONS */ | |
| 3104 r = rmonitor->raw_exit(current_thread); | |
| 3105 } else { | |
| 3106 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
| 3107 r = rmonitor->raw_exit(thread); | |
| 3108 } else { | |
| 3109 ShouldNotReachHere(); | |
| 3110 } | |
| 3111 } | |
| 3112 | |
| 3113 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
| 3114 err = JVMTI_ERROR_NOT_MONITOR_OWNER; | |
| 3115 } else { | |
| 3116 assert(r == ObjectMonitor::OM_OK, "raw_exit should have worked"); | |
| 3117 if (r != ObjectMonitor::OM_OK) { // robustness | |
| 3118 err = JVMTI_ERROR_INTERNAL; | |
| 3119 } | |
| 3120 } | |
| 3121 } | |
| 3122 return err; | |
| 3123 } /* end RawMonitorExit */ | |
| 3124 | |
| 3125 | |
| 3126 // rmonitor - pre-checked for validity | |
| 3127 jvmtiError | |
| 3128 JvmtiEnv::RawMonitorWait(JvmtiRawMonitor * rmonitor, jlong millis) { | |
| 3129 int r; | |
| 3130 Thread* thread = Thread::current(); | |
| 3131 | |
| 3132 if (thread->is_Java_thread()) { | |
| 3133 JavaThread* current_thread = (JavaThread*)thread; | |
| 3134 #ifdef PROPER_TRANSITIONS | |
| 3135 // Not really unknown but ThreadInVMfromNative does more than we want | |
| 3136 ThreadInVMfromUnknown __tiv; | |
| 3137 { | |
| 3138 ThreadBlockInVM __tbivm(current_thread); | |
| 3139 r = rmonitor->raw_wait(millis, true, current_thread); | |
| 3140 } | |
| 3141 #else | |
| 3142 /* Transition to thread_blocked without entering vm state */ | |
| 3143 /* This is really evil. Normally you can't undo _thread_blocked */ | |
| 3144 /* transitions like this because it would cause us to miss a */ | |
| 3145 /* safepoint but since the thread was already in _thread_in_native */ | |
| 3146 /* the thread is not leaving a safepoint safe state and it will */ | |
| 3147 /* block when it tries to return from native. We can't safepoint */ | |
| 3148 /* block in here because we could deadlock the vmthread. Blech. */ | |
| 3149 | |
| 3150 JavaThreadState state = current_thread->thread_state(); | |
| 3151 assert(state == _thread_in_native, "Must be _thread_in_native"); | |
| 3152 // frame should already be walkable since we are in native | |
| 3153 assert(!current_thread->has_last_Java_frame() || | |
| 3154 current_thread->frame_anchor()->walkable(), "Must be walkable"); | |
| 3155 current_thread->set_thread_state(_thread_blocked); | |
| 3156 | |
| 3157 r = rmonitor->raw_wait(millis, true, current_thread); | |
| 3158 // restore state, still at a safepoint safe state | |
| 3159 current_thread->set_thread_state(state); | |
| 3160 | |
| 3161 #endif /* PROPER_TRANSITIONS */ | |
| 3162 } else { | |
| 3163 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
| 3164 r = rmonitor->raw_wait(millis, true, thread); | |
| 3165 } else { | |
| 3166 ShouldNotReachHere(); | |
| 3167 } | |
| 3168 } | |
| 3169 | |
| 3170 switch (r) { | |
| 3171 case ObjectMonitor::OM_INTERRUPTED: | |
| 3172 return JVMTI_ERROR_INTERRUPT; | |
| 3173 case ObjectMonitor::OM_ILLEGAL_MONITOR_STATE: | |
| 3174 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
| 3175 } | |
| 3176 assert(r == ObjectMonitor::OM_OK, "raw_wait should have worked"); | |
| 3177 if (r != ObjectMonitor::OM_OK) { // robustness | |
| 3178 return JVMTI_ERROR_INTERNAL; | |
| 3179 } | |
| 3180 | |
| 3181 return JVMTI_ERROR_NONE; | |
| 3182 } /* end RawMonitorWait */ | |
| 3183 | |
| 3184 | |
| 3185 // rmonitor - pre-checked for validity | |
| 3186 jvmtiError | |
| 3187 JvmtiEnv::RawMonitorNotify(JvmtiRawMonitor * rmonitor) { | |
| 3188 int r; | |
| 3189 Thread* thread = Thread::current(); | |
| 3190 | |
| 3191 if (thread->is_Java_thread()) { | |
| 3192 JavaThread* current_thread = (JavaThread*)thread; | |
| 3193 // Not really unknown but ThreadInVMfromNative does more than we want | |
| 3194 ThreadInVMfromUnknown __tiv; | |
| 3195 r = rmonitor->raw_notify(current_thread); | |
| 3196 } else { | |
| 3197 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
| 3198 r = rmonitor->raw_notify(thread); | |
| 3199 } else { | |
| 3200 ShouldNotReachHere(); | |
| 3201 } | |
| 3202 } | |
| 3203 | |
| 3204 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
| 3205 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
| 3206 } | |
| 3207 assert(r == ObjectMonitor::OM_OK, "raw_notify should have worked"); | |
| 3208 if (r != ObjectMonitor::OM_OK) { // robustness | |
| 3209 return JVMTI_ERROR_INTERNAL; | |
| 3210 } | |
| 3211 | |
| 3212 return JVMTI_ERROR_NONE; | |
| 3213 } /* end RawMonitorNotify */ | |
| 3214 | |
| 3215 | |
| 3216 // rmonitor - pre-checked for validity | |
| 3217 jvmtiError | |
| 3218 JvmtiEnv::RawMonitorNotifyAll(JvmtiRawMonitor * rmonitor) { | |
| 3219 int r; | |
| 3220 Thread* thread = Thread::current(); | |
| 3221 | |
| 3222 if (thread->is_Java_thread()) { | |
| 3223 JavaThread* current_thread = (JavaThread*)thread; | |
| 3224 ThreadInVMfromUnknown __tiv; | |
| 3225 r = rmonitor->raw_notifyAll(current_thread); | |
| 3226 } else { | |
| 3227 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
| 3228 r = rmonitor->raw_notifyAll(thread); | |
| 3229 } else { | |
| 3230 ShouldNotReachHere(); | |
| 3231 } | |
| 3232 } | |
| 3233 | |
| 3234 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
| 3235 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
| 3236 } | |
| 3237 assert(r == ObjectMonitor::OM_OK, "raw_notifyAll should have worked"); | |
| 3238 if (r != ObjectMonitor::OM_OK) { // robustness | |
| 3239 return JVMTI_ERROR_INTERNAL; | |
| 3240 } | |
| 3241 | |
| 3242 return JVMTI_ERROR_NONE; | |
| 3243 } /* end RawMonitorNotifyAll */ | |
| 3244 | |
| 3245 | |
| 3246 // | |
| 3247 // JNI Function Interception functions | |
| 3248 // | |
| 3249 | |
| 3250 | |
| 3251 // function_table - pre-checked for NULL | |
| 3252 jvmtiError | |
| 3253 JvmtiEnv::SetJNIFunctionTable(const jniNativeInterface* function_table) { | |
| 3254 // Copy jni function table at safepoint. | |
| 3255 VM_JNIFunctionTableCopier copier(function_table); | |
| 3256 VMThread::execute(&copier); | |
| 3257 | |
| 3258 return JVMTI_ERROR_NONE; | |
| 3259 } /* end SetJNIFunctionTable */ | |
| 3260 | |
| 3261 | |
| 3262 // function_table - pre-checked for NULL | |
| 3263 jvmtiError | |
| 3264 JvmtiEnv::GetJNIFunctionTable(jniNativeInterface** function_table) { | |
| 3265 *function_table=(jniNativeInterface*)jvmtiMalloc(sizeof(jniNativeInterface)); | |
| 3266 if (*function_table == NULL) | |
| 3267 return JVMTI_ERROR_OUT_OF_MEMORY; | |
| 3268 memcpy(*function_table,(JavaThread::current())->get_jni_functions(),sizeof(jniNativeInterface)); | |
| 3269 return JVMTI_ERROR_NONE; | |
| 3270 } /* end GetJNIFunctionTable */ | |
| 3271 | |
| 3272 | |
| 3273 // | |
| 3274 // Event Management functions | |
| 3275 // | |
| 3276 | |
| 3277 jvmtiError | |
| 3278 JvmtiEnv::GenerateEvents(jvmtiEvent event_type) { | |
| 3279 // can only generate two event types | |
| 3280 if (event_type != JVMTI_EVENT_COMPILED_METHOD_LOAD && | |
| 3281 event_type != JVMTI_EVENT_DYNAMIC_CODE_GENERATED) { | |
| 3282 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
| 3283 } | |
| 3284 | |
| 3285 // for compiled_method_load events we must check that the environment | |
| 3286 // has the can_generate_compiled_method_load_events capability. | |
| 3287 if (event_type == JVMTI_EVENT_COMPILED_METHOD_LOAD) { | |
| 3288 if (get_capabilities()->can_generate_compiled_method_load_events == 0) { | |
| 3289 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; | |
| 3290 } | |
| 3291 return JvmtiCodeBlobEvents::generate_compiled_method_load_events(this); | |
| 3292 } else { | |
| 3293 return JvmtiCodeBlobEvents::generate_dynamic_code_events(this); | |
| 3294 } | |
| 3295 | |
| 3296 } /* end GenerateEvents */ | |
| 3297 | |
| 3298 | |
| 3299 // | |
| 3300 // Extension Mechanism functions | |
| 3301 // | |
| 3302 | |
| 3303 // extension_count_ptr - pre-checked for NULL | |
| 3304 // extensions - pre-checked for NULL | |
| 3305 jvmtiError | |
| 3306 JvmtiEnv::GetExtensionFunctions(jint* extension_count_ptr, jvmtiExtensionFunctionInfo** extensions) { | |
| 3307 return JvmtiExtensions::get_functions(this, extension_count_ptr, extensions); | |
| 3308 } /* end GetExtensionFunctions */ | |
| 3309 | |
| 3310 | |
| 3311 // extension_count_ptr - pre-checked for NULL | |
| 3312 // extensions - pre-checked for NULL | |
| 3313 jvmtiError | |
| 3314 JvmtiEnv::GetExtensionEvents(jint* extension_count_ptr, jvmtiExtensionEventInfo** extensions) { | |
| 3315 return JvmtiExtensions::get_events(this, extension_count_ptr, extensions); | |
| 3316 } /* end GetExtensionEvents */ | |
| 3317 | |
| 3318 | |
| 3319 // callback - NULL is a valid value, must be checked | |
| 3320 jvmtiError | |
| 3321 JvmtiEnv::SetExtensionEventCallback(jint extension_event_index, jvmtiExtensionEvent callback) { | |
| 3322 return JvmtiExtensions::set_event_callback(this, extension_event_index, callback); | |
| 3323 } /* end SetExtensionEventCallback */ | |
| 3324 | |
| 3325 // | |
| 3326 // Timers functions | |
| 3327 // | |
| 3328 | |
| 3329 // info_ptr - pre-checked for NULL | |
| 3330 jvmtiError | |
| 3331 JvmtiEnv::GetCurrentThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) { | |
| 3332 os::current_thread_cpu_time_info(info_ptr); | |
| 3333 return JVMTI_ERROR_NONE; | |
| 3334 } /* end GetCurrentThreadCpuTimerInfo */ | |
| 3335 | |
| 3336 | |
| 3337 // nanos_ptr - pre-checked for NULL | |
| 3338 jvmtiError | |
| 3339 JvmtiEnv::GetCurrentThreadCpuTime(jlong* nanos_ptr) { | |
| 3340 *nanos_ptr = os::current_thread_cpu_time(); | |
| 3341 return JVMTI_ERROR_NONE; | |
| 3342 } /* end GetCurrentThreadCpuTime */ | |
| 3343 | |
| 3344 | |
| 3345 // info_ptr - pre-checked for NULL | |
| 3346 jvmtiError | |
| 3347 JvmtiEnv::GetThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) { | |
| 3348 os::thread_cpu_time_info(info_ptr); | |
| 3349 return JVMTI_ERROR_NONE; | |
| 3350 } /* end GetThreadCpuTimerInfo */ | |
| 3351 | |
| 3352 | |
| 3353 // Threads_lock NOT held, java_thread not protected by lock | |
| 3354 // java_thread - pre-checked | |
| 3355 // nanos_ptr - pre-checked for NULL | |
| 3356 jvmtiError | |
| 3357 JvmtiEnv::GetThreadCpuTime(JavaThread* java_thread, jlong* nanos_ptr) { | |
| 3358 *nanos_ptr = os::thread_cpu_time(java_thread); | |
| 3359 return JVMTI_ERROR_NONE; | |
| 3360 } /* end GetThreadCpuTime */ | |
| 3361 | |
| 3362 | |
| 3363 // info_ptr - pre-checked for NULL | |
| 3364 jvmtiError | |
| 3365 JvmtiEnv::GetTimerInfo(jvmtiTimerInfo* info_ptr) { | |
| 3366 os::javaTimeNanos_info(info_ptr); | |
| 3367 return JVMTI_ERROR_NONE; | |
| 3368 } /* end GetTimerInfo */ | |
| 3369 | |
| 3370 | |
| 3371 // nanos_ptr - pre-checked for NULL | |
| 3372 jvmtiError | |
| 3373 JvmtiEnv::GetTime(jlong* nanos_ptr) { | |
| 3374 *nanos_ptr = os::javaTimeNanos(); | |
| 3375 return JVMTI_ERROR_NONE; | |
| 3376 } /* end GetTime */ | |
| 3377 | |
| 3378 | |
| 3379 // processor_count_ptr - pre-checked for NULL | |
| 3380 jvmtiError | |
| 3381 JvmtiEnv::GetAvailableProcessors(jint* processor_count_ptr) { | |
| 3382 *processor_count_ptr = os::active_processor_count(); | |
| 3383 return JVMTI_ERROR_NONE; | |
| 3384 } /* end GetAvailableProcessors */ | |
| 3385 | |
| 3386 // | |
| 3387 // System Properties functions | |
| 3388 // | |
| 3389 | |
| 3390 // count_ptr - pre-checked for NULL | |
| 3391 // property_ptr - pre-checked for NULL | |
| 3392 jvmtiError | |
| 3393 JvmtiEnv::GetSystemProperties(jint* count_ptr, char*** property_ptr) { | |
| 3394 jvmtiError err = JVMTI_ERROR_NONE; | |
| 3395 | |
| 3396 *count_ptr = Arguments::PropertyList_count(Arguments::system_properties()); | |
| 3397 | |
| 3398 err = allocate(*count_ptr * sizeof(char *), (unsigned char **)property_ptr); | |
| 3399 if (err != JVMTI_ERROR_NONE) { | |
| 3400 return err; | |
| 3401 } | |
| 3402 int i = 0 ; | |
| 3403 for (SystemProperty* p = Arguments::system_properties(); p != NULL && i < *count_ptr; p = p->next(), i++) { | |
| 3404 const char *key = p->key(); | |
| 3405 char **tmp_value = *property_ptr+i; | |
| 3406 err = allocate((strlen(key)+1) * sizeof(char), (unsigned char**)tmp_value); | |
| 3407 if (err == JVMTI_ERROR_NONE) { | |
| 3408 strcpy(*tmp_value, key); | |
| 3409 } else { | |
| 3410 // clean up previously allocated memory. | |
| 3411 for (int j=0; j<i; j++) { | |
| 3412 Deallocate((unsigned char*)*property_ptr+j); | |
| 3413 } | |
| 3414 Deallocate((unsigned char*)property_ptr); | |
| 3415 break; | |
| 3416 } | |
| 3417 } | |
| 3418 return err; | |
| 3419 } /* end GetSystemProperties */ | |
| 3420 | |
| 3421 | |
| 3422 // property - pre-checked for NULL | |
| 3423 // value_ptr - pre-checked for NULL | |
| 3424 jvmtiError | |
| 3425 JvmtiEnv::GetSystemProperty(const char* property, char** value_ptr) { | |
| 3426 jvmtiError err = JVMTI_ERROR_NONE; | |
| 3427 const char *value; | |
| 3428 | |
| 3429 value = Arguments::PropertyList_get_value(Arguments::system_properties(), property); | |
| 3430 if (value == NULL) { | |
| 3431 err = JVMTI_ERROR_NOT_AVAILABLE; | |
| 3432 } else { | |
| 3433 err = allocate((strlen(value)+1) * sizeof(char), (unsigned char **)value_ptr); | |
| 3434 if (err == JVMTI_ERROR_NONE) { | |
| 3435 strcpy(*value_ptr, value); | |
| 3436 } | |
| 3437 } | |
| 3438 return err; | |
| 3439 } /* end GetSystemProperty */ | |
| 3440 | |
| 3441 | |
| 3442 // property - pre-checked for NULL | |
| 3443 // value - NULL is a valid value, must be checked | |
| 3444 jvmtiError | |
|
2100
b1a2afa37ec4
7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents:
2019
diff
changeset
|
3445 JvmtiEnv::SetSystemProperty(const char* property, const char* value_ptr) { |
| 0 | 3446 jvmtiError err =JVMTI_ERROR_NOT_AVAILABLE; |
| 3447 | |
| 3448 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
| 3449 if (strcmp(property, p->key()) == 0) { | |
|
2100
b1a2afa37ec4
7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents:
2019
diff
changeset
|
3450 if (p->set_value((char *)value_ptr)) { |
| 0 | 3451 err = JVMTI_ERROR_NONE; |
| 3452 } | |
| 3453 } | |
| 3454 } | |
| 3455 return err; | |
| 3456 } /* end SetSystemProperty */ | |
| 3457 | |
| 3458 #endif // !JVMTI_KERNEL |