Mercurial > hg > graal-jvmci-8
annotate src/share/vm/prims/jvmtiEnv.cpp @ 14704:b51e29501f30
Merged with jdk9/dev/hotspot changeset 9486a41de3b7
| author | twisti |
|---|---|
| date | Tue, 18 Mar 2014 20:19:10 -0700 |
| parents | d8041d695d19 0d8d78c0329a |
| children | 92aa6797d639 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2003, 2014, 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/instanceKlass.hpp" | |
| 34 #include "prims/jniCheck.hpp" | |
| 35 #include "prims/jvm_misc.hpp" | |
| 36 #include "prims/jvmtiAgentThread.hpp" | |
| 37 #include "prims/jvmtiClassFileReconstituter.hpp" | |
| 38 #include "prims/jvmtiCodeBlobEvents.hpp" | |
| 39 #include "prims/jvmtiExtensions.hpp" | |
| 40 #include "prims/jvmtiGetLoadedClasses.hpp" | |
| 41 #include "prims/jvmtiImpl.hpp" | |
| 42 #include "prims/jvmtiManageCapabilities.hpp" | |
| 43 #include "prims/jvmtiRawMonitor.hpp" | |
| 44 #include "prims/jvmtiRedefineClasses.hpp" | |
| 45 #include "prims/jvmtiTagMap.hpp" | |
| 46 #include "prims/jvmtiThreadState.inline.hpp" | |
| 47 #include "prims/jvmtiUtil.hpp" | |
| 48 #include "runtime/arguments.hpp" | |
| 49 #include "runtime/deoptimization.hpp" | |
| 50 #include "runtime/interfaceSupport.hpp" | |
| 51 #include "runtime/javaCalls.hpp" | |
| 52 #include "runtime/jfieldIDWorkaround.hpp" | |
| 53 #include "runtime/osThread.hpp" | |
| 54 #include "runtime/reflectionUtils.hpp" | |
| 55 #include "runtime/signature.hpp" | |
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56 #include "runtime/thread.inline.hpp" |
| 1972 | 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" | |
| 0 | 62 |
| 63 | |
| 64 #define FIXLATER 0 // REMOVE this when completed. | |
| 65 | |
| 66 // FIXLATER: hook into JvmtiTrace | |
| 67 #define TraceJVMTICalls false | |
| 68 | |
| 1121 | 69 JvmtiEnv::JvmtiEnv(jint version) : JvmtiEnvBase(version) { |
| 0 | 70 } |
| 71 | |
| 72 JvmtiEnv::~JvmtiEnv() { | |
| 73 } | |
| 74 | |
| 75 JvmtiEnv* | |
| 1121 | 76 JvmtiEnv::create_a_jvmti(jint version) { |
| 77 return new JvmtiEnv(version); | |
| 0 | 78 } |
| 79 | |
| 80 // VM operation class to copy jni function table at safepoint. | |
| 81 // More than one java threads or jvmti agents may be reading/ | |
| 82 // modifying jni function tables. To reduce the risk of bad | |
| 83 // interaction b/w these threads it is copied at safepoint. | |
| 84 class VM_JNIFunctionTableCopier : public VM_Operation { | |
| 85 private: | |
| 86 const struct JNINativeInterface_ *_function_table; | |
| 87 public: | |
| 88 VM_JNIFunctionTableCopier(const struct JNINativeInterface_ *func_tbl) { | |
| 89 _function_table = func_tbl; | |
| 90 }; | |
| 91 | |
| 92 VMOp_Type type() const { return VMOp_JNIFunctionTableCopier; } | |
| 93 void doit() { | |
| 94 copy_jni_function_table(_function_table); | |
| 95 }; | |
| 96 }; | |
| 97 | |
| 98 // | |
| 99 // Do not change the "prefix" marker below, everything above it is copied | |
| 100 // unchanged into the filled stub, everything below is controlled by the | |
| 101 // stub filler (only method bodies are carried forward, and then only for | |
| 102 // functionality still in the spec). | |
| 103 // | |
| 104 // end file prefix | |
| 105 | |
| 106 // | |
| 107 // Memory Management functions | |
| 108 // | |
| 109 | |
| 110 // mem_ptr - pre-checked for NULL | |
| 111 jvmtiError | |
| 112 JvmtiEnv::Allocate(jlong size, unsigned char** mem_ptr) { | |
| 113 return allocate(size, mem_ptr); | |
| 114 } /* end Allocate */ | |
| 115 | |
| 116 | |
| 117 // mem - NULL is a valid value, must be checked | |
| 118 jvmtiError | |
| 119 JvmtiEnv::Deallocate(unsigned char* mem) { | |
| 120 return deallocate(mem); | |
| 121 } /* end Deallocate */ | |
| 122 | |
| 123 // Threads_lock NOT held, java_thread not protected by lock | |
| 124 // java_thread - pre-checked | |
| 125 // data - NULL is a valid value, must be checked | |
| 126 jvmtiError | |
| 127 JvmtiEnv::SetThreadLocalStorage(JavaThread* java_thread, const void* data) { | |
| 128 JvmtiThreadState* state = java_thread->jvmti_thread_state(); | |
| 129 if (state == NULL) { | |
| 130 if (data == NULL) { | |
| 131 // leaving state unset same as data set to NULL | |
| 132 return JVMTI_ERROR_NONE; | |
| 133 } | |
| 134 // otherwise, create the state | |
| 135 state = JvmtiThreadState::state_for(java_thread); | |
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136 if (state == NULL) { |
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137 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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138 } |
| 0 | 139 } |
| 140 state->env_thread_state(this)->set_agent_thread_local_storage_data((void*)data); | |
| 141 return JVMTI_ERROR_NONE; | |
| 142 } /* end SetThreadLocalStorage */ | |
| 143 | |
| 144 | |
| 145 // Threads_lock NOT held | |
| 146 // thread - NOT pre-checked | |
| 147 // data_ptr - pre-checked for NULL | |
| 148 jvmtiError | |
| 149 JvmtiEnv::GetThreadLocalStorage(jthread thread, void** data_ptr) { | |
| 150 JavaThread* current_thread = JavaThread::current(); | |
| 151 if (thread == NULL) { | |
| 152 JvmtiThreadState* state = current_thread->jvmti_thread_state(); | |
| 153 *data_ptr = (state == NULL) ? NULL : | |
| 154 state->env_thread_state(this)->get_agent_thread_local_storage_data(); | |
| 155 } else { | |
| 156 | |
| 157 // jvmti_GetThreadLocalStorage is "in native" and doesn't transition | |
| 158 // the thread to _thread_in_vm. However, when the TLS for a thread | |
| 159 // other than the current thread is required we need to transition | |
| 160 // from native so as to resolve the jthread. | |
| 161 | |
| 162 ThreadInVMfromNative __tiv(current_thread); | |
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163 VM_ENTRY_BASE(jvmtiError, JvmtiEnv::GetThreadLocalStorage , current_thread) |
| 0 | 164 debug_only(VMNativeEntryWrapper __vew;) |
| 165 | |
| 166 oop thread_oop = JNIHandles::resolve_external_guard(thread); | |
| 167 if (thread_oop == NULL) { | |
| 168 return JVMTI_ERROR_INVALID_THREAD; | |
| 169 } | |
| 1142 | 170 if (!thread_oop->is_a(SystemDictionary::Thread_klass())) { |
| 0 | 171 return JVMTI_ERROR_INVALID_THREAD; |
| 172 } | |
| 173 JavaThread* java_thread = java_lang_Thread::thread(thread_oop); | |
| 174 if (java_thread == NULL) { | |
| 175 return JVMTI_ERROR_THREAD_NOT_ALIVE; | |
| 176 } | |
| 177 JvmtiThreadState* state = java_thread->jvmti_thread_state(); | |
| 178 *data_ptr = (state == NULL) ? NULL : | |
| 179 state->env_thread_state(this)->get_agent_thread_local_storage_data(); | |
| 180 } | |
| 181 return JVMTI_ERROR_NONE; | |
| 182 } /* end GetThreadLocalStorage */ | |
| 183 | |
| 184 // | |
| 185 // Class functions | |
| 186 // | |
| 187 | |
| 188 // class_count_ptr - pre-checked for NULL | |
| 189 // classes_ptr - pre-checked for NULL | |
| 190 jvmtiError | |
| 191 JvmtiEnv::GetLoadedClasses(jint* class_count_ptr, jclass** classes_ptr) { | |
| 192 return JvmtiGetLoadedClasses::getLoadedClasses(this, class_count_ptr, classes_ptr); | |
| 193 } /* end GetLoadedClasses */ | |
| 194 | |
| 195 | |
| 196 // initiating_loader - NULL is a valid value, must be checked | |
| 197 // class_count_ptr - pre-checked for NULL | |
| 198 // classes_ptr - pre-checked for NULL | |
| 199 jvmtiError | |
| 200 JvmtiEnv::GetClassLoaderClasses(jobject initiating_loader, jint* class_count_ptr, jclass** classes_ptr) { | |
| 201 return JvmtiGetLoadedClasses::getClassLoaderClasses(this, initiating_loader, | |
| 202 class_count_ptr, classes_ptr); | |
| 203 } /* end GetClassLoaderClasses */ | |
| 204 | |
| 205 // k_mirror - may be primitive, this must be checked | |
| 206 // is_modifiable_class_ptr - pre-checked for NULL | |
| 207 jvmtiError | |
| 208 JvmtiEnv::IsModifiableClass(oop k_mirror, jboolean* is_modifiable_class_ptr) { | |
| 209 *is_modifiable_class_ptr = VM_RedefineClasses::is_modifiable_class(k_mirror)? | |
| 210 JNI_TRUE : JNI_FALSE; | |
| 211 return JVMTI_ERROR_NONE; | |
| 212 } /* end IsModifiableClass */ | |
| 213 | |
| 214 // class_count - pre-checked to be greater than or equal to 0 | |
| 215 // classes - pre-checked for NULL | |
| 216 jvmtiError | |
| 217 JvmtiEnv::RetransformClasses(jint class_count, const jclass* classes) { | |
| 218 //TODO: add locking | |
| 219 | |
| 220 int index; | |
| 221 JavaThread* current_thread = JavaThread::current(); | |
| 222 ResourceMark rm(current_thread); | |
| 223 | |
| 224 jvmtiClassDefinition* class_definitions = | |
| 225 NEW_RESOURCE_ARRAY(jvmtiClassDefinition, class_count); | |
| 226 NULL_CHECK(class_definitions, JVMTI_ERROR_OUT_OF_MEMORY); | |
| 227 | |
| 228 for (index = 0; index < class_count; index++) { | |
| 229 HandleMark hm(current_thread); | |
| 230 | |
| 231 jclass jcls = classes[index]; | |
| 232 oop k_mirror = JNIHandles::resolve_external_guard(jcls); | |
| 233 if (k_mirror == NULL) { | |
| 234 return JVMTI_ERROR_INVALID_CLASS; | |
| 235 } | |
| 1142 | 236 if (!k_mirror->is_a(SystemDictionary::Class_klass())) { |
| 0 | 237 return JVMTI_ERROR_INVALID_CLASS; |
| 238 } | |
| 239 | |
| 240 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 241 return JVMTI_ERROR_UNMODIFIABLE_CLASS; | |
| 242 } | |
| 243 | |
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244 Klass* k_oop = java_lang_Class::as_Klass(k_mirror); |
| 0 | 245 KlassHandle klass(current_thread, k_oop); |
| 246 | |
| 247 jint status = klass->jvmti_class_status(); | |
| 248 if (status & (JVMTI_CLASS_STATUS_ERROR)) { | |
| 249 return JVMTI_ERROR_INVALID_CLASS; | |
| 250 } | |
| 251 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { | |
| 252 return JVMTI_ERROR_UNMODIFIABLE_CLASS; | |
| 253 } | |
| 254 | |
| 255 instanceKlassHandle ikh(current_thread, k_oop); | |
| 256 if (ikh->get_cached_class_file_bytes() == NULL) { | |
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257 // Not cached, we need to reconstitute the class file from the |
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258 // VM representation. We don't attach the reconstituted class |
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259 // bytes to the InstanceKlass here because they have not been |
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260 // validated and we're not at a safepoint. |
| 0 | 261 constantPoolHandle constants(current_thread, ikh->constants()); |
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262 MonitorLockerEx ml(constants->lock()); // lock constant pool while we query it |
| 0 | 263 |
| 264 JvmtiClassFileReconstituter reconstituter(ikh); | |
| 265 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
| 266 return reconstituter.get_error(); | |
| 267 } | |
| 268 | |
| 269 class_definitions[index].class_byte_count = (jint)reconstituter.class_file_size(); | |
| 270 class_definitions[index].class_bytes = (unsigned char*) | |
| 271 reconstituter.class_file_bytes(); | |
| 272 } else { | |
| 273 // it is cached, get it from the cache | |
| 274 class_definitions[index].class_byte_count = ikh->get_cached_class_file_len(); | |
| 275 class_definitions[index].class_bytes = ikh->get_cached_class_file_bytes(); | |
| 276 } | |
| 277 class_definitions[index].klass = jcls; | |
| 278 } | |
| 279 VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_retransform); | |
| 280 VMThread::execute(&op); | |
| 281 return (op.check_error()); | |
| 282 } /* end RetransformClasses */ | |
| 283 | |
| 284 | |
| 285 // class_count - pre-checked to be greater than or equal to 0 | |
| 286 // class_definitions - pre-checked for NULL | |
| 287 jvmtiError | |
| 288 JvmtiEnv::RedefineClasses(jint class_count, const jvmtiClassDefinition* class_definitions) { | |
| 289 //TODO: add locking | |
| 290 VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_redefine); | |
| 291 VMThread::execute(&op); | |
| 292 return (op.check_error()); | |
| 293 } /* end RedefineClasses */ | |
| 294 | |
| 295 | |
| 296 // | |
| 297 // Object functions | |
| 298 // | |
| 299 | |
| 300 // size_ptr - pre-checked for NULL | |
| 301 jvmtiError | |
| 302 JvmtiEnv::GetObjectSize(jobject object, jlong* size_ptr) { | |
| 303 oop mirror = JNIHandles::resolve_external_guard(object); | |
| 304 NULL_CHECK(mirror, JVMTI_ERROR_INVALID_OBJECT); | |
| 305 | |
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306 if (mirror->klass() == SystemDictionary::Class_klass() && |
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307 !java_lang_Class::is_primitive(mirror)) { |
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308 Klass* k = java_lang_Class::as_Klass(mirror); |
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309 assert(k != NULL, "class for non-primitive mirror must exist"); |
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310 *size_ptr = k->size() * wordSize; |
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311 } else { |
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312 *size_ptr = mirror->size() * wordSize; |
| 0 | 313 } |
| 314 return JVMTI_ERROR_NONE; | |
| 315 } /* end GetObjectSize */ | |
| 316 | |
| 317 // | |
| 318 // Method functions | |
| 319 // | |
| 320 | |
| 321 // prefix - NULL is a valid value, must be checked | |
| 322 jvmtiError | |
| 323 JvmtiEnv::SetNativeMethodPrefix(const char* prefix) { | |
| 324 return prefix == NULL? | |
| 325 SetNativeMethodPrefixes(0, NULL) : | |
| 326 SetNativeMethodPrefixes(1, (char**)&prefix); | |
| 327 } /* end SetNativeMethodPrefix */ | |
| 328 | |
| 329 | |
| 330 // prefix_count - pre-checked to be greater than or equal to 0 | |
| 331 // prefixes - pre-checked for NULL | |
| 332 jvmtiError | |
| 333 JvmtiEnv::SetNativeMethodPrefixes(jint prefix_count, char** prefixes) { | |
| 334 // Have to grab JVMTI thread state lock to be sure that some thread | |
| 335 // isn't accessing the prefixes at the same time we are setting them. | |
| 336 // No locks during VM bring-up. | |
| 337 if (Threads::number_of_threads() == 0) { | |
| 338 return set_native_method_prefixes(prefix_count, prefixes); | |
| 339 } else { | |
| 340 MutexLocker mu(JvmtiThreadState_lock); | |
| 341 return set_native_method_prefixes(prefix_count, prefixes); | |
| 342 } | |
| 343 } /* end SetNativeMethodPrefixes */ | |
| 344 | |
| 345 // | |
| 346 // Event Management functions | |
| 347 // | |
| 348 | |
| 349 // callbacks - NULL is a valid value, must be checked | |
| 350 // size_of_callbacks - pre-checked to be greater than or equal to 0 | |
| 351 jvmtiError | |
| 352 JvmtiEnv::SetEventCallbacks(const jvmtiEventCallbacks* callbacks, jint size_of_callbacks) { | |
| 353 JvmtiEventController::set_event_callbacks(this, callbacks, size_of_callbacks); | |
| 354 return JVMTI_ERROR_NONE; | |
| 355 } /* end SetEventCallbacks */ | |
| 356 | |
| 357 | |
| 358 // event_thread - NULL is a valid value, must be checked | |
| 359 jvmtiError | |
| 360 JvmtiEnv::SetEventNotificationMode(jvmtiEventMode mode, jvmtiEvent event_type, jthread event_thread, ...) { | |
| 361 JavaThread* java_thread = NULL; | |
| 362 if (event_thread != NULL) { | |
| 363 oop thread_oop = JNIHandles::resolve_external_guard(event_thread); | |
| 364 if (thread_oop == NULL) { | |
| 365 return JVMTI_ERROR_INVALID_THREAD; | |
| 366 } | |
| 1142 | 367 if (!thread_oop->is_a(SystemDictionary::Thread_klass())) { |
| 0 | 368 return JVMTI_ERROR_INVALID_THREAD; |
| 369 } | |
| 370 java_thread = java_lang_Thread::thread(thread_oop); | |
| 371 if (java_thread == NULL) { | |
| 372 return JVMTI_ERROR_THREAD_NOT_ALIVE; | |
| 373 } | |
| 374 } | |
| 375 | |
| 376 // event_type must be valid | |
| 377 if (!JvmtiEventController::is_valid_event_type(event_type)) { | |
| 378 return JVMTI_ERROR_INVALID_EVENT_TYPE; | |
| 379 } | |
| 380 | |
| 381 // global events cannot be controlled at thread level. | |
| 382 if (java_thread != NULL && JvmtiEventController::is_global_event(event_type)) { | |
| 383 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
| 384 } | |
| 385 | |
| 386 bool enabled = (mode == JVMTI_ENABLE); | |
| 387 | |
| 388 // assure that needed capabilities are present | |
| 389 if (enabled && !JvmtiUtil::has_event_capability(event_type, get_capabilities())) { | |
| 390 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; | |
| 391 } | |
| 392 | |
| 393 if (event_type == JVMTI_EVENT_CLASS_FILE_LOAD_HOOK && enabled) { | |
| 394 record_class_file_load_hook_enabled(); | |
| 395 } | |
| 396 JvmtiEventController::set_user_enabled(this, java_thread, event_type, enabled); | |
| 397 | |
| 398 return JVMTI_ERROR_NONE; | |
| 399 } /* end SetEventNotificationMode */ | |
| 400 | |
| 401 // | |
| 402 // Capability functions | |
| 403 // | |
| 404 | |
| 405 // capabilities_ptr - pre-checked for NULL | |
| 406 jvmtiError | |
| 407 JvmtiEnv::GetPotentialCapabilities(jvmtiCapabilities* capabilities_ptr) { | |
| 408 JvmtiManageCapabilities::get_potential_capabilities(get_capabilities(), | |
| 409 get_prohibited_capabilities(), | |
| 410 capabilities_ptr); | |
| 411 return JVMTI_ERROR_NONE; | |
| 412 } /* end GetPotentialCapabilities */ | |
| 413 | |
| 414 | |
| 415 // capabilities_ptr - pre-checked for NULL | |
| 416 jvmtiError | |
| 417 JvmtiEnv::AddCapabilities(const jvmtiCapabilities* capabilities_ptr) { | |
| 418 return JvmtiManageCapabilities::add_capabilities(get_capabilities(), | |
| 419 get_prohibited_capabilities(), | |
| 420 capabilities_ptr, | |
| 421 get_capabilities()); | |
| 422 } /* end AddCapabilities */ | |
| 423 | |
| 424 | |
| 425 // capabilities_ptr - pre-checked for NULL | |
| 426 jvmtiError | |
| 427 JvmtiEnv::RelinquishCapabilities(const jvmtiCapabilities* capabilities_ptr) { | |
| 428 JvmtiManageCapabilities::relinquish_capabilities(get_capabilities(), capabilities_ptr, get_capabilities()); | |
| 429 return JVMTI_ERROR_NONE; | |
| 430 } /* end RelinquishCapabilities */ | |
| 431 | |
| 432 | |
| 433 // capabilities_ptr - pre-checked for NULL | |
| 434 jvmtiError | |
| 435 JvmtiEnv::GetCapabilities(jvmtiCapabilities* capabilities_ptr) { | |
| 436 JvmtiManageCapabilities::copy_capabilities(get_capabilities(), capabilities_ptr); | |
| 437 return JVMTI_ERROR_NONE; | |
| 438 } /* end GetCapabilities */ | |
| 439 | |
| 440 // | |
| 441 // Class Loader Search functions | |
| 442 // | |
| 443 | |
| 444 // segment - pre-checked for NULL | |
| 445 jvmtiError | |
| 446 JvmtiEnv::AddToBootstrapClassLoaderSearch(const char* segment) { | |
| 447 jvmtiPhase phase = get_phase(); | |
| 448 if (phase == JVMTI_PHASE_ONLOAD) { | |
| 449 Arguments::append_sysclasspath(segment); | |
| 450 return JVMTI_ERROR_NONE; | |
| 1121 | 451 } else if (use_version_1_0_semantics()) { |
| 452 // This JvmtiEnv requested version 1.0 semantics and this function | |
| 453 // is only allowed in the ONLOAD phase in version 1.0 so we need to | |
| 454 // return an error here. | |
| 455 return JVMTI_ERROR_WRONG_PHASE; | |
|
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456 } else if (phase == JVMTI_PHASE_LIVE) { |
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457 // The phase is checked by the wrapper that called this function, |
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458 // but this thread could be racing with the thread that is |
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459 // terminating the VM so we check one more time. |
| 0 | 460 |
| 461 // create the zip entry | |
| 462 ClassPathZipEntry* zip_entry = ClassLoader::create_class_path_zip_entry(segment); | |
| 463 if (zip_entry == NULL) { | |
| 464 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
| 465 } | |
| 466 | |
| 467 // lock the loader | |
| 468 Thread* thread = Thread::current(); | |
| 469 HandleMark hm; | |
| 470 Handle loader_lock = Handle(thread, SystemDictionary::system_loader_lock()); | |
| 471 | |
| 472 ObjectLocker ol(loader_lock, thread); | |
| 473 | |
| 474 // add the jar file to the bootclasspath | |
| 475 if (TraceClassLoading) { | |
| 476 tty->print_cr("[Opened %s]", zip_entry->name()); | |
| 477 } | |
| 478 ClassLoader::add_to_list(zip_entry); | |
| 479 return JVMTI_ERROR_NONE; | |
|
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480 } else { |
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481 return JVMTI_ERROR_WRONG_PHASE; |
| 0 | 482 } |
| 483 | |
| 484 } /* end AddToBootstrapClassLoaderSearch */ | |
| 485 | |
| 486 | |
| 487 // segment - pre-checked for NULL | |
| 488 jvmtiError | |
| 489 JvmtiEnv::AddToSystemClassLoaderSearch(const char* segment) { | |
| 490 jvmtiPhase phase = get_phase(); | |
| 491 | |
| 492 if (phase == JVMTI_PHASE_ONLOAD) { | |
| 493 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
| 494 if (strcmp("java.class.path", p->key()) == 0) { | |
| 495 p->append_value(segment); | |
| 496 break; | |
| 497 } | |
| 498 } | |
| 499 return JVMTI_ERROR_NONE; | |
|
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500 } else if (phase == JVMTI_PHASE_LIVE) { |
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501 // The phase is checked by the wrapper that called this function, |
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502 // but this thread could be racing with the thread that is |
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503 // terminating the VM so we check one more time. |
| 0 | 504 HandleMark hm; |
| 505 | |
| 506 // create the zip entry (which will open the zip file and hence | |
| 507 // check that the segment is indeed a zip file). | |
| 508 ClassPathZipEntry* zip_entry = ClassLoader::create_class_path_zip_entry(segment); | |
| 509 if (zip_entry == NULL) { | |
| 510 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
| 511 } | |
| 512 delete zip_entry; // no longer needed | |
| 513 | |
| 514 // lock the loader | |
| 515 Thread* THREAD = Thread::current(); | |
| 516 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); | |
| 517 | |
| 518 ObjectLocker ol(loader, THREAD); | |
| 519 | |
| 520 // need the path as java.lang.String | |
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521 Handle path = java_lang_String::create_from_platform_dependent_str(segment, THREAD); |
| 0 | 522 if (HAS_PENDING_EXCEPTION) { |
| 523 CLEAR_PENDING_EXCEPTION; | |
| 524 return JVMTI_ERROR_INTERNAL; | |
| 525 } | |
| 526 | |
| 527 instanceKlassHandle loader_ik(THREAD, loader->klass()); | |
| 528 | |
| 529 // Invoke the appendToClassPathForInstrumentation method - if the method | |
| 530 // is not found it means the loader doesn't support adding to the class path | |
| 531 // in the live phase. | |
| 532 { | |
| 533 JavaValue res(T_VOID); | |
| 534 JavaCalls::call_special(&res, | |
| 535 loader, | |
| 536 loader_ik, | |
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537 vmSymbols::appendToClassPathForInstrumentation_name(), |
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538 vmSymbols::appendToClassPathForInstrumentation_signature(), |
| 0 | 539 path, |
| 540 THREAD); | |
| 541 if (HAS_PENDING_EXCEPTION) { | |
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542 Symbol* ex_name = PENDING_EXCEPTION->klass()->name(); |
| 0 | 543 CLEAR_PENDING_EXCEPTION; |
| 544 | |
| 545 if (ex_name == vmSymbols::java_lang_NoSuchMethodError()) { | |
| 546 return JVMTI_ERROR_CLASS_LOADER_UNSUPPORTED; | |
| 547 } else { | |
| 548 return JVMTI_ERROR_INTERNAL; | |
| 549 } | |
| 550 } | |
| 551 } | |
| 552 | |
| 553 return JVMTI_ERROR_NONE; | |
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554 } else { |
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555 return JVMTI_ERROR_WRONG_PHASE; |
| 0 | 556 } |
| 557 } /* end AddToSystemClassLoaderSearch */ | |
| 558 | |
| 559 // | |
| 560 // General functions | |
| 561 // | |
| 562 | |
| 563 // phase_ptr - pre-checked for NULL | |
| 564 jvmtiError | |
| 565 JvmtiEnv::GetPhase(jvmtiPhase* phase_ptr) { | |
| 566 *phase_ptr = get_phase(); | |
| 567 return JVMTI_ERROR_NONE; | |
| 568 } /* end GetPhase */ | |
| 569 | |
| 570 | |
| 571 jvmtiError | |
| 572 JvmtiEnv::DisposeEnvironment() { | |
| 573 dispose(); | |
| 574 return JVMTI_ERROR_NONE; | |
| 575 } /* end DisposeEnvironment */ | |
| 576 | |
| 577 | |
| 578 // data - NULL is a valid value, must be checked | |
| 579 jvmtiError | |
| 580 JvmtiEnv::SetEnvironmentLocalStorage(const void* data) { | |
| 581 set_env_local_storage(data); | |
| 582 return JVMTI_ERROR_NONE; | |
| 583 } /* end SetEnvironmentLocalStorage */ | |
| 584 | |
| 585 | |
| 586 // data_ptr - pre-checked for NULL | |
| 587 jvmtiError | |
| 588 JvmtiEnv::GetEnvironmentLocalStorage(void** data_ptr) { | |
| 589 *data_ptr = (void*)get_env_local_storage(); | |
| 590 return JVMTI_ERROR_NONE; | |
| 591 } /* end GetEnvironmentLocalStorage */ | |
| 592 | |
| 593 // version_ptr - pre-checked for NULL | |
| 594 jvmtiError | |
| 595 JvmtiEnv::GetVersionNumber(jint* version_ptr) { | |
| 596 *version_ptr = JVMTI_VERSION; | |
| 597 return JVMTI_ERROR_NONE; | |
| 598 } /* end GetVersionNumber */ | |
| 599 | |
| 600 | |
| 601 // name_ptr - pre-checked for NULL | |
| 602 jvmtiError | |
| 603 JvmtiEnv::GetErrorName(jvmtiError error, char** name_ptr) { | |
| 604 if (error < JVMTI_ERROR_NONE || error > JVMTI_ERROR_MAX) { | |
| 605 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
| 606 } | |
| 607 const char *name = JvmtiUtil::error_name(error); | |
| 608 if (name == NULL) { | |
| 609 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
| 610 } | |
| 611 size_t len = strlen(name) + 1; | |
| 612 jvmtiError err = allocate(len, (unsigned char**)name_ptr); | |
| 613 if (err == JVMTI_ERROR_NONE) { | |
| 614 memcpy(*name_ptr, name, len); | |
| 615 } | |
| 616 return err; | |
| 617 } /* end GetErrorName */ | |
| 618 | |
| 619 | |
| 620 jvmtiError | |
| 621 JvmtiEnv::SetVerboseFlag(jvmtiVerboseFlag flag, jboolean value) { | |
| 622 switch (flag) { | |
| 623 case JVMTI_VERBOSE_OTHER: | |
| 624 // ignore | |
| 625 break; | |
| 626 case JVMTI_VERBOSE_CLASS: | |
| 627 TraceClassLoading = value != 0; | |
| 628 TraceClassUnloading = value != 0; | |
| 629 break; | |
| 630 case JVMTI_VERBOSE_GC: | |
| 631 PrintGC = value != 0; | |
| 632 break; | |
| 633 case JVMTI_VERBOSE_JNI: | |
| 634 PrintJNIResolving = value != 0; | |
| 635 break; | |
| 636 default: | |
| 637 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
| 638 }; | |
| 639 return JVMTI_ERROR_NONE; | |
| 640 } /* end SetVerboseFlag */ | |
| 641 | |
| 642 | |
| 643 // format_ptr - pre-checked for NULL | |
| 644 jvmtiError | |
| 645 JvmtiEnv::GetJLocationFormat(jvmtiJlocationFormat* format_ptr) { | |
| 646 *format_ptr = JVMTI_JLOCATION_JVMBCI; | |
| 647 return JVMTI_ERROR_NONE; | |
| 648 } /* end GetJLocationFormat */ | |
| 649 | |
| 650 // | |
| 651 // Thread functions | |
| 652 // | |
| 653 | |
| 654 // Threads_lock NOT held | |
| 655 // thread - NOT pre-checked | |
| 656 // thread_state_ptr - pre-checked for NULL | |
| 657 jvmtiError | |
| 658 JvmtiEnv::GetThreadState(jthread thread, jint* thread_state_ptr) { | |
| 659 jint state; | |
| 660 oop thread_oop; | |
| 661 JavaThread* thr; | |
| 662 | |
| 663 if (thread == NULL) { | |
| 664 thread_oop = JavaThread::current()->threadObj(); | |
| 665 } else { | |
| 666 thread_oop = JNIHandles::resolve_external_guard(thread); | |
| 667 } | |
| 668 | |
| 1142 | 669 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) { |
| 0 | 670 return JVMTI_ERROR_INVALID_THREAD; |
| 671 } | |
| 672 | |
| 673 // get most state bits | |
| 674 state = (jint)java_lang_Thread::get_thread_status(thread_oop); | |
| 675 | |
| 676 // add more state bits | |
| 677 thr = java_lang_Thread::thread(thread_oop); | |
| 678 if (thr != NULL) { | |
| 679 JavaThreadState jts = thr->thread_state(); | |
| 680 | |
| 681 if (thr->is_being_ext_suspended()) { | |
| 682 state |= JVMTI_THREAD_STATE_SUSPENDED; | |
| 683 } | |
| 684 if (jts == _thread_in_native) { | |
| 685 state |= JVMTI_THREAD_STATE_IN_NATIVE; | |
| 686 } | |
| 687 OSThread* osThread = thr->osthread(); | |
| 688 if (osThread != NULL && osThread->interrupted()) { | |
| 689 state |= JVMTI_THREAD_STATE_INTERRUPTED; | |
| 690 } | |
| 691 } | |
| 692 | |
| 693 *thread_state_ptr = state; | |
| 694 return JVMTI_ERROR_NONE; | |
| 695 } /* end GetThreadState */ | |
| 696 | |
| 697 | |
| 698 // thread_ptr - pre-checked for NULL | |
| 699 jvmtiError | |
| 700 JvmtiEnv::GetCurrentThread(jthread* thread_ptr) { | |
| 701 JavaThread* current_thread = JavaThread::current(); | |
| 702 *thread_ptr = (jthread)JNIHandles::make_local(current_thread, current_thread->threadObj()); | |
| 703 return JVMTI_ERROR_NONE; | |
| 704 } /* end GetCurrentThread */ | |
| 705 | |
| 706 | |
| 707 // threads_count_ptr - pre-checked for NULL | |
| 708 // threads_ptr - pre-checked for NULL | |
| 709 jvmtiError | |
| 710 JvmtiEnv::GetAllThreads(jint* threads_count_ptr, jthread** threads_ptr) { | |
| 711 int nthreads = 0; | |
| 712 Handle *thread_objs = NULL; | |
| 713 ResourceMark rm; | |
| 714 HandleMark hm; | |
| 715 | |
| 716 // enumerate threads (including agent threads) | |
| 717 ThreadsListEnumerator tle(Thread::current(), true); | |
| 718 nthreads = tle.num_threads(); | |
| 719 *threads_count_ptr = nthreads; | |
| 720 | |
| 721 if (nthreads == 0) { | |
| 722 *threads_ptr = NULL; | |
| 723 return JVMTI_ERROR_NONE; | |
| 724 } | |
| 725 | |
| 726 thread_objs = NEW_RESOURCE_ARRAY(Handle, nthreads); | |
| 727 NULL_CHECK(thread_objs, JVMTI_ERROR_OUT_OF_MEMORY); | |
| 728 | |
| 729 for (int i=0; i < nthreads; i++) { | |
| 730 thread_objs[i] = Handle(tle.get_threadObj(i)); | |
| 731 } | |
| 732 | |
| 733 // have to make global handles outside of Threads_lock | |
| 734 jthread *jthreads = new_jthreadArray(nthreads, thread_objs); | |
| 735 NULL_CHECK(jthreads, JVMTI_ERROR_OUT_OF_MEMORY); | |
| 736 | |
| 737 *threads_ptr = jthreads; | |
| 738 return JVMTI_ERROR_NONE; | |
| 739 } /* end GetAllThreads */ | |
| 740 | |
| 741 | |
| 742 // Threads_lock NOT held, java_thread not protected by lock | |
| 743 // java_thread - pre-checked | |
| 744 jvmtiError | |
| 745 JvmtiEnv::SuspendThread(JavaThread* java_thread) { | |
| 746 // don't allow hidden thread suspend request. | |
| 747 if (java_thread->is_hidden_from_external_view()) { | |
| 748 return (JVMTI_ERROR_NONE); | |
| 749 } | |
| 750 | |
| 751 { | |
| 752 MutexLockerEx ml(java_thread->SR_lock(), Mutex::_no_safepoint_check_flag); | |
| 753 if (java_thread->is_external_suspend()) { | |
| 754 // don't allow nested external suspend requests. | |
| 755 return (JVMTI_ERROR_THREAD_SUSPENDED); | |
| 756 } | |
| 757 if (java_thread->is_exiting()) { // thread is in the process of exiting | |
| 758 return (JVMTI_ERROR_THREAD_NOT_ALIVE); | |
| 759 } | |
| 760 java_thread->set_external_suspend(); | |
| 761 } | |
| 762 | |
| 763 if (!JvmtiSuspendControl::suspend(java_thread)) { | |
| 764 // the thread was in the process of exiting | |
| 765 return (JVMTI_ERROR_THREAD_NOT_ALIVE); | |
| 766 } | |
| 767 return JVMTI_ERROR_NONE; | |
| 768 } /* end SuspendThread */ | |
| 769 | |
| 770 | |
| 771 // request_count - pre-checked to be greater than or equal to 0 | |
| 772 // request_list - pre-checked for NULL | |
| 773 // results - pre-checked for NULL | |
| 774 jvmtiError | |
| 775 JvmtiEnv::SuspendThreadList(jint request_count, const jthread* request_list, jvmtiError* results) { | |
| 776 int needSafepoint = 0; // > 0 if we need a safepoint | |
| 777 for (int i = 0; i < request_count; i++) { | |
| 778 JavaThread *java_thread = get_JavaThread(request_list[i]); | |
| 779 if (java_thread == NULL) { | |
| 780 results[i] = JVMTI_ERROR_INVALID_THREAD; | |
| 781 continue; | |
| 782 } | |
| 783 // the thread has not yet run or has exited (not on threads list) | |
| 784 if (java_thread->threadObj() == NULL) { | |
| 785 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
| 786 continue; | |
| 787 } | |
| 788 if (java_lang_Thread::thread(java_thread->threadObj()) == NULL) { | |
| 789 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
| 790 continue; | |
| 791 } | |
| 792 // don't allow hidden thread suspend request. | |
| 793 if (java_thread->is_hidden_from_external_view()) { | |
| 794 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend | |
| 795 continue; | |
| 796 } | |
| 797 | |
| 798 { | |
| 799 MutexLockerEx ml(java_thread->SR_lock(), Mutex::_no_safepoint_check_flag); | |
| 800 if (java_thread->is_external_suspend()) { | |
| 801 // don't allow nested external suspend requests. | |
| 802 results[i] = JVMTI_ERROR_THREAD_SUSPENDED; | |
| 803 continue; | |
| 804 } | |
| 805 if (java_thread->is_exiting()) { // thread is in the process of exiting | |
| 806 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
| 807 continue; | |
| 808 } | |
| 809 java_thread->set_external_suspend(); | |
| 810 } | |
| 811 if (java_thread->thread_state() == _thread_in_native) { | |
| 812 // We need to try and suspend native threads here. Threads in | |
| 813 // other states will self-suspend on their next transition. | |
| 814 if (!JvmtiSuspendControl::suspend(java_thread)) { | |
| 815 // The thread was in the process of exiting. Force another | |
| 816 // safepoint to make sure that this thread transitions. | |
| 817 needSafepoint++; | |
| 818 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
| 819 continue; | |
| 820 } | |
| 821 } else { | |
| 822 needSafepoint++; | |
| 823 } | |
| 824 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend | |
| 825 } | |
| 826 if (needSafepoint > 0) { | |
| 827 VM_ForceSafepoint vfs; | |
| 828 VMThread::execute(&vfs); | |
| 829 } | |
| 830 // per-thread suspend results returned via results parameter | |
| 831 return JVMTI_ERROR_NONE; | |
| 832 } /* end SuspendThreadList */ | |
| 833 | |
| 834 | |
| 835 // Threads_lock NOT held, java_thread not protected by lock | |
| 836 // java_thread - pre-checked | |
| 837 jvmtiError | |
| 838 JvmtiEnv::ResumeThread(JavaThread* java_thread) { | |
| 839 // don't allow hidden thread resume request. | |
| 840 if (java_thread->is_hidden_from_external_view()) { | |
| 841 return JVMTI_ERROR_NONE; | |
| 842 } | |
| 843 | |
| 844 if (!java_thread->is_being_ext_suspended()) { | |
| 845 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
| 846 } | |
| 847 | |
| 848 if (!JvmtiSuspendControl::resume(java_thread)) { | |
| 849 return JVMTI_ERROR_INTERNAL; | |
| 850 } | |
| 851 return JVMTI_ERROR_NONE; | |
| 852 } /* end ResumeThread */ | |
| 853 | |
| 854 | |
| 855 // request_count - pre-checked to be greater than or equal to 0 | |
| 856 // request_list - pre-checked for NULL | |
| 857 // results - pre-checked for NULL | |
| 858 jvmtiError | |
| 859 JvmtiEnv::ResumeThreadList(jint request_count, const jthread* request_list, jvmtiError* results) { | |
| 860 for (int i = 0; i < request_count; i++) { | |
| 861 JavaThread *java_thread = get_JavaThread(request_list[i]); | |
| 862 if (java_thread == NULL) { | |
| 863 results[i] = JVMTI_ERROR_INVALID_THREAD; | |
| 864 continue; | |
| 865 } | |
| 866 // don't allow hidden thread resume request. | |
| 867 if (java_thread->is_hidden_from_external_view()) { | |
| 868 results[i] = JVMTI_ERROR_NONE; // indicate successful resume | |
| 869 continue; | |
| 870 } | |
| 871 if (!java_thread->is_being_ext_suspended()) { | |
| 872 results[i] = JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
| 873 continue; | |
| 874 } | |
| 875 | |
| 876 if (!JvmtiSuspendControl::resume(java_thread)) { | |
| 877 results[i] = JVMTI_ERROR_INTERNAL; | |
| 878 continue; | |
| 879 } | |
| 880 | |
| 881 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend | |
| 882 } | |
| 883 // per-thread resume results returned via results parameter | |
| 884 return JVMTI_ERROR_NONE; | |
| 885 } /* end ResumeThreadList */ | |
| 886 | |
| 887 | |
| 888 // Threads_lock NOT held, java_thread not protected by lock | |
| 889 // java_thread - pre-checked | |
| 890 jvmtiError | |
| 891 JvmtiEnv::StopThread(JavaThread* java_thread, jobject exception) { | |
| 892 oop e = JNIHandles::resolve_external_guard(exception); | |
| 893 NULL_CHECK(e, JVMTI_ERROR_NULL_POINTER); | |
| 894 | |
| 895 JavaThread::send_async_exception(java_thread->threadObj(), e); | |
| 896 | |
| 897 return JVMTI_ERROR_NONE; | |
| 898 | |
| 899 } /* end StopThread */ | |
| 900 | |
| 901 | |
| 902 // Threads_lock NOT held | |
| 903 // thread - NOT pre-checked | |
| 904 jvmtiError | |
| 905 JvmtiEnv::InterruptThread(jthread thread) { | |
| 906 oop thread_oop = JNIHandles::resolve_external_guard(thread); | |
| 1142 | 907 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) |
| 0 | 908 return JVMTI_ERROR_INVALID_THREAD; |
| 909 | |
| 910 JavaThread* current_thread = JavaThread::current(); | |
| 911 | |
| 912 // Todo: this is a duplicate of JVM_Interrupt; share code in future | |
| 913 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 914 MutexLockerEx ml(current_thread->threadObj() == thread_oop ? NULL : Threads_lock); | |
| 915 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 916 // acquire of the lock | |
| 917 | |
| 918 JavaThread* java_thread = java_lang_Thread::thread(JNIHandles::resolve_external_guard(thread)); | |
| 919 NULL_CHECK(java_thread, JVMTI_ERROR_THREAD_NOT_ALIVE); | |
| 920 | |
| 921 Thread::interrupt(java_thread); | |
| 922 | |
| 923 return JVMTI_ERROR_NONE; | |
| 924 } /* end InterruptThread */ | |
| 925 | |
| 926 | |
| 927 // Threads_lock NOT held | |
| 928 // thread - NOT pre-checked | |
| 929 // info_ptr - pre-checked for NULL | |
| 930 jvmtiError | |
| 931 JvmtiEnv::GetThreadInfo(jthread thread, jvmtiThreadInfo* info_ptr) { | |
| 932 ResourceMark rm; | |
| 933 HandleMark hm; | |
| 934 | |
| 935 JavaThread* current_thread = JavaThread::current(); | |
| 936 | |
| 937 // if thread is NULL the current thread is used | |
| 938 oop thread_oop; | |
| 939 if (thread == NULL) { | |
| 940 thread_oop = current_thread->threadObj(); | |
| 941 } else { | |
| 942 thread_oop = JNIHandles::resolve_external_guard(thread); | |
| 943 } | |
| 1142 | 944 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) |
| 0 | 945 return JVMTI_ERROR_INVALID_THREAD; |
| 946 | |
| 947 Handle thread_obj(current_thread, thread_oop); | |
| 948 typeArrayHandle name; | |
| 949 ThreadPriority priority; | |
| 950 Handle thread_group; | |
| 951 Handle context_class_loader; | |
| 952 bool is_daemon; | |
| 953 | |
| 954 { MutexLocker mu(Threads_lock); | |
| 955 | |
| 956 name = typeArrayHandle(current_thread, java_lang_Thread::name(thread_obj())); | |
| 957 priority = java_lang_Thread::priority(thread_obj()); | |
| 958 thread_group = Handle(current_thread, java_lang_Thread::threadGroup(thread_obj())); | |
| 959 is_daemon = java_lang_Thread::is_daemon(thread_obj()); | |
| 960 | |
| 961 oop loader = java_lang_Thread::context_class_loader(thread_obj()); | |
| 962 context_class_loader = Handle(current_thread, loader); | |
| 963 } | |
| 964 { const char *n; | |
| 965 | |
| 966 if (name() != NULL) { | |
| 967 n = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length()); | |
| 968 } else { | |
| 969 n = UNICODE::as_utf8(NULL, 0); | |
| 970 } | |
| 971 | |
| 972 info_ptr->name = (char *) jvmtiMalloc(strlen(n)+1); | |
| 973 if (info_ptr->name == NULL) | |
| 974 return JVMTI_ERROR_OUT_OF_MEMORY; | |
| 975 | |
| 976 strcpy(info_ptr->name, n); | |
| 977 } | |
| 978 info_ptr->is_daemon = is_daemon; | |
| 979 info_ptr->priority = priority; | |
| 980 | |
| 981 info_ptr->context_class_loader = (context_class_loader.is_null()) ? NULL : | |
| 982 jni_reference(context_class_loader); | |
| 983 info_ptr->thread_group = jni_reference(thread_group); | |
| 984 | |
| 985 return JVMTI_ERROR_NONE; | |
| 986 } /* end GetThreadInfo */ | |
| 987 | |
| 988 | |
| 989 // Threads_lock NOT held, java_thread not protected by lock | |
| 990 // java_thread - pre-checked | |
| 991 // owned_monitor_count_ptr - pre-checked for NULL | |
| 992 // owned_monitors_ptr - pre-checked for NULL | |
| 993 jvmtiError | |
| 994 JvmtiEnv::GetOwnedMonitorInfo(JavaThread* java_thread, jint* owned_monitor_count_ptr, jobject** owned_monitors_ptr) { | |
| 995 jvmtiError err = JVMTI_ERROR_NONE; | |
| 996 JavaThread* calling_thread = JavaThread::current(); | |
| 997 | |
| 998 // growable array of jvmti monitors info on the C-heap | |
| 999 GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list = | |
| 6197 | 1000 new (ResourceObj::C_HEAP, mtInternal) GrowableArray<jvmtiMonitorStackDepthInfo*>(1, true); |
| 0 | 1001 |
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1002 // It is only safe to perform the direct operation on the current |
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1003 // thread. All other usage needs to use a vm-safepoint-op for safety. |
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1004 if (java_thread == calling_thread) { |
| 0 | 1005 err = get_owned_monitors(calling_thread, java_thread, owned_monitors_list); |
| 1006 } else { | |
| 1007 // JVMTI get monitors info at safepoint. Do not require target thread to | |
| 1008 // be suspended. | |
| 1009 VM_GetOwnedMonitorInfo op(this, calling_thread, java_thread, owned_monitors_list); | |
| 1010 VMThread::execute(&op); | |
| 1011 err = op.result(); | |
| 1012 } | |
| 1013 jint owned_monitor_count = owned_monitors_list->length(); | |
| 1014 if (err == JVMTI_ERROR_NONE) { | |
| 1015 if ((err = allocate(owned_monitor_count * sizeof(jobject *), | |
| 1016 (unsigned char**)owned_monitors_ptr)) == JVMTI_ERROR_NONE) { | |
| 1017 // copy into the returned array | |
| 1018 for (int i = 0; i < owned_monitor_count; i++) { | |
| 1019 (*owned_monitors_ptr)[i] = | |
| 1020 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->monitor; | |
| 1021 } | |
| 1022 *owned_monitor_count_ptr = owned_monitor_count; | |
| 1023 } | |
| 1024 } | |
| 1025 // clean up. | |
| 1026 for (int i = 0; i < owned_monitor_count; i++) { | |
| 1027 deallocate((unsigned char*)owned_monitors_list->at(i)); | |
| 1028 } | |
| 1029 delete owned_monitors_list; | |
| 1030 | |
| 1031 return err; | |
| 1032 } /* end GetOwnedMonitorInfo */ | |
| 1033 | |
| 1034 | |
| 1035 // Threads_lock NOT held, java_thread not protected by lock | |
| 1036 // java_thread - pre-checked | |
| 1037 // monitor_info_count_ptr - pre-checked for NULL | |
| 1038 // monitor_info_ptr - pre-checked for NULL | |
| 1039 jvmtiError | |
| 1040 JvmtiEnv::GetOwnedMonitorStackDepthInfo(JavaThread* java_thread, jint* monitor_info_count_ptr, jvmtiMonitorStackDepthInfo** monitor_info_ptr) { | |
| 1041 jvmtiError err = JVMTI_ERROR_NONE; | |
| 1042 JavaThread* calling_thread = JavaThread::current(); | |
| 1043 | |
| 1044 // growable array of jvmti monitors info on the C-heap | |
| 1045 GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list = | |
| 6197 | 1046 new (ResourceObj::C_HEAP, mtInternal) GrowableArray<jvmtiMonitorStackDepthInfo*>(1, true); |
| 0 | 1047 |
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1048 // It is only safe to perform the direct operation on the current |
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1049 // thread. All other usage needs to use a vm-safepoint-op for safety. |
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1050 if (java_thread == calling_thread) { |
| 0 | 1051 err = get_owned_monitors(calling_thread, java_thread, owned_monitors_list); |
| 1052 } else { | |
| 1053 // JVMTI get owned monitors info at safepoint. Do not require target thread to | |
| 1054 // be suspended. | |
| 1055 VM_GetOwnedMonitorInfo op(this, calling_thread, java_thread, owned_monitors_list); | |
| 1056 VMThread::execute(&op); | |
| 1057 err = op.result(); | |
| 1058 } | |
| 1059 | |
| 1060 jint owned_monitor_count = owned_monitors_list->length(); | |
| 1061 if (err == JVMTI_ERROR_NONE) { | |
| 1062 if ((err = allocate(owned_monitor_count * sizeof(jvmtiMonitorStackDepthInfo), | |
| 1063 (unsigned char**)monitor_info_ptr)) == JVMTI_ERROR_NONE) { | |
| 1064 // copy to output array. | |
| 1065 for (int i = 0; i < owned_monitor_count; i++) { | |
| 1066 (*monitor_info_ptr)[i].monitor = | |
| 1067 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->monitor; | |
| 1068 (*monitor_info_ptr)[i].stack_depth = | |
| 1069 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->stack_depth; | |
| 1070 } | |
| 1071 } | |
| 1072 *monitor_info_count_ptr = owned_monitor_count; | |
| 1073 } | |
| 1074 | |
| 1075 // clean up. | |
| 1076 for (int i = 0; i < owned_monitor_count; i++) { | |
| 1077 deallocate((unsigned char*)owned_monitors_list->at(i)); | |
| 1078 } | |
| 1079 delete owned_monitors_list; | |
| 1080 | |
| 1081 return err; | |
| 1082 } /* end GetOwnedMonitorStackDepthInfo */ | |
| 1083 | |
| 1084 | |
| 1085 // Threads_lock NOT held, java_thread not protected by lock | |
| 1086 // java_thread - pre-checked | |
| 1087 // monitor_ptr - pre-checked for NULL | |
| 1088 jvmtiError | |
| 1089 JvmtiEnv::GetCurrentContendedMonitor(JavaThread* java_thread, jobject* monitor_ptr) { | |
| 1090 jvmtiError err = JVMTI_ERROR_NONE; | |
| 1091 JavaThread* calling_thread = JavaThread::current(); | |
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1092 |
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1093 // It is only safe to perform the direct operation on the current |
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1094 // thread. All other usage needs to use a vm-safepoint-op for safety. |
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1095 if (java_thread == calling_thread) { |
| 0 | 1096 err = get_current_contended_monitor(calling_thread, java_thread, monitor_ptr); |
| 1097 } else { | |
| 1098 // get contended monitor information at safepoint. | |
| 1099 VM_GetCurrentContendedMonitor op(this, calling_thread, java_thread, monitor_ptr); | |
| 1100 VMThread::execute(&op); | |
| 1101 err = op.result(); | |
| 1102 } | |
| 1103 return err; | |
| 1104 } /* end GetCurrentContendedMonitor */ | |
| 1105 | |
| 1106 | |
| 1107 // Threads_lock NOT held | |
| 1108 // thread - NOT pre-checked | |
| 1109 // proc - pre-checked for NULL | |
| 1110 // arg - NULL is a valid value, must be checked | |
| 1111 jvmtiError | |
| 1112 JvmtiEnv::RunAgentThread(jthread thread, jvmtiStartFunction proc, const void* arg, jint priority) { | |
| 1113 oop thread_oop = JNIHandles::resolve_external_guard(thread); | |
| 1142 | 1114 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) { |
| 0 | 1115 return JVMTI_ERROR_INVALID_THREAD; |
| 1116 } | |
| 1117 if (priority < JVMTI_THREAD_MIN_PRIORITY || priority > JVMTI_THREAD_MAX_PRIORITY) { | |
| 1118 return JVMTI_ERROR_INVALID_PRIORITY; | |
| 1119 } | |
| 1120 | |
| 1121 //Thread-self | |
| 1122 JavaThread* current_thread = JavaThread::current(); | |
| 1123 | |
| 1124 Handle thread_hndl(current_thread, thread_oop); | |
| 1125 { | |
| 1126 MutexLocker mu(Threads_lock); // grab Threads_lock | |
| 1127 | |
| 1128 JvmtiAgentThread *new_thread = new JvmtiAgentThread(this, proc, arg); | |
| 1129 | |
| 1130 // At this point it may be possible that no osthread was created for the | |
| 1131 // JavaThread due to lack of memory. | |
| 1132 if (new_thread == NULL || new_thread->osthread() == NULL) { | |
| 1133 if (new_thread) delete new_thread; | |
| 1134 return JVMTI_ERROR_OUT_OF_MEMORY; | |
| 1135 } | |
| 1136 | |
| 1137 java_lang_Thread::set_thread(thread_hndl(), new_thread); | |
| 1138 java_lang_Thread::set_priority(thread_hndl(), (ThreadPriority)priority); | |
| 1139 java_lang_Thread::set_daemon(thread_hndl()); | |
| 1140 | |
| 1141 new_thread->set_threadObj(thread_hndl()); | |
| 1142 Threads::add(new_thread); | |
| 1143 Thread::start(new_thread); | |
| 1144 } // unlock Threads_lock | |
| 1145 | |
| 1146 return JVMTI_ERROR_NONE; | |
| 1147 } /* end RunAgentThread */ | |
| 1148 | |
| 1149 // | |
| 1150 // Thread Group functions | |
| 1151 // | |
| 1152 | |
| 1153 // group_count_ptr - pre-checked for NULL | |
| 1154 // groups_ptr - pre-checked for NULL | |
| 1155 jvmtiError | |
| 1156 JvmtiEnv::GetTopThreadGroups(jint* group_count_ptr, jthreadGroup** groups_ptr) { | |
| 1157 JavaThread* current_thread = JavaThread::current(); | |
| 1158 | |
| 1159 // Only one top level thread group now. | |
| 1160 *group_count_ptr = 1; | |
| 1161 | |
| 1162 // Allocate memory to store global-refs to the thread groups. | |
| 1163 // Assume this area is freed by caller. | |
| 1164 *groups_ptr = (jthreadGroup *) jvmtiMalloc((sizeof(jthreadGroup)) * (*group_count_ptr)); | |
| 1165 | |
| 1166 NULL_CHECK(*groups_ptr, JVMTI_ERROR_OUT_OF_MEMORY); | |
| 1167 | |
| 1168 // Convert oop to Handle, then convert Handle to global-ref. | |
| 1169 { | |
| 1170 HandleMark hm(current_thread); | |
| 1171 Handle system_thread_group(current_thread, Universe::system_thread_group()); | |
| 1172 *groups_ptr[0] = jni_reference(system_thread_group); | |
| 1173 } | |
| 1174 | |
| 1175 return JVMTI_ERROR_NONE; | |
| 1176 } /* end GetTopThreadGroups */ | |
| 1177 | |
| 1178 | |
| 1179 // info_ptr - pre-checked for NULL | |
| 1180 jvmtiError | |
| 1181 JvmtiEnv::GetThreadGroupInfo(jthreadGroup group, jvmtiThreadGroupInfo* info_ptr) { | |
| 1182 ResourceMark rm; | |
| 1183 HandleMark hm; | |
| 1184 | |
| 1185 JavaThread* current_thread = JavaThread::current(); | |
| 1186 | |
| 1187 Handle group_obj (current_thread, JNIHandles::resolve_external_guard(group)); | |
| 1188 NULL_CHECK(group_obj(), JVMTI_ERROR_INVALID_THREAD_GROUP); | |
| 1189 | |
| 1190 typeArrayHandle name; | |
| 1191 Handle parent_group; | |
| 1192 bool is_daemon; | |
| 1193 ThreadPriority max_priority; | |
| 1194 | |
| 1195 { MutexLocker mu(Threads_lock); | |
| 1196 | |
| 1197 name = typeArrayHandle(current_thread, | |
| 1198 java_lang_ThreadGroup::name(group_obj())); | |
| 1199 parent_group = Handle(current_thread, java_lang_ThreadGroup::parent(group_obj())); | |
| 1200 is_daemon = java_lang_ThreadGroup::is_daemon(group_obj()); | |
| 1201 max_priority = java_lang_ThreadGroup::maxPriority(group_obj()); | |
| 1202 } | |
| 1203 | |
| 1204 info_ptr->is_daemon = is_daemon; | |
| 1205 info_ptr->max_priority = max_priority; | |
| 1206 info_ptr->parent = jni_reference(parent_group); | |
| 1207 | |
| 1208 if (name() != NULL) { | |
| 1209 const char* n = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length()); | |
| 1210 info_ptr->name = (char *)jvmtiMalloc(strlen(n)+1); | |
| 1211 NULL_CHECK(info_ptr->name, JVMTI_ERROR_OUT_OF_MEMORY); | |
| 1212 strcpy(info_ptr->name, n); | |
| 1213 } else { | |
| 1214 info_ptr->name = NULL; | |
| 1215 } | |
| 1216 | |
| 1217 return JVMTI_ERROR_NONE; | |
| 1218 } /* end GetThreadGroupInfo */ | |
| 1219 | |
| 1220 | |
| 1221 // thread_count_ptr - pre-checked for NULL | |
| 1222 // threads_ptr - pre-checked for NULL | |
| 1223 // group_count_ptr - pre-checked for NULL | |
| 1224 // groups_ptr - pre-checked for NULL | |
| 1225 jvmtiError | |
| 1226 JvmtiEnv::GetThreadGroupChildren(jthreadGroup group, jint* thread_count_ptr, jthread** threads_ptr, jint* group_count_ptr, jthreadGroup** groups_ptr) { | |
| 1227 JavaThread* current_thread = JavaThread::current(); | |
| 1228 oop group_obj = (oop) JNIHandles::resolve_external_guard(group); | |
| 1229 NULL_CHECK(group_obj, JVMTI_ERROR_INVALID_THREAD_GROUP); | |
| 1230 | |
| 1231 Handle *thread_objs = NULL; | |
| 1232 Handle *group_objs = NULL; | |
| 1233 int nthreads = 0; | |
| 1234 int ngroups = 0; | |
| 1235 int hidden_threads = 0; | |
| 1236 | |
| 1237 ResourceMark rm; | |
| 1238 HandleMark hm; | |
| 1239 | |
| 1240 Handle group_hdl(current_thread, group_obj); | |
| 1241 | |
| 1242 { MutexLocker mu(Threads_lock); | |
| 1243 | |
| 1244 nthreads = java_lang_ThreadGroup::nthreads(group_hdl()); | |
| 1245 ngroups = java_lang_ThreadGroup::ngroups(group_hdl()); | |
| 1246 | |
| 1247 if (nthreads > 0) { | |
| 1248 objArrayOop threads = java_lang_ThreadGroup::threads(group_hdl()); | |
| 1249 assert(nthreads <= threads->length(), "too many threads"); | |
| 1250 thread_objs = NEW_RESOURCE_ARRAY(Handle,nthreads); | |
| 1251 for (int i=0, j=0; i<nthreads; i++) { | |
| 1252 oop thread_obj = threads->obj_at(i); | |
| 1253 assert(thread_obj != NULL, "thread_obj is NULL"); | |
| 1254 JavaThread *javathread = java_lang_Thread::thread(thread_obj); | |
| 1255 // Filter out hidden java threads. | |
| 1256 if (javathread != NULL && javathread->is_hidden_from_external_view()) { | |
| 1257 hidden_threads++; | |
| 1258 continue; | |
| 1259 } | |
| 1260 thread_objs[j++] = Handle(current_thread, thread_obj); | |
| 1261 } | |
| 1262 nthreads -= hidden_threads; | |
| 1263 } | |
| 1264 if (ngroups > 0) { | |
| 1265 objArrayOop groups = java_lang_ThreadGroup::groups(group_hdl()); | |
| 1266 assert(ngroups <= groups->length(), "too many threads"); | |
| 1267 group_objs = NEW_RESOURCE_ARRAY(Handle,ngroups); | |
| 1268 for (int i=0; i<ngroups; i++) { | |
| 1269 oop group_obj = groups->obj_at(i); | |
| 1270 assert(group_obj != NULL, "group_obj != NULL"); | |
| 1271 group_objs[i] = Handle(current_thread, group_obj); | |
| 1272 } | |
| 1273 } | |
| 1274 } | |
| 1275 | |
| 1276 // have to make global handles outside of Threads_lock | |
| 1277 *group_count_ptr = ngroups; | |
| 1278 *thread_count_ptr = nthreads; | |
| 1279 *threads_ptr = new_jthreadArray(nthreads, thread_objs); | |
| 1280 *groups_ptr = new_jthreadGroupArray(ngroups, group_objs); | |
| 1281 if ((nthreads > 0) && (*threads_ptr == NULL)) { | |
| 1282 return JVMTI_ERROR_OUT_OF_MEMORY; | |
| 1283 } | |
| 1284 if ((ngroups > 0) && (*groups_ptr == NULL)) { | |
| 1285 return JVMTI_ERROR_OUT_OF_MEMORY; | |
| 1286 } | |
| 1287 | |
| 1288 return JVMTI_ERROR_NONE; | |
| 1289 } /* end GetThreadGroupChildren */ | |
| 1290 | |
| 1291 | |
| 1292 // | |
| 1293 // Stack Frame functions | |
| 1294 // | |
| 1295 | |
| 1296 // Threads_lock NOT held, java_thread not protected by lock | |
| 1297 // java_thread - pre-checked | |
| 1298 // max_frame_count - pre-checked to be greater than or equal to 0 | |
| 1299 // frame_buffer - pre-checked for NULL | |
| 1300 // count_ptr - pre-checked for NULL | |
| 1301 jvmtiError | |
| 1302 JvmtiEnv::GetStackTrace(JavaThread* java_thread, jint start_depth, jint max_frame_count, jvmtiFrameInfo* frame_buffer, jint* count_ptr) { | |
| 1303 jvmtiError err = JVMTI_ERROR_NONE; | |
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1304 |
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1305 // It is only safe to perform the direct operation on the current |
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1306 // thread. All other usage needs to use a vm-safepoint-op for safety. |
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1307 if (java_thread == JavaThread::current()) { |
| 0 | 1308 err = get_stack_trace(java_thread, start_depth, max_frame_count, frame_buffer, count_ptr); |
| 1309 } else { | |
| 1310 // JVMTI get stack trace at safepoint. Do not require target thread to | |
| 1311 // be suspended. | |
| 1312 VM_GetStackTrace op(this, java_thread, start_depth, max_frame_count, frame_buffer, count_ptr); | |
| 1313 VMThread::execute(&op); | |
| 1314 err = op.result(); | |
| 1315 } | |
| 1316 | |
| 1317 return err; | |
| 1318 } /* end GetStackTrace */ | |
| 1319 | |
| 1320 | |
| 1321 // max_frame_count - pre-checked to be greater than or equal to 0 | |
| 1322 // stack_info_ptr - pre-checked for NULL | |
| 1323 // thread_count_ptr - pre-checked for NULL | |
| 1324 jvmtiError | |
| 1325 JvmtiEnv::GetAllStackTraces(jint max_frame_count, jvmtiStackInfo** stack_info_ptr, jint* thread_count_ptr) { | |
| 1326 jvmtiError err = JVMTI_ERROR_NONE; | |
| 1327 JavaThread* calling_thread = JavaThread::current(); | |
| 1328 | |
| 1329 // JVMTI get stack traces at safepoint. | |
| 1330 VM_GetAllStackTraces op(this, calling_thread, max_frame_count); | |
| 1331 VMThread::execute(&op); | |
| 1332 *thread_count_ptr = op.final_thread_count(); | |
| 1333 *stack_info_ptr = op.stack_info(); | |
| 1334 err = op.result(); | |
| 1335 return err; | |
| 1336 } /* end GetAllStackTraces */ | |
| 1337 | |
| 1338 | |
| 1339 // thread_count - pre-checked to be greater than or equal to 0 | |
| 1340 // thread_list - pre-checked for NULL | |
| 1341 // max_frame_count - pre-checked to be greater than or equal to 0 | |
| 1342 // stack_info_ptr - pre-checked for NULL | |
| 1343 jvmtiError | |
| 1344 JvmtiEnv::GetThreadListStackTraces(jint thread_count, const jthread* thread_list, jint max_frame_count, jvmtiStackInfo** stack_info_ptr) { | |
| 1345 jvmtiError err = JVMTI_ERROR_NONE; | |
| 1346 // JVMTI get stack traces at safepoint. | |
| 1347 VM_GetThreadListStackTraces op(this, thread_count, thread_list, max_frame_count); | |
| 1348 VMThread::execute(&op); | |
| 1349 err = op.result(); | |
| 1350 if (err == JVMTI_ERROR_NONE) { | |
| 1351 *stack_info_ptr = op.stack_info(); | |
| 1352 } | |
| 1353 return err; | |
| 1354 } /* end GetThreadListStackTraces */ | |
| 1355 | |
| 1356 | |
| 1357 // Threads_lock NOT held, java_thread not protected by lock | |
| 1358 // java_thread - pre-checked | |
| 1359 // count_ptr - pre-checked for NULL | |
| 1360 jvmtiError | |
| 1361 JvmtiEnv::GetFrameCount(JavaThread* java_thread, jint* count_ptr) { | |
| 1362 jvmtiError err = JVMTI_ERROR_NONE; | |
| 1363 | |
| 1364 // retrieve or create JvmtiThreadState. | |
| 1365 JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread); | |
|
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1366 if (state == NULL) { |
|
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|
1367 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
|
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|
1368 } |
|
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|
1369 |
|
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|
1370 // It is only safe to perform the direct operation on the current |
|
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|
1371 // thread. All other usage needs to use a vm-safepoint-op for safety. |
|
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|
1372 if (java_thread == JavaThread::current()) { |
| 0 | 1373 err = get_frame_count(state, count_ptr); |
| 1374 } else { | |
| 1375 // get java stack frame count at safepoint. | |
| 1376 VM_GetFrameCount op(this, state, count_ptr); | |
| 1377 VMThread::execute(&op); | |
| 1378 err = op.result(); | |
| 1379 } | |
| 1380 return err; | |
| 1381 } /* end GetFrameCount */ | |
| 1382 | |
| 1383 | |
| 1384 // Threads_lock NOT held, java_thread not protected by lock | |
| 1385 // java_thread - pre-checked | |
| 1386 jvmtiError | |
| 1387 JvmtiEnv::PopFrame(JavaThread* java_thread) { | |
| 1388 JavaThread* current_thread = JavaThread::current(); | |
| 1389 HandleMark hm(current_thread); | |
| 1390 uint32_t debug_bits = 0; | |
| 1391 | |
|
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1392 // retrieve or create the state |
|
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|
1393 JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread); |
|
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|
1394 if (state == NULL) { |
|
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|
1395 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
|
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|
1396 } |
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|
1397 |
| 0 | 1398 // Check if java_thread is fully suspended |
| 1399 if (!is_thread_fully_suspended(java_thread, true /* wait for suspend completion */, &debug_bits)) { | |
| 1400 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
| 1401 } | |
| 1402 // Check to see if a PopFrame was already in progress | |
| 1403 if (java_thread->popframe_condition() != JavaThread::popframe_inactive) { | |
| 1404 // Probably possible for JVMTI clients to trigger this, but the | |
| 1405 // JPDA backend shouldn't allow this to happen | |
| 1406 return JVMTI_ERROR_INTERNAL; | |
| 1407 } | |
| 1408 | |
| 1409 { | |
| 1410 // Was workaround bug | |
| 1411 // 4812902: popFrame hangs if the method is waiting at a synchronize | |
| 1412 // Catch this condition and return an error to avoid hanging. | |
| 1413 // Now JVMTI spec allows an implementation to bail out with an opaque frame error. | |
| 1414 OSThread* osThread = java_thread->osthread(); | |
| 1415 if (osThread->get_state() == MONITOR_WAIT) { | |
| 1416 return JVMTI_ERROR_OPAQUE_FRAME; | |
| 1417 } | |
| 1418 } | |
| 1419 | |
| 1420 { | |
| 1421 ResourceMark rm(current_thread); | |
| 1422 // Check if there are more than one Java frame in this thread, that the top two frames | |
| 1423 // are Java (not native) frames, and that there is no intervening VM frame | |
| 1424 int frame_count = 0; | |
| 1425 bool is_interpreted[2]; | |
| 1426 intptr_t *frame_sp[2]; | |
| 1427 // The 2-nd arg of constructor is needed to stop iterating at java entry frame. | |
| 1428 for (vframeStream vfs(java_thread, true); !vfs.at_end(); vfs.next()) { | |
| 1429 methodHandle mh(current_thread, vfs.method()); | |
| 1430 if (mh->is_native()) return(JVMTI_ERROR_OPAQUE_FRAME); | |
| 1431 is_interpreted[frame_count] = vfs.is_interpreted_frame(); | |
| 1432 frame_sp[frame_count] = vfs.frame_id(); | |
| 1433 if (++frame_count > 1) break; | |
| 1434 } | |
| 1435 if (frame_count < 2) { | |
| 1436 // We haven't found two adjacent non-native Java frames on the top. | |
| 1437 // There can be two situations here: | |
| 1438 // 1. There are no more java frames | |
| 1439 // 2. Two top java frames are separated by non-java native frames | |
| 1440 if(vframeFor(java_thread, 1) == NULL) { | |
| 1441 return JVMTI_ERROR_NO_MORE_FRAMES; | |
| 1442 } else { | |
| 1443 // Intervening non-java native or VM frames separate java frames. | |
| 1444 // Current implementation does not support this. See bug #5031735. | |
| 1445 // In theory it is possible to pop frames in such cases. | |
| 1446 return JVMTI_ERROR_OPAQUE_FRAME; | |
| 1447 } | |
| 1448 } | |
| 1449 | |
| 1450 // If any of the top 2 frames is a compiled one, need to deoptimize it | |
| 1451 for (int i = 0; i < 2; i++) { | |
| 1452 if (!is_interpreted[i]) { | |
|
1905
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|
1453 Deoptimization::deoptimize_frame(java_thread, frame_sp[i]); |
| 0 | 1454 } |
| 1455 } | |
| 1456 | |
| 1457 // Update the thread state to reflect that the top frame is popped | |
| 1458 // so that cur_stack_depth is maintained properly and all frameIDs | |
| 1459 // are invalidated. | |
| 1460 // The current frame will be popped later when the suspended thread | |
| 1461 // is resumed and right before returning from VM to Java. | |
| 1462 // (see call_VM_base() in assembler_<cpu>.cpp). | |
| 1463 | |
| 1464 // It's fine to update the thread state here because no JVMTI events | |
| 1465 // shall be posted for this PopFrame. | |
| 1466 | |
|
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1467 // It is only safe to perform the direct operation on the current |
|
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|
1468 // thread. All other usage needs to use a vm-safepoint-op for safety. |
|
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|
1469 if (java_thread == JavaThread::current()) { |
|
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|
1470 state->update_for_pop_top_frame(); |
|
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1471 } else { |
|
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|
1472 VM_UpdateForPopTopFrame op(state); |
|
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1473 VMThread::execute(&op); |
|
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1474 jvmtiError err = op.result(); |
|
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1475 if (err != JVMTI_ERROR_NONE) { |
|
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1476 return err; |
|
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1477 } |
|
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|
1478 } |
|
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|
1479 |
| 0 | 1480 java_thread->set_popframe_condition(JavaThread::popframe_pending_bit); |
| 1481 // Set pending step flag for this popframe and it is cleared when next | |
| 1482 // step event is posted. | |
| 1483 state->set_pending_step_for_popframe(); | |
| 1484 } | |
| 1485 | |
| 1486 return JVMTI_ERROR_NONE; | |
| 1487 } /* end PopFrame */ | |
| 1488 | |
| 1489 | |
| 1490 // Threads_lock NOT held, java_thread not protected by lock | |
| 1491 // java_thread - pre-checked | |
| 1492 // java_thread - unchecked | |
| 1493 // depth - pre-checked as non-negative | |
| 1494 // method_ptr - pre-checked for NULL | |
| 1495 // location_ptr - pre-checked for NULL | |
| 1496 jvmtiError | |
| 1497 JvmtiEnv::GetFrameLocation(JavaThread* java_thread, jint depth, jmethodID* method_ptr, jlocation* location_ptr) { | |
| 1498 jvmtiError err = JVMTI_ERROR_NONE; | |
|
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|
1499 |
|
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|
1500 // It is only safe to perform the direct operation on the current |
|
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|
1501 // thread. All other usage needs to use a vm-safepoint-op for safety. |
|
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|
1502 if (java_thread == JavaThread::current()) { |
| 0 | 1503 err = get_frame_location(java_thread, depth, method_ptr, location_ptr); |
| 1504 } else { | |
| 1505 // JVMTI get java stack frame location at safepoint. | |
| 1506 VM_GetFrameLocation op(this, java_thread, depth, method_ptr, location_ptr); | |
| 1507 VMThread::execute(&op); | |
| 1508 err = op.result(); | |
| 1509 } | |
| 1510 return err; | |
| 1511 } /* end GetFrameLocation */ | |
| 1512 | |
| 1513 | |
| 1514 // Threads_lock NOT held, java_thread not protected by lock | |
| 1515 // java_thread - pre-checked | |
| 1516 // java_thread - unchecked | |
| 1517 // depth - pre-checked as non-negative | |
| 1518 jvmtiError | |
| 1519 JvmtiEnv::NotifyFramePop(JavaThread* java_thread, jint depth) { | |
|
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|
1520 jvmtiError err = JVMTI_ERROR_NONE; |
| 0 | 1521 ResourceMark rm; |
| 1522 uint32_t debug_bits = 0; | |
| 1523 | |
|
609
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|
1524 JvmtiThreadState *state = JvmtiThreadState::state_for(java_thread); |
|
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1525 if (state == NULL) { |
|
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1526 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
|
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|
1527 } |
|
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|
1528 |
| 0 | 1529 if (!JvmtiEnv::is_thread_fully_suspended(java_thread, true, &debug_bits)) { |
| 1530 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
| 1531 } | |
| 1532 | |
| 1533 if (TraceJVMTICalls) { | |
| 1534 JvmtiSuspendControl::print(); | |
| 1535 } | |
| 1536 | |
| 1537 vframe *vf = vframeFor(java_thread, depth); | |
| 1538 if (vf == NULL) { | |
| 1539 return JVMTI_ERROR_NO_MORE_FRAMES; | |
| 1540 } | |
| 1541 | |
| 1542 if (!vf->is_java_frame() || ((javaVFrame*) vf)->method()->is_native()) { | |
| 1543 return JVMTI_ERROR_OPAQUE_FRAME; | |
| 1544 } | |
| 1545 | |
| 1546 assert(vf->frame_pointer() != NULL, "frame pointer mustn't be NULL"); | |
| 1547 | |
|
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|
1548 // It is only safe to perform the direct operation on the current |
|
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|
1549 // thread. All other usage needs to use a vm-safepoint-op for safety. |
|
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|
1550 if (java_thread == JavaThread::current()) { |
|
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|
1551 int frame_number = state->count_frames() - depth; |
|
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|
1552 state->env_thread_state(this)->set_frame_pop(frame_number); |
|
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|
1553 } else { |
|
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|
1554 VM_SetFramePop op(this, state, depth); |
|
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|
1555 VMThread::execute(&op); |
|
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|
1556 err = op.result(); |
|
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|
1557 } |
|
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|
1558 return err; |
| 0 | 1559 } /* end NotifyFramePop */ |
| 1560 | |
| 1561 | |
| 1562 // | |
| 1563 // Force Early Return functions | |
| 1564 // | |
| 1565 | |
| 1566 // Threads_lock NOT held, java_thread not protected by lock | |
| 1567 // java_thread - pre-checked | |
| 1568 jvmtiError | |
| 1569 JvmtiEnv::ForceEarlyReturnObject(JavaThread* java_thread, jobject value) { | |
| 1570 jvalue val; | |
| 1571 val.l = value; | |
| 1572 return force_early_return(java_thread, val, atos); | |
| 1573 } /* end ForceEarlyReturnObject */ | |
| 1574 | |
| 1575 | |
| 1576 // Threads_lock NOT held, java_thread not protected by lock | |
| 1577 // java_thread - pre-checked | |
| 1578 jvmtiError | |
| 1579 JvmtiEnv::ForceEarlyReturnInt(JavaThread* java_thread, jint value) { | |
| 1580 jvalue val; | |
| 1581 val.i = value; | |
| 1582 return force_early_return(java_thread, val, itos); | |
| 1583 } /* end ForceEarlyReturnInt */ | |
| 1584 | |
| 1585 | |
| 1586 // Threads_lock NOT held, java_thread not protected by lock | |
| 1587 // java_thread - pre-checked | |
| 1588 jvmtiError | |
| 1589 JvmtiEnv::ForceEarlyReturnLong(JavaThread* java_thread, jlong value) { | |
| 1590 jvalue val; | |
| 1591 val.j = value; | |
| 1592 return force_early_return(java_thread, val, ltos); | |
| 1593 } /* end ForceEarlyReturnLong */ | |
| 1594 | |
| 1595 | |
| 1596 // Threads_lock NOT held, java_thread not protected by lock | |
| 1597 // java_thread - pre-checked | |
| 1598 jvmtiError | |
| 1599 JvmtiEnv::ForceEarlyReturnFloat(JavaThread* java_thread, jfloat value) { | |
| 1600 jvalue val; | |
| 1601 val.f = value; | |
| 1602 return force_early_return(java_thread, val, ftos); | |
| 1603 } /* end ForceEarlyReturnFloat */ | |
| 1604 | |
| 1605 | |
| 1606 // Threads_lock NOT held, java_thread not protected by lock | |
| 1607 // java_thread - pre-checked | |
| 1608 jvmtiError | |
| 1609 JvmtiEnv::ForceEarlyReturnDouble(JavaThread* java_thread, jdouble value) { | |
| 1610 jvalue val; | |
| 1611 val.d = value; | |
| 1612 return force_early_return(java_thread, val, dtos); | |
| 1613 } /* end ForceEarlyReturnDouble */ | |
| 1614 | |
| 1615 | |
| 1616 // Threads_lock NOT held, java_thread not protected by lock | |
| 1617 // java_thread - pre-checked | |
| 1618 jvmtiError | |
| 1619 JvmtiEnv::ForceEarlyReturnVoid(JavaThread* java_thread) { | |
| 1620 jvalue val; | |
| 1621 val.j = 0L; | |
| 1622 return force_early_return(java_thread, val, vtos); | |
| 1623 } /* end ForceEarlyReturnVoid */ | |
| 1624 | |
| 1625 | |
| 1626 // | |
| 1627 // Heap functions | |
| 1628 // | |
| 1629 | |
| 1630 // klass - NULL is a valid value, must be checked | |
| 1631 // initial_object - NULL is a valid value, must be checked | |
| 1632 // callbacks - pre-checked for NULL | |
| 1633 // user_data - NULL is a valid value, must be checked | |
| 1634 jvmtiError | |
| 1635 JvmtiEnv::FollowReferences(jint heap_filter, jclass klass, jobject initial_object, const jvmtiHeapCallbacks* callbacks, const void* user_data) { | |
| 1636 // check klass if provided | |
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1637 Klass* k_oop = NULL; |
| 0 | 1638 if (klass != NULL) { |
| 1639 oop k_mirror = JNIHandles::resolve_external_guard(klass); | |
| 1640 if (k_mirror == NULL) { | |
| 1641 return JVMTI_ERROR_INVALID_CLASS; | |
| 1642 } | |
| 1643 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 1644 return JVMTI_ERROR_NONE; | |
| 1645 } | |
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1646 k_oop = java_lang_Class::as_Klass(k_mirror); |
| 0 | 1647 if (k_oop == NULL) { |
| 1648 return JVMTI_ERROR_INVALID_CLASS; | |
| 1649 } | |
| 1650 } | |
| 1651 | |
| 1652 Thread *thread = Thread::current(); | |
| 1653 HandleMark hm(thread); | |
| 1654 KlassHandle kh (thread, k_oop); | |
| 1655 | |
| 1656 TraceTime t("FollowReferences", TraceJVMTIObjectTagging); | |
| 1657 JvmtiTagMap::tag_map_for(this)->follow_references(heap_filter, kh, initial_object, callbacks, user_data); | |
| 1658 return JVMTI_ERROR_NONE; | |
| 1659 } /* end FollowReferences */ | |
| 1660 | |
| 1661 | |
| 1662 // klass - NULL is a valid value, must be checked | |
| 1663 // callbacks - pre-checked for NULL | |
| 1664 // user_data - NULL is a valid value, must be checked | |
| 1665 jvmtiError | |
| 1666 JvmtiEnv::IterateThroughHeap(jint heap_filter, jclass klass, const jvmtiHeapCallbacks* callbacks, const void* user_data) { | |
| 1667 // check klass if provided | |
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1668 Klass* k_oop = NULL; |
| 0 | 1669 if (klass != NULL) { |
| 1670 oop k_mirror = JNIHandles::resolve_external_guard(klass); | |
| 1671 if (k_mirror == NULL) { | |
| 1672 return JVMTI_ERROR_INVALID_CLASS; | |
| 1673 } | |
| 1674 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 1675 return JVMTI_ERROR_NONE; | |
| 1676 } | |
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1677 k_oop = java_lang_Class::as_Klass(k_mirror); |
| 0 | 1678 if (k_oop == NULL) { |
| 1679 return JVMTI_ERROR_INVALID_CLASS; | |
| 1680 } | |
| 1681 } | |
| 1682 | |
| 1683 Thread *thread = Thread::current(); | |
| 1684 HandleMark hm(thread); | |
| 1685 KlassHandle kh (thread, k_oop); | |
| 1686 | |
| 1687 TraceTime t("IterateThroughHeap", TraceJVMTIObjectTagging); | |
| 1688 JvmtiTagMap::tag_map_for(this)->iterate_through_heap(heap_filter, kh, callbacks, user_data); | |
| 1689 return JVMTI_ERROR_NONE; | |
| 1690 } /* end IterateThroughHeap */ | |
| 1691 | |
| 1692 | |
| 1693 // tag_ptr - pre-checked for NULL | |
| 1694 jvmtiError | |
| 1695 JvmtiEnv::GetTag(jobject object, jlong* tag_ptr) { | |
| 1696 oop o = JNIHandles::resolve_external_guard(object); | |
| 1697 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
| 1698 *tag_ptr = JvmtiTagMap::tag_map_for(this)->get_tag(object); | |
| 1699 return JVMTI_ERROR_NONE; | |
| 1700 } /* end GetTag */ | |
| 1701 | |
| 1702 | |
| 1703 jvmtiError | |
| 1704 JvmtiEnv::SetTag(jobject object, jlong tag) { | |
| 1705 oop o = JNIHandles::resolve_external_guard(object); | |
| 1706 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
| 1707 JvmtiTagMap::tag_map_for(this)->set_tag(object, tag); | |
| 1708 return JVMTI_ERROR_NONE; | |
| 1709 } /* end SetTag */ | |
| 1710 | |
| 1711 | |
| 1712 // tag_count - pre-checked to be greater than or equal to 0 | |
| 1713 // tags - pre-checked for NULL | |
| 1714 // count_ptr - pre-checked for NULL | |
| 1715 // object_result_ptr - NULL is a valid value, must be checked | |
| 1716 // tag_result_ptr - NULL is a valid value, must be checked | |
| 1717 jvmtiError | |
| 1718 JvmtiEnv::GetObjectsWithTags(jint tag_count, const jlong* tags, jint* count_ptr, jobject** object_result_ptr, jlong** tag_result_ptr) { | |
| 1719 TraceTime t("GetObjectsWithTags", TraceJVMTIObjectTagging); | |
| 1720 return JvmtiTagMap::tag_map_for(this)->get_objects_with_tags((jlong*)tags, tag_count, count_ptr, object_result_ptr, tag_result_ptr); | |
| 1721 } /* end GetObjectsWithTags */ | |
| 1722 | |
| 1723 | |
| 1724 jvmtiError | |
| 1725 JvmtiEnv::ForceGarbageCollection() { | |
| 1726 Universe::heap()->collect(GCCause::_jvmti_force_gc); | |
| 1727 return JVMTI_ERROR_NONE; | |
| 1728 } /* end ForceGarbageCollection */ | |
| 1729 | |
| 1730 | |
| 1731 // | |
| 1732 // Heap (1.0) functions | |
| 1733 // | |
| 1734 | |
| 1735 // object_reference_callback - pre-checked for NULL | |
| 1736 // user_data - NULL is a valid value, must be checked | |
| 1737 jvmtiError | |
| 1738 JvmtiEnv::IterateOverObjectsReachableFromObject(jobject object, jvmtiObjectReferenceCallback object_reference_callback, const void* user_data) { | |
| 1739 oop o = JNIHandles::resolve_external_guard(object); | |
| 1740 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
| 1741 JvmtiTagMap::tag_map_for(this)->iterate_over_objects_reachable_from_object(object, object_reference_callback, user_data); | |
| 1742 return JVMTI_ERROR_NONE; | |
| 1743 } /* end IterateOverObjectsReachableFromObject */ | |
| 1744 | |
| 1745 | |
| 1746 // heap_root_callback - NULL is a valid value, must be checked | |
| 1747 // stack_ref_callback - NULL is a valid value, must be checked | |
| 1748 // object_ref_callback - NULL is a valid value, must be checked | |
| 1749 // user_data - NULL is a valid value, must be checked | |
| 1750 jvmtiError | |
| 1751 JvmtiEnv::IterateOverReachableObjects(jvmtiHeapRootCallback heap_root_callback, jvmtiStackReferenceCallback stack_ref_callback, jvmtiObjectReferenceCallback object_ref_callback, const void* user_data) { | |
| 1752 TraceTime t("IterateOverReachableObjects", TraceJVMTIObjectTagging); | |
| 1753 JvmtiTagMap::tag_map_for(this)->iterate_over_reachable_objects(heap_root_callback, stack_ref_callback, object_ref_callback, user_data); | |
| 1754 return JVMTI_ERROR_NONE; | |
| 1755 } /* end IterateOverReachableObjects */ | |
| 1756 | |
| 1757 | |
| 1758 // heap_object_callback - pre-checked for NULL | |
| 1759 // user_data - NULL is a valid value, must be checked | |
| 1760 jvmtiError | |
| 1761 JvmtiEnv::IterateOverHeap(jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) { | |
| 1762 TraceTime t("IterateOverHeap", TraceJVMTIObjectTagging); | |
| 1763 Thread *thread = Thread::current(); | |
| 1764 HandleMark hm(thread); | |
| 1765 JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, KlassHandle(), heap_object_callback, user_data); | |
| 1766 return JVMTI_ERROR_NONE; | |
| 1767 } /* end IterateOverHeap */ | |
| 1768 | |
| 1769 | |
| 1770 // k_mirror - may be primitive, this must be checked | |
| 1771 // heap_object_callback - pre-checked for NULL | |
| 1772 // user_data - NULL is a valid value, must be checked | |
| 1773 jvmtiError | |
| 1774 JvmtiEnv::IterateOverInstancesOfClass(oop k_mirror, jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) { | |
| 1775 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 1776 // DO PRIMITIVE CLASS PROCESSING | |
| 1777 return JVMTI_ERROR_NONE; | |
| 1778 } | |
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1779 Klass* k_oop = java_lang_Class::as_Klass(k_mirror); |
| 0 | 1780 if (k_oop == NULL) { |
| 1781 return JVMTI_ERROR_INVALID_CLASS; | |
| 1782 } | |
| 1783 Thread *thread = Thread::current(); | |
| 1784 HandleMark hm(thread); | |
| 1785 KlassHandle klass (thread, k_oop); | |
| 1786 TraceTime t("IterateOverInstancesOfClass", TraceJVMTIObjectTagging); | |
| 1787 JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, klass, heap_object_callback, user_data); | |
| 1788 return JVMTI_ERROR_NONE; | |
| 1789 } /* end IterateOverInstancesOfClass */ | |
| 1790 | |
| 1791 | |
| 1792 // | |
| 1793 // Local Variable functions | |
| 1794 // | |
| 1795 | |
| 1796 // Threads_lock NOT held, java_thread not protected by lock | |
| 1797 // java_thread - pre-checked | |
| 1798 // java_thread - unchecked | |
| 1799 // depth - pre-checked as non-negative | |
| 1800 // value_ptr - pre-checked for NULL | |
| 1801 jvmtiError | |
| 1802 JvmtiEnv::GetLocalObject(JavaThread* java_thread, jint depth, jint slot, jobject* value_ptr) { | |
| 1803 JavaThread* current_thread = JavaThread::current(); | |
| 1804 // rm object is created to clean up the javaVFrame created in | |
| 1805 // doit_prologue(), but after doit() is finished with it. | |
| 1806 ResourceMark rm(current_thread); | |
| 1807 | |
| 1808 VM_GetOrSetLocal op(java_thread, current_thread, depth, slot); | |
| 1809 VMThread::execute(&op); | |
| 1810 jvmtiError err = op.result(); | |
| 1811 if (err != JVMTI_ERROR_NONE) { | |
| 1812 return err; | |
| 1813 } else { | |
| 1814 *value_ptr = op.value().l; | |
| 1815 return JVMTI_ERROR_NONE; | |
| 1816 } | |
| 1817 } /* end GetLocalObject */ | |
| 1818 | |
| 2019 | 1819 // Threads_lock NOT held, java_thread not protected by lock |
| 1820 // java_thread - pre-checked | |
| 1821 // java_thread - unchecked | |
| 1822 // depth - pre-checked as non-negative | |
| 1823 // value - pre-checked for NULL | |
| 1824 jvmtiError | |
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1825 JvmtiEnv::GetLocalInstance(JavaThread* java_thread, jint depth, jobject* value_ptr){ |
| 2019 | 1826 JavaThread* current_thread = JavaThread::current(); |
| 1827 // rm object is created to clean up the javaVFrame created in | |
| 1828 // doit_prologue(), but after doit() is finished with it. | |
| 1829 ResourceMark rm(current_thread); | |
| 1830 | |
| 1831 VM_GetReceiver op(java_thread, current_thread, depth); | |
| 1832 VMThread::execute(&op); | |
| 1833 jvmtiError err = op.result(); | |
| 1834 if (err != JVMTI_ERROR_NONE) { | |
| 1835 return err; | |
| 1836 } else { | |
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1837 *value_ptr = op.value().l; |
| 2019 | 1838 return JVMTI_ERROR_NONE; |
| 1839 } | |
| 1840 } /* end GetLocalInstance */ | |
| 1841 | |
| 0 | 1842 |
| 1843 // Threads_lock NOT held, java_thread not protected by lock | |
| 1844 // java_thread - pre-checked | |
| 1845 // java_thread - unchecked | |
| 1846 // depth - pre-checked as non-negative | |
| 1847 // value_ptr - pre-checked for NULL | |
| 1848 jvmtiError | |
| 1849 JvmtiEnv::GetLocalInt(JavaThread* java_thread, jint depth, jint slot, jint* value_ptr) { | |
| 1850 // rm object is created to clean up the javaVFrame created in | |
| 1851 // doit_prologue(), but after doit() is finished with it. | |
| 1852 ResourceMark rm; | |
| 1853 | |
| 1854 VM_GetOrSetLocal op(java_thread, depth, slot, T_INT); | |
| 1855 VMThread::execute(&op); | |
| 1856 *value_ptr = op.value().i; | |
| 1857 return op.result(); | |
| 1858 } /* end GetLocalInt */ | |
| 1859 | |
| 1860 | |
| 1861 // Threads_lock NOT held, java_thread not protected by lock | |
| 1862 // java_thread - pre-checked | |
| 1863 // java_thread - unchecked | |
| 1864 // depth - pre-checked as non-negative | |
| 1865 // value_ptr - pre-checked for NULL | |
| 1866 jvmtiError | |
| 1867 JvmtiEnv::GetLocalLong(JavaThread* java_thread, jint depth, jint slot, jlong* value_ptr) { | |
| 1868 // rm object is created to clean up the javaVFrame created in | |
| 1869 // doit_prologue(), but after doit() is finished with it. | |
| 1870 ResourceMark rm; | |
| 1871 | |
| 1872 VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG); | |
| 1873 VMThread::execute(&op); | |
| 1874 *value_ptr = op.value().j; | |
| 1875 return op.result(); | |
| 1876 } /* end GetLocalLong */ | |
| 1877 | |
| 1878 | |
| 1879 // Threads_lock NOT held, java_thread not protected by lock | |
| 1880 // java_thread - pre-checked | |
| 1881 // java_thread - unchecked | |
| 1882 // depth - pre-checked as non-negative | |
| 1883 // value_ptr - pre-checked for NULL | |
| 1884 jvmtiError | |
| 1885 JvmtiEnv::GetLocalFloat(JavaThread* java_thread, jint depth, jint slot, jfloat* value_ptr) { | |
| 1886 // rm object is created to clean up the javaVFrame created in | |
| 1887 // doit_prologue(), but after doit() is finished with it. | |
| 1888 ResourceMark rm; | |
| 1889 | |
| 1890 VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT); | |
| 1891 VMThread::execute(&op); | |
| 1892 *value_ptr = op.value().f; | |
| 1893 return op.result(); | |
| 1894 } /* end GetLocalFloat */ | |
| 1895 | |
| 1896 | |
| 1897 // Threads_lock NOT held, java_thread not protected by lock | |
| 1898 // java_thread - pre-checked | |
| 1899 // java_thread - unchecked | |
| 1900 // depth - pre-checked as non-negative | |
| 1901 // value_ptr - pre-checked for NULL | |
| 1902 jvmtiError | |
| 1903 JvmtiEnv::GetLocalDouble(JavaThread* java_thread, jint depth, jint slot, jdouble* value_ptr) { | |
| 1904 // rm object is created to clean up the javaVFrame created in | |
| 1905 // doit_prologue(), but after doit() is finished with it. | |
| 1906 ResourceMark rm; | |
| 1907 | |
| 1908 VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE); | |
| 1909 VMThread::execute(&op); | |
| 1910 *value_ptr = op.value().d; | |
| 1911 return op.result(); | |
| 1912 } /* end GetLocalDouble */ | |
| 1913 | |
| 1914 | |
| 1915 // Threads_lock NOT held, java_thread not protected by lock | |
| 1916 // java_thread - pre-checked | |
| 1917 // java_thread - unchecked | |
| 1918 // depth - pre-checked as non-negative | |
| 1919 jvmtiError | |
| 1920 JvmtiEnv::SetLocalObject(JavaThread* java_thread, jint depth, jint slot, jobject value) { | |
| 1921 // rm object is created to clean up the javaVFrame created in | |
| 1922 // doit_prologue(), but after doit() is finished with it. | |
| 1923 ResourceMark rm; | |
| 1924 jvalue val; | |
| 1925 val.l = value; | |
| 1926 VM_GetOrSetLocal op(java_thread, depth, slot, T_OBJECT, val); | |
| 1927 VMThread::execute(&op); | |
| 1928 return op.result(); | |
| 1929 } /* end SetLocalObject */ | |
| 1930 | |
| 1931 | |
| 1932 // Threads_lock NOT held, java_thread not protected by lock | |
| 1933 // java_thread - pre-checked | |
| 1934 // java_thread - unchecked | |
| 1935 // depth - pre-checked as non-negative | |
| 1936 jvmtiError | |
| 1937 JvmtiEnv::SetLocalInt(JavaThread* java_thread, jint depth, jint slot, jint value) { | |
| 1938 // rm object is created to clean up the javaVFrame created in | |
| 1939 // doit_prologue(), but after doit() is finished with it. | |
| 1940 ResourceMark rm; | |
| 1941 jvalue val; | |
| 1942 val.i = value; | |
| 1943 VM_GetOrSetLocal op(java_thread, depth, slot, T_INT, val); | |
| 1944 VMThread::execute(&op); | |
| 1945 return op.result(); | |
| 1946 } /* end SetLocalInt */ | |
| 1947 | |
| 1948 | |
| 1949 // Threads_lock NOT held, java_thread not protected by lock | |
| 1950 // java_thread - pre-checked | |
| 1951 // java_thread - unchecked | |
| 1952 // depth - pre-checked as non-negative | |
| 1953 jvmtiError | |
| 1954 JvmtiEnv::SetLocalLong(JavaThread* java_thread, jint depth, jint slot, jlong value) { | |
| 1955 // rm object is created to clean up the javaVFrame created in | |
| 1956 // doit_prologue(), but after doit() is finished with it. | |
| 1957 ResourceMark rm; | |
| 1958 jvalue val; | |
| 1959 val.j = value; | |
| 1960 VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG, val); | |
| 1961 VMThread::execute(&op); | |
| 1962 return op.result(); | |
| 1963 } /* end SetLocalLong */ | |
| 1964 | |
| 1965 | |
| 1966 // Threads_lock NOT held, java_thread not protected by lock | |
| 1967 // java_thread - pre-checked | |
| 1968 // java_thread - unchecked | |
| 1969 // depth - pre-checked as non-negative | |
| 1970 jvmtiError | |
| 1971 JvmtiEnv::SetLocalFloat(JavaThread* java_thread, jint depth, jint slot, jfloat value) { | |
| 1972 // rm object is created to clean up the javaVFrame created in | |
| 1973 // doit_prologue(), but after doit() is finished with it. | |
| 1974 ResourceMark rm; | |
| 1975 jvalue val; | |
| 1976 val.f = value; | |
| 1977 VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT, val); | |
| 1978 VMThread::execute(&op); | |
| 1979 return op.result(); | |
| 1980 } /* end SetLocalFloat */ | |
| 1981 | |
| 1982 | |
| 1983 // Threads_lock NOT held, java_thread not protected by lock | |
| 1984 // java_thread - pre-checked | |
| 1985 // java_thread - unchecked | |
| 1986 // depth - pre-checked as non-negative | |
| 1987 jvmtiError | |
| 1988 JvmtiEnv::SetLocalDouble(JavaThread* java_thread, jint depth, jint slot, jdouble value) { | |
| 1989 // rm object is created to clean up the javaVFrame created in | |
| 1990 // doit_prologue(), but after doit() is finished with it. | |
| 1991 ResourceMark rm; | |
| 1992 jvalue val; | |
| 1993 val.d = value; | |
| 1994 VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE, val); | |
| 1995 VMThread::execute(&op); | |
| 1996 return op.result(); | |
| 1997 } /* end SetLocalDouble */ | |
| 1998 | |
| 1999 | |
| 2000 // | |
| 2001 // Breakpoint functions | |
| 2002 // | |
| 2003 | |
| 2004 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2005 jvmtiError | |
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2006 JvmtiEnv::SetBreakpoint(Method* method_oop, jlocation location) { |
| 0 | 2007 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
| 2008 if (location < 0) { // simple invalid location check first | |
| 2009 return JVMTI_ERROR_INVALID_LOCATION; | |
| 2010 } | |
| 2011 // verify that the breakpoint is not past the end of the method | |
| 2012 if (location >= (jlocation) method_oop->code_size()) { | |
| 2013 return JVMTI_ERROR_INVALID_LOCATION; | |
| 2014 } | |
| 2015 | |
| 2016 ResourceMark rm; | |
| 2017 JvmtiBreakpoint bp(method_oop, location); | |
| 2018 JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints(); | |
| 2019 if (jvmti_breakpoints.set(bp) == JVMTI_ERROR_DUPLICATE) | |
| 2020 return JVMTI_ERROR_DUPLICATE; | |
| 2021 | |
| 2022 if (TraceJVMTICalls) { | |
| 2023 jvmti_breakpoints.print(); | |
| 2024 } | |
| 2025 | |
| 2026 return JVMTI_ERROR_NONE; | |
| 2027 } /* end SetBreakpoint */ | |
| 2028 | |
| 2029 | |
| 2030 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2031 jvmtiError | |
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2032 JvmtiEnv::ClearBreakpoint(Method* method_oop, jlocation location) { |
| 0 | 2033 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
| 2034 | |
| 2035 if (location < 0) { // simple invalid location check first | |
| 2036 return JVMTI_ERROR_INVALID_LOCATION; | |
| 2037 } | |
| 2038 | |
| 2039 // verify that the breakpoint is not past the end of the method | |
| 2040 if (location >= (jlocation) method_oop->code_size()) { | |
| 2041 return JVMTI_ERROR_INVALID_LOCATION; | |
| 2042 } | |
| 2043 | |
| 2044 JvmtiBreakpoint bp(method_oop, location); | |
| 2045 | |
| 2046 JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints(); | |
| 2047 if (jvmti_breakpoints.clear(bp) == JVMTI_ERROR_NOT_FOUND) | |
| 2048 return JVMTI_ERROR_NOT_FOUND; | |
| 2049 | |
| 2050 if (TraceJVMTICalls) { | |
| 2051 jvmti_breakpoints.print(); | |
| 2052 } | |
| 2053 | |
| 2054 return JVMTI_ERROR_NONE; | |
| 2055 } /* end ClearBreakpoint */ | |
| 2056 | |
| 2057 | |
| 2058 // | |
| 2059 // Watched Field functions | |
| 2060 // | |
| 2061 | |
| 2062 jvmtiError | |
| 2063 JvmtiEnv::SetFieldAccessWatch(fieldDescriptor* fdesc_ptr) { | |
| 2064 // make sure we haven't set this watch before | |
| 2065 if (fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_DUPLICATE; | |
| 2066 fdesc_ptr->set_is_field_access_watched(true); | |
| 2067 | |
| 2068 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, true); | |
| 2069 | |
| 2070 return JVMTI_ERROR_NONE; | |
| 2071 } /* end SetFieldAccessWatch */ | |
| 2072 | |
| 2073 | |
| 2074 jvmtiError | |
| 2075 JvmtiEnv::ClearFieldAccessWatch(fieldDescriptor* fdesc_ptr) { | |
| 2076 // make sure we have a watch to clear | |
| 2077 if (!fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_NOT_FOUND; | |
| 2078 fdesc_ptr->set_is_field_access_watched(false); | |
| 2079 | |
| 2080 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, false); | |
| 2081 | |
| 2082 return JVMTI_ERROR_NONE; | |
| 2083 } /* end ClearFieldAccessWatch */ | |
| 2084 | |
| 2085 | |
| 2086 jvmtiError | |
| 2087 JvmtiEnv::SetFieldModificationWatch(fieldDescriptor* fdesc_ptr) { | |
| 2088 // make sure we haven't set this watch before | |
| 2089 if (fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_DUPLICATE; | |
| 2090 fdesc_ptr->set_is_field_modification_watched(true); | |
| 2091 | |
| 2092 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, true); | |
| 2093 | |
| 2094 return JVMTI_ERROR_NONE; | |
| 2095 } /* end SetFieldModificationWatch */ | |
| 2096 | |
| 2097 | |
| 2098 jvmtiError | |
| 2099 JvmtiEnv::ClearFieldModificationWatch(fieldDescriptor* fdesc_ptr) { | |
| 2100 // make sure we have a watch to clear | |
| 2101 if (!fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_NOT_FOUND; | |
| 2102 fdesc_ptr->set_is_field_modification_watched(false); | |
| 2103 | |
| 2104 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, false); | |
| 2105 | |
| 2106 return JVMTI_ERROR_NONE; | |
| 2107 } /* end ClearFieldModificationWatch */ | |
| 2108 | |
| 2109 // | |
| 2110 // Class functions | |
| 2111 // | |
| 2112 | |
| 2113 | |
| 2114 // k_mirror - may be primitive, this must be checked | |
| 2115 // signature_ptr - NULL is a valid value, must be checked | |
| 2116 // generic_ptr - NULL is a valid value, must be checked | |
| 2117 jvmtiError | |
| 2118 JvmtiEnv::GetClassSignature(oop k_mirror, char** signature_ptr, char** generic_ptr) { | |
| 2119 ResourceMark rm; | |
| 2120 bool isPrimitive = java_lang_Class::is_primitive(k_mirror); | |
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2121 Klass* k = NULL; |
| 0 | 2122 if (!isPrimitive) { |
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2123 k = java_lang_Class::as_Klass(k_mirror); |
| 0 | 2124 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
| 2125 } | |
| 2126 if (signature_ptr != NULL) { | |
| 2127 char* result = NULL; | |
| 2128 if (isPrimitive) { | |
| 2129 char tchar = type2char(java_lang_Class::primitive_type(k_mirror)); | |
| 2130 result = (char*) jvmtiMalloc(2); | |
| 2131 result[0] = tchar; | |
| 2132 result[1] = '\0'; | |
| 2133 } else { | |
| 6983 | 2134 const char* class_sig = k->signature_name(); |
| 0 | 2135 result = (char *) jvmtiMalloc(strlen(class_sig)+1); |
| 2136 strcpy(result, class_sig); | |
| 2137 } | |
| 2138 *signature_ptr = result; | |
| 2139 } | |
| 2140 if (generic_ptr != NULL) { | |
| 2141 *generic_ptr = NULL; | |
| 6983 | 2142 if (!isPrimitive && k->oop_is_instance()) { |
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2143 Symbol* soo = InstanceKlass::cast(k)->generic_signature(); |
| 0 | 2144 if (soo != NULL) { |
| 2145 const char *gen_sig = soo->as_C_string(); | |
| 2146 if (gen_sig != NULL) { | |
| 2147 char* gen_result; | |
| 2148 jvmtiError err = allocate(strlen(gen_sig) + 1, | |
| 2149 (unsigned char **)&gen_result); | |
| 2150 if (err != JVMTI_ERROR_NONE) { | |
| 2151 return err; | |
| 2152 } | |
| 2153 strcpy(gen_result, gen_sig); | |
| 2154 *generic_ptr = gen_result; | |
| 2155 } | |
| 2156 } | |
| 2157 } | |
| 2158 } | |
| 2159 return JVMTI_ERROR_NONE; | |
| 2160 } /* end GetClassSignature */ | |
| 2161 | |
| 2162 | |
| 2163 // k_mirror - may be primitive, this must be checked | |
| 2164 // status_ptr - pre-checked for NULL | |
| 2165 jvmtiError | |
| 2166 JvmtiEnv::GetClassStatus(oop k_mirror, jint* status_ptr) { | |
| 2167 jint result = 0; | |
| 2168 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2169 result |= JVMTI_CLASS_STATUS_PRIMITIVE; | |
| 2170 } else { | |
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2171 Klass* k = java_lang_Class::as_Klass(k_mirror); |
| 0 | 2172 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
| 6983 | 2173 result = k->jvmti_class_status(); |
| 0 | 2174 } |
| 2175 *status_ptr = result; | |
| 2176 | |
| 2177 return JVMTI_ERROR_NONE; | |
| 2178 } /* end GetClassStatus */ | |
| 2179 | |
| 2180 | |
| 2181 // k_mirror - may be primitive, this must be checked | |
| 2182 // source_name_ptr - pre-checked for NULL | |
| 2183 jvmtiError | |
| 2184 JvmtiEnv::GetSourceFileName(oop k_mirror, char** source_name_ptr) { | |
| 2185 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2186 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2187 } | |
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2188 Klass* k_klass = java_lang_Class::as_Klass(k_mirror); |
| 0 | 2189 NULL_CHECK(k_klass, JVMTI_ERROR_INVALID_CLASS); |
| 2190 | |
| 6983 | 2191 if (!k_klass->oop_is_instance()) { |
| 0 | 2192 return JVMTI_ERROR_ABSENT_INFORMATION; |
| 2193 } | |
| 2194 | |
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2195 Symbol* sfnOop = InstanceKlass::cast(k_klass)->source_file_name(); |
| 0 | 2196 NULL_CHECK(sfnOop, JVMTI_ERROR_ABSENT_INFORMATION); |
| 2197 { | |
| 2198 JavaThread* current_thread = JavaThread::current(); | |
| 2199 ResourceMark rm(current_thread); | |
| 2200 const char* sfncp = (const char*) sfnOop->as_C_string(); | |
| 2201 *source_name_ptr = (char *) jvmtiMalloc(strlen(sfncp)+1); | |
| 2202 strcpy(*source_name_ptr, sfncp); | |
| 2203 } | |
| 2204 | |
| 2205 return JVMTI_ERROR_NONE; | |
| 2206 } /* end GetSourceFileName */ | |
| 2207 | |
| 2208 | |
| 2209 // k_mirror - may be primitive, this must be checked | |
| 2210 // modifiers_ptr - pre-checked for NULL | |
| 2211 jvmtiError | |
| 2212 JvmtiEnv::GetClassModifiers(oop k_mirror, jint* modifiers_ptr) { | |
| 2213 JavaThread* current_thread = JavaThread::current(); | |
| 2214 jint result = 0; | |
| 2215 if (!java_lang_Class::is_primitive(k_mirror)) { | |
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2216 Klass* k = java_lang_Class::as_Klass(k_mirror); |
| 0 | 2217 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
| 6983 | 2218 result = k->compute_modifier_flags(current_thread); |
| 0 | 2219 JavaThread* THREAD = current_thread; // pass to macros |
| 2220 if (HAS_PENDING_EXCEPTION) { | |
| 2221 CLEAR_PENDING_EXCEPTION; | |
| 2222 return JVMTI_ERROR_INTERNAL; | |
| 2223 }; | |
| 2224 | |
| 2225 // Reset the deleted ACC_SUPER bit ( deleted in compute_modifier_flags()). | |
| 6983 | 2226 if(k->is_super()) { |
| 0 | 2227 result |= JVM_ACC_SUPER; |
| 2228 } | |
| 2229 } else { | |
| 2230 result = (JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC); | |
| 2231 } | |
| 2232 *modifiers_ptr = result; | |
| 2233 | |
| 2234 return JVMTI_ERROR_NONE; | |
| 2235 } /* end GetClassModifiers */ | |
| 2236 | |
| 2237 | |
| 2238 // k_mirror - may be primitive, this must be checked | |
| 2239 // method_count_ptr - pre-checked for NULL | |
| 2240 // methods_ptr - pre-checked for NULL | |
| 2241 jvmtiError | |
| 2242 JvmtiEnv::GetClassMethods(oop k_mirror, jint* method_count_ptr, jmethodID** methods_ptr) { | |
| 2243 JavaThread* current_thread = JavaThread::current(); | |
| 2244 HandleMark hm(current_thread); | |
| 2245 | |
| 2246 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2247 *method_count_ptr = 0; | |
| 2248 *methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID)); | |
| 2249 return JVMTI_ERROR_NONE; | |
| 2250 } | |
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2251 Klass* k = java_lang_Class::as_Klass(k_mirror); |
| 0 | 2252 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
| 2253 | |
| 2254 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
| 6983 | 2255 if (!(k->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) { |
| 0 | 2256 return JVMTI_ERROR_CLASS_NOT_PREPARED; |
| 2257 } | |
| 2258 | |
| 6983 | 2259 if (!k->oop_is_instance()) { |
| 0 | 2260 *method_count_ptr = 0; |
| 2261 *methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID)); | |
| 2262 return JVMTI_ERROR_NONE; | |
| 2263 } | |
| 2264 instanceKlassHandle instanceK_h(current_thread, k); | |
| 2265 // Allocate the result and fill it in | |
| 2266 int result_length = instanceK_h->methods()->length(); | |
| 2267 jmethodID* result_list = (jmethodID*)jvmtiMalloc(result_length * sizeof(jmethodID)); | |
| 2268 int index; | |
| 2269 if (JvmtiExport::can_maintain_original_method_order()) { | |
| 2270 // Use the original method ordering indices stored in the class, so we can emit | |
| 2271 // jmethodIDs in the order they appeared in the class file | |
| 2272 for (index = 0; index < result_length; index++) { | |
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2273 Method* m = instanceK_h->methods()->at(index); |
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2274 int original_index = instanceK_h->method_ordering()->at(index); |
| 0 | 2275 assert(original_index >= 0 && original_index < result_length, "invalid original method index"); |
| 2276 jmethodID id = m->jmethod_id(); | |
| 2277 result_list[original_index] = id; | |
| 2278 } | |
| 2279 } else { | |
| 2280 // otherwise just copy in any order | |
| 2281 for (index = 0; index < result_length; index++) { | |
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2282 Method* m = instanceK_h->methods()->at(index); |
| 0 | 2283 jmethodID id = m->jmethod_id(); |
| 2284 result_list[index] = id; | |
| 2285 } | |
| 2286 } | |
| 2287 // Fill in return value. | |
| 2288 *method_count_ptr = result_length; | |
| 2289 *methods_ptr = result_list; | |
| 2290 | |
| 2291 return JVMTI_ERROR_NONE; | |
| 2292 } /* end GetClassMethods */ | |
| 2293 | |
| 2294 | |
| 2295 // k_mirror - may be primitive, this must be checked | |
| 2296 // field_count_ptr - pre-checked for NULL | |
| 2297 // fields_ptr - pre-checked for NULL | |
| 2298 jvmtiError | |
| 2299 JvmtiEnv::GetClassFields(oop k_mirror, jint* field_count_ptr, jfieldID** fields_ptr) { | |
| 2300 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2301 *field_count_ptr = 0; | |
| 2302 *fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID)); | |
| 2303 return JVMTI_ERROR_NONE; | |
| 2304 } | |
| 2305 JavaThread* current_thread = JavaThread::current(); | |
| 2306 HandleMark hm(current_thread); | |
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2307 Klass* k = java_lang_Class::as_Klass(k_mirror); |
| 0 | 2308 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
| 2309 | |
| 2310 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
| 6983 | 2311 if (!(k->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) { |
| 0 | 2312 return JVMTI_ERROR_CLASS_NOT_PREPARED; |
| 2313 } | |
| 2314 | |
| 6983 | 2315 if (!k->oop_is_instance()) { |
| 0 | 2316 *field_count_ptr = 0; |
| 2317 *fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID)); | |
| 2318 return JVMTI_ERROR_NONE; | |
| 2319 } | |
| 2320 | |
| 2321 | |
| 2322 instanceKlassHandle instanceK_h(current_thread, k); | |
| 2323 | |
| 2324 int result_count = 0; | |
| 2325 // First, count the fields. | |
| 2326 FilteredFieldStream flds(instanceK_h, true, true); | |
| 2327 result_count = flds.field_count(); | |
| 2328 | |
| 2329 // Allocate the result and fill it in | |
| 2330 jfieldID* result_list = (jfieldID*) jvmtiMalloc(result_count * sizeof(jfieldID)); | |
| 2331 // The JVMTI spec requires fields in the order they occur in the class file, | |
| 2332 // this is the reverse order of what FieldStream hands out. | |
| 2333 int id_index = (result_count - 1); | |
| 2334 | |
| 2335 for (FilteredFieldStream src_st(instanceK_h, true, true); !src_st.eos(); src_st.next()) { | |
| 2336 result_list[id_index--] = jfieldIDWorkaround::to_jfieldID( | |
| 2337 instanceK_h, src_st.offset(), | |
| 2338 src_st.access_flags().is_static()); | |
| 2339 } | |
| 2340 assert(id_index == -1, "just checking"); | |
| 2341 // Fill in the results | |
| 2342 *field_count_ptr = result_count; | |
| 2343 *fields_ptr = result_list; | |
| 2344 | |
| 2345 return JVMTI_ERROR_NONE; | |
| 2346 } /* end GetClassFields */ | |
| 2347 | |
| 2348 | |
| 2349 // k_mirror - may be primitive, this must be checked | |
| 2350 // interface_count_ptr - pre-checked for NULL | |
| 2351 // interfaces_ptr - pre-checked for NULL | |
| 2352 jvmtiError | |
| 2353 JvmtiEnv::GetImplementedInterfaces(oop k_mirror, jint* interface_count_ptr, jclass** interfaces_ptr) { | |
| 2354 { | |
| 2355 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2356 *interface_count_ptr = 0; | |
| 2357 *interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass)); | |
| 2358 return JVMTI_ERROR_NONE; | |
| 2359 } | |
| 2360 JavaThread* current_thread = JavaThread::current(); | |
| 2361 HandleMark hm(current_thread); | |
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2362 Klass* k = java_lang_Class::as_Klass(k_mirror); |
| 0 | 2363 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
| 2364 | |
| 2365 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
| 6983 | 2366 if (!(k->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) |
| 0 | 2367 return JVMTI_ERROR_CLASS_NOT_PREPARED; |
| 2368 | |
| 6983 | 2369 if (!k->oop_is_instance()) { |
| 0 | 2370 *interface_count_ptr = 0; |
| 2371 *interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass)); | |
| 2372 return JVMTI_ERROR_NONE; | |
| 2373 } | |
| 2374 | |
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2375 Array<Klass*>* interface_list = InstanceKlass::cast(k)->local_interfaces(); |
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2376 const int result_length = (interface_list == NULL ? 0 : interface_list->length()); |
| 0 | 2377 jclass* result_list = (jclass*) jvmtiMalloc(result_length * sizeof(jclass)); |
| 2378 for (int i_index = 0; i_index < result_length; i_index += 1) { | |
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2379 Klass* klass_at = interface_list->at(i_index); |
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2380 assert(klass_at->is_klass(), "interfaces must be Klass*s"); |
| 6983 | 2381 assert(klass_at->is_interface(), "interfaces must be interfaces"); |
| 2382 oop mirror_at = klass_at->java_mirror(); | |
| 0 | 2383 Handle handle_at = Handle(current_thread, mirror_at); |
| 2384 result_list[i_index] = (jclass) jni_reference(handle_at); | |
| 2385 } | |
| 2386 *interface_count_ptr = result_length; | |
| 2387 *interfaces_ptr = result_list; | |
| 2388 } | |
| 2389 | |
| 2390 return JVMTI_ERROR_NONE; | |
| 2391 } /* end GetImplementedInterfaces */ | |
| 2392 | |
| 2393 | |
| 2394 // k_mirror - may be primitive, this must be checked | |
| 2395 // minor_version_ptr - pre-checked for NULL | |
| 2396 // major_version_ptr - pre-checked for NULL | |
| 2397 jvmtiError | |
| 2398 JvmtiEnv::GetClassVersionNumbers(oop k_mirror, jint* minor_version_ptr, jint* major_version_ptr) { | |
| 2399 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2400 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2401 } | |
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2402 Klass* k_oop = java_lang_Class::as_Klass(k_mirror); |
| 0 | 2403 Thread *thread = Thread::current(); |
| 2404 HandleMark hm(thread); | |
| 2405 KlassHandle klass(thread, k_oop); | |
| 2406 | |
| 2407 jint status = klass->jvmti_class_status(); | |
| 2408 if (status & (JVMTI_CLASS_STATUS_ERROR)) { | |
| 2409 return JVMTI_ERROR_INVALID_CLASS; | |
| 2410 } | |
| 2411 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { | |
| 2412 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2413 } | |
| 2414 | |
| 2415 instanceKlassHandle ik(thread, k_oop); | |
| 2416 *minor_version_ptr = ik->minor_version(); | |
| 2417 *major_version_ptr = ik->major_version(); | |
| 2418 | |
| 2419 return JVMTI_ERROR_NONE; | |
| 2420 } /* end GetClassVersionNumbers */ | |
| 2421 | |
| 2422 | |
| 2423 // k_mirror - may be primitive, this must be checked | |
| 2424 // constant_pool_count_ptr - pre-checked for NULL | |
| 2425 // constant_pool_byte_count_ptr - pre-checked for NULL | |
| 2426 // constant_pool_bytes_ptr - pre-checked for NULL | |
| 2427 jvmtiError | |
| 2428 JvmtiEnv::GetConstantPool(oop k_mirror, jint* constant_pool_count_ptr, jint* constant_pool_byte_count_ptr, unsigned char** constant_pool_bytes_ptr) { | |
| 2429 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2430 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2431 } | |
| 2432 | |
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2433 Klass* k_oop = java_lang_Class::as_Klass(k_mirror); |
| 0 | 2434 Thread *thread = Thread::current(); |
| 2435 HandleMark hm(thread); | |
| 2436 ResourceMark rm(thread); | |
| 2437 KlassHandle klass(thread, k_oop); | |
| 2438 | |
| 2439 jint status = klass->jvmti_class_status(); | |
| 2440 if (status & (JVMTI_CLASS_STATUS_ERROR)) { | |
| 2441 return JVMTI_ERROR_INVALID_CLASS; | |
| 2442 } | |
| 2443 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { | |
| 2444 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2445 } | |
| 2446 | |
| 2447 instanceKlassHandle ikh(thread, k_oop); | |
| 2448 constantPoolHandle constants(thread, ikh->constants()); | |
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2449 MonitorLockerEx ml(constants->lock()); // lock constant pool while we query it |
| 0 | 2450 |
| 2451 JvmtiConstantPoolReconstituter reconstituter(ikh); | |
| 2452 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
| 2453 return reconstituter.get_error(); | |
| 2454 } | |
| 2455 | |
| 2456 unsigned char *cpool_bytes; | |
| 2457 int cpool_size = reconstituter.cpool_size(); | |
| 2458 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
| 2459 return reconstituter.get_error(); | |
| 2460 } | |
| 2461 jvmtiError res = allocate(cpool_size, &cpool_bytes); | |
| 2462 if (res != JVMTI_ERROR_NONE) { | |
| 2463 return res; | |
| 2464 } | |
| 2465 reconstituter.copy_cpool_bytes(cpool_bytes); | |
| 2466 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
| 2467 return reconstituter.get_error(); | |
| 2468 } | |
| 2469 | |
| 2470 *constant_pool_count_ptr = constants->length(); | |
| 2471 *constant_pool_byte_count_ptr = cpool_size; | |
| 2472 *constant_pool_bytes_ptr = cpool_bytes; | |
| 2473 | |
| 2474 return JVMTI_ERROR_NONE; | |
| 2475 } /* end GetConstantPool */ | |
| 2476 | |
| 2477 | |
| 2478 // k_mirror - may be primitive, this must be checked | |
| 2479 // is_interface_ptr - pre-checked for NULL | |
| 2480 jvmtiError | |
| 2481 JvmtiEnv::IsInterface(oop k_mirror, jboolean* is_interface_ptr) { | |
| 2482 { | |
| 2483 bool result = false; | |
| 2484 if (!java_lang_Class::is_primitive(k_mirror)) { | |
|
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2485 Klass* k = java_lang_Class::as_Klass(k_mirror); |
| 6983 | 2486 if (k != NULL && k->is_interface()) { |
| 0 | 2487 result = true; |
| 2488 } | |
| 2489 } | |
| 2490 *is_interface_ptr = result; | |
| 2491 } | |
| 2492 | |
| 2493 return JVMTI_ERROR_NONE; | |
| 2494 } /* end IsInterface */ | |
| 2495 | |
| 2496 | |
| 2497 // k_mirror - may be primitive, this must be checked | |
| 2498 // is_array_class_ptr - pre-checked for NULL | |
| 2499 jvmtiError | |
| 2500 JvmtiEnv::IsArrayClass(oop k_mirror, jboolean* is_array_class_ptr) { | |
| 2501 { | |
| 2502 bool result = false; | |
| 2503 if (!java_lang_Class::is_primitive(k_mirror)) { | |
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2504 Klass* k = java_lang_Class::as_Klass(k_mirror); |
| 6983 | 2505 if (k != NULL && k->oop_is_array()) { |
| 0 | 2506 result = true; |
| 2507 } | |
| 2508 } | |
| 2509 *is_array_class_ptr = result; | |
| 2510 } | |
| 2511 | |
| 2512 return JVMTI_ERROR_NONE; | |
| 2513 } /* end IsArrayClass */ | |
| 2514 | |
| 2515 | |
| 2516 // k_mirror - may be primitive, this must be checked | |
| 2517 // classloader_ptr - pre-checked for NULL | |
| 2518 jvmtiError | |
| 2519 JvmtiEnv::GetClassLoader(oop k_mirror, jobject* classloader_ptr) { | |
| 2520 { | |
| 2521 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2522 *classloader_ptr = (jclass) jni_reference(Handle()); | |
| 2523 return JVMTI_ERROR_NONE; | |
| 2524 } | |
| 2525 JavaThread* current_thread = JavaThread::current(); | |
| 2526 HandleMark hm(current_thread); | |
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2527 Klass* k = java_lang_Class::as_Klass(k_mirror); |
| 0 | 2528 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
| 2529 | |
| 6983 | 2530 oop result_oop = k->class_loader(); |
| 0 | 2531 if (result_oop == NULL) { |
| 2532 *classloader_ptr = (jclass) jni_reference(Handle()); | |
| 2533 return JVMTI_ERROR_NONE; | |
| 2534 } | |
| 2535 Handle result_handle = Handle(current_thread, result_oop); | |
| 2536 jclass result_jnihandle = (jclass) jni_reference(result_handle); | |
| 2537 *classloader_ptr = result_jnihandle; | |
| 2538 } | |
| 2539 return JVMTI_ERROR_NONE; | |
| 2540 } /* end GetClassLoader */ | |
| 2541 | |
| 2542 | |
| 2543 // k_mirror - may be primitive, this must be checked | |
| 2544 // source_debug_extension_ptr - pre-checked for NULL | |
| 2545 jvmtiError | |
| 2546 JvmtiEnv::GetSourceDebugExtension(oop k_mirror, char** source_debug_extension_ptr) { | |
| 2547 { | |
| 2548 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2549 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2550 } | |
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2551 Klass* k = java_lang_Class::as_Klass(k_mirror); |
| 0 | 2552 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
| 6983 | 2553 if (!k->oop_is_instance()) { |
| 0 | 2554 return JVMTI_ERROR_ABSENT_INFORMATION; |
| 2555 } | |
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2556 char* sde = InstanceKlass::cast(k)->source_debug_extension(); |
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2557 NULL_CHECK(sde, JVMTI_ERROR_ABSENT_INFORMATION); |
| 0 | 2558 |
| 2559 { | |
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2560 *source_debug_extension_ptr = (char *) jvmtiMalloc(strlen(sde)+1); |
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2561 strcpy(*source_debug_extension_ptr, sde); |
| 0 | 2562 } |
| 2563 } | |
| 2564 | |
| 2565 return JVMTI_ERROR_NONE; | |
| 2566 } /* end GetSourceDebugExtension */ | |
| 2567 | |
| 2568 // | |
| 2569 // Object functions | |
| 2570 // | |
| 2571 | |
| 2572 // hash_code_ptr - pre-checked for NULL | |
| 2573 jvmtiError | |
| 2574 JvmtiEnv::GetObjectHashCode(jobject object, jint* hash_code_ptr) { | |
| 2575 oop mirror = JNIHandles::resolve_external_guard(object); | |
| 2576 NULL_CHECK(mirror, JVMTI_ERROR_INVALID_OBJECT); | |
| 2577 NULL_CHECK(hash_code_ptr, JVMTI_ERROR_NULL_POINTER); | |
| 2578 | |
| 2579 { | |
| 2580 jint result = (jint) mirror->identity_hash(); | |
| 2581 *hash_code_ptr = result; | |
| 2582 } | |
| 2583 return JVMTI_ERROR_NONE; | |
| 2584 } /* end GetObjectHashCode */ | |
| 2585 | |
| 2586 | |
| 2587 // info_ptr - pre-checked for NULL | |
| 2588 jvmtiError | |
| 2589 JvmtiEnv::GetObjectMonitorUsage(jobject object, jvmtiMonitorUsage* info_ptr) { | |
| 2590 JavaThread* calling_thread = JavaThread::current(); | |
| 2591 jvmtiError err = get_object_monitor_usage(calling_thread, object, info_ptr); | |
| 2592 if (err == JVMTI_ERROR_THREAD_NOT_SUSPENDED) { | |
| 2593 // Some of the critical threads were not suspended. go to a safepoint and try again | |
| 2594 VM_GetObjectMonitorUsage op(this, calling_thread, object, info_ptr); | |
| 2595 VMThread::execute(&op); | |
| 2596 err = op.result(); | |
| 2597 } | |
| 2598 return err; | |
| 2599 } /* end GetObjectMonitorUsage */ | |
| 2600 | |
| 2601 | |
| 2602 // | |
| 2603 // Field functions | |
| 2604 // | |
| 2605 | |
| 2606 // name_ptr - NULL is a valid value, must be checked | |
| 2607 // signature_ptr - NULL is a valid value, must be checked | |
| 2608 // generic_ptr - NULL is a valid value, must be checked | |
| 2609 jvmtiError | |
| 2610 JvmtiEnv::GetFieldName(fieldDescriptor* fdesc_ptr, char** name_ptr, char** signature_ptr, char** generic_ptr) { | |
| 2611 JavaThread* current_thread = JavaThread::current(); | |
| 2612 ResourceMark rm(current_thread); | |
| 2613 if (name_ptr == NULL) { | |
| 2614 // just don't return the name | |
| 2615 } else { | |
| 2616 const char* fieldName = fdesc_ptr->name()->as_C_string(); | |
| 2617 *name_ptr = (char*) jvmtiMalloc(strlen(fieldName) + 1); | |
| 2618 if (*name_ptr == NULL) | |
| 2619 return JVMTI_ERROR_OUT_OF_MEMORY; | |
| 2620 strcpy(*name_ptr, fieldName); | |
| 2621 } | |
| 2622 if (signature_ptr== NULL) { | |
| 2623 // just don't return the signature | |
| 2624 } else { | |
| 2625 const char* fieldSignature = fdesc_ptr->signature()->as_C_string(); | |
| 2626 *signature_ptr = (char*) jvmtiMalloc(strlen(fieldSignature) + 1); | |
| 2627 if (*signature_ptr == NULL) | |
| 2628 return JVMTI_ERROR_OUT_OF_MEMORY; | |
| 2629 strcpy(*signature_ptr, fieldSignature); | |
| 2630 } | |
| 2631 if (generic_ptr != NULL) { | |
| 2632 *generic_ptr = NULL; | |
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2633 Symbol* soop = fdesc_ptr->generic_signature(); |
| 0 | 2634 if (soop != NULL) { |
| 2635 const char* gen_sig = soop->as_C_string(); | |
| 2636 if (gen_sig != NULL) { | |
| 2637 jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr); | |
| 2638 if (err != JVMTI_ERROR_NONE) { | |
| 2639 return err; | |
| 2640 } | |
| 2641 strcpy(*generic_ptr, gen_sig); | |
| 2642 } | |
| 2643 } | |
| 2644 } | |
| 2645 return JVMTI_ERROR_NONE; | |
| 2646 } /* end GetFieldName */ | |
| 2647 | |
| 2648 | |
| 2649 // declaring_class_ptr - pre-checked for NULL | |
| 2650 jvmtiError | |
| 2651 JvmtiEnv::GetFieldDeclaringClass(fieldDescriptor* fdesc_ptr, jclass* declaring_class_ptr) { | |
| 2652 | |
| 2653 *declaring_class_ptr = get_jni_class_non_null(fdesc_ptr->field_holder()); | |
| 2654 return JVMTI_ERROR_NONE; | |
| 2655 } /* end GetFieldDeclaringClass */ | |
| 2656 | |
| 2657 | |
| 2658 // modifiers_ptr - pre-checked for NULL | |
| 2659 jvmtiError | |
| 2660 JvmtiEnv::GetFieldModifiers(fieldDescriptor* fdesc_ptr, jint* modifiers_ptr) { | |
| 2661 | |
| 2662 AccessFlags resultFlags = fdesc_ptr->access_flags(); | |
| 2663 jint result = resultFlags.as_int(); | |
| 2664 *modifiers_ptr = result; | |
| 2665 | |
| 2666 return JVMTI_ERROR_NONE; | |
| 2667 } /* end GetFieldModifiers */ | |
| 2668 | |
| 2669 | |
| 2670 // is_synthetic_ptr - pre-checked for NULL | |
| 2671 jvmtiError | |
| 2672 JvmtiEnv::IsFieldSynthetic(fieldDescriptor* fdesc_ptr, jboolean* is_synthetic_ptr) { | |
| 2673 *is_synthetic_ptr = fdesc_ptr->is_synthetic(); | |
| 2674 return JVMTI_ERROR_NONE; | |
| 2675 } /* end IsFieldSynthetic */ | |
| 2676 | |
| 2677 | |
| 2678 // | |
| 2679 // Method functions | |
| 2680 // | |
| 2681 | |
| 2682 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2683 // name_ptr - NULL is a valid value, must be checked | |
| 2684 // signature_ptr - NULL is a valid value, must be checked | |
| 2685 // generic_ptr - NULL is a valid value, must be checked | |
| 2686 jvmtiError | |
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2687 JvmtiEnv::GetMethodName(Method* method_oop, char** name_ptr, char** signature_ptr, char** generic_ptr) { |
| 0 | 2688 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
| 2689 JavaThread* current_thread = JavaThread::current(); | |
| 2690 | |
| 2691 ResourceMark rm(current_thread); // get the utf8 name and signature | |
| 2692 if (name_ptr == NULL) { | |
| 2693 // just don't return the name | |
| 2694 } else { | |
| 2695 const char* utf8_name = (const char *) method_oop->name()->as_utf8(); | |
| 2696 *name_ptr = (char *) jvmtiMalloc(strlen(utf8_name)+1); | |
| 2697 strcpy(*name_ptr, utf8_name); | |
| 2698 } | |
| 2699 if (signature_ptr == NULL) { | |
| 2700 // just don't return the signature | |
| 2701 } else { | |
| 2702 const char* utf8_signature = (const char *) method_oop->signature()->as_utf8(); | |
| 2703 *signature_ptr = (char *) jvmtiMalloc(strlen(utf8_signature) + 1); | |
| 2704 strcpy(*signature_ptr, utf8_signature); | |
| 2705 } | |
| 2706 | |
| 2707 if (generic_ptr != NULL) { | |
| 2708 *generic_ptr = NULL; | |
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2709 Symbol* soop = method_oop->generic_signature(); |
| 0 | 2710 if (soop != NULL) { |
| 2711 const char* gen_sig = soop->as_C_string(); | |
| 2712 if (gen_sig != NULL) { | |
| 2713 jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr); | |
| 2714 if (err != JVMTI_ERROR_NONE) { | |
| 2715 return err; | |
| 2716 } | |
| 2717 strcpy(*generic_ptr, gen_sig); | |
| 2718 } | |
| 2719 } | |
| 2720 } | |
| 2721 return JVMTI_ERROR_NONE; | |
| 2722 } /* end GetMethodName */ | |
| 2723 | |
| 2724 | |
| 2725 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2726 // declaring_class_ptr - pre-checked for NULL | |
| 2727 jvmtiError | |
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2728 JvmtiEnv::GetMethodDeclaringClass(Method* method_oop, jclass* declaring_class_ptr) { |
| 0 | 2729 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
| 2730 (*declaring_class_ptr) = get_jni_class_non_null(method_oop->method_holder()); | |
| 2731 return JVMTI_ERROR_NONE; | |
| 2732 } /* end GetMethodDeclaringClass */ | |
| 2733 | |
| 2734 | |
| 2735 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2736 // modifiers_ptr - pre-checked for NULL | |
| 2737 jvmtiError | |
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2738 JvmtiEnv::GetMethodModifiers(Method* method_oop, jint* modifiers_ptr) { |
| 0 | 2739 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
| 2740 (*modifiers_ptr) = method_oop->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 2741 return JVMTI_ERROR_NONE; | |
| 2742 } /* end GetMethodModifiers */ | |
| 2743 | |
| 2744 | |
| 2745 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2746 // max_ptr - pre-checked for NULL | |
| 2747 jvmtiError | |
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2748 JvmtiEnv::GetMaxLocals(Method* method_oop, jint* max_ptr) { |
| 0 | 2749 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
| 2750 // get max stack | |
| 2751 (*max_ptr) = method_oop->max_locals(); | |
| 2752 return JVMTI_ERROR_NONE; | |
| 2753 } /* end GetMaxLocals */ | |
| 2754 | |
| 2755 | |
| 2756 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2757 // size_ptr - pre-checked for NULL | |
| 2758 jvmtiError | |
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2759 JvmtiEnv::GetArgumentsSize(Method* method_oop, jint* size_ptr) { |
| 0 | 2760 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
| 2761 // get size of arguments | |
| 2762 | |
| 2763 (*size_ptr) = method_oop->size_of_parameters(); | |
| 2764 return JVMTI_ERROR_NONE; | |
| 2765 } /* end GetArgumentsSize */ | |
| 2766 | |
| 2767 | |
| 2768 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2769 // entry_count_ptr - pre-checked for NULL | |
| 2770 // table_ptr - pre-checked for NULL | |
| 2771 jvmtiError | |
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2772 JvmtiEnv::GetLineNumberTable(Method* method_oop, jint* entry_count_ptr, jvmtiLineNumberEntry** table_ptr) { |
| 0 | 2773 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
| 2774 if (!method_oop->has_linenumber_table()) { | |
| 2775 return (JVMTI_ERROR_ABSENT_INFORMATION); | |
| 2776 } | |
| 2777 | |
| 2778 // The line number table is compressed so we don't know how big it is until decompressed. | |
| 2779 // Decompression is really fast so we just do it twice. | |
| 2780 | |
| 2781 // Compute size of table | |
| 2782 jint num_entries = 0; | |
| 2783 CompressedLineNumberReadStream stream(method_oop->compressed_linenumber_table()); | |
| 2784 while (stream.read_pair()) { | |
| 2785 num_entries++; | |
| 2786 } | |
| 2787 jvmtiLineNumberEntry *jvmti_table = | |
| 2788 (jvmtiLineNumberEntry *)jvmtiMalloc(num_entries * (sizeof(jvmtiLineNumberEntry))); | |
| 2789 | |
| 2790 // Fill jvmti table | |
| 2791 if (num_entries > 0) { | |
| 2792 int index = 0; | |
| 2793 CompressedLineNumberReadStream stream(method_oop->compressed_linenumber_table()); | |
| 2794 while (stream.read_pair()) { | |
| 2795 jvmti_table[index].start_location = (jlocation) stream.bci(); | |
| 2796 jvmti_table[index].line_number = (jint) stream.line(); | |
| 2797 index++; | |
| 2798 } | |
| 2799 assert(index == num_entries, "sanity check"); | |
| 2800 } | |
| 2801 | |
| 2802 // Set up results | |
| 2803 (*entry_count_ptr) = num_entries; | |
| 2804 (*table_ptr) = jvmti_table; | |
| 2805 | |
| 2806 return JVMTI_ERROR_NONE; | |
| 2807 } /* end GetLineNumberTable */ | |
| 2808 | |
| 2809 | |
| 2810 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2811 // start_location_ptr - pre-checked for NULL | |
| 2812 // end_location_ptr - pre-checked for NULL | |
| 2813 jvmtiError | |
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2814 JvmtiEnv::GetMethodLocation(Method* method_oop, jlocation* start_location_ptr, jlocation* end_location_ptr) { |
| 0 | 2815 |
| 2816 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2817 // get start and end location | |
| 2818 (*end_location_ptr) = (jlocation) (method_oop->code_size() - 1); | |
| 2819 if (method_oop->code_size() == 0) { | |
| 2820 // there is no code so there is no start location | |
| 2821 (*start_location_ptr) = (jlocation)(-1); | |
| 2822 } else { | |
| 2823 (*start_location_ptr) = (jlocation)(0); | |
| 2824 } | |
| 2825 | |
| 2826 return JVMTI_ERROR_NONE; | |
| 2827 } /* end GetMethodLocation */ | |
| 2828 | |
| 2829 | |
| 2830 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2831 // entry_count_ptr - pre-checked for NULL | |
| 2832 // table_ptr - pre-checked for NULL | |
| 2833 jvmtiError | |
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2834 JvmtiEnv::GetLocalVariableTable(Method* method_oop, jint* entry_count_ptr, jvmtiLocalVariableEntry** table_ptr) { |
| 0 | 2835 |
| 2836 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2837 JavaThread* current_thread = JavaThread::current(); | |
| 2838 | |
| 2839 // does the klass have any local variable information? | |
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2840 InstanceKlass* ik = method_oop->method_holder(); |
| 0 | 2841 if (!ik->access_flags().has_localvariable_table()) { |
| 2842 return (JVMTI_ERROR_ABSENT_INFORMATION); | |
| 2843 } | |
| 2844 | |
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2845 ConstantPool* constants = method_oop->constants(); |
| 0 | 2846 NULL_CHECK(constants, JVMTI_ERROR_ABSENT_INFORMATION); |
| 2847 | |
| 2848 // in the vm localvariable table representation, 6 consecutive elements in the table | |
| 2849 // represent a 6-tuple of shorts | |
| 2850 // [start_pc, length, name_index, descriptor_index, signature_index, index] | |
| 2851 jint num_entries = method_oop->localvariable_table_length(); | |
| 2852 jvmtiLocalVariableEntry *jvmti_table = (jvmtiLocalVariableEntry *) | |
| 2853 jvmtiMalloc(num_entries * (sizeof(jvmtiLocalVariableEntry))); | |
| 2854 | |
| 2855 if (num_entries > 0) { | |
| 2856 LocalVariableTableElement* table = method_oop->localvariable_table_start(); | |
| 2857 for (int i = 0; i < num_entries; i++) { | |
| 2858 // get the 5 tuple information from the vm table | |
| 2859 jlocation start_location = (jlocation) table[i].start_bci; | |
| 2860 jint length = (jint) table[i].length; | |
| 2861 int name_index = (int) table[i].name_cp_index; | |
| 2862 int signature_index = (int) table[i].descriptor_cp_index; | |
| 2863 int generic_signature_index = (int) table[i].signature_cp_index; | |
| 2864 jint slot = (jint) table[i].slot; | |
| 2865 | |
| 2866 // get utf8 name and signature | |
| 2867 char *name_buf = NULL; | |
| 2868 char *sig_buf = NULL; | |
| 2869 char *gen_sig_buf = NULL; | |
| 2870 { | |
| 2871 ResourceMark rm(current_thread); | |
| 2872 | |
| 2873 const char *utf8_name = (const char *) constants->symbol_at(name_index)->as_utf8(); | |
| 2874 name_buf = (char *) jvmtiMalloc(strlen(utf8_name)+1); | |
| 2875 strcpy(name_buf, utf8_name); | |
| 2876 | |
| 2877 const char *utf8_signature = (const char *) constants->symbol_at(signature_index)->as_utf8(); | |
| 2878 sig_buf = (char *) jvmtiMalloc(strlen(utf8_signature)+1); | |
| 2879 strcpy(sig_buf, utf8_signature); | |
| 2880 | |
| 2881 if (generic_signature_index > 0) { | |
| 2882 const char *utf8_gen_sign = (const char *) | |
| 2883 constants->symbol_at(generic_signature_index)->as_utf8(); | |
| 2884 gen_sig_buf = (char *) jvmtiMalloc(strlen(utf8_gen_sign)+1); | |
| 2885 strcpy(gen_sig_buf, utf8_gen_sign); | |
| 2886 } | |
| 2887 } | |
| 2888 | |
| 2889 // fill in the jvmti local variable table | |
| 2890 jvmti_table[i].start_location = start_location; | |
| 2891 jvmti_table[i].length = length; | |
| 2892 jvmti_table[i].name = name_buf; | |
| 2893 jvmti_table[i].signature = sig_buf; | |
| 2894 jvmti_table[i].generic_signature = gen_sig_buf; | |
| 2895 jvmti_table[i].slot = slot; | |
| 2896 } | |
| 2897 } | |
| 2898 | |
| 2899 // set results | |
| 2900 (*entry_count_ptr) = num_entries; | |
| 2901 (*table_ptr) = jvmti_table; | |
| 2902 | |
| 2903 return JVMTI_ERROR_NONE; | |
| 2904 } /* end GetLocalVariableTable */ | |
| 2905 | |
| 2906 | |
| 2907 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2908 // bytecode_count_ptr - pre-checked for NULL | |
| 2909 // bytecodes_ptr - pre-checked for NULL | |
| 2910 jvmtiError | |
|
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2911 JvmtiEnv::GetBytecodes(Method* method_oop, jint* bytecode_count_ptr, unsigned char** bytecodes_ptr) { |
| 0 | 2912 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
| 2913 | |
| 2914 HandleMark hm; | |
| 2915 methodHandle method(method_oop); | |
| 2916 jint size = (jint)method->code_size(); | |
| 2917 jvmtiError err = allocate(size, bytecodes_ptr); | |
| 2918 if (err != JVMTI_ERROR_NONE) { | |
| 2919 return err; | |
| 2920 } | |
| 2921 | |
| 2922 (*bytecode_count_ptr) = size; | |
| 2923 // get byte codes | |
| 2924 JvmtiClassFileReconstituter::copy_bytecodes(method, *bytecodes_ptr); | |
| 2925 | |
| 2926 return JVMTI_ERROR_NONE; | |
| 2927 } /* end GetBytecodes */ | |
| 2928 | |
| 2929 | |
| 2930 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2931 // is_native_ptr - pre-checked for NULL | |
| 2932 jvmtiError | |
|
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2933 JvmtiEnv::IsMethodNative(Method* method_oop, jboolean* is_native_ptr) { |
| 0 | 2934 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
| 2935 (*is_native_ptr) = method_oop->is_native(); | |
| 2936 return JVMTI_ERROR_NONE; | |
| 2937 } /* end IsMethodNative */ | |
| 2938 | |
| 2939 | |
| 2940 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2941 // is_synthetic_ptr - pre-checked for NULL | |
| 2942 jvmtiError | |
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2943 JvmtiEnv::IsMethodSynthetic(Method* method_oop, jboolean* is_synthetic_ptr) { |
| 0 | 2944 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
| 2945 (*is_synthetic_ptr) = method_oop->is_synthetic(); | |
| 2946 return JVMTI_ERROR_NONE; | |
| 2947 } /* end IsMethodSynthetic */ | |
| 2948 | |
| 2949 | |
| 2950 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2951 // is_obsolete_ptr - pre-checked for NULL | |
| 2952 jvmtiError | |
|
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2953 JvmtiEnv::IsMethodObsolete(Method* method_oop, jboolean* is_obsolete_ptr) { |
| 1121 | 2954 if (use_version_1_0_semantics() && |
| 2955 get_capabilities()->can_redefine_classes == 0) { | |
| 2956 // This JvmtiEnv requested version 1.0 semantics and this function | |
| 2957 // requires the can_redefine_classes capability in version 1.0 so | |
| 2958 // we need to return an error here. | |
| 2959 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; | |
| 2960 } | |
| 2961 | |
| 0 | 2962 if (method_oop == NULL || method_oop->is_obsolete()) { |
| 2963 *is_obsolete_ptr = true; | |
| 2964 } else { | |
| 2965 *is_obsolete_ptr = false; | |
| 2966 } | |
| 2967 return JVMTI_ERROR_NONE; | |
| 2968 } /* end IsMethodObsolete */ | |
| 2969 | |
| 2970 // | |
| 2971 // Raw Monitor functions | |
| 2972 // | |
| 2973 | |
| 2974 // name - pre-checked for NULL | |
| 2975 // monitor_ptr - pre-checked for NULL | |
| 2976 jvmtiError | |
| 2977 JvmtiEnv::CreateRawMonitor(const char* name, jrawMonitorID* monitor_ptr) { | |
| 2978 JvmtiRawMonitor* rmonitor = new JvmtiRawMonitor(name); | |
| 2979 NULL_CHECK(rmonitor, JVMTI_ERROR_OUT_OF_MEMORY); | |
| 2980 | |
| 2981 *monitor_ptr = (jrawMonitorID)rmonitor; | |
| 2982 | |
| 2983 return JVMTI_ERROR_NONE; | |
| 2984 } /* end CreateRawMonitor */ | |
| 2985 | |
| 2986 | |
| 2987 // rmonitor - pre-checked for validity | |
| 2988 jvmtiError | |
| 2989 JvmtiEnv::DestroyRawMonitor(JvmtiRawMonitor * rmonitor) { | |
| 2990 if (Threads::number_of_threads() == 0) { | |
| 2991 // Remove this monitor from pending raw monitors list | |
| 2992 // if it has entered in onload or start phase. | |
| 2993 JvmtiPendingMonitors::destroy(rmonitor); | |
| 2994 } else { | |
| 2995 Thread* thread = Thread::current(); | |
| 2996 if (rmonitor->is_entered(thread)) { | |
| 2997 // The caller owns this monitor which we are about to destroy. | |
| 2998 // We exit the underlying synchronization object so that the | |
| 2999 // "delete monitor" call below can work without an assertion | |
| 3000 // failure on systems that don't like destroying synchronization | |
| 3001 // objects that are locked. | |
| 3002 int r; | |
| 3003 intptr_t recursion = rmonitor->recursions(); | |
| 3004 for (intptr_t i=0; i <= recursion; i++) { | |
| 3005 r = rmonitor->raw_exit(thread); | |
| 3006 assert(r == ObjectMonitor::OM_OK, "raw_exit should have worked"); | |
| 3007 if (r != ObjectMonitor::OM_OK) { // robustness | |
| 3008 return JVMTI_ERROR_INTERNAL; | |
| 3009 } | |
| 3010 } | |
| 3011 } | |
| 3012 if (rmonitor->owner() != NULL) { | |
| 3013 // The caller is trying to destroy a monitor that is locked by | |
| 3014 // someone else. While this is not forbidden by the JVMTI | |
| 3015 // spec, it will cause an assertion failure on systems that don't | |
| 3016 // like destroying synchronization objects that are locked. | |
| 3017 // We indicate a problem with the error return (and leak the | |
| 3018 // monitor's memory). | |
| 3019 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
| 3020 } | |
| 3021 } | |
| 3022 | |
| 3023 delete rmonitor; | |
| 3024 | |
| 3025 return JVMTI_ERROR_NONE; | |
| 3026 } /* end DestroyRawMonitor */ | |
| 3027 | |
| 3028 | |
| 3029 // rmonitor - pre-checked for validity | |
| 3030 jvmtiError | |
| 3031 JvmtiEnv::RawMonitorEnter(JvmtiRawMonitor * rmonitor) { | |
| 3032 if (Threads::number_of_threads() == 0) { | |
| 3033 // No JavaThreads exist so ObjectMonitor enter cannot be | |
| 3034 // used, add this raw monitor to the pending list. | |
| 3035 // The pending monitors will be actually entered when | |
| 3036 // the VM is setup. | |
| 3037 // See transition_pending_raw_monitors in create_vm() | |
| 3038 // in thread.cpp. | |
| 3039 JvmtiPendingMonitors::enter(rmonitor); | |
| 3040 } else { | |
| 3041 int r; | |
| 3042 Thread* thread = Thread::current(); | |
| 3043 | |
| 3044 if (thread->is_Java_thread()) { | |
| 3045 JavaThread* current_thread = (JavaThread*)thread; | |
| 3046 | |
| 3047 #ifdef PROPER_TRANSITIONS | |
| 3048 // Not really unknown but ThreadInVMfromNative does more than we want | |
| 3049 ThreadInVMfromUnknown __tiv; | |
| 3050 { | |
| 3051 ThreadBlockInVM __tbivm(current_thread); | |
| 3052 r = rmonitor->raw_enter(current_thread); | |
| 3053 } | |
| 3054 #else | |
| 3055 /* Transition to thread_blocked without entering vm state */ | |
| 3056 /* This is really evil. Normally you can't undo _thread_blocked */ | |
| 3057 /* transitions like this because it would cause us to miss a */ | |
| 3058 /* safepoint but since the thread was already in _thread_in_native */ | |
| 3059 /* the thread is not leaving a safepoint safe state and it will */ | |
| 3060 /* block when it tries to return from native. We can't safepoint */ | |
| 3061 /* block in here because we could deadlock the vmthread. Blech. */ | |
| 3062 | |
| 3063 JavaThreadState state = current_thread->thread_state(); | |
| 3064 assert(state == _thread_in_native, "Must be _thread_in_native"); | |
| 3065 // frame should already be walkable since we are in native | |
| 3066 assert(!current_thread->has_last_Java_frame() || | |
| 3067 current_thread->frame_anchor()->walkable(), "Must be walkable"); | |
| 3068 current_thread->set_thread_state(_thread_blocked); | |
| 3069 | |
| 3070 r = rmonitor->raw_enter(current_thread); | |
| 3071 // restore state, still at a safepoint safe state | |
| 3072 current_thread->set_thread_state(state); | |
| 3073 | |
| 3074 #endif /* PROPER_TRANSITIONS */ | |
| 3075 assert(r == ObjectMonitor::OM_OK, "raw_enter should have worked"); | |
| 3076 } else { | |
| 3077 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
| 3078 r = rmonitor->raw_enter(thread); | |
| 3079 } else { | |
| 3080 ShouldNotReachHere(); | |
| 3081 } | |
| 3082 } | |
| 3083 | |
| 3084 if (r != ObjectMonitor::OM_OK) { // robustness | |
| 3085 return JVMTI_ERROR_INTERNAL; | |
| 3086 } | |
| 3087 } | |
| 3088 return JVMTI_ERROR_NONE; | |
| 3089 } /* end RawMonitorEnter */ | |
| 3090 | |
| 3091 | |
| 3092 // rmonitor - pre-checked for validity | |
| 3093 jvmtiError | |
| 3094 JvmtiEnv::RawMonitorExit(JvmtiRawMonitor * rmonitor) { | |
| 3095 jvmtiError err = JVMTI_ERROR_NONE; | |
| 3096 | |
| 3097 if (Threads::number_of_threads() == 0) { | |
| 3098 // No JavaThreads exist so just remove this monitor from the pending list. | |
| 3099 // Bool value from exit is false if rmonitor is not in the list. | |
| 3100 if (!JvmtiPendingMonitors::exit(rmonitor)) { | |
| 3101 err = JVMTI_ERROR_NOT_MONITOR_OWNER; | |
| 3102 } | |
| 3103 } else { | |
| 3104 int r; | |
| 3105 Thread* thread = Thread::current(); | |
| 3106 | |
| 3107 if (thread->is_Java_thread()) { | |
| 3108 JavaThread* current_thread = (JavaThread*)thread; | |
| 3109 #ifdef PROPER_TRANSITIONS | |
| 3110 // Not really unknown but ThreadInVMfromNative does more than we want | |
| 3111 ThreadInVMfromUnknown __tiv; | |
| 3112 #endif /* PROPER_TRANSITIONS */ | |
| 3113 r = rmonitor->raw_exit(current_thread); | |
| 3114 } else { | |
| 3115 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
| 3116 r = rmonitor->raw_exit(thread); | |
| 3117 } else { | |
| 3118 ShouldNotReachHere(); | |
| 3119 } | |
| 3120 } | |
| 3121 | |
| 3122 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
| 3123 err = JVMTI_ERROR_NOT_MONITOR_OWNER; | |
| 3124 } else { | |
| 3125 assert(r == ObjectMonitor::OM_OK, "raw_exit should have worked"); | |
| 3126 if (r != ObjectMonitor::OM_OK) { // robustness | |
| 3127 err = JVMTI_ERROR_INTERNAL; | |
| 3128 } | |
| 3129 } | |
| 3130 } | |
| 3131 return err; | |
| 3132 } /* end RawMonitorExit */ | |
| 3133 | |
| 3134 | |
| 3135 // rmonitor - pre-checked for validity | |
| 3136 jvmtiError | |
| 3137 JvmtiEnv::RawMonitorWait(JvmtiRawMonitor * rmonitor, jlong millis) { | |
| 3138 int r; | |
| 3139 Thread* thread = Thread::current(); | |
| 3140 | |
| 3141 if (thread->is_Java_thread()) { | |
| 3142 JavaThread* current_thread = (JavaThread*)thread; | |
| 3143 #ifdef PROPER_TRANSITIONS | |
| 3144 // Not really unknown but ThreadInVMfromNative does more than we want | |
| 3145 ThreadInVMfromUnknown __tiv; | |
| 3146 { | |
| 3147 ThreadBlockInVM __tbivm(current_thread); | |
| 3148 r = rmonitor->raw_wait(millis, true, current_thread); | |
| 3149 } | |
| 3150 #else | |
| 3151 /* Transition to thread_blocked without entering vm state */ | |
| 3152 /* This is really evil. Normally you can't undo _thread_blocked */ | |
| 3153 /* transitions like this because it would cause us to miss a */ | |
| 3154 /* safepoint but since the thread was already in _thread_in_native */ | |
| 3155 /* the thread is not leaving a safepoint safe state and it will */ | |
| 3156 /* block when it tries to return from native. We can't safepoint */ | |
| 3157 /* block in here because we could deadlock the vmthread. Blech. */ | |
| 3158 | |
| 3159 JavaThreadState state = current_thread->thread_state(); | |
| 3160 assert(state == _thread_in_native, "Must be _thread_in_native"); | |
| 3161 // frame should already be walkable since we are in native | |
| 3162 assert(!current_thread->has_last_Java_frame() || | |
| 3163 current_thread->frame_anchor()->walkable(), "Must be walkable"); | |
| 3164 current_thread->set_thread_state(_thread_blocked); | |
| 3165 | |
| 3166 r = rmonitor->raw_wait(millis, true, current_thread); | |
| 3167 // restore state, still at a safepoint safe state | |
| 3168 current_thread->set_thread_state(state); | |
| 3169 | |
| 3170 #endif /* PROPER_TRANSITIONS */ | |
| 3171 } else { | |
| 3172 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
| 3173 r = rmonitor->raw_wait(millis, true, thread); | |
| 3174 } else { | |
| 3175 ShouldNotReachHere(); | |
| 3176 } | |
| 3177 } | |
| 3178 | |
| 3179 switch (r) { | |
| 3180 case ObjectMonitor::OM_INTERRUPTED: | |
| 3181 return JVMTI_ERROR_INTERRUPT; | |
| 3182 case ObjectMonitor::OM_ILLEGAL_MONITOR_STATE: | |
| 3183 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
| 3184 } | |
| 3185 assert(r == ObjectMonitor::OM_OK, "raw_wait should have worked"); | |
| 3186 if (r != ObjectMonitor::OM_OK) { // robustness | |
| 3187 return JVMTI_ERROR_INTERNAL; | |
| 3188 } | |
| 3189 | |
| 3190 return JVMTI_ERROR_NONE; | |
| 3191 } /* end RawMonitorWait */ | |
| 3192 | |
| 3193 | |
| 3194 // rmonitor - pre-checked for validity | |
| 3195 jvmtiError | |
| 3196 JvmtiEnv::RawMonitorNotify(JvmtiRawMonitor * rmonitor) { | |
| 3197 int r; | |
| 3198 Thread* thread = Thread::current(); | |
| 3199 | |
| 3200 if (thread->is_Java_thread()) { | |
| 3201 JavaThread* current_thread = (JavaThread*)thread; | |
| 3202 // Not really unknown but ThreadInVMfromNative does more than we want | |
| 3203 ThreadInVMfromUnknown __tiv; | |
| 3204 r = rmonitor->raw_notify(current_thread); | |
| 3205 } else { | |
| 3206 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
| 3207 r = rmonitor->raw_notify(thread); | |
| 3208 } else { | |
| 3209 ShouldNotReachHere(); | |
| 3210 } | |
| 3211 } | |
| 3212 | |
| 3213 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
| 3214 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
| 3215 } | |
| 3216 assert(r == ObjectMonitor::OM_OK, "raw_notify should have worked"); | |
| 3217 if (r != ObjectMonitor::OM_OK) { // robustness | |
| 3218 return JVMTI_ERROR_INTERNAL; | |
| 3219 } | |
| 3220 | |
| 3221 return JVMTI_ERROR_NONE; | |
| 3222 } /* end RawMonitorNotify */ | |
| 3223 | |
| 3224 | |
| 3225 // rmonitor - pre-checked for validity | |
| 3226 jvmtiError | |
| 3227 JvmtiEnv::RawMonitorNotifyAll(JvmtiRawMonitor * rmonitor) { | |
| 3228 int r; | |
| 3229 Thread* thread = Thread::current(); | |
| 3230 | |
| 3231 if (thread->is_Java_thread()) { | |
| 3232 JavaThread* current_thread = (JavaThread*)thread; | |
| 3233 ThreadInVMfromUnknown __tiv; | |
| 3234 r = rmonitor->raw_notifyAll(current_thread); | |
| 3235 } else { | |
| 3236 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
| 3237 r = rmonitor->raw_notifyAll(thread); | |
| 3238 } else { | |
| 3239 ShouldNotReachHere(); | |
| 3240 } | |
| 3241 } | |
| 3242 | |
| 3243 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
| 3244 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
| 3245 } | |
| 3246 assert(r == ObjectMonitor::OM_OK, "raw_notifyAll should have worked"); | |
| 3247 if (r != ObjectMonitor::OM_OK) { // robustness | |
| 3248 return JVMTI_ERROR_INTERNAL; | |
| 3249 } | |
| 3250 | |
| 3251 return JVMTI_ERROR_NONE; | |
| 3252 } /* end RawMonitorNotifyAll */ | |
| 3253 | |
| 3254 | |
| 3255 // | |
| 3256 // JNI Function Interception functions | |
| 3257 // | |
| 3258 | |
| 3259 | |
| 3260 // function_table - pre-checked for NULL | |
| 3261 jvmtiError | |
| 3262 JvmtiEnv::SetJNIFunctionTable(const jniNativeInterface* function_table) { | |
| 3263 // Copy jni function table at safepoint. | |
| 3264 VM_JNIFunctionTableCopier copier(function_table); | |
| 3265 VMThread::execute(&copier); | |
| 3266 | |
| 3267 return JVMTI_ERROR_NONE; | |
| 3268 } /* end SetJNIFunctionTable */ | |
| 3269 | |
| 3270 | |
| 3271 // function_table - pre-checked for NULL | |
| 3272 jvmtiError | |
| 3273 JvmtiEnv::GetJNIFunctionTable(jniNativeInterface** function_table) { | |
| 3274 *function_table=(jniNativeInterface*)jvmtiMalloc(sizeof(jniNativeInterface)); | |
| 3275 if (*function_table == NULL) | |
| 3276 return JVMTI_ERROR_OUT_OF_MEMORY; | |
| 3277 memcpy(*function_table,(JavaThread::current())->get_jni_functions(),sizeof(jniNativeInterface)); | |
| 3278 return JVMTI_ERROR_NONE; | |
| 3279 } /* end GetJNIFunctionTable */ | |
| 3280 | |
| 3281 | |
| 3282 // | |
| 3283 // Event Management functions | |
| 3284 // | |
| 3285 | |
| 3286 jvmtiError | |
| 3287 JvmtiEnv::GenerateEvents(jvmtiEvent event_type) { | |
| 3288 // can only generate two event types | |
| 3289 if (event_type != JVMTI_EVENT_COMPILED_METHOD_LOAD && | |
| 3290 event_type != JVMTI_EVENT_DYNAMIC_CODE_GENERATED) { | |
| 3291 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
| 3292 } | |
| 3293 | |
| 3294 // for compiled_method_load events we must check that the environment | |
| 3295 // has the can_generate_compiled_method_load_events capability. | |
| 3296 if (event_type == JVMTI_EVENT_COMPILED_METHOD_LOAD) { | |
| 3297 if (get_capabilities()->can_generate_compiled_method_load_events == 0) { | |
| 3298 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; | |
| 3299 } | |
| 3300 return JvmtiCodeBlobEvents::generate_compiled_method_load_events(this); | |
| 3301 } else { | |
| 3302 return JvmtiCodeBlobEvents::generate_dynamic_code_events(this); | |
| 3303 } | |
| 3304 | |
| 3305 } /* end GenerateEvents */ | |
| 3306 | |
| 3307 | |
| 3308 // | |
| 3309 // Extension Mechanism functions | |
| 3310 // | |
| 3311 | |
| 3312 // extension_count_ptr - pre-checked for NULL | |
| 3313 // extensions - pre-checked for NULL | |
| 3314 jvmtiError | |
| 3315 JvmtiEnv::GetExtensionFunctions(jint* extension_count_ptr, jvmtiExtensionFunctionInfo** extensions) { | |
| 3316 return JvmtiExtensions::get_functions(this, extension_count_ptr, extensions); | |
| 3317 } /* end GetExtensionFunctions */ | |
| 3318 | |
| 3319 | |
| 3320 // extension_count_ptr - pre-checked for NULL | |
| 3321 // extensions - pre-checked for NULL | |
| 3322 jvmtiError | |
| 3323 JvmtiEnv::GetExtensionEvents(jint* extension_count_ptr, jvmtiExtensionEventInfo** extensions) { | |
| 3324 return JvmtiExtensions::get_events(this, extension_count_ptr, extensions); | |
| 3325 } /* end GetExtensionEvents */ | |
| 3326 | |
| 3327 | |
| 3328 // callback - NULL is a valid value, must be checked | |
| 3329 jvmtiError | |
| 3330 JvmtiEnv::SetExtensionEventCallback(jint extension_event_index, jvmtiExtensionEvent callback) { | |
| 3331 return JvmtiExtensions::set_event_callback(this, extension_event_index, callback); | |
| 3332 } /* end SetExtensionEventCallback */ | |
| 3333 | |
| 3334 // | |
| 3335 // Timers functions | |
| 3336 // | |
| 3337 | |
| 3338 // info_ptr - pre-checked for NULL | |
| 3339 jvmtiError | |
| 3340 JvmtiEnv::GetCurrentThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) { | |
| 3341 os::current_thread_cpu_time_info(info_ptr); | |
| 3342 return JVMTI_ERROR_NONE; | |
| 3343 } /* end GetCurrentThreadCpuTimerInfo */ | |
| 3344 | |
| 3345 | |
| 3346 // nanos_ptr - pre-checked for NULL | |
| 3347 jvmtiError | |
| 3348 JvmtiEnv::GetCurrentThreadCpuTime(jlong* nanos_ptr) { | |
| 3349 *nanos_ptr = os::current_thread_cpu_time(); | |
| 3350 return JVMTI_ERROR_NONE; | |
| 3351 } /* end GetCurrentThreadCpuTime */ | |
| 3352 | |
| 3353 | |
| 3354 // info_ptr - pre-checked for NULL | |
| 3355 jvmtiError | |
| 3356 JvmtiEnv::GetThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) { | |
| 3357 os::thread_cpu_time_info(info_ptr); | |
| 3358 return JVMTI_ERROR_NONE; | |
| 3359 } /* end GetThreadCpuTimerInfo */ | |
| 3360 | |
| 3361 | |
| 3362 // Threads_lock NOT held, java_thread not protected by lock | |
| 3363 // java_thread - pre-checked | |
| 3364 // nanos_ptr - pre-checked for NULL | |
| 3365 jvmtiError | |
| 3366 JvmtiEnv::GetThreadCpuTime(JavaThread* java_thread, jlong* nanos_ptr) { | |
| 3367 *nanos_ptr = os::thread_cpu_time(java_thread); | |
| 3368 return JVMTI_ERROR_NONE; | |
| 3369 } /* end GetThreadCpuTime */ | |
| 3370 | |
| 3371 | |
| 3372 // info_ptr - pre-checked for NULL | |
| 3373 jvmtiError | |
| 3374 JvmtiEnv::GetTimerInfo(jvmtiTimerInfo* info_ptr) { | |
| 3375 os::javaTimeNanos_info(info_ptr); | |
| 3376 return JVMTI_ERROR_NONE; | |
| 3377 } /* end GetTimerInfo */ | |
| 3378 | |
| 3379 | |
| 3380 // nanos_ptr - pre-checked for NULL | |
| 3381 jvmtiError | |
| 3382 JvmtiEnv::GetTime(jlong* nanos_ptr) { | |
| 3383 *nanos_ptr = os::javaTimeNanos(); | |
| 3384 return JVMTI_ERROR_NONE; | |
| 3385 } /* end GetTime */ | |
| 3386 | |
| 3387 | |
| 3388 // processor_count_ptr - pre-checked for NULL | |
| 3389 jvmtiError | |
| 3390 JvmtiEnv::GetAvailableProcessors(jint* processor_count_ptr) { | |
| 3391 *processor_count_ptr = os::active_processor_count(); | |
| 3392 return JVMTI_ERROR_NONE; | |
| 3393 } /* end GetAvailableProcessors */ | |
| 3394 | |
| 3395 // | |
| 3396 // System Properties functions | |
| 3397 // | |
| 3398 | |
| 3399 // count_ptr - pre-checked for NULL | |
| 3400 // property_ptr - pre-checked for NULL | |
| 3401 jvmtiError | |
| 3402 JvmtiEnv::GetSystemProperties(jint* count_ptr, char*** property_ptr) { | |
| 3403 jvmtiError err = JVMTI_ERROR_NONE; | |
| 3404 | |
| 3405 *count_ptr = Arguments::PropertyList_count(Arguments::system_properties()); | |
| 3406 | |
| 3407 err = allocate(*count_ptr * sizeof(char *), (unsigned char **)property_ptr); | |
| 3408 if (err != JVMTI_ERROR_NONE) { | |
| 3409 return err; | |
| 3410 } | |
| 3411 int i = 0 ; | |
| 3412 for (SystemProperty* p = Arguments::system_properties(); p != NULL && i < *count_ptr; p = p->next(), i++) { | |
| 3413 const char *key = p->key(); | |
| 3414 char **tmp_value = *property_ptr+i; | |
| 3415 err = allocate((strlen(key)+1) * sizeof(char), (unsigned char**)tmp_value); | |
| 3416 if (err == JVMTI_ERROR_NONE) { | |
| 3417 strcpy(*tmp_value, key); | |
| 3418 } else { | |
| 3419 // clean up previously allocated memory. | |
| 3420 for (int j=0; j<i; j++) { | |
| 3421 Deallocate((unsigned char*)*property_ptr+j); | |
| 3422 } | |
| 3423 Deallocate((unsigned char*)property_ptr); | |
| 3424 break; | |
| 3425 } | |
| 3426 } | |
| 3427 return err; | |
| 3428 } /* end GetSystemProperties */ | |
| 3429 | |
| 3430 | |
| 3431 // property - pre-checked for NULL | |
| 3432 // value_ptr - pre-checked for NULL | |
| 3433 jvmtiError | |
| 3434 JvmtiEnv::GetSystemProperty(const char* property, char** value_ptr) { | |
| 3435 jvmtiError err = JVMTI_ERROR_NONE; | |
| 3436 const char *value; | |
| 3437 | |
| 3438 value = Arguments::PropertyList_get_value(Arguments::system_properties(), property); | |
| 3439 if (value == NULL) { | |
| 3440 err = JVMTI_ERROR_NOT_AVAILABLE; | |
| 3441 } else { | |
| 3442 err = allocate((strlen(value)+1) * sizeof(char), (unsigned char **)value_ptr); | |
| 3443 if (err == JVMTI_ERROR_NONE) { | |
| 3444 strcpy(*value_ptr, value); | |
| 3445 } | |
| 3446 } | |
| 3447 return err; | |
| 3448 } /* end GetSystemProperty */ | |
| 3449 | |
| 3450 | |
| 3451 // property - pre-checked for NULL | |
| 3452 // value - NULL is a valid value, must be checked | |
| 3453 jvmtiError | |
|
2100
b1a2afa37ec4
7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents:
2019
diff
changeset
|
3454 JvmtiEnv::SetSystemProperty(const char* property, const char* value_ptr) { |
| 0 | 3455 jvmtiError err =JVMTI_ERROR_NOT_AVAILABLE; |
| 3456 | |
| 3457 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
| 3458 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
|
3459 if (p->set_value((char *)value_ptr)) { |
| 0 | 3460 err = JVMTI_ERROR_NONE; |
| 3461 } | |
| 3462 } | |
| 3463 } | |
| 3464 return err; | |
| 3465 } /* end SetSystemProperty */ |