Mercurial > hg > graal-compiler
annotate src/share/vm/prims/jvmtiEnv.cpp @ 10408:836a62f43af9
Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/
| author | Doug Simon <doug.simon@oracle.com> |
|---|---|
| date | Wed, 19 Jun 2013 10:45:56 +0200 |
| parents | 5fc51c1ecdeb c115fac239eb |
| children | 096c224171c4 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 7951 | 2 * Copyright (c) 2003, 2013, 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 oop cplock = constants->lock(); |
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263 ObjectLocker ol(cplock, current_thread, cplock != NULL); // lock constant pool while we query it |
| 0 | 264 |
| 265 JvmtiClassFileReconstituter reconstituter(ikh); | |
| 266 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
| 267 return reconstituter.get_error(); | |
| 268 } | |
| 269 | |
| 270 class_definitions[index].class_byte_count = (jint)reconstituter.class_file_size(); | |
| 271 class_definitions[index].class_bytes = (unsigned char*) | |
| 272 reconstituter.class_file_bytes(); | |
| 273 } else { | |
| 274 // it is cached, get it from the cache | |
| 275 class_definitions[index].class_byte_count = ikh->get_cached_class_file_len(); | |
| 276 class_definitions[index].class_bytes = ikh->get_cached_class_file_bytes(); | |
| 277 } | |
| 278 class_definitions[index].klass = jcls; | |
| 279 } | |
| 280 VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_retransform); | |
| 281 VMThread::execute(&op); | |
| 282 return (op.check_error()); | |
| 283 } /* end RetransformClasses */ | |
| 284 | |
| 285 | |
| 286 // class_count - pre-checked to be greater than or equal to 0 | |
| 287 // class_definitions - pre-checked for NULL | |
| 288 jvmtiError | |
| 289 JvmtiEnv::RedefineClasses(jint class_count, const jvmtiClassDefinition* class_definitions) { | |
| 290 //TODO: add locking | |
| 291 VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_redefine); | |
| 292 VMThread::execute(&op); | |
| 293 return (op.check_error()); | |
| 294 } /* end RedefineClasses */ | |
| 295 | |
| 296 | |
| 297 // | |
| 298 // Object functions | |
| 299 // | |
| 300 | |
| 301 // size_ptr - pre-checked for NULL | |
| 302 jvmtiError | |
| 303 JvmtiEnv::GetObjectSize(jobject object, jlong* size_ptr) { | |
| 304 oop mirror = JNIHandles::resolve_external_guard(object); | |
| 305 NULL_CHECK(mirror, JVMTI_ERROR_INVALID_OBJECT); | |
| 306 | |
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307 if (mirror->klass() == SystemDictionary::Class_klass() && |
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308 !java_lang_Class::is_primitive(mirror)) { |
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309 Klass* k = java_lang_Class::as_Klass(mirror); |
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310 assert(k != NULL, "class for non-primitive mirror must exist"); |
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311 *size_ptr = k->size() * wordSize; |
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312 } else { |
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313 *size_ptr = mirror->size() * wordSize; |
| 0 | 314 } |
| 315 return JVMTI_ERROR_NONE; | |
| 316 } /* end GetObjectSize */ | |
| 317 | |
| 318 // | |
| 319 // Method functions | |
| 320 // | |
| 321 | |
| 322 // prefix - NULL is a valid value, must be checked | |
| 323 jvmtiError | |
| 324 JvmtiEnv::SetNativeMethodPrefix(const char* prefix) { | |
| 325 return prefix == NULL? | |
| 326 SetNativeMethodPrefixes(0, NULL) : | |
| 327 SetNativeMethodPrefixes(1, (char**)&prefix); | |
| 328 } /* end SetNativeMethodPrefix */ | |
| 329 | |
| 330 | |
| 331 // prefix_count - pre-checked to be greater than or equal to 0 | |
| 332 // prefixes - pre-checked for NULL | |
| 333 jvmtiError | |
| 334 JvmtiEnv::SetNativeMethodPrefixes(jint prefix_count, char** prefixes) { | |
| 335 // Have to grab JVMTI thread state lock to be sure that some thread | |
| 336 // isn't accessing the prefixes at the same time we are setting them. | |
| 337 // No locks during VM bring-up. | |
| 338 if (Threads::number_of_threads() == 0) { | |
| 339 return set_native_method_prefixes(prefix_count, prefixes); | |
| 340 } else { | |
| 341 MutexLocker mu(JvmtiThreadState_lock); | |
| 342 return set_native_method_prefixes(prefix_count, prefixes); | |
| 343 } | |
| 344 } /* end SetNativeMethodPrefixes */ | |
| 345 | |
| 346 // | |
| 347 // Event Management functions | |
| 348 // | |
| 349 | |
| 350 // callbacks - NULL is a valid value, must be checked | |
| 351 // size_of_callbacks - pre-checked to be greater than or equal to 0 | |
| 352 jvmtiError | |
| 353 JvmtiEnv::SetEventCallbacks(const jvmtiEventCallbacks* callbacks, jint size_of_callbacks) { | |
| 354 JvmtiEventController::set_event_callbacks(this, callbacks, size_of_callbacks); | |
| 355 return JVMTI_ERROR_NONE; | |
| 356 } /* end SetEventCallbacks */ | |
| 357 | |
| 358 | |
| 359 // event_thread - NULL is a valid value, must be checked | |
| 360 jvmtiError | |
| 361 JvmtiEnv::SetEventNotificationMode(jvmtiEventMode mode, jvmtiEvent event_type, jthread event_thread, ...) { | |
| 362 JavaThread* java_thread = NULL; | |
| 363 if (event_thread != NULL) { | |
| 364 oop thread_oop = JNIHandles::resolve_external_guard(event_thread); | |
| 365 if (thread_oop == NULL) { | |
| 366 return JVMTI_ERROR_INVALID_THREAD; | |
| 367 } | |
| 1142 | 368 if (!thread_oop->is_a(SystemDictionary::Thread_klass())) { |
| 0 | 369 return JVMTI_ERROR_INVALID_THREAD; |
| 370 } | |
| 371 java_thread = java_lang_Thread::thread(thread_oop); | |
| 372 if (java_thread == NULL) { | |
| 373 return JVMTI_ERROR_THREAD_NOT_ALIVE; | |
| 374 } | |
| 375 } | |
| 376 | |
| 377 // event_type must be valid | |
| 378 if (!JvmtiEventController::is_valid_event_type(event_type)) { | |
| 379 return JVMTI_ERROR_INVALID_EVENT_TYPE; | |
| 380 } | |
| 381 | |
| 382 // global events cannot be controlled at thread level. | |
| 383 if (java_thread != NULL && JvmtiEventController::is_global_event(event_type)) { | |
| 384 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
| 385 } | |
| 386 | |
| 387 bool enabled = (mode == JVMTI_ENABLE); | |
| 388 | |
| 389 // assure that needed capabilities are present | |
| 390 if (enabled && !JvmtiUtil::has_event_capability(event_type, get_capabilities())) { | |
| 391 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; | |
| 392 } | |
| 393 | |
| 394 if (event_type == JVMTI_EVENT_CLASS_FILE_LOAD_HOOK && enabled) { | |
| 395 record_class_file_load_hook_enabled(); | |
| 396 } | |
| 397 JvmtiEventController::set_user_enabled(this, java_thread, event_type, enabled); | |
| 398 | |
| 399 return JVMTI_ERROR_NONE; | |
| 400 } /* end SetEventNotificationMode */ | |
| 401 | |
| 402 // | |
| 403 // Capability functions | |
| 404 // | |
| 405 | |
| 406 // capabilities_ptr - pre-checked for NULL | |
| 407 jvmtiError | |
| 408 JvmtiEnv::GetPotentialCapabilities(jvmtiCapabilities* capabilities_ptr) { | |
| 409 JvmtiManageCapabilities::get_potential_capabilities(get_capabilities(), | |
| 410 get_prohibited_capabilities(), | |
| 411 capabilities_ptr); | |
| 412 return JVMTI_ERROR_NONE; | |
| 413 } /* end GetPotentialCapabilities */ | |
| 414 | |
| 415 | |
| 416 // capabilities_ptr - pre-checked for NULL | |
| 417 jvmtiError | |
| 418 JvmtiEnv::AddCapabilities(const jvmtiCapabilities* capabilities_ptr) { | |
| 419 return JvmtiManageCapabilities::add_capabilities(get_capabilities(), | |
| 420 get_prohibited_capabilities(), | |
| 421 capabilities_ptr, | |
| 422 get_capabilities()); | |
| 423 } /* end AddCapabilities */ | |
| 424 | |
| 425 | |
| 426 // capabilities_ptr - pre-checked for NULL | |
| 427 jvmtiError | |
| 428 JvmtiEnv::RelinquishCapabilities(const jvmtiCapabilities* capabilities_ptr) { | |
| 429 JvmtiManageCapabilities::relinquish_capabilities(get_capabilities(), capabilities_ptr, get_capabilities()); | |
| 430 return JVMTI_ERROR_NONE; | |
| 431 } /* end RelinquishCapabilities */ | |
| 432 | |
| 433 | |
| 434 // capabilities_ptr - pre-checked for NULL | |
| 435 jvmtiError | |
| 436 JvmtiEnv::GetCapabilities(jvmtiCapabilities* capabilities_ptr) { | |
| 437 JvmtiManageCapabilities::copy_capabilities(get_capabilities(), capabilities_ptr); | |
| 438 return JVMTI_ERROR_NONE; | |
| 439 } /* end GetCapabilities */ | |
| 440 | |
| 441 // | |
| 442 // Class Loader Search functions | |
| 443 // | |
| 444 | |
| 445 // segment - pre-checked for NULL | |
| 446 jvmtiError | |
| 447 JvmtiEnv::AddToBootstrapClassLoaderSearch(const char* segment) { | |
| 448 jvmtiPhase phase = get_phase(); | |
| 449 if (phase == JVMTI_PHASE_ONLOAD) { | |
| 450 Arguments::append_sysclasspath(segment); | |
| 451 return JVMTI_ERROR_NONE; | |
| 1121 | 452 } else if (use_version_1_0_semantics()) { |
| 453 // This JvmtiEnv requested version 1.0 semantics and this function | |
| 454 // is only allowed in the ONLOAD phase in version 1.0 so we need to | |
| 455 // return an error here. | |
| 456 return JVMTI_ERROR_WRONG_PHASE; | |
|
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457 } else if (phase == JVMTI_PHASE_LIVE) { |
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458 // The phase is checked by the wrapper that called this function, |
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459 // but this thread could be racing with the thread that is |
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460 // terminating the VM so we check one more time. |
| 0 | 461 |
| 462 // create the zip entry | |
| 463 ClassPathZipEntry* zip_entry = ClassLoader::create_class_path_zip_entry(segment); | |
| 464 if (zip_entry == NULL) { | |
| 465 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
| 466 } | |
| 467 | |
| 468 // lock the loader | |
| 469 Thread* thread = Thread::current(); | |
| 470 HandleMark hm; | |
| 471 Handle loader_lock = Handle(thread, SystemDictionary::system_loader_lock()); | |
| 472 | |
| 473 ObjectLocker ol(loader_lock, thread); | |
| 474 | |
| 475 // add the jar file to the bootclasspath | |
| 476 if (TraceClassLoading) { | |
| 477 tty->print_cr("[Opened %s]", zip_entry->name()); | |
| 478 } | |
| 479 ClassLoader::add_to_list(zip_entry); | |
| 480 return JVMTI_ERROR_NONE; | |
|
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481 } else { |
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482 return JVMTI_ERROR_WRONG_PHASE; |
| 0 | 483 } |
| 484 | |
| 485 } /* end AddToBootstrapClassLoaderSearch */ | |
| 486 | |
| 487 | |
| 488 // segment - pre-checked for NULL | |
| 489 jvmtiError | |
| 490 JvmtiEnv::AddToSystemClassLoaderSearch(const char* segment) { | |
| 491 jvmtiPhase phase = get_phase(); | |
| 492 | |
| 493 if (phase == JVMTI_PHASE_ONLOAD) { | |
| 494 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
| 495 if (strcmp("java.class.path", p->key()) == 0) { | |
| 496 p->append_value(segment); | |
| 497 break; | |
| 498 } | |
| 499 } | |
| 500 return JVMTI_ERROR_NONE; | |
|
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501 } else if (phase == JVMTI_PHASE_LIVE) { |
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502 // The phase is checked by the wrapper that called this function, |
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503 // but this thread could be racing with the thread that is |
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504 // terminating the VM so we check one more time. |
| 0 | 505 HandleMark hm; |
| 506 | |
| 507 // create the zip entry (which will open the zip file and hence | |
| 508 // check that the segment is indeed a zip file). | |
| 509 ClassPathZipEntry* zip_entry = ClassLoader::create_class_path_zip_entry(segment); | |
| 510 if (zip_entry == NULL) { | |
| 511 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
| 512 } | |
| 513 delete zip_entry; // no longer needed | |
| 514 | |
| 515 // lock the loader | |
| 516 Thread* THREAD = Thread::current(); | |
| 517 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); | |
| 518 | |
| 519 ObjectLocker ol(loader, THREAD); | |
| 520 | |
| 521 // need the path as java.lang.String | |
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522 Handle path = java_lang_String::create_from_platform_dependent_str(segment, THREAD); |
| 0 | 523 if (HAS_PENDING_EXCEPTION) { |
| 524 CLEAR_PENDING_EXCEPTION; | |
| 525 return JVMTI_ERROR_INTERNAL; | |
| 526 } | |
| 527 | |
| 528 instanceKlassHandle loader_ik(THREAD, loader->klass()); | |
| 529 | |
| 530 // Invoke the appendToClassPathForInstrumentation method - if the method | |
| 531 // is not found it means the loader doesn't support adding to the class path | |
| 532 // in the live phase. | |
| 533 { | |
| 534 JavaValue res(T_VOID); | |
| 535 JavaCalls::call_special(&res, | |
| 536 loader, | |
| 537 loader_ik, | |
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538 vmSymbols::appendToClassPathForInstrumentation_name(), |
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539 vmSymbols::appendToClassPathForInstrumentation_signature(), |
| 0 | 540 path, |
| 541 THREAD); | |
| 542 if (HAS_PENDING_EXCEPTION) { | |
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543 Symbol* ex_name = PENDING_EXCEPTION->klass()->name(); |
| 0 | 544 CLEAR_PENDING_EXCEPTION; |
| 545 | |
| 546 if (ex_name == vmSymbols::java_lang_NoSuchMethodError()) { | |
| 547 return JVMTI_ERROR_CLASS_LOADER_UNSUPPORTED; | |
| 548 } else { | |
| 549 return JVMTI_ERROR_INTERNAL; | |
| 550 } | |
| 551 } | |
| 552 } | |
| 553 | |
| 554 return JVMTI_ERROR_NONE; | |
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555 } else { |
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556 return JVMTI_ERROR_WRONG_PHASE; |
| 0 | 557 } |
| 558 } /* end AddToSystemClassLoaderSearch */ | |
| 559 | |
| 560 // | |
| 561 // General functions | |
| 562 // | |
| 563 | |
| 564 // phase_ptr - pre-checked for NULL | |
| 565 jvmtiError | |
| 566 JvmtiEnv::GetPhase(jvmtiPhase* phase_ptr) { | |
| 567 *phase_ptr = get_phase(); | |
| 568 return JVMTI_ERROR_NONE; | |
| 569 } /* end GetPhase */ | |
| 570 | |
| 571 | |
| 572 jvmtiError | |
| 573 JvmtiEnv::DisposeEnvironment() { | |
| 574 dispose(); | |
| 575 return JVMTI_ERROR_NONE; | |
| 576 } /* end DisposeEnvironment */ | |
| 577 | |
| 578 | |
| 579 // data - NULL is a valid value, must be checked | |
| 580 jvmtiError | |
| 581 JvmtiEnv::SetEnvironmentLocalStorage(const void* data) { | |
| 582 set_env_local_storage(data); | |
| 583 return JVMTI_ERROR_NONE; | |
| 584 } /* end SetEnvironmentLocalStorage */ | |
| 585 | |
| 586 | |
| 587 // data_ptr - pre-checked for NULL | |
| 588 jvmtiError | |
| 589 JvmtiEnv::GetEnvironmentLocalStorage(void** data_ptr) { | |
| 590 *data_ptr = (void*)get_env_local_storage(); | |
| 591 return JVMTI_ERROR_NONE; | |
| 592 } /* end GetEnvironmentLocalStorage */ | |
| 593 | |
| 594 // version_ptr - pre-checked for NULL | |
| 595 jvmtiError | |
| 596 JvmtiEnv::GetVersionNumber(jint* version_ptr) { | |
| 597 *version_ptr = JVMTI_VERSION; | |
| 598 return JVMTI_ERROR_NONE; | |
| 599 } /* end GetVersionNumber */ | |
| 600 | |
| 601 | |
| 602 // name_ptr - pre-checked for NULL | |
| 603 jvmtiError | |
| 604 JvmtiEnv::GetErrorName(jvmtiError error, char** name_ptr) { | |
| 605 if (error < JVMTI_ERROR_NONE || error > JVMTI_ERROR_MAX) { | |
| 606 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
| 607 } | |
| 608 const char *name = JvmtiUtil::error_name(error); | |
| 609 if (name == NULL) { | |
| 610 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
| 611 } | |
| 612 size_t len = strlen(name) + 1; | |
| 613 jvmtiError err = allocate(len, (unsigned char**)name_ptr); | |
| 614 if (err == JVMTI_ERROR_NONE) { | |
| 615 memcpy(*name_ptr, name, len); | |
| 616 } | |
| 617 return err; | |
| 618 } /* end GetErrorName */ | |
| 619 | |
| 620 | |
| 621 jvmtiError | |
| 622 JvmtiEnv::SetVerboseFlag(jvmtiVerboseFlag flag, jboolean value) { | |
| 623 switch (flag) { | |
| 624 case JVMTI_VERBOSE_OTHER: | |
| 625 // ignore | |
| 626 break; | |
| 627 case JVMTI_VERBOSE_CLASS: | |
| 628 TraceClassLoading = value != 0; | |
| 629 TraceClassUnloading = value != 0; | |
| 630 break; | |
| 631 case JVMTI_VERBOSE_GC: | |
| 632 PrintGC = value != 0; | |
| 633 break; | |
| 634 case JVMTI_VERBOSE_JNI: | |
| 635 PrintJNIResolving = value != 0; | |
| 636 break; | |
| 637 default: | |
| 638 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
| 639 }; | |
| 640 return JVMTI_ERROR_NONE; | |
| 641 } /* end SetVerboseFlag */ | |
| 642 | |
| 643 | |
| 644 // format_ptr - pre-checked for NULL | |
| 645 jvmtiError | |
| 646 JvmtiEnv::GetJLocationFormat(jvmtiJlocationFormat* format_ptr) { | |
| 647 *format_ptr = JVMTI_JLOCATION_JVMBCI; | |
| 648 return JVMTI_ERROR_NONE; | |
| 649 } /* end GetJLocationFormat */ | |
| 650 | |
| 651 // | |
| 652 // Thread functions | |
| 653 // | |
| 654 | |
| 655 // Threads_lock NOT held | |
| 656 // thread - NOT pre-checked | |
| 657 // thread_state_ptr - pre-checked for NULL | |
| 658 jvmtiError | |
| 659 JvmtiEnv::GetThreadState(jthread thread, jint* thread_state_ptr) { | |
| 660 jint state; | |
| 661 oop thread_oop; | |
| 662 JavaThread* thr; | |
| 663 | |
| 664 if (thread == NULL) { | |
| 665 thread_oop = JavaThread::current()->threadObj(); | |
| 666 } else { | |
| 667 thread_oop = JNIHandles::resolve_external_guard(thread); | |
| 668 } | |
| 669 | |
| 1142 | 670 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) { |
| 0 | 671 return JVMTI_ERROR_INVALID_THREAD; |
| 672 } | |
| 673 | |
| 674 // get most state bits | |
| 675 state = (jint)java_lang_Thread::get_thread_status(thread_oop); | |
| 676 | |
| 677 // add more state bits | |
| 678 thr = java_lang_Thread::thread(thread_oop); | |
| 679 if (thr != NULL) { | |
| 680 JavaThreadState jts = thr->thread_state(); | |
| 681 | |
| 682 if (thr->is_being_ext_suspended()) { | |
| 683 state |= JVMTI_THREAD_STATE_SUSPENDED; | |
| 684 } | |
| 685 if (jts == _thread_in_native) { | |
| 686 state |= JVMTI_THREAD_STATE_IN_NATIVE; | |
| 687 } | |
| 688 OSThread* osThread = thr->osthread(); | |
| 689 if (osThread != NULL && osThread->interrupted()) { | |
| 690 state |= JVMTI_THREAD_STATE_INTERRUPTED; | |
| 691 } | |
| 692 } | |
| 693 | |
| 694 *thread_state_ptr = state; | |
| 695 return JVMTI_ERROR_NONE; | |
| 696 } /* end GetThreadState */ | |
| 697 | |
| 698 | |
| 699 // thread_ptr - pre-checked for NULL | |
| 700 jvmtiError | |
| 701 JvmtiEnv::GetCurrentThread(jthread* thread_ptr) { | |
| 702 JavaThread* current_thread = JavaThread::current(); | |
| 703 *thread_ptr = (jthread)JNIHandles::make_local(current_thread, current_thread->threadObj()); | |
| 704 return JVMTI_ERROR_NONE; | |
| 705 } /* end GetCurrentThread */ | |
| 706 | |
| 707 | |
| 708 // threads_count_ptr - pre-checked for NULL | |
| 709 // threads_ptr - pre-checked for NULL | |
| 710 jvmtiError | |
| 711 JvmtiEnv::GetAllThreads(jint* threads_count_ptr, jthread** threads_ptr) { | |
| 712 int nthreads = 0; | |
| 713 Handle *thread_objs = NULL; | |
| 714 ResourceMark rm; | |
| 715 HandleMark hm; | |
| 716 | |
| 717 // enumerate threads (including agent threads) | |
| 718 ThreadsListEnumerator tle(Thread::current(), true); | |
| 719 nthreads = tle.num_threads(); | |
| 720 *threads_count_ptr = nthreads; | |
| 721 | |
| 722 if (nthreads == 0) { | |
| 723 *threads_ptr = NULL; | |
| 724 return JVMTI_ERROR_NONE; | |
| 725 } | |
| 726 | |
| 727 thread_objs = NEW_RESOURCE_ARRAY(Handle, nthreads); | |
| 728 NULL_CHECK(thread_objs, JVMTI_ERROR_OUT_OF_MEMORY); | |
| 729 | |
| 730 for (int i=0; i < nthreads; i++) { | |
| 731 thread_objs[i] = Handle(tle.get_threadObj(i)); | |
| 732 } | |
| 733 | |
| 734 // have to make global handles outside of Threads_lock | |
| 735 jthread *jthreads = new_jthreadArray(nthreads, thread_objs); | |
| 736 NULL_CHECK(jthreads, JVMTI_ERROR_OUT_OF_MEMORY); | |
| 737 | |
| 738 *threads_ptr = jthreads; | |
| 739 return JVMTI_ERROR_NONE; | |
| 740 } /* end GetAllThreads */ | |
| 741 | |
| 742 | |
| 743 // Threads_lock NOT held, java_thread not protected by lock | |
| 744 // java_thread - pre-checked | |
| 745 jvmtiError | |
| 746 JvmtiEnv::SuspendThread(JavaThread* java_thread) { | |
| 747 // don't allow hidden thread suspend request. | |
| 748 if (java_thread->is_hidden_from_external_view()) { | |
| 749 return (JVMTI_ERROR_NONE); | |
| 750 } | |
| 751 | |
| 752 { | |
| 753 MutexLockerEx ml(java_thread->SR_lock(), Mutex::_no_safepoint_check_flag); | |
| 754 if (java_thread->is_external_suspend()) { | |
| 755 // don't allow nested external suspend requests. | |
| 756 return (JVMTI_ERROR_THREAD_SUSPENDED); | |
| 757 } | |
| 758 if (java_thread->is_exiting()) { // thread is in the process of exiting | |
| 759 return (JVMTI_ERROR_THREAD_NOT_ALIVE); | |
| 760 } | |
| 761 java_thread->set_external_suspend(); | |
| 762 } | |
| 763 | |
| 764 if (!JvmtiSuspendControl::suspend(java_thread)) { | |
| 765 // the thread was in the process of exiting | |
| 766 return (JVMTI_ERROR_THREAD_NOT_ALIVE); | |
| 767 } | |
| 768 return JVMTI_ERROR_NONE; | |
| 769 } /* end SuspendThread */ | |
| 770 | |
| 771 | |
| 772 // request_count - pre-checked to be greater than or equal to 0 | |
| 773 // request_list - pre-checked for NULL | |
| 774 // results - pre-checked for NULL | |
| 775 jvmtiError | |
| 776 JvmtiEnv::SuspendThreadList(jint request_count, const jthread* request_list, jvmtiError* results) { | |
| 777 int needSafepoint = 0; // > 0 if we need a safepoint | |
| 778 for (int i = 0; i < request_count; i++) { | |
| 779 JavaThread *java_thread = get_JavaThread(request_list[i]); | |
| 780 if (java_thread == NULL) { | |
| 781 results[i] = JVMTI_ERROR_INVALID_THREAD; | |
| 782 continue; | |
| 783 } | |
| 784 // the thread has not yet run or has exited (not on threads list) | |
| 785 if (java_thread->threadObj() == NULL) { | |
| 786 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
| 787 continue; | |
| 788 } | |
| 789 if (java_lang_Thread::thread(java_thread->threadObj()) == NULL) { | |
| 790 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
| 791 continue; | |
| 792 } | |
| 793 // don't allow hidden thread suspend request. | |
| 794 if (java_thread->is_hidden_from_external_view()) { | |
| 795 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend | |
| 796 continue; | |
| 797 } | |
| 798 | |
| 799 { | |
| 800 MutexLockerEx ml(java_thread->SR_lock(), Mutex::_no_safepoint_check_flag); | |
| 801 if (java_thread->is_external_suspend()) { | |
| 802 // don't allow nested external suspend requests. | |
| 803 results[i] = JVMTI_ERROR_THREAD_SUSPENDED; | |
| 804 continue; | |
| 805 } | |
| 806 if (java_thread->is_exiting()) { // thread is in the process of exiting | |
| 807 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
| 808 continue; | |
| 809 } | |
| 810 java_thread->set_external_suspend(); | |
| 811 } | |
| 812 if (java_thread->thread_state() == _thread_in_native) { | |
| 813 // We need to try and suspend native threads here. Threads in | |
| 814 // other states will self-suspend on their next transition. | |
| 815 if (!JvmtiSuspendControl::suspend(java_thread)) { | |
| 816 // The thread was in the process of exiting. Force another | |
| 817 // safepoint to make sure that this thread transitions. | |
| 818 needSafepoint++; | |
| 819 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
| 820 continue; | |
| 821 } | |
| 822 } else { | |
| 823 needSafepoint++; | |
| 824 } | |
| 825 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend | |
| 826 } | |
| 827 if (needSafepoint > 0) { | |
| 828 VM_ForceSafepoint vfs; | |
| 829 VMThread::execute(&vfs); | |
| 830 } | |
| 831 // per-thread suspend results returned via results parameter | |
| 832 return JVMTI_ERROR_NONE; | |
| 833 } /* end SuspendThreadList */ | |
| 834 | |
| 835 | |
| 836 // Threads_lock NOT held, java_thread not protected by lock | |
| 837 // java_thread - pre-checked | |
| 838 jvmtiError | |
| 839 JvmtiEnv::ResumeThread(JavaThread* java_thread) { | |
| 840 // don't allow hidden thread resume request. | |
| 841 if (java_thread->is_hidden_from_external_view()) { | |
| 842 return JVMTI_ERROR_NONE; | |
| 843 } | |
| 844 | |
| 845 if (!java_thread->is_being_ext_suspended()) { | |
| 846 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
| 847 } | |
| 848 | |
| 849 if (!JvmtiSuspendControl::resume(java_thread)) { | |
| 850 return JVMTI_ERROR_INTERNAL; | |
| 851 } | |
| 852 return JVMTI_ERROR_NONE; | |
| 853 } /* end ResumeThread */ | |
| 854 | |
| 855 | |
| 856 // request_count - pre-checked to be greater than or equal to 0 | |
| 857 // request_list - pre-checked for NULL | |
| 858 // results - pre-checked for NULL | |
| 859 jvmtiError | |
| 860 JvmtiEnv::ResumeThreadList(jint request_count, const jthread* request_list, jvmtiError* results) { | |
| 861 for (int i = 0; i < request_count; i++) { | |
| 862 JavaThread *java_thread = get_JavaThread(request_list[i]); | |
| 863 if (java_thread == NULL) { | |
| 864 results[i] = JVMTI_ERROR_INVALID_THREAD; | |
| 865 continue; | |
| 866 } | |
| 867 // don't allow hidden thread resume request. | |
| 868 if (java_thread->is_hidden_from_external_view()) { | |
| 869 results[i] = JVMTI_ERROR_NONE; // indicate successful resume | |
| 870 continue; | |
| 871 } | |
| 872 if (!java_thread->is_being_ext_suspended()) { | |
| 873 results[i] = JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
| 874 continue; | |
| 875 } | |
| 876 | |
| 877 if (!JvmtiSuspendControl::resume(java_thread)) { | |
| 878 results[i] = JVMTI_ERROR_INTERNAL; | |
| 879 continue; | |
| 880 } | |
| 881 | |
| 882 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend | |
| 883 } | |
| 884 // per-thread resume results returned via results parameter | |
| 885 return JVMTI_ERROR_NONE; | |
| 886 } /* end ResumeThreadList */ | |
| 887 | |
| 888 | |
| 889 // Threads_lock NOT held, java_thread not protected by lock | |
| 890 // java_thread - pre-checked | |
| 891 jvmtiError | |
| 892 JvmtiEnv::StopThread(JavaThread* java_thread, jobject exception) { | |
| 893 oop e = JNIHandles::resolve_external_guard(exception); | |
| 894 NULL_CHECK(e, JVMTI_ERROR_NULL_POINTER); | |
| 895 | |
| 896 JavaThread::send_async_exception(java_thread->threadObj(), e); | |
| 897 | |
| 898 return JVMTI_ERROR_NONE; | |
| 899 | |
| 900 } /* end StopThread */ | |
| 901 | |
| 902 | |
| 903 // Threads_lock NOT held | |
| 904 // thread - NOT pre-checked | |
| 905 jvmtiError | |
| 906 JvmtiEnv::InterruptThread(jthread thread) { | |
| 907 oop thread_oop = JNIHandles::resolve_external_guard(thread); | |
| 1142 | 908 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) |
| 0 | 909 return JVMTI_ERROR_INVALID_THREAD; |
| 910 | |
| 911 JavaThread* current_thread = JavaThread::current(); | |
| 912 | |
| 913 // Todo: this is a duplicate of JVM_Interrupt; share code in future | |
| 914 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 915 MutexLockerEx ml(current_thread->threadObj() == thread_oop ? NULL : Threads_lock); | |
| 916 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 917 // acquire of the lock | |
| 918 | |
| 919 JavaThread* java_thread = java_lang_Thread::thread(JNIHandles::resolve_external_guard(thread)); | |
| 920 NULL_CHECK(java_thread, JVMTI_ERROR_THREAD_NOT_ALIVE); | |
| 921 | |
| 922 Thread::interrupt(java_thread); | |
| 923 | |
| 924 return JVMTI_ERROR_NONE; | |
| 925 } /* end InterruptThread */ | |
| 926 | |
| 927 | |
| 928 // Threads_lock NOT held | |
| 929 // thread - NOT pre-checked | |
| 930 // info_ptr - pre-checked for NULL | |
| 931 jvmtiError | |
| 932 JvmtiEnv::GetThreadInfo(jthread thread, jvmtiThreadInfo* info_ptr) { | |
| 933 ResourceMark rm; | |
| 934 HandleMark hm; | |
| 935 | |
| 936 JavaThread* current_thread = JavaThread::current(); | |
| 937 | |
| 938 // if thread is NULL the current thread is used | |
| 939 oop thread_oop; | |
| 940 if (thread == NULL) { | |
| 941 thread_oop = current_thread->threadObj(); | |
| 942 } else { | |
| 943 thread_oop = JNIHandles::resolve_external_guard(thread); | |
| 944 } | |
| 1142 | 945 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) |
| 0 | 946 return JVMTI_ERROR_INVALID_THREAD; |
| 947 | |
| 948 Handle thread_obj(current_thread, thread_oop); | |
| 949 typeArrayHandle name; | |
| 950 ThreadPriority priority; | |
| 951 Handle thread_group; | |
| 952 Handle context_class_loader; | |
| 953 bool is_daemon; | |
| 954 | |
| 955 { MutexLocker mu(Threads_lock); | |
| 956 | |
| 957 name = typeArrayHandle(current_thread, java_lang_Thread::name(thread_obj())); | |
| 958 priority = java_lang_Thread::priority(thread_obj()); | |
| 959 thread_group = Handle(current_thread, java_lang_Thread::threadGroup(thread_obj())); | |
| 960 is_daemon = java_lang_Thread::is_daemon(thread_obj()); | |
| 961 | |
| 962 oop loader = java_lang_Thread::context_class_loader(thread_obj()); | |
| 963 context_class_loader = Handle(current_thread, loader); | |
| 964 } | |
| 965 { const char *n; | |
| 966 | |
| 967 if (name() != NULL) { | |
| 968 n = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length()); | |
| 969 } else { | |
| 970 n = UNICODE::as_utf8(NULL, 0); | |
| 971 } | |
| 972 | |
| 973 info_ptr->name = (char *) jvmtiMalloc(strlen(n)+1); | |
| 974 if (info_ptr->name == NULL) | |
| 975 return JVMTI_ERROR_OUT_OF_MEMORY; | |
| 976 | |
| 977 strcpy(info_ptr->name, n); | |
| 978 } | |
| 979 info_ptr->is_daemon = is_daemon; | |
| 980 info_ptr->priority = priority; | |
| 981 | |
| 982 info_ptr->context_class_loader = (context_class_loader.is_null()) ? NULL : | |
| 983 jni_reference(context_class_loader); | |
| 984 info_ptr->thread_group = jni_reference(thread_group); | |
| 985 | |
| 986 return JVMTI_ERROR_NONE; | |
| 987 } /* end GetThreadInfo */ | |
| 988 | |
| 989 | |
| 990 // Threads_lock NOT held, java_thread not protected by lock | |
| 991 // java_thread - pre-checked | |
| 992 // owned_monitor_count_ptr - pre-checked for NULL | |
| 993 // owned_monitors_ptr - pre-checked for NULL | |
| 994 jvmtiError | |
| 995 JvmtiEnv::GetOwnedMonitorInfo(JavaThread* java_thread, jint* owned_monitor_count_ptr, jobject** owned_monitors_ptr) { | |
| 996 jvmtiError err = JVMTI_ERROR_NONE; | |
| 997 JavaThread* calling_thread = JavaThread::current(); | |
| 998 | |
| 999 // growable array of jvmti monitors info on the C-heap | |
| 1000 GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list = | |
| 6197 | 1001 new (ResourceObj::C_HEAP, mtInternal) GrowableArray<jvmtiMonitorStackDepthInfo*>(1, true); |
| 0 | 1002 |
| 1003 uint32_t debug_bits = 0; | |
| 1004 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
| 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 |
| 1048 uint32_t debug_bits = 0; | |
| 1049 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
| 1050 err = get_owned_monitors(calling_thread, java_thread, owned_monitors_list); | |
| 1051 } else { | |
| 1052 // JVMTI get owned monitors info at safepoint. Do not require target thread to | |
| 1053 // be suspended. | |
| 1054 VM_GetOwnedMonitorInfo op(this, calling_thread, java_thread, owned_monitors_list); | |
| 1055 VMThread::execute(&op); | |
| 1056 err = op.result(); | |
| 1057 } | |
| 1058 | |
| 1059 jint owned_monitor_count = owned_monitors_list->length(); | |
| 1060 if (err == JVMTI_ERROR_NONE) { | |
| 1061 if ((err = allocate(owned_monitor_count * sizeof(jvmtiMonitorStackDepthInfo), | |
| 1062 (unsigned char**)monitor_info_ptr)) == JVMTI_ERROR_NONE) { | |
| 1063 // copy to output array. | |
| 1064 for (int i = 0; i < owned_monitor_count; i++) { | |
| 1065 (*monitor_info_ptr)[i].monitor = | |
| 1066 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->monitor; | |
| 1067 (*monitor_info_ptr)[i].stack_depth = | |
| 1068 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->stack_depth; | |
| 1069 } | |
| 1070 } | |
| 1071 *monitor_info_count_ptr = owned_monitor_count; | |
| 1072 } | |
| 1073 | |
| 1074 // clean up. | |
| 1075 for (int i = 0; i < owned_monitor_count; i++) { | |
| 1076 deallocate((unsigned char*)owned_monitors_list->at(i)); | |
| 1077 } | |
| 1078 delete owned_monitors_list; | |
| 1079 | |
| 1080 return err; | |
| 1081 } /* end GetOwnedMonitorStackDepthInfo */ | |
| 1082 | |
| 1083 | |
| 1084 // Threads_lock NOT held, java_thread not protected by lock | |
| 1085 // java_thread - pre-checked | |
| 1086 // monitor_ptr - pre-checked for NULL | |
| 1087 jvmtiError | |
| 1088 JvmtiEnv::GetCurrentContendedMonitor(JavaThread* java_thread, jobject* monitor_ptr) { | |
| 1089 jvmtiError err = JVMTI_ERROR_NONE; | |
| 1090 uint32_t debug_bits = 0; | |
| 1091 JavaThread* calling_thread = JavaThread::current(); | |
| 1092 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
| 1093 err = get_current_contended_monitor(calling_thread, java_thread, monitor_ptr); | |
| 1094 } else { | |
| 1095 // get contended monitor information at safepoint. | |
| 1096 VM_GetCurrentContendedMonitor op(this, calling_thread, java_thread, monitor_ptr); | |
| 1097 VMThread::execute(&op); | |
| 1098 err = op.result(); | |
| 1099 } | |
| 1100 return err; | |
| 1101 } /* end GetCurrentContendedMonitor */ | |
| 1102 | |
| 1103 | |
| 1104 // Threads_lock NOT held | |
| 1105 // thread - NOT pre-checked | |
| 1106 // proc - pre-checked for NULL | |
| 1107 // arg - NULL is a valid value, must be checked | |
| 1108 jvmtiError | |
| 1109 JvmtiEnv::RunAgentThread(jthread thread, jvmtiStartFunction proc, const void* arg, jint priority) { | |
| 1110 oop thread_oop = JNIHandles::resolve_external_guard(thread); | |
| 1142 | 1111 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) { |
| 0 | 1112 return JVMTI_ERROR_INVALID_THREAD; |
| 1113 } | |
| 1114 if (priority < JVMTI_THREAD_MIN_PRIORITY || priority > JVMTI_THREAD_MAX_PRIORITY) { | |
| 1115 return JVMTI_ERROR_INVALID_PRIORITY; | |
| 1116 } | |
| 1117 | |
| 1118 //Thread-self | |
| 1119 JavaThread* current_thread = JavaThread::current(); | |
| 1120 | |
| 1121 Handle thread_hndl(current_thread, thread_oop); | |
| 1122 { | |
| 1123 MutexLocker mu(Threads_lock); // grab Threads_lock | |
| 1124 | |
| 1125 JvmtiAgentThread *new_thread = new JvmtiAgentThread(this, proc, arg); | |
| 1126 | |
| 1127 // At this point it may be possible that no osthread was created for the | |
| 1128 // JavaThread due to lack of memory. | |
| 1129 if (new_thread == NULL || new_thread->osthread() == NULL) { | |
| 1130 if (new_thread) delete new_thread; | |
| 1131 return JVMTI_ERROR_OUT_OF_MEMORY; | |
| 1132 } | |
| 1133 | |
| 1134 java_lang_Thread::set_thread(thread_hndl(), new_thread); | |
| 1135 java_lang_Thread::set_priority(thread_hndl(), (ThreadPriority)priority); | |
| 1136 java_lang_Thread::set_daemon(thread_hndl()); | |
| 1137 | |
| 1138 new_thread->set_threadObj(thread_hndl()); | |
| 1139 Threads::add(new_thread); | |
| 1140 Thread::start(new_thread); | |
| 1141 } // unlock Threads_lock | |
| 1142 | |
| 1143 return JVMTI_ERROR_NONE; | |
| 1144 } /* end RunAgentThread */ | |
| 1145 | |
| 1146 // | |
| 1147 // Thread Group functions | |
| 1148 // | |
| 1149 | |
| 1150 // group_count_ptr - pre-checked for NULL | |
| 1151 // groups_ptr - pre-checked for NULL | |
| 1152 jvmtiError | |
| 1153 JvmtiEnv::GetTopThreadGroups(jint* group_count_ptr, jthreadGroup** groups_ptr) { | |
| 1154 JavaThread* current_thread = JavaThread::current(); | |
| 1155 | |
| 1156 // Only one top level thread group now. | |
| 1157 *group_count_ptr = 1; | |
| 1158 | |
| 1159 // Allocate memory to store global-refs to the thread groups. | |
| 1160 // Assume this area is freed by caller. | |
| 1161 *groups_ptr = (jthreadGroup *) jvmtiMalloc((sizeof(jthreadGroup)) * (*group_count_ptr)); | |
| 1162 | |
| 1163 NULL_CHECK(*groups_ptr, JVMTI_ERROR_OUT_OF_MEMORY); | |
| 1164 | |
| 1165 // Convert oop to Handle, then convert Handle to global-ref. | |
| 1166 { | |
| 1167 HandleMark hm(current_thread); | |
| 1168 Handle system_thread_group(current_thread, Universe::system_thread_group()); | |
| 1169 *groups_ptr[0] = jni_reference(system_thread_group); | |
| 1170 } | |
| 1171 | |
| 1172 return JVMTI_ERROR_NONE; | |
| 1173 } /* end GetTopThreadGroups */ | |
| 1174 | |
| 1175 | |
| 1176 // info_ptr - pre-checked for NULL | |
| 1177 jvmtiError | |
| 1178 JvmtiEnv::GetThreadGroupInfo(jthreadGroup group, jvmtiThreadGroupInfo* info_ptr) { | |
| 1179 ResourceMark rm; | |
| 1180 HandleMark hm; | |
| 1181 | |
| 1182 JavaThread* current_thread = JavaThread::current(); | |
| 1183 | |
| 1184 Handle group_obj (current_thread, JNIHandles::resolve_external_guard(group)); | |
| 1185 NULL_CHECK(group_obj(), JVMTI_ERROR_INVALID_THREAD_GROUP); | |
| 1186 | |
| 1187 typeArrayHandle name; | |
| 1188 Handle parent_group; | |
| 1189 bool is_daemon; | |
| 1190 ThreadPriority max_priority; | |
| 1191 | |
| 1192 { MutexLocker mu(Threads_lock); | |
| 1193 | |
| 1194 name = typeArrayHandle(current_thread, | |
| 1195 java_lang_ThreadGroup::name(group_obj())); | |
| 1196 parent_group = Handle(current_thread, java_lang_ThreadGroup::parent(group_obj())); | |
| 1197 is_daemon = java_lang_ThreadGroup::is_daemon(group_obj()); | |
| 1198 max_priority = java_lang_ThreadGroup::maxPriority(group_obj()); | |
| 1199 } | |
| 1200 | |
| 1201 info_ptr->is_daemon = is_daemon; | |
| 1202 info_ptr->max_priority = max_priority; | |
| 1203 info_ptr->parent = jni_reference(parent_group); | |
| 1204 | |
| 1205 if (name() != NULL) { | |
| 1206 const char* n = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length()); | |
| 1207 info_ptr->name = (char *)jvmtiMalloc(strlen(n)+1); | |
| 1208 NULL_CHECK(info_ptr->name, JVMTI_ERROR_OUT_OF_MEMORY); | |
| 1209 strcpy(info_ptr->name, n); | |
| 1210 } else { | |
| 1211 info_ptr->name = NULL; | |
| 1212 } | |
| 1213 | |
| 1214 return JVMTI_ERROR_NONE; | |
| 1215 } /* end GetThreadGroupInfo */ | |
| 1216 | |
| 1217 | |
| 1218 // thread_count_ptr - pre-checked for NULL | |
| 1219 // threads_ptr - pre-checked for NULL | |
| 1220 // group_count_ptr - pre-checked for NULL | |
| 1221 // groups_ptr - pre-checked for NULL | |
| 1222 jvmtiError | |
| 1223 JvmtiEnv::GetThreadGroupChildren(jthreadGroup group, jint* thread_count_ptr, jthread** threads_ptr, jint* group_count_ptr, jthreadGroup** groups_ptr) { | |
| 1224 JavaThread* current_thread = JavaThread::current(); | |
| 1225 oop group_obj = (oop) JNIHandles::resolve_external_guard(group); | |
| 1226 NULL_CHECK(group_obj, JVMTI_ERROR_INVALID_THREAD_GROUP); | |
| 1227 | |
| 1228 Handle *thread_objs = NULL; | |
| 1229 Handle *group_objs = NULL; | |
| 1230 int nthreads = 0; | |
| 1231 int ngroups = 0; | |
| 1232 int hidden_threads = 0; | |
| 1233 | |
| 1234 ResourceMark rm; | |
| 1235 HandleMark hm; | |
| 1236 | |
| 1237 Handle group_hdl(current_thread, group_obj); | |
| 1238 | |
| 1239 { MutexLocker mu(Threads_lock); | |
| 1240 | |
| 1241 nthreads = java_lang_ThreadGroup::nthreads(group_hdl()); | |
| 1242 ngroups = java_lang_ThreadGroup::ngroups(group_hdl()); | |
| 1243 | |
| 1244 if (nthreads > 0) { | |
| 1245 objArrayOop threads = java_lang_ThreadGroup::threads(group_hdl()); | |
| 1246 assert(nthreads <= threads->length(), "too many threads"); | |
| 1247 thread_objs = NEW_RESOURCE_ARRAY(Handle,nthreads); | |
| 1248 for (int i=0, j=0; i<nthreads; i++) { | |
| 1249 oop thread_obj = threads->obj_at(i); | |
| 1250 assert(thread_obj != NULL, "thread_obj is NULL"); | |
| 1251 JavaThread *javathread = java_lang_Thread::thread(thread_obj); | |
| 1252 // Filter out hidden java threads. | |
| 1253 if (javathread != NULL && javathread->is_hidden_from_external_view()) { | |
| 1254 hidden_threads++; | |
| 1255 continue; | |
| 1256 } | |
| 1257 thread_objs[j++] = Handle(current_thread, thread_obj); | |
| 1258 } | |
| 1259 nthreads -= hidden_threads; | |
| 1260 } | |
| 1261 if (ngroups > 0) { | |
| 1262 objArrayOop groups = java_lang_ThreadGroup::groups(group_hdl()); | |
| 1263 assert(ngroups <= groups->length(), "too many threads"); | |
| 1264 group_objs = NEW_RESOURCE_ARRAY(Handle,ngroups); | |
| 1265 for (int i=0; i<ngroups; i++) { | |
| 1266 oop group_obj = groups->obj_at(i); | |
| 1267 assert(group_obj != NULL, "group_obj != NULL"); | |
| 1268 group_objs[i] = Handle(current_thread, group_obj); | |
| 1269 } | |
| 1270 } | |
| 1271 } | |
| 1272 | |
| 1273 // have to make global handles outside of Threads_lock | |
| 1274 *group_count_ptr = ngroups; | |
| 1275 *thread_count_ptr = nthreads; | |
| 1276 *threads_ptr = new_jthreadArray(nthreads, thread_objs); | |
| 1277 *groups_ptr = new_jthreadGroupArray(ngroups, group_objs); | |
| 1278 if ((nthreads > 0) && (*threads_ptr == NULL)) { | |
| 1279 return JVMTI_ERROR_OUT_OF_MEMORY; | |
| 1280 } | |
| 1281 if ((ngroups > 0) && (*groups_ptr == NULL)) { | |
| 1282 return JVMTI_ERROR_OUT_OF_MEMORY; | |
| 1283 } | |
| 1284 | |
| 1285 return JVMTI_ERROR_NONE; | |
| 1286 } /* end GetThreadGroupChildren */ | |
| 1287 | |
| 1288 | |
| 1289 // | |
| 1290 // Stack Frame functions | |
| 1291 // | |
| 1292 | |
| 1293 // Threads_lock NOT held, java_thread not protected by lock | |
| 1294 // java_thread - pre-checked | |
| 1295 // max_frame_count - pre-checked to be greater than or equal to 0 | |
| 1296 // frame_buffer - pre-checked for NULL | |
| 1297 // count_ptr - pre-checked for NULL | |
| 1298 jvmtiError | |
| 1299 JvmtiEnv::GetStackTrace(JavaThread* java_thread, jint start_depth, jint max_frame_count, jvmtiFrameInfo* frame_buffer, jint* count_ptr) { | |
| 1300 jvmtiError err = JVMTI_ERROR_NONE; | |
| 1301 uint32_t debug_bits = 0; | |
| 1302 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
| 1303 err = get_stack_trace(java_thread, start_depth, max_frame_count, frame_buffer, count_ptr); | |
| 1304 } else { | |
| 1305 // JVMTI get stack trace at safepoint. Do not require target thread to | |
| 1306 // be suspended. | |
| 1307 VM_GetStackTrace op(this, java_thread, start_depth, max_frame_count, frame_buffer, count_ptr); | |
| 1308 VMThread::execute(&op); | |
| 1309 err = op.result(); | |
| 1310 } | |
| 1311 | |
| 1312 return err; | |
| 1313 } /* end GetStackTrace */ | |
| 1314 | |
| 1315 | |
| 1316 // max_frame_count - pre-checked to be greater than or equal to 0 | |
| 1317 // stack_info_ptr - pre-checked for NULL | |
| 1318 // thread_count_ptr - pre-checked for NULL | |
| 1319 jvmtiError | |
| 1320 JvmtiEnv::GetAllStackTraces(jint max_frame_count, jvmtiStackInfo** stack_info_ptr, jint* thread_count_ptr) { | |
| 1321 jvmtiError err = JVMTI_ERROR_NONE; | |
| 1322 JavaThread* calling_thread = JavaThread::current(); | |
| 1323 | |
| 1324 // JVMTI get stack traces at safepoint. | |
| 1325 VM_GetAllStackTraces op(this, calling_thread, max_frame_count); | |
| 1326 VMThread::execute(&op); | |
| 1327 *thread_count_ptr = op.final_thread_count(); | |
| 1328 *stack_info_ptr = op.stack_info(); | |
| 1329 err = op.result(); | |
| 1330 return err; | |
| 1331 } /* end GetAllStackTraces */ | |
| 1332 | |
| 1333 | |
| 1334 // thread_count - pre-checked to be greater than or equal to 0 | |
| 1335 // thread_list - pre-checked for NULL | |
| 1336 // max_frame_count - pre-checked to be greater than or equal to 0 | |
| 1337 // stack_info_ptr - pre-checked for NULL | |
| 1338 jvmtiError | |
| 1339 JvmtiEnv::GetThreadListStackTraces(jint thread_count, const jthread* thread_list, jint max_frame_count, jvmtiStackInfo** stack_info_ptr) { | |
| 1340 jvmtiError err = JVMTI_ERROR_NONE; | |
| 1341 // JVMTI get stack traces at safepoint. | |
| 1342 VM_GetThreadListStackTraces op(this, thread_count, thread_list, max_frame_count); | |
| 1343 VMThread::execute(&op); | |
| 1344 err = op.result(); | |
| 1345 if (err == JVMTI_ERROR_NONE) { | |
| 1346 *stack_info_ptr = op.stack_info(); | |
| 1347 } | |
| 1348 return err; | |
| 1349 } /* end GetThreadListStackTraces */ | |
| 1350 | |
| 1351 | |
| 1352 // Threads_lock NOT held, java_thread not protected by lock | |
| 1353 // java_thread - pre-checked | |
| 1354 // count_ptr - pre-checked for NULL | |
| 1355 jvmtiError | |
| 1356 JvmtiEnv::GetFrameCount(JavaThread* java_thread, jint* count_ptr) { | |
| 1357 jvmtiError err = JVMTI_ERROR_NONE; | |
| 1358 | |
| 1359 // retrieve or create JvmtiThreadState. | |
| 1360 JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread); | |
|
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1361 if (state == NULL) { |
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1362 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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1363 } |
| 0 | 1364 uint32_t debug_bits = 0; |
| 1365 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
| 1366 err = get_frame_count(state, count_ptr); | |
| 1367 } else { | |
| 1368 // get java stack frame count at safepoint. | |
| 1369 VM_GetFrameCount op(this, state, count_ptr); | |
| 1370 VMThread::execute(&op); | |
| 1371 err = op.result(); | |
| 1372 } | |
| 1373 return err; | |
| 1374 } /* end GetFrameCount */ | |
| 1375 | |
| 1376 | |
| 1377 // Threads_lock NOT held, java_thread not protected by lock | |
| 1378 // java_thread - pre-checked | |
| 1379 jvmtiError | |
| 1380 JvmtiEnv::PopFrame(JavaThread* java_thread) { | |
| 1381 JavaThread* current_thread = JavaThread::current(); | |
| 1382 HandleMark hm(current_thread); | |
| 1383 uint32_t debug_bits = 0; | |
| 1384 | |
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1385 // retrieve or create the state |
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1386 JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread); |
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1387 if (state == NULL) { |
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1388 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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1389 } |
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1390 |
| 0 | 1391 // Check if java_thread is fully suspended |
| 1392 if (!is_thread_fully_suspended(java_thread, true /* wait for suspend completion */, &debug_bits)) { | |
| 1393 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
| 1394 } | |
| 1395 // Check to see if a PopFrame was already in progress | |
| 1396 if (java_thread->popframe_condition() != JavaThread::popframe_inactive) { | |
| 1397 // Probably possible for JVMTI clients to trigger this, but the | |
| 1398 // JPDA backend shouldn't allow this to happen | |
| 1399 return JVMTI_ERROR_INTERNAL; | |
| 1400 } | |
| 1401 | |
| 1402 { | |
| 1403 // Was workaround bug | |
| 1404 // 4812902: popFrame hangs if the method is waiting at a synchronize | |
| 1405 // Catch this condition and return an error to avoid hanging. | |
| 1406 // Now JVMTI spec allows an implementation to bail out with an opaque frame error. | |
| 1407 OSThread* osThread = java_thread->osthread(); | |
| 1408 if (osThread->get_state() == MONITOR_WAIT) { | |
| 1409 return JVMTI_ERROR_OPAQUE_FRAME; | |
| 1410 } | |
| 1411 } | |
| 1412 | |
| 1413 { | |
| 1414 ResourceMark rm(current_thread); | |
| 1415 // Check if there are more than one Java frame in this thread, that the top two frames | |
| 1416 // are Java (not native) frames, and that there is no intervening VM frame | |
| 1417 int frame_count = 0; | |
| 1418 bool is_interpreted[2]; | |
| 1419 intptr_t *frame_sp[2]; | |
| 1420 // The 2-nd arg of constructor is needed to stop iterating at java entry frame. | |
| 1421 for (vframeStream vfs(java_thread, true); !vfs.at_end(); vfs.next()) { | |
| 1422 methodHandle mh(current_thread, vfs.method()); | |
| 1423 if (mh->is_native()) return(JVMTI_ERROR_OPAQUE_FRAME); | |
| 1424 is_interpreted[frame_count] = vfs.is_interpreted_frame(); | |
| 1425 frame_sp[frame_count] = vfs.frame_id(); | |
| 1426 if (++frame_count > 1) break; | |
| 1427 } | |
| 1428 if (frame_count < 2) { | |
| 1429 // We haven't found two adjacent non-native Java frames on the top. | |
| 1430 // There can be two situations here: | |
| 1431 // 1. There are no more java frames | |
| 1432 // 2. Two top java frames are separated by non-java native frames | |
| 1433 if(vframeFor(java_thread, 1) == NULL) { | |
| 1434 return JVMTI_ERROR_NO_MORE_FRAMES; | |
| 1435 } else { | |
| 1436 // Intervening non-java native or VM frames separate java frames. | |
| 1437 // Current implementation does not support this. See bug #5031735. | |
| 1438 // In theory it is possible to pop frames in such cases. | |
| 1439 return JVMTI_ERROR_OPAQUE_FRAME; | |
| 1440 } | |
| 1441 } | |
| 1442 | |
| 1443 // If any of the top 2 frames is a compiled one, need to deoptimize it | |
| 1444 for (int i = 0; i < 2; i++) { | |
| 1445 if (!is_interpreted[i]) { | |
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1446 Deoptimization::deoptimize_frame(java_thread, frame_sp[i], Deoptimization::Reason_constraint); |
| 0 | 1447 } |
| 1448 } | |
| 1449 | |
| 1450 // Update the thread state to reflect that the top frame is popped | |
| 1451 // so that cur_stack_depth is maintained properly and all frameIDs | |
| 1452 // are invalidated. | |
| 1453 // The current frame will be popped later when the suspended thread | |
| 1454 // is resumed and right before returning from VM to Java. | |
| 1455 // (see call_VM_base() in assembler_<cpu>.cpp). | |
| 1456 | |
| 1457 // It's fine to update the thread state here because no JVMTI events | |
| 1458 // shall be posted for this PopFrame. | |
| 1459 | |
| 1460 state->update_for_pop_top_frame(); | |
| 1461 java_thread->set_popframe_condition(JavaThread::popframe_pending_bit); | |
| 1462 // Set pending step flag for this popframe and it is cleared when next | |
| 1463 // step event is posted. | |
| 1464 state->set_pending_step_for_popframe(); | |
| 1465 } | |
| 1466 | |
| 1467 return JVMTI_ERROR_NONE; | |
| 1468 } /* end PopFrame */ | |
| 1469 | |
| 1470 | |
| 1471 // Threads_lock NOT held, java_thread not protected by lock | |
| 1472 // java_thread - pre-checked | |
| 1473 // java_thread - unchecked | |
| 1474 // depth - pre-checked as non-negative | |
| 1475 // method_ptr - pre-checked for NULL | |
| 1476 // location_ptr - pre-checked for NULL | |
| 1477 jvmtiError | |
| 1478 JvmtiEnv::GetFrameLocation(JavaThread* java_thread, jint depth, jmethodID* method_ptr, jlocation* location_ptr) { | |
| 1479 jvmtiError err = JVMTI_ERROR_NONE; | |
| 1480 uint32_t debug_bits = 0; | |
| 1481 | |
| 1482 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
| 1483 err = get_frame_location(java_thread, depth, method_ptr, location_ptr); | |
| 1484 } else { | |
| 1485 // JVMTI get java stack frame location at safepoint. | |
| 1486 VM_GetFrameLocation op(this, java_thread, depth, method_ptr, location_ptr); | |
| 1487 VMThread::execute(&op); | |
| 1488 err = op.result(); | |
| 1489 } | |
| 1490 return err; | |
| 1491 } /* end GetFrameLocation */ | |
| 1492 | |
| 1493 | |
| 1494 // Threads_lock NOT held, java_thread not protected by lock | |
| 1495 // java_thread - pre-checked | |
| 1496 // java_thread - unchecked | |
| 1497 // depth - pre-checked as non-negative | |
| 1498 jvmtiError | |
| 1499 JvmtiEnv::NotifyFramePop(JavaThread* java_thread, jint depth) { | |
| 1500 ResourceMark rm; | |
| 1501 uint32_t debug_bits = 0; | |
| 1502 | |
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1503 JvmtiThreadState *state = JvmtiThreadState::state_for(java_thread); |
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1504 if (state == NULL) { |
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1505 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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1506 } |
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1507 |
| 0 | 1508 if (!JvmtiEnv::is_thread_fully_suspended(java_thread, true, &debug_bits)) { |
| 1509 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
| 1510 } | |
| 1511 | |
| 1512 if (TraceJVMTICalls) { | |
| 1513 JvmtiSuspendControl::print(); | |
| 1514 } | |
| 1515 | |
| 1516 vframe *vf = vframeFor(java_thread, depth); | |
| 1517 if (vf == NULL) { | |
| 1518 return JVMTI_ERROR_NO_MORE_FRAMES; | |
| 1519 } | |
| 1520 | |
| 1521 if (!vf->is_java_frame() || ((javaVFrame*) vf)->method()->is_native()) { | |
| 1522 return JVMTI_ERROR_OPAQUE_FRAME; | |
| 1523 } | |
| 1524 | |
| 1525 assert(vf->frame_pointer() != NULL, "frame pointer mustn't be NULL"); | |
| 1526 | |
| 1527 int frame_number = state->count_frames() - depth; | |
| 1528 state->env_thread_state(this)->set_frame_pop(frame_number); | |
| 1529 | |
| 1530 return JVMTI_ERROR_NONE; | |
| 1531 } /* end NotifyFramePop */ | |
| 1532 | |
| 1533 | |
| 1534 // | |
| 1535 // Force Early Return functions | |
| 1536 // | |
| 1537 | |
| 1538 // Threads_lock NOT held, java_thread not protected by lock | |
| 1539 // java_thread - pre-checked | |
| 1540 jvmtiError | |
| 1541 JvmtiEnv::ForceEarlyReturnObject(JavaThread* java_thread, jobject value) { | |
| 1542 jvalue val; | |
| 1543 val.l = value; | |
| 1544 return force_early_return(java_thread, val, atos); | |
| 1545 } /* end ForceEarlyReturnObject */ | |
| 1546 | |
| 1547 | |
| 1548 // Threads_lock NOT held, java_thread not protected by lock | |
| 1549 // java_thread - pre-checked | |
| 1550 jvmtiError | |
| 1551 JvmtiEnv::ForceEarlyReturnInt(JavaThread* java_thread, jint value) { | |
| 1552 jvalue val; | |
| 1553 val.i = value; | |
| 1554 return force_early_return(java_thread, val, itos); | |
| 1555 } /* end ForceEarlyReturnInt */ | |
| 1556 | |
| 1557 | |
| 1558 // Threads_lock NOT held, java_thread not protected by lock | |
| 1559 // java_thread - pre-checked | |
| 1560 jvmtiError | |
| 1561 JvmtiEnv::ForceEarlyReturnLong(JavaThread* java_thread, jlong value) { | |
| 1562 jvalue val; | |
| 1563 val.j = value; | |
| 1564 return force_early_return(java_thread, val, ltos); | |
| 1565 } /* end ForceEarlyReturnLong */ | |
| 1566 | |
| 1567 | |
| 1568 // Threads_lock NOT held, java_thread not protected by lock | |
| 1569 // java_thread - pre-checked | |
| 1570 jvmtiError | |
| 1571 JvmtiEnv::ForceEarlyReturnFloat(JavaThread* java_thread, jfloat value) { | |
| 1572 jvalue val; | |
| 1573 val.f = value; | |
| 1574 return force_early_return(java_thread, val, ftos); | |
| 1575 } /* end ForceEarlyReturnFloat */ | |
| 1576 | |
| 1577 | |
| 1578 // Threads_lock NOT held, java_thread not protected by lock | |
| 1579 // java_thread - pre-checked | |
| 1580 jvmtiError | |
| 1581 JvmtiEnv::ForceEarlyReturnDouble(JavaThread* java_thread, jdouble value) { | |
| 1582 jvalue val; | |
| 1583 val.d = value; | |
| 1584 return force_early_return(java_thread, val, dtos); | |
| 1585 } /* end ForceEarlyReturnDouble */ | |
| 1586 | |
| 1587 | |
| 1588 // Threads_lock NOT held, java_thread not protected by lock | |
| 1589 // java_thread - pre-checked | |
| 1590 jvmtiError | |
| 1591 JvmtiEnv::ForceEarlyReturnVoid(JavaThread* java_thread) { | |
| 1592 jvalue val; | |
| 1593 val.j = 0L; | |
| 1594 return force_early_return(java_thread, val, vtos); | |
| 1595 } /* end ForceEarlyReturnVoid */ | |
| 1596 | |
| 1597 | |
| 1598 // | |
| 1599 // Heap functions | |
| 1600 // | |
| 1601 | |
| 1602 // klass - NULL is a valid value, must be checked | |
| 1603 // initial_object - NULL is a valid value, must be checked | |
| 1604 // callbacks - pre-checked for NULL | |
| 1605 // user_data - NULL is a valid value, must be checked | |
| 1606 jvmtiError | |
| 1607 JvmtiEnv::FollowReferences(jint heap_filter, jclass klass, jobject initial_object, const jvmtiHeapCallbacks* callbacks, const void* user_data) { | |
| 1608 // check klass if provided | |
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1609 Klass* k_oop = NULL; |
| 0 | 1610 if (klass != NULL) { |
| 1611 oop k_mirror = JNIHandles::resolve_external_guard(klass); | |
| 1612 if (k_mirror == NULL) { | |
| 1613 return JVMTI_ERROR_INVALID_CLASS; | |
| 1614 } | |
| 1615 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 1616 return JVMTI_ERROR_NONE; | |
| 1617 } | |
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1618 k_oop = java_lang_Class::as_Klass(k_mirror); |
| 0 | 1619 if (k_oop == NULL) { |
| 1620 return JVMTI_ERROR_INVALID_CLASS; | |
| 1621 } | |
| 1622 } | |
| 1623 | |
| 1624 Thread *thread = Thread::current(); | |
| 1625 HandleMark hm(thread); | |
| 1626 KlassHandle kh (thread, k_oop); | |
| 1627 | |
| 1628 TraceTime t("FollowReferences", TraceJVMTIObjectTagging); | |
| 1629 JvmtiTagMap::tag_map_for(this)->follow_references(heap_filter, kh, initial_object, callbacks, user_data); | |
| 1630 return JVMTI_ERROR_NONE; | |
| 1631 } /* end FollowReferences */ | |
| 1632 | |
| 1633 | |
| 1634 // klass - NULL is a valid value, must be checked | |
| 1635 // callbacks - pre-checked for NULL | |
| 1636 // user_data - NULL is a valid value, must be checked | |
| 1637 jvmtiError | |
| 1638 JvmtiEnv::IterateThroughHeap(jint heap_filter, jclass klass, const jvmtiHeapCallbacks* callbacks, const void* user_data) { | |
| 1639 // check klass if provided | |
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1640 Klass* k_oop = NULL; |
| 0 | 1641 if (klass != NULL) { |
| 1642 oop k_mirror = JNIHandles::resolve_external_guard(klass); | |
| 1643 if (k_mirror == NULL) { | |
| 1644 return JVMTI_ERROR_INVALID_CLASS; | |
| 1645 } | |
| 1646 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 1647 return JVMTI_ERROR_NONE; | |
| 1648 } | |
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1649 k_oop = java_lang_Class::as_Klass(k_mirror); |
| 0 | 1650 if (k_oop == NULL) { |
| 1651 return JVMTI_ERROR_INVALID_CLASS; | |
| 1652 } | |
| 1653 } | |
| 1654 | |
| 1655 Thread *thread = Thread::current(); | |
| 1656 HandleMark hm(thread); | |
| 1657 KlassHandle kh (thread, k_oop); | |
| 1658 | |
| 1659 TraceTime t("IterateThroughHeap", TraceJVMTIObjectTagging); | |
| 1660 JvmtiTagMap::tag_map_for(this)->iterate_through_heap(heap_filter, kh, callbacks, user_data); | |
| 1661 return JVMTI_ERROR_NONE; | |
| 1662 } /* end IterateThroughHeap */ | |
| 1663 | |
| 1664 | |
| 1665 // tag_ptr - pre-checked for NULL | |
| 1666 jvmtiError | |
| 1667 JvmtiEnv::GetTag(jobject object, jlong* tag_ptr) { | |
| 1668 oop o = JNIHandles::resolve_external_guard(object); | |
| 1669 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
| 1670 *tag_ptr = JvmtiTagMap::tag_map_for(this)->get_tag(object); | |
| 1671 return JVMTI_ERROR_NONE; | |
| 1672 } /* end GetTag */ | |
| 1673 | |
| 1674 | |
| 1675 jvmtiError | |
| 1676 JvmtiEnv::SetTag(jobject object, jlong tag) { | |
| 1677 oop o = JNIHandles::resolve_external_guard(object); | |
| 1678 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
| 1679 JvmtiTagMap::tag_map_for(this)->set_tag(object, tag); | |
| 1680 return JVMTI_ERROR_NONE; | |
| 1681 } /* end SetTag */ | |
| 1682 | |
| 1683 | |
| 1684 // tag_count - pre-checked to be greater than or equal to 0 | |
| 1685 // tags - pre-checked for NULL | |
| 1686 // count_ptr - pre-checked for NULL | |
| 1687 // object_result_ptr - NULL is a valid value, must be checked | |
| 1688 // tag_result_ptr - NULL is a valid value, must be checked | |
| 1689 jvmtiError | |
| 1690 JvmtiEnv::GetObjectsWithTags(jint tag_count, const jlong* tags, jint* count_ptr, jobject** object_result_ptr, jlong** tag_result_ptr) { | |
| 1691 TraceTime t("GetObjectsWithTags", TraceJVMTIObjectTagging); | |
| 1692 return JvmtiTagMap::tag_map_for(this)->get_objects_with_tags((jlong*)tags, tag_count, count_ptr, object_result_ptr, tag_result_ptr); | |
| 1693 } /* end GetObjectsWithTags */ | |
| 1694 | |
| 1695 | |
| 1696 jvmtiError | |
| 1697 JvmtiEnv::ForceGarbageCollection() { | |
| 1698 Universe::heap()->collect(GCCause::_jvmti_force_gc); | |
| 1699 return JVMTI_ERROR_NONE; | |
| 1700 } /* end ForceGarbageCollection */ | |
| 1701 | |
| 1702 | |
| 1703 // | |
| 1704 // Heap (1.0) functions | |
| 1705 // | |
| 1706 | |
| 1707 // object_reference_callback - pre-checked for NULL | |
| 1708 // user_data - NULL is a valid value, must be checked | |
| 1709 jvmtiError | |
| 1710 JvmtiEnv::IterateOverObjectsReachableFromObject(jobject object, jvmtiObjectReferenceCallback object_reference_callback, const void* user_data) { | |
| 1711 oop o = JNIHandles::resolve_external_guard(object); | |
| 1712 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
| 1713 JvmtiTagMap::tag_map_for(this)->iterate_over_objects_reachable_from_object(object, object_reference_callback, user_data); | |
| 1714 return JVMTI_ERROR_NONE; | |
| 1715 } /* end IterateOverObjectsReachableFromObject */ | |
| 1716 | |
| 1717 | |
| 1718 // heap_root_callback - NULL is a valid value, must be checked | |
| 1719 // stack_ref_callback - NULL is a valid value, must be checked | |
| 1720 // object_ref_callback - NULL is a valid value, must be checked | |
| 1721 // user_data - NULL is a valid value, must be checked | |
| 1722 jvmtiError | |
| 1723 JvmtiEnv::IterateOverReachableObjects(jvmtiHeapRootCallback heap_root_callback, jvmtiStackReferenceCallback stack_ref_callback, jvmtiObjectReferenceCallback object_ref_callback, const void* user_data) { | |
| 1724 TraceTime t("IterateOverReachableObjects", TraceJVMTIObjectTagging); | |
| 1725 JvmtiTagMap::tag_map_for(this)->iterate_over_reachable_objects(heap_root_callback, stack_ref_callback, object_ref_callback, user_data); | |
| 1726 return JVMTI_ERROR_NONE; | |
| 1727 } /* end IterateOverReachableObjects */ | |
| 1728 | |
| 1729 | |
| 1730 // heap_object_callback - pre-checked for NULL | |
| 1731 // user_data - NULL is a valid value, must be checked | |
| 1732 jvmtiError | |
| 1733 JvmtiEnv::IterateOverHeap(jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) { | |
| 1734 TraceTime t("IterateOverHeap", TraceJVMTIObjectTagging); | |
| 1735 Thread *thread = Thread::current(); | |
| 1736 HandleMark hm(thread); | |
| 1737 JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, KlassHandle(), heap_object_callback, user_data); | |
| 1738 return JVMTI_ERROR_NONE; | |
| 1739 } /* end IterateOverHeap */ | |
| 1740 | |
| 1741 | |
| 1742 // k_mirror - may be primitive, this must be checked | |
| 1743 // heap_object_callback - pre-checked for NULL | |
| 1744 // user_data - NULL is a valid value, must be checked | |
| 1745 jvmtiError | |
| 1746 JvmtiEnv::IterateOverInstancesOfClass(oop k_mirror, jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) { | |
| 1747 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 1748 // DO PRIMITIVE CLASS PROCESSING | |
| 1749 return JVMTI_ERROR_NONE; | |
| 1750 } | |
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1751 Klass* k_oop = java_lang_Class::as_Klass(k_mirror); |
| 0 | 1752 if (k_oop == NULL) { |
| 1753 return JVMTI_ERROR_INVALID_CLASS; | |
| 1754 } | |
| 1755 Thread *thread = Thread::current(); | |
| 1756 HandleMark hm(thread); | |
| 1757 KlassHandle klass (thread, k_oop); | |
| 1758 TraceTime t("IterateOverInstancesOfClass", TraceJVMTIObjectTagging); | |
| 1759 JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, klass, heap_object_callback, user_data); | |
| 1760 return JVMTI_ERROR_NONE; | |
| 1761 } /* end IterateOverInstancesOfClass */ | |
| 1762 | |
| 1763 | |
| 1764 // | |
| 1765 // Local Variable functions | |
| 1766 // | |
| 1767 | |
| 1768 // Threads_lock NOT held, java_thread not protected by lock | |
| 1769 // java_thread - pre-checked | |
| 1770 // java_thread - unchecked | |
| 1771 // depth - pre-checked as non-negative | |
| 1772 // value_ptr - pre-checked for NULL | |
| 1773 jvmtiError | |
| 1774 JvmtiEnv::GetLocalObject(JavaThread* java_thread, jint depth, jint slot, jobject* value_ptr) { | |
| 1775 JavaThread* current_thread = JavaThread::current(); | |
| 1776 // rm object is created to clean up the javaVFrame created in | |
| 1777 // doit_prologue(), but after doit() is finished with it. | |
| 1778 ResourceMark rm(current_thread); | |
| 1779 | |
| 1780 VM_GetOrSetLocal op(java_thread, current_thread, depth, slot); | |
| 1781 VMThread::execute(&op); | |
| 1782 jvmtiError err = op.result(); | |
| 1783 if (err != JVMTI_ERROR_NONE) { | |
| 1784 return err; | |
| 1785 } else { | |
| 1786 *value_ptr = op.value().l; | |
| 1787 return JVMTI_ERROR_NONE; | |
| 1788 } | |
| 1789 } /* end GetLocalObject */ | |
| 1790 | |
| 2019 | 1791 // Threads_lock NOT held, java_thread not protected by lock |
| 1792 // java_thread - pre-checked | |
| 1793 // java_thread - unchecked | |
| 1794 // depth - pre-checked as non-negative | |
| 1795 // value - pre-checked for NULL | |
| 1796 jvmtiError | |
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1797 JvmtiEnv::GetLocalInstance(JavaThread* java_thread, jint depth, jobject* value_ptr){ |
| 2019 | 1798 JavaThread* current_thread = JavaThread::current(); |
| 1799 // rm object is created to clean up the javaVFrame created in | |
| 1800 // doit_prologue(), but after doit() is finished with it. | |
| 1801 ResourceMark rm(current_thread); | |
| 1802 | |
| 1803 VM_GetReceiver op(java_thread, current_thread, depth); | |
| 1804 VMThread::execute(&op); | |
| 1805 jvmtiError err = op.result(); | |
| 1806 if (err != JVMTI_ERROR_NONE) { | |
| 1807 return err; | |
| 1808 } else { | |
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1809 *value_ptr = op.value().l; |
| 2019 | 1810 return JVMTI_ERROR_NONE; |
| 1811 } | |
| 1812 } /* end GetLocalInstance */ | |
| 1813 | |
| 0 | 1814 |
| 1815 // Threads_lock NOT held, java_thread not protected by lock | |
| 1816 // java_thread - pre-checked | |
| 1817 // java_thread - unchecked | |
| 1818 // depth - pre-checked as non-negative | |
| 1819 // value_ptr - pre-checked for NULL | |
| 1820 jvmtiError | |
| 1821 JvmtiEnv::GetLocalInt(JavaThread* java_thread, jint depth, jint slot, jint* value_ptr) { | |
| 1822 // rm object is created to clean up the javaVFrame created in | |
| 1823 // doit_prologue(), but after doit() is finished with it. | |
| 1824 ResourceMark rm; | |
| 1825 | |
| 1826 VM_GetOrSetLocal op(java_thread, depth, slot, T_INT); | |
| 1827 VMThread::execute(&op); | |
| 1828 *value_ptr = op.value().i; | |
| 1829 return op.result(); | |
| 1830 } /* end GetLocalInt */ | |
| 1831 | |
| 1832 | |
| 1833 // Threads_lock NOT held, java_thread not protected by lock | |
| 1834 // java_thread - pre-checked | |
| 1835 // java_thread - unchecked | |
| 1836 // depth - pre-checked as non-negative | |
| 1837 // value_ptr - pre-checked for NULL | |
| 1838 jvmtiError | |
| 1839 JvmtiEnv::GetLocalLong(JavaThread* java_thread, jint depth, jint slot, jlong* value_ptr) { | |
| 1840 // rm object is created to clean up the javaVFrame created in | |
| 1841 // doit_prologue(), but after doit() is finished with it. | |
| 1842 ResourceMark rm; | |
| 1843 | |
| 1844 VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG); | |
| 1845 VMThread::execute(&op); | |
| 1846 *value_ptr = op.value().j; | |
| 1847 return op.result(); | |
| 1848 } /* end GetLocalLong */ | |
| 1849 | |
| 1850 | |
| 1851 // Threads_lock NOT held, java_thread not protected by lock | |
| 1852 // java_thread - pre-checked | |
| 1853 // java_thread - unchecked | |
| 1854 // depth - pre-checked as non-negative | |
| 1855 // value_ptr - pre-checked for NULL | |
| 1856 jvmtiError | |
| 1857 JvmtiEnv::GetLocalFloat(JavaThread* java_thread, jint depth, jint slot, jfloat* value_ptr) { | |
| 1858 // rm object is created to clean up the javaVFrame created in | |
| 1859 // doit_prologue(), but after doit() is finished with it. | |
| 1860 ResourceMark rm; | |
| 1861 | |
| 1862 VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT); | |
| 1863 VMThread::execute(&op); | |
| 1864 *value_ptr = op.value().f; | |
| 1865 return op.result(); | |
| 1866 } /* end GetLocalFloat */ | |
| 1867 | |
| 1868 | |
| 1869 // Threads_lock NOT held, java_thread not protected by lock | |
| 1870 // java_thread - pre-checked | |
| 1871 // java_thread - unchecked | |
| 1872 // depth - pre-checked as non-negative | |
| 1873 // value_ptr - pre-checked for NULL | |
| 1874 jvmtiError | |
| 1875 JvmtiEnv::GetLocalDouble(JavaThread* java_thread, jint depth, jint slot, jdouble* value_ptr) { | |
| 1876 // rm object is created to clean up the javaVFrame created in | |
| 1877 // doit_prologue(), but after doit() is finished with it. | |
| 1878 ResourceMark rm; | |
| 1879 | |
| 1880 VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE); | |
| 1881 VMThread::execute(&op); | |
| 1882 *value_ptr = op.value().d; | |
| 1883 return op.result(); | |
| 1884 } /* end GetLocalDouble */ | |
| 1885 | |
| 1886 | |
| 1887 // Threads_lock NOT held, java_thread not protected by lock | |
| 1888 // java_thread - pre-checked | |
| 1889 // java_thread - unchecked | |
| 1890 // depth - pre-checked as non-negative | |
| 1891 jvmtiError | |
| 1892 JvmtiEnv::SetLocalObject(JavaThread* java_thread, jint depth, jint slot, jobject value) { | |
| 1893 // rm object is created to clean up the javaVFrame created in | |
| 1894 // doit_prologue(), but after doit() is finished with it. | |
| 1895 ResourceMark rm; | |
| 1896 jvalue val; | |
| 1897 val.l = value; | |
| 1898 VM_GetOrSetLocal op(java_thread, depth, slot, T_OBJECT, val); | |
| 1899 VMThread::execute(&op); | |
| 1900 return op.result(); | |
| 1901 } /* end SetLocalObject */ | |
| 1902 | |
| 1903 | |
| 1904 // Threads_lock NOT held, java_thread not protected by lock | |
| 1905 // java_thread - pre-checked | |
| 1906 // java_thread - unchecked | |
| 1907 // depth - pre-checked as non-negative | |
| 1908 jvmtiError | |
| 1909 JvmtiEnv::SetLocalInt(JavaThread* java_thread, jint depth, jint slot, jint value) { | |
| 1910 // rm object is created to clean up the javaVFrame created in | |
| 1911 // doit_prologue(), but after doit() is finished with it. | |
| 1912 ResourceMark rm; | |
| 1913 jvalue val; | |
| 1914 val.i = value; | |
| 1915 VM_GetOrSetLocal op(java_thread, depth, slot, T_INT, val); | |
| 1916 VMThread::execute(&op); | |
| 1917 return op.result(); | |
| 1918 } /* end SetLocalInt */ | |
| 1919 | |
| 1920 | |
| 1921 // Threads_lock NOT held, java_thread not protected by lock | |
| 1922 // java_thread - pre-checked | |
| 1923 // java_thread - unchecked | |
| 1924 // depth - pre-checked as non-negative | |
| 1925 jvmtiError | |
| 1926 JvmtiEnv::SetLocalLong(JavaThread* java_thread, jint depth, jint slot, jlong value) { | |
| 1927 // rm object is created to clean up the javaVFrame created in | |
| 1928 // doit_prologue(), but after doit() is finished with it. | |
| 1929 ResourceMark rm; | |
| 1930 jvalue val; | |
| 1931 val.j = value; | |
| 1932 VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG, val); | |
| 1933 VMThread::execute(&op); | |
| 1934 return op.result(); | |
| 1935 } /* end SetLocalLong */ | |
| 1936 | |
| 1937 | |
| 1938 // Threads_lock NOT held, java_thread not protected by lock | |
| 1939 // java_thread - pre-checked | |
| 1940 // java_thread - unchecked | |
| 1941 // depth - pre-checked as non-negative | |
| 1942 jvmtiError | |
| 1943 JvmtiEnv::SetLocalFloat(JavaThread* java_thread, jint depth, jint slot, jfloat value) { | |
| 1944 // rm object is created to clean up the javaVFrame created in | |
| 1945 // doit_prologue(), but after doit() is finished with it. | |
| 1946 ResourceMark rm; | |
| 1947 jvalue val; | |
| 1948 val.f = value; | |
| 1949 VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT, val); | |
| 1950 VMThread::execute(&op); | |
| 1951 return op.result(); | |
| 1952 } /* end SetLocalFloat */ | |
| 1953 | |
| 1954 | |
| 1955 // Threads_lock NOT held, java_thread not protected by lock | |
| 1956 // java_thread - pre-checked | |
| 1957 // java_thread - unchecked | |
| 1958 // depth - pre-checked as non-negative | |
| 1959 jvmtiError | |
| 1960 JvmtiEnv::SetLocalDouble(JavaThread* java_thread, jint depth, jint slot, jdouble value) { | |
| 1961 // rm object is created to clean up the javaVFrame created in | |
| 1962 // doit_prologue(), but after doit() is finished with it. | |
| 1963 ResourceMark rm; | |
| 1964 jvalue val; | |
| 1965 val.d = value; | |
| 1966 VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE, val); | |
| 1967 VMThread::execute(&op); | |
| 1968 return op.result(); | |
| 1969 } /* end SetLocalDouble */ | |
| 1970 | |
| 1971 | |
| 1972 // | |
| 1973 // Breakpoint functions | |
| 1974 // | |
| 1975 | |
| 1976 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 1977 jvmtiError | |
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1978 JvmtiEnv::SetBreakpoint(Method* method_oop, jlocation location) { |
| 0 | 1979 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
| 1980 if (location < 0) { // simple invalid location check first | |
| 1981 return JVMTI_ERROR_INVALID_LOCATION; | |
| 1982 } | |
| 1983 // verify that the breakpoint is not past the end of the method | |
| 1984 if (location >= (jlocation) method_oop->code_size()) { | |
| 1985 return JVMTI_ERROR_INVALID_LOCATION; | |
| 1986 } | |
| 1987 | |
| 1988 ResourceMark rm; | |
| 1989 JvmtiBreakpoint bp(method_oop, location); | |
| 1990 JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints(); | |
| 1991 if (jvmti_breakpoints.set(bp) == JVMTI_ERROR_DUPLICATE) | |
| 1992 return JVMTI_ERROR_DUPLICATE; | |
| 1993 | |
| 1994 if (TraceJVMTICalls) { | |
| 1995 jvmti_breakpoints.print(); | |
| 1996 } | |
| 1997 | |
| 1998 return JVMTI_ERROR_NONE; | |
| 1999 } /* end SetBreakpoint */ | |
| 2000 | |
| 2001 | |
| 2002 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2003 jvmtiError | |
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2004 JvmtiEnv::ClearBreakpoint(Method* method_oop, jlocation location) { |
| 0 | 2005 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
| 2006 | |
| 2007 if (location < 0) { // simple invalid location check first | |
| 2008 return JVMTI_ERROR_INVALID_LOCATION; | |
| 2009 } | |
| 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 JvmtiBreakpoint bp(method_oop, location); | |
| 2017 | |
| 2018 JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints(); | |
| 2019 if (jvmti_breakpoints.clear(bp) == JVMTI_ERROR_NOT_FOUND) | |
| 2020 return JVMTI_ERROR_NOT_FOUND; | |
| 2021 | |
| 2022 if (TraceJVMTICalls) { | |
| 2023 jvmti_breakpoints.print(); | |
| 2024 } | |
| 2025 | |
| 2026 return JVMTI_ERROR_NONE; | |
| 2027 } /* end ClearBreakpoint */ | |
| 2028 | |
| 2029 | |
| 2030 // | |
| 2031 // Watched Field functions | |
| 2032 // | |
| 2033 | |
| 2034 jvmtiError | |
| 2035 JvmtiEnv::SetFieldAccessWatch(fieldDescriptor* fdesc_ptr) { | |
| 2036 // make sure we haven't set this watch before | |
| 2037 if (fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_DUPLICATE; | |
| 2038 fdesc_ptr->set_is_field_access_watched(true); | |
| 2039 | |
| 2040 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, true); | |
| 2041 | |
| 2042 return JVMTI_ERROR_NONE; | |
| 2043 } /* end SetFieldAccessWatch */ | |
| 2044 | |
| 2045 | |
| 2046 jvmtiError | |
| 2047 JvmtiEnv::ClearFieldAccessWatch(fieldDescriptor* fdesc_ptr) { | |
| 2048 // make sure we have a watch to clear | |
| 2049 if (!fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_NOT_FOUND; | |
| 2050 fdesc_ptr->set_is_field_access_watched(false); | |
| 2051 | |
| 2052 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, false); | |
| 2053 | |
| 2054 return JVMTI_ERROR_NONE; | |
| 2055 } /* end ClearFieldAccessWatch */ | |
| 2056 | |
| 2057 | |
| 2058 jvmtiError | |
| 2059 JvmtiEnv::SetFieldModificationWatch(fieldDescriptor* fdesc_ptr) { | |
| 2060 // make sure we haven't set this watch before | |
| 2061 if (fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_DUPLICATE; | |
| 2062 fdesc_ptr->set_is_field_modification_watched(true); | |
| 2063 | |
| 2064 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, true); | |
| 2065 | |
| 2066 return JVMTI_ERROR_NONE; | |
| 2067 } /* end SetFieldModificationWatch */ | |
| 2068 | |
| 2069 | |
| 2070 jvmtiError | |
| 2071 JvmtiEnv::ClearFieldModificationWatch(fieldDescriptor* fdesc_ptr) { | |
| 2072 // make sure we have a watch to clear | |
| 2073 if (!fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_NOT_FOUND; | |
| 2074 fdesc_ptr->set_is_field_modification_watched(false); | |
| 2075 | |
| 2076 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, false); | |
| 2077 | |
| 2078 return JVMTI_ERROR_NONE; | |
| 2079 } /* end ClearFieldModificationWatch */ | |
| 2080 | |
| 2081 // | |
| 2082 // Class functions | |
| 2083 // | |
| 2084 | |
| 2085 | |
| 2086 // k_mirror - may be primitive, this must be checked | |
| 2087 // signature_ptr - NULL is a valid value, must be checked | |
| 2088 // generic_ptr - NULL is a valid value, must be checked | |
| 2089 jvmtiError | |
| 2090 JvmtiEnv::GetClassSignature(oop k_mirror, char** signature_ptr, char** generic_ptr) { | |
| 2091 ResourceMark rm; | |
| 2092 bool isPrimitive = java_lang_Class::is_primitive(k_mirror); | |
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2093 Klass* k = NULL; |
| 0 | 2094 if (!isPrimitive) { |
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2095 k = java_lang_Class::as_Klass(k_mirror); |
| 0 | 2096 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
| 2097 } | |
| 2098 if (signature_ptr != NULL) { | |
| 2099 char* result = NULL; | |
| 2100 if (isPrimitive) { | |
| 2101 char tchar = type2char(java_lang_Class::primitive_type(k_mirror)); | |
| 2102 result = (char*) jvmtiMalloc(2); | |
| 2103 result[0] = tchar; | |
| 2104 result[1] = '\0'; | |
| 2105 } else { | |
| 6983 | 2106 const char* class_sig = k->signature_name(); |
| 0 | 2107 result = (char *) jvmtiMalloc(strlen(class_sig)+1); |
| 2108 strcpy(result, class_sig); | |
| 2109 } | |
| 2110 *signature_ptr = result; | |
| 2111 } | |
| 2112 if (generic_ptr != NULL) { | |
| 2113 *generic_ptr = NULL; | |
| 6983 | 2114 if (!isPrimitive && k->oop_is_instance()) { |
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2115 Symbol* soo = InstanceKlass::cast(k)->generic_signature(); |
| 0 | 2116 if (soo != NULL) { |
| 2117 const char *gen_sig = soo->as_C_string(); | |
| 2118 if (gen_sig != NULL) { | |
| 2119 char* gen_result; | |
| 2120 jvmtiError err = allocate(strlen(gen_sig) + 1, | |
| 2121 (unsigned char **)&gen_result); | |
| 2122 if (err != JVMTI_ERROR_NONE) { | |
| 2123 return err; | |
| 2124 } | |
| 2125 strcpy(gen_result, gen_sig); | |
| 2126 *generic_ptr = gen_result; | |
| 2127 } | |
| 2128 } | |
| 2129 } | |
| 2130 } | |
| 2131 return JVMTI_ERROR_NONE; | |
| 2132 } /* end GetClassSignature */ | |
| 2133 | |
| 2134 | |
| 2135 // k_mirror - may be primitive, this must be checked | |
| 2136 // status_ptr - pre-checked for NULL | |
| 2137 jvmtiError | |
| 2138 JvmtiEnv::GetClassStatus(oop k_mirror, jint* status_ptr) { | |
| 2139 jint result = 0; | |
| 2140 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2141 result |= JVMTI_CLASS_STATUS_PRIMITIVE; | |
| 2142 } else { | |
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2143 Klass* k = java_lang_Class::as_Klass(k_mirror); |
| 0 | 2144 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
| 6983 | 2145 result = k->jvmti_class_status(); |
| 0 | 2146 } |
| 2147 *status_ptr = result; | |
| 2148 | |
| 2149 return JVMTI_ERROR_NONE; | |
| 2150 } /* end GetClassStatus */ | |
| 2151 | |
| 2152 | |
| 2153 // k_mirror - may be primitive, this must be checked | |
| 2154 // source_name_ptr - pre-checked for NULL | |
| 2155 jvmtiError | |
| 2156 JvmtiEnv::GetSourceFileName(oop k_mirror, char** source_name_ptr) { | |
| 2157 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2158 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2159 } | |
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2160 Klass* k_klass = java_lang_Class::as_Klass(k_mirror); |
| 0 | 2161 NULL_CHECK(k_klass, JVMTI_ERROR_INVALID_CLASS); |
| 2162 | |
| 6983 | 2163 if (!k_klass->oop_is_instance()) { |
| 0 | 2164 return JVMTI_ERROR_ABSENT_INFORMATION; |
| 2165 } | |
| 2166 | |
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2167 Symbol* sfnOop = InstanceKlass::cast(k_klass)->source_file_name(); |
| 0 | 2168 NULL_CHECK(sfnOop, JVMTI_ERROR_ABSENT_INFORMATION); |
| 2169 { | |
| 2170 JavaThread* current_thread = JavaThread::current(); | |
| 2171 ResourceMark rm(current_thread); | |
| 2172 const char* sfncp = (const char*) sfnOop->as_C_string(); | |
| 2173 *source_name_ptr = (char *) jvmtiMalloc(strlen(sfncp)+1); | |
| 2174 strcpy(*source_name_ptr, sfncp); | |
| 2175 } | |
| 2176 | |
| 2177 return JVMTI_ERROR_NONE; | |
| 2178 } /* end GetSourceFileName */ | |
| 2179 | |
| 2180 | |
| 2181 // k_mirror - may be primitive, this must be checked | |
| 2182 // modifiers_ptr - pre-checked for NULL | |
| 2183 jvmtiError | |
| 2184 JvmtiEnv::GetClassModifiers(oop k_mirror, jint* modifiers_ptr) { | |
| 2185 JavaThread* current_thread = JavaThread::current(); | |
| 2186 jint result = 0; | |
| 2187 if (!java_lang_Class::is_primitive(k_mirror)) { | |
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2188 Klass* k = java_lang_Class::as_Klass(k_mirror); |
| 0 | 2189 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
| 6983 | 2190 result = k->compute_modifier_flags(current_thread); |
| 0 | 2191 JavaThread* THREAD = current_thread; // pass to macros |
| 2192 if (HAS_PENDING_EXCEPTION) { | |
| 2193 CLEAR_PENDING_EXCEPTION; | |
| 2194 return JVMTI_ERROR_INTERNAL; | |
| 2195 }; | |
| 2196 | |
| 2197 // Reset the deleted ACC_SUPER bit ( deleted in compute_modifier_flags()). | |
| 6983 | 2198 if(k->is_super()) { |
| 0 | 2199 result |= JVM_ACC_SUPER; |
| 2200 } | |
| 2201 } else { | |
| 2202 result = (JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC); | |
| 2203 } | |
| 2204 *modifiers_ptr = result; | |
| 2205 | |
| 2206 return JVMTI_ERROR_NONE; | |
| 2207 } /* end GetClassModifiers */ | |
| 2208 | |
| 2209 | |
| 2210 // k_mirror - may be primitive, this must be checked | |
| 2211 // method_count_ptr - pre-checked for NULL | |
| 2212 // methods_ptr - pre-checked for NULL | |
| 2213 jvmtiError | |
| 2214 JvmtiEnv::GetClassMethods(oop k_mirror, jint* method_count_ptr, jmethodID** methods_ptr) { | |
| 2215 JavaThread* current_thread = JavaThread::current(); | |
| 2216 HandleMark hm(current_thread); | |
| 2217 | |
| 2218 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2219 *method_count_ptr = 0; | |
| 2220 *methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID)); | |
| 2221 return JVMTI_ERROR_NONE; | |
| 2222 } | |
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2223 Klass* k = java_lang_Class::as_Klass(k_mirror); |
| 0 | 2224 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
| 2225 | |
| 2226 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
| 6983 | 2227 if (!(k->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) { |
| 0 | 2228 return JVMTI_ERROR_CLASS_NOT_PREPARED; |
| 2229 } | |
| 2230 | |
| 6983 | 2231 if (!k->oop_is_instance()) { |
| 0 | 2232 *method_count_ptr = 0; |
| 2233 *methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID)); | |
| 2234 return JVMTI_ERROR_NONE; | |
| 2235 } | |
| 2236 instanceKlassHandle instanceK_h(current_thread, k); | |
| 2237 // Allocate the result and fill it in | |
| 2238 int result_length = instanceK_h->methods()->length(); | |
| 2239 jmethodID* result_list = (jmethodID*)jvmtiMalloc(result_length * sizeof(jmethodID)); | |
| 2240 int index; | |
| 2241 if (JvmtiExport::can_maintain_original_method_order()) { | |
| 2242 // Use the original method ordering indices stored in the class, so we can emit | |
| 2243 // jmethodIDs in the order they appeared in the class file | |
| 2244 for (index = 0; index < result_length; index++) { | |
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2245 Method* m = instanceK_h->methods()->at(index); |
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2246 int original_index = instanceK_h->method_ordering()->at(index); |
| 0 | 2247 assert(original_index >= 0 && original_index < result_length, "invalid original method index"); |
| 2248 jmethodID id = m->jmethod_id(); | |
| 2249 result_list[original_index] = id; | |
| 2250 } | |
| 2251 } else { | |
| 2252 // otherwise just copy in any order | |
| 2253 for (index = 0; index < result_length; index++) { | |
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2254 Method* m = instanceK_h->methods()->at(index); |
| 0 | 2255 jmethodID id = m->jmethod_id(); |
| 2256 result_list[index] = id; | |
| 2257 } | |
| 2258 } | |
| 2259 // Fill in return value. | |
| 2260 *method_count_ptr = result_length; | |
| 2261 *methods_ptr = result_list; | |
| 2262 | |
| 2263 return JVMTI_ERROR_NONE; | |
| 2264 } /* end GetClassMethods */ | |
| 2265 | |
| 2266 | |
| 2267 // k_mirror - may be primitive, this must be checked | |
| 2268 // field_count_ptr - pre-checked for NULL | |
| 2269 // fields_ptr - pre-checked for NULL | |
| 2270 jvmtiError | |
| 2271 JvmtiEnv::GetClassFields(oop k_mirror, jint* field_count_ptr, jfieldID** fields_ptr) { | |
| 2272 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2273 *field_count_ptr = 0; | |
| 2274 *fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID)); | |
| 2275 return JVMTI_ERROR_NONE; | |
| 2276 } | |
| 2277 JavaThread* current_thread = JavaThread::current(); | |
| 2278 HandleMark hm(current_thread); | |
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2279 Klass* k = java_lang_Class::as_Klass(k_mirror); |
| 0 | 2280 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
| 2281 | |
| 2282 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
| 6983 | 2283 if (!(k->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) { |
| 0 | 2284 return JVMTI_ERROR_CLASS_NOT_PREPARED; |
| 2285 } | |
| 2286 | |
| 6983 | 2287 if (!k->oop_is_instance()) { |
| 0 | 2288 *field_count_ptr = 0; |
| 2289 *fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID)); | |
| 2290 return JVMTI_ERROR_NONE; | |
| 2291 } | |
| 2292 | |
| 2293 | |
| 2294 instanceKlassHandle instanceK_h(current_thread, k); | |
| 2295 | |
| 2296 int result_count = 0; | |
| 2297 // First, count the fields. | |
| 2298 FilteredFieldStream flds(instanceK_h, true, true); | |
| 2299 result_count = flds.field_count(); | |
| 2300 | |
| 2301 // Allocate the result and fill it in | |
| 2302 jfieldID* result_list = (jfieldID*) jvmtiMalloc(result_count * sizeof(jfieldID)); | |
| 2303 // The JVMTI spec requires fields in the order they occur in the class file, | |
| 2304 // this is the reverse order of what FieldStream hands out. | |
| 2305 int id_index = (result_count - 1); | |
| 2306 | |
| 2307 for (FilteredFieldStream src_st(instanceK_h, true, true); !src_st.eos(); src_st.next()) { | |
| 2308 result_list[id_index--] = jfieldIDWorkaround::to_jfieldID( | |
| 2309 instanceK_h, src_st.offset(), | |
| 2310 src_st.access_flags().is_static()); | |
| 2311 } | |
| 2312 assert(id_index == -1, "just checking"); | |
| 2313 // Fill in the results | |
| 2314 *field_count_ptr = result_count; | |
| 2315 *fields_ptr = result_list; | |
| 2316 | |
| 2317 return JVMTI_ERROR_NONE; | |
| 2318 } /* end GetClassFields */ | |
| 2319 | |
| 2320 | |
| 2321 // k_mirror - may be primitive, this must be checked | |
| 2322 // interface_count_ptr - pre-checked for NULL | |
| 2323 // interfaces_ptr - pre-checked for NULL | |
| 2324 jvmtiError | |
| 2325 JvmtiEnv::GetImplementedInterfaces(oop k_mirror, jint* interface_count_ptr, jclass** interfaces_ptr) { | |
| 2326 { | |
| 2327 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2328 *interface_count_ptr = 0; | |
| 2329 *interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass)); | |
| 2330 return JVMTI_ERROR_NONE; | |
| 2331 } | |
| 2332 JavaThread* current_thread = JavaThread::current(); | |
| 2333 HandleMark hm(current_thread); | |
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2334 Klass* k = java_lang_Class::as_Klass(k_mirror); |
| 0 | 2335 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
| 2336 | |
| 2337 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
| 6983 | 2338 if (!(k->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) |
| 0 | 2339 return JVMTI_ERROR_CLASS_NOT_PREPARED; |
| 2340 | |
| 6983 | 2341 if (!k->oop_is_instance()) { |
| 0 | 2342 *interface_count_ptr = 0; |
| 2343 *interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass)); | |
| 2344 return JVMTI_ERROR_NONE; | |
| 2345 } | |
| 2346 | |
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2347 Array<Klass*>* interface_list = InstanceKlass::cast(k)->local_interfaces(); |
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2348 const int result_length = (interface_list == NULL ? 0 : interface_list->length()); |
| 0 | 2349 jclass* result_list = (jclass*) jvmtiMalloc(result_length * sizeof(jclass)); |
| 2350 for (int i_index = 0; i_index < result_length; i_index += 1) { | |
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2351 Klass* klass_at = interface_list->at(i_index); |
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2352 assert(klass_at->is_klass(), "interfaces must be Klass*s"); |
| 6983 | 2353 assert(klass_at->is_interface(), "interfaces must be interfaces"); |
| 2354 oop mirror_at = klass_at->java_mirror(); | |
| 0 | 2355 Handle handle_at = Handle(current_thread, mirror_at); |
| 2356 result_list[i_index] = (jclass) jni_reference(handle_at); | |
| 2357 } | |
| 2358 *interface_count_ptr = result_length; | |
| 2359 *interfaces_ptr = result_list; | |
| 2360 } | |
| 2361 | |
| 2362 return JVMTI_ERROR_NONE; | |
| 2363 } /* end GetImplementedInterfaces */ | |
| 2364 | |
| 2365 | |
| 2366 // k_mirror - may be primitive, this must be checked | |
| 2367 // minor_version_ptr - pre-checked for NULL | |
| 2368 // major_version_ptr - pre-checked for NULL | |
| 2369 jvmtiError | |
| 2370 JvmtiEnv::GetClassVersionNumbers(oop k_mirror, jint* minor_version_ptr, jint* major_version_ptr) { | |
| 2371 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2372 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2373 } | |
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2374 Klass* k_oop = java_lang_Class::as_Klass(k_mirror); |
| 0 | 2375 Thread *thread = Thread::current(); |
| 2376 HandleMark hm(thread); | |
| 2377 KlassHandle klass(thread, k_oop); | |
| 2378 | |
| 2379 jint status = klass->jvmti_class_status(); | |
| 2380 if (status & (JVMTI_CLASS_STATUS_ERROR)) { | |
| 2381 return JVMTI_ERROR_INVALID_CLASS; | |
| 2382 } | |
| 2383 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { | |
| 2384 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2385 } | |
| 2386 | |
| 2387 instanceKlassHandle ik(thread, k_oop); | |
| 2388 *minor_version_ptr = ik->minor_version(); | |
| 2389 *major_version_ptr = ik->major_version(); | |
| 2390 | |
| 2391 return JVMTI_ERROR_NONE; | |
| 2392 } /* end GetClassVersionNumbers */ | |
| 2393 | |
| 2394 | |
| 2395 // k_mirror - may be primitive, this must be checked | |
| 2396 // constant_pool_count_ptr - pre-checked for NULL | |
| 2397 // constant_pool_byte_count_ptr - pre-checked for NULL | |
| 2398 // constant_pool_bytes_ptr - pre-checked for NULL | |
| 2399 jvmtiError | |
| 2400 JvmtiEnv::GetConstantPool(oop k_mirror, jint* constant_pool_count_ptr, jint* constant_pool_byte_count_ptr, unsigned char** constant_pool_bytes_ptr) { | |
| 2401 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2402 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2403 } | |
| 2404 | |
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2405 Klass* k_oop = java_lang_Class::as_Klass(k_mirror); |
| 0 | 2406 Thread *thread = Thread::current(); |
| 2407 HandleMark hm(thread); | |
| 2408 ResourceMark rm(thread); | |
| 2409 KlassHandle klass(thread, k_oop); | |
| 2410 | |
| 2411 jint status = klass->jvmti_class_status(); | |
| 2412 if (status & (JVMTI_CLASS_STATUS_ERROR)) { | |
| 2413 return JVMTI_ERROR_INVALID_CLASS; | |
| 2414 } | |
| 2415 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { | |
| 2416 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2417 } | |
| 2418 | |
| 2419 instanceKlassHandle ikh(thread, k_oop); | |
| 2420 constantPoolHandle constants(thread, ikh->constants()); | |
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2421 oop cplock = constants->lock(); |
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2422 ObjectLocker ol(cplock, thread, cplock != NULL); // lock constant pool while we query it |
| 0 | 2423 |
| 2424 JvmtiConstantPoolReconstituter reconstituter(ikh); | |
| 2425 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
| 2426 return reconstituter.get_error(); | |
| 2427 } | |
| 2428 | |
| 2429 unsigned char *cpool_bytes; | |
| 2430 int cpool_size = reconstituter.cpool_size(); | |
| 2431 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
| 2432 return reconstituter.get_error(); | |
| 2433 } | |
| 2434 jvmtiError res = allocate(cpool_size, &cpool_bytes); | |
| 2435 if (res != JVMTI_ERROR_NONE) { | |
| 2436 return res; | |
| 2437 } | |
| 2438 reconstituter.copy_cpool_bytes(cpool_bytes); | |
| 2439 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
| 2440 return reconstituter.get_error(); | |
| 2441 } | |
| 2442 | |
| 2443 *constant_pool_count_ptr = constants->length(); | |
| 2444 *constant_pool_byte_count_ptr = cpool_size; | |
| 2445 *constant_pool_bytes_ptr = cpool_bytes; | |
| 2446 | |
| 2447 return JVMTI_ERROR_NONE; | |
| 2448 } /* end GetConstantPool */ | |
| 2449 | |
| 2450 | |
| 2451 // k_mirror - may be primitive, this must be checked | |
| 2452 // is_interface_ptr - pre-checked for NULL | |
| 2453 jvmtiError | |
| 2454 JvmtiEnv::IsInterface(oop k_mirror, jboolean* is_interface_ptr) { | |
| 2455 { | |
| 2456 bool result = false; | |
| 2457 if (!java_lang_Class::is_primitive(k_mirror)) { | |
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2458 Klass* k = java_lang_Class::as_Klass(k_mirror); |
| 6983 | 2459 if (k != NULL && k->is_interface()) { |
| 0 | 2460 result = true; |
| 2461 } | |
| 2462 } | |
| 2463 *is_interface_ptr = result; | |
| 2464 } | |
| 2465 | |
| 2466 return JVMTI_ERROR_NONE; | |
| 2467 } /* end IsInterface */ | |
| 2468 | |
| 2469 | |
| 2470 // k_mirror - may be primitive, this must be checked | |
| 2471 // is_array_class_ptr - pre-checked for NULL | |
| 2472 jvmtiError | |
| 2473 JvmtiEnv::IsArrayClass(oop k_mirror, jboolean* is_array_class_ptr) { | |
| 2474 { | |
| 2475 bool result = false; | |
| 2476 if (!java_lang_Class::is_primitive(k_mirror)) { | |
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2477 Klass* k = java_lang_Class::as_Klass(k_mirror); |
| 6983 | 2478 if (k != NULL && k->oop_is_array()) { |
| 0 | 2479 result = true; |
| 2480 } | |
| 2481 } | |
| 2482 *is_array_class_ptr = result; | |
| 2483 } | |
| 2484 | |
| 2485 return JVMTI_ERROR_NONE; | |
| 2486 } /* end IsArrayClass */ | |
| 2487 | |
| 2488 | |
| 2489 // k_mirror - may be primitive, this must be checked | |
| 2490 // classloader_ptr - pre-checked for NULL | |
| 2491 jvmtiError | |
| 2492 JvmtiEnv::GetClassLoader(oop k_mirror, jobject* classloader_ptr) { | |
| 2493 { | |
| 2494 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2495 *classloader_ptr = (jclass) jni_reference(Handle()); | |
| 2496 return JVMTI_ERROR_NONE; | |
| 2497 } | |
| 2498 JavaThread* current_thread = JavaThread::current(); | |
| 2499 HandleMark hm(current_thread); | |
|
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2500 Klass* k = java_lang_Class::as_Klass(k_mirror); |
| 0 | 2501 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
| 2502 | |
| 6983 | 2503 oop result_oop = k->class_loader(); |
| 0 | 2504 if (result_oop == NULL) { |
| 2505 *classloader_ptr = (jclass) jni_reference(Handle()); | |
| 2506 return JVMTI_ERROR_NONE; | |
| 2507 } | |
| 2508 Handle result_handle = Handle(current_thread, result_oop); | |
| 2509 jclass result_jnihandle = (jclass) jni_reference(result_handle); | |
| 2510 *classloader_ptr = result_jnihandle; | |
| 2511 } | |
| 2512 return JVMTI_ERROR_NONE; | |
| 2513 } /* end GetClassLoader */ | |
| 2514 | |
| 2515 | |
| 2516 // k_mirror - may be primitive, this must be checked | |
| 2517 // source_debug_extension_ptr - pre-checked for NULL | |
| 2518 jvmtiError | |
| 2519 JvmtiEnv::GetSourceDebugExtension(oop k_mirror, char** source_debug_extension_ptr) { | |
| 2520 { | |
| 2521 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2522 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2523 } | |
|
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2524 Klass* k = java_lang_Class::as_Klass(k_mirror); |
| 0 | 2525 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
| 6983 | 2526 if (!k->oop_is_instance()) { |
| 0 | 2527 return JVMTI_ERROR_ABSENT_INFORMATION; |
| 2528 } | |
|
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2529 char* sde = InstanceKlass::cast(k)->source_debug_extension(); |
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2530 NULL_CHECK(sde, JVMTI_ERROR_ABSENT_INFORMATION); |
| 0 | 2531 |
| 2532 { | |
|
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2533 *source_debug_extension_ptr = (char *) jvmtiMalloc(strlen(sde)+1); |
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2534 strcpy(*source_debug_extension_ptr, sde); |
| 0 | 2535 } |
| 2536 } | |
| 2537 | |
| 2538 return JVMTI_ERROR_NONE; | |
| 2539 } /* end GetSourceDebugExtension */ | |
| 2540 | |
| 2541 // | |
| 2542 // Object functions | |
| 2543 // | |
| 2544 | |
| 2545 // hash_code_ptr - pre-checked for NULL | |
| 2546 jvmtiError | |
| 2547 JvmtiEnv::GetObjectHashCode(jobject object, jint* hash_code_ptr) { | |
| 2548 oop mirror = JNIHandles::resolve_external_guard(object); | |
| 2549 NULL_CHECK(mirror, JVMTI_ERROR_INVALID_OBJECT); | |
| 2550 NULL_CHECK(hash_code_ptr, JVMTI_ERROR_NULL_POINTER); | |
| 2551 | |
| 2552 { | |
| 2553 jint result = (jint) mirror->identity_hash(); | |
| 2554 *hash_code_ptr = result; | |
| 2555 } | |
| 2556 return JVMTI_ERROR_NONE; | |
| 2557 } /* end GetObjectHashCode */ | |
| 2558 | |
| 2559 | |
| 2560 // info_ptr - pre-checked for NULL | |
| 2561 jvmtiError | |
| 2562 JvmtiEnv::GetObjectMonitorUsage(jobject object, jvmtiMonitorUsage* info_ptr) { | |
| 2563 JavaThread* calling_thread = JavaThread::current(); | |
| 2564 jvmtiError err = get_object_monitor_usage(calling_thread, object, info_ptr); | |
| 2565 if (err == JVMTI_ERROR_THREAD_NOT_SUSPENDED) { | |
| 2566 // Some of the critical threads were not suspended. go to a safepoint and try again | |
| 2567 VM_GetObjectMonitorUsage op(this, calling_thread, object, info_ptr); | |
| 2568 VMThread::execute(&op); | |
| 2569 err = op.result(); | |
| 2570 } | |
| 2571 return err; | |
| 2572 } /* end GetObjectMonitorUsage */ | |
| 2573 | |
| 2574 | |
| 2575 // | |
| 2576 // Field functions | |
| 2577 // | |
| 2578 | |
| 2579 // name_ptr - NULL is a valid value, must be checked | |
| 2580 // signature_ptr - NULL is a valid value, must be checked | |
| 2581 // generic_ptr - NULL is a valid value, must be checked | |
| 2582 jvmtiError | |
| 2583 JvmtiEnv::GetFieldName(fieldDescriptor* fdesc_ptr, char** name_ptr, char** signature_ptr, char** generic_ptr) { | |
| 2584 JavaThread* current_thread = JavaThread::current(); | |
| 2585 ResourceMark rm(current_thread); | |
| 2586 if (name_ptr == NULL) { | |
| 2587 // just don't return the name | |
| 2588 } else { | |
| 2589 const char* fieldName = fdesc_ptr->name()->as_C_string(); | |
| 2590 *name_ptr = (char*) jvmtiMalloc(strlen(fieldName) + 1); | |
| 2591 if (*name_ptr == NULL) | |
| 2592 return JVMTI_ERROR_OUT_OF_MEMORY; | |
| 2593 strcpy(*name_ptr, fieldName); | |
| 2594 } | |
| 2595 if (signature_ptr== NULL) { | |
| 2596 // just don't return the signature | |
| 2597 } else { | |
| 2598 const char* fieldSignature = fdesc_ptr->signature()->as_C_string(); | |
| 2599 *signature_ptr = (char*) jvmtiMalloc(strlen(fieldSignature) + 1); | |
| 2600 if (*signature_ptr == NULL) | |
| 2601 return JVMTI_ERROR_OUT_OF_MEMORY; | |
| 2602 strcpy(*signature_ptr, fieldSignature); | |
| 2603 } | |
| 2604 if (generic_ptr != NULL) { | |
| 2605 *generic_ptr = NULL; | |
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2606 Symbol* soop = fdesc_ptr->generic_signature(); |
| 0 | 2607 if (soop != NULL) { |
| 2608 const char* gen_sig = soop->as_C_string(); | |
| 2609 if (gen_sig != NULL) { | |
| 2610 jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr); | |
| 2611 if (err != JVMTI_ERROR_NONE) { | |
| 2612 return err; | |
| 2613 } | |
| 2614 strcpy(*generic_ptr, gen_sig); | |
| 2615 } | |
| 2616 } | |
| 2617 } | |
| 2618 return JVMTI_ERROR_NONE; | |
| 2619 } /* end GetFieldName */ | |
| 2620 | |
| 2621 | |
| 2622 // declaring_class_ptr - pre-checked for NULL | |
| 2623 jvmtiError | |
| 2624 JvmtiEnv::GetFieldDeclaringClass(fieldDescriptor* fdesc_ptr, jclass* declaring_class_ptr) { | |
| 2625 | |
| 2626 *declaring_class_ptr = get_jni_class_non_null(fdesc_ptr->field_holder()); | |
| 2627 return JVMTI_ERROR_NONE; | |
| 2628 } /* end GetFieldDeclaringClass */ | |
| 2629 | |
| 2630 | |
| 2631 // modifiers_ptr - pre-checked for NULL | |
| 2632 jvmtiError | |
| 2633 JvmtiEnv::GetFieldModifiers(fieldDescriptor* fdesc_ptr, jint* modifiers_ptr) { | |
| 2634 | |
| 2635 AccessFlags resultFlags = fdesc_ptr->access_flags(); | |
| 2636 jint result = resultFlags.as_int(); | |
| 2637 *modifiers_ptr = result; | |
| 2638 | |
| 2639 return JVMTI_ERROR_NONE; | |
| 2640 } /* end GetFieldModifiers */ | |
| 2641 | |
| 2642 | |
| 2643 // is_synthetic_ptr - pre-checked for NULL | |
| 2644 jvmtiError | |
| 2645 JvmtiEnv::IsFieldSynthetic(fieldDescriptor* fdesc_ptr, jboolean* is_synthetic_ptr) { | |
| 2646 *is_synthetic_ptr = fdesc_ptr->is_synthetic(); | |
| 2647 return JVMTI_ERROR_NONE; | |
| 2648 } /* end IsFieldSynthetic */ | |
| 2649 | |
| 2650 | |
| 2651 // | |
| 2652 // Method functions | |
| 2653 // | |
| 2654 | |
| 2655 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2656 // name_ptr - NULL is a valid value, must be checked | |
| 2657 // signature_ptr - NULL is a valid value, must be checked | |
| 2658 // generic_ptr - NULL is a valid value, must be checked | |
| 2659 jvmtiError | |
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2660 JvmtiEnv::GetMethodName(Method* method_oop, char** name_ptr, char** signature_ptr, char** generic_ptr) { |
| 0 | 2661 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
| 2662 JavaThread* current_thread = JavaThread::current(); | |
| 2663 | |
| 2664 ResourceMark rm(current_thread); // get the utf8 name and signature | |
| 2665 if (name_ptr == NULL) { | |
| 2666 // just don't return the name | |
| 2667 } else { | |
| 2668 const char* utf8_name = (const char *) method_oop->name()->as_utf8(); | |
| 2669 *name_ptr = (char *) jvmtiMalloc(strlen(utf8_name)+1); | |
| 2670 strcpy(*name_ptr, utf8_name); | |
| 2671 } | |
| 2672 if (signature_ptr == NULL) { | |
| 2673 // just don't return the signature | |
| 2674 } else { | |
| 2675 const char* utf8_signature = (const char *) method_oop->signature()->as_utf8(); | |
| 2676 *signature_ptr = (char *) jvmtiMalloc(strlen(utf8_signature) + 1); | |
| 2677 strcpy(*signature_ptr, utf8_signature); | |
| 2678 } | |
| 2679 | |
| 2680 if (generic_ptr != NULL) { | |
| 2681 *generic_ptr = NULL; | |
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2682 Symbol* soop = method_oop->generic_signature(); |
| 0 | 2683 if (soop != NULL) { |
| 2684 const char* gen_sig = soop->as_C_string(); | |
| 2685 if (gen_sig != NULL) { | |
| 2686 jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr); | |
| 2687 if (err != JVMTI_ERROR_NONE) { | |
| 2688 return err; | |
| 2689 } | |
| 2690 strcpy(*generic_ptr, gen_sig); | |
| 2691 } | |
| 2692 } | |
| 2693 } | |
| 2694 return JVMTI_ERROR_NONE; | |
| 2695 } /* end GetMethodName */ | |
| 2696 | |
| 2697 | |
| 2698 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2699 // declaring_class_ptr - pre-checked for NULL | |
| 2700 jvmtiError | |
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2701 JvmtiEnv::GetMethodDeclaringClass(Method* method_oop, jclass* declaring_class_ptr) { |
| 0 | 2702 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
| 2703 (*declaring_class_ptr) = get_jni_class_non_null(method_oop->method_holder()); | |
| 2704 return JVMTI_ERROR_NONE; | |
| 2705 } /* end GetMethodDeclaringClass */ | |
| 2706 | |
| 2707 | |
| 2708 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2709 // modifiers_ptr - pre-checked for NULL | |
| 2710 jvmtiError | |
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2711 JvmtiEnv::GetMethodModifiers(Method* method_oop, jint* modifiers_ptr) { |
| 0 | 2712 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
| 2713 (*modifiers_ptr) = method_oop->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 2714 return JVMTI_ERROR_NONE; | |
| 2715 } /* end GetMethodModifiers */ | |
| 2716 | |
| 2717 | |
| 2718 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2719 // max_ptr - pre-checked for NULL | |
| 2720 jvmtiError | |
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2721 JvmtiEnv::GetMaxLocals(Method* method_oop, jint* max_ptr) { |
| 0 | 2722 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
| 2723 // get max stack | |
| 2724 (*max_ptr) = method_oop->max_locals(); | |
| 2725 return JVMTI_ERROR_NONE; | |
| 2726 } /* end GetMaxLocals */ | |
| 2727 | |
| 2728 | |
| 2729 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2730 // size_ptr - pre-checked for NULL | |
| 2731 jvmtiError | |
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2732 JvmtiEnv::GetArgumentsSize(Method* method_oop, jint* size_ptr) { |
| 0 | 2733 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
| 2734 // get size of arguments | |
| 2735 | |
| 2736 (*size_ptr) = method_oop->size_of_parameters(); | |
| 2737 return JVMTI_ERROR_NONE; | |
| 2738 } /* end GetArgumentsSize */ | |
| 2739 | |
| 2740 | |
| 2741 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2742 // entry_count_ptr - pre-checked for NULL | |
| 2743 // table_ptr - pre-checked for NULL | |
| 2744 jvmtiError | |
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2745 JvmtiEnv::GetLineNumberTable(Method* method_oop, jint* entry_count_ptr, jvmtiLineNumberEntry** table_ptr) { |
| 0 | 2746 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
| 2747 if (!method_oop->has_linenumber_table()) { | |
| 2748 return (JVMTI_ERROR_ABSENT_INFORMATION); | |
| 2749 } | |
| 2750 | |
| 2751 // The line number table is compressed so we don't know how big it is until decompressed. | |
| 2752 // Decompression is really fast so we just do it twice. | |
| 2753 | |
| 2754 // Compute size of table | |
| 2755 jint num_entries = 0; | |
| 2756 CompressedLineNumberReadStream stream(method_oop->compressed_linenumber_table()); | |
| 2757 while (stream.read_pair()) { | |
| 2758 num_entries++; | |
| 2759 } | |
| 2760 jvmtiLineNumberEntry *jvmti_table = | |
| 2761 (jvmtiLineNumberEntry *)jvmtiMalloc(num_entries * (sizeof(jvmtiLineNumberEntry))); | |
| 2762 | |
| 2763 // Fill jvmti table | |
| 2764 if (num_entries > 0) { | |
| 2765 int index = 0; | |
| 2766 CompressedLineNumberReadStream stream(method_oop->compressed_linenumber_table()); | |
| 2767 while (stream.read_pair()) { | |
| 2768 jvmti_table[index].start_location = (jlocation) stream.bci(); | |
| 2769 jvmti_table[index].line_number = (jint) stream.line(); | |
| 2770 index++; | |
| 2771 } | |
| 2772 assert(index == num_entries, "sanity check"); | |
| 2773 } | |
| 2774 | |
| 2775 // Set up results | |
| 2776 (*entry_count_ptr) = num_entries; | |
| 2777 (*table_ptr) = jvmti_table; | |
| 2778 | |
| 2779 return JVMTI_ERROR_NONE; | |
| 2780 } /* end GetLineNumberTable */ | |
| 2781 | |
| 2782 | |
| 2783 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2784 // start_location_ptr - pre-checked for NULL | |
| 2785 // end_location_ptr - pre-checked for NULL | |
| 2786 jvmtiError | |
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2787 JvmtiEnv::GetMethodLocation(Method* method_oop, jlocation* start_location_ptr, jlocation* end_location_ptr) { |
| 0 | 2788 |
| 2789 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2790 // get start and end location | |
| 2791 (*end_location_ptr) = (jlocation) (method_oop->code_size() - 1); | |
| 2792 if (method_oop->code_size() == 0) { | |
| 2793 // there is no code so there is no start location | |
| 2794 (*start_location_ptr) = (jlocation)(-1); | |
| 2795 } else { | |
| 2796 (*start_location_ptr) = (jlocation)(0); | |
| 2797 } | |
| 2798 | |
| 2799 return JVMTI_ERROR_NONE; | |
| 2800 } /* end GetMethodLocation */ | |
| 2801 | |
| 2802 | |
| 2803 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2804 // entry_count_ptr - pre-checked for NULL | |
| 2805 // table_ptr - pre-checked for NULL | |
| 2806 jvmtiError | |
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2807 JvmtiEnv::GetLocalVariableTable(Method* method_oop, jint* entry_count_ptr, jvmtiLocalVariableEntry** table_ptr) { |
| 0 | 2808 |
| 2809 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2810 JavaThread* current_thread = JavaThread::current(); | |
| 2811 | |
| 2812 // does the klass have any local variable information? | |
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2813 InstanceKlass* ik = method_oop->method_holder(); |
| 0 | 2814 if (!ik->access_flags().has_localvariable_table()) { |
| 2815 return (JVMTI_ERROR_ABSENT_INFORMATION); | |
| 2816 } | |
| 2817 | |
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2818 ConstantPool* constants = method_oop->constants(); |
| 0 | 2819 NULL_CHECK(constants, JVMTI_ERROR_ABSENT_INFORMATION); |
| 2820 | |
| 2821 // in the vm localvariable table representation, 6 consecutive elements in the table | |
| 2822 // represent a 6-tuple of shorts | |
| 2823 // [start_pc, length, name_index, descriptor_index, signature_index, index] | |
| 2824 jint num_entries = method_oop->localvariable_table_length(); | |
| 2825 jvmtiLocalVariableEntry *jvmti_table = (jvmtiLocalVariableEntry *) | |
| 2826 jvmtiMalloc(num_entries * (sizeof(jvmtiLocalVariableEntry))); | |
| 2827 | |
| 2828 if (num_entries > 0) { | |
| 2829 LocalVariableTableElement* table = method_oop->localvariable_table_start(); | |
| 2830 for (int i = 0; i < num_entries; i++) { | |
| 2831 // get the 5 tuple information from the vm table | |
| 2832 jlocation start_location = (jlocation) table[i].start_bci; | |
| 2833 jint length = (jint) table[i].length; | |
| 2834 int name_index = (int) table[i].name_cp_index; | |
| 2835 int signature_index = (int) table[i].descriptor_cp_index; | |
| 2836 int generic_signature_index = (int) table[i].signature_cp_index; | |
| 2837 jint slot = (jint) table[i].slot; | |
| 2838 | |
| 2839 // get utf8 name and signature | |
| 2840 char *name_buf = NULL; | |
| 2841 char *sig_buf = NULL; | |
| 2842 char *gen_sig_buf = NULL; | |
| 2843 { | |
| 2844 ResourceMark rm(current_thread); | |
| 2845 | |
| 2846 const char *utf8_name = (const char *) constants->symbol_at(name_index)->as_utf8(); | |
| 2847 name_buf = (char *) jvmtiMalloc(strlen(utf8_name)+1); | |
| 2848 strcpy(name_buf, utf8_name); | |
| 2849 | |
| 2850 const char *utf8_signature = (const char *) constants->symbol_at(signature_index)->as_utf8(); | |
| 2851 sig_buf = (char *) jvmtiMalloc(strlen(utf8_signature)+1); | |
| 2852 strcpy(sig_buf, utf8_signature); | |
| 2853 | |
| 2854 if (generic_signature_index > 0) { | |
| 2855 const char *utf8_gen_sign = (const char *) | |
| 2856 constants->symbol_at(generic_signature_index)->as_utf8(); | |
| 2857 gen_sig_buf = (char *) jvmtiMalloc(strlen(utf8_gen_sign)+1); | |
| 2858 strcpy(gen_sig_buf, utf8_gen_sign); | |
| 2859 } | |
| 2860 } | |
| 2861 | |
| 2862 // fill in the jvmti local variable table | |
| 2863 jvmti_table[i].start_location = start_location; | |
| 2864 jvmti_table[i].length = length; | |
| 2865 jvmti_table[i].name = name_buf; | |
| 2866 jvmti_table[i].signature = sig_buf; | |
| 2867 jvmti_table[i].generic_signature = gen_sig_buf; | |
| 2868 jvmti_table[i].slot = slot; | |
| 2869 } | |
| 2870 } | |
| 2871 | |
| 2872 // set results | |
| 2873 (*entry_count_ptr) = num_entries; | |
| 2874 (*table_ptr) = jvmti_table; | |
| 2875 | |
| 2876 return JVMTI_ERROR_NONE; | |
| 2877 } /* end GetLocalVariableTable */ | |
| 2878 | |
| 2879 | |
| 2880 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2881 // bytecode_count_ptr - pre-checked for NULL | |
| 2882 // bytecodes_ptr - pre-checked for NULL | |
| 2883 jvmtiError | |
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2884 JvmtiEnv::GetBytecodes(Method* method_oop, jint* bytecode_count_ptr, unsigned char** bytecodes_ptr) { |
| 0 | 2885 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
| 2886 | |
| 2887 HandleMark hm; | |
| 2888 methodHandle method(method_oop); | |
| 2889 jint size = (jint)method->code_size(); | |
| 2890 jvmtiError err = allocate(size, bytecodes_ptr); | |
| 2891 if (err != JVMTI_ERROR_NONE) { | |
| 2892 return err; | |
| 2893 } | |
| 2894 | |
| 2895 (*bytecode_count_ptr) = size; | |
| 2896 // get byte codes | |
| 2897 JvmtiClassFileReconstituter::copy_bytecodes(method, *bytecodes_ptr); | |
| 2898 | |
| 2899 return JVMTI_ERROR_NONE; | |
| 2900 } /* end GetBytecodes */ | |
| 2901 | |
| 2902 | |
| 2903 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2904 // is_native_ptr - pre-checked for NULL | |
| 2905 jvmtiError | |
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2906 JvmtiEnv::IsMethodNative(Method* method_oop, jboolean* is_native_ptr) { |
| 0 | 2907 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
| 2908 (*is_native_ptr) = method_oop->is_native(); | |
| 2909 return JVMTI_ERROR_NONE; | |
| 2910 } /* end IsMethodNative */ | |
| 2911 | |
| 2912 | |
| 2913 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2914 // is_synthetic_ptr - pre-checked for NULL | |
| 2915 jvmtiError | |
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2916 JvmtiEnv::IsMethodSynthetic(Method* method_oop, jboolean* is_synthetic_ptr) { |
| 0 | 2917 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
| 2918 (*is_synthetic_ptr) = method_oop->is_synthetic(); | |
| 2919 return JVMTI_ERROR_NONE; | |
| 2920 } /* end IsMethodSynthetic */ | |
| 2921 | |
| 2922 | |
| 2923 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2924 // is_obsolete_ptr - pre-checked for NULL | |
| 2925 jvmtiError | |
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2926 JvmtiEnv::IsMethodObsolete(Method* method_oop, jboolean* is_obsolete_ptr) { |
| 1121 | 2927 if (use_version_1_0_semantics() && |
| 2928 get_capabilities()->can_redefine_classes == 0) { | |
| 2929 // This JvmtiEnv requested version 1.0 semantics and this function | |
| 2930 // requires the can_redefine_classes capability in version 1.0 so | |
| 2931 // we need to return an error here. | |
| 2932 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; | |
| 2933 } | |
| 2934 | |
| 0 | 2935 if (method_oop == NULL || method_oop->is_obsolete()) { |
| 2936 *is_obsolete_ptr = true; | |
| 2937 } else { | |
| 2938 *is_obsolete_ptr = false; | |
| 2939 } | |
| 2940 return JVMTI_ERROR_NONE; | |
| 2941 } /* end IsMethodObsolete */ | |
| 2942 | |
| 2943 // | |
| 2944 // Raw Monitor functions | |
| 2945 // | |
| 2946 | |
| 2947 // name - pre-checked for NULL | |
| 2948 // monitor_ptr - pre-checked for NULL | |
| 2949 jvmtiError | |
| 2950 JvmtiEnv::CreateRawMonitor(const char* name, jrawMonitorID* monitor_ptr) { | |
| 2951 JvmtiRawMonitor* rmonitor = new JvmtiRawMonitor(name); | |
| 2952 NULL_CHECK(rmonitor, JVMTI_ERROR_OUT_OF_MEMORY); | |
| 2953 | |
| 2954 *monitor_ptr = (jrawMonitorID)rmonitor; | |
| 2955 | |
| 2956 return JVMTI_ERROR_NONE; | |
| 2957 } /* end CreateRawMonitor */ | |
| 2958 | |
| 2959 | |
| 2960 // rmonitor - pre-checked for validity | |
| 2961 jvmtiError | |
| 2962 JvmtiEnv::DestroyRawMonitor(JvmtiRawMonitor * rmonitor) { | |
| 2963 if (Threads::number_of_threads() == 0) { | |
| 2964 // Remove this monitor from pending raw monitors list | |
| 2965 // if it has entered in onload or start phase. | |
| 2966 JvmtiPendingMonitors::destroy(rmonitor); | |
| 2967 } else { | |
| 2968 Thread* thread = Thread::current(); | |
| 2969 if (rmonitor->is_entered(thread)) { | |
| 2970 // The caller owns this monitor which we are about to destroy. | |
| 2971 // We exit the underlying synchronization object so that the | |
| 2972 // "delete monitor" call below can work without an assertion | |
| 2973 // failure on systems that don't like destroying synchronization | |
| 2974 // objects that are locked. | |
| 2975 int r; | |
| 2976 intptr_t recursion = rmonitor->recursions(); | |
| 2977 for (intptr_t i=0; i <= recursion; i++) { | |
| 2978 r = rmonitor->raw_exit(thread); | |
| 2979 assert(r == ObjectMonitor::OM_OK, "raw_exit should have worked"); | |
| 2980 if (r != ObjectMonitor::OM_OK) { // robustness | |
| 2981 return JVMTI_ERROR_INTERNAL; | |
| 2982 } | |
| 2983 } | |
| 2984 } | |
| 2985 if (rmonitor->owner() != NULL) { | |
| 2986 // The caller is trying to destroy a monitor that is locked by | |
| 2987 // someone else. While this is not forbidden by the JVMTI | |
| 2988 // spec, it will cause an assertion failure on systems that don't | |
| 2989 // like destroying synchronization objects that are locked. | |
| 2990 // We indicate a problem with the error return (and leak the | |
| 2991 // monitor's memory). | |
| 2992 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
| 2993 } | |
| 2994 } | |
| 2995 | |
| 2996 delete rmonitor; | |
| 2997 | |
| 2998 return JVMTI_ERROR_NONE; | |
| 2999 } /* end DestroyRawMonitor */ | |
| 3000 | |
| 3001 | |
| 3002 // rmonitor - pre-checked for validity | |
| 3003 jvmtiError | |
| 3004 JvmtiEnv::RawMonitorEnter(JvmtiRawMonitor * rmonitor) { | |
| 3005 if (Threads::number_of_threads() == 0) { | |
| 3006 // No JavaThreads exist so ObjectMonitor enter cannot be | |
| 3007 // used, add this raw monitor to the pending list. | |
| 3008 // The pending monitors will be actually entered when | |
| 3009 // the VM is setup. | |
| 3010 // See transition_pending_raw_monitors in create_vm() | |
| 3011 // in thread.cpp. | |
| 3012 JvmtiPendingMonitors::enter(rmonitor); | |
| 3013 } else { | |
| 3014 int r; | |
| 3015 Thread* thread = Thread::current(); | |
| 3016 | |
| 3017 if (thread->is_Java_thread()) { | |
| 3018 JavaThread* current_thread = (JavaThread*)thread; | |
| 3019 | |
| 3020 #ifdef PROPER_TRANSITIONS | |
| 3021 // Not really unknown but ThreadInVMfromNative does more than we want | |
| 3022 ThreadInVMfromUnknown __tiv; | |
| 3023 { | |
| 3024 ThreadBlockInVM __tbivm(current_thread); | |
| 3025 r = rmonitor->raw_enter(current_thread); | |
| 3026 } | |
| 3027 #else | |
| 3028 /* Transition to thread_blocked without entering vm state */ | |
| 3029 /* This is really evil. Normally you can't undo _thread_blocked */ | |
| 3030 /* transitions like this because it would cause us to miss a */ | |
| 3031 /* safepoint but since the thread was already in _thread_in_native */ | |
| 3032 /* the thread is not leaving a safepoint safe state and it will */ | |
| 3033 /* block when it tries to return from native. We can't safepoint */ | |
| 3034 /* block in here because we could deadlock the vmthread. Blech. */ | |
| 3035 | |
| 3036 JavaThreadState state = current_thread->thread_state(); | |
| 3037 assert(state == _thread_in_native, "Must be _thread_in_native"); | |
| 3038 // frame should already be walkable since we are in native | |
| 3039 assert(!current_thread->has_last_Java_frame() || | |
| 3040 current_thread->frame_anchor()->walkable(), "Must be walkable"); | |
| 3041 current_thread->set_thread_state(_thread_blocked); | |
| 3042 | |
| 3043 r = rmonitor->raw_enter(current_thread); | |
| 3044 // restore state, still at a safepoint safe state | |
| 3045 current_thread->set_thread_state(state); | |
| 3046 | |
| 3047 #endif /* PROPER_TRANSITIONS */ | |
| 3048 assert(r == ObjectMonitor::OM_OK, "raw_enter should have worked"); | |
| 3049 } else { | |
| 3050 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
| 3051 r = rmonitor->raw_enter(thread); | |
| 3052 } else { | |
| 3053 ShouldNotReachHere(); | |
| 3054 } | |
| 3055 } | |
| 3056 | |
| 3057 if (r != ObjectMonitor::OM_OK) { // robustness | |
| 3058 return JVMTI_ERROR_INTERNAL; | |
| 3059 } | |
| 3060 } | |
| 3061 return JVMTI_ERROR_NONE; | |
| 3062 } /* end RawMonitorEnter */ | |
| 3063 | |
| 3064 | |
| 3065 // rmonitor - pre-checked for validity | |
| 3066 jvmtiError | |
| 3067 JvmtiEnv::RawMonitorExit(JvmtiRawMonitor * rmonitor) { | |
| 3068 jvmtiError err = JVMTI_ERROR_NONE; | |
| 3069 | |
| 3070 if (Threads::number_of_threads() == 0) { | |
| 3071 // No JavaThreads exist so just remove this monitor from the pending list. | |
| 3072 // Bool value from exit is false if rmonitor is not in the list. | |
| 3073 if (!JvmtiPendingMonitors::exit(rmonitor)) { | |
| 3074 err = JVMTI_ERROR_NOT_MONITOR_OWNER; | |
| 3075 } | |
| 3076 } else { | |
| 3077 int r; | |
| 3078 Thread* thread = Thread::current(); | |
| 3079 | |
| 3080 if (thread->is_Java_thread()) { | |
| 3081 JavaThread* current_thread = (JavaThread*)thread; | |
| 3082 #ifdef PROPER_TRANSITIONS | |
| 3083 // Not really unknown but ThreadInVMfromNative does more than we want | |
| 3084 ThreadInVMfromUnknown __tiv; | |
| 3085 #endif /* PROPER_TRANSITIONS */ | |
| 3086 r = rmonitor->raw_exit(current_thread); | |
| 3087 } else { | |
| 3088 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
| 3089 r = rmonitor->raw_exit(thread); | |
| 3090 } else { | |
| 3091 ShouldNotReachHere(); | |
| 3092 } | |
| 3093 } | |
| 3094 | |
| 3095 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
| 3096 err = JVMTI_ERROR_NOT_MONITOR_OWNER; | |
| 3097 } else { | |
| 3098 assert(r == ObjectMonitor::OM_OK, "raw_exit should have worked"); | |
| 3099 if (r != ObjectMonitor::OM_OK) { // robustness | |
| 3100 err = JVMTI_ERROR_INTERNAL; | |
| 3101 } | |
| 3102 } | |
| 3103 } | |
| 3104 return err; | |
| 3105 } /* end RawMonitorExit */ | |
| 3106 | |
| 3107 | |
| 3108 // rmonitor - pre-checked for validity | |
| 3109 jvmtiError | |
| 3110 JvmtiEnv::RawMonitorWait(JvmtiRawMonitor * rmonitor, jlong millis) { | |
| 3111 int r; | |
| 3112 Thread* thread = Thread::current(); | |
| 3113 | |
| 3114 if (thread->is_Java_thread()) { | |
| 3115 JavaThread* current_thread = (JavaThread*)thread; | |
| 3116 #ifdef PROPER_TRANSITIONS | |
| 3117 // Not really unknown but ThreadInVMfromNative does more than we want | |
| 3118 ThreadInVMfromUnknown __tiv; | |
| 3119 { | |
| 3120 ThreadBlockInVM __tbivm(current_thread); | |
| 3121 r = rmonitor->raw_wait(millis, true, current_thread); | |
| 3122 } | |
| 3123 #else | |
| 3124 /* Transition to thread_blocked without entering vm state */ | |
| 3125 /* This is really evil. Normally you can't undo _thread_blocked */ | |
| 3126 /* transitions like this because it would cause us to miss a */ | |
| 3127 /* safepoint but since the thread was already in _thread_in_native */ | |
| 3128 /* the thread is not leaving a safepoint safe state and it will */ | |
| 3129 /* block when it tries to return from native. We can't safepoint */ | |
| 3130 /* block in here because we could deadlock the vmthread. Blech. */ | |
| 3131 | |
| 3132 JavaThreadState state = current_thread->thread_state(); | |
| 3133 assert(state == _thread_in_native, "Must be _thread_in_native"); | |
| 3134 // frame should already be walkable since we are in native | |
| 3135 assert(!current_thread->has_last_Java_frame() || | |
| 3136 current_thread->frame_anchor()->walkable(), "Must be walkable"); | |
| 3137 current_thread->set_thread_state(_thread_blocked); | |
| 3138 | |
| 3139 r = rmonitor->raw_wait(millis, true, current_thread); | |
| 3140 // restore state, still at a safepoint safe state | |
| 3141 current_thread->set_thread_state(state); | |
| 3142 | |
| 3143 #endif /* PROPER_TRANSITIONS */ | |
| 3144 } else { | |
| 3145 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
| 3146 r = rmonitor->raw_wait(millis, true, thread); | |
| 3147 } else { | |
| 3148 ShouldNotReachHere(); | |
| 3149 } | |
| 3150 } | |
| 3151 | |
| 3152 switch (r) { | |
| 3153 case ObjectMonitor::OM_INTERRUPTED: | |
| 3154 return JVMTI_ERROR_INTERRUPT; | |
| 3155 case ObjectMonitor::OM_ILLEGAL_MONITOR_STATE: | |
| 3156 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
| 3157 } | |
| 3158 assert(r == ObjectMonitor::OM_OK, "raw_wait should have worked"); | |
| 3159 if (r != ObjectMonitor::OM_OK) { // robustness | |
| 3160 return JVMTI_ERROR_INTERNAL; | |
| 3161 } | |
| 3162 | |
| 3163 return JVMTI_ERROR_NONE; | |
| 3164 } /* end RawMonitorWait */ | |
| 3165 | |
| 3166 | |
| 3167 // rmonitor - pre-checked for validity | |
| 3168 jvmtiError | |
| 3169 JvmtiEnv::RawMonitorNotify(JvmtiRawMonitor * rmonitor) { | |
| 3170 int r; | |
| 3171 Thread* thread = Thread::current(); | |
| 3172 | |
| 3173 if (thread->is_Java_thread()) { | |
| 3174 JavaThread* current_thread = (JavaThread*)thread; | |
| 3175 // Not really unknown but ThreadInVMfromNative does more than we want | |
| 3176 ThreadInVMfromUnknown __tiv; | |
| 3177 r = rmonitor->raw_notify(current_thread); | |
| 3178 } else { | |
| 3179 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
| 3180 r = rmonitor->raw_notify(thread); | |
| 3181 } else { | |
| 3182 ShouldNotReachHere(); | |
| 3183 } | |
| 3184 } | |
| 3185 | |
| 3186 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
| 3187 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
| 3188 } | |
| 3189 assert(r == ObjectMonitor::OM_OK, "raw_notify should have worked"); | |
| 3190 if (r != ObjectMonitor::OM_OK) { // robustness | |
| 3191 return JVMTI_ERROR_INTERNAL; | |
| 3192 } | |
| 3193 | |
| 3194 return JVMTI_ERROR_NONE; | |
| 3195 } /* end RawMonitorNotify */ | |
| 3196 | |
| 3197 | |
| 3198 // rmonitor - pre-checked for validity | |
| 3199 jvmtiError | |
| 3200 JvmtiEnv::RawMonitorNotifyAll(JvmtiRawMonitor * rmonitor) { | |
| 3201 int r; | |
| 3202 Thread* thread = Thread::current(); | |
| 3203 | |
| 3204 if (thread->is_Java_thread()) { | |
| 3205 JavaThread* current_thread = (JavaThread*)thread; | |
| 3206 ThreadInVMfromUnknown __tiv; | |
| 3207 r = rmonitor->raw_notifyAll(current_thread); | |
| 3208 } else { | |
| 3209 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
| 3210 r = rmonitor->raw_notifyAll(thread); | |
| 3211 } else { | |
| 3212 ShouldNotReachHere(); | |
| 3213 } | |
| 3214 } | |
| 3215 | |
| 3216 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
| 3217 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
| 3218 } | |
| 3219 assert(r == ObjectMonitor::OM_OK, "raw_notifyAll should have worked"); | |
| 3220 if (r != ObjectMonitor::OM_OK) { // robustness | |
| 3221 return JVMTI_ERROR_INTERNAL; | |
| 3222 } | |
| 3223 | |
| 3224 return JVMTI_ERROR_NONE; | |
| 3225 } /* end RawMonitorNotifyAll */ | |
| 3226 | |
| 3227 | |
| 3228 // | |
| 3229 // JNI Function Interception functions | |
| 3230 // | |
| 3231 | |
| 3232 | |
| 3233 // function_table - pre-checked for NULL | |
| 3234 jvmtiError | |
| 3235 JvmtiEnv::SetJNIFunctionTable(const jniNativeInterface* function_table) { | |
| 3236 // Copy jni function table at safepoint. | |
| 3237 VM_JNIFunctionTableCopier copier(function_table); | |
| 3238 VMThread::execute(&copier); | |
| 3239 | |
| 3240 return JVMTI_ERROR_NONE; | |
| 3241 } /* end SetJNIFunctionTable */ | |
| 3242 | |
| 3243 | |
| 3244 // function_table - pre-checked for NULL | |
| 3245 jvmtiError | |
| 3246 JvmtiEnv::GetJNIFunctionTable(jniNativeInterface** function_table) { | |
| 3247 *function_table=(jniNativeInterface*)jvmtiMalloc(sizeof(jniNativeInterface)); | |
| 3248 if (*function_table == NULL) | |
| 3249 return JVMTI_ERROR_OUT_OF_MEMORY; | |
| 3250 memcpy(*function_table,(JavaThread::current())->get_jni_functions(),sizeof(jniNativeInterface)); | |
| 3251 return JVMTI_ERROR_NONE; | |
| 3252 } /* end GetJNIFunctionTable */ | |
| 3253 | |
| 3254 | |
| 3255 // | |
| 3256 // Event Management functions | |
| 3257 // | |
| 3258 | |
| 3259 jvmtiError | |
| 3260 JvmtiEnv::GenerateEvents(jvmtiEvent event_type) { | |
| 3261 // can only generate two event types | |
| 3262 if (event_type != JVMTI_EVENT_COMPILED_METHOD_LOAD && | |
| 3263 event_type != JVMTI_EVENT_DYNAMIC_CODE_GENERATED) { | |
| 3264 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
| 3265 } | |
| 3266 | |
| 3267 // for compiled_method_load events we must check that the environment | |
| 3268 // has the can_generate_compiled_method_load_events capability. | |
| 3269 if (event_type == JVMTI_EVENT_COMPILED_METHOD_LOAD) { | |
| 3270 if (get_capabilities()->can_generate_compiled_method_load_events == 0) { | |
| 3271 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; | |
| 3272 } | |
| 3273 return JvmtiCodeBlobEvents::generate_compiled_method_load_events(this); | |
| 3274 } else { | |
| 3275 return JvmtiCodeBlobEvents::generate_dynamic_code_events(this); | |
| 3276 } | |
| 3277 | |
| 3278 } /* end GenerateEvents */ | |
| 3279 | |
| 3280 | |
| 3281 // | |
| 3282 // Extension Mechanism functions | |
| 3283 // | |
| 3284 | |
| 3285 // extension_count_ptr - pre-checked for NULL | |
| 3286 // extensions - pre-checked for NULL | |
| 3287 jvmtiError | |
| 3288 JvmtiEnv::GetExtensionFunctions(jint* extension_count_ptr, jvmtiExtensionFunctionInfo** extensions) { | |
| 3289 return JvmtiExtensions::get_functions(this, extension_count_ptr, extensions); | |
| 3290 } /* end GetExtensionFunctions */ | |
| 3291 | |
| 3292 | |
| 3293 // extension_count_ptr - pre-checked for NULL | |
| 3294 // extensions - pre-checked for NULL | |
| 3295 jvmtiError | |
| 3296 JvmtiEnv::GetExtensionEvents(jint* extension_count_ptr, jvmtiExtensionEventInfo** extensions) { | |
| 3297 return JvmtiExtensions::get_events(this, extension_count_ptr, extensions); | |
| 3298 } /* end GetExtensionEvents */ | |
| 3299 | |
| 3300 | |
| 3301 // callback - NULL is a valid value, must be checked | |
| 3302 jvmtiError | |
| 3303 JvmtiEnv::SetExtensionEventCallback(jint extension_event_index, jvmtiExtensionEvent callback) { | |
| 3304 return JvmtiExtensions::set_event_callback(this, extension_event_index, callback); | |
| 3305 } /* end SetExtensionEventCallback */ | |
| 3306 | |
| 3307 // | |
| 3308 // Timers functions | |
| 3309 // | |
| 3310 | |
| 3311 // info_ptr - pre-checked for NULL | |
| 3312 jvmtiError | |
| 3313 JvmtiEnv::GetCurrentThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) { | |
| 3314 os::current_thread_cpu_time_info(info_ptr); | |
| 3315 return JVMTI_ERROR_NONE; | |
| 3316 } /* end GetCurrentThreadCpuTimerInfo */ | |
| 3317 | |
| 3318 | |
| 3319 // nanos_ptr - pre-checked for NULL | |
| 3320 jvmtiError | |
| 3321 JvmtiEnv::GetCurrentThreadCpuTime(jlong* nanos_ptr) { | |
| 3322 *nanos_ptr = os::current_thread_cpu_time(); | |
| 3323 return JVMTI_ERROR_NONE; | |
| 3324 } /* end GetCurrentThreadCpuTime */ | |
| 3325 | |
| 3326 | |
| 3327 // info_ptr - pre-checked for NULL | |
| 3328 jvmtiError | |
| 3329 JvmtiEnv::GetThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) { | |
| 3330 os::thread_cpu_time_info(info_ptr); | |
| 3331 return JVMTI_ERROR_NONE; | |
| 3332 } /* end GetThreadCpuTimerInfo */ | |
| 3333 | |
| 3334 | |
| 3335 // Threads_lock NOT held, java_thread not protected by lock | |
| 3336 // java_thread - pre-checked | |
| 3337 // nanos_ptr - pre-checked for NULL | |
| 3338 jvmtiError | |
| 3339 JvmtiEnv::GetThreadCpuTime(JavaThread* java_thread, jlong* nanos_ptr) { | |
| 3340 *nanos_ptr = os::thread_cpu_time(java_thread); | |
| 3341 return JVMTI_ERROR_NONE; | |
| 3342 } /* end GetThreadCpuTime */ | |
| 3343 | |
| 3344 | |
| 3345 // info_ptr - pre-checked for NULL | |
| 3346 jvmtiError | |
| 3347 JvmtiEnv::GetTimerInfo(jvmtiTimerInfo* info_ptr) { | |
| 3348 os::javaTimeNanos_info(info_ptr); | |
| 3349 return JVMTI_ERROR_NONE; | |
| 3350 } /* end GetTimerInfo */ | |
| 3351 | |
| 3352 | |
| 3353 // nanos_ptr - pre-checked for NULL | |
| 3354 jvmtiError | |
| 3355 JvmtiEnv::GetTime(jlong* nanos_ptr) { | |
| 3356 *nanos_ptr = os::javaTimeNanos(); | |
| 3357 return JVMTI_ERROR_NONE; | |
| 3358 } /* end GetTime */ | |
| 3359 | |
| 3360 | |
| 3361 // processor_count_ptr - pre-checked for NULL | |
| 3362 jvmtiError | |
| 3363 JvmtiEnv::GetAvailableProcessors(jint* processor_count_ptr) { | |
| 3364 *processor_count_ptr = os::active_processor_count(); | |
| 3365 return JVMTI_ERROR_NONE; | |
| 3366 } /* end GetAvailableProcessors */ | |
| 3367 | |
| 3368 // | |
| 3369 // System Properties functions | |
| 3370 // | |
| 3371 | |
| 3372 // count_ptr - pre-checked for NULL | |
| 3373 // property_ptr - pre-checked for NULL | |
| 3374 jvmtiError | |
| 3375 JvmtiEnv::GetSystemProperties(jint* count_ptr, char*** property_ptr) { | |
| 3376 jvmtiError err = JVMTI_ERROR_NONE; | |
| 3377 | |
| 3378 *count_ptr = Arguments::PropertyList_count(Arguments::system_properties()); | |
| 3379 | |
| 3380 err = allocate(*count_ptr * sizeof(char *), (unsigned char **)property_ptr); | |
| 3381 if (err != JVMTI_ERROR_NONE) { | |
| 3382 return err; | |
| 3383 } | |
| 3384 int i = 0 ; | |
| 3385 for (SystemProperty* p = Arguments::system_properties(); p != NULL && i < *count_ptr; p = p->next(), i++) { | |
| 3386 const char *key = p->key(); | |
| 3387 char **tmp_value = *property_ptr+i; | |
| 3388 err = allocate((strlen(key)+1) * sizeof(char), (unsigned char**)tmp_value); | |
| 3389 if (err == JVMTI_ERROR_NONE) { | |
| 3390 strcpy(*tmp_value, key); | |
| 3391 } else { | |
| 3392 // clean up previously allocated memory. | |
| 3393 for (int j=0; j<i; j++) { | |
| 3394 Deallocate((unsigned char*)*property_ptr+j); | |
| 3395 } | |
| 3396 Deallocate((unsigned char*)property_ptr); | |
| 3397 break; | |
| 3398 } | |
| 3399 } | |
| 3400 return err; | |
| 3401 } /* end GetSystemProperties */ | |
| 3402 | |
| 3403 | |
| 3404 // property - pre-checked for NULL | |
| 3405 // value_ptr - pre-checked for NULL | |
| 3406 jvmtiError | |
| 3407 JvmtiEnv::GetSystemProperty(const char* property, char** value_ptr) { | |
| 3408 jvmtiError err = JVMTI_ERROR_NONE; | |
| 3409 const char *value; | |
| 3410 | |
| 3411 value = Arguments::PropertyList_get_value(Arguments::system_properties(), property); | |
| 3412 if (value == NULL) { | |
| 3413 err = JVMTI_ERROR_NOT_AVAILABLE; | |
| 3414 } else { | |
| 3415 err = allocate((strlen(value)+1) * sizeof(char), (unsigned char **)value_ptr); | |
| 3416 if (err == JVMTI_ERROR_NONE) { | |
| 3417 strcpy(*value_ptr, value); | |
| 3418 } | |
| 3419 } | |
| 3420 return err; | |
| 3421 } /* end GetSystemProperty */ | |
| 3422 | |
| 3423 | |
| 3424 // property - pre-checked for NULL | |
| 3425 // value - NULL is a valid value, must be checked | |
| 3426 jvmtiError | |
|
2100
b1a2afa37ec4
7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents:
2019
diff
changeset
|
3427 JvmtiEnv::SetSystemProperty(const char* property, const char* value_ptr) { |
| 0 | 3428 jvmtiError err =JVMTI_ERROR_NOT_AVAILABLE; |
| 3429 | |
| 3430 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
| 3431 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
|
3432 if (p->set_value((char *)value_ptr)) { |
| 0 | 3433 err = JVMTI_ERROR_NONE; |
| 3434 } | |
| 3435 } | |
| 3436 } | |
| 3437 return err; | |
| 3438 } /* end SetSystemProperty */ |