Mercurial > hg > truffle
annotate src/share/vm/prims/jvmtiEnv.cpp @ 3960:f08d439fab8c
7089790: integrate bsd-port changes
Reviewed-by: kvn, twisti, jrose
Contributed-by: Kurt Miller <kurt@intricatesoftware.com>, Greg Lewis <glewis@eyesbeyond.com>, Jung-uk Kim <jkim@freebsd.org>, Christos Zoulas <christos@zoulas.com>, Landon Fuller <landonf@plausible.coop>, The FreeBSD Foundation <board@freebsdfoundation.org>, Michael Franz <mvfranz@gmail.com>, Roger Hoover <rhoover@apple.com>, Alexander Strange <astrange@apple.com>
| author | never |
|---|---|
| date | Sun, 25 Sep 2011 16:03:29 -0700 |
| parents | e6b1331a51d2 |
| children | a6eef545f1a2 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "classfile/systemDictionary.hpp" | |
| 27 #include "classfile/vmSymbols.hpp" | |
| 28 #include "interpreter/bytecodeStream.hpp" | |
| 29 #include "interpreter/interpreter.hpp" | |
| 30 #include "jvmtifiles/jvmtiEnv.hpp" | |
| 31 #include "memory/resourceArea.hpp" | |
| 32 #include "memory/universe.inline.hpp" | |
| 33 #include "oops/cpCacheOop.hpp" | |
| 34 #include "oops/instanceKlass.hpp" | |
| 35 #include "prims/jniCheck.hpp" | |
| 36 #include "prims/jvm_misc.hpp" | |
| 37 #include "prims/jvmtiAgentThread.hpp" | |
| 38 #include "prims/jvmtiClassFileReconstituter.hpp" | |
| 39 #include "prims/jvmtiCodeBlobEvents.hpp" | |
| 40 #include "prims/jvmtiExtensions.hpp" | |
| 41 #include "prims/jvmtiGetLoadedClasses.hpp" | |
| 42 #include "prims/jvmtiImpl.hpp" | |
| 43 #include "prims/jvmtiManageCapabilities.hpp" | |
| 44 #include "prims/jvmtiRawMonitor.hpp" | |
| 45 #include "prims/jvmtiRedefineClasses.hpp" | |
| 46 #include "prims/jvmtiTagMap.hpp" | |
| 47 #include "prims/jvmtiThreadState.inline.hpp" | |
| 48 #include "prims/jvmtiUtil.hpp" | |
| 49 #include "runtime/arguments.hpp" | |
| 50 #include "runtime/deoptimization.hpp" | |
| 51 #include "runtime/interfaceSupport.hpp" | |
| 52 #include "runtime/javaCalls.hpp" | |
| 53 #include "runtime/jfieldIDWorkaround.hpp" | |
| 54 #include "runtime/osThread.hpp" | |
| 55 #include "runtime/reflectionUtils.hpp" | |
| 56 #include "runtime/signature.hpp" | |
| 57 #include "runtime/vframe.hpp" | |
| 58 #include "runtime/vmThread.hpp" | |
| 59 #include "services/threadService.hpp" | |
| 60 #include "utilities/exceptions.hpp" | |
| 61 #include "utilities/preserveException.hpp" | |
| 62 #ifdef TARGET_OS_FAMILY_linux | |
| 63 # include "thread_linux.inline.hpp" | |
| 64 #endif | |
| 65 #ifdef TARGET_OS_FAMILY_solaris | |
| 66 # include "thread_solaris.inline.hpp" | |
| 67 #endif | |
| 68 #ifdef TARGET_OS_FAMILY_windows | |
| 69 # include "thread_windows.inline.hpp" | |
| 70 #endif | |
| 3960 | 71 #ifdef TARGET_OS_FAMILY_bsd |
| 72 # include "thread_bsd.inline.hpp" | |
| 73 #endif | |
| 1972 | 74 |
| 0 | 75 |
| 76 | |
| 77 #define FIXLATER 0 // REMOVE this when completed. | |
| 78 | |
| 79 // FIXLATER: hook into JvmtiTrace | |
| 80 #define TraceJVMTICalls false | |
| 81 | |
| 1121 | 82 JvmtiEnv::JvmtiEnv(jint version) : JvmtiEnvBase(version) { |
| 0 | 83 } |
| 84 | |
| 85 JvmtiEnv::~JvmtiEnv() { | |
| 86 } | |
| 87 | |
| 88 JvmtiEnv* | |
| 1121 | 89 JvmtiEnv::create_a_jvmti(jint version) { |
| 90 return new JvmtiEnv(version); | |
| 0 | 91 } |
| 92 | |
| 93 // VM operation class to copy jni function table at safepoint. | |
| 94 // More than one java threads or jvmti agents may be reading/ | |
| 95 // modifying jni function tables. To reduce the risk of bad | |
| 96 // interaction b/w these threads it is copied at safepoint. | |
| 97 class VM_JNIFunctionTableCopier : public VM_Operation { | |
| 98 private: | |
| 99 const struct JNINativeInterface_ *_function_table; | |
| 100 public: | |
| 101 VM_JNIFunctionTableCopier(const struct JNINativeInterface_ *func_tbl) { | |
| 102 _function_table = func_tbl; | |
| 103 }; | |
| 104 | |
| 105 VMOp_Type type() const { return VMOp_JNIFunctionTableCopier; } | |
| 106 void doit() { | |
| 107 copy_jni_function_table(_function_table); | |
| 108 }; | |
| 109 }; | |
| 110 | |
| 111 // | |
| 112 // Do not change the "prefix" marker below, everything above it is copied | |
| 113 // unchanged into the filled stub, everything below is controlled by the | |
| 114 // stub filler (only method bodies are carried forward, and then only for | |
| 115 // functionality still in the spec). | |
| 116 // | |
| 117 // end file prefix | |
| 118 | |
| 119 // | |
| 120 // Memory Management functions | |
| 121 // | |
| 122 | |
| 123 // mem_ptr - pre-checked for NULL | |
| 124 jvmtiError | |
| 125 JvmtiEnv::Allocate(jlong size, unsigned char** mem_ptr) { | |
| 126 return allocate(size, mem_ptr); | |
| 127 } /* end Allocate */ | |
| 128 | |
| 129 | |
| 130 // mem - NULL is a valid value, must be checked | |
| 131 jvmtiError | |
| 132 JvmtiEnv::Deallocate(unsigned char* mem) { | |
| 133 return deallocate(mem); | |
| 134 } /* end Deallocate */ | |
| 135 | |
| 136 // Threads_lock NOT held, java_thread not protected by lock | |
| 137 // java_thread - pre-checked | |
| 138 // data - NULL is a valid value, must be checked | |
| 139 jvmtiError | |
| 140 JvmtiEnv::SetThreadLocalStorage(JavaThread* java_thread, const void* data) { | |
| 141 JvmtiThreadState* state = java_thread->jvmti_thread_state(); | |
| 142 if (state == NULL) { | |
| 143 if (data == NULL) { | |
| 144 // leaving state unset same as data set to NULL | |
| 145 return JVMTI_ERROR_NONE; | |
| 146 } | |
| 147 // otherwise, create the state | |
| 148 state = JvmtiThreadState::state_for(java_thread); | |
|
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149 if (state == NULL) { |
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150 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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151 } |
| 0 | 152 } |
| 153 state->env_thread_state(this)->set_agent_thread_local_storage_data((void*)data); | |
| 154 return JVMTI_ERROR_NONE; | |
| 155 } /* end SetThreadLocalStorage */ | |
| 156 | |
| 157 | |
| 158 // Threads_lock NOT held | |
| 159 // thread - NOT pre-checked | |
| 160 // data_ptr - pre-checked for NULL | |
| 161 jvmtiError | |
| 162 JvmtiEnv::GetThreadLocalStorage(jthread thread, void** data_ptr) { | |
| 163 JavaThread* current_thread = JavaThread::current(); | |
| 164 if (thread == NULL) { | |
| 165 JvmtiThreadState* state = current_thread->jvmti_thread_state(); | |
| 166 *data_ptr = (state == NULL) ? NULL : | |
| 167 state->env_thread_state(this)->get_agent_thread_local_storage_data(); | |
| 168 } else { | |
| 169 | |
| 170 // jvmti_GetThreadLocalStorage is "in native" and doesn't transition | |
| 171 // the thread to _thread_in_vm. However, when the TLS for a thread | |
| 172 // other than the current thread is required we need to transition | |
| 173 // from native so as to resolve the jthread. | |
| 174 | |
| 175 ThreadInVMfromNative __tiv(current_thread); | |
| 176 __ENTRY(jvmtiError, JvmtiEnv::GetThreadLocalStorage , current_thread) | |
| 177 debug_only(VMNativeEntryWrapper __vew;) | |
| 178 | |
| 179 oop thread_oop = JNIHandles::resolve_external_guard(thread); | |
| 180 if (thread_oop == NULL) { | |
| 181 return JVMTI_ERROR_INVALID_THREAD; | |
| 182 } | |
| 1142 | 183 if (!thread_oop->is_a(SystemDictionary::Thread_klass())) { |
| 0 | 184 return JVMTI_ERROR_INVALID_THREAD; |
| 185 } | |
| 186 JavaThread* java_thread = java_lang_Thread::thread(thread_oop); | |
| 187 if (java_thread == NULL) { | |
| 188 return JVMTI_ERROR_THREAD_NOT_ALIVE; | |
| 189 } | |
| 190 JvmtiThreadState* state = java_thread->jvmti_thread_state(); | |
| 191 *data_ptr = (state == NULL) ? NULL : | |
| 192 state->env_thread_state(this)->get_agent_thread_local_storage_data(); | |
| 193 } | |
| 194 return JVMTI_ERROR_NONE; | |
| 195 } /* end GetThreadLocalStorage */ | |
| 196 | |
| 197 // | |
| 198 // Class functions | |
| 199 // | |
| 200 | |
| 201 // class_count_ptr - pre-checked for NULL | |
| 202 // classes_ptr - pre-checked for NULL | |
| 203 jvmtiError | |
| 204 JvmtiEnv::GetLoadedClasses(jint* class_count_ptr, jclass** classes_ptr) { | |
| 205 return JvmtiGetLoadedClasses::getLoadedClasses(this, class_count_ptr, classes_ptr); | |
| 206 } /* end GetLoadedClasses */ | |
| 207 | |
| 208 | |
| 209 // initiating_loader - NULL is a valid value, must be checked | |
| 210 // class_count_ptr - pre-checked for NULL | |
| 211 // classes_ptr - pre-checked for NULL | |
| 212 jvmtiError | |
| 213 JvmtiEnv::GetClassLoaderClasses(jobject initiating_loader, jint* class_count_ptr, jclass** classes_ptr) { | |
| 214 return JvmtiGetLoadedClasses::getClassLoaderClasses(this, initiating_loader, | |
| 215 class_count_ptr, classes_ptr); | |
| 216 } /* end GetClassLoaderClasses */ | |
| 217 | |
| 218 // k_mirror - may be primitive, this must be checked | |
| 219 // is_modifiable_class_ptr - pre-checked for NULL | |
| 220 jvmtiError | |
| 221 JvmtiEnv::IsModifiableClass(oop k_mirror, jboolean* is_modifiable_class_ptr) { | |
| 222 *is_modifiable_class_ptr = VM_RedefineClasses::is_modifiable_class(k_mirror)? | |
| 223 JNI_TRUE : JNI_FALSE; | |
| 224 return JVMTI_ERROR_NONE; | |
| 225 } /* end IsModifiableClass */ | |
| 226 | |
| 227 // class_count - pre-checked to be greater than or equal to 0 | |
| 228 // classes - pre-checked for NULL | |
| 229 jvmtiError | |
| 230 JvmtiEnv::RetransformClasses(jint class_count, const jclass* classes) { | |
| 231 //TODO: add locking | |
| 232 | |
| 233 int index; | |
| 234 JavaThread* current_thread = JavaThread::current(); | |
| 235 ResourceMark rm(current_thread); | |
| 236 | |
| 237 jvmtiClassDefinition* class_definitions = | |
| 238 NEW_RESOURCE_ARRAY(jvmtiClassDefinition, class_count); | |
| 239 NULL_CHECK(class_definitions, JVMTI_ERROR_OUT_OF_MEMORY); | |
| 240 | |
| 241 for (index = 0; index < class_count; index++) { | |
| 242 HandleMark hm(current_thread); | |
| 243 | |
| 244 jclass jcls = classes[index]; | |
| 245 oop k_mirror = JNIHandles::resolve_external_guard(jcls); | |
| 246 if (k_mirror == NULL) { | |
| 247 return JVMTI_ERROR_INVALID_CLASS; | |
| 248 } | |
| 1142 | 249 if (!k_mirror->is_a(SystemDictionary::Class_klass())) { |
| 0 | 250 return JVMTI_ERROR_INVALID_CLASS; |
| 251 } | |
| 252 | |
| 253 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 254 return JVMTI_ERROR_UNMODIFIABLE_CLASS; | |
| 255 } | |
| 256 | |
| 257 klassOop k_oop = java_lang_Class::as_klassOop(k_mirror); | |
| 258 KlassHandle klass(current_thread, k_oop); | |
| 259 | |
| 260 jint status = klass->jvmti_class_status(); | |
| 261 if (status & (JVMTI_CLASS_STATUS_ERROR)) { | |
| 262 return JVMTI_ERROR_INVALID_CLASS; | |
| 263 } | |
| 264 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { | |
| 265 return JVMTI_ERROR_UNMODIFIABLE_CLASS; | |
| 266 } | |
| 267 | |
| 268 instanceKlassHandle ikh(current_thread, k_oop); | |
| 269 if (ikh->get_cached_class_file_bytes() == NULL) { | |
| 270 // not cached, we need to reconstitute the class file from VM representation | |
| 271 constantPoolHandle constants(current_thread, ikh->constants()); | |
| 272 ObjectLocker ol(constants, current_thread); // lock constant pool while we query it | |
| 273 | |
| 274 JvmtiClassFileReconstituter reconstituter(ikh); | |
| 275 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
| 276 return reconstituter.get_error(); | |
| 277 } | |
| 278 | |
| 279 class_definitions[index].class_byte_count = (jint)reconstituter.class_file_size(); | |
| 280 class_definitions[index].class_bytes = (unsigned char*) | |
| 281 reconstituter.class_file_bytes(); | |
| 282 } else { | |
| 283 // it is cached, get it from the cache | |
| 284 class_definitions[index].class_byte_count = ikh->get_cached_class_file_len(); | |
| 285 class_definitions[index].class_bytes = ikh->get_cached_class_file_bytes(); | |
| 286 } | |
| 287 class_definitions[index].klass = jcls; | |
| 288 } | |
| 289 VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_retransform); | |
| 290 VMThread::execute(&op); | |
| 291 return (op.check_error()); | |
| 292 } /* end RetransformClasses */ | |
| 293 | |
| 294 | |
| 295 // class_count - pre-checked to be greater than or equal to 0 | |
| 296 // class_definitions - pre-checked for NULL | |
| 297 jvmtiError | |
| 298 JvmtiEnv::RedefineClasses(jint class_count, const jvmtiClassDefinition* class_definitions) { | |
| 299 //TODO: add locking | |
| 300 VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_redefine); | |
| 301 VMThread::execute(&op); | |
| 302 return (op.check_error()); | |
| 303 } /* end RedefineClasses */ | |
| 304 | |
| 305 | |
| 306 // | |
| 307 // Object functions | |
| 308 // | |
| 309 | |
| 310 // size_ptr - pre-checked for NULL | |
| 311 jvmtiError | |
| 312 JvmtiEnv::GetObjectSize(jobject object, jlong* size_ptr) { | |
| 313 oop mirror = JNIHandles::resolve_external_guard(object); | |
| 314 NULL_CHECK(mirror, JVMTI_ERROR_INVALID_OBJECT); | |
| 315 | |
| 1142 | 316 if (mirror->klass() == SystemDictionary::Class_klass()) { |
| 0 | 317 if (!java_lang_Class::is_primitive(mirror)) { |
| 318 mirror = java_lang_Class::as_klassOop(mirror); | |
| 319 assert(mirror != NULL, "class for non-primitive mirror must exist"); | |
| 320 } | |
| 321 } | |
| 322 | |
| 323 *size_ptr = mirror->size() * wordSize; | |
| 324 return JVMTI_ERROR_NONE; | |
| 325 } /* end GetObjectSize */ | |
| 326 | |
| 327 // | |
| 328 // Method functions | |
| 329 // | |
| 330 | |
| 331 // prefix - NULL is a valid value, must be checked | |
| 332 jvmtiError | |
| 333 JvmtiEnv::SetNativeMethodPrefix(const char* prefix) { | |
| 334 return prefix == NULL? | |
| 335 SetNativeMethodPrefixes(0, NULL) : | |
| 336 SetNativeMethodPrefixes(1, (char**)&prefix); | |
| 337 } /* end SetNativeMethodPrefix */ | |
| 338 | |
| 339 | |
| 340 // prefix_count - pre-checked to be greater than or equal to 0 | |
| 341 // prefixes - pre-checked for NULL | |
| 342 jvmtiError | |
| 343 JvmtiEnv::SetNativeMethodPrefixes(jint prefix_count, char** prefixes) { | |
| 344 // Have to grab JVMTI thread state lock to be sure that some thread | |
| 345 // isn't accessing the prefixes at the same time we are setting them. | |
| 346 // No locks during VM bring-up. | |
| 347 if (Threads::number_of_threads() == 0) { | |
| 348 return set_native_method_prefixes(prefix_count, prefixes); | |
| 349 } else { | |
| 350 MutexLocker mu(JvmtiThreadState_lock); | |
| 351 return set_native_method_prefixes(prefix_count, prefixes); | |
| 352 } | |
| 353 } /* end SetNativeMethodPrefixes */ | |
| 354 | |
| 355 // | |
| 356 // Event Management functions | |
| 357 // | |
| 358 | |
| 359 // callbacks - NULL is a valid value, must be checked | |
| 360 // size_of_callbacks - pre-checked to be greater than or equal to 0 | |
| 361 jvmtiError | |
| 362 JvmtiEnv::SetEventCallbacks(const jvmtiEventCallbacks* callbacks, jint size_of_callbacks) { | |
| 363 JvmtiEventController::set_event_callbacks(this, callbacks, size_of_callbacks); | |
| 364 return JVMTI_ERROR_NONE; | |
| 365 } /* end SetEventCallbacks */ | |
| 366 | |
| 367 | |
| 368 // event_thread - NULL is a valid value, must be checked | |
| 369 jvmtiError | |
| 370 JvmtiEnv::SetEventNotificationMode(jvmtiEventMode mode, jvmtiEvent event_type, jthread event_thread, ...) { | |
| 371 JavaThread* java_thread = NULL; | |
| 372 if (event_thread != NULL) { | |
| 373 oop thread_oop = JNIHandles::resolve_external_guard(event_thread); | |
| 374 if (thread_oop == NULL) { | |
| 375 return JVMTI_ERROR_INVALID_THREAD; | |
| 376 } | |
| 1142 | 377 if (!thread_oop->is_a(SystemDictionary::Thread_klass())) { |
| 0 | 378 return JVMTI_ERROR_INVALID_THREAD; |
| 379 } | |
| 380 java_thread = java_lang_Thread::thread(thread_oop); | |
| 381 if (java_thread == NULL) { | |
| 382 return JVMTI_ERROR_THREAD_NOT_ALIVE; | |
| 383 } | |
| 384 } | |
| 385 | |
| 386 // event_type must be valid | |
| 387 if (!JvmtiEventController::is_valid_event_type(event_type)) { | |
| 388 return JVMTI_ERROR_INVALID_EVENT_TYPE; | |
| 389 } | |
| 390 | |
| 391 // global events cannot be controlled at thread level. | |
| 392 if (java_thread != NULL && JvmtiEventController::is_global_event(event_type)) { | |
| 393 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
| 394 } | |
| 395 | |
| 396 bool enabled = (mode == JVMTI_ENABLE); | |
| 397 | |
| 398 // assure that needed capabilities are present | |
| 399 if (enabled && !JvmtiUtil::has_event_capability(event_type, get_capabilities())) { | |
| 400 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; | |
| 401 } | |
| 402 | |
| 403 if (event_type == JVMTI_EVENT_CLASS_FILE_LOAD_HOOK && enabled) { | |
| 404 record_class_file_load_hook_enabled(); | |
| 405 } | |
| 406 JvmtiEventController::set_user_enabled(this, java_thread, event_type, enabled); | |
| 407 | |
| 408 return JVMTI_ERROR_NONE; | |
| 409 } /* end SetEventNotificationMode */ | |
| 410 | |
| 411 // | |
| 412 // Capability functions | |
| 413 // | |
| 414 | |
| 415 // capabilities_ptr - pre-checked for NULL | |
| 416 jvmtiError | |
| 417 JvmtiEnv::GetPotentialCapabilities(jvmtiCapabilities* capabilities_ptr) { | |
| 418 JvmtiManageCapabilities::get_potential_capabilities(get_capabilities(), | |
| 419 get_prohibited_capabilities(), | |
| 420 capabilities_ptr); | |
| 421 return JVMTI_ERROR_NONE; | |
| 422 } /* end GetPotentialCapabilities */ | |
| 423 | |
| 424 | |
| 425 // capabilities_ptr - pre-checked for NULL | |
| 426 jvmtiError | |
| 427 JvmtiEnv::AddCapabilities(const jvmtiCapabilities* capabilities_ptr) { | |
| 428 return JvmtiManageCapabilities::add_capabilities(get_capabilities(), | |
| 429 get_prohibited_capabilities(), | |
| 430 capabilities_ptr, | |
| 431 get_capabilities()); | |
| 432 } /* end AddCapabilities */ | |
| 433 | |
| 434 | |
| 435 // capabilities_ptr - pre-checked for NULL | |
| 436 jvmtiError | |
| 437 JvmtiEnv::RelinquishCapabilities(const jvmtiCapabilities* capabilities_ptr) { | |
| 438 JvmtiManageCapabilities::relinquish_capabilities(get_capabilities(), capabilities_ptr, get_capabilities()); | |
| 439 return JVMTI_ERROR_NONE; | |
| 440 } /* end RelinquishCapabilities */ | |
| 441 | |
| 442 | |
| 443 // capabilities_ptr - pre-checked for NULL | |
| 444 jvmtiError | |
| 445 JvmtiEnv::GetCapabilities(jvmtiCapabilities* capabilities_ptr) { | |
| 446 JvmtiManageCapabilities::copy_capabilities(get_capabilities(), capabilities_ptr); | |
| 447 return JVMTI_ERROR_NONE; | |
| 448 } /* end GetCapabilities */ | |
| 449 | |
| 450 // | |
| 451 // Class Loader Search functions | |
| 452 // | |
| 453 | |
| 454 // segment - pre-checked for NULL | |
| 455 jvmtiError | |
| 456 JvmtiEnv::AddToBootstrapClassLoaderSearch(const char* segment) { | |
| 457 jvmtiPhase phase = get_phase(); | |
| 458 if (phase == JVMTI_PHASE_ONLOAD) { | |
| 459 Arguments::append_sysclasspath(segment); | |
| 460 return JVMTI_ERROR_NONE; | |
| 1121 | 461 } else if (use_version_1_0_semantics()) { |
| 462 // This JvmtiEnv requested version 1.0 semantics and this function | |
| 463 // is only allowed in the ONLOAD phase in version 1.0 so we need to | |
| 464 // return an error here. | |
| 465 return JVMTI_ERROR_WRONG_PHASE; | |
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466 } else if (phase == JVMTI_PHASE_LIVE) { |
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467 // The phase is checked by the wrapper that called this function, |
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468 // but this thread could be racing with the thread that is |
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469 // terminating the VM so we check one more time. |
| 0 | 470 |
| 471 // create the zip entry | |
| 472 ClassPathZipEntry* zip_entry = ClassLoader::create_class_path_zip_entry(segment); | |
| 473 if (zip_entry == NULL) { | |
| 474 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
| 475 } | |
| 476 | |
| 477 // lock the loader | |
| 478 Thread* thread = Thread::current(); | |
| 479 HandleMark hm; | |
| 480 Handle loader_lock = Handle(thread, SystemDictionary::system_loader_lock()); | |
| 481 | |
| 482 ObjectLocker ol(loader_lock, thread); | |
| 483 | |
| 484 // add the jar file to the bootclasspath | |
| 485 if (TraceClassLoading) { | |
| 486 tty->print_cr("[Opened %s]", zip_entry->name()); | |
| 487 } | |
| 488 ClassLoader::add_to_list(zip_entry); | |
| 489 return JVMTI_ERROR_NONE; | |
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490 } else { |
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491 return JVMTI_ERROR_WRONG_PHASE; |
| 0 | 492 } |
| 493 | |
| 494 } /* end AddToBootstrapClassLoaderSearch */ | |
| 495 | |
| 496 | |
| 497 // segment - pre-checked for NULL | |
| 498 jvmtiError | |
| 499 JvmtiEnv::AddToSystemClassLoaderSearch(const char* segment) { | |
| 500 jvmtiPhase phase = get_phase(); | |
| 501 | |
| 502 if (phase == JVMTI_PHASE_ONLOAD) { | |
| 503 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
| 504 if (strcmp("java.class.path", p->key()) == 0) { | |
| 505 p->append_value(segment); | |
| 506 break; | |
| 507 } | |
| 508 } | |
| 509 return JVMTI_ERROR_NONE; | |
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510 } else if (phase == JVMTI_PHASE_LIVE) { |
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511 // The phase is checked by the wrapper that called this function, |
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512 // but this thread could be racing with the thread that is |
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513 // terminating the VM so we check one more time. |
| 0 | 514 HandleMark hm; |
| 515 | |
| 516 // create the zip entry (which will open the zip file and hence | |
| 517 // check that the segment is indeed a zip file). | |
| 518 ClassPathZipEntry* zip_entry = ClassLoader::create_class_path_zip_entry(segment); | |
| 519 if (zip_entry == NULL) { | |
| 520 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
| 521 } | |
| 522 delete zip_entry; // no longer needed | |
| 523 | |
| 524 // lock the loader | |
| 525 Thread* THREAD = Thread::current(); | |
| 526 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); | |
| 527 | |
| 528 ObjectLocker ol(loader, THREAD); | |
| 529 | |
| 530 // need the path as java.lang.String | |
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531 Handle path = java_lang_String::create_from_platform_dependent_str(segment, THREAD); |
| 0 | 532 if (HAS_PENDING_EXCEPTION) { |
| 533 CLEAR_PENDING_EXCEPTION; | |
| 534 return JVMTI_ERROR_INTERNAL; | |
| 535 } | |
| 536 | |
| 537 instanceKlassHandle loader_ik(THREAD, loader->klass()); | |
| 538 | |
| 539 // Invoke the appendToClassPathForInstrumentation method - if the method | |
| 540 // is not found it means the loader doesn't support adding to the class path | |
| 541 // in the live phase. | |
| 542 { | |
| 543 JavaValue res(T_VOID); | |
| 544 JavaCalls::call_special(&res, | |
| 545 loader, | |
| 546 loader_ik, | |
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547 vmSymbols::appendToClassPathForInstrumentation_name(), |
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548 vmSymbols::appendToClassPathForInstrumentation_signature(), |
| 0 | 549 path, |
| 550 THREAD); | |
| 551 if (HAS_PENDING_EXCEPTION) { | |
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552 Symbol* ex_name = PENDING_EXCEPTION->klass()->klass_part()->name(); |
| 0 | 553 CLEAR_PENDING_EXCEPTION; |
| 554 | |
| 555 if (ex_name == vmSymbols::java_lang_NoSuchMethodError()) { | |
| 556 return JVMTI_ERROR_CLASS_LOADER_UNSUPPORTED; | |
| 557 } else { | |
| 558 return JVMTI_ERROR_INTERNAL; | |
| 559 } | |
| 560 } | |
| 561 } | |
| 562 | |
| 563 return JVMTI_ERROR_NONE; | |
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564 } else { |
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565 return JVMTI_ERROR_WRONG_PHASE; |
| 0 | 566 } |
| 567 } /* end AddToSystemClassLoaderSearch */ | |
| 568 | |
| 569 // | |
| 570 // General functions | |
| 571 // | |
| 572 | |
| 573 // phase_ptr - pre-checked for NULL | |
| 574 jvmtiError | |
| 575 JvmtiEnv::GetPhase(jvmtiPhase* phase_ptr) { | |
| 576 *phase_ptr = get_phase(); | |
| 577 return JVMTI_ERROR_NONE; | |
| 578 } /* end GetPhase */ | |
| 579 | |
| 580 | |
| 581 jvmtiError | |
| 582 JvmtiEnv::DisposeEnvironment() { | |
| 583 dispose(); | |
| 584 return JVMTI_ERROR_NONE; | |
| 585 } /* end DisposeEnvironment */ | |
| 586 | |
| 587 | |
| 588 // data - NULL is a valid value, must be checked | |
| 589 jvmtiError | |
| 590 JvmtiEnv::SetEnvironmentLocalStorage(const void* data) { | |
| 591 set_env_local_storage(data); | |
| 592 return JVMTI_ERROR_NONE; | |
| 593 } /* end SetEnvironmentLocalStorage */ | |
| 594 | |
| 595 | |
| 596 // data_ptr - pre-checked for NULL | |
| 597 jvmtiError | |
| 598 JvmtiEnv::GetEnvironmentLocalStorage(void** data_ptr) { | |
| 599 *data_ptr = (void*)get_env_local_storage(); | |
| 600 return JVMTI_ERROR_NONE; | |
| 601 } /* end GetEnvironmentLocalStorage */ | |
| 602 | |
| 603 // version_ptr - pre-checked for NULL | |
| 604 jvmtiError | |
| 605 JvmtiEnv::GetVersionNumber(jint* version_ptr) { | |
| 606 *version_ptr = JVMTI_VERSION; | |
| 607 return JVMTI_ERROR_NONE; | |
| 608 } /* end GetVersionNumber */ | |
| 609 | |
| 610 | |
| 611 // name_ptr - pre-checked for NULL | |
| 612 jvmtiError | |
| 613 JvmtiEnv::GetErrorName(jvmtiError error, char** name_ptr) { | |
| 614 if (error < JVMTI_ERROR_NONE || error > JVMTI_ERROR_MAX) { | |
| 615 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
| 616 } | |
| 617 const char *name = JvmtiUtil::error_name(error); | |
| 618 if (name == NULL) { | |
| 619 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
| 620 } | |
| 621 size_t len = strlen(name) + 1; | |
| 622 jvmtiError err = allocate(len, (unsigned char**)name_ptr); | |
| 623 if (err == JVMTI_ERROR_NONE) { | |
| 624 memcpy(*name_ptr, name, len); | |
| 625 } | |
| 626 return err; | |
| 627 } /* end GetErrorName */ | |
| 628 | |
| 629 | |
| 630 jvmtiError | |
| 631 JvmtiEnv::SetVerboseFlag(jvmtiVerboseFlag flag, jboolean value) { | |
| 632 switch (flag) { | |
| 633 case JVMTI_VERBOSE_OTHER: | |
| 634 // ignore | |
| 635 break; | |
| 636 case JVMTI_VERBOSE_CLASS: | |
| 637 TraceClassLoading = value != 0; | |
| 638 TraceClassUnloading = value != 0; | |
| 639 break; | |
| 640 case JVMTI_VERBOSE_GC: | |
| 641 PrintGC = value != 0; | |
| 642 break; | |
| 643 case JVMTI_VERBOSE_JNI: | |
| 644 PrintJNIResolving = value != 0; | |
| 645 break; | |
| 646 default: | |
| 647 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
| 648 }; | |
| 649 return JVMTI_ERROR_NONE; | |
| 650 } /* end SetVerboseFlag */ | |
| 651 | |
| 652 | |
| 653 // format_ptr - pre-checked for NULL | |
| 654 jvmtiError | |
| 655 JvmtiEnv::GetJLocationFormat(jvmtiJlocationFormat* format_ptr) { | |
| 656 *format_ptr = JVMTI_JLOCATION_JVMBCI; | |
| 657 return JVMTI_ERROR_NONE; | |
| 658 } /* end GetJLocationFormat */ | |
| 659 | |
| 660 #ifndef JVMTI_KERNEL | |
| 661 | |
| 662 // | |
| 663 // Thread functions | |
| 664 // | |
| 665 | |
| 666 // Threads_lock NOT held | |
| 667 // thread - NOT pre-checked | |
| 668 // thread_state_ptr - pre-checked for NULL | |
| 669 jvmtiError | |
| 670 JvmtiEnv::GetThreadState(jthread thread, jint* thread_state_ptr) { | |
| 671 jint state; | |
| 672 oop thread_oop; | |
| 673 JavaThread* thr; | |
| 674 | |
| 675 if (thread == NULL) { | |
| 676 thread_oop = JavaThread::current()->threadObj(); | |
| 677 } else { | |
| 678 thread_oop = JNIHandles::resolve_external_guard(thread); | |
| 679 } | |
| 680 | |
| 1142 | 681 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) { |
| 0 | 682 return JVMTI_ERROR_INVALID_THREAD; |
| 683 } | |
| 684 | |
| 685 // get most state bits | |
| 686 state = (jint)java_lang_Thread::get_thread_status(thread_oop); | |
| 687 | |
| 688 // add more state bits | |
| 689 thr = java_lang_Thread::thread(thread_oop); | |
| 690 if (thr != NULL) { | |
| 691 JavaThreadState jts = thr->thread_state(); | |
| 692 | |
| 693 if (thr->is_being_ext_suspended()) { | |
| 694 state |= JVMTI_THREAD_STATE_SUSPENDED; | |
| 695 } | |
| 696 if (jts == _thread_in_native) { | |
| 697 state |= JVMTI_THREAD_STATE_IN_NATIVE; | |
| 698 } | |
| 699 OSThread* osThread = thr->osthread(); | |
| 700 if (osThread != NULL && osThread->interrupted()) { | |
| 701 state |= JVMTI_THREAD_STATE_INTERRUPTED; | |
| 702 } | |
| 703 } | |
| 704 | |
| 705 *thread_state_ptr = state; | |
| 706 return JVMTI_ERROR_NONE; | |
| 707 } /* end GetThreadState */ | |
| 708 | |
| 709 | |
| 710 // thread_ptr - pre-checked for NULL | |
| 711 jvmtiError | |
| 712 JvmtiEnv::GetCurrentThread(jthread* thread_ptr) { | |
| 713 JavaThread* current_thread = JavaThread::current(); | |
| 714 *thread_ptr = (jthread)JNIHandles::make_local(current_thread, current_thread->threadObj()); | |
| 715 return JVMTI_ERROR_NONE; | |
| 716 } /* end GetCurrentThread */ | |
| 717 | |
| 718 | |
| 719 // threads_count_ptr - pre-checked for NULL | |
| 720 // threads_ptr - pre-checked for NULL | |
| 721 jvmtiError | |
| 722 JvmtiEnv::GetAllThreads(jint* threads_count_ptr, jthread** threads_ptr) { | |
| 723 int nthreads = 0; | |
| 724 Handle *thread_objs = NULL; | |
| 725 ResourceMark rm; | |
| 726 HandleMark hm; | |
| 727 | |
| 728 // enumerate threads (including agent threads) | |
| 729 ThreadsListEnumerator tle(Thread::current(), true); | |
| 730 nthreads = tle.num_threads(); | |
| 731 *threads_count_ptr = nthreads; | |
| 732 | |
| 733 if (nthreads == 0) { | |
| 734 *threads_ptr = NULL; | |
| 735 return JVMTI_ERROR_NONE; | |
| 736 } | |
| 737 | |
| 738 thread_objs = NEW_RESOURCE_ARRAY(Handle, nthreads); | |
| 739 NULL_CHECK(thread_objs, JVMTI_ERROR_OUT_OF_MEMORY); | |
| 740 | |
| 741 for (int i=0; i < nthreads; i++) { | |
| 742 thread_objs[i] = Handle(tle.get_threadObj(i)); | |
| 743 } | |
| 744 | |
| 745 // have to make global handles outside of Threads_lock | |
| 746 jthread *jthreads = new_jthreadArray(nthreads, thread_objs); | |
| 747 NULL_CHECK(jthreads, JVMTI_ERROR_OUT_OF_MEMORY); | |
| 748 | |
| 749 *threads_ptr = jthreads; | |
| 750 return JVMTI_ERROR_NONE; | |
| 751 } /* end GetAllThreads */ | |
| 752 | |
| 753 | |
| 754 // Threads_lock NOT held, java_thread not protected by lock | |
| 755 // java_thread - pre-checked | |
| 756 jvmtiError | |
| 757 JvmtiEnv::SuspendThread(JavaThread* java_thread) { | |
| 758 // don't allow hidden thread suspend request. | |
| 759 if (java_thread->is_hidden_from_external_view()) { | |
| 760 return (JVMTI_ERROR_NONE); | |
| 761 } | |
| 762 | |
| 763 { | |
| 764 MutexLockerEx ml(java_thread->SR_lock(), Mutex::_no_safepoint_check_flag); | |
| 765 if (java_thread->is_external_suspend()) { | |
| 766 // don't allow nested external suspend requests. | |
| 767 return (JVMTI_ERROR_THREAD_SUSPENDED); | |
| 768 } | |
| 769 if (java_thread->is_exiting()) { // thread is in the process of exiting | |
| 770 return (JVMTI_ERROR_THREAD_NOT_ALIVE); | |
| 771 } | |
| 772 java_thread->set_external_suspend(); | |
| 773 } | |
| 774 | |
| 775 if (!JvmtiSuspendControl::suspend(java_thread)) { | |
| 776 // the thread was in the process of exiting | |
| 777 return (JVMTI_ERROR_THREAD_NOT_ALIVE); | |
| 778 } | |
| 779 return JVMTI_ERROR_NONE; | |
| 780 } /* end SuspendThread */ | |
| 781 | |
| 782 | |
| 783 // request_count - pre-checked to be greater than or equal to 0 | |
| 784 // request_list - pre-checked for NULL | |
| 785 // results - pre-checked for NULL | |
| 786 jvmtiError | |
| 787 JvmtiEnv::SuspendThreadList(jint request_count, const jthread* request_list, jvmtiError* results) { | |
| 788 int needSafepoint = 0; // > 0 if we need a safepoint | |
| 789 for (int i = 0; i < request_count; i++) { | |
| 790 JavaThread *java_thread = get_JavaThread(request_list[i]); | |
| 791 if (java_thread == NULL) { | |
| 792 results[i] = JVMTI_ERROR_INVALID_THREAD; | |
| 793 continue; | |
| 794 } | |
| 795 // the thread has not yet run or has exited (not on threads list) | |
| 796 if (java_thread->threadObj() == NULL) { | |
| 797 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
| 798 continue; | |
| 799 } | |
| 800 if (java_lang_Thread::thread(java_thread->threadObj()) == NULL) { | |
| 801 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
| 802 continue; | |
| 803 } | |
| 804 // don't allow hidden thread suspend request. | |
| 805 if (java_thread->is_hidden_from_external_view()) { | |
| 806 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend | |
| 807 continue; | |
| 808 } | |
| 809 | |
| 810 { | |
| 811 MutexLockerEx ml(java_thread->SR_lock(), Mutex::_no_safepoint_check_flag); | |
| 812 if (java_thread->is_external_suspend()) { | |
| 813 // don't allow nested external suspend requests. | |
| 814 results[i] = JVMTI_ERROR_THREAD_SUSPENDED; | |
| 815 continue; | |
| 816 } | |
| 817 if (java_thread->is_exiting()) { // thread is in the process of exiting | |
| 818 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
| 819 continue; | |
| 820 } | |
| 821 java_thread->set_external_suspend(); | |
| 822 } | |
| 823 if (java_thread->thread_state() == _thread_in_native) { | |
| 824 // We need to try and suspend native threads here. Threads in | |
| 825 // other states will self-suspend on their next transition. | |
| 826 if (!JvmtiSuspendControl::suspend(java_thread)) { | |
| 827 // The thread was in the process of exiting. Force another | |
| 828 // safepoint to make sure that this thread transitions. | |
| 829 needSafepoint++; | |
| 830 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
| 831 continue; | |
| 832 } | |
| 833 } else { | |
| 834 needSafepoint++; | |
| 835 } | |
| 836 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend | |
| 837 } | |
| 838 if (needSafepoint > 0) { | |
| 839 VM_ForceSafepoint vfs; | |
| 840 VMThread::execute(&vfs); | |
| 841 } | |
| 842 // per-thread suspend results returned via results parameter | |
| 843 return JVMTI_ERROR_NONE; | |
| 844 } /* end SuspendThreadList */ | |
| 845 | |
| 846 | |
| 847 // Threads_lock NOT held, java_thread not protected by lock | |
| 848 // java_thread - pre-checked | |
| 849 jvmtiError | |
| 850 JvmtiEnv::ResumeThread(JavaThread* java_thread) { | |
| 851 // don't allow hidden thread resume request. | |
| 852 if (java_thread->is_hidden_from_external_view()) { | |
| 853 return JVMTI_ERROR_NONE; | |
| 854 } | |
| 855 | |
| 856 if (!java_thread->is_being_ext_suspended()) { | |
| 857 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
| 858 } | |
| 859 | |
| 860 if (!JvmtiSuspendControl::resume(java_thread)) { | |
| 861 return JVMTI_ERROR_INTERNAL; | |
| 862 } | |
| 863 return JVMTI_ERROR_NONE; | |
| 864 } /* end ResumeThread */ | |
| 865 | |
| 866 | |
| 867 // request_count - pre-checked to be greater than or equal to 0 | |
| 868 // request_list - pre-checked for NULL | |
| 869 // results - pre-checked for NULL | |
| 870 jvmtiError | |
| 871 JvmtiEnv::ResumeThreadList(jint request_count, const jthread* request_list, jvmtiError* results) { | |
| 872 for (int i = 0; i < request_count; i++) { | |
| 873 JavaThread *java_thread = get_JavaThread(request_list[i]); | |
| 874 if (java_thread == NULL) { | |
| 875 results[i] = JVMTI_ERROR_INVALID_THREAD; | |
| 876 continue; | |
| 877 } | |
| 878 // don't allow hidden thread resume request. | |
| 879 if (java_thread->is_hidden_from_external_view()) { | |
| 880 results[i] = JVMTI_ERROR_NONE; // indicate successful resume | |
| 881 continue; | |
| 882 } | |
| 883 if (!java_thread->is_being_ext_suspended()) { | |
| 884 results[i] = JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
| 885 continue; | |
| 886 } | |
| 887 | |
| 888 if (!JvmtiSuspendControl::resume(java_thread)) { | |
| 889 results[i] = JVMTI_ERROR_INTERNAL; | |
| 890 continue; | |
| 891 } | |
| 892 | |
| 893 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend | |
| 894 } | |
| 895 // per-thread resume results returned via results parameter | |
| 896 return JVMTI_ERROR_NONE; | |
| 897 } /* end ResumeThreadList */ | |
| 898 | |
| 899 | |
| 900 // Threads_lock NOT held, java_thread not protected by lock | |
| 901 // java_thread - pre-checked | |
| 902 jvmtiError | |
| 903 JvmtiEnv::StopThread(JavaThread* java_thread, jobject exception) { | |
| 904 oop e = JNIHandles::resolve_external_guard(exception); | |
| 905 NULL_CHECK(e, JVMTI_ERROR_NULL_POINTER); | |
| 906 | |
| 907 JavaThread::send_async_exception(java_thread->threadObj(), e); | |
| 908 | |
| 909 return JVMTI_ERROR_NONE; | |
| 910 | |
| 911 } /* end StopThread */ | |
| 912 | |
| 913 | |
| 914 // Threads_lock NOT held | |
| 915 // thread - NOT pre-checked | |
| 916 jvmtiError | |
| 917 JvmtiEnv::InterruptThread(jthread thread) { | |
| 918 oop thread_oop = JNIHandles::resolve_external_guard(thread); | |
| 1142 | 919 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) |
| 0 | 920 return JVMTI_ERROR_INVALID_THREAD; |
| 921 | |
| 922 JavaThread* current_thread = JavaThread::current(); | |
| 923 | |
| 924 // Todo: this is a duplicate of JVM_Interrupt; share code in future | |
| 925 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 926 MutexLockerEx ml(current_thread->threadObj() == thread_oop ? NULL : Threads_lock); | |
| 927 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 928 // acquire of the lock | |
| 929 | |
| 930 JavaThread* java_thread = java_lang_Thread::thread(JNIHandles::resolve_external_guard(thread)); | |
| 931 NULL_CHECK(java_thread, JVMTI_ERROR_THREAD_NOT_ALIVE); | |
| 932 | |
| 933 Thread::interrupt(java_thread); | |
| 934 | |
| 935 return JVMTI_ERROR_NONE; | |
| 936 } /* end InterruptThread */ | |
| 937 | |
| 938 | |
| 939 // Threads_lock NOT held | |
| 940 // thread - NOT pre-checked | |
| 941 // info_ptr - pre-checked for NULL | |
| 942 jvmtiError | |
| 943 JvmtiEnv::GetThreadInfo(jthread thread, jvmtiThreadInfo* info_ptr) { | |
| 944 ResourceMark rm; | |
| 945 HandleMark hm; | |
| 946 | |
| 947 JavaThread* current_thread = JavaThread::current(); | |
| 948 | |
| 949 // if thread is NULL the current thread is used | |
| 950 oop thread_oop; | |
| 951 if (thread == NULL) { | |
| 952 thread_oop = current_thread->threadObj(); | |
| 953 } else { | |
| 954 thread_oop = JNIHandles::resolve_external_guard(thread); | |
| 955 } | |
| 1142 | 956 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) |
| 0 | 957 return JVMTI_ERROR_INVALID_THREAD; |
| 958 | |
| 959 Handle thread_obj(current_thread, thread_oop); | |
| 960 typeArrayHandle name; | |
| 961 ThreadPriority priority; | |
| 962 Handle thread_group; | |
| 963 Handle context_class_loader; | |
| 964 bool is_daemon; | |
| 965 | |
| 966 { MutexLocker mu(Threads_lock); | |
| 967 | |
| 968 name = typeArrayHandle(current_thread, java_lang_Thread::name(thread_obj())); | |
| 969 priority = java_lang_Thread::priority(thread_obj()); | |
| 970 thread_group = Handle(current_thread, java_lang_Thread::threadGroup(thread_obj())); | |
| 971 is_daemon = java_lang_Thread::is_daemon(thread_obj()); | |
| 972 | |
| 973 oop loader = java_lang_Thread::context_class_loader(thread_obj()); | |
| 974 context_class_loader = Handle(current_thread, loader); | |
| 975 } | |
| 976 { const char *n; | |
| 977 | |
| 978 if (name() != NULL) { | |
| 979 n = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length()); | |
| 980 } else { | |
| 981 n = UNICODE::as_utf8(NULL, 0); | |
| 982 } | |
| 983 | |
| 984 info_ptr->name = (char *) jvmtiMalloc(strlen(n)+1); | |
| 985 if (info_ptr->name == NULL) | |
| 986 return JVMTI_ERROR_OUT_OF_MEMORY; | |
| 987 | |
| 988 strcpy(info_ptr->name, n); | |
| 989 } | |
| 990 info_ptr->is_daemon = is_daemon; | |
| 991 info_ptr->priority = priority; | |
| 992 | |
| 993 info_ptr->context_class_loader = (context_class_loader.is_null()) ? NULL : | |
| 994 jni_reference(context_class_loader); | |
| 995 info_ptr->thread_group = jni_reference(thread_group); | |
| 996 | |
| 997 return JVMTI_ERROR_NONE; | |
| 998 } /* end GetThreadInfo */ | |
| 999 | |
| 1000 | |
| 1001 // Threads_lock NOT held, java_thread not protected by lock | |
| 1002 // java_thread - pre-checked | |
| 1003 // owned_monitor_count_ptr - pre-checked for NULL | |
| 1004 // owned_monitors_ptr - pre-checked for NULL | |
| 1005 jvmtiError | |
| 1006 JvmtiEnv::GetOwnedMonitorInfo(JavaThread* java_thread, jint* owned_monitor_count_ptr, jobject** owned_monitors_ptr) { | |
| 1007 jvmtiError err = JVMTI_ERROR_NONE; | |
| 1008 JavaThread* calling_thread = JavaThread::current(); | |
| 1009 | |
| 1010 // growable array of jvmti monitors info on the C-heap | |
| 1011 GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list = | |
| 1012 new (ResourceObj::C_HEAP) GrowableArray<jvmtiMonitorStackDepthInfo*>(1, true); | |
| 1013 | |
| 1014 uint32_t debug_bits = 0; | |
| 1015 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
| 1016 err = get_owned_monitors(calling_thread, java_thread, owned_monitors_list); | |
| 1017 } else { | |
| 1018 // JVMTI get monitors info at safepoint. Do not require target thread to | |
| 1019 // be suspended. | |
| 1020 VM_GetOwnedMonitorInfo op(this, calling_thread, java_thread, owned_monitors_list); | |
| 1021 VMThread::execute(&op); | |
| 1022 err = op.result(); | |
| 1023 } | |
| 1024 jint owned_monitor_count = owned_monitors_list->length(); | |
| 1025 if (err == JVMTI_ERROR_NONE) { | |
| 1026 if ((err = allocate(owned_monitor_count * sizeof(jobject *), | |
| 1027 (unsigned char**)owned_monitors_ptr)) == JVMTI_ERROR_NONE) { | |
| 1028 // copy into the returned array | |
| 1029 for (int i = 0; i < owned_monitor_count; i++) { | |
| 1030 (*owned_monitors_ptr)[i] = | |
| 1031 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->monitor; | |
| 1032 } | |
| 1033 *owned_monitor_count_ptr = owned_monitor_count; | |
| 1034 } | |
| 1035 } | |
| 1036 // clean up. | |
| 1037 for (int i = 0; i < owned_monitor_count; i++) { | |
| 1038 deallocate((unsigned char*)owned_monitors_list->at(i)); | |
| 1039 } | |
| 1040 delete owned_monitors_list; | |
| 1041 | |
| 1042 return err; | |
| 1043 } /* end GetOwnedMonitorInfo */ | |
| 1044 | |
| 1045 | |
| 1046 // Threads_lock NOT held, java_thread not protected by lock | |
| 1047 // java_thread - pre-checked | |
| 1048 // monitor_info_count_ptr - pre-checked for NULL | |
| 1049 // monitor_info_ptr - pre-checked for NULL | |
| 1050 jvmtiError | |
| 1051 JvmtiEnv::GetOwnedMonitorStackDepthInfo(JavaThread* java_thread, jint* monitor_info_count_ptr, jvmtiMonitorStackDepthInfo** monitor_info_ptr) { | |
| 1052 jvmtiError err = JVMTI_ERROR_NONE; | |
| 1053 JavaThread* calling_thread = JavaThread::current(); | |
| 1054 | |
| 1055 // growable array of jvmti monitors info on the C-heap | |
| 1056 GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list = | |
| 1057 new (ResourceObj::C_HEAP) GrowableArray<jvmtiMonitorStackDepthInfo*>(1, true); | |
| 1058 | |
| 1059 uint32_t debug_bits = 0; | |
| 1060 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
| 1061 err = get_owned_monitors(calling_thread, java_thread, owned_monitors_list); | |
| 1062 } else { | |
| 1063 // JVMTI get owned monitors info at safepoint. Do not require target thread to | |
| 1064 // be suspended. | |
| 1065 VM_GetOwnedMonitorInfo op(this, calling_thread, java_thread, owned_monitors_list); | |
| 1066 VMThread::execute(&op); | |
| 1067 err = op.result(); | |
| 1068 } | |
| 1069 | |
| 1070 jint owned_monitor_count = owned_monitors_list->length(); | |
| 1071 if (err == JVMTI_ERROR_NONE) { | |
| 1072 if ((err = allocate(owned_monitor_count * sizeof(jvmtiMonitorStackDepthInfo), | |
| 1073 (unsigned char**)monitor_info_ptr)) == JVMTI_ERROR_NONE) { | |
| 1074 // copy to output array. | |
| 1075 for (int i = 0; i < owned_monitor_count; i++) { | |
| 1076 (*monitor_info_ptr)[i].monitor = | |
| 1077 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->monitor; | |
| 1078 (*monitor_info_ptr)[i].stack_depth = | |
| 1079 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->stack_depth; | |
| 1080 } | |
| 1081 } | |
| 1082 *monitor_info_count_ptr = owned_monitor_count; | |
| 1083 } | |
| 1084 | |
| 1085 // clean up. | |
| 1086 for (int i = 0; i < owned_monitor_count; i++) { | |
| 1087 deallocate((unsigned char*)owned_monitors_list->at(i)); | |
| 1088 } | |
| 1089 delete owned_monitors_list; | |
| 1090 | |
| 1091 return err; | |
| 1092 } /* end GetOwnedMonitorStackDepthInfo */ | |
| 1093 | |
| 1094 | |
| 1095 // Threads_lock NOT held, java_thread not protected by lock | |
| 1096 // java_thread - pre-checked | |
| 1097 // monitor_ptr - pre-checked for NULL | |
| 1098 jvmtiError | |
| 1099 JvmtiEnv::GetCurrentContendedMonitor(JavaThread* java_thread, jobject* monitor_ptr) { | |
| 1100 jvmtiError err = JVMTI_ERROR_NONE; | |
| 1101 uint32_t debug_bits = 0; | |
| 1102 JavaThread* calling_thread = JavaThread::current(); | |
| 1103 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
| 1104 err = get_current_contended_monitor(calling_thread, java_thread, monitor_ptr); | |
| 1105 } else { | |
| 1106 // get contended monitor information at safepoint. | |
| 1107 VM_GetCurrentContendedMonitor op(this, calling_thread, java_thread, monitor_ptr); | |
| 1108 VMThread::execute(&op); | |
| 1109 err = op.result(); | |
| 1110 } | |
| 1111 return err; | |
| 1112 } /* end GetCurrentContendedMonitor */ | |
| 1113 | |
| 1114 | |
| 1115 // Threads_lock NOT held | |
| 1116 // thread - NOT pre-checked | |
| 1117 // proc - pre-checked for NULL | |
| 1118 // arg - NULL is a valid value, must be checked | |
| 1119 jvmtiError | |
| 1120 JvmtiEnv::RunAgentThread(jthread thread, jvmtiStartFunction proc, const void* arg, jint priority) { | |
| 1121 oop thread_oop = JNIHandles::resolve_external_guard(thread); | |
| 1142 | 1122 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) { |
| 0 | 1123 return JVMTI_ERROR_INVALID_THREAD; |
| 1124 } | |
| 1125 if (priority < JVMTI_THREAD_MIN_PRIORITY || priority > JVMTI_THREAD_MAX_PRIORITY) { | |
| 1126 return JVMTI_ERROR_INVALID_PRIORITY; | |
| 1127 } | |
| 1128 | |
| 1129 //Thread-self | |
| 1130 JavaThread* current_thread = JavaThread::current(); | |
| 1131 | |
| 1132 Handle thread_hndl(current_thread, thread_oop); | |
| 1133 { | |
| 1134 MutexLocker mu(Threads_lock); // grab Threads_lock | |
| 1135 | |
| 1136 JvmtiAgentThread *new_thread = new JvmtiAgentThread(this, proc, arg); | |
| 1137 | |
| 1138 // At this point it may be possible that no osthread was created for the | |
| 1139 // JavaThread due to lack of memory. | |
| 1140 if (new_thread == NULL || new_thread->osthread() == NULL) { | |
| 1141 if (new_thread) delete new_thread; | |
| 1142 return JVMTI_ERROR_OUT_OF_MEMORY; | |
| 1143 } | |
| 1144 | |
| 1145 java_lang_Thread::set_thread(thread_hndl(), new_thread); | |
| 1146 java_lang_Thread::set_priority(thread_hndl(), (ThreadPriority)priority); | |
| 1147 java_lang_Thread::set_daemon(thread_hndl()); | |
| 1148 | |
| 1149 new_thread->set_threadObj(thread_hndl()); | |
| 1150 Threads::add(new_thread); | |
| 1151 Thread::start(new_thread); | |
| 1152 } // unlock Threads_lock | |
| 1153 | |
| 1154 return JVMTI_ERROR_NONE; | |
| 1155 } /* end RunAgentThread */ | |
| 1156 | |
| 1157 // | |
| 1158 // Thread Group functions | |
| 1159 // | |
| 1160 | |
| 1161 // group_count_ptr - pre-checked for NULL | |
| 1162 // groups_ptr - pre-checked for NULL | |
| 1163 jvmtiError | |
| 1164 JvmtiEnv::GetTopThreadGroups(jint* group_count_ptr, jthreadGroup** groups_ptr) { | |
| 1165 JavaThread* current_thread = JavaThread::current(); | |
| 1166 | |
| 1167 // Only one top level thread group now. | |
| 1168 *group_count_ptr = 1; | |
| 1169 | |
| 1170 // Allocate memory to store global-refs to the thread groups. | |
| 1171 // Assume this area is freed by caller. | |
| 1172 *groups_ptr = (jthreadGroup *) jvmtiMalloc((sizeof(jthreadGroup)) * (*group_count_ptr)); | |
| 1173 | |
| 1174 NULL_CHECK(*groups_ptr, JVMTI_ERROR_OUT_OF_MEMORY); | |
| 1175 | |
| 1176 // Convert oop to Handle, then convert Handle to global-ref. | |
| 1177 { | |
| 1178 HandleMark hm(current_thread); | |
| 1179 Handle system_thread_group(current_thread, Universe::system_thread_group()); | |
| 1180 *groups_ptr[0] = jni_reference(system_thread_group); | |
| 1181 } | |
| 1182 | |
| 1183 return JVMTI_ERROR_NONE; | |
| 1184 } /* end GetTopThreadGroups */ | |
| 1185 | |
| 1186 | |
| 1187 // info_ptr - pre-checked for NULL | |
| 1188 jvmtiError | |
| 1189 JvmtiEnv::GetThreadGroupInfo(jthreadGroup group, jvmtiThreadGroupInfo* info_ptr) { | |
| 1190 ResourceMark rm; | |
| 1191 HandleMark hm; | |
| 1192 | |
| 1193 JavaThread* current_thread = JavaThread::current(); | |
| 1194 | |
| 1195 Handle group_obj (current_thread, JNIHandles::resolve_external_guard(group)); | |
| 1196 NULL_CHECK(group_obj(), JVMTI_ERROR_INVALID_THREAD_GROUP); | |
| 1197 | |
| 1198 typeArrayHandle name; | |
| 1199 Handle parent_group; | |
| 1200 bool is_daemon; | |
| 1201 ThreadPriority max_priority; | |
| 1202 | |
| 1203 { MutexLocker mu(Threads_lock); | |
| 1204 | |
| 1205 name = typeArrayHandle(current_thread, | |
| 1206 java_lang_ThreadGroup::name(group_obj())); | |
| 1207 parent_group = Handle(current_thread, java_lang_ThreadGroup::parent(group_obj())); | |
| 1208 is_daemon = java_lang_ThreadGroup::is_daemon(group_obj()); | |
| 1209 max_priority = java_lang_ThreadGroup::maxPriority(group_obj()); | |
| 1210 } | |
| 1211 | |
| 1212 info_ptr->is_daemon = is_daemon; | |
| 1213 info_ptr->max_priority = max_priority; | |
| 1214 info_ptr->parent = jni_reference(parent_group); | |
| 1215 | |
| 1216 if (name() != NULL) { | |
| 1217 const char* n = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length()); | |
| 1218 info_ptr->name = (char *)jvmtiMalloc(strlen(n)+1); | |
| 1219 NULL_CHECK(info_ptr->name, JVMTI_ERROR_OUT_OF_MEMORY); | |
| 1220 strcpy(info_ptr->name, n); | |
| 1221 } else { | |
| 1222 info_ptr->name = NULL; | |
| 1223 } | |
| 1224 | |
| 1225 return JVMTI_ERROR_NONE; | |
| 1226 } /* end GetThreadGroupInfo */ | |
| 1227 | |
| 1228 | |
| 1229 // thread_count_ptr - pre-checked for NULL | |
| 1230 // threads_ptr - pre-checked for NULL | |
| 1231 // group_count_ptr - pre-checked for NULL | |
| 1232 // groups_ptr - pre-checked for NULL | |
| 1233 jvmtiError | |
| 1234 JvmtiEnv::GetThreadGroupChildren(jthreadGroup group, jint* thread_count_ptr, jthread** threads_ptr, jint* group_count_ptr, jthreadGroup** groups_ptr) { | |
| 1235 JavaThread* current_thread = JavaThread::current(); | |
| 1236 oop group_obj = (oop) JNIHandles::resolve_external_guard(group); | |
| 1237 NULL_CHECK(group_obj, JVMTI_ERROR_INVALID_THREAD_GROUP); | |
| 1238 | |
| 1239 Handle *thread_objs = NULL; | |
| 1240 Handle *group_objs = NULL; | |
| 1241 int nthreads = 0; | |
| 1242 int ngroups = 0; | |
| 1243 int hidden_threads = 0; | |
| 1244 | |
| 1245 ResourceMark rm; | |
| 1246 HandleMark hm; | |
| 1247 | |
| 1248 Handle group_hdl(current_thread, group_obj); | |
| 1249 | |
| 1250 { MutexLocker mu(Threads_lock); | |
| 1251 | |
| 1252 nthreads = java_lang_ThreadGroup::nthreads(group_hdl()); | |
| 1253 ngroups = java_lang_ThreadGroup::ngroups(group_hdl()); | |
| 1254 | |
| 1255 if (nthreads > 0) { | |
| 1256 objArrayOop threads = java_lang_ThreadGroup::threads(group_hdl()); | |
| 1257 assert(nthreads <= threads->length(), "too many threads"); | |
| 1258 thread_objs = NEW_RESOURCE_ARRAY(Handle,nthreads); | |
| 1259 for (int i=0, j=0; i<nthreads; i++) { | |
| 1260 oop thread_obj = threads->obj_at(i); | |
| 1261 assert(thread_obj != NULL, "thread_obj is NULL"); | |
| 1262 JavaThread *javathread = java_lang_Thread::thread(thread_obj); | |
| 1263 // Filter out hidden java threads. | |
| 1264 if (javathread != NULL && javathread->is_hidden_from_external_view()) { | |
| 1265 hidden_threads++; | |
| 1266 continue; | |
| 1267 } | |
| 1268 thread_objs[j++] = Handle(current_thread, thread_obj); | |
| 1269 } | |
| 1270 nthreads -= hidden_threads; | |
| 1271 } | |
| 1272 if (ngroups > 0) { | |
| 1273 objArrayOop groups = java_lang_ThreadGroup::groups(group_hdl()); | |
| 1274 assert(ngroups <= groups->length(), "too many threads"); | |
| 1275 group_objs = NEW_RESOURCE_ARRAY(Handle,ngroups); | |
| 1276 for (int i=0; i<ngroups; i++) { | |
| 1277 oop group_obj = groups->obj_at(i); | |
| 1278 assert(group_obj != NULL, "group_obj != NULL"); | |
| 1279 group_objs[i] = Handle(current_thread, group_obj); | |
| 1280 } | |
| 1281 } | |
| 1282 } | |
| 1283 | |
| 1284 // have to make global handles outside of Threads_lock | |
| 1285 *group_count_ptr = ngroups; | |
| 1286 *thread_count_ptr = nthreads; | |
| 1287 *threads_ptr = new_jthreadArray(nthreads, thread_objs); | |
| 1288 *groups_ptr = new_jthreadGroupArray(ngroups, group_objs); | |
| 1289 if ((nthreads > 0) && (*threads_ptr == NULL)) { | |
| 1290 return JVMTI_ERROR_OUT_OF_MEMORY; | |
| 1291 } | |
| 1292 if ((ngroups > 0) && (*groups_ptr == NULL)) { | |
| 1293 return JVMTI_ERROR_OUT_OF_MEMORY; | |
| 1294 } | |
| 1295 | |
| 1296 return JVMTI_ERROR_NONE; | |
| 1297 } /* end GetThreadGroupChildren */ | |
| 1298 | |
| 1299 | |
| 1300 // | |
| 1301 // Stack Frame functions | |
| 1302 // | |
| 1303 | |
| 1304 // Threads_lock NOT held, java_thread not protected by lock | |
| 1305 // java_thread - pre-checked | |
| 1306 // max_frame_count - pre-checked to be greater than or equal to 0 | |
| 1307 // frame_buffer - pre-checked for NULL | |
| 1308 // count_ptr - pre-checked for NULL | |
| 1309 jvmtiError | |
| 1310 JvmtiEnv::GetStackTrace(JavaThread* java_thread, jint start_depth, jint max_frame_count, jvmtiFrameInfo* frame_buffer, jint* count_ptr) { | |
| 1311 jvmtiError err = JVMTI_ERROR_NONE; | |
| 1312 uint32_t debug_bits = 0; | |
| 1313 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
| 1314 err = get_stack_trace(java_thread, start_depth, max_frame_count, frame_buffer, count_ptr); | |
| 1315 } else { | |
| 1316 // JVMTI get stack trace at safepoint. Do not require target thread to | |
| 1317 // be suspended. | |
| 1318 VM_GetStackTrace op(this, java_thread, start_depth, max_frame_count, frame_buffer, count_ptr); | |
| 1319 VMThread::execute(&op); | |
| 1320 err = op.result(); | |
| 1321 } | |
| 1322 | |
| 1323 return err; | |
| 1324 } /* end GetStackTrace */ | |
| 1325 | |
| 1326 | |
| 1327 // max_frame_count - pre-checked to be greater than or equal to 0 | |
| 1328 // stack_info_ptr - pre-checked for NULL | |
| 1329 // thread_count_ptr - pre-checked for NULL | |
| 1330 jvmtiError | |
| 1331 JvmtiEnv::GetAllStackTraces(jint max_frame_count, jvmtiStackInfo** stack_info_ptr, jint* thread_count_ptr) { | |
| 1332 jvmtiError err = JVMTI_ERROR_NONE; | |
| 1333 JavaThread* calling_thread = JavaThread::current(); | |
| 1334 | |
| 1335 // JVMTI get stack traces at safepoint. | |
| 1336 VM_GetAllStackTraces op(this, calling_thread, max_frame_count); | |
| 1337 VMThread::execute(&op); | |
| 1338 *thread_count_ptr = op.final_thread_count(); | |
| 1339 *stack_info_ptr = op.stack_info(); | |
| 1340 err = op.result(); | |
| 1341 return err; | |
| 1342 } /* end GetAllStackTraces */ | |
| 1343 | |
| 1344 | |
| 1345 // thread_count - pre-checked to be greater than or equal to 0 | |
| 1346 // thread_list - pre-checked for NULL | |
| 1347 // max_frame_count - pre-checked to be greater than or equal to 0 | |
| 1348 // stack_info_ptr - pre-checked for NULL | |
| 1349 jvmtiError | |
| 1350 JvmtiEnv::GetThreadListStackTraces(jint thread_count, const jthread* thread_list, jint max_frame_count, jvmtiStackInfo** stack_info_ptr) { | |
| 1351 jvmtiError err = JVMTI_ERROR_NONE; | |
| 1352 // JVMTI get stack traces at safepoint. | |
| 1353 VM_GetThreadListStackTraces op(this, thread_count, thread_list, max_frame_count); | |
| 1354 VMThread::execute(&op); | |
| 1355 err = op.result(); | |
| 1356 if (err == JVMTI_ERROR_NONE) { | |
| 1357 *stack_info_ptr = op.stack_info(); | |
| 1358 } | |
| 1359 return err; | |
| 1360 } /* end GetThreadListStackTraces */ | |
| 1361 | |
| 1362 | |
| 1363 // Threads_lock NOT held, java_thread not protected by lock | |
| 1364 // java_thread - pre-checked | |
| 1365 // count_ptr - pre-checked for NULL | |
| 1366 jvmtiError | |
| 1367 JvmtiEnv::GetFrameCount(JavaThread* java_thread, jint* count_ptr) { | |
| 1368 jvmtiError err = JVMTI_ERROR_NONE; | |
| 1369 | |
| 1370 // retrieve or create JvmtiThreadState. | |
| 1371 JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread); | |
|
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1372 if (state == NULL) { |
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1373 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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1374 } |
| 0 | 1375 uint32_t debug_bits = 0; |
| 1376 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
| 1377 err = get_frame_count(state, count_ptr); | |
| 1378 } else { | |
| 1379 // get java stack frame count at safepoint. | |
| 1380 VM_GetFrameCount op(this, state, count_ptr); | |
| 1381 VMThread::execute(&op); | |
| 1382 err = op.result(); | |
| 1383 } | |
| 1384 return err; | |
| 1385 } /* end GetFrameCount */ | |
| 1386 | |
| 1387 | |
| 1388 // Threads_lock NOT held, java_thread not protected by lock | |
| 1389 // java_thread - pre-checked | |
| 1390 jvmtiError | |
| 1391 JvmtiEnv::PopFrame(JavaThread* java_thread) { | |
| 1392 JavaThread* current_thread = JavaThread::current(); | |
| 1393 HandleMark hm(current_thread); | |
| 1394 uint32_t debug_bits = 0; | |
| 1395 | |
|
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1396 // retrieve or create the state |
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1397 JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread); |
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1398 if (state == NULL) { |
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1399 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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1400 } |
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1401 |
| 0 | 1402 // Check if java_thread is fully suspended |
| 1403 if (!is_thread_fully_suspended(java_thread, true /* wait for suspend completion */, &debug_bits)) { | |
| 1404 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
| 1405 } | |
| 1406 // Check to see if a PopFrame was already in progress | |
| 1407 if (java_thread->popframe_condition() != JavaThread::popframe_inactive) { | |
| 1408 // Probably possible for JVMTI clients to trigger this, but the | |
| 1409 // JPDA backend shouldn't allow this to happen | |
| 1410 return JVMTI_ERROR_INTERNAL; | |
| 1411 } | |
| 1412 | |
| 1413 { | |
| 1414 // Was workaround bug | |
| 1415 // 4812902: popFrame hangs if the method is waiting at a synchronize | |
| 1416 // Catch this condition and return an error to avoid hanging. | |
| 1417 // Now JVMTI spec allows an implementation to bail out with an opaque frame error. | |
| 1418 OSThread* osThread = java_thread->osthread(); | |
| 1419 if (osThread->get_state() == MONITOR_WAIT) { | |
| 1420 return JVMTI_ERROR_OPAQUE_FRAME; | |
| 1421 } | |
| 1422 } | |
| 1423 | |
| 1424 { | |
| 1425 ResourceMark rm(current_thread); | |
| 1426 // Check if there are more than one Java frame in this thread, that the top two frames | |
| 1427 // are Java (not native) frames, and that there is no intervening VM frame | |
| 1428 int frame_count = 0; | |
| 1429 bool is_interpreted[2]; | |
| 1430 intptr_t *frame_sp[2]; | |
| 1431 // The 2-nd arg of constructor is needed to stop iterating at java entry frame. | |
| 1432 for (vframeStream vfs(java_thread, true); !vfs.at_end(); vfs.next()) { | |
| 1433 methodHandle mh(current_thread, vfs.method()); | |
| 1434 if (mh->is_native()) return(JVMTI_ERROR_OPAQUE_FRAME); | |
| 1435 is_interpreted[frame_count] = vfs.is_interpreted_frame(); | |
| 1436 frame_sp[frame_count] = vfs.frame_id(); | |
| 1437 if (++frame_count > 1) break; | |
| 1438 } | |
| 1439 if (frame_count < 2) { | |
| 1440 // We haven't found two adjacent non-native Java frames on the top. | |
| 1441 // There can be two situations here: | |
| 1442 // 1. There are no more java frames | |
| 1443 // 2. Two top java frames are separated by non-java native frames | |
| 1444 if(vframeFor(java_thread, 1) == NULL) { | |
| 1445 return JVMTI_ERROR_NO_MORE_FRAMES; | |
| 1446 } else { | |
| 1447 // Intervening non-java native or VM frames separate java frames. | |
| 1448 // Current implementation does not support this. See bug #5031735. | |
| 1449 // In theory it is possible to pop frames in such cases. | |
| 1450 return JVMTI_ERROR_OPAQUE_FRAME; | |
| 1451 } | |
| 1452 } | |
| 1453 | |
| 1454 // If any of the top 2 frames is a compiled one, need to deoptimize it | |
| 1455 for (int i = 0; i < 2; i++) { | |
| 1456 if (!is_interpreted[i]) { | |
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1457 Deoptimization::deoptimize_frame(java_thread, frame_sp[i]); |
| 0 | 1458 } |
| 1459 } | |
| 1460 | |
| 1461 // Update the thread state to reflect that the top frame is popped | |
| 1462 // so that cur_stack_depth is maintained properly and all frameIDs | |
| 1463 // are invalidated. | |
| 1464 // The current frame will be popped later when the suspended thread | |
| 1465 // is resumed and right before returning from VM to Java. | |
| 1466 // (see call_VM_base() in assembler_<cpu>.cpp). | |
| 1467 | |
| 1468 // It's fine to update the thread state here because no JVMTI events | |
| 1469 // shall be posted for this PopFrame. | |
| 1470 | |
| 1471 state->update_for_pop_top_frame(); | |
| 1472 java_thread->set_popframe_condition(JavaThread::popframe_pending_bit); | |
| 1473 // Set pending step flag for this popframe and it is cleared when next | |
| 1474 // step event is posted. | |
| 1475 state->set_pending_step_for_popframe(); | |
| 1476 } | |
| 1477 | |
| 1478 return JVMTI_ERROR_NONE; | |
| 1479 } /* end PopFrame */ | |
| 1480 | |
| 1481 | |
| 1482 // Threads_lock NOT held, java_thread not protected by lock | |
| 1483 // java_thread - pre-checked | |
| 1484 // java_thread - unchecked | |
| 1485 // depth - pre-checked as non-negative | |
| 1486 // method_ptr - pre-checked for NULL | |
| 1487 // location_ptr - pre-checked for NULL | |
| 1488 jvmtiError | |
| 1489 JvmtiEnv::GetFrameLocation(JavaThread* java_thread, jint depth, jmethodID* method_ptr, jlocation* location_ptr) { | |
| 1490 jvmtiError err = JVMTI_ERROR_NONE; | |
| 1491 uint32_t debug_bits = 0; | |
| 1492 | |
| 1493 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
| 1494 err = get_frame_location(java_thread, depth, method_ptr, location_ptr); | |
| 1495 } else { | |
| 1496 // JVMTI get java stack frame location at safepoint. | |
| 1497 VM_GetFrameLocation op(this, java_thread, depth, method_ptr, location_ptr); | |
| 1498 VMThread::execute(&op); | |
| 1499 err = op.result(); | |
| 1500 } | |
| 1501 return err; | |
| 1502 } /* end GetFrameLocation */ | |
| 1503 | |
| 1504 | |
| 1505 // Threads_lock NOT held, java_thread not protected by lock | |
| 1506 // java_thread - pre-checked | |
| 1507 // java_thread - unchecked | |
| 1508 // depth - pre-checked as non-negative | |
| 1509 jvmtiError | |
| 1510 JvmtiEnv::NotifyFramePop(JavaThread* java_thread, jint depth) { | |
| 1511 ResourceMark rm; | |
| 1512 uint32_t debug_bits = 0; | |
| 1513 | |
|
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1514 JvmtiThreadState *state = JvmtiThreadState::state_for(java_thread); |
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1515 if (state == NULL) { |
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1516 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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1517 } |
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1518 |
| 0 | 1519 if (!JvmtiEnv::is_thread_fully_suspended(java_thread, true, &debug_bits)) { |
| 1520 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
| 1521 } | |
| 1522 | |
| 1523 if (TraceJVMTICalls) { | |
| 1524 JvmtiSuspendControl::print(); | |
| 1525 } | |
| 1526 | |
| 1527 vframe *vf = vframeFor(java_thread, depth); | |
| 1528 if (vf == NULL) { | |
| 1529 return JVMTI_ERROR_NO_MORE_FRAMES; | |
| 1530 } | |
| 1531 | |
| 1532 if (!vf->is_java_frame() || ((javaVFrame*) vf)->method()->is_native()) { | |
| 1533 return JVMTI_ERROR_OPAQUE_FRAME; | |
| 1534 } | |
| 1535 | |
| 1536 assert(vf->frame_pointer() != NULL, "frame pointer mustn't be NULL"); | |
| 1537 | |
| 1538 int frame_number = state->count_frames() - depth; | |
| 1539 state->env_thread_state(this)->set_frame_pop(frame_number); | |
| 1540 | |
| 1541 return JVMTI_ERROR_NONE; | |
| 1542 } /* end NotifyFramePop */ | |
| 1543 | |
| 1544 | |
| 1545 // | |
| 1546 // Force Early Return functions | |
| 1547 // | |
| 1548 | |
| 1549 // Threads_lock NOT held, java_thread not protected by lock | |
| 1550 // java_thread - pre-checked | |
| 1551 jvmtiError | |
| 1552 JvmtiEnv::ForceEarlyReturnObject(JavaThread* java_thread, jobject value) { | |
| 1553 jvalue val; | |
| 1554 val.l = value; | |
| 1555 return force_early_return(java_thread, val, atos); | |
| 1556 } /* end ForceEarlyReturnObject */ | |
| 1557 | |
| 1558 | |
| 1559 // Threads_lock NOT held, java_thread not protected by lock | |
| 1560 // java_thread - pre-checked | |
| 1561 jvmtiError | |
| 1562 JvmtiEnv::ForceEarlyReturnInt(JavaThread* java_thread, jint value) { | |
| 1563 jvalue val; | |
| 1564 val.i = value; | |
| 1565 return force_early_return(java_thread, val, itos); | |
| 1566 } /* end ForceEarlyReturnInt */ | |
| 1567 | |
| 1568 | |
| 1569 // Threads_lock NOT held, java_thread not protected by lock | |
| 1570 // java_thread - pre-checked | |
| 1571 jvmtiError | |
| 1572 JvmtiEnv::ForceEarlyReturnLong(JavaThread* java_thread, jlong value) { | |
| 1573 jvalue val; | |
| 1574 val.j = value; | |
| 1575 return force_early_return(java_thread, val, ltos); | |
| 1576 } /* end ForceEarlyReturnLong */ | |
| 1577 | |
| 1578 | |
| 1579 // Threads_lock NOT held, java_thread not protected by lock | |
| 1580 // java_thread - pre-checked | |
| 1581 jvmtiError | |
| 1582 JvmtiEnv::ForceEarlyReturnFloat(JavaThread* java_thread, jfloat value) { | |
| 1583 jvalue val; | |
| 1584 val.f = value; | |
| 1585 return force_early_return(java_thread, val, ftos); | |
| 1586 } /* end ForceEarlyReturnFloat */ | |
| 1587 | |
| 1588 | |
| 1589 // Threads_lock NOT held, java_thread not protected by lock | |
| 1590 // java_thread - pre-checked | |
| 1591 jvmtiError | |
| 1592 JvmtiEnv::ForceEarlyReturnDouble(JavaThread* java_thread, jdouble value) { | |
| 1593 jvalue val; | |
| 1594 val.d = value; | |
| 1595 return force_early_return(java_thread, val, dtos); | |
| 1596 } /* end ForceEarlyReturnDouble */ | |
| 1597 | |
| 1598 | |
| 1599 // Threads_lock NOT held, java_thread not protected by lock | |
| 1600 // java_thread - pre-checked | |
| 1601 jvmtiError | |
| 1602 JvmtiEnv::ForceEarlyReturnVoid(JavaThread* java_thread) { | |
| 1603 jvalue val; | |
| 1604 val.j = 0L; | |
| 1605 return force_early_return(java_thread, val, vtos); | |
| 1606 } /* end ForceEarlyReturnVoid */ | |
| 1607 | |
| 1608 | |
| 1609 // | |
| 1610 // Heap functions | |
| 1611 // | |
| 1612 | |
| 1613 // klass - NULL is a valid value, must be checked | |
| 1614 // initial_object - NULL is a valid value, must be checked | |
| 1615 // callbacks - pre-checked for NULL | |
| 1616 // user_data - NULL is a valid value, must be checked | |
| 1617 jvmtiError | |
| 1618 JvmtiEnv::FollowReferences(jint heap_filter, jclass klass, jobject initial_object, const jvmtiHeapCallbacks* callbacks, const void* user_data) { | |
| 1619 // check klass if provided | |
| 1620 klassOop k_oop = NULL; | |
| 1621 if (klass != NULL) { | |
| 1622 oop k_mirror = JNIHandles::resolve_external_guard(klass); | |
| 1623 if (k_mirror == NULL) { | |
| 1624 return JVMTI_ERROR_INVALID_CLASS; | |
| 1625 } | |
| 1626 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 1627 return JVMTI_ERROR_NONE; | |
| 1628 } | |
| 1629 k_oop = java_lang_Class::as_klassOop(k_mirror); | |
| 1630 if (k_oop == NULL) { | |
| 1631 return JVMTI_ERROR_INVALID_CLASS; | |
| 1632 } | |
| 1633 } | |
| 1634 | |
| 1635 Thread *thread = Thread::current(); | |
| 1636 HandleMark hm(thread); | |
| 1637 KlassHandle kh (thread, k_oop); | |
| 1638 | |
| 1639 TraceTime t("FollowReferences", TraceJVMTIObjectTagging); | |
| 1640 JvmtiTagMap::tag_map_for(this)->follow_references(heap_filter, kh, initial_object, callbacks, user_data); | |
| 1641 return JVMTI_ERROR_NONE; | |
| 1642 } /* end FollowReferences */ | |
| 1643 | |
| 1644 | |
| 1645 // klass - NULL is a valid value, must be checked | |
| 1646 // callbacks - pre-checked for NULL | |
| 1647 // user_data - NULL is a valid value, must be checked | |
| 1648 jvmtiError | |
| 1649 JvmtiEnv::IterateThroughHeap(jint heap_filter, jclass klass, const jvmtiHeapCallbacks* callbacks, const void* user_data) { | |
| 1650 // check klass if provided | |
| 1651 klassOop k_oop = NULL; | |
| 1652 if (klass != NULL) { | |
| 1653 oop k_mirror = JNIHandles::resolve_external_guard(klass); | |
| 1654 if (k_mirror == NULL) { | |
| 1655 return JVMTI_ERROR_INVALID_CLASS; | |
| 1656 } | |
| 1657 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 1658 return JVMTI_ERROR_NONE; | |
| 1659 } | |
| 1660 k_oop = java_lang_Class::as_klassOop(k_mirror); | |
| 1661 if (k_oop == NULL) { | |
| 1662 return JVMTI_ERROR_INVALID_CLASS; | |
| 1663 } | |
| 1664 } | |
| 1665 | |
| 1666 Thread *thread = Thread::current(); | |
| 1667 HandleMark hm(thread); | |
| 1668 KlassHandle kh (thread, k_oop); | |
| 1669 | |
| 1670 TraceTime t("IterateThroughHeap", TraceJVMTIObjectTagging); | |
| 1671 JvmtiTagMap::tag_map_for(this)->iterate_through_heap(heap_filter, kh, callbacks, user_data); | |
| 1672 return JVMTI_ERROR_NONE; | |
| 1673 } /* end IterateThroughHeap */ | |
| 1674 | |
| 1675 | |
| 1676 // tag_ptr - pre-checked for NULL | |
| 1677 jvmtiError | |
| 1678 JvmtiEnv::GetTag(jobject object, jlong* tag_ptr) { | |
| 1679 oop o = JNIHandles::resolve_external_guard(object); | |
| 1680 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
| 1681 *tag_ptr = JvmtiTagMap::tag_map_for(this)->get_tag(object); | |
| 1682 return JVMTI_ERROR_NONE; | |
| 1683 } /* end GetTag */ | |
| 1684 | |
| 1685 | |
| 1686 jvmtiError | |
| 1687 JvmtiEnv::SetTag(jobject object, jlong tag) { | |
| 1688 oop o = JNIHandles::resolve_external_guard(object); | |
| 1689 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
| 1690 JvmtiTagMap::tag_map_for(this)->set_tag(object, tag); | |
| 1691 return JVMTI_ERROR_NONE; | |
| 1692 } /* end SetTag */ | |
| 1693 | |
| 1694 | |
| 1695 // tag_count - pre-checked to be greater than or equal to 0 | |
| 1696 // tags - pre-checked for NULL | |
| 1697 // count_ptr - pre-checked for NULL | |
| 1698 // object_result_ptr - NULL is a valid value, must be checked | |
| 1699 // tag_result_ptr - NULL is a valid value, must be checked | |
| 1700 jvmtiError | |
| 1701 JvmtiEnv::GetObjectsWithTags(jint tag_count, const jlong* tags, jint* count_ptr, jobject** object_result_ptr, jlong** tag_result_ptr) { | |
| 1702 TraceTime t("GetObjectsWithTags", TraceJVMTIObjectTagging); | |
| 1703 return JvmtiTagMap::tag_map_for(this)->get_objects_with_tags((jlong*)tags, tag_count, count_ptr, object_result_ptr, tag_result_ptr); | |
| 1704 } /* end GetObjectsWithTags */ | |
| 1705 | |
| 1706 | |
| 1707 jvmtiError | |
| 1708 JvmtiEnv::ForceGarbageCollection() { | |
| 1709 Universe::heap()->collect(GCCause::_jvmti_force_gc); | |
| 1710 return JVMTI_ERROR_NONE; | |
| 1711 } /* end ForceGarbageCollection */ | |
| 1712 | |
| 1713 | |
| 1714 // | |
| 1715 // Heap (1.0) functions | |
| 1716 // | |
| 1717 | |
| 1718 // object_reference_callback - pre-checked for NULL | |
| 1719 // user_data - NULL is a valid value, must be checked | |
| 1720 jvmtiError | |
| 1721 JvmtiEnv::IterateOverObjectsReachableFromObject(jobject object, jvmtiObjectReferenceCallback object_reference_callback, const void* user_data) { | |
| 1722 oop o = JNIHandles::resolve_external_guard(object); | |
| 1723 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
| 1724 JvmtiTagMap::tag_map_for(this)->iterate_over_objects_reachable_from_object(object, object_reference_callback, user_data); | |
| 1725 return JVMTI_ERROR_NONE; | |
| 1726 } /* end IterateOverObjectsReachableFromObject */ | |
| 1727 | |
| 1728 | |
| 1729 // heap_root_callback - NULL is a valid value, must be checked | |
| 1730 // stack_ref_callback - NULL is a valid value, must be checked | |
| 1731 // object_ref_callback - NULL is a valid value, must be checked | |
| 1732 // user_data - NULL is a valid value, must be checked | |
| 1733 jvmtiError | |
| 1734 JvmtiEnv::IterateOverReachableObjects(jvmtiHeapRootCallback heap_root_callback, jvmtiStackReferenceCallback stack_ref_callback, jvmtiObjectReferenceCallback object_ref_callback, const void* user_data) { | |
| 1735 TraceTime t("IterateOverReachableObjects", TraceJVMTIObjectTagging); | |
| 1736 JvmtiTagMap::tag_map_for(this)->iterate_over_reachable_objects(heap_root_callback, stack_ref_callback, object_ref_callback, user_data); | |
| 1737 return JVMTI_ERROR_NONE; | |
| 1738 } /* end IterateOverReachableObjects */ | |
| 1739 | |
| 1740 | |
| 1741 // heap_object_callback - pre-checked for NULL | |
| 1742 // user_data - NULL is a valid value, must be checked | |
| 1743 jvmtiError | |
| 1744 JvmtiEnv::IterateOverHeap(jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) { | |
| 1745 TraceTime t("IterateOverHeap", TraceJVMTIObjectTagging); | |
| 1746 Thread *thread = Thread::current(); | |
| 1747 HandleMark hm(thread); | |
| 1748 JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, KlassHandle(), heap_object_callback, user_data); | |
| 1749 return JVMTI_ERROR_NONE; | |
| 1750 } /* end IterateOverHeap */ | |
| 1751 | |
| 1752 | |
| 1753 // k_mirror - may be primitive, this must be checked | |
| 1754 // heap_object_callback - pre-checked for NULL | |
| 1755 // user_data - NULL is a valid value, must be checked | |
| 1756 jvmtiError | |
| 1757 JvmtiEnv::IterateOverInstancesOfClass(oop k_mirror, jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) { | |
| 1758 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 1759 // DO PRIMITIVE CLASS PROCESSING | |
| 1760 return JVMTI_ERROR_NONE; | |
| 1761 } | |
| 1762 klassOop k_oop = java_lang_Class::as_klassOop(k_mirror); | |
| 1763 if (k_oop == NULL) { | |
| 1764 return JVMTI_ERROR_INVALID_CLASS; | |
| 1765 } | |
| 1766 Thread *thread = Thread::current(); | |
| 1767 HandleMark hm(thread); | |
| 1768 KlassHandle klass (thread, k_oop); | |
| 1769 TraceTime t("IterateOverInstancesOfClass", TraceJVMTIObjectTagging); | |
| 1770 JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, klass, heap_object_callback, user_data); | |
| 1771 return JVMTI_ERROR_NONE; | |
| 1772 } /* end IterateOverInstancesOfClass */ | |
| 1773 | |
| 1774 | |
| 1775 // | |
| 1776 // Local Variable functions | |
| 1777 // | |
| 1778 | |
| 1779 // Threads_lock NOT held, java_thread not protected by lock | |
| 1780 // java_thread - pre-checked | |
| 1781 // java_thread - unchecked | |
| 1782 // depth - pre-checked as non-negative | |
| 1783 // value_ptr - pre-checked for NULL | |
| 1784 jvmtiError | |
| 1785 JvmtiEnv::GetLocalObject(JavaThread* java_thread, jint depth, jint slot, jobject* value_ptr) { | |
| 1786 JavaThread* current_thread = JavaThread::current(); | |
| 1787 // rm object is created to clean up the javaVFrame created in | |
| 1788 // doit_prologue(), but after doit() is finished with it. | |
| 1789 ResourceMark rm(current_thread); | |
| 1790 | |
| 1791 VM_GetOrSetLocal op(java_thread, current_thread, depth, slot); | |
| 1792 VMThread::execute(&op); | |
| 1793 jvmtiError err = op.result(); | |
| 1794 if (err != JVMTI_ERROR_NONE) { | |
| 1795 return err; | |
| 1796 } else { | |
| 1797 *value_ptr = op.value().l; | |
| 1798 return JVMTI_ERROR_NONE; | |
| 1799 } | |
| 1800 } /* end GetLocalObject */ | |
| 1801 | |
| 2019 | 1802 // Threads_lock NOT held, java_thread not protected by lock |
| 1803 // java_thread - pre-checked | |
| 1804 // java_thread - unchecked | |
| 1805 // depth - pre-checked as non-negative | |
| 1806 // value - pre-checked for NULL | |
| 1807 jvmtiError | |
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1808 JvmtiEnv::GetLocalInstance(JavaThread* java_thread, jint depth, jobject* value_ptr){ |
| 2019 | 1809 JavaThread* current_thread = JavaThread::current(); |
| 1810 // rm object is created to clean up the javaVFrame created in | |
| 1811 // doit_prologue(), but after doit() is finished with it. | |
| 1812 ResourceMark rm(current_thread); | |
| 1813 | |
| 1814 VM_GetReceiver op(java_thread, current_thread, depth); | |
| 1815 VMThread::execute(&op); | |
| 1816 jvmtiError err = op.result(); | |
| 1817 if (err != JVMTI_ERROR_NONE) { | |
| 1818 return err; | |
| 1819 } else { | |
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1820 *value_ptr = op.value().l; |
| 2019 | 1821 return JVMTI_ERROR_NONE; |
| 1822 } | |
| 1823 } /* end GetLocalInstance */ | |
| 1824 | |
| 0 | 1825 |
| 1826 // Threads_lock NOT held, java_thread not protected by lock | |
| 1827 // java_thread - pre-checked | |
| 1828 // java_thread - unchecked | |
| 1829 // depth - pre-checked as non-negative | |
| 1830 // value_ptr - pre-checked for NULL | |
| 1831 jvmtiError | |
| 1832 JvmtiEnv::GetLocalInt(JavaThread* java_thread, jint depth, jint slot, jint* value_ptr) { | |
| 1833 // rm object is created to clean up the javaVFrame created in | |
| 1834 // doit_prologue(), but after doit() is finished with it. | |
| 1835 ResourceMark rm; | |
| 1836 | |
| 1837 VM_GetOrSetLocal op(java_thread, depth, slot, T_INT); | |
| 1838 VMThread::execute(&op); | |
| 1839 *value_ptr = op.value().i; | |
| 1840 return op.result(); | |
| 1841 } /* end GetLocalInt */ | |
| 1842 | |
| 1843 | |
| 1844 // Threads_lock NOT held, java_thread not protected by lock | |
| 1845 // java_thread - pre-checked | |
| 1846 // java_thread - unchecked | |
| 1847 // depth - pre-checked as non-negative | |
| 1848 // value_ptr - pre-checked for NULL | |
| 1849 jvmtiError | |
| 1850 JvmtiEnv::GetLocalLong(JavaThread* java_thread, jint depth, jint slot, jlong* value_ptr) { | |
| 1851 // rm object is created to clean up the javaVFrame created in | |
| 1852 // doit_prologue(), but after doit() is finished with it. | |
| 1853 ResourceMark rm; | |
| 1854 | |
| 1855 VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG); | |
| 1856 VMThread::execute(&op); | |
| 1857 *value_ptr = op.value().j; | |
| 1858 return op.result(); | |
| 1859 } /* end GetLocalLong */ | |
| 1860 | |
| 1861 | |
| 1862 // Threads_lock NOT held, java_thread not protected by lock | |
| 1863 // java_thread - pre-checked | |
| 1864 // java_thread - unchecked | |
| 1865 // depth - pre-checked as non-negative | |
| 1866 // value_ptr - pre-checked for NULL | |
| 1867 jvmtiError | |
| 1868 JvmtiEnv::GetLocalFloat(JavaThread* java_thread, jint depth, jint slot, jfloat* value_ptr) { | |
| 1869 // rm object is created to clean up the javaVFrame created in | |
| 1870 // doit_prologue(), but after doit() is finished with it. | |
| 1871 ResourceMark rm; | |
| 1872 | |
| 1873 VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT); | |
| 1874 VMThread::execute(&op); | |
| 1875 *value_ptr = op.value().f; | |
| 1876 return op.result(); | |
| 1877 } /* end GetLocalFloat */ | |
| 1878 | |
| 1879 | |
| 1880 // Threads_lock NOT held, java_thread not protected by lock | |
| 1881 // java_thread - pre-checked | |
| 1882 // java_thread - unchecked | |
| 1883 // depth - pre-checked as non-negative | |
| 1884 // value_ptr - pre-checked for NULL | |
| 1885 jvmtiError | |
| 1886 JvmtiEnv::GetLocalDouble(JavaThread* java_thread, jint depth, jint slot, jdouble* value_ptr) { | |
| 1887 // rm object is created to clean up the javaVFrame created in | |
| 1888 // doit_prologue(), but after doit() is finished with it. | |
| 1889 ResourceMark rm; | |
| 1890 | |
| 1891 VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE); | |
| 1892 VMThread::execute(&op); | |
| 1893 *value_ptr = op.value().d; | |
| 1894 return op.result(); | |
| 1895 } /* end GetLocalDouble */ | |
| 1896 | |
| 1897 | |
| 1898 // Threads_lock NOT held, java_thread not protected by lock | |
| 1899 // java_thread - pre-checked | |
| 1900 // java_thread - unchecked | |
| 1901 // depth - pre-checked as non-negative | |
| 1902 jvmtiError | |
| 1903 JvmtiEnv::SetLocalObject(JavaThread* java_thread, jint depth, jint slot, jobject value) { | |
| 1904 // rm object is created to clean up the javaVFrame created in | |
| 1905 // doit_prologue(), but after doit() is finished with it. | |
| 1906 ResourceMark rm; | |
| 1907 jvalue val; | |
| 1908 val.l = value; | |
| 1909 VM_GetOrSetLocal op(java_thread, depth, slot, T_OBJECT, val); | |
| 1910 VMThread::execute(&op); | |
| 1911 return op.result(); | |
| 1912 } /* end SetLocalObject */ | |
| 1913 | |
| 1914 | |
| 1915 // Threads_lock NOT held, java_thread not protected by lock | |
| 1916 // java_thread - pre-checked | |
| 1917 // java_thread - unchecked | |
| 1918 // depth - pre-checked as non-negative | |
| 1919 jvmtiError | |
| 1920 JvmtiEnv::SetLocalInt(JavaThread* java_thread, jint depth, jint slot, jint value) { | |
| 1921 // rm object is created to clean up the javaVFrame created in | |
| 1922 // doit_prologue(), but after doit() is finished with it. | |
| 1923 ResourceMark rm; | |
| 1924 jvalue val; | |
| 1925 val.i = value; | |
| 1926 VM_GetOrSetLocal op(java_thread, depth, slot, T_INT, val); | |
| 1927 VMThread::execute(&op); | |
| 1928 return op.result(); | |
| 1929 } /* end SetLocalInt */ | |
| 1930 | |
| 1931 | |
| 1932 // Threads_lock NOT held, java_thread not protected by lock | |
| 1933 // java_thread - pre-checked | |
| 1934 // java_thread - unchecked | |
| 1935 // depth - pre-checked as non-negative | |
| 1936 jvmtiError | |
| 1937 JvmtiEnv::SetLocalLong(JavaThread* java_thread, jint depth, jint slot, jlong value) { | |
| 1938 // rm object is created to clean up the javaVFrame created in | |
| 1939 // doit_prologue(), but after doit() is finished with it. | |
| 1940 ResourceMark rm; | |
| 1941 jvalue val; | |
| 1942 val.j = value; | |
| 1943 VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG, val); | |
| 1944 VMThread::execute(&op); | |
| 1945 return op.result(); | |
| 1946 } /* end SetLocalLong */ | |
| 1947 | |
| 1948 | |
| 1949 // Threads_lock NOT held, java_thread not protected by lock | |
| 1950 // java_thread - pre-checked | |
| 1951 // java_thread - unchecked | |
| 1952 // depth - pre-checked as non-negative | |
| 1953 jvmtiError | |
| 1954 JvmtiEnv::SetLocalFloat(JavaThread* java_thread, jint depth, jint slot, jfloat value) { | |
| 1955 // rm object is created to clean up the javaVFrame created in | |
| 1956 // doit_prologue(), but after doit() is finished with it. | |
| 1957 ResourceMark rm; | |
| 1958 jvalue val; | |
| 1959 val.f = value; | |
| 1960 VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT, val); | |
| 1961 VMThread::execute(&op); | |
| 1962 return op.result(); | |
| 1963 } /* end SetLocalFloat */ | |
| 1964 | |
| 1965 | |
| 1966 // Threads_lock NOT held, java_thread not protected by lock | |
| 1967 // java_thread - pre-checked | |
| 1968 // java_thread - unchecked | |
| 1969 // depth - pre-checked as non-negative | |
| 1970 jvmtiError | |
| 1971 JvmtiEnv::SetLocalDouble(JavaThread* java_thread, jint depth, jint slot, jdouble value) { | |
| 1972 // rm object is created to clean up the javaVFrame created in | |
| 1973 // doit_prologue(), but after doit() is finished with it. | |
| 1974 ResourceMark rm; | |
| 1975 jvalue val; | |
| 1976 val.d = value; | |
| 1977 VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE, val); | |
| 1978 VMThread::execute(&op); | |
| 1979 return op.result(); | |
| 1980 } /* end SetLocalDouble */ | |
| 1981 | |
| 1982 | |
| 1983 // | |
| 1984 // Breakpoint functions | |
| 1985 // | |
| 1986 | |
| 1987 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 1988 jvmtiError | |
| 1989 JvmtiEnv::SetBreakpoint(methodOop method_oop, jlocation location) { | |
| 1990 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 1991 if (location < 0) { // simple invalid location check first | |
| 1992 return JVMTI_ERROR_INVALID_LOCATION; | |
| 1993 } | |
| 1994 // verify that the breakpoint is not past the end of the method | |
| 1995 if (location >= (jlocation) method_oop->code_size()) { | |
| 1996 return JVMTI_ERROR_INVALID_LOCATION; | |
| 1997 } | |
| 1998 | |
| 1999 ResourceMark rm; | |
| 2000 JvmtiBreakpoint bp(method_oop, location); | |
| 2001 JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints(); | |
| 2002 if (jvmti_breakpoints.set(bp) == JVMTI_ERROR_DUPLICATE) | |
| 2003 return JVMTI_ERROR_DUPLICATE; | |
| 2004 | |
| 2005 if (TraceJVMTICalls) { | |
| 2006 jvmti_breakpoints.print(); | |
| 2007 } | |
| 2008 | |
| 2009 return JVMTI_ERROR_NONE; | |
| 2010 } /* end SetBreakpoint */ | |
| 2011 | |
| 2012 | |
| 2013 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2014 jvmtiError | |
| 2015 JvmtiEnv::ClearBreakpoint(methodOop method_oop, jlocation location) { | |
| 2016 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2017 | |
| 2018 if (location < 0) { // simple invalid location check first | |
| 2019 return JVMTI_ERROR_INVALID_LOCATION; | |
| 2020 } | |
| 2021 | |
| 2022 // verify that the breakpoint is not past the end of the method | |
| 2023 if (location >= (jlocation) method_oop->code_size()) { | |
| 2024 return JVMTI_ERROR_INVALID_LOCATION; | |
| 2025 } | |
| 2026 | |
| 2027 JvmtiBreakpoint bp(method_oop, location); | |
| 2028 | |
| 2029 JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints(); | |
| 2030 if (jvmti_breakpoints.clear(bp) == JVMTI_ERROR_NOT_FOUND) | |
| 2031 return JVMTI_ERROR_NOT_FOUND; | |
| 2032 | |
| 2033 if (TraceJVMTICalls) { | |
| 2034 jvmti_breakpoints.print(); | |
| 2035 } | |
| 2036 | |
| 2037 return JVMTI_ERROR_NONE; | |
| 2038 } /* end ClearBreakpoint */ | |
| 2039 | |
| 2040 | |
| 2041 // | |
| 2042 // Watched Field functions | |
| 2043 // | |
| 2044 | |
| 2045 jvmtiError | |
| 2046 JvmtiEnv::SetFieldAccessWatch(fieldDescriptor* fdesc_ptr) { | |
| 2047 // make sure we haven't set this watch before | |
| 2048 if (fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_DUPLICATE; | |
| 2049 fdesc_ptr->set_is_field_access_watched(true); | |
| 2050 | |
| 2051 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, true); | |
| 2052 | |
| 2053 return JVMTI_ERROR_NONE; | |
| 2054 } /* end SetFieldAccessWatch */ | |
| 2055 | |
| 2056 | |
| 2057 jvmtiError | |
| 2058 JvmtiEnv::ClearFieldAccessWatch(fieldDescriptor* fdesc_ptr) { | |
| 2059 // make sure we have a watch to clear | |
| 2060 if (!fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_NOT_FOUND; | |
| 2061 fdesc_ptr->set_is_field_access_watched(false); | |
| 2062 | |
| 2063 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, false); | |
| 2064 | |
| 2065 return JVMTI_ERROR_NONE; | |
| 2066 } /* end ClearFieldAccessWatch */ | |
| 2067 | |
| 2068 | |
| 2069 jvmtiError | |
| 2070 JvmtiEnv::SetFieldModificationWatch(fieldDescriptor* fdesc_ptr) { | |
| 2071 // make sure we haven't set this watch before | |
| 2072 if (fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_DUPLICATE; | |
| 2073 fdesc_ptr->set_is_field_modification_watched(true); | |
| 2074 | |
| 2075 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, true); | |
| 2076 | |
| 2077 return JVMTI_ERROR_NONE; | |
| 2078 } /* end SetFieldModificationWatch */ | |
| 2079 | |
| 2080 | |
| 2081 jvmtiError | |
| 2082 JvmtiEnv::ClearFieldModificationWatch(fieldDescriptor* fdesc_ptr) { | |
| 2083 // make sure we have a watch to clear | |
| 2084 if (!fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_NOT_FOUND; | |
| 2085 fdesc_ptr->set_is_field_modification_watched(false); | |
| 2086 | |
| 2087 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, false); | |
| 2088 | |
| 2089 return JVMTI_ERROR_NONE; | |
| 2090 } /* end ClearFieldModificationWatch */ | |
| 2091 | |
| 2092 // | |
| 2093 // Class functions | |
| 2094 // | |
| 2095 | |
| 2096 | |
| 2097 // k_mirror - may be primitive, this must be checked | |
| 2098 // signature_ptr - NULL is a valid value, must be checked | |
| 2099 // generic_ptr - NULL is a valid value, must be checked | |
| 2100 jvmtiError | |
| 2101 JvmtiEnv::GetClassSignature(oop k_mirror, char** signature_ptr, char** generic_ptr) { | |
| 2102 ResourceMark rm; | |
| 2103 bool isPrimitive = java_lang_Class::is_primitive(k_mirror); | |
| 2104 klassOop k = NULL; | |
| 2105 if (!isPrimitive) { | |
| 2106 k = java_lang_Class::as_klassOop(k_mirror); | |
| 2107 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
| 2108 } | |
| 2109 if (signature_ptr != NULL) { | |
| 2110 char* result = NULL; | |
| 2111 if (isPrimitive) { | |
| 2112 char tchar = type2char(java_lang_Class::primitive_type(k_mirror)); | |
| 2113 result = (char*) jvmtiMalloc(2); | |
| 2114 result[0] = tchar; | |
| 2115 result[1] = '\0'; | |
| 2116 } else { | |
| 2117 const char* class_sig = Klass::cast(k)->signature_name(); | |
| 2118 result = (char *) jvmtiMalloc(strlen(class_sig)+1); | |
| 2119 strcpy(result, class_sig); | |
| 2120 } | |
| 2121 *signature_ptr = result; | |
| 2122 } | |
| 2123 if (generic_ptr != NULL) { | |
| 2124 *generic_ptr = NULL; | |
| 2125 if (!isPrimitive && Klass::cast(k)->oop_is_instance()) { | |
|
2177
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|
2126 Symbol* soo = instanceKlass::cast(k)->generic_signature(); |
| 0 | 2127 if (soo != NULL) { |
| 2128 const char *gen_sig = soo->as_C_string(); | |
| 2129 if (gen_sig != NULL) { | |
| 2130 char* gen_result; | |
| 2131 jvmtiError err = allocate(strlen(gen_sig) + 1, | |
| 2132 (unsigned char **)&gen_result); | |
| 2133 if (err != JVMTI_ERROR_NONE) { | |
| 2134 return err; | |
| 2135 } | |
| 2136 strcpy(gen_result, gen_sig); | |
| 2137 *generic_ptr = gen_result; | |
| 2138 } | |
| 2139 } | |
| 2140 } | |
| 2141 } | |
| 2142 return JVMTI_ERROR_NONE; | |
| 2143 } /* end GetClassSignature */ | |
| 2144 | |
| 2145 | |
| 2146 // k_mirror - may be primitive, this must be checked | |
| 2147 // status_ptr - pre-checked for NULL | |
| 2148 jvmtiError | |
| 2149 JvmtiEnv::GetClassStatus(oop k_mirror, jint* status_ptr) { | |
| 2150 jint result = 0; | |
| 2151 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2152 result |= JVMTI_CLASS_STATUS_PRIMITIVE; | |
| 2153 } else { | |
| 2154 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
| 2155 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
| 2156 result = Klass::cast(k)->jvmti_class_status(); | |
| 2157 } | |
| 2158 *status_ptr = result; | |
| 2159 | |
| 2160 return JVMTI_ERROR_NONE; | |
| 2161 } /* end GetClassStatus */ | |
| 2162 | |
| 2163 | |
| 2164 // k_mirror - may be primitive, this must be checked | |
| 2165 // source_name_ptr - pre-checked for NULL | |
| 2166 jvmtiError | |
| 2167 JvmtiEnv::GetSourceFileName(oop k_mirror, char** source_name_ptr) { | |
| 2168 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2169 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2170 } | |
| 2171 klassOop k_klass = java_lang_Class::as_klassOop(k_mirror); | |
| 2172 NULL_CHECK(k_klass, JVMTI_ERROR_INVALID_CLASS); | |
| 2173 | |
| 2174 if (!Klass::cast(k_klass)->oop_is_instance()) { | |
| 2175 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2176 } | |
| 2177 | |
|
2177
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|
2178 Symbol* sfnOop = instanceKlass::cast(k_klass)->source_file_name(); |
| 0 | 2179 NULL_CHECK(sfnOop, JVMTI_ERROR_ABSENT_INFORMATION); |
| 2180 { | |
| 2181 JavaThread* current_thread = JavaThread::current(); | |
| 2182 ResourceMark rm(current_thread); | |
| 2183 const char* sfncp = (const char*) sfnOop->as_C_string(); | |
| 2184 *source_name_ptr = (char *) jvmtiMalloc(strlen(sfncp)+1); | |
| 2185 strcpy(*source_name_ptr, sfncp); | |
| 2186 } | |
| 2187 | |
| 2188 return JVMTI_ERROR_NONE; | |
| 2189 } /* end GetSourceFileName */ | |
| 2190 | |
| 2191 | |
| 2192 // k_mirror - may be primitive, this must be checked | |
| 2193 // modifiers_ptr - pre-checked for NULL | |
| 2194 jvmtiError | |
| 2195 JvmtiEnv::GetClassModifiers(oop k_mirror, jint* modifiers_ptr) { | |
| 2196 JavaThread* current_thread = JavaThread::current(); | |
| 2197 jint result = 0; | |
| 2198 if (!java_lang_Class::is_primitive(k_mirror)) { | |
| 2199 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
| 2200 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
| 2201 assert((Klass::cast(k)->oop_is_instance() || Klass::cast(k)->oop_is_array()), "should be an instance or an array klass"); | |
| 2202 result = Klass::cast(k)->compute_modifier_flags(current_thread); | |
| 2203 JavaThread* THREAD = current_thread; // pass to macros | |
| 2204 if (HAS_PENDING_EXCEPTION) { | |
| 2205 CLEAR_PENDING_EXCEPTION; | |
| 2206 return JVMTI_ERROR_INTERNAL; | |
| 2207 }; | |
| 2208 | |
| 2209 // Reset the deleted ACC_SUPER bit ( deleted in compute_modifier_flags()). | |
| 2210 if(Klass::cast(k)->is_super()) { | |
| 2211 result |= JVM_ACC_SUPER; | |
| 2212 } | |
| 2213 } else { | |
| 2214 result = (JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC); | |
| 2215 } | |
| 2216 *modifiers_ptr = result; | |
| 2217 | |
| 2218 return JVMTI_ERROR_NONE; | |
| 2219 } /* end GetClassModifiers */ | |
| 2220 | |
| 2221 | |
| 2222 // k_mirror - may be primitive, this must be checked | |
| 2223 // method_count_ptr - pre-checked for NULL | |
| 2224 // methods_ptr - pre-checked for NULL | |
| 2225 jvmtiError | |
| 2226 JvmtiEnv::GetClassMethods(oop k_mirror, jint* method_count_ptr, jmethodID** methods_ptr) { | |
| 2227 JavaThread* current_thread = JavaThread::current(); | |
| 2228 HandleMark hm(current_thread); | |
| 2229 | |
| 2230 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2231 *method_count_ptr = 0; | |
| 2232 *methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID)); | |
| 2233 return JVMTI_ERROR_NONE; | |
| 2234 } | |
| 2235 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
| 2236 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
| 2237 | |
| 2238 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
| 2239 if (!(Klass::cast(k)->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) { | |
| 2240 return JVMTI_ERROR_CLASS_NOT_PREPARED; | |
| 2241 } | |
| 2242 | |
| 2243 if (!Klass::cast(k)->oop_is_instance()) { | |
| 2244 *method_count_ptr = 0; | |
| 2245 *methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID)); | |
| 2246 return JVMTI_ERROR_NONE; | |
| 2247 } | |
| 2248 instanceKlassHandle instanceK_h(current_thread, k); | |
| 2249 // Allocate the result and fill it in | |
| 2250 int result_length = instanceK_h->methods()->length(); | |
| 2251 jmethodID* result_list = (jmethodID*)jvmtiMalloc(result_length * sizeof(jmethodID)); | |
| 2252 int index; | |
| 2253 if (JvmtiExport::can_maintain_original_method_order()) { | |
| 2254 // Use the original method ordering indices stored in the class, so we can emit | |
| 2255 // jmethodIDs in the order they appeared in the class file | |
| 2256 for (index = 0; index < result_length; index++) { | |
| 2257 methodOop m = methodOop(instanceK_h->methods()->obj_at(index)); | |
| 2258 int original_index = instanceK_h->method_ordering()->int_at(index); | |
| 2259 assert(original_index >= 0 && original_index < result_length, "invalid original method index"); | |
| 2260 jmethodID id = m->jmethod_id(); | |
| 2261 result_list[original_index] = id; | |
| 2262 } | |
| 2263 } else { | |
| 2264 // otherwise just copy in any order | |
| 2265 for (index = 0; index < result_length; index++) { | |
| 2266 methodOop m = methodOop(instanceK_h->methods()->obj_at(index)); | |
| 2267 jmethodID id = m->jmethod_id(); | |
| 2268 result_list[index] = id; | |
| 2269 } | |
| 2270 } | |
| 2271 // Fill in return value. | |
| 2272 *method_count_ptr = result_length; | |
| 2273 *methods_ptr = result_list; | |
| 2274 | |
| 2275 return JVMTI_ERROR_NONE; | |
| 2276 } /* end GetClassMethods */ | |
| 2277 | |
| 2278 | |
| 2279 // k_mirror - may be primitive, this must be checked | |
| 2280 // field_count_ptr - pre-checked for NULL | |
| 2281 // fields_ptr - pre-checked for NULL | |
| 2282 jvmtiError | |
| 2283 JvmtiEnv::GetClassFields(oop k_mirror, jint* field_count_ptr, jfieldID** fields_ptr) { | |
| 2284 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2285 *field_count_ptr = 0; | |
| 2286 *fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID)); | |
| 2287 return JVMTI_ERROR_NONE; | |
| 2288 } | |
| 2289 JavaThread* current_thread = JavaThread::current(); | |
| 2290 HandleMark hm(current_thread); | |
| 2291 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
| 2292 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
| 2293 | |
| 2294 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
| 2295 if (!(Klass::cast(k)->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) { | |
| 2296 return JVMTI_ERROR_CLASS_NOT_PREPARED; | |
| 2297 } | |
| 2298 | |
| 2299 if (!Klass::cast(k)->oop_is_instance()) { | |
| 2300 *field_count_ptr = 0; | |
| 2301 *fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID)); | |
| 2302 return JVMTI_ERROR_NONE; | |
| 2303 } | |
| 2304 | |
| 2305 | |
| 2306 instanceKlassHandle instanceK_h(current_thread, k); | |
| 2307 | |
| 2308 int result_count = 0; | |
| 2309 // First, count the fields. | |
| 2310 FilteredFieldStream flds(instanceK_h, true, true); | |
| 2311 result_count = flds.field_count(); | |
| 2312 | |
| 2313 // Allocate the result and fill it in | |
| 2314 jfieldID* result_list = (jfieldID*) jvmtiMalloc(result_count * sizeof(jfieldID)); | |
| 2315 // The JVMTI spec requires fields in the order they occur in the class file, | |
| 2316 // this is the reverse order of what FieldStream hands out. | |
| 2317 int id_index = (result_count - 1); | |
| 2318 | |
| 2319 for (FilteredFieldStream src_st(instanceK_h, true, true); !src_st.eos(); src_st.next()) { | |
| 2320 result_list[id_index--] = jfieldIDWorkaround::to_jfieldID( | |
| 2321 instanceK_h, src_st.offset(), | |
| 2322 src_st.access_flags().is_static()); | |
| 2323 } | |
| 2324 assert(id_index == -1, "just checking"); | |
| 2325 // Fill in the results | |
| 2326 *field_count_ptr = result_count; | |
| 2327 *fields_ptr = result_list; | |
| 2328 | |
| 2329 return JVMTI_ERROR_NONE; | |
| 2330 } /* end GetClassFields */ | |
| 2331 | |
| 2332 | |
| 2333 // k_mirror - may be primitive, this must be checked | |
| 2334 // interface_count_ptr - pre-checked for NULL | |
| 2335 // interfaces_ptr - pre-checked for NULL | |
| 2336 jvmtiError | |
| 2337 JvmtiEnv::GetImplementedInterfaces(oop k_mirror, jint* interface_count_ptr, jclass** interfaces_ptr) { | |
| 2338 { | |
| 2339 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2340 *interface_count_ptr = 0; | |
| 2341 *interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass)); | |
| 2342 return JVMTI_ERROR_NONE; | |
| 2343 } | |
| 2344 JavaThread* current_thread = JavaThread::current(); | |
| 2345 HandleMark hm(current_thread); | |
| 2346 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
| 2347 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
| 2348 | |
| 2349 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
| 2350 if (!(Klass::cast(k)->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) | |
| 2351 return JVMTI_ERROR_CLASS_NOT_PREPARED; | |
| 2352 | |
| 2353 if (!Klass::cast(k)->oop_is_instance()) { | |
| 2354 *interface_count_ptr = 0; | |
| 2355 *interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass)); | |
| 2356 return JVMTI_ERROR_NONE; | |
| 2357 } | |
| 2358 | |
| 2359 objArrayHandle interface_list(current_thread, instanceKlass::cast(k)->local_interfaces()); | |
| 2360 const int result_length = (interface_list.is_null() ? 0 : interface_list->length()); | |
| 2361 jclass* result_list = (jclass*) jvmtiMalloc(result_length * sizeof(jclass)); | |
| 2362 for (int i_index = 0; i_index < result_length; i_index += 1) { | |
| 2363 oop oop_at = interface_list->obj_at(i_index); | |
| 2364 assert(oop_at->is_klass(), "interfaces must be klassOops"); | |
| 2365 klassOop klassOop_at = klassOop(oop_at); // ???: is there a better way? | |
| 2366 assert(Klass::cast(klassOop_at)->is_interface(), "interfaces must be interfaces"); | |
| 2367 oop mirror_at = Klass::cast(klassOop_at)->java_mirror(); | |
| 2368 Handle handle_at = Handle(current_thread, mirror_at); | |
| 2369 result_list[i_index] = (jclass) jni_reference(handle_at); | |
| 2370 } | |
| 2371 *interface_count_ptr = result_length; | |
| 2372 *interfaces_ptr = result_list; | |
| 2373 } | |
| 2374 | |
| 2375 return JVMTI_ERROR_NONE; | |
| 2376 } /* end GetImplementedInterfaces */ | |
| 2377 | |
| 2378 | |
| 2379 // k_mirror - may be primitive, this must be checked | |
| 2380 // minor_version_ptr - pre-checked for NULL | |
| 2381 // major_version_ptr - pre-checked for NULL | |
| 2382 jvmtiError | |
| 2383 JvmtiEnv::GetClassVersionNumbers(oop k_mirror, jint* minor_version_ptr, jint* major_version_ptr) { | |
| 2384 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2385 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2386 } | |
| 2387 klassOop k_oop = java_lang_Class::as_klassOop(k_mirror); | |
| 2388 Thread *thread = Thread::current(); | |
| 2389 HandleMark hm(thread); | |
| 2390 KlassHandle klass(thread, k_oop); | |
| 2391 | |
| 2392 jint status = klass->jvmti_class_status(); | |
| 2393 if (status & (JVMTI_CLASS_STATUS_ERROR)) { | |
| 2394 return JVMTI_ERROR_INVALID_CLASS; | |
| 2395 } | |
| 2396 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { | |
| 2397 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2398 } | |
| 2399 | |
| 2400 instanceKlassHandle ik(thread, k_oop); | |
| 2401 *minor_version_ptr = ik->minor_version(); | |
| 2402 *major_version_ptr = ik->major_version(); | |
| 2403 | |
| 2404 return JVMTI_ERROR_NONE; | |
| 2405 } /* end GetClassVersionNumbers */ | |
| 2406 | |
| 2407 | |
| 2408 // k_mirror - may be primitive, this must be checked | |
| 2409 // constant_pool_count_ptr - pre-checked for NULL | |
| 2410 // constant_pool_byte_count_ptr - pre-checked for NULL | |
| 2411 // constant_pool_bytes_ptr - pre-checked for NULL | |
| 2412 jvmtiError | |
| 2413 JvmtiEnv::GetConstantPool(oop k_mirror, jint* constant_pool_count_ptr, jint* constant_pool_byte_count_ptr, unsigned char** constant_pool_bytes_ptr) { | |
| 2414 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2415 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2416 } | |
| 2417 | |
| 2418 klassOop k_oop = java_lang_Class::as_klassOop(k_mirror); | |
| 2419 Thread *thread = Thread::current(); | |
| 2420 HandleMark hm(thread); | |
| 2421 ResourceMark rm(thread); | |
| 2422 KlassHandle klass(thread, k_oop); | |
| 2423 | |
| 2424 jint status = klass->jvmti_class_status(); | |
| 2425 if (status & (JVMTI_CLASS_STATUS_ERROR)) { | |
| 2426 return JVMTI_ERROR_INVALID_CLASS; | |
| 2427 } | |
| 2428 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { | |
| 2429 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2430 } | |
| 2431 | |
| 2432 instanceKlassHandle ikh(thread, k_oop); | |
| 2433 constantPoolHandle constants(thread, ikh->constants()); | |
| 2434 ObjectLocker ol(constants, thread); // lock constant pool while we query it | |
| 2435 | |
| 2436 JvmtiConstantPoolReconstituter reconstituter(ikh); | |
| 2437 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
| 2438 return reconstituter.get_error(); | |
| 2439 } | |
| 2440 | |
| 2441 unsigned char *cpool_bytes; | |
| 2442 int cpool_size = reconstituter.cpool_size(); | |
| 2443 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
| 2444 return reconstituter.get_error(); | |
| 2445 } | |
| 2446 jvmtiError res = allocate(cpool_size, &cpool_bytes); | |
| 2447 if (res != JVMTI_ERROR_NONE) { | |
| 2448 return res; | |
| 2449 } | |
| 2450 reconstituter.copy_cpool_bytes(cpool_bytes); | |
| 2451 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
| 2452 return reconstituter.get_error(); | |
| 2453 } | |
| 2454 | |
| 2455 *constant_pool_count_ptr = constants->length(); | |
| 2456 *constant_pool_byte_count_ptr = cpool_size; | |
| 2457 *constant_pool_bytes_ptr = cpool_bytes; | |
| 2458 | |
| 2459 return JVMTI_ERROR_NONE; | |
| 2460 } /* end GetConstantPool */ | |
| 2461 | |
| 2462 | |
| 2463 // k_mirror - may be primitive, this must be checked | |
| 2464 // is_interface_ptr - pre-checked for NULL | |
| 2465 jvmtiError | |
| 2466 JvmtiEnv::IsInterface(oop k_mirror, jboolean* is_interface_ptr) { | |
| 2467 { | |
| 2468 bool result = false; | |
| 2469 if (!java_lang_Class::is_primitive(k_mirror)) { | |
| 2470 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
| 2471 if (k != NULL && Klass::cast(k)->is_interface()) { | |
| 2472 result = true; | |
| 2473 } | |
| 2474 } | |
| 2475 *is_interface_ptr = result; | |
| 2476 } | |
| 2477 | |
| 2478 return JVMTI_ERROR_NONE; | |
| 2479 } /* end IsInterface */ | |
| 2480 | |
| 2481 | |
| 2482 // k_mirror - may be primitive, this must be checked | |
| 2483 // is_array_class_ptr - pre-checked for NULL | |
| 2484 jvmtiError | |
| 2485 JvmtiEnv::IsArrayClass(oop k_mirror, jboolean* is_array_class_ptr) { | |
| 2486 { | |
| 2487 bool result = false; | |
| 2488 if (!java_lang_Class::is_primitive(k_mirror)) { | |
| 2489 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
| 2490 if (k != NULL && Klass::cast(k)->oop_is_array()) { | |
| 2491 result = true; | |
| 2492 } | |
| 2493 } | |
| 2494 *is_array_class_ptr = result; | |
| 2495 } | |
| 2496 | |
| 2497 return JVMTI_ERROR_NONE; | |
| 2498 } /* end IsArrayClass */ | |
| 2499 | |
| 2500 | |
| 2501 // k_mirror - may be primitive, this must be checked | |
| 2502 // classloader_ptr - pre-checked for NULL | |
| 2503 jvmtiError | |
| 2504 JvmtiEnv::GetClassLoader(oop k_mirror, jobject* classloader_ptr) { | |
| 2505 { | |
| 2506 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2507 *classloader_ptr = (jclass) jni_reference(Handle()); | |
| 2508 return JVMTI_ERROR_NONE; | |
| 2509 } | |
| 2510 JavaThread* current_thread = JavaThread::current(); | |
| 2511 HandleMark hm(current_thread); | |
| 2512 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
| 2513 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
| 2514 | |
| 2515 oop result_oop = Klass::cast(k)->class_loader(); | |
| 2516 if (result_oop == NULL) { | |
| 2517 *classloader_ptr = (jclass) jni_reference(Handle()); | |
| 2518 return JVMTI_ERROR_NONE; | |
| 2519 } | |
| 2520 Handle result_handle = Handle(current_thread, result_oop); | |
| 2521 jclass result_jnihandle = (jclass) jni_reference(result_handle); | |
| 2522 *classloader_ptr = result_jnihandle; | |
| 2523 } | |
| 2524 return JVMTI_ERROR_NONE; | |
| 2525 } /* end GetClassLoader */ | |
| 2526 | |
| 2527 | |
| 2528 // k_mirror - may be primitive, this must be checked | |
| 2529 // source_debug_extension_ptr - pre-checked for NULL | |
| 2530 jvmtiError | |
| 2531 JvmtiEnv::GetSourceDebugExtension(oop k_mirror, char** source_debug_extension_ptr) { | |
| 2532 { | |
| 2533 if (java_lang_Class::is_primitive(k_mirror)) { | |
| 2534 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2535 } | |
| 2536 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
| 2537 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
| 2538 if (!Klass::cast(k)->oop_is_instance()) { | |
| 2539 return JVMTI_ERROR_ABSENT_INFORMATION; | |
| 2540 } | |
|
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|
2541 Symbol* sdeOop = instanceKlass::cast(k)->source_debug_extension(); |
| 0 | 2542 NULL_CHECK(sdeOop, JVMTI_ERROR_ABSENT_INFORMATION); |
| 2543 | |
| 2544 { | |
| 2545 JavaThread* current_thread = JavaThread::current(); | |
| 2546 ResourceMark rm(current_thread); | |
| 2547 const char* sdecp = (const char*) sdeOop->as_C_string(); | |
| 2548 *source_debug_extension_ptr = (char *) jvmtiMalloc(strlen(sdecp)+1); | |
| 2549 strcpy(*source_debug_extension_ptr, sdecp); | |
| 2550 } | |
| 2551 } | |
| 2552 | |
| 2553 return JVMTI_ERROR_NONE; | |
| 2554 } /* end GetSourceDebugExtension */ | |
| 2555 | |
| 2556 // | |
| 2557 // Object functions | |
| 2558 // | |
| 2559 | |
| 2560 // hash_code_ptr - pre-checked for NULL | |
| 2561 jvmtiError | |
| 2562 JvmtiEnv::GetObjectHashCode(jobject object, jint* hash_code_ptr) { | |
| 2563 oop mirror = JNIHandles::resolve_external_guard(object); | |
| 2564 NULL_CHECK(mirror, JVMTI_ERROR_INVALID_OBJECT); | |
| 2565 NULL_CHECK(hash_code_ptr, JVMTI_ERROR_NULL_POINTER); | |
| 2566 | |
| 2567 { | |
| 2568 jint result = (jint) mirror->identity_hash(); | |
| 2569 *hash_code_ptr = result; | |
| 2570 } | |
| 2571 return JVMTI_ERROR_NONE; | |
| 2572 } /* end GetObjectHashCode */ | |
| 2573 | |
| 2574 | |
| 2575 // info_ptr - pre-checked for NULL | |
| 2576 jvmtiError | |
| 2577 JvmtiEnv::GetObjectMonitorUsage(jobject object, jvmtiMonitorUsage* info_ptr) { | |
| 2578 JavaThread* calling_thread = JavaThread::current(); | |
| 2579 jvmtiError err = get_object_monitor_usage(calling_thread, object, info_ptr); | |
| 2580 if (err == JVMTI_ERROR_THREAD_NOT_SUSPENDED) { | |
| 2581 // Some of the critical threads were not suspended. go to a safepoint and try again | |
| 2582 VM_GetObjectMonitorUsage op(this, calling_thread, object, info_ptr); | |
| 2583 VMThread::execute(&op); | |
| 2584 err = op.result(); | |
| 2585 } | |
| 2586 return err; | |
| 2587 } /* end GetObjectMonitorUsage */ | |
| 2588 | |
| 2589 | |
| 2590 // | |
| 2591 // Field functions | |
| 2592 // | |
| 2593 | |
| 2594 // name_ptr - NULL is a valid value, must be checked | |
| 2595 // signature_ptr - NULL is a valid value, must be checked | |
| 2596 // generic_ptr - NULL is a valid value, must be checked | |
| 2597 jvmtiError | |
| 2598 JvmtiEnv::GetFieldName(fieldDescriptor* fdesc_ptr, char** name_ptr, char** signature_ptr, char** generic_ptr) { | |
| 2599 JavaThread* current_thread = JavaThread::current(); | |
| 2600 ResourceMark rm(current_thread); | |
| 2601 if (name_ptr == NULL) { | |
| 2602 // just don't return the name | |
| 2603 } else { | |
| 2604 const char* fieldName = fdesc_ptr->name()->as_C_string(); | |
| 2605 *name_ptr = (char*) jvmtiMalloc(strlen(fieldName) + 1); | |
| 2606 if (*name_ptr == NULL) | |
| 2607 return JVMTI_ERROR_OUT_OF_MEMORY; | |
| 2608 strcpy(*name_ptr, fieldName); | |
| 2609 } | |
| 2610 if (signature_ptr== NULL) { | |
| 2611 // just don't return the signature | |
| 2612 } else { | |
| 2613 const char* fieldSignature = fdesc_ptr->signature()->as_C_string(); | |
| 2614 *signature_ptr = (char*) jvmtiMalloc(strlen(fieldSignature) + 1); | |
| 2615 if (*signature_ptr == NULL) | |
| 2616 return JVMTI_ERROR_OUT_OF_MEMORY; | |
| 2617 strcpy(*signature_ptr, fieldSignature); | |
| 2618 } | |
| 2619 if (generic_ptr != NULL) { | |
| 2620 *generic_ptr = NULL; | |
|
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|
2621 Symbol* soop = fdesc_ptr->generic_signature(); |
| 0 | 2622 if (soop != NULL) { |
| 2623 const char* gen_sig = soop->as_C_string(); | |
| 2624 if (gen_sig != NULL) { | |
| 2625 jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr); | |
| 2626 if (err != JVMTI_ERROR_NONE) { | |
| 2627 return err; | |
| 2628 } | |
| 2629 strcpy(*generic_ptr, gen_sig); | |
| 2630 } | |
| 2631 } | |
| 2632 } | |
| 2633 return JVMTI_ERROR_NONE; | |
| 2634 } /* end GetFieldName */ | |
| 2635 | |
| 2636 | |
| 2637 // declaring_class_ptr - pre-checked for NULL | |
| 2638 jvmtiError | |
| 2639 JvmtiEnv::GetFieldDeclaringClass(fieldDescriptor* fdesc_ptr, jclass* declaring_class_ptr) { | |
| 2640 | |
| 2641 *declaring_class_ptr = get_jni_class_non_null(fdesc_ptr->field_holder()); | |
| 2642 return JVMTI_ERROR_NONE; | |
| 2643 } /* end GetFieldDeclaringClass */ | |
| 2644 | |
| 2645 | |
| 2646 // modifiers_ptr - pre-checked for NULL | |
| 2647 jvmtiError | |
| 2648 JvmtiEnv::GetFieldModifiers(fieldDescriptor* fdesc_ptr, jint* modifiers_ptr) { | |
| 2649 | |
| 2650 AccessFlags resultFlags = fdesc_ptr->access_flags(); | |
| 2651 jint result = resultFlags.as_int(); | |
| 2652 *modifiers_ptr = result; | |
| 2653 | |
| 2654 return JVMTI_ERROR_NONE; | |
| 2655 } /* end GetFieldModifiers */ | |
| 2656 | |
| 2657 | |
| 2658 // is_synthetic_ptr - pre-checked for NULL | |
| 2659 jvmtiError | |
| 2660 JvmtiEnv::IsFieldSynthetic(fieldDescriptor* fdesc_ptr, jboolean* is_synthetic_ptr) { | |
| 2661 *is_synthetic_ptr = fdesc_ptr->is_synthetic(); | |
| 2662 return JVMTI_ERROR_NONE; | |
| 2663 } /* end IsFieldSynthetic */ | |
| 2664 | |
| 2665 | |
| 2666 // | |
| 2667 // Method functions | |
| 2668 // | |
| 2669 | |
| 2670 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2671 // name_ptr - NULL is a valid value, must be checked | |
| 2672 // signature_ptr - NULL is a valid value, must be checked | |
| 2673 // generic_ptr - NULL is a valid value, must be checked | |
| 2674 jvmtiError | |
| 2675 JvmtiEnv::GetMethodName(methodOop method_oop, char** name_ptr, char** signature_ptr, char** generic_ptr) { | |
| 2676 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2677 JavaThread* current_thread = JavaThread::current(); | |
| 2678 | |
| 2679 ResourceMark rm(current_thread); // get the utf8 name and signature | |
| 2680 if (name_ptr == NULL) { | |
| 2681 // just don't return the name | |
| 2682 } else { | |
| 2683 const char* utf8_name = (const char *) method_oop->name()->as_utf8(); | |
| 2684 *name_ptr = (char *) jvmtiMalloc(strlen(utf8_name)+1); | |
| 2685 strcpy(*name_ptr, utf8_name); | |
| 2686 } | |
| 2687 if (signature_ptr == NULL) { | |
| 2688 // just don't return the signature | |
| 2689 } else { | |
| 2690 const char* utf8_signature = (const char *) method_oop->signature()->as_utf8(); | |
| 2691 *signature_ptr = (char *) jvmtiMalloc(strlen(utf8_signature) + 1); | |
| 2692 strcpy(*signature_ptr, utf8_signature); | |
| 2693 } | |
| 2694 | |
| 2695 if (generic_ptr != NULL) { | |
| 2696 *generic_ptr = NULL; | |
|
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|
2697 Symbol* soop = method_oop->generic_signature(); |
| 0 | 2698 if (soop != NULL) { |
| 2699 const char* gen_sig = soop->as_C_string(); | |
| 2700 if (gen_sig != NULL) { | |
| 2701 jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr); | |
| 2702 if (err != JVMTI_ERROR_NONE) { | |
| 2703 return err; | |
| 2704 } | |
| 2705 strcpy(*generic_ptr, gen_sig); | |
| 2706 } | |
| 2707 } | |
| 2708 } | |
| 2709 return JVMTI_ERROR_NONE; | |
| 2710 } /* end GetMethodName */ | |
| 2711 | |
| 2712 | |
| 2713 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2714 // declaring_class_ptr - pre-checked for NULL | |
| 2715 jvmtiError | |
| 2716 JvmtiEnv::GetMethodDeclaringClass(methodOop method_oop, jclass* declaring_class_ptr) { | |
| 2717 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2718 (*declaring_class_ptr) = get_jni_class_non_null(method_oop->method_holder()); | |
| 2719 return JVMTI_ERROR_NONE; | |
| 2720 } /* end GetMethodDeclaringClass */ | |
| 2721 | |
| 2722 | |
| 2723 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2724 // modifiers_ptr - pre-checked for NULL | |
| 2725 jvmtiError | |
| 2726 JvmtiEnv::GetMethodModifiers(methodOop method_oop, jint* modifiers_ptr) { | |
| 2727 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2728 (*modifiers_ptr) = method_oop->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 2729 return JVMTI_ERROR_NONE; | |
| 2730 } /* end GetMethodModifiers */ | |
| 2731 | |
| 2732 | |
| 2733 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2734 // max_ptr - pre-checked for NULL | |
| 2735 jvmtiError | |
| 2736 JvmtiEnv::GetMaxLocals(methodOop method_oop, jint* max_ptr) { | |
| 2737 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2738 // get max stack | |
| 2739 (*max_ptr) = method_oop->max_locals(); | |
| 2740 return JVMTI_ERROR_NONE; | |
| 2741 } /* end GetMaxLocals */ | |
| 2742 | |
| 2743 | |
| 2744 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2745 // size_ptr - pre-checked for NULL | |
| 2746 jvmtiError | |
| 2747 JvmtiEnv::GetArgumentsSize(methodOop method_oop, jint* size_ptr) { | |
| 2748 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2749 // get size of arguments | |
| 2750 | |
| 2751 (*size_ptr) = method_oop->size_of_parameters(); | |
| 2752 return JVMTI_ERROR_NONE; | |
| 2753 } /* end GetArgumentsSize */ | |
| 2754 | |
| 2755 | |
| 2756 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2757 // entry_count_ptr - pre-checked for NULL | |
| 2758 // table_ptr - pre-checked for NULL | |
| 2759 jvmtiError | |
| 2760 JvmtiEnv::GetLineNumberTable(methodOop method_oop, jint* entry_count_ptr, jvmtiLineNumberEntry** table_ptr) { | |
| 2761 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2762 if (!method_oop->has_linenumber_table()) { | |
| 2763 return (JVMTI_ERROR_ABSENT_INFORMATION); | |
| 2764 } | |
| 2765 | |
| 2766 // The line number table is compressed so we don't know how big it is until decompressed. | |
| 2767 // Decompression is really fast so we just do it twice. | |
| 2768 | |
| 2769 // Compute size of table | |
| 2770 jint num_entries = 0; | |
| 2771 CompressedLineNumberReadStream stream(method_oop->compressed_linenumber_table()); | |
| 2772 while (stream.read_pair()) { | |
| 2773 num_entries++; | |
| 2774 } | |
| 2775 jvmtiLineNumberEntry *jvmti_table = | |
| 2776 (jvmtiLineNumberEntry *)jvmtiMalloc(num_entries * (sizeof(jvmtiLineNumberEntry))); | |
| 2777 | |
| 2778 // Fill jvmti table | |
| 2779 if (num_entries > 0) { | |
| 2780 int index = 0; | |
| 2781 CompressedLineNumberReadStream stream(method_oop->compressed_linenumber_table()); | |
| 2782 while (stream.read_pair()) { | |
| 2783 jvmti_table[index].start_location = (jlocation) stream.bci(); | |
| 2784 jvmti_table[index].line_number = (jint) stream.line(); | |
| 2785 index++; | |
| 2786 } | |
| 2787 assert(index == num_entries, "sanity check"); | |
| 2788 } | |
| 2789 | |
| 2790 // Set up results | |
| 2791 (*entry_count_ptr) = num_entries; | |
| 2792 (*table_ptr) = jvmti_table; | |
| 2793 | |
| 2794 return JVMTI_ERROR_NONE; | |
| 2795 } /* end GetLineNumberTable */ | |
| 2796 | |
| 2797 | |
| 2798 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2799 // start_location_ptr - pre-checked for NULL | |
| 2800 // end_location_ptr - pre-checked for NULL | |
| 2801 jvmtiError | |
| 2802 JvmtiEnv::GetMethodLocation(methodOop method_oop, jlocation* start_location_ptr, jlocation* end_location_ptr) { | |
| 2803 | |
| 2804 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2805 // get start and end location | |
| 2806 (*end_location_ptr) = (jlocation) (method_oop->code_size() - 1); | |
| 2807 if (method_oop->code_size() == 0) { | |
| 2808 // there is no code so there is no start location | |
| 2809 (*start_location_ptr) = (jlocation)(-1); | |
| 2810 } else { | |
| 2811 (*start_location_ptr) = (jlocation)(0); | |
| 2812 } | |
| 2813 | |
| 2814 return JVMTI_ERROR_NONE; | |
| 2815 } /* end GetMethodLocation */ | |
| 2816 | |
| 2817 | |
| 2818 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2819 // entry_count_ptr - pre-checked for NULL | |
| 2820 // table_ptr - pre-checked for NULL | |
| 2821 jvmtiError | |
| 2822 JvmtiEnv::GetLocalVariableTable(methodOop method_oop, jint* entry_count_ptr, jvmtiLocalVariableEntry** table_ptr) { | |
| 2823 | |
| 2824 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2825 JavaThread* current_thread = JavaThread::current(); | |
| 2826 | |
| 2827 // does the klass have any local variable information? | |
| 2828 instanceKlass* ik = instanceKlass::cast(method_oop->method_holder()); | |
| 2829 if (!ik->access_flags().has_localvariable_table()) { | |
| 2830 return (JVMTI_ERROR_ABSENT_INFORMATION); | |
| 2831 } | |
| 2832 | |
| 2833 constantPoolOop constants = method_oop->constants(); | |
| 2834 NULL_CHECK(constants, JVMTI_ERROR_ABSENT_INFORMATION); | |
| 2835 | |
| 2836 // in the vm localvariable table representation, 6 consecutive elements in the table | |
| 2837 // represent a 6-tuple of shorts | |
| 2838 // [start_pc, length, name_index, descriptor_index, signature_index, index] | |
| 2839 jint num_entries = method_oop->localvariable_table_length(); | |
| 2840 jvmtiLocalVariableEntry *jvmti_table = (jvmtiLocalVariableEntry *) | |
| 2841 jvmtiMalloc(num_entries * (sizeof(jvmtiLocalVariableEntry))); | |
| 2842 | |
| 2843 if (num_entries > 0) { | |
| 2844 LocalVariableTableElement* table = method_oop->localvariable_table_start(); | |
| 2845 for (int i = 0; i < num_entries; i++) { | |
| 2846 // get the 5 tuple information from the vm table | |
| 2847 jlocation start_location = (jlocation) table[i].start_bci; | |
| 2848 jint length = (jint) table[i].length; | |
| 2849 int name_index = (int) table[i].name_cp_index; | |
| 2850 int signature_index = (int) table[i].descriptor_cp_index; | |
| 2851 int generic_signature_index = (int) table[i].signature_cp_index; | |
| 2852 jint slot = (jint) table[i].slot; | |
| 2853 | |
| 2854 // get utf8 name and signature | |
| 2855 char *name_buf = NULL; | |
| 2856 char *sig_buf = NULL; | |
| 2857 char *gen_sig_buf = NULL; | |
| 2858 { | |
| 2859 ResourceMark rm(current_thread); | |
| 2860 | |
| 2861 const char *utf8_name = (const char *) constants->symbol_at(name_index)->as_utf8(); | |
| 2862 name_buf = (char *) jvmtiMalloc(strlen(utf8_name)+1); | |
| 2863 strcpy(name_buf, utf8_name); | |
| 2864 | |
| 2865 const char *utf8_signature = (const char *) constants->symbol_at(signature_index)->as_utf8(); | |
| 2866 sig_buf = (char *) jvmtiMalloc(strlen(utf8_signature)+1); | |
| 2867 strcpy(sig_buf, utf8_signature); | |
| 2868 | |
| 2869 if (generic_signature_index > 0) { | |
| 2870 const char *utf8_gen_sign = (const char *) | |
| 2871 constants->symbol_at(generic_signature_index)->as_utf8(); | |
| 2872 gen_sig_buf = (char *) jvmtiMalloc(strlen(utf8_gen_sign)+1); | |
| 2873 strcpy(gen_sig_buf, utf8_gen_sign); | |
| 2874 } | |
| 2875 } | |
| 2876 | |
| 2877 // fill in the jvmti local variable table | |
| 2878 jvmti_table[i].start_location = start_location; | |
| 2879 jvmti_table[i].length = length; | |
| 2880 jvmti_table[i].name = name_buf; | |
| 2881 jvmti_table[i].signature = sig_buf; | |
| 2882 jvmti_table[i].generic_signature = gen_sig_buf; | |
| 2883 jvmti_table[i].slot = slot; | |
| 2884 } | |
| 2885 } | |
| 2886 | |
| 2887 // set results | |
| 2888 (*entry_count_ptr) = num_entries; | |
| 2889 (*table_ptr) = jvmti_table; | |
| 2890 | |
| 2891 return JVMTI_ERROR_NONE; | |
| 2892 } /* end GetLocalVariableTable */ | |
| 2893 | |
| 2894 | |
| 2895 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2896 // bytecode_count_ptr - pre-checked for NULL | |
| 2897 // bytecodes_ptr - pre-checked for NULL | |
| 2898 jvmtiError | |
| 2899 JvmtiEnv::GetBytecodes(methodOop method_oop, jint* bytecode_count_ptr, unsigned char** bytecodes_ptr) { | |
| 2900 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2901 | |
| 2902 HandleMark hm; | |
| 2903 methodHandle method(method_oop); | |
| 2904 jint size = (jint)method->code_size(); | |
| 2905 jvmtiError err = allocate(size, bytecodes_ptr); | |
| 2906 if (err != JVMTI_ERROR_NONE) { | |
| 2907 return err; | |
| 2908 } | |
| 2909 | |
| 2910 (*bytecode_count_ptr) = size; | |
| 2911 // get byte codes | |
| 2912 JvmtiClassFileReconstituter::copy_bytecodes(method, *bytecodes_ptr); | |
| 2913 | |
| 2914 return JVMTI_ERROR_NONE; | |
| 2915 } /* end GetBytecodes */ | |
| 2916 | |
| 2917 | |
| 2918 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2919 // is_native_ptr - pre-checked for NULL | |
| 2920 jvmtiError | |
| 2921 JvmtiEnv::IsMethodNative(methodOop method_oop, jboolean* is_native_ptr) { | |
| 2922 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2923 (*is_native_ptr) = method_oop->is_native(); | |
| 2924 return JVMTI_ERROR_NONE; | |
| 2925 } /* end IsMethodNative */ | |
| 2926 | |
| 2927 | |
| 2928 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2929 // is_synthetic_ptr - pre-checked for NULL | |
| 2930 jvmtiError | |
| 2931 JvmtiEnv::IsMethodSynthetic(methodOop method_oop, jboolean* is_synthetic_ptr) { | |
| 2932 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
| 2933 (*is_synthetic_ptr) = method_oop->is_synthetic(); | |
| 2934 return JVMTI_ERROR_NONE; | |
| 2935 } /* end IsMethodSynthetic */ | |
| 2936 | |
| 2937 | |
| 2938 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
| 2939 // is_obsolete_ptr - pre-checked for NULL | |
| 2940 jvmtiError | |
| 2941 JvmtiEnv::IsMethodObsolete(methodOop method_oop, jboolean* is_obsolete_ptr) { | |
| 1121 | 2942 if (use_version_1_0_semantics() && |
| 2943 get_capabilities()->can_redefine_classes == 0) { | |
| 2944 // This JvmtiEnv requested version 1.0 semantics and this function | |
| 2945 // requires the can_redefine_classes capability in version 1.0 so | |
| 2946 // we need to return an error here. | |
| 2947 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; | |
| 2948 } | |
| 2949 | |
| 0 | 2950 if (method_oop == NULL || method_oop->is_obsolete()) { |
| 2951 *is_obsolete_ptr = true; | |
| 2952 } else { | |
| 2953 *is_obsolete_ptr = false; | |
| 2954 } | |
| 2955 return JVMTI_ERROR_NONE; | |
| 2956 } /* end IsMethodObsolete */ | |
| 2957 | |
| 2958 // | |
| 2959 // Raw Monitor functions | |
| 2960 // | |
| 2961 | |
| 2962 // name - pre-checked for NULL | |
| 2963 // monitor_ptr - pre-checked for NULL | |
| 2964 jvmtiError | |
| 2965 JvmtiEnv::CreateRawMonitor(const char* name, jrawMonitorID* monitor_ptr) { | |
| 2966 JvmtiRawMonitor* rmonitor = new JvmtiRawMonitor(name); | |
| 2967 NULL_CHECK(rmonitor, JVMTI_ERROR_OUT_OF_MEMORY); | |
| 2968 | |
| 2969 *monitor_ptr = (jrawMonitorID)rmonitor; | |
| 2970 | |
| 2971 return JVMTI_ERROR_NONE; | |
| 2972 } /* end CreateRawMonitor */ | |
| 2973 | |
| 2974 | |
| 2975 // rmonitor - pre-checked for validity | |
| 2976 jvmtiError | |
| 2977 JvmtiEnv::DestroyRawMonitor(JvmtiRawMonitor * rmonitor) { | |
| 2978 if (Threads::number_of_threads() == 0) { | |
| 2979 // Remove this monitor from pending raw monitors list | |
| 2980 // if it has entered in onload or start phase. | |
| 2981 JvmtiPendingMonitors::destroy(rmonitor); | |
| 2982 } else { | |
| 2983 Thread* thread = Thread::current(); | |
| 2984 if (rmonitor->is_entered(thread)) { | |
| 2985 // The caller owns this monitor which we are about to destroy. | |
| 2986 // We exit the underlying synchronization object so that the | |
| 2987 // "delete monitor" call below can work without an assertion | |
| 2988 // failure on systems that don't like destroying synchronization | |
| 2989 // objects that are locked. | |
| 2990 int r; | |
| 2991 intptr_t recursion = rmonitor->recursions(); | |
| 2992 for (intptr_t i=0; i <= recursion; i++) { | |
| 2993 r = rmonitor->raw_exit(thread); | |
| 2994 assert(r == ObjectMonitor::OM_OK, "raw_exit should have worked"); | |
| 2995 if (r != ObjectMonitor::OM_OK) { // robustness | |
| 2996 return JVMTI_ERROR_INTERNAL; | |
| 2997 } | |
| 2998 } | |
| 2999 } | |
| 3000 if (rmonitor->owner() != NULL) { | |
| 3001 // The caller is trying to destroy a monitor that is locked by | |
| 3002 // someone else. While this is not forbidden by the JVMTI | |
| 3003 // spec, it will cause an assertion failure on systems that don't | |
| 3004 // like destroying synchronization objects that are locked. | |
| 3005 // We indicate a problem with the error return (and leak the | |
| 3006 // monitor's memory). | |
| 3007 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
| 3008 } | |
| 3009 } | |
| 3010 | |
| 3011 delete rmonitor; | |
| 3012 | |
| 3013 return JVMTI_ERROR_NONE; | |
| 3014 } /* end DestroyRawMonitor */ | |
| 3015 | |
| 3016 | |
| 3017 // rmonitor - pre-checked for validity | |
| 3018 jvmtiError | |
| 3019 JvmtiEnv::RawMonitorEnter(JvmtiRawMonitor * rmonitor) { | |
| 3020 if (Threads::number_of_threads() == 0) { | |
| 3021 // No JavaThreads exist so ObjectMonitor enter cannot be | |
| 3022 // used, add this raw monitor to the pending list. | |
| 3023 // The pending monitors will be actually entered when | |
| 3024 // the VM is setup. | |
| 3025 // See transition_pending_raw_monitors in create_vm() | |
| 3026 // in thread.cpp. | |
| 3027 JvmtiPendingMonitors::enter(rmonitor); | |
| 3028 } else { | |
| 3029 int r; | |
| 3030 Thread* thread = Thread::current(); | |
| 3031 | |
| 3032 if (thread->is_Java_thread()) { | |
| 3033 JavaThread* current_thread = (JavaThread*)thread; | |
| 3034 | |
| 3035 #ifdef PROPER_TRANSITIONS | |
| 3036 // Not really unknown but ThreadInVMfromNative does more than we want | |
| 3037 ThreadInVMfromUnknown __tiv; | |
| 3038 { | |
| 3039 ThreadBlockInVM __tbivm(current_thread); | |
| 3040 r = rmonitor->raw_enter(current_thread); | |
| 3041 } | |
| 3042 #else | |
| 3043 /* Transition to thread_blocked without entering vm state */ | |
| 3044 /* This is really evil. Normally you can't undo _thread_blocked */ | |
| 3045 /* transitions like this because it would cause us to miss a */ | |
| 3046 /* safepoint but since the thread was already in _thread_in_native */ | |
| 3047 /* the thread is not leaving a safepoint safe state and it will */ | |
| 3048 /* block when it tries to return from native. We can't safepoint */ | |
| 3049 /* block in here because we could deadlock the vmthread. Blech. */ | |
| 3050 | |
| 3051 JavaThreadState state = current_thread->thread_state(); | |
| 3052 assert(state == _thread_in_native, "Must be _thread_in_native"); | |
| 3053 // frame should already be walkable since we are in native | |
| 3054 assert(!current_thread->has_last_Java_frame() || | |
| 3055 current_thread->frame_anchor()->walkable(), "Must be walkable"); | |
| 3056 current_thread->set_thread_state(_thread_blocked); | |
| 3057 | |
| 3058 r = rmonitor->raw_enter(current_thread); | |
| 3059 // restore state, still at a safepoint safe state | |
| 3060 current_thread->set_thread_state(state); | |
| 3061 | |
| 3062 #endif /* PROPER_TRANSITIONS */ | |
| 3063 assert(r == ObjectMonitor::OM_OK, "raw_enter should have worked"); | |
| 3064 } else { | |
| 3065 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
| 3066 r = rmonitor->raw_enter(thread); | |
| 3067 } else { | |
| 3068 ShouldNotReachHere(); | |
| 3069 } | |
| 3070 } | |
| 3071 | |
| 3072 if (r != ObjectMonitor::OM_OK) { // robustness | |
| 3073 return JVMTI_ERROR_INTERNAL; | |
| 3074 } | |
| 3075 } | |
| 3076 return JVMTI_ERROR_NONE; | |
| 3077 } /* end RawMonitorEnter */ | |
| 3078 | |
| 3079 | |
| 3080 // rmonitor - pre-checked for validity | |
| 3081 jvmtiError | |
| 3082 JvmtiEnv::RawMonitorExit(JvmtiRawMonitor * rmonitor) { | |
| 3083 jvmtiError err = JVMTI_ERROR_NONE; | |
| 3084 | |
| 3085 if (Threads::number_of_threads() == 0) { | |
| 3086 // No JavaThreads exist so just remove this monitor from the pending list. | |
| 3087 // Bool value from exit is false if rmonitor is not in the list. | |
| 3088 if (!JvmtiPendingMonitors::exit(rmonitor)) { | |
| 3089 err = JVMTI_ERROR_NOT_MONITOR_OWNER; | |
| 3090 } | |
| 3091 } else { | |
| 3092 int r; | |
| 3093 Thread* thread = Thread::current(); | |
| 3094 | |
| 3095 if (thread->is_Java_thread()) { | |
| 3096 JavaThread* current_thread = (JavaThread*)thread; | |
| 3097 #ifdef PROPER_TRANSITIONS | |
| 3098 // Not really unknown but ThreadInVMfromNative does more than we want | |
| 3099 ThreadInVMfromUnknown __tiv; | |
| 3100 #endif /* PROPER_TRANSITIONS */ | |
| 3101 r = rmonitor->raw_exit(current_thread); | |
| 3102 } else { | |
| 3103 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
| 3104 r = rmonitor->raw_exit(thread); | |
| 3105 } else { | |
| 3106 ShouldNotReachHere(); | |
| 3107 } | |
| 3108 } | |
| 3109 | |
| 3110 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
| 3111 err = JVMTI_ERROR_NOT_MONITOR_OWNER; | |
| 3112 } else { | |
| 3113 assert(r == ObjectMonitor::OM_OK, "raw_exit should have worked"); | |
| 3114 if (r != ObjectMonitor::OM_OK) { // robustness | |
| 3115 err = JVMTI_ERROR_INTERNAL; | |
| 3116 } | |
| 3117 } | |
| 3118 } | |
| 3119 return err; | |
| 3120 } /* end RawMonitorExit */ | |
| 3121 | |
| 3122 | |
| 3123 // rmonitor - pre-checked for validity | |
| 3124 jvmtiError | |
| 3125 JvmtiEnv::RawMonitorWait(JvmtiRawMonitor * rmonitor, jlong millis) { | |
| 3126 int r; | |
| 3127 Thread* thread = Thread::current(); | |
| 3128 | |
| 3129 if (thread->is_Java_thread()) { | |
| 3130 JavaThread* current_thread = (JavaThread*)thread; | |
| 3131 #ifdef PROPER_TRANSITIONS | |
| 3132 // Not really unknown but ThreadInVMfromNative does more than we want | |
| 3133 ThreadInVMfromUnknown __tiv; | |
| 3134 { | |
| 3135 ThreadBlockInVM __tbivm(current_thread); | |
| 3136 r = rmonitor->raw_wait(millis, true, current_thread); | |
| 3137 } | |
| 3138 #else | |
| 3139 /* Transition to thread_blocked without entering vm state */ | |
| 3140 /* This is really evil. Normally you can't undo _thread_blocked */ | |
| 3141 /* transitions like this because it would cause us to miss a */ | |
| 3142 /* safepoint but since the thread was already in _thread_in_native */ | |
| 3143 /* the thread is not leaving a safepoint safe state and it will */ | |
| 3144 /* block when it tries to return from native. We can't safepoint */ | |
| 3145 /* block in here because we could deadlock the vmthread. Blech. */ | |
| 3146 | |
| 3147 JavaThreadState state = current_thread->thread_state(); | |
| 3148 assert(state == _thread_in_native, "Must be _thread_in_native"); | |
| 3149 // frame should already be walkable since we are in native | |
| 3150 assert(!current_thread->has_last_Java_frame() || | |
| 3151 current_thread->frame_anchor()->walkable(), "Must be walkable"); | |
| 3152 current_thread->set_thread_state(_thread_blocked); | |
| 3153 | |
| 3154 r = rmonitor->raw_wait(millis, true, current_thread); | |
| 3155 // restore state, still at a safepoint safe state | |
| 3156 current_thread->set_thread_state(state); | |
| 3157 | |
| 3158 #endif /* PROPER_TRANSITIONS */ | |
| 3159 } else { | |
| 3160 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
| 3161 r = rmonitor->raw_wait(millis, true, thread); | |
| 3162 } else { | |
| 3163 ShouldNotReachHere(); | |
| 3164 } | |
| 3165 } | |
| 3166 | |
| 3167 switch (r) { | |
| 3168 case ObjectMonitor::OM_INTERRUPTED: | |
| 3169 return JVMTI_ERROR_INTERRUPT; | |
| 3170 case ObjectMonitor::OM_ILLEGAL_MONITOR_STATE: | |
| 3171 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
| 3172 } | |
| 3173 assert(r == ObjectMonitor::OM_OK, "raw_wait should have worked"); | |
| 3174 if (r != ObjectMonitor::OM_OK) { // robustness | |
| 3175 return JVMTI_ERROR_INTERNAL; | |
| 3176 } | |
| 3177 | |
| 3178 return JVMTI_ERROR_NONE; | |
| 3179 } /* end RawMonitorWait */ | |
| 3180 | |
| 3181 | |
| 3182 // rmonitor - pre-checked for validity | |
| 3183 jvmtiError | |
| 3184 JvmtiEnv::RawMonitorNotify(JvmtiRawMonitor * rmonitor) { | |
| 3185 int r; | |
| 3186 Thread* thread = Thread::current(); | |
| 3187 | |
| 3188 if (thread->is_Java_thread()) { | |
| 3189 JavaThread* current_thread = (JavaThread*)thread; | |
| 3190 // Not really unknown but ThreadInVMfromNative does more than we want | |
| 3191 ThreadInVMfromUnknown __tiv; | |
| 3192 r = rmonitor->raw_notify(current_thread); | |
| 3193 } else { | |
| 3194 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
| 3195 r = rmonitor->raw_notify(thread); | |
| 3196 } else { | |
| 3197 ShouldNotReachHere(); | |
| 3198 } | |
| 3199 } | |
| 3200 | |
| 3201 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
| 3202 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
| 3203 } | |
| 3204 assert(r == ObjectMonitor::OM_OK, "raw_notify should have worked"); | |
| 3205 if (r != ObjectMonitor::OM_OK) { // robustness | |
| 3206 return JVMTI_ERROR_INTERNAL; | |
| 3207 } | |
| 3208 | |
| 3209 return JVMTI_ERROR_NONE; | |
| 3210 } /* end RawMonitorNotify */ | |
| 3211 | |
| 3212 | |
| 3213 // rmonitor - pre-checked for validity | |
| 3214 jvmtiError | |
| 3215 JvmtiEnv::RawMonitorNotifyAll(JvmtiRawMonitor * rmonitor) { | |
| 3216 int r; | |
| 3217 Thread* thread = Thread::current(); | |
| 3218 | |
| 3219 if (thread->is_Java_thread()) { | |
| 3220 JavaThread* current_thread = (JavaThread*)thread; | |
| 3221 ThreadInVMfromUnknown __tiv; | |
| 3222 r = rmonitor->raw_notifyAll(current_thread); | |
| 3223 } else { | |
| 3224 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
| 3225 r = rmonitor->raw_notifyAll(thread); | |
| 3226 } else { | |
| 3227 ShouldNotReachHere(); | |
| 3228 } | |
| 3229 } | |
| 3230 | |
| 3231 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
| 3232 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
| 3233 } | |
| 3234 assert(r == ObjectMonitor::OM_OK, "raw_notifyAll should have worked"); | |
| 3235 if (r != ObjectMonitor::OM_OK) { // robustness | |
| 3236 return JVMTI_ERROR_INTERNAL; | |
| 3237 } | |
| 3238 | |
| 3239 return JVMTI_ERROR_NONE; | |
| 3240 } /* end RawMonitorNotifyAll */ | |
| 3241 | |
| 3242 | |
| 3243 // | |
| 3244 // JNI Function Interception functions | |
| 3245 // | |
| 3246 | |
| 3247 | |
| 3248 // function_table - pre-checked for NULL | |
| 3249 jvmtiError | |
| 3250 JvmtiEnv::SetJNIFunctionTable(const jniNativeInterface* function_table) { | |
| 3251 // Copy jni function table at safepoint. | |
| 3252 VM_JNIFunctionTableCopier copier(function_table); | |
| 3253 VMThread::execute(&copier); | |
| 3254 | |
| 3255 return JVMTI_ERROR_NONE; | |
| 3256 } /* end SetJNIFunctionTable */ | |
| 3257 | |
| 3258 | |
| 3259 // function_table - pre-checked for NULL | |
| 3260 jvmtiError | |
| 3261 JvmtiEnv::GetJNIFunctionTable(jniNativeInterface** function_table) { | |
| 3262 *function_table=(jniNativeInterface*)jvmtiMalloc(sizeof(jniNativeInterface)); | |
| 3263 if (*function_table == NULL) | |
| 3264 return JVMTI_ERROR_OUT_OF_MEMORY; | |
| 3265 memcpy(*function_table,(JavaThread::current())->get_jni_functions(),sizeof(jniNativeInterface)); | |
| 3266 return JVMTI_ERROR_NONE; | |
| 3267 } /* end GetJNIFunctionTable */ | |
| 3268 | |
| 3269 | |
| 3270 // | |
| 3271 // Event Management functions | |
| 3272 // | |
| 3273 | |
| 3274 jvmtiError | |
| 3275 JvmtiEnv::GenerateEvents(jvmtiEvent event_type) { | |
| 3276 // can only generate two event types | |
| 3277 if (event_type != JVMTI_EVENT_COMPILED_METHOD_LOAD && | |
| 3278 event_type != JVMTI_EVENT_DYNAMIC_CODE_GENERATED) { | |
| 3279 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
| 3280 } | |
| 3281 | |
| 3282 // for compiled_method_load events we must check that the environment | |
| 3283 // has the can_generate_compiled_method_load_events capability. | |
| 3284 if (event_type == JVMTI_EVENT_COMPILED_METHOD_LOAD) { | |
| 3285 if (get_capabilities()->can_generate_compiled_method_load_events == 0) { | |
| 3286 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; | |
| 3287 } | |
| 3288 return JvmtiCodeBlobEvents::generate_compiled_method_load_events(this); | |
| 3289 } else { | |
| 3290 return JvmtiCodeBlobEvents::generate_dynamic_code_events(this); | |
| 3291 } | |
| 3292 | |
| 3293 } /* end GenerateEvents */ | |
| 3294 | |
| 3295 | |
| 3296 // | |
| 3297 // Extension Mechanism functions | |
| 3298 // | |
| 3299 | |
| 3300 // extension_count_ptr - pre-checked for NULL | |
| 3301 // extensions - pre-checked for NULL | |
| 3302 jvmtiError | |
| 3303 JvmtiEnv::GetExtensionFunctions(jint* extension_count_ptr, jvmtiExtensionFunctionInfo** extensions) { | |
| 3304 return JvmtiExtensions::get_functions(this, extension_count_ptr, extensions); | |
| 3305 } /* end GetExtensionFunctions */ | |
| 3306 | |
| 3307 | |
| 3308 // extension_count_ptr - pre-checked for NULL | |
| 3309 // extensions - pre-checked for NULL | |
| 3310 jvmtiError | |
| 3311 JvmtiEnv::GetExtensionEvents(jint* extension_count_ptr, jvmtiExtensionEventInfo** extensions) { | |
| 3312 return JvmtiExtensions::get_events(this, extension_count_ptr, extensions); | |
| 3313 } /* end GetExtensionEvents */ | |
| 3314 | |
| 3315 | |
| 3316 // callback - NULL is a valid value, must be checked | |
| 3317 jvmtiError | |
| 3318 JvmtiEnv::SetExtensionEventCallback(jint extension_event_index, jvmtiExtensionEvent callback) { | |
| 3319 return JvmtiExtensions::set_event_callback(this, extension_event_index, callback); | |
| 3320 } /* end SetExtensionEventCallback */ | |
| 3321 | |
| 3322 // | |
| 3323 // Timers functions | |
| 3324 // | |
| 3325 | |
| 3326 // info_ptr - pre-checked for NULL | |
| 3327 jvmtiError | |
| 3328 JvmtiEnv::GetCurrentThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) { | |
| 3329 os::current_thread_cpu_time_info(info_ptr); | |
| 3330 return JVMTI_ERROR_NONE; | |
| 3331 } /* end GetCurrentThreadCpuTimerInfo */ | |
| 3332 | |
| 3333 | |
| 3334 // nanos_ptr - pre-checked for NULL | |
| 3335 jvmtiError | |
| 3336 JvmtiEnv::GetCurrentThreadCpuTime(jlong* nanos_ptr) { | |
| 3337 *nanos_ptr = os::current_thread_cpu_time(); | |
| 3338 return JVMTI_ERROR_NONE; | |
| 3339 } /* end GetCurrentThreadCpuTime */ | |
| 3340 | |
| 3341 | |
| 3342 // info_ptr - pre-checked for NULL | |
| 3343 jvmtiError | |
| 3344 JvmtiEnv::GetThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) { | |
| 3345 os::thread_cpu_time_info(info_ptr); | |
| 3346 return JVMTI_ERROR_NONE; | |
| 3347 } /* end GetThreadCpuTimerInfo */ | |
| 3348 | |
| 3349 | |
| 3350 // Threads_lock NOT held, java_thread not protected by lock | |
| 3351 // java_thread - pre-checked | |
| 3352 // nanos_ptr - pre-checked for NULL | |
| 3353 jvmtiError | |
| 3354 JvmtiEnv::GetThreadCpuTime(JavaThread* java_thread, jlong* nanos_ptr) { | |
| 3355 *nanos_ptr = os::thread_cpu_time(java_thread); | |
| 3356 return JVMTI_ERROR_NONE; | |
| 3357 } /* end GetThreadCpuTime */ | |
| 3358 | |
| 3359 | |
| 3360 // info_ptr - pre-checked for NULL | |
| 3361 jvmtiError | |
| 3362 JvmtiEnv::GetTimerInfo(jvmtiTimerInfo* info_ptr) { | |
| 3363 os::javaTimeNanos_info(info_ptr); | |
| 3364 return JVMTI_ERROR_NONE; | |
| 3365 } /* end GetTimerInfo */ | |
| 3366 | |
| 3367 | |
| 3368 // nanos_ptr - pre-checked for NULL | |
| 3369 jvmtiError | |
| 3370 JvmtiEnv::GetTime(jlong* nanos_ptr) { | |
| 3371 *nanos_ptr = os::javaTimeNanos(); | |
| 3372 return JVMTI_ERROR_NONE; | |
| 3373 } /* end GetTime */ | |
| 3374 | |
| 3375 | |
| 3376 // processor_count_ptr - pre-checked for NULL | |
| 3377 jvmtiError | |
| 3378 JvmtiEnv::GetAvailableProcessors(jint* processor_count_ptr) { | |
| 3379 *processor_count_ptr = os::active_processor_count(); | |
| 3380 return JVMTI_ERROR_NONE; | |
| 3381 } /* end GetAvailableProcessors */ | |
| 3382 | |
| 3383 // | |
| 3384 // System Properties functions | |
| 3385 // | |
| 3386 | |
| 3387 // count_ptr - pre-checked for NULL | |
| 3388 // property_ptr - pre-checked for NULL | |
| 3389 jvmtiError | |
| 3390 JvmtiEnv::GetSystemProperties(jint* count_ptr, char*** property_ptr) { | |
| 3391 jvmtiError err = JVMTI_ERROR_NONE; | |
| 3392 | |
| 3393 *count_ptr = Arguments::PropertyList_count(Arguments::system_properties()); | |
| 3394 | |
| 3395 err = allocate(*count_ptr * sizeof(char *), (unsigned char **)property_ptr); | |
| 3396 if (err != JVMTI_ERROR_NONE) { | |
| 3397 return err; | |
| 3398 } | |
| 3399 int i = 0 ; | |
| 3400 for (SystemProperty* p = Arguments::system_properties(); p != NULL && i < *count_ptr; p = p->next(), i++) { | |
| 3401 const char *key = p->key(); | |
| 3402 char **tmp_value = *property_ptr+i; | |
| 3403 err = allocate((strlen(key)+1) * sizeof(char), (unsigned char**)tmp_value); | |
| 3404 if (err == JVMTI_ERROR_NONE) { | |
| 3405 strcpy(*tmp_value, key); | |
| 3406 } else { | |
| 3407 // clean up previously allocated memory. | |
| 3408 for (int j=0; j<i; j++) { | |
| 3409 Deallocate((unsigned char*)*property_ptr+j); | |
| 3410 } | |
| 3411 Deallocate((unsigned char*)property_ptr); | |
| 3412 break; | |
| 3413 } | |
| 3414 } | |
| 3415 return err; | |
| 3416 } /* end GetSystemProperties */ | |
| 3417 | |
| 3418 | |
| 3419 // property - pre-checked for NULL | |
| 3420 // value_ptr - pre-checked for NULL | |
| 3421 jvmtiError | |
| 3422 JvmtiEnv::GetSystemProperty(const char* property, char** value_ptr) { | |
| 3423 jvmtiError err = JVMTI_ERROR_NONE; | |
| 3424 const char *value; | |
| 3425 | |
| 3426 value = Arguments::PropertyList_get_value(Arguments::system_properties(), property); | |
| 3427 if (value == NULL) { | |
| 3428 err = JVMTI_ERROR_NOT_AVAILABLE; | |
| 3429 } else { | |
| 3430 err = allocate((strlen(value)+1) * sizeof(char), (unsigned char **)value_ptr); | |
| 3431 if (err == JVMTI_ERROR_NONE) { | |
| 3432 strcpy(*value_ptr, value); | |
| 3433 } | |
| 3434 } | |
| 3435 return err; | |
| 3436 } /* end GetSystemProperty */ | |
| 3437 | |
| 3438 | |
| 3439 // property - pre-checked for NULL | |
| 3440 // value - NULL is a valid value, must be checked | |
| 3441 jvmtiError | |
|
2100
b1a2afa37ec4
7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents:
2019
diff
changeset
|
3442 JvmtiEnv::SetSystemProperty(const char* property, const char* value_ptr) { |
| 0 | 3443 jvmtiError err =JVMTI_ERROR_NOT_AVAILABLE; |
| 3444 | |
| 3445 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
| 3446 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
|
3447 if (p->set_value((char *)value_ptr)) { |
| 0 | 3448 err = JVMTI_ERROR_NONE; |
| 3449 } | |
| 3450 } | |
| 3451 } | |
| 3452 return err; | |
| 3453 } /* end SetSystemProperty */ | |
| 3454 | |
| 3455 #endif // !JVMTI_KERNEL |