Mercurial > hg > graal-compiler
comparison src/share/vm/prims/jvmtiEnv.cpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | ea20d7ce26b0 9127aa69352e |
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-1:000000000000 | 0:a61af66fc99e |
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1 /* | |
2 * Copyright 2003-2007 Sun Microsystems, Inc. All Rights Reserved. | |
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 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 | |
26 # include "incls/_precompiled.incl" | |
27 # include "incls/_jvmtiEnv.cpp.incl" | |
28 | |
29 | |
30 #define FIXLATER 0 // REMOVE this when completed. | |
31 | |
32 // FIXLATER: hook into JvmtiTrace | |
33 #define TraceJVMTICalls false | |
34 | |
35 JvmtiEnv::JvmtiEnv() : JvmtiEnvBase() { | |
36 } | |
37 | |
38 JvmtiEnv::~JvmtiEnv() { | |
39 } | |
40 | |
41 JvmtiEnv* | |
42 JvmtiEnv::create_a_jvmti() { | |
43 return new JvmtiEnv(); | |
44 } | |
45 | |
46 // VM operation class to copy jni function table at safepoint. | |
47 // More than one java threads or jvmti agents may be reading/ | |
48 // modifying jni function tables. To reduce the risk of bad | |
49 // interaction b/w these threads it is copied at safepoint. | |
50 class VM_JNIFunctionTableCopier : public VM_Operation { | |
51 private: | |
52 const struct JNINativeInterface_ *_function_table; | |
53 public: | |
54 VM_JNIFunctionTableCopier(const struct JNINativeInterface_ *func_tbl) { | |
55 _function_table = func_tbl; | |
56 }; | |
57 | |
58 VMOp_Type type() const { return VMOp_JNIFunctionTableCopier; } | |
59 void doit() { | |
60 copy_jni_function_table(_function_table); | |
61 }; | |
62 }; | |
63 | |
64 // | |
65 // Do not change the "prefix" marker below, everything above it is copied | |
66 // unchanged into the filled stub, everything below is controlled by the | |
67 // stub filler (only method bodies are carried forward, and then only for | |
68 // functionality still in the spec). | |
69 // | |
70 // end file prefix | |
71 | |
72 // | |
73 // Memory Management functions | |
74 // | |
75 | |
76 // mem_ptr - pre-checked for NULL | |
77 jvmtiError | |
78 JvmtiEnv::Allocate(jlong size, unsigned char** mem_ptr) { | |
79 return allocate(size, mem_ptr); | |
80 } /* end Allocate */ | |
81 | |
82 | |
83 // mem - NULL is a valid value, must be checked | |
84 jvmtiError | |
85 JvmtiEnv::Deallocate(unsigned char* mem) { | |
86 return deallocate(mem); | |
87 } /* end Deallocate */ | |
88 | |
89 // Threads_lock NOT held, java_thread not protected by lock | |
90 // java_thread - pre-checked | |
91 // data - NULL is a valid value, must be checked | |
92 jvmtiError | |
93 JvmtiEnv::SetThreadLocalStorage(JavaThread* java_thread, const void* data) { | |
94 JvmtiThreadState* state = java_thread->jvmti_thread_state(); | |
95 if (state == NULL) { | |
96 if (data == NULL) { | |
97 // leaving state unset same as data set to NULL | |
98 return JVMTI_ERROR_NONE; | |
99 } | |
100 // otherwise, create the state | |
101 state = JvmtiThreadState::state_for(java_thread); | |
102 } | |
103 state->env_thread_state(this)->set_agent_thread_local_storage_data((void*)data); | |
104 return JVMTI_ERROR_NONE; | |
105 } /* end SetThreadLocalStorage */ | |
106 | |
107 | |
108 // Threads_lock NOT held | |
109 // thread - NOT pre-checked | |
110 // data_ptr - pre-checked for NULL | |
111 jvmtiError | |
112 JvmtiEnv::GetThreadLocalStorage(jthread thread, void** data_ptr) { | |
113 JavaThread* current_thread = JavaThread::current(); | |
114 if (thread == NULL) { | |
115 JvmtiThreadState* state = current_thread->jvmti_thread_state(); | |
116 *data_ptr = (state == NULL) ? NULL : | |
117 state->env_thread_state(this)->get_agent_thread_local_storage_data(); | |
118 } else { | |
119 | |
120 // jvmti_GetThreadLocalStorage is "in native" and doesn't transition | |
121 // the thread to _thread_in_vm. However, when the TLS for a thread | |
122 // other than the current thread is required we need to transition | |
123 // from native so as to resolve the jthread. | |
124 | |
125 ThreadInVMfromNative __tiv(current_thread); | |
126 __ENTRY(jvmtiError, JvmtiEnv::GetThreadLocalStorage , current_thread) | |
127 debug_only(VMNativeEntryWrapper __vew;) | |
128 | |
129 oop thread_oop = JNIHandles::resolve_external_guard(thread); | |
130 if (thread_oop == NULL) { | |
131 return JVMTI_ERROR_INVALID_THREAD; | |
132 } | |
133 if (!thread_oop->is_a(SystemDictionary::thread_klass())) { | |
134 return JVMTI_ERROR_INVALID_THREAD; | |
135 } | |
136 JavaThread* java_thread = java_lang_Thread::thread(thread_oop); | |
137 if (java_thread == NULL) { | |
138 return JVMTI_ERROR_THREAD_NOT_ALIVE; | |
139 } | |
140 JvmtiThreadState* state = java_thread->jvmti_thread_state(); | |
141 *data_ptr = (state == NULL) ? NULL : | |
142 state->env_thread_state(this)->get_agent_thread_local_storage_data(); | |
143 } | |
144 return JVMTI_ERROR_NONE; | |
145 } /* end GetThreadLocalStorage */ | |
146 | |
147 // | |
148 // Class functions | |
149 // | |
150 | |
151 // class_count_ptr - pre-checked for NULL | |
152 // classes_ptr - pre-checked for NULL | |
153 jvmtiError | |
154 JvmtiEnv::GetLoadedClasses(jint* class_count_ptr, jclass** classes_ptr) { | |
155 return JvmtiGetLoadedClasses::getLoadedClasses(this, class_count_ptr, classes_ptr); | |
156 } /* end GetLoadedClasses */ | |
157 | |
158 | |
159 // initiating_loader - NULL is a valid value, must be checked | |
160 // class_count_ptr - pre-checked for NULL | |
161 // classes_ptr - pre-checked for NULL | |
162 jvmtiError | |
163 JvmtiEnv::GetClassLoaderClasses(jobject initiating_loader, jint* class_count_ptr, jclass** classes_ptr) { | |
164 return JvmtiGetLoadedClasses::getClassLoaderClasses(this, initiating_loader, | |
165 class_count_ptr, classes_ptr); | |
166 } /* end GetClassLoaderClasses */ | |
167 | |
168 // k_mirror - may be primitive, this must be checked | |
169 // is_modifiable_class_ptr - pre-checked for NULL | |
170 jvmtiError | |
171 JvmtiEnv::IsModifiableClass(oop k_mirror, jboolean* is_modifiable_class_ptr) { | |
172 *is_modifiable_class_ptr = VM_RedefineClasses::is_modifiable_class(k_mirror)? | |
173 JNI_TRUE : JNI_FALSE; | |
174 return JVMTI_ERROR_NONE; | |
175 } /* end IsModifiableClass */ | |
176 | |
177 // class_count - pre-checked to be greater than or equal to 0 | |
178 // classes - pre-checked for NULL | |
179 jvmtiError | |
180 JvmtiEnv::RetransformClasses(jint class_count, const jclass* classes) { | |
181 //TODO: add locking | |
182 | |
183 int index; | |
184 JavaThread* current_thread = JavaThread::current(); | |
185 ResourceMark rm(current_thread); | |
186 | |
187 jvmtiClassDefinition* class_definitions = | |
188 NEW_RESOURCE_ARRAY(jvmtiClassDefinition, class_count); | |
189 NULL_CHECK(class_definitions, JVMTI_ERROR_OUT_OF_MEMORY); | |
190 | |
191 for (index = 0; index < class_count; index++) { | |
192 HandleMark hm(current_thread); | |
193 | |
194 jclass jcls = classes[index]; | |
195 oop k_mirror = JNIHandles::resolve_external_guard(jcls); | |
196 if (k_mirror == NULL) { | |
197 return JVMTI_ERROR_INVALID_CLASS; | |
198 } | |
199 if (!k_mirror->is_a(SystemDictionary::class_klass())) { | |
200 return JVMTI_ERROR_INVALID_CLASS; | |
201 } | |
202 | |
203 if (java_lang_Class::is_primitive(k_mirror)) { | |
204 return JVMTI_ERROR_UNMODIFIABLE_CLASS; | |
205 } | |
206 | |
207 klassOop k_oop = java_lang_Class::as_klassOop(k_mirror); | |
208 KlassHandle klass(current_thread, k_oop); | |
209 | |
210 jint status = klass->jvmti_class_status(); | |
211 if (status & (JVMTI_CLASS_STATUS_ERROR)) { | |
212 return JVMTI_ERROR_INVALID_CLASS; | |
213 } | |
214 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { | |
215 return JVMTI_ERROR_UNMODIFIABLE_CLASS; | |
216 } | |
217 | |
218 instanceKlassHandle ikh(current_thread, k_oop); | |
219 if (ikh->get_cached_class_file_bytes() == NULL) { | |
220 // not cached, we need to reconstitute the class file from VM representation | |
221 constantPoolHandle constants(current_thread, ikh->constants()); | |
222 ObjectLocker ol(constants, current_thread); // lock constant pool while we query it | |
223 | |
224 JvmtiClassFileReconstituter reconstituter(ikh); | |
225 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
226 return reconstituter.get_error(); | |
227 } | |
228 | |
229 class_definitions[index].class_byte_count = (jint)reconstituter.class_file_size(); | |
230 class_definitions[index].class_bytes = (unsigned char*) | |
231 reconstituter.class_file_bytes(); | |
232 } else { | |
233 // it is cached, get it from the cache | |
234 class_definitions[index].class_byte_count = ikh->get_cached_class_file_len(); | |
235 class_definitions[index].class_bytes = ikh->get_cached_class_file_bytes(); | |
236 } | |
237 class_definitions[index].klass = jcls; | |
238 } | |
239 VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_retransform); | |
240 VMThread::execute(&op); | |
241 return (op.check_error()); | |
242 } /* end RetransformClasses */ | |
243 | |
244 | |
245 // class_count - pre-checked to be greater than or equal to 0 | |
246 // class_definitions - pre-checked for NULL | |
247 jvmtiError | |
248 JvmtiEnv::RedefineClasses(jint class_count, const jvmtiClassDefinition* class_definitions) { | |
249 //TODO: add locking | |
250 VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_redefine); | |
251 VMThread::execute(&op); | |
252 return (op.check_error()); | |
253 } /* end RedefineClasses */ | |
254 | |
255 | |
256 // | |
257 // Object functions | |
258 // | |
259 | |
260 // size_ptr - pre-checked for NULL | |
261 jvmtiError | |
262 JvmtiEnv::GetObjectSize(jobject object, jlong* size_ptr) { | |
263 oop mirror = JNIHandles::resolve_external_guard(object); | |
264 NULL_CHECK(mirror, JVMTI_ERROR_INVALID_OBJECT); | |
265 | |
266 if (mirror->klass() == SystemDictionary::class_klass()) { | |
267 if (!java_lang_Class::is_primitive(mirror)) { | |
268 mirror = java_lang_Class::as_klassOop(mirror); | |
269 assert(mirror != NULL, "class for non-primitive mirror must exist"); | |
270 } | |
271 } | |
272 | |
273 *size_ptr = mirror->size() * wordSize; | |
274 return JVMTI_ERROR_NONE; | |
275 } /* end GetObjectSize */ | |
276 | |
277 // | |
278 // Method functions | |
279 // | |
280 | |
281 // prefix - NULL is a valid value, must be checked | |
282 jvmtiError | |
283 JvmtiEnv::SetNativeMethodPrefix(const char* prefix) { | |
284 return prefix == NULL? | |
285 SetNativeMethodPrefixes(0, NULL) : | |
286 SetNativeMethodPrefixes(1, (char**)&prefix); | |
287 } /* end SetNativeMethodPrefix */ | |
288 | |
289 | |
290 // prefix_count - pre-checked to be greater than or equal to 0 | |
291 // prefixes - pre-checked for NULL | |
292 jvmtiError | |
293 JvmtiEnv::SetNativeMethodPrefixes(jint prefix_count, char** prefixes) { | |
294 // Have to grab JVMTI thread state lock to be sure that some thread | |
295 // isn't accessing the prefixes at the same time we are setting them. | |
296 // No locks during VM bring-up. | |
297 if (Threads::number_of_threads() == 0) { | |
298 return set_native_method_prefixes(prefix_count, prefixes); | |
299 } else { | |
300 MutexLocker mu(JvmtiThreadState_lock); | |
301 return set_native_method_prefixes(prefix_count, prefixes); | |
302 } | |
303 } /* end SetNativeMethodPrefixes */ | |
304 | |
305 // | |
306 // Event Management functions | |
307 // | |
308 | |
309 // callbacks - NULL is a valid value, must be checked | |
310 // size_of_callbacks - pre-checked to be greater than or equal to 0 | |
311 jvmtiError | |
312 JvmtiEnv::SetEventCallbacks(const jvmtiEventCallbacks* callbacks, jint size_of_callbacks) { | |
313 JvmtiEventController::set_event_callbacks(this, callbacks, size_of_callbacks); | |
314 return JVMTI_ERROR_NONE; | |
315 } /* end SetEventCallbacks */ | |
316 | |
317 | |
318 // event_thread - NULL is a valid value, must be checked | |
319 jvmtiError | |
320 JvmtiEnv::SetEventNotificationMode(jvmtiEventMode mode, jvmtiEvent event_type, jthread event_thread, ...) { | |
321 JavaThread* java_thread = NULL; | |
322 if (event_thread != NULL) { | |
323 oop thread_oop = JNIHandles::resolve_external_guard(event_thread); | |
324 if (thread_oop == NULL) { | |
325 return JVMTI_ERROR_INVALID_THREAD; | |
326 } | |
327 if (!thread_oop->is_a(SystemDictionary::thread_klass())) { | |
328 return JVMTI_ERROR_INVALID_THREAD; | |
329 } | |
330 java_thread = java_lang_Thread::thread(thread_oop); | |
331 if (java_thread == NULL) { | |
332 return JVMTI_ERROR_THREAD_NOT_ALIVE; | |
333 } | |
334 } | |
335 | |
336 // event_type must be valid | |
337 if (!JvmtiEventController::is_valid_event_type(event_type)) { | |
338 return JVMTI_ERROR_INVALID_EVENT_TYPE; | |
339 } | |
340 | |
341 // global events cannot be controlled at thread level. | |
342 if (java_thread != NULL && JvmtiEventController::is_global_event(event_type)) { | |
343 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
344 } | |
345 | |
346 bool enabled = (mode == JVMTI_ENABLE); | |
347 | |
348 // assure that needed capabilities are present | |
349 if (enabled && !JvmtiUtil::has_event_capability(event_type, get_capabilities())) { | |
350 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; | |
351 } | |
352 | |
353 if (event_type == JVMTI_EVENT_CLASS_FILE_LOAD_HOOK && enabled) { | |
354 record_class_file_load_hook_enabled(); | |
355 } | |
356 JvmtiEventController::set_user_enabled(this, java_thread, event_type, enabled); | |
357 | |
358 return JVMTI_ERROR_NONE; | |
359 } /* end SetEventNotificationMode */ | |
360 | |
361 // | |
362 // Capability functions | |
363 // | |
364 | |
365 // capabilities_ptr - pre-checked for NULL | |
366 jvmtiError | |
367 JvmtiEnv::GetPotentialCapabilities(jvmtiCapabilities* capabilities_ptr) { | |
368 JvmtiManageCapabilities::get_potential_capabilities(get_capabilities(), | |
369 get_prohibited_capabilities(), | |
370 capabilities_ptr); | |
371 return JVMTI_ERROR_NONE; | |
372 } /* end GetPotentialCapabilities */ | |
373 | |
374 | |
375 // capabilities_ptr - pre-checked for NULL | |
376 jvmtiError | |
377 JvmtiEnv::AddCapabilities(const jvmtiCapabilities* capabilities_ptr) { | |
378 return JvmtiManageCapabilities::add_capabilities(get_capabilities(), | |
379 get_prohibited_capabilities(), | |
380 capabilities_ptr, | |
381 get_capabilities()); | |
382 } /* end AddCapabilities */ | |
383 | |
384 | |
385 // capabilities_ptr - pre-checked for NULL | |
386 jvmtiError | |
387 JvmtiEnv::RelinquishCapabilities(const jvmtiCapabilities* capabilities_ptr) { | |
388 JvmtiManageCapabilities::relinquish_capabilities(get_capabilities(), capabilities_ptr, get_capabilities()); | |
389 return JVMTI_ERROR_NONE; | |
390 } /* end RelinquishCapabilities */ | |
391 | |
392 | |
393 // capabilities_ptr - pre-checked for NULL | |
394 jvmtiError | |
395 JvmtiEnv::GetCapabilities(jvmtiCapabilities* capabilities_ptr) { | |
396 JvmtiManageCapabilities::copy_capabilities(get_capabilities(), capabilities_ptr); | |
397 return JVMTI_ERROR_NONE; | |
398 } /* end GetCapabilities */ | |
399 | |
400 // | |
401 // Class Loader Search functions | |
402 // | |
403 | |
404 // segment - pre-checked for NULL | |
405 jvmtiError | |
406 JvmtiEnv::AddToBootstrapClassLoaderSearch(const char* segment) { | |
407 jvmtiPhase phase = get_phase(); | |
408 if (phase == JVMTI_PHASE_ONLOAD) { | |
409 Arguments::append_sysclasspath(segment); | |
410 return JVMTI_ERROR_NONE; | |
411 } else { | |
412 assert(phase == JVMTI_PHASE_LIVE, "sanity check"); | |
413 | |
414 // create the zip entry | |
415 ClassPathZipEntry* zip_entry = ClassLoader::create_class_path_zip_entry(segment); | |
416 if (zip_entry == NULL) { | |
417 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
418 } | |
419 | |
420 // lock the loader | |
421 Thread* thread = Thread::current(); | |
422 HandleMark hm; | |
423 Handle loader_lock = Handle(thread, SystemDictionary::system_loader_lock()); | |
424 | |
425 ObjectLocker ol(loader_lock, thread); | |
426 | |
427 // add the jar file to the bootclasspath | |
428 if (TraceClassLoading) { | |
429 tty->print_cr("[Opened %s]", zip_entry->name()); | |
430 } | |
431 ClassLoader::add_to_list(zip_entry); | |
432 return JVMTI_ERROR_NONE; | |
433 } | |
434 | |
435 } /* end AddToBootstrapClassLoaderSearch */ | |
436 | |
437 | |
438 // segment - pre-checked for NULL | |
439 jvmtiError | |
440 JvmtiEnv::AddToSystemClassLoaderSearch(const char* segment) { | |
441 jvmtiPhase phase = get_phase(); | |
442 | |
443 if (phase == JVMTI_PHASE_ONLOAD) { | |
444 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
445 if (strcmp("java.class.path", p->key()) == 0) { | |
446 p->append_value(segment); | |
447 break; | |
448 } | |
449 } | |
450 return JVMTI_ERROR_NONE; | |
451 } else { | |
452 HandleMark hm; | |
453 | |
454 assert(phase == JVMTI_PHASE_LIVE, "sanity check"); | |
455 | |
456 // create the zip entry (which will open the zip file and hence | |
457 // check that the segment is indeed a zip file). | |
458 ClassPathZipEntry* zip_entry = ClassLoader::create_class_path_zip_entry(segment); | |
459 if (zip_entry == NULL) { | |
460 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
461 } | |
462 delete zip_entry; // no longer needed | |
463 | |
464 // lock the loader | |
465 Thread* THREAD = Thread::current(); | |
466 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); | |
467 | |
468 ObjectLocker ol(loader, THREAD); | |
469 | |
470 // need the path as java.lang.String | |
471 Handle path = java_lang_String::create_from_str(segment, THREAD); | |
472 if (HAS_PENDING_EXCEPTION) { | |
473 CLEAR_PENDING_EXCEPTION; | |
474 return JVMTI_ERROR_INTERNAL; | |
475 } | |
476 | |
477 instanceKlassHandle loader_ik(THREAD, loader->klass()); | |
478 | |
479 // Invoke the appendToClassPathForInstrumentation method - if the method | |
480 // is not found it means the loader doesn't support adding to the class path | |
481 // in the live phase. | |
482 { | |
483 JavaValue res(T_VOID); | |
484 JavaCalls::call_special(&res, | |
485 loader, | |
486 loader_ik, | |
487 vmSymbolHandles::appendToClassPathForInstrumentation_name(), | |
488 vmSymbolHandles::appendToClassPathForInstrumentation_signature(), | |
489 path, | |
490 THREAD); | |
491 if (HAS_PENDING_EXCEPTION) { | |
492 symbolOop ex_name = PENDING_EXCEPTION->klass()->klass_part()->name(); | |
493 CLEAR_PENDING_EXCEPTION; | |
494 | |
495 if (ex_name == vmSymbols::java_lang_NoSuchMethodError()) { | |
496 return JVMTI_ERROR_CLASS_LOADER_UNSUPPORTED; | |
497 } else { | |
498 return JVMTI_ERROR_INTERNAL; | |
499 } | |
500 } | |
501 } | |
502 | |
503 return JVMTI_ERROR_NONE; | |
504 } | |
505 } /* end AddToSystemClassLoaderSearch */ | |
506 | |
507 // | |
508 // General functions | |
509 // | |
510 | |
511 // phase_ptr - pre-checked for NULL | |
512 jvmtiError | |
513 JvmtiEnv::GetPhase(jvmtiPhase* phase_ptr) { | |
514 *phase_ptr = get_phase(); | |
515 return JVMTI_ERROR_NONE; | |
516 } /* end GetPhase */ | |
517 | |
518 | |
519 jvmtiError | |
520 JvmtiEnv::DisposeEnvironment() { | |
521 dispose(); | |
522 return JVMTI_ERROR_NONE; | |
523 } /* end DisposeEnvironment */ | |
524 | |
525 | |
526 // data - NULL is a valid value, must be checked | |
527 jvmtiError | |
528 JvmtiEnv::SetEnvironmentLocalStorage(const void* data) { | |
529 set_env_local_storage(data); | |
530 return JVMTI_ERROR_NONE; | |
531 } /* end SetEnvironmentLocalStorage */ | |
532 | |
533 | |
534 // data_ptr - pre-checked for NULL | |
535 jvmtiError | |
536 JvmtiEnv::GetEnvironmentLocalStorage(void** data_ptr) { | |
537 *data_ptr = (void*)get_env_local_storage(); | |
538 return JVMTI_ERROR_NONE; | |
539 } /* end GetEnvironmentLocalStorage */ | |
540 | |
541 // version_ptr - pre-checked for NULL | |
542 jvmtiError | |
543 JvmtiEnv::GetVersionNumber(jint* version_ptr) { | |
544 *version_ptr = JVMTI_VERSION; | |
545 return JVMTI_ERROR_NONE; | |
546 } /* end GetVersionNumber */ | |
547 | |
548 | |
549 // name_ptr - pre-checked for NULL | |
550 jvmtiError | |
551 JvmtiEnv::GetErrorName(jvmtiError error, char** name_ptr) { | |
552 if (error < JVMTI_ERROR_NONE || error > JVMTI_ERROR_MAX) { | |
553 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
554 } | |
555 const char *name = JvmtiUtil::error_name(error); | |
556 if (name == NULL) { | |
557 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
558 } | |
559 size_t len = strlen(name) + 1; | |
560 jvmtiError err = allocate(len, (unsigned char**)name_ptr); | |
561 if (err == JVMTI_ERROR_NONE) { | |
562 memcpy(*name_ptr, name, len); | |
563 } | |
564 return err; | |
565 } /* end GetErrorName */ | |
566 | |
567 | |
568 jvmtiError | |
569 JvmtiEnv::SetVerboseFlag(jvmtiVerboseFlag flag, jboolean value) { | |
570 switch (flag) { | |
571 case JVMTI_VERBOSE_OTHER: | |
572 // ignore | |
573 break; | |
574 case JVMTI_VERBOSE_CLASS: | |
575 TraceClassLoading = value != 0; | |
576 TraceClassUnloading = value != 0; | |
577 break; | |
578 case JVMTI_VERBOSE_GC: | |
579 PrintGC = value != 0; | |
580 TraceClassUnloading = value != 0; | |
581 break; | |
582 case JVMTI_VERBOSE_JNI: | |
583 PrintJNIResolving = value != 0; | |
584 break; | |
585 default: | |
586 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
587 }; | |
588 return JVMTI_ERROR_NONE; | |
589 } /* end SetVerboseFlag */ | |
590 | |
591 | |
592 // format_ptr - pre-checked for NULL | |
593 jvmtiError | |
594 JvmtiEnv::GetJLocationFormat(jvmtiJlocationFormat* format_ptr) { | |
595 *format_ptr = JVMTI_JLOCATION_JVMBCI; | |
596 return JVMTI_ERROR_NONE; | |
597 } /* end GetJLocationFormat */ | |
598 | |
599 #ifndef JVMTI_KERNEL | |
600 | |
601 // | |
602 // Thread functions | |
603 // | |
604 | |
605 // Threads_lock NOT held | |
606 // thread - NOT pre-checked | |
607 // thread_state_ptr - pre-checked for NULL | |
608 jvmtiError | |
609 JvmtiEnv::GetThreadState(jthread thread, jint* thread_state_ptr) { | |
610 jint state; | |
611 oop thread_oop; | |
612 JavaThread* thr; | |
613 | |
614 if (thread == NULL) { | |
615 thread_oop = JavaThread::current()->threadObj(); | |
616 } else { | |
617 thread_oop = JNIHandles::resolve_external_guard(thread); | |
618 } | |
619 | |
620 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::thread_klass())) { | |
621 return JVMTI_ERROR_INVALID_THREAD; | |
622 } | |
623 | |
624 // get most state bits | |
625 state = (jint)java_lang_Thread::get_thread_status(thread_oop); | |
626 | |
627 // add more state bits | |
628 thr = java_lang_Thread::thread(thread_oop); | |
629 if (thr != NULL) { | |
630 JavaThreadState jts = thr->thread_state(); | |
631 | |
632 if (thr->is_being_ext_suspended()) { | |
633 state |= JVMTI_THREAD_STATE_SUSPENDED; | |
634 } | |
635 if (jts == _thread_in_native) { | |
636 state |= JVMTI_THREAD_STATE_IN_NATIVE; | |
637 } | |
638 OSThread* osThread = thr->osthread(); | |
639 if (osThread != NULL && osThread->interrupted()) { | |
640 state |= JVMTI_THREAD_STATE_INTERRUPTED; | |
641 } | |
642 } | |
643 | |
644 *thread_state_ptr = state; | |
645 return JVMTI_ERROR_NONE; | |
646 } /* end GetThreadState */ | |
647 | |
648 | |
649 // thread_ptr - pre-checked for NULL | |
650 jvmtiError | |
651 JvmtiEnv::GetCurrentThread(jthread* thread_ptr) { | |
652 JavaThread* current_thread = JavaThread::current(); | |
653 *thread_ptr = (jthread)JNIHandles::make_local(current_thread, current_thread->threadObj()); | |
654 return JVMTI_ERROR_NONE; | |
655 } /* end GetCurrentThread */ | |
656 | |
657 | |
658 // threads_count_ptr - pre-checked for NULL | |
659 // threads_ptr - pre-checked for NULL | |
660 jvmtiError | |
661 JvmtiEnv::GetAllThreads(jint* threads_count_ptr, jthread** threads_ptr) { | |
662 int nthreads = 0; | |
663 Handle *thread_objs = NULL; | |
664 ResourceMark rm; | |
665 HandleMark hm; | |
666 | |
667 // enumerate threads (including agent threads) | |
668 ThreadsListEnumerator tle(Thread::current(), true); | |
669 nthreads = tle.num_threads(); | |
670 *threads_count_ptr = nthreads; | |
671 | |
672 if (nthreads == 0) { | |
673 *threads_ptr = NULL; | |
674 return JVMTI_ERROR_NONE; | |
675 } | |
676 | |
677 thread_objs = NEW_RESOURCE_ARRAY(Handle, nthreads); | |
678 NULL_CHECK(thread_objs, JVMTI_ERROR_OUT_OF_MEMORY); | |
679 | |
680 for (int i=0; i < nthreads; i++) { | |
681 thread_objs[i] = Handle(tle.get_threadObj(i)); | |
682 } | |
683 | |
684 // have to make global handles outside of Threads_lock | |
685 jthread *jthreads = new_jthreadArray(nthreads, thread_objs); | |
686 NULL_CHECK(jthreads, JVMTI_ERROR_OUT_OF_MEMORY); | |
687 | |
688 *threads_ptr = jthreads; | |
689 return JVMTI_ERROR_NONE; | |
690 } /* end GetAllThreads */ | |
691 | |
692 | |
693 // Threads_lock NOT held, java_thread not protected by lock | |
694 // java_thread - pre-checked | |
695 jvmtiError | |
696 JvmtiEnv::SuspendThread(JavaThread* java_thread) { | |
697 // don't allow hidden thread suspend request. | |
698 if (java_thread->is_hidden_from_external_view()) { | |
699 return (JVMTI_ERROR_NONE); | |
700 } | |
701 | |
702 { | |
703 MutexLockerEx ml(java_thread->SR_lock(), Mutex::_no_safepoint_check_flag); | |
704 if (java_thread->is_external_suspend()) { | |
705 // don't allow nested external suspend requests. | |
706 return (JVMTI_ERROR_THREAD_SUSPENDED); | |
707 } | |
708 if (java_thread->is_exiting()) { // thread is in the process of exiting | |
709 return (JVMTI_ERROR_THREAD_NOT_ALIVE); | |
710 } | |
711 java_thread->set_external_suspend(); | |
712 } | |
713 | |
714 if (!JvmtiSuspendControl::suspend(java_thread)) { | |
715 // the thread was in the process of exiting | |
716 return (JVMTI_ERROR_THREAD_NOT_ALIVE); | |
717 } | |
718 return JVMTI_ERROR_NONE; | |
719 } /* end SuspendThread */ | |
720 | |
721 | |
722 // request_count - pre-checked to be greater than or equal to 0 | |
723 // request_list - pre-checked for NULL | |
724 // results - pre-checked for NULL | |
725 jvmtiError | |
726 JvmtiEnv::SuspendThreadList(jint request_count, const jthread* request_list, jvmtiError* results) { | |
727 int needSafepoint = 0; // > 0 if we need a safepoint | |
728 for (int i = 0; i < request_count; i++) { | |
729 JavaThread *java_thread = get_JavaThread(request_list[i]); | |
730 if (java_thread == NULL) { | |
731 results[i] = JVMTI_ERROR_INVALID_THREAD; | |
732 continue; | |
733 } | |
734 // the thread has not yet run or has exited (not on threads list) | |
735 if (java_thread->threadObj() == NULL) { | |
736 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
737 continue; | |
738 } | |
739 if (java_lang_Thread::thread(java_thread->threadObj()) == NULL) { | |
740 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
741 continue; | |
742 } | |
743 // don't allow hidden thread suspend request. | |
744 if (java_thread->is_hidden_from_external_view()) { | |
745 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend | |
746 continue; | |
747 } | |
748 | |
749 { | |
750 MutexLockerEx ml(java_thread->SR_lock(), Mutex::_no_safepoint_check_flag); | |
751 if (java_thread->is_external_suspend()) { | |
752 // don't allow nested external suspend requests. | |
753 results[i] = JVMTI_ERROR_THREAD_SUSPENDED; | |
754 continue; | |
755 } | |
756 if (java_thread->is_exiting()) { // thread is in the process of exiting | |
757 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
758 continue; | |
759 } | |
760 java_thread->set_external_suspend(); | |
761 } | |
762 if (java_thread->thread_state() == _thread_in_native) { | |
763 // We need to try and suspend native threads here. Threads in | |
764 // other states will self-suspend on their next transition. | |
765 if (!JvmtiSuspendControl::suspend(java_thread)) { | |
766 // The thread was in the process of exiting. Force another | |
767 // safepoint to make sure that this thread transitions. | |
768 needSafepoint++; | |
769 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
770 continue; | |
771 } | |
772 } else { | |
773 needSafepoint++; | |
774 } | |
775 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend | |
776 } | |
777 if (needSafepoint > 0) { | |
778 VM_ForceSafepoint vfs; | |
779 VMThread::execute(&vfs); | |
780 } | |
781 // per-thread suspend results returned via results parameter | |
782 return JVMTI_ERROR_NONE; | |
783 } /* end SuspendThreadList */ | |
784 | |
785 | |
786 // Threads_lock NOT held, java_thread not protected by lock | |
787 // java_thread - pre-checked | |
788 jvmtiError | |
789 JvmtiEnv::ResumeThread(JavaThread* java_thread) { | |
790 // don't allow hidden thread resume request. | |
791 if (java_thread->is_hidden_from_external_view()) { | |
792 return JVMTI_ERROR_NONE; | |
793 } | |
794 | |
795 if (!java_thread->is_being_ext_suspended()) { | |
796 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
797 } | |
798 | |
799 if (!JvmtiSuspendControl::resume(java_thread)) { | |
800 return JVMTI_ERROR_INTERNAL; | |
801 } | |
802 return JVMTI_ERROR_NONE; | |
803 } /* end ResumeThread */ | |
804 | |
805 | |
806 // request_count - pre-checked to be greater than or equal to 0 | |
807 // request_list - pre-checked for NULL | |
808 // results - pre-checked for NULL | |
809 jvmtiError | |
810 JvmtiEnv::ResumeThreadList(jint request_count, const jthread* request_list, jvmtiError* results) { | |
811 for (int i = 0; i < request_count; i++) { | |
812 JavaThread *java_thread = get_JavaThread(request_list[i]); | |
813 if (java_thread == NULL) { | |
814 results[i] = JVMTI_ERROR_INVALID_THREAD; | |
815 continue; | |
816 } | |
817 // don't allow hidden thread resume request. | |
818 if (java_thread->is_hidden_from_external_view()) { | |
819 results[i] = JVMTI_ERROR_NONE; // indicate successful resume | |
820 continue; | |
821 } | |
822 if (!java_thread->is_being_ext_suspended()) { | |
823 results[i] = JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
824 continue; | |
825 } | |
826 | |
827 if (!JvmtiSuspendControl::resume(java_thread)) { | |
828 results[i] = JVMTI_ERROR_INTERNAL; | |
829 continue; | |
830 } | |
831 | |
832 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend | |
833 } | |
834 // per-thread resume results returned via results parameter | |
835 return JVMTI_ERROR_NONE; | |
836 } /* end ResumeThreadList */ | |
837 | |
838 | |
839 // Threads_lock NOT held, java_thread not protected by lock | |
840 // java_thread - pre-checked | |
841 jvmtiError | |
842 JvmtiEnv::StopThread(JavaThread* java_thread, jobject exception) { | |
843 oop e = JNIHandles::resolve_external_guard(exception); | |
844 NULL_CHECK(e, JVMTI_ERROR_NULL_POINTER); | |
845 | |
846 JavaThread::send_async_exception(java_thread->threadObj(), e); | |
847 | |
848 return JVMTI_ERROR_NONE; | |
849 | |
850 } /* end StopThread */ | |
851 | |
852 | |
853 // Threads_lock NOT held | |
854 // thread - NOT pre-checked | |
855 jvmtiError | |
856 JvmtiEnv::InterruptThread(jthread thread) { | |
857 oop thread_oop = JNIHandles::resolve_external_guard(thread); | |
858 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::thread_klass())) | |
859 return JVMTI_ERROR_INVALID_THREAD; | |
860 | |
861 JavaThread* current_thread = JavaThread::current(); | |
862 | |
863 // Todo: this is a duplicate of JVM_Interrupt; share code in future | |
864 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
865 MutexLockerEx ml(current_thread->threadObj() == thread_oop ? NULL : Threads_lock); | |
866 // We need to re-resolve the java_thread, since a GC might have happened during the | |
867 // acquire of the lock | |
868 | |
869 JavaThread* java_thread = java_lang_Thread::thread(JNIHandles::resolve_external_guard(thread)); | |
870 NULL_CHECK(java_thread, JVMTI_ERROR_THREAD_NOT_ALIVE); | |
871 | |
872 Thread::interrupt(java_thread); | |
873 | |
874 return JVMTI_ERROR_NONE; | |
875 } /* end InterruptThread */ | |
876 | |
877 | |
878 // Threads_lock NOT held | |
879 // thread - NOT pre-checked | |
880 // info_ptr - pre-checked for NULL | |
881 jvmtiError | |
882 JvmtiEnv::GetThreadInfo(jthread thread, jvmtiThreadInfo* info_ptr) { | |
883 ResourceMark rm; | |
884 HandleMark hm; | |
885 | |
886 JavaThread* current_thread = JavaThread::current(); | |
887 | |
888 // if thread is NULL the current thread is used | |
889 oop thread_oop; | |
890 if (thread == NULL) { | |
891 thread_oop = current_thread->threadObj(); | |
892 } else { | |
893 thread_oop = JNIHandles::resolve_external_guard(thread); | |
894 } | |
895 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::thread_klass())) | |
896 return JVMTI_ERROR_INVALID_THREAD; | |
897 | |
898 Handle thread_obj(current_thread, thread_oop); | |
899 typeArrayHandle name; | |
900 ThreadPriority priority; | |
901 Handle thread_group; | |
902 Handle context_class_loader; | |
903 bool is_daemon; | |
904 | |
905 { MutexLocker mu(Threads_lock); | |
906 | |
907 name = typeArrayHandle(current_thread, java_lang_Thread::name(thread_obj())); | |
908 priority = java_lang_Thread::priority(thread_obj()); | |
909 thread_group = Handle(current_thread, java_lang_Thread::threadGroup(thread_obj())); | |
910 is_daemon = java_lang_Thread::is_daemon(thread_obj()); | |
911 | |
912 oop loader = java_lang_Thread::context_class_loader(thread_obj()); | |
913 context_class_loader = Handle(current_thread, loader); | |
914 } | |
915 { const char *n; | |
916 | |
917 if (name() != NULL) { | |
918 n = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length()); | |
919 } else { | |
920 n = UNICODE::as_utf8(NULL, 0); | |
921 } | |
922 | |
923 info_ptr->name = (char *) jvmtiMalloc(strlen(n)+1); | |
924 if (info_ptr->name == NULL) | |
925 return JVMTI_ERROR_OUT_OF_MEMORY; | |
926 | |
927 strcpy(info_ptr->name, n); | |
928 } | |
929 info_ptr->is_daemon = is_daemon; | |
930 info_ptr->priority = priority; | |
931 | |
932 info_ptr->context_class_loader = (context_class_loader.is_null()) ? NULL : | |
933 jni_reference(context_class_loader); | |
934 info_ptr->thread_group = jni_reference(thread_group); | |
935 | |
936 return JVMTI_ERROR_NONE; | |
937 } /* end GetThreadInfo */ | |
938 | |
939 | |
940 // Threads_lock NOT held, java_thread not protected by lock | |
941 // java_thread - pre-checked | |
942 // owned_monitor_count_ptr - pre-checked for NULL | |
943 // owned_monitors_ptr - pre-checked for NULL | |
944 jvmtiError | |
945 JvmtiEnv::GetOwnedMonitorInfo(JavaThread* java_thread, jint* owned_monitor_count_ptr, jobject** owned_monitors_ptr) { | |
946 jvmtiError err = JVMTI_ERROR_NONE; | |
947 JavaThread* calling_thread = JavaThread::current(); | |
948 | |
949 // growable array of jvmti monitors info on the C-heap | |
950 GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list = | |
951 new (ResourceObj::C_HEAP) GrowableArray<jvmtiMonitorStackDepthInfo*>(1, true); | |
952 | |
953 uint32_t debug_bits = 0; | |
954 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
955 err = get_owned_monitors(calling_thread, java_thread, owned_monitors_list); | |
956 } else { | |
957 // JVMTI get monitors info at safepoint. Do not require target thread to | |
958 // be suspended. | |
959 VM_GetOwnedMonitorInfo op(this, calling_thread, java_thread, owned_monitors_list); | |
960 VMThread::execute(&op); | |
961 err = op.result(); | |
962 } | |
963 jint owned_monitor_count = owned_monitors_list->length(); | |
964 if (err == JVMTI_ERROR_NONE) { | |
965 if ((err = allocate(owned_monitor_count * sizeof(jobject *), | |
966 (unsigned char**)owned_monitors_ptr)) == JVMTI_ERROR_NONE) { | |
967 // copy into the returned array | |
968 for (int i = 0; i < owned_monitor_count; i++) { | |
969 (*owned_monitors_ptr)[i] = | |
970 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->monitor; | |
971 } | |
972 *owned_monitor_count_ptr = owned_monitor_count; | |
973 } | |
974 } | |
975 // clean up. | |
976 for (int i = 0; i < owned_monitor_count; i++) { | |
977 deallocate((unsigned char*)owned_monitors_list->at(i)); | |
978 } | |
979 delete owned_monitors_list; | |
980 | |
981 return err; | |
982 } /* end GetOwnedMonitorInfo */ | |
983 | |
984 | |
985 // Threads_lock NOT held, java_thread not protected by lock | |
986 // java_thread - pre-checked | |
987 // monitor_info_count_ptr - pre-checked for NULL | |
988 // monitor_info_ptr - pre-checked for NULL | |
989 jvmtiError | |
990 JvmtiEnv::GetOwnedMonitorStackDepthInfo(JavaThread* java_thread, jint* monitor_info_count_ptr, jvmtiMonitorStackDepthInfo** monitor_info_ptr) { | |
991 jvmtiError err = JVMTI_ERROR_NONE; | |
992 JavaThread* calling_thread = JavaThread::current(); | |
993 | |
994 // growable array of jvmti monitors info on the C-heap | |
995 GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list = | |
996 new (ResourceObj::C_HEAP) GrowableArray<jvmtiMonitorStackDepthInfo*>(1, true); | |
997 | |
998 uint32_t debug_bits = 0; | |
999 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
1000 err = get_owned_monitors(calling_thread, java_thread, owned_monitors_list); | |
1001 } else { | |
1002 // JVMTI get owned monitors info at safepoint. Do not require target thread to | |
1003 // be suspended. | |
1004 VM_GetOwnedMonitorInfo op(this, calling_thread, java_thread, owned_monitors_list); | |
1005 VMThread::execute(&op); | |
1006 err = op.result(); | |
1007 } | |
1008 | |
1009 jint owned_monitor_count = owned_monitors_list->length(); | |
1010 if (err == JVMTI_ERROR_NONE) { | |
1011 if ((err = allocate(owned_monitor_count * sizeof(jvmtiMonitorStackDepthInfo), | |
1012 (unsigned char**)monitor_info_ptr)) == JVMTI_ERROR_NONE) { | |
1013 // copy to output array. | |
1014 for (int i = 0; i < owned_monitor_count; i++) { | |
1015 (*monitor_info_ptr)[i].monitor = | |
1016 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->monitor; | |
1017 (*monitor_info_ptr)[i].stack_depth = | |
1018 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->stack_depth; | |
1019 } | |
1020 } | |
1021 *monitor_info_count_ptr = owned_monitor_count; | |
1022 } | |
1023 | |
1024 // clean up. | |
1025 for (int i = 0; i < owned_monitor_count; i++) { | |
1026 deallocate((unsigned char*)owned_monitors_list->at(i)); | |
1027 } | |
1028 delete owned_monitors_list; | |
1029 | |
1030 return err; | |
1031 } /* end GetOwnedMonitorStackDepthInfo */ | |
1032 | |
1033 | |
1034 // Threads_lock NOT held, java_thread not protected by lock | |
1035 // java_thread - pre-checked | |
1036 // monitor_ptr - pre-checked for NULL | |
1037 jvmtiError | |
1038 JvmtiEnv::GetCurrentContendedMonitor(JavaThread* java_thread, jobject* monitor_ptr) { | |
1039 jvmtiError err = JVMTI_ERROR_NONE; | |
1040 uint32_t debug_bits = 0; | |
1041 JavaThread* calling_thread = JavaThread::current(); | |
1042 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
1043 err = get_current_contended_monitor(calling_thread, java_thread, monitor_ptr); | |
1044 } else { | |
1045 // get contended monitor information at safepoint. | |
1046 VM_GetCurrentContendedMonitor op(this, calling_thread, java_thread, monitor_ptr); | |
1047 VMThread::execute(&op); | |
1048 err = op.result(); | |
1049 } | |
1050 return err; | |
1051 } /* end GetCurrentContendedMonitor */ | |
1052 | |
1053 | |
1054 // Threads_lock NOT held | |
1055 // thread - NOT pre-checked | |
1056 // proc - pre-checked for NULL | |
1057 // arg - NULL is a valid value, must be checked | |
1058 jvmtiError | |
1059 JvmtiEnv::RunAgentThread(jthread thread, jvmtiStartFunction proc, const void* arg, jint priority) { | |
1060 oop thread_oop = JNIHandles::resolve_external_guard(thread); | |
1061 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::thread_klass())) { | |
1062 return JVMTI_ERROR_INVALID_THREAD; | |
1063 } | |
1064 if (priority < JVMTI_THREAD_MIN_PRIORITY || priority > JVMTI_THREAD_MAX_PRIORITY) { | |
1065 return JVMTI_ERROR_INVALID_PRIORITY; | |
1066 } | |
1067 | |
1068 //Thread-self | |
1069 JavaThread* current_thread = JavaThread::current(); | |
1070 | |
1071 Handle thread_hndl(current_thread, thread_oop); | |
1072 { | |
1073 MutexLocker mu(Threads_lock); // grab Threads_lock | |
1074 | |
1075 JvmtiAgentThread *new_thread = new JvmtiAgentThread(this, proc, arg); | |
1076 | |
1077 // At this point it may be possible that no osthread was created for the | |
1078 // JavaThread due to lack of memory. | |
1079 if (new_thread == NULL || new_thread->osthread() == NULL) { | |
1080 if (new_thread) delete new_thread; | |
1081 return JVMTI_ERROR_OUT_OF_MEMORY; | |
1082 } | |
1083 | |
1084 java_lang_Thread::set_thread(thread_hndl(), new_thread); | |
1085 java_lang_Thread::set_priority(thread_hndl(), (ThreadPriority)priority); | |
1086 java_lang_Thread::set_daemon(thread_hndl()); | |
1087 | |
1088 new_thread->set_threadObj(thread_hndl()); | |
1089 Threads::add(new_thread); | |
1090 Thread::start(new_thread); | |
1091 } // unlock Threads_lock | |
1092 | |
1093 return JVMTI_ERROR_NONE; | |
1094 } /* end RunAgentThread */ | |
1095 | |
1096 // | |
1097 // Thread Group functions | |
1098 // | |
1099 | |
1100 // group_count_ptr - pre-checked for NULL | |
1101 // groups_ptr - pre-checked for NULL | |
1102 jvmtiError | |
1103 JvmtiEnv::GetTopThreadGroups(jint* group_count_ptr, jthreadGroup** groups_ptr) { | |
1104 JavaThread* current_thread = JavaThread::current(); | |
1105 | |
1106 // Only one top level thread group now. | |
1107 *group_count_ptr = 1; | |
1108 | |
1109 // Allocate memory to store global-refs to the thread groups. | |
1110 // Assume this area is freed by caller. | |
1111 *groups_ptr = (jthreadGroup *) jvmtiMalloc((sizeof(jthreadGroup)) * (*group_count_ptr)); | |
1112 | |
1113 NULL_CHECK(*groups_ptr, JVMTI_ERROR_OUT_OF_MEMORY); | |
1114 | |
1115 // Convert oop to Handle, then convert Handle to global-ref. | |
1116 { | |
1117 HandleMark hm(current_thread); | |
1118 Handle system_thread_group(current_thread, Universe::system_thread_group()); | |
1119 *groups_ptr[0] = jni_reference(system_thread_group); | |
1120 } | |
1121 | |
1122 return JVMTI_ERROR_NONE; | |
1123 } /* end GetTopThreadGroups */ | |
1124 | |
1125 | |
1126 // info_ptr - pre-checked for NULL | |
1127 jvmtiError | |
1128 JvmtiEnv::GetThreadGroupInfo(jthreadGroup group, jvmtiThreadGroupInfo* info_ptr) { | |
1129 ResourceMark rm; | |
1130 HandleMark hm; | |
1131 | |
1132 JavaThread* current_thread = JavaThread::current(); | |
1133 | |
1134 Handle group_obj (current_thread, JNIHandles::resolve_external_guard(group)); | |
1135 NULL_CHECK(group_obj(), JVMTI_ERROR_INVALID_THREAD_GROUP); | |
1136 | |
1137 typeArrayHandle name; | |
1138 Handle parent_group; | |
1139 bool is_daemon; | |
1140 ThreadPriority max_priority; | |
1141 | |
1142 { MutexLocker mu(Threads_lock); | |
1143 | |
1144 name = typeArrayHandle(current_thread, | |
1145 java_lang_ThreadGroup::name(group_obj())); | |
1146 parent_group = Handle(current_thread, java_lang_ThreadGroup::parent(group_obj())); | |
1147 is_daemon = java_lang_ThreadGroup::is_daemon(group_obj()); | |
1148 max_priority = java_lang_ThreadGroup::maxPriority(group_obj()); | |
1149 } | |
1150 | |
1151 info_ptr->is_daemon = is_daemon; | |
1152 info_ptr->max_priority = max_priority; | |
1153 info_ptr->parent = jni_reference(parent_group); | |
1154 | |
1155 if (name() != NULL) { | |
1156 const char* n = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length()); | |
1157 info_ptr->name = (char *)jvmtiMalloc(strlen(n)+1); | |
1158 NULL_CHECK(info_ptr->name, JVMTI_ERROR_OUT_OF_MEMORY); | |
1159 strcpy(info_ptr->name, n); | |
1160 } else { | |
1161 info_ptr->name = NULL; | |
1162 } | |
1163 | |
1164 return JVMTI_ERROR_NONE; | |
1165 } /* end GetThreadGroupInfo */ | |
1166 | |
1167 | |
1168 // thread_count_ptr - pre-checked for NULL | |
1169 // threads_ptr - pre-checked for NULL | |
1170 // group_count_ptr - pre-checked for NULL | |
1171 // groups_ptr - pre-checked for NULL | |
1172 jvmtiError | |
1173 JvmtiEnv::GetThreadGroupChildren(jthreadGroup group, jint* thread_count_ptr, jthread** threads_ptr, jint* group_count_ptr, jthreadGroup** groups_ptr) { | |
1174 JavaThread* current_thread = JavaThread::current(); | |
1175 oop group_obj = (oop) JNIHandles::resolve_external_guard(group); | |
1176 NULL_CHECK(group_obj, JVMTI_ERROR_INVALID_THREAD_GROUP); | |
1177 | |
1178 Handle *thread_objs = NULL; | |
1179 Handle *group_objs = NULL; | |
1180 int nthreads = 0; | |
1181 int ngroups = 0; | |
1182 int hidden_threads = 0; | |
1183 | |
1184 ResourceMark rm; | |
1185 HandleMark hm; | |
1186 | |
1187 Handle group_hdl(current_thread, group_obj); | |
1188 | |
1189 { MutexLocker mu(Threads_lock); | |
1190 | |
1191 nthreads = java_lang_ThreadGroup::nthreads(group_hdl()); | |
1192 ngroups = java_lang_ThreadGroup::ngroups(group_hdl()); | |
1193 | |
1194 if (nthreads > 0) { | |
1195 objArrayOop threads = java_lang_ThreadGroup::threads(group_hdl()); | |
1196 assert(nthreads <= threads->length(), "too many threads"); | |
1197 thread_objs = NEW_RESOURCE_ARRAY(Handle,nthreads); | |
1198 for (int i=0, j=0; i<nthreads; i++) { | |
1199 oop thread_obj = threads->obj_at(i); | |
1200 assert(thread_obj != NULL, "thread_obj is NULL"); | |
1201 JavaThread *javathread = java_lang_Thread::thread(thread_obj); | |
1202 // Filter out hidden java threads. | |
1203 if (javathread != NULL && javathread->is_hidden_from_external_view()) { | |
1204 hidden_threads++; | |
1205 continue; | |
1206 } | |
1207 thread_objs[j++] = Handle(current_thread, thread_obj); | |
1208 } | |
1209 nthreads -= hidden_threads; | |
1210 } | |
1211 if (ngroups > 0) { | |
1212 objArrayOop groups = java_lang_ThreadGroup::groups(group_hdl()); | |
1213 assert(ngroups <= groups->length(), "too many threads"); | |
1214 group_objs = NEW_RESOURCE_ARRAY(Handle,ngroups); | |
1215 for (int i=0; i<ngroups; i++) { | |
1216 oop group_obj = groups->obj_at(i); | |
1217 assert(group_obj != NULL, "group_obj != NULL"); | |
1218 group_objs[i] = Handle(current_thread, group_obj); | |
1219 } | |
1220 } | |
1221 } | |
1222 | |
1223 // have to make global handles outside of Threads_lock | |
1224 *group_count_ptr = ngroups; | |
1225 *thread_count_ptr = nthreads; | |
1226 *threads_ptr = new_jthreadArray(nthreads, thread_objs); | |
1227 *groups_ptr = new_jthreadGroupArray(ngroups, group_objs); | |
1228 if ((nthreads > 0) && (*threads_ptr == NULL)) { | |
1229 return JVMTI_ERROR_OUT_OF_MEMORY; | |
1230 } | |
1231 if ((ngroups > 0) && (*groups_ptr == NULL)) { | |
1232 return JVMTI_ERROR_OUT_OF_MEMORY; | |
1233 } | |
1234 | |
1235 return JVMTI_ERROR_NONE; | |
1236 } /* end GetThreadGroupChildren */ | |
1237 | |
1238 | |
1239 // | |
1240 // Stack Frame functions | |
1241 // | |
1242 | |
1243 // Threads_lock NOT held, java_thread not protected by lock | |
1244 // java_thread - pre-checked | |
1245 // max_frame_count - pre-checked to be greater than or equal to 0 | |
1246 // frame_buffer - pre-checked for NULL | |
1247 // count_ptr - pre-checked for NULL | |
1248 jvmtiError | |
1249 JvmtiEnv::GetStackTrace(JavaThread* java_thread, jint start_depth, jint max_frame_count, jvmtiFrameInfo* frame_buffer, jint* count_ptr) { | |
1250 jvmtiError err = JVMTI_ERROR_NONE; | |
1251 uint32_t debug_bits = 0; | |
1252 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
1253 err = get_stack_trace(java_thread, start_depth, max_frame_count, frame_buffer, count_ptr); | |
1254 } else { | |
1255 // JVMTI get stack trace at safepoint. Do not require target thread to | |
1256 // be suspended. | |
1257 VM_GetStackTrace op(this, java_thread, start_depth, max_frame_count, frame_buffer, count_ptr); | |
1258 VMThread::execute(&op); | |
1259 err = op.result(); | |
1260 } | |
1261 | |
1262 return err; | |
1263 } /* end GetStackTrace */ | |
1264 | |
1265 | |
1266 // max_frame_count - pre-checked to be greater than or equal to 0 | |
1267 // stack_info_ptr - pre-checked for NULL | |
1268 // thread_count_ptr - pre-checked for NULL | |
1269 jvmtiError | |
1270 JvmtiEnv::GetAllStackTraces(jint max_frame_count, jvmtiStackInfo** stack_info_ptr, jint* thread_count_ptr) { | |
1271 jvmtiError err = JVMTI_ERROR_NONE; | |
1272 JavaThread* calling_thread = JavaThread::current(); | |
1273 | |
1274 // JVMTI get stack traces at safepoint. | |
1275 VM_GetAllStackTraces op(this, calling_thread, max_frame_count); | |
1276 VMThread::execute(&op); | |
1277 *thread_count_ptr = op.final_thread_count(); | |
1278 *stack_info_ptr = op.stack_info(); | |
1279 err = op.result(); | |
1280 return err; | |
1281 } /* end GetAllStackTraces */ | |
1282 | |
1283 | |
1284 // thread_count - pre-checked to be greater than or equal to 0 | |
1285 // thread_list - pre-checked for NULL | |
1286 // max_frame_count - pre-checked to be greater than or equal to 0 | |
1287 // stack_info_ptr - pre-checked for NULL | |
1288 jvmtiError | |
1289 JvmtiEnv::GetThreadListStackTraces(jint thread_count, const jthread* thread_list, jint max_frame_count, jvmtiStackInfo** stack_info_ptr) { | |
1290 jvmtiError err = JVMTI_ERROR_NONE; | |
1291 // JVMTI get stack traces at safepoint. | |
1292 VM_GetThreadListStackTraces op(this, thread_count, thread_list, max_frame_count); | |
1293 VMThread::execute(&op); | |
1294 err = op.result(); | |
1295 if (err == JVMTI_ERROR_NONE) { | |
1296 *stack_info_ptr = op.stack_info(); | |
1297 } | |
1298 return err; | |
1299 } /* end GetThreadListStackTraces */ | |
1300 | |
1301 | |
1302 // Threads_lock NOT held, java_thread not protected by lock | |
1303 // java_thread - pre-checked | |
1304 // count_ptr - pre-checked for NULL | |
1305 jvmtiError | |
1306 JvmtiEnv::GetFrameCount(JavaThread* java_thread, jint* count_ptr) { | |
1307 jvmtiError err = JVMTI_ERROR_NONE; | |
1308 | |
1309 // retrieve or create JvmtiThreadState. | |
1310 JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread); | |
1311 uint32_t debug_bits = 0; | |
1312 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
1313 err = get_frame_count(state, count_ptr); | |
1314 } else { | |
1315 // get java stack frame count at safepoint. | |
1316 VM_GetFrameCount op(this, state, count_ptr); | |
1317 VMThread::execute(&op); | |
1318 err = op.result(); | |
1319 } | |
1320 return err; | |
1321 } /* end GetFrameCount */ | |
1322 | |
1323 | |
1324 // Threads_lock NOT held, java_thread not protected by lock | |
1325 // java_thread - pre-checked | |
1326 jvmtiError | |
1327 JvmtiEnv::PopFrame(JavaThread* java_thread) { | |
1328 JavaThread* current_thread = JavaThread::current(); | |
1329 HandleMark hm(current_thread); | |
1330 uint32_t debug_bits = 0; | |
1331 | |
1332 // Check if java_thread is fully suspended | |
1333 if (!is_thread_fully_suspended(java_thread, true /* wait for suspend completion */, &debug_bits)) { | |
1334 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
1335 } | |
1336 // Check to see if a PopFrame was already in progress | |
1337 if (java_thread->popframe_condition() != JavaThread::popframe_inactive) { | |
1338 // Probably possible for JVMTI clients to trigger this, but the | |
1339 // JPDA backend shouldn't allow this to happen | |
1340 return JVMTI_ERROR_INTERNAL; | |
1341 } | |
1342 | |
1343 { | |
1344 // Was workaround bug | |
1345 // 4812902: popFrame hangs if the method is waiting at a synchronize | |
1346 // Catch this condition and return an error to avoid hanging. | |
1347 // Now JVMTI spec allows an implementation to bail out with an opaque frame error. | |
1348 OSThread* osThread = java_thread->osthread(); | |
1349 if (osThread->get_state() == MONITOR_WAIT) { | |
1350 return JVMTI_ERROR_OPAQUE_FRAME; | |
1351 } | |
1352 } | |
1353 | |
1354 { | |
1355 ResourceMark rm(current_thread); | |
1356 // Check if there are more than one Java frame in this thread, that the top two frames | |
1357 // are Java (not native) frames, and that there is no intervening VM frame | |
1358 int frame_count = 0; | |
1359 bool is_interpreted[2]; | |
1360 intptr_t *frame_sp[2]; | |
1361 // The 2-nd arg of constructor is needed to stop iterating at java entry frame. | |
1362 for (vframeStream vfs(java_thread, true); !vfs.at_end(); vfs.next()) { | |
1363 methodHandle mh(current_thread, vfs.method()); | |
1364 if (mh->is_native()) return(JVMTI_ERROR_OPAQUE_FRAME); | |
1365 is_interpreted[frame_count] = vfs.is_interpreted_frame(); | |
1366 frame_sp[frame_count] = vfs.frame_id(); | |
1367 if (++frame_count > 1) break; | |
1368 } | |
1369 if (frame_count < 2) { | |
1370 // We haven't found two adjacent non-native Java frames on the top. | |
1371 // There can be two situations here: | |
1372 // 1. There are no more java frames | |
1373 // 2. Two top java frames are separated by non-java native frames | |
1374 if(vframeFor(java_thread, 1) == NULL) { | |
1375 return JVMTI_ERROR_NO_MORE_FRAMES; | |
1376 } else { | |
1377 // Intervening non-java native or VM frames separate java frames. | |
1378 // Current implementation does not support this. See bug #5031735. | |
1379 // In theory it is possible to pop frames in such cases. | |
1380 return JVMTI_ERROR_OPAQUE_FRAME; | |
1381 } | |
1382 } | |
1383 | |
1384 // If any of the top 2 frames is a compiled one, need to deoptimize it | |
1385 for (int i = 0; i < 2; i++) { | |
1386 if (!is_interpreted[i]) { | |
1387 VM_DeoptimizeFrame op(java_thread, frame_sp[i]); | |
1388 VMThread::execute(&op); | |
1389 } | |
1390 } | |
1391 | |
1392 // Update the thread state to reflect that the top frame is popped | |
1393 // so that cur_stack_depth is maintained properly and all frameIDs | |
1394 // are invalidated. | |
1395 // The current frame will be popped later when the suspended thread | |
1396 // is resumed and right before returning from VM to Java. | |
1397 // (see call_VM_base() in assembler_<cpu>.cpp). | |
1398 | |
1399 // It's fine to update the thread state here because no JVMTI events | |
1400 // shall be posted for this PopFrame. | |
1401 | |
1402 // retreive or create the state | |
1403 JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread); | |
1404 | |
1405 state->update_for_pop_top_frame(); | |
1406 java_thread->set_popframe_condition(JavaThread::popframe_pending_bit); | |
1407 // Set pending step flag for this popframe and it is cleared when next | |
1408 // step event is posted. | |
1409 state->set_pending_step_for_popframe(); | |
1410 } | |
1411 | |
1412 return JVMTI_ERROR_NONE; | |
1413 } /* end PopFrame */ | |
1414 | |
1415 | |
1416 // Threads_lock NOT held, java_thread not protected by lock | |
1417 // java_thread - pre-checked | |
1418 // java_thread - unchecked | |
1419 // depth - pre-checked as non-negative | |
1420 // method_ptr - pre-checked for NULL | |
1421 // location_ptr - pre-checked for NULL | |
1422 jvmtiError | |
1423 JvmtiEnv::GetFrameLocation(JavaThread* java_thread, jint depth, jmethodID* method_ptr, jlocation* location_ptr) { | |
1424 jvmtiError err = JVMTI_ERROR_NONE; | |
1425 uint32_t debug_bits = 0; | |
1426 | |
1427 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
1428 err = get_frame_location(java_thread, depth, method_ptr, location_ptr); | |
1429 } else { | |
1430 // JVMTI get java stack frame location at safepoint. | |
1431 VM_GetFrameLocation op(this, java_thread, depth, method_ptr, location_ptr); | |
1432 VMThread::execute(&op); | |
1433 err = op.result(); | |
1434 } | |
1435 return err; | |
1436 } /* end GetFrameLocation */ | |
1437 | |
1438 | |
1439 // Threads_lock NOT held, java_thread not protected by lock | |
1440 // java_thread - pre-checked | |
1441 // java_thread - unchecked | |
1442 // depth - pre-checked as non-negative | |
1443 jvmtiError | |
1444 JvmtiEnv::NotifyFramePop(JavaThread* java_thread, jint depth) { | |
1445 ResourceMark rm; | |
1446 uint32_t debug_bits = 0; | |
1447 | |
1448 if (!JvmtiEnv::is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
1449 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
1450 } | |
1451 | |
1452 if (TraceJVMTICalls) { | |
1453 JvmtiSuspendControl::print(); | |
1454 } | |
1455 | |
1456 vframe *vf = vframeFor(java_thread, depth); | |
1457 if (vf == NULL) { | |
1458 return JVMTI_ERROR_NO_MORE_FRAMES; | |
1459 } | |
1460 | |
1461 if (!vf->is_java_frame() || ((javaVFrame*) vf)->method()->is_native()) { | |
1462 return JVMTI_ERROR_OPAQUE_FRAME; | |
1463 } | |
1464 | |
1465 assert(vf->frame_pointer() != NULL, "frame pointer mustn't be NULL"); | |
1466 | |
1467 JvmtiThreadState *state = JvmtiThreadState::state_for(java_thread); | |
1468 int frame_number = state->count_frames() - depth; | |
1469 state->env_thread_state(this)->set_frame_pop(frame_number); | |
1470 | |
1471 return JVMTI_ERROR_NONE; | |
1472 } /* end NotifyFramePop */ | |
1473 | |
1474 | |
1475 // | |
1476 // Force Early Return functions | |
1477 // | |
1478 | |
1479 // Threads_lock NOT held, java_thread not protected by lock | |
1480 // java_thread - pre-checked | |
1481 jvmtiError | |
1482 JvmtiEnv::ForceEarlyReturnObject(JavaThread* java_thread, jobject value) { | |
1483 jvalue val; | |
1484 val.l = value; | |
1485 return force_early_return(java_thread, val, atos); | |
1486 } /* end ForceEarlyReturnObject */ | |
1487 | |
1488 | |
1489 // Threads_lock NOT held, java_thread not protected by lock | |
1490 // java_thread - pre-checked | |
1491 jvmtiError | |
1492 JvmtiEnv::ForceEarlyReturnInt(JavaThread* java_thread, jint value) { | |
1493 jvalue val; | |
1494 val.i = value; | |
1495 return force_early_return(java_thread, val, itos); | |
1496 } /* end ForceEarlyReturnInt */ | |
1497 | |
1498 | |
1499 // Threads_lock NOT held, java_thread not protected by lock | |
1500 // java_thread - pre-checked | |
1501 jvmtiError | |
1502 JvmtiEnv::ForceEarlyReturnLong(JavaThread* java_thread, jlong value) { | |
1503 jvalue val; | |
1504 val.j = value; | |
1505 return force_early_return(java_thread, val, ltos); | |
1506 } /* end ForceEarlyReturnLong */ | |
1507 | |
1508 | |
1509 // Threads_lock NOT held, java_thread not protected by lock | |
1510 // java_thread - pre-checked | |
1511 jvmtiError | |
1512 JvmtiEnv::ForceEarlyReturnFloat(JavaThread* java_thread, jfloat value) { | |
1513 jvalue val; | |
1514 val.f = value; | |
1515 return force_early_return(java_thread, val, ftos); | |
1516 } /* end ForceEarlyReturnFloat */ | |
1517 | |
1518 | |
1519 // Threads_lock NOT held, java_thread not protected by lock | |
1520 // java_thread - pre-checked | |
1521 jvmtiError | |
1522 JvmtiEnv::ForceEarlyReturnDouble(JavaThread* java_thread, jdouble value) { | |
1523 jvalue val; | |
1524 val.d = value; | |
1525 return force_early_return(java_thread, val, dtos); | |
1526 } /* end ForceEarlyReturnDouble */ | |
1527 | |
1528 | |
1529 // Threads_lock NOT held, java_thread not protected by lock | |
1530 // java_thread - pre-checked | |
1531 jvmtiError | |
1532 JvmtiEnv::ForceEarlyReturnVoid(JavaThread* java_thread) { | |
1533 jvalue val; | |
1534 val.j = 0L; | |
1535 return force_early_return(java_thread, val, vtos); | |
1536 } /* end ForceEarlyReturnVoid */ | |
1537 | |
1538 | |
1539 // | |
1540 // Heap functions | |
1541 // | |
1542 | |
1543 // klass - NULL is a valid value, must be checked | |
1544 // initial_object - NULL is a valid value, must be checked | |
1545 // callbacks - pre-checked for NULL | |
1546 // user_data - NULL is a valid value, must be checked | |
1547 jvmtiError | |
1548 JvmtiEnv::FollowReferences(jint heap_filter, jclass klass, jobject initial_object, const jvmtiHeapCallbacks* callbacks, const void* user_data) { | |
1549 // check klass if provided | |
1550 klassOop k_oop = NULL; | |
1551 if (klass != NULL) { | |
1552 oop k_mirror = JNIHandles::resolve_external_guard(klass); | |
1553 if (k_mirror == NULL) { | |
1554 return JVMTI_ERROR_INVALID_CLASS; | |
1555 } | |
1556 if (java_lang_Class::is_primitive(k_mirror)) { | |
1557 return JVMTI_ERROR_NONE; | |
1558 } | |
1559 k_oop = java_lang_Class::as_klassOop(k_mirror); | |
1560 if (k_oop == NULL) { | |
1561 return JVMTI_ERROR_INVALID_CLASS; | |
1562 } | |
1563 } | |
1564 | |
1565 Thread *thread = Thread::current(); | |
1566 HandleMark hm(thread); | |
1567 KlassHandle kh (thread, k_oop); | |
1568 | |
1569 TraceTime t("FollowReferences", TraceJVMTIObjectTagging); | |
1570 JvmtiTagMap::tag_map_for(this)->follow_references(heap_filter, kh, initial_object, callbacks, user_data); | |
1571 return JVMTI_ERROR_NONE; | |
1572 } /* end FollowReferences */ | |
1573 | |
1574 | |
1575 // klass - NULL is a valid value, must be checked | |
1576 // callbacks - pre-checked for NULL | |
1577 // user_data - NULL is a valid value, must be checked | |
1578 jvmtiError | |
1579 JvmtiEnv::IterateThroughHeap(jint heap_filter, jclass klass, const jvmtiHeapCallbacks* callbacks, const void* user_data) { | |
1580 // check klass if provided | |
1581 klassOop k_oop = NULL; | |
1582 if (klass != NULL) { | |
1583 oop k_mirror = JNIHandles::resolve_external_guard(klass); | |
1584 if (k_mirror == NULL) { | |
1585 return JVMTI_ERROR_INVALID_CLASS; | |
1586 } | |
1587 if (java_lang_Class::is_primitive(k_mirror)) { | |
1588 return JVMTI_ERROR_NONE; | |
1589 } | |
1590 k_oop = java_lang_Class::as_klassOop(k_mirror); | |
1591 if (k_oop == NULL) { | |
1592 return JVMTI_ERROR_INVALID_CLASS; | |
1593 } | |
1594 } | |
1595 | |
1596 Thread *thread = Thread::current(); | |
1597 HandleMark hm(thread); | |
1598 KlassHandle kh (thread, k_oop); | |
1599 | |
1600 TraceTime t("IterateThroughHeap", TraceJVMTIObjectTagging); | |
1601 JvmtiTagMap::tag_map_for(this)->iterate_through_heap(heap_filter, kh, callbacks, user_data); | |
1602 return JVMTI_ERROR_NONE; | |
1603 } /* end IterateThroughHeap */ | |
1604 | |
1605 | |
1606 // tag_ptr - pre-checked for NULL | |
1607 jvmtiError | |
1608 JvmtiEnv::GetTag(jobject object, jlong* tag_ptr) { | |
1609 oop o = JNIHandles::resolve_external_guard(object); | |
1610 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
1611 *tag_ptr = JvmtiTagMap::tag_map_for(this)->get_tag(object); | |
1612 return JVMTI_ERROR_NONE; | |
1613 } /* end GetTag */ | |
1614 | |
1615 | |
1616 jvmtiError | |
1617 JvmtiEnv::SetTag(jobject object, jlong tag) { | |
1618 oop o = JNIHandles::resolve_external_guard(object); | |
1619 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
1620 JvmtiTagMap::tag_map_for(this)->set_tag(object, tag); | |
1621 return JVMTI_ERROR_NONE; | |
1622 } /* end SetTag */ | |
1623 | |
1624 | |
1625 // tag_count - pre-checked to be greater than or equal to 0 | |
1626 // tags - pre-checked for NULL | |
1627 // count_ptr - pre-checked for NULL | |
1628 // object_result_ptr - NULL is a valid value, must be checked | |
1629 // tag_result_ptr - NULL is a valid value, must be checked | |
1630 jvmtiError | |
1631 JvmtiEnv::GetObjectsWithTags(jint tag_count, const jlong* tags, jint* count_ptr, jobject** object_result_ptr, jlong** tag_result_ptr) { | |
1632 TraceTime t("GetObjectsWithTags", TraceJVMTIObjectTagging); | |
1633 return JvmtiTagMap::tag_map_for(this)->get_objects_with_tags((jlong*)tags, tag_count, count_ptr, object_result_ptr, tag_result_ptr); | |
1634 } /* end GetObjectsWithTags */ | |
1635 | |
1636 | |
1637 jvmtiError | |
1638 JvmtiEnv::ForceGarbageCollection() { | |
1639 Universe::heap()->collect(GCCause::_jvmti_force_gc); | |
1640 return JVMTI_ERROR_NONE; | |
1641 } /* end ForceGarbageCollection */ | |
1642 | |
1643 | |
1644 // | |
1645 // Heap (1.0) functions | |
1646 // | |
1647 | |
1648 // object_reference_callback - pre-checked for NULL | |
1649 // user_data - NULL is a valid value, must be checked | |
1650 jvmtiError | |
1651 JvmtiEnv::IterateOverObjectsReachableFromObject(jobject object, jvmtiObjectReferenceCallback object_reference_callback, const void* user_data) { | |
1652 oop o = JNIHandles::resolve_external_guard(object); | |
1653 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
1654 JvmtiTagMap::tag_map_for(this)->iterate_over_objects_reachable_from_object(object, object_reference_callback, user_data); | |
1655 return JVMTI_ERROR_NONE; | |
1656 } /* end IterateOverObjectsReachableFromObject */ | |
1657 | |
1658 | |
1659 // heap_root_callback - NULL is a valid value, must be checked | |
1660 // stack_ref_callback - NULL is a valid value, must be checked | |
1661 // object_ref_callback - NULL is a valid value, must be checked | |
1662 // user_data - NULL is a valid value, must be checked | |
1663 jvmtiError | |
1664 JvmtiEnv::IterateOverReachableObjects(jvmtiHeapRootCallback heap_root_callback, jvmtiStackReferenceCallback stack_ref_callback, jvmtiObjectReferenceCallback object_ref_callback, const void* user_data) { | |
1665 TraceTime t("IterateOverReachableObjects", TraceJVMTIObjectTagging); | |
1666 JvmtiTagMap::tag_map_for(this)->iterate_over_reachable_objects(heap_root_callback, stack_ref_callback, object_ref_callback, user_data); | |
1667 return JVMTI_ERROR_NONE; | |
1668 } /* end IterateOverReachableObjects */ | |
1669 | |
1670 | |
1671 // heap_object_callback - pre-checked for NULL | |
1672 // user_data - NULL is a valid value, must be checked | |
1673 jvmtiError | |
1674 JvmtiEnv::IterateOverHeap(jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) { | |
1675 TraceTime t("IterateOverHeap", TraceJVMTIObjectTagging); | |
1676 Thread *thread = Thread::current(); | |
1677 HandleMark hm(thread); | |
1678 JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, KlassHandle(), heap_object_callback, user_data); | |
1679 return JVMTI_ERROR_NONE; | |
1680 } /* end IterateOverHeap */ | |
1681 | |
1682 | |
1683 // k_mirror - may be primitive, this must be checked | |
1684 // heap_object_callback - pre-checked for NULL | |
1685 // user_data - NULL is a valid value, must be checked | |
1686 jvmtiError | |
1687 JvmtiEnv::IterateOverInstancesOfClass(oop k_mirror, jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) { | |
1688 if (java_lang_Class::is_primitive(k_mirror)) { | |
1689 // DO PRIMITIVE CLASS PROCESSING | |
1690 return JVMTI_ERROR_NONE; | |
1691 } | |
1692 klassOop k_oop = java_lang_Class::as_klassOop(k_mirror); | |
1693 if (k_oop == NULL) { | |
1694 return JVMTI_ERROR_INVALID_CLASS; | |
1695 } | |
1696 Thread *thread = Thread::current(); | |
1697 HandleMark hm(thread); | |
1698 KlassHandle klass (thread, k_oop); | |
1699 TraceTime t("IterateOverInstancesOfClass", TraceJVMTIObjectTagging); | |
1700 JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, klass, heap_object_callback, user_data); | |
1701 return JVMTI_ERROR_NONE; | |
1702 } /* end IterateOverInstancesOfClass */ | |
1703 | |
1704 | |
1705 // | |
1706 // Local Variable functions | |
1707 // | |
1708 | |
1709 // Threads_lock NOT held, java_thread not protected by lock | |
1710 // java_thread - pre-checked | |
1711 // java_thread - unchecked | |
1712 // depth - pre-checked as non-negative | |
1713 // value_ptr - pre-checked for NULL | |
1714 jvmtiError | |
1715 JvmtiEnv::GetLocalObject(JavaThread* java_thread, jint depth, jint slot, jobject* value_ptr) { | |
1716 JavaThread* current_thread = JavaThread::current(); | |
1717 // rm object is created to clean up the javaVFrame created in | |
1718 // doit_prologue(), but after doit() is finished with it. | |
1719 ResourceMark rm(current_thread); | |
1720 | |
1721 VM_GetOrSetLocal op(java_thread, current_thread, depth, slot); | |
1722 VMThread::execute(&op); | |
1723 jvmtiError err = op.result(); | |
1724 if (err != JVMTI_ERROR_NONE) { | |
1725 return err; | |
1726 } else { | |
1727 *value_ptr = op.value().l; | |
1728 return JVMTI_ERROR_NONE; | |
1729 } | |
1730 } /* end GetLocalObject */ | |
1731 | |
1732 | |
1733 // Threads_lock NOT held, java_thread not protected by lock | |
1734 // java_thread - pre-checked | |
1735 // java_thread - unchecked | |
1736 // depth - pre-checked as non-negative | |
1737 // value_ptr - pre-checked for NULL | |
1738 jvmtiError | |
1739 JvmtiEnv::GetLocalInt(JavaThread* java_thread, jint depth, jint slot, jint* value_ptr) { | |
1740 // rm object is created to clean up the javaVFrame created in | |
1741 // doit_prologue(), but after doit() is finished with it. | |
1742 ResourceMark rm; | |
1743 | |
1744 VM_GetOrSetLocal op(java_thread, depth, slot, T_INT); | |
1745 VMThread::execute(&op); | |
1746 *value_ptr = op.value().i; | |
1747 return op.result(); | |
1748 } /* end GetLocalInt */ | |
1749 | |
1750 | |
1751 // Threads_lock NOT held, java_thread not protected by lock | |
1752 // java_thread - pre-checked | |
1753 // java_thread - unchecked | |
1754 // depth - pre-checked as non-negative | |
1755 // value_ptr - pre-checked for NULL | |
1756 jvmtiError | |
1757 JvmtiEnv::GetLocalLong(JavaThread* java_thread, jint depth, jint slot, jlong* value_ptr) { | |
1758 // rm object is created to clean up the javaVFrame created in | |
1759 // doit_prologue(), but after doit() is finished with it. | |
1760 ResourceMark rm; | |
1761 | |
1762 VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG); | |
1763 VMThread::execute(&op); | |
1764 *value_ptr = op.value().j; | |
1765 return op.result(); | |
1766 } /* end GetLocalLong */ | |
1767 | |
1768 | |
1769 // Threads_lock NOT held, java_thread not protected by lock | |
1770 // java_thread - pre-checked | |
1771 // java_thread - unchecked | |
1772 // depth - pre-checked as non-negative | |
1773 // value_ptr - pre-checked for NULL | |
1774 jvmtiError | |
1775 JvmtiEnv::GetLocalFloat(JavaThread* java_thread, jint depth, jint slot, jfloat* value_ptr) { | |
1776 // rm object is created to clean up the javaVFrame created in | |
1777 // doit_prologue(), but after doit() is finished with it. | |
1778 ResourceMark rm; | |
1779 | |
1780 VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT); | |
1781 VMThread::execute(&op); | |
1782 *value_ptr = op.value().f; | |
1783 return op.result(); | |
1784 } /* end GetLocalFloat */ | |
1785 | |
1786 | |
1787 // Threads_lock NOT held, java_thread not protected by lock | |
1788 // java_thread - pre-checked | |
1789 // java_thread - unchecked | |
1790 // depth - pre-checked as non-negative | |
1791 // value_ptr - pre-checked for NULL | |
1792 jvmtiError | |
1793 JvmtiEnv::GetLocalDouble(JavaThread* java_thread, jint depth, jint slot, jdouble* value_ptr) { | |
1794 // rm object is created to clean up the javaVFrame created in | |
1795 // doit_prologue(), but after doit() is finished with it. | |
1796 ResourceMark rm; | |
1797 | |
1798 VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE); | |
1799 VMThread::execute(&op); | |
1800 *value_ptr = op.value().d; | |
1801 return op.result(); | |
1802 } /* end GetLocalDouble */ | |
1803 | |
1804 | |
1805 // Threads_lock NOT held, java_thread not protected by lock | |
1806 // java_thread - pre-checked | |
1807 // java_thread - unchecked | |
1808 // depth - pre-checked as non-negative | |
1809 jvmtiError | |
1810 JvmtiEnv::SetLocalObject(JavaThread* java_thread, jint depth, jint slot, jobject value) { | |
1811 // rm object is created to clean up the javaVFrame created in | |
1812 // doit_prologue(), but after doit() is finished with it. | |
1813 ResourceMark rm; | |
1814 jvalue val; | |
1815 val.l = value; | |
1816 VM_GetOrSetLocal op(java_thread, depth, slot, T_OBJECT, val); | |
1817 VMThread::execute(&op); | |
1818 return op.result(); | |
1819 } /* end SetLocalObject */ | |
1820 | |
1821 | |
1822 // Threads_lock NOT held, java_thread not protected by lock | |
1823 // java_thread - pre-checked | |
1824 // java_thread - unchecked | |
1825 // depth - pre-checked as non-negative | |
1826 jvmtiError | |
1827 JvmtiEnv::SetLocalInt(JavaThread* java_thread, jint depth, jint slot, jint value) { | |
1828 // rm object is created to clean up the javaVFrame created in | |
1829 // doit_prologue(), but after doit() is finished with it. | |
1830 ResourceMark rm; | |
1831 jvalue val; | |
1832 val.i = value; | |
1833 VM_GetOrSetLocal op(java_thread, depth, slot, T_INT, val); | |
1834 VMThread::execute(&op); | |
1835 return op.result(); | |
1836 } /* end SetLocalInt */ | |
1837 | |
1838 | |
1839 // Threads_lock NOT held, java_thread not protected by lock | |
1840 // java_thread - pre-checked | |
1841 // java_thread - unchecked | |
1842 // depth - pre-checked as non-negative | |
1843 jvmtiError | |
1844 JvmtiEnv::SetLocalLong(JavaThread* java_thread, jint depth, jint slot, jlong value) { | |
1845 // rm object is created to clean up the javaVFrame created in | |
1846 // doit_prologue(), but after doit() is finished with it. | |
1847 ResourceMark rm; | |
1848 jvalue val; | |
1849 val.j = value; | |
1850 VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG, val); | |
1851 VMThread::execute(&op); | |
1852 return op.result(); | |
1853 } /* end SetLocalLong */ | |
1854 | |
1855 | |
1856 // Threads_lock NOT held, java_thread not protected by lock | |
1857 // java_thread - pre-checked | |
1858 // java_thread - unchecked | |
1859 // depth - pre-checked as non-negative | |
1860 jvmtiError | |
1861 JvmtiEnv::SetLocalFloat(JavaThread* java_thread, jint depth, jint slot, jfloat value) { | |
1862 // rm object is created to clean up the javaVFrame created in | |
1863 // doit_prologue(), but after doit() is finished with it. | |
1864 ResourceMark rm; | |
1865 jvalue val; | |
1866 val.f = value; | |
1867 VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT, val); | |
1868 VMThread::execute(&op); | |
1869 return op.result(); | |
1870 } /* end SetLocalFloat */ | |
1871 | |
1872 | |
1873 // Threads_lock NOT held, java_thread not protected by lock | |
1874 // java_thread - pre-checked | |
1875 // java_thread - unchecked | |
1876 // depth - pre-checked as non-negative | |
1877 jvmtiError | |
1878 JvmtiEnv::SetLocalDouble(JavaThread* java_thread, jint depth, jint slot, jdouble value) { | |
1879 // rm object is created to clean up the javaVFrame created in | |
1880 // doit_prologue(), but after doit() is finished with it. | |
1881 ResourceMark rm; | |
1882 jvalue val; | |
1883 val.d = value; | |
1884 VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE, val); | |
1885 VMThread::execute(&op); | |
1886 return op.result(); | |
1887 } /* end SetLocalDouble */ | |
1888 | |
1889 | |
1890 // | |
1891 // Breakpoint functions | |
1892 // | |
1893 | |
1894 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
1895 jvmtiError | |
1896 JvmtiEnv::SetBreakpoint(methodOop method_oop, jlocation location) { | |
1897 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
1898 if (location < 0) { // simple invalid location check first | |
1899 return JVMTI_ERROR_INVALID_LOCATION; | |
1900 } | |
1901 // verify that the breakpoint is not past the end of the method | |
1902 if (location >= (jlocation) method_oop->code_size()) { | |
1903 return JVMTI_ERROR_INVALID_LOCATION; | |
1904 } | |
1905 | |
1906 ResourceMark rm; | |
1907 JvmtiBreakpoint bp(method_oop, location); | |
1908 JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints(); | |
1909 if (jvmti_breakpoints.set(bp) == JVMTI_ERROR_DUPLICATE) | |
1910 return JVMTI_ERROR_DUPLICATE; | |
1911 | |
1912 if (TraceJVMTICalls) { | |
1913 jvmti_breakpoints.print(); | |
1914 } | |
1915 | |
1916 return JVMTI_ERROR_NONE; | |
1917 } /* end SetBreakpoint */ | |
1918 | |
1919 | |
1920 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
1921 jvmtiError | |
1922 JvmtiEnv::ClearBreakpoint(methodOop method_oop, jlocation location) { | |
1923 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
1924 | |
1925 if (location < 0) { // simple invalid location check first | |
1926 return JVMTI_ERROR_INVALID_LOCATION; | |
1927 } | |
1928 | |
1929 // verify that the breakpoint is not past the end of the method | |
1930 if (location >= (jlocation) method_oop->code_size()) { | |
1931 return JVMTI_ERROR_INVALID_LOCATION; | |
1932 } | |
1933 | |
1934 JvmtiBreakpoint bp(method_oop, location); | |
1935 | |
1936 JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints(); | |
1937 if (jvmti_breakpoints.clear(bp) == JVMTI_ERROR_NOT_FOUND) | |
1938 return JVMTI_ERROR_NOT_FOUND; | |
1939 | |
1940 if (TraceJVMTICalls) { | |
1941 jvmti_breakpoints.print(); | |
1942 } | |
1943 | |
1944 return JVMTI_ERROR_NONE; | |
1945 } /* end ClearBreakpoint */ | |
1946 | |
1947 | |
1948 // | |
1949 // Watched Field functions | |
1950 // | |
1951 | |
1952 jvmtiError | |
1953 JvmtiEnv::SetFieldAccessWatch(fieldDescriptor* fdesc_ptr) { | |
1954 // make sure we haven't set this watch before | |
1955 if (fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_DUPLICATE; | |
1956 fdesc_ptr->set_is_field_access_watched(true); | |
1957 update_klass_field_access_flag(fdesc_ptr); | |
1958 | |
1959 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, true); | |
1960 | |
1961 return JVMTI_ERROR_NONE; | |
1962 } /* end SetFieldAccessWatch */ | |
1963 | |
1964 | |
1965 jvmtiError | |
1966 JvmtiEnv::ClearFieldAccessWatch(fieldDescriptor* fdesc_ptr) { | |
1967 // make sure we have a watch to clear | |
1968 if (!fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_NOT_FOUND; | |
1969 fdesc_ptr->set_is_field_access_watched(false); | |
1970 update_klass_field_access_flag(fdesc_ptr); | |
1971 | |
1972 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, false); | |
1973 | |
1974 return JVMTI_ERROR_NONE; | |
1975 } /* end ClearFieldAccessWatch */ | |
1976 | |
1977 | |
1978 jvmtiError | |
1979 JvmtiEnv::SetFieldModificationWatch(fieldDescriptor* fdesc_ptr) { | |
1980 // make sure we haven't set this watch before | |
1981 if (fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_DUPLICATE; | |
1982 fdesc_ptr->set_is_field_modification_watched(true); | |
1983 update_klass_field_access_flag(fdesc_ptr); | |
1984 | |
1985 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, true); | |
1986 | |
1987 return JVMTI_ERROR_NONE; | |
1988 } /* end SetFieldModificationWatch */ | |
1989 | |
1990 | |
1991 jvmtiError | |
1992 JvmtiEnv::ClearFieldModificationWatch(fieldDescriptor* fdesc_ptr) { | |
1993 // make sure we have a watch to clear | |
1994 if (!fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_NOT_FOUND; | |
1995 fdesc_ptr->set_is_field_modification_watched(false); | |
1996 update_klass_field_access_flag(fdesc_ptr); | |
1997 | |
1998 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, false); | |
1999 | |
2000 return JVMTI_ERROR_NONE; | |
2001 } /* end ClearFieldModificationWatch */ | |
2002 | |
2003 // | |
2004 // Class functions | |
2005 // | |
2006 | |
2007 | |
2008 // k_mirror - may be primitive, this must be checked | |
2009 // signature_ptr - NULL is a valid value, must be checked | |
2010 // generic_ptr - NULL is a valid value, must be checked | |
2011 jvmtiError | |
2012 JvmtiEnv::GetClassSignature(oop k_mirror, char** signature_ptr, char** generic_ptr) { | |
2013 ResourceMark rm; | |
2014 bool isPrimitive = java_lang_Class::is_primitive(k_mirror); | |
2015 klassOop k = NULL; | |
2016 if (!isPrimitive) { | |
2017 k = java_lang_Class::as_klassOop(k_mirror); | |
2018 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
2019 } | |
2020 if (signature_ptr != NULL) { | |
2021 char* result = NULL; | |
2022 if (isPrimitive) { | |
2023 char tchar = type2char(java_lang_Class::primitive_type(k_mirror)); | |
2024 result = (char*) jvmtiMalloc(2); | |
2025 result[0] = tchar; | |
2026 result[1] = '\0'; | |
2027 } else { | |
2028 const char* class_sig = Klass::cast(k)->signature_name(); | |
2029 result = (char *) jvmtiMalloc(strlen(class_sig)+1); | |
2030 strcpy(result, class_sig); | |
2031 } | |
2032 *signature_ptr = result; | |
2033 } | |
2034 if (generic_ptr != NULL) { | |
2035 *generic_ptr = NULL; | |
2036 if (!isPrimitive && Klass::cast(k)->oop_is_instance()) { | |
2037 symbolOop soo = instanceKlass::cast(k)->generic_signature(); | |
2038 if (soo != NULL) { | |
2039 const char *gen_sig = soo->as_C_string(); | |
2040 if (gen_sig != NULL) { | |
2041 char* gen_result; | |
2042 jvmtiError err = allocate(strlen(gen_sig) + 1, | |
2043 (unsigned char **)&gen_result); | |
2044 if (err != JVMTI_ERROR_NONE) { | |
2045 return err; | |
2046 } | |
2047 strcpy(gen_result, gen_sig); | |
2048 *generic_ptr = gen_result; | |
2049 } | |
2050 } | |
2051 } | |
2052 } | |
2053 return JVMTI_ERROR_NONE; | |
2054 } /* end GetClassSignature */ | |
2055 | |
2056 | |
2057 // k_mirror - may be primitive, this must be checked | |
2058 // status_ptr - pre-checked for NULL | |
2059 jvmtiError | |
2060 JvmtiEnv::GetClassStatus(oop k_mirror, jint* status_ptr) { | |
2061 jint result = 0; | |
2062 if (java_lang_Class::is_primitive(k_mirror)) { | |
2063 result |= JVMTI_CLASS_STATUS_PRIMITIVE; | |
2064 } else { | |
2065 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2066 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
2067 result = Klass::cast(k)->jvmti_class_status(); | |
2068 } | |
2069 *status_ptr = result; | |
2070 | |
2071 return JVMTI_ERROR_NONE; | |
2072 } /* end GetClassStatus */ | |
2073 | |
2074 | |
2075 // k_mirror - may be primitive, this must be checked | |
2076 // source_name_ptr - pre-checked for NULL | |
2077 jvmtiError | |
2078 JvmtiEnv::GetSourceFileName(oop k_mirror, char** source_name_ptr) { | |
2079 if (java_lang_Class::is_primitive(k_mirror)) { | |
2080 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2081 } | |
2082 klassOop k_klass = java_lang_Class::as_klassOop(k_mirror); | |
2083 NULL_CHECK(k_klass, JVMTI_ERROR_INVALID_CLASS); | |
2084 | |
2085 if (!Klass::cast(k_klass)->oop_is_instance()) { | |
2086 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2087 } | |
2088 | |
2089 symbolOop sfnOop = instanceKlass::cast(k_klass)->source_file_name(); | |
2090 NULL_CHECK(sfnOop, JVMTI_ERROR_ABSENT_INFORMATION); | |
2091 { | |
2092 JavaThread* current_thread = JavaThread::current(); | |
2093 ResourceMark rm(current_thread); | |
2094 const char* sfncp = (const char*) sfnOop->as_C_string(); | |
2095 *source_name_ptr = (char *) jvmtiMalloc(strlen(sfncp)+1); | |
2096 strcpy(*source_name_ptr, sfncp); | |
2097 } | |
2098 | |
2099 return JVMTI_ERROR_NONE; | |
2100 } /* end GetSourceFileName */ | |
2101 | |
2102 | |
2103 // k_mirror - may be primitive, this must be checked | |
2104 // modifiers_ptr - pre-checked for NULL | |
2105 jvmtiError | |
2106 JvmtiEnv::GetClassModifiers(oop k_mirror, jint* modifiers_ptr) { | |
2107 JavaThread* current_thread = JavaThread::current(); | |
2108 jint result = 0; | |
2109 if (!java_lang_Class::is_primitive(k_mirror)) { | |
2110 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2111 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
2112 assert((Klass::cast(k)->oop_is_instance() || Klass::cast(k)->oop_is_array()), "should be an instance or an array klass"); | |
2113 result = Klass::cast(k)->compute_modifier_flags(current_thread); | |
2114 JavaThread* THREAD = current_thread; // pass to macros | |
2115 if (HAS_PENDING_EXCEPTION) { | |
2116 CLEAR_PENDING_EXCEPTION; | |
2117 return JVMTI_ERROR_INTERNAL; | |
2118 }; | |
2119 | |
2120 // Reset the deleted ACC_SUPER bit ( deleted in compute_modifier_flags()). | |
2121 if(Klass::cast(k)->is_super()) { | |
2122 result |= JVM_ACC_SUPER; | |
2123 } | |
2124 } else { | |
2125 result = (JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC); | |
2126 } | |
2127 *modifiers_ptr = result; | |
2128 | |
2129 return JVMTI_ERROR_NONE; | |
2130 } /* end GetClassModifiers */ | |
2131 | |
2132 | |
2133 // k_mirror - may be primitive, this must be checked | |
2134 // method_count_ptr - pre-checked for NULL | |
2135 // methods_ptr - pre-checked for NULL | |
2136 jvmtiError | |
2137 JvmtiEnv::GetClassMethods(oop k_mirror, jint* method_count_ptr, jmethodID** methods_ptr) { | |
2138 JavaThread* current_thread = JavaThread::current(); | |
2139 HandleMark hm(current_thread); | |
2140 | |
2141 if (java_lang_Class::is_primitive(k_mirror)) { | |
2142 *method_count_ptr = 0; | |
2143 *methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID)); | |
2144 return JVMTI_ERROR_NONE; | |
2145 } | |
2146 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2147 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
2148 | |
2149 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
2150 if (!(Klass::cast(k)->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) { | |
2151 return JVMTI_ERROR_CLASS_NOT_PREPARED; | |
2152 } | |
2153 | |
2154 if (!Klass::cast(k)->oop_is_instance()) { | |
2155 *method_count_ptr = 0; | |
2156 *methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID)); | |
2157 return JVMTI_ERROR_NONE; | |
2158 } | |
2159 instanceKlassHandle instanceK_h(current_thread, k); | |
2160 // Allocate the result and fill it in | |
2161 int result_length = instanceK_h->methods()->length(); | |
2162 jmethodID* result_list = (jmethodID*)jvmtiMalloc(result_length * sizeof(jmethodID)); | |
2163 int index; | |
2164 if (JvmtiExport::can_maintain_original_method_order()) { | |
2165 // Use the original method ordering indices stored in the class, so we can emit | |
2166 // jmethodIDs in the order they appeared in the class file | |
2167 for (index = 0; index < result_length; index++) { | |
2168 methodOop m = methodOop(instanceK_h->methods()->obj_at(index)); | |
2169 int original_index = instanceK_h->method_ordering()->int_at(index); | |
2170 assert(original_index >= 0 && original_index < result_length, "invalid original method index"); | |
2171 jmethodID id = m->jmethod_id(); | |
2172 result_list[original_index] = id; | |
2173 } | |
2174 } else { | |
2175 // otherwise just copy in any order | |
2176 for (index = 0; index < result_length; index++) { | |
2177 methodOop m = methodOop(instanceK_h->methods()->obj_at(index)); | |
2178 jmethodID id = m->jmethod_id(); | |
2179 result_list[index] = id; | |
2180 } | |
2181 } | |
2182 // Fill in return value. | |
2183 *method_count_ptr = result_length; | |
2184 *methods_ptr = result_list; | |
2185 | |
2186 return JVMTI_ERROR_NONE; | |
2187 } /* end GetClassMethods */ | |
2188 | |
2189 | |
2190 // k_mirror - may be primitive, this must be checked | |
2191 // field_count_ptr - pre-checked for NULL | |
2192 // fields_ptr - pre-checked for NULL | |
2193 jvmtiError | |
2194 JvmtiEnv::GetClassFields(oop k_mirror, jint* field_count_ptr, jfieldID** fields_ptr) { | |
2195 if (java_lang_Class::is_primitive(k_mirror)) { | |
2196 *field_count_ptr = 0; | |
2197 *fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID)); | |
2198 return JVMTI_ERROR_NONE; | |
2199 } | |
2200 JavaThread* current_thread = JavaThread::current(); | |
2201 HandleMark hm(current_thread); | |
2202 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2203 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
2204 | |
2205 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
2206 if (!(Klass::cast(k)->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) { | |
2207 return JVMTI_ERROR_CLASS_NOT_PREPARED; | |
2208 } | |
2209 | |
2210 if (!Klass::cast(k)->oop_is_instance()) { | |
2211 *field_count_ptr = 0; | |
2212 *fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID)); | |
2213 return JVMTI_ERROR_NONE; | |
2214 } | |
2215 | |
2216 | |
2217 instanceKlassHandle instanceK_h(current_thread, k); | |
2218 | |
2219 int result_count = 0; | |
2220 // First, count the fields. | |
2221 FilteredFieldStream flds(instanceK_h, true, true); | |
2222 result_count = flds.field_count(); | |
2223 | |
2224 // Allocate the result and fill it in | |
2225 jfieldID* result_list = (jfieldID*) jvmtiMalloc(result_count * sizeof(jfieldID)); | |
2226 // The JVMTI spec requires fields in the order they occur in the class file, | |
2227 // this is the reverse order of what FieldStream hands out. | |
2228 int id_index = (result_count - 1); | |
2229 | |
2230 for (FilteredFieldStream src_st(instanceK_h, true, true); !src_st.eos(); src_st.next()) { | |
2231 result_list[id_index--] = jfieldIDWorkaround::to_jfieldID( | |
2232 instanceK_h, src_st.offset(), | |
2233 src_st.access_flags().is_static()); | |
2234 } | |
2235 assert(id_index == -1, "just checking"); | |
2236 // Fill in the results | |
2237 *field_count_ptr = result_count; | |
2238 *fields_ptr = result_list; | |
2239 | |
2240 return JVMTI_ERROR_NONE; | |
2241 } /* end GetClassFields */ | |
2242 | |
2243 | |
2244 // k_mirror - may be primitive, this must be checked | |
2245 // interface_count_ptr - pre-checked for NULL | |
2246 // interfaces_ptr - pre-checked for NULL | |
2247 jvmtiError | |
2248 JvmtiEnv::GetImplementedInterfaces(oop k_mirror, jint* interface_count_ptr, jclass** interfaces_ptr) { | |
2249 { | |
2250 if (java_lang_Class::is_primitive(k_mirror)) { | |
2251 *interface_count_ptr = 0; | |
2252 *interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass)); | |
2253 return JVMTI_ERROR_NONE; | |
2254 } | |
2255 JavaThread* current_thread = JavaThread::current(); | |
2256 HandleMark hm(current_thread); | |
2257 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2258 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
2259 | |
2260 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
2261 if (!(Klass::cast(k)->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) | |
2262 return JVMTI_ERROR_CLASS_NOT_PREPARED; | |
2263 | |
2264 if (!Klass::cast(k)->oop_is_instance()) { | |
2265 *interface_count_ptr = 0; | |
2266 *interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass)); | |
2267 return JVMTI_ERROR_NONE; | |
2268 } | |
2269 | |
2270 objArrayHandle interface_list(current_thread, instanceKlass::cast(k)->local_interfaces()); | |
2271 const int result_length = (interface_list.is_null() ? 0 : interface_list->length()); | |
2272 jclass* result_list = (jclass*) jvmtiMalloc(result_length * sizeof(jclass)); | |
2273 for (int i_index = 0; i_index < result_length; i_index += 1) { | |
2274 oop oop_at = interface_list->obj_at(i_index); | |
2275 assert(oop_at->is_klass(), "interfaces must be klassOops"); | |
2276 klassOop klassOop_at = klassOop(oop_at); // ???: is there a better way? | |
2277 assert(Klass::cast(klassOop_at)->is_interface(), "interfaces must be interfaces"); | |
2278 oop mirror_at = Klass::cast(klassOop_at)->java_mirror(); | |
2279 Handle handle_at = Handle(current_thread, mirror_at); | |
2280 result_list[i_index] = (jclass) jni_reference(handle_at); | |
2281 } | |
2282 *interface_count_ptr = result_length; | |
2283 *interfaces_ptr = result_list; | |
2284 } | |
2285 | |
2286 return JVMTI_ERROR_NONE; | |
2287 } /* end GetImplementedInterfaces */ | |
2288 | |
2289 | |
2290 // k_mirror - may be primitive, this must be checked | |
2291 // minor_version_ptr - pre-checked for NULL | |
2292 // major_version_ptr - pre-checked for NULL | |
2293 jvmtiError | |
2294 JvmtiEnv::GetClassVersionNumbers(oop k_mirror, jint* minor_version_ptr, jint* major_version_ptr) { | |
2295 if (java_lang_Class::is_primitive(k_mirror)) { | |
2296 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2297 } | |
2298 klassOop k_oop = java_lang_Class::as_klassOop(k_mirror); | |
2299 Thread *thread = Thread::current(); | |
2300 HandleMark hm(thread); | |
2301 KlassHandle klass(thread, k_oop); | |
2302 | |
2303 jint status = klass->jvmti_class_status(); | |
2304 if (status & (JVMTI_CLASS_STATUS_ERROR)) { | |
2305 return JVMTI_ERROR_INVALID_CLASS; | |
2306 } | |
2307 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { | |
2308 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2309 } | |
2310 | |
2311 instanceKlassHandle ik(thread, k_oop); | |
2312 *minor_version_ptr = ik->minor_version(); | |
2313 *major_version_ptr = ik->major_version(); | |
2314 | |
2315 return JVMTI_ERROR_NONE; | |
2316 } /* end GetClassVersionNumbers */ | |
2317 | |
2318 | |
2319 // k_mirror - may be primitive, this must be checked | |
2320 // constant_pool_count_ptr - pre-checked for NULL | |
2321 // constant_pool_byte_count_ptr - pre-checked for NULL | |
2322 // constant_pool_bytes_ptr - pre-checked for NULL | |
2323 jvmtiError | |
2324 JvmtiEnv::GetConstantPool(oop k_mirror, jint* constant_pool_count_ptr, jint* constant_pool_byte_count_ptr, unsigned char** constant_pool_bytes_ptr) { | |
2325 if (java_lang_Class::is_primitive(k_mirror)) { | |
2326 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2327 } | |
2328 | |
2329 klassOop k_oop = java_lang_Class::as_klassOop(k_mirror); | |
2330 Thread *thread = Thread::current(); | |
2331 HandleMark hm(thread); | |
2332 ResourceMark rm(thread); | |
2333 KlassHandle klass(thread, k_oop); | |
2334 | |
2335 jint status = klass->jvmti_class_status(); | |
2336 if (status & (JVMTI_CLASS_STATUS_ERROR)) { | |
2337 return JVMTI_ERROR_INVALID_CLASS; | |
2338 } | |
2339 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { | |
2340 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2341 } | |
2342 | |
2343 instanceKlassHandle ikh(thread, k_oop); | |
2344 constantPoolHandle constants(thread, ikh->constants()); | |
2345 ObjectLocker ol(constants, thread); // lock constant pool while we query it | |
2346 | |
2347 JvmtiConstantPoolReconstituter reconstituter(ikh); | |
2348 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
2349 return reconstituter.get_error(); | |
2350 } | |
2351 | |
2352 unsigned char *cpool_bytes; | |
2353 int cpool_size = reconstituter.cpool_size(); | |
2354 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
2355 return reconstituter.get_error(); | |
2356 } | |
2357 jvmtiError res = allocate(cpool_size, &cpool_bytes); | |
2358 if (res != JVMTI_ERROR_NONE) { | |
2359 return res; | |
2360 } | |
2361 reconstituter.copy_cpool_bytes(cpool_bytes); | |
2362 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
2363 return reconstituter.get_error(); | |
2364 } | |
2365 | |
2366 *constant_pool_count_ptr = constants->length(); | |
2367 *constant_pool_byte_count_ptr = cpool_size; | |
2368 *constant_pool_bytes_ptr = cpool_bytes; | |
2369 | |
2370 return JVMTI_ERROR_NONE; | |
2371 } /* end GetConstantPool */ | |
2372 | |
2373 | |
2374 // k_mirror - may be primitive, this must be checked | |
2375 // is_interface_ptr - pre-checked for NULL | |
2376 jvmtiError | |
2377 JvmtiEnv::IsInterface(oop k_mirror, jboolean* is_interface_ptr) { | |
2378 { | |
2379 bool result = false; | |
2380 if (!java_lang_Class::is_primitive(k_mirror)) { | |
2381 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2382 if (k != NULL && Klass::cast(k)->is_interface()) { | |
2383 result = true; | |
2384 } | |
2385 } | |
2386 *is_interface_ptr = result; | |
2387 } | |
2388 | |
2389 return JVMTI_ERROR_NONE; | |
2390 } /* end IsInterface */ | |
2391 | |
2392 | |
2393 // k_mirror - may be primitive, this must be checked | |
2394 // is_array_class_ptr - pre-checked for NULL | |
2395 jvmtiError | |
2396 JvmtiEnv::IsArrayClass(oop k_mirror, jboolean* is_array_class_ptr) { | |
2397 { | |
2398 bool result = false; | |
2399 if (!java_lang_Class::is_primitive(k_mirror)) { | |
2400 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2401 if (k != NULL && Klass::cast(k)->oop_is_array()) { | |
2402 result = true; | |
2403 } | |
2404 } | |
2405 *is_array_class_ptr = result; | |
2406 } | |
2407 | |
2408 return JVMTI_ERROR_NONE; | |
2409 } /* end IsArrayClass */ | |
2410 | |
2411 | |
2412 // k_mirror - may be primitive, this must be checked | |
2413 // classloader_ptr - pre-checked for NULL | |
2414 jvmtiError | |
2415 JvmtiEnv::GetClassLoader(oop k_mirror, jobject* classloader_ptr) { | |
2416 { | |
2417 if (java_lang_Class::is_primitive(k_mirror)) { | |
2418 *classloader_ptr = (jclass) jni_reference(Handle()); | |
2419 return JVMTI_ERROR_NONE; | |
2420 } | |
2421 JavaThread* current_thread = JavaThread::current(); | |
2422 HandleMark hm(current_thread); | |
2423 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2424 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
2425 | |
2426 oop result_oop = Klass::cast(k)->class_loader(); | |
2427 if (result_oop == NULL) { | |
2428 *classloader_ptr = (jclass) jni_reference(Handle()); | |
2429 return JVMTI_ERROR_NONE; | |
2430 } | |
2431 Handle result_handle = Handle(current_thread, result_oop); | |
2432 jclass result_jnihandle = (jclass) jni_reference(result_handle); | |
2433 *classloader_ptr = result_jnihandle; | |
2434 } | |
2435 return JVMTI_ERROR_NONE; | |
2436 } /* end GetClassLoader */ | |
2437 | |
2438 | |
2439 // k_mirror - may be primitive, this must be checked | |
2440 // source_debug_extension_ptr - pre-checked for NULL | |
2441 jvmtiError | |
2442 JvmtiEnv::GetSourceDebugExtension(oop k_mirror, char** source_debug_extension_ptr) { | |
2443 { | |
2444 if (java_lang_Class::is_primitive(k_mirror)) { | |
2445 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2446 } | |
2447 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2448 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
2449 if (!Klass::cast(k)->oop_is_instance()) { | |
2450 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2451 } | |
2452 symbolOop sdeOop = instanceKlass::cast(k)->source_debug_extension(); | |
2453 NULL_CHECK(sdeOop, JVMTI_ERROR_ABSENT_INFORMATION); | |
2454 | |
2455 { | |
2456 JavaThread* current_thread = JavaThread::current(); | |
2457 ResourceMark rm(current_thread); | |
2458 const char* sdecp = (const char*) sdeOop->as_C_string(); | |
2459 *source_debug_extension_ptr = (char *) jvmtiMalloc(strlen(sdecp)+1); | |
2460 strcpy(*source_debug_extension_ptr, sdecp); | |
2461 } | |
2462 } | |
2463 | |
2464 return JVMTI_ERROR_NONE; | |
2465 } /* end GetSourceDebugExtension */ | |
2466 | |
2467 // | |
2468 // Object functions | |
2469 // | |
2470 | |
2471 // hash_code_ptr - pre-checked for NULL | |
2472 jvmtiError | |
2473 JvmtiEnv::GetObjectHashCode(jobject object, jint* hash_code_ptr) { | |
2474 oop mirror = JNIHandles::resolve_external_guard(object); | |
2475 NULL_CHECK(mirror, JVMTI_ERROR_INVALID_OBJECT); | |
2476 NULL_CHECK(hash_code_ptr, JVMTI_ERROR_NULL_POINTER); | |
2477 | |
2478 { | |
2479 jint result = (jint) mirror->identity_hash(); | |
2480 *hash_code_ptr = result; | |
2481 } | |
2482 return JVMTI_ERROR_NONE; | |
2483 } /* end GetObjectHashCode */ | |
2484 | |
2485 | |
2486 // info_ptr - pre-checked for NULL | |
2487 jvmtiError | |
2488 JvmtiEnv::GetObjectMonitorUsage(jobject object, jvmtiMonitorUsage* info_ptr) { | |
2489 JavaThread* calling_thread = JavaThread::current(); | |
2490 jvmtiError err = get_object_monitor_usage(calling_thread, object, info_ptr); | |
2491 if (err == JVMTI_ERROR_THREAD_NOT_SUSPENDED) { | |
2492 // Some of the critical threads were not suspended. go to a safepoint and try again | |
2493 VM_GetObjectMonitorUsage op(this, calling_thread, object, info_ptr); | |
2494 VMThread::execute(&op); | |
2495 err = op.result(); | |
2496 } | |
2497 return err; | |
2498 } /* end GetObjectMonitorUsage */ | |
2499 | |
2500 | |
2501 // | |
2502 // Field functions | |
2503 // | |
2504 | |
2505 // name_ptr - NULL is a valid value, must be checked | |
2506 // signature_ptr - NULL is a valid value, must be checked | |
2507 // generic_ptr - NULL is a valid value, must be checked | |
2508 jvmtiError | |
2509 JvmtiEnv::GetFieldName(fieldDescriptor* fdesc_ptr, char** name_ptr, char** signature_ptr, char** generic_ptr) { | |
2510 JavaThread* current_thread = JavaThread::current(); | |
2511 ResourceMark rm(current_thread); | |
2512 if (name_ptr == NULL) { | |
2513 // just don't return the name | |
2514 } else { | |
2515 const char* fieldName = fdesc_ptr->name()->as_C_string(); | |
2516 *name_ptr = (char*) jvmtiMalloc(strlen(fieldName) + 1); | |
2517 if (*name_ptr == NULL) | |
2518 return JVMTI_ERROR_OUT_OF_MEMORY; | |
2519 strcpy(*name_ptr, fieldName); | |
2520 } | |
2521 if (signature_ptr== NULL) { | |
2522 // just don't return the signature | |
2523 } else { | |
2524 const char* fieldSignature = fdesc_ptr->signature()->as_C_string(); | |
2525 *signature_ptr = (char*) jvmtiMalloc(strlen(fieldSignature) + 1); | |
2526 if (*signature_ptr == NULL) | |
2527 return JVMTI_ERROR_OUT_OF_MEMORY; | |
2528 strcpy(*signature_ptr, fieldSignature); | |
2529 } | |
2530 if (generic_ptr != NULL) { | |
2531 *generic_ptr = NULL; | |
2532 symbolOop soop = fdesc_ptr->generic_signature(); | |
2533 if (soop != NULL) { | |
2534 const char* gen_sig = soop->as_C_string(); | |
2535 if (gen_sig != NULL) { | |
2536 jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr); | |
2537 if (err != JVMTI_ERROR_NONE) { | |
2538 return err; | |
2539 } | |
2540 strcpy(*generic_ptr, gen_sig); | |
2541 } | |
2542 } | |
2543 } | |
2544 return JVMTI_ERROR_NONE; | |
2545 } /* end GetFieldName */ | |
2546 | |
2547 | |
2548 // declaring_class_ptr - pre-checked for NULL | |
2549 jvmtiError | |
2550 JvmtiEnv::GetFieldDeclaringClass(fieldDescriptor* fdesc_ptr, jclass* declaring_class_ptr) { | |
2551 | |
2552 *declaring_class_ptr = get_jni_class_non_null(fdesc_ptr->field_holder()); | |
2553 return JVMTI_ERROR_NONE; | |
2554 } /* end GetFieldDeclaringClass */ | |
2555 | |
2556 | |
2557 // modifiers_ptr - pre-checked for NULL | |
2558 jvmtiError | |
2559 JvmtiEnv::GetFieldModifiers(fieldDescriptor* fdesc_ptr, jint* modifiers_ptr) { | |
2560 | |
2561 AccessFlags resultFlags = fdesc_ptr->access_flags(); | |
2562 jint result = resultFlags.as_int(); | |
2563 *modifiers_ptr = result; | |
2564 | |
2565 return JVMTI_ERROR_NONE; | |
2566 } /* end GetFieldModifiers */ | |
2567 | |
2568 | |
2569 // is_synthetic_ptr - pre-checked for NULL | |
2570 jvmtiError | |
2571 JvmtiEnv::IsFieldSynthetic(fieldDescriptor* fdesc_ptr, jboolean* is_synthetic_ptr) { | |
2572 *is_synthetic_ptr = fdesc_ptr->is_synthetic(); | |
2573 return JVMTI_ERROR_NONE; | |
2574 } /* end IsFieldSynthetic */ | |
2575 | |
2576 | |
2577 // | |
2578 // Method functions | |
2579 // | |
2580 | |
2581 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2582 // name_ptr - NULL is a valid value, must be checked | |
2583 // signature_ptr - NULL is a valid value, must be checked | |
2584 // generic_ptr - NULL is a valid value, must be checked | |
2585 jvmtiError | |
2586 JvmtiEnv::GetMethodName(methodOop method_oop, char** name_ptr, char** signature_ptr, char** generic_ptr) { | |
2587 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2588 JavaThread* current_thread = JavaThread::current(); | |
2589 | |
2590 ResourceMark rm(current_thread); // get the utf8 name and signature | |
2591 if (name_ptr == NULL) { | |
2592 // just don't return the name | |
2593 } else { | |
2594 const char* utf8_name = (const char *) method_oop->name()->as_utf8(); | |
2595 *name_ptr = (char *) jvmtiMalloc(strlen(utf8_name)+1); | |
2596 strcpy(*name_ptr, utf8_name); | |
2597 } | |
2598 if (signature_ptr == NULL) { | |
2599 // just don't return the signature | |
2600 } else { | |
2601 const char* utf8_signature = (const char *) method_oop->signature()->as_utf8(); | |
2602 *signature_ptr = (char *) jvmtiMalloc(strlen(utf8_signature) + 1); | |
2603 strcpy(*signature_ptr, utf8_signature); | |
2604 } | |
2605 | |
2606 if (generic_ptr != NULL) { | |
2607 *generic_ptr = NULL; | |
2608 symbolOop soop = method_oop->generic_signature(); | |
2609 if (soop != NULL) { | |
2610 const char* gen_sig = soop->as_C_string(); | |
2611 if (gen_sig != NULL) { | |
2612 jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr); | |
2613 if (err != JVMTI_ERROR_NONE) { | |
2614 return err; | |
2615 } | |
2616 strcpy(*generic_ptr, gen_sig); | |
2617 } | |
2618 } | |
2619 } | |
2620 return JVMTI_ERROR_NONE; | |
2621 } /* end GetMethodName */ | |
2622 | |
2623 | |
2624 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2625 // declaring_class_ptr - pre-checked for NULL | |
2626 jvmtiError | |
2627 JvmtiEnv::GetMethodDeclaringClass(methodOop method_oop, jclass* declaring_class_ptr) { | |
2628 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2629 (*declaring_class_ptr) = get_jni_class_non_null(method_oop->method_holder()); | |
2630 return JVMTI_ERROR_NONE; | |
2631 } /* end GetMethodDeclaringClass */ | |
2632 | |
2633 | |
2634 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2635 // modifiers_ptr - pre-checked for NULL | |
2636 jvmtiError | |
2637 JvmtiEnv::GetMethodModifiers(methodOop method_oop, jint* modifiers_ptr) { | |
2638 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2639 (*modifiers_ptr) = method_oop->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
2640 return JVMTI_ERROR_NONE; | |
2641 } /* end GetMethodModifiers */ | |
2642 | |
2643 | |
2644 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2645 // max_ptr - pre-checked for NULL | |
2646 jvmtiError | |
2647 JvmtiEnv::GetMaxLocals(methodOop method_oop, jint* max_ptr) { | |
2648 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2649 // get max stack | |
2650 (*max_ptr) = method_oop->max_locals(); | |
2651 return JVMTI_ERROR_NONE; | |
2652 } /* end GetMaxLocals */ | |
2653 | |
2654 | |
2655 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2656 // size_ptr - pre-checked for NULL | |
2657 jvmtiError | |
2658 JvmtiEnv::GetArgumentsSize(methodOop method_oop, jint* size_ptr) { | |
2659 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2660 // get size of arguments | |
2661 | |
2662 (*size_ptr) = method_oop->size_of_parameters(); | |
2663 return JVMTI_ERROR_NONE; | |
2664 } /* end GetArgumentsSize */ | |
2665 | |
2666 | |
2667 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2668 // entry_count_ptr - pre-checked for NULL | |
2669 // table_ptr - pre-checked for NULL | |
2670 jvmtiError | |
2671 JvmtiEnv::GetLineNumberTable(methodOop method_oop, jint* entry_count_ptr, jvmtiLineNumberEntry** table_ptr) { | |
2672 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2673 if (!method_oop->has_linenumber_table()) { | |
2674 return (JVMTI_ERROR_ABSENT_INFORMATION); | |
2675 } | |
2676 | |
2677 // The line number table is compressed so we don't know how big it is until decompressed. | |
2678 // Decompression is really fast so we just do it twice. | |
2679 | |
2680 // Compute size of table | |
2681 jint num_entries = 0; | |
2682 CompressedLineNumberReadStream stream(method_oop->compressed_linenumber_table()); | |
2683 while (stream.read_pair()) { | |
2684 num_entries++; | |
2685 } | |
2686 jvmtiLineNumberEntry *jvmti_table = | |
2687 (jvmtiLineNumberEntry *)jvmtiMalloc(num_entries * (sizeof(jvmtiLineNumberEntry))); | |
2688 | |
2689 // Fill jvmti table | |
2690 if (num_entries > 0) { | |
2691 int index = 0; | |
2692 CompressedLineNumberReadStream stream(method_oop->compressed_linenumber_table()); | |
2693 while (stream.read_pair()) { | |
2694 jvmti_table[index].start_location = (jlocation) stream.bci(); | |
2695 jvmti_table[index].line_number = (jint) stream.line(); | |
2696 index++; | |
2697 } | |
2698 assert(index == num_entries, "sanity check"); | |
2699 } | |
2700 | |
2701 // Set up results | |
2702 (*entry_count_ptr) = num_entries; | |
2703 (*table_ptr) = jvmti_table; | |
2704 | |
2705 return JVMTI_ERROR_NONE; | |
2706 } /* end GetLineNumberTable */ | |
2707 | |
2708 | |
2709 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2710 // start_location_ptr - pre-checked for NULL | |
2711 // end_location_ptr - pre-checked for NULL | |
2712 jvmtiError | |
2713 JvmtiEnv::GetMethodLocation(methodOop method_oop, jlocation* start_location_ptr, jlocation* end_location_ptr) { | |
2714 | |
2715 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2716 // get start and end location | |
2717 (*end_location_ptr) = (jlocation) (method_oop->code_size() - 1); | |
2718 if (method_oop->code_size() == 0) { | |
2719 // there is no code so there is no start location | |
2720 (*start_location_ptr) = (jlocation)(-1); | |
2721 } else { | |
2722 (*start_location_ptr) = (jlocation)(0); | |
2723 } | |
2724 | |
2725 return JVMTI_ERROR_NONE; | |
2726 } /* end GetMethodLocation */ | |
2727 | |
2728 | |
2729 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2730 // entry_count_ptr - pre-checked for NULL | |
2731 // table_ptr - pre-checked for NULL | |
2732 jvmtiError | |
2733 JvmtiEnv::GetLocalVariableTable(methodOop method_oop, jint* entry_count_ptr, jvmtiLocalVariableEntry** table_ptr) { | |
2734 | |
2735 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2736 JavaThread* current_thread = JavaThread::current(); | |
2737 | |
2738 // does the klass have any local variable information? | |
2739 instanceKlass* ik = instanceKlass::cast(method_oop->method_holder()); | |
2740 if (!ik->access_flags().has_localvariable_table()) { | |
2741 return (JVMTI_ERROR_ABSENT_INFORMATION); | |
2742 } | |
2743 | |
2744 constantPoolOop constants = method_oop->constants(); | |
2745 NULL_CHECK(constants, JVMTI_ERROR_ABSENT_INFORMATION); | |
2746 | |
2747 // in the vm localvariable table representation, 6 consecutive elements in the table | |
2748 // represent a 6-tuple of shorts | |
2749 // [start_pc, length, name_index, descriptor_index, signature_index, index] | |
2750 jint num_entries = method_oop->localvariable_table_length(); | |
2751 jvmtiLocalVariableEntry *jvmti_table = (jvmtiLocalVariableEntry *) | |
2752 jvmtiMalloc(num_entries * (sizeof(jvmtiLocalVariableEntry))); | |
2753 | |
2754 if (num_entries > 0) { | |
2755 LocalVariableTableElement* table = method_oop->localvariable_table_start(); | |
2756 for (int i = 0; i < num_entries; i++) { | |
2757 // get the 5 tuple information from the vm table | |
2758 jlocation start_location = (jlocation) table[i].start_bci; | |
2759 jint length = (jint) table[i].length; | |
2760 int name_index = (int) table[i].name_cp_index; | |
2761 int signature_index = (int) table[i].descriptor_cp_index; | |
2762 int generic_signature_index = (int) table[i].signature_cp_index; | |
2763 jint slot = (jint) table[i].slot; | |
2764 | |
2765 // get utf8 name and signature | |
2766 char *name_buf = NULL; | |
2767 char *sig_buf = NULL; | |
2768 char *gen_sig_buf = NULL; | |
2769 { | |
2770 ResourceMark rm(current_thread); | |
2771 | |
2772 const char *utf8_name = (const char *) constants->symbol_at(name_index)->as_utf8(); | |
2773 name_buf = (char *) jvmtiMalloc(strlen(utf8_name)+1); | |
2774 strcpy(name_buf, utf8_name); | |
2775 | |
2776 const char *utf8_signature = (const char *) constants->symbol_at(signature_index)->as_utf8(); | |
2777 sig_buf = (char *) jvmtiMalloc(strlen(utf8_signature)+1); | |
2778 strcpy(sig_buf, utf8_signature); | |
2779 | |
2780 if (generic_signature_index > 0) { | |
2781 const char *utf8_gen_sign = (const char *) | |
2782 constants->symbol_at(generic_signature_index)->as_utf8(); | |
2783 gen_sig_buf = (char *) jvmtiMalloc(strlen(utf8_gen_sign)+1); | |
2784 strcpy(gen_sig_buf, utf8_gen_sign); | |
2785 } | |
2786 } | |
2787 | |
2788 // fill in the jvmti local variable table | |
2789 jvmti_table[i].start_location = start_location; | |
2790 jvmti_table[i].length = length; | |
2791 jvmti_table[i].name = name_buf; | |
2792 jvmti_table[i].signature = sig_buf; | |
2793 jvmti_table[i].generic_signature = gen_sig_buf; | |
2794 jvmti_table[i].slot = slot; | |
2795 } | |
2796 } | |
2797 | |
2798 // set results | |
2799 (*entry_count_ptr) = num_entries; | |
2800 (*table_ptr) = jvmti_table; | |
2801 | |
2802 return JVMTI_ERROR_NONE; | |
2803 } /* end GetLocalVariableTable */ | |
2804 | |
2805 | |
2806 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2807 // bytecode_count_ptr - pre-checked for NULL | |
2808 // bytecodes_ptr - pre-checked for NULL | |
2809 jvmtiError | |
2810 JvmtiEnv::GetBytecodes(methodOop method_oop, jint* bytecode_count_ptr, unsigned char** bytecodes_ptr) { | |
2811 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2812 | |
2813 HandleMark hm; | |
2814 methodHandle method(method_oop); | |
2815 jint size = (jint)method->code_size(); | |
2816 jvmtiError err = allocate(size, bytecodes_ptr); | |
2817 if (err != JVMTI_ERROR_NONE) { | |
2818 return err; | |
2819 } | |
2820 | |
2821 (*bytecode_count_ptr) = size; | |
2822 // get byte codes | |
2823 JvmtiClassFileReconstituter::copy_bytecodes(method, *bytecodes_ptr); | |
2824 | |
2825 return JVMTI_ERROR_NONE; | |
2826 } /* end GetBytecodes */ | |
2827 | |
2828 | |
2829 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2830 // is_native_ptr - pre-checked for NULL | |
2831 jvmtiError | |
2832 JvmtiEnv::IsMethodNative(methodOop method_oop, jboolean* is_native_ptr) { | |
2833 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2834 (*is_native_ptr) = method_oop->is_native(); | |
2835 return JVMTI_ERROR_NONE; | |
2836 } /* end IsMethodNative */ | |
2837 | |
2838 | |
2839 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2840 // is_synthetic_ptr - pre-checked for NULL | |
2841 jvmtiError | |
2842 JvmtiEnv::IsMethodSynthetic(methodOop method_oop, jboolean* is_synthetic_ptr) { | |
2843 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2844 (*is_synthetic_ptr) = method_oop->is_synthetic(); | |
2845 return JVMTI_ERROR_NONE; | |
2846 } /* end IsMethodSynthetic */ | |
2847 | |
2848 | |
2849 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2850 // is_obsolete_ptr - pre-checked for NULL | |
2851 jvmtiError | |
2852 JvmtiEnv::IsMethodObsolete(methodOop method_oop, jboolean* is_obsolete_ptr) { | |
2853 if (method_oop == NULL || method_oop->is_obsolete()) { | |
2854 *is_obsolete_ptr = true; | |
2855 } else { | |
2856 *is_obsolete_ptr = false; | |
2857 } | |
2858 return JVMTI_ERROR_NONE; | |
2859 } /* end IsMethodObsolete */ | |
2860 | |
2861 // | |
2862 // Raw Monitor functions | |
2863 // | |
2864 | |
2865 // name - pre-checked for NULL | |
2866 // monitor_ptr - pre-checked for NULL | |
2867 jvmtiError | |
2868 JvmtiEnv::CreateRawMonitor(const char* name, jrawMonitorID* monitor_ptr) { | |
2869 JvmtiRawMonitor* rmonitor = new JvmtiRawMonitor(name); | |
2870 NULL_CHECK(rmonitor, JVMTI_ERROR_OUT_OF_MEMORY); | |
2871 | |
2872 *monitor_ptr = (jrawMonitorID)rmonitor; | |
2873 | |
2874 return JVMTI_ERROR_NONE; | |
2875 } /* end CreateRawMonitor */ | |
2876 | |
2877 | |
2878 // rmonitor - pre-checked for validity | |
2879 jvmtiError | |
2880 JvmtiEnv::DestroyRawMonitor(JvmtiRawMonitor * rmonitor) { | |
2881 if (Threads::number_of_threads() == 0) { | |
2882 // Remove this monitor from pending raw monitors list | |
2883 // if it has entered in onload or start phase. | |
2884 JvmtiPendingMonitors::destroy(rmonitor); | |
2885 } else { | |
2886 Thread* thread = Thread::current(); | |
2887 if (rmonitor->is_entered(thread)) { | |
2888 // The caller owns this monitor which we are about to destroy. | |
2889 // We exit the underlying synchronization object so that the | |
2890 // "delete monitor" call below can work without an assertion | |
2891 // failure on systems that don't like destroying synchronization | |
2892 // objects that are locked. | |
2893 int r; | |
2894 intptr_t recursion = rmonitor->recursions(); | |
2895 for (intptr_t i=0; i <= recursion; i++) { | |
2896 r = rmonitor->raw_exit(thread); | |
2897 assert(r == ObjectMonitor::OM_OK, "raw_exit should have worked"); | |
2898 if (r != ObjectMonitor::OM_OK) { // robustness | |
2899 return JVMTI_ERROR_INTERNAL; | |
2900 } | |
2901 } | |
2902 } | |
2903 if (rmonitor->owner() != NULL) { | |
2904 // The caller is trying to destroy a monitor that is locked by | |
2905 // someone else. While this is not forbidden by the JVMTI | |
2906 // spec, it will cause an assertion failure on systems that don't | |
2907 // like destroying synchronization objects that are locked. | |
2908 // We indicate a problem with the error return (and leak the | |
2909 // monitor's memory). | |
2910 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
2911 } | |
2912 } | |
2913 | |
2914 delete rmonitor; | |
2915 | |
2916 return JVMTI_ERROR_NONE; | |
2917 } /* end DestroyRawMonitor */ | |
2918 | |
2919 | |
2920 // rmonitor - pre-checked for validity | |
2921 jvmtiError | |
2922 JvmtiEnv::RawMonitorEnter(JvmtiRawMonitor * rmonitor) { | |
2923 if (Threads::number_of_threads() == 0) { | |
2924 // No JavaThreads exist so ObjectMonitor enter cannot be | |
2925 // used, add this raw monitor to the pending list. | |
2926 // The pending monitors will be actually entered when | |
2927 // the VM is setup. | |
2928 // See transition_pending_raw_monitors in create_vm() | |
2929 // in thread.cpp. | |
2930 JvmtiPendingMonitors::enter(rmonitor); | |
2931 } else { | |
2932 int r; | |
2933 Thread* thread = Thread::current(); | |
2934 | |
2935 if (thread->is_Java_thread()) { | |
2936 JavaThread* current_thread = (JavaThread*)thread; | |
2937 | |
2938 #ifdef PROPER_TRANSITIONS | |
2939 // Not really unknown but ThreadInVMfromNative does more than we want | |
2940 ThreadInVMfromUnknown __tiv; | |
2941 { | |
2942 ThreadBlockInVM __tbivm(current_thread); | |
2943 r = rmonitor->raw_enter(current_thread); | |
2944 } | |
2945 #else | |
2946 /* Transition to thread_blocked without entering vm state */ | |
2947 /* This is really evil. Normally you can't undo _thread_blocked */ | |
2948 /* transitions like this because it would cause us to miss a */ | |
2949 /* safepoint but since the thread was already in _thread_in_native */ | |
2950 /* the thread is not leaving a safepoint safe state and it will */ | |
2951 /* block when it tries to return from native. We can't safepoint */ | |
2952 /* block in here because we could deadlock the vmthread. Blech. */ | |
2953 | |
2954 JavaThreadState state = current_thread->thread_state(); | |
2955 assert(state == _thread_in_native, "Must be _thread_in_native"); | |
2956 // frame should already be walkable since we are in native | |
2957 assert(!current_thread->has_last_Java_frame() || | |
2958 current_thread->frame_anchor()->walkable(), "Must be walkable"); | |
2959 current_thread->set_thread_state(_thread_blocked); | |
2960 | |
2961 r = rmonitor->raw_enter(current_thread); | |
2962 // restore state, still at a safepoint safe state | |
2963 current_thread->set_thread_state(state); | |
2964 | |
2965 #endif /* PROPER_TRANSITIONS */ | |
2966 assert(r == ObjectMonitor::OM_OK, "raw_enter should have worked"); | |
2967 } else { | |
2968 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
2969 r = rmonitor->raw_enter(thread); | |
2970 } else { | |
2971 ShouldNotReachHere(); | |
2972 } | |
2973 } | |
2974 | |
2975 if (r != ObjectMonitor::OM_OK) { // robustness | |
2976 return JVMTI_ERROR_INTERNAL; | |
2977 } | |
2978 } | |
2979 return JVMTI_ERROR_NONE; | |
2980 } /* end RawMonitorEnter */ | |
2981 | |
2982 | |
2983 // rmonitor - pre-checked for validity | |
2984 jvmtiError | |
2985 JvmtiEnv::RawMonitorExit(JvmtiRawMonitor * rmonitor) { | |
2986 jvmtiError err = JVMTI_ERROR_NONE; | |
2987 | |
2988 if (Threads::number_of_threads() == 0) { | |
2989 // No JavaThreads exist so just remove this monitor from the pending list. | |
2990 // Bool value from exit is false if rmonitor is not in the list. | |
2991 if (!JvmtiPendingMonitors::exit(rmonitor)) { | |
2992 err = JVMTI_ERROR_NOT_MONITOR_OWNER; | |
2993 } | |
2994 } else { | |
2995 int r; | |
2996 Thread* thread = Thread::current(); | |
2997 | |
2998 if (thread->is_Java_thread()) { | |
2999 JavaThread* current_thread = (JavaThread*)thread; | |
3000 #ifdef PROPER_TRANSITIONS | |
3001 // Not really unknown but ThreadInVMfromNative does more than we want | |
3002 ThreadInVMfromUnknown __tiv; | |
3003 #endif /* PROPER_TRANSITIONS */ | |
3004 r = rmonitor->raw_exit(current_thread); | |
3005 } else { | |
3006 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
3007 r = rmonitor->raw_exit(thread); | |
3008 } else { | |
3009 ShouldNotReachHere(); | |
3010 } | |
3011 } | |
3012 | |
3013 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
3014 err = JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3015 } else { | |
3016 assert(r == ObjectMonitor::OM_OK, "raw_exit should have worked"); | |
3017 if (r != ObjectMonitor::OM_OK) { // robustness | |
3018 err = JVMTI_ERROR_INTERNAL; | |
3019 } | |
3020 } | |
3021 } | |
3022 return err; | |
3023 } /* end RawMonitorExit */ | |
3024 | |
3025 | |
3026 // rmonitor - pre-checked for validity | |
3027 jvmtiError | |
3028 JvmtiEnv::RawMonitorWait(JvmtiRawMonitor * rmonitor, jlong millis) { | |
3029 int r; | |
3030 Thread* thread = Thread::current(); | |
3031 | |
3032 if (thread->is_Java_thread()) { | |
3033 JavaThread* current_thread = (JavaThread*)thread; | |
3034 #ifdef PROPER_TRANSITIONS | |
3035 // Not really unknown but ThreadInVMfromNative does more than we want | |
3036 ThreadInVMfromUnknown __tiv; | |
3037 { | |
3038 ThreadBlockInVM __tbivm(current_thread); | |
3039 r = rmonitor->raw_wait(millis, true, current_thread); | |
3040 } | |
3041 #else | |
3042 /* Transition to thread_blocked without entering vm state */ | |
3043 /* This is really evil. Normally you can't undo _thread_blocked */ | |
3044 /* transitions like this because it would cause us to miss a */ | |
3045 /* safepoint but since the thread was already in _thread_in_native */ | |
3046 /* the thread is not leaving a safepoint safe state and it will */ | |
3047 /* block when it tries to return from native. We can't safepoint */ | |
3048 /* block in here because we could deadlock the vmthread. Blech. */ | |
3049 | |
3050 JavaThreadState state = current_thread->thread_state(); | |
3051 assert(state == _thread_in_native, "Must be _thread_in_native"); | |
3052 // frame should already be walkable since we are in native | |
3053 assert(!current_thread->has_last_Java_frame() || | |
3054 current_thread->frame_anchor()->walkable(), "Must be walkable"); | |
3055 current_thread->set_thread_state(_thread_blocked); | |
3056 | |
3057 r = rmonitor->raw_wait(millis, true, current_thread); | |
3058 // restore state, still at a safepoint safe state | |
3059 current_thread->set_thread_state(state); | |
3060 | |
3061 #endif /* PROPER_TRANSITIONS */ | |
3062 } else { | |
3063 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
3064 r = rmonitor->raw_wait(millis, true, thread); | |
3065 } else { | |
3066 ShouldNotReachHere(); | |
3067 } | |
3068 } | |
3069 | |
3070 switch (r) { | |
3071 case ObjectMonitor::OM_INTERRUPTED: | |
3072 return JVMTI_ERROR_INTERRUPT; | |
3073 case ObjectMonitor::OM_ILLEGAL_MONITOR_STATE: | |
3074 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3075 } | |
3076 assert(r == ObjectMonitor::OM_OK, "raw_wait should have worked"); | |
3077 if (r != ObjectMonitor::OM_OK) { // robustness | |
3078 return JVMTI_ERROR_INTERNAL; | |
3079 } | |
3080 | |
3081 return JVMTI_ERROR_NONE; | |
3082 } /* end RawMonitorWait */ | |
3083 | |
3084 | |
3085 // rmonitor - pre-checked for validity | |
3086 jvmtiError | |
3087 JvmtiEnv::RawMonitorNotify(JvmtiRawMonitor * rmonitor) { | |
3088 int r; | |
3089 Thread* thread = Thread::current(); | |
3090 | |
3091 if (thread->is_Java_thread()) { | |
3092 JavaThread* current_thread = (JavaThread*)thread; | |
3093 // Not really unknown but ThreadInVMfromNative does more than we want | |
3094 ThreadInVMfromUnknown __tiv; | |
3095 r = rmonitor->raw_notify(current_thread); | |
3096 } else { | |
3097 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
3098 r = rmonitor->raw_notify(thread); | |
3099 } else { | |
3100 ShouldNotReachHere(); | |
3101 } | |
3102 } | |
3103 | |
3104 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
3105 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3106 } | |
3107 assert(r == ObjectMonitor::OM_OK, "raw_notify should have worked"); | |
3108 if (r != ObjectMonitor::OM_OK) { // robustness | |
3109 return JVMTI_ERROR_INTERNAL; | |
3110 } | |
3111 | |
3112 return JVMTI_ERROR_NONE; | |
3113 } /* end RawMonitorNotify */ | |
3114 | |
3115 | |
3116 // rmonitor - pre-checked for validity | |
3117 jvmtiError | |
3118 JvmtiEnv::RawMonitorNotifyAll(JvmtiRawMonitor * rmonitor) { | |
3119 int r; | |
3120 Thread* thread = Thread::current(); | |
3121 | |
3122 if (thread->is_Java_thread()) { | |
3123 JavaThread* current_thread = (JavaThread*)thread; | |
3124 ThreadInVMfromUnknown __tiv; | |
3125 r = rmonitor->raw_notifyAll(current_thread); | |
3126 } else { | |
3127 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
3128 r = rmonitor->raw_notifyAll(thread); | |
3129 } else { | |
3130 ShouldNotReachHere(); | |
3131 } | |
3132 } | |
3133 | |
3134 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
3135 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3136 } | |
3137 assert(r == ObjectMonitor::OM_OK, "raw_notifyAll should have worked"); | |
3138 if (r != ObjectMonitor::OM_OK) { // robustness | |
3139 return JVMTI_ERROR_INTERNAL; | |
3140 } | |
3141 | |
3142 return JVMTI_ERROR_NONE; | |
3143 } /* end RawMonitorNotifyAll */ | |
3144 | |
3145 | |
3146 // | |
3147 // JNI Function Interception functions | |
3148 // | |
3149 | |
3150 | |
3151 // function_table - pre-checked for NULL | |
3152 jvmtiError | |
3153 JvmtiEnv::SetJNIFunctionTable(const jniNativeInterface* function_table) { | |
3154 // Copy jni function table at safepoint. | |
3155 VM_JNIFunctionTableCopier copier(function_table); | |
3156 VMThread::execute(&copier); | |
3157 | |
3158 return JVMTI_ERROR_NONE; | |
3159 } /* end SetJNIFunctionTable */ | |
3160 | |
3161 | |
3162 // function_table - pre-checked for NULL | |
3163 jvmtiError | |
3164 JvmtiEnv::GetJNIFunctionTable(jniNativeInterface** function_table) { | |
3165 *function_table=(jniNativeInterface*)jvmtiMalloc(sizeof(jniNativeInterface)); | |
3166 if (*function_table == NULL) | |
3167 return JVMTI_ERROR_OUT_OF_MEMORY; | |
3168 memcpy(*function_table,(JavaThread::current())->get_jni_functions(),sizeof(jniNativeInterface)); | |
3169 return JVMTI_ERROR_NONE; | |
3170 } /* end GetJNIFunctionTable */ | |
3171 | |
3172 | |
3173 // | |
3174 // Event Management functions | |
3175 // | |
3176 | |
3177 jvmtiError | |
3178 JvmtiEnv::GenerateEvents(jvmtiEvent event_type) { | |
3179 // can only generate two event types | |
3180 if (event_type != JVMTI_EVENT_COMPILED_METHOD_LOAD && | |
3181 event_type != JVMTI_EVENT_DYNAMIC_CODE_GENERATED) { | |
3182 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
3183 } | |
3184 | |
3185 // for compiled_method_load events we must check that the environment | |
3186 // has the can_generate_compiled_method_load_events capability. | |
3187 if (event_type == JVMTI_EVENT_COMPILED_METHOD_LOAD) { | |
3188 if (get_capabilities()->can_generate_compiled_method_load_events == 0) { | |
3189 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; | |
3190 } | |
3191 return JvmtiCodeBlobEvents::generate_compiled_method_load_events(this); | |
3192 } else { | |
3193 return JvmtiCodeBlobEvents::generate_dynamic_code_events(this); | |
3194 } | |
3195 | |
3196 } /* end GenerateEvents */ | |
3197 | |
3198 | |
3199 // | |
3200 // Extension Mechanism functions | |
3201 // | |
3202 | |
3203 // extension_count_ptr - pre-checked for NULL | |
3204 // extensions - pre-checked for NULL | |
3205 jvmtiError | |
3206 JvmtiEnv::GetExtensionFunctions(jint* extension_count_ptr, jvmtiExtensionFunctionInfo** extensions) { | |
3207 return JvmtiExtensions::get_functions(this, extension_count_ptr, extensions); | |
3208 } /* end GetExtensionFunctions */ | |
3209 | |
3210 | |
3211 // extension_count_ptr - pre-checked for NULL | |
3212 // extensions - pre-checked for NULL | |
3213 jvmtiError | |
3214 JvmtiEnv::GetExtensionEvents(jint* extension_count_ptr, jvmtiExtensionEventInfo** extensions) { | |
3215 return JvmtiExtensions::get_events(this, extension_count_ptr, extensions); | |
3216 } /* end GetExtensionEvents */ | |
3217 | |
3218 | |
3219 // callback - NULL is a valid value, must be checked | |
3220 jvmtiError | |
3221 JvmtiEnv::SetExtensionEventCallback(jint extension_event_index, jvmtiExtensionEvent callback) { | |
3222 return JvmtiExtensions::set_event_callback(this, extension_event_index, callback); | |
3223 } /* end SetExtensionEventCallback */ | |
3224 | |
3225 // | |
3226 // Timers functions | |
3227 // | |
3228 | |
3229 // info_ptr - pre-checked for NULL | |
3230 jvmtiError | |
3231 JvmtiEnv::GetCurrentThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) { | |
3232 os::current_thread_cpu_time_info(info_ptr); | |
3233 return JVMTI_ERROR_NONE; | |
3234 } /* end GetCurrentThreadCpuTimerInfo */ | |
3235 | |
3236 | |
3237 // nanos_ptr - pre-checked for NULL | |
3238 jvmtiError | |
3239 JvmtiEnv::GetCurrentThreadCpuTime(jlong* nanos_ptr) { | |
3240 *nanos_ptr = os::current_thread_cpu_time(); | |
3241 return JVMTI_ERROR_NONE; | |
3242 } /* end GetCurrentThreadCpuTime */ | |
3243 | |
3244 | |
3245 // info_ptr - pre-checked for NULL | |
3246 jvmtiError | |
3247 JvmtiEnv::GetThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) { | |
3248 os::thread_cpu_time_info(info_ptr); | |
3249 return JVMTI_ERROR_NONE; | |
3250 } /* end GetThreadCpuTimerInfo */ | |
3251 | |
3252 | |
3253 // Threads_lock NOT held, java_thread not protected by lock | |
3254 // java_thread - pre-checked | |
3255 // nanos_ptr - pre-checked for NULL | |
3256 jvmtiError | |
3257 JvmtiEnv::GetThreadCpuTime(JavaThread* java_thread, jlong* nanos_ptr) { | |
3258 *nanos_ptr = os::thread_cpu_time(java_thread); | |
3259 return JVMTI_ERROR_NONE; | |
3260 } /* end GetThreadCpuTime */ | |
3261 | |
3262 | |
3263 // info_ptr - pre-checked for NULL | |
3264 jvmtiError | |
3265 JvmtiEnv::GetTimerInfo(jvmtiTimerInfo* info_ptr) { | |
3266 os::javaTimeNanos_info(info_ptr); | |
3267 return JVMTI_ERROR_NONE; | |
3268 } /* end GetTimerInfo */ | |
3269 | |
3270 | |
3271 // nanos_ptr - pre-checked for NULL | |
3272 jvmtiError | |
3273 JvmtiEnv::GetTime(jlong* nanos_ptr) { | |
3274 *nanos_ptr = os::javaTimeNanos(); | |
3275 return JVMTI_ERROR_NONE; | |
3276 } /* end GetTime */ | |
3277 | |
3278 | |
3279 // processor_count_ptr - pre-checked for NULL | |
3280 jvmtiError | |
3281 JvmtiEnv::GetAvailableProcessors(jint* processor_count_ptr) { | |
3282 *processor_count_ptr = os::active_processor_count(); | |
3283 return JVMTI_ERROR_NONE; | |
3284 } /* end GetAvailableProcessors */ | |
3285 | |
3286 // | |
3287 // System Properties functions | |
3288 // | |
3289 | |
3290 // count_ptr - pre-checked for NULL | |
3291 // property_ptr - pre-checked for NULL | |
3292 jvmtiError | |
3293 JvmtiEnv::GetSystemProperties(jint* count_ptr, char*** property_ptr) { | |
3294 jvmtiError err = JVMTI_ERROR_NONE; | |
3295 | |
3296 *count_ptr = Arguments::PropertyList_count(Arguments::system_properties()); | |
3297 | |
3298 err = allocate(*count_ptr * sizeof(char *), (unsigned char **)property_ptr); | |
3299 if (err != JVMTI_ERROR_NONE) { | |
3300 return err; | |
3301 } | |
3302 int i = 0 ; | |
3303 for (SystemProperty* p = Arguments::system_properties(); p != NULL && i < *count_ptr; p = p->next(), i++) { | |
3304 const char *key = p->key(); | |
3305 char **tmp_value = *property_ptr+i; | |
3306 err = allocate((strlen(key)+1) * sizeof(char), (unsigned char**)tmp_value); | |
3307 if (err == JVMTI_ERROR_NONE) { | |
3308 strcpy(*tmp_value, key); | |
3309 } else { | |
3310 // clean up previously allocated memory. | |
3311 for (int j=0; j<i; j++) { | |
3312 Deallocate((unsigned char*)*property_ptr+j); | |
3313 } | |
3314 Deallocate((unsigned char*)property_ptr); | |
3315 break; | |
3316 } | |
3317 } | |
3318 return err; | |
3319 } /* end GetSystemProperties */ | |
3320 | |
3321 | |
3322 // property - pre-checked for NULL | |
3323 // value_ptr - pre-checked for NULL | |
3324 jvmtiError | |
3325 JvmtiEnv::GetSystemProperty(const char* property, char** value_ptr) { | |
3326 jvmtiError err = JVMTI_ERROR_NONE; | |
3327 const char *value; | |
3328 | |
3329 value = Arguments::PropertyList_get_value(Arguments::system_properties(), property); | |
3330 if (value == NULL) { | |
3331 err = JVMTI_ERROR_NOT_AVAILABLE; | |
3332 } else { | |
3333 err = allocate((strlen(value)+1) * sizeof(char), (unsigned char **)value_ptr); | |
3334 if (err == JVMTI_ERROR_NONE) { | |
3335 strcpy(*value_ptr, value); | |
3336 } | |
3337 } | |
3338 return err; | |
3339 } /* end GetSystemProperty */ | |
3340 | |
3341 | |
3342 // property - pre-checked for NULL | |
3343 // value - NULL is a valid value, must be checked | |
3344 jvmtiError | |
3345 JvmtiEnv::SetSystemProperty(const char* property, const char* value) { | |
3346 jvmtiError err =JVMTI_ERROR_NOT_AVAILABLE; | |
3347 | |
3348 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
3349 if (strcmp(property, p->key()) == 0) { | |
3350 if (p->set_value((char *)value)) { | |
3351 err = JVMTI_ERROR_NONE; | |
3352 } | |
3353 } | |
3354 } | |
3355 return err; | |
3356 } /* end SetSystemProperty */ | |
3357 | |
3358 #endif // !JVMTI_KERNEL |