Mercurial > hg > truffle
annotate src/share/vm/prims/jvmtiEnv.cpp @ 1682:e5dfb3ccb88b
6969569: assert(is_static() && is_constant()) failed: illegal call to constant_value()
Summary: Add missing is_static guard.
Reviewed-by: twisti
author | kvn |
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date | Fri, 23 Jul 2010 10:07:46 -0700 |
parents | c18cbe5936b8 |
children | ce6848d0666d |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2003, 2009, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
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 | |
1121 | 35 JvmtiEnv::JvmtiEnv(jint version) : JvmtiEnvBase(version) { |
0 | 36 } |
37 | |
38 JvmtiEnv::~JvmtiEnv() { | |
39 } | |
40 | |
41 JvmtiEnv* | |
1121 | 42 JvmtiEnv::create_a_jvmti(jint version) { |
43 return new JvmtiEnv(version); | |
0 | 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); | |
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102 if (state == NULL) { |
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103 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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104 } |
0 | 105 } |
106 state->env_thread_state(this)->set_agent_thread_local_storage_data((void*)data); | |
107 return JVMTI_ERROR_NONE; | |
108 } /* end SetThreadLocalStorage */ | |
109 | |
110 | |
111 // Threads_lock NOT held | |
112 // thread - NOT pre-checked | |
113 // data_ptr - pre-checked for NULL | |
114 jvmtiError | |
115 JvmtiEnv::GetThreadLocalStorage(jthread thread, void** data_ptr) { | |
116 JavaThread* current_thread = JavaThread::current(); | |
117 if (thread == NULL) { | |
118 JvmtiThreadState* state = current_thread->jvmti_thread_state(); | |
119 *data_ptr = (state == NULL) ? NULL : | |
120 state->env_thread_state(this)->get_agent_thread_local_storage_data(); | |
121 } else { | |
122 | |
123 // jvmti_GetThreadLocalStorage is "in native" and doesn't transition | |
124 // the thread to _thread_in_vm. However, when the TLS for a thread | |
125 // other than the current thread is required we need to transition | |
126 // from native so as to resolve the jthread. | |
127 | |
128 ThreadInVMfromNative __tiv(current_thread); | |
129 __ENTRY(jvmtiError, JvmtiEnv::GetThreadLocalStorage , current_thread) | |
130 debug_only(VMNativeEntryWrapper __vew;) | |
131 | |
132 oop thread_oop = JNIHandles::resolve_external_guard(thread); | |
133 if (thread_oop == NULL) { | |
134 return JVMTI_ERROR_INVALID_THREAD; | |
135 } | |
1142 | 136 if (!thread_oop->is_a(SystemDictionary::Thread_klass())) { |
0 | 137 return JVMTI_ERROR_INVALID_THREAD; |
138 } | |
139 JavaThread* java_thread = java_lang_Thread::thread(thread_oop); | |
140 if (java_thread == NULL) { | |
141 return JVMTI_ERROR_THREAD_NOT_ALIVE; | |
142 } | |
143 JvmtiThreadState* state = java_thread->jvmti_thread_state(); | |
144 *data_ptr = (state == NULL) ? NULL : | |
145 state->env_thread_state(this)->get_agent_thread_local_storage_data(); | |
146 } | |
147 return JVMTI_ERROR_NONE; | |
148 } /* end GetThreadLocalStorage */ | |
149 | |
150 // | |
151 // Class functions | |
152 // | |
153 | |
154 // class_count_ptr - pre-checked for NULL | |
155 // classes_ptr - pre-checked for NULL | |
156 jvmtiError | |
157 JvmtiEnv::GetLoadedClasses(jint* class_count_ptr, jclass** classes_ptr) { | |
158 return JvmtiGetLoadedClasses::getLoadedClasses(this, class_count_ptr, classes_ptr); | |
159 } /* end GetLoadedClasses */ | |
160 | |
161 | |
162 // initiating_loader - NULL is a valid value, must be checked | |
163 // class_count_ptr - pre-checked for NULL | |
164 // classes_ptr - pre-checked for NULL | |
165 jvmtiError | |
166 JvmtiEnv::GetClassLoaderClasses(jobject initiating_loader, jint* class_count_ptr, jclass** classes_ptr) { | |
167 return JvmtiGetLoadedClasses::getClassLoaderClasses(this, initiating_loader, | |
168 class_count_ptr, classes_ptr); | |
169 } /* end GetClassLoaderClasses */ | |
170 | |
171 // k_mirror - may be primitive, this must be checked | |
172 // is_modifiable_class_ptr - pre-checked for NULL | |
173 jvmtiError | |
174 JvmtiEnv::IsModifiableClass(oop k_mirror, jboolean* is_modifiable_class_ptr) { | |
175 *is_modifiable_class_ptr = VM_RedefineClasses::is_modifiable_class(k_mirror)? | |
176 JNI_TRUE : JNI_FALSE; | |
177 return JVMTI_ERROR_NONE; | |
178 } /* end IsModifiableClass */ | |
179 | |
180 // class_count - pre-checked to be greater than or equal to 0 | |
181 // classes - pre-checked for NULL | |
182 jvmtiError | |
183 JvmtiEnv::RetransformClasses(jint class_count, const jclass* classes) { | |
184 //TODO: add locking | |
185 | |
186 int index; | |
187 JavaThread* current_thread = JavaThread::current(); | |
188 ResourceMark rm(current_thread); | |
189 | |
190 jvmtiClassDefinition* class_definitions = | |
191 NEW_RESOURCE_ARRAY(jvmtiClassDefinition, class_count); | |
192 NULL_CHECK(class_definitions, JVMTI_ERROR_OUT_OF_MEMORY); | |
193 | |
194 for (index = 0; index < class_count; index++) { | |
195 HandleMark hm(current_thread); | |
196 | |
197 jclass jcls = classes[index]; | |
198 oop k_mirror = JNIHandles::resolve_external_guard(jcls); | |
199 if (k_mirror == NULL) { | |
200 return JVMTI_ERROR_INVALID_CLASS; | |
201 } | |
1142 | 202 if (!k_mirror->is_a(SystemDictionary::Class_klass())) { |
0 | 203 return JVMTI_ERROR_INVALID_CLASS; |
204 } | |
205 | |
206 if (java_lang_Class::is_primitive(k_mirror)) { | |
207 return JVMTI_ERROR_UNMODIFIABLE_CLASS; | |
208 } | |
209 | |
210 klassOop k_oop = java_lang_Class::as_klassOop(k_mirror); | |
211 KlassHandle klass(current_thread, k_oop); | |
212 | |
213 jint status = klass->jvmti_class_status(); | |
214 if (status & (JVMTI_CLASS_STATUS_ERROR)) { | |
215 return JVMTI_ERROR_INVALID_CLASS; | |
216 } | |
217 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { | |
218 return JVMTI_ERROR_UNMODIFIABLE_CLASS; | |
219 } | |
220 | |
221 instanceKlassHandle ikh(current_thread, k_oop); | |
222 if (ikh->get_cached_class_file_bytes() == NULL) { | |
223 // not cached, we need to reconstitute the class file from VM representation | |
224 constantPoolHandle constants(current_thread, ikh->constants()); | |
225 ObjectLocker ol(constants, current_thread); // lock constant pool while we query it | |
226 | |
227 JvmtiClassFileReconstituter reconstituter(ikh); | |
228 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
229 return reconstituter.get_error(); | |
230 } | |
231 | |
232 class_definitions[index].class_byte_count = (jint)reconstituter.class_file_size(); | |
233 class_definitions[index].class_bytes = (unsigned char*) | |
234 reconstituter.class_file_bytes(); | |
235 } else { | |
236 // it is cached, get it from the cache | |
237 class_definitions[index].class_byte_count = ikh->get_cached_class_file_len(); | |
238 class_definitions[index].class_bytes = ikh->get_cached_class_file_bytes(); | |
239 } | |
240 class_definitions[index].klass = jcls; | |
241 } | |
242 VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_retransform); | |
243 VMThread::execute(&op); | |
244 return (op.check_error()); | |
245 } /* end RetransformClasses */ | |
246 | |
247 | |
248 // class_count - pre-checked to be greater than or equal to 0 | |
249 // class_definitions - pre-checked for NULL | |
250 jvmtiError | |
251 JvmtiEnv::RedefineClasses(jint class_count, const jvmtiClassDefinition* class_definitions) { | |
252 //TODO: add locking | |
253 VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_redefine); | |
254 VMThread::execute(&op); | |
255 return (op.check_error()); | |
256 } /* end RedefineClasses */ | |
257 | |
258 | |
259 // | |
260 // Object functions | |
261 // | |
262 | |
263 // size_ptr - pre-checked for NULL | |
264 jvmtiError | |
265 JvmtiEnv::GetObjectSize(jobject object, jlong* size_ptr) { | |
266 oop mirror = JNIHandles::resolve_external_guard(object); | |
267 NULL_CHECK(mirror, JVMTI_ERROR_INVALID_OBJECT); | |
268 | |
1142 | 269 if (mirror->klass() == SystemDictionary::Class_klass()) { |
0 | 270 if (!java_lang_Class::is_primitive(mirror)) { |
271 mirror = java_lang_Class::as_klassOop(mirror); | |
272 assert(mirror != NULL, "class for non-primitive mirror must exist"); | |
273 } | |
274 } | |
275 | |
276 *size_ptr = mirror->size() * wordSize; | |
277 return JVMTI_ERROR_NONE; | |
278 } /* end GetObjectSize */ | |
279 | |
280 // | |
281 // Method functions | |
282 // | |
283 | |
284 // prefix - NULL is a valid value, must be checked | |
285 jvmtiError | |
286 JvmtiEnv::SetNativeMethodPrefix(const char* prefix) { | |
287 return prefix == NULL? | |
288 SetNativeMethodPrefixes(0, NULL) : | |
289 SetNativeMethodPrefixes(1, (char**)&prefix); | |
290 } /* end SetNativeMethodPrefix */ | |
291 | |
292 | |
293 // prefix_count - pre-checked to be greater than or equal to 0 | |
294 // prefixes - pre-checked for NULL | |
295 jvmtiError | |
296 JvmtiEnv::SetNativeMethodPrefixes(jint prefix_count, char** prefixes) { | |
297 // Have to grab JVMTI thread state lock to be sure that some thread | |
298 // isn't accessing the prefixes at the same time we are setting them. | |
299 // No locks during VM bring-up. | |
300 if (Threads::number_of_threads() == 0) { | |
301 return set_native_method_prefixes(prefix_count, prefixes); | |
302 } else { | |
303 MutexLocker mu(JvmtiThreadState_lock); | |
304 return set_native_method_prefixes(prefix_count, prefixes); | |
305 } | |
306 } /* end SetNativeMethodPrefixes */ | |
307 | |
308 // | |
309 // Event Management functions | |
310 // | |
311 | |
312 // callbacks - NULL is a valid value, must be checked | |
313 // size_of_callbacks - pre-checked to be greater than or equal to 0 | |
314 jvmtiError | |
315 JvmtiEnv::SetEventCallbacks(const jvmtiEventCallbacks* callbacks, jint size_of_callbacks) { | |
316 JvmtiEventController::set_event_callbacks(this, callbacks, size_of_callbacks); | |
317 return JVMTI_ERROR_NONE; | |
318 } /* end SetEventCallbacks */ | |
319 | |
320 | |
321 // event_thread - NULL is a valid value, must be checked | |
322 jvmtiError | |
323 JvmtiEnv::SetEventNotificationMode(jvmtiEventMode mode, jvmtiEvent event_type, jthread event_thread, ...) { | |
324 JavaThread* java_thread = NULL; | |
325 if (event_thread != NULL) { | |
326 oop thread_oop = JNIHandles::resolve_external_guard(event_thread); | |
327 if (thread_oop == NULL) { | |
328 return JVMTI_ERROR_INVALID_THREAD; | |
329 } | |
1142 | 330 if (!thread_oop->is_a(SystemDictionary::Thread_klass())) { |
0 | 331 return JVMTI_ERROR_INVALID_THREAD; |
332 } | |
333 java_thread = java_lang_Thread::thread(thread_oop); | |
334 if (java_thread == NULL) { | |
335 return JVMTI_ERROR_THREAD_NOT_ALIVE; | |
336 } | |
337 } | |
338 | |
339 // event_type must be valid | |
340 if (!JvmtiEventController::is_valid_event_type(event_type)) { | |
341 return JVMTI_ERROR_INVALID_EVENT_TYPE; | |
342 } | |
343 | |
344 // global events cannot be controlled at thread level. | |
345 if (java_thread != NULL && JvmtiEventController::is_global_event(event_type)) { | |
346 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
347 } | |
348 | |
349 bool enabled = (mode == JVMTI_ENABLE); | |
350 | |
351 // assure that needed capabilities are present | |
352 if (enabled && !JvmtiUtil::has_event_capability(event_type, get_capabilities())) { | |
353 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; | |
354 } | |
355 | |
356 if (event_type == JVMTI_EVENT_CLASS_FILE_LOAD_HOOK && enabled) { | |
357 record_class_file_load_hook_enabled(); | |
358 } | |
359 JvmtiEventController::set_user_enabled(this, java_thread, event_type, enabled); | |
360 | |
361 return JVMTI_ERROR_NONE; | |
362 } /* end SetEventNotificationMode */ | |
363 | |
364 // | |
365 // Capability functions | |
366 // | |
367 | |
368 // capabilities_ptr - pre-checked for NULL | |
369 jvmtiError | |
370 JvmtiEnv::GetPotentialCapabilities(jvmtiCapabilities* capabilities_ptr) { | |
371 JvmtiManageCapabilities::get_potential_capabilities(get_capabilities(), | |
372 get_prohibited_capabilities(), | |
373 capabilities_ptr); | |
374 return JVMTI_ERROR_NONE; | |
375 } /* end GetPotentialCapabilities */ | |
376 | |
377 | |
378 // capabilities_ptr - pre-checked for NULL | |
379 jvmtiError | |
380 JvmtiEnv::AddCapabilities(const jvmtiCapabilities* capabilities_ptr) { | |
381 return JvmtiManageCapabilities::add_capabilities(get_capabilities(), | |
382 get_prohibited_capabilities(), | |
383 capabilities_ptr, | |
384 get_capabilities()); | |
385 } /* end AddCapabilities */ | |
386 | |
387 | |
388 // capabilities_ptr - pre-checked for NULL | |
389 jvmtiError | |
390 JvmtiEnv::RelinquishCapabilities(const jvmtiCapabilities* capabilities_ptr) { | |
391 JvmtiManageCapabilities::relinquish_capabilities(get_capabilities(), capabilities_ptr, get_capabilities()); | |
392 return JVMTI_ERROR_NONE; | |
393 } /* end RelinquishCapabilities */ | |
394 | |
395 | |
396 // capabilities_ptr - pre-checked for NULL | |
397 jvmtiError | |
398 JvmtiEnv::GetCapabilities(jvmtiCapabilities* capabilities_ptr) { | |
399 JvmtiManageCapabilities::copy_capabilities(get_capabilities(), capabilities_ptr); | |
400 return JVMTI_ERROR_NONE; | |
401 } /* end GetCapabilities */ | |
402 | |
403 // | |
404 // Class Loader Search functions | |
405 // | |
406 | |
407 // segment - pre-checked for NULL | |
408 jvmtiError | |
409 JvmtiEnv::AddToBootstrapClassLoaderSearch(const char* segment) { | |
410 jvmtiPhase phase = get_phase(); | |
411 if (phase == JVMTI_PHASE_ONLOAD) { | |
412 Arguments::append_sysclasspath(segment); | |
413 return JVMTI_ERROR_NONE; | |
1121 | 414 } else if (use_version_1_0_semantics()) { |
415 // This JvmtiEnv requested version 1.0 semantics and this function | |
416 // is only allowed in the ONLOAD phase in version 1.0 so we need to | |
417 // return an error here. | |
418 return JVMTI_ERROR_WRONG_PHASE; | |
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419 } else if (phase == JVMTI_PHASE_LIVE) { |
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420 // The phase is checked by the wrapper that called this function, |
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421 // but this thread could be racing with the thread that is |
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422 // terminating the VM so we check one more time. |
0 | 423 |
424 // create the zip entry | |
425 ClassPathZipEntry* zip_entry = ClassLoader::create_class_path_zip_entry(segment); | |
426 if (zip_entry == NULL) { | |
427 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
428 } | |
429 | |
430 // lock the loader | |
431 Thread* thread = Thread::current(); | |
432 HandleMark hm; | |
433 Handle loader_lock = Handle(thread, SystemDictionary::system_loader_lock()); | |
434 | |
435 ObjectLocker ol(loader_lock, thread); | |
436 | |
437 // add the jar file to the bootclasspath | |
438 if (TraceClassLoading) { | |
439 tty->print_cr("[Opened %s]", zip_entry->name()); | |
440 } | |
441 ClassLoader::add_to_list(zip_entry); | |
442 return JVMTI_ERROR_NONE; | |
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443 } else { |
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444 return JVMTI_ERROR_WRONG_PHASE; |
0 | 445 } |
446 | |
447 } /* end AddToBootstrapClassLoaderSearch */ | |
448 | |
449 | |
450 // segment - pre-checked for NULL | |
451 jvmtiError | |
452 JvmtiEnv::AddToSystemClassLoaderSearch(const char* segment) { | |
453 jvmtiPhase phase = get_phase(); | |
454 | |
455 if (phase == JVMTI_PHASE_ONLOAD) { | |
456 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
457 if (strcmp("java.class.path", p->key()) == 0) { | |
458 p->append_value(segment); | |
459 break; | |
460 } | |
461 } | |
462 return JVMTI_ERROR_NONE; | |
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463 } else if (phase == JVMTI_PHASE_LIVE) { |
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464 // The phase is checked by the wrapper that called this function, |
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465 // but this thread could be racing with the thread that is |
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466 // terminating the VM so we check one more time. |
0 | 467 HandleMark hm; |
468 | |
469 // create the zip entry (which will open the zip file and hence | |
470 // check that the segment is indeed a zip file). | |
471 ClassPathZipEntry* zip_entry = ClassLoader::create_class_path_zip_entry(segment); | |
472 if (zip_entry == NULL) { | |
473 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
474 } | |
475 delete zip_entry; // no longer needed | |
476 | |
477 // lock the loader | |
478 Thread* THREAD = Thread::current(); | |
479 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); | |
480 | |
481 ObjectLocker ol(loader, THREAD); | |
482 | |
483 // need the path as java.lang.String | |
484 Handle path = java_lang_String::create_from_str(segment, THREAD); | |
485 if (HAS_PENDING_EXCEPTION) { | |
486 CLEAR_PENDING_EXCEPTION; | |
487 return JVMTI_ERROR_INTERNAL; | |
488 } | |
489 | |
490 instanceKlassHandle loader_ik(THREAD, loader->klass()); | |
491 | |
492 // Invoke the appendToClassPathForInstrumentation method - if the method | |
493 // is not found it means the loader doesn't support adding to the class path | |
494 // in the live phase. | |
495 { | |
496 JavaValue res(T_VOID); | |
497 JavaCalls::call_special(&res, | |
498 loader, | |
499 loader_ik, | |
500 vmSymbolHandles::appendToClassPathForInstrumentation_name(), | |
501 vmSymbolHandles::appendToClassPathForInstrumentation_signature(), | |
502 path, | |
503 THREAD); | |
504 if (HAS_PENDING_EXCEPTION) { | |
505 symbolOop ex_name = PENDING_EXCEPTION->klass()->klass_part()->name(); | |
506 CLEAR_PENDING_EXCEPTION; | |
507 | |
508 if (ex_name == vmSymbols::java_lang_NoSuchMethodError()) { | |
509 return JVMTI_ERROR_CLASS_LOADER_UNSUPPORTED; | |
510 } else { | |
511 return JVMTI_ERROR_INTERNAL; | |
512 } | |
513 } | |
514 } | |
515 | |
516 return JVMTI_ERROR_NONE; | |
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518 return JVMTI_ERROR_WRONG_PHASE; |
0 | 519 } |
520 } /* end AddToSystemClassLoaderSearch */ | |
521 | |
522 // | |
523 // General functions | |
524 // | |
525 | |
526 // phase_ptr - pre-checked for NULL | |
527 jvmtiError | |
528 JvmtiEnv::GetPhase(jvmtiPhase* phase_ptr) { | |
529 *phase_ptr = get_phase(); | |
530 return JVMTI_ERROR_NONE; | |
531 } /* end GetPhase */ | |
532 | |
533 | |
534 jvmtiError | |
535 JvmtiEnv::DisposeEnvironment() { | |
536 dispose(); | |
537 return JVMTI_ERROR_NONE; | |
538 } /* end DisposeEnvironment */ | |
539 | |
540 | |
541 // data - NULL is a valid value, must be checked | |
542 jvmtiError | |
543 JvmtiEnv::SetEnvironmentLocalStorage(const void* data) { | |
544 set_env_local_storage(data); | |
545 return JVMTI_ERROR_NONE; | |
546 } /* end SetEnvironmentLocalStorage */ | |
547 | |
548 | |
549 // data_ptr - pre-checked for NULL | |
550 jvmtiError | |
551 JvmtiEnv::GetEnvironmentLocalStorage(void** data_ptr) { | |
552 *data_ptr = (void*)get_env_local_storage(); | |
553 return JVMTI_ERROR_NONE; | |
554 } /* end GetEnvironmentLocalStorage */ | |
555 | |
556 // version_ptr - pre-checked for NULL | |
557 jvmtiError | |
558 JvmtiEnv::GetVersionNumber(jint* version_ptr) { | |
559 *version_ptr = JVMTI_VERSION; | |
560 return JVMTI_ERROR_NONE; | |
561 } /* end GetVersionNumber */ | |
562 | |
563 | |
564 // name_ptr - pre-checked for NULL | |
565 jvmtiError | |
566 JvmtiEnv::GetErrorName(jvmtiError error, char** name_ptr) { | |
567 if (error < JVMTI_ERROR_NONE || error > JVMTI_ERROR_MAX) { | |
568 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
569 } | |
570 const char *name = JvmtiUtil::error_name(error); | |
571 if (name == NULL) { | |
572 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
573 } | |
574 size_t len = strlen(name) + 1; | |
575 jvmtiError err = allocate(len, (unsigned char**)name_ptr); | |
576 if (err == JVMTI_ERROR_NONE) { | |
577 memcpy(*name_ptr, name, len); | |
578 } | |
579 return err; | |
580 } /* end GetErrorName */ | |
581 | |
582 | |
583 jvmtiError | |
584 JvmtiEnv::SetVerboseFlag(jvmtiVerboseFlag flag, jboolean value) { | |
585 switch (flag) { | |
586 case JVMTI_VERBOSE_OTHER: | |
587 // ignore | |
588 break; | |
589 case JVMTI_VERBOSE_CLASS: | |
590 TraceClassLoading = value != 0; | |
591 TraceClassUnloading = value != 0; | |
592 break; | |
593 case JVMTI_VERBOSE_GC: | |
594 PrintGC = value != 0; | |
595 break; | |
596 case JVMTI_VERBOSE_JNI: | |
597 PrintJNIResolving = value != 0; | |
598 break; | |
599 default: | |
600 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
601 }; | |
602 return JVMTI_ERROR_NONE; | |
603 } /* end SetVerboseFlag */ | |
604 | |
605 | |
606 // format_ptr - pre-checked for NULL | |
607 jvmtiError | |
608 JvmtiEnv::GetJLocationFormat(jvmtiJlocationFormat* format_ptr) { | |
609 *format_ptr = JVMTI_JLOCATION_JVMBCI; | |
610 return JVMTI_ERROR_NONE; | |
611 } /* end GetJLocationFormat */ | |
612 | |
613 #ifndef JVMTI_KERNEL | |
614 | |
615 // | |
616 // Thread functions | |
617 // | |
618 | |
619 // Threads_lock NOT held | |
620 // thread - NOT pre-checked | |
621 // thread_state_ptr - pre-checked for NULL | |
622 jvmtiError | |
623 JvmtiEnv::GetThreadState(jthread thread, jint* thread_state_ptr) { | |
624 jint state; | |
625 oop thread_oop; | |
626 JavaThread* thr; | |
627 | |
628 if (thread == NULL) { | |
629 thread_oop = JavaThread::current()->threadObj(); | |
630 } else { | |
631 thread_oop = JNIHandles::resolve_external_guard(thread); | |
632 } | |
633 | |
1142 | 634 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) { |
0 | 635 return JVMTI_ERROR_INVALID_THREAD; |
636 } | |
637 | |
638 // get most state bits | |
639 state = (jint)java_lang_Thread::get_thread_status(thread_oop); | |
640 | |
641 // add more state bits | |
642 thr = java_lang_Thread::thread(thread_oop); | |
643 if (thr != NULL) { | |
644 JavaThreadState jts = thr->thread_state(); | |
645 | |
646 if (thr->is_being_ext_suspended()) { | |
647 state |= JVMTI_THREAD_STATE_SUSPENDED; | |
648 } | |
649 if (jts == _thread_in_native) { | |
650 state |= JVMTI_THREAD_STATE_IN_NATIVE; | |
651 } | |
652 OSThread* osThread = thr->osthread(); | |
653 if (osThread != NULL && osThread->interrupted()) { | |
654 state |= JVMTI_THREAD_STATE_INTERRUPTED; | |
655 } | |
656 } | |
657 | |
658 *thread_state_ptr = state; | |
659 return JVMTI_ERROR_NONE; | |
660 } /* end GetThreadState */ | |
661 | |
662 | |
663 // thread_ptr - pre-checked for NULL | |
664 jvmtiError | |
665 JvmtiEnv::GetCurrentThread(jthread* thread_ptr) { | |
666 JavaThread* current_thread = JavaThread::current(); | |
667 *thread_ptr = (jthread)JNIHandles::make_local(current_thread, current_thread->threadObj()); | |
668 return JVMTI_ERROR_NONE; | |
669 } /* end GetCurrentThread */ | |
670 | |
671 | |
672 // threads_count_ptr - pre-checked for NULL | |
673 // threads_ptr - pre-checked for NULL | |
674 jvmtiError | |
675 JvmtiEnv::GetAllThreads(jint* threads_count_ptr, jthread** threads_ptr) { | |
676 int nthreads = 0; | |
677 Handle *thread_objs = NULL; | |
678 ResourceMark rm; | |
679 HandleMark hm; | |
680 | |
681 // enumerate threads (including agent threads) | |
682 ThreadsListEnumerator tle(Thread::current(), true); | |
683 nthreads = tle.num_threads(); | |
684 *threads_count_ptr = nthreads; | |
685 | |
686 if (nthreads == 0) { | |
687 *threads_ptr = NULL; | |
688 return JVMTI_ERROR_NONE; | |
689 } | |
690 | |
691 thread_objs = NEW_RESOURCE_ARRAY(Handle, nthreads); | |
692 NULL_CHECK(thread_objs, JVMTI_ERROR_OUT_OF_MEMORY); | |
693 | |
694 for (int i=0; i < nthreads; i++) { | |
695 thread_objs[i] = Handle(tle.get_threadObj(i)); | |
696 } | |
697 | |
698 // have to make global handles outside of Threads_lock | |
699 jthread *jthreads = new_jthreadArray(nthreads, thread_objs); | |
700 NULL_CHECK(jthreads, JVMTI_ERROR_OUT_OF_MEMORY); | |
701 | |
702 *threads_ptr = jthreads; | |
703 return JVMTI_ERROR_NONE; | |
704 } /* end GetAllThreads */ | |
705 | |
706 | |
707 // Threads_lock NOT held, java_thread not protected by lock | |
708 // java_thread - pre-checked | |
709 jvmtiError | |
710 JvmtiEnv::SuspendThread(JavaThread* java_thread) { | |
711 // don't allow hidden thread suspend request. | |
712 if (java_thread->is_hidden_from_external_view()) { | |
713 return (JVMTI_ERROR_NONE); | |
714 } | |
715 | |
716 { | |
717 MutexLockerEx ml(java_thread->SR_lock(), Mutex::_no_safepoint_check_flag); | |
718 if (java_thread->is_external_suspend()) { | |
719 // don't allow nested external suspend requests. | |
720 return (JVMTI_ERROR_THREAD_SUSPENDED); | |
721 } | |
722 if (java_thread->is_exiting()) { // thread is in the process of exiting | |
723 return (JVMTI_ERROR_THREAD_NOT_ALIVE); | |
724 } | |
725 java_thread->set_external_suspend(); | |
726 } | |
727 | |
728 if (!JvmtiSuspendControl::suspend(java_thread)) { | |
729 // the thread was in the process of exiting | |
730 return (JVMTI_ERROR_THREAD_NOT_ALIVE); | |
731 } | |
732 return JVMTI_ERROR_NONE; | |
733 } /* end SuspendThread */ | |
734 | |
735 | |
736 // request_count - pre-checked to be greater than or equal to 0 | |
737 // request_list - pre-checked for NULL | |
738 // results - pre-checked for NULL | |
739 jvmtiError | |
740 JvmtiEnv::SuspendThreadList(jint request_count, const jthread* request_list, jvmtiError* results) { | |
741 int needSafepoint = 0; // > 0 if we need a safepoint | |
742 for (int i = 0; i < request_count; i++) { | |
743 JavaThread *java_thread = get_JavaThread(request_list[i]); | |
744 if (java_thread == NULL) { | |
745 results[i] = JVMTI_ERROR_INVALID_THREAD; | |
746 continue; | |
747 } | |
748 // the thread has not yet run or has exited (not on threads list) | |
749 if (java_thread->threadObj() == NULL) { | |
750 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
751 continue; | |
752 } | |
753 if (java_lang_Thread::thread(java_thread->threadObj()) == NULL) { | |
754 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
755 continue; | |
756 } | |
757 // don't allow hidden thread suspend request. | |
758 if (java_thread->is_hidden_from_external_view()) { | |
759 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend | |
760 continue; | |
761 } | |
762 | |
763 { | |
764 MutexLockerEx ml(java_thread->SR_lock(), Mutex::_no_safepoint_check_flag); | |
765 if (java_thread->is_external_suspend()) { | |
766 // don't allow nested external suspend requests. | |
767 results[i] = JVMTI_ERROR_THREAD_SUSPENDED; | |
768 continue; | |
769 } | |
770 if (java_thread->is_exiting()) { // thread is in the process of exiting | |
771 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
772 continue; | |
773 } | |
774 java_thread->set_external_suspend(); | |
775 } | |
776 if (java_thread->thread_state() == _thread_in_native) { | |
777 // We need to try and suspend native threads here. Threads in | |
778 // other states will self-suspend on their next transition. | |
779 if (!JvmtiSuspendControl::suspend(java_thread)) { | |
780 // The thread was in the process of exiting. Force another | |
781 // safepoint to make sure that this thread transitions. | |
782 needSafepoint++; | |
783 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
784 continue; | |
785 } | |
786 } else { | |
787 needSafepoint++; | |
788 } | |
789 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend | |
790 } | |
791 if (needSafepoint > 0) { | |
792 VM_ForceSafepoint vfs; | |
793 VMThread::execute(&vfs); | |
794 } | |
795 // per-thread suspend results returned via results parameter | |
796 return JVMTI_ERROR_NONE; | |
797 } /* end SuspendThreadList */ | |
798 | |
799 | |
800 // Threads_lock NOT held, java_thread not protected by lock | |
801 // java_thread - pre-checked | |
802 jvmtiError | |
803 JvmtiEnv::ResumeThread(JavaThread* java_thread) { | |
804 // don't allow hidden thread resume request. | |
805 if (java_thread->is_hidden_from_external_view()) { | |
806 return JVMTI_ERROR_NONE; | |
807 } | |
808 | |
809 if (!java_thread->is_being_ext_suspended()) { | |
810 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
811 } | |
812 | |
813 if (!JvmtiSuspendControl::resume(java_thread)) { | |
814 return JVMTI_ERROR_INTERNAL; | |
815 } | |
816 return JVMTI_ERROR_NONE; | |
817 } /* end ResumeThread */ | |
818 | |
819 | |
820 // request_count - pre-checked to be greater than or equal to 0 | |
821 // request_list - pre-checked for NULL | |
822 // results - pre-checked for NULL | |
823 jvmtiError | |
824 JvmtiEnv::ResumeThreadList(jint request_count, const jthread* request_list, jvmtiError* results) { | |
825 for (int i = 0; i < request_count; i++) { | |
826 JavaThread *java_thread = get_JavaThread(request_list[i]); | |
827 if (java_thread == NULL) { | |
828 results[i] = JVMTI_ERROR_INVALID_THREAD; | |
829 continue; | |
830 } | |
831 // don't allow hidden thread resume request. | |
832 if (java_thread->is_hidden_from_external_view()) { | |
833 results[i] = JVMTI_ERROR_NONE; // indicate successful resume | |
834 continue; | |
835 } | |
836 if (!java_thread->is_being_ext_suspended()) { | |
837 results[i] = JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
838 continue; | |
839 } | |
840 | |
841 if (!JvmtiSuspendControl::resume(java_thread)) { | |
842 results[i] = JVMTI_ERROR_INTERNAL; | |
843 continue; | |
844 } | |
845 | |
846 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend | |
847 } | |
848 // per-thread resume results returned via results parameter | |
849 return JVMTI_ERROR_NONE; | |
850 } /* end ResumeThreadList */ | |
851 | |
852 | |
853 // Threads_lock NOT held, java_thread not protected by lock | |
854 // java_thread - pre-checked | |
855 jvmtiError | |
856 JvmtiEnv::StopThread(JavaThread* java_thread, jobject exception) { | |
857 oop e = JNIHandles::resolve_external_guard(exception); | |
858 NULL_CHECK(e, JVMTI_ERROR_NULL_POINTER); | |
859 | |
860 JavaThread::send_async_exception(java_thread->threadObj(), e); | |
861 | |
862 return JVMTI_ERROR_NONE; | |
863 | |
864 } /* end StopThread */ | |
865 | |
866 | |
867 // Threads_lock NOT held | |
868 // thread - NOT pre-checked | |
869 jvmtiError | |
870 JvmtiEnv::InterruptThread(jthread thread) { | |
871 oop thread_oop = JNIHandles::resolve_external_guard(thread); | |
1142 | 872 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) |
0 | 873 return JVMTI_ERROR_INVALID_THREAD; |
874 | |
875 JavaThread* current_thread = JavaThread::current(); | |
876 | |
877 // Todo: this is a duplicate of JVM_Interrupt; share code in future | |
878 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
879 MutexLockerEx ml(current_thread->threadObj() == thread_oop ? NULL : Threads_lock); | |
880 // We need to re-resolve the java_thread, since a GC might have happened during the | |
881 // acquire of the lock | |
882 | |
883 JavaThread* java_thread = java_lang_Thread::thread(JNIHandles::resolve_external_guard(thread)); | |
884 NULL_CHECK(java_thread, JVMTI_ERROR_THREAD_NOT_ALIVE); | |
885 | |
886 Thread::interrupt(java_thread); | |
887 | |
888 return JVMTI_ERROR_NONE; | |
889 } /* end InterruptThread */ | |
890 | |
891 | |
892 // Threads_lock NOT held | |
893 // thread - NOT pre-checked | |
894 // info_ptr - pre-checked for NULL | |
895 jvmtiError | |
896 JvmtiEnv::GetThreadInfo(jthread thread, jvmtiThreadInfo* info_ptr) { | |
897 ResourceMark rm; | |
898 HandleMark hm; | |
899 | |
900 JavaThread* current_thread = JavaThread::current(); | |
901 | |
902 // if thread is NULL the current thread is used | |
903 oop thread_oop; | |
904 if (thread == NULL) { | |
905 thread_oop = current_thread->threadObj(); | |
906 } else { | |
907 thread_oop = JNIHandles::resolve_external_guard(thread); | |
908 } | |
1142 | 909 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) |
0 | 910 return JVMTI_ERROR_INVALID_THREAD; |
911 | |
912 Handle thread_obj(current_thread, thread_oop); | |
913 typeArrayHandle name; | |
914 ThreadPriority priority; | |
915 Handle thread_group; | |
916 Handle context_class_loader; | |
917 bool is_daemon; | |
918 | |
919 { MutexLocker mu(Threads_lock); | |
920 | |
921 name = typeArrayHandle(current_thread, java_lang_Thread::name(thread_obj())); | |
922 priority = java_lang_Thread::priority(thread_obj()); | |
923 thread_group = Handle(current_thread, java_lang_Thread::threadGroup(thread_obj())); | |
924 is_daemon = java_lang_Thread::is_daemon(thread_obj()); | |
925 | |
926 oop loader = java_lang_Thread::context_class_loader(thread_obj()); | |
927 context_class_loader = Handle(current_thread, loader); | |
928 } | |
929 { const char *n; | |
930 | |
931 if (name() != NULL) { | |
932 n = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length()); | |
933 } else { | |
934 n = UNICODE::as_utf8(NULL, 0); | |
935 } | |
936 | |
937 info_ptr->name = (char *) jvmtiMalloc(strlen(n)+1); | |
938 if (info_ptr->name == NULL) | |
939 return JVMTI_ERROR_OUT_OF_MEMORY; | |
940 | |
941 strcpy(info_ptr->name, n); | |
942 } | |
943 info_ptr->is_daemon = is_daemon; | |
944 info_ptr->priority = priority; | |
945 | |
946 info_ptr->context_class_loader = (context_class_loader.is_null()) ? NULL : | |
947 jni_reference(context_class_loader); | |
948 info_ptr->thread_group = jni_reference(thread_group); | |
949 | |
950 return JVMTI_ERROR_NONE; | |
951 } /* end GetThreadInfo */ | |
952 | |
953 | |
954 // Threads_lock NOT held, java_thread not protected by lock | |
955 // java_thread - pre-checked | |
956 // owned_monitor_count_ptr - pre-checked for NULL | |
957 // owned_monitors_ptr - pre-checked for NULL | |
958 jvmtiError | |
959 JvmtiEnv::GetOwnedMonitorInfo(JavaThread* java_thread, jint* owned_monitor_count_ptr, jobject** owned_monitors_ptr) { | |
960 jvmtiError err = JVMTI_ERROR_NONE; | |
961 JavaThread* calling_thread = JavaThread::current(); | |
962 | |
963 // growable array of jvmti monitors info on the C-heap | |
964 GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list = | |
965 new (ResourceObj::C_HEAP) GrowableArray<jvmtiMonitorStackDepthInfo*>(1, true); | |
966 | |
967 uint32_t debug_bits = 0; | |
968 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
969 err = get_owned_monitors(calling_thread, java_thread, owned_monitors_list); | |
970 } else { | |
971 // JVMTI get monitors info at safepoint. Do not require target thread to | |
972 // be suspended. | |
973 VM_GetOwnedMonitorInfo op(this, calling_thread, java_thread, owned_monitors_list); | |
974 VMThread::execute(&op); | |
975 err = op.result(); | |
976 } | |
977 jint owned_monitor_count = owned_monitors_list->length(); | |
978 if (err == JVMTI_ERROR_NONE) { | |
979 if ((err = allocate(owned_monitor_count * sizeof(jobject *), | |
980 (unsigned char**)owned_monitors_ptr)) == JVMTI_ERROR_NONE) { | |
981 // copy into the returned array | |
982 for (int i = 0; i < owned_monitor_count; i++) { | |
983 (*owned_monitors_ptr)[i] = | |
984 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->monitor; | |
985 } | |
986 *owned_monitor_count_ptr = owned_monitor_count; | |
987 } | |
988 } | |
989 // clean up. | |
990 for (int i = 0; i < owned_monitor_count; i++) { | |
991 deallocate((unsigned char*)owned_monitors_list->at(i)); | |
992 } | |
993 delete owned_monitors_list; | |
994 | |
995 return err; | |
996 } /* end GetOwnedMonitorInfo */ | |
997 | |
998 | |
999 // Threads_lock NOT held, java_thread not protected by lock | |
1000 // java_thread - pre-checked | |
1001 // monitor_info_count_ptr - pre-checked for NULL | |
1002 // monitor_info_ptr - pre-checked for NULL | |
1003 jvmtiError | |
1004 JvmtiEnv::GetOwnedMonitorStackDepthInfo(JavaThread* java_thread, jint* monitor_info_count_ptr, jvmtiMonitorStackDepthInfo** monitor_info_ptr) { | |
1005 jvmtiError err = JVMTI_ERROR_NONE; | |
1006 JavaThread* calling_thread = JavaThread::current(); | |
1007 | |
1008 // growable array of jvmti monitors info on the C-heap | |
1009 GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list = | |
1010 new (ResourceObj::C_HEAP) GrowableArray<jvmtiMonitorStackDepthInfo*>(1, true); | |
1011 | |
1012 uint32_t debug_bits = 0; | |
1013 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
1014 err = get_owned_monitors(calling_thread, java_thread, owned_monitors_list); | |
1015 } else { | |
1016 // JVMTI get owned monitors info at safepoint. Do not require target thread to | |
1017 // be suspended. | |
1018 VM_GetOwnedMonitorInfo op(this, calling_thread, java_thread, owned_monitors_list); | |
1019 VMThread::execute(&op); | |
1020 err = op.result(); | |
1021 } | |
1022 | |
1023 jint owned_monitor_count = owned_monitors_list->length(); | |
1024 if (err == JVMTI_ERROR_NONE) { | |
1025 if ((err = allocate(owned_monitor_count * sizeof(jvmtiMonitorStackDepthInfo), | |
1026 (unsigned char**)monitor_info_ptr)) == JVMTI_ERROR_NONE) { | |
1027 // copy to output array. | |
1028 for (int i = 0; i < owned_monitor_count; i++) { | |
1029 (*monitor_info_ptr)[i].monitor = | |
1030 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->monitor; | |
1031 (*monitor_info_ptr)[i].stack_depth = | |
1032 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->stack_depth; | |
1033 } | |
1034 } | |
1035 *monitor_info_count_ptr = owned_monitor_count; | |
1036 } | |
1037 | |
1038 // clean up. | |
1039 for (int i = 0; i < owned_monitor_count; i++) { | |
1040 deallocate((unsigned char*)owned_monitors_list->at(i)); | |
1041 } | |
1042 delete owned_monitors_list; | |
1043 | |
1044 return err; | |
1045 } /* end GetOwnedMonitorStackDepthInfo */ | |
1046 | |
1047 | |
1048 // Threads_lock NOT held, java_thread not protected by lock | |
1049 // java_thread - pre-checked | |
1050 // monitor_ptr - pre-checked for NULL | |
1051 jvmtiError | |
1052 JvmtiEnv::GetCurrentContendedMonitor(JavaThread* java_thread, jobject* monitor_ptr) { | |
1053 jvmtiError err = JVMTI_ERROR_NONE; | |
1054 uint32_t debug_bits = 0; | |
1055 JavaThread* calling_thread = JavaThread::current(); | |
1056 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
1057 err = get_current_contended_monitor(calling_thread, java_thread, monitor_ptr); | |
1058 } else { | |
1059 // get contended monitor information at safepoint. | |
1060 VM_GetCurrentContendedMonitor op(this, calling_thread, java_thread, monitor_ptr); | |
1061 VMThread::execute(&op); | |
1062 err = op.result(); | |
1063 } | |
1064 return err; | |
1065 } /* end GetCurrentContendedMonitor */ | |
1066 | |
1067 | |
1068 // Threads_lock NOT held | |
1069 // thread - NOT pre-checked | |
1070 // proc - pre-checked for NULL | |
1071 // arg - NULL is a valid value, must be checked | |
1072 jvmtiError | |
1073 JvmtiEnv::RunAgentThread(jthread thread, jvmtiStartFunction proc, const void* arg, jint priority) { | |
1074 oop thread_oop = JNIHandles::resolve_external_guard(thread); | |
1142 | 1075 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) { |
0 | 1076 return JVMTI_ERROR_INVALID_THREAD; |
1077 } | |
1078 if (priority < JVMTI_THREAD_MIN_PRIORITY || priority > JVMTI_THREAD_MAX_PRIORITY) { | |
1079 return JVMTI_ERROR_INVALID_PRIORITY; | |
1080 } | |
1081 | |
1082 //Thread-self | |
1083 JavaThread* current_thread = JavaThread::current(); | |
1084 | |
1085 Handle thread_hndl(current_thread, thread_oop); | |
1086 { | |
1087 MutexLocker mu(Threads_lock); // grab Threads_lock | |
1088 | |
1089 JvmtiAgentThread *new_thread = new JvmtiAgentThread(this, proc, arg); | |
1090 | |
1091 // At this point it may be possible that no osthread was created for the | |
1092 // JavaThread due to lack of memory. | |
1093 if (new_thread == NULL || new_thread->osthread() == NULL) { | |
1094 if (new_thread) delete new_thread; | |
1095 return JVMTI_ERROR_OUT_OF_MEMORY; | |
1096 } | |
1097 | |
1098 java_lang_Thread::set_thread(thread_hndl(), new_thread); | |
1099 java_lang_Thread::set_priority(thread_hndl(), (ThreadPriority)priority); | |
1100 java_lang_Thread::set_daemon(thread_hndl()); | |
1101 | |
1102 new_thread->set_threadObj(thread_hndl()); | |
1103 Threads::add(new_thread); | |
1104 Thread::start(new_thread); | |
1105 } // unlock Threads_lock | |
1106 | |
1107 return JVMTI_ERROR_NONE; | |
1108 } /* end RunAgentThread */ | |
1109 | |
1110 // | |
1111 // Thread Group functions | |
1112 // | |
1113 | |
1114 // group_count_ptr - pre-checked for NULL | |
1115 // groups_ptr - pre-checked for NULL | |
1116 jvmtiError | |
1117 JvmtiEnv::GetTopThreadGroups(jint* group_count_ptr, jthreadGroup** groups_ptr) { | |
1118 JavaThread* current_thread = JavaThread::current(); | |
1119 | |
1120 // Only one top level thread group now. | |
1121 *group_count_ptr = 1; | |
1122 | |
1123 // Allocate memory to store global-refs to the thread groups. | |
1124 // Assume this area is freed by caller. | |
1125 *groups_ptr = (jthreadGroup *) jvmtiMalloc((sizeof(jthreadGroup)) * (*group_count_ptr)); | |
1126 | |
1127 NULL_CHECK(*groups_ptr, JVMTI_ERROR_OUT_OF_MEMORY); | |
1128 | |
1129 // Convert oop to Handle, then convert Handle to global-ref. | |
1130 { | |
1131 HandleMark hm(current_thread); | |
1132 Handle system_thread_group(current_thread, Universe::system_thread_group()); | |
1133 *groups_ptr[0] = jni_reference(system_thread_group); | |
1134 } | |
1135 | |
1136 return JVMTI_ERROR_NONE; | |
1137 } /* end GetTopThreadGroups */ | |
1138 | |
1139 | |
1140 // info_ptr - pre-checked for NULL | |
1141 jvmtiError | |
1142 JvmtiEnv::GetThreadGroupInfo(jthreadGroup group, jvmtiThreadGroupInfo* info_ptr) { | |
1143 ResourceMark rm; | |
1144 HandleMark hm; | |
1145 | |
1146 JavaThread* current_thread = JavaThread::current(); | |
1147 | |
1148 Handle group_obj (current_thread, JNIHandles::resolve_external_guard(group)); | |
1149 NULL_CHECK(group_obj(), JVMTI_ERROR_INVALID_THREAD_GROUP); | |
1150 | |
1151 typeArrayHandle name; | |
1152 Handle parent_group; | |
1153 bool is_daemon; | |
1154 ThreadPriority max_priority; | |
1155 | |
1156 { MutexLocker mu(Threads_lock); | |
1157 | |
1158 name = typeArrayHandle(current_thread, | |
1159 java_lang_ThreadGroup::name(group_obj())); | |
1160 parent_group = Handle(current_thread, java_lang_ThreadGroup::parent(group_obj())); | |
1161 is_daemon = java_lang_ThreadGroup::is_daemon(group_obj()); | |
1162 max_priority = java_lang_ThreadGroup::maxPriority(group_obj()); | |
1163 } | |
1164 | |
1165 info_ptr->is_daemon = is_daemon; | |
1166 info_ptr->max_priority = max_priority; | |
1167 info_ptr->parent = jni_reference(parent_group); | |
1168 | |
1169 if (name() != NULL) { | |
1170 const char* n = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length()); | |
1171 info_ptr->name = (char *)jvmtiMalloc(strlen(n)+1); | |
1172 NULL_CHECK(info_ptr->name, JVMTI_ERROR_OUT_OF_MEMORY); | |
1173 strcpy(info_ptr->name, n); | |
1174 } else { | |
1175 info_ptr->name = NULL; | |
1176 } | |
1177 | |
1178 return JVMTI_ERROR_NONE; | |
1179 } /* end GetThreadGroupInfo */ | |
1180 | |
1181 | |
1182 // thread_count_ptr - pre-checked for NULL | |
1183 // threads_ptr - pre-checked for NULL | |
1184 // group_count_ptr - pre-checked for NULL | |
1185 // groups_ptr - pre-checked for NULL | |
1186 jvmtiError | |
1187 JvmtiEnv::GetThreadGroupChildren(jthreadGroup group, jint* thread_count_ptr, jthread** threads_ptr, jint* group_count_ptr, jthreadGroup** groups_ptr) { | |
1188 JavaThread* current_thread = JavaThread::current(); | |
1189 oop group_obj = (oop) JNIHandles::resolve_external_guard(group); | |
1190 NULL_CHECK(group_obj, JVMTI_ERROR_INVALID_THREAD_GROUP); | |
1191 | |
1192 Handle *thread_objs = NULL; | |
1193 Handle *group_objs = NULL; | |
1194 int nthreads = 0; | |
1195 int ngroups = 0; | |
1196 int hidden_threads = 0; | |
1197 | |
1198 ResourceMark rm; | |
1199 HandleMark hm; | |
1200 | |
1201 Handle group_hdl(current_thread, group_obj); | |
1202 | |
1203 { MutexLocker mu(Threads_lock); | |
1204 | |
1205 nthreads = java_lang_ThreadGroup::nthreads(group_hdl()); | |
1206 ngroups = java_lang_ThreadGroup::ngroups(group_hdl()); | |
1207 | |
1208 if (nthreads > 0) { | |
1209 objArrayOop threads = java_lang_ThreadGroup::threads(group_hdl()); | |
1210 assert(nthreads <= threads->length(), "too many threads"); | |
1211 thread_objs = NEW_RESOURCE_ARRAY(Handle,nthreads); | |
1212 for (int i=0, j=0; i<nthreads; i++) { | |
1213 oop thread_obj = threads->obj_at(i); | |
1214 assert(thread_obj != NULL, "thread_obj is NULL"); | |
1215 JavaThread *javathread = java_lang_Thread::thread(thread_obj); | |
1216 // Filter out hidden java threads. | |
1217 if (javathread != NULL && javathread->is_hidden_from_external_view()) { | |
1218 hidden_threads++; | |
1219 continue; | |
1220 } | |
1221 thread_objs[j++] = Handle(current_thread, thread_obj); | |
1222 } | |
1223 nthreads -= hidden_threads; | |
1224 } | |
1225 if (ngroups > 0) { | |
1226 objArrayOop groups = java_lang_ThreadGroup::groups(group_hdl()); | |
1227 assert(ngroups <= groups->length(), "too many threads"); | |
1228 group_objs = NEW_RESOURCE_ARRAY(Handle,ngroups); | |
1229 for (int i=0; i<ngroups; i++) { | |
1230 oop group_obj = groups->obj_at(i); | |
1231 assert(group_obj != NULL, "group_obj != NULL"); | |
1232 group_objs[i] = Handle(current_thread, group_obj); | |
1233 } | |
1234 } | |
1235 } | |
1236 | |
1237 // have to make global handles outside of Threads_lock | |
1238 *group_count_ptr = ngroups; | |
1239 *thread_count_ptr = nthreads; | |
1240 *threads_ptr = new_jthreadArray(nthreads, thread_objs); | |
1241 *groups_ptr = new_jthreadGroupArray(ngroups, group_objs); | |
1242 if ((nthreads > 0) && (*threads_ptr == NULL)) { | |
1243 return JVMTI_ERROR_OUT_OF_MEMORY; | |
1244 } | |
1245 if ((ngroups > 0) && (*groups_ptr == NULL)) { | |
1246 return JVMTI_ERROR_OUT_OF_MEMORY; | |
1247 } | |
1248 | |
1249 return JVMTI_ERROR_NONE; | |
1250 } /* end GetThreadGroupChildren */ | |
1251 | |
1252 | |
1253 // | |
1254 // Stack Frame functions | |
1255 // | |
1256 | |
1257 // Threads_lock NOT held, java_thread not protected by lock | |
1258 // java_thread - pre-checked | |
1259 // max_frame_count - pre-checked to be greater than or equal to 0 | |
1260 // frame_buffer - pre-checked for NULL | |
1261 // count_ptr - pre-checked for NULL | |
1262 jvmtiError | |
1263 JvmtiEnv::GetStackTrace(JavaThread* java_thread, jint start_depth, jint max_frame_count, jvmtiFrameInfo* frame_buffer, jint* count_ptr) { | |
1264 jvmtiError err = JVMTI_ERROR_NONE; | |
1265 uint32_t debug_bits = 0; | |
1266 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
1267 err = get_stack_trace(java_thread, start_depth, max_frame_count, frame_buffer, count_ptr); | |
1268 } else { | |
1269 // JVMTI get stack trace at safepoint. Do not require target thread to | |
1270 // be suspended. | |
1271 VM_GetStackTrace op(this, java_thread, start_depth, max_frame_count, frame_buffer, count_ptr); | |
1272 VMThread::execute(&op); | |
1273 err = op.result(); | |
1274 } | |
1275 | |
1276 return err; | |
1277 } /* end GetStackTrace */ | |
1278 | |
1279 | |
1280 // max_frame_count - pre-checked to be greater than or equal to 0 | |
1281 // stack_info_ptr - pre-checked for NULL | |
1282 // thread_count_ptr - pre-checked for NULL | |
1283 jvmtiError | |
1284 JvmtiEnv::GetAllStackTraces(jint max_frame_count, jvmtiStackInfo** stack_info_ptr, jint* thread_count_ptr) { | |
1285 jvmtiError err = JVMTI_ERROR_NONE; | |
1286 JavaThread* calling_thread = JavaThread::current(); | |
1287 | |
1288 // JVMTI get stack traces at safepoint. | |
1289 VM_GetAllStackTraces op(this, calling_thread, max_frame_count); | |
1290 VMThread::execute(&op); | |
1291 *thread_count_ptr = op.final_thread_count(); | |
1292 *stack_info_ptr = op.stack_info(); | |
1293 err = op.result(); | |
1294 return err; | |
1295 } /* end GetAllStackTraces */ | |
1296 | |
1297 | |
1298 // thread_count - pre-checked to be greater than or equal to 0 | |
1299 // thread_list - pre-checked for NULL | |
1300 // max_frame_count - pre-checked to be greater than or equal to 0 | |
1301 // stack_info_ptr - pre-checked for NULL | |
1302 jvmtiError | |
1303 JvmtiEnv::GetThreadListStackTraces(jint thread_count, const jthread* thread_list, jint max_frame_count, jvmtiStackInfo** stack_info_ptr) { | |
1304 jvmtiError err = JVMTI_ERROR_NONE; | |
1305 // JVMTI get stack traces at safepoint. | |
1306 VM_GetThreadListStackTraces op(this, thread_count, thread_list, max_frame_count); | |
1307 VMThread::execute(&op); | |
1308 err = op.result(); | |
1309 if (err == JVMTI_ERROR_NONE) { | |
1310 *stack_info_ptr = op.stack_info(); | |
1311 } | |
1312 return err; | |
1313 } /* end GetThreadListStackTraces */ | |
1314 | |
1315 | |
1316 // Threads_lock NOT held, java_thread not protected by lock | |
1317 // java_thread - pre-checked | |
1318 // count_ptr - pre-checked for NULL | |
1319 jvmtiError | |
1320 JvmtiEnv::GetFrameCount(JavaThread* java_thread, jint* count_ptr) { | |
1321 jvmtiError err = JVMTI_ERROR_NONE; | |
1322 | |
1323 // retrieve or create JvmtiThreadState. | |
1324 JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread); | |
609
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1325 if (state == NULL) { |
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1326 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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1327 } |
0 | 1328 uint32_t debug_bits = 0; |
1329 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
1330 err = get_frame_count(state, count_ptr); | |
1331 } else { | |
1332 // get java stack frame count at safepoint. | |
1333 VM_GetFrameCount op(this, state, count_ptr); | |
1334 VMThread::execute(&op); | |
1335 err = op.result(); | |
1336 } | |
1337 return err; | |
1338 } /* end GetFrameCount */ | |
1339 | |
1340 | |
1341 // Threads_lock NOT held, java_thread not protected by lock | |
1342 // java_thread - pre-checked | |
1343 jvmtiError | |
1344 JvmtiEnv::PopFrame(JavaThread* java_thread) { | |
1345 JavaThread* current_thread = JavaThread::current(); | |
1346 HandleMark hm(current_thread); | |
1347 uint32_t debug_bits = 0; | |
1348 | |
609
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1349 // retrieve or create the state |
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1350 JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread); |
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1351 if (state == NULL) { |
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1352 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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1353 } |
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1354 |
0 | 1355 // Check if java_thread is fully suspended |
1356 if (!is_thread_fully_suspended(java_thread, true /* wait for suspend completion */, &debug_bits)) { | |
1357 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
1358 } | |
1359 // Check to see if a PopFrame was already in progress | |
1360 if (java_thread->popframe_condition() != JavaThread::popframe_inactive) { | |
1361 // Probably possible for JVMTI clients to trigger this, but the | |
1362 // JPDA backend shouldn't allow this to happen | |
1363 return JVMTI_ERROR_INTERNAL; | |
1364 } | |
1365 | |
1366 { | |
1367 // Was workaround bug | |
1368 // 4812902: popFrame hangs if the method is waiting at a synchronize | |
1369 // Catch this condition and return an error to avoid hanging. | |
1370 // Now JVMTI spec allows an implementation to bail out with an opaque frame error. | |
1371 OSThread* osThread = java_thread->osthread(); | |
1372 if (osThread->get_state() == MONITOR_WAIT) { | |
1373 return JVMTI_ERROR_OPAQUE_FRAME; | |
1374 } | |
1375 } | |
1376 | |
1377 { | |
1378 ResourceMark rm(current_thread); | |
1379 // Check if there are more than one Java frame in this thread, that the top two frames | |
1380 // are Java (not native) frames, and that there is no intervening VM frame | |
1381 int frame_count = 0; | |
1382 bool is_interpreted[2]; | |
1383 intptr_t *frame_sp[2]; | |
1384 // The 2-nd arg of constructor is needed to stop iterating at java entry frame. | |
1385 for (vframeStream vfs(java_thread, true); !vfs.at_end(); vfs.next()) { | |
1386 methodHandle mh(current_thread, vfs.method()); | |
1387 if (mh->is_native()) return(JVMTI_ERROR_OPAQUE_FRAME); | |
1388 is_interpreted[frame_count] = vfs.is_interpreted_frame(); | |
1389 frame_sp[frame_count] = vfs.frame_id(); | |
1390 if (++frame_count > 1) break; | |
1391 } | |
1392 if (frame_count < 2) { | |
1393 // We haven't found two adjacent non-native Java frames on the top. | |
1394 // There can be two situations here: | |
1395 // 1. There are no more java frames | |
1396 // 2. Two top java frames are separated by non-java native frames | |
1397 if(vframeFor(java_thread, 1) == NULL) { | |
1398 return JVMTI_ERROR_NO_MORE_FRAMES; | |
1399 } else { | |
1400 // Intervening non-java native or VM frames separate java frames. | |
1401 // Current implementation does not support this. See bug #5031735. | |
1402 // In theory it is possible to pop frames in such cases. | |
1403 return JVMTI_ERROR_OPAQUE_FRAME; | |
1404 } | |
1405 } | |
1406 | |
1407 // If any of the top 2 frames is a compiled one, need to deoptimize it | |
1408 for (int i = 0; i < 2; i++) { | |
1409 if (!is_interpreted[i]) { | |
1410 VM_DeoptimizeFrame op(java_thread, frame_sp[i]); | |
1411 VMThread::execute(&op); | |
1412 } | |
1413 } | |
1414 | |
1415 // Update the thread state to reflect that the top frame is popped | |
1416 // so that cur_stack_depth is maintained properly and all frameIDs | |
1417 // are invalidated. | |
1418 // The current frame will be popped later when the suspended thread | |
1419 // is resumed and right before returning from VM to Java. | |
1420 // (see call_VM_base() in assembler_<cpu>.cpp). | |
1421 | |
1422 // It's fine to update the thread state here because no JVMTI events | |
1423 // shall be posted for this PopFrame. | |
1424 | |
1425 state->update_for_pop_top_frame(); | |
1426 java_thread->set_popframe_condition(JavaThread::popframe_pending_bit); | |
1427 // Set pending step flag for this popframe and it is cleared when next | |
1428 // step event is posted. | |
1429 state->set_pending_step_for_popframe(); | |
1430 } | |
1431 | |
1432 return JVMTI_ERROR_NONE; | |
1433 } /* end PopFrame */ | |
1434 | |
1435 | |
1436 // Threads_lock NOT held, java_thread not protected by lock | |
1437 // java_thread - pre-checked | |
1438 // java_thread - unchecked | |
1439 // depth - pre-checked as non-negative | |
1440 // method_ptr - pre-checked for NULL | |
1441 // location_ptr - pre-checked for NULL | |
1442 jvmtiError | |
1443 JvmtiEnv::GetFrameLocation(JavaThread* java_thread, jint depth, jmethodID* method_ptr, jlocation* location_ptr) { | |
1444 jvmtiError err = JVMTI_ERROR_NONE; | |
1445 uint32_t debug_bits = 0; | |
1446 | |
1447 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
1448 err = get_frame_location(java_thread, depth, method_ptr, location_ptr); | |
1449 } else { | |
1450 // JVMTI get java stack frame location at safepoint. | |
1451 VM_GetFrameLocation op(this, java_thread, depth, method_ptr, location_ptr); | |
1452 VMThread::execute(&op); | |
1453 err = op.result(); | |
1454 } | |
1455 return err; | |
1456 } /* end GetFrameLocation */ | |
1457 | |
1458 | |
1459 // Threads_lock NOT held, java_thread not protected by lock | |
1460 // java_thread - pre-checked | |
1461 // java_thread - unchecked | |
1462 // depth - pre-checked as non-negative | |
1463 jvmtiError | |
1464 JvmtiEnv::NotifyFramePop(JavaThread* java_thread, jint depth) { | |
1465 ResourceMark rm; | |
1466 uint32_t debug_bits = 0; | |
1467 | |
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1468 JvmtiThreadState *state = JvmtiThreadState::state_for(java_thread); |
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1469 if (state == NULL) { |
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1470 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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1471 } |
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1472 |
0 | 1473 if (!JvmtiEnv::is_thread_fully_suspended(java_thread, true, &debug_bits)) { |
1474 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
1475 } | |
1476 | |
1477 if (TraceJVMTICalls) { | |
1478 JvmtiSuspendControl::print(); | |
1479 } | |
1480 | |
1481 vframe *vf = vframeFor(java_thread, depth); | |
1482 if (vf == NULL) { | |
1483 return JVMTI_ERROR_NO_MORE_FRAMES; | |
1484 } | |
1485 | |
1486 if (!vf->is_java_frame() || ((javaVFrame*) vf)->method()->is_native()) { | |
1487 return JVMTI_ERROR_OPAQUE_FRAME; | |
1488 } | |
1489 | |
1490 assert(vf->frame_pointer() != NULL, "frame pointer mustn't be NULL"); | |
1491 | |
1492 int frame_number = state->count_frames() - depth; | |
1493 state->env_thread_state(this)->set_frame_pop(frame_number); | |
1494 | |
1495 return JVMTI_ERROR_NONE; | |
1496 } /* end NotifyFramePop */ | |
1497 | |
1498 | |
1499 // | |
1500 // Force Early Return functions | |
1501 // | |
1502 | |
1503 // Threads_lock NOT held, java_thread not protected by lock | |
1504 // java_thread - pre-checked | |
1505 jvmtiError | |
1506 JvmtiEnv::ForceEarlyReturnObject(JavaThread* java_thread, jobject value) { | |
1507 jvalue val; | |
1508 val.l = value; | |
1509 return force_early_return(java_thread, val, atos); | |
1510 } /* end ForceEarlyReturnObject */ | |
1511 | |
1512 | |
1513 // Threads_lock NOT held, java_thread not protected by lock | |
1514 // java_thread - pre-checked | |
1515 jvmtiError | |
1516 JvmtiEnv::ForceEarlyReturnInt(JavaThread* java_thread, jint value) { | |
1517 jvalue val; | |
1518 val.i = value; | |
1519 return force_early_return(java_thread, val, itos); | |
1520 } /* end ForceEarlyReturnInt */ | |
1521 | |
1522 | |
1523 // Threads_lock NOT held, java_thread not protected by lock | |
1524 // java_thread - pre-checked | |
1525 jvmtiError | |
1526 JvmtiEnv::ForceEarlyReturnLong(JavaThread* java_thread, jlong value) { | |
1527 jvalue val; | |
1528 val.j = value; | |
1529 return force_early_return(java_thread, val, ltos); | |
1530 } /* end ForceEarlyReturnLong */ | |
1531 | |
1532 | |
1533 // Threads_lock NOT held, java_thread not protected by lock | |
1534 // java_thread - pre-checked | |
1535 jvmtiError | |
1536 JvmtiEnv::ForceEarlyReturnFloat(JavaThread* java_thread, jfloat value) { | |
1537 jvalue val; | |
1538 val.f = value; | |
1539 return force_early_return(java_thread, val, ftos); | |
1540 } /* end ForceEarlyReturnFloat */ | |
1541 | |
1542 | |
1543 // Threads_lock NOT held, java_thread not protected by lock | |
1544 // java_thread - pre-checked | |
1545 jvmtiError | |
1546 JvmtiEnv::ForceEarlyReturnDouble(JavaThread* java_thread, jdouble value) { | |
1547 jvalue val; | |
1548 val.d = value; | |
1549 return force_early_return(java_thread, val, dtos); | |
1550 } /* end ForceEarlyReturnDouble */ | |
1551 | |
1552 | |
1553 // Threads_lock NOT held, java_thread not protected by lock | |
1554 // java_thread - pre-checked | |
1555 jvmtiError | |
1556 JvmtiEnv::ForceEarlyReturnVoid(JavaThread* java_thread) { | |
1557 jvalue val; | |
1558 val.j = 0L; | |
1559 return force_early_return(java_thread, val, vtos); | |
1560 } /* end ForceEarlyReturnVoid */ | |
1561 | |
1562 | |
1563 // | |
1564 // Heap functions | |
1565 // | |
1566 | |
1567 // klass - NULL is a valid value, must be checked | |
1568 // initial_object - NULL is a valid value, must be checked | |
1569 // callbacks - pre-checked for NULL | |
1570 // user_data - NULL is a valid value, must be checked | |
1571 jvmtiError | |
1572 JvmtiEnv::FollowReferences(jint heap_filter, jclass klass, jobject initial_object, const jvmtiHeapCallbacks* callbacks, const void* user_data) { | |
1573 // check klass if provided | |
1574 klassOop k_oop = NULL; | |
1575 if (klass != NULL) { | |
1576 oop k_mirror = JNIHandles::resolve_external_guard(klass); | |
1577 if (k_mirror == NULL) { | |
1578 return JVMTI_ERROR_INVALID_CLASS; | |
1579 } | |
1580 if (java_lang_Class::is_primitive(k_mirror)) { | |
1581 return JVMTI_ERROR_NONE; | |
1582 } | |
1583 k_oop = java_lang_Class::as_klassOop(k_mirror); | |
1584 if (k_oop == NULL) { | |
1585 return JVMTI_ERROR_INVALID_CLASS; | |
1586 } | |
1587 } | |
1588 | |
1589 Thread *thread = Thread::current(); | |
1590 HandleMark hm(thread); | |
1591 KlassHandle kh (thread, k_oop); | |
1592 | |
1593 TraceTime t("FollowReferences", TraceJVMTIObjectTagging); | |
1594 JvmtiTagMap::tag_map_for(this)->follow_references(heap_filter, kh, initial_object, callbacks, user_data); | |
1595 return JVMTI_ERROR_NONE; | |
1596 } /* end FollowReferences */ | |
1597 | |
1598 | |
1599 // klass - NULL is a valid value, must be checked | |
1600 // callbacks - pre-checked for NULL | |
1601 // user_data - NULL is a valid value, must be checked | |
1602 jvmtiError | |
1603 JvmtiEnv::IterateThroughHeap(jint heap_filter, jclass klass, const jvmtiHeapCallbacks* callbacks, const void* user_data) { | |
1604 // check klass if provided | |
1605 klassOop k_oop = NULL; | |
1606 if (klass != NULL) { | |
1607 oop k_mirror = JNIHandles::resolve_external_guard(klass); | |
1608 if (k_mirror == NULL) { | |
1609 return JVMTI_ERROR_INVALID_CLASS; | |
1610 } | |
1611 if (java_lang_Class::is_primitive(k_mirror)) { | |
1612 return JVMTI_ERROR_NONE; | |
1613 } | |
1614 k_oop = java_lang_Class::as_klassOop(k_mirror); | |
1615 if (k_oop == NULL) { | |
1616 return JVMTI_ERROR_INVALID_CLASS; | |
1617 } | |
1618 } | |
1619 | |
1620 Thread *thread = Thread::current(); | |
1621 HandleMark hm(thread); | |
1622 KlassHandle kh (thread, k_oop); | |
1623 | |
1624 TraceTime t("IterateThroughHeap", TraceJVMTIObjectTagging); | |
1625 JvmtiTagMap::tag_map_for(this)->iterate_through_heap(heap_filter, kh, callbacks, user_data); | |
1626 return JVMTI_ERROR_NONE; | |
1627 } /* end IterateThroughHeap */ | |
1628 | |
1629 | |
1630 // tag_ptr - pre-checked for NULL | |
1631 jvmtiError | |
1632 JvmtiEnv::GetTag(jobject object, jlong* tag_ptr) { | |
1633 oop o = JNIHandles::resolve_external_guard(object); | |
1634 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
1635 *tag_ptr = JvmtiTagMap::tag_map_for(this)->get_tag(object); | |
1636 return JVMTI_ERROR_NONE; | |
1637 } /* end GetTag */ | |
1638 | |
1639 | |
1640 jvmtiError | |
1641 JvmtiEnv::SetTag(jobject object, jlong tag) { | |
1642 oop o = JNIHandles::resolve_external_guard(object); | |
1643 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
1644 JvmtiTagMap::tag_map_for(this)->set_tag(object, tag); | |
1645 return JVMTI_ERROR_NONE; | |
1646 } /* end SetTag */ | |
1647 | |
1648 | |
1649 // tag_count - pre-checked to be greater than or equal to 0 | |
1650 // tags - pre-checked for NULL | |
1651 // count_ptr - pre-checked for NULL | |
1652 // object_result_ptr - NULL is a valid value, must be checked | |
1653 // tag_result_ptr - NULL is a valid value, must be checked | |
1654 jvmtiError | |
1655 JvmtiEnv::GetObjectsWithTags(jint tag_count, const jlong* tags, jint* count_ptr, jobject** object_result_ptr, jlong** tag_result_ptr) { | |
1656 TraceTime t("GetObjectsWithTags", TraceJVMTIObjectTagging); | |
1657 return JvmtiTagMap::tag_map_for(this)->get_objects_with_tags((jlong*)tags, tag_count, count_ptr, object_result_ptr, tag_result_ptr); | |
1658 } /* end GetObjectsWithTags */ | |
1659 | |
1660 | |
1661 jvmtiError | |
1662 JvmtiEnv::ForceGarbageCollection() { | |
1663 Universe::heap()->collect(GCCause::_jvmti_force_gc); | |
1664 return JVMTI_ERROR_NONE; | |
1665 } /* end ForceGarbageCollection */ | |
1666 | |
1667 | |
1668 // | |
1669 // Heap (1.0) functions | |
1670 // | |
1671 | |
1672 // object_reference_callback - pre-checked for NULL | |
1673 // user_data - NULL is a valid value, must be checked | |
1674 jvmtiError | |
1675 JvmtiEnv::IterateOverObjectsReachableFromObject(jobject object, jvmtiObjectReferenceCallback object_reference_callback, const void* user_data) { | |
1676 oop o = JNIHandles::resolve_external_guard(object); | |
1677 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
1678 JvmtiTagMap::tag_map_for(this)->iterate_over_objects_reachable_from_object(object, object_reference_callback, user_data); | |
1679 return JVMTI_ERROR_NONE; | |
1680 } /* end IterateOverObjectsReachableFromObject */ | |
1681 | |
1682 | |
1683 // heap_root_callback - NULL is a valid value, must be checked | |
1684 // stack_ref_callback - NULL is a valid value, must be checked | |
1685 // object_ref_callback - NULL is a valid value, must be checked | |
1686 // user_data - NULL is a valid value, must be checked | |
1687 jvmtiError | |
1688 JvmtiEnv::IterateOverReachableObjects(jvmtiHeapRootCallback heap_root_callback, jvmtiStackReferenceCallback stack_ref_callback, jvmtiObjectReferenceCallback object_ref_callback, const void* user_data) { | |
1689 TraceTime t("IterateOverReachableObjects", TraceJVMTIObjectTagging); | |
1690 JvmtiTagMap::tag_map_for(this)->iterate_over_reachable_objects(heap_root_callback, stack_ref_callback, object_ref_callback, user_data); | |
1691 return JVMTI_ERROR_NONE; | |
1692 } /* end IterateOverReachableObjects */ | |
1693 | |
1694 | |
1695 // heap_object_callback - pre-checked for NULL | |
1696 // user_data - NULL is a valid value, must be checked | |
1697 jvmtiError | |
1698 JvmtiEnv::IterateOverHeap(jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) { | |
1699 TraceTime t("IterateOverHeap", TraceJVMTIObjectTagging); | |
1700 Thread *thread = Thread::current(); | |
1701 HandleMark hm(thread); | |
1702 JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, KlassHandle(), heap_object_callback, user_data); | |
1703 return JVMTI_ERROR_NONE; | |
1704 } /* end IterateOverHeap */ | |
1705 | |
1706 | |
1707 // k_mirror - may be primitive, this must be checked | |
1708 // heap_object_callback - pre-checked for NULL | |
1709 // user_data - NULL is a valid value, must be checked | |
1710 jvmtiError | |
1711 JvmtiEnv::IterateOverInstancesOfClass(oop k_mirror, jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) { | |
1712 if (java_lang_Class::is_primitive(k_mirror)) { | |
1713 // DO PRIMITIVE CLASS PROCESSING | |
1714 return JVMTI_ERROR_NONE; | |
1715 } | |
1716 klassOop k_oop = java_lang_Class::as_klassOop(k_mirror); | |
1717 if (k_oop == NULL) { | |
1718 return JVMTI_ERROR_INVALID_CLASS; | |
1719 } | |
1720 Thread *thread = Thread::current(); | |
1721 HandleMark hm(thread); | |
1722 KlassHandle klass (thread, k_oop); | |
1723 TraceTime t("IterateOverInstancesOfClass", TraceJVMTIObjectTagging); | |
1724 JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, klass, heap_object_callback, user_data); | |
1725 return JVMTI_ERROR_NONE; | |
1726 } /* end IterateOverInstancesOfClass */ | |
1727 | |
1728 | |
1729 // | |
1730 // Local Variable functions | |
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::GetLocalObject(JavaThread* java_thread, jint depth, jint slot, jobject* value_ptr) { | |
1740 JavaThread* current_thread = JavaThread::current(); | |
1741 // rm object is created to clean up the javaVFrame created in | |
1742 // doit_prologue(), but after doit() is finished with it. | |
1743 ResourceMark rm(current_thread); | |
1744 | |
1745 VM_GetOrSetLocal op(java_thread, current_thread, depth, slot); | |
1746 VMThread::execute(&op); | |
1747 jvmtiError err = op.result(); | |
1748 if (err != JVMTI_ERROR_NONE) { | |
1749 return err; | |
1750 } else { | |
1751 *value_ptr = op.value().l; | |
1752 return JVMTI_ERROR_NONE; | |
1753 } | |
1754 } /* end GetLocalObject */ | |
1755 | |
1756 | |
1757 // Threads_lock NOT held, java_thread not protected by lock | |
1758 // java_thread - pre-checked | |
1759 // java_thread - unchecked | |
1760 // depth - pre-checked as non-negative | |
1761 // value_ptr - pre-checked for NULL | |
1762 jvmtiError | |
1763 JvmtiEnv::GetLocalInt(JavaThread* java_thread, jint depth, jint slot, jint* value_ptr) { | |
1764 // rm object is created to clean up the javaVFrame created in | |
1765 // doit_prologue(), but after doit() is finished with it. | |
1766 ResourceMark rm; | |
1767 | |
1768 VM_GetOrSetLocal op(java_thread, depth, slot, T_INT); | |
1769 VMThread::execute(&op); | |
1770 *value_ptr = op.value().i; | |
1771 return op.result(); | |
1772 } /* end GetLocalInt */ | |
1773 | |
1774 | |
1775 // Threads_lock NOT held, java_thread not protected by lock | |
1776 // java_thread - pre-checked | |
1777 // java_thread - unchecked | |
1778 // depth - pre-checked as non-negative | |
1779 // value_ptr - pre-checked for NULL | |
1780 jvmtiError | |
1781 JvmtiEnv::GetLocalLong(JavaThread* java_thread, jint depth, jint slot, jlong* value_ptr) { | |
1782 // rm object is created to clean up the javaVFrame created in | |
1783 // doit_prologue(), but after doit() is finished with it. | |
1784 ResourceMark rm; | |
1785 | |
1786 VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG); | |
1787 VMThread::execute(&op); | |
1788 *value_ptr = op.value().j; | |
1789 return op.result(); | |
1790 } /* end GetLocalLong */ | |
1791 | |
1792 | |
1793 // Threads_lock NOT held, java_thread not protected by lock | |
1794 // java_thread - pre-checked | |
1795 // java_thread - unchecked | |
1796 // depth - pre-checked as non-negative | |
1797 // value_ptr - pre-checked for NULL | |
1798 jvmtiError | |
1799 JvmtiEnv::GetLocalFloat(JavaThread* java_thread, jint depth, jint slot, jfloat* value_ptr) { | |
1800 // rm object is created to clean up the javaVFrame created in | |
1801 // doit_prologue(), but after doit() is finished with it. | |
1802 ResourceMark rm; | |
1803 | |
1804 VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT); | |
1805 VMThread::execute(&op); | |
1806 *value_ptr = op.value().f; | |
1807 return op.result(); | |
1808 } /* end GetLocalFloat */ | |
1809 | |
1810 | |
1811 // Threads_lock NOT held, java_thread not protected by lock | |
1812 // java_thread - pre-checked | |
1813 // java_thread - unchecked | |
1814 // depth - pre-checked as non-negative | |
1815 // value_ptr - pre-checked for NULL | |
1816 jvmtiError | |
1817 JvmtiEnv::GetLocalDouble(JavaThread* java_thread, jint depth, jint slot, jdouble* value_ptr) { | |
1818 // rm object is created to clean up the javaVFrame created in | |
1819 // doit_prologue(), but after doit() is finished with it. | |
1820 ResourceMark rm; | |
1821 | |
1822 VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE); | |
1823 VMThread::execute(&op); | |
1824 *value_ptr = op.value().d; | |
1825 return op.result(); | |
1826 } /* end GetLocalDouble */ | |
1827 | |
1828 | |
1829 // Threads_lock NOT held, java_thread not protected by lock | |
1830 // java_thread - pre-checked | |
1831 // java_thread - unchecked | |
1832 // depth - pre-checked as non-negative | |
1833 jvmtiError | |
1834 JvmtiEnv::SetLocalObject(JavaThread* java_thread, jint depth, jint slot, jobject value) { | |
1835 // rm object is created to clean up the javaVFrame created in | |
1836 // doit_prologue(), but after doit() is finished with it. | |
1837 ResourceMark rm; | |
1838 jvalue val; | |
1839 val.l = value; | |
1840 VM_GetOrSetLocal op(java_thread, depth, slot, T_OBJECT, val); | |
1841 VMThread::execute(&op); | |
1842 return op.result(); | |
1843 } /* end SetLocalObject */ | |
1844 | |
1845 | |
1846 // Threads_lock NOT held, java_thread not protected by lock | |
1847 // java_thread - pre-checked | |
1848 // java_thread - unchecked | |
1849 // depth - pre-checked as non-negative | |
1850 jvmtiError | |
1851 JvmtiEnv::SetLocalInt(JavaThread* java_thread, jint depth, jint slot, jint value) { | |
1852 // rm object is created to clean up the javaVFrame created in | |
1853 // doit_prologue(), but after doit() is finished with it. | |
1854 ResourceMark rm; | |
1855 jvalue val; | |
1856 val.i = value; | |
1857 VM_GetOrSetLocal op(java_thread, depth, slot, T_INT, val); | |
1858 VMThread::execute(&op); | |
1859 return op.result(); | |
1860 } /* end SetLocalInt */ | |
1861 | |
1862 | |
1863 // Threads_lock NOT held, java_thread not protected by lock | |
1864 // java_thread - pre-checked | |
1865 // java_thread - unchecked | |
1866 // depth - pre-checked as non-negative | |
1867 jvmtiError | |
1868 JvmtiEnv::SetLocalLong(JavaThread* java_thread, jint depth, jint slot, jlong value) { | |
1869 // rm object is created to clean up the javaVFrame created in | |
1870 // doit_prologue(), but after doit() is finished with it. | |
1871 ResourceMark rm; | |
1872 jvalue val; | |
1873 val.j = value; | |
1874 VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG, val); | |
1875 VMThread::execute(&op); | |
1876 return op.result(); | |
1877 } /* end SetLocalLong */ | |
1878 | |
1879 | |
1880 // Threads_lock NOT held, java_thread not protected by lock | |
1881 // java_thread - pre-checked | |
1882 // java_thread - unchecked | |
1883 // depth - pre-checked as non-negative | |
1884 jvmtiError | |
1885 JvmtiEnv::SetLocalFloat(JavaThread* java_thread, jint depth, jint slot, jfloat value) { | |
1886 // rm object is created to clean up the javaVFrame created in | |
1887 // doit_prologue(), but after doit() is finished with it. | |
1888 ResourceMark rm; | |
1889 jvalue val; | |
1890 val.f = value; | |
1891 VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT, val); | |
1892 VMThread::execute(&op); | |
1893 return op.result(); | |
1894 } /* end SetLocalFloat */ | |
1895 | |
1896 | |
1897 // Threads_lock NOT held, java_thread not protected by lock | |
1898 // java_thread - pre-checked | |
1899 // java_thread - unchecked | |
1900 // depth - pre-checked as non-negative | |
1901 jvmtiError | |
1902 JvmtiEnv::SetLocalDouble(JavaThread* java_thread, jint depth, jint slot, jdouble value) { | |
1903 // rm object is created to clean up the javaVFrame created in | |
1904 // doit_prologue(), but after doit() is finished with it. | |
1905 ResourceMark rm; | |
1906 jvalue val; | |
1907 val.d = value; | |
1908 VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE, val); | |
1909 VMThread::execute(&op); | |
1910 return op.result(); | |
1911 } /* end SetLocalDouble */ | |
1912 | |
1913 | |
1914 // | |
1915 // Breakpoint functions | |
1916 // | |
1917 | |
1918 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
1919 jvmtiError | |
1920 JvmtiEnv::SetBreakpoint(methodOop method_oop, jlocation location) { | |
1921 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
1922 if (location < 0) { // simple invalid location check first | |
1923 return JVMTI_ERROR_INVALID_LOCATION; | |
1924 } | |
1925 // verify that the breakpoint is not past the end of the method | |
1926 if (location >= (jlocation) method_oop->code_size()) { | |
1927 return JVMTI_ERROR_INVALID_LOCATION; | |
1928 } | |
1929 | |
1930 ResourceMark rm; | |
1931 JvmtiBreakpoint bp(method_oop, location); | |
1932 JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints(); | |
1933 if (jvmti_breakpoints.set(bp) == JVMTI_ERROR_DUPLICATE) | |
1934 return JVMTI_ERROR_DUPLICATE; | |
1935 | |
1936 if (TraceJVMTICalls) { | |
1937 jvmti_breakpoints.print(); | |
1938 } | |
1939 | |
1940 return JVMTI_ERROR_NONE; | |
1941 } /* end SetBreakpoint */ | |
1942 | |
1943 | |
1944 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
1945 jvmtiError | |
1946 JvmtiEnv::ClearBreakpoint(methodOop method_oop, jlocation location) { | |
1947 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
1948 | |
1949 if (location < 0) { // simple invalid location check first | |
1950 return JVMTI_ERROR_INVALID_LOCATION; | |
1951 } | |
1952 | |
1953 // verify that the breakpoint is not past the end of the method | |
1954 if (location >= (jlocation) method_oop->code_size()) { | |
1955 return JVMTI_ERROR_INVALID_LOCATION; | |
1956 } | |
1957 | |
1958 JvmtiBreakpoint bp(method_oop, location); | |
1959 | |
1960 JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints(); | |
1961 if (jvmti_breakpoints.clear(bp) == JVMTI_ERROR_NOT_FOUND) | |
1962 return JVMTI_ERROR_NOT_FOUND; | |
1963 | |
1964 if (TraceJVMTICalls) { | |
1965 jvmti_breakpoints.print(); | |
1966 } | |
1967 | |
1968 return JVMTI_ERROR_NONE; | |
1969 } /* end ClearBreakpoint */ | |
1970 | |
1971 | |
1972 // | |
1973 // Watched Field functions | |
1974 // | |
1975 | |
1976 jvmtiError | |
1977 JvmtiEnv::SetFieldAccessWatch(fieldDescriptor* fdesc_ptr) { | |
1978 // make sure we haven't set this watch before | |
1979 if (fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_DUPLICATE; | |
1980 fdesc_ptr->set_is_field_access_watched(true); | |
1981 update_klass_field_access_flag(fdesc_ptr); | |
1982 | |
1983 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, true); | |
1984 | |
1985 return JVMTI_ERROR_NONE; | |
1986 } /* end SetFieldAccessWatch */ | |
1987 | |
1988 | |
1989 jvmtiError | |
1990 JvmtiEnv::ClearFieldAccessWatch(fieldDescriptor* fdesc_ptr) { | |
1991 // make sure we have a watch to clear | |
1992 if (!fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_NOT_FOUND; | |
1993 fdesc_ptr->set_is_field_access_watched(false); | |
1994 update_klass_field_access_flag(fdesc_ptr); | |
1995 | |
1996 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, false); | |
1997 | |
1998 return JVMTI_ERROR_NONE; | |
1999 } /* end ClearFieldAccessWatch */ | |
2000 | |
2001 | |
2002 jvmtiError | |
2003 JvmtiEnv::SetFieldModificationWatch(fieldDescriptor* fdesc_ptr) { | |
2004 // make sure we haven't set this watch before | |
2005 if (fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_DUPLICATE; | |
2006 fdesc_ptr->set_is_field_modification_watched(true); | |
2007 update_klass_field_access_flag(fdesc_ptr); | |
2008 | |
2009 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, true); | |
2010 | |
2011 return JVMTI_ERROR_NONE; | |
2012 } /* end SetFieldModificationWatch */ | |
2013 | |
2014 | |
2015 jvmtiError | |
2016 JvmtiEnv::ClearFieldModificationWatch(fieldDescriptor* fdesc_ptr) { | |
2017 // make sure we have a watch to clear | |
2018 if (!fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_NOT_FOUND; | |
2019 fdesc_ptr->set_is_field_modification_watched(false); | |
2020 update_klass_field_access_flag(fdesc_ptr); | |
2021 | |
2022 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, false); | |
2023 | |
2024 return JVMTI_ERROR_NONE; | |
2025 } /* end ClearFieldModificationWatch */ | |
2026 | |
2027 // | |
2028 // Class functions | |
2029 // | |
2030 | |
2031 | |
2032 // k_mirror - may be primitive, this must be checked | |
2033 // signature_ptr - NULL is a valid value, must be checked | |
2034 // generic_ptr - NULL is a valid value, must be checked | |
2035 jvmtiError | |
2036 JvmtiEnv::GetClassSignature(oop k_mirror, char** signature_ptr, char** generic_ptr) { | |
2037 ResourceMark rm; | |
2038 bool isPrimitive = java_lang_Class::is_primitive(k_mirror); | |
2039 klassOop k = NULL; | |
2040 if (!isPrimitive) { | |
2041 k = java_lang_Class::as_klassOop(k_mirror); | |
2042 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
2043 } | |
2044 if (signature_ptr != NULL) { | |
2045 char* result = NULL; | |
2046 if (isPrimitive) { | |
2047 char tchar = type2char(java_lang_Class::primitive_type(k_mirror)); | |
2048 result = (char*) jvmtiMalloc(2); | |
2049 result[0] = tchar; | |
2050 result[1] = '\0'; | |
2051 } else { | |
2052 const char* class_sig = Klass::cast(k)->signature_name(); | |
2053 result = (char *) jvmtiMalloc(strlen(class_sig)+1); | |
2054 strcpy(result, class_sig); | |
2055 } | |
2056 *signature_ptr = result; | |
2057 } | |
2058 if (generic_ptr != NULL) { | |
2059 *generic_ptr = NULL; | |
2060 if (!isPrimitive && Klass::cast(k)->oop_is_instance()) { | |
2061 symbolOop soo = instanceKlass::cast(k)->generic_signature(); | |
2062 if (soo != NULL) { | |
2063 const char *gen_sig = soo->as_C_string(); | |
2064 if (gen_sig != NULL) { | |
2065 char* gen_result; | |
2066 jvmtiError err = allocate(strlen(gen_sig) + 1, | |
2067 (unsigned char **)&gen_result); | |
2068 if (err != JVMTI_ERROR_NONE) { | |
2069 return err; | |
2070 } | |
2071 strcpy(gen_result, gen_sig); | |
2072 *generic_ptr = gen_result; | |
2073 } | |
2074 } | |
2075 } | |
2076 } | |
2077 return JVMTI_ERROR_NONE; | |
2078 } /* end GetClassSignature */ | |
2079 | |
2080 | |
2081 // k_mirror - may be primitive, this must be checked | |
2082 // status_ptr - pre-checked for NULL | |
2083 jvmtiError | |
2084 JvmtiEnv::GetClassStatus(oop k_mirror, jint* status_ptr) { | |
2085 jint result = 0; | |
2086 if (java_lang_Class::is_primitive(k_mirror)) { | |
2087 result |= JVMTI_CLASS_STATUS_PRIMITIVE; | |
2088 } else { | |
2089 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2090 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
2091 result = Klass::cast(k)->jvmti_class_status(); | |
2092 } | |
2093 *status_ptr = result; | |
2094 | |
2095 return JVMTI_ERROR_NONE; | |
2096 } /* end GetClassStatus */ | |
2097 | |
2098 | |
2099 // k_mirror - may be primitive, this must be checked | |
2100 // source_name_ptr - pre-checked for NULL | |
2101 jvmtiError | |
2102 JvmtiEnv::GetSourceFileName(oop k_mirror, char** source_name_ptr) { | |
2103 if (java_lang_Class::is_primitive(k_mirror)) { | |
2104 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2105 } | |
2106 klassOop k_klass = java_lang_Class::as_klassOop(k_mirror); | |
2107 NULL_CHECK(k_klass, JVMTI_ERROR_INVALID_CLASS); | |
2108 | |
2109 if (!Klass::cast(k_klass)->oop_is_instance()) { | |
2110 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2111 } | |
2112 | |
2113 symbolOop sfnOop = instanceKlass::cast(k_klass)->source_file_name(); | |
2114 NULL_CHECK(sfnOop, JVMTI_ERROR_ABSENT_INFORMATION); | |
2115 { | |
2116 JavaThread* current_thread = JavaThread::current(); | |
2117 ResourceMark rm(current_thread); | |
2118 const char* sfncp = (const char*) sfnOop->as_C_string(); | |
2119 *source_name_ptr = (char *) jvmtiMalloc(strlen(sfncp)+1); | |
2120 strcpy(*source_name_ptr, sfncp); | |
2121 } | |
2122 | |
2123 return JVMTI_ERROR_NONE; | |
2124 } /* end GetSourceFileName */ | |
2125 | |
2126 | |
2127 // k_mirror - may be primitive, this must be checked | |
2128 // modifiers_ptr - pre-checked for NULL | |
2129 jvmtiError | |
2130 JvmtiEnv::GetClassModifiers(oop k_mirror, jint* modifiers_ptr) { | |
2131 JavaThread* current_thread = JavaThread::current(); | |
2132 jint result = 0; | |
2133 if (!java_lang_Class::is_primitive(k_mirror)) { | |
2134 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2135 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
2136 assert((Klass::cast(k)->oop_is_instance() || Klass::cast(k)->oop_is_array()), "should be an instance or an array klass"); | |
2137 result = Klass::cast(k)->compute_modifier_flags(current_thread); | |
2138 JavaThread* THREAD = current_thread; // pass to macros | |
2139 if (HAS_PENDING_EXCEPTION) { | |
2140 CLEAR_PENDING_EXCEPTION; | |
2141 return JVMTI_ERROR_INTERNAL; | |
2142 }; | |
2143 | |
2144 // Reset the deleted ACC_SUPER bit ( deleted in compute_modifier_flags()). | |
2145 if(Klass::cast(k)->is_super()) { | |
2146 result |= JVM_ACC_SUPER; | |
2147 } | |
2148 } else { | |
2149 result = (JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC); | |
2150 } | |
2151 *modifiers_ptr = result; | |
2152 | |
2153 return JVMTI_ERROR_NONE; | |
2154 } /* end GetClassModifiers */ | |
2155 | |
2156 | |
2157 // k_mirror - may be primitive, this must be checked | |
2158 // method_count_ptr - pre-checked for NULL | |
2159 // methods_ptr - pre-checked for NULL | |
2160 jvmtiError | |
2161 JvmtiEnv::GetClassMethods(oop k_mirror, jint* method_count_ptr, jmethodID** methods_ptr) { | |
2162 JavaThread* current_thread = JavaThread::current(); | |
2163 HandleMark hm(current_thread); | |
2164 | |
2165 if (java_lang_Class::is_primitive(k_mirror)) { | |
2166 *method_count_ptr = 0; | |
2167 *methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID)); | |
2168 return JVMTI_ERROR_NONE; | |
2169 } | |
2170 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2171 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
2172 | |
2173 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
2174 if (!(Klass::cast(k)->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) { | |
2175 return JVMTI_ERROR_CLASS_NOT_PREPARED; | |
2176 } | |
2177 | |
2178 if (!Klass::cast(k)->oop_is_instance()) { | |
2179 *method_count_ptr = 0; | |
2180 *methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID)); | |
2181 return JVMTI_ERROR_NONE; | |
2182 } | |
2183 instanceKlassHandle instanceK_h(current_thread, k); | |
2184 // Allocate the result and fill it in | |
2185 int result_length = instanceK_h->methods()->length(); | |
2186 jmethodID* result_list = (jmethodID*)jvmtiMalloc(result_length * sizeof(jmethodID)); | |
2187 int index; | |
2188 if (JvmtiExport::can_maintain_original_method_order()) { | |
2189 // Use the original method ordering indices stored in the class, so we can emit | |
2190 // jmethodIDs in the order they appeared in the class file | |
2191 for (index = 0; index < result_length; index++) { | |
2192 methodOop m = methodOop(instanceK_h->methods()->obj_at(index)); | |
2193 int original_index = instanceK_h->method_ordering()->int_at(index); | |
2194 assert(original_index >= 0 && original_index < result_length, "invalid original method index"); | |
2195 jmethodID id = m->jmethod_id(); | |
2196 result_list[original_index] = id; | |
2197 } | |
2198 } else { | |
2199 // otherwise just copy in any order | |
2200 for (index = 0; index < result_length; index++) { | |
2201 methodOop m = methodOop(instanceK_h->methods()->obj_at(index)); | |
2202 jmethodID id = m->jmethod_id(); | |
2203 result_list[index] = id; | |
2204 } | |
2205 } | |
2206 // Fill in return value. | |
2207 *method_count_ptr = result_length; | |
2208 *methods_ptr = result_list; | |
2209 | |
2210 return JVMTI_ERROR_NONE; | |
2211 } /* end GetClassMethods */ | |
2212 | |
2213 | |
2214 // k_mirror - may be primitive, this must be checked | |
2215 // field_count_ptr - pre-checked for NULL | |
2216 // fields_ptr - pre-checked for NULL | |
2217 jvmtiError | |
2218 JvmtiEnv::GetClassFields(oop k_mirror, jint* field_count_ptr, jfieldID** fields_ptr) { | |
2219 if (java_lang_Class::is_primitive(k_mirror)) { | |
2220 *field_count_ptr = 0; | |
2221 *fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID)); | |
2222 return JVMTI_ERROR_NONE; | |
2223 } | |
2224 JavaThread* current_thread = JavaThread::current(); | |
2225 HandleMark hm(current_thread); | |
2226 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2227 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
2228 | |
2229 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
2230 if (!(Klass::cast(k)->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) { | |
2231 return JVMTI_ERROR_CLASS_NOT_PREPARED; | |
2232 } | |
2233 | |
2234 if (!Klass::cast(k)->oop_is_instance()) { | |
2235 *field_count_ptr = 0; | |
2236 *fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID)); | |
2237 return JVMTI_ERROR_NONE; | |
2238 } | |
2239 | |
2240 | |
2241 instanceKlassHandle instanceK_h(current_thread, k); | |
2242 | |
2243 int result_count = 0; | |
2244 // First, count the fields. | |
2245 FilteredFieldStream flds(instanceK_h, true, true); | |
2246 result_count = flds.field_count(); | |
2247 | |
2248 // Allocate the result and fill it in | |
2249 jfieldID* result_list = (jfieldID*) jvmtiMalloc(result_count * sizeof(jfieldID)); | |
2250 // The JVMTI spec requires fields in the order they occur in the class file, | |
2251 // this is the reverse order of what FieldStream hands out. | |
2252 int id_index = (result_count - 1); | |
2253 | |
2254 for (FilteredFieldStream src_st(instanceK_h, true, true); !src_st.eos(); src_st.next()) { | |
2255 result_list[id_index--] = jfieldIDWorkaround::to_jfieldID( | |
2256 instanceK_h, src_st.offset(), | |
2257 src_st.access_flags().is_static()); | |
2258 } | |
2259 assert(id_index == -1, "just checking"); | |
2260 // Fill in the results | |
2261 *field_count_ptr = result_count; | |
2262 *fields_ptr = result_list; | |
2263 | |
2264 return JVMTI_ERROR_NONE; | |
2265 } /* end GetClassFields */ | |
2266 | |
2267 | |
2268 // k_mirror - may be primitive, this must be checked | |
2269 // interface_count_ptr - pre-checked for NULL | |
2270 // interfaces_ptr - pre-checked for NULL | |
2271 jvmtiError | |
2272 JvmtiEnv::GetImplementedInterfaces(oop k_mirror, jint* interface_count_ptr, jclass** interfaces_ptr) { | |
2273 { | |
2274 if (java_lang_Class::is_primitive(k_mirror)) { | |
2275 *interface_count_ptr = 0; | |
2276 *interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass)); | |
2277 return JVMTI_ERROR_NONE; | |
2278 } | |
2279 JavaThread* current_thread = JavaThread::current(); | |
2280 HandleMark hm(current_thread); | |
2281 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2282 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
2283 | |
2284 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
2285 if (!(Klass::cast(k)->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) | |
2286 return JVMTI_ERROR_CLASS_NOT_PREPARED; | |
2287 | |
2288 if (!Klass::cast(k)->oop_is_instance()) { | |
2289 *interface_count_ptr = 0; | |
2290 *interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass)); | |
2291 return JVMTI_ERROR_NONE; | |
2292 } | |
2293 | |
2294 objArrayHandle interface_list(current_thread, instanceKlass::cast(k)->local_interfaces()); | |
2295 const int result_length = (interface_list.is_null() ? 0 : interface_list->length()); | |
2296 jclass* result_list = (jclass*) jvmtiMalloc(result_length * sizeof(jclass)); | |
2297 for (int i_index = 0; i_index < result_length; i_index += 1) { | |
2298 oop oop_at = interface_list->obj_at(i_index); | |
2299 assert(oop_at->is_klass(), "interfaces must be klassOops"); | |
2300 klassOop klassOop_at = klassOop(oop_at); // ???: is there a better way? | |
2301 assert(Klass::cast(klassOop_at)->is_interface(), "interfaces must be interfaces"); | |
2302 oop mirror_at = Klass::cast(klassOop_at)->java_mirror(); | |
2303 Handle handle_at = Handle(current_thread, mirror_at); | |
2304 result_list[i_index] = (jclass) jni_reference(handle_at); | |
2305 } | |
2306 *interface_count_ptr = result_length; | |
2307 *interfaces_ptr = result_list; | |
2308 } | |
2309 | |
2310 return JVMTI_ERROR_NONE; | |
2311 } /* end GetImplementedInterfaces */ | |
2312 | |
2313 | |
2314 // k_mirror - may be primitive, this must be checked | |
2315 // minor_version_ptr - pre-checked for NULL | |
2316 // major_version_ptr - pre-checked for NULL | |
2317 jvmtiError | |
2318 JvmtiEnv::GetClassVersionNumbers(oop k_mirror, jint* minor_version_ptr, jint* major_version_ptr) { | |
2319 if (java_lang_Class::is_primitive(k_mirror)) { | |
2320 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2321 } | |
2322 klassOop k_oop = java_lang_Class::as_klassOop(k_mirror); | |
2323 Thread *thread = Thread::current(); | |
2324 HandleMark hm(thread); | |
2325 KlassHandle klass(thread, k_oop); | |
2326 | |
2327 jint status = klass->jvmti_class_status(); | |
2328 if (status & (JVMTI_CLASS_STATUS_ERROR)) { | |
2329 return JVMTI_ERROR_INVALID_CLASS; | |
2330 } | |
2331 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { | |
2332 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2333 } | |
2334 | |
2335 instanceKlassHandle ik(thread, k_oop); | |
2336 *minor_version_ptr = ik->minor_version(); | |
2337 *major_version_ptr = ik->major_version(); | |
2338 | |
2339 return JVMTI_ERROR_NONE; | |
2340 } /* end GetClassVersionNumbers */ | |
2341 | |
2342 | |
2343 // k_mirror - may be primitive, this must be checked | |
2344 // constant_pool_count_ptr - pre-checked for NULL | |
2345 // constant_pool_byte_count_ptr - pre-checked for NULL | |
2346 // constant_pool_bytes_ptr - pre-checked for NULL | |
2347 jvmtiError | |
2348 JvmtiEnv::GetConstantPool(oop k_mirror, jint* constant_pool_count_ptr, jint* constant_pool_byte_count_ptr, unsigned char** constant_pool_bytes_ptr) { | |
2349 if (java_lang_Class::is_primitive(k_mirror)) { | |
2350 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2351 } | |
2352 | |
2353 klassOop k_oop = java_lang_Class::as_klassOop(k_mirror); | |
2354 Thread *thread = Thread::current(); | |
2355 HandleMark hm(thread); | |
2356 ResourceMark rm(thread); | |
2357 KlassHandle klass(thread, k_oop); | |
2358 | |
2359 jint status = klass->jvmti_class_status(); | |
2360 if (status & (JVMTI_CLASS_STATUS_ERROR)) { | |
2361 return JVMTI_ERROR_INVALID_CLASS; | |
2362 } | |
2363 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { | |
2364 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2365 } | |
2366 | |
2367 instanceKlassHandle ikh(thread, k_oop); | |
2368 constantPoolHandle constants(thread, ikh->constants()); | |
2369 ObjectLocker ol(constants, thread); // lock constant pool while we query it | |
2370 | |
2371 JvmtiConstantPoolReconstituter reconstituter(ikh); | |
2372 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
2373 return reconstituter.get_error(); | |
2374 } | |
2375 | |
2376 unsigned char *cpool_bytes; | |
2377 int cpool_size = reconstituter.cpool_size(); | |
2378 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
2379 return reconstituter.get_error(); | |
2380 } | |
2381 jvmtiError res = allocate(cpool_size, &cpool_bytes); | |
2382 if (res != JVMTI_ERROR_NONE) { | |
2383 return res; | |
2384 } | |
2385 reconstituter.copy_cpool_bytes(cpool_bytes); | |
2386 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
2387 return reconstituter.get_error(); | |
2388 } | |
2389 | |
2390 *constant_pool_count_ptr = constants->length(); | |
2391 *constant_pool_byte_count_ptr = cpool_size; | |
2392 *constant_pool_bytes_ptr = cpool_bytes; | |
2393 | |
2394 return JVMTI_ERROR_NONE; | |
2395 } /* end GetConstantPool */ | |
2396 | |
2397 | |
2398 // k_mirror - may be primitive, this must be checked | |
2399 // is_interface_ptr - pre-checked for NULL | |
2400 jvmtiError | |
2401 JvmtiEnv::IsInterface(oop k_mirror, jboolean* is_interface_ptr) { | |
2402 { | |
2403 bool result = false; | |
2404 if (!java_lang_Class::is_primitive(k_mirror)) { | |
2405 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2406 if (k != NULL && Klass::cast(k)->is_interface()) { | |
2407 result = true; | |
2408 } | |
2409 } | |
2410 *is_interface_ptr = result; | |
2411 } | |
2412 | |
2413 return JVMTI_ERROR_NONE; | |
2414 } /* end IsInterface */ | |
2415 | |
2416 | |
2417 // k_mirror - may be primitive, this must be checked | |
2418 // is_array_class_ptr - pre-checked for NULL | |
2419 jvmtiError | |
2420 JvmtiEnv::IsArrayClass(oop k_mirror, jboolean* is_array_class_ptr) { | |
2421 { | |
2422 bool result = false; | |
2423 if (!java_lang_Class::is_primitive(k_mirror)) { | |
2424 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2425 if (k != NULL && Klass::cast(k)->oop_is_array()) { | |
2426 result = true; | |
2427 } | |
2428 } | |
2429 *is_array_class_ptr = result; | |
2430 } | |
2431 | |
2432 return JVMTI_ERROR_NONE; | |
2433 } /* end IsArrayClass */ | |
2434 | |
2435 | |
2436 // k_mirror - may be primitive, this must be checked | |
2437 // classloader_ptr - pre-checked for NULL | |
2438 jvmtiError | |
2439 JvmtiEnv::GetClassLoader(oop k_mirror, jobject* classloader_ptr) { | |
2440 { | |
2441 if (java_lang_Class::is_primitive(k_mirror)) { | |
2442 *classloader_ptr = (jclass) jni_reference(Handle()); | |
2443 return JVMTI_ERROR_NONE; | |
2444 } | |
2445 JavaThread* current_thread = JavaThread::current(); | |
2446 HandleMark hm(current_thread); | |
2447 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2448 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
2449 | |
2450 oop result_oop = Klass::cast(k)->class_loader(); | |
2451 if (result_oop == NULL) { | |
2452 *classloader_ptr = (jclass) jni_reference(Handle()); | |
2453 return JVMTI_ERROR_NONE; | |
2454 } | |
2455 Handle result_handle = Handle(current_thread, result_oop); | |
2456 jclass result_jnihandle = (jclass) jni_reference(result_handle); | |
2457 *classloader_ptr = result_jnihandle; | |
2458 } | |
2459 return JVMTI_ERROR_NONE; | |
2460 } /* end GetClassLoader */ | |
2461 | |
2462 | |
2463 // k_mirror - may be primitive, this must be checked | |
2464 // source_debug_extension_ptr - pre-checked for NULL | |
2465 jvmtiError | |
2466 JvmtiEnv::GetSourceDebugExtension(oop k_mirror, char** source_debug_extension_ptr) { | |
2467 { | |
2468 if (java_lang_Class::is_primitive(k_mirror)) { | |
2469 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2470 } | |
2471 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2472 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
2473 if (!Klass::cast(k)->oop_is_instance()) { | |
2474 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2475 } | |
2476 symbolOop sdeOop = instanceKlass::cast(k)->source_debug_extension(); | |
2477 NULL_CHECK(sdeOop, JVMTI_ERROR_ABSENT_INFORMATION); | |
2478 | |
2479 { | |
2480 JavaThread* current_thread = JavaThread::current(); | |
2481 ResourceMark rm(current_thread); | |
2482 const char* sdecp = (const char*) sdeOop->as_C_string(); | |
2483 *source_debug_extension_ptr = (char *) jvmtiMalloc(strlen(sdecp)+1); | |
2484 strcpy(*source_debug_extension_ptr, sdecp); | |
2485 } | |
2486 } | |
2487 | |
2488 return JVMTI_ERROR_NONE; | |
2489 } /* end GetSourceDebugExtension */ | |
2490 | |
2491 // | |
2492 // Object functions | |
2493 // | |
2494 | |
2495 // hash_code_ptr - pre-checked for NULL | |
2496 jvmtiError | |
2497 JvmtiEnv::GetObjectHashCode(jobject object, jint* hash_code_ptr) { | |
2498 oop mirror = JNIHandles::resolve_external_guard(object); | |
2499 NULL_CHECK(mirror, JVMTI_ERROR_INVALID_OBJECT); | |
2500 NULL_CHECK(hash_code_ptr, JVMTI_ERROR_NULL_POINTER); | |
2501 | |
2502 { | |
2503 jint result = (jint) mirror->identity_hash(); | |
2504 *hash_code_ptr = result; | |
2505 } | |
2506 return JVMTI_ERROR_NONE; | |
2507 } /* end GetObjectHashCode */ | |
2508 | |
2509 | |
2510 // info_ptr - pre-checked for NULL | |
2511 jvmtiError | |
2512 JvmtiEnv::GetObjectMonitorUsage(jobject object, jvmtiMonitorUsage* info_ptr) { | |
2513 JavaThread* calling_thread = JavaThread::current(); | |
2514 jvmtiError err = get_object_monitor_usage(calling_thread, object, info_ptr); | |
2515 if (err == JVMTI_ERROR_THREAD_NOT_SUSPENDED) { | |
2516 // Some of the critical threads were not suspended. go to a safepoint and try again | |
2517 VM_GetObjectMonitorUsage op(this, calling_thread, object, info_ptr); | |
2518 VMThread::execute(&op); | |
2519 err = op.result(); | |
2520 } | |
2521 return err; | |
2522 } /* end GetObjectMonitorUsage */ | |
2523 | |
2524 | |
2525 // | |
2526 // Field functions | |
2527 // | |
2528 | |
2529 // name_ptr - NULL is a valid value, must be checked | |
2530 // signature_ptr - NULL is a valid value, must be checked | |
2531 // generic_ptr - NULL is a valid value, must be checked | |
2532 jvmtiError | |
2533 JvmtiEnv::GetFieldName(fieldDescriptor* fdesc_ptr, char** name_ptr, char** signature_ptr, char** generic_ptr) { | |
2534 JavaThread* current_thread = JavaThread::current(); | |
2535 ResourceMark rm(current_thread); | |
2536 if (name_ptr == NULL) { | |
2537 // just don't return the name | |
2538 } else { | |
2539 const char* fieldName = fdesc_ptr->name()->as_C_string(); | |
2540 *name_ptr = (char*) jvmtiMalloc(strlen(fieldName) + 1); | |
2541 if (*name_ptr == NULL) | |
2542 return JVMTI_ERROR_OUT_OF_MEMORY; | |
2543 strcpy(*name_ptr, fieldName); | |
2544 } | |
2545 if (signature_ptr== NULL) { | |
2546 // just don't return the signature | |
2547 } else { | |
2548 const char* fieldSignature = fdesc_ptr->signature()->as_C_string(); | |
2549 *signature_ptr = (char*) jvmtiMalloc(strlen(fieldSignature) + 1); | |
2550 if (*signature_ptr == NULL) | |
2551 return JVMTI_ERROR_OUT_OF_MEMORY; | |
2552 strcpy(*signature_ptr, fieldSignature); | |
2553 } | |
2554 if (generic_ptr != NULL) { | |
2555 *generic_ptr = NULL; | |
2556 symbolOop soop = fdesc_ptr->generic_signature(); | |
2557 if (soop != NULL) { | |
2558 const char* gen_sig = soop->as_C_string(); | |
2559 if (gen_sig != NULL) { | |
2560 jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr); | |
2561 if (err != JVMTI_ERROR_NONE) { | |
2562 return err; | |
2563 } | |
2564 strcpy(*generic_ptr, gen_sig); | |
2565 } | |
2566 } | |
2567 } | |
2568 return JVMTI_ERROR_NONE; | |
2569 } /* end GetFieldName */ | |
2570 | |
2571 | |
2572 // declaring_class_ptr - pre-checked for NULL | |
2573 jvmtiError | |
2574 JvmtiEnv::GetFieldDeclaringClass(fieldDescriptor* fdesc_ptr, jclass* declaring_class_ptr) { | |
2575 | |
2576 *declaring_class_ptr = get_jni_class_non_null(fdesc_ptr->field_holder()); | |
2577 return JVMTI_ERROR_NONE; | |
2578 } /* end GetFieldDeclaringClass */ | |
2579 | |
2580 | |
2581 // modifiers_ptr - pre-checked for NULL | |
2582 jvmtiError | |
2583 JvmtiEnv::GetFieldModifiers(fieldDescriptor* fdesc_ptr, jint* modifiers_ptr) { | |
2584 | |
2585 AccessFlags resultFlags = fdesc_ptr->access_flags(); | |
2586 jint result = resultFlags.as_int(); | |
2587 *modifiers_ptr = result; | |
2588 | |
2589 return JVMTI_ERROR_NONE; | |
2590 } /* end GetFieldModifiers */ | |
2591 | |
2592 | |
2593 // is_synthetic_ptr - pre-checked for NULL | |
2594 jvmtiError | |
2595 JvmtiEnv::IsFieldSynthetic(fieldDescriptor* fdesc_ptr, jboolean* is_synthetic_ptr) { | |
2596 *is_synthetic_ptr = fdesc_ptr->is_synthetic(); | |
2597 return JVMTI_ERROR_NONE; | |
2598 } /* end IsFieldSynthetic */ | |
2599 | |
2600 | |
2601 // | |
2602 // Method functions | |
2603 // | |
2604 | |
2605 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2606 // name_ptr - NULL is a valid value, must be checked | |
2607 // signature_ptr - NULL is a valid value, must be checked | |
2608 // generic_ptr - NULL is a valid value, must be checked | |
2609 jvmtiError | |
2610 JvmtiEnv::GetMethodName(methodOop method_oop, char** name_ptr, char** signature_ptr, char** generic_ptr) { | |
2611 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2612 JavaThread* current_thread = JavaThread::current(); | |
2613 | |
2614 ResourceMark rm(current_thread); // get the utf8 name and signature | |
2615 if (name_ptr == NULL) { | |
2616 // just don't return the name | |
2617 } else { | |
2618 const char* utf8_name = (const char *) method_oop->name()->as_utf8(); | |
2619 *name_ptr = (char *) jvmtiMalloc(strlen(utf8_name)+1); | |
2620 strcpy(*name_ptr, utf8_name); | |
2621 } | |
2622 if (signature_ptr == NULL) { | |
2623 // just don't return the signature | |
2624 } else { | |
2625 const char* utf8_signature = (const char *) method_oop->signature()->as_utf8(); | |
2626 *signature_ptr = (char *) jvmtiMalloc(strlen(utf8_signature) + 1); | |
2627 strcpy(*signature_ptr, utf8_signature); | |
2628 } | |
2629 | |
2630 if (generic_ptr != NULL) { | |
2631 *generic_ptr = NULL; | |
2632 symbolOop soop = method_oop->generic_signature(); | |
2633 if (soop != NULL) { | |
2634 const char* gen_sig = soop->as_C_string(); | |
2635 if (gen_sig != NULL) { | |
2636 jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr); | |
2637 if (err != JVMTI_ERROR_NONE) { | |
2638 return err; | |
2639 } | |
2640 strcpy(*generic_ptr, gen_sig); | |
2641 } | |
2642 } | |
2643 } | |
2644 return JVMTI_ERROR_NONE; | |
2645 } /* end GetMethodName */ | |
2646 | |
2647 | |
2648 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2649 // declaring_class_ptr - pre-checked for NULL | |
2650 jvmtiError | |
2651 JvmtiEnv::GetMethodDeclaringClass(methodOop method_oop, jclass* declaring_class_ptr) { | |
2652 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2653 (*declaring_class_ptr) = get_jni_class_non_null(method_oop->method_holder()); | |
2654 return JVMTI_ERROR_NONE; | |
2655 } /* end GetMethodDeclaringClass */ | |
2656 | |
2657 | |
2658 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2659 // modifiers_ptr - pre-checked for NULL | |
2660 jvmtiError | |
2661 JvmtiEnv::GetMethodModifiers(methodOop method_oop, jint* modifiers_ptr) { | |
2662 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2663 (*modifiers_ptr) = method_oop->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
2664 return JVMTI_ERROR_NONE; | |
2665 } /* end GetMethodModifiers */ | |
2666 | |
2667 | |
2668 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2669 // max_ptr - pre-checked for NULL | |
2670 jvmtiError | |
2671 JvmtiEnv::GetMaxLocals(methodOop method_oop, jint* max_ptr) { | |
2672 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2673 // get max stack | |
2674 (*max_ptr) = method_oop->max_locals(); | |
2675 return JVMTI_ERROR_NONE; | |
2676 } /* end GetMaxLocals */ | |
2677 | |
2678 | |
2679 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2680 // size_ptr - pre-checked for NULL | |
2681 jvmtiError | |
2682 JvmtiEnv::GetArgumentsSize(methodOop method_oop, jint* size_ptr) { | |
2683 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2684 // get size of arguments | |
2685 | |
2686 (*size_ptr) = method_oop->size_of_parameters(); | |
2687 return JVMTI_ERROR_NONE; | |
2688 } /* end GetArgumentsSize */ | |
2689 | |
2690 | |
2691 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2692 // entry_count_ptr - pre-checked for NULL | |
2693 // table_ptr - pre-checked for NULL | |
2694 jvmtiError | |
2695 JvmtiEnv::GetLineNumberTable(methodOop method_oop, jint* entry_count_ptr, jvmtiLineNumberEntry** table_ptr) { | |
2696 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2697 if (!method_oop->has_linenumber_table()) { | |
2698 return (JVMTI_ERROR_ABSENT_INFORMATION); | |
2699 } | |
2700 | |
2701 // The line number table is compressed so we don't know how big it is until decompressed. | |
2702 // Decompression is really fast so we just do it twice. | |
2703 | |
2704 // Compute size of table | |
2705 jint num_entries = 0; | |
2706 CompressedLineNumberReadStream stream(method_oop->compressed_linenumber_table()); | |
2707 while (stream.read_pair()) { | |
2708 num_entries++; | |
2709 } | |
2710 jvmtiLineNumberEntry *jvmti_table = | |
2711 (jvmtiLineNumberEntry *)jvmtiMalloc(num_entries * (sizeof(jvmtiLineNumberEntry))); | |
2712 | |
2713 // Fill jvmti table | |
2714 if (num_entries > 0) { | |
2715 int index = 0; | |
2716 CompressedLineNumberReadStream stream(method_oop->compressed_linenumber_table()); | |
2717 while (stream.read_pair()) { | |
2718 jvmti_table[index].start_location = (jlocation) stream.bci(); | |
2719 jvmti_table[index].line_number = (jint) stream.line(); | |
2720 index++; | |
2721 } | |
2722 assert(index == num_entries, "sanity check"); | |
2723 } | |
2724 | |
2725 // Set up results | |
2726 (*entry_count_ptr) = num_entries; | |
2727 (*table_ptr) = jvmti_table; | |
2728 | |
2729 return JVMTI_ERROR_NONE; | |
2730 } /* end GetLineNumberTable */ | |
2731 | |
2732 | |
2733 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2734 // start_location_ptr - pre-checked for NULL | |
2735 // end_location_ptr - pre-checked for NULL | |
2736 jvmtiError | |
2737 JvmtiEnv::GetMethodLocation(methodOop method_oop, jlocation* start_location_ptr, jlocation* end_location_ptr) { | |
2738 | |
2739 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2740 // get start and end location | |
2741 (*end_location_ptr) = (jlocation) (method_oop->code_size() - 1); | |
2742 if (method_oop->code_size() == 0) { | |
2743 // there is no code so there is no start location | |
2744 (*start_location_ptr) = (jlocation)(-1); | |
2745 } else { | |
2746 (*start_location_ptr) = (jlocation)(0); | |
2747 } | |
2748 | |
2749 return JVMTI_ERROR_NONE; | |
2750 } /* end GetMethodLocation */ | |
2751 | |
2752 | |
2753 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2754 // entry_count_ptr - pre-checked for NULL | |
2755 // table_ptr - pre-checked for NULL | |
2756 jvmtiError | |
2757 JvmtiEnv::GetLocalVariableTable(methodOop method_oop, jint* entry_count_ptr, jvmtiLocalVariableEntry** table_ptr) { | |
2758 | |
2759 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2760 JavaThread* current_thread = JavaThread::current(); | |
2761 | |
2762 // does the klass have any local variable information? | |
2763 instanceKlass* ik = instanceKlass::cast(method_oop->method_holder()); | |
2764 if (!ik->access_flags().has_localvariable_table()) { | |
2765 return (JVMTI_ERROR_ABSENT_INFORMATION); | |
2766 } | |
2767 | |
2768 constantPoolOop constants = method_oop->constants(); | |
2769 NULL_CHECK(constants, JVMTI_ERROR_ABSENT_INFORMATION); | |
2770 | |
2771 // in the vm localvariable table representation, 6 consecutive elements in the table | |
2772 // represent a 6-tuple of shorts | |
2773 // [start_pc, length, name_index, descriptor_index, signature_index, index] | |
2774 jint num_entries = method_oop->localvariable_table_length(); | |
2775 jvmtiLocalVariableEntry *jvmti_table = (jvmtiLocalVariableEntry *) | |
2776 jvmtiMalloc(num_entries * (sizeof(jvmtiLocalVariableEntry))); | |
2777 | |
2778 if (num_entries > 0) { | |
2779 LocalVariableTableElement* table = method_oop->localvariable_table_start(); | |
2780 for (int i = 0; i < num_entries; i++) { | |
2781 // get the 5 tuple information from the vm table | |
2782 jlocation start_location = (jlocation) table[i].start_bci; | |
2783 jint length = (jint) table[i].length; | |
2784 int name_index = (int) table[i].name_cp_index; | |
2785 int signature_index = (int) table[i].descriptor_cp_index; | |
2786 int generic_signature_index = (int) table[i].signature_cp_index; | |
2787 jint slot = (jint) table[i].slot; | |
2788 | |
2789 // get utf8 name and signature | |
2790 char *name_buf = NULL; | |
2791 char *sig_buf = NULL; | |
2792 char *gen_sig_buf = NULL; | |
2793 { | |
2794 ResourceMark rm(current_thread); | |
2795 | |
2796 const char *utf8_name = (const char *) constants->symbol_at(name_index)->as_utf8(); | |
2797 name_buf = (char *) jvmtiMalloc(strlen(utf8_name)+1); | |
2798 strcpy(name_buf, utf8_name); | |
2799 | |
2800 const char *utf8_signature = (const char *) constants->symbol_at(signature_index)->as_utf8(); | |
2801 sig_buf = (char *) jvmtiMalloc(strlen(utf8_signature)+1); | |
2802 strcpy(sig_buf, utf8_signature); | |
2803 | |
2804 if (generic_signature_index > 0) { | |
2805 const char *utf8_gen_sign = (const char *) | |
2806 constants->symbol_at(generic_signature_index)->as_utf8(); | |
2807 gen_sig_buf = (char *) jvmtiMalloc(strlen(utf8_gen_sign)+1); | |
2808 strcpy(gen_sig_buf, utf8_gen_sign); | |
2809 } | |
2810 } | |
2811 | |
2812 // fill in the jvmti local variable table | |
2813 jvmti_table[i].start_location = start_location; | |
2814 jvmti_table[i].length = length; | |
2815 jvmti_table[i].name = name_buf; | |
2816 jvmti_table[i].signature = sig_buf; | |
2817 jvmti_table[i].generic_signature = gen_sig_buf; | |
2818 jvmti_table[i].slot = slot; | |
2819 } | |
2820 } | |
2821 | |
2822 // set results | |
2823 (*entry_count_ptr) = num_entries; | |
2824 (*table_ptr) = jvmti_table; | |
2825 | |
2826 return JVMTI_ERROR_NONE; | |
2827 } /* end GetLocalVariableTable */ | |
2828 | |
2829 | |
2830 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2831 // bytecode_count_ptr - pre-checked for NULL | |
2832 // bytecodes_ptr - pre-checked for NULL | |
2833 jvmtiError | |
2834 JvmtiEnv::GetBytecodes(methodOop method_oop, jint* bytecode_count_ptr, unsigned char** bytecodes_ptr) { | |
2835 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2836 | |
2837 HandleMark hm; | |
2838 methodHandle method(method_oop); | |
2839 jint size = (jint)method->code_size(); | |
2840 jvmtiError err = allocate(size, bytecodes_ptr); | |
2841 if (err != JVMTI_ERROR_NONE) { | |
2842 return err; | |
2843 } | |
2844 | |
2845 (*bytecode_count_ptr) = size; | |
2846 // get byte codes | |
2847 JvmtiClassFileReconstituter::copy_bytecodes(method, *bytecodes_ptr); | |
2848 | |
2849 return JVMTI_ERROR_NONE; | |
2850 } /* end GetBytecodes */ | |
2851 | |
2852 | |
2853 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2854 // is_native_ptr - pre-checked for NULL | |
2855 jvmtiError | |
2856 JvmtiEnv::IsMethodNative(methodOop method_oop, jboolean* is_native_ptr) { | |
2857 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2858 (*is_native_ptr) = method_oop->is_native(); | |
2859 return JVMTI_ERROR_NONE; | |
2860 } /* end IsMethodNative */ | |
2861 | |
2862 | |
2863 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2864 // is_synthetic_ptr - pre-checked for NULL | |
2865 jvmtiError | |
2866 JvmtiEnv::IsMethodSynthetic(methodOop method_oop, jboolean* is_synthetic_ptr) { | |
2867 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2868 (*is_synthetic_ptr) = method_oop->is_synthetic(); | |
2869 return JVMTI_ERROR_NONE; | |
2870 } /* end IsMethodSynthetic */ | |
2871 | |
2872 | |
2873 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2874 // is_obsolete_ptr - pre-checked for NULL | |
2875 jvmtiError | |
2876 JvmtiEnv::IsMethodObsolete(methodOop method_oop, jboolean* is_obsolete_ptr) { | |
1121 | 2877 if (use_version_1_0_semantics() && |
2878 get_capabilities()->can_redefine_classes == 0) { | |
2879 // This JvmtiEnv requested version 1.0 semantics and this function | |
2880 // requires the can_redefine_classes capability in version 1.0 so | |
2881 // we need to return an error here. | |
2882 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; | |
2883 } | |
2884 | |
0 | 2885 if (method_oop == NULL || method_oop->is_obsolete()) { |
2886 *is_obsolete_ptr = true; | |
2887 } else { | |
2888 *is_obsolete_ptr = false; | |
2889 } | |
2890 return JVMTI_ERROR_NONE; | |
2891 } /* end IsMethodObsolete */ | |
2892 | |
2893 // | |
2894 // Raw Monitor functions | |
2895 // | |
2896 | |
2897 // name - pre-checked for NULL | |
2898 // monitor_ptr - pre-checked for NULL | |
2899 jvmtiError | |
2900 JvmtiEnv::CreateRawMonitor(const char* name, jrawMonitorID* monitor_ptr) { | |
2901 JvmtiRawMonitor* rmonitor = new JvmtiRawMonitor(name); | |
2902 NULL_CHECK(rmonitor, JVMTI_ERROR_OUT_OF_MEMORY); | |
2903 | |
2904 *monitor_ptr = (jrawMonitorID)rmonitor; | |
2905 | |
2906 return JVMTI_ERROR_NONE; | |
2907 } /* end CreateRawMonitor */ | |
2908 | |
2909 | |
2910 // rmonitor - pre-checked for validity | |
2911 jvmtiError | |
2912 JvmtiEnv::DestroyRawMonitor(JvmtiRawMonitor * rmonitor) { | |
2913 if (Threads::number_of_threads() == 0) { | |
2914 // Remove this monitor from pending raw monitors list | |
2915 // if it has entered in onload or start phase. | |
2916 JvmtiPendingMonitors::destroy(rmonitor); | |
2917 } else { | |
2918 Thread* thread = Thread::current(); | |
2919 if (rmonitor->is_entered(thread)) { | |
2920 // The caller owns this monitor which we are about to destroy. | |
2921 // We exit the underlying synchronization object so that the | |
2922 // "delete monitor" call below can work without an assertion | |
2923 // failure on systems that don't like destroying synchronization | |
2924 // objects that are locked. | |
2925 int r; | |
2926 intptr_t recursion = rmonitor->recursions(); | |
2927 for (intptr_t i=0; i <= recursion; i++) { | |
2928 r = rmonitor->raw_exit(thread); | |
2929 assert(r == ObjectMonitor::OM_OK, "raw_exit should have worked"); | |
2930 if (r != ObjectMonitor::OM_OK) { // robustness | |
2931 return JVMTI_ERROR_INTERNAL; | |
2932 } | |
2933 } | |
2934 } | |
2935 if (rmonitor->owner() != NULL) { | |
2936 // The caller is trying to destroy a monitor that is locked by | |
2937 // someone else. While this is not forbidden by the JVMTI | |
2938 // spec, it will cause an assertion failure on systems that don't | |
2939 // like destroying synchronization objects that are locked. | |
2940 // We indicate a problem with the error return (and leak the | |
2941 // monitor's memory). | |
2942 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
2943 } | |
2944 } | |
2945 | |
2946 delete rmonitor; | |
2947 | |
2948 return JVMTI_ERROR_NONE; | |
2949 } /* end DestroyRawMonitor */ | |
2950 | |
2951 | |
2952 // rmonitor - pre-checked for validity | |
2953 jvmtiError | |
2954 JvmtiEnv::RawMonitorEnter(JvmtiRawMonitor * rmonitor) { | |
2955 if (Threads::number_of_threads() == 0) { | |
2956 // No JavaThreads exist so ObjectMonitor enter cannot be | |
2957 // used, add this raw monitor to the pending list. | |
2958 // The pending monitors will be actually entered when | |
2959 // the VM is setup. | |
2960 // See transition_pending_raw_monitors in create_vm() | |
2961 // in thread.cpp. | |
2962 JvmtiPendingMonitors::enter(rmonitor); | |
2963 } else { | |
2964 int r; | |
2965 Thread* thread = Thread::current(); | |
2966 | |
2967 if (thread->is_Java_thread()) { | |
2968 JavaThread* current_thread = (JavaThread*)thread; | |
2969 | |
2970 #ifdef PROPER_TRANSITIONS | |
2971 // Not really unknown but ThreadInVMfromNative does more than we want | |
2972 ThreadInVMfromUnknown __tiv; | |
2973 { | |
2974 ThreadBlockInVM __tbivm(current_thread); | |
2975 r = rmonitor->raw_enter(current_thread); | |
2976 } | |
2977 #else | |
2978 /* Transition to thread_blocked without entering vm state */ | |
2979 /* This is really evil. Normally you can't undo _thread_blocked */ | |
2980 /* transitions like this because it would cause us to miss a */ | |
2981 /* safepoint but since the thread was already in _thread_in_native */ | |
2982 /* the thread is not leaving a safepoint safe state and it will */ | |
2983 /* block when it tries to return from native. We can't safepoint */ | |
2984 /* block in here because we could deadlock the vmthread. Blech. */ | |
2985 | |
2986 JavaThreadState state = current_thread->thread_state(); | |
2987 assert(state == _thread_in_native, "Must be _thread_in_native"); | |
2988 // frame should already be walkable since we are in native | |
2989 assert(!current_thread->has_last_Java_frame() || | |
2990 current_thread->frame_anchor()->walkable(), "Must be walkable"); | |
2991 current_thread->set_thread_state(_thread_blocked); | |
2992 | |
2993 r = rmonitor->raw_enter(current_thread); | |
2994 // restore state, still at a safepoint safe state | |
2995 current_thread->set_thread_state(state); | |
2996 | |
2997 #endif /* PROPER_TRANSITIONS */ | |
2998 assert(r == ObjectMonitor::OM_OK, "raw_enter should have worked"); | |
2999 } else { | |
3000 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
3001 r = rmonitor->raw_enter(thread); | |
3002 } else { | |
3003 ShouldNotReachHere(); | |
3004 } | |
3005 } | |
3006 | |
3007 if (r != ObjectMonitor::OM_OK) { // robustness | |
3008 return JVMTI_ERROR_INTERNAL; | |
3009 } | |
3010 } | |
3011 return JVMTI_ERROR_NONE; | |
3012 } /* end RawMonitorEnter */ | |
3013 | |
3014 | |
3015 // rmonitor - pre-checked for validity | |
3016 jvmtiError | |
3017 JvmtiEnv::RawMonitorExit(JvmtiRawMonitor * rmonitor) { | |
3018 jvmtiError err = JVMTI_ERROR_NONE; | |
3019 | |
3020 if (Threads::number_of_threads() == 0) { | |
3021 // No JavaThreads exist so just remove this monitor from the pending list. | |
3022 // Bool value from exit is false if rmonitor is not in the list. | |
3023 if (!JvmtiPendingMonitors::exit(rmonitor)) { | |
3024 err = JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3025 } | |
3026 } else { | |
3027 int r; | |
3028 Thread* thread = Thread::current(); | |
3029 | |
3030 if (thread->is_Java_thread()) { | |
3031 JavaThread* current_thread = (JavaThread*)thread; | |
3032 #ifdef PROPER_TRANSITIONS | |
3033 // Not really unknown but ThreadInVMfromNative does more than we want | |
3034 ThreadInVMfromUnknown __tiv; | |
3035 #endif /* PROPER_TRANSITIONS */ | |
3036 r = rmonitor->raw_exit(current_thread); | |
3037 } else { | |
3038 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
3039 r = rmonitor->raw_exit(thread); | |
3040 } else { | |
3041 ShouldNotReachHere(); | |
3042 } | |
3043 } | |
3044 | |
3045 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
3046 err = JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3047 } else { | |
3048 assert(r == ObjectMonitor::OM_OK, "raw_exit should have worked"); | |
3049 if (r != ObjectMonitor::OM_OK) { // robustness | |
3050 err = JVMTI_ERROR_INTERNAL; | |
3051 } | |
3052 } | |
3053 } | |
3054 return err; | |
3055 } /* end RawMonitorExit */ | |
3056 | |
3057 | |
3058 // rmonitor - pre-checked for validity | |
3059 jvmtiError | |
3060 JvmtiEnv::RawMonitorWait(JvmtiRawMonitor * rmonitor, jlong millis) { | |
3061 int r; | |
3062 Thread* thread = Thread::current(); | |
3063 | |
3064 if (thread->is_Java_thread()) { | |
3065 JavaThread* current_thread = (JavaThread*)thread; | |
3066 #ifdef PROPER_TRANSITIONS | |
3067 // Not really unknown but ThreadInVMfromNative does more than we want | |
3068 ThreadInVMfromUnknown __tiv; | |
3069 { | |
3070 ThreadBlockInVM __tbivm(current_thread); | |
3071 r = rmonitor->raw_wait(millis, true, current_thread); | |
3072 } | |
3073 #else | |
3074 /* Transition to thread_blocked without entering vm state */ | |
3075 /* This is really evil. Normally you can't undo _thread_blocked */ | |
3076 /* transitions like this because it would cause us to miss a */ | |
3077 /* safepoint but since the thread was already in _thread_in_native */ | |
3078 /* the thread is not leaving a safepoint safe state and it will */ | |
3079 /* block when it tries to return from native. We can't safepoint */ | |
3080 /* block in here because we could deadlock the vmthread. Blech. */ | |
3081 | |
3082 JavaThreadState state = current_thread->thread_state(); | |
3083 assert(state == _thread_in_native, "Must be _thread_in_native"); | |
3084 // frame should already be walkable since we are in native | |
3085 assert(!current_thread->has_last_Java_frame() || | |
3086 current_thread->frame_anchor()->walkable(), "Must be walkable"); | |
3087 current_thread->set_thread_state(_thread_blocked); | |
3088 | |
3089 r = rmonitor->raw_wait(millis, true, current_thread); | |
3090 // restore state, still at a safepoint safe state | |
3091 current_thread->set_thread_state(state); | |
3092 | |
3093 #endif /* PROPER_TRANSITIONS */ | |
3094 } else { | |
3095 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
3096 r = rmonitor->raw_wait(millis, true, thread); | |
3097 } else { | |
3098 ShouldNotReachHere(); | |
3099 } | |
3100 } | |
3101 | |
3102 switch (r) { | |
3103 case ObjectMonitor::OM_INTERRUPTED: | |
3104 return JVMTI_ERROR_INTERRUPT; | |
3105 case ObjectMonitor::OM_ILLEGAL_MONITOR_STATE: | |
3106 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3107 } | |
3108 assert(r == ObjectMonitor::OM_OK, "raw_wait should have worked"); | |
3109 if (r != ObjectMonitor::OM_OK) { // robustness | |
3110 return JVMTI_ERROR_INTERNAL; | |
3111 } | |
3112 | |
3113 return JVMTI_ERROR_NONE; | |
3114 } /* end RawMonitorWait */ | |
3115 | |
3116 | |
3117 // rmonitor - pre-checked for validity | |
3118 jvmtiError | |
3119 JvmtiEnv::RawMonitorNotify(JvmtiRawMonitor * rmonitor) { | |
3120 int r; | |
3121 Thread* thread = Thread::current(); | |
3122 | |
3123 if (thread->is_Java_thread()) { | |
3124 JavaThread* current_thread = (JavaThread*)thread; | |
3125 // Not really unknown but ThreadInVMfromNative does more than we want | |
3126 ThreadInVMfromUnknown __tiv; | |
3127 r = rmonitor->raw_notify(current_thread); | |
3128 } else { | |
3129 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
3130 r = rmonitor->raw_notify(thread); | |
3131 } else { | |
3132 ShouldNotReachHere(); | |
3133 } | |
3134 } | |
3135 | |
3136 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
3137 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3138 } | |
3139 assert(r == ObjectMonitor::OM_OK, "raw_notify should have worked"); | |
3140 if (r != ObjectMonitor::OM_OK) { // robustness | |
3141 return JVMTI_ERROR_INTERNAL; | |
3142 } | |
3143 | |
3144 return JVMTI_ERROR_NONE; | |
3145 } /* end RawMonitorNotify */ | |
3146 | |
3147 | |
3148 // rmonitor - pre-checked for validity | |
3149 jvmtiError | |
3150 JvmtiEnv::RawMonitorNotifyAll(JvmtiRawMonitor * rmonitor) { | |
3151 int r; | |
3152 Thread* thread = Thread::current(); | |
3153 | |
3154 if (thread->is_Java_thread()) { | |
3155 JavaThread* current_thread = (JavaThread*)thread; | |
3156 ThreadInVMfromUnknown __tiv; | |
3157 r = rmonitor->raw_notifyAll(current_thread); | |
3158 } else { | |
3159 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
3160 r = rmonitor->raw_notifyAll(thread); | |
3161 } else { | |
3162 ShouldNotReachHere(); | |
3163 } | |
3164 } | |
3165 | |
3166 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
3167 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3168 } | |
3169 assert(r == ObjectMonitor::OM_OK, "raw_notifyAll should have worked"); | |
3170 if (r != ObjectMonitor::OM_OK) { // robustness | |
3171 return JVMTI_ERROR_INTERNAL; | |
3172 } | |
3173 | |
3174 return JVMTI_ERROR_NONE; | |
3175 } /* end RawMonitorNotifyAll */ | |
3176 | |
3177 | |
3178 // | |
3179 // JNI Function Interception functions | |
3180 // | |
3181 | |
3182 | |
3183 // function_table - pre-checked for NULL | |
3184 jvmtiError | |
3185 JvmtiEnv::SetJNIFunctionTable(const jniNativeInterface* function_table) { | |
3186 // Copy jni function table at safepoint. | |
3187 VM_JNIFunctionTableCopier copier(function_table); | |
3188 VMThread::execute(&copier); | |
3189 | |
3190 return JVMTI_ERROR_NONE; | |
3191 } /* end SetJNIFunctionTable */ | |
3192 | |
3193 | |
3194 // function_table - pre-checked for NULL | |
3195 jvmtiError | |
3196 JvmtiEnv::GetJNIFunctionTable(jniNativeInterface** function_table) { | |
3197 *function_table=(jniNativeInterface*)jvmtiMalloc(sizeof(jniNativeInterface)); | |
3198 if (*function_table == NULL) | |
3199 return JVMTI_ERROR_OUT_OF_MEMORY; | |
3200 memcpy(*function_table,(JavaThread::current())->get_jni_functions(),sizeof(jniNativeInterface)); | |
3201 return JVMTI_ERROR_NONE; | |
3202 } /* end GetJNIFunctionTable */ | |
3203 | |
3204 | |
3205 // | |
3206 // Event Management functions | |
3207 // | |
3208 | |
3209 jvmtiError | |
3210 JvmtiEnv::GenerateEvents(jvmtiEvent event_type) { | |
3211 // can only generate two event types | |
3212 if (event_type != JVMTI_EVENT_COMPILED_METHOD_LOAD && | |
3213 event_type != JVMTI_EVENT_DYNAMIC_CODE_GENERATED) { | |
3214 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
3215 } | |
3216 | |
3217 // for compiled_method_load events we must check that the environment | |
3218 // has the can_generate_compiled_method_load_events capability. | |
3219 if (event_type == JVMTI_EVENT_COMPILED_METHOD_LOAD) { | |
3220 if (get_capabilities()->can_generate_compiled_method_load_events == 0) { | |
3221 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; | |
3222 } | |
3223 return JvmtiCodeBlobEvents::generate_compiled_method_load_events(this); | |
3224 } else { | |
3225 return JvmtiCodeBlobEvents::generate_dynamic_code_events(this); | |
3226 } | |
3227 | |
3228 } /* end GenerateEvents */ | |
3229 | |
3230 | |
3231 // | |
3232 // Extension Mechanism functions | |
3233 // | |
3234 | |
3235 // extension_count_ptr - pre-checked for NULL | |
3236 // extensions - pre-checked for NULL | |
3237 jvmtiError | |
3238 JvmtiEnv::GetExtensionFunctions(jint* extension_count_ptr, jvmtiExtensionFunctionInfo** extensions) { | |
3239 return JvmtiExtensions::get_functions(this, extension_count_ptr, extensions); | |
3240 } /* end GetExtensionFunctions */ | |
3241 | |
3242 | |
3243 // extension_count_ptr - pre-checked for NULL | |
3244 // extensions - pre-checked for NULL | |
3245 jvmtiError | |
3246 JvmtiEnv::GetExtensionEvents(jint* extension_count_ptr, jvmtiExtensionEventInfo** extensions) { | |
3247 return JvmtiExtensions::get_events(this, extension_count_ptr, extensions); | |
3248 } /* end GetExtensionEvents */ | |
3249 | |
3250 | |
3251 // callback - NULL is a valid value, must be checked | |
3252 jvmtiError | |
3253 JvmtiEnv::SetExtensionEventCallback(jint extension_event_index, jvmtiExtensionEvent callback) { | |
3254 return JvmtiExtensions::set_event_callback(this, extension_event_index, callback); | |
3255 } /* end SetExtensionEventCallback */ | |
3256 | |
3257 // | |
3258 // Timers functions | |
3259 // | |
3260 | |
3261 // info_ptr - pre-checked for NULL | |
3262 jvmtiError | |
3263 JvmtiEnv::GetCurrentThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) { | |
3264 os::current_thread_cpu_time_info(info_ptr); | |
3265 return JVMTI_ERROR_NONE; | |
3266 } /* end GetCurrentThreadCpuTimerInfo */ | |
3267 | |
3268 | |
3269 // nanos_ptr - pre-checked for NULL | |
3270 jvmtiError | |
3271 JvmtiEnv::GetCurrentThreadCpuTime(jlong* nanos_ptr) { | |
3272 *nanos_ptr = os::current_thread_cpu_time(); | |
3273 return JVMTI_ERROR_NONE; | |
3274 } /* end GetCurrentThreadCpuTime */ | |
3275 | |
3276 | |
3277 // info_ptr - pre-checked for NULL | |
3278 jvmtiError | |
3279 JvmtiEnv::GetThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) { | |
3280 os::thread_cpu_time_info(info_ptr); | |
3281 return JVMTI_ERROR_NONE; | |
3282 } /* end GetThreadCpuTimerInfo */ | |
3283 | |
3284 | |
3285 // Threads_lock NOT held, java_thread not protected by lock | |
3286 // java_thread - pre-checked | |
3287 // nanos_ptr - pre-checked for NULL | |
3288 jvmtiError | |
3289 JvmtiEnv::GetThreadCpuTime(JavaThread* java_thread, jlong* nanos_ptr) { | |
3290 *nanos_ptr = os::thread_cpu_time(java_thread); | |
3291 return JVMTI_ERROR_NONE; | |
3292 } /* end GetThreadCpuTime */ | |
3293 | |
3294 | |
3295 // info_ptr - pre-checked for NULL | |
3296 jvmtiError | |
3297 JvmtiEnv::GetTimerInfo(jvmtiTimerInfo* info_ptr) { | |
3298 os::javaTimeNanos_info(info_ptr); | |
3299 return JVMTI_ERROR_NONE; | |
3300 } /* end GetTimerInfo */ | |
3301 | |
3302 | |
3303 // nanos_ptr - pre-checked for NULL | |
3304 jvmtiError | |
3305 JvmtiEnv::GetTime(jlong* nanos_ptr) { | |
3306 *nanos_ptr = os::javaTimeNanos(); | |
3307 return JVMTI_ERROR_NONE; | |
3308 } /* end GetTime */ | |
3309 | |
3310 | |
3311 // processor_count_ptr - pre-checked for NULL | |
3312 jvmtiError | |
3313 JvmtiEnv::GetAvailableProcessors(jint* processor_count_ptr) { | |
3314 *processor_count_ptr = os::active_processor_count(); | |
3315 return JVMTI_ERROR_NONE; | |
3316 } /* end GetAvailableProcessors */ | |
3317 | |
3318 // | |
3319 // System Properties functions | |
3320 // | |
3321 | |
3322 // count_ptr - pre-checked for NULL | |
3323 // property_ptr - pre-checked for NULL | |
3324 jvmtiError | |
3325 JvmtiEnv::GetSystemProperties(jint* count_ptr, char*** property_ptr) { | |
3326 jvmtiError err = JVMTI_ERROR_NONE; | |
3327 | |
3328 *count_ptr = Arguments::PropertyList_count(Arguments::system_properties()); | |
3329 | |
3330 err = allocate(*count_ptr * sizeof(char *), (unsigned char **)property_ptr); | |
3331 if (err != JVMTI_ERROR_NONE) { | |
3332 return err; | |
3333 } | |
3334 int i = 0 ; | |
3335 for (SystemProperty* p = Arguments::system_properties(); p != NULL && i < *count_ptr; p = p->next(), i++) { | |
3336 const char *key = p->key(); | |
3337 char **tmp_value = *property_ptr+i; | |
3338 err = allocate((strlen(key)+1) * sizeof(char), (unsigned char**)tmp_value); | |
3339 if (err == JVMTI_ERROR_NONE) { | |
3340 strcpy(*tmp_value, key); | |
3341 } else { | |
3342 // clean up previously allocated memory. | |
3343 for (int j=0; j<i; j++) { | |
3344 Deallocate((unsigned char*)*property_ptr+j); | |
3345 } | |
3346 Deallocate((unsigned char*)property_ptr); | |
3347 break; | |
3348 } | |
3349 } | |
3350 return err; | |
3351 } /* end GetSystemProperties */ | |
3352 | |
3353 | |
3354 // property - pre-checked for NULL | |
3355 // value_ptr - pre-checked for NULL | |
3356 jvmtiError | |
3357 JvmtiEnv::GetSystemProperty(const char* property, char** value_ptr) { | |
3358 jvmtiError err = JVMTI_ERROR_NONE; | |
3359 const char *value; | |
3360 | |
3361 value = Arguments::PropertyList_get_value(Arguments::system_properties(), property); | |
3362 if (value == NULL) { | |
3363 err = JVMTI_ERROR_NOT_AVAILABLE; | |
3364 } else { | |
3365 err = allocate((strlen(value)+1) * sizeof(char), (unsigned char **)value_ptr); | |
3366 if (err == JVMTI_ERROR_NONE) { | |
3367 strcpy(*value_ptr, value); | |
3368 } | |
3369 } | |
3370 return err; | |
3371 } /* end GetSystemProperty */ | |
3372 | |
3373 | |
3374 // property - pre-checked for NULL | |
3375 // value - NULL is a valid value, must be checked | |
3376 jvmtiError | |
3377 JvmtiEnv::SetSystemProperty(const char* property, const char* value) { | |
3378 jvmtiError err =JVMTI_ERROR_NOT_AVAILABLE; | |
3379 | |
3380 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
3381 if (strcmp(property, p->key()) == 0) { | |
3382 if (p->set_value((char *)value)) { | |
3383 err = JVMTI_ERROR_NONE; | |
3384 } | |
3385 } | |
3386 } | |
3387 return err; | |
3388 } /* end SetSystemProperty */ | |
3389 | |
3390 #endif // !JVMTI_KERNEL |