Mercurial > hg > truffle
annotate src/share/vm/prims/jvmtiEnv.cpp @ 4029:ddb34559f9a7
Added tag jdk8-b12 for changeset 1d3900713a67
author | katleman |
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date | Thu, 03 Nov 2011 10:32:16 -0700 |
parents | f08d439fab8c |
children | a6eef545f1a2 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/systemDictionary.hpp" | |
27 #include "classfile/vmSymbols.hpp" | |
28 #include "interpreter/bytecodeStream.hpp" | |
29 #include "interpreter/interpreter.hpp" | |
30 #include "jvmtifiles/jvmtiEnv.hpp" | |
31 #include "memory/resourceArea.hpp" | |
32 #include "memory/universe.inline.hpp" | |
33 #include "oops/cpCacheOop.hpp" | |
34 #include "oops/instanceKlass.hpp" | |
35 #include "prims/jniCheck.hpp" | |
36 #include "prims/jvm_misc.hpp" | |
37 #include "prims/jvmtiAgentThread.hpp" | |
38 #include "prims/jvmtiClassFileReconstituter.hpp" | |
39 #include "prims/jvmtiCodeBlobEvents.hpp" | |
40 #include "prims/jvmtiExtensions.hpp" | |
41 #include "prims/jvmtiGetLoadedClasses.hpp" | |
42 #include "prims/jvmtiImpl.hpp" | |
43 #include "prims/jvmtiManageCapabilities.hpp" | |
44 #include "prims/jvmtiRawMonitor.hpp" | |
45 #include "prims/jvmtiRedefineClasses.hpp" | |
46 #include "prims/jvmtiTagMap.hpp" | |
47 #include "prims/jvmtiThreadState.inline.hpp" | |
48 #include "prims/jvmtiUtil.hpp" | |
49 #include "runtime/arguments.hpp" | |
50 #include "runtime/deoptimization.hpp" | |
51 #include "runtime/interfaceSupport.hpp" | |
52 #include "runtime/javaCalls.hpp" | |
53 #include "runtime/jfieldIDWorkaround.hpp" | |
54 #include "runtime/osThread.hpp" | |
55 #include "runtime/reflectionUtils.hpp" | |
56 #include "runtime/signature.hpp" | |
57 #include "runtime/vframe.hpp" | |
58 #include "runtime/vmThread.hpp" | |
59 #include "services/threadService.hpp" | |
60 #include "utilities/exceptions.hpp" | |
61 #include "utilities/preserveException.hpp" | |
62 #ifdef TARGET_OS_FAMILY_linux | |
63 # include "thread_linux.inline.hpp" | |
64 #endif | |
65 #ifdef TARGET_OS_FAMILY_solaris | |
66 # include "thread_solaris.inline.hpp" | |
67 #endif | |
68 #ifdef TARGET_OS_FAMILY_windows | |
69 # include "thread_windows.inline.hpp" | |
70 #endif | |
3960 | 71 #ifdef TARGET_OS_FAMILY_bsd |
72 # include "thread_bsd.inline.hpp" | |
73 #endif | |
1972 | 74 |
0 | 75 |
76 | |
77 #define FIXLATER 0 // REMOVE this when completed. | |
78 | |
79 // FIXLATER: hook into JvmtiTrace | |
80 #define TraceJVMTICalls false | |
81 | |
1121 | 82 JvmtiEnv::JvmtiEnv(jint version) : JvmtiEnvBase(version) { |
0 | 83 } |
84 | |
85 JvmtiEnv::~JvmtiEnv() { | |
86 } | |
87 | |
88 JvmtiEnv* | |
1121 | 89 JvmtiEnv::create_a_jvmti(jint version) { |
90 return new JvmtiEnv(version); | |
0 | 91 } |
92 | |
93 // VM operation class to copy jni function table at safepoint. | |
94 // More than one java threads or jvmti agents may be reading/ | |
95 // modifying jni function tables. To reduce the risk of bad | |
96 // interaction b/w these threads it is copied at safepoint. | |
97 class VM_JNIFunctionTableCopier : public VM_Operation { | |
98 private: | |
99 const struct JNINativeInterface_ *_function_table; | |
100 public: | |
101 VM_JNIFunctionTableCopier(const struct JNINativeInterface_ *func_tbl) { | |
102 _function_table = func_tbl; | |
103 }; | |
104 | |
105 VMOp_Type type() const { return VMOp_JNIFunctionTableCopier; } | |
106 void doit() { | |
107 copy_jni_function_table(_function_table); | |
108 }; | |
109 }; | |
110 | |
111 // | |
112 // Do not change the "prefix" marker below, everything above it is copied | |
113 // unchanged into the filled stub, everything below is controlled by the | |
114 // stub filler (only method bodies are carried forward, and then only for | |
115 // functionality still in the spec). | |
116 // | |
117 // end file prefix | |
118 | |
119 // | |
120 // Memory Management functions | |
121 // | |
122 | |
123 // mem_ptr - pre-checked for NULL | |
124 jvmtiError | |
125 JvmtiEnv::Allocate(jlong size, unsigned char** mem_ptr) { | |
126 return allocate(size, mem_ptr); | |
127 } /* end Allocate */ | |
128 | |
129 | |
130 // mem - NULL is a valid value, must be checked | |
131 jvmtiError | |
132 JvmtiEnv::Deallocate(unsigned char* mem) { | |
133 return deallocate(mem); | |
134 } /* end Deallocate */ | |
135 | |
136 // Threads_lock NOT held, java_thread not protected by lock | |
137 // java_thread - pre-checked | |
138 // data - NULL is a valid value, must be checked | |
139 jvmtiError | |
140 JvmtiEnv::SetThreadLocalStorage(JavaThread* java_thread, const void* data) { | |
141 JvmtiThreadState* state = java_thread->jvmti_thread_state(); | |
142 if (state == NULL) { | |
143 if (data == NULL) { | |
144 // leaving state unset same as data set to NULL | |
145 return JVMTI_ERROR_NONE; | |
146 } | |
147 // otherwise, create the state | |
148 state = JvmtiThreadState::state_for(java_thread); | |
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149 if (state == NULL) { |
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150 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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151 } |
0 | 152 } |
153 state->env_thread_state(this)->set_agent_thread_local_storage_data((void*)data); | |
154 return JVMTI_ERROR_NONE; | |
155 } /* end SetThreadLocalStorage */ | |
156 | |
157 | |
158 // Threads_lock NOT held | |
159 // thread - NOT pre-checked | |
160 // data_ptr - pre-checked for NULL | |
161 jvmtiError | |
162 JvmtiEnv::GetThreadLocalStorage(jthread thread, void** data_ptr) { | |
163 JavaThread* current_thread = JavaThread::current(); | |
164 if (thread == NULL) { | |
165 JvmtiThreadState* state = current_thread->jvmti_thread_state(); | |
166 *data_ptr = (state == NULL) ? NULL : | |
167 state->env_thread_state(this)->get_agent_thread_local_storage_data(); | |
168 } else { | |
169 | |
170 // jvmti_GetThreadLocalStorage is "in native" and doesn't transition | |
171 // the thread to _thread_in_vm. However, when the TLS for a thread | |
172 // other than the current thread is required we need to transition | |
173 // from native so as to resolve the jthread. | |
174 | |
175 ThreadInVMfromNative __tiv(current_thread); | |
176 __ENTRY(jvmtiError, JvmtiEnv::GetThreadLocalStorage , current_thread) | |
177 debug_only(VMNativeEntryWrapper __vew;) | |
178 | |
179 oop thread_oop = JNIHandles::resolve_external_guard(thread); | |
180 if (thread_oop == NULL) { | |
181 return JVMTI_ERROR_INVALID_THREAD; | |
182 } | |
1142 | 183 if (!thread_oop->is_a(SystemDictionary::Thread_klass())) { |
0 | 184 return JVMTI_ERROR_INVALID_THREAD; |
185 } | |
186 JavaThread* java_thread = java_lang_Thread::thread(thread_oop); | |
187 if (java_thread == NULL) { | |
188 return JVMTI_ERROR_THREAD_NOT_ALIVE; | |
189 } | |
190 JvmtiThreadState* state = java_thread->jvmti_thread_state(); | |
191 *data_ptr = (state == NULL) ? NULL : | |
192 state->env_thread_state(this)->get_agent_thread_local_storage_data(); | |
193 } | |
194 return JVMTI_ERROR_NONE; | |
195 } /* end GetThreadLocalStorage */ | |
196 | |
197 // | |
198 // Class functions | |
199 // | |
200 | |
201 // class_count_ptr - pre-checked for NULL | |
202 // classes_ptr - pre-checked for NULL | |
203 jvmtiError | |
204 JvmtiEnv::GetLoadedClasses(jint* class_count_ptr, jclass** classes_ptr) { | |
205 return JvmtiGetLoadedClasses::getLoadedClasses(this, class_count_ptr, classes_ptr); | |
206 } /* end GetLoadedClasses */ | |
207 | |
208 | |
209 // initiating_loader - NULL is a valid value, must be checked | |
210 // class_count_ptr - pre-checked for NULL | |
211 // classes_ptr - pre-checked for NULL | |
212 jvmtiError | |
213 JvmtiEnv::GetClassLoaderClasses(jobject initiating_loader, jint* class_count_ptr, jclass** classes_ptr) { | |
214 return JvmtiGetLoadedClasses::getClassLoaderClasses(this, initiating_loader, | |
215 class_count_ptr, classes_ptr); | |
216 } /* end GetClassLoaderClasses */ | |
217 | |
218 // k_mirror - may be primitive, this must be checked | |
219 // is_modifiable_class_ptr - pre-checked for NULL | |
220 jvmtiError | |
221 JvmtiEnv::IsModifiableClass(oop k_mirror, jboolean* is_modifiable_class_ptr) { | |
222 *is_modifiable_class_ptr = VM_RedefineClasses::is_modifiable_class(k_mirror)? | |
223 JNI_TRUE : JNI_FALSE; | |
224 return JVMTI_ERROR_NONE; | |
225 } /* end IsModifiableClass */ | |
226 | |
227 // class_count - pre-checked to be greater than or equal to 0 | |
228 // classes - pre-checked for NULL | |
229 jvmtiError | |
230 JvmtiEnv::RetransformClasses(jint class_count, const jclass* classes) { | |
231 //TODO: add locking | |
232 | |
233 int index; | |
234 JavaThread* current_thread = JavaThread::current(); | |
235 ResourceMark rm(current_thread); | |
236 | |
237 jvmtiClassDefinition* class_definitions = | |
238 NEW_RESOURCE_ARRAY(jvmtiClassDefinition, class_count); | |
239 NULL_CHECK(class_definitions, JVMTI_ERROR_OUT_OF_MEMORY); | |
240 | |
241 for (index = 0; index < class_count; index++) { | |
242 HandleMark hm(current_thread); | |
243 | |
244 jclass jcls = classes[index]; | |
245 oop k_mirror = JNIHandles::resolve_external_guard(jcls); | |
246 if (k_mirror == NULL) { | |
247 return JVMTI_ERROR_INVALID_CLASS; | |
248 } | |
1142 | 249 if (!k_mirror->is_a(SystemDictionary::Class_klass())) { |
0 | 250 return JVMTI_ERROR_INVALID_CLASS; |
251 } | |
252 | |
253 if (java_lang_Class::is_primitive(k_mirror)) { | |
254 return JVMTI_ERROR_UNMODIFIABLE_CLASS; | |
255 } | |
256 | |
257 klassOop k_oop = java_lang_Class::as_klassOop(k_mirror); | |
258 KlassHandle klass(current_thread, k_oop); | |
259 | |
260 jint status = klass->jvmti_class_status(); | |
261 if (status & (JVMTI_CLASS_STATUS_ERROR)) { | |
262 return JVMTI_ERROR_INVALID_CLASS; | |
263 } | |
264 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { | |
265 return JVMTI_ERROR_UNMODIFIABLE_CLASS; | |
266 } | |
267 | |
268 instanceKlassHandle ikh(current_thread, k_oop); | |
269 if (ikh->get_cached_class_file_bytes() == NULL) { | |
270 // not cached, we need to reconstitute the class file from VM representation | |
271 constantPoolHandle constants(current_thread, ikh->constants()); | |
272 ObjectLocker ol(constants, current_thread); // lock constant pool while we query it | |
273 | |
274 JvmtiClassFileReconstituter reconstituter(ikh); | |
275 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
276 return reconstituter.get_error(); | |
277 } | |
278 | |
279 class_definitions[index].class_byte_count = (jint)reconstituter.class_file_size(); | |
280 class_definitions[index].class_bytes = (unsigned char*) | |
281 reconstituter.class_file_bytes(); | |
282 } else { | |
283 // it is cached, get it from the cache | |
284 class_definitions[index].class_byte_count = ikh->get_cached_class_file_len(); | |
285 class_definitions[index].class_bytes = ikh->get_cached_class_file_bytes(); | |
286 } | |
287 class_definitions[index].klass = jcls; | |
288 } | |
289 VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_retransform); | |
290 VMThread::execute(&op); | |
291 return (op.check_error()); | |
292 } /* end RetransformClasses */ | |
293 | |
294 | |
295 // class_count - pre-checked to be greater than or equal to 0 | |
296 // class_definitions - pre-checked for NULL | |
297 jvmtiError | |
298 JvmtiEnv::RedefineClasses(jint class_count, const jvmtiClassDefinition* class_definitions) { | |
299 //TODO: add locking | |
300 VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_redefine); | |
301 VMThread::execute(&op); | |
302 return (op.check_error()); | |
303 } /* end RedefineClasses */ | |
304 | |
305 | |
306 // | |
307 // Object functions | |
308 // | |
309 | |
310 // size_ptr - pre-checked for NULL | |
311 jvmtiError | |
312 JvmtiEnv::GetObjectSize(jobject object, jlong* size_ptr) { | |
313 oop mirror = JNIHandles::resolve_external_guard(object); | |
314 NULL_CHECK(mirror, JVMTI_ERROR_INVALID_OBJECT); | |
315 | |
1142 | 316 if (mirror->klass() == SystemDictionary::Class_klass()) { |
0 | 317 if (!java_lang_Class::is_primitive(mirror)) { |
318 mirror = java_lang_Class::as_klassOop(mirror); | |
319 assert(mirror != NULL, "class for non-primitive mirror must exist"); | |
320 } | |
321 } | |
322 | |
323 *size_ptr = mirror->size() * wordSize; | |
324 return JVMTI_ERROR_NONE; | |
325 } /* end GetObjectSize */ | |
326 | |
327 // | |
328 // Method functions | |
329 // | |
330 | |
331 // prefix - NULL is a valid value, must be checked | |
332 jvmtiError | |
333 JvmtiEnv::SetNativeMethodPrefix(const char* prefix) { | |
334 return prefix == NULL? | |
335 SetNativeMethodPrefixes(0, NULL) : | |
336 SetNativeMethodPrefixes(1, (char**)&prefix); | |
337 } /* end SetNativeMethodPrefix */ | |
338 | |
339 | |
340 // prefix_count - pre-checked to be greater than or equal to 0 | |
341 // prefixes - pre-checked for NULL | |
342 jvmtiError | |
343 JvmtiEnv::SetNativeMethodPrefixes(jint prefix_count, char** prefixes) { | |
344 // Have to grab JVMTI thread state lock to be sure that some thread | |
345 // isn't accessing the prefixes at the same time we are setting them. | |
346 // No locks during VM bring-up. | |
347 if (Threads::number_of_threads() == 0) { | |
348 return set_native_method_prefixes(prefix_count, prefixes); | |
349 } else { | |
350 MutexLocker mu(JvmtiThreadState_lock); | |
351 return set_native_method_prefixes(prefix_count, prefixes); | |
352 } | |
353 } /* end SetNativeMethodPrefixes */ | |
354 | |
355 // | |
356 // Event Management functions | |
357 // | |
358 | |
359 // callbacks - NULL is a valid value, must be checked | |
360 // size_of_callbacks - pre-checked to be greater than or equal to 0 | |
361 jvmtiError | |
362 JvmtiEnv::SetEventCallbacks(const jvmtiEventCallbacks* callbacks, jint size_of_callbacks) { | |
363 JvmtiEventController::set_event_callbacks(this, callbacks, size_of_callbacks); | |
364 return JVMTI_ERROR_NONE; | |
365 } /* end SetEventCallbacks */ | |
366 | |
367 | |
368 // event_thread - NULL is a valid value, must be checked | |
369 jvmtiError | |
370 JvmtiEnv::SetEventNotificationMode(jvmtiEventMode mode, jvmtiEvent event_type, jthread event_thread, ...) { | |
371 JavaThread* java_thread = NULL; | |
372 if (event_thread != NULL) { | |
373 oop thread_oop = JNIHandles::resolve_external_guard(event_thread); | |
374 if (thread_oop == NULL) { | |
375 return JVMTI_ERROR_INVALID_THREAD; | |
376 } | |
1142 | 377 if (!thread_oop->is_a(SystemDictionary::Thread_klass())) { |
0 | 378 return JVMTI_ERROR_INVALID_THREAD; |
379 } | |
380 java_thread = java_lang_Thread::thread(thread_oop); | |
381 if (java_thread == NULL) { | |
382 return JVMTI_ERROR_THREAD_NOT_ALIVE; | |
383 } | |
384 } | |
385 | |
386 // event_type must be valid | |
387 if (!JvmtiEventController::is_valid_event_type(event_type)) { | |
388 return JVMTI_ERROR_INVALID_EVENT_TYPE; | |
389 } | |
390 | |
391 // global events cannot be controlled at thread level. | |
392 if (java_thread != NULL && JvmtiEventController::is_global_event(event_type)) { | |
393 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
394 } | |
395 | |
396 bool enabled = (mode == JVMTI_ENABLE); | |
397 | |
398 // assure that needed capabilities are present | |
399 if (enabled && !JvmtiUtil::has_event_capability(event_type, get_capabilities())) { | |
400 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; | |
401 } | |
402 | |
403 if (event_type == JVMTI_EVENT_CLASS_FILE_LOAD_HOOK && enabled) { | |
404 record_class_file_load_hook_enabled(); | |
405 } | |
406 JvmtiEventController::set_user_enabled(this, java_thread, event_type, enabled); | |
407 | |
408 return JVMTI_ERROR_NONE; | |
409 } /* end SetEventNotificationMode */ | |
410 | |
411 // | |
412 // Capability functions | |
413 // | |
414 | |
415 // capabilities_ptr - pre-checked for NULL | |
416 jvmtiError | |
417 JvmtiEnv::GetPotentialCapabilities(jvmtiCapabilities* capabilities_ptr) { | |
418 JvmtiManageCapabilities::get_potential_capabilities(get_capabilities(), | |
419 get_prohibited_capabilities(), | |
420 capabilities_ptr); | |
421 return JVMTI_ERROR_NONE; | |
422 } /* end GetPotentialCapabilities */ | |
423 | |
424 | |
425 // capabilities_ptr - pre-checked for NULL | |
426 jvmtiError | |
427 JvmtiEnv::AddCapabilities(const jvmtiCapabilities* capabilities_ptr) { | |
428 return JvmtiManageCapabilities::add_capabilities(get_capabilities(), | |
429 get_prohibited_capabilities(), | |
430 capabilities_ptr, | |
431 get_capabilities()); | |
432 } /* end AddCapabilities */ | |
433 | |
434 | |
435 // capabilities_ptr - pre-checked for NULL | |
436 jvmtiError | |
437 JvmtiEnv::RelinquishCapabilities(const jvmtiCapabilities* capabilities_ptr) { | |
438 JvmtiManageCapabilities::relinquish_capabilities(get_capabilities(), capabilities_ptr, get_capabilities()); | |
439 return JVMTI_ERROR_NONE; | |
440 } /* end RelinquishCapabilities */ | |
441 | |
442 | |
443 // capabilities_ptr - pre-checked for NULL | |
444 jvmtiError | |
445 JvmtiEnv::GetCapabilities(jvmtiCapabilities* capabilities_ptr) { | |
446 JvmtiManageCapabilities::copy_capabilities(get_capabilities(), capabilities_ptr); | |
447 return JVMTI_ERROR_NONE; | |
448 } /* end GetCapabilities */ | |
449 | |
450 // | |
451 // Class Loader Search functions | |
452 // | |
453 | |
454 // segment - pre-checked for NULL | |
455 jvmtiError | |
456 JvmtiEnv::AddToBootstrapClassLoaderSearch(const char* segment) { | |
457 jvmtiPhase phase = get_phase(); | |
458 if (phase == JVMTI_PHASE_ONLOAD) { | |
459 Arguments::append_sysclasspath(segment); | |
460 return JVMTI_ERROR_NONE; | |
1121 | 461 } else if (use_version_1_0_semantics()) { |
462 // This JvmtiEnv requested version 1.0 semantics and this function | |
463 // is only allowed in the ONLOAD phase in version 1.0 so we need to | |
464 // return an error here. | |
465 return JVMTI_ERROR_WRONG_PHASE; | |
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466 } else if (phase == JVMTI_PHASE_LIVE) { |
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467 // The phase is checked by the wrapper that called this function, |
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468 // but this thread could be racing with the thread that is |
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469 // terminating the VM so we check one more time. |
0 | 470 |
471 // create the zip entry | |
472 ClassPathZipEntry* zip_entry = ClassLoader::create_class_path_zip_entry(segment); | |
473 if (zip_entry == NULL) { | |
474 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
475 } | |
476 | |
477 // lock the loader | |
478 Thread* thread = Thread::current(); | |
479 HandleMark hm; | |
480 Handle loader_lock = Handle(thread, SystemDictionary::system_loader_lock()); | |
481 | |
482 ObjectLocker ol(loader_lock, thread); | |
483 | |
484 // add the jar file to the bootclasspath | |
485 if (TraceClassLoading) { | |
486 tty->print_cr("[Opened %s]", zip_entry->name()); | |
487 } | |
488 ClassLoader::add_to_list(zip_entry); | |
489 return JVMTI_ERROR_NONE; | |
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490 } else { |
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491 return JVMTI_ERROR_WRONG_PHASE; |
0 | 492 } |
493 | |
494 } /* end AddToBootstrapClassLoaderSearch */ | |
495 | |
496 | |
497 // segment - pre-checked for NULL | |
498 jvmtiError | |
499 JvmtiEnv::AddToSystemClassLoaderSearch(const char* segment) { | |
500 jvmtiPhase phase = get_phase(); | |
501 | |
502 if (phase == JVMTI_PHASE_ONLOAD) { | |
503 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
504 if (strcmp("java.class.path", p->key()) == 0) { | |
505 p->append_value(segment); | |
506 break; | |
507 } | |
508 } | |
509 return JVMTI_ERROR_NONE; | |
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510 } else if (phase == JVMTI_PHASE_LIVE) { |
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511 // The phase is checked by the wrapper that called this function, |
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512 // but this thread could be racing with the thread that is |
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513 // terminating the VM so we check one more time. |
0 | 514 HandleMark hm; |
515 | |
516 // create the zip entry (which will open the zip file and hence | |
517 // check that the segment is indeed a zip file). | |
518 ClassPathZipEntry* zip_entry = ClassLoader::create_class_path_zip_entry(segment); | |
519 if (zip_entry == NULL) { | |
520 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
521 } | |
522 delete zip_entry; // no longer needed | |
523 | |
524 // lock the loader | |
525 Thread* THREAD = Thread::current(); | |
526 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); | |
527 | |
528 ObjectLocker ol(loader, THREAD); | |
529 | |
530 // need the path as java.lang.String | |
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531 Handle path = java_lang_String::create_from_platform_dependent_str(segment, THREAD); |
0 | 532 if (HAS_PENDING_EXCEPTION) { |
533 CLEAR_PENDING_EXCEPTION; | |
534 return JVMTI_ERROR_INTERNAL; | |
535 } | |
536 | |
537 instanceKlassHandle loader_ik(THREAD, loader->klass()); | |
538 | |
539 // Invoke the appendToClassPathForInstrumentation method - if the method | |
540 // is not found it means the loader doesn't support adding to the class path | |
541 // in the live phase. | |
542 { | |
543 JavaValue res(T_VOID); | |
544 JavaCalls::call_special(&res, | |
545 loader, | |
546 loader_ik, | |
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547 vmSymbols::appendToClassPathForInstrumentation_name(), |
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548 vmSymbols::appendToClassPathForInstrumentation_signature(), |
0 | 549 path, |
550 THREAD); | |
551 if (HAS_PENDING_EXCEPTION) { | |
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552 Symbol* ex_name = PENDING_EXCEPTION->klass()->klass_part()->name(); |
0 | 553 CLEAR_PENDING_EXCEPTION; |
554 | |
555 if (ex_name == vmSymbols::java_lang_NoSuchMethodError()) { | |
556 return JVMTI_ERROR_CLASS_LOADER_UNSUPPORTED; | |
557 } else { | |
558 return JVMTI_ERROR_INTERNAL; | |
559 } | |
560 } | |
561 } | |
562 | |
563 return JVMTI_ERROR_NONE; | |
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564 } else { |
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565 return JVMTI_ERROR_WRONG_PHASE; |
0 | 566 } |
567 } /* end AddToSystemClassLoaderSearch */ | |
568 | |
569 // | |
570 // General functions | |
571 // | |
572 | |
573 // phase_ptr - pre-checked for NULL | |
574 jvmtiError | |
575 JvmtiEnv::GetPhase(jvmtiPhase* phase_ptr) { | |
576 *phase_ptr = get_phase(); | |
577 return JVMTI_ERROR_NONE; | |
578 } /* end GetPhase */ | |
579 | |
580 | |
581 jvmtiError | |
582 JvmtiEnv::DisposeEnvironment() { | |
583 dispose(); | |
584 return JVMTI_ERROR_NONE; | |
585 } /* end DisposeEnvironment */ | |
586 | |
587 | |
588 // data - NULL is a valid value, must be checked | |
589 jvmtiError | |
590 JvmtiEnv::SetEnvironmentLocalStorage(const void* data) { | |
591 set_env_local_storage(data); | |
592 return JVMTI_ERROR_NONE; | |
593 } /* end SetEnvironmentLocalStorage */ | |
594 | |
595 | |
596 // data_ptr - pre-checked for NULL | |
597 jvmtiError | |
598 JvmtiEnv::GetEnvironmentLocalStorage(void** data_ptr) { | |
599 *data_ptr = (void*)get_env_local_storage(); | |
600 return JVMTI_ERROR_NONE; | |
601 } /* end GetEnvironmentLocalStorage */ | |
602 | |
603 // version_ptr - pre-checked for NULL | |
604 jvmtiError | |
605 JvmtiEnv::GetVersionNumber(jint* version_ptr) { | |
606 *version_ptr = JVMTI_VERSION; | |
607 return JVMTI_ERROR_NONE; | |
608 } /* end GetVersionNumber */ | |
609 | |
610 | |
611 // name_ptr - pre-checked for NULL | |
612 jvmtiError | |
613 JvmtiEnv::GetErrorName(jvmtiError error, char** name_ptr) { | |
614 if (error < JVMTI_ERROR_NONE || error > JVMTI_ERROR_MAX) { | |
615 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
616 } | |
617 const char *name = JvmtiUtil::error_name(error); | |
618 if (name == NULL) { | |
619 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
620 } | |
621 size_t len = strlen(name) + 1; | |
622 jvmtiError err = allocate(len, (unsigned char**)name_ptr); | |
623 if (err == JVMTI_ERROR_NONE) { | |
624 memcpy(*name_ptr, name, len); | |
625 } | |
626 return err; | |
627 } /* end GetErrorName */ | |
628 | |
629 | |
630 jvmtiError | |
631 JvmtiEnv::SetVerboseFlag(jvmtiVerboseFlag flag, jboolean value) { | |
632 switch (flag) { | |
633 case JVMTI_VERBOSE_OTHER: | |
634 // ignore | |
635 break; | |
636 case JVMTI_VERBOSE_CLASS: | |
637 TraceClassLoading = value != 0; | |
638 TraceClassUnloading = value != 0; | |
639 break; | |
640 case JVMTI_VERBOSE_GC: | |
641 PrintGC = value != 0; | |
642 break; | |
643 case JVMTI_VERBOSE_JNI: | |
644 PrintJNIResolving = value != 0; | |
645 break; | |
646 default: | |
647 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
648 }; | |
649 return JVMTI_ERROR_NONE; | |
650 } /* end SetVerboseFlag */ | |
651 | |
652 | |
653 // format_ptr - pre-checked for NULL | |
654 jvmtiError | |
655 JvmtiEnv::GetJLocationFormat(jvmtiJlocationFormat* format_ptr) { | |
656 *format_ptr = JVMTI_JLOCATION_JVMBCI; | |
657 return JVMTI_ERROR_NONE; | |
658 } /* end GetJLocationFormat */ | |
659 | |
660 #ifndef JVMTI_KERNEL | |
661 | |
662 // | |
663 // Thread functions | |
664 // | |
665 | |
666 // Threads_lock NOT held | |
667 // thread - NOT pre-checked | |
668 // thread_state_ptr - pre-checked for NULL | |
669 jvmtiError | |
670 JvmtiEnv::GetThreadState(jthread thread, jint* thread_state_ptr) { | |
671 jint state; | |
672 oop thread_oop; | |
673 JavaThread* thr; | |
674 | |
675 if (thread == NULL) { | |
676 thread_oop = JavaThread::current()->threadObj(); | |
677 } else { | |
678 thread_oop = JNIHandles::resolve_external_guard(thread); | |
679 } | |
680 | |
1142 | 681 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) { |
0 | 682 return JVMTI_ERROR_INVALID_THREAD; |
683 } | |
684 | |
685 // get most state bits | |
686 state = (jint)java_lang_Thread::get_thread_status(thread_oop); | |
687 | |
688 // add more state bits | |
689 thr = java_lang_Thread::thread(thread_oop); | |
690 if (thr != NULL) { | |
691 JavaThreadState jts = thr->thread_state(); | |
692 | |
693 if (thr->is_being_ext_suspended()) { | |
694 state |= JVMTI_THREAD_STATE_SUSPENDED; | |
695 } | |
696 if (jts == _thread_in_native) { | |
697 state |= JVMTI_THREAD_STATE_IN_NATIVE; | |
698 } | |
699 OSThread* osThread = thr->osthread(); | |
700 if (osThread != NULL && osThread->interrupted()) { | |
701 state |= JVMTI_THREAD_STATE_INTERRUPTED; | |
702 } | |
703 } | |
704 | |
705 *thread_state_ptr = state; | |
706 return JVMTI_ERROR_NONE; | |
707 } /* end GetThreadState */ | |
708 | |
709 | |
710 // thread_ptr - pre-checked for NULL | |
711 jvmtiError | |
712 JvmtiEnv::GetCurrentThread(jthread* thread_ptr) { | |
713 JavaThread* current_thread = JavaThread::current(); | |
714 *thread_ptr = (jthread)JNIHandles::make_local(current_thread, current_thread->threadObj()); | |
715 return JVMTI_ERROR_NONE; | |
716 } /* end GetCurrentThread */ | |
717 | |
718 | |
719 // threads_count_ptr - pre-checked for NULL | |
720 // threads_ptr - pre-checked for NULL | |
721 jvmtiError | |
722 JvmtiEnv::GetAllThreads(jint* threads_count_ptr, jthread** threads_ptr) { | |
723 int nthreads = 0; | |
724 Handle *thread_objs = NULL; | |
725 ResourceMark rm; | |
726 HandleMark hm; | |
727 | |
728 // enumerate threads (including agent threads) | |
729 ThreadsListEnumerator tle(Thread::current(), true); | |
730 nthreads = tle.num_threads(); | |
731 *threads_count_ptr = nthreads; | |
732 | |
733 if (nthreads == 0) { | |
734 *threads_ptr = NULL; | |
735 return JVMTI_ERROR_NONE; | |
736 } | |
737 | |
738 thread_objs = NEW_RESOURCE_ARRAY(Handle, nthreads); | |
739 NULL_CHECK(thread_objs, JVMTI_ERROR_OUT_OF_MEMORY); | |
740 | |
741 for (int i=0; i < nthreads; i++) { | |
742 thread_objs[i] = Handle(tle.get_threadObj(i)); | |
743 } | |
744 | |
745 // have to make global handles outside of Threads_lock | |
746 jthread *jthreads = new_jthreadArray(nthreads, thread_objs); | |
747 NULL_CHECK(jthreads, JVMTI_ERROR_OUT_OF_MEMORY); | |
748 | |
749 *threads_ptr = jthreads; | |
750 return JVMTI_ERROR_NONE; | |
751 } /* end GetAllThreads */ | |
752 | |
753 | |
754 // Threads_lock NOT held, java_thread not protected by lock | |
755 // java_thread - pre-checked | |
756 jvmtiError | |
757 JvmtiEnv::SuspendThread(JavaThread* java_thread) { | |
758 // don't allow hidden thread suspend request. | |
759 if (java_thread->is_hidden_from_external_view()) { | |
760 return (JVMTI_ERROR_NONE); | |
761 } | |
762 | |
763 { | |
764 MutexLockerEx ml(java_thread->SR_lock(), Mutex::_no_safepoint_check_flag); | |
765 if (java_thread->is_external_suspend()) { | |
766 // don't allow nested external suspend requests. | |
767 return (JVMTI_ERROR_THREAD_SUSPENDED); | |
768 } | |
769 if (java_thread->is_exiting()) { // thread is in the process of exiting | |
770 return (JVMTI_ERROR_THREAD_NOT_ALIVE); | |
771 } | |
772 java_thread->set_external_suspend(); | |
773 } | |
774 | |
775 if (!JvmtiSuspendControl::suspend(java_thread)) { | |
776 // the thread was in the process of exiting | |
777 return (JVMTI_ERROR_THREAD_NOT_ALIVE); | |
778 } | |
779 return JVMTI_ERROR_NONE; | |
780 } /* end SuspendThread */ | |
781 | |
782 | |
783 // request_count - pre-checked to be greater than or equal to 0 | |
784 // request_list - pre-checked for NULL | |
785 // results - pre-checked for NULL | |
786 jvmtiError | |
787 JvmtiEnv::SuspendThreadList(jint request_count, const jthread* request_list, jvmtiError* results) { | |
788 int needSafepoint = 0; // > 0 if we need a safepoint | |
789 for (int i = 0; i < request_count; i++) { | |
790 JavaThread *java_thread = get_JavaThread(request_list[i]); | |
791 if (java_thread == NULL) { | |
792 results[i] = JVMTI_ERROR_INVALID_THREAD; | |
793 continue; | |
794 } | |
795 // the thread has not yet run or has exited (not on threads list) | |
796 if (java_thread->threadObj() == NULL) { | |
797 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
798 continue; | |
799 } | |
800 if (java_lang_Thread::thread(java_thread->threadObj()) == NULL) { | |
801 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
802 continue; | |
803 } | |
804 // don't allow hidden thread suspend request. | |
805 if (java_thread->is_hidden_from_external_view()) { | |
806 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend | |
807 continue; | |
808 } | |
809 | |
810 { | |
811 MutexLockerEx ml(java_thread->SR_lock(), Mutex::_no_safepoint_check_flag); | |
812 if (java_thread->is_external_suspend()) { | |
813 // don't allow nested external suspend requests. | |
814 results[i] = JVMTI_ERROR_THREAD_SUSPENDED; | |
815 continue; | |
816 } | |
817 if (java_thread->is_exiting()) { // thread is in the process of exiting | |
818 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
819 continue; | |
820 } | |
821 java_thread->set_external_suspend(); | |
822 } | |
823 if (java_thread->thread_state() == _thread_in_native) { | |
824 // We need to try and suspend native threads here. Threads in | |
825 // other states will self-suspend on their next transition. | |
826 if (!JvmtiSuspendControl::suspend(java_thread)) { | |
827 // The thread was in the process of exiting. Force another | |
828 // safepoint to make sure that this thread transitions. | |
829 needSafepoint++; | |
830 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
831 continue; | |
832 } | |
833 } else { | |
834 needSafepoint++; | |
835 } | |
836 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend | |
837 } | |
838 if (needSafepoint > 0) { | |
839 VM_ForceSafepoint vfs; | |
840 VMThread::execute(&vfs); | |
841 } | |
842 // per-thread suspend results returned via results parameter | |
843 return JVMTI_ERROR_NONE; | |
844 } /* end SuspendThreadList */ | |
845 | |
846 | |
847 // Threads_lock NOT held, java_thread not protected by lock | |
848 // java_thread - pre-checked | |
849 jvmtiError | |
850 JvmtiEnv::ResumeThread(JavaThread* java_thread) { | |
851 // don't allow hidden thread resume request. | |
852 if (java_thread->is_hidden_from_external_view()) { | |
853 return JVMTI_ERROR_NONE; | |
854 } | |
855 | |
856 if (!java_thread->is_being_ext_suspended()) { | |
857 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
858 } | |
859 | |
860 if (!JvmtiSuspendControl::resume(java_thread)) { | |
861 return JVMTI_ERROR_INTERNAL; | |
862 } | |
863 return JVMTI_ERROR_NONE; | |
864 } /* end ResumeThread */ | |
865 | |
866 | |
867 // request_count - pre-checked to be greater than or equal to 0 | |
868 // request_list - pre-checked for NULL | |
869 // results - pre-checked for NULL | |
870 jvmtiError | |
871 JvmtiEnv::ResumeThreadList(jint request_count, const jthread* request_list, jvmtiError* results) { | |
872 for (int i = 0; i < request_count; i++) { | |
873 JavaThread *java_thread = get_JavaThread(request_list[i]); | |
874 if (java_thread == NULL) { | |
875 results[i] = JVMTI_ERROR_INVALID_THREAD; | |
876 continue; | |
877 } | |
878 // don't allow hidden thread resume request. | |
879 if (java_thread->is_hidden_from_external_view()) { | |
880 results[i] = JVMTI_ERROR_NONE; // indicate successful resume | |
881 continue; | |
882 } | |
883 if (!java_thread->is_being_ext_suspended()) { | |
884 results[i] = JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
885 continue; | |
886 } | |
887 | |
888 if (!JvmtiSuspendControl::resume(java_thread)) { | |
889 results[i] = JVMTI_ERROR_INTERNAL; | |
890 continue; | |
891 } | |
892 | |
893 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend | |
894 } | |
895 // per-thread resume results returned via results parameter | |
896 return JVMTI_ERROR_NONE; | |
897 } /* end ResumeThreadList */ | |
898 | |
899 | |
900 // Threads_lock NOT held, java_thread not protected by lock | |
901 // java_thread - pre-checked | |
902 jvmtiError | |
903 JvmtiEnv::StopThread(JavaThread* java_thread, jobject exception) { | |
904 oop e = JNIHandles::resolve_external_guard(exception); | |
905 NULL_CHECK(e, JVMTI_ERROR_NULL_POINTER); | |
906 | |
907 JavaThread::send_async_exception(java_thread->threadObj(), e); | |
908 | |
909 return JVMTI_ERROR_NONE; | |
910 | |
911 } /* end StopThread */ | |
912 | |
913 | |
914 // Threads_lock NOT held | |
915 // thread - NOT pre-checked | |
916 jvmtiError | |
917 JvmtiEnv::InterruptThread(jthread thread) { | |
918 oop thread_oop = JNIHandles::resolve_external_guard(thread); | |
1142 | 919 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) |
0 | 920 return JVMTI_ERROR_INVALID_THREAD; |
921 | |
922 JavaThread* current_thread = JavaThread::current(); | |
923 | |
924 // Todo: this is a duplicate of JVM_Interrupt; share code in future | |
925 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
926 MutexLockerEx ml(current_thread->threadObj() == thread_oop ? NULL : Threads_lock); | |
927 // We need to re-resolve the java_thread, since a GC might have happened during the | |
928 // acquire of the lock | |
929 | |
930 JavaThread* java_thread = java_lang_Thread::thread(JNIHandles::resolve_external_guard(thread)); | |
931 NULL_CHECK(java_thread, JVMTI_ERROR_THREAD_NOT_ALIVE); | |
932 | |
933 Thread::interrupt(java_thread); | |
934 | |
935 return JVMTI_ERROR_NONE; | |
936 } /* end InterruptThread */ | |
937 | |
938 | |
939 // Threads_lock NOT held | |
940 // thread - NOT pre-checked | |
941 // info_ptr - pre-checked for NULL | |
942 jvmtiError | |
943 JvmtiEnv::GetThreadInfo(jthread thread, jvmtiThreadInfo* info_ptr) { | |
944 ResourceMark rm; | |
945 HandleMark hm; | |
946 | |
947 JavaThread* current_thread = JavaThread::current(); | |
948 | |
949 // if thread is NULL the current thread is used | |
950 oop thread_oop; | |
951 if (thread == NULL) { | |
952 thread_oop = current_thread->threadObj(); | |
953 } else { | |
954 thread_oop = JNIHandles::resolve_external_guard(thread); | |
955 } | |
1142 | 956 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) |
0 | 957 return JVMTI_ERROR_INVALID_THREAD; |
958 | |
959 Handle thread_obj(current_thread, thread_oop); | |
960 typeArrayHandle name; | |
961 ThreadPriority priority; | |
962 Handle thread_group; | |
963 Handle context_class_loader; | |
964 bool is_daemon; | |
965 | |
966 { MutexLocker mu(Threads_lock); | |
967 | |
968 name = typeArrayHandle(current_thread, java_lang_Thread::name(thread_obj())); | |
969 priority = java_lang_Thread::priority(thread_obj()); | |
970 thread_group = Handle(current_thread, java_lang_Thread::threadGroup(thread_obj())); | |
971 is_daemon = java_lang_Thread::is_daemon(thread_obj()); | |
972 | |
973 oop loader = java_lang_Thread::context_class_loader(thread_obj()); | |
974 context_class_loader = Handle(current_thread, loader); | |
975 } | |
976 { const char *n; | |
977 | |
978 if (name() != NULL) { | |
979 n = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length()); | |
980 } else { | |
981 n = UNICODE::as_utf8(NULL, 0); | |
982 } | |
983 | |
984 info_ptr->name = (char *) jvmtiMalloc(strlen(n)+1); | |
985 if (info_ptr->name == NULL) | |
986 return JVMTI_ERROR_OUT_OF_MEMORY; | |
987 | |
988 strcpy(info_ptr->name, n); | |
989 } | |
990 info_ptr->is_daemon = is_daemon; | |
991 info_ptr->priority = priority; | |
992 | |
993 info_ptr->context_class_loader = (context_class_loader.is_null()) ? NULL : | |
994 jni_reference(context_class_loader); | |
995 info_ptr->thread_group = jni_reference(thread_group); | |
996 | |
997 return JVMTI_ERROR_NONE; | |
998 } /* end GetThreadInfo */ | |
999 | |
1000 | |
1001 // Threads_lock NOT held, java_thread not protected by lock | |
1002 // java_thread - pre-checked | |
1003 // owned_monitor_count_ptr - pre-checked for NULL | |
1004 // owned_monitors_ptr - pre-checked for NULL | |
1005 jvmtiError | |
1006 JvmtiEnv::GetOwnedMonitorInfo(JavaThread* java_thread, jint* owned_monitor_count_ptr, jobject** owned_monitors_ptr) { | |
1007 jvmtiError err = JVMTI_ERROR_NONE; | |
1008 JavaThread* calling_thread = JavaThread::current(); | |
1009 | |
1010 // growable array of jvmti monitors info on the C-heap | |
1011 GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list = | |
1012 new (ResourceObj::C_HEAP) GrowableArray<jvmtiMonitorStackDepthInfo*>(1, true); | |
1013 | |
1014 uint32_t debug_bits = 0; | |
1015 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
1016 err = get_owned_monitors(calling_thread, java_thread, owned_monitors_list); | |
1017 } else { | |
1018 // JVMTI get monitors info at safepoint. Do not require target thread to | |
1019 // be suspended. | |
1020 VM_GetOwnedMonitorInfo op(this, calling_thread, java_thread, owned_monitors_list); | |
1021 VMThread::execute(&op); | |
1022 err = op.result(); | |
1023 } | |
1024 jint owned_monitor_count = owned_monitors_list->length(); | |
1025 if (err == JVMTI_ERROR_NONE) { | |
1026 if ((err = allocate(owned_monitor_count * sizeof(jobject *), | |
1027 (unsigned char**)owned_monitors_ptr)) == JVMTI_ERROR_NONE) { | |
1028 // copy into the returned array | |
1029 for (int i = 0; i < owned_monitor_count; i++) { | |
1030 (*owned_monitors_ptr)[i] = | |
1031 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->monitor; | |
1032 } | |
1033 *owned_monitor_count_ptr = owned_monitor_count; | |
1034 } | |
1035 } | |
1036 // clean up. | |
1037 for (int i = 0; i < owned_monitor_count; i++) { | |
1038 deallocate((unsigned char*)owned_monitors_list->at(i)); | |
1039 } | |
1040 delete owned_monitors_list; | |
1041 | |
1042 return err; | |
1043 } /* end GetOwnedMonitorInfo */ | |
1044 | |
1045 | |
1046 // Threads_lock NOT held, java_thread not protected by lock | |
1047 // java_thread - pre-checked | |
1048 // monitor_info_count_ptr - pre-checked for NULL | |
1049 // monitor_info_ptr - pre-checked for NULL | |
1050 jvmtiError | |
1051 JvmtiEnv::GetOwnedMonitorStackDepthInfo(JavaThread* java_thread, jint* monitor_info_count_ptr, jvmtiMonitorStackDepthInfo** monitor_info_ptr) { | |
1052 jvmtiError err = JVMTI_ERROR_NONE; | |
1053 JavaThread* calling_thread = JavaThread::current(); | |
1054 | |
1055 // growable array of jvmti monitors info on the C-heap | |
1056 GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list = | |
1057 new (ResourceObj::C_HEAP) GrowableArray<jvmtiMonitorStackDepthInfo*>(1, true); | |
1058 | |
1059 uint32_t debug_bits = 0; | |
1060 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
1061 err = get_owned_monitors(calling_thread, java_thread, owned_monitors_list); | |
1062 } else { | |
1063 // JVMTI get owned monitors info at safepoint. Do not require target thread to | |
1064 // be suspended. | |
1065 VM_GetOwnedMonitorInfo op(this, calling_thread, java_thread, owned_monitors_list); | |
1066 VMThread::execute(&op); | |
1067 err = op.result(); | |
1068 } | |
1069 | |
1070 jint owned_monitor_count = owned_monitors_list->length(); | |
1071 if (err == JVMTI_ERROR_NONE) { | |
1072 if ((err = allocate(owned_monitor_count * sizeof(jvmtiMonitorStackDepthInfo), | |
1073 (unsigned char**)monitor_info_ptr)) == JVMTI_ERROR_NONE) { | |
1074 // copy to output array. | |
1075 for (int i = 0; i < owned_monitor_count; i++) { | |
1076 (*monitor_info_ptr)[i].monitor = | |
1077 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->monitor; | |
1078 (*monitor_info_ptr)[i].stack_depth = | |
1079 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->stack_depth; | |
1080 } | |
1081 } | |
1082 *monitor_info_count_ptr = owned_monitor_count; | |
1083 } | |
1084 | |
1085 // clean up. | |
1086 for (int i = 0; i < owned_monitor_count; i++) { | |
1087 deallocate((unsigned char*)owned_monitors_list->at(i)); | |
1088 } | |
1089 delete owned_monitors_list; | |
1090 | |
1091 return err; | |
1092 } /* end GetOwnedMonitorStackDepthInfo */ | |
1093 | |
1094 | |
1095 // Threads_lock NOT held, java_thread not protected by lock | |
1096 // java_thread - pre-checked | |
1097 // monitor_ptr - pre-checked for NULL | |
1098 jvmtiError | |
1099 JvmtiEnv::GetCurrentContendedMonitor(JavaThread* java_thread, jobject* monitor_ptr) { | |
1100 jvmtiError err = JVMTI_ERROR_NONE; | |
1101 uint32_t debug_bits = 0; | |
1102 JavaThread* calling_thread = JavaThread::current(); | |
1103 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
1104 err = get_current_contended_monitor(calling_thread, java_thread, monitor_ptr); | |
1105 } else { | |
1106 // get contended monitor information at safepoint. | |
1107 VM_GetCurrentContendedMonitor op(this, calling_thread, java_thread, monitor_ptr); | |
1108 VMThread::execute(&op); | |
1109 err = op.result(); | |
1110 } | |
1111 return err; | |
1112 } /* end GetCurrentContendedMonitor */ | |
1113 | |
1114 | |
1115 // Threads_lock NOT held | |
1116 // thread - NOT pre-checked | |
1117 // proc - pre-checked for NULL | |
1118 // arg - NULL is a valid value, must be checked | |
1119 jvmtiError | |
1120 JvmtiEnv::RunAgentThread(jthread thread, jvmtiStartFunction proc, const void* arg, jint priority) { | |
1121 oop thread_oop = JNIHandles::resolve_external_guard(thread); | |
1142 | 1122 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) { |
0 | 1123 return JVMTI_ERROR_INVALID_THREAD; |
1124 } | |
1125 if (priority < JVMTI_THREAD_MIN_PRIORITY || priority > JVMTI_THREAD_MAX_PRIORITY) { | |
1126 return JVMTI_ERROR_INVALID_PRIORITY; | |
1127 } | |
1128 | |
1129 //Thread-self | |
1130 JavaThread* current_thread = JavaThread::current(); | |
1131 | |
1132 Handle thread_hndl(current_thread, thread_oop); | |
1133 { | |
1134 MutexLocker mu(Threads_lock); // grab Threads_lock | |
1135 | |
1136 JvmtiAgentThread *new_thread = new JvmtiAgentThread(this, proc, arg); | |
1137 | |
1138 // At this point it may be possible that no osthread was created for the | |
1139 // JavaThread due to lack of memory. | |
1140 if (new_thread == NULL || new_thread->osthread() == NULL) { | |
1141 if (new_thread) delete new_thread; | |
1142 return JVMTI_ERROR_OUT_OF_MEMORY; | |
1143 } | |
1144 | |
1145 java_lang_Thread::set_thread(thread_hndl(), new_thread); | |
1146 java_lang_Thread::set_priority(thread_hndl(), (ThreadPriority)priority); | |
1147 java_lang_Thread::set_daemon(thread_hndl()); | |
1148 | |
1149 new_thread->set_threadObj(thread_hndl()); | |
1150 Threads::add(new_thread); | |
1151 Thread::start(new_thread); | |
1152 } // unlock Threads_lock | |
1153 | |
1154 return JVMTI_ERROR_NONE; | |
1155 } /* end RunAgentThread */ | |
1156 | |
1157 // | |
1158 // Thread Group functions | |
1159 // | |
1160 | |
1161 // group_count_ptr - pre-checked for NULL | |
1162 // groups_ptr - pre-checked for NULL | |
1163 jvmtiError | |
1164 JvmtiEnv::GetTopThreadGroups(jint* group_count_ptr, jthreadGroup** groups_ptr) { | |
1165 JavaThread* current_thread = JavaThread::current(); | |
1166 | |
1167 // Only one top level thread group now. | |
1168 *group_count_ptr = 1; | |
1169 | |
1170 // Allocate memory to store global-refs to the thread groups. | |
1171 // Assume this area is freed by caller. | |
1172 *groups_ptr = (jthreadGroup *) jvmtiMalloc((sizeof(jthreadGroup)) * (*group_count_ptr)); | |
1173 | |
1174 NULL_CHECK(*groups_ptr, JVMTI_ERROR_OUT_OF_MEMORY); | |
1175 | |
1176 // Convert oop to Handle, then convert Handle to global-ref. | |
1177 { | |
1178 HandleMark hm(current_thread); | |
1179 Handle system_thread_group(current_thread, Universe::system_thread_group()); | |
1180 *groups_ptr[0] = jni_reference(system_thread_group); | |
1181 } | |
1182 | |
1183 return JVMTI_ERROR_NONE; | |
1184 } /* end GetTopThreadGroups */ | |
1185 | |
1186 | |
1187 // info_ptr - pre-checked for NULL | |
1188 jvmtiError | |
1189 JvmtiEnv::GetThreadGroupInfo(jthreadGroup group, jvmtiThreadGroupInfo* info_ptr) { | |
1190 ResourceMark rm; | |
1191 HandleMark hm; | |
1192 | |
1193 JavaThread* current_thread = JavaThread::current(); | |
1194 | |
1195 Handle group_obj (current_thread, JNIHandles::resolve_external_guard(group)); | |
1196 NULL_CHECK(group_obj(), JVMTI_ERROR_INVALID_THREAD_GROUP); | |
1197 | |
1198 typeArrayHandle name; | |
1199 Handle parent_group; | |
1200 bool is_daemon; | |
1201 ThreadPriority max_priority; | |
1202 | |
1203 { MutexLocker mu(Threads_lock); | |
1204 | |
1205 name = typeArrayHandle(current_thread, | |
1206 java_lang_ThreadGroup::name(group_obj())); | |
1207 parent_group = Handle(current_thread, java_lang_ThreadGroup::parent(group_obj())); | |
1208 is_daemon = java_lang_ThreadGroup::is_daemon(group_obj()); | |
1209 max_priority = java_lang_ThreadGroup::maxPriority(group_obj()); | |
1210 } | |
1211 | |
1212 info_ptr->is_daemon = is_daemon; | |
1213 info_ptr->max_priority = max_priority; | |
1214 info_ptr->parent = jni_reference(parent_group); | |
1215 | |
1216 if (name() != NULL) { | |
1217 const char* n = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length()); | |
1218 info_ptr->name = (char *)jvmtiMalloc(strlen(n)+1); | |
1219 NULL_CHECK(info_ptr->name, JVMTI_ERROR_OUT_OF_MEMORY); | |
1220 strcpy(info_ptr->name, n); | |
1221 } else { | |
1222 info_ptr->name = NULL; | |
1223 } | |
1224 | |
1225 return JVMTI_ERROR_NONE; | |
1226 } /* end GetThreadGroupInfo */ | |
1227 | |
1228 | |
1229 // thread_count_ptr - pre-checked for NULL | |
1230 // threads_ptr - pre-checked for NULL | |
1231 // group_count_ptr - pre-checked for NULL | |
1232 // groups_ptr - pre-checked for NULL | |
1233 jvmtiError | |
1234 JvmtiEnv::GetThreadGroupChildren(jthreadGroup group, jint* thread_count_ptr, jthread** threads_ptr, jint* group_count_ptr, jthreadGroup** groups_ptr) { | |
1235 JavaThread* current_thread = JavaThread::current(); | |
1236 oop group_obj = (oop) JNIHandles::resolve_external_guard(group); | |
1237 NULL_CHECK(group_obj, JVMTI_ERROR_INVALID_THREAD_GROUP); | |
1238 | |
1239 Handle *thread_objs = NULL; | |
1240 Handle *group_objs = NULL; | |
1241 int nthreads = 0; | |
1242 int ngroups = 0; | |
1243 int hidden_threads = 0; | |
1244 | |
1245 ResourceMark rm; | |
1246 HandleMark hm; | |
1247 | |
1248 Handle group_hdl(current_thread, group_obj); | |
1249 | |
1250 { MutexLocker mu(Threads_lock); | |
1251 | |
1252 nthreads = java_lang_ThreadGroup::nthreads(group_hdl()); | |
1253 ngroups = java_lang_ThreadGroup::ngroups(group_hdl()); | |
1254 | |
1255 if (nthreads > 0) { | |
1256 objArrayOop threads = java_lang_ThreadGroup::threads(group_hdl()); | |
1257 assert(nthreads <= threads->length(), "too many threads"); | |
1258 thread_objs = NEW_RESOURCE_ARRAY(Handle,nthreads); | |
1259 for (int i=0, j=0; i<nthreads; i++) { | |
1260 oop thread_obj = threads->obj_at(i); | |
1261 assert(thread_obj != NULL, "thread_obj is NULL"); | |
1262 JavaThread *javathread = java_lang_Thread::thread(thread_obj); | |
1263 // Filter out hidden java threads. | |
1264 if (javathread != NULL && javathread->is_hidden_from_external_view()) { | |
1265 hidden_threads++; | |
1266 continue; | |
1267 } | |
1268 thread_objs[j++] = Handle(current_thread, thread_obj); | |
1269 } | |
1270 nthreads -= hidden_threads; | |
1271 } | |
1272 if (ngroups > 0) { | |
1273 objArrayOop groups = java_lang_ThreadGroup::groups(group_hdl()); | |
1274 assert(ngroups <= groups->length(), "too many threads"); | |
1275 group_objs = NEW_RESOURCE_ARRAY(Handle,ngroups); | |
1276 for (int i=0; i<ngroups; i++) { | |
1277 oop group_obj = groups->obj_at(i); | |
1278 assert(group_obj != NULL, "group_obj != NULL"); | |
1279 group_objs[i] = Handle(current_thread, group_obj); | |
1280 } | |
1281 } | |
1282 } | |
1283 | |
1284 // have to make global handles outside of Threads_lock | |
1285 *group_count_ptr = ngroups; | |
1286 *thread_count_ptr = nthreads; | |
1287 *threads_ptr = new_jthreadArray(nthreads, thread_objs); | |
1288 *groups_ptr = new_jthreadGroupArray(ngroups, group_objs); | |
1289 if ((nthreads > 0) && (*threads_ptr == NULL)) { | |
1290 return JVMTI_ERROR_OUT_OF_MEMORY; | |
1291 } | |
1292 if ((ngroups > 0) && (*groups_ptr == NULL)) { | |
1293 return JVMTI_ERROR_OUT_OF_MEMORY; | |
1294 } | |
1295 | |
1296 return JVMTI_ERROR_NONE; | |
1297 } /* end GetThreadGroupChildren */ | |
1298 | |
1299 | |
1300 // | |
1301 // Stack Frame functions | |
1302 // | |
1303 | |
1304 // Threads_lock NOT held, java_thread not protected by lock | |
1305 // java_thread - pre-checked | |
1306 // max_frame_count - pre-checked to be greater than or equal to 0 | |
1307 // frame_buffer - pre-checked for NULL | |
1308 // count_ptr - pre-checked for NULL | |
1309 jvmtiError | |
1310 JvmtiEnv::GetStackTrace(JavaThread* java_thread, jint start_depth, jint max_frame_count, jvmtiFrameInfo* frame_buffer, jint* count_ptr) { | |
1311 jvmtiError err = JVMTI_ERROR_NONE; | |
1312 uint32_t debug_bits = 0; | |
1313 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
1314 err = get_stack_trace(java_thread, start_depth, max_frame_count, frame_buffer, count_ptr); | |
1315 } else { | |
1316 // JVMTI get stack trace at safepoint. Do not require target thread to | |
1317 // be suspended. | |
1318 VM_GetStackTrace op(this, java_thread, start_depth, max_frame_count, frame_buffer, count_ptr); | |
1319 VMThread::execute(&op); | |
1320 err = op.result(); | |
1321 } | |
1322 | |
1323 return err; | |
1324 } /* end GetStackTrace */ | |
1325 | |
1326 | |
1327 // max_frame_count - pre-checked to be greater than or equal to 0 | |
1328 // stack_info_ptr - pre-checked for NULL | |
1329 // thread_count_ptr - pre-checked for NULL | |
1330 jvmtiError | |
1331 JvmtiEnv::GetAllStackTraces(jint max_frame_count, jvmtiStackInfo** stack_info_ptr, jint* thread_count_ptr) { | |
1332 jvmtiError err = JVMTI_ERROR_NONE; | |
1333 JavaThread* calling_thread = JavaThread::current(); | |
1334 | |
1335 // JVMTI get stack traces at safepoint. | |
1336 VM_GetAllStackTraces op(this, calling_thread, max_frame_count); | |
1337 VMThread::execute(&op); | |
1338 *thread_count_ptr = op.final_thread_count(); | |
1339 *stack_info_ptr = op.stack_info(); | |
1340 err = op.result(); | |
1341 return err; | |
1342 } /* end GetAllStackTraces */ | |
1343 | |
1344 | |
1345 // thread_count - pre-checked to be greater than or equal to 0 | |
1346 // thread_list - pre-checked for NULL | |
1347 // max_frame_count - pre-checked to be greater than or equal to 0 | |
1348 // stack_info_ptr - pre-checked for NULL | |
1349 jvmtiError | |
1350 JvmtiEnv::GetThreadListStackTraces(jint thread_count, const jthread* thread_list, jint max_frame_count, jvmtiStackInfo** stack_info_ptr) { | |
1351 jvmtiError err = JVMTI_ERROR_NONE; | |
1352 // JVMTI get stack traces at safepoint. | |
1353 VM_GetThreadListStackTraces op(this, thread_count, thread_list, max_frame_count); | |
1354 VMThread::execute(&op); | |
1355 err = op.result(); | |
1356 if (err == JVMTI_ERROR_NONE) { | |
1357 *stack_info_ptr = op.stack_info(); | |
1358 } | |
1359 return err; | |
1360 } /* end GetThreadListStackTraces */ | |
1361 | |
1362 | |
1363 // Threads_lock NOT held, java_thread not protected by lock | |
1364 // java_thread - pre-checked | |
1365 // count_ptr - pre-checked for NULL | |
1366 jvmtiError | |
1367 JvmtiEnv::GetFrameCount(JavaThread* java_thread, jint* count_ptr) { | |
1368 jvmtiError err = JVMTI_ERROR_NONE; | |
1369 | |
1370 // retrieve or create JvmtiThreadState. | |
1371 JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread); | |
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1372 if (state == NULL) { |
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1373 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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1374 } |
0 | 1375 uint32_t debug_bits = 0; |
1376 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
1377 err = get_frame_count(state, count_ptr); | |
1378 } else { | |
1379 // get java stack frame count at safepoint. | |
1380 VM_GetFrameCount op(this, state, count_ptr); | |
1381 VMThread::execute(&op); | |
1382 err = op.result(); | |
1383 } | |
1384 return err; | |
1385 } /* end GetFrameCount */ | |
1386 | |
1387 | |
1388 // Threads_lock NOT held, java_thread not protected by lock | |
1389 // java_thread - pre-checked | |
1390 jvmtiError | |
1391 JvmtiEnv::PopFrame(JavaThread* java_thread) { | |
1392 JavaThread* current_thread = JavaThread::current(); | |
1393 HandleMark hm(current_thread); | |
1394 uint32_t debug_bits = 0; | |
1395 | |
609
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1396 // retrieve or create the state |
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1397 JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread); |
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1398 if (state == NULL) { |
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1399 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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1400 } |
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1401 |
0 | 1402 // Check if java_thread is fully suspended |
1403 if (!is_thread_fully_suspended(java_thread, true /* wait for suspend completion */, &debug_bits)) { | |
1404 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
1405 } | |
1406 // Check to see if a PopFrame was already in progress | |
1407 if (java_thread->popframe_condition() != JavaThread::popframe_inactive) { | |
1408 // Probably possible for JVMTI clients to trigger this, but the | |
1409 // JPDA backend shouldn't allow this to happen | |
1410 return JVMTI_ERROR_INTERNAL; | |
1411 } | |
1412 | |
1413 { | |
1414 // Was workaround bug | |
1415 // 4812902: popFrame hangs if the method is waiting at a synchronize | |
1416 // Catch this condition and return an error to avoid hanging. | |
1417 // Now JVMTI spec allows an implementation to bail out with an opaque frame error. | |
1418 OSThread* osThread = java_thread->osthread(); | |
1419 if (osThread->get_state() == MONITOR_WAIT) { | |
1420 return JVMTI_ERROR_OPAQUE_FRAME; | |
1421 } | |
1422 } | |
1423 | |
1424 { | |
1425 ResourceMark rm(current_thread); | |
1426 // Check if there are more than one Java frame in this thread, that the top two frames | |
1427 // are Java (not native) frames, and that there is no intervening VM frame | |
1428 int frame_count = 0; | |
1429 bool is_interpreted[2]; | |
1430 intptr_t *frame_sp[2]; | |
1431 // The 2-nd arg of constructor is needed to stop iterating at java entry frame. | |
1432 for (vframeStream vfs(java_thread, true); !vfs.at_end(); vfs.next()) { | |
1433 methodHandle mh(current_thread, vfs.method()); | |
1434 if (mh->is_native()) return(JVMTI_ERROR_OPAQUE_FRAME); | |
1435 is_interpreted[frame_count] = vfs.is_interpreted_frame(); | |
1436 frame_sp[frame_count] = vfs.frame_id(); | |
1437 if (++frame_count > 1) break; | |
1438 } | |
1439 if (frame_count < 2) { | |
1440 // We haven't found two adjacent non-native Java frames on the top. | |
1441 // There can be two situations here: | |
1442 // 1. There are no more java frames | |
1443 // 2. Two top java frames are separated by non-java native frames | |
1444 if(vframeFor(java_thread, 1) == NULL) { | |
1445 return JVMTI_ERROR_NO_MORE_FRAMES; | |
1446 } else { | |
1447 // Intervening non-java native or VM frames separate java frames. | |
1448 // Current implementation does not support this. See bug #5031735. | |
1449 // In theory it is possible to pop frames in such cases. | |
1450 return JVMTI_ERROR_OPAQUE_FRAME; | |
1451 } | |
1452 } | |
1453 | |
1454 // If any of the top 2 frames is a compiled one, need to deoptimize it | |
1455 for (int i = 0; i < 2; i++) { | |
1456 if (!is_interpreted[i]) { | |
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1457 Deoptimization::deoptimize_frame(java_thread, frame_sp[i]); |
0 | 1458 } |
1459 } | |
1460 | |
1461 // Update the thread state to reflect that the top frame is popped | |
1462 // so that cur_stack_depth is maintained properly and all frameIDs | |
1463 // are invalidated. | |
1464 // The current frame will be popped later when the suspended thread | |
1465 // is resumed and right before returning from VM to Java. | |
1466 // (see call_VM_base() in assembler_<cpu>.cpp). | |
1467 | |
1468 // It's fine to update the thread state here because no JVMTI events | |
1469 // shall be posted for this PopFrame. | |
1470 | |
1471 state->update_for_pop_top_frame(); | |
1472 java_thread->set_popframe_condition(JavaThread::popframe_pending_bit); | |
1473 // Set pending step flag for this popframe and it is cleared when next | |
1474 // step event is posted. | |
1475 state->set_pending_step_for_popframe(); | |
1476 } | |
1477 | |
1478 return JVMTI_ERROR_NONE; | |
1479 } /* end PopFrame */ | |
1480 | |
1481 | |
1482 // Threads_lock NOT held, java_thread not protected by lock | |
1483 // java_thread - pre-checked | |
1484 // java_thread - unchecked | |
1485 // depth - pre-checked as non-negative | |
1486 // method_ptr - pre-checked for NULL | |
1487 // location_ptr - pre-checked for NULL | |
1488 jvmtiError | |
1489 JvmtiEnv::GetFrameLocation(JavaThread* java_thread, jint depth, jmethodID* method_ptr, jlocation* location_ptr) { | |
1490 jvmtiError err = JVMTI_ERROR_NONE; | |
1491 uint32_t debug_bits = 0; | |
1492 | |
1493 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
1494 err = get_frame_location(java_thread, depth, method_ptr, location_ptr); | |
1495 } else { | |
1496 // JVMTI get java stack frame location at safepoint. | |
1497 VM_GetFrameLocation op(this, java_thread, depth, method_ptr, location_ptr); | |
1498 VMThread::execute(&op); | |
1499 err = op.result(); | |
1500 } | |
1501 return err; | |
1502 } /* end GetFrameLocation */ | |
1503 | |
1504 | |
1505 // Threads_lock NOT held, java_thread not protected by lock | |
1506 // java_thread - pre-checked | |
1507 // java_thread - unchecked | |
1508 // depth - pre-checked as non-negative | |
1509 jvmtiError | |
1510 JvmtiEnv::NotifyFramePop(JavaThread* java_thread, jint depth) { | |
1511 ResourceMark rm; | |
1512 uint32_t debug_bits = 0; | |
1513 | |
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1514 JvmtiThreadState *state = JvmtiThreadState::state_for(java_thread); |
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1515 if (state == NULL) { |
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1516 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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1517 } |
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1518 |
0 | 1519 if (!JvmtiEnv::is_thread_fully_suspended(java_thread, true, &debug_bits)) { |
1520 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
1521 } | |
1522 | |
1523 if (TraceJVMTICalls) { | |
1524 JvmtiSuspendControl::print(); | |
1525 } | |
1526 | |
1527 vframe *vf = vframeFor(java_thread, depth); | |
1528 if (vf == NULL) { | |
1529 return JVMTI_ERROR_NO_MORE_FRAMES; | |
1530 } | |
1531 | |
1532 if (!vf->is_java_frame() || ((javaVFrame*) vf)->method()->is_native()) { | |
1533 return JVMTI_ERROR_OPAQUE_FRAME; | |
1534 } | |
1535 | |
1536 assert(vf->frame_pointer() != NULL, "frame pointer mustn't be NULL"); | |
1537 | |
1538 int frame_number = state->count_frames() - depth; | |
1539 state->env_thread_state(this)->set_frame_pop(frame_number); | |
1540 | |
1541 return JVMTI_ERROR_NONE; | |
1542 } /* end NotifyFramePop */ | |
1543 | |
1544 | |
1545 // | |
1546 // Force Early Return functions | |
1547 // | |
1548 | |
1549 // Threads_lock NOT held, java_thread not protected by lock | |
1550 // java_thread - pre-checked | |
1551 jvmtiError | |
1552 JvmtiEnv::ForceEarlyReturnObject(JavaThread* java_thread, jobject value) { | |
1553 jvalue val; | |
1554 val.l = value; | |
1555 return force_early_return(java_thread, val, atos); | |
1556 } /* end ForceEarlyReturnObject */ | |
1557 | |
1558 | |
1559 // Threads_lock NOT held, java_thread not protected by lock | |
1560 // java_thread - pre-checked | |
1561 jvmtiError | |
1562 JvmtiEnv::ForceEarlyReturnInt(JavaThread* java_thread, jint value) { | |
1563 jvalue val; | |
1564 val.i = value; | |
1565 return force_early_return(java_thread, val, itos); | |
1566 } /* end ForceEarlyReturnInt */ | |
1567 | |
1568 | |
1569 // Threads_lock NOT held, java_thread not protected by lock | |
1570 // java_thread - pre-checked | |
1571 jvmtiError | |
1572 JvmtiEnv::ForceEarlyReturnLong(JavaThread* java_thread, jlong value) { | |
1573 jvalue val; | |
1574 val.j = value; | |
1575 return force_early_return(java_thread, val, ltos); | |
1576 } /* end ForceEarlyReturnLong */ | |
1577 | |
1578 | |
1579 // Threads_lock NOT held, java_thread not protected by lock | |
1580 // java_thread - pre-checked | |
1581 jvmtiError | |
1582 JvmtiEnv::ForceEarlyReturnFloat(JavaThread* java_thread, jfloat value) { | |
1583 jvalue val; | |
1584 val.f = value; | |
1585 return force_early_return(java_thread, val, ftos); | |
1586 } /* end ForceEarlyReturnFloat */ | |
1587 | |
1588 | |
1589 // Threads_lock NOT held, java_thread not protected by lock | |
1590 // java_thread - pre-checked | |
1591 jvmtiError | |
1592 JvmtiEnv::ForceEarlyReturnDouble(JavaThread* java_thread, jdouble value) { | |
1593 jvalue val; | |
1594 val.d = value; | |
1595 return force_early_return(java_thread, val, dtos); | |
1596 } /* end ForceEarlyReturnDouble */ | |
1597 | |
1598 | |
1599 // Threads_lock NOT held, java_thread not protected by lock | |
1600 // java_thread - pre-checked | |
1601 jvmtiError | |
1602 JvmtiEnv::ForceEarlyReturnVoid(JavaThread* java_thread) { | |
1603 jvalue val; | |
1604 val.j = 0L; | |
1605 return force_early_return(java_thread, val, vtos); | |
1606 } /* end ForceEarlyReturnVoid */ | |
1607 | |
1608 | |
1609 // | |
1610 // Heap functions | |
1611 // | |
1612 | |
1613 // klass - NULL is a valid value, must be checked | |
1614 // initial_object - NULL is a valid value, must be checked | |
1615 // callbacks - pre-checked for NULL | |
1616 // user_data - NULL is a valid value, must be checked | |
1617 jvmtiError | |
1618 JvmtiEnv::FollowReferences(jint heap_filter, jclass klass, jobject initial_object, const jvmtiHeapCallbacks* callbacks, const void* user_data) { | |
1619 // check klass if provided | |
1620 klassOop k_oop = NULL; | |
1621 if (klass != NULL) { | |
1622 oop k_mirror = JNIHandles::resolve_external_guard(klass); | |
1623 if (k_mirror == NULL) { | |
1624 return JVMTI_ERROR_INVALID_CLASS; | |
1625 } | |
1626 if (java_lang_Class::is_primitive(k_mirror)) { | |
1627 return JVMTI_ERROR_NONE; | |
1628 } | |
1629 k_oop = java_lang_Class::as_klassOop(k_mirror); | |
1630 if (k_oop == NULL) { | |
1631 return JVMTI_ERROR_INVALID_CLASS; | |
1632 } | |
1633 } | |
1634 | |
1635 Thread *thread = Thread::current(); | |
1636 HandleMark hm(thread); | |
1637 KlassHandle kh (thread, k_oop); | |
1638 | |
1639 TraceTime t("FollowReferences", TraceJVMTIObjectTagging); | |
1640 JvmtiTagMap::tag_map_for(this)->follow_references(heap_filter, kh, initial_object, callbacks, user_data); | |
1641 return JVMTI_ERROR_NONE; | |
1642 } /* end FollowReferences */ | |
1643 | |
1644 | |
1645 // klass - NULL is a valid value, must be checked | |
1646 // callbacks - pre-checked for NULL | |
1647 // user_data - NULL is a valid value, must be checked | |
1648 jvmtiError | |
1649 JvmtiEnv::IterateThroughHeap(jint heap_filter, jclass klass, const jvmtiHeapCallbacks* callbacks, const void* user_data) { | |
1650 // check klass if provided | |
1651 klassOop k_oop = NULL; | |
1652 if (klass != NULL) { | |
1653 oop k_mirror = JNIHandles::resolve_external_guard(klass); | |
1654 if (k_mirror == NULL) { | |
1655 return JVMTI_ERROR_INVALID_CLASS; | |
1656 } | |
1657 if (java_lang_Class::is_primitive(k_mirror)) { | |
1658 return JVMTI_ERROR_NONE; | |
1659 } | |
1660 k_oop = java_lang_Class::as_klassOop(k_mirror); | |
1661 if (k_oop == NULL) { | |
1662 return JVMTI_ERROR_INVALID_CLASS; | |
1663 } | |
1664 } | |
1665 | |
1666 Thread *thread = Thread::current(); | |
1667 HandleMark hm(thread); | |
1668 KlassHandle kh (thread, k_oop); | |
1669 | |
1670 TraceTime t("IterateThroughHeap", TraceJVMTIObjectTagging); | |
1671 JvmtiTagMap::tag_map_for(this)->iterate_through_heap(heap_filter, kh, callbacks, user_data); | |
1672 return JVMTI_ERROR_NONE; | |
1673 } /* end IterateThroughHeap */ | |
1674 | |
1675 | |
1676 // tag_ptr - pre-checked for NULL | |
1677 jvmtiError | |
1678 JvmtiEnv::GetTag(jobject object, jlong* tag_ptr) { | |
1679 oop o = JNIHandles::resolve_external_guard(object); | |
1680 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
1681 *tag_ptr = JvmtiTagMap::tag_map_for(this)->get_tag(object); | |
1682 return JVMTI_ERROR_NONE; | |
1683 } /* end GetTag */ | |
1684 | |
1685 | |
1686 jvmtiError | |
1687 JvmtiEnv::SetTag(jobject object, jlong tag) { | |
1688 oop o = JNIHandles::resolve_external_guard(object); | |
1689 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
1690 JvmtiTagMap::tag_map_for(this)->set_tag(object, tag); | |
1691 return JVMTI_ERROR_NONE; | |
1692 } /* end SetTag */ | |
1693 | |
1694 | |
1695 // tag_count - pre-checked to be greater than or equal to 0 | |
1696 // tags - pre-checked for NULL | |
1697 // count_ptr - pre-checked for NULL | |
1698 // object_result_ptr - NULL is a valid value, must be checked | |
1699 // tag_result_ptr - NULL is a valid value, must be checked | |
1700 jvmtiError | |
1701 JvmtiEnv::GetObjectsWithTags(jint tag_count, const jlong* tags, jint* count_ptr, jobject** object_result_ptr, jlong** tag_result_ptr) { | |
1702 TraceTime t("GetObjectsWithTags", TraceJVMTIObjectTagging); | |
1703 return JvmtiTagMap::tag_map_for(this)->get_objects_with_tags((jlong*)tags, tag_count, count_ptr, object_result_ptr, tag_result_ptr); | |
1704 } /* end GetObjectsWithTags */ | |
1705 | |
1706 | |
1707 jvmtiError | |
1708 JvmtiEnv::ForceGarbageCollection() { | |
1709 Universe::heap()->collect(GCCause::_jvmti_force_gc); | |
1710 return JVMTI_ERROR_NONE; | |
1711 } /* end ForceGarbageCollection */ | |
1712 | |
1713 | |
1714 // | |
1715 // Heap (1.0) functions | |
1716 // | |
1717 | |
1718 // object_reference_callback - pre-checked for NULL | |
1719 // user_data - NULL is a valid value, must be checked | |
1720 jvmtiError | |
1721 JvmtiEnv::IterateOverObjectsReachableFromObject(jobject object, jvmtiObjectReferenceCallback object_reference_callback, const void* user_data) { | |
1722 oop o = JNIHandles::resolve_external_guard(object); | |
1723 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
1724 JvmtiTagMap::tag_map_for(this)->iterate_over_objects_reachable_from_object(object, object_reference_callback, user_data); | |
1725 return JVMTI_ERROR_NONE; | |
1726 } /* end IterateOverObjectsReachableFromObject */ | |
1727 | |
1728 | |
1729 // heap_root_callback - NULL is a valid value, must be checked | |
1730 // stack_ref_callback - NULL is a valid value, must be checked | |
1731 // object_ref_callback - NULL is a valid value, must be checked | |
1732 // user_data - NULL is a valid value, must be checked | |
1733 jvmtiError | |
1734 JvmtiEnv::IterateOverReachableObjects(jvmtiHeapRootCallback heap_root_callback, jvmtiStackReferenceCallback stack_ref_callback, jvmtiObjectReferenceCallback object_ref_callback, const void* user_data) { | |
1735 TraceTime t("IterateOverReachableObjects", TraceJVMTIObjectTagging); | |
1736 JvmtiTagMap::tag_map_for(this)->iterate_over_reachable_objects(heap_root_callback, stack_ref_callback, object_ref_callback, user_data); | |
1737 return JVMTI_ERROR_NONE; | |
1738 } /* end IterateOverReachableObjects */ | |
1739 | |
1740 | |
1741 // heap_object_callback - pre-checked for NULL | |
1742 // user_data - NULL is a valid value, must be checked | |
1743 jvmtiError | |
1744 JvmtiEnv::IterateOverHeap(jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) { | |
1745 TraceTime t("IterateOverHeap", TraceJVMTIObjectTagging); | |
1746 Thread *thread = Thread::current(); | |
1747 HandleMark hm(thread); | |
1748 JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, KlassHandle(), heap_object_callback, user_data); | |
1749 return JVMTI_ERROR_NONE; | |
1750 } /* end IterateOverHeap */ | |
1751 | |
1752 | |
1753 // k_mirror - may be primitive, this must be checked | |
1754 // heap_object_callback - pre-checked for NULL | |
1755 // user_data - NULL is a valid value, must be checked | |
1756 jvmtiError | |
1757 JvmtiEnv::IterateOverInstancesOfClass(oop k_mirror, jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) { | |
1758 if (java_lang_Class::is_primitive(k_mirror)) { | |
1759 // DO PRIMITIVE CLASS PROCESSING | |
1760 return JVMTI_ERROR_NONE; | |
1761 } | |
1762 klassOop k_oop = java_lang_Class::as_klassOop(k_mirror); | |
1763 if (k_oop == NULL) { | |
1764 return JVMTI_ERROR_INVALID_CLASS; | |
1765 } | |
1766 Thread *thread = Thread::current(); | |
1767 HandleMark hm(thread); | |
1768 KlassHandle klass (thread, k_oop); | |
1769 TraceTime t("IterateOverInstancesOfClass", TraceJVMTIObjectTagging); | |
1770 JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, klass, heap_object_callback, user_data); | |
1771 return JVMTI_ERROR_NONE; | |
1772 } /* end IterateOverInstancesOfClass */ | |
1773 | |
1774 | |
1775 // | |
1776 // Local Variable functions | |
1777 // | |
1778 | |
1779 // Threads_lock NOT held, java_thread not protected by lock | |
1780 // java_thread - pre-checked | |
1781 // java_thread - unchecked | |
1782 // depth - pre-checked as non-negative | |
1783 // value_ptr - pre-checked for NULL | |
1784 jvmtiError | |
1785 JvmtiEnv::GetLocalObject(JavaThread* java_thread, jint depth, jint slot, jobject* value_ptr) { | |
1786 JavaThread* current_thread = JavaThread::current(); | |
1787 // rm object is created to clean up the javaVFrame created in | |
1788 // doit_prologue(), but after doit() is finished with it. | |
1789 ResourceMark rm(current_thread); | |
1790 | |
1791 VM_GetOrSetLocal op(java_thread, current_thread, depth, slot); | |
1792 VMThread::execute(&op); | |
1793 jvmtiError err = op.result(); | |
1794 if (err != JVMTI_ERROR_NONE) { | |
1795 return err; | |
1796 } else { | |
1797 *value_ptr = op.value().l; | |
1798 return JVMTI_ERROR_NONE; | |
1799 } | |
1800 } /* end GetLocalObject */ | |
1801 | |
2019 | 1802 // Threads_lock NOT held, java_thread not protected by lock |
1803 // java_thread - pre-checked | |
1804 // java_thread - unchecked | |
1805 // depth - pre-checked as non-negative | |
1806 // value - pre-checked for NULL | |
1807 jvmtiError | |
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1808 JvmtiEnv::GetLocalInstance(JavaThread* java_thread, jint depth, jobject* value_ptr){ |
2019 | 1809 JavaThread* current_thread = JavaThread::current(); |
1810 // rm object is created to clean up the javaVFrame created in | |
1811 // doit_prologue(), but after doit() is finished with it. | |
1812 ResourceMark rm(current_thread); | |
1813 | |
1814 VM_GetReceiver op(java_thread, current_thread, depth); | |
1815 VMThread::execute(&op); | |
1816 jvmtiError err = op.result(); | |
1817 if (err != JVMTI_ERROR_NONE) { | |
1818 return err; | |
1819 } else { | |
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1820 *value_ptr = op.value().l; |
2019 | 1821 return JVMTI_ERROR_NONE; |
1822 } | |
1823 } /* end GetLocalInstance */ | |
1824 | |
0 | 1825 |
1826 // Threads_lock NOT held, java_thread not protected by lock | |
1827 // java_thread - pre-checked | |
1828 // java_thread - unchecked | |
1829 // depth - pre-checked as non-negative | |
1830 // value_ptr - pre-checked for NULL | |
1831 jvmtiError | |
1832 JvmtiEnv::GetLocalInt(JavaThread* java_thread, jint depth, jint slot, jint* value_ptr) { | |
1833 // rm object is created to clean up the javaVFrame created in | |
1834 // doit_prologue(), but after doit() is finished with it. | |
1835 ResourceMark rm; | |
1836 | |
1837 VM_GetOrSetLocal op(java_thread, depth, slot, T_INT); | |
1838 VMThread::execute(&op); | |
1839 *value_ptr = op.value().i; | |
1840 return op.result(); | |
1841 } /* end GetLocalInt */ | |
1842 | |
1843 | |
1844 // Threads_lock NOT held, java_thread not protected by lock | |
1845 // java_thread - pre-checked | |
1846 // java_thread - unchecked | |
1847 // depth - pre-checked as non-negative | |
1848 // value_ptr - pre-checked for NULL | |
1849 jvmtiError | |
1850 JvmtiEnv::GetLocalLong(JavaThread* java_thread, jint depth, jint slot, jlong* value_ptr) { | |
1851 // rm object is created to clean up the javaVFrame created in | |
1852 // doit_prologue(), but after doit() is finished with it. | |
1853 ResourceMark rm; | |
1854 | |
1855 VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG); | |
1856 VMThread::execute(&op); | |
1857 *value_ptr = op.value().j; | |
1858 return op.result(); | |
1859 } /* end GetLocalLong */ | |
1860 | |
1861 | |
1862 // Threads_lock NOT held, java_thread not protected by lock | |
1863 // java_thread - pre-checked | |
1864 // java_thread - unchecked | |
1865 // depth - pre-checked as non-negative | |
1866 // value_ptr - pre-checked for NULL | |
1867 jvmtiError | |
1868 JvmtiEnv::GetLocalFloat(JavaThread* java_thread, jint depth, jint slot, jfloat* value_ptr) { | |
1869 // rm object is created to clean up the javaVFrame created in | |
1870 // doit_prologue(), but after doit() is finished with it. | |
1871 ResourceMark rm; | |
1872 | |
1873 VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT); | |
1874 VMThread::execute(&op); | |
1875 *value_ptr = op.value().f; | |
1876 return op.result(); | |
1877 } /* end GetLocalFloat */ | |
1878 | |
1879 | |
1880 // Threads_lock NOT held, java_thread not protected by lock | |
1881 // java_thread - pre-checked | |
1882 // java_thread - unchecked | |
1883 // depth - pre-checked as non-negative | |
1884 // value_ptr - pre-checked for NULL | |
1885 jvmtiError | |
1886 JvmtiEnv::GetLocalDouble(JavaThread* java_thread, jint depth, jint slot, jdouble* value_ptr) { | |
1887 // rm object is created to clean up the javaVFrame created in | |
1888 // doit_prologue(), but after doit() is finished with it. | |
1889 ResourceMark rm; | |
1890 | |
1891 VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE); | |
1892 VMThread::execute(&op); | |
1893 *value_ptr = op.value().d; | |
1894 return op.result(); | |
1895 } /* end GetLocalDouble */ | |
1896 | |
1897 | |
1898 // Threads_lock NOT held, java_thread not protected by lock | |
1899 // java_thread - pre-checked | |
1900 // java_thread - unchecked | |
1901 // depth - pre-checked as non-negative | |
1902 jvmtiError | |
1903 JvmtiEnv::SetLocalObject(JavaThread* java_thread, jint depth, jint slot, jobject value) { | |
1904 // rm object is created to clean up the javaVFrame created in | |
1905 // doit_prologue(), but after doit() is finished with it. | |
1906 ResourceMark rm; | |
1907 jvalue val; | |
1908 val.l = value; | |
1909 VM_GetOrSetLocal op(java_thread, depth, slot, T_OBJECT, val); | |
1910 VMThread::execute(&op); | |
1911 return op.result(); | |
1912 } /* end SetLocalObject */ | |
1913 | |
1914 | |
1915 // Threads_lock NOT held, java_thread not protected by lock | |
1916 // java_thread - pre-checked | |
1917 // java_thread - unchecked | |
1918 // depth - pre-checked as non-negative | |
1919 jvmtiError | |
1920 JvmtiEnv::SetLocalInt(JavaThread* java_thread, jint depth, jint slot, jint value) { | |
1921 // rm object is created to clean up the javaVFrame created in | |
1922 // doit_prologue(), but after doit() is finished with it. | |
1923 ResourceMark rm; | |
1924 jvalue val; | |
1925 val.i = value; | |
1926 VM_GetOrSetLocal op(java_thread, depth, slot, T_INT, val); | |
1927 VMThread::execute(&op); | |
1928 return op.result(); | |
1929 } /* end SetLocalInt */ | |
1930 | |
1931 | |
1932 // Threads_lock NOT held, java_thread not protected by lock | |
1933 // java_thread - pre-checked | |
1934 // java_thread - unchecked | |
1935 // depth - pre-checked as non-negative | |
1936 jvmtiError | |
1937 JvmtiEnv::SetLocalLong(JavaThread* java_thread, jint depth, jint slot, jlong value) { | |
1938 // rm object is created to clean up the javaVFrame created in | |
1939 // doit_prologue(), but after doit() is finished with it. | |
1940 ResourceMark rm; | |
1941 jvalue val; | |
1942 val.j = value; | |
1943 VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG, val); | |
1944 VMThread::execute(&op); | |
1945 return op.result(); | |
1946 } /* end SetLocalLong */ | |
1947 | |
1948 | |
1949 // Threads_lock NOT held, java_thread not protected by lock | |
1950 // java_thread - pre-checked | |
1951 // java_thread - unchecked | |
1952 // depth - pre-checked as non-negative | |
1953 jvmtiError | |
1954 JvmtiEnv::SetLocalFloat(JavaThread* java_thread, jint depth, jint slot, jfloat value) { | |
1955 // rm object is created to clean up the javaVFrame created in | |
1956 // doit_prologue(), but after doit() is finished with it. | |
1957 ResourceMark rm; | |
1958 jvalue val; | |
1959 val.f = value; | |
1960 VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT, val); | |
1961 VMThread::execute(&op); | |
1962 return op.result(); | |
1963 } /* end SetLocalFloat */ | |
1964 | |
1965 | |
1966 // Threads_lock NOT held, java_thread not protected by lock | |
1967 // java_thread - pre-checked | |
1968 // java_thread - unchecked | |
1969 // depth - pre-checked as non-negative | |
1970 jvmtiError | |
1971 JvmtiEnv::SetLocalDouble(JavaThread* java_thread, jint depth, jint slot, jdouble value) { | |
1972 // rm object is created to clean up the javaVFrame created in | |
1973 // doit_prologue(), but after doit() is finished with it. | |
1974 ResourceMark rm; | |
1975 jvalue val; | |
1976 val.d = value; | |
1977 VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE, val); | |
1978 VMThread::execute(&op); | |
1979 return op.result(); | |
1980 } /* end SetLocalDouble */ | |
1981 | |
1982 | |
1983 // | |
1984 // Breakpoint functions | |
1985 // | |
1986 | |
1987 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
1988 jvmtiError | |
1989 JvmtiEnv::SetBreakpoint(methodOop method_oop, jlocation location) { | |
1990 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
1991 if (location < 0) { // simple invalid location check first | |
1992 return JVMTI_ERROR_INVALID_LOCATION; | |
1993 } | |
1994 // verify that the breakpoint is not past the end of the method | |
1995 if (location >= (jlocation) method_oop->code_size()) { | |
1996 return JVMTI_ERROR_INVALID_LOCATION; | |
1997 } | |
1998 | |
1999 ResourceMark rm; | |
2000 JvmtiBreakpoint bp(method_oop, location); | |
2001 JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints(); | |
2002 if (jvmti_breakpoints.set(bp) == JVMTI_ERROR_DUPLICATE) | |
2003 return JVMTI_ERROR_DUPLICATE; | |
2004 | |
2005 if (TraceJVMTICalls) { | |
2006 jvmti_breakpoints.print(); | |
2007 } | |
2008 | |
2009 return JVMTI_ERROR_NONE; | |
2010 } /* end SetBreakpoint */ | |
2011 | |
2012 | |
2013 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2014 jvmtiError | |
2015 JvmtiEnv::ClearBreakpoint(methodOop method_oop, jlocation location) { | |
2016 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2017 | |
2018 if (location < 0) { // simple invalid location check first | |
2019 return JVMTI_ERROR_INVALID_LOCATION; | |
2020 } | |
2021 | |
2022 // verify that the breakpoint is not past the end of the method | |
2023 if (location >= (jlocation) method_oop->code_size()) { | |
2024 return JVMTI_ERROR_INVALID_LOCATION; | |
2025 } | |
2026 | |
2027 JvmtiBreakpoint bp(method_oop, location); | |
2028 | |
2029 JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints(); | |
2030 if (jvmti_breakpoints.clear(bp) == JVMTI_ERROR_NOT_FOUND) | |
2031 return JVMTI_ERROR_NOT_FOUND; | |
2032 | |
2033 if (TraceJVMTICalls) { | |
2034 jvmti_breakpoints.print(); | |
2035 } | |
2036 | |
2037 return JVMTI_ERROR_NONE; | |
2038 } /* end ClearBreakpoint */ | |
2039 | |
2040 | |
2041 // | |
2042 // Watched Field functions | |
2043 // | |
2044 | |
2045 jvmtiError | |
2046 JvmtiEnv::SetFieldAccessWatch(fieldDescriptor* fdesc_ptr) { | |
2047 // make sure we haven't set this watch before | |
2048 if (fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_DUPLICATE; | |
2049 fdesc_ptr->set_is_field_access_watched(true); | |
2050 | |
2051 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, true); | |
2052 | |
2053 return JVMTI_ERROR_NONE; | |
2054 } /* end SetFieldAccessWatch */ | |
2055 | |
2056 | |
2057 jvmtiError | |
2058 JvmtiEnv::ClearFieldAccessWatch(fieldDescriptor* fdesc_ptr) { | |
2059 // make sure we have a watch to clear | |
2060 if (!fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_NOT_FOUND; | |
2061 fdesc_ptr->set_is_field_access_watched(false); | |
2062 | |
2063 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, false); | |
2064 | |
2065 return JVMTI_ERROR_NONE; | |
2066 } /* end ClearFieldAccessWatch */ | |
2067 | |
2068 | |
2069 jvmtiError | |
2070 JvmtiEnv::SetFieldModificationWatch(fieldDescriptor* fdesc_ptr) { | |
2071 // make sure we haven't set this watch before | |
2072 if (fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_DUPLICATE; | |
2073 fdesc_ptr->set_is_field_modification_watched(true); | |
2074 | |
2075 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, true); | |
2076 | |
2077 return JVMTI_ERROR_NONE; | |
2078 } /* end SetFieldModificationWatch */ | |
2079 | |
2080 | |
2081 jvmtiError | |
2082 JvmtiEnv::ClearFieldModificationWatch(fieldDescriptor* fdesc_ptr) { | |
2083 // make sure we have a watch to clear | |
2084 if (!fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_NOT_FOUND; | |
2085 fdesc_ptr->set_is_field_modification_watched(false); | |
2086 | |
2087 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, false); | |
2088 | |
2089 return JVMTI_ERROR_NONE; | |
2090 } /* end ClearFieldModificationWatch */ | |
2091 | |
2092 // | |
2093 // Class functions | |
2094 // | |
2095 | |
2096 | |
2097 // k_mirror - may be primitive, this must be checked | |
2098 // signature_ptr - NULL is a valid value, must be checked | |
2099 // generic_ptr - NULL is a valid value, must be checked | |
2100 jvmtiError | |
2101 JvmtiEnv::GetClassSignature(oop k_mirror, char** signature_ptr, char** generic_ptr) { | |
2102 ResourceMark rm; | |
2103 bool isPrimitive = java_lang_Class::is_primitive(k_mirror); | |
2104 klassOop k = NULL; | |
2105 if (!isPrimitive) { | |
2106 k = java_lang_Class::as_klassOop(k_mirror); | |
2107 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
2108 } | |
2109 if (signature_ptr != NULL) { | |
2110 char* result = NULL; | |
2111 if (isPrimitive) { | |
2112 char tchar = type2char(java_lang_Class::primitive_type(k_mirror)); | |
2113 result = (char*) jvmtiMalloc(2); | |
2114 result[0] = tchar; | |
2115 result[1] = '\0'; | |
2116 } else { | |
2117 const char* class_sig = Klass::cast(k)->signature_name(); | |
2118 result = (char *) jvmtiMalloc(strlen(class_sig)+1); | |
2119 strcpy(result, class_sig); | |
2120 } | |
2121 *signature_ptr = result; | |
2122 } | |
2123 if (generic_ptr != NULL) { | |
2124 *generic_ptr = NULL; | |
2125 if (!isPrimitive && Klass::cast(k)->oop_is_instance()) { | |
2177
3582bf76420e
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diff
changeset
|
2126 Symbol* soo = instanceKlass::cast(k)->generic_signature(); |
0 | 2127 if (soo != NULL) { |
2128 const char *gen_sig = soo->as_C_string(); | |
2129 if (gen_sig != NULL) { | |
2130 char* gen_result; | |
2131 jvmtiError err = allocate(strlen(gen_sig) + 1, | |
2132 (unsigned char **)&gen_result); | |
2133 if (err != JVMTI_ERROR_NONE) { | |
2134 return err; | |
2135 } | |
2136 strcpy(gen_result, gen_sig); | |
2137 *generic_ptr = gen_result; | |
2138 } | |
2139 } | |
2140 } | |
2141 } | |
2142 return JVMTI_ERROR_NONE; | |
2143 } /* end GetClassSignature */ | |
2144 | |
2145 | |
2146 // k_mirror - may be primitive, this must be checked | |
2147 // status_ptr - pre-checked for NULL | |
2148 jvmtiError | |
2149 JvmtiEnv::GetClassStatus(oop k_mirror, jint* status_ptr) { | |
2150 jint result = 0; | |
2151 if (java_lang_Class::is_primitive(k_mirror)) { | |
2152 result |= JVMTI_CLASS_STATUS_PRIMITIVE; | |
2153 } else { | |
2154 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2155 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
2156 result = Klass::cast(k)->jvmti_class_status(); | |
2157 } | |
2158 *status_ptr = result; | |
2159 | |
2160 return JVMTI_ERROR_NONE; | |
2161 } /* end GetClassStatus */ | |
2162 | |
2163 | |
2164 // k_mirror - may be primitive, this must be checked | |
2165 // source_name_ptr - pre-checked for NULL | |
2166 jvmtiError | |
2167 JvmtiEnv::GetSourceFileName(oop k_mirror, char** source_name_ptr) { | |
2168 if (java_lang_Class::is_primitive(k_mirror)) { | |
2169 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2170 } | |
2171 klassOop k_klass = java_lang_Class::as_klassOop(k_mirror); | |
2172 NULL_CHECK(k_klass, JVMTI_ERROR_INVALID_CLASS); | |
2173 | |
2174 if (!Klass::cast(k_klass)->oop_is_instance()) { | |
2175 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2176 } | |
2177 | |
2177
3582bf76420e
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2100
diff
changeset
|
2178 Symbol* sfnOop = instanceKlass::cast(k_klass)->source_file_name(); |
0 | 2179 NULL_CHECK(sfnOop, JVMTI_ERROR_ABSENT_INFORMATION); |
2180 { | |
2181 JavaThread* current_thread = JavaThread::current(); | |
2182 ResourceMark rm(current_thread); | |
2183 const char* sfncp = (const char*) sfnOop->as_C_string(); | |
2184 *source_name_ptr = (char *) jvmtiMalloc(strlen(sfncp)+1); | |
2185 strcpy(*source_name_ptr, sfncp); | |
2186 } | |
2187 | |
2188 return JVMTI_ERROR_NONE; | |
2189 } /* end GetSourceFileName */ | |
2190 | |
2191 | |
2192 // k_mirror - may be primitive, this must be checked | |
2193 // modifiers_ptr - pre-checked for NULL | |
2194 jvmtiError | |
2195 JvmtiEnv::GetClassModifiers(oop k_mirror, jint* modifiers_ptr) { | |
2196 JavaThread* current_thread = JavaThread::current(); | |
2197 jint result = 0; | |
2198 if (!java_lang_Class::is_primitive(k_mirror)) { | |
2199 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2200 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
2201 assert((Klass::cast(k)->oop_is_instance() || Klass::cast(k)->oop_is_array()), "should be an instance or an array klass"); | |
2202 result = Klass::cast(k)->compute_modifier_flags(current_thread); | |
2203 JavaThread* THREAD = current_thread; // pass to macros | |
2204 if (HAS_PENDING_EXCEPTION) { | |
2205 CLEAR_PENDING_EXCEPTION; | |
2206 return JVMTI_ERROR_INTERNAL; | |
2207 }; | |
2208 | |
2209 // Reset the deleted ACC_SUPER bit ( deleted in compute_modifier_flags()). | |
2210 if(Klass::cast(k)->is_super()) { | |
2211 result |= JVM_ACC_SUPER; | |
2212 } | |
2213 } else { | |
2214 result = (JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC); | |
2215 } | |
2216 *modifiers_ptr = result; | |
2217 | |
2218 return JVMTI_ERROR_NONE; | |
2219 } /* end GetClassModifiers */ | |
2220 | |
2221 | |
2222 // k_mirror - may be primitive, this must be checked | |
2223 // method_count_ptr - pre-checked for NULL | |
2224 // methods_ptr - pre-checked for NULL | |
2225 jvmtiError | |
2226 JvmtiEnv::GetClassMethods(oop k_mirror, jint* method_count_ptr, jmethodID** methods_ptr) { | |
2227 JavaThread* current_thread = JavaThread::current(); | |
2228 HandleMark hm(current_thread); | |
2229 | |
2230 if (java_lang_Class::is_primitive(k_mirror)) { | |
2231 *method_count_ptr = 0; | |
2232 *methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID)); | |
2233 return JVMTI_ERROR_NONE; | |
2234 } | |
2235 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2236 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
2237 | |
2238 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
2239 if (!(Klass::cast(k)->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) { | |
2240 return JVMTI_ERROR_CLASS_NOT_PREPARED; | |
2241 } | |
2242 | |
2243 if (!Klass::cast(k)->oop_is_instance()) { | |
2244 *method_count_ptr = 0; | |
2245 *methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID)); | |
2246 return JVMTI_ERROR_NONE; | |
2247 } | |
2248 instanceKlassHandle instanceK_h(current_thread, k); | |
2249 // Allocate the result and fill it in | |
2250 int result_length = instanceK_h->methods()->length(); | |
2251 jmethodID* result_list = (jmethodID*)jvmtiMalloc(result_length * sizeof(jmethodID)); | |
2252 int index; | |
2253 if (JvmtiExport::can_maintain_original_method_order()) { | |
2254 // Use the original method ordering indices stored in the class, so we can emit | |
2255 // jmethodIDs in the order they appeared in the class file | |
2256 for (index = 0; index < result_length; index++) { | |
2257 methodOop m = methodOop(instanceK_h->methods()->obj_at(index)); | |
2258 int original_index = instanceK_h->method_ordering()->int_at(index); | |
2259 assert(original_index >= 0 && original_index < result_length, "invalid original method index"); | |
2260 jmethodID id = m->jmethod_id(); | |
2261 result_list[original_index] = id; | |
2262 } | |
2263 } else { | |
2264 // otherwise just copy in any order | |
2265 for (index = 0; index < result_length; index++) { | |
2266 methodOop m = methodOop(instanceK_h->methods()->obj_at(index)); | |
2267 jmethodID id = m->jmethod_id(); | |
2268 result_list[index] = id; | |
2269 } | |
2270 } | |
2271 // Fill in return value. | |
2272 *method_count_ptr = result_length; | |
2273 *methods_ptr = result_list; | |
2274 | |
2275 return JVMTI_ERROR_NONE; | |
2276 } /* end GetClassMethods */ | |
2277 | |
2278 | |
2279 // k_mirror - may be primitive, this must be checked | |
2280 // field_count_ptr - pre-checked for NULL | |
2281 // fields_ptr - pre-checked for NULL | |
2282 jvmtiError | |
2283 JvmtiEnv::GetClassFields(oop k_mirror, jint* field_count_ptr, jfieldID** fields_ptr) { | |
2284 if (java_lang_Class::is_primitive(k_mirror)) { | |
2285 *field_count_ptr = 0; | |
2286 *fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID)); | |
2287 return JVMTI_ERROR_NONE; | |
2288 } | |
2289 JavaThread* current_thread = JavaThread::current(); | |
2290 HandleMark hm(current_thread); | |
2291 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2292 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
2293 | |
2294 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
2295 if (!(Klass::cast(k)->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) { | |
2296 return JVMTI_ERROR_CLASS_NOT_PREPARED; | |
2297 } | |
2298 | |
2299 if (!Klass::cast(k)->oop_is_instance()) { | |
2300 *field_count_ptr = 0; | |
2301 *fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID)); | |
2302 return JVMTI_ERROR_NONE; | |
2303 } | |
2304 | |
2305 | |
2306 instanceKlassHandle instanceK_h(current_thread, k); | |
2307 | |
2308 int result_count = 0; | |
2309 // First, count the fields. | |
2310 FilteredFieldStream flds(instanceK_h, true, true); | |
2311 result_count = flds.field_count(); | |
2312 | |
2313 // Allocate the result and fill it in | |
2314 jfieldID* result_list = (jfieldID*) jvmtiMalloc(result_count * sizeof(jfieldID)); | |
2315 // The JVMTI spec requires fields in the order they occur in the class file, | |
2316 // this is the reverse order of what FieldStream hands out. | |
2317 int id_index = (result_count - 1); | |
2318 | |
2319 for (FilteredFieldStream src_st(instanceK_h, true, true); !src_st.eos(); src_st.next()) { | |
2320 result_list[id_index--] = jfieldIDWorkaround::to_jfieldID( | |
2321 instanceK_h, src_st.offset(), | |
2322 src_st.access_flags().is_static()); | |
2323 } | |
2324 assert(id_index == -1, "just checking"); | |
2325 // Fill in the results | |
2326 *field_count_ptr = result_count; | |
2327 *fields_ptr = result_list; | |
2328 | |
2329 return JVMTI_ERROR_NONE; | |
2330 } /* end GetClassFields */ | |
2331 | |
2332 | |
2333 // k_mirror - may be primitive, this must be checked | |
2334 // interface_count_ptr - pre-checked for NULL | |
2335 // interfaces_ptr - pre-checked for NULL | |
2336 jvmtiError | |
2337 JvmtiEnv::GetImplementedInterfaces(oop k_mirror, jint* interface_count_ptr, jclass** interfaces_ptr) { | |
2338 { | |
2339 if (java_lang_Class::is_primitive(k_mirror)) { | |
2340 *interface_count_ptr = 0; | |
2341 *interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass)); | |
2342 return JVMTI_ERROR_NONE; | |
2343 } | |
2344 JavaThread* current_thread = JavaThread::current(); | |
2345 HandleMark hm(current_thread); | |
2346 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2347 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
2348 | |
2349 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
2350 if (!(Klass::cast(k)->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) | |
2351 return JVMTI_ERROR_CLASS_NOT_PREPARED; | |
2352 | |
2353 if (!Klass::cast(k)->oop_is_instance()) { | |
2354 *interface_count_ptr = 0; | |
2355 *interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass)); | |
2356 return JVMTI_ERROR_NONE; | |
2357 } | |
2358 | |
2359 objArrayHandle interface_list(current_thread, instanceKlass::cast(k)->local_interfaces()); | |
2360 const int result_length = (interface_list.is_null() ? 0 : interface_list->length()); | |
2361 jclass* result_list = (jclass*) jvmtiMalloc(result_length * sizeof(jclass)); | |
2362 for (int i_index = 0; i_index < result_length; i_index += 1) { | |
2363 oop oop_at = interface_list->obj_at(i_index); | |
2364 assert(oop_at->is_klass(), "interfaces must be klassOops"); | |
2365 klassOop klassOop_at = klassOop(oop_at); // ???: is there a better way? | |
2366 assert(Klass::cast(klassOop_at)->is_interface(), "interfaces must be interfaces"); | |
2367 oop mirror_at = Klass::cast(klassOop_at)->java_mirror(); | |
2368 Handle handle_at = Handle(current_thread, mirror_at); | |
2369 result_list[i_index] = (jclass) jni_reference(handle_at); | |
2370 } | |
2371 *interface_count_ptr = result_length; | |
2372 *interfaces_ptr = result_list; | |
2373 } | |
2374 | |
2375 return JVMTI_ERROR_NONE; | |
2376 } /* end GetImplementedInterfaces */ | |
2377 | |
2378 | |
2379 // k_mirror - may be primitive, this must be checked | |
2380 // minor_version_ptr - pre-checked for NULL | |
2381 // major_version_ptr - pre-checked for NULL | |
2382 jvmtiError | |
2383 JvmtiEnv::GetClassVersionNumbers(oop k_mirror, jint* minor_version_ptr, jint* major_version_ptr) { | |
2384 if (java_lang_Class::is_primitive(k_mirror)) { | |
2385 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2386 } | |
2387 klassOop k_oop = java_lang_Class::as_klassOop(k_mirror); | |
2388 Thread *thread = Thread::current(); | |
2389 HandleMark hm(thread); | |
2390 KlassHandle klass(thread, k_oop); | |
2391 | |
2392 jint status = klass->jvmti_class_status(); | |
2393 if (status & (JVMTI_CLASS_STATUS_ERROR)) { | |
2394 return JVMTI_ERROR_INVALID_CLASS; | |
2395 } | |
2396 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { | |
2397 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2398 } | |
2399 | |
2400 instanceKlassHandle ik(thread, k_oop); | |
2401 *minor_version_ptr = ik->minor_version(); | |
2402 *major_version_ptr = ik->major_version(); | |
2403 | |
2404 return JVMTI_ERROR_NONE; | |
2405 } /* end GetClassVersionNumbers */ | |
2406 | |
2407 | |
2408 // k_mirror - may be primitive, this must be checked | |
2409 // constant_pool_count_ptr - pre-checked for NULL | |
2410 // constant_pool_byte_count_ptr - pre-checked for NULL | |
2411 // constant_pool_bytes_ptr - pre-checked for NULL | |
2412 jvmtiError | |
2413 JvmtiEnv::GetConstantPool(oop k_mirror, jint* constant_pool_count_ptr, jint* constant_pool_byte_count_ptr, unsigned char** constant_pool_bytes_ptr) { | |
2414 if (java_lang_Class::is_primitive(k_mirror)) { | |
2415 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2416 } | |
2417 | |
2418 klassOop k_oop = java_lang_Class::as_klassOop(k_mirror); | |
2419 Thread *thread = Thread::current(); | |
2420 HandleMark hm(thread); | |
2421 ResourceMark rm(thread); | |
2422 KlassHandle klass(thread, k_oop); | |
2423 | |
2424 jint status = klass->jvmti_class_status(); | |
2425 if (status & (JVMTI_CLASS_STATUS_ERROR)) { | |
2426 return JVMTI_ERROR_INVALID_CLASS; | |
2427 } | |
2428 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { | |
2429 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2430 } | |
2431 | |
2432 instanceKlassHandle ikh(thread, k_oop); | |
2433 constantPoolHandle constants(thread, ikh->constants()); | |
2434 ObjectLocker ol(constants, thread); // lock constant pool while we query it | |
2435 | |
2436 JvmtiConstantPoolReconstituter reconstituter(ikh); | |
2437 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
2438 return reconstituter.get_error(); | |
2439 } | |
2440 | |
2441 unsigned char *cpool_bytes; | |
2442 int cpool_size = reconstituter.cpool_size(); | |
2443 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
2444 return reconstituter.get_error(); | |
2445 } | |
2446 jvmtiError res = allocate(cpool_size, &cpool_bytes); | |
2447 if (res != JVMTI_ERROR_NONE) { | |
2448 return res; | |
2449 } | |
2450 reconstituter.copy_cpool_bytes(cpool_bytes); | |
2451 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
2452 return reconstituter.get_error(); | |
2453 } | |
2454 | |
2455 *constant_pool_count_ptr = constants->length(); | |
2456 *constant_pool_byte_count_ptr = cpool_size; | |
2457 *constant_pool_bytes_ptr = cpool_bytes; | |
2458 | |
2459 return JVMTI_ERROR_NONE; | |
2460 } /* end GetConstantPool */ | |
2461 | |
2462 | |
2463 // k_mirror - may be primitive, this must be checked | |
2464 // is_interface_ptr - pre-checked for NULL | |
2465 jvmtiError | |
2466 JvmtiEnv::IsInterface(oop k_mirror, jboolean* is_interface_ptr) { | |
2467 { | |
2468 bool result = false; | |
2469 if (!java_lang_Class::is_primitive(k_mirror)) { | |
2470 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2471 if (k != NULL && Klass::cast(k)->is_interface()) { | |
2472 result = true; | |
2473 } | |
2474 } | |
2475 *is_interface_ptr = result; | |
2476 } | |
2477 | |
2478 return JVMTI_ERROR_NONE; | |
2479 } /* end IsInterface */ | |
2480 | |
2481 | |
2482 // k_mirror - may be primitive, this must be checked | |
2483 // is_array_class_ptr - pre-checked for NULL | |
2484 jvmtiError | |
2485 JvmtiEnv::IsArrayClass(oop k_mirror, jboolean* is_array_class_ptr) { | |
2486 { | |
2487 bool result = false; | |
2488 if (!java_lang_Class::is_primitive(k_mirror)) { | |
2489 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2490 if (k != NULL && Klass::cast(k)->oop_is_array()) { | |
2491 result = true; | |
2492 } | |
2493 } | |
2494 *is_array_class_ptr = result; | |
2495 } | |
2496 | |
2497 return JVMTI_ERROR_NONE; | |
2498 } /* end IsArrayClass */ | |
2499 | |
2500 | |
2501 // k_mirror - may be primitive, this must be checked | |
2502 // classloader_ptr - pre-checked for NULL | |
2503 jvmtiError | |
2504 JvmtiEnv::GetClassLoader(oop k_mirror, jobject* classloader_ptr) { | |
2505 { | |
2506 if (java_lang_Class::is_primitive(k_mirror)) { | |
2507 *classloader_ptr = (jclass) jni_reference(Handle()); | |
2508 return JVMTI_ERROR_NONE; | |
2509 } | |
2510 JavaThread* current_thread = JavaThread::current(); | |
2511 HandleMark hm(current_thread); | |
2512 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2513 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
2514 | |
2515 oop result_oop = Klass::cast(k)->class_loader(); | |
2516 if (result_oop == NULL) { | |
2517 *classloader_ptr = (jclass) jni_reference(Handle()); | |
2518 return JVMTI_ERROR_NONE; | |
2519 } | |
2520 Handle result_handle = Handle(current_thread, result_oop); | |
2521 jclass result_jnihandle = (jclass) jni_reference(result_handle); | |
2522 *classloader_ptr = result_jnihandle; | |
2523 } | |
2524 return JVMTI_ERROR_NONE; | |
2525 } /* end GetClassLoader */ | |
2526 | |
2527 | |
2528 // k_mirror - may be primitive, this must be checked | |
2529 // source_debug_extension_ptr - pre-checked for NULL | |
2530 jvmtiError | |
2531 JvmtiEnv::GetSourceDebugExtension(oop k_mirror, char** source_debug_extension_ptr) { | |
2532 { | |
2533 if (java_lang_Class::is_primitive(k_mirror)) { | |
2534 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2535 } | |
2536 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2537 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
2538 if (!Klass::cast(k)->oop_is_instance()) { | |
2539 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2540 } | |
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2541 Symbol* sdeOop = instanceKlass::cast(k)->source_debug_extension(); |
0 | 2542 NULL_CHECK(sdeOop, JVMTI_ERROR_ABSENT_INFORMATION); |
2543 | |
2544 { | |
2545 JavaThread* current_thread = JavaThread::current(); | |
2546 ResourceMark rm(current_thread); | |
2547 const char* sdecp = (const char*) sdeOop->as_C_string(); | |
2548 *source_debug_extension_ptr = (char *) jvmtiMalloc(strlen(sdecp)+1); | |
2549 strcpy(*source_debug_extension_ptr, sdecp); | |
2550 } | |
2551 } | |
2552 | |
2553 return JVMTI_ERROR_NONE; | |
2554 } /* end GetSourceDebugExtension */ | |
2555 | |
2556 // | |
2557 // Object functions | |
2558 // | |
2559 | |
2560 // hash_code_ptr - pre-checked for NULL | |
2561 jvmtiError | |
2562 JvmtiEnv::GetObjectHashCode(jobject object, jint* hash_code_ptr) { | |
2563 oop mirror = JNIHandles::resolve_external_guard(object); | |
2564 NULL_CHECK(mirror, JVMTI_ERROR_INVALID_OBJECT); | |
2565 NULL_CHECK(hash_code_ptr, JVMTI_ERROR_NULL_POINTER); | |
2566 | |
2567 { | |
2568 jint result = (jint) mirror->identity_hash(); | |
2569 *hash_code_ptr = result; | |
2570 } | |
2571 return JVMTI_ERROR_NONE; | |
2572 } /* end GetObjectHashCode */ | |
2573 | |
2574 | |
2575 // info_ptr - pre-checked for NULL | |
2576 jvmtiError | |
2577 JvmtiEnv::GetObjectMonitorUsage(jobject object, jvmtiMonitorUsage* info_ptr) { | |
2578 JavaThread* calling_thread = JavaThread::current(); | |
2579 jvmtiError err = get_object_monitor_usage(calling_thread, object, info_ptr); | |
2580 if (err == JVMTI_ERROR_THREAD_NOT_SUSPENDED) { | |
2581 // Some of the critical threads were not suspended. go to a safepoint and try again | |
2582 VM_GetObjectMonitorUsage op(this, calling_thread, object, info_ptr); | |
2583 VMThread::execute(&op); | |
2584 err = op.result(); | |
2585 } | |
2586 return err; | |
2587 } /* end GetObjectMonitorUsage */ | |
2588 | |
2589 | |
2590 // | |
2591 // Field functions | |
2592 // | |
2593 | |
2594 // name_ptr - NULL is a valid value, must be checked | |
2595 // signature_ptr - NULL is a valid value, must be checked | |
2596 // generic_ptr - NULL is a valid value, must be checked | |
2597 jvmtiError | |
2598 JvmtiEnv::GetFieldName(fieldDescriptor* fdesc_ptr, char** name_ptr, char** signature_ptr, char** generic_ptr) { | |
2599 JavaThread* current_thread = JavaThread::current(); | |
2600 ResourceMark rm(current_thread); | |
2601 if (name_ptr == NULL) { | |
2602 // just don't return the name | |
2603 } else { | |
2604 const char* fieldName = fdesc_ptr->name()->as_C_string(); | |
2605 *name_ptr = (char*) jvmtiMalloc(strlen(fieldName) + 1); | |
2606 if (*name_ptr == NULL) | |
2607 return JVMTI_ERROR_OUT_OF_MEMORY; | |
2608 strcpy(*name_ptr, fieldName); | |
2609 } | |
2610 if (signature_ptr== NULL) { | |
2611 // just don't return the signature | |
2612 } else { | |
2613 const char* fieldSignature = fdesc_ptr->signature()->as_C_string(); | |
2614 *signature_ptr = (char*) jvmtiMalloc(strlen(fieldSignature) + 1); | |
2615 if (*signature_ptr == NULL) | |
2616 return JVMTI_ERROR_OUT_OF_MEMORY; | |
2617 strcpy(*signature_ptr, fieldSignature); | |
2618 } | |
2619 if (generic_ptr != NULL) { | |
2620 *generic_ptr = NULL; | |
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2621 Symbol* soop = fdesc_ptr->generic_signature(); |
0 | 2622 if (soop != NULL) { |
2623 const char* gen_sig = soop->as_C_string(); | |
2624 if (gen_sig != NULL) { | |
2625 jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr); | |
2626 if (err != JVMTI_ERROR_NONE) { | |
2627 return err; | |
2628 } | |
2629 strcpy(*generic_ptr, gen_sig); | |
2630 } | |
2631 } | |
2632 } | |
2633 return JVMTI_ERROR_NONE; | |
2634 } /* end GetFieldName */ | |
2635 | |
2636 | |
2637 // declaring_class_ptr - pre-checked for NULL | |
2638 jvmtiError | |
2639 JvmtiEnv::GetFieldDeclaringClass(fieldDescriptor* fdesc_ptr, jclass* declaring_class_ptr) { | |
2640 | |
2641 *declaring_class_ptr = get_jni_class_non_null(fdesc_ptr->field_holder()); | |
2642 return JVMTI_ERROR_NONE; | |
2643 } /* end GetFieldDeclaringClass */ | |
2644 | |
2645 | |
2646 // modifiers_ptr - pre-checked for NULL | |
2647 jvmtiError | |
2648 JvmtiEnv::GetFieldModifiers(fieldDescriptor* fdesc_ptr, jint* modifiers_ptr) { | |
2649 | |
2650 AccessFlags resultFlags = fdesc_ptr->access_flags(); | |
2651 jint result = resultFlags.as_int(); | |
2652 *modifiers_ptr = result; | |
2653 | |
2654 return JVMTI_ERROR_NONE; | |
2655 } /* end GetFieldModifiers */ | |
2656 | |
2657 | |
2658 // is_synthetic_ptr - pre-checked for NULL | |
2659 jvmtiError | |
2660 JvmtiEnv::IsFieldSynthetic(fieldDescriptor* fdesc_ptr, jboolean* is_synthetic_ptr) { | |
2661 *is_synthetic_ptr = fdesc_ptr->is_synthetic(); | |
2662 return JVMTI_ERROR_NONE; | |
2663 } /* end IsFieldSynthetic */ | |
2664 | |
2665 | |
2666 // | |
2667 // Method functions | |
2668 // | |
2669 | |
2670 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2671 // name_ptr - NULL is a valid value, must be checked | |
2672 // signature_ptr - NULL is a valid value, must be checked | |
2673 // generic_ptr - NULL is a valid value, must be checked | |
2674 jvmtiError | |
2675 JvmtiEnv::GetMethodName(methodOop method_oop, char** name_ptr, char** signature_ptr, char** generic_ptr) { | |
2676 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2677 JavaThread* current_thread = JavaThread::current(); | |
2678 | |
2679 ResourceMark rm(current_thread); // get the utf8 name and signature | |
2680 if (name_ptr == NULL) { | |
2681 // just don't return the name | |
2682 } else { | |
2683 const char* utf8_name = (const char *) method_oop->name()->as_utf8(); | |
2684 *name_ptr = (char *) jvmtiMalloc(strlen(utf8_name)+1); | |
2685 strcpy(*name_ptr, utf8_name); | |
2686 } | |
2687 if (signature_ptr == NULL) { | |
2688 // just don't return the signature | |
2689 } else { | |
2690 const char* utf8_signature = (const char *) method_oop->signature()->as_utf8(); | |
2691 *signature_ptr = (char *) jvmtiMalloc(strlen(utf8_signature) + 1); | |
2692 strcpy(*signature_ptr, utf8_signature); | |
2693 } | |
2694 | |
2695 if (generic_ptr != NULL) { | |
2696 *generic_ptr = NULL; | |
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|
2697 Symbol* soop = method_oop->generic_signature(); |
0 | 2698 if (soop != NULL) { |
2699 const char* gen_sig = soop->as_C_string(); | |
2700 if (gen_sig != NULL) { | |
2701 jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr); | |
2702 if (err != JVMTI_ERROR_NONE) { | |
2703 return err; | |
2704 } | |
2705 strcpy(*generic_ptr, gen_sig); | |
2706 } | |
2707 } | |
2708 } | |
2709 return JVMTI_ERROR_NONE; | |
2710 } /* end GetMethodName */ | |
2711 | |
2712 | |
2713 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2714 // declaring_class_ptr - pre-checked for NULL | |
2715 jvmtiError | |
2716 JvmtiEnv::GetMethodDeclaringClass(methodOop method_oop, jclass* declaring_class_ptr) { | |
2717 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2718 (*declaring_class_ptr) = get_jni_class_non_null(method_oop->method_holder()); | |
2719 return JVMTI_ERROR_NONE; | |
2720 } /* end GetMethodDeclaringClass */ | |
2721 | |
2722 | |
2723 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2724 // modifiers_ptr - pre-checked for NULL | |
2725 jvmtiError | |
2726 JvmtiEnv::GetMethodModifiers(methodOop method_oop, jint* modifiers_ptr) { | |
2727 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2728 (*modifiers_ptr) = method_oop->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
2729 return JVMTI_ERROR_NONE; | |
2730 } /* end GetMethodModifiers */ | |
2731 | |
2732 | |
2733 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2734 // max_ptr - pre-checked for NULL | |
2735 jvmtiError | |
2736 JvmtiEnv::GetMaxLocals(methodOop method_oop, jint* max_ptr) { | |
2737 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2738 // get max stack | |
2739 (*max_ptr) = method_oop->max_locals(); | |
2740 return JVMTI_ERROR_NONE; | |
2741 } /* end GetMaxLocals */ | |
2742 | |
2743 | |
2744 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2745 // size_ptr - pre-checked for NULL | |
2746 jvmtiError | |
2747 JvmtiEnv::GetArgumentsSize(methodOop method_oop, jint* size_ptr) { | |
2748 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2749 // get size of arguments | |
2750 | |
2751 (*size_ptr) = method_oop->size_of_parameters(); | |
2752 return JVMTI_ERROR_NONE; | |
2753 } /* end GetArgumentsSize */ | |
2754 | |
2755 | |
2756 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2757 // entry_count_ptr - pre-checked for NULL | |
2758 // table_ptr - pre-checked for NULL | |
2759 jvmtiError | |
2760 JvmtiEnv::GetLineNumberTable(methodOop method_oop, jint* entry_count_ptr, jvmtiLineNumberEntry** table_ptr) { | |
2761 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2762 if (!method_oop->has_linenumber_table()) { | |
2763 return (JVMTI_ERROR_ABSENT_INFORMATION); | |
2764 } | |
2765 | |
2766 // The line number table is compressed so we don't know how big it is until decompressed. | |
2767 // Decompression is really fast so we just do it twice. | |
2768 | |
2769 // Compute size of table | |
2770 jint num_entries = 0; | |
2771 CompressedLineNumberReadStream stream(method_oop->compressed_linenumber_table()); | |
2772 while (stream.read_pair()) { | |
2773 num_entries++; | |
2774 } | |
2775 jvmtiLineNumberEntry *jvmti_table = | |
2776 (jvmtiLineNumberEntry *)jvmtiMalloc(num_entries * (sizeof(jvmtiLineNumberEntry))); | |
2777 | |
2778 // Fill jvmti table | |
2779 if (num_entries > 0) { | |
2780 int index = 0; | |
2781 CompressedLineNumberReadStream stream(method_oop->compressed_linenumber_table()); | |
2782 while (stream.read_pair()) { | |
2783 jvmti_table[index].start_location = (jlocation) stream.bci(); | |
2784 jvmti_table[index].line_number = (jint) stream.line(); | |
2785 index++; | |
2786 } | |
2787 assert(index == num_entries, "sanity check"); | |
2788 } | |
2789 | |
2790 // Set up results | |
2791 (*entry_count_ptr) = num_entries; | |
2792 (*table_ptr) = jvmti_table; | |
2793 | |
2794 return JVMTI_ERROR_NONE; | |
2795 } /* end GetLineNumberTable */ | |
2796 | |
2797 | |
2798 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2799 // start_location_ptr - pre-checked for NULL | |
2800 // end_location_ptr - pre-checked for NULL | |
2801 jvmtiError | |
2802 JvmtiEnv::GetMethodLocation(methodOop method_oop, jlocation* start_location_ptr, jlocation* end_location_ptr) { | |
2803 | |
2804 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2805 // get start and end location | |
2806 (*end_location_ptr) = (jlocation) (method_oop->code_size() - 1); | |
2807 if (method_oop->code_size() == 0) { | |
2808 // there is no code so there is no start location | |
2809 (*start_location_ptr) = (jlocation)(-1); | |
2810 } else { | |
2811 (*start_location_ptr) = (jlocation)(0); | |
2812 } | |
2813 | |
2814 return JVMTI_ERROR_NONE; | |
2815 } /* end GetMethodLocation */ | |
2816 | |
2817 | |
2818 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2819 // entry_count_ptr - pre-checked for NULL | |
2820 // table_ptr - pre-checked for NULL | |
2821 jvmtiError | |
2822 JvmtiEnv::GetLocalVariableTable(methodOop method_oop, jint* entry_count_ptr, jvmtiLocalVariableEntry** table_ptr) { | |
2823 | |
2824 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2825 JavaThread* current_thread = JavaThread::current(); | |
2826 | |
2827 // does the klass have any local variable information? | |
2828 instanceKlass* ik = instanceKlass::cast(method_oop->method_holder()); | |
2829 if (!ik->access_flags().has_localvariable_table()) { | |
2830 return (JVMTI_ERROR_ABSENT_INFORMATION); | |
2831 } | |
2832 | |
2833 constantPoolOop constants = method_oop->constants(); | |
2834 NULL_CHECK(constants, JVMTI_ERROR_ABSENT_INFORMATION); | |
2835 | |
2836 // in the vm localvariable table representation, 6 consecutive elements in the table | |
2837 // represent a 6-tuple of shorts | |
2838 // [start_pc, length, name_index, descriptor_index, signature_index, index] | |
2839 jint num_entries = method_oop->localvariable_table_length(); | |
2840 jvmtiLocalVariableEntry *jvmti_table = (jvmtiLocalVariableEntry *) | |
2841 jvmtiMalloc(num_entries * (sizeof(jvmtiLocalVariableEntry))); | |
2842 | |
2843 if (num_entries > 0) { | |
2844 LocalVariableTableElement* table = method_oop->localvariable_table_start(); | |
2845 for (int i = 0; i < num_entries; i++) { | |
2846 // get the 5 tuple information from the vm table | |
2847 jlocation start_location = (jlocation) table[i].start_bci; | |
2848 jint length = (jint) table[i].length; | |
2849 int name_index = (int) table[i].name_cp_index; | |
2850 int signature_index = (int) table[i].descriptor_cp_index; | |
2851 int generic_signature_index = (int) table[i].signature_cp_index; | |
2852 jint slot = (jint) table[i].slot; | |
2853 | |
2854 // get utf8 name and signature | |
2855 char *name_buf = NULL; | |
2856 char *sig_buf = NULL; | |
2857 char *gen_sig_buf = NULL; | |
2858 { | |
2859 ResourceMark rm(current_thread); | |
2860 | |
2861 const char *utf8_name = (const char *) constants->symbol_at(name_index)->as_utf8(); | |
2862 name_buf = (char *) jvmtiMalloc(strlen(utf8_name)+1); | |
2863 strcpy(name_buf, utf8_name); | |
2864 | |
2865 const char *utf8_signature = (const char *) constants->symbol_at(signature_index)->as_utf8(); | |
2866 sig_buf = (char *) jvmtiMalloc(strlen(utf8_signature)+1); | |
2867 strcpy(sig_buf, utf8_signature); | |
2868 | |
2869 if (generic_signature_index > 0) { | |
2870 const char *utf8_gen_sign = (const char *) | |
2871 constants->symbol_at(generic_signature_index)->as_utf8(); | |
2872 gen_sig_buf = (char *) jvmtiMalloc(strlen(utf8_gen_sign)+1); | |
2873 strcpy(gen_sig_buf, utf8_gen_sign); | |
2874 } | |
2875 } | |
2876 | |
2877 // fill in the jvmti local variable table | |
2878 jvmti_table[i].start_location = start_location; | |
2879 jvmti_table[i].length = length; | |
2880 jvmti_table[i].name = name_buf; | |
2881 jvmti_table[i].signature = sig_buf; | |
2882 jvmti_table[i].generic_signature = gen_sig_buf; | |
2883 jvmti_table[i].slot = slot; | |
2884 } | |
2885 } | |
2886 | |
2887 // set results | |
2888 (*entry_count_ptr) = num_entries; | |
2889 (*table_ptr) = jvmti_table; | |
2890 | |
2891 return JVMTI_ERROR_NONE; | |
2892 } /* end GetLocalVariableTable */ | |
2893 | |
2894 | |
2895 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2896 // bytecode_count_ptr - pre-checked for NULL | |
2897 // bytecodes_ptr - pre-checked for NULL | |
2898 jvmtiError | |
2899 JvmtiEnv::GetBytecodes(methodOop method_oop, jint* bytecode_count_ptr, unsigned char** bytecodes_ptr) { | |
2900 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2901 | |
2902 HandleMark hm; | |
2903 methodHandle method(method_oop); | |
2904 jint size = (jint)method->code_size(); | |
2905 jvmtiError err = allocate(size, bytecodes_ptr); | |
2906 if (err != JVMTI_ERROR_NONE) { | |
2907 return err; | |
2908 } | |
2909 | |
2910 (*bytecode_count_ptr) = size; | |
2911 // get byte codes | |
2912 JvmtiClassFileReconstituter::copy_bytecodes(method, *bytecodes_ptr); | |
2913 | |
2914 return JVMTI_ERROR_NONE; | |
2915 } /* end GetBytecodes */ | |
2916 | |
2917 | |
2918 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2919 // is_native_ptr - pre-checked for NULL | |
2920 jvmtiError | |
2921 JvmtiEnv::IsMethodNative(methodOop method_oop, jboolean* is_native_ptr) { | |
2922 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2923 (*is_native_ptr) = method_oop->is_native(); | |
2924 return JVMTI_ERROR_NONE; | |
2925 } /* end IsMethodNative */ | |
2926 | |
2927 | |
2928 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2929 // is_synthetic_ptr - pre-checked for NULL | |
2930 jvmtiError | |
2931 JvmtiEnv::IsMethodSynthetic(methodOop method_oop, jboolean* is_synthetic_ptr) { | |
2932 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2933 (*is_synthetic_ptr) = method_oop->is_synthetic(); | |
2934 return JVMTI_ERROR_NONE; | |
2935 } /* end IsMethodSynthetic */ | |
2936 | |
2937 | |
2938 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2939 // is_obsolete_ptr - pre-checked for NULL | |
2940 jvmtiError | |
2941 JvmtiEnv::IsMethodObsolete(methodOop method_oop, jboolean* is_obsolete_ptr) { | |
1121 | 2942 if (use_version_1_0_semantics() && |
2943 get_capabilities()->can_redefine_classes == 0) { | |
2944 // This JvmtiEnv requested version 1.0 semantics and this function | |
2945 // requires the can_redefine_classes capability in version 1.0 so | |
2946 // we need to return an error here. | |
2947 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; | |
2948 } | |
2949 | |
0 | 2950 if (method_oop == NULL || method_oop->is_obsolete()) { |
2951 *is_obsolete_ptr = true; | |
2952 } else { | |
2953 *is_obsolete_ptr = false; | |
2954 } | |
2955 return JVMTI_ERROR_NONE; | |
2956 } /* end IsMethodObsolete */ | |
2957 | |
2958 // | |
2959 // Raw Monitor functions | |
2960 // | |
2961 | |
2962 // name - pre-checked for NULL | |
2963 // monitor_ptr - pre-checked for NULL | |
2964 jvmtiError | |
2965 JvmtiEnv::CreateRawMonitor(const char* name, jrawMonitorID* monitor_ptr) { | |
2966 JvmtiRawMonitor* rmonitor = new JvmtiRawMonitor(name); | |
2967 NULL_CHECK(rmonitor, JVMTI_ERROR_OUT_OF_MEMORY); | |
2968 | |
2969 *monitor_ptr = (jrawMonitorID)rmonitor; | |
2970 | |
2971 return JVMTI_ERROR_NONE; | |
2972 } /* end CreateRawMonitor */ | |
2973 | |
2974 | |
2975 // rmonitor - pre-checked for validity | |
2976 jvmtiError | |
2977 JvmtiEnv::DestroyRawMonitor(JvmtiRawMonitor * rmonitor) { | |
2978 if (Threads::number_of_threads() == 0) { | |
2979 // Remove this monitor from pending raw monitors list | |
2980 // if it has entered in onload or start phase. | |
2981 JvmtiPendingMonitors::destroy(rmonitor); | |
2982 } else { | |
2983 Thread* thread = Thread::current(); | |
2984 if (rmonitor->is_entered(thread)) { | |
2985 // The caller owns this monitor which we are about to destroy. | |
2986 // We exit the underlying synchronization object so that the | |
2987 // "delete monitor" call below can work without an assertion | |
2988 // failure on systems that don't like destroying synchronization | |
2989 // objects that are locked. | |
2990 int r; | |
2991 intptr_t recursion = rmonitor->recursions(); | |
2992 for (intptr_t i=0; i <= recursion; i++) { | |
2993 r = rmonitor->raw_exit(thread); | |
2994 assert(r == ObjectMonitor::OM_OK, "raw_exit should have worked"); | |
2995 if (r != ObjectMonitor::OM_OK) { // robustness | |
2996 return JVMTI_ERROR_INTERNAL; | |
2997 } | |
2998 } | |
2999 } | |
3000 if (rmonitor->owner() != NULL) { | |
3001 // The caller is trying to destroy a monitor that is locked by | |
3002 // someone else. While this is not forbidden by the JVMTI | |
3003 // spec, it will cause an assertion failure on systems that don't | |
3004 // like destroying synchronization objects that are locked. | |
3005 // We indicate a problem with the error return (and leak the | |
3006 // monitor's memory). | |
3007 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3008 } | |
3009 } | |
3010 | |
3011 delete rmonitor; | |
3012 | |
3013 return JVMTI_ERROR_NONE; | |
3014 } /* end DestroyRawMonitor */ | |
3015 | |
3016 | |
3017 // rmonitor - pre-checked for validity | |
3018 jvmtiError | |
3019 JvmtiEnv::RawMonitorEnter(JvmtiRawMonitor * rmonitor) { | |
3020 if (Threads::number_of_threads() == 0) { | |
3021 // No JavaThreads exist so ObjectMonitor enter cannot be | |
3022 // used, add this raw monitor to the pending list. | |
3023 // The pending monitors will be actually entered when | |
3024 // the VM is setup. | |
3025 // See transition_pending_raw_monitors in create_vm() | |
3026 // in thread.cpp. | |
3027 JvmtiPendingMonitors::enter(rmonitor); | |
3028 } else { | |
3029 int r; | |
3030 Thread* thread = Thread::current(); | |
3031 | |
3032 if (thread->is_Java_thread()) { | |
3033 JavaThread* current_thread = (JavaThread*)thread; | |
3034 | |
3035 #ifdef PROPER_TRANSITIONS | |
3036 // Not really unknown but ThreadInVMfromNative does more than we want | |
3037 ThreadInVMfromUnknown __tiv; | |
3038 { | |
3039 ThreadBlockInVM __tbivm(current_thread); | |
3040 r = rmonitor->raw_enter(current_thread); | |
3041 } | |
3042 #else | |
3043 /* Transition to thread_blocked without entering vm state */ | |
3044 /* This is really evil. Normally you can't undo _thread_blocked */ | |
3045 /* transitions like this because it would cause us to miss a */ | |
3046 /* safepoint but since the thread was already in _thread_in_native */ | |
3047 /* the thread is not leaving a safepoint safe state and it will */ | |
3048 /* block when it tries to return from native. We can't safepoint */ | |
3049 /* block in here because we could deadlock the vmthread. Blech. */ | |
3050 | |
3051 JavaThreadState state = current_thread->thread_state(); | |
3052 assert(state == _thread_in_native, "Must be _thread_in_native"); | |
3053 // frame should already be walkable since we are in native | |
3054 assert(!current_thread->has_last_Java_frame() || | |
3055 current_thread->frame_anchor()->walkable(), "Must be walkable"); | |
3056 current_thread->set_thread_state(_thread_blocked); | |
3057 | |
3058 r = rmonitor->raw_enter(current_thread); | |
3059 // restore state, still at a safepoint safe state | |
3060 current_thread->set_thread_state(state); | |
3061 | |
3062 #endif /* PROPER_TRANSITIONS */ | |
3063 assert(r == ObjectMonitor::OM_OK, "raw_enter should have worked"); | |
3064 } else { | |
3065 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
3066 r = rmonitor->raw_enter(thread); | |
3067 } else { | |
3068 ShouldNotReachHere(); | |
3069 } | |
3070 } | |
3071 | |
3072 if (r != ObjectMonitor::OM_OK) { // robustness | |
3073 return JVMTI_ERROR_INTERNAL; | |
3074 } | |
3075 } | |
3076 return JVMTI_ERROR_NONE; | |
3077 } /* end RawMonitorEnter */ | |
3078 | |
3079 | |
3080 // rmonitor - pre-checked for validity | |
3081 jvmtiError | |
3082 JvmtiEnv::RawMonitorExit(JvmtiRawMonitor * rmonitor) { | |
3083 jvmtiError err = JVMTI_ERROR_NONE; | |
3084 | |
3085 if (Threads::number_of_threads() == 0) { | |
3086 // No JavaThreads exist so just remove this monitor from the pending list. | |
3087 // Bool value from exit is false if rmonitor is not in the list. | |
3088 if (!JvmtiPendingMonitors::exit(rmonitor)) { | |
3089 err = JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3090 } | |
3091 } else { | |
3092 int r; | |
3093 Thread* thread = Thread::current(); | |
3094 | |
3095 if (thread->is_Java_thread()) { | |
3096 JavaThread* current_thread = (JavaThread*)thread; | |
3097 #ifdef PROPER_TRANSITIONS | |
3098 // Not really unknown but ThreadInVMfromNative does more than we want | |
3099 ThreadInVMfromUnknown __tiv; | |
3100 #endif /* PROPER_TRANSITIONS */ | |
3101 r = rmonitor->raw_exit(current_thread); | |
3102 } else { | |
3103 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
3104 r = rmonitor->raw_exit(thread); | |
3105 } else { | |
3106 ShouldNotReachHere(); | |
3107 } | |
3108 } | |
3109 | |
3110 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
3111 err = JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3112 } else { | |
3113 assert(r == ObjectMonitor::OM_OK, "raw_exit should have worked"); | |
3114 if (r != ObjectMonitor::OM_OK) { // robustness | |
3115 err = JVMTI_ERROR_INTERNAL; | |
3116 } | |
3117 } | |
3118 } | |
3119 return err; | |
3120 } /* end RawMonitorExit */ | |
3121 | |
3122 | |
3123 // rmonitor - pre-checked for validity | |
3124 jvmtiError | |
3125 JvmtiEnv::RawMonitorWait(JvmtiRawMonitor * rmonitor, jlong millis) { | |
3126 int r; | |
3127 Thread* thread = Thread::current(); | |
3128 | |
3129 if (thread->is_Java_thread()) { | |
3130 JavaThread* current_thread = (JavaThread*)thread; | |
3131 #ifdef PROPER_TRANSITIONS | |
3132 // Not really unknown but ThreadInVMfromNative does more than we want | |
3133 ThreadInVMfromUnknown __tiv; | |
3134 { | |
3135 ThreadBlockInVM __tbivm(current_thread); | |
3136 r = rmonitor->raw_wait(millis, true, current_thread); | |
3137 } | |
3138 #else | |
3139 /* Transition to thread_blocked without entering vm state */ | |
3140 /* This is really evil. Normally you can't undo _thread_blocked */ | |
3141 /* transitions like this because it would cause us to miss a */ | |
3142 /* safepoint but since the thread was already in _thread_in_native */ | |
3143 /* the thread is not leaving a safepoint safe state and it will */ | |
3144 /* block when it tries to return from native. We can't safepoint */ | |
3145 /* block in here because we could deadlock the vmthread. Blech. */ | |
3146 | |
3147 JavaThreadState state = current_thread->thread_state(); | |
3148 assert(state == _thread_in_native, "Must be _thread_in_native"); | |
3149 // frame should already be walkable since we are in native | |
3150 assert(!current_thread->has_last_Java_frame() || | |
3151 current_thread->frame_anchor()->walkable(), "Must be walkable"); | |
3152 current_thread->set_thread_state(_thread_blocked); | |
3153 | |
3154 r = rmonitor->raw_wait(millis, true, current_thread); | |
3155 // restore state, still at a safepoint safe state | |
3156 current_thread->set_thread_state(state); | |
3157 | |
3158 #endif /* PROPER_TRANSITIONS */ | |
3159 } else { | |
3160 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
3161 r = rmonitor->raw_wait(millis, true, thread); | |
3162 } else { | |
3163 ShouldNotReachHere(); | |
3164 } | |
3165 } | |
3166 | |
3167 switch (r) { | |
3168 case ObjectMonitor::OM_INTERRUPTED: | |
3169 return JVMTI_ERROR_INTERRUPT; | |
3170 case ObjectMonitor::OM_ILLEGAL_MONITOR_STATE: | |
3171 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3172 } | |
3173 assert(r == ObjectMonitor::OM_OK, "raw_wait should have worked"); | |
3174 if (r != ObjectMonitor::OM_OK) { // robustness | |
3175 return JVMTI_ERROR_INTERNAL; | |
3176 } | |
3177 | |
3178 return JVMTI_ERROR_NONE; | |
3179 } /* end RawMonitorWait */ | |
3180 | |
3181 | |
3182 // rmonitor - pre-checked for validity | |
3183 jvmtiError | |
3184 JvmtiEnv::RawMonitorNotify(JvmtiRawMonitor * rmonitor) { | |
3185 int r; | |
3186 Thread* thread = Thread::current(); | |
3187 | |
3188 if (thread->is_Java_thread()) { | |
3189 JavaThread* current_thread = (JavaThread*)thread; | |
3190 // Not really unknown but ThreadInVMfromNative does more than we want | |
3191 ThreadInVMfromUnknown __tiv; | |
3192 r = rmonitor->raw_notify(current_thread); | |
3193 } else { | |
3194 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
3195 r = rmonitor->raw_notify(thread); | |
3196 } else { | |
3197 ShouldNotReachHere(); | |
3198 } | |
3199 } | |
3200 | |
3201 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
3202 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3203 } | |
3204 assert(r == ObjectMonitor::OM_OK, "raw_notify should have worked"); | |
3205 if (r != ObjectMonitor::OM_OK) { // robustness | |
3206 return JVMTI_ERROR_INTERNAL; | |
3207 } | |
3208 | |
3209 return JVMTI_ERROR_NONE; | |
3210 } /* end RawMonitorNotify */ | |
3211 | |
3212 | |
3213 // rmonitor - pre-checked for validity | |
3214 jvmtiError | |
3215 JvmtiEnv::RawMonitorNotifyAll(JvmtiRawMonitor * rmonitor) { | |
3216 int r; | |
3217 Thread* thread = Thread::current(); | |
3218 | |
3219 if (thread->is_Java_thread()) { | |
3220 JavaThread* current_thread = (JavaThread*)thread; | |
3221 ThreadInVMfromUnknown __tiv; | |
3222 r = rmonitor->raw_notifyAll(current_thread); | |
3223 } else { | |
3224 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
3225 r = rmonitor->raw_notifyAll(thread); | |
3226 } else { | |
3227 ShouldNotReachHere(); | |
3228 } | |
3229 } | |
3230 | |
3231 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
3232 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3233 } | |
3234 assert(r == ObjectMonitor::OM_OK, "raw_notifyAll should have worked"); | |
3235 if (r != ObjectMonitor::OM_OK) { // robustness | |
3236 return JVMTI_ERROR_INTERNAL; | |
3237 } | |
3238 | |
3239 return JVMTI_ERROR_NONE; | |
3240 } /* end RawMonitorNotifyAll */ | |
3241 | |
3242 | |
3243 // | |
3244 // JNI Function Interception functions | |
3245 // | |
3246 | |
3247 | |
3248 // function_table - pre-checked for NULL | |
3249 jvmtiError | |
3250 JvmtiEnv::SetJNIFunctionTable(const jniNativeInterface* function_table) { | |
3251 // Copy jni function table at safepoint. | |
3252 VM_JNIFunctionTableCopier copier(function_table); | |
3253 VMThread::execute(&copier); | |
3254 | |
3255 return JVMTI_ERROR_NONE; | |
3256 } /* end SetJNIFunctionTable */ | |
3257 | |
3258 | |
3259 // function_table - pre-checked for NULL | |
3260 jvmtiError | |
3261 JvmtiEnv::GetJNIFunctionTable(jniNativeInterface** function_table) { | |
3262 *function_table=(jniNativeInterface*)jvmtiMalloc(sizeof(jniNativeInterface)); | |
3263 if (*function_table == NULL) | |
3264 return JVMTI_ERROR_OUT_OF_MEMORY; | |
3265 memcpy(*function_table,(JavaThread::current())->get_jni_functions(),sizeof(jniNativeInterface)); | |
3266 return JVMTI_ERROR_NONE; | |
3267 } /* end GetJNIFunctionTable */ | |
3268 | |
3269 | |
3270 // | |
3271 // Event Management functions | |
3272 // | |
3273 | |
3274 jvmtiError | |
3275 JvmtiEnv::GenerateEvents(jvmtiEvent event_type) { | |
3276 // can only generate two event types | |
3277 if (event_type != JVMTI_EVENT_COMPILED_METHOD_LOAD && | |
3278 event_type != JVMTI_EVENT_DYNAMIC_CODE_GENERATED) { | |
3279 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
3280 } | |
3281 | |
3282 // for compiled_method_load events we must check that the environment | |
3283 // has the can_generate_compiled_method_load_events capability. | |
3284 if (event_type == JVMTI_EVENT_COMPILED_METHOD_LOAD) { | |
3285 if (get_capabilities()->can_generate_compiled_method_load_events == 0) { | |
3286 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; | |
3287 } | |
3288 return JvmtiCodeBlobEvents::generate_compiled_method_load_events(this); | |
3289 } else { | |
3290 return JvmtiCodeBlobEvents::generate_dynamic_code_events(this); | |
3291 } | |
3292 | |
3293 } /* end GenerateEvents */ | |
3294 | |
3295 | |
3296 // | |
3297 // Extension Mechanism functions | |
3298 // | |
3299 | |
3300 // extension_count_ptr - pre-checked for NULL | |
3301 // extensions - pre-checked for NULL | |
3302 jvmtiError | |
3303 JvmtiEnv::GetExtensionFunctions(jint* extension_count_ptr, jvmtiExtensionFunctionInfo** extensions) { | |
3304 return JvmtiExtensions::get_functions(this, extension_count_ptr, extensions); | |
3305 } /* end GetExtensionFunctions */ | |
3306 | |
3307 | |
3308 // extension_count_ptr - pre-checked for NULL | |
3309 // extensions - pre-checked for NULL | |
3310 jvmtiError | |
3311 JvmtiEnv::GetExtensionEvents(jint* extension_count_ptr, jvmtiExtensionEventInfo** extensions) { | |
3312 return JvmtiExtensions::get_events(this, extension_count_ptr, extensions); | |
3313 } /* end GetExtensionEvents */ | |
3314 | |
3315 | |
3316 // callback - NULL is a valid value, must be checked | |
3317 jvmtiError | |
3318 JvmtiEnv::SetExtensionEventCallback(jint extension_event_index, jvmtiExtensionEvent callback) { | |
3319 return JvmtiExtensions::set_event_callback(this, extension_event_index, callback); | |
3320 } /* end SetExtensionEventCallback */ | |
3321 | |
3322 // | |
3323 // Timers functions | |
3324 // | |
3325 | |
3326 // info_ptr - pre-checked for NULL | |
3327 jvmtiError | |
3328 JvmtiEnv::GetCurrentThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) { | |
3329 os::current_thread_cpu_time_info(info_ptr); | |
3330 return JVMTI_ERROR_NONE; | |
3331 } /* end GetCurrentThreadCpuTimerInfo */ | |
3332 | |
3333 | |
3334 // nanos_ptr - pre-checked for NULL | |
3335 jvmtiError | |
3336 JvmtiEnv::GetCurrentThreadCpuTime(jlong* nanos_ptr) { | |
3337 *nanos_ptr = os::current_thread_cpu_time(); | |
3338 return JVMTI_ERROR_NONE; | |
3339 } /* end GetCurrentThreadCpuTime */ | |
3340 | |
3341 | |
3342 // info_ptr - pre-checked for NULL | |
3343 jvmtiError | |
3344 JvmtiEnv::GetThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) { | |
3345 os::thread_cpu_time_info(info_ptr); | |
3346 return JVMTI_ERROR_NONE; | |
3347 } /* end GetThreadCpuTimerInfo */ | |
3348 | |
3349 | |
3350 // Threads_lock NOT held, java_thread not protected by lock | |
3351 // java_thread - pre-checked | |
3352 // nanos_ptr - pre-checked for NULL | |
3353 jvmtiError | |
3354 JvmtiEnv::GetThreadCpuTime(JavaThread* java_thread, jlong* nanos_ptr) { | |
3355 *nanos_ptr = os::thread_cpu_time(java_thread); | |
3356 return JVMTI_ERROR_NONE; | |
3357 } /* end GetThreadCpuTime */ | |
3358 | |
3359 | |
3360 // info_ptr - pre-checked for NULL | |
3361 jvmtiError | |
3362 JvmtiEnv::GetTimerInfo(jvmtiTimerInfo* info_ptr) { | |
3363 os::javaTimeNanos_info(info_ptr); | |
3364 return JVMTI_ERROR_NONE; | |
3365 } /* end GetTimerInfo */ | |
3366 | |
3367 | |
3368 // nanos_ptr - pre-checked for NULL | |
3369 jvmtiError | |
3370 JvmtiEnv::GetTime(jlong* nanos_ptr) { | |
3371 *nanos_ptr = os::javaTimeNanos(); | |
3372 return JVMTI_ERROR_NONE; | |
3373 } /* end GetTime */ | |
3374 | |
3375 | |
3376 // processor_count_ptr - pre-checked for NULL | |
3377 jvmtiError | |
3378 JvmtiEnv::GetAvailableProcessors(jint* processor_count_ptr) { | |
3379 *processor_count_ptr = os::active_processor_count(); | |
3380 return JVMTI_ERROR_NONE; | |
3381 } /* end GetAvailableProcessors */ | |
3382 | |
3383 // | |
3384 // System Properties functions | |
3385 // | |
3386 | |
3387 // count_ptr - pre-checked for NULL | |
3388 // property_ptr - pre-checked for NULL | |
3389 jvmtiError | |
3390 JvmtiEnv::GetSystemProperties(jint* count_ptr, char*** property_ptr) { | |
3391 jvmtiError err = JVMTI_ERROR_NONE; | |
3392 | |
3393 *count_ptr = Arguments::PropertyList_count(Arguments::system_properties()); | |
3394 | |
3395 err = allocate(*count_ptr * sizeof(char *), (unsigned char **)property_ptr); | |
3396 if (err != JVMTI_ERROR_NONE) { | |
3397 return err; | |
3398 } | |
3399 int i = 0 ; | |
3400 for (SystemProperty* p = Arguments::system_properties(); p != NULL && i < *count_ptr; p = p->next(), i++) { | |
3401 const char *key = p->key(); | |
3402 char **tmp_value = *property_ptr+i; | |
3403 err = allocate((strlen(key)+1) * sizeof(char), (unsigned char**)tmp_value); | |
3404 if (err == JVMTI_ERROR_NONE) { | |
3405 strcpy(*tmp_value, key); | |
3406 } else { | |
3407 // clean up previously allocated memory. | |
3408 for (int j=0; j<i; j++) { | |
3409 Deallocate((unsigned char*)*property_ptr+j); | |
3410 } | |
3411 Deallocate((unsigned char*)property_ptr); | |
3412 break; | |
3413 } | |
3414 } | |
3415 return err; | |
3416 } /* end GetSystemProperties */ | |
3417 | |
3418 | |
3419 // property - pre-checked for NULL | |
3420 // value_ptr - pre-checked for NULL | |
3421 jvmtiError | |
3422 JvmtiEnv::GetSystemProperty(const char* property, char** value_ptr) { | |
3423 jvmtiError err = JVMTI_ERROR_NONE; | |
3424 const char *value; | |
3425 | |
3426 value = Arguments::PropertyList_get_value(Arguments::system_properties(), property); | |
3427 if (value == NULL) { | |
3428 err = JVMTI_ERROR_NOT_AVAILABLE; | |
3429 } else { | |
3430 err = allocate((strlen(value)+1) * sizeof(char), (unsigned char **)value_ptr); | |
3431 if (err == JVMTI_ERROR_NONE) { | |
3432 strcpy(*value_ptr, value); | |
3433 } | |
3434 } | |
3435 return err; | |
3436 } /* end GetSystemProperty */ | |
3437 | |
3438 | |
3439 // property - pre-checked for NULL | |
3440 // value - NULL is a valid value, must be checked | |
3441 jvmtiError | |
2100
b1a2afa37ec4
7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents:
2019
diff
changeset
|
3442 JvmtiEnv::SetSystemProperty(const char* property, const char* value_ptr) { |
0 | 3443 jvmtiError err =JVMTI_ERROR_NOT_AVAILABLE; |
3444 | |
3445 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
3446 if (strcmp(property, p->key()) == 0) { | |
2100
b1a2afa37ec4
7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents:
2019
diff
changeset
|
3447 if (p->set_value((char *)value_ptr)) { |
0 | 3448 err = JVMTI_ERROR_NONE; |
3449 } | |
3450 } | |
3451 } | |
3452 return err; | |
3453 } /* end SetSystemProperty */ | |
3454 | |
3455 #endif // !JVMTI_KERNEL |