Mercurial > hg > graal-compiler
annotate src/share/vm/prims/jvmtiEnv.cpp @ 14752:311bf6c7488b
revert some changes to match upstream files
author | twisti |
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date | Tue, 25 Mar 2014 16:25:02 -0700 |
parents | 92aa6797d639 |
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rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2003, 2014, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/systemDictionary.hpp" | |
27 #include "classfile/vmSymbols.hpp" | |
28 #include "interpreter/bytecodeStream.hpp" | |
29 #include "interpreter/interpreter.hpp" | |
30 #include "jvmtifiles/jvmtiEnv.hpp" | |
31 #include "memory/resourceArea.hpp" | |
32 #include "memory/universe.inline.hpp" | |
33 #include "oops/instanceKlass.hpp" | |
34 #include "prims/jniCheck.hpp" | |
35 #include "prims/jvm_misc.hpp" | |
36 #include "prims/jvmtiAgentThread.hpp" | |
37 #include "prims/jvmtiClassFileReconstituter.hpp" | |
38 #include "prims/jvmtiCodeBlobEvents.hpp" | |
39 #include "prims/jvmtiExtensions.hpp" | |
40 #include "prims/jvmtiGetLoadedClasses.hpp" | |
41 #include "prims/jvmtiImpl.hpp" | |
42 #include "prims/jvmtiManageCapabilities.hpp" | |
43 #include "prims/jvmtiRawMonitor.hpp" | |
44 #include "prims/jvmtiRedefineClasses.hpp" | |
45 #include "prims/jvmtiTagMap.hpp" | |
46 #include "prims/jvmtiThreadState.inline.hpp" | |
47 #include "prims/jvmtiUtil.hpp" | |
48 #include "runtime/arguments.hpp" | |
49 #include "runtime/deoptimization.hpp" | |
50 #include "runtime/interfaceSupport.hpp" | |
51 #include "runtime/javaCalls.hpp" | |
52 #include "runtime/jfieldIDWorkaround.hpp" | |
53 #include "runtime/osThread.hpp" | |
54 #include "runtime/reflectionUtils.hpp" | |
55 #include "runtime/signature.hpp" | |
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56 #include "runtime/thread.inline.hpp" |
1972 | 57 #include "runtime/vframe.hpp" |
58 #include "runtime/vmThread.hpp" | |
59 #include "services/threadService.hpp" | |
60 #include "utilities/exceptions.hpp" | |
61 #include "utilities/preserveException.hpp" | |
0 | 62 |
63 | |
64 #define FIXLATER 0 // REMOVE this when completed. | |
65 | |
66 // FIXLATER: hook into JvmtiTrace | |
67 #define TraceJVMTICalls false | |
68 | |
1121 | 69 JvmtiEnv::JvmtiEnv(jint version) : JvmtiEnvBase(version) { |
0 | 70 } |
71 | |
72 JvmtiEnv::~JvmtiEnv() { | |
73 } | |
74 | |
75 JvmtiEnv* | |
1121 | 76 JvmtiEnv::create_a_jvmti(jint version) { |
77 return new JvmtiEnv(version); | |
0 | 78 } |
79 | |
80 // VM operation class to copy jni function table at safepoint. | |
81 // More than one java threads or jvmti agents may be reading/ | |
82 // modifying jni function tables. To reduce the risk of bad | |
83 // interaction b/w these threads it is copied at safepoint. | |
84 class VM_JNIFunctionTableCopier : public VM_Operation { | |
85 private: | |
86 const struct JNINativeInterface_ *_function_table; | |
87 public: | |
88 VM_JNIFunctionTableCopier(const struct JNINativeInterface_ *func_tbl) { | |
89 _function_table = func_tbl; | |
90 }; | |
91 | |
92 VMOp_Type type() const { return VMOp_JNIFunctionTableCopier; } | |
93 void doit() { | |
94 copy_jni_function_table(_function_table); | |
95 }; | |
96 }; | |
97 | |
98 // | |
99 // Do not change the "prefix" marker below, everything above it is copied | |
100 // unchanged into the filled stub, everything below is controlled by the | |
101 // stub filler (only method bodies are carried forward, and then only for | |
102 // functionality still in the spec). | |
103 // | |
104 // end file prefix | |
105 | |
106 // | |
107 // Memory Management functions | |
108 // | |
109 | |
110 // mem_ptr - pre-checked for NULL | |
111 jvmtiError | |
112 JvmtiEnv::Allocate(jlong size, unsigned char** mem_ptr) { | |
113 return allocate(size, mem_ptr); | |
114 } /* end Allocate */ | |
115 | |
116 | |
117 // mem - NULL is a valid value, must be checked | |
118 jvmtiError | |
119 JvmtiEnv::Deallocate(unsigned char* mem) { | |
120 return deallocate(mem); | |
121 } /* end Deallocate */ | |
122 | |
123 // Threads_lock NOT held, java_thread not protected by lock | |
124 // java_thread - pre-checked | |
125 // data - NULL is a valid value, must be checked | |
126 jvmtiError | |
127 JvmtiEnv::SetThreadLocalStorage(JavaThread* java_thread, const void* data) { | |
128 JvmtiThreadState* state = java_thread->jvmti_thread_state(); | |
129 if (state == NULL) { | |
130 if (data == NULL) { | |
131 // leaving state unset same as data set to NULL | |
132 return JVMTI_ERROR_NONE; | |
133 } | |
134 // otherwise, create the state | |
135 state = JvmtiThreadState::state_for(java_thread); | |
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136 if (state == NULL) { |
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137 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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138 } |
0 | 139 } |
140 state->env_thread_state(this)->set_agent_thread_local_storage_data((void*)data); | |
141 return JVMTI_ERROR_NONE; | |
142 } /* end SetThreadLocalStorage */ | |
143 | |
144 | |
145 // Threads_lock NOT held | |
146 // thread - NOT pre-checked | |
147 // data_ptr - pre-checked for NULL | |
148 jvmtiError | |
149 JvmtiEnv::GetThreadLocalStorage(jthread thread, void** data_ptr) { | |
150 JavaThread* current_thread = JavaThread::current(); | |
151 if (thread == NULL) { | |
152 JvmtiThreadState* state = current_thread->jvmti_thread_state(); | |
153 *data_ptr = (state == NULL) ? NULL : | |
154 state->env_thread_state(this)->get_agent_thread_local_storage_data(); | |
155 } else { | |
156 | |
157 // jvmti_GetThreadLocalStorage is "in native" and doesn't transition | |
158 // the thread to _thread_in_vm. However, when the TLS for a thread | |
159 // other than the current thread is required we need to transition | |
160 // from native so as to resolve the jthread. | |
161 | |
162 ThreadInVMfromNative __tiv(current_thread); | |
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163 VM_ENTRY_BASE(jvmtiError, JvmtiEnv::GetThreadLocalStorage , current_thread) |
0 | 164 debug_only(VMNativeEntryWrapper __vew;) |
165 | |
166 oop thread_oop = JNIHandles::resolve_external_guard(thread); | |
167 if (thread_oop == NULL) { | |
168 return JVMTI_ERROR_INVALID_THREAD; | |
169 } | |
1142 | 170 if (!thread_oop->is_a(SystemDictionary::Thread_klass())) { |
0 | 171 return JVMTI_ERROR_INVALID_THREAD; |
172 } | |
173 JavaThread* java_thread = java_lang_Thread::thread(thread_oop); | |
174 if (java_thread == NULL) { | |
175 return JVMTI_ERROR_THREAD_NOT_ALIVE; | |
176 } | |
177 JvmtiThreadState* state = java_thread->jvmti_thread_state(); | |
178 *data_ptr = (state == NULL) ? NULL : | |
179 state->env_thread_state(this)->get_agent_thread_local_storage_data(); | |
180 } | |
181 return JVMTI_ERROR_NONE; | |
182 } /* end GetThreadLocalStorage */ | |
183 | |
184 // | |
185 // Class functions | |
186 // | |
187 | |
188 // class_count_ptr - pre-checked for NULL | |
189 // classes_ptr - pre-checked for NULL | |
190 jvmtiError | |
191 JvmtiEnv::GetLoadedClasses(jint* class_count_ptr, jclass** classes_ptr) { | |
192 return JvmtiGetLoadedClasses::getLoadedClasses(this, class_count_ptr, classes_ptr); | |
193 } /* end GetLoadedClasses */ | |
194 | |
195 | |
196 // initiating_loader - NULL is a valid value, must be checked | |
197 // class_count_ptr - pre-checked for NULL | |
198 // classes_ptr - pre-checked for NULL | |
199 jvmtiError | |
200 JvmtiEnv::GetClassLoaderClasses(jobject initiating_loader, jint* class_count_ptr, jclass** classes_ptr) { | |
201 return JvmtiGetLoadedClasses::getClassLoaderClasses(this, initiating_loader, | |
202 class_count_ptr, classes_ptr); | |
203 } /* end GetClassLoaderClasses */ | |
204 | |
205 // k_mirror - may be primitive, this must be checked | |
206 // is_modifiable_class_ptr - pre-checked for NULL | |
207 jvmtiError | |
208 JvmtiEnv::IsModifiableClass(oop k_mirror, jboolean* is_modifiable_class_ptr) { | |
209 *is_modifiable_class_ptr = VM_RedefineClasses::is_modifiable_class(k_mirror)? | |
210 JNI_TRUE : JNI_FALSE; | |
211 return JVMTI_ERROR_NONE; | |
212 } /* end IsModifiableClass */ | |
213 | |
214 // class_count - pre-checked to be greater than or equal to 0 | |
215 // classes - pre-checked for NULL | |
216 jvmtiError | |
217 JvmtiEnv::RetransformClasses(jint class_count, const jclass* classes) { | |
218 //TODO: add locking | |
219 | |
220 int index; | |
221 JavaThread* current_thread = JavaThread::current(); | |
222 ResourceMark rm(current_thread); | |
223 | |
224 jvmtiClassDefinition* class_definitions = | |
225 NEW_RESOURCE_ARRAY(jvmtiClassDefinition, class_count); | |
226 NULL_CHECK(class_definitions, JVMTI_ERROR_OUT_OF_MEMORY); | |
227 | |
228 for (index = 0; index < class_count; index++) { | |
229 HandleMark hm(current_thread); | |
230 | |
231 jclass jcls = classes[index]; | |
232 oop k_mirror = JNIHandles::resolve_external_guard(jcls); | |
233 if (k_mirror == NULL) { | |
234 return JVMTI_ERROR_INVALID_CLASS; | |
235 } | |
1142 | 236 if (!k_mirror->is_a(SystemDictionary::Class_klass())) { |
0 | 237 return JVMTI_ERROR_INVALID_CLASS; |
238 } | |
239 | |
240 if (java_lang_Class::is_primitive(k_mirror)) { | |
241 return JVMTI_ERROR_UNMODIFIABLE_CLASS; | |
242 } | |
243 | |
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244 Klass* k_oop = java_lang_Class::as_Klass(k_mirror); |
0 | 245 KlassHandle klass(current_thread, k_oop); |
246 | |
247 jint status = klass->jvmti_class_status(); | |
248 if (status & (JVMTI_CLASS_STATUS_ERROR)) { | |
249 return JVMTI_ERROR_INVALID_CLASS; | |
250 } | |
251 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { | |
252 return JVMTI_ERROR_UNMODIFIABLE_CLASS; | |
253 } | |
254 | |
255 instanceKlassHandle ikh(current_thread, k_oop); | |
256 if (ikh->get_cached_class_file_bytes() == NULL) { | |
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257 // Not cached, we need to reconstitute the class file from the |
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258 // VM representation. We don't attach the reconstituted class |
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259 // bytes to the InstanceKlass here because they have not been |
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260 // validated and we're not at a safepoint. |
0 | 261 constantPoolHandle constants(current_thread, ikh->constants()); |
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262 MonitorLockerEx ml(constants->lock()); // lock constant pool while we query it |
0 | 263 |
264 JvmtiClassFileReconstituter reconstituter(ikh); | |
265 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
266 return reconstituter.get_error(); | |
267 } | |
268 | |
269 class_definitions[index].class_byte_count = (jint)reconstituter.class_file_size(); | |
270 class_definitions[index].class_bytes = (unsigned char*) | |
271 reconstituter.class_file_bytes(); | |
272 } else { | |
273 // it is cached, get it from the cache | |
274 class_definitions[index].class_byte_count = ikh->get_cached_class_file_len(); | |
275 class_definitions[index].class_bytes = ikh->get_cached_class_file_bytes(); | |
276 } | |
277 class_definitions[index].klass = jcls; | |
278 } | |
279 VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_retransform); | |
280 VMThread::execute(&op); | |
281 return (op.check_error()); | |
282 } /* end RetransformClasses */ | |
283 | |
284 | |
285 // class_count - pre-checked to be greater than or equal to 0 | |
286 // class_definitions - pre-checked for NULL | |
287 jvmtiError | |
288 JvmtiEnv::RedefineClasses(jint class_count, const jvmtiClassDefinition* class_definitions) { | |
289 //TODO: add locking | |
290 VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_redefine); | |
291 VMThread::execute(&op); | |
292 return (op.check_error()); | |
293 } /* end RedefineClasses */ | |
294 | |
295 | |
296 // | |
297 // Object functions | |
298 // | |
299 | |
300 // size_ptr - pre-checked for NULL | |
301 jvmtiError | |
302 JvmtiEnv::GetObjectSize(jobject object, jlong* size_ptr) { | |
303 oop mirror = JNIHandles::resolve_external_guard(object); | |
304 NULL_CHECK(mirror, JVMTI_ERROR_INVALID_OBJECT); | |
305 | |
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306 if (mirror->klass() == SystemDictionary::Class_klass() && |
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307 !java_lang_Class::is_primitive(mirror)) { |
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308 Klass* k = java_lang_Class::as_Klass(mirror); |
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309 assert(k != NULL, "class for non-primitive mirror must exist"); |
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310 *size_ptr = k->size() * wordSize; |
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311 } else { |
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312 *size_ptr = mirror->size() * wordSize; |
0 | 313 } |
314 return JVMTI_ERROR_NONE; | |
315 } /* end GetObjectSize */ | |
316 | |
317 // | |
318 // Method functions | |
319 // | |
320 | |
321 // prefix - NULL is a valid value, must be checked | |
322 jvmtiError | |
323 JvmtiEnv::SetNativeMethodPrefix(const char* prefix) { | |
324 return prefix == NULL? | |
325 SetNativeMethodPrefixes(0, NULL) : | |
326 SetNativeMethodPrefixes(1, (char**)&prefix); | |
327 } /* end SetNativeMethodPrefix */ | |
328 | |
329 | |
330 // prefix_count - pre-checked to be greater than or equal to 0 | |
331 // prefixes - pre-checked for NULL | |
332 jvmtiError | |
333 JvmtiEnv::SetNativeMethodPrefixes(jint prefix_count, char** prefixes) { | |
334 // Have to grab JVMTI thread state lock to be sure that some thread | |
335 // isn't accessing the prefixes at the same time we are setting them. | |
336 // No locks during VM bring-up. | |
337 if (Threads::number_of_threads() == 0) { | |
338 return set_native_method_prefixes(prefix_count, prefixes); | |
339 } else { | |
340 MutexLocker mu(JvmtiThreadState_lock); | |
341 return set_native_method_prefixes(prefix_count, prefixes); | |
342 } | |
343 } /* end SetNativeMethodPrefixes */ | |
344 | |
345 // | |
346 // Event Management functions | |
347 // | |
348 | |
349 // callbacks - NULL is a valid value, must be checked | |
350 // size_of_callbacks - pre-checked to be greater than or equal to 0 | |
351 jvmtiError | |
352 JvmtiEnv::SetEventCallbacks(const jvmtiEventCallbacks* callbacks, jint size_of_callbacks) { | |
353 JvmtiEventController::set_event_callbacks(this, callbacks, size_of_callbacks); | |
354 return JVMTI_ERROR_NONE; | |
355 } /* end SetEventCallbacks */ | |
356 | |
357 | |
358 // event_thread - NULL is a valid value, must be checked | |
359 jvmtiError | |
360 JvmtiEnv::SetEventNotificationMode(jvmtiEventMode mode, jvmtiEvent event_type, jthread event_thread, ...) { | |
361 JavaThread* java_thread = NULL; | |
362 if (event_thread != NULL) { | |
363 oop thread_oop = JNIHandles::resolve_external_guard(event_thread); | |
364 if (thread_oop == NULL) { | |
365 return JVMTI_ERROR_INVALID_THREAD; | |
366 } | |
1142 | 367 if (!thread_oop->is_a(SystemDictionary::Thread_klass())) { |
0 | 368 return JVMTI_ERROR_INVALID_THREAD; |
369 } | |
370 java_thread = java_lang_Thread::thread(thread_oop); | |
371 if (java_thread == NULL) { | |
372 return JVMTI_ERROR_THREAD_NOT_ALIVE; | |
373 } | |
374 } | |
375 | |
376 // event_type must be valid | |
377 if (!JvmtiEventController::is_valid_event_type(event_type)) { | |
378 return JVMTI_ERROR_INVALID_EVENT_TYPE; | |
379 } | |
380 | |
381 // global events cannot be controlled at thread level. | |
382 if (java_thread != NULL && JvmtiEventController::is_global_event(event_type)) { | |
383 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
384 } | |
385 | |
386 bool enabled = (mode == JVMTI_ENABLE); | |
387 | |
388 // assure that needed capabilities are present | |
389 if (enabled && !JvmtiUtil::has_event_capability(event_type, get_capabilities())) { | |
390 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; | |
391 } | |
392 | |
393 if (event_type == JVMTI_EVENT_CLASS_FILE_LOAD_HOOK && enabled) { | |
394 record_class_file_load_hook_enabled(); | |
395 } | |
396 JvmtiEventController::set_user_enabled(this, java_thread, event_type, enabled); | |
397 | |
398 return JVMTI_ERROR_NONE; | |
399 } /* end SetEventNotificationMode */ | |
400 | |
401 // | |
402 // Capability functions | |
403 // | |
404 | |
405 // capabilities_ptr - pre-checked for NULL | |
406 jvmtiError | |
407 JvmtiEnv::GetPotentialCapabilities(jvmtiCapabilities* capabilities_ptr) { | |
408 JvmtiManageCapabilities::get_potential_capabilities(get_capabilities(), | |
409 get_prohibited_capabilities(), | |
410 capabilities_ptr); | |
411 return JVMTI_ERROR_NONE; | |
412 } /* end GetPotentialCapabilities */ | |
413 | |
414 | |
415 // capabilities_ptr - pre-checked for NULL | |
416 jvmtiError | |
417 JvmtiEnv::AddCapabilities(const jvmtiCapabilities* capabilities_ptr) { | |
418 return JvmtiManageCapabilities::add_capabilities(get_capabilities(), | |
419 get_prohibited_capabilities(), | |
420 capabilities_ptr, | |
421 get_capabilities()); | |
422 } /* end AddCapabilities */ | |
423 | |
424 | |
425 // capabilities_ptr - pre-checked for NULL | |
426 jvmtiError | |
427 JvmtiEnv::RelinquishCapabilities(const jvmtiCapabilities* capabilities_ptr) { | |
428 JvmtiManageCapabilities::relinquish_capabilities(get_capabilities(), capabilities_ptr, get_capabilities()); | |
429 return JVMTI_ERROR_NONE; | |
430 } /* end RelinquishCapabilities */ | |
431 | |
432 | |
433 // capabilities_ptr - pre-checked for NULL | |
434 jvmtiError | |
435 JvmtiEnv::GetCapabilities(jvmtiCapabilities* capabilities_ptr) { | |
436 JvmtiManageCapabilities::copy_capabilities(get_capabilities(), capabilities_ptr); | |
437 return JVMTI_ERROR_NONE; | |
438 } /* end GetCapabilities */ | |
439 | |
440 // | |
441 // Class Loader Search functions | |
442 // | |
443 | |
444 // segment - pre-checked for NULL | |
445 jvmtiError | |
446 JvmtiEnv::AddToBootstrapClassLoaderSearch(const char* segment) { | |
447 jvmtiPhase phase = get_phase(); | |
448 if (phase == JVMTI_PHASE_ONLOAD) { | |
449 Arguments::append_sysclasspath(segment); | |
450 return JVMTI_ERROR_NONE; | |
1121 | 451 } else if (use_version_1_0_semantics()) { |
452 // This JvmtiEnv requested version 1.0 semantics and this function | |
453 // is only allowed in the ONLOAD phase in version 1.0 so we need to | |
454 // return an error here. | |
455 return JVMTI_ERROR_WRONG_PHASE; | |
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456 } else if (phase == JVMTI_PHASE_LIVE) { |
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457 // The phase is checked by the wrapper that called this function, |
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458 // but this thread could be racing with the thread that is |
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459 // terminating the VM so we check one more time. |
0 | 460 |
461 // create the zip entry | |
462 ClassPathZipEntry* zip_entry = ClassLoader::create_class_path_zip_entry(segment); | |
463 if (zip_entry == NULL) { | |
464 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
465 } | |
466 | |
467 // lock the loader | |
468 Thread* thread = Thread::current(); | |
469 HandleMark hm; | |
470 Handle loader_lock = Handle(thread, SystemDictionary::system_loader_lock()); | |
471 | |
472 ObjectLocker ol(loader_lock, thread); | |
473 | |
474 // add the jar file to the bootclasspath | |
475 if (TraceClassLoading) { | |
476 tty->print_cr("[Opened %s]", zip_entry->name()); | |
477 } | |
478 ClassLoader::add_to_list(zip_entry); | |
479 return JVMTI_ERROR_NONE; | |
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480 } else { |
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481 return JVMTI_ERROR_WRONG_PHASE; |
0 | 482 } |
483 | |
484 } /* end AddToBootstrapClassLoaderSearch */ | |
485 | |
486 | |
487 // segment - pre-checked for NULL | |
488 jvmtiError | |
489 JvmtiEnv::AddToSystemClassLoaderSearch(const char* segment) { | |
490 jvmtiPhase phase = get_phase(); | |
491 | |
492 if (phase == JVMTI_PHASE_ONLOAD) { | |
493 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
494 if (strcmp("java.class.path", p->key()) == 0) { | |
495 p->append_value(segment); | |
496 break; | |
497 } | |
498 } | |
499 return JVMTI_ERROR_NONE; | |
1120
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500 } else if (phase == JVMTI_PHASE_LIVE) { |
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501 // The phase is checked by the wrapper that called this function, |
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502 // but this thread could be racing with the thread that is |
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503 // terminating the VM so we check one more time. |
0 | 504 HandleMark hm; |
505 | |
506 // create the zip entry (which will open the zip file and hence | |
507 // check that the segment is indeed a zip file). | |
508 ClassPathZipEntry* zip_entry = ClassLoader::create_class_path_zip_entry(segment); | |
509 if (zip_entry == NULL) { | |
510 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
511 } | |
512 delete zip_entry; // no longer needed | |
513 | |
514 // lock the loader | |
515 Thread* THREAD = Thread::current(); | |
516 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); | |
517 | |
518 ObjectLocker ol(loader, THREAD); | |
519 | |
520 // need the path as java.lang.String | |
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521 Handle path = java_lang_String::create_from_platform_dependent_str(segment, THREAD); |
0 | 522 if (HAS_PENDING_EXCEPTION) { |
523 CLEAR_PENDING_EXCEPTION; | |
524 return JVMTI_ERROR_INTERNAL; | |
525 } | |
526 | |
527 instanceKlassHandle loader_ik(THREAD, loader->klass()); | |
528 | |
529 // Invoke the appendToClassPathForInstrumentation method - if the method | |
530 // is not found it means the loader doesn't support adding to the class path | |
531 // in the live phase. | |
532 { | |
533 JavaValue res(T_VOID); | |
534 JavaCalls::call_special(&res, | |
535 loader, | |
536 loader_ik, | |
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537 vmSymbols::appendToClassPathForInstrumentation_name(), |
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538 vmSymbols::appendToClassPathForInstrumentation_signature(), |
0 | 539 path, |
540 THREAD); | |
541 if (HAS_PENDING_EXCEPTION) { | |
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542 Symbol* ex_name = PENDING_EXCEPTION->klass()->name(); |
0 | 543 CLEAR_PENDING_EXCEPTION; |
544 | |
545 if (ex_name == vmSymbols::java_lang_NoSuchMethodError()) { | |
546 return JVMTI_ERROR_CLASS_LOADER_UNSUPPORTED; | |
547 } else { | |
548 return JVMTI_ERROR_INTERNAL; | |
549 } | |
550 } | |
551 } | |
552 | |
553 return JVMTI_ERROR_NONE; | |
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554 } else { |
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555 return JVMTI_ERROR_WRONG_PHASE; |
0 | 556 } |
557 } /* end AddToSystemClassLoaderSearch */ | |
558 | |
559 // | |
560 // General functions | |
561 // | |
562 | |
563 // phase_ptr - pre-checked for NULL | |
564 jvmtiError | |
565 JvmtiEnv::GetPhase(jvmtiPhase* phase_ptr) { | |
566 *phase_ptr = get_phase(); | |
567 return JVMTI_ERROR_NONE; | |
568 } /* end GetPhase */ | |
569 | |
570 | |
571 jvmtiError | |
572 JvmtiEnv::DisposeEnvironment() { | |
573 dispose(); | |
574 return JVMTI_ERROR_NONE; | |
575 } /* end DisposeEnvironment */ | |
576 | |
577 | |
578 // data - NULL is a valid value, must be checked | |
579 jvmtiError | |
580 JvmtiEnv::SetEnvironmentLocalStorage(const void* data) { | |
581 set_env_local_storage(data); | |
582 return JVMTI_ERROR_NONE; | |
583 } /* end SetEnvironmentLocalStorage */ | |
584 | |
585 | |
586 // data_ptr - pre-checked for NULL | |
587 jvmtiError | |
588 JvmtiEnv::GetEnvironmentLocalStorage(void** data_ptr) { | |
589 *data_ptr = (void*)get_env_local_storage(); | |
590 return JVMTI_ERROR_NONE; | |
591 } /* end GetEnvironmentLocalStorage */ | |
592 | |
593 // version_ptr - pre-checked for NULL | |
594 jvmtiError | |
595 JvmtiEnv::GetVersionNumber(jint* version_ptr) { | |
596 *version_ptr = JVMTI_VERSION; | |
597 return JVMTI_ERROR_NONE; | |
598 } /* end GetVersionNumber */ | |
599 | |
600 | |
601 // name_ptr - pre-checked for NULL | |
602 jvmtiError | |
603 JvmtiEnv::GetErrorName(jvmtiError error, char** name_ptr) { | |
604 if (error < JVMTI_ERROR_NONE || error > JVMTI_ERROR_MAX) { | |
605 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
606 } | |
607 const char *name = JvmtiUtil::error_name(error); | |
608 if (name == NULL) { | |
609 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
610 } | |
611 size_t len = strlen(name) + 1; | |
612 jvmtiError err = allocate(len, (unsigned char**)name_ptr); | |
613 if (err == JVMTI_ERROR_NONE) { | |
614 memcpy(*name_ptr, name, len); | |
615 } | |
616 return err; | |
617 } /* end GetErrorName */ | |
618 | |
619 | |
620 jvmtiError | |
621 JvmtiEnv::SetVerboseFlag(jvmtiVerboseFlag flag, jboolean value) { | |
622 switch (flag) { | |
623 case JVMTI_VERBOSE_OTHER: | |
624 // ignore | |
625 break; | |
626 case JVMTI_VERBOSE_CLASS: | |
627 TraceClassLoading = value != 0; | |
628 TraceClassUnloading = value != 0; | |
629 break; | |
630 case JVMTI_VERBOSE_GC: | |
631 PrintGC = value != 0; | |
632 break; | |
633 case JVMTI_VERBOSE_JNI: | |
634 PrintJNIResolving = value != 0; | |
635 break; | |
636 default: | |
637 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
638 }; | |
639 return JVMTI_ERROR_NONE; | |
640 } /* end SetVerboseFlag */ | |
641 | |
642 | |
643 // format_ptr - pre-checked for NULL | |
644 jvmtiError | |
645 JvmtiEnv::GetJLocationFormat(jvmtiJlocationFormat* format_ptr) { | |
646 *format_ptr = JVMTI_JLOCATION_JVMBCI; | |
647 return JVMTI_ERROR_NONE; | |
648 } /* end GetJLocationFormat */ | |
649 | |
650 // | |
651 // Thread functions | |
652 // | |
653 | |
654 // Threads_lock NOT held | |
655 // thread - NOT pre-checked | |
656 // thread_state_ptr - pre-checked for NULL | |
657 jvmtiError | |
658 JvmtiEnv::GetThreadState(jthread thread, jint* thread_state_ptr) { | |
659 jint state; | |
660 oop thread_oop; | |
661 JavaThread* thr; | |
662 | |
663 if (thread == NULL) { | |
664 thread_oop = JavaThread::current()->threadObj(); | |
665 } else { | |
666 thread_oop = JNIHandles::resolve_external_guard(thread); | |
667 } | |
668 | |
1142 | 669 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) { |
0 | 670 return JVMTI_ERROR_INVALID_THREAD; |
671 } | |
672 | |
673 // get most state bits | |
674 state = (jint)java_lang_Thread::get_thread_status(thread_oop); | |
675 | |
676 // add more state bits | |
677 thr = java_lang_Thread::thread(thread_oop); | |
678 if (thr != NULL) { | |
679 JavaThreadState jts = thr->thread_state(); | |
680 | |
681 if (thr->is_being_ext_suspended()) { | |
682 state |= JVMTI_THREAD_STATE_SUSPENDED; | |
683 } | |
684 if (jts == _thread_in_native) { | |
685 state |= JVMTI_THREAD_STATE_IN_NATIVE; | |
686 } | |
687 OSThread* osThread = thr->osthread(); | |
688 if (osThread != NULL && osThread->interrupted()) { | |
689 state |= JVMTI_THREAD_STATE_INTERRUPTED; | |
690 } | |
691 } | |
692 | |
693 *thread_state_ptr = state; | |
694 return JVMTI_ERROR_NONE; | |
695 } /* end GetThreadState */ | |
696 | |
697 | |
698 // thread_ptr - pre-checked for NULL | |
699 jvmtiError | |
700 JvmtiEnv::GetCurrentThread(jthread* thread_ptr) { | |
701 JavaThread* current_thread = JavaThread::current(); | |
702 *thread_ptr = (jthread)JNIHandles::make_local(current_thread, current_thread->threadObj()); | |
703 return JVMTI_ERROR_NONE; | |
704 } /* end GetCurrentThread */ | |
705 | |
706 | |
707 // threads_count_ptr - pre-checked for NULL | |
708 // threads_ptr - pre-checked for NULL | |
709 jvmtiError | |
710 JvmtiEnv::GetAllThreads(jint* threads_count_ptr, jthread** threads_ptr) { | |
711 int nthreads = 0; | |
712 Handle *thread_objs = NULL; | |
713 ResourceMark rm; | |
714 HandleMark hm; | |
715 | |
716 // enumerate threads (including agent threads) | |
717 ThreadsListEnumerator tle(Thread::current(), true); | |
718 nthreads = tle.num_threads(); | |
719 *threads_count_ptr = nthreads; | |
720 | |
721 if (nthreads == 0) { | |
722 *threads_ptr = NULL; | |
723 return JVMTI_ERROR_NONE; | |
724 } | |
725 | |
726 thread_objs = NEW_RESOURCE_ARRAY(Handle, nthreads); | |
727 NULL_CHECK(thread_objs, JVMTI_ERROR_OUT_OF_MEMORY); | |
728 | |
729 for (int i=0; i < nthreads; i++) { | |
730 thread_objs[i] = Handle(tle.get_threadObj(i)); | |
731 } | |
732 | |
733 // have to make global handles outside of Threads_lock | |
734 jthread *jthreads = new_jthreadArray(nthreads, thread_objs); | |
735 NULL_CHECK(jthreads, JVMTI_ERROR_OUT_OF_MEMORY); | |
736 | |
737 *threads_ptr = jthreads; | |
738 return JVMTI_ERROR_NONE; | |
739 } /* end GetAllThreads */ | |
740 | |
741 | |
742 // Threads_lock NOT held, java_thread not protected by lock | |
743 // java_thread - pre-checked | |
744 jvmtiError | |
745 JvmtiEnv::SuspendThread(JavaThread* java_thread) { | |
746 // don't allow hidden thread suspend request. | |
747 if (java_thread->is_hidden_from_external_view()) { | |
748 return (JVMTI_ERROR_NONE); | |
749 } | |
750 | |
751 { | |
752 MutexLockerEx ml(java_thread->SR_lock(), Mutex::_no_safepoint_check_flag); | |
753 if (java_thread->is_external_suspend()) { | |
754 // don't allow nested external suspend requests. | |
755 return (JVMTI_ERROR_THREAD_SUSPENDED); | |
756 } | |
757 if (java_thread->is_exiting()) { // thread is in the process of exiting | |
758 return (JVMTI_ERROR_THREAD_NOT_ALIVE); | |
759 } | |
760 java_thread->set_external_suspend(); | |
761 } | |
762 | |
763 if (!JvmtiSuspendControl::suspend(java_thread)) { | |
764 // the thread was in the process of exiting | |
765 return (JVMTI_ERROR_THREAD_NOT_ALIVE); | |
766 } | |
767 return JVMTI_ERROR_NONE; | |
768 } /* end SuspendThread */ | |
769 | |
770 | |
771 // request_count - pre-checked to be greater than or equal to 0 | |
772 // request_list - pre-checked for NULL | |
773 // results - pre-checked for NULL | |
774 jvmtiError | |
775 JvmtiEnv::SuspendThreadList(jint request_count, const jthread* request_list, jvmtiError* results) { | |
776 int needSafepoint = 0; // > 0 if we need a safepoint | |
777 for (int i = 0; i < request_count; i++) { | |
778 JavaThread *java_thread = get_JavaThread(request_list[i]); | |
779 if (java_thread == NULL) { | |
780 results[i] = JVMTI_ERROR_INVALID_THREAD; | |
781 continue; | |
782 } | |
783 // the thread has not yet run or has exited (not on threads list) | |
784 if (java_thread->threadObj() == NULL) { | |
785 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
786 continue; | |
787 } | |
788 if (java_lang_Thread::thread(java_thread->threadObj()) == NULL) { | |
789 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
790 continue; | |
791 } | |
792 // don't allow hidden thread suspend request. | |
793 if (java_thread->is_hidden_from_external_view()) { | |
794 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend | |
795 continue; | |
796 } | |
797 | |
798 { | |
799 MutexLockerEx ml(java_thread->SR_lock(), Mutex::_no_safepoint_check_flag); | |
800 if (java_thread->is_external_suspend()) { | |
801 // don't allow nested external suspend requests. | |
802 results[i] = JVMTI_ERROR_THREAD_SUSPENDED; | |
803 continue; | |
804 } | |
805 if (java_thread->is_exiting()) { // thread is in the process of exiting | |
806 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
807 continue; | |
808 } | |
809 java_thread->set_external_suspend(); | |
810 } | |
811 if (java_thread->thread_state() == _thread_in_native) { | |
812 // We need to try and suspend native threads here. Threads in | |
813 // other states will self-suspend on their next transition. | |
814 if (!JvmtiSuspendControl::suspend(java_thread)) { | |
815 // The thread was in the process of exiting. Force another | |
816 // safepoint to make sure that this thread transitions. | |
817 needSafepoint++; | |
818 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
819 continue; | |
820 } | |
821 } else { | |
822 needSafepoint++; | |
823 } | |
824 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend | |
825 } | |
826 if (needSafepoint > 0) { | |
827 VM_ForceSafepoint vfs; | |
828 VMThread::execute(&vfs); | |
829 } | |
830 // per-thread suspend results returned via results parameter | |
831 return JVMTI_ERROR_NONE; | |
832 } /* end SuspendThreadList */ | |
833 | |
834 | |
835 // Threads_lock NOT held, java_thread not protected by lock | |
836 // java_thread - pre-checked | |
837 jvmtiError | |
838 JvmtiEnv::ResumeThread(JavaThread* java_thread) { | |
839 // don't allow hidden thread resume request. | |
840 if (java_thread->is_hidden_from_external_view()) { | |
841 return JVMTI_ERROR_NONE; | |
842 } | |
843 | |
844 if (!java_thread->is_being_ext_suspended()) { | |
845 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
846 } | |
847 | |
848 if (!JvmtiSuspendControl::resume(java_thread)) { | |
849 return JVMTI_ERROR_INTERNAL; | |
850 } | |
851 return JVMTI_ERROR_NONE; | |
852 } /* end ResumeThread */ | |
853 | |
854 | |
855 // request_count - pre-checked to be greater than or equal to 0 | |
856 // request_list - pre-checked for NULL | |
857 // results - pre-checked for NULL | |
858 jvmtiError | |
859 JvmtiEnv::ResumeThreadList(jint request_count, const jthread* request_list, jvmtiError* results) { | |
860 for (int i = 0; i < request_count; i++) { | |
861 JavaThread *java_thread = get_JavaThread(request_list[i]); | |
862 if (java_thread == NULL) { | |
863 results[i] = JVMTI_ERROR_INVALID_THREAD; | |
864 continue; | |
865 } | |
866 // don't allow hidden thread resume request. | |
867 if (java_thread->is_hidden_from_external_view()) { | |
868 results[i] = JVMTI_ERROR_NONE; // indicate successful resume | |
869 continue; | |
870 } | |
871 if (!java_thread->is_being_ext_suspended()) { | |
872 results[i] = JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
873 continue; | |
874 } | |
875 | |
876 if (!JvmtiSuspendControl::resume(java_thread)) { | |
877 results[i] = JVMTI_ERROR_INTERNAL; | |
878 continue; | |
879 } | |
880 | |
881 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend | |
882 } | |
883 // per-thread resume results returned via results parameter | |
884 return JVMTI_ERROR_NONE; | |
885 } /* end ResumeThreadList */ | |
886 | |
887 | |
888 // Threads_lock NOT held, java_thread not protected by lock | |
889 // java_thread - pre-checked | |
890 jvmtiError | |
891 JvmtiEnv::StopThread(JavaThread* java_thread, jobject exception) { | |
892 oop e = JNIHandles::resolve_external_guard(exception); | |
893 NULL_CHECK(e, JVMTI_ERROR_NULL_POINTER); | |
894 | |
895 JavaThread::send_async_exception(java_thread->threadObj(), e); | |
896 | |
897 return JVMTI_ERROR_NONE; | |
898 | |
899 } /* end StopThread */ | |
900 | |
901 | |
902 // Threads_lock NOT held | |
903 // thread - NOT pre-checked | |
904 jvmtiError | |
905 JvmtiEnv::InterruptThread(jthread thread) { | |
906 oop thread_oop = JNIHandles::resolve_external_guard(thread); | |
1142 | 907 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) |
0 | 908 return JVMTI_ERROR_INVALID_THREAD; |
909 | |
910 JavaThread* current_thread = JavaThread::current(); | |
911 | |
912 // Todo: this is a duplicate of JVM_Interrupt; share code in future | |
913 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
914 MutexLockerEx ml(current_thread->threadObj() == thread_oop ? NULL : Threads_lock); | |
915 // We need to re-resolve the java_thread, since a GC might have happened during the | |
916 // acquire of the lock | |
917 | |
918 JavaThread* java_thread = java_lang_Thread::thread(JNIHandles::resolve_external_guard(thread)); | |
919 NULL_CHECK(java_thread, JVMTI_ERROR_THREAD_NOT_ALIVE); | |
920 | |
921 Thread::interrupt(java_thread); | |
922 | |
923 return JVMTI_ERROR_NONE; | |
924 } /* end InterruptThread */ | |
925 | |
926 | |
927 // Threads_lock NOT held | |
928 // thread - NOT pre-checked | |
929 // info_ptr - pre-checked for NULL | |
930 jvmtiError | |
931 JvmtiEnv::GetThreadInfo(jthread thread, jvmtiThreadInfo* info_ptr) { | |
932 ResourceMark rm; | |
933 HandleMark hm; | |
934 | |
935 JavaThread* current_thread = JavaThread::current(); | |
936 | |
937 // if thread is NULL the current thread is used | |
938 oop thread_oop; | |
939 if (thread == NULL) { | |
940 thread_oop = current_thread->threadObj(); | |
941 } else { | |
942 thread_oop = JNIHandles::resolve_external_guard(thread); | |
943 } | |
1142 | 944 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) |
0 | 945 return JVMTI_ERROR_INVALID_THREAD; |
946 | |
947 Handle thread_obj(current_thread, thread_oop); | |
948 typeArrayHandle name; | |
949 ThreadPriority priority; | |
950 Handle thread_group; | |
951 Handle context_class_loader; | |
952 bool is_daemon; | |
953 | |
954 { MutexLocker mu(Threads_lock); | |
955 | |
956 name = typeArrayHandle(current_thread, java_lang_Thread::name(thread_obj())); | |
957 priority = java_lang_Thread::priority(thread_obj()); | |
958 thread_group = Handle(current_thread, java_lang_Thread::threadGroup(thread_obj())); | |
959 is_daemon = java_lang_Thread::is_daemon(thread_obj()); | |
960 | |
961 oop loader = java_lang_Thread::context_class_loader(thread_obj()); | |
962 context_class_loader = Handle(current_thread, loader); | |
963 } | |
964 { const char *n; | |
965 | |
966 if (name() != NULL) { | |
967 n = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length()); | |
968 } else { | |
969 n = UNICODE::as_utf8(NULL, 0); | |
970 } | |
971 | |
972 info_ptr->name = (char *) jvmtiMalloc(strlen(n)+1); | |
973 if (info_ptr->name == NULL) | |
974 return JVMTI_ERROR_OUT_OF_MEMORY; | |
975 | |
976 strcpy(info_ptr->name, n); | |
977 } | |
978 info_ptr->is_daemon = is_daemon; | |
979 info_ptr->priority = priority; | |
980 | |
981 info_ptr->context_class_loader = (context_class_loader.is_null()) ? NULL : | |
982 jni_reference(context_class_loader); | |
983 info_ptr->thread_group = jni_reference(thread_group); | |
984 | |
985 return JVMTI_ERROR_NONE; | |
986 } /* end GetThreadInfo */ | |
987 | |
988 | |
989 // Threads_lock NOT held, java_thread not protected by lock | |
990 // java_thread - pre-checked | |
991 // owned_monitor_count_ptr - pre-checked for NULL | |
992 // owned_monitors_ptr - pre-checked for NULL | |
993 jvmtiError | |
994 JvmtiEnv::GetOwnedMonitorInfo(JavaThread* java_thread, jint* owned_monitor_count_ptr, jobject** owned_monitors_ptr) { | |
995 jvmtiError err = JVMTI_ERROR_NONE; | |
996 JavaThread* calling_thread = JavaThread::current(); | |
997 | |
998 // growable array of jvmti monitors info on the C-heap | |
999 GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list = | |
6197 | 1000 new (ResourceObj::C_HEAP, mtInternal) GrowableArray<jvmtiMonitorStackDepthInfo*>(1, true); |
0 | 1001 |
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1002 // It is only safe to perform the direct operation on the current |
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1003 // thread. All other usage needs to use a vm-safepoint-op for safety. |
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1004 if (java_thread == calling_thread) { |
0 | 1005 err = get_owned_monitors(calling_thread, java_thread, owned_monitors_list); |
1006 } else { | |
1007 // JVMTI get monitors info at safepoint. Do not require target thread to | |
1008 // be suspended. | |
1009 VM_GetOwnedMonitorInfo op(this, calling_thread, java_thread, owned_monitors_list); | |
1010 VMThread::execute(&op); | |
1011 err = op.result(); | |
1012 } | |
1013 jint owned_monitor_count = owned_monitors_list->length(); | |
1014 if (err == JVMTI_ERROR_NONE) { | |
1015 if ((err = allocate(owned_monitor_count * sizeof(jobject *), | |
1016 (unsigned char**)owned_monitors_ptr)) == JVMTI_ERROR_NONE) { | |
1017 // copy into the returned array | |
1018 for (int i = 0; i < owned_monitor_count; i++) { | |
1019 (*owned_monitors_ptr)[i] = | |
1020 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->monitor; | |
1021 } | |
1022 *owned_monitor_count_ptr = owned_monitor_count; | |
1023 } | |
1024 } | |
1025 // clean up. | |
1026 for (int i = 0; i < owned_monitor_count; i++) { | |
1027 deallocate((unsigned char*)owned_monitors_list->at(i)); | |
1028 } | |
1029 delete owned_monitors_list; | |
1030 | |
1031 return err; | |
1032 } /* end GetOwnedMonitorInfo */ | |
1033 | |
1034 | |
1035 // Threads_lock NOT held, java_thread not protected by lock | |
1036 // java_thread - pre-checked | |
1037 // monitor_info_count_ptr - pre-checked for NULL | |
1038 // monitor_info_ptr - pre-checked for NULL | |
1039 jvmtiError | |
1040 JvmtiEnv::GetOwnedMonitorStackDepthInfo(JavaThread* java_thread, jint* monitor_info_count_ptr, jvmtiMonitorStackDepthInfo** monitor_info_ptr) { | |
1041 jvmtiError err = JVMTI_ERROR_NONE; | |
1042 JavaThread* calling_thread = JavaThread::current(); | |
1043 | |
1044 // growable array of jvmti monitors info on the C-heap | |
1045 GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list = | |
6197 | 1046 new (ResourceObj::C_HEAP, mtInternal) GrowableArray<jvmtiMonitorStackDepthInfo*>(1, true); |
0 | 1047 |
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1048 // It is only safe to perform the direct operation on the current |
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1049 // thread. All other usage needs to use a vm-safepoint-op for safety. |
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1050 if (java_thread == calling_thread) { |
0 | 1051 err = get_owned_monitors(calling_thread, java_thread, owned_monitors_list); |
1052 } else { | |
1053 // JVMTI get owned monitors info at safepoint. Do not require target thread to | |
1054 // be suspended. | |
1055 VM_GetOwnedMonitorInfo op(this, calling_thread, java_thread, owned_monitors_list); | |
1056 VMThread::execute(&op); | |
1057 err = op.result(); | |
1058 } | |
1059 | |
1060 jint owned_monitor_count = owned_monitors_list->length(); | |
1061 if (err == JVMTI_ERROR_NONE) { | |
1062 if ((err = allocate(owned_monitor_count * sizeof(jvmtiMonitorStackDepthInfo), | |
1063 (unsigned char**)monitor_info_ptr)) == JVMTI_ERROR_NONE) { | |
1064 // copy to output array. | |
1065 for (int i = 0; i < owned_monitor_count; i++) { | |
1066 (*monitor_info_ptr)[i].monitor = | |
1067 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->monitor; | |
1068 (*monitor_info_ptr)[i].stack_depth = | |
1069 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->stack_depth; | |
1070 } | |
1071 } | |
1072 *monitor_info_count_ptr = owned_monitor_count; | |
1073 } | |
1074 | |
1075 // clean up. | |
1076 for (int i = 0; i < owned_monitor_count; i++) { | |
1077 deallocate((unsigned char*)owned_monitors_list->at(i)); | |
1078 } | |
1079 delete owned_monitors_list; | |
1080 | |
1081 return err; | |
1082 } /* end GetOwnedMonitorStackDepthInfo */ | |
1083 | |
1084 | |
1085 // Threads_lock NOT held, java_thread not protected by lock | |
1086 // java_thread - pre-checked | |
1087 // monitor_ptr - pre-checked for NULL | |
1088 jvmtiError | |
1089 JvmtiEnv::GetCurrentContendedMonitor(JavaThread* java_thread, jobject* monitor_ptr) { | |
1090 jvmtiError err = JVMTI_ERROR_NONE; | |
1091 JavaThread* calling_thread = JavaThread::current(); | |
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1092 |
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1093 // It is only safe to perform the direct operation on the current |
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1094 // thread. All other usage needs to use a vm-safepoint-op for safety. |
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1095 if (java_thread == calling_thread) { |
0 | 1096 err = get_current_contended_monitor(calling_thread, java_thread, monitor_ptr); |
1097 } else { | |
1098 // get contended monitor information at safepoint. | |
1099 VM_GetCurrentContendedMonitor op(this, calling_thread, java_thread, monitor_ptr); | |
1100 VMThread::execute(&op); | |
1101 err = op.result(); | |
1102 } | |
1103 return err; | |
1104 } /* end GetCurrentContendedMonitor */ | |
1105 | |
1106 | |
1107 // Threads_lock NOT held | |
1108 // thread - NOT pre-checked | |
1109 // proc - pre-checked for NULL | |
1110 // arg - NULL is a valid value, must be checked | |
1111 jvmtiError | |
1112 JvmtiEnv::RunAgentThread(jthread thread, jvmtiStartFunction proc, const void* arg, jint priority) { | |
1113 oop thread_oop = JNIHandles::resolve_external_guard(thread); | |
1142 | 1114 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) { |
0 | 1115 return JVMTI_ERROR_INVALID_THREAD; |
1116 } | |
1117 if (priority < JVMTI_THREAD_MIN_PRIORITY || priority > JVMTI_THREAD_MAX_PRIORITY) { | |
1118 return JVMTI_ERROR_INVALID_PRIORITY; | |
1119 } | |
1120 | |
1121 //Thread-self | |
1122 JavaThread* current_thread = JavaThread::current(); | |
1123 | |
1124 Handle thread_hndl(current_thread, thread_oop); | |
1125 { | |
1126 MutexLocker mu(Threads_lock); // grab Threads_lock | |
1127 | |
1128 JvmtiAgentThread *new_thread = new JvmtiAgentThread(this, proc, arg); | |
1129 | |
1130 // At this point it may be possible that no osthread was created for the | |
1131 // JavaThread due to lack of memory. | |
1132 if (new_thread == NULL || new_thread->osthread() == NULL) { | |
1133 if (new_thread) delete new_thread; | |
1134 return JVMTI_ERROR_OUT_OF_MEMORY; | |
1135 } | |
1136 | |
1137 java_lang_Thread::set_thread(thread_hndl(), new_thread); | |
1138 java_lang_Thread::set_priority(thread_hndl(), (ThreadPriority)priority); | |
1139 java_lang_Thread::set_daemon(thread_hndl()); | |
1140 | |
1141 new_thread->set_threadObj(thread_hndl()); | |
1142 Threads::add(new_thread); | |
1143 Thread::start(new_thread); | |
1144 } // unlock Threads_lock | |
1145 | |
1146 return JVMTI_ERROR_NONE; | |
1147 } /* end RunAgentThread */ | |
1148 | |
1149 // | |
1150 // Thread Group functions | |
1151 // | |
1152 | |
1153 // group_count_ptr - pre-checked for NULL | |
1154 // groups_ptr - pre-checked for NULL | |
1155 jvmtiError | |
1156 JvmtiEnv::GetTopThreadGroups(jint* group_count_ptr, jthreadGroup** groups_ptr) { | |
1157 JavaThread* current_thread = JavaThread::current(); | |
1158 | |
1159 // Only one top level thread group now. | |
1160 *group_count_ptr = 1; | |
1161 | |
1162 // Allocate memory to store global-refs to the thread groups. | |
1163 // Assume this area is freed by caller. | |
1164 *groups_ptr = (jthreadGroup *) jvmtiMalloc((sizeof(jthreadGroup)) * (*group_count_ptr)); | |
1165 | |
1166 NULL_CHECK(*groups_ptr, JVMTI_ERROR_OUT_OF_MEMORY); | |
1167 | |
1168 // Convert oop to Handle, then convert Handle to global-ref. | |
1169 { | |
1170 HandleMark hm(current_thread); | |
1171 Handle system_thread_group(current_thread, Universe::system_thread_group()); | |
1172 *groups_ptr[0] = jni_reference(system_thread_group); | |
1173 } | |
1174 | |
1175 return JVMTI_ERROR_NONE; | |
1176 } /* end GetTopThreadGroups */ | |
1177 | |
1178 | |
1179 // info_ptr - pre-checked for NULL | |
1180 jvmtiError | |
1181 JvmtiEnv::GetThreadGroupInfo(jthreadGroup group, jvmtiThreadGroupInfo* info_ptr) { | |
1182 ResourceMark rm; | |
1183 HandleMark hm; | |
1184 | |
1185 JavaThread* current_thread = JavaThread::current(); | |
1186 | |
1187 Handle group_obj (current_thread, JNIHandles::resolve_external_guard(group)); | |
1188 NULL_CHECK(group_obj(), JVMTI_ERROR_INVALID_THREAD_GROUP); | |
1189 | |
1190 typeArrayHandle name; | |
1191 Handle parent_group; | |
1192 bool is_daemon; | |
1193 ThreadPriority max_priority; | |
1194 | |
1195 { MutexLocker mu(Threads_lock); | |
1196 | |
1197 name = typeArrayHandle(current_thread, | |
1198 java_lang_ThreadGroup::name(group_obj())); | |
1199 parent_group = Handle(current_thread, java_lang_ThreadGroup::parent(group_obj())); | |
1200 is_daemon = java_lang_ThreadGroup::is_daemon(group_obj()); | |
1201 max_priority = java_lang_ThreadGroup::maxPriority(group_obj()); | |
1202 } | |
1203 | |
1204 info_ptr->is_daemon = is_daemon; | |
1205 info_ptr->max_priority = max_priority; | |
1206 info_ptr->parent = jni_reference(parent_group); | |
1207 | |
1208 if (name() != NULL) { | |
1209 const char* n = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length()); | |
1210 info_ptr->name = (char *)jvmtiMalloc(strlen(n)+1); | |
1211 NULL_CHECK(info_ptr->name, JVMTI_ERROR_OUT_OF_MEMORY); | |
1212 strcpy(info_ptr->name, n); | |
1213 } else { | |
1214 info_ptr->name = NULL; | |
1215 } | |
1216 | |
1217 return JVMTI_ERROR_NONE; | |
1218 } /* end GetThreadGroupInfo */ | |
1219 | |
1220 | |
1221 // thread_count_ptr - pre-checked for NULL | |
1222 // threads_ptr - pre-checked for NULL | |
1223 // group_count_ptr - pre-checked for NULL | |
1224 // groups_ptr - pre-checked for NULL | |
1225 jvmtiError | |
1226 JvmtiEnv::GetThreadGroupChildren(jthreadGroup group, jint* thread_count_ptr, jthread** threads_ptr, jint* group_count_ptr, jthreadGroup** groups_ptr) { | |
1227 JavaThread* current_thread = JavaThread::current(); | |
1228 oop group_obj = (oop) JNIHandles::resolve_external_guard(group); | |
1229 NULL_CHECK(group_obj, JVMTI_ERROR_INVALID_THREAD_GROUP); | |
1230 | |
1231 Handle *thread_objs = NULL; | |
1232 Handle *group_objs = NULL; | |
1233 int nthreads = 0; | |
1234 int ngroups = 0; | |
1235 int hidden_threads = 0; | |
1236 | |
1237 ResourceMark rm; | |
1238 HandleMark hm; | |
1239 | |
1240 Handle group_hdl(current_thread, group_obj); | |
1241 | |
1242 { MutexLocker mu(Threads_lock); | |
1243 | |
1244 nthreads = java_lang_ThreadGroup::nthreads(group_hdl()); | |
1245 ngroups = java_lang_ThreadGroup::ngroups(group_hdl()); | |
1246 | |
1247 if (nthreads > 0) { | |
1248 objArrayOop threads = java_lang_ThreadGroup::threads(group_hdl()); | |
1249 assert(nthreads <= threads->length(), "too many threads"); | |
1250 thread_objs = NEW_RESOURCE_ARRAY(Handle,nthreads); | |
1251 for (int i=0, j=0; i<nthreads; i++) { | |
1252 oop thread_obj = threads->obj_at(i); | |
1253 assert(thread_obj != NULL, "thread_obj is NULL"); | |
1254 JavaThread *javathread = java_lang_Thread::thread(thread_obj); | |
1255 // Filter out hidden java threads. | |
1256 if (javathread != NULL && javathread->is_hidden_from_external_view()) { | |
1257 hidden_threads++; | |
1258 continue; | |
1259 } | |
1260 thread_objs[j++] = Handle(current_thread, thread_obj); | |
1261 } | |
1262 nthreads -= hidden_threads; | |
1263 } | |
1264 if (ngroups > 0) { | |
1265 objArrayOop groups = java_lang_ThreadGroup::groups(group_hdl()); | |
1266 assert(ngroups <= groups->length(), "too many threads"); | |
1267 group_objs = NEW_RESOURCE_ARRAY(Handle,ngroups); | |
1268 for (int i=0; i<ngroups; i++) { | |
1269 oop group_obj = groups->obj_at(i); | |
1270 assert(group_obj != NULL, "group_obj != NULL"); | |
1271 group_objs[i] = Handle(current_thread, group_obj); | |
1272 } | |
1273 } | |
1274 } | |
1275 | |
1276 // have to make global handles outside of Threads_lock | |
1277 *group_count_ptr = ngroups; | |
1278 *thread_count_ptr = nthreads; | |
1279 *threads_ptr = new_jthreadArray(nthreads, thread_objs); | |
1280 *groups_ptr = new_jthreadGroupArray(ngroups, group_objs); | |
1281 if ((nthreads > 0) && (*threads_ptr == NULL)) { | |
1282 return JVMTI_ERROR_OUT_OF_MEMORY; | |
1283 } | |
1284 if ((ngroups > 0) && (*groups_ptr == NULL)) { | |
1285 return JVMTI_ERROR_OUT_OF_MEMORY; | |
1286 } | |
1287 | |
1288 return JVMTI_ERROR_NONE; | |
1289 } /* end GetThreadGroupChildren */ | |
1290 | |
1291 | |
1292 // | |
1293 // Stack Frame functions | |
1294 // | |
1295 | |
1296 // Threads_lock NOT held, java_thread not protected by lock | |
1297 // java_thread - pre-checked | |
1298 // max_frame_count - pre-checked to be greater than or equal to 0 | |
1299 // frame_buffer - pre-checked for NULL | |
1300 // count_ptr - pre-checked for NULL | |
1301 jvmtiError | |
1302 JvmtiEnv::GetStackTrace(JavaThread* java_thread, jint start_depth, jint max_frame_count, jvmtiFrameInfo* frame_buffer, jint* count_ptr) { | |
1303 jvmtiError err = JVMTI_ERROR_NONE; | |
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1304 |
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1306 // thread. All other usage needs to use a vm-safepoint-op for safety. |
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1307 if (java_thread == JavaThread::current()) { |
0 | 1308 err = get_stack_trace(java_thread, start_depth, max_frame_count, frame_buffer, count_ptr); |
1309 } else { | |
1310 // JVMTI get stack trace at safepoint. Do not require target thread to | |
1311 // be suspended. | |
1312 VM_GetStackTrace op(this, java_thread, start_depth, max_frame_count, frame_buffer, count_ptr); | |
1313 VMThread::execute(&op); | |
1314 err = op.result(); | |
1315 } | |
1316 | |
1317 return err; | |
1318 } /* end GetStackTrace */ | |
1319 | |
1320 | |
1321 // max_frame_count - pre-checked to be greater than or equal to 0 | |
1322 // stack_info_ptr - pre-checked for NULL | |
1323 // thread_count_ptr - pre-checked for NULL | |
1324 jvmtiError | |
1325 JvmtiEnv::GetAllStackTraces(jint max_frame_count, jvmtiStackInfo** stack_info_ptr, jint* thread_count_ptr) { | |
1326 jvmtiError err = JVMTI_ERROR_NONE; | |
1327 JavaThread* calling_thread = JavaThread::current(); | |
1328 | |
1329 // JVMTI get stack traces at safepoint. | |
1330 VM_GetAllStackTraces op(this, calling_thread, max_frame_count); | |
1331 VMThread::execute(&op); | |
1332 *thread_count_ptr = op.final_thread_count(); | |
1333 *stack_info_ptr = op.stack_info(); | |
1334 err = op.result(); | |
1335 return err; | |
1336 } /* end GetAllStackTraces */ | |
1337 | |
1338 | |
1339 // thread_count - pre-checked to be greater than or equal to 0 | |
1340 // thread_list - pre-checked for NULL | |
1341 // max_frame_count - pre-checked to be greater than or equal to 0 | |
1342 // stack_info_ptr - pre-checked for NULL | |
1343 jvmtiError | |
1344 JvmtiEnv::GetThreadListStackTraces(jint thread_count, const jthread* thread_list, jint max_frame_count, jvmtiStackInfo** stack_info_ptr) { | |
1345 jvmtiError err = JVMTI_ERROR_NONE; | |
1346 // JVMTI get stack traces at safepoint. | |
1347 VM_GetThreadListStackTraces op(this, thread_count, thread_list, max_frame_count); | |
1348 VMThread::execute(&op); | |
1349 err = op.result(); | |
1350 if (err == JVMTI_ERROR_NONE) { | |
1351 *stack_info_ptr = op.stack_info(); | |
1352 } | |
1353 return err; | |
1354 } /* end GetThreadListStackTraces */ | |
1355 | |
1356 | |
1357 // Threads_lock NOT held, java_thread not protected by lock | |
1358 // java_thread - pre-checked | |
1359 // count_ptr - pre-checked for NULL | |
1360 jvmtiError | |
1361 JvmtiEnv::GetFrameCount(JavaThread* java_thread, jint* count_ptr) { | |
1362 jvmtiError err = JVMTI_ERROR_NONE; | |
1363 | |
1364 // retrieve or create JvmtiThreadState. | |
1365 JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread); | |
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1366 if (state == NULL) { |
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1367 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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1368 } |
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1369 |
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1370 // It is only safe to perform the direct operation on the current |
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1371 // thread. All other usage needs to use a vm-safepoint-op for safety. |
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1372 if (java_thread == JavaThread::current()) { |
0 | 1373 err = get_frame_count(state, count_ptr); |
1374 } else { | |
1375 // get java stack frame count at safepoint. | |
1376 VM_GetFrameCount op(this, state, count_ptr); | |
1377 VMThread::execute(&op); | |
1378 err = op.result(); | |
1379 } | |
1380 return err; | |
1381 } /* end GetFrameCount */ | |
1382 | |
1383 | |
1384 // Threads_lock NOT held, java_thread not protected by lock | |
1385 // java_thread - pre-checked | |
1386 jvmtiError | |
1387 JvmtiEnv::PopFrame(JavaThread* java_thread) { | |
1388 JavaThread* current_thread = JavaThread::current(); | |
1389 HandleMark hm(current_thread); | |
1390 uint32_t debug_bits = 0; | |
1391 | |
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1392 // retrieve or create the state |
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1393 JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread); |
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1394 if (state == NULL) { |
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1395 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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1396 } |
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1397 |
0 | 1398 // Check if java_thread is fully suspended |
1399 if (!is_thread_fully_suspended(java_thread, true /* wait for suspend completion */, &debug_bits)) { | |
1400 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
1401 } | |
1402 // Check to see if a PopFrame was already in progress | |
1403 if (java_thread->popframe_condition() != JavaThread::popframe_inactive) { | |
1404 // Probably possible for JVMTI clients to trigger this, but the | |
1405 // JPDA backend shouldn't allow this to happen | |
1406 return JVMTI_ERROR_INTERNAL; | |
1407 } | |
1408 | |
1409 { | |
1410 // Was workaround bug | |
1411 // 4812902: popFrame hangs if the method is waiting at a synchronize | |
1412 // Catch this condition and return an error to avoid hanging. | |
1413 // Now JVMTI spec allows an implementation to bail out with an opaque frame error. | |
1414 OSThread* osThread = java_thread->osthread(); | |
1415 if (osThread->get_state() == MONITOR_WAIT) { | |
1416 return JVMTI_ERROR_OPAQUE_FRAME; | |
1417 } | |
1418 } | |
1419 | |
1420 { | |
1421 ResourceMark rm(current_thread); | |
1422 // Check if there are more than one Java frame in this thread, that the top two frames | |
1423 // are Java (not native) frames, and that there is no intervening VM frame | |
1424 int frame_count = 0; | |
1425 bool is_interpreted[2]; | |
1426 intptr_t *frame_sp[2]; | |
1427 // The 2-nd arg of constructor is needed to stop iterating at java entry frame. | |
1428 for (vframeStream vfs(java_thread, true); !vfs.at_end(); vfs.next()) { | |
1429 methodHandle mh(current_thread, vfs.method()); | |
1430 if (mh->is_native()) return(JVMTI_ERROR_OPAQUE_FRAME); | |
1431 is_interpreted[frame_count] = vfs.is_interpreted_frame(); | |
1432 frame_sp[frame_count] = vfs.frame_id(); | |
1433 if (++frame_count > 1) break; | |
1434 } | |
1435 if (frame_count < 2) { | |
1436 // We haven't found two adjacent non-native Java frames on the top. | |
1437 // There can be two situations here: | |
1438 // 1. There are no more java frames | |
1439 // 2. Two top java frames are separated by non-java native frames | |
1440 if(vframeFor(java_thread, 1) == NULL) { | |
1441 return JVMTI_ERROR_NO_MORE_FRAMES; | |
1442 } else { | |
1443 // Intervening non-java native or VM frames separate java frames. | |
1444 // Current implementation does not support this. See bug #5031735. | |
1445 // In theory it is possible to pop frames in such cases. | |
1446 return JVMTI_ERROR_OPAQUE_FRAME; | |
1447 } | |
1448 } | |
1449 | |
1450 // If any of the top 2 frames is a compiled one, need to deoptimize it | |
1451 for (int i = 0; i < 2; i++) { | |
1452 if (!is_interpreted[i]) { | |
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1453 Deoptimization::deoptimize_frame(java_thread, frame_sp[i]); |
0 | 1454 } |
1455 } | |
1456 | |
1457 // Update the thread state to reflect that the top frame is popped | |
1458 // so that cur_stack_depth is maintained properly and all frameIDs | |
1459 // are invalidated. | |
1460 // The current frame will be popped later when the suspended thread | |
1461 // is resumed and right before returning from VM to Java. | |
1462 // (see call_VM_base() in assembler_<cpu>.cpp). | |
1463 | |
1464 // It's fine to update the thread state here because no JVMTI events | |
1465 // shall be posted for this PopFrame. | |
1466 | |
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1467 state->update_for_pop_top_frame(); |
0 | 1468 java_thread->set_popframe_condition(JavaThread::popframe_pending_bit); |
1469 // Set pending step flag for this popframe and it is cleared when next | |
1470 // step event is posted. | |
1471 state->set_pending_step_for_popframe(); | |
1472 } | |
1473 | |
1474 return JVMTI_ERROR_NONE; | |
1475 } /* end PopFrame */ | |
1476 | |
1477 | |
1478 // Threads_lock NOT held, java_thread not protected by lock | |
1479 // java_thread - pre-checked | |
1480 // java_thread - unchecked | |
1481 // depth - pre-checked as non-negative | |
1482 // method_ptr - pre-checked for NULL | |
1483 // location_ptr - pre-checked for NULL | |
1484 jvmtiError | |
1485 JvmtiEnv::GetFrameLocation(JavaThread* java_thread, jint depth, jmethodID* method_ptr, jlocation* location_ptr) { | |
1486 jvmtiError err = JVMTI_ERROR_NONE; | |
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1487 |
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1488 // It is only safe to perform the direct operation on the current |
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1489 // thread. All other usage needs to use a vm-safepoint-op for safety. |
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1490 if (java_thread == JavaThread::current()) { |
0 | 1491 err = get_frame_location(java_thread, depth, method_ptr, location_ptr); |
1492 } else { | |
1493 // JVMTI get java stack frame location at safepoint. | |
1494 VM_GetFrameLocation op(this, java_thread, depth, method_ptr, location_ptr); | |
1495 VMThread::execute(&op); | |
1496 err = op.result(); | |
1497 } | |
1498 return err; | |
1499 } /* end GetFrameLocation */ | |
1500 | |
1501 | |
1502 // Threads_lock NOT held, java_thread not protected by lock | |
1503 // java_thread - pre-checked | |
1504 // java_thread - unchecked | |
1505 // depth - pre-checked as non-negative | |
1506 jvmtiError | |
1507 JvmtiEnv::NotifyFramePop(JavaThread* java_thread, jint depth) { | |
1508 ResourceMark rm; | |
1509 uint32_t debug_bits = 0; | |
1510 | |
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1511 JvmtiThreadState *state = JvmtiThreadState::state_for(java_thread); |
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1512 if (state == NULL) { |
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1513 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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1514 } |
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1515 |
0 | 1516 if (!JvmtiEnv::is_thread_fully_suspended(java_thread, true, &debug_bits)) { |
1517 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
1518 } | |
1519 | |
1520 if (TraceJVMTICalls) { | |
1521 JvmtiSuspendControl::print(); | |
1522 } | |
1523 | |
1524 vframe *vf = vframeFor(java_thread, depth); | |
1525 if (vf == NULL) { | |
1526 return JVMTI_ERROR_NO_MORE_FRAMES; | |
1527 } | |
1528 | |
1529 if (!vf->is_java_frame() || ((javaVFrame*) vf)->method()->is_native()) { | |
1530 return JVMTI_ERROR_OPAQUE_FRAME; | |
1531 } | |
1532 | |
1533 assert(vf->frame_pointer() != NULL, "frame pointer mustn't be NULL"); | |
1534 | |
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1535 int frame_number = state->count_frames() - depth; |
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1536 state->env_thread_state(this)->set_frame_pop(frame_number); |
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1537 |
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1538 return JVMTI_ERROR_NONE; |
0 | 1539 } /* end NotifyFramePop */ |
1540 | |
1541 | |
1542 // | |
1543 // Force Early Return functions | |
1544 // | |
1545 | |
1546 // Threads_lock NOT held, java_thread not protected by lock | |
1547 // java_thread - pre-checked | |
1548 jvmtiError | |
1549 JvmtiEnv::ForceEarlyReturnObject(JavaThread* java_thread, jobject value) { | |
1550 jvalue val; | |
1551 val.l = value; | |
1552 return force_early_return(java_thread, val, atos); | |
1553 } /* end ForceEarlyReturnObject */ | |
1554 | |
1555 | |
1556 // Threads_lock NOT held, java_thread not protected by lock | |
1557 // java_thread - pre-checked | |
1558 jvmtiError | |
1559 JvmtiEnv::ForceEarlyReturnInt(JavaThread* java_thread, jint value) { | |
1560 jvalue val; | |
1561 val.i = value; | |
1562 return force_early_return(java_thread, val, itos); | |
1563 } /* end ForceEarlyReturnInt */ | |
1564 | |
1565 | |
1566 // Threads_lock NOT held, java_thread not protected by lock | |
1567 // java_thread - pre-checked | |
1568 jvmtiError | |
1569 JvmtiEnv::ForceEarlyReturnLong(JavaThread* java_thread, jlong value) { | |
1570 jvalue val; | |
1571 val.j = value; | |
1572 return force_early_return(java_thread, val, ltos); | |
1573 } /* end ForceEarlyReturnLong */ | |
1574 | |
1575 | |
1576 // Threads_lock NOT held, java_thread not protected by lock | |
1577 // java_thread - pre-checked | |
1578 jvmtiError | |
1579 JvmtiEnv::ForceEarlyReturnFloat(JavaThread* java_thread, jfloat value) { | |
1580 jvalue val; | |
1581 val.f = value; | |
1582 return force_early_return(java_thread, val, ftos); | |
1583 } /* end ForceEarlyReturnFloat */ | |
1584 | |
1585 | |
1586 // Threads_lock NOT held, java_thread not protected by lock | |
1587 // java_thread - pre-checked | |
1588 jvmtiError | |
1589 JvmtiEnv::ForceEarlyReturnDouble(JavaThread* java_thread, jdouble value) { | |
1590 jvalue val; | |
1591 val.d = value; | |
1592 return force_early_return(java_thread, val, dtos); | |
1593 } /* end ForceEarlyReturnDouble */ | |
1594 | |
1595 | |
1596 // Threads_lock NOT held, java_thread not protected by lock | |
1597 // java_thread - pre-checked | |
1598 jvmtiError | |
1599 JvmtiEnv::ForceEarlyReturnVoid(JavaThread* java_thread) { | |
1600 jvalue val; | |
1601 val.j = 0L; | |
1602 return force_early_return(java_thread, val, vtos); | |
1603 } /* end ForceEarlyReturnVoid */ | |
1604 | |
1605 | |
1606 // | |
1607 // Heap functions | |
1608 // | |
1609 | |
1610 // klass - NULL is a valid value, must be checked | |
1611 // initial_object - NULL is a valid value, must be checked | |
1612 // callbacks - pre-checked for NULL | |
1613 // user_data - NULL is a valid value, must be checked | |
1614 jvmtiError | |
1615 JvmtiEnv::FollowReferences(jint heap_filter, jclass klass, jobject initial_object, const jvmtiHeapCallbacks* callbacks, const void* user_data) { | |
1616 // check klass if provided | |
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1617 Klass* k_oop = NULL; |
0 | 1618 if (klass != NULL) { |
1619 oop k_mirror = JNIHandles::resolve_external_guard(klass); | |
1620 if (k_mirror == NULL) { | |
1621 return JVMTI_ERROR_INVALID_CLASS; | |
1622 } | |
1623 if (java_lang_Class::is_primitive(k_mirror)) { | |
1624 return JVMTI_ERROR_NONE; | |
1625 } | |
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1626 k_oop = java_lang_Class::as_Klass(k_mirror); |
0 | 1627 if (k_oop == NULL) { |
1628 return JVMTI_ERROR_INVALID_CLASS; | |
1629 } | |
1630 } | |
1631 | |
1632 Thread *thread = Thread::current(); | |
1633 HandleMark hm(thread); | |
1634 KlassHandle kh (thread, k_oop); | |
1635 | |
1636 TraceTime t("FollowReferences", TraceJVMTIObjectTagging); | |
1637 JvmtiTagMap::tag_map_for(this)->follow_references(heap_filter, kh, initial_object, callbacks, user_data); | |
1638 return JVMTI_ERROR_NONE; | |
1639 } /* end FollowReferences */ | |
1640 | |
1641 | |
1642 // klass - NULL is a valid value, must be checked | |
1643 // callbacks - pre-checked for NULL | |
1644 // user_data - NULL is a valid value, must be checked | |
1645 jvmtiError | |
1646 JvmtiEnv::IterateThroughHeap(jint heap_filter, jclass klass, const jvmtiHeapCallbacks* callbacks, const void* user_data) { | |
1647 // check klass if provided | |
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1648 Klass* k_oop = NULL; |
0 | 1649 if (klass != NULL) { |
1650 oop k_mirror = JNIHandles::resolve_external_guard(klass); | |
1651 if (k_mirror == NULL) { | |
1652 return JVMTI_ERROR_INVALID_CLASS; | |
1653 } | |
1654 if (java_lang_Class::is_primitive(k_mirror)) { | |
1655 return JVMTI_ERROR_NONE; | |
1656 } | |
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1657 k_oop = java_lang_Class::as_Klass(k_mirror); |
0 | 1658 if (k_oop == NULL) { |
1659 return JVMTI_ERROR_INVALID_CLASS; | |
1660 } | |
1661 } | |
1662 | |
1663 Thread *thread = Thread::current(); | |
1664 HandleMark hm(thread); | |
1665 KlassHandle kh (thread, k_oop); | |
1666 | |
1667 TraceTime t("IterateThroughHeap", TraceJVMTIObjectTagging); | |
1668 JvmtiTagMap::tag_map_for(this)->iterate_through_heap(heap_filter, kh, callbacks, user_data); | |
1669 return JVMTI_ERROR_NONE; | |
1670 } /* end IterateThroughHeap */ | |
1671 | |
1672 | |
1673 // tag_ptr - pre-checked for NULL | |
1674 jvmtiError | |
1675 JvmtiEnv::GetTag(jobject object, jlong* tag_ptr) { | |
1676 oop o = JNIHandles::resolve_external_guard(object); | |
1677 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
1678 *tag_ptr = JvmtiTagMap::tag_map_for(this)->get_tag(object); | |
1679 return JVMTI_ERROR_NONE; | |
1680 } /* end GetTag */ | |
1681 | |
1682 | |
1683 jvmtiError | |
1684 JvmtiEnv::SetTag(jobject object, jlong tag) { | |
1685 oop o = JNIHandles::resolve_external_guard(object); | |
1686 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
1687 JvmtiTagMap::tag_map_for(this)->set_tag(object, tag); | |
1688 return JVMTI_ERROR_NONE; | |
1689 } /* end SetTag */ | |
1690 | |
1691 | |
1692 // tag_count - pre-checked to be greater than or equal to 0 | |
1693 // tags - pre-checked for NULL | |
1694 // count_ptr - pre-checked for NULL | |
1695 // object_result_ptr - NULL is a valid value, must be checked | |
1696 // tag_result_ptr - NULL is a valid value, must be checked | |
1697 jvmtiError | |
1698 JvmtiEnv::GetObjectsWithTags(jint tag_count, const jlong* tags, jint* count_ptr, jobject** object_result_ptr, jlong** tag_result_ptr) { | |
1699 TraceTime t("GetObjectsWithTags", TraceJVMTIObjectTagging); | |
1700 return JvmtiTagMap::tag_map_for(this)->get_objects_with_tags((jlong*)tags, tag_count, count_ptr, object_result_ptr, tag_result_ptr); | |
1701 } /* end GetObjectsWithTags */ | |
1702 | |
1703 | |
1704 jvmtiError | |
1705 JvmtiEnv::ForceGarbageCollection() { | |
1706 Universe::heap()->collect(GCCause::_jvmti_force_gc); | |
1707 return JVMTI_ERROR_NONE; | |
1708 } /* end ForceGarbageCollection */ | |
1709 | |
1710 | |
1711 // | |
1712 // Heap (1.0) functions | |
1713 // | |
1714 | |
1715 // object_reference_callback - pre-checked for NULL | |
1716 // user_data - NULL is a valid value, must be checked | |
1717 jvmtiError | |
1718 JvmtiEnv::IterateOverObjectsReachableFromObject(jobject object, jvmtiObjectReferenceCallback object_reference_callback, const void* user_data) { | |
1719 oop o = JNIHandles::resolve_external_guard(object); | |
1720 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
1721 JvmtiTagMap::tag_map_for(this)->iterate_over_objects_reachable_from_object(object, object_reference_callback, user_data); | |
1722 return JVMTI_ERROR_NONE; | |
1723 } /* end IterateOverObjectsReachableFromObject */ | |
1724 | |
1725 | |
1726 // heap_root_callback - NULL is a valid value, must be checked | |
1727 // stack_ref_callback - NULL is a valid value, must be checked | |
1728 // object_ref_callback - NULL is a valid value, must be checked | |
1729 // user_data - NULL is a valid value, must be checked | |
1730 jvmtiError | |
1731 JvmtiEnv::IterateOverReachableObjects(jvmtiHeapRootCallback heap_root_callback, jvmtiStackReferenceCallback stack_ref_callback, jvmtiObjectReferenceCallback object_ref_callback, const void* user_data) { | |
1732 TraceTime t("IterateOverReachableObjects", TraceJVMTIObjectTagging); | |
1733 JvmtiTagMap::tag_map_for(this)->iterate_over_reachable_objects(heap_root_callback, stack_ref_callback, object_ref_callback, user_data); | |
1734 return JVMTI_ERROR_NONE; | |
1735 } /* end IterateOverReachableObjects */ | |
1736 | |
1737 | |
1738 // heap_object_callback - pre-checked for NULL | |
1739 // user_data - NULL is a valid value, must be checked | |
1740 jvmtiError | |
1741 JvmtiEnv::IterateOverHeap(jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) { | |
1742 TraceTime t("IterateOverHeap", TraceJVMTIObjectTagging); | |
1743 Thread *thread = Thread::current(); | |
1744 HandleMark hm(thread); | |
1745 JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, KlassHandle(), heap_object_callback, user_data); | |
1746 return JVMTI_ERROR_NONE; | |
1747 } /* end IterateOverHeap */ | |
1748 | |
1749 | |
1750 // k_mirror - may be primitive, this must be checked | |
1751 // heap_object_callback - pre-checked for NULL | |
1752 // user_data - NULL is a valid value, must be checked | |
1753 jvmtiError | |
1754 JvmtiEnv::IterateOverInstancesOfClass(oop k_mirror, jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) { | |
1755 if (java_lang_Class::is_primitive(k_mirror)) { | |
1756 // DO PRIMITIVE CLASS PROCESSING | |
1757 return JVMTI_ERROR_NONE; | |
1758 } | |
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1759 Klass* k_oop = java_lang_Class::as_Klass(k_mirror); |
0 | 1760 if (k_oop == NULL) { |
1761 return JVMTI_ERROR_INVALID_CLASS; | |
1762 } | |
1763 Thread *thread = Thread::current(); | |
1764 HandleMark hm(thread); | |
1765 KlassHandle klass (thread, k_oop); | |
1766 TraceTime t("IterateOverInstancesOfClass", TraceJVMTIObjectTagging); | |
1767 JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, klass, heap_object_callback, user_data); | |
1768 return JVMTI_ERROR_NONE; | |
1769 } /* end IterateOverInstancesOfClass */ | |
1770 | |
1771 | |
1772 // | |
1773 // Local Variable functions | |
1774 // | |
1775 | |
1776 // Threads_lock NOT held, java_thread not protected by lock | |
1777 // java_thread - pre-checked | |
1778 // java_thread - unchecked | |
1779 // depth - pre-checked as non-negative | |
1780 // value_ptr - pre-checked for NULL | |
1781 jvmtiError | |
1782 JvmtiEnv::GetLocalObject(JavaThread* java_thread, jint depth, jint slot, jobject* value_ptr) { | |
1783 JavaThread* current_thread = JavaThread::current(); | |
1784 // rm object is created to clean up the javaVFrame created in | |
1785 // doit_prologue(), but after doit() is finished with it. | |
1786 ResourceMark rm(current_thread); | |
1787 | |
1788 VM_GetOrSetLocal op(java_thread, current_thread, depth, slot); | |
1789 VMThread::execute(&op); | |
1790 jvmtiError err = op.result(); | |
1791 if (err != JVMTI_ERROR_NONE) { | |
1792 return err; | |
1793 } else { | |
1794 *value_ptr = op.value().l; | |
1795 return JVMTI_ERROR_NONE; | |
1796 } | |
1797 } /* end GetLocalObject */ | |
1798 | |
2019 | 1799 // Threads_lock NOT held, java_thread not protected by lock |
1800 // java_thread - pre-checked | |
1801 // java_thread - unchecked | |
1802 // depth - pre-checked as non-negative | |
1803 // value - pre-checked for NULL | |
1804 jvmtiError | |
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1805 JvmtiEnv::GetLocalInstance(JavaThread* java_thread, jint depth, jobject* value_ptr){ |
2019 | 1806 JavaThread* current_thread = JavaThread::current(); |
1807 // rm object is created to clean up the javaVFrame created in | |
1808 // doit_prologue(), but after doit() is finished with it. | |
1809 ResourceMark rm(current_thread); | |
1810 | |
1811 VM_GetReceiver op(java_thread, current_thread, depth); | |
1812 VMThread::execute(&op); | |
1813 jvmtiError err = op.result(); | |
1814 if (err != JVMTI_ERROR_NONE) { | |
1815 return err; | |
1816 } else { | |
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1817 *value_ptr = op.value().l; |
2019 | 1818 return JVMTI_ERROR_NONE; |
1819 } | |
1820 } /* end GetLocalInstance */ | |
1821 | |
0 | 1822 |
1823 // Threads_lock NOT held, java_thread not protected by lock | |
1824 // java_thread - pre-checked | |
1825 // java_thread - unchecked | |
1826 // depth - pre-checked as non-negative | |
1827 // value_ptr - pre-checked for NULL | |
1828 jvmtiError | |
1829 JvmtiEnv::GetLocalInt(JavaThread* java_thread, jint depth, jint slot, jint* value_ptr) { | |
1830 // rm object is created to clean up the javaVFrame created in | |
1831 // doit_prologue(), but after doit() is finished with it. | |
1832 ResourceMark rm; | |
1833 | |
1834 VM_GetOrSetLocal op(java_thread, depth, slot, T_INT); | |
1835 VMThread::execute(&op); | |
1836 *value_ptr = op.value().i; | |
1837 return op.result(); | |
1838 } /* end GetLocalInt */ | |
1839 | |
1840 | |
1841 // Threads_lock NOT held, java_thread not protected by lock | |
1842 // java_thread - pre-checked | |
1843 // java_thread - unchecked | |
1844 // depth - pre-checked as non-negative | |
1845 // value_ptr - pre-checked for NULL | |
1846 jvmtiError | |
1847 JvmtiEnv::GetLocalLong(JavaThread* java_thread, jint depth, jint slot, jlong* value_ptr) { | |
1848 // rm object is created to clean up the javaVFrame created in | |
1849 // doit_prologue(), but after doit() is finished with it. | |
1850 ResourceMark rm; | |
1851 | |
1852 VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG); | |
1853 VMThread::execute(&op); | |
1854 *value_ptr = op.value().j; | |
1855 return op.result(); | |
1856 } /* end GetLocalLong */ | |
1857 | |
1858 | |
1859 // Threads_lock NOT held, java_thread not protected by lock | |
1860 // java_thread - pre-checked | |
1861 // java_thread - unchecked | |
1862 // depth - pre-checked as non-negative | |
1863 // value_ptr - pre-checked for NULL | |
1864 jvmtiError | |
1865 JvmtiEnv::GetLocalFloat(JavaThread* java_thread, jint depth, jint slot, jfloat* value_ptr) { | |
1866 // rm object is created to clean up the javaVFrame created in | |
1867 // doit_prologue(), but after doit() is finished with it. | |
1868 ResourceMark rm; | |
1869 | |
1870 VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT); | |
1871 VMThread::execute(&op); | |
1872 *value_ptr = op.value().f; | |
1873 return op.result(); | |
1874 } /* end GetLocalFloat */ | |
1875 | |
1876 | |
1877 // Threads_lock NOT held, java_thread not protected by lock | |
1878 // java_thread - pre-checked | |
1879 // java_thread - unchecked | |
1880 // depth - pre-checked as non-negative | |
1881 // value_ptr - pre-checked for NULL | |
1882 jvmtiError | |
1883 JvmtiEnv::GetLocalDouble(JavaThread* java_thread, jint depth, jint slot, jdouble* value_ptr) { | |
1884 // rm object is created to clean up the javaVFrame created in | |
1885 // doit_prologue(), but after doit() is finished with it. | |
1886 ResourceMark rm; | |
1887 | |
1888 VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE); | |
1889 VMThread::execute(&op); | |
1890 *value_ptr = op.value().d; | |
1891 return op.result(); | |
1892 } /* end GetLocalDouble */ | |
1893 | |
1894 | |
1895 // Threads_lock NOT held, java_thread not protected by lock | |
1896 // java_thread - pre-checked | |
1897 // java_thread - unchecked | |
1898 // depth - pre-checked as non-negative | |
1899 jvmtiError | |
1900 JvmtiEnv::SetLocalObject(JavaThread* java_thread, jint depth, jint slot, jobject value) { | |
1901 // rm object is created to clean up the javaVFrame created in | |
1902 // doit_prologue(), but after doit() is finished with it. | |
1903 ResourceMark rm; | |
1904 jvalue val; | |
1905 val.l = value; | |
1906 VM_GetOrSetLocal op(java_thread, depth, slot, T_OBJECT, val); | |
1907 VMThread::execute(&op); | |
1908 return op.result(); | |
1909 } /* end SetLocalObject */ | |
1910 | |
1911 | |
1912 // Threads_lock NOT held, java_thread not protected by lock | |
1913 // java_thread - pre-checked | |
1914 // java_thread - unchecked | |
1915 // depth - pre-checked as non-negative | |
1916 jvmtiError | |
1917 JvmtiEnv::SetLocalInt(JavaThread* java_thread, jint depth, jint slot, jint value) { | |
1918 // rm object is created to clean up the javaVFrame created in | |
1919 // doit_prologue(), but after doit() is finished with it. | |
1920 ResourceMark rm; | |
1921 jvalue val; | |
1922 val.i = value; | |
1923 VM_GetOrSetLocal op(java_thread, depth, slot, T_INT, val); | |
1924 VMThread::execute(&op); | |
1925 return op.result(); | |
1926 } /* end SetLocalInt */ | |
1927 | |
1928 | |
1929 // Threads_lock NOT held, java_thread not protected by lock | |
1930 // java_thread - pre-checked | |
1931 // java_thread - unchecked | |
1932 // depth - pre-checked as non-negative | |
1933 jvmtiError | |
1934 JvmtiEnv::SetLocalLong(JavaThread* java_thread, jint depth, jint slot, jlong value) { | |
1935 // rm object is created to clean up the javaVFrame created in | |
1936 // doit_prologue(), but after doit() is finished with it. | |
1937 ResourceMark rm; | |
1938 jvalue val; | |
1939 val.j = value; | |
1940 VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG, val); | |
1941 VMThread::execute(&op); | |
1942 return op.result(); | |
1943 } /* end SetLocalLong */ | |
1944 | |
1945 | |
1946 // Threads_lock NOT held, java_thread not protected by lock | |
1947 // java_thread - pre-checked | |
1948 // java_thread - unchecked | |
1949 // depth - pre-checked as non-negative | |
1950 jvmtiError | |
1951 JvmtiEnv::SetLocalFloat(JavaThread* java_thread, jint depth, jint slot, jfloat value) { | |
1952 // rm object is created to clean up the javaVFrame created in | |
1953 // doit_prologue(), but after doit() is finished with it. | |
1954 ResourceMark rm; | |
1955 jvalue val; | |
1956 val.f = value; | |
1957 VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT, val); | |
1958 VMThread::execute(&op); | |
1959 return op.result(); | |
1960 } /* end SetLocalFloat */ | |
1961 | |
1962 | |
1963 // Threads_lock NOT held, java_thread not protected by lock | |
1964 // java_thread - pre-checked | |
1965 // java_thread - unchecked | |
1966 // depth - pre-checked as non-negative | |
1967 jvmtiError | |
1968 JvmtiEnv::SetLocalDouble(JavaThread* java_thread, jint depth, jint slot, jdouble value) { | |
1969 // rm object is created to clean up the javaVFrame created in | |
1970 // doit_prologue(), but after doit() is finished with it. | |
1971 ResourceMark rm; | |
1972 jvalue val; | |
1973 val.d = value; | |
1974 VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE, val); | |
1975 VMThread::execute(&op); | |
1976 return op.result(); | |
1977 } /* end SetLocalDouble */ | |
1978 | |
1979 | |
1980 // | |
1981 // Breakpoint functions | |
1982 // | |
1983 | |
1984 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
1985 jvmtiError | |
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1986 JvmtiEnv::SetBreakpoint(Method* method_oop, jlocation location) { |
0 | 1987 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
1988 if (location < 0) { // simple invalid location check first | |
1989 return JVMTI_ERROR_INVALID_LOCATION; | |
1990 } | |
1991 // verify that the breakpoint is not past the end of the method | |
1992 if (location >= (jlocation) method_oop->code_size()) { | |
1993 return JVMTI_ERROR_INVALID_LOCATION; | |
1994 } | |
1995 | |
1996 ResourceMark rm; | |
1997 JvmtiBreakpoint bp(method_oop, location); | |
1998 JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints(); | |
1999 if (jvmti_breakpoints.set(bp) == JVMTI_ERROR_DUPLICATE) | |
2000 return JVMTI_ERROR_DUPLICATE; | |
2001 | |
2002 if (TraceJVMTICalls) { | |
2003 jvmti_breakpoints.print(); | |
2004 } | |
2005 | |
2006 return JVMTI_ERROR_NONE; | |
2007 } /* end SetBreakpoint */ | |
2008 | |
2009 | |
2010 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2011 jvmtiError | |
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2012 JvmtiEnv::ClearBreakpoint(Method* method_oop, jlocation location) { |
0 | 2013 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
2014 | |
2015 if (location < 0) { // simple invalid location check first | |
2016 return JVMTI_ERROR_INVALID_LOCATION; | |
2017 } | |
2018 | |
2019 // verify that the breakpoint is not past the end of the method | |
2020 if (location >= (jlocation) method_oop->code_size()) { | |
2021 return JVMTI_ERROR_INVALID_LOCATION; | |
2022 } | |
2023 | |
2024 JvmtiBreakpoint bp(method_oop, location); | |
2025 | |
2026 JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints(); | |
2027 if (jvmti_breakpoints.clear(bp) == JVMTI_ERROR_NOT_FOUND) | |
2028 return JVMTI_ERROR_NOT_FOUND; | |
2029 | |
2030 if (TraceJVMTICalls) { | |
2031 jvmti_breakpoints.print(); | |
2032 } | |
2033 | |
2034 return JVMTI_ERROR_NONE; | |
2035 } /* end ClearBreakpoint */ | |
2036 | |
2037 | |
2038 // | |
2039 // Watched Field functions | |
2040 // | |
2041 | |
2042 jvmtiError | |
2043 JvmtiEnv::SetFieldAccessWatch(fieldDescriptor* fdesc_ptr) { | |
2044 // make sure we haven't set this watch before | |
2045 if (fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_DUPLICATE; | |
2046 fdesc_ptr->set_is_field_access_watched(true); | |
2047 | |
2048 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, true); | |
2049 | |
2050 return JVMTI_ERROR_NONE; | |
2051 } /* end SetFieldAccessWatch */ | |
2052 | |
2053 | |
2054 jvmtiError | |
2055 JvmtiEnv::ClearFieldAccessWatch(fieldDescriptor* fdesc_ptr) { | |
2056 // make sure we have a watch to clear | |
2057 if (!fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_NOT_FOUND; | |
2058 fdesc_ptr->set_is_field_access_watched(false); | |
2059 | |
2060 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, false); | |
2061 | |
2062 return JVMTI_ERROR_NONE; | |
2063 } /* end ClearFieldAccessWatch */ | |
2064 | |
2065 | |
2066 jvmtiError | |
2067 JvmtiEnv::SetFieldModificationWatch(fieldDescriptor* fdesc_ptr) { | |
2068 // make sure we haven't set this watch before | |
2069 if (fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_DUPLICATE; | |
2070 fdesc_ptr->set_is_field_modification_watched(true); | |
2071 | |
2072 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, true); | |
2073 | |
2074 return JVMTI_ERROR_NONE; | |
2075 } /* end SetFieldModificationWatch */ | |
2076 | |
2077 | |
2078 jvmtiError | |
2079 JvmtiEnv::ClearFieldModificationWatch(fieldDescriptor* fdesc_ptr) { | |
2080 // make sure we have a watch to clear | |
2081 if (!fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_NOT_FOUND; | |
2082 fdesc_ptr->set_is_field_modification_watched(false); | |
2083 | |
2084 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, false); | |
2085 | |
2086 return JVMTI_ERROR_NONE; | |
2087 } /* end ClearFieldModificationWatch */ | |
2088 | |
2089 // | |
2090 // Class functions | |
2091 // | |
2092 | |
2093 | |
2094 // k_mirror - may be primitive, this must be checked | |
2095 // signature_ptr - NULL is a valid value, must be checked | |
2096 // generic_ptr - NULL is a valid value, must be checked | |
2097 jvmtiError | |
2098 JvmtiEnv::GetClassSignature(oop k_mirror, char** signature_ptr, char** generic_ptr) { | |
2099 ResourceMark rm; | |
2100 bool isPrimitive = java_lang_Class::is_primitive(k_mirror); | |
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2101 Klass* k = NULL; |
0 | 2102 if (!isPrimitive) { |
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2103 k = java_lang_Class::as_Klass(k_mirror); |
0 | 2104 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
2105 } | |
2106 if (signature_ptr != NULL) { | |
2107 char* result = NULL; | |
2108 if (isPrimitive) { | |
2109 char tchar = type2char(java_lang_Class::primitive_type(k_mirror)); | |
2110 result = (char*) jvmtiMalloc(2); | |
2111 result[0] = tchar; | |
2112 result[1] = '\0'; | |
2113 } else { | |
6983 | 2114 const char* class_sig = k->signature_name(); |
0 | 2115 result = (char *) jvmtiMalloc(strlen(class_sig)+1); |
2116 strcpy(result, class_sig); | |
2117 } | |
2118 *signature_ptr = result; | |
2119 } | |
2120 if (generic_ptr != NULL) { | |
2121 *generic_ptr = NULL; | |
6983 | 2122 if (!isPrimitive && k->oop_is_instance()) { |
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2123 Symbol* soo = InstanceKlass::cast(k)->generic_signature(); |
0 | 2124 if (soo != NULL) { |
2125 const char *gen_sig = soo->as_C_string(); | |
2126 if (gen_sig != NULL) { | |
2127 char* gen_result; | |
2128 jvmtiError err = allocate(strlen(gen_sig) + 1, | |
2129 (unsigned char **)&gen_result); | |
2130 if (err != JVMTI_ERROR_NONE) { | |
2131 return err; | |
2132 } | |
2133 strcpy(gen_result, gen_sig); | |
2134 *generic_ptr = gen_result; | |
2135 } | |
2136 } | |
2137 } | |
2138 } | |
2139 return JVMTI_ERROR_NONE; | |
2140 } /* end GetClassSignature */ | |
2141 | |
2142 | |
2143 // k_mirror - may be primitive, this must be checked | |
2144 // status_ptr - pre-checked for NULL | |
2145 jvmtiError | |
2146 JvmtiEnv::GetClassStatus(oop k_mirror, jint* status_ptr) { | |
2147 jint result = 0; | |
2148 if (java_lang_Class::is_primitive(k_mirror)) { | |
2149 result |= JVMTI_CLASS_STATUS_PRIMITIVE; | |
2150 } else { | |
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2151 Klass* k = java_lang_Class::as_Klass(k_mirror); |
0 | 2152 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
6983 | 2153 result = k->jvmti_class_status(); |
0 | 2154 } |
2155 *status_ptr = result; | |
2156 | |
2157 return JVMTI_ERROR_NONE; | |
2158 } /* end GetClassStatus */ | |
2159 | |
2160 | |
2161 // k_mirror - may be primitive, this must be checked | |
2162 // source_name_ptr - pre-checked for NULL | |
2163 jvmtiError | |
2164 JvmtiEnv::GetSourceFileName(oop k_mirror, char** source_name_ptr) { | |
2165 if (java_lang_Class::is_primitive(k_mirror)) { | |
2166 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2167 } | |
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2168 Klass* k_klass = java_lang_Class::as_Klass(k_mirror); |
0 | 2169 NULL_CHECK(k_klass, JVMTI_ERROR_INVALID_CLASS); |
2170 | |
6983 | 2171 if (!k_klass->oop_is_instance()) { |
0 | 2172 return JVMTI_ERROR_ABSENT_INFORMATION; |
2173 } | |
2174 | |
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2175 Symbol* sfnOop = InstanceKlass::cast(k_klass)->source_file_name(); |
0 | 2176 NULL_CHECK(sfnOop, JVMTI_ERROR_ABSENT_INFORMATION); |
2177 { | |
2178 JavaThread* current_thread = JavaThread::current(); | |
2179 ResourceMark rm(current_thread); | |
2180 const char* sfncp = (const char*) sfnOop->as_C_string(); | |
2181 *source_name_ptr = (char *) jvmtiMalloc(strlen(sfncp)+1); | |
2182 strcpy(*source_name_ptr, sfncp); | |
2183 } | |
2184 | |
2185 return JVMTI_ERROR_NONE; | |
2186 } /* end GetSourceFileName */ | |
2187 | |
2188 | |
2189 // k_mirror - may be primitive, this must be checked | |
2190 // modifiers_ptr - pre-checked for NULL | |
2191 jvmtiError | |
2192 JvmtiEnv::GetClassModifiers(oop k_mirror, jint* modifiers_ptr) { | |
2193 JavaThread* current_thread = JavaThread::current(); | |
2194 jint result = 0; | |
2195 if (!java_lang_Class::is_primitive(k_mirror)) { | |
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2196 Klass* k = java_lang_Class::as_Klass(k_mirror); |
0 | 2197 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
6983 | 2198 result = k->compute_modifier_flags(current_thread); |
0 | 2199 JavaThread* THREAD = current_thread; // pass to macros |
2200 if (HAS_PENDING_EXCEPTION) { | |
2201 CLEAR_PENDING_EXCEPTION; | |
2202 return JVMTI_ERROR_INTERNAL; | |
2203 }; | |
2204 | |
2205 // Reset the deleted ACC_SUPER bit ( deleted in compute_modifier_flags()). | |
6983 | 2206 if(k->is_super()) { |
0 | 2207 result |= JVM_ACC_SUPER; |
2208 } | |
2209 } else { | |
2210 result = (JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC); | |
2211 } | |
2212 *modifiers_ptr = result; | |
2213 | |
2214 return JVMTI_ERROR_NONE; | |
2215 } /* end GetClassModifiers */ | |
2216 | |
2217 | |
2218 // k_mirror - may be primitive, this must be checked | |
2219 // method_count_ptr - pre-checked for NULL | |
2220 // methods_ptr - pre-checked for NULL | |
2221 jvmtiError | |
2222 JvmtiEnv::GetClassMethods(oop k_mirror, jint* method_count_ptr, jmethodID** methods_ptr) { | |
2223 JavaThread* current_thread = JavaThread::current(); | |
2224 HandleMark hm(current_thread); | |
2225 | |
2226 if (java_lang_Class::is_primitive(k_mirror)) { | |
2227 *method_count_ptr = 0; | |
2228 *methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID)); | |
2229 return JVMTI_ERROR_NONE; | |
2230 } | |
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2231 Klass* k = java_lang_Class::as_Klass(k_mirror); |
0 | 2232 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
2233 | |
2234 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
6983 | 2235 if (!(k->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) { |
0 | 2236 return JVMTI_ERROR_CLASS_NOT_PREPARED; |
2237 } | |
2238 | |
6983 | 2239 if (!k->oop_is_instance()) { |
0 | 2240 *method_count_ptr = 0; |
2241 *methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID)); | |
2242 return JVMTI_ERROR_NONE; | |
2243 } | |
2244 instanceKlassHandle instanceK_h(current_thread, k); | |
2245 // Allocate the result and fill it in | |
2246 int result_length = instanceK_h->methods()->length(); | |
2247 jmethodID* result_list = (jmethodID*)jvmtiMalloc(result_length * sizeof(jmethodID)); | |
2248 int index; | |
2249 if (JvmtiExport::can_maintain_original_method_order()) { | |
2250 // Use the original method ordering indices stored in the class, so we can emit | |
2251 // jmethodIDs in the order they appeared in the class file | |
2252 for (index = 0; index < result_length; index++) { | |
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2253 Method* m = instanceK_h->methods()->at(index); |
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2254 int original_index = instanceK_h->method_ordering()->at(index); |
0 | 2255 assert(original_index >= 0 && original_index < result_length, "invalid original method index"); |
2256 jmethodID id = m->jmethod_id(); | |
2257 result_list[original_index] = id; | |
2258 } | |
2259 } else { | |
2260 // otherwise just copy in any order | |
2261 for (index = 0; index < result_length; index++) { | |
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2262 Method* m = instanceK_h->methods()->at(index); |
0 | 2263 jmethodID id = m->jmethod_id(); |
2264 result_list[index] = id; | |
2265 } | |
2266 } | |
2267 // Fill in return value. | |
2268 *method_count_ptr = result_length; | |
2269 *methods_ptr = result_list; | |
2270 | |
2271 return JVMTI_ERROR_NONE; | |
2272 } /* end GetClassMethods */ | |
2273 | |
2274 | |
2275 // k_mirror - may be primitive, this must be checked | |
2276 // field_count_ptr - pre-checked for NULL | |
2277 // fields_ptr - pre-checked for NULL | |
2278 jvmtiError | |
2279 JvmtiEnv::GetClassFields(oop k_mirror, jint* field_count_ptr, jfieldID** fields_ptr) { | |
2280 if (java_lang_Class::is_primitive(k_mirror)) { | |
2281 *field_count_ptr = 0; | |
2282 *fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID)); | |
2283 return JVMTI_ERROR_NONE; | |
2284 } | |
2285 JavaThread* current_thread = JavaThread::current(); | |
2286 HandleMark hm(current_thread); | |
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2287 Klass* k = java_lang_Class::as_Klass(k_mirror); |
0 | 2288 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
2289 | |
2290 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
6983 | 2291 if (!(k->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) { |
0 | 2292 return JVMTI_ERROR_CLASS_NOT_PREPARED; |
2293 } | |
2294 | |
6983 | 2295 if (!k->oop_is_instance()) { |
0 | 2296 *field_count_ptr = 0; |
2297 *fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID)); | |
2298 return JVMTI_ERROR_NONE; | |
2299 } | |
2300 | |
2301 | |
2302 instanceKlassHandle instanceK_h(current_thread, k); | |
2303 | |
2304 int result_count = 0; | |
2305 // First, count the fields. | |
2306 FilteredFieldStream flds(instanceK_h, true, true); | |
2307 result_count = flds.field_count(); | |
2308 | |
2309 // Allocate the result and fill it in | |
2310 jfieldID* result_list = (jfieldID*) jvmtiMalloc(result_count * sizeof(jfieldID)); | |
2311 // The JVMTI spec requires fields in the order they occur in the class file, | |
2312 // this is the reverse order of what FieldStream hands out. | |
2313 int id_index = (result_count - 1); | |
2314 | |
2315 for (FilteredFieldStream src_st(instanceK_h, true, true); !src_st.eos(); src_st.next()) { | |
2316 result_list[id_index--] = jfieldIDWorkaround::to_jfieldID( | |
2317 instanceK_h, src_st.offset(), | |
2318 src_st.access_flags().is_static()); | |
2319 } | |
2320 assert(id_index == -1, "just checking"); | |
2321 // Fill in the results | |
2322 *field_count_ptr = result_count; | |
2323 *fields_ptr = result_list; | |
2324 | |
2325 return JVMTI_ERROR_NONE; | |
2326 } /* end GetClassFields */ | |
2327 | |
2328 | |
2329 // k_mirror - may be primitive, this must be checked | |
2330 // interface_count_ptr - pre-checked for NULL | |
2331 // interfaces_ptr - pre-checked for NULL | |
2332 jvmtiError | |
2333 JvmtiEnv::GetImplementedInterfaces(oop k_mirror, jint* interface_count_ptr, jclass** interfaces_ptr) { | |
2334 { | |
2335 if (java_lang_Class::is_primitive(k_mirror)) { | |
2336 *interface_count_ptr = 0; | |
2337 *interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass)); | |
2338 return JVMTI_ERROR_NONE; | |
2339 } | |
2340 JavaThread* current_thread = JavaThread::current(); | |
2341 HandleMark hm(current_thread); | |
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2342 Klass* k = java_lang_Class::as_Klass(k_mirror); |
0 | 2343 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
2344 | |
2345 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
6983 | 2346 if (!(k->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) |
0 | 2347 return JVMTI_ERROR_CLASS_NOT_PREPARED; |
2348 | |
6983 | 2349 if (!k->oop_is_instance()) { |
0 | 2350 *interface_count_ptr = 0; |
2351 *interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass)); | |
2352 return JVMTI_ERROR_NONE; | |
2353 } | |
2354 | |
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2355 Array<Klass*>* interface_list = InstanceKlass::cast(k)->local_interfaces(); |
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2356 const int result_length = (interface_list == NULL ? 0 : interface_list->length()); |
0 | 2357 jclass* result_list = (jclass*) jvmtiMalloc(result_length * sizeof(jclass)); |
2358 for (int i_index = 0; i_index < result_length; i_index += 1) { | |
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2359 Klass* klass_at = interface_list->at(i_index); |
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2360 assert(klass_at->is_klass(), "interfaces must be Klass*s"); |
6983 | 2361 assert(klass_at->is_interface(), "interfaces must be interfaces"); |
2362 oop mirror_at = klass_at->java_mirror(); | |
0 | 2363 Handle handle_at = Handle(current_thread, mirror_at); |
2364 result_list[i_index] = (jclass) jni_reference(handle_at); | |
2365 } | |
2366 *interface_count_ptr = result_length; | |
2367 *interfaces_ptr = result_list; | |
2368 } | |
2369 | |
2370 return JVMTI_ERROR_NONE; | |
2371 } /* end GetImplementedInterfaces */ | |
2372 | |
2373 | |
2374 // k_mirror - may be primitive, this must be checked | |
2375 // minor_version_ptr - pre-checked for NULL | |
2376 // major_version_ptr - pre-checked for NULL | |
2377 jvmtiError | |
2378 JvmtiEnv::GetClassVersionNumbers(oop k_mirror, jint* minor_version_ptr, jint* major_version_ptr) { | |
2379 if (java_lang_Class::is_primitive(k_mirror)) { | |
2380 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2381 } | |
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2382 Klass* k_oop = java_lang_Class::as_Klass(k_mirror); |
0 | 2383 Thread *thread = Thread::current(); |
2384 HandleMark hm(thread); | |
2385 KlassHandle klass(thread, k_oop); | |
2386 | |
2387 jint status = klass->jvmti_class_status(); | |
2388 if (status & (JVMTI_CLASS_STATUS_ERROR)) { | |
2389 return JVMTI_ERROR_INVALID_CLASS; | |
2390 } | |
2391 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { | |
2392 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2393 } | |
2394 | |
2395 instanceKlassHandle ik(thread, k_oop); | |
2396 *minor_version_ptr = ik->minor_version(); | |
2397 *major_version_ptr = ik->major_version(); | |
2398 | |
2399 return JVMTI_ERROR_NONE; | |
2400 } /* end GetClassVersionNumbers */ | |
2401 | |
2402 | |
2403 // k_mirror - may be primitive, this must be checked | |
2404 // constant_pool_count_ptr - pre-checked for NULL | |
2405 // constant_pool_byte_count_ptr - pre-checked for NULL | |
2406 // constant_pool_bytes_ptr - pre-checked for NULL | |
2407 jvmtiError | |
2408 JvmtiEnv::GetConstantPool(oop k_mirror, jint* constant_pool_count_ptr, jint* constant_pool_byte_count_ptr, unsigned char** constant_pool_bytes_ptr) { | |
2409 if (java_lang_Class::is_primitive(k_mirror)) { | |
2410 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2411 } | |
2412 | |
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2413 Klass* k_oop = java_lang_Class::as_Klass(k_mirror); |
0 | 2414 Thread *thread = Thread::current(); |
2415 HandleMark hm(thread); | |
2416 ResourceMark rm(thread); | |
2417 KlassHandle klass(thread, k_oop); | |
2418 | |
2419 jint status = klass->jvmti_class_status(); | |
2420 if (status & (JVMTI_CLASS_STATUS_ERROR)) { | |
2421 return JVMTI_ERROR_INVALID_CLASS; | |
2422 } | |
2423 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { | |
2424 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2425 } | |
2426 | |
2427 instanceKlassHandle ikh(thread, k_oop); | |
2428 constantPoolHandle constants(thread, ikh->constants()); | |
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2429 MonitorLockerEx ml(constants->lock()); // lock constant pool while we query it |
0 | 2430 |
2431 JvmtiConstantPoolReconstituter reconstituter(ikh); | |
2432 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
2433 return reconstituter.get_error(); | |
2434 } | |
2435 | |
2436 unsigned char *cpool_bytes; | |
2437 int cpool_size = reconstituter.cpool_size(); | |
2438 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
2439 return reconstituter.get_error(); | |
2440 } | |
2441 jvmtiError res = allocate(cpool_size, &cpool_bytes); | |
2442 if (res != JVMTI_ERROR_NONE) { | |
2443 return res; | |
2444 } | |
2445 reconstituter.copy_cpool_bytes(cpool_bytes); | |
2446 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
2447 return reconstituter.get_error(); | |
2448 } | |
2449 | |
2450 *constant_pool_count_ptr = constants->length(); | |
2451 *constant_pool_byte_count_ptr = cpool_size; | |
2452 *constant_pool_bytes_ptr = cpool_bytes; | |
2453 | |
2454 return JVMTI_ERROR_NONE; | |
2455 } /* end GetConstantPool */ | |
2456 | |
2457 | |
2458 // k_mirror - may be primitive, this must be checked | |
2459 // is_interface_ptr - pre-checked for NULL | |
2460 jvmtiError | |
2461 JvmtiEnv::IsInterface(oop k_mirror, jboolean* is_interface_ptr) { | |
2462 { | |
2463 bool result = false; | |
2464 if (!java_lang_Class::is_primitive(k_mirror)) { | |
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2465 Klass* k = java_lang_Class::as_Klass(k_mirror); |
6983 | 2466 if (k != NULL && k->is_interface()) { |
0 | 2467 result = true; |
2468 } | |
2469 } | |
2470 *is_interface_ptr = result; | |
2471 } | |
2472 | |
2473 return JVMTI_ERROR_NONE; | |
2474 } /* end IsInterface */ | |
2475 | |
2476 | |
2477 // k_mirror - may be primitive, this must be checked | |
2478 // is_array_class_ptr - pre-checked for NULL | |
2479 jvmtiError | |
2480 JvmtiEnv::IsArrayClass(oop k_mirror, jboolean* is_array_class_ptr) { | |
2481 { | |
2482 bool result = false; | |
2483 if (!java_lang_Class::is_primitive(k_mirror)) { | |
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2484 Klass* k = java_lang_Class::as_Klass(k_mirror); |
6983 | 2485 if (k != NULL && k->oop_is_array()) { |
0 | 2486 result = true; |
2487 } | |
2488 } | |
2489 *is_array_class_ptr = result; | |
2490 } | |
2491 | |
2492 return JVMTI_ERROR_NONE; | |
2493 } /* end IsArrayClass */ | |
2494 | |
2495 | |
2496 // k_mirror - may be primitive, this must be checked | |
2497 // classloader_ptr - pre-checked for NULL | |
2498 jvmtiError | |
2499 JvmtiEnv::GetClassLoader(oop k_mirror, jobject* classloader_ptr) { | |
2500 { | |
2501 if (java_lang_Class::is_primitive(k_mirror)) { | |
2502 *classloader_ptr = (jclass) jni_reference(Handle()); | |
2503 return JVMTI_ERROR_NONE; | |
2504 } | |
2505 JavaThread* current_thread = JavaThread::current(); | |
2506 HandleMark hm(current_thread); | |
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2507 Klass* k = java_lang_Class::as_Klass(k_mirror); |
0 | 2508 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
2509 | |
6983 | 2510 oop result_oop = k->class_loader(); |
0 | 2511 if (result_oop == NULL) { |
2512 *classloader_ptr = (jclass) jni_reference(Handle()); | |
2513 return JVMTI_ERROR_NONE; | |
2514 } | |
2515 Handle result_handle = Handle(current_thread, result_oop); | |
2516 jclass result_jnihandle = (jclass) jni_reference(result_handle); | |
2517 *classloader_ptr = result_jnihandle; | |
2518 } | |
2519 return JVMTI_ERROR_NONE; | |
2520 } /* end GetClassLoader */ | |
2521 | |
2522 | |
2523 // k_mirror - may be primitive, this must be checked | |
2524 // source_debug_extension_ptr - pre-checked for NULL | |
2525 jvmtiError | |
2526 JvmtiEnv::GetSourceDebugExtension(oop k_mirror, char** source_debug_extension_ptr) { | |
2527 { | |
2528 if (java_lang_Class::is_primitive(k_mirror)) { | |
2529 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2530 } | |
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2531 Klass* k = java_lang_Class::as_Klass(k_mirror); |
0 | 2532 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
6983 | 2533 if (!k->oop_is_instance()) { |
0 | 2534 return JVMTI_ERROR_ABSENT_INFORMATION; |
2535 } | |
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2536 char* sde = InstanceKlass::cast(k)->source_debug_extension(); |
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2537 NULL_CHECK(sde, JVMTI_ERROR_ABSENT_INFORMATION); |
0 | 2538 |
2539 { | |
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2540 *source_debug_extension_ptr = (char *) jvmtiMalloc(strlen(sde)+1); |
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2541 strcpy(*source_debug_extension_ptr, sde); |
0 | 2542 } |
2543 } | |
2544 | |
2545 return JVMTI_ERROR_NONE; | |
2546 } /* end GetSourceDebugExtension */ | |
2547 | |
2548 // | |
2549 // Object functions | |
2550 // | |
2551 | |
2552 // hash_code_ptr - pre-checked for NULL | |
2553 jvmtiError | |
2554 JvmtiEnv::GetObjectHashCode(jobject object, jint* hash_code_ptr) { | |
2555 oop mirror = JNIHandles::resolve_external_guard(object); | |
2556 NULL_CHECK(mirror, JVMTI_ERROR_INVALID_OBJECT); | |
2557 NULL_CHECK(hash_code_ptr, JVMTI_ERROR_NULL_POINTER); | |
2558 | |
2559 { | |
2560 jint result = (jint) mirror->identity_hash(); | |
2561 *hash_code_ptr = result; | |
2562 } | |
2563 return JVMTI_ERROR_NONE; | |
2564 } /* end GetObjectHashCode */ | |
2565 | |
2566 | |
2567 // info_ptr - pre-checked for NULL | |
2568 jvmtiError | |
2569 JvmtiEnv::GetObjectMonitorUsage(jobject object, jvmtiMonitorUsage* info_ptr) { | |
2570 JavaThread* calling_thread = JavaThread::current(); | |
2571 jvmtiError err = get_object_monitor_usage(calling_thread, object, info_ptr); | |
2572 if (err == JVMTI_ERROR_THREAD_NOT_SUSPENDED) { | |
2573 // Some of the critical threads were not suspended. go to a safepoint and try again | |
2574 VM_GetObjectMonitorUsage op(this, calling_thread, object, info_ptr); | |
2575 VMThread::execute(&op); | |
2576 err = op.result(); | |
2577 } | |
2578 return err; | |
2579 } /* end GetObjectMonitorUsage */ | |
2580 | |
2581 | |
2582 // | |
2583 // Field functions | |
2584 // | |
2585 | |
2586 // name_ptr - NULL is a valid value, must be checked | |
2587 // signature_ptr - NULL is a valid value, must be checked | |
2588 // generic_ptr - NULL is a valid value, must be checked | |
2589 jvmtiError | |
2590 JvmtiEnv::GetFieldName(fieldDescriptor* fdesc_ptr, char** name_ptr, char** signature_ptr, char** generic_ptr) { | |
2591 JavaThread* current_thread = JavaThread::current(); | |
2592 ResourceMark rm(current_thread); | |
2593 if (name_ptr == NULL) { | |
2594 // just don't return the name | |
2595 } else { | |
2596 const char* fieldName = fdesc_ptr->name()->as_C_string(); | |
2597 *name_ptr = (char*) jvmtiMalloc(strlen(fieldName) + 1); | |
2598 if (*name_ptr == NULL) | |
2599 return JVMTI_ERROR_OUT_OF_MEMORY; | |
2600 strcpy(*name_ptr, fieldName); | |
2601 } | |
2602 if (signature_ptr== NULL) { | |
2603 // just don't return the signature | |
2604 } else { | |
2605 const char* fieldSignature = fdesc_ptr->signature()->as_C_string(); | |
2606 *signature_ptr = (char*) jvmtiMalloc(strlen(fieldSignature) + 1); | |
2607 if (*signature_ptr == NULL) | |
2608 return JVMTI_ERROR_OUT_OF_MEMORY; | |
2609 strcpy(*signature_ptr, fieldSignature); | |
2610 } | |
2611 if (generic_ptr != NULL) { | |
2612 *generic_ptr = NULL; | |
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2613 Symbol* soop = fdesc_ptr->generic_signature(); |
0 | 2614 if (soop != NULL) { |
2615 const char* gen_sig = soop->as_C_string(); | |
2616 if (gen_sig != NULL) { | |
2617 jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr); | |
2618 if (err != JVMTI_ERROR_NONE) { | |
2619 return err; | |
2620 } | |
2621 strcpy(*generic_ptr, gen_sig); | |
2622 } | |
2623 } | |
2624 } | |
2625 return JVMTI_ERROR_NONE; | |
2626 } /* end GetFieldName */ | |
2627 | |
2628 | |
2629 // declaring_class_ptr - pre-checked for NULL | |
2630 jvmtiError | |
2631 JvmtiEnv::GetFieldDeclaringClass(fieldDescriptor* fdesc_ptr, jclass* declaring_class_ptr) { | |
2632 | |
2633 *declaring_class_ptr = get_jni_class_non_null(fdesc_ptr->field_holder()); | |
2634 return JVMTI_ERROR_NONE; | |
2635 } /* end GetFieldDeclaringClass */ | |
2636 | |
2637 | |
2638 // modifiers_ptr - pre-checked for NULL | |
2639 jvmtiError | |
2640 JvmtiEnv::GetFieldModifiers(fieldDescriptor* fdesc_ptr, jint* modifiers_ptr) { | |
2641 | |
2642 AccessFlags resultFlags = fdesc_ptr->access_flags(); | |
2643 jint result = resultFlags.as_int(); | |
2644 *modifiers_ptr = result; | |
2645 | |
2646 return JVMTI_ERROR_NONE; | |
2647 } /* end GetFieldModifiers */ | |
2648 | |
2649 | |
2650 // is_synthetic_ptr - pre-checked for NULL | |
2651 jvmtiError | |
2652 JvmtiEnv::IsFieldSynthetic(fieldDescriptor* fdesc_ptr, jboolean* is_synthetic_ptr) { | |
2653 *is_synthetic_ptr = fdesc_ptr->is_synthetic(); | |
2654 return JVMTI_ERROR_NONE; | |
2655 } /* end IsFieldSynthetic */ | |
2656 | |
2657 | |
2658 // | |
2659 // Method functions | |
2660 // | |
2661 | |
2662 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2663 // name_ptr - NULL is a valid value, must be checked | |
2664 // signature_ptr - NULL is a valid value, must be checked | |
2665 // generic_ptr - NULL is a valid value, must be checked | |
2666 jvmtiError | |
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2667 JvmtiEnv::GetMethodName(Method* method_oop, char** name_ptr, char** signature_ptr, char** generic_ptr) { |
0 | 2668 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
2669 JavaThread* current_thread = JavaThread::current(); | |
2670 | |
2671 ResourceMark rm(current_thread); // get the utf8 name and signature | |
2672 if (name_ptr == NULL) { | |
2673 // just don't return the name | |
2674 } else { | |
2675 const char* utf8_name = (const char *) method_oop->name()->as_utf8(); | |
2676 *name_ptr = (char *) jvmtiMalloc(strlen(utf8_name)+1); | |
2677 strcpy(*name_ptr, utf8_name); | |
2678 } | |
2679 if (signature_ptr == NULL) { | |
2680 // just don't return the signature | |
2681 } else { | |
2682 const char* utf8_signature = (const char *) method_oop->signature()->as_utf8(); | |
2683 *signature_ptr = (char *) jvmtiMalloc(strlen(utf8_signature) + 1); | |
2684 strcpy(*signature_ptr, utf8_signature); | |
2685 } | |
2686 | |
2687 if (generic_ptr != NULL) { | |
2688 *generic_ptr = NULL; | |
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2689 Symbol* soop = method_oop->generic_signature(); |
0 | 2690 if (soop != NULL) { |
2691 const char* gen_sig = soop->as_C_string(); | |
2692 if (gen_sig != NULL) { | |
2693 jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr); | |
2694 if (err != JVMTI_ERROR_NONE) { | |
2695 return err; | |
2696 } | |
2697 strcpy(*generic_ptr, gen_sig); | |
2698 } | |
2699 } | |
2700 } | |
2701 return JVMTI_ERROR_NONE; | |
2702 } /* end GetMethodName */ | |
2703 | |
2704 | |
2705 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2706 // declaring_class_ptr - pre-checked for NULL | |
2707 jvmtiError | |
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2708 JvmtiEnv::GetMethodDeclaringClass(Method* method_oop, jclass* declaring_class_ptr) { |
0 | 2709 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
2710 (*declaring_class_ptr) = get_jni_class_non_null(method_oop->method_holder()); | |
2711 return JVMTI_ERROR_NONE; | |
2712 } /* end GetMethodDeclaringClass */ | |
2713 | |
2714 | |
2715 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2716 // modifiers_ptr - pre-checked for NULL | |
2717 jvmtiError | |
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2718 JvmtiEnv::GetMethodModifiers(Method* method_oop, jint* modifiers_ptr) { |
0 | 2719 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
2720 (*modifiers_ptr) = method_oop->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
2721 return JVMTI_ERROR_NONE; | |
2722 } /* end GetMethodModifiers */ | |
2723 | |
2724 | |
2725 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2726 // max_ptr - pre-checked for NULL | |
2727 jvmtiError | |
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2728 JvmtiEnv::GetMaxLocals(Method* method_oop, jint* max_ptr) { |
0 | 2729 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
2730 // get max stack | |
2731 (*max_ptr) = method_oop->max_locals(); | |
2732 return JVMTI_ERROR_NONE; | |
2733 } /* end GetMaxLocals */ | |
2734 | |
2735 | |
2736 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2737 // size_ptr - pre-checked for NULL | |
2738 jvmtiError | |
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2739 JvmtiEnv::GetArgumentsSize(Method* method_oop, jint* size_ptr) { |
0 | 2740 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
2741 // get size of arguments | |
2742 | |
2743 (*size_ptr) = method_oop->size_of_parameters(); | |
2744 return JVMTI_ERROR_NONE; | |
2745 } /* end GetArgumentsSize */ | |
2746 | |
2747 | |
2748 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2749 // entry_count_ptr - pre-checked for NULL | |
2750 // table_ptr - pre-checked for NULL | |
2751 jvmtiError | |
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2752 JvmtiEnv::GetLineNumberTable(Method* method_oop, jint* entry_count_ptr, jvmtiLineNumberEntry** table_ptr) { |
0 | 2753 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
2754 if (!method_oop->has_linenumber_table()) { | |
2755 return (JVMTI_ERROR_ABSENT_INFORMATION); | |
2756 } | |
2757 | |
2758 // The line number table is compressed so we don't know how big it is until decompressed. | |
2759 // Decompression is really fast so we just do it twice. | |
2760 | |
2761 // Compute size of table | |
2762 jint num_entries = 0; | |
2763 CompressedLineNumberReadStream stream(method_oop->compressed_linenumber_table()); | |
2764 while (stream.read_pair()) { | |
2765 num_entries++; | |
2766 } | |
2767 jvmtiLineNumberEntry *jvmti_table = | |
2768 (jvmtiLineNumberEntry *)jvmtiMalloc(num_entries * (sizeof(jvmtiLineNumberEntry))); | |
2769 | |
2770 // Fill jvmti table | |
2771 if (num_entries > 0) { | |
2772 int index = 0; | |
2773 CompressedLineNumberReadStream stream(method_oop->compressed_linenumber_table()); | |
2774 while (stream.read_pair()) { | |
2775 jvmti_table[index].start_location = (jlocation) stream.bci(); | |
2776 jvmti_table[index].line_number = (jint) stream.line(); | |
2777 index++; | |
2778 } | |
2779 assert(index == num_entries, "sanity check"); | |
2780 } | |
2781 | |
2782 // Set up results | |
2783 (*entry_count_ptr) = num_entries; | |
2784 (*table_ptr) = jvmti_table; | |
2785 | |
2786 return JVMTI_ERROR_NONE; | |
2787 } /* end GetLineNumberTable */ | |
2788 | |
2789 | |
2790 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2791 // start_location_ptr - pre-checked for NULL | |
2792 // end_location_ptr - pre-checked for NULL | |
2793 jvmtiError | |
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2794 JvmtiEnv::GetMethodLocation(Method* method_oop, jlocation* start_location_ptr, jlocation* end_location_ptr) { |
0 | 2795 |
2796 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2797 // get start and end location | |
2798 (*end_location_ptr) = (jlocation) (method_oop->code_size() - 1); | |
2799 if (method_oop->code_size() == 0) { | |
2800 // there is no code so there is no start location | |
2801 (*start_location_ptr) = (jlocation)(-1); | |
2802 } else { | |
2803 (*start_location_ptr) = (jlocation)(0); | |
2804 } | |
2805 | |
2806 return JVMTI_ERROR_NONE; | |
2807 } /* end GetMethodLocation */ | |
2808 | |
2809 | |
2810 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2811 // entry_count_ptr - pre-checked for NULL | |
2812 // table_ptr - pre-checked for NULL | |
2813 jvmtiError | |
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2814 JvmtiEnv::GetLocalVariableTable(Method* method_oop, jint* entry_count_ptr, jvmtiLocalVariableEntry** table_ptr) { |
0 | 2815 |
2816 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2817 JavaThread* current_thread = JavaThread::current(); | |
2818 | |
2819 // does the klass have any local variable information? | |
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2820 InstanceKlass* ik = method_oop->method_holder(); |
0 | 2821 if (!ik->access_flags().has_localvariable_table()) { |
2822 return (JVMTI_ERROR_ABSENT_INFORMATION); | |
2823 } | |
2824 | |
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2825 ConstantPool* constants = method_oop->constants(); |
0 | 2826 NULL_CHECK(constants, JVMTI_ERROR_ABSENT_INFORMATION); |
2827 | |
2828 // in the vm localvariable table representation, 6 consecutive elements in the table | |
2829 // represent a 6-tuple of shorts | |
2830 // [start_pc, length, name_index, descriptor_index, signature_index, index] | |
2831 jint num_entries = method_oop->localvariable_table_length(); | |
2832 jvmtiLocalVariableEntry *jvmti_table = (jvmtiLocalVariableEntry *) | |
2833 jvmtiMalloc(num_entries * (sizeof(jvmtiLocalVariableEntry))); | |
2834 | |
2835 if (num_entries > 0) { | |
2836 LocalVariableTableElement* table = method_oop->localvariable_table_start(); | |
2837 for (int i = 0; i < num_entries; i++) { | |
2838 // get the 5 tuple information from the vm table | |
2839 jlocation start_location = (jlocation) table[i].start_bci; | |
2840 jint length = (jint) table[i].length; | |
2841 int name_index = (int) table[i].name_cp_index; | |
2842 int signature_index = (int) table[i].descriptor_cp_index; | |
2843 int generic_signature_index = (int) table[i].signature_cp_index; | |
2844 jint slot = (jint) table[i].slot; | |
2845 | |
2846 // get utf8 name and signature | |
2847 char *name_buf = NULL; | |
2848 char *sig_buf = NULL; | |
2849 char *gen_sig_buf = NULL; | |
2850 { | |
2851 ResourceMark rm(current_thread); | |
2852 | |
2853 const char *utf8_name = (const char *) constants->symbol_at(name_index)->as_utf8(); | |
2854 name_buf = (char *) jvmtiMalloc(strlen(utf8_name)+1); | |
2855 strcpy(name_buf, utf8_name); | |
2856 | |
2857 const char *utf8_signature = (const char *) constants->symbol_at(signature_index)->as_utf8(); | |
2858 sig_buf = (char *) jvmtiMalloc(strlen(utf8_signature)+1); | |
2859 strcpy(sig_buf, utf8_signature); | |
2860 | |
2861 if (generic_signature_index > 0) { | |
2862 const char *utf8_gen_sign = (const char *) | |
2863 constants->symbol_at(generic_signature_index)->as_utf8(); | |
2864 gen_sig_buf = (char *) jvmtiMalloc(strlen(utf8_gen_sign)+1); | |
2865 strcpy(gen_sig_buf, utf8_gen_sign); | |
2866 } | |
2867 } | |
2868 | |
2869 // fill in the jvmti local variable table | |
2870 jvmti_table[i].start_location = start_location; | |
2871 jvmti_table[i].length = length; | |
2872 jvmti_table[i].name = name_buf; | |
2873 jvmti_table[i].signature = sig_buf; | |
2874 jvmti_table[i].generic_signature = gen_sig_buf; | |
2875 jvmti_table[i].slot = slot; | |
2876 } | |
2877 } | |
2878 | |
2879 // set results | |
2880 (*entry_count_ptr) = num_entries; | |
2881 (*table_ptr) = jvmti_table; | |
2882 | |
2883 return JVMTI_ERROR_NONE; | |
2884 } /* end GetLocalVariableTable */ | |
2885 | |
2886 | |
2887 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2888 // bytecode_count_ptr - pre-checked for NULL | |
2889 // bytecodes_ptr - pre-checked for NULL | |
2890 jvmtiError | |
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2891 JvmtiEnv::GetBytecodes(Method* method_oop, jint* bytecode_count_ptr, unsigned char** bytecodes_ptr) { |
0 | 2892 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
2893 | |
2894 HandleMark hm; | |
2895 methodHandle method(method_oop); | |
2896 jint size = (jint)method->code_size(); | |
2897 jvmtiError err = allocate(size, bytecodes_ptr); | |
2898 if (err != JVMTI_ERROR_NONE) { | |
2899 return err; | |
2900 } | |
2901 | |
2902 (*bytecode_count_ptr) = size; | |
2903 // get byte codes | |
2904 JvmtiClassFileReconstituter::copy_bytecodes(method, *bytecodes_ptr); | |
2905 | |
2906 return JVMTI_ERROR_NONE; | |
2907 } /* end GetBytecodes */ | |
2908 | |
2909 | |
2910 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2911 // is_native_ptr - pre-checked for NULL | |
2912 jvmtiError | |
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2913 JvmtiEnv::IsMethodNative(Method* method_oop, jboolean* is_native_ptr) { |
0 | 2914 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
2915 (*is_native_ptr) = method_oop->is_native(); | |
2916 return JVMTI_ERROR_NONE; | |
2917 } /* end IsMethodNative */ | |
2918 | |
2919 | |
2920 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2921 // is_synthetic_ptr - pre-checked for NULL | |
2922 jvmtiError | |
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2923 JvmtiEnv::IsMethodSynthetic(Method* method_oop, jboolean* is_synthetic_ptr) { |
0 | 2924 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
2925 (*is_synthetic_ptr) = method_oop->is_synthetic(); | |
2926 return JVMTI_ERROR_NONE; | |
2927 } /* end IsMethodSynthetic */ | |
2928 | |
2929 | |
2930 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2931 // is_obsolete_ptr - pre-checked for NULL | |
2932 jvmtiError | |
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2933 JvmtiEnv::IsMethodObsolete(Method* method_oop, jboolean* is_obsolete_ptr) { |
1121 | 2934 if (use_version_1_0_semantics() && |
2935 get_capabilities()->can_redefine_classes == 0) { | |
2936 // This JvmtiEnv requested version 1.0 semantics and this function | |
2937 // requires the can_redefine_classes capability in version 1.0 so | |
2938 // we need to return an error here. | |
2939 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; | |
2940 } | |
2941 | |
0 | 2942 if (method_oop == NULL || method_oop->is_obsolete()) { |
2943 *is_obsolete_ptr = true; | |
2944 } else { | |
2945 *is_obsolete_ptr = false; | |
2946 } | |
2947 return JVMTI_ERROR_NONE; | |
2948 } /* end IsMethodObsolete */ | |
2949 | |
2950 // | |
2951 // Raw Monitor functions | |
2952 // | |
2953 | |
2954 // name - pre-checked for NULL | |
2955 // monitor_ptr - pre-checked for NULL | |
2956 jvmtiError | |
2957 JvmtiEnv::CreateRawMonitor(const char* name, jrawMonitorID* monitor_ptr) { | |
2958 JvmtiRawMonitor* rmonitor = new JvmtiRawMonitor(name); | |
2959 NULL_CHECK(rmonitor, JVMTI_ERROR_OUT_OF_MEMORY); | |
2960 | |
2961 *monitor_ptr = (jrawMonitorID)rmonitor; | |
2962 | |
2963 return JVMTI_ERROR_NONE; | |
2964 } /* end CreateRawMonitor */ | |
2965 | |
2966 | |
2967 // rmonitor - pre-checked for validity | |
2968 jvmtiError | |
2969 JvmtiEnv::DestroyRawMonitor(JvmtiRawMonitor * rmonitor) { | |
2970 if (Threads::number_of_threads() == 0) { | |
2971 // Remove this monitor from pending raw monitors list | |
2972 // if it has entered in onload or start phase. | |
2973 JvmtiPendingMonitors::destroy(rmonitor); | |
2974 } else { | |
2975 Thread* thread = Thread::current(); | |
2976 if (rmonitor->is_entered(thread)) { | |
2977 // The caller owns this monitor which we are about to destroy. | |
2978 // We exit the underlying synchronization object so that the | |
2979 // "delete monitor" call below can work without an assertion | |
2980 // failure on systems that don't like destroying synchronization | |
2981 // objects that are locked. | |
2982 int r; | |
2983 intptr_t recursion = rmonitor->recursions(); | |
2984 for (intptr_t i=0; i <= recursion; i++) { | |
2985 r = rmonitor->raw_exit(thread); | |
2986 assert(r == ObjectMonitor::OM_OK, "raw_exit should have worked"); | |
2987 if (r != ObjectMonitor::OM_OK) { // robustness | |
2988 return JVMTI_ERROR_INTERNAL; | |
2989 } | |
2990 } | |
2991 } | |
2992 if (rmonitor->owner() != NULL) { | |
2993 // The caller is trying to destroy a monitor that is locked by | |
2994 // someone else. While this is not forbidden by the JVMTI | |
2995 // spec, it will cause an assertion failure on systems that don't | |
2996 // like destroying synchronization objects that are locked. | |
2997 // We indicate a problem with the error return (and leak the | |
2998 // monitor's memory). | |
2999 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3000 } | |
3001 } | |
3002 | |
3003 delete rmonitor; | |
3004 | |
3005 return JVMTI_ERROR_NONE; | |
3006 } /* end DestroyRawMonitor */ | |
3007 | |
3008 | |
3009 // rmonitor - pre-checked for validity | |
3010 jvmtiError | |
3011 JvmtiEnv::RawMonitorEnter(JvmtiRawMonitor * rmonitor) { | |
3012 if (Threads::number_of_threads() == 0) { | |
3013 // No JavaThreads exist so ObjectMonitor enter cannot be | |
3014 // used, add this raw monitor to the pending list. | |
3015 // The pending monitors will be actually entered when | |
3016 // the VM is setup. | |
3017 // See transition_pending_raw_monitors in create_vm() | |
3018 // in thread.cpp. | |
3019 JvmtiPendingMonitors::enter(rmonitor); | |
3020 } else { | |
3021 int r; | |
3022 Thread* thread = Thread::current(); | |
3023 | |
3024 if (thread->is_Java_thread()) { | |
3025 JavaThread* current_thread = (JavaThread*)thread; | |
3026 | |
3027 #ifdef PROPER_TRANSITIONS | |
3028 // Not really unknown but ThreadInVMfromNative does more than we want | |
3029 ThreadInVMfromUnknown __tiv; | |
3030 { | |
3031 ThreadBlockInVM __tbivm(current_thread); | |
3032 r = rmonitor->raw_enter(current_thread); | |
3033 } | |
3034 #else | |
3035 /* Transition to thread_blocked without entering vm state */ | |
3036 /* This is really evil. Normally you can't undo _thread_blocked */ | |
3037 /* transitions like this because it would cause us to miss a */ | |
3038 /* safepoint but since the thread was already in _thread_in_native */ | |
3039 /* the thread is not leaving a safepoint safe state and it will */ | |
3040 /* block when it tries to return from native. We can't safepoint */ | |
3041 /* block in here because we could deadlock the vmthread. Blech. */ | |
3042 | |
3043 JavaThreadState state = current_thread->thread_state(); | |
3044 assert(state == _thread_in_native, "Must be _thread_in_native"); | |
3045 // frame should already be walkable since we are in native | |
3046 assert(!current_thread->has_last_Java_frame() || | |
3047 current_thread->frame_anchor()->walkable(), "Must be walkable"); | |
3048 current_thread->set_thread_state(_thread_blocked); | |
3049 | |
3050 r = rmonitor->raw_enter(current_thread); | |
3051 // restore state, still at a safepoint safe state | |
3052 current_thread->set_thread_state(state); | |
3053 | |
3054 #endif /* PROPER_TRANSITIONS */ | |
3055 assert(r == ObjectMonitor::OM_OK, "raw_enter should have worked"); | |
3056 } else { | |
3057 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
3058 r = rmonitor->raw_enter(thread); | |
3059 } else { | |
3060 ShouldNotReachHere(); | |
3061 } | |
3062 } | |
3063 | |
3064 if (r != ObjectMonitor::OM_OK) { // robustness | |
3065 return JVMTI_ERROR_INTERNAL; | |
3066 } | |
3067 } | |
3068 return JVMTI_ERROR_NONE; | |
3069 } /* end RawMonitorEnter */ | |
3070 | |
3071 | |
3072 // rmonitor - pre-checked for validity | |
3073 jvmtiError | |
3074 JvmtiEnv::RawMonitorExit(JvmtiRawMonitor * rmonitor) { | |
3075 jvmtiError err = JVMTI_ERROR_NONE; | |
3076 | |
3077 if (Threads::number_of_threads() == 0) { | |
3078 // No JavaThreads exist so just remove this monitor from the pending list. | |
3079 // Bool value from exit is false if rmonitor is not in the list. | |
3080 if (!JvmtiPendingMonitors::exit(rmonitor)) { | |
3081 err = JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3082 } | |
3083 } else { | |
3084 int r; | |
3085 Thread* thread = Thread::current(); | |
3086 | |
3087 if (thread->is_Java_thread()) { | |
3088 JavaThread* current_thread = (JavaThread*)thread; | |
3089 #ifdef PROPER_TRANSITIONS | |
3090 // Not really unknown but ThreadInVMfromNative does more than we want | |
3091 ThreadInVMfromUnknown __tiv; | |
3092 #endif /* PROPER_TRANSITIONS */ | |
3093 r = rmonitor->raw_exit(current_thread); | |
3094 } else { | |
3095 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
3096 r = rmonitor->raw_exit(thread); | |
3097 } else { | |
3098 ShouldNotReachHere(); | |
3099 } | |
3100 } | |
3101 | |
3102 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
3103 err = JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3104 } else { | |
3105 assert(r == ObjectMonitor::OM_OK, "raw_exit should have worked"); | |
3106 if (r != ObjectMonitor::OM_OK) { // robustness | |
3107 err = JVMTI_ERROR_INTERNAL; | |
3108 } | |
3109 } | |
3110 } | |
3111 return err; | |
3112 } /* end RawMonitorExit */ | |
3113 | |
3114 | |
3115 // rmonitor - pre-checked for validity | |
3116 jvmtiError | |
3117 JvmtiEnv::RawMonitorWait(JvmtiRawMonitor * rmonitor, jlong millis) { | |
3118 int r; | |
3119 Thread* thread = Thread::current(); | |
3120 | |
3121 if (thread->is_Java_thread()) { | |
3122 JavaThread* current_thread = (JavaThread*)thread; | |
3123 #ifdef PROPER_TRANSITIONS | |
3124 // Not really unknown but ThreadInVMfromNative does more than we want | |
3125 ThreadInVMfromUnknown __tiv; | |
3126 { | |
3127 ThreadBlockInVM __tbivm(current_thread); | |
3128 r = rmonitor->raw_wait(millis, true, current_thread); | |
3129 } | |
3130 #else | |
3131 /* Transition to thread_blocked without entering vm state */ | |
3132 /* This is really evil. Normally you can't undo _thread_blocked */ | |
3133 /* transitions like this because it would cause us to miss a */ | |
3134 /* safepoint but since the thread was already in _thread_in_native */ | |
3135 /* the thread is not leaving a safepoint safe state and it will */ | |
3136 /* block when it tries to return from native. We can't safepoint */ | |
3137 /* block in here because we could deadlock the vmthread. Blech. */ | |
3138 | |
3139 JavaThreadState state = current_thread->thread_state(); | |
3140 assert(state == _thread_in_native, "Must be _thread_in_native"); | |
3141 // frame should already be walkable since we are in native | |
3142 assert(!current_thread->has_last_Java_frame() || | |
3143 current_thread->frame_anchor()->walkable(), "Must be walkable"); | |
3144 current_thread->set_thread_state(_thread_blocked); | |
3145 | |
3146 r = rmonitor->raw_wait(millis, true, current_thread); | |
3147 // restore state, still at a safepoint safe state | |
3148 current_thread->set_thread_state(state); | |
3149 | |
3150 #endif /* PROPER_TRANSITIONS */ | |
3151 } else { | |
3152 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
3153 r = rmonitor->raw_wait(millis, true, thread); | |
3154 } else { | |
3155 ShouldNotReachHere(); | |
3156 } | |
3157 } | |
3158 | |
3159 switch (r) { | |
3160 case ObjectMonitor::OM_INTERRUPTED: | |
3161 return JVMTI_ERROR_INTERRUPT; | |
3162 case ObjectMonitor::OM_ILLEGAL_MONITOR_STATE: | |
3163 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3164 } | |
3165 assert(r == ObjectMonitor::OM_OK, "raw_wait should have worked"); | |
3166 if (r != ObjectMonitor::OM_OK) { // robustness | |
3167 return JVMTI_ERROR_INTERNAL; | |
3168 } | |
3169 | |
3170 return JVMTI_ERROR_NONE; | |
3171 } /* end RawMonitorWait */ | |
3172 | |
3173 | |
3174 // rmonitor - pre-checked for validity | |
3175 jvmtiError | |
3176 JvmtiEnv::RawMonitorNotify(JvmtiRawMonitor * rmonitor) { | |
3177 int r; | |
3178 Thread* thread = Thread::current(); | |
3179 | |
3180 if (thread->is_Java_thread()) { | |
3181 JavaThread* current_thread = (JavaThread*)thread; | |
3182 // Not really unknown but ThreadInVMfromNative does more than we want | |
3183 ThreadInVMfromUnknown __tiv; | |
3184 r = rmonitor->raw_notify(current_thread); | |
3185 } else { | |
3186 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
3187 r = rmonitor->raw_notify(thread); | |
3188 } else { | |
3189 ShouldNotReachHere(); | |
3190 } | |
3191 } | |
3192 | |
3193 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
3194 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3195 } | |
3196 assert(r == ObjectMonitor::OM_OK, "raw_notify should have worked"); | |
3197 if (r != ObjectMonitor::OM_OK) { // robustness | |
3198 return JVMTI_ERROR_INTERNAL; | |
3199 } | |
3200 | |
3201 return JVMTI_ERROR_NONE; | |
3202 } /* end RawMonitorNotify */ | |
3203 | |
3204 | |
3205 // rmonitor - pre-checked for validity | |
3206 jvmtiError | |
3207 JvmtiEnv::RawMonitorNotifyAll(JvmtiRawMonitor * rmonitor) { | |
3208 int r; | |
3209 Thread* thread = Thread::current(); | |
3210 | |
3211 if (thread->is_Java_thread()) { | |
3212 JavaThread* current_thread = (JavaThread*)thread; | |
3213 ThreadInVMfromUnknown __tiv; | |
3214 r = rmonitor->raw_notifyAll(current_thread); | |
3215 } else { | |
3216 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
3217 r = rmonitor->raw_notifyAll(thread); | |
3218 } else { | |
3219 ShouldNotReachHere(); | |
3220 } | |
3221 } | |
3222 | |
3223 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
3224 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3225 } | |
3226 assert(r == ObjectMonitor::OM_OK, "raw_notifyAll should have worked"); | |
3227 if (r != ObjectMonitor::OM_OK) { // robustness | |
3228 return JVMTI_ERROR_INTERNAL; | |
3229 } | |
3230 | |
3231 return JVMTI_ERROR_NONE; | |
3232 } /* end RawMonitorNotifyAll */ | |
3233 | |
3234 | |
3235 // | |
3236 // JNI Function Interception functions | |
3237 // | |
3238 | |
3239 | |
3240 // function_table - pre-checked for NULL | |
3241 jvmtiError | |
3242 JvmtiEnv::SetJNIFunctionTable(const jniNativeInterface* function_table) { | |
3243 // Copy jni function table at safepoint. | |
3244 VM_JNIFunctionTableCopier copier(function_table); | |
3245 VMThread::execute(&copier); | |
3246 | |
3247 return JVMTI_ERROR_NONE; | |
3248 } /* end SetJNIFunctionTable */ | |
3249 | |
3250 | |
3251 // function_table - pre-checked for NULL | |
3252 jvmtiError | |
3253 JvmtiEnv::GetJNIFunctionTable(jniNativeInterface** function_table) { | |
3254 *function_table=(jniNativeInterface*)jvmtiMalloc(sizeof(jniNativeInterface)); | |
3255 if (*function_table == NULL) | |
3256 return JVMTI_ERROR_OUT_OF_MEMORY; | |
3257 memcpy(*function_table,(JavaThread::current())->get_jni_functions(),sizeof(jniNativeInterface)); | |
3258 return JVMTI_ERROR_NONE; | |
3259 } /* end GetJNIFunctionTable */ | |
3260 | |
3261 | |
3262 // | |
3263 // Event Management functions | |
3264 // | |
3265 | |
3266 jvmtiError | |
3267 JvmtiEnv::GenerateEvents(jvmtiEvent event_type) { | |
3268 // can only generate two event types | |
3269 if (event_type != JVMTI_EVENT_COMPILED_METHOD_LOAD && | |
3270 event_type != JVMTI_EVENT_DYNAMIC_CODE_GENERATED) { | |
3271 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
3272 } | |
3273 | |
3274 // for compiled_method_load events we must check that the environment | |
3275 // has the can_generate_compiled_method_load_events capability. | |
3276 if (event_type == JVMTI_EVENT_COMPILED_METHOD_LOAD) { | |
3277 if (get_capabilities()->can_generate_compiled_method_load_events == 0) { | |
3278 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; | |
3279 } | |
3280 return JvmtiCodeBlobEvents::generate_compiled_method_load_events(this); | |
3281 } else { | |
3282 return JvmtiCodeBlobEvents::generate_dynamic_code_events(this); | |
3283 } | |
3284 | |
3285 } /* end GenerateEvents */ | |
3286 | |
3287 | |
3288 // | |
3289 // Extension Mechanism functions | |
3290 // | |
3291 | |
3292 // extension_count_ptr - pre-checked for NULL | |
3293 // extensions - pre-checked for NULL | |
3294 jvmtiError | |
3295 JvmtiEnv::GetExtensionFunctions(jint* extension_count_ptr, jvmtiExtensionFunctionInfo** extensions) { | |
3296 return JvmtiExtensions::get_functions(this, extension_count_ptr, extensions); | |
3297 } /* end GetExtensionFunctions */ | |
3298 | |
3299 | |
3300 // extension_count_ptr - pre-checked for NULL | |
3301 // extensions - pre-checked for NULL | |
3302 jvmtiError | |
3303 JvmtiEnv::GetExtensionEvents(jint* extension_count_ptr, jvmtiExtensionEventInfo** extensions) { | |
3304 return JvmtiExtensions::get_events(this, extension_count_ptr, extensions); | |
3305 } /* end GetExtensionEvents */ | |
3306 | |
3307 | |
3308 // callback - NULL is a valid value, must be checked | |
3309 jvmtiError | |
3310 JvmtiEnv::SetExtensionEventCallback(jint extension_event_index, jvmtiExtensionEvent callback) { | |
3311 return JvmtiExtensions::set_event_callback(this, extension_event_index, callback); | |
3312 } /* end SetExtensionEventCallback */ | |
3313 | |
3314 // | |
3315 // Timers functions | |
3316 // | |
3317 | |
3318 // info_ptr - pre-checked for NULL | |
3319 jvmtiError | |
3320 JvmtiEnv::GetCurrentThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) { | |
3321 os::current_thread_cpu_time_info(info_ptr); | |
3322 return JVMTI_ERROR_NONE; | |
3323 } /* end GetCurrentThreadCpuTimerInfo */ | |
3324 | |
3325 | |
3326 // nanos_ptr - pre-checked for NULL | |
3327 jvmtiError | |
3328 JvmtiEnv::GetCurrentThreadCpuTime(jlong* nanos_ptr) { | |
3329 *nanos_ptr = os::current_thread_cpu_time(); | |
3330 return JVMTI_ERROR_NONE; | |
3331 } /* end GetCurrentThreadCpuTime */ | |
3332 | |
3333 | |
3334 // info_ptr - pre-checked for NULL | |
3335 jvmtiError | |
3336 JvmtiEnv::GetThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) { | |
3337 os::thread_cpu_time_info(info_ptr); | |
3338 return JVMTI_ERROR_NONE; | |
3339 } /* end GetThreadCpuTimerInfo */ | |
3340 | |
3341 | |
3342 // Threads_lock NOT held, java_thread not protected by lock | |
3343 // java_thread - pre-checked | |
3344 // nanos_ptr - pre-checked for NULL | |
3345 jvmtiError | |
3346 JvmtiEnv::GetThreadCpuTime(JavaThread* java_thread, jlong* nanos_ptr) { | |
3347 *nanos_ptr = os::thread_cpu_time(java_thread); | |
3348 return JVMTI_ERROR_NONE; | |
3349 } /* end GetThreadCpuTime */ | |
3350 | |
3351 | |
3352 // info_ptr - pre-checked for NULL | |
3353 jvmtiError | |
3354 JvmtiEnv::GetTimerInfo(jvmtiTimerInfo* info_ptr) { | |
3355 os::javaTimeNanos_info(info_ptr); | |
3356 return JVMTI_ERROR_NONE; | |
3357 } /* end GetTimerInfo */ | |
3358 | |
3359 | |
3360 // nanos_ptr - pre-checked for NULL | |
3361 jvmtiError | |
3362 JvmtiEnv::GetTime(jlong* nanos_ptr) { | |
3363 *nanos_ptr = os::javaTimeNanos(); | |
3364 return JVMTI_ERROR_NONE; | |
3365 } /* end GetTime */ | |
3366 | |
3367 | |
3368 // processor_count_ptr - pre-checked for NULL | |
3369 jvmtiError | |
3370 JvmtiEnv::GetAvailableProcessors(jint* processor_count_ptr) { | |
3371 *processor_count_ptr = os::active_processor_count(); | |
3372 return JVMTI_ERROR_NONE; | |
3373 } /* end GetAvailableProcessors */ | |
3374 | |
3375 // | |
3376 // System Properties functions | |
3377 // | |
3378 | |
3379 // count_ptr - pre-checked for NULL | |
3380 // property_ptr - pre-checked for NULL | |
3381 jvmtiError | |
3382 JvmtiEnv::GetSystemProperties(jint* count_ptr, char*** property_ptr) { | |
3383 jvmtiError err = JVMTI_ERROR_NONE; | |
3384 | |
3385 *count_ptr = Arguments::PropertyList_count(Arguments::system_properties()); | |
3386 | |
3387 err = allocate(*count_ptr * sizeof(char *), (unsigned char **)property_ptr); | |
3388 if (err != JVMTI_ERROR_NONE) { | |
3389 return err; | |
3390 } | |
3391 int i = 0 ; | |
3392 for (SystemProperty* p = Arguments::system_properties(); p != NULL && i < *count_ptr; p = p->next(), i++) { | |
3393 const char *key = p->key(); | |
3394 char **tmp_value = *property_ptr+i; | |
3395 err = allocate((strlen(key)+1) * sizeof(char), (unsigned char**)tmp_value); | |
3396 if (err == JVMTI_ERROR_NONE) { | |
3397 strcpy(*tmp_value, key); | |
3398 } else { | |
3399 // clean up previously allocated memory. | |
3400 for (int j=0; j<i; j++) { | |
3401 Deallocate((unsigned char*)*property_ptr+j); | |
3402 } | |
3403 Deallocate((unsigned char*)property_ptr); | |
3404 break; | |
3405 } | |
3406 } | |
3407 return err; | |
3408 } /* end GetSystemProperties */ | |
3409 | |
3410 | |
3411 // property - pre-checked for NULL | |
3412 // value_ptr - pre-checked for NULL | |
3413 jvmtiError | |
3414 JvmtiEnv::GetSystemProperty(const char* property, char** value_ptr) { | |
3415 jvmtiError err = JVMTI_ERROR_NONE; | |
3416 const char *value; | |
3417 | |
3418 value = Arguments::PropertyList_get_value(Arguments::system_properties(), property); | |
3419 if (value == NULL) { | |
3420 err = JVMTI_ERROR_NOT_AVAILABLE; | |
3421 } else { | |
3422 err = allocate((strlen(value)+1) * sizeof(char), (unsigned char **)value_ptr); | |
3423 if (err == JVMTI_ERROR_NONE) { | |
3424 strcpy(*value_ptr, value); | |
3425 } | |
3426 } | |
3427 return err; | |
3428 } /* end GetSystemProperty */ | |
3429 | |
3430 | |
3431 // property - pre-checked for NULL | |
3432 // value - NULL is a valid value, must be checked | |
3433 jvmtiError | |
2100
b1a2afa37ec4
7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents:
2019
diff
changeset
|
3434 JvmtiEnv::SetSystemProperty(const char* property, const char* value_ptr) { |
0 | 3435 jvmtiError err =JVMTI_ERROR_NOT_AVAILABLE; |
3436 | |
3437 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
3438 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
|
3439 if (p->set_value((char *)value_ptr)) { |
0 | 3440 err = JVMTI_ERROR_NONE; |
3441 } | |
3442 } | |
3443 } | |
3444 return err; | |
3445 } /* end SetSystemProperty */ |