Mercurial > hg > truffle
annotate src/share/vm/prims/jvmtiEnv.cpp @ 14229:d16be2b85802
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Reviewed-by: kvn, iveresov
author | twisti |
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date | Tue, 07 Jan 2014 14:26:12 -0800 |
parents | b8860472c377 |
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0 | 1 /* |
7951 | 2 * Copyright (c) 2003, 2013, 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 |
1002 uint32_t debug_bits = 0; | |
1003 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
1004 err = get_owned_monitors(calling_thread, java_thread, owned_monitors_list); | |
1005 } else { | |
1006 // JVMTI get monitors info at safepoint. Do not require target thread to | |
1007 // be suspended. | |
1008 VM_GetOwnedMonitorInfo op(this, calling_thread, java_thread, owned_monitors_list); | |
1009 VMThread::execute(&op); | |
1010 err = op.result(); | |
1011 } | |
1012 jint owned_monitor_count = owned_monitors_list->length(); | |
1013 if (err == JVMTI_ERROR_NONE) { | |
1014 if ((err = allocate(owned_monitor_count * sizeof(jobject *), | |
1015 (unsigned char**)owned_monitors_ptr)) == JVMTI_ERROR_NONE) { | |
1016 // copy into the returned array | |
1017 for (int i = 0; i < owned_monitor_count; i++) { | |
1018 (*owned_monitors_ptr)[i] = | |
1019 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->monitor; | |
1020 } | |
1021 *owned_monitor_count_ptr = owned_monitor_count; | |
1022 } | |
1023 } | |
1024 // clean up. | |
1025 for (int i = 0; i < owned_monitor_count; i++) { | |
1026 deallocate((unsigned char*)owned_monitors_list->at(i)); | |
1027 } | |
1028 delete owned_monitors_list; | |
1029 | |
1030 return err; | |
1031 } /* end GetOwnedMonitorInfo */ | |
1032 | |
1033 | |
1034 // Threads_lock NOT held, java_thread not protected by lock | |
1035 // java_thread - pre-checked | |
1036 // monitor_info_count_ptr - pre-checked for NULL | |
1037 // monitor_info_ptr - pre-checked for NULL | |
1038 jvmtiError | |
1039 JvmtiEnv::GetOwnedMonitorStackDepthInfo(JavaThread* java_thread, jint* monitor_info_count_ptr, jvmtiMonitorStackDepthInfo** monitor_info_ptr) { | |
1040 jvmtiError err = JVMTI_ERROR_NONE; | |
1041 JavaThread* calling_thread = JavaThread::current(); | |
1042 | |
1043 // growable array of jvmti monitors info on the C-heap | |
1044 GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list = | |
6197 | 1045 new (ResourceObj::C_HEAP, mtInternal) GrowableArray<jvmtiMonitorStackDepthInfo*>(1, true); |
0 | 1046 |
1047 uint32_t debug_bits = 0; | |
1048 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
1049 err = get_owned_monitors(calling_thread, java_thread, owned_monitors_list); | |
1050 } else { | |
1051 // JVMTI get owned monitors info at safepoint. Do not require target thread to | |
1052 // be suspended. | |
1053 VM_GetOwnedMonitorInfo op(this, calling_thread, java_thread, owned_monitors_list); | |
1054 VMThread::execute(&op); | |
1055 err = op.result(); | |
1056 } | |
1057 | |
1058 jint owned_monitor_count = owned_monitors_list->length(); | |
1059 if (err == JVMTI_ERROR_NONE) { | |
1060 if ((err = allocate(owned_monitor_count * sizeof(jvmtiMonitorStackDepthInfo), | |
1061 (unsigned char**)monitor_info_ptr)) == JVMTI_ERROR_NONE) { | |
1062 // copy to output array. | |
1063 for (int i = 0; i < owned_monitor_count; i++) { | |
1064 (*monitor_info_ptr)[i].monitor = | |
1065 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->monitor; | |
1066 (*monitor_info_ptr)[i].stack_depth = | |
1067 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->stack_depth; | |
1068 } | |
1069 } | |
1070 *monitor_info_count_ptr = owned_monitor_count; | |
1071 } | |
1072 | |
1073 // clean up. | |
1074 for (int i = 0; i < owned_monitor_count; i++) { | |
1075 deallocate((unsigned char*)owned_monitors_list->at(i)); | |
1076 } | |
1077 delete owned_monitors_list; | |
1078 | |
1079 return err; | |
1080 } /* end GetOwnedMonitorStackDepthInfo */ | |
1081 | |
1082 | |
1083 // Threads_lock NOT held, java_thread not protected by lock | |
1084 // java_thread - pre-checked | |
1085 // monitor_ptr - pre-checked for NULL | |
1086 jvmtiError | |
1087 JvmtiEnv::GetCurrentContendedMonitor(JavaThread* java_thread, jobject* monitor_ptr) { | |
1088 jvmtiError err = JVMTI_ERROR_NONE; | |
1089 uint32_t debug_bits = 0; | |
1090 JavaThread* calling_thread = JavaThread::current(); | |
1091 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
1092 err = get_current_contended_monitor(calling_thread, java_thread, monitor_ptr); | |
1093 } else { | |
1094 // get contended monitor information at safepoint. | |
1095 VM_GetCurrentContendedMonitor op(this, calling_thread, java_thread, monitor_ptr); | |
1096 VMThread::execute(&op); | |
1097 err = op.result(); | |
1098 } | |
1099 return err; | |
1100 } /* end GetCurrentContendedMonitor */ | |
1101 | |
1102 | |
1103 // Threads_lock NOT held | |
1104 // thread - NOT pre-checked | |
1105 // proc - pre-checked for NULL | |
1106 // arg - NULL is a valid value, must be checked | |
1107 jvmtiError | |
1108 JvmtiEnv::RunAgentThread(jthread thread, jvmtiStartFunction proc, const void* arg, jint priority) { | |
1109 oop thread_oop = JNIHandles::resolve_external_guard(thread); | |
1142 | 1110 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) { |
0 | 1111 return JVMTI_ERROR_INVALID_THREAD; |
1112 } | |
1113 if (priority < JVMTI_THREAD_MIN_PRIORITY || priority > JVMTI_THREAD_MAX_PRIORITY) { | |
1114 return JVMTI_ERROR_INVALID_PRIORITY; | |
1115 } | |
1116 | |
1117 //Thread-self | |
1118 JavaThread* current_thread = JavaThread::current(); | |
1119 | |
1120 Handle thread_hndl(current_thread, thread_oop); | |
1121 { | |
1122 MutexLocker mu(Threads_lock); // grab Threads_lock | |
1123 | |
1124 JvmtiAgentThread *new_thread = new JvmtiAgentThread(this, proc, arg); | |
1125 | |
1126 // At this point it may be possible that no osthread was created for the | |
1127 // JavaThread due to lack of memory. | |
1128 if (new_thread == NULL || new_thread->osthread() == NULL) { | |
1129 if (new_thread) delete new_thread; | |
1130 return JVMTI_ERROR_OUT_OF_MEMORY; | |
1131 } | |
1132 | |
1133 java_lang_Thread::set_thread(thread_hndl(), new_thread); | |
1134 java_lang_Thread::set_priority(thread_hndl(), (ThreadPriority)priority); | |
1135 java_lang_Thread::set_daemon(thread_hndl()); | |
1136 | |
1137 new_thread->set_threadObj(thread_hndl()); | |
1138 Threads::add(new_thread); | |
1139 Thread::start(new_thread); | |
1140 } // unlock Threads_lock | |
1141 | |
1142 return JVMTI_ERROR_NONE; | |
1143 } /* end RunAgentThread */ | |
1144 | |
1145 // | |
1146 // Thread Group functions | |
1147 // | |
1148 | |
1149 // group_count_ptr - pre-checked for NULL | |
1150 // groups_ptr - pre-checked for NULL | |
1151 jvmtiError | |
1152 JvmtiEnv::GetTopThreadGroups(jint* group_count_ptr, jthreadGroup** groups_ptr) { | |
1153 JavaThread* current_thread = JavaThread::current(); | |
1154 | |
1155 // Only one top level thread group now. | |
1156 *group_count_ptr = 1; | |
1157 | |
1158 // Allocate memory to store global-refs to the thread groups. | |
1159 // Assume this area is freed by caller. | |
1160 *groups_ptr = (jthreadGroup *) jvmtiMalloc((sizeof(jthreadGroup)) * (*group_count_ptr)); | |
1161 | |
1162 NULL_CHECK(*groups_ptr, JVMTI_ERROR_OUT_OF_MEMORY); | |
1163 | |
1164 // Convert oop to Handle, then convert Handle to global-ref. | |
1165 { | |
1166 HandleMark hm(current_thread); | |
1167 Handle system_thread_group(current_thread, Universe::system_thread_group()); | |
1168 *groups_ptr[0] = jni_reference(system_thread_group); | |
1169 } | |
1170 | |
1171 return JVMTI_ERROR_NONE; | |
1172 } /* end GetTopThreadGroups */ | |
1173 | |
1174 | |
1175 // info_ptr - pre-checked for NULL | |
1176 jvmtiError | |
1177 JvmtiEnv::GetThreadGroupInfo(jthreadGroup group, jvmtiThreadGroupInfo* info_ptr) { | |
1178 ResourceMark rm; | |
1179 HandleMark hm; | |
1180 | |
1181 JavaThread* current_thread = JavaThread::current(); | |
1182 | |
1183 Handle group_obj (current_thread, JNIHandles::resolve_external_guard(group)); | |
1184 NULL_CHECK(group_obj(), JVMTI_ERROR_INVALID_THREAD_GROUP); | |
1185 | |
1186 typeArrayHandle name; | |
1187 Handle parent_group; | |
1188 bool is_daemon; | |
1189 ThreadPriority max_priority; | |
1190 | |
1191 { MutexLocker mu(Threads_lock); | |
1192 | |
1193 name = typeArrayHandle(current_thread, | |
1194 java_lang_ThreadGroup::name(group_obj())); | |
1195 parent_group = Handle(current_thread, java_lang_ThreadGroup::parent(group_obj())); | |
1196 is_daemon = java_lang_ThreadGroup::is_daemon(group_obj()); | |
1197 max_priority = java_lang_ThreadGroup::maxPriority(group_obj()); | |
1198 } | |
1199 | |
1200 info_ptr->is_daemon = is_daemon; | |
1201 info_ptr->max_priority = max_priority; | |
1202 info_ptr->parent = jni_reference(parent_group); | |
1203 | |
1204 if (name() != NULL) { | |
1205 const char* n = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length()); | |
1206 info_ptr->name = (char *)jvmtiMalloc(strlen(n)+1); | |
1207 NULL_CHECK(info_ptr->name, JVMTI_ERROR_OUT_OF_MEMORY); | |
1208 strcpy(info_ptr->name, n); | |
1209 } else { | |
1210 info_ptr->name = NULL; | |
1211 } | |
1212 | |
1213 return JVMTI_ERROR_NONE; | |
1214 } /* end GetThreadGroupInfo */ | |
1215 | |
1216 | |
1217 // thread_count_ptr - pre-checked for NULL | |
1218 // threads_ptr - pre-checked for NULL | |
1219 // group_count_ptr - pre-checked for NULL | |
1220 // groups_ptr - pre-checked for NULL | |
1221 jvmtiError | |
1222 JvmtiEnv::GetThreadGroupChildren(jthreadGroup group, jint* thread_count_ptr, jthread** threads_ptr, jint* group_count_ptr, jthreadGroup** groups_ptr) { | |
1223 JavaThread* current_thread = JavaThread::current(); | |
1224 oop group_obj = (oop) JNIHandles::resolve_external_guard(group); | |
1225 NULL_CHECK(group_obj, JVMTI_ERROR_INVALID_THREAD_GROUP); | |
1226 | |
1227 Handle *thread_objs = NULL; | |
1228 Handle *group_objs = NULL; | |
1229 int nthreads = 0; | |
1230 int ngroups = 0; | |
1231 int hidden_threads = 0; | |
1232 | |
1233 ResourceMark rm; | |
1234 HandleMark hm; | |
1235 | |
1236 Handle group_hdl(current_thread, group_obj); | |
1237 | |
1238 { MutexLocker mu(Threads_lock); | |
1239 | |
1240 nthreads = java_lang_ThreadGroup::nthreads(group_hdl()); | |
1241 ngroups = java_lang_ThreadGroup::ngroups(group_hdl()); | |
1242 | |
1243 if (nthreads > 0) { | |
1244 objArrayOop threads = java_lang_ThreadGroup::threads(group_hdl()); | |
1245 assert(nthreads <= threads->length(), "too many threads"); | |
1246 thread_objs = NEW_RESOURCE_ARRAY(Handle,nthreads); | |
1247 for (int i=0, j=0; i<nthreads; i++) { | |
1248 oop thread_obj = threads->obj_at(i); | |
1249 assert(thread_obj != NULL, "thread_obj is NULL"); | |
1250 JavaThread *javathread = java_lang_Thread::thread(thread_obj); | |
1251 // Filter out hidden java threads. | |
1252 if (javathread != NULL && javathread->is_hidden_from_external_view()) { | |
1253 hidden_threads++; | |
1254 continue; | |
1255 } | |
1256 thread_objs[j++] = Handle(current_thread, thread_obj); | |
1257 } | |
1258 nthreads -= hidden_threads; | |
1259 } | |
1260 if (ngroups > 0) { | |
1261 objArrayOop groups = java_lang_ThreadGroup::groups(group_hdl()); | |
1262 assert(ngroups <= groups->length(), "too many threads"); | |
1263 group_objs = NEW_RESOURCE_ARRAY(Handle,ngroups); | |
1264 for (int i=0; i<ngroups; i++) { | |
1265 oop group_obj = groups->obj_at(i); | |
1266 assert(group_obj != NULL, "group_obj != NULL"); | |
1267 group_objs[i] = Handle(current_thread, group_obj); | |
1268 } | |
1269 } | |
1270 } | |
1271 | |
1272 // have to make global handles outside of Threads_lock | |
1273 *group_count_ptr = ngroups; | |
1274 *thread_count_ptr = nthreads; | |
1275 *threads_ptr = new_jthreadArray(nthreads, thread_objs); | |
1276 *groups_ptr = new_jthreadGroupArray(ngroups, group_objs); | |
1277 if ((nthreads > 0) && (*threads_ptr == NULL)) { | |
1278 return JVMTI_ERROR_OUT_OF_MEMORY; | |
1279 } | |
1280 if ((ngroups > 0) && (*groups_ptr == NULL)) { | |
1281 return JVMTI_ERROR_OUT_OF_MEMORY; | |
1282 } | |
1283 | |
1284 return JVMTI_ERROR_NONE; | |
1285 } /* end GetThreadGroupChildren */ | |
1286 | |
1287 | |
1288 // | |
1289 // Stack Frame functions | |
1290 // | |
1291 | |
1292 // Threads_lock NOT held, java_thread not protected by lock | |
1293 // java_thread - pre-checked | |
1294 // max_frame_count - pre-checked to be greater than or equal to 0 | |
1295 // frame_buffer - pre-checked for NULL | |
1296 // count_ptr - pre-checked for NULL | |
1297 jvmtiError | |
1298 JvmtiEnv::GetStackTrace(JavaThread* java_thread, jint start_depth, jint max_frame_count, jvmtiFrameInfo* frame_buffer, jint* count_ptr) { | |
1299 jvmtiError err = JVMTI_ERROR_NONE; | |
1300 uint32_t debug_bits = 0; | |
1301 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
1302 err = get_stack_trace(java_thread, start_depth, max_frame_count, frame_buffer, count_ptr); | |
1303 } else { | |
1304 // JVMTI get stack trace at safepoint. Do not require target thread to | |
1305 // be suspended. | |
1306 VM_GetStackTrace op(this, java_thread, start_depth, max_frame_count, frame_buffer, count_ptr); | |
1307 VMThread::execute(&op); | |
1308 err = op.result(); | |
1309 } | |
1310 | |
1311 return err; | |
1312 } /* end GetStackTrace */ | |
1313 | |
1314 | |
1315 // max_frame_count - pre-checked to be greater than or equal to 0 | |
1316 // stack_info_ptr - pre-checked for NULL | |
1317 // thread_count_ptr - pre-checked for NULL | |
1318 jvmtiError | |
1319 JvmtiEnv::GetAllStackTraces(jint max_frame_count, jvmtiStackInfo** stack_info_ptr, jint* thread_count_ptr) { | |
1320 jvmtiError err = JVMTI_ERROR_NONE; | |
1321 JavaThread* calling_thread = JavaThread::current(); | |
1322 | |
1323 // JVMTI get stack traces at safepoint. | |
1324 VM_GetAllStackTraces op(this, calling_thread, max_frame_count); | |
1325 VMThread::execute(&op); | |
1326 *thread_count_ptr = op.final_thread_count(); | |
1327 *stack_info_ptr = op.stack_info(); | |
1328 err = op.result(); | |
1329 return err; | |
1330 } /* end GetAllStackTraces */ | |
1331 | |
1332 | |
1333 // thread_count - pre-checked to be greater than or equal to 0 | |
1334 // thread_list - pre-checked for NULL | |
1335 // max_frame_count - pre-checked to be greater than or equal to 0 | |
1336 // stack_info_ptr - pre-checked for NULL | |
1337 jvmtiError | |
1338 JvmtiEnv::GetThreadListStackTraces(jint thread_count, const jthread* thread_list, jint max_frame_count, jvmtiStackInfo** stack_info_ptr) { | |
1339 jvmtiError err = JVMTI_ERROR_NONE; | |
1340 // JVMTI get stack traces at safepoint. | |
1341 VM_GetThreadListStackTraces op(this, thread_count, thread_list, max_frame_count); | |
1342 VMThread::execute(&op); | |
1343 err = op.result(); | |
1344 if (err == JVMTI_ERROR_NONE) { | |
1345 *stack_info_ptr = op.stack_info(); | |
1346 } | |
1347 return err; | |
1348 } /* end GetThreadListStackTraces */ | |
1349 | |
1350 | |
1351 // Threads_lock NOT held, java_thread not protected by lock | |
1352 // java_thread - pre-checked | |
1353 // count_ptr - pre-checked for NULL | |
1354 jvmtiError | |
1355 JvmtiEnv::GetFrameCount(JavaThread* java_thread, jint* count_ptr) { | |
1356 jvmtiError err = JVMTI_ERROR_NONE; | |
1357 | |
1358 // retrieve or create JvmtiThreadState. | |
1359 JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread); | |
609
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1360 if (state == NULL) { |
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1361 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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1362 } |
0 | 1363 uint32_t debug_bits = 0; |
1364 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
1365 err = get_frame_count(state, count_ptr); | |
1366 } else { | |
1367 // get java stack frame count at safepoint. | |
1368 VM_GetFrameCount op(this, state, count_ptr); | |
1369 VMThread::execute(&op); | |
1370 err = op.result(); | |
1371 } | |
1372 return err; | |
1373 } /* end GetFrameCount */ | |
1374 | |
1375 | |
1376 // Threads_lock NOT held, java_thread not protected by lock | |
1377 // java_thread - pre-checked | |
1378 jvmtiError | |
1379 JvmtiEnv::PopFrame(JavaThread* java_thread) { | |
1380 JavaThread* current_thread = JavaThread::current(); | |
1381 HandleMark hm(current_thread); | |
1382 uint32_t debug_bits = 0; | |
1383 | |
609
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1384 // retrieve or create the state |
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1385 JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread); |
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1386 if (state == NULL) { |
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1387 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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1388 } |
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1389 |
0 | 1390 // Check if java_thread is fully suspended |
1391 if (!is_thread_fully_suspended(java_thread, true /* wait for suspend completion */, &debug_bits)) { | |
1392 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
1393 } | |
1394 // Check to see if a PopFrame was already in progress | |
1395 if (java_thread->popframe_condition() != JavaThread::popframe_inactive) { | |
1396 // Probably possible for JVMTI clients to trigger this, but the | |
1397 // JPDA backend shouldn't allow this to happen | |
1398 return JVMTI_ERROR_INTERNAL; | |
1399 } | |
1400 | |
1401 { | |
1402 // Was workaround bug | |
1403 // 4812902: popFrame hangs if the method is waiting at a synchronize | |
1404 // Catch this condition and return an error to avoid hanging. | |
1405 // Now JVMTI spec allows an implementation to bail out with an opaque frame error. | |
1406 OSThread* osThread = java_thread->osthread(); | |
1407 if (osThread->get_state() == MONITOR_WAIT) { | |
1408 return JVMTI_ERROR_OPAQUE_FRAME; | |
1409 } | |
1410 } | |
1411 | |
1412 { | |
1413 ResourceMark rm(current_thread); | |
1414 // Check if there are more than one Java frame in this thread, that the top two frames | |
1415 // are Java (not native) frames, and that there is no intervening VM frame | |
1416 int frame_count = 0; | |
1417 bool is_interpreted[2]; | |
1418 intptr_t *frame_sp[2]; | |
1419 // The 2-nd arg of constructor is needed to stop iterating at java entry frame. | |
1420 for (vframeStream vfs(java_thread, true); !vfs.at_end(); vfs.next()) { | |
1421 methodHandle mh(current_thread, vfs.method()); | |
1422 if (mh->is_native()) return(JVMTI_ERROR_OPAQUE_FRAME); | |
1423 is_interpreted[frame_count] = vfs.is_interpreted_frame(); | |
1424 frame_sp[frame_count] = vfs.frame_id(); | |
1425 if (++frame_count > 1) break; | |
1426 } | |
1427 if (frame_count < 2) { | |
1428 // We haven't found two adjacent non-native Java frames on the top. | |
1429 // There can be two situations here: | |
1430 // 1. There are no more java frames | |
1431 // 2. Two top java frames are separated by non-java native frames | |
1432 if(vframeFor(java_thread, 1) == NULL) { | |
1433 return JVMTI_ERROR_NO_MORE_FRAMES; | |
1434 } else { | |
1435 // Intervening non-java native or VM frames separate java frames. | |
1436 // Current implementation does not support this. See bug #5031735. | |
1437 // In theory it is possible to pop frames in such cases. | |
1438 return JVMTI_ERROR_OPAQUE_FRAME; | |
1439 } | |
1440 } | |
1441 | |
1442 // If any of the top 2 frames is a compiled one, need to deoptimize it | |
1443 for (int i = 0; i < 2; i++) { | |
1444 if (!is_interpreted[i]) { | |
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1445 Deoptimization::deoptimize_frame(java_thread, frame_sp[i]); |
0 | 1446 } |
1447 } | |
1448 | |
1449 // Update the thread state to reflect that the top frame is popped | |
1450 // so that cur_stack_depth is maintained properly and all frameIDs | |
1451 // are invalidated. | |
1452 // The current frame will be popped later when the suspended thread | |
1453 // is resumed and right before returning from VM to Java. | |
1454 // (see call_VM_base() in assembler_<cpu>.cpp). | |
1455 | |
1456 // It's fine to update the thread state here because no JVMTI events | |
1457 // shall be posted for this PopFrame. | |
1458 | |
1459 state->update_for_pop_top_frame(); | |
1460 java_thread->set_popframe_condition(JavaThread::popframe_pending_bit); | |
1461 // Set pending step flag for this popframe and it is cleared when next | |
1462 // step event is posted. | |
1463 state->set_pending_step_for_popframe(); | |
1464 } | |
1465 | |
1466 return JVMTI_ERROR_NONE; | |
1467 } /* end PopFrame */ | |
1468 | |
1469 | |
1470 // Threads_lock NOT held, java_thread not protected by lock | |
1471 // java_thread - pre-checked | |
1472 // java_thread - unchecked | |
1473 // depth - pre-checked as non-negative | |
1474 // method_ptr - pre-checked for NULL | |
1475 // location_ptr - pre-checked for NULL | |
1476 jvmtiError | |
1477 JvmtiEnv::GetFrameLocation(JavaThread* java_thread, jint depth, jmethodID* method_ptr, jlocation* location_ptr) { | |
1478 jvmtiError err = JVMTI_ERROR_NONE; | |
1479 uint32_t debug_bits = 0; | |
1480 | |
1481 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
1482 err = get_frame_location(java_thread, depth, method_ptr, location_ptr); | |
1483 } else { | |
1484 // JVMTI get java stack frame location at safepoint. | |
1485 VM_GetFrameLocation op(this, java_thread, depth, method_ptr, location_ptr); | |
1486 VMThread::execute(&op); | |
1487 err = op.result(); | |
1488 } | |
1489 return err; | |
1490 } /* end GetFrameLocation */ | |
1491 | |
1492 | |
1493 // Threads_lock NOT held, java_thread not protected by lock | |
1494 // java_thread - pre-checked | |
1495 // java_thread - unchecked | |
1496 // depth - pre-checked as non-negative | |
1497 jvmtiError | |
1498 JvmtiEnv::NotifyFramePop(JavaThread* java_thread, jint depth) { | |
1499 ResourceMark rm; | |
1500 uint32_t debug_bits = 0; | |
1501 | |
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1502 JvmtiThreadState *state = JvmtiThreadState::state_for(java_thread); |
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1503 if (state == NULL) { |
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1504 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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1505 } |
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1506 |
0 | 1507 if (!JvmtiEnv::is_thread_fully_suspended(java_thread, true, &debug_bits)) { |
1508 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
1509 } | |
1510 | |
1511 if (TraceJVMTICalls) { | |
1512 JvmtiSuspendControl::print(); | |
1513 } | |
1514 | |
1515 vframe *vf = vframeFor(java_thread, depth); | |
1516 if (vf == NULL) { | |
1517 return JVMTI_ERROR_NO_MORE_FRAMES; | |
1518 } | |
1519 | |
1520 if (!vf->is_java_frame() || ((javaVFrame*) vf)->method()->is_native()) { | |
1521 return JVMTI_ERROR_OPAQUE_FRAME; | |
1522 } | |
1523 | |
1524 assert(vf->frame_pointer() != NULL, "frame pointer mustn't be NULL"); | |
1525 | |
1526 int frame_number = state->count_frames() - depth; | |
1527 state->env_thread_state(this)->set_frame_pop(frame_number); | |
1528 | |
1529 return JVMTI_ERROR_NONE; | |
1530 } /* end NotifyFramePop */ | |
1531 | |
1532 | |
1533 // | |
1534 // Force Early Return functions | |
1535 // | |
1536 | |
1537 // Threads_lock NOT held, java_thread not protected by lock | |
1538 // java_thread - pre-checked | |
1539 jvmtiError | |
1540 JvmtiEnv::ForceEarlyReturnObject(JavaThread* java_thread, jobject value) { | |
1541 jvalue val; | |
1542 val.l = value; | |
1543 return force_early_return(java_thread, val, atos); | |
1544 } /* end ForceEarlyReturnObject */ | |
1545 | |
1546 | |
1547 // Threads_lock NOT held, java_thread not protected by lock | |
1548 // java_thread - pre-checked | |
1549 jvmtiError | |
1550 JvmtiEnv::ForceEarlyReturnInt(JavaThread* java_thread, jint value) { | |
1551 jvalue val; | |
1552 val.i = value; | |
1553 return force_early_return(java_thread, val, itos); | |
1554 } /* end ForceEarlyReturnInt */ | |
1555 | |
1556 | |
1557 // Threads_lock NOT held, java_thread not protected by lock | |
1558 // java_thread - pre-checked | |
1559 jvmtiError | |
1560 JvmtiEnv::ForceEarlyReturnLong(JavaThread* java_thread, jlong value) { | |
1561 jvalue val; | |
1562 val.j = value; | |
1563 return force_early_return(java_thread, val, ltos); | |
1564 } /* end ForceEarlyReturnLong */ | |
1565 | |
1566 | |
1567 // Threads_lock NOT held, java_thread not protected by lock | |
1568 // java_thread - pre-checked | |
1569 jvmtiError | |
1570 JvmtiEnv::ForceEarlyReturnFloat(JavaThread* java_thread, jfloat value) { | |
1571 jvalue val; | |
1572 val.f = value; | |
1573 return force_early_return(java_thread, val, ftos); | |
1574 } /* end ForceEarlyReturnFloat */ | |
1575 | |
1576 | |
1577 // Threads_lock NOT held, java_thread not protected by lock | |
1578 // java_thread - pre-checked | |
1579 jvmtiError | |
1580 JvmtiEnv::ForceEarlyReturnDouble(JavaThread* java_thread, jdouble value) { | |
1581 jvalue val; | |
1582 val.d = value; | |
1583 return force_early_return(java_thread, val, dtos); | |
1584 } /* end ForceEarlyReturnDouble */ | |
1585 | |
1586 | |
1587 // Threads_lock NOT held, java_thread not protected by lock | |
1588 // java_thread - pre-checked | |
1589 jvmtiError | |
1590 JvmtiEnv::ForceEarlyReturnVoid(JavaThread* java_thread) { | |
1591 jvalue val; | |
1592 val.j = 0L; | |
1593 return force_early_return(java_thread, val, vtos); | |
1594 } /* end ForceEarlyReturnVoid */ | |
1595 | |
1596 | |
1597 // | |
1598 // Heap functions | |
1599 // | |
1600 | |
1601 // klass - NULL is a valid value, must be checked | |
1602 // initial_object - NULL is a valid value, must be checked | |
1603 // callbacks - pre-checked for NULL | |
1604 // user_data - NULL is a valid value, must be checked | |
1605 jvmtiError | |
1606 JvmtiEnv::FollowReferences(jint heap_filter, jclass klass, jobject initial_object, const jvmtiHeapCallbacks* callbacks, const void* user_data) { | |
1607 // check klass if provided | |
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1608 Klass* k_oop = NULL; |
0 | 1609 if (klass != NULL) { |
1610 oop k_mirror = JNIHandles::resolve_external_guard(klass); | |
1611 if (k_mirror == NULL) { | |
1612 return JVMTI_ERROR_INVALID_CLASS; | |
1613 } | |
1614 if (java_lang_Class::is_primitive(k_mirror)) { | |
1615 return JVMTI_ERROR_NONE; | |
1616 } | |
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1617 k_oop = java_lang_Class::as_Klass(k_mirror); |
0 | 1618 if (k_oop == NULL) { |
1619 return JVMTI_ERROR_INVALID_CLASS; | |
1620 } | |
1621 } | |
1622 | |
1623 Thread *thread = Thread::current(); | |
1624 HandleMark hm(thread); | |
1625 KlassHandle kh (thread, k_oop); | |
1626 | |
1627 TraceTime t("FollowReferences", TraceJVMTIObjectTagging); | |
1628 JvmtiTagMap::tag_map_for(this)->follow_references(heap_filter, kh, initial_object, callbacks, user_data); | |
1629 return JVMTI_ERROR_NONE; | |
1630 } /* end FollowReferences */ | |
1631 | |
1632 | |
1633 // klass - NULL is a valid value, must be checked | |
1634 // callbacks - pre-checked for NULL | |
1635 // user_data - NULL is a valid value, must be checked | |
1636 jvmtiError | |
1637 JvmtiEnv::IterateThroughHeap(jint heap_filter, jclass klass, const jvmtiHeapCallbacks* callbacks, const void* user_data) { | |
1638 // check klass if provided | |
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1639 Klass* k_oop = NULL; |
0 | 1640 if (klass != NULL) { |
1641 oop k_mirror = JNIHandles::resolve_external_guard(klass); | |
1642 if (k_mirror == NULL) { | |
1643 return JVMTI_ERROR_INVALID_CLASS; | |
1644 } | |
1645 if (java_lang_Class::is_primitive(k_mirror)) { | |
1646 return JVMTI_ERROR_NONE; | |
1647 } | |
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1648 k_oop = java_lang_Class::as_Klass(k_mirror); |
0 | 1649 if (k_oop == NULL) { |
1650 return JVMTI_ERROR_INVALID_CLASS; | |
1651 } | |
1652 } | |
1653 | |
1654 Thread *thread = Thread::current(); | |
1655 HandleMark hm(thread); | |
1656 KlassHandle kh (thread, k_oop); | |
1657 | |
1658 TraceTime t("IterateThroughHeap", TraceJVMTIObjectTagging); | |
1659 JvmtiTagMap::tag_map_for(this)->iterate_through_heap(heap_filter, kh, callbacks, user_data); | |
1660 return JVMTI_ERROR_NONE; | |
1661 } /* end IterateThroughHeap */ | |
1662 | |
1663 | |
1664 // tag_ptr - pre-checked for NULL | |
1665 jvmtiError | |
1666 JvmtiEnv::GetTag(jobject object, jlong* tag_ptr) { | |
1667 oop o = JNIHandles::resolve_external_guard(object); | |
1668 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
1669 *tag_ptr = JvmtiTagMap::tag_map_for(this)->get_tag(object); | |
1670 return JVMTI_ERROR_NONE; | |
1671 } /* end GetTag */ | |
1672 | |
1673 | |
1674 jvmtiError | |
1675 JvmtiEnv::SetTag(jobject object, jlong tag) { | |
1676 oop o = JNIHandles::resolve_external_guard(object); | |
1677 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
1678 JvmtiTagMap::tag_map_for(this)->set_tag(object, tag); | |
1679 return JVMTI_ERROR_NONE; | |
1680 } /* end SetTag */ | |
1681 | |
1682 | |
1683 // tag_count - pre-checked to be greater than or equal to 0 | |
1684 // tags - pre-checked for NULL | |
1685 // count_ptr - pre-checked for NULL | |
1686 // object_result_ptr - NULL is a valid value, must be checked | |
1687 // tag_result_ptr - NULL is a valid value, must be checked | |
1688 jvmtiError | |
1689 JvmtiEnv::GetObjectsWithTags(jint tag_count, const jlong* tags, jint* count_ptr, jobject** object_result_ptr, jlong** tag_result_ptr) { | |
1690 TraceTime t("GetObjectsWithTags", TraceJVMTIObjectTagging); | |
1691 return JvmtiTagMap::tag_map_for(this)->get_objects_with_tags((jlong*)tags, tag_count, count_ptr, object_result_ptr, tag_result_ptr); | |
1692 } /* end GetObjectsWithTags */ | |
1693 | |
1694 | |
1695 jvmtiError | |
1696 JvmtiEnv::ForceGarbageCollection() { | |
1697 Universe::heap()->collect(GCCause::_jvmti_force_gc); | |
1698 return JVMTI_ERROR_NONE; | |
1699 } /* end ForceGarbageCollection */ | |
1700 | |
1701 | |
1702 // | |
1703 // Heap (1.0) functions | |
1704 // | |
1705 | |
1706 // object_reference_callback - pre-checked for NULL | |
1707 // user_data - NULL is a valid value, must be checked | |
1708 jvmtiError | |
1709 JvmtiEnv::IterateOverObjectsReachableFromObject(jobject object, jvmtiObjectReferenceCallback object_reference_callback, const void* user_data) { | |
1710 oop o = JNIHandles::resolve_external_guard(object); | |
1711 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
1712 JvmtiTagMap::tag_map_for(this)->iterate_over_objects_reachable_from_object(object, object_reference_callback, user_data); | |
1713 return JVMTI_ERROR_NONE; | |
1714 } /* end IterateOverObjectsReachableFromObject */ | |
1715 | |
1716 | |
1717 // heap_root_callback - NULL is a valid value, must be checked | |
1718 // stack_ref_callback - NULL is a valid value, must be checked | |
1719 // object_ref_callback - NULL is a valid value, must be checked | |
1720 // user_data - NULL is a valid value, must be checked | |
1721 jvmtiError | |
1722 JvmtiEnv::IterateOverReachableObjects(jvmtiHeapRootCallback heap_root_callback, jvmtiStackReferenceCallback stack_ref_callback, jvmtiObjectReferenceCallback object_ref_callback, const void* user_data) { | |
1723 TraceTime t("IterateOverReachableObjects", TraceJVMTIObjectTagging); | |
1724 JvmtiTagMap::tag_map_for(this)->iterate_over_reachable_objects(heap_root_callback, stack_ref_callback, object_ref_callback, user_data); | |
1725 return JVMTI_ERROR_NONE; | |
1726 } /* end IterateOverReachableObjects */ | |
1727 | |
1728 | |
1729 // heap_object_callback - pre-checked for NULL | |
1730 // user_data - NULL is a valid value, must be checked | |
1731 jvmtiError | |
1732 JvmtiEnv::IterateOverHeap(jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) { | |
1733 TraceTime t("IterateOverHeap", TraceJVMTIObjectTagging); | |
1734 Thread *thread = Thread::current(); | |
1735 HandleMark hm(thread); | |
1736 JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, KlassHandle(), heap_object_callback, user_data); | |
1737 return JVMTI_ERROR_NONE; | |
1738 } /* end IterateOverHeap */ | |
1739 | |
1740 | |
1741 // k_mirror - may be primitive, this must be checked | |
1742 // heap_object_callback - pre-checked for NULL | |
1743 // user_data - NULL is a valid value, must be checked | |
1744 jvmtiError | |
1745 JvmtiEnv::IterateOverInstancesOfClass(oop k_mirror, jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) { | |
1746 if (java_lang_Class::is_primitive(k_mirror)) { | |
1747 // DO PRIMITIVE CLASS PROCESSING | |
1748 return JVMTI_ERROR_NONE; | |
1749 } | |
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1750 Klass* k_oop = java_lang_Class::as_Klass(k_mirror); |
0 | 1751 if (k_oop == NULL) { |
1752 return JVMTI_ERROR_INVALID_CLASS; | |
1753 } | |
1754 Thread *thread = Thread::current(); | |
1755 HandleMark hm(thread); | |
1756 KlassHandle klass (thread, k_oop); | |
1757 TraceTime t("IterateOverInstancesOfClass", TraceJVMTIObjectTagging); | |
1758 JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, klass, heap_object_callback, user_data); | |
1759 return JVMTI_ERROR_NONE; | |
1760 } /* end IterateOverInstancesOfClass */ | |
1761 | |
1762 | |
1763 // | |
1764 // Local Variable functions | |
1765 // | |
1766 | |
1767 // Threads_lock NOT held, java_thread not protected by lock | |
1768 // java_thread - pre-checked | |
1769 // java_thread - unchecked | |
1770 // depth - pre-checked as non-negative | |
1771 // value_ptr - pre-checked for NULL | |
1772 jvmtiError | |
1773 JvmtiEnv::GetLocalObject(JavaThread* java_thread, jint depth, jint slot, jobject* value_ptr) { | |
1774 JavaThread* current_thread = JavaThread::current(); | |
1775 // rm object is created to clean up the javaVFrame created in | |
1776 // doit_prologue(), but after doit() is finished with it. | |
1777 ResourceMark rm(current_thread); | |
1778 | |
1779 VM_GetOrSetLocal op(java_thread, current_thread, depth, slot); | |
1780 VMThread::execute(&op); | |
1781 jvmtiError err = op.result(); | |
1782 if (err != JVMTI_ERROR_NONE) { | |
1783 return err; | |
1784 } else { | |
1785 *value_ptr = op.value().l; | |
1786 return JVMTI_ERROR_NONE; | |
1787 } | |
1788 } /* end GetLocalObject */ | |
1789 | |
2019 | 1790 // Threads_lock NOT held, java_thread not protected by lock |
1791 // java_thread - pre-checked | |
1792 // java_thread - unchecked | |
1793 // depth - pre-checked as non-negative | |
1794 // value - pre-checked for NULL | |
1795 jvmtiError | |
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1796 JvmtiEnv::GetLocalInstance(JavaThread* java_thread, jint depth, jobject* value_ptr){ |
2019 | 1797 JavaThread* current_thread = JavaThread::current(); |
1798 // rm object is created to clean up the javaVFrame created in | |
1799 // doit_prologue(), but after doit() is finished with it. | |
1800 ResourceMark rm(current_thread); | |
1801 | |
1802 VM_GetReceiver op(java_thread, current_thread, depth); | |
1803 VMThread::execute(&op); | |
1804 jvmtiError err = op.result(); | |
1805 if (err != JVMTI_ERROR_NONE) { | |
1806 return err; | |
1807 } else { | |
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1808 *value_ptr = op.value().l; |
2019 | 1809 return JVMTI_ERROR_NONE; |
1810 } | |
1811 } /* end GetLocalInstance */ | |
1812 | |
0 | 1813 |
1814 // Threads_lock NOT held, java_thread not protected by lock | |
1815 // java_thread - pre-checked | |
1816 // java_thread - unchecked | |
1817 // depth - pre-checked as non-negative | |
1818 // value_ptr - pre-checked for NULL | |
1819 jvmtiError | |
1820 JvmtiEnv::GetLocalInt(JavaThread* java_thread, jint depth, jint slot, jint* value_ptr) { | |
1821 // rm object is created to clean up the javaVFrame created in | |
1822 // doit_prologue(), but after doit() is finished with it. | |
1823 ResourceMark rm; | |
1824 | |
1825 VM_GetOrSetLocal op(java_thread, depth, slot, T_INT); | |
1826 VMThread::execute(&op); | |
1827 *value_ptr = op.value().i; | |
1828 return op.result(); | |
1829 } /* end GetLocalInt */ | |
1830 | |
1831 | |
1832 // Threads_lock NOT held, java_thread not protected by lock | |
1833 // java_thread - pre-checked | |
1834 // java_thread - unchecked | |
1835 // depth - pre-checked as non-negative | |
1836 // value_ptr - pre-checked for NULL | |
1837 jvmtiError | |
1838 JvmtiEnv::GetLocalLong(JavaThread* java_thread, jint depth, jint slot, jlong* value_ptr) { | |
1839 // rm object is created to clean up the javaVFrame created in | |
1840 // doit_prologue(), but after doit() is finished with it. | |
1841 ResourceMark rm; | |
1842 | |
1843 VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG); | |
1844 VMThread::execute(&op); | |
1845 *value_ptr = op.value().j; | |
1846 return op.result(); | |
1847 } /* end GetLocalLong */ | |
1848 | |
1849 | |
1850 // Threads_lock NOT held, java_thread not protected by lock | |
1851 // java_thread - pre-checked | |
1852 // java_thread - unchecked | |
1853 // depth - pre-checked as non-negative | |
1854 // value_ptr - pre-checked for NULL | |
1855 jvmtiError | |
1856 JvmtiEnv::GetLocalFloat(JavaThread* java_thread, jint depth, jint slot, jfloat* value_ptr) { | |
1857 // rm object is created to clean up the javaVFrame created in | |
1858 // doit_prologue(), but after doit() is finished with it. | |
1859 ResourceMark rm; | |
1860 | |
1861 VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT); | |
1862 VMThread::execute(&op); | |
1863 *value_ptr = op.value().f; | |
1864 return op.result(); | |
1865 } /* end GetLocalFloat */ | |
1866 | |
1867 | |
1868 // Threads_lock NOT held, java_thread not protected by lock | |
1869 // java_thread - pre-checked | |
1870 // java_thread - unchecked | |
1871 // depth - pre-checked as non-negative | |
1872 // value_ptr - pre-checked for NULL | |
1873 jvmtiError | |
1874 JvmtiEnv::GetLocalDouble(JavaThread* java_thread, jint depth, jint slot, jdouble* value_ptr) { | |
1875 // rm object is created to clean up the javaVFrame created in | |
1876 // doit_prologue(), but after doit() is finished with it. | |
1877 ResourceMark rm; | |
1878 | |
1879 VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE); | |
1880 VMThread::execute(&op); | |
1881 *value_ptr = op.value().d; | |
1882 return op.result(); | |
1883 } /* end GetLocalDouble */ | |
1884 | |
1885 | |
1886 // Threads_lock NOT held, java_thread not protected by lock | |
1887 // java_thread - pre-checked | |
1888 // java_thread - unchecked | |
1889 // depth - pre-checked as non-negative | |
1890 jvmtiError | |
1891 JvmtiEnv::SetLocalObject(JavaThread* java_thread, jint depth, jint slot, jobject value) { | |
1892 // rm object is created to clean up the javaVFrame created in | |
1893 // doit_prologue(), but after doit() is finished with it. | |
1894 ResourceMark rm; | |
1895 jvalue val; | |
1896 val.l = value; | |
1897 VM_GetOrSetLocal op(java_thread, depth, slot, T_OBJECT, val); | |
1898 VMThread::execute(&op); | |
1899 return op.result(); | |
1900 } /* end SetLocalObject */ | |
1901 | |
1902 | |
1903 // Threads_lock NOT held, java_thread not protected by lock | |
1904 // java_thread - pre-checked | |
1905 // java_thread - unchecked | |
1906 // depth - pre-checked as non-negative | |
1907 jvmtiError | |
1908 JvmtiEnv::SetLocalInt(JavaThread* java_thread, jint depth, jint slot, jint value) { | |
1909 // rm object is created to clean up the javaVFrame created in | |
1910 // doit_prologue(), but after doit() is finished with it. | |
1911 ResourceMark rm; | |
1912 jvalue val; | |
1913 val.i = value; | |
1914 VM_GetOrSetLocal op(java_thread, depth, slot, T_INT, val); | |
1915 VMThread::execute(&op); | |
1916 return op.result(); | |
1917 } /* end SetLocalInt */ | |
1918 | |
1919 | |
1920 // Threads_lock NOT held, java_thread not protected by lock | |
1921 // java_thread - pre-checked | |
1922 // java_thread - unchecked | |
1923 // depth - pre-checked as non-negative | |
1924 jvmtiError | |
1925 JvmtiEnv::SetLocalLong(JavaThread* java_thread, jint depth, jint slot, jlong value) { | |
1926 // rm object is created to clean up the javaVFrame created in | |
1927 // doit_prologue(), but after doit() is finished with it. | |
1928 ResourceMark rm; | |
1929 jvalue val; | |
1930 val.j = value; | |
1931 VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG, val); | |
1932 VMThread::execute(&op); | |
1933 return op.result(); | |
1934 } /* end SetLocalLong */ | |
1935 | |
1936 | |
1937 // Threads_lock NOT held, java_thread not protected by lock | |
1938 // java_thread - pre-checked | |
1939 // java_thread - unchecked | |
1940 // depth - pre-checked as non-negative | |
1941 jvmtiError | |
1942 JvmtiEnv::SetLocalFloat(JavaThread* java_thread, jint depth, jint slot, jfloat value) { | |
1943 // rm object is created to clean up the javaVFrame created in | |
1944 // doit_prologue(), but after doit() is finished with it. | |
1945 ResourceMark rm; | |
1946 jvalue val; | |
1947 val.f = value; | |
1948 VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT, val); | |
1949 VMThread::execute(&op); | |
1950 return op.result(); | |
1951 } /* end SetLocalFloat */ | |
1952 | |
1953 | |
1954 // Threads_lock NOT held, java_thread not protected by lock | |
1955 // java_thread - pre-checked | |
1956 // java_thread - unchecked | |
1957 // depth - pre-checked as non-negative | |
1958 jvmtiError | |
1959 JvmtiEnv::SetLocalDouble(JavaThread* java_thread, jint depth, jint slot, jdouble value) { | |
1960 // rm object is created to clean up the javaVFrame created in | |
1961 // doit_prologue(), but after doit() is finished with it. | |
1962 ResourceMark rm; | |
1963 jvalue val; | |
1964 val.d = value; | |
1965 VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE, val); | |
1966 VMThread::execute(&op); | |
1967 return op.result(); | |
1968 } /* end SetLocalDouble */ | |
1969 | |
1970 | |
1971 // | |
1972 // Breakpoint functions | |
1973 // | |
1974 | |
1975 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
1976 jvmtiError | |
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1977 JvmtiEnv::SetBreakpoint(Method* method_oop, jlocation location) { |
0 | 1978 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
1979 if (location < 0) { // simple invalid location check first | |
1980 return JVMTI_ERROR_INVALID_LOCATION; | |
1981 } | |
1982 // verify that the breakpoint is not past the end of the method | |
1983 if (location >= (jlocation) method_oop->code_size()) { | |
1984 return JVMTI_ERROR_INVALID_LOCATION; | |
1985 } | |
1986 | |
1987 ResourceMark rm; | |
1988 JvmtiBreakpoint bp(method_oop, location); | |
1989 JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints(); | |
1990 if (jvmti_breakpoints.set(bp) == JVMTI_ERROR_DUPLICATE) | |
1991 return JVMTI_ERROR_DUPLICATE; | |
1992 | |
1993 if (TraceJVMTICalls) { | |
1994 jvmti_breakpoints.print(); | |
1995 } | |
1996 | |
1997 return JVMTI_ERROR_NONE; | |
1998 } /* end SetBreakpoint */ | |
1999 | |
2000 | |
2001 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2002 jvmtiError | |
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2003 JvmtiEnv::ClearBreakpoint(Method* method_oop, jlocation location) { |
0 | 2004 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
2005 | |
2006 if (location < 0) { // simple invalid location check first | |
2007 return JVMTI_ERROR_INVALID_LOCATION; | |
2008 } | |
2009 | |
2010 // verify that the breakpoint is not past the end of the method | |
2011 if (location >= (jlocation) method_oop->code_size()) { | |
2012 return JVMTI_ERROR_INVALID_LOCATION; | |
2013 } | |
2014 | |
2015 JvmtiBreakpoint bp(method_oop, location); | |
2016 | |
2017 JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints(); | |
2018 if (jvmti_breakpoints.clear(bp) == JVMTI_ERROR_NOT_FOUND) | |
2019 return JVMTI_ERROR_NOT_FOUND; | |
2020 | |
2021 if (TraceJVMTICalls) { | |
2022 jvmti_breakpoints.print(); | |
2023 } | |
2024 | |
2025 return JVMTI_ERROR_NONE; | |
2026 } /* end ClearBreakpoint */ | |
2027 | |
2028 | |
2029 // | |
2030 // Watched Field functions | |
2031 // | |
2032 | |
2033 jvmtiError | |
2034 JvmtiEnv::SetFieldAccessWatch(fieldDescriptor* fdesc_ptr) { | |
2035 // make sure we haven't set this watch before | |
2036 if (fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_DUPLICATE; | |
2037 fdesc_ptr->set_is_field_access_watched(true); | |
2038 | |
2039 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, true); | |
2040 | |
2041 return JVMTI_ERROR_NONE; | |
2042 } /* end SetFieldAccessWatch */ | |
2043 | |
2044 | |
2045 jvmtiError | |
2046 JvmtiEnv::ClearFieldAccessWatch(fieldDescriptor* fdesc_ptr) { | |
2047 // make sure we have a watch to clear | |
2048 if (!fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_NOT_FOUND; | |
2049 fdesc_ptr->set_is_field_access_watched(false); | |
2050 | |
2051 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, false); | |
2052 | |
2053 return JVMTI_ERROR_NONE; | |
2054 } /* end ClearFieldAccessWatch */ | |
2055 | |
2056 | |
2057 jvmtiError | |
2058 JvmtiEnv::SetFieldModificationWatch(fieldDescriptor* fdesc_ptr) { | |
2059 // make sure we haven't set this watch before | |
2060 if (fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_DUPLICATE; | |
2061 fdesc_ptr->set_is_field_modification_watched(true); | |
2062 | |
2063 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, true); | |
2064 | |
2065 return JVMTI_ERROR_NONE; | |
2066 } /* end SetFieldModificationWatch */ | |
2067 | |
2068 | |
2069 jvmtiError | |
2070 JvmtiEnv::ClearFieldModificationWatch(fieldDescriptor* fdesc_ptr) { | |
2071 // make sure we have a watch to clear | |
2072 if (!fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_NOT_FOUND; | |
2073 fdesc_ptr->set_is_field_modification_watched(false); | |
2074 | |
2075 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, false); | |
2076 | |
2077 return JVMTI_ERROR_NONE; | |
2078 } /* end ClearFieldModificationWatch */ | |
2079 | |
2080 // | |
2081 // Class functions | |
2082 // | |
2083 | |
2084 | |
2085 // k_mirror - may be primitive, this must be checked | |
2086 // signature_ptr - NULL is a valid value, must be checked | |
2087 // generic_ptr - NULL is a valid value, must be checked | |
2088 jvmtiError | |
2089 JvmtiEnv::GetClassSignature(oop k_mirror, char** signature_ptr, char** generic_ptr) { | |
2090 ResourceMark rm; | |
2091 bool isPrimitive = java_lang_Class::is_primitive(k_mirror); | |
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2092 Klass* k = NULL; |
0 | 2093 if (!isPrimitive) { |
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2094 k = java_lang_Class::as_Klass(k_mirror); |
0 | 2095 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
2096 } | |
2097 if (signature_ptr != NULL) { | |
2098 char* result = NULL; | |
2099 if (isPrimitive) { | |
2100 char tchar = type2char(java_lang_Class::primitive_type(k_mirror)); | |
2101 result = (char*) jvmtiMalloc(2); | |
2102 result[0] = tchar; | |
2103 result[1] = '\0'; | |
2104 } else { | |
6983 | 2105 const char* class_sig = k->signature_name(); |
0 | 2106 result = (char *) jvmtiMalloc(strlen(class_sig)+1); |
2107 strcpy(result, class_sig); | |
2108 } | |
2109 *signature_ptr = result; | |
2110 } | |
2111 if (generic_ptr != NULL) { | |
2112 *generic_ptr = NULL; | |
6983 | 2113 if (!isPrimitive && k->oop_is_instance()) { |
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2114 Symbol* soo = InstanceKlass::cast(k)->generic_signature(); |
0 | 2115 if (soo != NULL) { |
2116 const char *gen_sig = soo->as_C_string(); | |
2117 if (gen_sig != NULL) { | |
2118 char* gen_result; | |
2119 jvmtiError err = allocate(strlen(gen_sig) + 1, | |
2120 (unsigned char **)&gen_result); | |
2121 if (err != JVMTI_ERROR_NONE) { | |
2122 return err; | |
2123 } | |
2124 strcpy(gen_result, gen_sig); | |
2125 *generic_ptr = gen_result; | |
2126 } | |
2127 } | |
2128 } | |
2129 } | |
2130 return JVMTI_ERROR_NONE; | |
2131 } /* end GetClassSignature */ | |
2132 | |
2133 | |
2134 // k_mirror - may be primitive, this must be checked | |
2135 // status_ptr - pre-checked for NULL | |
2136 jvmtiError | |
2137 JvmtiEnv::GetClassStatus(oop k_mirror, jint* status_ptr) { | |
2138 jint result = 0; | |
2139 if (java_lang_Class::is_primitive(k_mirror)) { | |
2140 result |= JVMTI_CLASS_STATUS_PRIMITIVE; | |
2141 } else { | |
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2142 Klass* k = java_lang_Class::as_Klass(k_mirror); |
0 | 2143 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
6983 | 2144 result = k->jvmti_class_status(); |
0 | 2145 } |
2146 *status_ptr = result; | |
2147 | |
2148 return JVMTI_ERROR_NONE; | |
2149 } /* end GetClassStatus */ | |
2150 | |
2151 | |
2152 // k_mirror - may be primitive, this must be checked | |
2153 // source_name_ptr - pre-checked for NULL | |
2154 jvmtiError | |
2155 JvmtiEnv::GetSourceFileName(oop k_mirror, char** source_name_ptr) { | |
2156 if (java_lang_Class::is_primitive(k_mirror)) { | |
2157 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2158 } | |
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2159 Klass* k_klass = java_lang_Class::as_Klass(k_mirror); |
0 | 2160 NULL_CHECK(k_klass, JVMTI_ERROR_INVALID_CLASS); |
2161 | |
6983 | 2162 if (!k_klass->oop_is_instance()) { |
0 | 2163 return JVMTI_ERROR_ABSENT_INFORMATION; |
2164 } | |
2165 | |
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2166 Symbol* sfnOop = InstanceKlass::cast(k_klass)->source_file_name(); |
0 | 2167 NULL_CHECK(sfnOop, JVMTI_ERROR_ABSENT_INFORMATION); |
2168 { | |
2169 JavaThread* current_thread = JavaThread::current(); | |
2170 ResourceMark rm(current_thread); | |
2171 const char* sfncp = (const char*) sfnOop->as_C_string(); | |
2172 *source_name_ptr = (char *) jvmtiMalloc(strlen(sfncp)+1); | |
2173 strcpy(*source_name_ptr, sfncp); | |
2174 } | |
2175 | |
2176 return JVMTI_ERROR_NONE; | |
2177 } /* end GetSourceFileName */ | |
2178 | |
2179 | |
2180 // k_mirror - may be primitive, this must be checked | |
2181 // modifiers_ptr - pre-checked for NULL | |
2182 jvmtiError | |
2183 JvmtiEnv::GetClassModifiers(oop k_mirror, jint* modifiers_ptr) { | |
2184 JavaThread* current_thread = JavaThread::current(); | |
2185 jint result = 0; | |
2186 if (!java_lang_Class::is_primitive(k_mirror)) { | |
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2187 Klass* k = java_lang_Class::as_Klass(k_mirror); |
0 | 2188 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
6983 | 2189 result = k->compute_modifier_flags(current_thread); |
0 | 2190 JavaThread* THREAD = current_thread; // pass to macros |
2191 if (HAS_PENDING_EXCEPTION) { | |
2192 CLEAR_PENDING_EXCEPTION; | |
2193 return JVMTI_ERROR_INTERNAL; | |
2194 }; | |
2195 | |
2196 // Reset the deleted ACC_SUPER bit ( deleted in compute_modifier_flags()). | |
6983 | 2197 if(k->is_super()) { |
0 | 2198 result |= JVM_ACC_SUPER; |
2199 } | |
2200 } else { | |
2201 result = (JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC); | |
2202 } | |
2203 *modifiers_ptr = result; | |
2204 | |
2205 return JVMTI_ERROR_NONE; | |
2206 } /* end GetClassModifiers */ | |
2207 | |
2208 | |
2209 // k_mirror - may be primitive, this must be checked | |
2210 // method_count_ptr - pre-checked for NULL | |
2211 // methods_ptr - pre-checked for NULL | |
2212 jvmtiError | |
2213 JvmtiEnv::GetClassMethods(oop k_mirror, jint* method_count_ptr, jmethodID** methods_ptr) { | |
2214 JavaThread* current_thread = JavaThread::current(); | |
2215 HandleMark hm(current_thread); | |
2216 | |
2217 if (java_lang_Class::is_primitive(k_mirror)) { | |
2218 *method_count_ptr = 0; | |
2219 *methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID)); | |
2220 return JVMTI_ERROR_NONE; | |
2221 } | |
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2222 Klass* k = java_lang_Class::as_Klass(k_mirror); |
0 | 2223 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
2224 | |
2225 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
6983 | 2226 if (!(k->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) { |
0 | 2227 return JVMTI_ERROR_CLASS_NOT_PREPARED; |
2228 } | |
2229 | |
6983 | 2230 if (!k->oop_is_instance()) { |
0 | 2231 *method_count_ptr = 0; |
2232 *methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID)); | |
2233 return JVMTI_ERROR_NONE; | |
2234 } | |
2235 instanceKlassHandle instanceK_h(current_thread, k); | |
2236 // Allocate the result and fill it in | |
2237 int result_length = instanceK_h->methods()->length(); | |
2238 jmethodID* result_list = (jmethodID*)jvmtiMalloc(result_length * sizeof(jmethodID)); | |
2239 int index; | |
2240 if (JvmtiExport::can_maintain_original_method_order()) { | |
2241 // Use the original method ordering indices stored in the class, so we can emit | |
2242 // jmethodIDs in the order they appeared in the class file | |
2243 for (index = 0; index < result_length; index++) { | |
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2244 Method* m = instanceK_h->methods()->at(index); |
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2245 int original_index = instanceK_h->method_ordering()->at(index); |
0 | 2246 assert(original_index >= 0 && original_index < result_length, "invalid original method index"); |
2247 jmethodID id = m->jmethod_id(); | |
2248 result_list[original_index] = id; | |
2249 } | |
2250 } else { | |
2251 // otherwise just copy in any order | |
2252 for (index = 0; index < result_length; index++) { | |
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2253 Method* m = instanceK_h->methods()->at(index); |
0 | 2254 jmethodID id = m->jmethod_id(); |
2255 result_list[index] = id; | |
2256 } | |
2257 } | |
2258 // Fill in return value. | |
2259 *method_count_ptr = result_length; | |
2260 *methods_ptr = result_list; | |
2261 | |
2262 return JVMTI_ERROR_NONE; | |
2263 } /* end GetClassMethods */ | |
2264 | |
2265 | |
2266 // k_mirror - may be primitive, this must be checked | |
2267 // field_count_ptr - pre-checked for NULL | |
2268 // fields_ptr - pre-checked for NULL | |
2269 jvmtiError | |
2270 JvmtiEnv::GetClassFields(oop k_mirror, jint* field_count_ptr, jfieldID** fields_ptr) { | |
2271 if (java_lang_Class::is_primitive(k_mirror)) { | |
2272 *field_count_ptr = 0; | |
2273 *fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID)); | |
2274 return JVMTI_ERROR_NONE; | |
2275 } | |
2276 JavaThread* current_thread = JavaThread::current(); | |
2277 HandleMark hm(current_thread); | |
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2278 Klass* k = java_lang_Class::as_Klass(k_mirror); |
0 | 2279 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
2280 | |
2281 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
6983 | 2282 if (!(k->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) { |
0 | 2283 return JVMTI_ERROR_CLASS_NOT_PREPARED; |
2284 } | |
2285 | |
6983 | 2286 if (!k->oop_is_instance()) { |
0 | 2287 *field_count_ptr = 0; |
2288 *fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID)); | |
2289 return JVMTI_ERROR_NONE; | |
2290 } | |
2291 | |
2292 | |
2293 instanceKlassHandle instanceK_h(current_thread, k); | |
2294 | |
2295 int result_count = 0; | |
2296 // First, count the fields. | |
2297 FilteredFieldStream flds(instanceK_h, true, true); | |
2298 result_count = flds.field_count(); | |
2299 | |
2300 // Allocate the result and fill it in | |
2301 jfieldID* result_list = (jfieldID*) jvmtiMalloc(result_count * sizeof(jfieldID)); | |
2302 // The JVMTI spec requires fields in the order they occur in the class file, | |
2303 // this is the reverse order of what FieldStream hands out. | |
2304 int id_index = (result_count - 1); | |
2305 | |
2306 for (FilteredFieldStream src_st(instanceK_h, true, true); !src_st.eos(); src_st.next()) { | |
2307 result_list[id_index--] = jfieldIDWorkaround::to_jfieldID( | |
2308 instanceK_h, src_st.offset(), | |
2309 src_st.access_flags().is_static()); | |
2310 } | |
2311 assert(id_index == -1, "just checking"); | |
2312 // Fill in the results | |
2313 *field_count_ptr = result_count; | |
2314 *fields_ptr = result_list; | |
2315 | |
2316 return JVMTI_ERROR_NONE; | |
2317 } /* end GetClassFields */ | |
2318 | |
2319 | |
2320 // k_mirror - may be primitive, this must be checked | |
2321 // interface_count_ptr - pre-checked for NULL | |
2322 // interfaces_ptr - pre-checked for NULL | |
2323 jvmtiError | |
2324 JvmtiEnv::GetImplementedInterfaces(oop k_mirror, jint* interface_count_ptr, jclass** interfaces_ptr) { | |
2325 { | |
2326 if (java_lang_Class::is_primitive(k_mirror)) { | |
2327 *interface_count_ptr = 0; | |
2328 *interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass)); | |
2329 return JVMTI_ERROR_NONE; | |
2330 } | |
2331 JavaThread* current_thread = JavaThread::current(); | |
2332 HandleMark hm(current_thread); | |
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2333 Klass* k = java_lang_Class::as_Klass(k_mirror); |
0 | 2334 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
2335 | |
2336 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
6983 | 2337 if (!(k->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) |
0 | 2338 return JVMTI_ERROR_CLASS_NOT_PREPARED; |
2339 | |
6983 | 2340 if (!k->oop_is_instance()) { |
0 | 2341 *interface_count_ptr = 0; |
2342 *interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass)); | |
2343 return JVMTI_ERROR_NONE; | |
2344 } | |
2345 | |
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2346 Array<Klass*>* interface_list = InstanceKlass::cast(k)->local_interfaces(); |
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2347 const int result_length = (interface_list == NULL ? 0 : interface_list->length()); |
0 | 2348 jclass* result_list = (jclass*) jvmtiMalloc(result_length * sizeof(jclass)); |
2349 for (int i_index = 0; i_index < result_length; i_index += 1) { | |
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2350 Klass* klass_at = interface_list->at(i_index); |
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|
2351 assert(klass_at->is_klass(), "interfaces must be Klass*s"); |
6983 | 2352 assert(klass_at->is_interface(), "interfaces must be interfaces"); |
2353 oop mirror_at = klass_at->java_mirror(); | |
0 | 2354 Handle handle_at = Handle(current_thread, mirror_at); |
2355 result_list[i_index] = (jclass) jni_reference(handle_at); | |
2356 } | |
2357 *interface_count_ptr = result_length; | |
2358 *interfaces_ptr = result_list; | |
2359 } | |
2360 | |
2361 return JVMTI_ERROR_NONE; | |
2362 } /* end GetImplementedInterfaces */ | |
2363 | |
2364 | |
2365 // k_mirror - may be primitive, this must be checked | |
2366 // minor_version_ptr - pre-checked for NULL | |
2367 // major_version_ptr - pre-checked for NULL | |
2368 jvmtiError | |
2369 JvmtiEnv::GetClassVersionNumbers(oop k_mirror, jint* minor_version_ptr, jint* major_version_ptr) { | |
2370 if (java_lang_Class::is_primitive(k_mirror)) { | |
2371 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2372 } | |
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2373 Klass* k_oop = java_lang_Class::as_Klass(k_mirror); |
0 | 2374 Thread *thread = Thread::current(); |
2375 HandleMark hm(thread); | |
2376 KlassHandle klass(thread, k_oop); | |
2377 | |
2378 jint status = klass->jvmti_class_status(); | |
2379 if (status & (JVMTI_CLASS_STATUS_ERROR)) { | |
2380 return JVMTI_ERROR_INVALID_CLASS; | |
2381 } | |
2382 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { | |
2383 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2384 } | |
2385 | |
2386 instanceKlassHandle ik(thread, k_oop); | |
2387 *minor_version_ptr = ik->minor_version(); | |
2388 *major_version_ptr = ik->major_version(); | |
2389 | |
2390 return JVMTI_ERROR_NONE; | |
2391 } /* end GetClassVersionNumbers */ | |
2392 | |
2393 | |
2394 // k_mirror - may be primitive, this must be checked | |
2395 // constant_pool_count_ptr - pre-checked for NULL | |
2396 // constant_pool_byte_count_ptr - pre-checked for NULL | |
2397 // constant_pool_bytes_ptr - pre-checked for NULL | |
2398 jvmtiError | |
2399 JvmtiEnv::GetConstantPool(oop k_mirror, jint* constant_pool_count_ptr, jint* constant_pool_byte_count_ptr, unsigned char** constant_pool_bytes_ptr) { | |
2400 if (java_lang_Class::is_primitive(k_mirror)) { | |
2401 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2402 } | |
2403 | |
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2404 Klass* k_oop = java_lang_Class::as_Klass(k_mirror); |
0 | 2405 Thread *thread = Thread::current(); |
2406 HandleMark hm(thread); | |
2407 ResourceMark rm(thread); | |
2408 KlassHandle klass(thread, k_oop); | |
2409 | |
2410 jint status = klass->jvmti_class_status(); | |
2411 if (status & (JVMTI_CLASS_STATUS_ERROR)) { | |
2412 return JVMTI_ERROR_INVALID_CLASS; | |
2413 } | |
2414 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { | |
2415 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2416 } | |
2417 | |
2418 instanceKlassHandle ikh(thread, k_oop); | |
2419 constantPoolHandle constants(thread, ikh->constants()); | |
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2420 MonitorLockerEx ml(constants->lock()); // lock constant pool while we query it |
0 | 2421 |
2422 JvmtiConstantPoolReconstituter reconstituter(ikh); | |
2423 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
2424 return reconstituter.get_error(); | |
2425 } | |
2426 | |
2427 unsigned char *cpool_bytes; | |
2428 int cpool_size = reconstituter.cpool_size(); | |
2429 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
2430 return reconstituter.get_error(); | |
2431 } | |
2432 jvmtiError res = allocate(cpool_size, &cpool_bytes); | |
2433 if (res != JVMTI_ERROR_NONE) { | |
2434 return res; | |
2435 } | |
2436 reconstituter.copy_cpool_bytes(cpool_bytes); | |
2437 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
2438 return reconstituter.get_error(); | |
2439 } | |
2440 | |
2441 *constant_pool_count_ptr = constants->length(); | |
2442 *constant_pool_byte_count_ptr = cpool_size; | |
2443 *constant_pool_bytes_ptr = cpool_bytes; | |
2444 | |
2445 return JVMTI_ERROR_NONE; | |
2446 } /* end GetConstantPool */ | |
2447 | |
2448 | |
2449 // k_mirror - may be primitive, this must be checked | |
2450 // is_interface_ptr - pre-checked for NULL | |
2451 jvmtiError | |
2452 JvmtiEnv::IsInterface(oop k_mirror, jboolean* is_interface_ptr) { | |
2453 { | |
2454 bool result = false; | |
2455 if (!java_lang_Class::is_primitive(k_mirror)) { | |
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2456 Klass* k = java_lang_Class::as_Klass(k_mirror); |
6983 | 2457 if (k != NULL && k->is_interface()) { |
0 | 2458 result = true; |
2459 } | |
2460 } | |
2461 *is_interface_ptr = result; | |
2462 } | |
2463 | |
2464 return JVMTI_ERROR_NONE; | |
2465 } /* end IsInterface */ | |
2466 | |
2467 | |
2468 // k_mirror - may be primitive, this must be checked | |
2469 // is_array_class_ptr - pre-checked for NULL | |
2470 jvmtiError | |
2471 JvmtiEnv::IsArrayClass(oop k_mirror, jboolean* is_array_class_ptr) { | |
2472 { | |
2473 bool result = false; | |
2474 if (!java_lang_Class::is_primitive(k_mirror)) { | |
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2475 Klass* k = java_lang_Class::as_Klass(k_mirror); |
6983 | 2476 if (k != NULL && k->oop_is_array()) { |
0 | 2477 result = true; |
2478 } | |
2479 } | |
2480 *is_array_class_ptr = result; | |
2481 } | |
2482 | |
2483 return JVMTI_ERROR_NONE; | |
2484 } /* end IsArrayClass */ | |
2485 | |
2486 | |
2487 // k_mirror - may be primitive, this must be checked | |
2488 // classloader_ptr - pre-checked for NULL | |
2489 jvmtiError | |
2490 JvmtiEnv::GetClassLoader(oop k_mirror, jobject* classloader_ptr) { | |
2491 { | |
2492 if (java_lang_Class::is_primitive(k_mirror)) { | |
2493 *classloader_ptr = (jclass) jni_reference(Handle()); | |
2494 return JVMTI_ERROR_NONE; | |
2495 } | |
2496 JavaThread* current_thread = JavaThread::current(); | |
2497 HandleMark hm(current_thread); | |
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2498 Klass* k = java_lang_Class::as_Klass(k_mirror); |
0 | 2499 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
2500 | |
6983 | 2501 oop result_oop = k->class_loader(); |
0 | 2502 if (result_oop == NULL) { |
2503 *classloader_ptr = (jclass) jni_reference(Handle()); | |
2504 return JVMTI_ERROR_NONE; | |
2505 } | |
2506 Handle result_handle = Handle(current_thread, result_oop); | |
2507 jclass result_jnihandle = (jclass) jni_reference(result_handle); | |
2508 *classloader_ptr = result_jnihandle; | |
2509 } | |
2510 return JVMTI_ERROR_NONE; | |
2511 } /* end GetClassLoader */ | |
2512 | |
2513 | |
2514 // k_mirror - may be primitive, this must be checked | |
2515 // source_debug_extension_ptr - pre-checked for NULL | |
2516 jvmtiError | |
2517 JvmtiEnv::GetSourceDebugExtension(oop k_mirror, char** source_debug_extension_ptr) { | |
2518 { | |
2519 if (java_lang_Class::is_primitive(k_mirror)) { | |
2520 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2521 } | |
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2522 Klass* k = java_lang_Class::as_Klass(k_mirror); |
0 | 2523 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
6983 | 2524 if (!k->oop_is_instance()) { |
0 | 2525 return JVMTI_ERROR_ABSENT_INFORMATION; |
2526 } | |
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2527 char* sde = InstanceKlass::cast(k)->source_debug_extension(); |
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2528 NULL_CHECK(sde, JVMTI_ERROR_ABSENT_INFORMATION); |
0 | 2529 |
2530 { | |
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2531 *source_debug_extension_ptr = (char *) jvmtiMalloc(strlen(sde)+1); |
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2532 strcpy(*source_debug_extension_ptr, sde); |
0 | 2533 } |
2534 } | |
2535 | |
2536 return JVMTI_ERROR_NONE; | |
2537 } /* end GetSourceDebugExtension */ | |
2538 | |
2539 // | |
2540 // Object functions | |
2541 // | |
2542 | |
2543 // hash_code_ptr - pre-checked for NULL | |
2544 jvmtiError | |
2545 JvmtiEnv::GetObjectHashCode(jobject object, jint* hash_code_ptr) { | |
2546 oop mirror = JNIHandles::resolve_external_guard(object); | |
2547 NULL_CHECK(mirror, JVMTI_ERROR_INVALID_OBJECT); | |
2548 NULL_CHECK(hash_code_ptr, JVMTI_ERROR_NULL_POINTER); | |
2549 | |
2550 { | |
2551 jint result = (jint) mirror->identity_hash(); | |
2552 *hash_code_ptr = result; | |
2553 } | |
2554 return JVMTI_ERROR_NONE; | |
2555 } /* end GetObjectHashCode */ | |
2556 | |
2557 | |
2558 // info_ptr - pre-checked for NULL | |
2559 jvmtiError | |
2560 JvmtiEnv::GetObjectMonitorUsage(jobject object, jvmtiMonitorUsage* info_ptr) { | |
2561 JavaThread* calling_thread = JavaThread::current(); | |
2562 jvmtiError err = get_object_monitor_usage(calling_thread, object, info_ptr); | |
2563 if (err == JVMTI_ERROR_THREAD_NOT_SUSPENDED) { | |
2564 // Some of the critical threads were not suspended. go to a safepoint and try again | |
2565 VM_GetObjectMonitorUsage op(this, calling_thread, object, info_ptr); | |
2566 VMThread::execute(&op); | |
2567 err = op.result(); | |
2568 } | |
2569 return err; | |
2570 } /* end GetObjectMonitorUsage */ | |
2571 | |
2572 | |
2573 // | |
2574 // Field functions | |
2575 // | |
2576 | |
2577 // name_ptr - NULL is a valid value, must be checked | |
2578 // signature_ptr - NULL is a valid value, must be checked | |
2579 // generic_ptr - NULL is a valid value, must be checked | |
2580 jvmtiError | |
2581 JvmtiEnv::GetFieldName(fieldDescriptor* fdesc_ptr, char** name_ptr, char** signature_ptr, char** generic_ptr) { | |
2582 JavaThread* current_thread = JavaThread::current(); | |
2583 ResourceMark rm(current_thread); | |
2584 if (name_ptr == NULL) { | |
2585 // just don't return the name | |
2586 } else { | |
2587 const char* fieldName = fdesc_ptr->name()->as_C_string(); | |
2588 *name_ptr = (char*) jvmtiMalloc(strlen(fieldName) + 1); | |
2589 if (*name_ptr == NULL) | |
2590 return JVMTI_ERROR_OUT_OF_MEMORY; | |
2591 strcpy(*name_ptr, fieldName); | |
2592 } | |
2593 if (signature_ptr== NULL) { | |
2594 // just don't return the signature | |
2595 } else { | |
2596 const char* fieldSignature = fdesc_ptr->signature()->as_C_string(); | |
2597 *signature_ptr = (char*) jvmtiMalloc(strlen(fieldSignature) + 1); | |
2598 if (*signature_ptr == NULL) | |
2599 return JVMTI_ERROR_OUT_OF_MEMORY; | |
2600 strcpy(*signature_ptr, fieldSignature); | |
2601 } | |
2602 if (generic_ptr != NULL) { | |
2603 *generic_ptr = NULL; | |
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2604 Symbol* soop = fdesc_ptr->generic_signature(); |
0 | 2605 if (soop != NULL) { |
2606 const char* gen_sig = soop->as_C_string(); | |
2607 if (gen_sig != NULL) { | |
2608 jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr); | |
2609 if (err != JVMTI_ERROR_NONE) { | |
2610 return err; | |
2611 } | |
2612 strcpy(*generic_ptr, gen_sig); | |
2613 } | |
2614 } | |
2615 } | |
2616 return JVMTI_ERROR_NONE; | |
2617 } /* end GetFieldName */ | |
2618 | |
2619 | |
2620 // declaring_class_ptr - pre-checked for NULL | |
2621 jvmtiError | |
2622 JvmtiEnv::GetFieldDeclaringClass(fieldDescriptor* fdesc_ptr, jclass* declaring_class_ptr) { | |
2623 | |
2624 *declaring_class_ptr = get_jni_class_non_null(fdesc_ptr->field_holder()); | |
2625 return JVMTI_ERROR_NONE; | |
2626 } /* end GetFieldDeclaringClass */ | |
2627 | |
2628 | |
2629 // modifiers_ptr - pre-checked for NULL | |
2630 jvmtiError | |
2631 JvmtiEnv::GetFieldModifiers(fieldDescriptor* fdesc_ptr, jint* modifiers_ptr) { | |
2632 | |
2633 AccessFlags resultFlags = fdesc_ptr->access_flags(); | |
2634 jint result = resultFlags.as_int(); | |
2635 *modifiers_ptr = result; | |
2636 | |
2637 return JVMTI_ERROR_NONE; | |
2638 } /* end GetFieldModifiers */ | |
2639 | |
2640 | |
2641 // is_synthetic_ptr - pre-checked for NULL | |
2642 jvmtiError | |
2643 JvmtiEnv::IsFieldSynthetic(fieldDescriptor* fdesc_ptr, jboolean* is_synthetic_ptr) { | |
2644 *is_synthetic_ptr = fdesc_ptr->is_synthetic(); | |
2645 return JVMTI_ERROR_NONE; | |
2646 } /* end IsFieldSynthetic */ | |
2647 | |
2648 | |
2649 // | |
2650 // Method functions | |
2651 // | |
2652 | |
2653 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2654 // name_ptr - NULL is a valid value, must be checked | |
2655 // signature_ptr - NULL is a valid value, must be checked | |
2656 // generic_ptr - NULL is a valid value, must be checked | |
2657 jvmtiError | |
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2658 JvmtiEnv::GetMethodName(Method* method_oop, char** name_ptr, char** signature_ptr, char** generic_ptr) { |
0 | 2659 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
2660 JavaThread* current_thread = JavaThread::current(); | |
2661 | |
2662 ResourceMark rm(current_thread); // get the utf8 name and signature | |
2663 if (name_ptr == NULL) { | |
2664 // just don't return the name | |
2665 } else { | |
2666 const char* utf8_name = (const char *) method_oop->name()->as_utf8(); | |
2667 *name_ptr = (char *) jvmtiMalloc(strlen(utf8_name)+1); | |
2668 strcpy(*name_ptr, utf8_name); | |
2669 } | |
2670 if (signature_ptr == NULL) { | |
2671 // just don't return the signature | |
2672 } else { | |
2673 const char* utf8_signature = (const char *) method_oop->signature()->as_utf8(); | |
2674 *signature_ptr = (char *) jvmtiMalloc(strlen(utf8_signature) + 1); | |
2675 strcpy(*signature_ptr, utf8_signature); | |
2676 } | |
2677 | |
2678 if (generic_ptr != NULL) { | |
2679 *generic_ptr = NULL; | |
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2680 Symbol* soop = method_oop->generic_signature(); |
0 | 2681 if (soop != NULL) { |
2682 const char* gen_sig = soop->as_C_string(); | |
2683 if (gen_sig != NULL) { | |
2684 jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr); | |
2685 if (err != JVMTI_ERROR_NONE) { | |
2686 return err; | |
2687 } | |
2688 strcpy(*generic_ptr, gen_sig); | |
2689 } | |
2690 } | |
2691 } | |
2692 return JVMTI_ERROR_NONE; | |
2693 } /* end GetMethodName */ | |
2694 | |
2695 | |
2696 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2697 // declaring_class_ptr - pre-checked for NULL | |
2698 jvmtiError | |
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2699 JvmtiEnv::GetMethodDeclaringClass(Method* method_oop, jclass* declaring_class_ptr) { |
0 | 2700 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
2701 (*declaring_class_ptr) = get_jni_class_non_null(method_oop->method_holder()); | |
2702 return JVMTI_ERROR_NONE; | |
2703 } /* end GetMethodDeclaringClass */ | |
2704 | |
2705 | |
2706 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2707 // modifiers_ptr - pre-checked for NULL | |
2708 jvmtiError | |
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2709 JvmtiEnv::GetMethodModifiers(Method* method_oop, jint* modifiers_ptr) { |
0 | 2710 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
2711 (*modifiers_ptr) = method_oop->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
2712 return JVMTI_ERROR_NONE; | |
2713 } /* end GetMethodModifiers */ | |
2714 | |
2715 | |
2716 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2717 // max_ptr - pre-checked for NULL | |
2718 jvmtiError | |
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2719 JvmtiEnv::GetMaxLocals(Method* method_oop, jint* max_ptr) { |
0 | 2720 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
2721 // get max stack | |
2722 (*max_ptr) = method_oop->max_locals(); | |
2723 return JVMTI_ERROR_NONE; | |
2724 } /* end GetMaxLocals */ | |
2725 | |
2726 | |
2727 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2728 // size_ptr - pre-checked for NULL | |
2729 jvmtiError | |
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2730 JvmtiEnv::GetArgumentsSize(Method* method_oop, jint* size_ptr) { |
0 | 2731 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
2732 // get size of arguments | |
2733 | |
2734 (*size_ptr) = method_oop->size_of_parameters(); | |
2735 return JVMTI_ERROR_NONE; | |
2736 } /* end GetArgumentsSize */ | |
2737 | |
2738 | |
2739 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2740 // entry_count_ptr - pre-checked for NULL | |
2741 // table_ptr - pre-checked for NULL | |
2742 jvmtiError | |
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2743 JvmtiEnv::GetLineNumberTable(Method* method_oop, jint* entry_count_ptr, jvmtiLineNumberEntry** table_ptr) { |
0 | 2744 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
2745 if (!method_oop->has_linenumber_table()) { | |
2746 return (JVMTI_ERROR_ABSENT_INFORMATION); | |
2747 } | |
2748 | |
2749 // The line number table is compressed so we don't know how big it is until decompressed. | |
2750 // Decompression is really fast so we just do it twice. | |
2751 | |
2752 // Compute size of table | |
2753 jint num_entries = 0; | |
2754 CompressedLineNumberReadStream stream(method_oop->compressed_linenumber_table()); | |
2755 while (stream.read_pair()) { | |
2756 num_entries++; | |
2757 } | |
2758 jvmtiLineNumberEntry *jvmti_table = | |
2759 (jvmtiLineNumberEntry *)jvmtiMalloc(num_entries * (sizeof(jvmtiLineNumberEntry))); | |
2760 | |
2761 // Fill jvmti table | |
2762 if (num_entries > 0) { | |
2763 int index = 0; | |
2764 CompressedLineNumberReadStream stream(method_oop->compressed_linenumber_table()); | |
2765 while (stream.read_pair()) { | |
2766 jvmti_table[index].start_location = (jlocation) stream.bci(); | |
2767 jvmti_table[index].line_number = (jint) stream.line(); | |
2768 index++; | |
2769 } | |
2770 assert(index == num_entries, "sanity check"); | |
2771 } | |
2772 | |
2773 // Set up results | |
2774 (*entry_count_ptr) = num_entries; | |
2775 (*table_ptr) = jvmti_table; | |
2776 | |
2777 return JVMTI_ERROR_NONE; | |
2778 } /* end GetLineNumberTable */ | |
2779 | |
2780 | |
2781 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2782 // start_location_ptr - pre-checked for NULL | |
2783 // end_location_ptr - pre-checked for NULL | |
2784 jvmtiError | |
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2785 JvmtiEnv::GetMethodLocation(Method* method_oop, jlocation* start_location_ptr, jlocation* end_location_ptr) { |
0 | 2786 |
2787 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2788 // get start and end location | |
2789 (*end_location_ptr) = (jlocation) (method_oop->code_size() - 1); | |
2790 if (method_oop->code_size() == 0) { | |
2791 // there is no code so there is no start location | |
2792 (*start_location_ptr) = (jlocation)(-1); | |
2793 } else { | |
2794 (*start_location_ptr) = (jlocation)(0); | |
2795 } | |
2796 | |
2797 return JVMTI_ERROR_NONE; | |
2798 } /* end GetMethodLocation */ | |
2799 | |
2800 | |
2801 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2802 // entry_count_ptr - pre-checked for NULL | |
2803 // table_ptr - pre-checked for NULL | |
2804 jvmtiError | |
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2805 JvmtiEnv::GetLocalVariableTable(Method* method_oop, jint* entry_count_ptr, jvmtiLocalVariableEntry** table_ptr) { |
0 | 2806 |
2807 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2808 JavaThread* current_thread = JavaThread::current(); | |
2809 | |
2810 // does the klass have any local variable information? | |
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2811 InstanceKlass* ik = method_oop->method_holder(); |
0 | 2812 if (!ik->access_flags().has_localvariable_table()) { |
2813 return (JVMTI_ERROR_ABSENT_INFORMATION); | |
2814 } | |
2815 | |
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2816 ConstantPool* constants = method_oop->constants(); |
0 | 2817 NULL_CHECK(constants, JVMTI_ERROR_ABSENT_INFORMATION); |
2818 | |
2819 // in the vm localvariable table representation, 6 consecutive elements in the table | |
2820 // represent a 6-tuple of shorts | |
2821 // [start_pc, length, name_index, descriptor_index, signature_index, index] | |
2822 jint num_entries = method_oop->localvariable_table_length(); | |
2823 jvmtiLocalVariableEntry *jvmti_table = (jvmtiLocalVariableEntry *) | |
2824 jvmtiMalloc(num_entries * (sizeof(jvmtiLocalVariableEntry))); | |
2825 | |
2826 if (num_entries > 0) { | |
2827 LocalVariableTableElement* table = method_oop->localvariable_table_start(); | |
2828 for (int i = 0; i < num_entries; i++) { | |
2829 // get the 5 tuple information from the vm table | |
2830 jlocation start_location = (jlocation) table[i].start_bci; | |
2831 jint length = (jint) table[i].length; | |
2832 int name_index = (int) table[i].name_cp_index; | |
2833 int signature_index = (int) table[i].descriptor_cp_index; | |
2834 int generic_signature_index = (int) table[i].signature_cp_index; | |
2835 jint slot = (jint) table[i].slot; | |
2836 | |
2837 // get utf8 name and signature | |
2838 char *name_buf = NULL; | |
2839 char *sig_buf = NULL; | |
2840 char *gen_sig_buf = NULL; | |
2841 { | |
2842 ResourceMark rm(current_thread); | |
2843 | |
2844 const char *utf8_name = (const char *) constants->symbol_at(name_index)->as_utf8(); | |
2845 name_buf = (char *) jvmtiMalloc(strlen(utf8_name)+1); | |
2846 strcpy(name_buf, utf8_name); | |
2847 | |
2848 const char *utf8_signature = (const char *) constants->symbol_at(signature_index)->as_utf8(); | |
2849 sig_buf = (char *) jvmtiMalloc(strlen(utf8_signature)+1); | |
2850 strcpy(sig_buf, utf8_signature); | |
2851 | |
2852 if (generic_signature_index > 0) { | |
2853 const char *utf8_gen_sign = (const char *) | |
2854 constants->symbol_at(generic_signature_index)->as_utf8(); | |
2855 gen_sig_buf = (char *) jvmtiMalloc(strlen(utf8_gen_sign)+1); | |
2856 strcpy(gen_sig_buf, utf8_gen_sign); | |
2857 } | |
2858 } | |
2859 | |
2860 // fill in the jvmti local variable table | |
2861 jvmti_table[i].start_location = start_location; | |
2862 jvmti_table[i].length = length; | |
2863 jvmti_table[i].name = name_buf; | |
2864 jvmti_table[i].signature = sig_buf; | |
2865 jvmti_table[i].generic_signature = gen_sig_buf; | |
2866 jvmti_table[i].slot = slot; | |
2867 } | |
2868 } | |
2869 | |
2870 // set results | |
2871 (*entry_count_ptr) = num_entries; | |
2872 (*table_ptr) = jvmti_table; | |
2873 | |
2874 return JVMTI_ERROR_NONE; | |
2875 } /* end GetLocalVariableTable */ | |
2876 | |
2877 | |
2878 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2879 // bytecode_count_ptr - pre-checked for NULL | |
2880 // bytecodes_ptr - pre-checked for NULL | |
2881 jvmtiError | |
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2882 JvmtiEnv::GetBytecodes(Method* method_oop, jint* bytecode_count_ptr, unsigned char** bytecodes_ptr) { |
0 | 2883 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
2884 | |
2885 HandleMark hm; | |
2886 methodHandle method(method_oop); | |
2887 jint size = (jint)method->code_size(); | |
2888 jvmtiError err = allocate(size, bytecodes_ptr); | |
2889 if (err != JVMTI_ERROR_NONE) { | |
2890 return err; | |
2891 } | |
2892 | |
2893 (*bytecode_count_ptr) = size; | |
2894 // get byte codes | |
2895 JvmtiClassFileReconstituter::copy_bytecodes(method, *bytecodes_ptr); | |
2896 | |
2897 return JVMTI_ERROR_NONE; | |
2898 } /* end GetBytecodes */ | |
2899 | |
2900 | |
2901 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2902 // is_native_ptr - pre-checked for NULL | |
2903 jvmtiError | |
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2904 JvmtiEnv::IsMethodNative(Method* method_oop, jboolean* is_native_ptr) { |
0 | 2905 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
2906 (*is_native_ptr) = method_oop->is_native(); | |
2907 return JVMTI_ERROR_NONE; | |
2908 } /* end IsMethodNative */ | |
2909 | |
2910 | |
2911 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2912 // is_synthetic_ptr - pre-checked for NULL | |
2913 jvmtiError | |
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2914 JvmtiEnv::IsMethodSynthetic(Method* method_oop, jboolean* is_synthetic_ptr) { |
0 | 2915 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
2916 (*is_synthetic_ptr) = method_oop->is_synthetic(); | |
2917 return JVMTI_ERROR_NONE; | |
2918 } /* end IsMethodSynthetic */ | |
2919 | |
2920 | |
2921 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2922 // is_obsolete_ptr - pre-checked for NULL | |
2923 jvmtiError | |
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2924 JvmtiEnv::IsMethodObsolete(Method* method_oop, jboolean* is_obsolete_ptr) { |
1121 | 2925 if (use_version_1_0_semantics() && |
2926 get_capabilities()->can_redefine_classes == 0) { | |
2927 // This JvmtiEnv requested version 1.0 semantics and this function | |
2928 // requires the can_redefine_classes capability in version 1.0 so | |
2929 // we need to return an error here. | |
2930 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; | |
2931 } | |
2932 | |
0 | 2933 if (method_oop == NULL || method_oop->is_obsolete()) { |
2934 *is_obsolete_ptr = true; | |
2935 } else { | |
2936 *is_obsolete_ptr = false; | |
2937 } | |
2938 return JVMTI_ERROR_NONE; | |
2939 } /* end IsMethodObsolete */ | |
2940 | |
2941 // | |
2942 // Raw Monitor functions | |
2943 // | |
2944 | |
2945 // name - pre-checked for NULL | |
2946 // monitor_ptr - pre-checked for NULL | |
2947 jvmtiError | |
2948 JvmtiEnv::CreateRawMonitor(const char* name, jrawMonitorID* monitor_ptr) { | |
2949 JvmtiRawMonitor* rmonitor = new JvmtiRawMonitor(name); | |
2950 NULL_CHECK(rmonitor, JVMTI_ERROR_OUT_OF_MEMORY); | |
2951 | |
2952 *monitor_ptr = (jrawMonitorID)rmonitor; | |
2953 | |
2954 return JVMTI_ERROR_NONE; | |
2955 } /* end CreateRawMonitor */ | |
2956 | |
2957 | |
2958 // rmonitor - pre-checked for validity | |
2959 jvmtiError | |
2960 JvmtiEnv::DestroyRawMonitor(JvmtiRawMonitor * rmonitor) { | |
2961 if (Threads::number_of_threads() == 0) { | |
2962 // Remove this monitor from pending raw monitors list | |
2963 // if it has entered in onload or start phase. | |
2964 JvmtiPendingMonitors::destroy(rmonitor); | |
2965 } else { | |
2966 Thread* thread = Thread::current(); | |
2967 if (rmonitor->is_entered(thread)) { | |
2968 // The caller owns this monitor which we are about to destroy. | |
2969 // We exit the underlying synchronization object so that the | |
2970 // "delete monitor" call below can work without an assertion | |
2971 // failure on systems that don't like destroying synchronization | |
2972 // objects that are locked. | |
2973 int r; | |
2974 intptr_t recursion = rmonitor->recursions(); | |
2975 for (intptr_t i=0; i <= recursion; i++) { | |
2976 r = rmonitor->raw_exit(thread); | |
2977 assert(r == ObjectMonitor::OM_OK, "raw_exit should have worked"); | |
2978 if (r != ObjectMonitor::OM_OK) { // robustness | |
2979 return JVMTI_ERROR_INTERNAL; | |
2980 } | |
2981 } | |
2982 } | |
2983 if (rmonitor->owner() != NULL) { | |
2984 // The caller is trying to destroy a monitor that is locked by | |
2985 // someone else. While this is not forbidden by the JVMTI | |
2986 // spec, it will cause an assertion failure on systems that don't | |
2987 // like destroying synchronization objects that are locked. | |
2988 // We indicate a problem with the error return (and leak the | |
2989 // monitor's memory). | |
2990 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
2991 } | |
2992 } | |
2993 | |
2994 delete rmonitor; | |
2995 | |
2996 return JVMTI_ERROR_NONE; | |
2997 } /* end DestroyRawMonitor */ | |
2998 | |
2999 | |
3000 // rmonitor - pre-checked for validity | |
3001 jvmtiError | |
3002 JvmtiEnv::RawMonitorEnter(JvmtiRawMonitor * rmonitor) { | |
3003 if (Threads::number_of_threads() == 0) { | |
3004 // No JavaThreads exist so ObjectMonitor enter cannot be | |
3005 // used, add this raw monitor to the pending list. | |
3006 // The pending monitors will be actually entered when | |
3007 // the VM is setup. | |
3008 // See transition_pending_raw_monitors in create_vm() | |
3009 // in thread.cpp. | |
3010 JvmtiPendingMonitors::enter(rmonitor); | |
3011 } else { | |
3012 int r; | |
3013 Thread* thread = Thread::current(); | |
3014 | |
3015 if (thread->is_Java_thread()) { | |
3016 JavaThread* current_thread = (JavaThread*)thread; | |
3017 | |
3018 #ifdef PROPER_TRANSITIONS | |
3019 // Not really unknown but ThreadInVMfromNative does more than we want | |
3020 ThreadInVMfromUnknown __tiv; | |
3021 { | |
3022 ThreadBlockInVM __tbivm(current_thread); | |
3023 r = rmonitor->raw_enter(current_thread); | |
3024 } | |
3025 #else | |
3026 /* Transition to thread_blocked without entering vm state */ | |
3027 /* This is really evil. Normally you can't undo _thread_blocked */ | |
3028 /* transitions like this because it would cause us to miss a */ | |
3029 /* safepoint but since the thread was already in _thread_in_native */ | |
3030 /* the thread is not leaving a safepoint safe state and it will */ | |
3031 /* block when it tries to return from native. We can't safepoint */ | |
3032 /* block in here because we could deadlock the vmthread. Blech. */ | |
3033 | |
3034 JavaThreadState state = current_thread->thread_state(); | |
3035 assert(state == _thread_in_native, "Must be _thread_in_native"); | |
3036 // frame should already be walkable since we are in native | |
3037 assert(!current_thread->has_last_Java_frame() || | |
3038 current_thread->frame_anchor()->walkable(), "Must be walkable"); | |
3039 current_thread->set_thread_state(_thread_blocked); | |
3040 | |
3041 r = rmonitor->raw_enter(current_thread); | |
3042 // restore state, still at a safepoint safe state | |
3043 current_thread->set_thread_state(state); | |
3044 | |
3045 #endif /* PROPER_TRANSITIONS */ | |
3046 assert(r == ObjectMonitor::OM_OK, "raw_enter should have worked"); | |
3047 } else { | |
3048 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
3049 r = rmonitor->raw_enter(thread); | |
3050 } else { | |
3051 ShouldNotReachHere(); | |
3052 } | |
3053 } | |
3054 | |
3055 if (r != ObjectMonitor::OM_OK) { // robustness | |
3056 return JVMTI_ERROR_INTERNAL; | |
3057 } | |
3058 } | |
3059 return JVMTI_ERROR_NONE; | |
3060 } /* end RawMonitorEnter */ | |
3061 | |
3062 | |
3063 // rmonitor - pre-checked for validity | |
3064 jvmtiError | |
3065 JvmtiEnv::RawMonitorExit(JvmtiRawMonitor * rmonitor) { | |
3066 jvmtiError err = JVMTI_ERROR_NONE; | |
3067 | |
3068 if (Threads::number_of_threads() == 0) { | |
3069 // No JavaThreads exist so just remove this monitor from the pending list. | |
3070 // Bool value from exit is false if rmonitor is not in the list. | |
3071 if (!JvmtiPendingMonitors::exit(rmonitor)) { | |
3072 err = JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3073 } | |
3074 } else { | |
3075 int r; | |
3076 Thread* thread = Thread::current(); | |
3077 | |
3078 if (thread->is_Java_thread()) { | |
3079 JavaThread* current_thread = (JavaThread*)thread; | |
3080 #ifdef PROPER_TRANSITIONS | |
3081 // Not really unknown but ThreadInVMfromNative does more than we want | |
3082 ThreadInVMfromUnknown __tiv; | |
3083 #endif /* PROPER_TRANSITIONS */ | |
3084 r = rmonitor->raw_exit(current_thread); | |
3085 } else { | |
3086 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
3087 r = rmonitor->raw_exit(thread); | |
3088 } else { | |
3089 ShouldNotReachHere(); | |
3090 } | |
3091 } | |
3092 | |
3093 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
3094 err = JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3095 } else { | |
3096 assert(r == ObjectMonitor::OM_OK, "raw_exit should have worked"); | |
3097 if (r != ObjectMonitor::OM_OK) { // robustness | |
3098 err = JVMTI_ERROR_INTERNAL; | |
3099 } | |
3100 } | |
3101 } | |
3102 return err; | |
3103 } /* end RawMonitorExit */ | |
3104 | |
3105 | |
3106 // rmonitor - pre-checked for validity | |
3107 jvmtiError | |
3108 JvmtiEnv::RawMonitorWait(JvmtiRawMonitor * rmonitor, jlong millis) { | |
3109 int r; | |
3110 Thread* thread = Thread::current(); | |
3111 | |
3112 if (thread->is_Java_thread()) { | |
3113 JavaThread* current_thread = (JavaThread*)thread; | |
3114 #ifdef PROPER_TRANSITIONS | |
3115 // Not really unknown but ThreadInVMfromNative does more than we want | |
3116 ThreadInVMfromUnknown __tiv; | |
3117 { | |
3118 ThreadBlockInVM __tbivm(current_thread); | |
3119 r = rmonitor->raw_wait(millis, true, current_thread); | |
3120 } | |
3121 #else | |
3122 /* Transition to thread_blocked without entering vm state */ | |
3123 /* This is really evil. Normally you can't undo _thread_blocked */ | |
3124 /* transitions like this because it would cause us to miss a */ | |
3125 /* safepoint but since the thread was already in _thread_in_native */ | |
3126 /* the thread is not leaving a safepoint safe state and it will */ | |
3127 /* block when it tries to return from native. We can't safepoint */ | |
3128 /* block in here because we could deadlock the vmthread. Blech. */ | |
3129 | |
3130 JavaThreadState state = current_thread->thread_state(); | |
3131 assert(state == _thread_in_native, "Must be _thread_in_native"); | |
3132 // frame should already be walkable since we are in native | |
3133 assert(!current_thread->has_last_Java_frame() || | |
3134 current_thread->frame_anchor()->walkable(), "Must be walkable"); | |
3135 current_thread->set_thread_state(_thread_blocked); | |
3136 | |
3137 r = rmonitor->raw_wait(millis, true, current_thread); | |
3138 // restore state, still at a safepoint safe state | |
3139 current_thread->set_thread_state(state); | |
3140 | |
3141 #endif /* PROPER_TRANSITIONS */ | |
3142 } else { | |
3143 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
3144 r = rmonitor->raw_wait(millis, true, thread); | |
3145 } else { | |
3146 ShouldNotReachHere(); | |
3147 } | |
3148 } | |
3149 | |
3150 switch (r) { | |
3151 case ObjectMonitor::OM_INTERRUPTED: | |
3152 return JVMTI_ERROR_INTERRUPT; | |
3153 case ObjectMonitor::OM_ILLEGAL_MONITOR_STATE: | |
3154 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3155 } | |
3156 assert(r == ObjectMonitor::OM_OK, "raw_wait should have worked"); | |
3157 if (r != ObjectMonitor::OM_OK) { // robustness | |
3158 return JVMTI_ERROR_INTERNAL; | |
3159 } | |
3160 | |
3161 return JVMTI_ERROR_NONE; | |
3162 } /* end RawMonitorWait */ | |
3163 | |
3164 | |
3165 // rmonitor - pre-checked for validity | |
3166 jvmtiError | |
3167 JvmtiEnv::RawMonitorNotify(JvmtiRawMonitor * rmonitor) { | |
3168 int r; | |
3169 Thread* thread = Thread::current(); | |
3170 | |
3171 if (thread->is_Java_thread()) { | |
3172 JavaThread* current_thread = (JavaThread*)thread; | |
3173 // Not really unknown but ThreadInVMfromNative does more than we want | |
3174 ThreadInVMfromUnknown __tiv; | |
3175 r = rmonitor->raw_notify(current_thread); | |
3176 } else { | |
3177 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
3178 r = rmonitor->raw_notify(thread); | |
3179 } else { | |
3180 ShouldNotReachHere(); | |
3181 } | |
3182 } | |
3183 | |
3184 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
3185 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3186 } | |
3187 assert(r == ObjectMonitor::OM_OK, "raw_notify should have worked"); | |
3188 if (r != ObjectMonitor::OM_OK) { // robustness | |
3189 return JVMTI_ERROR_INTERNAL; | |
3190 } | |
3191 | |
3192 return JVMTI_ERROR_NONE; | |
3193 } /* end RawMonitorNotify */ | |
3194 | |
3195 | |
3196 // rmonitor - pre-checked for validity | |
3197 jvmtiError | |
3198 JvmtiEnv::RawMonitorNotifyAll(JvmtiRawMonitor * rmonitor) { | |
3199 int r; | |
3200 Thread* thread = Thread::current(); | |
3201 | |
3202 if (thread->is_Java_thread()) { | |
3203 JavaThread* current_thread = (JavaThread*)thread; | |
3204 ThreadInVMfromUnknown __tiv; | |
3205 r = rmonitor->raw_notifyAll(current_thread); | |
3206 } else { | |
3207 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
3208 r = rmonitor->raw_notifyAll(thread); | |
3209 } else { | |
3210 ShouldNotReachHere(); | |
3211 } | |
3212 } | |
3213 | |
3214 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
3215 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3216 } | |
3217 assert(r == ObjectMonitor::OM_OK, "raw_notifyAll should have worked"); | |
3218 if (r != ObjectMonitor::OM_OK) { // robustness | |
3219 return JVMTI_ERROR_INTERNAL; | |
3220 } | |
3221 | |
3222 return JVMTI_ERROR_NONE; | |
3223 } /* end RawMonitorNotifyAll */ | |
3224 | |
3225 | |
3226 // | |
3227 // JNI Function Interception functions | |
3228 // | |
3229 | |
3230 | |
3231 // function_table - pre-checked for NULL | |
3232 jvmtiError | |
3233 JvmtiEnv::SetJNIFunctionTable(const jniNativeInterface* function_table) { | |
3234 // Copy jni function table at safepoint. | |
3235 VM_JNIFunctionTableCopier copier(function_table); | |
3236 VMThread::execute(&copier); | |
3237 | |
3238 return JVMTI_ERROR_NONE; | |
3239 } /* end SetJNIFunctionTable */ | |
3240 | |
3241 | |
3242 // function_table - pre-checked for NULL | |
3243 jvmtiError | |
3244 JvmtiEnv::GetJNIFunctionTable(jniNativeInterface** function_table) { | |
3245 *function_table=(jniNativeInterface*)jvmtiMalloc(sizeof(jniNativeInterface)); | |
3246 if (*function_table == NULL) | |
3247 return JVMTI_ERROR_OUT_OF_MEMORY; | |
3248 memcpy(*function_table,(JavaThread::current())->get_jni_functions(),sizeof(jniNativeInterface)); | |
3249 return JVMTI_ERROR_NONE; | |
3250 } /* end GetJNIFunctionTable */ | |
3251 | |
3252 | |
3253 // | |
3254 // Event Management functions | |
3255 // | |
3256 | |
3257 jvmtiError | |
3258 JvmtiEnv::GenerateEvents(jvmtiEvent event_type) { | |
3259 // can only generate two event types | |
3260 if (event_type != JVMTI_EVENT_COMPILED_METHOD_LOAD && | |
3261 event_type != JVMTI_EVENT_DYNAMIC_CODE_GENERATED) { | |
3262 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
3263 } | |
3264 | |
3265 // for compiled_method_load events we must check that the environment | |
3266 // has the can_generate_compiled_method_load_events capability. | |
3267 if (event_type == JVMTI_EVENT_COMPILED_METHOD_LOAD) { | |
3268 if (get_capabilities()->can_generate_compiled_method_load_events == 0) { | |
3269 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; | |
3270 } | |
3271 return JvmtiCodeBlobEvents::generate_compiled_method_load_events(this); | |
3272 } else { | |
3273 return JvmtiCodeBlobEvents::generate_dynamic_code_events(this); | |
3274 } | |
3275 | |
3276 } /* end GenerateEvents */ | |
3277 | |
3278 | |
3279 // | |
3280 // Extension Mechanism functions | |
3281 // | |
3282 | |
3283 // extension_count_ptr - pre-checked for NULL | |
3284 // extensions - pre-checked for NULL | |
3285 jvmtiError | |
3286 JvmtiEnv::GetExtensionFunctions(jint* extension_count_ptr, jvmtiExtensionFunctionInfo** extensions) { | |
3287 return JvmtiExtensions::get_functions(this, extension_count_ptr, extensions); | |
3288 } /* end GetExtensionFunctions */ | |
3289 | |
3290 | |
3291 // extension_count_ptr - pre-checked for NULL | |
3292 // extensions - pre-checked for NULL | |
3293 jvmtiError | |
3294 JvmtiEnv::GetExtensionEvents(jint* extension_count_ptr, jvmtiExtensionEventInfo** extensions) { | |
3295 return JvmtiExtensions::get_events(this, extension_count_ptr, extensions); | |
3296 } /* end GetExtensionEvents */ | |
3297 | |
3298 | |
3299 // callback - NULL is a valid value, must be checked | |
3300 jvmtiError | |
3301 JvmtiEnv::SetExtensionEventCallback(jint extension_event_index, jvmtiExtensionEvent callback) { | |
3302 return JvmtiExtensions::set_event_callback(this, extension_event_index, callback); | |
3303 } /* end SetExtensionEventCallback */ | |
3304 | |
3305 // | |
3306 // Timers functions | |
3307 // | |
3308 | |
3309 // info_ptr - pre-checked for NULL | |
3310 jvmtiError | |
3311 JvmtiEnv::GetCurrentThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) { | |
3312 os::current_thread_cpu_time_info(info_ptr); | |
3313 return JVMTI_ERROR_NONE; | |
3314 } /* end GetCurrentThreadCpuTimerInfo */ | |
3315 | |
3316 | |
3317 // nanos_ptr - pre-checked for NULL | |
3318 jvmtiError | |
3319 JvmtiEnv::GetCurrentThreadCpuTime(jlong* nanos_ptr) { | |
3320 *nanos_ptr = os::current_thread_cpu_time(); | |
3321 return JVMTI_ERROR_NONE; | |
3322 } /* end GetCurrentThreadCpuTime */ | |
3323 | |
3324 | |
3325 // info_ptr - pre-checked for NULL | |
3326 jvmtiError | |
3327 JvmtiEnv::GetThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) { | |
3328 os::thread_cpu_time_info(info_ptr); | |
3329 return JVMTI_ERROR_NONE; | |
3330 } /* end GetThreadCpuTimerInfo */ | |
3331 | |
3332 | |
3333 // Threads_lock NOT held, java_thread not protected by lock | |
3334 // java_thread - pre-checked | |
3335 // nanos_ptr - pre-checked for NULL | |
3336 jvmtiError | |
3337 JvmtiEnv::GetThreadCpuTime(JavaThread* java_thread, jlong* nanos_ptr) { | |
3338 *nanos_ptr = os::thread_cpu_time(java_thread); | |
3339 return JVMTI_ERROR_NONE; | |
3340 } /* end GetThreadCpuTime */ | |
3341 | |
3342 | |
3343 // info_ptr - pre-checked for NULL | |
3344 jvmtiError | |
3345 JvmtiEnv::GetTimerInfo(jvmtiTimerInfo* info_ptr) { | |
3346 os::javaTimeNanos_info(info_ptr); | |
3347 return JVMTI_ERROR_NONE; | |
3348 } /* end GetTimerInfo */ | |
3349 | |
3350 | |
3351 // nanos_ptr - pre-checked for NULL | |
3352 jvmtiError | |
3353 JvmtiEnv::GetTime(jlong* nanos_ptr) { | |
3354 *nanos_ptr = os::javaTimeNanos(); | |
3355 return JVMTI_ERROR_NONE; | |
3356 } /* end GetTime */ | |
3357 | |
3358 | |
3359 // processor_count_ptr - pre-checked for NULL | |
3360 jvmtiError | |
3361 JvmtiEnv::GetAvailableProcessors(jint* processor_count_ptr) { | |
3362 *processor_count_ptr = os::active_processor_count(); | |
3363 return JVMTI_ERROR_NONE; | |
3364 } /* end GetAvailableProcessors */ | |
3365 | |
3366 // | |
3367 // System Properties functions | |
3368 // | |
3369 | |
3370 // count_ptr - pre-checked for NULL | |
3371 // property_ptr - pre-checked for NULL | |
3372 jvmtiError | |
3373 JvmtiEnv::GetSystemProperties(jint* count_ptr, char*** property_ptr) { | |
3374 jvmtiError err = JVMTI_ERROR_NONE; | |
3375 | |
3376 *count_ptr = Arguments::PropertyList_count(Arguments::system_properties()); | |
3377 | |
3378 err = allocate(*count_ptr * sizeof(char *), (unsigned char **)property_ptr); | |
3379 if (err != JVMTI_ERROR_NONE) { | |
3380 return err; | |
3381 } | |
3382 int i = 0 ; | |
3383 for (SystemProperty* p = Arguments::system_properties(); p != NULL && i < *count_ptr; p = p->next(), i++) { | |
3384 const char *key = p->key(); | |
3385 char **tmp_value = *property_ptr+i; | |
3386 err = allocate((strlen(key)+1) * sizeof(char), (unsigned char**)tmp_value); | |
3387 if (err == JVMTI_ERROR_NONE) { | |
3388 strcpy(*tmp_value, key); | |
3389 } else { | |
3390 // clean up previously allocated memory. | |
3391 for (int j=0; j<i; j++) { | |
3392 Deallocate((unsigned char*)*property_ptr+j); | |
3393 } | |
3394 Deallocate((unsigned char*)property_ptr); | |
3395 break; | |
3396 } | |
3397 } | |
3398 return err; | |
3399 } /* end GetSystemProperties */ | |
3400 | |
3401 | |
3402 // property - pre-checked for NULL | |
3403 // value_ptr - pre-checked for NULL | |
3404 jvmtiError | |
3405 JvmtiEnv::GetSystemProperty(const char* property, char** value_ptr) { | |
3406 jvmtiError err = JVMTI_ERROR_NONE; | |
3407 const char *value; | |
3408 | |
3409 value = Arguments::PropertyList_get_value(Arguments::system_properties(), property); | |
3410 if (value == NULL) { | |
3411 err = JVMTI_ERROR_NOT_AVAILABLE; | |
3412 } else { | |
3413 err = allocate((strlen(value)+1) * sizeof(char), (unsigned char **)value_ptr); | |
3414 if (err == JVMTI_ERROR_NONE) { | |
3415 strcpy(*value_ptr, value); | |
3416 } | |
3417 } | |
3418 return err; | |
3419 } /* end GetSystemProperty */ | |
3420 | |
3421 | |
3422 // property - pre-checked for NULL | |
3423 // value - NULL is a valid value, must be checked | |
3424 jvmtiError | |
2100
b1a2afa37ec4
7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents:
2019
diff
changeset
|
3425 JvmtiEnv::SetSystemProperty(const char* property, const char* value_ptr) { |
0 | 3426 jvmtiError err =JVMTI_ERROR_NOT_AVAILABLE; |
3427 | |
3428 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
3429 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
|
3430 if (p->set_value((char *)value_ptr)) { |
0 | 3431 err = JVMTI_ERROR_NONE; |
3432 } | |
3433 } | |
3434 } | |
3435 return err; | |
3436 } /* end SetSystemProperty */ |