Mercurial > hg > truffle
annotate src/share/vm/prims/jvmtiEnv.cpp @ 6495:75f130f2b30f
moved AMD64 specific HotSpot code in com.oracle.graal.hotspot.amd64 project
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 03 Oct 2012 01:18:03 +0200 |
parents | 957c266d8bc5 |
children | e522a00b91aa |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/systemDictionary.hpp" | |
27 #include "classfile/vmSymbols.hpp" | |
28 #include "interpreter/bytecodeStream.hpp" | |
29 #include "interpreter/interpreter.hpp" | |
30 #include "jvmtifiles/jvmtiEnv.hpp" | |
31 #include "memory/resourceArea.hpp" | |
32 #include "memory/universe.inline.hpp" | |
33 #include "oops/cpCacheOop.hpp" | |
34 #include "oops/instanceKlass.hpp" | |
35 #include "prims/jniCheck.hpp" | |
36 #include "prims/jvm_misc.hpp" | |
37 #include "prims/jvmtiAgentThread.hpp" | |
38 #include "prims/jvmtiClassFileReconstituter.hpp" | |
39 #include "prims/jvmtiCodeBlobEvents.hpp" | |
40 #include "prims/jvmtiExtensions.hpp" | |
41 #include "prims/jvmtiGetLoadedClasses.hpp" | |
42 #include "prims/jvmtiImpl.hpp" | |
43 #include "prims/jvmtiManageCapabilities.hpp" | |
44 #include "prims/jvmtiRawMonitor.hpp" | |
45 #include "prims/jvmtiRedefineClasses.hpp" | |
46 #include "prims/jvmtiTagMap.hpp" | |
47 #include "prims/jvmtiThreadState.inline.hpp" | |
48 #include "prims/jvmtiUtil.hpp" | |
49 #include "runtime/arguments.hpp" | |
50 #include "runtime/deoptimization.hpp" | |
51 #include "runtime/interfaceSupport.hpp" | |
52 #include "runtime/javaCalls.hpp" | |
53 #include "runtime/jfieldIDWorkaround.hpp" | |
54 #include "runtime/osThread.hpp" | |
55 #include "runtime/reflectionUtils.hpp" | |
56 #include "runtime/signature.hpp" | |
57 #include "runtime/vframe.hpp" | |
58 #include "runtime/vmThread.hpp" | |
59 #include "services/threadService.hpp" | |
60 #include "utilities/exceptions.hpp" | |
61 #include "utilities/preserveException.hpp" | |
62 #ifdef TARGET_OS_FAMILY_linux | |
63 # include "thread_linux.inline.hpp" | |
64 #endif | |
65 #ifdef TARGET_OS_FAMILY_solaris | |
66 # include "thread_solaris.inline.hpp" | |
67 #endif | |
68 #ifdef TARGET_OS_FAMILY_windows | |
69 # include "thread_windows.inline.hpp" | |
70 #endif | |
3960 | 71 #ifdef TARGET_OS_FAMILY_bsd |
72 # include "thread_bsd.inline.hpp" | |
73 #endif | |
1972 | 74 |
0 | 75 |
76 | |
77 #define FIXLATER 0 // REMOVE this when completed. | |
78 | |
79 // FIXLATER: hook into JvmtiTrace | |
80 #define TraceJVMTICalls false | |
81 | |
1121 | 82 JvmtiEnv::JvmtiEnv(jint version) : JvmtiEnvBase(version) { |
0 | 83 } |
84 | |
85 JvmtiEnv::~JvmtiEnv() { | |
86 } | |
87 | |
88 JvmtiEnv* | |
1121 | 89 JvmtiEnv::create_a_jvmti(jint version) { |
90 return new JvmtiEnv(version); | |
0 | 91 } |
92 | |
93 // VM operation class to copy jni function table at safepoint. | |
94 // More than one java threads or jvmti agents may be reading/ | |
95 // modifying jni function tables. To reduce the risk of bad | |
96 // interaction b/w these threads it is copied at safepoint. | |
97 class VM_JNIFunctionTableCopier : public VM_Operation { | |
98 private: | |
99 const struct JNINativeInterface_ *_function_table; | |
100 public: | |
101 VM_JNIFunctionTableCopier(const struct JNINativeInterface_ *func_tbl) { | |
102 _function_table = func_tbl; | |
103 }; | |
104 | |
105 VMOp_Type type() const { return VMOp_JNIFunctionTableCopier; } | |
106 void doit() { | |
107 copy_jni_function_table(_function_table); | |
108 }; | |
109 }; | |
110 | |
111 // | |
112 // Do not change the "prefix" marker below, everything above it is copied | |
113 // unchanged into the filled stub, everything below is controlled by the | |
114 // stub filler (only method bodies are carried forward, and then only for | |
115 // functionality still in the spec). | |
116 // | |
117 // end file prefix | |
118 | |
119 // | |
120 // Memory Management functions | |
121 // | |
122 | |
123 // mem_ptr - pre-checked for NULL | |
124 jvmtiError | |
125 JvmtiEnv::Allocate(jlong size, unsigned char** mem_ptr) { | |
126 return allocate(size, mem_ptr); | |
127 } /* end Allocate */ | |
128 | |
129 | |
130 // mem - NULL is a valid value, must be checked | |
131 jvmtiError | |
132 JvmtiEnv::Deallocate(unsigned char* mem) { | |
133 return deallocate(mem); | |
134 } /* end Deallocate */ | |
135 | |
136 // Threads_lock NOT held, java_thread not protected by lock | |
137 // java_thread - pre-checked | |
138 // data - NULL is a valid value, must be checked | |
139 jvmtiError | |
140 JvmtiEnv::SetThreadLocalStorage(JavaThread* java_thread, const void* data) { | |
141 JvmtiThreadState* state = java_thread->jvmti_thread_state(); | |
142 if (state == NULL) { | |
143 if (data == NULL) { | |
144 // leaving state unset same as data set to NULL | |
145 return JVMTI_ERROR_NONE; | |
146 } | |
147 // otherwise, create the state | |
148 state = JvmtiThreadState::state_for(java_thread); | |
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149 if (state == NULL) { |
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150 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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151 } |
0 | 152 } |
153 state->env_thread_state(this)->set_agent_thread_local_storage_data((void*)data); | |
154 return JVMTI_ERROR_NONE; | |
155 } /* end SetThreadLocalStorage */ | |
156 | |
157 | |
158 // Threads_lock NOT held | |
159 // thread - NOT pre-checked | |
160 // data_ptr - pre-checked for NULL | |
161 jvmtiError | |
162 JvmtiEnv::GetThreadLocalStorage(jthread thread, void** data_ptr) { | |
163 JavaThread* current_thread = JavaThread::current(); | |
164 if (thread == NULL) { | |
165 JvmtiThreadState* state = current_thread->jvmti_thread_state(); | |
166 *data_ptr = (state == NULL) ? NULL : | |
167 state->env_thread_state(this)->get_agent_thread_local_storage_data(); | |
168 } else { | |
169 | |
170 // jvmti_GetThreadLocalStorage is "in native" and doesn't transition | |
171 // the thread to _thread_in_vm. However, when the TLS for a thread | |
172 // other than the current thread is required we need to transition | |
173 // from native so as to resolve the jthread. | |
174 | |
175 ThreadInVMfromNative __tiv(current_thread); | |
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176 VM_ENTRY_BASE(jvmtiError, JvmtiEnv::GetThreadLocalStorage , current_thread) |
0 | 177 debug_only(VMNativeEntryWrapper __vew;) |
178 | |
179 oop thread_oop = JNIHandles::resolve_external_guard(thread); | |
180 if (thread_oop == NULL) { | |
181 return JVMTI_ERROR_INVALID_THREAD; | |
182 } | |
1142 | 183 if (!thread_oop->is_a(SystemDictionary::Thread_klass())) { |
0 | 184 return JVMTI_ERROR_INVALID_THREAD; |
185 } | |
186 JavaThread* java_thread = java_lang_Thread::thread(thread_oop); | |
187 if (java_thread == NULL) { | |
188 return JVMTI_ERROR_THREAD_NOT_ALIVE; | |
189 } | |
190 JvmtiThreadState* state = java_thread->jvmti_thread_state(); | |
191 *data_ptr = (state == NULL) ? NULL : | |
192 state->env_thread_state(this)->get_agent_thread_local_storage_data(); | |
193 } | |
194 return JVMTI_ERROR_NONE; | |
195 } /* end GetThreadLocalStorage */ | |
196 | |
197 // | |
198 // Class functions | |
199 // | |
200 | |
201 // class_count_ptr - pre-checked for NULL | |
202 // classes_ptr - pre-checked for NULL | |
203 jvmtiError | |
204 JvmtiEnv::GetLoadedClasses(jint* class_count_ptr, jclass** classes_ptr) { | |
205 return JvmtiGetLoadedClasses::getLoadedClasses(this, class_count_ptr, classes_ptr); | |
206 } /* end GetLoadedClasses */ | |
207 | |
208 | |
209 // initiating_loader - NULL is a valid value, must be checked | |
210 // class_count_ptr - pre-checked for NULL | |
211 // classes_ptr - pre-checked for NULL | |
212 jvmtiError | |
213 JvmtiEnv::GetClassLoaderClasses(jobject initiating_loader, jint* class_count_ptr, jclass** classes_ptr) { | |
214 return JvmtiGetLoadedClasses::getClassLoaderClasses(this, initiating_loader, | |
215 class_count_ptr, classes_ptr); | |
216 } /* end GetClassLoaderClasses */ | |
217 | |
218 // k_mirror - may be primitive, this must be checked | |
219 // is_modifiable_class_ptr - pre-checked for NULL | |
220 jvmtiError | |
221 JvmtiEnv::IsModifiableClass(oop k_mirror, jboolean* is_modifiable_class_ptr) { | |
222 *is_modifiable_class_ptr = VM_RedefineClasses::is_modifiable_class(k_mirror)? | |
223 JNI_TRUE : JNI_FALSE; | |
224 return JVMTI_ERROR_NONE; | |
225 } /* end IsModifiableClass */ | |
226 | |
227 // class_count - pre-checked to be greater than or equal to 0 | |
228 // classes - pre-checked for NULL | |
229 jvmtiError | |
230 JvmtiEnv::RetransformClasses(jint class_count, const jclass* classes) { | |
231 //TODO: add locking | |
232 | |
233 int index; | |
234 JavaThread* current_thread = JavaThread::current(); | |
235 ResourceMark rm(current_thread); | |
236 | |
237 jvmtiClassDefinition* class_definitions = | |
238 NEW_RESOURCE_ARRAY(jvmtiClassDefinition, class_count); | |
239 NULL_CHECK(class_definitions, JVMTI_ERROR_OUT_OF_MEMORY); | |
240 | |
241 for (index = 0; index < class_count; index++) { | |
242 HandleMark hm(current_thread); | |
243 | |
244 jclass jcls = classes[index]; | |
245 oop k_mirror = JNIHandles::resolve_external_guard(jcls); | |
246 if (k_mirror == NULL) { | |
247 return JVMTI_ERROR_INVALID_CLASS; | |
248 } | |
1142 | 249 if (!k_mirror->is_a(SystemDictionary::Class_klass())) { |
0 | 250 return JVMTI_ERROR_INVALID_CLASS; |
251 } | |
252 | |
253 if (java_lang_Class::is_primitive(k_mirror)) { | |
254 return JVMTI_ERROR_UNMODIFIABLE_CLASS; | |
255 } | |
256 | |
257 klassOop k_oop = java_lang_Class::as_klassOop(k_mirror); | |
258 KlassHandle klass(current_thread, k_oop); | |
259 | |
260 jint status = klass->jvmti_class_status(); | |
261 if (status & (JVMTI_CLASS_STATUS_ERROR)) { | |
262 return JVMTI_ERROR_INVALID_CLASS; | |
263 } | |
264 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { | |
265 return JVMTI_ERROR_UNMODIFIABLE_CLASS; | |
266 } | |
267 | |
268 instanceKlassHandle ikh(current_thread, k_oop); | |
269 if (ikh->get_cached_class_file_bytes() == NULL) { | |
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270 // Not cached, we need to reconstitute the class file from the |
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271 // VM representation. We don't attach the reconstituted class |
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272 // bytes to the instanceKlass here because they have not been |
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273 // validated and we're not at a safepoint. |
0 | 274 constantPoolHandle constants(current_thread, ikh->constants()); |
275 ObjectLocker ol(constants, current_thread); // lock constant pool while we query it | |
276 | |
277 JvmtiClassFileReconstituter reconstituter(ikh); | |
278 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
279 return reconstituter.get_error(); | |
280 } | |
281 | |
282 class_definitions[index].class_byte_count = (jint)reconstituter.class_file_size(); | |
283 class_definitions[index].class_bytes = (unsigned char*) | |
284 reconstituter.class_file_bytes(); | |
285 } else { | |
286 // it is cached, get it from the cache | |
287 class_definitions[index].class_byte_count = ikh->get_cached_class_file_len(); | |
288 class_definitions[index].class_bytes = ikh->get_cached_class_file_bytes(); | |
289 } | |
290 class_definitions[index].klass = jcls; | |
291 } | |
292 VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_retransform); | |
293 VMThread::execute(&op); | |
294 return (op.check_error()); | |
295 } /* end RetransformClasses */ | |
296 | |
297 | |
298 // class_count - pre-checked to be greater than or equal to 0 | |
299 // class_definitions - pre-checked for NULL | |
300 jvmtiError | |
301 JvmtiEnv::RedefineClasses(jint class_count, const jvmtiClassDefinition* class_definitions) { | |
302 //TODO: add locking | |
303 VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_redefine); | |
304 VMThread::execute(&op); | |
305 return (op.check_error()); | |
306 } /* end RedefineClasses */ | |
307 | |
308 | |
309 // | |
310 // Object functions | |
311 // | |
312 | |
313 // size_ptr - pre-checked for NULL | |
314 jvmtiError | |
315 JvmtiEnv::GetObjectSize(jobject object, jlong* size_ptr) { | |
316 oop mirror = JNIHandles::resolve_external_guard(object); | |
317 NULL_CHECK(mirror, JVMTI_ERROR_INVALID_OBJECT); | |
318 | |
1142 | 319 if (mirror->klass() == SystemDictionary::Class_klass()) { |
0 | 320 if (!java_lang_Class::is_primitive(mirror)) { |
321 mirror = java_lang_Class::as_klassOop(mirror); | |
322 assert(mirror != NULL, "class for non-primitive mirror must exist"); | |
323 } | |
324 } | |
325 | |
326 *size_ptr = mirror->size() * wordSize; | |
327 return JVMTI_ERROR_NONE; | |
328 } /* end GetObjectSize */ | |
329 | |
330 // | |
331 // Method functions | |
332 // | |
333 | |
334 // prefix - NULL is a valid value, must be checked | |
335 jvmtiError | |
336 JvmtiEnv::SetNativeMethodPrefix(const char* prefix) { | |
337 return prefix == NULL? | |
338 SetNativeMethodPrefixes(0, NULL) : | |
339 SetNativeMethodPrefixes(1, (char**)&prefix); | |
340 } /* end SetNativeMethodPrefix */ | |
341 | |
342 | |
343 // prefix_count - pre-checked to be greater than or equal to 0 | |
344 // prefixes - pre-checked for NULL | |
345 jvmtiError | |
346 JvmtiEnv::SetNativeMethodPrefixes(jint prefix_count, char** prefixes) { | |
347 // Have to grab JVMTI thread state lock to be sure that some thread | |
348 // isn't accessing the prefixes at the same time we are setting them. | |
349 // No locks during VM bring-up. | |
350 if (Threads::number_of_threads() == 0) { | |
351 return set_native_method_prefixes(prefix_count, prefixes); | |
352 } else { | |
353 MutexLocker mu(JvmtiThreadState_lock); | |
354 return set_native_method_prefixes(prefix_count, prefixes); | |
355 } | |
356 } /* end SetNativeMethodPrefixes */ | |
357 | |
358 // | |
359 // Event Management functions | |
360 // | |
361 | |
362 // callbacks - NULL is a valid value, must be checked | |
363 // size_of_callbacks - pre-checked to be greater than or equal to 0 | |
364 jvmtiError | |
365 JvmtiEnv::SetEventCallbacks(const jvmtiEventCallbacks* callbacks, jint size_of_callbacks) { | |
366 JvmtiEventController::set_event_callbacks(this, callbacks, size_of_callbacks); | |
367 return JVMTI_ERROR_NONE; | |
368 } /* end SetEventCallbacks */ | |
369 | |
370 | |
371 // event_thread - NULL is a valid value, must be checked | |
372 jvmtiError | |
373 JvmtiEnv::SetEventNotificationMode(jvmtiEventMode mode, jvmtiEvent event_type, jthread event_thread, ...) { | |
374 JavaThread* java_thread = NULL; | |
375 if (event_thread != NULL) { | |
376 oop thread_oop = JNIHandles::resolve_external_guard(event_thread); | |
377 if (thread_oop == NULL) { | |
378 return JVMTI_ERROR_INVALID_THREAD; | |
379 } | |
1142 | 380 if (!thread_oop->is_a(SystemDictionary::Thread_klass())) { |
0 | 381 return JVMTI_ERROR_INVALID_THREAD; |
382 } | |
383 java_thread = java_lang_Thread::thread(thread_oop); | |
384 if (java_thread == NULL) { | |
385 return JVMTI_ERROR_THREAD_NOT_ALIVE; | |
386 } | |
387 } | |
388 | |
389 // event_type must be valid | |
390 if (!JvmtiEventController::is_valid_event_type(event_type)) { | |
391 return JVMTI_ERROR_INVALID_EVENT_TYPE; | |
392 } | |
393 | |
394 // global events cannot be controlled at thread level. | |
395 if (java_thread != NULL && JvmtiEventController::is_global_event(event_type)) { | |
396 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
397 } | |
398 | |
399 bool enabled = (mode == JVMTI_ENABLE); | |
400 | |
401 // assure that needed capabilities are present | |
402 if (enabled && !JvmtiUtil::has_event_capability(event_type, get_capabilities())) { | |
403 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; | |
404 } | |
405 | |
406 if (event_type == JVMTI_EVENT_CLASS_FILE_LOAD_HOOK && enabled) { | |
407 record_class_file_load_hook_enabled(); | |
408 } | |
409 JvmtiEventController::set_user_enabled(this, java_thread, event_type, enabled); | |
410 | |
411 return JVMTI_ERROR_NONE; | |
412 } /* end SetEventNotificationMode */ | |
413 | |
414 // | |
415 // Capability functions | |
416 // | |
417 | |
418 // capabilities_ptr - pre-checked for NULL | |
419 jvmtiError | |
420 JvmtiEnv::GetPotentialCapabilities(jvmtiCapabilities* capabilities_ptr) { | |
421 JvmtiManageCapabilities::get_potential_capabilities(get_capabilities(), | |
422 get_prohibited_capabilities(), | |
423 capabilities_ptr); | |
424 return JVMTI_ERROR_NONE; | |
425 } /* end GetPotentialCapabilities */ | |
426 | |
427 | |
428 // capabilities_ptr - pre-checked for NULL | |
429 jvmtiError | |
430 JvmtiEnv::AddCapabilities(const jvmtiCapabilities* capabilities_ptr) { | |
431 return JvmtiManageCapabilities::add_capabilities(get_capabilities(), | |
432 get_prohibited_capabilities(), | |
433 capabilities_ptr, | |
434 get_capabilities()); | |
435 } /* end AddCapabilities */ | |
436 | |
437 | |
438 // capabilities_ptr - pre-checked for NULL | |
439 jvmtiError | |
440 JvmtiEnv::RelinquishCapabilities(const jvmtiCapabilities* capabilities_ptr) { | |
441 JvmtiManageCapabilities::relinquish_capabilities(get_capabilities(), capabilities_ptr, get_capabilities()); | |
442 return JVMTI_ERROR_NONE; | |
443 } /* end RelinquishCapabilities */ | |
444 | |
445 | |
446 // capabilities_ptr - pre-checked for NULL | |
447 jvmtiError | |
448 JvmtiEnv::GetCapabilities(jvmtiCapabilities* capabilities_ptr) { | |
449 JvmtiManageCapabilities::copy_capabilities(get_capabilities(), capabilities_ptr); | |
450 return JVMTI_ERROR_NONE; | |
451 } /* end GetCapabilities */ | |
452 | |
453 // | |
454 // Class Loader Search functions | |
455 // | |
456 | |
457 // segment - pre-checked for NULL | |
458 jvmtiError | |
459 JvmtiEnv::AddToBootstrapClassLoaderSearch(const char* segment) { | |
460 jvmtiPhase phase = get_phase(); | |
461 if (phase == JVMTI_PHASE_ONLOAD) { | |
462 Arguments::append_sysclasspath(segment); | |
463 return JVMTI_ERROR_NONE; | |
1121 | 464 } else if (use_version_1_0_semantics()) { |
465 // This JvmtiEnv requested version 1.0 semantics and this function | |
466 // is only allowed in the ONLOAD phase in version 1.0 so we need to | |
467 // return an error here. | |
468 return JVMTI_ERROR_WRONG_PHASE; | |
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469 } else if (phase == JVMTI_PHASE_LIVE) { |
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470 // The phase is checked by the wrapper that called this function, |
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471 // but this thread could be racing with the thread that is |
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472 // terminating the VM so we check one more time. |
0 | 473 |
474 // create the zip entry | |
475 ClassPathZipEntry* zip_entry = ClassLoader::create_class_path_zip_entry(segment); | |
476 if (zip_entry == NULL) { | |
477 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
478 } | |
479 | |
480 // lock the loader | |
481 Thread* thread = Thread::current(); | |
482 HandleMark hm; | |
483 Handle loader_lock = Handle(thread, SystemDictionary::system_loader_lock()); | |
484 | |
485 ObjectLocker ol(loader_lock, thread); | |
486 | |
487 // add the jar file to the bootclasspath | |
488 if (TraceClassLoading) { | |
489 tty->print_cr("[Opened %s]", zip_entry->name()); | |
490 } | |
491 ClassLoader::add_to_list(zip_entry); | |
492 return JVMTI_ERROR_NONE; | |
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493 } else { |
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494 return JVMTI_ERROR_WRONG_PHASE; |
0 | 495 } |
496 | |
497 } /* end AddToBootstrapClassLoaderSearch */ | |
498 | |
499 | |
500 // segment - pre-checked for NULL | |
501 jvmtiError | |
502 JvmtiEnv::AddToSystemClassLoaderSearch(const char* segment) { | |
503 jvmtiPhase phase = get_phase(); | |
504 | |
505 if (phase == JVMTI_PHASE_ONLOAD) { | |
506 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
507 if (strcmp("java.class.path", p->key()) == 0) { | |
508 p->append_value(segment); | |
509 break; | |
510 } | |
511 } | |
512 return JVMTI_ERROR_NONE; | |
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513 } else if (phase == JVMTI_PHASE_LIVE) { |
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514 // The phase is checked by the wrapper that called this function, |
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515 // but this thread could be racing with the thread that is |
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516 // terminating the VM so we check one more time. |
0 | 517 HandleMark hm; |
518 | |
519 // create the zip entry (which will open the zip file and hence | |
520 // check that the segment is indeed a zip file). | |
521 ClassPathZipEntry* zip_entry = ClassLoader::create_class_path_zip_entry(segment); | |
522 if (zip_entry == NULL) { | |
523 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
524 } | |
525 delete zip_entry; // no longer needed | |
526 | |
527 // lock the loader | |
528 Thread* THREAD = Thread::current(); | |
529 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); | |
530 | |
531 ObjectLocker ol(loader, THREAD); | |
532 | |
533 // need the path as java.lang.String | |
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534 Handle path = java_lang_String::create_from_platform_dependent_str(segment, THREAD); |
0 | 535 if (HAS_PENDING_EXCEPTION) { |
536 CLEAR_PENDING_EXCEPTION; | |
537 return JVMTI_ERROR_INTERNAL; | |
538 } | |
539 | |
540 instanceKlassHandle loader_ik(THREAD, loader->klass()); | |
541 | |
542 // Invoke the appendToClassPathForInstrumentation method - if the method | |
543 // is not found it means the loader doesn't support adding to the class path | |
544 // in the live phase. | |
545 { | |
546 JavaValue res(T_VOID); | |
547 JavaCalls::call_special(&res, | |
548 loader, | |
549 loader_ik, | |
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550 vmSymbols::appendToClassPathForInstrumentation_name(), |
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551 vmSymbols::appendToClassPathForInstrumentation_signature(), |
0 | 552 path, |
553 THREAD); | |
554 if (HAS_PENDING_EXCEPTION) { | |
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555 Symbol* ex_name = PENDING_EXCEPTION->klass()->klass_part()->name(); |
0 | 556 CLEAR_PENDING_EXCEPTION; |
557 | |
558 if (ex_name == vmSymbols::java_lang_NoSuchMethodError()) { | |
559 return JVMTI_ERROR_CLASS_LOADER_UNSUPPORTED; | |
560 } else { | |
561 return JVMTI_ERROR_INTERNAL; | |
562 } | |
563 } | |
564 } | |
565 | |
566 return JVMTI_ERROR_NONE; | |
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567 } else { |
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568 return JVMTI_ERROR_WRONG_PHASE; |
0 | 569 } |
570 } /* end AddToSystemClassLoaderSearch */ | |
571 | |
572 // | |
573 // General functions | |
574 // | |
575 | |
576 // phase_ptr - pre-checked for NULL | |
577 jvmtiError | |
578 JvmtiEnv::GetPhase(jvmtiPhase* phase_ptr) { | |
579 *phase_ptr = get_phase(); | |
580 return JVMTI_ERROR_NONE; | |
581 } /* end GetPhase */ | |
582 | |
583 | |
584 jvmtiError | |
585 JvmtiEnv::DisposeEnvironment() { | |
586 dispose(); | |
587 return JVMTI_ERROR_NONE; | |
588 } /* end DisposeEnvironment */ | |
589 | |
590 | |
591 // data - NULL is a valid value, must be checked | |
592 jvmtiError | |
593 JvmtiEnv::SetEnvironmentLocalStorage(const void* data) { | |
594 set_env_local_storage(data); | |
595 return JVMTI_ERROR_NONE; | |
596 } /* end SetEnvironmentLocalStorage */ | |
597 | |
598 | |
599 // data_ptr - pre-checked for NULL | |
600 jvmtiError | |
601 JvmtiEnv::GetEnvironmentLocalStorage(void** data_ptr) { | |
602 *data_ptr = (void*)get_env_local_storage(); | |
603 return JVMTI_ERROR_NONE; | |
604 } /* end GetEnvironmentLocalStorage */ | |
605 | |
606 // version_ptr - pre-checked for NULL | |
607 jvmtiError | |
608 JvmtiEnv::GetVersionNumber(jint* version_ptr) { | |
609 *version_ptr = JVMTI_VERSION; | |
610 return JVMTI_ERROR_NONE; | |
611 } /* end GetVersionNumber */ | |
612 | |
613 | |
614 // name_ptr - pre-checked for NULL | |
615 jvmtiError | |
616 JvmtiEnv::GetErrorName(jvmtiError error, char** name_ptr) { | |
617 if (error < JVMTI_ERROR_NONE || error > JVMTI_ERROR_MAX) { | |
618 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
619 } | |
620 const char *name = JvmtiUtil::error_name(error); | |
621 if (name == NULL) { | |
622 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
623 } | |
624 size_t len = strlen(name) + 1; | |
625 jvmtiError err = allocate(len, (unsigned char**)name_ptr); | |
626 if (err == JVMTI_ERROR_NONE) { | |
627 memcpy(*name_ptr, name, len); | |
628 } | |
629 return err; | |
630 } /* end GetErrorName */ | |
631 | |
632 | |
633 jvmtiError | |
634 JvmtiEnv::SetVerboseFlag(jvmtiVerboseFlag flag, jboolean value) { | |
635 switch (flag) { | |
636 case JVMTI_VERBOSE_OTHER: | |
637 // ignore | |
638 break; | |
639 case JVMTI_VERBOSE_CLASS: | |
640 TraceClassLoading = value != 0; | |
641 TraceClassUnloading = value != 0; | |
642 break; | |
643 case JVMTI_VERBOSE_GC: | |
644 PrintGC = value != 0; | |
645 break; | |
646 case JVMTI_VERBOSE_JNI: | |
647 PrintJNIResolving = value != 0; | |
648 break; | |
649 default: | |
650 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
651 }; | |
652 return JVMTI_ERROR_NONE; | |
653 } /* end SetVerboseFlag */ | |
654 | |
655 | |
656 // format_ptr - pre-checked for NULL | |
657 jvmtiError | |
658 JvmtiEnv::GetJLocationFormat(jvmtiJlocationFormat* format_ptr) { | |
659 *format_ptr = JVMTI_JLOCATION_JVMBCI; | |
660 return JVMTI_ERROR_NONE; | |
661 } /* end GetJLocationFormat */ | |
662 | |
663 #ifndef JVMTI_KERNEL | |
664 | |
665 // | |
666 // Thread functions | |
667 // | |
668 | |
669 // Threads_lock NOT held | |
670 // thread - NOT pre-checked | |
671 // thread_state_ptr - pre-checked for NULL | |
672 jvmtiError | |
673 JvmtiEnv::GetThreadState(jthread thread, jint* thread_state_ptr) { | |
674 jint state; | |
675 oop thread_oop; | |
676 JavaThread* thr; | |
677 | |
678 if (thread == NULL) { | |
679 thread_oop = JavaThread::current()->threadObj(); | |
680 } else { | |
681 thread_oop = JNIHandles::resolve_external_guard(thread); | |
682 } | |
683 | |
1142 | 684 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) { |
0 | 685 return JVMTI_ERROR_INVALID_THREAD; |
686 } | |
687 | |
688 // get most state bits | |
689 state = (jint)java_lang_Thread::get_thread_status(thread_oop); | |
690 | |
691 // add more state bits | |
692 thr = java_lang_Thread::thread(thread_oop); | |
693 if (thr != NULL) { | |
694 JavaThreadState jts = thr->thread_state(); | |
695 | |
696 if (thr->is_being_ext_suspended()) { | |
697 state |= JVMTI_THREAD_STATE_SUSPENDED; | |
698 } | |
699 if (jts == _thread_in_native) { | |
700 state |= JVMTI_THREAD_STATE_IN_NATIVE; | |
701 } | |
702 OSThread* osThread = thr->osthread(); | |
703 if (osThread != NULL && osThread->interrupted()) { | |
704 state |= JVMTI_THREAD_STATE_INTERRUPTED; | |
705 } | |
706 } | |
707 | |
708 *thread_state_ptr = state; | |
709 return JVMTI_ERROR_NONE; | |
710 } /* end GetThreadState */ | |
711 | |
712 | |
713 // thread_ptr - pre-checked for NULL | |
714 jvmtiError | |
715 JvmtiEnv::GetCurrentThread(jthread* thread_ptr) { | |
716 JavaThread* current_thread = JavaThread::current(); | |
717 *thread_ptr = (jthread)JNIHandles::make_local(current_thread, current_thread->threadObj()); | |
718 return JVMTI_ERROR_NONE; | |
719 } /* end GetCurrentThread */ | |
720 | |
721 | |
722 // threads_count_ptr - pre-checked for NULL | |
723 // threads_ptr - pre-checked for NULL | |
724 jvmtiError | |
725 JvmtiEnv::GetAllThreads(jint* threads_count_ptr, jthread** threads_ptr) { | |
726 int nthreads = 0; | |
727 Handle *thread_objs = NULL; | |
728 ResourceMark rm; | |
729 HandleMark hm; | |
730 | |
731 // enumerate threads (including agent threads) | |
732 ThreadsListEnumerator tle(Thread::current(), true); | |
733 nthreads = tle.num_threads(); | |
734 *threads_count_ptr = nthreads; | |
735 | |
736 if (nthreads == 0) { | |
737 *threads_ptr = NULL; | |
738 return JVMTI_ERROR_NONE; | |
739 } | |
740 | |
741 thread_objs = NEW_RESOURCE_ARRAY(Handle, nthreads); | |
742 NULL_CHECK(thread_objs, JVMTI_ERROR_OUT_OF_MEMORY); | |
743 | |
744 for (int i=0; i < nthreads; i++) { | |
745 thread_objs[i] = Handle(tle.get_threadObj(i)); | |
746 } | |
747 | |
748 // have to make global handles outside of Threads_lock | |
749 jthread *jthreads = new_jthreadArray(nthreads, thread_objs); | |
750 NULL_CHECK(jthreads, JVMTI_ERROR_OUT_OF_MEMORY); | |
751 | |
752 *threads_ptr = jthreads; | |
753 return JVMTI_ERROR_NONE; | |
754 } /* end GetAllThreads */ | |
755 | |
756 | |
757 // Threads_lock NOT held, java_thread not protected by lock | |
758 // java_thread - pre-checked | |
759 jvmtiError | |
760 JvmtiEnv::SuspendThread(JavaThread* java_thread) { | |
761 // don't allow hidden thread suspend request. | |
762 if (java_thread->is_hidden_from_external_view()) { | |
763 return (JVMTI_ERROR_NONE); | |
764 } | |
765 | |
766 { | |
767 MutexLockerEx ml(java_thread->SR_lock(), Mutex::_no_safepoint_check_flag); | |
768 if (java_thread->is_external_suspend()) { | |
769 // don't allow nested external suspend requests. | |
770 return (JVMTI_ERROR_THREAD_SUSPENDED); | |
771 } | |
772 if (java_thread->is_exiting()) { // thread is in the process of exiting | |
773 return (JVMTI_ERROR_THREAD_NOT_ALIVE); | |
774 } | |
775 java_thread->set_external_suspend(); | |
776 } | |
777 | |
778 if (!JvmtiSuspendControl::suspend(java_thread)) { | |
779 // the thread was in the process of exiting | |
780 return (JVMTI_ERROR_THREAD_NOT_ALIVE); | |
781 } | |
782 return JVMTI_ERROR_NONE; | |
783 } /* end SuspendThread */ | |
784 | |
785 | |
786 // request_count - pre-checked to be greater than or equal to 0 | |
787 // request_list - pre-checked for NULL | |
788 // results - pre-checked for NULL | |
789 jvmtiError | |
790 JvmtiEnv::SuspendThreadList(jint request_count, const jthread* request_list, jvmtiError* results) { | |
791 int needSafepoint = 0; // > 0 if we need a safepoint | |
792 for (int i = 0; i < request_count; i++) { | |
793 JavaThread *java_thread = get_JavaThread(request_list[i]); | |
794 if (java_thread == NULL) { | |
795 results[i] = JVMTI_ERROR_INVALID_THREAD; | |
796 continue; | |
797 } | |
798 // the thread has not yet run or has exited (not on threads list) | |
799 if (java_thread->threadObj() == NULL) { | |
800 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
801 continue; | |
802 } | |
803 if (java_lang_Thread::thread(java_thread->threadObj()) == NULL) { | |
804 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
805 continue; | |
806 } | |
807 // don't allow hidden thread suspend request. | |
808 if (java_thread->is_hidden_from_external_view()) { | |
809 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend | |
810 continue; | |
811 } | |
812 | |
813 { | |
814 MutexLockerEx ml(java_thread->SR_lock(), Mutex::_no_safepoint_check_flag); | |
815 if (java_thread->is_external_suspend()) { | |
816 // don't allow nested external suspend requests. | |
817 results[i] = JVMTI_ERROR_THREAD_SUSPENDED; | |
818 continue; | |
819 } | |
820 if (java_thread->is_exiting()) { // thread is in the process of exiting | |
821 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
822 continue; | |
823 } | |
824 java_thread->set_external_suspend(); | |
825 } | |
826 if (java_thread->thread_state() == _thread_in_native) { | |
827 // We need to try and suspend native threads here. Threads in | |
828 // other states will self-suspend on their next transition. | |
829 if (!JvmtiSuspendControl::suspend(java_thread)) { | |
830 // The thread was in the process of exiting. Force another | |
831 // safepoint to make sure that this thread transitions. | |
832 needSafepoint++; | |
833 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
834 continue; | |
835 } | |
836 } else { | |
837 needSafepoint++; | |
838 } | |
839 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend | |
840 } | |
841 if (needSafepoint > 0) { | |
842 VM_ForceSafepoint vfs; | |
843 VMThread::execute(&vfs); | |
844 } | |
845 // per-thread suspend results returned via results parameter | |
846 return JVMTI_ERROR_NONE; | |
847 } /* end SuspendThreadList */ | |
848 | |
849 | |
850 // Threads_lock NOT held, java_thread not protected by lock | |
851 // java_thread - pre-checked | |
852 jvmtiError | |
853 JvmtiEnv::ResumeThread(JavaThread* java_thread) { | |
854 // don't allow hidden thread resume request. | |
855 if (java_thread->is_hidden_from_external_view()) { | |
856 return JVMTI_ERROR_NONE; | |
857 } | |
858 | |
859 if (!java_thread->is_being_ext_suspended()) { | |
860 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
861 } | |
862 | |
863 if (!JvmtiSuspendControl::resume(java_thread)) { | |
864 return JVMTI_ERROR_INTERNAL; | |
865 } | |
866 return JVMTI_ERROR_NONE; | |
867 } /* end ResumeThread */ | |
868 | |
869 | |
870 // request_count - pre-checked to be greater than or equal to 0 | |
871 // request_list - pre-checked for NULL | |
872 // results - pre-checked for NULL | |
873 jvmtiError | |
874 JvmtiEnv::ResumeThreadList(jint request_count, const jthread* request_list, jvmtiError* results) { | |
875 for (int i = 0; i < request_count; i++) { | |
876 JavaThread *java_thread = get_JavaThread(request_list[i]); | |
877 if (java_thread == NULL) { | |
878 results[i] = JVMTI_ERROR_INVALID_THREAD; | |
879 continue; | |
880 } | |
881 // don't allow hidden thread resume request. | |
882 if (java_thread->is_hidden_from_external_view()) { | |
883 results[i] = JVMTI_ERROR_NONE; // indicate successful resume | |
884 continue; | |
885 } | |
886 if (!java_thread->is_being_ext_suspended()) { | |
887 results[i] = JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
888 continue; | |
889 } | |
890 | |
891 if (!JvmtiSuspendControl::resume(java_thread)) { | |
892 results[i] = JVMTI_ERROR_INTERNAL; | |
893 continue; | |
894 } | |
895 | |
896 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend | |
897 } | |
898 // per-thread resume results returned via results parameter | |
899 return JVMTI_ERROR_NONE; | |
900 } /* end ResumeThreadList */ | |
901 | |
902 | |
903 // Threads_lock NOT held, java_thread not protected by lock | |
904 // java_thread - pre-checked | |
905 jvmtiError | |
906 JvmtiEnv::StopThread(JavaThread* java_thread, jobject exception) { | |
907 oop e = JNIHandles::resolve_external_guard(exception); | |
908 NULL_CHECK(e, JVMTI_ERROR_NULL_POINTER); | |
909 | |
910 JavaThread::send_async_exception(java_thread->threadObj(), e); | |
911 | |
912 return JVMTI_ERROR_NONE; | |
913 | |
914 } /* end StopThread */ | |
915 | |
916 | |
917 // Threads_lock NOT held | |
918 // thread - NOT pre-checked | |
919 jvmtiError | |
920 JvmtiEnv::InterruptThread(jthread thread) { | |
921 oop thread_oop = JNIHandles::resolve_external_guard(thread); | |
1142 | 922 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) |
0 | 923 return JVMTI_ERROR_INVALID_THREAD; |
924 | |
925 JavaThread* current_thread = JavaThread::current(); | |
926 | |
927 // Todo: this is a duplicate of JVM_Interrupt; share code in future | |
928 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
929 MutexLockerEx ml(current_thread->threadObj() == thread_oop ? NULL : Threads_lock); | |
930 // We need to re-resolve the java_thread, since a GC might have happened during the | |
931 // acquire of the lock | |
932 | |
933 JavaThread* java_thread = java_lang_Thread::thread(JNIHandles::resolve_external_guard(thread)); | |
934 NULL_CHECK(java_thread, JVMTI_ERROR_THREAD_NOT_ALIVE); | |
935 | |
936 Thread::interrupt(java_thread); | |
937 | |
938 return JVMTI_ERROR_NONE; | |
939 } /* end InterruptThread */ | |
940 | |
941 | |
942 // Threads_lock NOT held | |
943 // thread - NOT pre-checked | |
944 // info_ptr - pre-checked for NULL | |
945 jvmtiError | |
946 JvmtiEnv::GetThreadInfo(jthread thread, jvmtiThreadInfo* info_ptr) { | |
947 ResourceMark rm; | |
948 HandleMark hm; | |
949 | |
950 JavaThread* current_thread = JavaThread::current(); | |
951 | |
952 // if thread is NULL the current thread is used | |
953 oop thread_oop; | |
954 if (thread == NULL) { | |
955 thread_oop = current_thread->threadObj(); | |
956 } else { | |
957 thread_oop = JNIHandles::resolve_external_guard(thread); | |
958 } | |
1142 | 959 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) |
0 | 960 return JVMTI_ERROR_INVALID_THREAD; |
961 | |
962 Handle thread_obj(current_thread, thread_oop); | |
963 typeArrayHandle name; | |
964 ThreadPriority priority; | |
965 Handle thread_group; | |
966 Handle context_class_loader; | |
967 bool is_daemon; | |
968 | |
969 { MutexLocker mu(Threads_lock); | |
970 | |
971 name = typeArrayHandle(current_thread, java_lang_Thread::name(thread_obj())); | |
972 priority = java_lang_Thread::priority(thread_obj()); | |
973 thread_group = Handle(current_thread, java_lang_Thread::threadGroup(thread_obj())); | |
974 is_daemon = java_lang_Thread::is_daemon(thread_obj()); | |
975 | |
976 oop loader = java_lang_Thread::context_class_loader(thread_obj()); | |
977 context_class_loader = Handle(current_thread, loader); | |
978 } | |
979 { const char *n; | |
980 | |
981 if (name() != NULL) { | |
982 n = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length()); | |
983 } else { | |
984 n = UNICODE::as_utf8(NULL, 0); | |
985 } | |
986 | |
987 info_ptr->name = (char *) jvmtiMalloc(strlen(n)+1); | |
988 if (info_ptr->name == NULL) | |
989 return JVMTI_ERROR_OUT_OF_MEMORY; | |
990 | |
991 strcpy(info_ptr->name, n); | |
992 } | |
993 info_ptr->is_daemon = is_daemon; | |
994 info_ptr->priority = priority; | |
995 | |
996 info_ptr->context_class_loader = (context_class_loader.is_null()) ? NULL : | |
997 jni_reference(context_class_loader); | |
998 info_ptr->thread_group = jni_reference(thread_group); | |
999 | |
1000 return JVMTI_ERROR_NONE; | |
1001 } /* end GetThreadInfo */ | |
1002 | |
1003 | |
1004 // Threads_lock NOT held, java_thread not protected by lock | |
1005 // java_thread - pre-checked | |
1006 // owned_monitor_count_ptr - pre-checked for NULL | |
1007 // owned_monitors_ptr - pre-checked for NULL | |
1008 jvmtiError | |
1009 JvmtiEnv::GetOwnedMonitorInfo(JavaThread* java_thread, jint* owned_monitor_count_ptr, jobject** owned_monitors_ptr) { | |
1010 jvmtiError err = JVMTI_ERROR_NONE; | |
1011 JavaThread* calling_thread = JavaThread::current(); | |
1012 | |
1013 // growable array of jvmti monitors info on the C-heap | |
1014 GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list = | |
6197 | 1015 new (ResourceObj::C_HEAP, mtInternal) GrowableArray<jvmtiMonitorStackDepthInfo*>(1, true); |
0 | 1016 |
1017 uint32_t debug_bits = 0; | |
1018 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
1019 err = get_owned_monitors(calling_thread, java_thread, owned_monitors_list); | |
1020 } else { | |
1021 // JVMTI get monitors info at safepoint. Do not require target thread to | |
1022 // be suspended. | |
1023 VM_GetOwnedMonitorInfo op(this, calling_thread, java_thread, owned_monitors_list); | |
1024 VMThread::execute(&op); | |
1025 err = op.result(); | |
1026 } | |
1027 jint owned_monitor_count = owned_monitors_list->length(); | |
1028 if (err == JVMTI_ERROR_NONE) { | |
1029 if ((err = allocate(owned_monitor_count * sizeof(jobject *), | |
1030 (unsigned char**)owned_monitors_ptr)) == JVMTI_ERROR_NONE) { | |
1031 // copy into the returned array | |
1032 for (int i = 0; i < owned_monitor_count; i++) { | |
1033 (*owned_monitors_ptr)[i] = | |
1034 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->monitor; | |
1035 } | |
1036 *owned_monitor_count_ptr = owned_monitor_count; | |
1037 } | |
1038 } | |
1039 // clean up. | |
1040 for (int i = 0; i < owned_monitor_count; i++) { | |
1041 deallocate((unsigned char*)owned_monitors_list->at(i)); | |
1042 } | |
1043 delete owned_monitors_list; | |
1044 | |
1045 return err; | |
1046 } /* end GetOwnedMonitorInfo */ | |
1047 | |
1048 | |
1049 // Threads_lock NOT held, java_thread not protected by lock | |
1050 // java_thread - pre-checked | |
1051 // monitor_info_count_ptr - pre-checked for NULL | |
1052 // monitor_info_ptr - pre-checked for NULL | |
1053 jvmtiError | |
1054 JvmtiEnv::GetOwnedMonitorStackDepthInfo(JavaThread* java_thread, jint* monitor_info_count_ptr, jvmtiMonitorStackDepthInfo** monitor_info_ptr) { | |
1055 jvmtiError err = JVMTI_ERROR_NONE; | |
1056 JavaThread* calling_thread = JavaThread::current(); | |
1057 | |
1058 // growable array of jvmti monitors info on the C-heap | |
1059 GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list = | |
6197 | 1060 new (ResourceObj::C_HEAP, mtInternal) GrowableArray<jvmtiMonitorStackDepthInfo*>(1, true); |
0 | 1061 |
1062 uint32_t debug_bits = 0; | |
1063 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
1064 err = get_owned_monitors(calling_thread, java_thread, owned_monitors_list); | |
1065 } else { | |
1066 // JVMTI get owned monitors info at safepoint. Do not require target thread to | |
1067 // be suspended. | |
1068 VM_GetOwnedMonitorInfo op(this, calling_thread, java_thread, owned_monitors_list); | |
1069 VMThread::execute(&op); | |
1070 err = op.result(); | |
1071 } | |
1072 | |
1073 jint owned_monitor_count = owned_monitors_list->length(); | |
1074 if (err == JVMTI_ERROR_NONE) { | |
1075 if ((err = allocate(owned_monitor_count * sizeof(jvmtiMonitorStackDepthInfo), | |
1076 (unsigned char**)monitor_info_ptr)) == JVMTI_ERROR_NONE) { | |
1077 // copy to output array. | |
1078 for (int i = 0; i < owned_monitor_count; i++) { | |
1079 (*monitor_info_ptr)[i].monitor = | |
1080 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->monitor; | |
1081 (*monitor_info_ptr)[i].stack_depth = | |
1082 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->stack_depth; | |
1083 } | |
1084 } | |
1085 *monitor_info_count_ptr = owned_monitor_count; | |
1086 } | |
1087 | |
1088 // clean up. | |
1089 for (int i = 0; i < owned_monitor_count; i++) { | |
1090 deallocate((unsigned char*)owned_monitors_list->at(i)); | |
1091 } | |
1092 delete owned_monitors_list; | |
1093 | |
1094 return err; | |
1095 } /* end GetOwnedMonitorStackDepthInfo */ | |
1096 | |
1097 | |
1098 // Threads_lock NOT held, java_thread not protected by lock | |
1099 // java_thread - pre-checked | |
1100 // monitor_ptr - pre-checked for NULL | |
1101 jvmtiError | |
1102 JvmtiEnv::GetCurrentContendedMonitor(JavaThread* java_thread, jobject* monitor_ptr) { | |
1103 jvmtiError err = JVMTI_ERROR_NONE; | |
1104 uint32_t debug_bits = 0; | |
1105 JavaThread* calling_thread = JavaThread::current(); | |
1106 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
1107 err = get_current_contended_monitor(calling_thread, java_thread, monitor_ptr); | |
1108 } else { | |
1109 // get contended monitor information at safepoint. | |
1110 VM_GetCurrentContendedMonitor op(this, calling_thread, java_thread, monitor_ptr); | |
1111 VMThread::execute(&op); | |
1112 err = op.result(); | |
1113 } | |
1114 return err; | |
1115 } /* end GetCurrentContendedMonitor */ | |
1116 | |
1117 | |
1118 // Threads_lock NOT held | |
1119 // thread - NOT pre-checked | |
1120 // proc - pre-checked for NULL | |
1121 // arg - NULL is a valid value, must be checked | |
1122 jvmtiError | |
1123 JvmtiEnv::RunAgentThread(jthread thread, jvmtiStartFunction proc, const void* arg, jint priority) { | |
1124 oop thread_oop = JNIHandles::resolve_external_guard(thread); | |
1142 | 1125 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) { |
0 | 1126 return JVMTI_ERROR_INVALID_THREAD; |
1127 } | |
1128 if (priority < JVMTI_THREAD_MIN_PRIORITY || priority > JVMTI_THREAD_MAX_PRIORITY) { | |
1129 return JVMTI_ERROR_INVALID_PRIORITY; | |
1130 } | |
1131 | |
1132 //Thread-self | |
1133 JavaThread* current_thread = JavaThread::current(); | |
1134 | |
1135 Handle thread_hndl(current_thread, thread_oop); | |
1136 { | |
1137 MutexLocker mu(Threads_lock); // grab Threads_lock | |
1138 | |
1139 JvmtiAgentThread *new_thread = new JvmtiAgentThread(this, proc, arg); | |
1140 | |
1141 // At this point it may be possible that no osthread was created for the | |
1142 // JavaThread due to lack of memory. | |
1143 if (new_thread == NULL || new_thread->osthread() == NULL) { | |
1144 if (new_thread) delete new_thread; | |
1145 return JVMTI_ERROR_OUT_OF_MEMORY; | |
1146 } | |
1147 | |
1148 java_lang_Thread::set_thread(thread_hndl(), new_thread); | |
1149 java_lang_Thread::set_priority(thread_hndl(), (ThreadPriority)priority); | |
1150 java_lang_Thread::set_daemon(thread_hndl()); | |
1151 | |
1152 new_thread->set_threadObj(thread_hndl()); | |
1153 Threads::add(new_thread); | |
1154 Thread::start(new_thread); | |
1155 } // unlock Threads_lock | |
1156 | |
1157 return JVMTI_ERROR_NONE; | |
1158 } /* end RunAgentThread */ | |
1159 | |
1160 // | |
1161 // Thread Group functions | |
1162 // | |
1163 | |
1164 // group_count_ptr - pre-checked for NULL | |
1165 // groups_ptr - pre-checked for NULL | |
1166 jvmtiError | |
1167 JvmtiEnv::GetTopThreadGroups(jint* group_count_ptr, jthreadGroup** groups_ptr) { | |
1168 JavaThread* current_thread = JavaThread::current(); | |
1169 | |
1170 // Only one top level thread group now. | |
1171 *group_count_ptr = 1; | |
1172 | |
1173 // Allocate memory to store global-refs to the thread groups. | |
1174 // Assume this area is freed by caller. | |
1175 *groups_ptr = (jthreadGroup *) jvmtiMalloc((sizeof(jthreadGroup)) * (*group_count_ptr)); | |
1176 | |
1177 NULL_CHECK(*groups_ptr, JVMTI_ERROR_OUT_OF_MEMORY); | |
1178 | |
1179 // Convert oop to Handle, then convert Handle to global-ref. | |
1180 { | |
1181 HandleMark hm(current_thread); | |
1182 Handle system_thread_group(current_thread, Universe::system_thread_group()); | |
1183 *groups_ptr[0] = jni_reference(system_thread_group); | |
1184 } | |
1185 | |
1186 return JVMTI_ERROR_NONE; | |
1187 } /* end GetTopThreadGroups */ | |
1188 | |
1189 | |
1190 // info_ptr - pre-checked for NULL | |
1191 jvmtiError | |
1192 JvmtiEnv::GetThreadGroupInfo(jthreadGroup group, jvmtiThreadGroupInfo* info_ptr) { | |
1193 ResourceMark rm; | |
1194 HandleMark hm; | |
1195 | |
1196 JavaThread* current_thread = JavaThread::current(); | |
1197 | |
1198 Handle group_obj (current_thread, JNIHandles::resolve_external_guard(group)); | |
1199 NULL_CHECK(group_obj(), JVMTI_ERROR_INVALID_THREAD_GROUP); | |
1200 | |
1201 typeArrayHandle name; | |
1202 Handle parent_group; | |
1203 bool is_daemon; | |
1204 ThreadPriority max_priority; | |
1205 | |
1206 { MutexLocker mu(Threads_lock); | |
1207 | |
1208 name = typeArrayHandle(current_thread, | |
1209 java_lang_ThreadGroup::name(group_obj())); | |
1210 parent_group = Handle(current_thread, java_lang_ThreadGroup::parent(group_obj())); | |
1211 is_daemon = java_lang_ThreadGroup::is_daemon(group_obj()); | |
1212 max_priority = java_lang_ThreadGroup::maxPriority(group_obj()); | |
1213 } | |
1214 | |
1215 info_ptr->is_daemon = is_daemon; | |
1216 info_ptr->max_priority = max_priority; | |
1217 info_ptr->parent = jni_reference(parent_group); | |
1218 | |
1219 if (name() != NULL) { | |
1220 const char* n = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length()); | |
1221 info_ptr->name = (char *)jvmtiMalloc(strlen(n)+1); | |
1222 NULL_CHECK(info_ptr->name, JVMTI_ERROR_OUT_OF_MEMORY); | |
1223 strcpy(info_ptr->name, n); | |
1224 } else { | |
1225 info_ptr->name = NULL; | |
1226 } | |
1227 | |
1228 return JVMTI_ERROR_NONE; | |
1229 } /* end GetThreadGroupInfo */ | |
1230 | |
1231 | |
1232 // thread_count_ptr - pre-checked for NULL | |
1233 // threads_ptr - pre-checked for NULL | |
1234 // group_count_ptr - pre-checked for NULL | |
1235 // groups_ptr - pre-checked for NULL | |
1236 jvmtiError | |
1237 JvmtiEnv::GetThreadGroupChildren(jthreadGroup group, jint* thread_count_ptr, jthread** threads_ptr, jint* group_count_ptr, jthreadGroup** groups_ptr) { | |
1238 JavaThread* current_thread = JavaThread::current(); | |
1239 oop group_obj = (oop) JNIHandles::resolve_external_guard(group); | |
1240 NULL_CHECK(group_obj, JVMTI_ERROR_INVALID_THREAD_GROUP); | |
1241 | |
1242 Handle *thread_objs = NULL; | |
1243 Handle *group_objs = NULL; | |
1244 int nthreads = 0; | |
1245 int ngroups = 0; | |
1246 int hidden_threads = 0; | |
1247 | |
1248 ResourceMark rm; | |
1249 HandleMark hm; | |
1250 | |
1251 Handle group_hdl(current_thread, group_obj); | |
1252 | |
1253 { MutexLocker mu(Threads_lock); | |
1254 | |
1255 nthreads = java_lang_ThreadGroup::nthreads(group_hdl()); | |
1256 ngroups = java_lang_ThreadGroup::ngroups(group_hdl()); | |
1257 | |
1258 if (nthreads > 0) { | |
1259 objArrayOop threads = java_lang_ThreadGroup::threads(group_hdl()); | |
1260 assert(nthreads <= threads->length(), "too many threads"); | |
1261 thread_objs = NEW_RESOURCE_ARRAY(Handle,nthreads); | |
1262 for (int i=0, j=0; i<nthreads; i++) { | |
1263 oop thread_obj = threads->obj_at(i); | |
1264 assert(thread_obj != NULL, "thread_obj is NULL"); | |
1265 JavaThread *javathread = java_lang_Thread::thread(thread_obj); | |
1266 // Filter out hidden java threads. | |
1267 if (javathread != NULL && javathread->is_hidden_from_external_view()) { | |
1268 hidden_threads++; | |
1269 continue; | |
1270 } | |
1271 thread_objs[j++] = Handle(current_thread, thread_obj); | |
1272 } | |
1273 nthreads -= hidden_threads; | |
1274 } | |
1275 if (ngroups > 0) { | |
1276 objArrayOop groups = java_lang_ThreadGroup::groups(group_hdl()); | |
1277 assert(ngroups <= groups->length(), "too many threads"); | |
1278 group_objs = NEW_RESOURCE_ARRAY(Handle,ngroups); | |
1279 for (int i=0; i<ngroups; i++) { | |
1280 oop group_obj = groups->obj_at(i); | |
1281 assert(group_obj != NULL, "group_obj != NULL"); | |
1282 group_objs[i] = Handle(current_thread, group_obj); | |
1283 } | |
1284 } | |
1285 } | |
1286 | |
1287 // have to make global handles outside of Threads_lock | |
1288 *group_count_ptr = ngroups; | |
1289 *thread_count_ptr = nthreads; | |
1290 *threads_ptr = new_jthreadArray(nthreads, thread_objs); | |
1291 *groups_ptr = new_jthreadGroupArray(ngroups, group_objs); | |
1292 if ((nthreads > 0) && (*threads_ptr == NULL)) { | |
1293 return JVMTI_ERROR_OUT_OF_MEMORY; | |
1294 } | |
1295 if ((ngroups > 0) && (*groups_ptr == NULL)) { | |
1296 return JVMTI_ERROR_OUT_OF_MEMORY; | |
1297 } | |
1298 | |
1299 return JVMTI_ERROR_NONE; | |
1300 } /* end GetThreadGroupChildren */ | |
1301 | |
1302 | |
1303 // | |
1304 // Stack Frame functions | |
1305 // | |
1306 | |
1307 // Threads_lock NOT held, java_thread not protected by lock | |
1308 // java_thread - pre-checked | |
1309 // max_frame_count - pre-checked to be greater than or equal to 0 | |
1310 // frame_buffer - pre-checked for NULL | |
1311 // count_ptr - pre-checked for NULL | |
1312 jvmtiError | |
1313 JvmtiEnv::GetStackTrace(JavaThread* java_thread, jint start_depth, jint max_frame_count, jvmtiFrameInfo* frame_buffer, jint* count_ptr) { | |
1314 jvmtiError err = JVMTI_ERROR_NONE; | |
1315 uint32_t debug_bits = 0; | |
1316 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
1317 err = get_stack_trace(java_thread, start_depth, max_frame_count, frame_buffer, count_ptr); | |
1318 } else { | |
1319 // JVMTI get stack trace at safepoint. Do not require target thread to | |
1320 // be suspended. | |
1321 VM_GetStackTrace op(this, java_thread, start_depth, max_frame_count, frame_buffer, count_ptr); | |
1322 VMThread::execute(&op); | |
1323 err = op.result(); | |
1324 } | |
1325 | |
1326 return err; | |
1327 } /* end GetStackTrace */ | |
1328 | |
1329 | |
1330 // max_frame_count - pre-checked to be greater than or equal to 0 | |
1331 // stack_info_ptr - pre-checked for NULL | |
1332 // thread_count_ptr - pre-checked for NULL | |
1333 jvmtiError | |
1334 JvmtiEnv::GetAllStackTraces(jint max_frame_count, jvmtiStackInfo** stack_info_ptr, jint* thread_count_ptr) { | |
1335 jvmtiError err = JVMTI_ERROR_NONE; | |
1336 JavaThread* calling_thread = JavaThread::current(); | |
1337 | |
1338 // JVMTI get stack traces at safepoint. | |
1339 VM_GetAllStackTraces op(this, calling_thread, max_frame_count); | |
1340 VMThread::execute(&op); | |
1341 *thread_count_ptr = op.final_thread_count(); | |
1342 *stack_info_ptr = op.stack_info(); | |
1343 err = op.result(); | |
1344 return err; | |
1345 } /* end GetAllStackTraces */ | |
1346 | |
1347 | |
1348 // thread_count - pre-checked to be greater than or equal to 0 | |
1349 // thread_list - pre-checked for NULL | |
1350 // max_frame_count - pre-checked to be greater than or equal to 0 | |
1351 // stack_info_ptr - pre-checked for NULL | |
1352 jvmtiError | |
1353 JvmtiEnv::GetThreadListStackTraces(jint thread_count, const jthread* thread_list, jint max_frame_count, jvmtiStackInfo** stack_info_ptr) { | |
1354 jvmtiError err = JVMTI_ERROR_NONE; | |
1355 // JVMTI get stack traces at safepoint. | |
1356 VM_GetThreadListStackTraces op(this, thread_count, thread_list, max_frame_count); | |
1357 VMThread::execute(&op); | |
1358 err = op.result(); | |
1359 if (err == JVMTI_ERROR_NONE) { | |
1360 *stack_info_ptr = op.stack_info(); | |
1361 } | |
1362 return err; | |
1363 } /* end GetThreadListStackTraces */ | |
1364 | |
1365 | |
1366 // Threads_lock NOT held, java_thread not protected by lock | |
1367 // java_thread - pre-checked | |
1368 // count_ptr - pre-checked for NULL | |
1369 jvmtiError | |
1370 JvmtiEnv::GetFrameCount(JavaThread* java_thread, jint* count_ptr) { | |
1371 jvmtiError err = JVMTI_ERROR_NONE; | |
1372 | |
1373 // retrieve or create JvmtiThreadState. | |
1374 JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread); | |
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1375 if (state == NULL) { |
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1376 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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1377 } |
0 | 1378 uint32_t debug_bits = 0; |
1379 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
1380 err = get_frame_count(state, count_ptr); | |
1381 } else { | |
1382 // get java stack frame count at safepoint. | |
1383 VM_GetFrameCount op(this, state, count_ptr); | |
1384 VMThread::execute(&op); | |
1385 err = op.result(); | |
1386 } | |
1387 return err; | |
1388 } /* end GetFrameCount */ | |
1389 | |
1390 | |
1391 // Threads_lock NOT held, java_thread not protected by lock | |
1392 // java_thread - pre-checked | |
1393 jvmtiError | |
1394 JvmtiEnv::PopFrame(JavaThread* java_thread) { | |
1395 JavaThread* current_thread = JavaThread::current(); | |
1396 HandleMark hm(current_thread); | |
1397 uint32_t debug_bits = 0; | |
1398 | |
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1399 // retrieve or create the state |
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1400 JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread); |
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1401 if (state == NULL) { |
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1402 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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1403 } |
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1404 |
0 | 1405 // Check if java_thread is fully suspended |
1406 if (!is_thread_fully_suspended(java_thread, true /* wait for suspend completion */, &debug_bits)) { | |
1407 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
1408 } | |
1409 // Check to see if a PopFrame was already in progress | |
1410 if (java_thread->popframe_condition() != JavaThread::popframe_inactive) { | |
1411 // Probably possible for JVMTI clients to trigger this, but the | |
1412 // JPDA backend shouldn't allow this to happen | |
1413 return JVMTI_ERROR_INTERNAL; | |
1414 } | |
1415 | |
1416 { | |
1417 // Was workaround bug | |
1418 // 4812902: popFrame hangs if the method is waiting at a synchronize | |
1419 // Catch this condition and return an error to avoid hanging. | |
1420 // Now JVMTI spec allows an implementation to bail out with an opaque frame error. | |
1421 OSThread* osThread = java_thread->osthread(); | |
1422 if (osThread->get_state() == MONITOR_WAIT) { | |
1423 return JVMTI_ERROR_OPAQUE_FRAME; | |
1424 } | |
1425 } | |
1426 | |
1427 { | |
1428 ResourceMark rm(current_thread); | |
1429 // Check if there are more than one Java frame in this thread, that the top two frames | |
1430 // are Java (not native) frames, and that there is no intervening VM frame | |
1431 int frame_count = 0; | |
1432 bool is_interpreted[2]; | |
1433 intptr_t *frame_sp[2]; | |
1434 // The 2-nd arg of constructor is needed to stop iterating at java entry frame. | |
1435 for (vframeStream vfs(java_thread, true); !vfs.at_end(); vfs.next()) { | |
1436 methodHandle mh(current_thread, vfs.method()); | |
1437 if (mh->is_native()) return(JVMTI_ERROR_OPAQUE_FRAME); | |
1438 is_interpreted[frame_count] = vfs.is_interpreted_frame(); | |
1439 frame_sp[frame_count] = vfs.frame_id(); | |
1440 if (++frame_count > 1) break; | |
1441 } | |
1442 if (frame_count < 2) { | |
1443 // We haven't found two adjacent non-native Java frames on the top. | |
1444 // There can be two situations here: | |
1445 // 1. There are no more java frames | |
1446 // 2. Two top java frames are separated by non-java native frames | |
1447 if(vframeFor(java_thread, 1) == NULL) { | |
1448 return JVMTI_ERROR_NO_MORE_FRAMES; | |
1449 } else { | |
1450 // Intervening non-java native or VM frames separate java frames. | |
1451 // Current implementation does not support this. See bug #5031735. | |
1452 // In theory it is possible to pop frames in such cases. | |
1453 return JVMTI_ERROR_OPAQUE_FRAME; | |
1454 } | |
1455 } | |
1456 | |
1457 // If any of the top 2 frames is a compiled one, need to deoptimize it | |
1458 for (int i = 0; i < 2; i++) { | |
1459 if (!is_interpreted[i]) { | |
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1460 Deoptimization::deoptimize_frame(java_thread, frame_sp[i], Deoptimization::Reason_constraint); |
0 | 1461 } |
1462 } | |
1463 | |
1464 // Update the thread state to reflect that the top frame is popped | |
1465 // so that cur_stack_depth is maintained properly and all frameIDs | |
1466 // are invalidated. | |
1467 // The current frame will be popped later when the suspended thread | |
1468 // is resumed and right before returning from VM to Java. | |
1469 // (see call_VM_base() in assembler_<cpu>.cpp). | |
1470 | |
1471 // It's fine to update the thread state here because no JVMTI events | |
1472 // shall be posted for this PopFrame. | |
1473 | |
1474 state->update_for_pop_top_frame(); | |
1475 java_thread->set_popframe_condition(JavaThread::popframe_pending_bit); | |
1476 // Set pending step flag for this popframe and it is cleared when next | |
1477 // step event is posted. | |
1478 state->set_pending_step_for_popframe(); | |
1479 } | |
1480 | |
1481 return JVMTI_ERROR_NONE; | |
1482 } /* end PopFrame */ | |
1483 | |
1484 | |
1485 // Threads_lock NOT held, java_thread not protected by lock | |
1486 // java_thread - pre-checked | |
1487 // java_thread - unchecked | |
1488 // depth - pre-checked as non-negative | |
1489 // method_ptr - pre-checked for NULL | |
1490 // location_ptr - pre-checked for NULL | |
1491 jvmtiError | |
1492 JvmtiEnv::GetFrameLocation(JavaThread* java_thread, jint depth, jmethodID* method_ptr, jlocation* location_ptr) { | |
1493 jvmtiError err = JVMTI_ERROR_NONE; | |
1494 uint32_t debug_bits = 0; | |
1495 | |
1496 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
1497 err = get_frame_location(java_thread, depth, method_ptr, location_ptr); | |
1498 } else { | |
1499 // JVMTI get java stack frame location at safepoint. | |
1500 VM_GetFrameLocation op(this, java_thread, depth, method_ptr, location_ptr); | |
1501 VMThread::execute(&op); | |
1502 err = op.result(); | |
1503 } | |
1504 return err; | |
1505 } /* end GetFrameLocation */ | |
1506 | |
1507 | |
1508 // Threads_lock NOT held, java_thread not protected by lock | |
1509 // java_thread - pre-checked | |
1510 // java_thread - unchecked | |
1511 // depth - pre-checked as non-negative | |
1512 jvmtiError | |
1513 JvmtiEnv::NotifyFramePop(JavaThread* java_thread, jint depth) { | |
1514 ResourceMark rm; | |
1515 uint32_t debug_bits = 0; | |
1516 | |
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1517 JvmtiThreadState *state = JvmtiThreadState::state_for(java_thread); |
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1518 if (state == NULL) { |
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1519 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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1520 } |
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1521 |
0 | 1522 if (!JvmtiEnv::is_thread_fully_suspended(java_thread, true, &debug_bits)) { |
1523 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
1524 } | |
1525 | |
1526 if (TraceJVMTICalls) { | |
1527 JvmtiSuspendControl::print(); | |
1528 } | |
1529 | |
1530 vframe *vf = vframeFor(java_thread, depth); | |
1531 if (vf == NULL) { | |
1532 return JVMTI_ERROR_NO_MORE_FRAMES; | |
1533 } | |
1534 | |
1535 if (!vf->is_java_frame() || ((javaVFrame*) vf)->method()->is_native()) { | |
1536 return JVMTI_ERROR_OPAQUE_FRAME; | |
1537 } | |
1538 | |
1539 assert(vf->frame_pointer() != NULL, "frame pointer mustn't be NULL"); | |
1540 | |
1541 int frame_number = state->count_frames() - depth; | |
1542 state->env_thread_state(this)->set_frame_pop(frame_number); | |
1543 | |
1544 return JVMTI_ERROR_NONE; | |
1545 } /* end NotifyFramePop */ | |
1546 | |
1547 | |
1548 // | |
1549 // Force Early Return functions | |
1550 // | |
1551 | |
1552 // Threads_lock NOT held, java_thread not protected by lock | |
1553 // java_thread - pre-checked | |
1554 jvmtiError | |
1555 JvmtiEnv::ForceEarlyReturnObject(JavaThread* java_thread, jobject value) { | |
1556 jvalue val; | |
1557 val.l = value; | |
1558 return force_early_return(java_thread, val, atos); | |
1559 } /* end ForceEarlyReturnObject */ | |
1560 | |
1561 | |
1562 // Threads_lock NOT held, java_thread not protected by lock | |
1563 // java_thread - pre-checked | |
1564 jvmtiError | |
1565 JvmtiEnv::ForceEarlyReturnInt(JavaThread* java_thread, jint value) { | |
1566 jvalue val; | |
1567 val.i = value; | |
1568 return force_early_return(java_thread, val, itos); | |
1569 } /* end ForceEarlyReturnInt */ | |
1570 | |
1571 | |
1572 // Threads_lock NOT held, java_thread not protected by lock | |
1573 // java_thread - pre-checked | |
1574 jvmtiError | |
1575 JvmtiEnv::ForceEarlyReturnLong(JavaThread* java_thread, jlong value) { | |
1576 jvalue val; | |
1577 val.j = value; | |
1578 return force_early_return(java_thread, val, ltos); | |
1579 } /* end ForceEarlyReturnLong */ | |
1580 | |
1581 | |
1582 // Threads_lock NOT held, java_thread not protected by lock | |
1583 // java_thread - pre-checked | |
1584 jvmtiError | |
1585 JvmtiEnv::ForceEarlyReturnFloat(JavaThread* java_thread, jfloat value) { | |
1586 jvalue val; | |
1587 val.f = value; | |
1588 return force_early_return(java_thread, val, ftos); | |
1589 } /* end ForceEarlyReturnFloat */ | |
1590 | |
1591 | |
1592 // Threads_lock NOT held, java_thread not protected by lock | |
1593 // java_thread - pre-checked | |
1594 jvmtiError | |
1595 JvmtiEnv::ForceEarlyReturnDouble(JavaThread* java_thread, jdouble value) { | |
1596 jvalue val; | |
1597 val.d = value; | |
1598 return force_early_return(java_thread, val, dtos); | |
1599 } /* end ForceEarlyReturnDouble */ | |
1600 | |
1601 | |
1602 // Threads_lock NOT held, java_thread not protected by lock | |
1603 // java_thread - pre-checked | |
1604 jvmtiError | |
1605 JvmtiEnv::ForceEarlyReturnVoid(JavaThread* java_thread) { | |
1606 jvalue val; | |
1607 val.j = 0L; | |
1608 return force_early_return(java_thread, val, vtos); | |
1609 } /* end ForceEarlyReturnVoid */ | |
1610 | |
1611 | |
1612 // | |
1613 // Heap functions | |
1614 // | |
1615 | |
1616 // klass - NULL is a valid value, must be checked | |
1617 // initial_object - NULL is a valid value, must be checked | |
1618 // callbacks - pre-checked for NULL | |
1619 // user_data - NULL is a valid value, must be checked | |
1620 jvmtiError | |
1621 JvmtiEnv::FollowReferences(jint heap_filter, jclass klass, jobject initial_object, const jvmtiHeapCallbacks* callbacks, const void* user_data) { | |
1622 // check klass if provided | |
1623 klassOop k_oop = NULL; | |
1624 if (klass != NULL) { | |
1625 oop k_mirror = JNIHandles::resolve_external_guard(klass); | |
1626 if (k_mirror == NULL) { | |
1627 return JVMTI_ERROR_INVALID_CLASS; | |
1628 } | |
1629 if (java_lang_Class::is_primitive(k_mirror)) { | |
1630 return JVMTI_ERROR_NONE; | |
1631 } | |
1632 k_oop = java_lang_Class::as_klassOop(k_mirror); | |
1633 if (k_oop == NULL) { | |
1634 return JVMTI_ERROR_INVALID_CLASS; | |
1635 } | |
1636 } | |
1637 | |
1638 Thread *thread = Thread::current(); | |
1639 HandleMark hm(thread); | |
1640 KlassHandle kh (thread, k_oop); | |
1641 | |
1642 TraceTime t("FollowReferences", TraceJVMTIObjectTagging); | |
1643 JvmtiTagMap::tag_map_for(this)->follow_references(heap_filter, kh, initial_object, callbacks, user_data); | |
1644 return JVMTI_ERROR_NONE; | |
1645 } /* end FollowReferences */ | |
1646 | |
1647 | |
1648 // klass - NULL is a valid value, must be checked | |
1649 // callbacks - pre-checked for NULL | |
1650 // user_data - NULL is a valid value, must be checked | |
1651 jvmtiError | |
1652 JvmtiEnv::IterateThroughHeap(jint heap_filter, jclass klass, const jvmtiHeapCallbacks* callbacks, const void* user_data) { | |
1653 // check klass if provided | |
1654 klassOop k_oop = NULL; | |
1655 if (klass != NULL) { | |
1656 oop k_mirror = JNIHandles::resolve_external_guard(klass); | |
1657 if (k_mirror == NULL) { | |
1658 return JVMTI_ERROR_INVALID_CLASS; | |
1659 } | |
1660 if (java_lang_Class::is_primitive(k_mirror)) { | |
1661 return JVMTI_ERROR_NONE; | |
1662 } | |
1663 k_oop = java_lang_Class::as_klassOop(k_mirror); | |
1664 if (k_oop == NULL) { | |
1665 return JVMTI_ERROR_INVALID_CLASS; | |
1666 } | |
1667 } | |
1668 | |
1669 Thread *thread = Thread::current(); | |
1670 HandleMark hm(thread); | |
1671 KlassHandle kh (thread, k_oop); | |
1672 | |
1673 TraceTime t("IterateThroughHeap", TraceJVMTIObjectTagging); | |
1674 JvmtiTagMap::tag_map_for(this)->iterate_through_heap(heap_filter, kh, callbacks, user_data); | |
1675 return JVMTI_ERROR_NONE; | |
1676 } /* end IterateThroughHeap */ | |
1677 | |
1678 | |
1679 // tag_ptr - pre-checked for NULL | |
1680 jvmtiError | |
1681 JvmtiEnv::GetTag(jobject object, jlong* tag_ptr) { | |
1682 oop o = JNIHandles::resolve_external_guard(object); | |
1683 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
1684 *tag_ptr = JvmtiTagMap::tag_map_for(this)->get_tag(object); | |
1685 return JVMTI_ERROR_NONE; | |
1686 } /* end GetTag */ | |
1687 | |
1688 | |
1689 jvmtiError | |
1690 JvmtiEnv::SetTag(jobject object, jlong tag) { | |
1691 oop o = JNIHandles::resolve_external_guard(object); | |
1692 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
1693 JvmtiTagMap::tag_map_for(this)->set_tag(object, tag); | |
1694 return JVMTI_ERROR_NONE; | |
1695 } /* end SetTag */ | |
1696 | |
1697 | |
1698 // tag_count - pre-checked to be greater than or equal to 0 | |
1699 // tags - pre-checked for NULL | |
1700 // count_ptr - pre-checked for NULL | |
1701 // object_result_ptr - NULL is a valid value, must be checked | |
1702 // tag_result_ptr - NULL is a valid value, must be checked | |
1703 jvmtiError | |
1704 JvmtiEnv::GetObjectsWithTags(jint tag_count, const jlong* tags, jint* count_ptr, jobject** object_result_ptr, jlong** tag_result_ptr) { | |
1705 TraceTime t("GetObjectsWithTags", TraceJVMTIObjectTagging); | |
1706 return JvmtiTagMap::tag_map_for(this)->get_objects_with_tags((jlong*)tags, tag_count, count_ptr, object_result_ptr, tag_result_ptr); | |
1707 } /* end GetObjectsWithTags */ | |
1708 | |
1709 | |
1710 jvmtiError | |
1711 JvmtiEnv::ForceGarbageCollection() { | |
1712 Universe::heap()->collect(GCCause::_jvmti_force_gc); | |
1713 return JVMTI_ERROR_NONE; | |
1714 } /* end ForceGarbageCollection */ | |
1715 | |
1716 | |
1717 // | |
1718 // Heap (1.0) functions | |
1719 // | |
1720 | |
1721 // object_reference_callback - pre-checked for NULL | |
1722 // user_data - NULL is a valid value, must be checked | |
1723 jvmtiError | |
1724 JvmtiEnv::IterateOverObjectsReachableFromObject(jobject object, jvmtiObjectReferenceCallback object_reference_callback, const void* user_data) { | |
1725 oop o = JNIHandles::resolve_external_guard(object); | |
1726 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
1727 JvmtiTagMap::tag_map_for(this)->iterate_over_objects_reachable_from_object(object, object_reference_callback, user_data); | |
1728 return JVMTI_ERROR_NONE; | |
1729 } /* end IterateOverObjectsReachableFromObject */ | |
1730 | |
1731 | |
1732 // heap_root_callback - NULL is a valid value, must be checked | |
1733 // stack_ref_callback - NULL is a valid value, must be checked | |
1734 // object_ref_callback - NULL is a valid value, must be checked | |
1735 // user_data - NULL is a valid value, must be checked | |
1736 jvmtiError | |
1737 JvmtiEnv::IterateOverReachableObjects(jvmtiHeapRootCallback heap_root_callback, jvmtiStackReferenceCallback stack_ref_callback, jvmtiObjectReferenceCallback object_ref_callback, const void* user_data) { | |
1738 TraceTime t("IterateOverReachableObjects", TraceJVMTIObjectTagging); | |
1739 JvmtiTagMap::tag_map_for(this)->iterate_over_reachable_objects(heap_root_callback, stack_ref_callback, object_ref_callback, user_data); | |
1740 return JVMTI_ERROR_NONE; | |
1741 } /* end IterateOverReachableObjects */ | |
1742 | |
1743 | |
1744 // heap_object_callback - pre-checked for NULL | |
1745 // user_data - NULL is a valid value, must be checked | |
1746 jvmtiError | |
1747 JvmtiEnv::IterateOverHeap(jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) { | |
1748 TraceTime t("IterateOverHeap", TraceJVMTIObjectTagging); | |
1749 Thread *thread = Thread::current(); | |
1750 HandleMark hm(thread); | |
1751 JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, KlassHandle(), heap_object_callback, user_data); | |
1752 return JVMTI_ERROR_NONE; | |
1753 } /* end IterateOverHeap */ | |
1754 | |
1755 | |
1756 // k_mirror - may be primitive, this must be checked | |
1757 // heap_object_callback - pre-checked for NULL | |
1758 // user_data - NULL is a valid value, must be checked | |
1759 jvmtiError | |
1760 JvmtiEnv::IterateOverInstancesOfClass(oop k_mirror, jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) { | |
1761 if (java_lang_Class::is_primitive(k_mirror)) { | |
1762 // DO PRIMITIVE CLASS PROCESSING | |
1763 return JVMTI_ERROR_NONE; | |
1764 } | |
1765 klassOop k_oop = java_lang_Class::as_klassOop(k_mirror); | |
1766 if (k_oop == NULL) { | |
1767 return JVMTI_ERROR_INVALID_CLASS; | |
1768 } | |
1769 Thread *thread = Thread::current(); | |
1770 HandleMark hm(thread); | |
1771 KlassHandle klass (thread, k_oop); | |
1772 TraceTime t("IterateOverInstancesOfClass", TraceJVMTIObjectTagging); | |
1773 JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, klass, heap_object_callback, user_data); | |
1774 return JVMTI_ERROR_NONE; | |
1775 } /* end IterateOverInstancesOfClass */ | |
1776 | |
1777 | |
1778 // | |
1779 // Local Variable functions | |
1780 // | |
1781 | |
1782 // Threads_lock NOT held, java_thread not protected by lock | |
1783 // java_thread - pre-checked | |
1784 // java_thread - unchecked | |
1785 // depth - pre-checked as non-negative | |
1786 // value_ptr - pre-checked for NULL | |
1787 jvmtiError | |
1788 JvmtiEnv::GetLocalObject(JavaThread* java_thread, jint depth, jint slot, jobject* value_ptr) { | |
1789 JavaThread* current_thread = JavaThread::current(); | |
1790 // rm object is created to clean up the javaVFrame created in | |
1791 // doit_prologue(), but after doit() is finished with it. | |
1792 ResourceMark rm(current_thread); | |
1793 | |
1794 VM_GetOrSetLocal op(java_thread, current_thread, depth, slot); | |
1795 VMThread::execute(&op); | |
1796 jvmtiError err = op.result(); | |
1797 if (err != JVMTI_ERROR_NONE) { | |
1798 return err; | |
1799 } else { | |
1800 *value_ptr = op.value().l; | |
1801 return JVMTI_ERROR_NONE; | |
1802 } | |
1803 } /* end GetLocalObject */ | |
1804 | |
2019 | 1805 // Threads_lock NOT held, java_thread not protected by lock |
1806 // java_thread - pre-checked | |
1807 // java_thread - unchecked | |
1808 // depth - pre-checked as non-negative | |
1809 // value - pre-checked for NULL | |
1810 jvmtiError | |
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1811 JvmtiEnv::GetLocalInstance(JavaThread* java_thread, jint depth, jobject* value_ptr){ |
2019 | 1812 JavaThread* current_thread = JavaThread::current(); |
1813 // rm object is created to clean up the javaVFrame created in | |
1814 // doit_prologue(), but after doit() is finished with it. | |
1815 ResourceMark rm(current_thread); | |
1816 | |
1817 VM_GetReceiver op(java_thread, current_thread, depth); | |
1818 VMThread::execute(&op); | |
1819 jvmtiError err = op.result(); | |
1820 if (err != JVMTI_ERROR_NONE) { | |
1821 return err; | |
1822 } else { | |
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1823 *value_ptr = op.value().l; |
2019 | 1824 return JVMTI_ERROR_NONE; |
1825 } | |
1826 } /* end GetLocalInstance */ | |
1827 | |
0 | 1828 |
1829 // Threads_lock NOT held, java_thread not protected by lock | |
1830 // java_thread - pre-checked | |
1831 // java_thread - unchecked | |
1832 // depth - pre-checked as non-negative | |
1833 // value_ptr - pre-checked for NULL | |
1834 jvmtiError | |
1835 JvmtiEnv::GetLocalInt(JavaThread* java_thread, jint depth, jint slot, jint* value_ptr) { | |
1836 // rm object is created to clean up the javaVFrame created in | |
1837 // doit_prologue(), but after doit() is finished with it. | |
1838 ResourceMark rm; | |
1839 | |
1840 VM_GetOrSetLocal op(java_thread, depth, slot, T_INT); | |
1841 VMThread::execute(&op); | |
1842 *value_ptr = op.value().i; | |
1843 return op.result(); | |
1844 } /* end GetLocalInt */ | |
1845 | |
1846 | |
1847 // Threads_lock NOT held, java_thread not protected by lock | |
1848 // java_thread - pre-checked | |
1849 // java_thread - unchecked | |
1850 // depth - pre-checked as non-negative | |
1851 // value_ptr - pre-checked for NULL | |
1852 jvmtiError | |
1853 JvmtiEnv::GetLocalLong(JavaThread* java_thread, jint depth, jint slot, jlong* value_ptr) { | |
1854 // rm object is created to clean up the javaVFrame created in | |
1855 // doit_prologue(), but after doit() is finished with it. | |
1856 ResourceMark rm; | |
1857 | |
1858 VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG); | |
1859 VMThread::execute(&op); | |
1860 *value_ptr = op.value().j; | |
1861 return op.result(); | |
1862 } /* end GetLocalLong */ | |
1863 | |
1864 | |
1865 // Threads_lock NOT held, java_thread not protected by lock | |
1866 // java_thread - pre-checked | |
1867 // java_thread - unchecked | |
1868 // depth - pre-checked as non-negative | |
1869 // value_ptr - pre-checked for NULL | |
1870 jvmtiError | |
1871 JvmtiEnv::GetLocalFloat(JavaThread* java_thread, jint depth, jint slot, jfloat* value_ptr) { | |
1872 // rm object is created to clean up the javaVFrame created in | |
1873 // doit_prologue(), but after doit() is finished with it. | |
1874 ResourceMark rm; | |
1875 | |
1876 VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT); | |
1877 VMThread::execute(&op); | |
1878 *value_ptr = op.value().f; | |
1879 return op.result(); | |
1880 } /* end GetLocalFloat */ | |
1881 | |
1882 | |
1883 // Threads_lock NOT held, java_thread not protected by lock | |
1884 // java_thread - pre-checked | |
1885 // java_thread - unchecked | |
1886 // depth - pre-checked as non-negative | |
1887 // value_ptr - pre-checked for NULL | |
1888 jvmtiError | |
1889 JvmtiEnv::GetLocalDouble(JavaThread* java_thread, jint depth, jint slot, jdouble* value_ptr) { | |
1890 // rm object is created to clean up the javaVFrame created in | |
1891 // doit_prologue(), but after doit() is finished with it. | |
1892 ResourceMark rm; | |
1893 | |
1894 VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE); | |
1895 VMThread::execute(&op); | |
1896 *value_ptr = op.value().d; | |
1897 return op.result(); | |
1898 } /* end GetLocalDouble */ | |
1899 | |
1900 | |
1901 // Threads_lock NOT held, java_thread not protected by lock | |
1902 // java_thread - pre-checked | |
1903 // java_thread - unchecked | |
1904 // depth - pre-checked as non-negative | |
1905 jvmtiError | |
1906 JvmtiEnv::SetLocalObject(JavaThread* java_thread, jint depth, jint slot, jobject value) { | |
1907 // rm object is created to clean up the javaVFrame created in | |
1908 // doit_prologue(), but after doit() is finished with it. | |
1909 ResourceMark rm; | |
1910 jvalue val; | |
1911 val.l = value; | |
1912 VM_GetOrSetLocal op(java_thread, depth, slot, T_OBJECT, val); | |
1913 VMThread::execute(&op); | |
1914 return op.result(); | |
1915 } /* end SetLocalObject */ | |
1916 | |
1917 | |
1918 // Threads_lock NOT held, java_thread not protected by lock | |
1919 // java_thread - pre-checked | |
1920 // java_thread - unchecked | |
1921 // depth - pre-checked as non-negative | |
1922 jvmtiError | |
1923 JvmtiEnv::SetLocalInt(JavaThread* java_thread, jint depth, jint slot, jint value) { | |
1924 // rm object is created to clean up the javaVFrame created in | |
1925 // doit_prologue(), but after doit() is finished with it. | |
1926 ResourceMark rm; | |
1927 jvalue val; | |
1928 val.i = value; | |
1929 VM_GetOrSetLocal op(java_thread, depth, slot, T_INT, val); | |
1930 VMThread::execute(&op); | |
1931 return op.result(); | |
1932 } /* end SetLocalInt */ | |
1933 | |
1934 | |
1935 // Threads_lock NOT held, java_thread not protected by lock | |
1936 // java_thread - pre-checked | |
1937 // java_thread - unchecked | |
1938 // depth - pre-checked as non-negative | |
1939 jvmtiError | |
1940 JvmtiEnv::SetLocalLong(JavaThread* java_thread, jint depth, jint slot, jlong value) { | |
1941 // rm object is created to clean up the javaVFrame created in | |
1942 // doit_prologue(), but after doit() is finished with it. | |
1943 ResourceMark rm; | |
1944 jvalue val; | |
1945 val.j = value; | |
1946 VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG, val); | |
1947 VMThread::execute(&op); | |
1948 return op.result(); | |
1949 } /* end SetLocalLong */ | |
1950 | |
1951 | |
1952 // Threads_lock NOT held, java_thread not protected by lock | |
1953 // java_thread - pre-checked | |
1954 // java_thread - unchecked | |
1955 // depth - pre-checked as non-negative | |
1956 jvmtiError | |
1957 JvmtiEnv::SetLocalFloat(JavaThread* java_thread, jint depth, jint slot, jfloat value) { | |
1958 // rm object is created to clean up the javaVFrame created in | |
1959 // doit_prologue(), but after doit() is finished with it. | |
1960 ResourceMark rm; | |
1961 jvalue val; | |
1962 val.f = value; | |
1963 VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT, val); | |
1964 VMThread::execute(&op); | |
1965 return op.result(); | |
1966 } /* end SetLocalFloat */ | |
1967 | |
1968 | |
1969 // Threads_lock NOT held, java_thread not protected by lock | |
1970 // java_thread - pre-checked | |
1971 // java_thread - unchecked | |
1972 // depth - pre-checked as non-negative | |
1973 jvmtiError | |
1974 JvmtiEnv::SetLocalDouble(JavaThread* java_thread, jint depth, jint slot, jdouble value) { | |
1975 // rm object is created to clean up the javaVFrame created in | |
1976 // doit_prologue(), but after doit() is finished with it. | |
1977 ResourceMark rm; | |
1978 jvalue val; | |
1979 val.d = value; | |
1980 VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE, val); | |
1981 VMThread::execute(&op); | |
1982 return op.result(); | |
1983 } /* end SetLocalDouble */ | |
1984 | |
1985 | |
1986 // | |
1987 // Breakpoint functions | |
1988 // | |
1989 | |
1990 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
1991 jvmtiError | |
1992 JvmtiEnv::SetBreakpoint(methodOop method_oop, jlocation location) { | |
1993 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
1994 if (location < 0) { // simple invalid location check first | |
1995 return JVMTI_ERROR_INVALID_LOCATION; | |
1996 } | |
1997 // verify that the breakpoint is not past the end of the method | |
1998 if (location >= (jlocation) method_oop->code_size()) { | |
1999 return JVMTI_ERROR_INVALID_LOCATION; | |
2000 } | |
2001 | |
2002 ResourceMark rm; | |
2003 JvmtiBreakpoint bp(method_oop, location); | |
2004 JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints(); | |
2005 if (jvmti_breakpoints.set(bp) == JVMTI_ERROR_DUPLICATE) | |
2006 return JVMTI_ERROR_DUPLICATE; | |
2007 | |
2008 if (TraceJVMTICalls) { | |
2009 jvmti_breakpoints.print(); | |
2010 } | |
2011 | |
2012 return JVMTI_ERROR_NONE; | |
2013 } /* end SetBreakpoint */ | |
2014 | |
2015 | |
2016 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2017 jvmtiError | |
2018 JvmtiEnv::ClearBreakpoint(methodOop method_oop, jlocation location) { | |
2019 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2020 | |
2021 if (location < 0) { // simple invalid location check first | |
2022 return JVMTI_ERROR_INVALID_LOCATION; | |
2023 } | |
2024 | |
2025 // verify that the breakpoint is not past the end of the method | |
2026 if (location >= (jlocation) method_oop->code_size()) { | |
2027 return JVMTI_ERROR_INVALID_LOCATION; | |
2028 } | |
2029 | |
2030 JvmtiBreakpoint bp(method_oop, location); | |
2031 | |
2032 JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints(); | |
2033 if (jvmti_breakpoints.clear(bp) == JVMTI_ERROR_NOT_FOUND) | |
2034 return JVMTI_ERROR_NOT_FOUND; | |
2035 | |
2036 if (TraceJVMTICalls) { | |
2037 jvmti_breakpoints.print(); | |
2038 } | |
2039 | |
2040 return JVMTI_ERROR_NONE; | |
2041 } /* end ClearBreakpoint */ | |
2042 | |
2043 | |
2044 // | |
2045 // Watched Field functions | |
2046 // | |
2047 | |
2048 jvmtiError | |
2049 JvmtiEnv::SetFieldAccessWatch(fieldDescriptor* fdesc_ptr) { | |
2050 // make sure we haven't set this watch before | |
2051 if (fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_DUPLICATE; | |
2052 fdesc_ptr->set_is_field_access_watched(true); | |
2053 | |
2054 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, true); | |
2055 | |
2056 return JVMTI_ERROR_NONE; | |
2057 } /* end SetFieldAccessWatch */ | |
2058 | |
2059 | |
2060 jvmtiError | |
2061 JvmtiEnv::ClearFieldAccessWatch(fieldDescriptor* fdesc_ptr) { | |
2062 // make sure we have a watch to clear | |
2063 if (!fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_NOT_FOUND; | |
2064 fdesc_ptr->set_is_field_access_watched(false); | |
2065 | |
2066 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, false); | |
2067 | |
2068 return JVMTI_ERROR_NONE; | |
2069 } /* end ClearFieldAccessWatch */ | |
2070 | |
2071 | |
2072 jvmtiError | |
2073 JvmtiEnv::SetFieldModificationWatch(fieldDescriptor* fdesc_ptr) { | |
2074 // make sure we haven't set this watch before | |
2075 if (fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_DUPLICATE; | |
2076 fdesc_ptr->set_is_field_modification_watched(true); | |
2077 | |
2078 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, true); | |
2079 | |
2080 return JVMTI_ERROR_NONE; | |
2081 } /* end SetFieldModificationWatch */ | |
2082 | |
2083 | |
2084 jvmtiError | |
2085 JvmtiEnv::ClearFieldModificationWatch(fieldDescriptor* fdesc_ptr) { | |
2086 // make sure we have a watch to clear | |
2087 if (!fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_NOT_FOUND; | |
2088 fdesc_ptr->set_is_field_modification_watched(false); | |
2089 | |
2090 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, false); | |
2091 | |
2092 return JVMTI_ERROR_NONE; | |
2093 } /* end ClearFieldModificationWatch */ | |
2094 | |
2095 // | |
2096 // Class functions | |
2097 // | |
2098 | |
2099 | |
2100 // k_mirror - may be primitive, this must be checked | |
2101 // signature_ptr - NULL is a valid value, must be checked | |
2102 // generic_ptr - NULL is a valid value, must be checked | |
2103 jvmtiError | |
2104 JvmtiEnv::GetClassSignature(oop k_mirror, char** signature_ptr, char** generic_ptr) { | |
2105 ResourceMark rm; | |
2106 bool isPrimitive = java_lang_Class::is_primitive(k_mirror); | |
2107 klassOop k = NULL; | |
2108 if (!isPrimitive) { | |
2109 k = java_lang_Class::as_klassOop(k_mirror); | |
2110 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
2111 } | |
2112 if (signature_ptr != NULL) { | |
2113 char* result = NULL; | |
2114 if (isPrimitive) { | |
2115 char tchar = type2char(java_lang_Class::primitive_type(k_mirror)); | |
2116 result = (char*) jvmtiMalloc(2); | |
2117 result[0] = tchar; | |
2118 result[1] = '\0'; | |
2119 } else { | |
2120 const char* class_sig = Klass::cast(k)->signature_name(); | |
2121 result = (char *) jvmtiMalloc(strlen(class_sig)+1); | |
2122 strcpy(result, class_sig); | |
2123 } | |
2124 *signature_ptr = result; | |
2125 } | |
2126 if (generic_ptr != NULL) { | |
2127 *generic_ptr = NULL; | |
2128 if (!isPrimitive && Klass::cast(k)->oop_is_instance()) { | |
2177
3582bf76420e
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|
2129 Symbol* soo = instanceKlass::cast(k)->generic_signature(); |
0 | 2130 if (soo != NULL) { |
2131 const char *gen_sig = soo->as_C_string(); | |
2132 if (gen_sig != NULL) { | |
2133 char* gen_result; | |
2134 jvmtiError err = allocate(strlen(gen_sig) + 1, | |
2135 (unsigned char **)&gen_result); | |
2136 if (err != JVMTI_ERROR_NONE) { | |
2137 return err; | |
2138 } | |
2139 strcpy(gen_result, gen_sig); | |
2140 *generic_ptr = gen_result; | |
2141 } | |
2142 } | |
2143 } | |
2144 } | |
2145 return JVMTI_ERROR_NONE; | |
2146 } /* end GetClassSignature */ | |
2147 | |
2148 | |
2149 // k_mirror - may be primitive, this must be checked | |
2150 // status_ptr - pre-checked for NULL | |
2151 jvmtiError | |
2152 JvmtiEnv::GetClassStatus(oop k_mirror, jint* status_ptr) { | |
2153 jint result = 0; | |
2154 if (java_lang_Class::is_primitive(k_mirror)) { | |
2155 result |= JVMTI_CLASS_STATUS_PRIMITIVE; | |
2156 } else { | |
2157 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2158 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
2159 result = Klass::cast(k)->jvmti_class_status(); | |
2160 } | |
2161 *status_ptr = result; | |
2162 | |
2163 return JVMTI_ERROR_NONE; | |
2164 } /* end GetClassStatus */ | |
2165 | |
2166 | |
2167 // k_mirror - may be primitive, this must be checked | |
2168 // source_name_ptr - pre-checked for NULL | |
2169 jvmtiError | |
2170 JvmtiEnv::GetSourceFileName(oop k_mirror, char** source_name_ptr) { | |
2171 if (java_lang_Class::is_primitive(k_mirror)) { | |
2172 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2173 } | |
2174 klassOop k_klass = java_lang_Class::as_klassOop(k_mirror); | |
2175 NULL_CHECK(k_klass, JVMTI_ERROR_INVALID_CLASS); | |
2176 | |
2177 if (!Klass::cast(k_klass)->oop_is_instance()) { | |
2178 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2179 } | |
2180 | |
2177
3582bf76420e
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diff
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|
2181 Symbol* sfnOop = instanceKlass::cast(k_klass)->source_file_name(); |
0 | 2182 NULL_CHECK(sfnOop, JVMTI_ERROR_ABSENT_INFORMATION); |
2183 { | |
2184 JavaThread* current_thread = JavaThread::current(); | |
2185 ResourceMark rm(current_thread); | |
2186 const char* sfncp = (const char*) sfnOop->as_C_string(); | |
2187 *source_name_ptr = (char *) jvmtiMalloc(strlen(sfncp)+1); | |
2188 strcpy(*source_name_ptr, sfncp); | |
2189 } | |
2190 | |
2191 return JVMTI_ERROR_NONE; | |
2192 } /* end GetSourceFileName */ | |
2193 | |
2194 | |
2195 // k_mirror - may be primitive, this must be checked | |
2196 // modifiers_ptr - pre-checked for NULL | |
2197 jvmtiError | |
2198 JvmtiEnv::GetClassModifiers(oop k_mirror, jint* modifiers_ptr) { | |
2199 JavaThread* current_thread = JavaThread::current(); | |
2200 jint result = 0; | |
2201 if (!java_lang_Class::is_primitive(k_mirror)) { | |
2202 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2203 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
2204 assert((Klass::cast(k)->oop_is_instance() || Klass::cast(k)->oop_is_array()), "should be an instance or an array klass"); | |
2205 result = Klass::cast(k)->compute_modifier_flags(current_thread); | |
2206 JavaThread* THREAD = current_thread; // pass to macros | |
2207 if (HAS_PENDING_EXCEPTION) { | |
2208 CLEAR_PENDING_EXCEPTION; | |
2209 return JVMTI_ERROR_INTERNAL; | |
2210 }; | |
2211 | |
2212 // Reset the deleted ACC_SUPER bit ( deleted in compute_modifier_flags()). | |
2213 if(Klass::cast(k)->is_super()) { | |
2214 result |= JVM_ACC_SUPER; | |
2215 } | |
2216 } else { | |
2217 result = (JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC); | |
2218 } | |
2219 *modifiers_ptr = result; | |
2220 | |
2221 return JVMTI_ERROR_NONE; | |
2222 } /* end GetClassModifiers */ | |
2223 | |
2224 | |
2225 // k_mirror - may be primitive, this must be checked | |
2226 // method_count_ptr - pre-checked for NULL | |
2227 // methods_ptr - pre-checked for NULL | |
2228 jvmtiError | |
2229 JvmtiEnv::GetClassMethods(oop k_mirror, jint* method_count_ptr, jmethodID** methods_ptr) { | |
2230 JavaThread* current_thread = JavaThread::current(); | |
2231 HandleMark hm(current_thread); | |
2232 | |
2233 if (java_lang_Class::is_primitive(k_mirror)) { | |
2234 *method_count_ptr = 0; | |
2235 *methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID)); | |
2236 return JVMTI_ERROR_NONE; | |
2237 } | |
2238 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2239 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
2240 | |
2241 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
2242 if (!(Klass::cast(k)->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) { | |
2243 return JVMTI_ERROR_CLASS_NOT_PREPARED; | |
2244 } | |
2245 | |
2246 if (!Klass::cast(k)->oop_is_instance()) { | |
2247 *method_count_ptr = 0; | |
2248 *methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID)); | |
2249 return JVMTI_ERROR_NONE; | |
2250 } | |
2251 instanceKlassHandle instanceK_h(current_thread, k); | |
2252 // Allocate the result and fill it in | |
2253 int result_length = instanceK_h->methods()->length(); | |
2254 jmethodID* result_list = (jmethodID*)jvmtiMalloc(result_length * sizeof(jmethodID)); | |
2255 int index; | |
2256 if (JvmtiExport::can_maintain_original_method_order()) { | |
2257 // Use the original method ordering indices stored in the class, so we can emit | |
2258 // jmethodIDs in the order they appeared in the class file | |
2259 for (index = 0; index < result_length; index++) { | |
2260 methodOop m = methodOop(instanceK_h->methods()->obj_at(index)); | |
2261 int original_index = instanceK_h->method_ordering()->int_at(index); | |
2262 assert(original_index >= 0 && original_index < result_length, "invalid original method index"); | |
2263 jmethodID id = m->jmethod_id(); | |
2264 result_list[original_index] = id; | |
2265 } | |
2266 } else { | |
2267 // otherwise just copy in any order | |
2268 for (index = 0; index < result_length; index++) { | |
2269 methodOop m = methodOop(instanceK_h->methods()->obj_at(index)); | |
2270 jmethodID id = m->jmethod_id(); | |
2271 result_list[index] = id; | |
2272 } | |
2273 } | |
2274 // Fill in return value. | |
2275 *method_count_ptr = result_length; | |
2276 *methods_ptr = result_list; | |
2277 | |
2278 return JVMTI_ERROR_NONE; | |
2279 } /* end GetClassMethods */ | |
2280 | |
2281 | |
2282 // k_mirror - may be primitive, this must be checked | |
2283 // field_count_ptr - pre-checked for NULL | |
2284 // fields_ptr - pre-checked for NULL | |
2285 jvmtiError | |
2286 JvmtiEnv::GetClassFields(oop k_mirror, jint* field_count_ptr, jfieldID** fields_ptr) { | |
2287 if (java_lang_Class::is_primitive(k_mirror)) { | |
2288 *field_count_ptr = 0; | |
2289 *fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID)); | |
2290 return JVMTI_ERROR_NONE; | |
2291 } | |
2292 JavaThread* current_thread = JavaThread::current(); | |
2293 HandleMark hm(current_thread); | |
2294 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2295 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
2296 | |
2297 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
2298 if (!(Klass::cast(k)->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) { | |
2299 return JVMTI_ERROR_CLASS_NOT_PREPARED; | |
2300 } | |
2301 | |
2302 if (!Klass::cast(k)->oop_is_instance()) { | |
2303 *field_count_ptr = 0; | |
2304 *fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID)); | |
2305 return JVMTI_ERROR_NONE; | |
2306 } | |
2307 | |
2308 | |
2309 instanceKlassHandle instanceK_h(current_thread, k); | |
2310 | |
2311 int result_count = 0; | |
2312 // First, count the fields. | |
2313 FilteredFieldStream flds(instanceK_h, true, true); | |
2314 result_count = flds.field_count(); | |
2315 | |
2316 // Allocate the result and fill it in | |
2317 jfieldID* result_list = (jfieldID*) jvmtiMalloc(result_count * sizeof(jfieldID)); | |
2318 // The JVMTI spec requires fields in the order they occur in the class file, | |
2319 // this is the reverse order of what FieldStream hands out. | |
2320 int id_index = (result_count - 1); | |
2321 | |
2322 for (FilteredFieldStream src_st(instanceK_h, true, true); !src_st.eos(); src_st.next()) { | |
2323 result_list[id_index--] = jfieldIDWorkaround::to_jfieldID( | |
2324 instanceK_h, src_st.offset(), | |
2325 src_st.access_flags().is_static()); | |
2326 } | |
2327 assert(id_index == -1, "just checking"); | |
2328 // Fill in the results | |
2329 *field_count_ptr = result_count; | |
2330 *fields_ptr = result_list; | |
2331 | |
2332 return JVMTI_ERROR_NONE; | |
2333 } /* end GetClassFields */ | |
2334 | |
2335 | |
2336 // k_mirror - may be primitive, this must be checked | |
2337 // interface_count_ptr - pre-checked for NULL | |
2338 // interfaces_ptr - pre-checked for NULL | |
2339 jvmtiError | |
2340 JvmtiEnv::GetImplementedInterfaces(oop k_mirror, jint* interface_count_ptr, jclass** interfaces_ptr) { | |
2341 { | |
2342 if (java_lang_Class::is_primitive(k_mirror)) { | |
2343 *interface_count_ptr = 0; | |
2344 *interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass)); | |
2345 return JVMTI_ERROR_NONE; | |
2346 } | |
2347 JavaThread* current_thread = JavaThread::current(); | |
2348 HandleMark hm(current_thread); | |
2349 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2350 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
2351 | |
2352 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
2353 if (!(Klass::cast(k)->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) | |
2354 return JVMTI_ERROR_CLASS_NOT_PREPARED; | |
2355 | |
2356 if (!Klass::cast(k)->oop_is_instance()) { | |
2357 *interface_count_ptr = 0; | |
2358 *interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass)); | |
2359 return JVMTI_ERROR_NONE; | |
2360 } | |
2361 | |
2362 objArrayHandle interface_list(current_thread, instanceKlass::cast(k)->local_interfaces()); | |
2363 const int result_length = (interface_list.is_null() ? 0 : interface_list->length()); | |
2364 jclass* result_list = (jclass*) jvmtiMalloc(result_length * sizeof(jclass)); | |
2365 for (int i_index = 0; i_index < result_length; i_index += 1) { | |
2366 oop oop_at = interface_list->obj_at(i_index); | |
2367 assert(oop_at->is_klass(), "interfaces must be klassOops"); | |
2368 klassOop klassOop_at = klassOop(oop_at); // ???: is there a better way? | |
2369 assert(Klass::cast(klassOop_at)->is_interface(), "interfaces must be interfaces"); | |
2370 oop mirror_at = Klass::cast(klassOop_at)->java_mirror(); | |
2371 Handle handle_at = Handle(current_thread, mirror_at); | |
2372 result_list[i_index] = (jclass) jni_reference(handle_at); | |
2373 } | |
2374 *interface_count_ptr = result_length; | |
2375 *interfaces_ptr = result_list; | |
2376 } | |
2377 | |
2378 return JVMTI_ERROR_NONE; | |
2379 } /* end GetImplementedInterfaces */ | |
2380 | |
2381 | |
2382 // k_mirror - may be primitive, this must be checked | |
2383 // minor_version_ptr - pre-checked for NULL | |
2384 // major_version_ptr - pre-checked for NULL | |
2385 jvmtiError | |
2386 JvmtiEnv::GetClassVersionNumbers(oop k_mirror, jint* minor_version_ptr, jint* major_version_ptr) { | |
2387 if (java_lang_Class::is_primitive(k_mirror)) { | |
2388 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2389 } | |
2390 klassOop k_oop = java_lang_Class::as_klassOop(k_mirror); | |
2391 Thread *thread = Thread::current(); | |
2392 HandleMark hm(thread); | |
2393 KlassHandle klass(thread, k_oop); | |
2394 | |
2395 jint status = klass->jvmti_class_status(); | |
2396 if (status & (JVMTI_CLASS_STATUS_ERROR)) { | |
2397 return JVMTI_ERROR_INVALID_CLASS; | |
2398 } | |
2399 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { | |
2400 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2401 } | |
2402 | |
2403 instanceKlassHandle ik(thread, k_oop); | |
2404 *minor_version_ptr = ik->minor_version(); | |
2405 *major_version_ptr = ik->major_version(); | |
2406 | |
2407 return JVMTI_ERROR_NONE; | |
2408 } /* end GetClassVersionNumbers */ | |
2409 | |
2410 | |
2411 // k_mirror - may be primitive, this must be checked | |
2412 // constant_pool_count_ptr - pre-checked for NULL | |
2413 // constant_pool_byte_count_ptr - pre-checked for NULL | |
2414 // constant_pool_bytes_ptr - pre-checked for NULL | |
2415 jvmtiError | |
2416 JvmtiEnv::GetConstantPool(oop k_mirror, jint* constant_pool_count_ptr, jint* constant_pool_byte_count_ptr, unsigned char** constant_pool_bytes_ptr) { | |
2417 if (java_lang_Class::is_primitive(k_mirror)) { | |
2418 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2419 } | |
2420 | |
2421 klassOop k_oop = java_lang_Class::as_klassOop(k_mirror); | |
2422 Thread *thread = Thread::current(); | |
2423 HandleMark hm(thread); | |
2424 ResourceMark rm(thread); | |
2425 KlassHandle klass(thread, k_oop); | |
2426 | |
2427 jint status = klass->jvmti_class_status(); | |
2428 if (status & (JVMTI_CLASS_STATUS_ERROR)) { | |
2429 return JVMTI_ERROR_INVALID_CLASS; | |
2430 } | |
2431 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { | |
2432 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2433 } | |
2434 | |
2435 instanceKlassHandle ikh(thread, k_oop); | |
2436 constantPoolHandle constants(thread, ikh->constants()); | |
2437 ObjectLocker ol(constants, thread); // lock constant pool while we query it | |
2438 | |
2439 JvmtiConstantPoolReconstituter reconstituter(ikh); | |
2440 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
2441 return reconstituter.get_error(); | |
2442 } | |
2443 | |
2444 unsigned char *cpool_bytes; | |
2445 int cpool_size = reconstituter.cpool_size(); | |
2446 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
2447 return reconstituter.get_error(); | |
2448 } | |
2449 jvmtiError res = allocate(cpool_size, &cpool_bytes); | |
2450 if (res != JVMTI_ERROR_NONE) { | |
2451 return res; | |
2452 } | |
2453 reconstituter.copy_cpool_bytes(cpool_bytes); | |
2454 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
2455 return reconstituter.get_error(); | |
2456 } | |
2457 | |
2458 *constant_pool_count_ptr = constants->length(); | |
2459 *constant_pool_byte_count_ptr = cpool_size; | |
2460 *constant_pool_bytes_ptr = cpool_bytes; | |
2461 | |
2462 return JVMTI_ERROR_NONE; | |
2463 } /* end GetConstantPool */ | |
2464 | |
2465 | |
2466 // k_mirror - may be primitive, this must be checked | |
2467 // is_interface_ptr - pre-checked for NULL | |
2468 jvmtiError | |
2469 JvmtiEnv::IsInterface(oop k_mirror, jboolean* is_interface_ptr) { | |
2470 { | |
2471 bool result = false; | |
2472 if (!java_lang_Class::is_primitive(k_mirror)) { | |
2473 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2474 if (k != NULL && Klass::cast(k)->is_interface()) { | |
2475 result = true; | |
2476 } | |
2477 } | |
2478 *is_interface_ptr = result; | |
2479 } | |
2480 | |
2481 return JVMTI_ERROR_NONE; | |
2482 } /* end IsInterface */ | |
2483 | |
2484 | |
2485 // k_mirror - may be primitive, this must be checked | |
2486 // is_array_class_ptr - pre-checked for NULL | |
2487 jvmtiError | |
2488 JvmtiEnv::IsArrayClass(oop k_mirror, jboolean* is_array_class_ptr) { | |
2489 { | |
2490 bool result = false; | |
2491 if (!java_lang_Class::is_primitive(k_mirror)) { | |
2492 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2493 if (k != NULL && Klass::cast(k)->oop_is_array()) { | |
2494 result = true; | |
2495 } | |
2496 } | |
2497 *is_array_class_ptr = result; | |
2498 } | |
2499 | |
2500 return JVMTI_ERROR_NONE; | |
2501 } /* end IsArrayClass */ | |
2502 | |
2503 | |
2504 // k_mirror - may be primitive, this must be checked | |
2505 // classloader_ptr - pre-checked for NULL | |
2506 jvmtiError | |
2507 JvmtiEnv::GetClassLoader(oop k_mirror, jobject* classloader_ptr) { | |
2508 { | |
2509 if (java_lang_Class::is_primitive(k_mirror)) { | |
2510 *classloader_ptr = (jclass) jni_reference(Handle()); | |
2511 return JVMTI_ERROR_NONE; | |
2512 } | |
2513 JavaThread* current_thread = JavaThread::current(); | |
2514 HandleMark hm(current_thread); | |
2515 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2516 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
2517 | |
2518 oop result_oop = Klass::cast(k)->class_loader(); | |
2519 if (result_oop == NULL) { | |
2520 *classloader_ptr = (jclass) jni_reference(Handle()); | |
2521 return JVMTI_ERROR_NONE; | |
2522 } | |
2523 Handle result_handle = Handle(current_thread, result_oop); | |
2524 jclass result_jnihandle = (jclass) jni_reference(result_handle); | |
2525 *classloader_ptr = result_jnihandle; | |
2526 } | |
2527 return JVMTI_ERROR_NONE; | |
2528 } /* end GetClassLoader */ | |
2529 | |
2530 | |
2531 // k_mirror - may be primitive, this must be checked | |
2532 // source_debug_extension_ptr - pre-checked for NULL | |
2533 jvmtiError | |
2534 JvmtiEnv::GetSourceDebugExtension(oop k_mirror, char** source_debug_extension_ptr) { | |
2535 { | |
2536 if (java_lang_Class::is_primitive(k_mirror)) { | |
2537 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2538 } | |
2539 klassOop k = java_lang_Class::as_klassOop(k_mirror); | |
2540 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); | |
2541 if (!Klass::cast(k)->oop_is_instance()) { | |
2542 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2543 } | |
6203
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diff
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|
2544 char* sde = instanceKlass::cast(k)->source_debug_extension(); |
04ade88d9712
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diff
changeset
|
2545 NULL_CHECK(sde, JVMTI_ERROR_ABSENT_INFORMATION); |
0 | 2546 |
2547 { | |
6203
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diff
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|
2548 *source_debug_extension_ptr = (char *) jvmtiMalloc(strlen(sde)+1); |
04ade88d9712
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diff
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|
2549 strcpy(*source_debug_extension_ptr, sde); |
0 | 2550 } |
2551 } | |
2552 | |
2553 return JVMTI_ERROR_NONE; | |
2554 } /* end GetSourceDebugExtension */ | |
2555 | |
2556 // | |
2557 // Object functions | |
2558 // | |
2559 | |
2560 // hash_code_ptr - pre-checked for NULL | |
2561 jvmtiError | |
2562 JvmtiEnv::GetObjectHashCode(jobject object, jint* hash_code_ptr) { | |
2563 oop mirror = JNIHandles::resolve_external_guard(object); | |
2564 NULL_CHECK(mirror, JVMTI_ERROR_INVALID_OBJECT); | |
2565 NULL_CHECK(hash_code_ptr, JVMTI_ERROR_NULL_POINTER); | |
2566 | |
2567 { | |
2568 jint result = (jint) mirror->identity_hash(); | |
2569 *hash_code_ptr = result; | |
2570 } | |
2571 return JVMTI_ERROR_NONE; | |
2572 } /* end GetObjectHashCode */ | |
2573 | |
2574 | |
2575 // info_ptr - pre-checked for NULL | |
2576 jvmtiError | |
2577 JvmtiEnv::GetObjectMonitorUsage(jobject object, jvmtiMonitorUsage* info_ptr) { | |
2578 JavaThread* calling_thread = JavaThread::current(); | |
2579 jvmtiError err = get_object_monitor_usage(calling_thread, object, info_ptr); | |
2580 if (err == JVMTI_ERROR_THREAD_NOT_SUSPENDED) { | |
2581 // Some of the critical threads were not suspended. go to a safepoint and try again | |
2582 VM_GetObjectMonitorUsage op(this, calling_thread, object, info_ptr); | |
2583 VMThread::execute(&op); | |
2584 err = op.result(); | |
2585 } | |
2586 return err; | |
2587 } /* end GetObjectMonitorUsage */ | |
2588 | |
2589 | |
2590 // | |
2591 // Field functions | |
2592 // | |
2593 | |
2594 // name_ptr - NULL is a valid value, must be checked | |
2595 // signature_ptr - NULL is a valid value, must be checked | |
2596 // generic_ptr - NULL is a valid value, must be checked | |
2597 jvmtiError | |
2598 JvmtiEnv::GetFieldName(fieldDescriptor* fdesc_ptr, char** name_ptr, char** signature_ptr, char** generic_ptr) { | |
2599 JavaThread* current_thread = JavaThread::current(); | |
2600 ResourceMark rm(current_thread); | |
2601 if (name_ptr == NULL) { | |
2602 // just don't return the name | |
2603 } else { | |
2604 const char* fieldName = fdesc_ptr->name()->as_C_string(); | |
2605 *name_ptr = (char*) jvmtiMalloc(strlen(fieldName) + 1); | |
2606 if (*name_ptr == NULL) | |
2607 return JVMTI_ERROR_OUT_OF_MEMORY; | |
2608 strcpy(*name_ptr, fieldName); | |
2609 } | |
2610 if (signature_ptr== NULL) { | |
2611 // just don't return the signature | |
2612 } else { | |
2613 const char* fieldSignature = fdesc_ptr->signature()->as_C_string(); | |
2614 *signature_ptr = (char*) jvmtiMalloc(strlen(fieldSignature) + 1); | |
2615 if (*signature_ptr == NULL) | |
2616 return JVMTI_ERROR_OUT_OF_MEMORY; | |
2617 strcpy(*signature_ptr, fieldSignature); | |
2618 } | |
2619 if (generic_ptr != NULL) { | |
2620 *generic_ptr = NULL; | |
2177
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coleenp
parents:
2100
diff
changeset
|
2621 Symbol* soop = fdesc_ptr->generic_signature(); |
0 | 2622 if (soop != NULL) { |
2623 const char* gen_sig = soop->as_C_string(); | |
2624 if (gen_sig != NULL) { | |
2625 jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr); | |
2626 if (err != JVMTI_ERROR_NONE) { | |
2627 return err; | |
2628 } | |
2629 strcpy(*generic_ptr, gen_sig); | |
2630 } | |
2631 } | |
2632 } | |
2633 return JVMTI_ERROR_NONE; | |
2634 } /* end GetFieldName */ | |
2635 | |
2636 | |
2637 // declaring_class_ptr - pre-checked for NULL | |
2638 jvmtiError | |
2639 JvmtiEnv::GetFieldDeclaringClass(fieldDescriptor* fdesc_ptr, jclass* declaring_class_ptr) { | |
2640 | |
2641 *declaring_class_ptr = get_jni_class_non_null(fdesc_ptr->field_holder()); | |
2642 return JVMTI_ERROR_NONE; | |
2643 } /* end GetFieldDeclaringClass */ | |
2644 | |
2645 | |
2646 // modifiers_ptr - pre-checked for NULL | |
2647 jvmtiError | |
2648 JvmtiEnv::GetFieldModifiers(fieldDescriptor* fdesc_ptr, jint* modifiers_ptr) { | |
2649 | |
2650 AccessFlags resultFlags = fdesc_ptr->access_flags(); | |
2651 jint result = resultFlags.as_int(); | |
2652 *modifiers_ptr = result; | |
2653 | |
2654 return JVMTI_ERROR_NONE; | |
2655 } /* end GetFieldModifiers */ | |
2656 | |
2657 | |
2658 // is_synthetic_ptr - pre-checked for NULL | |
2659 jvmtiError | |
2660 JvmtiEnv::IsFieldSynthetic(fieldDescriptor* fdesc_ptr, jboolean* is_synthetic_ptr) { | |
2661 *is_synthetic_ptr = fdesc_ptr->is_synthetic(); | |
2662 return JVMTI_ERROR_NONE; | |
2663 } /* end IsFieldSynthetic */ | |
2664 | |
2665 | |
2666 // | |
2667 // Method functions | |
2668 // | |
2669 | |
2670 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2671 // name_ptr - NULL is a valid value, must be checked | |
2672 // signature_ptr - NULL is a valid value, must be checked | |
2673 // generic_ptr - NULL is a valid value, must be checked | |
2674 jvmtiError | |
2675 JvmtiEnv::GetMethodName(methodOop method_oop, char** name_ptr, char** signature_ptr, char** generic_ptr) { | |
2676 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2677 JavaThread* current_thread = JavaThread::current(); | |
2678 | |
2679 ResourceMark rm(current_thread); // get the utf8 name and signature | |
2680 if (name_ptr == NULL) { | |
2681 // just don't return the name | |
2682 } else { | |
2683 const char* utf8_name = (const char *) method_oop->name()->as_utf8(); | |
2684 *name_ptr = (char *) jvmtiMalloc(strlen(utf8_name)+1); | |
2685 strcpy(*name_ptr, utf8_name); | |
2686 } | |
2687 if (signature_ptr == NULL) { | |
2688 // just don't return the signature | |
2689 } else { | |
2690 const char* utf8_signature = (const char *) method_oop->signature()->as_utf8(); | |
2691 *signature_ptr = (char *) jvmtiMalloc(strlen(utf8_signature) + 1); | |
2692 strcpy(*signature_ptr, utf8_signature); | |
2693 } | |
2694 | |
2695 if (generic_ptr != NULL) { | |
2696 *generic_ptr = NULL; | |
2177
3582bf76420e
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coleenp
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2100
diff
changeset
|
2697 Symbol* soop = method_oop->generic_signature(); |
0 | 2698 if (soop != NULL) { |
2699 const char* gen_sig = soop->as_C_string(); | |
2700 if (gen_sig != NULL) { | |
2701 jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr); | |
2702 if (err != JVMTI_ERROR_NONE) { | |
2703 return err; | |
2704 } | |
2705 strcpy(*generic_ptr, gen_sig); | |
2706 } | |
2707 } | |
2708 } | |
2709 return JVMTI_ERROR_NONE; | |
2710 } /* end GetMethodName */ | |
2711 | |
2712 | |
2713 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2714 // declaring_class_ptr - pre-checked for NULL | |
2715 jvmtiError | |
2716 JvmtiEnv::GetMethodDeclaringClass(methodOop method_oop, jclass* declaring_class_ptr) { | |
2717 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2718 (*declaring_class_ptr) = get_jni_class_non_null(method_oop->method_holder()); | |
2719 return JVMTI_ERROR_NONE; | |
2720 } /* end GetMethodDeclaringClass */ | |
2721 | |
2722 | |
2723 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2724 // modifiers_ptr - pre-checked for NULL | |
2725 jvmtiError | |
2726 JvmtiEnv::GetMethodModifiers(methodOop method_oop, jint* modifiers_ptr) { | |
2727 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2728 (*modifiers_ptr) = method_oop->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
2729 return JVMTI_ERROR_NONE; | |
2730 } /* end GetMethodModifiers */ | |
2731 | |
2732 | |
2733 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2734 // max_ptr - pre-checked for NULL | |
2735 jvmtiError | |
2736 JvmtiEnv::GetMaxLocals(methodOop method_oop, jint* max_ptr) { | |
2737 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2738 // get max stack | |
2739 (*max_ptr) = method_oop->max_locals(); | |
2740 return JVMTI_ERROR_NONE; | |
2741 } /* end GetMaxLocals */ | |
2742 | |
2743 | |
2744 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2745 // size_ptr - pre-checked for NULL | |
2746 jvmtiError | |
2747 JvmtiEnv::GetArgumentsSize(methodOop method_oop, jint* size_ptr) { | |
2748 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2749 // get size of arguments | |
2750 | |
2751 (*size_ptr) = method_oop->size_of_parameters(); | |
2752 return JVMTI_ERROR_NONE; | |
2753 } /* end GetArgumentsSize */ | |
2754 | |
2755 | |
2756 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2757 // entry_count_ptr - pre-checked for NULL | |
2758 // table_ptr - pre-checked for NULL | |
2759 jvmtiError | |
2760 JvmtiEnv::GetLineNumberTable(methodOop method_oop, jint* entry_count_ptr, jvmtiLineNumberEntry** table_ptr) { | |
2761 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2762 if (!method_oop->has_linenumber_table()) { | |
2763 return (JVMTI_ERROR_ABSENT_INFORMATION); | |
2764 } | |
2765 | |
2766 // The line number table is compressed so we don't know how big it is until decompressed. | |
2767 // Decompression is really fast so we just do it twice. | |
2768 | |
2769 // Compute size of table | |
2770 jint num_entries = 0; | |
2771 CompressedLineNumberReadStream stream(method_oop->compressed_linenumber_table()); | |
2772 while (stream.read_pair()) { | |
2773 num_entries++; | |
2774 } | |
2775 jvmtiLineNumberEntry *jvmti_table = | |
2776 (jvmtiLineNumberEntry *)jvmtiMalloc(num_entries * (sizeof(jvmtiLineNumberEntry))); | |
2777 | |
2778 // Fill jvmti table | |
2779 if (num_entries > 0) { | |
2780 int index = 0; | |
2781 CompressedLineNumberReadStream stream(method_oop->compressed_linenumber_table()); | |
2782 while (stream.read_pair()) { | |
2783 jvmti_table[index].start_location = (jlocation) stream.bci(); | |
2784 jvmti_table[index].line_number = (jint) stream.line(); | |
2785 index++; | |
2786 } | |
2787 assert(index == num_entries, "sanity check"); | |
2788 } | |
2789 | |
2790 // Set up results | |
2791 (*entry_count_ptr) = num_entries; | |
2792 (*table_ptr) = jvmti_table; | |
2793 | |
2794 return JVMTI_ERROR_NONE; | |
2795 } /* end GetLineNumberTable */ | |
2796 | |
2797 | |
2798 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2799 // start_location_ptr - pre-checked for NULL | |
2800 // end_location_ptr - pre-checked for NULL | |
2801 jvmtiError | |
2802 JvmtiEnv::GetMethodLocation(methodOop method_oop, jlocation* start_location_ptr, jlocation* end_location_ptr) { | |
2803 | |
2804 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2805 // get start and end location | |
2806 (*end_location_ptr) = (jlocation) (method_oop->code_size() - 1); | |
2807 if (method_oop->code_size() == 0) { | |
2808 // there is no code so there is no start location | |
2809 (*start_location_ptr) = (jlocation)(-1); | |
2810 } else { | |
2811 (*start_location_ptr) = (jlocation)(0); | |
2812 } | |
2813 | |
2814 return JVMTI_ERROR_NONE; | |
2815 } /* end GetMethodLocation */ | |
2816 | |
2817 | |
2818 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2819 // entry_count_ptr - pre-checked for NULL | |
2820 // table_ptr - pre-checked for NULL | |
2821 jvmtiError | |
2822 JvmtiEnv::GetLocalVariableTable(methodOop method_oop, jint* entry_count_ptr, jvmtiLocalVariableEntry** table_ptr) { | |
2823 | |
2824 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2825 JavaThread* current_thread = JavaThread::current(); | |
2826 | |
2827 // does the klass have any local variable information? | |
2828 instanceKlass* ik = instanceKlass::cast(method_oop->method_holder()); | |
2829 if (!ik->access_flags().has_localvariable_table()) { | |
2830 return (JVMTI_ERROR_ABSENT_INFORMATION); | |
2831 } | |
2832 | |
2833 constantPoolOop constants = method_oop->constants(); | |
2834 NULL_CHECK(constants, JVMTI_ERROR_ABSENT_INFORMATION); | |
2835 | |
2836 // in the vm localvariable table representation, 6 consecutive elements in the table | |
2837 // represent a 6-tuple of shorts | |
2838 // [start_pc, length, name_index, descriptor_index, signature_index, index] | |
2839 jint num_entries = method_oop->localvariable_table_length(); | |
2840 jvmtiLocalVariableEntry *jvmti_table = (jvmtiLocalVariableEntry *) | |
2841 jvmtiMalloc(num_entries * (sizeof(jvmtiLocalVariableEntry))); | |
2842 | |
2843 if (num_entries > 0) { | |
2844 LocalVariableTableElement* table = method_oop->localvariable_table_start(); | |
2845 for (int i = 0; i < num_entries; i++) { | |
2846 // get the 5 tuple information from the vm table | |
2847 jlocation start_location = (jlocation) table[i].start_bci; | |
2848 jint length = (jint) table[i].length; | |
2849 int name_index = (int) table[i].name_cp_index; | |
2850 int signature_index = (int) table[i].descriptor_cp_index; | |
2851 int generic_signature_index = (int) table[i].signature_cp_index; | |
2852 jint slot = (jint) table[i].slot; | |
2853 | |
2854 // get utf8 name and signature | |
2855 char *name_buf = NULL; | |
2856 char *sig_buf = NULL; | |
2857 char *gen_sig_buf = NULL; | |
2858 { | |
2859 ResourceMark rm(current_thread); | |
2860 | |
2861 const char *utf8_name = (const char *) constants->symbol_at(name_index)->as_utf8(); | |
2862 name_buf = (char *) jvmtiMalloc(strlen(utf8_name)+1); | |
2863 strcpy(name_buf, utf8_name); | |
2864 | |
2865 const char *utf8_signature = (const char *) constants->symbol_at(signature_index)->as_utf8(); | |
2866 sig_buf = (char *) jvmtiMalloc(strlen(utf8_signature)+1); | |
2867 strcpy(sig_buf, utf8_signature); | |
2868 | |
2869 if (generic_signature_index > 0) { | |
2870 const char *utf8_gen_sign = (const char *) | |
2871 constants->symbol_at(generic_signature_index)->as_utf8(); | |
2872 gen_sig_buf = (char *) jvmtiMalloc(strlen(utf8_gen_sign)+1); | |
2873 strcpy(gen_sig_buf, utf8_gen_sign); | |
2874 } | |
2875 } | |
2876 | |
2877 // fill in the jvmti local variable table | |
2878 jvmti_table[i].start_location = start_location; | |
2879 jvmti_table[i].length = length; | |
2880 jvmti_table[i].name = name_buf; | |
2881 jvmti_table[i].signature = sig_buf; | |
2882 jvmti_table[i].generic_signature = gen_sig_buf; | |
2883 jvmti_table[i].slot = slot; | |
2884 } | |
2885 } | |
2886 | |
2887 // set results | |
2888 (*entry_count_ptr) = num_entries; | |
2889 (*table_ptr) = jvmti_table; | |
2890 | |
2891 return JVMTI_ERROR_NONE; | |
2892 } /* end GetLocalVariableTable */ | |
2893 | |
2894 | |
2895 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2896 // bytecode_count_ptr - pre-checked for NULL | |
2897 // bytecodes_ptr - pre-checked for NULL | |
2898 jvmtiError | |
2899 JvmtiEnv::GetBytecodes(methodOop method_oop, jint* bytecode_count_ptr, unsigned char** bytecodes_ptr) { | |
2900 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2901 | |
2902 HandleMark hm; | |
2903 methodHandle method(method_oop); | |
2904 jint size = (jint)method->code_size(); | |
2905 jvmtiError err = allocate(size, bytecodes_ptr); | |
2906 if (err != JVMTI_ERROR_NONE) { | |
2907 return err; | |
2908 } | |
2909 | |
2910 (*bytecode_count_ptr) = size; | |
2911 // get byte codes | |
2912 JvmtiClassFileReconstituter::copy_bytecodes(method, *bytecodes_ptr); | |
2913 | |
2914 return JVMTI_ERROR_NONE; | |
2915 } /* end GetBytecodes */ | |
2916 | |
2917 | |
2918 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2919 // is_native_ptr - pre-checked for NULL | |
2920 jvmtiError | |
2921 JvmtiEnv::IsMethodNative(methodOop method_oop, jboolean* is_native_ptr) { | |
2922 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2923 (*is_native_ptr) = method_oop->is_native(); | |
2924 return JVMTI_ERROR_NONE; | |
2925 } /* end IsMethodNative */ | |
2926 | |
2927 | |
2928 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2929 // is_synthetic_ptr - pre-checked for NULL | |
2930 jvmtiError | |
2931 JvmtiEnv::IsMethodSynthetic(methodOop method_oop, jboolean* is_synthetic_ptr) { | |
2932 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2933 (*is_synthetic_ptr) = method_oop->is_synthetic(); | |
2934 return JVMTI_ERROR_NONE; | |
2935 } /* end IsMethodSynthetic */ | |
2936 | |
2937 | |
2938 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2939 // is_obsolete_ptr - pre-checked for NULL | |
2940 jvmtiError | |
2941 JvmtiEnv::IsMethodObsolete(methodOop method_oop, jboolean* is_obsolete_ptr) { | |
1121 | 2942 if (use_version_1_0_semantics() && |
2943 get_capabilities()->can_redefine_classes == 0) { | |
2944 // This JvmtiEnv requested version 1.0 semantics and this function | |
2945 // requires the can_redefine_classes capability in version 1.0 so | |
2946 // we need to return an error here. | |
2947 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; | |
2948 } | |
2949 | |
0 | 2950 if (method_oop == NULL || method_oop->is_obsolete()) { |
2951 *is_obsolete_ptr = true; | |
2952 } else { | |
2953 *is_obsolete_ptr = false; | |
2954 } | |
2955 return JVMTI_ERROR_NONE; | |
2956 } /* end IsMethodObsolete */ | |
2957 | |
2958 // | |
2959 // Raw Monitor functions | |
2960 // | |
2961 | |
2962 // name - pre-checked for NULL | |
2963 // monitor_ptr - pre-checked for NULL | |
2964 jvmtiError | |
2965 JvmtiEnv::CreateRawMonitor(const char* name, jrawMonitorID* monitor_ptr) { | |
2966 JvmtiRawMonitor* rmonitor = new JvmtiRawMonitor(name); | |
2967 NULL_CHECK(rmonitor, JVMTI_ERROR_OUT_OF_MEMORY); | |
2968 | |
2969 *monitor_ptr = (jrawMonitorID)rmonitor; | |
2970 | |
2971 return JVMTI_ERROR_NONE; | |
2972 } /* end CreateRawMonitor */ | |
2973 | |
2974 | |
2975 // rmonitor - pre-checked for validity | |
2976 jvmtiError | |
2977 JvmtiEnv::DestroyRawMonitor(JvmtiRawMonitor * rmonitor) { | |
2978 if (Threads::number_of_threads() == 0) { | |
2979 // Remove this monitor from pending raw monitors list | |
2980 // if it has entered in onload or start phase. | |
2981 JvmtiPendingMonitors::destroy(rmonitor); | |
2982 } else { | |
2983 Thread* thread = Thread::current(); | |
2984 if (rmonitor->is_entered(thread)) { | |
2985 // The caller owns this monitor which we are about to destroy. | |
2986 // We exit the underlying synchronization object so that the | |
2987 // "delete monitor" call below can work without an assertion | |
2988 // failure on systems that don't like destroying synchronization | |
2989 // objects that are locked. | |
2990 int r; | |
2991 intptr_t recursion = rmonitor->recursions(); | |
2992 for (intptr_t i=0; i <= recursion; i++) { | |
2993 r = rmonitor->raw_exit(thread); | |
2994 assert(r == ObjectMonitor::OM_OK, "raw_exit should have worked"); | |
2995 if (r != ObjectMonitor::OM_OK) { // robustness | |
2996 return JVMTI_ERROR_INTERNAL; | |
2997 } | |
2998 } | |
2999 } | |
3000 if (rmonitor->owner() != NULL) { | |
3001 // The caller is trying to destroy a monitor that is locked by | |
3002 // someone else. While this is not forbidden by the JVMTI | |
3003 // spec, it will cause an assertion failure on systems that don't | |
3004 // like destroying synchronization objects that are locked. | |
3005 // We indicate a problem with the error return (and leak the | |
3006 // monitor's memory). | |
3007 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3008 } | |
3009 } | |
3010 | |
3011 delete rmonitor; | |
3012 | |
3013 return JVMTI_ERROR_NONE; | |
3014 } /* end DestroyRawMonitor */ | |
3015 | |
3016 | |
3017 // rmonitor - pre-checked for validity | |
3018 jvmtiError | |
3019 JvmtiEnv::RawMonitorEnter(JvmtiRawMonitor * rmonitor) { | |
3020 if (Threads::number_of_threads() == 0) { | |
3021 // No JavaThreads exist so ObjectMonitor enter cannot be | |
3022 // used, add this raw monitor to the pending list. | |
3023 // The pending monitors will be actually entered when | |
3024 // the VM is setup. | |
3025 // See transition_pending_raw_monitors in create_vm() | |
3026 // in thread.cpp. | |
3027 JvmtiPendingMonitors::enter(rmonitor); | |
3028 } else { | |
3029 int r; | |
3030 Thread* thread = Thread::current(); | |
3031 | |
3032 if (thread->is_Java_thread()) { | |
3033 JavaThread* current_thread = (JavaThread*)thread; | |
3034 | |
3035 #ifdef PROPER_TRANSITIONS | |
3036 // Not really unknown but ThreadInVMfromNative does more than we want | |
3037 ThreadInVMfromUnknown __tiv; | |
3038 { | |
3039 ThreadBlockInVM __tbivm(current_thread); | |
3040 r = rmonitor->raw_enter(current_thread); | |
3041 } | |
3042 #else | |
3043 /* Transition to thread_blocked without entering vm state */ | |
3044 /* This is really evil. Normally you can't undo _thread_blocked */ | |
3045 /* transitions like this because it would cause us to miss a */ | |
3046 /* safepoint but since the thread was already in _thread_in_native */ | |
3047 /* the thread is not leaving a safepoint safe state and it will */ | |
3048 /* block when it tries to return from native. We can't safepoint */ | |
3049 /* block in here because we could deadlock the vmthread. Blech. */ | |
3050 | |
3051 JavaThreadState state = current_thread->thread_state(); | |
3052 assert(state == _thread_in_native, "Must be _thread_in_native"); | |
3053 // frame should already be walkable since we are in native | |
3054 assert(!current_thread->has_last_Java_frame() || | |
3055 current_thread->frame_anchor()->walkable(), "Must be walkable"); | |
3056 current_thread->set_thread_state(_thread_blocked); | |
3057 | |
3058 r = rmonitor->raw_enter(current_thread); | |
3059 // restore state, still at a safepoint safe state | |
3060 current_thread->set_thread_state(state); | |
3061 | |
3062 #endif /* PROPER_TRANSITIONS */ | |
3063 assert(r == ObjectMonitor::OM_OK, "raw_enter should have worked"); | |
3064 } else { | |
3065 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
3066 r = rmonitor->raw_enter(thread); | |
3067 } else { | |
3068 ShouldNotReachHere(); | |
3069 } | |
3070 } | |
3071 | |
3072 if (r != ObjectMonitor::OM_OK) { // robustness | |
3073 return JVMTI_ERROR_INTERNAL; | |
3074 } | |
3075 } | |
3076 return JVMTI_ERROR_NONE; | |
3077 } /* end RawMonitorEnter */ | |
3078 | |
3079 | |
3080 // rmonitor - pre-checked for validity | |
3081 jvmtiError | |
3082 JvmtiEnv::RawMonitorExit(JvmtiRawMonitor * rmonitor) { | |
3083 jvmtiError err = JVMTI_ERROR_NONE; | |
3084 | |
3085 if (Threads::number_of_threads() == 0) { | |
3086 // No JavaThreads exist so just remove this monitor from the pending list. | |
3087 // Bool value from exit is false if rmonitor is not in the list. | |
3088 if (!JvmtiPendingMonitors::exit(rmonitor)) { | |
3089 err = JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3090 } | |
3091 } else { | |
3092 int r; | |
3093 Thread* thread = Thread::current(); | |
3094 | |
3095 if (thread->is_Java_thread()) { | |
3096 JavaThread* current_thread = (JavaThread*)thread; | |
3097 #ifdef PROPER_TRANSITIONS | |
3098 // Not really unknown but ThreadInVMfromNative does more than we want | |
3099 ThreadInVMfromUnknown __tiv; | |
3100 #endif /* PROPER_TRANSITIONS */ | |
3101 r = rmonitor->raw_exit(current_thread); | |
3102 } else { | |
3103 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
3104 r = rmonitor->raw_exit(thread); | |
3105 } else { | |
3106 ShouldNotReachHere(); | |
3107 } | |
3108 } | |
3109 | |
3110 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
3111 err = JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3112 } else { | |
3113 assert(r == ObjectMonitor::OM_OK, "raw_exit should have worked"); | |
3114 if (r != ObjectMonitor::OM_OK) { // robustness | |
3115 err = JVMTI_ERROR_INTERNAL; | |
3116 } | |
3117 } | |
3118 } | |
3119 return err; | |
3120 } /* end RawMonitorExit */ | |
3121 | |
3122 | |
3123 // rmonitor - pre-checked for validity | |
3124 jvmtiError | |
3125 JvmtiEnv::RawMonitorWait(JvmtiRawMonitor * rmonitor, jlong millis) { | |
3126 int r; | |
3127 Thread* thread = Thread::current(); | |
3128 | |
3129 if (thread->is_Java_thread()) { | |
3130 JavaThread* current_thread = (JavaThread*)thread; | |
3131 #ifdef PROPER_TRANSITIONS | |
3132 // Not really unknown but ThreadInVMfromNative does more than we want | |
3133 ThreadInVMfromUnknown __tiv; | |
3134 { | |
3135 ThreadBlockInVM __tbivm(current_thread); | |
3136 r = rmonitor->raw_wait(millis, true, current_thread); | |
3137 } | |
3138 #else | |
3139 /* Transition to thread_blocked without entering vm state */ | |
3140 /* This is really evil. Normally you can't undo _thread_blocked */ | |
3141 /* transitions like this because it would cause us to miss a */ | |
3142 /* safepoint but since the thread was already in _thread_in_native */ | |
3143 /* the thread is not leaving a safepoint safe state and it will */ | |
3144 /* block when it tries to return from native. We can't safepoint */ | |
3145 /* block in here because we could deadlock the vmthread. Blech. */ | |
3146 | |
3147 JavaThreadState state = current_thread->thread_state(); | |
3148 assert(state == _thread_in_native, "Must be _thread_in_native"); | |
3149 // frame should already be walkable since we are in native | |
3150 assert(!current_thread->has_last_Java_frame() || | |
3151 current_thread->frame_anchor()->walkable(), "Must be walkable"); | |
3152 current_thread->set_thread_state(_thread_blocked); | |
3153 | |
3154 r = rmonitor->raw_wait(millis, true, current_thread); | |
3155 // restore state, still at a safepoint safe state | |
3156 current_thread->set_thread_state(state); | |
3157 | |
3158 #endif /* PROPER_TRANSITIONS */ | |
3159 } else { | |
3160 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
3161 r = rmonitor->raw_wait(millis, true, thread); | |
3162 } else { | |
3163 ShouldNotReachHere(); | |
3164 } | |
3165 } | |
3166 | |
3167 switch (r) { | |
3168 case ObjectMonitor::OM_INTERRUPTED: | |
3169 return JVMTI_ERROR_INTERRUPT; | |
3170 case ObjectMonitor::OM_ILLEGAL_MONITOR_STATE: | |
3171 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3172 } | |
3173 assert(r == ObjectMonitor::OM_OK, "raw_wait should have worked"); | |
3174 if (r != ObjectMonitor::OM_OK) { // robustness | |
3175 return JVMTI_ERROR_INTERNAL; | |
3176 } | |
3177 | |
3178 return JVMTI_ERROR_NONE; | |
3179 } /* end RawMonitorWait */ | |
3180 | |
3181 | |
3182 // rmonitor - pre-checked for validity | |
3183 jvmtiError | |
3184 JvmtiEnv::RawMonitorNotify(JvmtiRawMonitor * rmonitor) { | |
3185 int r; | |
3186 Thread* thread = Thread::current(); | |
3187 | |
3188 if (thread->is_Java_thread()) { | |
3189 JavaThread* current_thread = (JavaThread*)thread; | |
3190 // Not really unknown but ThreadInVMfromNative does more than we want | |
3191 ThreadInVMfromUnknown __tiv; | |
3192 r = rmonitor->raw_notify(current_thread); | |
3193 } else { | |
3194 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
3195 r = rmonitor->raw_notify(thread); | |
3196 } else { | |
3197 ShouldNotReachHere(); | |
3198 } | |
3199 } | |
3200 | |
3201 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
3202 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3203 } | |
3204 assert(r == ObjectMonitor::OM_OK, "raw_notify should have worked"); | |
3205 if (r != ObjectMonitor::OM_OK) { // robustness | |
3206 return JVMTI_ERROR_INTERNAL; | |
3207 } | |
3208 | |
3209 return JVMTI_ERROR_NONE; | |
3210 } /* end RawMonitorNotify */ | |
3211 | |
3212 | |
3213 // rmonitor - pre-checked for validity | |
3214 jvmtiError | |
3215 JvmtiEnv::RawMonitorNotifyAll(JvmtiRawMonitor * rmonitor) { | |
3216 int r; | |
3217 Thread* thread = Thread::current(); | |
3218 | |
3219 if (thread->is_Java_thread()) { | |
3220 JavaThread* current_thread = (JavaThread*)thread; | |
3221 ThreadInVMfromUnknown __tiv; | |
3222 r = rmonitor->raw_notifyAll(current_thread); | |
3223 } else { | |
3224 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
3225 r = rmonitor->raw_notifyAll(thread); | |
3226 } else { | |
3227 ShouldNotReachHere(); | |
3228 } | |
3229 } | |
3230 | |
3231 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
3232 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3233 } | |
3234 assert(r == ObjectMonitor::OM_OK, "raw_notifyAll should have worked"); | |
3235 if (r != ObjectMonitor::OM_OK) { // robustness | |
3236 return JVMTI_ERROR_INTERNAL; | |
3237 } | |
3238 | |
3239 return JVMTI_ERROR_NONE; | |
3240 } /* end RawMonitorNotifyAll */ | |
3241 | |
3242 | |
3243 // | |
3244 // JNI Function Interception functions | |
3245 // | |
3246 | |
3247 | |
3248 // function_table - pre-checked for NULL | |
3249 jvmtiError | |
3250 JvmtiEnv::SetJNIFunctionTable(const jniNativeInterface* function_table) { | |
3251 // Copy jni function table at safepoint. | |
3252 VM_JNIFunctionTableCopier copier(function_table); | |
3253 VMThread::execute(&copier); | |
3254 | |
3255 return JVMTI_ERROR_NONE; | |
3256 } /* end SetJNIFunctionTable */ | |
3257 | |
3258 | |
3259 // function_table - pre-checked for NULL | |
3260 jvmtiError | |
3261 JvmtiEnv::GetJNIFunctionTable(jniNativeInterface** function_table) { | |
3262 *function_table=(jniNativeInterface*)jvmtiMalloc(sizeof(jniNativeInterface)); | |
3263 if (*function_table == NULL) | |
3264 return JVMTI_ERROR_OUT_OF_MEMORY; | |
3265 memcpy(*function_table,(JavaThread::current())->get_jni_functions(),sizeof(jniNativeInterface)); | |
3266 return JVMTI_ERROR_NONE; | |
3267 } /* end GetJNIFunctionTable */ | |
3268 | |
3269 | |
3270 // | |
3271 // Event Management functions | |
3272 // | |
3273 | |
3274 jvmtiError | |
3275 JvmtiEnv::GenerateEvents(jvmtiEvent event_type) { | |
3276 // can only generate two event types | |
3277 if (event_type != JVMTI_EVENT_COMPILED_METHOD_LOAD && | |
3278 event_type != JVMTI_EVENT_DYNAMIC_CODE_GENERATED) { | |
3279 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
3280 } | |
3281 | |
3282 // for compiled_method_load events we must check that the environment | |
3283 // has the can_generate_compiled_method_load_events capability. | |
3284 if (event_type == JVMTI_EVENT_COMPILED_METHOD_LOAD) { | |
3285 if (get_capabilities()->can_generate_compiled_method_load_events == 0) { | |
3286 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; | |
3287 } | |
3288 return JvmtiCodeBlobEvents::generate_compiled_method_load_events(this); | |
3289 } else { | |
3290 return JvmtiCodeBlobEvents::generate_dynamic_code_events(this); | |
3291 } | |
3292 | |
3293 } /* end GenerateEvents */ | |
3294 | |
3295 | |
3296 // | |
3297 // Extension Mechanism functions | |
3298 // | |
3299 | |
3300 // extension_count_ptr - pre-checked for NULL | |
3301 // extensions - pre-checked for NULL | |
3302 jvmtiError | |
3303 JvmtiEnv::GetExtensionFunctions(jint* extension_count_ptr, jvmtiExtensionFunctionInfo** extensions) { | |
3304 return JvmtiExtensions::get_functions(this, extension_count_ptr, extensions); | |
3305 } /* end GetExtensionFunctions */ | |
3306 | |
3307 | |
3308 // extension_count_ptr - pre-checked for NULL | |
3309 // extensions - pre-checked for NULL | |
3310 jvmtiError | |
3311 JvmtiEnv::GetExtensionEvents(jint* extension_count_ptr, jvmtiExtensionEventInfo** extensions) { | |
3312 return JvmtiExtensions::get_events(this, extension_count_ptr, extensions); | |
3313 } /* end GetExtensionEvents */ | |
3314 | |
3315 | |
3316 // callback - NULL is a valid value, must be checked | |
3317 jvmtiError | |
3318 JvmtiEnv::SetExtensionEventCallback(jint extension_event_index, jvmtiExtensionEvent callback) { | |
3319 return JvmtiExtensions::set_event_callback(this, extension_event_index, callback); | |
3320 } /* end SetExtensionEventCallback */ | |
3321 | |
3322 // | |
3323 // Timers functions | |
3324 // | |
3325 | |
3326 // info_ptr - pre-checked for NULL | |
3327 jvmtiError | |
3328 JvmtiEnv::GetCurrentThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) { | |
3329 os::current_thread_cpu_time_info(info_ptr); | |
3330 return JVMTI_ERROR_NONE; | |
3331 } /* end GetCurrentThreadCpuTimerInfo */ | |
3332 | |
3333 | |
3334 // nanos_ptr - pre-checked for NULL | |
3335 jvmtiError | |
3336 JvmtiEnv::GetCurrentThreadCpuTime(jlong* nanos_ptr) { | |
3337 *nanos_ptr = os::current_thread_cpu_time(); | |
3338 return JVMTI_ERROR_NONE; | |
3339 } /* end GetCurrentThreadCpuTime */ | |
3340 | |
3341 | |
3342 // info_ptr - pre-checked for NULL | |
3343 jvmtiError | |
3344 JvmtiEnv::GetThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) { | |
3345 os::thread_cpu_time_info(info_ptr); | |
3346 return JVMTI_ERROR_NONE; | |
3347 } /* end GetThreadCpuTimerInfo */ | |
3348 | |
3349 | |
3350 // Threads_lock NOT held, java_thread not protected by lock | |
3351 // java_thread - pre-checked | |
3352 // nanos_ptr - pre-checked for NULL | |
3353 jvmtiError | |
3354 JvmtiEnv::GetThreadCpuTime(JavaThread* java_thread, jlong* nanos_ptr) { | |
3355 *nanos_ptr = os::thread_cpu_time(java_thread); | |
3356 return JVMTI_ERROR_NONE; | |
3357 } /* end GetThreadCpuTime */ | |
3358 | |
3359 | |
3360 // info_ptr - pre-checked for NULL | |
3361 jvmtiError | |
3362 JvmtiEnv::GetTimerInfo(jvmtiTimerInfo* info_ptr) { | |
3363 os::javaTimeNanos_info(info_ptr); | |
3364 return JVMTI_ERROR_NONE; | |
3365 } /* end GetTimerInfo */ | |
3366 | |
3367 | |
3368 // nanos_ptr - pre-checked for NULL | |
3369 jvmtiError | |
3370 JvmtiEnv::GetTime(jlong* nanos_ptr) { | |
3371 *nanos_ptr = os::javaTimeNanos(); | |
3372 return JVMTI_ERROR_NONE; | |
3373 } /* end GetTime */ | |
3374 | |
3375 | |
3376 // processor_count_ptr - pre-checked for NULL | |
3377 jvmtiError | |
3378 JvmtiEnv::GetAvailableProcessors(jint* processor_count_ptr) { | |
3379 *processor_count_ptr = os::active_processor_count(); | |
3380 return JVMTI_ERROR_NONE; | |
3381 } /* end GetAvailableProcessors */ | |
3382 | |
3383 // | |
3384 // System Properties functions | |
3385 // | |
3386 | |
3387 // count_ptr - pre-checked for NULL | |
3388 // property_ptr - pre-checked for NULL | |
3389 jvmtiError | |
3390 JvmtiEnv::GetSystemProperties(jint* count_ptr, char*** property_ptr) { | |
3391 jvmtiError err = JVMTI_ERROR_NONE; | |
3392 | |
3393 *count_ptr = Arguments::PropertyList_count(Arguments::system_properties()); | |
3394 | |
3395 err = allocate(*count_ptr * sizeof(char *), (unsigned char **)property_ptr); | |
3396 if (err != JVMTI_ERROR_NONE) { | |
3397 return err; | |
3398 } | |
3399 int i = 0 ; | |
3400 for (SystemProperty* p = Arguments::system_properties(); p != NULL && i < *count_ptr; p = p->next(), i++) { | |
3401 const char *key = p->key(); | |
3402 char **tmp_value = *property_ptr+i; | |
3403 err = allocate((strlen(key)+1) * sizeof(char), (unsigned char**)tmp_value); | |
3404 if (err == JVMTI_ERROR_NONE) { | |
3405 strcpy(*tmp_value, key); | |
3406 } else { | |
3407 // clean up previously allocated memory. | |
3408 for (int j=0; j<i; j++) { | |
3409 Deallocate((unsigned char*)*property_ptr+j); | |
3410 } | |
3411 Deallocate((unsigned char*)property_ptr); | |
3412 break; | |
3413 } | |
3414 } | |
3415 return err; | |
3416 } /* end GetSystemProperties */ | |
3417 | |
3418 | |
3419 // property - pre-checked for NULL | |
3420 // value_ptr - pre-checked for NULL | |
3421 jvmtiError | |
3422 JvmtiEnv::GetSystemProperty(const char* property, char** value_ptr) { | |
3423 jvmtiError err = JVMTI_ERROR_NONE; | |
3424 const char *value; | |
3425 | |
3426 value = Arguments::PropertyList_get_value(Arguments::system_properties(), property); | |
3427 if (value == NULL) { | |
3428 err = JVMTI_ERROR_NOT_AVAILABLE; | |
3429 } else { | |
3430 err = allocate((strlen(value)+1) * sizeof(char), (unsigned char **)value_ptr); | |
3431 if (err == JVMTI_ERROR_NONE) { | |
3432 strcpy(*value_ptr, value); | |
3433 } | |
3434 } | |
3435 return err; | |
3436 } /* end GetSystemProperty */ | |
3437 | |
3438 | |
3439 // property - pre-checked for NULL | |
3440 // value - NULL is a valid value, must be checked | |
3441 jvmtiError | |
2100
b1a2afa37ec4
7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents:
2019
diff
changeset
|
3442 JvmtiEnv::SetSystemProperty(const char* property, const char* value_ptr) { |
0 | 3443 jvmtiError err =JVMTI_ERROR_NOT_AVAILABLE; |
3444 | |
3445 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
3446 if (strcmp(property, p->key()) == 0) { | |
2100
b1a2afa37ec4
7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents:
2019
diff
changeset
|
3447 if (p->set_value((char *)value_ptr)) { |
0 | 3448 err = JVMTI_ERROR_NONE; |
3449 } | |
3450 } | |
3451 } | |
3452 return err; | |
3453 } /* end SetSystemProperty */ | |
3454 | |
3455 #endif // !JVMTI_KERNEL |