Mercurial > hg > graal-compiler
annotate src/share/vm/prims/jvmtiEnv.cpp @ 12823:ac9cb1d5a202
8009130: Lambda: Fix access controls, loader constraints.
Summary: New default methods list with inherited superinterface methods
Reviewed-by: minqi, sspitsyn, coleenp
author | acorn |
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date | Mon, 07 Oct 2013 12:20:28 -0400 |
parents | c115fac239eb |
children | 836a62f43af9 b8860472c377 |
rev | line source |
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0 | 1 /* |
7951 | 2 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/systemDictionary.hpp" | |
27 #include "classfile/vmSymbols.hpp" | |
28 #include "interpreter/bytecodeStream.hpp" | |
29 #include "interpreter/interpreter.hpp" | |
30 #include "jvmtifiles/jvmtiEnv.hpp" | |
31 #include "memory/resourceArea.hpp" | |
32 #include "memory/universe.inline.hpp" | |
33 #include "oops/instanceKlass.hpp" | |
34 #include "prims/jniCheck.hpp" | |
35 #include "prims/jvm_misc.hpp" | |
36 #include "prims/jvmtiAgentThread.hpp" | |
37 #include "prims/jvmtiClassFileReconstituter.hpp" | |
38 #include "prims/jvmtiCodeBlobEvents.hpp" | |
39 #include "prims/jvmtiExtensions.hpp" | |
40 #include "prims/jvmtiGetLoadedClasses.hpp" | |
41 #include "prims/jvmtiImpl.hpp" | |
42 #include "prims/jvmtiManageCapabilities.hpp" | |
43 #include "prims/jvmtiRawMonitor.hpp" | |
44 #include "prims/jvmtiRedefineClasses.hpp" | |
45 #include "prims/jvmtiTagMap.hpp" | |
46 #include "prims/jvmtiThreadState.inline.hpp" | |
47 #include "prims/jvmtiUtil.hpp" | |
48 #include "runtime/arguments.hpp" | |
49 #include "runtime/deoptimization.hpp" | |
50 #include "runtime/interfaceSupport.hpp" | |
51 #include "runtime/javaCalls.hpp" | |
52 #include "runtime/jfieldIDWorkaround.hpp" | |
53 #include "runtime/osThread.hpp" | |
54 #include "runtime/reflectionUtils.hpp" | |
55 #include "runtime/signature.hpp" | |
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56 #include "runtime/thread.inline.hpp" |
1972 | 57 #include "runtime/vframe.hpp" |
58 #include "runtime/vmThread.hpp" | |
59 #include "services/threadService.hpp" | |
60 #include "utilities/exceptions.hpp" | |
61 #include "utilities/preserveException.hpp" | |
0 | 62 |
63 | |
64 #define FIXLATER 0 // REMOVE this when completed. | |
65 | |
66 // FIXLATER: hook into JvmtiTrace | |
67 #define TraceJVMTICalls false | |
68 | |
1121 | 69 JvmtiEnv::JvmtiEnv(jint version) : JvmtiEnvBase(version) { |
0 | 70 } |
71 | |
72 JvmtiEnv::~JvmtiEnv() { | |
73 } | |
74 | |
75 JvmtiEnv* | |
1121 | 76 JvmtiEnv::create_a_jvmti(jint version) { |
77 return new JvmtiEnv(version); | |
0 | 78 } |
79 | |
80 // VM operation class to copy jni function table at safepoint. | |
81 // More than one java threads or jvmti agents may be reading/ | |
82 // modifying jni function tables. To reduce the risk of bad | |
83 // interaction b/w these threads it is copied at safepoint. | |
84 class VM_JNIFunctionTableCopier : public VM_Operation { | |
85 private: | |
86 const struct JNINativeInterface_ *_function_table; | |
87 public: | |
88 VM_JNIFunctionTableCopier(const struct JNINativeInterface_ *func_tbl) { | |
89 _function_table = func_tbl; | |
90 }; | |
91 | |
92 VMOp_Type type() const { return VMOp_JNIFunctionTableCopier; } | |
93 void doit() { | |
94 copy_jni_function_table(_function_table); | |
95 }; | |
96 }; | |
97 | |
98 // | |
99 // Do not change the "prefix" marker below, everything above it is copied | |
100 // unchanged into the filled stub, everything below is controlled by the | |
101 // stub filler (only method bodies are carried forward, and then only for | |
102 // functionality still in the spec). | |
103 // | |
104 // end file prefix | |
105 | |
106 // | |
107 // Memory Management functions | |
108 // | |
109 | |
110 // mem_ptr - pre-checked for NULL | |
111 jvmtiError | |
112 JvmtiEnv::Allocate(jlong size, unsigned char** mem_ptr) { | |
113 return allocate(size, mem_ptr); | |
114 } /* end Allocate */ | |
115 | |
116 | |
117 // mem - NULL is a valid value, must be checked | |
118 jvmtiError | |
119 JvmtiEnv::Deallocate(unsigned char* mem) { | |
120 return deallocate(mem); | |
121 } /* end Deallocate */ | |
122 | |
123 // Threads_lock NOT held, java_thread not protected by lock | |
124 // java_thread - pre-checked | |
125 // data - NULL is a valid value, must be checked | |
126 jvmtiError | |
127 JvmtiEnv::SetThreadLocalStorage(JavaThread* java_thread, const void* data) { | |
128 JvmtiThreadState* state = java_thread->jvmti_thread_state(); | |
129 if (state == NULL) { | |
130 if (data == NULL) { | |
131 // leaving state unset same as data set to NULL | |
132 return JVMTI_ERROR_NONE; | |
133 } | |
134 // otherwise, create the state | |
135 state = JvmtiThreadState::state_for(java_thread); | |
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136 if (state == NULL) { |
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137 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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138 } |
0 | 139 } |
140 state->env_thread_state(this)->set_agent_thread_local_storage_data((void*)data); | |
141 return JVMTI_ERROR_NONE; | |
142 } /* end SetThreadLocalStorage */ | |
143 | |
144 | |
145 // Threads_lock NOT held | |
146 // thread - NOT pre-checked | |
147 // data_ptr - pre-checked for NULL | |
148 jvmtiError | |
149 JvmtiEnv::GetThreadLocalStorage(jthread thread, void** data_ptr) { | |
150 JavaThread* current_thread = JavaThread::current(); | |
151 if (thread == NULL) { | |
152 JvmtiThreadState* state = current_thread->jvmti_thread_state(); | |
153 *data_ptr = (state == NULL) ? NULL : | |
154 state->env_thread_state(this)->get_agent_thread_local_storage_data(); | |
155 } else { | |
156 | |
157 // jvmti_GetThreadLocalStorage is "in native" and doesn't transition | |
158 // the thread to _thread_in_vm. However, when the TLS for a thread | |
159 // other than the current thread is required we need to transition | |
160 // from native so as to resolve the jthread. | |
161 | |
162 ThreadInVMfromNative __tiv(current_thread); | |
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163 VM_ENTRY_BASE(jvmtiError, JvmtiEnv::GetThreadLocalStorage , current_thread) |
0 | 164 debug_only(VMNativeEntryWrapper __vew;) |
165 | |
166 oop thread_oop = JNIHandles::resolve_external_guard(thread); | |
167 if (thread_oop == NULL) { | |
168 return JVMTI_ERROR_INVALID_THREAD; | |
169 } | |
1142 | 170 if (!thread_oop->is_a(SystemDictionary::Thread_klass())) { |
0 | 171 return JVMTI_ERROR_INVALID_THREAD; |
172 } | |
173 JavaThread* java_thread = java_lang_Thread::thread(thread_oop); | |
174 if (java_thread == NULL) { | |
175 return JVMTI_ERROR_THREAD_NOT_ALIVE; | |
176 } | |
177 JvmtiThreadState* state = java_thread->jvmti_thread_state(); | |
178 *data_ptr = (state == NULL) ? NULL : | |
179 state->env_thread_state(this)->get_agent_thread_local_storage_data(); | |
180 } | |
181 return JVMTI_ERROR_NONE; | |
182 } /* end GetThreadLocalStorage */ | |
183 | |
184 // | |
185 // Class functions | |
186 // | |
187 | |
188 // class_count_ptr - pre-checked for NULL | |
189 // classes_ptr - pre-checked for NULL | |
190 jvmtiError | |
191 JvmtiEnv::GetLoadedClasses(jint* class_count_ptr, jclass** classes_ptr) { | |
192 return JvmtiGetLoadedClasses::getLoadedClasses(this, class_count_ptr, classes_ptr); | |
193 } /* end GetLoadedClasses */ | |
194 | |
195 | |
196 // initiating_loader - NULL is a valid value, must be checked | |
197 // class_count_ptr - pre-checked for NULL | |
198 // classes_ptr - pre-checked for NULL | |
199 jvmtiError | |
200 JvmtiEnv::GetClassLoaderClasses(jobject initiating_loader, jint* class_count_ptr, jclass** classes_ptr) { | |
201 return JvmtiGetLoadedClasses::getClassLoaderClasses(this, initiating_loader, | |
202 class_count_ptr, classes_ptr); | |
203 } /* end GetClassLoaderClasses */ | |
204 | |
205 // k_mirror - may be primitive, this must be checked | |
206 // is_modifiable_class_ptr - pre-checked for NULL | |
207 jvmtiError | |
208 JvmtiEnv::IsModifiableClass(oop k_mirror, jboolean* is_modifiable_class_ptr) { | |
209 *is_modifiable_class_ptr = VM_RedefineClasses::is_modifiable_class(k_mirror)? | |
210 JNI_TRUE : JNI_FALSE; | |
211 return JVMTI_ERROR_NONE; | |
212 } /* end IsModifiableClass */ | |
213 | |
214 // class_count - pre-checked to be greater than or equal to 0 | |
215 // classes - pre-checked for NULL | |
216 jvmtiError | |
217 JvmtiEnv::RetransformClasses(jint class_count, const jclass* classes) { | |
218 //TODO: add locking | |
219 | |
220 int index; | |
221 JavaThread* current_thread = JavaThread::current(); | |
222 ResourceMark rm(current_thread); | |
223 | |
224 jvmtiClassDefinition* class_definitions = | |
225 NEW_RESOURCE_ARRAY(jvmtiClassDefinition, class_count); | |
226 NULL_CHECK(class_definitions, JVMTI_ERROR_OUT_OF_MEMORY); | |
227 | |
228 for (index = 0; index < class_count; index++) { | |
229 HandleMark hm(current_thread); | |
230 | |
231 jclass jcls = classes[index]; | |
232 oop k_mirror = JNIHandles::resolve_external_guard(jcls); | |
233 if (k_mirror == NULL) { | |
234 return JVMTI_ERROR_INVALID_CLASS; | |
235 } | |
1142 | 236 if (!k_mirror->is_a(SystemDictionary::Class_klass())) { |
0 | 237 return JVMTI_ERROR_INVALID_CLASS; |
238 } | |
239 | |
240 if (java_lang_Class::is_primitive(k_mirror)) { | |
241 return JVMTI_ERROR_UNMODIFIABLE_CLASS; | |
242 } | |
243 | |
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244 Klass* k_oop = java_lang_Class::as_Klass(k_mirror); |
0 | 245 KlassHandle klass(current_thread, k_oop); |
246 | |
247 jint status = klass->jvmti_class_status(); | |
248 if (status & (JVMTI_CLASS_STATUS_ERROR)) { | |
249 return JVMTI_ERROR_INVALID_CLASS; | |
250 } | |
251 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { | |
252 return JVMTI_ERROR_UNMODIFIABLE_CLASS; | |
253 } | |
254 | |
255 instanceKlassHandle ikh(current_thread, k_oop); | |
256 if (ikh->get_cached_class_file_bytes() == NULL) { | |
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257 // Not cached, we need to reconstitute the class file from the |
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258 // VM representation. We don't attach the reconstituted class |
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259 // bytes to the InstanceKlass here because they have not been |
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260 // validated and we're not at a safepoint. |
0 | 261 constantPoolHandle constants(current_thread, ikh->constants()); |
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262 oop cplock = constants->lock(); |
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263 ObjectLocker ol(cplock, current_thread, cplock != NULL); // lock constant pool while we query it |
0 | 264 |
265 JvmtiClassFileReconstituter reconstituter(ikh); | |
266 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
267 return reconstituter.get_error(); | |
268 } | |
269 | |
270 class_definitions[index].class_byte_count = (jint)reconstituter.class_file_size(); | |
271 class_definitions[index].class_bytes = (unsigned char*) | |
272 reconstituter.class_file_bytes(); | |
273 } else { | |
274 // it is cached, get it from the cache | |
275 class_definitions[index].class_byte_count = ikh->get_cached_class_file_len(); | |
276 class_definitions[index].class_bytes = ikh->get_cached_class_file_bytes(); | |
277 } | |
278 class_definitions[index].klass = jcls; | |
279 } | |
280 VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_retransform); | |
281 VMThread::execute(&op); | |
282 return (op.check_error()); | |
283 } /* end RetransformClasses */ | |
284 | |
285 | |
286 // class_count - pre-checked to be greater than or equal to 0 | |
287 // class_definitions - pre-checked for NULL | |
288 jvmtiError | |
289 JvmtiEnv::RedefineClasses(jint class_count, const jvmtiClassDefinition* class_definitions) { | |
290 //TODO: add locking | |
291 VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_redefine); | |
292 VMThread::execute(&op); | |
293 return (op.check_error()); | |
294 } /* end RedefineClasses */ | |
295 | |
296 | |
297 // | |
298 // Object functions | |
299 // | |
300 | |
301 // size_ptr - pre-checked for NULL | |
302 jvmtiError | |
303 JvmtiEnv::GetObjectSize(jobject object, jlong* size_ptr) { | |
304 oop mirror = JNIHandles::resolve_external_guard(object); | |
305 NULL_CHECK(mirror, JVMTI_ERROR_INVALID_OBJECT); | |
306 | |
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307 if (mirror->klass() == SystemDictionary::Class_klass() && |
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308 !java_lang_Class::is_primitive(mirror)) { |
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309 Klass* k = java_lang_Class::as_Klass(mirror); |
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310 assert(k != NULL, "class for non-primitive mirror must exist"); |
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311 *size_ptr = k->size() * wordSize; |
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312 } else { |
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313 *size_ptr = mirror->size() * wordSize; |
0 | 314 } |
315 return JVMTI_ERROR_NONE; | |
316 } /* end GetObjectSize */ | |
317 | |
318 // | |
319 // Method functions | |
320 // | |
321 | |
322 // prefix - NULL is a valid value, must be checked | |
323 jvmtiError | |
324 JvmtiEnv::SetNativeMethodPrefix(const char* prefix) { | |
325 return prefix == NULL? | |
326 SetNativeMethodPrefixes(0, NULL) : | |
327 SetNativeMethodPrefixes(1, (char**)&prefix); | |
328 } /* end SetNativeMethodPrefix */ | |
329 | |
330 | |
331 // prefix_count - pre-checked to be greater than or equal to 0 | |
332 // prefixes - pre-checked for NULL | |
333 jvmtiError | |
334 JvmtiEnv::SetNativeMethodPrefixes(jint prefix_count, char** prefixes) { | |
335 // Have to grab JVMTI thread state lock to be sure that some thread | |
336 // isn't accessing the prefixes at the same time we are setting them. | |
337 // No locks during VM bring-up. | |
338 if (Threads::number_of_threads() == 0) { | |
339 return set_native_method_prefixes(prefix_count, prefixes); | |
340 } else { | |
341 MutexLocker mu(JvmtiThreadState_lock); | |
342 return set_native_method_prefixes(prefix_count, prefixes); | |
343 } | |
344 } /* end SetNativeMethodPrefixes */ | |
345 | |
346 // | |
347 // Event Management functions | |
348 // | |
349 | |
350 // callbacks - NULL is a valid value, must be checked | |
351 // size_of_callbacks - pre-checked to be greater than or equal to 0 | |
352 jvmtiError | |
353 JvmtiEnv::SetEventCallbacks(const jvmtiEventCallbacks* callbacks, jint size_of_callbacks) { | |
354 JvmtiEventController::set_event_callbacks(this, callbacks, size_of_callbacks); | |
355 return JVMTI_ERROR_NONE; | |
356 } /* end SetEventCallbacks */ | |
357 | |
358 | |
359 // event_thread - NULL is a valid value, must be checked | |
360 jvmtiError | |
361 JvmtiEnv::SetEventNotificationMode(jvmtiEventMode mode, jvmtiEvent event_type, jthread event_thread, ...) { | |
362 JavaThread* java_thread = NULL; | |
363 if (event_thread != NULL) { | |
364 oop thread_oop = JNIHandles::resolve_external_guard(event_thread); | |
365 if (thread_oop == NULL) { | |
366 return JVMTI_ERROR_INVALID_THREAD; | |
367 } | |
1142 | 368 if (!thread_oop->is_a(SystemDictionary::Thread_klass())) { |
0 | 369 return JVMTI_ERROR_INVALID_THREAD; |
370 } | |
371 java_thread = java_lang_Thread::thread(thread_oop); | |
372 if (java_thread == NULL) { | |
373 return JVMTI_ERROR_THREAD_NOT_ALIVE; | |
374 } | |
375 } | |
376 | |
377 // event_type must be valid | |
378 if (!JvmtiEventController::is_valid_event_type(event_type)) { | |
379 return JVMTI_ERROR_INVALID_EVENT_TYPE; | |
380 } | |
381 | |
382 // global events cannot be controlled at thread level. | |
383 if (java_thread != NULL && JvmtiEventController::is_global_event(event_type)) { | |
384 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
385 } | |
386 | |
387 bool enabled = (mode == JVMTI_ENABLE); | |
388 | |
389 // assure that needed capabilities are present | |
390 if (enabled && !JvmtiUtil::has_event_capability(event_type, get_capabilities())) { | |
391 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; | |
392 } | |
393 | |
394 if (event_type == JVMTI_EVENT_CLASS_FILE_LOAD_HOOK && enabled) { | |
395 record_class_file_load_hook_enabled(); | |
396 } | |
397 JvmtiEventController::set_user_enabled(this, java_thread, event_type, enabled); | |
398 | |
399 return JVMTI_ERROR_NONE; | |
400 } /* end SetEventNotificationMode */ | |
401 | |
402 // | |
403 // Capability functions | |
404 // | |
405 | |
406 // capabilities_ptr - pre-checked for NULL | |
407 jvmtiError | |
408 JvmtiEnv::GetPotentialCapabilities(jvmtiCapabilities* capabilities_ptr) { | |
409 JvmtiManageCapabilities::get_potential_capabilities(get_capabilities(), | |
410 get_prohibited_capabilities(), | |
411 capabilities_ptr); | |
412 return JVMTI_ERROR_NONE; | |
413 } /* end GetPotentialCapabilities */ | |
414 | |
415 | |
416 // capabilities_ptr - pre-checked for NULL | |
417 jvmtiError | |
418 JvmtiEnv::AddCapabilities(const jvmtiCapabilities* capabilities_ptr) { | |
419 return JvmtiManageCapabilities::add_capabilities(get_capabilities(), | |
420 get_prohibited_capabilities(), | |
421 capabilities_ptr, | |
422 get_capabilities()); | |
423 } /* end AddCapabilities */ | |
424 | |
425 | |
426 // capabilities_ptr - pre-checked for NULL | |
427 jvmtiError | |
428 JvmtiEnv::RelinquishCapabilities(const jvmtiCapabilities* capabilities_ptr) { | |
429 JvmtiManageCapabilities::relinquish_capabilities(get_capabilities(), capabilities_ptr, get_capabilities()); | |
430 return JVMTI_ERROR_NONE; | |
431 } /* end RelinquishCapabilities */ | |
432 | |
433 | |
434 // capabilities_ptr - pre-checked for NULL | |
435 jvmtiError | |
436 JvmtiEnv::GetCapabilities(jvmtiCapabilities* capabilities_ptr) { | |
437 JvmtiManageCapabilities::copy_capabilities(get_capabilities(), capabilities_ptr); | |
438 return JVMTI_ERROR_NONE; | |
439 } /* end GetCapabilities */ | |
440 | |
441 // | |
442 // Class Loader Search functions | |
443 // | |
444 | |
445 // segment - pre-checked for NULL | |
446 jvmtiError | |
447 JvmtiEnv::AddToBootstrapClassLoaderSearch(const char* segment) { | |
448 jvmtiPhase phase = get_phase(); | |
449 if (phase == JVMTI_PHASE_ONLOAD) { | |
450 Arguments::append_sysclasspath(segment); | |
451 return JVMTI_ERROR_NONE; | |
1121 | 452 } else if (use_version_1_0_semantics()) { |
453 // This JvmtiEnv requested version 1.0 semantics and this function | |
454 // is only allowed in the ONLOAD phase in version 1.0 so we need to | |
455 // return an error here. | |
456 return JVMTI_ERROR_WRONG_PHASE; | |
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457 } else if (phase == JVMTI_PHASE_LIVE) { |
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458 // The phase is checked by the wrapper that called this function, |
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459 // but this thread could be racing with the thread that is |
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460 // terminating the VM so we check one more time. |
0 | 461 |
462 // create the zip entry | |
463 ClassPathZipEntry* zip_entry = ClassLoader::create_class_path_zip_entry(segment); | |
464 if (zip_entry == NULL) { | |
465 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
466 } | |
467 | |
468 // lock the loader | |
469 Thread* thread = Thread::current(); | |
470 HandleMark hm; | |
471 Handle loader_lock = Handle(thread, SystemDictionary::system_loader_lock()); | |
472 | |
473 ObjectLocker ol(loader_lock, thread); | |
474 | |
475 // add the jar file to the bootclasspath | |
476 if (TraceClassLoading) { | |
477 tty->print_cr("[Opened %s]", zip_entry->name()); | |
478 } | |
479 ClassLoader::add_to_list(zip_entry); | |
480 return JVMTI_ERROR_NONE; | |
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481 } else { |
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482 return JVMTI_ERROR_WRONG_PHASE; |
0 | 483 } |
484 | |
485 } /* end AddToBootstrapClassLoaderSearch */ | |
486 | |
487 | |
488 // segment - pre-checked for NULL | |
489 jvmtiError | |
490 JvmtiEnv::AddToSystemClassLoaderSearch(const char* segment) { | |
491 jvmtiPhase phase = get_phase(); | |
492 | |
493 if (phase == JVMTI_PHASE_ONLOAD) { | |
494 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
495 if (strcmp("java.class.path", p->key()) == 0) { | |
496 p->append_value(segment); | |
497 break; | |
498 } | |
499 } | |
500 return JVMTI_ERROR_NONE; | |
1120
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501 } else if (phase == JVMTI_PHASE_LIVE) { |
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502 // The phase is checked by the wrapper that called this function, |
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503 // but this thread could be racing with the thread that is |
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504 // terminating the VM so we check one more time. |
0 | 505 HandleMark hm; |
506 | |
507 // create the zip entry (which will open the zip file and hence | |
508 // check that the segment is indeed a zip file). | |
509 ClassPathZipEntry* zip_entry = ClassLoader::create_class_path_zip_entry(segment); | |
510 if (zip_entry == NULL) { | |
511 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
512 } | |
513 delete zip_entry; // no longer needed | |
514 | |
515 // lock the loader | |
516 Thread* THREAD = Thread::current(); | |
517 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); | |
518 | |
519 ObjectLocker ol(loader, THREAD); | |
520 | |
521 // need the path as java.lang.String | |
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522 Handle path = java_lang_String::create_from_platform_dependent_str(segment, THREAD); |
0 | 523 if (HAS_PENDING_EXCEPTION) { |
524 CLEAR_PENDING_EXCEPTION; | |
525 return JVMTI_ERROR_INTERNAL; | |
526 } | |
527 | |
528 instanceKlassHandle loader_ik(THREAD, loader->klass()); | |
529 | |
530 // Invoke the appendToClassPathForInstrumentation method - if the method | |
531 // is not found it means the loader doesn't support adding to the class path | |
532 // in the live phase. | |
533 { | |
534 JavaValue res(T_VOID); | |
535 JavaCalls::call_special(&res, | |
536 loader, | |
537 loader_ik, | |
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538 vmSymbols::appendToClassPathForInstrumentation_name(), |
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539 vmSymbols::appendToClassPathForInstrumentation_signature(), |
0 | 540 path, |
541 THREAD); | |
542 if (HAS_PENDING_EXCEPTION) { | |
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543 Symbol* ex_name = PENDING_EXCEPTION->klass()->name(); |
0 | 544 CLEAR_PENDING_EXCEPTION; |
545 | |
546 if (ex_name == vmSymbols::java_lang_NoSuchMethodError()) { | |
547 return JVMTI_ERROR_CLASS_LOADER_UNSUPPORTED; | |
548 } else { | |
549 return JVMTI_ERROR_INTERNAL; | |
550 } | |
551 } | |
552 } | |
553 | |
554 return JVMTI_ERROR_NONE; | |
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555 } else { |
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556 return JVMTI_ERROR_WRONG_PHASE; |
0 | 557 } |
558 } /* end AddToSystemClassLoaderSearch */ | |
559 | |
560 // | |
561 // General functions | |
562 // | |
563 | |
564 // phase_ptr - pre-checked for NULL | |
565 jvmtiError | |
566 JvmtiEnv::GetPhase(jvmtiPhase* phase_ptr) { | |
567 *phase_ptr = get_phase(); | |
568 return JVMTI_ERROR_NONE; | |
569 } /* end GetPhase */ | |
570 | |
571 | |
572 jvmtiError | |
573 JvmtiEnv::DisposeEnvironment() { | |
574 dispose(); | |
575 return JVMTI_ERROR_NONE; | |
576 } /* end DisposeEnvironment */ | |
577 | |
578 | |
579 // data - NULL is a valid value, must be checked | |
580 jvmtiError | |
581 JvmtiEnv::SetEnvironmentLocalStorage(const void* data) { | |
582 set_env_local_storage(data); | |
583 return JVMTI_ERROR_NONE; | |
584 } /* end SetEnvironmentLocalStorage */ | |
585 | |
586 | |
587 // data_ptr - pre-checked for NULL | |
588 jvmtiError | |
589 JvmtiEnv::GetEnvironmentLocalStorage(void** data_ptr) { | |
590 *data_ptr = (void*)get_env_local_storage(); | |
591 return JVMTI_ERROR_NONE; | |
592 } /* end GetEnvironmentLocalStorage */ | |
593 | |
594 // version_ptr - pre-checked for NULL | |
595 jvmtiError | |
596 JvmtiEnv::GetVersionNumber(jint* version_ptr) { | |
597 *version_ptr = JVMTI_VERSION; | |
598 return JVMTI_ERROR_NONE; | |
599 } /* end GetVersionNumber */ | |
600 | |
601 | |
602 // name_ptr - pre-checked for NULL | |
603 jvmtiError | |
604 JvmtiEnv::GetErrorName(jvmtiError error, char** name_ptr) { | |
605 if (error < JVMTI_ERROR_NONE || error > JVMTI_ERROR_MAX) { | |
606 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
607 } | |
608 const char *name = JvmtiUtil::error_name(error); | |
609 if (name == NULL) { | |
610 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
611 } | |
612 size_t len = strlen(name) + 1; | |
613 jvmtiError err = allocate(len, (unsigned char**)name_ptr); | |
614 if (err == JVMTI_ERROR_NONE) { | |
615 memcpy(*name_ptr, name, len); | |
616 } | |
617 return err; | |
618 } /* end GetErrorName */ | |
619 | |
620 | |
621 jvmtiError | |
622 JvmtiEnv::SetVerboseFlag(jvmtiVerboseFlag flag, jboolean value) { | |
623 switch (flag) { | |
624 case JVMTI_VERBOSE_OTHER: | |
625 // ignore | |
626 break; | |
627 case JVMTI_VERBOSE_CLASS: | |
628 TraceClassLoading = value != 0; | |
629 TraceClassUnloading = value != 0; | |
630 break; | |
631 case JVMTI_VERBOSE_GC: | |
632 PrintGC = value != 0; | |
633 break; | |
634 case JVMTI_VERBOSE_JNI: | |
635 PrintJNIResolving = value != 0; | |
636 break; | |
637 default: | |
638 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
639 }; | |
640 return JVMTI_ERROR_NONE; | |
641 } /* end SetVerboseFlag */ | |
642 | |
643 | |
644 // format_ptr - pre-checked for NULL | |
645 jvmtiError | |
646 JvmtiEnv::GetJLocationFormat(jvmtiJlocationFormat* format_ptr) { | |
647 *format_ptr = JVMTI_JLOCATION_JVMBCI; | |
648 return JVMTI_ERROR_NONE; | |
649 } /* end GetJLocationFormat */ | |
650 | |
651 // | |
652 // Thread functions | |
653 // | |
654 | |
655 // Threads_lock NOT held | |
656 // thread - NOT pre-checked | |
657 // thread_state_ptr - pre-checked for NULL | |
658 jvmtiError | |
659 JvmtiEnv::GetThreadState(jthread thread, jint* thread_state_ptr) { | |
660 jint state; | |
661 oop thread_oop; | |
662 JavaThread* thr; | |
663 | |
664 if (thread == NULL) { | |
665 thread_oop = JavaThread::current()->threadObj(); | |
666 } else { | |
667 thread_oop = JNIHandles::resolve_external_guard(thread); | |
668 } | |
669 | |
1142 | 670 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) { |
0 | 671 return JVMTI_ERROR_INVALID_THREAD; |
672 } | |
673 | |
674 // get most state bits | |
675 state = (jint)java_lang_Thread::get_thread_status(thread_oop); | |
676 | |
677 // add more state bits | |
678 thr = java_lang_Thread::thread(thread_oop); | |
679 if (thr != NULL) { | |
680 JavaThreadState jts = thr->thread_state(); | |
681 | |
682 if (thr->is_being_ext_suspended()) { | |
683 state |= JVMTI_THREAD_STATE_SUSPENDED; | |
684 } | |
685 if (jts == _thread_in_native) { | |
686 state |= JVMTI_THREAD_STATE_IN_NATIVE; | |
687 } | |
688 OSThread* osThread = thr->osthread(); | |
689 if (osThread != NULL && osThread->interrupted()) { | |
690 state |= JVMTI_THREAD_STATE_INTERRUPTED; | |
691 } | |
692 } | |
693 | |
694 *thread_state_ptr = state; | |
695 return JVMTI_ERROR_NONE; | |
696 } /* end GetThreadState */ | |
697 | |
698 | |
699 // thread_ptr - pre-checked for NULL | |
700 jvmtiError | |
701 JvmtiEnv::GetCurrentThread(jthread* thread_ptr) { | |
702 JavaThread* current_thread = JavaThread::current(); | |
703 *thread_ptr = (jthread)JNIHandles::make_local(current_thread, current_thread->threadObj()); | |
704 return JVMTI_ERROR_NONE; | |
705 } /* end GetCurrentThread */ | |
706 | |
707 | |
708 // threads_count_ptr - pre-checked for NULL | |
709 // threads_ptr - pre-checked for NULL | |
710 jvmtiError | |
711 JvmtiEnv::GetAllThreads(jint* threads_count_ptr, jthread** threads_ptr) { | |
712 int nthreads = 0; | |
713 Handle *thread_objs = NULL; | |
714 ResourceMark rm; | |
715 HandleMark hm; | |
716 | |
717 // enumerate threads (including agent threads) | |
718 ThreadsListEnumerator tle(Thread::current(), true); | |
719 nthreads = tle.num_threads(); | |
720 *threads_count_ptr = nthreads; | |
721 | |
722 if (nthreads == 0) { | |
723 *threads_ptr = NULL; | |
724 return JVMTI_ERROR_NONE; | |
725 } | |
726 | |
727 thread_objs = NEW_RESOURCE_ARRAY(Handle, nthreads); | |
728 NULL_CHECK(thread_objs, JVMTI_ERROR_OUT_OF_MEMORY); | |
729 | |
730 for (int i=0; i < nthreads; i++) { | |
731 thread_objs[i] = Handle(tle.get_threadObj(i)); | |
732 } | |
733 | |
734 // have to make global handles outside of Threads_lock | |
735 jthread *jthreads = new_jthreadArray(nthreads, thread_objs); | |
736 NULL_CHECK(jthreads, JVMTI_ERROR_OUT_OF_MEMORY); | |
737 | |
738 *threads_ptr = jthreads; | |
739 return JVMTI_ERROR_NONE; | |
740 } /* end GetAllThreads */ | |
741 | |
742 | |
743 // Threads_lock NOT held, java_thread not protected by lock | |
744 // java_thread - pre-checked | |
745 jvmtiError | |
746 JvmtiEnv::SuspendThread(JavaThread* java_thread) { | |
747 // don't allow hidden thread suspend request. | |
748 if (java_thread->is_hidden_from_external_view()) { | |
749 return (JVMTI_ERROR_NONE); | |
750 } | |
751 | |
752 { | |
753 MutexLockerEx ml(java_thread->SR_lock(), Mutex::_no_safepoint_check_flag); | |
754 if (java_thread->is_external_suspend()) { | |
755 // don't allow nested external suspend requests. | |
756 return (JVMTI_ERROR_THREAD_SUSPENDED); | |
757 } | |
758 if (java_thread->is_exiting()) { // thread is in the process of exiting | |
759 return (JVMTI_ERROR_THREAD_NOT_ALIVE); | |
760 } | |
761 java_thread->set_external_suspend(); | |
762 } | |
763 | |
764 if (!JvmtiSuspendControl::suspend(java_thread)) { | |
765 // the thread was in the process of exiting | |
766 return (JVMTI_ERROR_THREAD_NOT_ALIVE); | |
767 } | |
768 return JVMTI_ERROR_NONE; | |
769 } /* end SuspendThread */ | |
770 | |
771 | |
772 // request_count - pre-checked to be greater than or equal to 0 | |
773 // request_list - pre-checked for NULL | |
774 // results - pre-checked for NULL | |
775 jvmtiError | |
776 JvmtiEnv::SuspendThreadList(jint request_count, const jthread* request_list, jvmtiError* results) { | |
777 int needSafepoint = 0; // > 0 if we need a safepoint | |
778 for (int i = 0; i < request_count; i++) { | |
779 JavaThread *java_thread = get_JavaThread(request_list[i]); | |
780 if (java_thread == NULL) { | |
781 results[i] = JVMTI_ERROR_INVALID_THREAD; | |
782 continue; | |
783 } | |
784 // the thread has not yet run or has exited (not on threads list) | |
785 if (java_thread->threadObj() == NULL) { | |
786 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
787 continue; | |
788 } | |
789 if (java_lang_Thread::thread(java_thread->threadObj()) == NULL) { | |
790 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
791 continue; | |
792 } | |
793 // don't allow hidden thread suspend request. | |
794 if (java_thread->is_hidden_from_external_view()) { | |
795 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend | |
796 continue; | |
797 } | |
798 | |
799 { | |
800 MutexLockerEx ml(java_thread->SR_lock(), Mutex::_no_safepoint_check_flag); | |
801 if (java_thread->is_external_suspend()) { | |
802 // don't allow nested external suspend requests. | |
803 results[i] = JVMTI_ERROR_THREAD_SUSPENDED; | |
804 continue; | |
805 } | |
806 if (java_thread->is_exiting()) { // thread is in the process of exiting | |
807 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
808 continue; | |
809 } | |
810 java_thread->set_external_suspend(); | |
811 } | |
812 if (java_thread->thread_state() == _thread_in_native) { | |
813 // We need to try and suspend native threads here. Threads in | |
814 // other states will self-suspend on their next transition. | |
815 if (!JvmtiSuspendControl::suspend(java_thread)) { | |
816 // The thread was in the process of exiting. Force another | |
817 // safepoint to make sure that this thread transitions. | |
818 needSafepoint++; | |
819 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; | |
820 continue; | |
821 } | |
822 } else { | |
823 needSafepoint++; | |
824 } | |
825 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend | |
826 } | |
827 if (needSafepoint > 0) { | |
828 VM_ForceSafepoint vfs; | |
829 VMThread::execute(&vfs); | |
830 } | |
831 // per-thread suspend results returned via results parameter | |
832 return JVMTI_ERROR_NONE; | |
833 } /* end SuspendThreadList */ | |
834 | |
835 | |
836 // Threads_lock NOT held, java_thread not protected by lock | |
837 // java_thread - pre-checked | |
838 jvmtiError | |
839 JvmtiEnv::ResumeThread(JavaThread* java_thread) { | |
840 // don't allow hidden thread resume request. | |
841 if (java_thread->is_hidden_from_external_view()) { | |
842 return JVMTI_ERROR_NONE; | |
843 } | |
844 | |
845 if (!java_thread->is_being_ext_suspended()) { | |
846 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
847 } | |
848 | |
849 if (!JvmtiSuspendControl::resume(java_thread)) { | |
850 return JVMTI_ERROR_INTERNAL; | |
851 } | |
852 return JVMTI_ERROR_NONE; | |
853 } /* end ResumeThread */ | |
854 | |
855 | |
856 // request_count - pre-checked to be greater than or equal to 0 | |
857 // request_list - pre-checked for NULL | |
858 // results - pre-checked for NULL | |
859 jvmtiError | |
860 JvmtiEnv::ResumeThreadList(jint request_count, const jthread* request_list, jvmtiError* results) { | |
861 for (int i = 0; i < request_count; i++) { | |
862 JavaThread *java_thread = get_JavaThread(request_list[i]); | |
863 if (java_thread == NULL) { | |
864 results[i] = JVMTI_ERROR_INVALID_THREAD; | |
865 continue; | |
866 } | |
867 // don't allow hidden thread resume request. | |
868 if (java_thread->is_hidden_from_external_view()) { | |
869 results[i] = JVMTI_ERROR_NONE; // indicate successful resume | |
870 continue; | |
871 } | |
872 if (!java_thread->is_being_ext_suspended()) { | |
873 results[i] = JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
874 continue; | |
875 } | |
876 | |
877 if (!JvmtiSuspendControl::resume(java_thread)) { | |
878 results[i] = JVMTI_ERROR_INTERNAL; | |
879 continue; | |
880 } | |
881 | |
882 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend | |
883 } | |
884 // per-thread resume results returned via results parameter | |
885 return JVMTI_ERROR_NONE; | |
886 } /* end ResumeThreadList */ | |
887 | |
888 | |
889 // Threads_lock NOT held, java_thread not protected by lock | |
890 // java_thread - pre-checked | |
891 jvmtiError | |
892 JvmtiEnv::StopThread(JavaThread* java_thread, jobject exception) { | |
893 oop e = JNIHandles::resolve_external_guard(exception); | |
894 NULL_CHECK(e, JVMTI_ERROR_NULL_POINTER); | |
895 | |
896 JavaThread::send_async_exception(java_thread->threadObj(), e); | |
897 | |
898 return JVMTI_ERROR_NONE; | |
899 | |
900 } /* end StopThread */ | |
901 | |
902 | |
903 // Threads_lock NOT held | |
904 // thread - NOT pre-checked | |
905 jvmtiError | |
906 JvmtiEnv::InterruptThread(jthread thread) { | |
907 oop thread_oop = JNIHandles::resolve_external_guard(thread); | |
1142 | 908 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) |
0 | 909 return JVMTI_ERROR_INVALID_THREAD; |
910 | |
911 JavaThread* current_thread = JavaThread::current(); | |
912 | |
913 // Todo: this is a duplicate of JVM_Interrupt; share code in future | |
914 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
915 MutexLockerEx ml(current_thread->threadObj() == thread_oop ? NULL : Threads_lock); | |
916 // We need to re-resolve the java_thread, since a GC might have happened during the | |
917 // acquire of the lock | |
918 | |
919 JavaThread* java_thread = java_lang_Thread::thread(JNIHandles::resolve_external_guard(thread)); | |
920 NULL_CHECK(java_thread, JVMTI_ERROR_THREAD_NOT_ALIVE); | |
921 | |
922 Thread::interrupt(java_thread); | |
923 | |
924 return JVMTI_ERROR_NONE; | |
925 } /* end InterruptThread */ | |
926 | |
927 | |
928 // Threads_lock NOT held | |
929 // thread - NOT pre-checked | |
930 // info_ptr - pre-checked for NULL | |
931 jvmtiError | |
932 JvmtiEnv::GetThreadInfo(jthread thread, jvmtiThreadInfo* info_ptr) { | |
933 ResourceMark rm; | |
934 HandleMark hm; | |
935 | |
936 JavaThread* current_thread = JavaThread::current(); | |
937 | |
938 // if thread is NULL the current thread is used | |
939 oop thread_oop; | |
940 if (thread == NULL) { | |
941 thread_oop = current_thread->threadObj(); | |
942 } else { | |
943 thread_oop = JNIHandles::resolve_external_guard(thread); | |
944 } | |
1142 | 945 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) |
0 | 946 return JVMTI_ERROR_INVALID_THREAD; |
947 | |
948 Handle thread_obj(current_thread, thread_oop); | |
949 typeArrayHandle name; | |
950 ThreadPriority priority; | |
951 Handle thread_group; | |
952 Handle context_class_loader; | |
953 bool is_daemon; | |
954 | |
955 { MutexLocker mu(Threads_lock); | |
956 | |
957 name = typeArrayHandle(current_thread, java_lang_Thread::name(thread_obj())); | |
958 priority = java_lang_Thread::priority(thread_obj()); | |
959 thread_group = Handle(current_thread, java_lang_Thread::threadGroup(thread_obj())); | |
960 is_daemon = java_lang_Thread::is_daemon(thread_obj()); | |
961 | |
962 oop loader = java_lang_Thread::context_class_loader(thread_obj()); | |
963 context_class_loader = Handle(current_thread, loader); | |
964 } | |
965 { const char *n; | |
966 | |
967 if (name() != NULL) { | |
968 n = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length()); | |
969 } else { | |
970 n = UNICODE::as_utf8(NULL, 0); | |
971 } | |
972 | |
973 info_ptr->name = (char *) jvmtiMalloc(strlen(n)+1); | |
974 if (info_ptr->name == NULL) | |
975 return JVMTI_ERROR_OUT_OF_MEMORY; | |
976 | |
977 strcpy(info_ptr->name, n); | |
978 } | |
979 info_ptr->is_daemon = is_daemon; | |
980 info_ptr->priority = priority; | |
981 | |
982 info_ptr->context_class_loader = (context_class_loader.is_null()) ? NULL : | |
983 jni_reference(context_class_loader); | |
984 info_ptr->thread_group = jni_reference(thread_group); | |
985 | |
986 return JVMTI_ERROR_NONE; | |
987 } /* end GetThreadInfo */ | |
988 | |
989 | |
990 // Threads_lock NOT held, java_thread not protected by lock | |
991 // java_thread - pre-checked | |
992 // owned_monitor_count_ptr - pre-checked for NULL | |
993 // owned_monitors_ptr - pre-checked for NULL | |
994 jvmtiError | |
995 JvmtiEnv::GetOwnedMonitorInfo(JavaThread* java_thread, jint* owned_monitor_count_ptr, jobject** owned_monitors_ptr) { | |
996 jvmtiError err = JVMTI_ERROR_NONE; | |
997 JavaThread* calling_thread = JavaThread::current(); | |
998 | |
999 // growable array of jvmti monitors info on the C-heap | |
1000 GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list = | |
6197 | 1001 new (ResourceObj::C_HEAP, mtInternal) GrowableArray<jvmtiMonitorStackDepthInfo*>(1, true); |
0 | 1002 |
1003 uint32_t debug_bits = 0; | |
1004 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
1005 err = get_owned_monitors(calling_thread, java_thread, owned_monitors_list); | |
1006 } else { | |
1007 // JVMTI get monitors info at safepoint. Do not require target thread to | |
1008 // be suspended. | |
1009 VM_GetOwnedMonitorInfo op(this, calling_thread, java_thread, owned_monitors_list); | |
1010 VMThread::execute(&op); | |
1011 err = op.result(); | |
1012 } | |
1013 jint owned_monitor_count = owned_monitors_list->length(); | |
1014 if (err == JVMTI_ERROR_NONE) { | |
1015 if ((err = allocate(owned_monitor_count * sizeof(jobject *), | |
1016 (unsigned char**)owned_monitors_ptr)) == JVMTI_ERROR_NONE) { | |
1017 // copy into the returned array | |
1018 for (int i = 0; i < owned_monitor_count; i++) { | |
1019 (*owned_monitors_ptr)[i] = | |
1020 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->monitor; | |
1021 } | |
1022 *owned_monitor_count_ptr = owned_monitor_count; | |
1023 } | |
1024 } | |
1025 // clean up. | |
1026 for (int i = 0; i < owned_monitor_count; i++) { | |
1027 deallocate((unsigned char*)owned_monitors_list->at(i)); | |
1028 } | |
1029 delete owned_monitors_list; | |
1030 | |
1031 return err; | |
1032 } /* end GetOwnedMonitorInfo */ | |
1033 | |
1034 | |
1035 // Threads_lock NOT held, java_thread not protected by lock | |
1036 // java_thread - pre-checked | |
1037 // monitor_info_count_ptr - pre-checked for NULL | |
1038 // monitor_info_ptr - pre-checked for NULL | |
1039 jvmtiError | |
1040 JvmtiEnv::GetOwnedMonitorStackDepthInfo(JavaThread* java_thread, jint* monitor_info_count_ptr, jvmtiMonitorStackDepthInfo** monitor_info_ptr) { | |
1041 jvmtiError err = JVMTI_ERROR_NONE; | |
1042 JavaThread* calling_thread = JavaThread::current(); | |
1043 | |
1044 // growable array of jvmti monitors info on the C-heap | |
1045 GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list = | |
6197 | 1046 new (ResourceObj::C_HEAP, mtInternal) GrowableArray<jvmtiMonitorStackDepthInfo*>(1, true); |
0 | 1047 |
1048 uint32_t debug_bits = 0; | |
1049 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
1050 err = get_owned_monitors(calling_thread, java_thread, owned_monitors_list); | |
1051 } else { | |
1052 // JVMTI get owned monitors info at safepoint. Do not require target thread to | |
1053 // be suspended. | |
1054 VM_GetOwnedMonitorInfo op(this, calling_thread, java_thread, owned_monitors_list); | |
1055 VMThread::execute(&op); | |
1056 err = op.result(); | |
1057 } | |
1058 | |
1059 jint owned_monitor_count = owned_monitors_list->length(); | |
1060 if (err == JVMTI_ERROR_NONE) { | |
1061 if ((err = allocate(owned_monitor_count * sizeof(jvmtiMonitorStackDepthInfo), | |
1062 (unsigned char**)monitor_info_ptr)) == JVMTI_ERROR_NONE) { | |
1063 // copy to output array. | |
1064 for (int i = 0; i < owned_monitor_count; i++) { | |
1065 (*monitor_info_ptr)[i].monitor = | |
1066 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->monitor; | |
1067 (*monitor_info_ptr)[i].stack_depth = | |
1068 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->stack_depth; | |
1069 } | |
1070 } | |
1071 *monitor_info_count_ptr = owned_monitor_count; | |
1072 } | |
1073 | |
1074 // clean up. | |
1075 for (int i = 0; i < owned_monitor_count; i++) { | |
1076 deallocate((unsigned char*)owned_monitors_list->at(i)); | |
1077 } | |
1078 delete owned_monitors_list; | |
1079 | |
1080 return err; | |
1081 } /* end GetOwnedMonitorStackDepthInfo */ | |
1082 | |
1083 | |
1084 // Threads_lock NOT held, java_thread not protected by lock | |
1085 // java_thread - pre-checked | |
1086 // monitor_ptr - pre-checked for NULL | |
1087 jvmtiError | |
1088 JvmtiEnv::GetCurrentContendedMonitor(JavaThread* java_thread, jobject* monitor_ptr) { | |
1089 jvmtiError err = JVMTI_ERROR_NONE; | |
1090 uint32_t debug_bits = 0; | |
1091 JavaThread* calling_thread = JavaThread::current(); | |
1092 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
1093 err = get_current_contended_monitor(calling_thread, java_thread, monitor_ptr); | |
1094 } else { | |
1095 // get contended monitor information at safepoint. | |
1096 VM_GetCurrentContendedMonitor op(this, calling_thread, java_thread, monitor_ptr); | |
1097 VMThread::execute(&op); | |
1098 err = op.result(); | |
1099 } | |
1100 return err; | |
1101 } /* end GetCurrentContendedMonitor */ | |
1102 | |
1103 | |
1104 // Threads_lock NOT held | |
1105 // thread - NOT pre-checked | |
1106 // proc - pre-checked for NULL | |
1107 // arg - NULL is a valid value, must be checked | |
1108 jvmtiError | |
1109 JvmtiEnv::RunAgentThread(jthread thread, jvmtiStartFunction proc, const void* arg, jint priority) { | |
1110 oop thread_oop = JNIHandles::resolve_external_guard(thread); | |
1142 | 1111 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) { |
0 | 1112 return JVMTI_ERROR_INVALID_THREAD; |
1113 } | |
1114 if (priority < JVMTI_THREAD_MIN_PRIORITY || priority > JVMTI_THREAD_MAX_PRIORITY) { | |
1115 return JVMTI_ERROR_INVALID_PRIORITY; | |
1116 } | |
1117 | |
1118 //Thread-self | |
1119 JavaThread* current_thread = JavaThread::current(); | |
1120 | |
1121 Handle thread_hndl(current_thread, thread_oop); | |
1122 { | |
1123 MutexLocker mu(Threads_lock); // grab Threads_lock | |
1124 | |
1125 JvmtiAgentThread *new_thread = new JvmtiAgentThread(this, proc, arg); | |
1126 | |
1127 // At this point it may be possible that no osthread was created for the | |
1128 // JavaThread due to lack of memory. | |
1129 if (new_thread == NULL || new_thread->osthread() == NULL) { | |
1130 if (new_thread) delete new_thread; | |
1131 return JVMTI_ERROR_OUT_OF_MEMORY; | |
1132 } | |
1133 | |
1134 java_lang_Thread::set_thread(thread_hndl(), new_thread); | |
1135 java_lang_Thread::set_priority(thread_hndl(), (ThreadPriority)priority); | |
1136 java_lang_Thread::set_daemon(thread_hndl()); | |
1137 | |
1138 new_thread->set_threadObj(thread_hndl()); | |
1139 Threads::add(new_thread); | |
1140 Thread::start(new_thread); | |
1141 } // unlock Threads_lock | |
1142 | |
1143 return JVMTI_ERROR_NONE; | |
1144 } /* end RunAgentThread */ | |
1145 | |
1146 // | |
1147 // Thread Group functions | |
1148 // | |
1149 | |
1150 // group_count_ptr - pre-checked for NULL | |
1151 // groups_ptr - pre-checked for NULL | |
1152 jvmtiError | |
1153 JvmtiEnv::GetTopThreadGroups(jint* group_count_ptr, jthreadGroup** groups_ptr) { | |
1154 JavaThread* current_thread = JavaThread::current(); | |
1155 | |
1156 // Only one top level thread group now. | |
1157 *group_count_ptr = 1; | |
1158 | |
1159 // Allocate memory to store global-refs to the thread groups. | |
1160 // Assume this area is freed by caller. | |
1161 *groups_ptr = (jthreadGroup *) jvmtiMalloc((sizeof(jthreadGroup)) * (*group_count_ptr)); | |
1162 | |
1163 NULL_CHECK(*groups_ptr, JVMTI_ERROR_OUT_OF_MEMORY); | |
1164 | |
1165 // Convert oop to Handle, then convert Handle to global-ref. | |
1166 { | |
1167 HandleMark hm(current_thread); | |
1168 Handle system_thread_group(current_thread, Universe::system_thread_group()); | |
1169 *groups_ptr[0] = jni_reference(system_thread_group); | |
1170 } | |
1171 | |
1172 return JVMTI_ERROR_NONE; | |
1173 } /* end GetTopThreadGroups */ | |
1174 | |
1175 | |
1176 // info_ptr - pre-checked for NULL | |
1177 jvmtiError | |
1178 JvmtiEnv::GetThreadGroupInfo(jthreadGroup group, jvmtiThreadGroupInfo* info_ptr) { | |
1179 ResourceMark rm; | |
1180 HandleMark hm; | |
1181 | |
1182 JavaThread* current_thread = JavaThread::current(); | |
1183 | |
1184 Handle group_obj (current_thread, JNIHandles::resolve_external_guard(group)); | |
1185 NULL_CHECK(group_obj(), JVMTI_ERROR_INVALID_THREAD_GROUP); | |
1186 | |
1187 typeArrayHandle name; | |
1188 Handle parent_group; | |
1189 bool is_daemon; | |
1190 ThreadPriority max_priority; | |
1191 | |
1192 { MutexLocker mu(Threads_lock); | |
1193 | |
1194 name = typeArrayHandle(current_thread, | |
1195 java_lang_ThreadGroup::name(group_obj())); | |
1196 parent_group = Handle(current_thread, java_lang_ThreadGroup::parent(group_obj())); | |
1197 is_daemon = java_lang_ThreadGroup::is_daemon(group_obj()); | |
1198 max_priority = java_lang_ThreadGroup::maxPriority(group_obj()); | |
1199 } | |
1200 | |
1201 info_ptr->is_daemon = is_daemon; | |
1202 info_ptr->max_priority = max_priority; | |
1203 info_ptr->parent = jni_reference(parent_group); | |
1204 | |
1205 if (name() != NULL) { | |
1206 const char* n = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length()); | |
1207 info_ptr->name = (char *)jvmtiMalloc(strlen(n)+1); | |
1208 NULL_CHECK(info_ptr->name, JVMTI_ERROR_OUT_OF_MEMORY); | |
1209 strcpy(info_ptr->name, n); | |
1210 } else { | |
1211 info_ptr->name = NULL; | |
1212 } | |
1213 | |
1214 return JVMTI_ERROR_NONE; | |
1215 } /* end GetThreadGroupInfo */ | |
1216 | |
1217 | |
1218 // thread_count_ptr - pre-checked for NULL | |
1219 // threads_ptr - pre-checked for NULL | |
1220 // group_count_ptr - pre-checked for NULL | |
1221 // groups_ptr - pre-checked for NULL | |
1222 jvmtiError | |
1223 JvmtiEnv::GetThreadGroupChildren(jthreadGroup group, jint* thread_count_ptr, jthread** threads_ptr, jint* group_count_ptr, jthreadGroup** groups_ptr) { | |
1224 JavaThread* current_thread = JavaThread::current(); | |
1225 oop group_obj = (oop) JNIHandles::resolve_external_guard(group); | |
1226 NULL_CHECK(group_obj, JVMTI_ERROR_INVALID_THREAD_GROUP); | |
1227 | |
1228 Handle *thread_objs = NULL; | |
1229 Handle *group_objs = NULL; | |
1230 int nthreads = 0; | |
1231 int ngroups = 0; | |
1232 int hidden_threads = 0; | |
1233 | |
1234 ResourceMark rm; | |
1235 HandleMark hm; | |
1236 | |
1237 Handle group_hdl(current_thread, group_obj); | |
1238 | |
1239 { MutexLocker mu(Threads_lock); | |
1240 | |
1241 nthreads = java_lang_ThreadGroup::nthreads(group_hdl()); | |
1242 ngroups = java_lang_ThreadGroup::ngroups(group_hdl()); | |
1243 | |
1244 if (nthreads > 0) { | |
1245 objArrayOop threads = java_lang_ThreadGroup::threads(group_hdl()); | |
1246 assert(nthreads <= threads->length(), "too many threads"); | |
1247 thread_objs = NEW_RESOURCE_ARRAY(Handle,nthreads); | |
1248 for (int i=0, j=0; i<nthreads; i++) { | |
1249 oop thread_obj = threads->obj_at(i); | |
1250 assert(thread_obj != NULL, "thread_obj is NULL"); | |
1251 JavaThread *javathread = java_lang_Thread::thread(thread_obj); | |
1252 // Filter out hidden java threads. | |
1253 if (javathread != NULL && javathread->is_hidden_from_external_view()) { | |
1254 hidden_threads++; | |
1255 continue; | |
1256 } | |
1257 thread_objs[j++] = Handle(current_thread, thread_obj); | |
1258 } | |
1259 nthreads -= hidden_threads; | |
1260 } | |
1261 if (ngroups > 0) { | |
1262 objArrayOop groups = java_lang_ThreadGroup::groups(group_hdl()); | |
1263 assert(ngroups <= groups->length(), "too many threads"); | |
1264 group_objs = NEW_RESOURCE_ARRAY(Handle,ngroups); | |
1265 for (int i=0; i<ngroups; i++) { | |
1266 oop group_obj = groups->obj_at(i); | |
1267 assert(group_obj != NULL, "group_obj != NULL"); | |
1268 group_objs[i] = Handle(current_thread, group_obj); | |
1269 } | |
1270 } | |
1271 } | |
1272 | |
1273 // have to make global handles outside of Threads_lock | |
1274 *group_count_ptr = ngroups; | |
1275 *thread_count_ptr = nthreads; | |
1276 *threads_ptr = new_jthreadArray(nthreads, thread_objs); | |
1277 *groups_ptr = new_jthreadGroupArray(ngroups, group_objs); | |
1278 if ((nthreads > 0) && (*threads_ptr == NULL)) { | |
1279 return JVMTI_ERROR_OUT_OF_MEMORY; | |
1280 } | |
1281 if ((ngroups > 0) && (*groups_ptr == NULL)) { | |
1282 return JVMTI_ERROR_OUT_OF_MEMORY; | |
1283 } | |
1284 | |
1285 return JVMTI_ERROR_NONE; | |
1286 } /* end GetThreadGroupChildren */ | |
1287 | |
1288 | |
1289 // | |
1290 // Stack Frame functions | |
1291 // | |
1292 | |
1293 // Threads_lock NOT held, java_thread not protected by lock | |
1294 // java_thread - pre-checked | |
1295 // max_frame_count - pre-checked to be greater than or equal to 0 | |
1296 // frame_buffer - pre-checked for NULL | |
1297 // count_ptr - pre-checked for NULL | |
1298 jvmtiError | |
1299 JvmtiEnv::GetStackTrace(JavaThread* java_thread, jint start_depth, jint max_frame_count, jvmtiFrameInfo* frame_buffer, jint* count_ptr) { | |
1300 jvmtiError err = JVMTI_ERROR_NONE; | |
1301 uint32_t debug_bits = 0; | |
1302 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
1303 err = get_stack_trace(java_thread, start_depth, max_frame_count, frame_buffer, count_ptr); | |
1304 } else { | |
1305 // JVMTI get stack trace at safepoint. Do not require target thread to | |
1306 // be suspended. | |
1307 VM_GetStackTrace op(this, java_thread, start_depth, max_frame_count, frame_buffer, count_ptr); | |
1308 VMThread::execute(&op); | |
1309 err = op.result(); | |
1310 } | |
1311 | |
1312 return err; | |
1313 } /* end GetStackTrace */ | |
1314 | |
1315 | |
1316 // max_frame_count - pre-checked to be greater than or equal to 0 | |
1317 // stack_info_ptr - pre-checked for NULL | |
1318 // thread_count_ptr - pre-checked for NULL | |
1319 jvmtiError | |
1320 JvmtiEnv::GetAllStackTraces(jint max_frame_count, jvmtiStackInfo** stack_info_ptr, jint* thread_count_ptr) { | |
1321 jvmtiError err = JVMTI_ERROR_NONE; | |
1322 JavaThread* calling_thread = JavaThread::current(); | |
1323 | |
1324 // JVMTI get stack traces at safepoint. | |
1325 VM_GetAllStackTraces op(this, calling_thread, max_frame_count); | |
1326 VMThread::execute(&op); | |
1327 *thread_count_ptr = op.final_thread_count(); | |
1328 *stack_info_ptr = op.stack_info(); | |
1329 err = op.result(); | |
1330 return err; | |
1331 } /* end GetAllStackTraces */ | |
1332 | |
1333 | |
1334 // thread_count - pre-checked to be greater than or equal to 0 | |
1335 // thread_list - pre-checked for NULL | |
1336 // max_frame_count - pre-checked to be greater than or equal to 0 | |
1337 // stack_info_ptr - pre-checked for NULL | |
1338 jvmtiError | |
1339 JvmtiEnv::GetThreadListStackTraces(jint thread_count, const jthread* thread_list, jint max_frame_count, jvmtiStackInfo** stack_info_ptr) { | |
1340 jvmtiError err = JVMTI_ERROR_NONE; | |
1341 // JVMTI get stack traces at safepoint. | |
1342 VM_GetThreadListStackTraces op(this, thread_count, thread_list, max_frame_count); | |
1343 VMThread::execute(&op); | |
1344 err = op.result(); | |
1345 if (err == JVMTI_ERROR_NONE) { | |
1346 *stack_info_ptr = op.stack_info(); | |
1347 } | |
1348 return err; | |
1349 } /* end GetThreadListStackTraces */ | |
1350 | |
1351 | |
1352 // Threads_lock NOT held, java_thread not protected by lock | |
1353 // java_thread - pre-checked | |
1354 // count_ptr - pre-checked for NULL | |
1355 jvmtiError | |
1356 JvmtiEnv::GetFrameCount(JavaThread* java_thread, jint* count_ptr) { | |
1357 jvmtiError err = JVMTI_ERROR_NONE; | |
1358 | |
1359 // retrieve or create JvmtiThreadState. | |
1360 JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread); | |
609
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1361 if (state == NULL) { |
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1362 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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1363 } |
0 | 1364 uint32_t debug_bits = 0; |
1365 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
1366 err = get_frame_count(state, count_ptr); | |
1367 } else { | |
1368 // get java stack frame count at safepoint. | |
1369 VM_GetFrameCount op(this, state, count_ptr); | |
1370 VMThread::execute(&op); | |
1371 err = op.result(); | |
1372 } | |
1373 return err; | |
1374 } /* end GetFrameCount */ | |
1375 | |
1376 | |
1377 // Threads_lock NOT held, java_thread not protected by lock | |
1378 // java_thread - pre-checked | |
1379 jvmtiError | |
1380 JvmtiEnv::PopFrame(JavaThread* java_thread) { | |
1381 JavaThread* current_thread = JavaThread::current(); | |
1382 HandleMark hm(current_thread); | |
1383 uint32_t debug_bits = 0; | |
1384 | |
609
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1385 // retrieve or create the state |
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1386 JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread); |
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1387 if (state == NULL) { |
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1388 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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1389 } |
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1390 |
0 | 1391 // Check if java_thread is fully suspended |
1392 if (!is_thread_fully_suspended(java_thread, true /* wait for suspend completion */, &debug_bits)) { | |
1393 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
1394 } | |
1395 // Check to see if a PopFrame was already in progress | |
1396 if (java_thread->popframe_condition() != JavaThread::popframe_inactive) { | |
1397 // Probably possible for JVMTI clients to trigger this, but the | |
1398 // JPDA backend shouldn't allow this to happen | |
1399 return JVMTI_ERROR_INTERNAL; | |
1400 } | |
1401 | |
1402 { | |
1403 // Was workaround bug | |
1404 // 4812902: popFrame hangs if the method is waiting at a synchronize | |
1405 // Catch this condition and return an error to avoid hanging. | |
1406 // Now JVMTI spec allows an implementation to bail out with an opaque frame error. | |
1407 OSThread* osThread = java_thread->osthread(); | |
1408 if (osThread->get_state() == MONITOR_WAIT) { | |
1409 return JVMTI_ERROR_OPAQUE_FRAME; | |
1410 } | |
1411 } | |
1412 | |
1413 { | |
1414 ResourceMark rm(current_thread); | |
1415 // Check if there are more than one Java frame in this thread, that the top two frames | |
1416 // are Java (not native) frames, and that there is no intervening VM frame | |
1417 int frame_count = 0; | |
1418 bool is_interpreted[2]; | |
1419 intptr_t *frame_sp[2]; | |
1420 // The 2-nd arg of constructor is needed to stop iterating at java entry frame. | |
1421 for (vframeStream vfs(java_thread, true); !vfs.at_end(); vfs.next()) { | |
1422 methodHandle mh(current_thread, vfs.method()); | |
1423 if (mh->is_native()) return(JVMTI_ERROR_OPAQUE_FRAME); | |
1424 is_interpreted[frame_count] = vfs.is_interpreted_frame(); | |
1425 frame_sp[frame_count] = vfs.frame_id(); | |
1426 if (++frame_count > 1) break; | |
1427 } | |
1428 if (frame_count < 2) { | |
1429 // We haven't found two adjacent non-native Java frames on the top. | |
1430 // There can be two situations here: | |
1431 // 1. There are no more java frames | |
1432 // 2. Two top java frames are separated by non-java native frames | |
1433 if(vframeFor(java_thread, 1) == NULL) { | |
1434 return JVMTI_ERROR_NO_MORE_FRAMES; | |
1435 } else { | |
1436 // Intervening non-java native or VM frames separate java frames. | |
1437 // Current implementation does not support this. See bug #5031735. | |
1438 // In theory it is possible to pop frames in such cases. | |
1439 return JVMTI_ERROR_OPAQUE_FRAME; | |
1440 } | |
1441 } | |
1442 | |
1443 // If any of the top 2 frames is a compiled one, need to deoptimize it | |
1444 for (int i = 0; i < 2; i++) { | |
1445 if (!is_interpreted[i]) { | |
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1446 Deoptimization::deoptimize_frame(java_thread, frame_sp[i]); |
0 | 1447 } |
1448 } | |
1449 | |
1450 // Update the thread state to reflect that the top frame is popped | |
1451 // so that cur_stack_depth is maintained properly and all frameIDs | |
1452 // are invalidated. | |
1453 // The current frame will be popped later when the suspended thread | |
1454 // is resumed and right before returning from VM to Java. | |
1455 // (see call_VM_base() in assembler_<cpu>.cpp). | |
1456 | |
1457 // It's fine to update the thread state here because no JVMTI events | |
1458 // shall be posted for this PopFrame. | |
1459 | |
1460 state->update_for_pop_top_frame(); | |
1461 java_thread->set_popframe_condition(JavaThread::popframe_pending_bit); | |
1462 // Set pending step flag for this popframe and it is cleared when next | |
1463 // step event is posted. | |
1464 state->set_pending_step_for_popframe(); | |
1465 } | |
1466 | |
1467 return JVMTI_ERROR_NONE; | |
1468 } /* end PopFrame */ | |
1469 | |
1470 | |
1471 // Threads_lock NOT held, java_thread not protected by lock | |
1472 // java_thread - pre-checked | |
1473 // java_thread - unchecked | |
1474 // depth - pre-checked as non-negative | |
1475 // method_ptr - pre-checked for NULL | |
1476 // location_ptr - pre-checked for NULL | |
1477 jvmtiError | |
1478 JvmtiEnv::GetFrameLocation(JavaThread* java_thread, jint depth, jmethodID* method_ptr, jlocation* location_ptr) { | |
1479 jvmtiError err = JVMTI_ERROR_NONE; | |
1480 uint32_t debug_bits = 0; | |
1481 | |
1482 if (is_thread_fully_suspended(java_thread, true, &debug_bits)) { | |
1483 err = get_frame_location(java_thread, depth, method_ptr, location_ptr); | |
1484 } else { | |
1485 // JVMTI get java stack frame location at safepoint. | |
1486 VM_GetFrameLocation op(this, java_thread, depth, method_ptr, location_ptr); | |
1487 VMThread::execute(&op); | |
1488 err = op.result(); | |
1489 } | |
1490 return err; | |
1491 } /* end GetFrameLocation */ | |
1492 | |
1493 | |
1494 // Threads_lock NOT held, java_thread not protected by lock | |
1495 // java_thread - pre-checked | |
1496 // java_thread - unchecked | |
1497 // depth - pre-checked as non-negative | |
1498 jvmtiError | |
1499 JvmtiEnv::NotifyFramePop(JavaThread* java_thread, jint depth) { | |
1500 ResourceMark rm; | |
1501 uint32_t debug_bits = 0; | |
1502 | |
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1503 JvmtiThreadState *state = JvmtiThreadState::state_for(java_thread); |
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1504 if (state == NULL) { |
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1505 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
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1506 } |
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1507 |
0 | 1508 if (!JvmtiEnv::is_thread_fully_suspended(java_thread, true, &debug_bits)) { |
1509 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; | |
1510 } | |
1511 | |
1512 if (TraceJVMTICalls) { | |
1513 JvmtiSuspendControl::print(); | |
1514 } | |
1515 | |
1516 vframe *vf = vframeFor(java_thread, depth); | |
1517 if (vf == NULL) { | |
1518 return JVMTI_ERROR_NO_MORE_FRAMES; | |
1519 } | |
1520 | |
1521 if (!vf->is_java_frame() || ((javaVFrame*) vf)->method()->is_native()) { | |
1522 return JVMTI_ERROR_OPAQUE_FRAME; | |
1523 } | |
1524 | |
1525 assert(vf->frame_pointer() != NULL, "frame pointer mustn't be NULL"); | |
1526 | |
1527 int frame_number = state->count_frames() - depth; | |
1528 state->env_thread_state(this)->set_frame_pop(frame_number); | |
1529 | |
1530 return JVMTI_ERROR_NONE; | |
1531 } /* end NotifyFramePop */ | |
1532 | |
1533 | |
1534 // | |
1535 // Force Early Return functions | |
1536 // | |
1537 | |
1538 // Threads_lock NOT held, java_thread not protected by lock | |
1539 // java_thread - pre-checked | |
1540 jvmtiError | |
1541 JvmtiEnv::ForceEarlyReturnObject(JavaThread* java_thread, jobject value) { | |
1542 jvalue val; | |
1543 val.l = value; | |
1544 return force_early_return(java_thread, val, atos); | |
1545 } /* end ForceEarlyReturnObject */ | |
1546 | |
1547 | |
1548 // Threads_lock NOT held, java_thread not protected by lock | |
1549 // java_thread - pre-checked | |
1550 jvmtiError | |
1551 JvmtiEnv::ForceEarlyReturnInt(JavaThread* java_thread, jint value) { | |
1552 jvalue val; | |
1553 val.i = value; | |
1554 return force_early_return(java_thread, val, itos); | |
1555 } /* end ForceEarlyReturnInt */ | |
1556 | |
1557 | |
1558 // Threads_lock NOT held, java_thread not protected by lock | |
1559 // java_thread - pre-checked | |
1560 jvmtiError | |
1561 JvmtiEnv::ForceEarlyReturnLong(JavaThread* java_thread, jlong value) { | |
1562 jvalue val; | |
1563 val.j = value; | |
1564 return force_early_return(java_thread, val, ltos); | |
1565 } /* end ForceEarlyReturnLong */ | |
1566 | |
1567 | |
1568 // Threads_lock NOT held, java_thread not protected by lock | |
1569 // java_thread - pre-checked | |
1570 jvmtiError | |
1571 JvmtiEnv::ForceEarlyReturnFloat(JavaThread* java_thread, jfloat value) { | |
1572 jvalue val; | |
1573 val.f = value; | |
1574 return force_early_return(java_thread, val, ftos); | |
1575 } /* end ForceEarlyReturnFloat */ | |
1576 | |
1577 | |
1578 // Threads_lock NOT held, java_thread not protected by lock | |
1579 // java_thread - pre-checked | |
1580 jvmtiError | |
1581 JvmtiEnv::ForceEarlyReturnDouble(JavaThread* java_thread, jdouble value) { | |
1582 jvalue val; | |
1583 val.d = value; | |
1584 return force_early_return(java_thread, val, dtos); | |
1585 } /* end ForceEarlyReturnDouble */ | |
1586 | |
1587 | |
1588 // Threads_lock NOT held, java_thread not protected by lock | |
1589 // java_thread - pre-checked | |
1590 jvmtiError | |
1591 JvmtiEnv::ForceEarlyReturnVoid(JavaThread* java_thread) { | |
1592 jvalue val; | |
1593 val.j = 0L; | |
1594 return force_early_return(java_thread, val, vtos); | |
1595 } /* end ForceEarlyReturnVoid */ | |
1596 | |
1597 | |
1598 // | |
1599 // Heap functions | |
1600 // | |
1601 | |
1602 // klass - NULL is a valid value, must be checked | |
1603 // initial_object - NULL is a valid value, must be checked | |
1604 // callbacks - pre-checked for NULL | |
1605 // user_data - NULL is a valid value, must be checked | |
1606 jvmtiError | |
1607 JvmtiEnv::FollowReferences(jint heap_filter, jclass klass, jobject initial_object, const jvmtiHeapCallbacks* callbacks, const void* user_data) { | |
1608 // check klass if provided | |
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1609 Klass* k_oop = NULL; |
0 | 1610 if (klass != NULL) { |
1611 oop k_mirror = JNIHandles::resolve_external_guard(klass); | |
1612 if (k_mirror == NULL) { | |
1613 return JVMTI_ERROR_INVALID_CLASS; | |
1614 } | |
1615 if (java_lang_Class::is_primitive(k_mirror)) { | |
1616 return JVMTI_ERROR_NONE; | |
1617 } | |
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1618 k_oop = java_lang_Class::as_Klass(k_mirror); |
0 | 1619 if (k_oop == NULL) { |
1620 return JVMTI_ERROR_INVALID_CLASS; | |
1621 } | |
1622 } | |
1623 | |
1624 Thread *thread = Thread::current(); | |
1625 HandleMark hm(thread); | |
1626 KlassHandle kh (thread, k_oop); | |
1627 | |
1628 TraceTime t("FollowReferences", TraceJVMTIObjectTagging); | |
1629 JvmtiTagMap::tag_map_for(this)->follow_references(heap_filter, kh, initial_object, callbacks, user_data); | |
1630 return JVMTI_ERROR_NONE; | |
1631 } /* end FollowReferences */ | |
1632 | |
1633 | |
1634 // klass - NULL is a valid value, must be checked | |
1635 // callbacks - pre-checked for NULL | |
1636 // user_data - NULL is a valid value, must be checked | |
1637 jvmtiError | |
1638 JvmtiEnv::IterateThroughHeap(jint heap_filter, jclass klass, const jvmtiHeapCallbacks* callbacks, const void* user_data) { | |
1639 // check klass if provided | |
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1640 Klass* k_oop = NULL; |
0 | 1641 if (klass != NULL) { |
1642 oop k_mirror = JNIHandles::resolve_external_guard(klass); | |
1643 if (k_mirror == NULL) { | |
1644 return JVMTI_ERROR_INVALID_CLASS; | |
1645 } | |
1646 if (java_lang_Class::is_primitive(k_mirror)) { | |
1647 return JVMTI_ERROR_NONE; | |
1648 } | |
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1649 k_oop = java_lang_Class::as_Klass(k_mirror); |
0 | 1650 if (k_oop == NULL) { |
1651 return JVMTI_ERROR_INVALID_CLASS; | |
1652 } | |
1653 } | |
1654 | |
1655 Thread *thread = Thread::current(); | |
1656 HandleMark hm(thread); | |
1657 KlassHandle kh (thread, k_oop); | |
1658 | |
1659 TraceTime t("IterateThroughHeap", TraceJVMTIObjectTagging); | |
1660 JvmtiTagMap::tag_map_for(this)->iterate_through_heap(heap_filter, kh, callbacks, user_data); | |
1661 return JVMTI_ERROR_NONE; | |
1662 } /* end IterateThroughHeap */ | |
1663 | |
1664 | |
1665 // tag_ptr - pre-checked for NULL | |
1666 jvmtiError | |
1667 JvmtiEnv::GetTag(jobject object, jlong* tag_ptr) { | |
1668 oop o = JNIHandles::resolve_external_guard(object); | |
1669 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
1670 *tag_ptr = JvmtiTagMap::tag_map_for(this)->get_tag(object); | |
1671 return JVMTI_ERROR_NONE; | |
1672 } /* end GetTag */ | |
1673 | |
1674 | |
1675 jvmtiError | |
1676 JvmtiEnv::SetTag(jobject object, jlong tag) { | |
1677 oop o = JNIHandles::resolve_external_guard(object); | |
1678 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
1679 JvmtiTagMap::tag_map_for(this)->set_tag(object, tag); | |
1680 return JVMTI_ERROR_NONE; | |
1681 } /* end SetTag */ | |
1682 | |
1683 | |
1684 // tag_count - pre-checked to be greater than or equal to 0 | |
1685 // tags - pre-checked for NULL | |
1686 // count_ptr - pre-checked for NULL | |
1687 // object_result_ptr - NULL is a valid value, must be checked | |
1688 // tag_result_ptr - NULL is a valid value, must be checked | |
1689 jvmtiError | |
1690 JvmtiEnv::GetObjectsWithTags(jint tag_count, const jlong* tags, jint* count_ptr, jobject** object_result_ptr, jlong** tag_result_ptr) { | |
1691 TraceTime t("GetObjectsWithTags", TraceJVMTIObjectTagging); | |
1692 return JvmtiTagMap::tag_map_for(this)->get_objects_with_tags((jlong*)tags, tag_count, count_ptr, object_result_ptr, tag_result_ptr); | |
1693 } /* end GetObjectsWithTags */ | |
1694 | |
1695 | |
1696 jvmtiError | |
1697 JvmtiEnv::ForceGarbageCollection() { | |
1698 Universe::heap()->collect(GCCause::_jvmti_force_gc); | |
1699 return JVMTI_ERROR_NONE; | |
1700 } /* end ForceGarbageCollection */ | |
1701 | |
1702 | |
1703 // | |
1704 // Heap (1.0) functions | |
1705 // | |
1706 | |
1707 // object_reference_callback - pre-checked for NULL | |
1708 // user_data - NULL is a valid value, must be checked | |
1709 jvmtiError | |
1710 JvmtiEnv::IterateOverObjectsReachableFromObject(jobject object, jvmtiObjectReferenceCallback object_reference_callback, const void* user_data) { | |
1711 oop o = JNIHandles::resolve_external_guard(object); | |
1712 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); | |
1713 JvmtiTagMap::tag_map_for(this)->iterate_over_objects_reachable_from_object(object, object_reference_callback, user_data); | |
1714 return JVMTI_ERROR_NONE; | |
1715 } /* end IterateOverObjectsReachableFromObject */ | |
1716 | |
1717 | |
1718 // heap_root_callback - NULL is a valid value, must be checked | |
1719 // stack_ref_callback - NULL is a valid value, must be checked | |
1720 // object_ref_callback - NULL is a valid value, must be checked | |
1721 // user_data - NULL is a valid value, must be checked | |
1722 jvmtiError | |
1723 JvmtiEnv::IterateOverReachableObjects(jvmtiHeapRootCallback heap_root_callback, jvmtiStackReferenceCallback stack_ref_callback, jvmtiObjectReferenceCallback object_ref_callback, const void* user_data) { | |
1724 TraceTime t("IterateOverReachableObjects", TraceJVMTIObjectTagging); | |
1725 JvmtiTagMap::tag_map_for(this)->iterate_over_reachable_objects(heap_root_callback, stack_ref_callback, object_ref_callback, user_data); | |
1726 return JVMTI_ERROR_NONE; | |
1727 } /* end IterateOverReachableObjects */ | |
1728 | |
1729 | |
1730 // heap_object_callback - pre-checked for NULL | |
1731 // user_data - NULL is a valid value, must be checked | |
1732 jvmtiError | |
1733 JvmtiEnv::IterateOverHeap(jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) { | |
1734 TraceTime t("IterateOverHeap", TraceJVMTIObjectTagging); | |
1735 Thread *thread = Thread::current(); | |
1736 HandleMark hm(thread); | |
1737 JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, KlassHandle(), heap_object_callback, user_data); | |
1738 return JVMTI_ERROR_NONE; | |
1739 } /* end IterateOverHeap */ | |
1740 | |
1741 | |
1742 // k_mirror - may be primitive, this must be checked | |
1743 // heap_object_callback - pre-checked for NULL | |
1744 // user_data - NULL is a valid value, must be checked | |
1745 jvmtiError | |
1746 JvmtiEnv::IterateOverInstancesOfClass(oop k_mirror, jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) { | |
1747 if (java_lang_Class::is_primitive(k_mirror)) { | |
1748 // DO PRIMITIVE CLASS PROCESSING | |
1749 return JVMTI_ERROR_NONE; | |
1750 } | |
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1751 Klass* k_oop = java_lang_Class::as_Klass(k_mirror); |
0 | 1752 if (k_oop == NULL) { |
1753 return JVMTI_ERROR_INVALID_CLASS; | |
1754 } | |
1755 Thread *thread = Thread::current(); | |
1756 HandleMark hm(thread); | |
1757 KlassHandle klass (thread, k_oop); | |
1758 TraceTime t("IterateOverInstancesOfClass", TraceJVMTIObjectTagging); | |
1759 JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, klass, heap_object_callback, user_data); | |
1760 return JVMTI_ERROR_NONE; | |
1761 } /* end IterateOverInstancesOfClass */ | |
1762 | |
1763 | |
1764 // | |
1765 // Local Variable functions | |
1766 // | |
1767 | |
1768 // Threads_lock NOT held, java_thread not protected by lock | |
1769 // java_thread - pre-checked | |
1770 // java_thread - unchecked | |
1771 // depth - pre-checked as non-negative | |
1772 // value_ptr - pre-checked for NULL | |
1773 jvmtiError | |
1774 JvmtiEnv::GetLocalObject(JavaThread* java_thread, jint depth, jint slot, jobject* value_ptr) { | |
1775 JavaThread* current_thread = JavaThread::current(); | |
1776 // rm object is created to clean up the javaVFrame created in | |
1777 // doit_prologue(), but after doit() is finished with it. | |
1778 ResourceMark rm(current_thread); | |
1779 | |
1780 VM_GetOrSetLocal op(java_thread, current_thread, depth, slot); | |
1781 VMThread::execute(&op); | |
1782 jvmtiError err = op.result(); | |
1783 if (err != JVMTI_ERROR_NONE) { | |
1784 return err; | |
1785 } else { | |
1786 *value_ptr = op.value().l; | |
1787 return JVMTI_ERROR_NONE; | |
1788 } | |
1789 } /* end GetLocalObject */ | |
1790 | |
2019 | 1791 // Threads_lock NOT held, java_thread not protected by lock |
1792 // java_thread - pre-checked | |
1793 // java_thread - unchecked | |
1794 // depth - pre-checked as non-negative | |
1795 // value - pre-checked for NULL | |
1796 jvmtiError | |
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1797 JvmtiEnv::GetLocalInstance(JavaThread* java_thread, jint depth, jobject* value_ptr){ |
2019 | 1798 JavaThread* current_thread = JavaThread::current(); |
1799 // rm object is created to clean up the javaVFrame created in | |
1800 // doit_prologue(), but after doit() is finished with it. | |
1801 ResourceMark rm(current_thread); | |
1802 | |
1803 VM_GetReceiver op(java_thread, current_thread, depth); | |
1804 VMThread::execute(&op); | |
1805 jvmtiError err = op.result(); | |
1806 if (err != JVMTI_ERROR_NONE) { | |
1807 return err; | |
1808 } else { | |
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1809 *value_ptr = op.value().l; |
2019 | 1810 return JVMTI_ERROR_NONE; |
1811 } | |
1812 } /* end GetLocalInstance */ | |
1813 | |
0 | 1814 |
1815 // Threads_lock NOT held, java_thread not protected by lock | |
1816 // java_thread - pre-checked | |
1817 // java_thread - unchecked | |
1818 // depth - pre-checked as non-negative | |
1819 // value_ptr - pre-checked for NULL | |
1820 jvmtiError | |
1821 JvmtiEnv::GetLocalInt(JavaThread* java_thread, jint depth, jint slot, jint* value_ptr) { | |
1822 // rm object is created to clean up the javaVFrame created in | |
1823 // doit_prologue(), but after doit() is finished with it. | |
1824 ResourceMark rm; | |
1825 | |
1826 VM_GetOrSetLocal op(java_thread, depth, slot, T_INT); | |
1827 VMThread::execute(&op); | |
1828 *value_ptr = op.value().i; | |
1829 return op.result(); | |
1830 } /* end GetLocalInt */ | |
1831 | |
1832 | |
1833 // Threads_lock NOT held, java_thread not protected by lock | |
1834 // java_thread - pre-checked | |
1835 // java_thread - unchecked | |
1836 // depth - pre-checked as non-negative | |
1837 // value_ptr - pre-checked for NULL | |
1838 jvmtiError | |
1839 JvmtiEnv::GetLocalLong(JavaThread* java_thread, jint depth, jint slot, jlong* value_ptr) { | |
1840 // rm object is created to clean up the javaVFrame created in | |
1841 // doit_prologue(), but after doit() is finished with it. | |
1842 ResourceMark rm; | |
1843 | |
1844 VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG); | |
1845 VMThread::execute(&op); | |
1846 *value_ptr = op.value().j; | |
1847 return op.result(); | |
1848 } /* end GetLocalLong */ | |
1849 | |
1850 | |
1851 // Threads_lock NOT held, java_thread not protected by lock | |
1852 // java_thread - pre-checked | |
1853 // java_thread - unchecked | |
1854 // depth - pre-checked as non-negative | |
1855 // value_ptr - pre-checked for NULL | |
1856 jvmtiError | |
1857 JvmtiEnv::GetLocalFloat(JavaThread* java_thread, jint depth, jint slot, jfloat* value_ptr) { | |
1858 // rm object is created to clean up the javaVFrame created in | |
1859 // doit_prologue(), but after doit() is finished with it. | |
1860 ResourceMark rm; | |
1861 | |
1862 VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT); | |
1863 VMThread::execute(&op); | |
1864 *value_ptr = op.value().f; | |
1865 return op.result(); | |
1866 } /* end GetLocalFloat */ | |
1867 | |
1868 | |
1869 // Threads_lock NOT held, java_thread not protected by lock | |
1870 // java_thread - pre-checked | |
1871 // java_thread - unchecked | |
1872 // depth - pre-checked as non-negative | |
1873 // value_ptr - pre-checked for NULL | |
1874 jvmtiError | |
1875 JvmtiEnv::GetLocalDouble(JavaThread* java_thread, jint depth, jint slot, jdouble* value_ptr) { | |
1876 // rm object is created to clean up the javaVFrame created in | |
1877 // doit_prologue(), but after doit() is finished with it. | |
1878 ResourceMark rm; | |
1879 | |
1880 VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE); | |
1881 VMThread::execute(&op); | |
1882 *value_ptr = op.value().d; | |
1883 return op.result(); | |
1884 } /* end GetLocalDouble */ | |
1885 | |
1886 | |
1887 // Threads_lock NOT held, java_thread not protected by lock | |
1888 // java_thread - pre-checked | |
1889 // java_thread - unchecked | |
1890 // depth - pre-checked as non-negative | |
1891 jvmtiError | |
1892 JvmtiEnv::SetLocalObject(JavaThread* java_thread, jint depth, jint slot, jobject value) { | |
1893 // rm object is created to clean up the javaVFrame created in | |
1894 // doit_prologue(), but after doit() is finished with it. | |
1895 ResourceMark rm; | |
1896 jvalue val; | |
1897 val.l = value; | |
1898 VM_GetOrSetLocal op(java_thread, depth, slot, T_OBJECT, val); | |
1899 VMThread::execute(&op); | |
1900 return op.result(); | |
1901 } /* end SetLocalObject */ | |
1902 | |
1903 | |
1904 // Threads_lock NOT held, java_thread not protected by lock | |
1905 // java_thread - pre-checked | |
1906 // java_thread - unchecked | |
1907 // depth - pre-checked as non-negative | |
1908 jvmtiError | |
1909 JvmtiEnv::SetLocalInt(JavaThread* java_thread, jint depth, jint slot, jint value) { | |
1910 // rm object is created to clean up the javaVFrame created in | |
1911 // doit_prologue(), but after doit() is finished with it. | |
1912 ResourceMark rm; | |
1913 jvalue val; | |
1914 val.i = value; | |
1915 VM_GetOrSetLocal op(java_thread, depth, slot, T_INT, val); | |
1916 VMThread::execute(&op); | |
1917 return op.result(); | |
1918 } /* end SetLocalInt */ | |
1919 | |
1920 | |
1921 // Threads_lock NOT held, java_thread not protected by lock | |
1922 // java_thread - pre-checked | |
1923 // java_thread - unchecked | |
1924 // depth - pre-checked as non-negative | |
1925 jvmtiError | |
1926 JvmtiEnv::SetLocalLong(JavaThread* java_thread, jint depth, jint slot, jlong value) { | |
1927 // rm object is created to clean up the javaVFrame created in | |
1928 // doit_prologue(), but after doit() is finished with it. | |
1929 ResourceMark rm; | |
1930 jvalue val; | |
1931 val.j = value; | |
1932 VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG, val); | |
1933 VMThread::execute(&op); | |
1934 return op.result(); | |
1935 } /* end SetLocalLong */ | |
1936 | |
1937 | |
1938 // Threads_lock NOT held, java_thread not protected by lock | |
1939 // java_thread - pre-checked | |
1940 // java_thread - unchecked | |
1941 // depth - pre-checked as non-negative | |
1942 jvmtiError | |
1943 JvmtiEnv::SetLocalFloat(JavaThread* java_thread, jint depth, jint slot, jfloat value) { | |
1944 // rm object is created to clean up the javaVFrame created in | |
1945 // doit_prologue(), but after doit() is finished with it. | |
1946 ResourceMark rm; | |
1947 jvalue val; | |
1948 val.f = value; | |
1949 VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT, val); | |
1950 VMThread::execute(&op); | |
1951 return op.result(); | |
1952 } /* end SetLocalFloat */ | |
1953 | |
1954 | |
1955 // Threads_lock NOT held, java_thread not protected by lock | |
1956 // java_thread - pre-checked | |
1957 // java_thread - unchecked | |
1958 // depth - pre-checked as non-negative | |
1959 jvmtiError | |
1960 JvmtiEnv::SetLocalDouble(JavaThread* java_thread, jint depth, jint slot, jdouble value) { | |
1961 // rm object is created to clean up the javaVFrame created in | |
1962 // doit_prologue(), but after doit() is finished with it. | |
1963 ResourceMark rm; | |
1964 jvalue val; | |
1965 val.d = value; | |
1966 VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE, val); | |
1967 VMThread::execute(&op); | |
1968 return op.result(); | |
1969 } /* end SetLocalDouble */ | |
1970 | |
1971 | |
1972 // | |
1973 // Breakpoint functions | |
1974 // | |
1975 | |
1976 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
1977 jvmtiError | |
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1978 JvmtiEnv::SetBreakpoint(Method* method_oop, jlocation location) { |
0 | 1979 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
1980 if (location < 0) { // simple invalid location check first | |
1981 return JVMTI_ERROR_INVALID_LOCATION; | |
1982 } | |
1983 // verify that the breakpoint is not past the end of the method | |
1984 if (location >= (jlocation) method_oop->code_size()) { | |
1985 return JVMTI_ERROR_INVALID_LOCATION; | |
1986 } | |
1987 | |
1988 ResourceMark rm; | |
1989 JvmtiBreakpoint bp(method_oop, location); | |
1990 JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints(); | |
1991 if (jvmti_breakpoints.set(bp) == JVMTI_ERROR_DUPLICATE) | |
1992 return JVMTI_ERROR_DUPLICATE; | |
1993 | |
1994 if (TraceJVMTICalls) { | |
1995 jvmti_breakpoints.print(); | |
1996 } | |
1997 | |
1998 return JVMTI_ERROR_NONE; | |
1999 } /* end SetBreakpoint */ | |
2000 | |
2001 | |
2002 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2003 jvmtiError | |
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2004 JvmtiEnv::ClearBreakpoint(Method* method_oop, jlocation location) { |
0 | 2005 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
2006 | |
2007 if (location < 0) { // simple invalid location check first | |
2008 return JVMTI_ERROR_INVALID_LOCATION; | |
2009 } | |
2010 | |
2011 // verify that the breakpoint is not past the end of the method | |
2012 if (location >= (jlocation) method_oop->code_size()) { | |
2013 return JVMTI_ERROR_INVALID_LOCATION; | |
2014 } | |
2015 | |
2016 JvmtiBreakpoint bp(method_oop, location); | |
2017 | |
2018 JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints(); | |
2019 if (jvmti_breakpoints.clear(bp) == JVMTI_ERROR_NOT_FOUND) | |
2020 return JVMTI_ERROR_NOT_FOUND; | |
2021 | |
2022 if (TraceJVMTICalls) { | |
2023 jvmti_breakpoints.print(); | |
2024 } | |
2025 | |
2026 return JVMTI_ERROR_NONE; | |
2027 } /* end ClearBreakpoint */ | |
2028 | |
2029 | |
2030 // | |
2031 // Watched Field functions | |
2032 // | |
2033 | |
2034 jvmtiError | |
2035 JvmtiEnv::SetFieldAccessWatch(fieldDescriptor* fdesc_ptr) { | |
2036 // make sure we haven't set this watch before | |
2037 if (fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_DUPLICATE; | |
2038 fdesc_ptr->set_is_field_access_watched(true); | |
2039 | |
2040 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, true); | |
2041 | |
2042 return JVMTI_ERROR_NONE; | |
2043 } /* end SetFieldAccessWatch */ | |
2044 | |
2045 | |
2046 jvmtiError | |
2047 JvmtiEnv::ClearFieldAccessWatch(fieldDescriptor* fdesc_ptr) { | |
2048 // make sure we have a watch to clear | |
2049 if (!fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_NOT_FOUND; | |
2050 fdesc_ptr->set_is_field_access_watched(false); | |
2051 | |
2052 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, false); | |
2053 | |
2054 return JVMTI_ERROR_NONE; | |
2055 } /* end ClearFieldAccessWatch */ | |
2056 | |
2057 | |
2058 jvmtiError | |
2059 JvmtiEnv::SetFieldModificationWatch(fieldDescriptor* fdesc_ptr) { | |
2060 // make sure we haven't set this watch before | |
2061 if (fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_DUPLICATE; | |
2062 fdesc_ptr->set_is_field_modification_watched(true); | |
2063 | |
2064 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, true); | |
2065 | |
2066 return JVMTI_ERROR_NONE; | |
2067 } /* end SetFieldModificationWatch */ | |
2068 | |
2069 | |
2070 jvmtiError | |
2071 JvmtiEnv::ClearFieldModificationWatch(fieldDescriptor* fdesc_ptr) { | |
2072 // make sure we have a watch to clear | |
2073 if (!fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_NOT_FOUND; | |
2074 fdesc_ptr->set_is_field_modification_watched(false); | |
2075 | |
2076 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, false); | |
2077 | |
2078 return JVMTI_ERROR_NONE; | |
2079 } /* end ClearFieldModificationWatch */ | |
2080 | |
2081 // | |
2082 // Class functions | |
2083 // | |
2084 | |
2085 | |
2086 // k_mirror - may be primitive, this must be checked | |
2087 // signature_ptr - NULL is a valid value, must be checked | |
2088 // generic_ptr - NULL is a valid value, must be checked | |
2089 jvmtiError | |
2090 JvmtiEnv::GetClassSignature(oop k_mirror, char** signature_ptr, char** generic_ptr) { | |
2091 ResourceMark rm; | |
2092 bool isPrimitive = java_lang_Class::is_primitive(k_mirror); | |
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2093 Klass* k = NULL; |
0 | 2094 if (!isPrimitive) { |
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2095 k = java_lang_Class::as_Klass(k_mirror); |
0 | 2096 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
2097 } | |
2098 if (signature_ptr != NULL) { | |
2099 char* result = NULL; | |
2100 if (isPrimitive) { | |
2101 char tchar = type2char(java_lang_Class::primitive_type(k_mirror)); | |
2102 result = (char*) jvmtiMalloc(2); | |
2103 result[0] = tchar; | |
2104 result[1] = '\0'; | |
2105 } else { | |
6983 | 2106 const char* class_sig = k->signature_name(); |
0 | 2107 result = (char *) jvmtiMalloc(strlen(class_sig)+1); |
2108 strcpy(result, class_sig); | |
2109 } | |
2110 *signature_ptr = result; | |
2111 } | |
2112 if (generic_ptr != NULL) { | |
2113 *generic_ptr = NULL; | |
6983 | 2114 if (!isPrimitive && k->oop_is_instance()) { |
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2115 Symbol* soo = InstanceKlass::cast(k)->generic_signature(); |
0 | 2116 if (soo != NULL) { |
2117 const char *gen_sig = soo->as_C_string(); | |
2118 if (gen_sig != NULL) { | |
2119 char* gen_result; | |
2120 jvmtiError err = allocate(strlen(gen_sig) + 1, | |
2121 (unsigned char **)&gen_result); | |
2122 if (err != JVMTI_ERROR_NONE) { | |
2123 return err; | |
2124 } | |
2125 strcpy(gen_result, gen_sig); | |
2126 *generic_ptr = gen_result; | |
2127 } | |
2128 } | |
2129 } | |
2130 } | |
2131 return JVMTI_ERROR_NONE; | |
2132 } /* end GetClassSignature */ | |
2133 | |
2134 | |
2135 // k_mirror - may be primitive, this must be checked | |
2136 // status_ptr - pre-checked for NULL | |
2137 jvmtiError | |
2138 JvmtiEnv::GetClassStatus(oop k_mirror, jint* status_ptr) { | |
2139 jint result = 0; | |
2140 if (java_lang_Class::is_primitive(k_mirror)) { | |
2141 result |= JVMTI_CLASS_STATUS_PRIMITIVE; | |
2142 } else { | |
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2143 Klass* k = java_lang_Class::as_Klass(k_mirror); |
0 | 2144 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
6983 | 2145 result = k->jvmti_class_status(); |
0 | 2146 } |
2147 *status_ptr = result; | |
2148 | |
2149 return JVMTI_ERROR_NONE; | |
2150 } /* end GetClassStatus */ | |
2151 | |
2152 | |
2153 // k_mirror - may be primitive, this must be checked | |
2154 // source_name_ptr - pre-checked for NULL | |
2155 jvmtiError | |
2156 JvmtiEnv::GetSourceFileName(oop k_mirror, char** source_name_ptr) { | |
2157 if (java_lang_Class::is_primitive(k_mirror)) { | |
2158 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2159 } | |
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2160 Klass* k_klass = java_lang_Class::as_Klass(k_mirror); |
0 | 2161 NULL_CHECK(k_klass, JVMTI_ERROR_INVALID_CLASS); |
2162 | |
6983 | 2163 if (!k_klass->oop_is_instance()) { |
0 | 2164 return JVMTI_ERROR_ABSENT_INFORMATION; |
2165 } | |
2166 | |
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2167 Symbol* sfnOop = InstanceKlass::cast(k_klass)->source_file_name(); |
0 | 2168 NULL_CHECK(sfnOop, JVMTI_ERROR_ABSENT_INFORMATION); |
2169 { | |
2170 JavaThread* current_thread = JavaThread::current(); | |
2171 ResourceMark rm(current_thread); | |
2172 const char* sfncp = (const char*) sfnOop->as_C_string(); | |
2173 *source_name_ptr = (char *) jvmtiMalloc(strlen(sfncp)+1); | |
2174 strcpy(*source_name_ptr, sfncp); | |
2175 } | |
2176 | |
2177 return JVMTI_ERROR_NONE; | |
2178 } /* end GetSourceFileName */ | |
2179 | |
2180 | |
2181 // k_mirror - may be primitive, this must be checked | |
2182 // modifiers_ptr - pre-checked for NULL | |
2183 jvmtiError | |
2184 JvmtiEnv::GetClassModifiers(oop k_mirror, jint* modifiers_ptr) { | |
2185 JavaThread* current_thread = JavaThread::current(); | |
2186 jint result = 0; | |
2187 if (!java_lang_Class::is_primitive(k_mirror)) { | |
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2188 Klass* k = java_lang_Class::as_Klass(k_mirror); |
0 | 2189 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
6983 | 2190 result = k->compute_modifier_flags(current_thread); |
0 | 2191 JavaThread* THREAD = current_thread; // pass to macros |
2192 if (HAS_PENDING_EXCEPTION) { | |
2193 CLEAR_PENDING_EXCEPTION; | |
2194 return JVMTI_ERROR_INTERNAL; | |
2195 }; | |
2196 | |
2197 // Reset the deleted ACC_SUPER bit ( deleted in compute_modifier_flags()). | |
6983 | 2198 if(k->is_super()) { |
0 | 2199 result |= JVM_ACC_SUPER; |
2200 } | |
2201 } else { | |
2202 result = (JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC); | |
2203 } | |
2204 *modifiers_ptr = result; | |
2205 | |
2206 return JVMTI_ERROR_NONE; | |
2207 } /* end GetClassModifiers */ | |
2208 | |
2209 | |
2210 // k_mirror - may be primitive, this must be checked | |
2211 // method_count_ptr - pre-checked for NULL | |
2212 // methods_ptr - pre-checked for NULL | |
2213 jvmtiError | |
2214 JvmtiEnv::GetClassMethods(oop k_mirror, jint* method_count_ptr, jmethodID** methods_ptr) { | |
2215 JavaThread* current_thread = JavaThread::current(); | |
2216 HandleMark hm(current_thread); | |
2217 | |
2218 if (java_lang_Class::is_primitive(k_mirror)) { | |
2219 *method_count_ptr = 0; | |
2220 *methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID)); | |
2221 return JVMTI_ERROR_NONE; | |
2222 } | |
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2223 Klass* k = java_lang_Class::as_Klass(k_mirror); |
0 | 2224 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
2225 | |
2226 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
6983 | 2227 if (!(k->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) { |
0 | 2228 return JVMTI_ERROR_CLASS_NOT_PREPARED; |
2229 } | |
2230 | |
6983 | 2231 if (!k->oop_is_instance()) { |
0 | 2232 *method_count_ptr = 0; |
2233 *methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID)); | |
2234 return JVMTI_ERROR_NONE; | |
2235 } | |
2236 instanceKlassHandle instanceK_h(current_thread, k); | |
2237 // Allocate the result and fill it in | |
2238 int result_length = instanceK_h->methods()->length(); | |
2239 jmethodID* result_list = (jmethodID*)jvmtiMalloc(result_length * sizeof(jmethodID)); | |
2240 int index; | |
2241 if (JvmtiExport::can_maintain_original_method_order()) { | |
2242 // Use the original method ordering indices stored in the class, so we can emit | |
2243 // jmethodIDs in the order they appeared in the class file | |
2244 for (index = 0; index < result_length; index++) { | |
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2245 Method* m = instanceK_h->methods()->at(index); |
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2246 int original_index = instanceK_h->method_ordering()->at(index); |
0 | 2247 assert(original_index >= 0 && original_index < result_length, "invalid original method index"); |
2248 jmethodID id = m->jmethod_id(); | |
2249 result_list[original_index] = id; | |
2250 } | |
2251 } else { | |
2252 // otherwise just copy in any order | |
2253 for (index = 0; index < result_length; index++) { | |
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2254 Method* m = instanceK_h->methods()->at(index); |
0 | 2255 jmethodID id = m->jmethod_id(); |
2256 result_list[index] = id; | |
2257 } | |
2258 } | |
2259 // Fill in return value. | |
2260 *method_count_ptr = result_length; | |
2261 *methods_ptr = result_list; | |
2262 | |
2263 return JVMTI_ERROR_NONE; | |
2264 } /* end GetClassMethods */ | |
2265 | |
2266 | |
2267 // k_mirror - may be primitive, this must be checked | |
2268 // field_count_ptr - pre-checked for NULL | |
2269 // fields_ptr - pre-checked for NULL | |
2270 jvmtiError | |
2271 JvmtiEnv::GetClassFields(oop k_mirror, jint* field_count_ptr, jfieldID** fields_ptr) { | |
2272 if (java_lang_Class::is_primitive(k_mirror)) { | |
2273 *field_count_ptr = 0; | |
2274 *fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID)); | |
2275 return JVMTI_ERROR_NONE; | |
2276 } | |
2277 JavaThread* current_thread = JavaThread::current(); | |
2278 HandleMark hm(current_thread); | |
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2279 Klass* k = java_lang_Class::as_Klass(k_mirror); |
0 | 2280 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
2281 | |
2282 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
6983 | 2283 if (!(k->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) { |
0 | 2284 return JVMTI_ERROR_CLASS_NOT_PREPARED; |
2285 } | |
2286 | |
6983 | 2287 if (!k->oop_is_instance()) { |
0 | 2288 *field_count_ptr = 0; |
2289 *fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID)); | |
2290 return JVMTI_ERROR_NONE; | |
2291 } | |
2292 | |
2293 | |
2294 instanceKlassHandle instanceK_h(current_thread, k); | |
2295 | |
2296 int result_count = 0; | |
2297 // First, count the fields. | |
2298 FilteredFieldStream flds(instanceK_h, true, true); | |
2299 result_count = flds.field_count(); | |
2300 | |
2301 // Allocate the result and fill it in | |
2302 jfieldID* result_list = (jfieldID*) jvmtiMalloc(result_count * sizeof(jfieldID)); | |
2303 // The JVMTI spec requires fields in the order they occur in the class file, | |
2304 // this is the reverse order of what FieldStream hands out. | |
2305 int id_index = (result_count - 1); | |
2306 | |
2307 for (FilteredFieldStream src_st(instanceK_h, true, true); !src_st.eos(); src_st.next()) { | |
2308 result_list[id_index--] = jfieldIDWorkaround::to_jfieldID( | |
2309 instanceK_h, src_st.offset(), | |
2310 src_st.access_flags().is_static()); | |
2311 } | |
2312 assert(id_index == -1, "just checking"); | |
2313 // Fill in the results | |
2314 *field_count_ptr = result_count; | |
2315 *fields_ptr = result_list; | |
2316 | |
2317 return JVMTI_ERROR_NONE; | |
2318 } /* end GetClassFields */ | |
2319 | |
2320 | |
2321 // k_mirror - may be primitive, this must be checked | |
2322 // interface_count_ptr - pre-checked for NULL | |
2323 // interfaces_ptr - pre-checked for NULL | |
2324 jvmtiError | |
2325 JvmtiEnv::GetImplementedInterfaces(oop k_mirror, jint* interface_count_ptr, jclass** interfaces_ptr) { | |
2326 { | |
2327 if (java_lang_Class::is_primitive(k_mirror)) { | |
2328 *interface_count_ptr = 0; | |
2329 *interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass)); | |
2330 return JVMTI_ERROR_NONE; | |
2331 } | |
2332 JavaThread* current_thread = JavaThread::current(); | |
2333 HandleMark hm(current_thread); | |
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2334 Klass* k = java_lang_Class::as_Klass(k_mirror); |
0 | 2335 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
2336 | |
2337 // Return CLASS_NOT_PREPARED error as per JVMTI spec. | |
6983 | 2338 if (!(k->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) |
0 | 2339 return JVMTI_ERROR_CLASS_NOT_PREPARED; |
2340 | |
6983 | 2341 if (!k->oop_is_instance()) { |
0 | 2342 *interface_count_ptr = 0; |
2343 *interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass)); | |
2344 return JVMTI_ERROR_NONE; | |
2345 } | |
2346 | |
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2347 Array<Klass*>* interface_list = InstanceKlass::cast(k)->local_interfaces(); |
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2348 const int result_length = (interface_list == NULL ? 0 : interface_list->length()); |
0 | 2349 jclass* result_list = (jclass*) jvmtiMalloc(result_length * sizeof(jclass)); |
2350 for (int i_index = 0; i_index < result_length; i_index += 1) { | |
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2351 Klass* klass_at = interface_list->at(i_index); |
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2352 assert(klass_at->is_klass(), "interfaces must be Klass*s"); |
6983 | 2353 assert(klass_at->is_interface(), "interfaces must be interfaces"); |
2354 oop mirror_at = klass_at->java_mirror(); | |
0 | 2355 Handle handle_at = Handle(current_thread, mirror_at); |
2356 result_list[i_index] = (jclass) jni_reference(handle_at); | |
2357 } | |
2358 *interface_count_ptr = result_length; | |
2359 *interfaces_ptr = result_list; | |
2360 } | |
2361 | |
2362 return JVMTI_ERROR_NONE; | |
2363 } /* end GetImplementedInterfaces */ | |
2364 | |
2365 | |
2366 // k_mirror - may be primitive, this must be checked | |
2367 // minor_version_ptr - pre-checked for NULL | |
2368 // major_version_ptr - pre-checked for NULL | |
2369 jvmtiError | |
2370 JvmtiEnv::GetClassVersionNumbers(oop k_mirror, jint* minor_version_ptr, jint* major_version_ptr) { | |
2371 if (java_lang_Class::is_primitive(k_mirror)) { | |
2372 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2373 } | |
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2374 Klass* k_oop = java_lang_Class::as_Klass(k_mirror); |
0 | 2375 Thread *thread = Thread::current(); |
2376 HandleMark hm(thread); | |
2377 KlassHandle klass(thread, k_oop); | |
2378 | |
2379 jint status = klass->jvmti_class_status(); | |
2380 if (status & (JVMTI_CLASS_STATUS_ERROR)) { | |
2381 return JVMTI_ERROR_INVALID_CLASS; | |
2382 } | |
2383 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { | |
2384 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2385 } | |
2386 | |
2387 instanceKlassHandle ik(thread, k_oop); | |
2388 *minor_version_ptr = ik->minor_version(); | |
2389 *major_version_ptr = ik->major_version(); | |
2390 | |
2391 return JVMTI_ERROR_NONE; | |
2392 } /* end GetClassVersionNumbers */ | |
2393 | |
2394 | |
2395 // k_mirror - may be primitive, this must be checked | |
2396 // constant_pool_count_ptr - pre-checked for NULL | |
2397 // constant_pool_byte_count_ptr - pre-checked for NULL | |
2398 // constant_pool_bytes_ptr - pre-checked for NULL | |
2399 jvmtiError | |
2400 JvmtiEnv::GetConstantPool(oop k_mirror, jint* constant_pool_count_ptr, jint* constant_pool_byte_count_ptr, unsigned char** constant_pool_bytes_ptr) { | |
2401 if (java_lang_Class::is_primitive(k_mirror)) { | |
2402 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2403 } | |
2404 | |
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2405 Klass* k_oop = java_lang_Class::as_Klass(k_mirror); |
0 | 2406 Thread *thread = Thread::current(); |
2407 HandleMark hm(thread); | |
2408 ResourceMark rm(thread); | |
2409 KlassHandle klass(thread, k_oop); | |
2410 | |
2411 jint status = klass->jvmti_class_status(); | |
2412 if (status & (JVMTI_CLASS_STATUS_ERROR)) { | |
2413 return JVMTI_ERROR_INVALID_CLASS; | |
2414 } | |
2415 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { | |
2416 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2417 } | |
2418 | |
2419 instanceKlassHandle ikh(thread, k_oop); | |
2420 constantPoolHandle constants(thread, ikh->constants()); | |
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2421 oop cplock = constants->lock(); |
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2422 ObjectLocker ol(cplock, thread, cplock != NULL); // lock constant pool while we query it |
0 | 2423 |
2424 JvmtiConstantPoolReconstituter reconstituter(ikh); | |
2425 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
2426 return reconstituter.get_error(); | |
2427 } | |
2428 | |
2429 unsigned char *cpool_bytes; | |
2430 int cpool_size = reconstituter.cpool_size(); | |
2431 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
2432 return reconstituter.get_error(); | |
2433 } | |
2434 jvmtiError res = allocate(cpool_size, &cpool_bytes); | |
2435 if (res != JVMTI_ERROR_NONE) { | |
2436 return res; | |
2437 } | |
2438 reconstituter.copy_cpool_bytes(cpool_bytes); | |
2439 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { | |
2440 return reconstituter.get_error(); | |
2441 } | |
2442 | |
2443 *constant_pool_count_ptr = constants->length(); | |
2444 *constant_pool_byte_count_ptr = cpool_size; | |
2445 *constant_pool_bytes_ptr = cpool_bytes; | |
2446 | |
2447 return JVMTI_ERROR_NONE; | |
2448 } /* end GetConstantPool */ | |
2449 | |
2450 | |
2451 // k_mirror - may be primitive, this must be checked | |
2452 // is_interface_ptr - pre-checked for NULL | |
2453 jvmtiError | |
2454 JvmtiEnv::IsInterface(oop k_mirror, jboolean* is_interface_ptr) { | |
2455 { | |
2456 bool result = false; | |
2457 if (!java_lang_Class::is_primitive(k_mirror)) { | |
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2458 Klass* k = java_lang_Class::as_Klass(k_mirror); |
6983 | 2459 if (k != NULL && k->is_interface()) { |
0 | 2460 result = true; |
2461 } | |
2462 } | |
2463 *is_interface_ptr = result; | |
2464 } | |
2465 | |
2466 return JVMTI_ERROR_NONE; | |
2467 } /* end IsInterface */ | |
2468 | |
2469 | |
2470 // k_mirror - may be primitive, this must be checked | |
2471 // is_array_class_ptr - pre-checked for NULL | |
2472 jvmtiError | |
2473 JvmtiEnv::IsArrayClass(oop k_mirror, jboolean* is_array_class_ptr) { | |
2474 { | |
2475 bool result = false; | |
2476 if (!java_lang_Class::is_primitive(k_mirror)) { | |
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2477 Klass* k = java_lang_Class::as_Klass(k_mirror); |
6983 | 2478 if (k != NULL && k->oop_is_array()) { |
0 | 2479 result = true; |
2480 } | |
2481 } | |
2482 *is_array_class_ptr = result; | |
2483 } | |
2484 | |
2485 return JVMTI_ERROR_NONE; | |
2486 } /* end IsArrayClass */ | |
2487 | |
2488 | |
2489 // k_mirror - may be primitive, this must be checked | |
2490 // classloader_ptr - pre-checked for NULL | |
2491 jvmtiError | |
2492 JvmtiEnv::GetClassLoader(oop k_mirror, jobject* classloader_ptr) { | |
2493 { | |
2494 if (java_lang_Class::is_primitive(k_mirror)) { | |
2495 *classloader_ptr = (jclass) jni_reference(Handle()); | |
2496 return JVMTI_ERROR_NONE; | |
2497 } | |
2498 JavaThread* current_thread = JavaThread::current(); | |
2499 HandleMark hm(current_thread); | |
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2500 Klass* k = java_lang_Class::as_Klass(k_mirror); |
0 | 2501 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
2502 | |
6983 | 2503 oop result_oop = k->class_loader(); |
0 | 2504 if (result_oop == NULL) { |
2505 *classloader_ptr = (jclass) jni_reference(Handle()); | |
2506 return JVMTI_ERROR_NONE; | |
2507 } | |
2508 Handle result_handle = Handle(current_thread, result_oop); | |
2509 jclass result_jnihandle = (jclass) jni_reference(result_handle); | |
2510 *classloader_ptr = result_jnihandle; | |
2511 } | |
2512 return JVMTI_ERROR_NONE; | |
2513 } /* end GetClassLoader */ | |
2514 | |
2515 | |
2516 // k_mirror - may be primitive, this must be checked | |
2517 // source_debug_extension_ptr - pre-checked for NULL | |
2518 jvmtiError | |
2519 JvmtiEnv::GetSourceDebugExtension(oop k_mirror, char** source_debug_extension_ptr) { | |
2520 { | |
2521 if (java_lang_Class::is_primitive(k_mirror)) { | |
2522 return JVMTI_ERROR_ABSENT_INFORMATION; | |
2523 } | |
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2524 Klass* k = java_lang_Class::as_Klass(k_mirror); |
0 | 2525 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
6983 | 2526 if (!k->oop_is_instance()) { |
0 | 2527 return JVMTI_ERROR_ABSENT_INFORMATION; |
2528 } | |
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2529 char* sde = InstanceKlass::cast(k)->source_debug_extension(); |
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2530 NULL_CHECK(sde, JVMTI_ERROR_ABSENT_INFORMATION); |
0 | 2531 |
2532 { | |
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2533 *source_debug_extension_ptr = (char *) jvmtiMalloc(strlen(sde)+1); |
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2534 strcpy(*source_debug_extension_ptr, sde); |
0 | 2535 } |
2536 } | |
2537 | |
2538 return JVMTI_ERROR_NONE; | |
2539 } /* end GetSourceDebugExtension */ | |
2540 | |
2541 // | |
2542 // Object functions | |
2543 // | |
2544 | |
2545 // hash_code_ptr - pre-checked for NULL | |
2546 jvmtiError | |
2547 JvmtiEnv::GetObjectHashCode(jobject object, jint* hash_code_ptr) { | |
2548 oop mirror = JNIHandles::resolve_external_guard(object); | |
2549 NULL_CHECK(mirror, JVMTI_ERROR_INVALID_OBJECT); | |
2550 NULL_CHECK(hash_code_ptr, JVMTI_ERROR_NULL_POINTER); | |
2551 | |
2552 { | |
2553 jint result = (jint) mirror->identity_hash(); | |
2554 *hash_code_ptr = result; | |
2555 } | |
2556 return JVMTI_ERROR_NONE; | |
2557 } /* end GetObjectHashCode */ | |
2558 | |
2559 | |
2560 // info_ptr - pre-checked for NULL | |
2561 jvmtiError | |
2562 JvmtiEnv::GetObjectMonitorUsage(jobject object, jvmtiMonitorUsage* info_ptr) { | |
2563 JavaThread* calling_thread = JavaThread::current(); | |
2564 jvmtiError err = get_object_monitor_usage(calling_thread, object, info_ptr); | |
2565 if (err == JVMTI_ERROR_THREAD_NOT_SUSPENDED) { | |
2566 // Some of the critical threads were not suspended. go to a safepoint and try again | |
2567 VM_GetObjectMonitorUsage op(this, calling_thread, object, info_ptr); | |
2568 VMThread::execute(&op); | |
2569 err = op.result(); | |
2570 } | |
2571 return err; | |
2572 } /* end GetObjectMonitorUsage */ | |
2573 | |
2574 | |
2575 // | |
2576 // Field functions | |
2577 // | |
2578 | |
2579 // name_ptr - NULL is a valid value, must be checked | |
2580 // signature_ptr - NULL is a valid value, must be checked | |
2581 // generic_ptr - NULL is a valid value, must be checked | |
2582 jvmtiError | |
2583 JvmtiEnv::GetFieldName(fieldDescriptor* fdesc_ptr, char** name_ptr, char** signature_ptr, char** generic_ptr) { | |
2584 JavaThread* current_thread = JavaThread::current(); | |
2585 ResourceMark rm(current_thread); | |
2586 if (name_ptr == NULL) { | |
2587 // just don't return the name | |
2588 } else { | |
2589 const char* fieldName = fdesc_ptr->name()->as_C_string(); | |
2590 *name_ptr = (char*) jvmtiMalloc(strlen(fieldName) + 1); | |
2591 if (*name_ptr == NULL) | |
2592 return JVMTI_ERROR_OUT_OF_MEMORY; | |
2593 strcpy(*name_ptr, fieldName); | |
2594 } | |
2595 if (signature_ptr== NULL) { | |
2596 // just don't return the signature | |
2597 } else { | |
2598 const char* fieldSignature = fdesc_ptr->signature()->as_C_string(); | |
2599 *signature_ptr = (char*) jvmtiMalloc(strlen(fieldSignature) + 1); | |
2600 if (*signature_ptr == NULL) | |
2601 return JVMTI_ERROR_OUT_OF_MEMORY; | |
2602 strcpy(*signature_ptr, fieldSignature); | |
2603 } | |
2604 if (generic_ptr != NULL) { | |
2605 *generic_ptr = NULL; | |
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2606 Symbol* soop = fdesc_ptr->generic_signature(); |
0 | 2607 if (soop != NULL) { |
2608 const char* gen_sig = soop->as_C_string(); | |
2609 if (gen_sig != NULL) { | |
2610 jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr); | |
2611 if (err != JVMTI_ERROR_NONE) { | |
2612 return err; | |
2613 } | |
2614 strcpy(*generic_ptr, gen_sig); | |
2615 } | |
2616 } | |
2617 } | |
2618 return JVMTI_ERROR_NONE; | |
2619 } /* end GetFieldName */ | |
2620 | |
2621 | |
2622 // declaring_class_ptr - pre-checked for NULL | |
2623 jvmtiError | |
2624 JvmtiEnv::GetFieldDeclaringClass(fieldDescriptor* fdesc_ptr, jclass* declaring_class_ptr) { | |
2625 | |
2626 *declaring_class_ptr = get_jni_class_non_null(fdesc_ptr->field_holder()); | |
2627 return JVMTI_ERROR_NONE; | |
2628 } /* end GetFieldDeclaringClass */ | |
2629 | |
2630 | |
2631 // modifiers_ptr - pre-checked for NULL | |
2632 jvmtiError | |
2633 JvmtiEnv::GetFieldModifiers(fieldDescriptor* fdesc_ptr, jint* modifiers_ptr) { | |
2634 | |
2635 AccessFlags resultFlags = fdesc_ptr->access_flags(); | |
2636 jint result = resultFlags.as_int(); | |
2637 *modifiers_ptr = result; | |
2638 | |
2639 return JVMTI_ERROR_NONE; | |
2640 } /* end GetFieldModifiers */ | |
2641 | |
2642 | |
2643 // is_synthetic_ptr - pre-checked for NULL | |
2644 jvmtiError | |
2645 JvmtiEnv::IsFieldSynthetic(fieldDescriptor* fdesc_ptr, jboolean* is_synthetic_ptr) { | |
2646 *is_synthetic_ptr = fdesc_ptr->is_synthetic(); | |
2647 return JVMTI_ERROR_NONE; | |
2648 } /* end IsFieldSynthetic */ | |
2649 | |
2650 | |
2651 // | |
2652 // Method functions | |
2653 // | |
2654 | |
2655 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2656 // name_ptr - NULL is a valid value, must be checked | |
2657 // signature_ptr - NULL is a valid value, must be checked | |
2658 // generic_ptr - NULL is a valid value, must be checked | |
2659 jvmtiError | |
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2660 JvmtiEnv::GetMethodName(Method* method_oop, char** name_ptr, char** signature_ptr, char** generic_ptr) { |
0 | 2661 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
2662 JavaThread* current_thread = JavaThread::current(); | |
2663 | |
2664 ResourceMark rm(current_thread); // get the utf8 name and signature | |
2665 if (name_ptr == NULL) { | |
2666 // just don't return the name | |
2667 } else { | |
2668 const char* utf8_name = (const char *) method_oop->name()->as_utf8(); | |
2669 *name_ptr = (char *) jvmtiMalloc(strlen(utf8_name)+1); | |
2670 strcpy(*name_ptr, utf8_name); | |
2671 } | |
2672 if (signature_ptr == NULL) { | |
2673 // just don't return the signature | |
2674 } else { | |
2675 const char* utf8_signature = (const char *) method_oop->signature()->as_utf8(); | |
2676 *signature_ptr = (char *) jvmtiMalloc(strlen(utf8_signature) + 1); | |
2677 strcpy(*signature_ptr, utf8_signature); | |
2678 } | |
2679 | |
2680 if (generic_ptr != NULL) { | |
2681 *generic_ptr = NULL; | |
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2682 Symbol* soop = method_oop->generic_signature(); |
0 | 2683 if (soop != NULL) { |
2684 const char* gen_sig = soop->as_C_string(); | |
2685 if (gen_sig != NULL) { | |
2686 jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr); | |
2687 if (err != JVMTI_ERROR_NONE) { | |
2688 return err; | |
2689 } | |
2690 strcpy(*generic_ptr, gen_sig); | |
2691 } | |
2692 } | |
2693 } | |
2694 return JVMTI_ERROR_NONE; | |
2695 } /* end GetMethodName */ | |
2696 | |
2697 | |
2698 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2699 // declaring_class_ptr - pre-checked for NULL | |
2700 jvmtiError | |
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2701 JvmtiEnv::GetMethodDeclaringClass(Method* method_oop, jclass* declaring_class_ptr) { |
0 | 2702 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
2703 (*declaring_class_ptr) = get_jni_class_non_null(method_oop->method_holder()); | |
2704 return JVMTI_ERROR_NONE; | |
2705 } /* end GetMethodDeclaringClass */ | |
2706 | |
2707 | |
2708 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2709 // modifiers_ptr - pre-checked for NULL | |
2710 jvmtiError | |
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2711 JvmtiEnv::GetMethodModifiers(Method* method_oop, jint* modifiers_ptr) { |
0 | 2712 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
2713 (*modifiers_ptr) = method_oop->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
2714 return JVMTI_ERROR_NONE; | |
2715 } /* end GetMethodModifiers */ | |
2716 | |
2717 | |
2718 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2719 // max_ptr - pre-checked for NULL | |
2720 jvmtiError | |
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2721 JvmtiEnv::GetMaxLocals(Method* method_oop, jint* max_ptr) { |
0 | 2722 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
2723 // get max stack | |
2724 (*max_ptr) = method_oop->max_locals(); | |
2725 return JVMTI_ERROR_NONE; | |
2726 } /* end GetMaxLocals */ | |
2727 | |
2728 | |
2729 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2730 // size_ptr - pre-checked for NULL | |
2731 jvmtiError | |
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2732 JvmtiEnv::GetArgumentsSize(Method* method_oop, jint* size_ptr) { |
0 | 2733 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
2734 // get size of arguments | |
2735 | |
2736 (*size_ptr) = method_oop->size_of_parameters(); | |
2737 return JVMTI_ERROR_NONE; | |
2738 } /* end GetArgumentsSize */ | |
2739 | |
2740 | |
2741 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2742 // entry_count_ptr - pre-checked for NULL | |
2743 // table_ptr - pre-checked for NULL | |
2744 jvmtiError | |
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2745 JvmtiEnv::GetLineNumberTable(Method* method_oop, jint* entry_count_ptr, jvmtiLineNumberEntry** table_ptr) { |
0 | 2746 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
2747 if (!method_oop->has_linenumber_table()) { | |
2748 return (JVMTI_ERROR_ABSENT_INFORMATION); | |
2749 } | |
2750 | |
2751 // The line number table is compressed so we don't know how big it is until decompressed. | |
2752 // Decompression is really fast so we just do it twice. | |
2753 | |
2754 // Compute size of table | |
2755 jint num_entries = 0; | |
2756 CompressedLineNumberReadStream stream(method_oop->compressed_linenumber_table()); | |
2757 while (stream.read_pair()) { | |
2758 num_entries++; | |
2759 } | |
2760 jvmtiLineNumberEntry *jvmti_table = | |
2761 (jvmtiLineNumberEntry *)jvmtiMalloc(num_entries * (sizeof(jvmtiLineNumberEntry))); | |
2762 | |
2763 // Fill jvmti table | |
2764 if (num_entries > 0) { | |
2765 int index = 0; | |
2766 CompressedLineNumberReadStream stream(method_oop->compressed_linenumber_table()); | |
2767 while (stream.read_pair()) { | |
2768 jvmti_table[index].start_location = (jlocation) stream.bci(); | |
2769 jvmti_table[index].line_number = (jint) stream.line(); | |
2770 index++; | |
2771 } | |
2772 assert(index == num_entries, "sanity check"); | |
2773 } | |
2774 | |
2775 // Set up results | |
2776 (*entry_count_ptr) = num_entries; | |
2777 (*table_ptr) = jvmti_table; | |
2778 | |
2779 return JVMTI_ERROR_NONE; | |
2780 } /* end GetLineNumberTable */ | |
2781 | |
2782 | |
2783 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2784 // start_location_ptr - pre-checked for NULL | |
2785 // end_location_ptr - pre-checked for NULL | |
2786 jvmtiError | |
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2787 JvmtiEnv::GetMethodLocation(Method* method_oop, jlocation* start_location_ptr, jlocation* end_location_ptr) { |
0 | 2788 |
2789 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2790 // get start and end location | |
2791 (*end_location_ptr) = (jlocation) (method_oop->code_size() - 1); | |
2792 if (method_oop->code_size() == 0) { | |
2793 // there is no code so there is no start location | |
2794 (*start_location_ptr) = (jlocation)(-1); | |
2795 } else { | |
2796 (*start_location_ptr) = (jlocation)(0); | |
2797 } | |
2798 | |
2799 return JVMTI_ERROR_NONE; | |
2800 } /* end GetMethodLocation */ | |
2801 | |
2802 | |
2803 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2804 // entry_count_ptr - pre-checked for NULL | |
2805 // table_ptr - pre-checked for NULL | |
2806 jvmtiError | |
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2807 JvmtiEnv::GetLocalVariableTable(Method* method_oop, jint* entry_count_ptr, jvmtiLocalVariableEntry** table_ptr) { |
0 | 2808 |
2809 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); | |
2810 JavaThread* current_thread = JavaThread::current(); | |
2811 | |
2812 // does the klass have any local variable information? | |
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2813 InstanceKlass* ik = method_oop->method_holder(); |
0 | 2814 if (!ik->access_flags().has_localvariable_table()) { |
2815 return (JVMTI_ERROR_ABSENT_INFORMATION); | |
2816 } | |
2817 | |
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2818 ConstantPool* constants = method_oop->constants(); |
0 | 2819 NULL_CHECK(constants, JVMTI_ERROR_ABSENT_INFORMATION); |
2820 | |
2821 // in the vm localvariable table representation, 6 consecutive elements in the table | |
2822 // represent a 6-tuple of shorts | |
2823 // [start_pc, length, name_index, descriptor_index, signature_index, index] | |
2824 jint num_entries = method_oop->localvariable_table_length(); | |
2825 jvmtiLocalVariableEntry *jvmti_table = (jvmtiLocalVariableEntry *) | |
2826 jvmtiMalloc(num_entries * (sizeof(jvmtiLocalVariableEntry))); | |
2827 | |
2828 if (num_entries > 0) { | |
2829 LocalVariableTableElement* table = method_oop->localvariable_table_start(); | |
2830 for (int i = 0; i < num_entries; i++) { | |
2831 // get the 5 tuple information from the vm table | |
2832 jlocation start_location = (jlocation) table[i].start_bci; | |
2833 jint length = (jint) table[i].length; | |
2834 int name_index = (int) table[i].name_cp_index; | |
2835 int signature_index = (int) table[i].descriptor_cp_index; | |
2836 int generic_signature_index = (int) table[i].signature_cp_index; | |
2837 jint slot = (jint) table[i].slot; | |
2838 | |
2839 // get utf8 name and signature | |
2840 char *name_buf = NULL; | |
2841 char *sig_buf = NULL; | |
2842 char *gen_sig_buf = NULL; | |
2843 { | |
2844 ResourceMark rm(current_thread); | |
2845 | |
2846 const char *utf8_name = (const char *) constants->symbol_at(name_index)->as_utf8(); | |
2847 name_buf = (char *) jvmtiMalloc(strlen(utf8_name)+1); | |
2848 strcpy(name_buf, utf8_name); | |
2849 | |
2850 const char *utf8_signature = (const char *) constants->symbol_at(signature_index)->as_utf8(); | |
2851 sig_buf = (char *) jvmtiMalloc(strlen(utf8_signature)+1); | |
2852 strcpy(sig_buf, utf8_signature); | |
2853 | |
2854 if (generic_signature_index > 0) { | |
2855 const char *utf8_gen_sign = (const char *) | |
2856 constants->symbol_at(generic_signature_index)->as_utf8(); | |
2857 gen_sig_buf = (char *) jvmtiMalloc(strlen(utf8_gen_sign)+1); | |
2858 strcpy(gen_sig_buf, utf8_gen_sign); | |
2859 } | |
2860 } | |
2861 | |
2862 // fill in the jvmti local variable table | |
2863 jvmti_table[i].start_location = start_location; | |
2864 jvmti_table[i].length = length; | |
2865 jvmti_table[i].name = name_buf; | |
2866 jvmti_table[i].signature = sig_buf; | |
2867 jvmti_table[i].generic_signature = gen_sig_buf; | |
2868 jvmti_table[i].slot = slot; | |
2869 } | |
2870 } | |
2871 | |
2872 // set results | |
2873 (*entry_count_ptr) = num_entries; | |
2874 (*table_ptr) = jvmti_table; | |
2875 | |
2876 return JVMTI_ERROR_NONE; | |
2877 } /* end GetLocalVariableTable */ | |
2878 | |
2879 | |
2880 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2881 // bytecode_count_ptr - pre-checked for NULL | |
2882 // bytecodes_ptr - pre-checked for NULL | |
2883 jvmtiError | |
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2884 JvmtiEnv::GetBytecodes(Method* method_oop, jint* bytecode_count_ptr, unsigned char** bytecodes_ptr) { |
0 | 2885 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
2886 | |
2887 HandleMark hm; | |
2888 methodHandle method(method_oop); | |
2889 jint size = (jint)method->code_size(); | |
2890 jvmtiError err = allocate(size, bytecodes_ptr); | |
2891 if (err != JVMTI_ERROR_NONE) { | |
2892 return err; | |
2893 } | |
2894 | |
2895 (*bytecode_count_ptr) = size; | |
2896 // get byte codes | |
2897 JvmtiClassFileReconstituter::copy_bytecodes(method, *bytecodes_ptr); | |
2898 | |
2899 return JVMTI_ERROR_NONE; | |
2900 } /* end GetBytecodes */ | |
2901 | |
2902 | |
2903 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2904 // is_native_ptr - pre-checked for NULL | |
2905 jvmtiError | |
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2906 JvmtiEnv::IsMethodNative(Method* method_oop, jboolean* is_native_ptr) { |
0 | 2907 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
2908 (*is_native_ptr) = method_oop->is_native(); | |
2909 return JVMTI_ERROR_NONE; | |
2910 } /* end IsMethodNative */ | |
2911 | |
2912 | |
2913 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2914 // is_synthetic_ptr - pre-checked for NULL | |
2915 jvmtiError | |
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2916 JvmtiEnv::IsMethodSynthetic(Method* method_oop, jboolean* is_synthetic_ptr) { |
0 | 2917 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
2918 (*is_synthetic_ptr) = method_oop->is_synthetic(); | |
2919 return JVMTI_ERROR_NONE; | |
2920 } /* end IsMethodSynthetic */ | |
2921 | |
2922 | |
2923 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method | |
2924 // is_obsolete_ptr - pre-checked for NULL | |
2925 jvmtiError | |
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2926 JvmtiEnv::IsMethodObsolete(Method* method_oop, jboolean* is_obsolete_ptr) { |
1121 | 2927 if (use_version_1_0_semantics() && |
2928 get_capabilities()->can_redefine_classes == 0) { | |
2929 // This JvmtiEnv requested version 1.0 semantics and this function | |
2930 // requires the can_redefine_classes capability in version 1.0 so | |
2931 // we need to return an error here. | |
2932 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; | |
2933 } | |
2934 | |
0 | 2935 if (method_oop == NULL || method_oop->is_obsolete()) { |
2936 *is_obsolete_ptr = true; | |
2937 } else { | |
2938 *is_obsolete_ptr = false; | |
2939 } | |
2940 return JVMTI_ERROR_NONE; | |
2941 } /* end IsMethodObsolete */ | |
2942 | |
2943 // | |
2944 // Raw Monitor functions | |
2945 // | |
2946 | |
2947 // name - pre-checked for NULL | |
2948 // monitor_ptr - pre-checked for NULL | |
2949 jvmtiError | |
2950 JvmtiEnv::CreateRawMonitor(const char* name, jrawMonitorID* monitor_ptr) { | |
2951 JvmtiRawMonitor* rmonitor = new JvmtiRawMonitor(name); | |
2952 NULL_CHECK(rmonitor, JVMTI_ERROR_OUT_OF_MEMORY); | |
2953 | |
2954 *monitor_ptr = (jrawMonitorID)rmonitor; | |
2955 | |
2956 return JVMTI_ERROR_NONE; | |
2957 } /* end CreateRawMonitor */ | |
2958 | |
2959 | |
2960 // rmonitor - pre-checked for validity | |
2961 jvmtiError | |
2962 JvmtiEnv::DestroyRawMonitor(JvmtiRawMonitor * rmonitor) { | |
2963 if (Threads::number_of_threads() == 0) { | |
2964 // Remove this monitor from pending raw monitors list | |
2965 // if it has entered in onload or start phase. | |
2966 JvmtiPendingMonitors::destroy(rmonitor); | |
2967 } else { | |
2968 Thread* thread = Thread::current(); | |
2969 if (rmonitor->is_entered(thread)) { | |
2970 // The caller owns this monitor which we are about to destroy. | |
2971 // We exit the underlying synchronization object so that the | |
2972 // "delete monitor" call below can work without an assertion | |
2973 // failure on systems that don't like destroying synchronization | |
2974 // objects that are locked. | |
2975 int r; | |
2976 intptr_t recursion = rmonitor->recursions(); | |
2977 for (intptr_t i=0; i <= recursion; i++) { | |
2978 r = rmonitor->raw_exit(thread); | |
2979 assert(r == ObjectMonitor::OM_OK, "raw_exit should have worked"); | |
2980 if (r != ObjectMonitor::OM_OK) { // robustness | |
2981 return JVMTI_ERROR_INTERNAL; | |
2982 } | |
2983 } | |
2984 } | |
2985 if (rmonitor->owner() != NULL) { | |
2986 // The caller is trying to destroy a monitor that is locked by | |
2987 // someone else. While this is not forbidden by the JVMTI | |
2988 // spec, it will cause an assertion failure on systems that don't | |
2989 // like destroying synchronization objects that are locked. | |
2990 // We indicate a problem with the error return (and leak the | |
2991 // monitor's memory). | |
2992 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
2993 } | |
2994 } | |
2995 | |
2996 delete rmonitor; | |
2997 | |
2998 return JVMTI_ERROR_NONE; | |
2999 } /* end DestroyRawMonitor */ | |
3000 | |
3001 | |
3002 // rmonitor - pre-checked for validity | |
3003 jvmtiError | |
3004 JvmtiEnv::RawMonitorEnter(JvmtiRawMonitor * rmonitor) { | |
3005 if (Threads::number_of_threads() == 0) { | |
3006 // No JavaThreads exist so ObjectMonitor enter cannot be | |
3007 // used, add this raw monitor to the pending list. | |
3008 // The pending monitors will be actually entered when | |
3009 // the VM is setup. | |
3010 // See transition_pending_raw_monitors in create_vm() | |
3011 // in thread.cpp. | |
3012 JvmtiPendingMonitors::enter(rmonitor); | |
3013 } else { | |
3014 int r; | |
3015 Thread* thread = Thread::current(); | |
3016 | |
3017 if (thread->is_Java_thread()) { | |
3018 JavaThread* current_thread = (JavaThread*)thread; | |
3019 | |
3020 #ifdef PROPER_TRANSITIONS | |
3021 // Not really unknown but ThreadInVMfromNative does more than we want | |
3022 ThreadInVMfromUnknown __tiv; | |
3023 { | |
3024 ThreadBlockInVM __tbivm(current_thread); | |
3025 r = rmonitor->raw_enter(current_thread); | |
3026 } | |
3027 #else | |
3028 /* Transition to thread_blocked without entering vm state */ | |
3029 /* This is really evil. Normally you can't undo _thread_blocked */ | |
3030 /* transitions like this because it would cause us to miss a */ | |
3031 /* safepoint but since the thread was already in _thread_in_native */ | |
3032 /* the thread is not leaving a safepoint safe state and it will */ | |
3033 /* block when it tries to return from native. We can't safepoint */ | |
3034 /* block in here because we could deadlock the vmthread. Blech. */ | |
3035 | |
3036 JavaThreadState state = current_thread->thread_state(); | |
3037 assert(state == _thread_in_native, "Must be _thread_in_native"); | |
3038 // frame should already be walkable since we are in native | |
3039 assert(!current_thread->has_last_Java_frame() || | |
3040 current_thread->frame_anchor()->walkable(), "Must be walkable"); | |
3041 current_thread->set_thread_state(_thread_blocked); | |
3042 | |
3043 r = rmonitor->raw_enter(current_thread); | |
3044 // restore state, still at a safepoint safe state | |
3045 current_thread->set_thread_state(state); | |
3046 | |
3047 #endif /* PROPER_TRANSITIONS */ | |
3048 assert(r == ObjectMonitor::OM_OK, "raw_enter should have worked"); | |
3049 } else { | |
3050 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
3051 r = rmonitor->raw_enter(thread); | |
3052 } else { | |
3053 ShouldNotReachHere(); | |
3054 } | |
3055 } | |
3056 | |
3057 if (r != ObjectMonitor::OM_OK) { // robustness | |
3058 return JVMTI_ERROR_INTERNAL; | |
3059 } | |
3060 } | |
3061 return JVMTI_ERROR_NONE; | |
3062 } /* end RawMonitorEnter */ | |
3063 | |
3064 | |
3065 // rmonitor - pre-checked for validity | |
3066 jvmtiError | |
3067 JvmtiEnv::RawMonitorExit(JvmtiRawMonitor * rmonitor) { | |
3068 jvmtiError err = JVMTI_ERROR_NONE; | |
3069 | |
3070 if (Threads::number_of_threads() == 0) { | |
3071 // No JavaThreads exist so just remove this monitor from the pending list. | |
3072 // Bool value from exit is false if rmonitor is not in the list. | |
3073 if (!JvmtiPendingMonitors::exit(rmonitor)) { | |
3074 err = JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3075 } | |
3076 } else { | |
3077 int r; | |
3078 Thread* thread = Thread::current(); | |
3079 | |
3080 if (thread->is_Java_thread()) { | |
3081 JavaThread* current_thread = (JavaThread*)thread; | |
3082 #ifdef PROPER_TRANSITIONS | |
3083 // Not really unknown but ThreadInVMfromNative does more than we want | |
3084 ThreadInVMfromUnknown __tiv; | |
3085 #endif /* PROPER_TRANSITIONS */ | |
3086 r = rmonitor->raw_exit(current_thread); | |
3087 } else { | |
3088 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
3089 r = rmonitor->raw_exit(thread); | |
3090 } else { | |
3091 ShouldNotReachHere(); | |
3092 } | |
3093 } | |
3094 | |
3095 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
3096 err = JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3097 } else { | |
3098 assert(r == ObjectMonitor::OM_OK, "raw_exit should have worked"); | |
3099 if (r != ObjectMonitor::OM_OK) { // robustness | |
3100 err = JVMTI_ERROR_INTERNAL; | |
3101 } | |
3102 } | |
3103 } | |
3104 return err; | |
3105 } /* end RawMonitorExit */ | |
3106 | |
3107 | |
3108 // rmonitor - pre-checked for validity | |
3109 jvmtiError | |
3110 JvmtiEnv::RawMonitorWait(JvmtiRawMonitor * rmonitor, jlong millis) { | |
3111 int r; | |
3112 Thread* thread = Thread::current(); | |
3113 | |
3114 if (thread->is_Java_thread()) { | |
3115 JavaThread* current_thread = (JavaThread*)thread; | |
3116 #ifdef PROPER_TRANSITIONS | |
3117 // Not really unknown but ThreadInVMfromNative does more than we want | |
3118 ThreadInVMfromUnknown __tiv; | |
3119 { | |
3120 ThreadBlockInVM __tbivm(current_thread); | |
3121 r = rmonitor->raw_wait(millis, true, current_thread); | |
3122 } | |
3123 #else | |
3124 /* Transition to thread_blocked without entering vm state */ | |
3125 /* This is really evil. Normally you can't undo _thread_blocked */ | |
3126 /* transitions like this because it would cause us to miss a */ | |
3127 /* safepoint but since the thread was already in _thread_in_native */ | |
3128 /* the thread is not leaving a safepoint safe state and it will */ | |
3129 /* block when it tries to return from native. We can't safepoint */ | |
3130 /* block in here because we could deadlock the vmthread. Blech. */ | |
3131 | |
3132 JavaThreadState state = current_thread->thread_state(); | |
3133 assert(state == _thread_in_native, "Must be _thread_in_native"); | |
3134 // frame should already be walkable since we are in native | |
3135 assert(!current_thread->has_last_Java_frame() || | |
3136 current_thread->frame_anchor()->walkable(), "Must be walkable"); | |
3137 current_thread->set_thread_state(_thread_blocked); | |
3138 | |
3139 r = rmonitor->raw_wait(millis, true, current_thread); | |
3140 // restore state, still at a safepoint safe state | |
3141 current_thread->set_thread_state(state); | |
3142 | |
3143 #endif /* PROPER_TRANSITIONS */ | |
3144 } else { | |
3145 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
3146 r = rmonitor->raw_wait(millis, true, thread); | |
3147 } else { | |
3148 ShouldNotReachHere(); | |
3149 } | |
3150 } | |
3151 | |
3152 switch (r) { | |
3153 case ObjectMonitor::OM_INTERRUPTED: | |
3154 return JVMTI_ERROR_INTERRUPT; | |
3155 case ObjectMonitor::OM_ILLEGAL_MONITOR_STATE: | |
3156 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3157 } | |
3158 assert(r == ObjectMonitor::OM_OK, "raw_wait should have worked"); | |
3159 if (r != ObjectMonitor::OM_OK) { // robustness | |
3160 return JVMTI_ERROR_INTERNAL; | |
3161 } | |
3162 | |
3163 return JVMTI_ERROR_NONE; | |
3164 } /* end RawMonitorWait */ | |
3165 | |
3166 | |
3167 // rmonitor - pre-checked for validity | |
3168 jvmtiError | |
3169 JvmtiEnv::RawMonitorNotify(JvmtiRawMonitor * rmonitor) { | |
3170 int r; | |
3171 Thread* thread = Thread::current(); | |
3172 | |
3173 if (thread->is_Java_thread()) { | |
3174 JavaThread* current_thread = (JavaThread*)thread; | |
3175 // Not really unknown but ThreadInVMfromNative does more than we want | |
3176 ThreadInVMfromUnknown __tiv; | |
3177 r = rmonitor->raw_notify(current_thread); | |
3178 } else { | |
3179 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
3180 r = rmonitor->raw_notify(thread); | |
3181 } else { | |
3182 ShouldNotReachHere(); | |
3183 } | |
3184 } | |
3185 | |
3186 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
3187 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3188 } | |
3189 assert(r == ObjectMonitor::OM_OK, "raw_notify should have worked"); | |
3190 if (r != ObjectMonitor::OM_OK) { // robustness | |
3191 return JVMTI_ERROR_INTERNAL; | |
3192 } | |
3193 | |
3194 return JVMTI_ERROR_NONE; | |
3195 } /* end RawMonitorNotify */ | |
3196 | |
3197 | |
3198 // rmonitor - pre-checked for validity | |
3199 jvmtiError | |
3200 JvmtiEnv::RawMonitorNotifyAll(JvmtiRawMonitor * rmonitor) { | |
3201 int r; | |
3202 Thread* thread = Thread::current(); | |
3203 | |
3204 if (thread->is_Java_thread()) { | |
3205 JavaThread* current_thread = (JavaThread*)thread; | |
3206 ThreadInVMfromUnknown __tiv; | |
3207 r = rmonitor->raw_notifyAll(current_thread); | |
3208 } else { | |
3209 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { | |
3210 r = rmonitor->raw_notifyAll(thread); | |
3211 } else { | |
3212 ShouldNotReachHere(); | |
3213 } | |
3214 } | |
3215 | |
3216 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { | |
3217 return JVMTI_ERROR_NOT_MONITOR_OWNER; | |
3218 } | |
3219 assert(r == ObjectMonitor::OM_OK, "raw_notifyAll should have worked"); | |
3220 if (r != ObjectMonitor::OM_OK) { // robustness | |
3221 return JVMTI_ERROR_INTERNAL; | |
3222 } | |
3223 | |
3224 return JVMTI_ERROR_NONE; | |
3225 } /* end RawMonitorNotifyAll */ | |
3226 | |
3227 | |
3228 // | |
3229 // JNI Function Interception functions | |
3230 // | |
3231 | |
3232 | |
3233 // function_table - pre-checked for NULL | |
3234 jvmtiError | |
3235 JvmtiEnv::SetJNIFunctionTable(const jniNativeInterface* function_table) { | |
3236 // Copy jni function table at safepoint. | |
3237 VM_JNIFunctionTableCopier copier(function_table); | |
3238 VMThread::execute(&copier); | |
3239 | |
3240 return JVMTI_ERROR_NONE; | |
3241 } /* end SetJNIFunctionTable */ | |
3242 | |
3243 | |
3244 // function_table - pre-checked for NULL | |
3245 jvmtiError | |
3246 JvmtiEnv::GetJNIFunctionTable(jniNativeInterface** function_table) { | |
3247 *function_table=(jniNativeInterface*)jvmtiMalloc(sizeof(jniNativeInterface)); | |
3248 if (*function_table == NULL) | |
3249 return JVMTI_ERROR_OUT_OF_MEMORY; | |
3250 memcpy(*function_table,(JavaThread::current())->get_jni_functions(),sizeof(jniNativeInterface)); | |
3251 return JVMTI_ERROR_NONE; | |
3252 } /* end GetJNIFunctionTable */ | |
3253 | |
3254 | |
3255 // | |
3256 // Event Management functions | |
3257 // | |
3258 | |
3259 jvmtiError | |
3260 JvmtiEnv::GenerateEvents(jvmtiEvent event_type) { | |
3261 // can only generate two event types | |
3262 if (event_type != JVMTI_EVENT_COMPILED_METHOD_LOAD && | |
3263 event_type != JVMTI_EVENT_DYNAMIC_CODE_GENERATED) { | |
3264 return JVMTI_ERROR_ILLEGAL_ARGUMENT; | |
3265 } | |
3266 | |
3267 // for compiled_method_load events we must check that the environment | |
3268 // has the can_generate_compiled_method_load_events capability. | |
3269 if (event_type == JVMTI_EVENT_COMPILED_METHOD_LOAD) { | |
3270 if (get_capabilities()->can_generate_compiled_method_load_events == 0) { | |
3271 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; | |
3272 } | |
3273 return JvmtiCodeBlobEvents::generate_compiled_method_load_events(this); | |
3274 } else { | |
3275 return JvmtiCodeBlobEvents::generate_dynamic_code_events(this); | |
3276 } | |
3277 | |
3278 } /* end GenerateEvents */ | |
3279 | |
3280 | |
3281 // | |
3282 // Extension Mechanism functions | |
3283 // | |
3284 | |
3285 // extension_count_ptr - pre-checked for NULL | |
3286 // extensions - pre-checked for NULL | |
3287 jvmtiError | |
3288 JvmtiEnv::GetExtensionFunctions(jint* extension_count_ptr, jvmtiExtensionFunctionInfo** extensions) { | |
3289 return JvmtiExtensions::get_functions(this, extension_count_ptr, extensions); | |
3290 } /* end GetExtensionFunctions */ | |
3291 | |
3292 | |
3293 // extension_count_ptr - pre-checked for NULL | |
3294 // extensions - pre-checked for NULL | |
3295 jvmtiError | |
3296 JvmtiEnv::GetExtensionEvents(jint* extension_count_ptr, jvmtiExtensionEventInfo** extensions) { | |
3297 return JvmtiExtensions::get_events(this, extension_count_ptr, extensions); | |
3298 } /* end GetExtensionEvents */ | |
3299 | |
3300 | |
3301 // callback - NULL is a valid value, must be checked | |
3302 jvmtiError | |
3303 JvmtiEnv::SetExtensionEventCallback(jint extension_event_index, jvmtiExtensionEvent callback) { | |
3304 return JvmtiExtensions::set_event_callback(this, extension_event_index, callback); | |
3305 } /* end SetExtensionEventCallback */ | |
3306 | |
3307 // | |
3308 // Timers functions | |
3309 // | |
3310 | |
3311 // info_ptr - pre-checked for NULL | |
3312 jvmtiError | |
3313 JvmtiEnv::GetCurrentThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) { | |
3314 os::current_thread_cpu_time_info(info_ptr); | |
3315 return JVMTI_ERROR_NONE; | |
3316 } /* end GetCurrentThreadCpuTimerInfo */ | |
3317 | |
3318 | |
3319 // nanos_ptr - pre-checked for NULL | |
3320 jvmtiError | |
3321 JvmtiEnv::GetCurrentThreadCpuTime(jlong* nanos_ptr) { | |
3322 *nanos_ptr = os::current_thread_cpu_time(); | |
3323 return JVMTI_ERROR_NONE; | |
3324 } /* end GetCurrentThreadCpuTime */ | |
3325 | |
3326 | |
3327 // info_ptr - pre-checked for NULL | |
3328 jvmtiError | |
3329 JvmtiEnv::GetThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) { | |
3330 os::thread_cpu_time_info(info_ptr); | |
3331 return JVMTI_ERROR_NONE; | |
3332 } /* end GetThreadCpuTimerInfo */ | |
3333 | |
3334 | |
3335 // Threads_lock NOT held, java_thread not protected by lock | |
3336 // java_thread - pre-checked | |
3337 // nanos_ptr - pre-checked for NULL | |
3338 jvmtiError | |
3339 JvmtiEnv::GetThreadCpuTime(JavaThread* java_thread, jlong* nanos_ptr) { | |
3340 *nanos_ptr = os::thread_cpu_time(java_thread); | |
3341 return JVMTI_ERROR_NONE; | |
3342 } /* end GetThreadCpuTime */ | |
3343 | |
3344 | |
3345 // info_ptr - pre-checked for NULL | |
3346 jvmtiError | |
3347 JvmtiEnv::GetTimerInfo(jvmtiTimerInfo* info_ptr) { | |
3348 os::javaTimeNanos_info(info_ptr); | |
3349 return JVMTI_ERROR_NONE; | |
3350 } /* end GetTimerInfo */ | |
3351 | |
3352 | |
3353 // nanos_ptr - pre-checked for NULL | |
3354 jvmtiError | |
3355 JvmtiEnv::GetTime(jlong* nanos_ptr) { | |
3356 *nanos_ptr = os::javaTimeNanos(); | |
3357 return JVMTI_ERROR_NONE; | |
3358 } /* end GetTime */ | |
3359 | |
3360 | |
3361 // processor_count_ptr - pre-checked for NULL | |
3362 jvmtiError | |
3363 JvmtiEnv::GetAvailableProcessors(jint* processor_count_ptr) { | |
3364 *processor_count_ptr = os::active_processor_count(); | |
3365 return JVMTI_ERROR_NONE; | |
3366 } /* end GetAvailableProcessors */ | |
3367 | |
3368 // | |
3369 // System Properties functions | |
3370 // | |
3371 | |
3372 // count_ptr - pre-checked for NULL | |
3373 // property_ptr - pre-checked for NULL | |
3374 jvmtiError | |
3375 JvmtiEnv::GetSystemProperties(jint* count_ptr, char*** property_ptr) { | |
3376 jvmtiError err = JVMTI_ERROR_NONE; | |
3377 | |
3378 *count_ptr = Arguments::PropertyList_count(Arguments::system_properties()); | |
3379 | |
3380 err = allocate(*count_ptr * sizeof(char *), (unsigned char **)property_ptr); | |
3381 if (err != JVMTI_ERROR_NONE) { | |
3382 return err; | |
3383 } | |
3384 int i = 0 ; | |
3385 for (SystemProperty* p = Arguments::system_properties(); p != NULL && i < *count_ptr; p = p->next(), i++) { | |
3386 const char *key = p->key(); | |
3387 char **tmp_value = *property_ptr+i; | |
3388 err = allocate((strlen(key)+1) * sizeof(char), (unsigned char**)tmp_value); | |
3389 if (err == JVMTI_ERROR_NONE) { | |
3390 strcpy(*tmp_value, key); | |
3391 } else { | |
3392 // clean up previously allocated memory. | |
3393 for (int j=0; j<i; j++) { | |
3394 Deallocate((unsigned char*)*property_ptr+j); | |
3395 } | |
3396 Deallocate((unsigned char*)property_ptr); | |
3397 break; | |
3398 } | |
3399 } | |
3400 return err; | |
3401 } /* end GetSystemProperties */ | |
3402 | |
3403 | |
3404 // property - pre-checked for NULL | |
3405 // value_ptr - pre-checked for NULL | |
3406 jvmtiError | |
3407 JvmtiEnv::GetSystemProperty(const char* property, char** value_ptr) { | |
3408 jvmtiError err = JVMTI_ERROR_NONE; | |
3409 const char *value; | |
3410 | |
3411 value = Arguments::PropertyList_get_value(Arguments::system_properties(), property); | |
3412 if (value == NULL) { | |
3413 err = JVMTI_ERROR_NOT_AVAILABLE; | |
3414 } else { | |
3415 err = allocate((strlen(value)+1) * sizeof(char), (unsigned char **)value_ptr); | |
3416 if (err == JVMTI_ERROR_NONE) { | |
3417 strcpy(*value_ptr, value); | |
3418 } | |
3419 } | |
3420 return err; | |
3421 } /* end GetSystemProperty */ | |
3422 | |
3423 | |
3424 // property - pre-checked for NULL | |
3425 // value - NULL is a valid value, must be checked | |
3426 jvmtiError | |
2100
b1a2afa37ec4
7003271: Hotspot should track cumulative Java heap bytes allocated on a per-thread basis
phh
parents:
2019
diff
changeset
|
3427 JvmtiEnv::SetSystemProperty(const char* property, const char* value_ptr) { |
0 | 3428 jvmtiError err =JVMTI_ERROR_NOT_AVAILABLE; |
3429 | |
3430 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
3431 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
|
3432 if (p->set_value((char *)value_ptr)) { |
0 | 3433 err = JVMTI_ERROR_NONE; |
3434 } | |
3435 } | |
3436 } | |
3437 return err; | |
3438 } /* end SetSystemProperty */ |