|
1 /* |
|
2 * Copyright (c) 2003, 2017, Oracle and/or its affiliates. All rights reserved. |
|
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 * |
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
20 * or visit www.oracle.com if you need additional information or have any |
|
21 * questions. |
|
22 * |
|
23 */ |
|
24 |
|
25 #include "precompiled.hpp" |
|
26 #include "classfile/classLoaderExt.hpp" |
|
27 #include "classfile/javaClasses.inline.hpp" |
|
28 #include "classfile/stringTable.hpp" |
|
29 #include "classfile/modules.hpp" |
|
30 #include "classfile/systemDictionary.hpp" |
|
31 #include "classfile/vmSymbols.hpp" |
|
32 #include "interpreter/bytecodeStream.hpp" |
|
33 #include "interpreter/interpreter.hpp" |
|
34 #include "jvmtifiles/jvmtiEnv.hpp" |
|
35 #include "logging/log.hpp" |
|
36 #include "logging/logConfiguration.hpp" |
|
37 #include "memory/resourceArea.hpp" |
|
38 #include "memory/universe.inline.hpp" |
|
39 #include "oops/instanceKlass.hpp" |
|
40 #include "oops/objArrayOop.inline.hpp" |
|
41 #include "oops/oop.inline.hpp" |
|
42 #include "prims/jniCheck.hpp" |
|
43 #include "prims/jvm_misc.hpp" |
|
44 #include "prims/jvmtiAgentThread.hpp" |
|
45 #include "prims/jvmtiClassFileReconstituter.hpp" |
|
46 #include "prims/jvmtiCodeBlobEvents.hpp" |
|
47 #include "prims/jvmtiExtensions.hpp" |
|
48 #include "prims/jvmtiGetLoadedClasses.hpp" |
|
49 #include "prims/jvmtiImpl.hpp" |
|
50 #include "prims/jvmtiManageCapabilities.hpp" |
|
51 #include "prims/jvmtiRawMonitor.hpp" |
|
52 #include "prims/jvmtiRedefineClasses.hpp" |
|
53 #include "prims/jvmtiTagMap.hpp" |
|
54 #include "prims/jvmtiThreadState.inline.hpp" |
|
55 #include "prims/jvmtiUtil.hpp" |
|
56 #include "runtime/arguments.hpp" |
|
57 #include "runtime/deoptimization.hpp" |
|
58 #include "runtime/interfaceSupport.hpp" |
|
59 #include "runtime/javaCalls.hpp" |
|
60 #include "runtime/jfieldIDWorkaround.hpp" |
|
61 #include "runtime/osThread.hpp" |
|
62 #include "runtime/reflectionUtils.hpp" |
|
63 #include "runtime/signature.hpp" |
|
64 #include "runtime/thread.inline.hpp" |
|
65 #include "runtime/timerTrace.hpp" |
|
66 #include "runtime/vframe.hpp" |
|
67 #include "runtime/vmThread.hpp" |
|
68 #include "services/threadService.hpp" |
|
69 #include "utilities/exceptions.hpp" |
|
70 #include "utilities/preserveException.hpp" |
|
71 |
|
72 |
|
73 #define FIXLATER 0 // REMOVE this when completed. |
|
74 |
|
75 // FIXLATER: hook into JvmtiTrace |
|
76 #define TraceJVMTICalls false |
|
77 |
|
78 JvmtiEnv::JvmtiEnv(jint version) : JvmtiEnvBase(version) { |
|
79 } |
|
80 |
|
81 JvmtiEnv::~JvmtiEnv() { |
|
82 } |
|
83 |
|
84 JvmtiEnv* |
|
85 JvmtiEnv::create_a_jvmti(jint version) { |
|
86 return new JvmtiEnv(version); |
|
87 } |
|
88 |
|
89 // VM operation class to copy jni function table at safepoint. |
|
90 // More than one java threads or jvmti agents may be reading/ |
|
91 // modifying jni function tables. To reduce the risk of bad |
|
92 // interaction b/w these threads it is copied at safepoint. |
|
93 class VM_JNIFunctionTableCopier : public VM_Operation { |
|
94 private: |
|
95 const struct JNINativeInterface_ *_function_table; |
|
96 public: |
|
97 VM_JNIFunctionTableCopier(const struct JNINativeInterface_ *func_tbl) { |
|
98 _function_table = func_tbl; |
|
99 }; |
|
100 |
|
101 VMOp_Type type() const { return VMOp_JNIFunctionTableCopier; } |
|
102 void doit() { |
|
103 copy_jni_function_table(_function_table); |
|
104 }; |
|
105 }; |
|
106 |
|
107 // |
|
108 // Do not change the "prefix" marker below, everything above it is copied |
|
109 // unchanged into the filled stub, everything below is controlled by the |
|
110 // stub filler (only method bodies are carried forward, and then only for |
|
111 // functionality still in the spec). |
|
112 // |
|
113 // end file prefix |
|
114 |
|
115 // |
|
116 // Memory Management functions |
|
117 // |
|
118 |
|
119 // mem_ptr - pre-checked for NULL |
|
120 jvmtiError |
|
121 JvmtiEnv::Allocate(jlong size, unsigned char** mem_ptr) { |
|
122 return allocate(size, mem_ptr); |
|
123 } /* end Allocate */ |
|
124 |
|
125 |
|
126 // mem - NULL is a valid value, must be checked |
|
127 jvmtiError |
|
128 JvmtiEnv::Deallocate(unsigned char* mem) { |
|
129 return deallocate(mem); |
|
130 } /* end Deallocate */ |
|
131 |
|
132 // Threads_lock NOT held, java_thread not protected by lock |
|
133 // java_thread - pre-checked |
|
134 // data - NULL is a valid value, must be checked |
|
135 jvmtiError |
|
136 JvmtiEnv::SetThreadLocalStorage(JavaThread* java_thread, const void* data) { |
|
137 JvmtiThreadState* state = java_thread->jvmti_thread_state(); |
|
138 if (state == NULL) { |
|
139 if (data == NULL) { |
|
140 // leaving state unset same as data set to NULL |
|
141 return JVMTI_ERROR_NONE; |
|
142 } |
|
143 // otherwise, create the state |
|
144 state = JvmtiThreadState::state_for(java_thread); |
|
145 if (state == NULL) { |
|
146 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
|
147 } |
|
148 } |
|
149 state->env_thread_state(this)->set_agent_thread_local_storage_data((void*)data); |
|
150 return JVMTI_ERROR_NONE; |
|
151 } /* end SetThreadLocalStorage */ |
|
152 |
|
153 |
|
154 // Threads_lock NOT held |
|
155 // thread - NOT pre-checked |
|
156 // data_ptr - pre-checked for NULL |
|
157 jvmtiError |
|
158 JvmtiEnv::GetThreadLocalStorage(jthread thread, void** data_ptr) { |
|
159 JavaThread* current_thread = JavaThread::current(); |
|
160 if (thread == NULL) { |
|
161 JvmtiThreadState* state = current_thread->jvmti_thread_state(); |
|
162 *data_ptr = (state == NULL) ? NULL : |
|
163 state->env_thread_state(this)->get_agent_thread_local_storage_data(); |
|
164 } else { |
|
165 |
|
166 // jvmti_GetThreadLocalStorage is "in native" and doesn't transition |
|
167 // the thread to _thread_in_vm. However, when the TLS for a thread |
|
168 // other than the current thread is required we need to transition |
|
169 // from native so as to resolve the jthread. |
|
170 |
|
171 ThreadInVMfromNative __tiv(current_thread); |
|
172 VM_ENTRY_BASE(jvmtiError, JvmtiEnv::GetThreadLocalStorage , current_thread) |
|
173 debug_only(VMNativeEntryWrapper __vew;) |
|
174 |
|
175 oop thread_oop = JNIHandles::resolve_external_guard(thread); |
|
176 if (thread_oop == NULL) { |
|
177 return JVMTI_ERROR_INVALID_THREAD; |
|
178 } |
|
179 if (!thread_oop->is_a(SystemDictionary::Thread_klass())) { |
|
180 return JVMTI_ERROR_INVALID_THREAD; |
|
181 } |
|
182 JavaThread* java_thread = java_lang_Thread::thread(thread_oop); |
|
183 if (java_thread == NULL) { |
|
184 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
|
185 } |
|
186 JvmtiThreadState* state = java_thread->jvmti_thread_state(); |
|
187 *data_ptr = (state == NULL) ? NULL : |
|
188 state->env_thread_state(this)->get_agent_thread_local_storage_data(); |
|
189 } |
|
190 return JVMTI_ERROR_NONE; |
|
191 } /* end GetThreadLocalStorage */ |
|
192 |
|
193 // |
|
194 // Module functions |
|
195 // |
|
196 |
|
197 // module_count_ptr - pre-checked for NULL |
|
198 // modules_ptr - pre-checked for NULL |
|
199 jvmtiError |
|
200 JvmtiEnv::GetAllModules(jint* module_count_ptr, jobject** modules_ptr) { |
|
201 JvmtiModuleClosure jmc; |
|
202 |
|
203 return jmc.get_all_modules(this, module_count_ptr, modules_ptr); |
|
204 } /* end GetAllModules */ |
|
205 |
|
206 |
|
207 // class_loader - NULL is a valid value, must be pre-checked |
|
208 // package_name - pre-checked for NULL |
|
209 // module_ptr - pre-checked for NULL |
|
210 jvmtiError |
|
211 JvmtiEnv::GetNamedModule(jobject class_loader, const char* package_name, jobject* module_ptr) { |
|
212 JavaThread* THREAD = JavaThread::current(); // pass to macros |
|
213 ResourceMark rm(THREAD); |
|
214 |
|
215 Handle h_loader (THREAD, JNIHandles::resolve(class_loader)); |
|
216 // Check that loader is a subclass of java.lang.ClassLoader. |
|
217 if (h_loader.not_null() && !java_lang_ClassLoader::is_subclass(h_loader->klass())) { |
|
218 return JVMTI_ERROR_ILLEGAL_ARGUMENT; |
|
219 } |
|
220 jobject module = Modules::get_named_module(h_loader, package_name, THREAD); |
|
221 if (HAS_PENDING_EXCEPTION) { |
|
222 CLEAR_PENDING_EXCEPTION; |
|
223 return JVMTI_ERROR_INTERNAL; // unexpected exception |
|
224 } |
|
225 *module_ptr = module; |
|
226 return JVMTI_ERROR_NONE; |
|
227 } /* end GetNamedModule */ |
|
228 |
|
229 |
|
230 // module - pre-checked for NULL |
|
231 // to_module - pre-checked for NULL |
|
232 jvmtiError |
|
233 JvmtiEnv::AddModuleReads(jobject module, jobject to_module) { |
|
234 JavaThread* THREAD = JavaThread::current(); |
|
235 |
|
236 // check module |
|
237 Handle h_module(THREAD, JNIHandles::resolve(module)); |
|
238 if (!java_lang_Module::is_instance(h_module())) { |
|
239 return JVMTI_ERROR_INVALID_MODULE; |
|
240 } |
|
241 // check to_module |
|
242 Handle h_to_module(THREAD, JNIHandles::resolve(to_module)); |
|
243 if (!java_lang_Module::is_instance(h_to_module())) { |
|
244 return JVMTI_ERROR_INVALID_MODULE; |
|
245 } |
|
246 return JvmtiExport::add_module_reads(h_module, h_to_module, THREAD); |
|
247 } /* end AddModuleReads */ |
|
248 |
|
249 |
|
250 // module - pre-checked for NULL |
|
251 // pkg_name - pre-checked for NULL |
|
252 // to_module - pre-checked for NULL |
|
253 jvmtiError |
|
254 JvmtiEnv::AddModuleExports(jobject module, const char* pkg_name, jobject to_module) { |
|
255 JavaThread* THREAD = JavaThread::current(); |
|
256 Handle h_pkg = java_lang_String::create_from_str(pkg_name, THREAD); |
|
257 |
|
258 // check module |
|
259 Handle h_module(THREAD, JNIHandles::resolve(module)); |
|
260 if (!java_lang_Module::is_instance(h_module())) { |
|
261 return JVMTI_ERROR_INVALID_MODULE; |
|
262 } |
|
263 // check to_module |
|
264 Handle h_to_module(THREAD, JNIHandles::resolve(to_module)); |
|
265 if (!java_lang_Module::is_instance(h_to_module())) { |
|
266 return JVMTI_ERROR_INVALID_MODULE; |
|
267 } |
|
268 return JvmtiExport::add_module_exports(h_module, h_pkg, h_to_module, THREAD); |
|
269 } /* end AddModuleExports */ |
|
270 |
|
271 |
|
272 // module - pre-checked for NULL |
|
273 // pkg_name - pre-checked for NULL |
|
274 // to_module - pre-checked for NULL |
|
275 jvmtiError |
|
276 JvmtiEnv::AddModuleOpens(jobject module, const char* pkg_name, jobject to_module) { |
|
277 JavaThread* THREAD = JavaThread::current(); |
|
278 Handle h_pkg = java_lang_String::create_from_str(pkg_name, THREAD); |
|
279 |
|
280 // check module |
|
281 Handle h_module(THREAD, JNIHandles::resolve(module)); |
|
282 if (!java_lang_Module::is_instance(h_module())) { |
|
283 return JVMTI_ERROR_INVALID_MODULE; |
|
284 } |
|
285 // check to_module |
|
286 Handle h_to_module(THREAD, JNIHandles::resolve(to_module)); |
|
287 if (!java_lang_Module::is_instance(h_to_module())) { |
|
288 return JVMTI_ERROR_INVALID_MODULE; |
|
289 } |
|
290 return JvmtiExport::add_module_opens(h_module, h_pkg, h_to_module, THREAD); |
|
291 } /* end AddModuleOpens */ |
|
292 |
|
293 |
|
294 // module - pre-checked for NULL |
|
295 // service - pre-checked for NULL |
|
296 jvmtiError |
|
297 JvmtiEnv::AddModuleUses(jobject module, jclass service) { |
|
298 JavaThread* THREAD = JavaThread::current(); |
|
299 |
|
300 // check module |
|
301 Handle h_module(THREAD, JNIHandles::resolve(module)); |
|
302 if (!java_lang_Module::is_instance(h_module())) { |
|
303 return JVMTI_ERROR_INVALID_MODULE; |
|
304 } |
|
305 // check service |
|
306 Handle h_service(THREAD, JNIHandles::resolve_external_guard(service)); |
|
307 if (!java_lang_Class::is_instance(h_service()) || |
|
308 java_lang_Class::is_primitive(h_service())) { |
|
309 return JVMTI_ERROR_INVALID_CLASS; |
|
310 } |
|
311 return JvmtiExport::add_module_uses(h_module, h_service, THREAD); |
|
312 } /* end AddModuleUses */ |
|
313 |
|
314 |
|
315 // module - pre-checked for NULL |
|
316 // service - pre-checked for NULL |
|
317 // impl_class - pre-checked for NULL |
|
318 jvmtiError |
|
319 JvmtiEnv::AddModuleProvides(jobject module, jclass service, jclass impl_class) { |
|
320 JavaThread* THREAD = JavaThread::current(); |
|
321 |
|
322 // check module |
|
323 Handle h_module(THREAD, JNIHandles::resolve(module)); |
|
324 if (!java_lang_Module::is_instance(h_module())) { |
|
325 return JVMTI_ERROR_INVALID_MODULE; |
|
326 } |
|
327 // check service |
|
328 Handle h_service(THREAD, JNIHandles::resolve_external_guard(service)); |
|
329 if (!java_lang_Class::is_instance(h_service()) || |
|
330 java_lang_Class::is_primitive(h_service())) { |
|
331 return JVMTI_ERROR_INVALID_CLASS; |
|
332 } |
|
333 // check impl_class |
|
334 Handle h_impl_class(THREAD, JNIHandles::resolve_external_guard(impl_class)); |
|
335 if (!java_lang_Class::is_instance(h_impl_class()) || |
|
336 java_lang_Class::is_primitive(h_impl_class())) { |
|
337 return JVMTI_ERROR_INVALID_CLASS; |
|
338 } |
|
339 return JvmtiExport::add_module_provides(h_module, h_service, h_impl_class, THREAD); |
|
340 } /* end AddModuleProvides */ |
|
341 |
|
342 // module - pre-checked for NULL |
|
343 // is_modifiable_class_ptr - pre-checked for NULL |
|
344 jvmtiError |
|
345 JvmtiEnv::IsModifiableModule(jobject module, jboolean* is_modifiable_module_ptr) { |
|
346 JavaThread* THREAD = JavaThread::current(); |
|
347 |
|
348 // check module |
|
349 Handle h_module(THREAD, JNIHandles::resolve(module)); |
|
350 if (!java_lang_Module::is_instance(h_module())) { |
|
351 return JVMTI_ERROR_INVALID_MODULE; |
|
352 } |
|
353 |
|
354 *is_modifiable_module_ptr = JNI_TRUE; |
|
355 return JVMTI_ERROR_NONE; |
|
356 } /* end IsModifiableModule */ |
|
357 |
|
358 |
|
359 // |
|
360 // Class functions |
|
361 // |
|
362 |
|
363 // class_count_ptr - pre-checked for NULL |
|
364 // classes_ptr - pre-checked for NULL |
|
365 jvmtiError |
|
366 JvmtiEnv::GetLoadedClasses(jint* class_count_ptr, jclass** classes_ptr) { |
|
367 return JvmtiGetLoadedClasses::getLoadedClasses(this, class_count_ptr, classes_ptr); |
|
368 } /* end GetLoadedClasses */ |
|
369 |
|
370 |
|
371 // initiating_loader - NULL is a valid value, must be checked |
|
372 // class_count_ptr - pre-checked for NULL |
|
373 // classes_ptr - pre-checked for NULL |
|
374 jvmtiError |
|
375 JvmtiEnv::GetClassLoaderClasses(jobject initiating_loader, jint* class_count_ptr, jclass** classes_ptr) { |
|
376 return JvmtiGetLoadedClasses::getClassLoaderClasses(this, initiating_loader, |
|
377 class_count_ptr, classes_ptr); |
|
378 } /* end GetClassLoaderClasses */ |
|
379 |
|
380 // k_mirror - may be primitive, this must be checked |
|
381 // is_modifiable_class_ptr - pre-checked for NULL |
|
382 jvmtiError |
|
383 JvmtiEnv::IsModifiableClass(oop k_mirror, jboolean* is_modifiable_class_ptr) { |
|
384 *is_modifiable_class_ptr = VM_RedefineClasses::is_modifiable_class(k_mirror)? |
|
385 JNI_TRUE : JNI_FALSE; |
|
386 return JVMTI_ERROR_NONE; |
|
387 } /* end IsModifiableClass */ |
|
388 |
|
389 // class_count - pre-checked to be greater than or equal to 0 |
|
390 // classes - pre-checked for NULL |
|
391 jvmtiError |
|
392 JvmtiEnv::RetransformClasses(jint class_count, const jclass* classes) { |
|
393 //TODO: add locking |
|
394 |
|
395 int index; |
|
396 JavaThread* current_thread = JavaThread::current(); |
|
397 ResourceMark rm(current_thread); |
|
398 |
|
399 jvmtiClassDefinition* class_definitions = |
|
400 NEW_RESOURCE_ARRAY(jvmtiClassDefinition, class_count); |
|
401 NULL_CHECK(class_definitions, JVMTI_ERROR_OUT_OF_MEMORY); |
|
402 |
|
403 for (index = 0; index < class_count; index++) { |
|
404 HandleMark hm(current_thread); |
|
405 |
|
406 jclass jcls = classes[index]; |
|
407 oop k_mirror = JNIHandles::resolve_external_guard(jcls); |
|
408 if (k_mirror == NULL) { |
|
409 return JVMTI_ERROR_INVALID_CLASS; |
|
410 } |
|
411 if (!k_mirror->is_a(SystemDictionary::Class_klass())) { |
|
412 return JVMTI_ERROR_INVALID_CLASS; |
|
413 } |
|
414 |
|
415 if (!VM_RedefineClasses::is_modifiable_class(k_mirror)) { |
|
416 return JVMTI_ERROR_UNMODIFIABLE_CLASS; |
|
417 } |
|
418 |
|
419 Klass* klass = java_lang_Class::as_Klass(k_mirror); |
|
420 |
|
421 jint status = klass->jvmti_class_status(); |
|
422 if (status & (JVMTI_CLASS_STATUS_ERROR)) { |
|
423 return JVMTI_ERROR_INVALID_CLASS; |
|
424 } |
|
425 |
|
426 InstanceKlass* ik = InstanceKlass::cast(klass); |
|
427 if (ik->get_cached_class_file_bytes() == NULL) { |
|
428 // Not cached, we need to reconstitute the class file from the |
|
429 // VM representation. We don't attach the reconstituted class |
|
430 // bytes to the InstanceKlass here because they have not been |
|
431 // validated and we're not at a safepoint. |
|
432 JvmtiClassFileReconstituter reconstituter(ik); |
|
433 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { |
|
434 return reconstituter.get_error(); |
|
435 } |
|
436 |
|
437 class_definitions[index].class_byte_count = (jint)reconstituter.class_file_size(); |
|
438 class_definitions[index].class_bytes = (unsigned char*) |
|
439 reconstituter.class_file_bytes(); |
|
440 } else { |
|
441 // it is cached, get it from the cache |
|
442 class_definitions[index].class_byte_count = ik->get_cached_class_file_len(); |
|
443 class_definitions[index].class_bytes = ik->get_cached_class_file_bytes(); |
|
444 } |
|
445 class_definitions[index].klass = jcls; |
|
446 } |
|
447 VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_retransform); |
|
448 VMThread::execute(&op); |
|
449 return (op.check_error()); |
|
450 } /* end RetransformClasses */ |
|
451 |
|
452 |
|
453 // class_count - pre-checked to be greater than or equal to 0 |
|
454 // class_definitions - pre-checked for NULL |
|
455 jvmtiError |
|
456 JvmtiEnv::RedefineClasses(jint class_count, const jvmtiClassDefinition* class_definitions) { |
|
457 //TODO: add locking |
|
458 VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_redefine); |
|
459 VMThread::execute(&op); |
|
460 return (op.check_error()); |
|
461 } /* end RedefineClasses */ |
|
462 |
|
463 |
|
464 // |
|
465 // Object functions |
|
466 // |
|
467 |
|
468 // size_ptr - pre-checked for NULL |
|
469 jvmtiError |
|
470 JvmtiEnv::GetObjectSize(jobject object, jlong* size_ptr) { |
|
471 oop mirror = JNIHandles::resolve_external_guard(object); |
|
472 NULL_CHECK(mirror, JVMTI_ERROR_INVALID_OBJECT); |
|
473 *size_ptr = (jlong)mirror->size() * wordSize; |
|
474 return JVMTI_ERROR_NONE; |
|
475 } /* end GetObjectSize */ |
|
476 |
|
477 // |
|
478 // Method functions |
|
479 // |
|
480 |
|
481 // prefix - NULL is a valid value, must be checked |
|
482 jvmtiError |
|
483 JvmtiEnv::SetNativeMethodPrefix(const char* prefix) { |
|
484 return prefix == NULL? |
|
485 SetNativeMethodPrefixes(0, NULL) : |
|
486 SetNativeMethodPrefixes(1, (char**)&prefix); |
|
487 } /* end SetNativeMethodPrefix */ |
|
488 |
|
489 |
|
490 // prefix_count - pre-checked to be greater than or equal to 0 |
|
491 // prefixes - pre-checked for NULL |
|
492 jvmtiError |
|
493 JvmtiEnv::SetNativeMethodPrefixes(jint prefix_count, char** prefixes) { |
|
494 // Have to grab JVMTI thread state lock to be sure that some thread |
|
495 // isn't accessing the prefixes at the same time we are setting them. |
|
496 // No locks during VM bring-up. |
|
497 if (Threads::number_of_threads() == 0) { |
|
498 return set_native_method_prefixes(prefix_count, prefixes); |
|
499 } else { |
|
500 MutexLocker mu(JvmtiThreadState_lock); |
|
501 return set_native_method_prefixes(prefix_count, prefixes); |
|
502 } |
|
503 } /* end SetNativeMethodPrefixes */ |
|
504 |
|
505 // |
|
506 // Event Management functions |
|
507 // |
|
508 |
|
509 // callbacks - NULL is a valid value, must be checked |
|
510 // size_of_callbacks - pre-checked to be greater than or equal to 0 |
|
511 jvmtiError |
|
512 JvmtiEnv::SetEventCallbacks(const jvmtiEventCallbacks* callbacks, jint size_of_callbacks) { |
|
513 JvmtiEventController::set_event_callbacks(this, callbacks, size_of_callbacks); |
|
514 return JVMTI_ERROR_NONE; |
|
515 } /* end SetEventCallbacks */ |
|
516 |
|
517 |
|
518 // event_thread - NULL is a valid value, must be checked |
|
519 jvmtiError |
|
520 JvmtiEnv::SetEventNotificationMode(jvmtiEventMode mode, jvmtiEvent event_type, jthread event_thread, ...) { |
|
521 JavaThread* java_thread = NULL; |
|
522 if (event_thread != NULL) { |
|
523 oop thread_oop = JNIHandles::resolve_external_guard(event_thread); |
|
524 if (thread_oop == NULL) { |
|
525 return JVMTI_ERROR_INVALID_THREAD; |
|
526 } |
|
527 if (!thread_oop->is_a(SystemDictionary::Thread_klass())) { |
|
528 return JVMTI_ERROR_INVALID_THREAD; |
|
529 } |
|
530 java_thread = java_lang_Thread::thread(thread_oop); |
|
531 if (java_thread == NULL) { |
|
532 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
|
533 } |
|
534 } |
|
535 |
|
536 // event_type must be valid |
|
537 if (!JvmtiEventController::is_valid_event_type(event_type)) { |
|
538 return JVMTI_ERROR_INVALID_EVENT_TYPE; |
|
539 } |
|
540 |
|
541 // global events cannot be controlled at thread level. |
|
542 if (java_thread != NULL && JvmtiEventController::is_global_event(event_type)) { |
|
543 return JVMTI_ERROR_ILLEGAL_ARGUMENT; |
|
544 } |
|
545 |
|
546 bool enabled = (mode == JVMTI_ENABLE); |
|
547 |
|
548 // assure that needed capabilities are present |
|
549 if (enabled && !JvmtiUtil::has_event_capability(event_type, get_capabilities())) { |
|
550 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; |
|
551 } |
|
552 |
|
553 if (event_type == JVMTI_EVENT_CLASS_FILE_LOAD_HOOK && enabled) { |
|
554 record_class_file_load_hook_enabled(); |
|
555 } |
|
556 JvmtiEventController::set_user_enabled(this, java_thread, event_type, enabled); |
|
557 |
|
558 return JVMTI_ERROR_NONE; |
|
559 } /* end SetEventNotificationMode */ |
|
560 |
|
561 // |
|
562 // Capability functions |
|
563 // |
|
564 |
|
565 // capabilities_ptr - pre-checked for NULL |
|
566 jvmtiError |
|
567 JvmtiEnv::GetPotentialCapabilities(jvmtiCapabilities* capabilities_ptr) { |
|
568 JvmtiManageCapabilities::get_potential_capabilities(get_capabilities(), |
|
569 get_prohibited_capabilities(), |
|
570 capabilities_ptr); |
|
571 return JVMTI_ERROR_NONE; |
|
572 } /* end GetPotentialCapabilities */ |
|
573 |
|
574 |
|
575 // capabilities_ptr - pre-checked for NULL |
|
576 jvmtiError |
|
577 JvmtiEnv::AddCapabilities(const jvmtiCapabilities* capabilities_ptr) { |
|
578 return JvmtiManageCapabilities::add_capabilities(get_capabilities(), |
|
579 get_prohibited_capabilities(), |
|
580 capabilities_ptr, |
|
581 get_capabilities()); |
|
582 } /* end AddCapabilities */ |
|
583 |
|
584 |
|
585 // capabilities_ptr - pre-checked for NULL |
|
586 jvmtiError |
|
587 JvmtiEnv::RelinquishCapabilities(const jvmtiCapabilities* capabilities_ptr) { |
|
588 JvmtiManageCapabilities::relinquish_capabilities(get_capabilities(), capabilities_ptr, get_capabilities()); |
|
589 return JVMTI_ERROR_NONE; |
|
590 } /* end RelinquishCapabilities */ |
|
591 |
|
592 |
|
593 // capabilities_ptr - pre-checked for NULL |
|
594 jvmtiError |
|
595 JvmtiEnv::GetCapabilities(jvmtiCapabilities* capabilities_ptr) { |
|
596 JvmtiManageCapabilities::copy_capabilities(get_capabilities(), capabilities_ptr); |
|
597 return JVMTI_ERROR_NONE; |
|
598 } /* end GetCapabilities */ |
|
599 |
|
600 // |
|
601 // Class Loader Search functions |
|
602 // |
|
603 |
|
604 // segment - pre-checked for NULL |
|
605 jvmtiError |
|
606 JvmtiEnv::AddToBootstrapClassLoaderSearch(const char* segment) { |
|
607 jvmtiPhase phase = get_phase(); |
|
608 if (phase == JVMTI_PHASE_ONLOAD) { |
|
609 Arguments::append_sysclasspath(segment); |
|
610 return JVMTI_ERROR_NONE; |
|
611 } else if (use_version_1_0_semantics()) { |
|
612 // This JvmtiEnv requested version 1.0 semantics and this function |
|
613 // is only allowed in the ONLOAD phase in version 1.0 so we need to |
|
614 // return an error here. |
|
615 return JVMTI_ERROR_WRONG_PHASE; |
|
616 } else if (phase == JVMTI_PHASE_LIVE) { |
|
617 // The phase is checked by the wrapper that called this function, |
|
618 // but this thread could be racing with the thread that is |
|
619 // terminating the VM so we check one more time. |
|
620 |
|
621 // create the zip entry |
|
622 ClassPathZipEntry* zip_entry = ClassLoader::create_class_path_zip_entry(segment, true); |
|
623 if (zip_entry == NULL) { |
|
624 return JVMTI_ERROR_ILLEGAL_ARGUMENT; |
|
625 } |
|
626 |
|
627 // lock the loader |
|
628 Thread* thread = Thread::current(); |
|
629 HandleMark hm; |
|
630 Handle loader_lock = Handle(thread, SystemDictionary::system_loader_lock()); |
|
631 |
|
632 ObjectLocker ol(loader_lock, thread); |
|
633 |
|
634 // add the jar file to the bootclasspath |
|
635 log_info(class, load)("opened: %s", zip_entry->name()); |
|
636 ClassLoaderExt::append_boot_classpath(zip_entry); |
|
637 return JVMTI_ERROR_NONE; |
|
638 } else { |
|
639 return JVMTI_ERROR_WRONG_PHASE; |
|
640 } |
|
641 |
|
642 } /* end AddToBootstrapClassLoaderSearch */ |
|
643 |
|
644 |
|
645 // segment - pre-checked for NULL |
|
646 jvmtiError |
|
647 JvmtiEnv::AddToSystemClassLoaderSearch(const char* segment) { |
|
648 jvmtiPhase phase = get_phase(); |
|
649 |
|
650 if (phase == JVMTI_PHASE_ONLOAD) { |
|
651 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { |
|
652 if (strcmp("java.class.path", p->key()) == 0) { |
|
653 p->append_value(segment); |
|
654 break; |
|
655 } |
|
656 } |
|
657 return JVMTI_ERROR_NONE; |
|
658 } else if (phase == JVMTI_PHASE_LIVE) { |
|
659 // The phase is checked by the wrapper that called this function, |
|
660 // but this thread could be racing with the thread that is |
|
661 // terminating the VM so we check one more time. |
|
662 HandleMark hm; |
|
663 |
|
664 // create the zip entry (which will open the zip file and hence |
|
665 // check that the segment is indeed a zip file). |
|
666 ClassPathZipEntry* zip_entry = ClassLoader::create_class_path_zip_entry(segment, false); |
|
667 if (zip_entry == NULL) { |
|
668 return JVMTI_ERROR_ILLEGAL_ARGUMENT; |
|
669 } |
|
670 delete zip_entry; // no longer needed |
|
671 |
|
672 // lock the loader |
|
673 Thread* THREAD = Thread::current(); |
|
674 Handle loader = Handle(THREAD, SystemDictionary::java_system_loader()); |
|
675 |
|
676 ObjectLocker ol(loader, THREAD); |
|
677 |
|
678 // need the path as java.lang.String |
|
679 Handle path = java_lang_String::create_from_platform_dependent_str(segment, THREAD); |
|
680 if (HAS_PENDING_EXCEPTION) { |
|
681 CLEAR_PENDING_EXCEPTION; |
|
682 return JVMTI_ERROR_INTERNAL; |
|
683 } |
|
684 |
|
685 // Invoke the appendToClassPathForInstrumentation method - if the method |
|
686 // is not found it means the loader doesn't support adding to the class path |
|
687 // in the live phase. |
|
688 { |
|
689 JavaValue res(T_VOID); |
|
690 JavaCalls::call_special(&res, |
|
691 loader, |
|
692 loader->klass(), |
|
693 vmSymbols::appendToClassPathForInstrumentation_name(), |
|
694 vmSymbols::appendToClassPathForInstrumentation_signature(), |
|
695 path, |
|
696 THREAD); |
|
697 if (HAS_PENDING_EXCEPTION) { |
|
698 Symbol* ex_name = PENDING_EXCEPTION->klass()->name(); |
|
699 CLEAR_PENDING_EXCEPTION; |
|
700 |
|
701 if (ex_name == vmSymbols::java_lang_NoSuchMethodError()) { |
|
702 return JVMTI_ERROR_CLASS_LOADER_UNSUPPORTED; |
|
703 } else { |
|
704 return JVMTI_ERROR_INTERNAL; |
|
705 } |
|
706 } |
|
707 } |
|
708 |
|
709 return JVMTI_ERROR_NONE; |
|
710 } else { |
|
711 return JVMTI_ERROR_WRONG_PHASE; |
|
712 } |
|
713 } /* end AddToSystemClassLoaderSearch */ |
|
714 |
|
715 // |
|
716 // General functions |
|
717 // |
|
718 |
|
719 // phase_ptr - pre-checked for NULL |
|
720 jvmtiError |
|
721 JvmtiEnv::GetPhase(jvmtiPhase* phase_ptr) { |
|
722 *phase_ptr = phase(); |
|
723 return JVMTI_ERROR_NONE; |
|
724 } /* end GetPhase */ |
|
725 |
|
726 |
|
727 jvmtiError |
|
728 JvmtiEnv::DisposeEnvironment() { |
|
729 dispose(); |
|
730 return JVMTI_ERROR_NONE; |
|
731 } /* end DisposeEnvironment */ |
|
732 |
|
733 |
|
734 // data - NULL is a valid value, must be checked |
|
735 jvmtiError |
|
736 JvmtiEnv::SetEnvironmentLocalStorage(const void* data) { |
|
737 set_env_local_storage(data); |
|
738 return JVMTI_ERROR_NONE; |
|
739 } /* end SetEnvironmentLocalStorage */ |
|
740 |
|
741 |
|
742 // data_ptr - pre-checked for NULL |
|
743 jvmtiError |
|
744 JvmtiEnv::GetEnvironmentLocalStorage(void** data_ptr) { |
|
745 *data_ptr = (void*)get_env_local_storage(); |
|
746 return JVMTI_ERROR_NONE; |
|
747 } /* end GetEnvironmentLocalStorage */ |
|
748 |
|
749 // version_ptr - pre-checked for NULL |
|
750 jvmtiError |
|
751 JvmtiEnv::GetVersionNumber(jint* version_ptr) { |
|
752 *version_ptr = JVMTI_VERSION; |
|
753 return JVMTI_ERROR_NONE; |
|
754 } /* end GetVersionNumber */ |
|
755 |
|
756 |
|
757 // name_ptr - pre-checked for NULL |
|
758 jvmtiError |
|
759 JvmtiEnv::GetErrorName(jvmtiError error, char** name_ptr) { |
|
760 if (error < JVMTI_ERROR_NONE || error > JVMTI_ERROR_MAX) { |
|
761 return JVMTI_ERROR_ILLEGAL_ARGUMENT; |
|
762 } |
|
763 const char *name = JvmtiUtil::error_name(error); |
|
764 if (name == NULL) { |
|
765 return JVMTI_ERROR_ILLEGAL_ARGUMENT; |
|
766 } |
|
767 size_t len = strlen(name) + 1; |
|
768 jvmtiError err = allocate(len, (unsigned char**)name_ptr); |
|
769 if (err == JVMTI_ERROR_NONE) { |
|
770 memcpy(*name_ptr, name, len); |
|
771 } |
|
772 return err; |
|
773 } /* end GetErrorName */ |
|
774 |
|
775 |
|
776 jvmtiError |
|
777 JvmtiEnv::SetVerboseFlag(jvmtiVerboseFlag flag, jboolean value) { |
|
778 LogLevelType level = value == 0 ? LogLevel::Off : LogLevel::Info; |
|
779 switch (flag) { |
|
780 case JVMTI_VERBOSE_OTHER: |
|
781 // ignore |
|
782 break; |
|
783 case JVMTI_VERBOSE_CLASS: |
|
784 LogConfiguration::configure_stdout(level, false, LOG_TAGS(class, unload)); |
|
785 LogConfiguration::configure_stdout(level, false, LOG_TAGS(class, load)); |
|
786 break; |
|
787 case JVMTI_VERBOSE_GC: |
|
788 if (value == 0) { |
|
789 LogConfiguration::configure_stdout(LogLevel::Off, true, LOG_TAGS(gc)); |
|
790 } else { |
|
791 LogConfiguration::configure_stdout(LogLevel::Info, true, LOG_TAGS(gc)); |
|
792 } |
|
793 break; |
|
794 case JVMTI_VERBOSE_JNI: |
|
795 PrintJNIResolving = value != 0; |
|
796 break; |
|
797 default: |
|
798 return JVMTI_ERROR_ILLEGAL_ARGUMENT; |
|
799 }; |
|
800 return JVMTI_ERROR_NONE; |
|
801 } /* end SetVerboseFlag */ |
|
802 |
|
803 |
|
804 // format_ptr - pre-checked for NULL |
|
805 jvmtiError |
|
806 JvmtiEnv::GetJLocationFormat(jvmtiJlocationFormat* format_ptr) { |
|
807 *format_ptr = JVMTI_JLOCATION_JVMBCI; |
|
808 return JVMTI_ERROR_NONE; |
|
809 } /* end GetJLocationFormat */ |
|
810 |
|
811 // |
|
812 // Thread functions |
|
813 // |
|
814 |
|
815 // Threads_lock NOT held |
|
816 // thread - NOT pre-checked |
|
817 // thread_state_ptr - pre-checked for NULL |
|
818 jvmtiError |
|
819 JvmtiEnv::GetThreadState(jthread thread, jint* thread_state_ptr) { |
|
820 jint state; |
|
821 oop thread_oop; |
|
822 JavaThread* thr; |
|
823 |
|
824 if (thread == NULL) { |
|
825 thread_oop = JavaThread::current()->threadObj(); |
|
826 } else { |
|
827 thread_oop = JNIHandles::resolve_external_guard(thread); |
|
828 } |
|
829 |
|
830 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) { |
|
831 return JVMTI_ERROR_INVALID_THREAD; |
|
832 } |
|
833 |
|
834 // get most state bits |
|
835 state = (jint)java_lang_Thread::get_thread_status(thread_oop); |
|
836 |
|
837 // add more state bits |
|
838 thr = java_lang_Thread::thread(thread_oop); |
|
839 if (thr != NULL) { |
|
840 JavaThreadState jts = thr->thread_state(); |
|
841 |
|
842 if (thr->is_being_ext_suspended()) { |
|
843 state |= JVMTI_THREAD_STATE_SUSPENDED; |
|
844 } |
|
845 if (jts == _thread_in_native) { |
|
846 state |= JVMTI_THREAD_STATE_IN_NATIVE; |
|
847 } |
|
848 OSThread* osThread = thr->osthread(); |
|
849 if (osThread != NULL && osThread->interrupted()) { |
|
850 state |= JVMTI_THREAD_STATE_INTERRUPTED; |
|
851 } |
|
852 } |
|
853 |
|
854 *thread_state_ptr = state; |
|
855 return JVMTI_ERROR_NONE; |
|
856 } /* end GetThreadState */ |
|
857 |
|
858 |
|
859 // thread_ptr - pre-checked for NULL |
|
860 jvmtiError |
|
861 JvmtiEnv::GetCurrentThread(jthread* thread_ptr) { |
|
862 JavaThread* current_thread = JavaThread::current(); |
|
863 *thread_ptr = (jthread)JNIHandles::make_local(current_thread, current_thread->threadObj()); |
|
864 return JVMTI_ERROR_NONE; |
|
865 } /* end GetCurrentThread */ |
|
866 |
|
867 |
|
868 // threads_count_ptr - pre-checked for NULL |
|
869 // threads_ptr - pre-checked for NULL |
|
870 jvmtiError |
|
871 JvmtiEnv::GetAllThreads(jint* threads_count_ptr, jthread** threads_ptr) { |
|
872 int nthreads = 0; |
|
873 Handle *thread_objs = NULL; |
|
874 ResourceMark rm; |
|
875 HandleMark hm; |
|
876 |
|
877 // enumerate threads (including agent threads) |
|
878 ThreadsListEnumerator tle(Thread::current(), true); |
|
879 nthreads = tle.num_threads(); |
|
880 *threads_count_ptr = nthreads; |
|
881 |
|
882 if (nthreads == 0) { |
|
883 *threads_ptr = NULL; |
|
884 return JVMTI_ERROR_NONE; |
|
885 } |
|
886 |
|
887 thread_objs = NEW_RESOURCE_ARRAY(Handle, nthreads); |
|
888 NULL_CHECK(thread_objs, JVMTI_ERROR_OUT_OF_MEMORY); |
|
889 |
|
890 for (int i=0; i < nthreads; i++) { |
|
891 thread_objs[i] = Handle(tle.get_threadObj(i)); |
|
892 } |
|
893 |
|
894 // have to make global handles outside of Threads_lock |
|
895 jthread *jthreads = new_jthreadArray(nthreads, thread_objs); |
|
896 NULL_CHECK(jthreads, JVMTI_ERROR_OUT_OF_MEMORY); |
|
897 |
|
898 *threads_ptr = jthreads; |
|
899 return JVMTI_ERROR_NONE; |
|
900 } /* end GetAllThreads */ |
|
901 |
|
902 |
|
903 // Threads_lock NOT held, java_thread not protected by lock |
|
904 // java_thread - pre-checked |
|
905 jvmtiError |
|
906 JvmtiEnv::SuspendThread(JavaThread* java_thread) { |
|
907 // don't allow hidden thread suspend request. |
|
908 if (java_thread->is_hidden_from_external_view()) { |
|
909 return (JVMTI_ERROR_NONE); |
|
910 } |
|
911 |
|
912 { |
|
913 MutexLockerEx ml(java_thread->SR_lock(), Mutex::_no_safepoint_check_flag); |
|
914 if (java_thread->is_external_suspend()) { |
|
915 // don't allow nested external suspend requests. |
|
916 return (JVMTI_ERROR_THREAD_SUSPENDED); |
|
917 } |
|
918 if (java_thread->is_exiting()) { // thread is in the process of exiting |
|
919 return (JVMTI_ERROR_THREAD_NOT_ALIVE); |
|
920 } |
|
921 java_thread->set_external_suspend(); |
|
922 } |
|
923 |
|
924 if (!JvmtiSuspendControl::suspend(java_thread)) { |
|
925 // the thread was in the process of exiting |
|
926 return (JVMTI_ERROR_THREAD_NOT_ALIVE); |
|
927 } |
|
928 return JVMTI_ERROR_NONE; |
|
929 } /* end SuspendThread */ |
|
930 |
|
931 |
|
932 // request_count - pre-checked to be greater than or equal to 0 |
|
933 // request_list - pre-checked for NULL |
|
934 // results - pre-checked for NULL |
|
935 jvmtiError |
|
936 JvmtiEnv::SuspendThreadList(jint request_count, const jthread* request_list, jvmtiError* results) { |
|
937 int needSafepoint = 0; // > 0 if we need a safepoint |
|
938 for (int i = 0; i < request_count; i++) { |
|
939 JavaThread *java_thread = get_JavaThread(request_list[i]); |
|
940 if (java_thread == NULL) { |
|
941 results[i] = JVMTI_ERROR_INVALID_THREAD; |
|
942 continue; |
|
943 } |
|
944 // the thread has not yet run or has exited (not on threads list) |
|
945 if (java_thread->threadObj() == NULL) { |
|
946 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; |
|
947 continue; |
|
948 } |
|
949 if (java_lang_Thread::thread(java_thread->threadObj()) == NULL) { |
|
950 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; |
|
951 continue; |
|
952 } |
|
953 // don't allow hidden thread suspend request. |
|
954 if (java_thread->is_hidden_from_external_view()) { |
|
955 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend |
|
956 continue; |
|
957 } |
|
958 |
|
959 { |
|
960 MutexLockerEx ml(java_thread->SR_lock(), Mutex::_no_safepoint_check_flag); |
|
961 if (java_thread->is_external_suspend()) { |
|
962 // don't allow nested external suspend requests. |
|
963 results[i] = JVMTI_ERROR_THREAD_SUSPENDED; |
|
964 continue; |
|
965 } |
|
966 if (java_thread->is_exiting()) { // thread is in the process of exiting |
|
967 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; |
|
968 continue; |
|
969 } |
|
970 java_thread->set_external_suspend(); |
|
971 } |
|
972 if (java_thread->thread_state() == _thread_in_native) { |
|
973 // We need to try and suspend native threads here. Threads in |
|
974 // other states will self-suspend on their next transition. |
|
975 if (!JvmtiSuspendControl::suspend(java_thread)) { |
|
976 // The thread was in the process of exiting. Force another |
|
977 // safepoint to make sure that this thread transitions. |
|
978 needSafepoint++; |
|
979 results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE; |
|
980 continue; |
|
981 } |
|
982 } else { |
|
983 needSafepoint++; |
|
984 } |
|
985 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend |
|
986 } |
|
987 if (needSafepoint > 0) { |
|
988 VM_ThreadsSuspendJVMTI tsj; |
|
989 VMThread::execute(&tsj); |
|
990 } |
|
991 // per-thread suspend results returned via results parameter |
|
992 return JVMTI_ERROR_NONE; |
|
993 } /* end SuspendThreadList */ |
|
994 |
|
995 |
|
996 // Threads_lock NOT held, java_thread not protected by lock |
|
997 // java_thread - pre-checked |
|
998 jvmtiError |
|
999 JvmtiEnv::ResumeThread(JavaThread* java_thread) { |
|
1000 // don't allow hidden thread resume request. |
|
1001 if (java_thread->is_hidden_from_external_view()) { |
|
1002 return JVMTI_ERROR_NONE; |
|
1003 } |
|
1004 |
|
1005 if (!java_thread->is_being_ext_suspended()) { |
|
1006 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; |
|
1007 } |
|
1008 |
|
1009 if (!JvmtiSuspendControl::resume(java_thread)) { |
|
1010 return JVMTI_ERROR_INTERNAL; |
|
1011 } |
|
1012 return JVMTI_ERROR_NONE; |
|
1013 } /* end ResumeThread */ |
|
1014 |
|
1015 |
|
1016 // request_count - pre-checked to be greater than or equal to 0 |
|
1017 // request_list - pre-checked for NULL |
|
1018 // results - pre-checked for NULL |
|
1019 jvmtiError |
|
1020 JvmtiEnv::ResumeThreadList(jint request_count, const jthread* request_list, jvmtiError* results) { |
|
1021 for (int i = 0; i < request_count; i++) { |
|
1022 JavaThread *java_thread = get_JavaThread(request_list[i]); |
|
1023 if (java_thread == NULL) { |
|
1024 results[i] = JVMTI_ERROR_INVALID_THREAD; |
|
1025 continue; |
|
1026 } |
|
1027 // don't allow hidden thread resume request. |
|
1028 if (java_thread->is_hidden_from_external_view()) { |
|
1029 results[i] = JVMTI_ERROR_NONE; // indicate successful resume |
|
1030 continue; |
|
1031 } |
|
1032 if (!java_thread->is_being_ext_suspended()) { |
|
1033 results[i] = JVMTI_ERROR_THREAD_NOT_SUSPENDED; |
|
1034 continue; |
|
1035 } |
|
1036 |
|
1037 if (!JvmtiSuspendControl::resume(java_thread)) { |
|
1038 results[i] = JVMTI_ERROR_INTERNAL; |
|
1039 continue; |
|
1040 } |
|
1041 |
|
1042 results[i] = JVMTI_ERROR_NONE; // indicate successful suspend |
|
1043 } |
|
1044 // per-thread resume results returned via results parameter |
|
1045 return JVMTI_ERROR_NONE; |
|
1046 } /* end ResumeThreadList */ |
|
1047 |
|
1048 |
|
1049 // Threads_lock NOT held, java_thread not protected by lock |
|
1050 // java_thread - pre-checked |
|
1051 jvmtiError |
|
1052 JvmtiEnv::StopThread(JavaThread* java_thread, jobject exception) { |
|
1053 oop e = JNIHandles::resolve_external_guard(exception); |
|
1054 NULL_CHECK(e, JVMTI_ERROR_NULL_POINTER); |
|
1055 |
|
1056 JavaThread::send_async_exception(java_thread->threadObj(), e); |
|
1057 |
|
1058 return JVMTI_ERROR_NONE; |
|
1059 |
|
1060 } /* end StopThread */ |
|
1061 |
|
1062 |
|
1063 // Threads_lock NOT held |
|
1064 // thread - NOT pre-checked |
|
1065 jvmtiError |
|
1066 JvmtiEnv::InterruptThread(jthread thread) { |
|
1067 oop thread_oop = JNIHandles::resolve_external_guard(thread); |
|
1068 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) |
|
1069 return JVMTI_ERROR_INVALID_THREAD; |
|
1070 |
|
1071 JavaThread* current_thread = JavaThread::current(); |
|
1072 |
|
1073 // Todo: this is a duplicate of JVM_Interrupt; share code in future |
|
1074 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate |
|
1075 MutexLockerEx ml(current_thread->threadObj() == thread_oop ? NULL : Threads_lock); |
|
1076 // We need to re-resolve the java_thread, since a GC might have happened during the |
|
1077 // acquire of the lock |
|
1078 |
|
1079 JavaThread* java_thread = java_lang_Thread::thread(JNIHandles::resolve_external_guard(thread)); |
|
1080 NULL_CHECK(java_thread, JVMTI_ERROR_THREAD_NOT_ALIVE); |
|
1081 |
|
1082 Thread::interrupt(java_thread); |
|
1083 |
|
1084 return JVMTI_ERROR_NONE; |
|
1085 } /* end InterruptThread */ |
|
1086 |
|
1087 |
|
1088 // Threads_lock NOT held |
|
1089 // thread - NOT pre-checked |
|
1090 // info_ptr - pre-checked for NULL |
|
1091 jvmtiError |
|
1092 JvmtiEnv::GetThreadInfo(jthread thread, jvmtiThreadInfo* info_ptr) { |
|
1093 ResourceMark rm; |
|
1094 HandleMark hm; |
|
1095 |
|
1096 JavaThread* current_thread = JavaThread::current(); |
|
1097 |
|
1098 // if thread is NULL the current thread is used |
|
1099 oop thread_oop; |
|
1100 if (thread == NULL) { |
|
1101 thread_oop = current_thread->threadObj(); |
|
1102 } else { |
|
1103 thread_oop = JNIHandles::resolve_external_guard(thread); |
|
1104 } |
|
1105 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) |
|
1106 return JVMTI_ERROR_INVALID_THREAD; |
|
1107 |
|
1108 Handle thread_obj(current_thread, thread_oop); |
|
1109 Handle name; |
|
1110 ThreadPriority priority; |
|
1111 Handle thread_group; |
|
1112 Handle context_class_loader; |
|
1113 bool is_daemon; |
|
1114 |
|
1115 { MutexLocker mu(Threads_lock); |
|
1116 |
|
1117 name = Handle(current_thread, java_lang_Thread::name(thread_obj())); |
|
1118 priority = java_lang_Thread::priority(thread_obj()); |
|
1119 thread_group = Handle(current_thread, java_lang_Thread::threadGroup(thread_obj())); |
|
1120 is_daemon = java_lang_Thread::is_daemon(thread_obj()); |
|
1121 |
|
1122 oop loader = java_lang_Thread::context_class_loader(thread_obj()); |
|
1123 context_class_loader = Handle(current_thread, loader); |
|
1124 } |
|
1125 { const char *n; |
|
1126 |
|
1127 if (name() != NULL) { |
|
1128 n = java_lang_String::as_utf8_string(name()); |
|
1129 } else { |
|
1130 int utf8_length = 0; |
|
1131 n = UNICODE::as_utf8((jchar*) NULL, utf8_length); |
|
1132 } |
|
1133 |
|
1134 info_ptr->name = (char *) jvmtiMalloc(strlen(n)+1); |
|
1135 if (info_ptr->name == NULL) |
|
1136 return JVMTI_ERROR_OUT_OF_MEMORY; |
|
1137 |
|
1138 strcpy(info_ptr->name, n); |
|
1139 } |
|
1140 info_ptr->is_daemon = is_daemon; |
|
1141 info_ptr->priority = priority; |
|
1142 |
|
1143 info_ptr->context_class_loader = (context_class_loader.is_null()) ? NULL : |
|
1144 jni_reference(context_class_loader); |
|
1145 info_ptr->thread_group = jni_reference(thread_group); |
|
1146 |
|
1147 return JVMTI_ERROR_NONE; |
|
1148 } /* end GetThreadInfo */ |
|
1149 |
|
1150 |
|
1151 // Threads_lock NOT held, java_thread not protected by lock |
|
1152 // java_thread - pre-checked |
|
1153 // owned_monitor_count_ptr - pre-checked for NULL |
|
1154 // owned_monitors_ptr - pre-checked for NULL |
|
1155 jvmtiError |
|
1156 JvmtiEnv::GetOwnedMonitorInfo(JavaThread* java_thread, jint* owned_monitor_count_ptr, jobject** owned_monitors_ptr) { |
|
1157 jvmtiError err = JVMTI_ERROR_NONE; |
|
1158 JavaThread* calling_thread = JavaThread::current(); |
|
1159 |
|
1160 // growable array of jvmti monitors info on the C-heap |
|
1161 GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list = |
|
1162 new (ResourceObj::C_HEAP, mtInternal) GrowableArray<jvmtiMonitorStackDepthInfo*>(1, true); |
|
1163 |
|
1164 // It is only safe to perform the direct operation on the current |
|
1165 // thread. All other usage needs to use a vm-safepoint-op for safety. |
|
1166 if (java_thread == calling_thread) { |
|
1167 err = get_owned_monitors(calling_thread, java_thread, owned_monitors_list); |
|
1168 } else { |
|
1169 // JVMTI get monitors info at safepoint. Do not require target thread to |
|
1170 // be suspended. |
|
1171 VM_GetOwnedMonitorInfo op(this, calling_thread, java_thread, owned_monitors_list); |
|
1172 VMThread::execute(&op); |
|
1173 err = op.result(); |
|
1174 } |
|
1175 jint owned_monitor_count = owned_monitors_list->length(); |
|
1176 if (err == JVMTI_ERROR_NONE) { |
|
1177 if ((err = allocate(owned_monitor_count * sizeof(jobject *), |
|
1178 (unsigned char**)owned_monitors_ptr)) == JVMTI_ERROR_NONE) { |
|
1179 // copy into the returned array |
|
1180 for (int i = 0; i < owned_monitor_count; i++) { |
|
1181 (*owned_monitors_ptr)[i] = |
|
1182 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->monitor; |
|
1183 } |
|
1184 *owned_monitor_count_ptr = owned_monitor_count; |
|
1185 } |
|
1186 } |
|
1187 // clean up. |
|
1188 for (int i = 0; i < owned_monitor_count; i++) { |
|
1189 deallocate((unsigned char*)owned_monitors_list->at(i)); |
|
1190 } |
|
1191 delete owned_monitors_list; |
|
1192 |
|
1193 return err; |
|
1194 } /* end GetOwnedMonitorInfo */ |
|
1195 |
|
1196 |
|
1197 // Threads_lock NOT held, java_thread not protected by lock |
|
1198 // java_thread - pre-checked |
|
1199 // monitor_info_count_ptr - pre-checked for NULL |
|
1200 // monitor_info_ptr - pre-checked for NULL |
|
1201 jvmtiError |
|
1202 JvmtiEnv::GetOwnedMonitorStackDepthInfo(JavaThread* java_thread, jint* monitor_info_count_ptr, jvmtiMonitorStackDepthInfo** monitor_info_ptr) { |
|
1203 jvmtiError err = JVMTI_ERROR_NONE; |
|
1204 JavaThread* calling_thread = JavaThread::current(); |
|
1205 |
|
1206 // growable array of jvmti monitors info on the C-heap |
|
1207 GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list = |
|
1208 new (ResourceObj::C_HEAP, mtInternal) GrowableArray<jvmtiMonitorStackDepthInfo*>(1, true); |
|
1209 |
|
1210 // It is only safe to perform the direct operation on the current |
|
1211 // thread. All other usage needs to use a vm-safepoint-op for safety. |
|
1212 if (java_thread == calling_thread) { |
|
1213 err = get_owned_monitors(calling_thread, java_thread, owned_monitors_list); |
|
1214 } else { |
|
1215 // JVMTI get owned monitors info at safepoint. Do not require target thread to |
|
1216 // be suspended. |
|
1217 VM_GetOwnedMonitorInfo op(this, calling_thread, java_thread, owned_monitors_list); |
|
1218 VMThread::execute(&op); |
|
1219 err = op.result(); |
|
1220 } |
|
1221 |
|
1222 jint owned_monitor_count = owned_monitors_list->length(); |
|
1223 if (err == JVMTI_ERROR_NONE) { |
|
1224 if ((err = allocate(owned_monitor_count * sizeof(jvmtiMonitorStackDepthInfo), |
|
1225 (unsigned char**)monitor_info_ptr)) == JVMTI_ERROR_NONE) { |
|
1226 // copy to output array. |
|
1227 for (int i = 0; i < owned_monitor_count; i++) { |
|
1228 (*monitor_info_ptr)[i].monitor = |
|
1229 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->monitor; |
|
1230 (*monitor_info_ptr)[i].stack_depth = |
|
1231 ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->stack_depth; |
|
1232 } |
|
1233 } |
|
1234 *monitor_info_count_ptr = owned_monitor_count; |
|
1235 } |
|
1236 |
|
1237 // clean up. |
|
1238 for (int i = 0; i < owned_monitor_count; i++) { |
|
1239 deallocate((unsigned char*)owned_monitors_list->at(i)); |
|
1240 } |
|
1241 delete owned_monitors_list; |
|
1242 |
|
1243 return err; |
|
1244 } /* end GetOwnedMonitorStackDepthInfo */ |
|
1245 |
|
1246 |
|
1247 // Threads_lock NOT held, java_thread not protected by lock |
|
1248 // java_thread - pre-checked |
|
1249 // monitor_ptr - pre-checked for NULL |
|
1250 jvmtiError |
|
1251 JvmtiEnv::GetCurrentContendedMonitor(JavaThread* java_thread, jobject* monitor_ptr) { |
|
1252 jvmtiError err = JVMTI_ERROR_NONE; |
|
1253 JavaThread* calling_thread = JavaThread::current(); |
|
1254 |
|
1255 // It is only safe to perform the direct operation on the current |
|
1256 // thread. All other usage needs to use a vm-safepoint-op for safety. |
|
1257 if (java_thread == calling_thread) { |
|
1258 err = get_current_contended_monitor(calling_thread, java_thread, monitor_ptr); |
|
1259 } else { |
|
1260 // get contended monitor information at safepoint. |
|
1261 VM_GetCurrentContendedMonitor op(this, calling_thread, java_thread, monitor_ptr); |
|
1262 VMThread::execute(&op); |
|
1263 err = op.result(); |
|
1264 } |
|
1265 return err; |
|
1266 } /* end GetCurrentContendedMonitor */ |
|
1267 |
|
1268 |
|
1269 // Threads_lock NOT held |
|
1270 // thread - NOT pre-checked |
|
1271 // proc - pre-checked for NULL |
|
1272 // arg - NULL is a valid value, must be checked |
|
1273 jvmtiError |
|
1274 JvmtiEnv::RunAgentThread(jthread thread, jvmtiStartFunction proc, const void* arg, jint priority) { |
|
1275 oop thread_oop = JNIHandles::resolve_external_guard(thread); |
|
1276 if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) { |
|
1277 return JVMTI_ERROR_INVALID_THREAD; |
|
1278 } |
|
1279 if (priority < JVMTI_THREAD_MIN_PRIORITY || priority > JVMTI_THREAD_MAX_PRIORITY) { |
|
1280 return JVMTI_ERROR_INVALID_PRIORITY; |
|
1281 } |
|
1282 |
|
1283 //Thread-self |
|
1284 JavaThread* current_thread = JavaThread::current(); |
|
1285 |
|
1286 Handle thread_hndl(current_thread, thread_oop); |
|
1287 { |
|
1288 MutexLocker mu(Threads_lock); // grab Threads_lock |
|
1289 |
|
1290 JvmtiAgentThread *new_thread = new JvmtiAgentThread(this, proc, arg); |
|
1291 |
|
1292 // At this point it may be possible that no osthread was created for the |
|
1293 // JavaThread due to lack of memory. |
|
1294 if (new_thread == NULL || new_thread->osthread() == NULL) { |
|
1295 if (new_thread) delete new_thread; |
|
1296 return JVMTI_ERROR_OUT_OF_MEMORY; |
|
1297 } |
|
1298 |
|
1299 java_lang_Thread::set_thread(thread_hndl(), new_thread); |
|
1300 java_lang_Thread::set_priority(thread_hndl(), (ThreadPriority)priority); |
|
1301 java_lang_Thread::set_daemon(thread_hndl()); |
|
1302 |
|
1303 new_thread->set_threadObj(thread_hndl()); |
|
1304 Threads::add(new_thread); |
|
1305 Thread::start(new_thread); |
|
1306 } // unlock Threads_lock |
|
1307 |
|
1308 return JVMTI_ERROR_NONE; |
|
1309 } /* end RunAgentThread */ |
|
1310 |
|
1311 // |
|
1312 // Thread Group functions |
|
1313 // |
|
1314 |
|
1315 // group_count_ptr - pre-checked for NULL |
|
1316 // groups_ptr - pre-checked for NULL |
|
1317 jvmtiError |
|
1318 JvmtiEnv::GetTopThreadGroups(jint* group_count_ptr, jthreadGroup** groups_ptr) { |
|
1319 JavaThread* current_thread = JavaThread::current(); |
|
1320 |
|
1321 // Only one top level thread group now. |
|
1322 *group_count_ptr = 1; |
|
1323 |
|
1324 // Allocate memory to store global-refs to the thread groups. |
|
1325 // Assume this area is freed by caller. |
|
1326 *groups_ptr = (jthreadGroup *) jvmtiMalloc((sizeof(jthreadGroup)) * (*group_count_ptr)); |
|
1327 |
|
1328 NULL_CHECK(*groups_ptr, JVMTI_ERROR_OUT_OF_MEMORY); |
|
1329 |
|
1330 // Convert oop to Handle, then convert Handle to global-ref. |
|
1331 { |
|
1332 HandleMark hm(current_thread); |
|
1333 Handle system_thread_group(current_thread, Universe::system_thread_group()); |
|
1334 *groups_ptr[0] = jni_reference(system_thread_group); |
|
1335 } |
|
1336 |
|
1337 return JVMTI_ERROR_NONE; |
|
1338 } /* end GetTopThreadGroups */ |
|
1339 |
|
1340 |
|
1341 // info_ptr - pre-checked for NULL |
|
1342 jvmtiError |
|
1343 JvmtiEnv::GetThreadGroupInfo(jthreadGroup group, jvmtiThreadGroupInfo* info_ptr) { |
|
1344 ResourceMark rm; |
|
1345 HandleMark hm; |
|
1346 |
|
1347 JavaThread* current_thread = JavaThread::current(); |
|
1348 |
|
1349 Handle group_obj (current_thread, JNIHandles::resolve_external_guard(group)); |
|
1350 NULL_CHECK(group_obj(), JVMTI_ERROR_INVALID_THREAD_GROUP); |
|
1351 |
|
1352 const char* name; |
|
1353 Handle parent_group; |
|
1354 bool is_daemon; |
|
1355 ThreadPriority max_priority; |
|
1356 |
|
1357 { MutexLocker mu(Threads_lock); |
|
1358 |
|
1359 name = java_lang_ThreadGroup::name(group_obj()); |
|
1360 parent_group = Handle(current_thread, java_lang_ThreadGroup::parent(group_obj())); |
|
1361 is_daemon = java_lang_ThreadGroup::is_daemon(group_obj()); |
|
1362 max_priority = java_lang_ThreadGroup::maxPriority(group_obj()); |
|
1363 } |
|
1364 |
|
1365 info_ptr->is_daemon = is_daemon; |
|
1366 info_ptr->max_priority = max_priority; |
|
1367 info_ptr->parent = jni_reference(parent_group); |
|
1368 |
|
1369 if (name != NULL) { |
|
1370 info_ptr->name = (char*)jvmtiMalloc(strlen(name)+1); |
|
1371 NULL_CHECK(info_ptr->name, JVMTI_ERROR_OUT_OF_MEMORY); |
|
1372 strcpy(info_ptr->name, name); |
|
1373 } else { |
|
1374 info_ptr->name = NULL; |
|
1375 } |
|
1376 |
|
1377 return JVMTI_ERROR_NONE; |
|
1378 } /* end GetThreadGroupInfo */ |
|
1379 |
|
1380 |
|
1381 // thread_count_ptr - pre-checked for NULL |
|
1382 // threads_ptr - pre-checked for NULL |
|
1383 // group_count_ptr - pre-checked for NULL |
|
1384 // groups_ptr - pre-checked for NULL |
|
1385 jvmtiError |
|
1386 JvmtiEnv::GetThreadGroupChildren(jthreadGroup group, jint* thread_count_ptr, jthread** threads_ptr, jint* group_count_ptr, jthreadGroup** groups_ptr) { |
|
1387 JavaThread* current_thread = JavaThread::current(); |
|
1388 oop group_obj = (oop) JNIHandles::resolve_external_guard(group); |
|
1389 NULL_CHECK(group_obj, JVMTI_ERROR_INVALID_THREAD_GROUP); |
|
1390 |
|
1391 Handle *thread_objs = NULL; |
|
1392 Handle *group_objs = NULL; |
|
1393 int nthreads = 0; |
|
1394 int ngroups = 0; |
|
1395 int hidden_threads = 0; |
|
1396 |
|
1397 ResourceMark rm; |
|
1398 HandleMark hm; |
|
1399 |
|
1400 Handle group_hdl(current_thread, group_obj); |
|
1401 |
|
1402 { MutexLocker mu(Threads_lock); |
|
1403 |
|
1404 nthreads = java_lang_ThreadGroup::nthreads(group_hdl()); |
|
1405 ngroups = java_lang_ThreadGroup::ngroups(group_hdl()); |
|
1406 |
|
1407 if (nthreads > 0) { |
|
1408 objArrayOop threads = java_lang_ThreadGroup::threads(group_hdl()); |
|
1409 assert(nthreads <= threads->length(), "too many threads"); |
|
1410 thread_objs = NEW_RESOURCE_ARRAY(Handle,nthreads); |
|
1411 for (int i=0, j=0; i<nthreads; i++) { |
|
1412 oop thread_obj = threads->obj_at(i); |
|
1413 assert(thread_obj != NULL, "thread_obj is NULL"); |
|
1414 JavaThread *javathread = java_lang_Thread::thread(thread_obj); |
|
1415 // Filter out hidden java threads. |
|
1416 if (javathread != NULL && javathread->is_hidden_from_external_view()) { |
|
1417 hidden_threads++; |
|
1418 continue; |
|
1419 } |
|
1420 thread_objs[j++] = Handle(current_thread, thread_obj); |
|
1421 } |
|
1422 nthreads -= hidden_threads; |
|
1423 } |
|
1424 if (ngroups > 0) { |
|
1425 objArrayOop groups = java_lang_ThreadGroup::groups(group_hdl()); |
|
1426 assert(ngroups <= groups->length(), "too many threads"); |
|
1427 group_objs = NEW_RESOURCE_ARRAY(Handle,ngroups); |
|
1428 for (int i=0; i<ngroups; i++) { |
|
1429 oop group_obj = groups->obj_at(i); |
|
1430 assert(group_obj != NULL, "group_obj != NULL"); |
|
1431 group_objs[i] = Handle(current_thread, group_obj); |
|
1432 } |
|
1433 } |
|
1434 } |
|
1435 |
|
1436 // have to make global handles outside of Threads_lock |
|
1437 *group_count_ptr = ngroups; |
|
1438 *thread_count_ptr = nthreads; |
|
1439 *threads_ptr = new_jthreadArray(nthreads, thread_objs); |
|
1440 *groups_ptr = new_jthreadGroupArray(ngroups, group_objs); |
|
1441 if ((nthreads > 0) && (*threads_ptr == NULL)) { |
|
1442 return JVMTI_ERROR_OUT_OF_MEMORY; |
|
1443 } |
|
1444 if ((ngroups > 0) && (*groups_ptr == NULL)) { |
|
1445 return JVMTI_ERROR_OUT_OF_MEMORY; |
|
1446 } |
|
1447 |
|
1448 return JVMTI_ERROR_NONE; |
|
1449 } /* end GetThreadGroupChildren */ |
|
1450 |
|
1451 |
|
1452 // |
|
1453 // Stack Frame functions |
|
1454 // |
|
1455 |
|
1456 // Threads_lock NOT held, java_thread not protected by lock |
|
1457 // java_thread - pre-checked |
|
1458 // max_frame_count - pre-checked to be greater than or equal to 0 |
|
1459 // frame_buffer - pre-checked for NULL |
|
1460 // count_ptr - pre-checked for NULL |
|
1461 jvmtiError |
|
1462 JvmtiEnv::GetStackTrace(JavaThread* java_thread, jint start_depth, jint max_frame_count, jvmtiFrameInfo* frame_buffer, jint* count_ptr) { |
|
1463 jvmtiError err = JVMTI_ERROR_NONE; |
|
1464 |
|
1465 // It is only safe to perform the direct operation on the current |
|
1466 // thread. All other usage needs to use a vm-safepoint-op for safety. |
|
1467 if (java_thread == JavaThread::current()) { |
|
1468 err = get_stack_trace(java_thread, start_depth, max_frame_count, frame_buffer, count_ptr); |
|
1469 } else { |
|
1470 // JVMTI get stack trace at safepoint. Do not require target thread to |
|
1471 // be suspended. |
|
1472 VM_GetStackTrace op(this, java_thread, start_depth, max_frame_count, frame_buffer, count_ptr); |
|
1473 VMThread::execute(&op); |
|
1474 err = op.result(); |
|
1475 } |
|
1476 |
|
1477 return err; |
|
1478 } /* end GetStackTrace */ |
|
1479 |
|
1480 |
|
1481 // max_frame_count - pre-checked to be greater than or equal to 0 |
|
1482 // stack_info_ptr - pre-checked for NULL |
|
1483 // thread_count_ptr - pre-checked for NULL |
|
1484 jvmtiError |
|
1485 JvmtiEnv::GetAllStackTraces(jint max_frame_count, jvmtiStackInfo** stack_info_ptr, jint* thread_count_ptr) { |
|
1486 jvmtiError err = JVMTI_ERROR_NONE; |
|
1487 JavaThread* calling_thread = JavaThread::current(); |
|
1488 |
|
1489 // JVMTI get stack traces at safepoint. |
|
1490 VM_GetAllStackTraces op(this, calling_thread, max_frame_count); |
|
1491 VMThread::execute(&op); |
|
1492 *thread_count_ptr = op.final_thread_count(); |
|
1493 *stack_info_ptr = op.stack_info(); |
|
1494 err = op.result(); |
|
1495 return err; |
|
1496 } /* end GetAllStackTraces */ |
|
1497 |
|
1498 |
|
1499 // thread_count - pre-checked to be greater than or equal to 0 |
|
1500 // thread_list - pre-checked for NULL |
|
1501 // max_frame_count - pre-checked to be greater than or equal to 0 |
|
1502 // stack_info_ptr - pre-checked for NULL |
|
1503 jvmtiError |
|
1504 JvmtiEnv::GetThreadListStackTraces(jint thread_count, const jthread* thread_list, jint max_frame_count, jvmtiStackInfo** stack_info_ptr) { |
|
1505 jvmtiError err = JVMTI_ERROR_NONE; |
|
1506 // JVMTI get stack traces at safepoint. |
|
1507 VM_GetThreadListStackTraces op(this, thread_count, thread_list, max_frame_count); |
|
1508 VMThread::execute(&op); |
|
1509 err = op.result(); |
|
1510 if (err == JVMTI_ERROR_NONE) { |
|
1511 *stack_info_ptr = op.stack_info(); |
|
1512 } |
|
1513 return err; |
|
1514 } /* end GetThreadListStackTraces */ |
|
1515 |
|
1516 |
|
1517 // Threads_lock NOT held, java_thread not protected by lock |
|
1518 // java_thread - pre-checked |
|
1519 // count_ptr - pre-checked for NULL |
|
1520 jvmtiError |
|
1521 JvmtiEnv::GetFrameCount(JavaThread* java_thread, jint* count_ptr) { |
|
1522 jvmtiError err = JVMTI_ERROR_NONE; |
|
1523 |
|
1524 // retrieve or create JvmtiThreadState. |
|
1525 JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread); |
|
1526 if (state == NULL) { |
|
1527 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
|
1528 } |
|
1529 |
|
1530 // It is only safe to perform the direct operation on the current |
|
1531 // thread. All other usage needs to use a vm-safepoint-op for safety. |
|
1532 if (java_thread == JavaThread::current()) { |
|
1533 err = get_frame_count(state, count_ptr); |
|
1534 } else { |
|
1535 // get java stack frame count at safepoint. |
|
1536 VM_GetFrameCount op(this, state, count_ptr); |
|
1537 VMThread::execute(&op); |
|
1538 err = op.result(); |
|
1539 } |
|
1540 return err; |
|
1541 } /* end GetFrameCount */ |
|
1542 |
|
1543 |
|
1544 // Threads_lock NOT held, java_thread not protected by lock |
|
1545 // java_thread - pre-checked |
|
1546 jvmtiError |
|
1547 JvmtiEnv::PopFrame(JavaThread* java_thread) { |
|
1548 JavaThread* current_thread = JavaThread::current(); |
|
1549 HandleMark hm(current_thread); |
|
1550 uint32_t debug_bits = 0; |
|
1551 |
|
1552 // retrieve or create the state |
|
1553 JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread); |
|
1554 if (state == NULL) { |
|
1555 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
|
1556 } |
|
1557 |
|
1558 // Check if java_thread is fully suspended |
|
1559 if (!is_thread_fully_suspended(java_thread, true /* wait for suspend completion */, &debug_bits)) { |
|
1560 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; |
|
1561 } |
|
1562 // Check to see if a PopFrame was already in progress |
|
1563 if (java_thread->popframe_condition() != JavaThread::popframe_inactive) { |
|
1564 // Probably possible for JVMTI clients to trigger this, but the |
|
1565 // JPDA backend shouldn't allow this to happen |
|
1566 return JVMTI_ERROR_INTERNAL; |
|
1567 } |
|
1568 |
|
1569 { |
|
1570 // Was workaround bug |
|
1571 // 4812902: popFrame hangs if the method is waiting at a synchronize |
|
1572 // Catch this condition and return an error to avoid hanging. |
|
1573 // Now JVMTI spec allows an implementation to bail out with an opaque frame error. |
|
1574 OSThread* osThread = java_thread->osthread(); |
|
1575 if (osThread->get_state() == MONITOR_WAIT) { |
|
1576 return JVMTI_ERROR_OPAQUE_FRAME; |
|
1577 } |
|
1578 } |
|
1579 |
|
1580 { |
|
1581 ResourceMark rm(current_thread); |
|
1582 // Check if there are more than one Java frame in this thread, that the top two frames |
|
1583 // are Java (not native) frames, and that there is no intervening VM frame |
|
1584 int frame_count = 0; |
|
1585 bool is_interpreted[2]; |
|
1586 intptr_t *frame_sp[2]; |
|
1587 // The 2-nd arg of constructor is needed to stop iterating at java entry frame. |
|
1588 for (vframeStream vfs(java_thread, true); !vfs.at_end(); vfs.next()) { |
|
1589 methodHandle mh(current_thread, vfs.method()); |
|
1590 if (mh->is_native()) return(JVMTI_ERROR_OPAQUE_FRAME); |
|
1591 is_interpreted[frame_count] = vfs.is_interpreted_frame(); |
|
1592 frame_sp[frame_count] = vfs.frame_id(); |
|
1593 if (++frame_count > 1) break; |
|
1594 } |
|
1595 if (frame_count < 2) { |
|
1596 // We haven't found two adjacent non-native Java frames on the top. |
|
1597 // There can be two situations here: |
|
1598 // 1. There are no more java frames |
|
1599 // 2. Two top java frames are separated by non-java native frames |
|
1600 if(vframeFor(java_thread, 1) == NULL) { |
|
1601 return JVMTI_ERROR_NO_MORE_FRAMES; |
|
1602 } else { |
|
1603 // Intervening non-java native or VM frames separate java frames. |
|
1604 // Current implementation does not support this. See bug #5031735. |
|
1605 // In theory it is possible to pop frames in such cases. |
|
1606 return JVMTI_ERROR_OPAQUE_FRAME; |
|
1607 } |
|
1608 } |
|
1609 |
|
1610 // If any of the top 2 frames is a compiled one, need to deoptimize it |
|
1611 for (int i = 0; i < 2; i++) { |
|
1612 if (!is_interpreted[i]) { |
|
1613 Deoptimization::deoptimize_frame(java_thread, frame_sp[i]); |
|
1614 } |
|
1615 } |
|
1616 |
|
1617 // Update the thread state to reflect that the top frame is popped |
|
1618 // so that cur_stack_depth is maintained properly and all frameIDs |
|
1619 // are invalidated. |
|
1620 // The current frame will be popped later when the suspended thread |
|
1621 // is resumed and right before returning from VM to Java. |
|
1622 // (see call_VM_base() in assembler_<cpu>.cpp). |
|
1623 |
|
1624 // It's fine to update the thread state here because no JVMTI events |
|
1625 // shall be posted for this PopFrame. |
|
1626 |
|
1627 // It is only safe to perform the direct operation on the current |
|
1628 // thread. All other usage needs to use a vm-safepoint-op for safety. |
|
1629 if (java_thread == JavaThread::current()) { |
|
1630 state->update_for_pop_top_frame(); |
|
1631 } else { |
|
1632 VM_UpdateForPopTopFrame op(state); |
|
1633 VMThread::execute(&op); |
|
1634 jvmtiError err = op.result(); |
|
1635 if (err != JVMTI_ERROR_NONE) { |
|
1636 return err; |
|
1637 } |
|
1638 } |
|
1639 |
|
1640 java_thread->set_popframe_condition(JavaThread::popframe_pending_bit); |
|
1641 // Set pending step flag for this popframe and it is cleared when next |
|
1642 // step event is posted. |
|
1643 state->set_pending_step_for_popframe(); |
|
1644 } |
|
1645 |
|
1646 return JVMTI_ERROR_NONE; |
|
1647 } /* end PopFrame */ |
|
1648 |
|
1649 |
|
1650 // Threads_lock NOT held, java_thread not protected by lock |
|
1651 // java_thread - pre-checked |
|
1652 // java_thread - unchecked |
|
1653 // depth - pre-checked as non-negative |
|
1654 // method_ptr - pre-checked for NULL |
|
1655 // location_ptr - pre-checked for NULL |
|
1656 jvmtiError |
|
1657 JvmtiEnv::GetFrameLocation(JavaThread* java_thread, jint depth, jmethodID* method_ptr, jlocation* location_ptr) { |
|
1658 jvmtiError err = JVMTI_ERROR_NONE; |
|
1659 |
|
1660 // It is only safe to perform the direct operation on the current |
|
1661 // thread. All other usage needs to use a vm-safepoint-op for safety. |
|
1662 if (java_thread == JavaThread::current()) { |
|
1663 err = get_frame_location(java_thread, depth, method_ptr, location_ptr); |
|
1664 } else { |
|
1665 // JVMTI get java stack frame location at safepoint. |
|
1666 VM_GetFrameLocation op(this, java_thread, depth, method_ptr, location_ptr); |
|
1667 VMThread::execute(&op); |
|
1668 err = op.result(); |
|
1669 } |
|
1670 return err; |
|
1671 } /* end GetFrameLocation */ |
|
1672 |
|
1673 |
|
1674 // Threads_lock NOT held, java_thread not protected by lock |
|
1675 // java_thread - pre-checked |
|
1676 // java_thread - unchecked |
|
1677 // depth - pre-checked as non-negative |
|
1678 jvmtiError |
|
1679 JvmtiEnv::NotifyFramePop(JavaThread* java_thread, jint depth) { |
|
1680 jvmtiError err = JVMTI_ERROR_NONE; |
|
1681 ResourceMark rm; |
|
1682 uint32_t debug_bits = 0; |
|
1683 |
|
1684 JvmtiThreadState *state = JvmtiThreadState::state_for(java_thread); |
|
1685 if (state == NULL) { |
|
1686 return JVMTI_ERROR_THREAD_NOT_ALIVE; |
|
1687 } |
|
1688 |
|
1689 if (!JvmtiEnv::is_thread_fully_suspended(java_thread, true, &debug_bits)) { |
|
1690 return JVMTI_ERROR_THREAD_NOT_SUSPENDED; |
|
1691 } |
|
1692 |
|
1693 if (TraceJVMTICalls) { |
|
1694 JvmtiSuspendControl::print(); |
|
1695 } |
|
1696 |
|
1697 vframe *vf = vframeFor(java_thread, depth); |
|
1698 if (vf == NULL) { |
|
1699 return JVMTI_ERROR_NO_MORE_FRAMES; |
|
1700 } |
|
1701 |
|
1702 if (!vf->is_java_frame() || ((javaVFrame*) vf)->method()->is_native()) { |
|
1703 return JVMTI_ERROR_OPAQUE_FRAME; |
|
1704 } |
|
1705 |
|
1706 assert(vf->frame_pointer() != NULL, "frame pointer mustn't be NULL"); |
|
1707 |
|
1708 // It is only safe to perform the direct operation on the current |
|
1709 // thread. All other usage needs to use a vm-safepoint-op for safety. |
|
1710 if (java_thread == JavaThread::current()) { |
|
1711 int frame_number = state->count_frames() - depth; |
|
1712 state->env_thread_state(this)->set_frame_pop(frame_number); |
|
1713 } else { |
|
1714 VM_SetFramePop op(this, state, depth); |
|
1715 VMThread::execute(&op); |
|
1716 err = op.result(); |
|
1717 } |
|
1718 return err; |
|
1719 } /* end NotifyFramePop */ |
|
1720 |
|
1721 |
|
1722 // |
|
1723 // Force Early Return functions |
|
1724 // |
|
1725 |
|
1726 // Threads_lock NOT held, java_thread not protected by lock |
|
1727 // java_thread - pre-checked |
|
1728 jvmtiError |
|
1729 JvmtiEnv::ForceEarlyReturnObject(JavaThread* java_thread, jobject value) { |
|
1730 jvalue val; |
|
1731 val.l = value; |
|
1732 return force_early_return(java_thread, val, atos); |
|
1733 } /* end ForceEarlyReturnObject */ |
|
1734 |
|
1735 |
|
1736 // Threads_lock NOT held, java_thread not protected by lock |
|
1737 // java_thread - pre-checked |
|
1738 jvmtiError |
|
1739 JvmtiEnv::ForceEarlyReturnInt(JavaThread* java_thread, jint value) { |
|
1740 jvalue val; |
|
1741 val.i = value; |
|
1742 return force_early_return(java_thread, val, itos); |
|
1743 } /* end ForceEarlyReturnInt */ |
|
1744 |
|
1745 |
|
1746 // Threads_lock NOT held, java_thread not protected by lock |
|
1747 // java_thread - pre-checked |
|
1748 jvmtiError |
|
1749 JvmtiEnv::ForceEarlyReturnLong(JavaThread* java_thread, jlong value) { |
|
1750 jvalue val; |
|
1751 val.j = value; |
|
1752 return force_early_return(java_thread, val, ltos); |
|
1753 } /* end ForceEarlyReturnLong */ |
|
1754 |
|
1755 |
|
1756 // Threads_lock NOT held, java_thread not protected by lock |
|
1757 // java_thread - pre-checked |
|
1758 jvmtiError |
|
1759 JvmtiEnv::ForceEarlyReturnFloat(JavaThread* java_thread, jfloat value) { |
|
1760 jvalue val; |
|
1761 val.f = value; |
|
1762 return force_early_return(java_thread, val, ftos); |
|
1763 } /* end ForceEarlyReturnFloat */ |
|
1764 |
|
1765 |
|
1766 // Threads_lock NOT held, java_thread not protected by lock |
|
1767 // java_thread - pre-checked |
|
1768 jvmtiError |
|
1769 JvmtiEnv::ForceEarlyReturnDouble(JavaThread* java_thread, jdouble value) { |
|
1770 jvalue val; |
|
1771 val.d = value; |
|
1772 return force_early_return(java_thread, val, dtos); |
|
1773 } /* end ForceEarlyReturnDouble */ |
|
1774 |
|
1775 |
|
1776 // Threads_lock NOT held, java_thread not protected by lock |
|
1777 // java_thread - pre-checked |
|
1778 jvmtiError |
|
1779 JvmtiEnv::ForceEarlyReturnVoid(JavaThread* java_thread) { |
|
1780 jvalue val; |
|
1781 val.j = 0L; |
|
1782 return force_early_return(java_thread, val, vtos); |
|
1783 } /* end ForceEarlyReturnVoid */ |
|
1784 |
|
1785 |
|
1786 // |
|
1787 // Heap functions |
|
1788 // |
|
1789 |
|
1790 // klass - NULL is a valid value, must be checked |
|
1791 // initial_object - NULL is a valid value, must be checked |
|
1792 // callbacks - pre-checked for NULL |
|
1793 // user_data - NULL is a valid value, must be checked |
|
1794 jvmtiError |
|
1795 JvmtiEnv::FollowReferences(jint heap_filter, jclass klass, jobject initial_object, const jvmtiHeapCallbacks* callbacks, const void* user_data) { |
|
1796 // check klass if provided |
|
1797 Klass* k = NULL; |
|
1798 if (klass != NULL) { |
|
1799 oop k_mirror = JNIHandles::resolve_external_guard(klass); |
|
1800 if (k_mirror == NULL) { |
|
1801 return JVMTI_ERROR_INVALID_CLASS; |
|
1802 } |
|
1803 if (java_lang_Class::is_primitive(k_mirror)) { |
|
1804 return JVMTI_ERROR_NONE; |
|
1805 } |
|
1806 k = java_lang_Class::as_Klass(k_mirror); |
|
1807 if (klass == NULL) { |
|
1808 return JVMTI_ERROR_INVALID_CLASS; |
|
1809 } |
|
1810 } |
|
1811 |
|
1812 if (initial_object != NULL) { |
|
1813 oop init_obj = JNIHandles::resolve_external_guard(initial_object); |
|
1814 if (init_obj == NULL) { |
|
1815 return JVMTI_ERROR_INVALID_OBJECT; |
|
1816 } |
|
1817 } |
|
1818 |
|
1819 Thread *thread = Thread::current(); |
|
1820 HandleMark hm(thread); |
|
1821 |
|
1822 TraceTime t("FollowReferences", TRACETIME_LOG(Debug, jvmti, objecttagging)); |
|
1823 JvmtiTagMap::tag_map_for(this)->follow_references(heap_filter, k, initial_object, callbacks, user_data); |
|
1824 return JVMTI_ERROR_NONE; |
|
1825 } /* end FollowReferences */ |
|
1826 |
|
1827 |
|
1828 // klass - NULL is a valid value, must be checked |
|
1829 // callbacks - pre-checked for NULL |
|
1830 // user_data - NULL is a valid value, must be checked |
|
1831 jvmtiError |
|
1832 JvmtiEnv::IterateThroughHeap(jint heap_filter, jclass klass, const jvmtiHeapCallbacks* callbacks, const void* user_data) { |
|
1833 // check klass if provided |
|
1834 Klass* k = NULL; |
|
1835 if (klass != NULL) { |
|
1836 oop k_mirror = JNIHandles::resolve_external_guard(klass); |
|
1837 if (k_mirror == NULL) { |
|
1838 return JVMTI_ERROR_INVALID_CLASS; |
|
1839 } |
|
1840 if (java_lang_Class::is_primitive(k_mirror)) { |
|
1841 return JVMTI_ERROR_NONE; |
|
1842 } |
|
1843 k = java_lang_Class::as_Klass(k_mirror); |
|
1844 if (k == NULL) { |
|
1845 return JVMTI_ERROR_INVALID_CLASS; |
|
1846 } |
|
1847 } |
|
1848 |
|
1849 TraceTime t("IterateThroughHeap", TRACETIME_LOG(Debug, jvmti, objecttagging)); |
|
1850 JvmtiTagMap::tag_map_for(this)->iterate_through_heap(heap_filter, k, callbacks, user_data); |
|
1851 return JVMTI_ERROR_NONE; |
|
1852 } /* end IterateThroughHeap */ |
|
1853 |
|
1854 |
|
1855 // tag_ptr - pre-checked for NULL |
|
1856 jvmtiError |
|
1857 JvmtiEnv::GetTag(jobject object, jlong* tag_ptr) { |
|
1858 oop o = JNIHandles::resolve_external_guard(object); |
|
1859 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); |
|
1860 *tag_ptr = JvmtiTagMap::tag_map_for(this)->get_tag(object); |
|
1861 return JVMTI_ERROR_NONE; |
|
1862 } /* end GetTag */ |
|
1863 |
|
1864 |
|
1865 jvmtiError |
|
1866 JvmtiEnv::SetTag(jobject object, jlong tag) { |
|
1867 oop o = JNIHandles::resolve_external_guard(object); |
|
1868 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); |
|
1869 JvmtiTagMap::tag_map_for(this)->set_tag(object, tag); |
|
1870 return JVMTI_ERROR_NONE; |
|
1871 } /* end SetTag */ |
|
1872 |
|
1873 |
|
1874 // tag_count - pre-checked to be greater than or equal to 0 |
|
1875 // tags - pre-checked for NULL |
|
1876 // count_ptr - pre-checked for NULL |
|
1877 // object_result_ptr - NULL is a valid value, must be checked |
|
1878 // tag_result_ptr - NULL is a valid value, must be checked |
|
1879 jvmtiError |
|
1880 JvmtiEnv::GetObjectsWithTags(jint tag_count, const jlong* tags, jint* count_ptr, jobject** object_result_ptr, jlong** tag_result_ptr) { |
|
1881 TraceTime t("GetObjectsWithTags", TRACETIME_LOG(Debug, jvmti, objecttagging)); |
|
1882 return JvmtiTagMap::tag_map_for(this)->get_objects_with_tags((jlong*)tags, tag_count, count_ptr, object_result_ptr, tag_result_ptr); |
|
1883 } /* end GetObjectsWithTags */ |
|
1884 |
|
1885 |
|
1886 jvmtiError |
|
1887 JvmtiEnv::ForceGarbageCollection() { |
|
1888 Universe::heap()->collect(GCCause::_jvmti_force_gc); |
|
1889 return JVMTI_ERROR_NONE; |
|
1890 } /* end ForceGarbageCollection */ |
|
1891 |
|
1892 |
|
1893 // |
|
1894 // Heap (1.0) functions |
|
1895 // |
|
1896 |
|
1897 // object_reference_callback - pre-checked for NULL |
|
1898 // user_data - NULL is a valid value, must be checked |
|
1899 jvmtiError |
|
1900 JvmtiEnv::IterateOverObjectsReachableFromObject(jobject object, jvmtiObjectReferenceCallback object_reference_callback, const void* user_data) { |
|
1901 oop o = JNIHandles::resolve_external_guard(object); |
|
1902 NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); |
|
1903 JvmtiTagMap::tag_map_for(this)->iterate_over_objects_reachable_from_object(object, object_reference_callback, user_data); |
|
1904 return JVMTI_ERROR_NONE; |
|
1905 } /* end IterateOverObjectsReachableFromObject */ |
|
1906 |
|
1907 |
|
1908 // heap_root_callback - NULL is a valid value, must be checked |
|
1909 // stack_ref_callback - NULL is a valid value, must be checked |
|
1910 // object_ref_callback - NULL is a valid value, must be checked |
|
1911 // user_data - NULL is a valid value, must be checked |
|
1912 jvmtiError |
|
1913 JvmtiEnv::IterateOverReachableObjects(jvmtiHeapRootCallback heap_root_callback, jvmtiStackReferenceCallback stack_ref_callback, jvmtiObjectReferenceCallback object_ref_callback, const void* user_data) { |
|
1914 TraceTime t("IterateOverReachableObjects", TRACETIME_LOG(Debug, jvmti, objecttagging)); |
|
1915 JvmtiTagMap::tag_map_for(this)->iterate_over_reachable_objects(heap_root_callback, stack_ref_callback, object_ref_callback, user_data); |
|
1916 return JVMTI_ERROR_NONE; |
|
1917 } /* end IterateOverReachableObjects */ |
|
1918 |
|
1919 |
|
1920 // heap_object_callback - pre-checked for NULL |
|
1921 // user_data - NULL is a valid value, must be checked |
|
1922 jvmtiError |
|
1923 JvmtiEnv::IterateOverHeap(jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) { |
|
1924 TraceTime t("IterateOverHeap", TRACETIME_LOG(Debug, jvmti, objecttagging)); |
|
1925 Thread *thread = Thread::current(); |
|
1926 HandleMark hm(thread); |
|
1927 JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, NULL, heap_object_callback, user_data); |
|
1928 return JVMTI_ERROR_NONE; |
|
1929 } /* end IterateOverHeap */ |
|
1930 |
|
1931 |
|
1932 // k_mirror - may be primitive, this must be checked |
|
1933 // heap_object_callback - pre-checked for NULL |
|
1934 // user_data - NULL is a valid value, must be checked |
|
1935 jvmtiError |
|
1936 JvmtiEnv::IterateOverInstancesOfClass(oop k_mirror, jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) { |
|
1937 if (java_lang_Class::is_primitive(k_mirror)) { |
|
1938 // DO PRIMITIVE CLASS PROCESSING |
|
1939 return JVMTI_ERROR_NONE; |
|
1940 } |
|
1941 Klass* klass = java_lang_Class::as_Klass(k_mirror); |
|
1942 if (klass == NULL) { |
|
1943 return JVMTI_ERROR_INVALID_CLASS; |
|
1944 } |
|
1945 TraceTime t("IterateOverInstancesOfClass", TRACETIME_LOG(Debug, jvmti, objecttagging)); |
|
1946 JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, klass, heap_object_callback, user_data); |
|
1947 return JVMTI_ERROR_NONE; |
|
1948 } /* end IterateOverInstancesOfClass */ |
|
1949 |
|
1950 |
|
1951 // |
|
1952 // Local Variable functions |
|
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 // value_ptr - pre-checked for NULL |
|
1960 jvmtiError |
|
1961 JvmtiEnv::GetLocalObject(JavaThread* java_thread, jint depth, jint slot, jobject* value_ptr) { |
|
1962 JavaThread* current_thread = JavaThread::current(); |
|
1963 // rm object is created to clean up the javaVFrame created in |
|
1964 // doit_prologue(), but after doit() is finished with it. |
|
1965 ResourceMark rm(current_thread); |
|
1966 |
|
1967 VM_GetOrSetLocal op(java_thread, current_thread, depth, slot); |
|
1968 VMThread::execute(&op); |
|
1969 jvmtiError err = op.result(); |
|
1970 if (err != JVMTI_ERROR_NONE) { |
|
1971 return err; |
|
1972 } else { |
|
1973 *value_ptr = op.value().l; |
|
1974 return JVMTI_ERROR_NONE; |
|
1975 } |
|
1976 } /* end GetLocalObject */ |
|
1977 |
|
1978 // Threads_lock NOT held, java_thread not protected by lock |
|
1979 // java_thread - pre-checked |
|
1980 // java_thread - unchecked |
|
1981 // depth - pre-checked as non-negative |
|
1982 // value - pre-checked for NULL |
|
1983 jvmtiError |
|
1984 JvmtiEnv::GetLocalInstance(JavaThread* java_thread, jint depth, jobject* value_ptr){ |
|
1985 JavaThread* current_thread = JavaThread::current(); |
|
1986 // rm object is created to clean up the javaVFrame created in |
|
1987 // doit_prologue(), but after doit() is finished with it. |
|
1988 ResourceMark rm(current_thread); |
|
1989 |
|
1990 VM_GetReceiver op(java_thread, current_thread, depth); |
|
1991 VMThread::execute(&op); |
|
1992 jvmtiError err = op.result(); |
|
1993 if (err != JVMTI_ERROR_NONE) { |
|
1994 return err; |
|
1995 } else { |
|
1996 *value_ptr = op.value().l; |
|
1997 return JVMTI_ERROR_NONE; |
|
1998 } |
|
1999 } /* end GetLocalInstance */ |
|
2000 |
|
2001 |
|
2002 // Threads_lock NOT held, java_thread not protected by lock |
|
2003 // java_thread - pre-checked |
|
2004 // java_thread - unchecked |
|
2005 // depth - pre-checked as non-negative |
|
2006 // value_ptr - pre-checked for NULL |
|
2007 jvmtiError |
|
2008 JvmtiEnv::GetLocalInt(JavaThread* java_thread, jint depth, jint slot, jint* value_ptr) { |
|
2009 // rm object is created to clean up the javaVFrame created in |
|
2010 // doit_prologue(), but after doit() is finished with it. |
|
2011 ResourceMark rm; |
|
2012 |
|
2013 VM_GetOrSetLocal op(java_thread, depth, slot, T_INT); |
|
2014 VMThread::execute(&op); |
|
2015 *value_ptr = op.value().i; |
|
2016 return op.result(); |
|
2017 } /* end GetLocalInt */ |
|
2018 |
|
2019 |
|
2020 // Threads_lock NOT held, java_thread not protected by lock |
|
2021 // java_thread - pre-checked |
|
2022 // java_thread - unchecked |
|
2023 // depth - pre-checked as non-negative |
|
2024 // value_ptr - pre-checked for NULL |
|
2025 jvmtiError |
|
2026 JvmtiEnv::GetLocalLong(JavaThread* java_thread, jint depth, jint slot, jlong* value_ptr) { |
|
2027 // rm object is created to clean up the javaVFrame created in |
|
2028 // doit_prologue(), but after doit() is finished with it. |
|
2029 ResourceMark rm; |
|
2030 |
|
2031 VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG); |
|
2032 VMThread::execute(&op); |
|
2033 *value_ptr = op.value().j; |
|
2034 return op.result(); |
|
2035 } /* end GetLocalLong */ |
|
2036 |
|
2037 |
|
2038 // Threads_lock NOT held, java_thread not protected by lock |
|
2039 // java_thread - pre-checked |
|
2040 // java_thread - unchecked |
|
2041 // depth - pre-checked as non-negative |
|
2042 // value_ptr - pre-checked for NULL |
|
2043 jvmtiError |
|
2044 JvmtiEnv::GetLocalFloat(JavaThread* java_thread, jint depth, jint slot, jfloat* value_ptr) { |
|
2045 // rm object is created to clean up the javaVFrame created in |
|
2046 // doit_prologue(), but after doit() is finished with it. |
|
2047 ResourceMark rm; |
|
2048 |
|
2049 VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT); |
|
2050 VMThread::execute(&op); |
|
2051 *value_ptr = op.value().f; |
|
2052 return op.result(); |
|
2053 } /* end GetLocalFloat */ |
|
2054 |
|
2055 |
|
2056 // Threads_lock NOT held, java_thread not protected by lock |
|
2057 // java_thread - pre-checked |
|
2058 // java_thread - unchecked |
|
2059 // depth - pre-checked as non-negative |
|
2060 // value_ptr - pre-checked for NULL |
|
2061 jvmtiError |
|
2062 JvmtiEnv::GetLocalDouble(JavaThread* java_thread, jint depth, jint slot, jdouble* value_ptr) { |
|
2063 // rm object is created to clean up the javaVFrame created in |
|
2064 // doit_prologue(), but after doit() is finished with it. |
|
2065 ResourceMark rm; |
|
2066 |
|
2067 VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE); |
|
2068 VMThread::execute(&op); |
|
2069 *value_ptr = op.value().d; |
|
2070 return op.result(); |
|
2071 } /* end GetLocalDouble */ |
|
2072 |
|
2073 |
|
2074 // Threads_lock NOT held, java_thread not protected by lock |
|
2075 // java_thread - pre-checked |
|
2076 // java_thread - unchecked |
|
2077 // depth - pre-checked as non-negative |
|
2078 jvmtiError |
|
2079 JvmtiEnv::SetLocalObject(JavaThread* java_thread, jint depth, jint slot, jobject value) { |
|
2080 // rm object is created to clean up the javaVFrame created in |
|
2081 // doit_prologue(), but after doit() is finished with it. |
|
2082 ResourceMark rm; |
|
2083 jvalue val; |
|
2084 val.l = value; |
|
2085 VM_GetOrSetLocal op(java_thread, depth, slot, T_OBJECT, val); |
|
2086 VMThread::execute(&op); |
|
2087 return op.result(); |
|
2088 } /* end SetLocalObject */ |
|
2089 |
|
2090 |
|
2091 // Threads_lock NOT held, java_thread not protected by lock |
|
2092 // java_thread - pre-checked |
|
2093 // java_thread - unchecked |
|
2094 // depth - pre-checked as non-negative |
|
2095 jvmtiError |
|
2096 JvmtiEnv::SetLocalInt(JavaThread* java_thread, jint depth, jint slot, jint value) { |
|
2097 // rm object is created to clean up the javaVFrame created in |
|
2098 // doit_prologue(), but after doit() is finished with it. |
|
2099 ResourceMark rm; |
|
2100 jvalue val; |
|
2101 val.i = value; |
|
2102 VM_GetOrSetLocal op(java_thread, depth, slot, T_INT, val); |
|
2103 VMThread::execute(&op); |
|
2104 return op.result(); |
|
2105 } /* end SetLocalInt */ |
|
2106 |
|
2107 |
|
2108 // Threads_lock NOT held, java_thread not protected by lock |
|
2109 // java_thread - pre-checked |
|
2110 // java_thread - unchecked |
|
2111 // depth - pre-checked as non-negative |
|
2112 jvmtiError |
|
2113 JvmtiEnv::SetLocalLong(JavaThread* java_thread, jint depth, jint slot, jlong value) { |
|
2114 // rm object is created to clean up the javaVFrame created in |
|
2115 // doit_prologue(), but after doit() is finished with it. |
|
2116 ResourceMark rm; |
|
2117 jvalue val; |
|
2118 val.j = value; |
|
2119 VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG, val); |
|
2120 VMThread::execute(&op); |
|
2121 return op.result(); |
|
2122 } /* end SetLocalLong */ |
|
2123 |
|
2124 |
|
2125 // Threads_lock NOT held, java_thread not protected by lock |
|
2126 // java_thread - pre-checked |
|
2127 // java_thread - unchecked |
|
2128 // depth - pre-checked as non-negative |
|
2129 jvmtiError |
|
2130 JvmtiEnv::SetLocalFloat(JavaThread* java_thread, jint depth, jint slot, jfloat value) { |
|
2131 // rm object is created to clean up the javaVFrame created in |
|
2132 // doit_prologue(), but after doit() is finished with it. |
|
2133 ResourceMark rm; |
|
2134 jvalue val; |
|
2135 val.f = value; |
|
2136 VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT, val); |
|
2137 VMThread::execute(&op); |
|
2138 return op.result(); |
|
2139 } /* end SetLocalFloat */ |
|
2140 |
|
2141 |
|
2142 // Threads_lock NOT held, java_thread not protected by lock |
|
2143 // java_thread - pre-checked |
|
2144 // java_thread - unchecked |
|
2145 // depth - pre-checked as non-negative |
|
2146 jvmtiError |
|
2147 JvmtiEnv::SetLocalDouble(JavaThread* java_thread, jint depth, jint slot, jdouble value) { |
|
2148 // rm object is created to clean up the javaVFrame created in |
|
2149 // doit_prologue(), but after doit() is finished with it. |
|
2150 ResourceMark rm; |
|
2151 jvalue val; |
|
2152 val.d = value; |
|
2153 VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE, val); |
|
2154 VMThread::execute(&op); |
|
2155 return op.result(); |
|
2156 } /* end SetLocalDouble */ |
|
2157 |
|
2158 |
|
2159 // |
|
2160 // Breakpoint functions |
|
2161 // |
|
2162 |
|
2163 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method |
|
2164 jvmtiError |
|
2165 JvmtiEnv::SetBreakpoint(Method* method_oop, jlocation location) { |
|
2166 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
|
2167 if (location < 0) { // simple invalid location check first |
|
2168 return JVMTI_ERROR_INVALID_LOCATION; |
|
2169 } |
|
2170 // verify that the breakpoint is not past the end of the method |
|
2171 if (location >= (jlocation) method_oop->code_size()) { |
|
2172 return JVMTI_ERROR_INVALID_LOCATION; |
|
2173 } |
|
2174 |
|
2175 ResourceMark rm; |
|
2176 JvmtiBreakpoint bp(method_oop, location); |
|
2177 JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints(); |
|
2178 if (jvmti_breakpoints.set(bp) == JVMTI_ERROR_DUPLICATE) |
|
2179 return JVMTI_ERROR_DUPLICATE; |
|
2180 |
|
2181 if (TraceJVMTICalls) { |
|
2182 jvmti_breakpoints.print(); |
|
2183 } |
|
2184 |
|
2185 return JVMTI_ERROR_NONE; |
|
2186 } /* end SetBreakpoint */ |
|
2187 |
|
2188 |
|
2189 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method |
|
2190 jvmtiError |
|
2191 JvmtiEnv::ClearBreakpoint(Method* method_oop, jlocation location) { |
|
2192 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
|
2193 |
|
2194 if (location < 0) { // simple invalid location check first |
|
2195 return JVMTI_ERROR_INVALID_LOCATION; |
|
2196 } |
|
2197 |
|
2198 // verify that the breakpoint is not past the end of the method |
|
2199 if (location >= (jlocation) method_oop->code_size()) { |
|
2200 return JVMTI_ERROR_INVALID_LOCATION; |
|
2201 } |
|
2202 |
|
2203 JvmtiBreakpoint bp(method_oop, location); |
|
2204 |
|
2205 JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints(); |
|
2206 if (jvmti_breakpoints.clear(bp) == JVMTI_ERROR_NOT_FOUND) |
|
2207 return JVMTI_ERROR_NOT_FOUND; |
|
2208 |
|
2209 if (TraceJVMTICalls) { |
|
2210 jvmti_breakpoints.print(); |
|
2211 } |
|
2212 |
|
2213 return JVMTI_ERROR_NONE; |
|
2214 } /* end ClearBreakpoint */ |
|
2215 |
|
2216 |
|
2217 // |
|
2218 // Watched Field functions |
|
2219 // |
|
2220 |
|
2221 jvmtiError |
|
2222 JvmtiEnv::SetFieldAccessWatch(fieldDescriptor* fdesc_ptr) { |
|
2223 // make sure we haven't set this watch before |
|
2224 if (fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_DUPLICATE; |
|
2225 fdesc_ptr->set_is_field_access_watched(true); |
|
2226 |
|
2227 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, true); |
|
2228 |
|
2229 return JVMTI_ERROR_NONE; |
|
2230 } /* end SetFieldAccessWatch */ |
|
2231 |
|
2232 |
|
2233 jvmtiError |
|
2234 JvmtiEnv::ClearFieldAccessWatch(fieldDescriptor* fdesc_ptr) { |
|
2235 // make sure we have a watch to clear |
|
2236 if (!fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_NOT_FOUND; |
|
2237 fdesc_ptr->set_is_field_access_watched(false); |
|
2238 |
|
2239 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, false); |
|
2240 |
|
2241 return JVMTI_ERROR_NONE; |
|
2242 } /* end ClearFieldAccessWatch */ |
|
2243 |
|
2244 |
|
2245 jvmtiError |
|
2246 JvmtiEnv::SetFieldModificationWatch(fieldDescriptor* fdesc_ptr) { |
|
2247 // make sure we haven't set this watch before |
|
2248 if (fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_DUPLICATE; |
|
2249 fdesc_ptr->set_is_field_modification_watched(true); |
|
2250 |
|
2251 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, true); |
|
2252 |
|
2253 return JVMTI_ERROR_NONE; |
|
2254 } /* end SetFieldModificationWatch */ |
|
2255 |
|
2256 |
|
2257 jvmtiError |
|
2258 JvmtiEnv::ClearFieldModificationWatch(fieldDescriptor* fdesc_ptr) { |
|
2259 // make sure we have a watch to clear |
|
2260 if (!fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_NOT_FOUND; |
|
2261 fdesc_ptr->set_is_field_modification_watched(false); |
|
2262 |
|
2263 JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, false); |
|
2264 |
|
2265 return JVMTI_ERROR_NONE; |
|
2266 } /* end ClearFieldModificationWatch */ |
|
2267 |
|
2268 // |
|
2269 // Class functions |
|
2270 // |
|
2271 |
|
2272 |
|
2273 // k_mirror - may be primitive, this must be checked |
|
2274 // signature_ptr - NULL is a valid value, must be checked |
|
2275 // generic_ptr - NULL is a valid value, must be checked |
|
2276 jvmtiError |
|
2277 JvmtiEnv::GetClassSignature(oop k_mirror, char** signature_ptr, char** generic_ptr) { |
|
2278 ResourceMark rm; |
|
2279 bool isPrimitive = java_lang_Class::is_primitive(k_mirror); |
|
2280 Klass* k = NULL; |
|
2281 if (!isPrimitive) { |
|
2282 k = java_lang_Class::as_Klass(k_mirror); |
|
2283 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
|
2284 } |
|
2285 if (signature_ptr != NULL) { |
|
2286 char* result = NULL; |
|
2287 if (isPrimitive) { |
|
2288 char tchar = type2char(java_lang_Class::primitive_type(k_mirror)); |
|
2289 result = (char*) jvmtiMalloc(2); |
|
2290 result[0] = tchar; |
|
2291 result[1] = '\0'; |
|
2292 } else { |
|
2293 const char* class_sig = k->signature_name(); |
|
2294 result = (char *) jvmtiMalloc(strlen(class_sig)+1); |
|
2295 strcpy(result, class_sig); |
|
2296 } |
|
2297 *signature_ptr = result; |
|
2298 } |
|
2299 if (generic_ptr != NULL) { |
|
2300 *generic_ptr = NULL; |
|
2301 if (!isPrimitive && k->is_instance_klass()) { |
|
2302 Symbol* soo = InstanceKlass::cast(k)->generic_signature(); |
|
2303 if (soo != NULL) { |
|
2304 const char *gen_sig = soo->as_C_string(); |
|
2305 if (gen_sig != NULL) { |
|
2306 char* gen_result; |
|
2307 jvmtiError err = allocate(strlen(gen_sig) + 1, |
|
2308 (unsigned char **)&gen_result); |
|
2309 if (err != JVMTI_ERROR_NONE) { |
|
2310 return err; |
|
2311 } |
|
2312 strcpy(gen_result, gen_sig); |
|
2313 *generic_ptr = gen_result; |
|
2314 } |
|
2315 } |
|
2316 } |
|
2317 } |
|
2318 return JVMTI_ERROR_NONE; |
|
2319 } /* end GetClassSignature */ |
|
2320 |
|
2321 |
|
2322 // k_mirror - may be primitive, this must be checked |
|
2323 // status_ptr - pre-checked for NULL |
|
2324 jvmtiError |
|
2325 JvmtiEnv::GetClassStatus(oop k_mirror, jint* status_ptr) { |
|
2326 jint result = 0; |
|
2327 if (java_lang_Class::is_primitive(k_mirror)) { |
|
2328 result |= JVMTI_CLASS_STATUS_PRIMITIVE; |
|
2329 } else { |
|
2330 Klass* k = java_lang_Class::as_Klass(k_mirror); |
|
2331 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
|
2332 result = k->jvmti_class_status(); |
|
2333 } |
|
2334 *status_ptr = result; |
|
2335 |
|
2336 return JVMTI_ERROR_NONE; |
|
2337 } /* end GetClassStatus */ |
|
2338 |
|
2339 |
|
2340 // k_mirror - may be primitive, this must be checked |
|
2341 // source_name_ptr - pre-checked for NULL |
|
2342 jvmtiError |
|
2343 JvmtiEnv::GetSourceFileName(oop k_mirror, char** source_name_ptr) { |
|
2344 if (java_lang_Class::is_primitive(k_mirror)) { |
|
2345 return JVMTI_ERROR_ABSENT_INFORMATION; |
|
2346 } |
|
2347 Klass* k_klass = java_lang_Class::as_Klass(k_mirror); |
|
2348 NULL_CHECK(k_klass, JVMTI_ERROR_INVALID_CLASS); |
|
2349 |
|
2350 if (!k_klass->is_instance_klass()) { |
|
2351 return JVMTI_ERROR_ABSENT_INFORMATION; |
|
2352 } |
|
2353 |
|
2354 Symbol* sfnOop = InstanceKlass::cast(k_klass)->source_file_name(); |
|
2355 NULL_CHECK(sfnOop, JVMTI_ERROR_ABSENT_INFORMATION); |
|
2356 { |
|
2357 JavaThread* current_thread = JavaThread::current(); |
|
2358 ResourceMark rm(current_thread); |
|
2359 const char* sfncp = (const char*) sfnOop->as_C_string(); |
|
2360 *source_name_ptr = (char *) jvmtiMalloc(strlen(sfncp)+1); |
|
2361 strcpy(*source_name_ptr, sfncp); |
|
2362 } |
|
2363 |
|
2364 return JVMTI_ERROR_NONE; |
|
2365 } /* end GetSourceFileName */ |
|
2366 |
|
2367 |
|
2368 // k_mirror - may be primitive, this must be checked |
|
2369 // modifiers_ptr - pre-checked for NULL |
|
2370 jvmtiError |
|
2371 JvmtiEnv::GetClassModifiers(oop k_mirror, jint* modifiers_ptr) { |
|
2372 JavaThread* current_thread = JavaThread::current(); |
|
2373 jint result = 0; |
|
2374 if (!java_lang_Class::is_primitive(k_mirror)) { |
|
2375 Klass* k = java_lang_Class::as_Klass(k_mirror); |
|
2376 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
|
2377 result = k->compute_modifier_flags(current_thread); |
|
2378 JavaThread* THREAD = current_thread; // pass to macros |
|
2379 if (HAS_PENDING_EXCEPTION) { |
|
2380 CLEAR_PENDING_EXCEPTION; |
|
2381 return JVMTI_ERROR_INTERNAL; |
|
2382 }; |
|
2383 |
|
2384 // Reset the deleted ACC_SUPER bit ( deleted in compute_modifier_flags()). |
|
2385 if(k->is_super()) { |
|
2386 result |= JVM_ACC_SUPER; |
|
2387 } |
|
2388 } else { |
|
2389 result = (JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC); |
|
2390 } |
|
2391 *modifiers_ptr = result; |
|
2392 |
|
2393 return JVMTI_ERROR_NONE; |
|
2394 } /* end GetClassModifiers */ |
|
2395 |
|
2396 |
|
2397 // k_mirror - may be primitive, this must be checked |
|
2398 // method_count_ptr - pre-checked for NULL |
|
2399 // methods_ptr - pre-checked for NULL |
|
2400 jvmtiError |
|
2401 JvmtiEnv::GetClassMethods(oop k_mirror, jint* method_count_ptr, jmethodID** methods_ptr) { |
|
2402 JavaThread* current_thread = JavaThread::current(); |
|
2403 HandleMark hm(current_thread); |
|
2404 |
|
2405 if (java_lang_Class::is_primitive(k_mirror)) { |
|
2406 *method_count_ptr = 0; |
|
2407 *methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID)); |
|
2408 return JVMTI_ERROR_NONE; |
|
2409 } |
|
2410 Klass* k = java_lang_Class::as_Klass(k_mirror); |
|
2411 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
|
2412 |
|
2413 // Return CLASS_NOT_PREPARED error as per JVMTI spec. |
|
2414 if (!(k->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) { |
|
2415 return JVMTI_ERROR_CLASS_NOT_PREPARED; |
|
2416 } |
|
2417 |
|
2418 if (!k->is_instance_klass()) { |
|
2419 *method_count_ptr = 0; |
|
2420 *methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID)); |
|
2421 return JVMTI_ERROR_NONE; |
|
2422 } |
|
2423 InstanceKlass* ik = InstanceKlass::cast(k); |
|
2424 // Allocate the result and fill it in |
|
2425 int result_length = ik->methods()->length(); |
|
2426 jmethodID* result_list = (jmethodID*)jvmtiMalloc(result_length * sizeof(jmethodID)); |
|
2427 int index; |
|
2428 bool jmethodids_found = true; |
|
2429 |
|
2430 if (JvmtiExport::can_maintain_original_method_order()) { |
|
2431 // Use the original method ordering indices stored in the class, so we can emit |
|
2432 // jmethodIDs in the order they appeared in the class file |
|
2433 for (index = 0; index < result_length; index++) { |
|
2434 Method* m = ik->methods()->at(index); |
|
2435 int original_index = ik->method_ordering()->at(index); |
|
2436 assert(original_index >= 0 && original_index < result_length, "invalid original method index"); |
|
2437 jmethodID id; |
|
2438 if (jmethodids_found) { |
|
2439 id = m->find_jmethod_id_or_null(); |
|
2440 if (id == NULL) { |
|
2441 // If we find an uninitialized value, make sure there is |
|
2442 // enough space for all the uninitialized values we might |
|
2443 // find. |
|
2444 ik->ensure_space_for_methodids(index); |
|
2445 jmethodids_found = false; |
|
2446 id = m->jmethod_id(); |
|
2447 } |
|
2448 } else { |
|
2449 id = m->jmethod_id(); |
|
2450 } |
|
2451 result_list[original_index] = id; |
|
2452 } |
|
2453 } else { |
|
2454 // otherwise just copy in any order |
|
2455 for (index = 0; index < result_length; index++) { |
|
2456 Method* m = ik->methods()->at(index); |
|
2457 jmethodID id; |
|
2458 if (jmethodids_found) { |
|
2459 id = m->find_jmethod_id_or_null(); |
|
2460 if (id == NULL) { |
|
2461 // If we find an uninitialized value, make sure there is |
|
2462 // enough space for all the uninitialized values we might |
|
2463 // find. |
|
2464 ik->ensure_space_for_methodids(index); |
|
2465 jmethodids_found = false; |
|
2466 id = m->jmethod_id(); |
|
2467 } |
|
2468 } else { |
|
2469 id = m->jmethod_id(); |
|
2470 } |
|
2471 result_list[index] = id; |
|
2472 } |
|
2473 } |
|
2474 // Fill in return value. |
|
2475 *method_count_ptr = result_length; |
|
2476 *methods_ptr = result_list; |
|
2477 |
|
2478 return JVMTI_ERROR_NONE; |
|
2479 } /* end GetClassMethods */ |
|
2480 |
|
2481 |
|
2482 // k_mirror - may be primitive, this must be checked |
|
2483 // field_count_ptr - pre-checked for NULL |
|
2484 // fields_ptr - pre-checked for NULL |
|
2485 jvmtiError |
|
2486 JvmtiEnv::GetClassFields(oop k_mirror, jint* field_count_ptr, jfieldID** fields_ptr) { |
|
2487 if (java_lang_Class::is_primitive(k_mirror)) { |
|
2488 *field_count_ptr = 0; |
|
2489 *fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID)); |
|
2490 return JVMTI_ERROR_NONE; |
|
2491 } |
|
2492 JavaThread* current_thread = JavaThread::current(); |
|
2493 HandleMark hm(current_thread); |
|
2494 Klass* k = java_lang_Class::as_Klass(k_mirror); |
|
2495 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
|
2496 |
|
2497 // Return CLASS_NOT_PREPARED error as per JVMTI spec. |
|
2498 if (!(k->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) { |
|
2499 return JVMTI_ERROR_CLASS_NOT_PREPARED; |
|
2500 } |
|
2501 |
|
2502 if (!k->is_instance_klass()) { |
|
2503 *field_count_ptr = 0; |
|
2504 *fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID)); |
|
2505 return JVMTI_ERROR_NONE; |
|
2506 } |
|
2507 |
|
2508 |
|
2509 InstanceKlass* ik = InstanceKlass::cast(k); |
|
2510 |
|
2511 int result_count = 0; |
|
2512 // First, count the fields. |
|
2513 FilteredFieldStream flds(ik, true, true); |
|
2514 result_count = flds.field_count(); |
|
2515 |
|
2516 // Allocate the result and fill it in |
|
2517 jfieldID* result_list = (jfieldID*) jvmtiMalloc(result_count * sizeof(jfieldID)); |
|
2518 // The JVMTI spec requires fields in the order they occur in the class file, |
|
2519 // this is the reverse order of what FieldStream hands out. |
|
2520 int id_index = (result_count - 1); |
|
2521 |
|
2522 for (FilteredFieldStream src_st(ik, true, true); !src_st.eos(); src_st.next()) { |
|
2523 result_list[id_index--] = jfieldIDWorkaround::to_jfieldID( |
|
2524 ik, src_st.offset(), |
|
2525 src_st.access_flags().is_static()); |
|
2526 } |
|
2527 assert(id_index == -1, "just checking"); |
|
2528 // Fill in the results |
|
2529 *field_count_ptr = result_count; |
|
2530 *fields_ptr = result_list; |
|
2531 |
|
2532 return JVMTI_ERROR_NONE; |
|
2533 } /* end GetClassFields */ |
|
2534 |
|
2535 |
|
2536 // k_mirror - may be primitive, this must be checked |
|
2537 // interface_count_ptr - pre-checked for NULL |
|
2538 // interfaces_ptr - pre-checked for NULL |
|
2539 jvmtiError |
|
2540 JvmtiEnv::GetImplementedInterfaces(oop k_mirror, jint* interface_count_ptr, jclass** interfaces_ptr) { |
|
2541 { |
|
2542 if (java_lang_Class::is_primitive(k_mirror)) { |
|
2543 *interface_count_ptr = 0; |
|
2544 *interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass)); |
|
2545 return JVMTI_ERROR_NONE; |
|
2546 } |
|
2547 JavaThread* current_thread = JavaThread::current(); |
|
2548 HandleMark hm(current_thread); |
|
2549 Klass* k = java_lang_Class::as_Klass(k_mirror); |
|
2550 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
|
2551 |
|
2552 // Return CLASS_NOT_PREPARED error as per JVMTI spec. |
|
2553 if (!(k->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) |
|
2554 return JVMTI_ERROR_CLASS_NOT_PREPARED; |
|
2555 |
|
2556 if (!k->is_instance_klass()) { |
|
2557 *interface_count_ptr = 0; |
|
2558 *interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass)); |
|
2559 return JVMTI_ERROR_NONE; |
|
2560 } |
|
2561 |
|
2562 Array<Klass*>* interface_list = InstanceKlass::cast(k)->local_interfaces(); |
|
2563 const int result_length = (interface_list == NULL ? 0 : interface_list->length()); |
|
2564 jclass* result_list = (jclass*) jvmtiMalloc(result_length * sizeof(jclass)); |
|
2565 for (int i_index = 0; i_index < result_length; i_index += 1) { |
|
2566 Klass* klass_at = interface_list->at(i_index); |
|
2567 assert(klass_at->is_klass(), "interfaces must be Klass*s"); |
|
2568 assert(klass_at->is_interface(), "interfaces must be interfaces"); |
|
2569 oop mirror_at = klass_at->java_mirror(); |
|
2570 Handle handle_at = Handle(current_thread, mirror_at); |
|
2571 result_list[i_index] = (jclass) jni_reference(handle_at); |
|
2572 } |
|
2573 *interface_count_ptr = result_length; |
|
2574 *interfaces_ptr = result_list; |
|
2575 } |
|
2576 |
|
2577 return JVMTI_ERROR_NONE; |
|
2578 } /* end GetImplementedInterfaces */ |
|
2579 |
|
2580 |
|
2581 // k_mirror - may be primitive, this must be checked |
|
2582 // minor_version_ptr - pre-checked for NULL |
|
2583 // major_version_ptr - pre-checked for NULL |
|
2584 jvmtiError |
|
2585 JvmtiEnv::GetClassVersionNumbers(oop k_mirror, jint* minor_version_ptr, jint* major_version_ptr) { |
|
2586 if (java_lang_Class::is_primitive(k_mirror)) { |
|
2587 return JVMTI_ERROR_ABSENT_INFORMATION; |
|
2588 } |
|
2589 Klass* klass = java_lang_Class::as_Klass(k_mirror); |
|
2590 |
|
2591 jint status = klass->jvmti_class_status(); |
|
2592 if (status & (JVMTI_CLASS_STATUS_ERROR)) { |
|
2593 return JVMTI_ERROR_INVALID_CLASS; |
|
2594 } |
|
2595 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { |
|
2596 return JVMTI_ERROR_ABSENT_INFORMATION; |
|
2597 } |
|
2598 |
|
2599 InstanceKlass* ik = InstanceKlass::cast(klass); |
|
2600 *minor_version_ptr = ik->minor_version(); |
|
2601 *major_version_ptr = ik->major_version(); |
|
2602 |
|
2603 return JVMTI_ERROR_NONE; |
|
2604 } /* end GetClassVersionNumbers */ |
|
2605 |
|
2606 |
|
2607 // k_mirror - may be primitive, this must be checked |
|
2608 // constant_pool_count_ptr - pre-checked for NULL |
|
2609 // constant_pool_byte_count_ptr - pre-checked for NULL |
|
2610 // constant_pool_bytes_ptr - pre-checked for NULL |
|
2611 jvmtiError |
|
2612 JvmtiEnv::GetConstantPool(oop k_mirror, jint* constant_pool_count_ptr, jint* constant_pool_byte_count_ptr, unsigned char** constant_pool_bytes_ptr) { |
|
2613 if (java_lang_Class::is_primitive(k_mirror)) { |
|
2614 return JVMTI_ERROR_ABSENT_INFORMATION; |
|
2615 } |
|
2616 |
|
2617 Klass* klass = java_lang_Class::as_Klass(k_mirror); |
|
2618 Thread *thread = Thread::current(); |
|
2619 ResourceMark rm(thread); |
|
2620 |
|
2621 jint status = klass->jvmti_class_status(); |
|
2622 if (status & (JVMTI_CLASS_STATUS_ERROR)) { |
|
2623 return JVMTI_ERROR_INVALID_CLASS; |
|
2624 } |
|
2625 if (status & (JVMTI_CLASS_STATUS_ARRAY)) { |
|
2626 return JVMTI_ERROR_ABSENT_INFORMATION; |
|
2627 } |
|
2628 |
|
2629 InstanceKlass* ik = InstanceKlass::cast(klass); |
|
2630 JvmtiConstantPoolReconstituter reconstituter(ik); |
|
2631 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { |
|
2632 return reconstituter.get_error(); |
|
2633 } |
|
2634 |
|
2635 unsigned char *cpool_bytes; |
|
2636 int cpool_size = reconstituter.cpool_size(); |
|
2637 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { |
|
2638 return reconstituter.get_error(); |
|
2639 } |
|
2640 jvmtiError res = allocate(cpool_size, &cpool_bytes); |
|
2641 if (res != JVMTI_ERROR_NONE) { |
|
2642 return res; |
|
2643 } |
|
2644 reconstituter.copy_cpool_bytes(cpool_bytes); |
|
2645 if (reconstituter.get_error() != JVMTI_ERROR_NONE) { |
|
2646 return reconstituter.get_error(); |
|
2647 } |
|
2648 |
|
2649 constantPoolHandle constants(thread, ik->constants()); |
|
2650 *constant_pool_count_ptr = constants->length(); |
|
2651 *constant_pool_byte_count_ptr = cpool_size; |
|
2652 *constant_pool_bytes_ptr = cpool_bytes; |
|
2653 |
|
2654 return JVMTI_ERROR_NONE; |
|
2655 } /* end GetConstantPool */ |
|
2656 |
|
2657 |
|
2658 // k_mirror - may be primitive, this must be checked |
|
2659 // is_interface_ptr - pre-checked for NULL |
|
2660 jvmtiError |
|
2661 JvmtiEnv::IsInterface(oop k_mirror, jboolean* is_interface_ptr) { |
|
2662 { |
|
2663 bool result = false; |
|
2664 if (!java_lang_Class::is_primitive(k_mirror)) { |
|
2665 Klass* k = java_lang_Class::as_Klass(k_mirror); |
|
2666 if (k != NULL && k->is_interface()) { |
|
2667 result = true; |
|
2668 } |
|
2669 } |
|
2670 *is_interface_ptr = result; |
|
2671 } |
|
2672 |
|
2673 return JVMTI_ERROR_NONE; |
|
2674 } /* end IsInterface */ |
|
2675 |
|
2676 |
|
2677 // k_mirror - may be primitive, this must be checked |
|
2678 // is_array_class_ptr - pre-checked for NULL |
|
2679 jvmtiError |
|
2680 JvmtiEnv::IsArrayClass(oop k_mirror, jboolean* is_array_class_ptr) { |
|
2681 { |
|
2682 bool result = false; |
|
2683 if (!java_lang_Class::is_primitive(k_mirror)) { |
|
2684 Klass* k = java_lang_Class::as_Klass(k_mirror); |
|
2685 if (k != NULL && k->is_array_klass()) { |
|
2686 result = true; |
|
2687 } |
|
2688 } |
|
2689 *is_array_class_ptr = result; |
|
2690 } |
|
2691 |
|
2692 return JVMTI_ERROR_NONE; |
|
2693 } /* end IsArrayClass */ |
|
2694 |
|
2695 |
|
2696 // k_mirror - may be primitive, this must be checked |
|
2697 // classloader_ptr - pre-checked for NULL |
|
2698 jvmtiError |
|
2699 JvmtiEnv::GetClassLoader(oop k_mirror, jobject* classloader_ptr) { |
|
2700 { |
|
2701 if (java_lang_Class::is_primitive(k_mirror)) { |
|
2702 *classloader_ptr = (jclass) jni_reference(Handle()); |
|
2703 return JVMTI_ERROR_NONE; |
|
2704 } |
|
2705 JavaThread* current_thread = JavaThread::current(); |
|
2706 HandleMark hm(current_thread); |
|
2707 Klass* k = java_lang_Class::as_Klass(k_mirror); |
|
2708 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
|
2709 |
|
2710 oop result_oop = k->class_loader(); |
|
2711 if (result_oop == NULL) { |
|
2712 *classloader_ptr = (jclass) jni_reference(Handle()); |
|
2713 return JVMTI_ERROR_NONE; |
|
2714 } |
|
2715 Handle result_handle = Handle(current_thread, result_oop); |
|
2716 jclass result_jnihandle = (jclass) jni_reference(result_handle); |
|
2717 *classloader_ptr = result_jnihandle; |
|
2718 } |
|
2719 return JVMTI_ERROR_NONE; |
|
2720 } /* end GetClassLoader */ |
|
2721 |
|
2722 |
|
2723 // k_mirror - may be primitive, this must be checked |
|
2724 // source_debug_extension_ptr - pre-checked for NULL |
|
2725 jvmtiError |
|
2726 JvmtiEnv::GetSourceDebugExtension(oop k_mirror, char** source_debug_extension_ptr) { |
|
2727 { |
|
2728 if (java_lang_Class::is_primitive(k_mirror)) { |
|
2729 return JVMTI_ERROR_ABSENT_INFORMATION; |
|
2730 } |
|
2731 Klass* k = java_lang_Class::as_Klass(k_mirror); |
|
2732 NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
|
2733 if (!k->is_instance_klass()) { |
|
2734 return JVMTI_ERROR_ABSENT_INFORMATION; |
|
2735 } |
|
2736 const char* sde = InstanceKlass::cast(k)->source_debug_extension(); |
|
2737 NULL_CHECK(sde, JVMTI_ERROR_ABSENT_INFORMATION); |
|
2738 |
|
2739 { |
|
2740 *source_debug_extension_ptr = (char *) jvmtiMalloc(strlen(sde)+1); |
|
2741 strcpy(*source_debug_extension_ptr, sde); |
|
2742 } |
|
2743 } |
|
2744 |
|
2745 return JVMTI_ERROR_NONE; |
|
2746 } /* end GetSourceDebugExtension */ |
|
2747 |
|
2748 // |
|
2749 // Object functions |
|
2750 // |
|
2751 |
|
2752 // hash_code_ptr - pre-checked for NULL |
|
2753 jvmtiError |
|
2754 JvmtiEnv::GetObjectHashCode(jobject object, jint* hash_code_ptr) { |
|
2755 oop mirror = JNIHandles::resolve_external_guard(object); |
|
2756 NULL_CHECK(mirror, JVMTI_ERROR_INVALID_OBJECT); |
|
2757 NULL_CHECK(hash_code_ptr, JVMTI_ERROR_NULL_POINTER); |
|
2758 |
|
2759 { |
|
2760 jint result = (jint) mirror->identity_hash(); |
|
2761 *hash_code_ptr = result; |
|
2762 } |
|
2763 return JVMTI_ERROR_NONE; |
|
2764 } /* end GetObjectHashCode */ |
|
2765 |
|
2766 |
|
2767 // info_ptr - pre-checked for NULL |
|
2768 jvmtiError |
|
2769 JvmtiEnv::GetObjectMonitorUsage(jobject object, jvmtiMonitorUsage* info_ptr) { |
|
2770 JavaThread* calling_thread = JavaThread::current(); |
|
2771 jvmtiError err = get_object_monitor_usage(calling_thread, object, info_ptr); |
|
2772 if (err == JVMTI_ERROR_THREAD_NOT_SUSPENDED) { |
|
2773 // Some of the critical threads were not suspended. go to a safepoint and try again |
|
2774 VM_GetObjectMonitorUsage op(this, calling_thread, object, info_ptr); |
|
2775 VMThread::execute(&op); |
|
2776 err = op.result(); |
|
2777 } |
|
2778 return err; |
|
2779 } /* end GetObjectMonitorUsage */ |
|
2780 |
|
2781 |
|
2782 // |
|
2783 // Field functions |
|
2784 // |
|
2785 |
|
2786 // name_ptr - NULL is a valid value, must be checked |
|
2787 // signature_ptr - NULL is a valid value, must be checked |
|
2788 // generic_ptr - NULL is a valid value, must be checked |
|
2789 jvmtiError |
|
2790 JvmtiEnv::GetFieldName(fieldDescriptor* fdesc_ptr, char** name_ptr, char** signature_ptr, char** generic_ptr) { |
|
2791 JavaThread* current_thread = JavaThread::current(); |
|
2792 ResourceMark rm(current_thread); |
|
2793 if (name_ptr == NULL) { |
|
2794 // just don't return the name |
|
2795 } else { |
|
2796 const char* fieldName = fdesc_ptr->name()->as_C_string(); |
|
2797 *name_ptr = (char*) jvmtiMalloc(strlen(fieldName) + 1); |
|
2798 if (*name_ptr == NULL) |
|
2799 return JVMTI_ERROR_OUT_OF_MEMORY; |
|
2800 strcpy(*name_ptr, fieldName); |
|
2801 } |
|
2802 if (signature_ptr== NULL) { |
|
2803 // just don't return the signature |
|
2804 } else { |
|
2805 const char* fieldSignature = fdesc_ptr->signature()->as_C_string(); |
|
2806 *signature_ptr = (char*) jvmtiMalloc(strlen(fieldSignature) + 1); |
|
2807 if (*signature_ptr == NULL) |
|
2808 return JVMTI_ERROR_OUT_OF_MEMORY; |
|
2809 strcpy(*signature_ptr, fieldSignature); |
|
2810 } |
|
2811 if (generic_ptr != NULL) { |
|
2812 *generic_ptr = NULL; |
|
2813 Symbol* soop = fdesc_ptr->generic_signature(); |
|
2814 if (soop != NULL) { |
|
2815 const char* gen_sig = soop->as_C_string(); |
|
2816 if (gen_sig != NULL) { |
|
2817 jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr); |
|
2818 if (err != JVMTI_ERROR_NONE) { |
|
2819 return err; |
|
2820 } |
|
2821 strcpy(*generic_ptr, gen_sig); |
|
2822 } |
|
2823 } |
|
2824 } |
|
2825 return JVMTI_ERROR_NONE; |
|
2826 } /* end GetFieldName */ |
|
2827 |
|
2828 |
|
2829 // declaring_class_ptr - pre-checked for NULL |
|
2830 jvmtiError |
|
2831 JvmtiEnv::GetFieldDeclaringClass(fieldDescriptor* fdesc_ptr, jclass* declaring_class_ptr) { |
|
2832 |
|
2833 *declaring_class_ptr = get_jni_class_non_null(fdesc_ptr->field_holder()); |
|
2834 return JVMTI_ERROR_NONE; |
|
2835 } /* end GetFieldDeclaringClass */ |
|
2836 |
|
2837 |
|
2838 // modifiers_ptr - pre-checked for NULL |
|
2839 jvmtiError |
|
2840 JvmtiEnv::GetFieldModifiers(fieldDescriptor* fdesc_ptr, jint* modifiers_ptr) { |
|
2841 |
|
2842 AccessFlags resultFlags = fdesc_ptr->access_flags(); |
|
2843 jint result = resultFlags.as_int(); |
|
2844 *modifiers_ptr = result; |
|
2845 |
|
2846 return JVMTI_ERROR_NONE; |
|
2847 } /* end GetFieldModifiers */ |
|
2848 |
|
2849 |
|
2850 // is_synthetic_ptr - pre-checked for NULL |
|
2851 jvmtiError |
|
2852 JvmtiEnv::IsFieldSynthetic(fieldDescriptor* fdesc_ptr, jboolean* is_synthetic_ptr) { |
|
2853 *is_synthetic_ptr = fdesc_ptr->is_synthetic(); |
|
2854 return JVMTI_ERROR_NONE; |
|
2855 } /* end IsFieldSynthetic */ |
|
2856 |
|
2857 |
|
2858 // |
|
2859 // Method functions |
|
2860 // |
|
2861 |
|
2862 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method |
|
2863 // name_ptr - NULL is a valid value, must be checked |
|
2864 // signature_ptr - NULL is a valid value, must be checked |
|
2865 // generic_ptr - NULL is a valid value, must be checked |
|
2866 jvmtiError |
|
2867 JvmtiEnv::GetMethodName(Method* method_oop, char** name_ptr, char** signature_ptr, char** generic_ptr) { |
|
2868 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
|
2869 JavaThread* current_thread = JavaThread::current(); |
|
2870 |
|
2871 ResourceMark rm(current_thread); // get the utf8 name and signature |
|
2872 if (name_ptr == NULL) { |
|
2873 // just don't return the name |
|
2874 } else { |
|
2875 const char* utf8_name = (const char *) method_oop->name()->as_utf8(); |
|
2876 *name_ptr = (char *) jvmtiMalloc(strlen(utf8_name)+1); |
|
2877 strcpy(*name_ptr, utf8_name); |
|
2878 } |
|
2879 if (signature_ptr == NULL) { |
|
2880 // just don't return the signature |
|
2881 } else { |
|
2882 const char* utf8_signature = (const char *) method_oop->signature()->as_utf8(); |
|
2883 *signature_ptr = (char *) jvmtiMalloc(strlen(utf8_signature) + 1); |
|
2884 strcpy(*signature_ptr, utf8_signature); |
|
2885 } |
|
2886 |
|
2887 if (generic_ptr != NULL) { |
|
2888 *generic_ptr = NULL; |
|
2889 Symbol* soop = method_oop->generic_signature(); |
|
2890 if (soop != NULL) { |
|
2891 const char* gen_sig = soop->as_C_string(); |
|
2892 if (gen_sig != NULL) { |
|
2893 jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr); |
|
2894 if (err != JVMTI_ERROR_NONE) { |
|
2895 return err; |
|
2896 } |
|
2897 strcpy(*generic_ptr, gen_sig); |
|
2898 } |
|
2899 } |
|
2900 } |
|
2901 return JVMTI_ERROR_NONE; |
|
2902 } /* end GetMethodName */ |
|
2903 |
|
2904 |
|
2905 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method |
|
2906 // declaring_class_ptr - pre-checked for NULL |
|
2907 jvmtiError |
|
2908 JvmtiEnv::GetMethodDeclaringClass(Method* method_oop, jclass* declaring_class_ptr) { |
|
2909 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
|
2910 (*declaring_class_ptr) = get_jni_class_non_null(method_oop->method_holder()); |
|
2911 return JVMTI_ERROR_NONE; |
|
2912 } /* end GetMethodDeclaringClass */ |
|
2913 |
|
2914 |
|
2915 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method |
|
2916 // modifiers_ptr - pre-checked for NULL |
|
2917 jvmtiError |
|
2918 JvmtiEnv::GetMethodModifiers(Method* method_oop, jint* modifiers_ptr) { |
|
2919 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
|
2920 (*modifiers_ptr) = method_oop->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
|
2921 return JVMTI_ERROR_NONE; |
|
2922 } /* end GetMethodModifiers */ |
|
2923 |
|
2924 |
|
2925 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method |
|
2926 // max_ptr - pre-checked for NULL |
|
2927 jvmtiError |
|
2928 JvmtiEnv::GetMaxLocals(Method* method_oop, jint* max_ptr) { |
|
2929 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
|
2930 // get max stack |
|
2931 (*max_ptr) = method_oop->max_locals(); |
|
2932 return JVMTI_ERROR_NONE; |
|
2933 } /* end GetMaxLocals */ |
|
2934 |
|
2935 |
|
2936 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method |
|
2937 // size_ptr - pre-checked for NULL |
|
2938 jvmtiError |
|
2939 JvmtiEnv::GetArgumentsSize(Method* method_oop, jint* size_ptr) { |
|
2940 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
|
2941 // get size of arguments |
|
2942 |
|
2943 (*size_ptr) = method_oop->size_of_parameters(); |
|
2944 return JVMTI_ERROR_NONE; |
|
2945 } /* end GetArgumentsSize */ |
|
2946 |
|
2947 |
|
2948 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method |
|
2949 // entry_count_ptr - pre-checked for NULL |
|
2950 // table_ptr - pre-checked for NULL |
|
2951 jvmtiError |
|
2952 JvmtiEnv::GetLineNumberTable(Method* method_oop, jint* entry_count_ptr, jvmtiLineNumberEntry** table_ptr) { |
|
2953 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
|
2954 if (!method_oop->has_linenumber_table()) { |
|
2955 return (JVMTI_ERROR_ABSENT_INFORMATION); |
|
2956 } |
|
2957 |
|
2958 // The line number table is compressed so we don't know how big it is until decompressed. |
|
2959 // Decompression is really fast so we just do it twice. |
|
2960 |
|
2961 // Compute size of table |
|
2962 jint num_entries = 0; |
|
2963 CompressedLineNumberReadStream stream(method_oop->compressed_linenumber_table()); |
|
2964 while (stream.read_pair()) { |
|
2965 num_entries++; |
|
2966 } |
|
2967 jvmtiLineNumberEntry *jvmti_table = |
|
2968 (jvmtiLineNumberEntry *)jvmtiMalloc(num_entries * (sizeof(jvmtiLineNumberEntry))); |
|
2969 |
|
2970 // Fill jvmti table |
|
2971 if (num_entries > 0) { |
|
2972 int index = 0; |
|
2973 CompressedLineNumberReadStream stream(method_oop->compressed_linenumber_table()); |
|
2974 while (stream.read_pair()) { |
|
2975 jvmti_table[index].start_location = (jlocation) stream.bci(); |
|
2976 jvmti_table[index].line_number = (jint) stream.line(); |
|
2977 index++; |
|
2978 } |
|
2979 assert(index == num_entries, "sanity check"); |
|
2980 } |
|
2981 |
|
2982 // Set up results |
|
2983 (*entry_count_ptr) = num_entries; |
|
2984 (*table_ptr) = jvmti_table; |
|
2985 |
|
2986 return JVMTI_ERROR_NONE; |
|
2987 } /* end GetLineNumberTable */ |
|
2988 |
|
2989 |
|
2990 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method |
|
2991 // start_location_ptr - pre-checked for NULL |
|
2992 // end_location_ptr - pre-checked for NULL |
|
2993 jvmtiError |
|
2994 JvmtiEnv::GetMethodLocation(Method* method_oop, jlocation* start_location_ptr, jlocation* end_location_ptr) { |
|
2995 |
|
2996 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
|
2997 // get start and end location |
|
2998 (*end_location_ptr) = (jlocation) (method_oop->code_size() - 1); |
|
2999 if (method_oop->code_size() == 0) { |
|
3000 // there is no code so there is no start location |
|
3001 (*start_location_ptr) = (jlocation)(-1); |
|
3002 } else { |
|
3003 (*start_location_ptr) = (jlocation)(0); |
|
3004 } |
|
3005 |
|
3006 return JVMTI_ERROR_NONE; |
|
3007 } /* end GetMethodLocation */ |
|
3008 |
|
3009 |
|
3010 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method |
|
3011 // entry_count_ptr - pre-checked for NULL |
|
3012 // table_ptr - pre-checked for NULL |
|
3013 jvmtiError |
|
3014 JvmtiEnv::GetLocalVariableTable(Method* method_oop, jint* entry_count_ptr, jvmtiLocalVariableEntry** table_ptr) { |
|
3015 |
|
3016 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
|
3017 JavaThread* current_thread = JavaThread::current(); |
|
3018 |
|
3019 // does the klass have any local variable information? |
|
3020 InstanceKlass* ik = method_oop->method_holder(); |
|
3021 if (!ik->access_flags().has_localvariable_table()) { |
|
3022 return (JVMTI_ERROR_ABSENT_INFORMATION); |
|
3023 } |
|
3024 |
|
3025 ConstantPool* constants = method_oop->constants(); |
|
3026 NULL_CHECK(constants, JVMTI_ERROR_ABSENT_INFORMATION); |
|
3027 |
|
3028 // in the vm localvariable table representation, 6 consecutive elements in the table |
|
3029 // represent a 6-tuple of shorts |
|
3030 // [start_pc, length, name_index, descriptor_index, signature_index, index] |
|
3031 jint num_entries = method_oop->localvariable_table_length(); |
|
3032 jvmtiLocalVariableEntry *jvmti_table = (jvmtiLocalVariableEntry *) |
|
3033 jvmtiMalloc(num_entries * (sizeof(jvmtiLocalVariableEntry))); |
|
3034 |
|
3035 if (num_entries > 0) { |
|
3036 LocalVariableTableElement* table = method_oop->localvariable_table_start(); |
|
3037 for (int i = 0; i < num_entries; i++) { |
|
3038 // get the 5 tuple information from the vm table |
|
3039 jlocation start_location = (jlocation) table[i].start_bci; |
|
3040 jint length = (jint) table[i].length; |
|
3041 int name_index = (int) table[i].name_cp_index; |
|
3042 int signature_index = (int) table[i].descriptor_cp_index; |
|
3043 int generic_signature_index = (int) table[i].signature_cp_index; |
|
3044 jint slot = (jint) table[i].slot; |
|
3045 |
|
3046 // get utf8 name and signature |
|
3047 char *name_buf = NULL; |
|
3048 char *sig_buf = NULL; |
|
3049 char *gen_sig_buf = NULL; |
|
3050 { |
|
3051 ResourceMark rm(current_thread); |
|
3052 |
|
3053 const char *utf8_name = (const char *) constants->symbol_at(name_index)->as_utf8(); |
|
3054 name_buf = (char *) jvmtiMalloc(strlen(utf8_name)+1); |
|
3055 strcpy(name_buf, utf8_name); |
|
3056 |
|
3057 const char *utf8_signature = (const char *) constants->symbol_at(signature_index)->as_utf8(); |
|
3058 sig_buf = (char *) jvmtiMalloc(strlen(utf8_signature)+1); |
|
3059 strcpy(sig_buf, utf8_signature); |
|
3060 |
|
3061 if (generic_signature_index > 0) { |
|
3062 const char *utf8_gen_sign = (const char *) |
|
3063 constants->symbol_at(generic_signature_index)->as_utf8(); |
|
3064 gen_sig_buf = (char *) jvmtiMalloc(strlen(utf8_gen_sign)+1); |
|
3065 strcpy(gen_sig_buf, utf8_gen_sign); |
|
3066 } |
|
3067 } |
|
3068 |
|
3069 // fill in the jvmti local variable table |
|
3070 jvmti_table[i].start_location = start_location; |
|
3071 jvmti_table[i].length = length; |
|
3072 jvmti_table[i].name = name_buf; |
|
3073 jvmti_table[i].signature = sig_buf; |
|
3074 jvmti_table[i].generic_signature = gen_sig_buf; |
|
3075 jvmti_table[i].slot = slot; |
|
3076 } |
|
3077 } |
|
3078 |
|
3079 // set results |
|
3080 (*entry_count_ptr) = num_entries; |
|
3081 (*table_ptr) = jvmti_table; |
|
3082 |
|
3083 return JVMTI_ERROR_NONE; |
|
3084 } /* end GetLocalVariableTable */ |
|
3085 |
|
3086 |
|
3087 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method |
|
3088 // bytecode_count_ptr - pre-checked for NULL |
|
3089 // bytecodes_ptr - pre-checked for NULL |
|
3090 jvmtiError |
|
3091 JvmtiEnv::GetBytecodes(Method* method_oop, jint* bytecode_count_ptr, unsigned char** bytecodes_ptr) { |
|
3092 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
|
3093 |
|
3094 HandleMark hm; |
|
3095 methodHandle method(method_oop); |
|
3096 jint size = (jint)method->code_size(); |
|
3097 jvmtiError err = allocate(size, bytecodes_ptr); |
|
3098 if (err != JVMTI_ERROR_NONE) { |
|
3099 return err; |
|
3100 } |
|
3101 |
|
3102 (*bytecode_count_ptr) = size; |
|
3103 // get byte codes |
|
3104 JvmtiClassFileReconstituter::copy_bytecodes(method, *bytecodes_ptr); |
|
3105 |
|
3106 return JVMTI_ERROR_NONE; |
|
3107 } /* end GetBytecodes */ |
|
3108 |
|
3109 |
|
3110 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method |
|
3111 // is_native_ptr - pre-checked for NULL |
|
3112 jvmtiError |
|
3113 JvmtiEnv::IsMethodNative(Method* method_oop, jboolean* is_native_ptr) { |
|
3114 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
|
3115 (*is_native_ptr) = method_oop->is_native(); |
|
3116 return JVMTI_ERROR_NONE; |
|
3117 } /* end IsMethodNative */ |
|
3118 |
|
3119 |
|
3120 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method |
|
3121 // is_synthetic_ptr - pre-checked for NULL |
|
3122 jvmtiError |
|
3123 JvmtiEnv::IsMethodSynthetic(Method* method_oop, jboolean* is_synthetic_ptr) { |
|
3124 NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID); |
|
3125 (*is_synthetic_ptr) = method_oop->is_synthetic(); |
|
3126 return JVMTI_ERROR_NONE; |
|
3127 } /* end IsMethodSynthetic */ |
|
3128 |
|
3129 |
|
3130 // method_oop - pre-checked for validity, but may be NULL meaning obsolete method |
|
3131 // is_obsolete_ptr - pre-checked for NULL |
|
3132 jvmtiError |
|
3133 JvmtiEnv::IsMethodObsolete(Method* method_oop, jboolean* is_obsolete_ptr) { |
|
3134 if (use_version_1_0_semantics() && |
|
3135 get_capabilities()->can_redefine_classes == 0) { |
|
3136 // This JvmtiEnv requested version 1.0 semantics and this function |
|
3137 // requires the can_redefine_classes capability in version 1.0 so |
|
3138 // we need to return an error here. |
|
3139 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; |
|
3140 } |
|
3141 |
|
3142 if (method_oop == NULL || method_oop->is_obsolete()) { |
|
3143 *is_obsolete_ptr = true; |
|
3144 } else { |
|
3145 *is_obsolete_ptr = false; |
|
3146 } |
|
3147 return JVMTI_ERROR_NONE; |
|
3148 } /* end IsMethodObsolete */ |
|
3149 |
|
3150 // |
|
3151 // Raw Monitor functions |
|
3152 // |
|
3153 |
|
3154 // name - pre-checked for NULL |
|
3155 // monitor_ptr - pre-checked for NULL |
|
3156 jvmtiError |
|
3157 JvmtiEnv::CreateRawMonitor(const char* name, jrawMonitorID* monitor_ptr) { |
|
3158 JvmtiRawMonitor* rmonitor = new JvmtiRawMonitor(name); |
|
3159 NULL_CHECK(rmonitor, JVMTI_ERROR_OUT_OF_MEMORY); |
|
3160 |
|
3161 *monitor_ptr = (jrawMonitorID)rmonitor; |
|
3162 |
|
3163 return JVMTI_ERROR_NONE; |
|
3164 } /* end CreateRawMonitor */ |
|
3165 |
|
3166 |
|
3167 // rmonitor - pre-checked for validity |
|
3168 jvmtiError |
|
3169 JvmtiEnv::DestroyRawMonitor(JvmtiRawMonitor * rmonitor) { |
|
3170 if (Threads::number_of_threads() == 0) { |
|
3171 // Remove this monitor from pending raw monitors list |
|
3172 // if it has entered in onload or start phase. |
|
3173 JvmtiPendingMonitors::destroy(rmonitor); |
|
3174 } else { |
|
3175 Thread* thread = Thread::current(); |
|
3176 if (rmonitor->is_entered(thread)) { |
|
3177 // The caller owns this monitor which we are about to destroy. |
|
3178 // We exit the underlying synchronization object so that the |
|
3179 // "delete monitor" call below can work without an assertion |
|
3180 // failure on systems that don't like destroying synchronization |
|
3181 // objects that are locked. |
|
3182 int r; |
|
3183 intptr_t recursion = rmonitor->recursions(); |
|
3184 for (intptr_t i=0; i <= recursion; i++) { |
|
3185 r = rmonitor->raw_exit(thread); |
|
3186 assert(r == ObjectMonitor::OM_OK, "raw_exit should have worked"); |
|
3187 if (r != ObjectMonitor::OM_OK) { // robustness |
|
3188 return JVMTI_ERROR_INTERNAL; |
|
3189 } |
|
3190 } |
|
3191 } |
|
3192 if (rmonitor->owner() != NULL) { |
|
3193 // The caller is trying to destroy a monitor that is locked by |
|
3194 // someone else. While this is not forbidden by the JVMTI |
|
3195 // spec, it will cause an assertion failure on systems that don't |
|
3196 // like destroying synchronization objects that are locked. |
|
3197 // We indicate a problem with the error return (and leak the |
|
3198 // monitor's memory). |
|
3199 return JVMTI_ERROR_NOT_MONITOR_OWNER; |
|
3200 } |
|
3201 } |
|
3202 |
|
3203 delete rmonitor; |
|
3204 |
|
3205 return JVMTI_ERROR_NONE; |
|
3206 } /* end DestroyRawMonitor */ |
|
3207 |
|
3208 |
|
3209 // rmonitor - pre-checked for validity |
|
3210 jvmtiError |
|
3211 JvmtiEnv::RawMonitorEnter(JvmtiRawMonitor * rmonitor) { |
|
3212 if (Threads::number_of_threads() == 0) { |
|
3213 // No JavaThreads exist so ObjectMonitor enter cannot be |
|
3214 // used, add this raw monitor to the pending list. |
|
3215 // The pending monitors will be actually entered when |
|
3216 // the VM is setup. |
|
3217 // See transition_pending_raw_monitors in create_vm() |
|
3218 // in thread.cpp. |
|
3219 JvmtiPendingMonitors::enter(rmonitor); |
|
3220 } else { |
|
3221 int r = 0; |
|
3222 Thread* thread = Thread::current(); |
|
3223 |
|
3224 if (thread->is_Java_thread()) { |
|
3225 JavaThread* current_thread = (JavaThread*)thread; |
|
3226 |
|
3227 #ifdef PROPER_TRANSITIONS |
|
3228 // Not really unknown but ThreadInVMfromNative does more than we want |
|
3229 ThreadInVMfromUnknown __tiv; |
|
3230 { |
|
3231 ThreadBlockInVM __tbivm(current_thread); |
|
3232 r = rmonitor->raw_enter(current_thread); |
|
3233 } |
|
3234 #else |
|
3235 /* Transition to thread_blocked without entering vm state */ |
|
3236 /* This is really evil. Normally you can't undo _thread_blocked */ |
|
3237 /* transitions like this because it would cause us to miss a */ |
|
3238 /* safepoint but since the thread was already in _thread_in_native */ |
|
3239 /* the thread is not leaving a safepoint safe state and it will */ |
|
3240 /* block when it tries to return from native. We can't safepoint */ |
|
3241 /* block in here because we could deadlock the vmthread. Blech. */ |
|
3242 |
|
3243 JavaThreadState state = current_thread->thread_state(); |
|
3244 assert(state == _thread_in_native, "Must be _thread_in_native"); |
|
3245 // frame should already be walkable since we are in native |
|
3246 assert(!current_thread->has_last_Java_frame() || |
|
3247 current_thread->frame_anchor()->walkable(), "Must be walkable"); |
|
3248 current_thread->set_thread_state(_thread_blocked); |
|
3249 |
|
3250 r = rmonitor->raw_enter(current_thread); |
|
3251 // restore state, still at a safepoint safe state |
|
3252 current_thread->set_thread_state(state); |
|
3253 |
|
3254 #endif /* PROPER_TRANSITIONS */ |
|
3255 assert(r == ObjectMonitor::OM_OK, "raw_enter should have worked"); |
|
3256 } else { |
|
3257 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { |
|
3258 r = rmonitor->raw_enter(thread); |
|
3259 } else { |
|
3260 ShouldNotReachHere(); |
|
3261 } |
|
3262 } |
|
3263 |
|
3264 if (r != ObjectMonitor::OM_OK) { // robustness |
|
3265 return JVMTI_ERROR_INTERNAL; |
|
3266 } |
|
3267 } |
|
3268 return JVMTI_ERROR_NONE; |
|
3269 } /* end RawMonitorEnter */ |
|
3270 |
|
3271 |
|
3272 // rmonitor - pre-checked for validity |
|
3273 jvmtiError |
|
3274 JvmtiEnv::RawMonitorExit(JvmtiRawMonitor * rmonitor) { |
|
3275 jvmtiError err = JVMTI_ERROR_NONE; |
|
3276 |
|
3277 if (Threads::number_of_threads() == 0) { |
|
3278 // No JavaThreads exist so just remove this monitor from the pending list. |
|
3279 // Bool value from exit is false if rmonitor is not in the list. |
|
3280 if (!JvmtiPendingMonitors::exit(rmonitor)) { |
|
3281 err = JVMTI_ERROR_NOT_MONITOR_OWNER; |
|
3282 } |
|
3283 } else { |
|
3284 int r = 0; |
|
3285 Thread* thread = Thread::current(); |
|
3286 |
|
3287 if (thread->is_Java_thread()) { |
|
3288 JavaThread* current_thread = (JavaThread*)thread; |
|
3289 #ifdef PROPER_TRANSITIONS |
|
3290 // Not really unknown but ThreadInVMfromNative does more than we want |
|
3291 ThreadInVMfromUnknown __tiv; |
|
3292 #endif /* PROPER_TRANSITIONS */ |
|
3293 r = rmonitor->raw_exit(current_thread); |
|
3294 } else { |
|
3295 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { |
|
3296 r = rmonitor->raw_exit(thread); |
|
3297 } else { |
|
3298 ShouldNotReachHere(); |
|
3299 } |
|
3300 } |
|
3301 |
|
3302 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { |
|
3303 err = JVMTI_ERROR_NOT_MONITOR_OWNER; |
|
3304 } else { |
|
3305 assert(r == ObjectMonitor::OM_OK, "raw_exit should have worked"); |
|
3306 if (r != ObjectMonitor::OM_OK) { // robustness |
|
3307 err = JVMTI_ERROR_INTERNAL; |
|
3308 } |
|
3309 } |
|
3310 } |
|
3311 return err; |
|
3312 } /* end RawMonitorExit */ |
|
3313 |
|
3314 |
|
3315 // rmonitor - pre-checked for validity |
|
3316 jvmtiError |
|
3317 JvmtiEnv::RawMonitorWait(JvmtiRawMonitor * rmonitor, jlong millis) { |
|
3318 int r = 0; |
|
3319 Thread* thread = Thread::current(); |
|
3320 |
|
3321 if (thread->is_Java_thread()) { |
|
3322 JavaThread* current_thread = (JavaThread*)thread; |
|
3323 #ifdef PROPER_TRANSITIONS |
|
3324 // Not really unknown but ThreadInVMfromNative does more than we want |
|
3325 ThreadInVMfromUnknown __tiv; |
|
3326 { |
|
3327 ThreadBlockInVM __tbivm(current_thread); |
|
3328 r = rmonitor->raw_wait(millis, true, current_thread); |
|
3329 } |
|
3330 #else |
|
3331 /* Transition to thread_blocked without entering vm state */ |
|
3332 /* This is really evil. Normally you can't undo _thread_blocked */ |
|
3333 /* transitions like this because it would cause us to miss a */ |
|
3334 /* safepoint but since the thread was already in _thread_in_native */ |
|
3335 /* the thread is not leaving a safepoint safe state and it will */ |
|
3336 /* block when it tries to return from native. We can't safepoint */ |
|
3337 /* block in here because we could deadlock the vmthread. Blech. */ |
|
3338 |
|
3339 JavaThreadState state = current_thread->thread_state(); |
|
3340 assert(state == _thread_in_native, "Must be _thread_in_native"); |
|
3341 // frame should already be walkable since we are in native |
|
3342 assert(!current_thread->has_last_Java_frame() || |
|
3343 current_thread->frame_anchor()->walkable(), "Must be walkable"); |
|
3344 current_thread->set_thread_state(_thread_blocked); |
|
3345 |
|
3346 r = rmonitor->raw_wait(millis, true, current_thread); |
|
3347 // restore state, still at a safepoint safe state |
|
3348 current_thread->set_thread_state(state); |
|
3349 |
|
3350 #endif /* PROPER_TRANSITIONS */ |
|
3351 } else { |
|
3352 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { |
|
3353 r = rmonitor->raw_wait(millis, true, thread); |
|
3354 } else { |
|
3355 ShouldNotReachHere(); |
|
3356 } |
|
3357 } |
|
3358 |
|
3359 switch (r) { |
|
3360 case ObjectMonitor::OM_INTERRUPTED: |
|
3361 return JVMTI_ERROR_INTERRUPT; |
|
3362 case ObjectMonitor::OM_ILLEGAL_MONITOR_STATE: |
|
3363 return JVMTI_ERROR_NOT_MONITOR_OWNER; |
|
3364 } |
|
3365 assert(r == ObjectMonitor::OM_OK, "raw_wait should have worked"); |
|
3366 if (r != ObjectMonitor::OM_OK) { // robustness |
|
3367 return JVMTI_ERROR_INTERNAL; |
|
3368 } |
|
3369 |
|
3370 return JVMTI_ERROR_NONE; |
|
3371 } /* end RawMonitorWait */ |
|
3372 |
|
3373 |
|
3374 // rmonitor - pre-checked for validity |
|
3375 jvmtiError |
|
3376 JvmtiEnv::RawMonitorNotify(JvmtiRawMonitor * rmonitor) { |
|
3377 int r = 0; |
|
3378 Thread* thread = Thread::current(); |
|
3379 |
|
3380 if (thread->is_Java_thread()) { |
|
3381 JavaThread* current_thread = (JavaThread*)thread; |
|
3382 // Not really unknown but ThreadInVMfromNative does more than we want |
|
3383 ThreadInVMfromUnknown __tiv; |
|
3384 r = rmonitor->raw_notify(current_thread); |
|
3385 } else { |
|
3386 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { |
|
3387 r = rmonitor->raw_notify(thread); |
|
3388 } else { |
|
3389 ShouldNotReachHere(); |
|
3390 } |
|
3391 } |
|
3392 |
|
3393 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { |
|
3394 return JVMTI_ERROR_NOT_MONITOR_OWNER; |
|
3395 } |
|
3396 assert(r == ObjectMonitor::OM_OK, "raw_notify should have worked"); |
|
3397 if (r != ObjectMonitor::OM_OK) { // robustness |
|
3398 return JVMTI_ERROR_INTERNAL; |
|
3399 } |
|
3400 |
|
3401 return JVMTI_ERROR_NONE; |
|
3402 } /* end RawMonitorNotify */ |
|
3403 |
|
3404 |
|
3405 // rmonitor - pre-checked for validity |
|
3406 jvmtiError |
|
3407 JvmtiEnv::RawMonitorNotifyAll(JvmtiRawMonitor * rmonitor) { |
|
3408 int r = 0; |
|
3409 Thread* thread = Thread::current(); |
|
3410 |
|
3411 if (thread->is_Java_thread()) { |
|
3412 JavaThread* current_thread = (JavaThread*)thread; |
|
3413 ThreadInVMfromUnknown __tiv; |
|
3414 r = rmonitor->raw_notifyAll(current_thread); |
|
3415 } else { |
|
3416 if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) { |
|
3417 r = rmonitor->raw_notifyAll(thread); |
|
3418 } else { |
|
3419 ShouldNotReachHere(); |
|
3420 } |
|
3421 } |
|
3422 |
|
3423 if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) { |
|
3424 return JVMTI_ERROR_NOT_MONITOR_OWNER; |
|
3425 } |
|
3426 assert(r == ObjectMonitor::OM_OK, "raw_notifyAll should have worked"); |
|
3427 if (r != ObjectMonitor::OM_OK) { // robustness |
|
3428 return JVMTI_ERROR_INTERNAL; |
|
3429 } |
|
3430 |
|
3431 return JVMTI_ERROR_NONE; |
|
3432 } /* end RawMonitorNotifyAll */ |
|
3433 |
|
3434 |
|
3435 // |
|
3436 // JNI Function Interception functions |
|
3437 // |
|
3438 |
|
3439 |
|
3440 // function_table - pre-checked for NULL |
|
3441 jvmtiError |
|
3442 JvmtiEnv::SetJNIFunctionTable(const jniNativeInterface* function_table) { |
|
3443 // Copy jni function table at safepoint. |
|
3444 VM_JNIFunctionTableCopier copier(function_table); |
|
3445 VMThread::execute(&copier); |
|
3446 |
|
3447 return JVMTI_ERROR_NONE; |
|
3448 } /* end SetJNIFunctionTable */ |
|
3449 |
|
3450 |
|
3451 // function_table - pre-checked for NULL |
|
3452 jvmtiError |
|
3453 JvmtiEnv::GetJNIFunctionTable(jniNativeInterface** function_table) { |
|
3454 *function_table=(jniNativeInterface*)jvmtiMalloc(sizeof(jniNativeInterface)); |
|
3455 if (*function_table == NULL) |
|
3456 return JVMTI_ERROR_OUT_OF_MEMORY; |
|
3457 memcpy(*function_table,(JavaThread::current())->get_jni_functions(),sizeof(jniNativeInterface)); |
|
3458 return JVMTI_ERROR_NONE; |
|
3459 } /* end GetJNIFunctionTable */ |
|
3460 |
|
3461 |
|
3462 // |
|
3463 // Event Management functions |
|
3464 // |
|
3465 |
|
3466 jvmtiError |
|
3467 JvmtiEnv::GenerateEvents(jvmtiEvent event_type) { |
|
3468 // can only generate two event types |
|
3469 if (event_type != JVMTI_EVENT_COMPILED_METHOD_LOAD && |
|
3470 event_type != JVMTI_EVENT_DYNAMIC_CODE_GENERATED) { |
|
3471 return JVMTI_ERROR_ILLEGAL_ARGUMENT; |
|
3472 } |
|
3473 |
|
3474 // for compiled_method_load events we must check that the environment |
|
3475 // has the can_generate_compiled_method_load_events capability. |
|
3476 if (event_type == JVMTI_EVENT_COMPILED_METHOD_LOAD) { |
|
3477 if (get_capabilities()->can_generate_compiled_method_load_events == 0) { |
|
3478 return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; |
|
3479 } |
|
3480 return JvmtiCodeBlobEvents::generate_compiled_method_load_events(this); |
|
3481 } else { |
|
3482 return JvmtiCodeBlobEvents::generate_dynamic_code_events(this); |
|
3483 } |
|
3484 |
|
3485 } /* end GenerateEvents */ |
|
3486 |
|
3487 |
|
3488 // |
|
3489 // Extension Mechanism functions |
|
3490 // |
|
3491 |
|
3492 // extension_count_ptr - pre-checked for NULL |
|
3493 // extensions - pre-checked for NULL |
|
3494 jvmtiError |
|
3495 JvmtiEnv::GetExtensionFunctions(jint* extension_count_ptr, jvmtiExtensionFunctionInfo** extensions) { |
|
3496 return JvmtiExtensions::get_functions(this, extension_count_ptr, extensions); |
|
3497 } /* end GetExtensionFunctions */ |
|
3498 |
|
3499 |
|
3500 // extension_count_ptr - pre-checked for NULL |
|
3501 // extensions - pre-checked for NULL |
|
3502 jvmtiError |
|
3503 JvmtiEnv::GetExtensionEvents(jint* extension_count_ptr, jvmtiExtensionEventInfo** extensions) { |
|
3504 return JvmtiExtensions::get_events(this, extension_count_ptr, extensions); |
|
3505 } /* end GetExtensionEvents */ |
|
3506 |
|
3507 |
|
3508 // callback - NULL is a valid value, must be checked |
|
3509 jvmtiError |
|
3510 JvmtiEnv::SetExtensionEventCallback(jint extension_event_index, jvmtiExtensionEvent callback) { |
|
3511 return JvmtiExtensions::set_event_callback(this, extension_event_index, callback); |
|
3512 } /* end SetExtensionEventCallback */ |
|
3513 |
|
3514 // |
|
3515 // Timers functions |
|
3516 // |
|
3517 |
|
3518 // info_ptr - pre-checked for NULL |
|
3519 jvmtiError |
|
3520 JvmtiEnv::GetCurrentThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) { |
|
3521 os::current_thread_cpu_time_info(info_ptr); |
|
3522 return JVMTI_ERROR_NONE; |
|
3523 } /* end GetCurrentThreadCpuTimerInfo */ |
|
3524 |
|
3525 |
|
3526 // nanos_ptr - pre-checked for NULL |
|
3527 jvmtiError |
|
3528 JvmtiEnv::GetCurrentThreadCpuTime(jlong* nanos_ptr) { |
|
3529 *nanos_ptr = os::current_thread_cpu_time(); |
|
3530 return JVMTI_ERROR_NONE; |
|
3531 } /* end GetCurrentThreadCpuTime */ |
|
3532 |
|
3533 |
|
3534 // info_ptr - pre-checked for NULL |
|
3535 jvmtiError |
|
3536 JvmtiEnv::GetThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) { |
|
3537 os::thread_cpu_time_info(info_ptr); |
|
3538 return JVMTI_ERROR_NONE; |
|
3539 } /* end GetThreadCpuTimerInfo */ |
|
3540 |
|
3541 |
|
3542 // Threads_lock NOT held, java_thread not protected by lock |
|
3543 // java_thread - pre-checked |
|
3544 // nanos_ptr - pre-checked for NULL |
|
3545 jvmtiError |
|
3546 JvmtiEnv::GetThreadCpuTime(JavaThread* java_thread, jlong* nanos_ptr) { |
|
3547 *nanos_ptr = os::thread_cpu_time(java_thread); |
|
3548 return JVMTI_ERROR_NONE; |
|
3549 } /* end GetThreadCpuTime */ |
|
3550 |
|
3551 |
|
3552 // info_ptr - pre-checked for NULL |
|
3553 jvmtiError |
|
3554 JvmtiEnv::GetTimerInfo(jvmtiTimerInfo* info_ptr) { |
|
3555 os::javaTimeNanos_info(info_ptr); |
|
3556 return JVMTI_ERROR_NONE; |
|
3557 } /* end GetTimerInfo */ |
|
3558 |
|
3559 |
|
3560 // nanos_ptr - pre-checked for NULL |
|
3561 jvmtiError |
|
3562 JvmtiEnv::GetTime(jlong* nanos_ptr) { |
|
3563 *nanos_ptr = os::javaTimeNanos(); |
|
3564 return JVMTI_ERROR_NONE; |
|
3565 } /* end GetTime */ |
|
3566 |
|
3567 |
|
3568 // processor_count_ptr - pre-checked for NULL |
|
3569 jvmtiError |
|
3570 JvmtiEnv::GetAvailableProcessors(jint* processor_count_ptr) { |
|
3571 *processor_count_ptr = os::active_processor_count(); |
|
3572 return JVMTI_ERROR_NONE; |
|
3573 } /* end GetAvailableProcessors */ |
|
3574 |
|
3575 // |
|
3576 // System Properties functions |
|
3577 // |
|
3578 |
|
3579 // count_ptr - pre-checked for NULL |
|
3580 // property_ptr - pre-checked for NULL |
|
3581 jvmtiError |
|
3582 JvmtiEnv::GetSystemProperties(jint* count_ptr, char*** property_ptr) { |
|
3583 jvmtiError err = JVMTI_ERROR_NONE; |
|
3584 |
|
3585 // Get the number of readable properties. |
|
3586 *count_ptr = Arguments::PropertyList_readable_count(Arguments::system_properties()); |
|
3587 |
|
3588 // Allocate memory to hold the exact number of readable properties. |
|
3589 err = allocate(*count_ptr * sizeof(char *), (unsigned char **)property_ptr); |
|
3590 if (err != JVMTI_ERROR_NONE) { |
|
3591 return err; |
|
3592 } |
|
3593 int readable_count = 0; |
|
3594 // Loop through the system properties until all the readable properties are found. |
|
3595 for (SystemProperty* p = Arguments::system_properties(); p != NULL && readable_count < *count_ptr; p = p->next()) { |
|
3596 if (p->is_readable()) { |
|
3597 const char *key = p->key(); |
|
3598 char **tmp_value = *property_ptr+readable_count; |
|
3599 readable_count++; |
|
3600 err = allocate((strlen(key)+1) * sizeof(char), (unsigned char**)tmp_value); |
|
3601 if (err == JVMTI_ERROR_NONE) { |
|
3602 strcpy(*tmp_value, key); |
|
3603 } else { |
|
3604 // clean up previously allocated memory. |
|
3605 for (int j=0; j<readable_count; j++) { |
|
3606 Deallocate((unsigned char*)*property_ptr+j); |
|
3607 } |
|
3608 Deallocate((unsigned char*)property_ptr); |
|
3609 break; |
|
3610 } |
|
3611 } |
|
3612 } |
|
3613 assert(err != JVMTI_ERROR_NONE || readable_count == *count_ptr, "Bad readable property count"); |
|
3614 return err; |
|
3615 } /* end GetSystemProperties */ |
|
3616 |
|
3617 |
|
3618 // property - pre-checked for NULL |
|
3619 // value_ptr - pre-checked for NULL |
|
3620 jvmtiError |
|
3621 JvmtiEnv::GetSystemProperty(const char* property, char** value_ptr) { |
|
3622 jvmtiError err = JVMTI_ERROR_NONE; |
|
3623 const char *value; |
|
3624 |
|
3625 // Return JVMTI_ERROR_NOT_AVAILABLE if property is not readable or doesn't exist. |
|
3626 value = Arguments::PropertyList_get_readable_value(Arguments::system_properties(), property); |
|
3627 if (value == NULL) { |
|
3628 err = JVMTI_ERROR_NOT_AVAILABLE; |
|
3629 } else { |
|
3630 err = allocate((strlen(value)+1) * sizeof(char), (unsigned char **)value_ptr); |
|
3631 if (err == JVMTI_ERROR_NONE) { |
|
3632 strcpy(*value_ptr, value); |
|
3633 } |
|
3634 } |
|
3635 return err; |
|
3636 } /* end GetSystemProperty */ |
|
3637 |
|
3638 |
|
3639 // property - pre-checked for NULL |
|
3640 // value - NULL is a valid value, must be checked |
|
3641 jvmtiError |
|
3642 JvmtiEnv::SetSystemProperty(const char* property, const char* value_ptr) { |
|
3643 jvmtiError err =JVMTI_ERROR_NOT_AVAILABLE; |
|
3644 |
|
3645 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { |
|
3646 if (strcmp(property, p->key()) == 0) { |
|
3647 if (p->set_writeable_value(value_ptr)) { |
|
3648 err = JVMTI_ERROR_NONE; |
|
3649 } |
|
3650 } |
|
3651 } |
|
3652 return err; |
|
3653 } /* end SetSystemProperty */ |