Mercurial > hg > truffle
annotate src/share/vm/prims/jvm.cpp @ 1059:389049f3f393
6858164: invokedynamic code needs some cleanup (post-6655638)
Summary: Fix several crashers, remove needless paths for boxed-style bootstrap method call, refactor & simplify APIs for rewriter constantPoolOop, remove sun.dyn.CallSiteImpl
Reviewed-by: kvn
author | jrose |
---|---|
date | Fri, 30 Oct 2009 16:22:59 -0700 |
parents | ad6585fd4087 |
children | 933a3e806ce6 4ce7240d622c |
rev | line source |
---|---|
0 | 1 /* |
579 | 2 * Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 #include "incls/_precompiled.incl" | |
26 #include "incls/_jvm.cpp.incl" | |
27 #include <errno.h> | |
28 | |
29 /* | |
30 NOTE about use of any ctor or function call that can trigger a safepoint/GC: | |
31 such ctors and calls MUST NOT come between an oop declaration/init and its | |
32 usage because if objects are move this may cause various memory stomps, bus | |
33 errors and segfaults. Here is a cookbook for causing so called "naked oop | |
34 failures": | |
35 | |
36 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> { | |
37 JVMWrapper("JVM_GetClassDeclaredFields"); | |
38 | |
39 // Object address to be held directly in mirror & not visible to GC | |
40 oop mirror = JNIHandles::resolve_non_null(ofClass); | |
41 | |
42 // If this ctor can hit a safepoint, moving objects around, then | |
43 ComplexConstructor foo; | |
44 | |
45 // Boom! mirror may point to JUNK instead of the intended object | |
46 (some dereference of mirror) | |
47 | |
48 // Here's another call that may block for GC, making mirror stale | |
49 MutexLocker ml(some_lock); | |
50 | |
51 // And here's an initializer that can result in a stale oop | |
52 // all in one step. | |
53 oop o = call_that_can_throw_exception(TRAPS); | |
54 | |
55 | |
56 The solution is to keep the oop declaration BELOW the ctor or function | |
57 call that might cause a GC, do another resolve to reassign the oop, or | |
58 consider use of a Handle instead of an oop so there is immunity from object | |
59 motion. But note that the "QUICK" entries below do not have a handlemark | |
60 and thus can only support use of handles passed in. | |
61 */ | |
62 | |
63 static void trace_class_resolution_impl(klassOop to_class, TRAPS) { | |
64 ResourceMark rm; | |
65 int line_number = -1; | |
66 const char * source_file = NULL; | |
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
67 const char * trace = "explicit"; |
0 | 68 klassOop caller = NULL; |
69 JavaThread* jthread = JavaThread::current(); | |
70 if (jthread->has_last_Java_frame()) { | |
71 vframeStream vfst(jthread); | |
72 | |
73 // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames | |
74 symbolHandle access_controller = oopFactory::new_symbol_handle("java/security/AccessController", CHECK); | |
75 klassOop access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); | |
76 symbolHandle privileged_action = oopFactory::new_symbol_handle("java/security/PrivilegedAction", CHECK); | |
77 klassOop privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); | |
78 | |
79 methodOop last_caller = NULL; | |
80 | |
81 while (!vfst.at_end()) { | |
82 methodOop m = vfst.method(); | |
83 if (!vfst.method()->method_holder()->klass_part()->is_subclass_of(SystemDictionary::classloader_klass())&& | |
84 !vfst.method()->method_holder()->klass_part()->is_subclass_of(access_controller_klass) && | |
85 !vfst.method()->method_holder()->klass_part()->is_subclass_of(privileged_action_klass)) { | |
86 break; | |
87 } | |
88 last_caller = m; | |
89 vfst.next(); | |
90 } | |
91 // if this is called from Class.forName0 and that is called from Class.forName, | |
92 // then print the caller of Class.forName. If this is Class.loadClass, then print | |
93 // that caller, otherwise keep quiet since this should be picked up elsewhere. | |
94 bool found_it = false; | |
95 if (!vfst.at_end() && | |
96 instanceKlass::cast(vfst.method()->method_holder())->name() == vmSymbols::java_lang_Class() && | |
97 vfst.method()->name() == vmSymbols::forName0_name()) { | |
98 vfst.next(); | |
99 if (!vfst.at_end() && | |
100 instanceKlass::cast(vfst.method()->method_holder())->name() == vmSymbols::java_lang_Class() && | |
101 vfst.method()->name() == vmSymbols::forName_name()) { | |
102 vfst.next(); | |
103 found_it = true; | |
104 } | |
105 } else if (last_caller != NULL && | |
106 instanceKlass::cast(last_caller->method_holder())->name() == | |
107 vmSymbols::java_lang_ClassLoader() && | |
108 (last_caller->name() == vmSymbols::loadClassInternal_name() || | |
109 last_caller->name() == vmSymbols::loadClass_name())) { | |
110 found_it = true; | |
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
111 } else if (!vfst.at_end()) { |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
112 if (vfst.method()->is_native()) { |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
113 // JNI call |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
114 found_it = true; |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
115 } |
0 | 116 } |
117 if (found_it && !vfst.at_end()) { | |
118 // found the caller | |
119 caller = vfst.method()->method_holder(); | |
120 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
121 if (line_number == -1) { |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
122 // show method name if it's a native method |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
123 trace = vfst.method()->name_and_sig_as_C_string(); |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
124 } |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
125 symbolOop s = instanceKlass::cast(caller)->source_file_name(); |
0 | 126 if (s != NULL) { |
127 source_file = s->as_C_string(); | |
128 } | |
129 } | |
130 } | |
131 if (caller != NULL) { | |
132 if (to_class != caller) { | |
133 const char * from = Klass::cast(caller)->external_name(); | |
134 const char * to = Klass::cast(to_class)->external_name(); | |
135 // print in a single call to reduce interleaving between threads | |
136 if (source_file != NULL) { | |
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
137 tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace); |
0 | 138 } else { |
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
139 tty->print("RESOLVE %s %s (%s)\n", from, to, trace); |
0 | 140 } |
141 } | |
142 } | |
143 } | |
144 | |
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
145 void trace_class_resolution(klassOop to_class) { |
0 | 146 EXCEPTION_MARK; |
147 trace_class_resolution_impl(to_class, THREAD); | |
148 if (HAS_PENDING_EXCEPTION) { | |
149 CLEAR_PENDING_EXCEPTION; | |
150 } | |
151 } | |
152 | |
153 // Wrapper to trace JVM functions | |
154 | |
155 #ifdef ASSERT | |
156 class JVMTraceWrapper : public StackObj { | |
157 public: | |
158 JVMTraceWrapper(const char* format, ...) { | |
159 if (TraceJVMCalls) { | |
160 va_list ap; | |
161 va_start(ap, format); | |
162 tty->print("JVM "); | |
163 tty->vprint_cr(format, ap); | |
164 va_end(ap); | |
165 } | |
166 } | |
167 }; | |
168 | |
169 Histogram* JVMHistogram; | |
170 volatile jint JVMHistogram_lock = 0; | |
171 | |
172 class JVMHistogramElement : public HistogramElement { | |
173 public: | |
174 JVMHistogramElement(const char* name); | |
175 }; | |
176 | |
177 JVMHistogramElement::JVMHistogramElement(const char* elementName) { | |
178 _name = elementName; | |
179 uintx count = 0; | |
180 | |
181 while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) { | |
182 while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) { | |
183 count +=1; | |
184 if ( (WarnOnStalledSpinLock > 0) | |
185 && (count % WarnOnStalledSpinLock == 0)) { | |
186 warning("JVMHistogram_lock seems to be stalled"); | |
187 } | |
188 } | |
189 } | |
190 | |
191 if(JVMHistogram == NULL) | |
192 JVMHistogram = new Histogram("JVM Call Counts",100); | |
193 | |
194 JVMHistogram->add_element(this); | |
195 Atomic::dec(&JVMHistogram_lock); | |
196 } | |
197 | |
198 #define JVMCountWrapper(arg) \ | |
199 static JVMHistogramElement* e = new JVMHistogramElement(arg); \ | |
200 if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen! | |
201 | |
202 #define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) | |
203 #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) | |
204 #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) | |
205 #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) | |
206 #else | |
207 #define JVMWrapper(arg1) | |
208 #define JVMWrapper2(arg1, arg2) | |
209 #define JVMWrapper3(arg1, arg2, arg3) | |
210 #define JVMWrapper4(arg1, arg2, arg3, arg4) | |
211 #endif | |
212 | |
213 | |
214 // Interface version ///////////////////////////////////////////////////////////////////// | |
215 | |
216 | |
217 JVM_LEAF(jint, JVM_GetInterfaceVersion()) | |
218 return JVM_INTERFACE_VERSION; | |
219 JVM_END | |
220 | |
221 | |
222 // java.lang.System ////////////////////////////////////////////////////////////////////// | |
223 | |
224 | |
225 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored)) | |
226 JVMWrapper("JVM_CurrentTimeMillis"); | |
227 return os::javaTimeMillis(); | |
228 JVM_END | |
229 | |
230 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored)) | |
231 JVMWrapper("JVM_NanoTime"); | |
232 return os::javaTimeNanos(); | |
233 JVM_END | |
234 | |
235 | |
236 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, | |
237 jobject dst, jint dst_pos, jint length)) | |
238 JVMWrapper("JVM_ArrayCopy"); | |
239 // Check if we have null pointers | |
240 if (src == NULL || dst == NULL) { | |
241 THROW(vmSymbols::java_lang_NullPointerException()); | |
242 } | |
243 arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); | |
244 arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); | |
245 assert(s->is_oop(), "JVM_ArrayCopy: src not an oop"); | |
246 assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); | |
247 // Do copy | |
248 Klass::cast(s->klass())->copy_array(s, src_pos, d, dst_pos, length, thread); | |
249 JVM_END | |
250 | |
251 | |
252 static void set_property(Handle props, const char* key, const char* value, TRAPS) { | |
253 JavaValue r(T_OBJECT); | |
254 // public synchronized Object put(Object key, Object value); | |
255 HandleMark hm(THREAD); | |
256 Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK); | |
257 Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK); | |
258 JavaCalls::call_virtual(&r, | |
259 props, | |
260 KlassHandle(THREAD, SystemDictionary::properties_klass()), | |
261 vmSymbolHandles::put_name(), | |
262 vmSymbolHandles::object_object_object_signature(), | |
263 key_str, | |
264 value_str, | |
265 THREAD); | |
266 } | |
267 | |
268 | |
269 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties)); | |
270 | |
271 | |
272 JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties)) | |
273 JVMWrapper("JVM_InitProperties"); | |
274 ResourceMark rm; | |
275 | |
276 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
277 | |
278 // System property list includes both user set via -D option and | |
279 // jvm system specific properties. | |
280 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
281 PUTPROP(props, p->key(), p->value()); | |
282 } | |
283 | |
284 // Convert the -XX:MaxDirectMemorySize= command line flag | |
285 // to the sun.nio.MaxDirectMemorySize property. | |
286 // Do this after setting user properties to prevent people | |
287 // from setting the value with a -D option, as requested. | |
288 { | |
289 char as_chars[256]; | |
290 jio_snprintf(as_chars, sizeof(as_chars), INTX_FORMAT, MaxDirectMemorySize); | |
291 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); | |
292 } | |
293 | |
294 // JVM monitoring and management support | |
295 // Add the sun.management.compiler property for the compiler's name | |
296 { | |
297 #undef CSIZE | |
298 #if defined(_LP64) || defined(_WIN64) | |
299 #define CSIZE "64-Bit " | |
300 #else | |
301 #define CSIZE | |
302 #endif // 64bit | |
303 | |
304 #ifdef TIERED | |
305 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; | |
306 #else | |
307 #if defined(COMPILER1) | |
308 const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; | |
309 #elif defined(COMPILER2) | |
310 const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; | |
311 #else | |
312 const char* compiler_name = ""; | |
313 #endif // compilers | |
314 #endif // TIERED | |
315 | |
316 if (*compiler_name != '\0' && | |
317 (Arguments::mode() != Arguments::_int)) { | |
318 PUTPROP(props, "sun.management.compiler", compiler_name); | |
319 } | |
320 } | |
321 | |
322 return properties; | |
323 JVM_END | |
324 | |
325 | |
326 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// | |
327 | |
328 extern volatile jint vm_created; | |
329 | |
330 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
331 if (vm_created != 0 && (code == 0)) { | |
332 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
333 Universe::run_finalizers_on_exit(); | |
334 } | |
335 before_exit(thread); | |
336 vm_exit(code); | |
337 JVM_END | |
338 | |
339 | |
340 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
341 before_exit(thread); | |
342 vm_exit(code); | |
343 JVM_END | |
344 | |
345 | |
346 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
347 register_on_exit_function(func); | |
348 JVM_END | |
349 | |
350 | |
351 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
352 JVMWrapper("JVM_GC"); | |
353 if (!DisableExplicitGC) { | |
354 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
355 } | |
356 JVM_END | |
357 | |
358 | |
359 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
360 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
361 return Universe::heap()->millis_since_last_gc(); | |
362 JVM_END | |
363 | |
364 | |
365 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
366 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
367 JVM_END | |
368 | |
369 | |
370 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
371 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
372 JVM_END | |
373 | |
374 static inline jlong convert_size_t_to_jlong(size_t val) { | |
375 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
376 NOT_LP64 (return (jlong)val;) | |
377 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
378 } | |
379 | |
380 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
381 JVMWrapper("JVM_TotalMemory"); | |
382 size_t n = Universe::heap()->capacity(); | |
383 return convert_size_t_to_jlong(n); | |
384 JVM_END | |
385 | |
386 | |
387 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
388 JVMWrapper("JVM_FreeMemory"); | |
389 CollectedHeap* ch = Universe::heap(); | |
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
116
diff
changeset
|
390 size_t n; |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
116
diff
changeset
|
391 { |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
116
diff
changeset
|
392 MutexLocker x(Heap_lock); |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
116
diff
changeset
|
393 n = ch->capacity() - ch->used(); |
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
116
diff
changeset
|
394 } |
0 | 395 return convert_size_t_to_jlong(n); |
396 JVM_END | |
397 | |
398 | |
399 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
400 JVMWrapper("JVM_MaxMemory"); | |
401 size_t n = Universe::heap()->max_capacity(); | |
402 return convert_size_t_to_jlong(n); | |
403 JVM_END | |
404 | |
405 | |
406 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
407 JVMWrapper("JVM_ActiveProcessorCount"); | |
408 return os::active_processor_count(); | |
409 JVM_END | |
410 | |
411 | |
412 | |
413 // java.lang.Throwable ////////////////////////////////////////////////////// | |
414 | |
415 | |
416 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
417 JVMWrapper("JVM_FillInStackTrace"); | |
418 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
419 java_lang_Throwable::fill_in_stack_trace(exception); | |
420 JVM_END | |
421 | |
422 | |
423 JVM_ENTRY(void, JVM_PrintStackTrace(JNIEnv *env, jobject receiver, jobject printable)) | |
424 JVMWrapper("JVM_PrintStackTrace"); | |
425 // Note: This is no longer used in Merlin, but we still support it for compatibility. | |
426 oop exception = JNIHandles::resolve_non_null(receiver); | |
427 oop stream = JNIHandles::resolve_non_null(printable); | |
428 java_lang_Throwable::print_stack_trace(exception, stream); | |
429 JVM_END | |
430 | |
431 | |
432 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
433 JVMWrapper("JVM_GetStackTraceDepth"); | |
434 oop exception = JNIHandles::resolve(throwable); | |
435 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
436 JVM_END | |
437 | |
438 | |
439 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
440 JVMWrapper("JVM_GetStackTraceElement"); | |
441 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
442 oop exception = JNIHandles::resolve(throwable); | |
443 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
444 return JNIHandles::make_local(env, element); | |
445 JVM_END | |
446 | |
447 | |
448 // java.lang.Object /////////////////////////////////////////////// | |
449 | |
450 | |
451 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
452 JVMWrapper("JVM_IHashCode"); | |
453 // as implemented in the classic virtual machine; return 0 if object is NULL | |
454 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
455 JVM_END | |
456 | |
457 | |
458 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
459 JVMWrapper("JVM_MonitorWait"); | |
460 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
461 assert(obj->is_instance() || obj->is_array(), "JVM_MonitorWait must apply to an object"); | |
462 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
463 if (JvmtiExport::should_post_monitor_wait()) { | |
464 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
465 } | |
466 ObjectSynchronizer::wait(obj, ms, CHECK); | |
467 JVM_END | |
468 | |
469 | |
470 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
471 JVMWrapper("JVM_MonitorNotify"); | |
472 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
473 assert(obj->is_instance() || obj->is_array(), "JVM_MonitorNotify must apply to an object"); | |
474 ObjectSynchronizer::notify(obj, CHECK); | |
475 JVM_END | |
476 | |
477 | |
478 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
479 JVMWrapper("JVM_MonitorNotifyAll"); | |
480 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
481 assert(obj->is_instance() || obj->is_array(), "JVM_MonitorNotifyAll must apply to an object"); | |
482 ObjectSynchronizer::notifyall(obj, CHECK); | |
483 JVM_END | |
484 | |
485 | |
486 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
487 JVMWrapper("JVM_Clone"); | |
488 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
489 const KlassHandle klass (THREAD, obj->klass()); | |
490 JvmtiVMObjectAllocEventCollector oam; | |
491 | |
492 #ifdef ASSERT | |
493 // Just checking that the cloneable flag is set correct | |
494 if (obj->is_javaArray()) { | |
495 guarantee(klass->is_cloneable(), "all arrays are cloneable"); | |
496 } else { | |
497 guarantee(obj->is_instance(), "should be instanceOop"); | |
498 bool cloneable = klass->is_subtype_of(SystemDictionary::cloneable_klass()); | |
499 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); | |
500 } | |
501 #endif | |
502 | |
503 // Check if class of obj supports the Cloneable interface. | |
504 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
505 if (!klass->is_cloneable()) { | |
506 ResourceMark rm(THREAD); | |
507 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
508 } | |
509 | |
510 // Make shallow object copy | |
511 const int size = obj->size(); | |
512 oop new_obj = NULL; | |
513 if (obj->is_javaArray()) { | |
514 const int length = ((arrayOop)obj())->length(); | |
515 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
516 } else { | |
517 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
518 } | |
519 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
520 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
521 // be suspended in the middle of copying the pointer and end up with parts | |
522 // of two different pointers in the field. Subsequent dereferences will crash. | |
523 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
524 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
525 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
526 // The same is true of StubRoutines::object_copy and the various oop_copy | |
527 // variants, and of the code generated by the inline_native_clone intrinsic. | |
528 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
529 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
530 (size_t)align_object_size(size) / HeapWordsPerLong); | |
531 // Clear the header | |
532 new_obj->init_mark(); | |
533 | |
534 // Store check (mark entire object and let gc sort it out) | |
535 BarrierSet* bs = Universe::heap()->barrier_set(); | |
536 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
537 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
538 | |
539 // Caution: this involves a java upcall, so the clone should be | |
540 // "gc-robust" by this stage. | |
541 if (klass->has_finalizer()) { | |
542 assert(obj->is_instance(), "should be instanceOop"); | |
543 new_obj = instanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); | |
544 } | |
545 | |
546 return JNIHandles::make_local(env, oop(new_obj)); | |
547 JVM_END | |
548 | |
549 // java.lang.Compiler //////////////////////////////////////////////////// | |
550 | |
551 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
552 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
553 // functions are all silently ignored unless JVM warnings are printed. | |
554 | |
555 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
556 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
557 JVM_END | |
558 | |
559 | |
560 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
561 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
562 return JNI_FALSE; | |
563 JVM_END | |
564 | |
565 | |
566 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
567 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
568 return JNI_FALSE; | |
569 JVM_END | |
570 | |
571 | |
572 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
573 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
574 return JNI_FALSE; | |
575 JVM_END | |
576 | |
577 | |
578 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
579 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
580 return NULL; | |
581 JVM_END | |
582 | |
583 | |
584 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
585 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
586 JVM_END | |
587 | |
588 | |
589 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
590 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
591 JVM_END | |
592 | |
593 | |
594 | |
595 // Error message support ////////////////////////////////////////////////////// | |
596 | |
597 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
598 JVMWrapper("JVM_GetLastErrorString"); | |
599 return hpi::lasterror(buf, len); | |
600 JVM_END | |
601 | |
602 | |
603 // java.io.File /////////////////////////////////////////////////////////////// | |
604 | |
605 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
606 JVMWrapper2("JVM_NativePath (%s)", path); | |
607 return hpi::native_path(path); | |
608 JVM_END | |
609 | |
610 | |
611 // Misc. class handling /////////////////////////////////////////////////////////// | |
612 | |
613 | |
614 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
615 JVMWrapper("JVM_GetCallerClass"); | |
616 klassOop k = thread->security_get_caller_class(depth); | |
617 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); | |
618 JVM_END | |
619 | |
620 | |
621 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
622 JVMWrapper("JVM_FindPrimitiveClass"); | |
623 oop mirror = NULL; | |
624 BasicType t = name2type(utf); | |
625 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
626 mirror = Universe::java_mirror(t); | |
627 } | |
628 if (mirror == NULL) { | |
629 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
630 } else { | |
631 return (jclass) JNIHandles::make_local(env, mirror); | |
632 } | |
633 JVM_END | |
634 | |
635 | |
636 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
637 JVMWrapper("JVM_ResolveClass"); | |
638 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
639 JVM_END | |
640 | |
878
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
641 |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
642 // Returns a class loaded by the bootstrap class loader; or null |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
643 // if not found. ClassNotFoundException is not thrown. |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
644 // |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
645 // Rationale behind JVM_FindClassFromBootLoader |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
646 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
647 // b> because of (a) java.dll has a direct dependecy on the unexported |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
648 // private symbol "_JVM_FindClassFromClassLoader@20". |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
649 // c> the launcher cannot use the private symbol as it dynamically opens |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
650 // the entry point, so if something changes, the launcher will fail |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
651 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
652 // stable exported interface. |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
653 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
654 // signature to change from _JVM_FindClassFromClassLoader@20 to |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
655 // JVM_FindClassFromClassLoader and will not be backward compatible |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
656 // with older JDKs. |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
657 // Thus a public/stable exported entry point is the right solution, |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
658 // public here means public in linker semantics, and is exported only |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
659 // to the JDK, and is not intended to be a public API. |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
660 |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
661 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
662 const char* name)) |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
663 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
664 |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
665 // Java libraries should ensure that name is never null... |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
666 if (name == NULL || (int)strlen(name) > symbolOopDesc::max_length()) { |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
667 // It's impossible to create this class; the name cannot fit |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
668 // into the constant pool. |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
669 return NULL; |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
670 } |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
671 |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
672 symbolHandle h_name = oopFactory::new_symbol_handle(name, CHECK_NULL); |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
673 klassOop k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
674 if (k == NULL) { |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
675 return NULL; |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
676 } |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
677 |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
678 if (TraceClassResolution) { |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
679 trace_class_resolution(k); |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
680 } |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
681 return (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
682 JVM_END |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
683 |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
684 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
685 jboolean init, jobject loader, |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
686 jboolean throwError)) |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
687 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
688 throwError ? "error" : "exception"); |
388 | 689 // Java libraries should ensure that name is never null... |
690 if (name == NULL || (int)strlen(name) > symbolOopDesc::max_length()) { | |
691 // It's impossible to create this class; the name cannot fit | |
692 // into the constant pool. | |
693 if (throwError) { | |
694 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
695 } else { | |
696 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
697 } | |
698 } | |
699 symbolHandle h_name = oopFactory::new_symbol_handle(name, CHECK_NULL); | |
700 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
701 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
702 Handle(), throwError, THREAD); | |
703 | |
704 if (TraceClassResolution && result != NULL) { | |
705 trace_class_resolution(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(result))); | |
706 } | |
707 return result; | |
0 | 708 JVM_END |
709 | |
710 | |
711 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
712 jboolean init, jclass from)) | |
713 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
714 if (name == NULL || (int)strlen(name) > symbolOopDesc::max_length()) { | |
715 // It's impossible to create this class; the name cannot fit | |
716 // into the constant pool. | |
717 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
718 } | |
719 symbolHandle h_name = oopFactory::new_symbol_handle(name, CHECK_NULL); | |
720 oop from_class_oop = JNIHandles::resolve(from); | |
721 klassOop from_class = (from_class_oop == NULL) | |
722 ? (klassOop)NULL | |
723 : java_lang_Class::as_klassOop(from_class_oop); | |
724 oop class_loader = NULL; | |
725 oop protection_domain = NULL; | |
726 if (from_class != NULL) { | |
727 class_loader = Klass::cast(from_class)->class_loader(); | |
728 protection_domain = Klass::cast(from_class)->protection_domain(); | |
729 } | |
730 Handle h_loader(THREAD, class_loader); | |
731 Handle h_prot (THREAD, protection_domain); | |
732 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
733 h_prot, true, thread); | |
734 | |
735 if (TraceClassResolution && result != NULL) { | |
736 // this function is generally only used for class loading during verification. | |
737 ResourceMark rm; | |
738 oop from_mirror = JNIHandles::resolve_non_null(from); | |
739 klassOop from_class = java_lang_Class::as_klassOop(from_mirror); | |
740 const char * from_name = Klass::cast(from_class)->external_name(); | |
741 | |
742 oop mirror = JNIHandles::resolve_non_null(result); | |
743 klassOop to_class = java_lang_Class::as_klassOop(mirror); | |
744 const char * to = Klass::cast(to_class)->external_name(); | |
745 tty->print("RESOLVE %s %s (verification)\n", from_name, to); | |
746 } | |
747 | |
748 return result; | |
749 JVM_END | |
750 | |
751 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
752 if (loader.is_null()) { | |
753 return; | |
754 } | |
755 | |
756 // check whether the current caller thread holds the lock or not. | |
757 // If not, increment the corresponding counter | |
758 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
759 ObjectSynchronizer::owner_self) { | |
760 counter->inc(); | |
761 } | |
762 } | |
763 | |
764 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
973
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
878
diff
changeset
|
765 // and JVM_DefineClassWithSourceCond() |
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
878
diff
changeset
|
766 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
878
diff
changeset
|
767 jobject loader, const jbyte *buf, |
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
878
diff
changeset
|
768 jsize len, jobject pd, const char *source, |
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
878
diff
changeset
|
769 jboolean verify, TRAPS) { |
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
388
diff
changeset
|
770 if (source == NULL) source = "__JVM_DefineClass__"; |
0 | 771 |
875
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
726
diff
changeset
|
772 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
726
diff
changeset
|
773 JavaThread* jt = (JavaThread*) THREAD; |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
726
diff
changeset
|
774 |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
726
diff
changeset
|
775 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
726
diff
changeset
|
776 ClassLoader::perf_define_appclass_selftime(), |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
726
diff
changeset
|
777 ClassLoader::perf_define_appclasses(), |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
726
diff
changeset
|
778 jt->get_thread_stat()->perf_recursion_counts_addr(), |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
726
diff
changeset
|
779 jt->get_thread_stat()->perf_timers_addr(), |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
726
diff
changeset
|
780 PerfClassTraceTime::DEFINE_CLASS); |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
726
diff
changeset
|
781 |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
726
diff
changeset
|
782 if (UsePerfData) { |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
726
diff
changeset
|
783 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
726
diff
changeset
|
784 } |
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
726
diff
changeset
|
785 |
0 | 786 // Since exceptions can be thrown, class initialization can take place |
787 // if name is NULL no check for class name in .class stream has to be made. | |
788 symbolHandle class_name; | |
789 if (name != NULL) { | |
790 const int str_len = (int)strlen(name); | |
791 if (str_len > symbolOopDesc::max_length()) { | |
792 // It's impossible to create this class; the name cannot fit | |
793 // into the constant pool. | |
794 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
795 } | |
796 class_name = oopFactory::new_symbol_handle(name, str_len, CHECK_NULL); | |
797 } | |
798 | |
799 ResourceMark rm(THREAD); | |
800 ClassFileStream st((u1*) buf, len, (char *)source); | |
801 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
802 if (UsePerfData) { | |
803 is_lock_held_by_thread(class_loader, | |
804 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
805 THREAD); | |
806 } | |
807 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
808 klassOop k = SystemDictionary::resolve_from_stream(class_name, class_loader, | |
809 protection_domain, &st, | |
973
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
878
diff
changeset
|
810 verify != 0, |
0 | 811 CHECK_NULL); |
812 | |
813 if (TraceClassResolution && k != NULL) { | |
814 trace_class_resolution(k); | |
815 } | |
816 | |
817 return (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); | |
818 } | |
819 | |
820 | |
821 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
822 JVMWrapper2("JVM_DefineClass %s", name); | |
823 | |
973
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
878
diff
changeset
|
824 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
0 | 825 JVM_END |
826 | |
827 | |
828 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
829 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
830 | |
973
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
878
diff
changeset
|
831 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
878
diff
changeset
|
832 JVM_END |
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
878
diff
changeset
|
833 |
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
878
diff
changeset
|
834 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
878
diff
changeset
|
835 jobject loader, const jbyte *buf, |
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
878
diff
changeset
|
836 jsize len, jobject pd, |
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
878
diff
changeset
|
837 const char *source, jboolean verify)) |
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
878
diff
changeset
|
838 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
878
diff
changeset
|
839 |
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
878
diff
changeset
|
840 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
878
diff
changeset
|
841 JVM_END |
0 | 842 |
843 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
844 JVMWrapper("JVM_FindLoadedClass"); | |
845 ResourceMark rm(THREAD); | |
846 | |
847 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
848 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
849 | |
850 const char* str = java_lang_String::as_utf8_string(string()); | |
851 // Sanity check, don't expect null | |
852 if (str == NULL) return NULL; | |
853 | |
854 const int str_len = (int)strlen(str); | |
855 if (str_len > symbolOopDesc::max_length()) { | |
856 // It's impossible to create this class; the name cannot fit | |
857 // into the constant pool. | |
858 return NULL; | |
859 } | |
860 symbolHandle klass_name = oopFactory::new_symbol_handle(str, str_len,CHECK_NULL); | |
861 | |
862 // Security Note: | |
863 // The Java level wrapper will perform the necessary security check allowing | |
864 // us to pass the NULL as the initiating class loader. | |
865 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
866 if (UsePerfData) { | |
867 is_lock_held_by_thread(h_loader, | |
868 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
869 THREAD); | |
870 } | |
871 | |
872 klassOop k = SystemDictionary::find_instance_or_array_klass(klass_name, | |
873 h_loader, | |
874 Handle(), | |
875 CHECK_NULL); | |
876 | |
877 return (k == NULL) ? NULL : | |
878 (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); | |
879 JVM_END | |
880 | |
881 | |
882 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
883 | |
884 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
885 assert (cls != NULL, "illegal class"); | |
886 JVMWrapper("JVM_GetClassName"); | |
887 JvmtiVMObjectAllocEventCollector oam; | |
888 ResourceMark rm(THREAD); | |
889 const char* name; | |
890 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
891 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
892 } else { | |
893 // Consider caching interned string in Klass | |
894 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
895 assert(k->is_klass(), "just checking"); | |
896 name = Klass::cast(k)->external_name(); | |
897 } | |
898 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
899 return (jstring) JNIHandles::make_local(env, result); | |
900 JVM_END | |
901 | |
902 | |
903 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
904 JVMWrapper("JVM_GetClassInterfaces"); | |
905 JvmtiVMObjectAllocEventCollector oam; | |
906 oop mirror = JNIHandles::resolve_non_null(cls); | |
907 | |
908 // Special handling for primitive objects | |
909 if (java_lang_Class::is_primitive(mirror)) { | |
910 // Primitive objects does not have any interfaces | |
911 objArrayOop r = oopFactory::new_objArray(SystemDictionary::class_klass(), 0, CHECK_NULL); | |
912 return (jobjectArray) JNIHandles::make_local(env, r); | |
913 } | |
914 | |
915 KlassHandle klass(thread, java_lang_Class::as_klassOop(mirror)); | |
916 // Figure size of result array | |
917 int size; | |
918 if (klass->oop_is_instance()) { | |
919 size = instanceKlass::cast(klass())->local_interfaces()->length(); | |
920 } else { | |
921 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
922 size = 2; | |
923 } | |
924 | |
925 // Allocate result array | |
926 objArrayOop r = oopFactory::new_objArray(SystemDictionary::class_klass(), size, CHECK_NULL); | |
927 objArrayHandle result (THREAD, r); | |
928 // Fill in result | |
929 if (klass->oop_is_instance()) { | |
930 // Regular instance klass, fill in all local interfaces | |
931 for (int index = 0; index < size; index++) { | |
932 klassOop k = klassOop(instanceKlass::cast(klass())->local_interfaces()->obj_at(index)); | |
933 result->obj_at_put(index, Klass::cast(k)->java_mirror()); | |
934 } | |
935 } else { | |
936 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
937 result->obj_at_put(0, Klass::cast(SystemDictionary::cloneable_klass())->java_mirror()); | |
938 result->obj_at_put(1, Klass::cast(SystemDictionary::serializable_klass())->java_mirror()); | |
939 } | |
940 return (jobjectArray) JNIHandles::make_local(env, result()); | |
941 JVM_END | |
942 | |
943 | |
944 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
945 JVMWrapper("JVM_GetClassLoader"); | |
946 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
947 return NULL; | |
948 } | |
949 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
950 oop loader = Klass::cast(k)->class_loader(); | |
951 return JNIHandles::make_local(env, loader); | |
952 JVM_END | |
953 | |
954 | |
955 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
956 JVMWrapper("JVM_IsInterface"); | |
957 oop mirror = JNIHandles::resolve_non_null(cls); | |
958 if (java_lang_Class::is_primitive(mirror)) { | |
959 return JNI_FALSE; | |
960 } | |
961 klassOop k = java_lang_Class::as_klassOop(mirror); | |
962 jboolean result = Klass::cast(k)->is_interface(); | |
963 assert(!result || Klass::cast(k)->oop_is_instance(), | |
964 "all interfaces are instance types"); | |
965 // The compiler intrinsic for isInterface tests the | |
966 // Klass::_access_flags bits in the same way. | |
967 return result; | |
968 JVM_END | |
969 | |
970 | |
971 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
972 JVMWrapper("JVM_GetClassSigners"); | |
973 JvmtiVMObjectAllocEventCollector oam; | |
974 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
975 // There are no signers for primitive types | |
976 return NULL; | |
977 } | |
978 | |
979 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
980 objArrayOop signers = NULL; | |
981 if (Klass::cast(k)->oop_is_instance()) { | |
982 signers = instanceKlass::cast(k)->signers(); | |
983 } | |
984 | |
985 // If there are no signers set in the class, or if the class | |
986 // is an array, return NULL. | |
987 if (signers == NULL) return NULL; | |
988 | |
989 // copy of the signers array | |
990 klassOop element = objArrayKlass::cast(signers->klass())->element_klass(); | |
991 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); | |
992 for (int index = 0; index < signers->length(); index++) { | |
993 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
994 } | |
995 | |
996 // return the copy | |
997 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
998 JVM_END | |
999 | |
1000 | |
1001 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
1002 JVMWrapper("JVM_SetClassSigners"); | |
1003 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1004 // This call is ignored for primitive types and arrays. | |
1005 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
1006 // be called with an array. Only the bootstrap loader creates arrays. | |
1007 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
1008 if (Klass::cast(k)->oop_is_instance()) { | |
1009 instanceKlass::cast(k)->set_signers(objArrayOop(JNIHandles::resolve(signers))); | |
1010 } | |
1011 } | |
1012 JVM_END | |
1013 | |
1014 | |
1015 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
1016 JVMWrapper("JVM_GetProtectionDomain"); | |
1017 if (JNIHandles::resolve(cls) == NULL) { | |
1018 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
1019 } | |
1020 | |
1021 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1022 // Primitive types does not have a protection domain. | |
1023 return NULL; | |
1024 } | |
1025 | |
1026 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
1027 return (jobject) JNIHandles::make_local(env, Klass::cast(k)->protection_domain()); | |
1028 JVM_END | |
1029 | |
1030 | |
1031 // Obsolete since 1.2 (Class.setProtectionDomain removed), although | |
1032 // still defined in core libraries as of 1.5. | |
1033 JVM_ENTRY(void, JVM_SetProtectionDomain(JNIEnv *env, jclass cls, jobject protection_domain)) | |
1034 JVMWrapper("JVM_SetProtectionDomain"); | |
1035 if (JNIHandles::resolve(cls) == NULL) { | |
1036 THROW(vmSymbols::java_lang_NullPointerException()); | |
1037 } | |
1038 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1039 // Call is ignored for primitive types | |
1040 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
1041 | |
1042 // cls won't be an array, as this called only from ClassLoader.defineClass | |
1043 if (Klass::cast(k)->oop_is_instance()) { | |
1044 oop pd = JNIHandles::resolve(protection_domain); | |
1045 assert(pd == NULL || pd->is_oop(), "just checking"); | |
1046 instanceKlass::cast(k)->set_protection_domain(pd); | |
1047 } | |
1048 } | |
1049 JVM_END | |
1050 | |
1051 | |
1052 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
1053 JVMWrapper("JVM_DoPrivileged"); | |
1054 | |
1055 if (action == NULL) { | |
1056 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
1057 } | |
1058 | |
1059 // Stack allocated list of privileged stack elements | |
1060 PrivilegedElement pi; | |
1061 | |
1062 // Check that action object understands "Object run()" | |
1063 Handle object (THREAD, JNIHandles::resolve(action)); | |
1064 | |
1065 // get run() method | |
1066 methodOop m_oop = Klass::cast(object->klass())->uncached_lookup_method( | |
1067 vmSymbols::run_method_name(), | |
1068 vmSymbols::void_object_signature()); | |
1069 methodHandle m (THREAD, m_oop); | |
1070 if (m.is_null() || !m->is_method() || !methodOop(m())->is_public() || methodOop(m())->is_static()) { | |
1071 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); | |
1072 } | |
1073 | |
1074 // Compute the frame initiating the do privileged operation and setup the privileged stack | |
1075 vframeStream vfst(thread); | |
1076 vfst.security_get_caller_frame(1); | |
1077 | |
1078 if (!vfst.at_end()) { | |
1079 pi.initialize(&vfst, JNIHandles::resolve(context), thread->privileged_stack_top(), CHECK_NULL); | |
1080 thread->set_privileged_stack_top(&pi); | |
1081 } | |
1082 | |
1083 | |
1084 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
1085 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
1086 Handle pending_exception; | |
1087 JavaValue result(T_OBJECT); | |
1088 JavaCallArguments args(object); | |
1089 JavaCalls::call(&result, m, &args, THREAD); | |
1090 | |
1091 // done with action, remove ourselves from the list | |
1092 if (!vfst.at_end()) { | |
1093 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
1094 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
1095 } | |
1096 | |
1097 if (HAS_PENDING_EXCEPTION) { | |
1098 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
1099 CLEAR_PENDING_EXCEPTION; | |
1100 | |
1101 if ( pending_exception->is_a(SystemDictionary::exception_klass()) && | |
1102 !pending_exception->is_a(SystemDictionary::runtime_exception_klass())) { | |
1103 // Throw a java.security.PrivilegedActionException(Exception e) exception | |
1104 JavaCallArguments args(pending_exception); | |
1105 THROW_ARG_0(vmSymbolHandles::java_security_PrivilegedActionException(), | |
1106 vmSymbolHandles::exception_void_signature(), | |
1107 &args); | |
1108 } | |
1109 } | |
1110 | |
1111 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
1112 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
1113 JVM_END | |
1114 | |
1115 | |
1116 // Returns the inherited_access_control_context field of the running thread. | |
1117 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
1118 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
1119 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
1120 return JNIHandles::make_local(env, result); | |
1121 JVM_END | |
1122 | |
1123 class RegisterArrayForGC { | |
1124 private: | |
1125 JavaThread *_thread; | |
1126 public: | |
1127 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
1128 _thread = thread; | |
1129 _thread->register_array_for_gc(array); | |
1130 } | |
1131 | |
1132 ~RegisterArrayForGC() { | |
1133 _thread->register_array_for_gc(NULL); | |
1134 } | |
1135 }; | |
1136 | |
1137 | |
1138 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
1139 JVMWrapper("JVM_GetStackAccessControlContext"); | |
1140 if (!UsePrivilegedStack) return NULL; | |
1141 | |
1142 ResourceMark rm(THREAD); | |
1143 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
1144 JvmtiVMObjectAllocEventCollector oam; | |
1145 | |
1146 // count the protection domains on the execution stack. We collapse | |
1147 // duplicate consecutive protection domains into a single one, as | |
1148 // well as stopping when we hit a privileged frame. | |
1149 | |
1150 // Use vframeStream to iterate through Java frames | |
1151 vframeStream vfst(thread); | |
1152 | |
1153 oop previous_protection_domain = NULL; | |
1154 Handle privileged_context(thread, NULL); | |
1155 bool is_privileged = false; | |
1156 oop protection_domain = NULL; | |
1157 | |
1158 for(; !vfst.at_end(); vfst.next()) { | |
1159 // get method of frame | |
1160 methodOop method = vfst.method(); | |
1161 intptr_t* frame_id = vfst.frame_id(); | |
1162 | |
1163 // check the privileged frames to see if we have a match | |
1164 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
1165 // this frame is privileged | |
1166 is_privileged = true; | |
1167 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
1168 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
1169 } else { | |
1170 protection_domain = instanceKlass::cast(method->method_holder())->protection_domain(); | |
1171 } | |
1172 | |
1173 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
1174 local_array->push(protection_domain); | |
1175 previous_protection_domain = protection_domain; | |
1176 } | |
1177 | |
1178 if (is_privileged) break; | |
1179 } | |
1180 | |
1181 | |
1182 // either all the domains on the stack were system domains, or | |
1183 // we had a privileged system domain | |
1184 if (local_array->is_empty()) { | |
1185 if (is_privileged && privileged_context.is_null()) return NULL; | |
1186 | |
1187 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
1188 return JNIHandles::make_local(env, result); | |
1189 } | |
1190 | |
1191 // the resource area must be registered in case of a gc | |
1192 RegisterArrayForGC ragc(thread, local_array); | |
1193 objArrayOop context = oopFactory::new_objArray(SystemDictionary::protectionDomain_klass(), | |
1194 local_array->length(), CHECK_NULL); | |
1195 objArrayHandle h_context(thread, context); | |
1196 for (int index = 0; index < local_array->length(); index++) { | |
1197 h_context->obj_at_put(index, local_array->at(index)); | |
1198 } | |
1199 | |
1200 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
1201 | |
1202 return JNIHandles::make_local(env, result); | |
1203 JVM_END | |
1204 | |
1205 | |
1206 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
1207 JVMWrapper("JVM_IsArrayClass"); | |
1208 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
1209 return (k != NULL) && Klass::cast(k)->oop_is_javaArray() ? true : false; | |
1210 JVM_END | |
1211 | |
1212 | |
1213 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
1214 JVMWrapper("JVM_IsPrimitiveClass"); | |
1215 oop mirror = JNIHandles::resolve_non_null(cls); | |
1216 return (jboolean) java_lang_Class::is_primitive(mirror); | |
1217 JVM_END | |
1218 | |
1219 | |
1220 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
1221 JVMWrapper("JVM_GetComponentType"); | |
1222 oop mirror = JNIHandles::resolve_non_null(cls); | |
1223 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
1224 return (jclass) JNIHandles::make_local(env, result); | |
1225 JVM_END | |
1226 | |
1227 | |
1228 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
1229 JVMWrapper("JVM_GetClassModifiers"); | |
1230 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1231 // Primitive type | |
1232 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1233 } | |
1234 | |
1235 Klass* k = Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls))); | |
1236 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); | |
1237 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
1238 return k->modifier_flags(); | |
1239 JVM_END | |
1240 | |
1241 | |
1242 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
1243 | |
1244 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
1245 const int inner_class_info_index = 0; | |
1246 const int outer_class_info_index = 1; | |
1247 | |
1248 JvmtiVMObjectAllocEventCollector oam; | |
1249 // ofClass is a reference to a java_lang_Class object. The mirror object | |
1250 // of an instanceKlass | |
1251 | |
1252 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
1253 ! Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_instance()) { | |
1254 oop result = oopFactory::new_objArray(SystemDictionary::class_klass(), 0, CHECK_NULL); | |
1255 return (jobjectArray)JNIHandles::make_local(env, result); | |
1256 } | |
1257 | |
1258 instanceKlassHandle k(thread, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
1259 | |
1260 if (k->inner_classes()->length() == 0) { | |
1261 // Neither an inner nor outer class | |
1262 oop result = oopFactory::new_objArray(SystemDictionary::class_klass(), 0, CHECK_NULL); | |
1263 return (jobjectArray)JNIHandles::make_local(env, result); | |
1264 } | |
1265 | |
1266 // find inner class info | |
1267 typeArrayHandle icls(thread, k->inner_classes()); | |
1268 constantPoolHandle cp(thread, k->constants()); | |
1269 int length = icls->length(); | |
1270 | |
1271 // Allocate temp. result array | |
1272 objArrayOop r = oopFactory::new_objArray(SystemDictionary::class_klass(), length/4, CHECK_NULL); | |
1273 objArrayHandle result (THREAD, r); | |
1274 int members = 0; | |
1275 | |
1276 for(int i = 0; i < length; i += 4) { | |
1277 int ioff = icls->ushort_at(i + inner_class_info_index); | |
1278 int ooff = icls->ushort_at(i + outer_class_info_index); | |
1279 | |
1280 if (ioff != 0 && ooff != 0) { | |
1281 // Check to see if the name matches the class we're looking for | |
1282 // before attempting to find the class. | |
1283 if (cp->klass_name_at_matches(k, ooff)) { | |
1284 klassOop outer_klass = cp->klass_at(ooff, CHECK_NULL); | |
1285 if (outer_klass == k()) { | |
1286 klassOop ik = cp->klass_at(ioff, CHECK_NULL); | |
1287 instanceKlassHandle inner_klass (THREAD, ik); | |
1288 | |
1289 // Throws an exception if outer klass has not declared k as | |
1290 // an inner klass | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1291 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
0 | 1292 |
1293 result->obj_at_put(members, inner_klass->java_mirror()); | |
1294 members++; | |
1295 } | |
1296 } | |
1297 } | |
1298 } | |
1299 | |
1300 if (members != length) { | |
1301 // Return array of right length | |
1302 objArrayOop res = oopFactory::new_objArray(SystemDictionary::class_klass(), members, CHECK_NULL); | |
1303 for(int i = 0; i < members; i++) { | |
1304 res->obj_at_put(i, result->obj_at(i)); | |
1305 } | |
1306 return (jobjectArray)JNIHandles::make_local(env, res); | |
1307 } | |
1308 | |
1309 return (jobjectArray)JNIHandles::make_local(env, result()); | |
1310 JVM_END | |
1311 | |
1312 | |
1313 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1314 { |
0 | 1315 // ofClass is a reference to a java_lang_Class object. |
1316 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
1317 ! Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_instance()) { | |
1318 return NULL; | |
1319 } | |
1320 | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1321 symbolOop simple_name = NULL; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1322 klassOop outer_klass |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1323 = instanceKlass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)) |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1324 )->compute_enclosing_class(simple_name, CHECK_NULL); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1325 if (outer_klass == NULL) return NULL; // already a top-level class |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1326 if (simple_name == NULL) return NULL; // an anonymous class (inside a method) |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1327 return (jclass) JNIHandles::make_local(env, Klass::cast(outer_klass)->java_mirror()); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1328 } |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1329 JVM_END |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1330 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1331 // should be in instanceKlass.cpp, but is here for historical reasons |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1332 klassOop instanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1333 symbolOop& simple_name_result, TRAPS) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1334 Thread* thread = THREAD; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1335 const int inner_class_info_index = inner_class_inner_class_info_offset; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1336 const int outer_class_info_index = inner_class_outer_class_info_offset; |
0 | 1337 |
1338 if (k->inner_classes()->length() == 0) { | |
1339 // No inner class info => no declaring class | |
1340 return NULL; | |
1341 } | |
1342 | |
1343 typeArrayHandle i_icls(thread, k->inner_classes()); | |
1344 constantPoolHandle i_cp(thread, k->constants()); | |
1345 int i_length = i_icls->length(); | |
1346 | |
1347 bool found = false; | |
1348 klassOop ok; | |
1349 instanceKlassHandle outer_klass; | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1350 bool inner_is_member = false; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1351 int simple_name_index = 0; |
0 | 1352 |
1353 // Find inner_klass attribute | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1354 for (int i = 0; i < i_length && !found; i += inner_class_next_offset) { |
0 | 1355 int ioff = i_icls->ushort_at(i + inner_class_info_index); |
1356 int ooff = i_icls->ushort_at(i + outer_class_info_index); | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1357 int noff = i_icls->ushort_at(i + inner_class_inner_name_offset); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1358 if (ioff != 0) { |
0 | 1359 // Check to see if the name matches the class we're looking for |
1360 // before attempting to find the class. | |
1361 if (i_cp->klass_name_at_matches(k, ioff)) { | |
1362 klassOop inner_klass = i_cp->klass_at(ioff, CHECK_NULL); | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1363 found = (k() == inner_klass); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1364 if (found && ooff != 0) { |
0 | 1365 ok = i_cp->klass_at(ooff, CHECK_NULL); |
1366 outer_klass = instanceKlassHandle(thread, ok); | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1367 simple_name_index = noff; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1368 inner_is_member = true; |
0 | 1369 } |
1370 } | |
1371 } | |
1372 } | |
1373 | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1374 if (found && outer_klass.is_null()) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1375 // It may be anonymous; try for that. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1376 int encl_method_class_idx = k->enclosing_method_class_index(); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1377 if (encl_method_class_idx != 0) { |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1378 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1379 outer_klass = instanceKlassHandle(thread, ok); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1380 inner_is_member = false; |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1381 } |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1382 } |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1383 |
0 | 1384 // If no inner class attribute found for this class. |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1385 if (outer_klass.is_null()) return NULL; |
0 | 1386 |
1387 // Throws an exception if outer klass has not declared k as an inner klass | |
665
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1388 // We need evidence that each klass knows about the other, or else |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1389 // the system could allow a spoof of an inner class to gain access rights. |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1390 Reflection::check_for_inner_class(outer_klass, k, inner_is_member, CHECK_NULL); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1391 |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1392 simple_name_result = (inner_is_member ? i_cp->symbol_at(simple_name_index) : symbolOop(NULL)); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1393 return outer_klass(); |
c89f86385056
6814659: separable cleanups and subroutines for 6655638
jrose
parents:
579
diff
changeset
|
1394 } |
0 | 1395 |
1396 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
1397 assert (cls != NULL, "illegal class"); | |
1398 JVMWrapper("JVM_GetClassSignature"); | |
1399 JvmtiVMObjectAllocEventCollector oam; | |
1400 ResourceMark rm(THREAD); | |
1401 // Return null for arrays and primatives | |
1402 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1403 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
1404 if (Klass::cast(k)->oop_is_instance()) { | |
1405 symbolHandle sym = symbolHandle(THREAD, instanceKlass::cast(k)->generic_signature()); | |
1406 if (sym.is_null()) return NULL; | |
1407 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
1408 return (jstring) JNIHandles::make_local(env, str()); | |
1409 } | |
1410 } | |
1411 return NULL; | |
1412 JVM_END | |
1413 | |
1414 | |
1415 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
1416 assert (cls != NULL, "illegal class"); | |
1417 JVMWrapper("JVM_GetClassAnnotations"); | |
1418 ResourceMark rm(THREAD); | |
1419 // Return null for arrays and primitives | |
1420 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1421 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
1422 if (Klass::cast(k)->oop_is_instance()) { | |
1423 return (jbyteArray) JNIHandles::make_local(env, | |
1424 instanceKlass::cast(k)->class_annotations()); | |
1425 } | |
1426 } | |
1427 return NULL; | |
1428 JVM_END | |
1429 | |
1430 | |
1431 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) | |
1432 assert(field != NULL, "illegal field"); | |
1433 JVMWrapper("JVM_GetFieldAnnotations"); | |
1434 | |
1435 // some of this code was adapted from from jni_FromReflectedField | |
1436 | |
1437 // field is a handle to a java.lang.reflect.Field object | |
1438 oop reflected = JNIHandles::resolve_non_null(field); | |
1439 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
1440 klassOop k = java_lang_Class::as_klassOop(mirror); | |
1441 int slot = java_lang_reflect_Field::slot(reflected); | |
1442 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
1443 | |
1444 fieldDescriptor fd; | |
1445 KlassHandle kh(THREAD, k); | |
1446 intptr_t offset = instanceKlass::cast(kh())->offset_from_fields(slot); | |
1447 | |
1448 if (modifiers & JVM_ACC_STATIC) { | |
1449 // for static fields we only look in the current class | |
1450 if (!instanceKlass::cast(kh())->find_local_field_from_offset(offset, | |
1451 true, &fd)) { | |
1452 assert(false, "cannot find static field"); | |
1453 return NULL; // robustness | |
1454 } | |
1455 } else { | |
1456 // for instance fields we start with the current class and work | |
1457 // our way up through the superclass chain | |
1458 if (!instanceKlass::cast(kh())->find_field_from_offset(offset, false, | |
1459 &fd)) { | |
1460 assert(false, "cannot find instance field"); | |
1461 return NULL; // robustness | |
1462 } | |
1463 } | |
1464 | |
1465 return (jbyteArray) JNIHandles::make_local(env, fd.annotations()); | |
1466 JVM_END | |
1467 | |
1468 | |
1469 static methodOop jvm_get_method_common(jobject method, TRAPS) { | |
1470 // some of this code was adapted from from jni_FromReflectedMethod | |
1471 | |
1472 oop reflected = JNIHandles::resolve_non_null(method); | |
1473 oop mirror = NULL; | |
1474 int slot = 0; | |
1475 | |
1476 if (reflected->klass() == SystemDictionary::reflect_constructor_klass()) { | |
1477 mirror = java_lang_reflect_Constructor::clazz(reflected); | |
1478 slot = java_lang_reflect_Constructor::slot(reflected); | |
1479 } else { | |
1480 assert(reflected->klass() == SystemDictionary::reflect_method_klass(), | |
1481 "wrong type"); | |
1482 mirror = java_lang_reflect_Method::clazz(reflected); | |
1483 slot = java_lang_reflect_Method::slot(reflected); | |
1484 } | |
1485 klassOop k = java_lang_Class::as_klassOop(mirror); | |
1486 | |
1487 KlassHandle kh(THREAD, k); | |
1488 methodOop m = instanceKlass::cast(kh())->method_with_idnum(slot); | |
1489 if (m == NULL) { | |
1490 assert(false, "cannot find method"); | |
1491 return NULL; // robustness | |
1492 } | |
1493 | |
1494 return m; | |
1495 } | |
1496 | |
1497 | |
1498 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
1499 JVMWrapper("JVM_GetMethodAnnotations"); | |
1500 | |
1501 // method is a handle to a java.lang.reflect.Method object | |
1502 methodOop m = jvm_get_method_common(method, CHECK_NULL); | |
1503 return (jbyteArray) JNIHandles::make_local(env, m->annotations()); | |
1504 JVM_END | |
1505 | |
1506 | |
1507 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
1508 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
1509 | |
1510 // method is a handle to a java.lang.reflect.Method object | |
1511 methodOop m = jvm_get_method_common(method, CHECK_NULL); | |
1512 return (jbyteArray) JNIHandles::make_local(env, m->annotation_default()); | |
1513 JVM_END | |
1514 | |
1515 | |
1516 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
1517 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
1518 | |
1519 // method is a handle to a java.lang.reflect.Method object | |
1520 methodOop m = jvm_get_method_common(method, CHECK_NULL); | |
1521 return (jbyteArray) JNIHandles::make_local(env, m->parameter_annotations()); | |
1522 JVM_END | |
1523 | |
1524 | |
1525 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
1526 | |
1527 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1528 { | |
1529 JVMWrapper("JVM_GetClassDeclaredFields"); | |
1530 JvmtiVMObjectAllocEventCollector oam; | |
1531 | |
1532 // Exclude primitive types and array types | |
1533 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
1534 Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { | |
1535 // Return empty array | |
1536 oop res = oopFactory::new_objArray(SystemDictionary::reflect_field_klass(), 0, CHECK_NULL); | |
1537 return (jobjectArray) JNIHandles::make_local(env, res); | |
1538 } | |
1539 | |
1540 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
1541 constantPoolHandle cp(THREAD, k->constants()); | |
1542 | |
1543 // Ensure class is linked | |
1544 k->link_class(CHECK_NULL); | |
1545 | |
1546 typeArrayHandle fields(THREAD, k->fields()); | |
1547 int fields_len = fields->length(); | |
1548 | |
1549 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
1550 bool skip_backtrace = false; | |
1551 | |
1552 // Allocate result | |
1553 int num_fields; | |
1554 | |
1555 if (publicOnly) { | |
1556 num_fields = 0; | |
1557 for (int i = 0, j = 0; i < fields_len; i += instanceKlass::next_offset, j++) { | |
1558 int mods = fields->ushort_at(i + instanceKlass::access_flags_offset) & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
1559 if (mods & JVM_ACC_PUBLIC) ++num_fields; | |
1560 } | |
1561 } else { | |
1562 num_fields = fields_len / instanceKlass::next_offset; | |
1563 | |
1564 if (k() == SystemDictionary::throwable_klass()) { | |
1565 num_fields--; | |
1566 skip_backtrace = true; | |
1567 } | |
1568 } | |
1569 | |
1570 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_field_klass(), num_fields, CHECK_NULL); | |
1571 objArrayHandle result (THREAD, r); | |
1572 | |
1573 int out_idx = 0; | |
1574 fieldDescriptor fd; | |
1575 for (int i = 0; i < fields_len; i += instanceKlass::next_offset) { | |
1576 if (skip_backtrace) { | |
1577 // 4496456 skip java.lang.Throwable.backtrace | |
1578 int offset = k->offset_from_fields(i); | |
1579 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; | |
1580 } | |
1581 | |
1582 int mods = fields->ushort_at(i + instanceKlass::access_flags_offset) & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
1583 if (!publicOnly || (mods & JVM_ACC_PUBLIC)) { | |
1584 fd.initialize(k(), i); | |
1585 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); | |
1586 result->obj_at_put(out_idx, field); | |
1587 ++out_idx; | |
1588 } | |
1589 } | |
1590 assert(out_idx == num_fields, "just checking"); | |
1591 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1592 } | |
1593 JVM_END | |
1594 | |
1595 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1596 { | |
1597 JVMWrapper("JVM_GetClassDeclaredMethods"); | |
1598 JvmtiVMObjectAllocEventCollector oam; | |
1599 | |
1600 // Exclude primitive types and array types | |
1601 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
1602 || Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { | |
1603 // Return empty array | |
1604 oop res = oopFactory::new_objArray(SystemDictionary::reflect_method_klass(), 0, CHECK_NULL); | |
1605 return (jobjectArray) JNIHandles::make_local(env, res); | |
1606 } | |
1607 | |
1608 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
1609 | |
1610 // Ensure class is linked | |
1611 k->link_class(CHECK_NULL); | |
1612 | |
1613 objArrayHandle methods (THREAD, k->methods()); | |
1614 int methods_length = methods->length(); | |
1615 int num_methods = 0; | |
1616 | |
1617 int i; | |
1618 for (i = 0; i < methods_length; i++) { | |
1619 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
1620 if (!method->is_initializer()) { | |
1621 if (!publicOnly || method->is_public()) { | |
1622 ++num_methods; | |
1623 } | |
1624 } | |
1625 } | |
1626 | |
1627 // Allocate result | |
1628 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_method_klass(), num_methods, CHECK_NULL); | |
1629 objArrayHandle result (THREAD, r); | |
1630 | |
1631 int out_idx = 0; | |
1632 for (i = 0; i < methods_length; i++) { | |
1633 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
1634 if (!method->is_initializer()) { | |
1635 if (!publicOnly || method->is_public()) { | |
1636 oop m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); | |
1637 result->obj_at_put(out_idx, m); | |
1638 ++out_idx; | |
1639 } | |
1640 } | |
1641 } | |
1642 assert(out_idx == num_methods, "just checking"); | |
1643 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1644 } | |
1645 JVM_END | |
1646 | |
1647 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1648 { | |
1649 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
1650 JvmtiVMObjectAllocEventCollector oam; | |
1651 | |
1652 // Exclude primitive types and array types | |
1653 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
1654 || Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { | |
1655 // Return empty array | |
1656 oop res = oopFactory::new_objArray(SystemDictionary::reflect_constructor_klass(), 0 , CHECK_NULL); | |
1657 return (jobjectArray) JNIHandles::make_local(env, res); | |
1658 } | |
1659 | |
1660 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
1661 | |
1662 // Ensure class is linked | |
1663 k->link_class(CHECK_NULL); | |
1664 | |
1665 objArrayHandle methods (THREAD, k->methods()); | |
1666 int methods_length = methods->length(); | |
1667 int num_constructors = 0; | |
1668 | |
1669 int i; | |
1670 for (i = 0; i < methods_length; i++) { | |
1671 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
1672 if (method->is_initializer() && !method->is_static()) { | |
1673 if (!publicOnly || method->is_public()) { | |
1674 ++num_constructors; | |
1675 } | |
1676 } | |
1677 } | |
1678 | |
1679 // Allocate result | |
1680 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_constructor_klass(), num_constructors, CHECK_NULL); | |
1681 objArrayHandle result(THREAD, r); | |
1682 | |
1683 int out_idx = 0; | |
1684 for (i = 0; i < methods_length; i++) { | |
1685 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
1686 if (method->is_initializer() && !method->is_static()) { | |
1687 if (!publicOnly || method->is_public()) { | |
1688 oop m = Reflection::new_constructor(method, CHECK_NULL); | |
1689 result->obj_at_put(out_idx, m); | |
1690 ++out_idx; | |
1691 } | |
1692 } | |
1693 } | |
1694 assert(out_idx == num_constructors, "just checking"); | |
1695 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1696 } | |
1697 JVM_END | |
1698 | |
1699 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
1700 { | |
1701 JVMWrapper("JVM_GetClassAccessFlags"); | |
1702 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1703 // Primitive type | |
1704 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1705 } | |
1706 | |
1707 Klass* k = Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls))); | |
1708 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; | |
1709 } | |
1710 JVM_END | |
1711 | |
1712 | |
1713 // Constant pool access ////////////////////////////////////////////////////////// | |
1714 | |
1715 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
1716 { | |
1717 JVMWrapper("JVM_GetClassConstantPool"); | |
1718 JvmtiVMObjectAllocEventCollector oam; | |
1719 | |
1720 // Return null for primitives and arrays | |
1721 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1722 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
1723 if (Klass::cast(k)->oop_is_instance()) { | |
1724 instanceKlassHandle k_h(THREAD, k); | |
1725 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
1726 sun_reflect_ConstantPool::set_cp_oop(jcp(), k_h->constants()); | |
1727 return JNIHandles::make_local(jcp()); | |
1728 } | |
1729 } | |
1730 return NULL; | |
1731 } | |
1732 JVM_END | |
1733 | |
1734 | |
1735 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject unused, jobject jcpool)) | |
1736 { | |
1737 JVMWrapper("JVM_ConstantPoolGetSize"); | |
1738 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1739 return cp->length(); | |
1740 } | |
1741 JVM_END | |
1742 | |
1743 | |
1744 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { | |
1745 if (!cp->is_within_bounds(index)) { | |
1746 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); | |
1747 } | |
1748 } | |
1749 | |
1750 | |
1751 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1752 { | |
1753 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
1754 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1755 bounds_check(cp, index, CHECK_NULL); | |
1756 constantTag tag = cp->tag_at(index); | |
1757 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
1758 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1759 } | |
1760 klassOop k = cp->klass_at(index, CHECK_NULL); | |
1761 return (jclass) JNIHandles::make_local(k->klass_part()->java_mirror()); | |
1762 } | |
1763 JVM_END | |
1764 | |
1765 | |
1766 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1767 { | |
1768 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
1769 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1770 bounds_check(cp, index, CHECK_NULL); | |
1771 constantTag tag = cp->tag_at(index); | |
1772 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
1773 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1774 } | |
1775 klassOop k = constantPoolOopDesc::klass_at_if_loaded(cp, index); | |
1776 if (k == NULL) return NULL; | |
1777 return (jclass) JNIHandles::make_local(k->klass_part()->java_mirror()); | |
1778 } | |
1779 JVM_END | |
1780 | |
1781 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
1782 constantTag tag = cp->tag_at(index); | |
1783 if (!tag.is_method() && !tag.is_interface_method()) { | |
1784 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1785 } | |
1786 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
1787 klassOop k_o; | |
1788 if (force_resolution) { | |
1789 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
1790 } else { | |
1791 k_o = constantPoolOopDesc::klass_at_if_loaded(cp, klass_ref); | |
1792 if (k_o == NULL) return NULL; | |
1793 } | |
1794 instanceKlassHandle k(THREAD, k_o); | |
1795 symbolOop name = cp->uncached_name_ref_at(index); | |
1796 symbolOop sig = cp->uncached_signature_ref_at(index); | |
1797 methodHandle m (THREAD, k->find_method(name, sig)); | |
1798 if (m.is_null()) { | |
1799 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
1800 } | |
1801 oop method; | |
1802 if (!m->is_initializer() || m->is_static()) { | |
1803 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
1804 } else { | |
1805 method = Reflection::new_constructor(m, CHECK_NULL); | |
1806 } | |
1807 return JNIHandles::make_local(method); | |
1808 } | |
1809 | |
1810 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1811 { | |
1812 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
1813 JvmtiVMObjectAllocEventCollector oam; | |
1814 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1815 bounds_check(cp, index, CHECK_NULL); | |
1816 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
1817 return res; | |
1818 } | |
1819 JVM_END | |
1820 | |
1821 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1822 { | |
1823 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
1824 JvmtiVMObjectAllocEventCollector oam; | |
1825 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1826 bounds_check(cp, index, CHECK_NULL); | |
1827 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
1828 return res; | |
1829 } | |
1830 JVM_END | |
1831 | |
1832 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
1833 constantTag tag = cp->tag_at(index); | |
1834 if (!tag.is_field()) { | |
1835 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1836 } | |
1837 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
1838 klassOop k_o; | |
1839 if (force_resolution) { | |
1840 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
1841 } else { | |
1842 k_o = constantPoolOopDesc::klass_at_if_loaded(cp, klass_ref); | |
1843 if (k_o == NULL) return NULL; | |
1844 } | |
1845 instanceKlassHandle k(THREAD, k_o); | |
1846 symbolOop name = cp->uncached_name_ref_at(index); | |
1847 symbolOop sig = cp->uncached_signature_ref_at(index); | |
1848 fieldDescriptor fd; | |
1849 klassOop target_klass = k->find_field(name, sig, &fd); | |
1850 if (target_klass == NULL) { | |
1851 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
1852 } | |
1853 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
1854 return JNIHandles::make_local(field); | |
1855 } | |
1856 | |
1857 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1858 { | |
1859 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
1860 JvmtiVMObjectAllocEventCollector oam; | |
1861 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1862 bounds_check(cp, index, CHECK_NULL); | |
1863 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
1864 return res; | |
1865 } | |
1866 JVM_END | |
1867 | |
1868 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1869 { | |
1870 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
1871 JvmtiVMObjectAllocEventCollector oam; | |
1872 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1873 bounds_check(cp, index, CHECK_NULL); | |
1874 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
1875 return res; | |
1876 } | |
1877 JVM_END | |
1878 | |
1879 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1880 { | |
1881 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
1882 JvmtiVMObjectAllocEventCollector oam; | |
1883 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1884 bounds_check(cp, index, CHECK_NULL); | |
1885 constantTag tag = cp->tag_at(index); | |
1886 if (!tag.is_field_or_method()) { | |
1887 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1888 } | |
1889 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
1890 symbolHandle klass_name (THREAD, cp->klass_name_at(klass_ref)); | |
1891 symbolHandle member_name(THREAD, cp->uncached_name_ref_at(index)); | |
1892 symbolHandle member_sig (THREAD, cp->uncached_signature_ref_at(index)); | |
1893 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::string_klass(), 3, CHECK_NULL); | |
1894 objArrayHandle dest(THREAD, dest_o); | |
1895 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
1896 dest->obj_at_put(0, str()); | |
1897 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
1898 dest->obj_at_put(1, str()); | |
1899 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
1900 dest->obj_at_put(2, str()); | |
1901 return (jobjectArray) JNIHandles::make_local(dest()); | |
1902 } | |
1903 JVM_END | |
1904 | |
1905 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1906 { | |
1907 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
1908 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1909 bounds_check(cp, index, CHECK_0); | |
1910 constantTag tag = cp->tag_at(index); | |
1911 if (!tag.is_int()) { | |
1912 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1913 } | |
1914 return cp->int_at(index); | |
1915 } | |
1916 JVM_END | |
1917 | |
1918 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1919 { | |
1920 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
1921 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1922 bounds_check(cp, index, CHECK_(0L)); | |
1923 constantTag tag = cp->tag_at(index); | |
1924 if (!tag.is_long()) { | |
1925 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1926 } | |
1927 return cp->long_at(index); | |
1928 } | |
1929 JVM_END | |
1930 | |
1931 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1932 { | |
1933 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
1934 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1935 bounds_check(cp, index, CHECK_(0.0f)); | |
1936 constantTag tag = cp->tag_at(index); | |
1937 if (!tag.is_float()) { | |
1938 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1939 } | |
1940 return cp->float_at(index); | |
1941 } | |
1942 JVM_END | |
1943 | |
1944 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1945 { | |
1946 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
1947 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1948 bounds_check(cp, index, CHECK_(0.0)); | |
1949 constantTag tag = cp->tag_at(index); | |
1950 if (!tag.is_double()) { | |
1951 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1952 } | |
1953 return cp->double_at(index); | |
1954 } | |
1955 JVM_END | |
1956 | |
1957 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1958 { | |
1959 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
1960 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1961 bounds_check(cp, index, CHECK_NULL); | |
1962 constantTag tag = cp->tag_at(index); | |
1963 if (!tag.is_string() && !tag.is_unresolved_string()) { | |
1964 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1965 } | |
1966 oop str = cp->string_at(index, CHECK_NULL); | |
1967 return (jstring) JNIHandles::make_local(str); | |
1968 } | |
1969 JVM_END | |
1970 | |
1971 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1972 { | |
1973 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
1974 JvmtiVMObjectAllocEventCollector oam; | |
1975 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1976 bounds_check(cp, index, CHECK_NULL); | |
1977 constantTag tag = cp->tag_at(index); | |
1978 if (!tag.is_symbol()) { | |
1979 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1980 } | |
1981 symbolOop sym_o = cp->symbol_at(index); | |
1982 symbolHandle sym(THREAD, sym_o); | |
1983 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
1984 return (jstring) JNIHandles::make_local(str()); | |
1985 } | |
1986 JVM_END | |
1987 | |
1988 | |
1989 // Assertion support. ////////////////////////////////////////////////////////// | |
1990 | |
1991 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
1992 JVMWrapper("JVM_DesiredAssertionStatus"); | |
1993 assert(cls != NULL, "bad class"); | |
1994 | |
1995 oop r = JNIHandles::resolve(cls); | |
1996 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
1997 if (java_lang_Class::is_primitive(r)) return false; | |
1998 | |
1999 klassOop k = java_lang_Class::as_klassOop(r); | |
2000 assert(Klass::cast(k)->oop_is_instance(), "must be an instance klass"); | |
2001 if (! Klass::cast(k)->oop_is_instance()) return false; | |
2002 | |
2003 ResourceMark rm(THREAD); | |
2004 const char* name = Klass::cast(k)->name()->as_C_string(); | |
2005 bool system_class = Klass::cast(k)->class_loader() == NULL; | |
2006 return JavaAssertions::enabled(name, system_class); | |
2007 | |
2008 JVM_END | |
2009 | |
2010 | |
2011 // Return a new AssertionStatusDirectives object with the fields filled in with | |
2012 // command-line assertion arguments (i.e., -ea, -da). | |
2013 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
2014 JVMWrapper("JVM_AssertionStatusDirectives"); | |
2015 JvmtiVMObjectAllocEventCollector oam; | |
2016 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
2017 return JNIHandles::make_local(env, asd); | |
2018 JVM_END | |
2019 | |
2020 // Verification //////////////////////////////////////////////////////////////////////////////// | |
2021 | |
2022 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
2023 | |
2024 // RedefineClasses support: bug 6214132 caused verification to fail. | |
2025 // All functions from this section should call the jvmtiThreadSate function: | |
2026 // klassOop class_to_verify_considering_redefinition(klassOop klass). | |
2027 // The function returns a klassOop of the _scratch_class if the verifier | |
2028 // was invoked in the middle of the class redefinition. | |
2029 // Otherwise it returns its argument value which is the _the_class klassOop. | |
2030 // Please, refer to the description in the jvmtiThreadSate.hpp. | |
2031 | |
2032 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
2033 JVMWrapper("JVM_GetClassNameUTF"); | |
2034 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2035 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2036 return Klass::cast(k)->name()->as_utf8(); | |
2037 JVM_END | |
2038 | |
2039 | |
2040 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
2041 JVMWrapper("JVM_GetClassCPTypes"); | |
2042 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2043 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2044 // types will have length zero if this is not an instanceKlass | |
2045 // (length is determined by call to JVM_GetClassCPEntriesCount) | |
2046 if (Klass::cast(k)->oop_is_instance()) { | |
2047 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2048 for (int index = cp->length() - 1; index >= 0; index--) { | |
2049 constantTag tag = cp->tag_at(index); | |
2050 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : | |
2051 (tag.is_unresolved_string()) ? JVM_CONSTANT_String : tag.value(); | |
2052 } | |
2053 } | |
2054 JVM_END | |
2055 | |
2056 | |
2057 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
2058 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
2059 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2060 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2061 if (!Klass::cast(k)->oop_is_instance()) | |
2062 return 0; | |
2063 return instanceKlass::cast(k)->constants()->length(); | |
2064 JVM_END | |
2065 | |
2066 | |
2067 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
2068 JVMWrapper("JVM_GetClassFieldsCount"); | |
2069 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2070 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2071 if (!Klass::cast(k)->oop_is_instance()) | |
2072 return 0; | |
2073 return instanceKlass::cast(k)->fields()->length() / instanceKlass::next_offset; | |
2074 JVM_END | |
2075 | |
2076 | |
2077 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
2078 JVMWrapper("JVM_GetClassMethodsCount"); | |
2079 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2080 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2081 if (!Klass::cast(k)->oop_is_instance()) | |
2082 return 0; | |
2083 return instanceKlass::cast(k)->methods()->length(); | |
2084 JVM_END | |
2085 | |
2086 | |
2087 // The following methods, used for the verifier, are never called with | |
2088 // array klasses, so a direct cast to instanceKlass is safe. | |
2089 // Typically, these methods are called in a loop with bounds determined | |
2090 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
2091 // zero for arrays. | |
2092 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
2093 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
2094 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2095 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2096 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2097 int length = methodOop(method)->checked_exceptions_length(); | |
2098 if (length > 0) { | |
2099 CheckedExceptionElement* table= methodOop(method)->checked_exceptions_start(); | |
2100 for (int i = 0; i < length; i++) { | |
2101 exceptions[i] = table[i].class_cp_index; | |
2102 } | |
2103 } | |
2104 JVM_END | |
2105 | |
2106 | |
2107 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
2108 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
2109 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2110 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2111 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2112 return methodOop(method)->checked_exceptions_length(); | |
2113 JVM_END | |
2114 | |
2115 | |
2116 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
2117 JVMWrapper("JVM_GetMethodIxByteCode"); | |
2118 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2119 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2120 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2121 memcpy(code, methodOop(method)->code_base(), methodOop(method)->code_size()); | |
2122 JVM_END | |
2123 | |
2124 | |
2125 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
2126 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
2127 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2128 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2129 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2130 return methodOop(method)->code_size(); | |
2131 JVM_END | |
2132 | |
2133 | |
2134 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
2135 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
2136 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2137 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2138 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2139 typeArrayOop extable = methodOop(method)->exception_table(); | |
2140 entry->start_pc = extable->int_at(entry_index * 4); | |
2141 entry->end_pc = extable->int_at(entry_index * 4 + 1); | |
2142 entry->handler_pc = extable->int_at(entry_index * 4 + 2); | |
2143 entry->catchType = extable->int_at(entry_index * 4 + 3); | |
2144 JVM_END | |
2145 | |
2146 | |
2147 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
2148 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
2149 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2150 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2151 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2152 return methodOop(method)->exception_table()->length() / 4; | |
2153 JVM_END | |
2154 | |
2155 | |
2156 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
2157 JVMWrapper("JVM_GetMethodIxModifiers"); | |
2158 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2159 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2160 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2161 return methodOop(method)->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
2162 JVM_END | |
2163 | |
2164 | |
2165 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
2166 JVMWrapper("JVM_GetFieldIxModifiers"); | |
2167 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2168 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2169 typeArrayOop fields = instanceKlass::cast(k)->fields(); | |
2170 return fields->ushort_at(field_index * instanceKlass::next_offset + instanceKlass::access_flags_offset) & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
2171 JVM_END | |
2172 | |
2173 | |
2174 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
2175 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
2176 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2177 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2178 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2179 return methodOop(method)->max_locals(); | |
2180 JVM_END | |
2181 | |
2182 | |
2183 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
2184 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
2185 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2186 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2187 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2188 return methodOop(method)->size_of_parameters(); | |
2189 JVM_END | |
2190 | |
2191 | |
2192 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
2193 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
2194 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2195 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2196 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2197 return methodOop(method)->max_stack(); | |
2198 JVM_END | |
2199 | |
2200 | |
2201 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
2202 JVMWrapper("JVM_IsConstructorIx"); | |
2203 ResourceMark rm(THREAD); | |
2204 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2205 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2206 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2207 return methodOop(method)->name() == vmSymbols::object_initializer_name(); | |
2208 JVM_END | |
2209 | |
2210 | |
2211 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) | |
2212 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
2213 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2214 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2215 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2216 return methodOop(method)->name()->as_utf8(); | |
2217 JVM_END | |
2218 | |
2219 | |
2220 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
2221 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
2222 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2223 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2224 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2225 return methodOop(method)->signature()->as_utf8(); | |
2226 JVM_END | |
2227 | |
2228 /** | |
2229 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
2230 * read entries in the constant pool. Since the old verifier always | |
2231 * works on a copy of the code, it will not see any rewriting that | |
2232 * may possibly occur in the middle of verification. So it is important | |
2233 * that nothing it calls tries to use the cpCache instead of the raw | |
2234 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
2235 */ | |
2236 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2237 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
2238 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2239 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2240 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2241 switch (cp->tag_at(cp_index).value()) { | |
2242 case JVM_CONSTANT_Fieldref: | |
2243 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
2244 default: | |
2245 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
2246 } | |
2247 ShouldNotReachHere(); | |
2248 return NULL; | |
2249 JVM_END | |
2250 | |
2251 | |
2252 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2253 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
2254 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2255 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2256 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2257 switch (cp->tag_at(cp_index).value()) { | |
2258 case JVM_CONSTANT_InterfaceMethodref: | |
2259 case JVM_CONSTANT_Methodref: | |
1059
389049f3f393
6858164: invokedynamic code needs some cleanup (post-6655638)
jrose
parents:
973
diff
changeset
|
2260 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2261 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
2262 default: | |
2263 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
2264 } | |
2265 ShouldNotReachHere(); | |
2266 return NULL; | |
2267 JVM_END | |
2268 | |
2269 | |
2270 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2271 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
2272 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2273 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2274 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2275 switch (cp->tag_at(cp_index).value()) { | |
2276 case JVM_CONSTANT_InterfaceMethodref: | |
2277 case JVM_CONSTANT_Methodref: | |
1059
389049f3f393
6858164: invokedynamic code needs some cleanup (post-6655638)
jrose
parents:
973
diff
changeset
|
2278 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2279 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
2280 default: | |
2281 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
2282 } | |
2283 ShouldNotReachHere(); | |
2284 return NULL; | |
2285 JVM_END | |
2286 | |
2287 | |
2288 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2289 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
2290 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2291 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2292 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2293 switch (cp->tag_at(cp_index).value()) { | |
2294 case JVM_CONSTANT_Fieldref: | |
2295 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
2296 default: | |
2297 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
2298 } | |
2299 ShouldNotReachHere(); | |
2300 return NULL; | |
2301 JVM_END | |
2302 | |
2303 | |
2304 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2305 JVMWrapper("JVM_GetCPClassNameUTF"); | |
2306 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2307 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2308 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2309 symbolOop classname = cp->klass_name_at(cp_index); | |
2310 return classname->as_utf8(); | |
2311 JVM_END | |
2312 | |
2313 | |
2314 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2315 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
2316 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2317 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2318 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2319 switch (cp->tag_at(cp_index).value()) { | |
2320 case JVM_CONSTANT_Fieldref: { | |
2321 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
2322 symbolOop classname = cp->klass_name_at(class_index); | |
2323 return classname->as_utf8(); | |
2324 } | |
2325 default: | |
2326 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
2327 } | |
2328 ShouldNotReachHere(); | |
2329 return NULL; | |
2330 JVM_END | |
2331 | |
2332 | |
2333 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2334 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
2335 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2336 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2337 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2338 switch (cp->tag_at(cp_index).value()) { | |
2339 case JVM_CONSTANT_Methodref: | |
2340 case JVM_CONSTANT_InterfaceMethodref: { | |
2341 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
2342 symbolOop classname = cp->klass_name_at(class_index); | |
2343 return classname->as_utf8(); | |
2344 } | |
2345 default: | |
2346 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
2347 } | |
2348 ShouldNotReachHere(); | |
2349 return NULL; | |
2350 JVM_END | |
2351 | |
2352 | |
2353 JVM_QUICK_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
2354 JVMWrapper("JVM_GetCPFieldModifiers"); | |
2355 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2356 klassOop k_called = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(called_cls)); | |
2357 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2358 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
2359 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2360 constantPoolOop cp_called = instanceKlass::cast(k_called)->constants(); | |
2361 switch (cp->tag_at(cp_index).value()) { | |
2362 case JVM_CONSTANT_Fieldref: { | |
2363 symbolOop name = cp->uncached_name_ref_at(cp_index); | |
2364 symbolOop signature = cp->uncached_signature_ref_at(cp_index); | |
2365 typeArrayOop fields = instanceKlass::cast(k_called)->fields(); | |
2366 int fields_count = fields->length(); | |
2367 for (int i = 0; i < fields_count; i += instanceKlass::next_offset) { | |
2368 if (cp_called->symbol_at(fields->ushort_at(i + instanceKlass::name_index_offset)) == name && | |
2369 cp_called->symbol_at(fields->ushort_at(i + instanceKlass::signature_index_offset)) == signature) { | |
2370 return fields->ushort_at(i + instanceKlass::access_flags_offset) & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
2371 } | |
2372 } | |
2373 return -1; | |
2374 } | |
2375 default: | |
2376 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
2377 } | |
2378 ShouldNotReachHere(); | |
2379 return 0; | |
2380 JVM_END | |
2381 | |
2382 | |
2383 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
2384 JVMWrapper("JVM_GetCPMethodModifiers"); | |
2385 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2386 klassOop k_called = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(called_cls)); | |
2387 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2388 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
2389 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2390 switch (cp->tag_at(cp_index).value()) { | |
2391 case JVM_CONSTANT_Methodref: | |
2392 case JVM_CONSTANT_InterfaceMethodref: { | |
2393 symbolOop name = cp->uncached_name_ref_at(cp_index); | |
2394 symbolOop signature = cp->uncached_signature_ref_at(cp_index); | |
2395 objArrayOop methods = instanceKlass::cast(k_called)->methods(); | |
2396 int methods_count = methods->length(); | |
2397 for (int i = 0; i < methods_count; i++) { | |
2398 methodOop method = methodOop(methods->obj_at(i)); | |
2399 if (method->name() == name && method->signature() == signature) { | |
2400 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
2401 } | |
2402 } | |
2403 return -1; | |
2404 } | |
2405 default: | |
2406 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
2407 } | |
2408 ShouldNotReachHere(); | |
2409 return 0; | |
2410 JVM_END | |
2411 | |
2412 | |
2413 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
2414 | |
2415 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
2416 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
2417 JVM_END | |
2418 | |
2419 | |
2420 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
2421 JVMWrapper("JVM_IsSameClassPackage"); | |
2422 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
2423 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
2424 klassOop klass1 = java_lang_Class::as_klassOop(class1_mirror); | |
2425 klassOop klass2 = java_lang_Class::as_klassOop(class2_mirror); | |
2426 return (jboolean) Reflection::is_same_class_package(klass1, klass2); | |
2427 JVM_END | |
2428 | |
2429 | |
2430 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
2431 | |
2432 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
2433 JVMWrapper2("JVM_Open (%s)", fname); | |
2434 | |
2435 //%note jvm_r6 | |
2436 int result = hpi::open(fname, flags, mode); | |
2437 if (result >= 0) { | |
2438 return result; | |
2439 } else { | |
2440 switch(errno) { | |
2441 case EEXIST: | |
2442 return JVM_EEXIST; | |
2443 default: | |
2444 return -1; | |
2445 } | |
2446 } | |
2447 JVM_END | |
2448 | |
2449 | |
2450 JVM_LEAF(jint, JVM_Close(jint fd)) | |
2451 JVMWrapper2("JVM_Close (0x%x)", fd); | |
2452 //%note jvm_r6 | |
2453 return hpi::close(fd); | |
2454 JVM_END | |
2455 | |
2456 | |
2457 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
2458 JVMWrapper2("JVM_Read (0x%x)", fd); | |
2459 | |
2460 //%note jvm_r6 | |
2461 return (jint)hpi::read(fd, buf, nbytes); | |
2462 JVM_END | |
2463 | |
2464 | |
2465 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
2466 JVMWrapper2("JVM_Write (0x%x)", fd); | |
2467 | |
2468 //%note jvm_r6 | |
2469 return (jint)hpi::write(fd, buf, nbytes); | |
2470 JVM_END | |
2471 | |
2472 | |
2473 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
2474 JVMWrapper2("JVM_Available (0x%x)", fd); | |
2475 //%note jvm_r6 | |
2476 return hpi::available(fd, pbytes); | |
2477 JVM_END | |
2478 | |
2479 | |
2480 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
2481 JVMWrapper4("JVM_Lseek (0x%x, %Ld, %d)", fd, offset, whence); | |
2482 //%note jvm_r6 | |
2483 return hpi::lseek(fd, offset, whence); | |
2484 JVM_END | |
2485 | |
2486 | |
2487 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
2488 JVMWrapper3("JVM_SetLength (0x%x, %Ld)", fd, length); | |
2489 return hpi::ftruncate(fd, length); | |
2490 JVM_END | |
2491 | |
2492 | |
2493 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
2494 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
2495 //%note jvm_r6 | |
2496 return hpi::fsync(fd); | |
2497 JVM_END | |
2498 | |
2499 | |
2500 // Printing support ////////////////////////////////////////////////// | |
2501 extern "C" { | |
2502 | |
2503 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { | |
2504 // see bug 4399518, 4417214 | |
2505 if ((intptr_t)count <= 0) return -1; | |
2506 return vsnprintf(str, count, fmt, args); | |
2507 } | |
2508 | |
2509 | |
2510 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { | |
2511 va_list args; | |
2512 int len; | |
2513 va_start(args, fmt); | |
2514 len = jio_vsnprintf(str, count, fmt, args); | |
2515 va_end(args); | |
2516 return len; | |
2517 } | |
2518 | |
2519 | |
2520 int jio_fprintf(FILE* f, const char *fmt, ...) { | |
2521 int len; | |
2522 va_list args; | |
2523 va_start(args, fmt); | |
2524 len = jio_vfprintf(f, fmt, args); | |
2525 va_end(args); | |
2526 return len; | |
2527 } | |
2528 | |
2529 | |
2530 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { | |
2531 if (Arguments::vfprintf_hook() != NULL) { | |
2532 return Arguments::vfprintf_hook()(f, fmt, args); | |
2533 } else { | |
2534 return vfprintf(f, fmt, args); | |
2535 } | |
2536 } | |
2537 | |
2538 | |
2539 int jio_printf(const char *fmt, ...) { | |
2540 int len; | |
2541 va_list args; | |
2542 va_start(args, fmt); | |
2543 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
2544 va_end(args); | |
2545 return len; | |
2546 } | |
2547 | |
2548 | |
2549 // HotSpot specific jio method | |
2550 void jio_print(const char* s) { | |
2551 // Try to make this function as atomic as possible. | |
2552 if (Arguments::vfprintf_hook() != NULL) { | |
2553 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
2554 } else { | |
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
431
diff
changeset
|
2555 // Make an unused local variable to avoid warning from gcc 4.x compiler. |
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
431
diff
changeset
|
2556 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
0 | 2557 } |
2558 } | |
2559 | |
2560 } // Extern C | |
2561 | |
2562 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
2563 | |
2564 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
2565 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
2566 // OSThread objects. The exception to this rule is when the target object is the thread | |
2567 // doing the operation, in which case we know that the thread won't exit until the | |
2568 // operation is done (all exits being voluntary). There are a few cases where it is | |
2569 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
2570 // you are alive. While these can still happen, they are not subject to deadlocks if | |
2571 // the lock is held while the operation occurs (this is not the case for suspend, for | |
2572 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
2573 // implementation is local to this file, we always lock Threads_lock for that one. | |
2574 | |
2575 static void thread_entry(JavaThread* thread, TRAPS) { | |
2576 HandleMark hm(THREAD); | |
2577 Handle obj(THREAD, thread->threadObj()); | |
2578 JavaValue result(T_VOID); | |
2579 JavaCalls::call_virtual(&result, | |
2580 obj, | |
2581 KlassHandle(THREAD, SystemDictionary::thread_klass()), | |
2582 vmSymbolHandles::run_method_name(), | |
2583 vmSymbolHandles::void_method_signature(), | |
2584 THREAD); | |
2585 } | |
2586 | |
2587 | |
2588 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
2589 JVMWrapper("JVM_StartThread"); | |
2590 JavaThread *native_thread = NULL; | |
2591 | |
2592 // We cannot hold the Threads_lock when we throw an exception, | |
2593 // due to rank ordering issues. Example: we might need to grab the | |
2594 // Heap_lock while we construct the exception. | |
2595 bool throw_illegal_thread_state = false; | |
2596 | |
2597 // We must release the Threads_lock before we can post a jvmti event | |
2598 // in Thread::start. | |
2599 { | |
2600 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
2601 // we operate. | |
2602 MutexLocker mu(Threads_lock); | |
2603 | |
2604 // Check to see if we're running a thread that's already exited or was | |
2605 // stopped (is_stillborn) or is still active (thread is not NULL). | |
2606 if (java_lang_Thread::is_stillborn(JNIHandles::resolve_non_null(jthread)) || | |
2607 java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)) != NULL) { | |
2608 throw_illegal_thread_state = true; | |
2609 } else { | |
2610 jlong size = | |
2611 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
2612 // Allocate the C++ Thread structure and create the native thread. The | |
2613 // stack size retrieved from java is signed, but the constructor takes | |
2614 // size_t (an unsigned type), so avoid passing negative values which would | |
2615 // result in really large stacks. | |
2616 size_t sz = size > 0 ? (size_t) size : 0; | |
2617 native_thread = new JavaThread(&thread_entry, sz); | |
2618 | |
2619 // At this point it may be possible that no osthread was created for the | |
2620 // JavaThread due to lack of memory. Check for this situation and throw | |
2621 // an exception if necessary. Eventually we may want to change this so | |
2622 // that we only grab the lock if the thread was created successfully - | |
2623 // then we can also do this check and throw the exception in the | |
2624 // JavaThread constructor. | |
2625 if (native_thread->osthread() != NULL) { | |
2626 // Note: the current thread is not being used within "prepare". | |
2627 native_thread->prepare(jthread); | |
2628 } | |
2629 } | |
2630 } | |
2631 | |
2632 if (throw_illegal_thread_state) { | |
2633 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
2634 } | |
2635 | |
2636 assert(native_thread != NULL, "Starting null thread?"); | |
2637 | |
2638 if (native_thread->osthread() == NULL) { | |
2639 // No one should hold a reference to the 'native_thread'. | |
2640 delete native_thread; | |
2641 if (JvmtiExport::should_post_resource_exhausted()) { | |
2642 JvmtiExport::post_resource_exhausted( | |
2643 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
2644 "unable to create new native thread"); | |
2645 } | |
2646 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
2647 "unable to create new native thread"); | |
2648 } | |
2649 | |
2650 Thread::start(native_thread); | |
2651 | |
2652 JVM_END | |
2653 | |
2654 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
2655 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
2656 // but is thought to be reliable and simple. In the case, where the receiver is the | |
2657 // save thread as the sender, no safepoint is needed. | |
2658 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) | |
2659 JVMWrapper("JVM_StopThread"); | |
2660 | |
2661 oop java_throwable = JNIHandles::resolve(throwable); | |
2662 if (java_throwable == NULL) { | |
2663 THROW(vmSymbols::java_lang_NullPointerException()); | |
2664 } | |
2665 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2666 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
2667 Events::log("JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", receiver, (address)java_thread, throwable); | |
2668 // First check if thread already exited | |
2669 if (receiver != NULL) { | |
2670 // Check if exception is getting thrown at self (use oop equality, since the | |
2671 // target object might exit) | |
2672 if (java_thread == thread->threadObj()) { | |
2673 // This is a change from JDK 1.1, but JDK 1.2 will also do it: | |
2674 // NOTE (from JDK 1.2): this is done solely to prevent stopped | |
2675 // threads from being restarted. | |
2676 // Fix for 4314342, 4145910, perhaps others: it now doesn't have | |
2677 // any effect on the "liveness" of a thread; see | |
2678 // JVM_IsThreadAlive, below. | |
2679 if (java_throwable->is_a(SystemDictionary::threaddeath_klass())) { | |
2680 java_lang_Thread::set_stillborn(java_thread); | |
2681 } | |
2682 THROW_OOP(java_throwable); | |
2683 } else { | |
2684 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
2685 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
2686 } | |
2687 } | |
2688 JVM_END | |
2689 | |
2690 | |
2691 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
2692 JVMWrapper("JVM_IsThreadAlive"); | |
2693 | |
2694 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
2695 return java_lang_Thread::is_alive(thread_oop); | |
2696 JVM_END | |
2697 | |
2698 | |
2699 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
2700 JVMWrapper("JVM_SuspendThread"); | |
2701 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2702 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
2703 | |
2704 if (receiver != NULL) { | |
2705 // thread has run and has not exited (still on threads list) | |
2706 | |
2707 { | |
2708 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
2709 if (receiver->is_external_suspend()) { | |
2710 // Don't allow nested external suspend requests. We can't return | |
2711 // an error from this interface so just ignore the problem. | |
2712 return; | |
2713 } | |
2714 if (receiver->is_exiting()) { // thread is in the process of exiting | |
2715 return; | |
2716 } | |
2717 receiver->set_external_suspend(); | |
2718 } | |
2719 | |
2720 // java_suspend() will catch threads in the process of exiting | |
2721 // and will ignore them. | |
2722 receiver->java_suspend(); | |
2723 | |
2724 // It would be nice to have the following assertion in all the | |
2725 // time, but it is possible for a racing resume request to have | |
2726 // resumed this thread right after we suspended it. Temporarily | |
2727 // enable this assertion if you are chasing a different kind of | |
2728 // bug. | |
2729 // | |
2730 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
2731 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
2732 } | |
2733 JVM_END | |
2734 | |
2735 | |
2736 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
2737 JVMWrapper("JVM_ResumeThread"); | |
2738 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
2739 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
2740 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
2741 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
2742 // looks at it. | |
2743 MutexLocker ml(Threads_lock); | |
2744 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
2745 if (thr != NULL) { | |
2746 // the thread has run and is not in the process of exiting | |
2747 thr->java_resume(); | |
2748 } | |
2749 JVM_END | |
2750 | |
2751 | |
2752 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
2753 JVMWrapper("JVM_SetThreadPriority"); | |
2754 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
2755 MutexLocker ml(Threads_lock); | |
2756 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2757 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
2758 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
2759 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
2760 Thread::set_priority(thr, (ThreadPriority)prio); | |
2761 } | |
2762 JVM_END | |
2763 | |
2764 | |
2765 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
2766 JVMWrapper("JVM_Yield"); | |
2767 if (os::dont_yield()) return; | |
2768 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. | |
2769 // Critical for similar threading behaviour | |
2770 if (ConvertYieldToSleep) { | |
2771 os::sleep(thread, MinSleepInterval, false); | |
2772 } else { | |
2773 os::yield(); | |
2774 } | |
2775 JVM_END | |
2776 | |
2777 | |
2778 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
2779 JVMWrapper("JVM_Sleep"); | |
2780 | |
2781 if (millis < 0) { | |
2782 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
2783 } | |
2784 | |
2785 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
2786 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
2787 } | |
2788 | |
2789 // Save current thread state and restore it at the end of this block. | |
2790 // And set new thread state to SLEEPING. | |
2791 JavaThreadSleepState jtss(thread); | |
2792 | |
2793 if (millis == 0) { | |
2794 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
2795 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
2796 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
2797 // for SOLARIS | |
2798 if (ConvertSleepToYield) { | |
2799 os::yield(); | |
2800 } else { | |
2801 ThreadState old_state = thread->osthread()->get_state(); | |
2802 thread->osthread()->set_state(SLEEPING); | |
2803 os::sleep(thread, MinSleepInterval, false); | |
2804 thread->osthread()->set_state(old_state); | |
2805 } | |
2806 } else { | |
2807 ThreadState old_state = thread->osthread()->get_state(); | |
2808 thread->osthread()->set_state(SLEEPING); | |
2809 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
2810 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
2811 // us while we were sleeping. We do not overwrite those. | |
2812 if (!HAS_PENDING_EXCEPTION) { | |
2813 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() | |
2814 // to properly restore the thread state. That's likely wrong. | |
2815 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
2816 } | |
2817 } | |
2818 thread->osthread()->set_state(old_state); | |
2819 } | |
2820 JVM_END | |
2821 | |
2822 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
2823 JVMWrapper("JVM_CurrentThread"); | |
2824 oop jthread = thread->threadObj(); | |
2825 assert (thread != NULL, "no current thread!"); | |
2826 return JNIHandles::make_local(env, jthread); | |
2827 JVM_END | |
2828 | |
2829 | |
2830 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
2831 JVMWrapper("JVM_CountStackFrames"); | |
2832 | |
2833 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
2834 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2835 bool throw_illegal_thread_state = false; | |
2836 int count = 0; | |
2837 | |
2838 { | |
2839 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
2840 // We need to re-resolve the java_thread, since a GC might have happened during the | |
2841 // acquire of the lock | |
2842 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
2843 | |
2844 if (thr == NULL) { | |
2845 // do nothing | |
2846 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
2847 // Check whether this java thread has been suspended already. If not, throws | |
2848 // IllegalThreadStateException. We defer to throw that exception until | |
2849 // Threads_lock is released since loading exception class has to leave VM. | |
2850 // The correct way to test a thread is actually suspended is | |
2851 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
2852 // the Threads_lock. The above tests are sufficient for our purposes | |
2853 // provided the walkability of the stack is stable - which it isn't | |
2854 // 100% but close enough for most practical purposes. | |
2855 throw_illegal_thread_state = true; | |
2856 } else { | |
2857 // Count all java activation, i.e., number of vframes | |
2858 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
2859 // Native frames are not counted | |
2860 if (!vfst.method()->is_native()) count++; | |
2861 } | |
2862 } | |
2863 } | |
2864 | |
2865 if (throw_illegal_thread_state) { | |
2866 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
2867 "this thread is not suspended"); | |
2868 } | |
2869 return count; | |
2870 JVM_END | |
2871 | |
2872 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
2873 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
2874 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
2875 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
2876 // outside the critical section. Threads_lock is hot so we want to minimize | |
2877 // the hold-time. A cleaner interface would be to decompose interrupt into | |
2878 // two steps. The 1st phase, performed under Threads_lock, would return | |
2879 // a closure that'd be invoked after Threads_lock was dropped. | |
2880 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
2881 // admit spurious wakeups. | |
2882 | |
2883 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
2884 JVMWrapper("JVM_Interrupt"); | |
2885 | |
2886 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
2887 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2888 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
2889 // We need to re-resolve the java_thread, since a GC might have happened during the | |
2890 // acquire of the lock | |
2891 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
2892 if (thr != NULL) { | |
2893 Thread::interrupt(thr); | |
2894 } | |
2895 JVM_END | |
2896 | |
2897 | |
2898 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
2899 JVMWrapper("JVM_IsInterrupted"); | |
2900 | |
2901 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
2902 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2903 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
2904 // We need to re-resolve the java_thread, since a GC might have happened during the | |
2905 // acquire of the lock | |
2906 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
2907 if (thr == NULL) { | |
2908 return JNI_FALSE; | |
2909 } else { | |
2910 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
2911 } | |
2912 JVM_END | |
2913 | |
2914 | |
2915 // Return true iff the current thread has locked the object passed in | |
2916 | |
2917 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
2918 JVMWrapper("JVM_HoldsLock"); | |
2919 assert(THREAD->is_Java_thread(), "sanity check"); | |
2920 if (obj == NULL) { | |
2921 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
2922 } | |
2923 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
2924 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
2925 JVM_END | |
2926 | |
2927 | |
2928 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
2929 JVMWrapper("JVM_DumpAllStacks"); | |
2930 VM_PrintThreads op; | |
2931 VMThread::execute(&op); | |
2932 if (JvmtiExport::should_post_data_dump()) { | |
2933 JvmtiExport::post_data_dump(); | |
2934 } | |
2935 JVM_END | |
2936 | |
2937 | |
2938 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
2939 | |
2940 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
2941 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
2942 if (jthread->privileged_stack_top() == NULL) return false; | |
2943 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
2944 oop loader = jthread->privileged_stack_top()->class_loader(); | |
2945 if (loader == NULL) return true; | |
2946 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
2947 if (trusted) return true; | |
2948 } | |
2949 return false; | |
2950 } | |
2951 | |
2952 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
2953 JVMWrapper("JVM_CurrentLoadedClass"); | |
2954 ResourceMark rm(THREAD); | |
2955 | |
2956 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
2957 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
2958 bool trusted = is_trusted_frame(thread, &vfst); | |
2959 if (trusted) return NULL; | |
2960 | |
2961 methodOop m = vfst.method(); | |
2962 if (!m->is_native()) { | |
2963 klassOop holder = m->method_holder(); | |
2964 oop loader = instanceKlass::cast(holder)->class_loader(); | |
2965 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { | |
2966 return (jclass) JNIHandles::make_local(env, Klass::cast(holder)->java_mirror()); | |
2967 } | |
2968 } | |
2969 } | |
2970 return NULL; | |
2971 JVM_END | |
2972 | |
2973 | |
2974 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
2975 JVMWrapper("JVM_CurrentClassLoader"); | |
2976 ResourceMark rm(THREAD); | |
2977 | |
2978 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
2979 | |
2980 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
2981 bool trusted = is_trusted_frame(thread, &vfst); | |
2982 if (trusted) return NULL; | |
2983 | |
2984 methodOop m = vfst.method(); | |
2985 if (!m->is_native()) { | |
2986 klassOop holder = m->method_holder(); | |
2987 assert(holder->is_klass(), "just checking"); | |
2988 oop loader = instanceKlass::cast(holder)->class_loader(); | |
2989 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { | |
2990 return JNIHandles::make_local(env, loader); | |
2991 } | |
2992 } | |
2993 } | |
2994 return NULL; | |
2995 JVM_END | |
2996 | |
2997 | |
2998 // Utility object for collecting method holders walking down the stack | |
2999 class KlassLink: public ResourceObj { | |
3000 public: | |
3001 KlassHandle klass; | |
3002 KlassLink* next; | |
3003 | |
3004 KlassLink(KlassHandle k) { klass = k; next = NULL; } | |
3005 }; | |
3006 | |
3007 | |
3008 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
3009 JVMWrapper("JVM_GetClassContext"); | |
3010 ResourceMark rm(THREAD); | |
3011 JvmtiVMObjectAllocEventCollector oam; | |
3012 // Collect linked list of (handles to) method holders | |
3013 KlassLink* first = NULL; | |
3014 KlassLink* last = NULL; | |
3015 int depth = 0; | |
3016 | |
3017 for(vframeStream vfst(thread); !vfst.at_end(); vfst.security_get_caller_frame(1)) { | |
3018 // Native frames are not returned | |
3019 if (!vfst.method()->is_native()) { | |
3020 klassOop holder = vfst.method()->method_holder(); | |
3021 assert(holder->is_klass(), "just checking"); | |
3022 depth++; | |
3023 KlassLink* l = new KlassLink(KlassHandle(thread, holder)); | |
3024 if (first == NULL) { | |
3025 first = last = l; | |
3026 } else { | |
3027 last->next = l; | |
3028 last = l; | |
3029 } | |
3030 } | |
3031 } | |
3032 | |
3033 // Create result array of type [Ljava/lang/Class; | |
3034 objArrayOop result = oopFactory::new_objArray(SystemDictionary::class_klass(), depth, CHECK_NULL); | |
3035 // Fill in mirrors corresponding to method holders | |
3036 int index = 0; | |
3037 while (first != NULL) { | |
3038 result->obj_at_put(index++, Klass::cast(first->klass())->java_mirror()); | |
3039 first = first->next; | |
3040 } | |
3041 assert(index == depth, "just checking"); | |
3042 | |
3043 return (jobjectArray) JNIHandles::make_local(env, result); | |
3044 JVM_END | |
3045 | |
3046 | |
3047 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
3048 JVMWrapper("JVM_ClassDepth"); | |
3049 ResourceMark rm(THREAD); | |
3050 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
3051 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
3052 | |
3053 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
3054 symbolHandle class_name_sym = | |
3055 symbolHandle(THREAD, SymbolTable::probe(str, (int)strlen(str))); | |
3056 if (class_name_sym.is_null()) { | |
3057 return -1; | |
3058 } | |
3059 | |
3060 int depth = 0; | |
3061 | |
3062 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3063 if (!vfst.method()->is_native()) { | |
3064 klassOop holder = vfst.method()->method_holder(); | |
3065 assert(holder->is_klass(), "just checking"); | |
3066 if (instanceKlass::cast(holder)->name() == class_name_sym()) { | |
3067 return depth; | |
3068 } | |
3069 depth++; | |
3070 } | |
3071 } | |
3072 return -1; | |
3073 JVM_END | |
3074 | |
3075 | |
3076 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
3077 JVMWrapper("JVM_ClassLoaderDepth"); | |
3078 ResourceMark rm(THREAD); | |
3079 int depth = 0; | |
3080 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3081 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
3082 bool trusted = is_trusted_frame(thread, &vfst); | |
3083 if (trusted) return -1; | |
3084 | |
3085 methodOop m = vfst.method(); | |
3086 if (!m->is_native()) { | |
3087 klassOop holder = m->method_holder(); | |
3088 assert(holder->is_klass(), "just checking"); | |
3089 oop loader = instanceKlass::cast(holder)->class_loader(); | |
3090 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { | |
3091 return depth; | |
3092 } | |
3093 depth++; | |
3094 } | |
3095 } | |
3096 return -1; | |
3097 JVM_END | |
3098 | |
3099 | |
3100 // java.lang.Package //////////////////////////////////////////////////////////////// | |
3101 | |
3102 | |
3103 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
3104 JVMWrapper("JVM_GetSystemPackage"); | |
3105 ResourceMark rm(THREAD); | |
3106 JvmtiVMObjectAllocEventCollector oam; | |
3107 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3108 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
3109 return (jstring) JNIHandles::make_local(result); | |
3110 JVM_END | |
3111 | |
3112 | |
3113 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
3114 JVMWrapper("JVM_GetSystemPackages"); | |
3115 JvmtiVMObjectAllocEventCollector oam; | |
3116 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
3117 return (jobjectArray) JNIHandles::make_local(result); | |
3118 JVM_END | |
3119 | |
3120 | |
3121 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
3122 | |
3123 bool force_verify_field_access(klassOop current_class, klassOop field_class, AccessFlags access, bool classloader_only) { | |
3124 if (current_class == NULL) { | |
3125 return true; | |
3126 } | |
3127 if ((current_class == field_class) || access.is_public()) { | |
3128 return true; | |
3129 } | |
3130 | |
3131 if (access.is_protected()) { | |
3132 // See if current_class is a subclass of field_class | |
3133 if (Klass::cast(current_class)->is_subclass_of(field_class)) { | |
3134 return true; | |
3135 } | |
3136 } | |
3137 | |
3138 return (!access.is_private() && instanceKlass::cast(current_class)->is_same_class_package(field_class)); | |
3139 } | |
3140 | |
3141 | |
3142 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
3143 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
3144 JVMWrapper("JVM_AllocateNewObject"); | |
3145 JvmtiVMObjectAllocEventCollector oam; | |
3146 // Receiver is not used | |
3147 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
3148 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
3149 | |
3150 // Cannot instantiate primitive types | |
3151 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
3152 ResourceMark rm(THREAD); | |
3153 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3154 } | |
3155 | |
3156 // Arrays not allowed here, must use JVM_AllocateNewArray | |
3157 if (Klass::cast(java_lang_Class::as_klassOop(curr_mirror))->oop_is_javaArray() || | |
3158 Klass::cast(java_lang_Class::as_klassOop(init_mirror))->oop_is_javaArray()) { | |
3159 ResourceMark rm(THREAD); | |
3160 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3161 } | |
3162 | |
3163 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_klassOop(curr_mirror)); | |
3164 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_klassOop(init_mirror)); | |
3165 | |
3166 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
3167 | |
3168 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
3169 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
3170 | |
3171 // Make sure klass is initialized, since we are about to instantiate one of them. | |
3172 curr_klass->initialize(CHECK_NULL); | |
3173 | |
3174 methodHandle m (THREAD, | |
3175 init_klass->find_method(vmSymbols::object_initializer_name(), | |
3176 vmSymbols::void_method_signature())); | |
3177 if (m.is_null()) { | |
3178 ResourceMark rm(THREAD); | |
3179 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
3180 methodOopDesc::name_and_sig_as_C_string(Klass::cast(init_klass()), | |
3181 vmSymbols::object_initializer_name(), | |
3182 vmSymbols::void_method_signature())); | |
3183 } | |
3184 | |
3185 if (curr_klass == init_klass && !m->is_public()) { | |
3186 // Calling the constructor for class 'curr_klass'. | |
3187 // Only allow calls to a public no-arg constructor. | |
3188 // This path corresponds to creating an Externalizable object. | |
3189 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3190 } | |
3191 | |
3192 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
3193 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
3194 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3195 } | |
3196 | |
3197 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
3198 // Call constructor m. This might call a constructor higher up in the hierachy | |
3199 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
3200 | |
3201 return JNIHandles::make_local(obj()); | |
3202 JVM_END | |
3203 | |
3204 | |
3205 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
3206 JVMWrapper("JVM_AllocateNewArray"); | |
3207 JvmtiVMObjectAllocEventCollector oam; | |
3208 oop mirror = JNIHandles::resolve_non_null(currClass); | |
3209 | |
3210 if (java_lang_Class::is_primitive(mirror)) { | |
3211 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3212 } | |
3213 klassOop k = java_lang_Class::as_klassOop(mirror); | |
3214 oop result; | |
3215 | |
3216 if (k->klass_part()->oop_is_typeArray()) { | |
3217 // typeArray | |
3218 result = typeArrayKlass::cast(k)->allocate(length, CHECK_NULL); | |
3219 } else if (k->klass_part()->oop_is_objArray()) { | |
3220 // objArray | |
3221 objArrayKlassHandle oak(THREAD, k); | |
3222 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) | |
3223 result = oak->allocate(length, CHECK_NULL); | |
3224 } else { | |
3225 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3226 } | |
3227 return JNIHandles::make_local(env, result); | |
3228 JVM_END | |
3229 | |
3230 | |
3231 // Return the first non-null class loader up the execution stack, or null | |
3232 // if only code from the null class loader is on the stack. | |
3233 | |
3234 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
3235 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3236 // UseNewReflection | |
3237 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
3238 klassOop holder = vfst.method()->method_holder(); | |
3239 oop loader = instanceKlass::cast(holder)->class_loader(); | |
3240 if (loader != NULL) { | |
3241 return JNIHandles::make_local(env, loader); | |
3242 } | |
3243 } | |
3244 return NULL; | |
3245 JVM_END | |
3246 | |
3247 | |
3248 // Load a class relative to the most recent class on the stack with a non-null | |
3249 // classloader. | |
3250 // This function has been deprecated and should not be considered part of the | |
3251 // specified JVM interface. | |
3252 | |
3253 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
3254 jclass currClass, jstring currClassName)) | |
3255 JVMWrapper("JVM_LoadClass0"); | |
3256 // Receiver is not used | |
3257 ResourceMark rm(THREAD); | |
3258 | |
3259 // Class name argument is not guaranteed to be in internal format | |
3260 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
3261 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
3262 | |
3263 const char* str = java_lang_String::as_utf8_string(string()); | |
3264 | |
3265 if (str == NULL || (int)strlen(str) > symbolOopDesc::max_length()) { | |
3266 // It's impossible to create this class; the name cannot fit | |
3267 // into the constant pool. | |
3268 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
3269 } | |
3270 | |
3271 symbolHandle name = oopFactory::new_symbol_handle(str, CHECK_NULL); | |
3272 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); | |
3273 // Find the most recent class on the stack with a non-null classloader | |
3274 oop loader = NULL; | |
3275 oop protection_domain = NULL; | |
3276 if (curr_klass.is_null()) { | |
3277 for (vframeStream vfst(thread); | |
3278 !vfst.at_end() && loader == NULL; | |
3279 vfst.next()) { | |
3280 if (!vfst.method()->is_native()) { | |
3281 klassOop holder = vfst.method()->method_holder(); | |
3282 loader = instanceKlass::cast(holder)->class_loader(); | |
3283 protection_domain = instanceKlass::cast(holder)->protection_domain(); | |
3284 } | |
3285 } | |
3286 } else { | |
3287 klassOop curr_klass_oop = java_lang_Class::as_klassOop(curr_klass()); | |
3288 loader = instanceKlass::cast(curr_klass_oop)->class_loader(); | |
3289 protection_domain = instanceKlass::cast(curr_klass_oop)->protection_domain(); | |
3290 } | |
3291 Handle h_loader(THREAD, loader); | |
3292 Handle h_prot (THREAD, protection_domain); | |
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3293 jclass result = find_class_from_class_loader(env, name, true, h_loader, h_prot, |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3294 false, thread); |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3295 if (TraceClassResolution && result != NULL) { |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3296 trace_class_resolution(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(result))); |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3297 } |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3298 return result; |
0 | 3299 JVM_END |
3300 | |
3301 | |
3302 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
3303 | |
3304 | |
3305 // resolve array handle and check arguments | |
3306 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
3307 if (arr == NULL) { | |
3308 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
3309 } | |
3310 oop a = JNIHandles::resolve_non_null(arr); | |
3311 if (!a->is_javaArray() || (type_array_only && !a->is_typeArray())) { | |
3312 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); | |
3313 } | |
3314 return arrayOop(a); | |
3315 } | |
3316 | |
3317 | |
3318 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
3319 JVMWrapper("JVM_GetArrayLength"); | |
3320 arrayOop a = check_array(env, arr, false, CHECK_0); | |
3321 return a->length(); | |
3322 JVM_END | |
3323 | |
3324 | |
3325 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
3326 JVMWrapper("JVM_Array_Get"); | |
3327 JvmtiVMObjectAllocEventCollector oam; | |
3328 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
3329 jvalue value; | |
3330 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
3331 oop box = Reflection::box(&value, type, CHECK_NULL); | |
3332 return JNIHandles::make_local(env, box); | |
3333 JVM_END | |
3334 | |
3335 | |
3336 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
3337 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
3338 jvalue value; | |
3339 value.i = 0; // to initialize value before getting used in CHECK | |
3340 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
3341 assert(a->is_typeArray(), "just checking"); | |
3342 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
3343 BasicType wide_type = (BasicType) wCode; | |
3344 if (type != wide_type) { | |
3345 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
3346 } | |
3347 return value; | |
3348 JVM_END | |
3349 | |
3350 | |
3351 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
3352 JVMWrapper("JVM_SetArrayElement"); | |
3353 arrayOop a = check_array(env, arr, false, CHECK); | |
3354 oop box = JNIHandles::resolve(val); | |
3355 jvalue value; | |
3356 value.i = 0; // to initialize value before getting used in CHECK | |
3357 BasicType value_type; | |
3358 if (a->is_objArray()) { | |
3359 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
3360 value_type = Reflection::unbox_for_regular_object(box, &value); | |
3361 } else { | |
3362 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
3363 } | |
3364 Reflection::array_set(&value, a, index, value_type, CHECK); | |
3365 JVM_END | |
3366 | |
3367 | |
3368 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
3369 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
3370 arrayOop a = check_array(env, arr, true, CHECK); | |
3371 assert(a->is_typeArray(), "just checking"); | |
3372 BasicType value_type = (BasicType) vCode; | |
3373 Reflection::array_set(&v, a, index, value_type, CHECK); | |
3374 JVM_END | |
3375 | |
3376 | |
3377 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
3378 JVMWrapper("JVM_NewArray"); | |
3379 JvmtiVMObjectAllocEventCollector oam; | |
3380 oop element_mirror = JNIHandles::resolve(eltClass); | |
3381 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
3382 return JNIHandles::make_local(env, result); | |
3383 JVM_END | |
3384 | |
3385 | |
3386 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
3387 JVMWrapper("JVM_NewMultiArray"); | |
3388 JvmtiVMObjectAllocEventCollector oam; | |
3389 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
3390 oop element_mirror = JNIHandles::resolve(eltClass); | |
3391 assert(dim_array->is_typeArray(), "just checking"); | |
3392 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
3393 return JNIHandles::make_local(env, result); | |
3394 JVM_END | |
3395 | |
3396 | |
3397 // Networking library support //////////////////////////////////////////////////////////////////// | |
3398 | |
3399 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
3400 JVMWrapper("JVM_InitializeSocketLibrary"); | |
3401 return hpi::initialize_socket_library(); | |
3402 JVM_END | |
3403 | |
3404 | |
3405 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
3406 JVMWrapper("JVM_Socket"); | |
3407 return hpi::socket(domain, type, protocol); | |
3408 JVM_END | |
3409 | |
3410 | |
3411 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
3412 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
3413 //%note jvm_r6 | |
3414 return hpi::socket_close(fd); | |
3415 JVM_END | |
3416 | |
3417 | |
3418 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
3419 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
3420 //%note jvm_r6 | |
3421 return hpi::socket_shutdown(fd, howto); | |
3422 JVM_END | |
3423 | |
3424 | |
3425 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
3426 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
3427 //%note jvm_r6 | |
3428 return hpi::recv(fd, buf, nBytes, flags); | |
3429 JVM_END | |
3430 | |
3431 | |
3432 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
3433 JVMWrapper2("JVM_Send (0x%x)", fd); | |
3434 //%note jvm_r6 | |
3435 return hpi::send(fd, buf, nBytes, flags); | |
3436 JVM_END | |
3437 | |
3438 | |
3439 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
3440 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
3441 //%note jvm_r6 | |
3442 return hpi::timeout(fd, timeout); | |
3443 JVM_END | |
3444 | |
3445 | |
3446 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
3447 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
3448 //%note jvm_r6 | |
3449 return hpi::listen(fd, count); | |
3450 JVM_END | |
3451 | |
3452 | |
3453 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
3454 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
3455 //%note jvm_r6 | |
3456 return hpi::connect(fd, him, len); | |
3457 JVM_END | |
3458 | |
3459 | |
3460 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
3461 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
3462 //%note jvm_r6 | |
3463 return hpi::bind(fd, him, len); | |
3464 JVM_END | |
3465 | |
3466 | |
3467 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
3468 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
3469 //%note jvm_r6 | |
3470 return hpi::accept(fd, him, (int *)len); | |
3471 JVM_END | |
3472 | |
3473 | |
3474 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
3475 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
3476 //%note jvm_r6 | |
3477 return hpi::recvfrom(fd, buf, nBytes, flags, from, fromlen); | |
3478 JVM_END | |
3479 | |
3480 | |
3481 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
3482 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
3483 //%note jvm_r6 | |
3484 return hpi::get_sock_name(fd, him, len); | |
3485 JVM_END | |
3486 | |
3487 | |
3488 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
3489 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
3490 //%note jvm_r6 | |
3491 return hpi::sendto(fd, buf, len, flags, to, tolen); | |
3492 JVM_END | |
3493 | |
3494 | |
3495 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
3496 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
3497 //%note jvm_r6 | |
3498 return hpi::socket_available(fd, pbytes); | |
3499 JVM_END | |
3500 | |
3501 | |
3502 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
3503 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3504 //%note jvm_r6 | |
3505 return hpi::get_sock_opt(fd, level, optname, optval, optlen); | |
3506 JVM_END | |
3507 | |
3508 | |
3509 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
3510 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3511 //%note jvm_r6 | |
3512 return hpi::set_sock_opt(fd, level, optname, optval, optlen); | |
3513 JVM_END | |
3514 | |
3515 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) | |
3516 JVMWrapper("JVM_GetHostName"); | |
3517 return hpi::get_host_name(name, namelen); | |
3518 JVM_END | |
3519 | |
3520 #ifdef _WINDOWS | |
3521 | |
3522 JVM_LEAF(struct hostent*, JVM_GetHostByAddr(const char* name, int len, int type)) | |
3523 JVMWrapper("JVM_GetHostByAddr"); | |
3524 return hpi::get_host_by_addr(name, len, type); | |
3525 JVM_END | |
3526 | |
3527 | |
3528 JVM_LEAF(struct hostent*, JVM_GetHostByName(char* name)) | |
3529 JVMWrapper("JVM_GetHostByName"); | |
3530 return hpi::get_host_by_name(name); | |
3531 JVM_END | |
3532 | |
3533 | |
3534 JVM_LEAF(struct protoent*, JVM_GetProtoByName(char* name)) | |
3535 JVMWrapper("JVM_GetProtoByName"); | |
3536 return hpi::get_proto_by_name(name); | |
3537 JVM_END | |
3538 | |
3539 #endif | |
3540 | |
3541 // Library support /////////////////////////////////////////////////////////////////////////// | |
3542 | |
3543 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
3544 //%note jvm_ct | |
3545 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
3546 char ebuf[1024]; | |
3547 void *load_result; | |
3548 { | |
3549 ThreadToNativeFromVM ttnfvm(thread); | |
3550 load_result = hpi::dll_load(name, ebuf, sizeof ebuf); | |
3551 } | |
3552 if (load_result == NULL) { | |
3553 char msg[1024]; | |
3554 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
3555 // Since 'ebuf' may contain a string encoded using | |
3556 // platform encoding scheme, we need to pass | |
3557 // Exceptions::unsafe_to_utf8 to the new_exception method | |
3558 // as the last argument. See bug 6367357. | |
3559 Handle h_exception = | |
3560 Exceptions::new_exception(thread, | |
3561 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
3562 msg, Exceptions::unsafe_to_utf8); | |
3563 | |
3564 THROW_HANDLE_0(h_exception); | |
3565 } | |
3566 return load_result; | |
3567 JVM_END | |
3568 | |
3569 | |
3570 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
3571 JVMWrapper("JVM_UnloadLibrary"); | |
3572 hpi::dll_unload(handle); | |
3573 JVM_END | |
3574 | |
3575 | |
3576 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
3577 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
3578 return hpi::dll_lookup(handle, name); | |
3579 JVM_END | |
3580 | |
3581 // Floating point support //////////////////////////////////////////////////////////////////// | |
3582 | |
3583 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
3584 JVMWrapper("JVM_IsNaN"); | |
3585 return g_isnan(a); | |
3586 JVM_END | |
3587 | |
3588 | |
3589 | |
3590 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
3591 | |
3592 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
3593 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
3594 return Threads::is_supported_jni_version_including_1_1(version); | |
3595 JVM_END | |
3596 | |
3597 | |
3598 // String support /////////////////////////////////////////////////////////////////////////// | |
3599 | |
3600 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
3601 JVMWrapper("JVM_InternString"); | |
3602 JvmtiVMObjectAllocEventCollector oam; | |
3603 if (str == NULL) return NULL; | |
3604 oop string = JNIHandles::resolve_non_null(str); | |
3605 oop result = StringTable::intern(string, CHECK_NULL); | |
3606 return (jstring) JNIHandles::make_local(env, result); | |
3607 JVM_END | |
3608 | |
3609 | |
3610 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
3611 | |
3612 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
3613 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
3614 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
3615 // that only works with java threads. | |
3616 | |
3617 | |
3618 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
3619 VM_Exit::block_if_vm_exited(); | |
3620 JVMWrapper("JVM_RawMonitorCreate"); | |
3621 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
3622 } | |
3623 | |
3624 | |
3625 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
3626 VM_Exit::block_if_vm_exited(); | |
3627 JVMWrapper("JVM_RawMonitorDestroy"); | |
3628 delete ((Mutex*) mon); | |
3629 } | |
3630 | |
3631 | |
3632 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
3633 VM_Exit::block_if_vm_exited(); | |
3634 JVMWrapper("JVM_RawMonitorEnter"); | |
3635 ((Mutex*) mon)->jvm_raw_lock(); | |
3636 return 0; | |
3637 } | |
3638 | |
3639 | |
3640 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
3641 VM_Exit::block_if_vm_exited(); | |
3642 JVMWrapper("JVM_RawMonitorExit"); | |
3643 ((Mutex*) mon)->jvm_raw_unlock(); | |
3644 } | |
3645 | |
3646 | |
3647 // Support for Serialization | |
3648 | |
3649 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
3650 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
3651 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
3652 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
3653 | |
3654 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
3655 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
3656 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
3657 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
3658 | |
3659 | |
3660 void initialize_converter_functions() { | |
3661 if (JDK_Version::is_gte_jdk14x_version()) { | |
3662 // These functions only exist for compatibility with 1.3.1 and earlier | |
3663 return; | |
3664 } | |
3665 | |
3666 // called from universe_post_init() | |
3667 assert( | |
3668 int_bits_to_float_fn == NULL && | |
3669 long_bits_to_double_fn == NULL && | |
3670 float_to_int_bits_fn == NULL && | |
3671 double_to_long_bits_fn == NULL , | |
3672 "initialization done twice" | |
3673 ); | |
3674 // initialize | |
3675 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
3676 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
3677 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
3678 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
3679 // verify | |
3680 assert( | |
3681 int_bits_to_float_fn != NULL && | |
3682 long_bits_to_double_fn != NULL && | |
3683 float_to_int_bits_fn != NULL && | |
3684 double_to_long_bits_fn != NULL , | |
3685 "initialization failed" | |
3686 ); | |
3687 } | |
3688 | |
3689 | |
3690 // Serialization | |
3691 JVM_ENTRY(void, JVM_SetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
3692 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
3693 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
3694 | |
3695 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
3696 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
3697 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
3698 oop o = JNIHandles::resolve(obj); | |
3699 | |
3700 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
3701 THROW(vmSymbols::java_lang_NullPointerException()); | |
3702 } | |
3703 | |
3704 jsize nfids = fids->length(); | |
3705 if (nfids == 0) return; | |
3706 | |
3707 if (tcodes->length() < nfids) { | |
3708 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
3709 } | |
3710 | |
3711 jsize off = 0; | |
3712 /* loop through fields, setting values */ | |
3713 for (jsize i = 0; i < nfids; i++) { | |
3714 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
3715 int field_offset; | |
3716 if (fid != NULL) { | |
3717 // NULL is a legal value for fid, but retrieving the field offset | |
3718 // trigger assertion in that case | |
3719 field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
3720 } | |
3721 | |
3722 switch (tcodes->char_at(i)) { | |
3723 case 'Z': | |
3724 if (fid != NULL) { | |
3725 jboolean val = (dbuf->byte_at(off) != 0) ? JNI_TRUE : JNI_FALSE; | |
3726 o->bool_field_put(field_offset, val); | |
3727 } | |
3728 off++; | |
3729 break; | |
3730 | |
3731 case 'B': | |
3732 if (fid != NULL) { | |
3733 o->byte_field_put(field_offset, dbuf->byte_at(off)); | |
3734 } | |
3735 off++; | |
3736 break; | |
3737 | |
3738 case 'C': | |
3739 if (fid != NULL) { | |
3740 jchar val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
3741 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
3742 o->char_field_put(field_offset, val); | |
3743 } | |
3744 off += 2; | |
3745 break; | |
3746 | |
3747 case 'S': | |
3748 if (fid != NULL) { | |
3749 jshort val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
3750 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
3751 o->short_field_put(field_offset, val); | |
3752 } | |
3753 off += 2; | |
3754 break; | |
3755 | |
3756 case 'I': | |
3757 if (fid != NULL) { | |
3758 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
3759 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
3760 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
3761 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
3762 o->int_field_put(field_offset, ival); | |
3763 } | |
3764 off += 4; | |
3765 break; | |
3766 | |
3767 case 'F': | |
3768 if (fid != NULL) { | |
3769 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
3770 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
3771 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
3772 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
3773 jfloat fval = (*int_bits_to_float_fn)(env, NULL, ival); | |
3774 o->float_field_put(field_offset, fval); | |
3775 } | |
3776 off += 4; | |
3777 break; | |
3778 | |
3779 case 'J': | |
3780 if (fid != NULL) { | |
3781 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
3782 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
3783 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
3784 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
3785 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
3786 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
3787 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
3788 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
3789 o->long_field_put(field_offset, lval); | |
3790 } | |
3791 off += 8; | |
3792 break; | |
3793 | |
3794 case 'D': | |
3795 if (fid != NULL) { | |
3796 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
3797 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
3798 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
3799 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
3800 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
3801 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
3802 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
3803 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
3804 jdouble dval = (*long_bits_to_double_fn)(env, NULL, lval); | |
3805 o->double_field_put(field_offset, dval); | |
3806 } | |
3807 off += 8; | |
3808 break; | |
3809 | |
3810 default: | |
3811 // Illegal typecode | |
3812 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
3813 } | |
3814 } | |
3815 JVM_END | |
3816 | |
3817 | |
3818 JVM_ENTRY(void, JVM_GetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
3819 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
3820 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
3821 | |
3822 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
3823 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
3824 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
3825 oop o = JNIHandles::resolve(obj); | |
3826 | |
3827 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
3828 THROW(vmSymbols::java_lang_NullPointerException()); | |
3829 } | |
3830 | |
3831 jsize nfids = fids->length(); | |
3832 if (nfids == 0) return; | |
3833 | |
3834 if (tcodes->length() < nfids) { | |
3835 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
3836 } | |
3837 | |
3838 /* loop through fields, fetching values */ | |
3839 jsize off = 0; | |
3840 for (jsize i = 0; i < nfids; i++) { | |
3841 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
3842 if (fid == NULL) { | |
3843 THROW(vmSymbols::java_lang_NullPointerException()); | |
3844 } | |
3845 int field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
3846 | |
3847 switch (tcodes->char_at(i)) { | |
3848 case 'Z': | |
3849 { | |
3850 jboolean val = o->bool_field(field_offset); | |
3851 dbuf->byte_at_put(off++, (val != 0) ? 1 : 0); | |
3852 } | |
3853 break; | |
3854 | |
3855 case 'B': | |
3856 dbuf->byte_at_put(off++, o->byte_field(field_offset)); | |
3857 break; | |
3858 | |
3859 case 'C': | |
3860 { | |
3861 jchar val = o->char_field(field_offset); | |
3862 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
3863 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
3864 } | |
3865 break; | |
3866 | |
3867 case 'S': | |
3868 { | |
3869 jshort val = o->short_field(field_offset); | |
3870 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
3871 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
3872 } | |
3873 break; | |
3874 | |
3875 case 'I': | |
3876 { | |
3877 jint val = o->int_field(field_offset); | |
3878 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
3879 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
3880 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
3881 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
3882 } | |
3883 break; | |
3884 | |
3885 case 'F': | |
3886 { | |
3887 jfloat fval = o->float_field(field_offset); | |
3888 jint ival = (*float_to_int_bits_fn)(env, NULL, fval); | |
3889 dbuf->byte_at_put(off++, (ival >> 24) & 0xFF); | |
3890 dbuf->byte_at_put(off++, (ival >> 16) & 0xFF); | |
3891 dbuf->byte_at_put(off++, (ival >> 8) & 0xFF); | |
3892 dbuf->byte_at_put(off++, (ival >> 0) & 0xFF); | |
3893 } | |
3894 break; | |
3895 | |
3896 case 'J': | |
3897 { | |
3898 jlong val = o->long_field(field_offset); | |
3899 dbuf->byte_at_put(off++, (val >> 56) & 0xFF); | |
3900 dbuf->byte_at_put(off++, (val >> 48) & 0xFF); | |
3901 dbuf->byte_at_put(off++, (val >> 40) & 0xFF); | |
3902 dbuf->byte_at_put(off++, (val >> 32) & 0xFF); | |
3903 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
3904 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
3905 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
3906 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
3907 } | |
3908 break; | |
3909 | |
3910 case 'D': | |
3911 { | |
3912 jdouble dval = o->double_field(field_offset); | |
3913 jlong lval = (*double_to_long_bits_fn)(env, NULL, dval); | |
3914 dbuf->byte_at_put(off++, (lval >> 56) & 0xFF); | |
3915 dbuf->byte_at_put(off++, (lval >> 48) & 0xFF); | |
3916 dbuf->byte_at_put(off++, (lval >> 40) & 0xFF); | |
3917 dbuf->byte_at_put(off++, (lval >> 32) & 0xFF); | |
3918 dbuf->byte_at_put(off++, (lval >> 24) & 0xFF); | |
3919 dbuf->byte_at_put(off++, (lval >> 16) & 0xFF); | |
3920 dbuf->byte_at_put(off++, (lval >> 8) & 0xFF); | |
3921 dbuf->byte_at_put(off++, (lval >> 0) & 0xFF); | |
3922 } | |
3923 break; | |
3924 | |
3925 default: | |
3926 // Illegal typecode | |
3927 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
3928 } | |
3929 } | |
3930 JVM_END | |
3931 | |
3932 | |
3933 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
3934 | |
3935 jclass find_class_from_class_loader(JNIEnv* env, symbolHandle name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS) { | |
3936 // Security Note: | |
3937 // The Java level wrapper will perform the necessary security check allowing | |
3938 // us to pass the NULL as the initiating class loader. | |
3939 klassOop klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); | |
878
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
3940 |
0 | 3941 KlassHandle klass_handle(THREAD, klass); |
3942 // Check if we should initialize the class | |
3943 if (init && klass_handle->oop_is_instance()) { | |
3944 klass_handle->initialize(CHECK_NULL); | |
3945 } | |
3946 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
3947 } | |
3948 | |
3949 | |
3950 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
3951 | |
3952 #ifndef PRODUCT | |
3953 | |
3954 extern "C" { | |
3955 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
3956 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
3957 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
3958 } | |
3959 | |
3960 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
3961 JVMWrapper("JVM_AccessBoolVMFlag"); | |
3962 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, INTERNAL); | |
3963 JVM_END | |
3964 | |
3965 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
3966 JVMWrapper("JVM_AccessVMIntFlag"); | |
3967 intx v; | |
3968 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, INTERNAL); | |
3969 *value = (jint)v; | |
3970 return result; | |
3971 JVM_END | |
3972 | |
3973 | |
3974 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
3975 JVMWrapper("JVM_VMBreakPoint"); | |
3976 oop the_obj = JNIHandles::resolve(obj); | |
3977 BREAKPOINT; | |
3978 JVM_END | |
3979 | |
3980 | |
3981 #endif | |
3982 | |
3983 | |
3984 //--------------------------------------------------------------------------- | |
3985 // | |
3986 // Support for old native code-based reflection (pre-JDK 1.4) | |
3987 // Disabled by default in the product build. | |
3988 // | |
3989 // See reflection.hpp for information on SUPPORT_OLD_REFLECTION | |
3990 // | |
3991 //--------------------------------------------------------------------------- | |
3992 | |
3993 #ifdef SUPPORT_OLD_REFLECTION | |
3994 | |
3995 JVM_ENTRY(jobjectArray, JVM_GetClassFields(JNIEnv *env, jclass cls, jint which)) | |
3996 JVMWrapper("JVM_GetClassFields"); | |
3997 JvmtiVMObjectAllocEventCollector oam; | |
3998 oop mirror = JNIHandles::resolve_non_null(cls); | |
3999 objArrayOop result = Reflection::reflect_fields(mirror, which, CHECK_NULL); | |
4000 return (jobjectArray) JNIHandles::make_local(env, result); | |
4001 JVM_END | |
4002 | |
4003 | |
4004 JVM_ENTRY(jobjectArray, JVM_GetClassMethods(JNIEnv *env, jclass cls, jint which)) | |
4005 JVMWrapper("JVM_GetClassMethods"); | |
4006 JvmtiVMObjectAllocEventCollector oam; | |
4007 oop mirror = JNIHandles::resolve_non_null(cls); | |
4008 objArrayOop result = Reflection::reflect_methods(mirror, which, CHECK_NULL); | |
4009 //%note jvm_r4 | |
4010 return (jobjectArray) JNIHandles::make_local(env, result); | |
4011 JVM_END | |
4012 | |
4013 | |
4014 JVM_ENTRY(jobjectArray, JVM_GetClassConstructors(JNIEnv *env, jclass cls, jint which)) | |
4015 JVMWrapper("JVM_GetClassConstructors"); | |
4016 JvmtiVMObjectAllocEventCollector oam; | |
4017 oop mirror = JNIHandles::resolve_non_null(cls); | |
4018 objArrayOop result = Reflection::reflect_constructors(mirror, which, CHECK_NULL); | |
4019 //%note jvm_r4 | |
4020 return (jobjectArray) JNIHandles::make_local(env, result); | |
4021 JVM_END | |
4022 | |
4023 | |
4024 JVM_ENTRY(jobject, JVM_GetClassField(JNIEnv *env, jclass cls, jstring name, jint which)) | |
4025 JVMWrapper("JVM_GetClassField"); | |
4026 JvmtiVMObjectAllocEventCollector oam; | |
4027 if (name == NULL) return NULL; | |
4028 Handle str (THREAD, JNIHandles::resolve_non_null(name)); | |
4029 | |
4030 const char* cstr = java_lang_String::as_utf8_string(str()); | |
4031 symbolHandle field_name = | |
4032 symbolHandle(THREAD, SymbolTable::probe(cstr, (int)strlen(cstr))); | |
4033 if (field_name.is_null()) { | |
4034 THROW_0(vmSymbols::java_lang_NoSuchFieldException()); | |
4035 } | |
4036 | |
4037 oop mirror = JNIHandles::resolve_non_null(cls); | |
4038 oop result = Reflection::reflect_field(mirror, field_name(), which, CHECK_NULL); | |
4039 if (result == NULL) { | |
4040 THROW_0(vmSymbols::java_lang_NoSuchFieldException()); | |
4041 } | |
4042 return JNIHandles::make_local(env, result); | |
4043 JVM_END | |
4044 | |
4045 | |
4046 JVM_ENTRY(jobject, JVM_GetClassMethod(JNIEnv *env, jclass cls, jstring name, jobjectArray types, jint which)) | |
4047 JVMWrapper("JVM_GetClassMethod"); | |
4048 JvmtiVMObjectAllocEventCollector oam; | |
4049 if (name == NULL) { | |
4050 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
4051 } | |
4052 Handle str (THREAD, JNIHandles::resolve_non_null(name)); | |
4053 | |
4054 const char* cstr = java_lang_String::as_utf8_string(str()); | |
4055 symbolHandle method_name = | |
4056 symbolHandle(THREAD, SymbolTable::probe(cstr, (int)strlen(cstr))); | |
4057 if (method_name.is_null()) { | |
4058 THROW_0(vmSymbols::java_lang_NoSuchMethodException()); | |
4059 } | |
4060 | |
4061 oop mirror = JNIHandles::resolve_non_null(cls); | |
4062 objArrayHandle tarray (THREAD, objArrayOop(JNIHandles::resolve(types))); | |
4063 oop result = Reflection::reflect_method(mirror, method_name, tarray, | |
4064 which, CHECK_NULL); | |
4065 if (result == NULL) { | |
4066 THROW_0(vmSymbols::java_lang_NoSuchMethodException()); | |
4067 } | |
4068 return JNIHandles::make_local(env, result); | |
4069 JVM_END | |
4070 | |
4071 | |
4072 JVM_ENTRY(jobject, JVM_GetClassConstructor(JNIEnv *env, jclass cls, jobjectArray types, jint which)) | |
4073 JVMWrapper("JVM_GetClassConstructor"); | |
4074 JvmtiVMObjectAllocEventCollector oam; | |
4075 oop mirror = JNIHandles::resolve_non_null(cls); | |
4076 objArrayHandle tarray (THREAD, objArrayOop(JNIHandles::resolve(types))); | |
4077 oop result = Reflection::reflect_constructor(mirror, tarray, which, CHECK_NULL); | |
4078 if (result == NULL) { | |
4079 THROW_0(vmSymbols::java_lang_NoSuchMethodException()); | |
4080 } | |
4081 return (jobject) JNIHandles::make_local(env, result); | |
4082 JVM_END | |
4083 | |
4084 | |
4085 // Instantiation /////////////////////////////////////////////////////////////////////////////// | |
4086 | |
4087 JVM_ENTRY(jobject, JVM_NewInstance(JNIEnv *env, jclass cls)) | |
4088 JVMWrapper("JVM_NewInstance"); | |
4089 Handle mirror(THREAD, JNIHandles::resolve_non_null(cls)); | |
4090 | |
4091 methodOop resolved_constructor = java_lang_Class::resolved_constructor(mirror()); | |
4092 if (resolved_constructor == NULL) { | |
4093 klassOop k = java_lang_Class::as_klassOop(mirror()); | |
4094 // The java.lang.Class object caches a resolved constructor if all the checks | |
4095 // below were done successfully and a constructor was found. | |
4096 | |
4097 // Do class based checks | |
4098 if (java_lang_Class::is_primitive(mirror())) { | |
4099 const char* msg = ""; | |
4100 if (mirror == Universe::bool_mirror()) msg = "java/lang/Boolean"; | |
4101 else if (mirror == Universe::char_mirror()) msg = "java/lang/Character"; | |
4102 else if (mirror == Universe::float_mirror()) msg = "java/lang/Float"; | |
4103 else if (mirror == Universe::double_mirror()) msg = "java/lang/Double"; | |
4104 else if (mirror == Universe::byte_mirror()) msg = "java/lang/Byte"; | |
4105 else if (mirror == Universe::short_mirror()) msg = "java/lang/Short"; | |
4106 else if (mirror == Universe::int_mirror()) msg = "java/lang/Integer"; | |
4107 else if (mirror == Universe::long_mirror()) msg = "java/lang/Long"; | |
4108 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), msg); | |
4109 } | |
4110 | |
4111 // Check whether we are allowed to instantiate this class | |
4112 Klass::cast(k)->check_valid_for_instantiation(false, CHECK_NULL); // Array classes get caught here | |
4113 instanceKlassHandle klass(THREAD, k); | |
4114 // Make sure class is initialized (also so all methods are rewritten) | |
4115 klass->initialize(CHECK_NULL); | |
4116 | |
4117 // Lookup default constructor | |
4118 resolved_constructor = klass->find_method(vmSymbols::object_initializer_name(), vmSymbols::void_method_signature()); | |
4119 if (resolved_constructor == NULL) { | |
4120 ResourceMark rm(THREAD); | |
4121 THROW_MSG_0(vmSymbols::java_lang_InstantiationException(), klass->external_name()); | |
4122 } | |
4123 | |
4124 // Cache result in java.lang.Class object. Does not have to be MT safe. | |
4125 java_lang_Class::set_resolved_constructor(mirror(), resolved_constructor); | |
4126 } | |
4127 | |
4128 assert(resolved_constructor != NULL, "sanity check"); | |
4129 methodHandle constructor = methodHandle(THREAD, resolved_constructor); | |
4130 | |
4131 // We have an initialized instanceKlass with a default constructor | |
4132 instanceKlassHandle klass(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls))); | |
4133 assert(klass->is_initialized() || klass->is_being_initialized(), "sanity check"); | |
4134 | |
4135 // Do security check | |
4136 klassOop caller_klass = NULL; | |
4137 if (UsePrivilegedStack) { | |
4138 caller_klass = thread->security_get_caller_class(2); | |
4139 | |
4140 if (!Reflection::verify_class_access(caller_klass, klass(), false) || | |
4141 !Reflection::verify_field_access(caller_klass, | |
4142 klass(), | |
4143 klass(), | |
4144 constructor->access_flags(), | |
4145 false, | |
4146 true)) { | |
4147 ResourceMark rm(THREAD); | |
4148 THROW_MSG_0(vmSymbols::java_lang_IllegalAccessException(), klass->external_name()); | |
4149 } | |
4150 } | |
4151 | |
4152 // Allocate object and call constructor | |
4153 Handle receiver = klass->allocate_instance_handle(CHECK_NULL); | |
4154 JavaCalls::call_default_constructor(thread, constructor, receiver, CHECK_NULL); | |
4155 | |
4156 jobject res = JNIHandles::make_local(env, receiver()); | |
4157 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4158 JvmtiExport::post_vm_object_alloc(JavaThread::current(), receiver()); | |
4159 } | |
4160 return res; | |
4161 JVM_END | |
4162 | |
4163 | |
4164 // Field //////////////////////////////////////////////////////////////////////////////////////////// | |
4165 | |
4166 JVM_ENTRY(jobject, JVM_GetField(JNIEnv *env, jobject field, jobject obj)) | |
4167 JVMWrapper("JVM_GetField"); | |
4168 JvmtiVMObjectAllocEventCollector oam; | |
4169 Handle field_mirror(thread, JNIHandles::resolve(field)); | |
4170 Handle receiver (thread, JNIHandles::resolve(obj)); | |
4171 fieldDescriptor fd; | |
4172 Reflection::resolve_field(field_mirror, receiver, &fd, false, CHECK_NULL); | |
4173 jvalue value; | |
4174 BasicType type = Reflection::field_get(&value, &fd, receiver); | |
4175 oop box = Reflection::box(&value, type, CHECK_NULL); | |
4176 return JNIHandles::make_local(env, box); | |
4177 JVM_END | |
4178 | |
4179 | |
4180 JVM_ENTRY(jvalue, JVM_GetPrimitiveField(JNIEnv *env, jobject field, jobject obj, unsigned char wCode)) | |
4181 JVMWrapper("JVM_GetPrimitiveField"); | |
4182 Handle field_mirror(thread, JNIHandles::resolve(field)); | |
4183 Handle receiver (thread, JNIHandles::resolve(obj)); | |
4184 fieldDescriptor fd; | |
4185 jvalue value; | |
4186 value.j = 0; | |
4187 Reflection::resolve_field(field_mirror, receiver, &fd, false, CHECK_(value)); | |
4188 BasicType type = Reflection::field_get(&value, &fd, receiver); | |
4189 BasicType wide_type = (BasicType) wCode; | |
4190 if (type != wide_type) { | |
4191 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
4192 } | |
4193 return value; | |
4194 JVM_END // should really be JVM_END, but that doesn't work for union types! | |
4195 | |
4196 | |
4197 JVM_ENTRY(void, JVM_SetField(JNIEnv *env, jobject field, jobject obj, jobject val)) | |
4198 JVMWrapper("JVM_SetField"); | |
4199 Handle field_mirror(thread, JNIHandles::resolve(field)); | |
4200 Handle receiver (thread, JNIHandles::resolve(obj)); | |
4201 oop box = JNIHandles::resolve(val); | |
4202 fieldDescriptor fd; | |
4203 Reflection::resolve_field(field_mirror, receiver, &fd, true, CHECK); | |
4204 BasicType field_type = fd.field_type(); | |
4205 jvalue value; | |
4206 BasicType value_type; | |
4207 if (field_type == T_OBJECT || field_type == T_ARRAY) { | |
4208 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
4209 value_type = Reflection::unbox_for_regular_object(box, &value); | |
4210 Reflection::field_set(&value, &fd, receiver, field_type, CHECK); | |
4211 } else { | |
4212 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
4213 Reflection::field_set(&value, &fd, receiver, value_type, CHECK); | |
4214 } | |
4215 JVM_END | |
4216 | |
4217 | |
4218 JVM_ENTRY(void, JVM_SetPrimitiveField(JNIEnv *env, jobject field, jobject obj, jvalue v, unsigned char vCode)) | |
4219 JVMWrapper("JVM_SetPrimitiveField"); | |
4220 Handle field_mirror(thread, JNIHandles::resolve(field)); | |
4221 Handle receiver (thread, JNIHandles::resolve(obj)); | |
4222 fieldDescriptor fd; | |
4223 Reflection::resolve_field(field_mirror, receiver, &fd, true, CHECK); | |
4224 BasicType value_type = (BasicType) vCode; | |
4225 Reflection::field_set(&v, &fd, receiver, value_type, CHECK); | |
4226 JVM_END | |
4227 | |
4228 | |
4229 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
4230 | |
4231 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
4232 JVMWrapper("JVM_InvokeMethod"); | |
4233 Handle method_handle; | |
4234 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
4235 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
4236 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
4237 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4238 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
4239 jobject res = JNIHandles::make_local(env, result); | |
4240 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4241 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
4242 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
4243 if (java_lang_Class::is_primitive(ret_type)) { | |
4244 // Only for primitive type vm allocates memory for java object. | |
4245 // See box() method. | |
4246 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4247 } | |
4248 } | |
4249 return res; | |
4250 } else { | |
4251 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
4252 } | |
4253 JVM_END | |
4254 | |
4255 | |
4256 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
4257 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
4258 oop constructor_mirror = JNIHandles::resolve(c); | |
4259 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4260 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
4261 jobject res = JNIHandles::make_local(env, result); | |
4262 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4263 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4264 } | |
4265 return res; | |
4266 JVM_END | |
4267 | |
4268 #endif /* SUPPORT_OLD_REFLECTION */ | |
4269 | |
4270 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
4271 | |
4272 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
4273 JVMWrapper("JVM_SupportsCX8"); | |
4274 return VM_Version::supports_cx8(); | |
4275 JVM_END | |
4276 | |
4277 | |
4278 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
4279 JVMWrapper("JVM_CX8Field"); | |
4280 jlong res; | |
4281 oop o = JNIHandles::resolve(obj); | |
4282 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
4283 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
4284 | |
4285 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
4286 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
4287 | |
4288 return res == oldVal; | |
4289 JVM_END | |
4290 | |
116
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4291 // DTrace /////////////////////////////////////////////////////////////////// |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4292 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4293 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4294 JVMWrapper("JVM_DTraceGetVersion"); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4295 return (jint)JVM_TRACING_DTRACE_VERSION; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4296 JVM_END |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4297 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4298 JVM_ENTRY(jlong,JVM_DTraceActivate( |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4299 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4300 JVM_DTraceProvider* providers)) |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4301 JVMWrapper("JVM_DTraceActivate"); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4302 return DTraceJSDT::activate( |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4303 version, module_name, providers_count, providers, CHECK_0); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4304 JVM_END |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4305 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4306 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4307 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4308 return DTraceJSDT::is_probe_enabled(method); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4309 JVM_END |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4310 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4311 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4312 JVMWrapper("JVM_DTraceDispose"); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4313 DTraceJSDT::dispose(handle); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4314 JVM_END |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4315 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4316 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4317 JVMWrapper("JVM_DTraceIsSupported"); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4318 return DTraceJSDT::is_supported(); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4319 JVM_END |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4320 |
0 | 4321 // Returns an array of all live Thread objects (VM internal JavaThreads, |
4322 // jvmti agent threads, and JNI attaching threads are skipped) | |
4323 // See CR 6404306 regarding JNI attaching threads | |
4324 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
4325 ResourceMark rm(THREAD); | |
4326 ThreadsListEnumerator tle(THREAD, false, false); | |
4327 JvmtiVMObjectAllocEventCollector oam; | |
4328 | |
4329 int num_threads = tle.num_threads(); | |
4330 objArrayOop r = oopFactory::new_objArray(SystemDictionary::thread_klass(), num_threads, CHECK_NULL); | |
4331 objArrayHandle threads_ah(THREAD, r); | |
4332 | |
4333 for (int i = 0; i < num_threads; i++) { | |
4334 Handle h = tle.get_threadObj(i); | |
4335 threads_ah->obj_at_put(i, h()); | |
4336 } | |
4337 | |
4338 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
4339 JVM_END | |
4340 | |
4341 | |
4342 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
4343 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
4344 // the corresponding entry in the given threads array | |
4345 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
4346 JVMWrapper("JVM_DumpThreads"); | |
4347 JvmtiVMObjectAllocEventCollector oam; | |
4348 | |
4349 // Check if threads is null | |
4350 if (threads == NULL) { | |
4351 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4352 } | |
4353 | |
4354 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
4355 objArrayHandle ah(THREAD, a); | |
4356 int num_threads = ah->length(); | |
4357 // check if threads is non-empty array | |
4358 if (num_threads == 0) { | |
4359 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
4360 } | |
4361 | |
4362 // check if threads is not an array of objects of Thread class | |
4363 klassOop k = objArrayKlass::cast(ah->klass())->element_klass(); | |
4364 if (k != SystemDictionary::thread_klass()) { | |
4365 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
4366 } | |
4367 | |
4368 ResourceMark rm(THREAD); | |
4369 | |
4370 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
4371 for (int i = 0; i < num_threads; i++) { | |
4372 oop thread_obj = ah->obj_at(i); | |
4373 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
4374 thread_handle_array->append(h); | |
4375 } | |
4376 | |
4377 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
4378 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
4379 | |
4380 JVM_END | |
4381 | |
4382 // JVM monitoring and management support | |
4383 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
4384 return Management::get_jmm_interface(version); | |
4385 JVM_END | |
4386 | |
4387 // com.sun.tools.attach.VirtualMachine agent properties support | |
4388 // | |
4389 // Initialize the agent properties with the properties maintained in the VM | |
4390 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
4391 JVMWrapper("JVM_InitAgentProperties"); | |
4392 ResourceMark rm; | |
4393 | |
4394 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
4395 | |
4396 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
4397 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
4398 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
4399 return properties; | |
4400 JVM_END | |
4401 | |
4402 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
4403 { | |
4404 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
4405 JvmtiVMObjectAllocEventCollector oam; | |
4406 | |
4407 if (ofClass == NULL) { | |
4408 return NULL; | |
4409 } | |
4410 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
4411 // Special handling for primitive objects | |
4412 if (java_lang_Class::is_primitive(mirror())) { | |
4413 return NULL; | |
4414 } | |
4415 klassOop k = java_lang_Class::as_klassOop(mirror()); | |
4416 if (!Klass::cast(k)->oop_is_instance()) { | |
4417 return NULL; | |
4418 } | |
4419 instanceKlassHandle ik_h(THREAD, k); | |
4420 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
4421 if (encl_method_class_idx == 0) { | |
4422 return NULL; | |
4423 } | |
4424 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::object_klass(), 3, CHECK_NULL); | |
4425 objArrayHandle dest(THREAD, dest_o); | |
4426 klassOop enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); | |
4427 dest->obj_at_put(0, Klass::cast(enc_k)->java_mirror()); | |
4428 int encl_method_method_idx = ik_h->enclosing_method_method_index(); | |
4429 if (encl_method_method_idx != 0) { | |
4430 symbolOop sym_o = ik_h->constants()->symbol_at( | |
4431 extract_low_short_from_int( | |
4432 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4433 symbolHandle sym(THREAD, sym_o); | |
4434 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4435 dest->obj_at_put(1, str()); | |
4436 sym_o = ik_h->constants()->symbol_at( | |
4437 extract_high_short_from_int( | |
4438 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4439 sym = symbolHandle(THREAD, sym_o); | |
4440 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4441 dest->obj_at_put(2, str()); | |
4442 } | |
4443 return (jobjectArray) JNIHandles::make_local(dest()); | |
4444 } | |
4445 JVM_END | |
4446 | |
4447 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
4448 jint javaThreadState)) | |
4449 { | |
4450 // If new thread states are added in future JDK and VM versions, | |
4451 // this should check if the JDK version is compatible with thread | |
4452 // states supported by the VM. Return NULL if not compatible. | |
4453 // | |
4454 // This function must map the VM java_lang_Thread::ThreadStatus | |
4455 // to the Java thread state that the JDK supports. | |
4456 // | |
4457 | |
4458 typeArrayHandle values_h; | |
4459 switch (javaThreadState) { | |
4460 case JAVA_THREAD_STATE_NEW : { | |
4461 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4462 values_h = typeArrayHandle(THREAD, r); | |
4463 values_h->int_at_put(0, java_lang_Thread::NEW); | |
4464 break; | |
4465 } | |
4466 case JAVA_THREAD_STATE_RUNNABLE : { | |
4467 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4468 values_h = typeArrayHandle(THREAD, r); | |
4469 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
4470 break; | |
4471 } | |
4472 case JAVA_THREAD_STATE_BLOCKED : { | |
4473 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4474 values_h = typeArrayHandle(THREAD, r); | |
4475 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
4476 break; | |
4477 } | |
4478 case JAVA_THREAD_STATE_WAITING : { | |
4479 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
4480 values_h = typeArrayHandle(THREAD, r); | |
4481 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
4482 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
4483 break; | |
4484 } | |
4485 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4486 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
4487 values_h = typeArrayHandle(THREAD, r); | |
4488 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
4489 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
4490 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
4491 break; | |
4492 } | |
4493 case JAVA_THREAD_STATE_TERMINATED : { | |
4494 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4495 values_h = typeArrayHandle(THREAD, r); | |
4496 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
4497 break; | |
4498 } | |
4499 default: | |
4500 // Unknown state - probably incompatible JDK version | |
4501 return NULL; | |
4502 } | |
4503 | |
4504 return (jintArray) JNIHandles::make_local(env, values_h()); | |
4505 } | |
4506 JVM_END | |
4507 | |
4508 | |
4509 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
4510 jint javaThreadState, | |
4511 jintArray values)) | |
4512 { | |
4513 // If new thread states are added in future JDK and VM versions, | |
4514 // this should check if the JDK version is compatible with thread | |
4515 // states supported by the VM. Return NULL if not compatible. | |
4516 // | |
4517 // This function must map the VM java_lang_Thread::ThreadStatus | |
4518 // to the Java thread state that the JDK supports. | |
4519 // | |
4520 | |
4521 ResourceMark rm; | |
4522 | |
4523 // Check if threads is null | |
4524 if (values == NULL) { | |
4525 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4526 } | |
4527 | |
4528 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
4529 typeArrayHandle values_h(THREAD, v); | |
4530 | |
4531 objArrayHandle names_h; | |
4532 switch (javaThreadState) { | |
4533 case JAVA_THREAD_STATE_NEW : { | |
4534 assert(values_h->length() == 1 && | |
4535 values_h->int_at(0) == java_lang_Thread::NEW, | |
4536 "Invalid threadStatus value"); | |
4537 | |
4538 objArrayOop r = oopFactory::new_objArray(SystemDictionary::string_klass(), | |
4539 1, /* only 1 substate */ | |
4540 CHECK_NULL); | |
4541 names_h = objArrayHandle(THREAD, r); | |
4542 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
4543 names_h->obj_at_put(0, name()); | |
4544 break; | |
4545 } | |
4546 case JAVA_THREAD_STATE_RUNNABLE : { | |
4547 assert(values_h->length() == 1 && | |
4548 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
4549 "Invalid threadStatus value"); | |
4550 | |
4551 objArrayOop r = oopFactory::new_objArray(SystemDictionary::string_klass(), | |
4552 1, /* only 1 substate */ | |
4553 CHECK_NULL); | |
4554 names_h = objArrayHandle(THREAD, r); | |
4555 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
4556 names_h->obj_at_put(0, name()); | |
4557 break; | |
4558 } | |
4559 case JAVA_THREAD_STATE_BLOCKED : { | |
4560 assert(values_h->length() == 1 && | |
4561 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
4562 "Invalid threadStatus value"); | |
4563 | |
4564 objArrayOop r = oopFactory::new_objArray(SystemDictionary::string_klass(), | |
4565 1, /* only 1 substate */ | |
4566 CHECK_NULL); | |
4567 names_h = objArrayHandle(THREAD, r); | |
4568 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
4569 names_h->obj_at_put(0, name()); | |
4570 break; | |
4571 } | |
4572 case JAVA_THREAD_STATE_WAITING : { | |
4573 assert(values_h->length() == 2 && | |
4574 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
4575 values_h->int_at(1) == java_lang_Thread::PARKED, | |
4576 "Invalid threadStatus value"); | |
4577 objArrayOop r = oopFactory::new_objArray(SystemDictionary::string_klass(), | |
4578 2, /* number of substates */ | |
4579 CHECK_NULL); | |
4580 names_h = objArrayHandle(THREAD, r); | |
4581 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
4582 CHECK_NULL); | |
4583 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
4584 CHECK_NULL); | |
4585 names_h->obj_at_put(0, name0()); | |
4586 names_h->obj_at_put(1, name1()); | |
4587 break; | |
4588 } | |
4589 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4590 assert(values_h->length() == 3 && | |
4591 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
4592 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
4593 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
4594 "Invalid threadStatus value"); | |
4595 objArrayOop r = oopFactory::new_objArray(SystemDictionary::string_klass(), | |
4596 3, /* number of substates */ | |
4597 CHECK_NULL); | |
4598 names_h = objArrayHandle(THREAD, r); | |
4599 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
4600 CHECK_NULL); | |
4601 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
4602 CHECK_NULL); | |
4603 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
4604 CHECK_NULL); | |
4605 names_h->obj_at_put(0, name0()); | |
4606 names_h->obj_at_put(1, name1()); | |
4607 names_h->obj_at_put(2, name2()); | |
4608 break; | |
4609 } | |
4610 case JAVA_THREAD_STATE_TERMINATED : { | |
4611 assert(values_h->length() == 1 && | |
4612 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
4613 "Invalid threadStatus value"); | |
4614 objArrayOop r = oopFactory::new_objArray(SystemDictionary::string_klass(), | |
4615 1, /* only 1 substate */ | |
4616 CHECK_NULL); | |
4617 names_h = objArrayHandle(THREAD, r); | |
4618 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
4619 names_h->obj_at_put(0, name()); | |
4620 break; | |
4621 } | |
4622 default: | |
4623 // Unknown state - probably incompatible JDK version | |
4624 return NULL; | |
4625 } | |
4626 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
4627 } | |
4628 JVM_END | |
4629 | |
4630 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
4631 { | |
4632 memset(info, 0, sizeof(info_size)); | |
4633 | |
4634 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
4635 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
4636 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
4637 | |
4638 // when we add a new capability in the jvm_version_info struct, we should also | |
4639 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
4640 // counter defined in runtimeService.cpp. | |
4641 info->is_attachable = AttachListener::is_attach_supported(); | |
4642 #ifdef KERNEL | |
4643 info->is_kernel_jvm = 1; // true; | |
4644 #else // KERNEL | |
4645 info->is_kernel_jvm = 0; // false; | |
4646 #endif // KERNEL | |
4647 } | |
4648 JVM_END | |
116
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4649 |