Mercurial > hg > truffle
annotate src/share/vm/prims/jvm.cpp @ 1615:ff38d05ea86f
6956958: assert(is_clean() || is_call_to_compiled() || is_call_to_interpreted() || is_optimized() || is_megam
Reviewed-by: kvn
author | never |
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date | Fri, 18 Jun 2010 16:51:54 -0700 |
parents | c18cbe5936b8 |
children | f95d63e2154a |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2009, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 #include "incls/_precompiled.incl" | |
26 #include "incls/_jvm.cpp.incl" | |
27 #include <errno.h> | |
28 | |
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29 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__begin, long long); |
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30 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__end, int); |
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31 HS_DTRACE_PROBE_DECL0(hotspot, thread__yield); |
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32 |
0 | 33 /* |
34 NOTE about use of any ctor or function call that can trigger a safepoint/GC: | |
35 such ctors and calls MUST NOT come between an oop declaration/init and its | |
36 usage because if objects are move this may cause various memory stomps, bus | |
37 errors and segfaults. Here is a cookbook for causing so called "naked oop | |
38 failures": | |
39 | |
40 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> { | |
41 JVMWrapper("JVM_GetClassDeclaredFields"); | |
42 | |
43 // Object address to be held directly in mirror & not visible to GC | |
44 oop mirror = JNIHandles::resolve_non_null(ofClass); | |
45 | |
46 // If this ctor can hit a safepoint, moving objects around, then | |
47 ComplexConstructor foo; | |
48 | |
49 // Boom! mirror may point to JUNK instead of the intended object | |
50 (some dereference of mirror) | |
51 | |
52 // Here's another call that may block for GC, making mirror stale | |
53 MutexLocker ml(some_lock); | |
54 | |
55 // And here's an initializer that can result in a stale oop | |
56 // all in one step. | |
57 oop o = call_that_can_throw_exception(TRAPS); | |
58 | |
59 | |
60 The solution is to keep the oop declaration BELOW the ctor or function | |
61 call that might cause a GC, do another resolve to reassign the oop, or | |
62 consider use of a Handle instead of an oop so there is immunity from object | |
63 motion. But note that the "QUICK" entries below do not have a handlemark | |
64 and thus can only support use of handles passed in. | |
65 */ | |
66 | |
67 static void trace_class_resolution_impl(klassOop to_class, TRAPS) { | |
68 ResourceMark rm; | |
69 int line_number = -1; | |
70 const char * source_file = NULL; | |
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71 const char * trace = "explicit"; |
0 | 72 klassOop caller = NULL; |
73 JavaThread* jthread = JavaThread::current(); | |
74 if (jthread->has_last_Java_frame()) { | |
75 vframeStream vfst(jthread); | |
76 | |
77 // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames | |
78 symbolHandle access_controller = oopFactory::new_symbol_handle("java/security/AccessController", CHECK); | |
79 klassOop access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); | |
80 symbolHandle privileged_action = oopFactory::new_symbol_handle("java/security/PrivilegedAction", CHECK); | |
81 klassOop privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); | |
82 | |
83 methodOop last_caller = NULL; | |
84 | |
85 while (!vfst.at_end()) { | |
86 methodOop m = vfst.method(); | |
1142 | 87 if (!vfst.method()->method_holder()->klass_part()->is_subclass_of(SystemDictionary::ClassLoader_klass())&& |
0 | 88 !vfst.method()->method_holder()->klass_part()->is_subclass_of(access_controller_klass) && |
89 !vfst.method()->method_holder()->klass_part()->is_subclass_of(privileged_action_klass)) { | |
90 break; | |
91 } | |
92 last_caller = m; | |
93 vfst.next(); | |
94 } | |
95 // if this is called from Class.forName0 and that is called from Class.forName, | |
96 // then print the caller of Class.forName. If this is Class.loadClass, then print | |
97 // that caller, otherwise keep quiet since this should be picked up elsewhere. | |
98 bool found_it = false; | |
99 if (!vfst.at_end() && | |
100 instanceKlass::cast(vfst.method()->method_holder())->name() == vmSymbols::java_lang_Class() && | |
101 vfst.method()->name() == vmSymbols::forName0_name()) { | |
102 vfst.next(); | |
103 if (!vfst.at_end() && | |
104 instanceKlass::cast(vfst.method()->method_holder())->name() == vmSymbols::java_lang_Class() && | |
105 vfst.method()->name() == vmSymbols::forName_name()) { | |
106 vfst.next(); | |
107 found_it = true; | |
108 } | |
109 } else if (last_caller != NULL && | |
110 instanceKlass::cast(last_caller->method_holder())->name() == | |
111 vmSymbols::java_lang_ClassLoader() && | |
112 (last_caller->name() == vmSymbols::loadClassInternal_name() || | |
113 last_caller->name() == vmSymbols::loadClass_name())) { | |
114 found_it = true; | |
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115 } else if (!vfst.at_end()) { |
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116 if (vfst.method()->is_native()) { |
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117 // JNI call |
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118 found_it = true; |
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119 } |
0 | 120 } |
121 if (found_it && !vfst.at_end()) { | |
122 // found the caller | |
123 caller = vfst.method()->method_holder(); | |
124 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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125 if (line_number == -1) { |
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126 // show method name if it's a native method |
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127 trace = vfst.method()->name_and_sig_as_C_string(); |
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128 } |
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129 symbolOop s = instanceKlass::cast(caller)->source_file_name(); |
0 | 130 if (s != NULL) { |
131 source_file = s->as_C_string(); | |
132 } | |
133 } | |
134 } | |
135 if (caller != NULL) { | |
136 if (to_class != caller) { | |
137 const char * from = Klass::cast(caller)->external_name(); | |
138 const char * to = Klass::cast(to_class)->external_name(); | |
139 // print in a single call to reduce interleaving between threads | |
140 if (source_file != NULL) { | |
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141 tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace); |
0 | 142 } else { |
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143 tty->print("RESOLVE %s %s (%s)\n", from, to, trace); |
0 | 144 } |
145 } | |
146 } | |
147 } | |
148 | |
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149 void trace_class_resolution(klassOop to_class) { |
0 | 150 EXCEPTION_MARK; |
151 trace_class_resolution_impl(to_class, THREAD); | |
152 if (HAS_PENDING_EXCEPTION) { | |
153 CLEAR_PENDING_EXCEPTION; | |
154 } | |
155 } | |
156 | |
157 // Wrapper to trace JVM functions | |
158 | |
159 #ifdef ASSERT | |
160 class JVMTraceWrapper : public StackObj { | |
161 public: | |
162 JVMTraceWrapper(const char* format, ...) { | |
163 if (TraceJVMCalls) { | |
164 va_list ap; | |
165 va_start(ap, format); | |
166 tty->print("JVM "); | |
167 tty->vprint_cr(format, ap); | |
168 va_end(ap); | |
169 } | |
170 } | |
171 }; | |
172 | |
173 Histogram* JVMHistogram; | |
174 volatile jint JVMHistogram_lock = 0; | |
175 | |
176 class JVMHistogramElement : public HistogramElement { | |
177 public: | |
178 JVMHistogramElement(const char* name); | |
179 }; | |
180 | |
181 JVMHistogramElement::JVMHistogramElement(const char* elementName) { | |
182 _name = elementName; | |
183 uintx count = 0; | |
184 | |
185 while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) { | |
186 while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) { | |
187 count +=1; | |
188 if ( (WarnOnStalledSpinLock > 0) | |
189 && (count % WarnOnStalledSpinLock == 0)) { | |
190 warning("JVMHistogram_lock seems to be stalled"); | |
191 } | |
192 } | |
193 } | |
194 | |
195 if(JVMHistogram == NULL) | |
196 JVMHistogram = new Histogram("JVM Call Counts",100); | |
197 | |
198 JVMHistogram->add_element(this); | |
199 Atomic::dec(&JVMHistogram_lock); | |
200 } | |
201 | |
202 #define JVMCountWrapper(arg) \ | |
203 static JVMHistogramElement* e = new JVMHistogramElement(arg); \ | |
204 if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen! | |
205 | |
206 #define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) | |
207 #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) | |
208 #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) | |
209 #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) | |
210 #else | |
211 #define JVMWrapper(arg1) | |
212 #define JVMWrapper2(arg1, arg2) | |
213 #define JVMWrapper3(arg1, arg2, arg3) | |
214 #define JVMWrapper4(arg1, arg2, arg3, arg4) | |
215 #endif | |
216 | |
217 | |
218 // Interface version ///////////////////////////////////////////////////////////////////// | |
219 | |
220 | |
221 JVM_LEAF(jint, JVM_GetInterfaceVersion()) | |
222 return JVM_INTERFACE_VERSION; | |
223 JVM_END | |
224 | |
225 | |
226 // java.lang.System ////////////////////////////////////////////////////////////////////// | |
227 | |
228 | |
229 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored)) | |
230 JVMWrapper("JVM_CurrentTimeMillis"); | |
231 return os::javaTimeMillis(); | |
232 JVM_END | |
233 | |
234 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored)) | |
235 JVMWrapper("JVM_NanoTime"); | |
236 return os::javaTimeNanos(); | |
237 JVM_END | |
238 | |
239 | |
240 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, | |
241 jobject dst, jint dst_pos, jint length)) | |
242 JVMWrapper("JVM_ArrayCopy"); | |
243 // Check if we have null pointers | |
244 if (src == NULL || dst == NULL) { | |
245 THROW(vmSymbols::java_lang_NullPointerException()); | |
246 } | |
247 arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); | |
248 arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); | |
249 assert(s->is_oop(), "JVM_ArrayCopy: src not an oop"); | |
250 assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); | |
251 // Do copy | |
252 Klass::cast(s->klass())->copy_array(s, src_pos, d, dst_pos, length, thread); | |
253 JVM_END | |
254 | |
255 | |
256 static void set_property(Handle props, const char* key, const char* value, TRAPS) { | |
257 JavaValue r(T_OBJECT); | |
258 // public synchronized Object put(Object key, Object value); | |
259 HandleMark hm(THREAD); | |
260 Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK); | |
261 Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK); | |
262 JavaCalls::call_virtual(&r, | |
263 props, | |
1142 | 264 KlassHandle(THREAD, SystemDictionary::Properties_klass()), |
0 | 265 vmSymbolHandles::put_name(), |
266 vmSymbolHandles::object_object_object_signature(), | |
267 key_str, | |
268 value_str, | |
269 THREAD); | |
270 } | |
271 | |
272 | |
273 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties)); | |
274 | |
275 | |
276 JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties)) | |
277 JVMWrapper("JVM_InitProperties"); | |
278 ResourceMark rm; | |
279 | |
280 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
281 | |
282 // System property list includes both user set via -D option and | |
283 // jvm system specific properties. | |
284 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
285 PUTPROP(props, p->key(), p->value()); | |
286 } | |
287 | |
288 // Convert the -XX:MaxDirectMemorySize= command line flag | |
289 // to the sun.nio.MaxDirectMemorySize property. | |
290 // Do this after setting user properties to prevent people | |
291 // from setting the value with a -D option, as requested. | |
292 { | |
293 char as_chars[256]; | |
294 jio_snprintf(as_chars, sizeof(as_chars), INTX_FORMAT, MaxDirectMemorySize); | |
295 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); | |
296 } | |
297 | |
298 // JVM monitoring and management support | |
299 // Add the sun.management.compiler property for the compiler's name | |
300 { | |
301 #undef CSIZE | |
302 #if defined(_LP64) || defined(_WIN64) | |
303 #define CSIZE "64-Bit " | |
304 #else | |
305 #define CSIZE | |
306 #endif // 64bit | |
307 | |
308 #ifdef TIERED | |
309 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; | |
310 #else | |
311 #if defined(COMPILER1) | |
312 const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; | |
313 #elif defined(COMPILER2) | |
314 const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; | |
315 #else | |
316 const char* compiler_name = ""; | |
317 #endif // compilers | |
318 #endif // TIERED | |
319 | |
320 if (*compiler_name != '\0' && | |
321 (Arguments::mode() != Arguments::_int)) { | |
322 PUTPROP(props, "sun.management.compiler", compiler_name); | |
323 } | |
324 } | |
325 | |
326 return properties; | |
327 JVM_END | |
328 | |
329 | |
330 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// | |
331 | |
332 extern volatile jint vm_created; | |
333 | |
334 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
335 if (vm_created != 0 && (code == 0)) { | |
336 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
337 Universe::run_finalizers_on_exit(); | |
338 } | |
339 before_exit(thread); | |
340 vm_exit(code); | |
341 JVM_END | |
342 | |
343 | |
344 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
345 before_exit(thread); | |
346 vm_exit(code); | |
347 JVM_END | |
348 | |
349 | |
350 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
351 register_on_exit_function(func); | |
352 JVM_END | |
353 | |
354 | |
355 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
356 JVMWrapper("JVM_GC"); | |
357 if (!DisableExplicitGC) { | |
358 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
359 } | |
360 JVM_END | |
361 | |
362 | |
363 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
364 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
365 return Universe::heap()->millis_since_last_gc(); | |
366 JVM_END | |
367 | |
368 | |
369 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
370 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
371 JVM_END | |
372 | |
373 | |
374 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
375 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
376 JVM_END | |
377 | |
378 static inline jlong convert_size_t_to_jlong(size_t val) { | |
379 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
380 NOT_LP64 (return (jlong)val;) | |
381 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
382 } | |
383 | |
384 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
385 JVMWrapper("JVM_TotalMemory"); | |
386 size_t n = Universe::heap()->capacity(); | |
387 return convert_size_t_to_jlong(n); | |
388 JVM_END | |
389 | |
390 | |
391 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
392 JVMWrapper("JVM_FreeMemory"); | |
393 CollectedHeap* ch = Universe::heap(); | |
342
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394 size_t n; |
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395 { |
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396 MutexLocker x(Heap_lock); |
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397 n = ch->capacity() - ch->used(); |
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398 } |
0 | 399 return convert_size_t_to_jlong(n); |
400 JVM_END | |
401 | |
402 | |
403 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
404 JVMWrapper("JVM_MaxMemory"); | |
405 size_t n = Universe::heap()->max_capacity(); | |
406 return convert_size_t_to_jlong(n); | |
407 JVM_END | |
408 | |
409 | |
410 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
411 JVMWrapper("JVM_ActiveProcessorCount"); | |
412 return os::active_processor_count(); | |
413 JVM_END | |
414 | |
415 | |
416 | |
417 // java.lang.Throwable ////////////////////////////////////////////////////// | |
418 | |
419 | |
420 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
421 JVMWrapper("JVM_FillInStackTrace"); | |
422 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
423 java_lang_Throwable::fill_in_stack_trace(exception); | |
424 JVM_END | |
425 | |
426 | |
427 JVM_ENTRY(void, JVM_PrintStackTrace(JNIEnv *env, jobject receiver, jobject printable)) | |
428 JVMWrapper("JVM_PrintStackTrace"); | |
429 // Note: This is no longer used in Merlin, but we still support it for compatibility. | |
430 oop exception = JNIHandles::resolve_non_null(receiver); | |
431 oop stream = JNIHandles::resolve_non_null(printable); | |
432 java_lang_Throwable::print_stack_trace(exception, stream); | |
433 JVM_END | |
434 | |
435 | |
436 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
437 JVMWrapper("JVM_GetStackTraceDepth"); | |
438 oop exception = JNIHandles::resolve(throwable); | |
439 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
440 JVM_END | |
441 | |
442 | |
443 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
444 JVMWrapper("JVM_GetStackTraceElement"); | |
445 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
446 oop exception = JNIHandles::resolve(throwable); | |
447 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
448 return JNIHandles::make_local(env, element); | |
449 JVM_END | |
450 | |
451 | |
452 // java.lang.Object /////////////////////////////////////////////// | |
453 | |
454 | |
455 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
456 JVMWrapper("JVM_IHashCode"); | |
457 // as implemented in the classic virtual machine; return 0 if object is NULL | |
458 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
459 JVM_END | |
460 | |
461 | |
462 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
463 JVMWrapper("JVM_MonitorWait"); | |
464 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
465 assert(obj->is_instance() || obj->is_array(), "JVM_MonitorWait must apply to an object"); | |
466 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
467 if (JvmtiExport::should_post_monitor_wait()) { | |
468 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
469 } | |
470 ObjectSynchronizer::wait(obj, ms, CHECK); | |
471 JVM_END | |
472 | |
473 | |
474 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
475 JVMWrapper("JVM_MonitorNotify"); | |
476 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
477 assert(obj->is_instance() || obj->is_array(), "JVM_MonitorNotify must apply to an object"); | |
478 ObjectSynchronizer::notify(obj, CHECK); | |
479 JVM_END | |
480 | |
481 | |
482 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
483 JVMWrapper("JVM_MonitorNotifyAll"); | |
484 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
485 assert(obj->is_instance() || obj->is_array(), "JVM_MonitorNotifyAll must apply to an object"); | |
486 ObjectSynchronizer::notifyall(obj, CHECK); | |
487 JVM_END | |
488 | |
489 | |
490 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
491 JVMWrapper("JVM_Clone"); | |
492 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
493 const KlassHandle klass (THREAD, obj->klass()); | |
494 JvmtiVMObjectAllocEventCollector oam; | |
495 | |
496 #ifdef ASSERT | |
497 // Just checking that the cloneable flag is set correct | |
498 if (obj->is_javaArray()) { | |
499 guarantee(klass->is_cloneable(), "all arrays are cloneable"); | |
500 } else { | |
501 guarantee(obj->is_instance(), "should be instanceOop"); | |
1142 | 502 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
0 | 503 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
504 } | |
505 #endif | |
506 | |
507 // Check if class of obj supports the Cloneable interface. | |
508 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
509 if (!klass->is_cloneable()) { | |
510 ResourceMark rm(THREAD); | |
511 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
512 } | |
513 | |
514 // Make shallow object copy | |
515 const int size = obj->size(); | |
516 oop new_obj = NULL; | |
517 if (obj->is_javaArray()) { | |
518 const int length = ((arrayOop)obj())->length(); | |
519 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
520 } else { | |
521 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
522 } | |
523 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
524 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
525 // be suspended in the middle of copying the pointer and end up with parts | |
526 // of two different pointers in the field. Subsequent dereferences will crash. | |
527 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
528 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
529 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
530 // The same is true of StubRoutines::object_copy and the various oop_copy | |
531 // variants, and of the code generated by the inline_native_clone intrinsic. | |
532 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
533 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
534 (size_t)align_object_size(size) / HeapWordsPerLong); | |
535 // Clear the header | |
536 new_obj->init_mark(); | |
537 | |
538 // Store check (mark entire object and let gc sort it out) | |
539 BarrierSet* bs = Universe::heap()->barrier_set(); | |
540 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
541 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
542 | |
543 // Caution: this involves a java upcall, so the clone should be | |
544 // "gc-robust" by this stage. | |
545 if (klass->has_finalizer()) { | |
546 assert(obj->is_instance(), "should be instanceOop"); | |
547 new_obj = instanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); | |
548 } | |
549 | |
550 return JNIHandles::make_local(env, oop(new_obj)); | |
551 JVM_END | |
552 | |
553 // java.lang.Compiler //////////////////////////////////////////////////// | |
554 | |
555 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
556 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
557 // functions are all silently ignored unless JVM warnings are printed. | |
558 | |
559 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
560 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
561 JVM_END | |
562 | |
563 | |
564 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
565 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
566 return JNI_FALSE; | |
567 JVM_END | |
568 | |
569 | |
570 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
571 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
572 return JNI_FALSE; | |
573 JVM_END | |
574 | |
575 | |
576 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
577 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
578 return JNI_FALSE; | |
579 JVM_END | |
580 | |
581 | |
582 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
583 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
584 return NULL; | |
585 JVM_END | |
586 | |
587 | |
588 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
589 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
590 JVM_END | |
591 | |
592 | |
593 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
594 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
595 JVM_END | |
596 | |
597 | |
598 | |
599 // Error message support ////////////////////////////////////////////////////// | |
600 | |
601 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
602 JVMWrapper("JVM_GetLastErrorString"); | |
603 return hpi::lasterror(buf, len); | |
604 JVM_END | |
605 | |
606 | |
607 // java.io.File /////////////////////////////////////////////////////////////// | |
608 | |
609 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
610 JVMWrapper2("JVM_NativePath (%s)", path); | |
611 return hpi::native_path(path); | |
612 JVM_END | |
613 | |
614 | |
615 // Misc. class handling /////////////////////////////////////////////////////////// | |
616 | |
617 | |
618 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
619 JVMWrapper("JVM_GetCallerClass"); | |
620 klassOop k = thread->security_get_caller_class(depth); | |
621 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); | |
622 JVM_END | |
623 | |
624 | |
625 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
626 JVMWrapper("JVM_FindPrimitiveClass"); | |
627 oop mirror = NULL; | |
628 BasicType t = name2type(utf); | |
629 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
630 mirror = Universe::java_mirror(t); | |
631 } | |
632 if (mirror == NULL) { | |
633 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
634 } else { | |
635 return (jclass) JNIHandles::make_local(env, mirror); | |
636 } | |
637 JVM_END | |
638 | |
639 | |
640 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
641 JVMWrapper("JVM_ResolveClass"); | |
642 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
643 JVM_END | |
644 | |
878
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645 |
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646 // Returns a class loaded by the bootstrap class loader; or null |
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647 // if not found. ClassNotFoundException is not thrown. |
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648 // |
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649 // Rationale behind JVM_FindClassFromBootLoader |
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650 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
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651 // b> because of (a) java.dll has a direct dependecy on the unexported |
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652 // private symbol "_JVM_FindClassFromClassLoader@20". |
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653 // c> the launcher cannot use the private symbol as it dynamically opens |
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654 // the entry point, so if something changes, the launcher will fail |
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655 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
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656 // stable exported interface. |
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657 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
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658 // signature to change from _JVM_FindClassFromClassLoader@20 to |
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659 // JVM_FindClassFromClassLoader and will not be backward compatible |
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660 // with older JDKs. |
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661 // Thus a public/stable exported entry point is the right solution, |
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662 // public here means public in linker semantics, and is exported only |
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663 // to the JDK, and is not intended to be a public API. |
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664 |
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665 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
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666 const char* name)) |
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667 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
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668 |
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669 // Java libraries should ensure that name is never null... |
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670 if (name == NULL || (int)strlen(name) > symbolOopDesc::max_length()) { |
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671 // It's impossible to create this class; the name cannot fit |
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672 // into the constant pool. |
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673 return NULL; |
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674 } |
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675 |
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676 symbolHandle h_name = oopFactory::new_symbol_handle(name, CHECK_NULL); |
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677 klassOop k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
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678 if (k == NULL) { |
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679 return NULL; |
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680 } |
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681 |
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682 if (TraceClassResolution) { |
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683 trace_class_resolution(k); |
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684 } |
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685 return (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); |
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686 JVM_END |
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687 |
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688 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
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689 jboolean init, jobject loader, |
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690 jboolean throwError)) |
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691 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
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692 throwError ? "error" : "exception"); |
388 | 693 // Java libraries should ensure that name is never null... |
694 if (name == NULL || (int)strlen(name) > symbolOopDesc::max_length()) { | |
695 // It's impossible to create this class; the name cannot fit | |
696 // into the constant pool. | |
697 if (throwError) { | |
698 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
699 } else { | |
700 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
701 } | |
702 } | |
703 symbolHandle h_name = oopFactory::new_symbol_handle(name, CHECK_NULL); | |
704 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
705 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
706 Handle(), throwError, THREAD); | |
707 | |
708 if (TraceClassResolution && result != NULL) { | |
709 trace_class_resolution(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(result))); | |
710 } | |
711 return result; | |
0 | 712 JVM_END |
713 | |
714 | |
715 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
716 jboolean init, jclass from)) | |
717 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
718 if (name == NULL || (int)strlen(name) > symbolOopDesc::max_length()) { | |
719 // It's impossible to create this class; the name cannot fit | |
720 // into the constant pool. | |
721 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
722 } | |
723 symbolHandle h_name = oopFactory::new_symbol_handle(name, CHECK_NULL); | |
724 oop from_class_oop = JNIHandles::resolve(from); | |
725 klassOop from_class = (from_class_oop == NULL) | |
726 ? (klassOop)NULL | |
727 : java_lang_Class::as_klassOop(from_class_oop); | |
728 oop class_loader = NULL; | |
729 oop protection_domain = NULL; | |
730 if (from_class != NULL) { | |
731 class_loader = Klass::cast(from_class)->class_loader(); | |
732 protection_domain = Klass::cast(from_class)->protection_domain(); | |
733 } | |
734 Handle h_loader(THREAD, class_loader); | |
735 Handle h_prot (THREAD, protection_domain); | |
736 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
737 h_prot, true, thread); | |
738 | |
739 if (TraceClassResolution && result != NULL) { | |
740 // this function is generally only used for class loading during verification. | |
741 ResourceMark rm; | |
742 oop from_mirror = JNIHandles::resolve_non_null(from); | |
743 klassOop from_class = java_lang_Class::as_klassOop(from_mirror); | |
744 const char * from_name = Klass::cast(from_class)->external_name(); | |
745 | |
746 oop mirror = JNIHandles::resolve_non_null(result); | |
747 klassOop to_class = java_lang_Class::as_klassOop(mirror); | |
748 const char * to = Klass::cast(to_class)->external_name(); | |
749 tty->print("RESOLVE %s %s (verification)\n", from_name, to); | |
750 } | |
751 | |
752 return result; | |
753 JVM_END | |
754 | |
755 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
756 if (loader.is_null()) { | |
757 return; | |
758 } | |
759 | |
760 // check whether the current caller thread holds the lock or not. | |
761 // If not, increment the corresponding counter | |
762 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
763 ObjectSynchronizer::owner_self) { | |
764 counter->inc(); | |
765 } | |
766 } | |
767 | |
768 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
973
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769 // and JVM_DefineClassWithSourceCond() |
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770 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
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771 jobject loader, const jbyte *buf, |
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772 jsize len, jobject pd, const char *source, |
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773 jboolean verify, TRAPS) { |
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774 if (source == NULL) source = "__JVM_DefineClass__"; |
0 | 775 |
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776 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
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777 JavaThread* jt = (JavaThread*) THREAD; |
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778 |
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779 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
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780 ClassLoader::perf_define_appclass_selftime(), |
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781 ClassLoader::perf_define_appclasses(), |
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782 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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783 jt->get_thread_stat()->perf_timers_addr(), |
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784 PerfClassTraceTime::DEFINE_CLASS); |
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785 |
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786 if (UsePerfData) { |
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787 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
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788 } |
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789 |
0 | 790 // Since exceptions can be thrown, class initialization can take place |
791 // if name is NULL no check for class name in .class stream has to be made. | |
792 symbolHandle class_name; | |
793 if (name != NULL) { | |
794 const int str_len = (int)strlen(name); | |
795 if (str_len > symbolOopDesc::max_length()) { | |
796 // It's impossible to create this class; the name cannot fit | |
797 // into the constant pool. | |
798 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
799 } | |
800 class_name = oopFactory::new_symbol_handle(name, str_len, CHECK_NULL); | |
801 } | |
802 | |
803 ResourceMark rm(THREAD); | |
804 ClassFileStream st((u1*) buf, len, (char *)source); | |
805 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
806 if (UsePerfData) { | |
807 is_lock_held_by_thread(class_loader, | |
808 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
809 THREAD); | |
810 } | |
811 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
812 klassOop k = SystemDictionary::resolve_from_stream(class_name, class_loader, | |
813 protection_domain, &st, | |
973
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814 verify != 0, |
0 | 815 CHECK_NULL); |
816 | |
817 if (TraceClassResolution && k != NULL) { | |
818 trace_class_resolution(k); | |
819 } | |
820 | |
821 return (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); | |
822 } | |
823 | |
824 | |
825 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
826 JVMWrapper2("JVM_DefineClass %s", name); | |
827 | |
973
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828 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
0 | 829 JVM_END |
830 | |
831 | |
832 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
833 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
834 | |
973
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835 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
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836 JVM_END |
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837 |
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838 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
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839 jobject loader, const jbyte *buf, |
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840 jsize len, jobject pd, |
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841 const char *source, jboolean verify)) |
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842 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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843 |
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844 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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845 JVM_END |
0 | 846 |
847 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
848 JVMWrapper("JVM_FindLoadedClass"); | |
849 ResourceMark rm(THREAD); | |
850 | |
851 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
852 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
853 | |
854 const char* str = java_lang_String::as_utf8_string(string()); | |
855 // Sanity check, don't expect null | |
856 if (str == NULL) return NULL; | |
857 | |
858 const int str_len = (int)strlen(str); | |
859 if (str_len > symbolOopDesc::max_length()) { | |
860 // It's impossible to create this class; the name cannot fit | |
861 // into the constant pool. | |
862 return NULL; | |
863 } | |
864 symbolHandle klass_name = oopFactory::new_symbol_handle(str, str_len,CHECK_NULL); | |
865 | |
866 // Security Note: | |
867 // The Java level wrapper will perform the necessary security check allowing | |
868 // us to pass the NULL as the initiating class loader. | |
869 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
870 if (UsePerfData) { | |
871 is_lock_held_by_thread(h_loader, | |
872 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
873 THREAD); | |
874 } | |
875 | |
876 klassOop k = SystemDictionary::find_instance_or_array_klass(klass_name, | |
877 h_loader, | |
878 Handle(), | |
879 CHECK_NULL); | |
880 | |
881 return (k == NULL) ? NULL : | |
882 (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); | |
883 JVM_END | |
884 | |
885 | |
886 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
887 | |
888 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
889 assert (cls != NULL, "illegal class"); | |
890 JVMWrapper("JVM_GetClassName"); | |
891 JvmtiVMObjectAllocEventCollector oam; | |
892 ResourceMark rm(THREAD); | |
893 const char* name; | |
894 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
895 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
896 } else { | |
897 // Consider caching interned string in Klass | |
898 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
899 assert(k->is_klass(), "just checking"); | |
900 name = Klass::cast(k)->external_name(); | |
901 } | |
902 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
903 return (jstring) JNIHandles::make_local(env, result); | |
904 JVM_END | |
905 | |
906 | |
907 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
908 JVMWrapper("JVM_GetClassInterfaces"); | |
909 JvmtiVMObjectAllocEventCollector oam; | |
910 oop mirror = JNIHandles::resolve_non_null(cls); | |
911 | |
912 // Special handling for primitive objects | |
913 if (java_lang_Class::is_primitive(mirror)) { | |
914 // Primitive objects does not have any interfaces | |
1142 | 915 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 916 return (jobjectArray) JNIHandles::make_local(env, r); |
917 } | |
918 | |
919 KlassHandle klass(thread, java_lang_Class::as_klassOop(mirror)); | |
920 // Figure size of result array | |
921 int size; | |
922 if (klass->oop_is_instance()) { | |
923 size = instanceKlass::cast(klass())->local_interfaces()->length(); | |
924 } else { | |
925 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
926 size = 2; | |
927 } | |
928 | |
929 // Allocate result array | |
1142 | 930 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
0 | 931 objArrayHandle result (THREAD, r); |
932 // Fill in result | |
933 if (klass->oop_is_instance()) { | |
934 // Regular instance klass, fill in all local interfaces | |
935 for (int index = 0; index < size; index++) { | |
936 klassOop k = klassOop(instanceKlass::cast(klass())->local_interfaces()->obj_at(index)); | |
937 result->obj_at_put(index, Klass::cast(k)->java_mirror()); | |
938 } | |
939 } else { | |
940 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
1142 | 941 result->obj_at_put(0, Klass::cast(SystemDictionary::Cloneable_klass())->java_mirror()); |
942 result->obj_at_put(1, Klass::cast(SystemDictionary::Serializable_klass())->java_mirror()); | |
0 | 943 } |
944 return (jobjectArray) JNIHandles::make_local(env, result()); | |
945 JVM_END | |
946 | |
947 | |
948 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
949 JVMWrapper("JVM_GetClassLoader"); | |
950 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
951 return NULL; | |
952 } | |
953 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
954 oop loader = Klass::cast(k)->class_loader(); | |
955 return JNIHandles::make_local(env, loader); | |
956 JVM_END | |
957 | |
958 | |
959 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
960 JVMWrapper("JVM_IsInterface"); | |
961 oop mirror = JNIHandles::resolve_non_null(cls); | |
962 if (java_lang_Class::is_primitive(mirror)) { | |
963 return JNI_FALSE; | |
964 } | |
965 klassOop k = java_lang_Class::as_klassOop(mirror); | |
966 jboolean result = Klass::cast(k)->is_interface(); | |
967 assert(!result || Klass::cast(k)->oop_is_instance(), | |
968 "all interfaces are instance types"); | |
969 // The compiler intrinsic for isInterface tests the | |
970 // Klass::_access_flags bits in the same way. | |
971 return result; | |
972 JVM_END | |
973 | |
974 | |
975 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
976 JVMWrapper("JVM_GetClassSigners"); | |
977 JvmtiVMObjectAllocEventCollector oam; | |
978 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
979 // There are no signers for primitive types | |
980 return NULL; | |
981 } | |
982 | |
983 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
984 objArrayOop signers = NULL; | |
985 if (Klass::cast(k)->oop_is_instance()) { | |
986 signers = instanceKlass::cast(k)->signers(); | |
987 } | |
988 | |
989 // If there are no signers set in the class, or if the class | |
990 // is an array, return NULL. | |
991 if (signers == NULL) return NULL; | |
992 | |
993 // copy of the signers array | |
994 klassOop element = objArrayKlass::cast(signers->klass())->element_klass(); | |
995 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); | |
996 for (int index = 0; index < signers->length(); index++) { | |
997 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
998 } | |
999 | |
1000 // return the copy | |
1001 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
1002 JVM_END | |
1003 | |
1004 | |
1005 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
1006 JVMWrapper("JVM_SetClassSigners"); | |
1007 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1008 // This call is ignored for primitive types and arrays. | |
1009 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
1010 // be called with an array. Only the bootstrap loader creates arrays. | |
1011 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
1012 if (Klass::cast(k)->oop_is_instance()) { | |
1013 instanceKlass::cast(k)->set_signers(objArrayOop(JNIHandles::resolve(signers))); | |
1014 } | |
1015 } | |
1016 JVM_END | |
1017 | |
1018 | |
1019 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
1020 JVMWrapper("JVM_GetProtectionDomain"); | |
1021 if (JNIHandles::resolve(cls) == NULL) { | |
1022 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
1023 } | |
1024 | |
1025 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1026 // Primitive types does not have a protection domain. | |
1027 return NULL; | |
1028 } | |
1029 | |
1030 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
1031 return (jobject) JNIHandles::make_local(env, Klass::cast(k)->protection_domain()); | |
1032 JVM_END | |
1033 | |
1034 | |
1035 // Obsolete since 1.2 (Class.setProtectionDomain removed), although | |
1036 // still defined in core libraries as of 1.5. | |
1037 JVM_ENTRY(void, JVM_SetProtectionDomain(JNIEnv *env, jclass cls, jobject protection_domain)) | |
1038 JVMWrapper("JVM_SetProtectionDomain"); | |
1039 if (JNIHandles::resolve(cls) == NULL) { | |
1040 THROW(vmSymbols::java_lang_NullPointerException()); | |
1041 } | |
1042 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1043 // Call is ignored for primitive types | |
1044 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
1045 | |
1046 // cls won't be an array, as this called only from ClassLoader.defineClass | |
1047 if (Klass::cast(k)->oop_is_instance()) { | |
1048 oop pd = JNIHandles::resolve(protection_domain); | |
1049 assert(pd == NULL || pd->is_oop(), "just checking"); | |
1050 instanceKlass::cast(k)->set_protection_domain(pd); | |
1051 } | |
1052 } | |
1053 JVM_END | |
1054 | |
1055 | |
1056 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
1057 JVMWrapper("JVM_DoPrivileged"); | |
1058 | |
1059 if (action == NULL) { | |
1060 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
1061 } | |
1062 | |
1063 // Stack allocated list of privileged stack elements | |
1064 PrivilegedElement pi; | |
1065 | |
1066 // Check that action object understands "Object run()" | |
1067 Handle object (THREAD, JNIHandles::resolve(action)); | |
1068 | |
1069 // get run() method | |
1070 methodOop m_oop = Klass::cast(object->klass())->uncached_lookup_method( | |
1071 vmSymbols::run_method_name(), | |
1072 vmSymbols::void_object_signature()); | |
1073 methodHandle m (THREAD, m_oop); | |
1074 if (m.is_null() || !m->is_method() || !methodOop(m())->is_public() || methodOop(m())->is_static()) { | |
1075 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); | |
1076 } | |
1077 | |
1078 // Compute the frame initiating the do privileged operation and setup the privileged stack | |
1079 vframeStream vfst(thread); | |
1080 vfst.security_get_caller_frame(1); | |
1081 | |
1082 if (!vfst.at_end()) { | |
1083 pi.initialize(&vfst, JNIHandles::resolve(context), thread->privileged_stack_top(), CHECK_NULL); | |
1084 thread->set_privileged_stack_top(&pi); | |
1085 } | |
1086 | |
1087 | |
1088 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
1089 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
1090 Handle pending_exception; | |
1091 JavaValue result(T_OBJECT); | |
1092 JavaCallArguments args(object); | |
1093 JavaCalls::call(&result, m, &args, THREAD); | |
1094 | |
1095 // done with action, remove ourselves from the list | |
1096 if (!vfst.at_end()) { | |
1097 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
1098 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
1099 } | |
1100 | |
1101 if (HAS_PENDING_EXCEPTION) { | |
1102 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
1103 CLEAR_PENDING_EXCEPTION; | |
1104 | |
1142 | 1105 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
1106 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
0 | 1107 // Throw a java.security.PrivilegedActionException(Exception e) exception |
1108 JavaCallArguments args(pending_exception); | |
1109 THROW_ARG_0(vmSymbolHandles::java_security_PrivilegedActionException(), | |
1110 vmSymbolHandles::exception_void_signature(), | |
1111 &args); | |
1112 } | |
1113 } | |
1114 | |
1115 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
1116 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
1117 JVM_END | |
1118 | |
1119 | |
1120 // Returns the inherited_access_control_context field of the running thread. | |
1121 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
1122 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
1123 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
1124 return JNIHandles::make_local(env, result); | |
1125 JVM_END | |
1126 | |
1127 class RegisterArrayForGC { | |
1128 private: | |
1129 JavaThread *_thread; | |
1130 public: | |
1131 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
1132 _thread = thread; | |
1133 _thread->register_array_for_gc(array); | |
1134 } | |
1135 | |
1136 ~RegisterArrayForGC() { | |
1137 _thread->register_array_for_gc(NULL); | |
1138 } | |
1139 }; | |
1140 | |
1141 | |
1142 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
1143 JVMWrapper("JVM_GetStackAccessControlContext"); | |
1144 if (!UsePrivilegedStack) return NULL; | |
1145 | |
1146 ResourceMark rm(THREAD); | |
1147 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
1148 JvmtiVMObjectAllocEventCollector oam; | |
1149 | |
1150 // count the protection domains on the execution stack. We collapse | |
1151 // duplicate consecutive protection domains into a single one, as | |
1152 // well as stopping when we hit a privileged frame. | |
1153 | |
1154 // Use vframeStream to iterate through Java frames | |
1155 vframeStream vfst(thread); | |
1156 | |
1157 oop previous_protection_domain = NULL; | |
1158 Handle privileged_context(thread, NULL); | |
1159 bool is_privileged = false; | |
1160 oop protection_domain = NULL; | |
1161 | |
1162 for(; !vfst.at_end(); vfst.next()) { | |
1163 // get method of frame | |
1164 methodOop method = vfst.method(); | |
1165 intptr_t* frame_id = vfst.frame_id(); | |
1166 | |
1167 // check the privileged frames to see if we have a match | |
1168 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
1169 // this frame is privileged | |
1170 is_privileged = true; | |
1171 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
1172 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
1173 } else { | |
1174 protection_domain = instanceKlass::cast(method->method_holder())->protection_domain(); | |
1175 } | |
1176 | |
1177 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
1178 local_array->push(protection_domain); | |
1179 previous_protection_domain = protection_domain; | |
1180 } | |
1181 | |
1182 if (is_privileged) break; | |
1183 } | |
1184 | |
1185 | |
1186 // either all the domains on the stack were system domains, or | |
1187 // we had a privileged system domain | |
1188 if (local_array->is_empty()) { | |
1189 if (is_privileged && privileged_context.is_null()) return NULL; | |
1190 | |
1191 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
1192 return JNIHandles::make_local(env, result); | |
1193 } | |
1194 | |
1195 // the resource area must be registered in case of a gc | |
1196 RegisterArrayForGC ragc(thread, local_array); | |
1142 | 1197 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
0 | 1198 local_array->length(), CHECK_NULL); |
1199 objArrayHandle h_context(thread, context); | |
1200 for (int index = 0; index < local_array->length(); index++) { | |
1201 h_context->obj_at_put(index, local_array->at(index)); | |
1202 } | |
1203 | |
1204 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
1205 | |
1206 return JNIHandles::make_local(env, result); | |
1207 JVM_END | |
1208 | |
1209 | |
1210 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
1211 JVMWrapper("JVM_IsArrayClass"); | |
1212 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
1213 return (k != NULL) && Klass::cast(k)->oop_is_javaArray() ? true : false; | |
1214 JVM_END | |
1215 | |
1216 | |
1217 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
1218 JVMWrapper("JVM_IsPrimitiveClass"); | |
1219 oop mirror = JNIHandles::resolve_non_null(cls); | |
1220 return (jboolean) java_lang_Class::is_primitive(mirror); | |
1221 JVM_END | |
1222 | |
1223 | |
1224 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
1225 JVMWrapper("JVM_GetComponentType"); | |
1226 oop mirror = JNIHandles::resolve_non_null(cls); | |
1227 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
1228 return (jclass) JNIHandles::make_local(env, result); | |
1229 JVM_END | |
1230 | |
1231 | |
1232 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
1233 JVMWrapper("JVM_GetClassModifiers"); | |
1234 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1235 // Primitive type | |
1236 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1237 } | |
1238 | |
1239 Klass* k = Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls))); | |
1240 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); | |
1241 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
1242 return k->modifier_flags(); | |
1243 JVM_END | |
1244 | |
1245 | |
1246 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
1247 | |
1248 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
1249 const int inner_class_info_index = 0; | |
1250 const int outer_class_info_index = 1; | |
1251 | |
1252 JvmtiVMObjectAllocEventCollector oam; | |
1253 // ofClass is a reference to a java_lang_Class object. The mirror object | |
1254 // of an instanceKlass | |
1255 | |
1256 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
1257 ! Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_instance()) { | |
1142 | 1258 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1259 return (jobjectArray)JNIHandles::make_local(env, result); |
1260 } | |
1261 | |
1262 instanceKlassHandle k(thread, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
1263 | |
1264 if (k->inner_classes()->length() == 0) { | |
1265 // Neither an inner nor outer class | |
1142 | 1266 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1267 return (jobjectArray)JNIHandles::make_local(env, result); |
1268 } | |
1269 | |
1270 // find inner class info | |
1271 typeArrayHandle icls(thread, k->inner_classes()); | |
1272 constantPoolHandle cp(thread, k->constants()); | |
1273 int length = icls->length(); | |
1274 | |
1275 // Allocate temp. result array | |
1142 | 1276 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
0 | 1277 objArrayHandle result (THREAD, r); |
1278 int members = 0; | |
1279 | |
1280 for(int i = 0; i < length; i += 4) { | |
1281 int ioff = icls->ushort_at(i + inner_class_info_index); | |
1282 int ooff = icls->ushort_at(i + outer_class_info_index); | |
1283 | |
1284 if (ioff != 0 && ooff != 0) { | |
1285 // Check to see if the name matches the class we're looking for | |
1286 // before attempting to find the class. | |
1287 if (cp->klass_name_at_matches(k, ooff)) { | |
1288 klassOop outer_klass = cp->klass_at(ooff, CHECK_NULL); | |
1289 if (outer_klass == k()) { | |
1290 klassOop ik = cp->klass_at(ioff, CHECK_NULL); | |
1291 instanceKlassHandle inner_klass (THREAD, ik); | |
1292 | |
1293 // Throws an exception if outer klass has not declared k as | |
1294 // an inner klass | |
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1295 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
0 | 1296 |
1297 result->obj_at_put(members, inner_klass->java_mirror()); | |
1298 members++; | |
1299 } | |
1300 } | |
1301 } | |
1302 } | |
1303 | |
1304 if (members != length) { | |
1305 // Return array of right length | |
1142 | 1306 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
0 | 1307 for(int i = 0; i < members; i++) { |
1308 res->obj_at_put(i, result->obj_at(i)); | |
1309 } | |
1310 return (jobjectArray)JNIHandles::make_local(env, res); | |
1311 } | |
1312 | |
1313 return (jobjectArray)JNIHandles::make_local(env, result()); | |
1314 JVM_END | |
1315 | |
1316 | |
1317 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
665
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1318 { |
0 | 1319 // ofClass is a reference to a java_lang_Class object. |
1320 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
1321 ! Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_instance()) { | |
1322 return NULL; | |
1323 } | |
1324 | |
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1325 bool inner_is_member = false; |
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1326 klassOop outer_klass |
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1327 = instanceKlass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)) |
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1328 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
665
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1329 if (outer_klass == NULL) return NULL; // already a top-level class |
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1330 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
665
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1331 return (jclass) JNIHandles::make_local(env, Klass::cast(outer_klass)->java_mirror()); |
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1332 } |
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1333 JVM_END |
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1334 |
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1335 // should be in instanceKlass.cpp, but is here for historical reasons |
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1336 klassOop instanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
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1337 bool* inner_is_member, |
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1338 TRAPS) { |
665
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1339 Thread* thread = THREAD; |
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1340 const int inner_class_info_index = inner_class_inner_class_info_offset; |
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1341 const int outer_class_info_index = inner_class_outer_class_info_offset; |
0 | 1342 |
1343 if (k->inner_classes()->length() == 0) { | |
1344 // No inner class info => no declaring class | |
1345 return NULL; | |
1346 } | |
1347 | |
1348 typeArrayHandle i_icls(thread, k->inner_classes()); | |
1349 constantPoolHandle i_cp(thread, k->constants()); | |
1350 int i_length = i_icls->length(); | |
1351 | |
1352 bool found = false; | |
1353 klassOop ok; | |
1354 instanceKlassHandle outer_klass; | |
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1355 *inner_is_member = false; |
0 | 1356 |
1357 // Find inner_klass attribute | |
665
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1358 for (int i = 0; i < i_length && !found; i += inner_class_next_offset) { |
0 | 1359 int ioff = i_icls->ushort_at(i + inner_class_info_index); |
1360 int ooff = i_icls->ushort_at(i + outer_class_info_index); | |
665
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1361 int noff = i_icls->ushort_at(i + inner_class_inner_name_offset); |
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1362 if (ioff != 0) { |
0 | 1363 // Check to see if the name matches the class we're looking for |
1364 // before attempting to find the class. | |
1365 if (i_cp->klass_name_at_matches(k, ioff)) { | |
1366 klassOop inner_klass = i_cp->klass_at(ioff, CHECK_NULL); | |
665
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1367 found = (k() == inner_klass); |
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1368 if (found && ooff != 0) { |
0 | 1369 ok = i_cp->klass_at(ooff, CHECK_NULL); |
1370 outer_klass = instanceKlassHandle(thread, ok); | |
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1371 *inner_is_member = true; |
0 | 1372 } |
1373 } | |
1374 } | |
1375 } | |
1376 | |
665
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1377 if (found && outer_klass.is_null()) { |
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1378 // It may be anonymous; try for that. |
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1379 int encl_method_class_idx = k->enclosing_method_class_index(); |
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1380 if (encl_method_class_idx != 0) { |
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1381 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
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1382 outer_klass = instanceKlassHandle(thread, ok); |
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1383 *inner_is_member = false; |
665
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1384 } |
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1385 } |
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1386 |
0 | 1387 // If no inner class attribute found for this class. |
665
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1388 if (outer_klass.is_null()) return NULL; |
0 | 1389 |
1390 // Throws an exception if outer klass has not declared k as an inner klass | |
665
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1391 // We need evidence that each klass knows about the other, or else |
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1392 // the system could allow a spoof of an inner class to gain access rights. |
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1393 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
665
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1394 return outer_klass(); |
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1395 } |
0 | 1396 |
1397 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
1398 assert (cls != NULL, "illegal class"); | |
1399 JVMWrapper("JVM_GetClassSignature"); | |
1400 JvmtiVMObjectAllocEventCollector oam; | |
1401 ResourceMark rm(THREAD); | |
1402 // Return null for arrays and primatives | |
1403 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1404 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
1405 if (Klass::cast(k)->oop_is_instance()) { | |
1406 symbolHandle sym = symbolHandle(THREAD, instanceKlass::cast(k)->generic_signature()); | |
1407 if (sym.is_null()) return NULL; | |
1408 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
1409 return (jstring) JNIHandles::make_local(env, str()); | |
1410 } | |
1411 } | |
1412 return NULL; | |
1413 JVM_END | |
1414 | |
1415 | |
1416 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
1417 assert (cls != NULL, "illegal class"); | |
1418 JVMWrapper("JVM_GetClassAnnotations"); | |
1419 ResourceMark rm(THREAD); | |
1420 // Return null for arrays and primitives | |
1421 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1422 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
1423 if (Klass::cast(k)->oop_is_instance()) { | |
1424 return (jbyteArray) JNIHandles::make_local(env, | |
1425 instanceKlass::cast(k)->class_annotations()); | |
1426 } | |
1427 } | |
1428 return NULL; | |
1429 JVM_END | |
1430 | |
1431 | |
1432 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) | |
1433 assert(field != NULL, "illegal field"); | |
1434 JVMWrapper("JVM_GetFieldAnnotations"); | |
1435 | |
1436 // some of this code was adapted from from jni_FromReflectedField | |
1437 | |
1438 // field is a handle to a java.lang.reflect.Field object | |
1439 oop reflected = JNIHandles::resolve_non_null(field); | |
1440 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
1441 klassOop k = java_lang_Class::as_klassOop(mirror); | |
1442 int slot = java_lang_reflect_Field::slot(reflected); | |
1443 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
1444 | |
1445 fieldDescriptor fd; | |
1446 KlassHandle kh(THREAD, k); | |
1447 intptr_t offset = instanceKlass::cast(kh())->offset_from_fields(slot); | |
1448 | |
1449 if (modifiers & JVM_ACC_STATIC) { | |
1450 // for static fields we only look in the current class | |
1451 if (!instanceKlass::cast(kh())->find_local_field_from_offset(offset, | |
1452 true, &fd)) { | |
1453 assert(false, "cannot find static field"); | |
1454 return NULL; // robustness | |
1455 } | |
1456 } else { | |
1457 // for instance fields we start with the current class and work | |
1458 // our way up through the superclass chain | |
1459 if (!instanceKlass::cast(kh())->find_field_from_offset(offset, false, | |
1460 &fd)) { | |
1461 assert(false, "cannot find instance field"); | |
1462 return NULL; // robustness | |
1463 } | |
1464 } | |
1465 | |
1466 return (jbyteArray) JNIHandles::make_local(env, fd.annotations()); | |
1467 JVM_END | |
1468 | |
1469 | |
1470 static methodOop jvm_get_method_common(jobject method, TRAPS) { | |
1471 // some of this code was adapted from from jni_FromReflectedMethod | |
1472 | |
1473 oop reflected = JNIHandles::resolve_non_null(method); | |
1474 oop mirror = NULL; | |
1475 int slot = 0; | |
1476 | |
1142 | 1477 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
0 | 1478 mirror = java_lang_reflect_Constructor::clazz(reflected); |
1479 slot = java_lang_reflect_Constructor::slot(reflected); | |
1480 } else { | |
1142 | 1481 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
0 | 1482 "wrong type"); |
1483 mirror = java_lang_reflect_Method::clazz(reflected); | |
1484 slot = java_lang_reflect_Method::slot(reflected); | |
1485 } | |
1486 klassOop k = java_lang_Class::as_klassOop(mirror); | |
1487 | |
1488 KlassHandle kh(THREAD, k); | |
1489 methodOop m = instanceKlass::cast(kh())->method_with_idnum(slot); | |
1490 if (m == NULL) { | |
1491 assert(false, "cannot find method"); | |
1492 return NULL; // robustness | |
1493 } | |
1494 | |
1495 return m; | |
1496 } | |
1497 | |
1498 | |
1499 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
1500 JVMWrapper("JVM_GetMethodAnnotations"); | |
1501 | |
1502 // method is a handle to a java.lang.reflect.Method object | |
1503 methodOop m = jvm_get_method_common(method, CHECK_NULL); | |
1504 return (jbyteArray) JNIHandles::make_local(env, m->annotations()); | |
1505 JVM_END | |
1506 | |
1507 | |
1508 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
1509 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
1510 | |
1511 // method is a handle to a java.lang.reflect.Method object | |
1512 methodOop m = jvm_get_method_common(method, CHECK_NULL); | |
1513 return (jbyteArray) JNIHandles::make_local(env, m->annotation_default()); | |
1514 JVM_END | |
1515 | |
1516 | |
1517 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
1518 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
1519 | |
1520 // method is a handle to a java.lang.reflect.Method object | |
1521 methodOop m = jvm_get_method_common(method, CHECK_NULL); | |
1522 return (jbyteArray) JNIHandles::make_local(env, m->parameter_annotations()); | |
1523 JVM_END | |
1524 | |
1525 | |
1526 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
1527 | |
1528 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1529 { | |
1530 JVMWrapper("JVM_GetClassDeclaredFields"); | |
1531 JvmtiVMObjectAllocEventCollector oam; | |
1532 | |
1533 // Exclude primitive types and array types | |
1534 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
1535 Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { | |
1536 // Return empty array | |
1142 | 1537 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
0 | 1538 return (jobjectArray) JNIHandles::make_local(env, res); |
1539 } | |
1540 | |
1541 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
1542 constantPoolHandle cp(THREAD, k->constants()); | |
1543 | |
1544 // Ensure class is linked | |
1545 k->link_class(CHECK_NULL); | |
1546 | |
1547 typeArrayHandle fields(THREAD, k->fields()); | |
1548 int fields_len = fields->length(); | |
1549 | |
1550 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
1551 bool skip_backtrace = false; | |
1552 | |
1553 // Allocate result | |
1554 int num_fields; | |
1555 | |
1556 if (publicOnly) { | |
1557 num_fields = 0; | |
1558 for (int i = 0, j = 0; i < fields_len; i += instanceKlass::next_offset, j++) { | |
1559 int mods = fields->ushort_at(i + instanceKlass::access_flags_offset) & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
1560 if (mods & JVM_ACC_PUBLIC) ++num_fields; | |
1561 } | |
1562 } else { | |
1563 num_fields = fields_len / instanceKlass::next_offset; | |
1564 | |
1142 | 1565 if (k() == SystemDictionary::Throwable_klass()) { |
0 | 1566 num_fields--; |
1567 skip_backtrace = true; | |
1568 } | |
1569 } | |
1570 | |
1142 | 1571 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
0 | 1572 objArrayHandle result (THREAD, r); |
1573 | |
1574 int out_idx = 0; | |
1575 fieldDescriptor fd; | |
1576 for (int i = 0; i < fields_len; i += instanceKlass::next_offset) { | |
1577 if (skip_backtrace) { | |
1578 // 4496456 skip java.lang.Throwable.backtrace | |
1579 int offset = k->offset_from_fields(i); | |
1580 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; | |
1581 } | |
1582 | |
1583 int mods = fields->ushort_at(i + instanceKlass::access_flags_offset) & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
1584 if (!publicOnly || (mods & JVM_ACC_PUBLIC)) { | |
1585 fd.initialize(k(), i); | |
1586 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); | |
1587 result->obj_at_put(out_idx, field); | |
1588 ++out_idx; | |
1589 } | |
1590 } | |
1591 assert(out_idx == num_fields, "just checking"); | |
1592 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1593 } | |
1594 JVM_END | |
1595 | |
1596 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1597 { | |
1598 JVMWrapper("JVM_GetClassDeclaredMethods"); | |
1599 JvmtiVMObjectAllocEventCollector oam; | |
1600 | |
1601 // Exclude primitive types and array types | |
1602 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
1603 || Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { | |
1604 // Return empty array | |
1142 | 1605 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), 0, CHECK_NULL); |
0 | 1606 return (jobjectArray) JNIHandles::make_local(env, res); |
1607 } | |
1608 | |
1609 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
1610 | |
1611 // Ensure class is linked | |
1612 k->link_class(CHECK_NULL); | |
1613 | |
1614 objArrayHandle methods (THREAD, k->methods()); | |
1615 int methods_length = methods->length(); | |
1616 int num_methods = 0; | |
1617 | |
1618 int i; | |
1619 for (i = 0; i < methods_length; i++) { | |
1620 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
1621 if (!method->is_initializer()) { | |
1622 if (!publicOnly || method->is_public()) { | |
1623 ++num_methods; | |
1624 } | |
1625 } | |
1626 } | |
1627 | |
1628 // Allocate result | |
1142 | 1629 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), num_methods, CHECK_NULL); |
0 | 1630 objArrayHandle result (THREAD, r); |
1631 | |
1632 int out_idx = 0; | |
1633 for (i = 0; i < methods_length; i++) { | |
1634 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
1635 if (!method->is_initializer()) { | |
1636 if (!publicOnly || method->is_public()) { | |
1637 oop m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); | |
1638 result->obj_at_put(out_idx, m); | |
1639 ++out_idx; | |
1640 } | |
1641 } | |
1642 } | |
1643 assert(out_idx == num_methods, "just checking"); | |
1644 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1645 } | |
1646 JVM_END | |
1647 | |
1648 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1649 { | |
1650 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
1651 JvmtiVMObjectAllocEventCollector oam; | |
1652 | |
1653 // Exclude primitive types and array types | |
1654 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
1655 || Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { | |
1656 // Return empty array | |
1142 | 1657 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), 0 , CHECK_NULL); |
0 | 1658 return (jobjectArray) JNIHandles::make_local(env, res); |
1659 } | |
1660 | |
1661 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
1662 | |
1663 // Ensure class is linked | |
1664 k->link_class(CHECK_NULL); | |
1665 | |
1666 objArrayHandle methods (THREAD, k->methods()); | |
1667 int methods_length = methods->length(); | |
1668 int num_constructors = 0; | |
1669 | |
1670 int i; | |
1671 for (i = 0; i < methods_length; i++) { | |
1672 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
1673 if (method->is_initializer() && !method->is_static()) { | |
1674 if (!publicOnly || method->is_public()) { | |
1675 ++num_constructors; | |
1676 } | |
1677 } | |
1678 } | |
1679 | |
1680 // Allocate result | |
1142 | 1681 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), num_constructors, CHECK_NULL); |
0 | 1682 objArrayHandle result(THREAD, r); |
1683 | |
1684 int out_idx = 0; | |
1685 for (i = 0; i < methods_length; i++) { | |
1686 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
1687 if (method->is_initializer() && !method->is_static()) { | |
1688 if (!publicOnly || method->is_public()) { | |
1689 oop m = Reflection::new_constructor(method, CHECK_NULL); | |
1690 result->obj_at_put(out_idx, m); | |
1691 ++out_idx; | |
1692 } | |
1693 } | |
1694 } | |
1695 assert(out_idx == num_constructors, "just checking"); | |
1696 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1697 } | |
1698 JVM_END | |
1699 | |
1700 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
1701 { | |
1702 JVMWrapper("JVM_GetClassAccessFlags"); | |
1703 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1704 // Primitive type | |
1705 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1706 } | |
1707 | |
1708 Klass* k = Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls))); | |
1709 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; | |
1710 } | |
1711 JVM_END | |
1712 | |
1713 | |
1714 // Constant pool access ////////////////////////////////////////////////////////// | |
1715 | |
1716 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
1717 { | |
1718 JVMWrapper("JVM_GetClassConstantPool"); | |
1719 JvmtiVMObjectAllocEventCollector oam; | |
1720 | |
1721 // Return null for primitives and arrays | |
1722 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1723 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
1724 if (Klass::cast(k)->oop_is_instance()) { | |
1725 instanceKlassHandle k_h(THREAD, k); | |
1726 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
1727 sun_reflect_ConstantPool::set_cp_oop(jcp(), k_h->constants()); | |
1728 return JNIHandles::make_local(jcp()); | |
1729 } | |
1730 } | |
1731 return NULL; | |
1732 } | |
1733 JVM_END | |
1734 | |
1735 | |
1736 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject unused, jobject jcpool)) | |
1737 { | |
1738 JVMWrapper("JVM_ConstantPoolGetSize"); | |
1739 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1740 return cp->length(); | |
1741 } | |
1742 JVM_END | |
1743 | |
1744 | |
1745 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { | |
1746 if (!cp->is_within_bounds(index)) { | |
1747 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); | |
1748 } | |
1749 } | |
1750 | |
1751 | |
1752 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1753 { | |
1754 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
1755 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1756 bounds_check(cp, index, CHECK_NULL); | |
1757 constantTag tag = cp->tag_at(index); | |
1758 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
1759 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1760 } | |
1761 klassOop k = cp->klass_at(index, CHECK_NULL); | |
1762 return (jclass) JNIHandles::make_local(k->klass_part()->java_mirror()); | |
1763 } | |
1764 JVM_END | |
1765 | |
1766 | |
1767 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1768 { | |
1769 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
1770 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1771 bounds_check(cp, index, CHECK_NULL); | |
1772 constantTag tag = cp->tag_at(index); | |
1773 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
1774 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1775 } | |
1776 klassOop k = constantPoolOopDesc::klass_at_if_loaded(cp, index); | |
1777 if (k == NULL) return NULL; | |
1778 return (jclass) JNIHandles::make_local(k->klass_part()->java_mirror()); | |
1779 } | |
1780 JVM_END | |
1781 | |
1782 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
1783 constantTag tag = cp->tag_at(index); | |
1784 if (!tag.is_method() && !tag.is_interface_method()) { | |
1785 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1786 } | |
1787 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
1788 klassOop k_o; | |
1789 if (force_resolution) { | |
1790 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
1791 } else { | |
1792 k_o = constantPoolOopDesc::klass_at_if_loaded(cp, klass_ref); | |
1793 if (k_o == NULL) return NULL; | |
1794 } | |
1795 instanceKlassHandle k(THREAD, k_o); | |
1796 symbolOop name = cp->uncached_name_ref_at(index); | |
1797 symbolOop sig = cp->uncached_signature_ref_at(index); | |
1798 methodHandle m (THREAD, k->find_method(name, sig)); | |
1799 if (m.is_null()) { | |
1800 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
1801 } | |
1802 oop method; | |
1803 if (!m->is_initializer() || m->is_static()) { | |
1804 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
1805 } else { | |
1806 method = Reflection::new_constructor(m, CHECK_NULL); | |
1807 } | |
1808 return JNIHandles::make_local(method); | |
1809 } | |
1810 | |
1811 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1812 { | |
1813 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
1814 JvmtiVMObjectAllocEventCollector oam; | |
1815 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1816 bounds_check(cp, index, CHECK_NULL); | |
1817 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
1818 return res; | |
1819 } | |
1820 JVM_END | |
1821 | |
1822 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1823 { | |
1824 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
1825 JvmtiVMObjectAllocEventCollector oam; | |
1826 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1827 bounds_check(cp, index, CHECK_NULL); | |
1828 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
1829 return res; | |
1830 } | |
1831 JVM_END | |
1832 | |
1833 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
1834 constantTag tag = cp->tag_at(index); | |
1835 if (!tag.is_field()) { | |
1836 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1837 } | |
1838 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
1839 klassOop k_o; | |
1840 if (force_resolution) { | |
1841 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
1842 } else { | |
1843 k_o = constantPoolOopDesc::klass_at_if_loaded(cp, klass_ref); | |
1844 if (k_o == NULL) return NULL; | |
1845 } | |
1846 instanceKlassHandle k(THREAD, k_o); | |
1847 symbolOop name = cp->uncached_name_ref_at(index); | |
1848 symbolOop sig = cp->uncached_signature_ref_at(index); | |
1849 fieldDescriptor fd; | |
1850 klassOop target_klass = k->find_field(name, sig, &fd); | |
1851 if (target_klass == NULL) { | |
1852 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
1853 } | |
1854 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
1855 return JNIHandles::make_local(field); | |
1856 } | |
1857 | |
1858 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1859 { | |
1860 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
1861 JvmtiVMObjectAllocEventCollector oam; | |
1862 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1863 bounds_check(cp, index, CHECK_NULL); | |
1864 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
1865 return res; | |
1866 } | |
1867 JVM_END | |
1868 | |
1869 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1870 { | |
1871 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
1872 JvmtiVMObjectAllocEventCollector oam; | |
1873 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1874 bounds_check(cp, index, CHECK_NULL); | |
1875 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
1876 return res; | |
1877 } | |
1878 JVM_END | |
1879 | |
1880 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1881 { | |
1882 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
1883 JvmtiVMObjectAllocEventCollector oam; | |
1884 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1885 bounds_check(cp, index, CHECK_NULL); | |
1886 constantTag tag = cp->tag_at(index); | |
1887 if (!tag.is_field_or_method()) { | |
1888 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1889 } | |
1890 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
1891 symbolHandle klass_name (THREAD, cp->klass_name_at(klass_ref)); | |
1892 symbolHandle member_name(THREAD, cp->uncached_name_ref_at(index)); | |
1893 symbolHandle member_sig (THREAD, cp->uncached_signature_ref_at(index)); | |
1142 | 1894 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
0 | 1895 objArrayHandle dest(THREAD, dest_o); |
1896 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
1897 dest->obj_at_put(0, str()); | |
1898 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
1899 dest->obj_at_put(1, str()); | |
1900 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
1901 dest->obj_at_put(2, str()); | |
1902 return (jobjectArray) JNIHandles::make_local(dest()); | |
1903 } | |
1904 JVM_END | |
1905 | |
1906 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1907 { | |
1908 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
1909 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1910 bounds_check(cp, index, CHECK_0); | |
1911 constantTag tag = cp->tag_at(index); | |
1912 if (!tag.is_int()) { | |
1913 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1914 } | |
1915 return cp->int_at(index); | |
1916 } | |
1917 JVM_END | |
1918 | |
1919 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1920 { | |
1921 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
1922 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1923 bounds_check(cp, index, CHECK_(0L)); | |
1924 constantTag tag = cp->tag_at(index); | |
1925 if (!tag.is_long()) { | |
1926 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1927 } | |
1928 return cp->long_at(index); | |
1929 } | |
1930 JVM_END | |
1931 | |
1932 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1933 { | |
1934 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
1935 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1936 bounds_check(cp, index, CHECK_(0.0f)); | |
1937 constantTag tag = cp->tag_at(index); | |
1938 if (!tag.is_float()) { | |
1939 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1940 } | |
1941 return cp->float_at(index); | |
1942 } | |
1943 JVM_END | |
1944 | |
1945 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1946 { | |
1947 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
1948 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1949 bounds_check(cp, index, CHECK_(0.0)); | |
1950 constantTag tag = cp->tag_at(index); | |
1951 if (!tag.is_double()) { | |
1952 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1953 } | |
1954 return cp->double_at(index); | |
1955 } | |
1956 JVM_END | |
1957 | |
1958 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1959 { | |
1960 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
1961 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1962 bounds_check(cp, index, CHECK_NULL); | |
1963 constantTag tag = cp->tag_at(index); | |
1964 if (!tag.is_string() && !tag.is_unresolved_string()) { | |
1965 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1966 } | |
1967 oop str = cp->string_at(index, CHECK_NULL); | |
1968 return (jstring) JNIHandles::make_local(str); | |
1969 } | |
1970 JVM_END | |
1971 | |
1972 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1973 { | |
1974 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
1975 JvmtiVMObjectAllocEventCollector oam; | |
1976 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1977 bounds_check(cp, index, CHECK_NULL); | |
1978 constantTag tag = cp->tag_at(index); | |
1979 if (!tag.is_symbol()) { | |
1980 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1981 } | |
1982 symbolOop sym_o = cp->symbol_at(index); | |
1983 symbolHandle sym(THREAD, sym_o); | |
1984 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
1985 return (jstring) JNIHandles::make_local(str()); | |
1986 } | |
1987 JVM_END | |
1988 | |
1989 | |
1990 // Assertion support. ////////////////////////////////////////////////////////// | |
1991 | |
1992 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
1993 JVMWrapper("JVM_DesiredAssertionStatus"); | |
1994 assert(cls != NULL, "bad class"); | |
1995 | |
1996 oop r = JNIHandles::resolve(cls); | |
1997 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
1998 if (java_lang_Class::is_primitive(r)) return false; | |
1999 | |
2000 klassOop k = java_lang_Class::as_klassOop(r); | |
2001 assert(Klass::cast(k)->oop_is_instance(), "must be an instance klass"); | |
2002 if (! Klass::cast(k)->oop_is_instance()) return false; | |
2003 | |
2004 ResourceMark rm(THREAD); | |
2005 const char* name = Klass::cast(k)->name()->as_C_string(); | |
2006 bool system_class = Klass::cast(k)->class_loader() == NULL; | |
2007 return JavaAssertions::enabled(name, system_class); | |
2008 | |
2009 JVM_END | |
2010 | |
2011 | |
2012 // Return a new AssertionStatusDirectives object with the fields filled in with | |
2013 // command-line assertion arguments (i.e., -ea, -da). | |
2014 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
2015 JVMWrapper("JVM_AssertionStatusDirectives"); | |
2016 JvmtiVMObjectAllocEventCollector oam; | |
2017 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
2018 return JNIHandles::make_local(env, asd); | |
2019 JVM_END | |
2020 | |
2021 // Verification //////////////////////////////////////////////////////////////////////////////// | |
2022 | |
2023 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
2024 | |
2025 // RedefineClasses support: bug 6214132 caused verification to fail. | |
2026 // All functions from this section should call the jvmtiThreadSate function: | |
2027 // klassOop class_to_verify_considering_redefinition(klassOop klass). | |
2028 // The function returns a klassOop of the _scratch_class if the verifier | |
2029 // was invoked in the middle of the class redefinition. | |
2030 // Otherwise it returns its argument value which is the _the_class klassOop. | |
2031 // Please, refer to the description in the jvmtiThreadSate.hpp. | |
2032 | |
2033 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
2034 JVMWrapper("JVM_GetClassNameUTF"); | |
2035 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2036 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2037 return Klass::cast(k)->name()->as_utf8(); | |
2038 JVM_END | |
2039 | |
2040 | |
2041 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
2042 JVMWrapper("JVM_GetClassCPTypes"); | |
2043 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2044 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2045 // types will have length zero if this is not an instanceKlass | |
2046 // (length is determined by call to JVM_GetClassCPEntriesCount) | |
2047 if (Klass::cast(k)->oop_is_instance()) { | |
2048 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2049 for (int index = cp->length() - 1; index >= 0; index--) { | |
2050 constantTag tag = cp->tag_at(index); | |
2051 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : | |
2052 (tag.is_unresolved_string()) ? JVM_CONSTANT_String : tag.value(); | |
2053 } | |
2054 } | |
2055 JVM_END | |
2056 | |
2057 | |
2058 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
2059 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
2060 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2061 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2062 if (!Klass::cast(k)->oop_is_instance()) | |
2063 return 0; | |
2064 return instanceKlass::cast(k)->constants()->length(); | |
2065 JVM_END | |
2066 | |
2067 | |
2068 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
2069 JVMWrapper("JVM_GetClassFieldsCount"); | |
2070 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2071 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2072 if (!Klass::cast(k)->oop_is_instance()) | |
2073 return 0; | |
2074 return instanceKlass::cast(k)->fields()->length() / instanceKlass::next_offset; | |
2075 JVM_END | |
2076 | |
2077 | |
2078 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
2079 JVMWrapper("JVM_GetClassMethodsCount"); | |
2080 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2081 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2082 if (!Klass::cast(k)->oop_is_instance()) | |
2083 return 0; | |
2084 return instanceKlass::cast(k)->methods()->length(); | |
2085 JVM_END | |
2086 | |
2087 | |
2088 // The following methods, used for the verifier, are never called with | |
2089 // array klasses, so a direct cast to instanceKlass is safe. | |
2090 // Typically, these methods are called in a loop with bounds determined | |
2091 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
2092 // zero for arrays. | |
2093 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
2094 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
2095 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2096 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2097 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2098 int length = methodOop(method)->checked_exceptions_length(); | |
2099 if (length > 0) { | |
2100 CheckedExceptionElement* table= methodOop(method)->checked_exceptions_start(); | |
2101 for (int i = 0; i < length; i++) { | |
2102 exceptions[i] = table[i].class_cp_index; | |
2103 } | |
2104 } | |
2105 JVM_END | |
2106 | |
2107 | |
2108 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
2109 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
2110 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2111 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2112 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2113 return methodOop(method)->checked_exceptions_length(); | |
2114 JVM_END | |
2115 | |
2116 | |
2117 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
2118 JVMWrapper("JVM_GetMethodIxByteCode"); | |
2119 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2120 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2121 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2122 memcpy(code, methodOop(method)->code_base(), methodOop(method)->code_size()); | |
2123 JVM_END | |
2124 | |
2125 | |
2126 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
2127 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
2128 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2129 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2130 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2131 return methodOop(method)->code_size(); | |
2132 JVM_END | |
2133 | |
2134 | |
2135 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
2136 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
2137 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2138 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2139 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2140 typeArrayOop extable = methodOop(method)->exception_table(); | |
2141 entry->start_pc = extable->int_at(entry_index * 4); | |
2142 entry->end_pc = extable->int_at(entry_index * 4 + 1); | |
2143 entry->handler_pc = extable->int_at(entry_index * 4 + 2); | |
2144 entry->catchType = extable->int_at(entry_index * 4 + 3); | |
2145 JVM_END | |
2146 | |
2147 | |
2148 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
2149 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
2150 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2151 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2152 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2153 return methodOop(method)->exception_table()->length() / 4; | |
2154 JVM_END | |
2155 | |
2156 | |
2157 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
2158 JVMWrapper("JVM_GetMethodIxModifiers"); | |
2159 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2160 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2161 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2162 return methodOop(method)->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
2163 JVM_END | |
2164 | |
2165 | |
2166 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
2167 JVMWrapper("JVM_GetFieldIxModifiers"); | |
2168 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2169 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2170 typeArrayOop fields = instanceKlass::cast(k)->fields(); | |
2171 return fields->ushort_at(field_index * instanceKlass::next_offset + instanceKlass::access_flags_offset) & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
2172 JVM_END | |
2173 | |
2174 | |
2175 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
2176 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
2177 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2178 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2179 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2180 return methodOop(method)->max_locals(); | |
2181 JVM_END | |
2182 | |
2183 | |
2184 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
2185 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
2186 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2187 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2188 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2189 return methodOop(method)->size_of_parameters(); | |
2190 JVM_END | |
2191 | |
2192 | |
2193 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
2194 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
2195 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2196 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2197 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2198 return methodOop(method)->max_stack(); | |
2199 JVM_END | |
2200 | |
2201 | |
2202 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
2203 JVMWrapper("JVM_IsConstructorIx"); | |
2204 ResourceMark rm(THREAD); | |
2205 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2206 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2207 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2208 return methodOop(method)->name() == vmSymbols::object_initializer_name(); | |
2209 JVM_END | |
2210 | |
2211 | |
2212 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) | |
2213 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
2214 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2215 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2216 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2217 return methodOop(method)->name()->as_utf8(); | |
2218 JVM_END | |
2219 | |
2220 | |
2221 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
2222 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
2223 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2224 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2225 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2226 return methodOop(method)->signature()->as_utf8(); | |
2227 JVM_END | |
2228 | |
2229 /** | |
2230 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
2231 * read entries in the constant pool. Since the old verifier always | |
2232 * works on a copy of the code, it will not see any rewriting that | |
2233 * may possibly occur in the middle of verification. So it is important | |
2234 * that nothing it calls tries to use the cpCache instead of the raw | |
2235 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
2236 */ | |
2237 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2238 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
2239 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2240 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2241 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2242 switch (cp->tag_at(cp_index).value()) { | |
2243 case JVM_CONSTANT_Fieldref: | |
2244 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
2245 default: | |
2246 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
2247 } | |
2248 ShouldNotReachHere(); | |
2249 return NULL; | |
2250 JVM_END | |
2251 | |
2252 | |
2253 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2254 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
2255 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2256 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2257 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2258 switch (cp->tag_at(cp_index).value()) { | |
2259 case JVM_CONSTANT_InterfaceMethodref: | |
2260 case JVM_CONSTANT_Methodref: | |
1059
389049f3f393
6858164: invokedynamic code needs some cleanup (post-6655638)
jrose
parents:
973
diff
changeset
|
2261 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2262 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
2263 default: | |
2264 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
2265 } | |
2266 ShouldNotReachHere(); | |
2267 return NULL; | |
2268 JVM_END | |
2269 | |
2270 | |
2271 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2272 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
2273 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2274 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2275 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2276 switch (cp->tag_at(cp_index).value()) { | |
2277 case JVM_CONSTANT_InterfaceMethodref: | |
2278 case JVM_CONSTANT_Methodref: | |
1059
389049f3f393
6858164: invokedynamic code needs some cleanup (post-6655638)
jrose
parents:
973
diff
changeset
|
2279 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2280 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
2281 default: | |
2282 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
2283 } | |
2284 ShouldNotReachHere(); | |
2285 return NULL; | |
2286 JVM_END | |
2287 | |
2288 | |
2289 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2290 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
2291 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2292 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2293 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2294 switch (cp->tag_at(cp_index).value()) { | |
2295 case JVM_CONSTANT_Fieldref: | |
2296 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
2297 default: | |
2298 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
2299 } | |
2300 ShouldNotReachHere(); | |
2301 return NULL; | |
2302 JVM_END | |
2303 | |
2304 | |
2305 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2306 JVMWrapper("JVM_GetCPClassNameUTF"); | |
2307 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2308 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2309 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2310 symbolOop classname = cp->klass_name_at(cp_index); | |
2311 return classname->as_utf8(); | |
2312 JVM_END | |
2313 | |
2314 | |
2315 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2316 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
2317 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2318 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2319 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2320 switch (cp->tag_at(cp_index).value()) { | |
2321 case JVM_CONSTANT_Fieldref: { | |
2322 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
2323 symbolOop classname = cp->klass_name_at(class_index); | |
2324 return classname->as_utf8(); | |
2325 } | |
2326 default: | |
2327 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
2328 } | |
2329 ShouldNotReachHere(); | |
2330 return NULL; | |
2331 JVM_END | |
2332 | |
2333 | |
2334 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2335 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
2336 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2337 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2338 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2339 switch (cp->tag_at(cp_index).value()) { | |
2340 case JVM_CONSTANT_Methodref: | |
2341 case JVM_CONSTANT_InterfaceMethodref: { | |
2342 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
2343 symbolOop classname = cp->klass_name_at(class_index); | |
2344 return classname->as_utf8(); | |
2345 } | |
2346 default: | |
2347 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
2348 } | |
2349 ShouldNotReachHere(); | |
2350 return NULL; | |
2351 JVM_END | |
2352 | |
2353 | |
2354 JVM_QUICK_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
2355 JVMWrapper("JVM_GetCPFieldModifiers"); | |
2356 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2357 klassOop k_called = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(called_cls)); | |
2358 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2359 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
2360 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2361 constantPoolOop cp_called = instanceKlass::cast(k_called)->constants(); | |
2362 switch (cp->tag_at(cp_index).value()) { | |
2363 case JVM_CONSTANT_Fieldref: { | |
2364 symbolOop name = cp->uncached_name_ref_at(cp_index); | |
2365 symbolOop signature = cp->uncached_signature_ref_at(cp_index); | |
2366 typeArrayOop fields = instanceKlass::cast(k_called)->fields(); | |
2367 int fields_count = fields->length(); | |
2368 for (int i = 0; i < fields_count; i += instanceKlass::next_offset) { | |
2369 if (cp_called->symbol_at(fields->ushort_at(i + instanceKlass::name_index_offset)) == name && | |
2370 cp_called->symbol_at(fields->ushort_at(i + instanceKlass::signature_index_offset)) == signature) { | |
2371 return fields->ushort_at(i + instanceKlass::access_flags_offset) & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
2372 } | |
2373 } | |
2374 return -1; | |
2375 } | |
2376 default: | |
2377 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
2378 } | |
2379 ShouldNotReachHere(); | |
2380 return 0; | |
2381 JVM_END | |
2382 | |
2383 | |
2384 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
2385 JVMWrapper("JVM_GetCPMethodModifiers"); | |
2386 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2387 klassOop k_called = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(called_cls)); | |
2388 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2389 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
2390 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2391 switch (cp->tag_at(cp_index).value()) { | |
2392 case JVM_CONSTANT_Methodref: | |
2393 case JVM_CONSTANT_InterfaceMethodref: { | |
2394 symbolOop name = cp->uncached_name_ref_at(cp_index); | |
2395 symbolOop signature = cp->uncached_signature_ref_at(cp_index); | |
2396 objArrayOop methods = instanceKlass::cast(k_called)->methods(); | |
2397 int methods_count = methods->length(); | |
2398 for (int i = 0; i < methods_count; i++) { | |
2399 methodOop method = methodOop(methods->obj_at(i)); | |
2400 if (method->name() == name && method->signature() == signature) { | |
2401 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
2402 } | |
2403 } | |
2404 return -1; | |
2405 } | |
2406 default: | |
2407 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
2408 } | |
2409 ShouldNotReachHere(); | |
2410 return 0; | |
2411 JVM_END | |
2412 | |
2413 | |
2414 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
2415 | |
2416 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
2417 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
2418 JVM_END | |
2419 | |
2420 | |
2421 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
2422 JVMWrapper("JVM_IsSameClassPackage"); | |
2423 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
2424 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
2425 klassOop klass1 = java_lang_Class::as_klassOop(class1_mirror); | |
2426 klassOop klass2 = java_lang_Class::as_klassOop(class2_mirror); | |
2427 return (jboolean) Reflection::is_same_class_package(klass1, klass2); | |
2428 JVM_END | |
2429 | |
2430 | |
2431 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
2432 | |
2433 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
2434 JVMWrapper2("JVM_Open (%s)", fname); | |
2435 | |
2436 //%note jvm_r6 | |
2437 int result = hpi::open(fname, flags, mode); | |
2438 if (result >= 0) { | |
2439 return result; | |
2440 } else { | |
2441 switch(errno) { | |
2442 case EEXIST: | |
2443 return JVM_EEXIST; | |
2444 default: | |
2445 return -1; | |
2446 } | |
2447 } | |
2448 JVM_END | |
2449 | |
2450 | |
2451 JVM_LEAF(jint, JVM_Close(jint fd)) | |
2452 JVMWrapper2("JVM_Close (0x%x)", fd); | |
2453 //%note jvm_r6 | |
2454 return hpi::close(fd); | |
2455 JVM_END | |
2456 | |
2457 | |
2458 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
2459 JVMWrapper2("JVM_Read (0x%x)", fd); | |
2460 | |
2461 //%note jvm_r6 | |
2462 return (jint)hpi::read(fd, buf, nbytes); | |
2463 JVM_END | |
2464 | |
2465 | |
2466 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
2467 JVMWrapper2("JVM_Write (0x%x)", fd); | |
2468 | |
2469 //%note jvm_r6 | |
2470 return (jint)hpi::write(fd, buf, nbytes); | |
2471 JVM_END | |
2472 | |
2473 | |
2474 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
2475 JVMWrapper2("JVM_Available (0x%x)", fd); | |
2476 //%note jvm_r6 | |
2477 return hpi::available(fd, pbytes); | |
2478 JVM_END | |
2479 | |
2480 | |
2481 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
2482 JVMWrapper4("JVM_Lseek (0x%x, %Ld, %d)", fd, offset, whence); | |
2483 //%note jvm_r6 | |
2484 return hpi::lseek(fd, offset, whence); | |
2485 JVM_END | |
2486 | |
2487 | |
2488 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
2489 JVMWrapper3("JVM_SetLength (0x%x, %Ld)", fd, length); | |
2490 return hpi::ftruncate(fd, length); | |
2491 JVM_END | |
2492 | |
2493 | |
2494 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
2495 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
2496 //%note jvm_r6 | |
2497 return hpi::fsync(fd); | |
2498 JVM_END | |
2499 | |
2500 | |
2501 // Printing support ////////////////////////////////////////////////// | |
2502 extern "C" { | |
2503 | |
2504 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { | |
2505 // see bug 4399518, 4417214 | |
2506 if ((intptr_t)count <= 0) return -1; | |
2507 return vsnprintf(str, count, fmt, args); | |
2508 } | |
2509 | |
2510 | |
2511 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { | |
2512 va_list args; | |
2513 int len; | |
2514 va_start(args, fmt); | |
2515 len = jio_vsnprintf(str, count, fmt, args); | |
2516 va_end(args); | |
2517 return len; | |
2518 } | |
2519 | |
2520 | |
2521 int jio_fprintf(FILE* f, const char *fmt, ...) { | |
2522 int len; | |
2523 va_list args; | |
2524 va_start(args, fmt); | |
2525 len = jio_vfprintf(f, fmt, args); | |
2526 va_end(args); | |
2527 return len; | |
2528 } | |
2529 | |
2530 | |
2531 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { | |
2532 if (Arguments::vfprintf_hook() != NULL) { | |
2533 return Arguments::vfprintf_hook()(f, fmt, args); | |
2534 } else { | |
2535 return vfprintf(f, fmt, args); | |
2536 } | |
2537 } | |
2538 | |
2539 | |
2540 int jio_printf(const char *fmt, ...) { | |
2541 int len; | |
2542 va_list args; | |
2543 va_start(args, fmt); | |
2544 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
2545 va_end(args); | |
2546 return len; | |
2547 } | |
2548 | |
2549 | |
2550 // HotSpot specific jio method | |
2551 void jio_print(const char* s) { | |
2552 // Try to make this function as atomic as possible. | |
2553 if (Arguments::vfprintf_hook() != NULL) { | |
2554 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
2555 } else { | |
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2556 // Make an unused local variable to avoid warning from gcc 4.x compiler. |
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2557 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
0 | 2558 } |
2559 } | |
2560 | |
2561 } // Extern C | |
2562 | |
2563 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
2564 | |
2565 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
2566 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
2567 // OSThread objects. The exception to this rule is when the target object is the thread | |
2568 // doing the operation, in which case we know that the thread won't exit until the | |
2569 // operation is done (all exits being voluntary). There are a few cases where it is | |
2570 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
2571 // you are alive. While these can still happen, they are not subject to deadlocks if | |
2572 // the lock is held while the operation occurs (this is not the case for suspend, for | |
2573 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
2574 // implementation is local to this file, we always lock Threads_lock for that one. | |
2575 | |
2576 static void thread_entry(JavaThread* thread, TRAPS) { | |
2577 HandleMark hm(THREAD); | |
2578 Handle obj(THREAD, thread->threadObj()); | |
2579 JavaValue result(T_VOID); | |
2580 JavaCalls::call_virtual(&result, | |
2581 obj, | |
1142 | 2582 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
0 | 2583 vmSymbolHandles::run_method_name(), |
2584 vmSymbolHandles::void_method_signature(), | |
2585 THREAD); | |
2586 } | |
2587 | |
2588 | |
2589 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
2590 JVMWrapper("JVM_StartThread"); | |
2591 JavaThread *native_thread = NULL; | |
2592 | |
2593 // We cannot hold the Threads_lock when we throw an exception, | |
2594 // due to rank ordering issues. Example: we might need to grab the | |
2595 // Heap_lock while we construct the exception. | |
2596 bool throw_illegal_thread_state = false; | |
2597 | |
2598 // We must release the Threads_lock before we can post a jvmti event | |
2599 // in Thread::start. | |
2600 { | |
2601 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
2602 // we operate. | |
2603 MutexLocker mu(Threads_lock); | |
2604 | |
2605 // Check to see if we're running a thread that's already exited or was | |
2606 // stopped (is_stillborn) or is still active (thread is not NULL). | |
2607 if (java_lang_Thread::is_stillborn(JNIHandles::resolve_non_null(jthread)) || | |
2608 java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)) != NULL) { | |
2609 throw_illegal_thread_state = true; | |
2610 } else { | |
2611 jlong size = | |
2612 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
2613 // Allocate the C++ Thread structure and create the native thread. The | |
2614 // stack size retrieved from java is signed, but the constructor takes | |
2615 // size_t (an unsigned type), so avoid passing negative values which would | |
2616 // result in really large stacks. | |
2617 size_t sz = size > 0 ? (size_t) size : 0; | |
2618 native_thread = new JavaThread(&thread_entry, sz); | |
2619 | |
2620 // At this point it may be possible that no osthread was created for the | |
2621 // JavaThread due to lack of memory. Check for this situation and throw | |
2622 // an exception if necessary. Eventually we may want to change this so | |
2623 // that we only grab the lock if the thread was created successfully - | |
2624 // then we can also do this check and throw the exception in the | |
2625 // JavaThread constructor. | |
2626 if (native_thread->osthread() != NULL) { | |
2627 // Note: the current thread is not being used within "prepare". | |
2628 native_thread->prepare(jthread); | |
2629 } | |
2630 } | |
2631 } | |
2632 | |
2633 if (throw_illegal_thread_state) { | |
2634 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
2635 } | |
2636 | |
2637 assert(native_thread != NULL, "Starting null thread?"); | |
2638 | |
2639 if (native_thread->osthread() == NULL) { | |
2640 // No one should hold a reference to the 'native_thread'. | |
2641 delete native_thread; | |
2642 if (JvmtiExport::should_post_resource_exhausted()) { | |
2643 JvmtiExport::post_resource_exhausted( | |
2644 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
2645 "unable to create new native thread"); | |
2646 } | |
2647 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
2648 "unable to create new native thread"); | |
2649 } | |
2650 | |
2651 Thread::start(native_thread); | |
2652 | |
2653 JVM_END | |
2654 | |
2655 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
2656 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
2657 // but is thought to be reliable and simple. In the case, where the receiver is the | |
2658 // save thread as the sender, no safepoint is needed. | |
2659 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) | |
2660 JVMWrapper("JVM_StopThread"); | |
2661 | |
2662 oop java_throwable = JNIHandles::resolve(throwable); | |
2663 if (java_throwable == NULL) { | |
2664 THROW(vmSymbols::java_lang_NullPointerException()); | |
2665 } | |
2666 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2667 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
2668 Events::log("JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", receiver, (address)java_thread, throwable); | |
2669 // First check if thread already exited | |
2670 if (receiver != NULL) { | |
2671 // Check if exception is getting thrown at self (use oop equality, since the | |
2672 // target object might exit) | |
2673 if (java_thread == thread->threadObj()) { | |
2674 // This is a change from JDK 1.1, but JDK 1.2 will also do it: | |
2675 // NOTE (from JDK 1.2): this is done solely to prevent stopped | |
2676 // threads from being restarted. | |
2677 // Fix for 4314342, 4145910, perhaps others: it now doesn't have | |
2678 // any effect on the "liveness" of a thread; see | |
2679 // JVM_IsThreadAlive, below. | |
1142 | 2680 if (java_throwable->is_a(SystemDictionary::ThreadDeath_klass())) { |
0 | 2681 java_lang_Thread::set_stillborn(java_thread); |
2682 } | |
2683 THROW_OOP(java_throwable); | |
2684 } else { | |
2685 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
2686 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
2687 } | |
2688 } | |
2689 JVM_END | |
2690 | |
2691 | |
2692 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
2693 JVMWrapper("JVM_IsThreadAlive"); | |
2694 | |
2695 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
2696 return java_lang_Thread::is_alive(thread_oop); | |
2697 JVM_END | |
2698 | |
2699 | |
2700 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
2701 JVMWrapper("JVM_SuspendThread"); | |
2702 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2703 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
2704 | |
2705 if (receiver != NULL) { | |
2706 // thread has run and has not exited (still on threads list) | |
2707 | |
2708 { | |
2709 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
2710 if (receiver->is_external_suspend()) { | |
2711 // Don't allow nested external suspend requests. We can't return | |
2712 // an error from this interface so just ignore the problem. | |
2713 return; | |
2714 } | |
2715 if (receiver->is_exiting()) { // thread is in the process of exiting | |
2716 return; | |
2717 } | |
2718 receiver->set_external_suspend(); | |
2719 } | |
2720 | |
2721 // java_suspend() will catch threads in the process of exiting | |
2722 // and will ignore them. | |
2723 receiver->java_suspend(); | |
2724 | |
2725 // It would be nice to have the following assertion in all the | |
2726 // time, but it is possible for a racing resume request to have | |
2727 // resumed this thread right after we suspended it. Temporarily | |
2728 // enable this assertion if you are chasing a different kind of | |
2729 // bug. | |
2730 // | |
2731 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
2732 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
2733 } | |
2734 JVM_END | |
2735 | |
2736 | |
2737 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
2738 JVMWrapper("JVM_ResumeThread"); | |
2739 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
2740 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
2741 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
2742 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
2743 // looks at it. | |
2744 MutexLocker ml(Threads_lock); | |
2745 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
2746 if (thr != NULL) { | |
2747 // the thread has run and is not in the process of exiting | |
2748 thr->java_resume(); | |
2749 } | |
2750 JVM_END | |
2751 | |
2752 | |
2753 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
2754 JVMWrapper("JVM_SetThreadPriority"); | |
2755 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
2756 MutexLocker ml(Threads_lock); | |
2757 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2758 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
2759 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
2760 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
2761 Thread::set_priority(thr, (ThreadPriority)prio); | |
2762 } | |
2763 JVM_END | |
2764 | |
2765 | |
2766 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
2767 JVMWrapper("JVM_Yield"); | |
2768 if (os::dont_yield()) return; | |
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2769 HS_DTRACE_PROBE0(hotspot, thread__yield); |
0 | 2770 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
2771 // Critical for similar threading behaviour | |
2772 if (ConvertYieldToSleep) { | |
2773 os::sleep(thread, MinSleepInterval, false); | |
2774 } else { | |
2775 os::yield(); | |
2776 } | |
2777 JVM_END | |
2778 | |
2779 | |
2780 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
2781 JVMWrapper("JVM_Sleep"); | |
2782 | |
2783 if (millis < 0) { | |
2784 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
2785 } | |
2786 | |
2787 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
2788 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
2789 } | |
2790 | |
2791 // Save current thread state and restore it at the end of this block. | |
2792 // And set new thread state to SLEEPING. | |
2793 JavaThreadSleepState jtss(thread); | |
2794 | |
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2795 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); |
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2796 |
0 | 2797 if (millis == 0) { |
2798 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
2799 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
2800 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
2801 // for SOLARIS | |
2802 if (ConvertSleepToYield) { | |
2803 os::yield(); | |
2804 } else { | |
2805 ThreadState old_state = thread->osthread()->get_state(); | |
2806 thread->osthread()->set_state(SLEEPING); | |
2807 os::sleep(thread, MinSleepInterval, false); | |
2808 thread->osthread()->set_state(old_state); | |
2809 } | |
2810 } else { | |
2811 ThreadState old_state = thread->osthread()->get_state(); | |
2812 thread->osthread()->set_state(SLEEPING); | |
2813 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
2814 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
2815 // us while we were sleeping. We do not overwrite those. | |
2816 if (!HAS_PENDING_EXCEPTION) { | |
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2817 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); |
0 | 2818 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
2819 // to properly restore the thread state. That's likely wrong. | |
2820 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
2821 } | |
2822 } | |
2823 thread->osthread()->set_state(old_state); | |
2824 } | |
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2825 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); |
0 | 2826 JVM_END |
2827 | |
2828 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
2829 JVMWrapper("JVM_CurrentThread"); | |
2830 oop jthread = thread->threadObj(); | |
2831 assert (thread != NULL, "no current thread!"); | |
2832 return JNIHandles::make_local(env, jthread); | |
2833 JVM_END | |
2834 | |
2835 | |
2836 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
2837 JVMWrapper("JVM_CountStackFrames"); | |
2838 | |
2839 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
2840 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2841 bool throw_illegal_thread_state = false; | |
2842 int count = 0; | |
2843 | |
2844 { | |
2845 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
2846 // We need to re-resolve the java_thread, since a GC might have happened during the | |
2847 // acquire of the lock | |
2848 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
2849 | |
2850 if (thr == NULL) { | |
2851 // do nothing | |
2852 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
2853 // Check whether this java thread has been suspended already. If not, throws | |
2854 // IllegalThreadStateException. We defer to throw that exception until | |
2855 // Threads_lock is released since loading exception class has to leave VM. | |
2856 // The correct way to test a thread is actually suspended is | |
2857 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
2858 // the Threads_lock. The above tests are sufficient for our purposes | |
2859 // provided the walkability of the stack is stable - which it isn't | |
2860 // 100% but close enough for most practical purposes. | |
2861 throw_illegal_thread_state = true; | |
2862 } else { | |
2863 // Count all java activation, i.e., number of vframes | |
2864 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
2865 // Native frames are not counted | |
2866 if (!vfst.method()->is_native()) count++; | |
2867 } | |
2868 } | |
2869 } | |
2870 | |
2871 if (throw_illegal_thread_state) { | |
2872 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
2873 "this thread is not suspended"); | |
2874 } | |
2875 return count; | |
2876 JVM_END | |
2877 | |
2878 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
2879 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
2880 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
2881 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
2882 // outside the critical section. Threads_lock is hot so we want to minimize | |
2883 // the hold-time. A cleaner interface would be to decompose interrupt into | |
2884 // two steps. The 1st phase, performed under Threads_lock, would return | |
2885 // a closure that'd be invoked after Threads_lock was dropped. | |
2886 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
2887 // admit spurious wakeups. | |
2888 | |
2889 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
2890 JVMWrapper("JVM_Interrupt"); | |
2891 | |
2892 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
2893 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2894 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
2895 // We need to re-resolve the java_thread, since a GC might have happened during the | |
2896 // acquire of the lock | |
2897 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
2898 if (thr != NULL) { | |
2899 Thread::interrupt(thr); | |
2900 } | |
2901 JVM_END | |
2902 | |
2903 | |
2904 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
2905 JVMWrapper("JVM_IsInterrupted"); | |
2906 | |
2907 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
2908 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2909 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
2910 // We need to re-resolve the java_thread, since a GC might have happened during the | |
2911 // acquire of the lock | |
2912 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
2913 if (thr == NULL) { | |
2914 return JNI_FALSE; | |
2915 } else { | |
2916 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
2917 } | |
2918 JVM_END | |
2919 | |
2920 | |
2921 // Return true iff the current thread has locked the object passed in | |
2922 | |
2923 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
2924 JVMWrapper("JVM_HoldsLock"); | |
2925 assert(THREAD->is_Java_thread(), "sanity check"); | |
2926 if (obj == NULL) { | |
2927 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
2928 } | |
2929 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
2930 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
2931 JVM_END | |
2932 | |
2933 | |
2934 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
2935 JVMWrapper("JVM_DumpAllStacks"); | |
2936 VM_PrintThreads op; | |
2937 VMThread::execute(&op); | |
2938 if (JvmtiExport::should_post_data_dump()) { | |
2939 JvmtiExport::post_data_dump(); | |
2940 } | |
2941 JVM_END | |
2942 | |
2943 | |
2944 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
2945 | |
2946 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
2947 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
2948 if (jthread->privileged_stack_top() == NULL) return false; | |
2949 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
2950 oop loader = jthread->privileged_stack_top()->class_loader(); | |
2951 if (loader == NULL) return true; | |
2952 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
2953 if (trusted) return true; | |
2954 } | |
2955 return false; | |
2956 } | |
2957 | |
2958 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
2959 JVMWrapper("JVM_CurrentLoadedClass"); | |
2960 ResourceMark rm(THREAD); | |
2961 | |
2962 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
2963 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
2964 bool trusted = is_trusted_frame(thread, &vfst); | |
2965 if (trusted) return NULL; | |
2966 | |
2967 methodOop m = vfst.method(); | |
2968 if (!m->is_native()) { | |
2969 klassOop holder = m->method_holder(); | |
2970 oop loader = instanceKlass::cast(holder)->class_loader(); | |
2971 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { | |
2972 return (jclass) JNIHandles::make_local(env, Klass::cast(holder)->java_mirror()); | |
2973 } | |
2974 } | |
2975 } | |
2976 return NULL; | |
2977 JVM_END | |
2978 | |
2979 | |
2980 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
2981 JVMWrapper("JVM_CurrentClassLoader"); | |
2982 ResourceMark rm(THREAD); | |
2983 | |
2984 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
2985 | |
2986 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
2987 bool trusted = is_trusted_frame(thread, &vfst); | |
2988 if (trusted) return NULL; | |
2989 | |
2990 methodOop m = vfst.method(); | |
2991 if (!m->is_native()) { | |
2992 klassOop holder = m->method_holder(); | |
2993 assert(holder->is_klass(), "just checking"); | |
2994 oop loader = instanceKlass::cast(holder)->class_loader(); | |
2995 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { | |
2996 return JNIHandles::make_local(env, loader); | |
2997 } | |
2998 } | |
2999 } | |
3000 return NULL; | |
3001 JVM_END | |
3002 | |
3003 | |
3004 // Utility object for collecting method holders walking down the stack | |
3005 class KlassLink: public ResourceObj { | |
3006 public: | |
3007 KlassHandle klass; | |
3008 KlassLink* next; | |
3009 | |
3010 KlassLink(KlassHandle k) { klass = k; next = NULL; } | |
3011 }; | |
3012 | |
3013 | |
3014 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
3015 JVMWrapper("JVM_GetClassContext"); | |
3016 ResourceMark rm(THREAD); | |
3017 JvmtiVMObjectAllocEventCollector oam; | |
3018 // Collect linked list of (handles to) method holders | |
3019 KlassLink* first = NULL; | |
3020 KlassLink* last = NULL; | |
3021 int depth = 0; | |
3022 | |
3023 for(vframeStream vfst(thread); !vfst.at_end(); vfst.security_get_caller_frame(1)) { | |
3024 // Native frames are not returned | |
3025 if (!vfst.method()->is_native()) { | |
3026 klassOop holder = vfst.method()->method_holder(); | |
3027 assert(holder->is_klass(), "just checking"); | |
3028 depth++; | |
3029 KlassLink* l = new KlassLink(KlassHandle(thread, holder)); | |
3030 if (first == NULL) { | |
3031 first = last = l; | |
3032 } else { | |
3033 last->next = l; | |
3034 last = l; | |
3035 } | |
3036 } | |
3037 } | |
3038 | |
3039 // Create result array of type [Ljava/lang/Class; | |
1142 | 3040 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), depth, CHECK_NULL); |
0 | 3041 // Fill in mirrors corresponding to method holders |
3042 int index = 0; | |
3043 while (first != NULL) { | |
3044 result->obj_at_put(index++, Klass::cast(first->klass())->java_mirror()); | |
3045 first = first->next; | |
3046 } | |
3047 assert(index == depth, "just checking"); | |
3048 | |
3049 return (jobjectArray) JNIHandles::make_local(env, result); | |
3050 JVM_END | |
3051 | |
3052 | |
3053 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
3054 JVMWrapper("JVM_ClassDepth"); | |
3055 ResourceMark rm(THREAD); | |
3056 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
3057 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
3058 | |
3059 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
3060 symbolHandle class_name_sym = | |
3061 symbolHandle(THREAD, SymbolTable::probe(str, (int)strlen(str))); | |
3062 if (class_name_sym.is_null()) { | |
3063 return -1; | |
3064 } | |
3065 | |
3066 int depth = 0; | |
3067 | |
3068 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3069 if (!vfst.method()->is_native()) { | |
3070 klassOop holder = vfst.method()->method_holder(); | |
3071 assert(holder->is_klass(), "just checking"); | |
3072 if (instanceKlass::cast(holder)->name() == class_name_sym()) { | |
3073 return depth; | |
3074 } | |
3075 depth++; | |
3076 } | |
3077 } | |
3078 return -1; | |
3079 JVM_END | |
3080 | |
3081 | |
3082 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
3083 JVMWrapper("JVM_ClassLoaderDepth"); | |
3084 ResourceMark rm(THREAD); | |
3085 int depth = 0; | |
3086 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3087 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
3088 bool trusted = is_trusted_frame(thread, &vfst); | |
3089 if (trusted) return -1; | |
3090 | |
3091 methodOop m = vfst.method(); | |
3092 if (!m->is_native()) { | |
3093 klassOop holder = m->method_holder(); | |
3094 assert(holder->is_klass(), "just checking"); | |
3095 oop loader = instanceKlass::cast(holder)->class_loader(); | |
3096 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { | |
3097 return depth; | |
3098 } | |
3099 depth++; | |
3100 } | |
3101 } | |
3102 return -1; | |
3103 JVM_END | |
3104 | |
3105 | |
3106 // java.lang.Package //////////////////////////////////////////////////////////////// | |
3107 | |
3108 | |
3109 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
3110 JVMWrapper("JVM_GetSystemPackage"); | |
3111 ResourceMark rm(THREAD); | |
3112 JvmtiVMObjectAllocEventCollector oam; | |
3113 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3114 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
3115 return (jstring) JNIHandles::make_local(result); | |
3116 JVM_END | |
3117 | |
3118 | |
3119 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
3120 JVMWrapper("JVM_GetSystemPackages"); | |
3121 JvmtiVMObjectAllocEventCollector oam; | |
3122 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
3123 return (jobjectArray) JNIHandles::make_local(result); | |
3124 JVM_END | |
3125 | |
3126 | |
3127 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
3128 | |
3129 bool force_verify_field_access(klassOop current_class, klassOop field_class, AccessFlags access, bool classloader_only) { | |
3130 if (current_class == NULL) { | |
3131 return true; | |
3132 } | |
3133 if ((current_class == field_class) || access.is_public()) { | |
3134 return true; | |
3135 } | |
3136 | |
3137 if (access.is_protected()) { | |
3138 // See if current_class is a subclass of field_class | |
3139 if (Klass::cast(current_class)->is_subclass_of(field_class)) { | |
3140 return true; | |
3141 } | |
3142 } | |
3143 | |
3144 return (!access.is_private() && instanceKlass::cast(current_class)->is_same_class_package(field_class)); | |
3145 } | |
3146 | |
3147 | |
3148 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
3149 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
3150 JVMWrapper("JVM_AllocateNewObject"); | |
3151 JvmtiVMObjectAllocEventCollector oam; | |
3152 // Receiver is not used | |
3153 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
3154 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
3155 | |
3156 // Cannot instantiate primitive types | |
3157 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
3158 ResourceMark rm(THREAD); | |
3159 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3160 } | |
3161 | |
3162 // Arrays not allowed here, must use JVM_AllocateNewArray | |
3163 if (Klass::cast(java_lang_Class::as_klassOop(curr_mirror))->oop_is_javaArray() || | |
3164 Klass::cast(java_lang_Class::as_klassOop(init_mirror))->oop_is_javaArray()) { | |
3165 ResourceMark rm(THREAD); | |
3166 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3167 } | |
3168 | |
3169 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_klassOop(curr_mirror)); | |
3170 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_klassOop(init_mirror)); | |
3171 | |
3172 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
3173 | |
3174 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
3175 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
3176 | |
3177 // Make sure klass is initialized, since we are about to instantiate one of them. | |
3178 curr_klass->initialize(CHECK_NULL); | |
3179 | |
3180 methodHandle m (THREAD, | |
3181 init_klass->find_method(vmSymbols::object_initializer_name(), | |
3182 vmSymbols::void_method_signature())); | |
3183 if (m.is_null()) { | |
3184 ResourceMark rm(THREAD); | |
3185 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
3186 methodOopDesc::name_and_sig_as_C_string(Klass::cast(init_klass()), | |
3187 vmSymbols::object_initializer_name(), | |
3188 vmSymbols::void_method_signature())); | |
3189 } | |
3190 | |
3191 if (curr_klass == init_klass && !m->is_public()) { | |
3192 // Calling the constructor for class 'curr_klass'. | |
3193 // Only allow calls to a public no-arg constructor. | |
3194 // This path corresponds to creating an Externalizable object. | |
3195 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3196 } | |
3197 | |
3198 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
3199 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
3200 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3201 } | |
3202 | |
3203 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
3204 // Call constructor m. This might call a constructor higher up in the hierachy | |
3205 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
3206 | |
3207 return JNIHandles::make_local(obj()); | |
3208 JVM_END | |
3209 | |
3210 | |
3211 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
3212 JVMWrapper("JVM_AllocateNewArray"); | |
3213 JvmtiVMObjectAllocEventCollector oam; | |
3214 oop mirror = JNIHandles::resolve_non_null(currClass); | |
3215 | |
3216 if (java_lang_Class::is_primitive(mirror)) { | |
3217 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3218 } | |
3219 klassOop k = java_lang_Class::as_klassOop(mirror); | |
3220 oop result; | |
3221 | |
3222 if (k->klass_part()->oop_is_typeArray()) { | |
3223 // typeArray | |
3224 result = typeArrayKlass::cast(k)->allocate(length, CHECK_NULL); | |
3225 } else if (k->klass_part()->oop_is_objArray()) { | |
3226 // objArray | |
3227 objArrayKlassHandle oak(THREAD, k); | |
3228 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) | |
3229 result = oak->allocate(length, CHECK_NULL); | |
3230 } else { | |
3231 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3232 } | |
3233 return JNIHandles::make_local(env, result); | |
3234 JVM_END | |
3235 | |
3236 | |
3237 // Return the first non-null class loader up the execution stack, or null | |
3238 // if only code from the null class loader is on the stack. | |
3239 | |
3240 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
3241 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3242 // UseNewReflection | |
3243 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
3244 klassOop holder = vfst.method()->method_holder(); | |
3245 oop loader = instanceKlass::cast(holder)->class_loader(); | |
3246 if (loader != NULL) { | |
3247 return JNIHandles::make_local(env, loader); | |
3248 } | |
3249 } | |
3250 return NULL; | |
3251 JVM_END | |
3252 | |
3253 | |
3254 // Load a class relative to the most recent class on the stack with a non-null | |
3255 // classloader. | |
3256 // This function has been deprecated and should not be considered part of the | |
3257 // specified JVM interface. | |
3258 | |
3259 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
3260 jclass currClass, jstring currClassName)) | |
3261 JVMWrapper("JVM_LoadClass0"); | |
3262 // Receiver is not used | |
3263 ResourceMark rm(THREAD); | |
3264 | |
3265 // Class name argument is not guaranteed to be in internal format | |
3266 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
3267 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
3268 | |
3269 const char* str = java_lang_String::as_utf8_string(string()); | |
3270 | |
3271 if (str == NULL || (int)strlen(str) > symbolOopDesc::max_length()) { | |
3272 // It's impossible to create this class; the name cannot fit | |
3273 // into the constant pool. | |
3274 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
3275 } | |
3276 | |
3277 symbolHandle name = oopFactory::new_symbol_handle(str, CHECK_NULL); | |
3278 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); | |
3279 // Find the most recent class on the stack with a non-null classloader | |
3280 oop loader = NULL; | |
3281 oop protection_domain = NULL; | |
3282 if (curr_klass.is_null()) { | |
3283 for (vframeStream vfst(thread); | |
3284 !vfst.at_end() && loader == NULL; | |
3285 vfst.next()) { | |
3286 if (!vfst.method()->is_native()) { | |
3287 klassOop holder = vfst.method()->method_holder(); | |
3288 loader = instanceKlass::cast(holder)->class_loader(); | |
3289 protection_domain = instanceKlass::cast(holder)->protection_domain(); | |
3290 } | |
3291 } | |
3292 } else { | |
3293 klassOop curr_klass_oop = java_lang_Class::as_klassOop(curr_klass()); | |
3294 loader = instanceKlass::cast(curr_klass_oop)->class_loader(); | |
3295 protection_domain = instanceKlass::cast(curr_klass_oop)->protection_domain(); | |
3296 } | |
3297 Handle h_loader(THREAD, loader); | |
3298 Handle h_prot (THREAD, protection_domain); | |
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
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579
diff
changeset
|
3299 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
|
3300 false, thread); |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3301 if (TraceClassResolution && result != NULL) { |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3302 trace_class_resolution(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(result))); |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
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579
diff
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|
3303 } |
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6603316: Improve instrumentation for classes loaded at startup
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parents:
579
diff
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|
3304 return result; |
0 | 3305 JVM_END |
3306 | |
3307 | |
3308 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
3309 | |
3310 | |
3311 // resolve array handle and check arguments | |
3312 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
3313 if (arr == NULL) { | |
3314 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
3315 } | |
3316 oop a = JNIHandles::resolve_non_null(arr); | |
3317 if (!a->is_javaArray() || (type_array_only && !a->is_typeArray())) { | |
3318 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); | |
3319 } | |
3320 return arrayOop(a); | |
3321 } | |
3322 | |
3323 | |
3324 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
3325 JVMWrapper("JVM_GetArrayLength"); | |
3326 arrayOop a = check_array(env, arr, false, CHECK_0); | |
3327 return a->length(); | |
3328 JVM_END | |
3329 | |
3330 | |
3331 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
3332 JVMWrapper("JVM_Array_Get"); | |
3333 JvmtiVMObjectAllocEventCollector oam; | |
3334 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
3335 jvalue value; | |
3336 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
3337 oop box = Reflection::box(&value, type, CHECK_NULL); | |
3338 return JNIHandles::make_local(env, box); | |
3339 JVM_END | |
3340 | |
3341 | |
3342 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
3343 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
3344 jvalue value; | |
3345 value.i = 0; // to initialize value before getting used in CHECK | |
3346 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
3347 assert(a->is_typeArray(), "just checking"); | |
3348 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
3349 BasicType wide_type = (BasicType) wCode; | |
3350 if (type != wide_type) { | |
3351 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
3352 } | |
3353 return value; | |
3354 JVM_END | |
3355 | |
3356 | |
3357 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
3358 JVMWrapper("JVM_SetArrayElement"); | |
3359 arrayOop a = check_array(env, arr, false, CHECK); | |
3360 oop box = JNIHandles::resolve(val); | |
3361 jvalue value; | |
3362 value.i = 0; // to initialize value before getting used in CHECK | |
3363 BasicType value_type; | |
3364 if (a->is_objArray()) { | |
3365 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
3366 value_type = Reflection::unbox_for_regular_object(box, &value); | |
3367 } else { | |
3368 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
3369 } | |
3370 Reflection::array_set(&value, a, index, value_type, CHECK); | |
3371 JVM_END | |
3372 | |
3373 | |
3374 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
3375 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
3376 arrayOop a = check_array(env, arr, true, CHECK); | |
3377 assert(a->is_typeArray(), "just checking"); | |
3378 BasicType value_type = (BasicType) vCode; | |
3379 Reflection::array_set(&v, a, index, value_type, CHECK); | |
3380 JVM_END | |
3381 | |
3382 | |
3383 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
3384 JVMWrapper("JVM_NewArray"); | |
3385 JvmtiVMObjectAllocEventCollector oam; | |
3386 oop element_mirror = JNIHandles::resolve(eltClass); | |
3387 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
3388 return JNIHandles::make_local(env, result); | |
3389 JVM_END | |
3390 | |
3391 | |
3392 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
3393 JVMWrapper("JVM_NewMultiArray"); | |
3394 JvmtiVMObjectAllocEventCollector oam; | |
3395 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
3396 oop element_mirror = JNIHandles::resolve(eltClass); | |
3397 assert(dim_array->is_typeArray(), "just checking"); | |
3398 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
3399 return JNIHandles::make_local(env, result); | |
3400 JVM_END | |
3401 | |
3402 | |
3403 // Networking library support //////////////////////////////////////////////////////////////////// | |
3404 | |
3405 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
3406 JVMWrapper("JVM_InitializeSocketLibrary"); | |
3407 return hpi::initialize_socket_library(); | |
3408 JVM_END | |
3409 | |
3410 | |
3411 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
3412 JVMWrapper("JVM_Socket"); | |
3413 return hpi::socket(domain, type, protocol); | |
3414 JVM_END | |
3415 | |
3416 | |
3417 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
3418 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
3419 //%note jvm_r6 | |
3420 return hpi::socket_close(fd); | |
3421 JVM_END | |
3422 | |
3423 | |
3424 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
3425 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
3426 //%note jvm_r6 | |
3427 return hpi::socket_shutdown(fd, howto); | |
3428 JVM_END | |
3429 | |
3430 | |
3431 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
3432 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
3433 //%note jvm_r6 | |
3434 return hpi::recv(fd, buf, nBytes, flags); | |
3435 JVM_END | |
3436 | |
3437 | |
3438 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
3439 JVMWrapper2("JVM_Send (0x%x)", fd); | |
3440 //%note jvm_r6 | |
3441 return hpi::send(fd, buf, nBytes, flags); | |
3442 JVM_END | |
3443 | |
3444 | |
3445 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
3446 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
3447 //%note jvm_r6 | |
3448 return hpi::timeout(fd, timeout); | |
3449 JVM_END | |
3450 | |
3451 | |
3452 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
3453 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
3454 //%note jvm_r6 | |
3455 return hpi::listen(fd, count); | |
3456 JVM_END | |
3457 | |
3458 | |
3459 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
3460 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
3461 //%note jvm_r6 | |
3462 return hpi::connect(fd, him, len); | |
3463 JVM_END | |
3464 | |
3465 | |
3466 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
3467 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
3468 //%note jvm_r6 | |
3469 return hpi::bind(fd, him, len); | |
3470 JVM_END | |
3471 | |
3472 | |
3473 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
3474 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
3475 //%note jvm_r6 | |
3476 return hpi::accept(fd, him, (int *)len); | |
3477 JVM_END | |
3478 | |
3479 | |
3480 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
3481 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
3482 //%note jvm_r6 | |
3483 return hpi::recvfrom(fd, buf, nBytes, flags, from, fromlen); | |
3484 JVM_END | |
3485 | |
3486 | |
3487 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
3488 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
3489 //%note jvm_r6 | |
3490 return hpi::get_sock_name(fd, him, len); | |
3491 JVM_END | |
3492 | |
3493 | |
3494 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
3495 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
3496 //%note jvm_r6 | |
3497 return hpi::sendto(fd, buf, len, flags, to, tolen); | |
3498 JVM_END | |
3499 | |
3500 | |
3501 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
3502 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
3503 //%note jvm_r6 | |
3504 return hpi::socket_available(fd, pbytes); | |
3505 JVM_END | |
3506 | |
3507 | |
3508 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
3509 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3510 //%note jvm_r6 | |
3511 return hpi::get_sock_opt(fd, level, optname, optval, optlen); | |
3512 JVM_END | |
3513 | |
3514 | |
3515 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
3516 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3517 //%note jvm_r6 | |
3518 return hpi::set_sock_opt(fd, level, optname, optval, optlen); | |
3519 JVM_END | |
3520 | |
3521 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) | |
3522 JVMWrapper("JVM_GetHostName"); | |
3523 return hpi::get_host_name(name, namelen); | |
3524 JVM_END | |
3525 | |
3526 #ifdef _WINDOWS | |
3527 | |
3528 JVM_LEAF(struct hostent*, JVM_GetHostByAddr(const char* name, int len, int type)) | |
3529 JVMWrapper("JVM_GetHostByAddr"); | |
3530 return hpi::get_host_by_addr(name, len, type); | |
3531 JVM_END | |
3532 | |
3533 | |
3534 JVM_LEAF(struct hostent*, JVM_GetHostByName(char* name)) | |
3535 JVMWrapper("JVM_GetHostByName"); | |
3536 return hpi::get_host_by_name(name); | |
3537 JVM_END | |
3538 | |
3539 | |
3540 JVM_LEAF(struct protoent*, JVM_GetProtoByName(char* name)) | |
3541 JVMWrapper("JVM_GetProtoByName"); | |
3542 return hpi::get_proto_by_name(name); | |
3543 JVM_END | |
3544 | |
3545 #endif | |
3546 | |
3547 // Library support /////////////////////////////////////////////////////////////////////////// | |
3548 | |
3549 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
3550 //%note jvm_ct | |
3551 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
3552 char ebuf[1024]; | |
3553 void *load_result; | |
3554 { | |
3555 ThreadToNativeFromVM ttnfvm(thread); | |
3556 load_result = hpi::dll_load(name, ebuf, sizeof ebuf); | |
3557 } | |
3558 if (load_result == NULL) { | |
3559 char msg[1024]; | |
3560 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
3561 // Since 'ebuf' may contain a string encoded using | |
3562 // platform encoding scheme, we need to pass | |
3563 // Exceptions::unsafe_to_utf8 to the new_exception method | |
3564 // as the last argument. See bug 6367357. | |
3565 Handle h_exception = | |
3566 Exceptions::new_exception(thread, | |
3567 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
3568 msg, Exceptions::unsafe_to_utf8); | |
3569 | |
3570 THROW_HANDLE_0(h_exception); | |
3571 } | |
3572 return load_result; | |
3573 JVM_END | |
3574 | |
3575 | |
3576 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
3577 JVMWrapper("JVM_UnloadLibrary"); | |
3578 hpi::dll_unload(handle); | |
3579 JVM_END | |
3580 | |
3581 | |
3582 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
3583 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
3584 return hpi::dll_lookup(handle, name); | |
3585 JVM_END | |
3586 | |
3587 // Floating point support //////////////////////////////////////////////////////////////////// | |
3588 | |
3589 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
3590 JVMWrapper("JVM_IsNaN"); | |
3591 return g_isnan(a); | |
3592 JVM_END | |
3593 | |
3594 | |
3595 | |
3596 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
3597 | |
3598 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
3599 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
3600 return Threads::is_supported_jni_version_including_1_1(version); | |
3601 JVM_END | |
3602 | |
3603 | |
3604 // String support /////////////////////////////////////////////////////////////////////////// | |
3605 | |
3606 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
3607 JVMWrapper("JVM_InternString"); | |
3608 JvmtiVMObjectAllocEventCollector oam; | |
3609 if (str == NULL) return NULL; | |
3610 oop string = JNIHandles::resolve_non_null(str); | |
3611 oop result = StringTable::intern(string, CHECK_NULL); | |
3612 return (jstring) JNIHandles::make_local(env, result); | |
3613 JVM_END | |
3614 | |
3615 | |
3616 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
3617 | |
3618 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
3619 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
3620 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
3621 // that only works with java threads. | |
3622 | |
3623 | |
3624 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
3625 VM_Exit::block_if_vm_exited(); | |
3626 JVMWrapper("JVM_RawMonitorCreate"); | |
3627 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
3628 } | |
3629 | |
3630 | |
3631 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
3632 VM_Exit::block_if_vm_exited(); | |
3633 JVMWrapper("JVM_RawMonitorDestroy"); | |
3634 delete ((Mutex*) mon); | |
3635 } | |
3636 | |
3637 | |
3638 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
3639 VM_Exit::block_if_vm_exited(); | |
3640 JVMWrapper("JVM_RawMonitorEnter"); | |
3641 ((Mutex*) mon)->jvm_raw_lock(); | |
3642 return 0; | |
3643 } | |
3644 | |
3645 | |
3646 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
3647 VM_Exit::block_if_vm_exited(); | |
3648 JVMWrapper("JVM_RawMonitorExit"); | |
3649 ((Mutex*) mon)->jvm_raw_unlock(); | |
3650 } | |
3651 | |
3652 | |
3653 // Support for Serialization | |
3654 | |
3655 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
3656 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
3657 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
3658 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
3659 | |
3660 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
3661 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
3662 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
3663 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
3664 | |
3665 | |
3666 void initialize_converter_functions() { | |
3667 if (JDK_Version::is_gte_jdk14x_version()) { | |
3668 // These functions only exist for compatibility with 1.3.1 and earlier | |
3669 return; | |
3670 } | |
3671 | |
3672 // called from universe_post_init() | |
3673 assert( | |
3674 int_bits_to_float_fn == NULL && | |
3675 long_bits_to_double_fn == NULL && | |
3676 float_to_int_bits_fn == NULL && | |
3677 double_to_long_bits_fn == NULL , | |
3678 "initialization done twice" | |
3679 ); | |
3680 // initialize | |
3681 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
3682 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
3683 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
3684 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
3685 // verify | |
3686 assert( | |
3687 int_bits_to_float_fn != NULL && | |
3688 long_bits_to_double_fn != NULL && | |
3689 float_to_int_bits_fn != NULL && | |
3690 double_to_long_bits_fn != NULL , | |
3691 "initialization failed" | |
3692 ); | |
3693 } | |
3694 | |
3695 | |
3696 // Serialization | |
3697 JVM_ENTRY(void, JVM_SetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
3698 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
3699 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
3700 | |
3701 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
3702 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
3703 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
3704 oop o = JNIHandles::resolve(obj); | |
3705 | |
3706 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
3707 THROW(vmSymbols::java_lang_NullPointerException()); | |
3708 } | |
3709 | |
3710 jsize nfids = fids->length(); | |
3711 if (nfids == 0) return; | |
3712 | |
3713 if (tcodes->length() < nfids) { | |
3714 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
3715 } | |
3716 | |
3717 jsize off = 0; | |
3718 /* loop through fields, setting values */ | |
3719 for (jsize i = 0; i < nfids; i++) { | |
3720 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
3721 int field_offset; | |
3722 if (fid != NULL) { | |
3723 // NULL is a legal value for fid, but retrieving the field offset | |
3724 // trigger assertion in that case | |
3725 field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
3726 } | |
3727 | |
3728 switch (tcodes->char_at(i)) { | |
3729 case 'Z': | |
3730 if (fid != NULL) { | |
3731 jboolean val = (dbuf->byte_at(off) != 0) ? JNI_TRUE : JNI_FALSE; | |
3732 o->bool_field_put(field_offset, val); | |
3733 } | |
3734 off++; | |
3735 break; | |
3736 | |
3737 case 'B': | |
3738 if (fid != NULL) { | |
3739 o->byte_field_put(field_offset, dbuf->byte_at(off)); | |
3740 } | |
3741 off++; | |
3742 break; | |
3743 | |
3744 case 'C': | |
3745 if (fid != NULL) { | |
3746 jchar val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
3747 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
3748 o->char_field_put(field_offset, val); | |
3749 } | |
3750 off += 2; | |
3751 break; | |
3752 | |
3753 case 'S': | |
3754 if (fid != NULL) { | |
3755 jshort val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
3756 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
3757 o->short_field_put(field_offset, val); | |
3758 } | |
3759 off += 2; | |
3760 break; | |
3761 | |
3762 case 'I': | |
3763 if (fid != NULL) { | |
3764 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
3765 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
3766 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
3767 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
3768 o->int_field_put(field_offset, ival); | |
3769 } | |
3770 off += 4; | |
3771 break; | |
3772 | |
3773 case 'F': | |
3774 if (fid != NULL) { | |
3775 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
3776 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
3777 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
3778 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
3779 jfloat fval = (*int_bits_to_float_fn)(env, NULL, ival); | |
3780 o->float_field_put(field_offset, fval); | |
3781 } | |
3782 off += 4; | |
3783 break; | |
3784 | |
3785 case 'J': | |
3786 if (fid != NULL) { | |
3787 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
3788 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
3789 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
3790 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
3791 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
3792 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
3793 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
3794 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
3795 o->long_field_put(field_offset, lval); | |
3796 } | |
3797 off += 8; | |
3798 break; | |
3799 | |
3800 case 'D': | |
3801 if (fid != NULL) { | |
3802 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
3803 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
3804 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
3805 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
3806 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
3807 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
3808 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
3809 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
3810 jdouble dval = (*long_bits_to_double_fn)(env, NULL, lval); | |
3811 o->double_field_put(field_offset, dval); | |
3812 } | |
3813 off += 8; | |
3814 break; | |
3815 | |
3816 default: | |
3817 // Illegal typecode | |
3818 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
3819 } | |
3820 } | |
3821 JVM_END | |
3822 | |
3823 | |
3824 JVM_ENTRY(void, JVM_GetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
3825 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
3826 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
3827 | |
3828 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
3829 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
3830 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
3831 oop o = JNIHandles::resolve(obj); | |
3832 | |
3833 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
3834 THROW(vmSymbols::java_lang_NullPointerException()); | |
3835 } | |
3836 | |
3837 jsize nfids = fids->length(); | |
3838 if (nfids == 0) return; | |
3839 | |
3840 if (tcodes->length() < nfids) { | |
3841 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
3842 } | |
3843 | |
3844 /* loop through fields, fetching values */ | |
3845 jsize off = 0; | |
3846 for (jsize i = 0; i < nfids; i++) { | |
3847 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
3848 if (fid == NULL) { | |
3849 THROW(vmSymbols::java_lang_NullPointerException()); | |
3850 } | |
3851 int field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
3852 | |
3853 switch (tcodes->char_at(i)) { | |
3854 case 'Z': | |
3855 { | |
3856 jboolean val = o->bool_field(field_offset); | |
3857 dbuf->byte_at_put(off++, (val != 0) ? 1 : 0); | |
3858 } | |
3859 break; | |
3860 | |
3861 case 'B': | |
3862 dbuf->byte_at_put(off++, o->byte_field(field_offset)); | |
3863 break; | |
3864 | |
3865 case 'C': | |
3866 { | |
3867 jchar val = o->char_field(field_offset); | |
3868 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
3869 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
3870 } | |
3871 break; | |
3872 | |
3873 case 'S': | |
3874 { | |
3875 jshort val = o->short_field(field_offset); | |
3876 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
3877 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
3878 } | |
3879 break; | |
3880 | |
3881 case 'I': | |
3882 { | |
3883 jint val = o->int_field(field_offset); | |
3884 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
3885 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
3886 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
3887 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
3888 } | |
3889 break; | |
3890 | |
3891 case 'F': | |
3892 { | |
3893 jfloat fval = o->float_field(field_offset); | |
3894 jint ival = (*float_to_int_bits_fn)(env, NULL, fval); | |
3895 dbuf->byte_at_put(off++, (ival >> 24) & 0xFF); | |
3896 dbuf->byte_at_put(off++, (ival >> 16) & 0xFF); | |
3897 dbuf->byte_at_put(off++, (ival >> 8) & 0xFF); | |
3898 dbuf->byte_at_put(off++, (ival >> 0) & 0xFF); | |
3899 } | |
3900 break; | |
3901 | |
3902 case 'J': | |
3903 { | |
3904 jlong val = o->long_field(field_offset); | |
3905 dbuf->byte_at_put(off++, (val >> 56) & 0xFF); | |
3906 dbuf->byte_at_put(off++, (val >> 48) & 0xFF); | |
3907 dbuf->byte_at_put(off++, (val >> 40) & 0xFF); | |
3908 dbuf->byte_at_put(off++, (val >> 32) & 0xFF); | |
3909 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
3910 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
3911 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
3912 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
3913 } | |
3914 break; | |
3915 | |
3916 case 'D': | |
3917 { | |
3918 jdouble dval = o->double_field(field_offset); | |
3919 jlong lval = (*double_to_long_bits_fn)(env, NULL, dval); | |
3920 dbuf->byte_at_put(off++, (lval >> 56) & 0xFF); | |
3921 dbuf->byte_at_put(off++, (lval >> 48) & 0xFF); | |
3922 dbuf->byte_at_put(off++, (lval >> 40) & 0xFF); | |
3923 dbuf->byte_at_put(off++, (lval >> 32) & 0xFF); | |
3924 dbuf->byte_at_put(off++, (lval >> 24) & 0xFF); | |
3925 dbuf->byte_at_put(off++, (lval >> 16) & 0xFF); | |
3926 dbuf->byte_at_put(off++, (lval >> 8) & 0xFF); | |
3927 dbuf->byte_at_put(off++, (lval >> 0) & 0xFF); | |
3928 } | |
3929 break; | |
3930 | |
3931 default: | |
3932 // Illegal typecode | |
3933 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
3934 } | |
3935 } | |
3936 JVM_END | |
3937 | |
3938 | |
3939 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
3940 | |
3941 jclass find_class_from_class_loader(JNIEnv* env, symbolHandle name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS) { | |
3942 // Security Note: | |
3943 // The Java level wrapper will perform the necessary security check allowing | |
3944 // us to pass the NULL as the initiating class loader. | |
3945 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
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parents:
875
diff
changeset
|
3946 |
0 | 3947 KlassHandle klass_handle(THREAD, klass); |
3948 // Check if we should initialize the class | |
3949 if (init && klass_handle->oop_is_instance()) { | |
3950 klass_handle->initialize(CHECK_NULL); | |
3951 } | |
3952 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
3953 } | |
3954 | |
3955 | |
3956 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
3957 | |
3958 #ifndef PRODUCT | |
3959 | |
3960 extern "C" { | |
3961 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
3962 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
3963 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
3964 } | |
3965 | |
3966 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
3967 JVMWrapper("JVM_AccessBoolVMFlag"); | |
3968 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, INTERNAL); | |
3969 JVM_END | |
3970 | |
3971 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
3972 JVMWrapper("JVM_AccessVMIntFlag"); | |
3973 intx v; | |
3974 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, INTERNAL); | |
3975 *value = (jint)v; | |
3976 return result; | |
3977 JVM_END | |
3978 | |
3979 | |
3980 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
3981 JVMWrapper("JVM_VMBreakPoint"); | |
3982 oop the_obj = JNIHandles::resolve(obj); | |
3983 BREAKPOINT; | |
3984 JVM_END | |
3985 | |
3986 | |
3987 #endif | |
3988 | |
3989 | |
3990 //--------------------------------------------------------------------------- | |
3991 // | |
3992 // Support for old native code-based reflection (pre-JDK 1.4) | |
3993 // Disabled by default in the product build. | |
3994 // | |
3995 // See reflection.hpp for information on SUPPORT_OLD_REFLECTION | |
3996 // | |
3997 //--------------------------------------------------------------------------- | |
3998 | |
3999 #ifdef SUPPORT_OLD_REFLECTION | |
4000 | |
4001 JVM_ENTRY(jobjectArray, JVM_GetClassFields(JNIEnv *env, jclass cls, jint which)) | |
4002 JVMWrapper("JVM_GetClassFields"); | |
4003 JvmtiVMObjectAllocEventCollector oam; | |
4004 oop mirror = JNIHandles::resolve_non_null(cls); | |
4005 objArrayOop result = Reflection::reflect_fields(mirror, which, CHECK_NULL); | |
4006 return (jobjectArray) JNIHandles::make_local(env, result); | |
4007 JVM_END | |
4008 | |
4009 | |
4010 JVM_ENTRY(jobjectArray, JVM_GetClassMethods(JNIEnv *env, jclass cls, jint which)) | |
4011 JVMWrapper("JVM_GetClassMethods"); | |
4012 JvmtiVMObjectAllocEventCollector oam; | |
4013 oop mirror = JNIHandles::resolve_non_null(cls); | |
4014 objArrayOop result = Reflection::reflect_methods(mirror, which, CHECK_NULL); | |
4015 //%note jvm_r4 | |
4016 return (jobjectArray) JNIHandles::make_local(env, result); | |
4017 JVM_END | |
4018 | |
4019 | |
4020 JVM_ENTRY(jobjectArray, JVM_GetClassConstructors(JNIEnv *env, jclass cls, jint which)) | |
4021 JVMWrapper("JVM_GetClassConstructors"); | |
4022 JvmtiVMObjectAllocEventCollector oam; | |
4023 oop mirror = JNIHandles::resolve_non_null(cls); | |
4024 objArrayOop result = Reflection::reflect_constructors(mirror, which, CHECK_NULL); | |
4025 //%note jvm_r4 | |
4026 return (jobjectArray) JNIHandles::make_local(env, result); | |
4027 JVM_END | |
4028 | |
4029 | |
4030 JVM_ENTRY(jobject, JVM_GetClassField(JNIEnv *env, jclass cls, jstring name, jint which)) | |
4031 JVMWrapper("JVM_GetClassField"); | |
4032 JvmtiVMObjectAllocEventCollector oam; | |
4033 if (name == NULL) return NULL; | |
4034 Handle str (THREAD, JNIHandles::resolve_non_null(name)); | |
4035 | |
4036 const char* cstr = java_lang_String::as_utf8_string(str()); | |
4037 symbolHandle field_name = | |
4038 symbolHandle(THREAD, SymbolTable::probe(cstr, (int)strlen(cstr))); | |
4039 if (field_name.is_null()) { | |
4040 THROW_0(vmSymbols::java_lang_NoSuchFieldException()); | |
4041 } | |
4042 | |
4043 oop mirror = JNIHandles::resolve_non_null(cls); | |
4044 oop result = Reflection::reflect_field(mirror, field_name(), which, CHECK_NULL); | |
4045 if (result == NULL) { | |
4046 THROW_0(vmSymbols::java_lang_NoSuchFieldException()); | |
4047 } | |
4048 return JNIHandles::make_local(env, result); | |
4049 JVM_END | |
4050 | |
4051 | |
4052 JVM_ENTRY(jobject, JVM_GetClassMethod(JNIEnv *env, jclass cls, jstring name, jobjectArray types, jint which)) | |
4053 JVMWrapper("JVM_GetClassMethod"); | |
4054 JvmtiVMObjectAllocEventCollector oam; | |
4055 if (name == NULL) { | |
4056 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
4057 } | |
4058 Handle str (THREAD, JNIHandles::resolve_non_null(name)); | |
4059 | |
4060 const char* cstr = java_lang_String::as_utf8_string(str()); | |
4061 symbolHandle method_name = | |
4062 symbolHandle(THREAD, SymbolTable::probe(cstr, (int)strlen(cstr))); | |
4063 if (method_name.is_null()) { | |
4064 THROW_0(vmSymbols::java_lang_NoSuchMethodException()); | |
4065 } | |
4066 | |
4067 oop mirror = JNIHandles::resolve_non_null(cls); | |
4068 objArrayHandle tarray (THREAD, objArrayOop(JNIHandles::resolve(types))); | |
4069 oop result = Reflection::reflect_method(mirror, method_name, tarray, | |
4070 which, CHECK_NULL); | |
4071 if (result == NULL) { | |
4072 THROW_0(vmSymbols::java_lang_NoSuchMethodException()); | |
4073 } | |
4074 return JNIHandles::make_local(env, result); | |
4075 JVM_END | |
4076 | |
4077 | |
4078 JVM_ENTRY(jobject, JVM_GetClassConstructor(JNIEnv *env, jclass cls, jobjectArray types, jint which)) | |
4079 JVMWrapper("JVM_GetClassConstructor"); | |
4080 JvmtiVMObjectAllocEventCollector oam; | |
4081 oop mirror = JNIHandles::resolve_non_null(cls); | |
4082 objArrayHandle tarray (THREAD, objArrayOop(JNIHandles::resolve(types))); | |
4083 oop result = Reflection::reflect_constructor(mirror, tarray, which, CHECK_NULL); | |
4084 if (result == NULL) { | |
4085 THROW_0(vmSymbols::java_lang_NoSuchMethodException()); | |
4086 } | |
4087 return (jobject) JNIHandles::make_local(env, result); | |
4088 JVM_END | |
4089 | |
4090 | |
4091 // Instantiation /////////////////////////////////////////////////////////////////////////////// | |
4092 | |
4093 JVM_ENTRY(jobject, JVM_NewInstance(JNIEnv *env, jclass cls)) | |
4094 JVMWrapper("JVM_NewInstance"); | |
4095 Handle mirror(THREAD, JNIHandles::resolve_non_null(cls)); | |
4096 | |
4097 methodOop resolved_constructor = java_lang_Class::resolved_constructor(mirror()); | |
4098 if (resolved_constructor == NULL) { | |
4099 klassOop k = java_lang_Class::as_klassOop(mirror()); | |
4100 // The java.lang.Class object caches a resolved constructor if all the checks | |
4101 // below were done successfully and a constructor was found. | |
4102 | |
4103 // Do class based checks | |
4104 if (java_lang_Class::is_primitive(mirror())) { | |
4105 const char* msg = ""; | |
4106 if (mirror == Universe::bool_mirror()) msg = "java/lang/Boolean"; | |
4107 else if (mirror == Universe::char_mirror()) msg = "java/lang/Character"; | |
4108 else if (mirror == Universe::float_mirror()) msg = "java/lang/Float"; | |
4109 else if (mirror == Universe::double_mirror()) msg = "java/lang/Double"; | |
4110 else if (mirror == Universe::byte_mirror()) msg = "java/lang/Byte"; | |
4111 else if (mirror == Universe::short_mirror()) msg = "java/lang/Short"; | |
4112 else if (mirror == Universe::int_mirror()) msg = "java/lang/Integer"; | |
4113 else if (mirror == Universe::long_mirror()) msg = "java/lang/Long"; | |
4114 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), msg); | |
4115 } | |
4116 | |
4117 // Check whether we are allowed to instantiate this class | |
4118 Klass::cast(k)->check_valid_for_instantiation(false, CHECK_NULL); // Array classes get caught here | |
4119 instanceKlassHandle klass(THREAD, k); | |
4120 // Make sure class is initialized (also so all methods are rewritten) | |
4121 klass->initialize(CHECK_NULL); | |
4122 | |
4123 // Lookup default constructor | |
4124 resolved_constructor = klass->find_method(vmSymbols::object_initializer_name(), vmSymbols::void_method_signature()); | |
4125 if (resolved_constructor == NULL) { | |
4126 ResourceMark rm(THREAD); | |
4127 THROW_MSG_0(vmSymbols::java_lang_InstantiationException(), klass->external_name()); | |
4128 } | |
4129 | |
4130 // Cache result in java.lang.Class object. Does not have to be MT safe. | |
4131 java_lang_Class::set_resolved_constructor(mirror(), resolved_constructor); | |
4132 } | |
4133 | |
4134 assert(resolved_constructor != NULL, "sanity check"); | |
4135 methodHandle constructor = methodHandle(THREAD, resolved_constructor); | |
4136 | |
4137 // We have an initialized instanceKlass with a default constructor | |
4138 instanceKlassHandle klass(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls))); | |
4139 assert(klass->is_initialized() || klass->is_being_initialized(), "sanity check"); | |
4140 | |
4141 // Do security check | |
4142 klassOop caller_klass = NULL; | |
4143 if (UsePrivilegedStack) { | |
4144 caller_klass = thread->security_get_caller_class(2); | |
4145 | |
4146 if (!Reflection::verify_class_access(caller_klass, klass(), false) || | |
4147 !Reflection::verify_field_access(caller_klass, | |
4148 klass(), | |
4149 klass(), | |
4150 constructor->access_flags(), | |
4151 false, | |
4152 true)) { | |
4153 ResourceMark rm(THREAD); | |
4154 THROW_MSG_0(vmSymbols::java_lang_IllegalAccessException(), klass->external_name()); | |
4155 } | |
4156 } | |
4157 | |
4158 // Allocate object and call constructor | |
4159 Handle receiver = klass->allocate_instance_handle(CHECK_NULL); | |
4160 JavaCalls::call_default_constructor(thread, constructor, receiver, CHECK_NULL); | |
4161 | |
4162 jobject res = JNIHandles::make_local(env, receiver()); | |
4163 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4164 JvmtiExport::post_vm_object_alloc(JavaThread::current(), receiver()); | |
4165 } | |
4166 return res; | |
4167 JVM_END | |
4168 | |
4169 | |
4170 // Field //////////////////////////////////////////////////////////////////////////////////////////// | |
4171 | |
4172 JVM_ENTRY(jobject, JVM_GetField(JNIEnv *env, jobject field, jobject obj)) | |
4173 JVMWrapper("JVM_GetField"); | |
4174 JvmtiVMObjectAllocEventCollector oam; | |
4175 Handle field_mirror(thread, JNIHandles::resolve(field)); | |
4176 Handle receiver (thread, JNIHandles::resolve(obj)); | |
4177 fieldDescriptor fd; | |
4178 Reflection::resolve_field(field_mirror, receiver, &fd, false, CHECK_NULL); | |
4179 jvalue value; | |
4180 BasicType type = Reflection::field_get(&value, &fd, receiver); | |
4181 oop box = Reflection::box(&value, type, CHECK_NULL); | |
4182 return JNIHandles::make_local(env, box); | |
4183 JVM_END | |
4184 | |
4185 | |
4186 JVM_ENTRY(jvalue, JVM_GetPrimitiveField(JNIEnv *env, jobject field, jobject obj, unsigned char wCode)) | |
4187 JVMWrapper("JVM_GetPrimitiveField"); | |
4188 Handle field_mirror(thread, JNIHandles::resolve(field)); | |
4189 Handle receiver (thread, JNIHandles::resolve(obj)); | |
4190 fieldDescriptor fd; | |
4191 jvalue value; | |
4192 value.j = 0; | |
4193 Reflection::resolve_field(field_mirror, receiver, &fd, false, CHECK_(value)); | |
4194 BasicType type = Reflection::field_get(&value, &fd, receiver); | |
4195 BasicType wide_type = (BasicType) wCode; | |
4196 if (type != wide_type) { | |
4197 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
4198 } | |
4199 return value; | |
4200 JVM_END // should really be JVM_END, but that doesn't work for union types! | |
4201 | |
4202 | |
4203 JVM_ENTRY(void, JVM_SetField(JNIEnv *env, jobject field, jobject obj, jobject val)) | |
4204 JVMWrapper("JVM_SetField"); | |
4205 Handle field_mirror(thread, JNIHandles::resolve(field)); | |
4206 Handle receiver (thread, JNIHandles::resolve(obj)); | |
4207 oop box = JNIHandles::resolve(val); | |
4208 fieldDescriptor fd; | |
4209 Reflection::resolve_field(field_mirror, receiver, &fd, true, CHECK); | |
4210 BasicType field_type = fd.field_type(); | |
4211 jvalue value; | |
4212 BasicType value_type; | |
4213 if (field_type == T_OBJECT || field_type == T_ARRAY) { | |
4214 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
4215 value_type = Reflection::unbox_for_regular_object(box, &value); | |
4216 Reflection::field_set(&value, &fd, receiver, field_type, CHECK); | |
4217 } else { | |
4218 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
4219 Reflection::field_set(&value, &fd, receiver, value_type, CHECK); | |
4220 } | |
4221 JVM_END | |
4222 | |
4223 | |
4224 JVM_ENTRY(void, JVM_SetPrimitiveField(JNIEnv *env, jobject field, jobject obj, jvalue v, unsigned char vCode)) | |
4225 JVMWrapper("JVM_SetPrimitiveField"); | |
4226 Handle field_mirror(thread, JNIHandles::resolve(field)); | |
4227 Handle receiver (thread, JNIHandles::resolve(obj)); | |
4228 fieldDescriptor fd; | |
4229 Reflection::resolve_field(field_mirror, receiver, &fd, true, CHECK); | |
4230 BasicType value_type = (BasicType) vCode; | |
4231 Reflection::field_set(&v, &fd, receiver, value_type, CHECK); | |
4232 JVM_END | |
4233 | |
4234 | |
4235 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
4236 | |
4237 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
4238 JVMWrapper("JVM_InvokeMethod"); | |
4239 Handle method_handle; | |
4240 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
4241 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
4242 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
4243 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4244 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
4245 jobject res = JNIHandles::make_local(env, result); | |
4246 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4247 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
4248 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
4249 if (java_lang_Class::is_primitive(ret_type)) { | |
4250 // Only for primitive type vm allocates memory for java object. | |
4251 // See box() method. | |
4252 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4253 } | |
4254 } | |
4255 return res; | |
4256 } else { | |
4257 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
4258 } | |
4259 JVM_END | |
4260 | |
4261 | |
4262 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
4263 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
4264 oop constructor_mirror = JNIHandles::resolve(c); | |
4265 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4266 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
4267 jobject res = JNIHandles::make_local(env, result); | |
4268 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4269 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4270 } | |
4271 return res; | |
4272 JVM_END | |
4273 | |
4274 #endif /* SUPPORT_OLD_REFLECTION */ | |
4275 | |
4276 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
4277 | |
4278 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
4279 JVMWrapper("JVM_SupportsCX8"); | |
4280 return VM_Version::supports_cx8(); | |
4281 JVM_END | |
4282 | |
4283 | |
4284 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
4285 JVMWrapper("JVM_CX8Field"); | |
4286 jlong res; | |
4287 oop o = JNIHandles::resolve(obj); | |
4288 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
4289 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
4290 | |
4291 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
4292 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
4293 | |
4294 return res == oldVal; | |
4295 JVM_END | |
4296 | |
116
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6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
4297 // DTrace /////////////////////////////////////////////////////////////////// |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4298 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4299 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
|
4300 JVMWrapper("JVM_DTraceGetVersion"); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4301 return (jint)JVM_TRACING_DTRACE_VERSION; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4302 JVM_END |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4303 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4304 JVM_ENTRY(jlong,JVM_DTraceActivate( |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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parents:
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diff
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4305 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
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4306 JVM_DTraceProvider* providers)) |
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4307 JVMWrapper("JVM_DTraceActivate"); |
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4308 return DTraceJSDT::activate( |
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4309 version, module_name, providers_count, providers, CHECK_0); |
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4310 JVM_END |
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4311 |
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4312 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
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4313 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
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4314 return DTraceJSDT::is_probe_enabled(method); |
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4315 JVM_END |
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4316 |
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4317 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
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4318 JVMWrapper("JVM_DTraceDispose"); |
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4319 DTraceJSDT::dispose(handle); |
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4320 JVM_END |
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4321 |
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4322 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
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4323 JVMWrapper("JVM_DTraceIsSupported"); |
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4324 return DTraceJSDT::is_supported(); |
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4325 JVM_END |
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4326 |
0 | 4327 // Returns an array of all live Thread objects (VM internal JavaThreads, |
4328 // jvmti agent threads, and JNI attaching threads are skipped) | |
4329 // See CR 6404306 regarding JNI attaching threads | |
4330 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
4331 ResourceMark rm(THREAD); | |
4332 ThreadsListEnumerator tle(THREAD, false, false); | |
4333 JvmtiVMObjectAllocEventCollector oam; | |
4334 | |
4335 int num_threads = tle.num_threads(); | |
1142 | 4336 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
0 | 4337 objArrayHandle threads_ah(THREAD, r); |
4338 | |
4339 for (int i = 0; i < num_threads; i++) { | |
4340 Handle h = tle.get_threadObj(i); | |
4341 threads_ah->obj_at_put(i, h()); | |
4342 } | |
4343 | |
4344 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
4345 JVM_END | |
4346 | |
4347 | |
4348 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
4349 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
4350 // the corresponding entry in the given threads array | |
4351 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
4352 JVMWrapper("JVM_DumpThreads"); | |
4353 JvmtiVMObjectAllocEventCollector oam; | |
4354 | |
4355 // Check if threads is null | |
4356 if (threads == NULL) { | |
4357 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4358 } | |
4359 | |
4360 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
4361 objArrayHandle ah(THREAD, a); | |
4362 int num_threads = ah->length(); | |
4363 // check if threads is non-empty array | |
4364 if (num_threads == 0) { | |
4365 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
4366 } | |
4367 | |
4368 // check if threads is not an array of objects of Thread class | |
4369 klassOop k = objArrayKlass::cast(ah->klass())->element_klass(); | |
1142 | 4370 if (k != SystemDictionary::Thread_klass()) { |
0 | 4371 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
4372 } | |
4373 | |
4374 ResourceMark rm(THREAD); | |
4375 | |
4376 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
4377 for (int i = 0; i < num_threads; i++) { | |
4378 oop thread_obj = ah->obj_at(i); | |
4379 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
4380 thread_handle_array->append(h); | |
4381 } | |
4382 | |
4383 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
4384 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
4385 | |
4386 JVM_END | |
4387 | |
4388 // JVM monitoring and management support | |
4389 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
4390 return Management::get_jmm_interface(version); | |
4391 JVM_END | |
4392 | |
4393 // com.sun.tools.attach.VirtualMachine agent properties support | |
4394 // | |
4395 // Initialize the agent properties with the properties maintained in the VM | |
4396 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
4397 JVMWrapper("JVM_InitAgentProperties"); | |
4398 ResourceMark rm; | |
4399 | |
4400 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
4401 | |
4402 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
4403 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
4404 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
4405 return properties; | |
4406 JVM_END | |
4407 | |
4408 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
4409 { | |
4410 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
4411 JvmtiVMObjectAllocEventCollector oam; | |
4412 | |
4413 if (ofClass == NULL) { | |
4414 return NULL; | |
4415 } | |
4416 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
4417 // Special handling for primitive objects | |
4418 if (java_lang_Class::is_primitive(mirror())) { | |
4419 return NULL; | |
4420 } | |
4421 klassOop k = java_lang_Class::as_klassOop(mirror()); | |
4422 if (!Klass::cast(k)->oop_is_instance()) { | |
4423 return NULL; | |
4424 } | |
4425 instanceKlassHandle ik_h(THREAD, k); | |
4426 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
4427 if (encl_method_class_idx == 0) { | |
4428 return NULL; | |
4429 } | |
1142 | 4430 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
0 | 4431 objArrayHandle dest(THREAD, dest_o); |
4432 klassOop enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); | |
4433 dest->obj_at_put(0, Klass::cast(enc_k)->java_mirror()); | |
4434 int encl_method_method_idx = ik_h->enclosing_method_method_index(); | |
4435 if (encl_method_method_idx != 0) { | |
4436 symbolOop sym_o = ik_h->constants()->symbol_at( | |
4437 extract_low_short_from_int( | |
4438 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4439 symbolHandle sym(THREAD, sym_o); | |
4440 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4441 dest->obj_at_put(1, str()); | |
4442 sym_o = ik_h->constants()->symbol_at( | |
4443 extract_high_short_from_int( | |
4444 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4445 sym = symbolHandle(THREAD, sym_o); | |
4446 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4447 dest->obj_at_put(2, str()); | |
4448 } | |
4449 return (jobjectArray) JNIHandles::make_local(dest()); | |
4450 } | |
4451 JVM_END | |
4452 | |
4453 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
4454 jint javaThreadState)) | |
4455 { | |
4456 // If new thread states are added in future JDK and VM versions, | |
4457 // this should check if the JDK version is compatible with thread | |
4458 // states supported by the VM. Return NULL if not compatible. | |
4459 // | |
4460 // This function must map the VM java_lang_Thread::ThreadStatus | |
4461 // to the Java thread state that the JDK supports. | |
4462 // | |
4463 | |
4464 typeArrayHandle values_h; | |
4465 switch (javaThreadState) { | |
4466 case JAVA_THREAD_STATE_NEW : { | |
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::NEW); | |
4470 break; | |
4471 } | |
4472 case JAVA_THREAD_STATE_RUNNABLE : { | |
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::RUNNABLE); | |
4476 break; | |
4477 } | |
4478 case JAVA_THREAD_STATE_BLOCKED : { | |
4479 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4480 values_h = typeArrayHandle(THREAD, r); | |
4481 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
4482 break; | |
4483 } | |
4484 case JAVA_THREAD_STATE_WAITING : { | |
4485 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
4486 values_h = typeArrayHandle(THREAD, r); | |
4487 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
4488 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
4489 break; | |
4490 } | |
4491 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4492 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
4493 values_h = typeArrayHandle(THREAD, r); | |
4494 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
4495 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
4496 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
4497 break; | |
4498 } | |
4499 case JAVA_THREAD_STATE_TERMINATED : { | |
4500 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4501 values_h = typeArrayHandle(THREAD, r); | |
4502 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
4503 break; | |
4504 } | |
4505 default: | |
4506 // Unknown state - probably incompatible JDK version | |
4507 return NULL; | |
4508 } | |
4509 | |
4510 return (jintArray) JNIHandles::make_local(env, values_h()); | |
4511 } | |
4512 JVM_END | |
4513 | |
4514 | |
4515 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
4516 jint javaThreadState, | |
4517 jintArray values)) | |
4518 { | |
4519 // If new thread states are added in future JDK and VM versions, | |
4520 // this should check if the JDK version is compatible with thread | |
4521 // states supported by the VM. Return NULL if not compatible. | |
4522 // | |
4523 // This function must map the VM java_lang_Thread::ThreadStatus | |
4524 // to the Java thread state that the JDK supports. | |
4525 // | |
4526 | |
4527 ResourceMark rm; | |
4528 | |
4529 // Check if threads is null | |
4530 if (values == NULL) { | |
4531 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4532 } | |
4533 | |
4534 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
4535 typeArrayHandle values_h(THREAD, v); | |
4536 | |
4537 objArrayHandle names_h; | |
4538 switch (javaThreadState) { | |
4539 case JAVA_THREAD_STATE_NEW : { | |
4540 assert(values_h->length() == 1 && | |
4541 values_h->int_at(0) == java_lang_Thread::NEW, | |
4542 "Invalid threadStatus value"); | |
4543 | |
1142 | 4544 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4545 1, /* only 1 substate */ |
4546 CHECK_NULL); | |
4547 names_h = objArrayHandle(THREAD, r); | |
4548 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
4549 names_h->obj_at_put(0, name()); | |
4550 break; | |
4551 } | |
4552 case JAVA_THREAD_STATE_RUNNABLE : { | |
4553 assert(values_h->length() == 1 && | |
4554 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
4555 "Invalid threadStatus value"); | |
4556 | |
1142 | 4557 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4558 1, /* only 1 substate */ |
4559 CHECK_NULL); | |
4560 names_h = objArrayHandle(THREAD, r); | |
4561 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
4562 names_h->obj_at_put(0, name()); | |
4563 break; | |
4564 } | |
4565 case JAVA_THREAD_STATE_BLOCKED : { | |
4566 assert(values_h->length() == 1 && | |
4567 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
4568 "Invalid threadStatus value"); | |
4569 | |
1142 | 4570 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4571 1, /* only 1 substate */ |
4572 CHECK_NULL); | |
4573 names_h = objArrayHandle(THREAD, r); | |
4574 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
4575 names_h->obj_at_put(0, name()); | |
4576 break; | |
4577 } | |
4578 case JAVA_THREAD_STATE_WAITING : { | |
4579 assert(values_h->length() == 2 && | |
4580 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
4581 values_h->int_at(1) == java_lang_Thread::PARKED, | |
4582 "Invalid threadStatus value"); | |
1142 | 4583 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4584 2, /* number of substates */ |
4585 CHECK_NULL); | |
4586 names_h = objArrayHandle(THREAD, r); | |
4587 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
4588 CHECK_NULL); | |
4589 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
4590 CHECK_NULL); | |
4591 names_h->obj_at_put(0, name0()); | |
4592 names_h->obj_at_put(1, name1()); | |
4593 break; | |
4594 } | |
4595 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4596 assert(values_h->length() == 3 && | |
4597 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
4598 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
4599 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
4600 "Invalid threadStatus value"); | |
1142 | 4601 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4602 3, /* number of substates */ |
4603 CHECK_NULL); | |
4604 names_h = objArrayHandle(THREAD, r); | |
4605 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
4606 CHECK_NULL); | |
4607 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
4608 CHECK_NULL); | |
4609 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
4610 CHECK_NULL); | |
4611 names_h->obj_at_put(0, name0()); | |
4612 names_h->obj_at_put(1, name1()); | |
4613 names_h->obj_at_put(2, name2()); | |
4614 break; | |
4615 } | |
4616 case JAVA_THREAD_STATE_TERMINATED : { | |
4617 assert(values_h->length() == 1 && | |
4618 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
4619 "Invalid threadStatus value"); | |
1142 | 4620 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4621 1, /* only 1 substate */ |
4622 CHECK_NULL); | |
4623 names_h = objArrayHandle(THREAD, r); | |
4624 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
4625 names_h->obj_at_put(0, name()); | |
4626 break; | |
4627 } | |
4628 default: | |
4629 // Unknown state - probably incompatible JDK version | |
4630 return NULL; | |
4631 } | |
4632 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
4633 } | |
4634 JVM_END | |
4635 | |
4636 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
4637 { | |
4638 memset(info, 0, sizeof(info_size)); | |
4639 | |
4640 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
4641 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
4642 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
4643 | |
4644 // when we add a new capability in the jvm_version_info struct, we should also | |
4645 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
4646 // counter defined in runtimeService.cpp. | |
4647 info->is_attachable = AttachListener::is_attach_supported(); | |
4648 #ifdef KERNEL | |
4649 info->is_kernel_jvm = 1; // true; | |
4650 #else // KERNEL | |
4651 info->is_kernel_jvm = 0; // false; | |
4652 #endif // KERNEL | |
4653 } | |
4654 JVM_END |