Mercurial > hg > truffle
annotate src/share/vm/prims/jvm.cpp @ 3939:f6f3bb0ee072
7088955: add C2 IR support to the SA
Reviewed-by: kvn
author | never |
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date | Sun, 11 Sep 2011 14:48:24 -0700 |
parents | e6b1331a51d2 |
children | f08d439fab8c |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/classLoader.hpp" | |
27 #include "classfile/javaAssertions.hpp" | |
28 #include "classfile/javaClasses.hpp" | |
29 #include "classfile/symbolTable.hpp" | |
30 #include "classfile/systemDictionary.hpp" | |
31 #include "classfile/vmSymbols.hpp" | |
32 #include "gc_interface/collectedHeap.inline.hpp" | |
33 #include "memory/oopFactory.hpp" | |
34 #include "memory/universe.inline.hpp" | |
3938 | 35 #include "oops/fieldStreams.hpp" |
1972 | 36 #include "oops/instanceKlass.hpp" |
37 #include "oops/objArrayKlass.hpp" | |
38 #include "prims/jvm.h" | |
39 #include "prims/jvm_misc.hpp" | |
40 #include "prims/jvmtiExport.hpp" | |
41 #include "prims/jvmtiThreadState.hpp" | |
42 #include "prims/nativeLookup.hpp" | |
43 #include "prims/privilegedStack.hpp" | |
44 #include "runtime/arguments.hpp" | |
45 #include "runtime/dtraceJSDT.hpp" | |
46 #include "runtime/handles.inline.hpp" | |
47 #include "runtime/init.hpp" | |
48 #include "runtime/interfaceSupport.hpp" | |
49 #include "runtime/java.hpp" | |
50 #include "runtime/javaCalls.hpp" | |
51 #include "runtime/jfieldIDWorkaround.hpp" | |
52 #include "runtime/os.hpp" | |
53 #include "runtime/perfData.hpp" | |
54 #include "runtime/reflection.hpp" | |
55 #include "runtime/vframe.hpp" | |
56 #include "runtime/vm_operations.hpp" | |
57 #include "services/attachListener.hpp" | |
58 #include "services/management.hpp" | |
59 #include "services/threadService.hpp" | |
60 #include "utilities/copy.hpp" | |
61 #include "utilities/defaultStream.hpp" | |
62 #include "utilities/dtrace.hpp" | |
63 #include "utilities/events.hpp" | |
64 #include "utilities/histogram.hpp" | |
65 #include "utilities/top.hpp" | |
66 #include "utilities/utf8.hpp" | |
67 #ifdef TARGET_OS_FAMILY_linux | |
68 # include "jvm_linux.h" | |
69 #endif | |
70 #ifdef TARGET_OS_FAMILY_solaris | |
71 # include "jvm_solaris.h" | |
72 #endif | |
73 #ifdef TARGET_OS_FAMILY_windows | |
74 # include "jvm_windows.h" | |
75 #endif | |
76 | |
0 | 77 #include <errno.h> |
78 | |
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79 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__begin, long long); |
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80 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__end, int); |
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81 HS_DTRACE_PROBE_DECL0(hotspot, thread__yield); |
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82 |
0 | 83 /* |
84 NOTE about use of any ctor or function call that can trigger a safepoint/GC: | |
85 such ctors and calls MUST NOT come between an oop declaration/init and its | |
86 usage because if objects are move this may cause various memory stomps, bus | |
87 errors and segfaults. Here is a cookbook for causing so called "naked oop | |
88 failures": | |
89 | |
90 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> { | |
91 JVMWrapper("JVM_GetClassDeclaredFields"); | |
92 | |
93 // Object address to be held directly in mirror & not visible to GC | |
94 oop mirror = JNIHandles::resolve_non_null(ofClass); | |
95 | |
96 // If this ctor can hit a safepoint, moving objects around, then | |
97 ComplexConstructor foo; | |
98 | |
99 // Boom! mirror may point to JUNK instead of the intended object | |
100 (some dereference of mirror) | |
101 | |
102 // Here's another call that may block for GC, making mirror stale | |
103 MutexLocker ml(some_lock); | |
104 | |
105 // And here's an initializer that can result in a stale oop | |
106 // all in one step. | |
107 oop o = call_that_can_throw_exception(TRAPS); | |
108 | |
109 | |
110 The solution is to keep the oop declaration BELOW the ctor or function | |
111 call that might cause a GC, do another resolve to reassign the oop, or | |
112 consider use of a Handle instead of an oop so there is immunity from object | |
113 motion. But note that the "QUICK" entries below do not have a handlemark | |
114 and thus can only support use of handles passed in. | |
115 */ | |
116 | |
117 static void trace_class_resolution_impl(klassOop to_class, TRAPS) { | |
118 ResourceMark rm; | |
119 int line_number = -1; | |
120 const char * source_file = NULL; | |
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121 const char * trace = "explicit"; |
0 | 122 klassOop caller = NULL; |
123 JavaThread* jthread = JavaThread::current(); | |
124 if (jthread->has_last_Java_frame()) { | |
125 vframeStream vfst(jthread); | |
126 | |
127 // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames | |
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128 TempNewSymbol access_controller = SymbolTable::new_symbol("java/security/AccessController", CHECK); |
0 | 129 klassOop access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); |
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130 TempNewSymbol privileged_action = SymbolTable::new_symbol("java/security/PrivilegedAction", CHECK); |
0 | 131 klassOop privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); |
132 | |
133 methodOop last_caller = NULL; | |
134 | |
135 while (!vfst.at_end()) { | |
136 methodOop m = vfst.method(); | |
1142 | 137 if (!vfst.method()->method_holder()->klass_part()->is_subclass_of(SystemDictionary::ClassLoader_klass())&& |
0 | 138 !vfst.method()->method_holder()->klass_part()->is_subclass_of(access_controller_klass) && |
139 !vfst.method()->method_holder()->klass_part()->is_subclass_of(privileged_action_klass)) { | |
140 break; | |
141 } | |
142 last_caller = m; | |
143 vfst.next(); | |
144 } | |
145 // if this is called from Class.forName0 and that is called from Class.forName, | |
146 // then print the caller of Class.forName. If this is Class.loadClass, then print | |
147 // that caller, otherwise keep quiet since this should be picked up elsewhere. | |
148 bool found_it = false; | |
149 if (!vfst.at_end() && | |
150 instanceKlass::cast(vfst.method()->method_holder())->name() == vmSymbols::java_lang_Class() && | |
151 vfst.method()->name() == vmSymbols::forName0_name()) { | |
152 vfst.next(); | |
153 if (!vfst.at_end() && | |
154 instanceKlass::cast(vfst.method()->method_holder())->name() == vmSymbols::java_lang_Class() && | |
155 vfst.method()->name() == vmSymbols::forName_name()) { | |
156 vfst.next(); | |
157 found_it = true; | |
158 } | |
159 } else if (last_caller != NULL && | |
160 instanceKlass::cast(last_caller->method_holder())->name() == | |
161 vmSymbols::java_lang_ClassLoader() && | |
162 (last_caller->name() == vmSymbols::loadClassInternal_name() || | |
163 last_caller->name() == vmSymbols::loadClass_name())) { | |
164 found_it = true; | |
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165 } else if (!vfst.at_end()) { |
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166 if (vfst.method()->is_native()) { |
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167 // JNI call |
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168 found_it = true; |
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169 } |
0 | 170 } |
171 if (found_it && !vfst.at_end()) { | |
172 // found the caller | |
173 caller = vfst.method()->method_holder(); | |
174 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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175 if (line_number == -1) { |
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176 // show method name if it's a native method |
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177 trace = vfst.method()->name_and_sig_as_C_string(); |
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178 } |
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179 Symbol* s = instanceKlass::cast(caller)->source_file_name(); |
0 | 180 if (s != NULL) { |
181 source_file = s->as_C_string(); | |
182 } | |
183 } | |
184 } | |
185 if (caller != NULL) { | |
186 if (to_class != caller) { | |
187 const char * from = Klass::cast(caller)->external_name(); | |
188 const char * to = Klass::cast(to_class)->external_name(); | |
189 // print in a single call to reduce interleaving between threads | |
190 if (source_file != NULL) { | |
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191 tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace); |
0 | 192 } else { |
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193 tty->print("RESOLVE %s %s (%s)\n", from, to, trace); |
0 | 194 } |
195 } | |
196 } | |
197 } | |
198 | |
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199 void trace_class_resolution(klassOop to_class) { |
0 | 200 EXCEPTION_MARK; |
201 trace_class_resolution_impl(to_class, THREAD); | |
202 if (HAS_PENDING_EXCEPTION) { | |
203 CLEAR_PENDING_EXCEPTION; | |
204 } | |
205 } | |
206 | |
207 // Wrapper to trace JVM functions | |
208 | |
209 #ifdef ASSERT | |
210 class JVMTraceWrapper : public StackObj { | |
211 public: | |
212 JVMTraceWrapper(const char* format, ...) { | |
213 if (TraceJVMCalls) { | |
214 va_list ap; | |
215 va_start(ap, format); | |
216 tty->print("JVM "); | |
217 tty->vprint_cr(format, ap); | |
218 va_end(ap); | |
219 } | |
220 } | |
221 }; | |
222 | |
223 Histogram* JVMHistogram; | |
224 volatile jint JVMHistogram_lock = 0; | |
225 | |
226 class JVMHistogramElement : public HistogramElement { | |
227 public: | |
228 JVMHistogramElement(const char* name); | |
229 }; | |
230 | |
231 JVMHistogramElement::JVMHistogramElement(const char* elementName) { | |
232 _name = elementName; | |
233 uintx count = 0; | |
234 | |
235 while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) { | |
236 while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) { | |
237 count +=1; | |
238 if ( (WarnOnStalledSpinLock > 0) | |
239 && (count % WarnOnStalledSpinLock == 0)) { | |
240 warning("JVMHistogram_lock seems to be stalled"); | |
241 } | |
242 } | |
243 } | |
244 | |
245 if(JVMHistogram == NULL) | |
246 JVMHistogram = new Histogram("JVM Call Counts",100); | |
247 | |
248 JVMHistogram->add_element(this); | |
249 Atomic::dec(&JVMHistogram_lock); | |
250 } | |
251 | |
252 #define JVMCountWrapper(arg) \ | |
253 static JVMHistogramElement* e = new JVMHistogramElement(arg); \ | |
254 if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen! | |
255 | |
256 #define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) | |
257 #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) | |
258 #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) | |
259 #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) | |
260 #else | |
261 #define JVMWrapper(arg1) | |
262 #define JVMWrapper2(arg1, arg2) | |
263 #define JVMWrapper3(arg1, arg2, arg3) | |
264 #define JVMWrapper4(arg1, arg2, arg3, arg4) | |
265 #endif | |
266 | |
267 | |
268 // Interface version ///////////////////////////////////////////////////////////////////// | |
269 | |
270 | |
271 JVM_LEAF(jint, JVM_GetInterfaceVersion()) | |
272 return JVM_INTERFACE_VERSION; | |
273 JVM_END | |
274 | |
275 | |
276 // java.lang.System ////////////////////////////////////////////////////////////////////// | |
277 | |
278 | |
279 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored)) | |
280 JVMWrapper("JVM_CurrentTimeMillis"); | |
281 return os::javaTimeMillis(); | |
282 JVM_END | |
283 | |
284 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored)) | |
285 JVMWrapper("JVM_NanoTime"); | |
286 return os::javaTimeNanos(); | |
287 JVM_END | |
288 | |
289 | |
290 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, | |
291 jobject dst, jint dst_pos, jint length)) | |
292 JVMWrapper("JVM_ArrayCopy"); | |
293 // Check if we have null pointers | |
294 if (src == NULL || dst == NULL) { | |
295 THROW(vmSymbols::java_lang_NullPointerException()); | |
296 } | |
297 arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); | |
298 arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); | |
299 assert(s->is_oop(), "JVM_ArrayCopy: src not an oop"); | |
300 assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); | |
301 // Do copy | |
302 Klass::cast(s->klass())->copy_array(s, src_pos, d, dst_pos, length, thread); | |
303 JVM_END | |
304 | |
305 | |
306 static void set_property(Handle props, const char* key, const char* value, TRAPS) { | |
307 JavaValue r(T_OBJECT); | |
308 // public synchronized Object put(Object key, Object value); | |
309 HandleMark hm(THREAD); | |
310 Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK); | |
311 Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK); | |
312 JavaCalls::call_virtual(&r, | |
313 props, | |
1142 | 314 KlassHandle(THREAD, SystemDictionary::Properties_klass()), |
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315 vmSymbols::put_name(), |
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316 vmSymbols::object_object_object_signature(), |
0 | 317 key_str, |
318 value_str, | |
319 THREAD); | |
320 } | |
321 | |
322 | |
323 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties)); | |
324 | |
325 | |
326 JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties)) | |
327 JVMWrapper("JVM_InitProperties"); | |
328 ResourceMark rm; | |
329 | |
330 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
331 | |
332 // System property list includes both user set via -D option and | |
333 // jvm system specific properties. | |
334 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
335 PUTPROP(props, p->key(), p->value()); | |
336 } | |
337 | |
338 // Convert the -XX:MaxDirectMemorySize= command line flag | |
339 // to the sun.nio.MaxDirectMemorySize property. | |
340 // Do this after setting user properties to prevent people | |
341 // from setting the value with a -D option, as requested. | |
342 { | |
343 char as_chars[256]; | |
344 jio_snprintf(as_chars, sizeof(as_chars), INTX_FORMAT, MaxDirectMemorySize); | |
345 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); | |
346 } | |
347 | |
348 // JVM monitoring and management support | |
349 // Add the sun.management.compiler property for the compiler's name | |
350 { | |
351 #undef CSIZE | |
352 #if defined(_LP64) || defined(_WIN64) | |
353 #define CSIZE "64-Bit " | |
354 #else | |
355 #define CSIZE | |
356 #endif // 64bit | |
357 | |
358 #ifdef TIERED | |
359 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; | |
360 #else | |
361 #if defined(COMPILER1) | |
362 const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; | |
363 #elif defined(COMPILER2) | |
364 const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; | |
365 #else | |
366 const char* compiler_name = ""; | |
367 #endif // compilers | |
368 #endif // TIERED | |
369 | |
370 if (*compiler_name != '\0' && | |
371 (Arguments::mode() != Arguments::_int)) { | |
372 PUTPROP(props, "sun.management.compiler", compiler_name); | |
373 } | |
374 } | |
375 | |
376 return properties; | |
377 JVM_END | |
378 | |
379 | |
380 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// | |
381 | |
382 extern volatile jint vm_created; | |
383 | |
384 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
385 if (vm_created != 0 && (code == 0)) { | |
386 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
387 Universe::run_finalizers_on_exit(); | |
388 } | |
389 before_exit(thread); | |
390 vm_exit(code); | |
391 JVM_END | |
392 | |
393 | |
394 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
395 before_exit(thread); | |
396 vm_exit(code); | |
397 JVM_END | |
398 | |
399 | |
400 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
401 register_on_exit_function(func); | |
402 JVM_END | |
403 | |
404 | |
405 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
406 JVMWrapper("JVM_GC"); | |
407 if (!DisableExplicitGC) { | |
408 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
409 } | |
410 JVM_END | |
411 | |
412 | |
413 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
414 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
415 return Universe::heap()->millis_since_last_gc(); | |
416 JVM_END | |
417 | |
418 | |
419 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
420 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
421 JVM_END | |
422 | |
423 | |
424 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
425 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
426 JVM_END | |
427 | |
428 static inline jlong convert_size_t_to_jlong(size_t val) { | |
429 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
430 NOT_LP64 (return (jlong)val;) | |
431 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
432 } | |
433 | |
434 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
435 JVMWrapper("JVM_TotalMemory"); | |
436 size_t n = Universe::heap()->capacity(); | |
437 return convert_size_t_to_jlong(n); | |
438 JVM_END | |
439 | |
440 | |
441 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
442 JVMWrapper("JVM_FreeMemory"); | |
443 CollectedHeap* ch = Universe::heap(); | |
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444 size_t n; |
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445 { |
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446 MutexLocker x(Heap_lock); |
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447 n = ch->capacity() - ch->used(); |
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448 } |
0 | 449 return convert_size_t_to_jlong(n); |
450 JVM_END | |
451 | |
452 | |
453 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
454 JVMWrapper("JVM_MaxMemory"); | |
455 size_t n = Universe::heap()->max_capacity(); | |
456 return convert_size_t_to_jlong(n); | |
457 JVM_END | |
458 | |
459 | |
460 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
461 JVMWrapper("JVM_ActiveProcessorCount"); | |
462 return os::active_processor_count(); | |
463 JVM_END | |
464 | |
465 | |
466 | |
467 // java.lang.Throwable ////////////////////////////////////////////////////// | |
468 | |
469 | |
470 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
471 JVMWrapper("JVM_FillInStackTrace"); | |
472 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
473 java_lang_Throwable::fill_in_stack_trace(exception); | |
474 JVM_END | |
475 | |
476 | |
477 JVM_ENTRY(void, JVM_PrintStackTrace(JNIEnv *env, jobject receiver, jobject printable)) | |
478 JVMWrapper("JVM_PrintStackTrace"); | |
479 // Note: This is no longer used in Merlin, but we still support it for compatibility. | |
480 oop exception = JNIHandles::resolve_non_null(receiver); | |
481 oop stream = JNIHandles::resolve_non_null(printable); | |
482 java_lang_Throwable::print_stack_trace(exception, stream); | |
483 JVM_END | |
484 | |
485 | |
486 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
487 JVMWrapper("JVM_GetStackTraceDepth"); | |
488 oop exception = JNIHandles::resolve(throwable); | |
489 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
490 JVM_END | |
491 | |
492 | |
493 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
494 JVMWrapper("JVM_GetStackTraceElement"); | |
495 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
496 oop exception = JNIHandles::resolve(throwable); | |
497 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
498 return JNIHandles::make_local(env, element); | |
499 JVM_END | |
500 | |
501 | |
502 // java.lang.Object /////////////////////////////////////////////// | |
503 | |
504 | |
505 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
506 JVMWrapper("JVM_IHashCode"); | |
507 // as implemented in the classic virtual machine; return 0 if object is NULL | |
508 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
509 JVM_END | |
510 | |
511 | |
512 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
513 JVMWrapper("JVM_MonitorWait"); | |
514 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
515 assert(obj->is_instance() || obj->is_array(), "JVM_MonitorWait must apply to an object"); | |
516 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
517 if (JvmtiExport::should_post_monitor_wait()) { | |
518 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
519 } | |
520 ObjectSynchronizer::wait(obj, ms, CHECK); | |
521 JVM_END | |
522 | |
523 | |
524 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
525 JVMWrapper("JVM_MonitorNotify"); | |
526 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
527 assert(obj->is_instance() || obj->is_array(), "JVM_MonitorNotify must apply to an object"); | |
528 ObjectSynchronizer::notify(obj, CHECK); | |
529 JVM_END | |
530 | |
531 | |
532 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
533 JVMWrapper("JVM_MonitorNotifyAll"); | |
534 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
535 assert(obj->is_instance() || obj->is_array(), "JVM_MonitorNotifyAll must apply to an object"); | |
536 ObjectSynchronizer::notifyall(obj, CHECK); | |
537 JVM_END | |
538 | |
539 | |
540 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
541 JVMWrapper("JVM_Clone"); | |
542 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
543 const KlassHandle klass (THREAD, obj->klass()); | |
544 JvmtiVMObjectAllocEventCollector oam; | |
545 | |
546 #ifdef ASSERT | |
547 // Just checking that the cloneable flag is set correct | |
548 if (obj->is_javaArray()) { | |
549 guarantee(klass->is_cloneable(), "all arrays are cloneable"); | |
550 } else { | |
551 guarantee(obj->is_instance(), "should be instanceOop"); | |
1142 | 552 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
0 | 553 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
554 } | |
555 #endif | |
556 | |
557 // Check if class of obj supports the Cloneable interface. | |
558 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
559 if (!klass->is_cloneable()) { | |
560 ResourceMark rm(THREAD); | |
561 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
562 } | |
563 | |
564 // Make shallow object copy | |
565 const int size = obj->size(); | |
566 oop new_obj = NULL; | |
567 if (obj->is_javaArray()) { | |
568 const int length = ((arrayOop)obj())->length(); | |
569 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
570 } else { | |
571 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
572 } | |
573 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
574 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
575 // be suspended in the middle of copying the pointer and end up with parts | |
576 // of two different pointers in the field. Subsequent dereferences will crash. | |
577 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
578 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
579 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
580 // The same is true of StubRoutines::object_copy and the various oop_copy | |
581 // variants, and of the code generated by the inline_native_clone intrinsic. | |
582 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
583 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
584 (size_t)align_object_size(size) / HeapWordsPerLong); | |
585 // Clear the header | |
586 new_obj->init_mark(); | |
587 | |
588 // Store check (mark entire object and let gc sort it out) | |
589 BarrierSet* bs = Universe::heap()->barrier_set(); | |
590 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
591 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
592 | |
593 // Caution: this involves a java upcall, so the clone should be | |
594 // "gc-robust" by this stage. | |
595 if (klass->has_finalizer()) { | |
596 assert(obj->is_instance(), "should be instanceOop"); | |
597 new_obj = instanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); | |
598 } | |
599 | |
600 return JNIHandles::make_local(env, oop(new_obj)); | |
601 JVM_END | |
602 | |
603 // java.lang.Compiler //////////////////////////////////////////////////// | |
604 | |
605 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
606 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
607 // functions are all silently ignored unless JVM warnings are printed. | |
608 | |
609 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
610 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
611 JVM_END | |
612 | |
613 | |
614 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
615 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
616 return JNI_FALSE; | |
617 JVM_END | |
618 | |
619 | |
620 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
621 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
622 return JNI_FALSE; | |
623 JVM_END | |
624 | |
625 | |
626 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
627 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
628 return JNI_FALSE; | |
629 JVM_END | |
630 | |
631 | |
632 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
633 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
634 return NULL; | |
635 JVM_END | |
636 | |
637 | |
638 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
639 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
640 JVM_END | |
641 | |
642 | |
643 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
644 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
645 JVM_END | |
646 | |
647 | |
648 | |
649 // Error message support ////////////////////////////////////////////////////// | |
650 | |
651 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
652 JVMWrapper("JVM_GetLastErrorString"); | |
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653 return (jint)os::lasterror(buf, len); |
0 | 654 JVM_END |
655 | |
656 | |
657 // java.io.File /////////////////////////////////////////////////////////////// | |
658 | |
659 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
660 JVMWrapper2("JVM_NativePath (%s)", path); | |
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661 return os::native_path(path); |
0 | 662 JVM_END |
663 | |
664 | |
665 // Misc. class handling /////////////////////////////////////////////////////////// | |
666 | |
667 | |
668 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
669 JVMWrapper("JVM_GetCallerClass"); | |
670 klassOop k = thread->security_get_caller_class(depth); | |
671 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); | |
672 JVM_END | |
673 | |
674 | |
675 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
676 JVMWrapper("JVM_FindPrimitiveClass"); | |
677 oop mirror = NULL; | |
678 BasicType t = name2type(utf); | |
679 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
680 mirror = Universe::java_mirror(t); | |
681 } | |
682 if (mirror == NULL) { | |
683 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
684 } else { | |
685 return (jclass) JNIHandles::make_local(env, mirror); | |
686 } | |
687 JVM_END | |
688 | |
689 | |
690 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
691 JVMWrapper("JVM_ResolveClass"); | |
692 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
693 JVM_END | |
694 | |
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695 |
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696 // Returns a class loaded by the bootstrap class loader; or null |
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697 // if not found. ClassNotFoundException is not thrown. |
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698 // |
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699 // Rationale behind JVM_FindClassFromBootLoader |
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700 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
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701 // b> because of (a) java.dll has a direct dependecy on the unexported |
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702 // private symbol "_JVM_FindClassFromClassLoader@20". |
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703 // c> the launcher cannot use the private symbol as it dynamically opens |
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704 // the entry point, so if something changes, the launcher will fail |
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705 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
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706 // stable exported interface. |
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707 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
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708 // signature to change from _JVM_FindClassFromClassLoader@20 to |
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709 // JVM_FindClassFromClassLoader and will not be backward compatible |
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710 // with older JDKs. |
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711 // Thus a public/stable exported entry point is the right solution, |
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712 // public here means public in linker semantics, and is exported only |
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713 // to the JDK, and is not intended to be a public API. |
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714 |
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715 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
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716 const char* name)) |
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717 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
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718 |
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719 // Java libraries should ensure that name is never null... |
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720 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
878
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721 // It's impossible to create this class; the name cannot fit |
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722 // into the constant pool. |
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723 return NULL; |
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724 } |
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725 |
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726 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
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727 klassOop k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
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728 if (k == NULL) { |
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729 return NULL; |
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730 } |
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731 |
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732 if (TraceClassResolution) { |
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733 trace_class_resolution(k); |
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734 } |
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735 return (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); |
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736 JVM_END |
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737 |
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738 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
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739 jboolean init, jobject loader, |
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740 jboolean throwError)) |
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741 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
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742 throwError ? "error" : "exception"); |
388 | 743 // Java libraries should ensure that name is never null... |
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744 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
388 | 745 // It's impossible to create this class; the name cannot fit |
746 // into the constant pool. | |
747 if (throwError) { | |
748 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
749 } else { | |
750 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
751 } | |
752 } | |
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753 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
388 | 754 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
755 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
756 Handle(), throwError, THREAD); | |
757 | |
758 if (TraceClassResolution && result != NULL) { | |
759 trace_class_resolution(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(result))); | |
760 } | |
761 return result; | |
0 | 762 JVM_END |
763 | |
764 | |
765 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
766 jboolean init, jclass from)) | |
767 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
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768 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
0 | 769 // It's impossible to create this class; the name cannot fit |
770 // into the constant pool. | |
771 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
772 } | |
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773 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
0 | 774 oop from_class_oop = JNIHandles::resolve(from); |
775 klassOop from_class = (from_class_oop == NULL) | |
776 ? (klassOop)NULL | |
777 : java_lang_Class::as_klassOop(from_class_oop); | |
778 oop class_loader = NULL; | |
779 oop protection_domain = NULL; | |
780 if (from_class != NULL) { | |
781 class_loader = Klass::cast(from_class)->class_loader(); | |
782 protection_domain = Klass::cast(from_class)->protection_domain(); | |
783 } | |
784 Handle h_loader(THREAD, class_loader); | |
785 Handle h_prot (THREAD, protection_domain); | |
786 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
787 h_prot, true, thread); | |
788 | |
789 if (TraceClassResolution && result != NULL) { | |
790 // this function is generally only used for class loading during verification. | |
791 ResourceMark rm; | |
792 oop from_mirror = JNIHandles::resolve_non_null(from); | |
793 klassOop from_class = java_lang_Class::as_klassOop(from_mirror); | |
794 const char * from_name = Klass::cast(from_class)->external_name(); | |
795 | |
796 oop mirror = JNIHandles::resolve_non_null(result); | |
797 klassOop to_class = java_lang_Class::as_klassOop(mirror); | |
798 const char * to = Klass::cast(to_class)->external_name(); | |
799 tty->print("RESOLVE %s %s (verification)\n", from_name, to); | |
800 } | |
801 | |
802 return result; | |
803 JVM_END | |
804 | |
805 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
806 if (loader.is_null()) { | |
807 return; | |
808 } | |
809 | |
810 // check whether the current caller thread holds the lock or not. | |
811 // If not, increment the corresponding counter | |
812 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
813 ObjectSynchronizer::owner_self) { | |
814 counter->inc(); | |
815 } | |
816 } | |
817 | |
818 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
973
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819 // and JVM_DefineClassWithSourceCond() |
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820 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
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821 jobject loader, const jbyte *buf, |
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822 jsize len, jobject pd, const char *source, |
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823 jboolean verify, TRAPS) { |
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824 if (source == NULL) source = "__JVM_DefineClass__"; |
0 | 825 |
875
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826 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
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827 JavaThread* jt = (JavaThread*) THREAD; |
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828 |
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829 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
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830 ClassLoader::perf_define_appclass_selftime(), |
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831 ClassLoader::perf_define_appclasses(), |
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832 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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833 jt->get_thread_stat()->perf_timers_addr(), |
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834 PerfClassTraceTime::DEFINE_CLASS); |
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835 |
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836 if (UsePerfData) { |
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837 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
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838 } |
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839 |
0 | 840 // Since exceptions can be thrown, class initialization can take place |
841 // if name is NULL no check for class name in .class stream has to be made. | |
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842 TempNewSymbol class_name = NULL; |
0 | 843 if (name != NULL) { |
844 const int str_len = (int)strlen(name); | |
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845 if (str_len > Symbol::max_length()) { |
0 | 846 // It's impossible to create this class; the name cannot fit |
847 // into the constant pool. | |
848 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
849 } | |
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850 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
0 | 851 } |
852 | |
853 ResourceMark rm(THREAD); | |
854 ClassFileStream st((u1*) buf, len, (char *)source); | |
855 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
856 if (UsePerfData) { | |
857 is_lock_held_by_thread(class_loader, | |
858 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
859 THREAD); | |
860 } | |
861 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
862 klassOop k = SystemDictionary::resolve_from_stream(class_name, class_loader, | |
863 protection_domain, &st, | |
973
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864 verify != 0, |
0 | 865 CHECK_NULL); |
866 | |
867 if (TraceClassResolution && k != NULL) { | |
868 trace_class_resolution(k); | |
869 } | |
870 | |
871 return (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); | |
872 } | |
873 | |
874 | |
875 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
876 JVMWrapper2("JVM_DefineClass %s", name); | |
877 | |
973
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878 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
0 | 879 JVM_END |
880 | |
881 | |
882 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
883 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
884 | |
973
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885 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
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886 JVM_END |
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887 |
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888 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
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889 jobject loader, const jbyte *buf, |
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890 jsize len, jobject pd, |
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891 const char *source, jboolean verify)) |
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892 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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893 |
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894 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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895 JVM_END |
0 | 896 |
897 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
898 JVMWrapper("JVM_FindLoadedClass"); | |
899 ResourceMark rm(THREAD); | |
900 | |
901 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
902 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
903 | |
904 const char* str = java_lang_String::as_utf8_string(string()); | |
905 // Sanity check, don't expect null | |
906 if (str == NULL) return NULL; | |
907 | |
908 const int str_len = (int)strlen(str); | |
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909 if (str_len > Symbol::max_length()) { |
0 | 910 // It's impossible to create this class; the name cannot fit |
911 // into the constant pool. | |
912 return NULL; | |
913 } | |
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914 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
0 | 915 |
916 // Security Note: | |
917 // The Java level wrapper will perform the necessary security check allowing | |
918 // us to pass the NULL as the initiating class loader. | |
919 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
920 if (UsePerfData) { | |
921 is_lock_held_by_thread(h_loader, | |
922 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
923 THREAD); | |
924 } | |
925 | |
926 klassOop k = SystemDictionary::find_instance_or_array_klass(klass_name, | |
927 h_loader, | |
928 Handle(), | |
929 CHECK_NULL); | |
930 | |
931 return (k == NULL) ? NULL : | |
932 (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); | |
933 JVM_END | |
934 | |
935 | |
936 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
937 | |
938 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
939 assert (cls != NULL, "illegal class"); | |
940 JVMWrapper("JVM_GetClassName"); | |
941 JvmtiVMObjectAllocEventCollector oam; | |
942 ResourceMark rm(THREAD); | |
943 const char* name; | |
944 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
945 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
946 } else { | |
947 // Consider caching interned string in Klass | |
948 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
949 assert(k->is_klass(), "just checking"); | |
950 name = Klass::cast(k)->external_name(); | |
951 } | |
952 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
953 return (jstring) JNIHandles::make_local(env, result); | |
954 JVM_END | |
955 | |
956 | |
957 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
958 JVMWrapper("JVM_GetClassInterfaces"); | |
959 JvmtiVMObjectAllocEventCollector oam; | |
960 oop mirror = JNIHandles::resolve_non_null(cls); | |
961 | |
962 // Special handling for primitive objects | |
963 if (java_lang_Class::is_primitive(mirror)) { | |
964 // Primitive objects does not have any interfaces | |
1142 | 965 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 966 return (jobjectArray) JNIHandles::make_local(env, r); |
967 } | |
968 | |
969 KlassHandle klass(thread, java_lang_Class::as_klassOop(mirror)); | |
970 // Figure size of result array | |
971 int size; | |
972 if (klass->oop_is_instance()) { | |
973 size = instanceKlass::cast(klass())->local_interfaces()->length(); | |
974 } else { | |
975 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
976 size = 2; | |
977 } | |
978 | |
979 // Allocate result array | |
1142 | 980 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
0 | 981 objArrayHandle result (THREAD, r); |
982 // Fill in result | |
983 if (klass->oop_is_instance()) { | |
984 // Regular instance klass, fill in all local interfaces | |
985 for (int index = 0; index < size; index++) { | |
986 klassOop k = klassOop(instanceKlass::cast(klass())->local_interfaces()->obj_at(index)); | |
987 result->obj_at_put(index, Klass::cast(k)->java_mirror()); | |
988 } | |
989 } else { | |
990 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
1142 | 991 result->obj_at_put(0, Klass::cast(SystemDictionary::Cloneable_klass())->java_mirror()); |
992 result->obj_at_put(1, Klass::cast(SystemDictionary::Serializable_klass())->java_mirror()); | |
0 | 993 } |
994 return (jobjectArray) JNIHandles::make_local(env, result()); | |
995 JVM_END | |
996 | |
997 | |
998 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
999 JVMWrapper("JVM_GetClassLoader"); | |
1000 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1001 return NULL; | |
1002 } | |
1003 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
1004 oop loader = Klass::cast(k)->class_loader(); | |
1005 return JNIHandles::make_local(env, loader); | |
1006 JVM_END | |
1007 | |
1008 | |
1009 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
1010 JVMWrapper("JVM_IsInterface"); | |
1011 oop mirror = JNIHandles::resolve_non_null(cls); | |
1012 if (java_lang_Class::is_primitive(mirror)) { | |
1013 return JNI_FALSE; | |
1014 } | |
1015 klassOop k = java_lang_Class::as_klassOop(mirror); | |
1016 jboolean result = Klass::cast(k)->is_interface(); | |
1017 assert(!result || Klass::cast(k)->oop_is_instance(), | |
1018 "all interfaces are instance types"); | |
1019 // The compiler intrinsic for isInterface tests the | |
1020 // Klass::_access_flags bits in the same way. | |
1021 return result; | |
1022 JVM_END | |
1023 | |
1024 | |
1025 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
1026 JVMWrapper("JVM_GetClassSigners"); | |
1027 JvmtiVMObjectAllocEventCollector oam; | |
1028 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1029 // There are no signers for primitive types | |
1030 return NULL; | |
1031 } | |
1032 | |
1033 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
1034 objArrayOop signers = NULL; | |
1035 if (Klass::cast(k)->oop_is_instance()) { | |
1036 signers = instanceKlass::cast(k)->signers(); | |
1037 } | |
1038 | |
1039 // If there are no signers set in the class, or if the class | |
1040 // is an array, return NULL. | |
1041 if (signers == NULL) return NULL; | |
1042 | |
1043 // copy of the signers array | |
1044 klassOop element = objArrayKlass::cast(signers->klass())->element_klass(); | |
1045 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); | |
1046 for (int index = 0; index < signers->length(); index++) { | |
1047 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
1048 } | |
1049 | |
1050 // return the copy | |
1051 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
1052 JVM_END | |
1053 | |
1054 | |
1055 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
1056 JVMWrapper("JVM_SetClassSigners"); | |
1057 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1058 // This call is ignored for primitive types and arrays. | |
1059 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
1060 // be called with an array. Only the bootstrap loader creates arrays. | |
1061 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
1062 if (Klass::cast(k)->oop_is_instance()) { | |
1063 instanceKlass::cast(k)->set_signers(objArrayOop(JNIHandles::resolve(signers))); | |
1064 } | |
1065 } | |
1066 JVM_END | |
1067 | |
1068 | |
1069 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
1070 JVMWrapper("JVM_GetProtectionDomain"); | |
1071 if (JNIHandles::resolve(cls) == NULL) { | |
1072 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
1073 } | |
1074 | |
1075 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1076 // Primitive types does not have a protection domain. | |
1077 return NULL; | |
1078 } | |
1079 | |
1080 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
1081 return (jobject) JNIHandles::make_local(env, Klass::cast(k)->protection_domain()); | |
1082 JVM_END | |
1083 | |
1084 | |
1085 // Obsolete since 1.2 (Class.setProtectionDomain removed), although | |
1086 // still defined in core libraries as of 1.5. | |
1087 JVM_ENTRY(void, JVM_SetProtectionDomain(JNIEnv *env, jclass cls, jobject protection_domain)) | |
1088 JVMWrapper("JVM_SetProtectionDomain"); | |
1089 if (JNIHandles::resolve(cls) == NULL) { | |
1090 THROW(vmSymbols::java_lang_NullPointerException()); | |
1091 } | |
1092 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1093 // Call is ignored for primitive types | |
1094 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
1095 | |
1096 // cls won't be an array, as this called only from ClassLoader.defineClass | |
1097 if (Klass::cast(k)->oop_is_instance()) { | |
1098 oop pd = JNIHandles::resolve(protection_domain); | |
1099 assert(pd == NULL || pd->is_oop(), "just checking"); | |
1100 instanceKlass::cast(k)->set_protection_domain(pd); | |
1101 } | |
1102 } | |
1103 JVM_END | |
1104 | |
1105 | |
1106 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
1107 JVMWrapper("JVM_DoPrivileged"); | |
1108 | |
1109 if (action == NULL) { | |
1110 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
1111 } | |
1112 | |
1113 // Stack allocated list of privileged stack elements | |
1114 PrivilegedElement pi; | |
1115 | |
1116 // Check that action object understands "Object run()" | |
1117 Handle object (THREAD, JNIHandles::resolve(action)); | |
1118 | |
1119 // get run() method | |
1120 methodOop m_oop = Klass::cast(object->klass())->uncached_lookup_method( | |
1121 vmSymbols::run_method_name(), | |
1122 vmSymbols::void_object_signature()); | |
1123 methodHandle m (THREAD, m_oop); | |
1124 if (m.is_null() || !m->is_method() || !methodOop(m())->is_public() || methodOop(m())->is_static()) { | |
1125 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); | |
1126 } | |
1127 | |
1128 // Compute the frame initiating the do privileged operation and setup the privileged stack | |
1129 vframeStream vfst(thread); | |
1130 vfst.security_get_caller_frame(1); | |
1131 | |
1132 if (!vfst.at_end()) { | |
1133 pi.initialize(&vfst, JNIHandles::resolve(context), thread->privileged_stack_top(), CHECK_NULL); | |
1134 thread->set_privileged_stack_top(&pi); | |
1135 } | |
1136 | |
1137 | |
1138 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
1139 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
1140 Handle pending_exception; | |
1141 JavaValue result(T_OBJECT); | |
1142 JavaCallArguments args(object); | |
1143 JavaCalls::call(&result, m, &args, THREAD); | |
1144 | |
1145 // done with action, remove ourselves from the list | |
1146 if (!vfst.at_end()) { | |
1147 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
1148 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
1149 } | |
1150 | |
1151 if (HAS_PENDING_EXCEPTION) { | |
1152 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
1153 CLEAR_PENDING_EXCEPTION; | |
1154 | |
1142 | 1155 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
1156 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
0 | 1157 // Throw a java.security.PrivilegedActionException(Exception e) exception |
1158 JavaCallArguments args(pending_exception); | |
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1159 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1160 vmSymbols::exception_void_signature(), |
0 | 1161 &args); |
1162 } | |
1163 } | |
1164 | |
1165 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
1166 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
1167 JVM_END | |
1168 | |
1169 | |
1170 // Returns the inherited_access_control_context field of the running thread. | |
1171 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
1172 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
1173 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
1174 return JNIHandles::make_local(env, result); | |
1175 JVM_END | |
1176 | |
1177 class RegisterArrayForGC { | |
1178 private: | |
1179 JavaThread *_thread; | |
1180 public: | |
1181 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
1182 _thread = thread; | |
1183 _thread->register_array_for_gc(array); | |
1184 } | |
1185 | |
1186 ~RegisterArrayForGC() { | |
1187 _thread->register_array_for_gc(NULL); | |
1188 } | |
1189 }; | |
1190 | |
1191 | |
1192 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
1193 JVMWrapper("JVM_GetStackAccessControlContext"); | |
1194 if (!UsePrivilegedStack) return NULL; | |
1195 | |
1196 ResourceMark rm(THREAD); | |
1197 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
1198 JvmtiVMObjectAllocEventCollector oam; | |
1199 | |
1200 // count the protection domains on the execution stack. We collapse | |
1201 // duplicate consecutive protection domains into a single one, as | |
1202 // well as stopping when we hit a privileged frame. | |
1203 | |
1204 // Use vframeStream to iterate through Java frames | |
1205 vframeStream vfst(thread); | |
1206 | |
1207 oop previous_protection_domain = NULL; | |
1208 Handle privileged_context(thread, NULL); | |
1209 bool is_privileged = false; | |
1210 oop protection_domain = NULL; | |
1211 | |
1212 for(; !vfst.at_end(); vfst.next()) { | |
1213 // get method of frame | |
1214 methodOop method = vfst.method(); | |
1215 intptr_t* frame_id = vfst.frame_id(); | |
1216 | |
1217 // check the privileged frames to see if we have a match | |
1218 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
1219 // this frame is privileged | |
1220 is_privileged = true; | |
1221 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
1222 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
1223 } else { | |
1224 protection_domain = instanceKlass::cast(method->method_holder())->protection_domain(); | |
1225 } | |
1226 | |
1227 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
1228 local_array->push(protection_domain); | |
1229 previous_protection_domain = protection_domain; | |
1230 } | |
1231 | |
1232 if (is_privileged) break; | |
1233 } | |
1234 | |
1235 | |
1236 // either all the domains on the stack were system domains, or | |
1237 // we had a privileged system domain | |
1238 if (local_array->is_empty()) { | |
1239 if (is_privileged && privileged_context.is_null()) return NULL; | |
1240 | |
1241 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
1242 return JNIHandles::make_local(env, result); | |
1243 } | |
1244 | |
1245 // the resource area must be registered in case of a gc | |
1246 RegisterArrayForGC ragc(thread, local_array); | |
1142 | 1247 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
0 | 1248 local_array->length(), CHECK_NULL); |
1249 objArrayHandle h_context(thread, context); | |
1250 for (int index = 0; index < local_array->length(); index++) { | |
1251 h_context->obj_at_put(index, local_array->at(index)); | |
1252 } | |
1253 | |
1254 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
1255 | |
1256 return JNIHandles::make_local(env, result); | |
1257 JVM_END | |
1258 | |
1259 | |
1260 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
1261 JVMWrapper("JVM_IsArrayClass"); | |
1262 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
1263 return (k != NULL) && Klass::cast(k)->oop_is_javaArray() ? true : false; | |
1264 JVM_END | |
1265 | |
1266 | |
1267 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
1268 JVMWrapper("JVM_IsPrimitiveClass"); | |
1269 oop mirror = JNIHandles::resolve_non_null(cls); | |
1270 return (jboolean) java_lang_Class::is_primitive(mirror); | |
1271 JVM_END | |
1272 | |
1273 | |
1274 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
1275 JVMWrapper("JVM_GetComponentType"); | |
1276 oop mirror = JNIHandles::resolve_non_null(cls); | |
1277 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
1278 return (jclass) JNIHandles::make_local(env, result); | |
1279 JVM_END | |
1280 | |
1281 | |
1282 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
1283 JVMWrapper("JVM_GetClassModifiers"); | |
1284 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1285 // Primitive type | |
1286 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1287 } | |
1288 | |
1289 Klass* k = Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls))); | |
1290 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); | |
1291 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
1292 return k->modifier_flags(); | |
1293 JVM_END | |
1294 | |
1295 | |
1296 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
1297 | |
1298 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
1299 const int inner_class_info_index = 0; | |
1300 const int outer_class_info_index = 1; | |
1301 | |
1302 JvmtiVMObjectAllocEventCollector oam; | |
1303 // ofClass is a reference to a java_lang_Class object. The mirror object | |
1304 // of an instanceKlass | |
1305 | |
1306 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
1307 ! Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_instance()) { | |
1142 | 1308 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1309 return (jobjectArray)JNIHandles::make_local(env, result); |
1310 } | |
1311 | |
1312 instanceKlassHandle k(thread, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
1313 | |
1314 if (k->inner_classes()->length() == 0) { | |
1315 // Neither an inner nor outer class | |
1142 | 1316 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
0 | 1317 return (jobjectArray)JNIHandles::make_local(env, result); |
1318 } | |
1319 | |
1320 // find inner class info | |
1321 typeArrayHandle icls(thread, k->inner_classes()); | |
1322 constantPoolHandle cp(thread, k->constants()); | |
1323 int length = icls->length(); | |
1324 | |
1325 // Allocate temp. result array | |
1142 | 1326 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
0 | 1327 objArrayHandle result (THREAD, r); |
1328 int members = 0; | |
1329 | |
1330 for(int i = 0; i < length; i += 4) { | |
1331 int ioff = icls->ushort_at(i + inner_class_info_index); | |
1332 int ooff = icls->ushort_at(i + outer_class_info_index); | |
1333 | |
1334 if (ioff != 0 && ooff != 0) { | |
1335 // Check to see if the name matches the class we're looking for | |
1336 // before attempting to find the class. | |
1337 if (cp->klass_name_at_matches(k, ooff)) { | |
1338 klassOop outer_klass = cp->klass_at(ooff, CHECK_NULL); | |
1339 if (outer_klass == k()) { | |
1340 klassOop ik = cp->klass_at(ioff, CHECK_NULL); | |
1341 instanceKlassHandle inner_klass (THREAD, ik); | |
1342 | |
1343 // Throws an exception if outer klass has not declared k as | |
1344 // an inner klass | |
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1345 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
0 | 1346 |
1347 result->obj_at_put(members, inner_klass->java_mirror()); | |
1348 members++; | |
1349 } | |
1350 } | |
1351 } | |
1352 } | |
1353 | |
1354 if (members != length) { | |
1355 // Return array of right length | |
1142 | 1356 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
0 | 1357 for(int i = 0; i < members; i++) { |
1358 res->obj_at_put(i, result->obj_at(i)); | |
1359 } | |
1360 return (jobjectArray)JNIHandles::make_local(env, res); | |
1361 } | |
1362 | |
1363 return (jobjectArray)JNIHandles::make_local(env, result()); | |
1364 JVM_END | |
1365 | |
1366 | |
1367 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
665
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1368 { |
0 | 1369 // ofClass is a reference to a java_lang_Class object. |
1370 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
1371 ! Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_instance()) { | |
1372 return NULL; | |
1373 } | |
1374 | |
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1375 bool inner_is_member = false; |
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1376 klassOop outer_klass |
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1377 = instanceKlass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)) |
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1378 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
665
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1379 if (outer_klass == NULL) return NULL; // already a top-level class |
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1380 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
665
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1381 return (jclass) JNIHandles::make_local(env, Klass::cast(outer_klass)->java_mirror()); |
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1382 } |
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1383 JVM_END |
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1384 |
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1385 // should be in instanceKlass.cpp, but is here for historical reasons |
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1386 klassOop instanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
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1387 bool* inner_is_member, |
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1388 TRAPS) { |
665
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1389 Thread* thread = THREAD; |
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1390 const int inner_class_info_index = inner_class_inner_class_info_offset; |
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1391 const int outer_class_info_index = inner_class_outer_class_info_offset; |
0 | 1392 |
1393 if (k->inner_classes()->length() == 0) { | |
1394 // No inner class info => no declaring class | |
1395 return NULL; | |
1396 } | |
1397 | |
1398 typeArrayHandle i_icls(thread, k->inner_classes()); | |
1399 constantPoolHandle i_cp(thread, k->constants()); | |
1400 int i_length = i_icls->length(); | |
1401 | |
1402 bool found = false; | |
1403 klassOop ok; | |
1404 instanceKlassHandle outer_klass; | |
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1405 *inner_is_member = false; |
0 | 1406 |
1407 // Find inner_klass attribute | |
665
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1408 for (int i = 0; i < i_length && !found; i += inner_class_next_offset) { |
0 | 1409 int ioff = i_icls->ushort_at(i + inner_class_info_index); |
1410 int ooff = i_icls->ushort_at(i + outer_class_info_index); | |
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1411 int noff = i_icls->ushort_at(i + inner_class_inner_name_offset); |
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1412 if (ioff != 0) { |
0 | 1413 // Check to see if the name matches the class we're looking for |
1414 // before attempting to find the class. | |
1415 if (i_cp->klass_name_at_matches(k, ioff)) { | |
1416 klassOop inner_klass = i_cp->klass_at(ioff, CHECK_NULL); | |
665
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1417 found = (k() == inner_klass); |
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1418 if (found && ooff != 0) { |
0 | 1419 ok = i_cp->klass_at(ooff, CHECK_NULL); |
1420 outer_klass = instanceKlassHandle(thread, ok); | |
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1421 *inner_is_member = true; |
0 | 1422 } |
1423 } | |
1424 } | |
1425 } | |
1426 | |
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1427 if (found && outer_klass.is_null()) { |
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1428 // It may be anonymous; try for that. |
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1429 int encl_method_class_idx = k->enclosing_method_class_index(); |
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1430 if (encl_method_class_idx != 0) { |
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1431 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
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1432 outer_klass = instanceKlassHandle(thread, ok); |
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1433 *inner_is_member = false; |
665
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1434 } |
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1435 } |
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1436 |
0 | 1437 // If no inner class attribute found for this class. |
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1438 if (outer_klass.is_null()) return NULL; |
0 | 1439 |
1440 // Throws an exception if outer klass has not declared k as an inner klass | |
665
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1441 // We need evidence that each klass knows about the other, or else |
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1442 // the system could allow a spoof of an inner class to gain access rights. |
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1443 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
665
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1444 return outer_klass(); |
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1445 } |
0 | 1446 |
1447 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
1448 assert (cls != NULL, "illegal class"); | |
1449 JVMWrapper("JVM_GetClassSignature"); | |
1450 JvmtiVMObjectAllocEventCollector oam; | |
1451 ResourceMark rm(THREAD); | |
1452 // Return null for arrays and primatives | |
1453 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1454 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
1455 if (Klass::cast(k)->oop_is_instance()) { | |
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1456 Symbol* sym = instanceKlass::cast(k)->generic_signature(); |
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1457 if (sym == NULL) return NULL; |
0 | 1458 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
1459 return (jstring) JNIHandles::make_local(env, str()); | |
1460 } | |
1461 } | |
1462 return NULL; | |
1463 JVM_END | |
1464 | |
1465 | |
1466 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
1467 assert (cls != NULL, "illegal class"); | |
1468 JVMWrapper("JVM_GetClassAnnotations"); | |
1469 ResourceMark rm(THREAD); | |
1470 // Return null for arrays and primitives | |
1471 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
1472 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
1473 if (Klass::cast(k)->oop_is_instance()) { | |
1474 return (jbyteArray) JNIHandles::make_local(env, | |
1475 instanceKlass::cast(k)->class_annotations()); | |
1476 } | |
1477 } | |
1478 return NULL; | |
1479 JVM_END | |
1480 | |
1481 | |
1482 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) | |
1483 assert(field != NULL, "illegal field"); | |
1484 JVMWrapper("JVM_GetFieldAnnotations"); | |
1485 | |
1486 // some of this code was adapted from from jni_FromReflectedField | |
1487 | |
1488 // field is a handle to a java.lang.reflect.Field object | |
1489 oop reflected = JNIHandles::resolve_non_null(field); | |
1490 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
1491 klassOop k = java_lang_Class::as_klassOop(mirror); | |
1492 int slot = java_lang_reflect_Field::slot(reflected); | |
1493 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
1494 | |
1495 fieldDescriptor fd; | |
1496 KlassHandle kh(THREAD, k); | |
3938 | 1497 intptr_t offset = instanceKlass::cast(kh())->field_offset(slot); |
0 | 1498 |
1499 if (modifiers & JVM_ACC_STATIC) { | |
1500 // for static fields we only look in the current class | |
1501 if (!instanceKlass::cast(kh())->find_local_field_from_offset(offset, | |
1502 true, &fd)) { | |
1503 assert(false, "cannot find static field"); | |
1504 return NULL; // robustness | |
1505 } | |
1506 } else { | |
1507 // for instance fields we start with the current class and work | |
1508 // our way up through the superclass chain | |
1509 if (!instanceKlass::cast(kh())->find_field_from_offset(offset, false, | |
1510 &fd)) { | |
1511 assert(false, "cannot find instance field"); | |
1512 return NULL; // robustness | |
1513 } | |
1514 } | |
1515 | |
1516 return (jbyteArray) JNIHandles::make_local(env, fd.annotations()); | |
1517 JVM_END | |
1518 | |
1519 | |
1520 static methodOop jvm_get_method_common(jobject method, TRAPS) { | |
1521 // some of this code was adapted from from jni_FromReflectedMethod | |
1522 | |
1523 oop reflected = JNIHandles::resolve_non_null(method); | |
1524 oop mirror = NULL; | |
1525 int slot = 0; | |
1526 | |
1142 | 1527 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
0 | 1528 mirror = java_lang_reflect_Constructor::clazz(reflected); |
1529 slot = java_lang_reflect_Constructor::slot(reflected); | |
1530 } else { | |
1142 | 1531 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
0 | 1532 "wrong type"); |
1533 mirror = java_lang_reflect_Method::clazz(reflected); | |
1534 slot = java_lang_reflect_Method::slot(reflected); | |
1535 } | |
1536 klassOop k = java_lang_Class::as_klassOop(mirror); | |
1537 | |
1538 KlassHandle kh(THREAD, k); | |
1539 methodOop m = instanceKlass::cast(kh())->method_with_idnum(slot); | |
1540 if (m == NULL) { | |
1541 assert(false, "cannot find method"); | |
1542 return NULL; // robustness | |
1543 } | |
1544 | |
1545 return m; | |
1546 } | |
1547 | |
1548 | |
1549 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
1550 JVMWrapper("JVM_GetMethodAnnotations"); | |
1551 | |
1552 // method is a handle to a java.lang.reflect.Method object | |
1553 methodOop m = jvm_get_method_common(method, CHECK_NULL); | |
1554 return (jbyteArray) JNIHandles::make_local(env, m->annotations()); | |
1555 JVM_END | |
1556 | |
1557 | |
1558 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
1559 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
1560 | |
1561 // method is a handle to a java.lang.reflect.Method object | |
1562 methodOop m = jvm_get_method_common(method, CHECK_NULL); | |
1563 return (jbyteArray) JNIHandles::make_local(env, m->annotation_default()); | |
1564 JVM_END | |
1565 | |
1566 | |
1567 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
1568 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
1569 | |
1570 // method is a handle to a java.lang.reflect.Method object | |
1571 methodOop m = jvm_get_method_common(method, CHECK_NULL); | |
1572 return (jbyteArray) JNIHandles::make_local(env, m->parameter_annotations()); | |
1573 JVM_END | |
1574 | |
1575 | |
1576 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
1577 | |
1578 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1579 { | |
1580 JVMWrapper("JVM_GetClassDeclaredFields"); | |
1581 JvmtiVMObjectAllocEventCollector oam; | |
1582 | |
1583 // Exclude primitive types and array types | |
1584 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
1585 Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { | |
1586 // Return empty array | |
1142 | 1587 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
0 | 1588 return (jobjectArray) JNIHandles::make_local(env, res); |
1589 } | |
1590 | |
1591 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
1592 constantPoolHandle cp(THREAD, k->constants()); | |
1593 | |
1594 // Ensure class is linked | |
1595 k->link_class(CHECK_NULL); | |
1596 | |
1597 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
1598 bool skip_backtrace = false; | |
1599 | |
1600 // Allocate result | |
1601 int num_fields; | |
1602 | |
1603 if (publicOnly) { | |
1604 num_fields = 0; | |
3938 | 1605 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
1606 if (fs.access_flags().is_public()) ++num_fields; | |
0 | 1607 } |
1608 } else { | |
3938 | 1609 num_fields = k->java_fields_count(); |
0 | 1610 |
1142 | 1611 if (k() == SystemDictionary::Throwable_klass()) { |
0 | 1612 num_fields--; |
1613 skip_backtrace = true; | |
1614 } | |
1615 } | |
1616 | |
1142 | 1617 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
0 | 1618 objArrayHandle result (THREAD, r); |
1619 | |
1620 int out_idx = 0; | |
1621 fieldDescriptor fd; | |
3938 | 1622 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
0 | 1623 if (skip_backtrace) { |
1624 // 4496456 skip java.lang.Throwable.backtrace | |
3938 | 1625 int offset = fs.offset(); |
0 | 1626 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
1627 } | |
1628 | |
3938 | 1629 if (!publicOnly || fs.access_flags().is_public()) { |
1630 fd.initialize(k(), fs.index()); | |
0 | 1631 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
1632 result->obj_at_put(out_idx, field); | |
1633 ++out_idx; | |
1634 } | |
1635 } | |
1636 assert(out_idx == num_fields, "just checking"); | |
1637 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1638 } | |
1639 JVM_END | |
1640 | |
1641 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1642 { | |
1643 JVMWrapper("JVM_GetClassDeclaredMethods"); | |
1644 JvmtiVMObjectAllocEventCollector oam; | |
1645 | |
1646 // Exclude primitive types and array types | |
1647 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
1648 || Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { | |
1649 // Return empty array | |
1142 | 1650 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), 0, CHECK_NULL); |
0 | 1651 return (jobjectArray) JNIHandles::make_local(env, res); |
1652 } | |
1653 | |
1654 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
1655 | |
1656 // Ensure class is linked | |
1657 k->link_class(CHECK_NULL); | |
1658 | |
1659 objArrayHandle methods (THREAD, k->methods()); | |
1660 int methods_length = methods->length(); | |
1661 int num_methods = 0; | |
1662 | |
1663 int i; | |
1664 for (i = 0; i < methods_length; i++) { | |
1665 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
1666 if (!method->is_initializer()) { | |
1667 if (!publicOnly || method->is_public()) { | |
1668 ++num_methods; | |
1669 } | |
1670 } | |
1671 } | |
1672 | |
1673 // Allocate result | |
1142 | 1674 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), num_methods, CHECK_NULL); |
0 | 1675 objArrayHandle result (THREAD, r); |
1676 | |
1677 int out_idx = 0; | |
1678 for (i = 0; i < methods_length; i++) { | |
1679 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
1680 if (!method->is_initializer()) { | |
1681 if (!publicOnly || method->is_public()) { | |
1682 oop m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); | |
1683 result->obj_at_put(out_idx, m); | |
1684 ++out_idx; | |
1685 } | |
1686 } | |
1687 } | |
1688 assert(out_idx == num_methods, "just checking"); | |
1689 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1690 } | |
1691 JVM_END | |
1692 | |
1693 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
1694 { | |
1695 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
1696 JvmtiVMObjectAllocEventCollector oam; | |
1697 | |
1698 // Exclude primitive types and array types | |
1699 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
1700 || Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { | |
1701 // Return empty array | |
1142 | 1702 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), 0 , CHECK_NULL); |
0 | 1703 return (jobjectArray) JNIHandles::make_local(env, res); |
1704 } | |
1705 | |
1706 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
1707 | |
1708 // Ensure class is linked | |
1709 k->link_class(CHECK_NULL); | |
1710 | |
1711 objArrayHandle methods (THREAD, k->methods()); | |
1712 int methods_length = methods->length(); | |
1713 int num_constructors = 0; | |
1714 | |
1715 int i; | |
1716 for (i = 0; i < methods_length; i++) { | |
1717 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
1718 if (method->is_initializer() && !method->is_static()) { | |
1719 if (!publicOnly || method->is_public()) { | |
1720 ++num_constructors; | |
1721 } | |
1722 } | |
1723 } | |
1724 | |
1725 // Allocate result | |
1142 | 1726 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), num_constructors, CHECK_NULL); |
0 | 1727 objArrayHandle result(THREAD, r); |
1728 | |
1729 int out_idx = 0; | |
1730 for (i = 0; i < methods_length; i++) { | |
1731 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
1732 if (method->is_initializer() && !method->is_static()) { | |
1733 if (!publicOnly || method->is_public()) { | |
1734 oop m = Reflection::new_constructor(method, CHECK_NULL); | |
1735 result->obj_at_put(out_idx, m); | |
1736 ++out_idx; | |
1737 } | |
1738 } | |
1739 } | |
1740 assert(out_idx == num_constructors, "just checking"); | |
1741 return (jobjectArray) JNIHandles::make_local(env, result()); | |
1742 } | |
1743 JVM_END | |
1744 | |
1745 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
1746 { | |
1747 JVMWrapper("JVM_GetClassAccessFlags"); | |
1748 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1749 // Primitive type | |
1750 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
1751 } | |
1752 | |
1753 Klass* k = Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls))); | |
1754 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; | |
1755 } | |
1756 JVM_END | |
1757 | |
1758 | |
1759 // Constant pool access ////////////////////////////////////////////////////////// | |
1760 | |
1761 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
1762 { | |
1763 JVMWrapper("JVM_GetClassConstantPool"); | |
1764 JvmtiVMObjectAllocEventCollector oam; | |
1765 | |
1766 // Return null for primitives and arrays | |
1767 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
1768 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
1769 if (Klass::cast(k)->oop_is_instance()) { | |
1770 instanceKlassHandle k_h(THREAD, k); | |
1771 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
1772 sun_reflect_ConstantPool::set_cp_oop(jcp(), k_h->constants()); | |
1773 return JNIHandles::make_local(jcp()); | |
1774 } | |
1775 } | |
1776 return NULL; | |
1777 } | |
1778 JVM_END | |
1779 | |
1780 | |
1781 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject unused, jobject jcpool)) | |
1782 { | |
1783 JVMWrapper("JVM_ConstantPoolGetSize"); | |
1784 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1785 return cp->length(); | |
1786 } | |
1787 JVM_END | |
1788 | |
1789 | |
1790 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { | |
1791 if (!cp->is_within_bounds(index)) { | |
1792 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); | |
1793 } | |
1794 } | |
1795 | |
1796 | |
1797 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1798 { | |
1799 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
1800 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1801 bounds_check(cp, index, CHECK_NULL); | |
1802 constantTag tag = cp->tag_at(index); | |
1803 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
1804 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1805 } | |
1806 klassOop k = cp->klass_at(index, CHECK_NULL); | |
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1807 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 1808 } |
1809 JVM_END | |
1810 | |
1811 | |
1812 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1813 { | |
1814 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
1815 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1816 bounds_check(cp, index, CHECK_NULL); | |
1817 constantTag tag = cp->tag_at(index); | |
1818 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
1819 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1820 } | |
1821 klassOop k = constantPoolOopDesc::klass_at_if_loaded(cp, index); | |
1822 if (k == NULL) return NULL; | |
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1823 return (jclass) JNIHandles::make_local(k->java_mirror()); |
0 | 1824 } |
1825 JVM_END | |
1826 | |
1827 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
1828 constantTag tag = cp->tag_at(index); | |
1829 if (!tag.is_method() && !tag.is_interface_method()) { | |
1830 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1831 } | |
1832 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
1833 klassOop k_o; | |
1834 if (force_resolution) { | |
1835 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
1836 } else { | |
1837 k_o = constantPoolOopDesc::klass_at_if_loaded(cp, klass_ref); | |
1838 if (k_o == NULL) return NULL; | |
1839 } | |
1840 instanceKlassHandle k(THREAD, k_o); | |
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1841 Symbol* name = cp->uncached_name_ref_at(index); |
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1842 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 1843 methodHandle m (THREAD, k->find_method(name, sig)); |
1844 if (m.is_null()) { | |
1845 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
1846 } | |
1847 oop method; | |
1848 if (!m->is_initializer() || m->is_static()) { | |
1849 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
1850 } else { | |
1851 method = Reflection::new_constructor(m, CHECK_NULL); | |
1852 } | |
1853 return JNIHandles::make_local(method); | |
1854 } | |
1855 | |
1856 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1857 { | |
1858 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
1859 JvmtiVMObjectAllocEventCollector oam; | |
1860 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1861 bounds_check(cp, index, CHECK_NULL); | |
1862 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
1863 return res; | |
1864 } | |
1865 JVM_END | |
1866 | |
1867 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1868 { | |
1869 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
1870 JvmtiVMObjectAllocEventCollector oam; | |
1871 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1872 bounds_check(cp, index, CHECK_NULL); | |
1873 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
1874 return res; | |
1875 } | |
1876 JVM_END | |
1877 | |
1878 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
1879 constantTag tag = cp->tag_at(index); | |
1880 if (!tag.is_field()) { | |
1881 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1882 } | |
1883 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
1884 klassOop k_o; | |
1885 if (force_resolution) { | |
1886 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
1887 } else { | |
1888 k_o = constantPoolOopDesc::klass_at_if_loaded(cp, klass_ref); | |
1889 if (k_o == NULL) return NULL; | |
1890 } | |
1891 instanceKlassHandle k(THREAD, k_o); | |
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1892 Symbol* name = cp->uncached_name_ref_at(index); |
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1893 Symbol* sig = cp->uncached_signature_ref_at(index); |
0 | 1894 fieldDescriptor fd; |
1895 klassOop target_klass = k->find_field(name, sig, &fd); | |
1896 if (target_klass == NULL) { | |
1897 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
1898 } | |
1899 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
1900 return JNIHandles::make_local(field); | |
1901 } | |
1902 | |
1903 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1904 { | |
1905 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
1906 JvmtiVMObjectAllocEventCollector oam; | |
1907 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1908 bounds_check(cp, index, CHECK_NULL); | |
1909 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
1910 return res; | |
1911 } | |
1912 JVM_END | |
1913 | |
1914 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1915 { | |
1916 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
1917 JvmtiVMObjectAllocEventCollector oam; | |
1918 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1919 bounds_check(cp, index, CHECK_NULL); | |
1920 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
1921 return res; | |
1922 } | |
1923 JVM_END | |
1924 | |
1925 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1926 { | |
1927 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
1928 JvmtiVMObjectAllocEventCollector oam; | |
1929 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1930 bounds_check(cp, index, CHECK_NULL); | |
1931 constantTag tag = cp->tag_at(index); | |
1932 if (!tag.is_field_or_method()) { | |
1933 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1934 } | |
1935 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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1936 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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1937 Symbol* member_name = cp->uncached_name_ref_at(index); |
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1938 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
1142 | 1939 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
0 | 1940 objArrayHandle dest(THREAD, dest_o); |
1941 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
1942 dest->obj_at_put(0, str()); | |
1943 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
1944 dest->obj_at_put(1, str()); | |
1945 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
1946 dest->obj_at_put(2, str()); | |
1947 return (jobjectArray) JNIHandles::make_local(dest()); | |
1948 } | |
1949 JVM_END | |
1950 | |
1951 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1952 { | |
1953 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
1954 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1955 bounds_check(cp, index, CHECK_0); | |
1956 constantTag tag = cp->tag_at(index); | |
1957 if (!tag.is_int()) { | |
1958 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1959 } | |
1960 return cp->int_at(index); | |
1961 } | |
1962 JVM_END | |
1963 | |
1964 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1965 { | |
1966 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
1967 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1968 bounds_check(cp, index, CHECK_(0L)); | |
1969 constantTag tag = cp->tag_at(index); | |
1970 if (!tag.is_long()) { | |
1971 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1972 } | |
1973 return cp->long_at(index); | |
1974 } | |
1975 JVM_END | |
1976 | |
1977 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1978 { | |
1979 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
1980 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1981 bounds_check(cp, index, CHECK_(0.0f)); | |
1982 constantTag tag = cp->tag_at(index); | |
1983 if (!tag.is_float()) { | |
1984 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1985 } | |
1986 return cp->float_at(index); | |
1987 } | |
1988 JVM_END | |
1989 | |
1990 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
1991 { | |
1992 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
1993 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
1994 bounds_check(cp, index, CHECK_(0.0)); | |
1995 constantTag tag = cp->tag_at(index); | |
1996 if (!tag.is_double()) { | |
1997 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
1998 } | |
1999 return cp->double_at(index); | |
2000 } | |
2001 JVM_END | |
2002 | |
2003 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
2004 { | |
2005 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
2006 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
2007 bounds_check(cp, index, CHECK_NULL); | |
2008 constantTag tag = cp->tag_at(index); | |
2009 if (!tag.is_string() && !tag.is_unresolved_string()) { | |
2010 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2011 } | |
2012 oop str = cp->string_at(index, CHECK_NULL); | |
2013 return (jstring) JNIHandles::make_local(str); | |
2014 } | |
2015 JVM_END | |
2016 | |
2017 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
2018 { | |
2019 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
2020 JvmtiVMObjectAllocEventCollector oam; | |
2021 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
2022 bounds_check(cp, index, CHECK_NULL); | |
2023 constantTag tag = cp->tag_at(index); | |
2024 if (!tag.is_symbol()) { | |
2025 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
2026 } | |
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3582bf76420e
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2027 Symbol* sym = cp->symbol_at(index); |
0 | 2028 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
2029 return (jstring) JNIHandles::make_local(str()); | |
2030 } | |
2031 JVM_END | |
2032 | |
2033 | |
2034 // Assertion support. ////////////////////////////////////////////////////////// | |
2035 | |
2036 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
2037 JVMWrapper("JVM_DesiredAssertionStatus"); | |
2038 assert(cls != NULL, "bad class"); | |
2039 | |
2040 oop r = JNIHandles::resolve(cls); | |
2041 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
2042 if (java_lang_Class::is_primitive(r)) return false; | |
2043 | |
2044 klassOop k = java_lang_Class::as_klassOop(r); | |
2045 assert(Klass::cast(k)->oop_is_instance(), "must be an instance klass"); | |
2046 if (! Klass::cast(k)->oop_is_instance()) return false; | |
2047 | |
2048 ResourceMark rm(THREAD); | |
2049 const char* name = Klass::cast(k)->name()->as_C_string(); | |
2050 bool system_class = Klass::cast(k)->class_loader() == NULL; | |
2051 return JavaAssertions::enabled(name, system_class); | |
2052 | |
2053 JVM_END | |
2054 | |
2055 | |
2056 // Return a new AssertionStatusDirectives object with the fields filled in with | |
2057 // command-line assertion arguments (i.e., -ea, -da). | |
2058 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
2059 JVMWrapper("JVM_AssertionStatusDirectives"); | |
2060 JvmtiVMObjectAllocEventCollector oam; | |
2061 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
2062 return JNIHandles::make_local(env, asd); | |
2063 JVM_END | |
2064 | |
2065 // Verification //////////////////////////////////////////////////////////////////////////////// | |
2066 | |
2067 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
2068 | |
2069 // RedefineClasses support: bug 6214132 caused verification to fail. | |
2070 // All functions from this section should call the jvmtiThreadSate function: | |
2071 // klassOop class_to_verify_considering_redefinition(klassOop klass). | |
2072 // The function returns a klassOop of the _scratch_class if the verifier | |
2073 // was invoked in the middle of the class redefinition. | |
2074 // Otherwise it returns its argument value which is the _the_class klassOop. | |
2075 // Please, refer to the description in the jvmtiThreadSate.hpp. | |
2076 | |
2077 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
2078 JVMWrapper("JVM_GetClassNameUTF"); | |
2079 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2080 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2081 return Klass::cast(k)->name()->as_utf8(); | |
2082 JVM_END | |
2083 | |
2084 | |
2085 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
2086 JVMWrapper("JVM_GetClassCPTypes"); | |
2087 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2088 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2089 // types will have length zero if this is not an instanceKlass | |
2090 // (length is determined by call to JVM_GetClassCPEntriesCount) | |
2091 if (Klass::cast(k)->oop_is_instance()) { | |
2092 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2093 for (int index = cp->length() - 1; index >= 0; index--) { | |
2094 constantTag tag = cp->tag_at(index); | |
2095 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : | |
2096 (tag.is_unresolved_string()) ? JVM_CONSTANT_String : tag.value(); | |
2097 } | |
2098 } | |
2099 JVM_END | |
2100 | |
2101 | |
2102 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
2103 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
2104 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2105 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2106 if (!Klass::cast(k)->oop_is_instance()) | |
2107 return 0; | |
2108 return instanceKlass::cast(k)->constants()->length(); | |
2109 JVM_END | |
2110 | |
2111 | |
2112 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
2113 JVMWrapper("JVM_GetClassFieldsCount"); | |
2114 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2115 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2116 if (!Klass::cast(k)->oop_is_instance()) | |
2117 return 0; | |
3938 | 2118 return instanceKlass::cast(k)->java_fields_count(); |
0 | 2119 JVM_END |
2120 | |
2121 | |
2122 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
2123 JVMWrapper("JVM_GetClassMethodsCount"); | |
2124 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2125 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2126 if (!Klass::cast(k)->oop_is_instance()) | |
2127 return 0; | |
2128 return instanceKlass::cast(k)->methods()->length(); | |
2129 JVM_END | |
2130 | |
2131 | |
2132 // The following methods, used for the verifier, are never called with | |
2133 // array klasses, so a direct cast to instanceKlass is safe. | |
2134 // Typically, these methods are called in a loop with bounds determined | |
2135 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
2136 // zero for arrays. | |
2137 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
2138 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
2139 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2140 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2141 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2142 int length = methodOop(method)->checked_exceptions_length(); | |
2143 if (length > 0) { | |
2144 CheckedExceptionElement* table= methodOop(method)->checked_exceptions_start(); | |
2145 for (int i = 0; i < length; i++) { | |
2146 exceptions[i] = table[i].class_cp_index; | |
2147 } | |
2148 } | |
2149 JVM_END | |
2150 | |
2151 | |
2152 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
2153 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
2154 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2155 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2156 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2157 return methodOop(method)->checked_exceptions_length(); | |
2158 JVM_END | |
2159 | |
2160 | |
2161 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
2162 JVMWrapper("JVM_GetMethodIxByteCode"); | |
2163 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2164 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2165 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2166 memcpy(code, methodOop(method)->code_base(), methodOop(method)->code_size()); | |
2167 JVM_END | |
2168 | |
2169 | |
2170 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
2171 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
2172 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2173 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2174 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2175 return methodOop(method)->code_size(); | |
2176 JVM_END | |
2177 | |
2178 | |
2179 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
2180 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
2181 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2182 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2183 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2184 typeArrayOop extable = methodOop(method)->exception_table(); | |
2185 entry->start_pc = extable->int_at(entry_index * 4); | |
2186 entry->end_pc = extable->int_at(entry_index * 4 + 1); | |
2187 entry->handler_pc = extable->int_at(entry_index * 4 + 2); | |
2188 entry->catchType = extable->int_at(entry_index * 4 + 3); | |
2189 JVM_END | |
2190 | |
2191 | |
2192 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
2193 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
2194 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2195 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2196 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2197 return methodOop(method)->exception_table()->length() / 4; | |
2198 JVM_END | |
2199 | |
2200 | |
2201 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
2202 JVMWrapper("JVM_GetMethodIxModifiers"); | |
2203 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2204 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2205 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2206 return methodOop(method)->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
2207 JVM_END | |
2208 | |
2209 | |
2210 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
2211 JVMWrapper("JVM_GetFieldIxModifiers"); | |
2212 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2213 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
3938 | 2214 return instanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
0 | 2215 JVM_END |
2216 | |
2217 | |
2218 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
2219 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
2220 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2221 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2222 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2223 return methodOop(method)->max_locals(); | |
2224 JVM_END | |
2225 | |
2226 | |
2227 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
2228 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
2229 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2230 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2231 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2232 return methodOop(method)->size_of_parameters(); | |
2233 JVM_END | |
2234 | |
2235 | |
2236 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
2237 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
2238 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2239 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2240 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2241 return methodOop(method)->max_stack(); | |
2242 JVM_END | |
2243 | |
2244 | |
2245 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
2246 JVMWrapper("JVM_IsConstructorIx"); | |
2247 ResourceMark rm(THREAD); | |
2248 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2249 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2250 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2251 return methodOop(method)->name() == vmSymbols::object_initializer_name(); | |
2252 JVM_END | |
2253 | |
2254 | |
2255 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) | |
2256 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
2257 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2258 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2259 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2260 return methodOop(method)->name()->as_utf8(); | |
2261 JVM_END | |
2262 | |
2263 | |
2264 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
2265 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
2266 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2267 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2268 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
2269 return methodOop(method)->signature()->as_utf8(); | |
2270 JVM_END | |
2271 | |
2272 /** | |
2273 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
2274 * read entries in the constant pool. Since the old verifier always | |
2275 * works on a copy of the code, it will not see any rewriting that | |
2276 * may possibly occur in the middle of verification. So it is important | |
2277 * that nothing it calls tries to use the cpCache instead of the raw | |
2278 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
2279 */ | |
2280 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2281 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
2282 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2283 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2284 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2285 switch (cp->tag_at(cp_index).value()) { | |
2286 case JVM_CONSTANT_Fieldref: | |
2287 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
2288 default: | |
2289 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
2290 } | |
2291 ShouldNotReachHere(); | |
2292 return NULL; | |
2293 JVM_END | |
2294 | |
2295 | |
2296 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2297 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
2298 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2299 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2300 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2301 switch (cp->tag_at(cp_index).value()) { | |
2302 case JVM_CONSTANT_InterfaceMethodref: | |
2303 case JVM_CONSTANT_Methodref: | |
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2304 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2305 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
2306 default: | |
2307 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
2308 } | |
2309 ShouldNotReachHere(); | |
2310 return NULL; | |
2311 JVM_END | |
2312 | |
2313 | |
2314 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2315 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
2316 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2317 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2318 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2319 switch (cp->tag_at(cp_index).value()) { | |
2320 case JVM_CONSTANT_InterfaceMethodref: | |
2321 case JVM_CONSTANT_Methodref: | |
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|
2322 case JVM_CONSTANT_NameAndType: // for invokedynamic |
0 | 2323 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
2324 default: | |
2325 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
2326 } | |
2327 ShouldNotReachHere(); | |
2328 return NULL; | |
2329 JVM_END | |
2330 | |
2331 | |
2332 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2333 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
2334 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2335 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2336 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2337 switch (cp->tag_at(cp_index).value()) { | |
2338 case JVM_CONSTANT_Fieldref: | |
2339 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
2340 default: | |
2341 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
2342 } | |
2343 ShouldNotReachHere(); | |
2344 return NULL; | |
2345 JVM_END | |
2346 | |
2347 | |
2348 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2349 JVMWrapper("JVM_GetCPClassNameUTF"); | |
2350 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2351 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2352 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
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2353 Symbol* classname = cp->klass_name_at(cp_index); |
0 | 2354 return classname->as_utf8(); |
2355 JVM_END | |
2356 | |
2357 | |
2358 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2359 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
2360 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2361 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2362 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2363 switch (cp->tag_at(cp_index).value()) { | |
2364 case JVM_CONSTANT_Fieldref: { | |
2365 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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2366 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2367 return classname->as_utf8(); |
2368 } | |
2369 default: | |
2370 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
2371 } | |
2372 ShouldNotReachHere(); | |
2373 return NULL; | |
2374 JVM_END | |
2375 | |
2376 | |
2377 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
2378 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
2379 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2380 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2381 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2382 switch (cp->tag_at(cp_index).value()) { | |
2383 case JVM_CONSTANT_Methodref: | |
2384 case JVM_CONSTANT_InterfaceMethodref: { | |
2385 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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2386 Symbol* classname = cp->klass_name_at(class_index); |
0 | 2387 return classname->as_utf8(); |
2388 } | |
2389 default: | |
2390 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
2391 } | |
2392 ShouldNotReachHere(); | |
2393 return NULL; | |
2394 JVM_END | |
2395 | |
2396 | |
3938 | 2397 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
0 | 2398 JVMWrapper("JVM_GetCPFieldModifiers"); |
2399 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2400 klassOop k_called = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(called_cls)); | |
2401 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2402 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
2403 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2404 constantPoolOop cp_called = instanceKlass::cast(k_called)->constants(); | |
2405 switch (cp->tag_at(cp_index).value()) { | |
2406 case JVM_CONSTANT_Fieldref: { | |
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2407 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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2408 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
3938 | 2409 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
2410 if (fs.name() == name && fs.signature() == signature) { | |
2411 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
0 | 2412 } |
2413 } | |
2414 return -1; | |
2415 } | |
2416 default: | |
2417 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
2418 } | |
2419 ShouldNotReachHere(); | |
2420 return 0; | |
2421 JVM_END | |
2422 | |
2423 | |
2424 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
2425 JVMWrapper("JVM_GetCPMethodModifiers"); | |
2426 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
2427 klassOop k_called = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(called_cls)); | |
2428 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
2429 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
2430 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
2431 switch (cp->tag_at(cp_index).value()) { | |
2432 case JVM_CONSTANT_Methodref: | |
2433 case JVM_CONSTANT_InterfaceMethodref: { | |
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2434 Symbol* name = cp->uncached_name_ref_at(cp_index); |
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2435 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
0 | 2436 objArrayOop methods = instanceKlass::cast(k_called)->methods(); |
2437 int methods_count = methods->length(); | |
2438 for (int i = 0; i < methods_count; i++) { | |
2439 methodOop method = methodOop(methods->obj_at(i)); | |
2440 if (method->name() == name && method->signature() == signature) { | |
2441 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
2442 } | |
2443 } | |
2444 return -1; | |
2445 } | |
2446 default: | |
2447 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
2448 } | |
2449 ShouldNotReachHere(); | |
2450 return 0; | |
2451 JVM_END | |
2452 | |
2453 | |
2454 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
2455 | |
2456 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
2457 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
2458 JVM_END | |
2459 | |
2460 | |
2461 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
2462 JVMWrapper("JVM_IsSameClassPackage"); | |
2463 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
2464 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
2465 klassOop klass1 = java_lang_Class::as_klassOop(class1_mirror); | |
2466 klassOop klass2 = java_lang_Class::as_klassOop(class2_mirror); | |
2467 return (jboolean) Reflection::is_same_class_package(klass1, klass2); | |
2468 JVM_END | |
2469 | |
2470 | |
2471 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
2472 | |
2473 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
2474 JVMWrapper2("JVM_Open (%s)", fname); | |
2475 | |
2476 //%note jvm_r6 | |
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diff
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|
2477 int result = os::open(fname, flags, mode); |
0 | 2478 if (result >= 0) { |
2479 return result; | |
2480 } else { | |
2481 switch(errno) { | |
2482 case EEXIST: | |
2483 return JVM_EEXIST; | |
2484 default: | |
2485 return -1; | |
2486 } | |
2487 } | |
2488 JVM_END | |
2489 | |
2490 | |
2491 JVM_LEAF(jint, JVM_Close(jint fd)) | |
2492 JVMWrapper2("JVM_Close (0x%x)", fd); | |
2493 //%note jvm_r6 | |
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|
2494 return os::close(fd); |
0 | 2495 JVM_END |
2496 | |
2497 | |
2498 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
2499 JVMWrapper2("JVM_Read (0x%x)", fd); | |
2500 | |
2501 //%note jvm_r6 | |
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|
2502 return (jint)os::restartable_read(fd, buf, nbytes); |
0 | 2503 JVM_END |
2504 | |
2505 | |
2506 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
2507 JVMWrapper2("JVM_Write (0x%x)", fd); | |
2508 | |
2509 //%note jvm_r6 | |
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diff
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|
2510 return (jint)os::write(fd, buf, nbytes); |
0 | 2511 JVM_END |
2512 | |
2513 | |
2514 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
2515 JVMWrapper2("JVM_Available (0x%x)", fd); | |
2516 //%note jvm_r6 | |
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|
2517 return os::available(fd, pbytes); |
0 | 2518 JVM_END |
2519 | |
2520 | |
2521 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
2522 JVMWrapper4("JVM_Lseek (0x%x, %Ld, %d)", fd, offset, whence); | |
2523 //%note jvm_r6 | |
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|
2524 return os::lseek(fd, offset, whence); |
0 | 2525 JVM_END |
2526 | |
2527 | |
2528 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
2529 JVMWrapper3("JVM_SetLength (0x%x, %Ld)", fd, length); | |
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|
2530 return os::ftruncate(fd, length); |
0 | 2531 JVM_END |
2532 | |
2533 | |
2534 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
2535 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
2536 //%note jvm_r6 | |
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|
2537 return os::fsync(fd); |
0 | 2538 JVM_END |
2539 | |
2540 | |
2541 // Printing support ////////////////////////////////////////////////// | |
2542 extern "C" { | |
2543 | |
2544 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { | |
2545 // see bug 4399518, 4417214 | |
2546 if ((intptr_t)count <= 0) return -1; | |
2547 return vsnprintf(str, count, fmt, args); | |
2548 } | |
2549 | |
2550 | |
2551 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { | |
2552 va_list args; | |
2553 int len; | |
2554 va_start(args, fmt); | |
2555 len = jio_vsnprintf(str, count, fmt, args); | |
2556 va_end(args); | |
2557 return len; | |
2558 } | |
2559 | |
2560 | |
2561 int jio_fprintf(FILE* f, const char *fmt, ...) { | |
2562 int len; | |
2563 va_list args; | |
2564 va_start(args, fmt); | |
2565 len = jio_vfprintf(f, fmt, args); | |
2566 va_end(args); | |
2567 return len; | |
2568 } | |
2569 | |
2570 | |
2571 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { | |
2572 if (Arguments::vfprintf_hook() != NULL) { | |
2573 return Arguments::vfprintf_hook()(f, fmt, args); | |
2574 } else { | |
2575 return vfprintf(f, fmt, args); | |
2576 } | |
2577 } | |
2578 | |
2579 | |
2191 | 2580 JNIEXPORT int jio_printf(const char *fmt, ...) { |
0 | 2581 int len; |
2582 va_list args; | |
2583 va_start(args, fmt); | |
2584 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
2585 va_end(args); | |
2586 return len; | |
2587 } | |
2588 | |
2589 | |
2590 // HotSpot specific jio method | |
2591 void jio_print(const char* s) { | |
2592 // Try to make this function as atomic as possible. | |
2593 if (Arguments::vfprintf_hook() != NULL) { | |
2594 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
2595 } else { | |
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
431
diff
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|
2596 // Make an unused local variable to avoid warning from gcc 4.x compiler. |
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6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
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diff
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2597 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
0 | 2598 } |
2599 } | |
2600 | |
2601 } // Extern C | |
2602 | |
2603 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
2604 | |
2605 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
2606 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
2607 // OSThread objects. The exception to this rule is when the target object is the thread | |
2608 // doing the operation, in which case we know that the thread won't exit until the | |
2609 // operation is done (all exits being voluntary). There are a few cases where it is | |
2610 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
2611 // you are alive. While these can still happen, they are not subject to deadlocks if | |
2612 // the lock is held while the operation occurs (this is not the case for suspend, for | |
2613 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
2614 // implementation is local to this file, we always lock Threads_lock for that one. | |
2615 | |
2616 static void thread_entry(JavaThread* thread, TRAPS) { | |
2617 HandleMark hm(THREAD); | |
2618 Handle obj(THREAD, thread->threadObj()); | |
2619 JavaValue result(T_VOID); | |
2620 JavaCalls::call_virtual(&result, | |
2621 obj, | |
1142 | 2622 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
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2623 vmSymbols::run_method_name(), |
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6990754: Use native memory and reference counting to implement SymbolTable
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|
2624 vmSymbols::void_method_signature(), |
0 | 2625 THREAD); |
2626 } | |
2627 | |
2628 | |
2629 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
2630 JVMWrapper("JVM_StartThread"); | |
2631 JavaThread *native_thread = NULL; | |
2632 | |
2633 // We cannot hold the Threads_lock when we throw an exception, | |
2634 // due to rank ordering issues. Example: we might need to grab the | |
2635 // Heap_lock while we construct the exception. | |
2636 bool throw_illegal_thread_state = false; | |
2637 | |
2638 // We must release the Threads_lock before we can post a jvmti event | |
2639 // in Thread::start. | |
2640 { | |
2641 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
2642 // we operate. | |
2643 MutexLocker mu(Threads_lock); | |
2644 | |
2162
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diff
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|
2645 // Since JDK 5 the java.lang.Thread threadStatus is used to prevent |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2646 // re-starting an already started thread, so we should usually find |
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diff
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|
2647 // that the JavaThread is null. However for a JNI attached thread |
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2648 // there is a small window between the Thread object being created |
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
changeset
|
2649 // (with its JavaThread set) and the update to its threadStatus, so we |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
changeset
|
2650 // have to check for this |
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
changeset
|
2651 if (java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)) != NULL) { |
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
changeset
|
2652 throw_illegal_thread_state = true; |
0 | 2653 } else { |
2162
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diff
changeset
|
2654 // We could also check the stillborn flag to see if this thread was already stopped, but |
ccfcb502af3f
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dholmes
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diff
changeset
|
2655 // for historical reasons we let the thread detect that itself when it starts running |
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diff
changeset
|
2656 |
0 | 2657 jlong size = |
2658 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
2659 // Allocate the C++ Thread structure and create the native thread. The | |
2660 // stack size retrieved from java is signed, but the constructor takes | |
2661 // size_t (an unsigned type), so avoid passing negative values which would | |
2662 // result in really large stacks. | |
2663 size_t sz = size > 0 ? (size_t) size : 0; | |
2664 native_thread = new JavaThread(&thread_entry, sz); | |
2665 | |
2666 // At this point it may be possible that no osthread was created for the | |
2667 // JavaThread due to lack of memory. Check for this situation and throw | |
2668 // an exception if necessary. Eventually we may want to change this so | |
2669 // that we only grab the lock if the thread was created successfully - | |
2670 // then we can also do this check and throw the exception in the | |
2671 // JavaThread constructor. | |
2672 if (native_thread->osthread() != NULL) { | |
2673 // Note: the current thread is not being used within "prepare". | |
2674 native_thread->prepare(jthread); | |
2675 } | |
2676 } | |
2677 } | |
2678 | |
2679 if (throw_illegal_thread_state) { | |
2680 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
2681 } | |
2682 | |
2683 assert(native_thread != NULL, "Starting null thread?"); | |
2684 | |
2685 if (native_thread->osthread() == NULL) { | |
2686 // No one should hold a reference to the 'native_thread'. | |
2687 delete native_thread; | |
2688 if (JvmtiExport::should_post_resource_exhausted()) { | |
2689 JvmtiExport::post_resource_exhausted( | |
2690 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
2691 "unable to create new native thread"); | |
2692 } | |
2693 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
2694 "unable to create new native thread"); | |
2695 } | |
2696 | |
2697 Thread::start(native_thread); | |
2698 | |
2699 JVM_END | |
2700 | |
2701 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
2702 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
2703 // but is thought to be reliable and simple. In the case, where the receiver is the | |
2162
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dholmes
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diff
changeset
|
2704 // same thread as the sender, no safepoint is needed. |
0 | 2705 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
2706 JVMWrapper("JVM_StopThread"); | |
2707 | |
2708 oop java_throwable = JNIHandles::resolve(throwable); | |
2709 if (java_throwable == NULL) { | |
2710 THROW(vmSymbols::java_lang_NullPointerException()); | |
2711 } | |
2712 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2713 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
2714 Events::log("JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", receiver, (address)java_thread, throwable); | |
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
changeset
|
2715 // First check if thread is alive |
0 | 2716 if (receiver != NULL) { |
2717 // Check if exception is getting thrown at self (use oop equality, since the | |
2718 // target object might exit) | |
2719 if (java_thread == thread->threadObj()) { | |
2720 THROW_OOP(java_throwable); | |
2721 } else { | |
2722 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
2723 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
2724 } | |
2725 } | |
2162
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
changeset
|
2726 else { |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
changeset
|
2727 // Either: |
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
changeset
|
2728 // - target thread has not been started before being stopped, or |
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|
2729 // - target thread already terminated |
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|
2730 // We could read the threadStatus to determine which case it is |
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diff
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|
2731 // but that is overkill as it doesn't matter. We must set the |
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|
2732 // stillborn flag for the first case, and if the thread has already |
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diff
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|
2733 // exited setting this flag has no affect |
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|
2734 java_lang_Thread::set_stillborn(java_thread); |
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|
2735 } |
0 | 2736 JVM_END |
2737 | |
2738 | |
2739 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
2740 JVMWrapper("JVM_IsThreadAlive"); | |
2741 | |
2742 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
2743 return java_lang_Thread::is_alive(thread_oop); | |
2744 JVM_END | |
2745 | |
2746 | |
2747 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
2748 JVMWrapper("JVM_SuspendThread"); | |
2749 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2750 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
2751 | |
2752 if (receiver != NULL) { | |
2753 // thread has run and has not exited (still on threads list) | |
2754 | |
2755 { | |
2756 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
2757 if (receiver->is_external_suspend()) { | |
2758 // Don't allow nested external suspend requests. We can't return | |
2759 // an error from this interface so just ignore the problem. | |
2760 return; | |
2761 } | |
2762 if (receiver->is_exiting()) { // thread is in the process of exiting | |
2763 return; | |
2764 } | |
2765 receiver->set_external_suspend(); | |
2766 } | |
2767 | |
2768 // java_suspend() will catch threads in the process of exiting | |
2769 // and will ignore them. | |
2770 receiver->java_suspend(); | |
2771 | |
2772 // It would be nice to have the following assertion in all the | |
2773 // time, but it is possible for a racing resume request to have | |
2774 // resumed this thread right after we suspended it. Temporarily | |
2775 // enable this assertion if you are chasing a different kind of | |
2776 // bug. | |
2777 // | |
2778 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
2779 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
2780 } | |
2781 JVM_END | |
2782 | |
2783 | |
2784 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
2785 JVMWrapper("JVM_ResumeThread"); | |
2786 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
2787 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
2788 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
2789 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
2790 // looks at it. | |
2791 MutexLocker ml(Threads_lock); | |
2792 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
2793 if (thr != NULL) { | |
2794 // the thread has run and is not in the process of exiting | |
2795 thr->java_resume(); | |
2796 } | |
2797 JVM_END | |
2798 | |
2799 | |
2800 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
2801 JVMWrapper("JVM_SetThreadPriority"); | |
2802 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
2803 MutexLocker ml(Threads_lock); | |
2804 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2805 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
2806 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
2807 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
2808 Thread::set_priority(thr, (ThreadPriority)prio); | |
2809 } | |
2810 JVM_END | |
2811 | |
2812 | |
2813 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
2814 JVMWrapper("JVM_Yield"); | |
2815 if (os::dont_yield()) return; | |
1324
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2816 HS_DTRACE_PROBE0(hotspot, thread__yield); |
0 | 2817 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
2818 // Critical for similar threading behaviour | |
2819 if (ConvertYieldToSleep) { | |
2820 os::sleep(thread, MinSleepInterval, false); | |
2821 } else { | |
2822 os::yield(); | |
2823 } | |
2824 JVM_END | |
2825 | |
2826 | |
2827 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
2828 JVMWrapper("JVM_Sleep"); | |
2829 | |
2830 if (millis < 0) { | |
2831 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
2832 } | |
2833 | |
2834 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
2835 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
2836 } | |
2837 | |
2838 // Save current thread state and restore it at the end of this block. | |
2839 // And set new thread state to SLEEPING. | |
2840 JavaThreadSleepState jtss(thread); | |
2841 | |
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|
2842 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); |
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|
2843 |
0 | 2844 if (millis == 0) { |
2845 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
2846 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
2847 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
2848 // for SOLARIS | |
2849 if (ConvertSleepToYield) { | |
2850 os::yield(); | |
2851 } else { | |
2852 ThreadState old_state = thread->osthread()->get_state(); | |
2853 thread->osthread()->set_state(SLEEPING); | |
2854 os::sleep(thread, MinSleepInterval, false); | |
2855 thread->osthread()->set_state(old_state); | |
2856 } | |
2857 } else { | |
2858 ThreadState old_state = thread->osthread()->get_state(); | |
2859 thread->osthread()->set_state(SLEEPING); | |
2860 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
2861 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
2862 // us while we were sleeping. We do not overwrite those. | |
2863 if (!HAS_PENDING_EXCEPTION) { | |
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diff
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|
2864 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); |
0 | 2865 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
2866 // to properly restore the thread state. That's likely wrong. | |
2867 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
2868 } | |
2869 } | |
2870 thread->osthread()->set_state(old_state); | |
2871 } | |
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|
2872 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); |
0 | 2873 JVM_END |
2874 | |
2875 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
2876 JVMWrapper("JVM_CurrentThread"); | |
2877 oop jthread = thread->threadObj(); | |
2878 assert (thread != NULL, "no current thread!"); | |
2879 return JNIHandles::make_local(env, jthread); | |
2880 JVM_END | |
2881 | |
2882 | |
2883 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
2884 JVMWrapper("JVM_CountStackFrames"); | |
2885 | |
2886 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
2887 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2888 bool throw_illegal_thread_state = false; | |
2889 int count = 0; | |
2890 | |
2891 { | |
2892 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
2893 // We need to re-resolve the java_thread, since a GC might have happened during the | |
2894 // acquire of the lock | |
2895 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
2896 | |
2897 if (thr == NULL) { | |
2898 // do nothing | |
2899 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
2900 // Check whether this java thread has been suspended already. If not, throws | |
2901 // IllegalThreadStateException. We defer to throw that exception until | |
2902 // Threads_lock is released since loading exception class has to leave VM. | |
2903 // The correct way to test a thread is actually suspended is | |
2904 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
2905 // the Threads_lock. The above tests are sufficient for our purposes | |
2906 // provided the walkability of the stack is stable - which it isn't | |
2907 // 100% but close enough for most practical purposes. | |
2908 throw_illegal_thread_state = true; | |
2909 } else { | |
2910 // Count all java activation, i.e., number of vframes | |
2911 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
2912 // Native frames are not counted | |
2913 if (!vfst.method()->is_native()) count++; | |
2914 } | |
2915 } | |
2916 } | |
2917 | |
2918 if (throw_illegal_thread_state) { | |
2919 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
2920 "this thread is not suspended"); | |
2921 } | |
2922 return count; | |
2923 JVM_END | |
2924 | |
2925 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
2926 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
2927 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
2928 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
2929 // outside the critical section. Threads_lock is hot so we want to minimize | |
2930 // the hold-time. A cleaner interface would be to decompose interrupt into | |
2931 // two steps. The 1st phase, performed under Threads_lock, would return | |
2932 // a closure that'd be invoked after Threads_lock was dropped. | |
2933 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
2934 // admit spurious wakeups. | |
2935 | |
2936 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
2937 JVMWrapper("JVM_Interrupt"); | |
2938 | |
2939 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
2940 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2941 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
2942 // We need to re-resolve the java_thread, since a GC might have happened during the | |
2943 // acquire of the lock | |
2944 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
2945 if (thr != NULL) { | |
2946 Thread::interrupt(thr); | |
2947 } | |
2948 JVM_END | |
2949 | |
2950 | |
2951 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
2952 JVMWrapper("JVM_IsInterrupted"); | |
2953 | |
2954 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
2955 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
2956 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
2957 // We need to re-resolve the java_thread, since a GC might have happened during the | |
2958 // acquire of the lock | |
2959 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
2960 if (thr == NULL) { | |
2961 return JNI_FALSE; | |
2962 } else { | |
2963 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
2964 } | |
2965 JVM_END | |
2966 | |
2967 | |
2968 // Return true iff the current thread has locked the object passed in | |
2969 | |
2970 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
2971 JVMWrapper("JVM_HoldsLock"); | |
2972 assert(THREAD->is_Java_thread(), "sanity check"); | |
2973 if (obj == NULL) { | |
2974 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
2975 } | |
2976 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
2977 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
2978 JVM_END | |
2979 | |
2980 | |
2981 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
2982 JVMWrapper("JVM_DumpAllStacks"); | |
2983 VM_PrintThreads op; | |
2984 VMThread::execute(&op); | |
2985 if (JvmtiExport::should_post_data_dump()) { | |
2986 JvmtiExport::post_data_dump(); | |
2987 } | |
2988 JVM_END | |
2989 | |
2990 | |
2991 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
2992 | |
2993 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
2994 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
2995 if (jthread->privileged_stack_top() == NULL) return false; | |
2996 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
2997 oop loader = jthread->privileged_stack_top()->class_loader(); | |
2998 if (loader == NULL) return true; | |
2999 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
3000 if (trusted) return true; | |
3001 } | |
3002 return false; | |
3003 } | |
3004 | |
3005 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
3006 JVMWrapper("JVM_CurrentLoadedClass"); | |
3007 ResourceMark rm(THREAD); | |
3008 | |
3009 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3010 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3011 bool trusted = is_trusted_frame(thread, &vfst); | |
3012 if (trusted) return NULL; | |
3013 | |
3014 methodOop m = vfst.method(); | |
3015 if (!m->is_native()) { | |
3016 klassOop holder = m->method_holder(); | |
3017 oop loader = instanceKlass::cast(holder)->class_loader(); | |
3018 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { | |
3019 return (jclass) JNIHandles::make_local(env, Klass::cast(holder)->java_mirror()); | |
3020 } | |
3021 } | |
3022 } | |
3023 return NULL; | |
3024 JVM_END | |
3025 | |
3026 | |
3027 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
3028 JVMWrapper("JVM_CurrentClassLoader"); | |
3029 ResourceMark rm(THREAD); | |
3030 | |
3031 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3032 | |
3033 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
3034 bool trusted = is_trusted_frame(thread, &vfst); | |
3035 if (trusted) return NULL; | |
3036 | |
3037 methodOop m = vfst.method(); | |
3038 if (!m->is_native()) { | |
3039 klassOop holder = m->method_holder(); | |
3040 assert(holder->is_klass(), "just checking"); | |
3041 oop loader = instanceKlass::cast(holder)->class_loader(); | |
3042 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { | |
3043 return JNIHandles::make_local(env, loader); | |
3044 } | |
3045 } | |
3046 } | |
3047 return NULL; | |
3048 JVM_END | |
3049 | |
3050 | |
3051 // Utility object for collecting method holders walking down the stack | |
3052 class KlassLink: public ResourceObj { | |
3053 public: | |
3054 KlassHandle klass; | |
3055 KlassLink* next; | |
3056 | |
3057 KlassLink(KlassHandle k) { klass = k; next = NULL; } | |
3058 }; | |
3059 | |
3060 | |
3061 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
3062 JVMWrapper("JVM_GetClassContext"); | |
3063 ResourceMark rm(THREAD); | |
3064 JvmtiVMObjectAllocEventCollector oam; | |
3065 // Collect linked list of (handles to) method holders | |
3066 KlassLink* first = NULL; | |
3067 KlassLink* last = NULL; | |
3068 int depth = 0; | |
3069 | |
3070 for(vframeStream vfst(thread); !vfst.at_end(); vfst.security_get_caller_frame(1)) { | |
3071 // Native frames are not returned | |
3072 if (!vfst.method()->is_native()) { | |
3073 klassOop holder = vfst.method()->method_holder(); | |
3074 assert(holder->is_klass(), "just checking"); | |
3075 depth++; | |
3076 KlassLink* l = new KlassLink(KlassHandle(thread, holder)); | |
3077 if (first == NULL) { | |
3078 first = last = l; | |
3079 } else { | |
3080 last->next = l; | |
3081 last = l; | |
3082 } | |
3083 } | |
3084 } | |
3085 | |
3086 // Create result array of type [Ljava/lang/Class; | |
1142 | 3087 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), depth, CHECK_NULL); |
0 | 3088 // Fill in mirrors corresponding to method holders |
3089 int index = 0; | |
3090 while (first != NULL) { | |
3091 result->obj_at_put(index++, Klass::cast(first->klass())->java_mirror()); | |
3092 first = first->next; | |
3093 } | |
3094 assert(index == depth, "just checking"); | |
3095 | |
3096 return (jobjectArray) JNIHandles::make_local(env, result); | |
3097 JVM_END | |
3098 | |
3099 | |
3100 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
3101 JVMWrapper("JVM_ClassDepth"); | |
3102 ResourceMark rm(THREAD); | |
3103 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
3104 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
3105 | |
3106 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
2177
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2162
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|
3107 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
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|
3108 if (class_name_sym == NULL) { |
0 | 3109 return -1; |
3110 } | |
3111 | |
3112 int depth = 0; | |
3113 | |
3114 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3115 if (!vfst.method()->is_native()) { | |
3116 klassOop holder = vfst.method()->method_holder(); | |
3117 assert(holder->is_klass(), "just checking"); | |
2177
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|
3118 if (instanceKlass::cast(holder)->name() == class_name_sym) { |
0 | 3119 return depth; |
3120 } | |
3121 depth++; | |
3122 } | |
3123 } | |
3124 return -1; | |
3125 JVM_END | |
3126 | |
3127 | |
3128 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
3129 JVMWrapper("JVM_ClassLoaderDepth"); | |
3130 ResourceMark rm(THREAD); | |
3131 int depth = 0; | |
3132 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3133 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
3134 bool trusted = is_trusted_frame(thread, &vfst); | |
3135 if (trusted) return -1; | |
3136 | |
3137 methodOop m = vfst.method(); | |
3138 if (!m->is_native()) { | |
3139 klassOop holder = m->method_holder(); | |
3140 assert(holder->is_klass(), "just checking"); | |
3141 oop loader = instanceKlass::cast(holder)->class_loader(); | |
3142 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { | |
3143 return depth; | |
3144 } | |
3145 depth++; | |
3146 } | |
3147 } | |
3148 return -1; | |
3149 JVM_END | |
3150 | |
3151 | |
3152 // java.lang.Package //////////////////////////////////////////////////////////////// | |
3153 | |
3154 | |
3155 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
3156 JVMWrapper("JVM_GetSystemPackage"); | |
3157 ResourceMark rm(THREAD); | |
3158 JvmtiVMObjectAllocEventCollector oam; | |
3159 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
3160 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
3161 return (jstring) JNIHandles::make_local(result); | |
3162 JVM_END | |
3163 | |
3164 | |
3165 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
3166 JVMWrapper("JVM_GetSystemPackages"); | |
3167 JvmtiVMObjectAllocEventCollector oam; | |
3168 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
3169 return (jobjectArray) JNIHandles::make_local(result); | |
3170 JVM_END | |
3171 | |
3172 | |
3173 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
3174 | |
3175 bool force_verify_field_access(klassOop current_class, klassOop field_class, AccessFlags access, bool classloader_only) { | |
3176 if (current_class == NULL) { | |
3177 return true; | |
3178 } | |
3179 if ((current_class == field_class) || access.is_public()) { | |
3180 return true; | |
3181 } | |
3182 | |
3183 if (access.is_protected()) { | |
3184 // See if current_class is a subclass of field_class | |
3185 if (Klass::cast(current_class)->is_subclass_of(field_class)) { | |
3186 return true; | |
3187 } | |
3188 } | |
3189 | |
3190 return (!access.is_private() && instanceKlass::cast(current_class)->is_same_class_package(field_class)); | |
3191 } | |
3192 | |
3193 | |
3194 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
3195 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
3196 JVMWrapper("JVM_AllocateNewObject"); | |
3197 JvmtiVMObjectAllocEventCollector oam; | |
3198 // Receiver is not used | |
3199 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
3200 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
3201 | |
3202 // Cannot instantiate primitive types | |
3203 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
3204 ResourceMark rm(THREAD); | |
3205 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3206 } | |
3207 | |
3208 // Arrays not allowed here, must use JVM_AllocateNewArray | |
3209 if (Klass::cast(java_lang_Class::as_klassOop(curr_mirror))->oop_is_javaArray() || | |
3210 Klass::cast(java_lang_Class::as_klassOop(init_mirror))->oop_is_javaArray()) { | |
3211 ResourceMark rm(THREAD); | |
3212 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3213 } | |
3214 | |
3215 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_klassOop(curr_mirror)); | |
3216 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_klassOop(init_mirror)); | |
3217 | |
3218 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
3219 | |
3220 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
3221 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
3222 | |
3223 // Make sure klass is initialized, since we are about to instantiate one of them. | |
3224 curr_klass->initialize(CHECK_NULL); | |
3225 | |
3226 methodHandle m (THREAD, | |
3227 init_klass->find_method(vmSymbols::object_initializer_name(), | |
3228 vmSymbols::void_method_signature())); | |
3229 if (m.is_null()) { | |
3230 ResourceMark rm(THREAD); | |
3231 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
3232 methodOopDesc::name_and_sig_as_C_string(Klass::cast(init_klass()), | |
3233 vmSymbols::object_initializer_name(), | |
3234 vmSymbols::void_method_signature())); | |
3235 } | |
3236 | |
3237 if (curr_klass == init_klass && !m->is_public()) { | |
3238 // Calling the constructor for class 'curr_klass'. | |
3239 // Only allow calls to a public no-arg constructor. | |
3240 // This path corresponds to creating an Externalizable object. | |
3241 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3242 } | |
3243 | |
3244 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
3245 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
3246 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
3247 } | |
3248 | |
3249 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
3250 // Call constructor m. This might call a constructor higher up in the hierachy | |
3251 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
3252 | |
3253 return JNIHandles::make_local(obj()); | |
3254 JVM_END | |
3255 | |
3256 | |
3257 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
3258 JVMWrapper("JVM_AllocateNewArray"); | |
3259 JvmtiVMObjectAllocEventCollector oam; | |
3260 oop mirror = JNIHandles::resolve_non_null(currClass); | |
3261 | |
3262 if (java_lang_Class::is_primitive(mirror)) { | |
3263 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3264 } | |
3265 klassOop k = java_lang_Class::as_klassOop(mirror); | |
3266 oop result; | |
3267 | |
3268 if (k->klass_part()->oop_is_typeArray()) { | |
3269 // typeArray | |
3270 result = typeArrayKlass::cast(k)->allocate(length, CHECK_NULL); | |
3271 } else if (k->klass_part()->oop_is_objArray()) { | |
3272 // objArray | |
3273 objArrayKlassHandle oak(THREAD, k); | |
3274 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) | |
3275 result = oak->allocate(length, CHECK_NULL); | |
3276 } else { | |
3277 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
3278 } | |
3279 return JNIHandles::make_local(env, result); | |
3280 JVM_END | |
3281 | |
3282 | |
3283 // Return the first non-null class loader up the execution stack, or null | |
3284 // if only code from the null class loader is on the stack. | |
3285 | |
3286 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
3287 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
3288 // UseNewReflection | |
3289 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
3290 klassOop holder = vfst.method()->method_holder(); | |
3291 oop loader = instanceKlass::cast(holder)->class_loader(); | |
3292 if (loader != NULL) { | |
3293 return JNIHandles::make_local(env, loader); | |
3294 } | |
3295 } | |
3296 return NULL; | |
3297 JVM_END | |
3298 | |
3299 | |
3300 // Load a class relative to the most recent class on the stack with a non-null | |
3301 // classloader. | |
3302 // This function has been deprecated and should not be considered part of the | |
3303 // specified JVM interface. | |
3304 | |
3305 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
3306 jclass currClass, jstring currClassName)) | |
3307 JVMWrapper("JVM_LoadClass0"); | |
3308 // Receiver is not used | |
3309 ResourceMark rm(THREAD); | |
3310 | |
3311 // Class name argument is not guaranteed to be in internal format | |
3312 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
3313 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
3314 | |
3315 const char* str = java_lang_String::as_utf8_string(string()); | |
3316 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
3317 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
0 | 3318 // It's impossible to create this class; the name cannot fit |
3319 // into the constant pool. | |
3320 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
3321 } | |
3322 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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diff
changeset
|
3323 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
0 | 3324 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
3325 // Find the most recent class on the stack with a non-null classloader | |
3326 oop loader = NULL; | |
3327 oop protection_domain = NULL; | |
3328 if (curr_klass.is_null()) { | |
3329 for (vframeStream vfst(thread); | |
3330 !vfst.at_end() && loader == NULL; | |
3331 vfst.next()) { | |
3332 if (!vfst.method()->is_native()) { | |
3333 klassOop holder = vfst.method()->method_holder(); | |
3334 loader = instanceKlass::cast(holder)->class_loader(); | |
3335 protection_domain = instanceKlass::cast(holder)->protection_domain(); | |
3336 } | |
3337 } | |
3338 } else { | |
3339 klassOop curr_klass_oop = java_lang_Class::as_klassOop(curr_klass()); | |
3340 loader = instanceKlass::cast(curr_klass_oop)->class_loader(); | |
3341 protection_domain = instanceKlass::cast(curr_klass_oop)->protection_domain(); | |
3342 } | |
3343 Handle h_loader(THREAD, loader); | |
3344 Handle h_prot (THREAD, protection_domain); | |
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3345 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
|
3346 false, thread); |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3347 if (TraceClassResolution && result != NULL) { |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3348 trace_class_resolution(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(result))); |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3349 } |
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3350 return result; |
0 | 3351 JVM_END |
3352 | |
3353 | |
3354 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
3355 | |
3356 | |
3357 // resolve array handle and check arguments | |
3358 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
3359 if (arr == NULL) { | |
3360 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
3361 } | |
3362 oop a = JNIHandles::resolve_non_null(arr); | |
3363 if (!a->is_javaArray() || (type_array_only && !a->is_typeArray())) { | |
3364 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); | |
3365 } | |
3366 return arrayOop(a); | |
3367 } | |
3368 | |
3369 | |
3370 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
3371 JVMWrapper("JVM_GetArrayLength"); | |
3372 arrayOop a = check_array(env, arr, false, CHECK_0); | |
3373 return a->length(); | |
3374 JVM_END | |
3375 | |
3376 | |
3377 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
3378 JVMWrapper("JVM_Array_Get"); | |
3379 JvmtiVMObjectAllocEventCollector oam; | |
3380 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
3381 jvalue value; | |
3382 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
3383 oop box = Reflection::box(&value, type, CHECK_NULL); | |
3384 return JNIHandles::make_local(env, box); | |
3385 JVM_END | |
3386 | |
3387 | |
3388 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
3389 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
3390 jvalue value; | |
3391 value.i = 0; // to initialize value before getting used in CHECK | |
3392 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
3393 assert(a->is_typeArray(), "just checking"); | |
3394 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
3395 BasicType wide_type = (BasicType) wCode; | |
3396 if (type != wide_type) { | |
3397 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
3398 } | |
3399 return value; | |
3400 JVM_END | |
3401 | |
3402 | |
3403 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
3404 JVMWrapper("JVM_SetArrayElement"); | |
3405 arrayOop a = check_array(env, arr, false, CHECK); | |
3406 oop box = JNIHandles::resolve(val); | |
3407 jvalue value; | |
3408 value.i = 0; // to initialize value before getting used in CHECK | |
3409 BasicType value_type; | |
3410 if (a->is_objArray()) { | |
3411 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
3412 value_type = Reflection::unbox_for_regular_object(box, &value); | |
3413 } else { | |
3414 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
3415 } | |
3416 Reflection::array_set(&value, a, index, value_type, CHECK); | |
3417 JVM_END | |
3418 | |
3419 | |
3420 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
3421 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
3422 arrayOop a = check_array(env, arr, true, CHECK); | |
3423 assert(a->is_typeArray(), "just checking"); | |
3424 BasicType value_type = (BasicType) vCode; | |
3425 Reflection::array_set(&v, a, index, value_type, CHECK); | |
3426 JVM_END | |
3427 | |
3428 | |
3429 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
3430 JVMWrapper("JVM_NewArray"); | |
3431 JvmtiVMObjectAllocEventCollector oam; | |
3432 oop element_mirror = JNIHandles::resolve(eltClass); | |
3433 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
3434 return JNIHandles::make_local(env, result); | |
3435 JVM_END | |
3436 | |
3437 | |
3438 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
3439 JVMWrapper("JVM_NewMultiArray"); | |
3440 JvmtiVMObjectAllocEventCollector oam; | |
3441 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
3442 oop element_mirror = JNIHandles::resolve(eltClass); | |
3443 assert(dim_array->is_typeArray(), "just checking"); | |
3444 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
3445 return JNIHandles::make_local(env, result); | |
3446 JVM_END | |
3447 | |
3448 | |
3449 // Networking library support //////////////////////////////////////////////////////////////////// | |
3450 | |
3451 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
3452 JVMWrapper("JVM_InitializeSocketLibrary"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3453 return 0; |
0 | 3454 JVM_END |
3455 | |
3456 | |
3457 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
3458 JVMWrapper("JVM_Socket"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3459 return os::socket(domain, type, protocol); |
0 | 3460 JVM_END |
3461 | |
3462 | |
3463 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
3464 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
3465 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3466 return os::socket_close(fd); |
0 | 3467 JVM_END |
3468 | |
3469 | |
3470 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
3471 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
3472 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3473 return os::socket_shutdown(fd, howto); |
0 | 3474 JVM_END |
3475 | |
3476 | |
3477 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
3478 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
3479 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3480 return os::recv(fd, buf, nBytes, flags); |
0 | 3481 JVM_END |
3482 | |
3483 | |
3484 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
3485 JVMWrapper2("JVM_Send (0x%x)", fd); | |
3486 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3487 return os::send(fd, buf, nBytes, flags); |
0 | 3488 JVM_END |
3489 | |
3490 | |
3491 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
3492 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
3493 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3494 return os::timeout(fd, timeout); |
0 | 3495 JVM_END |
3496 | |
3497 | |
3498 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
3499 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
3500 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3501 return os::listen(fd, count); |
0 | 3502 JVM_END |
3503 | |
3504 | |
3505 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
3506 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
3507 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3508 return os::connect(fd, him, len); |
0 | 3509 JVM_END |
3510 | |
3511 | |
3512 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
3513 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
3514 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3515 return os::bind(fd, him, len); |
0 | 3516 JVM_END |
3517 | |
3518 | |
3519 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
3520 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
3521 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3522 return os::accept(fd, him, (int *)len); |
0 | 3523 JVM_END |
3524 | |
3525 | |
3526 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
3527 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
3528 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3529 return os::recvfrom(fd, buf, nBytes, flags, from, fromlen); |
0 | 3530 JVM_END |
3531 | |
3532 | |
3533 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
3534 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
3535 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3536 return os::get_sock_name(fd, him, len); |
0 | 3537 JVM_END |
3538 | |
3539 | |
3540 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
3541 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
3542 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3543 return os::sendto(fd, buf, len, flags, to, tolen); |
0 | 3544 JVM_END |
3545 | |
3546 | |
3547 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
3548 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
3549 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3550 return os::socket_available(fd, pbytes); |
0 | 3551 JVM_END |
3552 | |
3553 | |
3554 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
3555 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3556 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3557 return os::get_sock_opt(fd, level, optname, optval, optlen); |
0 | 3558 JVM_END |
3559 | |
3560 | |
3561 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
3562 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
3563 //%note jvm_r6 | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3564 return os::set_sock_opt(fd, level, optname, optval, optlen); |
0 | 3565 JVM_END |
3566 | |
3567 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) | |
3568 JVMWrapper("JVM_GetHostName"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3569 return os::get_host_name(name, namelen); |
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3570 JVM_END |
0 | 3571 |
3572 // Library support /////////////////////////////////////////////////////////////////////////// | |
3573 | |
3574 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
3575 //%note jvm_ct | |
3576 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
3577 char ebuf[1024]; | |
3578 void *load_result; | |
3579 { | |
3580 ThreadToNativeFromVM ttnfvm(thread); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3581 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
0 | 3582 } |
3583 if (load_result == NULL) { | |
3584 char msg[1024]; | |
3585 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
3586 // Since 'ebuf' may contain a string encoded using | |
3587 // platform encoding scheme, we need to pass | |
3588 // Exceptions::unsafe_to_utf8 to the new_exception method | |
3589 // as the last argument. See bug 6367357. | |
3590 Handle h_exception = | |
3591 Exceptions::new_exception(thread, | |
3592 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
3593 msg, Exceptions::unsafe_to_utf8); | |
3594 | |
3595 THROW_HANDLE_0(h_exception); | |
3596 } | |
3597 return load_result; | |
3598 JVM_END | |
3599 | |
3600 | |
3601 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
3602 JVMWrapper("JVM_UnloadLibrary"); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3603 os::dll_unload(handle); |
0 | 3604 JVM_END |
3605 | |
3606 | |
3607 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
3608 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3609 return os::dll_lookup(handle, name); |
0 | 3610 JVM_END |
3611 | |
3612 // Floating point support //////////////////////////////////////////////////////////////////// | |
3613 | |
3614 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
3615 JVMWrapper("JVM_IsNaN"); | |
3616 return g_isnan(a); | |
3617 JVM_END | |
3618 | |
3619 | |
3620 | |
3621 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
3622 | |
3623 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
3624 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
3625 return Threads::is_supported_jni_version_including_1_1(version); | |
3626 JVM_END | |
3627 | |
3628 | |
3629 // String support /////////////////////////////////////////////////////////////////////////// | |
3630 | |
3631 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
3632 JVMWrapper("JVM_InternString"); | |
3633 JvmtiVMObjectAllocEventCollector oam; | |
3634 if (str == NULL) return NULL; | |
3635 oop string = JNIHandles::resolve_non_null(str); | |
3636 oop result = StringTable::intern(string, CHECK_NULL); | |
3637 return (jstring) JNIHandles::make_local(env, result); | |
3638 JVM_END | |
3639 | |
3640 | |
3641 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
3642 | |
3643 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
3644 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
3645 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
3646 // that only works with java threads. | |
3647 | |
3648 | |
3649 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
3650 VM_Exit::block_if_vm_exited(); | |
3651 JVMWrapper("JVM_RawMonitorCreate"); | |
3652 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
3653 } | |
3654 | |
3655 | |
3656 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
3657 VM_Exit::block_if_vm_exited(); | |
3658 JVMWrapper("JVM_RawMonitorDestroy"); | |
3659 delete ((Mutex*) mon); | |
3660 } | |
3661 | |
3662 | |
3663 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
3664 VM_Exit::block_if_vm_exited(); | |
3665 JVMWrapper("JVM_RawMonitorEnter"); | |
3666 ((Mutex*) mon)->jvm_raw_lock(); | |
3667 return 0; | |
3668 } | |
3669 | |
3670 | |
3671 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
3672 VM_Exit::block_if_vm_exited(); | |
3673 JVMWrapper("JVM_RawMonitorExit"); | |
3674 ((Mutex*) mon)->jvm_raw_unlock(); | |
3675 } | |
3676 | |
3677 | |
3678 // Support for Serialization | |
3679 | |
3680 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
3681 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
3682 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
3683 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
3684 | |
3685 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
3686 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
3687 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
3688 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
3689 | |
3690 | |
3691 void initialize_converter_functions() { | |
3692 if (JDK_Version::is_gte_jdk14x_version()) { | |
3693 // These functions only exist for compatibility with 1.3.1 and earlier | |
3694 return; | |
3695 } | |
3696 | |
3697 // called from universe_post_init() | |
3698 assert( | |
3699 int_bits_to_float_fn == NULL && | |
3700 long_bits_to_double_fn == NULL && | |
3701 float_to_int_bits_fn == NULL && | |
3702 double_to_long_bits_fn == NULL , | |
3703 "initialization done twice" | |
3704 ); | |
3705 // initialize | |
3706 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
3707 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
3708 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
3709 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
3710 // verify | |
3711 assert( | |
3712 int_bits_to_float_fn != NULL && | |
3713 long_bits_to_double_fn != NULL && | |
3714 float_to_int_bits_fn != NULL && | |
3715 double_to_long_bits_fn != NULL , | |
3716 "initialization failed" | |
3717 ); | |
3718 } | |
3719 | |
3720 | |
3721 // Serialization | |
3722 JVM_ENTRY(void, JVM_SetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
3723 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
3724 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
3725 | |
3726 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
3727 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
3728 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
3729 oop o = JNIHandles::resolve(obj); | |
3730 | |
3731 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
3732 THROW(vmSymbols::java_lang_NullPointerException()); | |
3733 } | |
3734 | |
3735 jsize nfids = fids->length(); | |
3736 if (nfids == 0) return; | |
3737 | |
3738 if (tcodes->length() < nfids) { | |
3739 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
3740 } | |
3741 | |
3742 jsize off = 0; | |
3743 /* loop through fields, setting values */ | |
3744 for (jsize i = 0; i < nfids; i++) { | |
3745 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
3746 int field_offset; | |
3747 if (fid != NULL) { | |
3748 // NULL is a legal value for fid, but retrieving the field offset | |
3749 // trigger assertion in that case | |
3750 field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
3751 } | |
3752 | |
3753 switch (tcodes->char_at(i)) { | |
3754 case 'Z': | |
3755 if (fid != NULL) { | |
3756 jboolean val = (dbuf->byte_at(off) != 0) ? JNI_TRUE : JNI_FALSE; | |
3757 o->bool_field_put(field_offset, val); | |
3758 } | |
3759 off++; | |
3760 break; | |
3761 | |
3762 case 'B': | |
3763 if (fid != NULL) { | |
3764 o->byte_field_put(field_offset, dbuf->byte_at(off)); | |
3765 } | |
3766 off++; | |
3767 break; | |
3768 | |
3769 case 'C': | |
3770 if (fid != NULL) { | |
3771 jchar val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
3772 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
3773 o->char_field_put(field_offset, val); | |
3774 } | |
3775 off += 2; | |
3776 break; | |
3777 | |
3778 case 'S': | |
3779 if (fid != NULL) { | |
3780 jshort val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
3781 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
3782 o->short_field_put(field_offset, val); | |
3783 } | |
3784 off += 2; | |
3785 break; | |
3786 | |
3787 case 'I': | |
3788 if (fid != NULL) { | |
3789 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
3790 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
3791 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
3792 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
3793 o->int_field_put(field_offset, ival); | |
3794 } | |
3795 off += 4; | |
3796 break; | |
3797 | |
3798 case 'F': | |
3799 if (fid != NULL) { | |
3800 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
3801 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
3802 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
3803 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
3804 jfloat fval = (*int_bits_to_float_fn)(env, NULL, ival); | |
3805 o->float_field_put(field_offset, fval); | |
3806 } | |
3807 off += 4; | |
3808 break; | |
3809 | |
3810 case 'J': | |
3811 if (fid != NULL) { | |
3812 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
3813 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
3814 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
3815 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
3816 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
3817 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
3818 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
3819 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
3820 o->long_field_put(field_offset, lval); | |
3821 } | |
3822 off += 8; | |
3823 break; | |
3824 | |
3825 case 'D': | |
3826 if (fid != NULL) { | |
3827 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
3828 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
3829 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
3830 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
3831 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
3832 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
3833 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
3834 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
3835 jdouble dval = (*long_bits_to_double_fn)(env, NULL, lval); | |
3836 o->double_field_put(field_offset, dval); | |
3837 } | |
3838 off += 8; | |
3839 break; | |
3840 | |
3841 default: | |
3842 // Illegal typecode | |
3843 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
3844 } | |
3845 } | |
3846 JVM_END | |
3847 | |
3848 | |
3849 JVM_ENTRY(void, JVM_GetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
3850 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
3851 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
3852 | |
3853 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
3854 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
3855 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
3856 oop o = JNIHandles::resolve(obj); | |
3857 | |
3858 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
3859 THROW(vmSymbols::java_lang_NullPointerException()); | |
3860 } | |
3861 | |
3862 jsize nfids = fids->length(); | |
3863 if (nfids == 0) return; | |
3864 | |
3865 if (tcodes->length() < nfids) { | |
3866 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
3867 } | |
3868 | |
3869 /* loop through fields, fetching values */ | |
3870 jsize off = 0; | |
3871 for (jsize i = 0; i < nfids; i++) { | |
3872 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
3873 if (fid == NULL) { | |
3874 THROW(vmSymbols::java_lang_NullPointerException()); | |
3875 } | |
3876 int field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
3877 | |
3878 switch (tcodes->char_at(i)) { | |
3879 case 'Z': | |
3880 { | |
3881 jboolean val = o->bool_field(field_offset); | |
3882 dbuf->byte_at_put(off++, (val != 0) ? 1 : 0); | |
3883 } | |
3884 break; | |
3885 | |
3886 case 'B': | |
3887 dbuf->byte_at_put(off++, o->byte_field(field_offset)); | |
3888 break; | |
3889 | |
3890 case 'C': | |
3891 { | |
3892 jchar val = o->char_field(field_offset); | |
3893 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
3894 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
3895 } | |
3896 break; | |
3897 | |
3898 case 'S': | |
3899 { | |
3900 jshort val = o->short_field(field_offset); | |
3901 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
3902 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
3903 } | |
3904 break; | |
3905 | |
3906 case 'I': | |
3907 { | |
3908 jint val = o->int_field(field_offset); | |
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 'F': | |
3917 { | |
3918 jfloat fval = o->float_field(field_offset); | |
3919 jint ival = (*float_to_int_bits_fn)(env, NULL, fval); | |
3920 dbuf->byte_at_put(off++, (ival >> 24) & 0xFF); | |
3921 dbuf->byte_at_put(off++, (ival >> 16) & 0xFF); | |
3922 dbuf->byte_at_put(off++, (ival >> 8) & 0xFF); | |
3923 dbuf->byte_at_put(off++, (ival >> 0) & 0xFF); | |
3924 } | |
3925 break; | |
3926 | |
3927 case 'J': | |
3928 { | |
3929 jlong val = o->long_field(field_offset); | |
3930 dbuf->byte_at_put(off++, (val >> 56) & 0xFF); | |
3931 dbuf->byte_at_put(off++, (val >> 48) & 0xFF); | |
3932 dbuf->byte_at_put(off++, (val >> 40) & 0xFF); | |
3933 dbuf->byte_at_put(off++, (val >> 32) & 0xFF); | |
3934 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
3935 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
3936 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
3937 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
3938 } | |
3939 break; | |
3940 | |
3941 case 'D': | |
3942 { | |
3943 jdouble dval = o->double_field(field_offset); | |
3944 jlong lval = (*double_to_long_bits_fn)(env, NULL, dval); | |
3945 dbuf->byte_at_put(off++, (lval >> 56) & 0xFF); | |
3946 dbuf->byte_at_put(off++, (lval >> 48) & 0xFF); | |
3947 dbuf->byte_at_put(off++, (lval >> 40) & 0xFF); | |
3948 dbuf->byte_at_put(off++, (lval >> 32) & 0xFF); | |
3949 dbuf->byte_at_put(off++, (lval >> 24) & 0xFF); | |
3950 dbuf->byte_at_put(off++, (lval >> 16) & 0xFF); | |
3951 dbuf->byte_at_put(off++, (lval >> 8) & 0xFF); | |
3952 dbuf->byte_at_put(off++, (lval >> 0) & 0xFF); | |
3953 } | |
3954 break; | |
3955 | |
3956 default: | |
3957 // Illegal typecode | |
3958 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
3959 } | |
3960 } | |
3961 JVM_END | |
3962 | |
3963 | |
3964 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
3965 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
3966 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS) { |
0 | 3967 // Security Note: |
3968 // The Java level wrapper will perform the necessary security check allowing | |
3969 // us to pass the NULL as the initiating class loader. | |
3970 klassOop klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); | |
878
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
3971 |
0 | 3972 KlassHandle klass_handle(THREAD, klass); |
3973 // Check if we should initialize the class | |
3974 if (init && klass_handle->oop_is_instance()) { | |
3975 klass_handle->initialize(CHECK_NULL); | |
3976 } | |
3977 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
3978 } | |
3979 | |
3980 | |
3981 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
3982 | |
3983 #ifndef PRODUCT | |
3984 | |
3985 extern "C" { | |
3986 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
3987 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
3988 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
3989 } | |
3990 | |
3991 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
3992 JVMWrapper("JVM_AccessBoolVMFlag"); | |
3993 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, INTERNAL); | |
3994 JVM_END | |
3995 | |
3996 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
3997 JVMWrapper("JVM_AccessVMIntFlag"); | |
3998 intx v; | |
3999 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, INTERNAL); | |
4000 *value = (jint)v; | |
4001 return result; | |
4002 JVM_END | |
4003 | |
4004 | |
4005 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
4006 JVMWrapper("JVM_VMBreakPoint"); | |
4007 oop the_obj = JNIHandles::resolve(obj); | |
4008 BREAKPOINT; | |
4009 JVM_END | |
4010 | |
4011 | |
4012 #endif | |
4013 | |
4014 | |
4015 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
4016 | |
4017 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
4018 JVMWrapper("JVM_InvokeMethod"); | |
4019 Handle method_handle; | |
4020 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
4021 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
4022 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
4023 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4024 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
4025 jobject res = JNIHandles::make_local(env, result); | |
4026 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4027 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
4028 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
4029 if (java_lang_Class::is_primitive(ret_type)) { | |
4030 // Only for primitive type vm allocates memory for java object. | |
4031 // See box() method. | |
4032 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4033 } | |
4034 } | |
4035 return res; | |
4036 } else { | |
4037 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
4038 } | |
4039 JVM_END | |
4040 | |
4041 | |
4042 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
4043 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
4044 oop constructor_mirror = JNIHandles::resolve(c); | |
4045 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
4046 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
4047 jobject res = JNIHandles::make_local(env, result); | |
4048 if (JvmtiExport::should_post_vm_object_alloc()) { | |
4049 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
4050 } | |
4051 return res; | |
4052 JVM_END | |
4053 | |
4054 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
4055 | |
4056 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
4057 JVMWrapper("JVM_SupportsCX8"); | |
4058 return VM_Version::supports_cx8(); | |
4059 JVM_END | |
4060 | |
4061 | |
4062 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
4063 JVMWrapper("JVM_CX8Field"); | |
4064 jlong res; | |
4065 oop o = JNIHandles::resolve(obj); | |
4066 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
4067 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
4068 | |
4069 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
4070 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
4071 | |
4072 return res == oldVal; | |
4073 JVM_END | |
4074 | |
116
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4075 // DTrace /////////////////////////////////////////////////////////////////// |
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4076 |
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4077 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
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4078 JVMWrapper("JVM_DTraceGetVersion"); |
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4079 return (jint)JVM_TRACING_DTRACE_VERSION; |
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4080 JVM_END |
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4081 |
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4082 JVM_ENTRY(jlong,JVM_DTraceActivate( |
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4083 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
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4084 JVM_DTraceProvider* providers)) |
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4085 JVMWrapper("JVM_DTraceActivate"); |
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4086 return DTraceJSDT::activate( |
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4087 version, module_name, providers_count, providers, CHECK_0); |
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4088 JVM_END |
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4089 |
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4090 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
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4091 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
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4092 return DTraceJSDT::is_probe_enabled(method); |
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4093 JVM_END |
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4094 |
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4095 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
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4096 JVMWrapper("JVM_DTraceDispose"); |
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4097 DTraceJSDT::dispose(handle); |
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4098 JVM_END |
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4099 |
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4100 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
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4101 JVMWrapper("JVM_DTraceIsSupported"); |
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4102 return DTraceJSDT::is_supported(); |
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4103 JVM_END |
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4104 |
0 | 4105 // Returns an array of all live Thread objects (VM internal JavaThreads, |
4106 // jvmti agent threads, and JNI attaching threads are skipped) | |
4107 // See CR 6404306 regarding JNI attaching threads | |
4108 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
4109 ResourceMark rm(THREAD); | |
4110 ThreadsListEnumerator tle(THREAD, false, false); | |
4111 JvmtiVMObjectAllocEventCollector oam; | |
4112 | |
4113 int num_threads = tle.num_threads(); | |
1142 | 4114 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
0 | 4115 objArrayHandle threads_ah(THREAD, r); |
4116 | |
4117 for (int i = 0; i < num_threads; i++) { | |
4118 Handle h = tle.get_threadObj(i); | |
4119 threads_ah->obj_at_put(i, h()); | |
4120 } | |
4121 | |
4122 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
4123 JVM_END | |
4124 | |
4125 | |
4126 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
4127 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
4128 // the corresponding entry in the given threads array | |
4129 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
4130 JVMWrapper("JVM_DumpThreads"); | |
4131 JvmtiVMObjectAllocEventCollector oam; | |
4132 | |
4133 // Check if threads is null | |
4134 if (threads == NULL) { | |
4135 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4136 } | |
4137 | |
4138 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
4139 objArrayHandle ah(THREAD, a); | |
4140 int num_threads = ah->length(); | |
4141 // check if threads is non-empty array | |
4142 if (num_threads == 0) { | |
4143 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
4144 } | |
4145 | |
4146 // check if threads is not an array of objects of Thread class | |
4147 klassOop k = objArrayKlass::cast(ah->klass())->element_klass(); | |
1142 | 4148 if (k != SystemDictionary::Thread_klass()) { |
0 | 4149 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
4150 } | |
4151 | |
4152 ResourceMark rm(THREAD); | |
4153 | |
4154 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
4155 for (int i = 0; i < num_threads; i++) { | |
4156 oop thread_obj = ah->obj_at(i); | |
4157 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
4158 thread_handle_array->append(h); | |
4159 } | |
4160 | |
4161 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
4162 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
4163 | |
4164 JVM_END | |
4165 | |
4166 // JVM monitoring and management support | |
4167 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
4168 return Management::get_jmm_interface(version); | |
4169 JVM_END | |
4170 | |
4171 // com.sun.tools.attach.VirtualMachine agent properties support | |
4172 // | |
4173 // Initialize the agent properties with the properties maintained in the VM | |
4174 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
4175 JVMWrapper("JVM_InitAgentProperties"); | |
4176 ResourceMark rm; | |
4177 | |
4178 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
4179 | |
4180 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
4181 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
4182 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
4183 return properties; | |
4184 JVM_END | |
4185 | |
4186 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
4187 { | |
4188 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
4189 JvmtiVMObjectAllocEventCollector oam; | |
4190 | |
4191 if (ofClass == NULL) { | |
4192 return NULL; | |
4193 } | |
4194 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
4195 // Special handling for primitive objects | |
4196 if (java_lang_Class::is_primitive(mirror())) { | |
4197 return NULL; | |
4198 } | |
4199 klassOop k = java_lang_Class::as_klassOop(mirror()); | |
4200 if (!Klass::cast(k)->oop_is_instance()) { | |
4201 return NULL; | |
4202 } | |
4203 instanceKlassHandle ik_h(THREAD, k); | |
4204 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
4205 if (encl_method_class_idx == 0) { | |
4206 return NULL; | |
4207 } | |
1142 | 4208 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
0 | 4209 objArrayHandle dest(THREAD, dest_o); |
4210 klassOop enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); | |
4211 dest->obj_at_put(0, Klass::cast(enc_k)->java_mirror()); | |
4212 int encl_method_method_idx = ik_h->enclosing_method_method_index(); | |
4213 if (encl_method_method_idx != 0) { | |
2177
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4214 Symbol* sym = ik_h->constants()->symbol_at( |
0 | 4215 extract_low_short_from_int( |
4216 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4217 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4218 dest->obj_at_put(1, str()); | |
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4219 sym = ik_h->constants()->symbol_at( |
0 | 4220 extract_high_short_from_int( |
4221 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
4222 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
4223 dest->obj_at_put(2, str()); | |
4224 } | |
4225 return (jobjectArray) JNIHandles::make_local(dest()); | |
4226 } | |
4227 JVM_END | |
4228 | |
4229 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
4230 jint javaThreadState)) | |
4231 { | |
4232 // If new thread states are added in future JDK and VM versions, | |
4233 // this should check if the JDK version is compatible with thread | |
4234 // states supported by the VM. Return NULL if not compatible. | |
4235 // | |
4236 // This function must map the VM java_lang_Thread::ThreadStatus | |
4237 // to the Java thread state that the JDK supports. | |
4238 // | |
4239 | |
4240 typeArrayHandle values_h; | |
4241 switch (javaThreadState) { | |
4242 case JAVA_THREAD_STATE_NEW : { | |
4243 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4244 values_h = typeArrayHandle(THREAD, r); | |
4245 values_h->int_at_put(0, java_lang_Thread::NEW); | |
4246 break; | |
4247 } | |
4248 case JAVA_THREAD_STATE_RUNNABLE : { | |
4249 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4250 values_h = typeArrayHandle(THREAD, r); | |
4251 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
4252 break; | |
4253 } | |
4254 case JAVA_THREAD_STATE_BLOCKED : { | |
4255 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4256 values_h = typeArrayHandle(THREAD, r); | |
4257 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
4258 break; | |
4259 } | |
4260 case JAVA_THREAD_STATE_WAITING : { | |
4261 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
4262 values_h = typeArrayHandle(THREAD, r); | |
4263 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
4264 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
4265 break; | |
4266 } | |
4267 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4268 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
4269 values_h = typeArrayHandle(THREAD, r); | |
4270 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
4271 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
4272 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
4273 break; | |
4274 } | |
4275 case JAVA_THREAD_STATE_TERMINATED : { | |
4276 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
4277 values_h = typeArrayHandle(THREAD, r); | |
4278 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
4279 break; | |
4280 } | |
4281 default: | |
4282 // Unknown state - probably incompatible JDK version | |
4283 return NULL; | |
4284 } | |
4285 | |
4286 return (jintArray) JNIHandles::make_local(env, values_h()); | |
4287 } | |
4288 JVM_END | |
4289 | |
4290 | |
4291 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
4292 jint javaThreadState, | |
4293 jintArray values)) | |
4294 { | |
4295 // If new thread states are added in future JDK and VM versions, | |
4296 // this should check if the JDK version is compatible with thread | |
4297 // states supported by the VM. Return NULL if not compatible. | |
4298 // | |
4299 // This function must map the VM java_lang_Thread::ThreadStatus | |
4300 // to the Java thread state that the JDK supports. | |
4301 // | |
4302 | |
4303 ResourceMark rm; | |
4304 | |
4305 // Check if threads is null | |
4306 if (values == NULL) { | |
4307 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
4308 } | |
4309 | |
4310 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
4311 typeArrayHandle values_h(THREAD, v); | |
4312 | |
4313 objArrayHandle names_h; | |
4314 switch (javaThreadState) { | |
4315 case JAVA_THREAD_STATE_NEW : { | |
4316 assert(values_h->length() == 1 && | |
4317 values_h->int_at(0) == java_lang_Thread::NEW, | |
4318 "Invalid threadStatus value"); | |
4319 | |
1142 | 4320 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4321 1, /* only 1 substate */ |
4322 CHECK_NULL); | |
4323 names_h = objArrayHandle(THREAD, r); | |
4324 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
4325 names_h->obj_at_put(0, name()); | |
4326 break; | |
4327 } | |
4328 case JAVA_THREAD_STATE_RUNNABLE : { | |
4329 assert(values_h->length() == 1 && | |
4330 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
4331 "Invalid threadStatus value"); | |
4332 | |
1142 | 4333 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4334 1, /* only 1 substate */ |
4335 CHECK_NULL); | |
4336 names_h = objArrayHandle(THREAD, r); | |
4337 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
4338 names_h->obj_at_put(0, name()); | |
4339 break; | |
4340 } | |
4341 case JAVA_THREAD_STATE_BLOCKED : { | |
4342 assert(values_h->length() == 1 && | |
4343 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
4344 "Invalid threadStatus value"); | |
4345 | |
1142 | 4346 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4347 1, /* only 1 substate */ |
4348 CHECK_NULL); | |
4349 names_h = objArrayHandle(THREAD, r); | |
4350 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
4351 names_h->obj_at_put(0, name()); | |
4352 break; | |
4353 } | |
4354 case JAVA_THREAD_STATE_WAITING : { | |
4355 assert(values_h->length() == 2 && | |
4356 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
4357 values_h->int_at(1) == java_lang_Thread::PARKED, | |
4358 "Invalid threadStatus value"); | |
1142 | 4359 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4360 2, /* number of substates */ |
4361 CHECK_NULL); | |
4362 names_h = objArrayHandle(THREAD, r); | |
4363 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
4364 CHECK_NULL); | |
4365 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
4366 CHECK_NULL); | |
4367 names_h->obj_at_put(0, name0()); | |
4368 names_h->obj_at_put(1, name1()); | |
4369 break; | |
4370 } | |
4371 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
4372 assert(values_h->length() == 3 && | |
4373 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
4374 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
4375 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
4376 "Invalid threadStatus value"); | |
1142 | 4377 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4378 3, /* number of substates */ |
4379 CHECK_NULL); | |
4380 names_h = objArrayHandle(THREAD, r); | |
4381 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
4382 CHECK_NULL); | |
4383 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
4384 CHECK_NULL); | |
4385 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
4386 CHECK_NULL); | |
4387 names_h->obj_at_put(0, name0()); | |
4388 names_h->obj_at_put(1, name1()); | |
4389 names_h->obj_at_put(2, name2()); | |
4390 break; | |
4391 } | |
4392 case JAVA_THREAD_STATE_TERMINATED : { | |
4393 assert(values_h->length() == 1 && | |
4394 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
4395 "Invalid threadStatus value"); | |
1142 | 4396 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
0 | 4397 1, /* only 1 substate */ |
4398 CHECK_NULL); | |
4399 names_h = objArrayHandle(THREAD, r); | |
4400 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
4401 names_h->obj_at_put(0, name()); | |
4402 break; | |
4403 } | |
4404 default: | |
4405 // Unknown state - probably incompatible JDK version | |
4406 return NULL; | |
4407 } | |
4408 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
4409 } | |
4410 JVM_END | |
4411 | |
4412 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
4413 { | |
4414 memset(info, 0, sizeof(info_size)); | |
4415 | |
4416 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
4417 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
4418 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
4419 | |
4420 // when we add a new capability in the jvm_version_info struct, we should also | |
4421 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
4422 // counter defined in runtimeService.cpp. | |
4423 info->is_attachable = AttachListener::is_attach_supported(); | |
4424 #ifdef KERNEL | |
4425 info->is_kernel_jvm = 1; // true; | |
4426 #else // KERNEL | |
4427 info->is_kernel_jvm = 0; // false; | |
4428 #endif // KERNEL | |
4429 } | |
4430 JVM_END |