Mercurial > hg > truffle
annotate src/share/vm/prims/jvm.cpp @ 657:715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
Reviewed-by: xlu, mchung
| author | acorn |
|---|---|
| date | Wed, 25 Mar 2009 13:09:28 -0400 |
| parents | 0fbdb4381b99 |
| children | d3676b4cb78c |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 579 | 2 * Copyright 1997-2009 Sun Microsystems, Inc. All Rights Reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 #include "incls/_precompiled.incl" | |
| 26 #include "incls/_jvm.cpp.incl" | |
| 27 #include <errno.h> | |
| 28 | |
| 29 /* | |
| 30 NOTE about use of any ctor or function call that can trigger a safepoint/GC: | |
| 31 such ctors and calls MUST NOT come between an oop declaration/init and its | |
| 32 usage because if objects are move this may cause various memory stomps, bus | |
| 33 errors and segfaults. Here is a cookbook for causing so called "naked oop | |
| 34 failures": | |
| 35 | |
| 36 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> { | |
| 37 JVMWrapper("JVM_GetClassDeclaredFields"); | |
| 38 | |
| 39 // Object address to be held directly in mirror & not visible to GC | |
| 40 oop mirror = JNIHandles::resolve_non_null(ofClass); | |
| 41 | |
| 42 // If this ctor can hit a safepoint, moving objects around, then | |
| 43 ComplexConstructor foo; | |
| 44 | |
| 45 // Boom! mirror may point to JUNK instead of the intended object | |
| 46 (some dereference of mirror) | |
| 47 | |
| 48 // Here's another call that may block for GC, making mirror stale | |
| 49 MutexLocker ml(some_lock); | |
| 50 | |
| 51 // And here's an initializer that can result in a stale oop | |
| 52 // all in one step. | |
| 53 oop o = call_that_can_throw_exception(TRAPS); | |
| 54 | |
| 55 | |
| 56 The solution is to keep the oop declaration BELOW the ctor or function | |
| 57 call that might cause a GC, do another resolve to reassign the oop, or | |
| 58 consider use of a Handle instead of an oop so there is immunity from object | |
| 59 motion. But note that the "QUICK" entries below do not have a handlemark | |
| 60 and thus can only support use of handles passed in. | |
| 61 */ | |
| 62 | |
| 63 static void trace_class_resolution_impl(klassOop to_class, TRAPS) { | |
| 64 ResourceMark rm; | |
| 65 int line_number = -1; | |
| 66 const char * source_file = NULL; | |
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67 const char * trace = "explicit"; |
| 0 | 68 klassOop caller = NULL; |
| 69 JavaThread* jthread = JavaThread::current(); | |
| 70 if (jthread->has_last_Java_frame()) { | |
| 71 vframeStream vfst(jthread); | |
| 72 | |
| 73 // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames | |
| 74 symbolHandle access_controller = oopFactory::new_symbol_handle("java/security/AccessController", CHECK); | |
| 75 klassOop access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); | |
| 76 symbolHandle privileged_action = oopFactory::new_symbol_handle("java/security/PrivilegedAction", CHECK); | |
| 77 klassOop privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); | |
| 78 | |
| 79 methodOop last_caller = NULL; | |
| 80 | |
| 81 while (!vfst.at_end()) { | |
| 82 methodOop m = vfst.method(); | |
| 83 if (!vfst.method()->method_holder()->klass_part()->is_subclass_of(SystemDictionary::classloader_klass())&& | |
| 84 !vfst.method()->method_holder()->klass_part()->is_subclass_of(access_controller_klass) && | |
| 85 !vfst.method()->method_holder()->klass_part()->is_subclass_of(privileged_action_klass)) { | |
| 86 break; | |
| 87 } | |
| 88 last_caller = m; | |
| 89 vfst.next(); | |
| 90 } | |
| 91 // if this is called from Class.forName0 and that is called from Class.forName, | |
| 92 // then print the caller of Class.forName. If this is Class.loadClass, then print | |
| 93 // that caller, otherwise keep quiet since this should be picked up elsewhere. | |
| 94 bool found_it = false; | |
| 95 if (!vfst.at_end() && | |
| 96 instanceKlass::cast(vfst.method()->method_holder())->name() == vmSymbols::java_lang_Class() && | |
| 97 vfst.method()->name() == vmSymbols::forName0_name()) { | |
| 98 vfst.next(); | |
| 99 if (!vfst.at_end() && | |
| 100 instanceKlass::cast(vfst.method()->method_holder())->name() == vmSymbols::java_lang_Class() && | |
| 101 vfst.method()->name() == vmSymbols::forName_name()) { | |
| 102 vfst.next(); | |
| 103 found_it = true; | |
| 104 } | |
| 105 } else if (last_caller != NULL && | |
| 106 instanceKlass::cast(last_caller->method_holder())->name() == | |
| 107 vmSymbols::java_lang_ClassLoader() && | |
| 108 (last_caller->name() == vmSymbols::loadClassInternal_name() || | |
| 109 last_caller->name() == vmSymbols::loadClass_name())) { | |
| 110 found_it = true; | |
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111 } else if (!vfst.at_end()) { |
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112 if (vfst.method()->is_native()) { |
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113 // JNI call |
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114 found_it = true; |
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115 } |
| 0 | 116 } |
| 117 if (found_it && !vfst.at_end()) { | |
| 118 // found the caller | |
| 119 caller = vfst.method()->method_holder(); | |
| 120 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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121 if (line_number == -1) { |
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122 // show method name if it's a native method |
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123 trace = vfst.method()->name_and_sig_as_C_string(); |
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124 } |
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125 symbolOop s = instanceKlass::cast(caller)->source_file_name(); |
| 0 | 126 if (s != NULL) { |
| 127 source_file = s->as_C_string(); | |
| 128 } | |
| 129 } | |
| 130 } | |
| 131 if (caller != NULL) { | |
| 132 if (to_class != caller) { | |
| 133 const char * from = Klass::cast(caller)->external_name(); | |
| 134 const char * to = Klass::cast(to_class)->external_name(); | |
| 135 // print in a single call to reduce interleaving between threads | |
| 136 if (source_file != NULL) { | |
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137 tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace); |
| 0 | 138 } else { |
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139 tty->print("RESOLVE %s %s (%s)\n", from, to, trace); |
| 0 | 140 } |
| 141 } | |
| 142 } | |
| 143 } | |
| 144 | |
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145 void trace_class_resolution(klassOop to_class) { |
| 0 | 146 EXCEPTION_MARK; |
| 147 trace_class_resolution_impl(to_class, THREAD); | |
| 148 if (HAS_PENDING_EXCEPTION) { | |
| 149 CLEAR_PENDING_EXCEPTION; | |
| 150 } | |
| 151 } | |
| 152 | |
| 153 // Wrapper to trace JVM functions | |
| 154 | |
| 155 #ifdef ASSERT | |
| 156 class JVMTraceWrapper : public StackObj { | |
| 157 public: | |
| 158 JVMTraceWrapper(const char* format, ...) { | |
| 159 if (TraceJVMCalls) { | |
| 160 va_list ap; | |
| 161 va_start(ap, format); | |
| 162 tty->print("JVM "); | |
| 163 tty->vprint_cr(format, ap); | |
| 164 va_end(ap); | |
| 165 } | |
| 166 } | |
| 167 }; | |
| 168 | |
| 169 Histogram* JVMHistogram; | |
| 170 volatile jint JVMHistogram_lock = 0; | |
| 171 | |
| 172 class JVMHistogramElement : public HistogramElement { | |
| 173 public: | |
| 174 JVMHistogramElement(const char* name); | |
| 175 }; | |
| 176 | |
| 177 JVMHistogramElement::JVMHistogramElement(const char* elementName) { | |
| 178 _name = elementName; | |
| 179 uintx count = 0; | |
| 180 | |
| 181 while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) { | |
| 182 while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) { | |
| 183 count +=1; | |
| 184 if ( (WarnOnStalledSpinLock > 0) | |
| 185 && (count % WarnOnStalledSpinLock == 0)) { | |
| 186 warning("JVMHistogram_lock seems to be stalled"); | |
| 187 } | |
| 188 } | |
| 189 } | |
| 190 | |
| 191 if(JVMHistogram == NULL) | |
| 192 JVMHistogram = new Histogram("JVM Call Counts",100); | |
| 193 | |
| 194 JVMHistogram->add_element(this); | |
| 195 Atomic::dec(&JVMHistogram_lock); | |
| 196 } | |
| 197 | |
| 198 #define JVMCountWrapper(arg) \ | |
| 199 static JVMHistogramElement* e = new JVMHistogramElement(arg); \ | |
| 200 if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen! | |
| 201 | |
| 202 #define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) | |
| 203 #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) | |
| 204 #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) | |
| 205 #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) | |
| 206 #else | |
| 207 #define JVMWrapper(arg1) | |
| 208 #define JVMWrapper2(arg1, arg2) | |
| 209 #define JVMWrapper3(arg1, arg2, arg3) | |
| 210 #define JVMWrapper4(arg1, arg2, arg3, arg4) | |
| 211 #endif | |
| 212 | |
| 213 | |
| 214 // Interface version ///////////////////////////////////////////////////////////////////// | |
| 215 | |
| 216 | |
| 217 JVM_LEAF(jint, JVM_GetInterfaceVersion()) | |
| 218 return JVM_INTERFACE_VERSION; | |
| 219 JVM_END | |
| 220 | |
| 221 | |
| 222 // java.lang.System ////////////////////////////////////////////////////////////////////// | |
| 223 | |
| 224 | |
| 225 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored)) | |
| 226 JVMWrapper("JVM_CurrentTimeMillis"); | |
| 227 return os::javaTimeMillis(); | |
| 228 JVM_END | |
| 229 | |
| 230 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored)) | |
| 231 JVMWrapper("JVM_NanoTime"); | |
| 232 return os::javaTimeNanos(); | |
| 233 JVM_END | |
| 234 | |
| 235 | |
| 236 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, | |
| 237 jobject dst, jint dst_pos, jint length)) | |
| 238 JVMWrapper("JVM_ArrayCopy"); | |
| 239 // Check if we have null pointers | |
| 240 if (src == NULL || dst == NULL) { | |
| 241 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 242 } | |
| 243 arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); | |
| 244 arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); | |
| 245 assert(s->is_oop(), "JVM_ArrayCopy: src not an oop"); | |
| 246 assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); | |
| 247 // Do copy | |
| 248 Klass::cast(s->klass())->copy_array(s, src_pos, d, dst_pos, length, thread); | |
| 249 JVM_END | |
| 250 | |
| 251 | |
| 252 static void set_property(Handle props, const char* key, const char* value, TRAPS) { | |
| 253 JavaValue r(T_OBJECT); | |
| 254 // public synchronized Object put(Object key, Object value); | |
| 255 HandleMark hm(THREAD); | |
| 256 Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK); | |
| 257 Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK); | |
| 258 JavaCalls::call_virtual(&r, | |
| 259 props, | |
| 260 KlassHandle(THREAD, SystemDictionary::properties_klass()), | |
| 261 vmSymbolHandles::put_name(), | |
| 262 vmSymbolHandles::object_object_object_signature(), | |
| 263 key_str, | |
| 264 value_str, | |
| 265 THREAD); | |
| 266 } | |
| 267 | |
| 268 | |
| 269 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties)); | |
| 270 | |
| 271 | |
| 272 JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties)) | |
| 273 JVMWrapper("JVM_InitProperties"); | |
| 274 ResourceMark rm; | |
| 275 | |
| 276 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
| 277 | |
| 278 // System property list includes both user set via -D option and | |
| 279 // jvm system specific properties. | |
| 280 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
| 281 PUTPROP(props, p->key(), p->value()); | |
| 282 } | |
| 283 | |
| 284 // Convert the -XX:MaxDirectMemorySize= command line flag | |
| 285 // to the sun.nio.MaxDirectMemorySize property. | |
| 286 // Do this after setting user properties to prevent people | |
| 287 // from setting the value with a -D option, as requested. | |
| 288 { | |
| 289 char as_chars[256]; | |
| 290 jio_snprintf(as_chars, sizeof(as_chars), INTX_FORMAT, MaxDirectMemorySize); | |
| 291 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); | |
| 292 } | |
| 293 | |
| 294 // JVM monitoring and management support | |
| 295 // Add the sun.management.compiler property for the compiler's name | |
| 296 { | |
| 297 #undef CSIZE | |
| 298 #if defined(_LP64) || defined(_WIN64) | |
| 299 #define CSIZE "64-Bit " | |
| 300 #else | |
| 301 #define CSIZE | |
| 302 #endif // 64bit | |
| 303 | |
| 304 #ifdef TIERED | |
| 305 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; | |
| 306 #else | |
| 307 #if defined(COMPILER1) | |
| 308 const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; | |
| 309 #elif defined(COMPILER2) | |
| 310 const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; | |
| 311 #else | |
| 312 const char* compiler_name = ""; | |
| 313 #endif // compilers | |
| 314 #endif // TIERED | |
| 315 | |
| 316 if (*compiler_name != '\0' && | |
| 317 (Arguments::mode() != Arguments::_int)) { | |
| 318 PUTPROP(props, "sun.management.compiler", compiler_name); | |
| 319 } | |
| 320 } | |
| 321 | |
| 322 return properties; | |
| 323 JVM_END | |
| 324 | |
| 325 | |
| 326 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// | |
| 327 | |
| 328 extern volatile jint vm_created; | |
| 329 | |
| 330 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
| 331 if (vm_created != 0 && (code == 0)) { | |
| 332 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
| 333 Universe::run_finalizers_on_exit(); | |
| 334 } | |
| 335 before_exit(thread); | |
| 336 vm_exit(code); | |
| 337 JVM_END | |
| 338 | |
| 339 | |
| 340 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
| 341 before_exit(thread); | |
| 342 vm_exit(code); | |
| 343 JVM_END | |
| 344 | |
| 345 | |
| 346 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
| 347 register_on_exit_function(func); | |
| 348 JVM_END | |
| 349 | |
| 350 | |
| 351 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
| 352 JVMWrapper("JVM_GC"); | |
| 353 if (!DisableExplicitGC) { | |
| 354 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
| 355 } | |
| 356 JVM_END | |
| 357 | |
| 358 | |
| 359 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
| 360 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
| 361 return Universe::heap()->millis_since_last_gc(); | |
| 362 JVM_END | |
| 363 | |
| 364 | |
| 365 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
| 366 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
| 367 JVM_END | |
| 368 | |
| 369 | |
| 370 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
| 371 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
| 372 JVM_END | |
| 373 | |
| 374 static inline jlong convert_size_t_to_jlong(size_t val) { | |
| 375 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
| 376 NOT_LP64 (return (jlong)val;) | |
| 377 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
| 378 } | |
| 379 | |
| 380 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
| 381 JVMWrapper("JVM_TotalMemory"); | |
| 382 size_t n = Universe::heap()->capacity(); | |
| 383 return convert_size_t_to_jlong(n); | |
| 384 JVM_END | |
| 385 | |
| 386 | |
| 387 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
| 388 JVMWrapper("JVM_FreeMemory"); | |
| 389 CollectedHeap* ch = Universe::heap(); | |
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390 size_t n; |
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391 { |
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392 MutexLocker x(Heap_lock); |
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393 n = ch->capacity() - ch->used(); |
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394 } |
| 0 | 395 return convert_size_t_to_jlong(n); |
| 396 JVM_END | |
| 397 | |
| 398 | |
| 399 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
| 400 JVMWrapper("JVM_MaxMemory"); | |
| 401 size_t n = Universe::heap()->max_capacity(); | |
| 402 return convert_size_t_to_jlong(n); | |
| 403 JVM_END | |
| 404 | |
| 405 | |
| 406 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
| 407 JVMWrapper("JVM_ActiveProcessorCount"); | |
| 408 return os::active_processor_count(); | |
| 409 JVM_END | |
| 410 | |
| 411 | |
| 412 | |
| 413 // java.lang.Throwable ////////////////////////////////////////////////////// | |
| 414 | |
| 415 | |
| 416 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
| 417 JVMWrapper("JVM_FillInStackTrace"); | |
| 418 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
| 419 java_lang_Throwable::fill_in_stack_trace(exception); | |
| 420 JVM_END | |
| 421 | |
| 422 | |
| 423 JVM_ENTRY(void, JVM_PrintStackTrace(JNIEnv *env, jobject receiver, jobject printable)) | |
| 424 JVMWrapper("JVM_PrintStackTrace"); | |
| 425 // Note: This is no longer used in Merlin, but we still support it for compatibility. | |
| 426 oop exception = JNIHandles::resolve_non_null(receiver); | |
| 427 oop stream = JNIHandles::resolve_non_null(printable); | |
| 428 java_lang_Throwable::print_stack_trace(exception, stream); | |
| 429 JVM_END | |
| 430 | |
| 431 | |
| 432 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
| 433 JVMWrapper("JVM_GetStackTraceDepth"); | |
| 434 oop exception = JNIHandles::resolve(throwable); | |
| 435 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
| 436 JVM_END | |
| 437 | |
| 438 | |
| 439 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
| 440 JVMWrapper("JVM_GetStackTraceElement"); | |
| 441 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
| 442 oop exception = JNIHandles::resolve(throwable); | |
| 443 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
| 444 return JNIHandles::make_local(env, element); | |
| 445 JVM_END | |
| 446 | |
| 447 | |
| 448 // java.lang.Object /////////////////////////////////////////////// | |
| 449 | |
| 450 | |
| 451 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
| 452 JVMWrapper("JVM_IHashCode"); | |
| 453 // as implemented in the classic virtual machine; return 0 if object is NULL | |
| 454 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
| 455 JVM_END | |
| 456 | |
| 457 | |
| 458 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
| 459 JVMWrapper("JVM_MonitorWait"); | |
| 460 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 461 assert(obj->is_instance() || obj->is_array(), "JVM_MonitorWait must apply to an object"); | |
| 462 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
| 463 if (JvmtiExport::should_post_monitor_wait()) { | |
| 464 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
| 465 } | |
| 466 ObjectSynchronizer::wait(obj, ms, CHECK); | |
| 467 JVM_END | |
| 468 | |
| 469 | |
| 470 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
| 471 JVMWrapper("JVM_MonitorNotify"); | |
| 472 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 473 assert(obj->is_instance() || obj->is_array(), "JVM_MonitorNotify must apply to an object"); | |
| 474 ObjectSynchronizer::notify(obj, CHECK); | |
| 475 JVM_END | |
| 476 | |
| 477 | |
| 478 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
| 479 JVMWrapper("JVM_MonitorNotifyAll"); | |
| 480 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 481 assert(obj->is_instance() || obj->is_array(), "JVM_MonitorNotifyAll must apply to an object"); | |
| 482 ObjectSynchronizer::notifyall(obj, CHECK); | |
| 483 JVM_END | |
| 484 | |
| 485 | |
| 486 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
| 487 JVMWrapper("JVM_Clone"); | |
| 488 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 489 const KlassHandle klass (THREAD, obj->klass()); | |
| 490 JvmtiVMObjectAllocEventCollector oam; | |
| 491 | |
| 492 #ifdef ASSERT | |
| 493 // Just checking that the cloneable flag is set correct | |
| 494 if (obj->is_javaArray()) { | |
| 495 guarantee(klass->is_cloneable(), "all arrays are cloneable"); | |
| 496 } else { | |
| 497 guarantee(obj->is_instance(), "should be instanceOop"); | |
| 498 bool cloneable = klass->is_subtype_of(SystemDictionary::cloneable_klass()); | |
| 499 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); | |
| 500 } | |
| 501 #endif | |
| 502 | |
| 503 // Check if class of obj supports the Cloneable interface. | |
| 504 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
| 505 if (!klass->is_cloneable()) { | |
| 506 ResourceMark rm(THREAD); | |
| 507 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
| 508 } | |
| 509 | |
| 510 // Make shallow object copy | |
| 511 const int size = obj->size(); | |
| 512 oop new_obj = NULL; | |
| 513 if (obj->is_javaArray()) { | |
| 514 const int length = ((arrayOop)obj())->length(); | |
| 515 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
| 516 } else { | |
| 517 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
| 518 } | |
| 519 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
| 520 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
| 521 // be suspended in the middle of copying the pointer and end up with parts | |
| 522 // of two different pointers in the field. Subsequent dereferences will crash. | |
| 523 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
| 524 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
| 525 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
| 526 // The same is true of StubRoutines::object_copy and the various oop_copy | |
| 527 // variants, and of the code generated by the inline_native_clone intrinsic. | |
| 528 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
| 529 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
| 530 (size_t)align_object_size(size) / HeapWordsPerLong); | |
| 531 // Clear the header | |
| 532 new_obj->init_mark(); | |
| 533 | |
| 534 // Store check (mark entire object and let gc sort it out) | |
| 535 BarrierSet* bs = Universe::heap()->barrier_set(); | |
| 536 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
| 537 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
| 538 | |
| 539 // Caution: this involves a java upcall, so the clone should be | |
| 540 // "gc-robust" by this stage. | |
| 541 if (klass->has_finalizer()) { | |
| 542 assert(obj->is_instance(), "should be instanceOop"); | |
| 543 new_obj = instanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); | |
| 544 } | |
| 545 | |
| 546 return JNIHandles::make_local(env, oop(new_obj)); | |
| 547 JVM_END | |
| 548 | |
| 549 // java.lang.Compiler //////////////////////////////////////////////////// | |
| 550 | |
| 551 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
| 552 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
| 553 // functions are all silently ignored unless JVM warnings are printed. | |
| 554 | |
| 555 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
| 556 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
| 557 JVM_END | |
| 558 | |
| 559 | |
| 560 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
| 561 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
| 562 return JNI_FALSE; | |
| 563 JVM_END | |
| 564 | |
| 565 | |
| 566 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
| 567 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
| 568 return JNI_FALSE; | |
| 569 JVM_END | |
| 570 | |
| 571 | |
| 572 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
| 573 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
| 574 return JNI_FALSE; | |
| 575 JVM_END | |
| 576 | |
| 577 | |
| 578 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
| 579 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
| 580 return NULL; | |
| 581 JVM_END | |
| 582 | |
| 583 | |
| 584 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
| 585 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
| 586 JVM_END | |
| 587 | |
| 588 | |
| 589 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
| 590 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
| 591 JVM_END | |
| 592 | |
| 593 | |
| 594 | |
| 595 // Error message support ////////////////////////////////////////////////////// | |
| 596 | |
| 597 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
| 598 JVMWrapper("JVM_GetLastErrorString"); | |
| 599 return hpi::lasterror(buf, len); | |
| 600 JVM_END | |
| 601 | |
| 602 | |
| 603 // java.io.File /////////////////////////////////////////////////////////////// | |
| 604 | |
| 605 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
| 606 JVMWrapper2("JVM_NativePath (%s)", path); | |
| 607 return hpi::native_path(path); | |
| 608 JVM_END | |
| 609 | |
| 610 | |
| 611 // Misc. class handling /////////////////////////////////////////////////////////// | |
| 612 | |
| 613 | |
| 614 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
| 615 JVMWrapper("JVM_GetCallerClass"); | |
| 616 klassOop k = thread->security_get_caller_class(depth); | |
| 617 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); | |
| 618 JVM_END | |
| 619 | |
| 620 | |
| 621 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
| 622 JVMWrapper("JVM_FindPrimitiveClass"); | |
| 623 oop mirror = NULL; | |
| 624 BasicType t = name2type(utf); | |
| 625 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
| 626 mirror = Universe::java_mirror(t); | |
| 627 } | |
| 628 if (mirror == NULL) { | |
| 629 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
| 630 } else { | |
| 631 return (jclass) JNIHandles::make_local(env, mirror); | |
| 632 } | |
| 633 JVM_END | |
| 634 | |
| 635 | |
| 636 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
| 637 JVMWrapper("JVM_ResolveClass"); | |
| 638 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
| 639 JVM_END | |
| 640 | |
| 388 | 641 // Common implementation for JVM_FindClassFromBootLoader and |
| 642 // JVM_FindClassFromLoader | |
| 643 static jclass jvm_find_class_from_class_loader(JNIEnv* env, const char* name, | |
| 644 jboolean init, jobject loader, | |
| 645 jboolean throwError, TRAPS) { | |
| 646 // Java libraries should ensure that name is never null... | |
| 647 if (name == NULL || (int)strlen(name) > symbolOopDesc::max_length()) { | |
| 648 // It's impossible to create this class; the name cannot fit | |
| 649 // into the constant pool. | |
| 650 if (throwError) { | |
| 651 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 652 } else { | |
| 653 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
| 654 } | |
| 655 } | |
| 656 symbolHandle h_name = oopFactory::new_symbol_handle(name, CHECK_NULL); | |
| 657 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
| 658 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 659 Handle(), throwError, THREAD); | |
| 660 | |
| 661 if (TraceClassResolution && result != NULL) { | |
| 662 trace_class_resolution(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(result))); | |
| 663 } | |
| 664 return result; | |
| 665 } | |
| 666 | |
|
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667 // Rationale behind JVM_FindClassFromBootLoader |
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668 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
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669 // b> because of (a) java.dll has a direct dependecy on the unexported |
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670 // private symbol "_JVM_FindClassFromClassLoader@20". |
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671 // c> the launcher cannot use the private symbol as it dynamically opens |
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672 // the entry point, so if something changes, the launcher will fail |
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673 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
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674 // stable exported interface. |
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675 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
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676 // signature to change from _JVM_FindClassFromClassLoader@20 to |
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677 // JVM_FindClassFromClassLoader and will not be backward compatible |
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678 // with older JDKs. |
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679 // Thus a public/stable exported entry point is the right solution, |
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680 // public here means public in linker semantics, and is exported only |
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681 // to the JDK, and is not intended to be a public API. |
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682 |
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683 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
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684 const char* name, |
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685 jboolean throwError)) |
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686 JVMWrapper3("JVM_FindClassFromBootLoader %s throw %s", name, |
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687 throwError ? "error" : "exception"); |
| 388 | 688 return jvm_find_class_from_class_loader(env, name, JNI_FALSE, |
| 689 (jobject)NULL, throwError, THREAD); | |
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690 JVM_END |
| 0 | 691 |
| 692 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, | |
| 693 jboolean init, jobject loader, | |
| 694 jboolean throwError)) | |
| 695 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, | |
| 696 throwError ? "error" : "exception"); | |
| 388 | 697 return jvm_find_class_from_class_loader(env, name, init, loader, |
| 698 throwError, THREAD); | |
| 0 | 699 JVM_END |
| 700 | |
| 701 | |
| 702 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
| 703 jboolean init, jclass from)) | |
| 704 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
| 705 if (name == NULL || (int)strlen(name) > symbolOopDesc::max_length()) { | |
| 706 // It's impossible to create this class; the name cannot fit | |
| 707 // into the constant pool. | |
| 708 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 709 } | |
| 710 symbolHandle h_name = oopFactory::new_symbol_handle(name, CHECK_NULL); | |
| 711 oop from_class_oop = JNIHandles::resolve(from); | |
| 712 klassOop from_class = (from_class_oop == NULL) | |
| 713 ? (klassOop)NULL | |
| 714 : java_lang_Class::as_klassOop(from_class_oop); | |
| 715 oop class_loader = NULL; | |
| 716 oop protection_domain = NULL; | |
| 717 if (from_class != NULL) { | |
| 718 class_loader = Klass::cast(from_class)->class_loader(); | |
| 719 protection_domain = Klass::cast(from_class)->protection_domain(); | |
| 720 } | |
| 721 Handle h_loader(THREAD, class_loader); | |
| 722 Handle h_prot (THREAD, protection_domain); | |
| 723 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 724 h_prot, true, thread); | |
| 725 | |
| 726 if (TraceClassResolution && result != NULL) { | |
| 727 // this function is generally only used for class loading during verification. | |
| 728 ResourceMark rm; | |
| 729 oop from_mirror = JNIHandles::resolve_non_null(from); | |
| 730 klassOop from_class = java_lang_Class::as_klassOop(from_mirror); | |
| 731 const char * from_name = Klass::cast(from_class)->external_name(); | |
| 732 | |
| 733 oop mirror = JNIHandles::resolve_non_null(result); | |
| 734 klassOop to_class = java_lang_Class::as_klassOop(mirror); | |
| 735 const char * to = Klass::cast(to_class)->external_name(); | |
| 736 tty->print("RESOLVE %s %s (verification)\n", from_name, to); | |
| 737 } | |
| 738 | |
| 739 return result; | |
| 740 JVM_END | |
| 741 | |
| 742 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
| 743 if (loader.is_null()) { | |
| 744 return; | |
| 745 } | |
| 746 | |
| 747 // check whether the current caller thread holds the lock or not. | |
| 748 // If not, increment the corresponding counter | |
| 749 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
| 750 ObjectSynchronizer::owner_self) { | |
| 751 counter->inc(); | |
| 752 } | |
| 753 } | |
| 754 | |
| 755 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
| 756 static jclass jvm_define_class_common(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source, TRAPS) { | |
|
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757 if (source == NULL) source = "__JVM_DefineClass__"; |
| 0 | 758 |
| 759 // Since exceptions can be thrown, class initialization can take place | |
| 760 // if name is NULL no check for class name in .class stream has to be made. | |
| 761 symbolHandle class_name; | |
| 762 if (name != NULL) { | |
| 763 const int str_len = (int)strlen(name); | |
| 764 if (str_len > symbolOopDesc::max_length()) { | |
| 765 // It's impossible to create this class; the name cannot fit | |
| 766 // into the constant pool. | |
| 767 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 768 } | |
| 769 class_name = oopFactory::new_symbol_handle(name, str_len, CHECK_NULL); | |
| 770 } | |
| 771 | |
| 772 ResourceMark rm(THREAD); | |
| 773 ClassFileStream st((u1*) buf, len, (char *)source); | |
| 774 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
| 775 if (UsePerfData) { | |
| 776 is_lock_held_by_thread(class_loader, | |
| 777 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
| 778 THREAD); | |
| 779 } | |
| 780 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
| 781 klassOop k = SystemDictionary::resolve_from_stream(class_name, class_loader, | |
| 782 protection_domain, &st, | |
| 783 CHECK_NULL); | |
| 784 | |
| 785 if (TraceClassResolution && k != NULL) { | |
| 786 trace_class_resolution(k); | |
| 787 } | |
| 788 | |
| 789 return (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); | |
| 790 } | |
| 791 | |
| 792 | |
| 793 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
| 794 JVMWrapper2("JVM_DefineClass %s", name); | |
| 795 | |
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796 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, THREAD); |
| 0 | 797 JVM_END |
| 798 | |
| 799 | |
| 800 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
| 801 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
| 802 | |
| 803 return jvm_define_class_common(env, name, loader, buf, len, pd, source, THREAD); | |
| 804 JVM_END | |
| 805 | |
| 806 | |
| 807 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
| 808 JVMWrapper("JVM_FindLoadedClass"); | |
| 809 ResourceMark rm(THREAD); | |
| 810 | |
| 811 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 812 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
| 813 | |
| 814 const char* str = java_lang_String::as_utf8_string(string()); | |
| 815 // Sanity check, don't expect null | |
| 816 if (str == NULL) return NULL; | |
| 817 | |
| 818 const int str_len = (int)strlen(str); | |
| 819 if (str_len > symbolOopDesc::max_length()) { | |
| 820 // It's impossible to create this class; the name cannot fit | |
| 821 // into the constant pool. | |
| 822 return NULL; | |
| 823 } | |
| 824 symbolHandle klass_name = oopFactory::new_symbol_handle(str, str_len,CHECK_NULL); | |
| 825 | |
| 826 // Security Note: | |
| 827 // The Java level wrapper will perform the necessary security check allowing | |
| 828 // us to pass the NULL as the initiating class loader. | |
| 829 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
| 830 if (UsePerfData) { | |
| 831 is_lock_held_by_thread(h_loader, | |
| 832 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
| 833 THREAD); | |
| 834 } | |
| 835 | |
| 836 klassOop k = SystemDictionary::find_instance_or_array_klass(klass_name, | |
| 837 h_loader, | |
| 838 Handle(), | |
| 839 CHECK_NULL); | |
| 840 | |
| 841 return (k == NULL) ? NULL : | |
| 842 (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); | |
| 843 JVM_END | |
| 844 | |
| 845 | |
| 846 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
| 847 | |
| 848 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
| 849 assert (cls != NULL, "illegal class"); | |
| 850 JVMWrapper("JVM_GetClassName"); | |
| 851 JvmtiVMObjectAllocEventCollector oam; | |
| 852 ResourceMark rm(THREAD); | |
| 853 const char* name; | |
| 854 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 855 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
| 856 } else { | |
| 857 // Consider caching interned string in Klass | |
| 858 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
| 859 assert(k->is_klass(), "just checking"); | |
| 860 name = Klass::cast(k)->external_name(); | |
| 861 } | |
| 862 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
| 863 return (jstring) JNIHandles::make_local(env, result); | |
| 864 JVM_END | |
| 865 | |
| 866 | |
| 867 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
| 868 JVMWrapper("JVM_GetClassInterfaces"); | |
| 869 JvmtiVMObjectAllocEventCollector oam; | |
| 870 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 871 | |
| 872 // Special handling for primitive objects | |
| 873 if (java_lang_Class::is_primitive(mirror)) { | |
| 874 // Primitive objects does not have any interfaces | |
| 875 objArrayOop r = oopFactory::new_objArray(SystemDictionary::class_klass(), 0, CHECK_NULL); | |
| 876 return (jobjectArray) JNIHandles::make_local(env, r); | |
| 877 } | |
| 878 | |
| 879 KlassHandle klass(thread, java_lang_Class::as_klassOop(mirror)); | |
| 880 // Figure size of result array | |
| 881 int size; | |
| 882 if (klass->oop_is_instance()) { | |
| 883 size = instanceKlass::cast(klass())->local_interfaces()->length(); | |
| 884 } else { | |
| 885 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
| 886 size = 2; | |
| 887 } | |
| 888 | |
| 889 // Allocate result array | |
| 890 objArrayOop r = oopFactory::new_objArray(SystemDictionary::class_klass(), size, CHECK_NULL); | |
| 891 objArrayHandle result (THREAD, r); | |
| 892 // Fill in result | |
| 893 if (klass->oop_is_instance()) { | |
| 894 // Regular instance klass, fill in all local interfaces | |
| 895 for (int index = 0; index < size; index++) { | |
| 896 klassOop k = klassOop(instanceKlass::cast(klass())->local_interfaces()->obj_at(index)); | |
| 897 result->obj_at_put(index, Klass::cast(k)->java_mirror()); | |
| 898 } | |
| 899 } else { | |
| 900 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
| 901 result->obj_at_put(0, Klass::cast(SystemDictionary::cloneable_klass())->java_mirror()); | |
| 902 result->obj_at_put(1, Klass::cast(SystemDictionary::serializable_klass())->java_mirror()); | |
| 903 } | |
| 904 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 905 JVM_END | |
| 906 | |
| 907 | |
| 908 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
| 909 JVMWrapper("JVM_GetClassLoader"); | |
| 910 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 911 return NULL; | |
| 912 } | |
| 913 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 914 oop loader = Klass::cast(k)->class_loader(); | |
| 915 return JNIHandles::make_local(env, loader); | |
| 916 JVM_END | |
| 917 | |
| 918 | |
| 919 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
| 920 JVMWrapper("JVM_IsInterface"); | |
| 921 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 922 if (java_lang_Class::is_primitive(mirror)) { | |
| 923 return JNI_FALSE; | |
| 924 } | |
| 925 klassOop k = java_lang_Class::as_klassOop(mirror); | |
| 926 jboolean result = Klass::cast(k)->is_interface(); | |
| 927 assert(!result || Klass::cast(k)->oop_is_instance(), | |
| 928 "all interfaces are instance types"); | |
| 929 // The compiler intrinsic for isInterface tests the | |
| 930 // Klass::_access_flags bits in the same way. | |
| 931 return result; | |
| 932 JVM_END | |
| 933 | |
| 934 | |
| 935 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
| 936 JVMWrapper("JVM_GetClassSigners"); | |
| 937 JvmtiVMObjectAllocEventCollector oam; | |
| 938 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 939 // There are no signers for primitive types | |
| 940 return NULL; | |
| 941 } | |
| 942 | |
| 943 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 944 objArrayOop signers = NULL; | |
| 945 if (Klass::cast(k)->oop_is_instance()) { | |
| 946 signers = instanceKlass::cast(k)->signers(); | |
| 947 } | |
| 948 | |
| 949 // If there are no signers set in the class, or if the class | |
| 950 // is an array, return NULL. | |
| 951 if (signers == NULL) return NULL; | |
| 952 | |
| 953 // copy of the signers array | |
| 954 klassOop element = objArrayKlass::cast(signers->klass())->element_klass(); | |
| 955 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); | |
| 956 for (int index = 0; index < signers->length(); index++) { | |
| 957 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
| 958 } | |
| 959 | |
| 960 // return the copy | |
| 961 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
| 962 JVM_END | |
| 963 | |
| 964 | |
| 965 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
| 966 JVMWrapper("JVM_SetClassSigners"); | |
| 967 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 968 // This call is ignored for primitive types and arrays. | |
| 969 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
| 970 // be called with an array. Only the bootstrap loader creates arrays. | |
| 971 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 972 if (Klass::cast(k)->oop_is_instance()) { | |
| 973 instanceKlass::cast(k)->set_signers(objArrayOop(JNIHandles::resolve(signers))); | |
| 974 } | |
| 975 } | |
| 976 JVM_END | |
| 977 | |
| 978 | |
| 979 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
| 980 JVMWrapper("JVM_GetProtectionDomain"); | |
| 981 if (JNIHandles::resolve(cls) == NULL) { | |
| 982 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
| 983 } | |
| 984 | |
| 985 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 986 // Primitive types does not have a protection domain. | |
| 987 return NULL; | |
| 988 } | |
| 989 | |
| 990 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
| 991 return (jobject) JNIHandles::make_local(env, Klass::cast(k)->protection_domain()); | |
| 992 JVM_END | |
| 993 | |
| 994 | |
| 995 // Obsolete since 1.2 (Class.setProtectionDomain removed), although | |
| 996 // still defined in core libraries as of 1.5. | |
| 997 JVM_ENTRY(void, JVM_SetProtectionDomain(JNIEnv *env, jclass cls, jobject protection_domain)) | |
| 998 JVMWrapper("JVM_SetProtectionDomain"); | |
| 999 if (JNIHandles::resolve(cls) == NULL) { | |
| 1000 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 1001 } | |
| 1002 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1003 // Call is ignored for primitive types | |
| 1004 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
| 1005 | |
| 1006 // cls won't be an array, as this called only from ClassLoader.defineClass | |
| 1007 if (Klass::cast(k)->oop_is_instance()) { | |
| 1008 oop pd = JNIHandles::resolve(protection_domain); | |
| 1009 assert(pd == NULL || pd->is_oop(), "just checking"); | |
| 1010 instanceKlass::cast(k)->set_protection_domain(pd); | |
| 1011 } | |
| 1012 } | |
| 1013 JVM_END | |
| 1014 | |
| 1015 | |
| 1016 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
| 1017 JVMWrapper("JVM_DoPrivileged"); | |
| 1018 | |
| 1019 if (action == NULL) { | |
| 1020 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
| 1021 } | |
| 1022 | |
| 1023 // Stack allocated list of privileged stack elements | |
| 1024 PrivilegedElement pi; | |
| 1025 | |
| 1026 // Check that action object understands "Object run()" | |
| 1027 Handle object (THREAD, JNIHandles::resolve(action)); | |
| 1028 | |
| 1029 // get run() method | |
| 1030 methodOop m_oop = Klass::cast(object->klass())->uncached_lookup_method( | |
| 1031 vmSymbols::run_method_name(), | |
| 1032 vmSymbols::void_object_signature()); | |
| 1033 methodHandle m (THREAD, m_oop); | |
| 1034 if (m.is_null() || !m->is_method() || !methodOop(m())->is_public() || methodOop(m())->is_static()) { | |
| 1035 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); | |
| 1036 } | |
| 1037 | |
| 1038 // Compute the frame initiating the do privileged operation and setup the privileged stack | |
| 1039 vframeStream vfst(thread); | |
| 1040 vfst.security_get_caller_frame(1); | |
| 1041 | |
| 1042 if (!vfst.at_end()) { | |
| 1043 pi.initialize(&vfst, JNIHandles::resolve(context), thread->privileged_stack_top(), CHECK_NULL); | |
| 1044 thread->set_privileged_stack_top(&pi); | |
| 1045 } | |
| 1046 | |
| 1047 | |
| 1048 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
| 1049 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
| 1050 Handle pending_exception; | |
| 1051 JavaValue result(T_OBJECT); | |
| 1052 JavaCallArguments args(object); | |
| 1053 JavaCalls::call(&result, m, &args, THREAD); | |
| 1054 | |
| 1055 // done with action, remove ourselves from the list | |
| 1056 if (!vfst.at_end()) { | |
| 1057 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
| 1058 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
| 1059 } | |
| 1060 | |
| 1061 if (HAS_PENDING_EXCEPTION) { | |
| 1062 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
| 1063 CLEAR_PENDING_EXCEPTION; | |
| 1064 | |
| 1065 if ( pending_exception->is_a(SystemDictionary::exception_klass()) && | |
| 1066 !pending_exception->is_a(SystemDictionary::runtime_exception_klass())) { | |
| 1067 // Throw a java.security.PrivilegedActionException(Exception e) exception | |
| 1068 JavaCallArguments args(pending_exception); | |
| 1069 THROW_ARG_0(vmSymbolHandles::java_security_PrivilegedActionException(), | |
| 1070 vmSymbolHandles::exception_void_signature(), | |
| 1071 &args); | |
| 1072 } | |
| 1073 } | |
| 1074 | |
| 1075 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
| 1076 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
| 1077 JVM_END | |
| 1078 | |
| 1079 | |
| 1080 // Returns the inherited_access_control_context field of the running thread. | |
| 1081 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1082 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
| 1083 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
| 1084 return JNIHandles::make_local(env, result); | |
| 1085 JVM_END | |
| 1086 | |
| 1087 class RegisterArrayForGC { | |
| 1088 private: | |
| 1089 JavaThread *_thread; | |
| 1090 public: | |
| 1091 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
| 1092 _thread = thread; | |
| 1093 _thread->register_array_for_gc(array); | |
| 1094 } | |
| 1095 | |
| 1096 ~RegisterArrayForGC() { | |
| 1097 _thread->register_array_for_gc(NULL); | |
| 1098 } | |
| 1099 }; | |
| 1100 | |
| 1101 | |
| 1102 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1103 JVMWrapper("JVM_GetStackAccessControlContext"); | |
| 1104 if (!UsePrivilegedStack) return NULL; | |
| 1105 | |
| 1106 ResourceMark rm(THREAD); | |
| 1107 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
| 1108 JvmtiVMObjectAllocEventCollector oam; | |
| 1109 | |
| 1110 // count the protection domains on the execution stack. We collapse | |
| 1111 // duplicate consecutive protection domains into a single one, as | |
| 1112 // well as stopping when we hit a privileged frame. | |
| 1113 | |
| 1114 // Use vframeStream to iterate through Java frames | |
| 1115 vframeStream vfst(thread); | |
| 1116 | |
| 1117 oop previous_protection_domain = NULL; | |
| 1118 Handle privileged_context(thread, NULL); | |
| 1119 bool is_privileged = false; | |
| 1120 oop protection_domain = NULL; | |
| 1121 | |
| 1122 for(; !vfst.at_end(); vfst.next()) { | |
| 1123 // get method of frame | |
| 1124 methodOop method = vfst.method(); | |
| 1125 intptr_t* frame_id = vfst.frame_id(); | |
| 1126 | |
| 1127 // check the privileged frames to see if we have a match | |
| 1128 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
| 1129 // this frame is privileged | |
| 1130 is_privileged = true; | |
| 1131 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
| 1132 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
| 1133 } else { | |
| 1134 protection_domain = instanceKlass::cast(method->method_holder())->protection_domain(); | |
| 1135 } | |
| 1136 | |
| 1137 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
| 1138 local_array->push(protection_domain); | |
| 1139 previous_protection_domain = protection_domain; | |
| 1140 } | |
| 1141 | |
| 1142 if (is_privileged) break; | |
| 1143 } | |
| 1144 | |
| 1145 | |
| 1146 // either all the domains on the stack were system domains, or | |
| 1147 // we had a privileged system domain | |
| 1148 if (local_array->is_empty()) { | |
| 1149 if (is_privileged && privileged_context.is_null()) return NULL; | |
| 1150 | |
| 1151 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
| 1152 return JNIHandles::make_local(env, result); | |
| 1153 } | |
| 1154 | |
| 1155 // the resource area must be registered in case of a gc | |
| 1156 RegisterArrayForGC ragc(thread, local_array); | |
| 1157 objArrayOop context = oopFactory::new_objArray(SystemDictionary::protectionDomain_klass(), | |
| 1158 local_array->length(), CHECK_NULL); | |
| 1159 objArrayHandle h_context(thread, context); | |
| 1160 for (int index = 0; index < local_array->length(); index++) { | |
| 1161 h_context->obj_at_put(index, local_array->at(index)); | |
| 1162 } | |
| 1163 | |
| 1164 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
| 1165 | |
| 1166 return JNIHandles::make_local(env, result); | |
| 1167 JVM_END | |
| 1168 | |
| 1169 | |
| 1170 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
| 1171 JVMWrapper("JVM_IsArrayClass"); | |
| 1172 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 1173 return (k != NULL) && Klass::cast(k)->oop_is_javaArray() ? true : false; | |
| 1174 JVM_END | |
| 1175 | |
| 1176 | |
| 1177 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
| 1178 JVMWrapper("JVM_IsPrimitiveClass"); | |
| 1179 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1180 return (jboolean) java_lang_Class::is_primitive(mirror); | |
| 1181 JVM_END | |
| 1182 | |
| 1183 | |
| 1184 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
| 1185 JVMWrapper("JVM_GetComponentType"); | |
| 1186 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1187 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
| 1188 return (jclass) JNIHandles::make_local(env, result); | |
| 1189 JVM_END | |
| 1190 | |
| 1191 | |
| 1192 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
| 1193 JVMWrapper("JVM_GetClassModifiers"); | |
| 1194 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1195 // Primitive type | |
| 1196 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 1197 } | |
| 1198 | |
| 1199 Klass* k = Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls))); | |
| 1200 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); | |
| 1201 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
| 1202 return k->modifier_flags(); | |
| 1203 JVM_END | |
| 1204 | |
| 1205 | |
| 1206 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
| 1207 | |
| 1208 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
| 1209 const int inner_class_info_index = 0; | |
| 1210 const int outer_class_info_index = 1; | |
| 1211 | |
| 1212 JvmtiVMObjectAllocEventCollector oam; | |
| 1213 // ofClass is a reference to a java_lang_Class object. The mirror object | |
| 1214 // of an instanceKlass | |
| 1215 | |
| 1216 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 1217 ! Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_instance()) { | |
| 1218 oop result = oopFactory::new_objArray(SystemDictionary::class_klass(), 0, CHECK_NULL); | |
| 1219 return (jobjectArray)JNIHandles::make_local(env, result); | |
| 1220 } | |
| 1221 | |
| 1222 instanceKlassHandle k(thread, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
| 1223 | |
| 1224 if (k->inner_classes()->length() == 0) { | |
| 1225 // Neither an inner nor outer class | |
| 1226 oop result = oopFactory::new_objArray(SystemDictionary::class_klass(), 0, CHECK_NULL); | |
| 1227 return (jobjectArray)JNIHandles::make_local(env, result); | |
| 1228 } | |
| 1229 | |
| 1230 // find inner class info | |
| 1231 typeArrayHandle icls(thread, k->inner_classes()); | |
| 1232 constantPoolHandle cp(thread, k->constants()); | |
| 1233 int length = icls->length(); | |
| 1234 | |
| 1235 // Allocate temp. result array | |
| 1236 objArrayOop r = oopFactory::new_objArray(SystemDictionary::class_klass(), length/4, CHECK_NULL); | |
| 1237 objArrayHandle result (THREAD, r); | |
| 1238 int members = 0; | |
| 1239 | |
| 1240 for(int i = 0; i < length; i += 4) { | |
| 1241 int ioff = icls->ushort_at(i + inner_class_info_index); | |
| 1242 int ooff = icls->ushort_at(i + outer_class_info_index); | |
| 1243 | |
| 1244 if (ioff != 0 && ooff != 0) { | |
| 1245 // Check to see if the name matches the class we're looking for | |
| 1246 // before attempting to find the class. | |
| 1247 if (cp->klass_name_at_matches(k, ooff)) { | |
| 1248 klassOop outer_klass = cp->klass_at(ooff, CHECK_NULL); | |
| 1249 if (outer_klass == k()) { | |
| 1250 klassOop ik = cp->klass_at(ioff, CHECK_NULL); | |
| 1251 instanceKlassHandle inner_klass (THREAD, ik); | |
| 1252 | |
| 1253 // Throws an exception if outer klass has not declared k as | |
| 1254 // an inner klass | |
| 1255 Reflection::check_for_inner_class(k, inner_klass, CHECK_NULL); | |
| 1256 | |
| 1257 result->obj_at_put(members, inner_klass->java_mirror()); | |
| 1258 members++; | |
| 1259 } | |
| 1260 } | |
| 1261 } | |
| 1262 } | |
| 1263 | |
| 1264 if (members != length) { | |
| 1265 // Return array of right length | |
| 1266 objArrayOop res = oopFactory::new_objArray(SystemDictionary::class_klass(), members, CHECK_NULL); | |
| 1267 for(int i = 0; i < members; i++) { | |
| 1268 res->obj_at_put(i, result->obj_at(i)); | |
| 1269 } | |
| 1270 return (jobjectArray)JNIHandles::make_local(env, res); | |
| 1271 } | |
| 1272 | |
| 1273 return (jobjectArray)JNIHandles::make_local(env, result()); | |
| 1274 JVM_END | |
| 1275 | |
| 1276 | |
| 1277 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
| 1278 const int inner_class_info_index = 0; | |
| 1279 const int outer_class_info_index = 1; | |
| 1280 | |
| 1281 // ofClass is a reference to a java_lang_Class object. | |
| 1282 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 1283 ! Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_instance()) { | |
| 1284 return NULL; | |
| 1285 } | |
| 1286 | |
| 1287 instanceKlassHandle k(thread, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
| 1288 | |
| 1289 if (k->inner_classes()->length() == 0) { | |
| 1290 // No inner class info => no declaring class | |
| 1291 return NULL; | |
| 1292 } | |
| 1293 | |
| 1294 typeArrayHandle i_icls(thread, k->inner_classes()); | |
| 1295 constantPoolHandle i_cp(thread, k->constants()); | |
| 1296 int i_length = i_icls->length(); | |
| 1297 | |
| 1298 bool found = false; | |
| 1299 klassOop ok; | |
| 1300 instanceKlassHandle outer_klass; | |
| 1301 | |
| 1302 // Find inner_klass attribute | |
| 1303 for(int i = 0; i < i_length && !found; i+= 4) { | |
| 1304 int ioff = i_icls->ushort_at(i + inner_class_info_index); | |
| 1305 int ooff = i_icls->ushort_at(i + outer_class_info_index); | |
| 1306 | |
| 1307 if (ioff != 0 && ooff != 0) { | |
| 1308 // Check to see if the name matches the class we're looking for | |
| 1309 // before attempting to find the class. | |
| 1310 if (i_cp->klass_name_at_matches(k, ioff)) { | |
| 1311 klassOop inner_klass = i_cp->klass_at(ioff, CHECK_NULL); | |
| 1312 if (k() == inner_klass) { | |
| 1313 found = true; | |
| 1314 ok = i_cp->klass_at(ooff, CHECK_NULL); | |
| 1315 outer_klass = instanceKlassHandle(thread, ok); | |
| 1316 } | |
| 1317 } | |
| 1318 } | |
| 1319 } | |
| 1320 | |
| 1321 // If no inner class attribute found for this class. | |
| 1322 if (!found) return NULL; | |
| 1323 | |
| 1324 // Throws an exception if outer klass has not declared k as an inner klass | |
| 1325 Reflection::check_for_inner_class(outer_klass, k, CHECK_NULL); | |
| 1326 | |
| 1327 return (jclass)JNIHandles::make_local(env, outer_klass->java_mirror()); | |
| 1328 JVM_END | |
| 1329 | |
| 1330 | |
| 1331 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
| 1332 assert (cls != NULL, "illegal class"); | |
| 1333 JVMWrapper("JVM_GetClassSignature"); | |
| 1334 JvmtiVMObjectAllocEventCollector oam; | |
| 1335 ResourceMark rm(THREAD); | |
| 1336 // Return null for arrays and primatives | |
| 1337 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1338 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
| 1339 if (Klass::cast(k)->oop_is_instance()) { | |
| 1340 symbolHandle sym = symbolHandle(THREAD, instanceKlass::cast(k)->generic_signature()); | |
| 1341 if (sym.is_null()) return NULL; | |
| 1342 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 1343 return (jstring) JNIHandles::make_local(env, str()); | |
| 1344 } | |
| 1345 } | |
| 1346 return NULL; | |
| 1347 JVM_END | |
| 1348 | |
| 1349 | |
| 1350 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
| 1351 assert (cls != NULL, "illegal class"); | |
| 1352 JVMWrapper("JVM_GetClassAnnotations"); | |
| 1353 ResourceMark rm(THREAD); | |
| 1354 // Return null for arrays and primitives | |
| 1355 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1356 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
| 1357 if (Klass::cast(k)->oop_is_instance()) { | |
| 1358 return (jbyteArray) JNIHandles::make_local(env, | |
| 1359 instanceKlass::cast(k)->class_annotations()); | |
| 1360 } | |
| 1361 } | |
| 1362 return NULL; | |
| 1363 JVM_END | |
| 1364 | |
| 1365 | |
| 1366 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) | |
| 1367 assert(field != NULL, "illegal field"); | |
| 1368 JVMWrapper("JVM_GetFieldAnnotations"); | |
| 1369 | |
| 1370 // some of this code was adapted from from jni_FromReflectedField | |
| 1371 | |
| 1372 // field is a handle to a java.lang.reflect.Field object | |
| 1373 oop reflected = JNIHandles::resolve_non_null(field); | |
| 1374 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
| 1375 klassOop k = java_lang_Class::as_klassOop(mirror); | |
| 1376 int slot = java_lang_reflect_Field::slot(reflected); | |
| 1377 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
| 1378 | |
| 1379 fieldDescriptor fd; | |
| 1380 KlassHandle kh(THREAD, k); | |
| 1381 intptr_t offset = instanceKlass::cast(kh())->offset_from_fields(slot); | |
| 1382 | |
| 1383 if (modifiers & JVM_ACC_STATIC) { | |
| 1384 // for static fields we only look in the current class | |
| 1385 if (!instanceKlass::cast(kh())->find_local_field_from_offset(offset, | |
| 1386 true, &fd)) { | |
| 1387 assert(false, "cannot find static field"); | |
| 1388 return NULL; // robustness | |
| 1389 } | |
| 1390 } else { | |
| 1391 // for instance fields we start with the current class and work | |
| 1392 // our way up through the superclass chain | |
| 1393 if (!instanceKlass::cast(kh())->find_field_from_offset(offset, false, | |
| 1394 &fd)) { | |
| 1395 assert(false, "cannot find instance field"); | |
| 1396 return NULL; // robustness | |
| 1397 } | |
| 1398 } | |
| 1399 | |
| 1400 return (jbyteArray) JNIHandles::make_local(env, fd.annotations()); | |
| 1401 JVM_END | |
| 1402 | |
| 1403 | |
| 1404 static methodOop jvm_get_method_common(jobject method, TRAPS) { | |
| 1405 // some of this code was adapted from from jni_FromReflectedMethod | |
| 1406 | |
| 1407 oop reflected = JNIHandles::resolve_non_null(method); | |
| 1408 oop mirror = NULL; | |
| 1409 int slot = 0; | |
| 1410 | |
| 1411 if (reflected->klass() == SystemDictionary::reflect_constructor_klass()) { | |
| 1412 mirror = java_lang_reflect_Constructor::clazz(reflected); | |
| 1413 slot = java_lang_reflect_Constructor::slot(reflected); | |
| 1414 } else { | |
| 1415 assert(reflected->klass() == SystemDictionary::reflect_method_klass(), | |
| 1416 "wrong type"); | |
| 1417 mirror = java_lang_reflect_Method::clazz(reflected); | |
| 1418 slot = java_lang_reflect_Method::slot(reflected); | |
| 1419 } | |
| 1420 klassOop k = java_lang_Class::as_klassOop(mirror); | |
| 1421 | |
| 1422 KlassHandle kh(THREAD, k); | |
| 1423 methodOop m = instanceKlass::cast(kh())->method_with_idnum(slot); | |
| 1424 if (m == NULL) { | |
| 1425 assert(false, "cannot find method"); | |
| 1426 return NULL; // robustness | |
| 1427 } | |
| 1428 | |
| 1429 return m; | |
| 1430 } | |
| 1431 | |
| 1432 | |
| 1433 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
| 1434 JVMWrapper("JVM_GetMethodAnnotations"); | |
| 1435 | |
| 1436 // method is a handle to a java.lang.reflect.Method object | |
| 1437 methodOop m = jvm_get_method_common(method, CHECK_NULL); | |
| 1438 return (jbyteArray) JNIHandles::make_local(env, m->annotations()); | |
| 1439 JVM_END | |
| 1440 | |
| 1441 | |
| 1442 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
| 1443 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
| 1444 | |
| 1445 // method is a handle to a java.lang.reflect.Method object | |
| 1446 methodOop m = jvm_get_method_common(method, CHECK_NULL); | |
| 1447 return (jbyteArray) JNIHandles::make_local(env, m->annotation_default()); | |
| 1448 JVM_END | |
| 1449 | |
| 1450 | |
| 1451 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
| 1452 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
| 1453 | |
| 1454 // method is a handle to a java.lang.reflect.Method object | |
| 1455 methodOop m = jvm_get_method_common(method, CHECK_NULL); | |
| 1456 return (jbyteArray) JNIHandles::make_local(env, m->parameter_annotations()); | |
| 1457 JVM_END | |
| 1458 | |
| 1459 | |
| 1460 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
| 1461 | |
| 1462 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1463 { | |
| 1464 JVMWrapper("JVM_GetClassDeclaredFields"); | |
| 1465 JvmtiVMObjectAllocEventCollector oam; | |
| 1466 | |
| 1467 // Exclude primitive types and array types | |
| 1468 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 1469 Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { | |
| 1470 // Return empty array | |
| 1471 oop res = oopFactory::new_objArray(SystemDictionary::reflect_field_klass(), 0, CHECK_NULL); | |
| 1472 return (jobjectArray) JNIHandles::make_local(env, res); | |
| 1473 } | |
| 1474 | |
| 1475 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
| 1476 constantPoolHandle cp(THREAD, k->constants()); | |
| 1477 | |
| 1478 // Ensure class is linked | |
| 1479 k->link_class(CHECK_NULL); | |
| 1480 | |
| 1481 typeArrayHandle fields(THREAD, k->fields()); | |
| 1482 int fields_len = fields->length(); | |
| 1483 | |
| 1484 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
| 1485 bool skip_backtrace = false; | |
| 1486 | |
| 1487 // Allocate result | |
| 1488 int num_fields; | |
| 1489 | |
| 1490 if (publicOnly) { | |
| 1491 num_fields = 0; | |
| 1492 for (int i = 0, j = 0; i < fields_len; i += instanceKlass::next_offset, j++) { | |
| 1493 int mods = fields->ushort_at(i + instanceKlass::access_flags_offset) & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
| 1494 if (mods & JVM_ACC_PUBLIC) ++num_fields; | |
| 1495 } | |
| 1496 } else { | |
| 1497 num_fields = fields_len / instanceKlass::next_offset; | |
| 1498 | |
| 1499 if (k() == SystemDictionary::throwable_klass()) { | |
| 1500 num_fields--; | |
| 1501 skip_backtrace = true; | |
| 1502 } | |
| 1503 } | |
| 1504 | |
| 1505 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_field_klass(), num_fields, CHECK_NULL); | |
| 1506 objArrayHandle result (THREAD, r); | |
| 1507 | |
| 1508 int out_idx = 0; | |
| 1509 fieldDescriptor fd; | |
| 1510 for (int i = 0; i < fields_len; i += instanceKlass::next_offset) { | |
| 1511 if (skip_backtrace) { | |
| 1512 // 4496456 skip java.lang.Throwable.backtrace | |
| 1513 int offset = k->offset_from_fields(i); | |
| 1514 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; | |
| 1515 } | |
| 1516 | |
| 1517 int mods = fields->ushort_at(i + instanceKlass::access_flags_offset) & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
| 1518 if (!publicOnly || (mods & JVM_ACC_PUBLIC)) { | |
| 1519 fd.initialize(k(), i); | |
| 1520 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); | |
| 1521 result->obj_at_put(out_idx, field); | |
| 1522 ++out_idx; | |
| 1523 } | |
| 1524 } | |
| 1525 assert(out_idx == num_fields, "just checking"); | |
| 1526 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1527 } | |
| 1528 JVM_END | |
| 1529 | |
| 1530 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1531 { | |
| 1532 JVMWrapper("JVM_GetClassDeclaredMethods"); | |
| 1533 JvmtiVMObjectAllocEventCollector oam; | |
| 1534 | |
| 1535 // Exclude primitive types and array types | |
| 1536 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
| 1537 || Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { | |
| 1538 // Return empty array | |
| 1539 oop res = oopFactory::new_objArray(SystemDictionary::reflect_method_klass(), 0, CHECK_NULL); | |
| 1540 return (jobjectArray) JNIHandles::make_local(env, res); | |
| 1541 } | |
| 1542 | |
| 1543 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
| 1544 | |
| 1545 // Ensure class is linked | |
| 1546 k->link_class(CHECK_NULL); | |
| 1547 | |
| 1548 objArrayHandle methods (THREAD, k->methods()); | |
| 1549 int methods_length = methods->length(); | |
| 1550 int num_methods = 0; | |
| 1551 | |
| 1552 int i; | |
| 1553 for (i = 0; i < methods_length; i++) { | |
| 1554 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
| 1555 if (!method->is_initializer()) { | |
| 1556 if (!publicOnly || method->is_public()) { | |
| 1557 ++num_methods; | |
| 1558 } | |
| 1559 } | |
| 1560 } | |
| 1561 | |
| 1562 // Allocate result | |
| 1563 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_method_klass(), num_methods, CHECK_NULL); | |
| 1564 objArrayHandle result (THREAD, r); | |
| 1565 | |
| 1566 int out_idx = 0; | |
| 1567 for (i = 0; i < methods_length; i++) { | |
| 1568 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
| 1569 if (!method->is_initializer()) { | |
| 1570 if (!publicOnly || method->is_public()) { | |
| 1571 oop m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); | |
| 1572 result->obj_at_put(out_idx, m); | |
| 1573 ++out_idx; | |
| 1574 } | |
| 1575 } | |
| 1576 } | |
| 1577 assert(out_idx == num_methods, "just checking"); | |
| 1578 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1579 } | |
| 1580 JVM_END | |
| 1581 | |
| 1582 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1583 { | |
| 1584 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
| 1585 JvmtiVMObjectAllocEventCollector oam; | |
| 1586 | |
| 1587 // Exclude primitive types and array types | |
| 1588 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
| 1589 || Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { | |
| 1590 // Return empty array | |
| 1591 oop res = oopFactory::new_objArray(SystemDictionary::reflect_constructor_klass(), 0 , CHECK_NULL); | |
| 1592 return (jobjectArray) JNIHandles::make_local(env, res); | |
| 1593 } | |
| 1594 | |
| 1595 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
| 1596 | |
| 1597 // Ensure class is linked | |
| 1598 k->link_class(CHECK_NULL); | |
| 1599 | |
| 1600 objArrayHandle methods (THREAD, k->methods()); | |
| 1601 int methods_length = methods->length(); | |
| 1602 int num_constructors = 0; | |
| 1603 | |
| 1604 int i; | |
| 1605 for (i = 0; i < methods_length; i++) { | |
| 1606 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
| 1607 if (method->is_initializer() && !method->is_static()) { | |
| 1608 if (!publicOnly || method->is_public()) { | |
| 1609 ++num_constructors; | |
| 1610 } | |
| 1611 } | |
| 1612 } | |
| 1613 | |
| 1614 // Allocate result | |
| 1615 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_constructor_klass(), num_constructors, CHECK_NULL); | |
| 1616 objArrayHandle result(THREAD, r); | |
| 1617 | |
| 1618 int out_idx = 0; | |
| 1619 for (i = 0; i < methods_length; i++) { | |
| 1620 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
| 1621 if (method->is_initializer() && !method->is_static()) { | |
| 1622 if (!publicOnly || method->is_public()) { | |
| 1623 oop m = Reflection::new_constructor(method, CHECK_NULL); | |
| 1624 result->obj_at_put(out_idx, m); | |
| 1625 ++out_idx; | |
| 1626 } | |
| 1627 } | |
| 1628 } | |
| 1629 assert(out_idx == num_constructors, "just checking"); | |
| 1630 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1631 } | |
| 1632 JVM_END | |
| 1633 | |
| 1634 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
| 1635 { | |
| 1636 JVMWrapper("JVM_GetClassAccessFlags"); | |
| 1637 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1638 // Primitive type | |
| 1639 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 1640 } | |
| 1641 | |
| 1642 Klass* k = Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls))); | |
| 1643 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; | |
| 1644 } | |
| 1645 JVM_END | |
| 1646 | |
| 1647 | |
| 1648 // Constant pool access ////////////////////////////////////////////////////////// | |
| 1649 | |
| 1650 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
| 1651 { | |
| 1652 JVMWrapper("JVM_GetClassConstantPool"); | |
| 1653 JvmtiVMObjectAllocEventCollector oam; | |
| 1654 | |
| 1655 // Return null for primitives and arrays | |
| 1656 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1657 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 1658 if (Klass::cast(k)->oop_is_instance()) { | |
| 1659 instanceKlassHandle k_h(THREAD, k); | |
| 1660 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
| 1661 sun_reflect_ConstantPool::set_cp_oop(jcp(), k_h->constants()); | |
| 1662 return JNIHandles::make_local(jcp()); | |
| 1663 } | |
| 1664 } | |
| 1665 return NULL; | |
| 1666 } | |
| 1667 JVM_END | |
| 1668 | |
| 1669 | |
| 1670 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject unused, jobject jcpool)) | |
| 1671 { | |
| 1672 JVMWrapper("JVM_ConstantPoolGetSize"); | |
| 1673 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1674 return cp->length(); | |
| 1675 } | |
| 1676 JVM_END | |
| 1677 | |
| 1678 | |
| 1679 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { | |
| 1680 if (!cp->is_within_bounds(index)) { | |
| 1681 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); | |
| 1682 } | |
| 1683 } | |
| 1684 | |
| 1685 | |
| 1686 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1687 { | |
| 1688 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
| 1689 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1690 bounds_check(cp, index, CHECK_NULL); | |
| 1691 constantTag tag = cp->tag_at(index); | |
| 1692 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 1693 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1694 } | |
| 1695 klassOop k = cp->klass_at(index, CHECK_NULL); | |
| 1696 return (jclass) JNIHandles::make_local(k->klass_part()->java_mirror()); | |
| 1697 } | |
| 1698 JVM_END | |
| 1699 | |
| 1700 | |
| 1701 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1702 { | |
| 1703 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
| 1704 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1705 bounds_check(cp, index, CHECK_NULL); | |
| 1706 constantTag tag = cp->tag_at(index); | |
| 1707 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 1708 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1709 } | |
| 1710 klassOop k = constantPoolOopDesc::klass_at_if_loaded(cp, index); | |
| 1711 if (k == NULL) return NULL; | |
| 1712 return (jclass) JNIHandles::make_local(k->klass_part()->java_mirror()); | |
| 1713 } | |
| 1714 JVM_END | |
| 1715 | |
| 1716 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 1717 constantTag tag = cp->tag_at(index); | |
| 1718 if (!tag.is_method() && !tag.is_interface_method()) { | |
| 1719 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1720 } | |
| 1721 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
| 1722 klassOop k_o; | |
| 1723 if (force_resolution) { | |
| 1724 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 1725 } else { | |
| 1726 k_o = constantPoolOopDesc::klass_at_if_loaded(cp, klass_ref); | |
| 1727 if (k_o == NULL) return NULL; | |
| 1728 } | |
| 1729 instanceKlassHandle k(THREAD, k_o); | |
| 1730 symbolOop name = cp->uncached_name_ref_at(index); | |
| 1731 symbolOop sig = cp->uncached_signature_ref_at(index); | |
| 1732 methodHandle m (THREAD, k->find_method(name, sig)); | |
| 1733 if (m.is_null()) { | |
| 1734 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
| 1735 } | |
| 1736 oop method; | |
| 1737 if (!m->is_initializer() || m->is_static()) { | |
| 1738 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
| 1739 } else { | |
| 1740 method = Reflection::new_constructor(m, CHECK_NULL); | |
| 1741 } | |
| 1742 return JNIHandles::make_local(method); | |
| 1743 } | |
| 1744 | |
| 1745 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1746 { | |
| 1747 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
| 1748 JvmtiVMObjectAllocEventCollector oam; | |
| 1749 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1750 bounds_check(cp, index, CHECK_NULL); | |
| 1751 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
| 1752 return res; | |
| 1753 } | |
| 1754 JVM_END | |
| 1755 | |
| 1756 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1757 { | |
| 1758 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
| 1759 JvmtiVMObjectAllocEventCollector oam; | |
| 1760 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1761 bounds_check(cp, index, CHECK_NULL); | |
| 1762 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
| 1763 return res; | |
| 1764 } | |
| 1765 JVM_END | |
| 1766 | |
| 1767 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 1768 constantTag tag = cp->tag_at(index); | |
| 1769 if (!tag.is_field()) { | |
| 1770 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1771 } | |
| 1772 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
| 1773 klassOop k_o; | |
| 1774 if (force_resolution) { | |
| 1775 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 1776 } else { | |
| 1777 k_o = constantPoolOopDesc::klass_at_if_loaded(cp, klass_ref); | |
| 1778 if (k_o == NULL) return NULL; | |
| 1779 } | |
| 1780 instanceKlassHandle k(THREAD, k_o); | |
| 1781 symbolOop name = cp->uncached_name_ref_at(index); | |
| 1782 symbolOop sig = cp->uncached_signature_ref_at(index); | |
| 1783 fieldDescriptor fd; | |
| 1784 klassOop target_klass = k->find_field(name, sig, &fd); | |
| 1785 if (target_klass == NULL) { | |
| 1786 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
| 1787 } | |
| 1788 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
| 1789 return JNIHandles::make_local(field); | |
| 1790 } | |
| 1791 | |
| 1792 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1793 { | |
| 1794 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
| 1795 JvmtiVMObjectAllocEventCollector oam; | |
| 1796 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1797 bounds_check(cp, index, CHECK_NULL); | |
| 1798 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
| 1799 return res; | |
| 1800 } | |
| 1801 JVM_END | |
| 1802 | |
| 1803 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1804 { | |
| 1805 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
| 1806 JvmtiVMObjectAllocEventCollector oam; | |
| 1807 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1808 bounds_check(cp, index, CHECK_NULL); | |
| 1809 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
| 1810 return res; | |
| 1811 } | |
| 1812 JVM_END | |
| 1813 | |
| 1814 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1815 { | |
| 1816 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
| 1817 JvmtiVMObjectAllocEventCollector oam; | |
| 1818 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1819 bounds_check(cp, index, CHECK_NULL); | |
| 1820 constantTag tag = cp->tag_at(index); | |
| 1821 if (!tag.is_field_or_method()) { | |
| 1822 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1823 } | |
| 1824 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
| 1825 symbolHandle klass_name (THREAD, cp->klass_name_at(klass_ref)); | |
| 1826 symbolHandle member_name(THREAD, cp->uncached_name_ref_at(index)); | |
| 1827 symbolHandle member_sig (THREAD, cp->uncached_signature_ref_at(index)); | |
| 1828 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::string_klass(), 3, CHECK_NULL); | |
| 1829 objArrayHandle dest(THREAD, dest_o); | |
| 1830 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
| 1831 dest->obj_at_put(0, str()); | |
| 1832 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
| 1833 dest->obj_at_put(1, str()); | |
| 1834 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
| 1835 dest->obj_at_put(2, str()); | |
| 1836 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 1837 } | |
| 1838 JVM_END | |
| 1839 | |
| 1840 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1841 { | |
| 1842 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
| 1843 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1844 bounds_check(cp, index, CHECK_0); | |
| 1845 constantTag tag = cp->tag_at(index); | |
| 1846 if (!tag.is_int()) { | |
| 1847 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1848 } | |
| 1849 return cp->int_at(index); | |
| 1850 } | |
| 1851 JVM_END | |
| 1852 | |
| 1853 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1854 { | |
| 1855 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
| 1856 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1857 bounds_check(cp, index, CHECK_(0L)); | |
| 1858 constantTag tag = cp->tag_at(index); | |
| 1859 if (!tag.is_long()) { | |
| 1860 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1861 } | |
| 1862 return cp->long_at(index); | |
| 1863 } | |
| 1864 JVM_END | |
| 1865 | |
| 1866 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1867 { | |
| 1868 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
| 1869 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1870 bounds_check(cp, index, CHECK_(0.0f)); | |
| 1871 constantTag tag = cp->tag_at(index); | |
| 1872 if (!tag.is_float()) { | |
| 1873 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1874 } | |
| 1875 return cp->float_at(index); | |
| 1876 } | |
| 1877 JVM_END | |
| 1878 | |
| 1879 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1880 { | |
| 1881 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
| 1882 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1883 bounds_check(cp, index, CHECK_(0.0)); | |
| 1884 constantTag tag = cp->tag_at(index); | |
| 1885 if (!tag.is_double()) { | |
| 1886 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1887 } | |
| 1888 return cp->double_at(index); | |
| 1889 } | |
| 1890 JVM_END | |
| 1891 | |
| 1892 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1893 { | |
| 1894 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
| 1895 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1896 bounds_check(cp, index, CHECK_NULL); | |
| 1897 constantTag tag = cp->tag_at(index); | |
| 1898 if (!tag.is_string() && !tag.is_unresolved_string()) { | |
| 1899 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1900 } | |
| 1901 oop str = cp->string_at(index, CHECK_NULL); | |
| 1902 return (jstring) JNIHandles::make_local(str); | |
| 1903 } | |
| 1904 JVM_END | |
| 1905 | |
| 1906 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1907 { | |
| 1908 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
| 1909 JvmtiVMObjectAllocEventCollector oam; | |
| 1910 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1911 bounds_check(cp, index, CHECK_NULL); | |
| 1912 constantTag tag = cp->tag_at(index); | |
| 1913 if (!tag.is_symbol()) { | |
| 1914 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1915 } | |
| 1916 symbolOop sym_o = cp->symbol_at(index); | |
| 1917 symbolHandle sym(THREAD, sym_o); | |
| 1918 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 1919 return (jstring) JNIHandles::make_local(str()); | |
| 1920 } | |
| 1921 JVM_END | |
| 1922 | |
| 1923 | |
| 1924 // Assertion support. ////////////////////////////////////////////////////////// | |
| 1925 | |
| 1926 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
| 1927 JVMWrapper("JVM_DesiredAssertionStatus"); | |
| 1928 assert(cls != NULL, "bad class"); | |
| 1929 | |
| 1930 oop r = JNIHandles::resolve(cls); | |
| 1931 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
| 1932 if (java_lang_Class::is_primitive(r)) return false; | |
| 1933 | |
| 1934 klassOop k = java_lang_Class::as_klassOop(r); | |
| 1935 assert(Klass::cast(k)->oop_is_instance(), "must be an instance klass"); | |
| 1936 if (! Klass::cast(k)->oop_is_instance()) return false; | |
| 1937 | |
| 1938 ResourceMark rm(THREAD); | |
| 1939 const char* name = Klass::cast(k)->name()->as_C_string(); | |
| 1940 bool system_class = Klass::cast(k)->class_loader() == NULL; | |
| 1941 return JavaAssertions::enabled(name, system_class); | |
| 1942 | |
| 1943 JVM_END | |
| 1944 | |
| 1945 | |
| 1946 // Return a new AssertionStatusDirectives object with the fields filled in with | |
| 1947 // command-line assertion arguments (i.e., -ea, -da). | |
| 1948 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
| 1949 JVMWrapper("JVM_AssertionStatusDirectives"); | |
| 1950 JvmtiVMObjectAllocEventCollector oam; | |
| 1951 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
| 1952 return JNIHandles::make_local(env, asd); | |
| 1953 JVM_END | |
| 1954 | |
| 1955 // Verification //////////////////////////////////////////////////////////////////////////////// | |
| 1956 | |
| 1957 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
| 1958 | |
| 1959 // RedefineClasses support: bug 6214132 caused verification to fail. | |
| 1960 // All functions from this section should call the jvmtiThreadSate function: | |
| 1961 // klassOop class_to_verify_considering_redefinition(klassOop klass). | |
| 1962 // The function returns a klassOop of the _scratch_class if the verifier | |
| 1963 // was invoked in the middle of the class redefinition. | |
| 1964 // Otherwise it returns its argument value which is the _the_class klassOop. | |
| 1965 // Please, refer to the description in the jvmtiThreadSate.hpp. | |
| 1966 | |
| 1967 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
| 1968 JVMWrapper("JVM_GetClassNameUTF"); | |
| 1969 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 1970 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 1971 return Klass::cast(k)->name()->as_utf8(); | |
| 1972 JVM_END | |
| 1973 | |
| 1974 | |
| 1975 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
| 1976 JVMWrapper("JVM_GetClassCPTypes"); | |
| 1977 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 1978 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 1979 // types will have length zero if this is not an instanceKlass | |
| 1980 // (length is determined by call to JVM_GetClassCPEntriesCount) | |
| 1981 if (Klass::cast(k)->oop_is_instance()) { | |
| 1982 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 1983 for (int index = cp->length() - 1; index >= 0; index--) { | |
| 1984 constantTag tag = cp->tag_at(index); | |
| 1985 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : | |
| 1986 (tag.is_unresolved_string()) ? JVM_CONSTANT_String : tag.value(); | |
| 1987 } | |
| 1988 } | |
| 1989 JVM_END | |
| 1990 | |
| 1991 | |
| 1992 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
| 1993 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
| 1994 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 1995 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 1996 if (!Klass::cast(k)->oop_is_instance()) | |
| 1997 return 0; | |
| 1998 return instanceKlass::cast(k)->constants()->length(); | |
| 1999 JVM_END | |
| 2000 | |
| 2001 | |
| 2002 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
| 2003 JVMWrapper("JVM_GetClassFieldsCount"); | |
| 2004 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2005 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2006 if (!Klass::cast(k)->oop_is_instance()) | |
| 2007 return 0; | |
| 2008 return instanceKlass::cast(k)->fields()->length() / instanceKlass::next_offset; | |
| 2009 JVM_END | |
| 2010 | |
| 2011 | |
| 2012 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
| 2013 JVMWrapper("JVM_GetClassMethodsCount"); | |
| 2014 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2015 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2016 if (!Klass::cast(k)->oop_is_instance()) | |
| 2017 return 0; | |
| 2018 return instanceKlass::cast(k)->methods()->length(); | |
| 2019 JVM_END | |
| 2020 | |
| 2021 | |
| 2022 // The following methods, used for the verifier, are never called with | |
| 2023 // array klasses, so a direct cast to instanceKlass is safe. | |
| 2024 // Typically, these methods are called in a loop with bounds determined | |
| 2025 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
| 2026 // zero for arrays. | |
| 2027 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
| 2028 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
| 2029 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2030 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2031 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2032 int length = methodOop(method)->checked_exceptions_length(); | |
| 2033 if (length > 0) { | |
| 2034 CheckedExceptionElement* table= methodOop(method)->checked_exceptions_start(); | |
| 2035 for (int i = 0; i < length; i++) { | |
| 2036 exceptions[i] = table[i].class_cp_index; | |
| 2037 } | |
| 2038 } | |
| 2039 JVM_END | |
| 2040 | |
| 2041 | |
| 2042 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
| 2043 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
| 2044 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2045 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2046 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2047 return methodOop(method)->checked_exceptions_length(); | |
| 2048 JVM_END | |
| 2049 | |
| 2050 | |
| 2051 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
| 2052 JVMWrapper("JVM_GetMethodIxByteCode"); | |
| 2053 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2054 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2055 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2056 memcpy(code, methodOop(method)->code_base(), methodOop(method)->code_size()); | |
| 2057 JVM_END | |
| 2058 | |
| 2059 | |
| 2060 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
| 2061 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
| 2062 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2063 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2064 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2065 return methodOop(method)->code_size(); | |
| 2066 JVM_END | |
| 2067 | |
| 2068 | |
| 2069 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
| 2070 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
| 2071 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2072 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2073 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2074 typeArrayOop extable = methodOop(method)->exception_table(); | |
| 2075 entry->start_pc = extable->int_at(entry_index * 4); | |
| 2076 entry->end_pc = extable->int_at(entry_index * 4 + 1); | |
| 2077 entry->handler_pc = extable->int_at(entry_index * 4 + 2); | |
| 2078 entry->catchType = extable->int_at(entry_index * 4 + 3); | |
| 2079 JVM_END | |
| 2080 | |
| 2081 | |
| 2082 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
| 2083 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
| 2084 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2085 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2086 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2087 return methodOop(method)->exception_table()->length() / 4; | |
| 2088 JVM_END | |
| 2089 | |
| 2090 | |
| 2091 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
| 2092 JVMWrapper("JVM_GetMethodIxModifiers"); | |
| 2093 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2094 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2095 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2096 return methodOop(method)->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 2097 JVM_END | |
| 2098 | |
| 2099 | |
| 2100 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
| 2101 JVMWrapper("JVM_GetFieldIxModifiers"); | |
| 2102 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2103 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2104 typeArrayOop fields = instanceKlass::cast(k)->fields(); | |
| 2105 return fields->ushort_at(field_index * instanceKlass::next_offset + instanceKlass::access_flags_offset) & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
| 2106 JVM_END | |
| 2107 | |
| 2108 | |
| 2109 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
| 2110 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
| 2111 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2112 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2113 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2114 return methodOop(method)->max_locals(); | |
| 2115 JVM_END | |
| 2116 | |
| 2117 | |
| 2118 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
| 2119 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
| 2120 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2121 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2122 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2123 return methodOop(method)->size_of_parameters(); | |
| 2124 JVM_END | |
| 2125 | |
| 2126 | |
| 2127 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
| 2128 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
| 2129 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2130 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2131 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2132 return methodOop(method)->max_stack(); | |
| 2133 JVM_END | |
| 2134 | |
| 2135 | |
| 2136 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
| 2137 JVMWrapper("JVM_IsConstructorIx"); | |
| 2138 ResourceMark rm(THREAD); | |
| 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 return methodOop(method)->name() == vmSymbols::object_initializer_name(); | |
| 2143 JVM_END | |
| 2144 | |
| 2145 | |
| 2146 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) | |
| 2147 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
| 2148 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2149 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2150 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2151 return methodOop(method)->name()->as_utf8(); | |
| 2152 JVM_END | |
| 2153 | |
| 2154 | |
| 2155 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
| 2156 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
| 2157 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2158 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2159 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2160 return methodOop(method)->signature()->as_utf8(); | |
| 2161 JVM_END | |
| 2162 | |
| 2163 /** | |
| 2164 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
| 2165 * read entries in the constant pool. Since the old verifier always | |
| 2166 * works on a copy of the code, it will not see any rewriting that | |
| 2167 * may possibly occur in the middle of verification. So it is important | |
| 2168 * that nothing it calls tries to use the cpCache instead of the raw | |
| 2169 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
| 2170 */ | |
| 2171 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2172 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
| 2173 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2174 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2175 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2176 switch (cp->tag_at(cp_index).value()) { | |
| 2177 case JVM_CONSTANT_Fieldref: | |
| 2178 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
| 2179 default: | |
| 2180 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
| 2181 } | |
| 2182 ShouldNotReachHere(); | |
| 2183 return NULL; | |
| 2184 JVM_END | |
| 2185 | |
| 2186 | |
| 2187 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2188 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
| 2189 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2190 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2191 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2192 switch (cp->tag_at(cp_index).value()) { | |
| 2193 case JVM_CONSTANT_InterfaceMethodref: | |
| 2194 case JVM_CONSTANT_Methodref: | |
| 2195 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
| 2196 default: | |
| 2197 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
| 2198 } | |
| 2199 ShouldNotReachHere(); | |
| 2200 return NULL; | |
| 2201 JVM_END | |
| 2202 | |
| 2203 | |
| 2204 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2205 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
| 2206 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2207 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2208 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2209 switch (cp->tag_at(cp_index).value()) { | |
| 2210 case JVM_CONSTANT_InterfaceMethodref: | |
| 2211 case JVM_CONSTANT_Methodref: | |
| 2212 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
| 2213 default: | |
| 2214 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
| 2215 } | |
| 2216 ShouldNotReachHere(); | |
| 2217 return NULL; | |
| 2218 JVM_END | |
| 2219 | |
| 2220 | |
| 2221 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2222 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
| 2223 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2224 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2225 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2226 switch (cp->tag_at(cp_index).value()) { | |
| 2227 case JVM_CONSTANT_Fieldref: | |
| 2228 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
| 2229 default: | |
| 2230 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
| 2231 } | |
| 2232 ShouldNotReachHere(); | |
| 2233 return NULL; | |
| 2234 JVM_END | |
| 2235 | |
| 2236 | |
| 2237 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2238 JVMWrapper("JVM_GetCPClassNameUTF"); | |
| 2239 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2240 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2241 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2242 symbolOop classname = cp->klass_name_at(cp_index); | |
| 2243 return classname->as_utf8(); | |
| 2244 JVM_END | |
| 2245 | |
| 2246 | |
| 2247 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2248 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
| 2249 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2250 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2251 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2252 switch (cp->tag_at(cp_index).value()) { | |
| 2253 case JVM_CONSTANT_Fieldref: { | |
| 2254 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
| 2255 symbolOop classname = cp->klass_name_at(class_index); | |
| 2256 return classname->as_utf8(); | |
| 2257 } | |
| 2258 default: | |
| 2259 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
| 2260 } | |
| 2261 ShouldNotReachHere(); | |
| 2262 return NULL; | |
| 2263 JVM_END | |
| 2264 | |
| 2265 | |
| 2266 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2267 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
| 2268 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2269 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2270 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2271 switch (cp->tag_at(cp_index).value()) { | |
| 2272 case JVM_CONSTANT_Methodref: | |
| 2273 case JVM_CONSTANT_InterfaceMethodref: { | |
| 2274 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
| 2275 symbolOop classname = cp->klass_name_at(class_index); | |
| 2276 return classname->as_utf8(); | |
| 2277 } | |
| 2278 default: | |
| 2279 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
| 2280 } | |
| 2281 ShouldNotReachHere(); | |
| 2282 return NULL; | |
| 2283 JVM_END | |
| 2284 | |
| 2285 | |
| 2286 JVM_QUICK_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
| 2287 JVMWrapper("JVM_GetCPFieldModifiers"); | |
| 2288 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2289 klassOop k_called = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(called_cls)); | |
| 2290 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2291 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
| 2292 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2293 constantPoolOop cp_called = instanceKlass::cast(k_called)->constants(); | |
| 2294 switch (cp->tag_at(cp_index).value()) { | |
| 2295 case JVM_CONSTANT_Fieldref: { | |
| 2296 symbolOop name = cp->uncached_name_ref_at(cp_index); | |
| 2297 symbolOop signature = cp->uncached_signature_ref_at(cp_index); | |
| 2298 typeArrayOop fields = instanceKlass::cast(k_called)->fields(); | |
| 2299 int fields_count = fields->length(); | |
| 2300 for (int i = 0; i < fields_count; i += instanceKlass::next_offset) { | |
| 2301 if (cp_called->symbol_at(fields->ushort_at(i + instanceKlass::name_index_offset)) == name && | |
| 2302 cp_called->symbol_at(fields->ushort_at(i + instanceKlass::signature_index_offset)) == signature) { | |
| 2303 return fields->ushort_at(i + instanceKlass::access_flags_offset) & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
| 2304 } | |
| 2305 } | |
| 2306 return -1; | |
| 2307 } | |
| 2308 default: | |
| 2309 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
| 2310 } | |
| 2311 ShouldNotReachHere(); | |
| 2312 return 0; | |
| 2313 JVM_END | |
| 2314 | |
| 2315 | |
| 2316 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
| 2317 JVMWrapper("JVM_GetCPMethodModifiers"); | |
| 2318 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2319 klassOop k_called = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(called_cls)); | |
| 2320 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2321 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
| 2322 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2323 switch (cp->tag_at(cp_index).value()) { | |
| 2324 case JVM_CONSTANT_Methodref: | |
| 2325 case JVM_CONSTANT_InterfaceMethodref: { | |
| 2326 symbolOop name = cp->uncached_name_ref_at(cp_index); | |
| 2327 symbolOop signature = cp->uncached_signature_ref_at(cp_index); | |
| 2328 objArrayOop methods = instanceKlass::cast(k_called)->methods(); | |
| 2329 int methods_count = methods->length(); | |
| 2330 for (int i = 0; i < methods_count; i++) { | |
| 2331 methodOop method = methodOop(methods->obj_at(i)); | |
| 2332 if (method->name() == name && method->signature() == signature) { | |
| 2333 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 2334 } | |
| 2335 } | |
| 2336 return -1; | |
| 2337 } | |
| 2338 default: | |
| 2339 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
| 2340 } | |
| 2341 ShouldNotReachHere(); | |
| 2342 return 0; | |
| 2343 JVM_END | |
| 2344 | |
| 2345 | |
| 2346 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
| 2347 | |
| 2348 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
| 2349 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
| 2350 JVM_END | |
| 2351 | |
| 2352 | |
| 2353 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
| 2354 JVMWrapper("JVM_IsSameClassPackage"); | |
| 2355 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
| 2356 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
| 2357 klassOop klass1 = java_lang_Class::as_klassOop(class1_mirror); | |
| 2358 klassOop klass2 = java_lang_Class::as_klassOop(class2_mirror); | |
| 2359 return (jboolean) Reflection::is_same_class_package(klass1, klass2); | |
| 2360 JVM_END | |
| 2361 | |
| 2362 | |
| 2363 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
| 2364 | |
| 2365 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
| 2366 JVMWrapper2("JVM_Open (%s)", fname); | |
| 2367 | |
| 2368 //%note jvm_r6 | |
| 2369 int result = hpi::open(fname, flags, mode); | |
| 2370 if (result >= 0) { | |
| 2371 return result; | |
| 2372 } else { | |
| 2373 switch(errno) { | |
| 2374 case EEXIST: | |
| 2375 return JVM_EEXIST; | |
| 2376 default: | |
| 2377 return -1; | |
| 2378 } | |
| 2379 } | |
| 2380 JVM_END | |
| 2381 | |
| 2382 | |
| 2383 JVM_LEAF(jint, JVM_Close(jint fd)) | |
| 2384 JVMWrapper2("JVM_Close (0x%x)", fd); | |
| 2385 //%note jvm_r6 | |
| 2386 return hpi::close(fd); | |
| 2387 JVM_END | |
| 2388 | |
| 2389 | |
| 2390 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
| 2391 JVMWrapper2("JVM_Read (0x%x)", fd); | |
| 2392 | |
| 2393 //%note jvm_r6 | |
| 2394 return (jint)hpi::read(fd, buf, nbytes); | |
| 2395 JVM_END | |
| 2396 | |
| 2397 | |
| 2398 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
| 2399 JVMWrapper2("JVM_Write (0x%x)", fd); | |
| 2400 | |
| 2401 //%note jvm_r6 | |
| 2402 return (jint)hpi::write(fd, buf, nbytes); | |
| 2403 JVM_END | |
| 2404 | |
| 2405 | |
| 2406 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
| 2407 JVMWrapper2("JVM_Available (0x%x)", fd); | |
| 2408 //%note jvm_r6 | |
| 2409 return hpi::available(fd, pbytes); | |
| 2410 JVM_END | |
| 2411 | |
| 2412 | |
| 2413 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
| 2414 JVMWrapper4("JVM_Lseek (0x%x, %Ld, %d)", fd, offset, whence); | |
| 2415 //%note jvm_r6 | |
| 2416 return hpi::lseek(fd, offset, whence); | |
| 2417 JVM_END | |
| 2418 | |
| 2419 | |
| 2420 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
| 2421 JVMWrapper3("JVM_SetLength (0x%x, %Ld)", fd, length); | |
| 2422 return hpi::ftruncate(fd, length); | |
| 2423 JVM_END | |
| 2424 | |
| 2425 | |
| 2426 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
| 2427 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
| 2428 //%note jvm_r6 | |
| 2429 return hpi::fsync(fd); | |
| 2430 JVM_END | |
| 2431 | |
| 2432 | |
| 2433 // Printing support ////////////////////////////////////////////////// | |
| 2434 extern "C" { | |
| 2435 | |
| 2436 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { | |
| 2437 // see bug 4399518, 4417214 | |
| 2438 if ((intptr_t)count <= 0) return -1; | |
| 2439 return vsnprintf(str, count, fmt, args); | |
| 2440 } | |
| 2441 | |
| 2442 | |
| 2443 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { | |
| 2444 va_list args; | |
| 2445 int len; | |
| 2446 va_start(args, fmt); | |
| 2447 len = jio_vsnprintf(str, count, fmt, args); | |
| 2448 va_end(args); | |
| 2449 return len; | |
| 2450 } | |
| 2451 | |
| 2452 | |
| 2453 int jio_fprintf(FILE* f, const char *fmt, ...) { | |
| 2454 int len; | |
| 2455 va_list args; | |
| 2456 va_start(args, fmt); | |
| 2457 len = jio_vfprintf(f, fmt, args); | |
| 2458 va_end(args); | |
| 2459 return len; | |
| 2460 } | |
| 2461 | |
| 2462 | |
| 2463 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { | |
| 2464 if (Arguments::vfprintf_hook() != NULL) { | |
| 2465 return Arguments::vfprintf_hook()(f, fmt, args); | |
| 2466 } else { | |
| 2467 return vfprintf(f, fmt, args); | |
| 2468 } | |
| 2469 } | |
| 2470 | |
| 2471 | |
| 2472 int jio_printf(const char *fmt, ...) { | |
| 2473 int len; | |
| 2474 va_list args; | |
| 2475 va_start(args, fmt); | |
| 2476 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
| 2477 va_end(args); | |
| 2478 return len; | |
| 2479 } | |
| 2480 | |
| 2481 | |
| 2482 // HotSpot specific jio method | |
| 2483 void jio_print(const char* s) { | |
| 2484 // Try to make this function as atomic as possible. | |
| 2485 if (Arguments::vfprintf_hook() != NULL) { | |
| 2486 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
| 2487 } else { | |
|
513
2328d1d3f8cf
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parents:
431
diff
changeset
|
2488 // Make an unused local variable to avoid warning from gcc 4.x compiler. |
|
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
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parents:
431
diff
changeset
|
2489 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
| 0 | 2490 } |
| 2491 } | |
| 2492 | |
| 2493 } // Extern C | |
| 2494 | |
| 2495 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
| 2496 | |
| 2497 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
| 2498 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
| 2499 // OSThread objects. The exception to this rule is when the target object is the thread | |
| 2500 // doing the operation, in which case we know that the thread won't exit until the | |
| 2501 // operation is done (all exits being voluntary). There are a few cases where it is | |
| 2502 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
| 2503 // you are alive. While these can still happen, they are not subject to deadlocks if | |
| 2504 // the lock is held while the operation occurs (this is not the case for suspend, for | |
| 2505 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
| 2506 // implementation is local to this file, we always lock Threads_lock for that one. | |
| 2507 | |
| 2508 static void thread_entry(JavaThread* thread, TRAPS) { | |
| 2509 HandleMark hm(THREAD); | |
| 2510 Handle obj(THREAD, thread->threadObj()); | |
| 2511 JavaValue result(T_VOID); | |
| 2512 JavaCalls::call_virtual(&result, | |
| 2513 obj, | |
| 2514 KlassHandle(THREAD, SystemDictionary::thread_klass()), | |
| 2515 vmSymbolHandles::run_method_name(), | |
| 2516 vmSymbolHandles::void_method_signature(), | |
| 2517 THREAD); | |
| 2518 } | |
| 2519 | |
| 2520 | |
| 2521 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
| 2522 JVMWrapper("JVM_StartThread"); | |
| 2523 JavaThread *native_thread = NULL; | |
| 2524 | |
| 2525 // We cannot hold the Threads_lock when we throw an exception, | |
| 2526 // due to rank ordering issues. Example: we might need to grab the | |
| 2527 // Heap_lock while we construct the exception. | |
| 2528 bool throw_illegal_thread_state = false; | |
| 2529 | |
| 2530 // We must release the Threads_lock before we can post a jvmti event | |
| 2531 // in Thread::start. | |
| 2532 { | |
| 2533 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
| 2534 // we operate. | |
| 2535 MutexLocker mu(Threads_lock); | |
| 2536 | |
| 2537 // Check to see if we're running a thread that's already exited or was | |
| 2538 // stopped (is_stillborn) or is still active (thread is not NULL). | |
| 2539 if (java_lang_Thread::is_stillborn(JNIHandles::resolve_non_null(jthread)) || | |
| 2540 java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)) != NULL) { | |
| 2541 throw_illegal_thread_state = true; | |
| 2542 } else { | |
| 2543 jlong size = | |
| 2544 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
| 2545 // Allocate the C++ Thread structure and create the native thread. The | |
| 2546 // stack size retrieved from java is signed, but the constructor takes | |
| 2547 // size_t (an unsigned type), so avoid passing negative values which would | |
| 2548 // result in really large stacks. | |
| 2549 size_t sz = size > 0 ? (size_t) size : 0; | |
| 2550 native_thread = new JavaThread(&thread_entry, sz); | |
| 2551 | |
| 2552 // At this point it may be possible that no osthread was created for the | |
| 2553 // JavaThread due to lack of memory. Check for this situation and throw | |
| 2554 // an exception if necessary. Eventually we may want to change this so | |
| 2555 // that we only grab the lock if the thread was created successfully - | |
| 2556 // then we can also do this check and throw the exception in the | |
| 2557 // JavaThread constructor. | |
| 2558 if (native_thread->osthread() != NULL) { | |
| 2559 // Note: the current thread is not being used within "prepare". | |
| 2560 native_thread->prepare(jthread); | |
| 2561 } | |
| 2562 } | |
| 2563 } | |
| 2564 | |
| 2565 if (throw_illegal_thread_state) { | |
| 2566 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
| 2567 } | |
| 2568 | |
| 2569 assert(native_thread != NULL, "Starting null thread?"); | |
| 2570 | |
| 2571 if (native_thread->osthread() == NULL) { | |
| 2572 // No one should hold a reference to the 'native_thread'. | |
| 2573 delete native_thread; | |
| 2574 if (JvmtiExport::should_post_resource_exhausted()) { | |
| 2575 JvmtiExport::post_resource_exhausted( | |
| 2576 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
| 2577 "unable to create new native thread"); | |
| 2578 } | |
| 2579 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
| 2580 "unable to create new native thread"); | |
| 2581 } | |
| 2582 | |
| 2583 Thread::start(native_thread); | |
| 2584 | |
| 2585 JVM_END | |
| 2586 | |
| 2587 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
| 2588 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
| 2589 // but is thought to be reliable and simple. In the case, where the receiver is the | |
| 2590 // save thread as the sender, no safepoint is needed. | |
| 2591 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) | |
| 2592 JVMWrapper("JVM_StopThread"); | |
| 2593 | |
| 2594 oop java_throwable = JNIHandles::resolve(throwable); | |
| 2595 if (java_throwable == NULL) { | |
| 2596 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 2597 } | |
| 2598 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2599 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
| 2600 Events::log("JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", receiver, (address)java_thread, throwable); | |
| 2601 // First check if thread already exited | |
| 2602 if (receiver != NULL) { | |
| 2603 // Check if exception is getting thrown at self (use oop equality, since the | |
| 2604 // target object might exit) | |
| 2605 if (java_thread == thread->threadObj()) { | |
| 2606 // This is a change from JDK 1.1, but JDK 1.2 will also do it: | |
| 2607 // NOTE (from JDK 1.2): this is done solely to prevent stopped | |
| 2608 // threads from being restarted. | |
| 2609 // Fix for 4314342, 4145910, perhaps others: it now doesn't have | |
| 2610 // any effect on the "liveness" of a thread; see | |
| 2611 // JVM_IsThreadAlive, below. | |
| 2612 if (java_throwable->is_a(SystemDictionary::threaddeath_klass())) { | |
| 2613 java_lang_Thread::set_stillborn(java_thread); | |
| 2614 } | |
| 2615 THROW_OOP(java_throwable); | |
| 2616 } else { | |
| 2617 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
| 2618 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
| 2619 } | |
| 2620 } | |
| 2621 JVM_END | |
| 2622 | |
| 2623 | |
| 2624 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
| 2625 JVMWrapper("JVM_IsThreadAlive"); | |
| 2626 | |
| 2627 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
| 2628 return java_lang_Thread::is_alive(thread_oop); | |
| 2629 JVM_END | |
| 2630 | |
| 2631 | |
| 2632 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
| 2633 JVMWrapper("JVM_SuspendThread"); | |
| 2634 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2635 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
| 2636 | |
| 2637 if (receiver != NULL) { | |
| 2638 // thread has run and has not exited (still on threads list) | |
| 2639 | |
| 2640 { | |
| 2641 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
| 2642 if (receiver->is_external_suspend()) { | |
| 2643 // Don't allow nested external suspend requests. We can't return | |
| 2644 // an error from this interface so just ignore the problem. | |
| 2645 return; | |
| 2646 } | |
| 2647 if (receiver->is_exiting()) { // thread is in the process of exiting | |
| 2648 return; | |
| 2649 } | |
| 2650 receiver->set_external_suspend(); | |
| 2651 } | |
| 2652 | |
| 2653 // java_suspend() will catch threads in the process of exiting | |
| 2654 // and will ignore them. | |
| 2655 receiver->java_suspend(); | |
| 2656 | |
| 2657 // It would be nice to have the following assertion in all the | |
| 2658 // time, but it is possible for a racing resume request to have | |
| 2659 // resumed this thread right after we suspended it. Temporarily | |
| 2660 // enable this assertion if you are chasing a different kind of | |
| 2661 // bug. | |
| 2662 // | |
| 2663 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
| 2664 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
| 2665 } | |
| 2666 JVM_END | |
| 2667 | |
| 2668 | |
| 2669 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
| 2670 JVMWrapper("JVM_ResumeThread"); | |
| 2671 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
| 2672 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
| 2673 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
| 2674 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
| 2675 // looks at it. | |
| 2676 MutexLocker ml(Threads_lock); | |
| 2677 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 2678 if (thr != NULL) { | |
| 2679 // the thread has run and is not in the process of exiting | |
| 2680 thr->java_resume(); | |
| 2681 } | |
| 2682 JVM_END | |
| 2683 | |
| 2684 | |
| 2685 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
| 2686 JVMWrapper("JVM_SetThreadPriority"); | |
| 2687 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 2688 MutexLocker ml(Threads_lock); | |
| 2689 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2690 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
| 2691 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 2692 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
| 2693 Thread::set_priority(thr, (ThreadPriority)prio); | |
| 2694 } | |
| 2695 JVM_END | |
| 2696 | |
| 2697 | |
| 2698 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
| 2699 JVMWrapper("JVM_Yield"); | |
| 2700 if (os::dont_yield()) return; | |
| 2701 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. | |
| 2702 // Critical for similar threading behaviour | |
| 2703 if (ConvertYieldToSleep) { | |
| 2704 os::sleep(thread, MinSleepInterval, false); | |
| 2705 } else { | |
| 2706 os::yield(); | |
| 2707 } | |
| 2708 JVM_END | |
| 2709 | |
| 2710 | |
| 2711 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
| 2712 JVMWrapper("JVM_Sleep"); | |
| 2713 | |
| 2714 if (millis < 0) { | |
| 2715 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
| 2716 } | |
| 2717 | |
| 2718 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
| 2719 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 2720 } | |
| 2721 | |
| 2722 // Save current thread state and restore it at the end of this block. | |
| 2723 // And set new thread state to SLEEPING. | |
| 2724 JavaThreadSleepState jtss(thread); | |
| 2725 | |
| 2726 if (millis == 0) { | |
| 2727 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
| 2728 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
| 2729 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
| 2730 // for SOLARIS | |
| 2731 if (ConvertSleepToYield) { | |
| 2732 os::yield(); | |
| 2733 } else { | |
| 2734 ThreadState old_state = thread->osthread()->get_state(); | |
| 2735 thread->osthread()->set_state(SLEEPING); | |
| 2736 os::sleep(thread, MinSleepInterval, false); | |
| 2737 thread->osthread()->set_state(old_state); | |
| 2738 } | |
| 2739 } else { | |
| 2740 ThreadState old_state = thread->osthread()->get_state(); | |
| 2741 thread->osthread()->set_state(SLEEPING); | |
| 2742 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
| 2743 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
| 2744 // us while we were sleeping. We do not overwrite those. | |
| 2745 if (!HAS_PENDING_EXCEPTION) { | |
| 2746 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() | |
| 2747 // to properly restore the thread state. That's likely wrong. | |
| 2748 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 2749 } | |
| 2750 } | |
| 2751 thread->osthread()->set_state(old_state); | |
| 2752 } | |
| 2753 JVM_END | |
| 2754 | |
| 2755 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
| 2756 JVMWrapper("JVM_CurrentThread"); | |
| 2757 oop jthread = thread->threadObj(); | |
| 2758 assert (thread != NULL, "no current thread!"); | |
| 2759 return JNIHandles::make_local(env, jthread); | |
| 2760 JVM_END | |
| 2761 | |
| 2762 | |
| 2763 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
| 2764 JVMWrapper("JVM_CountStackFrames"); | |
| 2765 | |
| 2766 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 2767 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2768 bool throw_illegal_thread_state = false; | |
| 2769 int count = 0; | |
| 2770 | |
| 2771 { | |
| 2772 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 2773 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 2774 // acquire of the lock | |
| 2775 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 2776 | |
| 2777 if (thr == NULL) { | |
| 2778 // do nothing | |
| 2779 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
| 2780 // Check whether this java thread has been suspended already. If not, throws | |
| 2781 // IllegalThreadStateException. We defer to throw that exception until | |
| 2782 // Threads_lock is released since loading exception class has to leave VM. | |
| 2783 // The correct way to test a thread is actually suspended is | |
| 2784 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
| 2785 // the Threads_lock. The above tests are sufficient for our purposes | |
| 2786 // provided the walkability of the stack is stable - which it isn't | |
| 2787 // 100% but close enough for most practical purposes. | |
| 2788 throw_illegal_thread_state = true; | |
| 2789 } else { | |
| 2790 // Count all java activation, i.e., number of vframes | |
| 2791 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
| 2792 // Native frames are not counted | |
| 2793 if (!vfst.method()->is_native()) count++; | |
| 2794 } | |
| 2795 } | |
| 2796 } | |
| 2797 | |
| 2798 if (throw_illegal_thread_state) { | |
| 2799 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
| 2800 "this thread is not suspended"); | |
| 2801 } | |
| 2802 return count; | |
| 2803 JVM_END | |
| 2804 | |
| 2805 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
| 2806 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
| 2807 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
| 2808 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
| 2809 // outside the critical section. Threads_lock is hot so we want to minimize | |
| 2810 // the hold-time. A cleaner interface would be to decompose interrupt into | |
| 2811 // two steps. The 1st phase, performed under Threads_lock, would return | |
| 2812 // a closure that'd be invoked after Threads_lock was dropped. | |
| 2813 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
| 2814 // admit spurious wakeups. | |
| 2815 | |
| 2816 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
| 2817 JVMWrapper("JVM_Interrupt"); | |
| 2818 | |
| 2819 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 2820 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2821 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 2822 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 2823 // acquire of the lock | |
| 2824 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 2825 if (thr != NULL) { | |
| 2826 Thread::interrupt(thr); | |
| 2827 } | |
| 2828 JVM_END | |
| 2829 | |
| 2830 | |
| 2831 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
| 2832 JVMWrapper("JVM_IsInterrupted"); | |
| 2833 | |
| 2834 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 2835 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2836 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 2837 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 2838 // acquire of the lock | |
| 2839 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 2840 if (thr == NULL) { | |
| 2841 return JNI_FALSE; | |
| 2842 } else { | |
| 2843 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
| 2844 } | |
| 2845 JVM_END | |
| 2846 | |
| 2847 | |
| 2848 // Return true iff the current thread has locked the object passed in | |
| 2849 | |
| 2850 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
| 2851 JVMWrapper("JVM_HoldsLock"); | |
| 2852 assert(THREAD->is_Java_thread(), "sanity check"); | |
| 2853 if (obj == NULL) { | |
| 2854 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
| 2855 } | |
| 2856 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
| 2857 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
| 2858 JVM_END | |
| 2859 | |
| 2860 | |
| 2861 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
| 2862 JVMWrapper("JVM_DumpAllStacks"); | |
| 2863 VM_PrintThreads op; | |
| 2864 VMThread::execute(&op); | |
| 2865 if (JvmtiExport::should_post_data_dump()) { | |
| 2866 JvmtiExport::post_data_dump(); | |
| 2867 } | |
| 2868 JVM_END | |
| 2869 | |
| 2870 | |
| 2871 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
| 2872 | |
| 2873 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
| 2874 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
| 2875 if (jthread->privileged_stack_top() == NULL) return false; | |
| 2876 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
| 2877 oop loader = jthread->privileged_stack_top()->class_loader(); | |
| 2878 if (loader == NULL) return true; | |
| 2879 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
| 2880 if (trusted) return true; | |
| 2881 } | |
| 2882 return false; | |
| 2883 } | |
| 2884 | |
| 2885 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
| 2886 JVMWrapper("JVM_CurrentLoadedClass"); | |
| 2887 ResourceMark rm(THREAD); | |
| 2888 | |
| 2889 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 2890 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 2891 bool trusted = is_trusted_frame(thread, &vfst); | |
| 2892 if (trusted) return NULL; | |
| 2893 | |
| 2894 methodOop m = vfst.method(); | |
| 2895 if (!m->is_native()) { | |
| 2896 klassOop holder = m->method_holder(); | |
| 2897 oop loader = instanceKlass::cast(holder)->class_loader(); | |
| 2898 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { | |
| 2899 return (jclass) JNIHandles::make_local(env, Klass::cast(holder)->java_mirror()); | |
| 2900 } | |
| 2901 } | |
| 2902 } | |
| 2903 return NULL; | |
| 2904 JVM_END | |
| 2905 | |
| 2906 | |
| 2907 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
| 2908 JVMWrapper("JVM_CurrentClassLoader"); | |
| 2909 ResourceMark rm(THREAD); | |
| 2910 | |
| 2911 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 2912 | |
| 2913 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 2914 bool trusted = is_trusted_frame(thread, &vfst); | |
| 2915 if (trusted) return NULL; | |
| 2916 | |
| 2917 methodOop m = vfst.method(); | |
| 2918 if (!m->is_native()) { | |
| 2919 klassOop holder = m->method_holder(); | |
| 2920 assert(holder->is_klass(), "just checking"); | |
| 2921 oop loader = instanceKlass::cast(holder)->class_loader(); | |
| 2922 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { | |
| 2923 return JNIHandles::make_local(env, loader); | |
| 2924 } | |
| 2925 } | |
| 2926 } | |
| 2927 return NULL; | |
| 2928 JVM_END | |
| 2929 | |
| 2930 | |
| 2931 // Utility object for collecting method holders walking down the stack | |
| 2932 class KlassLink: public ResourceObj { | |
| 2933 public: | |
| 2934 KlassHandle klass; | |
| 2935 KlassLink* next; | |
| 2936 | |
| 2937 KlassLink(KlassHandle k) { klass = k; next = NULL; } | |
| 2938 }; | |
| 2939 | |
| 2940 | |
| 2941 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
| 2942 JVMWrapper("JVM_GetClassContext"); | |
| 2943 ResourceMark rm(THREAD); | |
| 2944 JvmtiVMObjectAllocEventCollector oam; | |
| 2945 // Collect linked list of (handles to) method holders | |
| 2946 KlassLink* first = NULL; | |
| 2947 KlassLink* last = NULL; | |
| 2948 int depth = 0; | |
| 2949 | |
| 2950 for(vframeStream vfst(thread); !vfst.at_end(); vfst.security_get_caller_frame(1)) { | |
| 2951 // Native frames are not returned | |
| 2952 if (!vfst.method()->is_native()) { | |
| 2953 klassOop holder = vfst.method()->method_holder(); | |
| 2954 assert(holder->is_klass(), "just checking"); | |
| 2955 depth++; | |
| 2956 KlassLink* l = new KlassLink(KlassHandle(thread, holder)); | |
| 2957 if (first == NULL) { | |
| 2958 first = last = l; | |
| 2959 } else { | |
| 2960 last->next = l; | |
| 2961 last = l; | |
| 2962 } | |
| 2963 } | |
| 2964 } | |
| 2965 | |
| 2966 // Create result array of type [Ljava/lang/Class; | |
| 2967 objArrayOop result = oopFactory::new_objArray(SystemDictionary::class_klass(), depth, CHECK_NULL); | |
| 2968 // Fill in mirrors corresponding to method holders | |
| 2969 int index = 0; | |
| 2970 while (first != NULL) { | |
| 2971 result->obj_at_put(index++, Klass::cast(first->klass())->java_mirror()); | |
| 2972 first = first->next; | |
| 2973 } | |
| 2974 assert(index == depth, "just checking"); | |
| 2975 | |
| 2976 return (jobjectArray) JNIHandles::make_local(env, result); | |
| 2977 JVM_END | |
| 2978 | |
| 2979 | |
| 2980 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
| 2981 JVMWrapper("JVM_ClassDepth"); | |
| 2982 ResourceMark rm(THREAD); | |
| 2983 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 2984 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
| 2985 | |
| 2986 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
| 2987 symbolHandle class_name_sym = | |
| 2988 symbolHandle(THREAD, SymbolTable::probe(str, (int)strlen(str))); | |
| 2989 if (class_name_sym.is_null()) { | |
| 2990 return -1; | |
| 2991 } | |
| 2992 | |
| 2993 int depth = 0; | |
| 2994 | |
| 2995 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 2996 if (!vfst.method()->is_native()) { | |
| 2997 klassOop holder = vfst.method()->method_holder(); | |
| 2998 assert(holder->is_klass(), "just checking"); | |
| 2999 if (instanceKlass::cast(holder)->name() == class_name_sym()) { | |
| 3000 return depth; | |
| 3001 } | |
| 3002 depth++; | |
| 3003 } | |
| 3004 } | |
| 3005 return -1; | |
| 3006 JVM_END | |
| 3007 | |
| 3008 | |
| 3009 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
| 3010 JVMWrapper("JVM_ClassLoaderDepth"); | |
| 3011 ResourceMark rm(THREAD); | |
| 3012 int depth = 0; | |
| 3013 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3014 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
| 3015 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3016 if (trusted) return -1; | |
| 3017 | |
| 3018 methodOop m = vfst.method(); | |
| 3019 if (!m->is_native()) { | |
| 3020 klassOop holder = m->method_holder(); | |
| 3021 assert(holder->is_klass(), "just checking"); | |
| 3022 oop loader = instanceKlass::cast(holder)->class_loader(); | |
| 3023 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { | |
| 3024 return depth; | |
| 3025 } | |
| 3026 depth++; | |
| 3027 } | |
| 3028 } | |
| 3029 return -1; | |
| 3030 JVM_END | |
| 3031 | |
| 3032 | |
| 3033 // java.lang.Package //////////////////////////////////////////////////////////////// | |
| 3034 | |
| 3035 | |
| 3036 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
| 3037 JVMWrapper("JVM_GetSystemPackage"); | |
| 3038 ResourceMark rm(THREAD); | |
| 3039 JvmtiVMObjectAllocEventCollector oam; | |
| 3040 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
| 3041 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
| 3042 return (jstring) JNIHandles::make_local(result); | |
| 3043 JVM_END | |
| 3044 | |
| 3045 | |
| 3046 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
| 3047 JVMWrapper("JVM_GetSystemPackages"); | |
| 3048 JvmtiVMObjectAllocEventCollector oam; | |
| 3049 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
| 3050 return (jobjectArray) JNIHandles::make_local(result); | |
| 3051 JVM_END | |
| 3052 | |
| 3053 | |
| 3054 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
| 3055 | |
| 3056 bool force_verify_field_access(klassOop current_class, klassOop field_class, AccessFlags access, bool classloader_only) { | |
| 3057 if (current_class == NULL) { | |
| 3058 return true; | |
| 3059 } | |
| 3060 if ((current_class == field_class) || access.is_public()) { | |
| 3061 return true; | |
| 3062 } | |
| 3063 | |
| 3064 if (access.is_protected()) { | |
| 3065 // See if current_class is a subclass of field_class | |
| 3066 if (Klass::cast(current_class)->is_subclass_of(field_class)) { | |
| 3067 return true; | |
| 3068 } | |
| 3069 } | |
| 3070 | |
| 3071 return (!access.is_private() && instanceKlass::cast(current_class)->is_same_class_package(field_class)); | |
| 3072 } | |
| 3073 | |
| 3074 | |
| 3075 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
| 3076 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
| 3077 JVMWrapper("JVM_AllocateNewObject"); | |
| 3078 JvmtiVMObjectAllocEventCollector oam; | |
| 3079 // Receiver is not used | |
| 3080 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
| 3081 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
| 3082 | |
| 3083 // Cannot instantiate primitive types | |
| 3084 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
| 3085 ResourceMark rm(THREAD); | |
| 3086 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3087 } | |
| 3088 | |
| 3089 // Arrays not allowed here, must use JVM_AllocateNewArray | |
| 3090 if (Klass::cast(java_lang_Class::as_klassOop(curr_mirror))->oop_is_javaArray() || | |
| 3091 Klass::cast(java_lang_Class::as_klassOop(init_mirror))->oop_is_javaArray()) { | |
| 3092 ResourceMark rm(THREAD); | |
| 3093 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3094 } | |
| 3095 | |
| 3096 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_klassOop(curr_mirror)); | |
| 3097 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_klassOop(init_mirror)); | |
| 3098 | |
| 3099 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
| 3100 | |
| 3101 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
| 3102 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
| 3103 | |
| 3104 // Make sure klass is initialized, since we are about to instantiate one of them. | |
| 3105 curr_klass->initialize(CHECK_NULL); | |
| 3106 | |
| 3107 methodHandle m (THREAD, | |
| 3108 init_klass->find_method(vmSymbols::object_initializer_name(), | |
| 3109 vmSymbols::void_method_signature())); | |
| 3110 if (m.is_null()) { | |
| 3111 ResourceMark rm(THREAD); | |
| 3112 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
| 3113 methodOopDesc::name_and_sig_as_C_string(Klass::cast(init_klass()), | |
| 3114 vmSymbols::object_initializer_name(), | |
| 3115 vmSymbols::void_method_signature())); | |
| 3116 } | |
| 3117 | |
| 3118 if (curr_klass == init_klass && !m->is_public()) { | |
| 3119 // Calling the constructor for class 'curr_klass'. | |
| 3120 // Only allow calls to a public no-arg constructor. | |
| 3121 // This path corresponds to creating an Externalizable object. | |
| 3122 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3123 } | |
| 3124 | |
| 3125 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
| 3126 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
| 3127 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3128 } | |
| 3129 | |
| 3130 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
| 3131 // Call constructor m. This might call a constructor higher up in the hierachy | |
| 3132 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
| 3133 | |
| 3134 return JNIHandles::make_local(obj()); | |
| 3135 JVM_END | |
| 3136 | |
| 3137 | |
| 3138 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
| 3139 JVMWrapper("JVM_AllocateNewArray"); | |
| 3140 JvmtiVMObjectAllocEventCollector oam; | |
| 3141 oop mirror = JNIHandles::resolve_non_null(currClass); | |
| 3142 | |
| 3143 if (java_lang_Class::is_primitive(mirror)) { | |
| 3144 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3145 } | |
| 3146 klassOop k = java_lang_Class::as_klassOop(mirror); | |
| 3147 oop result; | |
| 3148 | |
| 3149 if (k->klass_part()->oop_is_typeArray()) { | |
| 3150 // typeArray | |
| 3151 result = typeArrayKlass::cast(k)->allocate(length, CHECK_NULL); | |
| 3152 } else if (k->klass_part()->oop_is_objArray()) { | |
| 3153 // objArray | |
| 3154 objArrayKlassHandle oak(THREAD, k); | |
| 3155 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) | |
| 3156 result = oak->allocate(length, CHECK_NULL); | |
| 3157 } else { | |
| 3158 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3159 } | |
| 3160 return JNIHandles::make_local(env, result); | |
| 3161 JVM_END | |
| 3162 | |
| 3163 | |
| 3164 // Return the first non-null class loader up the execution stack, or null | |
| 3165 // if only code from the null class loader is on the stack. | |
| 3166 | |
| 3167 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
| 3168 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3169 // UseNewReflection | |
| 3170 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
| 3171 klassOop holder = vfst.method()->method_holder(); | |
| 3172 oop loader = instanceKlass::cast(holder)->class_loader(); | |
| 3173 if (loader != NULL) { | |
| 3174 return JNIHandles::make_local(env, loader); | |
| 3175 } | |
| 3176 } | |
| 3177 return NULL; | |
| 3178 JVM_END | |
| 3179 | |
| 3180 | |
| 3181 // Load a class relative to the most recent class on the stack with a non-null | |
| 3182 // classloader. | |
| 3183 // This function has been deprecated and should not be considered part of the | |
| 3184 // specified JVM interface. | |
| 3185 | |
| 3186 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
| 3187 jclass currClass, jstring currClassName)) | |
| 3188 JVMWrapper("JVM_LoadClass0"); | |
| 3189 // Receiver is not used | |
| 3190 ResourceMark rm(THREAD); | |
| 3191 | |
| 3192 // Class name argument is not guaranteed to be in internal format | |
| 3193 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
| 3194 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
| 3195 | |
| 3196 const char* str = java_lang_String::as_utf8_string(string()); | |
| 3197 | |
| 3198 if (str == NULL || (int)strlen(str) > symbolOopDesc::max_length()) { | |
| 3199 // It's impossible to create this class; the name cannot fit | |
| 3200 // into the constant pool. | |
| 3201 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
| 3202 } | |
| 3203 | |
| 3204 symbolHandle name = oopFactory::new_symbol_handle(str, CHECK_NULL); | |
| 3205 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); | |
| 3206 // Find the most recent class on the stack with a non-null classloader | |
| 3207 oop loader = NULL; | |
| 3208 oop protection_domain = NULL; | |
| 3209 if (curr_klass.is_null()) { | |
| 3210 for (vframeStream vfst(thread); | |
| 3211 !vfst.at_end() && loader == NULL; | |
| 3212 vfst.next()) { | |
| 3213 if (!vfst.method()->is_native()) { | |
| 3214 klassOop holder = vfst.method()->method_holder(); | |
| 3215 loader = instanceKlass::cast(holder)->class_loader(); | |
| 3216 protection_domain = instanceKlass::cast(holder)->protection_domain(); | |
| 3217 } | |
| 3218 } | |
| 3219 } else { | |
| 3220 klassOop curr_klass_oop = java_lang_Class::as_klassOop(curr_klass()); | |
| 3221 loader = instanceKlass::cast(curr_klass_oop)->class_loader(); | |
| 3222 protection_domain = instanceKlass::cast(curr_klass_oop)->protection_domain(); | |
| 3223 } | |
| 3224 Handle h_loader(THREAD, loader); | |
| 3225 Handle h_prot (THREAD, protection_domain); | |
|
657
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6603316: Improve instrumentation for classes loaded at startup
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579
diff
changeset
|
3226 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
|
3227 false, thread); |
|
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3228 if (TraceClassResolution && result != NULL) { |
|
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3229 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
|
3230 } |
|
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acorn
parents:
579
diff
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|
3231 return result; |
| 0 | 3232 JVM_END |
| 3233 | |
| 3234 | |
| 3235 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
| 3236 | |
| 3237 | |
| 3238 // resolve array handle and check arguments | |
| 3239 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
| 3240 if (arr == NULL) { | |
| 3241 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 3242 } | |
| 3243 oop a = JNIHandles::resolve_non_null(arr); | |
| 3244 if (!a->is_javaArray() || (type_array_only && !a->is_typeArray())) { | |
| 3245 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); | |
| 3246 } | |
| 3247 return arrayOop(a); | |
| 3248 } | |
| 3249 | |
| 3250 | |
| 3251 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
| 3252 JVMWrapper("JVM_GetArrayLength"); | |
| 3253 arrayOop a = check_array(env, arr, false, CHECK_0); | |
| 3254 return a->length(); | |
| 3255 JVM_END | |
| 3256 | |
| 3257 | |
| 3258 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
| 3259 JVMWrapper("JVM_Array_Get"); | |
| 3260 JvmtiVMObjectAllocEventCollector oam; | |
| 3261 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
| 3262 jvalue value; | |
| 3263 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
| 3264 oop box = Reflection::box(&value, type, CHECK_NULL); | |
| 3265 return JNIHandles::make_local(env, box); | |
| 3266 JVM_END | |
| 3267 | |
| 3268 | |
| 3269 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
| 3270 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
| 3271 jvalue value; | |
| 3272 value.i = 0; // to initialize value before getting used in CHECK | |
| 3273 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
| 3274 assert(a->is_typeArray(), "just checking"); | |
| 3275 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
| 3276 BasicType wide_type = (BasicType) wCode; | |
| 3277 if (type != wide_type) { | |
| 3278 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
| 3279 } | |
| 3280 return value; | |
| 3281 JVM_END | |
| 3282 | |
| 3283 | |
| 3284 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
| 3285 JVMWrapper("JVM_SetArrayElement"); | |
| 3286 arrayOop a = check_array(env, arr, false, CHECK); | |
| 3287 oop box = JNIHandles::resolve(val); | |
| 3288 jvalue value; | |
| 3289 value.i = 0; // to initialize value before getting used in CHECK | |
| 3290 BasicType value_type; | |
| 3291 if (a->is_objArray()) { | |
| 3292 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
| 3293 value_type = Reflection::unbox_for_regular_object(box, &value); | |
| 3294 } else { | |
| 3295 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
| 3296 } | |
| 3297 Reflection::array_set(&value, a, index, value_type, CHECK); | |
| 3298 JVM_END | |
| 3299 | |
| 3300 | |
| 3301 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
| 3302 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
| 3303 arrayOop a = check_array(env, arr, true, CHECK); | |
| 3304 assert(a->is_typeArray(), "just checking"); | |
| 3305 BasicType value_type = (BasicType) vCode; | |
| 3306 Reflection::array_set(&v, a, index, value_type, CHECK); | |
| 3307 JVM_END | |
| 3308 | |
| 3309 | |
| 3310 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
| 3311 JVMWrapper("JVM_NewArray"); | |
| 3312 JvmtiVMObjectAllocEventCollector oam; | |
| 3313 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3314 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
| 3315 return JNIHandles::make_local(env, result); | |
| 3316 JVM_END | |
| 3317 | |
| 3318 | |
| 3319 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
| 3320 JVMWrapper("JVM_NewMultiArray"); | |
| 3321 JvmtiVMObjectAllocEventCollector oam; | |
| 3322 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
| 3323 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3324 assert(dim_array->is_typeArray(), "just checking"); | |
| 3325 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
| 3326 return JNIHandles::make_local(env, result); | |
| 3327 JVM_END | |
| 3328 | |
| 3329 | |
| 3330 // Networking library support //////////////////////////////////////////////////////////////////// | |
| 3331 | |
| 3332 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
| 3333 JVMWrapper("JVM_InitializeSocketLibrary"); | |
| 3334 return hpi::initialize_socket_library(); | |
| 3335 JVM_END | |
| 3336 | |
| 3337 | |
| 3338 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
| 3339 JVMWrapper("JVM_Socket"); | |
| 3340 return hpi::socket(domain, type, protocol); | |
| 3341 JVM_END | |
| 3342 | |
| 3343 | |
| 3344 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
| 3345 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
| 3346 //%note jvm_r6 | |
| 3347 return hpi::socket_close(fd); | |
| 3348 JVM_END | |
| 3349 | |
| 3350 | |
| 3351 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
| 3352 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
| 3353 //%note jvm_r6 | |
| 3354 return hpi::socket_shutdown(fd, howto); | |
| 3355 JVM_END | |
| 3356 | |
| 3357 | |
| 3358 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3359 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
| 3360 //%note jvm_r6 | |
| 3361 return hpi::recv(fd, buf, nBytes, flags); | |
| 3362 JVM_END | |
| 3363 | |
| 3364 | |
| 3365 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3366 JVMWrapper2("JVM_Send (0x%x)", fd); | |
| 3367 //%note jvm_r6 | |
| 3368 return hpi::send(fd, buf, nBytes, flags); | |
| 3369 JVM_END | |
| 3370 | |
| 3371 | |
| 3372 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
| 3373 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
| 3374 //%note jvm_r6 | |
| 3375 return hpi::timeout(fd, timeout); | |
| 3376 JVM_END | |
| 3377 | |
| 3378 | |
| 3379 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
| 3380 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
| 3381 //%note jvm_r6 | |
| 3382 return hpi::listen(fd, count); | |
| 3383 JVM_END | |
| 3384 | |
| 3385 | |
| 3386 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
| 3387 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
| 3388 //%note jvm_r6 | |
| 3389 return hpi::connect(fd, him, len); | |
| 3390 JVM_END | |
| 3391 | |
| 3392 | |
| 3393 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
| 3394 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
| 3395 //%note jvm_r6 | |
| 3396 return hpi::bind(fd, him, len); | |
| 3397 JVM_END | |
| 3398 | |
| 3399 | |
| 3400 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
| 3401 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
| 3402 //%note jvm_r6 | |
| 3403 return hpi::accept(fd, him, (int *)len); | |
| 3404 JVM_END | |
| 3405 | |
| 3406 | |
| 3407 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
| 3408 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
| 3409 //%note jvm_r6 | |
| 3410 return hpi::recvfrom(fd, buf, nBytes, flags, from, fromlen); | |
| 3411 JVM_END | |
| 3412 | |
| 3413 | |
| 3414 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
| 3415 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
| 3416 //%note jvm_r6 | |
| 3417 return hpi::get_sock_name(fd, him, len); | |
| 3418 JVM_END | |
| 3419 | |
| 3420 | |
| 3421 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
| 3422 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
| 3423 //%note jvm_r6 | |
| 3424 return hpi::sendto(fd, buf, len, flags, to, tolen); | |
| 3425 JVM_END | |
| 3426 | |
| 3427 | |
| 3428 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
| 3429 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
| 3430 //%note jvm_r6 | |
| 3431 return hpi::socket_available(fd, pbytes); | |
| 3432 JVM_END | |
| 3433 | |
| 3434 | |
| 3435 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
| 3436 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
| 3437 //%note jvm_r6 | |
| 3438 return hpi::get_sock_opt(fd, level, optname, optval, optlen); | |
| 3439 JVM_END | |
| 3440 | |
| 3441 | |
| 3442 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
| 3443 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
| 3444 //%note jvm_r6 | |
| 3445 return hpi::set_sock_opt(fd, level, optname, optval, optlen); | |
| 3446 JVM_END | |
| 3447 | |
| 3448 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) | |
| 3449 JVMWrapper("JVM_GetHostName"); | |
| 3450 return hpi::get_host_name(name, namelen); | |
| 3451 JVM_END | |
| 3452 | |
| 3453 #ifdef _WINDOWS | |
| 3454 | |
| 3455 JVM_LEAF(struct hostent*, JVM_GetHostByAddr(const char* name, int len, int type)) | |
| 3456 JVMWrapper("JVM_GetHostByAddr"); | |
| 3457 return hpi::get_host_by_addr(name, len, type); | |
| 3458 JVM_END | |
| 3459 | |
| 3460 | |
| 3461 JVM_LEAF(struct hostent*, JVM_GetHostByName(char* name)) | |
| 3462 JVMWrapper("JVM_GetHostByName"); | |
| 3463 return hpi::get_host_by_name(name); | |
| 3464 JVM_END | |
| 3465 | |
| 3466 | |
| 3467 JVM_LEAF(struct protoent*, JVM_GetProtoByName(char* name)) | |
| 3468 JVMWrapper("JVM_GetProtoByName"); | |
| 3469 return hpi::get_proto_by_name(name); | |
| 3470 JVM_END | |
| 3471 | |
| 3472 #endif | |
| 3473 | |
| 3474 // Library support /////////////////////////////////////////////////////////////////////////// | |
| 3475 | |
| 3476 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
| 3477 //%note jvm_ct | |
| 3478 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
| 3479 char ebuf[1024]; | |
| 3480 void *load_result; | |
| 3481 { | |
| 3482 ThreadToNativeFromVM ttnfvm(thread); | |
| 3483 load_result = hpi::dll_load(name, ebuf, sizeof ebuf); | |
| 3484 } | |
| 3485 if (load_result == NULL) { | |
| 3486 char msg[1024]; | |
| 3487 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
| 3488 // Since 'ebuf' may contain a string encoded using | |
| 3489 // platform encoding scheme, we need to pass | |
| 3490 // Exceptions::unsafe_to_utf8 to the new_exception method | |
| 3491 // as the last argument. See bug 6367357. | |
| 3492 Handle h_exception = | |
| 3493 Exceptions::new_exception(thread, | |
| 3494 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
| 3495 msg, Exceptions::unsafe_to_utf8); | |
| 3496 | |
| 3497 THROW_HANDLE_0(h_exception); | |
| 3498 } | |
| 3499 return load_result; | |
| 3500 JVM_END | |
| 3501 | |
| 3502 | |
| 3503 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
| 3504 JVMWrapper("JVM_UnloadLibrary"); | |
| 3505 hpi::dll_unload(handle); | |
| 3506 JVM_END | |
| 3507 | |
| 3508 | |
| 3509 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
| 3510 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
| 3511 return hpi::dll_lookup(handle, name); | |
| 3512 JVM_END | |
| 3513 | |
| 3514 // Floating point support //////////////////////////////////////////////////////////////////// | |
| 3515 | |
| 3516 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
| 3517 JVMWrapper("JVM_IsNaN"); | |
| 3518 return g_isnan(a); | |
| 3519 JVM_END | |
| 3520 | |
| 3521 | |
| 3522 | |
| 3523 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
| 3524 | |
| 3525 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
| 3526 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
| 3527 return Threads::is_supported_jni_version_including_1_1(version); | |
| 3528 JVM_END | |
| 3529 | |
| 3530 | |
| 3531 // String support /////////////////////////////////////////////////////////////////////////// | |
| 3532 | |
| 3533 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
| 3534 JVMWrapper("JVM_InternString"); | |
| 3535 JvmtiVMObjectAllocEventCollector oam; | |
| 3536 if (str == NULL) return NULL; | |
| 3537 oop string = JNIHandles::resolve_non_null(str); | |
| 3538 oop result = StringTable::intern(string, CHECK_NULL); | |
| 3539 return (jstring) JNIHandles::make_local(env, result); | |
| 3540 JVM_END | |
| 3541 | |
| 3542 | |
| 3543 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
| 3544 | |
| 3545 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
| 3546 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
| 3547 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
| 3548 // that only works with java threads. | |
| 3549 | |
| 3550 | |
| 3551 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
| 3552 VM_Exit::block_if_vm_exited(); | |
| 3553 JVMWrapper("JVM_RawMonitorCreate"); | |
| 3554 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
| 3555 } | |
| 3556 | |
| 3557 | |
| 3558 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
| 3559 VM_Exit::block_if_vm_exited(); | |
| 3560 JVMWrapper("JVM_RawMonitorDestroy"); | |
| 3561 delete ((Mutex*) mon); | |
| 3562 } | |
| 3563 | |
| 3564 | |
| 3565 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
| 3566 VM_Exit::block_if_vm_exited(); | |
| 3567 JVMWrapper("JVM_RawMonitorEnter"); | |
| 3568 ((Mutex*) mon)->jvm_raw_lock(); | |
| 3569 return 0; | |
| 3570 } | |
| 3571 | |
| 3572 | |
| 3573 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
| 3574 VM_Exit::block_if_vm_exited(); | |
| 3575 JVMWrapper("JVM_RawMonitorExit"); | |
| 3576 ((Mutex*) mon)->jvm_raw_unlock(); | |
| 3577 } | |
| 3578 | |
| 3579 | |
| 3580 // Support for Serialization | |
| 3581 | |
| 3582 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
| 3583 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
| 3584 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
| 3585 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
| 3586 | |
| 3587 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
| 3588 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
| 3589 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
| 3590 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
| 3591 | |
| 3592 | |
| 3593 void initialize_converter_functions() { | |
| 3594 if (JDK_Version::is_gte_jdk14x_version()) { | |
| 3595 // These functions only exist for compatibility with 1.3.1 and earlier | |
| 3596 return; | |
| 3597 } | |
| 3598 | |
| 3599 // called from universe_post_init() | |
| 3600 assert( | |
| 3601 int_bits_to_float_fn == NULL && | |
| 3602 long_bits_to_double_fn == NULL && | |
| 3603 float_to_int_bits_fn == NULL && | |
| 3604 double_to_long_bits_fn == NULL , | |
| 3605 "initialization done twice" | |
| 3606 ); | |
| 3607 // initialize | |
| 3608 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
| 3609 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
| 3610 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
| 3611 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
| 3612 // verify | |
| 3613 assert( | |
| 3614 int_bits_to_float_fn != NULL && | |
| 3615 long_bits_to_double_fn != NULL && | |
| 3616 float_to_int_bits_fn != NULL && | |
| 3617 double_to_long_bits_fn != NULL , | |
| 3618 "initialization failed" | |
| 3619 ); | |
| 3620 } | |
| 3621 | |
| 3622 | |
| 3623 // Serialization | |
| 3624 JVM_ENTRY(void, JVM_SetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
| 3625 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
| 3626 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
| 3627 | |
| 3628 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
| 3629 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
| 3630 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
| 3631 oop o = JNIHandles::resolve(obj); | |
| 3632 | |
| 3633 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
| 3634 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 3635 } | |
| 3636 | |
| 3637 jsize nfids = fids->length(); | |
| 3638 if (nfids == 0) return; | |
| 3639 | |
| 3640 if (tcodes->length() < nfids) { | |
| 3641 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
| 3642 } | |
| 3643 | |
| 3644 jsize off = 0; | |
| 3645 /* loop through fields, setting values */ | |
| 3646 for (jsize i = 0; i < nfids; i++) { | |
| 3647 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
| 3648 int field_offset; | |
| 3649 if (fid != NULL) { | |
| 3650 // NULL is a legal value for fid, but retrieving the field offset | |
| 3651 // trigger assertion in that case | |
| 3652 field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 3653 } | |
| 3654 | |
| 3655 switch (tcodes->char_at(i)) { | |
| 3656 case 'Z': | |
| 3657 if (fid != NULL) { | |
| 3658 jboolean val = (dbuf->byte_at(off) != 0) ? JNI_TRUE : JNI_FALSE; | |
| 3659 o->bool_field_put(field_offset, val); | |
| 3660 } | |
| 3661 off++; | |
| 3662 break; | |
| 3663 | |
| 3664 case 'B': | |
| 3665 if (fid != NULL) { | |
| 3666 o->byte_field_put(field_offset, dbuf->byte_at(off)); | |
| 3667 } | |
| 3668 off++; | |
| 3669 break; | |
| 3670 | |
| 3671 case 'C': | |
| 3672 if (fid != NULL) { | |
| 3673 jchar val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
| 3674 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
| 3675 o->char_field_put(field_offset, val); | |
| 3676 } | |
| 3677 off += 2; | |
| 3678 break; | |
| 3679 | |
| 3680 case 'S': | |
| 3681 if (fid != NULL) { | |
| 3682 jshort val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
| 3683 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
| 3684 o->short_field_put(field_offset, val); | |
| 3685 } | |
| 3686 off += 2; | |
| 3687 break; | |
| 3688 | |
| 3689 case 'I': | |
| 3690 if (fid != NULL) { | |
| 3691 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
| 3692 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
| 3693 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
| 3694 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
| 3695 o->int_field_put(field_offset, ival); | |
| 3696 } | |
| 3697 off += 4; | |
| 3698 break; | |
| 3699 | |
| 3700 case 'F': | |
| 3701 if (fid != NULL) { | |
| 3702 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
| 3703 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
| 3704 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
| 3705 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
| 3706 jfloat fval = (*int_bits_to_float_fn)(env, NULL, ival); | |
| 3707 o->float_field_put(field_offset, fval); | |
| 3708 } | |
| 3709 off += 4; | |
| 3710 break; | |
| 3711 | |
| 3712 case 'J': | |
| 3713 if (fid != NULL) { | |
| 3714 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
| 3715 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
| 3716 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
| 3717 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
| 3718 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
| 3719 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
| 3720 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
| 3721 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
| 3722 o->long_field_put(field_offset, lval); | |
| 3723 } | |
| 3724 off += 8; | |
| 3725 break; | |
| 3726 | |
| 3727 case 'D': | |
| 3728 if (fid != NULL) { | |
| 3729 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
| 3730 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
| 3731 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
| 3732 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
| 3733 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
| 3734 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
| 3735 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
| 3736 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
| 3737 jdouble dval = (*long_bits_to_double_fn)(env, NULL, lval); | |
| 3738 o->double_field_put(field_offset, dval); | |
| 3739 } | |
| 3740 off += 8; | |
| 3741 break; | |
| 3742 | |
| 3743 default: | |
| 3744 // Illegal typecode | |
| 3745 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
| 3746 } | |
| 3747 } | |
| 3748 JVM_END | |
| 3749 | |
| 3750 | |
| 3751 JVM_ENTRY(void, JVM_GetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
| 3752 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
| 3753 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
| 3754 | |
| 3755 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
| 3756 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
| 3757 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
| 3758 oop o = JNIHandles::resolve(obj); | |
| 3759 | |
| 3760 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
| 3761 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 3762 } | |
| 3763 | |
| 3764 jsize nfids = fids->length(); | |
| 3765 if (nfids == 0) return; | |
| 3766 | |
| 3767 if (tcodes->length() < nfids) { | |
| 3768 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
| 3769 } | |
| 3770 | |
| 3771 /* loop through fields, fetching values */ | |
| 3772 jsize off = 0; | |
| 3773 for (jsize i = 0; i < nfids; i++) { | |
| 3774 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
| 3775 if (fid == NULL) { | |
| 3776 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 3777 } | |
| 3778 int field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 3779 | |
| 3780 switch (tcodes->char_at(i)) { | |
| 3781 case 'Z': | |
| 3782 { | |
| 3783 jboolean val = o->bool_field(field_offset); | |
| 3784 dbuf->byte_at_put(off++, (val != 0) ? 1 : 0); | |
| 3785 } | |
| 3786 break; | |
| 3787 | |
| 3788 case 'B': | |
| 3789 dbuf->byte_at_put(off++, o->byte_field(field_offset)); | |
| 3790 break; | |
| 3791 | |
| 3792 case 'C': | |
| 3793 { | |
| 3794 jchar val = o->char_field(field_offset); | |
| 3795 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 3796 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 3797 } | |
| 3798 break; | |
| 3799 | |
| 3800 case 'S': | |
| 3801 { | |
| 3802 jshort val = o->short_field(field_offset); | |
| 3803 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 3804 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 3805 } | |
| 3806 break; | |
| 3807 | |
| 3808 case 'I': | |
| 3809 { | |
| 3810 jint val = o->int_field(field_offset); | |
| 3811 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
| 3812 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
| 3813 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 3814 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 3815 } | |
| 3816 break; | |
| 3817 | |
| 3818 case 'F': | |
| 3819 { | |
| 3820 jfloat fval = o->float_field(field_offset); | |
| 3821 jint ival = (*float_to_int_bits_fn)(env, NULL, fval); | |
| 3822 dbuf->byte_at_put(off++, (ival >> 24) & 0xFF); | |
| 3823 dbuf->byte_at_put(off++, (ival >> 16) & 0xFF); | |
| 3824 dbuf->byte_at_put(off++, (ival >> 8) & 0xFF); | |
| 3825 dbuf->byte_at_put(off++, (ival >> 0) & 0xFF); | |
| 3826 } | |
| 3827 break; | |
| 3828 | |
| 3829 case 'J': | |
| 3830 { | |
| 3831 jlong val = o->long_field(field_offset); | |
| 3832 dbuf->byte_at_put(off++, (val >> 56) & 0xFF); | |
| 3833 dbuf->byte_at_put(off++, (val >> 48) & 0xFF); | |
| 3834 dbuf->byte_at_put(off++, (val >> 40) & 0xFF); | |
| 3835 dbuf->byte_at_put(off++, (val >> 32) & 0xFF); | |
| 3836 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
| 3837 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
| 3838 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 3839 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 3840 } | |
| 3841 break; | |
| 3842 | |
| 3843 case 'D': | |
| 3844 { | |
| 3845 jdouble dval = o->double_field(field_offset); | |
| 3846 jlong lval = (*double_to_long_bits_fn)(env, NULL, dval); | |
| 3847 dbuf->byte_at_put(off++, (lval >> 56) & 0xFF); | |
| 3848 dbuf->byte_at_put(off++, (lval >> 48) & 0xFF); | |
| 3849 dbuf->byte_at_put(off++, (lval >> 40) & 0xFF); | |
| 3850 dbuf->byte_at_put(off++, (lval >> 32) & 0xFF); | |
| 3851 dbuf->byte_at_put(off++, (lval >> 24) & 0xFF); | |
| 3852 dbuf->byte_at_put(off++, (lval >> 16) & 0xFF); | |
| 3853 dbuf->byte_at_put(off++, (lval >> 8) & 0xFF); | |
| 3854 dbuf->byte_at_put(off++, (lval >> 0) & 0xFF); | |
| 3855 } | |
| 3856 break; | |
| 3857 | |
| 3858 default: | |
| 3859 // Illegal typecode | |
| 3860 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
| 3861 } | |
| 3862 } | |
| 3863 JVM_END | |
| 3864 | |
| 3865 | |
| 3866 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
| 3867 | |
| 3868 jclass find_class_from_class_loader(JNIEnv* env, symbolHandle name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS) { | |
| 3869 // Security Note: | |
| 3870 // The Java level wrapper will perform the necessary security check allowing | |
| 3871 // us to pass the NULL as the initiating class loader. | |
| 3872 klassOop klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); | |
| 3873 KlassHandle klass_handle(THREAD, klass); | |
| 3874 // Check if we should initialize the class | |
| 3875 if (init && klass_handle->oop_is_instance()) { | |
| 3876 klass_handle->initialize(CHECK_NULL); | |
| 3877 } | |
| 3878 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
| 3879 } | |
| 3880 | |
| 3881 | |
| 3882 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
| 3883 | |
| 3884 #ifndef PRODUCT | |
| 3885 | |
| 3886 extern "C" { | |
| 3887 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
| 3888 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
| 3889 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
| 3890 } | |
| 3891 | |
| 3892 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
| 3893 JVMWrapper("JVM_AccessBoolVMFlag"); | |
| 3894 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, INTERNAL); | |
| 3895 JVM_END | |
| 3896 | |
| 3897 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
| 3898 JVMWrapper("JVM_AccessVMIntFlag"); | |
| 3899 intx v; | |
| 3900 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, INTERNAL); | |
| 3901 *value = (jint)v; | |
| 3902 return result; | |
| 3903 JVM_END | |
| 3904 | |
| 3905 | |
| 3906 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
| 3907 JVMWrapper("JVM_VMBreakPoint"); | |
| 3908 oop the_obj = JNIHandles::resolve(obj); | |
| 3909 BREAKPOINT; | |
| 3910 JVM_END | |
| 3911 | |
| 3912 | |
| 3913 #endif | |
| 3914 | |
| 3915 | |
| 3916 //--------------------------------------------------------------------------- | |
| 3917 // | |
| 3918 // Support for old native code-based reflection (pre-JDK 1.4) | |
| 3919 // Disabled by default in the product build. | |
| 3920 // | |
| 3921 // See reflection.hpp for information on SUPPORT_OLD_REFLECTION | |
| 3922 // | |
| 3923 //--------------------------------------------------------------------------- | |
| 3924 | |
| 3925 #ifdef SUPPORT_OLD_REFLECTION | |
| 3926 | |
| 3927 JVM_ENTRY(jobjectArray, JVM_GetClassFields(JNIEnv *env, jclass cls, jint which)) | |
| 3928 JVMWrapper("JVM_GetClassFields"); | |
| 3929 JvmtiVMObjectAllocEventCollector oam; | |
| 3930 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 3931 objArrayOop result = Reflection::reflect_fields(mirror, which, CHECK_NULL); | |
| 3932 return (jobjectArray) JNIHandles::make_local(env, result); | |
| 3933 JVM_END | |
| 3934 | |
| 3935 | |
| 3936 JVM_ENTRY(jobjectArray, JVM_GetClassMethods(JNIEnv *env, jclass cls, jint which)) | |
| 3937 JVMWrapper("JVM_GetClassMethods"); | |
| 3938 JvmtiVMObjectAllocEventCollector oam; | |
| 3939 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 3940 objArrayOop result = Reflection::reflect_methods(mirror, which, CHECK_NULL); | |
| 3941 //%note jvm_r4 | |
| 3942 return (jobjectArray) JNIHandles::make_local(env, result); | |
| 3943 JVM_END | |
| 3944 | |
| 3945 | |
| 3946 JVM_ENTRY(jobjectArray, JVM_GetClassConstructors(JNIEnv *env, jclass cls, jint which)) | |
| 3947 JVMWrapper("JVM_GetClassConstructors"); | |
| 3948 JvmtiVMObjectAllocEventCollector oam; | |
| 3949 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 3950 objArrayOop result = Reflection::reflect_constructors(mirror, which, CHECK_NULL); | |
| 3951 //%note jvm_r4 | |
| 3952 return (jobjectArray) JNIHandles::make_local(env, result); | |
| 3953 JVM_END | |
| 3954 | |
| 3955 | |
| 3956 JVM_ENTRY(jobject, JVM_GetClassField(JNIEnv *env, jclass cls, jstring name, jint which)) | |
| 3957 JVMWrapper("JVM_GetClassField"); | |
| 3958 JvmtiVMObjectAllocEventCollector oam; | |
| 3959 if (name == NULL) return NULL; | |
| 3960 Handle str (THREAD, JNIHandles::resolve_non_null(name)); | |
| 3961 | |
| 3962 const char* cstr = java_lang_String::as_utf8_string(str()); | |
| 3963 symbolHandle field_name = | |
| 3964 symbolHandle(THREAD, SymbolTable::probe(cstr, (int)strlen(cstr))); | |
| 3965 if (field_name.is_null()) { | |
| 3966 THROW_0(vmSymbols::java_lang_NoSuchFieldException()); | |
| 3967 } | |
| 3968 | |
| 3969 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 3970 oop result = Reflection::reflect_field(mirror, field_name(), which, CHECK_NULL); | |
| 3971 if (result == NULL) { | |
| 3972 THROW_0(vmSymbols::java_lang_NoSuchFieldException()); | |
| 3973 } | |
| 3974 return JNIHandles::make_local(env, result); | |
| 3975 JVM_END | |
| 3976 | |
| 3977 | |
| 3978 JVM_ENTRY(jobject, JVM_GetClassMethod(JNIEnv *env, jclass cls, jstring name, jobjectArray types, jint which)) | |
| 3979 JVMWrapper("JVM_GetClassMethod"); | |
| 3980 JvmtiVMObjectAllocEventCollector oam; | |
| 3981 if (name == NULL) { | |
| 3982 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 3983 } | |
| 3984 Handle str (THREAD, JNIHandles::resolve_non_null(name)); | |
| 3985 | |
| 3986 const char* cstr = java_lang_String::as_utf8_string(str()); | |
| 3987 symbolHandle method_name = | |
| 3988 symbolHandle(THREAD, SymbolTable::probe(cstr, (int)strlen(cstr))); | |
| 3989 if (method_name.is_null()) { | |
| 3990 THROW_0(vmSymbols::java_lang_NoSuchMethodException()); | |
| 3991 } | |
| 3992 | |
| 3993 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 3994 objArrayHandle tarray (THREAD, objArrayOop(JNIHandles::resolve(types))); | |
| 3995 oop result = Reflection::reflect_method(mirror, method_name, tarray, | |
| 3996 which, CHECK_NULL); | |
| 3997 if (result == NULL) { | |
| 3998 THROW_0(vmSymbols::java_lang_NoSuchMethodException()); | |
| 3999 } | |
| 4000 return JNIHandles::make_local(env, result); | |
| 4001 JVM_END | |
| 4002 | |
| 4003 | |
| 4004 JVM_ENTRY(jobject, JVM_GetClassConstructor(JNIEnv *env, jclass cls, jobjectArray types, jint which)) | |
| 4005 JVMWrapper("JVM_GetClassConstructor"); | |
| 4006 JvmtiVMObjectAllocEventCollector oam; | |
| 4007 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 4008 objArrayHandle tarray (THREAD, objArrayOop(JNIHandles::resolve(types))); | |
| 4009 oop result = Reflection::reflect_constructor(mirror, tarray, which, CHECK_NULL); | |
| 4010 if (result == NULL) { | |
| 4011 THROW_0(vmSymbols::java_lang_NoSuchMethodException()); | |
| 4012 } | |
| 4013 return (jobject) JNIHandles::make_local(env, result); | |
| 4014 JVM_END | |
| 4015 | |
| 4016 | |
| 4017 // Instantiation /////////////////////////////////////////////////////////////////////////////// | |
| 4018 | |
| 4019 JVM_ENTRY(jobject, JVM_NewInstance(JNIEnv *env, jclass cls)) | |
| 4020 JVMWrapper("JVM_NewInstance"); | |
| 4021 Handle mirror(THREAD, JNIHandles::resolve_non_null(cls)); | |
| 4022 | |
| 4023 methodOop resolved_constructor = java_lang_Class::resolved_constructor(mirror()); | |
| 4024 if (resolved_constructor == NULL) { | |
| 4025 klassOop k = java_lang_Class::as_klassOop(mirror()); | |
| 4026 // The java.lang.Class object caches a resolved constructor if all the checks | |
| 4027 // below were done successfully and a constructor was found. | |
| 4028 | |
| 4029 // Do class based checks | |
| 4030 if (java_lang_Class::is_primitive(mirror())) { | |
| 4031 const char* msg = ""; | |
| 4032 if (mirror == Universe::bool_mirror()) msg = "java/lang/Boolean"; | |
| 4033 else if (mirror == Universe::char_mirror()) msg = "java/lang/Character"; | |
| 4034 else if (mirror == Universe::float_mirror()) msg = "java/lang/Float"; | |
| 4035 else if (mirror == Universe::double_mirror()) msg = "java/lang/Double"; | |
| 4036 else if (mirror == Universe::byte_mirror()) msg = "java/lang/Byte"; | |
| 4037 else if (mirror == Universe::short_mirror()) msg = "java/lang/Short"; | |
| 4038 else if (mirror == Universe::int_mirror()) msg = "java/lang/Integer"; | |
| 4039 else if (mirror == Universe::long_mirror()) msg = "java/lang/Long"; | |
| 4040 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), msg); | |
| 4041 } | |
| 4042 | |
| 4043 // Check whether we are allowed to instantiate this class | |
| 4044 Klass::cast(k)->check_valid_for_instantiation(false, CHECK_NULL); // Array classes get caught here | |
| 4045 instanceKlassHandle klass(THREAD, k); | |
| 4046 // Make sure class is initialized (also so all methods are rewritten) | |
| 4047 klass->initialize(CHECK_NULL); | |
| 4048 | |
| 4049 // Lookup default constructor | |
| 4050 resolved_constructor = klass->find_method(vmSymbols::object_initializer_name(), vmSymbols::void_method_signature()); | |
| 4051 if (resolved_constructor == NULL) { | |
| 4052 ResourceMark rm(THREAD); | |
| 4053 THROW_MSG_0(vmSymbols::java_lang_InstantiationException(), klass->external_name()); | |
| 4054 } | |
| 4055 | |
| 4056 // Cache result in java.lang.Class object. Does not have to be MT safe. | |
| 4057 java_lang_Class::set_resolved_constructor(mirror(), resolved_constructor); | |
| 4058 } | |
| 4059 | |
| 4060 assert(resolved_constructor != NULL, "sanity check"); | |
| 4061 methodHandle constructor = methodHandle(THREAD, resolved_constructor); | |
| 4062 | |
| 4063 // We have an initialized instanceKlass with a default constructor | |
| 4064 instanceKlassHandle klass(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls))); | |
| 4065 assert(klass->is_initialized() || klass->is_being_initialized(), "sanity check"); | |
| 4066 | |
| 4067 // Do security check | |
| 4068 klassOop caller_klass = NULL; | |
| 4069 if (UsePrivilegedStack) { | |
| 4070 caller_klass = thread->security_get_caller_class(2); | |
| 4071 | |
| 4072 if (!Reflection::verify_class_access(caller_klass, klass(), false) || | |
| 4073 !Reflection::verify_field_access(caller_klass, | |
| 4074 klass(), | |
| 4075 klass(), | |
| 4076 constructor->access_flags(), | |
| 4077 false, | |
| 4078 true)) { | |
| 4079 ResourceMark rm(THREAD); | |
| 4080 THROW_MSG_0(vmSymbols::java_lang_IllegalAccessException(), klass->external_name()); | |
| 4081 } | |
| 4082 } | |
| 4083 | |
| 4084 // Allocate object and call constructor | |
| 4085 Handle receiver = klass->allocate_instance_handle(CHECK_NULL); | |
| 4086 JavaCalls::call_default_constructor(thread, constructor, receiver, CHECK_NULL); | |
| 4087 | |
| 4088 jobject res = JNIHandles::make_local(env, receiver()); | |
| 4089 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4090 JvmtiExport::post_vm_object_alloc(JavaThread::current(), receiver()); | |
| 4091 } | |
| 4092 return res; | |
| 4093 JVM_END | |
| 4094 | |
| 4095 | |
| 4096 // Field //////////////////////////////////////////////////////////////////////////////////////////// | |
| 4097 | |
| 4098 JVM_ENTRY(jobject, JVM_GetField(JNIEnv *env, jobject field, jobject obj)) | |
| 4099 JVMWrapper("JVM_GetField"); | |
| 4100 JvmtiVMObjectAllocEventCollector oam; | |
| 4101 Handle field_mirror(thread, JNIHandles::resolve(field)); | |
| 4102 Handle receiver (thread, JNIHandles::resolve(obj)); | |
| 4103 fieldDescriptor fd; | |
| 4104 Reflection::resolve_field(field_mirror, receiver, &fd, false, CHECK_NULL); | |
| 4105 jvalue value; | |
| 4106 BasicType type = Reflection::field_get(&value, &fd, receiver); | |
| 4107 oop box = Reflection::box(&value, type, CHECK_NULL); | |
| 4108 return JNIHandles::make_local(env, box); | |
| 4109 JVM_END | |
| 4110 | |
| 4111 | |
| 4112 JVM_ENTRY(jvalue, JVM_GetPrimitiveField(JNIEnv *env, jobject field, jobject obj, unsigned char wCode)) | |
| 4113 JVMWrapper("JVM_GetPrimitiveField"); | |
| 4114 Handle field_mirror(thread, JNIHandles::resolve(field)); | |
| 4115 Handle receiver (thread, JNIHandles::resolve(obj)); | |
| 4116 fieldDescriptor fd; | |
| 4117 jvalue value; | |
| 4118 value.j = 0; | |
| 4119 Reflection::resolve_field(field_mirror, receiver, &fd, false, CHECK_(value)); | |
| 4120 BasicType type = Reflection::field_get(&value, &fd, receiver); | |
| 4121 BasicType wide_type = (BasicType) wCode; | |
| 4122 if (type != wide_type) { | |
| 4123 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
| 4124 } | |
| 4125 return value; | |
| 4126 JVM_END // should really be JVM_END, but that doesn't work for union types! | |
| 4127 | |
| 4128 | |
| 4129 JVM_ENTRY(void, JVM_SetField(JNIEnv *env, jobject field, jobject obj, jobject val)) | |
| 4130 JVMWrapper("JVM_SetField"); | |
| 4131 Handle field_mirror(thread, JNIHandles::resolve(field)); | |
| 4132 Handle receiver (thread, JNIHandles::resolve(obj)); | |
| 4133 oop box = JNIHandles::resolve(val); | |
| 4134 fieldDescriptor fd; | |
| 4135 Reflection::resolve_field(field_mirror, receiver, &fd, true, CHECK); | |
| 4136 BasicType field_type = fd.field_type(); | |
| 4137 jvalue value; | |
| 4138 BasicType value_type; | |
| 4139 if (field_type == T_OBJECT || field_type == T_ARRAY) { | |
| 4140 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
| 4141 value_type = Reflection::unbox_for_regular_object(box, &value); | |
| 4142 Reflection::field_set(&value, &fd, receiver, field_type, CHECK); | |
| 4143 } else { | |
| 4144 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
| 4145 Reflection::field_set(&value, &fd, receiver, value_type, CHECK); | |
| 4146 } | |
| 4147 JVM_END | |
| 4148 | |
| 4149 | |
| 4150 JVM_ENTRY(void, JVM_SetPrimitiveField(JNIEnv *env, jobject field, jobject obj, jvalue v, unsigned char vCode)) | |
| 4151 JVMWrapper("JVM_SetPrimitiveField"); | |
| 4152 Handle field_mirror(thread, JNIHandles::resolve(field)); | |
| 4153 Handle receiver (thread, JNIHandles::resolve(obj)); | |
| 4154 fieldDescriptor fd; | |
| 4155 Reflection::resolve_field(field_mirror, receiver, &fd, true, CHECK); | |
| 4156 BasicType value_type = (BasicType) vCode; | |
| 4157 Reflection::field_set(&v, &fd, receiver, value_type, CHECK); | |
| 4158 JVM_END | |
| 4159 | |
| 4160 | |
| 4161 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4162 | |
| 4163 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
| 4164 JVMWrapper("JVM_InvokeMethod"); | |
| 4165 Handle method_handle; | |
| 4166 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
| 4167 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
| 4168 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
| 4169 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4170 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
| 4171 jobject res = JNIHandles::make_local(env, result); | |
| 4172 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4173 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
| 4174 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
| 4175 if (java_lang_Class::is_primitive(ret_type)) { | |
| 4176 // Only for primitive type vm allocates memory for java object. | |
| 4177 // See box() method. | |
| 4178 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4179 } | |
| 4180 } | |
| 4181 return res; | |
| 4182 } else { | |
| 4183 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
| 4184 } | |
| 4185 JVM_END | |
| 4186 | |
| 4187 | |
| 4188 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
| 4189 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
| 4190 oop constructor_mirror = JNIHandles::resolve(c); | |
| 4191 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4192 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
| 4193 jobject res = JNIHandles::make_local(env, result); | |
| 4194 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4195 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4196 } | |
| 4197 return res; | |
| 4198 JVM_END | |
| 4199 | |
| 4200 #endif /* SUPPORT_OLD_REFLECTION */ | |
| 4201 | |
| 4202 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4203 | |
| 4204 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
| 4205 JVMWrapper("JVM_SupportsCX8"); | |
| 4206 return VM_Version::supports_cx8(); | |
| 4207 JVM_END | |
| 4208 | |
| 4209 | |
| 4210 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
| 4211 JVMWrapper("JVM_CX8Field"); | |
| 4212 jlong res; | |
| 4213 oop o = JNIHandles::resolve(obj); | |
| 4214 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 4215 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
| 4216 | |
| 4217 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
| 4218 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
| 4219 | |
| 4220 return res == oldVal; | |
| 4221 JVM_END | |
| 4222 | |
|
116
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4223 // DTrace /////////////////////////////////////////////////////////////////// |
|
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4224 |
|
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|
4225 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
|
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4226 JVMWrapper("JVM_DTraceGetVersion"); |
|
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4227 return (jint)JVM_TRACING_DTRACE_VERSION; |
|
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|
4228 JVM_END |
|
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|
4229 |
|
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|
4230 JVM_ENTRY(jlong,JVM_DTraceActivate( |
|
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4231 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
|
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|
4232 JVM_DTraceProvider* providers)) |
|
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|
4233 JVMWrapper("JVM_DTraceActivate"); |
|
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|
4234 return DTraceJSDT::activate( |
|
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|
4235 version, module_name, providers_count, providers, CHECK_0); |
|
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4236 JVM_END |
|
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|
4237 |
|
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|
4238 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
|
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|
4239 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
|
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|
4240 return DTraceJSDT::is_probe_enabled(method); |
|
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4241 JVM_END |
|
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|
4242 |
|
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|
4243 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
|
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|
4244 JVMWrapper("JVM_DTraceDispose"); |
|
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|
4245 DTraceJSDT::dispose(handle); |
|
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4246 JVM_END |
|
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|
4247 |
|
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4248 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
|
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4249 JVMWrapper("JVM_DTraceIsSupported"); |
|
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4250 return DTraceJSDT::is_supported(); |
|
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4251 JVM_END |
|
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|
4252 |
| 0 | 4253 // Returns an array of all live Thread objects (VM internal JavaThreads, |
| 4254 // jvmti agent threads, and JNI attaching threads are skipped) | |
| 4255 // See CR 6404306 regarding JNI attaching threads | |
| 4256 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
| 4257 ResourceMark rm(THREAD); | |
| 4258 ThreadsListEnumerator tle(THREAD, false, false); | |
| 4259 JvmtiVMObjectAllocEventCollector oam; | |
| 4260 | |
| 4261 int num_threads = tle.num_threads(); | |
| 4262 objArrayOop r = oopFactory::new_objArray(SystemDictionary::thread_klass(), num_threads, CHECK_NULL); | |
| 4263 objArrayHandle threads_ah(THREAD, r); | |
| 4264 | |
| 4265 for (int i = 0; i < num_threads; i++) { | |
| 4266 Handle h = tle.get_threadObj(i); | |
| 4267 threads_ah->obj_at_put(i, h()); | |
| 4268 } | |
| 4269 | |
| 4270 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
| 4271 JVM_END | |
| 4272 | |
| 4273 | |
| 4274 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
| 4275 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
| 4276 // the corresponding entry in the given threads array | |
| 4277 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
| 4278 JVMWrapper("JVM_DumpThreads"); | |
| 4279 JvmtiVMObjectAllocEventCollector oam; | |
| 4280 | |
| 4281 // Check if threads is null | |
| 4282 if (threads == NULL) { | |
| 4283 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4284 } | |
| 4285 | |
| 4286 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
| 4287 objArrayHandle ah(THREAD, a); | |
| 4288 int num_threads = ah->length(); | |
| 4289 // check if threads is non-empty array | |
| 4290 if (num_threads == 0) { | |
| 4291 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
| 4292 } | |
| 4293 | |
| 4294 // check if threads is not an array of objects of Thread class | |
| 4295 klassOop k = objArrayKlass::cast(ah->klass())->element_klass(); | |
| 4296 if (k != SystemDictionary::thread_klass()) { | |
| 4297 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
| 4298 } | |
| 4299 | |
| 4300 ResourceMark rm(THREAD); | |
| 4301 | |
| 4302 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
| 4303 for (int i = 0; i < num_threads; i++) { | |
| 4304 oop thread_obj = ah->obj_at(i); | |
| 4305 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
| 4306 thread_handle_array->append(h); | |
| 4307 } | |
| 4308 | |
| 4309 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
| 4310 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
| 4311 | |
| 4312 JVM_END | |
| 4313 | |
| 4314 // JVM monitoring and management support | |
| 4315 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
| 4316 return Management::get_jmm_interface(version); | |
| 4317 JVM_END | |
| 4318 | |
| 4319 // com.sun.tools.attach.VirtualMachine agent properties support | |
| 4320 // | |
| 4321 // Initialize the agent properties with the properties maintained in the VM | |
| 4322 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
| 4323 JVMWrapper("JVM_InitAgentProperties"); | |
| 4324 ResourceMark rm; | |
| 4325 | |
| 4326 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
| 4327 | |
| 4328 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
| 4329 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
| 4330 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
| 4331 return properties; | |
| 4332 JVM_END | |
| 4333 | |
| 4334 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
| 4335 { | |
| 4336 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
| 4337 JvmtiVMObjectAllocEventCollector oam; | |
| 4338 | |
| 4339 if (ofClass == NULL) { | |
| 4340 return NULL; | |
| 4341 } | |
| 4342 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
| 4343 // Special handling for primitive objects | |
| 4344 if (java_lang_Class::is_primitive(mirror())) { | |
| 4345 return NULL; | |
| 4346 } | |
| 4347 klassOop k = java_lang_Class::as_klassOop(mirror()); | |
| 4348 if (!Klass::cast(k)->oop_is_instance()) { | |
| 4349 return NULL; | |
| 4350 } | |
| 4351 instanceKlassHandle ik_h(THREAD, k); | |
| 4352 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
| 4353 if (encl_method_class_idx == 0) { | |
| 4354 return NULL; | |
| 4355 } | |
| 4356 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::object_klass(), 3, CHECK_NULL); | |
| 4357 objArrayHandle dest(THREAD, dest_o); | |
| 4358 klassOop enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); | |
| 4359 dest->obj_at_put(0, Klass::cast(enc_k)->java_mirror()); | |
| 4360 int encl_method_method_idx = ik_h->enclosing_method_method_index(); | |
| 4361 if (encl_method_method_idx != 0) { | |
| 4362 symbolOop sym_o = ik_h->constants()->symbol_at( | |
| 4363 extract_low_short_from_int( | |
| 4364 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4365 symbolHandle sym(THREAD, sym_o); | |
| 4366 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4367 dest->obj_at_put(1, str()); | |
| 4368 sym_o = ik_h->constants()->symbol_at( | |
| 4369 extract_high_short_from_int( | |
| 4370 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4371 sym = symbolHandle(THREAD, sym_o); | |
| 4372 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4373 dest->obj_at_put(2, str()); | |
| 4374 } | |
| 4375 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 4376 } | |
| 4377 JVM_END | |
| 4378 | |
| 4379 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
| 4380 jint javaThreadState)) | |
| 4381 { | |
| 4382 // If new thread states are added in future JDK and VM versions, | |
| 4383 // this should check if the JDK version is compatible with thread | |
| 4384 // states supported by the VM. Return NULL if not compatible. | |
| 4385 // | |
| 4386 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4387 // to the Java thread state that the JDK supports. | |
| 4388 // | |
| 4389 | |
| 4390 typeArrayHandle values_h; | |
| 4391 switch (javaThreadState) { | |
| 4392 case JAVA_THREAD_STATE_NEW : { | |
| 4393 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4394 values_h = typeArrayHandle(THREAD, r); | |
| 4395 values_h->int_at_put(0, java_lang_Thread::NEW); | |
| 4396 break; | |
| 4397 } | |
| 4398 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4399 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4400 values_h = typeArrayHandle(THREAD, r); | |
| 4401 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
| 4402 break; | |
| 4403 } | |
| 4404 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4405 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4406 values_h = typeArrayHandle(THREAD, r); | |
| 4407 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
| 4408 break; | |
| 4409 } | |
| 4410 case JAVA_THREAD_STATE_WAITING : { | |
| 4411 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
| 4412 values_h = typeArrayHandle(THREAD, r); | |
| 4413 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
| 4414 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
| 4415 break; | |
| 4416 } | |
| 4417 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4418 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
| 4419 values_h = typeArrayHandle(THREAD, r); | |
| 4420 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
| 4421 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
| 4422 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
| 4423 break; | |
| 4424 } | |
| 4425 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4426 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4427 values_h = typeArrayHandle(THREAD, r); | |
| 4428 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
| 4429 break; | |
| 4430 } | |
| 4431 default: | |
| 4432 // Unknown state - probably incompatible JDK version | |
| 4433 return NULL; | |
| 4434 } | |
| 4435 | |
| 4436 return (jintArray) JNIHandles::make_local(env, values_h()); | |
| 4437 } | |
| 4438 JVM_END | |
| 4439 | |
| 4440 | |
| 4441 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
| 4442 jint javaThreadState, | |
| 4443 jintArray values)) | |
| 4444 { | |
| 4445 // If new thread states are added in future JDK and VM versions, | |
| 4446 // this should check if the JDK version is compatible with thread | |
| 4447 // states supported by the VM. Return NULL if not compatible. | |
| 4448 // | |
| 4449 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4450 // to the Java thread state that the JDK supports. | |
| 4451 // | |
| 4452 | |
| 4453 ResourceMark rm; | |
| 4454 | |
| 4455 // Check if threads is null | |
| 4456 if (values == NULL) { | |
| 4457 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4458 } | |
| 4459 | |
| 4460 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
| 4461 typeArrayHandle values_h(THREAD, v); | |
| 4462 | |
| 4463 objArrayHandle names_h; | |
| 4464 switch (javaThreadState) { | |
| 4465 case JAVA_THREAD_STATE_NEW : { | |
| 4466 assert(values_h->length() == 1 && | |
| 4467 values_h->int_at(0) == java_lang_Thread::NEW, | |
| 4468 "Invalid threadStatus value"); | |
| 4469 | |
| 4470 objArrayOop r = oopFactory::new_objArray(SystemDictionary::string_klass(), | |
| 4471 1, /* only 1 substate */ | |
| 4472 CHECK_NULL); | |
| 4473 names_h = objArrayHandle(THREAD, r); | |
| 4474 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
| 4475 names_h->obj_at_put(0, name()); | |
| 4476 break; | |
| 4477 } | |
| 4478 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4479 assert(values_h->length() == 1 && | |
| 4480 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
| 4481 "Invalid threadStatus value"); | |
| 4482 | |
| 4483 objArrayOop r = oopFactory::new_objArray(SystemDictionary::string_klass(), | |
| 4484 1, /* only 1 substate */ | |
| 4485 CHECK_NULL); | |
| 4486 names_h = objArrayHandle(THREAD, r); | |
| 4487 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
| 4488 names_h->obj_at_put(0, name()); | |
| 4489 break; | |
| 4490 } | |
| 4491 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4492 assert(values_h->length() == 1 && | |
| 4493 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
| 4494 "Invalid threadStatus value"); | |
| 4495 | |
| 4496 objArrayOop r = oopFactory::new_objArray(SystemDictionary::string_klass(), | |
| 4497 1, /* only 1 substate */ | |
| 4498 CHECK_NULL); | |
| 4499 names_h = objArrayHandle(THREAD, r); | |
| 4500 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
| 4501 names_h->obj_at_put(0, name()); | |
| 4502 break; | |
| 4503 } | |
| 4504 case JAVA_THREAD_STATE_WAITING : { | |
| 4505 assert(values_h->length() == 2 && | |
| 4506 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
| 4507 values_h->int_at(1) == java_lang_Thread::PARKED, | |
| 4508 "Invalid threadStatus value"); | |
| 4509 objArrayOop r = oopFactory::new_objArray(SystemDictionary::string_klass(), | |
| 4510 2, /* number of substates */ | |
| 4511 CHECK_NULL); | |
| 4512 names_h = objArrayHandle(THREAD, r); | |
| 4513 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
| 4514 CHECK_NULL); | |
| 4515 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
| 4516 CHECK_NULL); | |
| 4517 names_h->obj_at_put(0, name0()); | |
| 4518 names_h->obj_at_put(1, name1()); | |
| 4519 break; | |
| 4520 } | |
| 4521 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4522 assert(values_h->length() == 3 && | |
| 4523 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
| 4524 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
| 4525 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
| 4526 "Invalid threadStatus value"); | |
| 4527 objArrayOop r = oopFactory::new_objArray(SystemDictionary::string_klass(), | |
| 4528 3, /* number of substates */ | |
| 4529 CHECK_NULL); | |
| 4530 names_h = objArrayHandle(THREAD, r); | |
| 4531 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
| 4532 CHECK_NULL); | |
| 4533 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
| 4534 CHECK_NULL); | |
| 4535 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
| 4536 CHECK_NULL); | |
| 4537 names_h->obj_at_put(0, name0()); | |
| 4538 names_h->obj_at_put(1, name1()); | |
| 4539 names_h->obj_at_put(2, name2()); | |
| 4540 break; | |
| 4541 } | |
| 4542 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4543 assert(values_h->length() == 1 && | |
| 4544 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
| 4545 "Invalid threadStatus value"); | |
| 4546 objArrayOop r = oopFactory::new_objArray(SystemDictionary::string_klass(), | |
| 4547 1, /* only 1 substate */ | |
| 4548 CHECK_NULL); | |
| 4549 names_h = objArrayHandle(THREAD, r); | |
| 4550 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
| 4551 names_h->obj_at_put(0, name()); | |
| 4552 break; | |
| 4553 } | |
| 4554 default: | |
| 4555 // Unknown state - probably incompatible JDK version | |
| 4556 return NULL; | |
| 4557 } | |
| 4558 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
| 4559 } | |
| 4560 JVM_END | |
| 4561 | |
| 4562 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
| 4563 { | |
| 4564 memset(info, 0, sizeof(info_size)); | |
| 4565 | |
| 4566 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
| 4567 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4568 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4569 | |
| 4570 // when we add a new capability in the jvm_version_info struct, we should also | |
| 4571 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
| 4572 // counter defined in runtimeService.cpp. | |
| 4573 info->is_attachable = AttachListener::is_attach_supported(); | |
| 4574 #ifdef KERNEL | |
| 4575 info->is_kernel_jvm = 1; // true; | |
| 4576 #else // KERNEL | |
| 4577 info->is_kernel_jvm = 0; // false; | |
| 4578 #endif // KERNEL | |
| 4579 } | |
| 4580 JVM_END | |
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018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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