Mercurial > hg > truffle
annotate src/share/vm/prims/jvm.cpp @ 2177:3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
Summary: move symbols from permgen into C heap and reference count them
Reviewed-by: never, acorn, jmasa, stefank
| author | coleenp |
|---|---|
| date | Thu, 27 Jan 2011 16:11:27 -0800 |
| parents | ccfcb502af3f |
| children | d70fe6ab4436 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "classfile/classLoader.hpp" | |
| 27 #include "classfile/javaAssertions.hpp" | |
| 28 #include "classfile/javaClasses.hpp" | |
| 29 #include "classfile/symbolTable.hpp" | |
| 30 #include "classfile/systemDictionary.hpp" | |
| 31 #include "classfile/vmSymbols.hpp" | |
| 32 #include "gc_interface/collectedHeap.inline.hpp" | |
| 33 #include "memory/oopFactory.hpp" | |
| 34 #include "memory/universe.inline.hpp" | |
| 35 #include "oops/instanceKlass.hpp" | |
| 36 #include "oops/objArrayKlass.hpp" | |
| 37 #include "prims/jvm.h" | |
| 38 #include "prims/jvm_misc.hpp" | |
| 39 #include "prims/jvmtiExport.hpp" | |
| 40 #include "prims/jvmtiThreadState.hpp" | |
| 41 #include "prims/nativeLookup.hpp" | |
| 42 #include "prims/privilegedStack.hpp" | |
| 43 #include "runtime/arguments.hpp" | |
| 44 #include "runtime/dtraceJSDT.hpp" | |
| 45 #include "runtime/handles.inline.hpp" | |
| 46 #include "runtime/init.hpp" | |
| 47 #include "runtime/interfaceSupport.hpp" | |
| 48 #include "runtime/java.hpp" | |
| 49 #include "runtime/javaCalls.hpp" | |
| 50 #include "runtime/jfieldIDWorkaround.hpp" | |
| 51 #include "runtime/os.hpp" | |
| 52 #include "runtime/perfData.hpp" | |
| 53 #include "runtime/reflection.hpp" | |
| 54 #include "runtime/vframe.hpp" | |
| 55 #include "runtime/vm_operations.hpp" | |
| 56 #include "services/attachListener.hpp" | |
| 57 #include "services/management.hpp" | |
| 58 #include "services/threadService.hpp" | |
| 59 #include "utilities/copy.hpp" | |
| 60 #include "utilities/defaultStream.hpp" | |
| 61 #include "utilities/dtrace.hpp" | |
| 62 #include "utilities/events.hpp" | |
| 63 #include "utilities/histogram.hpp" | |
| 64 #include "utilities/top.hpp" | |
| 65 #include "utilities/utf8.hpp" | |
| 66 #ifdef TARGET_OS_FAMILY_linux | |
| 67 # include "jvm_linux.h" | |
| 68 #endif | |
| 69 #ifdef TARGET_OS_FAMILY_solaris | |
| 70 # include "jvm_solaris.h" | |
| 71 #endif | |
| 72 #ifdef TARGET_OS_FAMILY_windows | |
| 73 # include "jvm_windows.h" | |
| 74 #endif | |
| 75 | |
| 0 | 76 #include <errno.h> |
| 77 | |
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78 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__begin, long long); |
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79 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__end, int); |
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80 HS_DTRACE_PROBE_DECL0(hotspot, thread__yield); |
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81 |
| 0 | 82 /* |
| 83 NOTE about use of any ctor or function call that can trigger a safepoint/GC: | |
| 84 such ctors and calls MUST NOT come between an oop declaration/init and its | |
| 85 usage because if objects are move this may cause various memory stomps, bus | |
| 86 errors and segfaults. Here is a cookbook for causing so called "naked oop | |
| 87 failures": | |
| 88 | |
| 89 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> { | |
| 90 JVMWrapper("JVM_GetClassDeclaredFields"); | |
| 91 | |
| 92 // Object address to be held directly in mirror & not visible to GC | |
| 93 oop mirror = JNIHandles::resolve_non_null(ofClass); | |
| 94 | |
| 95 // If this ctor can hit a safepoint, moving objects around, then | |
| 96 ComplexConstructor foo; | |
| 97 | |
| 98 // Boom! mirror may point to JUNK instead of the intended object | |
| 99 (some dereference of mirror) | |
| 100 | |
| 101 // Here's another call that may block for GC, making mirror stale | |
| 102 MutexLocker ml(some_lock); | |
| 103 | |
| 104 // And here's an initializer that can result in a stale oop | |
| 105 // all in one step. | |
| 106 oop o = call_that_can_throw_exception(TRAPS); | |
| 107 | |
| 108 | |
| 109 The solution is to keep the oop declaration BELOW the ctor or function | |
| 110 call that might cause a GC, do another resolve to reassign the oop, or | |
| 111 consider use of a Handle instead of an oop so there is immunity from object | |
| 112 motion. But note that the "QUICK" entries below do not have a handlemark | |
| 113 and thus can only support use of handles passed in. | |
| 114 */ | |
| 115 | |
| 116 static void trace_class_resolution_impl(klassOop to_class, TRAPS) { | |
| 117 ResourceMark rm; | |
| 118 int line_number = -1; | |
| 119 const char * source_file = NULL; | |
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120 const char * trace = "explicit"; |
| 0 | 121 klassOop caller = NULL; |
| 122 JavaThread* jthread = JavaThread::current(); | |
| 123 if (jthread->has_last_Java_frame()) { | |
| 124 vframeStream vfst(jthread); | |
| 125 | |
| 126 // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames | |
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127 TempNewSymbol access_controller = SymbolTable::new_symbol("java/security/AccessController", CHECK); |
| 0 | 128 klassOop access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); |
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129 TempNewSymbol privileged_action = SymbolTable::new_symbol("java/security/PrivilegedAction", CHECK); |
| 0 | 130 klassOop privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); |
| 131 | |
| 132 methodOop last_caller = NULL; | |
| 133 | |
| 134 while (!vfst.at_end()) { | |
| 135 methodOop m = vfst.method(); | |
| 1142 | 136 if (!vfst.method()->method_holder()->klass_part()->is_subclass_of(SystemDictionary::ClassLoader_klass())&& |
| 0 | 137 !vfst.method()->method_holder()->klass_part()->is_subclass_of(access_controller_klass) && |
| 138 !vfst.method()->method_holder()->klass_part()->is_subclass_of(privileged_action_klass)) { | |
| 139 break; | |
| 140 } | |
| 141 last_caller = m; | |
| 142 vfst.next(); | |
| 143 } | |
| 144 // if this is called from Class.forName0 and that is called from Class.forName, | |
| 145 // then print the caller of Class.forName. If this is Class.loadClass, then print | |
| 146 // that caller, otherwise keep quiet since this should be picked up elsewhere. | |
| 147 bool found_it = false; | |
| 148 if (!vfst.at_end() && | |
| 149 instanceKlass::cast(vfst.method()->method_holder())->name() == vmSymbols::java_lang_Class() && | |
| 150 vfst.method()->name() == vmSymbols::forName0_name()) { | |
| 151 vfst.next(); | |
| 152 if (!vfst.at_end() && | |
| 153 instanceKlass::cast(vfst.method()->method_holder())->name() == vmSymbols::java_lang_Class() && | |
| 154 vfst.method()->name() == vmSymbols::forName_name()) { | |
| 155 vfst.next(); | |
| 156 found_it = true; | |
| 157 } | |
| 158 } else if (last_caller != NULL && | |
| 159 instanceKlass::cast(last_caller->method_holder())->name() == | |
| 160 vmSymbols::java_lang_ClassLoader() && | |
| 161 (last_caller->name() == vmSymbols::loadClassInternal_name() || | |
| 162 last_caller->name() == vmSymbols::loadClass_name())) { | |
| 163 found_it = true; | |
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164 } else if (!vfst.at_end()) { |
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165 if (vfst.method()->is_native()) { |
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166 // JNI call |
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167 found_it = true; |
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168 } |
| 0 | 169 } |
| 170 if (found_it && !vfst.at_end()) { | |
| 171 // found the caller | |
| 172 caller = vfst.method()->method_holder(); | |
| 173 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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174 if (line_number == -1) { |
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175 // show method name if it's a native method |
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176 trace = vfst.method()->name_and_sig_as_C_string(); |
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177 } |
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178 Symbol* s = instanceKlass::cast(caller)->source_file_name(); |
| 0 | 179 if (s != NULL) { |
| 180 source_file = s->as_C_string(); | |
| 181 } | |
| 182 } | |
| 183 } | |
| 184 if (caller != NULL) { | |
| 185 if (to_class != caller) { | |
| 186 const char * from = Klass::cast(caller)->external_name(); | |
| 187 const char * to = Klass::cast(to_class)->external_name(); | |
| 188 // print in a single call to reduce interleaving between threads | |
| 189 if (source_file != NULL) { | |
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190 tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace); |
| 0 | 191 } else { |
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192 tty->print("RESOLVE %s %s (%s)\n", from, to, trace); |
| 0 | 193 } |
| 194 } | |
| 195 } | |
| 196 } | |
| 197 | |
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198 void trace_class_resolution(klassOop to_class) { |
| 0 | 199 EXCEPTION_MARK; |
| 200 trace_class_resolution_impl(to_class, THREAD); | |
| 201 if (HAS_PENDING_EXCEPTION) { | |
| 202 CLEAR_PENDING_EXCEPTION; | |
| 203 } | |
| 204 } | |
| 205 | |
| 206 // Wrapper to trace JVM functions | |
| 207 | |
| 208 #ifdef ASSERT | |
| 209 class JVMTraceWrapper : public StackObj { | |
| 210 public: | |
| 211 JVMTraceWrapper(const char* format, ...) { | |
| 212 if (TraceJVMCalls) { | |
| 213 va_list ap; | |
| 214 va_start(ap, format); | |
| 215 tty->print("JVM "); | |
| 216 tty->vprint_cr(format, ap); | |
| 217 va_end(ap); | |
| 218 } | |
| 219 } | |
| 220 }; | |
| 221 | |
| 222 Histogram* JVMHistogram; | |
| 223 volatile jint JVMHistogram_lock = 0; | |
| 224 | |
| 225 class JVMHistogramElement : public HistogramElement { | |
| 226 public: | |
| 227 JVMHistogramElement(const char* name); | |
| 228 }; | |
| 229 | |
| 230 JVMHistogramElement::JVMHistogramElement(const char* elementName) { | |
| 231 _name = elementName; | |
| 232 uintx count = 0; | |
| 233 | |
| 234 while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) { | |
| 235 while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) { | |
| 236 count +=1; | |
| 237 if ( (WarnOnStalledSpinLock > 0) | |
| 238 && (count % WarnOnStalledSpinLock == 0)) { | |
| 239 warning("JVMHistogram_lock seems to be stalled"); | |
| 240 } | |
| 241 } | |
| 242 } | |
| 243 | |
| 244 if(JVMHistogram == NULL) | |
| 245 JVMHistogram = new Histogram("JVM Call Counts",100); | |
| 246 | |
| 247 JVMHistogram->add_element(this); | |
| 248 Atomic::dec(&JVMHistogram_lock); | |
| 249 } | |
| 250 | |
| 251 #define JVMCountWrapper(arg) \ | |
| 252 static JVMHistogramElement* e = new JVMHistogramElement(arg); \ | |
| 253 if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen! | |
| 254 | |
| 255 #define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) | |
| 256 #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) | |
| 257 #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) | |
| 258 #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) | |
| 259 #else | |
| 260 #define JVMWrapper(arg1) | |
| 261 #define JVMWrapper2(arg1, arg2) | |
| 262 #define JVMWrapper3(arg1, arg2, arg3) | |
| 263 #define JVMWrapper4(arg1, arg2, arg3, arg4) | |
| 264 #endif | |
| 265 | |
| 266 | |
| 267 // Interface version ///////////////////////////////////////////////////////////////////// | |
| 268 | |
| 269 | |
| 270 JVM_LEAF(jint, JVM_GetInterfaceVersion()) | |
| 271 return JVM_INTERFACE_VERSION; | |
| 272 JVM_END | |
| 273 | |
| 274 | |
| 275 // java.lang.System ////////////////////////////////////////////////////////////////////// | |
| 276 | |
| 277 | |
| 278 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored)) | |
| 279 JVMWrapper("JVM_CurrentTimeMillis"); | |
| 280 return os::javaTimeMillis(); | |
| 281 JVM_END | |
| 282 | |
| 283 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored)) | |
| 284 JVMWrapper("JVM_NanoTime"); | |
| 285 return os::javaTimeNanos(); | |
| 286 JVM_END | |
| 287 | |
| 288 | |
| 289 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, | |
| 290 jobject dst, jint dst_pos, jint length)) | |
| 291 JVMWrapper("JVM_ArrayCopy"); | |
| 292 // Check if we have null pointers | |
| 293 if (src == NULL || dst == NULL) { | |
| 294 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 295 } | |
| 296 arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); | |
| 297 arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); | |
| 298 assert(s->is_oop(), "JVM_ArrayCopy: src not an oop"); | |
| 299 assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); | |
| 300 // Do copy | |
| 301 Klass::cast(s->klass())->copy_array(s, src_pos, d, dst_pos, length, thread); | |
| 302 JVM_END | |
| 303 | |
| 304 | |
| 305 static void set_property(Handle props, const char* key, const char* value, TRAPS) { | |
| 306 JavaValue r(T_OBJECT); | |
| 307 // public synchronized Object put(Object key, Object value); | |
| 308 HandleMark hm(THREAD); | |
| 309 Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK); | |
| 310 Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK); | |
| 311 JavaCalls::call_virtual(&r, | |
| 312 props, | |
| 1142 | 313 KlassHandle(THREAD, SystemDictionary::Properties_klass()), |
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314 vmSymbols::put_name(), |
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315 vmSymbols::object_object_object_signature(), |
| 0 | 316 key_str, |
| 317 value_str, | |
| 318 THREAD); | |
| 319 } | |
| 320 | |
| 321 | |
| 322 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties)); | |
| 323 | |
| 324 | |
| 325 JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties)) | |
| 326 JVMWrapper("JVM_InitProperties"); | |
| 327 ResourceMark rm; | |
| 328 | |
| 329 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
| 330 | |
| 331 // System property list includes both user set via -D option and | |
| 332 // jvm system specific properties. | |
| 333 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
| 334 PUTPROP(props, p->key(), p->value()); | |
| 335 } | |
| 336 | |
| 337 // Convert the -XX:MaxDirectMemorySize= command line flag | |
| 338 // to the sun.nio.MaxDirectMemorySize property. | |
| 339 // Do this after setting user properties to prevent people | |
| 340 // from setting the value with a -D option, as requested. | |
| 341 { | |
| 342 char as_chars[256]; | |
| 343 jio_snprintf(as_chars, sizeof(as_chars), INTX_FORMAT, MaxDirectMemorySize); | |
| 344 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); | |
| 345 } | |
| 346 | |
| 347 // JVM monitoring and management support | |
| 348 // Add the sun.management.compiler property for the compiler's name | |
| 349 { | |
| 350 #undef CSIZE | |
| 351 #if defined(_LP64) || defined(_WIN64) | |
| 352 #define CSIZE "64-Bit " | |
| 353 #else | |
| 354 #define CSIZE | |
| 355 #endif // 64bit | |
| 356 | |
| 357 #ifdef TIERED | |
| 358 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; | |
| 359 #else | |
| 360 #if defined(COMPILER1) | |
| 361 const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; | |
| 362 #elif defined(COMPILER2) | |
| 363 const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; | |
| 364 #else | |
| 365 const char* compiler_name = ""; | |
| 366 #endif // compilers | |
| 367 #endif // TIERED | |
| 368 | |
| 369 if (*compiler_name != '\0' && | |
| 370 (Arguments::mode() != Arguments::_int)) { | |
| 371 PUTPROP(props, "sun.management.compiler", compiler_name); | |
| 372 } | |
| 373 } | |
| 374 | |
| 375 return properties; | |
| 376 JVM_END | |
| 377 | |
| 378 | |
| 379 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// | |
| 380 | |
| 381 extern volatile jint vm_created; | |
| 382 | |
| 383 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
| 384 if (vm_created != 0 && (code == 0)) { | |
| 385 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
| 386 Universe::run_finalizers_on_exit(); | |
| 387 } | |
| 388 before_exit(thread); | |
| 389 vm_exit(code); | |
| 390 JVM_END | |
| 391 | |
| 392 | |
| 393 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
| 394 before_exit(thread); | |
| 395 vm_exit(code); | |
| 396 JVM_END | |
| 397 | |
| 398 | |
| 399 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
| 400 register_on_exit_function(func); | |
| 401 JVM_END | |
| 402 | |
| 403 | |
| 404 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
| 405 JVMWrapper("JVM_GC"); | |
| 406 if (!DisableExplicitGC) { | |
| 407 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
| 408 } | |
| 409 JVM_END | |
| 410 | |
| 411 | |
| 412 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
| 413 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
| 414 return Universe::heap()->millis_since_last_gc(); | |
| 415 JVM_END | |
| 416 | |
| 417 | |
| 418 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
| 419 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
| 420 JVM_END | |
| 421 | |
| 422 | |
| 423 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
| 424 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
| 425 JVM_END | |
| 426 | |
| 427 static inline jlong convert_size_t_to_jlong(size_t val) { | |
| 428 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
| 429 NOT_LP64 (return (jlong)val;) | |
| 430 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
| 431 } | |
| 432 | |
| 433 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
| 434 JVMWrapper("JVM_TotalMemory"); | |
| 435 size_t n = Universe::heap()->capacity(); | |
| 436 return convert_size_t_to_jlong(n); | |
| 437 JVM_END | |
| 438 | |
| 439 | |
| 440 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
| 441 JVMWrapper("JVM_FreeMemory"); | |
| 442 CollectedHeap* ch = Universe::heap(); | |
|
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443 size_t n; |
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444 { |
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445 MutexLocker x(Heap_lock); |
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446 n = ch->capacity() - ch->used(); |
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447 } |
| 0 | 448 return convert_size_t_to_jlong(n); |
| 449 JVM_END | |
| 450 | |
| 451 | |
| 452 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
| 453 JVMWrapper("JVM_MaxMemory"); | |
| 454 size_t n = Universe::heap()->max_capacity(); | |
| 455 return convert_size_t_to_jlong(n); | |
| 456 JVM_END | |
| 457 | |
| 458 | |
| 459 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
| 460 JVMWrapper("JVM_ActiveProcessorCount"); | |
| 461 return os::active_processor_count(); | |
| 462 JVM_END | |
| 463 | |
| 464 | |
| 465 | |
| 466 // java.lang.Throwable ////////////////////////////////////////////////////// | |
| 467 | |
| 468 | |
| 469 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
| 470 JVMWrapper("JVM_FillInStackTrace"); | |
| 471 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
| 472 java_lang_Throwable::fill_in_stack_trace(exception); | |
| 473 JVM_END | |
| 474 | |
| 475 | |
| 476 JVM_ENTRY(void, JVM_PrintStackTrace(JNIEnv *env, jobject receiver, jobject printable)) | |
| 477 JVMWrapper("JVM_PrintStackTrace"); | |
| 478 // Note: This is no longer used in Merlin, but we still support it for compatibility. | |
| 479 oop exception = JNIHandles::resolve_non_null(receiver); | |
| 480 oop stream = JNIHandles::resolve_non_null(printable); | |
| 481 java_lang_Throwable::print_stack_trace(exception, stream); | |
| 482 JVM_END | |
| 483 | |
| 484 | |
| 485 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
| 486 JVMWrapper("JVM_GetStackTraceDepth"); | |
| 487 oop exception = JNIHandles::resolve(throwable); | |
| 488 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
| 489 JVM_END | |
| 490 | |
| 491 | |
| 492 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
| 493 JVMWrapper("JVM_GetStackTraceElement"); | |
| 494 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
| 495 oop exception = JNIHandles::resolve(throwable); | |
| 496 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
| 497 return JNIHandles::make_local(env, element); | |
| 498 JVM_END | |
| 499 | |
| 500 | |
| 501 // java.lang.Object /////////////////////////////////////////////// | |
| 502 | |
| 503 | |
| 504 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
| 505 JVMWrapper("JVM_IHashCode"); | |
| 506 // as implemented in the classic virtual machine; return 0 if object is NULL | |
| 507 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
| 508 JVM_END | |
| 509 | |
| 510 | |
| 511 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
| 512 JVMWrapper("JVM_MonitorWait"); | |
| 513 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 514 assert(obj->is_instance() || obj->is_array(), "JVM_MonitorWait must apply to an object"); | |
| 515 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
| 516 if (JvmtiExport::should_post_monitor_wait()) { | |
| 517 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
| 518 } | |
| 519 ObjectSynchronizer::wait(obj, ms, CHECK); | |
| 520 JVM_END | |
| 521 | |
| 522 | |
| 523 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
| 524 JVMWrapper("JVM_MonitorNotify"); | |
| 525 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 526 assert(obj->is_instance() || obj->is_array(), "JVM_MonitorNotify must apply to an object"); | |
| 527 ObjectSynchronizer::notify(obj, CHECK); | |
| 528 JVM_END | |
| 529 | |
| 530 | |
| 531 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
| 532 JVMWrapper("JVM_MonitorNotifyAll"); | |
| 533 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 534 assert(obj->is_instance() || obj->is_array(), "JVM_MonitorNotifyAll must apply to an object"); | |
| 535 ObjectSynchronizer::notifyall(obj, CHECK); | |
| 536 JVM_END | |
| 537 | |
| 538 | |
| 539 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
| 540 JVMWrapper("JVM_Clone"); | |
| 541 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 542 const KlassHandle klass (THREAD, obj->klass()); | |
| 543 JvmtiVMObjectAllocEventCollector oam; | |
| 544 | |
| 545 #ifdef ASSERT | |
| 546 // Just checking that the cloneable flag is set correct | |
| 547 if (obj->is_javaArray()) { | |
| 548 guarantee(klass->is_cloneable(), "all arrays are cloneable"); | |
| 549 } else { | |
| 550 guarantee(obj->is_instance(), "should be instanceOop"); | |
| 1142 | 551 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
| 0 | 552 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
| 553 } | |
| 554 #endif | |
| 555 | |
| 556 // Check if class of obj supports the Cloneable interface. | |
| 557 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
| 558 if (!klass->is_cloneable()) { | |
| 559 ResourceMark rm(THREAD); | |
| 560 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
| 561 } | |
| 562 | |
| 563 // Make shallow object copy | |
| 564 const int size = obj->size(); | |
| 565 oop new_obj = NULL; | |
| 566 if (obj->is_javaArray()) { | |
| 567 const int length = ((arrayOop)obj())->length(); | |
| 568 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
| 569 } else { | |
| 570 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
| 571 } | |
| 572 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
| 573 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
| 574 // be suspended in the middle of copying the pointer and end up with parts | |
| 575 // of two different pointers in the field. Subsequent dereferences will crash. | |
| 576 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
| 577 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
| 578 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
| 579 // The same is true of StubRoutines::object_copy and the various oop_copy | |
| 580 // variants, and of the code generated by the inline_native_clone intrinsic. | |
| 581 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
| 582 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
| 583 (size_t)align_object_size(size) / HeapWordsPerLong); | |
| 584 // Clear the header | |
| 585 new_obj->init_mark(); | |
| 586 | |
| 587 // Store check (mark entire object and let gc sort it out) | |
| 588 BarrierSet* bs = Universe::heap()->barrier_set(); | |
| 589 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
| 590 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
| 591 | |
| 592 // Caution: this involves a java upcall, so the clone should be | |
| 593 // "gc-robust" by this stage. | |
| 594 if (klass->has_finalizer()) { | |
| 595 assert(obj->is_instance(), "should be instanceOop"); | |
| 596 new_obj = instanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); | |
| 597 } | |
| 598 | |
| 599 return JNIHandles::make_local(env, oop(new_obj)); | |
| 600 JVM_END | |
| 601 | |
| 602 // java.lang.Compiler //////////////////////////////////////////////////// | |
| 603 | |
| 604 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
| 605 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
| 606 // functions are all silently ignored unless JVM warnings are printed. | |
| 607 | |
| 608 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
| 609 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
| 610 JVM_END | |
| 611 | |
| 612 | |
| 613 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
| 614 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
| 615 return JNI_FALSE; | |
| 616 JVM_END | |
| 617 | |
| 618 | |
| 619 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
| 620 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
| 621 return JNI_FALSE; | |
| 622 JVM_END | |
| 623 | |
| 624 | |
| 625 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
| 626 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
| 627 return JNI_FALSE; | |
| 628 JVM_END | |
| 629 | |
| 630 | |
| 631 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
| 632 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
| 633 return NULL; | |
| 634 JVM_END | |
| 635 | |
| 636 | |
| 637 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
| 638 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
| 639 JVM_END | |
| 640 | |
| 641 | |
| 642 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
| 643 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
| 644 JVM_END | |
| 645 | |
| 646 | |
| 647 | |
| 648 // Error message support ////////////////////////////////////////////////////// | |
| 649 | |
| 650 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
| 651 JVMWrapper("JVM_GetLastErrorString"); | |
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652 return (jint)os::lasterror(buf, len); |
| 0 | 653 JVM_END |
| 654 | |
| 655 | |
| 656 // java.io.File /////////////////////////////////////////////////////////////// | |
| 657 | |
| 658 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
| 659 JVMWrapper2("JVM_NativePath (%s)", path); | |
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660 return os::native_path(path); |
| 0 | 661 JVM_END |
| 662 | |
| 663 | |
| 664 // Misc. class handling /////////////////////////////////////////////////////////// | |
| 665 | |
| 666 | |
| 667 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
| 668 JVMWrapper("JVM_GetCallerClass"); | |
| 669 klassOop k = thread->security_get_caller_class(depth); | |
| 670 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); | |
| 671 JVM_END | |
| 672 | |
| 673 | |
| 674 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
| 675 JVMWrapper("JVM_FindPrimitiveClass"); | |
| 676 oop mirror = NULL; | |
| 677 BasicType t = name2type(utf); | |
| 678 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
| 679 mirror = Universe::java_mirror(t); | |
| 680 } | |
| 681 if (mirror == NULL) { | |
| 682 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
| 683 } else { | |
| 684 return (jclass) JNIHandles::make_local(env, mirror); | |
| 685 } | |
| 686 JVM_END | |
| 687 | |
| 688 | |
| 689 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
| 690 JVMWrapper("JVM_ResolveClass"); | |
| 691 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
| 692 JVM_END | |
| 693 | |
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694 |
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695 // Returns a class loaded by the bootstrap class loader; or null |
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696 // if not found. ClassNotFoundException is not thrown. |
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697 // |
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698 // Rationale behind JVM_FindClassFromBootLoader |
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699 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
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700 // b> because of (a) java.dll has a direct dependecy on the unexported |
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701 // private symbol "_JVM_FindClassFromClassLoader@20". |
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702 // c> the launcher cannot use the private symbol as it dynamically opens |
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703 // the entry point, so if something changes, the launcher will fail |
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704 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
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705 // stable exported interface. |
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706 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
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707 // signature to change from _JVM_FindClassFromClassLoader@20 to |
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708 // JVM_FindClassFromClassLoader and will not be backward compatible |
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709 // with older JDKs. |
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710 // Thus a public/stable exported entry point is the right solution, |
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711 // public here means public in linker semantics, and is exported only |
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712 // to the JDK, and is not intended to be a public API. |
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713 |
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714 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
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715 const char* name)) |
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716 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
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717 |
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718 // Java libraries should ensure that name is never null... |
|
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719 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
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720 // It's impossible to create this class; the name cannot fit |
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721 // into the constant pool. |
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722 return NULL; |
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723 } |
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724 |
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725 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
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726 klassOop k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
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727 if (k == NULL) { |
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728 return NULL; |
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729 } |
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730 |
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731 if (TraceClassResolution) { |
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732 trace_class_resolution(k); |
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733 } |
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734 return (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); |
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735 JVM_END |
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736 |
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737 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
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738 jboolean init, jobject loader, |
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739 jboolean throwError)) |
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740 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
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741 throwError ? "error" : "exception"); |
| 388 | 742 // Java libraries should ensure that name is never null... |
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743 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
| 388 | 744 // It's impossible to create this class; the name cannot fit |
| 745 // into the constant pool. | |
| 746 if (throwError) { | |
| 747 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 748 } else { | |
| 749 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
| 750 } | |
| 751 } | |
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752 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
| 388 | 753 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
| 754 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 755 Handle(), throwError, THREAD); | |
| 756 | |
| 757 if (TraceClassResolution && result != NULL) { | |
| 758 trace_class_resolution(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(result))); | |
| 759 } | |
| 760 return result; | |
| 0 | 761 JVM_END |
| 762 | |
| 763 | |
| 764 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
| 765 jboolean init, jclass from)) | |
| 766 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
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767 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
| 0 | 768 // It's impossible to create this class; the name cannot fit |
| 769 // into the constant pool. | |
| 770 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 771 } | |
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772 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
| 0 | 773 oop from_class_oop = JNIHandles::resolve(from); |
| 774 klassOop from_class = (from_class_oop == NULL) | |
| 775 ? (klassOop)NULL | |
| 776 : java_lang_Class::as_klassOop(from_class_oop); | |
| 777 oop class_loader = NULL; | |
| 778 oop protection_domain = NULL; | |
| 779 if (from_class != NULL) { | |
| 780 class_loader = Klass::cast(from_class)->class_loader(); | |
| 781 protection_domain = Klass::cast(from_class)->protection_domain(); | |
| 782 } | |
| 783 Handle h_loader(THREAD, class_loader); | |
| 784 Handle h_prot (THREAD, protection_domain); | |
| 785 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 786 h_prot, true, thread); | |
| 787 | |
| 788 if (TraceClassResolution && result != NULL) { | |
| 789 // this function is generally only used for class loading during verification. | |
| 790 ResourceMark rm; | |
| 791 oop from_mirror = JNIHandles::resolve_non_null(from); | |
| 792 klassOop from_class = java_lang_Class::as_klassOop(from_mirror); | |
| 793 const char * from_name = Klass::cast(from_class)->external_name(); | |
| 794 | |
| 795 oop mirror = JNIHandles::resolve_non_null(result); | |
| 796 klassOop to_class = java_lang_Class::as_klassOop(mirror); | |
| 797 const char * to = Klass::cast(to_class)->external_name(); | |
| 798 tty->print("RESOLVE %s %s (verification)\n", from_name, to); | |
| 799 } | |
| 800 | |
| 801 return result; | |
| 802 JVM_END | |
| 803 | |
| 804 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
| 805 if (loader.is_null()) { | |
| 806 return; | |
| 807 } | |
| 808 | |
| 809 // check whether the current caller thread holds the lock or not. | |
| 810 // If not, increment the corresponding counter | |
| 811 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
| 812 ObjectSynchronizer::owner_self) { | |
| 813 counter->inc(); | |
| 814 } | |
| 815 } | |
| 816 | |
| 817 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
|
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818 // and JVM_DefineClassWithSourceCond() |
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819 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
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820 jobject loader, const jbyte *buf, |
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821 jsize len, jobject pd, const char *source, |
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822 jboolean verify, TRAPS) { |
|
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823 if (source == NULL) source = "__JVM_DefineClass__"; |
| 0 | 824 |
|
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825 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
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826 JavaThread* jt = (JavaThread*) THREAD; |
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827 |
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828 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
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829 ClassLoader::perf_define_appclass_selftime(), |
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830 ClassLoader::perf_define_appclasses(), |
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831 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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832 jt->get_thread_stat()->perf_timers_addr(), |
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833 PerfClassTraceTime::DEFINE_CLASS); |
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834 |
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835 if (UsePerfData) { |
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836 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
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837 } |
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838 |
| 0 | 839 // Since exceptions can be thrown, class initialization can take place |
| 840 // if name is NULL no check for class name in .class stream has to be made. | |
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841 TempNewSymbol class_name = NULL; |
| 0 | 842 if (name != NULL) { |
| 843 const int str_len = (int)strlen(name); | |
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844 if (str_len > Symbol::max_length()) { |
| 0 | 845 // It's impossible to create this class; the name cannot fit |
| 846 // into the constant pool. | |
| 847 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 848 } | |
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849 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
| 0 | 850 } |
| 851 | |
| 852 ResourceMark rm(THREAD); | |
| 853 ClassFileStream st((u1*) buf, len, (char *)source); | |
| 854 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
| 855 if (UsePerfData) { | |
| 856 is_lock_held_by_thread(class_loader, | |
| 857 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
| 858 THREAD); | |
| 859 } | |
| 860 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
| 861 klassOop k = SystemDictionary::resolve_from_stream(class_name, class_loader, | |
| 862 protection_domain, &st, | |
|
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863 verify != 0, |
| 0 | 864 CHECK_NULL); |
| 865 | |
| 866 if (TraceClassResolution && k != NULL) { | |
| 867 trace_class_resolution(k); | |
| 868 } | |
| 869 | |
| 870 return (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); | |
| 871 } | |
| 872 | |
| 873 | |
| 874 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
| 875 JVMWrapper2("JVM_DefineClass %s", name); | |
| 876 | |
|
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877 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
| 0 | 878 JVM_END |
| 879 | |
| 880 | |
| 881 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
| 882 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
| 883 | |
|
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884 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
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885 JVM_END |
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886 |
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887 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
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888 jobject loader, const jbyte *buf, |
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889 jsize len, jobject pd, |
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890 const char *source, jboolean verify)) |
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891 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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892 |
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893 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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894 JVM_END |
| 0 | 895 |
| 896 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
| 897 JVMWrapper("JVM_FindLoadedClass"); | |
| 898 ResourceMark rm(THREAD); | |
| 899 | |
| 900 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 901 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
| 902 | |
| 903 const char* str = java_lang_String::as_utf8_string(string()); | |
| 904 // Sanity check, don't expect null | |
| 905 if (str == NULL) return NULL; | |
| 906 | |
| 907 const int str_len = (int)strlen(str); | |
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908 if (str_len > Symbol::max_length()) { |
| 0 | 909 // It's impossible to create this class; the name cannot fit |
| 910 // into the constant pool. | |
| 911 return NULL; | |
| 912 } | |
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913 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
| 0 | 914 |
| 915 // Security Note: | |
| 916 // The Java level wrapper will perform the necessary security check allowing | |
| 917 // us to pass the NULL as the initiating class loader. | |
| 918 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
| 919 if (UsePerfData) { | |
| 920 is_lock_held_by_thread(h_loader, | |
| 921 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
| 922 THREAD); | |
| 923 } | |
| 924 | |
| 925 klassOop k = SystemDictionary::find_instance_or_array_klass(klass_name, | |
| 926 h_loader, | |
| 927 Handle(), | |
| 928 CHECK_NULL); | |
| 929 | |
| 930 return (k == NULL) ? NULL : | |
| 931 (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); | |
| 932 JVM_END | |
| 933 | |
| 934 | |
| 935 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
| 936 | |
| 937 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
| 938 assert (cls != NULL, "illegal class"); | |
| 939 JVMWrapper("JVM_GetClassName"); | |
| 940 JvmtiVMObjectAllocEventCollector oam; | |
| 941 ResourceMark rm(THREAD); | |
| 942 const char* name; | |
| 943 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 944 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
| 945 } else { | |
| 946 // Consider caching interned string in Klass | |
| 947 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
| 948 assert(k->is_klass(), "just checking"); | |
| 949 name = Klass::cast(k)->external_name(); | |
| 950 } | |
| 951 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
| 952 return (jstring) JNIHandles::make_local(env, result); | |
| 953 JVM_END | |
| 954 | |
| 955 | |
| 956 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
| 957 JVMWrapper("JVM_GetClassInterfaces"); | |
| 958 JvmtiVMObjectAllocEventCollector oam; | |
| 959 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 960 | |
| 961 // Special handling for primitive objects | |
| 962 if (java_lang_Class::is_primitive(mirror)) { | |
| 963 // Primitive objects does not have any interfaces | |
| 1142 | 964 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 965 return (jobjectArray) JNIHandles::make_local(env, r); |
| 966 } | |
| 967 | |
| 968 KlassHandle klass(thread, java_lang_Class::as_klassOop(mirror)); | |
| 969 // Figure size of result array | |
| 970 int size; | |
| 971 if (klass->oop_is_instance()) { | |
| 972 size = instanceKlass::cast(klass())->local_interfaces()->length(); | |
| 973 } else { | |
| 974 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
| 975 size = 2; | |
| 976 } | |
| 977 | |
| 978 // Allocate result array | |
| 1142 | 979 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
| 0 | 980 objArrayHandle result (THREAD, r); |
| 981 // Fill in result | |
| 982 if (klass->oop_is_instance()) { | |
| 983 // Regular instance klass, fill in all local interfaces | |
| 984 for (int index = 0; index < size; index++) { | |
| 985 klassOop k = klassOop(instanceKlass::cast(klass())->local_interfaces()->obj_at(index)); | |
| 986 result->obj_at_put(index, Klass::cast(k)->java_mirror()); | |
| 987 } | |
| 988 } else { | |
| 989 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
| 1142 | 990 result->obj_at_put(0, Klass::cast(SystemDictionary::Cloneable_klass())->java_mirror()); |
| 991 result->obj_at_put(1, Klass::cast(SystemDictionary::Serializable_klass())->java_mirror()); | |
| 0 | 992 } |
| 993 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 994 JVM_END | |
| 995 | |
| 996 | |
| 997 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
| 998 JVMWrapper("JVM_GetClassLoader"); | |
| 999 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1000 return NULL; | |
| 1001 } | |
| 1002 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 1003 oop loader = Klass::cast(k)->class_loader(); | |
| 1004 return JNIHandles::make_local(env, loader); | |
| 1005 JVM_END | |
| 1006 | |
| 1007 | |
| 1008 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
| 1009 JVMWrapper("JVM_IsInterface"); | |
| 1010 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1011 if (java_lang_Class::is_primitive(mirror)) { | |
| 1012 return JNI_FALSE; | |
| 1013 } | |
| 1014 klassOop k = java_lang_Class::as_klassOop(mirror); | |
| 1015 jboolean result = Klass::cast(k)->is_interface(); | |
| 1016 assert(!result || Klass::cast(k)->oop_is_instance(), | |
| 1017 "all interfaces are instance types"); | |
| 1018 // The compiler intrinsic for isInterface tests the | |
| 1019 // Klass::_access_flags bits in the same way. | |
| 1020 return result; | |
| 1021 JVM_END | |
| 1022 | |
| 1023 | |
| 1024 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
| 1025 JVMWrapper("JVM_GetClassSigners"); | |
| 1026 JvmtiVMObjectAllocEventCollector oam; | |
| 1027 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1028 // There are no signers for primitive types | |
| 1029 return NULL; | |
| 1030 } | |
| 1031 | |
| 1032 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 1033 objArrayOop signers = NULL; | |
| 1034 if (Klass::cast(k)->oop_is_instance()) { | |
| 1035 signers = instanceKlass::cast(k)->signers(); | |
| 1036 } | |
| 1037 | |
| 1038 // If there are no signers set in the class, or if the class | |
| 1039 // is an array, return NULL. | |
| 1040 if (signers == NULL) return NULL; | |
| 1041 | |
| 1042 // copy of the signers array | |
| 1043 klassOop element = objArrayKlass::cast(signers->klass())->element_klass(); | |
| 1044 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); | |
| 1045 for (int index = 0; index < signers->length(); index++) { | |
| 1046 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
| 1047 } | |
| 1048 | |
| 1049 // return the copy | |
| 1050 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
| 1051 JVM_END | |
| 1052 | |
| 1053 | |
| 1054 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
| 1055 JVMWrapper("JVM_SetClassSigners"); | |
| 1056 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1057 // This call is ignored for primitive types and arrays. | |
| 1058 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
| 1059 // be called with an array. Only the bootstrap loader creates arrays. | |
| 1060 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 1061 if (Klass::cast(k)->oop_is_instance()) { | |
| 1062 instanceKlass::cast(k)->set_signers(objArrayOop(JNIHandles::resolve(signers))); | |
| 1063 } | |
| 1064 } | |
| 1065 JVM_END | |
| 1066 | |
| 1067 | |
| 1068 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
| 1069 JVMWrapper("JVM_GetProtectionDomain"); | |
| 1070 if (JNIHandles::resolve(cls) == NULL) { | |
| 1071 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
| 1072 } | |
| 1073 | |
| 1074 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1075 // Primitive types does not have a protection domain. | |
| 1076 return NULL; | |
| 1077 } | |
| 1078 | |
| 1079 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
| 1080 return (jobject) JNIHandles::make_local(env, Klass::cast(k)->protection_domain()); | |
| 1081 JVM_END | |
| 1082 | |
| 1083 | |
| 1084 // Obsolete since 1.2 (Class.setProtectionDomain removed), although | |
| 1085 // still defined in core libraries as of 1.5. | |
| 1086 JVM_ENTRY(void, JVM_SetProtectionDomain(JNIEnv *env, jclass cls, jobject protection_domain)) | |
| 1087 JVMWrapper("JVM_SetProtectionDomain"); | |
| 1088 if (JNIHandles::resolve(cls) == NULL) { | |
| 1089 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 1090 } | |
| 1091 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1092 // Call is ignored for primitive types | |
| 1093 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
| 1094 | |
| 1095 // cls won't be an array, as this called only from ClassLoader.defineClass | |
| 1096 if (Klass::cast(k)->oop_is_instance()) { | |
| 1097 oop pd = JNIHandles::resolve(protection_domain); | |
| 1098 assert(pd == NULL || pd->is_oop(), "just checking"); | |
| 1099 instanceKlass::cast(k)->set_protection_domain(pd); | |
| 1100 } | |
| 1101 } | |
| 1102 JVM_END | |
| 1103 | |
| 1104 | |
| 1105 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
| 1106 JVMWrapper("JVM_DoPrivileged"); | |
| 1107 | |
| 1108 if (action == NULL) { | |
| 1109 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
| 1110 } | |
| 1111 | |
| 1112 // Stack allocated list of privileged stack elements | |
| 1113 PrivilegedElement pi; | |
| 1114 | |
| 1115 // Check that action object understands "Object run()" | |
| 1116 Handle object (THREAD, JNIHandles::resolve(action)); | |
| 1117 | |
| 1118 // get run() method | |
| 1119 methodOop m_oop = Klass::cast(object->klass())->uncached_lookup_method( | |
| 1120 vmSymbols::run_method_name(), | |
| 1121 vmSymbols::void_object_signature()); | |
| 1122 methodHandle m (THREAD, m_oop); | |
| 1123 if (m.is_null() || !m->is_method() || !methodOop(m())->is_public() || methodOop(m())->is_static()) { | |
| 1124 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); | |
| 1125 } | |
| 1126 | |
| 1127 // Compute the frame initiating the do privileged operation and setup the privileged stack | |
| 1128 vframeStream vfst(thread); | |
| 1129 vfst.security_get_caller_frame(1); | |
| 1130 | |
| 1131 if (!vfst.at_end()) { | |
| 1132 pi.initialize(&vfst, JNIHandles::resolve(context), thread->privileged_stack_top(), CHECK_NULL); | |
| 1133 thread->set_privileged_stack_top(&pi); | |
| 1134 } | |
| 1135 | |
| 1136 | |
| 1137 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
| 1138 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
| 1139 Handle pending_exception; | |
| 1140 JavaValue result(T_OBJECT); | |
| 1141 JavaCallArguments args(object); | |
| 1142 JavaCalls::call(&result, m, &args, THREAD); | |
| 1143 | |
| 1144 // done with action, remove ourselves from the list | |
| 1145 if (!vfst.at_end()) { | |
| 1146 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
| 1147 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
| 1148 } | |
| 1149 | |
| 1150 if (HAS_PENDING_EXCEPTION) { | |
| 1151 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
| 1152 CLEAR_PENDING_EXCEPTION; | |
| 1153 | |
| 1142 | 1154 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
| 1155 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
| 0 | 1156 // Throw a java.security.PrivilegedActionException(Exception e) exception |
| 1157 JavaCallArguments args(pending_exception); | |
|
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1158 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1159 vmSymbols::exception_void_signature(), |
| 0 | 1160 &args); |
| 1161 } | |
| 1162 } | |
| 1163 | |
| 1164 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
| 1165 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
| 1166 JVM_END | |
| 1167 | |
| 1168 | |
| 1169 // Returns the inherited_access_control_context field of the running thread. | |
| 1170 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1171 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
| 1172 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
| 1173 return JNIHandles::make_local(env, result); | |
| 1174 JVM_END | |
| 1175 | |
| 1176 class RegisterArrayForGC { | |
| 1177 private: | |
| 1178 JavaThread *_thread; | |
| 1179 public: | |
| 1180 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
| 1181 _thread = thread; | |
| 1182 _thread->register_array_for_gc(array); | |
| 1183 } | |
| 1184 | |
| 1185 ~RegisterArrayForGC() { | |
| 1186 _thread->register_array_for_gc(NULL); | |
| 1187 } | |
| 1188 }; | |
| 1189 | |
| 1190 | |
| 1191 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1192 JVMWrapper("JVM_GetStackAccessControlContext"); | |
| 1193 if (!UsePrivilegedStack) return NULL; | |
| 1194 | |
| 1195 ResourceMark rm(THREAD); | |
| 1196 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
| 1197 JvmtiVMObjectAllocEventCollector oam; | |
| 1198 | |
| 1199 // count the protection domains on the execution stack. We collapse | |
| 1200 // duplicate consecutive protection domains into a single one, as | |
| 1201 // well as stopping when we hit a privileged frame. | |
| 1202 | |
| 1203 // Use vframeStream to iterate through Java frames | |
| 1204 vframeStream vfst(thread); | |
| 1205 | |
| 1206 oop previous_protection_domain = NULL; | |
| 1207 Handle privileged_context(thread, NULL); | |
| 1208 bool is_privileged = false; | |
| 1209 oop protection_domain = NULL; | |
| 1210 | |
| 1211 for(; !vfst.at_end(); vfst.next()) { | |
| 1212 // get method of frame | |
| 1213 methodOop method = vfst.method(); | |
| 1214 intptr_t* frame_id = vfst.frame_id(); | |
| 1215 | |
| 1216 // check the privileged frames to see if we have a match | |
| 1217 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
| 1218 // this frame is privileged | |
| 1219 is_privileged = true; | |
| 1220 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
| 1221 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
| 1222 } else { | |
| 1223 protection_domain = instanceKlass::cast(method->method_holder())->protection_domain(); | |
| 1224 } | |
| 1225 | |
| 1226 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
| 1227 local_array->push(protection_domain); | |
| 1228 previous_protection_domain = protection_domain; | |
| 1229 } | |
| 1230 | |
| 1231 if (is_privileged) break; | |
| 1232 } | |
| 1233 | |
| 1234 | |
| 1235 // either all the domains on the stack were system domains, or | |
| 1236 // we had a privileged system domain | |
| 1237 if (local_array->is_empty()) { | |
| 1238 if (is_privileged && privileged_context.is_null()) return NULL; | |
| 1239 | |
| 1240 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
| 1241 return JNIHandles::make_local(env, result); | |
| 1242 } | |
| 1243 | |
| 1244 // the resource area must be registered in case of a gc | |
| 1245 RegisterArrayForGC ragc(thread, local_array); | |
| 1142 | 1246 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
| 0 | 1247 local_array->length(), CHECK_NULL); |
| 1248 objArrayHandle h_context(thread, context); | |
| 1249 for (int index = 0; index < local_array->length(); index++) { | |
| 1250 h_context->obj_at_put(index, local_array->at(index)); | |
| 1251 } | |
| 1252 | |
| 1253 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
| 1254 | |
| 1255 return JNIHandles::make_local(env, result); | |
| 1256 JVM_END | |
| 1257 | |
| 1258 | |
| 1259 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
| 1260 JVMWrapper("JVM_IsArrayClass"); | |
| 1261 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 1262 return (k != NULL) && Klass::cast(k)->oop_is_javaArray() ? true : false; | |
| 1263 JVM_END | |
| 1264 | |
| 1265 | |
| 1266 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
| 1267 JVMWrapper("JVM_IsPrimitiveClass"); | |
| 1268 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1269 return (jboolean) java_lang_Class::is_primitive(mirror); | |
| 1270 JVM_END | |
| 1271 | |
| 1272 | |
| 1273 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
| 1274 JVMWrapper("JVM_GetComponentType"); | |
| 1275 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1276 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
| 1277 return (jclass) JNIHandles::make_local(env, result); | |
| 1278 JVM_END | |
| 1279 | |
| 1280 | |
| 1281 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
| 1282 JVMWrapper("JVM_GetClassModifiers"); | |
| 1283 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1284 // Primitive type | |
| 1285 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 1286 } | |
| 1287 | |
| 1288 Klass* k = Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls))); | |
| 1289 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); | |
| 1290 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
| 1291 return k->modifier_flags(); | |
| 1292 JVM_END | |
| 1293 | |
| 1294 | |
| 1295 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
| 1296 | |
| 1297 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
| 1298 const int inner_class_info_index = 0; | |
| 1299 const int outer_class_info_index = 1; | |
| 1300 | |
| 1301 JvmtiVMObjectAllocEventCollector oam; | |
| 1302 // ofClass is a reference to a java_lang_Class object. The mirror object | |
| 1303 // of an instanceKlass | |
| 1304 | |
| 1305 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 1306 ! Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_instance()) { | |
| 1142 | 1307 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1308 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1309 } | |
| 1310 | |
| 1311 instanceKlassHandle k(thread, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
| 1312 | |
| 1313 if (k->inner_classes()->length() == 0) { | |
| 1314 // Neither an inner nor outer class | |
| 1142 | 1315 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1316 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1317 } | |
| 1318 | |
| 1319 // find inner class info | |
| 1320 typeArrayHandle icls(thread, k->inner_classes()); | |
| 1321 constantPoolHandle cp(thread, k->constants()); | |
| 1322 int length = icls->length(); | |
| 1323 | |
| 1324 // Allocate temp. result array | |
| 1142 | 1325 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
| 0 | 1326 objArrayHandle result (THREAD, r); |
| 1327 int members = 0; | |
| 1328 | |
| 1329 for(int i = 0; i < length; i += 4) { | |
| 1330 int ioff = icls->ushort_at(i + inner_class_info_index); | |
| 1331 int ooff = icls->ushort_at(i + outer_class_info_index); | |
| 1332 | |
| 1333 if (ioff != 0 && ooff != 0) { | |
| 1334 // Check to see if the name matches the class we're looking for | |
| 1335 // before attempting to find the class. | |
| 1336 if (cp->klass_name_at_matches(k, ooff)) { | |
| 1337 klassOop outer_klass = cp->klass_at(ooff, CHECK_NULL); | |
| 1338 if (outer_klass == k()) { | |
| 1339 klassOop ik = cp->klass_at(ioff, CHECK_NULL); | |
| 1340 instanceKlassHandle inner_klass (THREAD, ik); | |
| 1341 | |
| 1342 // Throws an exception if outer klass has not declared k as | |
| 1343 // an inner klass | |
|
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1344 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
| 0 | 1345 |
| 1346 result->obj_at_put(members, inner_klass->java_mirror()); | |
| 1347 members++; | |
| 1348 } | |
| 1349 } | |
| 1350 } | |
| 1351 } | |
| 1352 | |
| 1353 if (members != length) { | |
| 1354 // Return array of right length | |
| 1142 | 1355 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
| 0 | 1356 for(int i = 0; i < members; i++) { |
| 1357 res->obj_at_put(i, result->obj_at(i)); | |
| 1358 } | |
| 1359 return (jobjectArray)JNIHandles::make_local(env, res); | |
| 1360 } | |
| 1361 | |
| 1362 return (jobjectArray)JNIHandles::make_local(env, result()); | |
| 1363 JVM_END | |
| 1364 | |
| 1365 | |
| 1366 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
|
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1367 { |
| 0 | 1368 // ofClass is a reference to a java_lang_Class object. |
| 1369 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 1370 ! Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_instance()) { | |
| 1371 return NULL; | |
| 1372 } | |
| 1373 | |
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1374 bool inner_is_member = false; |
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1375 klassOop outer_klass |
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1376 = instanceKlass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)) |
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1377 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
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1378 if (outer_klass == NULL) return NULL; // already a top-level class |
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1379 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
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1380 return (jclass) JNIHandles::make_local(env, Klass::cast(outer_klass)->java_mirror()); |
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1381 } |
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1382 JVM_END |
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1383 |
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1384 // should be in instanceKlass.cpp, but is here for historical reasons |
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1385 klassOop instanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
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1386 bool* inner_is_member, |
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1387 TRAPS) { |
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1388 Thread* thread = THREAD; |
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1389 const int inner_class_info_index = inner_class_inner_class_info_offset; |
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1390 const int outer_class_info_index = inner_class_outer_class_info_offset; |
| 0 | 1391 |
| 1392 if (k->inner_classes()->length() == 0) { | |
| 1393 // No inner class info => no declaring class | |
| 1394 return NULL; | |
| 1395 } | |
| 1396 | |
| 1397 typeArrayHandle i_icls(thread, k->inner_classes()); | |
| 1398 constantPoolHandle i_cp(thread, k->constants()); | |
| 1399 int i_length = i_icls->length(); | |
| 1400 | |
| 1401 bool found = false; | |
| 1402 klassOop ok; | |
| 1403 instanceKlassHandle outer_klass; | |
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1404 *inner_is_member = false; |
| 0 | 1405 |
| 1406 // Find inner_klass attribute | |
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1407 for (int i = 0; i < i_length && !found; i += inner_class_next_offset) { |
| 0 | 1408 int ioff = i_icls->ushort_at(i + inner_class_info_index); |
| 1409 int ooff = i_icls->ushort_at(i + outer_class_info_index); | |
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1410 int noff = i_icls->ushort_at(i + inner_class_inner_name_offset); |
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1411 if (ioff != 0) { |
| 0 | 1412 // Check to see if the name matches the class we're looking for |
| 1413 // before attempting to find the class. | |
| 1414 if (i_cp->klass_name_at_matches(k, ioff)) { | |
| 1415 klassOop inner_klass = i_cp->klass_at(ioff, CHECK_NULL); | |
|
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1416 found = (k() == inner_klass); |
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1417 if (found && ooff != 0) { |
| 0 | 1418 ok = i_cp->klass_at(ooff, CHECK_NULL); |
| 1419 outer_klass = instanceKlassHandle(thread, ok); | |
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1420 *inner_is_member = true; |
| 0 | 1421 } |
| 1422 } | |
| 1423 } | |
| 1424 } | |
| 1425 | |
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1426 if (found && outer_klass.is_null()) { |
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1427 // It may be anonymous; try for that. |
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1428 int encl_method_class_idx = k->enclosing_method_class_index(); |
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1429 if (encl_method_class_idx != 0) { |
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1430 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
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1431 outer_klass = instanceKlassHandle(thread, ok); |
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1432 *inner_is_member = false; |
|
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1433 } |
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1434 } |
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1435 |
| 0 | 1436 // If no inner class attribute found for this class. |
|
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1437 if (outer_klass.is_null()) return NULL; |
| 0 | 1438 |
| 1439 // Throws an exception if outer klass has not declared k as an inner klass | |
|
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1440 // We need evidence that each klass knows about the other, or else |
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1441 // the system could allow a spoof of an inner class to gain access rights. |
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1442 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
|
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1443 return outer_klass(); |
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1444 } |
| 0 | 1445 |
| 1446 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
| 1447 assert (cls != NULL, "illegal class"); | |
| 1448 JVMWrapper("JVM_GetClassSignature"); | |
| 1449 JvmtiVMObjectAllocEventCollector oam; | |
| 1450 ResourceMark rm(THREAD); | |
| 1451 // Return null for arrays and primatives | |
| 1452 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1453 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
| 1454 if (Klass::cast(k)->oop_is_instance()) { | |
|
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1455 Symbol* sym = instanceKlass::cast(k)->generic_signature(); |
|
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|
1456 if (sym == NULL) return NULL; |
| 0 | 1457 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 1458 return (jstring) JNIHandles::make_local(env, str()); | |
| 1459 } | |
| 1460 } | |
| 1461 return NULL; | |
| 1462 JVM_END | |
| 1463 | |
| 1464 | |
| 1465 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
| 1466 assert (cls != NULL, "illegal class"); | |
| 1467 JVMWrapper("JVM_GetClassAnnotations"); | |
| 1468 ResourceMark rm(THREAD); | |
| 1469 // Return null for arrays and primitives | |
| 1470 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1471 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
| 1472 if (Klass::cast(k)->oop_is_instance()) { | |
| 1473 return (jbyteArray) JNIHandles::make_local(env, | |
| 1474 instanceKlass::cast(k)->class_annotations()); | |
| 1475 } | |
| 1476 } | |
| 1477 return NULL; | |
| 1478 JVM_END | |
| 1479 | |
| 1480 | |
| 1481 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) | |
| 1482 assert(field != NULL, "illegal field"); | |
| 1483 JVMWrapper("JVM_GetFieldAnnotations"); | |
| 1484 | |
| 1485 // some of this code was adapted from from jni_FromReflectedField | |
| 1486 | |
| 1487 // field is a handle to a java.lang.reflect.Field object | |
| 1488 oop reflected = JNIHandles::resolve_non_null(field); | |
| 1489 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
| 1490 klassOop k = java_lang_Class::as_klassOop(mirror); | |
| 1491 int slot = java_lang_reflect_Field::slot(reflected); | |
| 1492 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
| 1493 | |
| 1494 fieldDescriptor fd; | |
| 1495 KlassHandle kh(THREAD, k); | |
| 1496 intptr_t offset = instanceKlass::cast(kh())->offset_from_fields(slot); | |
| 1497 | |
| 1498 if (modifiers & JVM_ACC_STATIC) { | |
| 1499 // for static fields we only look in the current class | |
| 1500 if (!instanceKlass::cast(kh())->find_local_field_from_offset(offset, | |
| 1501 true, &fd)) { | |
| 1502 assert(false, "cannot find static field"); | |
| 1503 return NULL; // robustness | |
| 1504 } | |
| 1505 } else { | |
| 1506 // for instance fields we start with the current class and work | |
| 1507 // our way up through the superclass chain | |
| 1508 if (!instanceKlass::cast(kh())->find_field_from_offset(offset, false, | |
| 1509 &fd)) { | |
| 1510 assert(false, "cannot find instance field"); | |
| 1511 return NULL; // robustness | |
| 1512 } | |
| 1513 } | |
| 1514 | |
| 1515 return (jbyteArray) JNIHandles::make_local(env, fd.annotations()); | |
| 1516 JVM_END | |
| 1517 | |
| 1518 | |
| 1519 static methodOop jvm_get_method_common(jobject method, TRAPS) { | |
| 1520 // some of this code was adapted from from jni_FromReflectedMethod | |
| 1521 | |
| 1522 oop reflected = JNIHandles::resolve_non_null(method); | |
| 1523 oop mirror = NULL; | |
| 1524 int slot = 0; | |
| 1525 | |
| 1142 | 1526 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
| 0 | 1527 mirror = java_lang_reflect_Constructor::clazz(reflected); |
| 1528 slot = java_lang_reflect_Constructor::slot(reflected); | |
| 1529 } else { | |
| 1142 | 1530 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
| 0 | 1531 "wrong type"); |
| 1532 mirror = java_lang_reflect_Method::clazz(reflected); | |
| 1533 slot = java_lang_reflect_Method::slot(reflected); | |
| 1534 } | |
| 1535 klassOop k = java_lang_Class::as_klassOop(mirror); | |
| 1536 | |
| 1537 KlassHandle kh(THREAD, k); | |
| 1538 methodOop m = instanceKlass::cast(kh())->method_with_idnum(slot); | |
| 1539 if (m == NULL) { | |
| 1540 assert(false, "cannot find method"); | |
| 1541 return NULL; // robustness | |
| 1542 } | |
| 1543 | |
| 1544 return m; | |
| 1545 } | |
| 1546 | |
| 1547 | |
| 1548 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
| 1549 JVMWrapper("JVM_GetMethodAnnotations"); | |
| 1550 | |
| 1551 // method is a handle to a java.lang.reflect.Method object | |
| 1552 methodOop m = jvm_get_method_common(method, CHECK_NULL); | |
| 1553 return (jbyteArray) JNIHandles::make_local(env, m->annotations()); | |
| 1554 JVM_END | |
| 1555 | |
| 1556 | |
| 1557 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
| 1558 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
| 1559 | |
| 1560 // method is a handle to a java.lang.reflect.Method object | |
| 1561 methodOop m = jvm_get_method_common(method, CHECK_NULL); | |
| 1562 return (jbyteArray) JNIHandles::make_local(env, m->annotation_default()); | |
| 1563 JVM_END | |
| 1564 | |
| 1565 | |
| 1566 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
| 1567 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
| 1568 | |
| 1569 // method is a handle to a java.lang.reflect.Method object | |
| 1570 methodOop m = jvm_get_method_common(method, CHECK_NULL); | |
| 1571 return (jbyteArray) JNIHandles::make_local(env, m->parameter_annotations()); | |
| 1572 JVM_END | |
| 1573 | |
| 1574 | |
| 1575 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
| 1576 | |
| 1577 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1578 { | |
| 1579 JVMWrapper("JVM_GetClassDeclaredFields"); | |
| 1580 JvmtiVMObjectAllocEventCollector oam; | |
| 1581 | |
| 1582 // Exclude primitive types and array types | |
| 1583 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 1584 Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { | |
| 1585 // Return empty array | |
| 1142 | 1586 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
| 0 | 1587 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1588 } | |
| 1589 | |
| 1590 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
| 1591 constantPoolHandle cp(THREAD, k->constants()); | |
| 1592 | |
| 1593 // Ensure class is linked | |
| 1594 k->link_class(CHECK_NULL); | |
| 1595 | |
| 1596 typeArrayHandle fields(THREAD, k->fields()); | |
| 1597 int fields_len = fields->length(); | |
| 1598 | |
| 1599 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
| 1600 bool skip_backtrace = false; | |
| 1601 | |
| 1602 // Allocate result | |
| 1603 int num_fields; | |
| 1604 | |
| 1605 if (publicOnly) { | |
| 1606 num_fields = 0; | |
| 1607 for (int i = 0, j = 0; i < fields_len; i += instanceKlass::next_offset, j++) { | |
| 1608 int mods = fields->ushort_at(i + instanceKlass::access_flags_offset) & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
| 1609 if (mods & JVM_ACC_PUBLIC) ++num_fields; | |
| 1610 } | |
| 1611 } else { | |
| 1612 num_fields = fields_len / instanceKlass::next_offset; | |
| 1613 | |
| 1142 | 1614 if (k() == SystemDictionary::Throwable_klass()) { |
| 0 | 1615 num_fields--; |
| 1616 skip_backtrace = true; | |
| 1617 } | |
| 1618 } | |
| 1619 | |
| 1142 | 1620 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
| 0 | 1621 objArrayHandle result (THREAD, r); |
| 1622 | |
| 1623 int out_idx = 0; | |
| 1624 fieldDescriptor fd; | |
| 1625 for (int i = 0; i < fields_len; i += instanceKlass::next_offset) { | |
| 1626 if (skip_backtrace) { | |
| 1627 // 4496456 skip java.lang.Throwable.backtrace | |
| 1628 int offset = k->offset_from_fields(i); | |
| 1629 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; | |
| 1630 } | |
| 1631 | |
| 1632 int mods = fields->ushort_at(i + instanceKlass::access_flags_offset) & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
| 1633 if (!publicOnly || (mods & JVM_ACC_PUBLIC)) { | |
| 1634 fd.initialize(k(), i); | |
| 1635 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); | |
| 1636 result->obj_at_put(out_idx, field); | |
| 1637 ++out_idx; | |
| 1638 } | |
| 1639 } | |
| 1640 assert(out_idx == num_fields, "just checking"); | |
| 1641 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1642 } | |
| 1643 JVM_END | |
| 1644 | |
| 1645 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1646 { | |
| 1647 JVMWrapper("JVM_GetClassDeclaredMethods"); | |
| 1648 JvmtiVMObjectAllocEventCollector oam; | |
| 1649 | |
| 1650 // Exclude primitive types and array types | |
| 1651 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
| 1652 || Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { | |
| 1653 // Return empty array | |
| 1142 | 1654 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), 0, CHECK_NULL); |
| 0 | 1655 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1656 } | |
| 1657 | |
| 1658 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
| 1659 | |
| 1660 // Ensure class is linked | |
| 1661 k->link_class(CHECK_NULL); | |
| 1662 | |
| 1663 objArrayHandle methods (THREAD, k->methods()); | |
| 1664 int methods_length = methods->length(); | |
| 1665 int num_methods = 0; | |
| 1666 | |
| 1667 int i; | |
| 1668 for (i = 0; i < methods_length; i++) { | |
| 1669 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
| 1670 if (!method->is_initializer()) { | |
| 1671 if (!publicOnly || method->is_public()) { | |
| 1672 ++num_methods; | |
| 1673 } | |
| 1674 } | |
| 1675 } | |
| 1676 | |
| 1677 // Allocate result | |
| 1142 | 1678 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), num_methods, CHECK_NULL); |
| 0 | 1679 objArrayHandle result (THREAD, r); |
| 1680 | |
| 1681 int out_idx = 0; | |
| 1682 for (i = 0; i < methods_length; i++) { | |
| 1683 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
| 1684 if (!method->is_initializer()) { | |
| 1685 if (!publicOnly || method->is_public()) { | |
| 1686 oop m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); | |
| 1687 result->obj_at_put(out_idx, m); | |
| 1688 ++out_idx; | |
| 1689 } | |
| 1690 } | |
| 1691 } | |
| 1692 assert(out_idx == num_methods, "just checking"); | |
| 1693 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1694 } | |
| 1695 JVM_END | |
| 1696 | |
| 1697 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1698 { | |
| 1699 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
| 1700 JvmtiVMObjectAllocEventCollector oam; | |
| 1701 | |
| 1702 // Exclude primitive types and array types | |
| 1703 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
| 1704 || Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { | |
| 1705 // Return empty array | |
| 1142 | 1706 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), 0 , CHECK_NULL); |
| 0 | 1707 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1708 } | |
| 1709 | |
| 1710 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
| 1711 | |
| 1712 // Ensure class is linked | |
| 1713 k->link_class(CHECK_NULL); | |
| 1714 | |
| 1715 objArrayHandle methods (THREAD, k->methods()); | |
| 1716 int methods_length = methods->length(); | |
| 1717 int num_constructors = 0; | |
| 1718 | |
| 1719 int i; | |
| 1720 for (i = 0; i < methods_length; i++) { | |
| 1721 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
| 1722 if (method->is_initializer() && !method->is_static()) { | |
| 1723 if (!publicOnly || method->is_public()) { | |
| 1724 ++num_constructors; | |
| 1725 } | |
| 1726 } | |
| 1727 } | |
| 1728 | |
| 1729 // Allocate result | |
| 1142 | 1730 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), num_constructors, CHECK_NULL); |
| 0 | 1731 objArrayHandle result(THREAD, r); |
| 1732 | |
| 1733 int out_idx = 0; | |
| 1734 for (i = 0; i < methods_length; i++) { | |
| 1735 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
| 1736 if (method->is_initializer() && !method->is_static()) { | |
| 1737 if (!publicOnly || method->is_public()) { | |
| 1738 oop m = Reflection::new_constructor(method, CHECK_NULL); | |
| 1739 result->obj_at_put(out_idx, m); | |
| 1740 ++out_idx; | |
| 1741 } | |
| 1742 } | |
| 1743 } | |
| 1744 assert(out_idx == num_constructors, "just checking"); | |
| 1745 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1746 } | |
| 1747 JVM_END | |
| 1748 | |
| 1749 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
| 1750 { | |
| 1751 JVMWrapper("JVM_GetClassAccessFlags"); | |
| 1752 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1753 // Primitive type | |
| 1754 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 1755 } | |
| 1756 | |
| 1757 Klass* k = Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls))); | |
| 1758 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; | |
| 1759 } | |
| 1760 JVM_END | |
| 1761 | |
| 1762 | |
| 1763 // Constant pool access ////////////////////////////////////////////////////////// | |
| 1764 | |
| 1765 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
| 1766 { | |
| 1767 JVMWrapper("JVM_GetClassConstantPool"); | |
| 1768 JvmtiVMObjectAllocEventCollector oam; | |
| 1769 | |
| 1770 // Return null for primitives and arrays | |
| 1771 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1772 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 1773 if (Klass::cast(k)->oop_is_instance()) { | |
| 1774 instanceKlassHandle k_h(THREAD, k); | |
| 1775 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
| 1776 sun_reflect_ConstantPool::set_cp_oop(jcp(), k_h->constants()); | |
| 1777 return JNIHandles::make_local(jcp()); | |
| 1778 } | |
| 1779 } | |
| 1780 return NULL; | |
| 1781 } | |
| 1782 JVM_END | |
| 1783 | |
| 1784 | |
| 1785 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject unused, jobject jcpool)) | |
| 1786 { | |
| 1787 JVMWrapper("JVM_ConstantPoolGetSize"); | |
| 1788 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1789 return cp->length(); | |
| 1790 } | |
| 1791 JVM_END | |
| 1792 | |
| 1793 | |
| 1794 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { | |
| 1795 if (!cp->is_within_bounds(index)) { | |
| 1796 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); | |
| 1797 } | |
| 1798 } | |
| 1799 | |
| 1800 | |
| 1801 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1802 { | |
| 1803 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
| 1804 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1805 bounds_check(cp, index, CHECK_NULL); | |
| 1806 constantTag tag = cp->tag_at(index); | |
| 1807 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 1808 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1809 } | |
| 1810 klassOop k = cp->klass_at(index, CHECK_NULL); | |
| 1811 return (jclass) JNIHandles::make_local(k->klass_part()->java_mirror()); | |
| 1812 } | |
| 1813 JVM_END | |
| 1814 | |
| 1815 | |
| 1816 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1817 { | |
| 1818 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
| 1819 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1820 bounds_check(cp, index, CHECK_NULL); | |
| 1821 constantTag tag = cp->tag_at(index); | |
| 1822 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 1823 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1824 } | |
| 1825 klassOop k = constantPoolOopDesc::klass_at_if_loaded(cp, index); | |
| 1826 if (k == NULL) return NULL; | |
| 1827 return (jclass) JNIHandles::make_local(k->klass_part()->java_mirror()); | |
| 1828 } | |
| 1829 JVM_END | |
| 1830 | |
| 1831 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 1832 constantTag tag = cp->tag_at(index); | |
| 1833 if (!tag.is_method() && !tag.is_interface_method()) { | |
| 1834 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1835 } | |
| 1836 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
| 1837 klassOop k_o; | |
| 1838 if (force_resolution) { | |
| 1839 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 1840 } else { | |
| 1841 k_o = constantPoolOopDesc::klass_at_if_loaded(cp, klass_ref); | |
| 1842 if (k_o == NULL) return NULL; | |
| 1843 } | |
| 1844 instanceKlassHandle k(THREAD, k_o); | |
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1845 Symbol* name = cp->uncached_name_ref_at(index); |
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1846 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 1847 methodHandle m (THREAD, k->find_method(name, sig)); |
| 1848 if (m.is_null()) { | |
| 1849 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
| 1850 } | |
| 1851 oop method; | |
| 1852 if (!m->is_initializer() || m->is_static()) { | |
| 1853 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
| 1854 } else { | |
| 1855 method = Reflection::new_constructor(m, CHECK_NULL); | |
| 1856 } | |
| 1857 return JNIHandles::make_local(method); | |
| 1858 } | |
| 1859 | |
| 1860 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1861 { | |
| 1862 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
| 1863 JvmtiVMObjectAllocEventCollector oam; | |
| 1864 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1865 bounds_check(cp, index, CHECK_NULL); | |
| 1866 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
| 1867 return res; | |
| 1868 } | |
| 1869 JVM_END | |
| 1870 | |
| 1871 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1872 { | |
| 1873 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
| 1874 JvmtiVMObjectAllocEventCollector oam; | |
| 1875 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1876 bounds_check(cp, index, CHECK_NULL); | |
| 1877 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
| 1878 return res; | |
| 1879 } | |
| 1880 JVM_END | |
| 1881 | |
| 1882 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 1883 constantTag tag = cp->tag_at(index); | |
| 1884 if (!tag.is_field()) { | |
| 1885 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1886 } | |
| 1887 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
| 1888 klassOop k_o; | |
| 1889 if (force_resolution) { | |
| 1890 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 1891 } else { | |
| 1892 k_o = constantPoolOopDesc::klass_at_if_loaded(cp, klass_ref); | |
| 1893 if (k_o == NULL) return NULL; | |
| 1894 } | |
| 1895 instanceKlassHandle k(THREAD, k_o); | |
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1896 Symbol* name = cp->uncached_name_ref_at(index); |
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1897 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 1898 fieldDescriptor fd; |
| 1899 klassOop target_klass = k->find_field(name, sig, &fd); | |
| 1900 if (target_klass == NULL) { | |
| 1901 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
| 1902 } | |
| 1903 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
| 1904 return JNIHandles::make_local(field); | |
| 1905 } | |
| 1906 | |
| 1907 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1908 { | |
| 1909 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
| 1910 JvmtiVMObjectAllocEventCollector oam; | |
| 1911 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1912 bounds_check(cp, index, CHECK_NULL); | |
| 1913 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
| 1914 return res; | |
| 1915 } | |
| 1916 JVM_END | |
| 1917 | |
| 1918 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1919 { | |
| 1920 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
| 1921 JvmtiVMObjectAllocEventCollector oam; | |
| 1922 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1923 bounds_check(cp, index, CHECK_NULL); | |
| 1924 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
| 1925 return res; | |
| 1926 } | |
| 1927 JVM_END | |
| 1928 | |
| 1929 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1930 { | |
| 1931 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
| 1932 JvmtiVMObjectAllocEventCollector oam; | |
| 1933 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1934 bounds_check(cp, index, CHECK_NULL); | |
| 1935 constantTag tag = cp->tag_at(index); | |
| 1936 if (!tag.is_field_or_method()) { | |
| 1937 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1938 } | |
| 1939 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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1940 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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1941 Symbol* member_name = cp->uncached_name_ref_at(index); |
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1942 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
| 1142 | 1943 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
| 0 | 1944 objArrayHandle dest(THREAD, dest_o); |
| 1945 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
| 1946 dest->obj_at_put(0, str()); | |
| 1947 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
| 1948 dest->obj_at_put(1, str()); | |
| 1949 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
| 1950 dest->obj_at_put(2, str()); | |
| 1951 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 1952 } | |
| 1953 JVM_END | |
| 1954 | |
| 1955 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1956 { | |
| 1957 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
| 1958 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1959 bounds_check(cp, index, CHECK_0); | |
| 1960 constantTag tag = cp->tag_at(index); | |
| 1961 if (!tag.is_int()) { | |
| 1962 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1963 } | |
| 1964 return cp->int_at(index); | |
| 1965 } | |
| 1966 JVM_END | |
| 1967 | |
| 1968 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1969 { | |
| 1970 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
| 1971 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1972 bounds_check(cp, index, CHECK_(0L)); | |
| 1973 constantTag tag = cp->tag_at(index); | |
| 1974 if (!tag.is_long()) { | |
| 1975 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1976 } | |
| 1977 return cp->long_at(index); | |
| 1978 } | |
| 1979 JVM_END | |
| 1980 | |
| 1981 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1982 { | |
| 1983 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
| 1984 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1985 bounds_check(cp, index, CHECK_(0.0f)); | |
| 1986 constantTag tag = cp->tag_at(index); | |
| 1987 if (!tag.is_float()) { | |
| 1988 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1989 } | |
| 1990 return cp->float_at(index); | |
| 1991 } | |
| 1992 JVM_END | |
| 1993 | |
| 1994 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1995 { | |
| 1996 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
| 1997 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1998 bounds_check(cp, index, CHECK_(0.0)); | |
| 1999 constantTag tag = cp->tag_at(index); | |
| 2000 if (!tag.is_double()) { | |
| 2001 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2002 } | |
| 2003 return cp->double_at(index); | |
| 2004 } | |
| 2005 JVM_END | |
| 2006 | |
| 2007 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 2008 { | |
| 2009 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
| 2010 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 2011 bounds_check(cp, index, CHECK_NULL); | |
| 2012 constantTag tag = cp->tag_at(index); | |
| 2013 if (!tag.is_string() && !tag.is_unresolved_string()) { | |
| 2014 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2015 } | |
| 2016 oop str = cp->string_at(index, CHECK_NULL); | |
| 2017 return (jstring) JNIHandles::make_local(str); | |
| 2018 } | |
| 2019 JVM_END | |
| 2020 | |
| 2021 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 2022 { | |
| 2023 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
| 2024 JvmtiVMObjectAllocEventCollector oam; | |
| 2025 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 2026 bounds_check(cp, index, CHECK_NULL); | |
| 2027 constantTag tag = cp->tag_at(index); | |
| 2028 if (!tag.is_symbol()) { | |
| 2029 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2030 } | |
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2031 Symbol* sym = cp->symbol_at(index); |
| 0 | 2032 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 2033 return (jstring) JNIHandles::make_local(str()); | |
| 2034 } | |
| 2035 JVM_END | |
| 2036 | |
| 2037 | |
| 2038 // Assertion support. ////////////////////////////////////////////////////////// | |
| 2039 | |
| 2040 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
| 2041 JVMWrapper("JVM_DesiredAssertionStatus"); | |
| 2042 assert(cls != NULL, "bad class"); | |
| 2043 | |
| 2044 oop r = JNIHandles::resolve(cls); | |
| 2045 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
| 2046 if (java_lang_Class::is_primitive(r)) return false; | |
| 2047 | |
| 2048 klassOop k = java_lang_Class::as_klassOop(r); | |
| 2049 assert(Klass::cast(k)->oop_is_instance(), "must be an instance klass"); | |
| 2050 if (! Klass::cast(k)->oop_is_instance()) return false; | |
| 2051 | |
| 2052 ResourceMark rm(THREAD); | |
| 2053 const char* name = Klass::cast(k)->name()->as_C_string(); | |
| 2054 bool system_class = Klass::cast(k)->class_loader() == NULL; | |
| 2055 return JavaAssertions::enabled(name, system_class); | |
| 2056 | |
| 2057 JVM_END | |
| 2058 | |
| 2059 | |
| 2060 // Return a new AssertionStatusDirectives object with the fields filled in with | |
| 2061 // command-line assertion arguments (i.e., -ea, -da). | |
| 2062 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
| 2063 JVMWrapper("JVM_AssertionStatusDirectives"); | |
| 2064 JvmtiVMObjectAllocEventCollector oam; | |
| 2065 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
| 2066 return JNIHandles::make_local(env, asd); | |
| 2067 JVM_END | |
| 2068 | |
| 2069 // Verification //////////////////////////////////////////////////////////////////////////////// | |
| 2070 | |
| 2071 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
| 2072 | |
| 2073 // RedefineClasses support: bug 6214132 caused verification to fail. | |
| 2074 // All functions from this section should call the jvmtiThreadSate function: | |
| 2075 // klassOop class_to_verify_considering_redefinition(klassOop klass). | |
| 2076 // The function returns a klassOop of the _scratch_class if the verifier | |
| 2077 // was invoked in the middle of the class redefinition. | |
| 2078 // Otherwise it returns its argument value which is the _the_class klassOop. | |
| 2079 // Please, refer to the description in the jvmtiThreadSate.hpp. | |
| 2080 | |
| 2081 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
| 2082 JVMWrapper("JVM_GetClassNameUTF"); | |
| 2083 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2084 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2085 return Klass::cast(k)->name()->as_utf8(); | |
| 2086 JVM_END | |
| 2087 | |
| 2088 | |
| 2089 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
| 2090 JVMWrapper("JVM_GetClassCPTypes"); | |
| 2091 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2092 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2093 // types will have length zero if this is not an instanceKlass | |
| 2094 // (length is determined by call to JVM_GetClassCPEntriesCount) | |
| 2095 if (Klass::cast(k)->oop_is_instance()) { | |
| 2096 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2097 for (int index = cp->length() - 1; index >= 0; index--) { | |
| 2098 constantTag tag = cp->tag_at(index); | |
| 2099 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : | |
| 2100 (tag.is_unresolved_string()) ? JVM_CONSTANT_String : tag.value(); | |
| 2101 } | |
| 2102 } | |
| 2103 JVM_END | |
| 2104 | |
| 2105 | |
| 2106 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
| 2107 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
| 2108 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2109 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2110 if (!Klass::cast(k)->oop_is_instance()) | |
| 2111 return 0; | |
| 2112 return instanceKlass::cast(k)->constants()->length(); | |
| 2113 JVM_END | |
| 2114 | |
| 2115 | |
| 2116 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
| 2117 JVMWrapper("JVM_GetClassFieldsCount"); | |
| 2118 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2119 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2120 if (!Klass::cast(k)->oop_is_instance()) | |
| 2121 return 0; | |
| 2122 return instanceKlass::cast(k)->fields()->length() / instanceKlass::next_offset; | |
| 2123 JVM_END | |
| 2124 | |
| 2125 | |
| 2126 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
| 2127 JVMWrapper("JVM_GetClassMethodsCount"); | |
| 2128 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2129 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2130 if (!Klass::cast(k)->oop_is_instance()) | |
| 2131 return 0; | |
| 2132 return instanceKlass::cast(k)->methods()->length(); | |
| 2133 JVM_END | |
| 2134 | |
| 2135 | |
| 2136 // The following methods, used for the verifier, are never called with | |
| 2137 // array klasses, so a direct cast to instanceKlass is safe. | |
| 2138 // Typically, these methods are called in a loop with bounds determined | |
| 2139 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
| 2140 // zero for arrays. | |
| 2141 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
| 2142 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
| 2143 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2144 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2145 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2146 int length = methodOop(method)->checked_exceptions_length(); | |
| 2147 if (length > 0) { | |
| 2148 CheckedExceptionElement* table= methodOop(method)->checked_exceptions_start(); | |
| 2149 for (int i = 0; i < length; i++) { | |
| 2150 exceptions[i] = table[i].class_cp_index; | |
| 2151 } | |
| 2152 } | |
| 2153 JVM_END | |
| 2154 | |
| 2155 | |
| 2156 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
| 2157 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
| 2158 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2159 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2160 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2161 return methodOop(method)->checked_exceptions_length(); | |
| 2162 JVM_END | |
| 2163 | |
| 2164 | |
| 2165 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
| 2166 JVMWrapper("JVM_GetMethodIxByteCode"); | |
| 2167 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2168 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2169 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2170 memcpy(code, methodOop(method)->code_base(), methodOop(method)->code_size()); | |
| 2171 JVM_END | |
| 2172 | |
| 2173 | |
| 2174 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
| 2175 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
| 2176 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2177 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2178 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2179 return methodOop(method)->code_size(); | |
| 2180 JVM_END | |
| 2181 | |
| 2182 | |
| 2183 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
| 2184 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
| 2185 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2186 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2187 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2188 typeArrayOop extable = methodOop(method)->exception_table(); | |
| 2189 entry->start_pc = extable->int_at(entry_index * 4); | |
| 2190 entry->end_pc = extable->int_at(entry_index * 4 + 1); | |
| 2191 entry->handler_pc = extable->int_at(entry_index * 4 + 2); | |
| 2192 entry->catchType = extable->int_at(entry_index * 4 + 3); | |
| 2193 JVM_END | |
| 2194 | |
| 2195 | |
| 2196 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
| 2197 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
| 2198 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2199 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2200 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2201 return methodOop(method)->exception_table()->length() / 4; | |
| 2202 JVM_END | |
| 2203 | |
| 2204 | |
| 2205 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
| 2206 JVMWrapper("JVM_GetMethodIxModifiers"); | |
| 2207 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2208 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2209 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2210 return methodOop(method)->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 2211 JVM_END | |
| 2212 | |
| 2213 | |
| 2214 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
| 2215 JVMWrapper("JVM_GetFieldIxModifiers"); | |
| 2216 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2217 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2218 typeArrayOop fields = instanceKlass::cast(k)->fields(); | |
| 2219 return fields->ushort_at(field_index * instanceKlass::next_offset + instanceKlass::access_flags_offset) & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
| 2220 JVM_END | |
| 2221 | |
| 2222 | |
| 2223 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
| 2224 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
| 2225 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2226 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2227 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2228 return methodOop(method)->max_locals(); | |
| 2229 JVM_END | |
| 2230 | |
| 2231 | |
| 2232 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
| 2233 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
| 2234 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2235 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2236 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2237 return methodOop(method)->size_of_parameters(); | |
| 2238 JVM_END | |
| 2239 | |
| 2240 | |
| 2241 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
| 2242 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
| 2243 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2244 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2245 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2246 return methodOop(method)->max_stack(); | |
| 2247 JVM_END | |
| 2248 | |
| 2249 | |
| 2250 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
| 2251 JVMWrapper("JVM_IsConstructorIx"); | |
| 2252 ResourceMark rm(THREAD); | |
| 2253 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2254 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2255 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2256 return methodOop(method)->name() == vmSymbols::object_initializer_name(); | |
| 2257 JVM_END | |
| 2258 | |
| 2259 | |
| 2260 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) | |
| 2261 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
| 2262 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2263 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2264 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2265 return methodOop(method)->name()->as_utf8(); | |
| 2266 JVM_END | |
| 2267 | |
| 2268 | |
| 2269 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
| 2270 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
| 2271 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2272 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2273 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2274 return methodOop(method)->signature()->as_utf8(); | |
| 2275 JVM_END | |
| 2276 | |
| 2277 /** | |
| 2278 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
| 2279 * read entries in the constant pool. Since the old verifier always | |
| 2280 * works on a copy of the code, it will not see any rewriting that | |
| 2281 * may possibly occur in the middle of verification. So it is important | |
| 2282 * that nothing it calls tries to use the cpCache instead of the raw | |
| 2283 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
| 2284 */ | |
| 2285 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2286 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
| 2287 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2288 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2289 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2290 switch (cp->tag_at(cp_index).value()) { | |
| 2291 case JVM_CONSTANT_Fieldref: | |
| 2292 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
| 2293 default: | |
| 2294 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
| 2295 } | |
| 2296 ShouldNotReachHere(); | |
| 2297 return NULL; | |
| 2298 JVM_END | |
| 2299 | |
| 2300 | |
| 2301 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2302 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
| 2303 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2304 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2305 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2306 switch (cp->tag_at(cp_index).value()) { | |
| 2307 case JVM_CONSTANT_InterfaceMethodref: | |
| 2308 case JVM_CONSTANT_Methodref: | |
|
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|
2309 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2310 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
| 2311 default: | |
| 2312 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
| 2313 } | |
| 2314 ShouldNotReachHere(); | |
| 2315 return NULL; | |
| 2316 JVM_END | |
| 2317 | |
| 2318 | |
| 2319 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2320 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
| 2321 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2322 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2323 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2324 switch (cp->tag_at(cp_index).value()) { | |
| 2325 case JVM_CONSTANT_InterfaceMethodref: | |
| 2326 case JVM_CONSTANT_Methodref: | |
|
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|
2327 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2328 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
| 2329 default: | |
| 2330 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
| 2331 } | |
| 2332 ShouldNotReachHere(); | |
| 2333 return NULL; | |
| 2334 JVM_END | |
| 2335 | |
| 2336 | |
| 2337 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2338 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
| 2339 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2340 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2341 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2342 switch (cp->tag_at(cp_index).value()) { | |
| 2343 case JVM_CONSTANT_Fieldref: | |
| 2344 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
| 2345 default: | |
| 2346 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
| 2347 } | |
| 2348 ShouldNotReachHere(); | |
| 2349 return NULL; | |
| 2350 JVM_END | |
| 2351 | |
| 2352 | |
| 2353 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2354 JVMWrapper("JVM_GetCPClassNameUTF"); | |
| 2355 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2356 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2357 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
|
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|
2358 Symbol* classname = cp->klass_name_at(cp_index); |
| 0 | 2359 return classname->as_utf8(); |
| 2360 JVM_END | |
| 2361 | |
| 2362 | |
| 2363 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2364 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
| 2365 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2366 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2367 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2368 switch (cp->tag_at(cp_index).value()) { | |
| 2369 case JVM_CONSTANT_Fieldref: { | |
| 2370 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
|
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|
2371 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2372 return classname->as_utf8(); |
| 2373 } | |
| 2374 default: | |
| 2375 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
| 2376 } | |
| 2377 ShouldNotReachHere(); | |
| 2378 return NULL; | |
| 2379 JVM_END | |
| 2380 | |
| 2381 | |
| 2382 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2383 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
| 2384 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2385 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2386 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2387 switch (cp->tag_at(cp_index).value()) { | |
| 2388 case JVM_CONSTANT_Methodref: | |
| 2389 case JVM_CONSTANT_InterfaceMethodref: { | |
| 2390 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
|
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|
2391 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2392 return classname->as_utf8(); |
| 2393 } | |
| 2394 default: | |
| 2395 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
| 2396 } | |
| 2397 ShouldNotReachHere(); | |
| 2398 return NULL; | |
| 2399 JVM_END | |
| 2400 | |
| 2401 | |
| 2402 JVM_QUICK_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
| 2403 JVMWrapper("JVM_GetCPFieldModifiers"); | |
| 2404 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2405 klassOop k_called = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(called_cls)); | |
| 2406 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2407 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
| 2408 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2409 constantPoolOop cp_called = instanceKlass::cast(k_called)->constants(); | |
| 2410 switch (cp->tag_at(cp_index).value()) { | |
| 2411 case JVM_CONSTANT_Fieldref: { | |
|
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2162
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|
2412 Symbol* name = cp->uncached_name_ref_at(cp_index); |
|
3582bf76420e
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2162
diff
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|
2413 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
| 0 | 2414 typeArrayOop fields = instanceKlass::cast(k_called)->fields(); |
| 2415 int fields_count = fields->length(); | |
| 2416 for (int i = 0; i < fields_count; i += instanceKlass::next_offset) { | |
| 2417 if (cp_called->symbol_at(fields->ushort_at(i + instanceKlass::name_index_offset)) == name && | |
| 2418 cp_called->symbol_at(fields->ushort_at(i + instanceKlass::signature_index_offset)) == signature) { | |
| 2419 return fields->ushort_at(i + instanceKlass::access_flags_offset) & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
| 2420 } | |
| 2421 } | |
| 2422 return -1; | |
| 2423 } | |
| 2424 default: | |
| 2425 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
| 2426 } | |
| 2427 ShouldNotReachHere(); | |
| 2428 return 0; | |
| 2429 JVM_END | |
| 2430 | |
| 2431 | |
| 2432 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
| 2433 JVMWrapper("JVM_GetCPMethodModifiers"); | |
| 2434 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2435 klassOop k_called = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(called_cls)); | |
| 2436 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2437 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
| 2438 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2439 switch (cp->tag_at(cp_index).value()) { | |
| 2440 case JVM_CONSTANT_Methodref: | |
| 2441 case JVM_CONSTANT_InterfaceMethodref: { | |
|
2177
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2162
diff
changeset
|
2442 Symbol* name = cp->uncached_name_ref_at(cp_index); |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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2162
diff
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|
2443 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
| 0 | 2444 objArrayOop methods = instanceKlass::cast(k_called)->methods(); |
| 2445 int methods_count = methods->length(); | |
| 2446 for (int i = 0; i < methods_count; i++) { | |
| 2447 methodOop method = methodOop(methods->obj_at(i)); | |
| 2448 if (method->name() == name && method->signature() == signature) { | |
| 2449 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 2450 } | |
| 2451 } | |
| 2452 return -1; | |
| 2453 } | |
| 2454 default: | |
| 2455 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
| 2456 } | |
| 2457 ShouldNotReachHere(); | |
| 2458 return 0; | |
| 2459 JVM_END | |
| 2460 | |
| 2461 | |
| 2462 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
| 2463 | |
| 2464 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
| 2465 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
| 2466 JVM_END | |
| 2467 | |
| 2468 | |
| 2469 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
| 2470 JVMWrapper("JVM_IsSameClassPackage"); | |
| 2471 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
| 2472 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
| 2473 klassOop klass1 = java_lang_Class::as_klassOop(class1_mirror); | |
| 2474 klassOop klass2 = java_lang_Class::as_klassOop(class2_mirror); | |
| 2475 return (jboolean) Reflection::is_same_class_package(klass1, klass2); | |
| 2476 JVM_END | |
| 2477 | |
| 2478 | |
| 2479 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
| 2480 | |
| 2481 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
| 2482 JVMWrapper2("JVM_Open (%s)", fname); | |
| 2483 | |
| 2484 //%note jvm_r6 | |
|
1980
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diff
changeset
|
2485 int result = os::open(fname, flags, mode); |
| 0 | 2486 if (result >= 0) { |
| 2487 return result; | |
| 2488 } else { | |
| 2489 switch(errno) { | |
| 2490 case EEXIST: | |
| 2491 return JVM_EEXIST; | |
| 2492 default: | |
| 2493 return -1; | |
| 2494 } | |
| 2495 } | |
| 2496 JVM_END | |
| 2497 | |
| 2498 | |
| 2499 JVM_LEAF(jint, JVM_Close(jint fd)) | |
| 2500 JVMWrapper2("JVM_Close (0x%x)", fd); | |
| 2501 //%note jvm_r6 | |
|
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diff
changeset
|
2502 return os::close(fd); |
| 0 | 2503 JVM_END |
| 2504 | |
| 2505 | |
| 2506 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
| 2507 JVMWrapper2("JVM_Read (0x%x)", fd); | |
| 2508 | |
| 2509 //%note jvm_r6 | |
|
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6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
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|
2510 return (jint)os::restartable_read(fd, buf, nbytes); |
| 0 | 2511 JVM_END |
| 2512 | |
| 2513 | |
| 2514 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
| 2515 JVMWrapper2("JVM_Write (0x%x)", fd); | |
| 2516 | |
| 2517 //%note jvm_r6 | |
|
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828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2518 return (jint)os::write(fd, buf, nbytes); |
| 0 | 2519 JVM_END |
| 2520 | |
| 2521 | |
| 2522 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
| 2523 JVMWrapper2("JVM_Available (0x%x)", fd); | |
| 2524 //%note jvm_r6 | |
|
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828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
2525 return os::available(fd, pbytes); |
| 0 | 2526 JVM_END |
| 2527 | |
| 2528 | |
| 2529 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
| 2530 JVMWrapper4("JVM_Lseek (0x%x, %Ld, %d)", fd, offset, whence); | |
| 2531 //%note jvm_r6 | |
|
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828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2532 return os::lseek(fd, offset, whence); |
| 0 | 2533 JVM_END |
| 2534 | |
| 2535 | |
| 2536 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
| 2537 JVMWrapper3("JVM_SetLength (0x%x, %Ld)", fd, length); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2538 return os::ftruncate(fd, length); |
| 0 | 2539 JVM_END |
| 2540 | |
| 2541 | |
| 2542 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
| 2543 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
| 2544 //%note jvm_r6 | |
|
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828eafbd85cc
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ikrylov
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1972
diff
changeset
|
2545 return os::fsync(fd); |
| 0 | 2546 JVM_END |
| 2547 | |
| 2548 | |
| 2549 // Printing support ////////////////////////////////////////////////// | |
| 2550 extern "C" { | |
| 2551 | |
| 2552 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { | |
| 2553 // see bug 4399518, 4417214 | |
| 2554 if ((intptr_t)count <= 0) return -1; | |
| 2555 return vsnprintf(str, count, fmt, args); | |
| 2556 } | |
| 2557 | |
| 2558 | |
| 2559 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { | |
| 2560 va_list args; | |
| 2561 int len; | |
| 2562 va_start(args, fmt); | |
| 2563 len = jio_vsnprintf(str, count, fmt, args); | |
| 2564 va_end(args); | |
| 2565 return len; | |
| 2566 } | |
| 2567 | |
| 2568 | |
| 2569 int jio_fprintf(FILE* f, const char *fmt, ...) { | |
| 2570 int len; | |
| 2571 va_list args; | |
| 2572 va_start(args, fmt); | |
| 2573 len = jio_vfprintf(f, fmt, args); | |
| 2574 va_end(args); | |
| 2575 return len; | |
| 2576 } | |
| 2577 | |
| 2578 | |
| 2579 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { | |
| 2580 if (Arguments::vfprintf_hook() != NULL) { | |
| 2581 return Arguments::vfprintf_hook()(f, fmt, args); | |
| 2582 } else { | |
| 2583 return vfprintf(f, fmt, args); | |
| 2584 } | |
| 2585 } | |
| 2586 | |
| 2587 | |
| 2588 int jio_printf(const char *fmt, ...) { | |
| 2589 int len; | |
| 2590 va_list args; | |
| 2591 va_start(args, fmt); | |
| 2592 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
| 2593 va_end(args); | |
| 2594 return len; | |
| 2595 } | |
| 2596 | |
| 2597 | |
| 2598 // HotSpot specific jio method | |
| 2599 void jio_print(const char* s) { | |
| 2600 // Try to make this function as atomic as possible. | |
| 2601 if (Arguments::vfprintf_hook() != NULL) { | |
| 2602 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
| 2603 } else { | |
|
513
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6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
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431
diff
changeset
|
2604 // 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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431
diff
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|
2605 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
| 0 | 2606 } |
| 2607 } | |
| 2608 | |
| 2609 } // Extern C | |
| 2610 | |
| 2611 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
| 2612 | |
| 2613 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
| 2614 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
| 2615 // OSThread objects. The exception to this rule is when the target object is the thread | |
| 2616 // doing the operation, in which case we know that the thread won't exit until the | |
| 2617 // operation is done (all exits being voluntary). There are a few cases where it is | |
| 2618 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
| 2619 // you are alive. While these can still happen, they are not subject to deadlocks if | |
| 2620 // the lock is held while the operation occurs (this is not the case for suspend, for | |
| 2621 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
| 2622 // implementation is local to this file, we always lock Threads_lock for that one. | |
| 2623 | |
| 2624 static void thread_entry(JavaThread* thread, TRAPS) { | |
| 2625 HandleMark hm(THREAD); | |
| 2626 Handle obj(THREAD, thread->threadObj()); | |
| 2627 JavaValue result(T_VOID); | |
| 2628 JavaCalls::call_virtual(&result, | |
| 2629 obj, | |
| 1142 | 2630 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
|
2177
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6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2162
diff
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|
2631 vmSymbols::run_method_name(), |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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2162
diff
changeset
|
2632 vmSymbols::void_method_signature(), |
| 0 | 2633 THREAD); |
| 2634 } | |
| 2635 | |
| 2636 | |
| 2637 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
| 2638 JVMWrapper("JVM_StartThread"); | |
| 2639 JavaThread *native_thread = NULL; | |
| 2640 | |
| 2641 // We cannot hold the Threads_lock when we throw an exception, | |
| 2642 // due to rank ordering issues. Example: we might need to grab the | |
| 2643 // Heap_lock while we construct the exception. | |
| 2644 bool throw_illegal_thread_state = false; | |
| 2645 | |
| 2646 // We must release the Threads_lock before we can post a jvmti event | |
| 2647 // in Thread::start. | |
| 2648 { | |
| 2649 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
| 2650 // we operate. | |
| 2651 MutexLocker mu(Threads_lock); | |
| 2652 | |
|
2162
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diff
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|
2653 // Since JDK 5 the java.lang.Thread threadStatus is used to prevent |
|
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1980
diff
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|
2654 // re-starting an already started thread, so we should usually find |
|
ccfcb502af3f
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diff
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|
2655 // that the JavaThread is null. However for a JNI attached thread |
|
ccfcb502af3f
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diff
changeset
|
2656 // there is a small window between the Thread object being created |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2657 // (with its JavaThread set) and the update to its threadStatus, so we |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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1980
diff
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|
2658 // have to check for this |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
changeset
|
2659 if (java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)) != NULL) { |
|
ccfcb502af3f
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1980
diff
changeset
|
2660 throw_illegal_thread_state = true; |
| 0 | 2661 } else { |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2662 // We could also check the stillborn flag to see if this thread was already stopped, but |
|
ccfcb502af3f
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diff
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|
2663 // for historical reasons we let the thread detect that itself when it starts running |
|
ccfcb502af3f
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diff
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|
2664 |
| 0 | 2665 jlong size = |
| 2666 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
| 2667 // Allocate the C++ Thread structure and create the native thread. The | |
| 2668 // stack size retrieved from java is signed, but the constructor takes | |
| 2669 // size_t (an unsigned type), so avoid passing negative values which would | |
| 2670 // result in really large stacks. | |
| 2671 size_t sz = size > 0 ? (size_t) size : 0; | |
| 2672 native_thread = new JavaThread(&thread_entry, sz); | |
| 2673 | |
| 2674 // At this point it may be possible that no osthread was created for the | |
| 2675 // JavaThread due to lack of memory. Check for this situation and throw | |
| 2676 // an exception if necessary. Eventually we may want to change this so | |
| 2677 // that we only grab the lock if the thread was created successfully - | |
| 2678 // then we can also do this check and throw the exception in the | |
| 2679 // JavaThread constructor. | |
| 2680 if (native_thread->osthread() != NULL) { | |
| 2681 // Note: the current thread is not being used within "prepare". | |
| 2682 native_thread->prepare(jthread); | |
| 2683 } | |
| 2684 } | |
| 2685 } | |
| 2686 | |
| 2687 if (throw_illegal_thread_state) { | |
| 2688 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
| 2689 } | |
| 2690 | |
| 2691 assert(native_thread != NULL, "Starting null thread?"); | |
| 2692 | |
| 2693 if (native_thread->osthread() == NULL) { | |
| 2694 // No one should hold a reference to the 'native_thread'. | |
| 2695 delete native_thread; | |
| 2696 if (JvmtiExport::should_post_resource_exhausted()) { | |
| 2697 JvmtiExport::post_resource_exhausted( | |
| 2698 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
| 2699 "unable to create new native thread"); | |
| 2700 } | |
| 2701 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
| 2702 "unable to create new native thread"); | |
| 2703 } | |
| 2704 | |
| 2705 Thread::start(native_thread); | |
| 2706 | |
| 2707 JVM_END | |
| 2708 | |
| 2709 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
| 2710 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
| 2711 // but is thought to be reliable and simple. In the case, where the receiver is the | |
|
2162
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diff
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|
2712 // same thread as the sender, no safepoint is needed. |
| 0 | 2713 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
| 2714 JVMWrapper("JVM_StopThread"); | |
| 2715 | |
| 2716 oop java_throwable = JNIHandles::resolve(throwable); | |
| 2717 if (java_throwable == NULL) { | |
| 2718 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 2719 } | |
| 2720 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2721 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
| 2722 Events::log("JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", receiver, (address)java_thread, throwable); | |
|
2162
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diff
changeset
|
2723 // First check if thread is alive |
| 0 | 2724 if (receiver != NULL) { |
| 2725 // Check if exception is getting thrown at self (use oop equality, since the | |
| 2726 // target object might exit) | |
| 2727 if (java_thread == thread->threadObj()) { | |
| 2728 THROW_OOP(java_throwable); | |
| 2729 } else { | |
| 2730 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
| 2731 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
| 2732 } | |
| 2733 } | |
|
2162
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1980
diff
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|
2734 else { |
|
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1980
diff
changeset
|
2735 // Either: |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2736 // - target thread has not been started before being stopped, or |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2737 // - target thread already terminated |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2738 // We could read the threadStatus to determine which case it is |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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parents:
1980
diff
changeset
|
2739 // but that is overkill as it doesn't matter. We must set the |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2740 // stillborn flag for the first case, and if the thread has already |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2741 // exited setting this flag has no affect |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2742 java_lang_Thread::set_stillborn(java_thread); |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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1980
diff
changeset
|
2743 } |
| 0 | 2744 JVM_END |
| 2745 | |
| 2746 | |
| 2747 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
| 2748 JVMWrapper("JVM_IsThreadAlive"); | |
| 2749 | |
| 2750 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
| 2751 return java_lang_Thread::is_alive(thread_oop); | |
| 2752 JVM_END | |
| 2753 | |
| 2754 | |
| 2755 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
| 2756 JVMWrapper("JVM_SuspendThread"); | |
| 2757 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2758 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
| 2759 | |
| 2760 if (receiver != NULL) { | |
| 2761 // thread has run and has not exited (still on threads list) | |
| 2762 | |
| 2763 { | |
| 2764 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
| 2765 if (receiver->is_external_suspend()) { | |
| 2766 // Don't allow nested external suspend requests. We can't return | |
| 2767 // an error from this interface so just ignore the problem. | |
| 2768 return; | |
| 2769 } | |
| 2770 if (receiver->is_exiting()) { // thread is in the process of exiting | |
| 2771 return; | |
| 2772 } | |
| 2773 receiver->set_external_suspend(); | |
| 2774 } | |
| 2775 | |
| 2776 // java_suspend() will catch threads in the process of exiting | |
| 2777 // and will ignore them. | |
| 2778 receiver->java_suspend(); | |
| 2779 | |
| 2780 // It would be nice to have the following assertion in all the | |
| 2781 // time, but it is possible for a racing resume request to have | |
| 2782 // resumed this thread right after we suspended it. Temporarily | |
| 2783 // enable this assertion if you are chasing a different kind of | |
| 2784 // bug. | |
| 2785 // | |
| 2786 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
| 2787 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
| 2788 } | |
| 2789 JVM_END | |
| 2790 | |
| 2791 | |
| 2792 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
| 2793 JVMWrapper("JVM_ResumeThread"); | |
| 2794 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
| 2795 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
| 2796 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
| 2797 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
| 2798 // looks at it. | |
| 2799 MutexLocker ml(Threads_lock); | |
| 2800 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 2801 if (thr != NULL) { | |
| 2802 // the thread has run and is not in the process of exiting | |
| 2803 thr->java_resume(); | |
| 2804 } | |
| 2805 JVM_END | |
| 2806 | |
| 2807 | |
| 2808 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
| 2809 JVMWrapper("JVM_SetThreadPriority"); | |
| 2810 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 2811 MutexLocker ml(Threads_lock); | |
| 2812 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2813 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
| 2814 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 2815 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
| 2816 Thread::set_priority(thr, (ThreadPriority)prio); | |
| 2817 } | |
| 2818 JVM_END | |
| 2819 | |
| 2820 | |
| 2821 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
| 2822 JVMWrapper("JVM_Yield"); | |
| 2823 if (os::dont_yield()) return; | |
|
1324
e392695de029
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1144
diff
changeset
|
2824 HS_DTRACE_PROBE0(hotspot, thread__yield); |
| 0 | 2825 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
| 2826 // Critical for similar threading behaviour | |
| 2827 if (ConvertYieldToSleep) { | |
| 2828 os::sleep(thread, MinSleepInterval, false); | |
| 2829 } else { | |
| 2830 os::yield(); | |
| 2831 } | |
| 2832 JVM_END | |
| 2833 | |
| 2834 | |
| 2835 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
| 2836 JVMWrapper("JVM_Sleep"); | |
| 2837 | |
| 2838 if (millis < 0) { | |
| 2839 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
| 2840 } | |
| 2841 | |
| 2842 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
| 2843 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 2844 } | |
| 2845 | |
| 2846 // Save current thread state and restore it at the end of this block. | |
| 2847 // And set new thread state to SLEEPING. | |
| 2848 JavaThreadSleepState jtss(thread); | |
| 2849 | |
|
1324
e392695de029
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fparain
parents:
1144
diff
changeset
|
2850 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); |
|
e392695de029
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1144
diff
changeset
|
2851 |
| 0 | 2852 if (millis == 0) { |
| 2853 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
| 2854 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
| 2855 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
| 2856 // for SOLARIS | |
| 2857 if (ConvertSleepToYield) { | |
| 2858 os::yield(); | |
| 2859 } else { | |
| 2860 ThreadState old_state = thread->osthread()->get_state(); | |
| 2861 thread->osthread()->set_state(SLEEPING); | |
| 2862 os::sleep(thread, MinSleepInterval, false); | |
| 2863 thread->osthread()->set_state(old_state); | |
| 2864 } | |
| 2865 } else { | |
| 2866 ThreadState old_state = thread->osthread()->get_state(); | |
| 2867 thread->osthread()->set_state(SLEEPING); | |
| 2868 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
| 2869 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
| 2870 // us while we were sleeping. We do not overwrite those. | |
| 2871 if (!HAS_PENDING_EXCEPTION) { | |
|
1324
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1144
diff
changeset
|
2872 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); |
| 0 | 2873 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
| 2874 // to properly restore the thread state. That's likely wrong. | |
| 2875 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 2876 } | |
| 2877 } | |
| 2878 thread->osthread()->set_state(old_state); | |
| 2879 } | |
|
1324
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1144
diff
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|
2880 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); |
| 0 | 2881 JVM_END |
| 2882 | |
| 2883 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
| 2884 JVMWrapper("JVM_CurrentThread"); | |
| 2885 oop jthread = thread->threadObj(); | |
| 2886 assert (thread != NULL, "no current thread!"); | |
| 2887 return JNIHandles::make_local(env, jthread); | |
| 2888 JVM_END | |
| 2889 | |
| 2890 | |
| 2891 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
| 2892 JVMWrapper("JVM_CountStackFrames"); | |
| 2893 | |
| 2894 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 2895 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2896 bool throw_illegal_thread_state = false; | |
| 2897 int count = 0; | |
| 2898 | |
| 2899 { | |
| 2900 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 2901 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 2902 // acquire of the lock | |
| 2903 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 2904 | |
| 2905 if (thr == NULL) { | |
| 2906 // do nothing | |
| 2907 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
| 2908 // Check whether this java thread has been suspended already. If not, throws | |
| 2909 // IllegalThreadStateException. We defer to throw that exception until | |
| 2910 // Threads_lock is released since loading exception class has to leave VM. | |
| 2911 // The correct way to test a thread is actually suspended is | |
| 2912 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
| 2913 // the Threads_lock. The above tests are sufficient for our purposes | |
| 2914 // provided the walkability of the stack is stable - which it isn't | |
| 2915 // 100% but close enough for most practical purposes. | |
| 2916 throw_illegal_thread_state = true; | |
| 2917 } else { | |
| 2918 // Count all java activation, i.e., number of vframes | |
| 2919 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
| 2920 // Native frames are not counted | |
| 2921 if (!vfst.method()->is_native()) count++; | |
| 2922 } | |
| 2923 } | |
| 2924 } | |
| 2925 | |
| 2926 if (throw_illegal_thread_state) { | |
| 2927 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
| 2928 "this thread is not suspended"); | |
| 2929 } | |
| 2930 return count; | |
| 2931 JVM_END | |
| 2932 | |
| 2933 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
| 2934 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
| 2935 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
| 2936 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
| 2937 // outside the critical section. Threads_lock is hot so we want to minimize | |
| 2938 // the hold-time. A cleaner interface would be to decompose interrupt into | |
| 2939 // two steps. The 1st phase, performed under Threads_lock, would return | |
| 2940 // a closure that'd be invoked after Threads_lock was dropped. | |
| 2941 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
| 2942 // admit spurious wakeups. | |
| 2943 | |
| 2944 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
| 2945 JVMWrapper("JVM_Interrupt"); | |
| 2946 | |
| 2947 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 2948 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2949 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 2950 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 2951 // acquire of the lock | |
| 2952 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 2953 if (thr != NULL) { | |
| 2954 Thread::interrupt(thr); | |
| 2955 } | |
| 2956 JVM_END | |
| 2957 | |
| 2958 | |
| 2959 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
| 2960 JVMWrapper("JVM_IsInterrupted"); | |
| 2961 | |
| 2962 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 2963 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2964 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 2965 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 2966 // acquire of the lock | |
| 2967 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 2968 if (thr == NULL) { | |
| 2969 return JNI_FALSE; | |
| 2970 } else { | |
| 2971 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
| 2972 } | |
| 2973 JVM_END | |
| 2974 | |
| 2975 | |
| 2976 // Return true iff the current thread has locked the object passed in | |
| 2977 | |
| 2978 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
| 2979 JVMWrapper("JVM_HoldsLock"); | |
| 2980 assert(THREAD->is_Java_thread(), "sanity check"); | |
| 2981 if (obj == NULL) { | |
| 2982 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
| 2983 } | |
| 2984 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
| 2985 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
| 2986 JVM_END | |
| 2987 | |
| 2988 | |
| 2989 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
| 2990 JVMWrapper("JVM_DumpAllStacks"); | |
| 2991 VM_PrintThreads op; | |
| 2992 VMThread::execute(&op); | |
| 2993 if (JvmtiExport::should_post_data_dump()) { | |
| 2994 JvmtiExport::post_data_dump(); | |
| 2995 } | |
| 2996 JVM_END | |
| 2997 | |
| 2998 | |
| 2999 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
| 3000 | |
| 3001 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
| 3002 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
| 3003 if (jthread->privileged_stack_top() == NULL) return false; | |
| 3004 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
| 3005 oop loader = jthread->privileged_stack_top()->class_loader(); | |
| 3006 if (loader == NULL) return true; | |
| 3007 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
| 3008 if (trusted) return true; | |
| 3009 } | |
| 3010 return false; | |
| 3011 } | |
| 3012 | |
| 3013 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
| 3014 JVMWrapper("JVM_CurrentLoadedClass"); | |
| 3015 ResourceMark rm(THREAD); | |
| 3016 | |
| 3017 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3018 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3019 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3020 if (trusted) return NULL; | |
| 3021 | |
| 3022 methodOop m = vfst.method(); | |
| 3023 if (!m->is_native()) { | |
| 3024 klassOop holder = m->method_holder(); | |
| 3025 oop loader = instanceKlass::cast(holder)->class_loader(); | |
| 3026 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { | |
| 3027 return (jclass) JNIHandles::make_local(env, Klass::cast(holder)->java_mirror()); | |
| 3028 } | |
| 3029 } | |
| 3030 } | |
| 3031 return NULL; | |
| 3032 JVM_END | |
| 3033 | |
| 3034 | |
| 3035 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
| 3036 JVMWrapper("JVM_CurrentClassLoader"); | |
| 3037 ResourceMark rm(THREAD); | |
| 3038 | |
| 3039 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3040 | |
| 3041 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3042 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3043 if (trusted) return NULL; | |
| 3044 | |
| 3045 methodOop m = vfst.method(); | |
| 3046 if (!m->is_native()) { | |
| 3047 klassOop holder = m->method_holder(); | |
| 3048 assert(holder->is_klass(), "just checking"); | |
| 3049 oop loader = instanceKlass::cast(holder)->class_loader(); | |
| 3050 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { | |
| 3051 return JNIHandles::make_local(env, loader); | |
| 3052 } | |
| 3053 } | |
| 3054 } | |
| 3055 return NULL; | |
| 3056 JVM_END | |
| 3057 | |
| 3058 | |
| 3059 // Utility object for collecting method holders walking down the stack | |
| 3060 class KlassLink: public ResourceObj { | |
| 3061 public: | |
| 3062 KlassHandle klass; | |
| 3063 KlassLink* next; | |
| 3064 | |
| 3065 KlassLink(KlassHandle k) { klass = k; next = NULL; } | |
| 3066 }; | |
| 3067 | |
| 3068 | |
| 3069 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
| 3070 JVMWrapper("JVM_GetClassContext"); | |
| 3071 ResourceMark rm(THREAD); | |
| 3072 JvmtiVMObjectAllocEventCollector oam; | |
| 3073 // Collect linked list of (handles to) method holders | |
| 3074 KlassLink* first = NULL; | |
| 3075 KlassLink* last = NULL; | |
| 3076 int depth = 0; | |
| 3077 | |
| 3078 for(vframeStream vfst(thread); !vfst.at_end(); vfst.security_get_caller_frame(1)) { | |
| 3079 // Native frames are not returned | |
| 3080 if (!vfst.method()->is_native()) { | |
| 3081 klassOop holder = vfst.method()->method_holder(); | |
| 3082 assert(holder->is_klass(), "just checking"); | |
| 3083 depth++; | |
| 3084 KlassLink* l = new KlassLink(KlassHandle(thread, holder)); | |
| 3085 if (first == NULL) { | |
| 3086 first = last = l; | |
| 3087 } else { | |
| 3088 last->next = l; | |
| 3089 last = l; | |
| 3090 } | |
| 3091 } | |
| 3092 } | |
| 3093 | |
| 3094 // Create result array of type [Ljava/lang/Class; | |
| 1142 | 3095 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), depth, CHECK_NULL); |
| 0 | 3096 // Fill in mirrors corresponding to method holders |
| 3097 int index = 0; | |
| 3098 while (first != NULL) { | |
| 3099 result->obj_at_put(index++, Klass::cast(first->klass())->java_mirror()); | |
| 3100 first = first->next; | |
| 3101 } | |
| 3102 assert(index == depth, "just checking"); | |
| 3103 | |
| 3104 return (jobjectArray) JNIHandles::make_local(env, result); | |
| 3105 JVM_END | |
| 3106 | |
| 3107 | |
| 3108 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
| 3109 JVMWrapper("JVM_ClassDepth"); | |
| 3110 ResourceMark rm(THREAD); | |
| 3111 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 3112 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
| 3113 | |
| 3114 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
|
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3115 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
|
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|
3116 if (class_name_sym == NULL) { |
| 0 | 3117 return -1; |
| 3118 } | |
| 3119 | |
| 3120 int depth = 0; | |
| 3121 | |
| 3122 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3123 if (!vfst.method()->is_native()) { | |
| 3124 klassOop holder = vfst.method()->method_holder(); | |
| 3125 assert(holder->is_klass(), "just checking"); | |
|
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3126 if (instanceKlass::cast(holder)->name() == class_name_sym) { |
| 0 | 3127 return depth; |
| 3128 } | |
| 3129 depth++; | |
| 3130 } | |
| 3131 } | |
| 3132 return -1; | |
| 3133 JVM_END | |
| 3134 | |
| 3135 | |
| 3136 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
| 3137 JVMWrapper("JVM_ClassLoaderDepth"); | |
| 3138 ResourceMark rm(THREAD); | |
| 3139 int depth = 0; | |
| 3140 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3141 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
| 3142 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3143 if (trusted) return -1; | |
| 3144 | |
| 3145 methodOop m = vfst.method(); | |
| 3146 if (!m->is_native()) { | |
| 3147 klassOop holder = m->method_holder(); | |
| 3148 assert(holder->is_klass(), "just checking"); | |
| 3149 oop loader = instanceKlass::cast(holder)->class_loader(); | |
| 3150 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { | |
| 3151 return depth; | |
| 3152 } | |
| 3153 depth++; | |
| 3154 } | |
| 3155 } | |
| 3156 return -1; | |
| 3157 JVM_END | |
| 3158 | |
| 3159 | |
| 3160 // java.lang.Package //////////////////////////////////////////////////////////////// | |
| 3161 | |
| 3162 | |
| 3163 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
| 3164 JVMWrapper("JVM_GetSystemPackage"); | |
| 3165 ResourceMark rm(THREAD); | |
| 3166 JvmtiVMObjectAllocEventCollector oam; | |
| 3167 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
| 3168 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
| 3169 return (jstring) JNIHandles::make_local(result); | |
| 3170 JVM_END | |
| 3171 | |
| 3172 | |
| 3173 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
| 3174 JVMWrapper("JVM_GetSystemPackages"); | |
| 3175 JvmtiVMObjectAllocEventCollector oam; | |
| 3176 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
| 3177 return (jobjectArray) JNIHandles::make_local(result); | |
| 3178 JVM_END | |
| 3179 | |
| 3180 | |
| 3181 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
| 3182 | |
| 3183 bool force_verify_field_access(klassOop current_class, klassOop field_class, AccessFlags access, bool classloader_only) { | |
| 3184 if (current_class == NULL) { | |
| 3185 return true; | |
| 3186 } | |
| 3187 if ((current_class == field_class) || access.is_public()) { | |
| 3188 return true; | |
| 3189 } | |
| 3190 | |
| 3191 if (access.is_protected()) { | |
| 3192 // See if current_class is a subclass of field_class | |
| 3193 if (Klass::cast(current_class)->is_subclass_of(field_class)) { | |
| 3194 return true; | |
| 3195 } | |
| 3196 } | |
| 3197 | |
| 3198 return (!access.is_private() && instanceKlass::cast(current_class)->is_same_class_package(field_class)); | |
| 3199 } | |
| 3200 | |
| 3201 | |
| 3202 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
| 3203 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
| 3204 JVMWrapper("JVM_AllocateNewObject"); | |
| 3205 JvmtiVMObjectAllocEventCollector oam; | |
| 3206 // Receiver is not used | |
| 3207 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
| 3208 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
| 3209 | |
| 3210 // Cannot instantiate primitive types | |
| 3211 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
| 3212 ResourceMark rm(THREAD); | |
| 3213 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3214 } | |
| 3215 | |
| 3216 // Arrays not allowed here, must use JVM_AllocateNewArray | |
| 3217 if (Klass::cast(java_lang_Class::as_klassOop(curr_mirror))->oop_is_javaArray() || | |
| 3218 Klass::cast(java_lang_Class::as_klassOop(init_mirror))->oop_is_javaArray()) { | |
| 3219 ResourceMark rm(THREAD); | |
| 3220 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3221 } | |
| 3222 | |
| 3223 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_klassOop(curr_mirror)); | |
| 3224 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_klassOop(init_mirror)); | |
| 3225 | |
| 3226 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
| 3227 | |
| 3228 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
| 3229 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
| 3230 | |
| 3231 // Make sure klass is initialized, since we are about to instantiate one of them. | |
| 3232 curr_klass->initialize(CHECK_NULL); | |
| 3233 | |
| 3234 methodHandle m (THREAD, | |
| 3235 init_klass->find_method(vmSymbols::object_initializer_name(), | |
| 3236 vmSymbols::void_method_signature())); | |
| 3237 if (m.is_null()) { | |
| 3238 ResourceMark rm(THREAD); | |
| 3239 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
| 3240 methodOopDesc::name_and_sig_as_C_string(Klass::cast(init_klass()), | |
| 3241 vmSymbols::object_initializer_name(), | |
| 3242 vmSymbols::void_method_signature())); | |
| 3243 } | |
| 3244 | |
| 3245 if (curr_klass == init_klass && !m->is_public()) { | |
| 3246 // Calling the constructor for class 'curr_klass'. | |
| 3247 // Only allow calls to a public no-arg constructor. | |
| 3248 // This path corresponds to creating an Externalizable object. | |
| 3249 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3250 } | |
| 3251 | |
| 3252 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
| 3253 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
| 3254 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3255 } | |
| 3256 | |
| 3257 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
| 3258 // Call constructor m. This might call a constructor higher up in the hierachy | |
| 3259 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
| 3260 | |
| 3261 return JNIHandles::make_local(obj()); | |
| 3262 JVM_END | |
| 3263 | |
| 3264 | |
| 3265 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
| 3266 JVMWrapper("JVM_AllocateNewArray"); | |
| 3267 JvmtiVMObjectAllocEventCollector oam; | |
| 3268 oop mirror = JNIHandles::resolve_non_null(currClass); | |
| 3269 | |
| 3270 if (java_lang_Class::is_primitive(mirror)) { | |
| 3271 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3272 } | |
| 3273 klassOop k = java_lang_Class::as_klassOop(mirror); | |
| 3274 oop result; | |
| 3275 | |
| 3276 if (k->klass_part()->oop_is_typeArray()) { | |
| 3277 // typeArray | |
| 3278 result = typeArrayKlass::cast(k)->allocate(length, CHECK_NULL); | |
| 3279 } else if (k->klass_part()->oop_is_objArray()) { | |
| 3280 // objArray | |
| 3281 objArrayKlassHandle oak(THREAD, k); | |
| 3282 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) | |
| 3283 result = oak->allocate(length, CHECK_NULL); | |
| 3284 } else { | |
| 3285 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3286 } | |
| 3287 return JNIHandles::make_local(env, result); | |
| 3288 JVM_END | |
| 3289 | |
| 3290 | |
| 3291 // Return the first non-null class loader up the execution stack, or null | |
| 3292 // if only code from the null class loader is on the stack. | |
| 3293 | |
| 3294 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
| 3295 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3296 // UseNewReflection | |
| 3297 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
| 3298 klassOop holder = vfst.method()->method_holder(); | |
| 3299 oop loader = instanceKlass::cast(holder)->class_loader(); | |
| 3300 if (loader != NULL) { | |
| 3301 return JNIHandles::make_local(env, loader); | |
| 3302 } | |
| 3303 } | |
| 3304 return NULL; | |
| 3305 JVM_END | |
| 3306 | |
| 3307 | |
| 3308 // Load a class relative to the most recent class on the stack with a non-null | |
| 3309 // classloader. | |
| 3310 // This function has been deprecated and should not be considered part of the | |
| 3311 // specified JVM interface. | |
| 3312 | |
| 3313 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
| 3314 jclass currClass, jstring currClassName)) | |
| 3315 JVMWrapper("JVM_LoadClass0"); | |
| 3316 // Receiver is not used | |
| 3317 ResourceMark rm(THREAD); | |
| 3318 | |
| 3319 // Class name argument is not guaranteed to be in internal format | |
| 3320 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
| 3321 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
| 3322 | |
| 3323 const char* str = java_lang_String::as_utf8_string(string()); | |
| 3324 | |
|
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|
3325 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
| 0 | 3326 // It's impossible to create this class; the name cannot fit |
| 3327 // into the constant pool. | |
| 3328 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
| 3329 } | |
| 3330 | |
|
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3331 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
| 0 | 3332 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
| 3333 // Find the most recent class on the stack with a non-null classloader | |
| 3334 oop loader = NULL; | |
| 3335 oop protection_domain = NULL; | |
| 3336 if (curr_klass.is_null()) { | |
| 3337 for (vframeStream vfst(thread); | |
| 3338 !vfst.at_end() && loader == NULL; | |
| 3339 vfst.next()) { | |
| 3340 if (!vfst.method()->is_native()) { | |
| 3341 klassOop holder = vfst.method()->method_holder(); | |
| 3342 loader = instanceKlass::cast(holder)->class_loader(); | |
| 3343 protection_domain = instanceKlass::cast(holder)->protection_domain(); | |
| 3344 } | |
| 3345 } | |
| 3346 } else { | |
| 3347 klassOop curr_klass_oop = java_lang_Class::as_klassOop(curr_klass()); | |
| 3348 loader = instanceKlass::cast(curr_klass_oop)->class_loader(); | |
| 3349 protection_domain = instanceKlass::cast(curr_klass_oop)->protection_domain(); | |
| 3350 } | |
| 3351 Handle h_loader(THREAD, loader); | |
| 3352 Handle h_prot (THREAD, protection_domain); | |
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3353 jclass result = find_class_from_class_loader(env, name, true, h_loader, h_prot, |
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3354 false, thread); |
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3355 if (TraceClassResolution && result != NULL) { |
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|
3356 trace_class_resolution(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(result))); |
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3357 } |
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3358 return result; |
| 0 | 3359 JVM_END |
| 3360 | |
| 3361 | |
| 3362 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
| 3363 | |
| 3364 | |
| 3365 // resolve array handle and check arguments | |
| 3366 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
| 3367 if (arr == NULL) { | |
| 3368 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 3369 } | |
| 3370 oop a = JNIHandles::resolve_non_null(arr); | |
| 3371 if (!a->is_javaArray() || (type_array_only && !a->is_typeArray())) { | |
| 3372 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); | |
| 3373 } | |
| 3374 return arrayOop(a); | |
| 3375 } | |
| 3376 | |
| 3377 | |
| 3378 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
| 3379 JVMWrapper("JVM_GetArrayLength"); | |
| 3380 arrayOop a = check_array(env, arr, false, CHECK_0); | |
| 3381 return a->length(); | |
| 3382 JVM_END | |
| 3383 | |
| 3384 | |
| 3385 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
| 3386 JVMWrapper("JVM_Array_Get"); | |
| 3387 JvmtiVMObjectAllocEventCollector oam; | |
| 3388 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
| 3389 jvalue value; | |
| 3390 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
| 3391 oop box = Reflection::box(&value, type, CHECK_NULL); | |
| 3392 return JNIHandles::make_local(env, box); | |
| 3393 JVM_END | |
| 3394 | |
| 3395 | |
| 3396 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
| 3397 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
| 3398 jvalue value; | |
| 3399 value.i = 0; // to initialize value before getting used in CHECK | |
| 3400 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
| 3401 assert(a->is_typeArray(), "just checking"); | |
| 3402 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
| 3403 BasicType wide_type = (BasicType) wCode; | |
| 3404 if (type != wide_type) { | |
| 3405 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
| 3406 } | |
| 3407 return value; | |
| 3408 JVM_END | |
| 3409 | |
| 3410 | |
| 3411 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
| 3412 JVMWrapper("JVM_SetArrayElement"); | |
| 3413 arrayOop a = check_array(env, arr, false, CHECK); | |
| 3414 oop box = JNIHandles::resolve(val); | |
| 3415 jvalue value; | |
| 3416 value.i = 0; // to initialize value before getting used in CHECK | |
| 3417 BasicType value_type; | |
| 3418 if (a->is_objArray()) { | |
| 3419 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
| 3420 value_type = Reflection::unbox_for_regular_object(box, &value); | |
| 3421 } else { | |
| 3422 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
| 3423 } | |
| 3424 Reflection::array_set(&value, a, index, value_type, CHECK); | |
| 3425 JVM_END | |
| 3426 | |
| 3427 | |
| 3428 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
| 3429 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
| 3430 arrayOop a = check_array(env, arr, true, CHECK); | |
| 3431 assert(a->is_typeArray(), "just checking"); | |
| 3432 BasicType value_type = (BasicType) vCode; | |
| 3433 Reflection::array_set(&v, a, index, value_type, CHECK); | |
| 3434 JVM_END | |
| 3435 | |
| 3436 | |
| 3437 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
| 3438 JVMWrapper("JVM_NewArray"); | |
| 3439 JvmtiVMObjectAllocEventCollector oam; | |
| 3440 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3441 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
| 3442 return JNIHandles::make_local(env, result); | |
| 3443 JVM_END | |
| 3444 | |
| 3445 | |
| 3446 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
| 3447 JVMWrapper("JVM_NewMultiArray"); | |
| 3448 JvmtiVMObjectAllocEventCollector oam; | |
| 3449 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
| 3450 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3451 assert(dim_array->is_typeArray(), "just checking"); | |
| 3452 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
| 3453 return JNIHandles::make_local(env, result); | |
| 3454 JVM_END | |
| 3455 | |
| 3456 | |
| 3457 // Networking library support //////////////////////////////////////////////////////////////////// | |
| 3458 | |
| 3459 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
| 3460 JVMWrapper("JVM_InitializeSocketLibrary"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3461 return 0; |
| 0 | 3462 JVM_END |
| 3463 | |
| 3464 | |
| 3465 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
| 3466 JVMWrapper("JVM_Socket"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3467 return os::socket(domain, type, protocol); |
| 0 | 3468 JVM_END |
| 3469 | |
| 3470 | |
| 3471 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
| 3472 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
| 3473 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3474 return os::socket_close(fd); |
| 0 | 3475 JVM_END |
| 3476 | |
| 3477 | |
| 3478 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
| 3479 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
| 3480 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3481 return os::socket_shutdown(fd, howto); |
| 0 | 3482 JVM_END |
| 3483 | |
| 3484 | |
| 3485 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3486 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
| 3487 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3488 return os::recv(fd, buf, nBytes, flags); |
| 0 | 3489 JVM_END |
| 3490 | |
| 3491 | |
| 3492 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3493 JVMWrapper2("JVM_Send (0x%x)", fd); | |
| 3494 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3495 return os::send(fd, buf, nBytes, flags); |
| 0 | 3496 JVM_END |
| 3497 | |
| 3498 | |
| 3499 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
| 3500 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
| 3501 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3502 return os::timeout(fd, timeout); |
| 0 | 3503 JVM_END |
| 3504 | |
| 3505 | |
| 3506 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
| 3507 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
| 3508 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3509 return os::listen(fd, count); |
| 0 | 3510 JVM_END |
| 3511 | |
| 3512 | |
| 3513 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
| 3514 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
| 3515 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3516 return os::connect(fd, him, len); |
| 0 | 3517 JVM_END |
| 3518 | |
| 3519 | |
| 3520 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
| 3521 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
| 3522 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3523 return os::bind(fd, him, len); |
| 0 | 3524 JVM_END |
| 3525 | |
| 3526 | |
| 3527 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
| 3528 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
| 3529 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3530 return os::accept(fd, him, (int *)len); |
| 0 | 3531 JVM_END |
| 3532 | |
| 3533 | |
| 3534 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
| 3535 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
| 3536 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3537 return os::recvfrom(fd, buf, nBytes, flags, from, fromlen); |
| 0 | 3538 JVM_END |
| 3539 | |
| 3540 | |
| 3541 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
| 3542 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
| 3543 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3544 return os::get_sock_name(fd, him, len); |
| 0 | 3545 JVM_END |
| 3546 | |
| 3547 | |
| 3548 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
| 3549 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
| 3550 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3551 return os::sendto(fd, buf, len, flags, to, tolen); |
| 0 | 3552 JVM_END |
| 3553 | |
| 3554 | |
| 3555 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
| 3556 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
| 3557 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3558 return os::socket_available(fd, pbytes); |
| 0 | 3559 JVM_END |
| 3560 | |
| 3561 | |
| 3562 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
| 3563 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
| 3564 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3565 return os::get_sock_opt(fd, level, optname, optval, optlen); |
| 0 | 3566 JVM_END |
| 3567 | |
| 3568 | |
| 3569 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
| 3570 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
| 3571 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3572 return os::set_sock_opt(fd, level, optname, optval, optlen); |
| 0 | 3573 JVM_END |
| 3574 | |
| 3575 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) | |
| 3576 JVMWrapper("JVM_GetHostName"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3577 return os::get_host_name(name, namelen); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3578 JVM_END |
| 0 | 3579 |
| 3580 // Library support /////////////////////////////////////////////////////////////////////////// | |
| 3581 | |
| 3582 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
| 3583 //%note jvm_ct | |
| 3584 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
| 3585 char ebuf[1024]; | |
| 3586 void *load_result; | |
| 3587 { | |
| 3588 ThreadToNativeFromVM ttnfvm(thread); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3589 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
| 0 | 3590 } |
| 3591 if (load_result == NULL) { | |
| 3592 char msg[1024]; | |
| 3593 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
| 3594 // Since 'ebuf' may contain a string encoded using | |
| 3595 // platform encoding scheme, we need to pass | |
| 3596 // Exceptions::unsafe_to_utf8 to the new_exception method | |
| 3597 // as the last argument. See bug 6367357. | |
| 3598 Handle h_exception = | |
| 3599 Exceptions::new_exception(thread, | |
| 3600 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
| 3601 msg, Exceptions::unsafe_to_utf8); | |
| 3602 | |
| 3603 THROW_HANDLE_0(h_exception); | |
| 3604 } | |
| 3605 return load_result; | |
| 3606 JVM_END | |
| 3607 | |
| 3608 | |
| 3609 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
| 3610 JVMWrapper("JVM_UnloadLibrary"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3611 os::dll_unload(handle); |
| 0 | 3612 JVM_END |
| 3613 | |
| 3614 | |
| 3615 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
| 3616 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3617 return os::dll_lookup(handle, name); |
| 0 | 3618 JVM_END |
| 3619 | |
| 3620 // Floating point support //////////////////////////////////////////////////////////////////// | |
| 3621 | |
| 3622 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
| 3623 JVMWrapper("JVM_IsNaN"); | |
| 3624 return g_isnan(a); | |
| 3625 JVM_END | |
| 3626 | |
| 3627 | |
| 3628 | |
| 3629 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
| 3630 | |
| 3631 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
| 3632 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
| 3633 return Threads::is_supported_jni_version_including_1_1(version); | |
| 3634 JVM_END | |
| 3635 | |
| 3636 | |
| 3637 // String support /////////////////////////////////////////////////////////////////////////// | |
| 3638 | |
| 3639 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
| 3640 JVMWrapper("JVM_InternString"); | |
| 3641 JvmtiVMObjectAllocEventCollector oam; | |
| 3642 if (str == NULL) return NULL; | |
| 3643 oop string = JNIHandles::resolve_non_null(str); | |
| 3644 oop result = StringTable::intern(string, CHECK_NULL); | |
| 3645 return (jstring) JNIHandles::make_local(env, result); | |
| 3646 JVM_END | |
| 3647 | |
| 3648 | |
| 3649 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
| 3650 | |
| 3651 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
| 3652 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
| 3653 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
| 3654 // that only works with java threads. | |
| 3655 | |
| 3656 | |
| 3657 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
| 3658 VM_Exit::block_if_vm_exited(); | |
| 3659 JVMWrapper("JVM_RawMonitorCreate"); | |
| 3660 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
| 3661 } | |
| 3662 | |
| 3663 | |
| 3664 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
| 3665 VM_Exit::block_if_vm_exited(); | |
| 3666 JVMWrapper("JVM_RawMonitorDestroy"); | |
| 3667 delete ((Mutex*) mon); | |
| 3668 } | |
| 3669 | |
| 3670 | |
| 3671 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
| 3672 VM_Exit::block_if_vm_exited(); | |
| 3673 JVMWrapper("JVM_RawMonitorEnter"); | |
| 3674 ((Mutex*) mon)->jvm_raw_lock(); | |
| 3675 return 0; | |
| 3676 } | |
| 3677 | |
| 3678 | |
| 3679 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
| 3680 VM_Exit::block_if_vm_exited(); | |
| 3681 JVMWrapper("JVM_RawMonitorExit"); | |
| 3682 ((Mutex*) mon)->jvm_raw_unlock(); | |
| 3683 } | |
| 3684 | |
| 3685 | |
| 3686 // Support for Serialization | |
| 3687 | |
| 3688 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
| 3689 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
| 3690 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
| 3691 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
| 3692 | |
| 3693 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
| 3694 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
| 3695 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
| 3696 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
| 3697 | |
| 3698 | |
| 3699 void initialize_converter_functions() { | |
| 3700 if (JDK_Version::is_gte_jdk14x_version()) { | |
| 3701 // These functions only exist for compatibility with 1.3.1 and earlier | |
| 3702 return; | |
| 3703 } | |
| 3704 | |
| 3705 // called from universe_post_init() | |
| 3706 assert( | |
| 3707 int_bits_to_float_fn == NULL && | |
| 3708 long_bits_to_double_fn == NULL && | |
| 3709 float_to_int_bits_fn == NULL && | |
| 3710 double_to_long_bits_fn == NULL , | |
| 3711 "initialization done twice" | |
| 3712 ); | |
| 3713 // initialize | |
| 3714 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
| 3715 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
| 3716 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
| 3717 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
| 3718 // verify | |
| 3719 assert( | |
| 3720 int_bits_to_float_fn != NULL && | |
| 3721 long_bits_to_double_fn != NULL && | |
| 3722 float_to_int_bits_fn != NULL && | |
| 3723 double_to_long_bits_fn != NULL , | |
| 3724 "initialization failed" | |
| 3725 ); | |
| 3726 } | |
| 3727 | |
| 3728 | |
| 3729 // Serialization | |
| 3730 JVM_ENTRY(void, JVM_SetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
| 3731 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
| 3732 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
| 3733 | |
| 3734 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
| 3735 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
| 3736 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
| 3737 oop o = JNIHandles::resolve(obj); | |
| 3738 | |
| 3739 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
| 3740 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 3741 } | |
| 3742 | |
| 3743 jsize nfids = fids->length(); | |
| 3744 if (nfids == 0) return; | |
| 3745 | |
| 3746 if (tcodes->length() < nfids) { | |
| 3747 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
| 3748 } | |
| 3749 | |
| 3750 jsize off = 0; | |
| 3751 /* loop through fields, setting values */ | |
| 3752 for (jsize i = 0; i < nfids; i++) { | |
| 3753 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
| 3754 int field_offset; | |
| 3755 if (fid != NULL) { | |
| 3756 // NULL is a legal value for fid, but retrieving the field offset | |
| 3757 // trigger assertion in that case | |
| 3758 field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 3759 } | |
| 3760 | |
| 3761 switch (tcodes->char_at(i)) { | |
| 3762 case 'Z': | |
| 3763 if (fid != NULL) { | |
| 3764 jboolean val = (dbuf->byte_at(off) != 0) ? JNI_TRUE : JNI_FALSE; | |
| 3765 o->bool_field_put(field_offset, val); | |
| 3766 } | |
| 3767 off++; | |
| 3768 break; | |
| 3769 | |
| 3770 case 'B': | |
| 3771 if (fid != NULL) { | |
| 3772 o->byte_field_put(field_offset, dbuf->byte_at(off)); | |
| 3773 } | |
| 3774 off++; | |
| 3775 break; | |
| 3776 | |
| 3777 case 'C': | |
| 3778 if (fid != NULL) { | |
| 3779 jchar val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
| 3780 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
| 3781 o->char_field_put(field_offset, val); | |
| 3782 } | |
| 3783 off += 2; | |
| 3784 break; | |
| 3785 | |
| 3786 case 'S': | |
| 3787 if (fid != NULL) { | |
| 3788 jshort val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
| 3789 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
| 3790 o->short_field_put(field_offset, val); | |
| 3791 } | |
| 3792 off += 2; | |
| 3793 break; | |
| 3794 | |
| 3795 case 'I': | |
| 3796 if (fid != NULL) { | |
| 3797 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
| 3798 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
| 3799 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
| 3800 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
| 3801 o->int_field_put(field_offset, ival); | |
| 3802 } | |
| 3803 off += 4; | |
| 3804 break; | |
| 3805 | |
| 3806 case 'F': | |
| 3807 if (fid != NULL) { | |
| 3808 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
| 3809 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
| 3810 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
| 3811 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
| 3812 jfloat fval = (*int_bits_to_float_fn)(env, NULL, ival); | |
| 3813 o->float_field_put(field_offset, fval); | |
| 3814 } | |
| 3815 off += 4; | |
| 3816 break; | |
| 3817 | |
| 3818 case 'J': | |
| 3819 if (fid != NULL) { | |
| 3820 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
| 3821 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
| 3822 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
| 3823 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
| 3824 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
| 3825 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
| 3826 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
| 3827 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
| 3828 o->long_field_put(field_offset, lval); | |
| 3829 } | |
| 3830 off += 8; | |
| 3831 break; | |
| 3832 | |
| 3833 case 'D': | |
| 3834 if (fid != NULL) { | |
| 3835 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
| 3836 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
| 3837 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
| 3838 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
| 3839 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
| 3840 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
| 3841 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
| 3842 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
| 3843 jdouble dval = (*long_bits_to_double_fn)(env, NULL, lval); | |
| 3844 o->double_field_put(field_offset, dval); | |
| 3845 } | |
| 3846 off += 8; | |
| 3847 break; | |
| 3848 | |
| 3849 default: | |
| 3850 // Illegal typecode | |
| 3851 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
| 3852 } | |
| 3853 } | |
| 3854 JVM_END | |
| 3855 | |
| 3856 | |
| 3857 JVM_ENTRY(void, JVM_GetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
| 3858 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
| 3859 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
| 3860 | |
| 3861 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
| 3862 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
| 3863 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
| 3864 oop o = JNIHandles::resolve(obj); | |
| 3865 | |
| 3866 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
| 3867 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 3868 } | |
| 3869 | |
| 3870 jsize nfids = fids->length(); | |
| 3871 if (nfids == 0) return; | |
| 3872 | |
| 3873 if (tcodes->length() < nfids) { | |
| 3874 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
| 3875 } | |
| 3876 | |
| 3877 /* loop through fields, fetching values */ | |
| 3878 jsize off = 0; | |
| 3879 for (jsize i = 0; i < nfids; i++) { | |
| 3880 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
| 3881 if (fid == NULL) { | |
| 3882 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 3883 } | |
| 3884 int field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 3885 | |
| 3886 switch (tcodes->char_at(i)) { | |
| 3887 case 'Z': | |
| 3888 { | |
| 3889 jboolean val = o->bool_field(field_offset); | |
| 3890 dbuf->byte_at_put(off++, (val != 0) ? 1 : 0); | |
| 3891 } | |
| 3892 break; | |
| 3893 | |
| 3894 case 'B': | |
| 3895 dbuf->byte_at_put(off++, o->byte_field(field_offset)); | |
| 3896 break; | |
| 3897 | |
| 3898 case 'C': | |
| 3899 { | |
| 3900 jchar val = o->char_field(field_offset); | |
| 3901 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 3902 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 3903 } | |
| 3904 break; | |
| 3905 | |
| 3906 case 'S': | |
| 3907 { | |
| 3908 jshort val = o->short_field(field_offset); | |
| 3909 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 3910 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 3911 } | |
| 3912 break; | |
| 3913 | |
| 3914 case 'I': | |
| 3915 { | |
| 3916 jint val = o->int_field(field_offset); | |
| 3917 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
| 3918 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
| 3919 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 3920 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 3921 } | |
| 3922 break; | |
| 3923 | |
| 3924 case 'F': | |
| 3925 { | |
| 3926 jfloat fval = o->float_field(field_offset); | |
| 3927 jint ival = (*float_to_int_bits_fn)(env, NULL, fval); | |
| 3928 dbuf->byte_at_put(off++, (ival >> 24) & 0xFF); | |
| 3929 dbuf->byte_at_put(off++, (ival >> 16) & 0xFF); | |
| 3930 dbuf->byte_at_put(off++, (ival >> 8) & 0xFF); | |
| 3931 dbuf->byte_at_put(off++, (ival >> 0) & 0xFF); | |
| 3932 } | |
| 3933 break; | |
| 3934 | |
| 3935 case 'J': | |
| 3936 { | |
| 3937 jlong val = o->long_field(field_offset); | |
| 3938 dbuf->byte_at_put(off++, (val >> 56) & 0xFF); | |
| 3939 dbuf->byte_at_put(off++, (val >> 48) & 0xFF); | |
| 3940 dbuf->byte_at_put(off++, (val >> 40) & 0xFF); | |
| 3941 dbuf->byte_at_put(off++, (val >> 32) & 0xFF); | |
| 3942 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
| 3943 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
| 3944 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 3945 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 3946 } | |
| 3947 break; | |
| 3948 | |
| 3949 case 'D': | |
| 3950 { | |
| 3951 jdouble dval = o->double_field(field_offset); | |
| 3952 jlong lval = (*double_to_long_bits_fn)(env, NULL, dval); | |
| 3953 dbuf->byte_at_put(off++, (lval >> 56) & 0xFF); | |
| 3954 dbuf->byte_at_put(off++, (lval >> 48) & 0xFF); | |
| 3955 dbuf->byte_at_put(off++, (lval >> 40) & 0xFF); | |
| 3956 dbuf->byte_at_put(off++, (lval >> 32) & 0xFF); | |
| 3957 dbuf->byte_at_put(off++, (lval >> 24) & 0xFF); | |
| 3958 dbuf->byte_at_put(off++, (lval >> 16) & 0xFF); | |
| 3959 dbuf->byte_at_put(off++, (lval >> 8) & 0xFF); | |
| 3960 dbuf->byte_at_put(off++, (lval >> 0) & 0xFF); | |
| 3961 } | |
| 3962 break; | |
| 3963 | |
| 3964 default: | |
| 3965 // Illegal typecode | |
| 3966 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
| 3967 } | |
| 3968 } | |
| 3969 JVM_END | |
| 3970 | |
| 3971 | |
| 3972 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
| 3973 | |
|
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|
3974 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS) { |
| 0 | 3975 // Security Note: |
| 3976 // The Java level wrapper will perform the necessary security check allowing | |
| 3977 // us to pass the NULL as the initiating class loader. | |
| 3978 klassOop klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); | |
|
878
abe076e3636f
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875
diff
changeset
|
3979 |
| 0 | 3980 KlassHandle klass_handle(THREAD, klass); |
| 3981 // Check if we should initialize the class | |
| 3982 if (init && klass_handle->oop_is_instance()) { | |
| 3983 klass_handle->initialize(CHECK_NULL); | |
| 3984 } | |
| 3985 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
| 3986 } | |
| 3987 | |
| 3988 | |
| 3989 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
| 3990 | |
| 3991 #ifndef PRODUCT | |
| 3992 | |
| 3993 extern "C" { | |
| 3994 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
| 3995 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
| 3996 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
| 3997 } | |
| 3998 | |
| 3999 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
| 4000 JVMWrapper("JVM_AccessBoolVMFlag"); | |
| 4001 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, INTERNAL); | |
| 4002 JVM_END | |
| 4003 | |
| 4004 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
| 4005 JVMWrapper("JVM_AccessVMIntFlag"); | |
| 4006 intx v; | |
| 4007 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, INTERNAL); | |
| 4008 *value = (jint)v; | |
| 4009 return result; | |
| 4010 JVM_END | |
| 4011 | |
| 4012 | |
| 4013 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
| 4014 JVMWrapper("JVM_VMBreakPoint"); | |
| 4015 oop the_obj = JNIHandles::resolve(obj); | |
| 4016 BREAKPOINT; | |
| 4017 JVM_END | |
| 4018 | |
| 4019 | |
| 4020 #endif | |
| 4021 | |
| 4022 | |
| 4023 //--------------------------------------------------------------------------- | |
| 4024 // | |
| 4025 // Support for old native code-based reflection (pre-JDK 1.4) | |
| 4026 // Disabled by default in the product build. | |
| 4027 // | |
| 4028 // See reflection.hpp for information on SUPPORT_OLD_REFLECTION | |
| 4029 // | |
| 4030 //--------------------------------------------------------------------------- | |
| 4031 | |
| 4032 #ifdef SUPPORT_OLD_REFLECTION | |
| 4033 | |
| 4034 JVM_ENTRY(jobjectArray, JVM_GetClassFields(JNIEnv *env, jclass cls, jint which)) | |
| 4035 JVMWrapper("JVM_GetClassFields"); | |
| 4036 JvmtiVMObjectAllocEventCollector oam; | |
| 4037 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 4038 objArrayOop result = Reflection::reflect_fields(mirror, which, CHECK_NULL); | |
| 4039 return (jobjectArray) JNIHandles::make_local(env, result); | |
| 4040 JVM_END | |
| 4041 | |
| 4042 | |
| 4043 JVM_ENTRY(jobjectArray, JVM_GetClassMethods(JNIEnv *env, jclass cls, jint which)) | |
| 4044 JVMWrapper("JVM_GetClassMethods"); | |
| 4045 JvmtiVMObjectAllocEventCollector oam; | |
| 4046 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 4047 objArrayOop result = Reflection::reflect_methods(mirror, which, CHECK_NULL); | |
| 4048 //%note jvm_r4 | |
| 4049 return (jobjectArray) JNIHandles::make_local(env, result); | |
| 4050 JVM_END | |
| 4051 | |
| 4052 | |
| 4053 JVM_ENTRY(jobjectArray, JVM_GetClassConstructors(JNIEnv *env, jclass cls, jint which)) | |
| 4054 JVMWrapper("JVM_GetClassConstructors"); | |
| 4055 JvmtiVMObjectAllocEventCollector oam; | |
| 4056 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 4057 objArrayOop result = Reflection::reflect_constructors(mirror, which, CHECK_NULL); | |
| 4058 //%note jvm_r4 | |
| 4059 return (jobjectArray) JNIHandles::make_local(env, result); | |
| 4060 JVM_END | |
| 4061 | |
| 4062 | |
| 4063 JVM_ENTRY(jobject, JVM_GetClassField(JNIEnv *env, jclass cls, jstring name, jint which)) | |
| 4064 JVMWrapper("JVM_GetClassField"); | |
| 4065 JvmtiVMObjectAllocEventCollector oam; | |
| 4066 if (name == NULL) return NULL; | |
| 4067 Handle str (THREAD, JNIHandles::resolve_non_null(name)); | |
| 4068 | |
| 4069 const char* cstr = java_lang_String::as_utf8_string(str()); | |
|
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2162
diff
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|
4070 TempNewSymbol field_name = SymbolTable::probe(cstr, (int)strlen(cstr)); |
|
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2162
diff
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|
4071 if (field_name == NULL) { |
| 0 | 4072 THROW_0(vmSymbols::java_lang_NoSuchFieldException()); |
| 4073 } | |
| 4074 | |
| 4075 oop mirror = JNIHandles::resolve_non_null(cls); | |
|
2177
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2162
diff
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|
4076 oop result = Reflection::reflect_field(mirror, field_name, which, CHECK_NULL); |
| 0 | 4077 if (result == NULL) { |
| 4078 THROW_0(vmSymbols::java_lang_NoSuchFieldException()); | |
| 4079 } | |
| 4080 return JNIHandles::make_local(env, result); | |
| 4081 JVM_END | |
| 4082 | |
| 4083 | |
| 4084 JVM_ENTRY(jobject, JVM_GetClassMethod(JNIEnv *env, jclass cls, jstring name, jobjectArray types, jint which)) | |
| 4085 JVMWrapper("JVM_GetClassMethod"); | |
| 4086 JvmtiVMObjectAllocEventCollector oam; | |
| 4087 if (name == NULL) { | |
| 4088 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 4089 } | |
| 4090 Handle str (THREAD, JNIHandles::resolve_non_null(name)); | |
| 4091 | |
| 4092 const char* cstr = java_lang_String::as_utf8_string(str()); | |
|
2177
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diff
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|
4093 TempNewSymbol method_name = SymbolTable::probe(cstr, (int)strlen(cstr)); |
|
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2162
diff
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|
4094 if (method_name == NULL) { |
| 0 | 4095 THROW_0(vmSymbols::java_lang_NoSuchMethodException()); |
| 4096 } | |
| 4097 | |
| 4098 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 4099 objArrayHandle tarray (THREAD, objArrayOop(JNIHandles::resolve(types))); | |
| 4100 oop result = Reflection::reflect_method(mirror, method_name, tarray, | |
| 4101 which, CHECK_NULL); | |
| 4102 if (result == NULL) { | |
| 4103 THROW_0(vmSymbols::java_lang_NoSuchMethodException()); | |
| 4104 } | |
| 4105 return JNIHandles::make_local(env, result); | |
| 4106 JVM_END | |
| 4107 | |
| 4108 | |
| 4109 JVM_ENTRY(jobject, JVM_GetClassConstructor(JNIEnv *env, jclass cls, jobjectArray types, jint which)) | |
| 4110 JVMWrapper("JVM_GetClassConstructor"); | |
| 4111 JvmtiVMObjectAllocEventCollector oam; | |
| 4112 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 4113 objArrayHandle tarray (THREAD, objArrayOop(JNIHandles::resolve(types))); | |
| 4114 oop result = Reflection::reflect_constructor(mirror, tarray, which, CHECK_NULL); | |
| 4115 if (result == NULL) { | |
| 4116 THROW_0(vmSymbols::java_lang_NoSuchMethodException()); | |
| 4117 } | |
| 4118 return (jobject) JNIHandles::make_local(env, result); | |
| 4119 JVM_END | |
| 4120 | |
| 4121 | |
| 4122 // Instantiation /////////////////////////////////////////////////////////////////////////////// | |
| 4123 | |
| 4124 JVM_ENTRY(jobject, JVM_NewInstance(JNIEnv *env, jclass cls)) | |
| 4125 JVMWrapper("JVM_NewInstance"); | |
| 4126 Handle mirror(THREAD, JNIHandles::resolve_non_null(cls)); | |
| 4127 | |
| 4128 methodOop resolved_constructor = java_lang_Class::resolved_constructor(mirror()); | |
| 4129 if (resolved_constructor == NULL) { | |
| 4130 klassOop k = java_lang_Class::as_klassOop(mirror()); | |
| 4131 // The java.lang.Class object caches a resolved constructor if all the checks | |
| 4132 // below were done successfully and a constructor was found. | |
| 4133 | |
| 4134 // Do class based checks | |
| 4135 if (java_lang_Class::is_primitive(mirror())) { | |
| 4136 const char* msg = ""; | |
| 4137 if (mirror == Universe::bool_mirror()) msg = "java/lang/Boolean"; | |
| 4138 else if (mirror == Universe::char_mirror()) msg = "java/lang/Character"; | |
| 4139 else if (mirror == Universe::float_mirror()) msg = "java/lang/Float"; | |
| 4140 else if (mirror == Universe::double_mirror()) msg = "java/lang/Double"; | |
| 4141 else if (mirror == Universe::byte_mirror()) msg = "java/lang/Byte"; | |
| 4142 else if (mirror == Universe::short_mirror()) msg = "java/lang/Short"; | |
| 4143 else if (mirror == Universe::int_mirror()) msg = "java/lang/Integer"; | |
| 4144 else if (mirror == Universe::long_mirror()) msg = "java/lang/Long"; | |
| 4145 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), msg); | |
| 4146 } | |
| 4147 | |
| 4148 // Check whether we are allowed to instantiate this class | |
| 4149 Klass::cast(k)->check_valid_for_instantiation(false, CHECK_NULL); // Array classes get caught here | |
| 4150 instanceKlassHandle klass(THREAD, k); | |
| 4151 // Make sure class is initialized (also so all methods are rewritten) | |
| 4152 klass->initialize(CHECK_NULL); | |
| 4153 | |
| 4154 // Lookup default constructor | |
| 4155 resolved_constructor = klass->find_method(vmSymbols::object_initializer_name(), vmSymbols::void_method_signature()); | |
| 4156 if (resolved_constructor == NULL) { | |
| 4157 ResourceMark rm(THREAD); | |
| 4158 THROW_MSG_0(vmSymbols::java_lang_InstantiationException(), klass->external_name()); | |
| 4159 } | |
| 4160 | |
| 4161 // Cache result in java.lang.Class object. Does not have to be MT safe. | |
| 4162 java_lang_Class::set_resolved_constructor(mirror(), resolved_constructor); | |
| 4163 } | |
| 4164 | |
| 4165 assert(resolved_constructor != NULL, "sanity check"); | |
| 4166 methodHandle constructor = methodHandle(THREAD, resolved_constructor); | |
| 4167 | |
| 4168 // We have an initialized instanceKlass with a default constructor | |
| 4169 instanceKlassHandle klass(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls))); | |
| 4170 assert(klass->is_initialized() || klass->is_being_initialized(), "sanity check"); | |
| 4171 | |
| 4172 // Do security check | |
| 4173 klassOop caller_klass = NULL; | |
| 4174 if (UsePrivilegedStack) { | |
| 4175 caller_klass = thread->security_get_caller_class(2); | |
| 4176 | |
| 4177 if (!Reflection::verify_class_access(caller_klass, klass(), false) || | |
| 4178 !Reflection::verify_field_access(caller_klass, | |
| 4179 klass(), | |
| 4180 klass(), | |
| 4181 constructor->access_flags(), | |
| 4182 false, | |
| 4183 true)) { | |
| 4184 ResourceMark rm(THREAD); | |
| 4185 THROW_MSG_0(vmSymbols::java_lang_IllegalAccessException(), klass->external_name()); | |
| 4186 } | |
| 4187 } | |
| 4188 | |
| 4189 // Allocate object and call constructor | |
| 4190 Handle receiver = klass->allocate_instance_handle(CHECK_NULL); | |
| 4191 JavaCalls::call_default_constructor(thread, constructor, receiver, CHECK_NULL); | |
| 4192 | |
| 4193 jobject res = JNIHandles::make_local(env, receiver()); | |
| 4194 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4195 JvmtiExport::post_vm_object_alloc(JavaThread::current(), receiver()); | |
| 4196 } | |
| 4197 return res; | |
| 4198 JVM_END | |
| 4199 | |
| 4200 | |
| 4201 // Field //////////////////////////////////////////////////////////////////////////////////////////// | |
| 4202 | |
| 4203 JVM_ENTRY(jobject, JVM_GetField(JNIEnv *env, jobject field, jobject obj)) | |
| 4204 JVMWrapper("JVM_GetField"); | |
| 4205 JvmtiVMObjectAllocEventCollector oam; | |
| 4206 Handle field_mirror(thread, JNIHandles::resolve(field)); | |
| 4207 Handle receiver (thread, JNIHandles::resolve(obj)); | |
| 4208 fieldDescriptor fd; | |
| 4209 Reflection::resolve_field(field_mirror, receiver, &fd, false, CHECK_NULL); | |
| 4210 jvalue value; | |
| 4211 BasicType type = Reflection::field_get(&value, &fd, receiver); | |
| 4212 oop box = Reflection::box(&value, type, CHECK_NULL); | |
| 4213 return JNIHandles::make_local(env, box); | |
| 4214 JVM_END | |
| 4215 | |
| 4216 | |
| 4217 JVM_ENTRY(jvalue, JVM_GetPrimitiveField(JNIEnv *env, jobject field, jobject obj, unsigned char wCode)) | |
| 4218 JVMWrapper("JVM_GetPrimitiveField"); | |
| 4219 Handle field_mirror(thread, JNIHandles::resolve(field)); | |
| 4220 Handle receiver (thread, JNIHandles::resolve(obj)); | |
| 4221 fieldDescriptor fd; | |
| 4222 jvalue value; | |
| 4223 value.j = 0; | |
| 4224 Reflection::resolve_field(field_mirror, receiver, &fd, false, CHECK_(value)); | |
| 4225 BasicType type = Reflection::field_get(&value, &fd, receiver); | |
| 4226 BasicType wide_type = (BasicType) wCode; | |
| 4227 if (type != wide_type) { | |
| 4228 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
| 4229 } | |
| 4230 return value; | |
| 4231 JVM_END // should really be JVM_END, but that doesn't work for union types! | |
| 4232 | |
| 4233 | |
| 4234 JVM_ENTRY(void, JVM_SetField(JNIEnv *env, jobject field, jobject obj, jobject val)) | |
| 4235 JVMWrapper("JVM_SetField"); | |
| 4236 Handle field_mirror(thread, JNIHandles::resolve(field)); | |
| 4237 Handle receiver (thread, JNIHandles::resolve(obj)); | |
| 4238 oop box = JNIHandles::resolve(val); | |
| 4239 fieldDescriptor fd; | |
| 4240 Reflection::resolve_field(field_mirror, receiver, &fd, true, CHECK); | |
| 4241 BasicType field_type = fd.field_type(); | |
| 4242 jvalue value; | |
| 4243 BasicType value_type; | |
| 4244 if (field_type == T_OBJECT || field_type == T_ARRAY) { | |
| 4245 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
| 4246 value_type = Reflection::unbox_for_regular_object(box, &value); | |
| 4247 Reflection::field_set(&value, &fd, receiver, field_type, CHECK); | |
| 4248 } else { | |
| 4249 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
| 4250 Reflection::field_set(&value, &fd, receiver, value_type, CHECK); | |
| 4251 } | |
| 4252 JVM_END | |
| 4253 | |
| 4254 | |
| 4255 JVM_ENTRY(void, JVM_SetPrimitiveField(JNIEnv *env, jobject field, jobject obj, jvalue v, unsigned char vCode)) | |
| 4256 JVMWrapper("JVM_SetPrimitiveField"); | |
| 4257 Handle field_mirror(thread, JNIHandles::resolve(field)); | |
| 4258 Handle receiver (thread, JNIHandles::resolve(obj)); | |
| 4259 fieldDescriptor fd; | |
| 4260 Reflection::resolve_field(field_mirror, receiver, &fd, true, CHECK); | |
| 4261 BasicType value_type = (BasicType) vCode; | |
| 4262 Reflection::field_set(&v, &fd, receiver, value_type, CHECK); | |
| 4263 JVM_END | |
| 4264 | |
| 4265 | |
| 4266 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4267 | |
| 4268 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
| 4269 JVMWrapper("JVM_InvokeMethod"); | |
| 4270 Handle method_handle; | |
| 4271 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
| 4272 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
| 4273 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
| 4274 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4275 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
| 4276 jobject res = JNIHandles::make_local(env, result); | |
| 4277 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4278 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
| 4279 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
| 4280 if (java_lang_Class::is_primitive(ret_type)) { | |
| 4281 // Only for primitive type vm allocates memory for java object. | |
| 4282 // See box() method. | |
| 4283 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4284 } | |
| 4285 } | |
| 4286 return res; | |
| 4287 } else { | |
| 4288 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
| 4289 } | |
| 4290 JVM_END | |
| 4291 | |
| 4292 | |
| 4293 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
| 4294 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
| 4295 oop constructor_mirror = JNIHandles::resolve(c); | |
| 4296 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4297 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
| 4298 jobject res = JNIHandles::make_local(env, result); | |
| 4299 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4300 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4301 } | |
| 4302 return res; | |
| 4303 JVM_END | |
| 4304 | |
| 4305 #endif /* SUPPORT_OLD_REFLECTION */ | |
| 4306 | |
| 4307 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4308 | |
| 4309 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
| 4310 JVMWrapper("JVM_SupportsCX8"); | |
| 4311 return VM_Version::supports_cx8(); | |
| 4312 JVM_END | |
| 4313 | |
| 4314 | |
| 4315 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
| 4316 JVMWrapper("JVM_CX8Field"); | |
| 4317 jlong res; | |
| 4318 oop o = JNIHandles::resolve(obj); | |
| 4319 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 4320 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
| 4321 | |
| 4322 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
| 4323 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
| 4324 | |
| 4325 return res == oldVal; | |
| 4326 JVM_END | |
| 4327 | |
|
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4328 // DTrace /////////////////////////////////////////////////////////////////// |
|
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4329 |
|
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|
4330 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
|
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4331 JVMWrapper("JVM_DTraceGetVersion"); |
|
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4332 return (jint)JVM_TRACING_DTRACE_VERSION; |
|
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4333 JVM_END |
|
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|
4334 |
|
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|
4335 JVM_ENTRY(jlong,JVM_DTraceActivate( |
|
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4336 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
|
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|
4337 JVM_DTraceProvider* providers)) |
|
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|
4338 JVMWrapper("JVM_DTraceActivate"); |
|
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|
4339 return DTraceJSDT::activate( |
|
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|
4340 version, module_name, providers_count, providers, CHECK_0); |
|
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|
4341 JVM_END |
|
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|
4342 |
|
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|
4343 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
|
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|
4344 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
|
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|
4345 return DTraceJSDT::is_probe_enabled(method); |
|
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4346 JVM_END |
|
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|
4347 |
|
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|
4348 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
|
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4349 JVMWrapper("JVM_DTraceDispose"); |
|
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4350 DTraceJSDT::dispose(handle); |
|
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4351 JVM_END |
|
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|
4352 |
|
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|
4353 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
|
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4354 JVMWrapper("JVM_DTraceIsSupported"); |
|
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4355 return DTraceJSDT::is_supported(); |
|
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4356 JVM_END |
|
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|
4357 |
| 0 | 4358 // Returns an array of all live Thread objects (VM internal JavaThreads, |
| 4359 // jvmti agent threads, and JNI attaching threads are skipped) | |
| 4360 // See CR 6404306 regarding JNI attaching threads | |
| 4361 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
| 4362 ResourceMark rm(THREAD); | |
| 4363 ThreadsListEnumerator tle(THREAD, false, false); | |
| 4364 JvmtiVMObjectAllocEventCollector oam; | |
| 4365 | |
| 4366 int num_threads = tle.num_threads(); | |
| 1142 | 4367 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
| 0 | 4368 objArrayHandle threads_ah(THREAD, r); |
| 4369 | |
| 4370 for (int i = 0; i < num_threads; i++) { | |
| 4371 Handle h = tle.get_threadObj(i); | |
| 4372 threads_ah->obj_at_put(i, h()); | |
| 4373 } | |
| 4374 | |
| 4375 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
| 4376 JVM_END | |
| 4377 | |
| 4378 | |
| 4379 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
| 4380 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
| 4381 // the corresponding entry in the given threads array | |
| 4382 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
| 4383 JVMWrapper("JVM_DumpThreads"); | |
| 4384 JvmtiVMObjectAllocEventCollector oam; | |
| 4385 | |
| 4386 // Check if threads is null | |
| 4387 if (threads == NULL) { | |
| 4388 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4389 } | |
| 4390 | |
| 4391 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
| 4392 objArrayHandle ah(THREAD, a); | |
| 4393 int num_threads = ah->length(); | |
| 4394 // check if threads is non-empty array | |
| 4395 if (num_threads == 0) { | |
| 4396 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
| 4397 } | |
| 4398 | |
| 4399 // check if threads is not an array of objects of Thread class | |
| 4400 klassOop k = objArrayKlass::cast(ah->klass())->element_klass(); | |
| 1142 | 4401 if (k != SystemDictionary::Thread_klass()) { |
| 0 | 4402 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
| 4403 } | |
| 4404 | |
| 4405 ResourceMark rm(THREAD); | |
| 4406 | |
| 4407 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
| 4408 for (int i = 0; i < num_threads; i++) { | |
| 4409 oop thread_obj = ah->obj_at(i); | |
| 4410 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
| 4411 thread_handle_array->append(h); | |
| 4412 } | |
| 4413 | |
| 4414 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
| 4415 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
| 4416 | |
| 4417 JVM_END | |
| 4418 | |
| 4419 // JVM monitoring and management support | |
| 4420 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
| 4421 return Management::get_jmm_interface(version); | |
| 4422 JVM_END | |
| 4423 | |
| 4424 // com.sun.tools.attach.VirtualMachine agent properties support | |
| 4425 // | |
| 4426 // Initialize the agent properties with the properties maintained in the VM | |
| 4427 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
| 4428 JVMWrapper("JVM_InitAgentProperties"); | |
| 4429 ResourceMark rm; | |
| 4430 | |
| 4431 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
| 4432 | |
| 4433 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
| 4434 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
| 4435 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
| 4436 return properties; | |
| 4437 JVM_END | |
| 4438 | |
| 4439 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
| 4440 { | |
| 4441 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
| 4442 JvmtiVMObjectAllocEventCollector oam; | |
| 4443 | |
| 4444 if (ofClass == NULL) { | |
| 4445 return NULL; | |
| 4446 } | |
| 4447 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
| 4448 // Special handling for primitive objects | |
| 4449 if (java_lang_Class::is_primitive(mirror())) { | |
| 4450 return NULL; | |
| 4451 } | |
| 4452 klassOop k = java_lang_Class::as_klassOop(mirror()); | |
| 4453 if (!Klass::cast(k)->oop_is_instance()) { | |
| 4454 return NULL; | |
| 4455 } | |
| 4456 instanceKlassHandle ik_h(THREAD, k); | |
| 4457 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
| 4458 if (encl_method_class_idx == 0) { | |
| 4459 return NULL; | |
| 4460 } | |
| 1142 | 4461 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
| 0 | 4462 objArrayHandle dest(THREAD, dest_o); |
| 4463 klassOop enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); | |
| 4464 dest->obj_at_put(0, Klass::cast(enc_k)->java_mirror()); | |
| 4465 int encl_method_method_idx = ik_h->enclosing_method_method_index(); | |
| 4466 if (encl_method_method_idx != 0) { | |
|
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|
4467 Symbol* sym = ik_h->constants()->symbol_at( |
| 0 | 4468 extract_low_short_from_int( |
| 4469 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4470 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4471 dest->obj_at_put(1, str()); | |
|
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|
4472 sym = ik_h->constants()->symbol_at( |
| 0 | 4473 extract_high_short_from_int( |
| 4474 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4475 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4476 dest->obj_at_put(2, str()); | |
| 4477 } | |
| 4478 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 4479 } | |
| 4480 JVM_END | |
| 4481 | |
| 4482 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
| 4483 jint javaThreadState)) | |
| 4484 { | |
| 4485 // If new thread states are added in future JDK and VM versions, | |
| 4486 // this should check if the JDK version is compatible with thread | |
| 4487 // states supported by the VM. Return NULL if not compatible. | |
| 4488 // | |
| 4489 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4490 // to the Java thread state that the JDK supports. | |
| 4491 // | |
| 4492 | |
| 4493 typeArrayHandle values_h; | |
| 4494 switch (javaThreadState) { | |
| 4495 case JAVA_THREAD_STATE_NEW : { | |
| 4496 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4497 values_h = typeArrayHandle(THREAD, r); | |
| 4498 values_h->int_at_put(0, java_lang_Thread::NEW); | |
| 4499 break; | |
| 4500 } | |
| 4501 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4502 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4503 values_h = typeArrayHandle(THREAD, r); | |
| 4504 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
| 4505 break; | |
| 4506 } | |
| 4507 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4508 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4509 values_h = typeArrayHandle(THREAD, r); | |
| 4510 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
| 4511 break; | |
| 4512 } | |
| 4513 case JAVA_THREAD_STATE_WAITING : { | |
| 4514 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
| 4515 values_h = typeArrayHandle(THREAD, r); | |
| 4516 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
| 4517 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
| 4518 break; | |
| 4519 } | |
| 4520 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4521 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
| 4522 values_h = typeArrayHandle(THREAD, r); | |
| 4523 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
| 4524 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
| 4525 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
| 4526 break; | |
| 4527 } | |
| 4528 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4529 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4530 values_h = typeArrayHandle(THREAD, r); | |
| 4531 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
| 4532 break; | |
| 4533 } | |
| 4534 default: | |
| 4535 // Unknown state - probably incompatible JDK version | |
| 4536 return NULL; | |
| 4537 } | |
| 4538 | |
| 4539 return (jintArray) JNIHandles::make_local(env, values_h()); | |
| 4540 } | |
| 4541 JVM_END | |
| 4542 | |
| 4543 | |
| 4544 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
| 4545 jint javaThreadState, | |
| 4546 jintArray values)) | |
| 4547 { | |
| 4548 // If new thread states are added in future JDK and VM versions, | |
| 4549 // this should check if the JDK version is compatible with thread | |
| 4550 // states supported by the VM. Return NULL if not compatible. | |
| 4551 // | |
| 4552 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4553 // to the Java thread state that the JDK supports. | |
| 4554 // | |
| 4555 | |
| 4556 ResourceMark rm; | |
| 4557 | |
| 4558 // Check if threads is null | |
| 4559 if (values == NULL) { | |
| 4560 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4561 } | |
| 4562 | |
| 4563 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
| 4564 typeArrayHandle values_h(THREAD, v); | |
| 4565 | |
| 4566 objArrayHandle names_h; | |
| 4567 switch (javaThreadState) { | |
| 4568 case JAVA_THREAD_STATE_NEW : { | |
| 4569 assert(values_h->length() == 1 && | |
| 4570 values_h->int_at(0) == java_lang_Thread::NEW, | |
| 4571 "Invalid threadStatus value"); | |
| 4572 | |
| 1142 | 4573 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4574 1, /* only 1 substate */ |
| 4575 CHECK_NULL); | |
| 4576 names_h = objArrayHandle(THREAD, r); | |
| 4577 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
| 4578 names_h->obj_at_put(0, name()); | |
| 4579 break; | |
| 4580 } | |
| 4581 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4582 assert(values_h->length() == 1 && | |
| 4583 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
| 4584 "Invalid threadStatus value"); | |
| 4585 | |
| 1142 | 4586 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4587 1, /* only 1 substate */ |
| 4588 CHECK_NULL); | |
| 4589 names_h = objArrayHandle(THREAD, r); | |
| 4590 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
| 4591 names_h->obj_at_put(0, name()); | |
| 4592 break; | |
| 4593 } | |
| 4594 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4595 assert(values_h->length() == 1 && | |
| 4596 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
| 4597 "Invalid threadStatus value"); | |
| 4598 | |
| 1142 | 4599 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4600 1, /* only 1 substate */ |
| 4601 CHECK_NULL); | |
| 4602 names_h = objArrayHandle(THREAD, r); | |
| 4603 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
| 4604 names_h->obj_at_put(0, name()); | |
| 4605 break; | |
| 4606 } | |
| 4607 case JAVA_THREAD_STATE_WAITING : { | |
| 4608 assert(values_h->length() == 2 && | |
| 4609 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
| 4610 values_h->int_at(1) == java_lang_Thread::PARKED, | |
| 4611 "Invalid threadStatus value"); | |
| 1142 | 4612 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4613 2, /* number of substates */ |
| 4614 CHECK_NULL); | |
| 4615 names_h = objArrayHandle(THREAD, r); | |
| 4616 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
| 4617 CHECK_NULL); | |
| 4618 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
| 4619 CHECK_NULL); | |
| 4620 names_h->obj_at_put(0, name0()); | |
| 4621 names_h->obj_at_put(1, name1()); | |
| 4622 break; | |
| 4623 } | |
| 4624 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4625 assert(values_h->length() == 3 && | |
| 4626 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
| 4627 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
| 4628 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
| 4629 "Invalid threadStatus value"); | |
| 1142 | 4630 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4631 3, /* number of substates */ |
| 4632 CHECK_NULL); | |
| 4633 names_h = objArrayHandle(THREAD, r); | |
| 4634 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
| 4635 CHECK_NULL); | |
| 4636 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
| 4637 CHECK_NULL); | |
| 4638 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
| 4639 CHECK_NULL); | |
| 4640 names_h->obj_at_put(0, name0()); | |
| 4641 names_h->obj_at_put(1, name1()); | |
| 4642 names_h->obj_at_put(2, name2()); | |
| 4643 break; | |
| 4644 } | |
| 4645 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4646 assert(values_h->length() == 1 && | |
| 4647 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
| 4648 "Invalid threadStatus value"); | |
| 1142 | 4649 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4650 1, /* only 1 substate */ |
| 4651 CHECK_NULL); | |
| 4652 names_h = objArrayHandle(THREAD, r); | |
| 4653 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
| 4654 names_h->obj_at_put(0, name()); | |
| 4655 break; | |
| 4656 } | |
| 4657 default: | |
| 4658 // Unknown state - probably incompatible JDK version | |
| 4659 return NULL; | |
| 4660 } | |
| 4661 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
| 4662 } | |
| 4663 JVM_END | |
| 4664 | |
| 4665 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
| 4666 { | |
| 4667 memset(info, 0, sizeof(info_size)); | |
| 4668 | |
| 4669 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
| 4670 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4671 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4672 | |
| 4673 // when we add a new capability in the jvm_version_info struct, we should also | |
| 4674 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
| 4675 // counter defined in runtimeService.cpp. | |
| 4676 info->is_attachable = AttachListener::is_attach_supported(); | |
| 4677 #ifdef KERNEL | |
| 4678 info->is_kernel_jvm = 1; // true; | |
| 4679 #else // KERNEL | |
| 4680 info->is_kernel_jvm = 0; // false; | |
| 4681 #endif // KERNEL | |
| 4682 } | |
| 4683 JVM_END |