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