Mercurial > hg > graal-compiler
annotate src/share/vm/prims/jvm.cpp @ 3938:e6b1331a51d2
7086585: make Java field injection more flexible
Reviewed-by: jrose, twisti, kvn, coleenp
| author | never |
|---|---|
| date | Sat, 10 Sep 2011 17:29:02 -0700 |
| parents | 19241ae0d839 |
| children | f08d439fab8c |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "classfile/classLoader.hpp" | |
| 27 #include "classfile/javaAssertions.hpp" | |
| 28 #include "classfile/javaClasses.hpp" | |
| 29 #include "classfile/symbolTable.hpp" | |
| 30 #include "classfile/systemDictionary.hpp" | |
| 31 #include "classfile/vmSymbols.hpp" | |
| 32 #include "gc_interface/collectedHeap.inline.hpp" | |
| 33 #include "memory/oopFactory.hpp" | |
| 34 #include "memory/universe.inline.hpp" | |
| 3938 | 35 #include "oops/fieldStreams.hpp" |
| 1972 | 36 #include "oops/instanceKlass.hpp" |
| 37 #include "oops/objArrayKlass.hpp" | |
| 38 #include "prims/jvm.h" | |
| 39 #include "prims/jvm_misc.hpp" | |
| 40 #include "prims/jvmtiExport.hpp" | |
| 41 #include "prims/jvmtiThreadState.hpp" | |
| 42 #include "prims/nativeLookup.hpp" | |
| 43 #include "prims/privilegedStack.hpp" | |
| 44 #include "runtime/arguments.hpp" | |
| 45 #include "runtime/dtraceJSDT.hpp" | |
| 46 #include "runtime/handles.inline.hpp" | |
| 47 #include "runtime/init.hpp" | |
| 48 #include "runtime/interfaceSupport.hpp" | |
| 49 #include "runtime/java.hpp" | |
| 50 #include "runtime/javaCalls.hpp" | |
| 51 #include "runtime/jfieldIDWorkaround.hpp" | |
| 52 #include "runtime/os.hpp" | |
| 53 #include "runtime/perfData.hpp" | |
| 54 #include "runtime/reflection.hpp" | |
| 55 #include "runtime/vframe.hpp" | |
| 56 #include "runtime/vm_operations.hpp" | |
| 57 #include "services/attachListener.hpp" | |
| 58 #include "services/management.hpp" | |
| 59 #include "services/threadService.hpp" | |
| 60 #include "utilities/copy.hpp" | |
| 61 #include "utilities/defaultStream.hpp" | |
| 62 #include "utilities/dtrace.hpp" | |
| 63 #include "utilities/events.hpp" | |
| 64 #include "utilities/histogram.hpp" | |
| 65 #include "utilities/top.hpp" | |
| 66 #include "utilities/utf8.hpp" | |
| 67 #ifdef TARGET_OS_FAMILY_linux | |
| 68 # include "jvm_linux.h" | |
| 69 #endif | |
| 70 #ifdef TARGET_OS_FAMILY_solaris | |
| 71 # include "jvm_solaris.h" | |
| 72 #endif | |
| 73 #ifdef TARGET_OS_FAMILY_windows | |
| 74 # include "jvm_windows.h" | |
| 75 #endif | |
| 76 | |
| 0 | 77 #include <errno.h> |
| 78 | |
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79 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__begin, long long); |
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80 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__end, int); |
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81 HS_DTRACE_PROBE_DECL0(hotspot, thread__yield); |
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82 |
| 0 | 83 /* |
| 84 NOTE about use of any ctor or function call that can trigger a safepoint/GC: | |
| 85 such ctors and calls MUST NOT come between an oop declaration/init and its | |
| 86 usage because if objects are move this may cause various memory stomps, bus | |
| 87 errors and segfaults. Here is a cookbook for causing so called "naked oop | |
| 88 failures": | |
| 89 | |
| 90 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> { | |
| 91 JVMWrapper("JVM_GetClassDeclaredFields"); | |
| 92 | |
| 93 // Object address to be held directly in mirror & not visible to GC | |
| 94 oop mirror = JNIHandles::resolve_non_null(ofClass); | |
| 95 | |
| 96 // If this ctor can hit a safepoint, moving objects around, then | |
| 97 ComplexConstructor foo; | |
| 98 | |
| 99 // Boom! mirror may point to JUNK instead of the intended object | |
| 100 (some dereference of mirror) | |
| 101 | |
| 102 // Here's another call that may block for GC, making mirror stale | |
| 103 MutexLocker ml(some_lock); | |
| 104 | |
| 105 // And here's an initializer that can result in a stale oop | |
| 106 // all in one step. | |
| 107 oop o = call_that_can_throw_exception(TRAPS); | |
| 108 | |
| 109 | |
| 110 The solution is to keep the oop declaration BELOW the ctor or function | |
| 111 call that might cause a GC, do another resolve to reassign the oop, or | |
| 112 consider use of a Handle instead of an oop so there is immunity from object | |
| 113 motion. But note that the "QUICK" entries below do not have a handlemark | |
| 114 and thus can only support use of handles passed in. | |
| 115 */ | |
| 116 | |
| 117 static void trace_class_resolution_impl(klassOop to_class, TRAPS) { | |
| 118 ResourceMark rm; | |
| 119 int line_number = -1; | |
| 120 const char * source_file = NULL; | |
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121 const char * trace = "explicit"; |
| 0 | 122 klassOop caller = NULL; |
| 123 JavaThread* jthread = JavaThread::current(); | |
| 124 if (jthread->has_last_Java_frame()) { | |
| 125 vframeStream vfst(jthread); | |
| 126 | |
| 127 // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames | |
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128 TempNewSymbol access_controller = SymbolTable::new_symbol("java/security/AccessController", CHECK); |
| 0 | 129 klassOop access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); |
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130 TempNewSymbol privileged_action = SymbolTable::new_symbol("java/security/PrivilegedAction", CHECK); |
| 0 | 131 klassOop privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); |
| 132 | |
| 133 methodOop last_caller = NULL; | |
| 134 | |
| 135 while (!vfst.at_end()) { | |
| 136 methodOop m = vfst.method(); | |
| 1142 | 137 if (!vfst.method()->method_holder()->klass_part()->is_subclass_of(SystemDictionary::ClassLoader_klass())&& |
| 0 | 138 !vfst.method()->method_holder()->klass_part()->is_subclass_of(access_controller_klass) && |
| 139 !vfst.method()->method_holder()->klass_part()->is_subclass_of(privileged_action_klass)) { | |
| 140 break; | |
| 141 } | |
| 142 last_caller = m; | |
| 143 vfst.next(); | |
| 144 } | |
| 145 // if this is called from Class.forName0 and that is called from Class.forName, | |
| 146 // then print the caller of Class.forName. If this is Class.loadClass, then print | |
| 147 // that caller, otherwise keep quiet since this should be picked up elsewhere. | |
| 148 bool found_it = false; | |
| 149 if (!vfst.at_end() && | |
| 150 instanceKlass::cast(vfst.method()->method_holder())->name() == vmSymbols::java_lang_Class() && | |
| 151 vfst.method()->name() == vmSymbols::forName0_name()) { | |
| 152 vfst.next(); | |
| 153 if (!vfst.at_end() && | |
| 154 instanceKlass::cast(vfst.method()->method_holder())->name() == vmSymbols::java_lang_Class() && | |
| 155 vfst.method()->name() == vmSymbols::forName_name()) { | |
| 156 vfst.next(); | |
| 157 found_it = true; | |
| 158 } | |
| 159 } else if (last_caller != NULL && | |
| 160 instanceKlass::cast(last_caller->method_holder())->name() == | |
| 161 vmSymbols::java_lang_ClassLoader() && | |
| 162 (last_caller->name() == vmSymbols::loadClassInternal_name() || | |
| 163 last_caller->name() == vmSymbols::loadClass_name())) { | |
| 164 found_it = true; | |
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165 } else if (!vfst.at_end()) { |
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166 if (vfst.method()->is_native()) { |
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167 // JNI call |
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168 found_it = true; |
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169 } |
| 0 | 170 } |
| 171 if (found_it && !vfst.at_end()) { | |
| 172 // found the caller | |
| 173 caller = vfst.method()->method_holder(); | |
| 174 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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175 if (line_number == -1) { |
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176 // show method name if it's a native method |
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177 trace = vfst.method()->name_and_sig_as_C_string(); |
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178 } |
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179 Symbol* s = instanceKlass::cast(caller)->source_file_name(); |
| 0 | 180 if (s != NULL) { |
| 181 source_file = s->as_C_string(); | |
| 182 } | |
| 183 } | |
| 184 } | |
| 185 if (caller != NULL) { | |
| 186 if (to_class != caller) { | |
| 187 const char * from = Klass::cast(caller)->external_name(); | |
| 188 const char * to = Klass::cast(to_class)->external_name(); | |
| 189 // print in a single call to reduce interleaving between threads | |
| 190 if (source_file != NULL) { | |
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191 tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace); |
| 0 | 192 } else { |
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193 tty->print("RESOLVE %s %s (%s)\n", from, to, trace); |
| 0 | 194 } |
| 195 } | |
| 196 } | |
| 197 } | |
| 198 | |
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199 void trace_class_resolution(klassOop to_class) { |
| 0 | 200 EXCEPTION_MARK; |
| 201 trace_class_resolution_impl(to_class, THREAD); | |
| 202 if (HAS_PENDING_EXCEPTION) { | |
| 203 CLEAR_PENDING_EXCEPTION; | |
| 204 } | |
| 205 } | |
| 206 | |
| 207 // Wrapper to trace JVM functions | |
| 208 | |
| 209 #ifdef ASSERT | |
| 210 class JVMTraceWrapper : public StackObj { | |
| 211 public: | |
| 212 JVMTraceWrapper(const char* format, ...) { | |
| 213 if (TraceJVMCalls) { | |
| 214 va_list ap; | |
| 215 va_start(ap, format); | |
| 216 tty->print("JVM "); | |
| 217 tty->vprint_cr(format, ap); | |
| 218 va_end(ap); | |
| 219 } | |
| 220 } | |
| 221 }; | |
| 222 | |
| 223 Histogram* JVMHistogram; | |
| 224 volatile jint JVMHistogram_lock = 0; | |
| 225 | |
| 226 class JVMHistogramElement : public HistogramElement { | |
| 227 public: | |
| 228 JVMHistogramElement(const char* name); | |
| 229 }; | |
| 230 | |
| 231 JVMHistogramElement::JVMHistogramElement(const char* elementName) { | |
| 232 _name = elementName; | |
| 233 uintx count = 0; | |
| 234 | |
| 235 while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) { | |
| 236 while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) { | |
| 237 count +=1; | |
| 238 if ( (WarnOnStalledSpinLock > 0) | |
| 239 && (count % WarnOnStalledSpinLock == 0)) { | |
| 240 warning("JVMHistogram_lock seems to be stalled"); | |
| 241 } | |
| 242 } | |
| 243 } | |
| 244 | |
| 245 if(JVMHistogram == NULL) | |
| 246 JVMHistogram = new Histogram("JVM Call Counts",100); | |
| 247 | |
| 248 JVMHistogram->add_element(this); | |
| 249 Atomic::dec(&JVMHistogram_lock); | |
| 250 } | |
| 251 | |
| 252 #define JVMCountWrapper(arg) \ | |
| 253 static JVMHistogramElement* e = new JVMHistogramElement(arg); \ | |
| 254 if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen! | |
| 255 | |
| 256 #define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) | |
| 257 #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) | |
| 258 #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) | |
| 259 #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) | |
| 260 #else | |
| 261 #define JVMWrapper(arg1) | |
| 262 #define JVMWrapper2(arg1, arg2) | |
| 263 #define JVMWrapper3(arg1, arg2, arg3) | |
| 264 #define JVMWrapper4(arg1, arg2, arg3, arg4) | |
| 265 #endif | |
| 266 | |
| 267 | |
| 268 // Interface version ///////////////////////////////////////////////////////////////////// | |
| 269 | |
| 270 | |
| 271 JVM_LEAF(jint, JVM_GetInterfaceVersion()) | |
| 272 return JVM_INTERFACE_VERSION; | |
| 273 JVM_END | |
| 274 | |
| 275 | |
| 276 // java.lang.System ////////////////////////////////////////////////////////////////////// | |
| 277 | |
| 278 | |
| 279 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored)) | |
| 280 JVMWrapper("JVM_CurrentTimeMillis"); | |
| 281 return os::javaTimeMillis(); | |
| 282 JVM_END | |
| 283 | |
| 284 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored)) | |
| 285 JVMWrapper("JVM_NanoTime"); | |
| 286 return os::javaTimeNanos(); | |
| 287 JVM_END | |
| 288 | |
| 289 | |
| 290 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, | |
| 291 jobject dst, jint dst_pos, jint length)) | |
| 292 JVMWrapper("JVM_ArrayCopy"); | |
| 293 // Check if we have null pointers | |
| 294 if (src == NULL || dst == NULL) { | |
| 295 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 296 } | |
| 297 arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); | |
| 298 arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); | |
| 299 assert(s->is_oop(), "JVM_ArrayCopy: src not an oop"); | |
| 300 assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); | |
| 301 // Do copy | |
| 302 Klass::cast(s->klass())->copy_array(s, src_pos, d, dst_pos, length, thread); | |
| 303 JVM_END | |
| 304 | |
| 305 | |
| 306 static void set_property(Handle props, const char* key, const char* value, TRAPS) { | |
| 307 JavaValue r(T_OBJECT); | |
| 308 // public synchronized Object put(Object key, Object value); | |
| 309 HandleMark hm(THREAD); | |
| 310 Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK); | |
| 311 Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK); | |
| 312 JavaCalls::call_virtual(&r, | |
| 313 props, | |
| 1142 | 314 KlassHandle(THREAD, SystemDictionary::Properties_klass()), |
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315 vmSymbols::put_name(), |
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316 vmSymbols::object_object_object_signature(), |
| 0 | 317 key_str, |
| 318 value_str, | |
| 319 THREAD); | |
| 320 } | |
| 321 | |
| 322 | |
| 323 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties)); | |
| 324 | |
| 325 | |
| 326 JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties)) | |
| 327 JVMWrapper("JVM_InitProperties"); | |
| 328 ResourceMark rm; | |
| 329 | |
| 330 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
| 331 | |
| 332 // System property list includes both user set via -D option and | |
| 333 // jvm system specific properties. | |
| 334 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
| 335 PUTPROP(props, p->key(), p->value()); | |
| 336 } | |
| 337 | |
| 338 // Convert the -XX:MaxDirectMemorySize= command line flag | |
| 339 // to the sun.nio.MaxDirectMemorySize property. | |
| 340 // Do this after setting user properties to prevent people | |
| 341 // from setting the value with a -D option, as requested. | |
| 342 { | |
| 343 char as_chars[256]; | |
| 344 jio_snprintf(as_chars, sizeof(as_chars), INTX_FORMAT, MaxDirectMemorySize); | |
| 345 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); | |
| 346 } | |
| 347 | |
| 348 // JVM monitoring and management support | |
| 349 // Add the sun.management.compiler property for the compiler's name | |
| 350 { | |
| 351 #undef CSIZE | |
| 352 #if defined(_LP64) || defined(_WIN64) | |
| 353 #define CSIZE "64-Bit " | |
| 354 #else | |
| 355 #define CSIZE | |
| 356 #endif // 64bit | |
| 357 | |
| 358 #ifdef TIERED | |
| 359 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; | |
| 360 #else | |
| 361 #if defined(COMPILER1) | |
| 362 const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; | |
| 363 #elif defined(COMPILER2) | |
| 364 const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; | |
| 365 #else | |
| 366 const char* compiler_name = ""; | |
| 367 #endif // compilers | |
| 368 #endif // TIERED | |
| 369 | |
| 370 if (*compiler_name != '\0' && | |
| 371 (Arguments::mode() != Arguments::_int)) { | |
| 372 PUTPROP(props, "sun.management.compiler", compiler_name); | |
| 373 } | |
| 374 } | |
| 375 | |
| 376 return properties; | |
| 377 JVM_END | |
| 378 | |
| 379 | |
| 380 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// | |
| 381 | |
| 382 extern volatile jint vm_created; | |
| 383 | |
| 384 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
| 385 if (vm_created != 0 && (code == 0)) { | |
| 386 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
| 387 Universe::run_finalizers_on_exit(); | |
| 388 } | |
| 389 before_exit(thread); | |
| 390 vm_exit(code); | |
| 391 JVM_END | |
| 392 | |
| 393 | |
| 394 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
| 395 before_exit(thread); | |
| 396 vm_exit(code); | |
| 397 JVM_END | |
| 398 | |
| 399 | |
| 400 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
| 401 register_on_exit_function(func); | |
| 402 JVM_END | |
| 403 | |
| 404 | |
| 405 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
| 406 JVMWrapper("JVM_GC"); | |
| 407 if (!DisableExplicitGC) { | |
| 408 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
| 409 } | |
| 410 JVM_END | |
| 411 | |
| 412 | |
| 413 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
| 414 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
| 415 return Universe::heap()->millis_since_last_gc(); | |
| 416 JVM_END | |
| 417 | |
| 418 | |
| 419 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
| 420 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
| 421 JVM_END | |
| 422 | |
| 423 | |
| 424 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
| 425 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
| 426 JVM_END | |
| 427 | |
| 428 static inline jlong convert_size_t_to_jlong(size_t val) { | |
| 429 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
| 430 NOT_LP64 (return (jlong)val;) | |
| 431 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
| 432 } | |
| 433 | |
| 434 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
| 435 JVMWrapper("JVM_TotalMemory"); | |
| 436 size_t n = Universe::heap()->capacity(); | |
| 437 return convert_size_t_to_jlong(n); | |
| 438 JVM_END | |
| 439 | |
| 440 | |
| 441 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
| 442 JVMWrapper("JVM_FreeMemory"); | |
| 443 CollectedHeap* ch = Universe::heap(); | |
|
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444 size_t n; |
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445 { |
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446 MutexLocker x(Heap_lock); |
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447 n = ch->capacity() - ch->used(); |
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448 } |
| 0 | 449 return convert_size_t_to_jlong(n); |
| 450 JVM_END | |
| 451 | |
| 452 | |
| 453 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
| 454 JVMWrapper("JVM_MaxMemory"); | |
| 455 size_t n = Universe::heap()->max_capacity(); | |
| 456 return convert_size_t_to_jlong(n); | |
| 457 JVM_END | |
| 458 | |
| 459 | |
| 460 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
| 461 JVMWrapper("JVM_ActiveProcessorCount"); | |
| 462 return os::active_processor_count(); | |
| 463 JVM_END | |
| 464 | |
| 465 | |
| 466 | |
| 467 // java.lang.Throwable ////////////////////////////////////////////////////// | |
| 468 | |
| 469 | |
| 470 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
| 471 JVMWrapper("JVM_FillInStackTrace"); | |
| 472 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
| 473 java_lang_Throwable::fill_in_stack_trace(exception); | |
| 474 JVM_END | |
| 475 | |
| 476 | |
| 477 JVM_ENTRY(void, JVM_PrintStackTrace(JNIEnv *env, jobject receiver, jobject printable)) | |
| 478 JVMWrapper("JVM_PrintStackTrace"); | |
| 479 // Note: This is no longer used in Merlin, but we still support it for compatibility. | |
| 480 oop exception = JNIHandles::resolve_non_null(receiver); | |
| 481 oop stream = JNIHandles::resolve_non_null(printable); | |
| 482 java_lang_Throwable::print_stack_trace(exception, stream); | |
| 483 JVM_END | |
| 484 | |
| 485 | |
| 486 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
| 487 JVMWrapper("JVM_GetStackTraceDepth"); | |
| 488 oop exception = JNIHandles::resolve(throwable); | |
| 489 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
| 490 JVM_END | |
| 491 | |
| 492 | |
| 493 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
| 494 JVMWrapper("JVM_GetStackTraceElement"); | |
| 495 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
| 496 oop exception = JNIHandles::resolve(throwable); | |
| 497 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
| 498 return JNIHandles::make_local(env, element); | |
| 499 JVM_END | |
| 500 | |
| 501 | |
| 502 // java.lang.Object /////////////////////////////////////////////// | |
| 503 | |
| 504 | |
| 505 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
| 506 JVMWrapper("JVM_IHashCode"); | |
| 507 // as implemented in the classic virtual machine; return 0 if object is NULL | |
| 508 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
| 509 JVM_END | |
| 510 | |
| 511 | |
| 512 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
| 513 JVMWrapper("JVM_MonitorWait"); | |
| 514 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 515 assert(obj->is_instance() || obj->is_array(), "JVM_MonitorWait must apply to an object"); | |
| 516 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
| 517 if (JvmtiExport::should_post_monitor_wait()) { | |
| 518 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
| 519 } | |
| 520 ObjectSynchronizer::wait(obj, ms, CHECK); | |
| 521 JVM_END | |
| 522 | |
| 523 | |
| 524 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
| 525 JVMWrapper("JVM_MonitorNotify"); | |
| 526 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 527 assert(obj->is_instance() || obj->is_array(), "JVM_MonitorNotify must apply to an object"); | |
| 528 ObjectSynchronizer::notify(obj, CHECK); | |
| 529 JVM_END | |
| 530 | |
| 531 | |
| 532 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
| 533 JVMWrapper("JVM_MonitorNotifyAll"); | |
| 534 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 535 assert(obj->is_instance() || obj->is_array(), "JVM_MonitorNotifyAll must apply to an object"); | |
| 536 ObjectSynchronizer::notifyall(obj, CHECK); | |
| 537 JVM_END | |
| 538 | |
| 539 | |
| 540 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
| 541 JVMWrapper("JVM_Clone"); | |
| 542 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 543 const KlassHandle klass (THREAD, obj->klass()); | |
| 544 JvmtiVMObjectAllocEventCollector oam; | |
| 545 | |
| 546 #ifdef ASSERT | |
| 547 // Just checking that the cloneable flag is set correct | |
| 548 if (obj->is_javaArray()) { | |
| 549 guarantee(klass->is_cloneable(), "all arrays are cloneable"); | |
| 550 } else { | |
| 551 guarantee(obj->is_instance(), "should be instanceOop"); | |
| 1142 | 552 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
| 0 | 553 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
| 554 } | |
| 555 #endif | |
| 556 | |
| 557 // Check if class of obj supports the Cloneable interface. | |
| 558 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
| 559 if (!klass->is_cloneable()) { | |
| 560 ResourceMark rm(THREAD); | |
| 561 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
| 562 } | |
| 563 | |
| 564 // Make shallow object copy | |
| 565 const int size = obj->size(); | |
| 566 oop new_obj = NULL; | |
| 567 if (obj->is_javaArray()) { | |
| 568 const int length = ((arrayOop)obj())->length(); | |
| 569 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
| 570 } else { | |
| 571 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
| 572 } | |
| 573 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
| 574 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
| 575 // be suspended in the middle of copying the pointer and end up with parts | |
| 576 // of two different pointers in the field. Subsequent dereferences will crash. | |
| 577 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
| 578 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
| 579 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
| 580 // The same is true of StubRoutines::object_copy and the various oop_copy | |
| 581 // variants, and of the code generated by the inline_native_clone intrinsic. | |
| 582 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
| 583 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
| 584 (size_t)align_object_size(size) / HeapWordsPerLong); | |
| 585 // Clear the header | |
| 586 new_obj->init_mark(); | |
| 587 | |
| 588 // Store check (mark entire object and let gc sort it out) | |
| 589 BarrierSet* bs = Universe::heap()->barrier_set(); | |
| 590 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
| 591 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
| 592 | |
| 593 // Caution: this involves a java upcall, so the clone should be | |
| 594 // "gc-robust" by this stage. | |
| 595 if (klass->has_finalizer()) { | |
| 596 assert(obj->is_instance(), "should be instanceOop"); | |
| 597 new_obj = instanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); | |
| 598 } | |
| 599 | |
| 600 return JNIHandles::make_local(env, oop(new_obj)); | |
| 601 JVM_END | |
| 602 | |
| 603 // java.lang.Compiler //////////////////////////////////////////////////// | |
| 604 | |
| 605 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
| 606 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
| 607 // functions are all silently ignored unless JVM warnings are printed. | |
| 608 | |
| 609 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
| 610 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
| 611 JVM_END | |
| 612 | |
| 613 | |
| 614 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
| 615 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
| 616 return JNI_FALSE; | |
| 617 JVM_END | |
| 618 | |
| 619 | |
| 620 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
| 621 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
| 622 return JNI_FALSE; | |
| 623 JVM_END | |
| 624 | |
| 625 | |
| 626 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
| 627 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
| 628 return JNI_FALSE; | |
| 629 JVM_END | |
| 630 | |
| 631 | |
| 632 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
| 633 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
| 634 return NULL; | |
| 635 JVM_END | |
| 636 | |
| 637 | |
| 638 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
| 639 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
| 640 JVM_END | |
| 641 | |
| 642 | |
| 643 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
| 644 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
| 645 JVM_END | |
| 646 | |
| 647 | |
| 648 | |
| 649 // Error message support ////////////////////////////////////////////////////// | |
| 650 | |
| 651 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
| 652 JVMWrapper("JVM_GetLastErrorString"); | |
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653 return (jint)os::lasterror(buf, len); |
| 0 | 654 JVM_END |
| 655 | |
| 656 | |
| 657 // java.io.File /////////////////////////////////////////////////////////////// | |
| 658 | |
| 659 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
| 660 JVMWrapper2("JVM_NativePath (%s)", path); | |
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661 return os::native_path(path); |
| 0 | 662 JVM_END |
| 663 | |
| 664 | |
| 665 // Misc. class handling /////////////////////////////////////////////////////////// | |
| 666 | |
| 667 | |
| 668 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
| 669 JVMWrapper("JVM_GetCallerClass"); | |
| 670 klassOop k = thread->security_get_caller_class(depth); | |
| 671 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); | |
| 672 JVM_END | |
| 673 | |
| 674 | |
| 675 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
| 676 JVMWrapper("JVM_FindPrimitiveClass"); | |
| 677 oop mirror = NULL; | |
| 678 BasicType t = name2type(utf); | |
| 679 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
| 680 mirror = Universe::java_mirror(t); | |
| 681 } | |
| 682 if (mirror == NULL) { | |
| 683 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
| 684 } else { | |
| 685 return (jclass) JNIHandles::make_local(env, mirror); | |
| 686 } | |
| 687 JVM_END | |
| 688 | |
| 689 | |
| 690 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
| 691 JVMWrapper("JVM_ResolveClass"); | |
| 692 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
| 693 JVM_END | |
| 694 | |
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695 |
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696 // Returns a class loaded by the bootstrap class loader; or null |
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697 // if not found. ClassNotFoundException is not thrown. |
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698 // |
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699 // Rationale behind JVM_FindClassFromBootLoader |
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700 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
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701 // b> because of (a) java.dll has a direct dependecy on the unexported |
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702 // private symbol "_JVM_FindClassFromClassLoader@20". |
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703 // c> the launcher cannot use the private symbol as it dynamically opens |
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704 // the entry point, so if something changes, the launcher will fail |
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705 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
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706 // stable exported interface. |
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707 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
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708 // signature to change from _JVM_FindClassFromClassLoader@20 to |
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709 // JVM_FindClassFromClassLoader and will not be backward compatible |
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710 // with older JDKs. |
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711 // Thus a public/stable exported entry point is the right solution, |
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712 // public here means public in linker semantics, and is exported only |
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713 // to the JDK, and is not intended to be a public API. |
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714 |
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715 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
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716 const char* name)) |
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717 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
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718 |
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719 // Java libraries should ensure that name is never null... |
|
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720 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
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721 // It's impossible to create this class; the name cannot fit |
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722 // into the constant pool. |
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723 return NULL; |
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724 } |
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725 |
|
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726 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
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727 klassOop k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
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728 if (k == NULL) { |
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729 return NULL; |
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730 } |
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731 |
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732 if (TraceClassResolution) { |
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|
733 trace_class_resolution(k); |
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734 } |
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735 return (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); |
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736 JVM_END |
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737 |
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738 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
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739 jboolean init, jobject loader, |
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740 jboolean throwError)) |
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741 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
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742 throwError ? "error" : "exception"); |
| 388 | 743 // Java libraries should ensure that name is never null... |
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744 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
| 388 | 745 // It's impossible to create this class; the name cannot fit |
| 746 // into the constant pool. | |
| 747 if (throwError) { | |
| 748 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 749 } else { | |
| 750 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
| 751 } | |
| 752 } | |
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753 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
| 388 | 754 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
| 755 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 756 Handle(), throwError, THREAD); | |
| 757 | |
| 758 if (TraceClassResolution && result != NULL) { | |
| 759 trace_class_resolution(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(result))); | |
| 760 } | |
| 761 return result; | |
| 0 | 762 JVM_END |
| 763 | |
| 764 | |
| 765 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
| 766 jboolean init, jclass from)) | |
| 767 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
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768 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
| 0 | 769 // It's impossible to create this class; the name cannot fit |
| 770 // into the constant pool. | |
| 771 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 772 } | |
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773 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
| 0 | 774 oop from_class_oop = JNIHandles::resolve(from); |
| 775 klassOop from_class = (from_class_oop == NULL) | |
| 776 ? (klassOop)NULL | |
| 777 : java_lang_Class::as_klassOop(from_class_oop); | |
| 778 oop class_loader = NULL; | |
| 779 oop protection_domain = NULL; | |
| 780 if (from_class != NULL) { | |
| 781 class_loader = Klass::cast(from_class)->class_loader(); | |
| 782 protection_domain = Klass::cast(from_class)->protection_domain(); | |
| 783 } | |
| 784 Handle h_loader(THREAD, class_loader); | |
| 785 Handle h_prot (THREAD, protection_domain); | |
| 786 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 787 h_prot, true, thread); | |
| 788 | |
| 789 if (TraceClassResolution && result != NULL) { | |
| 790 // this function is generally only used for class loading during verification. | |
| 791 ResourceMark rm; | |
| 792 oop from_mirror = JNIHandles::resolve_non_null(from); | |
| 793 klassOop from_class = java_lang_Class::as_klassOop(from_mirror); | |
| 794 const char * from_name = Klass::cast(from_class)->external_name(); | |
| 795 | |
| 796 oop mirror = JNIHandles::resolve_non_null(result); | |
| 797 klassOop to_class = java_lang_Class::as_klassOop(mirror); | |
| 798 const char * to = Klass::cast(to_class)->external_name(); | |
| 799 tty->print("RESOLVE %s %s (verification)\n", from_name, to); | |
| 800 } | |
| 801 | |
| 802 return result; | |
| 803 JVM_END | |
| 804 | |
| 805 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
| 806 if (loader.is_null()) { | |
| 807 return; | |
| 808 } | |
| 809 | |
| 810 // check whether the current caller thread holds the lock or not. | |
| 811 // If not, increment the corresponding counter | |
| 812 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
| 813 ObjectSynchronizer::owner_self) { | |
| 814 counter->inc(); | |
| 815 } | |
| 816 } | |
| 817 | |
| 818 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
|
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819 // and JVM_DefineClassWithSourceCond() |
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820 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
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821 jobject loader, const jbyte *buf, |
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822 jsize len, jobject pd, const char *source, |
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823 jboolean verify, TRAPS) { |
|
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824 if (source == NULL) source = "__JVM_DefineClass__"; |
| 0 | 825 |
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826 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
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827 JavaThread* jt = (JavaThread*) THREAD; |
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828 |
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829 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
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830 ClassLoader::perf_define_appclass_selftime(), |
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831 ClassLoader::perf_define_appclasses(), |
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832 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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833 jt->get_thread_stat()->perf_timers_addr(), |
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834 PerfClassTraceTime::DEFINE_CLASS); |
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835 |
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836 if (UsePerfData) { |
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837 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
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838 } |
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839 |
| 0 | 840 // Since exceptions can be thrown, class initialization can take place |
| 841 // if name is NULL no check for class name in .class stream has to be made. | |
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842 TempNewSymbol class_name = NULL; |
| 0 | 843 if (name != NULL) { |
| 844 const int str_len = (int)strlen(name); | |
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845 if (str_len > Symbol::max_length()) { |
| 0 | 846 // It's impossible to create this class; the name cannot fit |
| 847 // into the constant pool. | |
| 848 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 849 } | |
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850 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
| 0 | 851 } |
| 852 | |
| 853 ResourceMark rm(THREAD); | |
| 854 ClassFileStream st((u1*) buf, len, (char *)source); | |
| 855 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
| 856 if (UsePerfData) { | |
| 857 is_lock_held_by_thread(class_loader, | |
| 858 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
| 859 THREAD); | |
| 860 } | |
| 861 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
| 862 klassOop k = SystemDictionary::resolve_from_stream(class_name, class_loader, | |
| 863 protection_domain, &st, | |
|
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864 verify != 0, |
| 0 | 865 CHECK_NULL); |
| 866 | |
| 867 if (TraceClassResolution && k != NULL) { | |
| 868 trace_class_resolution(k); | |
| 869 } | |
| 870 | |
| 871 return (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); | |
| 872 } | |
| 873 | |
| 874 | |
| 875 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
| 876 JVMWrapper2("JVM_DefineClass %s", name); | |
| 877 | |
|
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878 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
| 0 | 879 JVM_END |
| 880 | |
| 881 | |
| 882 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
| 883 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
| 884 | |
|
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885 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
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886 JVM_END |
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887 |
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888 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
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889 jobject loader, const jbyte *buf, |
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890 jsize len, jobject pd, |
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891 const char *source, jboolean verify)) |
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892 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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893 |
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894 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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895 JVM_END |
| 0 | 896 |
| 897 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
| 898 JVMWrapper("JVM_FindLoadedClass"); | |
| 899 ResourceMark rm(THREAD); | |
| 900 | |
| 901 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 902 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
| 903 | |
| 904 const char* str = java_lang_String::as_utf8_string(string()); | |
| 905 // Sanity check, don't expect null | |
| 906 if (str == NULL) return NULL; | |
| 907 | |
| 908 const int str_len = (int)strlen(str); | |
|
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909 if (str_len > Symbol::max_length()) { |
| 0 | 910 // It's impossible to create this class; the name cannot fit |
| 911 // into the constant pool. | |
| 912 return NULL; | |
| 913 } | |
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914 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
| 0 | 915 |
| 916 // Security Note: | |
| 917 // The Java level wrapper will perform the necessary security check allowing | |
| 918 // us to pass the NULL as the initiating class loader. | |
| 919 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
| 920 if (UsePerfData) { | |
| 921 is_lock_held_by_thread(h_loader, | |
| 922 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
| 923 THREAD); | |
| 924 } | |
| 925 | |
| 926 klassOop k = SystemDictionary::find_instance_or_array_klass(klass_name, | |
| 927 h_loader, | |
| 928 Handle(), | |
| 929 CHECK_NULL); | |
| 930 | |
| 931 return (k == NULL) ? NULL : | |
| 932 (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); | |
| 933 JVM_END | |
| 934 | |
| 935 | |
| 936 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
| 937 | |
| 938 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
| 939 assert (cls != NULL, "illegal class"); | |
| 940 JVMWrapper("JVM_GetClassName"); | |
| 941 JvmtiVMObjectAllocEventCollector oam; | |
| 942 ResourceMark rm(THREAD); | |
| 943 const char* name; | |
| 944 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 945 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
| 946 } else { | |
| 947 // Consider caching interned string in Klass | |
| 948 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
| 949 assert(k->is_klass(), "just checking"); | |
| 950 name = Klass::cast(k)->external_name(); | |
| 951 } | |
| 952 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
| 953 return (jstring) JNIHandles::make_local(env, result); | |
| 954 JVM_END | |
| 955 | |
| 956 | |
| 957 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
| 958 JVMWrapper("JVM_GetClassInterfaces"); | |
| 959 JvmtiVMObjectAllocEventCollector oam; | |
| 960 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 961 | |
| 962 // Special handling for primitive objects | |
| 963 if (java_lang_Class::is_primitive(mirror)) { | |
| 964 // Primitive objects does not have any interfaces | |
| 1142 | 965 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 966 return (jobjectArray) JNIHandles::make_local(env, r); |
| 967 } | |
| 968 | |
| 969 KlassHandle klass(thread, java_lang_Class::as_klassOop(mirror)); | |
| 970 // Figure size of result array | |
| 971 int size; | |
| 972 if (klass->oop_is_instance()) { | |
| 973 size = instanceKlass::cast(klass())->local_interfaces()->length(); | |
| 974 } else { | |
| 975 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
| 976 size = 2; | |
| 977 } | |
| 978 | |
| 979 // Allocate result array | |
| 1142 | 980 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
| 0 | 981 objArrayHandle result (THREAD, r); |
| 982 // Fill in result | |
| 983 if (klass->oop_is_instance()) { | |
| 984 // Regular instance klass, fill in all local interfaces | |
| 985 for (int index = 0; index < size; index++) { | |
| 986 klassOop k = klassOop(instanceKlass::cast(klass())->local_interfaces()->obj_at(index)); | |
| 987 result->obj_at_put(index, Klass::cast(k)->java_mirror()); | |
| 988 } | |
| 989 } else { | |
| 990 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
| 1142 | 991 result->obj_at_put(0, Klass::cast(SystemDictionary::Cloneable_klass())->java_mirror()); |
| 992 result->obj_at_put(1, Klass::cast(SystemDictionary::Serializable_klass())->java_mirror()); | |
| 0 | 993 } |
| 994 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 995 JVM_END | |
| 996 | |
| 997 | |
| 998 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
| 999 JVMWrapper("JVM_GetClassLoader"); | |
| 1000 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1001 return NULL; | |
| 1002 } | |
| 1003 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 1004 oop loader = Klass::cast(k)->class_loader(); | |
| 1005 return JNIHandles::make_local(env, loader); | |
| 1006 JVM_END | |
| 1007 | |
| 1008 | |
| 1009 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
| 1010 JVMWrapper("JVM_IsInterface"); | |
| 1011 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1012 if (java_lang_Class::is_primitive(mirror)) { | |
| 1013 return JNI_FALSE; | |
| 1014 } | |
| 1015 klassOop k = java_lang_Class::as_klassOop(mirror); | |
| 1016 jboolean result = Klass::cast(k)->is_interface(); | |
| 1017 assert(!result || Klass::cast(k)->oop_is_instance(), | |
| 1018 "all interfaces are instance types"); | |
| 1019 // The compiler intrinsic for isInterface tests the | |
| 1020 // Klass::_access_flags bits in the same way. | |
| 1021 return result; | |
| 1022 JVM_END | |
| 1023 | |
| 1024 | |
| 1025 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
| 1026 JVMWrapper("JVM_GetClassSigners"); | |
| 1027 JvmtiVMObjectAllocEventCollector oam; | |
| 1028 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1029 // There are no signers for primitive types | |
| 1030 return NULL; | |
| 1031 } | |
| 1032 | |
| 1033 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 1034 objArrayOop signers = NULL; | |
| 1035 if (Klass::cast(k)->oop_is_instance()) { | |
| 1036 signers = instanceKlass::cast(k)->signers(); | |
| 1037 } | |
| 1038 | |
| 1039 // If there are no signers set in the class, or if the class | |
| 1040 // is an array, return NULL. | |
| 1041 if (signers == NULL) return NULL; | |
| 1042 | |
| 1043 // copy of the signers array | |
| 1044 klassOop element = objArrayKlass::cast(signers->klass())->element_klass(); | |
| 1045 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); | |
| 1046 for (int index = 0; index < signers->length(); index++) { | |
| 1047 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
| 1048 } | |
| 1049 | |
| 1050 // return the copy | |
| 1051 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
| 1052 JVM_END | |
| 1053 | |
| 1054 | |
| 1055 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
| 1056 JVMWrapper("JVM_SetClassSigners"); | |
| 1057 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1058 // This call is ignored for primitive types and arrays. | |
| 1059 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
| 1060 // be called with an array. Only the bootstrap loader creates arrays. | |
| 1061 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 1062 if (Klass::cast(k)->oop_is_instance()) { | |
| 1063 instanceKlass::cast(k)->set_signers(objArrayOop(JNIHandles::resolve(signers))); | |
| 1064 } | |
| 1065 } | |
| 1066 JVM_END | |
| 1067 | |
| 1068 | |
| 1069 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
| 1070 JVMWrapper("JVM_GetProtectionDomain"); | |
| 1071 if (JNIHandles::resolve(cls) == NULL) { | |
| 1072 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
| 1073 } | |
| 1074 | |
| 1075 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1076 // Primitive types does not have a protection domain. | |
| 1077 return NULL; | |
| 1078 } | |
| 1079 | |
| 1080 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
| 1081 return (jobject) JNIHandles::make_local(env, Klass::cast(k)->protection_domain()); | |
| 1082 JVM_END | |
| 1083 | |
| 1084 | |
| 1085 // Obsolete since 1.2 (Class.setProtectionDomain removed), although | |
| 1086 // still defined in core libraries as of 1.5. | |
| 1087 JVM_ENTRY(void, JVM_SetProtectionDomain(JNIEnv *env, jclass cls, jobject protection_domain)) | |
| 1088 JVMWrapper("JVM_SetProtectionDomain"); | |
| 1089 if (JNIHandles::resolve(cls) == NULL) { | |
| 1090 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 1091 } | |
| 1092 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1093 // Call is ignored for primitive types | |
| 1094 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
| 1095 | |
| 1096 // cls won't be an array, as this called only from ClassLoader.defineClass | |
| 1097 if (Klass::cast(k)->oop_is_instance()) { | |
| 1098 oop pd = JNIHandles::resolve(protection_domain); | |
| 1099 assert(pd == NULL || pd->is_oop(), "just checking"); | |
| 1100 instanceKlass::cast(k)->set_protection_domain(pd); | |
| 1101 } | |
| 1102 } | |
| 1103 JVM_END | |
| 1104 | |
| 1105 | |
| 1106 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
| 1107 JVMWrapper("JVM_DoPrivileged"); | |
| 1108 | |
| 1109 if (action == NULL) { | |
| 1110 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
| 1111 } | |
| 1112 | |
| 1113 // Stack allocated list of privileged stack elements | |
| 1114 PrivilegedElement pi; | |
| 1115 | |
| 1116 // Check that action object understands "Object run()" | |
| 1117 Handle object (THREAD, JNIHandles::resolve(action)); | |
| 1118 | |
| 1119 // get run() method | |
| 1120 methodOop m_oop = Klass::cast(object->klass())->uncached_lookup_method( | |
| 1121 vmSymbols::run_method_name(), | |
| 1122 vmSymbols::void_object_signature()); | |
| 1123 methodHandle m (THREAD, m_oop); | |
| 1124 if (m.is_null() || !m->is_method() || !methodOop(m())->is_public() || methodOop(m())->is_static()) { | |
| 1125 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); | |
| 1126 } | |
| 1127 | |
| 1128 // Compute the frame initiating the do privileged operation and setup the privileged stack | |
| 1129 vframeStream vfst(thread); | |
| 1130 vfst.security_get_caller_frame(1); | |
| 1131 | |
| 1132 if (!vfst.at_end()) { | |
| 1133 pi.initialize(&vfst, JNIHandles::resolve(context), thread->privileged_stack_top(), CHECK_NULL); | |
| 1134 thread->set_privileged_stack_top(&pi); | |
| 1135 } | |
| 1136 | |
| 1137 | |
| 1138 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
| 1139 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
| 1140 Handle pending_exception; | |
| 1141 JavaValue result(T_OBJECT); | |
| 1142 JavaCallArguments args(object); | |
| 1143 JavaCalls::call(&result, m, &args, THREAD); | |
| 1144 | |
| 1145 // done with action, remove ourselves from the list | |
| 1146 if (!vfst.at_end()) { | |
| 1147 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
| 1148 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
| 1149 } | |
| 1150 | |
| 1151 if (HAS_PENDING_EXCEPTION) { | |
| 1152 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
| 1153 CLEAR_PENDING_EXCEPTION; | |
| 1154 | |
| 1142 | 1155 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
| 1156 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
| 0 | 1157 // Throw a java.security.PrivilegedActionException(Exception e) exception |
| 1158 JavaCallArguments args(pending_exception); | |
|
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1159 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1160 vmSymbols::exception_void_signature(), |
| 0 | 1161 &args); |
| 1162 } | |
| 1163 } | |
| 1164 | |
| 1165 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
| 1166 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
| 1167 JVM_END | |
| 1168 | |
| 1169 | |
| 1170 // Returns the inherited_access_control_context field of the running thread. | |
| 1171 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1172 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
| 1173 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
| 1174 return JNIHandles::make_local(env, result); | |
| 1175 JVM_END | |
| 1176 | |
| 1177 class RegisterArrayForGC { | |
| 1178 private: | |
| 1179 JavaThread *_thread; | |
| 1180 public: | |
| 1181 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
| 1182 _thread = thread; | |
| 1183 _thread->register_array_for_gc(array); | |
| 1184 } | |
| 1185 | |
| 1186 ~RegisterArrayForGC() { | |
| 1187 _thread->register_array_for_gc(NULL); | |
| 1188 } | |
| 1189 }; | |
| 1190 | |
| 1191 | |
| 1192 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1193 JVMWrapper("JVM_GetStackAccessControlContext"); | |
| 1194 if (!UsePrivilegedStack) return NULL; | |
| 1195 | |
| 1196 ResourceMark rm(THREAD); | |
| 1197 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
| 1198 JvmtiVMObjectAllocEventCollector oam; | |
| 1199 | |
| 1200 // count the protection domains on the execution stack. We collapse | |
| 1201 // duplicate consecutive protection domains into a single one, as | |
| 1202 // well as stopping when we hit a privileged frame. | |
| 1203 | |
| 1204 // Use vframeStream to iterate through Java frames | |
| 1205 vframeStream vfst(thread); | |
| 1206 | |
| 1207 oop previous_protection_domain = NULL; | |
| 1208 Handle privileged_context(thread, NULL); | |
| 1209 bool is_privileged = false; | |
| 1210 oop protection_domain = NULL; | |
| 1211 | |
| 1212 for(; !vfst.at_end(); vfst.next()) { | |
| 1213 // get method of frame | |
| 1214 methodOop method = vfst.method(); | |
| 1215 intptr_t* frame_id = vfst.frame_id(); | |
| 1216 | |
| 1217 // check the privileged frames to see if we have a match | |
| 1218 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
| 1219 // this frame is privileged | |
| 1220 is_privileged = true; | |
| 1221 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
| 1222 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
| 1223 } else { | |
| 1224 protection_domain = instanceKlass::cast(method->method_holder())->protection_domain(); | |
| 1225 } | |
| 1226 | |
| 1227 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
| 1228 local_array->push(protection_domain); | |
| 1229 previous_protection_domain = protection_domain; | |
| 1230 } | |
| 1231 | |
| 1232 if (is_privileged) break; | |
| 1233 } | |
| 1234 | |
| 1235 | |
| 1236 // either all the domains on the stack were system domains, or | |
| 1237 // we had a privileged system domain | |
| 1238 if (local_array->is_empty()) { | |
| 1239 if (is_privileged && privileged_context.is_null()) return NULL; | |
| 1240 | |
| 1241 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
| 1242 return JNIHandles::make_local(env, result); | |
| 1243 } | |
| 1244 | |
| 1245 // the resource area must be registered in case of a gc | |
| 1246 RegisterArrayForGC ragc(thread, local_array); | |
| 1142 | 1247 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
| 0 | 1248 local_array->length(), CHECK_NULL); |
| 1249 objArrayHandle h_context(thread, context); | |
| 1250 for (int index = 0; index < local_array->length(); index++) { | |
| 1251 h_context->obj_at_put(index, local_array->at(index)); | |
| 1252 } | |
| 1253 | |
| 1254 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
| 1255 | |
| 1256 return JNIHandles::make_local(env, result); | |
| 1257 JVM_END | |
| 1258 | |
| 1259 | |
| 1260 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
| 1261 JVMWrapper("JVM_IsArrayClass"); | |
| 1262 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 1263 return (k != NULL) && Klass::cast(k)->oop_is_javaArray() ? true : false; | |
| 1264 JVM_END | |
| 1265 | |
| 1266 | |
| 1267 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
| 1268 JVMWrapper("JVM_IsPrimitiveClass"); | |
| 1269 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1270 return (jboolean) java_lang_Class::is_primitive(mirror); | |
| 1271 JVM_END | |
| 1272 | |
| 1273 | |
| 1274 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
| 1275 JVMWrapper("JVM_GetComponentType"); | |
| 1276 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1277 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
| 1278 return (jclass) JNIHandles::make_local(env, result); | |
| 1279 JVM_END | |
| 1280 | |
| 1281 | |
| 1282 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
| 1283 JVMWrapper("JVM_GetClassModifiers"); | |
| 1284 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1285 // Primitive type | |
| 1286 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 1287 } | |
| 1288 | |
| 1289 Klass* k = Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls))); | |
| 1290 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); | |
| 1291 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
| 1292 return k->modifier_flags(); | |
| 1293 JVM_END | |
| 1294 | |
| 1295 | |
| 1296 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
| 1297 | |
| 1298 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
| 1299 const int inner_class_info_index = 0; | |
| 1300 const int outer_class_info_index = 1; | |
| 1301 | |
| 1302 JvmtiVMObjectAllocEventCollector oam; | |
| 1303 // ofClass is a reference to a java_lang_Class object. The mirror object | |
| 1304 // of an instanceKlass | |
| 1305 | |
| 1306 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 1307 ! Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_instance()) { | |
| 1142 | 1308 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1309 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1310 } | |
| 1311 | |
| 1312 instanceKlassHandle k(thread, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
| 1313 | |
| 1314 if (k->inner_classes()->length() == 0) { | |
| 1315 // Neither an inner nor outer class | |
| 1142 | 1316 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1317 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1318 } | |
| 1319 | |
| 1320 // find inner class info | |
| 1321 typeArrayHandle icls(thread, k->inner_classes()); | |
| 1322 constantPoolHandle cp(thread, k->constants()); | |
| 1323 int length = icls->length(); | |
| 1324 | |
| 1325 // Allocate temp. result array | |
| 1142 | 1326 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
| 0 | 1327 objArrayHandle result (THREAD, r); |
| 1328 int members = 0; | |
| 1329 | |
| 1330 for(int i = 0; i < length; i += 4) { | |
| 1331 int ioff = icls->ushort_at(i + inner_class_info_index); | |
| 1332 int ooff = icls->ushort_at(i + outer_class_info_index); | |
| 1333 | |
| 1334 if (ioff != 0 && ooff != 0) { | |
| 1335 // Check to see if the name matches the class we're looking for | |
| 1336 // before attempting to find the class. | |
| 1337 if (cp->klass_name_at_matches(k, ooff)) { | |
| 1338 klassOop outer_klass = cp->klass_at(ooff, CHECK_NULL); | |
| 1339 if (outer_klass == k()) { | |
| 1340 klassOop ik = cp->klass_at(ioff, CHECK_NULL); | |
| 1341 instanceKlassHandle inner_klass (THREAD, ik); | |
| 1342 | |
| 1343 // Throws an exception if outer klass has not declared k as | |
| 1344 // an inner klass | |
|
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1345 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
| 0 | 1346 |
| 1347 result->obj_at_put(members, inner_klass->java_mirror()); | |
| 1348 members++; | |
| 1349 } | |
| 1350 } | |
| 1351 } | |
| 1352 } | |
| 1353 | |
| 1354 if (members != length) { | |
| 1355 // Return array of right length | |
| 1142 | 1356 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
| 0 | 1357 for(int i = 0; i < members; i++) { |
| 1358 res->obj_at_put(i, result->obj_at(i)); | |
| 1359 } | |
| 1360 return (jobjectArray)JNIHandles::make_local(env, res); | |
| 1361 } | |
| 1362 | |
| 1363 return (jobjectArray)JNIHandles::make_local(env, result()); | |
| 1364 JVM_END | |
| 1365 | |
| 1366 | |
| 1367 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
|
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1368 { |
| 0 | 1369 // ofClass is a reference to a java_lang_Class object. |
| 1370 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 1371 ! Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_instance()) { | |
| 1372 return NULL; | |
| 1373 } | |
| 1374 | |
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1375 bool inner_is_member = false; |
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1376 klassOop outer_klass |
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1377 = instanceKlass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)) |
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1378 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
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1379 if (outer_klass == NULL) return NULL; // already a top-level class |
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1380 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
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1381 return (jclass) JNIHandles::make_local(env, Klass::cast(outer_klass)->java_mirror()); |
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1382 } |
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1383 JVM_END |
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1384 |
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1385 // should be in instanceKlass.cpp, but is here for historical reasons |
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1386 klassOop instanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
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1387 bool* inner_is_member, |
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1388 TRAPS) { |
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1389 Thread* thread = THREAD; |
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1390 const int inner_class_info_index = inner_class_inner_class_info_offset; |
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1391 const int outer_class_info_index = inner_class_outer_class_info_offset; |
| 0 | 1392 |
| 1393 if (k->inner_classes()->length() == 0) { | |
| 1394 // No inner class info => no declaring class | |
| 1395 return NULL; | |
| 1396 } | |
| 1397 | |
| 1398 typeArrayHandle i_icls(thread, k->inner_classes()); | |
| 1399 constantPoolHandle i_cp(thread, k->constants()); | |
| 1400 int i_length = i_icls->length(); | |
| 1401 | |
| 1402 bool found = false; | |
| 1403 klassOop ok; | |
| 1404 instanceKlassHandle outer_klass; | |
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1405 *inner_is_member = false; |
| 0 | 1406 |
| 1407 // Find inner_klass attribute | |
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1408 for (int i = 0; i < i_length && !found; i += inner_class_next_offset) { |
| 0 | 1409 int ioff = i_icls->ushort_at(i + inner_class_info_index); |
| 1410 int ooff = i_icls->ushort_at(i + outer_class_info_index); | |
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1411 int noff = i_icls->ushort_at(i + inner_class_inner_name_offset); |
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1412 if (ioff != 0) { |
| 0 | 1413 // Check to see if the name matches the class we're looking for |
| 1414 // before attempting to find the class. | |
| 1415 if (i_cp->klass_name_at_matches(k, ioff)) { | |
| 1416 klassOop inner_klass = i_cp->klass_at(ioff, CHECK_NULL); | |
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1417 found = (k() == inner_klass); |
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1418 if (found && ooff != 0) { |
| 0 | 1419 ok = i_cp->klass_at(ooff, CHECK_NULL); |
| 1420 outer_klass = instanceKlassHandle(thread, ok); | |
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1421 *inner_is_member = true; |
| 0 | 1422 } |
| 1423 } | |
| 1424 } | |
| 1425 } | |
| 1426 | |
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1427 if (found && outer_klass.is_null()) { |
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1428 // It may be anonymous; try for that. |
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1429 int encl_method_class_idx = k->enclosing_method_class_index(); |
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1430 if (encl_method_class_idx != 0) { |
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1431 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
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1432 outer_klass = instanceKlassHandle(thread, ok); |
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1433 *inner_is_member = false; |
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1434 } |
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1435 } |
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1436 |
| 0 | 1437 // If no inner class attribute found for this class. |
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1438 if (outer_klass.is_null()) return NULL; |
| 0 | 1439 |
| 1440 // Throws an exception if outer klass has not declared k as an inner klass | |
|
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1441 // We need evidence that each klass knows about the other, or else |
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1442 // the system could allow a spoof of an inner class to gain access rights. |
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1443 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
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1444 return outer_klass(); |
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1445 } |
| 0 | 1446 |
| 1447 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
| 1448 assert (cls != NULL, "illegal class"); | |
| 1449 JVMWrapper("JVM_GetClassSignature"); | |
| 1450 JvmtiVMObjectAllocEventCollector oam; | |
| 1451 ResourceMark rm(THREAD); | |
| 1452 // Return null for arrays and primatives | |
| 1453 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1454 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
| 1455 if (Klass::cast(k)->oop_is_instance()) { | |
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1456 Symbol* sym = instanceKlass::cast(k)->generic_signature(); |
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1457 if (sym == NULL) return NULL; |
| 0 | 1458 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 1459 return (jstring) JNIHandles::make_local(env, str()); | |
| 1460 } | |
| 1461 } | |
| 1462 return NULL; | |
| 1463 JVM_END | |
| 1464 | |
| 1465 | |
| 1466 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
| 1467 assert (cls != NULL, "illegal class"); | |
| 1468 JVMWrapper("JVM_GetClassAnnotations"); | |
| 1469 ResourceMark rm(THREAD); | |
| 1470 // Return null for arrays and primitives | |
| 1471 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1472 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
| 1473 if (Klass::cast(k)->oop_is_instance()) { | |
| 1474 return (jbyteArray) JNIHandles::make_local(env, | |
| 1475 instanceKlass::cast(k)->class_annotations()); | |
| 1476 } | |
| 1477 } | |
| 1478 return NULL; | |
| 1479 JVM_END | |
| 1480 | |
| 1481 | |
| 1482 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) | |
| 1483 assert(field != NULL, "illegal field"); | |
| 1484 JVMWrapper("JVM_GetFieldAnnotations"); | |
| 1485 | |
| 1486 // some of this code was adapted from from jni_FromReflectedField | |
| 1487 | |
| 1488 // field is a handle to a java.lang.reflect.Field object | |
| 1489 oop reflected = JNIHandles::resolve_non_null(field); | |
| 1490 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
| 1491 klassOop k = java_lang_Class::as_klassOop(mirror); | |
| 1492 int slot = java_lang_reflect_Field::slot(reflected); | |
| 1493 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
| 1494 | |
| 1495 fieldDescriptor fd; | |
| 1496 KlassHandle kh(THREAD, k); | |
| 3938 | 1497 intptr_t offset = instanceKlass::cast(kh())->field_offset(slot); |
| 0 | 1498 |
| 1499 if (modifiers & JVM_ACC_STATIC) { | |
| 1500 // for static fields we only look in the current class | |
| 1501 if (!instanceKlass::cast(kh())->find_local_field_from_offset(offset, | |
| 1502 true, &fd)) { | |
| 1503 assert(false, "cannot find static field"); | |
| 1504 return NULL; // robustness | |
| 1505 } | |
| 1506 } else { | |
| 1507 // for instance fields we start with the current class and work | |
| 1508 // our way up through the superclass chain | |
| 1509 if (!instanceKlass::cast(kh())->find_field_from_offset(offset, false, | |
| 1510 &fd)) { | |
| 1511 assert(false, "cannot find instance field"); | |
| 1512 return NULL; // robustness | |
| 1513 } | |
| 1514 } | |
| 1515 | |
| 1516 return (jbyteArray) JNIHandles::make_local(env, fd.annotations()); | |
| 1517 JVM_END | |
| 1518 | |
| 1519 | |
| 1520 static methodOop jvm_get_method_common(jobject method, TRAPS) { | |
| 1521 // some of this code was adapted from from jni_FromReflectedMethod | |
| 1522 | |
| 1523 oop reflected = JNIHandles::resolve_non_null(method); | |
| 1524 oop mirror = NULL; | |
| 1525 int slot = 0; | |
| 1526 | |
| 1142 | 1527 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
| 0 | 1528 mirror = java_lang_reflect_Constructor::clazz(reflected); |
| 1529 slot = java_lang_reflect_Constructor::slot(reflected); | |
| 1530 } else { | |
| 1142 | 1531 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
| 0 | 1532 "wrong type"); |
| 1533 mirror = java_lang_reflect_Method::clazz(reflected); | |
| 1534 slot = java_lang_reflect_Method::slot(reflected); | |
| 1535 } | |
| 1536 klassOop k = java_lang_Class::as_klassOop(mirror); | |
| 1537 | |
| 1538 KlassHandle kh(THREAD, k); | |
| 1539 methodOop m = instanceKlass::cast(kh())->method_with_idnum(slot); | |
| 1540 if (m == NULL) { | |
| 1541 assert(false, "cannot find method"); | |
| 1542 return NULL; // robustness | |
| 1543 } | |
| 1544 | |
| 1545 return m; | |
| 1546 } | |
| 1547 | |
| 1548 | |
| 1549 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
| 1550 JVMWrapper("JVM_GetMethodAnnotations"); | |
| 1551 | |
| 1552 // method is a handle to a java.lang.reflect.Method object | |
| 1553 methodOop m = jvm_get_method_common(method, CHECK_NULL); | |
| 1554 return (jbyteArray) JNIHandles::make_local(env, m->annotations()); | |
| 1555 JVM_END | |
| 1556 | |
| 1557 | |
| 1558 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
| 1559 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
| 1560 | |
| 1561 // method is a handle to a java.lang.reflect.Method object | |
| 1562 methodOop m = jvm_get_method_common(method, CHECK_NULL); | |
| 1563 return (jbyteArray) JNIHandles::make_local(env, m->annotation_default()); | |
| 1564 JVM_END | |
| 1565 | |
| 1566 | |
| 1567 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
| 1568 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
| 1569 | |
| 1570 // method is a handle to a java.lang.reflect.Method object | |
| 1571 methodOop m = jvm_get_method_common(method, CHECK_NULL); | |
| 1572 return (jbyteArray) JNIHandles::make_local(env, m->parameter_annotations()); | |
| 1573 JVM_END | |
| 1574 | |
| 1575 | |
| 1576 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
| 1577 | |
| 1578 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1579 { | |
| 1580 JVMWrapper("JVM_GetClassDeclaredFields"); | |
| 1581 JvmtiVMObjectAllocEventCollector oam; | |
| 1582 | |
| 1583 // Exclude primitive types and array types | |
| 1584 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 1585 Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { | |
| 1586 // Return empty array | |
| 1142 | 1587 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
| 0 | 1588 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1589 } | |
| 1590 | |
| 1591 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
| 1592 constantPoolHandle cp(THREAD, k->constants()); | |
| 1593 | |
| 1594 // Ensure class is linked | |
| 1595 k->link_class(CHECK_NULL); | |
| 1596 | |
| 1597 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
| 1598 bool skip_backtrace = false; | |
| 1599 | |
| 1600 // Allocate result | |
| 1601 int num_fields; | |
| 1602 | |
| 1603 if (publicOnly) { | |
| 1604 num_fields = 0; | |
| 3938 | 1605 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
| 1606 if (fs.access_flags().is_public()) ++num_fields; | |
| 0 | 1607 } |
| 1608 } else { | |
| 3938 | 1609 num_fields = k->java_fields_count(); |
| 0 | 1610 |
| 1142 | 1611 if (k() == SystemDictionary::Throwable_klass()) { |
| 0 | 1612 num_fields--; |
| 1613 skip_backtrace = true; | |
| 1614 } | |
| 1615 } | |
| 1616 | |
| 1142 | 1617 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
| 0 | 1618 objArrayHandle result (THREAD, r); |
| 1619 | |
| 1620 int out_idx = 0; | |
| 1621 fieldDescriptor fd; | |
| 3938 | 1622 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
| 0 | 1623 if (skip_backtrace) { |
| 1624 // 4496456 skip java.lang.Throwable.backtrace | |
| 3938 | 1625 int offset = fs.offset(); |
| 0 | 1626 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
| 1627 } | |
| 1628 | |
| 3938 | 1629 if (!publicOnly || fs.access_flags().is_public()) { |
| 1630 fd.initialize(k(), fs.index()); | |
| 0 | 1631 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
| 1632 result->obj_at_put(out_idx, field); | |
| 1633 ++out_idx; | |
| 1634 } | |
| 1635 } | |
| 1636 assert(out_idx == num_fields, "just checking"); | |
| 1637 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1638 } | |
| 1639 JVM_END | |
| 1640 | |
| 1641 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1642 { | |
| 1643 JVMWrapper("JVM_GetClassDeclaredMethods"); | |
| 1644 JvmtiVMObjectAllocEventCollector oam; | |
| 1645 | |
| 1646 // Exclude primitive types and array types | |
| 1647 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
| 1648 || Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { | |
| 1649 // Return empty array | |
| 1142 | 1650 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), 0, CHECK_NULL); |
| 0 | 1651 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1652 } | |
| 1653 | |
| 1654 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
| 1655 | |
| 1656 // Ensure class is linked | |
| 1657 k->link_class(CHECK_NULL); | |
| 1658 | |
| 1659 objArrayHandle methods (THREAD, k->methods()); | |
| 1660 int methods_length = methods->length(); | |
| 1661 int num_methods = 0; | |
| 1662 | |
| 1663 int i; | |
| 1664 for (i = 0; i < methods_length; i++) { | |
| 1665 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
| 1666 if (!method->is_initializer()) { | |
| 1667 if (!publicOnly || method->is_public()) { | |
| 1668 ++num_methods; | |
| 1669 } | |
| 1670 } | |
| 1671 } | |
| 1672 | |
| 1673 // Allocate result | |
| 1142 | 1674 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), num_methods, CHECK_NULL); |
| 0 | 1675 objArrayHandle result (THREAD, r); |
| 1676 | |
| 1677 int out_idx = 0; | |
| 1678 for (i = 0; i < methods_length; i++) { | |
| 1679 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
| 1680 if (!method->is_initializer()) { | |
| 1681 if (!publicOnly || method->is_public()) { | |
| 1682 oop m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); | |
| 1683 result->obj_at_put(out_idx, m); | |
| 1684 ++out_idx; | |
| 1685 } | |
| 1686 } | |
| 1687 } | |
| 1688 assert(out_idx == num_methods, "just checking"); | |
| 1689 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1690 } | |
| 1691 JVM_END | |
| 1692 | |
| 1693 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1694 { | |
| 1695 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
| 1696 JvmtiVMObjectAllocEventCollector oam; | |
| 1697 | |
| 1698 // Exclude primitive types and array types | |
| 1699 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
| 1700 || Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { | |
| 1701 // Return empty array | |
| 1142 | 1702 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), 0 , CHECK_NULL); |
| 0 | 1703 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1704 } | |
| 1705 | |
| 1706 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
| 1707 | |
| 1708 // Ensure class is linked | |
| 1709 k->link_class(CHECK_NULL); | |
| 1710 | |
| 1711 objArrayHandle methods (THREAD, k->methods()); | |
| 1712 int methods_length = methods->length(); | |
| 1713 int num_constructors = 0; | |
| 1714 | |
| 1715 int i; | |
| 1716 for (i = 0; i < methods_length; i++) { | |
| 1717 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
| 1718 if (method->is_initializer() && !method->is_static()) { | |
| 1719 if (!publicOnly || method->is_public()) { | |
| 1720 ++num_constructors; | |
| 1721 } | |
| 1722 } | |
| 1723 } | |
| 1724 | |
| 1725 // Allocate result | |
| 1142 | 1726 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), num_constructors, CHECK_NULL); |
| 0 | 1727 objArrayHandle result(THREAD, r); |
| 1728 | |
| 1729 int out_idx = 0; | |
| 1730 for (i = 0; i < methods_length; i++) { | |
| 1731 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
| 1732 if (method->is_initializer() && !method->is_static()) { | |
| 1733 if (!publicOnly || method->is_public()) { | |
| 1734 oop m = Reflection::new_constructor(method, CHECK_NULL); | |
| 1735 result->obj_at_put(out_idx, m); | |
| 1736 ++out_idx; | |
| 1737 } | |
| 1738 } | |
| 1739 } | |
| 1740 assert(out_idx == num_constructors, "just checking"); | |
| 1741 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1742 } | |
| 1743 JVM_END | |
| 1744 | |
| 1745 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
| 1746 { | |
| 1747 JVMWrapper("JVM_GetClassAccessFlags"); | |
| 1748 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1749 // Primitive type | |
| 1750 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 1751 } | |
| 1752 | |
| 1753 Klass* k = Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls))); | |
| 1754 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; | |
| 1755 } | |
| 1756 JVM_END | |
| 1757 | |
| 1758 | |
| 1759 // Constant pool access ////////////////////////////////////////////////////////// | |
| 1760 | |
| 1761 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
| 1762 { | |
| 1763 JVMWrapper("JVM_GetClassConstantPool"); | |
| 1764 JvmtiVMObjectAllocEventCollector oam; | |
| 1765 | |
| 1766 // Return null for primitives and arrays | |
| 1767 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1768 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 1769 if (Klass::cast(k)->oop_is_instance()) { | |
| 1770 instanceKlassHandle k_h(THREAD, k); | |
| 1771 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
| 1772 sun_reflect_ConstantPool::set_cp_oop(jcp(), k_h->constants()); | |
| 1773 return JNIHandles::make_local(jcp()); | |
| 1774 } | |
| 1775 } | |
| 1776 return NULL; | |
| 1777 } | |
| 1778 JVM_END | |
| 1779 | |
| 1780 | |
| 1781 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject unused, jobject jcpool)) | |
| 1782 { | |
| 1783 JVMWrapper("JVM_ConstantPoolGetSize"); | |
| 1784 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1785 return cp->length(); | |
| 1786 } | |
| 1787 JVM_END | |
| 1788 | |
| 1789 | |
| 1790 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { | |
| 1791 if (!cp->is_within_bounds(index)) { | |
| 1792 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); | |
| 1793 } | |
| 1794 } | |
| 1795 | |
| 1796 | |
| 1797 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1798 { | |
| 1799 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
| 1800 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1801 bounds_check(cp, index, CHECK_NULL); | |
| 1802 constantTag tag = cp->tag_at(index); | |
| 1803 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 1804 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1805 } | |
| 1806 klassOop k = cp->klass_at(index, CHECK_NULL); | |
|
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1807 return (jclass) JNIHandles::make_local(k->java_mirror()); |
| 0 | 1808 } |
| 1809 JVM_END | |
| 1810 | |
| 1811 | |
| 1812 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1813 { | |
| 1814 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
| 1815 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1816 bounds_check(cp, index, CHECK_NULL); | |
| 1817 constantTag tag = cp->tag_at(index); | |
| 1818 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 1819 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1820 } | |
| 1821 klassOop k = constantPoolOopDesc::klass_at_if_loaded(cp, index); | |
| 1822 if (k == NULL) return NULL; | |
|
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1823 return (jclass) JNIHandles::make_local(k->java_mirror()); |
| 0 | 1824 } |
| 1825 JVM_END | |
| 1826 | |
| 1827 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 1828 constantTag tag = cp->tag_at(index); | |
| 1829 if (!tag.is_method() && !tag.is_interface_method()) { | |
| 1830 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1831 } | |
| 1832 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
| 1833 klassOop k_o; | |
| 1834 if (force_resolution) { | |
| 1835 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 1836 } else { | |
| 1837 k_o = constantPoolOopDesc::klass_at_if_loaded(cp, klass_ref); | |
| 1838 if (k_o == NULL) return NULL; | |
| 1839 } | |
| 1840 instanceKlassHandle k(THREAD, k_o); | |
|
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1841 Symbol* name = cp->uncached_name_ref_at(index); |
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1842 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 1843 methodHandle m (THREAD, k->find_method(name, sig)); |
| 1844 if (m.is_null()) { | |
| 1845 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
| 1846 } | |
| 1847 oop method; | |
| 1848 if (!m->is_initializer() || m->is_static()) { | |
| 1849 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
| 1850 } else { | |
| 1851 method = Reflection::new_constructor(m, CHECK_NULL); | |
| 1852 } | |
| 1853 return JNIHandles::make_local(method); | |
| 1854 } | |
| 1855 | |
| 1856 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1857 { | |
| 1858 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
| 1859 JvmtiVMObjectAllocEventCollector oam; | |
| 1860 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1861 bounds_check(cp, index, CHECK_NULL); | |
| 1862 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
| 1863 return res; | |
| 1864 } | |
| 1865 JVM_END | |
| 1866 | |
| 1867 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1868 { | |
| 1869 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
| 1870 JvmtiVMObjectAllocEventCollector oam; | |
| 1871 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1872 bounds_check(cp, index, CHECK_NULL); | |
| 1873 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
| 1874 return res; | |
| 1875 } | |
| 1876 JVM_END | |
| 1877 | |
| 1878 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 1879 constantTag tag = cp->tag_at(index); | |
| 1880 if (!tag.is_field()) { | |
| 1881 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1882 } | |
| 1883 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
| 1884 klassOop k_o; | |
| 1885 if (force_resolution) { | |
| 1886 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 1887 } else { | |
| 1888 k_o = constantPoolOopDesc::klass_at_if_loaded(cp, klass_ref); | |
| 1889 if (k_o == NULL) return NULL; | |
| 1890 } | |
| 1891 instanceKlassHandle k(THREAD, k_o); | |
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1892 Symbol* name = cp->uncached_name_ref_at(index); |
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1893 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 1894 fieldDescriptor fd; |
| 1895 klassOop target_klass = k->find_field(name, sig, &fd); | |
| 1896 if (target_klass == NULL) { | |
| 1897 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
| 1898 } | |
| 1899 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
| 1900 return JNIHandles::make_local(field); | |
| 1901 } | |
| 1902 | |
| 1903 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1904 { | |
| 1905 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
| 1906 JvmtiVMObjectAllocEventCollector oam; | |
| 1907 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1908 bounds_check(cp, index, CHECK_NULL); | |
| 1909 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
| 1910 return res; | |
| 1911 } | |
| 1912 JVM_END | |
| 1913 | |
| 1914 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1915 { | |
| 1916 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
| 1917 JvmtiVMObjectAllocEventCollector oam; | |
| 1918 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1919 bounds_check(cp, index, CHECK_NULL); | |
| 1920 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
| 1921 return res; | |
| 1922 } | |
| 1923 JVM_END | |
| 1924 | |
| 1925 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1926 { | |
| 1927 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
| 1928 JvmtiVMObjectAllocEventCollector oam; | |
| 1929 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1930 bounds_check(cp, index, CHECK_NULL); | |
| 1931 constantTag tag = cp->tag_at(index); | |
| 1932 if (!tag.is_field_or_method()) { | |
| 1933 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1934 } | |
| 1935 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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1936 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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1937 Symbol* member_name = cp->uncached_name_ref_at(index); |
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1938 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
| 1142 | 1939 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
| 0 | 1940 objArrayHandle dest(THREAD, dest_o); |
| 1941 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
| 1942 dest->obj_at_put(0, str()); | |
| 1943 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
| 1944 dest->obj_at_put(1, str()); | |
| 1945 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
| 1946 dest->obj_at_put(2, str()); | |
| 1947 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 1948 } | |
| 1949 JVM_END | |
| 1950 | |
| 1951 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1952 { | |
| 1953 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
| 1954 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1955 bounds_check(cp, index, CHECK_0); | |
| 1956 constantTag tag = cp->tag_at(index); | |
| 1957 if (!tag.is_int()) { | |
| 1958 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1959 } | |
| 1960 return cp->int_at(index); | |
| 1961 } | |
| 1962 JVM_END | |
| 1963 | |
| 1964 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1965 { | |
| 1966 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
| 1967 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1968 bounds_check(cp, index, CHECK_(0L)); | |
| 1969 constantTag tag = cp->tag_at(index); | |
| 1970 if (!tag.is_long()) { | |
| 1971 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1972 } | |
| 1973 return cp->long_at(index); | |
| 1974 } | |
| 1975 JVM_END | |
| 1976 | |
| 1977 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1978 { | |
| 1979 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
| 1980 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1981 bounds_check(cp, index, CHECK_(0.0f)); | |
| 1982 constantTag tag = cp->tag_at(index); | |
| 1983 if (!tag.is_float()) { | |
| 1984 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1985 } | |
| 1986 return cp->float_at(index); | |
| 1987 } | |
| 1988 JVM_END | |
| 1989 | |
| 1990 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1991 { | |
| 1992 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
| 1993 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1994 bounds_check(cp, index, CHECK_(0.0)); | |
| 1995 constantTag tag = cp->tag_at(index); | |
| 1996 if (!tag.is_double()) { | |
| 1997 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1998 } | |
| 1999 return cp->double_at(index); | |
| 2000 } | |
| 2001 JVM_END | |
| 2002 | |
| 2003 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 2004 { | |
| 2005 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
| 2006 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 2007 bounds_check(cp, index, CHECK_NULL); | |
| 2008 constantTag tag = cp->tag_at(index); | |
| 2009 if (!tag.is_string() && !tag.is_unresolved_string()) { | |
| 2010 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2011 } | |
| 2012 oop str = cp->string_at(index, CHECK_NULL); | |
| 2013 return (jstring) JNIHandles::make_local(str); | |
| 2014 } | |
| 2015 JVM_END | |
| 2016 | |
| 2017 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 2018 { | |
| 2019 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
| 2020 JvmtiVMObjectAllocEventCollector oam; | |
| 2021 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 2022 bounds_check(cp, index, CHECK_NULL); | |
| 2023 constantTag tag = cp->tag_at(index); | |
| 2024 if (!tag.is_symbol()) { | |
| 2025 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2026 } | |
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2027 Symbol* sym = cp->symbol_at(index); |
| 0 | 2028 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 2029 return (jstring) JNIHandles::make_local(str()); | |
| 2030 } | |
| 2031 JVM_END | |
| 2032 | |
| 2033 | |
| 2034 // Assertion support. ////////////////////////////////////////////////////////// | |
| 2035 | |
| 2036 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
| 2037 JVMWrapper("JVM_DesiredAssertionStatus"); | |
| 2038 assert(cls != NULL, "bad class"); | |
| 2039 | |
| 2040 oop r = JNIHandles::resolve(cls); | |
| 2041 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
| 2042 if (java_lang_Class::is_primitive(r)) return false; | |
| 2043 | |
| 2044 klassOop k = java_lang_Class::as_klassOop(r); | |
| 2045 assert(Klass::cast(k)->oop_is_instance(), "must be an instance klass"); | |
| 2046 if (! Klass::cast(k)->oop_is_instance()) return false; | |
| 2047 | |
| 2048 ResourceMark rm(THREAD); | |
| 2049 const char* name = Klass::cast(k)->name()->as_C_string(); | |
| 2050 bool system_class = Klass::cast(k)->class_loader() == NULL; | |
| 2051 return JavaAssertions::enabled(name, system_class); | |
| 2052 | |
| 2053 JVM_END | |
| 2054 | |
| 2055 | |
| 2056 // Return a new AssertionStatusDirectives object with the fields filled in with | |
| 2057 // command-line assertion arguments (i.e., -ea, -da). | |
| 2058 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
| 2059 JVMWrapper("JVM_AssertionStatusDirectives"); | |
| 2060 JvmtiVMObjectAllocEventCollector oam; | |
| 2061 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
| 2062 return JNIHandles::make_local(env, asd); | |
| 2063 JVM_END | |
| 2064 | |
| 2065 // Verification //////////////////////////////////////////////////////////////////////////////// | |
| 2066 | |
| 2067 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
| 2068 | |
| 2069 // RedefineClasses support: bug 6214132 caused verification to fail. | |
| 2070 // All functions from this section should call the jvmtiThreadSate function: | |
| 2071 // klassOop class_to_verify_considering_redefinition(klassOop klass). | |
| 2072 // The function returns a klassOop of the _scratch_class if the verifier | |
| 2073 // was invoked in the middle of the class redefinition. | |
| 2074 // Otherwise it returns its argument value which is the _the_class klassOop. | |
| 2075 // Please, refer to the description in the jvmtiThreadSate.hpp. | |
| 2076 | |
| 2077 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
| 2078 JVMWrapper("JVM_GetClassNameUTF"); | |
| 2079 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2080 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2081 return Klass::cast(k)->name()->as_utf8(); | |
| 2082 JVM_END | |
| 2083 | |
| 2084 | |
| 2085 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
| 2086 JVMWrapper("JVM_GetClassCPTypes"); | |
| 2087 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2088 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2089 // types will have length zero if this is not an instanceKlass | |
| 2090 // (length is determined by call to JVM_GetClassCPEntriesCount) | |
| 2091 if (Klass::cast(k)->oop_is_instance()) { | |
| 2092 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2093 for (int index = cp->length() - 1; index >= 0; index--) { | |
| 2094 constantTag tag = cp->tag_at(index); | |
| 2095 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : | |
| 2096 (tag.is_unresolved_string()) ? JVM_CONSTANT_String : tag.value(); | |
| 2097 } | |
| 2098 } | |
| 2099 JVM_END | |
| 2100 | |
| 2101 | |
| 2102 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
| 2103 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
| 2104 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2105 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2106 if (!Klass::cast(k)->oop_is_instance()) | |
| 2107 return 0; | |
| 2108 return instanceKlass::cast(k)->constants()->length(); | |
| 2109 JVM_END | |
| 2110 | |
| 2111 | |
| 2112 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
| 2113 JVMWrapper("JVM_GetClassFieldsCount"); | |
| 2114 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2115 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2116 if (!Klass::cast(k)->oop_is_instance()) | |
| 2117 return 0; | |
| 3938 | 2118 return instanceKlass::cast(k)->java_fields_count(); |
| 0 | 2119 JVM_END |
| 2120 | |
| 2121 | |
| 2122 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
| 2123 JVMWrapper("JVM_GetClassMethodsCount"); | |
| 2124 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2125 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2126 if (!Klass::cast(k)->oop_is_instance()) | |
| 2127 return 0; | |
| 2128 return instanceKlass::cast(k)->methods()->length(); | |
| 2129 JVM_END | |
| 2130 | |
| 2131 | |
| 2132 // The following methods, used for the verifier, are never called with | |
| 2133 // array klasses, so a direct cast to instanceKlass is safe. | |
| 2134 // Typically, these methods are called in a loop with bounds determined | |
| 2135 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
| 2136 // zero for arrays. | |
| 2137 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
| 2138 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
| 2139 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2140 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2141 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2142 int length = methodOop(method)->checked_exceptions_length(); | |
| 2143 if (length > 0) { | |
| 2144 CheckedExceptionElement* table= methodOop(method)->checked_exceptions_start(); | |
| 2145 for (int i = 0; i < length; i++) { | |
| 2146 exceptions[i] = table[i].class_cp_index; | |
| 2147 } | |
| 2148 } | |
| 2149 JVM_END | |
| 2150 | |
| 2151 | |
| 2152 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
| 2153 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
| 2154 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2155 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2156 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2157 return methodOop(method)->checked_exceptions_length(); | |
| 2158 JVM_END | |
| 2159 | |
| 2160 | |
| 2161 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
| 2162 JVMWrapper("JVM_GetMethodIxByteCode"); | |
| 2163 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2164 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2165 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2166 memcpy(code, methodOop(method)->code_base(), methodOop(method)->code_size()); | |
| 2167 JVM_END | |
| 2168 | |
| 2169 | |
| 2170 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
| 2171 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
| 2172 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2173 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2174 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2175 return methodOop(method)->code_size(); | |
| 2176 JVM_END | |
| 2177 | |
| 2178 | |
| 2179 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
| 2180 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
| 2181 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2182 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2183 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2184 typeArrayOop extable = methodOop(method)->exception_table(); | |
| 2185 entry->start_pc = extable->int_at(entry_index * 4); | |
| 2186 entry->end_pc = extable->int_at(entry_index * 4 + 1); | |
| 2187 entry->handler_pc = extable->int_at(entry_index * 4 + 2); | |
| 2188 entry->catchType = extable->int_at(entry_index * 4 + 3); | |
| 2189 JVM_END | |
| 2190 | |
| 2191 | |
| 2192 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
| 2193 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
| 2194 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2195 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2196 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2197 return methodOop(method)->exception_table()->length() / 4; | |
| 2198 JVM_END | |
| 2199 | |
| 2200 | |
| 2201 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
| 2202 JVMWrapper("JVM_GetMethodIxModifiers"); | |
| 2203 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2204 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2205 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2206 return methodOop(method)->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 2207 JVM_END | |
| 2208 | |
| 2209 | |
| 2210 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
| 2211 JVMWrapper("JVM_GetFieldIxModifiers"); | |
| 2212 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2213 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 3938 | 2214 return instanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
| 0 | 2215 JVM_END |
| 2216 | |
| 2217 | |
| 2218 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
| 2219 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
| 2220 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2221 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2222 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2223 return methodOop(method)->max_locals(); | |
| 2224 JVM_END | |
| 2225 | |
| 2226 | |
| 2227 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
| 2228 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
| 2229 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2230 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2231 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2232 return methodOop(method)->size_of_parameters(); | |
| 2233 JVM_END | |
| 2234 | |
| 2235 | |
| 2236 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
| 2237 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
| 2238 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2239 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2240 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2241 return methodOop(method)->max_stack(); | |
| 2242 JVM_END | |
| 2243 | |
| 2244 | |
| 2245 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
| 2246 JVMWrapper("JVM_IsConstructorIx"); | |
| 2247 ResourceMark rm(THREAD); | |
| 2248 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2249 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2250 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2251 return methodOop(method)->name() == vmSymbols::object_initializer_name(); | |
| 2252 JVM_END | |
| 2253 | |
| 2254 | |
| 2255 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) | |
| 2256 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
| 2257 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2258 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2259 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2260 return methodOop(method)->name()->as_utf8(); | |
| 2261 JVM_END | |
| 2262 | |
| 2263 | |
| 2264 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
| 2265 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
| 2266 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2267 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2268 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2269 return methodOop(method)->signature()->as_utf8(); | |
| 2270 JVM_END | |
| 2271 | |
| 2272 /** | |
| 2273 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
| 2274 * read entries in the constant pool. Since the old verifier always | |
| 2275 * works on a copy of the code, it will not see any rewriting that | |
| 2276 * may possibly occur in the middle of verification. So it is important | |
| 2277 * that nothing it calls tries to use the cpCache instead of the raw | |
| 2278 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
| 2279 */ | |
| 2280 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2281 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
| 2282 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2283 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2284 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2285 switch (cp->tag_at(cp_index).value()) { | |
| 2286 case JVM_CONSTANT_Fieldref: | |
| 2287 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
| 2288 default: | |
| 2289 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
| 2290 } | |
| 2291 ShouldNotReachHere(); | |
| 2292 return NULL; | |
| 2293 JVM_END | |
| 2294 | |
| 2295 | |
| 2296 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2297 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
| 2298 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2299 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2300 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2301 switch (cp->tag_at(cp_index).value()) { | |
| 2302 case JVM_CONSTANT_InterfaceMethodref: | |
| 2303 case JVM_CONSTANT_Methodref: | |
|
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|
2304 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2305 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
| 2306 default: | |
| 2307 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
| 2308 } | |
| 2309 ShouldNotReachHere(); | |
| 2310 return NULL; | |
| 2311 JVM_END | |
| 2312 | |
| 2313 | |
| 2314 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2315 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
| 2316 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2317 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2318 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2319 switch (cp->tag_at(cp_index).value()) { | |
| 2320 case JVM_CONSTANT_InterfaceMethodref: | |
| 2321 case JVM_CONSTANT_Methodref: | |
|
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|
2322 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2323 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
| 2324 default: | |
| 2325 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
| 2326 } | |
| 2327 ShouldNotReachHere(); | |
| 2328 return NULL; | |
| 2329 JVM_END | |
| 2330 | |
| 2331 | |
| 2332 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2333 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
| 2334 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2335 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2336 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2337 switch (cp->tag_at(cp_index).value()) { | |
| 2338 case JVM_CONSTANT_Fieldref: | |
| 2339 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
| 2340 default: | |
| 2341 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
| 2342 } | |
| 2343 ShouldNotReachHere(); | |
| 2344 return NULL; | |
| 2345 JVM_END | |
| 2346 | |
| 2347 | |
| 2348 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2349 JVMWrapper("JVM_GetCPClassNameUTF"); | |
| 2350 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2351 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2352 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
|
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|
2353 Symbol* classname = cp->klass_name_at(cp_index); |
| 0 | 2354 return classname->as_utf8(); |
| 2355 JVM_END | |
| 2356 | |
| 2357 | |
| 2358 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2359 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
| 2360 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2361 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2362 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2363 switch (cp->tag_at(cp_index).value()) { | |
| 2364 case JVM_CONSTANT_Fieldref: { | |
| 2365 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
|
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|
2366 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2367 return classname->as_utf8(); |
| 2368 } | |
| 2369 default: | |
| 2370 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
| 2371 } | |
| 2372 ShouldNotReachHere(); | |
| 2373 return NULL; | |
| 2374 JVM_END | |
| 2375 | |
| 2376 | |
| 2377 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2378 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
| 2379 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2380 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2381 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2382 switch (cp->tag_at(cp_index).value()) { | |
| 2383 case JVM_CONSTANT_Methodref: | |
| 2384 case JVM_CONSTANT_InterfaceMethodref: { | |
| 2385 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
|
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|
2386 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2387 return classname->as_utf8(); |
| 2388 } | |
| 2389 default: | |
| 2390 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
| 2391 } | |
| 2392 ShouldNotReachHere(); | |
| 2393 return NULL; | |
| 2394 JVM_END | |
| 2395 | |
| 2396 | |
| 3938 | 2397 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
| 0 | 2398 JVMWrapper("JVM_GetCPFieldModifiers"); |
| 2399 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2400 klassOop k_called = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(called_cls)); | |
| 2401 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2402 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
| 2403 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2404 constantPoolOop cp_called = instanceKlass::cast(k_called)->constants(); | |
| 2405 switch (cp->tag_at(cp_index).value()) { | |
| 2406 case JVM_CONSTANT_Fieldref: { | |
|
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|
2407 Symbol* name = cp->uncached_name_ref_at(cp_index); |
|
3582bf76420e
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2162
diff
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|
2408 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
| 3938 | 2409 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
| 2410 if (fs.name() == name && fs.signature() == signature) { | |
| 2411 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
| 0 | 2412 } |
| 2413 } | |
| 2414 return -1; | |
| 2415 } | |
| 2416 default: | |
| 2417 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
| 2418 } | |
| 2419 ShouldNotReachHere(); | |
| 2420 return 0; | |
| 2421 JVM_END | |
| 2422 | |
| 2423 | |
| 2424 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
| 2425 JVMWrapper("JVM_GetCPMethodModifiers"); | |
| 2426 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2427 klassOop k_called = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(called_cls)); | |
| 2428 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2429 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
| 2430 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2431 switch (cp->tag_at(cp_index).value()) { | |
| 2432 case JVM_CONSTANT_Methodref: | |
| 2433 case JVM_CONSTANT_InterfaceMethodref: { | |
|
2177
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|
2434 Symbol* name = cp->uncached_name_ref_at(cp_index); |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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2162
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|
2435 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
| 0 | 2436 objArrayOop methods = instanceKlass::cast(k_called)->methods(); |
| 2437 int methods_count = methods->length(); | |
| 2438 for (int i = 0; i < methods_count; i++) { | |
| 2439 methodOop method = methodOop(methods->obj_at(i)); | |
| 2440 if (method->name() == name && method->signature() == signature) { | |
| 2441 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 2442 } | |
| 2443 } | |
| 2444 return -1; | |
| 2445 } | |
| 2446 default: | |
| 2447 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
| 2448 } | |
| 2449 ShouldNotReachHere(); | |
| 2450 return 0; | |
| 2451 JVM_END | |
| 2452 | |
| 2453 | |
| 2454 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
| 2455 | |
| 2456 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
| 2457 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
| 2458 JVM_END | |
| 2459 | |
| 2460 | |
| 2461 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
| 2462 JVMWrapper("JVM_IsSameClassPackage"); | |
| 2463 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
| 2464 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
| 2465 klassOop klass1 = java_lang_Class::as_klassOop(class1_mirror); | |
| 2466 klassOop klass2 = java_lang_Class::as_klassOop(class2_mirror); | |
| 2467 return (jboolean) Reflection::is_same_class_package(klass1, klass2); | |
| 2468 JVM_END | |
| 2469 | |
| 2470 | |
| 2471 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
| 2472 | |
| 2473 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
| 2474 JVMWrapper2("JVM_Open (%s)", fname); | |
| 2475 | |
| 2476 //%note jvm_r6 | |
|
1980
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6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
2477 int result = os::open(fname, flags, mode); |
| 0 | 2478 if (result >= 0) { |
| 2479 return result; | |
| 2480 } else { | |
| 2481 switch(errno) { | |
| 2482 case EEXIST: | |
| 2483 return JVM_EEXIST; | |
| 2484 default: | |
| 2485 return -1; | |
| 2486 } | |
| 2487 } | |
| 2488 JVM_END | |
| 2489 | |
| 2490 | |
| 2491 JVM_LEAF(jint, JVM_Close(jint fd)) | |
| 2492 JVMWrapper2("JVM_Close (0x%x)", fd); | |
| 2493 //%note jvm_r6 | |
|
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828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
2494 return os::close(fd); |
| 0 | 2495 JVM_END |
| 2496 | |
| 2497 | |
| 2498 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
| 2499 JVMWrapper2("JVM_Read (0x%x)", fd); | |
| 2500 | |
| 2501 //%note jvm_r6 | |
|
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6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
2502 return (jint)os::restartable_read(fd, buf, nbytes); |
| 0 | 2503 JVM_END |
| 2504 | |
| 2505 | |
| 2506 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
| 2507 JVMWrapper2("JVM_Write (0x%x)", fd); | |
| 2508 | |
| 2509 //%note jvm_r6 | |
|
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828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2510 return (jint)os::write(fd, buf, nbytes); |
| 0 | 2511 JVM_END |
| 2512 | |
| 2513 | |
| 2514 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
| 2515 JVMWrapper2("JVM_Available (0x%x)", fd); | |
| 2516 //%note jvm_r6 | |
|
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828eafbd85cc
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ikrylov
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diff
changeset
|
2517 return os::available(fd, pbytes); |
| 0 | 2518 JVM_END |
| 2519 | |
| 2520 | |
| 2521 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
| 2522 JVMWrapper4("JVM_Lseek (0x%x, %Ld, %d)", fd, offset, whence); | |
| 2523 //%note jvm_r6 | |
|
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828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2524 return os::lseek(fd, offset, whence); |
| 0 | 2525 JVM_END |
| 2526 | |
| 2527 | |
| 2528 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
| 2529 JVMWrapper3("JVM_SetLength (0x%x, %Ld)", fd, length); | |
|
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828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2530 return os::ftruncate(fd, length); |
| 0 | 2531 JVM_END |
| 2532 | |
| 2533 | |
| 2534 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
| 2535 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
| 2536 //%note jvm_r6 | |
|
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828eafbd85cc
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ikrylov
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1972
diff
changeset
|
2537 return os::fsync(fd); |
| 0 | 2538 JVM_END |
| 2539 | |
| 2540 | |
| 2541 // Printing support ////////////////////////////////////////////////// | |
| 2542 extern "C" { | |
| 2543 | |
| 2544 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { | |
| 2545 // see bug 4399518, 4417214 | |
| 2546 if ((intptr_t)count <= 0) return -1; | |
| 2547 return vsnprintf(str, count, fmt, args); | |
| 2548 } | |
| 2549 | |
| 2550 | |
| 2551 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { | |
| 2552 va_list args; | |
| 2553 int len; | |
| 2554 va_start(args, fmt); | |
| 2555 len = jio_vsnprintf(str, count, fmt, args); | |
| 2556 va_end(args); | |
| 2557 return len; | |
| 2558 } | |
| 2559 | |
| 2560 | |
| 2561 int jio_fprintf(FILE* f, const char *fmt, ...) { | |
| 2562 int len; | |
| 2563 va_list args; | |
| 2564 va_start(args, fmt); | |
| 2565 len = jio_vfprintf(f, fmt, args); | |
| 2566 va_end(args); | |
| 2567 return len; | |
| 2568 } | |
| 2569 | |
| 2570 | |
| 2571 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { | |
| 2572 if (Arguments::vfprintf_hook() != NULL) { | |
| 2573 return Arguments::vfprintf_hook()(f, fmt, args); | |
| 2574 } else { | |
| 2575 return vfprintf(f, fmt, args); | |
| 2576 } | |
| 2577 } | |
| 2578 | |
| 2579 | |
| 2191 | 2580 JNIEXPORT int jio_printf(const char *fmt, ...) { |
| 0 | 2581 int len; |
| 2582 va_list args; | |
| 2583 va_start(args, fmt); | |
| 2584 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
| 2585 va_end(args); | |
| 2586 return len; | |
| 2587 } | |
| 2588 | |
| 2589 | |
| 2590 // HotSpot specific jio method | |
| 2591 void jio_print(const char* s) { | |
| 2592 // Try to make this function as atomic as possible. | |
| 2593 if (Arguments::vfprintf_hook() != NULL) { | |
| 2594 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
| 2595 } else { | |
|
513
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6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
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parents:
431
diff
changeset
|
2596 // Make an unused local variable to avoid warning from gcc 4.x compiler. |
|
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
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431
diff
changeset
|
2597 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
| 0 | 2598 } |
| 2599 } | |
| 2600 | |
| 2601 } // Extern C | |
| 2602 | |
| 2603 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
| 2604 | |
| 2605 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
| 2606 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
| 2607 // OSThread objects. The exception to this rule is when the target object is the thread | |
| 2608 // doing the operation, in which case we know that the thread won't exit until the | |
| 2609 // operation is done (all exits being voluntary). There are a few cases where it is | |
| 2610 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
| 2611 // you are alive. While these can still happen, they are not subject to deadlocks if | |
| 2612 // the lock is held while the operation occurs (this is not the case for suspend, for | |
| 2613 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
| 2614 // implementation is local to this file, we always lock Threads_lock for that one. | |
| 2615 | |
| 2616 static void thread_entry(JavaThread* thread, TRAPS) { | |
| 2617 HandleMark hm(THREAD); | |
| 2618 Handle obj(THREAD, thread->threadObj()); | |
| 2619 JavaValue result(T_VOID); | |
| 2620 JavaCalls::call_virtual(&result, | |
| 2621 obj, | |
| 1142 | 2622 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
|
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|
2623 vmSymbols::run_method_name(), |
|
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diff
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|
2624 vmSymbols::void_method_signature(), |
| 0 | 2625 THREAD); |
| 2626 } | |
| 2627 | |
| 2628 | |
| 2629 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
| 2630 JVMWrapper("JVM_StartThread"); | |
| 2631 JavaThread *native_thread = NULL; | |
| 2632 | |
| 2633 // We cannot hold the Threads_lock when we throw an exception, | |
| 2634 // due to rank ordering issues. Example: we might need to grab the | |
| 2635 // Heap_lock while we construct the exception. | |
| 2636 bool throw_illegal_thread_state = false; | |
| 2637 | |
| 2638 // We must release the Threads_lock before we can post a jvmti event | |
| 2639 // in Thread::start. | |
| 2640 { | |
| 2641 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
| 2642 // we operate. | |
| 2643 MutexLocker mu(Threads_lock); | |
| 2644 | |
|
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|
2645 // Since JDK 5 the java.lang.Thread threadStatus is used to prevent |
|
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|
2646 // re-starting an already started thread, so we should usually find |
|
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diff
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|
2647 // that the JavaThread is null. However for a JNI attached thread |
|
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diff
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|
2648 // there is a small window between the Thread object being created |
|
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diff
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|
2649 // (with its JavaThread set) and the update to its threadStatus, so we |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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|
2650 // have to check for this |
|
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|
2651 if (java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)) != NULL) { |
|
ccfcb502af3f
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|
2652 throw_illegal_thread_state = true; |
| 0 | 2653 } else { |
|
2162
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diff
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|
2654 // We could also check the stillborn flag to see if this thread was already stopped, but |
|
ccfcb502af3f
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diff
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|
2655 // for historical reasons we let the thread detect that itself when it starts running |
|
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|
2656 |
| 0 | 2657 jlong size = |
| 2658 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
| 2659 // Allocate the C++ Thread structure and create the native thread. The | |
| 2660 // stack size retrieved from java is signed, but the constructor takes | |
| 2661 // size_t (an unsigned type), so avoid passing negative values which would | |
| 2662 // result in really large stacks. | |
| 2663 size_t sz = size > 0 ? (size_t) size : 0; | |
| 2664 native_thread = new JavaThread(&thread_entry, sz); | |
| 2665 | |
| 2666 // At this point it may be possible that no osthread was created for the | |
| 2667 // JavaThread due to lack of memory. Check for this situation and throw | |
| 2668 // an exception if necessary. Eventually we may want to change this so | |
| 2669 // that we only grab the lock if the thread was created successfully - | |
| 2670 // then we can also do this check and throw the exception in the | |
| 2671 // JavaThread constructor. | |
| 2672 if (native_thread->osthread() != NULL) { | |
| 2673 // Note: the current thread is not being used within "prepare". | |
| 2674 native_thread->prepare(jthread); | |
| 2675 } | |
| 2676 } | |
| 2677 } | |
| 2678 | |
| 2679 if (throw_illegal_thread_state) { | |
| 2680 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
| 2681 } | |
| 2682 | |
| 2683 assert(native_thread != NULL, "Starting null thread?"); | |
| 2684 | |
| 2685 if (native_thread->osthread() == NULL) { | |
| 2686 // No one should hold a reference to the 'native_thread'. | |
| 2687 delete native_thread; | |
| 2688 if (JvmtiExport::should_post_resource_exhausted()) { | |
| 2689 JvmtiExport::post_resource_exhausted( | |
| 2690 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
| 2691 "unable to create new native thread"); | |
| 2692 } | |
| 2693 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
| 2694 "unable to create new native thread"); | |
| 2695 } | |
| 2696 | |
| 2697 Thread::start(native_thread); | |
| 2698 | |
| 2699 JVM_END | |
| 2700 | |
| 2701 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
| 2702 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
| 2703 // but is thought to be reliable and simple. In the case, where the receiver is the | |
|
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diff
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|
2704 // same thread as the sender, no safepoint is needed. |
| 0 | 2705 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
| 2706 JVMWrapper("JVM_StopThread"); | |
| 2707 | |
| 2708 oop java_throwable = JNIHandles::resolve(throwable); | |
| 2709 if (java_throwable == NULL) { | |
| 2710 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 2711 } | |
| 2712 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2713 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
| 2714 Events::log("JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", receiver, (address)java_thread, throwable); | |
|
2162
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diff
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|
2715 // First check if thread is alive |
| 0 | 2716 if (receiver != NULL) { |
| 2717 // Check if exception is getting thrown at self (use oop equality, since the | |
| 2718 // target object might exit) | |
| 2719 if (java_thread == thread->threadObj()) { | |
| 2720 THROW_OOP(java_throwable); | |
| 2721 } else { | |
| 2722 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
| 2723 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
| 2724 } | |
| 2725 } | |
|
2162
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diff
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|
2726 else { |
|
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diff
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|
2727 // Either: |
|
ccfcb502af3f
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diff
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|
2728 // - target thread has not been started before being stopped, or |
|
ccfcb502af3f
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parents:
1980
diff
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|
2729 // - target thread already terminated |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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1980
diff
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|
2730 // We could read the threadStatus to determine which case it is |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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1980
diff
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|
2731 // but that is overkill as it doesn't matter. We must set the |
|
ccfcb502af3f
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diff
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|
2732 // stillborn flag for the first case, and if the thread has already |
|
ccfcb502af3f
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diff
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|
2733 // exited setting this flag has no affect |
|
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diff
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|
2734 java_lang_Thread::set_stillborn(java_thread); |
|
ccfcb502af3f
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diff
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|
2735 } |
| 0 | 2736 JVM_END |
| 2737 | |
| 2738 | |
| 2739 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
| 2740 JVMWrapper("JVM_IsThreadAlive"); | |
| 2741 | |
| 2742 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
| 2743 return java_lang_Thread::is_alive(thread_oop); | |
| 2744 JVM_END | |
| 2745 | |
| 2746 | |
| 2747 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
| 2748 JVMWrapper("JVM_SuspendThread"); | |
| 2749 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2750 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
| 2751 | |
| 2752 if (receiver != NULL) { | |
| 2753 // thread has run and has not exited (still on threads list) | |
| 2754 | |
| 2755 { | |
| 2756 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
| 2757 if (receiver->is_external_suspend()) { | |
| 2758 // Don't allow nested external suspend requests. We can't return | |
| 2759 // an error from this interface so just ignore the problem. | |
| 2760 return; | |
| 2761 } | |
| 2762 if (receiver->is_exiting()) { // thread is in the process of exiting | |
| 2763 return; | |
| 2764 } | |
| 2765 receiver->set_external_suspend(); | |
| 2766 } | |
| 2767 | |
| 2768 // java_suspend() will catch threads in the process of exiting | |
| 2769 // and will ignore them. | |
| 2770 receiver->java_suspend(); | |
| 2771 | |
| 2772 // It would be nice to have the following assertion in all the | |
| 2773 // time, but it is possible for a racing resume request to have | |
| 2774 // resumed this thread right after we suspended it. Temporarily | |
| 2775 // enable this assertion if you are chasing a different kind of | |
| 2776 // bug. | |
| 2777 // | |
| 2778 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
| 2779 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
| 2780 } | |
| 2781 JVM_END | |
| 2782 | |
| 2783 | |
| 2784 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
| 2785 JVMWrapper("JVM_ResumeThread"); | |
| 2786 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
| 2787 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
| 2788 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
| 2789 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
| 2790 // looks at it. | |
| 2791 MutexLocker ml(Threads_lock); | |
| 2792 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 2793 if (thr != NULL) { | |
| 2794 // the thread has run and is not in the process of exiting | |
| 2795 thr->java_resume(); | |
| 2796 } | |
| 2797 JVM_END | |
| 2798 | |
| 2799 | |
| 2800 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
| 2801 JVMWrapper("JVM_SetThreadPriority"); | |
| 2802 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 2803 MutexLocker ml(Threads_lock); | |
| 2804 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2805 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
| 2806 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 2807 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
| 2808 Thread::set_priority(thr, (ThreadPriority)prio); | |
| 2809 } | |
| 2810 JVM_END | |
| 2811 | |
| 2812 | |
| 2813 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
| 2814 JVMWrapper("JVM_Yield"); | |
| 2815 if (os::dont_yield()) return; | |
|
1324
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fparain
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1144
diff
changeset
|
2816 HS_DTRACE_PROBE0(hotspot, thread__yield); |
| 0 | 2817 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
| 2818 // Critical for similar threading behaviour | |
| 2819 if (ConvertYieldToSleep) { | |
| 2820 os::sleep(thread, MinSleepInterval, false); | |
| 2821 } else { | |
| 2822 os::yield(); | |
| 2823 } | |
| 2824 JVM_END | |
| 2825 | |
| 2826 | |
| 2827 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
| 2828 JVMWrapper("JVM_Sleep"); | |
| 2829 | |
| 2830 if (millis < 0) { | |
| 2831 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
| 2832 } | |
| 2833 | |
| 2834 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
| 2835 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 2836 } | |
| 2837 | |
| 2838 // Save current thread state and restore it at the end of this block. | |
| 2839 // And set new thread state to SLEEPING. | |
| 2840 JavaThreadSleepState jtss(thread); | |
| 2841 | |
|
1324
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1144
diff
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|
2842 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); |
|
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fparain
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1144
diff
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|
2843 |
| 0 | 2844 if (millis == 0) { |
| 2845 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
| 2846 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
| 2847 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
| 2848 // for SOLARIS | |
| 2849 if (ConvertSleepToYield) { | |
| 2850 os::yield(); | |
| 2851 } else { | |
| 2852 ThreadState old_state = thread->osthread()->get_state(); | |
| 2853 thread->osthread()->set_state(SLEEPING); | |
| 2854 os::sleep(thread, MinSleepInterval, false); | |
| 2855 thread->osthread()->set_state(old_state); | |
| 2856 } | |
| 2857 } else { | |
| 2858 ThreadState old_state = thread->osthread()->get_state(); | |
| 2859 thread->osthread()->set_state(SLEEPING); | |
| 2860 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
| 2861 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
| 2862 // us while we were sleeping. We do not overwrite those. | |
| 2863 if (!HAS_PENDING_EXCEPTION) { | |
|
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1144
diff
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|
2864 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); |
| 0 | 2865 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
| 2866 // to properly restore the thread state. That's likely wrong. | |
| 2867 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 2868 } | |
| 2869 } | |
| 2870 thread->osthread()->set_state(old_state); | |
| 2871 } | |
|
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|
2872 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); |
| 0 | 2873 JVM_END |
| 2874 | |
| 2875 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
| 2876 JVMWrapper("JVM_CurrentThread"); | |
| 2877 oop jthread = thread->threadObj(); | |
| 2878 assert (thread != NULL, "no current thread!"); | |
| 2879 return JNIHandles::make_local(env, jthread); | |
| 2880 JVM_END | |
| 2881 | |
| 2882 | |
| 2883 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
| 2884 JVMWrapper("JVM_CountStackFrames"); | |
| 2885 | |
| 2886 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 2887 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2888 bool throw_illegal_thread_state = false; | |
| 2889 int count = 0; | |
| 2890 | |
| 2891 { | |
| 2892 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 2893 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 2894 // acquire of the lock | |
| 2895 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 2896 | |
| 2897 if (thr == NULL) { | |
| 2898 // do nothing | |
| 2899 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
| 2900 // Check whether this java thread has been suspended already. If not, throws | |
| 2901 // IllegalThreadStateException. We defer to throw that exception until | |
| 2902 // Threads_lock is released since loading exception class has to leave VM. | |
| 2903 // The correct way to test a thread is actually suspended is | |
| 2904 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
| 2905 // the Threads_lock. The above tests are sufficient for our purposes | |
| 2906 // provided the walkability of the stack is stable - which it isn't | |
| 2907 // 100% but close enough for most practical purposes. | |
| 2908 throw_illegal_thread_state = true; | |
| 2909 } else { | |
| 2910 // Count all java activation, i.e., number of vframes | |
| 2911 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
| 2912 // Native frames are not counted | |
| 2913 if (!vfst.method()->is_native()) count++; | |
| 2914 } | |
| 2915 } | |
| 2916 } | |
| 2917 | |
| 2918 if (throw_illegal_thread_state) { | |
| 2919 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
| 2920 "this thread is not suspended"); | |
| 2921 } | |
| 2922 return count; | |
| 2923 JVM_END | |
| 2924 | |
| 2925 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
| 2926 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
| 2927 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
| 2928 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
| 2929 // outside the critical section. Threads_lock is hot so we want to minimize | |
| 2930 // the hold-time. A cleaner interface would be to decompose interrupt into | |
| 2931 // two steps. The 1st phase, performed under Threads_lock, would return | |
| 2932 // a closure that'd be invoked after Threads_lock was dropped. | |
| 2933 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
| 2934 // admit spurious wakeups. | |
| 2935 | |
| 2936 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
| 2937 JVMWrapper("JVM_Interrupt"); | |
| 2938 | |
| 2939 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 2940 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2941 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 2942 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 2943 // acquire of the lock | |
| 2944 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 2945 if (thr != NULL) { | |
| 2946 Thread::interrupt(thr); | |
| 2947 } | |
| 2948 JVM_END | |
| 2949 | |
| 2950 | |
| 2951 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
| 2952 JVMWrapper("JVM_IsInterrupted"); | |
| 2953 | |
| 2954 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 2955 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2956 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 2957 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 2958 // acquire of the lock | |
| 2959 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 2960 if (thr == NULL) { | |
| 2961 return JNI_FALSE; | |
| 2962 } else { | |
| 2963 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
| 2964 } | |
| 2965 JVM_END | |
| 2966 | |
| 2967 | |
| 2968 // Return true iff the current thread has locked the object passed in | |
| 2969 | |
| 2970 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
| 2971 JVMWrapper("JVM_HoldsLock"); | |
| 2972 assert(THREAD->is_Java_thread(), "sanity check"); | |
| 2973 if (obj == NULL) { | |
| 2974 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
| 2975 } | |
| 2976 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
| 2977 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
| 2978 JVM_END | |
| 2979 | |
| 2980 | |
| 2981 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
| 2982 JVMWrapper("JVM_DumpAllStacks"); | |
| 2983 VM_PrintThreads op; | |
| 2984 VMThread::execute(&op); | |
| 2985 if (JvmtiExport::should_post_data_dump()) { | |
| 2986 JvmtiExport::post_data_dump(); | |
| 2987 } | |
| 2988 JVM_END | |
| 2989 | |
| 2990 | |
| 2991 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
| 2992 | |
| 2993 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
| 2994 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
| 2995 if (jthread->privileged_stack_top() == NULL) return false; | |
| 2996 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
| 2997 oop loader = jthread->privileged_stack_top()->class_loader(); | |
| 2998 if (loader == NULL) return true; | |
| 2999 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
| 3000 if (trusted) return true; | |
| 3001 } | |
| 3002 return false; | |
| 3003 } | |
| 3004 | |
| 3005 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
| 3006 JVMWrapper("JVM_CurrentLoadedClass"); | |
| 3007 ResourceMark rm(THREAD); | |
| 3008 | |
| 3009 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3010 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3011 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3012 if (trusted) return NULL; | |
| 3013 | |
| 3014 methodOop m = vfst.method(); | |
| 3015 if (!m->is_native()) { | |
| 3016 klassOop holder = m->method_holder(); | |
| 3017 oop loader = instanceKlass::cast(holder)->class_loader(); | |
| 3018 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { | |
| 3019 return (jclass) JNIHandles::make_local(env, Klass::cast(holder)->java_mirror()); | |
| 3020 } | |
| 3021 } | |
| 3022 } | |
| 3023 return NULL; | |
| 3024 JVM_END | |
| 3025 | |
| 3026 | |
| 3027 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
| 3028 JVMWrapper("JVM_CurrentClassLoader"); | |
| 3029 ResourceMark rm(THREAD); | |
| 3030 | |
| 3031 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3032 | |
| 3033 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3034 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3035 if (trusted) return NULL; | |
| 3036 | |
| 3037 methodOop m = vfst.method(); | |
| 3038 if (!m->is_native()) { | |
| 3039 klassOop holder = m->method_holder(); | |
| 3040 assert(holder->is_klass(), "just checking"); | |
| 3041 oop loader = instanceKlass::cast(holder)->class_loader(); | |
| 3042 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { | |
| 3043 return JNIHandles::make_local(env, loader); | |
| 3044 } | |
| 3045 } | |
| 3046 } | |
| 3047 return NULL; | |
| 3048 JVM_END | |
| 3049 | |
| 3050 | |
| 3051 // Utility object for collecting method holders walking down the stack | |
| 3052 class KlassLink: public ResourceObj { | |
| 3053 public: | |
| 3054 KlassHandle klass; | |
| 3055 KlassLink* next; | |
| 3056 | |
| 3057 KlassLink(KlassHandle k) { klass = k; next = NULL; } | |
| 3058 }; | |
| 3059 | |
| 3060 | |
| 3061 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
| 3062 JVMWrapper("JVM_GetClassContext"); | |
| 3063 ResourceMark rm(THREAD); | |
| 3064 JvmtiVMObjectAllocEventCollector oam; | |
| 3065 // Collect linked list of (handles to) method holders | |
| 3066 KlassLink* first = NULL; | |
| 3067 KlassLink* last = NULL; | |
| 3068 int depth = 0; | |
| 3069 | |
| 3070 for(vframeStream vfst(thread); !vfst.at_end(); vfst.security_get_caller_frame(1)) { | |
| 3071 // Native frames are not returned | |
| 3072 if (!vfst.method()->is_native()) { | |
| 3073 klassOop holder = vfst.method()->method_holder(); | |
| 3074 assert(holder->is_klass(), "just checking"); | |
| 3075 depth++; | |
| 3076 KlassLink* l = new KlassLink(KlassHandle(thread, holder)); | |
| 3077 if (first == NULL) { | |
| 3078 first = last = l; | |
| 3079 } else { | |
| 3080 last->next = l; | |
| 3081 last = l; | |
| 3082 } | |
| 3083 } | |
| 3084 } | |
| 3085 | |
| 3086 // Create result array of type [Ljava/lang/Class; | |
| 1142 | 3087 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), depth, CHECK_NULL); |
| 0 | 3088 // Fill in mirrors corresponding to method holders |
| 3089 int index = 0; | |
| 3090 while (first != NULL) { | |
| 3091 result->obj_at_put(index++, Klass::cast(first->klass())->java_mirror()); | |
| 3092 first = first->next; | |
| 3093 } | |
| 3094 assert(index == depth, "just checking"); | |
| 3095 | |
| 3096 return (jobjectArray) JNIHandles::make_local(env, result); | |
| 3097 JVM_END | |
| 3098 | |
| 3099 | |
| 3100 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
| 3101 JVMWrapper("JVM_ClassDepth"); | |
| 3102 ResourceMark rm(THREAD); | |
| 3103 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 3104 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
| 3105 | |
| 3106 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
|
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|
3107 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
|
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|
3108 if (class_name_sym == NULL) { |
| 0 | 3109 return -1; |
| 3110 } | |
| 3111 | |
| 3112 int depth = 0; | |
| 3113 | |
| 3114 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3115 if (!vfst.method()->is_native()) { | |
| 3116 klassOop holder = vfst.method()->method_holder(); | |
| 3117 assert(holder->is_klass(), "just checking"); | |
|
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3118 if (instanceKlass::cast(holder)->name() == class_name_sym) { |
| 0 | 3119 return depth; |
| 3120 } | |
| 3121 depth++; | |
| 3122 } | |
| 3123 } | |
| 3124 return -1; | |
| 3125 JVM_END | |
| 3126 | |
| 3127 | |
| 3128 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
| 3129 JVMWrapper("JVM_ClassLoaderDepth"); | |
| 3130 ResourceMark rm(THREAD); | |
| 3131 int depth = 0; | |
| 3132 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3133 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
| 3134 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3135 if (trusted) return -1; | |
| 3136 | |
| 3137 methodOop m = vfst.method(); | |
| 3138 if (!m->is_native()) { | |
| 3139 klassOop holder = m->method_holder(); | |
| 3140 assert(holder->is_klass(), "just checking"); | |
| 3141 oop loader = instanceKlass::cast(holder)->class_loader(); | |
| 3142 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { | |
| 3143 return depth; | |
| 3144 } | |
| 3145 depth++; | |
| 3146 } | |
| 3147 } | |
| 3148 return -1; | |
| 3149 JVM_END | |
| 3150 | |
| 3151 | |
| 3152 // java.lang.Package //////////////////////////////////////////////////////////////// | |
| 3153 | |
| 3154 | |
| 3155 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
| 3156 JVMWrapper("JVM_GetSystemPackage"); | |
| 3157 ResourceMark rm(THREAD); | |
| 3158 JvmtiVMObjectAllocEventCollector oam; | |
| 3159 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
| 3160 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
| 3161 return (jstring) JNIHandles::make_local(result); | |
| 3162 JVM_END | |
| 3163 | |
| 3164 | |
| 3165 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
| 3166 JVMWrapper("JVM_GetSystemPackages"); | |
| 3167 JvmtiVMObjectAllocEventCollector oam; | |
| 3168 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
| 3169 return (jobjectArray) JNIHandles::make_local(result); | |
| 3170 JVM_END | |
| 3171 | |
| 3172 | |
| 3173 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
| 3174 | |
| 3175 bool force_verify_field_access(klassOop current_class, klassOop field_class, AccessFlags access, bool classloader_only) { | |
| 3176 if (current_class == NULL) { | |
| 3177 return true; | |
| 3178 } | |
| 3179 if ((current_class == field_class) || access.is_public()) { | |
| 3180 return true; | |
| 3181 } | |
| 3182 | |
| 3183 if (access.is_protected()) { | |
| 3184 // See if current_class is a subclass of field_class | |
| 3185 if (Klass::cast(current_class)->is_subclass_of(field_class)) { | |
| 3186 return true; | |
| 3187 } | |
| 3188 } | |
| 3189 | |
| 3190 return (!access.is_private() && instanceKlass::cast(current_class)->is_same_class_package(field_class)); | |
| 3191 } | |
| 3192 | |
| 3193 | |
| 3194 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
| 3195 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
| 3196 JVMWrapper("JVM_AllocateNewObject"); | |
| 3197 JvmtiVMObjectAllocEventCollector oam; | |
| 3198 // Receiver is not used | |
| 3199 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
| 3200 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
| 3201 | |
| 3202 // Cannot instantiate primitive types | |
| 3203 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
| 3204 ResourceMark rm(THREAD); | |
| 3205 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3206 } | |
| 3207 | |
| 3208 // Arrays not allowed here, must use JVM_AllocateNewArray | |
| 3209 if (Klass::cast(java_lang_Class::as_klassOop(curr_mirror))->oop_is_javaArray() || | |
| 3210 Klass::cast(java_lang_Class::as_klassOop(init_mirror))->oop_is_javaArray()) { | |
| 3211 ResourceMark rm(THREAD); | |
| 3212 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3213 } | |
| 3214 | |
| 3215 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_klassOop(curr_mirror)); | |
| 3216 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_klassOop(init_mirror)); | |
| 3217 | |
| 3218 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
| 3219 | |
| 3220 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
| 3221 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
| 3222 | |
| 3223 // Make sure klass is initialized, since we are about to instantiate one of them. | |
| 3224 curr_klass->initialize(CHECK_NULL); | |
| 3225 | |
| 3226 methodHandle m (THREAD, | |
| 3227 init_klass->find_method(vmSymbols::object_initializer_name(), | |
| 3228 vmSymbols::void_method_signature())); | |
| 3229 if (m.is_null()) { | |
| 3230 ResourceMark rm(THREAD); | |
| 3231 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
| 3232 methodOopDesc::name_and_sig_as_C_string(Klass::cast(init_klass()), | |
| 3233 vmSymbols::object_initializer_name(), | |
| 3234 vmSymbols::void_method_signature())); | |
| 3235 } | |
| 3236 | |
| 3237 if (curr_klass == init_klass && !m->is_public()) { | |
| 3238 // Calling the constructor for class 'curr_klass'. | |
| 3239 // Only allow calls to a public no-arg constructor. | |
| 3240 // This path corresponds to creating an Externalizable object. | |
| 3241 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3242 } | |
| 3243 | |
| 3244 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
| 3245 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
| 3246 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3247 } | |
| 3248 | |
| 3249 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
| 3250 // Call constructor m. This might call a constructor higher up in the hierachy | |
| 3251 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
| 3252 | |
| 3253 return JNIHandles::make_local(obj()); | |
| 3254 JVM_END | |
| 3255 | |
| 3256 | |
| 3257 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
| 3258 JVMWrapper("JVM_AllocateNewArray"); | |
| 3259 JvmtiVMObjectAllocEventCollector oam; | |
| 3260 oop mirror = JNIHandles::resolve_non_null(currClass); | |
| 3261 | |
| 3262 if (java_lang_Class::is_primitive(mirror)) { | |
| 3263 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3264 } | |
| 3265 klassOop k = java_lang_Class::as_klassOop(mirror); | |
| 3266 oop result; | |
| 3267 | |
| 3268 if (k->klass_part()->oop_is_typeArray()) { | |
| 3269 // typeArray | |
| 3270 result = typeArrayKlass::cast(k)->allocate(length, CHECK_NULL); | |
| 3271 } else if (k->klass_part()->oop_is_objArray()) { | |
| 3272 // objArray | |
| 3273 objArrayKlassHandle oak(THREAD, k); | |
| 3274 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) | |
| 3275 result = oak->allocate(length, CHECK_NULL); | |
| 3276 } else { | |
| 3277 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3278 } | |
| 3279 return JNIHandles::make_local(env, result); | |
| 3280 JVM_END | |
| 3281 | |
| 3282 | |
| 3283 // Return the first non-null class loader up the execution stack, or null | |
| 3284 // if only code from the null class loader is on the stack. | |
| 3285 | |
| 3286 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
| 3287 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3288 // UseNewReflection | |
| 3289 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
| 3290 klassOop holder = vfst.method()->method_holder(); | |
| 3291 oop loader = instanceKlass::cast(holder)->class_loader(); | |
| 3292 if (loader != NULL) { | |
| 3293 return JNIHandles::make_local(env, loader); | |
| 3294 } | |
| 3295 } | |
| 3296 return NULL; | |
| 3297 JVM_END | |
| 3298 | |
| 3299 | |
| 3300 // Load a class relative to the most recent class on the stack with a non-null | |
| 3301 // classloader. | |
| 3302 // This function has been deprecated and should not be considered part of the | |
| 3303 // specified JVM interface. | |
| 3304 | |
| 3305 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
| 3306 jclass currClass, jstring currClassName)) | |
| 3307 JVMWrapper("JVM_LoadClass0"); | |
| 3308 // Receiver is not used | |
| 3309 ResourceMark rm(THREAD); | |
| 3310 | |
| 3311 // Class name argument is not guaranteed to be in internal format | |
| 3312 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
| 3313 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
| 3314 | |
| 3315 const char* str = java_lang_String::as_utf8_string(string()); | |
| 3316 | |
|
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|
3317 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
| 0 | 3318 // It's impossible to create this class; the name cannot fit |
| 3319 // into the constant pool. | |
| 3320 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
| 3321 } | |
| 3322 | |
|
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|
3323 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
| 0 | 3324 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
| 3325 // Find the most recent class on the stack with a non-null classloader | |
| 3326 oop loader = NULL; | |
| 3327 oop protection_domain = NULL; | |
| 3328 if (curr_klass.is_null()) { | |
| 3329 for (vframeStream vfst(thread); | |
| 3330 !vfst.at_end() && loader == NULL; | |
| 3331 vfst.next()) { | |
| 3332 if (!vfst.method()->is_native()) { | |
| 3333 klassOop holder = vfst.method()->method_holder(); | |
| 3334 loader = instanceKlass::cast(holder)->class_loader(); | |
| 3335 protection_domain = instanceKlass::cast(holder)->protection_domain(); | |
| 3336 } | |
| 3337 } | |
| 3338 } else { | |
| 3339 klassOop curr_klass_oop = java_lang_Class::as_klassOop(curr_klass()); | |
| 3340 loader = instanceKlass::cast(curr_klass_oop)->class_loader(); | |
| 3341 protection_domain = instanceKlass::cast(curr_klass_oop)->protection_domain(); | |
| 3342 } | |
| 3343 Handle h_loader(THREAD, loader); | |
| 3344 Handle h_prot (THREAD, protection_domain); | |
|
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3345 jclass result = find_class_from_class_loader(env, name, true, h_loader, h_prot, |
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3346 false, thread); |
|
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|
3347 if (TraceClassResolution && result != NULL) { |
|
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|
3348 trace_class_resolution(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(result))); |
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|
3349 } |
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|
3350 return result; |
| 0 | 3351 JVM_END |
| 3352 | |
| 3353 | |
| 3354 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
| 3355 | |
| 3356 | |
| 3357 // resolve array handle and check arguments | |
| 3358 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
| 3359 if (arr == NULL) { | |
| 3360 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 3361 } | |
| 3362 oop a = JNIHandles::resolve_non_null(arr); | |
| 3363 if (!a->is_javaArray() || (type_array_only && !a->is_typeArray())) { | |
| 3364 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); | |
| 3365 } | |
| 3366 return arrayOop(a); | |
| 3367 } | |
| 3368 | |
| 3369 | |
| 3370 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
| 3371 JVMWrapper("JVM_GetArrayLength"); | |
| 3372 arrayOop a = check_array(env, arr, false, CHECK_0); | |
| 3373 return a->length(); | |
| 3374 JVM_END | |
| 3375 | |
| 3376 | |
| 3377 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
| 3378 JVMWrapper("JVM_Array_Get"); | |
| 3379 JvmtiVMObjectAllocEventCollector oam; | |
| 3380 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
| 3381 jvalue value; | |
| 3382 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
| 3383 oop box = Reflection::box(&value, type, CHECK_NULL); | |
| 3384 return JNIHandles::make_local(env, box); | |
| 3385 JVM_END | |
| 3386 | |
| 3387 | |
| 3388 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
| 3389 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
| 3390 jvalue value; | |
| 3391 value.i = 0; // to initialize value before getting used in CHECK | |
| 3392 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
| 3393 assert(a->is_typeArray(), "just checking"); | |
| 3394 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
| 3395 BasicType wide_type = (BasicType) wCode; | |
| 3396 if (type != wide_type) { | |
| 3397 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
| 3398 } | |
| 3399 return value; | |
| 3400 JVM_END | |
| 3401 | |
| 3402 | |
| 3403 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
| 3404 JVMWrapper("JVM_SetArrayElement"); | |
| 3405 arrayOop a = check_array(env, arr, false, CHECK); | |
| 3406 oop box = JNIHandles::resolve(val); | |
| 3407 jvalue value; | |
| 3408 value.i = 0; // to initialize value before getting used in CHECK | |
| 3409 BasicType value_type; | |
| 3410 if (a->is_objArray()) { | |
| 3411 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
| 3412 value_type = Reflection::unbox_for_regular_object(box, &value); | |
| 3413 } else { | |
| 3414 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
| 3415 } | |
| 3416 Reflection::array_set(&value, a, index, value_type, CHECK); | |
| 3417 JVM_END | |
| 3418 | |
| 3419 | |
| 3420 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
| 3421 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
| 3422 arrayOop a = check_array(env, arr, true, CHECK); | |
| 3423 assert(a->is_typeArray(), "just checking"); | |
| 3424 BasicType value_type = (BasicType) vCode; | |
| 3425 Reflection::array_set(&v, a, index, value_type, CHECK); | |
| 3426 JVM_END | |
| 3427 | |
| 3428 | |
| 3429 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
| 3430 JVMWrapper("JVM_NewArray"); | |
| 3431 JvmtiVMObjectAllocEventCollector oam; | |
| 3432 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3433 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
| 3434 return JNIHandles::make_local(env, result); | |
| 3435 JVM_END | |
| 3436 | |
| 3437 | |
| 3438 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
| 3439 JVMWrapper("JVM_NewMultiArray"); | |
| 3440 JvmtiVMObjectAllocEventCollector oam; | |
| 3441 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
| 3442 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3443 assert(dim_array->is_typeArray(), "just checking"); | |
| 3444 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
| 3445 return JNIHandles::make_local(env, result); | |
| 3446 JVM_END | |
| 3447 | |
| 3448 | |
| 3449 // Networking library support //////////////////////////////////////////////////////////////////// | |
| 3450 | |
| 3451 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
| 3452 JVMWrapper("JVM_InitializeSocketLibrary"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3453 return 0; |
| 0 | 3454 JVM_END |
| 3455 | |
| 3456 | |
| 3457 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
| 3458 JVMWrapper("JVM_Socket"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3459 return os::socket(domain, type, protocol); |
| 0 | 3460 JVM_END |
| 3461 | |
| 3462 | |
| 3463 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
| 3464 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
| 3465 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3466 return os::socket_close(fd); |
| 0 | 3467 JVM_END |
| 3468 | |
| 3469 | |
| 3470 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
| 3471 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
| 3472 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3473 return os::socket_shutdown(fd, howto); |
| 0 | 3474 JVM_END |
| 3475 | |
| 3476 | |
| 3477 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3478 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
| 3479 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3480 return os::recv(fd, buf, nBytes, flags); |
| 0 | 3481 JVM_END |
| 3482 | |
| 3483 | |
| 3484 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3485 JVMWrapper2("JVM_Send (0x%x)", fd); | |
| 3486 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3487 return os::send(fd, buf, nBytes, flags); |
| 0 | 3488 JVM_END |
| 3489 | |
| 3490 | |
| 3491 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
| 3492 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
| 3493 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3494 return os::timeout(fd, timeout); |
| 0 | 3495 JVM_END |
| 3496 | |
| 3497 | |
| 3498 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
| 3499 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
| 3500 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3501 return os::listen(fd, count); |
| 0 | 3502 JVM_END |
| 3503 | |
| 3504 | |
| 3505 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
| 3506 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
| 3507 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3508 return os::connect(fd, him, len); |
| 0 | 3509 JVM_END |
| 3510 | |
| 3511 | |
| 3512 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
| 3513 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
| 3514 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3515 return os::bind(fd, him, len); |
| 0 | 3516 JVM_END |
| 3517 | |
| 3518 | |
| 3519 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
| 3520 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
| 3521 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3522 return os::accept(fd, him, (int *)len); |
| 0 | 3523 JVM_END |
| 3524 | |
| 3525 | |
| 3526 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
| 3527 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
| 3528 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3529 return os::recvfrom(fd, buf, nBytes, flags, from, fromlen); |
| 0 | 3530 JVM_END |
| 3531 | |
| 3532 | |
| 3533 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
| 3534 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
| 3535 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3536 return os::get_sock_name(fd, him, len); |
| 0 | 3537 JVM_END |
| 3538 | |
| 3539 | |
| 3540 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
| 3541 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
| 3542 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3543 return os::sendto(fd, buf, len, flags, to, tolen); |
| 0 | 3544 JVM_END |
| 3545 | |
| 3546 | |
| 3547 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
| 3548 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
| 3549 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3550 return os::socket_available(fd, pbytes); |
| 0 | 3551 JVM_END |
| 3552 | |
| 3553 | |
| 3554 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
| 3555 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
| 3556 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3557 return os::get_sock_opt(fd, level, optname, optval, optlen); |
| 0 | 3558 JVM_END |
| 3559 | |
| 3560 | |
| 3561 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
| 3562 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
| 3563 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3564 return os::set_sock_opt(fd, level, optname, optval, optlen); |
| 0 | 3565 JVM_END |
| 3566 | |
| 3567 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) | |
| 3568 JVMWrapper("JVM_GetHostName"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3569 return os::get_host_name(name, namelen); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3570 JVM_END |
| 0 | 3571 |
| 3572 // Library support /////////////////////////////////////////////////////////////////////////// | |
| 3573 | |
| 3574 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
| 3575 //%note jvm_ct | |
| 3576 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
| 3577 char ebuf[1024]; | |
| 3578 void *load_result; | |
| 3579 { | |
| 3580 ThreadToNativeFromVM ttnfvm(thread); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3581 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
| 0 | 3582 } |
| 3583 if (load_result == NULL) { | |
| 3584 char msg[1024]; | |
| 3585 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
| 3586 // Since 'ebuf' may contain a string encoded using | |
| 3587 // platform encoding scheme, we need to pass | |
| 3588 // Exceptions::unsafe_to_utf8 to the new_exception method | |
| 3589 // as the last argument. See bug 6367357. | |
| 3590 Handle h_exception = | |
| 3591 Exceptions::new_exception(thread, | |
| 3592 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
| 3593 msg, Exceptions::unsafe_to_utf8); | |
| 3594 | |
| 3595 THROW_HANDLE_0(h_exception); | |
| 3596 } | |
| 3597 return load_result; | |
| 3598 JVM_END | |
| 3599 | |
| 3600 | |
| 3601 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
| 3602 JVMWrapper("JVM_UnloadLibrary"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3603 os::dll_unload(handle); |
| 0 | 3604 JVM_END |
| 3605 | |
| 3606 | |
| 3607 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
| 3608 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3609 return os::dll_lookup(handle, name); |
| 0 | 3610 JVM_END |
| 3611 | |
| 3612 // Floating point support //////////////////////////////////////////////////////////////////// | |
| 3613 | |
| 3614 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
| 3615 JVMWrapper("JVM_IsNaN"); | |
| 3616 return g_isnan(a); | |
| 3617 JVM_END | |
| 3618 | |
| 3619 | |
| 3620 | |
| 3621 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
| 3622 | |
| 3623 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
| 3624 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
| 3625 return Threads::is_supported_jni_version_including_1_1(version); | |
| 3626 JVM_END | |
| 3627 | |
| 3628 | |
| 3629 // String support /////////////////////////////////////////////////////////////////////////// | |
| 3630 | |
| 3631 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
| 3632 JVMWrapper("JVM_InternString"); | |
| 3633 JvmtiVMObjectAllocEventCollector oam; | |
| 3634 if (str == NULL) return NULL; | |
| 3635 oop string = JNIHandles::resolve_non_null(str); | |
| 3636 oop result = StringTable::intern(string, CHECK_NULL); | |
| 3637 return (jstring) JNIHandles::make_local(env, result); | |
| 3638 JVM_END | |
| 3639 | |
| 3640 | |
| 3641 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
| 3642 | |
| 3643 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
| 3644 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
| 3645 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
| 3646 // that only works with java threads. | |
| 3647 | |
| 3648 | |
| 3649 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
| 3650 VM_Exit::block_if_vm_exited(); | |
| 3651 JVMWrapper("JVM_RawMonitorCreate"); | |
| 3652 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
| 3653 } | |
| 3654 | |
| 3655 | |
| 3656 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
| 3657 VM_Exit::block_if_vm_exited(); | |
| 3658 JVMWrapper("JVM_RawMonitorDestroy"); | |
| 3659 delete ((Mutex*) mon); | |
| 3660 } | |
| 3661 | |
| 3662 | |
| 3663 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
| 3664 VM_Exit::block_if_vm_exited(); | |
| 3665 JVMWrapper("JVM_RawMonitorEnter"); | |
| 3666 ((Mutex*) mon)->jvm_raw_lock(); | |
| 3667 return 0; | |
| 3668 } | |
| 3669 | |
| 3670 | |
| 3671 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
| 3672 VM_Exit::block_if_vm_exited(); | |
| 3673 JVMWrapper("JVM_RawMonitorExit"); | |
| 3674 ((Mutex*) mon)->jvm_raw_unlock(); | |
| 3675 } | |
| 3676 | |
| 3677 | |
| 3678 // Support for Serialization | |
| 3679 | |
| 3680 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
| 3681 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
| 3682 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
| 3683 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
| 3684 | |
| 3685 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
| 3686 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
| 3687 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
| 3688 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
| 3689 | |
| 3690 | |
| 3691 void initialize_converter_functions() { | |
| 3692 if (JDK_Version::is_gte_jdk14x_version()) { | |
| 3693 // These functions only exist for compatibility with 1.3.1 and earlier | |
| 3694 return; | |
| 3695 } | |
| 3696 | |
| 3697 // called from universe_post_init() | |
| 3698 assert( | |
| 3699 int_bits_to_float_fn == NULL && | |
| 3700 long_bits_to_double_fn == NULL && | |
| 3701 float_to_int_bits_fn == NULL && | |
| 3702 double_to_long_bits_fn == NULL , | |
| 3703 "initialization done twice" | |
| 3704 ); | |
| 3705 // initialize | |
| 3706 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
| 3707 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
| 3708 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
| 3709 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
| 3710 // verify | |
| 3711 assert( | |
| 3712 int_bits_to_float_fn != NULL && | |
| 3713 long_bits_to_double_fn != NULL && | |
| 3714 float_to_int_bits_fn != NULL && | |
| 3715 double_to_long_bits_fn != NULL , | |
| 3716 "initialization failed" | |
| 3717 ); | |
| 3718 } | |
| 3719 | |
| 3720 | |
| 3721 // Serialization | |
| 3722 JVM_ENTRY(void, JVM_SetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
| 3723 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
| 3724 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
| 3725 | |
| 3726 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
| 3727 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
| 3728 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
| 3729 oop o = JNIHandles::resolve(obj); | |
| 3730 | |
| 3731 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
| 3732 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 3733 } | |
| 3734 | |
| 3735 jsize nfids = fids->length(); | |
| 3736 if (nfids == 0) return; | |
| 3737 | |
| 3738 if (tcodes->length() < nfids) { | |
| 3739 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
| 3740 } | |
| 3741 | |
| 3742 jsize off = 0; | |
| 3743 /* loop through fields, setting values */ | |
| 3744 for (jsize i = 0; i < nfids; i++) { | |
| 3745 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
| 3746 int field_offset; | |
| 3747 if (fid != NULL) { | |
| 3748 // NULL is a legal value for fid, but retrieving the field offset | |
| 3749 // trigger assertion in that case | |
| 3750 field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 3751 } | |
| 3752 | |
| 3753 switch (tcodes->char_at(i)) { | |
| 3754 case 'Z': | |
| 3755 if (fid != NULL) { | |
| 3756 jboolean val = (dbuf->byte_at(off) != 0) ? JNI_TRUE : JNI_FALSE; | |
| 3757 o->bool_field_put(field_offset, val); | |
| 3758 } | |
| 3759 off++; | |
| 3760 break; | |
| 3761 | |
| 3762 case 'B': | |
| 3763 if (fid != NULL) { | |
| 3764 o->byte_field_put(field_offset, dbuf->byte_at(off)); | |
| 3765 } | |
| 3766 off++; | |
| 3767 break; | |
| 3768 | |
| 3769 case 'C': | |
| 3770 if (fid != NULL) { | |
| 3771 jchar val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
| 3772 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
| 3773 o->char_field_put(field_offset, val); | |
| 3774 } | |
| 3775 off += 2; | |
| 3776 break; | |
| 3777 | |
| 3778 case 'S': | |
| 3779 if (fid != NULL) { | |
| 3780 jshort val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
| 3781 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
| 3782 o->short_field_put(field_offset, val); | |
| 3783 } | |
| 3784 off += 2; | |
| 3785 break; | |
| 3786 | |
| 3787 case 'I': | |
| 3788 if (fid != NULL) { | |
| 3789 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
| 3790 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
| 3791 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
| 3792 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
| 3793 o->int_field_put(field_offset, ival); | |
| 3794 } | |
| 3795 off += 4; | |
| 3796 break; | |
| 3797 | |
| 3798 case 'F': | |
| 3799 if (fid != NULL) { | |
| 3800 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
| 3801 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
| 3802 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
| 3803 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
| 3804 jfloat fval = (*int_bits_to_float_fn)(env, NULL, ival); | |
| 3805 o->float_field_put(field_offset, fval); | |
| 3806 } | |
| 3807 off += 4; | |
| 3808 break; | |
| 3809 | |
| 3810 case 'J': | |
| 3811 if (fid != NULL) { | |
| 3812 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
| 3813 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
| 3814 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
| 3815 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
| 3816 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
| 3817 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
| 3818 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
| 3819 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
| 3820 o->long_field_put(field_offset, lval); | |
| 3821 } | |
| 3822 off += 8; | |
| 3823 break; | |
| 3824 | |
| 3825 case 'D': | |
| 3826 if (fid != NULL) { | |
| 3827 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
| 3828 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
| 3829 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
| 3830 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
| 3831 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
| 3832 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
| 3833 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
| 3834 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
| 3835 jdouble dval = (*long_bits_to_double_fn)(env, NULL, lval); | |
| 3836 o->double_field_put(field_offset, dval); | |
| 3837 } | |
| 3838 off += 8; | |
| 3839 break; | |
| 3840 | |
| 3841 default: | |
| 3842 // Illegal typecode | |
| 3843 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
| 3844 } | |
| 3845 } | |
| 3846 JVM_END | |
| 3847 | |
| 3848 | |
| 3849 JVM_ENTRY(void, JVM_GetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
| 3850 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
| 3851 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
| 3852 | |
| 3853 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
| 3854 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
| 3855 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
| 3856 oop o = JNIHandles::resolve(obj); | |
| 3857 | |
| 3858 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
| 3859 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 3860 } | |
| 3861 | |
| 3862 jsize nfids = fids->length(); | |
| 3863 if (nfids == 0) return; | |
| 3864 | |
| 3865 if (tcodes->length() < nfids) { | |
| 3866 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
| 3867 } | |
| 3868 | |
| 3869 /* loop through fields, fetching values */ | |
| 3870 jsize off = 0; | |
| 3871 for (jsize i = 0; i < nfids; i++) { | |
| 3872 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
| 3873 if (fid == NULL) { | |
| 3874 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 3875 } | |
| 3876 int field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 3877 | |
| 3878 switch (tcodes->char_at(i)) { | |
| 3879 case 'Z': | |
| 3880 { | |
| 3881 jboolean val = o->bool_field(field_offset); | |
| 3882 dbuf->byte_at_put(off++, (val != 0) ? 1 : 0); | |
| 3883 } | |
| 3884 break; | |
| 3885 | |
| 3886 case 'B': | |
| 3887 dbuf->byte_at_put(off++, o->byte_field(field_offset)); | |
| 3888 break; | |
| 3889 | |
| 3890 case 'C': | |
| 3891 { | |
| 3892 jchar val = o->char_field(field_offset); | |
| 3893 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 3894 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 3895 } | |
| 3896 break; | |
| 3897 | |
| 3898 case 'S': | |
| 3899 { | |
| 3900 jshort val = o->short_field(field_offset); | |
| 3901 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 3902 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 3903 } | |
| 3904 break; | |
| 3905 | |
| 3906 case 'I': | |
| 3907 { | |
| 3908 jint val = o->int_field(field_offset); | |
| 3909 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
| 3910 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
| 3911 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 3912 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 3913 } | |
| 3914 break; | |
| 3915 | |
| 3916 case 'F': | |
| 3917 { | |
| 3918 jfloat fval = o->float_field(field_offset); | |
| 3919 jint ival = (*float_to_int_bits_fn)(env, NULL, fval); | |
| 3920 dbuf->byte_at_put(off++, (ival >> 24) & 0xFF); | |
| 3921 dbuf->byte_at_put(off++, (ival >> 16) & 0xFF); | |
| 3922 dbuf->byte_at_put(off++, (ival >> 8) & 0xFF); | |
| 3923 dbuf->byte_at_put(off++, (ival >> 0) & 0xFF); | |
| 3924 } | |
| 3925 break; | |
| 3926 | |
| 3927 case 'J': | |
| 3928 { | |
| 3929 jlong val = o->long_field(field_offset); | |
| 3930 dbuf->byte_at_put(off++, (val >> 56) & 0xFF); | |
| 3931 dbuf->byte_at_put(off++, (val >> 48) & 0xFF); | |
| 3932 dbuf->byte_at_put(off++, (val >> 40) & 0xFF); | |
| 3933 dbuf->byte_at_put(off++, (val >> 32) & 0xFF); | |
| 3934 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
| 3935 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
| 3936 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 3937 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 3938 } | |
| 3939 break; | |
| 3940 | |
| 3941 case 'D': | |
| 3942 { | |
| 3943 jdouble dval = o->double_field(field_offset); | |
| 3944 jlong lval = (*double_to_long_bits_fn)(env, NULL, dval); | |
| 3945 dbuf->byte_at_put(off++, (lval >> 56) & 0xFF); | |
| 3946 dbuf->byte_at_put(off++, (lval >> 48) & 0xFF); | |
| 3947 dbuf->byte_at_put(off++, (lval >> 40) & 0xFF); | |
| 3948 dbuf->byte_at_put(off++, (lval >> 32) & 0xFF); | |
| 3949 dbuf->byte_at_put(off++, (lval >> 24) & 0xFF); | |
| 3950 dbuf->byte_at_put(off++, (lval >> 16) & 0xFF); | |
| 3951 dbuf->byte_at_put(off++, (lval >> 8) & 0xFF); | |
| 3952 dbuf->byte_at_put(off++, (lval >> 0) & 0xFF); | |
| 3953 } | |
| 3954 break; | |
| 3955 | |
| 3956 default: | |
| 3957 // Illegal typecode | |
| 3958 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
| 3959 } | |
| 3960 } | |
| 3961 JVM_END | |
| 3962 | |
| 3963 | |
| 3964 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
| 3965 | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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diff
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|
3966 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS) { |
| 0 | 3967 // Security Note: |
| 3968 // The Java level wrapper will perform the necessary security check allowing | |
| 3969 // us to pass the NULL as the initiating class loader. | |
| 3970 klassOop klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); | |
|
878
abe076e3636f
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875
diff
changeset
|
3971 |
| 0 | 3972 KlassHandle klass_handle(THREAD, klass); |
| 3973 // Check if we should initialize the class | |
| 3974 if (init && klass_handle->oop_is_instance()) { | |
| 3975 klass_handle->initialize(CHECK_NULL); | |
| 3976 } | |
| 3977 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
| 3978 } | |
| 3979 | |
| 3980 | |
| 3981 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
| 3982 | |
| 3983 #ifndef PRODUCT | |
| 3984 | |
| 3985 extern "C" { | |
| 3986 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
| 3987 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
| 3988 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
| 3989 } | |
| 3990 | |
| 3991 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
| 3992 JVMWrapper("JVM_AccessBoolVMFlag"); | |
| 3993 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, INTERNAL); | |
| 3994 JVM_END | |
| 3995 | |
| 3996 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
| 3997 JVMWrapper("JVM_AccessVMIntFlag"); | |
| 3998 intx v; | |
| 3999 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, INTERNAL); | |
| 4000 *value = (jint)v; | |
| 4001 return result; | |
| 4002 JVM_END | |
| 4003 | |
| 4004 | |
| 4005 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
| 4006 JVMWrapper("JVM_VMBreakPoint"); | |
| 4007 oop the_obj = JNIHandles::resolve(obj); | |
| 4008 BREAKPOINT; | |
| 4009 JVM_END | |
| 4010 | |
| 4011 | |
| 4012 #endif | |
| 4013 | |
| 4014 | |
| 4015 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4016 | |
| 4017 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
| 4018 JVMWrapper("JVM_InvokeMethod"); | |
| 4019 Handle method_handle; | |
| 4020 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
| 4021 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
| 4022 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
| 4023 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4024 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
| 4025 jobject res = JNIHandles::make_local(env, result); | |
| 4026 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4027 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
| 4028 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
| 4029 if (java_lang_Class::is_primitive(ret_type)) { | |
| 4030 // Only for primitive type vm allocates memory for java object. | |
| 4031 // See box() method. | |
| 4032 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4033 } | |
| 4034 } | |
| 4035 return res; | |
| 4036 } else { | |
| 4037 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
| 4038 } | |
| 4039 JVM_END | |
| 4040 | |
| 4041 | |
| 4042 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
| 4043 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
| 4044 oop constructor_mirror = JNIHandles::resolve(c); | |
| 4045 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4046 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
| 4047 jobject res = JNIHandles::make_local(env, result); | |
| 4048 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4049 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4050 } | |
| 4051 return res; | |
| 4052 JVM_END | |
| 4053 | |
| 4054 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4055 | |
| 4056 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
| 4057 JVMWrapper("JVM_SupportsCX8"); | |
| 4058 return VM_Version::supports_cx8(); | |
| 4059 JVM_END | |
| 4060 | |
| 4061 | |
| 4062 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
| 4063 JVMWrapper("JVM_CX8Field"); | |
| 4064 jlong res; | |
| 4065 oop o = JNIHandles::resolve(obj); | |
| 4066 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 4067 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
| 4068 | |
| 4069 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
| 4070 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
| 4071 | |
| 4072 return res == oldVal; | |
| 4073 JVM_END | |
| 4074 | |
|
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|
4075 // DTrace /////////////////////////////////////////////////////////////////// |
|
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diff
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|
4076 |
|
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diff
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|
4077 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
|
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|
4078 JVMWrapper("JVM_DTraceGetVersion"); |
|
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0
diff
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|
4079 return (jint)JVM_TRACING_DTRACE_VERSION; |
|
018d5b58dd4f
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0
diff
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|
4080 JVM_END |
|
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0
diff
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|
4081 |
|
018d5b58dd4f
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0
diff
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|
4082 JVM_ENTRY(jlong,JVM_DTraceActivate( |
|
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|
4083 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
|
018d5b58dd4f
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diff
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|
4084 JVM_DTraceProvider* providers)) |
|
018d5b58dd4f
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0
diff
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|
4085 JVMWrapper("JVM_DTraceActivate"); |
|
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diff
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|
4086 return DTraceJSDT::activate( |
|
018d5b58dd4f
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0
diff
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|
4087 version, module_name, providers_count, providers, CHECK_0); |
|
018d5b58dd4f
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diff
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|
4088 JVM_END |
|
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diff
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|
4089 |
|
018d5b58dd4f
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diff
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|
4090 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
|
018d5b58dd4f
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|
4091 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
|
018d5b58dd4f
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diff
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|
4092 return DTraceJSDT::is_probe_enabled(method); |
|
018d5b58dd4f
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diff
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|
4093 JVM_END |
|
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|
4094 |
|
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|
4095 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
|
018d5b58dd4f
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diff
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|
4096 JVMWrapper("JVM_DTraceDispose"); |
|
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diff
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|
4097 DTraceJSDT::dispose(handle); |
|
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|
4098 JVM_END |
|
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|
4099 |
|
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|
4100 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
|
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|
4101 JVMWrapper("JVM_DTraceIsSupported"); |
|
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diff
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|
4102 return DTraceJSDT::is_supported(); |
|
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|
4103 JVM_END |
|
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|
4104 |
| 0 | 4105 // Returns an array of all live Thread objects (VM internal JavaThreads, |
| 4106 // jvmti agent threads, and JNI attaching threads are skipped) | |
| 4107 // See CR 6404306 regarding JNI attaching threads | |
| 4108 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
| 4109 ResourceMark rm(THREAD); | |
| 4110 ThreadsListEnumerator tle(THREAD, false, false); | |
| 4111 JvmtiVMObjectAllocEventCollector oam; | |
| 4112 | |
| 4113 int num_threads = tle.num_threads(); | |
| 1142 | 4114 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
| 0 | 4115 objArrayHandle threads_ah(THREAD, r); |
| 4116 | |
| 4117 for (int i = 0; i < num_threads; i++) { | |
| 4118 Handle h = tle.get_threadObj(i); | |
| 4119 threads_ah->obj_at_put(i, h()); | |
| 4120 } | |
| 4121 | |
| 4122 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
| 4123 JVM_END | |
| 4124 | |
| 4125 | |
| 4126 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
| 4127 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
| 4128 // the corresponding entry in the given threads array | |
| 4129 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
| 4130 JVMWrapper("JVM_DumpThreads"); | |
| 4131 JvmtiVMObjectAllocEventCollector oam; | |
| 4132 | |
| 4133 // Check if threads is null | |
| 4134 if (threads == NULL) { | |
| 4135 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4136 } | |
| 4137 | |
| 4138 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
| 4139 objArrayHandle ah(THREAD, a); | |
| 4140 int num_threads = ah->length(); | |
| 4141 // check if threads is non-empty array | |
| 4142 if (num_threads == 0) { | |
| 4143 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
| 4144 } | |
| 4145 | |
| 4146 // check if threads is not an array of objects of Thread class | |
| 4147 klassOop k = objArrayKlass::cast(ah->klass())->element_klass(); | |
| 1142 | 4148 if (k != SystemDictionary::Thread_klass()) { |
| 0 | 4149 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
| 4150 } | |
| 4151 | |
| 4152 ResourceMark rm(THREAD); | |
| 4153 | |
| 4154 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
| 4155 for (int i = 0; i < num_threads; i++) { | |
| 4156 oop thread_obj = ah->obj_at(i); | |
| 4157 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
| 4158 thread_handle_array->append(h); | |
| 4159 } | |
| 4160 | |
| 4161 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
| 4162 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
| 4163 | |
| 4164 JVM_END | |
| 4165 | |
| 4166 // JVM monitoring and management support | |
| 4167 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
| 4168 return Management::get_jmm_interface(version); | |
| 4169 JVM_END | |
| 4170 | |
| 4171 // com.sun.tools.attach.VirtualMachine agent properties support | |
| 4172 // | |
| 4173 // Initialize the agent properties with the properties maintained in the VM | |
| 4174 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
| 4175 JVMWrapper("JVM_InitAgentProperties"); | |
| 4176 ResourceMark rm; | |
| 4177 | |
| 4178 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
| 4179 | |
| 4180 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
| 4181 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
| 4182 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
| 4183 return properties; | |
| 4184 JVM_END | |
| 4185 | |
| 4186 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
| 4187 { | |
| 4188 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
| 4189 JvmtiVMObjectAllocEventCollector oam; | |
| 4190 | |
| 4191 if (ofClass == NULL) { | |
| 4192 return NULL; | |
| 4193 } | |
| 4194 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
| 4195 // Special handling for primitive objects | |
| 4196 if (java_lang_Class::is_primitive(mirror())) { | |
| 4197 return NULL; | |
| 4198 } | |
| 4199 klassOop k = java_lang_Class::as_klassOop(mirror()); | |
| 4200 if (!Klass::cast(k)->oop_is_instance()) { | |
| 4201 return NULL; | |
| 4202 } | |
| 4203 instanceKlassHandle ik_h(THREAD, k); | |
| 4204 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
| 4205 if (encl_method_class_idx == 0) { | |
| 4206 return NULL; | |
| 4207 } | |
| 1142 | 4208 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
| 0 | 4209 objArrayHandle dest(THREAD, dest_o); |
| 4210 klassOop enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); | |
| 4211 dest->obj_at_put(0, Klass::cast(enc_k)->java_mirror()); | |
| 4212 int encl_method_method_idx = ik_h->enclosing_method_method_index(); | |
| 4213 if (encl_method_method_idx != 0) { | |
|
2177
3582bf76420e
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coleenp
parents:
2162
diff
changeset
|
4214 Symbol* sym = ik_h->constants()->symbol_at( |
| 0 | 4215 extract_low_short_from_int( |
| 4216 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4217 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4218 dest->obj_at_put(1, str()); | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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parents:
2162
diff
changeset
|
4219 sym = ik_h->constants()->symbol_at( |
| 0 | 4220 extract_high_short_from_int( |
| 4221 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4222 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4223 dest->obj_at_put(2, str()); | |
| 4224 } | |
| 4225 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 4226 } | |
| 4227 JVM_END | |
| 4228 | |
| 4229 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
| 4230 jint javaThreadState)) | |
| 4231 { | |
| 4232 // If new thread states are added in future JDK and VM versions, | |
| 4233 // this should check if the JDK version is compatible with thread | |
| 4234 // states supported by the VM. Return NULL if not compatible. | |
| 4235 // | |
| 4236 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4237 // to the Java thread state that the JDK supports. | |
| 4238 // | |
| 4239 | |
| 4240 typeArrayHandle values_h; | |
| 4241 switch (javaThreadState) { | |
| 4242 case JAVA_THREAD_STATE_NEW : { | |
| 4243 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4244 values_h = typeArrayHandle(THREAD, r); | |
| 4245 values_h->int_at_put(0, java_lang_Thread::NEW); | |
| 4246 break; | |
| 4247 } | |
| 4248 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4249 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4250 values_h = typeArrayHandle(THREAD, r); | |
| 4251 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
| 4252 break; | |
| 4253 } | |
| 4254 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4255 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4256 values_h = typeArrayHandle(THREAD, r); | |
| 4257 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
| 4258 break; | |
| 4259 } | |
| 4260 case JAVA_THREAD_STATE_WAITING : { | |
| 4261 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
| 4262 values_h = typeArrayHandle(THREAD, r); | |
| 4263 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
| 4264 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
| 4265 break; | |
| 4266 } | |
| 4267 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4268 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
| 4269 values_h = typeArrayHandle(THREAD, r); | |
| 4270 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
| 4271 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
| 4272 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
| 4273 break; | |
| 4274 } | |
| 4275 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4276 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4277 values_h = typeArrayHandle(THREAD, r); | |
| 4278 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
| 4279 break; | |
| 4280 } | |
| 4281 default: | |
| 4282 // Unknown state - probably incompatible JDK version | |
| 4283 return NULL; | |
| 4284 } | |
| 4285 | |
| 4286 return (jintArray) JNIHandles::make_local(env, values_h()); | |
| 4287 } | |
| 4288 JVM_END | |
| 4289 | |
| 4290 | |
| 4291 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
| 4292 jint javaThreadState, | |
| 4293 jintArray values)) | |
| 4294 { | |
| 4295 // If new thread states are added in future JDK and VM versions, | |
| 4296 // this should check if the JDK version is compatible with thread | |
| 4297 // states supported by the VM. Return NULL if not compatible. | |
| 4298 // | |
| 4299 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4300 // to the Java thread state that the JDK supports. | |
| 4301 // | |
| 4302 | |
| 4303 ResourceMark rm; | |
| 4304 | |
| 4305 // Check if threads is null | |
| 4306 if (values == NULL) { | |
| 4307 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4308 } | |
| 4309 | |
| 4310 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
| 4311 typeArrayHandle values_h(THREAD, v); | |
| 4312 | |
| 4313 objArrayHandle names_h; | |
| 4314 switch (javaThreadState) { | |
| 4315 case JAVA_THREAD_STATE_NEW : { | |
| 4316 assert(values_h->length() == 1 && | |
| 4317 values_h->int_at(0) == java_lang_Thread::NEW, | |
| 4318 "Invalid threadStatus value"); | |
| 4319 | |
| 1142 | 4320 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4321 1, /* only 1 substate */ |
| 4322 CHECK_NULL); | |
| 4323 names_h = objArrayHandle(THREAD, r); | |
| 4324 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
| 4325 names_h->obj_at_put(0, name()); | |
| 4326 break; | |
| 4327 } | |
| 4328 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4329 assert(values_h->length() == 1 && | |
| 4330 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
| 4331 "Invalid threadStatus value"); | |
| 4332 | |
| 1142 | 4333 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4334 1, /* only 1 substate */ |
| 4335 CHECK_NULL); | |
| 4336 names_h = objArrayHandle(THREAD, r); | |
| 4337 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
| 4338 names_h->obj_at_put(0, name()); | |
| 4339 break; | |
| 4340 } | |
| 4341 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4342 assert(values_h->length() == 1 && | |
| 4343 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
| 4344 "Invalid threadStatus value"); | |
| 4345 | |
| 1142 | 4346 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4347 1, /* only 1 substate */ |
| 4348 CHECK_NULL); | |
| 4349 names_h = objArrayHandle(THREAD, r); | |
| 4350 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
| 4351 names_h->obj_at_put(0, name()); | |
| 4352 break; | |
| 4353 } | |
| 4354 case JAVA_THREAD_STATE_WAITING : { | |
| 4355 assert(values_h->length() == 2 && | |
| 4356 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
| 4357 values_h->int_at(1) == java_lang_Thread::PARKED, | |
| 4358 "Invalid threadStatus value"); | |
| 1142 | 4359 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4360 2, /* number of substates */ |
| 4361 CHECK_NULL); | |
| 4362 names_h = objArrayHandle(THREAD, r); | |
| 4363 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
| 4364 CHECK_NULL); | |
| 4365 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
| 4366 CHECK_NULL); | |
| 4367 names_h->obj_at_put(0, name0()); | |
| 4368 names_h->obj_at_put(1, name1()); | |
| 4369 break; | |
| 4370 } | |
| 4371 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4372 assert(values_h->length() == 3 && | |
| 4373 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
| 4374 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
| 4375 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
| 4376 "Invalid threadStatus value"); | |
| 1142 | 4377 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4378 3, /* number of substates */ |
| 4379 CHECK_NULL); | |
| 4380 names_h = objArrayHandle(THREAD, r); | |
| 4381 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
| 4382 CHECK_NULL); | |
| 4383 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
| 4384 CHECK_NULL); | |
| 4385 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
| 4386 CHECK_NULL); | |
| 4387 names_h->obj_at_put(0, name0()); | |
| 4388 names_h->obj_at_put(1, name1()); | |
| 4389 names_h->obj_at_put(2, name2()); | |
| 4390 break; | |
| 4391 } | |
| 4392 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4393 assert(values_h->length() == 1 && | |
| 4394 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
| 4395 "Invalid threadStatus value"); | |
| 1142 | 4396 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4397 1, /* only 1 substate */ |
| 4398 CHECK_NULL); | |
| 4399 names_h = objArrayHandle(THREAD, r); | |
| 4400 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
| 4401 names_h->obj_at_put(0, name()); | |
| 4402 break; | |
| 4403 } | |
| 4404 default: | |
| 4405 // Unknown state - probably incompatible JDK version | |
| 4406 return NULL; | |
| 4407 } | |
| 4408 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
| 4409 } | |
| 4410 JVM_END | |
| 4411 | |
| 4412 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
| 4413 { | |
| 4414 memset(info, 0, sizeof(info_size)); | |
| 4415 | |
| 4416 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
| 4417 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4418 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4419 | |
| 4420 // when we add a new capability in the jvm_version_info struct, we should also | |
| 4421 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
| 4422 // counter defined in runtimeService.cpp. | |
| 4423 info->is_attachable = AttachListener::is_attach_supported(); | |
| 4424 #ifdef KERNEL | |
| 4425 info->is_kernel_jvm = 1; // true; | |
| 4426 #else // KERNEL | |
| 4427 info->is_kernel_jvm = 0; // false; | |
| 4428 #endif // KERNEL | |
| 4429 } | |
| 4430 JVM_END |