Mercurial > hg > truffle
annotate src/share/vm/prims/jvm.cpp @ 12355:cefad50507d8
Merge with hs25-b53
| author | Gilles Duboscq <duboscq@ssw.jku.at> |
|---|---|
| date | Fri, 11 Oct 2013 10:38:03 +0200 |
| parents | e636d62005c3 a07c25e4f67e |
| children | 096c224171c4 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2013, 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" | |
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33 #include "interpreter/bytecode.hpp" |
| 1972 | 34 #include "memory/oopFactory.hpp" |
| 35 #include "memory/universe.inline.hpp" | |
| 3938 | 36 #include "oops/fieldStreams.hpp" |
| 1972 | 37 #include "oops/instanceKlass.hpp" |
| 38 #include "oops/objArrayKlass.hpp" | |
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39 #include "oops/method.hpp" |
| 1972 | 40 #include "prims/jvm.h" |
| 41 #include "prims/jvm_misc.hpp" | |
| 42 #include "prims/jvmtiExport.hpp" | |
| 43 #include "prims/jvmtiThreadState.hpp" | |
| 44 #include "prims/nativeLookup.hpp" | |
| 45 #include "prims/privilegedStack.hpp" | |
| 46 #include "runtime/arguments.hpp" | |
| 47 #include "runtime/dtraceJSDT.hpp" | |
| 48 #include "runtime/handles.inline.hpp" | |
| 49 #include "runtime/init.hpp" | |
| 50 #include "runtime/interfaceSupport.hpp" | |
| 51 #include "runtime/java.hpp" | |
| 52 #include "runtime/javaCalls.hpp" | |
| 53 #include "runtime/jfieldIDWorkaround.hpp" | |
| 54 #include "runtime/os.hpp" | |
| 55 #include "runtime/perfData.hpp" | |
| 56 #include "runtime/reflection.hpp" | |
| 57 #include "runtime/vframe.hpp" | |
| 58 #include "runtime/vm_operations.hpp" | |
| 59 #include "services/attachListener.hpp" | |
| 60 #include "services/management.hpp" | |
| 61 #include "services/threadService.hpp" | |
| 10405 | 62 #include "trace/tracing.hpp" |
| 1972 | 63 #include "utilities/copy.hpp" |
| 64 #include "utilities/defaultStream.hpp" | |
| 65 #include "utilities/dtrace.hpp" | |
| 66 #include "utilities/events.hpp" | |
| 67 #include "utilities/histogram.hpp" | |
| 68 #include "utilities/top.hpp" | |
| 69 #include "utilities/utf8.hpp" | |
| 70 #ifdef TARGET_OS_FAMILY_linux | |
| 71 # include "jvm_linux.h" | |
| 72 #endif | |
| 73 #ifdef TARGET_OS_FAMILY_solaris | |
| 74 # include "jvm_solaris.h" | |
| 75 #endif | |
| 76 #ifdef TARGET_OS_FAMILY_windows | |
| 77 # include "jvm_windows.h" | |
| 78 #endif | |
| 3960 | 79 #ifdef TARGET_OS_FAMILY_bsd |
| 80 # include "jvm_bsd.h" | |
| 81 #endif | |
| 1972 | 82 |
| 0 | 83 #include <errno.h> |
| 84 | |
| 4006 | 85 #ifndef USDT2 |
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86 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__begin, long long); |
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87 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__end, int); |
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88 HS_DTRACE_PROBE_DECL0(hotspot, thread__yield); |
| 4006 | 89 #endif /* !USDT2 */ |
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90 |
| 0 | 91 /* |
| 92 NOTE about use of any ctor or function call that can trigger a safepoint/GC: | |
| 93 such ctors and calls MUST NOT come between an oop declaration/init and its | |
| 94 usage because if objects are move this may cause various memory stomps, bus | |
| 95 errors and segfaults. Here is a cookbook for causing so called "naked oop | |
| 96 failures": | |
| 97 | |
| 98 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> { | |
| 99 JVMWrapper("JVM_GetClassDeclaredFields"); | |
| 100 | |
| 101 // Object address to be held directly in mirror & not visible to GC | |
| 102 oop mirror = JNIHandles::resolve_non_null(ofClass); | |
| 103 | |
| 104 // If this ctor can hit a safepoint, moving objects around, then | |
| 105 ComplexConstructor foo; | |
| 106 | |
| 107 // Boom! mirror may point to JUNK instead of the intended object | |
| 108 (some dereference of mirror) | |
| 109 | |
| 110 // Here's another call that may block for GC, making mirror stale | |
| 111 MutexLocker ml(some_lock); | |
| 112 | |
| 113 // And here's an initializer that can result in a stale oop | |
| 114 // all in one step. | |
| 115 oop o = call_that_can_throw_exception(TRAPS); | |
| 116 | |
| 117 | |
| 118 The solution is to keep the oop declaration BELOW the ctor or function | |
| 119 call that might cause a GC, do another resolve to reassign the oop, or | |
| 120 consider use of a Handle instead of an oop so there is immunity from object | |
| 121 motion. But note that the "QUICK" entries below do not have a handlemark | |
| 122 and thus can only support use of handles passed in. | |
| 123 */ | |
| 124 | |
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125 static void trace_class_resolution_impl(Klass* to_class, TRAPS) { |
| 0 | 126 ResourceMark rm; |
| 127 int line_number = -1; | |
| 128 const char * source_file = NULL; | |
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129 const char * trace = "explicit"; |
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130 InstanceKlass* caller = NULL; |
| 0 | 131 JavaThread* jthread = JavaThread::current(); |
| 132 if (jthread->has_last_Java_frame()) { | |
| 133 vframeStream vfst(jthread); | |
| 134 | |
| 135 // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames | |
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136 TempNewSymbol access_controller = SymbolTable::new_symbol("java/security/AccessController", CHECK); |
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137 Klass* access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); |
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138 TempNewSymbol privileged_action = SymbolTable::new_symbol("java/security/PrivilegedAction", CHECK); |
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139 Klass* privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); |
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140 |
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141 Method* last_caller = NULL; |
| 0 | 142 |
| 143 while (!vfst.at_end()) { | |
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144 Method* m = vfst.method(); |
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145 if (!vfst.method()->method_holder()->is_subclass_of(SystemDictionary::ClassLoader_klass())&& |
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146 !vfst.method()->method_holder()->is_subclass_of(access_controller_klass) && |
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147 !vfst.method()->method_holder()->is_subclass_of(privileged_action_klass)) { |
| 0 | 148 break; |
| 149 } | |
| 150 last_caller = m; | |
| 151 vfst.next(); | |
| 152 } | |
| 153 // if this is called from Class.forName0 and that is called from Class.forName, | |
| 154 // then print the caller of Class.forName. If this is Class.loadClass, then print | |
| 155 // that caller, otherwise keep quiet since this should be picked up elsewhere. | |
| 156 bool found_it = false; | |
| 157 if (!vfst.at_end() && | |
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158 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
| 0 | 159 vfst.method()->name() == vmSymbols::forName0_name()) { |
| 160 vfst.next(); | |
| 161 if (!vfst.at_end() && | |
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162 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
| 0 | 163 vfst.method()->name() == vmSymbols::forName_name()) { |
| 164 vfst.next(); | |
| 165 found_it = true; | |
| 166 } | |
| 167 } else if (last_caller != NULL && | |
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168 last_caller->method_holder()->name() == |
| 0 | 169 vmSymbols::java_lang_ClassLoader() && |
| 170 (last_caller->name() == vmSymbols::loadClassInternal_name() || | |
| 171 last_caller->name() == vmSymbols::loadClass_name())) { | |
| 172 found_it = true; | |
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173 } else if (!vfst.at_end()) { |
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174 if (vfst.method()->is_native()) { |
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175 // JNI call |
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176 found_it = true; |
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177 } |
| 0 | 178 } |
| 179 if (found_it && !vfst.at_end()) { | |
| 180 // found the caller | |
| 181 caller = vfst.method()->method_holder(); | |
| 182 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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183 if (line_number == -1) { |
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184 // show method name if it's a native method |
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185 trace = vfst.method()->name_and_sig_as_C_string(); |
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186 } |
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187 Symbol* s = caller->source_file_name(); |
| 0 | 188 if (s != NULL) { |
| 189 source_file = s->as_C_string(); | |
| 190 } | |
| 191 } | |
| 192 } | |
| 193 if (caller != NULL) { | |
| 194 if (to_class != caller) { | |
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195 const char * from = caller->external_name(); |
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196 const char * to = to_class->external_name(); |
| 0 | 197 // print in a single call to reduce interleaving between threads |
| 198 if (source_file != NULL) { | |
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199 tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace); |
| 0 | 200 } else { |
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201 tty->print("RESOLVE %s %s (%s)\n", from, to, trace); |
| 0 | 202 } |
| 203 } | |
| 204 } | |
| 205 } | |
| 206 | |
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207 void trace_class_resolution(Klass* to_class) { |
| 0 | 208 EXCEPTION_MARK; |
| 209 trace_class_resolution_impl(to_class, THREAD); | |
| 210 if (HAS_PENDING_EXCEPTION) { | |
| 211 CLEAR_PENDING_EXCEPTION; | |
| 212 } | |
| 213 } | |
| 214 | |
| 215 // Wrapper to trace JVM functions | |
| 216 | |
| 217 #ifdef ASSERT | |
| 218 class JVMTraceWrapper : public StackObj { | |
| 219 public: | |
| 220 JVMTraceWrapper(const char* format, ...) { | |
| 221 if (TraceJVMCalls) { | |
| 222 va_list ap; | |
| 223 va_start(ap, format); | |
| 224 tty->print("JVM "); | |
| 225 tty->vprint_cr(format, ap); | |
| 226 va_end(ap); | |
| 227 } | |
| 228 } | |
| 229 }; | |
| 230 | |
| 231 Histogram* JVMHistogram; | |
| 232 volatile jint JVMHistogram_lock = 0; | |
| 233 | |
| 234 class JVMHistogramElement : public HistogramElement { | |
| 235 public: | |
| 236 JVMHistogramElement(const char* name); | |
| 237 }; | |
| 238 | |
| 239 JVMHistogramElement::JVMHistogramElement(const char* elementName) { | |
| 240 _name = elementName; | |
| 241 uintx count = 0; | |
| 242 | |
| 243 while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) { | |
| 244 while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) { | |
| 245 count +=1; | |
| 246 if ( (WarnOnStalledSpinLock > 0) | |
| 247 && (count % WarnOnStalledSpinLock == 0)) { | |
| 248 warning("JVMHistogram_lock seems to be stalled"); | |
| 249 } | |
| 250 } | |
| 251 } | |
| 252 | |
| 253 if(JVMHistogram == NULL) | |
| 254 JVMHistogram = new Histogram("JVM Call Counts",100); | |
| 255 | |
| 256 JVMHistogram->add_element(this); | |
| 257 Atomic::dec(&JVMHistogram_lock); | |
| 258 } | |
| 259 | |
| 260 #define JVMCountWrapper(arg) \ | |
| 261 static JVMHistogramElement* e = new JVMHistogramElement(arg); \ | |
| 262 if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen! | |
| 263 | |
| 264 #define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) | |
| 265 #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) | |
| 266 #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) | |
| 267 #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) | |
| 268 #else | |
| 269 #define JVMWrapper(arg1) | |
| 270 #define JVMWrapper2(arg1, arg2) | |
| 271 #define JVMWrapper3(arg1, arg2, arg3) | |
| 272 #define JVMWrapper4(arg1, arg2, arg3, arg4) | |
| 273 #endif | |
| 274 | |
| 275 | |
| 276 // Interface version ///////////////////////////////////////////////////////////////////// | |
| 277 | |
| 278 | |
| 279 JVM_LEAF(jint, JVM_GetInterfaceVersion()) | |
| 280 return JVM_INTERFACE_VERSION; | |
| 281 JVM_END | |
| 282 | |
| 283 | |
| 284 // java.lang.System ////////////////////////////////////////////////////////////////////// | |
| 285 | |
| 286 | |
| 287 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored)) | |
| 288 JVMWrapper("JVM_CurrentTimeMillis"); | |
| 289 return os::javaTimeMillis(); | |
| 290 JVM_END | |
| 291 | |
| 292 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored)) | |
| 293 JVMWrapper("JVM_NanoTime"); | |
| 294 return os::javaTimeNanos(); | |
| 295 JVM_END | |
| 296 | |
| 297 | |
| 298 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, | |
| 299 jobject dst, jint dst_pos, jint length)) | |
| 300 JVMWrapper("JVM_ArrayCopy"); | |
| 301 // Check if we have null pointers | |
| 302 if (src == NULL || dst == NULL) { | |
| 303 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 304 } | |
| 305 arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); | |
| 306 arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); | |
| 307 assert(s->is_oop(), "JVM_ArrayCopy: src not an oop"); | |
| 308 assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); | |
| 309 // Do copy | |
| 6983 | 310 s->klass()->copy_array(s, src_pos, d, dst_pos, length, thread); |
| 0 | 311 JVM_END |
| 312 | |
| 313 | |
| 314 static void set_property(Handle props, const char* key, const char* value, TRAPS) { | |
| 315 JavaValue r(T_OBJECT); | |
| 316 // public synchronized Object put(Object key, Object value); | |
| 317 HandleMark hm(THREAD); | |
| 318 Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK); | |
| 319 Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK); | |
| 320 JavaCalls::call_virtual(&r, | |
| 321 props, | |
| 1142 | 322 KlassHandle(THREAD, SystemDictionary::Properties_klass()), |
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323 vmSymbols::put_name(), |
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324 vmSymbols::object_object_object_signature(), |
| 0 | 325 key_str, |
| 326 value_str, | |
| 327 THREAD); | |
| 328 } | |
| 329 | |
| 330 | |
| 331 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties)); | |
| 332 | |
| 333 | |
| 334 JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties)) | |
| 335 JVMWrapper("JVM_InitProperties"); | |
| 336 ResourceMark rm; | |
| 337 | |
| 338 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
| 339 | |
| 340 // System property list includes both user set via -D option and | |
| 341 // jvm system specific properties. | |
| 342 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
| 343 PUTPROP(props, p->key(), p->value()); | |
| 344 } | |
| 345 | |
| 346 // Convert the -XX:MaxDirectMemorySize= command line flag | |
| 347 // to the sun.nio.MaxDirectMemorySize property. | |
| 348 // Do this after setting user properties to prevent people | |
| 349 // from setting the value with a -D option, as requested. | |
| 350 { | |
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351 if (FLAG_IS_DEFAULT(MaxDirectMemorySize)) { |
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352 PUTPROP(props, "sun.nio.MaxDirectMemorySize", "-1"); |
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353 } else { |
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354 char as_chars[256]; |
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355 jio_snprintf(as_chars, sizeof(as_chars), UINTX_FORMAT, MaxDirectMemorySize); |
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356 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); |
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357 } |
| 0 | 358 } |
| 359 | |
| 360 // JVM monitoring and management support | |
| 361 // Add the sun.management.compiler property for the compiler's name | |
| 362 { | |
| 363 #undef CSIZE | |
| 364 #if defined(_LP64) || defined(_WIN64) | |
| 365 #define CSIZE "64-Bit " | |
| 366 #else | |
| 367 #define CSIZE | |
| 368 #endif // 64bit | |
| 369 | |
| 370 #ifdef TIERED | |
| 371 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; | |
| 372 #else | |
| 373 #if defined(COMPILER1) | |
| 374 const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; | |
| 375 #elif defined(COMPILER2) | |
| 376 const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; | |
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377 #elif defined(GRAAL) |
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378 const char* compiler_name = "HotSpot " CSIZE "Graal Compiler"; |
| 0 | 379 #else |
| 380 const char* compiler_name = ""; | |
| 381 #endif // compilers | |
| 382 #endif // TIERED | |
| 383 | |
| 384 if (*compiler_name != '\0' && | |
| 385 (Arguments::mode() != Arguments::_int)) { | |
| 386 PUTPROP(props, "sun.management.compiler", compiler_name); | |
| 387 } | |
| 388 } | |
| 389 | |
| 390 return properties; | |
| 391 JVM_END | |
| 392 | |
| 393 | |
| 394 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// | |
| 395 | |
| 396 extern volatile jint vm_created; | |
| 397 | |
| 398 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
| 399 if (vm_created != 0 && (code == 0)) { | |
| 400 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
| 401 Universe::run_finalizers_on_exit(); | |
| 402 } | |
| 403 before_exit(thread); | |
| 404 vm_exit(code); | |
| 405 JVM_END | |
| 406 | |
| 407 | |
| 408 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
| 409 before_exit(thread); | |
| 410 vm_exit(code); | |
| 411 JVM_END | |
| 412 | |
| 413 | |
| 414 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
| 415 register_on_exit_function(func); | |
| 416 JVM_END | |
| 417 | |
| 418 | |
| 419 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
| 420 JVMWrapper("JVM_GC"); | |
| 421 if (!DisableExplicitGC) { | |
| 422 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
| 423 } | |
| 424 JVM_END | |
| 425 | |
| 426 | |
| 427 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
| 428 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
| 429 return Universe::heap()->millis_since_last_gc(); | |
| 430 JVM_END | |
| 431 | |
| 432 | |
| 433 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
| 434 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
| 435 JVM_END | |
| 436 | |
| 437 | |
| 438 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
| 439 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
| 440 JVM_END | |
| 441 | |
| 442 static inline jlong convert_size_t_to_jlong(size_t val) { | |
| 443 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
| 444 NOT_LP64 (return (jlong)val;) | |
| 445 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
| 446 } | |
| 447 | |
| 448 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
| 449 JVMWrapper("JVM_TotalMemory"); | |
| 450 size_t n = Universe::heap()->capacity(); | |
| 451 return convert_size_t_to_jlong(n); | |
| 452 JVM_END | |
| 453 | |
| 454 | |
| 455 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
| 456 JVMWrapper("JVM_FreeMemory"); | |
| 457 CollectedHeap* ch = Universe::heap(); | |
|
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458 size_t n; |
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459 { |
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460 MutexLocker x(Heap_lock); |
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461 n = ch->capacity() - ch->used(); |
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462 } |
| 0 | 463 return convert_size_t_to_jlong(n); |
| 464 JVM_END | |
| 465 | |
| 466 | |
| 467 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
| 468 JVMWrapper("JVM_MaxMemory"); | |
| 469 size_t n = Universe::heap()->max_capacity(); | |
| 470 return convert_size_t_to_jlong(n); | |
| 471 JVM_END | |
| 472 | |
| 473 | |
| 474 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
| 475 JVMWrapper("JVM_ActiveProcessorCount"); | |
| 476 return os::active_processor_count(); | |
| 477 JVM_END | |
| 478 | |
| 479 | |
| 480 | |
| 481 // java.lang.Throwable ////////////////////////////////////////////////////// | |
| 482 | |
| 483 | |
| 484 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
| 485 JVMWrapper("JVM_FillInStackTrace"); | |
| 486 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
| 487 java_lang_Throwable::fill_in_stack_trace(exception); | |
| 488 JVM_END | |
| 489 | |
| 490 | |
| 491 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
| 492 JVMWrapper("JVM_GetStackTraceDepth"); | |
| 493 oop exception = JNIHandles::resolve(throwable); | |
| 494 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
| 495 JVM_END | |
| 496 | |
| 497 | |
| 498 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
| 499 JVMWrapper("JVM_GetStackTraceElement"); | |
| 500 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
| 501 oop exception = JNIHandles::resolve(throwable); | |
| 502 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
| 503 return JNIHandles::make_local(env, element); | |
| 504 JVM_END | |
| 505 | |
| 506 | |
| 507 // java.lang.Object /////////////////////////////////////////////// | |
| 508 | |
| 509 | |
| 510 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
| 511 JVMWrapper("JVM_IHashCode"); | |
| 512 // as implemented in the classic virtual machine; return 0 if object is NULL | |
| 513 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
| 514 JVM_END | |
| 515 | |
| 516 | |
| 517 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
| 518 JVMWrapper("JVM_MonitorWait"); | |
| 519 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 520 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
| 521 if (JvmtiExport::should_post_monitor_wait()) { | |
| 522 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
| 523 } | |
| 524 ObjectSynchronizer::wait(obj, ms, CHECK); | |
| 525 JVM_END | |
| 526 | |
| 527 | |
| 528 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
| 529 JVMWrapper("JVM_MonitorNotify"); | |
| 530 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 531 ObjectSynchronizer::notify(obj, CHECK); | |
| 532 JVM_END | |
| 533 | |
| 534 | |
| 535 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
| 536 JVMWrapper("JVM_MonitorNotifyAll"); | |
| 537 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 538 ObjectSynchronizer::notifyall(obj, CHECK); | |
| 539 JVM_END | |
| 540 | |
| 541 | |
| 542 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
| 543 JVMWrapper("JVM_Clone"); | |
| 544 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 545 const KlassHandle klass (THREAD, obj->klass()); | |
| 546 JvmtiVMObjectAllocEventCollector oam; | |
| 547 | |
| 548 #ifdef ASSERT | |
| 549 // Just checking that the cloneable flag is set correct | |
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550 if (obj->is_array()) { |
| 0 | 551 guarantee(klass->is_cloneable(), "all arrays are cloneable"); |
| 552 } else { | |
| 553 guarantee(obj->is_instance(), "should be instanceOop"); | |
| 1142 | 554 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
| 0 | 555 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
| 556 } | |
| 557 #endif | |
| 558 | |
| 559 // Check if class of obj supports the Cloneable interface. | |
| 560 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
| 561 if (!klass->is_cloneable()) { | |
| 562 ResourceMark rm(THREAD); | |
| 563 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
| 564 } | |
| 565 | |
| 566 // Make shallow object copy | |
| 567 const int size = obj->size(); | |
| 568 oop new_obj = NULL; | |
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569 if (obj->is_array()) { |
| 0 | 570 const int length = ((arrayOop)obj())->length(); |
| 571 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
| 572 } else { | |
| 573 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
| 574 } | |
| 575 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
| 576 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
| 577 // be suspended in the middle of copying the pointer and end up with parts | |
| 578 // of two different pointers in the field. Subsequent dereferences will crash. | |
| 579 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
| 580 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
| 581 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
| 582 // The same is true of StubRoutines::object_copy and the various oop_copy | |
| 583 // variants, and of the code generated by the inline_native_clone intrinsic. | |
| 584 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
| 585 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
| 586 (size_t)align_object_size(size) / HeapWordsPerLong); | |
| 587 // Clear the header | |
| 588 new_obj->init_mark(); | |
| 589 | |
| 590 // Store check (mark entire object and let gc sort it out) | |
| 591 BarrierSet* bs = Universe::heap()->barrier_set(); | |
| 592 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
| 593 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
| 594 | |
| 595 // Caution: this involves a java upcall, so the clone should be | |
| 596 // "gc-robust" by this stage. | |
| 597 if (klass->has_finalizer()) { | |
| 598 assert(obj->is_instance(), "should be instanceOop"); | |
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599 new_obj = InstanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); |
| 0 | 600 } |
| 601 | |
| 602 return JNIHandles::make_local(env, oop(new_obj)); | |
| 603 JVM_END | |
| 604 | |
| 605 // java.lang.Compiler //////////////////////////////////////////////////// | |
| 606 | |
| 607 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
| 608 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
| 609 // functions are all silently ignored unless JVM warnings are printed. | |
| 610 | |
| 611 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
| 612 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
| 613 JVM_END | |
| 614 | |
| 615 | |
| 616 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
| 617 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
| 618 return JNI_FALSE; | |
| 619 JVM_END | |
| 620 | |
| 621 | |
| 622 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
| 623 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
| 624 return JNI_FALSE; | |
| 625 JVM_END | |
| 626 | |
| 627 | |
| 628 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
| 629 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
| 630 return JNI_FALSE; | |
| 631 JVM_END | |
| 632 | |
| 633 | |
| 634 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
| 635 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
| 636 return NULL; | |
| 637 JVM_END | |
| 638 | |
| 639 | |
| 640 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
| 641 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
| 642 JVM_END | |
| 643 | |
| 644 | |
| 645 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
| 646 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
| 647 JVM_END | |
| 648 | |
| 649 | |
| 650 | |
| 651 // Error message support ////////////////////////////////////////////////////// | |
| 652 | |
| 653 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
| 654 JVMWrapper("JVM_GetLastErrorString"); | |
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655 return (jint)os::lasterror(buf, len); |
| 0 | 656 JVM_END |
| 657 | |
| 658 | |
| 659 // java.io.File /////////////////////////////////////////////////////////////// | |
| 660 | |
| 661 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
| 662 JVMWrapper2("JVM_NativePath (%s)", path); | |
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663 return os::native_path(path); |
| 0 | 664 JVM_END |
| 665 | |
| 666 | |
| 667 // Misc. class handling /////////////////////////////////////////////////////////// | |
| 668 | |
| 669 | |
| 670 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
| 671 JVMWrapper("JVM_GetCallerClass"); | |
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672 |
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673 // Pre-JDK 8 and early builds of JDK 8 don't have a CallerSensitive annotation. |
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674 if (!JDK_Version::is_gte_jdk18x_version() || SystemDictionary::reflect_CallerSensitive_klass() == NULL) { |
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675 Klass* k = thread->security_get_caller_class(depth); |
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676 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, k->java_mirror()); |
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677 } else { |
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678 // Basic handshaking with Java_sun_reflect_Reflection_getCallerClass |
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679 assert(depth == -1, "wrong handshake depth"); |
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680 } |
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681 |
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682 // Getting the class of the caller frame. |
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683 // |
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684 // The call stack at this point looks something like this: |
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685 // |
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686 // [0] [ @CallerSensitive public sun.reflect.Reflection.getCallerClass ] |
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687 // [1] [ @CallerSensitive API.method ] |
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688 // [.] [ (skipped intermediate frames) ] |
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689 // [n] [ caller ] |
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690 vframeStream vfst(thread); |
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691 // Cf. LibraryCallKit::inline_native_Reflection_getCallerClass |
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692 for (int n = 0; !vfst.at_end(); vfst.security_next(), n++) { |
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693 Method* m = vfst.method(); |
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694 assert(m != NULL, "sanity"); |
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695 switch (n) { |
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696 case 0: |
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697 // This must only be called from Reflection.getCallerClass |
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698 if (m->intrinsic_id() != vmIntrinsics::_getCallerClass) { |
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699 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetCallerClass must only be called from Reflection.getCallerClass"); |
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700 } |
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701 // fall-through |
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702 case 1: |
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703 // Frame 0 and 1 must be caller sensitive. |
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704 if (!m->caller_sensitive()) { |
|
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|
705 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), err_msg("CallerSensitive annotation expected at frame %d", n)); |
|
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|
706 } |
|
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|
707 break; |
|
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|
708 default: |
|
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|
709 if (!m->is_ignored_by_security_stack_walk()) { |
|
16885e702c88
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changeset
|
710 // We have reached the desired frame; return the holder class. |
|
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|
711 return (jclass) JNIHandles::make_local(env, m->method_holder()->java_mirror()); |
|
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|
712 } |
|
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|
713 break; |
|
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|
714 } |
|
16885e702c88
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|
715 } |
|
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|
716 return NULL; |
| 0 | 717 JVM_END |
| 718 | |
| 719 | |
| 720 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
| 721 JVMWrapper("JVM_FindPrimitiveClass"); | |
| 722 oop mirror = NULL; | |
| 723 BasicType t = name2type(utf); | |
| 724 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
| 725 mirror = Universe::java_mirror(t); | |
| 726 } | |
| 727 if (mirror == NULL) { | |
| 728 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
| 729 } else { | |
| 730 return (jclass) JNIHandles::make_local(env, mirror); | |
| 731 } | |
| 732 JVM_END | |
| 733 | |
| 734 | |
| 735 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
| 736 JVMWrapper("JVM_ResolveClass"); | |
| 737 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
| 738 JVM_END | |
| 739 | |
|
878
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|
740 |
|
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|
741 // Returns a class loaded by the bootstrap class loader; or null |
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742 // if not found. ClassNotFoundException is not thrown. |
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|
743 // |
|
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|
744 // Rationale behind JVM_FindClassFromBootLoader |
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|
745 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
|
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746 // b> because of (a) java.dll has a direct dependecy on the unexported |
|
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747 // private symbol "_JVM_FindClassFromClassLoader@20". |
|
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748 // c> the launcher cannot use the private symbol as it dynamically opens |
|
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749 // the entry point, so if something changes, the launcher will fail |
|
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|
750 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
|
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|
751 // stable exported interface. |
|
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|
752 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
|
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|
753 // signature to change from _JVM_FindClassFromClassLoader@20 to |
|
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|
754 // JVM_FindClassFromClassLoader and will not be backward compatible |
|
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|
755 // with older JDKs. |
|
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|
756 // Thus a public/stable exported entry point is the right solution, |
|
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|
757 // public here means public in linker semantics, and is exported only |
|
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|
758 // to the JDK, and is not intended to be a public API. |
|
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diff
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|
759 |
|
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|
760 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
|
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|
761 const char* name)) |
|
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|
762 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
|
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changeset
|
763 |
|
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|
764 // Java libraries should ensure that name is never null... |
|
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|
765 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
|
878
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diff
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|
766 // It's impossible to create this class; the name cannot fit |
|
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|
767 // into the constant pool. |
|
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|
768 return NULL; |
|
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diff
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|
769 } |
|
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changeset
|
770 |
|
2177
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changeset
|
771 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
|
6725
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changeset
|
772 Klass* k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
|
878
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diff
changeset
|
773 if (k == NULL) { |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
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diff
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|
774 return NULL; |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
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diff
changeset
|
775 } |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
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diff
changeset
|
776 |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
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changeset
|
777 if (TraceClassResolution) { |
|
abe076e3636f
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diff
changeset
|
778 trace_class_resolution(k); |
|
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diff
changeset
|
779 } |
| 6983 | 780 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
|
878
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
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diff
changeset
|
781 JVM_END |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
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diff
changeset
|
782 |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
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875
diff
changeset
|
783 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
784 jboolean init, jobject loader, |
|
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mchung
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diff
changeset
|
785 jboolean throwError)) |
|
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mchung
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diff
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|
786 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
|
abe076e3636f
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|
787 throwError ? "error" : "exception"); |
| 388 | 788 // Java libraries should ensure that name is never null... |
|
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|
789 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
| 388 | 790 // It's impossible to create this class; the name cannot fit |
| 791 // into the constant pool. | |
| 792 if (throwError) { | |
| 793 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 794 } else { | |
| 795 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
| 796 } | |
| 797 } | |
|
2177
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diff
changeset
|
798 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
| 388 | 799 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
| 800 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 801 Handle(), throwError, THREAD); | |
| 802 | |
| 803 if (TraceClassResolution && result != NULL) { | |
|
6725
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|
804 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
| 388 | 805 } |
| 806 return result; | |
| 0 | 807 JVM_END |
| 808 | |
| 809 | |
| 810 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
| 811 jboolean init, jclass from)) | |
| 812 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
|
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|
813 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
| 0 | 814 // It's impossible to create this class; the name cannot fit |
| 815 // into the constant pool. | |
| 816 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 817 } | |
|
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diff
changeset
|
818 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
| 0 | 819 oop from_class_oop = JNIHandles::resolve(from); |
|
6725
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6964458: Reimplement class meta-data storage to use native memory
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changeset
|
820 Klass* from_class = (from_class_oop == NULL) |
|
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|
821 ? (Klass*)NULL |
|
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|
822 : java_lang_Class::as_Klass(from_class_oop); |
| 0 | 823 oop class_loader = NULL; |
| 824 oop protection_domain = NULL; | |
| 825 if (from_class != NULL) { | |
| 6983 | 826 class_loader = from_class->class_loader(); |
| 827 protection_domain = from_class->protection_domain(); | |
| 0 | 828 } |
| 829 Handle h_loader(THREAD, class_loader); | |
| 830 Handle h_prot (THREAD, protection_domain); | |
| 831 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 832 h_prot, true, thread); | |
| 833 | |
| 834 if (TraceClassResolution && result != NULL) { | |
| 835 // this function is generally only used for class loading during verification. | |
| 836 ResourceMark rm; | |
| 837 oop from_mirror = JNIHandles::resolve_non_null(from); | |
|
6725
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|
838 Klass* from_class = java_lang_Class::as_Klass(from_mirror); |
| 6983 | 839 const char * from_name = from_class->external_name(); |
| 0 | 840 |
| 841 oop mirror = JNIHandles::resolve_non_null(result); | |
|
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|
842 Klass* to_class = java_lang_Class::as_Klass(mirror); |
| 6983 | 843 const char * to = to_class->external_name(); |
| 0 | 844 tty->print("RESOLVE %s %s (verification)\n", from_name, to); |
| 845 } | |
| 846 | |
| 847 return result; | |
| 848 JVM_END | |
| 849 | |
| 850 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
| 851 if (loader.is_null()) { | |
| 852 return; | |
| 853 } | |
| 854 | |
| 855 // check whether the current caller thread holds the lock or not. | |
| 856 // If not, increment the corresponding counter | |
| 857 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
| 858 ObjectSynchronizer::owner_self) { | |
| 859 counter->inc(); | |
| 860 } | |
| 861 } | |
| 862 | |
| 863 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
|
973
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
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parents:
878
diff
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|
864 // and JVM_DefineClassWithSourceCond() |
|
ad6585fd4087
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|
865 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
|
ad6585fd4087
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878
diff
changeset
|
866 jobject loader, const jbyte *buf, |
|
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878
diff
changeset
|
867 jsize len, jobject pd, const char *source, |
|
ad6585fd4087
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diff
changeset
|
868 jboolean verify, TRAPS) { |
|
431
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6653858: dynamic languages need to be able to load anonymous classes
jrose
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388
diff
changeset
|
869 if (source == NULL) source = "__JVM_DefineClass__"; |
| 0 | 870 |
|
875
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|
871 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
|
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diff
changeset
|
872 JavaThread* jt = (JavaThread*) THREAD; |
|
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726
diff
changeset
|
873 |
|
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parents:
726
diff
changeset
|
874 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
|
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mchung
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726
diff
changeset
|
875 ClassLoader::perf_define_appclass_selftime(), |
|
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
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726
diff
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|
876 ClassLoader::perf_define_appclasses(), |
|
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changeset
|
877 jt->get_thread_stat()->perf_recursion_counts_addr(), |
|
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726
diff
changeset
|
878 jt->get_thread_stat()->perf_timers_addr(), |
|
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mchung
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726
diff
changeset
|
879 PerfClassTraceTime::DEFINE_CLASS); |
|
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mchung
parents:
726
diff
changeset
|
880 |
|
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mchung
parents:
726
diff
changeset
|
881 if (UsePerfData) { |
|
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mchung
parents:
726
diff
changeset
|
882 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
|
6a93908f268f
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726
diff
changeset
|
883 } |
|
6a93908f268f
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726
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changeset
|
884 |
| 0 | 885 // Since exceptions can be thrown, class initialization can take place |
| 886 // if name is NULL no check for class name in .class stream has to be made. | |
|
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|
887 TempNewSymbol class_name = NULL; |
| 0 | 888 if (name != NULL) { |
| 889 const int str_len = (int)strlen(name); | |
|
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|
890 if (str_len > Symbol::max_length()) { |
| 0 | 891 // It's impossible to create this class; the name cannot fit |
| 892 // into the constant pool. | |
| 893 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 894 } | |
|
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|
895 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
| 0 | 896 } |
| 897 | |
| 898 ResourceMark rm(THREAD); | |
| 899 ClassFileStream st((u1*) buf, len, (char *)source); | |
| 900 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
| 901 if (UsePerfData) { | |
| 902 is_lock_held_by_thread(class_loader, | |
| 903 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
| 904 THREAD); | |
| 905 } | |
| 906 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
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907 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, |
| 0 | 908 protection_domain, &st, |
|
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909 verify != 0, |
| 0 | 910 CHECK_NULL); |
| 911 | |
| 912 if (TraceClassResolution && k != NULL) { | |
| 913 trace_class_resolution(k); | |
| 914 } | |
| 915 | |
| 6983 | 916 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
| 0 | 917 } |
| 918 | |
| 919 | |
| 920 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
| 921 JVMWrapper2("JVM_DefineClass %s", name); | |
| 922 | |
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923 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
| 0 | 924 JVM_END |
| 925 | |
| 926 | |
| 927 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
| 928 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
| 929 | |
|
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930 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
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931 JVM_END |
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932 |
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933 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
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934 jobject loader, const jbyte *buf, |
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935 jsize len, jobject pd, |
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936 const char *source, jboolean verify)) |
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937 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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938 |
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939 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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940 JVM_END |
| 0 | 941 |
| 942 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
| 943 JVMWrapper("JVM_FindLoadedClass"); | |
| 944 ResourceMark rm(THREAD); | |
| 945 | |
| 946 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 947 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
| 948 | |
| 949 const char* str = java_lang_String::as_utf8_string(string()); | |
| 950 // Sanity check, don't expect null | |
| 951 if (str == NULL) return NULL; | |
| 952 | |
| 953 const int str_len = (int)strlen(str); | |
|
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954 if (str_len > Symbol::max_length()) { |
| 0 | 955 // It's impossible to create this class; the name cannot fit |
| 956 // into the constant pool. | |
| 957 return NULL; | |
| 958 } | |
|
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959 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
| 0 | 960 |
| 961 // Security Note: | |
| 962 // The Java level wrapper will perform the necessary security check allowing | |
| 963 // us to pass the NULL as the initiating class loader. | |
| 964 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
| 965 if (UsePerfData) { | |
| 966 is_lock_held_by_thread(h_loader, | |
| 967 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
| 968 THREAD); | |
| 969 } | |
| 970 | |
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971 Klass* k = SystemDictionary::find_instance_or_array_klass(klass_name, |
| 0 | 972 h_loader, |
| 973 Handle(), | |
| 974 CHECK_NULL); | |
| 975 | |
| 976 return (k == NULL) ? NULL : | |
| 6983 | 977 (jclass) JNIHandles::make_local(env, k->java_mirror()); |
| 0 | 978 JVM_END |
| 979 | |
| 980 | |
| 981 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
| 982 | |
| 983 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
| 984 assert (cls != NULL, "illegal class"); | |
| 985 JVMWrapper("JVM_GetClassName"); | |
| 986 JvmtiVMObjectAllocEventCollector oam; | |
| 987 ResourceMark rm(THREAD); | |
| 988 const char* name; | |
| 989 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 990 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
| 991 } else { | |
| 992 // Consider caching interned string in Klass | |
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993 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 0 | 994 assert(k->is_klass(), "just checking"); |
| 6983 | 995 name = k->external_name(); |
| 0 | 996 } |
| 997 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
| 998 return (jstring) JNIHandles::make_local(env, result); | |
| 999 JVM_END | |
| 1000 | |
| 1001 | |
| 1002 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
| 1003 JVMWrapper("JVM_GetClassInterfaces"); | |
| 1004 JvmtiVMObjectAllocEventCollector oam; | |
| 1005 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1006 | |
| 1007 // Special handling for primitive objects | |
| 1008 if (java_lang_Class::is_primitive(mirror)) { | |
| 1009 // Primitive objects does not have any interfaces | |
| 1142 | 1010 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1011 return (jobjectArray) JNIHandles::make_local(env, r); |
| 1012 } | |
| 1013 | |
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1014 KlassHandle klass(thread, java_lang_Class::as_Klass(mirror)); |
| 0 | 1015 // Figure size of result array |
| 1016 int size; | |
| 1017 if (klass->oop_is_instance()) { | |
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1018 size = InstanceKlass::cast(klass())->local_interfaces()->length(); |
| 0 | 1019 } else { |
| 1020 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
| 1021 size = 2; | |
| 1022 } | |
| 1023 | |
| 1024 // Allocate result array | |
| 1142 | 1025 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
| 0 | 1026 objArrayHandle result (THREAD, r); |
| 1027 // Fill in result | |
| 1028 if (klass->oop_is_instance()) { | |
| 1029 // Regular instance klass, fill in all local interfaces | |
| 1030 for (int index = 0; index < size; index++) { | |
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1031 Klass* k = InstanceKlass::cast(klass())->local_interfaces()->at(index); |
| 6983 | 1032 result->obj_at_put(index, k->java_mirror()); |
| 0 | 1033 } |
| 1034 } else { | |
| 1035 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
| 6983 | 1036 result->obj_at_put(0, SystemDictionary::Cloneable_klass()->java_mirror()); |
| 1037 result->obj_at_put(1, SystemDictionary::Serializable_klass()->java_mirror()); | |
| 0 | 1038 } |
| 1039 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1040 JVM_END | |
| 1041 | |
| 1042 | |
| 1043 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
| 1044 JVMWrapper("JVM_GetClassLoader"); | |
| 1045 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1046 return NULL; | |
| 1047 } | |
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1048 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1049 oop loader = k->class_loader(); |
| 0 | 1050 return JNIHandles::make_local(env, loader); |
| 1051 JVM_END | |
| 1052 | |
| 1053 | |
| 1054 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
| 1055 JVMWrapper("JVM_IsInterface"); | |
| 1056 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1057 if (java_lang_Class::is_primitive(mirror)) { | |
| 1058 return JNI_FALSE; | |
| 1059 } | |
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1060 Klass* k = java_lang_Class::as_Klass(mirror); |
| 6983 | 1061 jboolean result = k->is_interface(); |
| 1062 assert(!result || k->oop_is_instance(), | |
| 0 | 1063 "all interfaces are instance types"); |
| 1064 // The compiler intrinsic for isInterface tests the | |
| 1065 // Klass::_access_flags bits in the same way. | |
| 1066 return result; | |
| 1067 JVM_END | |
| 1068 | |
| 1069 | |
| 1070 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
| 1071 JVMWrapper("JVM_GetClassSigners"); | |
| 1072 JvmtiVMObjectAllocEventCollector oam; | |
| 1073 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1074 // There are no signers for primitive types | |
| 1075 return NULL; | |
| 1076 } | |
| 1077 | |
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1078 objArrayOop signers = java_lang_Class::signers(JNIHandles::resolve_non_null(cls)); |
| 0 | 1079 |
| 1080 // If there are no signers set in the class, or if the class | |
| 1081 // is an array, return NULL. | |
| 1082 if (signers == NULL) return NULL; | |
| 1083 | |
| 1084 // copy of the signers array | |
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1085 Klass* element = ObjArrayKlass::cast(signers->klass())->element_klass(); |
| 0 | 1086 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); |
| 1087 for (int index = 0; index < signers->length(); index++) { | |
| 1088 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
| 1089 } | |
| 1090 | |
| 1091 // return the copy | |
| 1092 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
| 1093 JVM_END | |
| 1094 | |
| 1095 | |
| 1096 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
| 1097 JVMWrapper("JVM_SetClassSigners"); | |
| 1098 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1099 // This call is ignored for primitive types and arrays. | |
| 1100 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
| 1101 // be called with an array. Only the bootstrap loader creates arrays. | |
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1102 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1103 if (k->oop_is_instance()) { |
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1104 java_lang_Class::set_signers(k->java_mirror(), objArrayOop(JNIHandles::resolve(signers))); |
| 0 | 1105 } |
| 1106 } | |
| 1107 JVM_END | |
| 1108 | |
| 1109 | |
| 1110 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
| 1111 JVMWrapper("JVM_GetProtectionDomain"); | |
| 1112 if (JNIHandles::resolve(cls) == NULL) { | |
| 1113 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
| 1114 } | |
| 1115 | |
| 1116 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1117 // Primitive types does not have a protection domain. | |
| 1118 return NULL; | |
| 1119 } | |
| 1120 | |
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1121 oop pd = java_lang_Class::protection_domain(JNIHandles::resolve(cls)); |
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1122 return (jobject) JNIHandles::make_local(env, pd); |
| 0 | 1123 JVM_END |
| 1124 | |
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1125 // Preserved in Graal repo so that linking against a JDK7 libjava.so works |
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1126 JVM_ENTRY(void, JVM_SetProtectionDomain(JNIEnv *env, jclass cls, jobject protection_domain)) |
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1127 JVMWrapper("JVM_SetProtectionDomain"); |
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1128 |
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1129 ResourceMark rm(THREAD); |
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1130 const char* msg = "Obsolete JVM_SetProtectionDomain function called"; |
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1131 size_t buflen = strlen(msg); |
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1132 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
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1133 jio_snprintf(buf, buflen, msg); |
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1134 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
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1135 JVM_END |
| 0 | 1136 |
| 11010 | 1137 static bool is_authorized(Handle context, instanceKlassHandle klass, TRAPS) { |
| 1138 // If there is a security manager and protection domain, check the access | |
| 1139 // in the protection domain, otherwise it is authorized. | |
| 1140 if (java_lang_System::has_security_manager()) { | |
| 1141 | |
| 1142 // For bootstrapping, if pd implies method isn't in the JDK, allow | |
| 1143 // this context to revert to older behavior. | |
| 1144 // In this case the isAuthorized field in AccessControlContext is also not | |
| 1145 // present. | |
| 1146 if (Universe::protection_domain_implies_method() == NULL) { | |
| 1147 return true; | |
| 1148 } | |
| 1149 | |
| 1150 // Whitelist certain access control contexts | |
| 1151 if (java_security_AccessControlContext::is_authorized(context)) { | |
| 1152 return true; | |
| 1153 } | |
| 1154 | |
| 1155 oop prot = klass->protection_domain(); | |
| 1156 if (prot != NULL) { | |
| 1157 // Call pd.implies(new SecurityPermission("createAccessControlContext")) | |
| 1158 // in the new wrapper. | |
| 1159 methodHandle m(THREAD, Universe::protection_domain_implies_method()); | |
| 1160 Handle h_prot(THREAD, prot); | |
| 1161 JavaValue result(T_BOOLEAN); | |
| 1162 JavaCallArguments args(h_prot); | |
| 1163 JavaCalls::call(&result, m, &args, CHECK_false); | |
| 1164 return (result.get_jboolean() != 0); | |
| 1165 } | |
| 1166 } | |
| 1167 return true; | |
| 1168 } | |
| 1169 | |
| 1170 // Create an AccessControlContext with a protection domain with null codesource | |
| 1171 // and null permissions - which gives no permissions. | |
| 1172 oop create_dummy_access_control_context(TRAPS) { | |
| 1173 InstanceKlass* pd_klass = InstanceKlass::cast(SystemDictionary::ProtectionDomain_klass()); | |
| 1174 // new ProtectionDomain(null,null); | |
| 1175 oop null_protection_domain = pd_klass->allocate_instance(CHECK_NULL); | |
| 1176 Handle null_pd(THREAD, null_protection_domain); | |
| 1177 | |
| 1178 // new ProtectionDomain[] {pd}; | |
| 1179 objArrayOop context = oopFactory::new_objArray(pd_klass, 1, CHECK_NULL); | |
| 1180 context->obj_at_put(0, null_pd()); | |
| 1181 | |
| 1182 // new AccessControlContext(new ProtectionDomain[] {pd}) | |
| 1183 objArrayHandle h_context(THREAD, context); | |
| 1184 oop result = java_security_AccessControlContext::create(h_context, false, Handle(), CHECK_NULL); | |
| 1185 return result; | |
| 1186 } | |
| 0 | 1187 |
| 1188 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
| 1189 JVMWrapper("JVM_DoPrivileged"); | |
| 1190 | |
| 1191 if (action == NULL) { | |
| 1192 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
| 1193 } | |
| 1194 | |
| 11010 | 1195 // Compute the frame initiating the do privileged operation and setup the privileged stack |
| 1196 vframeStream vfst(thread); | |
| 1197 vfst.security_get_caller_frame(1); | |
| 1198 | |
| 1199 if (vfst.at_end()) { | |
| 1200 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "no caller?"); | |
| 1201 } | |
| 1202 | |
| 1203 Method* method = vfst.method(); | |
| 1204 instanceKlassHandle klass (THREAD, method->method_holder()); | |
| 1205 | |
| 1206 // Check that action object understands "Object run()" | |
| 1207 Handle h_context; | |
| 1208 if (context != NULL) { | |
| 1209 h_context = Handle(THREAD, JNIHandles::resolve(context)); | |
| 1210 bool authorized = is_authorized(h_context, klass, CHECK_NULL); | |
| 1211 if (!authorized) { | |
| 1212 // Create an unprivileged access control object and call it's run function | |
| 1213 // instead. | |
| 1214 oop noprivs = create_dummy_access_control_context(CHECK_NULL); | |
| 1215 h_context = Handle(THREAD, noprivs); | |
| 1216 } | |
| 1217 } | |
| 0 | 1218 |
| 1219 // Check that action object understands "Object run()" | |
| 1220 Handle object (THREAD, JNIHandles::resolve(action)); | |
| 1221 | |
| 1222 // get run() method | |
| 6983 | 1223 Method* m_oop = object->klass()->uncached_lookup_method( |
| 0 | 1224 vmSymbols::run_method_name(), |
| 1225 vmSymbols::void_object_signature()); | |
| 1226 methodHandle m (THREAD, m_oop); | |
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1227 if (m.is_null() || !m->is_method() || !m()->is_public() || m()->is_static()) { |
| 0 | 1228 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); |
| 1229 } | |
| 1230 | |
| 11010 | 1231 // Stack allocated list of privileged stack elements |
| 1232 PrivilegedElement pi; | |
| 0 | 1233 if (!vfst.at_end()) { |
| 11010 | 1234 pi.initialize(&vfst, h_context(), thread->privileged_stack_top(), CHECK_NULL); |
| 0 | 1235 thread->set_privileged_stack_top(&pi); |
| 1236 } | |
| 1237 | |
| 1238 | |
| 1239 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
| 1240 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
| 1241 Handle pending_exception; | |
| 1242 JavaValue result(T_OBJECT); | |
| 1243 JavaCallArguments args(object); | |
| 1244 JavaCalls::call(&result, m, &args, THREAD); | |
| 1245 | |
| 1246 // done with action, remove ourselves from the list | |
| 1247 if (!vfst.at_end()) { | |
| 1248 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
| 1249 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
| 1250 } | |
| 1251 | |
| 1252 if (HAS_PENDING_EXCEPTION) { | |
| 1253 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
| 1254 CLEAR_PENDING_EXCEPTION; | |
| 1255 | |
| 1142 | 1256 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
| 1257 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
| 0 | 1258 // Throw a java.security.PrivilegedActionException(Exception e) exception |
| 1259 JavaCallArguments args(pending_exception); | |
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1260 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1261 vmSymbols::exception_void_signature(), |
| 0 | 1262 &args); |
| 1263 } | |
| 1264 } | |
| 1265 | |
| 1266 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
| 1267 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
| 1268 JVM_END | |
| 1269 | |
| 1270 | |
| 1271 // Returns the inherited_access_control_context field of the running thread. | |
| 1272 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1273 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
| 1274 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
| 1275 return JNIHandles::make_local(env, result); | |
| 1276 JVM_END | |
| 1277 | |
| 1278 class RegisterArrayForGC { | |
| 1279 private: | |
| 1280 JavaThread *_thread; | |
| 1281 public: | |
| 1282 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
| 1283 _thread = thread; | |
| 1284 _thread->register_array_for_gc(array); | |
| 1285 } | |
| 1286 | |
| 1287 ~RegisterArrayForGC() { | |
| 1288 _thread->register_array_for_gc(NULL); | |
| 1289 } | |
| 1290 }; | |
| 1291 | |
| 1292 | |
| 1293 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1294 JVMWrapper("JVM_GetStackAccessControlContext"); | |
| 1295 if (!UsePrivilegedStack) return NULL; | |
| 1296 | |
| 1297 ResourceMark rm(THREAD); | |
| 1298 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
| 1299 JvmtiVMObjectAllocEventCollector oam; | |
| 1300 | |
| 1301 // count the protection domains on the execution stack. We collapse | |
| 1302 // duplicate consecutive protection domains into a single one, as | |
| 1303 // well as stopping when we hit a privileged frame. | |
| 1304 | |
| 1305 // Use vframeStream to iterate through Java frames | |
| 1306 vframeStream vfst(thread); | |
| 1307 | |
| 1308 oop previous_protection_domain = NULL; | |
| 1309 Handle privileged_context(thread, NULL); | |
| 1310 bool is_privileged = false; | |
| 1311 oop protection_domain = NULL; | |
| 1312 | |
| 1313 for(; !vfst.at_end(); vfst.next()) { | |
| 1314 // get method of frame | |
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1315 Method* method = vfst.method(); |
| 0 | 1316 intptr_t* frame_id = vfst.frame_id(); |
| 1317 | |
| 1318 // check the privileged frames to see if we have a match | |
| 1319 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
| 1320 // this frame is privileged | |
| 1321 is_privileged = true; | |
| 1322 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
| 1323 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
| 1324 } else { | |
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1325 protection_domain = method->method_holder()->protection_domain(); |
| 0 | 1326 } |
| 1327 | |
| 1328 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
| 1329 local_array->push(protection_domain); | |
| 1330 previous_protection_domain = protection_domain; | |
| 1331 } | |
| 1332 | |
| 1333 if (is_privileged) break; | |
| 1334 } | |
| 1335 | |
| 1336 | |
| 1337 // either all the domains on the stack were system domains, or | |
| 1338 // we had a privileged system domain | |
| 1339 if (local_array->is_empty()) { | |
| 1340 if (is_privileged && privileged_context.is_null()) return NULL; | |
| 1341 | |
| 1342 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
| 1343 return JNIHandles::make_local(env, result); | |
| 1344 } | |
| 1345 | |
| 1346 // the resource area must be registered in case of a gc | |
| 1347 RegisterArrayForGC ragc(thread, local_array); | |
| 1142 | 1348 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
| 0 | 1349 local_array->length(), CHECK_NULL); |
| 1350 objArrayHandle h_context(thread, context); | |
| 1351 for (int index = 0; index < local_array->length(); index++) { | |
| 1352 h_context->obj_at_put(index, local_array->at(index)); | |
| 1353 } | |
| 1354 | |
| 1355 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
| 1356 | |
| 1357 return JNIHandles::make_local(env, result); | |
| 1358 JVM_END | |
| 1359 | |
| 1360 | |
| 1361 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
| 1362 JVMWrapper("JVM_IsArrayClass"); | |
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1363 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1364 return (k != NULL) && k->oop_is_array() ? true : false; |
| 0 | 1365 JVM_END |
| 1366 | |
| 1367 | |
| 1368 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
| 1369 JVMWrapper("JVM_IsPrimitiveClass"); | |
| 1370 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1371 return (jboolean) java_lang_Class::is_primitive(mirror); | |
| 1372 JVM_END | |
| 1373 | |
| 1374 | |
| 1375 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
| 1376 JVMWrapper("JVM_GetComponentType"); | |
| 1377 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1378 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
| 1379 return (jclass) JNIHandles::make_local(env, result); | |
| 1380 JVM_END | |
| 1381 | |
| 1382 | |
| 1383 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
| 1384 JVMWrapper("JVM_GetClassModifiers"); | |
| 1385 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1386 // Primitive type | |
| 1387 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 1388 } | |
| 1389 | |
| 6983 | 1390 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 1391 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); |
| 1392 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
| 1393 return k->modifier_flags(); | |
| 1394 JVM_END | |
| 1395 | |
| 1396 | |
| 1397 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
| 1398 | |
| 1399 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
| 1400 JvmtiVMObjectAllocEventCollector oam; | |
| 1401 // ofClass is a reference to a java_lang_Class object. The mirror object | |
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1402 // of an InstanceKlass |
| 0 | 1403 |
| 1404 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1405 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
| 1142 | 1406 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1407 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1408 } | |
| 1409 | |
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1410 instanceKlassHandle k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
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1411 InnerClassesIterator iter(k); |
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1412 |
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1413 if (iter.length() == 0) { |
| 0 | 1414 // Neither an inner nor outer class |
| 1142 | 1415 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1416 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1417 } | |
| 1418 | |
| 1419 // find inner class info | |
| 1420 constantPoolHandle cp(thread, k->constants()); | |
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1421 int length = iter.length(); |
| 0 | 1422 |
| 1423 // Allocate temp. result array | |
| 1142 | 1424 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
| 0 | 1425 objArrayHandle result (THREAD, r); |
| 1426 int members = 0; | |
| 1427 | |
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1428 for (; !iter.done(); iter.next()) { |
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1429 int ioff = iter.inner_class_info_index(); |
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1430 int ooff = iter.outer_class_info_index(); |
| 0 | 1431 |
| 1432 if (ioff != 0 && ooff != 0) { | |
| 1433 // Check to see if the name matches the class we're looking for | |
| 1434 // before attempting to find the class. | |
| 1435 if (cp->klass_name_at_matches(k, ooff)) { | |
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1436 Klass* outer_klass = cp->klass_at(ooff, CHECK_NULL); |
| 0 | 1437 if (outer_klass == k()) { |
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1438 Klass* ik = cp->klass_at(ioff, CHECK_NULL); |
| 0 | 1439 instanceKlassHandle inner_klass (THREAD, ik); |
| 1440 | |
| 1441 // Throws an exception if outer klass has not declared k as | |
| 1442 // an inner klass | |
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1443 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
| 0 | 1444 |
| 1445 result->obj_at_put(members, inner_klass->java_mirror()); | |
| 1446 members++; | |
| 1447 } | |
| 1448 } | |
| 1449 } | |
| 1450 } | |
| 1451 | |
| 1452 if (members != length) { | |
| 1453 // Return array of right length | |
| 1142 | 1454 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
| 0 | 1455 for(int i = 0; i < members; i++) { |
| 1456 res->obj_at_put(i, result->obj_at(i)); | |
| 1457 } | |
| 1458 return (jobjectArray)JNIHandles::make_local(env, res); | |
| 1459 } | |
| 1460 | |
| 1461 return (jobjectArray)JNIHandles::make_local(env, result()); | |
| 1462 JVM_END | |
| 1463 | |
| 1464 | |
| 1465 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
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1466 { |
| 0 | 1467 // ofClass is a reference to a java_lang_Class object. |
| 1468 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1469 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
| 0 | 1470 return NULL; |
| 1471 } | |
| 1472 | |
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1473 bool inner_is_member = false; |
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1474 Klass* outer_klass |
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1475 = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)) |
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1476 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
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1477 if (outer_klass == NULL) return NULL; // already a top-level class |
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1478 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
| 6983 | 1479 return (jclass) JNIHandles::make_local(env, outer_klass->java_mirror()); |
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1480 } |
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1481 JVM_END |
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1482 |
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1483 // should be in InstanceKlass.cpp, but is here for historical reasons |
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1484 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
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1485 bool* inner_is_member, |
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1486 TRAPS) { |
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1487 Thread* thread = THREAD; |
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1488 InnerClassesIterator iter(k); |
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1489 if (iter.length() == 0) { |
| 0 | 1490 // No inner class info => no declaring class |
| 1491 return NULL; | |
| 1492 } | |
| 1493 | |
| 1494 constantPoolHandle i_cp(thread, k->constants()); | |
| 1495 | |
| 1496 bool found = false; | |
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1497 Klass* ok; |
| 0 | 1498 instanceKlassHandle outer_klass; |
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1499 *inner_is_member = false; |
| 0 | 1500 |
| 1501 // Find inner_klass attribute | |
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1502 for (; !iter.done() && !found; iter.next()) { |
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1503 int ioff = iter.inner_class_info_index(); |
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1504 int ooff = iter.outer_class_info_index(); |
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1505 int noff = iter.inner_name_index(); |
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1506 if (ioff != 0) { |
| 0 | 1507 // Check to see if the name matches the class we're looking for |
| 1508 // before attempting to find the class. | |
| 1509 if (i_cp->klass_name_at_matches(k, ioff)) { | |
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1510 Klass* inner_klass = i_cp->klass_at(ioff, CHECK_NULL); |
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1511 found = (k() == inner_klass); |
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1512 if (found && ooff != 0) { |
| 0 | 1513 ok = i_cp->klass_at(ooff, CHECK_NULL); |
| 1514 outer_klass = instanceKlassHandle(thread, ok); | |
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1515 *inner_is_member = true; |
| 0 | 1516 } |
| 1517 } | |
| 1518 } | |
| 1519 } | |
| 1520 | |
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1521 if (found && outer_klass.is_null()) { |
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1522 // It may be anonymous; try for that. |
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|
1523 int encl_method_class_idx = k->enclosing_method_class_index(); |
|
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|
1524 if (encl_method_class_idx != 0) { |
|
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|
1525 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
|
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|
1526 outer_klass = instanceKlassHandle(thread, ok); |
|
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|
1527 *inner_is_member = false; |
|
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|
1528 } |
|
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|
1529 } |
|
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|
1530 |
| 0 | 1531 // If no inner class attribute found for this class. |
|
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|
1532 if (outer_klass.is_null()) return NULL; |
| 0 | 1533 |
| 1534 // Throws an exception if outer klass has not declared k as an inner klass | |
|
665
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|
1535 // We need evidence that each klass knows about the other, or else |
|
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|
1536 // the system could allow a spoof of an inner class to gain access rights. |
|
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|
1537 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
|
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|
1538 return outer_klass(); |
|
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|
1539 } |
| 0 | 1540 |
| 1541 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
| 1542 assert (cls != NULL, "illegal class"); | |
| 1543 JVMWrapper("JVM_GetClassSignature"); | |
| 1544 JvmtiVMObjectAllocEventCollector oam; | |
| 1545 ResourceMark rm(THREAD); | |
| 1546 // Return null for arrays and primatives | |
| 1547 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
|
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|
1548 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 6983 | 1549 if (k->oop_is_instance()) { |
|
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|
1550 Symbol* sym = InstanceKlass::cast(k)->generic_signature(); |
|
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|
1551 if (sym == NULL) return NULL; |
| 0 | 1552 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 1553 return (jstring) JNIHandles::make_local(env, str()); | |
| 1554 } | |
| 1555 } | |
| 1556 return NULL; | |
| 1557 JVM_END | |
| 1558 | |
| 1559 | |
| 1560 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
| 1561 assert (cls != NULL, "illegal class"); | |
| 1562 JVMWrapper("JVM_GetClassAnnotations"); | |
|
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|
1563 |
| 0 | 1564 // Return null for arrays and primitives |
| 1565 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
|
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|
1566 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 6983 | 1567 if (k->oop_is_instance()) { |
|
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|
1568 typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->class_annotations(), CHECK_NULL); |
|
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|
1569 return (jbyteArray) JNIHandles::make_local(env, a); |
| 0 | 1570 } |
| 1571 } | |
| 1572 return NULL; | |
| 1573 JVM_END | |
| 1574 | |
| 1575 | |
|
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|
1576 static bool jvm_get_field_common(jobject field, fieldDescriptor& fd, TRAPS) { |
| 0 | 1577 // some of this code was adapted from from jni_FromReflectedField |
| 1578 | |
| 1579 oop reflected = JNIHandles::resolve_non_null(field); | |
| 1580 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
|
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|
1581 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 1582 int slot = java_lang_reflect_Field::slot(reflected); |
| 1583 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
| 1584 | |
| 1585 KlassHandle kh(THREAD, k); | |
|
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|
1586 intptr_t offset = InstanceKlass::cast(kh())->field_offset(slot); |
| 0 | 1587 |
| 1588 if (modifiers & JVM_ACC_STATIC) { | |
| 1589 // for static fields we only look in the current class | |
|
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|
1590 if (!InstanceKlass::cast(kh())->find_local_field_from_offset(offset, true, &fd)) { |
| 0 | 1591 assert(false, "cannot find static field"); |
|
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|
1592 return false; |
| 0 | 1593 } |
| 1594 } else { | |
| 1595 // for instance fields we start with the current class and work | |
| 1596 // our way up through the superclass chain | |
|
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|
1597 if (!InstanceKlass::cast(kh())->find_field_from_offset(offset, false, &fd)) { |
| 0 | 1598 assert(false, "cannot find instance field"); |
|
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|
1599 return false; |
| 0 | 1600 } |
| 1601 } | |
|
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|
1602 return true; |
|
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|
1603 } |
|
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|
1604 |
|
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|
1605 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) |
|
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|
1606 // field is a handle to a java.lang.reflect.Field object |
|
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|
1607 assert(field != NULL, "illegal field"); |
|
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|
1608 JVMWrapper("JVM_GetFieldAnnotations"); |
|
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|
1609 |
|
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|
1610 fieldDescriptor fd; |
|
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|
1611 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
|
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|
1612 if (!gotFd) { |
|
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|
1613 return NULL; |
|
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|
1614 } |
| 0 | 1615 |
|
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|
1616 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.annotations(), THREAD)); |
| 0 | 1617 JVM_END |
| 1618 | |
| 1619 | |
|
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|
1620 static Method* jvm_get_method_common(jobject method) { |
| 0 | 1621 // some of this code was adapted from from jni_FromReflectedMethod |
| 1622 | |
| 1623 oop reflected = JNIHandles::resolve_non_null(method); | |
| 1624 oop mirror = NULL; | |
| 1625 int slot = 0; | |
| 1626 | |
| 1142 | 1627 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
| 0 | 1628 mirror = java_lang_reflect_Constructor::clazz(reflected); |
| 1629 slot = java_lang_reflect_Constructor::slot(reflected); | |
| 1630 } else { | |
| 1142 | 1631 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
| 0 | 1632 "wrong type"); |
| 1633 mirror = java_lang_reflect_Method::clazz(reflected); | |
| 1634 slot = java_lang_reflect_Method::slot(reflected); | |
| 1635 } | |
|
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|
1636 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 1637 |
|
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changeset
|
1638 Method* m = InstanceKlass::cast(k)->method_with_idnum(slot); |
|
8818
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changeset
|
1639 assert(m != NULL, "cannot find method"); |
|
1916ca1dec2f
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diff
changeset
|
1640 return m; // caller has to deal with NULL in product mode |
| 0 | 1641 } |
| 1642 | |
| 1643 | |
| 1644 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
| 1645 JVMWrapper("JVM_GetMethodAnnotations"); | |
| 1646 | |
| 1647 // method is a handle to a java.lang.reflect.Method object | |
|
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|
1648 Method* m = jvm_get_method_common(method); |
|
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changeset
|
1649 if (m == NULL) { |
|
1916ca1dec2f
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|
1650 return NULL; |
|
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diff
changeset
|
1651 } |
|
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changeset
|
1652 |
|
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|
1653 return (jbyteArray) JNIHandles::make_local(env, |
|
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|
1654 Annotations::make_java_array(m->annotations(), THREAD)); |
| 0 | 1655 JVM_END |
| 1656 | |
| 1657 | |
| 1658 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
| 1659 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
| 1660 | |
| 1661 // method is a handle to a java.lang.reflect.Method object | |
|
7462
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changeset
|
1662 Method* m = jvm_get_method_common(method); |
|
8818
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changeset
|
1663 if (m == NULL) { |
|
1916ca1dec2f
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changeset
|
1664 return NULL; |
|
1916ca1dec2f
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diff
changeset
|
1665 } |
|
1916ca1dec2f
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changeset
|
1666 |
|
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|
1667 return (jbyteArray) JNIHandles::make_local(env, |
|
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|
1668 Annotations::make_java_array(m->annotation_default(), THREAD)); |
| 0 | 1669 JVM_END |
| 1670 | |
| 1671 | |
| 1672 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
| 1673 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
| 1674 | |
| 1675 // method is a handle to a java.lang.reflect.Method object | |
|
7462
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|
1676 Method* m = jvm_get_method_common(method); |
|
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changeset
|
1677 if (m == NULL) { |
|
1916ca1dec2f
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changeset
|
1678 return NULL; |
|
1916ca1dec2f
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diff
changeset
|
1679 } |
|
1916ca1dec2f
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changeset
|
1680 |
|
6725
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|
1681 return (jbyteArray) JNIHandles::make_local(env, |
|
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|
1682 Annotations::make_java_array(m->parameter_annotations(), THREAD)); |
| 0 | 1683 JVM_END |
| 1684 | |
|
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|
1685 /* Type use annotations support (JDK 1.8) */ |
|
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|
1686 |
|
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|
1687 JVM_ENTRY(jbyteArray, JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls)) |
|
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changeset
|
1688 assert (cls != NULL, "illegal class"); |
|
35431a769282
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changeset
|
1689 JVMWrapper("JVM_GetClassTypeAnnotations"); |
|
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changeset
|
1690 ResourceMark rm(THREAD); |
|
35431a769282
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changeset
|
1691 // Return null for arrays and primitives |
|
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changeset
|
1692 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
|
35431a769282
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|
1693 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
|
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|
1694 if (k->oop_is_instance()) { |
| 8031 | 1695 AnnotationArray* type_annotations = InstanceKlass::cast(k)->class_type_annotations(); |
|
7611
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|
1696 if (type_annotations != NULL) { |
| 8031 | 1697 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
|
7611
ff0a7943fd29
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|
1698 return (jbyteArray) JNIHandles::make_local(env, a); |
|
ff0a7943fd29
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changeset
|
1699 } |
|
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|
1700 } |
|
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|
1701 } |
|
35431a769282
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|
1702 return NULL; |
|
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|
1703 JVM_END |
|
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|
1704 |
|
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changeset
|
1705 JVM_ENTRY(jbyteArray, JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method)) |
|
1916ca1dec2f
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changeset
|
1706 assert (method != NULL, "illegal method"); |
|
1916ca1dec2f
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changeset
|
1707 JVMWrapper("JVM_GetMethodTypeAnnotations"); |
|
1916ca1dec2f
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|
1708 |
|
1916ca1dec2f
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changeset
|
1709 // method is a handle to a java.lang.reflect.Method object |
|
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changeset
|
1710 Method* m = jvm_get_method_common(method); |
|
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changeset
|
1711 if (m == NULL) { |
|
1916ca1dec2f
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|
1712 return NULL; |
|
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|
1713 } |
|
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|
1714 |
|
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|
1715 AnnotationArray* type_annotations = m->type_annotations(); |
|
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|
1716 if (type_annotations != NULL) { |
|
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|
1717 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
|
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|
1718 return (jbyteArray) JNIHandles::make_local(env, a); |
|
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|
1719 } |
|
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|
1720 |
|
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|
1721 return NULL; |
|
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|
1722 JVM_END |
|
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|
1723 |
|
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|
1724 JVM_ENTRY(jbyteArray, JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field)) |
|
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|
1725 assert (field != NULL, "illegal field"); |
|
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|
1726 JVMWrapper("JVM_GetFieldTypeAnnotations"); |
|
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|
1727 |
|
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|
1728 fieldDescriptor fd; |
|
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|
1729 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
|
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|
1730 if (!gotFd) { |
|
1916ca1dec2f
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|
1731 return NULL; |
|
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|
1732 } |
|
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|
1733 |
|
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|
1734 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.type_annotations(), THREAD)); |
|
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|
1735 JVM_END |
|
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|
1736 |
|
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|
1737 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { |
|
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|
1738 if (!cp->is_within_bounds(index)) { |
|
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|
1739 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); |
|
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|
1740 } |
|
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|
1741 } |
|
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|
1742 |
|
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|
1743 JVM_ENTRY(jobjectArray, JVM_GetMethodParameters(JNIEnv *env, jobject method)) |
|
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|
1744 { |
|
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|
1745 JVMWrapper("JVM_GetMethodParameters"); |
|
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|
1746 // method is a handle to a java.lang.reflect.Method object |
|
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|
1747 Method* method_ptr = jvm_get_method_common(method); |
|
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|
1748 methodHandle mh (THREAD, method_ptr); |
|
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|
1749 Handle reflected_method (THREAD, JNIHandles::resolve_non_null(method)); |
|
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|
1750 const int num_params = mh->method_parameters_length(); |
|
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|
1751 |
|
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|
1752 if (0 != num_params) { |
|
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|
1753 // make sure all the symbols are properly formatted |
|
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|
1754 for (int i = 0; i < num_params; i++) { |
|
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|
1755 MethodParametersElement* params = mh->method_parameters_start(); |
|
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|
1756 int index = params[i].name_cp_index; |
|
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|
1757 bounds_check(mh->constants(), index, CHECK_NULL); |
|
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|
1758 |
|
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|
1759 if (0 != index && !mh->constants()->tag_at(index).is_utf8()) { |
|
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|
1760 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), |
|
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|
1761 "Wrong type at constant pool index"); |
|
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|
1762 } |
|
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|
1763 |
|
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|
1764 } |
|
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|
1765 |
|
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|
1766 objArrayOop result_oop = oopFactory::new_objArray(SystemDictionary::reflect_Parameter_klass(), num_params, CHECK_NULL); |
|
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|
1767 objArrayHandle result (THREAD, result_oop); |
|
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|
1768 |
|
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|
1769 for (int i = 0; i < num_params; i++) { |
|
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|
1770 MethodParametersElement* params = mh->method_parameters_start(); |
|
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|
1771 // For a 0 index, give a NULL symbol |
|
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8003557: NPG: Klass* const k should be const Klass* k.
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|
1772 Symbol* sym = 0 != params[i].name_cp_index ? |
|
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|
1773 mh->constants()->symbol_at(params[i].name_cp_index) : NULL; |
|
7983
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8006949: Update hotspot for MethodParameters format change
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|
1774 int flags = params[i].flags; |
|
7462
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|
1775 oop param = Reflection::new_parameter(reflected_method, i, sym, |
|
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|
1776 flags, CHECK_NULL); |
|
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|
1777 result->obj_at_put(i, param); |
|
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|
1778 } |
|
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|
1779 return (jobjectArray)JNIHandles::make_local(env, result()); |
|
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|
1780 } else { |
|
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|
1781 return (jobjectArray)NULL; |
|
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|
1782 } |
|
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|
1783 } |
|
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|
1784 JVM_END |
| 0 | 1785 |
| 1786 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
| 1787 | |
| 1788 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1789 { | |
| 1790 JVMWrapper("JVM_GetClassDeclaredFields"); | |
| 1791 JvmtiVMObjectAllocEventCollector oam; | |
| 1792 | |
| 1793 // Exclude primitive types and array types | |
| 1794 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1795 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
| 0 | 1796 // Return empty array |
| 1142 | 1797 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
| 0 | 1798 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1799 } | |
| 1800 | |
|
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1801 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
| 0 | 1802 constantPoolHandle cp(THREAD, k->constants()); |
| 1803 | |
| 1804 // Ensure class is linked | |
| 1805 k->link_class(CHECK_NULL); | |
| 1806 | |
| 1807 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
| 1808 bool skip_backtrace = false; | |
| 1809 | |
| 1810 // Allocate result | |
| 1811 int num_fields; | |
| 1812 | |
| 1813 if (publicOnly) { | |
| 1814 num_fields = 0; | |
| 3938 | 1815 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
| 1816 if (fs.access_flags().is_public()) ++num_fields; | |
| 0 | 1817 } |
| 1818 } else { | |
| 3938 | 1819 num_fields = k->java_fields_count(); |
| 0 | 1820 |
| 1142 | 1821 if (k() == SystemDictionary::Throwable_klass()) { |
| 0 | 1822 num_fields--; |
| 1823 skip_backtrace = true; | |
| 1824 } | |
| 1825 } | |
| 1826 | |
| 1142 | 1827 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
| 0 | 1828 objArrayHandle result (THREAD, r); |
| 1829 | |
| 1830 int out_idx = 0; | |
| 1831 fieldDescriptor fd; | |
| 3938 | 1832 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
| 0 | 1833 if (skip_backtrace) { |
| 1834 // 4496456 skip java.lang.Throwable.backtrace | |
| 3938 | 1835 int offset = fs.offset(); |
| 0 | 1836 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
| 1837 } | |
| 1838 | |
| 3938 | 1839 if (!publicOnly || fs.access_flags().is_public()) { |
|
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|
1840 fd.reinitialize(k(), fs.index()); |
| 0 | 1841 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
| 1842 result->obj_at_put(out_idx, field); | |
| 1843 ++out_idx; | |
| 1844 } | |
| 1845 } | |
| 1846 assert(out_idx == num_fields, "just checking"); | |
| 1847 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1848 } | |
| 1849 JVM_END | |
| 1850 | |
|
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|
1851 static bool select_method(methodHandle method, bool want_constructor) { |
|
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|
1852 if (want_constructor) { |
|
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|
1853 return (method->is_initializer() && !method->is_static()); |
|
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|
1854 } else { |
|
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|
1855 return (!method->is_initializer() && !method->is_overpass()); |
|
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|
1856 } |
|
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|
1857 } |
|
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|
1858 |
|
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|
1859 static jobjectArray get_class_declared_methods_helper( |
|
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|
1860 JNIEnv *env, |
|
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|
1861 jclass ofClass, jboolean publicOnly, |
|
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|
1862 bool want_constructor, |
|
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|
1863 Klass* klass, TRAPS) { |
|
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|
1864 |
| 0 | 1865 JvmtiVMObjectAllocEventCollector oam; |
| 1866 | |
| 1867 // Exclude primitive types and array types | |
| 1868 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
| 6983 | 1869 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
| 0 | 1870 // Return empty array |
|
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|
1871 oop res = oopFactory::new_objArray(klass, 0, CHECK_NULL); |
| 0 | 1872 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1873 } | |
| 1874 | |
|
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|
1875 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
| 0 | 1876 |
| 1877 // Ensure class is linked | |
| 1878 k->link_class(CHECK_NULL); | |
| 1879 | |
|
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|
1880 Array<Method*>* methods = k->methods(); |
| 0 | 1881 int methods_length = methods->length(); |
|
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|
1882 |
|
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|
1883 // Save original method_idnum in case of redefinition, which can change |
|
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|
1884 // the idnum of obsolete methods. The new method will have the same idnum |
|
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|
1885 // but if we refresh the methods array, the counts will be wrong. |
|
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|
1886 ResourceMark rm(THREAD); |
|
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|
1887 GrowableArray<int>* idnums = new GrowableArray<int>(methods_length); |
| 0 | 1888 int num_methods = 0; |
| 1889 | |
|
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|
1890 for (int i = 0; i < methods_length; i++) { |
|
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1891 methodHandle method(THREAD, methods->at(i)); |
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1892 if (select_method(method, want_constructor)) { |
| 0 | 1893 if (!publicOnly || method->is_public()) { |
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1894 idnums->push(method->method_idnum()); |
| 0 | 1895 ++num_methods; |
| 1896 } | |
| 1897 } | |
| 1898 } | |
| 1899 | |
| 1900 // Allocate result | |
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1901 objArrayOop r = oopFactory::new_objArray(klass, num_methods, CHECK_NULL); |
| 0 | 1902 objArrayHandle result (THREAD, r); |
| 1903 | |
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1904 // Now just put the methods that we selected above, but go by their idnum |
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1905 // in case of redefinition. The methods can be redefined at any safepoint, |
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1906 // so above when allocating the oop array and below when creating reflect |
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1907 // objects. |
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1908 for (int i = 0; i < num_methods; i++) { |
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1909 methodHandle method(THREAD, k->method_with_idnum(idnums->at(i))); |
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1910 if (method.is_null()) { |
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1911 // Method may have been deleted and seems this API can handle null |
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1912 // Otherwise should probably put a method that throws NSME |
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1913 result->obj_at_put(i, NULL); |
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1914 } else { |
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1915 oop m; |
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1916 if (want_constructor) { |
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1917 m = Reflection::new_constructor(method, CHECK_NULL); |
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1918 } else { |
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1919 m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); |
| 0 | 1920 } |
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1921 result->obj_at_put(i, m); |
| 0 | 1922 } |
| 1923 } | |
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1924 |
| 0 | 1925 return (jobjectArray) JNIHandles::make_local(env, result()); |
| 1926 } | |
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1927 |
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1928 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) |
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1929 { |
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1930 JVMWrapper("JVM_GetClassDeclaredMethods"); |
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1931 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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1932 /*want_constructor*/ false, |
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1933 SystemDictionary::reflect_Method_klass(), THREAD); |
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1934 } |
| 0 | 1935 JVM_END |
| 1936 | |
| 1937 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1938 { | |
| 1939 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
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1940 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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1941 /*want_constructor*/ true, |
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1942 SystemDictionary::reflect_Constructor_klass(), THREAD); |
| 0 | 1943 } |
| 1944 JVM_END | |
| 1945 | |
| 1946 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
| 1947 { | |
| 1948 JVMWrapper("JVM_GetClassAccessFlags"); | |
| 1949 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1950 // Primitive type | |
| 1951 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 1952 } | |
| 1953 | |
| 6983 | 1954 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 1955 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; |
| 1956 } | |
| 1957 JVM_END | |
| 1958 | |
| 1959 | |
| 1960 // Constant pool access ////////////////////////////////////////////////////////// | |
| 1961 | |
| 1962 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
| 1963 { | |
| 1964 JVMWrapper("JVM_GetClassConstantPool"); | |
| 1965 JvmtiVMObjectAllocEventCollector oam; | |
| 1966 | |
| 1967 // Return null for primitives and arrays | |
| 1968 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
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1969 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1970 if (k->oop_is_instance()) { |
| 0 | 1971 instanceKlassHandle k_h(THREAD, k); |
| 1972 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
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1973 sun_reflect_ConstantPool::set_cp(jcp(), k_h->constants()); |
| 0 | 1974 return JNIHandles::make_local(jcp()); |
| 1975 } | |
| 1976 } | |
| 1977 return NULL; | |
| 1978 } | |
| 1979 JVM_END | |
| 1980 | |
| 1981 | |
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1982 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject obj, jobject unused)) |
| 0 | 1983 { |
| 1984 JVMWrapper("JVM_ConstantPoolGetSize"); | |
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1985 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1986 return cp->length(); |
| 1987 } | |
| 1988 JVM_END | |
| 1989 | |
| 1990 | |
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1991 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 1992 { |
| 1993 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
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1994 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1995 bounds_check(cp, index, CHECK_NULL); |
| 1996 constantTag tag = cp->tag_at(index); | |
| 1997 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 1998 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1999 } | |
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2000 Klass* k = cp->klass_at(index, CHECK_NULL); |
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2001 return (jclass) JNIHandles::make_local(k->java_mirror()); |
| 0 | 2002 } |
| 2003 JVM_END | |
| 2004 | |
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2005 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2006 { |
| 2007 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
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2008 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2009 bounds_check(cp, index, CHECK_NULL); |
| 2010 constantTag tag = cp->tag_at(index); | |
| 2011 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 2012 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2013 } | |
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2014 Klass* k = ConstantPool::klass_at_if_loaded(cp, index); |
| 0 | 2015 if (k == NULL) return NULL; |
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2016 return (jclass) JNIHandles::make_local(k->java_mirror()); |
| 0 | 2017 } |
| 2018 JVM_END | |
| 2019 | |
| 2020 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 2021 constantTag tag = cp->tag_at(index); | |
| 2022 if (!tag.is_method() && !tag.is_interface_method()) { | |
| 2023 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2024 } | |
| 2025 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2026 Klass* k_o; |
| 0 | 2027 if (force_resolution) { |
| 2028 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 2029 } else { | |
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2030 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
| 0 | 2031 if (k_o == NULL) return NULL; |
| 2032 } | |
| 2033 instanceKlassHandle k(THREAD, k_o); | |
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2034 Symbol* name = cp->uncached_name_ref_at(index); |
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2035 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 2036 methodHandle m (THREAD, k->find_method(name, sig)); |
| 2037 if (m.is_null()) { | |
| 2038 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
| 2039 } | |
| 2040 oop method; | |
| 2041 if (!m->is_initializer() || m->is_static()) { | |
| 2042 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
| 2043 } else { | |
| 2044 method = Reflection::new_constructor(m, CHECK_NULL); | |
| 2045 } | |
| 2046 return JNIHandles::make_local(method); | |
| 2047 } | |
| 2048 | |
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2049 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2050 { |
| 2051 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
| 2052 JvmtiVMObjectAllocEventCollector oam; | |
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2053 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2054 bounds_check(cp, index, CHECK_NULL); |
| 2055 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
| 2056 return res; | |
| 2057 } | |
| 2058 JVM_END | |
| 2059 | |
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2060 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2061 { |
| 2062 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
| 2063 JvmtiVMObjectAllocEventCollector oam; | |
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2064 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2065 bounds_check(cp, index, CHECK_NULL); |
| 2066 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
| 2067 return res; | |
| 2068 } | |
| 2069 JVM_END | |
| 2070 | |
| 2071 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 2072 constantTag tag = cp->tag_at(index); | |
| 2073 if (!tag.is_field()) { | |
| 2074 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2075 } | |
| 2076 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2077 Klass* k_o; |
| 0 | 2078 if (force_resolution) { |
| 2079 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 2080 } else { | |
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2081 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
| 0 | 2082 if (k_o == NULL) return NULL; |
| 2083 } | |
| 2084 instanceKlassHandle k(THREAD, k_o); | |
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2085 Symbol* name = cp->uncached_name_ref_at(index); |
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2086 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 2087 fieldDescriptor fd; |
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2088 Klass* target_klass = k->find_field(name, sig, &fd); |
| 0 | 2089 if (target_klass == NULL) { |
| 2090 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
| 2091 } | |
| 2092 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
| 2093 return JNIHandles::make_local(field); | |
| 2094 } | |
| 2095 | |
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2096 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject obj, jobject unusedl, jint index)) |
| 0 | 2097 { |
| 2098 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
| 2099 JvmtiVMObjectAllocEventCollector oam; | |
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2100 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2101 bounds_check(cp, index, CHECK_NULL); |
| 2102 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
| 2103 return res; | |
| 2104 } | |
| 2105 JVM_END | |
| 2106 | |
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2107 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2108 { |
| 2109 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
| 2110 JvmtiVMObjectAllocEventCollector oam; | |
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2111 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2112 bounds_check(cp, index, CHECK_NULL); |
| 2113 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
| 2114 return res; | |
| 2115 } | |
| 2116 JVM_END | |
| 2117 | |
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2118 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2119 { |
| 2120 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
| 2121 JvmtiVMObjectAllocEventCollector oam; | |
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2122 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2123 bounds_check(cp, index, CHECK_NULL); |
| 2124 constantTag tag = cp->tag_at(index); | |
| 2125 if (!tag.is_field_or_method()) { | |
| 2126 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2127 } | |
| 2128 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2129 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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2130 Symbol* member_name = cp->uncached_name_ref_at(index); |
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2131 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
| 1142 | 2132 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
| 0 | 2133 objArrayHandle dest(THREAD, dest_o); |
| 2134 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
| 2135 dest->obj_at_put(0, str()); | |
| 2136 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
| 2137 dest->obj_at_put(1, str()); | |
| 2138 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
| 2139 dest->obj_at_put(2, str()); | |
| 2140 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 2141 } | |
| 2142 JVM_END | |
| 2143 | |
|
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2144 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2145 { |
| 2146 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
|
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2147 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2148 bounds_check(cp, index, CHECK_0); |
| 2149 constantTag tag = cp->tag_at(index); | |
| 2150 if (!tag.is_int()) { | |
| 2151 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2152 } | |
| 2153 return cp->int_at(index); | |
| 2154 } | |
| 2155 JVM_END | |
| 2156 | |
|
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2157 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2158 { |
| 2159 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
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2160 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2161 bounds_check(cp, index, CHECK_(0L)); |
| 2162 constantTag tag = cp->tag_at(index); | |
| 2163 if (!tag.is_long()) { | |
| 2164 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2165 } | |
| 2166 return cp->long_at(index); | |
| 2167 } | |
| 2168 JVM_END | |
| 2169 | |
|
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2170 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2171 { |
| 2172 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
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2173 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2174 bounds_check(cp, index, CHECK_(0.0f)); |
| 2175 constantTag tag = cp->tag_at(index); | |
| 2176 if (!tag.is_float()) { | |
| 2177 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2178 } | |
| 2179 return cp->float_at(index); | |
| 2180 } | |
| 2181 JVM_END | |
| 2182 | |
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2183 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2184 { |
| 2185 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
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2186 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2187 bounds_check(cp, index, CHECK_(0.0)); |
| 2188 constantTag tag = cp->tag_at(index); | |
| 2189 if (!tag.is_double()) { | |
| 2190 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2191 } | |
| 2192 return cp->double_at(index); | |
| 2193 } | |
| 2194 JVM_END | |
| 2195 | |
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2196 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2197 { |
| 2198 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
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2199 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2200 bounds_check(cp, index, CHECK_NULL); |
| 2201 constantTag tag = cp->tag_at(index); | |
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2202 if (!tag.is_string()) { |
| 0 | 2203 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
| 2204 } | |
| 2205 oop str = cp->string_at(index, CHECK_NULL); | |
| 2206 return (jstring) JNIHandles::make_local(str); | |
| 2207 } | |
| 2208 JVM_END | |
| 2209 | |
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2210 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2211 { |
| 2212 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
| 2213 JvmtiVMObjectAllocEventCollector oam; | |
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2214 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2215 bounds_check(cp, index, CHECK_NULL); |
| 2216 constantTag tag = cp->tag_at(index); | |
| 2217 if (!tag.is_symbol()) { | |
| 2218 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2219 } | |
|
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2220 Symbol* sym = cp->symbol_at(index); |
| 0 | 2221 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 2222 return (jstring) JNIHandles::make_local(str()); | |
| 2223 } | |
| 2224 JVM_END | |
| 2225 | |
| 2226 | |
| 2227 // Assertion support. ////////////////////////////////////////////////////////// | |
| 2228 | |
| 2229 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
| 2230 JVMWrapper("JVM_DesiredAssertionStatus"); | |
| 2231 assert(cls != NULL, "bad class"); | |
| 2232 | |
| 2233 oop r = JNIHandles::resolve(cls); | |
| 2234 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
| 2235 if (java_lang_Class::is_primitive(r)) return false; | |
| 2236 | |
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2237 Klass* k = java_lang_Class::as_Klass(r); |
| 6983 | 2238 assert(k->oop_is_instance(), "must be an instance klass"); |
| 2239 if (! k->oop_is_instance()) return false; | |
| 0 | 2240 |
| 2241 ResourceMark rm(THREAD); | |
| 6983 | 2242 const char* name = k->name()->as_C_string(); |
| 2243 bool system_class = k->class_loader() == NULL; | |
| 0 | 2244 return JavaAssertions::enabled(name, system_class); |
| 2245 | |
| 2246 JVM_END | |
| 2247 | |
| 2248 | |
| 2249 // Return a new AssertionStatusDirectives object with the fields filled in with | |
| 2250 // command-line assertion arguments (i.e., -ea, -da). | |
| 2251 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
| 2252 JVMWrapper("JVM_AssertionStatusDirectives"); | |
| 2253 JvmtiVMObjectAllocEventCollector oam; | |
| 2254 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
| 2255 return JNIHandles::make_local(env, asd); | |
| 2256 JVM_END | |
| 2257 | |
| 2258 // Verification //////////////////////////////////////////////////////////////////////////////// | |
| 2259 | |
| 2260 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
| 2261 | |
| 2262 // RedefineClasses support: bug 6214132 caused verification to fail. | |
| 2263 // All functions from this section should call the jvmtiThreadSate function: | |
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2264 // Klass* class_to_verify_considering_redefinition(Klass* klass). |
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2265 // The function returns a Klass* of the _scratch_class if the verifier |
| 0 | 2266 // was invoked in the middle of the class redefinition. |
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2267 // Otherwise it returns its argument value which is the _the_class Klass*. |
| 0 | 2268 // Please, refer to the description in the jvmtiThreadSate.hpp. |
| 2269 | |
| 2270 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
| 2271 JVMWrapper("JVM_GetClassNameUTF"); | |
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2272 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2273 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2274 return k->name()->as_utf8(); |
| 0 | 2275 JVM_END |
| 2276 | |
| 2277 | |
| 2278 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
| 2279 JVMWrapper("JVM_GetClassCPTypes"); | |
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2280 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2281 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2282 // types will have length zero if this is not an InstanceKlass |
| 0 | 2283 // (length is determined by call to JVM_GetClassCPEntriesCount) |
| 6983 | 2284 if (k->oop_is_instance()) { |
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2285 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2286 for (int index = cp->length() - 1; index >= 0; index--) { |
| 2287 constantTag tag = cp->tag_at(index); | |
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2288 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : tag.value(); |
| 0 | 2289 } |
| 2290 } | |
| 2291 JVM_END | |
| 2292 | |
| 2293 | |
| 2294 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
| 2295 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
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2296 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2297 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2298 if (!k->oop_is_instance()) |
| 0 | 2299 return 0; |
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2300 return InstanceKlass::cast(k)->constants()->length(); |
| 0 | 2301 JVM_END |
| 2302 | |
| 2303 | |
| 2304 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
| 2305 JVMWrapper("JVM_GetClassFieldsCount"); | |
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2306 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2307 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2308 if (!k->oop_is_instance()) |
| 0 | 2309 return 0; |
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2310 return InstanceKlass::cast(k)->java_fields_count(); |
| 0 | 2311 JVM_END |
| 2312 | |
| 2313 | |
| 2314 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
| 2315 JVMWrapper("JVM_GetClassMethodsCount"); | |
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2316 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2317 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2318 if (!k->oop_is_instance()) |
| 0 | 2319 return 0; |
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2320 return InstanceKlass::cast(k)->methods()->length(); |
| 0 | 2321 JVM_END |
| 2322 | |
| 2323 | |
| 2324 // The following methods, used for the verifier, are never called with | |
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2325 // array klasses, so a direct cast to InstanceKlass is safe. |
| 0 | 2326 // Typically, these methods are called in a loop with bounds determined |
| 2327 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
| 2328 // zero for arrays. | |
| 2329 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
| 2330 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
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2331 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2332 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2333 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2334 int length = method->checked_exceptions_length(); |
| 0 | 2335 if (length > 0) { |
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2336 CheckedExceptionElement* table= method->checked_exceptions_start(); |
| 0 | 2337 for (int i = 0; i < length; i++) { |
| 2338 exceptions[i] = table[i].class_cp_index; | |
| 2339 } | |
| 2340 } | |
| 2341 JVM_END | |
| 2342 | |
| 2343 | |
| 2344 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
| 2345 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
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2346 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2347 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2348 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2349 return method->checked_exceptions_length(); |
| 0 | 2350 JVM_END |
| 2351 | |
| 2352 | |
| 2353 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
| 2354 JVMWrapper("JVM_GetMethodIxByteCode"); | |
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2355 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2356 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2357 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2358 memcpy(code, method->code_base(), method->code_size()); |
| 0 | 2359 JVM_END |
| 2360 | |
| 2361 | |
| 2362 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
| 2363 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
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2364 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2365 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2366 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2367 return method->code_size(); |
| 0 | 2368 JVM_END |
| 2369 | |
| 2370 | |
| 2371 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
| 2372 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
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2373 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2374 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2375 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2376 ExceptionTable extable(method); |
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2377 entry->start_pc = extable.start_pc(entry_index); |
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2378 entry->end_pc = extable.end_pc(entry_index); |
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2379 entry->handler_pc = extable.handler_pc(entry_index); |
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2380 entry->catchType = extable.catch_type_index(entry_index); |
| 0 | 2381 JVM_END |
| 2382 | |
| 2383 | |
| 2384 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
| 2385 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
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2386 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2387 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2388 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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2389 return method->exception_table_length(); |
| 0 | 2390 JVM_END |
| 2391 | |
| 2392 | |
| 2393 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
| 2394 JVMWrapper("JVM_GetMethodIxModifiers"); | |
|
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2395 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2396 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2397 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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2398 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
| 0 | 2399 JVM_END |
| 2400 | |
| 2401 | |
| 2402 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
| 2403 JVMWrapper("JVM_GetFieldIxModifiers"); | |
|
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2404 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2405 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2406 return InstanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
| 0 | 2407 JVM_END |
| 2408 | |
| 2409 | |
| 2410 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
| 2411 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
|
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|
2412 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2413 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2414 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2415 return method->max_locals(); |
| 0 | 2416 JVM_END |
| 2417 | |
| 2418 | |
| 2419 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
| 2420 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
|
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|
2421 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2422 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2423 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2424 return method->size_of_parameters(); |
| 0 | 2425 JVM_END |
| 2426 | |
| 2427 | |
| 2428 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
| 2429 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
|
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|
2430 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2431 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2432 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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2433 return method->verifier_max_stack(); |
| 0 | 2434 JVM_END |
| 2435 | |
| 2436 | |
| 2437 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
| 2438 JVMWrapper("JVM_IsConstructorIx"); | |
| 2439 ResourceMark rm(THREAD); | |
|
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2440 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2441 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2442 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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2443 return method->name() == vmSymbols::object_initializer_name(); |
| 0 | 2444 JVM_END |
| 2445 | |
| 2446 | |
|
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|
2447 JVM_QUICK_ENTRY(jboolean, JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cls, int method_index)) |
|
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|
2448 JVMWrapper("JVM_IsVMGeneratedMethodIx"); |
|
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|
2449 ResourceMark rm(THREAD); |
|
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|
2450 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
|
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|
2451 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2452 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2453 return method->is_overpass(); |
|
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|
2454 JVM_END |
|
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|
2455 |
| 0 | 2456 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) |
| 2457 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
|
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2458 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2459 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2460 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2461 return method->name()->as_utf8(); |
| 0 | 2462 JVM_END |
| 2463 | |
| 2464 | |
| 2465 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
| 2466 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
|
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|
2467 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2468 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2469 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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2470 return method->signature()->as_utf8(); |
| 0 | 2471 JVM_END |
| 2472 | |
| 2473 /** | |
| 2474 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
| 2475 * read entries in the constant pool. Since the old verifier always | |
| 2476 * works on a copy of the code, it will not see any rewriting that | |
| 2477 * may possibly occur in the middle of verification. So it is important | |
| 2478 * that nothing it calls tries to use the cpCache instead of the raw | |
| 2479 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
| 2480 */ | |
| 2481 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2482 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
|
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|
2483 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2484 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2485 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2486 switch (cp->tag_at(cp_index).value()) { |
| 2487 case JVM_CONSTANT_Fieldref: | |
| 2488 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
| 2489 default: | |
| 2490 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
| 2491 } | |
| 2492 ShouldNotReachHere(); | |
| 2493 return NULL; | |
| 2494 JVM_END | |
| 2495 | |
| 2496 | |
| 2497 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2498 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
|
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|
2499 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2500 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2501 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2502 switch (cp->tag_at(cp_index).value()) { |
| 2503 case JVM_CONSTANT_InterfaceMethodref: | |
| 2504 case JVM_CONSTANT_Methodref: | |
|
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|
2505 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2506 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
| 2507 default: | |
| 2508 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
| 2509 } | |
| 2510 ShouldNotReachHere(); | |
| 2511 return NULL; | |
| 2512 JVM_END | |
| 2513 | |
| 2514 | |
| 2515 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2516 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
|
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|
2517 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2518 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2519 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2520 switch (cp->tag_at(cp_index).value()) { |
| 2521 case JVM_CONSTANT_InterfaceMethodref: | |
| 2522 case JVM_CONSTANT_Methodref: | |
|
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|
2523 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2524 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
| 2525 default: | |
| 2526 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
| 2527 } | |
| 2528 ShouldNotReachHere(); | |
| 2529 return NULL; | |
| 2530 JVM_END | |
| 2531 | |
| 2532 | |
| 2533 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2534 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
|
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|
2535 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2536 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2537 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2538 switch (cp->tag_at(cp_index).value()) { |
| 2539 case JVM_CONSTANT_Fieldref: | |
| 2540 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
| 2541 default: | |
| 2542 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
| 2543 } | |
| 2544 ShouldNotReachHere(); | |
| 2545 return NULL; | |
| 2546 JVM_END | |
| 2547 | |
| 2548 | |
| 2549 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2550 JVMWrapper("JVM_GetCPClassNameUTF"); | |
|
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|
2551 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2552 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2553 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
|
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|
2554 Symbol* classname = cp->klass_name_at(cp_index); |
| 0 | 2555 return classname->as_utf8(); |
| 2556 JVM_END | |
| 2557 | |
| 2558 | |
| 2559 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2560 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
|
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|
2561 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2562 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2563 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2564 switch (cp->tag_at(cp_index).value()) { |
| 2565 case JVM_CONSTANT_Fieldref: { | |
| 2566 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
|
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|
2567 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2568 return classname->as_utf8(); |
| 2569 } | |
| 2570 default: | |
| 2571 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
| 2572 } | |
| 2573 ShouldNotReachHere(); | |
| 2574 return NULL; | |
| 2575 JVM_END | |
| 2576 | |
| 2577 | |
| 2578 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2579 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
|
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|
2580 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2581 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2582 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2583 switch (cp->tag_at(cp_index).value()) { |
| 2584 case JVM_CONSTANT_Methodref: | |
| 2585 case JVM_CONSTANT_InterfaceMethodref: { | |
| 2586 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
|
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|
2587 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2588 return classname->as_utf8(); |
| 2589 } | |
| 2590 default: | |
| 2591 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
| 2592 } | |
| 2593 ShouldNotReachHere(); | |
| 2594 return NULL; | |
| 2595 JVM_END | |
| 2596 | |
| 2597 | |
| 3938 | 2598 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
| 0 | 2599 JVMWrapper("JVM_GetCPFieldModifiers"); |
|
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|
2600 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
|
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|
2601 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
| 0 | 2602 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 2603 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
|
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|
2604 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
|
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|
2605 ConstantPool* cp_called = InstanceKlass::cast(k_called)->constants(); |
| 0 | 2606 switch (cp->tag_at(cp_index).value()) { |
| 2607 case JVM_CONSTANT_Fieldref: { | |
|
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|
2608 Symbol* name = cp->uncached_name_ref_at(cp_index); |
|
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|
2609 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
| 3938 | 2610 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
| 2611 if (fs.name() == name && fs.signature() == signature) { | |
| 2612 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
| 0 | 2613 } |
| 2614 } | |
| 2615 return -1; | |
| 2616 } | |
| 2617 default: | |
| 2618 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
| 2619 } | |
| 2620 ShouldNotReachHere(); | |
| 2621 return 0; | |
| 2622 JVM_END | |
| 2623 | |
| 2624 | |
| 2625 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
| 2626 JVMWrapper("JVM_GetCPMethodModifiers"); | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6271
diff
changeset
|
2627 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
2628 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
| 0 | 2629 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 2630 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
2631 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2632 switch (cp->tag_at(cp_index).value()) { |
| 2633 case JVM_CONSTANT_Methodref: | |
| 2634 case JVM_CONSTANT_InterfaceMethodref: { | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
2635 Symbol* name = cp->uncached_name_ref_at(cp_index); |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
2636 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
2637 Array<Method*>* methods = InstanceKlass::cast(k_called)->methods(); |
| 0 | 2638 int methods_count = methods->length(); |
| 2639 for (int i = 0; i < methods_count; i++) { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
2640 Method* method = methods->at(i); |
| 0 | 2641 if (method->name() == name && method->signature() == signature) { |
| 2642 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 2643 } | |
| 2644 } | |
| 2645 return -1; | |
| 2646 } | |
| 2647 default: | |
| 2648 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
| 2649 } | |
| 2650 ShouldNotReachHere(); | |
| 2651 return 0; | |
| 2652 JVM_END | |
| 2653 | |
| 2654 | |
| 2655 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
| 2656 | |
| 2657 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
| 2658 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
| 2659 JVM_END | |
| 2660 | |
| 2661 | |
| 2662 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
| 2663 JVMWrapper("JVM_IsSameClassPackage"); | |
| 2664 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
| 2665 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
6271
diff
changeset
|
2666 Klass* klass1 = java_lang_Class::as_Klass(class1_mirror); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
2667 Klass* klass2 = java_lang_Class::as_Klass(class2_mirror); |
| 0 | 2668 return (jboolean) Reflection::is_same_class_package(klass1, klass2); |
| 2669 JVM_END | |
| 2670 | |
| 2671 | |
| 2672 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
| 2673 | |
| 2674 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
| 2675 JVMWrapper2("JVM_Open (%s)", fname); | |
| 2676 | |
| 2677 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2678 int result = os::open(fname, flags, mode); |
| 0 | 2679 if (result >= 0) { |
| 2680 return result; | |
| 2681 } else { | |
| 2682 switch(errno) { | |
| 2683 case EEXIST: | |
| 2684 return JVM_EEXIST; | |
| 2685 default: | |
| 2686 return -1; | |
| 2687 } | |
| 2688 } | |
| 2689 JVM_END | |
| 2690 | |
| 2691 | |
| 2692 JVM_LEAF(jint, JVM_Close(jint fd)) | |
| 2693 JVMWrapper2("JVM_Close (0x%x)", fd); | |
| 2694 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2695 return os::close(fd); |
| 0 | 2696 JVM_END |
| 2697 | |
| 2698 | |
| 2699 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
| 2700 JVMWrapper2("JVM_Read (0x%x)", fd); | |
| 2701 | |
| 2702 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2703 return (jint)os::restartable_read(fd, buf, nbytes); |
| 0 | 2704 JVM_END |
| 2705 | |
| 2706 | |
| 2707 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
| 2708 JVMWrapper2("JVM_Write (0x%x)", fd); | |
| 2709 | |
| 2710 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2711 return (jint)os::write(fd, buf, nbytes); |
| 0 | 2712 JVM_END |
| 2713 | |
| 2714 | |
| 2715 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
| 2716 JVMWrapper2("JVM_Available (0x%x)", fd); | |
| 2717 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2718 return os::available(fd, pbytes); |
| 0 | 2719 JVM_END |
| 2720 | |
| 2721 | |
| 2722 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
| 2723 JVMWrapper4("JVM_Lseek (0x%x, %Ld, %d)", fd, offset, whence); | |
| 2724 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2725 return os::lseek(fd, offset, whence); |
| 0 | 2726 JVM_END |
| 2727 | |
| 2728 | |
| 2729 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
| 2730 JVMWrapper3("JVM_SetLength (0x%x, %Ld)", fd, length); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2731 return os::ftruncate(fd, length); |
| 0 | 2732 JVM_END |
| 2733 | |
| 2734 | |
| 2735 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
| 2736 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
| 2737 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2738 return os::fsync(fd); |
| 0 | 2739 JVM_END |
| 2740 | |
| 2741 | |
| 2742 // Printing support ////////////////////////////////////////////////// | |
| 2743 extern "C" { | |
| 2744 | |
| 2745 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { | |
| 2746 // see bug 4399518, 4417214 | |
| 2747 if ((intptr_t)count <= 0) return -1; | |
| 2748 return vsnprintf(str, count, fmt, args); | |
| 2749 } | |
| 2750 | |
| 2751 | |
| 2752 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { | |
| 2753 va_list args; | |
| 2754 int len; | |
| 2755 va_start(args, fmt); | |
| 2756 len = jio_vsnprintf(str, count, fmt, args); | |
| 2757 va_end(args); | |
| 2758 return len; | |
| 2759 } | |
| 2760 | |
| 2761 | |
| 2762 int jio_fprintf(FILE* f, const char *fmt, ...) { | |
| 2763 int len; | |
| 2764 va_list args; | |
| 2765 va_start(args, fmt); | |
| 2766 len = jio_vfprintf(f, fmt, args); | |
| 2767 va_end(args); | |
| 2768 return len; | |
| 2769 } | |
| 2770 | |
| 2771 | |
| 2772 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { | |
| 2773 if (Arguments::vfprintf_hook() != NULL) { | |
| 2774 return Arguments::vfprintf_hook()(f, fmt, args); | |
| 2775 } else { | |
| 2776 return vfprintf(f, fmt, args); | |
| 2777 } | |
| 2778 } | |
| 2779 | |
| 2780 | |
| 2191 | 2781 JNIEXPORT int jio_printf(const char *fmt, ...) { |
| 0 | 2782 int len; |
| 2783 va_list args; | |
| 2784 va_start(args, fmt); | |
| 2785 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
| 2786 va_end(args); | |
| 2787 return len; | |
| 2788 } | |
| 2789 | |
| 2790 | |
| 2791 // HotSpot specific jio method | |
| 2792 void jio_print(const char* s) { | |
| 2793 // Try to make this function as atomic as possible. | |
| 2794 if (Arguments::vfprintf_hook() != NULL) { | |
| 2795 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
| 2796 } else { | |
|
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
431
diff
changeset
|
2797 // 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
parents:
431
diff
changeset
|
2798 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
| 0 | 2799 } |
| 2800 } | |
| 2801 | |
| 2802 } // Extern C | |
| 2803 | |
| 2804 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
| 2805 | |
| 2806 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
| 2807 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
| 2808 // OSThread objects. The exception to this rule is when the target object is the thread | |
| 2809 // doing the operation, in which case we know that the thread won't exit until the | |
| 2810 // operation is done (all exits being voluntary). There are a few cases where it is | |
| 2811 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
| 2812 // you are alive. While these can still happen, they are not subject to deadlocks if | |
| 2813 // the lock is held while the operation occurs (this is not the case for suspend, for | |
| 2814 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
| 2815 // implementation is local to this file, we always lock Threads_lock for that one. | |
| 2816 | |
| 2817 static void thread_entry(JavaThread* thread, TRAPS) { | |
| 2818 HandleMark hm(THREAD); | |
| 2819 Handle obj(THREAD, thread->threadObj()); | |
| 2820 JavaValue result(T_VOID); | |
| 2821 JavaCalls::call_virtual(&result, | |
| 2822 obj, | |
| 1142 | 2823 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
2824 vmSymbols::run_method_name(), |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
2825 vmSymbols::void_method_signature(), |
| 0 | 2826 THREAD); |
| 2827 } | |
| 2828 | |
| 2829 | |
| 2830 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
| 2831 JVMWrapper("JVM_StartThread"); | |
| 2832 JavaThread *native_thread = NULL; | |
| 2833 | |
| 2834 // We cannot hold the Threads_lock when we throw an exception, | |
| 2835 // due to rank ordering issues. Example: we might need to grab the | |
| 2836 // Heap_lock while we construct the exception. | |
| 2837 bool throw_illegal_thread_state = false; | |
| 2838 | |
| 2839 // We must release the Threads_lock before we can post a jvmti event | |
| 2840 // in Thread::start. | |
| 2841 { | |
| 2842 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
| 2843 // we operate. | |
| 2844 MutexLocker mu(Threads_lock); | |
| 2845 | |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2846 // Since JDK 5 the java.lang.Thread threadStatus is used to prevent |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2847 // re-starting an already started thread, so we should usually find |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2848 // that the JavaThread is null. However for a JNI attached thread |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2849 // there is a small window between the Thread object being created |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2850 // (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
dholmes
parents:
1980
diff
changeset
|
2851 // have to check for this |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2852 if (java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)) != NULL) { |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2853 throw_illegal_thread_state = true; |
| 0 | 2854 } else { |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2855 // We could also check the stillborn flag to see if this thread was already stopped, but |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2856 // for historical reasons we let the thread detect that itself when it starts running |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2857 |
| 0 | 2858 jlong size = |
| 2859 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
| 2860 // Allocate the C++ Thread structure and create the native thread. The | |
| 2861 // stack size retrieved from java is signed, but the constructor takes | |
| 2862 // size_t (an unsigned type), so avoid passing negative values which would | |
| 2863 // result in really large stacks. | |
| 2864 size_t sz = size > 0 ? (size_t) size : 0; | |
| 2865 native_thread = new JavaThread(&thread_entry, sz); | |
| 2866 | |
| 2867 // At this point it may be possible that no osthread was created for the | |
| 2868 // JavaThread due to lack of memory. Check for this situation and throw | |
| 2869 // an exception if necessary. Eventually we may want to change this so | |
| 2870 // that we only grab the lock if the thread was created successfully - | |
| 2871 // then we can also do this check and throw the exception in the | |
| 2872 // JavaThread constructor. | |
| 2873 if (native_thread->osthread() != NULL) { | |
| 2874 // Note: the current thread is not being used within "prepare". | |
| 2875 native_thread->prepare(jthread); | |
| 2876 } | |
| 2877 } | |
| 2878 } | |
| 2879 | |
| 2880 if (throw_illegal_thread_state) { | |
| 2881 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
| 2882 } | |
| 2883 | |
| 2884 assert(native_thread != NULL, "Starting null thread?"); | |
| 2885 | |
| 2886 if (native_thread->osthread() == NULL) { | |
| 2887 // No one should hold a reference to the 'native_thread'. | |
| 2888 delete native_thread; | |
| 2889 if (JvmtiExport::should_post_resource_exhausted()) { | |
| 2890 JvmtiExport::post_resource_exhausted( | |
| 2891 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
| 2892 "unable to create new native thread"); | |
| 2893 } | |
| 2894 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
| 2895 "unable to create new native thread"); | |
| 2896 } | |
| 2897 | |
| 2898 Thread::start(native_thread); | |
| 2899 | |
| 2900 JVM_END | |
| 2901 | |
| 2902 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
| 2903 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
| 2904 // but is thought to be reliable and simple. In the case, where the receiver is the | |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2905 // same thread as the sender, no safepoint is needed. |
| 0 | 2906 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
| 2907 JVMWrapper("JVM_StopThread"); | |
| 2908 | |
| 2909 oop java_throwable = JNIHandles::resolve(throwable); | |
| 2910 if (java_throwable == NULL) { | |
| 2911 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 2912 } | |
| 2913 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2914 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
|
4872
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4717
diff
changeset
|
2915 Events::log_exception(JavaThread::current(), |
|
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4717
diff
changeset
|
2916 "JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", |
|
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4717
diff
changeset
|
2917 receiver, (address)java_thread, throwable); |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2918 // First check if thread is alive |
| 0 | 2919 if (receiver != NULL) { |
| 2920 // Check if exception is getting thrown at self (use oop equality, since the | |
| 2921 // target object might exit) | |
| 2922 if (java_thread == thread->threadObj()) { | |
| 2923 THROW_OOP(java_throwable); | |
| 2924 } else { | |
| 2925 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
| 2926 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
| 2927 } | |
| 2928 } | |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2929 else { |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2930 // Either: |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2931 // - target thread has not been started before being stopped, or |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2932 // - target thread already terminated |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2933 // 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
dholmes
parents:
1980
diff
changeset
|
2934 // but that is overkill as it doesn't matter. We must set the |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2935 // stillborn flag for the first case, and if the thread has already |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2936 // exited setting this flag has no affect |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2937 java_lang_Thread::set_stillborn(java_thread); |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2938 } |
| 0 | 2939 JVM_END |
| 2940 | |
| 2941 | |
| 2942 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
| 2943 JVMWrapper("JVM_IsThreadAlive"); | |
| 2944 | |
| 2945 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
| 2946 return java_lang_Thread::is_alive(thread_oop); | |
| 2947 JVM_END | |
| 2948 | |
| 2949 | |
| 2950 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
| 2951 JVMWrapper("JVM_SuspendThread"); | |
| 2952 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2953 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
| 2954 | |
| 2955 if (receiver != NULL) { | |
| 2956 // thread has run and has not exited (still on threads list) | |
| 2957 | |
| 2958 { | |
| 2959 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
| 2960 if (receiver->is_external_suspend()) { | |
| 2961 // Don't allow nested external suspend requests. We can't return | |
| 2962 // an error from this interface so just ignore the problem. | |
| 2963 return; | |
| 2964 } | |
| 2965 if (receiver->is_exiting()) { // thread is in the process of exiting | |
| 2966 return; | |
| 2967 } | |
| 2968 receiver->set_external_suspend(); | |
| 2969 } | |
| 2970 | |
| 2971 // java_suspend() will catch threads in the process of exiting | |
| 2972 // and will ignore them. | |
| 2973 receiver->java_suspend(); | |
| 2974 | |
| 2975 // It would be nice to have the following assertion in all the | |
| 2976 // time, but it is possible for a racing resume request to have | |
| 2977 // resumed this thread right after we suspended it. Temporarily | |
| 2978 // enable this assertion if you are chasing a different kind of | |
| 2979 // bug. | |
| 2980 // | |
| 2981 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
| 2982 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
| 2983 } | |
| 2984 JVM_END | |
| 2985 | |
| 2986 | |
| 2987 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
| 2988 JVMWrapper("JVM_ResumeThread"); | |
| 2989 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
| 2990 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
| 2991 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
| 2992 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
| 2993 // looks at it. | |
| 2994 MutexLocker ml(Threads_lock); | |
| 2995 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 2996 if (thr != NULL) { | |
| 2997 // the thread has run and is not in the process of exiting | |
| 2998 thr->java_resume(); | |
| 2999 } | |
| 3000 JVM_END | |
| 3001 | |
| 3002 | |
| 3003 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
| 3004 JVMWrapper("JVM_SetThreadPriority"); | |
| 3005 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3006 MutexLocker ml(Threads_lock); | |
| 3007 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3008 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
| 3009 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 3010 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
| 3011 Thread::set_priority(thr, (ThreadPriority)prio); | |
| 3012 } | |
| 3013 JVM_END | |
| 3014 | |
| 3015 | |
| 3016 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
| 3017 JVMWrapper("JVM_Yield"); | |
| 3018 if (os::dont_yield()) return; | |
| 4006 | 3019 #ifndef USDT2 |
|
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|
3020 HS_DTRACE_PROBE0(hotspot, thread__yield); |
| 4006 | 3021 #else /* USDT2 */ |
| 3022 HOTSPOT_THREAD_YIELD(); | |
| 3023 #endif /* USDT2 */ | |
| 0 | 3024 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
| 3025 // Critical for similar threading behaviour | |
| 3026 if (ConvertYieldToSleep) { | |
| 3027 os::sleep(thread, MinSleepInterval, false); | |
| 3028 } else { | |
| 3029 os::yield(); | |
| 3030 } | |
| 3031 JVM_END | |
| 3032 | |
| 3033 | |
| 3034 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
| 3035 JVMWrapper("JVM_Sleep"); | |
| 3036 | |
| 3037 if (millis < 0) { | |
| 3038 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
| 3039 } | |
| 3040 | |
| 3041 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
| 3042 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 3043 } | |
| 3044 | |
| 3045 // Save current thread state and restore it at the end of this block. | |
| 3046 // And set new thread state to SLEEPING. | |
| 3047 JavaThreadSleepState jtss(thread); | |
| 3048 | |
| 4006 | 3049 #ifndef USDT2 |
|
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3050 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); |
| 4006 | 3051 #else /* USDT2 */ |
| 3052 HOTSPOT_THREAD_SLEEP_BEGIN( | |
| 3053 millis); | |
| 3054 #endif /* USDT2 */ | |
|
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|
3055 |
| 10405 | 3056 EventThreadSleep event; |
| 3057 | |
| 0 | 3058 if (millis == 0) { |
| 3059 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
| 3060 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
| 3061 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
| 3062 // for SOLARIS | |
| 3063 if (ConvertSleepToYield) { | |
| 3064 os::yield(); | |
| 3065 } else { | |
| 3066 ThreadState old_state = thread->osthread()->get_state(); | |
| 3067 thread->osthread()->set_state(SLEEPING); | |
| 3068 os::sleep(thread, MinSleepInterval, false); | |
| 3069 thread->osthread()->set_state(old_state); | |
| 3070 } | |
| 3071 } else { | |
| 3072 ThreadState old_state = thread->osthread()->get_state(); | |
| 3073 thread->osthread()->set_state(SLEEPING); | |
| 3074 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
| 3075 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
| 3076 // us while we were sleeping. We do not overwrite those. | |
| 3077 if (!HAS_PENDING_EXCEPTION) { | |
| 10405 | 3078 if (event.should_commit()) { |
| 3079 event.set_time(millis); | |
| 3080 event.commit(); | |
| 3081 } | |
| 4006 | 3082 #ifndef USDT2 |
|
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|
3083 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); |
| 4006 | 3084 #else /* USDT2 */ |
| 3085 HOTSPOT_THREAD_SLEEP_END( | |
| 3086 1); | |
| 3087 #endif /* USDT2 */ | |
| 0 | 3088 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
| 3089 // to properly restore the thread state. That's likely wrong. | |
| 3090 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 3091 } | |
| 3092 } | |
| 3093 thread->osthread()->set_state(old_state); | |
| 3094 } | |
| 10405 | 3095 if (event.should_commit()) { |
| 3096 event.set_time(millis); | |
| 3097 event.commit(); | |
| 3098 } | |
| 4006 | 3099 #ifndef USDT2 |
|
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|
3100 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); |
| 4006 | 3101 #else /* USDT2 */ |
| 3102 HOTSPOT_THREAD_SLEEP_END( | |
| 3103 0); | |
| 3104 #endif /* USDT2 */ | |
| 0 | 3105 JVM_END |
| 3106 | |
| 3107 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
| 3108 JVMWrapper("JVM_CurrentThread"); | |
| 3109 oop jthread = thread->threadObj(); | |
| 3110 assert (thread != NULL, "no current thread!"); | |
| 3111 return JNIHandles::make_local(env, jthread); | |
| 3112 JVM_END | |
| 3113 | |
| 3114 | |
| 3115 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
| 3116 JVMWrapper("JVM_CountStackFrames"); | |
| 3117 | |
| 3118 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3119 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3120 bool throw_illegal_thread_state = false; | |
| 3121 int count = 0; | |
| 3122 | |
| 3123 { | |
| 3124 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 3125 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 3126 // acquire of the lock | |
| 3127 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3128 | |
| 3129 if (thr == NULL) { | |
| 3130 // do nothing | |
| 3131 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
| 3132 // Check whether this java thread has been suspended already. If not, throws | |
| 3133 // IllegalThreadStateException. We defer to throw that exception until | |
| 3134 // Threads_lock is released since loading exception class has to leave VM. | |
| 3135 // The correct way to test a thread is actually suspended is | |
| 3136 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
| 3137 // the Threads_lock. The above tests are sufficient for our purposes | |
| 3138 // provided the walkability of the stack is stable - which it isn't | |
| 3139 // 100% but close enough for most practical purposes. | |
| 3140 throw_illegal_thread_state = true; | |
| 3141 } else { | |
| 3142 // Count all java activation, i.e., number of vframes | |
| 3143 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
| 3144 // Native frames are not counted | |
| 3145 if (!vfst.method()->is_native()) count++; | |
| 3146 } | |
| 3147 } | |
| 3148 } | |
| 3149 | |
| 3150 if (throw_illegal_thread_state) { | |
| 3151 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
| 3152 "this thread is not suspended"); | |
| 3153 } | |
| 3154 return count; | |
| 3155 JVM_END | |
| 3156 | |
| 3157 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
| 3158 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
| 3159 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
| 3160 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
| 3161 // outside the critical section. Threads_lock is hot so we want to minimize | |
| 3162 // the hold-time. A cleaner interface would be to decompose interrupt into | |
| 3163 // two steps. The 1st phase, performed under Threads_lock, would return | |
| 3164 // a closure that'd be invoked after Threads_lock was dropped. | |
| 3165 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
| 3166 // admit spurious wakeups. | |
| 3167 | |
| 3168 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
| 3169 JVMWrapper("JVM_Interrupt"); | |
| 3170 | |
| 3171 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3172 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3173 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 3174 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 3175 // acquire of the lock | |
| 3176 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3177 if (thr != NULL) { | |
| 3178 Thread::interrupt(thr); | |
| 3179 } | |
| 3180 JVM_END | |
| 3181 | |
| 3182 | |
| 3183 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
| 3184 JVMWrapper("JVM_IsInterrupted"); | |
| 3185 | |
| 3186 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3187 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3188 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 3189 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 3190 // acquire of the lock | |
| 3191 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3192 if (thr == NULL) { | |
| 3193 return JNI_FALSE; | |
| 3194 } else { | |
| 3195 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
| 3196 } | |
| 3197 JVM_END | |
| 3198 | |
| 3199 | |
| 3200 // Return true iff the current thread has locked the object passed in | |
| 3201 | |
| 3202 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
| 3203 JVMWrapper("JVM_HoldsLock"); | |
| 3204 assert(THREAD->is_Java_thread(), "sanity check"); | |
| 3205 if (obj == NULL) { | |
| 3206 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
| 3207 } | |
| 3208 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
| 3209 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
| 3210 JVM_END | |
| 3211 | |
| 3212 | |
| 3213 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
| 3214 JVMWrapper("JVM_DumpAllStacks"); | |
| 3215 VM_PrintThreads op; | |
| 3216 VMThread::execute(&op); | |
| 3217 if (JvmtiExport::should_post_data_dump()) { | |
| 3218 JvmtiExport::post_data_dump(); | |
| 3219 } | |
| 3220 JVM_END | |
| 3221 | |
| 4006 | 3222 JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name)) |
| 3223 JVMWrapper("JVM_SetNativeThreadName"); | |
| 3224 ResourceMark rm(THREAD); | |
| 3225 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3226 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 3227 // Thread naming only supported for the current thread, doesn't work for | |
| 3228 // target threads. | |
| 3229 if (Thread::current() == thr && !thr->has_attached_via_jni()) { | |
| 3230 // we don't set the name of an attached thread to avoid stepping | |
| 3231 // on other programs | |
| 3232 const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
| 3233 os::set_native_thread_name(thread_name); | |
| 3234 } | |
| 3235 JVM_END | |
| 0 | 3236 |
| 3237 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
| 3238 | |
| 3239 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
| 3240 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
| 3241 if (jthread->privileged_stack_top() == NULL) return false; | |
| 3242 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
| 3243 oop loader = jthread->privileged_stack_top()->class_loader(); | |
| 3244 if (loader == NULL) return true; | |
| 3245 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
| 3246 if (trusted) return true; | |
| 3247 } | |
| 3248 return false; | |
| 3249 } | |
| 3250 | |
| 3251 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
| 3252 JVMWrapper("JVM_CurrentLoadedClass"); | |
| 3253 ResourceMark rm(THREAD); | |
| 3254 | |
| 3255 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3256 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3257 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3258 if (trusted) return NULL; | |
| 3259 | |
|
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|
3260 Method* m = vfst.method(); |
| 0 | 3261 if (!m->is_native()) { |
|
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|
3262 InstanceKlass* holder = m->method_holder(); |
|
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|
3263 oop loader = holder->class_loader(); |
| 0 | 3264 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
|
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|
3265 return (jclass) JNIHandles::make_local(env, holder->java_mirror()); |
| 0 | 3266 } |
| 3267 } | |
| 3268 } | |
| 3269 return NULL; | |
| 3270 JVM_END | |
| 3271 | |
| 3272 | |
| 3273 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
| 3274 JVMWrapper("JVM_CurrentClassLoader"); | |
| 3275 ResourceMark rm(THREAD); | |
| 3276 | |
| 3277 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3278 | |
| 3279 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3280 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3281 if (trusted) return NULL; | |
| 3282 | |
|
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|
3283 Method* m = vfst.method(); |
| 0 | 3284 if (!m->is_native()) { |
|
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|
3285 InstanceKlass* holder = m->method_holder(); |
| 0 | 3286 assert(holder->is_klass(), "just checking"); |
|
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|
3287 oop loader = holder->class_loader(); |
| 0 | 3288 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
| 3289 return JNIHandles::make_local(env, loader); | |
| 3290 } | |
| 3291 } | |
| 3292 } | |
| 3293 return NULL; | |
| 3294 JVM_END | |
| 3295 | |
| 3296 | |
| 3297 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
| 3298 JVMWrapper("JVM_GetClassContext"); | |
| 3299 ResourceMark rm(THREAD); | |
| 3300 JvmtiVMObjectAllocEventCollector oam; | |
|
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|
3301 vframeStream vfst(thread); |
|
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|
3302 |
|
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|
3303 if (SystemDictionary::reflect_CallerSensitive_klass() != NULL) { |
|
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|
3304 // This must only be called from SecurityManager.getClassContext |
|
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|
3305 Method* m = vfst.method(); |
|
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|
3306 if (!(m->method_holder() == SystemDictionary::SecurityManager_klass() && |
|
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|
3307 m->name() == vmSymbols::getClassContext_name() && |
|
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|
3308 m->signature() == vmSymbols::void_class_array_signature())) { |
|
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|
3309 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetClassContext must only be called from SecurityManager.getClassContext"); |
|
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|
3310 } |
|
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|
3311 } |
|
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|
3312 |
|
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|
3313 // Collect method holders |
|
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|
3314 GrowableArray<KlassHandle>* klass_array = new GrowableArray<KlassHandle>(); |
|
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|
3315 for (; !vfst.at_end(); vfst.security_next()) { |
|
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|
3316 Method* m = vfst.method(); |
| 0 | 3317 // Native frames are not returned |
|
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|
3318 if (!m->is_ignored_by_security_stack_walk() && !m->is_native()) { |
|
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changeset
|
3319 Klass* holder = m->method_holder(); |
| 0 | 3320 assert(holder->is_klass(), "just checking"); |
|
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c52abc8a0b08
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diff
changeset
|
3321 klass_array->append(holder); |
| 0 | 3322 } |
| 3323 } | |
| 3324 | |
| 3325 // Create result array of type [Ljava/lang/Class; | |
|
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diff
changeset
|
3326 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), klass_array->length(), CHECK_NULL); |
| 0 | 3327 // Fill in mirrors corresponding to method holders |
|
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diff
changeset
|
3328 for (int i = 0; i < klass_array->length(); i++) { |
|
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diff
changeset
|
3329 result->obj_at_put(i, klass_array->at(i)->java_mirror()); |
| 0 | 3330 } |
| 3331 | |
| 3332 return (jobjectArray) JNIHandles::make_local(env, result); | |
| 3333 JVM_END | |
| 3334 | |
| 3335 | |
| 3336 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
| 3337 JVMWrapper("JVM_ClassDepth"); | |
| 3338 ResourceMark rm(THREAD); | |
| 3339 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 3340 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
| 3341 | |
| 3342 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
|
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diff
changeset
|
3343 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
|
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diff
changeset
|
3344 if (class_name_sym == NULL) { |
| 0 | 3345 return -1; |
| 3346 } | |
| 3347 | |
| 3348 int depth = 0; | |
| 3349 | |
| 3350 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3351 if (!vfst.method()->is_native()) { | |
|
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6831
diff
changeset
|
3352 InstanceKlass* holder = vfst.method()->method_holder(); |
| 0 | 3353 assert(holder->is_klass(), "just checking"); |
|
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diff
changeset
|
3354 if (holder->name() == class_name_sym) { |
| 0 | 3355 return depth; |
| 3356 } | |
| 3357 depth++; | |
| 3358 } | |
| 3359 } | |
| 3360 return -1; | |
| 3361 JVM_END | |
| 3362 | |
| 3363 | |
| 3364 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
| 3365 JVMWrapper("JVM_ClassLoaderDepth"); | |
| 3366 ResourceMark rm(THREAD); | |
| 3367 int depth = 0; | |
| 3368 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3369 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
| 3370 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3371 if (trusted) return -1; | |
| 3372 | |
|
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diff
changeset
|
3373 Method* m = vfst.method(); |
| 0 | 3374 if (!m->is_native()) { |
|
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|
3375 InstanceKlass* holder = m->method_holder(); |
| 0 | 3376 assert(holder->is_klass(), "just checking"); |
|
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|
3377 oop loader = holder->class_loader(); |
| 0 | 3378 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
| 3379 return depth; | |
| 3380 } | |
| 3381 depth++; | |
| 3382 } | |
| 3383 } | |
| 3384 return -1; | |
| 3385 JVM_END | |
| 3386 | |
| 3387 | |
| 3388 // java.lang.Package //////////////////////////////////////////////////////////////// | |
| 3389 | |
| 3390 | |
| 3391 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
| 3392 JVMWrapper("JVM_GetSystemPackage"); | |
| 3393 ResourceMark rm(THREAD); | |
| 3394 JvmtiVMObjectAllocEventCollector oam; | |
| 3395 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
| 3396 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
| 3397 return (jstring) JNIHandles::make_local(result); | |
| 3398 JVM_END | |
| 3399 | |
| 3400 | |
| 3401 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
| 3402 JVMWrapper("JVM_GetSystemPackages"); | |
| 3403 JvmtiVMObjectAllocEventCollector oam; | |
| 3404 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
| 3405 return (jobjectArray) JNIHandles::make_local(result); | |
| 3406 JVM_END | |
| 3407 | |
| 3408 | |
| 3409 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
| 3410 | |
|
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|
3411 bool force_verify_field_access(Klass* current_class, Klass* field_class, AccessFlags access, bool classloader_only) { |
| 0 | 3412 if (current_class == NULL) { |
| 3413 return true; | |
| 3414 } | |
| 3415 if ((current_class == field_class) || access.is_public()) { | |
| 3416 return true; | |
| 3417 } | |
| 3418 | |
| 3419 if (access.is_protected()) { | |
| 3420 // See if current_class is a subclass of field_class | |
| 6983 | 3421 if (current_class->is_subclass_of(field_class)) { |
| 0 | 3422 return true; |
| 3423 } | |
| 3424 } | |
| 3425 | |
|
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|
3426 return (!access.is_private() && InstanceKlass::cast(current_class)->is_same_class_package(field_class)); |
| 0 | 3427 } |
| 3428 | |
| 3429 | |
| 3430 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
| 3431 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
| 3432 JVMWrapper("JVM_AllocateNewObject"); | |
| 3433 JvmtiVMObjectAllocEventCollector oam; | |
| 3434 // Receiver is not used | |
| 3435 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
| 3436 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
| 3437 | |
| 3438 // Cannot instantiate primitive types | |
| 3439 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
| 3440 ResourceMark rm(THREAD); | |
| 3441 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3442 } | |
| 3443 | |
| 3444 // Arrays not allowed here, must use JVM_AllocateNewArray | |
| 6983 | 3445 if (java_lang_Class::as_Klass(curr_mirror)->oop_is_array() || |
| 3446 java_lang_Class::as_Klass(init_mirror)->oop_is_array()) { | |
| 0 | 3447 ResourceMark rm(THREAD); |
| 3448 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3449 } | |
| 3450 | |
|
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diff
changeset
|
3451 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_Klass(curr_mirror)); |
|
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diff
changeset
|
3452 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_Klass(init_mirror)); |
| 0 | 3453 |
| 3454 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
| 3455 | |
| 3456 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
| 3457 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
| 3458 | |
| 3459 // Make sure klass is initialized, since we are about to instantiate one of them. | |
| 3460 curr_klass->initialize(CHECK_NULL); | |
| 3461 | |
| 3462 methodHandle m (THREAD, | |
| 3463 init_klass->find_method(vmSymbols::object_initializer_name(), | |
| 3464 vmSymbols::void_method_signature())); | |
| 3465 if (m.is_null()) { | |
| 3466 ResourceMark rm(THREAD); | |
| 3467 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
| 6983 | 3468 Method::name_and_sig_as_C_string(init_klass(), |
| 0 | 3469 vmSymbols::object_initializer_name(), |
| 3470 vmSymbols::void_method_signature())); | |
| 3471 } | |
| 3472 | |
| 3473 if (curr_klass == init_klass && !m->is_public()) { | |
| 3474 // Calling the constructor for class 'curr_klass'. | |
| 3475 // Only allow calls to a public no-arg constructor. | |
| 3476 // This path corresponds to creating an Externalizable object. | |
| 3477 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3478 } | |
| 3479 | |
| 3480 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
| 3481 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
| 3482 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3483 } | |
| 3484 | |
| 3485 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
| 3486 // Call constructor m. This might call a constructor higher up in the hierachy | |
| 3487 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
| 3488 | |
| 3489 return JNIHandles::make_local(obj()); | |
| 3490 JVM_END | |
| 3491 | |
| 3492 | |
| 3493 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
| 3494 JVMWrapper("JVM_AllocateNewArray"); | |
| 3495 JvmtiVMObjectAllocEventCollector oam; | |
| 3496 oop mirror = JNIHandles::resolve_non_null(currClass); | |
| 3497 | |
| 3498 if (java_lang_Class::is_primitive(mirror)) { | |
| 3499 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3500 } | |
|
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diff
changeset
|
3501 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 3502 oop result; |
| 3503 | |
|
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diff
changeset
|
3504 if (k->oop_is_typeArray()) { |
| 0 | 3505 // typeArray |
|
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
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6725
diff
changeset
|
3506 result = TypeArrayKlass::cast(k)->allocate(length, CHECK_NULL); |
|
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diff
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|
3507 } else if (k->oop_is_objArray()) { |
| 0 | 3508 // objArray |
|
6831
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coleenp
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6725
diff
changeset
|
3509 ObjArrayKlass* oak = ObjArrayKlass::cast(k); |
| 0 | 3510 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) |
| 3511 result = oak->allocate(length, CHECK_NULL); | |
| 3512 } else { | |
| 3513 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3514 } | |
| 3515 return JNIHandles::make_local(env, result); | |
| 3516 JVM_END | |
| 3517 | |
| 3518 | |
| 3519 // Return the first non-null class loader up the execution stack, or null | |
| 3520 // if only code from the null class loader is on the stack. | |
| 3521 | |
| 3522 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
| 3523 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3524 // UseNewReflection | |
| 3525 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
|
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18fb7da42534
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6831
diff
changeset
|
3526 oop loader = vfst.method()->method_holder()->class_loader(); |
| 0 | 3527 if (loader != NULL) { |
| 3528 return JNIHandles::make_local(env, loader); | |
| 3529 } | |
| 3530 } | |
| 3531 return NULL; | |
| 3532 JVM_END | |
| 3533 | |
| 3534 | |
| 3535 // Load a class relative to the most recent class on the stack with a non-null | |
| 3536 // classloader. | |
| 3537 // This function has been deprecated and should not be considered part of the | |
| 3538 // specified JVM interface. | |
| 3539 | |
| 3540 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
| 3541 jclass currClass, jstring currClassName)) | |
| 3542 JVMWrapper("JVM_LoadClass0"); | |
| 3543 // Receiver is not used | |
| 3544 ResourceMark rm(THREAD); | |
| 3545 | |
| 3546 // Class name argument is not guaranteed to be in internal format | |
| 3547 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
| 3548 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
| 3549 | |
| 3550 const char* str = java_lang_String::as_utf8_string(string()); | |
| 3551 | |
|
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2162
diff
changeset
|
3552 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
| 0 | 3553 // It's impossible to create this class; the name cannot fit |
| 3554 // into the constant pool. | |
| 3555 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
| 3556 } | |
| 3557 | |
|
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|
3558 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
| 0 | 3559 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
| 3560 // Find the most recent class on the stack with a non-null classloader | |
| 3561 oop loader = NULL; | |
| 3562 oop protection_domain = NULL; | |
| 3563 if (curr_klass.is_null()) { | |
| 3564 for (vframeStream vfst(thread); | |
| 3565 !vfst.at_end() && loader == NULL; | |
| 3566 vfst.next()) { | |
| 3567 if (!vfst.method()->is_native()) { | |
|
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6831
diff
changeset
|
3568 InstanceKlass* holder = vfst.method()->method_holder(); |
|
18fb7da42534
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6831
diff
changeset
|
3569 loader = holder->class_loader(); |
|
18fb7da42534
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6831
diff
changeset
|
3570 protection_domain = holder->protection_domain(); |
| 0 | 3571 } |
| 3572 } | |
| 3573 } else { | |
|
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diff
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|
3574 Klass* curr_klass_oop = java_lang_Class::as_Klass(curr_klass()); |
|
da91efe96a93
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diff
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|
3575 loader = InstanceKlass::cast(curr_klass_oop)->class_loader(); |
|
da91efe96a93
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diff
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|
3576 protection_domain = InstanceKlass::cast(curr_klass_oop)->protection_domain(); |
| 0 | 3577 } |
| 3578 Handle h_loader(THREAD, loader); | |
| 3579 Handle h_prot (THREAD, protection_domain); | |
|
657
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diff
changeset
|
3580 jclass result = find_class_from_class_loader(env, name, true, h_loader, h_prot, |
|
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579
diff
changeset
|
3581 false, thread); |
|
715dceaa89b7
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579
diff
changeset
|
3582 if (TraceClassResolution && result != NULL) { |
|
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changeset
|
3583 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
|
657
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diff
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|
3584 } |
|
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|
3585 return result; |
| 0 | 3586 JVM_END |
| 3587 | |
| 3588 | |
| 3589 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
| 3590 | |
| 3591 | |
| 3592 // resolve array handle and check arguments | |
| 3593 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
| 3594 if (arr == NULL) { | |
| 3595 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 3596 } | |
| 3597 oop a = JNIHandles::resolve_non_null(arr); | |
|
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|
3598 if (!a->is_array() || (type_array_only && !a->is_typeArray())) { |
| 0 | 3599 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); |
| 3600 } | |
| 3601 return arrayOop(a); | |
| 3602 } | |
| 3603 | |
| 3604 | |
| 3605 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
| 3606 JVMWrapper("JVM_GetArrayLength"); | |
| 3607 arrayOop a = check_array(env, arr, false, CHECK_0); | |
| 3608 return a->length(); | |
| 3609 JVM_END | |
| 3610 | |
| 3611 | |
| 3612 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
| 3613 JVMWrapper("JVM_Array_Get"); | |
| 3614 JvmtiVMObjectAllocEventCollector oam; | |
| 3615 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
| 3616 jvalue value; | |
| 3617 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
| 3618 oop box = Reflection::box(&value, type, CHECK_NULL); | |
| 3619 return JNIHandles::make_local(env, box); | |
| 3620 JVM_END | |
| 3621 | |
| 3622 | |
| 3623 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
| 3624 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
| 3625 jvalue value; | |
| 3626 value.i = 0; // to initialize value before getting used in CHECK | |
| 3627 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
| 3628 assert(a->is_typeArray(), "just checking"); | |
| 3629 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
| 3630 BasicType wide_type = (BasicType) wCode; | |
| 3631 if (type != wide_type) { | |
| 3632 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
| 3633 } | |
| 3634 return value; | |
| 3635 JVM_END | |
| 3636 | |
| 3637 | |
| 3638 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
| 3639 JVMWrapper("JVM_SetArrayElement"); | |
| 3640 arrayOop a = check_array(env, arr, false, CHECK); | |
| 3641 oop box = JNIHandles::resolve(val); | |
| 3642 jvalue value; | |
| 3643 value.i = 0; // to initialize value before getting used in CHECK | |
| 3644 BasicType value_type; | |
| 3645 if (a->is_objArray()) { | |
| 3646 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
| 3647 value_type = Reflection::unbox_for_regular_object(box, &value); | |
| 3648 } else { | |
| 3649 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
| 3650 } | |
| 3651 Reflection::array_set(&value, a, index, value_type, CHECK); | |
| 3652 JVM_END | |
| 3653 | |
| 3654 | |
| 3655 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
| 3656 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
| 3657 arrayOop a = check_array(env, arr, true, CHECK); | |
| 3658 assert(a->is_typeArray(), "just checking"); | |
| 3659 BasicType value_type = (BasicType) vCode; | |
| 3660 Reflection::array_set(&v, a, index, value_type, CHECK); | |
| 3661 JVM_END | |
| 3662 | |
| 3663 | |
| 3664 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
| 3665 JVMWrapper("JVM_NewArray"); | |
| 3666 JvmtiVMObjectAllocEventCollector oam; | |
| 3667 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3668 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
| 3669 return JNIHandles::make_local(env, result); | |
| 3670 JVM_END | |
| 3671 | |
| 3672 | |
| 3673 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
| 3674 JVMWrapper("JVM_NewMultiArray"); | |
| 3675 JvmtiVMObjectAllocEventCollector oam; | |
| 3676 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
| 3677 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3678 assert(dim_array->is_typeArray(), "just checking"); | |
| 3679 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
| 3680 return JNIHandles::make_local(env, result); | |
| 3681 JVM_END | |
| 3682 | |
| 3683 | |
| 3684 // Networking library support //////////////////////////////////////////////////////////////////// | |
| 3685 | |
| 3686 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
| 3687 JVMWrapper("JVM_InitializeSocketLibrary"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3688 return 0; |
| 0 | 3689 JVM_END |
| 3690 | |
| 3691 | |
| 3692 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
| 3693 JVMWrapper("JVM_Socket"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3694 return os::socket(domain, type, protocol); |
| 0 | 3695 JVM_END |
| 3696 | |
| 3697 | |
| 3698 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
| 3699 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
| 3700 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3701 return os::socket_close(fd); |
| 0 | 3702 JVM_END |
| 3703 | |
| 3704 | |
| 3705 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
| 3706 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
| 3707 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3708 return os::socket_shutdown(fd, howto); |
| 0 | 3709 JVM_END |
| 3710 | |
| 3711 | |
| 3712 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3713 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
| 3714 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3715 return os::recv(fd, buf, (size_t)nBytes, (uint)flags); |
| 0 | 3716 JVM_END |
| 3717 | |
| 3718 | |
| 3719 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3720 JVMWrapper2("JVM_Send (0x%x)", fd); | |
| 3721 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3722 return os::send(fd, buf, (size_t)nBytes, (uint)flags); |
| 0 | 3723 JVM_END |
| 3724 | |
| 3725 | |
| 3726 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
| 3727 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
| 3728 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3729 return os::timeout(fd, timeout); |
| 0 | 3730 JVM_END |
| 3731 | |
| 3732 | |
| 3733 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
| 3734 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
| 3735 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3736 return os::listen(fd, count); |
| 0 | 3737 JVM_END |
| 3738 | |
| 3739 | |
| 3740 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
| 3741 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
| 3742 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3743 return os::connect(fd, him, (socklen_t)len); |
| 0 | 3744 JVM_END |
| 3745 | |
| 3746 | |
| 3747 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
| 3748 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
| 3749 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3750 return os::bind(fd, him, (socklen_t)len); |
| 0 | 3751 JVM_END |
| 3752 | |
| 3753 | |
| 3754 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
| 3755 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
| 3756 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3757 socklen_t socklen = (socklen_t)(*len); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3758 jint result = os::accept(fd, him, &socklen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3759 *len = (jint)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3760 return result; |
| 0 | 3761 JVM_END |
| 3762 | |
| 3763 | |
| 3764 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
| 3765 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
| 3766 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3767 socklen_t socklen = (socklen_t)(*fromlen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3768 jint result = os::recvfrom(fd, buf, (size_t)nBytes, (uint)flags, from, &socklen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3769 *fromlen = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3770 return result; |
| 0 | 3771 JVM_END |
| 3772 | |
| 3773 | |
| 3774 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
| 3775 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
| 3776 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3777 socklen_t socklen = (socklen_t)(*len); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3778 jint result = os::get_sock_name(fd, him, &socklen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3779 *len = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3780 return result; |
| 0 | 3781 JVM_END |
| 3782 | |
| 3783 | |
| 3784 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
| 3785 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
| 3786 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3787 return os::sendto(fd, buf, (size_t)len, (uint)flags, to, (socklen_t)tolen); |
| 0 | 3788 JVM_END |
| 3789 | |
| 3790 | |
| 3791 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
| 3792 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
| 3793 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3794 return os::socket_available(fd, pbytes); |
| 0 | 3795 JVM_END |
| 3796 | |
| 3797 | |
| 3798 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
| 3799 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
| 3800 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3801 socklen_t socklen = (socklen_t)(*optlen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3802 jint result = os::get_sock_opt(fd, level, optname, optval, &socklen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3803 *optlen = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3804 return result; |
| 0 | 3805 JVM_END |
| 3806 | |
| 3807 | |
| 3808 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
| 3809 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
| 3810 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3811 return os::set_sock_opt(fd, level, optname, optval, (socklen_t)optlen); |
| 0 | 3812 JVM_END |
| 3813 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3814 |
| 0 | 3815 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) |
| 3816 JVMWrapper("JVM_GetHostName"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3817 return os::get_host_name(name, namelen); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3818 JVM_END |
| 0 | 3819 |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3820 |
| 0 | 3821 // Library support /////////////////////////////////////////////////////////////////////////// |
| 3822 | |
| 3823 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
| 3824 //%note jvm_ct | |
| 3825 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
| 3826 char ebuf[1024]; | |
| 3827 void *load_result; | |
| 3828 { | |
| 3829 ThreadToNativeFromVM ttnfvm(thread); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3830 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
| 0 | 3831 } |
| 3832 if (load_result == NULL) { | |
| 3833 char msg[1024]; | |
| 3834 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
| 3835 // Since 'ebuf' may contain a string encoded using | |
| 3836 // platform encoding scheme, we need to pass | |
| 3837 // Exceptions::unsafe_to_utf8 to the new_exception method | |
| 3838 // as the last argument. See bug 6367357. | |
| 3839 Handle h_exception = | |
| 3840 Exceptions::new_exception(thread, | |
| 3841 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
| 3842 msg, Exceptions::unsafe_to_utf8); | |
| 3843 | |
| 3844 THROW_HANDLE_0(h_exception); | |
| 3845 } | |
| 3846 return load_result; | |
| 3847 JVM_END | |
| 3848 | |
| 3849 | |
| 3850 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
| 3851 JVMWrapper("JVM_UnloadLibrary"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3852 os::dll_unload(handle); |
| 0 | 3853 JVM_END |
| 3854 | |
| 3855 | |
| 3856 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
| 3857 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3858 return os::dll_lookup(handle, name); |
| 0 | 3859 JVM_END |
| 3860 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3861 |
| 0 | 3862 // Floating point support //////////////////////////////////////////////////////////////////// |
| 3863 | |
| 3864 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
| 3865 JVMWrapper("JVM_IsNaN"); | |
| 3866 return g_isnan(a); | |
| 3867 JVM_END | |
| 3868 | |
| 3869 | |
| 3870 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
| 3871 | |
| 3872 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
| 3873 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
| 3874 return Threads::is_supported_jni_version_including_1_1(version); | |
| 3875 JVM_END | |
| 3876 | |
| 3877 | |
| 3878 // String support /////////////////////////////////////////////////////////////////////////// | |
| 3879 | |
| 3880 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
| 3881 JVMWrapper("JVM_InternString"); | |
| 3882 JvmtiVMObjectAllocEventCollector oam; | |
| 3883 if (str == NULL) return NULL; | |
| 3884 oop string = JNIHandles::resolve_non_null(str); | |
| 3885 oop result = StringTable::intern(string, CHECK_NULL); | |
| 3886 return (jstring) JNIHandles::make_local(env, result); | |
| 3887 JVM_END | |
| 3888 | |
| 3889 | |
| 3890 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
| 3891 | |
| 3892 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
| 3893 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
| 3894 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
| 3895 // that only works with java threads. | |
| 3896 | |
| 3897 | |
| 3898 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
| 3899 VM_Exit::block_if_vm_exited(); | |
| 3900 JVMWrapper("JVM_RawMonitorCreate"); | |
| 3901 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
| 3902 } | |
| 3903 | |
| 3904 | |
| 3905 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
| 3906 VM_Exit::block_if_vm_exited(); | |
| 3907 JVMWrapper("JVM_RawMonitorDestroy"); | |
| 3908 delete ((Mutex*) mon); | |
| 3909 } | |
| 3910 | |
| 3911 | |
| 3912 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
| 3913 VM_Exit::block_if_vm_exited(); | |
| 3914 JVMWrapper("JVM_RawMonitorEnter"); | |
| 3915 ((Mutex*) mon)->jvm_raw_lock(); | |
| 3916 return 0; | |
| 3917 } | |
| 3918 | |
| 3919 | |
| 3920 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
| 3921 VM_Exit::block_if_vm_exited(); | |
| 3922 JVMWrapper("JVM_RawMonitorExit"); | |
| 3923 ((Mutex*) mon)->jvm_raw_unlock(); | |
| 3924 } | |
| 3925 | |
| 3926 | |
| 3927 // Support for Serialization | |
| 3928 | |
| 3929 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
| 3930 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
| 3931 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
| 3932 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
| 3933 | |
| 3934 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
| 3935 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
| 3936 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
| 3937 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
| 3938 | |
| 3939 | |
| 3940 void initialize_converter_functions() { | |
| 3941 if (JDK_Version::is_gte_jdk14x_version()) { | |
| 3942 // These functions only exist for compatibility with 1.3.1 and earlier | |
| 3943 return; | |
| 3944 } | |
| 3945 | |
| 3946 // called from universe_post_init() | |
| 3947 assert( | |
| 3948 int_bits_to_float_fn == NULL && | |
| 3949 long_bits_to_double_fn == NULL && | |
| 3950 float_to_int_bits_fn == NULL && | |
| 3951 double_to_long_bits_fn == NULL , | |
| 3952 "initialization done twice" | |
| 3953 ); | |
| 3954 // initialize | |
| 3955 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
| 3956 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
| 3957 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
| 3958 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
| 3959 // verify | |
| 3960 assert( | |
| 3961 int_bits_to_float_fn != NULL && | |
| 3962 long_bits_to_double_fn != NULL && | |
| 3963 float_to_int_bits_fn != NULL && | |
| 3964 double_to_long_bits_fn != NULL , | |
| 3965 "initialization failed" | |
| 3966 ); | |
| 3967 } | |
| 3968 | |
| 3969 | |
| 3970 // Serialization | |
| 3971 JVM_ENTRY(void, JVM_SetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
| 3972 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
| 3973 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
| 3974 | |
| 3975 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
| 3976 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
| 3977 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
| 3978 oop o = JNIHandles::resolve(obj); | |
| 3979 | |
| 3980 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
| 3981 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 3982 } | |
| 3983 | |
| 3984 jsize nfids = fids->length(); | |
| 3985 if (nfids == 0) return; | |
| 3986 | |
| 3987 if (tcodes->length() < nfids) { | |
| 3988 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
| 3989 } | |
| 3990 | |
| 3991 jsize off = 0; | |
| 3992 /* loop through fields, setting values */ | |
| 3993 for (jsize i = 0; i < nfids; i++) { | |
| 3994 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
| 3995 int field_offset; | |
| 3996 if (fid != NULL) { | |
| 3997 // NULL is a legal value for fid, but retrieving the field offset | |
| 3998 // trigger assertion in that case | |
| 3999 field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 4000 } | |
| 4001 | |
| 4002 switch (tcodes->char_at(i)) { | |
| 4003 case 'Z': | |
| 4004 if (fid != NULL) { | |
| 4005 jboolean val = (dbuf->byte_at(off) != 0) ? JNI_TRUE : JNI_FALSE; | |
| 4006 o->bool_field_put(field_offset, val); | |
| 4007 } | |
| 4008 off++; | |
| 4009 break; | |
| 4010 | |
| 4011 case 'B': | |
| 4012 if (fid != NULL) { | |
| 4013 o->byte_field_put(field_offset, dbuf->byte_at(off)); | |
| 4014 } | |
| 4015 off++; | |
| 4016 break; | |
| 4017 | |
| 4018 case 'C': | |
| 4019 if (fid != NULL) { | |
| 4020 jchar val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
| 4021 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
| 4022 o->char_field_put(field_offset, val); | |
| 4023 } | |
| 4024 off += 2; | |
| 4025 break; | |
| 4026 | |
| 4027 case 'S': | |
| 4028 if (fid != NULL) { | |
| 4029 jshort val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
| 4030 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
| 4031 o->short_field_put(field_offset, val); | |
| 4032 } | |
| 4033 off += 2; | |
| 4034 break; | |
| 4035 | |
| 4036 case 'I': | |
| 4037 if (fid != NULL) { | |
| 4038 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
| 4039 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
| 4040 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
| 4041 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
| 4042 o->int_field_put(field_offset, ival); | |
| 4043 } | |
| 4044 off += 4; | |
| 4045 break; | |
| 4046 | |
| 4047 case 'F': | |
| 4048 if (fid != NULL) { | |
| 4049 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
| 4050 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
| 4051 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
| 4052 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
| 4053 jfloat fval = (*int_bits_to_float_fn)(env, NULL, ival); | |
| 4054 o->float_field_put(field_offset, fval); | |
| 4055 } | |
| 4056 off += 4; | |
| 4057 break; | |
| 4058 | |
| 4059 case 'J': | |
| 4060 if (fid != NULL) { | |
| 4061 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
| 4062 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
| 4063 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
| 4064 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
| 4065 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
| 4066 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
| 4067 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
| 4068 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
| 4069 o->long_field_put(field_offset, lval); | |
| 4070 } | |
| 4071 off += 8; | |
| 4072 break; | |
| 4073 | |
| 4074 case 'D': | |
| 4075 if (fid != NULL) { | |
| 4076 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
| 4077 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
| 4078 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
| 4079 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
| 4080 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
| 4081 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
| 4082 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
| 4083 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
| 4084 jdouble dval = (*long_bits_to_double_fn)(env, NULL, lval); | |
| 4085 o->double_field_put(field_offset, dval); | |
| 4086 } | |
| 4087 off += 8; | |
| 4088 break; | |
| 4089 | |
| 4090 default: | |
| 4091 // Illegal typecode | |
| 4092 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
| 4093 } | |
| 4094 } | |
| 4095 JVM_END | |
| 4096 | |
| 4097 | |
| 4098 JVM_ENTRY(void, JVM_GetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
| 4099 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
| 4100 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
| 4101 | |
| 4102 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
| 4103 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
| 4104 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
| 4105 oop o = JNIHandles::resolve(obj); | |
| 4106 | |
| 4107 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
| 4108 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 4109 } | |
| 4110 | |
| 4111 jsize nfids = fids->length(); | |
| 4112 if (nfids == 0) return; | |
| 4113 | |
| 4114 if (tcodes->length() < nfids) { | |
| 4115 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
| 4116 } | |
| 4117 | |
| 4118 /* loop through fields, fetching values */ | |
| 4119 jsize off = 0; | |
| 4120 for (jsize i = 0; i < nfids; i++) { | |
| 4121 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
| 4122 if (fid == NULL) { | |
| 4123 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 4124 } | |
| 4125 int field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 4126 | |
| 4127 switch (tcodes->char_at(i)) { | |
| 4128 case 'Z': | |
| 4129 { | |
| 4130 jboolean val = o->bool_field(field_offset); | |
| 4131 dbuf->byte_at_put(off++, (val != 0) ? 1 : 0); | |
| 4132 } | |
| 4133 break; | |
| 4134 | |
| 4135 case 'B': | |
| 4136 dbuf->byte_at_put(off++, o->byte_field(field_offset)); | |
| 4137 break; | |
| 4138 | |
| 4139 case 'C': | |
| 4140 { | |
| 4141 jchar val = o->char_field(field_offset); | |
| 4142 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 4143 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 4144 } | |
| 4145 break; | |
| 4146 | |
| 4147 case 'S': | |
| 4148 { | |
| 4149 jshort val = o->short_field(field_offset); | |
| 4150 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 4151 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 4152 } | |
| 4153 break; | |
| 4154 | |
| 4155 case 'I': | |
| 4156 { | |
| 4157 jint val = o->int_field(field_offset); | |
| 4158 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
| 4159 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
| 4160 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 4161 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 4162 } | |
| 4163 break; | |
| 4164 | |
| 4165 case 'F': | |
| 4166 { | |
| 4167 jfloat fval = o->float_field(field_offset); | |
| 4168 jint ival = (*float_to_int_bits_fn)(env, NULL, fval); | |
| 4169 dbuf->byte_at_put(off++, (ival >> 24) & 0xFF); | |
| 4170 dbuf->byte_at_put(off++, (ival >> 16) & 0xFF); | |
| 4171 dbuf->byte_at_put(off++, (ival >> 8) & 0xFF); | |
| 4172 dbuf->byte_at_put(off++, (ival >> 0) & 0xFF); | |
| 4173 } | |
| 4174 break; | |
| 4175 | |
| 4176 case 'J': | |
| 4177 { | |
| 4178 jlong val = o->long_field(field_offset); | |
| 4179 dbuf->byte_at_put(off++, (val >> 56) & 0xFF); | |
| 4180 dbuf->byte_at_put(off++, (val >> 48) & 0xFF); | |
| 4181 dbuf->byte_at_put(off++, (val >> 40) & 0xFF); | |
| 4182 dbuf->byte_at_put(off++, (val >> 32) & 0xFF); | |
| 4183 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
| 4184 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
| 4185 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 4186 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 4187 } | |
| 4188 break; | |
| 4189 | |
| 4190 case 'D': | |
| 4191 { | |
| 4192 jdouble dval = o->double_field(field_offset); | |
| 4193 jlong lval = (*double_to_long_bits_fn)(env, NULL, dval); | |
| 4194 dbuf->byte_at_put(off++, (lval >> 56) & 0xFF); | |
| 4195 dbuf->byte_at_put(off++, (lval >> 48) & 0xFF); | |
| 4196 dbuf->byte_at_put(off++, (lval >> 40) & 0xFF); | |
| 4197 dbuf->byte_at_put(off++, (lval >> 32) & 0xFF); | |
| 4198 dbuf->byte_at_put(off++, (lval >> 24) & 0xFF); | |
| 4199 dbuf->byte_at_put(off++, (lval >> 16) & 0xFF); | |
| 4200 dbuf->byte_at_put(off++, (lval >> 8) & 0xFF); | |
| 4201 dbuf->byte_at_put(off++, (lval >> 0) & 0xFF); | |
| 4202 } | |
| 4203 break; | |
| 4204 | |
| 4205 default: | |
| 4206 // Illegal typecode | |
| 4207 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
| 4208 } | |
| 4209 } | |
| 4210 JVM_END | |
| 4211 | |
| 4212 | |
| 4213 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
| 4214 | |
|
2177
3582bf76420e
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2162
diff
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|
4215 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS) { |
| 0 | 4216 // Security Note: |
| 4217 // The Java level wrapper will perform the necessary security check allowing | |
| 4218 // us to pass the NULL as the initiating class loader. | |
|
6725
da91efe96a93
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coleenp
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6271
diff
changeset
|
4219 Klass* klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); |
|
878
abe076e3636f
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mchung
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875
diff
changeset
|
4220 |
| 0 | 4221 KlassHandle klass_handle(THREAD, klass); |
| 4222 // Check if we should initialize the class | |
| 4223 if (init && klass_handle->oop_is_instance()) { | |
| 4224 klass_handle->initialize(CHECK_NULL); | |
| 4225 } | |
| 4226 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
| 4227 } | |
| 4228 | |
| 4229 | |
| 4230 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
| 4231 | |
| 4232 #ifndef PRODUCT | |
| 4233 | |
| 4234 extern "C" { | |
| 4235 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
| 4236 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
| 4237 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
| 4238 } | |
| 4239 | |
| 4240 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
| 4241 JVMWrapper("JVM_AccessBoolVMFlag"); | |
|
12322
72b7e96c1922
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twisti
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12264
diff
changeset
|
4242 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, Flag::INTERNAL); |
| 0 | 4243 JVM_END |
| 4244 | |
| 4245 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
| 4246 JVMWrapper("JVM_AccessVMIntFlag"); | |
| 4247 intx v; | |
|
12322
72b7e96c1922
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12264
diff
changeset
|
4248 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, Flag::INTERNAL); |
| 0 | 4249 *value = (jint)v; |
| 4250 return result; | |
| 4251 JVM_END | |
| 4252 | |
| 4253 | |
| 4254 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
| 4255 JVMWrapper("JVM_VMBreakPoint"); | |
| 4256 oop the_obj = JNIHandles::resolve(obj); | |
| 4257 BREAKPOINT; | |
| 4258 JVM_END | |
| 4259 | |
| 4260 | |
| 4261 #endif | |
| 4262 | |
| 4263 | |
| 4264 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4265 | |
| 4266 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
| 4267 JVMWrapper("JVM_InvokeMethod"); | |
| 4268 Handle method_handle; | |
| 4269 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
| 4270 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
| 4271 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
| 4272 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4273 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
| 4274 jobject res = JNIHandles::make_local(env, result); | |
| 4275 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4276 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
| 4277 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
| 4278 if (java_lang_Class::is_primitive(ret_type)) { | |
| 4279 // Only for primitive type vm allocates memory for java object. | |
| 4280 // See box() method. | |
| 4281 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4282 } | |
| 4283 } | |
| 4284 return res; | |
| 4285 } else { | |
| 4286 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
| 4287 } | |
| 4288 JVM_END | |
| 4289 | |
| 4290 | |
| 4291 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
| 4292 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
| 4293 oop constructor_mirror = JNIHandles::resolve(c); | |
| 4294 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4295 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
| 4296 jobject res = JNIHandles::make_local(env, result); | |
| 4297 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4298 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4299 } | |
| 4300 return res; | |
| 4301 JVM_END | |
| 4302 | |
| 4303 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4304 | |
| 4305 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
| 4306 JVMWrapper("JVM_SupportsCX8"); | |
| 4307 return VM_Version::supports_cx8(); | |
| 4308 JVM_END | |
| 4309 | |
| 4310 | |
| 4311 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
| 4312 JVMWrapper("JVM_CX8Field"); | |
| 4313 jlong res; | |
| 4314 oop o = JNIHandles::resolve(obj); | |
| 4315 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 4316 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
| 4317 | |
| 4318 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
| 4319 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
| 4320 | |
| 4321 return res == oldVal; | |
| 4322 JVM_END | |
| 4323 | |
|
116
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|
4324 // DTrace /////////////////////////////////////////////////////////////////// |
|
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diff
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|
4325 |
|
018d5b58dd4f
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0
diff
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|
4326 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
|
018d5b58dd4f
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0
diff
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|
4327 JVMWrapper("JVM_DTraceGetVersion"); |
|
018d5b58dd4f
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0
diff
changeset
|
4328 return (jint)JVM_TRACING_DTRACE_VERSION; |
|
018d5b58dd4f
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kamg
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0
diff
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|
4329 JVM_END |
|
018d5b58dd4f
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0
diff
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|
4330 |
|
018d5b58dd4f
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diff
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|
4331 JVM_ENTRY(jlong,JVM_DTraceActivate( |
|
018d5b58dd4f
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0
diff
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|
4332 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
|
018d5b58dd4f
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diff
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|
4333 JVM_DTraceProvider* providers)) |
|
018d5b58dd4f
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0
diff
changeset
|
4334 JVMWrapper("JVM_DTraceActivate"); |
|
018d5b58dd4f
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diff
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|
4335 return DTraceJSDT::activate( |
|
018d5b58dd4f
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0
diff
changeset
|
4336 version, module_name, providers_count, providers, CHECK_0); |
|
018d5b58dd4f
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diff
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|
4337 JVM_END |
|
018d5b58dd4f
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diff
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|
4338 |
|
018d5b58dd4f
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diff
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|
4339 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
|
018d5b58dd4f
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diff
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|
4340 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
|
018d5b58dd4f
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diff
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|
4341 return DTraceJSDT::is_probe_enabled(method); |
|
018d5b58dd4f
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diff
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|
4342 JVM_END |
|
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diff
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|
4343 |
|
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diff
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|
4344 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
|
018d5b58dd4f
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diff
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|
4345 JVMWrapper("JVM_DTraceDispose"); |
|
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diff
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|
4346 DTraceJSDT::dispose(handle); |
|
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diff
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|
4347 JVM_END |
|
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diff
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|
4348 |
|
018d5b58dd4f
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diff
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|
4349 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
|
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|
4350 JVMWrapper("JVM_DTraceIsSupported"); |
|
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|
4351 return DTraceJSDT::is_supported(); |
|
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diff
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|
4352 JVM_END |
|
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|
4353 |
| 0 | 4354 // Returns an array of all live Thread objects (VM internal JavaThreads, |
| 4355 // jvmti agent threads, and JNI attaching threads are skipped) | |
| 4356 // See CR 6404306 regarding JNI attaching threads | |
| 4357 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
| 4358 ResourceMark rm(THREAD); | |
| 4359 ThreadsListEnumerator tle(THREAD, false, false); | |
| 4360 JvmtiVMObjectAllocEventCollector oam; | |
| 4361 | |
| 4362 int num_threads = tle.num_threads(); | |
| 1142 | 4363 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
| 0 | 4364 objArrayHandle threads_ah(THREAD, r); |
| 4365 | |
| 4366 for (int i = 0; i < num_threads; i++) { | |
| 4367 Handle h = tle.get_threadObj(i); | |
| 4368 threads_ah->obj_at_put(i, h()); | |
| 4369 } | |
| 4370 | |
| 4371 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
| 4372 JVM_END | |
| 4373 | |
| 4374 | |
| 4375 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
| 4376 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
| 4377 // the corresponding entry in the given threads array | |
| 4378 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
| 4379 JVMWrapper("JVM_DumpThreads"); | |
| 4380 JvmtiVMObjectAllocEventCollector oam; | |
| 4381 | |
| 4382 // Check if threads is null | |
| 4383 if (threads == NULL) { | |
| 4384 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4385 } | |
| 4386 | |
| 4387 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
| 4388 objArrayHandle ah(THREAD, a); | |
| 4389 int num_threads = ah->length(); | |
| 4390 // check if threads is non-empty array | |
| 4391 if (num_threads == 0) { | |
| 4392 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
| 4393 } | |
| 4394 | |
| 4395 // check if threads is not an array of objects of Thread class | |
|
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|
4396 Klass* k = ObjArrayKlass::cast(ah->klass())->element_klass(); |
| 1142 | 4397 if (k != SystemDictionary::Thread_klass()) { |
| 0 | 4398 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
| 4399 } | |
| 4400 | |
| 4401 ResourceMark rm(THREAD); | |
| 4402 | |
| 4403 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
| 4404 for (int i = 0; i < num_threads; i++) { | |
| 4405 oop thread_obj = ah->obj_at(i); | |
| 4406 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
| 4407 thread_handle_array->append(h); | |
| 4408 } | |
| 4409 | |
| 4410 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
| 4411 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
| 4412 | |
| 4413 JVM_END | |
| 4414 | |
| 4415 // JVM monitoring and management support | |
| 4416 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
| 4417 return Management::get_jmm_interface(version); | |
| 4418 JVM_END | |
| 4419 | |
| 4420 // com.sun.tools.attach.VirtualMachine agent properties support | |
| 4421 // | |
| 4422 // Initialize the agent properties with the properties maintained in the VM | |
| 4423 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
| 4424 JVMWrapper("JVM_InitAgentProperties"); | |
| 4425 ResourceMark rm; | |
| 4426 | |
| 4427 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
| 4428 | |
| 4429 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
| 4430 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
| 4431 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
| 4432 return properties; | |
| 4433 JVM_END | |
| 4434 | |
| 4435 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
| 4436 { | |
| 4437 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
| 4438 JvmtiVMObjectAllocEventCollector oam; | |
| 4439 | |
| 4440 if (ofClass == NULL) { | |
| 4441 return NULL; | |
| 4442 } | |
| 4443 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
| 4444 // Special handling for primitive objects | |
| 4445 if (java_lang_Class::is_primitive(mirror())) { | |
| 4446 return NULL; | |
| 4447 } | |
|
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|
4448 Klass* k = java_lang_Class::as_Klass(mirror()); |
| 6983 | 4449 if (!k->oop_is_instance()) { |
| 0 | 4450 return NULL; |
| 4451 } | |
| 4452 instanceKlassHandle ik_h(THREAD, k); | |
| 4453 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
| 4454 if (encl_method_class_idx == 0) { | |
| 4455 return NULL; | |
| 4456 } | |
| 1142 | 4457 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
| 0 | 4458 objArrayHandle dest(THREAD, dest_o); |
|
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|
4459 Klass* enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); |
| 6983 | 4460 dest->obj_at_put(0, enc_k->java_mirror()); |
| 0 | 4461 int encl_method_method_idx = ik_h->enclosing_method_method_index(); |
| 4462 if (encl_method_method_idx != 0) { | |
|
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|
4463 Symbol* sym = ik_h->constants()->symbol_at( |
| 0 | 4464 extract_low_short_from_int( |
| 4465 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4466 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4467 dest->obj_at_put(1, str()); | |
|
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|
4468 sym = ik_h->constants()->symbol_at( |
| 0 | 4469 extract_high_short_from_int( |
| 4470 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4471 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4472 dest->obj_at_put(2, str()); | |
| 4473 } | |
| 4474 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 4475 } | |
| 4476 JVM_END | |
| 4477 | |
| 4478 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
| 4479 jint javaThreadState)) | |
| 4480 { | |
| 4481 // If new thread states are added in future JDK and VM versions, | |
| 4482 // this should check if the JDK version is compatible with thread | |
| 4483 // states supported by the VM. Return NULL if not compatible. | |
| 4484 // | |
| 4485 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4486 // to the Java thread state that the JDK supports. | |
| 4487 // | |
| 4488 | |
| 4489 typeArrayHandle values_h; | |
| 4490 switch (javaThreadState) { | |
| 4491 case JAVA_THREAD_STATE_NEW : { | |
| 4492 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4493 values_h = typeArrayHandle(THREAD, r); | |
| 4494 values_h->int_at_put(0, java_lang_Thread::NEW); | |
| 4495 break; | |
| 4496 } | |
| 4497 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4498 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4499 values_h = typeArrayHandle(THREAD, r); | |
| 4500 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
| 4501 break; | |
| 4502 } | |
| 4503 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4504 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4505 values_h = typeArrayHandle(THREAD, r); | |
| 4506 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
| 4507 break; | |
| 4508 } | |
| 4509 case JAVA_THREAD_STATE_WAITING : { | |
| 4510 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
| 4511 values_h = typeArrayHandle(THREAD, r); | |
| 4512 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
| 4513 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
| 4514 break; | |
| 4515 } | |
| 4516 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4517 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
| 4518 values_h = typeArrayHandle(THREAD, r); | |
| 4519 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
| 4520 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
| 4521 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
| 4522 break; | |
| 4523 } | |
| 4524 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4525 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4526 values_h = typeArrayHandle(THREAD, r); | |
| 4527 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
| 4528 break; | |
| 4529 } | |
| 4530 default: | |
| 4531 // Unknown state - probably incompatible JDK version | |
| 4532 return NULL; | |
| 4533 } | |
| 4534 | |
| 4535 return (jintArray) JNIHandles::make_local(env, values_h()); | |
| 4536 } | |
| 4537 JVM_END | |
| 4538 | |
| 4539 | |
| 4540 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
| 4541 jint javaThreadState, | |
| 4542 jintArray values)) | |
| 4543 { | |
| 4544 // If new thread states are added in future JDK and VM versions, | |
| 4545 // this should check if the JDK version is compatible with thread | |
| 4546 // states supported by the VM. Return NULL if not compatible. | |
| 4547 // | |
| 4548 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4549 // to the Java thread state that the JDK supports. | |
| 4550 // | |
| 4551 | |
| 4552 ResourceMark rm; | |
| 4553 | |
| 4554 // Check if threads is null | |
| 4555 if (values == NULL) { | |
| 4556 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4557 } | |
| 4558 | |
| 4559 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
| 4560 typeArrayHandle values_h(THREAD, v); | |
| 4561 | |
| 4562 objArrayHandle names_h; | |
| 4563 switch (javaThreadState) { | |
| 4564 case JAVA_THREAD_STATE_NEW : { | |
| 4565 assert(values_h->length() == 1 && | |
| 4566 values_h->int_at(0) == java_lang_Thread::NEW, | |
| 4567 "Invalid threadStatus value"); | |
| 4568 | |
| 1142 | 4569 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4570 1, /* only 1 substate */ |
| 4571 CHECK_NULL); | |
| 4572 names_h = objArrayHandle(THREAD, r); | |
| 4573 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
| 4574 names_h->obj_at_put(0, name()); | |
| 4575 break; | |
| 4576 } | |
| 4577 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4578 assert(values_h->length() == 1 && | |
| 4579 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
| 4580 "Invalid threadStatus value"); | |
| 4581 | |
| 1142 | 4582 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4583 1, /* only 1 substate */ |
| 4584 CHECK_NULL); | |
| 4585 names_h = objArrayHandle(THREAD, r); | |
| 4586 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
| 4587 names_h->obj_at_put(0, name()); | |
| 4588 break; | |
| 4589 } | |
| 4590 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4591 assert(values_h->length() == 1 && | |
| 4592 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
| 4593 "Invalid threadStatus value"); | |
| 4594 | |
| 1142 | 4595 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4596 1, /* only 1 substate */ |
| 4597 CHECK_NULL); | |
| 4598 names_h = objArrayHandle(THREAD, r); | |
| 4599 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
| 4600 names_h->obj_at_put(0, name()); | |
| 4601 break; | |
| 4602 } | |
| 4603 case JAVA_THREAD_STATE_WAITING : { | |
| 4604 assert(values_h->length() == 2 && | |
| 4605 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
| 4606 values_h->int_at(1) == java_lang_Thread::PARKED, | |
| 4607 "Invalid threadStatus value"); | |
| 1142 | 4608 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4609 2, /* number of substates */ |
| 4610 CHECK_NULL); | |
| 4611 names_h = objArrayHandle(THREAD, r); | |
| 4612 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
| 4613 CHECK_NULL); | |
| 4614 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
| 4615 CHECK_NULL); | |
| 4616 names_h->obj_at_put(0, name0()); | |
| 4617 names_h->obj_at_put(1, name1()); | |
| 4618 break; | |
| 4619 } | |
| 4620 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4621 assert(values_h->length() == 3 && | |
| 4622 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
| 4623 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
| 4624 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
| 4625 "Invalid threadStatus value"); | |
| 1142 | 4626 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4627 3, /* number of substates */ |
| 4628 CHECK_NULL); | |
| 4629 names_h = objArrayHandle(THREAD, r); | |
| 4630 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
| 4631 CHECK_NULL); | |
| 4632 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
| 4633 CHECK_NULL); | |
| 4634 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
| 4635 CHECK_NULL); | |
| 4636 names_h->obj_at_put(0, name0()); | |
| 4637 names_h->obj_at_put(1, name1()); | |
| 4638 names_h->obj_at_put(2, name2()); | |
| 4639 break; | |
| 4640 } | |
| 4641 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4642 assert(values_h->length() == 1 && | |
| 4643 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
| 4644 "Invalid threadStatus value"); | |
| 1142 | 4645 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4646 1, /* only 1 substate */ |
| 4647 CHECK_NULL); | |
| 4648 names_h = objArrayHandle(THREAD, r); | |
| 4649 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
| 4650 names_h->obj_at_put(0, name()); | |
| 4651 break; | |
| 4652 } | |
| 4653 default: | |
| 4654 // Unknown state - probably incompatible JDK version | |
| 4655 return NULL; | |
| 4656 } | |
| 4657 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
| 4658 } | |
| 4659 JVM_END | |
| 4660 | |
| 4661 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
| 4662 { | |
| 4663 memset(info, 0, sizeof(info_size)); | |
| 4664 | |
| 4665 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
| 4666 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4667 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4668 | |
| 4669 // when we add a new capability in the jvm_version_info struct, we should also | |
| 4670 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
| 4671 // counter defined in runtimeService.cpp. | |
| 4672 info->is_attachable = AttachListener::is_attach_supported(); | |
| 4673 } | |
| 4674 JVM_END |