Mercurial > hg > truffle
annotate src/share/vm/prims/jvm.cpp @ 14651:cd30121047ac
8035893: JVM_GetVersionInfo fails to zero structure
Reviewed-by: sla, zgu
| author | igerasim |
|---|---|
| date | Fri, 28 Feb 2014 16:00:40 +0400 |
| parents | 016b6a289fc4 |
| children | b51e29501f30 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2014, 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 | |
| 14411 | 79 #ifdef TARGET_OS_FAMILY_aix |
| 80 # include "jvm_aix.h" | |
| 81 #endif | |
| 3960 | 82 #ifdef TARGET_OS_FAMILY_bsd |
| 83 # include "jvm_bsd.h" | |
| 84 #endif | |
| 1972 | 85 |
| 0 | 86 #include <errno.h> |
| 87 | |
| 88 /* | |
| 89 NOTE about use of any ctor or function call that can trigger a safepoint/GC: | |
| 90 such ctors and calls MUST NOT come between an oop declaration/init and its | |
| 91 usage because if objects are move this may cause various memory stomps, bus | |
| 92 errors and segfaults. Here is a cookbook for causing so called "naked oop | |
| 93 failures": | |
| 94 | |
| 95 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> { | |
| 96 JVMWrapper("JVM_GetClassDeclaredFields"); | |
| 97 | |
| 98 // Object address to be held directly in mirror & not visible to GC | |
| 99 oop mirror = JNIHandles::resolve_non_null(ofClass); | |
| 100 | |
| 101 // If this ctor can hit a safepoint, moving objects around, then | |
| 102 ComplexConstructor foo; | |
| 103 | |
| 104 // Boom! mirror may point to JUNK instead of the intended object | |
| 105 (some dereference of mirror) | |
| 106 | |
| 107 // Here's another call that may block for GC, making mirror stale | |
| 108 MutexLocker ml(some_lock); | |
| 109 | |
| 110 // And here's an initializer that can result in a stale oop | |
| 111 // all in one step. | |
| 112 oop o = call_that_can_throw_exception(TRAPS); | |
| 113 | |
| 114 | |
| 115 The solution is to keep the oop declaration BELOW the ctor or function | |
| 116 call that might cause a GC, do another resolve to reassign the oop, or | |
| 117 consider use of a Handle instead of an oop so there is immunity from object | |
| 118 motion. But note that the "QUICK" entries below do not have a handlemark | |
| 119 and thus can only support use of handles passed in. | |
| 120 */ | |
| 121 | |
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122 static void trace_class_resolution_impl(Klass* to_class, TRAPS) { |
| 0 | 123 ResourceMark rm; |
| 124 int line_number = -1; | |
| 125 const char * source_file = NULL; | |
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126 const char * trace = "explicit"; |
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127 InstanceKlass* caller = NULL; |
| 0 | 128 JavaThread* jthread = JavaThread::current(); |
| 129 if (jthread->has_last_Java_frame()) { | |
| 130 vframeStream vfst(jthread); | |
| 131 | |
| 132 // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames | |
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133 TempNewSymbol access_controller = SymbolTable::new_symbol("java/security/AccessController", CHECK); |
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134 Klass* access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); |
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135 TempNewSymbol privileged_action = SymbolTable::new_symbol("java/security/PrivilegedAction", CHECK); |
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136 Klass* privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); |
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137 |
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138 Method* last_caller = NULL; |
| 0 | 139 |
| 140 while (!vfst.at_end()) { | |
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141 Method* m = vfst.method(); |
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142 if (!vfst.method()->method_holder()->is_subclass_of(SystemDictionary::ClassLoader_klass())&& |
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143 !vfst.method()->method_holder()->is_subclass_of(access_controller_klass) && |
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144 !vfst.method()->method_holder()->is_subclass_of(privileged_action_klass)) { |
| 0 | 145 break; |
| 146 } | |
| 147 last_caller = m; | |
| 148 vfst.next(); | |
| 149 } | |
| 150 // if this is called from Class.forName0 and that is called from Class.forName, | |
| 151 // then print the caller of Class.forName. If this is Class.loadClass, then print | |
| 152 // that caller, otherwise keep quiet since this should be picked up elsewhere. | |
| 153 bool found_it = false; | |
| 154 if (!vfst.at_end() && | |
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155 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
| 0 | 156 vfst.method()->name() == vmSymbols::forName0_name()) { |
| 157 vfst.next(); | |
| 158 if (!vfst.at_end() && | |
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159 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
| 0 | 160 vfst.method()->name() == vmSymbols::forName_name()) { |
| 161 vfst.next(); | |
| 162 found_it = true; | |
| 163 } | |
| 164 } else if (last_caller != NULL && | |
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165 last_caller->method_holder()->name() == |
| 0 | 166 vmSymbols::java_lang_ClassLoader() && |
| 167 (last_caller->name() == vmSymbols::loadClassInternal_name() || | |
| 168 last_caller->name() == vmSymbols::loadClass_name())) { | |
| 169 found_it = true; | |
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170 } else if (!vfst.at_end()) { |
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171 if (vfst.method()->is_native()) { |
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172 // JNI call |
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173 found_it = true; |
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174 } |
| 0 | 175 } |
| 176 if (found_it && !vfst.at_end()) { | |
| 177 // found the caller | |
| 178 caller = vfst.method()->method_holder(); | |
| 179 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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180 if (line_number == -1) { |
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181 // show method name if it's a native method |
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182 trace = vfst.method()->name_and_sig_as_C_string(); |
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183 } |
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184 Symbol* s = caller->source_file_name(); |
| 0 | 185 if (s != NULL) { |
| 186 source_file = s->as_C_string(); | |
| 187 } | |
| 188 } | |
| 189 } | |
| 190 if (caller != NULL) { | |
| 191 if (to_class != caller) { | |
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192 const char * from = caller->external_name(); |
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193 const char * to = to_class->external_name(); |
| 0 | 194 // print in a single call to reduce interleaving between threads |
| 195 if (source_file != NULL) { | |
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196 tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace); |
| 0 | 197 } else { |
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198 tty->print("RESOLVE %s %s (%s)\n", from, to, trace); |
| 0 | 199 } |
| 200 } | |
| 201 } | |
| 202 } | |
| 203 | |
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204 void trace_class_resolution(Klass* to_class) { |
| 0 | 205 EXCEPTION_MARK; |
| 206 trace_class_resolution_impl(to_class, THREAD); | |
| 207 if (HAS_PENDING_EXCEPTION) { | |
| 208 CLEAR_PENDING_EXCEPTION; | |
| 209 } | |
| 210 } | |
| 211 | |
| 212 // Wrapper to trace JVM functions | |
| 213 | |
| 214 #ifdef ASSERT | |
| 215 class JVMTraceWrapper : public StackObj { | |
| 216 public: | |
| 217 JVMTraceWrapper(const char* format, ...) { | |
| 218 if (TraceJVMCalls) { | |
| 219 va_list ap; | |
| 220 va_start(ap, format); | |
| 221 tty->print("JVM "); | |
| 222 tty->vprint_cr(format, ap); | |
| 223 va_end(ap); | |
| 224 } | |
| 225 } | |
| 226 }; | |
| 227 | |
| 228 Histogram* JVMHistogram; | |
| 229 volatile jint JVMHistogram_lock = 0; | |
| 230 | |
| 231 class JVMHistogramElement : public HistogramElement { | |
| 232 public: | |
| 233 JVMHistogramElement(const char* name); | |
| 234 }; | |
| 235 | |
| 236 JVMHistogramElement::JVMHistogramElement(const char* elementName) { | |
| 237 _name = elementName; | |
| 238 uintx count = 0; | |
| 239 | |
| 240 while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) { | |
| 241 while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) { | |
| 242 count +=1; | |
| 243 if ( (WarnOnStalledSpinLock > 0) | |
| 244 && (count % WarnOnStalledSpinLock == 0)) { | |
| 245 warning("JVMHistogram_lock seems to be stalled"); | |
| 246 } | |
| 247 } | |
| 248 } | |
| 249 | |
| 250 if(JVMHistogram == NULL) | |
| 251 JVMHistogram = new Histogram("JVM Call Counts",100); | |
| 252 | |
| 253 JVMHistogram->add_element(this); | |
| 254 Atomic::dec(&JVMHistogram_lock); | |
| 255 } | |
| 256 | |
| 257 #define JVMCountWrapper(arg) \ | |
| 258 static JVMHistogramElement* e = new JVMHistogramElement(arg); \ | |
| 259 if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen! | |
| 260 | |
| 261 #define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) | |
| 262 #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) | |
| 263 #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) | |
| 264 #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) | |
| 265 #else | |
| 266 #define JVMWrapper(arg1) | |
| 267 #define JVMWrapper2(arg1, arg2) | |
| 268 #define JVMWrapper3(arg1, arg2, arg3) | |
| 269 #define JVMWrapper4(arg1, arg2, arg3, arg4) | |
| 270 #endif | |
| 271 | |
| 272 | |
| 273 // Interface version ///////////////////////////////////////////////////////////////////// | |
| 274 | |
| 275 | |
| 276 JVM_LEAF(jint, JVM_GetInterfaceVersion()) | |
| 277 return JVM_INTERFACE_VERSION; | |
| 278 JVM_END | |
| 279 | |
| 280 | |
| 281 // java.lang.System ////////////////////////////////////////////////////////////////////// | |
| 282 | |
| 283 | |
| 284 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored)) | |
| 285 JVMWrapper("JVM_CurrentTimeMillis"); | |
| 286 return os::javaTimeMillis(); | |
| 287 JVM_END | |
| 288 | |
| 289 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored)) | |
| 290 JVMWrapper("JVM_NanoTime"); | |
| 291 return os::javaTimeNanos(); | |
| 292 JVM_END | |
| 293 | |
| 294 | |
| 295 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, | |
| 296 jobject dst, jint dst_pos, jint length)) | |
| 297 JVMWrapper("JVM_ArrayCopy"); | |
| 298 // Check if we have null pointers | |
| 299 if (src == NULL || dst == NULL) { | |
| 300 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 301 } | |
| 302 arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); | |
| 303 arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); | |
| 304 assert(s->is_oop(), "JVM_ArrayCopy: src not an oop"); | |
| 305 assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); | |
| 306 // Do copy | |
| 6983 | 307 s->klass()->copy_array(s, src_pos, d, dst_pos, length, thread); |
| 0 | 308 JVM_END |
| 309 | |
| 310 | |
| 311 static void set_property(Handle props, const char* key, const char* value, TRAPS) { | |
| 312 JavaValue r(T_OBJECT); | |
| 313 // public synchronized Object put(Object key, Object value); | |
| 314 HandleMark hm(THREAD); | |
| 315 Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK); | |
| 316 Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK); | |
| 317 JavaCalls::call_virtual(&r, | |
| 318 props, | |
| 1142 | 319 KlassHandle(THREAD, SystemDictionary::Properties_klass()), |
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320 vmSymbols::put_name(), |
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321 vmSymbols::object_object_object_signature(), |
| 0 | 322 key_str, |
| 323 value_str, | |
| 324 THREAD); | |
| 325 } | |
| 326 | |
| 327 | |
| 328 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties)); | |
| 329 | |
| 330 | |
| 331 JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties)) | |
| 332 JVMWrapper("JVM_InitProperties"); | |
| 333 ResourceMark rm; | |
| 334 | |
| 335 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
| 336 | |
| 337 // System property list includes both user set via -D option and | |
| 338 // jvm system specific properties. | |
| 339 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
| 340 PUTPROP(props, p->key(), p->value()); | |
| 341 } | |
| 342 | |
| 343 // Convert the -XX:MaxDirectMemorySize= command line flag | |
| 344 // to the sun.nio.MaxDirectMemorySize property. | |
| 345 // Do this after setting user properties to prevent people | |
| 346 // from setting the value with a -D option, as requested. | |
| 347 { | |
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348 if (FLAG_IS_DEFAULT(MaxDirectMemorySize)) { |
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349 PUTPROP(props, "sun.nio.MaxDirectMemorySize", "-1"); |
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350 } else { |
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351 char as_chars[256]; |
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352 jio_snprintf(as_chars, sizeof(as_chars), UINTX_FORMAT, MaxDirectMemorySize); |
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353 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); |
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354 } |
| 0 | 355 } |
| 356 | |
| 357 // JVM monitoring and management support | |
| 358 // Add the sun.management.compiler property for the compiler's name | |
| 359 { | |
| 360 #undef CSIZE | |
| 361 #if defined(_LP64) || defined(_WIN64) | |
| 362 #define CSIZE "64-Bit " | |
| 363 #else | |
| 364 #define CSIZE | |
| 365 #endif // 64bit | |
| 366 | |
| 367 #ifdef TIERED | |
| 368 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; | |
| 369 #else | |
| 370 #if defined(COMPILER1) | |
| 371 const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; | |
| 372 #elif defined(COMPILER2) | |
| 373 const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; | |
| 374 #else | |
| 375 const char* compiler_name = ""; | |
| 376 #endif // compilers | |
| 377 #endif // TIERED | |
| 378 | |
| 379 if (*compiler_name != '\0' && | |
| 380 (Arguments::mode() != Arguments::_int)) { | |
| 381 PUTPROP(props, "sun.management.compiler", compiler_name); | |
| 382 } | |
| 383 } | |
| 384 | |
| 385 return properties; | |
| 386 JVM_END | |
| 387 | |
| 388 | |
| 389 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// | |
| 390 | |
| 391 extern volatile jint vm_created; | |
| 392 | |
| 393 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
| 394 if (vm_created != 0 && (code == 0)) { | |
| 395 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
| 396 Universe::run_finalizers_on_exit(); | |
| 397 } | |
| 398 before_exit(thread); | |
| 399 vm_exit(code); | |
| 400 JVM_END | |
| 401 | |
| 402 | |
| 403 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
| 404 before_exit(thread); | |
| 405 vm_exit(code); | |
| 406 JVM_END | |
| 407 | |
| 408 | |
| 409 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
| 410 register_on_exit_function(func); | |
| 411 JVM_END | |
| 412 | |
| 413 | |
| 414 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
| 415 JVMWrapper("JVM_GC"); | |
| 416 if (!DisableExplicitGC) { | |
| 417 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
| 418 } | |
| 419 JVM_END | |
| 420 | |
| 421 | |
| 422 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
| 423 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
| 424 return Universe::heap()->millis_since_last_gc(); | |
| 425 JVM_END | |
| 426 | |
| 427 | |
| 428 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
| 429 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
| 430 JVM_END | |
| 431 | |
| 432 | |
| 433 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
| 434 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
| 435 JVM_END | |
| 436 | |
| 437 static inline jlong convert_size_t_to_jlong(size_t val) { | |
| 438 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
| 439 NOT_LP64 (return (jlong)val;) | |
| 440 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
| 441 } | |
| 442 | |
| 443 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
| 444 JVMWrapper("JVM_TotalMemory"); | |
| 445 size_t n = Universe::heap()->capacity(); | |
| 446 return convert_size_t_to_jlong(n); | |
| 447 JVM_END | |
| 448 | |
| 449 | |
| 450 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
| 451 JVMWrapper("JVM_FreeMemory"); | |
| 452 CollectedHeap* ch = Universe::heap(); | |
|
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453 size_t n; |
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454 { |
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455 MutexLocker x(Heap_lock); |
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456 n = ch->capacity() - ch->used(); |
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457 } |
| 0 | 458 return convert_size_t_to_jlong(n); |
| 459 JVM_END | |
| 460 | |
| 461 | |
| 462 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
| 463 JVMWrapper("JVM_MaxMemory"); | |
| 464 size_t n = Universe::heap()->max_capacity(); | |
| 465 return convert_size_t_to_jlong(n); | |
| 466 JVM_END | |
| 467 | |
| 468 | |
| 469 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
| 470 JVMWrapper("JVM_ActiveProcessorCount"); | |
| 471 return os::active_processor_count(); | |
| 472 JVM_END | |
| 473 | |
| 474 | |
| 475 | |
| 476 // java.lang.Throwable ////////////////////////////////////////////////////// | |
| 477 | |
| 478 | |
| 479 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
| 480 JVMWrapper("JVM_FillInStackTrace"); | |
| 481 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
| 482 java_lang_Throwable::fill_in_stack_trace(exception); | |
| 483 JVM_END | |
| 484 | |
| 485 | |
| 486 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
| 487 JVMWrapper("JVM_GetStackTraceDepth"); | |
| 488 oop exception = JNIHandles::resolve(throwable); | |
| 489 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
| 490 JVM_END | |
| 491 | |
| 492 | |
| 493 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
| 494 JVMWrapper("JVM_GetStackTraceElement"); | |
| 495 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
| 496 oop exception = JNIHandles::resolve(throwable); | |
| 497 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
| 498 return JNIHandles::make_local(env, element); | |
| 499 JVM_END | |
| 500 | |
| 501 | |
| 502 // java.lang.Object /////////////////////////////////////////////// | |
| 503 | |
| 504 | |
| 505 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
| 506 JVMWrapper("JVM_IHashCode"); | |
| 507 // as implemented in the classic virtual machine; return 0 if object is NULL | |
| 508 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
| 509 JVM_END | |
| 510 | |
| 511 | |
| 512 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
| 513 JVMWrapper("JVM_MonitorWait"); | |
| 514 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 515 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
| 516 if (JvmtiExport::should_post_monitor_wait()) { | |
| 517 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
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518 |
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519 // The current thread already owns the monitor and it has not yet |
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520 // been added to the wait queue so the current thread cannot be |
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521 // made the successor. This means that the JVMTI_EVENT_MONITOR_WAIT |
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522 // event handler cannot accidentally consume an unpark() meant for |
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523 // the ParkEvent associated with this ObjectMonitor. |
| 0 | 524 } |
| 525 ObjectSynchronizer::wait(obj, ms, CHECK); | |
| 526 JVM_END | |
| 527 | |
| 528 | |
| 529 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
| 530 JVMWrapper("JVM_MonitorNotify"); | |
| 531 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 532 ObjectSynchronizer::notify(obj, CHECK); | |
| 533 JVM_END | |
| 534 | |
| 535 | |
| 536 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
| 537 JVMWrapper("JVM_MonitorNotifyAll"); | |
| 538 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 539 ObjectSynchronizer::notifyall(obj, CHECK); | |
| 540 JVM_END | |
| 541 | |
| 542 | |
| 543 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
| 544 JVMWrapper("JVM_Clone"); | |
| 545 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 546 const KlassHandle klass (THREAD, obj->klass()); | |
| 547 JvmtiVMObjectAllocEventCollector oam; | |
| 548 | |
| 549 #ifdef ASSERT | |
| 550 // Just checking that the cloneable flag is set correct | |
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551 if (obj->is_array()) { |
| 0 | 552 guarantee(klass->is_cloneable(), "all arrays are cloneable"); |
| 553 } else { | |
| 554 guarantee(obj->is_instance(), "should be instanceOop"); | |
| 1142 | 555 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
| 0 | 556 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
| 557 } | |
| 558 #endif | |
| 559 | |
| 560 // Check if class of obj supports the Cloneable interface. | |
| 561 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
| 562 if (!klass->is_cloneable()) { | |
| 563 ResourceMark rm(THREAD); | |
| 564 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
| 565 } | |
| 566 | |
| 567 // Make shallow object copy | |
| 568 const int size = obj->size(); | |
| 569 oop new_obj = NULL; | |
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570 if (obj->is_array()) { |
| 0 | 571 const int length = ((arrayOop)obj())->length(); |
| 572 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
| 573 } else { | |
| 574 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
| 575 } | |
| 576 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
| 577 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
| 578 // be suspended in the middle of copying the pointer and end up with parts | |
| 579 // of two different pointers in the field. Subsequent dereferences will crash. | |
| 580 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
| 581 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
| 582 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
| 583 // The same is true of StubRoutines::object_copy and the various oop_copy | |
| 584 // variants, and of the code generated by the inline_native_clone intrinsic. | |
| 585 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
| 586 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
| 587 (size_t)align_object_size(size) / HeapWordsPerLong); | |
| 588 // Clear the header | |
| 589 new_obj->init_mark(); | |
| 590 | |
| 591 // Store check (mark entire object and let gc sort it out) | |
| 592 BarrierSet* bs = Universe::heap()->barrier_set(); | |
| 593 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
| 594 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
| 595 | |
| 596 // Caution: this involves a java upcall, so the clone should be | |
| 597 // "gc-robust" by this stage. | |
| 598 if (klass->has_finalizer()) { | |
| 599 assert(obj->is_instance(), "should be instanceOop"); | |
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600 new_obj = InstanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); |
| 0 | 601 } |
| 602 | |
| 603 return JNIHandles::make_local(env, oop(new_obj)); | |
| 604 JVM_END | |
| 605 | |
| 606 // java.lang.Compiler //////////////////////////////////////////////////// | |
| 607 | |
| 608 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
| 609 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
| 610 // functions are all silently ignored unless JVM warnings are printed. | |
| 611 | |
| 612 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
| 613 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
| 614 JVM_END | |
| 615 | |
| 616 | |
| 617 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
| 618 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
| 619 return JNI_FALSE; | |
| 620 JVM_END | |
| 621 | |
| 622 | |
| 623 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
| 624 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
| 625 return JNI_FALSE; | |
| 626 JVM_END | |
| 627 | |
| 628 | |
| 629 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
| 630 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
| 631 return JNI_FALSE; | |
| 632 JVM_END | |
| 633 | |
| 634 | |
| 635 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
| 636 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
| 637 return NULL; | |
| 638 JVM_END | |
| 639 | |
| 640 | |
| 641 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
| 642 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
| 643 JVM_END | |
| 644 | |
| 645 | |
| 646 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
| 647 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
| 648 JVM_END | |
| 649 | |
| 650 | |
| 651 | |
| 652 // Error message support ////////////////////////////////////////////////////// | |
| 653 | |
| 654 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
| 655 JVMWrapper("JVM_GetLastErrorString"); | |
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656 return (jint)os::lasterror(buf, len); |
| 0 | 657 JVM_END |
| 658 | |
| 659 | |
| 660 // java.io.File /////////////////////////////////////////////////////////////// | |
| 661 | |
| 662 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
| 663 JVMWrapper2("JVM_NativePath (%s)", path); | |
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664 return os::native_path(path); |
| 0 | 665 JVM_END |
| 666 | |
| 667 | |
| 668 // Misc. class handling /////////////////////////////////////////////////////////// | |
| 669 | |
| 670 | |
| 671 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
| 672 JVMWrapper("JVM_GetCallerClass"); | |
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673 |
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674 // Pre-JDK 8 and early builds of JDK 8 don't have a CallerSensitive annotation; or |
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675 // sun.reflect.Reflection.getCallerClass with a depth parameter is provided |
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676 // temporarily for existing code to use until a replacement API is defined. |
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677 if (SystemDictionary::reflect_CallerSensitive_klass() == NULL || depth != JVM_CALLER_DEPTH) { |
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678 Klass* k = thread->security_get_caller_class(depth); |
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679 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, k->java_mirror()); |
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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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diff
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|
707 break; |
|
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diff
changeset
|
708 default: |
|
16885e702c88
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diff
changeset
|
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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changeset
|
712 } |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
713 break; |
|
16885e702c88
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diff
changeset
|
714 } |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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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 |
|
abe076e3636f
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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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changeset
|
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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diff
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|
767 // into the constant pool. |
|
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|
768 return NULL; |
|
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diff
changeset
|
769 } |
|
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diff
changeset
|
770 |
|
2177
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changeset
|
771 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
|
6725
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diff
changeset
|
772 Klass* k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
|
878
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mchung
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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
changeset
|
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
parents:
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diff
changeset
|
776 |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
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diff
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
mchung
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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
parents:
875
diff
changeset
|
783 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
|
abe076e3636f
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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
parents:
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diff
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|
786 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
|
abe076e3636f
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diff
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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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changeset
|
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 } | |
|
2177
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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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changeset
|
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.
acorn
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
parents:
388
diff
changeset
|
869 if (source == NULL) source = "__JVM_DefineClass__"; |
| 0 | 870 |
|
875
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6857194: Add hotspot perf counters to aid class loading performance measurement
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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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mchung
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726
diff
changeset
|
873 |
|
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parents:
726
diff
changeset
|
874 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
|
6a93908f268f
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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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diff
changeset
|
876 ClassLoader::perf_define_appclasses(), |
|
6a93908f268f
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changeset
|
877 jt->get_thread_stat()->perf_recursion_counts_addr(), |
|
6a93908f268f
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mchung
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726
diff
changeset
|
878 jt->get_thread_stat()->perf_timers_addr(), |
|
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mchung
parents:
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 | |
| 1125 | |
| 11010 | 1126 static bool is_authorized(Handle context, instanceKlassHandle klass, TRAPS) { |
| 1127 // If there is a security manager and protection domain, check the access | |
| 1128 // in the protection domain, otherwise it is authorized. | |
| 1129 if (java_lang_System::has_security_manager()) { | |
| 1130 | |
| 1131 // For bootstrapping, if pd implies method isn't in the JDK, allow | |
| 1132 // this context to revert to older behavior. | |
| 1133 // In this case the isAuthorized field in AccessControlContext is also not | |
| 1134 // present. | |
| 1135 if (Universe::protection_domain_implies_method() == NULL) { | |
| 1136 return true; | |
| 1137 } | |
| 1138 | |
| 1139 // Whitelist certain access control contexts | |
| 1140 if (java_security_AccessControlContext::is_authorized(context)) { | |
| 1141 return true; | |
| 1142 } | |
| 1143 | |
| 1144 oop prot = klass->protection_domain(); | |
| 1145 if (prot != NULL) { | |
| 1146 // Call pd.implies(new SecurityPermission("createAccessControlContext")) | |
| 1147 // in the new wrapper. | |
| 1148 methodHandle m(THREAD, Universe::protection_domain_implies_method()); | |
| 1149 Handle h_prot(THREAD, prot); | |
| 1150 JavaValue result(T_BOOLEAN); | |
| 1151 JavaCallArguments args(h_prot); | |
| 1152 JavaCalls::call(&result, m, &args, CHECK_false); | |
| 1153 return (result.get_jboolean() != 0); | |
| 1154 } | |
| 1155 } | |
| 1156 return true; | |
| 1157 } | |
| 1158 | |
| 1159 // Create an AccessControlContext with a protection domain with null codesource | |
| 1160 // and null permissions - which gives no permissions. | |
| 1161 oop create_dummy_access_control_context(TRAPS) { | |
| 1162 InstanceKlass* pd_klass = InstanceKlass::cast(SystemDictionary::ProtectionDomain_klass()); | |
| 1163 // new ProtectionDomain(null,null); | |
| 1164 oop null_protection_domain = pd_klass->allocate_instance(CHECK_NULL); | |
| 1165 Handle null_pd(THREAD, null_protection_domain); | |
| 1166 | |
| 1167 // new ProtectionDomain[] {pd}; | |
| 1168 objArrayOop context = oopFactory::new_objArray(pd_klass, 1, CHECK_NULL); | |
| 1169 context->obj_at_put(0, null_pd()); | |
| 1170 | |
| 1171 // new AccessControlContext(new ProtectionDomain[] {pd}) | |
| 1172 objArrayHandle h_context(THREAD, context); | |
| 1173 oop result = java_security_AccessControlContext::create(h_context, false, Handle(), CHECK_NULL); | |
| 1174 return result; | |
| 1175 } | |
| 0 | 1176 |
| 1177 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
| 1178 JVMWrapper("JVM_DoPrivileged"); | |
| 1179 | |
| 1180 if (action == NULL) { | |
| 1181 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
| 1182 } | |
| 1183 | |
| 11010 | 1184 // Compute the frame initiating the do privileged operation and setup the privileged stack |
| 1185 vframeStream vfst(thread); | |
| 1186 vfst.security_get_caller_frame(1); | |
| 1187 | |
| 1188 if (vfst.at_end()) { | |
| 1189 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "no caller?"); | |
| 1190 } | |
| 1191 | |
| 1192 Method* method = vfst.method(); | |
| 1193 instanceKlassHandle klass (THREAD, method->method_holder()); | |
| 1194 | |
| 1195 // Check that action object understands "Object run()" | |
| 1196 Handle h_context; | |
| 1197 if (context != NULL) { | |
| 1198 h_context = Handle(THREAD, JNIHandles::resolve(context)); | |
| 1199 bool authorized = is_authorized(h_context, klass, CHECK_NULL); | |
| 1200 if (!authorized) { | |
| 1201 // Create an unprivileged access control object and call it's run function | |
| 1202 // instead. | |
| 1203 oop noprivs = create_dummy_access_control_context(CHECK_NULL); | |
| 1204 h_context = Handle(THREAD, noprivs); | |
| 1205 } | |
| 1206 } | |
| 0 | 1207 |
| 1208 // Check that action object understands "Object run()" | |
| 1209 Handle object (THREAD, JNIHandles::resolve(action)); | |
| 1210 | |
| 1211 // get run() method | |
| 6983 | 1212 Method* m_oop = object->klass()->uncached_lookup_method( |
| 0 | 1213 vmSymbols::run_method_name(), |
| 1214 vmSymbols::void_object_signature()); | |
| 1215 methodHandle m (THREAD, m_oop); | |
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1216 if (m.is_null() || !m->is_method() || !m()->is_public() || m()->is_static()) { |
| 0 | 1217 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); |
| 1218 } | |
| 1219 | |
| 11010 | 1220 // Stack allocated list of privileged stack elements |
| 1221 PrivilegedElement pi; | |
| 0 | 1222 if (!vfst.at_end()) { |
| 11010 | 1223 pi.initialize(&vfst, h_context(), thread->privileged_stack_top(), CHECK_NULL); |
| 0 | 1224 thread->set_privileged_stack_top(&pi); |
| 1225 } | |
| 1226 | |
| 1227 | |
| 1228 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
| 1229 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
| 1230 Handle pending_exception; | |
| 1231 JavaValue result(T_OBJECT); | |
| 1232 JavaCallArguments args(object); | |
| 1233 JavaCalls::call(&result, m, &args, THREAD); | |
| 1234 | |
| 1235 // done with action, remove ourselves from the list | |
| 1236 if (!vfst.at_end()) { | |
| 1237 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
| 1238 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
| 1239 } | |
| 1240 | |
| 1241 if (HAS_PENDING_EXCEPTION) { | |
| 1242 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
| 1243 CLEAR_PENDING_EXCEPTION; | |
|
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1244 // JVMTI has already reported the pending exception |
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1245 // JVMTI internal flag reset is needed in order to report PrivilegedActionException |
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1246 if (THREAD->is_Java_thread()) { |
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1247 JvmtiExport::clear_detected_exception((JavaThread*) THREAD); |
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1248 } |
| 1142 | 1249 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
| 1250 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
| 0 | 1251 // Throw a java.security.PrivilegedActionException(Exception e) exception |
| 1252 JavaCallArguments args(pending_exception); | |
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1253 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1254 vmSymbols::exception_void_signature(), |
| 0 | 1255 &args); |
| 1256 } | |
| 1257 } | |
| 1258 | |
| 1259 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
| 1260 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
| 1261 JVM_END | |
| 1262 | |
| 1263 | |
| 1264 // Returns the inherited_access_control_context field of the running thread. | |
| 1265 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1266 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
| 1267 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
| 1268 return JNIHandles::make_local(env, result); | |
| 1269 JVM_END | |
| 1270 | |
| 1271 class RegisterArrayForGC { | |
| 1272 private: | |
| 1273 JavaThread *_thread; | |
| 1274 public: | |
| 1275 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
| 1276 _thread = thread; | |
| 1277 _thread->register_array_for_gc(array); | |
| 1278 } | |
| 1279 | |
| 1280 ~RegisterArrayForGC() { | |
| 1281 _thread->register_array_for_gc(NULL); | |
| 1282 } | |
| 1283 }; | |
| 1284 | |
| 1285 | |
| 1286 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1287 JVMWrapper("JVM_GetStackAccessControlContext"); | |
| 1288 if (!UsePrivilegedStack) return NULL; | |
| 1289 | |
| 1290 ResourceMark rm(THREAD); | |
| 1291 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
| 1292 JvmtiVMObjectAllocEventCollector oam; | |
| 1293 | |
| 1294 // count the protection domains on the execution stack. We collapse | |
| 1295 // duplicate consecutive protection domains into a single one, as | |
| 1296 // well as stopping when we hit a privileged frame. | |
| 1297 | |
| 1298 // Use vframeStream to iterate through Java frames | |
| 1299 vframeStream vfst(thread); | |
| 1300 | |
| 1301 oop previous_protection_domain = NULL; | |
| 1302 Handle privileged_context(thread, NULL); | |
| 1303 bool is_privileged = false; | |
| 1304 oop protection_domain = NULL; | |
| 1305 | |
| 1306 for(; !vfst.at_end(); vfst.next()) { | |
| 1307 // get method of frame | |
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1308 Method* method = vfst.method(); |
| 0 | 1309 intptr_t* frame_id = vfst.frame_id(); |
| 1310 | |
| 1311 // check the privileged frames to see if we have a match | |
| 1312 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
| 1313 // this frame is privileged | |
| 1314 is_privileged = true; | |
| 1315 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
| 1316 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
| 1317 } else { | |
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1318 protection_domain = method->method_holder()->protection_domain(); |
| 0 | 1319 } |
| 1320 | |
| 1321 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
| 1322 local_array->push(protection_domain); | |
| 1323 previous_protection_domain = protection_domain; | |
| 1324 } | |
| 1325 | |
| 1326 if (is_privileged) break; | |
| 1327 } | |
| 1328 | |
| 1329 | |
| 1330 // either all the domains on the stack were system domains, or | |
| 1331 // we had a privileged system domain | |
| 1332 if (local_array->is_empty()) { | |
| 1333 if (is_privileged && privileged_context.is_null()) return NULL; | |
| 1334 | |
| 1335 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
| 1336 return JNIHandles::make_local(env, result); | |
| 1337 } | |
| 1338 | |
| 1339 // the resource area must be registered in case of a gc | |
| 1340 RegisterArrayForGC ragc(thread, local_array); | |
| 1142 | 1341 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
| 0 | 1342 local_array->length(), CHECK_NULL); |
| 1343 objArrayHandle h_context(thread, context); | |
| 1344 for (int index = 0; index < local_array->length(); index++) { | |
| 1345 h_context->obj_at_put(index, local_array->at(index)); | |
| 1346 } | |
| 1347 | |
| 1348 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
| 1349 | |
| 1350 return JNIHandles::make_local(env, result); | |
| 1351 JVM_END | |
| 1352 | |
| 1353 | |
| 1354 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
| 1355 JVMWrapper("JVM_IsArrayClass"); | |
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1356 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1357 return (k != NULL) && k->oop_is_array() ? true : false; |
| 0 | 1358 JVM_END |
| 1359 | |
| 1360 | |
| 1361 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
| 1362 JVMWrapper("JVM_IsPrimitiveClass"); | |
| 1363 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1364 return (jboolean) java_lang_Class::is_primitive(mirror); | |
| 1365 JVM_END | |
| 1366 | |
| 1367 | |
| 1368 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
| 1369 JVMWrapper("JVM_GetComponentType"); | |
| 1370 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1371 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
| 1372 return (jclass) JNIHandles::make_local(env, result); | |
| 1373 JVM_END | |
| 1374 | |
| 1375 | |
| 1376 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
| 1377 JVMWrapper("JVM_GetClassModifiers"); | |
| 1378 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1379 // Primitive type | |
| 1380 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 1381 } | |
| 1382 | |
| 6983 | 1383 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 1384 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); |
| 1385 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
| 1386 return k->modifier_flags(); | |
| 1387 JVM_END | |
| 1388 | |
| 1389 | |
| 1390 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
| 1391 | |
| 1392 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
| 1393 JvmtiVMObjectAllocEventCollector oam; | |
| 1394 // ofClass is a reference to a java_lang_Class object. The mirror object | |
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1395 // of an InstanceKlass |
| 0 | 1396 |
| 1397 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1398 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
| 1142 | 1399 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1400 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1401 } | |
| 1402 | |
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1403 instanceKlassHandle k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
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1404 InnerClassesIterator iter(k); |
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1405 |
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1406 if (iter.length() == 0) { |
| 0 | 1407 // Neither an inner nor outer class |
| 1142 | 1408 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1409 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1410 } | |
| 1411 | |
| 1412 // find inner class info | |
| 1413 constantPoolHandle cp(thread, k->constants()); | |
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1414 int length = iter.length(); |
| 0 | 1415 |
| 1416 // Allocate temp. result array | |
| 1142 | 1417 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
| 0 | 1418 objArrayHandle result (THREAD, r); |
| 1419 int members = 0; | |
| 1420 | |
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1421 for (; !iter.done(); iter.next()) { |
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1422 int ioff = iter.inner_class_info_index(); |
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1423 int ooff = iter.outer_class_info_index(); |
| 0 | 1424 |
| 1425 if (ioff != 0 && ooff != 0) { | |
| 1426 // Check to see if the name matches the class we're looking for | |
| 1427 // before attempting to find the class. | |
| 1428 if (cp->klass_name_at_matches(k, ooff)) { | |
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1429 Klass* outer_klass = cp->klass_at(ooff, CHECK_NULL); |
| 0 | 1430 if (outer_klass == k()) { |
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1431 Klass* ik = cp->klass_at(ioff, CHECK_NULL); |
| 0 | 1432 instanceKlassHandle inner_klass (THREAD, ik); |
| 1433 | |
| 1434 // Throws an exception if outer klass has not declared k as | |
| 1435 // an inner klass | |
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1436 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
| 0 | 1437 |
| 1438 result->obj_at_put(members, inner_klass->java_mirror()); | |
| 1439 members++; | |
| 1440 } | |
| 1441 } | |
| 1442 } | |
| 1443 } | |
| 1444 | |
| 1445 if (members != length) { | |
| 1446 // Return array of right length | |
| 1142 | 1447 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
| 0 | 1448 for(int i = 0; i < members; i++) { |
| 1449 res->obj_at_put(i, result->obj_at(i)); | |
| 1450 } | |
| 1451 return (jobjectArray)JNIHandles::make_local(env, res); | |
| 1452 } | |
| 1453 | |
| 1454 return (jobjectArray)JNIHandles::make_local(env, result()); | |
| 1455 JVM_END | |
| 1456 | |
| 1457 | |
| 1458 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
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1459 { |
| 0 | 1460 // ofClass is a reference to a java_lang_Class object. |
| 1461 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1462 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
| 0 | 1463 return NULL; |
| 1464 } | |
| 1465 | |
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1466 bool inner_is_member = false; |
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1467 Klass* outer_klass |
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1468 = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)) |
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1469 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
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1470 if (outer_klass == NULL) return NULL; // already a top-level class |
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1471 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
| 6983 | 1472 return (jclass) JNIHandles::make_local(env, outer_klass->java_mirror()); |
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1473 } |
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1474 JVM_END |
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1475 |
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1476 // should be in InstanceKlass.cpp, but is here for historical reasons |
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1477 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
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1478 bool* inner_is_member, |
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1479 TRAPS) { |
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1480 Thread* thread = THREAD; |
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1481 InnerClassesIterator iter(k); |
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1482 if (iter.length() == 0) { |
| 0 | 1483 // No inner class info => no declaring class |
| 1484 return NULL; | |
| 1485 } | |
| 1486 | |
| 1487 constantPoolHandle i_cp(thread, k->constants()); | |
| 1488 | |
| 1489 bool found = false; | |
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1490 Klass* ok; |
| 0 | 1491 instanceKlassHandle outer_klass; |
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1492 *inner_is_member = false; |
| 0 | 1493 |
| 1494 // Find inner_klass attribute | |
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1495 for (; !iter.done() && !found; iter.next()) { |
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1496 int ioff = iter.inner_class_info_index(); |
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1497 int ooff = iter.outer_class_info_index(); |
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1498 int noff = iter.inner_name_index(); |
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1499 if (ioff != 0) { |
| 0 | 1500 // Check to see if the name matches the class we're looking for |
| 1501 // before attempting to find the class. | |
| 1502 if (i_cp->klass_name_at_matches(k, ioff)) { | |
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1503 Klass* inner_klass = i_cp->klass_at(ioff, CHECK_NULL); |
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1504 found = (k() == inner_klass); |
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1505 if (found && ooff != 0) { |
| 0 | 1506 ok = i_cp->klass_at(ooff, CHECK_NULL); |
| 1507 outer_klass = instanceKlassHandle(thread, ok); | |
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1508 *inner_is_member = true; |
| 0 | 1509 } |
| 1510 } | |
| 1511 } | |
| 1512 } | |
| 1513 | |
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1514 if (found && outer_klass.is_null()) { |
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1515 // It may be anonymous; try for that. |
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1516 int encl_method_class_idx = k->enclosing_method_class_index(); |
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1517 if (encl_method_class_idx != 0) { |
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1518 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
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1519 outer_klass = instanceKlassHandle(thread, ok); |
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1520 *inner_is_member = false; |
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1521 } |
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1522 } |
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1523 |
| 0 | 1524 // If no inner class attribute found for this class. |
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1525 if (outer_klass.is_null()) return NULL; |
| 0 | 1526 |
| 1527 // Throws an exception if outer klass has not declared k as an inner klass | |
|
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1528 // We need evidence that each klass knows about the other, or else |
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|
1529 // the system could allow a spoof of an inner class to gain access rights. |
|
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6895168: JCK api/signaturetest/sigtest.basic.html#basic test fails for jdk 5.0 with HS 16 in nightly build
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|
1530 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
|
665
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diff
changeset
|
1531 return outer_klass(); |
|
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|
1532 } |
| 0 | 1533 |
| 1534 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
| 1535 assert (cls != NULL, "illegal class"); | |
| 1536 JVMWrapper("JVM_GetClassSignature"); | |
| 1537 JvmtiVMObjectAllocEventCollector oam; | |
| 1538 ResourceMark rm(THREAD); | |
| 1539 // Return null for arrays and primatives | |
| 1540 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
|
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changeset
|
1541 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 6983 | 1542 if (k->oop_is_instance()) { |
|
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diff
changeset
|
1543 Symbol* sym = InstanceKlass::cast(k)->generic_signature(); |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
1544 if (sym == NULL) return NULL; |
| 0 | 1545 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 1546 return (jstring) JNIHandles::make_local(env, str()); | |
| 1547 } | |
| 1548 } | |
| 1549 return NULL; | |
| 1550 JVM_END | |
| 1551 | |
| 1552 | |
| 1553 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
| 1554 assert (cls != NULL, "illegal class"); | |
| 1555 JVMWrapper("JVM_GetClassAnnotations"); | |
|
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diff
changeset
|
1556 |
| 0 | 1557 // Return null for arrays and primitives |
| 1558 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
|
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changeset
|
1559 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 6983 | 1560 if (k->oop_is_instance()) { |
|
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|
1561 typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->class_annotations(), CHECK_NULL); |
|
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|
1562 return (jbyteArray) JNIHandles::make_local(env, a); |
| 0 | 1563 } |
| 1564 } | |
| 1565 return NULL; | |
| 1566 JVM_END | |
| 1567 | |
| 1568 | |
|
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|
1569 static bool jvm_get_field_common(jobject field, fieldDescriptor& fd, TRAPS) { |
| 0 | 1570 // some of this code was adapted from from jni_FromReflectedField |
| 1571 | |
| 1572 oop reflected = JNIHandles::resolve_non_null(field); | |
| 1573 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
|
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|
1574 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 1575 int slot = java_lang_reflect_Field::slot(reflected); |
| 1576 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
| 1577 | |
| 1578 KlassHandle kh(THREAD, k); | |
|
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diff
changeset
|
1579 intptr_t offset = InstanceKlass::cast(kh())->field_offset(slot); |
| 0 | 1580 |
| 1581 if (modifiers & JVM_ACC_STATIC) { | |
| 1582 // for static fields we only look in the current class | |
|
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|
1583 if (!InstanceKlass::cast(kh())->find_local_field_from_offset(offset, true, &fd)) { |
| 0 | 1584 assert(false, "cannot find static field"); |
|
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|
1585 return false; |
| 0 | 1586 } |
| 1587 } else { | |
| 1588 // for instance fields we start with the current class and work | |
| 1589 // our way up through the superclass chain | |
|
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diff
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|
1590 if (!InstanceKlass::cast(kh())->find_field_from_offset(offset, false, &fd)) { |
| 0 | 1591 assert(false, "cannot find instance field"); |
|
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changeset
|
1592 return false; |
| 0 | 1593 } |
| 1594 } | |
|
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|
1595 return true; |
|
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changeset
|
1596 } |
|
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|
1597 |
|
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changeset
|
1598 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) |
|
1916ca1dec2f
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diff
changeset
|
1599 // field is a handle to a java.lang.reflect.Field object |
|
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changeset
|
1600 assert(field != NULL, "illegal field"); |
|
1916ca1dec2f
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changeset
|
1601 JVMWrapper("JVM_GetFieldAnnotations"); |
|
1916ca1dec2f
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diff
changeset
|
1602 |
|
1916ca1dec2f
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diff
changeset
|
1603 fieldDescriptor fd; |
|
1916ca1dec2f
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diff
changeset
|
1604 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
|
1916ca1dec2f
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diff
changeset
|
1605 if (!gotFd) { |
|
1916ca1dec2f
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diff
changeset
|
1606 return NULL; |
|
1916ca1dec2f
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diff
changeset
|
1607 } |
| 0 | 1608 |
|
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diff
changeset
|
1609 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.annotations(), THREAD)); |
| 0 | 1610 JVM_END |
| 1611 | |
| 1612 | |
|
7462
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7457
diff
changeset
|
1613 static Method* jvm_get_method_common(jobject method) { |
| 0 | 1614 // some of this code was adapted from from jni_FromReflectedMethod |
| 1615 | |
| 1616 oop reflected = JNIHandles::resolve_non_null(method); | |
| 1617 oop mirror = NULL; | |
| 1618 int slot = 0; | |
| 1619 | |
| 1142 | 1620 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
| 0 | 1621 mirror = java_lang_reflect_Constructor::clazz(reflected); |
| 1622 slot = java_lang_reflect_Constructor::slot(reflected); | |
| 1623 } else { | |
| 1142 | 1624 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
| 0 | 1625 "wrong type"); |
| 1626 mirror = java_lang_reflect_Method::clazz(reflected); | |
| 1627 slot = java_lang_reflect_Method::slot(reflected); | |
| 1628 } | |
|
6725
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diff
changeset
|
1629 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 1630 |
|
7462
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coleenp
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7457
diff
changeset
|
1631 Method* m = InstanceKlass::cast(k)->method_with_idnum(slot); |
|
8818
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diff
changeset
|
1632 assert(m != NULL, "cannot find method"); |
|
1916ca1dec2f
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diff
changeset
|
1633 return m; // caller has to deal with NULL in product mode |
| 0 | 1634 } |
| 1635 | |
| 1636 | |
| 1637 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
| 1638 JVMWrapper("JVM_GetMethodAnnotations"); | |
| 1639 | |
| 1640 // method is a handle to a java.lang.reflect.Method object | |
|
7462
ade95d680b42
8004728: Add hotspot support for parameter reflection
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diff
changeset
|
1641 Method* m = jvm_get_method_common(method); |
|
8818
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8805
diff
changeset
|
1642 if (m == NULL) { |
|
1916ca1dec2f
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parents:
8805
diff
changeset
|
1643 return NULL; |
|
1916ca1dec2f
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parents:
8805
diff
changeset
|
1644 } |
|
1916ca1dec2f
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8805
diff
changeset
|
1645 |
|
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6271
diff
changeset
|
1646 return (jbyteArray) JNIHandles::make_local(env, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
1647 Annotations::make_java_array(m->annotations(), THREAD)); |
| 0 | 1648 JVM_END |
| 1649 | |
| 1650 | |
| 1651 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
| 1652 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
| 1653 | |
| 1654 // method is a handle to a java.lang.reflect.Method object | |
|
7462
ade95d680b42
8004728: Add hotspot support for parameter reflection
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7457
diff
changeset
|
1655 Method* m = jvm_get_method_common(method); |
|
8818
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8009382: Add JVM_Get{Field|Method}TypeAnnotations
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8805
diff
changeset
|
1656 if (m == NULL) { |
|
1916ca1dec2f
8009382: Add JVM_Get{Field|Method}TypeAnnotations
rbackman
parents:
8805
diff
changeset
|
1657 return NULL; |
|
1916ca1dec2f
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rbackman
parents:
8805
diff
changeset
|
1658 } |
|
1916ca1dec2f
8009382: Add JVM_Get{Field|Method}TypeAnnotations
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8805
diff
changeset
|
1659 |
|
6725
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diff
changeset
|
1660 return (jbyteArray) JNIHandles::make_local(env, |
|
da91efe96a93
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coleenp
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6271
diff
changeset
|
1661 Annotations::make_java_array(m->annotation_default(), THREAD)); |
| 0 | 1662 JVM_END |
| 1663 | |
| 1664 | |
| 1665 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
| 1666 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
| 1667 | |
| 1668 // method is a handle to a java.lang.reflect.Method object | |
|
7462
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8004728: Add hotspot support for parameter reflection
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changeset
|
1669 Method* m = jvm_get_method_common(method); |
|
8818
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diff
changeset
|
1670 if (m == NULL) { |
|
1916ca1dec2f
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diff
changeset
|
1671 return NULL; |
|
1916ca1dec2f
8009382: Add JVM_Get{Field|Method}TypeAnnotations
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8805
diff
changeset
|
1672 } |
|
1916ca1dec2f
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diff
changeset
|
1673 |
|
6725
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diff
changeset
|
1674 return (jbyteArray) JNIHandles::make_local(env, |
|
da91efe96a93
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6271
diff
changeset
|
1675 Annotations::make_java_array(m->parameter_annotations(), THREAD)); |
| 0 | 1676 JVM_END |
| 1677 | |
|
7457
35431a769282
8004823: Add VM support for type annotation reflection
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diff
changeset
|
1678 /* Type use annotations support (JDK 1.8) */ |
|
35431a769282
8004823: Add VM support for type annotation reflection
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parents:
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diff
changeset
|
1679 |
|
35431a769282
8004823: Add VM support for type annotation reflection
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diff
changeset
|
1680 JVM_ENTRY(jbyteArray, JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls)) |
|
35431a769282
8004823: Add VM support for type annotation reflection
stefank
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6983
diff
changeset
|
1681 assert (cls != NULL, "illegal class"); |
|
35431a769282
8004823: Add VM support for type annotation reflection
stefank
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6983
diff
changeset
|
1682 JVMWrapper("JVM_GetClassTypeAnnotations"); |
|
35431a769282
8004823: Add VM support for type annotation reflection
stefank
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6983
diff
changeset
|
1683 ResourceMark rm(THREAD); |
|
35431a769282
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6983
diff
changeset
|
1684 // Return null for arrays and primitives |
|
35431a769282
8004823: Add VM support for type annotation reflection
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diff
changeset
|
1685 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
|
35431a769282
8004823: Add VM support for type annotation reflection
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changeset
|
1686 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
|
35431a769282
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diff
changeset
|
1687 if (k->oop_is_instance()) { |
| 8031 | 1688 AnnotationArray* type_annotations = InstanceKlass::cast(k)->class_type_annotations(); |
|
7611
ff0a7943fd29
8005994: Method annotations are allocated unnecessarily during class file parsing
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diff
changeset
|
1689 if (type_annotations != NULL) { |
| 8031 | 1690 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
|
7611
ff0a7943fd29
8005994: Method annotations are allocated unnecessarily during class file parsing
stefank
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diff
changeset
|
1691 return (jbyteArray) JNIHandles::make_local(env, a); |
|
ff0a7943fd29
8005994: Method annotations are allocated unnecessarily during class file parsing
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diff
changeset
|
1692 } |
|
7457
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|
1693 } |
|
35431a769282
8004823: Add VM support for type annotation reflection
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changeset
|
1694 } |
|
35431a769282
8004823: Add VM support for type annotation reflection
stefank
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6983
diff
changeset
|
1695 return NULL; |
|
35431a769282
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stefank
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6983
diff
changeset
|
1696 JVM_END |
|
35431a769282
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diff
changeset
|
1697 |
|
8818
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changeset
|
1698 JVM_ENTRY(jbyteArray, JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method)) |
|
1916ca1dec2f
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changeset
|
1699 assert (method != NULL, "illegal method"); |
|
1916ca1dec2f
8009382: Add JVM_Get{Field|Method}TypeAnnotations
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diff
changeset
|
1700 JVMWrapper("JVM_GetMethodTypeAnnotations"); |
|
1916ca1dec2f
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diff
changeset
|
1701 |
|
1916ca1dec2f
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changeset
|
1702 // method is a handle to a java.lang.reflect.Method object |
|
1916ca1dec2f
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diff
changeset
|
1703 Method* m = jvm_get_method_common(method); |
|
1916ca1dec2f
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rbackman
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8805
diff
changeset
|
1704 if (m == NULL) { |
|
1916ca1dec2f
8009382: Add JVM_Get{Field|Method}TypeAnnotations
rbackman
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diff
changeset
|
1705 return NULL; |
|
1916ca1dec2f
8009382: Add JVM_Get{Field|Method}TypeAnnotations
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diff
changeset
|
1706 } |
|
1916ca1dec2f
8009382: Add JVM_Get{Field|Method}TypeAnnotations
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changeset
|
1707 |
|
1916ca1dec2f
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diff
changeset
|
1708 AnnotationArray* type_annotations = m->type_annotations(); |
|
1916ca1dec2f
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diff
changeset
|
1709 if (type_annotations != NULL) { |
|
1916ca1dec2f
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diff
changeset
|
1710 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
|
1916ca1dec2f
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changeset
|
1711 return (jbyteArray) JNIHandles::make_local(env, a); |
|
1916ca1dec2f
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changeset
|
1712 } |
|
1916ca1dec2f
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changeset
|
1713 |
|
1916ca1dec2f
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diff
changeset
|
1714 return NULL; |
|
1916ca1dec2f
8009382: Add JVM_Get{Field|Method}TypeAnnotations
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diff
changeset
|
1715 JVM_END |
|
1916ca1dec2f
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changeset
|
1716 |
|
1916ca1dec2f
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changeset
|
1717 JVM_ENTRY(jbyteArray, JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field)) |
|
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1718 assert (field != NULL, "illegal field"); |
|
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|
1719 JVMWrapper("JVM_GetFieldTypeAnnotations"); |
|
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|
1720 |
|
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|
1721 fieldDescriptor fd; |
|
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|
1722 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
|
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|
1723 if (!gotFd) { |
|
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|
1724 return NULL; |
|
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|
1725 } |
|
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|
1726 |
|
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|
1727 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.type_annotations(), THREAD)); |
|
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1728 JVM_END |
|
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1729 |
|
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1730 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { |
|
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1731 if (!cp->is_within_bounds(index)) { |
|
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1732 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); |
|
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1733 } |
|
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1734 } |
|
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1735 |
|
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1736 JVM_ENTRY(jobjectArray, JVM_GetMethodParameters(JNIEnv *env, jobject method)) |
|
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1737 { |
|
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|
1738 JVMWrapper("JVM_GetMethodParameters"); |
|
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|
1739 // method is a handle to a java.lang.reflect.Method object |
|
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1740 Method* method_ptr = jvm_get_method_common(method); |
|
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1741 methodHandle mh (THREAD, method_ptr); |
|
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1742 Handle reflected_method (THREAD, JNIHandles::resolve_non_null(method)); |
|
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1743 const int num_params = mh->method_parameters_length(); |
|
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1744 |
|
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1745 if (0 != num_params) { |
|
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1746 // make sure all the symbols are properly formatted |
|
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1747 for (int i = 0; i < num_params; i++) { |
|
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1748 MethodParametersElement* params = mh->method_parameters_start(); |
|
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1749 int index = params[i].name_cp_index; |
|
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|
1750 bounds_check(mh->constants(), index, CHECK_NULL); |
|
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1751 |
|
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1752 if (0 != index && !mh->constants()->tag_at(index).is_utf8()) { |
|
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1753 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), |
|
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1754 "Wrong type at constant pool index"); |
|
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|
1755 } |
|
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1756 |
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1757 } |
|
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1758 |
|
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1759 objArrayOop result_oop = oopFactory::new_objArray(SystemDictionary::reflect_Parameter_klass(), num_params, CHECK_NULL); |
|
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1760 objArrayHandle result (THREAD, result_oop); |
|
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|
1761 |
|
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1762 for (int i = 0; i < num_params; i++) { |
|
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|
1763 MethodParametersElement* params = mh->method_parameters_start(); |
|
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1764 // For a 0 index, give a NULL symbol |
|
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1765 Symbol* sym = 0 != params[i].name_cp_index ? |
|
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1766 mh->constants()->symbol_at(params[i].name_cp_index) : NULL; |
|
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1767 int flags = params[i].flags; |
|
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1768 oop param = Reflection::new_parameter(reflected_method, i, sym, |
|
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1769 flags, CHECK_NULL); |
|
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|
1770 result->obj_at_put(i, param); |
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1771 } |
|
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1772 return (jobjectArray)JNIHandles::make_local(env, result()); |
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1773 } else { |
|
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1774 return (jobjectArray)NULL; |
|
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|
1775 } |
|
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|
1776 } |
|
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|
1777 JVM_END |
| 0 | 1778 |
| 1779 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
| 1780 | |
| 1781 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1782 { | |
| 1783 JVMWrapper("JVM_GetClassDeclaredFields"); | |
| 1784 JvmtiVMObjectAllocEventCollector oam; | |
| 1785 | |
| 1786 // Exclude primitive types and array types | |
| 1787 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1788 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
| 0 | 1789 // Return empty array |
| 1142 | 1790 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
| 0 | 1791 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1792 } | |
| 1793 | |
|
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1794 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
| 0 | 1795 constantPoolHandle cp(THREAD, k->constants()); |
| 1796 | |
| 1797 // Ensure class is linked | |
| 1798 k->link_class(CHECK_NULL); | |
| 1799 | |
| 1800 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
| 1801 bool skip_backtrace = false; | |
| 1802 | |
| 1803 // Allocate result | |
| 1804 int num_fields; | |
| 1805 | |
| 1806 if (publicOnly) { | |
| 1807 num_fields = 0; | |
| 3938 | 1808 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
| 1809 if (fs.access_flags().is_public()) ++num_fields; | |
| 0 | 1810 } |
| 1811 } else { | |
| 3938 | 1812 num_fields = k->java_fields_count(); |
| 0 | 1813 |
| 1142 | 1814 if (k() == SystemDictionary::Throwable_klass()) { |
| 0 | 1815 num_fields--; |
| 1816 skip_backtrace = true; | |
| 1817 } | |
| 1818 } | |
| 1819 | |
| 1142 | 1820 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
| 0 | 1821 objArrayHandle result (THREAD, r); |
| 1822 | |
| 1823 int out_idx = 0; | |
| 1824 fieldDescriptor fd; | |
| 3938 | 1825 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
| 0 | 1826 if (skip_backtrace) { |
| 1827 // 4496456 skip java.lang.Throwable.backtrace | |
| 3938 | 1828 int offset = fs.offset(); |
| 0 | 1829 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
| 1830 } | |
| 1831 | |
| 3938 | 1832 if (!publicOnly || fs.access_flags().is_public()) { |
|
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|
1833 fd.reinitialize(k(), fs.index()); |
| 0 | 1834 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
| 1835 result->obj_at_put(out_idx, field); | |
| 1836 ++out_idx; | |
| 1837 } | |
| 1838 } | |
| 1839 assert(out_idx == num_fields, "just checking"); | |
| 1840 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1841 } | |
| 1842 JVM_END | |
| 1843 | |
|
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1844 static bool select_method(methodHandle method, bool want_constructor) { |
|
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1845 if (want_constructor) { |
|
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1846 return (method->is_initializer() && !method->is_static()); |
|
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1847 } else { |
|
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1848 return (!method->is_initializer() && !method->is_overpass()); |
|
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1849 } |
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1850 } |
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1851 |
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1852 static jobjectArray get_class_declared_methods_helper( |
|
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1853 JNIEnv *env, |
|
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1854 jclass ofClass, jboolean publicOnly, |
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1855 bool want_constructor, |
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1856 Klass* klass, TRAPS) { |
|
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1857 |
| 0 | 1858 JvmtiVMObjectAllocEventCollector oam; |
| 1859 | |
| 1860 // Exclude primitive types and array types | |
| 1861 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
| 6983 | 1862 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
| 0 | 1863 // Return empty array |
|
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1864 oop res = oopFactory::new_objArray(klass, 0, CHECK_NULL); |
| 0 | 1865 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1866 } | |
| 1867 | |
|
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1868 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
| 0 | 1869 |
| 1870 // Ensure class is linked | |
| 1871 k->link_class(CHECK_NULL); | |
| 1872 | |
|
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1873 Array<Method*>* methods = k->methods(); |
| 0 | 1874 int methods_length = methods->length(); |
|
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1875 |
|
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1876 // Save original method_idnum in case of redefinition, which can change |
|
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1877 // the idnum of obsolete methods. The new method will have the same idnum |
|
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1878 // but if we refresh the methods array, the counts will be wrong. |
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1879 ResourceMark rm(THREAD); |
|
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|
1880 GrowableArray<int>* idnums = new GrowableArray<int>(methods_length); |
| 0 | 1881 int num_methods = 0; |
| 1882 | |
|
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1883 for (int i = 0; i < methods_length; i++) { |
|
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1884 methodHandle method(THREAD, methods->at(i)); |
|
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1885 if (select_method(method, want_constructor)) { |
| 0 | 1886 if (!publicOnly || method->is_public()) { |
|
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|
1887 idnums->push(method->method_idnum()); |
| 0 | 1888 ++num_methods; |
| 1889 } | |
| 1890 } | |
| 1891 } | |
| 1892 | |
| 1893 // Allocate result | |
|
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1894 objArrayOop r = oopFactory::new_objArray(klass, num_methods, CHECK_NULL); |
| 0 | 1895 objArrayHandle result (THREAD, r); |
| 1896 | |
|
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1897 // Now just put the methods that we selected above, but go by their idnum |
|
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1898 // in case of redefinition. The methods can be redefined at any safepoint, |
|
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1899 // so above when allocating the oop array and below when creating reflect |
|
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1900 // objects. |
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1901 for (int i = 0; i < num_methods; i++) { |
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1902 methodHandle method(THREAD, k->method_with_idnum(idnums->at(i))); |
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1903 if (method.is_null()) { |
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1904 // Method may have been deleted and seems this API can handle null |
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1905 // Otherwise should probably put a method that throws NSME |
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1906 result->obj_at_put(i, NULL); |
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1907 } else { |
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1908 oop m; |
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1909 if (want_constructor) { |
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1910 m = Reflection::new_constructor(method, CHECK_NULL); |
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1911 } else { |
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1912 m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); |
| 0 | 1913 } |
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1914 result->obj_at_put(i, m); |
| 0 | 1915 } |
| 1916 } | |
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1917 |
| 0 | 1918 return (jobjectArray) JNIHandles::make_local(env, result()); |
| 1919 } | |
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1920 |
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1921 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) |
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1922 { |
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1923 JVMWrapper("JVM_GetClassDeclaredMethods"); |
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1924 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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1925 /*want_constructor*/ false, |
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1926 SystemDictionary::reflect_Method_klass(), THREAD); |
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1927 } |
| 0 | 1928 JVM_END |
| 1929 | |
| 1930 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1931 { | |
| 1932 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
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1933 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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1934 /*want_constructor*/ true, |
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1935 SystemDictionary::reflect_Constructor_klass(), THREAD); |
| 0 | 1936 } |
| 1937 JVM_END | |
| 1938 | |
| 1939 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
| 1940 { | |
| 1941 JVMWrapper("JVM_GetClassAccessFlags"); | |
| 1942 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1943 // Primitive type | |
| 1944 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 1945 } | |
| 1946 | |
| 6983 | 1947 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 1948 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; |
| 1949 } | |
| 1950 JVM_END | |
| 1951 | |
| 1952 | |
| 1953 // Constant pool access ////////////////////////////////////////////////////////// | |
| 1954 | |
| 1955 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
| 1956 { | |
| 1957 JVMWrapper("JVM_GetClassConstantPool"); | |
| 1958 JvmtiVMObjectAllocEventCollector oam; | |
| 1959 | |
| 1960 // Return null for primitives and arrays | |
| 1961 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
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1962 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1963 if (k->oop_is_instance()) { |
| 0 | 1964 instanceKlassHandle k_h(THREAD, k); |
| 1965 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
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1966 sun_reflect_ConstantPool::set_cp(jcp(), k_h->constants()); |
| 0 | 1967 return JNIHandles::make_local(jcp()); |
| 1968 } | |
| 1969 } | |
| 1970 return NULL; | |
| 1971 } | |
| 1972 JVM_END | |
| 1973 | |
| 1974 | |
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1975 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject obj, jobject unused)) |
| 0 | 1976 { |
| 1977 JVMWrapper("JVM_ConstantPoolGetSize"); | |
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1978 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1979 return cp->length(); |
| 1980 } | |
| 1981 JVM_END | |
| 1982 | |
| 1983 | |
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1984 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 1985 { |
| 1986 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
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1987 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1988 bounds_check(cp, index, CHECK_NULL); |
| 1989 constantTag tag = cp->tag_at(index); | |
| 1990 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 1991 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1992 } | |
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1993 Klass* k = cp->klass_at(index, CHECK_NULL); |
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1994 return (jclass) JNIHandles::make_local(k->java_mirror()); |
| 0 | 1995 } |
| 1996 JVM_END | |
| 1997 | |
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1998 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 1999 { |
| 2000 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
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2001 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2002 bounds_check(cp, index, CHECK_NULL); |
| 2003 constantTag tag = cp->tag_at(index); | |
| 2004 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 2005 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2006 } | |
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2007 Klass* k = ConstantPool::klass_at_if_loaded(cp, index); |
| 0 | 2008 if (k == NULL) return NULL; |
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2009 return (jclass) JNIHandles::make_local(k->java_mirror()); |
| 0 | 2010 } |
| 2011 JVM_END | |
| 2012 | |
| 2013 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 2014 constantTag tag = cp->tag_at(index); | |
| 2015 if (!tag.is_method() && !tag.is_interface_method()) { | |
| 2016 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2017 } | |
| 2018 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2019 Klass* k_o; |
| 0 | 2020 if (force_resolution) { |
| 2021 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 2022 } else { | |
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2023 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
| 0 | 2024 if (k_o == NULL) return NULL; |
| 2025 } | |
| 2026 instanceKlassHandle k(THREAD, k_o); | |
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2027 Symbol* name = cp->uncached_name_ref_at(index); |
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2028 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 2029 methodHandle m (THREAD, k->find_method(name, sig)); |
| 2030 if (m.is_null()) { | |
| 2031 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
| 2032 } | |
| 2033 oop method; | |
| 2034 if (!m->is_initializer() || m->is_static()) { | |
| 2035 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
| 2036 } else { | |
| 2037 method = Reflection::new_constructor(m, CHECK_NULL); | |
| 2038 } | |
| 2039 return JNIHandles::make_local(method); | |
| 2040 } | |
| 2041 | |
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2042 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2043 { |
| 2044 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
| 2045 JvmtiVMObjectAllocEventCollector oam; | |
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2046 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2047 bounds_check(cp, index, CHECK_NULL); |
| 2048 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
| 2049 return res; | |
| 2050 } | |
| 2051 JVM_END | |
| 2052 | |
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2053 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2054 { |
| 2055 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
| 2056 JvmtiVMObjectAllocEventCollector oam; | |
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2057 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2058 bounds_check(cp, index, CHECK_NULL); |
| 2059 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
| 2060 return res; | |
| 2061 } | |
| 2062 JVM_END | |
| 2063 | |
| 2064 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 2065 constantTag tag = cp->tag_at(index); | |
| 2066 if (!tag.is_field()) { | |
| 2067 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2068 } | |
| 2069 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2070 Klass* k_o; |
| 0 | 2071 if (force_resolution) { |
| 2072 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 2073 } else { | |
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2074 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
| 0 | 2075 if (k_o == NULL) return NULL; |
| 2076 } | |
| 2077 instanceKlassHandle k(THREAD, k_o); | |
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2078 Symbol* name = cp->uncached_name_ref_at(index); |
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2079 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 2080 fieldDescriptor fd; |
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2081 Klass* target_klass = k->find_field(name, sig, &fd); |
| 0 | 2082 if (target_klass == NULL) { |
| 2083 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
| 2084 } | |
| 2085 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
| 2086 return JNIHandles::make_local(field); | |
| 2087 } | |
| 2088 | |
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2089 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject obj, jobject unusedl, jint index)) |
| 0 | 2090 { |
| 2091 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
| 2092 JvmtiVMObjectAllocEventCollector oam; | |
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2093 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2094 bounds_check(cp, index, CHECK_NULL); |
| 2095 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
| 2096 return res; | |
| 2097 } | |
| 2098 JVM_END | |
| 2099 | |
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2100 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2101 { |
| 2102 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
| 2103 JvmtiVMObjectAllocEventCollector oam; | |
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2104 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2105 bounds_check(cp, index, CHECK_NULL); |
| 2106 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
| 2107 return res; | |
| 2108 } | |
| 2109 JVM_END | |
| 2110 | |
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2111 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2112 { |
| 2113 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
| 2114 JvmtiVMObjectAllocEventCollector oam; | |
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2115 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2116 bounds_check(cp, index, CHECK_NULL); |
| 2117 constantTag tag = cp->tag_at(index); | |
| 2118 if (!tag.is_field_or_method()) { | |
| 2119 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2120 } | |
| 2121 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2122 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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2123 Symbol* member_name = cp->uncached_name_ref_at(index); |
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2124 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
| 1142 | 2125 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
| 0 | 2126 objArrayHandle dest(THREAD, dest_o); |
| 2127 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
| 2128 dest->obj_at_put(0, str()); | |
| 2129 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
| 2130 dest->obj_at_put(1, str()); | |
| 2131 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
| 2132 dest->obj_at_put(2, str()); | |
| 2133 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 2134 } | |
| 2135 JVM_END | |
| 2136 | |
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2137 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2138 { |
| 2139 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
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2140 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2141 bounds_check(cp, index, CHECK_0); |
| 2142 constantTag tag = cp->tag_at(index); | |
| 2143 if (!tag.is_int()) { | |
| 2144 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2145 } | |
| 2146 return cp->int_at(index); | |
| 2147 } | |
| 2148 JVM_END | |
| 2149 | |
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2150 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2151 { |
| 2152 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
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2153 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2154 bounds_check(cp, index, CHECK_(0L)); |
| 2155 constantTag tag = cp->tag_at(index); | |
| 2156 if (!tag.is_long()) { | |
| 2157 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2158 } | |
| 2159 return cp->long_at(index); | |
| 2160 } | |
| 2161 JVM_END | |
| 2162 | |
|
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2163 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2164 { |
| 2165 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
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2166 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2167 bounds_check(cp, index, CHECK_(0.0f)); |
| 2168 constantTag tag = cp->tag_at(index); | |
| 2169 if (!tag.is_float()) { | |
| 2170 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2171 } | |
| 2172 return cp->float_at(index); | |
| 2173 } | |
| 2174 JVM_END | |
| 2175 | |
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2176 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2177 { |
| 2178 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
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2179 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2180 bounds_check(cp, index, CHECK_(0.0)); |
| 2181 constantTag tag = cp->tag_at(index); | |
| 2182 if (!tag.is_double()) { | |
| 2183 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2184 } | |
| 2185 return cp->double_at(index); | |
| 2186 } | |
| 2187 JVM_END | |
| 2188 | |
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2189 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2190 { |
| 2191 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
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2192 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2193 bounds_check(cp, index, CHECK_NULL); |
| 2194 constantTag tag = cp->tag_at(index); | |
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2195 if (!tag.is_string()) { |
| 0 | 2196 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
| 2197 } | |
| 2198 oop str = cp->string_at(index, CHECK_NULL); | |
| 2199 return (jstring) JNIHandles::make_local(str); | |
| 2200 } | |
| 2201 JVM_END | |
| 2202 | |
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2203 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2204 { |
| 2205 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
| 2206 JvmtiVMObjectAllocEventCollector oam; | |
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2207 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2208 bounds_check(cp, index, CHECK_NULL); |
| 2209 constantTag tag = cp->tag_at(index); | |
| 2210 if (!tag.is_symbol()) { | |
| 2211 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2212 } | |
|
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2213 Symbol* sym = cp->symbol_at(index); |
| 0 | 2214 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 2215 return (jstring) JNIHandles::make_local(str()); | |
| 2216 } | |
| 2217 JVM_END | |
| 2218 | |
| 2219 | |
| 2220 // Assertion support. ////////////////////////////////////////////////////////// | |
| 2221 | |
| 2222 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
| 2223 JVMWrapper("JVM_DesiredAssertionStatus"); | |
| 2224 assert(cls != NULL, "bad class"); | |
| 2225 | |
| 2226 oop r = JNIHandles::resolve(cls); | |
| 2227 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
| 2228 if (java_lang_Class::is_primitive(r)) return false; | |
| 2229 | |
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2230 Klass* k = java_lang_Class::as_Klass(r); |
| 6983 | 2231 assert(k->oop_is_instance(), "must be an instance klass"); |
| 2232 if (! k->oop_is_instance()) return false; | |
| 0 | 2233 |
| 2234 ResourceMark rm(THREAD); | |
| 6983 | 2235 const char* name = k->name()->as_C_string(); |
| 2236 bool system_class = k->class_loader() == NULL; | |
| 0 | 2237 return JavaAssertions::enabled(name, system_class); |
| 2238 | |
| 2239 JVM_END | |
| 2240 | |
| 2241 | |
| 2242 // Return a new AssertionStatusDirectives object with the fields filled in with | |
| 2243 // command-line assertion arguments (i.e., -ea, -da). | |
| 2244 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
| 2245 JVMWrapper("JVM_AssertionStatusDirectives"); | |
| 2246 JvmtiVMObjectAllocEventCollector oam; | |
| 2247 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
| 2248 return JNIHandles::make_local(env, asd); | |
| 2249 JVM_END | |
| 2250 | |
| 2251 // Verification //////////////////////////////////////////////////////////////////////////////// | |
| 2252 | |
| 2253 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
| 2254 | |
| 2255 // RedefineClasses support: bug 6214132 caused verification to fail. | |
| 2256 // All functions from this section should call the jvmtiThreadSate function: | |
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2257 // Klass* class_to_verify_considering_redefinition(Klass* klass). |
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2258 // The function returns a Klass* of the _scratch_class if the verifier |
| 0 | 2259 // was invoked in the middle of the class redefinition. |
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2260 // Otherwise it returns its argument value which is the _the_class Klass*. |
| 0 | 2261 // Please, refer to the description in the jvmtiThreadSate.hpp. |
| 2262 | |
| 2263 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
| 2264 JVMWrapper("JVM_GetClassNameUTF"); | |
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2265 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2266 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2267 return k->name()->as_utf8(); |
| 0 | 2268 JVM_END |
| 2269 | |
| 2270 | |
| 2271 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
| 2272 JVMWrapper("JVM_GetClassCPTypes"); | |
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2273 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2274 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2275 // types will have length zero if this is not an InstanceKlass |
| 0 | 2276 // (length is determined by call to JVM_GetClassCPEntriesCount) |
| 6983 | 2277 if (k->oop_is_instance()) { |
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2278 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2279 for (int index = cp->length() - 1; index >= 0; index--) { |
| 2280 constantTag tag = cp->tag_at(index); | |
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2281 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : tag.value(); |
| 0 | 2282 } |
| 2283 } | |
| 2284 JVM_END | |
| 2285 | |
| 2286 | |
| 2287 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
| 2288 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
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2289 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2290 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2291 if (!k->oop_is_instance()) |
| 0 | 2292 return 0; |
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2293 return InstanceKlass::cast(k)->constants()->length(); |
| 0 | 2294 JVM_END |
| 2295 | |
| 2296 | |
| 2297 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
| 2298 JVMWrapper("JVM_GetClassFieldsCount"); | |
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2299 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2300 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2301 if (!k->oop_is_instance()) |
| 0 | 2302 return 0; |
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2303 return InstanceKlass::cast(k)->java_fields_count(); |
| 0 | 2304 JVM_END |
| 2305 | |
| 2306 | |
| 2307 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
| 2308 JVMWrapper("JVM_GetClassMethodsCount"); | |
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2309 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2310 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2311 if (!k->oop_is_instance()) |
| 0 | 2312 return 0; |
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2313 return InstanceKlass::cast(k)->methods()->length(); |
| 0 | 2314 JVM_END |
| 2315 | |
| 2316 | |
| 2317 // The following methods, used for the verifier, are never called with | |
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2318 // array klasses, so a direct cast to InstanceKlass is safe. |
| 0 | 2319 // Typically, these methods are called in a loop with bounds determined |
| 2320 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
| 2321 // zero for arrays. | |
| 2322 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
| 2323 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
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2324 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2325 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2326 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2327 int length = method->checked_exceptions_length(); |
| 0 | 2328 if (length > 0) { |
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2329 CheckedExceptionElement* table= method->checked_exceptions_start(); |
| 0 | 2330 for (int i = 0; i < length; i++) { |
| 2331 exceptions[i] = table[i].class_cp_index; | |
| 2332 } | |
| 2333 } | |
| 2334 JVM_END | |
| 2335 | |
| 2336 | |
| 2337 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
| 2338 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
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2339 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2340 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2341 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2342 return method->checked_exceptions_length(); |
| 0 | 2343 JVM_END |
| 2344 | |
| 2345 | |
| 2346 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
| 2347 JVMWrapper("JVM_GetMethodIxByteCode"); | |
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2348 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2349 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2350 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2351 memcpy(code, method->code_base(), method->code_size()); |
| 0 | 2352 JVM_END |
| 2353 | |
| 2354 | |
| 2355 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
| 2356 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
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2357 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2358 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2359 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2360 return method->code_size(); |
| 0 | 2361 JVM_END |
| 2362 | |
| 2363 | |
| 2364 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
| 2365 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
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2366 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2367 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2368 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2369 ExceptionTable extable(method); |
|
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2370 entry->start_pc = extable.start_pc(entry_index); |
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2371 entry->end_pc = extable.end_pc(entry_index); |
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2372 entry->handler_pc = extable.handler_pc(entry_index); |
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2373 entry->catchType = extable.catch_type_index(entry_index); |
| 0 | 2374 JVM_END |
| 2375 | |
| 2376 | |
| 2377 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
| 2378 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
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2379 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2380 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2381 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2382 return method->exception_table_length(); |
| 0 | 2383 JVM_END |
| 2384 | |
| 2385 | |
| 2386 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
| 2387 JVMWrapper("JVM_GetMethodIxModifiers"); | |
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2388 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2389 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2390 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2391 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
| 0 | 2392 JVM_END |
| 2393 | |
| 2394 | |
| 2395 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
| 2396 JVMWrapper("JVM_GetFieldIxModifiers"); | |
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2397 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2398 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2399 return InstanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
| 0 | 2400 JVM_END |
| 2401 | |
| 2402 | |
| 2403 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
| 2404 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
|
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2405 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2406 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2407 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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2408 return method->max_locals(); |
| 0 | 2409 JVM_END |
| 2410 | |
| 2411 | |
| 2412 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
| 2413 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
|
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|
2414 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2415 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2416 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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2417 return method->size_of_parameters(); |
| 0 | 2418 JVM_END |
| 2419 | |
| 2420 | |
| 2421 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
| 2422 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
|
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2423 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2424 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2425 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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2426 return method->verifier_max_stack(); |
| 0 | 2427 JVM_END |
| 2428 | |
| 2429 | |
| 2430 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
| 2431 JVMWrapper("JVM_IsConstructorIx"); | |
| 2432 ResourceMark rm(THREAD); | |
|
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2433 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2434 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2435 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2436 return method->name() == vmSymbols::object_initializer_name(); |
| 0 | 2437 JVM_END |
| 2438 | |
| 2439 | |
|
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2440 JVM_QUICK_ENTRY(jboolean, JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cls, int method_index)) |
|
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2441 JVMWrapper("JVM_IsVMGeneratedMethodIx"); |
|
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2442 ResourceMark rm(THREAD); |
|
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2443 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
|
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2444 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2445 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2446 return method->is_overpass(); |
|
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|
2447 JVM_END |
|
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|
2448 |
| 0 | 2449 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) |
| 2450 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
|
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2451 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2452 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2453 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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2454 return method->name()->as_utf8(); |
| 0 | 2455 JVM_END |
| 2456 | |
| 2457 | |
| 2458 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
| 2459 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
|
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2460 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2461 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2462 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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2463 return method->signature()->as_utf8(); |
| 0 | 2464 JVM_END |
| 2465 | |
| 2466 /** | |
| 2467 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
| 2468 * read entries in the constant pool. Since the old verifier always | |
| 2469 * works on a copy of the code, it will not see any rewriting that | |
| 2470 * may possibly occur in the middle of verification. So it is important | |
| 2471 * that nothing it calls tries to use the cpCache instead of the raw | |
| 2472 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
| 2473 */ | |
| 2474 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2475 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
|
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2476 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2477 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2478 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2479 switch (cp->tag_at(cp_index).value()) { |
| 2480 case JVM_CONSTANT_Fieldref: | |
| 2481 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
| 2482 default: | |
| 2483 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
| 2484 } | |
| 2485 ShouldNotReachHere(); | |
| 2486 return NULL; | |
| 2487 JVM_END | |
| 2488 | |
| 2489 | |
| 2490 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2491 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
|
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2492 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2493 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2494 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2495 switch (cp->tag_at(cp_index).value()) { |
| 2496 case JVM_CONSTANT_InterfaceMethodref: | |
| 2497 case JVM_CONSTANT_Methodref: | |
|
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2498 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2499 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
| 2500 default: | |
| 2501 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
| 2502 } | |
| 2503 ShouldNotReachHere(); | |
| 2504 return NULL; | |
| 2505 JVM_END | |
| 2506 | |
| 2507 | |
| 2508 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2509 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
|
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2510 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2511 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2512 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2513 switch (cp->tag_at(cp_index).value()) { |
| 2514 case JVM_CONSTANT_InterfaceMethodref: | |
| 2515 case JVM_CONSTANT_Methodref: | |
|
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2516 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2517 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
| 2518 default: | |
| 2519 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
| 2520 } | |
| 2521 ShouldNotReachHere(); | |
| 2522 return NULL; | |
| 2523 JVM_END | |
| 2524 | |
| 2525 | |
| 2526 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2527 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
|
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|
2528 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2529 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2530 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2531 switch (cp->tag_at(cp_index).value()) { |
| 2532 case JVM_CONSTANT_Fieldref: | |
| 2533 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
| 2534 default: | |
| 2535 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
| 2536 } | |
| 2537 ShouldNotReachHere(); | |
| 2538 return NULL; | |
| 2539 JVM_END | |
| 2540 | |
| 2541 | |
| 2542 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2543 JVMWrapper("JVM_GetCPClassNameUTF"); | |
|
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|
2544 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2545 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2546 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
|
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2547 Symbol* classname = cp->klass_name_at(cp_index); |
| 0 | 2548 return classname->as_utf8(); |
| 2549 JVM_END | |
| 2550 | |
| 2551 | |
| 2552 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2553 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
|
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|
2554 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2555 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2556 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2557 switch (cp->tag_at(cp_index).value()) { |
| 2558 case JVM_CONSTANT_Fieldref: { | |
| 2559 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
|
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2560 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2561 return classname->as_utf8(); |
| 2562 } | |
| 2563 default: | |
| 2564 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
| 2565 } | |
| 2566 ShouldNotReachHere(); | |
| 2567 return NULL; | |
| 2568 JVM_END | |
| 2569 | |
| 2570 | |
| 2571 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2572 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
|
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|
2573 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2574 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2575 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2576 switch (cp->tag_at(cp_index).value()) { |
| 2577 case JVM_CONSTANT_Methodref: | |
| 2578 case JVM_CONSTANT_InterfaceMethodref: { | |
| 2579 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
|
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|
2580 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2581 return classname->as_utf8(); |
| 2582 } | |
| 2583 default: | |
| 2584 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
| 2585 } | |
| 2586 ShouldNotReachHere(); | |
| 2587 return NULL; | |
| 2588 JVM_END | |
| 2589 | |
| 2590 | |
| 3938 | 2591 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
| 0 | 2592 JVMWrapper("JVM_GetCPFieldModifiers"); |
|
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2593 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
|
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|
2594 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
| 0 | 2595 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 2596 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
|
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2597 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
|
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2598 ConstantPool* cp_called = InstanceKlass::cast(k_called)->constants(); |
| 0 | 2599 switch (cp->tag_at(cp_index).value()) { |
| 2600 case JVM_CONSTANT_Fieldref: { | |
|
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2601 Symbol* name = cp->uncached_name_ref_at(cp_index); |
|
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2602 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
| 3938 | 2603 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
| 2604 if (fs.name() == name && fs.signature() == signature) { | |
| 2605 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
| 0 | 2606 } |
| 2607 } | |
| 2608 return -1; | |
| 2609 } | |
| 2610 default: | |
| 2611 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
| 2612 } | |
| 2613 ShouldNotReachHere(); | |
| 2614 return 0; | |
| 2615 JVM_END | |
| 2616 | |
| 2617 | |
| 2618 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
| 2619 JVMWrapper("JVM_GetCPMethodModifiers"); | |
|
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2620 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
|
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|
2621 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
| 0 | 2622 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 2623 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
|
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|
2624 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2625 switch (cp->tag_at(cp_index).value()) { |
| 2626 case JVM_CONSTANT_Methodref: | |
| 2627 case JVM_CONSTANT_InterfaceMethodref: { | |
|
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|
2628 Symbol* name = cp->uncached_name_ref_at(cp_index); |
|
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|
2629 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
|
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changeset
|
2630 Array<Method*>* methods = InstanceKlass::cast(k_called)->methods(); |
| 0 | 2631 int methods_count = methods->length(); |
| 2632 for (int i = 0; i < methods_count; i++) { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6271
diff
changeset
|
2633 Method* method = methods->at(i); |
| 0 | 2634 if (method->name() == name && method->signature() == signature) { |
| 2635 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 2636 } | |
| 2637 } | |
| 2638 return -1; | |
| 2639 } | |
| 2640 default: | |
| 2641 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
| 2642 } | |
| 2643 ShouldNotReachHere(); | |
| 2644 return 0; | |
| 2645 JVM_END | |
| 2646 | |
| 2647 | |
| 2648 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
| 2649 | |
| 2650 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
| 2651 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
| 2652 JVM_END | |
| 2653 | |
| 2654 | |
| 2655 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
| 2656 JVMWrapper("JVM_IsSameClassPackage"); | |
| 2657 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
| 2658 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6271
diff
changeset
|
2659 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
|
2660 Klass* klass2 = java_lang_Class::as_Klass(class2_mirror); |
| 0 | 2661 return (jboolean) Reflection::is_same_class_package(klass1, klass2); |
| 2662 JVM_END | |
| 2663 | |
| 2664 | |
| 2665 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
| 2666 | |
| 2667 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
| 2668 JVMWrapper2("JVM_Open (%s)", fname); | |
| 2669 | |
| 2670 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2671 int result = os::open(fname, flags, mode); |
| 0 | 2672 if (result >= 0) { |
| 2673 return result; | |
| 2674 } else { | |
| 2675 switch(errno) { | |
| 2676 case EEXIST: | |
| 2677 return JVM_EEXIST; | |
| 2678 default: | |
| 2679 return -1; | |
| 2680 } | |
| 2681 } | |
| 2682 JVM_END | |
| 2683 | |
| 2684 | |
| 2685 JVM_LEAF(jint, JVM_Close(jint fd)) | |
| 2686 JVMWrapper2("JVM_Close (0x%x)", fd); | |
| 2687 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2688 return os::close(fd); |
| 0 | 2689 JVM_END |
| 2690 | |
| 2691 | |
| 2692 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
| 2693 JVMWrapper2("JVM_Read (0x%x)", fd); | |
| 2694 | |
| 2695 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2696 return (jint)os::restartable_read(fd, buf, nbytes); |
| 0 | 2697 JVM_END |
| 2698 | |
| 2699 | |
| 2700 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
| 2701 JVMWrapper2("JVM_Write (0x%x)", fd); | |
| 2702 | |
| 2703 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2704 return (jint)os::write(fd, buf, nbytes); |
| 0 | 2705 JVM_END |
| 2706 | |
| 2707 | |
| 2708 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
| 2709 JVMWrapper2("JVM_Available (0x%x)", fd); | |
| 2710 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2711 return os::available(fd, pbytes); |
| 0 | 2712 JVM_END |
| 2713 | |
| 2714 | |
| 2715 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
| 2716 JVMWrapper4("JVM_Lseek (0x%x, %Ld, %d)", fd, offset, whence); | |
| 2717 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2718 return os::lseek(fd, offset, whence); |
| 0 | 2719 JVM_END |
| 2720 | |
| 2721 | |
| 2722 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
| 2723 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
|
2724 return os::ftruncate(fd, length); |
| 0 | 2725 JVM_END |
| 2726 | |
| 2727 | |
| 2728 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
| 2729 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
| 2730 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2731 return os::fsync(fd); |
| 0 | 2732 JVM_END |
| 2733 | |
| 2734 | |
| 2735 // Printing support ////////////////////////////////////////////////// | |
| 2736 extern "C" { | |
| 2737 | |
| 2738 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { | |
| 2739 // see bug 4399518, 4417214 | |
| 2740 if ((intptr_t)count <= 0) return -1; | |
| 2741 return vsnprintf(str, count, fmt, args); | |
| 2742 } | |
| 2743 | |
| 2744 | |
| 2745 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { | |
| 2746 va_list args; | |
| 2747 int len; | |
| 2748 va_start(args, fmt); | |
| 2749 len = jio_vsnprintf(str, count, fmt, args); | |
| 2750 va_end(args); | |
| 2751 return len; | |
| 2752 } | |
| 2753 | |
| 2754 | |
| 2755 int jio_fprintf(FILE* f, const char *fmt, ...) { | |
| 2756 int len; | |
| 2757 va_list args; | |
| 2758 va_start(args, fmt); | |
| 2759 len = jio_vfprintf(f, fmt, args); | |
| 2760 va_end(args); | |
| 2761 return len; | |
| 2762 } | |
| 2763 | |
| 2764 | |
| 2765 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { | |
| 2766 if (Arguments::vfprintf_hook() != NULL) { | |
| 2767 return Arguments::vfprintf_hook()(f, fmt, args); | |
| 2768 } else { | |
| 2769 return vfprintf(f, fmt, args); | |
| 2770 } | |
| 2771 } | |
| 2772 | |
| 2773 | |
| 2191 | 2774 JNIEXPORT int jio_printf(const char *fmt, ...) { |
| 0 | 2775 int len; |
| 2776 va_list args; | |
| 2777 va_start(args, fmt); | |
| 2778 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
| 2779 va_end(args); | |
| 2780 return len; | |
| 2781 } | |
| 2782 | |
| 2783 | |
| 2784 // HotSpot specific jio method | |
| 2785 void jio_print(const char* s) { | |
| 2786 // Try to make this function as atomic as possible. | |
| 2787 if (Arguments::vfprintf_hook() != NULL) { | |
| 2788 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
| 2789 } else { | |
|
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
431
diff
changeset
|
2790 // 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
|
2791 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
| 0 | 2792 } |
| 2793 } | |
| 2794 | |
| 2795 } // Extern C | |
| 2796 | |
| 2797 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
| 2798 | |
| 2799 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
| 2800 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
| 2801 // OSThread objects. The exception to this rule is when the target object is the thread | |
| 2802 // doing the operation, in which case we know that the thread won't exit until the | |
| 2803 // operation is done (all exits being voluntary). There are a few cases where it is | |
| 2804 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
| 2805 // you are alive. While these can still happen, they are not subject to deadlocks if | |
| 2806 // the lock is held while the operation occurs (this is not the case for suspend, for | |
| 2807 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
| 2808 // implementation is local to this file, we always lock Threads_lock for that one. | |
| 2809 | |
| 2810 static void thread_entry(JavaThread* thread, TRAPS) { | |
| 2811 HandleMark hm(THREAD); | |
| 2812 Handle obj(THREAD, thread->threadObj()); | |
| 2813 JavaValue result(T_VOID); | |
| 2814 JavaCalls::call_virtual(&result, | |
| 2815 obj, | |
| 1142 | 2816 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
2817 vmSymbols::run_method_name(), |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
2818 vmSymbols::void_method_signature(), |
| 0 | 2819 THREAD); |
| 2820 } | |
| 2821 | |
| 2822 | |
| 2823 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
| 2824 JVMWrapper("JVM_StartThread"); | |
| 2825 JavaThread *native_thread = NULL; | |
| 2826 | |
| 2827 // We cannot hold the Threads_lock when we throw an exception, | |
| 2828 // due to rank ordering issues. Example: we might need to grab the | |
| 2829 // Heap_lock while we construct the exception. | |
| 2830 bool throw_illegal_thread_state = false; | |
| 2831 | |
| 2832 // We must release the Threads_lock before we can post a jvmti event | |
| 2833 // in Thread::start. | |
| 2834 { | |
| 2835 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
| 2836 // we operate. | |
| 2837 MutexLocker mu(Threads_lock); | |
| 2838 | |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2839 // 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
|
2840 // 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
|
2841 // 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
|
2842 // 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
|
2843 // (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
|
2844 // 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
|
2845 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
|
2846 throw_illegal_thread_state = true; |
| 0 | 2847 } else { |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2848 // 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
|
2849 // 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
|
2850 |
| 0 | 2851 jlong size = |
| 2852 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
| 2853 // Allocate the C++ Thread structure and create the native thread. The | |
| 2854 // stack size retrieved from java is signed, but the constructor takes | |
| 2855 // size_t (an unsigned type), so avoid passing negative values which would | |
| 2856 // result in really large stacks. | |
| 2857 size_t sz = size > 0 ? (size_t) size : 0; | |
| 2858 native_thread = new JavaThread(&thread_entry, sz); | |
| 2859 | |
| 2860 // At this point it may be possible that no osthread was created for the | |
| 2861 // JavaThread due to lack of memory. Check for this situation and throw | |
| 2862 // an exception if necessary. Eventually we may want to change this so | |
| 2863 // that we only grab the lock if the thread was created successfully - | |
| 2864 // then we can also do this check and throw the exception in the | |
| 2865 // JavaThread constructor. | |
| 2866 if (native_thread->osthread() != NULL) { | |
| 2867 // Note: the current thread is not being used within "prepare". | |
| 2868 native_thread->prepare(jthread); | |
| 2869 } | |
| 2870 } | |
| 2871 } | |
| 2872 | |
| 2873 if (throw_illegal_thread_state) { | |
| 2874 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
| 2875 } | |
| 2876 | |
| 2877 assert(native_thread != NULL, "Starting null thread?"); | |
| 2878 | |
| 2879 if (native_thread->osthread() == NULL) { | |
| 2880 // No one should hold a reference to the 'native_thread'. | |
| 2881 delete native_thread; | |
| 2882 if (JvmtiExport::should_post_resource_exhausted()) { | |
| 2883 JvmtiExport::post_resource_exhausted( | |
| 2884 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
|
14341
ad3f8397fe37
7182040: volano29 limited by os resource on Linux - need better diagnostic message
iklam
parents:
14178
diff
changeset
|
2885 os::native_thread_creation_failed_msg()); |
| 0 | 2886 } |
| 2887 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
|
14341
ad3f8397fe37
7182040: volano29 limited by os resource on Linux - need better diagnostic message
iklam
parents:
14178
diff
changeset
|
2888 os::native_thread_creation_failed_msg()); |
| 0 | 2889 } |
| 2890 | |
| 2891 Thread::start(native_thread); | |
| 2892 | |
| 2893 JVM_END | |
| 2894 | |
| 2895 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
| 2896 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
| 2897 // 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
|
2898 // same thread as the sender, no safepoint is needed. |
| 0 | 2899 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
| 2900 JVMWrapper("JVM_StopThread"); | |
| 2901 | |
| 2902 oop java_throwable = JNIHandles::resolve(throwable); | |
| 2903 if (java_throwable == NULL) { | |
| 2904 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 2905 } | |
| 2906 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2907 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
|
2908 Events::log_exception(JavaThread::current(), |
|
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4717
diff
changeset
|
2909 "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
|
2910 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
|
2911 // First check if thread is alive |
| 0 | 2912 if (receiver != NULL) { |
| 2913 // Check if exception is getting thrown at self (use oop equality, since the | |
| 2914 // target object might exit) | |
| 2915 if (java_thread == thread->threadObj()) { | |
| 2916 THROW_OOP(java_throwable); | |
| 2917 } else { | |
| 2918 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
| 2919 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
| 2920 } | |
| 2921 } | |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2922 else { |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2923 // Either: |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2924 // - 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
|
2925 // - 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
|
2926 // 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
|
2927 // 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
|
2928 // 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
|
2929 // 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
|
2930 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
|
2931 } |
| 0 | 2932 JVM_END |
| 2933 | |
| 2934 | |
| 2935 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
| 2936 JVMWrapper("JVM_IsThreadAlive"); | |
| 2937 | |
| 2938 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
| 2939 return java_lang_Thread::is_alive(thread_oop); | |
| 2940 JVM_END | |
| 2941 | |
| 2942 | |
| 2943 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
| 2944 JVMWrapper("JVM_SuspendThread"); | |
| 2945 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2946 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
| 2947 | |
| 2948 if (receiver != NULL) { | |
| 2949 // thread has run and has not exited (still on threads list) | |
| 2950 | |
| 2951 { | |
| 2952 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
| 2953 if (receiver->is_external_suspend()) { | |
| 2954 // Don't allow nested external suspend requests. We can't return | |
| 2955 // an error from this interface so just ignore the problem. | |
| 2956 return; | |
| 2957 } | |
| 2958 if (receiver->is_exiting()) { // thread is in the process of exiting | |
| 2959 return; | |
| 2960 } | |
| 2961 receiver->set_external_suspend(); | |
| 2962 } | |
| 2963 | |
| 2964 // java_suspend() will catch threads in the process of exiting | |
| 2965 // and will ignore them. | |
| 2966 receiver->java_suspend(); | |
| 2967 | |
| 2968 // It would be nice to have the following assertion in all the | |
| 2969 // time, but it is possible for a racing resume request to have | |
| 2970 // resumed this thread right after we suspended it. Temporarily | |
| 2971 // enable this assertion if you are chasing a different kind of | |
| 2972 // bug. | |
| 2973 // | |
| 2974 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
| 2975 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
| 2976 } | |
| 2977 JVM_END | |
| 2978 | |
| 2979 | |
| 2980 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
| 2981 JVMWrapper("JVM_ResumeThread"); | |
| 2982 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
| 2983 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
| 2984 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
| 2985 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
| 2986 // looks at it. | |
| 2987 MutexLocker ml(Threads_lock); | |
| 2988 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 2989 if (thr != NULL) { | |
| 2990 // the thread has run and is not in the process of exiting | |
| 2991 thr->java_resume(); | |
| 2992 } | |
| 2993 JVM_END | |
| 2994 | |
| 2995 | |
| 2996 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
| 2997 JVMWrapper("JVM_SetThreadPriority"); | |
| 2998 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 2999 MutexLocker ml(Threads_lock); | |
| 3000 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3001 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
| 3002 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 3003 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
| 3004 Thread::set_priority(thr, (ThreadPriority)prio); | |
| 3005 } | |
| 3006 JVM_END | |
| 3007 | |
| 3008 | |
| 3009 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
| 3010 JVMWrapper("JVM_Yield"); | |
| 3011 if (os::dont_yield()) return; | |
| 4006 | 3012 HOTSPOT_THREAD_YIELD(); |
| 14380 | 3013 |
| 0 | 3014 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
| 3015 // Critical for similar threading behaviour | |
| 3016 if (ConvertYieldToSleep) { | |
| 3017 os::sleep(thread, MinSleepInterval, false); | |
| 3018 } else { | |
| 3019 os::yield(); | |
| 3020 } | |
| 3021 JVM_END | |
| 3022 | |
| 3023 | |
| 3024 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
| 3025 JVMWrapper("JVM_Sleep"); | |
| 3026 | |
| 3027 if (millis < 0) { | |
| 3028 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
| 3029 } | |
| 3030 | |
| 3031 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
| 3032 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 3033 } | |
| 3034 | |
| 3035 // Save current thread state and restore it at the end of this block. | |
| 3036 // And set new thread state to SLEEPING. | |
| 3037 JavaThreadSleepState jtss(thread); | |
| 3038 | |
| 14380 | 3039 HOTSPOT_THREAD_SLEEP_BEGIN(millis); |
|
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1144
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|
3040 |
| 10405 | 3041 EventThreadSleep event; |
| 3042 | |
| 0 | 3043 if (millis == 0) { |
| 3044 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
| 3045 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
| 3046 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
| 3047 // for SOLARIS | |
| 3048 if (ConvertSleepToYield) { | |
| 3049 os::yield(); | |
| 3050 } else { | |
| 3051 ThreadState old_state = thread->osthread()->get_state(); | |
| 3052 thread->osthread()->set_state(SLEEPING); | |
| 3053 os::sleep(thread, MinSleepInterval, false); | |
| 3054 thread->osthread()->set_state(old_state); | |
| 3055 } | |
| 3056 } else { | |
| 3057 ThreadState old_state = thread->osthread()->get_state(); | |
| 3058 thread->osthread()->set_state(SLEEPING); | |
| 3059 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
| 3060 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
| 3061 // us while we were sleeping. We do not overwrite those. | |
| 3062 if (!HAS_PENDING_EXCEPTION) { | |
| 10405 | 3063 if (event.should_commit()) { |
| 3064 event.set_time(millis); | |
| 3065 event.commit(); | |
| 3066 } | |
| 14380 | 3067 HOTSPOT_THREAD_SLEEP_END(1); |
| 3068 | |
| 0 | 3069 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
| 3070 // to properly restore the thread state. That's likely wrong. | |
| 3071 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 3072 } | |
| 3073 } | |
| 3074 thread->osthread()->set_state(old_state); | |
| 3075 } | |
| 10405 | 3076 if (event.should_commit()) { |
| 3077 event.set_time(millis); | |
| 3078 event.commit(); | |
| 3079 } | |
| 14380 | 3080 HOTSPOT_THREAD_SLEEP_END(0); |
| 0 | 3081 JVM_END |
| 3082 | |
| 3083 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
| 3084 JVMWrapper("JVM_CurrentThread"); | |
| 3085 oop jthread = thread->threadObj(); | |
| 3086 assert (thread != NULL, "no current thread!"); | |
| 3087 return JNIHandles::make_local(env, jthread); | |
| 3088 JVM_END | |
| 3089 | |
| 3090 | |
| 3091 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
| 3092 JVMWrapper("JVM_CountStackFrames"); | |
| 3093 | |
| 3094 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3095 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3096 bool throw_illegal_thread_state = false; | |
| 3097 int count = 0; | |
| 3098 | |
| 3099 { | |
| 3100 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 3101 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 3102 // acquire of the lock | |
| 3103 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3104 | |
| 3105 if (thr == NULL) { | |
| 3106 // do nothing | |
| 3107 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
| 3108 // Check whether this java thread has been suspended already. If not, throws | |
| 3109 // IllegalThreadStateException. We defer to throw that exception until | |
| 3110 // Threads_lock is released since loading exception class has to leave VM. | |
| 3111 // The correct way to test a thread is actually suspended is | |
| 3112 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
| 3113 // the Threads_lock. The above tests are sufficient for our purposes | |
| 3114 // provided the walkability of the stack is stable - which it isn't | |
| 3115 // 100% but close enough for most practical purposes. | |
| 3116 throw_illegal_thread_state = true; | |
| 3117 } else { | |
| 3118 // Count all java activation, i.e., number of vframes | |
| 3119 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
| 3120 // Native frames are not counted | |
| 3121 if (!vfst.method()->is_native()) count++; | |
| 3122 } | |
| 3123 } | |
| 3124 } | |
| 3125 | |
| 3126 if (throw_illegal_thread_state) { | |
| 3127 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
| 3128 "this thread is not suspended"); | |
| 3129 } | |
| 3130 return count; | |
| 3131 JVM_END | |
| 3132 | |
| 3133 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
| 3134 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
| 3135 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
| 3136 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
| 3137 // outside the critical section. Threads_lock is hot so we want to minimize | |
| 3138 // the hold-time. A cleaner interface would be to decompose interrupt into | |
| 3139 // two steps. The 1st phase, performed under Threads_lock, would return | |
| 3140 // a closure that'd be invoked after Threads_lock was dropped. | |
| 3141 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
| 3142 // admit spurious wakeups. | |
| 3143 | |
| 3144 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
| 3145 JVMWrapper("JVM_Interrupt"); | |
| 3146 | |
| 3147 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3148 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3149 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 3150 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 3151 // acquire of the lock | |
| 3152 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3153 if (thr != NULL) { | |
| 3154 Thread::interrupt(thr); | |
| 3155 } | |
| 3156 JVM_END | |
| 3157 | |
| 3158 | |
| 3159 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
| 3160 JVMWrapper("JVM_IsInterrupted"); | |
| 3161 | |
| 3162 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3163 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3164 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 3165 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 3166 // acquire of the lock | |
| 3167 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3168 if (thr == NULL) { | |
| 3169 return JNI_FALSE; | |
| 3170 } else { | |
| 3171 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
| 3172 } | |
| 3173 JVM_END | |
| 3174 | |
| 3175 | |
| 3176 // Return true iff the current thread has locked the object passed in | |
| 3177 | |
| 3178 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
| 3179 JVMWrapper("JVM_HoldsLock"); | |
| 3180 assert(THREAD->is_Java_thread(), "sanity check"); | |
| 3181 if (obj == NULL) { | |
| 3182 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
| 3183 } | |
| 3184 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
| 3185 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
| 3186 JVM_END | |
| 3187 | |
| 3188 | |
| 3189 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
| 3190 JVMWrapper("JVM_DumpAllStacks"); | |
| 3191 VM_PrintThreads op; | |
| 3192 VMThread::execute(&op); | |
| 3193 if (JvmtiExport::should_post_data_dump()) { | |
| 3194 JvmtiExport::post_data_dump(); | |
| 3195 } | |
| 3196 JVM_END | |
| 3197 | |
| 4006 | 3198 JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name)) |
| 3199 JVMWrapper("JVM_SetNativeThreadName"); | |
| 3200 ResourceMark rm(THREAD); | |
| 3201 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3202 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 3203 // Thread naming only supported for the current thread, doesn't work for | |
| 3204 // target threads. | |
| 3205 if (Thread::current() == thr && !thr->has_attached_via_jni()) { | |
| 3206 // we don't set the name of an attached thread to avoid stepping | |
| 3207 // on other programs | |
| 3208 const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
| 3209 os::set_native_thread_name(thread_name); | |
| 3210 } | |
| 3211 JVM_END | |
| 0 | 3212 |
| 3213 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
| 3214 | |
| 3215 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
| 3216 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
| 3217 if (jthread->privileged_stack_top() == NULL) return false; | |
| 3218 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
| 3219 oop loader = jthread->privileged_stack_top()->class_loader(); | |
| 3220 if (loader == NULL) return true; | |
| 3221 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
| 3222 if (trusted) return true; | |
| 3223 } | |
| 3224 return false; | |
| 3225 } | |
| 3226 | |
| 3227 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
| 3228 JVMWrapper("JVM_CurrentLoadedClass"); | |
| 3229 ResourceMark rm(THREAD); | |
| 3230 | |
| 3231 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3232 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3233 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3234 if (trusted) return NULL; | |
| 3235 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6271
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|
3236 Method* m = vfst.method(); |
| 0 | 3237 if (!m->is_native()) { |
|
6940
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8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
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6831
diff
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|
3238 InstanceKlass* holder = m->method_holder(); |
|
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
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6831
diff
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|
3239 oop loader = holder->class_loader(); |
| 0 | 3240 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
|
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
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6831
diff
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|
3241 return (jclass) JNIHandles::make_local(env, holder->java_mirror()); |
| 0 | 3242 } |
| 3243 } | |
| 3244 } | |
| 3245 return NULL; | |
| 3246 JVM_END | |
| 3247 | |
| 3248 | |
| 3249 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
| 3250 JVMWrapper("JVM_CurrentClassLoader"); | |
| 3251 ResourceMark rm(THREAD); | |
| 3252 | |
| 3253 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3254 | |
| 3255 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3256 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3257 if (trusted) return NULL; | |
| 3258 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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changeset
|
3259 Method* m = vfst.method(); |
| 0 | 3260 if (!m->is_native()) { |
|
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
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6831
diff
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|
3261 InstanceKlass* holder = m->method_holder(); |
| 0 | 3262 assert(holder->is_klass(), "just checking"); |
|
6940
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diff
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|
3263 oop loader = holder->class_loader(); |
| 0 | 3264 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
| 3265 return JNIHandles::make_local(env, loader); | |
| 3266 } | |
| 3267 } | |
| 3268 } | |
| 3269 return NULL; | |
| 3270 JVM_END | |
| 3271 | |
| 3272 | |
| 3273 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
| 3274 JVMWrapper("JVM_GetClassContext"); | |
| 3275 ResourceMark rm(THREAD); | |
| 3276 JvmtiVMObjectAllocEventCollector oam; | |
|
8866
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|
3277 vframeStream vfst(thread); |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
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|
3278 |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3279 if (SystemDictionary::reflect_CallerSensitive_klass() != NULL) { |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3280 // This must only be called from SecurityManager.getClassContext |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
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|
3281 Method* m = vfst.method(); |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
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|
3282 if (!(m->method_holder() == SystemDictionary::SecurityManager_klass() && |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
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|
3283 m->name() == vmSymbols::getClassContext_name() && |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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8031
diff
changeset
|
3284 m->signature() == vmSymbols::void_class_array_signature())) { |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
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8031
diff
changeset
|
3285 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetClassContext must only be called from SecurityManager.getClassContext"); |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3286 } |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3287 } |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3288 |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
3289 // Collect method holders |
|
11001
c52abc8a0b08
8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
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10343
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|
3290 GrowableArray<KlassHandle>* klass_array = new GrowableArray<KlassHandle>(); |
|
8866
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|
3291 for (; !vfst.at_end(); vfst.security_next()) { |
|
16885e702c88
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|
3292 Method* m = vfst.method(); |
| 0 | 3293 // Native frames are not returned |
|
8866
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diff
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|
3294 if (!m->is_ignored_by_security_stack_walk() && !m->is_native()) { |
|
16885e702c88
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|
3295 Klass* holder = m->method_holder(); |
| 0 | 3296 assert(holder->is_klass(), "just checking"); |
|
11001
c52abc8a0b08
8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
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10343
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|
3297 klass_array->append(holder); |
| 0 | 3298 } |
| 3299 } | |
| 3300 | |
| 3301 // Create result array of type [Ljava/lang/Class; | |
|
11001
c52abc8a0b08
8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
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|
3302 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), klass_array->length(), CHECK_NULL); |
| 0 | 3303 // Fill in mirrors corresponding to method holders |
|
11001
c52abc8a0b08
8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
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10343
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|
3304 for (int i = 0; i < klass_array->length(); i++) { |
|
c52abc8a0b08
8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
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|
3305 result->obj_at_put(i, klass_array->at(i)->java_mirror()); |
| 0 | 3306 } |
| 3307 | |
| 3308 return (jobjectArray) JNIHandles::make_local(env, result); | |
| 3309 JVM_END | |
| 3310 | |
| 3311 | |
| 3312 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
| 3313 JVMWrapper("JVM_ClassDepth"); | |
| 3314 ResourceMark rm(THREAD); | |
| 3315 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 3316 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
| 3317 | |
| 3318 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2162
diff
changeset
|
3319 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2162
diff
changeset
|
3320 if (class_name_sym == NULL) { |
| 0 | 3321 return -1; |
| 3322 } | |
| 3323 | |
| 3324 int depth = 0; | |
| 3325 | |
| 3326 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3327 if (!vfst.method()->is_native()) { | |
|
6940
18fb7da42534
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coleenp
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6831
diff
changeset
|
3328 InstanceKlass* holder = vfst.method()->method_holder(); |
| 0 | 3329 assert(holder->is_klass(), "just checking"); |
|
6940
18fb7da42534
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coleenp
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6831
diff
changeset
|
3330 if (holder->name() == class_name_sym) { |
| 0 | 3331 return depth; |
| 3332 } | |
| 3333 depth++; | |
| 3334 } | |
| 3335 } | |
| 3336 return -1; | |
| 3337 JVM_END | |
| 3338 | |
| 3339 | |
| 3340 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
| 3341 JVMWrapper("JVM_ClassLoaderDepth"); | |
| 3342 ResourceMark rm(THREAD); | |
| 3343 int depth = 0; | |
| 3344 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3345 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
| 3346 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3347 if (trusted) return -1; | |
| 3348 | |
|
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|
3349 Method* m = vfst.method(); |
| 0 | 3350 if (!m->is_native()) { |
|
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diff
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|
3351 InstanceKlass* holder = m->method_holder(); |
| 0 | 3352 assert(holder->is_klass(), "just checking"); |
|
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diff
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|
3353 oop loader = holder->class_loader(); |
| 0 | 3354 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
| 3355 return depth; | |
| 3356 } | |
| 3357 depth++; | |
| 3358 } | |
| 3359 } | |
| 3360 return -1; | |
| 3361 JVM_END | |
| 3362 | |
| 3363 | |
| 3364 // java.lang.Package //////////////////////////////////////////////////////////////// | |
| 3365 | |
| 3366 | |
| 3367 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
| 3368 JVMWrapper("JVM_GetSystemPackage"); | |
| 3369 ResourceMark rm(THREAD); | |
| 3370 JvmtiVMObjectAllocEventCollector oam; | |
| 3371 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
| 3372 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
| 3373 return (jstring) JNIHandles::make_local(result); | |
| 3374 JVM_END | |
| 3375 | |
| 3376 | |
| 3377 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
| 3378 JVMWrapper("JVM_GetSystemPackages"); | |
| 3379 JvmtiVMObjectAllocEventCollector oam; | |
| 3380 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
| 3381 return (jobjectArray) JNIHandles::make_local(result); | |
| 3382 JVM_END | |
| 3383 | |
| 3384 | |
| 3385 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
| 3386 | |
|
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|
3387 bool force_verify_field_access(Klass* current_class, Klass* field_class, AccessFlags access, bool classloader_only) { |
| 0 | 3388 if (current_class == NULL) { |
| 3389 return true; | |
| 3390 } | |
| 3391 if ((current_class == field_class) || access.is_public()) { | |
| 3392 return true; | |
| 3393 } | |
| 3394 | |
| 3395 if (access.is_protected()) { | |
| 3396 // See if current_class is a subclass of field_class | |
| 6983 | 3397 if (current_class->is_subclass_of(field_class)) { |
| 0 | 3398 return true; |
| 3399 } | |
| 3400 } | |
| 3401 | |
|
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|
3402 return (!access.is_private() && InstanceKlass::cast(current_class)->is_same_class_package(field_class)); |
| 0 | 3403 } |
| 3404 | |
| 3405 | |
| 3406 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
| 3407 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
| 3408 JVMWrapper("JVM_AllocateNewObject"); | |
| 3409 JvmtiVMObjectAllocEventCollector oam; | |
| 3410 // Receiver is not used | |
| 3411 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
| 3412 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
| 3413 | |
| 3414 // Cannot instantiate primitive types | |
| 3415 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
| 3416 ResourceMark rm(THREAD); | |
| 3417 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3418 } | |
| 3419 | |
| 3420 // Arrays not allowed here, must use JVM_AllocateNewArray | |
| 6983 | 3421 if (java_lang_Class::as_Klass(curr_mirror)->oop_is_array() || |
| 3422 java_lang_Class::as_Klass(init_mirror)->oop_is_array()) { | |
| 0 | 3423 ResourceMark rm(THREAD); |
| 3424 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3425 } | |
| 3426 | |
|
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|
3427 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_Klass(curr_mirror)); |
|
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diff
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|
3428 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_Klass(init_mirror)); |
| 0 | 3429 |
| 3430 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
| 3431 | |
| 3432 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
| 3433 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
| 3434 | |
| 3435 // Make sure klass is initialized, since we are about to instantiate one of them. | |
| 3436 curr_klass->initialize(CHECK_NULL); | |
| 3437 | |
| 3438 methodHandle m (THREAD, | |
| 3439 init_klass->find_method(vmSymbols::object_initializer_name(), | |
| 3440 vmSymbols::void_method_signature())); | |
| 3441 if (m.is_null()) { | |
| 3442 ResourceMark rm(THREAD); | |
| 3443 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
| 6983 | 3444 Method::name_and_sig_as_C_string(init_klass(), |
| 0 | 3445 vmSymbols::object_initializer_name(), |
| 3446 vmSymbols::void_method_signature())); | |
| 3447 } | |
| 3448 | |
| 3449 if (curr_klass == init_klass && !m->is_public()) { | |
| 3450 // Calling the constructor for class 'curr_klass'. | |
| 3451 // Only allow calls to a public no-arg constructor. | |
| 3452 // This path corresponds to creating an Externalizable object. | |
| 3453 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3454 } | |
| 3455 | |
| 3456 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
| 3457 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
| 3458 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3459 } | |
| 3460 | |
| 3461 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
| 3462 // Call constructor m. This might call a constructor higher up in the hierachy | |
| 3463 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
| 3464 | |
| 3465 return JNIHandles::make_local(obj()); | |
| 3466 JVM_END | |
| 3467 | |
| 3468 | |
| 3469 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
| 3470 JVMWrapper("JVM_AllocateNewArray"); | |
| 3471 JvmtiVMObjectAllocEventCollector oam; | |
| 3472 oop mirror = JNIHandles::resolve_non_null(currClass); | |
| 3473 | |
| 3474 if (java_lang_Class::is_primitive(mirror)) { | |
| 3475 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3476 } | |
|
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diff
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|
3477 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 3478 oop result; |
| 3479 | |
|
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|
3480 if (k->oop_is_typeArray()) { |
| 0 | 3481 // typeArray |
|
6831
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8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
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6725
diff
changeset
|
3482 result = TypeArrayKlass::cast(k)->allocate(length, CHECK_NULL); |
|
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diff
changeset
|
3483 } else if (k->oop_is_objArray()) { |
| 0 | 3484 // objArray |
|
6831
d8ce2825b193
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coleenp
parents:
6725
diff
changeset
|
3485 ObjArrayKlass* oak = ObjArrayKlass::cast(k); |
| 0 | 3486 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) |
| 3487 result = oak->allocate(length, CHECK_NULL); | |
| 3488 } else { | |
| 3489 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3490 } | |
| 3491 return JNIHandles::make_local(env, result); | |
| 3492 JVM_END | |
| 3493 | |
| 3494 | |
| 3495 // Return the first non-null class loader up the execution stack, or null | |
| 3496 // if only code from the null class loader is on the stack. | |
| 3497 | |
| 3498 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
| 3499 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3500 // UseNewReflection | |
| 3501 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
|
6940
18fb7da42534
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coleenp
parents:
6831
diff
changeset
|
3502 oop loader = vfst.method()->method_holder()->class_loader(); |
| 0 | 3503 if (loader != NULL) { |
| 3504 return JNIHandles::make_local(env, loader); | |
| 3505 } | |
| 3506 } | |
| 3507 return NULL; | |
| 3508 JVM_END | |
| 3509 | |
| 3510 | |
| 3511 // Load a class relative to the most recent class on the stack with a non-null | |
| 3512 // classloader. | |
| 3513 // This function has been deprecated and should not be considered part of the | |
| 3514 // specified JVM interface. | |
| 3515 | |
| 3516 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
| 3517 jclass currClass, jstring currClassName)) | |
| 3518 JVMWrapper("JVM_LoadClass0"); | |
| 3519 // Receiver is not used | |
| 3520 ResourceMark rm(THREAD); | |
| 3521 | |
| 3522 // Class name argument is not guaranteed to be in internal format | |
| 3523 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
| 3524 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
| 3525 | |
| 3526 const char* str = java_lang_String::as_utf8_string(string()); | |
| 3527 | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
3528 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
| 0 | 3529 // It's impossible to create this class; the name cannot fit |
| 3530 // into the constant pool. | |
| 3531 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
| 3532 } | |
| 3533 | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2162
diff
changeset
|
3534 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
| 0 | 3535 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
| 3536 // Find the most recent class on the stack with a non-null classloader | |
| 3537 oop loader = NULL; | |
| 3538 oop protection_domain = NULL; | |
| 3539 if (curr_klass.is_null()) { | |
| 3540 for (vframeStream vfst(thread); | |
| 3541 !vfst.at_end() && loader == NULL; | |
| 3542 vfst.next()) { | |
| 3543 if (!vfst.method()->is_native()) { | |
|
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
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6831
diff
changeset
|
3544 InstanceKlass* holder = vfst.method()->method_holder(); |
|
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
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6831
diff
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|
3545 loader = holder->class_loader(); |
|
18fb7da42534
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coleenp
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6831
diff
changeset
|
3546 protection_domain = holder->protection_domain(); |
| 0 | 3547 } |
| 3548 } | |
| 3549 } else { | |
|
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diff
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|
3550 Klass* curr_klass_oop = java_lang_Class::as_Klass(curr_klass()); |
|
da91efe96a93
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|
3551 loader = InstanceKlass::cast(curr_klass_oop)->class_loader(); |
|
da91efe96a93
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|
3552 protection_domain = InstanceKlass::cast(curr_klass_oop)->protection_domain(); |
| 0 | 3553 } |
| 3554 Handle h_loader(THREAD, loader); | |
| 3555 Handle h_prot (THREAD, protection_domain); | |
|
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3556 jclass result = find_class_from_class_loader(env, name, true, h_loader, h_prot, |
|
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3557 false, thread); |
|
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3558 if (TraceClassResolution && result != NULL) { |
|
6725
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|
3559 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
|
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3560 } |
|
715dceaa89b7
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579
diff
changeset
|
3561 return result; |
| 0 | 3562 JVM_END |
| 3563 | |
| 3564 | |
| 3565 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
| 3566 | |
| 3567 | |
| 3568 // resolve array handle and check arguments | |
| 3569 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
| 3570 if (arr == NULL) { | |
| 3571 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 3572 } | |
| 3573 oop a = JNIHandles::resolve_non_null(arr); | |
|
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|
3574 if (!a->is_array() || (type_array_only && !a->is_typeArray())) { |
| 0 | 3575 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); |
| 3576 } | |
| 3577 return arrayOop(a); | |
| 3578 } | |
| 3579 | |
| 3580 | |
| 3581 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
| 3582 JVMWrapper("JVM_GetArrayLength"); | |
| 3583 arrayOop a = check_array(env, arr, false, CHECK_0); | |
| 3584 return a->length(); | |
| 3585 JVM_END | |
| 3586 | |
| 3587 | |
| 3588 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
| 3589 JVMWrapper("JVM_Array_Get"); | |
| 3590 JvmtiVMObjectAllocEventCollector oam; | |
| 3591 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
| 3592 jvalue value; | |
| 3593 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
| 3594 oop box = Reflection::box(&value, type, CHECK_NULL); | |
| 3595 return JNIHandles::make_local(env, box); | |
| 3596 JVM_END | |
| 3597 | |
| 3598 | |
| 3599 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
| 3600 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
| 3601 jvalue value; | |
| 3602 value.i = 0; // to initialize value before getting used in CHECK | |
| 3603 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
| 3604 assert(a->is_typeArray(), "just checking"); | |
| 3605 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
| 3606 BasicType wide_type = (BasicType) wCode; | |
| 3607 if (type != wide_type) { | |
| 3608 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
| 3609 } | |
| 3610 return value; | |
| 3611 JVM_END | |
| 3612 | |
| 3613 | |
| 3614 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
| 3615 JVMWrapper("JVM_SetArrayElement"); | |
| 3616 arrayOop a = check_array(env, arr, false, CHECK); | |
| 3617 oop box = JNIHandles::resolve(val); | |
| 3618 jvalue value; | |
| 3619 value.i = 0; // to initialize value before getting used in CHECK | |
| 3620 BasicType value_type; | |
| 3621 if (a->is_objArray()) { | |
| 3622 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
| 3623 value_type = Reflection::unbox_for_regular_object(box, &value); | |
| 3624 } else { | |
| 3625 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
| 3626 } | |
| 3627 Reflection::array_set(&value, a, index, value_type, CHECK); | |
| 3628 JVM_END | |
| 3629 | |
| 3630 | |
| 3631 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
| 3632 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
| 3633 arrayOop a = check_array(env, arr, true, CHECK); | |
| 3634 assert(a->is_typeArray(), "just checking"); | |
| 3635 BasicType value_type = (BasicType) vCode; | |
| 3636 Reflection::array_set(&v, a, index, value_type, CHECK); | |
| 3637 JVM_END | |
| 3638 | |
| 3639 | |
| 3640 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
| 3641 JVMWrapper("JVM_NewArray"); | |
| 3642 JvmtiVMObjectAllocEventCollector oam; | |
| 3643 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3644 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
| 3645 return JNIHandles::make_local(env, result); | |
| 3646 JVM_END | |
| 3647 | |
| 3648 | |
| 3649 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
| 3650 JVMWrapper("JVM_NewMultiArray"); | |
| 3651 JvmtiVMObjectAllocEventCollector oam; | |
| 3652 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
| 3653 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3654 assert(dim_array->is_typeArray(), "just checking"); | |
| 3655 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
| 3656 return JNIHandles::make_local(env, result); | |
| 3657 JVM_END | |
| 3658 | |
| 3659 | |
| 3660 // Networking library support //////////////////////////////////////////////////////////////////// | |
| 3661 | |
| 3662 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
| 3663 JVMWrapper("JVM_InitializeSocketLibrary"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3664 return 0; |
| 0 | 3665 JVM_END |
| 3666 | |
| 3667 | |
| 3668 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
| 3669 JVMWrapper("JVM_Socket"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3670 return os::socket(domain, type, protocol); |
| 0 | 3671 JVM_END |
| 3672 | |
| 3673 | |
| 3674 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
| 3675 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
| 3676 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3677 return os::socket_close(fd); |
| 0 | 3678 JVM_END |
| 3679 | |
| 3680 | |
| 3681 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
| 3682 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
| 3683 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3684 return os::socket_shutdown(fd, howto); |
| 0 | 3685 JVM_END |
| 3686 | |
| 3687 | |
| 3688 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3689 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
| 3690 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3691 return os::recv(fd, buf, (size_t)nBytes, (uint)flags); |
| 0 | 3692 JVM_END |
| 3693 | |
| 3694 | |
| 3695 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3696 JVMWrapper2("JVM_Send (0x%x)", fd); | |
| 3697 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3698 return os::send(fd, buf, (size_t)nBytes, (uint)flags); |
| 0 | 3699 JVM_END |
| 3700 | |
| 3701 | |
| 3702 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
| 3703 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
| 3704 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3705 return os::timeout(fd, timeout); |
| 0 | 3706 JVM_END |
| 3707 | |
| 3708 | |
| 3709 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
| 3710 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
| 3711 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3712 return os::listen(fd, count); |
| 0 | 3713 JVM_END |
| 3714 | |
| 3715 | |
| 3716 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
| 3717 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
| 3718 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3719 return os::connect(fd, him, (socklen_t)len); |
| 0 | 3720 JVM_END |
| 3721 | |
| 3722 | |
| 3723 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
| 3724 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
| 3725 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3726 return os::bind(fd, him, (socklen_t)len); |
| 0 | 3727 JVM_END |
| 3728 | |
| 3729 | |
| 3730 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
| 3731 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
| 3732 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3733 socklen_t socklen = (socklen_t)(*len); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3734 jint result = os::accept(fd, him, &socklen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3735 *len = (jint)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3736 return result; |
| 0 | 3737 JVM_END |
| 3738 | |
| 3739 | |
| 3740 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
| 3741 JVMWrapper2("JVM_RecvFrom (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 socklen_t socklen = (socklen_t)(*fromlen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3744 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
|
3745 *fromlen = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3746 return result; |
| 0 | 3747 JVM_END |
| 3748 | |
| 3749 | |
| 3750 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
| 3751 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
| 3752 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3753 socklen_t socklen = (socklen_t)(*len); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3754 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
|
3755 *len = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3756 return result; |
| 0 | 3757 JVM_END |
| 3758 | |
| 3759 | |
| 3760 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
| 3761 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
| 3762 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3763 return os::sendto(fd, buf, (size_t)len, (uint)flags, to, (socklen_t)tolen); |
| 0 | 3764 JVM_END |
| 3765 | |
| 3766 | |
| 3767 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
| 3768 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
| 3769 //%note jvm_r6 | |
|
1980
828eafbd85cc
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parents:
1972
diff
changeset
|
3770 return os::socket_available(fd, pbytes); |
| 0 | 3771 JVM_END |
| 3772 | |
| 3773 | |
| 3774 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
| 3775 JVMWrapper2("JVM_GetSockOpt (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)(*optlen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3778 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
|
3779 *optlen = (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_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
| 3785 JVMWrapper2("JVM_GetSockOpt (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::set_sock_opt(fd, level, optname, optval, (socklen_t)optlen); |
| 0 | 3788 JVM_END |
| 3789 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3790 |
| 0 | 3791 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) |
| 3792 JVMWrapper("JVM_GetHostName"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3793 return os::get_host_name(name, namelen); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3794 JVM_END |
| 0 | 3795 |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3796 |
| 0 | 3797 // Library support /////////////////////////////////////////////////////////////////////////// |
| 3798 | |
| 3799 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
| 3800 //%note jvm_ct | |
| 3801 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
| 3802 char ebuf[1024]; | |
| 3803 void *load_result; | |
| 3804 { | |
| 3805 ThreadToNativeFromVM ttnfvm(thread); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3806 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
| 0 | 3807 } |
| 3808 if (load_result == NULL) { | |
| 3809 char msg[1024]; | |
| 3810 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
| 3811 // Since 'ebuf' may contain a string encoded using | |
| 3812 // platform encoding scheme, we need to pass | |
| 3813 // Exceptions::unsafe_to_utf8 to the new_exception method | |
| 3814 // as the last argument. See bug 6367357. | |
| 3815 Handle h_exception = | |
| 3816 Exceptions::new_exception(thread, | |
| 3817 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
| 3818 msg, Exceptions::unsafe_to_utf8); | |
| 3819 | |
| 3820 THROW_HANDLE_0(h_exception); | |
| 3821 } | |
| 3822 return load_result; | |
| 3823 JVM_END | |
| 3824 | |
| 3825 | |
| 3826 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
| 3827 JVMWrapper("JVM_UnloadLibrary"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3828 os::dll_unload(handle); |
| 0 | 3829 JVM_END |
| 3830 | |
| 3831 | |
| 3832 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
| 3833 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3834 return os::dll_lookup(handle, name); |
| 0 | 3835 JVM_END |
| 3836 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3837 |
| 0 | 3838 // Floating point support //////////////////////////////////////////////////////////////////// |
| 3839 | |
| 3840 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
| 3841 JVMWrapper("JVM_IsNaN"); | |
| 3842 return g_isnan(a); | |
| 3843 JVM_END | |
| 3844 | |
| 3845 | |
| 3846 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
| 3847 | |
| 3848 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
| 3849 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
| 3850 return Threads::is_supported_jni_version_including_1_1(version); | |
| 3851 JVM_END | |
| 3852 | |
| 3853 | |
| 3854 // String support /////////////////////////////////////////////////////////////////////////// | |
| 3855 | |
| 3856 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
| 3857 JVMWrapper("JVM_InternString"); | |
| 3858 JvmtiVMObjectAllocEventCollector oam; | |
| 3859 if (str == NULL) return NULL; | |
| 3860 oop string = JNIHandles::resolve_non_null(str); | |
| 3861 oop result = StringTable::intern(string, CHECK_NULL); | |
| 3862 return (jstring) JNIHandles::make_local(env, result); | |
| 3863 JVM_END | |
| 3864 | |
| 3865 | |
| 3866 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
| 3867 | |
| 3868 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
| 3869 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
| 3870 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
| 3871 // that only works with java threads. | |
| 3872 | |
| 3873 | |
| 3874 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
| 3875 VM_Exit::block_if_vm_exited(); | |
| 3876 JVMWrapper("JVM_RawMonitorCreate"); | |
| 3877 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
| 3878 } | |
| 3879 | |
| 3880 | |
| 3881 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
| 3882 VM_Exit::block_if_vm_exited(); | |
| 3883 JVMWrapper("JVM_RawMonitorDestroy"); | |
| 3884 delete ((Mutex*) mon); | |
| 3885 } | |
| 3886 | |
| 3887 | |
| 3888 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
| 3889 VM_Exit::block_if_vm_exited(); | |
| 3890 JVMWrapper("JVM_RawMonitorEnter"); | |
| 3891 ((Mutex*) mon)->jvm_raw_lock(); | |
| 3892 return 0; | |
| 3893 } | |
| 3894 | |
| 3895 | |
| 3896 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
| 3897 VM_Exit::block_if_vm_exited(); | |
| 3898 JVMWrapper("JVM_RawMonitorExit"); | |
| 3899 ((Mutex*) mon)->jvm_raw_unlock(); | |
| 3900 } | |
| 3901 | |
| 3902 | |
| 3903 // Support for Serialization | |
| 3904 | |
| 3905 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
| 3906 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
| 3907 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
| 3908 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
| 3909 | |
| 3910 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
| 3911 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
| 3912 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
| 3913 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
| 3914 | |
| 3915 | |
| 3916 void initialize_converter_functions() { | |
| 3917 if (JDK_Version::is_gte_jdk14x_version()) { | |
| 3918 // These functions only exist for compatibility with 1.3.1 and earlier | |
| 3919 return; | |
| 3920 } | |
| 3921 | |
| 3922 // called from universe_post_init() | |
| 3923 assert( | |
| 3924 int_bits_to_float_fn == NULL && | |
| 3925 long_bits_to_double_fn == NULL && | |
| 3926 float_to_int_bits_fn == NULL && | |
| 3927 double_to_long_bits_fn == NULL , | |
| 3928 "initialization done twice" | |
| 3929 ); | |
| 3930 // initialize | |
| 3931 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
| 3932 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
| 3933 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
| 3934 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
| 3935 // verify | |
| 3936 assert( | |
| 3937 int_bits_to_float_fn != NULL && | |
| 3938 long_bits_to_double_fn != NULL && | |
| 3939 float_to_int_bits_fn != NULL && | |
| 3940 double_to_long_bits_fn != NULL , | |
| 3941 "initialization failed" | |
| 3942 ); | |
| 3943 } | |
| 3944 | |
| 3945 | |
| 3946 | |
| 3947 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
| 3948 | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
3949 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS) { |
| 0 | 3950 // Security Note: |
| 3951 // The Java level wrapper will perform the necessary security check allowing | |
| 3952 // us to pass the NULL as the initiating class loader. | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3953 Klass* klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); |
|
878
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
3954 |
| 0 | 3955 KlassHandle klass_handle(THREAD, klass); |
| 3956 // Check if we should initialize the class | |
| 3957 if (init && klass_handle->oop_is_instance()) { | |
| 3958 klass_handle->initialize(CHECK_NULL); | |
| 3959 } | |
| 3960 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
| 3961 } | |
| 3962 | |
| 3963 | |
| 3964 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
| 3965 | |
| 3966 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
| 3967 JVMWrapper("JVM_InvokeMethod"); | |
| 3968 Handle method_handle; | |
| 3969 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
| 3970 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
| 3971 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
| 3972 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 3973 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
| 3974 jobject res = JNIHandles::make_local(env, result); | |
| 3975 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 3976 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
| 3977 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
| 3978 if (java_lang_Class::is_primitive(ret_type)) { | |
| 3979 // Only for primitive type vm allocates memory for java object. | |
| 3980 // See box() method. | |
| 3981 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 3982 } | |
| 3983 } | |
| 3984 return res; | |
| 3985 } else { | |
| 3986 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
| 3987 } | |
| 3988 JVM_END | |
| 3989 | |
| 3990 | |
| 3991 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
| 3992 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
| 3993 oop constructor_mirror = JNIHandles::resolve(c); | |
| 3994 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 3995 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
| 3996 jobject res = JNIHandles::make_local(env, result); | |
| 3997 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 3998 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 3999 } | |
| 4000 return res; | |
| 4001 JVM_END | |
| 4002 | |
| 4003 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4004 | |
| 4005 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
| 4006 JVMWrapper("JVM_SupportsCX8"); | |
| 4007 return VM_Version::supports_cx8(); | |
| 4008 JVM_END | |
| 4009 | |
| 4010 | |
| 4011 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
| 4012 JVMWrapper("JVM_CX8Field"); | |
| 4013 jlong res; | |
| 4014 oop o = JNIHandles::resolve(obj); | |
| 4015 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 4016 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
| 4017 | |
| 4018 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
| 4019 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
| 4020 | |
| 4021 return res == oldVal; | |
| 4022 JVM_END | |
| 4023 | |
|
116
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6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
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0
diff
changeset
|
4024 // DTrace /////////////////////////////////////////////////////////////////// |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4025 |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4026 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4027 JVMWrapper("JVM_DTraceGetVersion"); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4028 return (jint)JVM_TRACING_DTRACE_VERSION; |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
4029 JVM_END |
|
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|
4030 |
|
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|
4031 JVM_ENTRY(jlong,JVM_DTraceActivate( |
|
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4032 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
|
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4033 JVM_DTraceProvider* providers)) |
|
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|
4034 JVMWrapper("JVM_DTraceActivate"); |
|
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|
4035 return DTraceJSDT::activate( |
|
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|
4036 version, module_name, providers_count, providers, CHECK_0); |
|
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|
4037 JVM_END |
|
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|
4038 |
|
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|
4039 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
|
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|
4040 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
|
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|
4041 return DTraceJSDT::is_probe_enabled(method); |
|
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4042 JVM_END |
|
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4043 |
|
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4044 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
|
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|
4045 JVMWrapper("JVM_DTraceDispose"); |
|
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|
4046 DTraceJSDT::dispose(handle); |
|
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4047 JVM_END |
|
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4048 |
|
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4049 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
|
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4050 JVMWrapper("JVM_DTraceIsSupported"); |
|
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4051 return DTraceJSDT::is_supported(); |
|
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4052 JVM_END |
|
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|
4053 |
| 0 | 4054 // Returns an array of all live Thread objects (VM internal JavaThreads, |
| 4055 // jvmti agent threads, and JNI attaching threads are skipped) | |
| 4056 // See CR 6404306 regarding JNI attaching threads | |
| 4057 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
| 4058 ResourceMark rm(THREAD); | |
| 4059 ThreadsListEnumerator tle(THREAD, false, false); | |
| 4060 JvmtiVMObjectAllocEventCollector oam; | |
| 4061 | |
| 4062 int num_threads = tle.num_threads(); | |
| 1142 | 4063 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
| 0 | 4064 objArrayHandle threads_ah(THREAD, r); |
| 4065 | |
| 4066 for (int i = 0; i < num_threads; i++) { | |
| 4067 Handle h = tle.get_threadObj(i); | |
| 4068 threads_ah->obj_at_put(i, h()); | |
| 4069 } | |
| 4070 | |
| 4071 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
| 4072 JVM_END | |
| 4073 | |
| 4074 | |
| 4075 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
| 4076 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
| 4077 // the corresponding entry in the given threads array | |
| 4078 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
| 4079 JVMWrapper("JVM_DumpThreads"); | |
| 4080 JvmtiVMObjectAllocEventCollector oam; | |
| 4081 | |
| 4082 // Check if threads is null | |
| 4083 if (threads == NULL) { | |
| 4084 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4085 } | |
| 4086 | |
| 4087 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
| 4088 objArrayHandle ah(THREAD, a); | |
| 4089 int num_threads = ah->length(); | |
| 4090 // check if threads is non-empty array | |
| 4091 if (num_threads == 0) { | |
| 4092 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
| 4093 } | |
| 4094 | |
| 4095 // check if threads is not an array of objects of Thread class | |
|
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|
4096 Klass* k = ObjArrayKlass::cast(ah->klass())->element_klass(); |
| 1142 | 4097 if (k != SystemDictionary::Thread_klass()) { |
| 0 | 4098 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
| 4099 } | |
| 4100 | |
| 4101 ResourceMark rm(THREAD); | |
| 4102 | |
| 4103 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
| 4104 for (int i = 0; i < num_threads; i++) { | |
| 4105 oop thread_obj = ah->obj_at(i); | |
| 4106 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
| 4107 thread_handle_array->append(h); | |
| 4108 } | |
| 4109 | |
| 4110 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
| 4111 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
| 4112 | |
| 4113 JVM_END | |
| 4114 | |
| 4115 // JVM monitoring and management support | |
| 4116 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
| 4117 return Management::get_jmm_interface(version); | |
| 4118 JVM_END | |
| 4119 | |
| 4120 // com.sun.tools.attach.VirtualMachine agent properties support | |
| 4121 // | |
| 4122 // Initialize the agent properties with the properties maintained in the VM | |
| 4123 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
| 4124 JVMWrapper("JVM_InitAgentProperties"); | |
| 4125 ResourceMark rm; | |
| 4126 | |
| 4127 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
| 4128 | |
| 4129 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
| 4130 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
| 4131 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
| 4132 return properties; | |
| 4133 JVM_END | |
| 4134 | |
| 4135 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
| 4136 { | |
| 4137 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
| 4138 JvmtiVMObjectAllocEventCollector oam; | |
| 4139 | |
| 4140 if (ofClass == NULL) { | |
| 4141 return NULL; | |
| 4142 } | |
| 4143 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
| 4144 // Special handling for primitive objects | |
| 4145 if (java_lang_Class::is_primitive(mirror())) { | |
| 4146 return NULL; | |
| 4147 } | |
|
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4148 Klass* k = java_lang_Class::as_Klass(mirror()); |
| 6983 | 4149 if (!k->oop_is_instance()) { |
| 0 | 4150 return NULL; |
| 4151 } | |
| 4152 instanceKlassHandle ik_h(THREAD, k); | |
| 4153 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
| 4154 if (encl_method_class_idx == 0) { | |
| 4155 return NULL; | |
| 4156 } | |
| 1142 | 4157 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
| 0 | 4158 objArrayHandle dest(THREAD, dest_o); |
|
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|
4159 Klass* enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); |
| 6983 | 4160 dest->obj_at_put(0, enc_k->java_mirror()); |
| 0 | 4161 int encl_method_method_idx = ik_h->enclosing_method_method_index(); |
| 4162 if (encl_method_method_idx != 0) { | |
|
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diff
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|
4163 Symbol* sym = ik_h->constants()->symbol_at( |
| 0 | 4164 extract_low_short_from_int( |
| 4165 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4166 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4167 dest->obj_at_put(1, str()); | |
|
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4168 sym = ik_h->constants()->symbol_at( |
| 0 | 4169 extract_high_short_from_int( |
| 4170 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4171 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4172 dest->obj_at_put(2, str()); | |
| 4173 } | |
| 4174 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 4175 } | |
| 4176 JVM_END | |
| 4177 | |
| 4178 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
| 4179 jint javaThreadState)) | |
| 4180 { | |
| 4181 // If new thread states are added in future JDK and VM versions, | |
| 4182 // this should check if the JDK version is compatible with thread | |
| 4183 // states supported by the VM. Return NULL if not compatible. | |
| 4184 // | |
| 4185 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4186 // to the Java thread state that the JDK supports. | |
| 4187 // | |
| 4188 | |
| 4189 typeArrayHandle values_h; | |
| 4190 switch (javaThreadState) { | |
| 4191 case JAVA_THREAD_STATE_NEW : { | |
| 4192 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4193 values_h = typeArrayHandle(THREAD, r); | |
| 4194 values_h->int_at_put(0, java_lang_Thread::NEW); | |
| 4195 break; | |
| 4196 } | |
| 4197 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4198 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4199 values_h = typeArrayHandle(THREAD, r); | |
| 4200 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
| 4201 break; | |
| 4202 } | |
| 4203 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4204 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4205 values_h = typeArrayHandle(THREAD, r); | |
| 4206 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
| 4207 break; | |
| 4208 } | |
| 4209 case JAVA_THREAD_STATE_WAITING : { | |
| 4210 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
| 4211 values_h = typeArrayHandle(THREAD, r); | |
| 4212 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
| 4213 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
| 4214 break; | |
| 4215 } | |
| 4216 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4217 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
| 4218 values_h = typeArrayHandle(THREAD, r); | |
| 4219 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
| 4220 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
| 4221 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
| 4222 break; | |
| 4223 } | |
| 4224 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4225 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4226 values_h = typeArrayHandle(THREAD, r); | |
| 4227 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
| 4228 break; | |
| 4229 } | |
| 4230 default: | |
| 4231 // Unknown state - probably incompatible JDK version | |
| 4232 return NULL; | |
| 4233 } | |
| 4234 | |
| 4235 return (jintArray) JNIHandles::make_local(env, values_h()); | |
| 4236 } | |
| 4237 JVM_END | |
| 4238 | |
| 4239 | |
| 4240 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
| 4241 jint javaThreadState, | |
| 4242 jintArray values)) | |
| 4243 { | |
| 4244 // If new thread states are added in future JDK and VM versions, | |
| 4245 // this should check if the JDK version is compatible with thread | |
| 4246 // states supported by the VM. Return NULL if not compatible. | |
| 4247 // | |
| 4248 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4249 // to the Java thread state that the JDK supports. | |
| 4250 // | |
| 4251 | |
| 4252 ResourceMark rm; | |
| 4253 | |
| 4254 // Check if threads is null | |
| 4255 if (values == NULL) { | |
| 4256 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4257 } | |
| 4258 | |
| 4259 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
| 4260 typeArrayHandle values_h(THREAD, v); | |
| 4261 | |
| 4262 objArrayHandle names_h; | |
| 4263 switch (javaThreadState) { | |
| 4264 case JAVA_THREAD_STATE_NEW : { | |
| 4265 assert(values_h->length() == 1 && | |
| 4266 values_h->int_at(0) == java_lang_Thread::NEW, | |
| 4267 "Invalid threadStatus value"); | |
| 4268 | |
| 1142 | 4269 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4270 1, /* only 1 substate */ |
| 4271 CHECK_NULL); | |
| 4272 names_h = objArrayHandle(THREAD, r); | |
| 4273 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
| 4274 names_h->obj_at_put(0, name()); | |
| 4275 break; | |
| 4276 } | |
| 4277 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4278 assert(values_h->length() == 1 && | |
| 4279 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
| 4280 "Invalid threadStatus value"); | |
| 4281 | |
| 1142 | 4282 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4283 1, /* only 1 substate */ |
| 4284 CHECK_NULL); | |
| 4285 names_h = objArrayHandle(THREAD, r); | |
| 4286 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
| 4287 names_h->obj_at_put(0, name()); | |
| 4288 break; | |
| 4289 } | |
| 4290 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4291 assert(values_h->length() == 1 && | |
| 4292 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
| 4293 "Invalid threadStatus value"); | |
| 4294 | |
| 1142 | 4295 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4296 1, /* only 1 substate */ |
| 4297 CHECK_NULL); | |
| 4298 names_h = objArrayHandle(THREAD, r); | |
| 4299 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
| 4300 names_h->obj_at_put(0, name()); | |
| 4301 break; | |
| 4302 } | |
| 4303 case JAVA_THREAD_STATE_WAITING : { | |
| 4304 assert(values_h->length() == 2 && | |
| 4305 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
| 4306 values_h->int_at(1) == java_lang_Thread::PARKED, | |
| 4307 "Invalid threadStatus value"); | |
| 1142 | 4308 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4309 2, /* number of substates */ |
| 4310 CHECK_NULL); | |
| 4311 names_h = objArrayHandle(THREAD, r); | |
| 4312 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
| 4313 CHECK_NULL); | |
| 4314 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
| 4315 CHECK_NULL); | |
| 4316 names_h->obj_at_put(0, name0()); | |
| 4317 names_h->obj_at_put(1, name1()); | |
| 4318 break; | |
| 4319 } | |
| 4320 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4321 assert(values_h->length() == 3 && | |
| 4322 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
| 4323 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
| 4324 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
| 4325 "Invalid threadStatus value"); | |
| 1142 | 4326 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4327 3, /* number of substates */ |
| 4328 CHECK_NULL); | |
| 4329 names_h = objArrayHandle(THREAD, r); | |
| 4330 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
| 4331 CHECK_NULL); | |
| 4332 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
| 4333 CHECK_NULL); | |
| 4334 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
| 4335 CHECK_NULL); | |
| 4336 names_h->obj_at_put(0, name0()); | |
| 4337 names_h->obj_at_put(1, name1()); | |
| 4338 names_h->obj_at_put(2, name2()); | |
| 4339 break; | |
| 4340 } | |
| 4341 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4342 assert(values_h->length() == 1 && | |
| 4343 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
| 4344 "Invalid threadStatus value"); | |
| 1142 | 4345 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4346 1, /* only 1 substate */ |
| 4347 CHECK_NULL); | |
| 4348 names_h = objArrayHandle(THREAD, r); | |
| 4349 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
| 4350 names_h->obj_at_put(0, name()); | |
| 4351 break; | |
| 4352 } | |
| 4353 default: | |
| 4354 // Unknown state - probably incompatible JDK version | |
| 4355 return NULL; | |
| 4356 } | |
| 4357 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
| 4358 } | |
| 4359 JVM_END | |
| 4360 | |
| 4361 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
| 4362 { | |
|
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cd30121047ac
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14481
diff
changeset
|
4363 memset(info, 0, info_size); |
| 0 | 4364 |
| 4365 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
| 4366 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4367 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4368 | |
| 4369 // when we add a new capability in the jvm_version_info struct, we should also | |
| 4370 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
| 4371 // counter defined in runtimeService.cpp. | |
| 4372 info->is_attachable = AttachListener::is_attach_supported(); | |
| 4373 } | |
| 4374 JVM_END |