Mercurial > hg > truffle
annotate src/share/vm/prims/jvm.cpp @ 17595:3eed8712d410
Merge with jdk8u11-b12
| author | Gilles Duboscq <duboscq@ssw.jku.at> |
|---|---|
| date | Wed, 15 Oct 2014 12:09:28 +0200 |
| parents | 3482684330ee |
| children | 52b4284cb496 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 14909 | 2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "classfile/classLoader.hpp" | |
| 27 #include "classfile/javaAssertions.hpp" | |
| 28 #include "classfile/javaClasses.hpp" | |
| 29 #include "classfile/symbolTable.hpp" | |
| 30 #include "classfile/systemDictionary.hpp" | |
| 31 #include "classfile/vmSymbols.hpp" | |
| 32 #include "gc_interface/collectedHeap.inline.hpp" | |
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33 #include "interpreter/bytecode.hpp" |
| 1972 | 34 #include "memory/oopFactory.hpp" |
| 35 #include "memory/universe.inline.hpp" | |
| 3938 | 36 #include "oops/fieldStreams.hpp" |
| 1972 | 37 #include "oops/instanceKlass.hpp" |
| 38 #include "oops/objArrayKlass.hpp" | |
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39 #include "oops/method.hpp" |
| 1972 | 40 #include "prims/jvm.h" |
| 41 #include "prims/jvm_misc.hpp" | |
| 42 #include "prims/jvmtiExport.hpp" | |
| 43 #include "prims/jvmtiThreadState.hpp" | |
| 44 #include "prims/nativeLookup.hpp" | |
| 45 #include "prims/privilegedStack.hpp" | |
| 46 #include "runtime/arguments.hpp" | |
| 47 #include "runtime/dtraceJSDT.hpp" | |
| 48 #include "runtime/handles.inline.hpp" | |
| 49 #include "runtime/init.hpp" | |
| 50 #include "runtime/interfaceSupport.hpp" | |
| 51 #include "runtime/java.hpp" | |
| 52 #include "runtime/javaCalls.hpp" | |
| 53 #include "runtime/jfieldIDWorkaround.hpp" | |
| 54 #include "runtime/os.hpp" | |
| 55 #include "runtime/perfData.hpp" | |
| 56 #include "runtime/reflection.hpp" | |
| 57 #include "runtime/vframe.hpp" | |
| 58 #include "runtime/vm_operations.hpp" | |
| 59 #include "services/attachListener.hpp" | |
| 60 #include "services/management.hpp" | |
| 61 #include "services/threadService.hpp" | |
| 10405 | 62 #include "trace/tracing.hpp" |
| 1972 | 63 #include "utilities/copy.hpp" |
| 64 #include "utilities/defaultStream.hpp" | |
| 65 #include "utilities/dtrace.hpp" | |
| 66 #include "utilities/events.hpp" | |
| 67 #include "utilities/histogram.hpp" | |
| 68 #include "utilities/top.hpp" | |
| 69 #include "utilities/utf8.hpp" | |
| 70 #ifdef TARGET_OS_FAMILY_linux | |
| 71 # include "jvm_linux.h" | |
| 72 #endif | |
| 73 #ifdef TARGET_OS_FAMILY_solaris | |
| 74 # include "jvm_solaris.h" | |
| 75 #endif | |
| 76 #ifdef TARGET_OS_FAMILY_windows | |
| 77 # include "jvm_windows.h" | |
| 78 #endif | |
| 3960 | 79 #ifdef TARGET_OS_FAMILY_bsd |
| 80 # include "jvm_bsd.h" | |
| 81 #endif | |
| 1972 | 82 |
| 0 | 83 #include <errno.h> |
| 84 | |
| 14909 | 85 #ifndef USDT2 |
| 86 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__begin, long long); | |
| 87 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__end, int); | |
| 88 HS_DTRACE_PROBE_DECL0(hotspot, thread__yield); | |
| 89 #endif /* !USDT2 */ | |
| 90 | |
| 0 | 91 /* |
| 92 NOTE about use of any ctor or function call that can trigger a safepoint/GC: | |
| 93 such ctors and calls MUST NOT come between an oop declaration/init and its | |
| 94 usage because if objects are move this may cause various memory stomps, bus | |
| 95 errors and segfaults. Here is a cookbook for causing so called "naked oop | |
| 96 failures": | |
| 97 | |
| 98 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> { | |
| 99 JVMWrapper("JVM_GetClassDeclaredFields"); | |
| 100 | |
| 101 // Object address to be held directly in mirror & not visible to GC | |
| 102 oop mirror = JNIHandles::resolve_non_null(ofClass); | |
| 103 | |
| 104 // If this ctor can hit a safepoint, moving objects around, then | |
| 105 ComplexConstructor foo; | |
| 106 | |
| 107 // Boom! mirror may point to JUNK instead of the intended object | |
| 108 (some dereference of mirror) | |
| 109 | |
| 110 // Here's another call that may block for GC, making mirror stale | |
| 111 MutexLocker ml(some_lock); | |
| 112 | |
| 113 // And here's an initializer that can result in a stale oop | |
| 114 // all in one step. | |
| 115 oop o = call_that_can_throw_exception(TRAPS); | |
| 116 | |
| 117 | |
| 118 The solution is to keep the oop declaration BELOW the ctor or function | |
| 119 call that might cause a GC, do another resolve to reassign the oop, or | |
| 120 consider use of a Handle instead of an oop so there is immunity from object | |
| 121 motion. But note that the "QUICK" entries below do not have a handlemark | |
| 122 and thus can only support use of handles passed in. | |
| 123 */ | |
| 124 | |
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125 static void trace_class_resolution_impl(Klass* to_class, TRAPS) { |
| 0 | 126 ResourceMark rm; |
| 127 int line_number = -1; | |
| 128 const char * source_file = NULL; | |
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129 const char * trace = "explicit"; |
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130 InstanceKlass* caller = NULL; |
| 0 | 131 JavaThread* jthread = JavaThread::current(); |
| 132 if (jthread->has_last_Java_frame()) { | |
| 133 vframeStream vfst(jthread); | |
| 134 | |
| 135 // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames | |
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136 TempNewSymbol access_controller = SymbolTable::new_symbol("java/security/AccessController", CHECK); |
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137 Klass* access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); |
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138 TempNewSymbol privileged_action = SymbolTable::new_symbol("java/security/PrivilegedAction", CHECK); |
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139 Klass* privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); |
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140 |
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141 Method* last_caller = NULL; |
| 0 | 142 |
| 143 while (!vfst.at_end()) { | |
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144 Method* m = vfst.method(); |
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145 if (!vfst.method()->method_holder()->is_subclass_of(SystemDictionary::ClassLoader_klass())&& |
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146 !vfst.method()->method_holder()->is_subclass_of(access_controller_klass) && |
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147 !vfst.method()->method_holder()->is_subclass_of(privileged_action_klass)) { |
| 0 | 148 break; |
| 149 } | |
| 150 last_caller = m; | |
| 151 vfst.next(); | |
| 152 } | |
| 153 // if this is called from Class.forName0 and that is called from Class.forName, | |
| 154 // then print the caller of Class.forName. If this is Class.loadClass, then print | |
| 155 // that caller, otherwise keep quiet since this should be picked up elsewhere. | |
| 156 bool found_it = false; | |
| 157 if (!vfst.at_end() && | |
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158 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
| 0 | 159 vfst.method()->name() == vmSymbols::forName0_name()) { |
| 160 vfst.next(); | |
| 161 if (!vfst.at_end() && | |
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162 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
| 0 | 163 vfst.method()->name() == vmSymbols::forName_name()) { |
| 164 vfst.next(); | |
| 165 found_it = true; | |
| 166 } | |
| 167 } else if (last_caller != NULL && | |
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168 last_caller->method_holder()->name() == |
| 0 | 169 vmSymbols::java_lang_ClassLoader() && |
| 170 (last_caller->name() == vmSymbols::loadClassInternal_name() || | |
| 171 last_caller->name() == vmSymbols::loadClass_name())) { | |
| 172 found_it = true; | |
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173 } else if (!vfst.at_end()) { |
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174 if (vfst.method()->is_native()) { |
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175 // JNI call |
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176 found_it = true; |
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177 } |
| 0 | 178 } |
| 179 if (found_it && !vfst.at_end()) { | |
| 180 // found the caller | |
| 181 caller = vfst.method()->method_holder(); | |
| 182 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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183 if (line_number == -1) { |
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184 // show method name if it's a native method |
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185 trace = vfst.method()->name_and_sig_as_C_string(); |
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186 } |
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187 Symbol* s = caller->source_file_name(); |
| 0 | 188 if (s != NULL) { |
| 189 source_file = s->as_C_string(); | |
| 190 } | |
| 191 } | |
| 192 } | |
| 193 if (caller != NULL) { | |
| 194 if (to_class != caller) { | |
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195 const char * from = caller->external_name(); |
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196 const char * to = to_class->external_name(); |
| 0 | 197 // print in a single call to reduce interleaving between threads |
| 198 if (source_file != NULL) { | |
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199 tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace); |
| 0 | 200 } else { |
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201 tty->print("RESOLVE %s %s (%s)\n", from, to, trace); |
| 0 | 202 } |
| 203 } | |
| 204 } | |
| 205 } | |
| 206 | |
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207 void trace_class_resolution(Klass* to_class) { |
| 0 | 208 EXCEPTION_MARK; |
| 209 trace_class_resolution_impl(to_class, THREAD); | |
| 210 if (HAS_PENDING_EXCEPTION) { | |
| 211 CLEAR_PENDING_EXCEPTION; | |
| 212 } | |
| 213 } | |
| 214 | |
| 215 // Wrapper to trace JVM functions | |
| 216 | |
| 217 #ifdef ASSERT | |
| 218 class JVMTraceWrapper : public StackObj { | |
| 219 public: | |
| 220 JVMTraceWrapper(const char* format, ...) { | |
| 221 if (TraceJVMCalls) { | |
| 222 va_list ap; | |
| 223 va_start(ap, format); | |
| 224 tty->print("JVM "); | |
| 225 tty->vprint_cr(format, ap); | |
| 226 va_end(ap); | |
| 227 } | |
| 228 } | |
| 229 }; | |
| 230 | |
| 231 Histogram* JVMHistogram; | |
| 232 volatile jint JVMHistogram_lock = 0; | |
| 233 | |
| 234 class JVMHistogramElement : public HistogramElement { | |
| 235 public: | |
| 236 JVMHistogramElement(const char* name); | |
| 237 }; | |
| 238 | |
| 239 JVMHistogramElement::JVMHistogramElement(const char* elementName) { | |
| 240 _name = elementName; | |
| 241 uintx count = 0; | |
| 242 | |
| 243 while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) { | |
| 244 while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) { | |
| 245 count +=1; | |
| 246 if ( (WarnOnStalledSpinLock > 0) | |
| 247 && (count % WarnOnStalledSpinLock == 0)) { | |
| 248 warning("JVMHistogram_lock seems to be stalled"); | |
| 249 } | |
| 250 } | |
| 251 } | |
| 252 | |
| 253 if(JVMHistogram == NULL) | |
| 254 JVMHistogram = new Histogram("JVM Call Counts",100); | |
| 255 | |
| 256 JVMHistogram->add_element(this); | |
| 257 Atomic::dec(&JVMHistogram_lock); | |
| 258 } | |
| 259 | |
| 260 #define JVMCountWrapper(arg) \ | |
| 261 static JVMHistogramElement* e = new JVMHistogramElement(arg); \ | |
| 262 if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen! | |
| 263 | |
| 264 #define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) | |
| 265 #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) | |
| 266 #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) | |
| 267 #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) | |
| 268 #else | |
| 269 #define JVMWrapper(arg1) | |
| 270 #define JVMWrapper2(arg1, arg2) | |
| 271 #define JVMWrapper3(arg1, arg2, arg3) | |
| 272 #define JVMWrapper4(arg1, arg2, arg3, arg4) | |
| 273 #endif | |
| 274 | |
| 275 | |
| 276 // Interface version ///////////////////////////////////////////////////////////////////// | |
| 277 | |
| 278 | |
| 279 JVM_LEAF(jint, JVM_GetInterfaceVersion()) | |
| 280 return JVM_INTERFACE_VERSION; | |
| 281 JVM_END | |
| 282 | |
| 283 | |
| 284 // java.lang.System ////////////////////////////////////////////////////////////////////// | |
| 285 | |
| 286 | |
| 287 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored)) | |
| 288 JVMWrapper("JVM_CurrentTimeMillis"); | |
| 289 return os::javaTimeMillis(); | |
| 290 JVM_END | |
| 291 | |
| 292 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored)) | |
| 293 JVMWrapper("JVM_NanoTime"); | |
| 294 return os::javaTimeNanos(); | |
| 295 JVM_END | |
| 296 | |
| 297 | |
| 298 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, | |
| 299 jobject dst, jint dst_pos, jint length)) | |
| 300 JVMWrapper("JVM_ArrayCopy"); | |
| 301 // Check if we have null pointers | |
| 302 if (src == NULL || dst == NULL) { | |
| 303 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 304 } | |
| 305 arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); | |
| 306 arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); | |
| 307 assert(s->is_oop(), "JVM_ArrayCopy: src not an oop"); | |
| 308 assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); | |
| 309 // Do copy | |
| 6983 | 310 s->klass()->copy_array(s, src_pos, d, dst_pos, length, thread); |
| 0 | 311 JVM_END |
| 312 | |
| 313 | |
| 314 static void set_property(Handle props, const char* key, const char* value, TRAPS) { | |
| 315 JavaValue r(T_OBJECT); | |
| 316 // public synchronized Object put(Object key, Object value); | |
| 317 HandleMark hm(THREAD); | |
| 318 Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK); | |
| 319 Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK); | |
| 320 JavaCalls::call_virtual(&r, | |
| 321 props, | |
| 1142 | 322 KlassHandle(THREAD, SystemDictionary::Properties_klass()), |
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323 vmSymbols::put_name(), |
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324 vmSymbols::object_object_object_signature(), |
| 0 | 325 key_str, |
| 326 value_str, | |
| 327 THREAD); | |
| 328 } | |
| 329 | |
| 330 | |
| 331 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties)); | |
| 332 | |
| 333 | |
| 334 JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties)) | |
| 335 JVMWrapper("JVM_InitProperties"); | |
| 336 ResourceMark rm; | |
| 337 | |
| 338 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
| 339 | |
| 340 // System property list includes both user set via -D option and | |
| 341 // jvm system specific properties. | |
| 342 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
| 343 PUTPROP(props, p->key(), p->value()); | |
| 344 } | |
| 345 | |
| 346 // Convert the -XX:MaxDirectMemorySize= command line flag | |
| 347 // to the sun.nio.MaxDirectMemorySize property. | |
| 348 // Do this after setting user properties to prevent people | |
| 349 // from setting the value with a -D option, as requested. | |
| 350 { | |
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351 if (FLAG_IS_DEFAULT(MaxDirectMemorySize)) { |
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352 PUTPROP(props, "sun.nio.MaxDirectMemorySize", "-1"); |
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353 } else { |
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354 char as_chars[256]; |
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355 jio_snprintf(as_chars, sizeof(as_chars), UINTX_FORMAT, MaxDirectMemorySize); |
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356 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); |
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357 } |
| 0 | 358 } |
| 359 | |
| 360 // JVM monitoring and management support | |
| 361 // Add the sun.management.compiler property for the compiler's name | |
| 362 { | |
| 363 #undef CSIZE | |
| 364 #if defined(_LP64) || defined(_WIN64) | |
| 365 #define CSIZE "64-Bit " | |
| 366 #else | |
| 367 #define CSIZE | |
| 368 #endif // 64bit | |
| 369 | |
| 370 #ifdef TIERED | |
| 371 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; | |
| 372 #else | |
| 373 #if defined(COMPILER1) | |
| 374 const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; | |
| 375 #elif defined(COMPILER2) | |
| 376 const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; | |
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377 #elif defined(GRAAL) |
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378 const char* compiler_name = "HotSpot " CSIZE "Graal Compiler"; |
| 0 | 379 #else |
| 380 const char* compiler_name = ""; | |
| 381 #endif // compilers | |
| 382 #endif // TIERED | |
| 383 | |
| 384 if (*compiler_name != '\0' && | |
| 385 (Arguments::mode() != Arguments::_int)) { | |
| 386 PUTPROP(props, "sun.management.compiler", compiler_name); | |
| 387 } | |
| 388 } | |
| 389 | |
| 390 return properties; | |
| 391 JVM_END | |
| 392 | |
| 393 | |
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394 /* |
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395 * Return the temporary directory that the VM uses for the attach |
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396 * and perf data files. |
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397 * |
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398 * It is important that this directory is well-known and the |
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399 * same for all VM instances. It cannot be affected by configuration |
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400 * variables such as java.io.tmpdir. |
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401 */ |
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402 JVM_ENTRY(jstring, JVM_GetTemporaryDirectory(JNIEnv *env)) |
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403 JVMWrapper("JVM_GetTemporaryDirectory"); |
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404 HandleMark hm(THREAD); |
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405 const char* temp_dir = os::get_temp_directory(); |
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406 Handle h = java_lang_String::create_from_platform_dependent_str(temp_dir, CHECK_NULL); |
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407 return (jstring) JNIHandles::make_local(env, h()); |
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408 JVM_END |
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409 |
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410 |
| 0 | 411 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// |
| 412 | |
| 413 extern volatile jint vm_created; | |
| 414 | |
| 415 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
| 416 if (vm_created != 0 && (code == 0)) { | |
| 417 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
| 418 Universe::run_finalizers_on_exit(); | |
| 419 } | |
| 420 before_exit(thread); | |
| 421 vm_exit(code); | |
| 422 JVM_END | |
| 423 | |
| 424 | |
| 425 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
| 426 before_exit(thread); | |
| 427 vm_exit(code); | |
| 428 JVM_END | |
| 429 | |
| 430 | |
| 431 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
| 432 register_on_exit_function(func); | |
| 433 JVM_END | |
| 434 | |
| 435 | |
| 436 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
| 437 JVMWrapper("JVM_GC"); | |
| 438 if (!DisableExplicitGC) { | |
| 439 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
| 440 } | |
| 441 JVM_END | |
| 442 | |
| 443 | |
| 444 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
| 445 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
| 446 return Universe::heap()->millis_since_last_gc(); | |
| 447 JVM_END | |
| 448 | |
| 449 | |
| 450 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
| 451 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
| 452 JVM_END | |
| 453 | |
| 454 | |
| 455 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
| 456 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
| 457 JVM_END | |
| 458 | |
| 459 static inline jlong convert_size_t_to_jlong(size_t val) { | |
| 460 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
| 461 NOT_LP64 (return (jlong)val;) | |
| 462 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
| 463 } | |
| 464 | |
| 465 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
| 466 JVMWrapper("JVM_TotalMemory"); | |
| 467 size_t n = Universe::heap()->capacity(); | |
| 468 return convert_size_t_to_jlong(n); | |
| 469 JVM_END | |
| 470 | |
| 471 | |
| 472 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
| 473 JVMWrapper("JVM_FreeMemory"); | |
| 474 CollectedHeap* ch = Universe::heap(); | |
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475 size_t n; |
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476 { |
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477 MutexLocker x(Heap_lock); |
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478 n = ch->capacity() - ch->used(); |
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479 } |
| 0 | 480 return convert_size_t_to_jlong(n); |
| 481 JVM_END | |
| 482 | |
| 483 | |
| 484 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
| 485 JVMWrapper("JVM_MaxMemory"); | |
| 486 size_t n = Universe::heap()->max_capacity(); | |
| 487 return convert_size_t_to_jlong(n); | |
| 488 JVM_END | |
| 489 | |
| 490 | |
| 491 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
| 492 JVMWrapper("JVM_ActiveProcessorCount"); | |
| 493 return os::active_processor_count(); | |
| 494 JVM_END | |
| 495 | |
| 496 | |
| 497 | |
| 498 // java.lang.Throwable ////////////////////////////////////////////////////// | |
| 499 | |
| 500 | |
| 501 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
| 502 JVMWrapper("JVM_FillInStackTrace"); | |
| 503 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
| 504 java_lang_Throwable::fill_in_stack_trace(exception); | |
| 505 JVM_END | |
| 506 | |
| 507 | |
| 508 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
| 509 JVMWrapper("JVM_GetStackTraceDepth"); | |
| 510 oop exception = JNIHandles::resolve(throwable); | |
| 511 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
| 512 JVM_END | |
| 513 | |
| 514 | |
| 515 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
| 516 JVMWrapper("JVM_GetStackTraceElement"); | |
| 517 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
| 518 oop exception = JNIHandles::resolve(throwable); | |
| 519 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
| 520 return JNIHandles::make_local(env, element); | |
| 521 JVM_END | |
| 522 | |
| 523 | |
| 524 // java.lang.Object /////////////////////////////////////////////// | |
| 525 | |
| 526 | |
| 527 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
| 528 JVMWrapper("JVM_IHashCode"); | |
| 529 // as implemented in the classic virtual machine; return 0 if object is NULL | |
| 530 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
| 531 JVM_END | |
| 532 | |
| 533 | |
| 534 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
| 535 JVMWrapper("JVM_MonitorWait"); | |
| 536 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 537 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
| 538 if (JvmtiExport::should_post_monitor_wait()) { | |
| 539 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
| 540 } | |
| 541 ObjectSynchronizer::wait(obj, ms, CHECK); | |
| 542 JVM_END | |
| 543 | |
| 544 | |
| 545 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
| 546 JVMWrapper("JVM_MonitorNotify"); | |
| 547 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 548 ObjectSynchronizer::notify(obj, CHECK); | |
| 549 JVM_END | |
| 550 | |
| 551 | |
| 552 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
| 553 JVMWrapper("JVM_MonitorNotifyAll"); | |
| 554 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 555 ObjectSynchronizer::notifyall(obj, CHECK); | |
| 556 JVM_END | |
| 557 | |
| 558 | |
| 559 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
| 560 JVMWrapper("JVM_Clone"); | |
| 561 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 562 const KlassHandle klass (THREAD, obj->klass()); | |
| 563 JvmtiVMObjectAllocEventCollector oam; | |
| 564 | |
| 565 #ifdef ASSERT | |
| 566 // Just checking that the cloneable flag is set correct | |
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567 if (obj->is_array()) { |
| 0 | 568 guarantee(klass->is_cloneable(), "all arrays are cloneable"); |
| 569 } else { | |
| 570 guarantee(obj->is_instance(), "should be instanceOop"); | |
| 1142 | 571 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
| 0 | 572 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
| 573 } | |
| 574 #endif | |
| 575 | |
| 576 // Check if class of obj supports the Cloneable interface. | |
| 577 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
| 578 if (!klass->is_cloneable()) { | |
| 579 ResourceMark rm(THREAD); | |
| 580 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
| 581 } | |
| 582 | |
| 583 // Make shallow object copy | |
| 584 const int size = obj->size(); | |
| 585 oop new_obj = NULL; | |
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586 if (obj->is_array()) { |
| 0 | 587 const int length = ((arrayOop)obj())->length(); |
| 588 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
| 589 } else { | |
| 590 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
| 591 } | |
| 592 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
| 593 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
| 594 // be suspended in the middle of copying the pointer and end up with parts | |
| 595 // of two different pointers in the field. Subsequent dereferences will crash. | |
| 596 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
| 597 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
| 598 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
| 599 // The same is true of StubRoutines::object_copy and the various oop_copy | |
| 600 // variants, and of the code generated by the inline_native_clone intrinsic. | |
| 601 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
| 602 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
| 603 (size_t)align_object_size(size) / HeapWordsPerLong); | |
| 604 // Clear the header | |
| 605 new_obj->init_mark(); | |
| 606 | |
| 607 // Store check (mark entire object and let gc sort it out) | |
| 608 BarrierSet* bs = Universe::heap()->barrier_set(); | |
| 609 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
| 610 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
| 611 | |
| 612 // Caution: this involves a java upcall, so the clone should be | |
| 613 // "gc-robust" by this stage. | |
| 614 if (klass->has_finalizer()) { | |
| 615 assert(obj->is_instance(), "should be instanceOop"); | |
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616 new_obj = InstanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); |
| 0 | 617 } |
| 618 | |
| 619 return JNIHandles::make_local(env, oop(new_obj)); | |
| 620 JVM_END | |
| 621 | |
| 622 // java.lang.Compiler //////////////////////////////////////////////////// | |
| 623 | |
| 624 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
| 625 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
| 626 // functions are all silently ignored unless JVM warnings are printed. | |
| 627 | |
| 628 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
| 629 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
| 630 JVM_END | |
| 631 | |
| 632 | |
| 633 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
| 634 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
| 635 return JNI_FALSE; | |
| 636 JVM_END | |
| 637 | |
| 638 | |
| 639 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
| 640 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
| 641 return JNI_FALSE; | |
| 642 JVM_END | |
| 643 | |
| 644 | |
| 645 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
| 646 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
| 647 return JNI_FALSE; | |
| 648 JVM_END | |
| 649 | |
| 650 | |
| 651 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
| 652 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
| 653 return NULL; | |
| 654 JVM_END | |
| 655 | |
| 656 | |
| 657 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
| 658 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
| 659 JVM_END | |
| 660 | |
| 661 | |
| 662 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
| 663 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
| 664 JVM_END | |
| 665 | |
| 666 | |
| 667 | |
| 668 // Error message support ////////////////////////////////////////////////////// | |
| 669 | |
| 670 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
| 671 JVMWrapper("JVM_GetLastErrorString"); | |
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672 return (jint)os::lasterror(buf, len); |
| 0 | 673 JVM_END |
| 674 | |
| 675 | |
| 676 // java.io.File /////////////////////////////////////////////////////////////// | |
| 677 | |
| 678 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
| 679 JVMWrapper2("JVM_NativePath (%s)", path); | |
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680 return os::native_path(path); |
| 0 | 681 JVM_END |
| 682 | |
| 683 | |
| 684 // Misc. class handling /////////////////////////////////////////////////////////// | |
| 685 | |
| 686 | |
| 687 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
| 688 JVMWrapper("JVM_GetCallerClass"); | |
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689 |
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690 // Pre-JDK 8 and early builds of JDK 8 don't have a CallerSensitive annotation; or |
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691 // sun.reflect.Reflection.getCallerClass with a depth parameter is provided |
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692 // temporarily for existing code to use until a replacement API is defined. |
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693 if (SystemDictionary::reflect_CallerSensitive_klass() == NULL || depth != JVM_CALLER_DEPTH) { |
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694 Klass* k = thread->security_get_caller_class(depth); |
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695 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, k->java_mirror()); |
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696 } |
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697 |
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698 // Getting the class of the caller frame. |
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699 // |
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700 // The call stack at this point looks something like this: |
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701 // |
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702 // [0] [ @CallerSensitive public sun.reflect.Reflection.getCallerClass ] |
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703 // [1] [ @CallerSensitive API.method ] |
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704 // [.] [ (skipped intermediate frames) ] |
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705 // [n] [ caller ] |
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706 vframeStream vfst(thread); |
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707 // Cf. LibraryCallKit::inline_native_Reflection_getCallerClass |
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708 for (int n = 0; !vfst.at_end(); vfst.security_next(), n++) { |
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709 Method* m = vfst.method(); |
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710 assert(m != NULL, "sanity"); |
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711 switch (n) { |
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712 case 0: |
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713 // This must only be called from Reflection.getCallerClass |
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714 if (m->intrinsic_id() != vmIntrinsics::_getCallerClass) { |
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715 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetCallerClass must only be called from Reflection.getCallerClass"); |
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716 } |
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717 // fall-through |
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718 case 1: |
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719 // Frame 0 and 1 must be caller sensitive. |
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720 if (!m->caller_sensitive()) { |
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721 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), err_msg("CallerSensitive annotation expected at frame %d", n)); |
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722 } |
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723 break; |
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724 default: |
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725 if (!m->is_ignored_by_security_stack_walk()) { |
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726 // We have reached the desired frame; return the holder class. |
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727 return (jclass) JNIHandles::make_local(env, m->method_holder()->java_mirror()); |
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728 } |
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729 break; |
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730 } |
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731 } |
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732 return NULL; |
| 0 | 733 JVM_END |
| 734 | |
| 735 | |
| 736 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
| 737 JVMWrapper("JVM_FindPrimitiveClass"); | |
| 738 oop mirror = NULL; | |
| 739 BasicType t = name2type(utf); | |
| 740 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
| 741 mirror = Universe::java_mirror(t); | |
| 742 } | |
| 743 if (mirror == NULL) { | |
| 744 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
| 745 } else { | |
| 746 return (jclass) JNIHandles::make_local(env, mirror); | |
| 747 } | |
| 748 JVM_END | |
| 749 | |
| 750 | |
| 751 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
| 752 JVMWrapper("JVM_ResolveClass"); | |
| 753 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
| 754 JVM_END | |
| 755 | |
|
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756 |
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757 // Returns a class loaded by the bootstrap class loader; or null |
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758 // if not found. ClassNotFoundException is not thrown. |
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759 // |
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760 // Rationale behind JVM_FindClassFromBootLoader |
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761 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
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762 // b> because of (a) java.dll has a direct dependecy on the unexported |
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763 // private symbol "_JVM_FindClassFromClassLoader@20". |
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764 // c> the launcher cannot use the private symbol as it dynamically opens |
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765 // the entry point, so if something changes, the launcher will fail |
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766 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
|
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767 // stable exported interface. |
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768 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
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769 // signature to change from _JVM_FindClassFromClassLoader@20 to |
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770 // JVM_FindClassFromClassLoader and will not be backward compatible |
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771 // with older JDKs. |
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772 // Thus a public/stable exported entry point is the right solution, |
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773 // public here means public in linker semantics, and is exported only |
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774 // to the JDK, and is not intended to be a public API. |
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775 |
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776 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
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777 const char* name)) |
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778 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
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779 |
|
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780 // Java libraries should ensure that name is never null... |
|
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781 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
|
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782 // It's impossible to create this class; the name cannot fit |
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783 // into the constant pool. |
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|
784 return NULL; |
|
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|
785 } |
|
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786 |
|
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787 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
|
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788 Klass* k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
|
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789 if (k == NULL) { |
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790 return NULL; |
|
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|
791 } |
|
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792 |
|
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793 if (TraceClassResolution) { |
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794 trace_class_resolution(k); |
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795 } |
| 6983 | 796 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
|
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797 JVM_END |
|
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|
798 |
|
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799 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
|
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|
800 jboolean init, jobject loader, |
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801 jboolean throwError)) |
|
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802 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
|
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803 throwError ? "error" : "exception"); |
| 388 | 804 // Java libraries should ensure that name is never null... |
|
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805 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
| 388 | 806 // It's impossible to create this class; the name cannot fit |
| 807 // into the constant pool. | |
| 808 if (throwError) { | |
| 809 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 810 } else { | |
| 811 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
| 812 } | |
| 813 } | |
|
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814 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
| 388 | 815 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
| 816 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 817 Handle(), throwError, THREAD); | |
| 818 | |
| 819 if (TraceClassResolution && result != NULL) { | |
|
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820 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
| 388 | 821 } |
| 822 return result; | |
| 0 | 823 JVM_END |
| 824 | |
| 825 | |
| 826 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
| 827 jboolean init, jclass from)) | |
| 828 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
|
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829 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
| 0 | 830 // It's impossible to create this class; the name cannot fit |
| 831 // into the constant pool. | |
| 832 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 833 } | |
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834 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
| 0 | 835 oop from_class_oop = JNIHandles::resolve(from); |
|
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836 Klass* from_class = (from_class_oop == NULL) |
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837 ? (Klass*)NULL |
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838 : java_lang_Class::as_Klass(from_class_oop); |
| 0 | 839 oop class_loader = NULL; |
| 840 oop protection_domain = NULL; | |
| 841 if (from_class != NULL) { | |
| 6983 | 842 class_loader = from_class->class_loader(); |
| 843 protection_domain = from_class->protection_domain(); | |
| 0 | 844 } |
| 845 Handle h_loader(THREAD, class_loader); | |
| 846 Handle h_prot (THREAD, protection_domain); | |
| 847 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 848 h_prot, true, thread); | |
| 849 | |
| 850 if (TraceClassResolution && result != NULL) { | |
| 851 // this function is generally only used for class loading during verification. | |
| 852 ResourceMark rm; | |
| 853 oop from_mirror = JNIHandles::resolve_non_null(from); | |
|
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854 Klass* from_class = java_lang_Class::as_Klass(from_mirror); |
| 6983 | 855 const char * from_name = from_class->external_name(); |
| 0 | 856 |
| 857 oop mirror = JNIHandles::resolve_non_null(result); | |
|
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858 Klass* to_class = java_lang_Class::as_Klass(mirror); |
| 6983 | 859 const char * to = to_class->external_name(); |
| 0 | 860 tty->print("RESOLVE %s %s (verification)\n", from_name, to); |
| 861 } | |
| 862 | |
| 863 return result; | |
| 864 JVM_END | |
| 865 | |
| 866 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
| 867 if (loader.is_null()) { | |
| 868 return; | |
| 869 } | |
| 870 | |
| 871 // check whether the current caller thread holds the lock or not. | |
| 872 // If not, increment the corresponding counter | |
| 873 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
| 874 ObjectSynchronizer::owner_self) { | |
| 875 counter->inc(); | |
| 876 } | |
| 877 } | |
| 878 | |
| 879 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
|
973
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880 // and JVM_DefineClassWithSourceCond() |
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881 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
|
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882 jobject loader, const jbyte *buf, |
|
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883 jsize len, jobject pd, const char *source, |
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|
884 jboolean verify, TRAPS) { |
|
431
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885 if (source == NULL) source = "__JVM_DefineClass__"; |
| 0 | 886 |
|
875
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887 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
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888 JavaThread* jt = (JavaThread*) THREAD; |
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889 |
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890 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
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891 ClassLoader::perf_define_appclass_selftime(), |
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892 ClassLoader::perf_define_appclasses(), |
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893 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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894 jt->get_thread_stat()->perf_timers_addr(), |
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895 PerfClassTraceTime::DEFINE_CLASS); |
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896 |
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897 if (UsePerfData) { |
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898 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
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899 } |
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900 |
| 0 | 901 // Since exceptions can be thrown, class initialization can take place |
| 902 // if name is NULL no check for class name in .class stream has to be made. | |
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903 TempNewSymbol class_name = NULL; |
| 0 | 904 if (name != NULL) { |
| 905 const int str_len = (int)strlen(name); | |
|
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906 if (str_len > Symbol::max_length()) { |
| 0 | 907 // It's impossible to create this class; the name cannot fit |
| 908 // into the constant pool. | |
| 909 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 910 } | |
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911 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
| 0 | 912 } |
| 913 | |
| 914 ResourceMark rm(THREAD); | |
| 915 ClassFileStream st((u1*) buf, len, (char *)source); | |
| 916 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
| 917 if (UsePerfData) { | |
| 918 is_lock_held_by_thread(class_loader, | |
| 919 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
| 920 THREAD); | |
| 921 } | |
| 922 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
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923 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, |
| 0 | 924 protection_domain, &st, |
|
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925 verify != 0, |
| 0 | 926 CHECK_NULL); |
| 927 | |
| 928 if (TraceClassResolution && k != NULL) { | |
| 929 trace_class_resolution(k); | |
| 930 } | |
| 931 | |
| 6983 | 932 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
| 0 | 933 } |
| 934 | |
| 935 | |
| 936 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
| 937 JVMWrapper2("JVM_DefineClass %s", name); | |
| 938 | |
|
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939 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
| 0 | 940 JVM_END |
| 941 | |
| 942 | |
| 943 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
| 944 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
| 945 | |
|
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946 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
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947 JVM_END |
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948 |
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949 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
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950 jobject loader, const jbyte *buf, |
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951 jsize len, jobject pd, |
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952 const char *source, jboolean verify)) |
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953 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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954 |
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955 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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956 JVM_END |
| 0 | 957 |
| 958 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
| 959 JVMWrapper("JVM_FindLoadedClass"); | |
| 960 ResourceMark rm(THREAD); | |
| 961 | |
| 962 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 963 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
| 964 | |
| 965 const char* str = java_lang_String::as_utf8_string(string()); | |
| 966 // Sanity check, don't expect null | |
| 967 if (str == NULL) return NULL; | |
| 968 | |
| 969 const int str_len = (int)strlen(str); | |
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970 if (str_len > Symbol::max_length()) { |
| 0 | 971 // It's impossible to create this class; the name cannot fit |
| 972 // into the constant pool. | |
| 973 return NULL; | |
| 974 } | |
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975 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
| 0 | 976 |
| 977 // Security Note: | |
| 978 // The Java level wrapper will perform the necessary security check allowing | |
| 979 // us to pass the NULL as the initiating class loader. | |
| 980 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
| 981 if (UsePerfData) { | |
| 982 is_lock_held_by_thread(h_loader, | |
| 983 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
| 984 THREAD); | |
| 985 } | |
| 986 | |
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987 Klass* k = SystemDictionary::find_instance_or_array_klass(klass_name, |
| 0 | 988 h_loader, |
| 989 Handle(), | |
| 990 CHECK_NULL); | |
| 991 | |
| 992 return (k == NULL) ? NULL : | |
| 6983 | 993 (jclass) JNIHandles::make_local(env, k->java_mirror()); |
| 0 | 994 JVM_END |
| 995 | |
| 996 | |
| 997 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
| 998 | |
| 999 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
| 1000 assert (cls != NULL, "illegal class"); | |
| 1001 JVMWrapper("JVM_GetClassName"); | |
| 1002 JvmtiVMObjectAllocEventCollector oam; | |
| 1003 ResourceMark rm(THREAD); | |
| 1004 const char* name; | |
| 1005 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1006 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
| 1007 } else { | |
| 1008 // Consider caching interned string in Klass | |
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1009 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 0 | 1010 assert(k->is_klass(), "just checking"); |
| 6983 | 1011 name = k->external_name(); |
| 0 | 1012 } |
| 1013 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
| 1014 return (jstring) JNIHandles::make_local(env, result); | |
| 1015 JVM_END | |
| 1016 | |
| 1017 | |
| 1018 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
| 1019 JVMWrapper("JVM_GetClassInterfaces"); | |
| 1020 JvmtiVMObjectAllocEventCollector oam; | |
| 1021 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1022 | |
| 1023 // Special handling for primitive objects | |
| 1024 if (java_lang_Class::is_primitive(mirror)) { | |
| 1025 // Primitive objects does not have any interfaces | |
| 1142 | 1026 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1027 return (jobjectArray) JNIHandles::make_local(env, r); |
| 1028 } | |
| 1029 | |
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1030 KlassHandle klass(thread, java_lang_Class::as_Klass(mirror)); |
| 0 | 1031 // Figure size of result array |
| 1032 int size; | |
| 1033 if (klass->oop_is_instance()) { | |
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1034 size = InstanceKlass::cast(klass())->local_interfaces()->length(); |
| 0 | 1035 } else { |
| 1036 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
| 1037 size = 2; | |
| 1038 } | |
| 1039 | |
| 1040 // Allocate result array | |
| 1142 | 1041 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
| 0 | 1042 objArrayHandle result (THREAD, r); |
| 1043 // Fill in result | |
| 1044 if (klass->oop_is_instance()) { | |
| 1045 // Regular instance klass, fill in all local interfaces | |
| 1046 for (int index = 0; index < size; index++) { | |
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1047 Klass* k = InstanceKlass::cast(klass())->local_interfaces()->at(index); |
| 6983 | 1048 result->obj_at_put(index, k->java_mirror()); |
| 0 | 1049 } |
| 1050 } else { | |
| 1051 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
| 6983 | 1052 result->obj_at_put(0, SystemDictionary::Cloneable_klass()->java_mirror()); |
| 1053 result->obj_at_put(1, SystemDictionary::Serializable_klass()->java_mirror()); | |
| 0 | 1054 } |
| 1055 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1056 JVM_END | |
| 1057 | |
| 1058 | |
| 1059 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
| 1060 JVMWrapper("JVM_GetClassLoader"); | |
| 1061 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1062 return NULL; | |
| 1063 } | |
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1064 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1065 oop loader = k->class_loader(); |
| 0 | 1066 return JNIHandles::make_local(env, loader); |
| 1067 JVM_END | |
| 1068 | |
| 1069 | |
| 1070 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
| 1071 JVMWrapper("JVM_IsInterface"); | |
| 1072 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1073 if (java_lang_Class::is_primitive(mirror)) { | |
| 1074 return JNI_FALSE; | |
| 1075 } | |
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1076 Klass* k = java_lang_Class::as_Klass(mirror); |
| 6983 | 1077 jboolean result = k->is_interface(); |
| 1078 assert(!result || k->oop_is_instance(), | |
| 0 | 1079 "all interfaces are instance types"); |
| 1080 // The compiler intrinsic for isInterface tests the | |
| 1081 // Klass::_access_flags bits in the same way. | |
| 1082 return result; | |
| 1083 JVM_END | |
| 1084 | |
| 1085 | |
| 1086 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
| 1087 JVMWrapper("JVM_GetClassSigners"); | |
| 1088 JvmtiVMObjectAllocEventCollector oam; | |
| 1089 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1090 // There are no signers for primitive types | |
| 1091 return NULL; | |
| 1092 } | |
| 1093 | |
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1094 objArrayOop signers = java_lang_Class::signers(JNIHandles::resolve_non_null(cls)); |
| 0 | 1095 |
| 1096 // If there are no signers set in the class, or if the class | |
| 1097 // is an array, return NULL. | |
| 1098 if (signers == NULL) return NULL; | |
| 1099 | |
| 1100 // copy of the signers array | |
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1101 Klass* element = ObjArrayKlass::cast(signers->klass())->element_klass(); |
| 0 | 1102 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); |
| 1103 for (int index = 0; index < signers->length(); index++) { | |
| 1104 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
| 1105 } | |
| 1106 | |
| 1107 // return the copy | |
| 1108 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
| 1109 JVM_END | |
| 1110 | |
| 1111 | |
| 1112 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
| 1113 JVMWrapper("JVM_SetClassSigners"); | |
| 1114 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1115 // This call is ignored for primitive types and arrays. | |
| 1116 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
| 1117 // be called with an array. Only the bootstrap loader creates arrays. | |
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1118 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1119 if (k->oop_is_instance()) { |
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1120 java_lang_Class::set_signers(k->java_mirror(), objArrayOop(JNIHandles::resolve(signers))); |
| 0 | 1121 } |
| 1122 } | |
| 1123 JVM_END | |
| 1124 | |
| 1125 | |
| 1126 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
| 1127 JVMWrapper("JVM_GetProtectionDomain"); | |
| 1128 if (JNIHandles::resolve(cls) == NULL) { | |
| 1129 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
| 1130 } | |
| 1131 | |
| 1132 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1133 // Primitive types does not have a protection domain. | |
| 1134 return NULL; | |
| 1135 } | |
| 1136 | |
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1137 oop pd = java_lang_Class::protection_domain(JNIHandles::resolve(cls)); |
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1138 return (jobject) JNIHandles::make_local(env, pd); |
| 0 | 1139 JVM_END |
| 1140 | |
| 11010 | 1141 static bool is_authorized(Handle context, instanceKlassHandle klass, TRAPS) { |
| 1142 // If there is a security manager and protection domain, check the access | |
| 1143 // in the protection domain, otherwise it is authorized. | |
| 1144 if (java_lang_System::has_security_manager()) { | |
| 1145 | |
| 1146 // For bootstrapping, if pd implies method isn't in the JDK, allow | |
| 1147 // this context to revert to older behavior. | |
| 1148 // In this case the isAuthorized field in AccessControlContext is also not | |
| 1149 // present. | |
| 1150 if (Universe::protection_domain_implies_method() == NULL) { | |
| 1151 return true; | |
| 1152 } | |
| 1153 | |
| 1154 // Whitelist certain access control contexts | |
| 1155 if (java_security_AccessControlContext::is_authorized(context)) { | |
| 1156 return true; | |
| 1157 } | |
| 1158 | |
| 1159 oop prot = klass->protection_domain(); | |
| 1160 if (prot != NULL) { | |
| 1161 // Call pd.implies(new SecurityPermission("createAccessControlContext")) | |
| 1162 // in the new wrapper. | |
| 1163 methodHandle m(THREAD, Universe::protection_domain_implies_method()); | |
| 1164 Handle h_prot(THREAD, prot); | |
| 1165 JavaValue result(T_BOOLEAN); | |
| 1166 JavaCallArguments args(h_prot); | |
| 1167 JavaCalls::call(&result, m, &args, CHECK_false); | |
| 1168 return (result.get_jboolean() != 0); | |
| 1169 } | |
| 1170 } | |
| 1171 return true; | |
| 1172 } | |
| 1173 | |
| 1174 // Create an AccessControlContext with a protection domain with null codesource | |
| 1175 // and null permissions - which gives no permissions. | |
| 1176 oop create_dummy_access_control_context(TRAPS) { | |
| 1177 InstanceKlass* pd_klass = InstanceKlass::cast(SystemDictionary::ProtectionDomain_klass()); | |
| 1178 // new ProtectionDomain(null,null); | |
| 1179 oop null_protection_domain = pd_klass->allocate_instance(CHECK_NULL); | |
| 1180 Handle null_pd(THREAD, null_protection_domain); | |
| 1181 | |
| 1182 // new ProtectionDomain[] {pd}; | |
| 1183 objArrayOop context = oopFactory::new_objArray(pd_klass, 1, CHECK_NULL); | |
| 1184 context->obj_at_put(0, null_pd()); | |
| 1185 | |
| 1186 // new AccessControlContext(new ProtectionDomain[] {pd}) | |
| 1187 objArrayHandle h_context(THREAD, context); | |
| 1188 oop result = java_security_AccessControlContext::create(h_context, false, Handle(), CHECK_NULL); | |
| 1189 return result; | |
| 1190 } | |
| 0 | 1191 |
| 1192 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
| 1193 JVMWrapper("JVM_DoPrivileged"); | |
| 1194 | |
| 1195 if (action == NULL) { | |
| 1196 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
| 1197 } | |
| 1198 | |
| 11010 | 1199 // Compute the frame initiating the do privileged operation and setup the privileged stack |
| 1200 vframeStream vfst(thread); | |
| 1201 vfst.security_get_caller_frame(1); | |
| 1202 | |
| 1203 if (vfst.at_end()) { | |
| 1204 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "no caller?"); | |
| 1205 } | |
| 1206 | |
| 1207 Method* method = vfst.method(); | |
| 1208 instanceKlassHandle klass (THREAD, method->method_holder()); | |
| 1209 | |
| 1210 // Check that action object understands "Object run()" | |
| 1211 Handle h_context; | |
| 1212 if (context != NULL) { | |
| 1213 h_context = Handle(THREAD, JNIHandles::resolve(context)); | |
| 1214 bool authorized = is_authorized(h_context, klass, CHECK_NULL); | |
| 1215 if (!authorized) { | |
| 1216 // Create an unprivileged access control object and call it's run function | |
| 1217 // instead. | |
| 1218 oop noprivs = create_dummy_access_control_context(CHECK_NULL); | |
| 1219 h_context = Handle(THREAD, noprivs); | |
| 1220 } | |
| 1221 } | |
| 0 | 1222 |
| 1223 // Check that action object understands "Object run()" | |
| 1224 Handle object (THREAD, JNIHandles::resolve(action)); | |
| 1225 | |
| 1226 // get run() method | |
| 6983 | 1227 Method* m_oop = object->klass()->uncached_lookup_method( |
| 0 | 1228 vmSymbols::run_method_name(), |
| 1229 vmSymbols::void_object_signature()); | |
| 1230 methodHandle m (THREAD, m_oop); | |
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1231 if (m.is_null() || !m->is_method() || !m()->is_public() || m()->is_static()) { |
| 0 | 1232 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); |
| 1233 } | |
| 1234 | |
| 11010 | 1235 // Stack allocated list of privileged stack elements |
| 1236 PrivilegedElement pi; | |
| 0 | 1237 if (!vfst.at_end()) { |
| 11010 | 1238 pi.initialize(&vfst, h_context(), thread->privileged_stack_top(), CHECK_NULL); |
| 0 | 1239 thread->set_privileged_stack_top(&pi); |
| 1240 } | |
| 1241 | |
| 1242 | |
| 1243 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
| 1244 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
| 1245 Handle pending_exception; | |
| 1246 JavaValue result(T_OBJECT); | |
| 1247 JavaCallArguments args(object); | |
| 1248 JavaCalls::call(&result, m, &args, THREAD); | |
| 1249 | |
| 1250 // done with action, remove ourselves from the list | |
| 1251 if (!vfst.at_end()) { | |
| 1252 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
| 1253 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
| 1254 } | |
| 1255 | |
| 1256 if (HAS_PENDING_EXCEPTION) { | |
| 1257 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
| 1258 CLEAR_PENDING_EXCEPTION; | |
| 14909 | 1259 |
| 1142 | 1260 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
| 1261 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
| 0 | 1262 // Throw a java.security.PrivilegedActionException(Exception e) exception |
| 1263 JavaCallArguments args(pending_exception); | |
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1264 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1265 vmSymbols::exception_void_signature(), |
| 0 | 1266 &args); |
| 1267 } | |
| 1268 } | |
| 1269 | |
| 1270 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
| 1271 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
| 1272 JVM_END | |
| 1273 | |
| 1274 | |
| 1275 // Returns the inherited_access_control_context field of the running thread. | |
| 1276 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1277 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
| 1278 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
| 1279 return JNIHandles::make_local(env, result); | |
| 1280 JVM_END | |
| 1281 | |
| 1282 class RegisterArrayForGC { | |
| 1283 private: | |
| 1284 JavaThread *_thread; | |
| 1285 public: | |
| 1286 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
| 1287 _thread = thread; | |
| 1288 _thread->register_array_for_gc(array); | |
| 1289 } | |
| 1290 | |
| 1291 ~RegisterArrayForGC() { | |
| 1292 _thread->register_array_for_gc(NULL); | |
| 1293 } | |
| 1294 }; | |
| 1295 | |
| 1296 | |
| 1297 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1298 JVMWrapper("JVM_GetStackAccessControlContext"); | |
| 1299 if (!UsePrivilegedStack) return NULL; | |
| 1300 | |
| 1301 ResourceMark rm(THREAD); | |
| 1302 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
| 1303 JvmtiVMObjectAllocEventCollector oam; | |
| 1304 | |
| 1305 // count the protection domains on the execution stack. We collapse | |
| 1306 // duplicate consecutive protection domains into a single one, as | |
| 1307 // well as stopping when we hit a privileged frame. | |
| 1308 | |
| 1309 // Use vframeStream to iterate through Java frames | |
| 1310 vframeStream vfst(thread); | |
| 1311 | |
| 1312 oop previous_protection_domain = NULL; | |
| 1313 Handle privileged_context(thread, NULL); | |
| 1314 bool is_privileged = false; | |
| 1315 oop protection_domain = NULL; | |
| 1316 | |
| 1317 for(; !vfst.at_end(); vfst.next()) { | |
| 1318 // get method of frame | |
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1319 Method* method = vfst.method(); |
| 0 | 1320 intptr_t* frame_id = vfst.frame_id(); |
| 1321 | |
| 1322 // check the privileged frames to see if we have a match | |
| 1323 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
| 1324 // this frame is privileged | |
| 1325 is_privileged = true; | |
| 1326 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
| 1327 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
| 1328 } else { | |
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1329 protection_domain = method->method_holder()->protection_domain(); |
| 0 | 1330 } |
| 1331 | |
| 1332 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
| 1333 local_array->push(protection_domain); | |
| 1334 previous_protection_domain = protection_domain; | |
| 1335 } | |
| 1336 | |
| 1337 if (is_privileged) break; | |
| 1338 } | |
| 1339 | |
| 1340 | |
| 1341 // either all the domains on the stack were system domains, or | |
| 1342 // we had a privileged system domain | |
| 1343 if (local_array->is_empty()) { | |
| 1344 if (is_privileged && privileged_context.is_null()) return NULL; | |
| 1345 | |
| 1346 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
| 1347 return JNIHandles::make_local(env, result); | |
| 1348 } | |
| 1349 | |
| 1350 // the resource area must be registered in case of a gc | |
| 1351 RegisterArrayForGC ragc(thread, local_array); | |
| 1142 | 1352 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
| 0 | 1353 local_array->length(), CHECK_NULL); |
| 1354 objArrayHandle h_context(thread, context); | |
| 1355 for (int index = 0; index < local_array->length(); index++) { | |
| 1356 h_context->obj_at_put(index, local_array->at(index)); | |
| 1357 } | |
| 1358 | |
| 1359 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
| 1360 | |
| 1361 return JNIHandles::make_local(env, result); | |
| 1362 JVM_END | |
| 1363 | |
| 1364 | |
| 1365 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
| 1366 JVMWrapper("JVM_IsArrayClass"); | |
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1367 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1368 return (k != NULL) && k->oop_is_array() ? true : false; |
| 0 | 1369 JVM_END |
| 1370 | |
| 1371 | |
| 1372 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
| 1373 JVMWrapper("JVM_IsPrimitiveClass"); | |
| 1374 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1375 return (jboolean) java_lang_Class::is_primitive(mirror); | |
| 1376 JVM_END | |
| 1377 | |
| 1378 | |
| 1379 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
| 1380 JVMWrapper("JVM_GetComponentType"); | |
| 1381 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1382 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
| 1383 return (jclass) JNIHandles::make_local(env, result); | |
| 1384 JVM_END | |
| 1385 | |
| 1386 | |
| 1387 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
| 1388 JVMWrapper("JVM_GetClassModifiers"); | |
| 1389 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1390 // Primitive type | |
| 1391 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 1392 } | |
| 1393 | |
| 6983 | 1394 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 1395 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); |
| 1396 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
| 1397 return k->modifier_flags(); | |
| 1398 JVM_END | |
| 1399 | |
| 1400 | |
| 1401 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
| 1402 | |
| 1403 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
| 1404 JvmtiVMObjectAllocEventCollector oam; | |
| 1405 // ofClass is a reference to a java_lang_Class object. The mirror object | |
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1406 // of an InstanceKlass |
| 0 | 1407 |
| 1408 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1409 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
| 1142 | 1410 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1411 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1412 } | |
| 1413 | |
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1414 instanceKlassHandle k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
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1415 InnerClassesIterator iter(k); |
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1416 |
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1417 if (iter.length() == 0) { |
| 0 | 1418 // Neither an inner nor outer class |
| 1142 | 1419 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1420 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1421 } | |
| 1422 | |
| 1423 // find inner class info | |
| 1424 constantPoolHandle cp(thread, k->constants()); | |
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1425 int length = iter.length(); |
| 0 | 1426 |
| 1427 // Allocate temp. result array | |
| 1142 | 1428 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
| 0 | 1429 objArrayHandle result (THREAD, r); |
| 1430 int members = 0; | |
| 1431 | |
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1432 for (; !iter.done(); iter.next()) { |
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1433 int ioff = iter.inner_class_info_index(); |
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1434 int ooff = iter.outer_class_info_index(); |
| 0 | 1435 |
| 1436 if (ioff != 0 && ooff != 0) { | |
| 1437 // Check to see if the name matches the class we're looking for | |
| 1438 // before attempting to find the class. | |
| 1439 if (cp->klass_name_at_matches(k, ooff)) { | |
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1440 Klass* outer_klass = cp->klass_at(ooff, CHECK_NULL); |
| 0 | 1441 if (outer_klass == k()) { |
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1442 Klass* ik = cp->klass_at(ioff, CHECK_NULL); |
| 0 | 1443 instanceKlassHandle inner_klass (THREAD, ik); |
| 1444 | |
| 1445 // Throws an exception if outer klass has not declared k as | |
| 1446 // an inner klass | |
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1447 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
| 0 | 1448 |
| 1449 result->obj_at_put(members, inner_klass->java_mirror()); | |
| 1450 members++; | |
| 1451 } | |
| 1452 } | |
| 1453 } | |
| 1454 } | |
| 1455 | |
| 1456 if (members != length) { | |
| 1457 // Return array of right length | |
| 1142 | 1458 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
| 0 | 1459 for(int i = 0; i < members; i++) { |
| 1460 res->obj_at_put(i, result->obj_at(i)); | |
| 1461 } | |
| 1462 return (jobjectArray)JNIHandles::make_local(env, res); | |
| 1463 } | |
| 1464 | |
| 1465 return (jobjectArray)JNIHandles::make_local(env, result()); | |
| 1466 JVM_END | |
| 1467 | |
| 1468 | |
| 1469 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
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1470 { |
| 0 | 1471 // ofClass is a reference to a java_lang_Class object. |
| 1472 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1473 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
| 0 | 1474 return NULL; |
| 1475 } | |
| 1476 | |
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1477 bool inner_is_member = false; |
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1478 Klass* outer_klass |
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1479 = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)) |
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1480 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
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1481 if (outer_klass == NULL) return NULL; // already a top-level class |
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1482 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
| 6983 | 1483 return (jclass) JNIHandles::make_local(env, outer_klass->java_mirror()); |
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1484 } |
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1485 JVM_END |
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1486 |
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1487 // should be in InstanceKlass.cpp, but is here for historical reasons |
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1488 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
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1489 bool* inner_is_member, |
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1490 TRAPS) { |
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1491 Thread* thread = THREAD; |
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1492 InnerClassesIterator iter(k); |
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1493 if (iter.length() == 0) { |
| 0 | 1494 // No inner class info => no declaring class |
| 1495 return NULL; | |
| 1496 } | |
| 1497 | |
| 1498 constantPoolHandle i_cp(thread, k->constants()); | |
| 1499 | |
| 1500 bool found = false; | |
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1501 Klass* ok; |
| 0 | 1502 instanceKlassHandle outer_klass; |
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1503 *inner_is_member = false; |
| 0 | 1504 |
| 1505 // Find inner_klass attribute | |
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1506 for (; !iter.done() && !found; iter.next()) { |
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1507 int ioff = iter.inner_class_info_index(); |
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1508 int ooff = iter.outer_class_info_index(); |
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1509 int noff = iter.inner_name_index(); |
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1510 if (ioff != 0) { |
| 0 | 1511 // Check to see if the name matches the class we're looking for |
| 1512 // before attempting to find the class. | |
| 1513 if (i_cp->klass_name_at_matches(k, ioff)) { | |
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1514 Klass* inner_klass = i_cp->klass_at(ioff, CHECK_NULL); |
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1515 found = (k() == inner_klass); |
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1516 if (found && ooff != 0) { |
| 0 | 1517 ok = i_cp->klass_at(ooff, CHECK_NULL); |
| 1518 outer_klass = instanceKlassHandle(thread, ok); | |
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|
1519 *inner_is_member = true; |
| 0 | 1520 } |
| 1521 } | |
| 1522 } | |
| 1523 } | |
| 1524 | |
|
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|
1525 if (found && outer_klass.is_null()) { |
|
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|
1526 // It may be anonymous; try for that. |
|
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|
1527 int encl_method_class_idx = k->enclosing_method_class_index(); |
|
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|
1528 if (encl_method_class_idx != 0) { |
|
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|
1529 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
|
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|
1530 outer_klass = instanceKlassHandle(thread, ok); |
|
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|
1531 *inner_is_member = false; |
|
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|
1532 } |
|
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|
1533 } |
|
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|
1534 |
| 0 | 1535 // If no inner class attribute found for this class. |
|
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|
1536 if (outer_klass.is_null()) return NULL; |
| 0 | 1537 |
| 1538 // Throws an exception if outer klass has not declared k as an inner klass | |
|
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|
1539 // We need evidence that each klass knows about the other, or else |
|
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|
1540 // the system could allow a spoof of an inner class to gain access rights. |
|
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|
1541 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
|
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|
1542 return outer_klass(); |
|
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|
1543 } |
| 0 | 1544 |
| 1545 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
| 1546 assert (cls != NULL, "illegal class"); | |
| 1547 JVMWrapper("JVM_GetClassSignature"); | |
| 1548 JvmtiVMObjectAllocEventCollector oam; | |
| 1549 ResourceMark rm(THREAD); | |
| 1550 // Return null for arrays and primatives | |
| 1551 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
|
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|
1552 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 6983 | 1553 if (k->oop_is_instance()) { |
|
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|
1554 Symbol* sym = InstanceKlass::cast(k)->generic_signature(); |
|
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|
1555 if (sym == NULL) return NULL; |
| 0 | 1556 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 1557 return (jstring) JNIHandles::make_local(env, str()); | |
| 1558 } | |
| 1559 } | |
| 1560 return NULL; | |
| 1561 JVM_END | |
| 1562 | |
| 1563 | |
| 1564 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
| 1565 assert (cls != NULL, "illegal class"); | |
| 1566 JVMWrapper("JVM_GetClassAnnotations"); | |
|
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|
1567 |
| 0 | 1568 // Return null for arrays and primitives |
| 1569 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
|
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|
1570 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 6983 | 1571 if (k->oop_is_instance()) { |
|
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|
1572 typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->class_annotations(), CHECK_NULL); |
|
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|
1573 return (jbyteArray) JNIHandles::make_local(env, a); |
| 0 | 1574 } |
| 1575 } | |
| 1576 return NULL; | |
| 1577 JVM_END | |
| 1578 | |
| 1579 | |
|
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|
1580 static bool jvm_get_field_common(jobject field, fieldDescriptor& fd, TRAPS) { |
| 0 | 1581 // some of this code was adapted from from jni_FromReflectedField |
| 1582 | |
| 1583 oop reflected = JNIHandles::resolve_non_null(field); | |
| 1584 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
|
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|
1585 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 1586 int slot = java_lang_reflect_Field::slot(reflected); |
| 1587 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
| 1588 | |
| 1589 KlassHandle kh(THREAD, k); | |
|
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|
1590 intptr_t offset = InstanceKlass::cast(kh())->field_offset(slot); |
| 0 | 1591 |
| 1592 if (modifiers & JVM_ACC_STATIC) { | |
| 1593 // for static fields we only look in the current class | |
|
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|
1594 if (!InstanceKlass::cast(kh())->find_local_field_from_offset(offset, true, &fd)) { |
| 0 | 1595 assert(false, "cannot find static field"); |
|
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|
1596 return false; |
| 0 | 1597 } |
| 1598 } else { | |
| 1599 // for instance fields we start with the current class and work | |
| 1600 // our way up through the superclass chain | |
|
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|
1601 if (!InstanceKlass::cast(kh())->find_field_from_offset(offset, false, &fd)) { |
| 0 | 1602 assert(false, "cannot find instance field"); |
|
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|
1603 return false; |
| 0 | 1604 } |
| 1605 } | |
|
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|
1606 return true; |
|
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|
1607 } |
|
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|
1608 |
|
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|
1609 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) |
|
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|
1610 // field is a handle to a java.lang.reflect.Field object |
|
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|
1611 assert(field != NULL, "illegal field"); |
|
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changeset
|
1612 JVMWrapper("JVM_GetFieldAnnotations"); |
|
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|
1613 |
|
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|
1614 fieldDescriptor fd; |
|
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|
1615 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
|
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|
1616 if (!gotFd) { |
|
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|
1617 return NULL; |
|
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changeset
|
1618 } |
| 0 | 1619 |
|
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|
1620 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.annotations(), THREAD)); |
| 0 | 1621 JVM_END |
| 1622 | |
| 1623 | |
|
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|
1624 static Method* jvm_get_method_common(jobject method) { |
| 0 | 1625 // some of this code was adapted from from jni_FromReflectedMethod |
| 1626 | |
| 1627 oop reflected = JNIHandles::resolve_non_null(method); | |
| 1628 oop mirror = NULL; | |
| 1629 int slot = 0; | |
| 1630 | |
| 1142 | 1631 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
| 0 | 1632 mirror = java_lang_reflect_Constructor::clazz(reflected); |
| 1633 slot = java_lang_reflect_Constructor::slot(reflected); | |
| 1634 } else { | |
| 1142 | 1635 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
| 0 | 1636 "wrong type"); |
| 1637 mirror = java_lang_reflect_Method::clazz(reflected); | |
| 1638 slot = java_lang_reflect_Method::slot(reflected); | |
| 1639 } | |
|
6725
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|
1640 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 1641 |
|
7462
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changeset
|
1642 Method* m = InstanceKlass::cast(k)->method_with_idnum(slot); |
|
8818
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changeset
|
1643 assert(m != NULL, "cannot find method"); |
|
1916ca1dec2f
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diff
changeset
|
1644 return m; // caller has to deal with NULL in product mode |
| 0 | 1645 } |
| 1646 | |
| 1647 | |
| 1648 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
| 1649 JVMWrapper("JVM_GetMethodAnnotations"); | |
| 1650 | |
| 1651 // method is a handle to a java.lang.reflect.Method object | |
|
7462
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|
1652 Method* m = jvm_get_method_common(method); |
|
8818
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changeset
|
1653 if (m == NULL) { |
|
1916ca1dec2f
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diff
changeset
|
1654 return NULL; |
|
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diff
changeset
|
1655 } |
|
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changeset
|
1656 |
|
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|
1657 return (jbyteArray) JNIHandles::make_local(env, |
|
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|
1658 Annotations::make_java_array(m->annotations(), THREAD)); |
| 0 | 1659 JVM_END |
| 1660 | |
| 1661 | |
| 1662 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
| 1663 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
| 1664 | |
| 1665 // method is a handle to a java.lang.reflect.Method object | |
|
7462
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changeset
|
1666 Method* m = jvm_get_method_common(method); |
|
8818
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changeset
|
1667 if (m == NULL) { |
|
1916ca1dec2f
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diff
changeset
|
1668 return NULL; |
|
1916ca1dec2f
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8805
diff
changeset
|
1669 } |
|
1916ca1dec2f
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changeset
|
1670 |
|
6725
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|
1671 return (jbyteArray) JNIHandles::make_local(env, |
|
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|
1672 Annotations::make_java_array(m->annotation_default(), THREAD)); |
| 0 | 1673 JVM_END |
| 1674 | |
| 1675 | |
| 1676 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
| 1677 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
| 1678 | |
| 1679 // method is a handle to a java.lang.reflect.Method object | |
|
7462
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|
1680 Method* m = jvm_get_method_common(method); |
|
8818
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changeset
|
1681 if (m == NULL) { |
|
1916ca1dec2f
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changeset
|
1682 return NULL; |
|
1916ca1dec2f
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diff
changeset
|
1683 } |
|
1916ca1dec2f
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|
1684 |
|
6725
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changeset
|
1685 return (jbyteArray) JNIHandles::make_local(env, |
|
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|
1686 Annotations::make_java_array(m->parameter_annotations(), THREAD)); |
| 0 | 1687 JVM_END |
| 1688 | |
|
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|
1689 /* Type use annotations support (JDK 1.8) */ |
|
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|
1690 |
|
35431a769282
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changeset
|
1691 JVM_ENTRY(jbyteArray, JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls)) |
|
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|
1692 assert (cls != NULL, "illegal class"); |
|
35431a769282
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6983
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changeset
|
1693 JVMWrapper("JVM_GetClassTypeAnnotations"); |
|
35431a769282
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changeset
|
1694 ResourceMark rm(THREAD); |
|
35431a769282
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changeset
|
1695 // Return null for arrays and primitives |
|
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changeset
|
1696 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
|
35431a769282
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|
1697 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
|
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|
1698 if (k->oop_is_instance()) { |
| 8031 | 1699 AnnotationArray* type_annotations = InstanceKlass::cast(k)->class_type_annotations(); |
|
7611
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|
1700 if (type_annotations != NULL) { |
| 8031 | 1701 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
|
7611
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|
1702 return (jbyteArray) JNIHandles::make_local(env, a); |
|
ff0a7943fd29
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|
1703 } |
|
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|
1704 } |
|
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|
1705 } |
|
35431a769282
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changeset
|
1706 return NULL; |
|
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|
1707 JVM_END |
|
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|
1708 |
|
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changeset
|
1709 JVM_ENTRY(jbyteArray, JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method)) |
|
1916ca1dec2f
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changeset
|
1710 assert (method != NULL, "illegal method"); |
|
1916ca1dec2f
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changeset
|
1711 JVMWrapper("JVM_GetMethodTypeAnnotations"); |
|
1916ca1dec2f
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|
1712 |
|
1916ca1dec2f
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changeset
|
1713 // method is a handle to a java.lang.reflect.Method object |
|
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1714 Method* m = jvm_get_method_common(method); |
|
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|
1715 if (m == NULL) { |
|
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|
1716 return NULL; |
|
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|
1717 } |
|
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|
1718 |
|
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|
1719 AnnotationArray* type_annotations = m->type_annotations(); |
|
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|
1720 if (type_annotations != NULL) { |
|
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|
1721 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
|
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|
1722 return (jbyteArray) JNIHandles::make_local(env, a); |
|
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|
1723 } |
|
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|
1724 |
|
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|
1725 return NULL; |
|
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|
1726 JVM_END |
|
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|
1727 |
|
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|
1728 JVM_ENTRY(jbyteArray, JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field)) |
|
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|
1729 assert (field != NULL, "illegal field"); |
|
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|
1730 JVMWrapper("JVM_GetFieldTypeAnnotations"); |
|
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|
1731 |
|
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|
1732 fieldDescriptor fd; |
|
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|
1733 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
|
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|
1734 if (!gotFd) { |
|
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|
1735 return NULL; |
|
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|
1736 } |
|
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|
1737 |
|
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|
1738 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.type_annotations(), THREAD)); |
|
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|
1739 JVM_END |
|
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|
1740 |
|
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|
1741 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { |
|
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1742 if (!cp->is_within_bounds(index)) { |
|
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|
1743 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); |
|
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|
1744 } |
|
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|
1745 } |
|
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|
1746 |
|
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|
1747 JVM_ENTRY(jobjectArray, JVM_GetMethodParameters(JNIEnv *env, jobject method)) |
|
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|
1748 { |
|
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|
1749 JVMWrapper("JVM_GetMethodParameters"); |
|
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|
1750 // method is a handle to a java.lang.reflect.Method object |
|
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|
1751 Method* method_ptr = jvm_get_method_common(method); |
|
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|
1752 methodHandle mh (THREAD, method_ptr); |
|
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|
1753 Handle reflected_method (THREAD, JNIHandles::resolve_non_null(method)); |
|
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|
1754 const int num_params = mh->method_parameters_length(); |
|
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|
1755 |
|
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|
1756 if (0 != num_params) { |
|
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|
1757 // make sure all the symbols are properly formatted |
|
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|
1758 for (int i = 0; i < num_params; i++) { |
|
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|
1759 MethodParametersElement* params = mh->method_parameters_start(); |
|
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|
1760 int index = params[i].name_cp_index; |
|
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|
1761 bounds_check(mh->constants(), index, CHECK_NULL); |
|
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|
1762 |
|
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|
1763 if (0 != index && !mh->constants()->tag_at(index).is_utf8()) { |
|
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|
1764 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), |
|
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|
1765 "Wrong type at constant pool index"); |
|
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|
1766 } |
|
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|
1767 |
|
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|
1768 } |
|
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|
1769 |
|
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|
1770 objArrayOop result_oop = oopFactory::new_objArray(SystemDictionary::reflect_Parameter_klass(), num_params, CHECK_NULL); |
|
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|
1771 objArrayHandle result (THREAD, result_oop); |
|
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|
1772 |
|
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|
1773 for (int i = 0; i < num_params; i++) { |
|
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|
1774 MethodParametersElement* params = mh->method_parameters_start(); |
|
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|
1775 // For a 0 index, give a NULL symbol |
|
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8003557: NPG: Klass* const k should be const Klass* k.
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|
1776 Symbol* sym = 0 != params[i].name_cp_index ? |
|
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|
1777 mh->constants()->symbol_at(params[i].name_cp_index) : NULL; |
|
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8006949: Update hotspot for MethodParameters format change
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|
1778 int flags = params[i].flags; |
|
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|
1779 oop param = Reflection::new_parameter(reflected_method, i, sym, |
|
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|
1780 flags, CHECK_NULL); |
|
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|
1781 result->obj_at_put(i, param); |
|
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|
1782 } |
|
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|
1783 return (jobjectArray)JNIHandles::make_local(env, result()); |
|
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|
1784 } else { |
|
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|
1785 return (jobjectArray)NULL; |
|
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|
1786 } |
|
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|
1787 } |
|
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|
1788 JVM_END |
| 0 | 1789 |
| 1790 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
| 1791 | |
| 1792 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1793 { | |
| 1794 JVMWrapper("JVM_GetClassDeclaredFields"); | |
| 1795 JvmtiVMObjectAllocEventCollector oam; | |
| 1796 | |
| 1797 // Exclude primitive types and array types | |
| 1798 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1799 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
| 0 | 1800 // Return empty array |
| 1142 | 1801 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
| 0 | 1802 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1803 } | |
| 1804 | |
|
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1805 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
| 0 | 1806 constantPoolHandle cp(THREAD, k->constants()); |
| 1807 | |
| 1808 // Ensure class is linked | |
| 1809 k->link_class(CHECK_NULL); | |
| 1810 | |
| 1811 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
| 1812 bool skip_backtrace = false; | |
| 1813 | |
| 1814 // Allocate result | |
| 1815 int num_fields; | |
| 1816 | |
| 1817 if (publicOnly) { | |
| 1818 num_fields = 0; | |
| 3938 | 1819 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
| 1820 if (fs.access_flags().is_public()) ++num_fields; | |
| 0 | 1821 } |
| 1822 } else { | |
| 3938 | 1823 num_fields = k->java_fields_count(); |
| 0 | 1824 |
| 1142 | 1825 if (k() == SystemDictionary::Throwable_klass()) { |
| 0 | 1826 num_fields--; |
| 1827 skip_backtrace = true; | |
| 1828 } | |
| 1829 } | |
| 1830 | |
| 1142 | 1831 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
| 0 | 1832 objArrayHandle result (THREAD, r); |
| 1833 | |
| 1834 int out_idx = 0; | |
| 1835 fieldDescriptor fd; | |
| 3938 | 1836 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
| 0 | 1837 if (skip_backtrace) { |
| 1838 // 4496456 skip java.lang.Throwable.backtrace | |
| 3938 | 1839 int offset = fs.offset(); |
| 0 | 1840 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
| 1841 } | |
| 1842 | |
| 3938 | 1843 if (!publicOnly || fs.access_flags().is_public()) { |
|
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|
1844 fd.reinitialize(k(), fs.index()); |
| 0 | 1845 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
| 1846 result->obj_at_put(out_idx, field); | |
| 1847 ++out_idx; | |
| 1848 } | |
| 1849 } | |
| 1850 assert(out_idx == num_fields, "just checking"); | |
| 1851 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1852 } | |
| 1853 JVM_END | |
| 1854 | |
|
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|
1855 static bool select_method(methodHandle method, bool want_constructor) { |
|
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|
1856 if (want_constructor) { |
|
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|
1857 return (method->is_initializer() && !method->is_static()); |
|
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|
1858 } else { |
|
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|
1859 return (!method->is_initializer() && !method->is_overpass()); |
|
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|
1860 } |
|
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|
1861 } |
|
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|
1862 |
|
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|
1863 static jobjectArray get_class_declared_methods_helper( |
|
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|
1864 JNIEnv *env, |
|
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|
1865 jclass ofClass, jboolean publicOnly, |
|
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|
1866 bool want_constructor, |
|
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|
1867 Klass* klass, TRAPS) { |
|
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|
1868 |
| 0 | 1869 JvmtiVMObjectAllocEventCollector oam; |
| 1870 | |
| 1871 // Exclude primitive types and array types | |
| 1872 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
| 6983 | 1873 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
| 0 | 1874 // Return empty array |
|
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|
1875 oop res = oopFactory::new_objArray(klass, 0, CHECK_NULL); |
| 0 | 1876 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1877 } | |
| 1878 | |
|
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1879 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
| 0 | 1880 |
| 1881 // Ensure class is linked | |
| 1882 k->link_class(CHECK_NULL); | |
| 1883 | |
|
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1884 Array<Method*>* methods = k->methods(); |
| 0 | 1885 int methods_length = methods->length(); |
|
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|
1886 |
|
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|
1887 // Save original method_idnum in case of redefinition, which can change |
|
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|
1888 // the idnum of obsolete methods. The new method will have the same idnum |
|
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|
1889 // but if we refresh the methods array, the counts will be wrong. |
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1890 ResourceMark rm(THREAD); |
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1891 GrowableArray<int>* idnums = new GrowableArray<int>(methods_length); |
| 0 | 1892 int num_methods = 0; |
| 1893 | |
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1894 for (int i = 0; i < methods_length; i++) { |
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1895 methodHandle method(THREAD, methods->at(i)); |
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1896 if (select_method(method, want_constructor)) { |
| 0 | 1897 if (!publicOnly || method->is_public()) { |
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1898 idnums->push(method->method_idnum()); |
| 0 | 1899 ++num_methods; |
| 1900 } | |
| 1901 } | |
| 1902 } | |
| 1903 | |
| 1904 // Allocate result | |
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1905 objArrayOop r = oopFactory::new_objArray(klass, num_methods, CHECK_NULL); |
| 0 | 1906 objArrayHandle result (THREAD, r); |
| 1907 | |
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1908 // Now just put the methods that we selected above, but go by their idnum |
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1909 // in case of redefinition. The methods can be redefined at any safepoint, |
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1910 // so above when allocating the oop array and below when creating reflect |
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1911 // objects. |
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1912 for (int i = 0; i < num_methods; i++) { |
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1913 methodHandle method(THREAD, k->method_with_idnum(idnums->at(i))); |
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1914 if (method.is_null()) { |
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1915 // Method may have been deleted and seems this API can handle null |
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1916 // Otherwise should probably put a method that throws NSME |
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1917 result->obj_at_put(i, NULL); |
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1918 } else { |
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1919 oop m; |
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1920 if (want_constructor) { |
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1921 m = Reflection::new_constructor(method, CHECK_NULL); |
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1922 } else { |
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1923 m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); |
| 0 | 1924 } |
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1925 result->obj_at_put(i, m); |
| 0 | 1926 } |
| 1927 } | |
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1928 |
| 0 | 1929 return (jobjectArray) JNIHandles::make_local(env, result()); |
| 1930 } | |
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1931 |
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1932 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) |
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1933 { |
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1934 JVMWrapper("JVM_GetClassDeclaredMethods"); |
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1935 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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1936 /*want_constructor*/ false, |
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1937 SystemDictionary::reflect_Method_klass(), THREAD); |
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1938 } |
| 0 | 1939 JVM_END |
| 1940 | |
| 1941 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1942 { | |
| 1943 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
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1944 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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1945 /*want_constructor*/ true, |
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1946 SystemDictionary::reflect_Constructor_klass(), THREAD); |
| 0 | 1947 } |
| 1948 JVM_END | |
| 1949 | |
| 1950 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
| 1951 { | |
| 1952 JVMWrapper("JVM_GetClassAccessFlags"); | |
| 1953 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1954 // Primitive type | |
| 1955 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 1956 } | |
| 1957 | |
| 6983 | 1958 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 1959 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; |
| 1960 } | |
| 1961 JVM_END | |
| 1962 | |
| 1963 | |
| 1964 // Constant pool access ////////////////////////////////////////////////////////// | |
| 1965 | |
| 1966 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
| 1967 { | |
| 1968 JVMWrapper("JVM_GetClassConstantPool"); | |
| 1969 JvmtiVMObjectAllocEventCollector oam; | |
| 1970 | |
| 1971 // Return null for primitives and arrays | |
| 1972 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
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1973 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1974 if (k->oop_is_instance()) { |
| 0 | 1975 instanceKlassHandle k_h(THREAD, k); |
| 1976 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
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1977 sun_reflect_ConstantPool::set_cp(jcp(), k_h->constants()); |
| 0 | 1978 return JNIHandles::make_local(jcp()); |
| 1979 } | |
| 1980 } | |
| 1981 return NULL; | |
| 1982 } | |
| 1983 JVM_END | |
| 1984 | |
| 1985 | |
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1986 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject obj, jobject unused)) |
| 0 | 1987 { |
| 1988 JVMWrapper("JVM_ConstantPoolGetSize"); | |
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1989 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1990 return cp->length(); |
| 1991 } | |
| 1992 JVM_END | |
| 1993 | |
| 1994 | |
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1995 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 1996 { |
| 1997 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
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1998 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1999 bounds_check(cp, index, CHECK_NULL); |
| 2000 constantTag tag = cp->tag_at(index); | |
| 2001 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 2002 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2003 } | |
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2004 Klass* k = cp->klass_at(index, CHECK_NULL); |
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2005 return (jclass) JNIHandles::make_local(k->java_mirror()); |
| 0 | 2006 } |
| 2007 JVM_END | |
| 2008 | |
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2009 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2010 { |
| 2011 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
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2012 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2013 bounds_check(cp, index, CHECK_NULL); |
| 2014 constantTag tag = cp->tag_at(index); | |
| 2015 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 2016 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2017 } | |
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2018 Klass* k = ConstantPool::klass_at_if_loaded(cp, index); |
| 0 | 2019 if (k == NULL) return NULL; |
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2020 return (jclass) JNIHandles::make_local(k->java_mirror()); |
| 0 | 2021 } |
| 2022 JVM_END | |
| 2023 | |
| 2024 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 2025 constantTag tag = cp->tag_at(index); | |
| 2026 if (!tag.is_method() && !tag.is_interface_method()) { | |
| 2027 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2028 } | |
| 2029 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2030 Klass* k_o; |
| 0 | 2031 if (force_resolution) { |
| 2032 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 2033 } else { | |
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2034 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
| 0 | 2035 if (k_o == NULL) return NULL; |
| 2036 } | |
| 2037 instanceKlassHandle k(THREAD, k_o); | |
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2038 Symbol* name = cp->uncached_name_ref_at(index); |
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2039 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 2040 methodHandle m (THREAD, k->find_method(name, sig)); |
| 2041 if (m.is_null()) { | |
| 2042 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
| 2043 } | |
| 2044 oop method; | |
| 2045 if (!m->is_initializer() || m->is_static()) { | |
| 2046 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
| 2047 } else { | |
| 2048 method = Reflection::new_constructor(m, CHECK_NULL); | |
| 2049 } | |
| 2050 return JNIHandles::make_local(method); | |
| 2051 } | |
| 2052 | |
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2053 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2054 { |
| 2055 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
| 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, true, CHECK_NULL); | |
| 2060 return res; | |
| 2061 } | |
| 2062 JVM_END | |
| 2063 | |
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2064 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2065 { |
| 2066 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
| 2067 JvmtiVMObjectAllocEventCollector oam; | |
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2068 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2069 bounds_check(cp, index, CHECK_NULL); |
| 2070 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
| 2071 return res; | |
| 2072 } | |
| 2073 JVM_END | |
| 2074 | |
| 2075 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 2076 constantTag tag = cp->tag_at(index); | |
| 2077 if (!tag.is_field()) { | |
| 2078 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2079 } | |
| 2080 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2081 Klass* k_o; |
| 0 | 2082 if (force_resolution) { |
| 2083 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 2084 } else { | |
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2085 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
| 0 | 2086 if (k_o == NULL) return NULL; |
| 2087 } | |
| 2088 instanceKlassHandle k(THREAD, k_o); | |
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2089 Symbol* name = cp->uncached_name_ref_at(index); |
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2090 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 2091 fieldDescriptor fd; |
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2092 Klass* target_klass = k->find_field(name, sig, &fd); |
| 0 | 2093 if (target_klass == NULL) { |
| 2094 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
| 2095 } | |
| 2096 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
| 2097 return JNIHandles::make_local(field); | |
| 2098 } | |
| 2099 | |
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2100 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject obj, jobject unusedl, jint index)) |
| 0 | 2101 { |
| 2102 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
| 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, true, CHECK_NULL); | |
| 2107 return res; | |
| 2108 } | |
| 2109 JVM_END | |
| 2110 | |
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2111 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2112 { |
| 2113 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
| 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 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
| 2118 return res; | |
| 2119 } | |
| 2120 JVM_END | |
| 2121 | |
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2122 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2123 { |
| 2124 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
| 2125 JvmtiVMObjectAllocEventCollector oam; | |
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2126 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2127 bounds_check(cp, index, CHECK_NULL); |
| 2128 constantTag tag = cp->tag_at(index); | |
| 2129 if (!tag.is_field_or_method()) { | |
| 2130 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2131 } | |
| 2132 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
|
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2133 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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2134 Symbol* member_name = cp->uncached_name_ref_at(index); |
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2135 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
| 1142 | 2136 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
| 0 | 2137 objArrayHandle dest(THREAD, dest_o); |
| 2138 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
| 2139 dest->obj_at_put(0, str()); | |
| 2140 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
| 2141 dest->obj_at_put(1, str()); | |
| 2142 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
| 2143 dest->obj_at_put(2, str()); | |
| 2144 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 2145 } | |
| 2146 JVM_END | |
| 2147 | |
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2148 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2149 { |
| 2150 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
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2151 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2152 bounds_check(cp, index, CHECK_0); |
| 2153 constantTag tag = cp->tag_at(index); | |
| 2154 if (!tag.is_int()) { | |
| 2155 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2156 } | |
| 2157 return cp->int_at(index); | |
| 2158 } | |
| 2159 JVM_END | |
| 2160 | |
|
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2161 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2162 { |
| 2163 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
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2164 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2165 bounds_check(cp, index, CHECK_(0L)); |
| 2166 constantTag tag = cp->tag_at(index); | |
| 2167 if (!tag.is_long()) { | |
| 2168 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2169 } | |
| 2170 return cp->long_at(index); | |
| 2171 } | |
| 2172 JVM_END | |
| 2173 | |
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2174 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2175 { |
| 2176 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
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2177 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2178 bounds_check(cp, index, CHECK_(0.0f)); |
| 2179 constantTag tag = cp->tag_at(index); | |
| 2180 if (!tag.is_float()) { | |
| 2181 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2182 } | |
| 2183 return cp->float_at(index); | |
| 2184 } | |
| 2185 JVM_END | |
| 2186 | |
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2187 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2188 { |
| 2189 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
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2190 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2191 bounds_check(cp, index, CHECK_(0.0)); |
| 2192 constantTag tag = cp->tag_at(index); | |
| 2193 if (!tag.is_double()) { | |
| 2194 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2195 } | |
| 2196 return cp->double_at(index); | |
| 2197 } | |
| 2198 JVM_END | |
| 2199 | |
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2200 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2201 { |
| 2202 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
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2203 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2204 bounds_check(cp, index, CHECK_NULL); |
| 2205 constantTag tag = cp->tag_at(index); | |
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2206 if (!tag.is_string()) { |
| 0 | 2207 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
| 2208 } | |
| 2209 oop str = cp->string_at(index, CHECK_NULL); | |
| 2210 return (jstring) JNIHandles::make_local(str); | |
| 2211 } | |
| 2212 JVM_END | |
| 2213 | |
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2214 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2215 { |
| 2216 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
| 2217 JvmtiVMObjectAllocEventCollector oam; | |
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2218 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2219 bounds_check(cp, index, CHECK_NULL); |
| 2220 constantTag tag = cp->tag_at(index); | |
| 2221 if (!tag.is_symbol()) { | |
| 2222 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2223 } | |
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2224 Symbol* sym = cp->symbol_at(index); |
| 0 | 2225 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 2226 return (jstring) JNIHandles::make_local(str()); | |
| 2227 } | |
| 2228 JVM_END | |
| 2229 | |
| 2230 | |
| 2231 // Assertion support. ////////////////////////////////////////////////////////// | |
| 2232 | |
| 2233 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
| 2234 JVMWrapper("JVM_DesiredAssertionStatus"); | |
| 2235 assert(cls != NULL, "bad class"); | |
| 2236 | |
| 2237 oop r = JNIHandles::resolve(cls); | |
| 2238 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
| 2239 if (java_lang_Class::is_primitive(r)) return false; | |
| 2240 | |
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2241 Klass* k = java_lang_Class::as_Klass(r); |
| 6983 | 2242 assert(k->oop_is_instance(), "must be an instance klass"); |
| 2243 if (! k->oop_is_instance()) return false; | |
| 0 | 2244 |
| 2245 ResourceMark rm(THREAD); | |
| 6983 | 2246 const char* name = k->name()->as_C_string(); |
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2247 bool system_class = k->class_loader() == NULL GRAAL_ONLY(|| SystemDictionary::graal_loader() == k->class_loader()); |
| 0 | 2248 return JavaAssertions::enabled(name, system_class); |
| 2249 | |
| 2250 JVM_END | |
| 2251 | |
| 2252 | |
| 2253 // Return a new AssertionStatusDirectives object with the fields filled in with | |
| 2254 // command-line assertion arguments (i.e., -ea, -da). | |
| 2255 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
| 2256 JVMWrapper("JVM_AssertionStatusDirectives"); | |
| 2257 JvmtiVMObjectAllocEventCollector oam; | |
| 2258 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
| 2259 return JNIHandles::make_local(env, asd); | |
| 2260 JVM_END | |
| 2261 | |
| 2262 // Verification //////////////////////////////////////////////////////////////////////////////// | |
| 2263 | |
| 2264 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
| 2265 | |
| 2266 // RedefineClasses support: bug 6214132 caused verification to fail. | |
| 2267 // All functions from this section should call the jvmtiThreadSate function: | |
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2268 // Klass* class_to_verify_considering_redefinition(Klass* klass). |
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2269 // The function returns a Klass* of the _scratch_class if the verifier |
| 0 | 2270 // was invoked in the middle of the class redefinition. |
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2271 // Otherwise it returns its argument value which is the _the_class Klass*. |
| 0 | 2272 // Please, refer to the description in the jvmtiThreadSate.hpp. |
| 2273 | |
| 2274 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
| 2275 JVMWrapper("JVM_GetClassNameUTF"); | |
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2276 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2277 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2278 return k->name()->as_utf8(); |
| 0 | 2279 JVM_END |
| 2280 | |
| 2281 | |
| 2282 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
| 2283 JVMWrapper("JVM_GetClassCPTypes"); | |
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2284 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2285 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2286 // types will have length zero if this is not an InstanceKlass |
| 0 | 2287 // (length is determined by call to JVM_GetClassCPEntriesCount) |
| 6983 | 2288 if (k->oop_is_instance()) { |
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2289 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2290 for (int index = cp->length() - 1; index >= 0; index--) { |
| 2291 constantTag tag = cp->tag_at(index); | |
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2292 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : tag.value(); |
| 0 | 2293 } |
| 2294 } | |
| 2295 JVM_END | |
| 2296 | |
| 2297 | |
| 2298 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
| 2299 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
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2300 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2301 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2302 if (!k->oop_is_instance()) |
| 0 | 2303 return 0; |
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2304 return InstanceKlass::cast(k)->constants()->length(); |
| 0 | 2305 JVM_END |
| 2306 | |
| 2307 | |
| 2308 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
| 2309 JVMWrapper("JVM_GetClassFieldsCount"); | |
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2310 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2311 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2312 if (!k->oop_is_instance()) |
| 0 | 2313 return 0; |
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2314 return InstanceKlass::cast(k)->java_fields_count(); |
| 0 | 2315 JVM_END |
| 2316 | |
| 2317 | |
| 2318 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
| 2319 JVMWrapper("JVM_GetClassMethodsCount"); | |
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2320 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2321 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2322 if (!k->oop_is_instance()) |
| 0 | 2323 return 0; |
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2324 return InstanceKlass::cast(k)->methods()->length(); |
| 0 | 2325 JVM_END |
| 2326 | |
| 2327 | |
| 2328 // The following methods, used for the verifier, are never called with | |
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2329 // array klasses, so a direct cast to InstanceKlass is safe. |
| 0 | 2330 // Typically, these methods are called in a loop with bounds determined |
| 2331 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
| 2332 // zero for arrays. | |
| 2333 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
| 2334 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
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2335 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2336 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2337 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2338 int length = method->checked_exceptions_length(); |
| 0 | 2339 if (length > 0) { |
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2340 CheckedExceptionElement* table= method->checked_exceptions_start(); |
| 0 | 2341 for (int i = 0; i < length; i++) { |
| 2342 exceptions[i] = table[i].class_cp_index; | |
| 2343 } | |
| 2344 } | |
| 2345 JVM_END | |
| 2346 | |
| 2347 | |
| 2348 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
| 2349 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
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2350 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2351 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2352 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2353 return method->checked_exceptions_length(); |
| 0 | 2354 JVM_END |
| 2355 | |
| 2356 | |
| 2357 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
| 2358 JVMWrapper("JVM_GetMethodIxByteCode"); | |
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2359 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2360 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2361 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2362 memcpy(code, method->code_base(), method->code_size()); |
| 0 | 2363 JVM_END |
| 2364 | |
| 2365 | |
| 2366 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
| 2367 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
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2368 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2369 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2370 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2371 return method->code_size(); |
| 0 | 2372 JVM_END |
| 2373 | |
| 2374 | |
| 2375 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
| 2376 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
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2377 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2378 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2379 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2380 ExceptionTable extable(method); |
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|
2381 entry->start_pc = extable.start_pc(entry_index); |
|
8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
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diff
changeset
|
2382 entry->end_pc = extable.end_pc(entry_index); |
|
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|
2383 entry->handler_pc = extable.handler_pc(entry_index); |
|
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changeset
|
2384 entry->catchType = extable.catch_type_index(entry_index); |
| 0 | 2385 JVM_END |
| 2386 | |
| 2387 | |
| 2388 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
| 2389 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
|
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|
2390 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2391 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2392 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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changeset
|
2393 return method->exception_table_length(); |
| 0 | 2394 JVM_END |
| 2395 | |
| 2396 | |
| 2397 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
| 2398 JVMWrapper("JVM_GetMethodIxModifiers"); | |
|
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|
2399 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2400 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2401 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2402 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
| 0 | 2403 JVM_END |
| 2404 | |
| 2405 | |
| 2406 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
| 2407 JVMWrapper("JVM_GetFieldIxModifiers"); | |
|
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|
2408 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2409 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2410 return InstanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
| 0 | 2411 JVM_END |
| 2412 | |
| 2413 | |
| 2414 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
| 2415 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
|
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|
2416 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2417 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2418 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2419 return method->max_locals(); |
| 0 | 2420 JVM_END |
| 2421 | |
| 2422 | |
| 2423 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
| 2424 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
|
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|
2425 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2426 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2427 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2428 return method->size_of_parameters(); |
| 0 | 2429 JVM_END |
| 2430 | |
| 2431 | |
| 2432 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
| 2433 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
|
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|
2434 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2435 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2436 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2437 return method->verifier_max_stack(); |
| 0 | 2438 JVM_END |
| 2439 | |
| 2440 | |
| 2441 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
| 2442 JVMWrapper("JVM_IsConstructorIx"); | |
| 2443 ResourceMark rm(THREAD); | |
|
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|
2444 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2445 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2446 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2447 return method->name() == vmSymbols::object_initializer_name(); |
| 0 | 2448 JVM_END |
| 2449 | |
| 2450 | |
|
7958
815957d0203e
8004967: Default method cause VerifyError: Illegal use of nonvirtual
acorn
parents:
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diff
changeset
|
2451 JVM_QUICK_ENTRY(jboolean, JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cls, int method_index)) |
|
815957d0203e
8004967: Default method cause VerifyError: Illegal use of nonvirtual
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changeset
|
2452 JVMWrapper("JVM_IsVMGeneratedMethodIx"); |
|
815957d0203e
8004967: Default method cause VerifyError: Illegal use of nonvirtual
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diff
changeset
|
2453 ResourceMark rm(THREAD); |
|
815957d0203e
8004967: Default method cause VerifyError: Illegal use of nonvirtual
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diff
changeset
|
2454 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
|
815957d0203e
8004967: Default method cause VerifyError: Illegal use of nonvirtual
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changeset
|
2455 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
815957d0203e
8004967: Default method cause VerifyError: Illegal use of nonvirtual
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changeset
|
2456 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
815957d0203e
8004967: Default method cause VerifyError: Illegal use of nonvirtual
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changeset
|
2457 return method->is_overpass(); |
|
815957d0203e
8004967: Default method cause VerifyError: Illegal use of nonvirtual
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changeset
|
2458 JVM_END |
|
815957d0203e
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changeset
|
2459 |
| 0 | 2460 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) |
| 2461 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
|
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changeset
|
2462 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2463 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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changeset
|
2464 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2465 return method->name()->as_utf8(); |
| 0 | 2466 JVM_END |
| 2467 | |
| 2468 | |
| 2469 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
| 2470 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
|
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changeset
|
2471 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2472 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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changeset
|
2473 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2474 return method->signature()->as_utf8(); |
| 0 | 2475 JVM_END |
| 2476 | |
| 2477 /** | |
| 2478 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
| 2479 * read entries in the constant pool. Since the old verifier always | |
| 2480 * works on a copy of the code, it will not see any rewriting that | |
| 2481 * may possibly occur in the middle of verification. So it is important | |
| 2482 * that nothing it calls tries to use the cpCache instead of the raw | |
| 2483 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
| 2484 */ | |
| 2485 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2486 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
|
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changeset
|
2487 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2488 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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changeset
|
2489 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2490 switch (cp->tag_at(cp_index).value()) { |
| 2491 case JVM_CONSTANT_Fieldref: | |
| 2492 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
| 2493 default: | |
| 2494 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
| 2495 } | |
| 2496 ShouldNotReachHere(); | |
| 2497 return NULL; | |
| 2498 JVM_END | |
| 2499 | |
| 2500 | |
| 2501 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2502 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
|
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changeset
|
2503 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2504 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2505 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2506 switch (cp->tag_at(cp_index).value()) { |
| 2507 case JVM_CONSTANT_InterfaceMethodref: | |
| 2508 case JVM_CONSTANT_Methodref: | |
|
1059
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6858164: invokedynamic code needs some cleanup (post-6655638)
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diff
changeset
|
2509 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2510 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
| 2511 default: | |
| 2512 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
| 2513 } | |
| 2514 ShouldNotReachHere(); | |
| 2515 return NULL; | |
| 2516 JVM_END | |
| 2517 | |
| 2518 | |
| 2519 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2520 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
|
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changeset
|
2521 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2522 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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changeset
|
2523 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2524 switch (cp->tag_at(cp_index).value()) { |
| 2525 case JVM_CONSTANT_InterfaceMethodref: | |
| 2526 case JVM_CONSTANT_Methodref: | |
|
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|
2527 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2528 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
| 2529 default: | |
| 2530 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
| 2531 } | |
| 2532 ShouldNotReachHere(); | |
| 2533 return NULL; | |
| 2534 JVM_END | |
| 2535 | |
| 2536 | |
| 2537 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2538 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
|
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changeset
|
2539 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2540 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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changeset
|
2541 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2542 switch (cp->tag_at(cp_index).value()) { |
| 2543 case JVM_CONSTANT_Fieldref: | |
| 2544 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
| 2545 default: | |
| 2546 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
| 2547 } | |
| 2548 ShouldNotReachHere(); | |
| 2549 return NULL; | |
| 2550 JVM_END | |
| 2551 | |
| 2552 | |
| 2553 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2554 JVMWrapper("JVM_GetCPClassNameUTF"); | |
|
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changeset
|
2555 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2556 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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changeset
|
2557 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
|
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diff
changeset
|
2558 Symbol* classname = cp->klass_name_at(cp_index); |
| 0 | 2559 return classname->as_utf8(); |
| 2560 JVM_END | |
| 2561 | |
| 2562 | |
| 2563 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2564 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
|
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changeset
|
2565 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2566 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2567 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2568 switch (cp->tag_at(cp_index).value()) { |
| 2569 case JVM_CONSTANT_Fieldref: { | |
| 2570 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
|
2177
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diff
changeset
|
2571 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2572 return classname->as_utf8(); |
| 2573 } | |
| 2574 default: | |
| 2575 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
| 2576 } | |
| 2577 ShouldNotReachHere(); | |
| 2578 return NULL; | |
| 2579 JVM_END | |
| 2580 | |
| 2581 | |
| 2582 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2583 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
|
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changeset
|
2584 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2585 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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changeset
|
2586 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2587 switch (cp->tag_at(cp_index).value()) { |
| 2588 case JVM_CONSTANT_Methodref: | |
| 2589 case JVM_CONSTANT_InterfaceMethodref: { | |
| 2590 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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diff
changeset
|
2591 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2592 return classname->as_utf8(); |
| 2593 } | |
| 2594 default: | |
| 2595 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
| 2596 } | |
| 2597 ShouldNotReachHere(); | |
| 2598 return NULL; | |
| 2599 JVM_END | |
| 2600 | |
| 2601 | |
| 3938 | 2602 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
| 0 | 2603 JVMWrapper("JVM_GetCPFieldModifiers"); |
|
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changeset
|
2604 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
|
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changeset
|
2605 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
| 0 | 2606 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 2607 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
|
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changeset
|
2608 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
|
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changeset
|
2609 ConstantPool* cp_called = InstanceKlass::cast(k_called)->constants(); |
| 0 | 2610 switch (cp->tag_at(cp_index).value()) { |
| 2611 case JVM_CONSTANT_Fieldref: { | |
|
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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2162
diff
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|
2612 Symbol* name = cp->uncached_name_ref_at(cp_index); |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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2162
diff
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|
2613 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
| 3938 | 2614 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
| 2615 if (fs.name() == name && fs.signature() == signature) { | |
| 2616 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
| 0 | 2617 } |
| 2618 } | |
| 2619 return -1; | |
| 2620 } | |
| 2621 default: | |
| 2622 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
| 2623 } | |
| 2624 ShouldNotReachHere(); | |
| 2625 return 0; | |
| 2626 JVM_END | |
| 2627 | |
| 2628 | |
| 2629 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
| 2630 JVMWrapper("JVM_GetCPMethodModifiers"); | |
|
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6964458: Reimplement class meta-data storage to use native memory
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6271
diff
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|
2631 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6271
diff
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|
2632 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
| 0 | 2633 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 2634 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
|
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6964458: Reimplement class meta-data storage to use native memory
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6271
diff
changeset
|
2635 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2636 switch (cp->tag_at(cp_index).value()) { |
| 2637 case JVM_CONSTANT_Methodref: | |
| 2638 case JVM_CONSTANT_InterfaceMethodref: { | |
|
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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2162
diff
changeset
|
2639 Symbol* name = cp->uncached_name_ref_at(cp_index); |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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2162
diff
changeset
|
2640 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
|
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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6271
diff
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|
2641 Array<Method*>* methods = InstanceKlass::cast(k_called)->methods(); |
| 0 | 2642 int methods_count = methods->length(); |
| 2643 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
|
2644 Method* method = methods->at(i); |
| 0 | 2645 if (method->name() == name && method->signature() == signature) { |
| 2646 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 2647 } | |
| 2648 } | |
| 2649 return -1; | |
| 2650 } | |
| 2651 default: | |
| 2652 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
| 2653 } | |
| 2654 ShouldNotReachHere(); | |
| 2655 return 0; | |
| 2656 JVM_END | |
| 2657 | |
| 2658 | |
| 2659 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
| 2660 | |
| 2661 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
| 2662 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
| 2663 JVM_END | |
| 2664 | |
| 2665 | |
| 2666 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
| 2667 JVMWrapper("JVM_IsSameClassPackage"); | |
| 2668 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
| 2669 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6271
diff
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|
2670 Klass* klass1 = java_lang_Class::as_Klass(class1_mirror); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6271
diff
changeset
|
2671 Klass* klass2 = java_lang_Class::as_Klass(class2_mirror); |
| 0 | 2672 return (jboolean) Reflection::is_same_class_package(klass1, klass2); |
| 2673 JVM_END | |
| 2674 | |
| 2675 | |
| 2676 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
| 2677 | |
| 2678 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
| 2679 JVMWrapper2("JVM_Open (%s)", fname); | |
| 2680 | |
| 2681 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2682 int result = os::open(fname, flags, mode); |
| 0 | 2683 if (result >= 0) { |
| 2684 return result; | |
| 2685 } else { | |
| 2686 switch(errno) { | |
| 2687 case EEXIST: | |
| 2688 return JVM_EEXIST; | |
| 2689 default: | |
| 2690 return -1; | |
| 2691 } | |
| 2692 } | |
| 2693 JVM_END | |
| 2694 | |
| 2695 | |
| 2696 JVM_LEAF(jint, JVM_Close(jint fd)) | |
| 2697 JVMWrapper2("JVM_Close (0x%x)", fd); | |
| 2698 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2699 return os::close(fd); |
| 0 | 2700 JVM_END |
| 2701 | |
| 2702 | |
| 2703 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
| 2704 JVMWrapper2("JVM_Read (0x%x)", fd); | |
| 2705 | |
| 2706 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2707 return (jint)os::restartable_read(fd, buf, nbytes); |
| 0 | 2708 JVM_END |
| 2709 | |
| 2710 | |
| 2711 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
| 2712 JVMWrapper2("JVM_Write (0x%x)", fd); | |
| 2713 | |
| 2714 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2715 return (jint)os::write(fd, buf, nbytes); |
| 0 | 2716 JVM_END |
| 2717 | |
| 2718 | |
| 2719 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
| 2720 JVMWrapper2("JVM_Available (0x%x)", fd); | |
| 2721 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2722 return os::available(fd, pbytes); |
| 0 | 2723 JVM_END |
| 2724 | |
| 2725 | |
| 2726 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
| 2727 JVMWrapper4("JVM_Lseek (0x%x, %Ld, %d)", fd, offset, whence); | |
| 2728 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2729 return os::lseek(fd, offset, whence); |
| 0 | 2730 JVM_END |
| 2731 | |
| 2732 | |
| 2733 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
| 2734 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
|
2735 return os::ftruncate(fd, length); |
| 0 | 2736 JVM_END |
| 2737 | |
| 2738 | |
| 2739 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
| 2740 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
| 2741 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2742 return os::fsync(fd); |
| 0 | 2743 JVM_END |
| 2744 | |
| 2745 | |
| 2746 // Printing support ////////////////////////////////////////////////// | |
| 2747 extern "C" { | |
| 2748 | |
| 2749 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { | |
| 2750 // see bug 4399518, 4417214 | |
| 2751 if ((intptr_t)count <= 0) return -1; | |
| 2752 return vsnprintf(str, count, fmt, args); | |
| 2753 } | |
| 2754 | |
| 2755 | |
| 2756 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { | |
| 2757 va_list args; | |
| 2758 int len; | |
| 2759 va_start(args, fmt); | |
| 2760 len = jio_vsnprintf(str, count, fmt, args); | |
| 2761 va_end(args); | |
| 2762 return len; | |
| 2763 } | |
| 2764 | |
| 2765 | |
| 2766 int jio_fprintf(FILE* f, const char *fmt, ...) { | |
| 2767 int len; | |
| 2768 va_list args; | |
| 2769 va_start(args, fmt); | |
| 2770 len = jio_vfprintf(f, fmt, args); | |
| 2771 va_end(args); | |
| 2772 return len; | |
| 2773 } | |
| 2774 | |
| 2775 | |
| 2776 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { | |
| 2777 if (Arguments::vfprintf_hook() != NULL) { | |
| 2778 return Arguments::vfprintf_hook()(f, fmt, args); | |
| 2779 } else { | |
| 2780 return vfprintf(f, fmt, args); | |
| 2781 } | |
| 2782 } | |
| 2783 | |
| 2784 | |
| 2191 | 2785 JNIEXPORT int jio_printf(const char *fmt, ...) { |
| 0 | 2786 int len; |
| 2787 va_list args; | |
| 2788 va_start(args, fmt); | |
| 2789 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
| 2790 va_end(args); | |
| 2791 return len; | |
| 2792 } | |
| 2793 | |
| 2794 | |
| 2795 // HotSpot specific jio method | |
| 2796 void jio_print(const char* s) { | |
| 2797 // Try to make this function as atomic as possible. | |
| 2798 if (Arguments::vfprintf_hook() != NULL) { | |
| 2799 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
| 2800 } else { | |
|
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
431
diff
changeset
|
2801 // 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
|
2802 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
| 0 | 2803 } |
| 2804 } | |
| 2805 | |
| 2806 } // Extern C | |
| 2807 | |
| 2808 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
| 2809 | |
| 2810 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
| 2811 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
| 2812 // OSThread objects. The exception to this rule is when the target object is the thread | |
| 2813 // doing the operation, in which case we know that the thread won't exit until the | |
| 2814 // operation is done (all exits being voluntary). There are a few cases where it is | |
| 2815 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
| 2816 // you are alive. While these can still happen, they are not subject to deadlocks if | |
| 2817 // the lock is held while the operation occurs (this is not the case for suspend, for | |
| 2818 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
| 2819 // implementation is local to this file, we always lock Threads_lock for that one. | |
| 2820 | |
| 2821 static void thread_entry(JavaThread* thread, TRAPS) { | |
| 2822 HandleMark hm(THREAD); | |
| 2823 Handle obj(THREAD, thread->threadObj()); | |
| 2824 JavaValue result(T_VOID); | |
| 2825 JavaCalls::call_virtual(&result, | |
| 2826 obj, | |
| 1142 | 2827 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
2828 vmSymbols::run_method_name(), |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
2829 vmSymbols::void_method_signature(), |
| 0 | 2830 THREAD); |
| 2831 } | |
| 2832 | |
| 2833 | |
| 2834 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
| 2835 JVMWrapper("JVM_StartThread"); | |
| 2836 JavaThread *native_thread = NULL; | |
| 2837 | |
| 2838 // We cannot hold the Threads_lock when we throw an exception, | |
| 2839 // due to rank ordering issues. Example: we might need to grab the | |
| 2840 // Heap_lock while we construct the exception. | |
| 2841 bool throw_illegal_thread_state = false; | |
| 2842 | |
| 2843 // We must release the Threads_lock before we can post a jvmti event | |
| 2844 // in Thread::start. | |
| 2845 { | |
| 2846 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
| 2847 // we operate. | |
| 2848 MutexLocker mu(Threads_lock); | |
| 2849 | |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2850 // 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
|
2851 // 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
|
2852 // 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
|
2853 // 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
|
2854 // (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
|
2855 // 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
|
2856 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
|
2857 throw_illegal_thread_state = true; |
| 0 | 2858 } else { |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2859 // 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
|
2860 // 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
|
2861 |
| 0 | 2862 jlong size = |
| 2863 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
| 2864 // Allocate the C++ Thread structure and create the native thread. The | |
| 2865 // stack size retrieved from java is signed, but the constructor takes | |
| 2866 // size_t (an unsigned type), so avoid passing negative values which would | |
| 2867 // result in really large stacks. | |
| 2868 size_t sz = size > 0 ? (size_t) size : 0; | |
| 2869 native_thread = new JavaThread(&thread_entry, sz); | |
| 2870 | |
| 2871 // At this point it may be possible that no osthread was created for the | |
| 2872 // JavaThread due to lack of memory. Check for this situation and throw | |
| 2873 // an exception if necessary. Eventually we may want to change this so | |
| 2874 // that we only grab the lock if the thread was created successfully - | |
| 2875 // then we can also do this check and throw the exception in the | |
| 2876 // JavaThread constructor. | |
| 2877 if (native_thread->osthread() != NULL) { | |
| 2878 // Note: the current thread is not being used within "prepare". | |
| 2879 native_thread->prepare(jthread); | |
| 2880 } | |
| 2881 } | |
| 2882 } | |
| 2883 | |
| 2884 if (throw_illegal_thread_state) { | |
| 2885 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
| 2886 } | |
| 2887 | |
| 2888 assert(native_thread != NULL, "Starting null thread?"); | |
| 2889 | |
| 2890 if (native_thread->osthread() == NULL) { | |
| 2891 // No one should hold a reference to the 'native_thread'. | |
| 2892 delete native_thread; | |
| 2893 if (JvmtiExport::should_post_resource_exhausted()) { | |
| 2894 JvmtiExport::post_resource_exhausted( | |
| 2895 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
| 14909 | 2896 "unable to create new native thread"); |
| 0 | 2897 } |
| 2898 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
| 14909 | 2899 "unable to create new native thread"); |
| 0 | 2900 } |
| 2901 | |
| 2902 Thread::start(native_thread); | |
| 2903 | |
| 2904 JVM_END | |
| 2905 | |
| 2906 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
| 2907 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
| 2908 // 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
|
2909 // same thread as the sender, no safepoint is needed. |
| 0 | 2910 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
| 2911 JVMWrapper("JVM_StopThread"); | |
| 2912 | |
| 2913 oop java_throwable = JNIHandles::resolve(throwable); | |
| 2914 if (java_throwable == NULL) { | |
| 2915 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 2916 } | |
| 2917 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2918 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
|
2919 Events::log_exception(JavaThread::current(), |
|
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4717
diff
changeset
|
2920 "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
|
2921 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
|
2922 // First check if thread is alive |
| 0 | 2923 if (receiver != NULL) { |
| 2924 // Check if exception is getting thrown at self (use oop equality, since the | |
| 2925 // target object might exit) | |
| 2926 if (java_thread == thread->threadObj()) { | |
| 2927 THROW_OOP(java_throwable); | |
| 2928 } else { | |
| 2929 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
| 2930 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
| 2931 } | |
| 2932 } | |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2933 else { |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2934 // Either: |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2935 // - 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
|
2936 // - 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
|
2937 // 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
|
2938 // 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
|
2939 // 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
|
2940 // 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
|
2941 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
|
2942 } |
| 0 | 2943 JVM_END |
| 2944 | |
| 2945 | |
| 2946 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
| 2947 JVMWrapper("JVM_IsThreadAlive"); | |
| 2948 | |
| 2949 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
| 2950 return java_lang_Thread::is_alive(thread_oop); | |
| 2951 JVM_END | |
| 2952 | |
| 2953 | |
| 2954 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
| 2955 JVMWrapper("JVM_SuspendThread"); | |
| 2956 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2957 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
| 2958 | |
| 2959 if (receiver != NULL) { | |
| 2960 // thread has run and has not exited (still on threads list) | |
| 2961 | |
| 2962 { | |
| 2963 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
| 2964 if (receiver->is_external_suspend()) { | |
| 2965 // Don't allow nested external suspend requests. We can't return | |
| 2966 // an error from this interface so just ignore the problem. | |
| 2967 return; | |
| 2968 } | |
| 2969 if (receiver->is_exiting()) { // thread is in the process of exiting | |
| 2970 return; | |
| 2971 } | |
| 2972 receiver->set_external_suspend(); | |
| 2973 } | |
| 2974 | |
| 2975 // java_suspend() will catch threads in the process of exiting | |
| 2976 // and will ignore them. | |
| 2977 receiver->java_suspend(); | |
| 2978 | |
| 2979 // It would be nice to have the following assertion in all the | |
| 2980 // time, but it is possible for a racing resume request to have | |
| 2981 // resumed this thread right after we suspended it. Temporarily | |
| 2982 // enable this assertion if you are chasing a different kind of | |
| 2983 // bug. | |
| 2984 // | |
| 2985 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
| 2986 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
| 2987 } | |
| 2988 JVM_END | |
| 2989 | |
| 2990 | |
| 2991 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
| 2992 JVMWrapper("JVM_ResumeThread"); | |
| 2993 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
| 2994 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
| 2995 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
| 2996 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
| 2997 // looks at it. | |
| 2998 MutexLocker ml(Threads_lock); | |
| 2999 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3000 if (thr != NULL) { | |
| 3001 // the thread has run and is not in the process of exiting | |
| 3002 thr->java_resume(); | |
| 3003 } | |
| 3004 JVM_END | |
| 3005 | |
| 3006 | |
| 3007 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
| 3008 JVMWrapper("JVM_SetThreadPriority"); | |
| 3009 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3010 MutexLocker ml(Threads_lock); | |
| 3011 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3012 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
| 3013 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 3014 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
| 3015 Thread::set_priority(thr, (ThreadPriority)prio); | |
| 3016 } | |
| 3017 JVM_END | |
| 3018 | |
| 3019 | |
| 3020 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
| 3021 JVMWrapper("JVM_Yield"); | |
| 3022 if (os::dont_yield()) return; | |
| 14909 | 3023 #ifndef USDT2 |
| 3024 HS_DTRACE_PROBE0(hotspot, thread__yield); | |
| 3025 #else /* USDT2 */ | |
| 4006 | 3026 HOTSPOT_THREAD_YIELD(); |
| 14909 | 3027 #endif /* USDT2 */ |
| 0 | 3028 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
| 3029 // Critical for similar threading behaviour | |
| 3030 if (ConvertYieldToSleep) { | |
| 3031 os::sleep(thread, MinSleepInterval, false); | |
| 3032 } else { | |
| 3033 os::yield(); | |
| 3034 } | |
| 3035 JVM_END | |
| 3036 | |
| 3037 | |
| 3038 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
| 3039 JVMWrapper("JVM_Sleep"); | |
| 3040 | |
| 3041 if (millis < 0) { | |
| 3042 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
| 3043 } | |
| 3044 | |
| 3045 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
| 3046 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 3047 } | |
| 3048 | |
| 3049 // Save current thread state and restore it at the end of this block. | |
| 3050 // And set new thread state to SLEEPING. | |
| 3051 JavaThreadSleepState jtss(thread); | |
| 3052 | |
| 14909 | 3053 #ifndef USDT2 |
| 3054 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); | |
| 3055 #else /* USDT2 */ | |
| 3056 HOTSPOT_THREAD_SLEEP_BEGIN( | |
| 3057 millis); | |
| 3058 #endif /* USDT2 */ | |
|
1324
e392695de029
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1144
diff
changeset
|
3059 |
| 10405 | 3060 EventThreadSleep event; |
| 3061 | |
| 0 | 3062 if (millis == 0) { |
| 3063 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
| 3064 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
| 3065 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
| 3066 // for SOLARIS | |
| 3067 if (ConvertSleepToYield) { | |
| 3068 os::yield(); | |
| 3069 } else { | |
| 3070 ThreadState old_state = thread->osthread()->get_state(); | |
| 3071 thread->osthread()->set_state(SLEEPING); | |
| 3072 os::sleep(thread, MinSleepInterval, false); | |
| 3073 thread->osthread()->set_state(old_state); | |
| 3074 } | |
| 3075 } else { | |
| 3076 ThreadState old_state = thread->osthread()->get_state(); | |
| 3077 thread->osthread()->set_state(SLEEPING); | |
| 3078 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
| 3079 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
| 3080 // us while we were sleeping. We do not overwrite those. | |
| 3081 if (!HAS_PENDING_EXCEPTION) { | |
| 10405 | 3082 if (event.should_commit()) { |
| 3083 event.set_time(millis); | |
| 3084 event.commit(); | |
| 3085 } | |
| 14909 | 3086 #ifndef USDT2 |
| 3087 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); | |
| 3088 #else /* USDT2 */ | |
| 3089 HOTSPOT_THREAD_SLEEP_END( | |
| 3090 1); | |
| 3091 #endif /* USDT2 */ | |
| 0 | 3092 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
| 3093 // to properly restore the thread state. That's likely wrong. | |
| 3094 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 3095 } | |
| 3096 } | |
| 3097 thread->osthread()->set_state(old_state); | |
| 3098 } | |
| 10405 | 3099 if (event.should_commit()) { |
| 3100 event.set_time(millis); | |
| 3101 event.commit(); | |
| 3102 } | |
| 14909 | 3103 #ifndef USDT2 |
| 3104 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); | |
| 3105 #else /* USDT2 */ | |
| 3106 HOTSPOT_THREAD_SLEEP_END( | |
| 3107 0); | |
| 3108 #endif /* USDT2 */ | |
| 0 | 3109 JVM_END |
| 3110 | |
| 3111 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
| 3112 JVMWrapper("JVM_CurrentThread"); | |
| 3113 oop jthread = thread->threadObj(); | |
| 3114 assert (thread != NULL, "no current thread!"); | |
| 3115 return JNIHandles::make_local(env, jthread); | |
| 3116 JVM_END | |
| 3117 | |
| 3118 | |
| 3119 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
| 3120 JVMWrapper("JVM_CountStackFrames"); | |
| 3121 | |
| 3122 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3123 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3124 bool throw_illegal_thread_state = false; | |
| 3125 int count = 0; | |
| 3126 | |
| 3127 { | |
| 3128 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 3129 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 3130 // acquire of the lock | |
| 3131 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3132 | |
| 3133 if (thr == NULL) { | |
| 3134 // do nothing | |
| 3135 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
| 3136 // Check whether this java thread has been suspended already. If not, throws | |
| 3137 // IllegalThreadStateException. We defer to throw that exception until | |
| 3138 // Threads_lock is released since loading exception class has to leave VM. | |
| 3139 // The correct way to test a thread is actually suspended is | |
| 3140 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
| 3141 // the Threads_lock. The above tests are sufficient for our purposes | |
| 3142 // provided the walkability of the stack is stable - which it isn't | |
| 3143 // 100% but close enough for most practical purposes. | |
| 3144 throw_illegal_thread_state = true; | |
| 3145 } else { | |
| 3146 // Count all java activation, i.e., number of vframes | |
| 3147 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
| 3148 // Native frames are not counted | |
| 3149 if (!vfst.method()->is_native()) count++; | |
| 3150 } | |
| 3151 } | |
| 3152 } | |
| 3153 | |
| 3154 if (throw_illegal_thread_state) { | |
| 3155 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
| 3156 "this thread is not suspended"); | |
| 3157 } | |
| 3158 return count; | |
| 3159 JVM_END | |
| 3160 | |
| 3161 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
| 3162 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
| 3163 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
| 3164 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
| 3165 // outside the critical section. Threads_lock is hot so we want to minimize | |
| 3166 // the hold-time. A cleaner interface would be to decompose interrupt into | |
| 3167 // two steps. The 1st phase, performed under Threads_lock, would return | |
| 3168 // a closure that'd be invoked after Threads_lock was dropped. | |
| 3169 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
| 3170 // admit spurious wakeups. | |
| 3171 | |
| 3172 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
| 3173 JVMWrapper("JVM_Interrupt"); | |
| 3174 | |
| 3175 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3176 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3177 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 3178 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 3179 // acquire of the lock | |
| 3180 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3181 if (thr != NULL) { | |
| 3182 Thread::interrupt(thr); | |
| 3183 } | |
| 3184 JVM_END | |
| 3185 | |
| 3186 | |
| 3187 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
| 3188 JVMWrapper("JVM_IsInterrupted"); | |
| 3189 | |
| 3190 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3191 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3192 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 3193 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 3194 // acquire of the lock | |
| 3195 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3196 if (thr == NULL) { | |
| 3197 return JNI_FALSE; | |
| 3198 } else { | |
| 3199 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
| 3200 } | |
| 3201 JVM_END | |
| 3202 | |
| 3203 | |
| 3204 // Return true iff the current thread has locked the object passed in | |
| 3205 | |
| 3206 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
| 3207 JVMWrapper("JVM_HoldsLock"); | |
| 3208 assert(THREAD->is_Java_thread(), "sanity check"); | |
| 3209 if (obj == NULL) { | |
| 3210 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
| 3211 } | |
| 3212 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
| 3213 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
| 3214 JVM_END | |
| 3215 | |
| 3216 | |
| 3217 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
| 3218 JVMWrapper("JVM_DumpAllStacks"); | |
| 3219 VM_PrintThreads op; | |
| 3220 VMThread::execute(&op); | |
| 3221 if (JvmtiExport::should_post_data_dump()) { | |
| 3222 JvmtiExport::post_data_dump(); | |
| 3223 } | |
| 3224 JVM_END | |
| 3225 | |
| 4006 | 3226 JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name)) |
| 3227 JVMWrapper("JVM_SetNativeThreadName"); | |
| 3228 ResourceMark rm(THREAD); | |
| 3229 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3230 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 3231 // Thread naming only supported for the current thread, doesn't work for | |
| 3232 // target threads. | |
| 3233 if (Thread::current() == thr && !thr->has_attached_via_jni()) { | |
| 3234 // we don't set the name of an attached thread to avoid stepping | |
| 3235 // on other programs | |
| 3236 const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
| 3237 os::set_native_thread_name(thread_name); | |
| 3238 } | |
| 3239 JVM_END | |
| 0 | 3240 |
| 3241 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
| 3242 | |
| 3243 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
| 3244 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
| 3245 if (jthread->privileged_stack_top() == NULL) return false; | |
| 3246 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
| 3247 oop loader = jthread->privileged_stack_top()->class_loader(); | |
| 3248 if (loader == NULL) return true; | |
| 3249 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
| 3250 if (trusted) return true; | |
| 3251 } | |
| 3252 return false; | |
| 3253 } | |
| 3254 | |
| 3255 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
| 3256 JVMWrapper("JVM_CurrentLoadedClass"); | |
| 3257 ResourceMark rm(THREAD); | |
| 3258 | |
| 3259 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3260 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3261 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3262 if (trusted) return NULL; | |
| 3263 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3264 Method* m = vfst.method(); |
| 0 | 3265 if (!m->is_native()) { |
|
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3266 InstanceKlass* holder = m->method_holder(); |
|
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3267 oop loader = holder->class_loader(); |
| 0 | 3268 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
parents:
6831
diff
changeset
|
3269 return (jclass) JNIHandles::make_local(env, holder->java_mirror()); |
| 0 | 3270 } |
| 3271 } | |
| 3272 } | |
| 3273 return NULL; | |
| 3274 JVM_END | |
| 3275 | |
| 3276 | |
| 3277 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
| 3278 JVMWrapper("JVM_CurrentClassLoader"); | |
| 3279 ResourceMark rm(THREAD); | |
| 3280 | |
| 3281 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3282 | |
| 3283 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3284 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3285 if (trusted) return NULL; | |
| 3286 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3287 Method* m = vfst.method(); |
| 0 | 3288 if (!m->is_native()) { |
|
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3289 InstanceKlass* holder = m->method_holder(); |
| 0 | 3290 assert(holder->is_klass(), "just checking"); |
|
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3291 oop loader = holder->class_loader(); |
| 0 | 3292 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
| 3293 return JNIHandles::make_local(env, loader); | |
| 3294 } | |
| 3295 } | |
| 3296 } | |
| 3297 return NULL; | |
| 3298 JVM_END | |
| 3299 | |
| 3300 | |
| 3301 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
| 3302 JVMWrapper("JVM_GetClassContext"); | |
| 3303 ResourceMark rm(THREAD); | |
| 3304 JvmtiVMObjectAllocEventCollector oam; | |
|
8866
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
3305 vframeStream vfst(thread); |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
3306 |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
3307 if (SystemDictionary::reflect_CallerSensitive_klass() != NULL) { |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
3308 // This must only be called from SecurityManager.getClassContext |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
3309 Method* m = vfst.method(); |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
3310 if (!(m->method_holder() == SystemDictionary::SecurityManager_klass() && |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
3311 m->name() == vmSymbols::getClassContext_name() && |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
3312 m->signature() == vmSymbols::void_class_array_signature())) { |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
3313 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
twisti
parents:
8031
diff
changeset
|
3314 } |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
3315 } |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
3316 |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
3317 // Collect method holders |
|
11001
c52abc8a0b08
8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
drchase
parents:
10343
diff
changeset
|
3318 GrowableArray<KlassHandle>* klass_array = new GrowableArray<KlassHandle>(); |
|
8866
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
3319 for (; !vfst.at_end(); vfst.security_next()) { |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
3320 Method* m = vfst.method(); |
| 0 | 3321 // Native frames are not returned |
|
8866
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
3322 if (!m->is_ignored_by_security_stack_walk() && !m->is_native()) { |
|
16885e702c88
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8031
diff
changeset
|
3323 Klass* holder = m->method_holder(); |
| 0 | 3324 assert(holder->is_klass(), "just checking"); |
|
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c52abc8a0b08
8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
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parents:
10343
diff
changeset
|
3325 klass_array->append(holder); |
| 0 | 3326 } |
| 3327 } | |
| 3328 | |
| 3329 // Create result array of type [Ljava/lang/Class; | |
|
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10343
diff
changeset
|
3330 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), klass_array->length(), CHECK_NULL); |
| 0 | 3331 // Fill in mirrors corresponding to method holders |
|
11001
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8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
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10343
diff
changeset
|
3332 for (int i = 0; i < klass_array->length(); i++) { |
|
c52abc8a0b08
8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
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10343
diff
changeset
|
3333 result->obj_at_put(i, klass_array->at(i)->java_mirror()); |
| 0 | 3334 } |
| 3335 | |
| 3336 return (jobjectArray) JNIHandles::make_local(env, result); | |
| 3337 JVM_END | |
| 3338 | |
| 3339 | |
| 3340 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
| 3341 JVMWrapper("JVM_ClassDepth"); | |
| 3342 ResourceMark rm(THREAD); | |
| 3343 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 3344 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
| 3345 | |
| 3346 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
|
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coleenp
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2162
diff
changeset
|
3347 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
3348 if (class_name_sym == NULL) { |
| 0 | 3349 return -1; |
| 3350 } | |
| 3351 | |
| 3352 int depth = 0; | |
| 3353 | |
| 3354 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3355 if (!vfst.method()->is_native()) { | |
|
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3356 InstanceKlass* holder = vfst.method()->method_holder(); |
| 0 | 3357 assert(holder->is_klass(), "just checking"); |
|
6940
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8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
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6831
diff
changeset
|
3358 if (holder->name() == class_name_sym) { |
| 0 | 3359 return depth; |
| 3360 } | |
| 3361 depth++; | |
| 3362 } | |
| 3363 } | |
| 3364 return -1; | |
| 3365 JVM_END | |
| 3366 | |
| 3367 | |
| 3368 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
| 3369 JVMWrapper("JVM_ClassLoaderDepth"); | |
| 3370 ResourceMark rm(THREAD); | |
| 3371 int depth = 0; | |
| 3372 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3373 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
| 3374 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3375 if (trusted) return -1; | |
| 3376 | |
|
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6964458: Reimplement class meta-data storage to use native memory
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6271
diff
changeset
|
3377 Method* m = vfst.method(); |
| 0 | 3378 if (!m->is_native()) { |
|
6940
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6831
diff
changeset
|
3379 InstanceKlass* holder = m->method_holder(); |
| 0 | 3380 assert(holder->is_klass(), "just checking"); |
|
6940
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coleenp
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6831
diff
changeset
|
3381 oop loader = holder->class_loader(); |
| 0 | 3382 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
| 3383 return depth; | |
| 3384 } | |
| 3385 depth++; | |
| 3386 } | |
| 3387 } | |
| 3388 return -1; | |
| 3389 JVM_END | |
| 3390 | |
| 3391 | |
| 3392 // java.lang.Package //////////////////////////////////////////////////////////////// | |
| 3393 | |
| 3394 | |
| 3395 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
| 3396 JVMWrapper("JVM_GetSystemPackage"); | |
| 3397 ResourceMark rm(THREAD); | |
| 3398 JvmtiVMObjectAllocEventCollector oam; | |
| 3399 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
| 3400 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
| 3401 return (jstring) JNIHandles::make_local(result); | |
| 3402 JVM_END | |
| 3403 | |
| 3404 | |
| 3405 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
| 3406 JVMWrapper("JVM_GetSystemPackages"); | |
| 3407 JvmtiVMObjectAllocEventCollector oam; | |
| 3408 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
| 3409 return (jobjectArray) JNIHandles::make_local(result); | |
| 3410 JVM_END | |
| 3411 | |
| 3412 | |
| 3413 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
| 3414 | |
|
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diff
changeset
|
3415 bool force_verify_field_access(Klass* current_class, Klass* field_class, AccessFlags access, bool classloader_only) { |
| 0 | 3416 if (current_class == NULL) { |
| 3417 return true; | |
| 3418 } | |
| 3419 if ((current_class == field_class) || access.is_public()) { | |
| 3420 return true; | |
| 3421 } | |
| 3422 | |
| 3423 if (access.is_protected()) { | |
| 3424 // See if current_class is a subclass of field_class | |
| 6983 | 3425 if (current_class->is_subclass_of(field_class)) { |
| 0 | 3426 return true; |
| 3427 } | |
| 3428 } | |
| 3429 | |
|
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da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6271
diff
changeset
|
3430 return (!access.is_private() && InstanceKlass::cast(current_class)->is_same_class_package(field_class)); |
| 0 | 3431 } |
| 3432 | |
| 3433 | |
| 3434 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
| 3435 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
| 3436 JVMWrapper("JVM_AllocateNewObject"); | |
| 3437 JvmtiVMObjectAllocEventCollector oam; | |
| 3438 // Receiver is not used | |
| 3439 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
| 3440 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
| 3441 | |
| 3442 // Cannot instantiate primitive types | |
| 3443 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
| 3444 ResourceMark rm(THREAD); | |
| 3445 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3446 } | |
| 3447 | |
| 3448 // Arrays not allowed here, must use JVM_AllocateNewArray | |
| 6983 | 3449 if (java_lang_Class::as_Klass(curr_mirror)->oop_is_array() || |
| 3450 java_lang_Class::as_Klass(init_mirror)->oop_is_array()) { | |
| 0 | 3451 ResourceMark rm(THREAD); |
| 3452 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3453 } | |
| 3454 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3455 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_Klass(curr_mirror)); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3456 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_Klass(init_mirror)); |
| 0 | 3457 |
| 3458 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
| 3459 | |
| 3460 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
| 3461 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
| 3462 | |
| 3463 // Make sure klass is initialized, since we are about to instantiate one of them. | |
| 3464 curr_klass->initialize(CHECK_NULL); | |
| 3465 | |
| 3466 methodHandle m (THREAD, | |
| 3467 init_klass->find_method(vmSymbols::object_initializer_name(), | |
| 3468 vmSymbols::void_method_signature())); | |
| 3469 if (m.is_null()) { | |
| 3470 ResourceMark rm(THREAD); | |
| 3471 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
| 6983 | 3472 Method::name_and_sig_as_C_string(init_klass(), |
| 0 | 3473 vmSymbols::object_initializer_name(), |
| 3474 vmSymbols::void_method_signature())); | |
| 3475 } | |
| 3476 | |
| 3477 if (curr_klass == init_klass && !m->is_public()) { | |
| 3478 // Calling the constructor for class 'curr_klass'. | |
| 3479 // Only allow calls to a public no-arg constructor. | |
| 3480 // This path corresponds to creating an Externalizable object. | |
| 3481 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3482 } | |
| 3483 | |
| 3484 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
| 3485 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
| 3486 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3487 } | |
| 3488 | |
| 3489 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
| 3490 // Call constructor m. This might call a constructor higher up in the hierachy | |
| 3491 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
| 3492 | |
| 3493 return JNIHandles::make_local(obj()); | |
| 3494 JVM_END | |
| 3495 | |
| 3496 | |
| 3497 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
| 3498 JVMWrapper("JVM_AllocateNewArray"); | |
| 3499 JvmtiVMObjectAllocEventCollector oam; | |
| 3500 oop mirror = JNIHandles::resolve_non_null(currClass); | |
| 3501 | |
| 3502 if (java_lang_Class::is_primitive(mirror)) { | |
| 3503 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3504 } | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3505 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 3506 oop result; |
| 3507 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3508 if (k->oop_is_typeArray()) { |
| 0 | 3509 // typeArray |
|
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6725
diff
changeset
|
3510 result = TypeArrayKlass::cast(k)->allocate(length, CHECK_NULL); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3511 } else if (k->oop_is_objArray()) { |
| 0 | 3512 // objArray |
|
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6725
diff
changeset
|
3513 ObjArrayKlass* oak = ObjArrayKlass::cast(k); |
| 0 | 3514 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) |
| 3515 result = oak->allocate(length, CHECK_NULL); | |
| 3516 } else { | |
| 3517 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3518 } | |
| 3519 return JNIHandles::make_local(env, result); | |
| 3520 JVM_END | |
| 3521 | |
| 3522 | |
| 3523 // Return the first non-null class loader up the execution stack, or null | |
| 3524 // if only code from the null class loader is on the stack. | |
| 3525 | |
| 3526 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
| 3527 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3528 // UseNewReflection | |
| 3529 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
|
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3530 oop loader = vfst.method()->method_holder()->class_loader(); |
| 0 | 3531 if (loader != NULL) { |
| 3532 return JNIHandles::make_local(env, loader); | |
| 3533 } | |
| 3534 } | |
| 3535 return NULL; | |
| 3536 JVM_END | |
| 3537 | |
| 3538 | |
| 3539 // Load a class relative to the most recent class on the stack with a non-null | |
| 3540 // classloader. | |
| 3541 // This function has been deprecated and should not be considered part of the | |
| 3542 // specified JVM interface. | |
| 3543 | |
| 3544 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
| 3545 jclass currClass, jstring currClassName)) | |
| 3546 JVMWrapper("JVM_LoadClass0"); | |
| 3547 // Receiver is not used | |
| 3548 ResourceMark rm(THREAD); | |
| 3549 | |
| 3550 // Class name argument is not guaranteed to be in internal format | |
| 3551 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
| 3552 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
| 3553 | |
| 3554 const char* str = java_lang_String::as_utf8_string(string()); | |
| 3555 | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
3556 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
| 0 | 3557 // It's impossible to create this class; the name cannot fit |
| 3558 // into the constant pool. | |
| 3559 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
| 3560 } | |
| 3561 | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
3562 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
| 0 | 3563 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
| 3564 // Find the most recent class on the stack with a non-null classloader | |
| 3565 oop loader = NULL; | |
| 3566 oop protection_domain = NULL; | |
| 3567 if (curr_klass.is_null()) { | |
| 3568 for (vframeStream vfst(thread); | |
| 3569 !vfst.at_end() && loader == NULL; | |
| 3570 vfst.next()) { | |
| 3571 if (!vfst.method()->is_native()) { | |
|
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3572 InstanceKlass* holder = vfst.method()->method_holder(); |
|
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3573 loader = holder->class_loader(); |
|
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3574 protection_domain = holder->protection_domain(); |
| 0 | 3575 } |
| 3576 } | |
| 3577 } else { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3578 Klass* curr_klass_oop = java_lang_Class::as_Klass(curr_klass()); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3579 loader = InstanceKlass::cast(curr_klass_oop)->class_loader(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6271
diff
changeset
|
3580 protection_domain = InstanceKlass::cast(curr_klass_oop)->protection_domain(); |
| 0 | 3581 } |
| 3582 Handle h_loader(THREAD, loader); | |
| 3583 Handle h_prot (THREAD, protection_domain); | |
|
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3584 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
|
3585 false, thread); |
|
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3586 if (TraceClassResolution && result != NULL) { |
|
6725
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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6271
diff
changeset
|
3587 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
|
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
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579
diff
changeset
|
3588 } |
|
715dceaa89b7
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acorn
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579
diff
changeset
|
3589 return result; |
| 0 | 3590 JVM_END |
| 3591 | |
| 3592 | |
| 3593 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
| 3594 | |
| 3595 | |
| 3596 // resolve array handle and check arguments | |
| 3597 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
| 3598 if (arr == NULL) { | |
| 3599 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 3600 } | |
| 3601 oop a = JNIHandles::resolve_non_null(arr); | |
|
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diff
changeset
|
3602 if (!a->is_array() || (type_array_only && !a->is_typeArray())) { |
| 0 | 3603 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); |
| 3604 } | |
| 3605 return arrayOop(a); | |
| 3606 } | |
| 3607 | |
| 3608 | |
| 3609 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
| 3610 JVMWrapper("JVM_GetArrayLength"); | |
| 3611 arrayOop a = check_array(env, arr, false, CHECK_0); | |
| 3612 return a->length(); | |
| 3613 JVM_END | |
| 3614 | |
| 3615 | |
| 3616 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
| 3617 JVMWrapper("JVM_Array_Get"); | |
| 3618 JvmtiVMObjectAllocEventCollector oam; | |
| 3619 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
| 3620 jvalue value; | |
| 3621 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
| 3622 oop box = Reflection::box(&value, type, CHECK_NULL); | |
| 3623 return JNIHandles::make_local(env, box); | |
| 3624 JVM_END | |
| 3625 | |
| 3626 | |
| 3627 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
| 3628 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
| 3629 jvalue value; | |
| 3630 value.i = 0; // to initialize value before getting used in CHECK | |
| 3631 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
| 3632 assert(a->is_typeArray(), "just checking"); | |
| 3633 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
| 3634 BasicType wide_type = (BasicType) wCode; | |
| 3635 if (type != wide_type) { | |
| 3636 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
| 3637 } | |
| 3638 return value; | |
| 3639 JVM_END | |
| 3640 | |
| 3641 | |
| 3642 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
| 3643 JVMWrapper("JVM_SetArrayElement"); | |
| 3644 arrayOop a = check_array(env, arr, false, CHECK); | |
| 3645 oop box = JNIHandles::resolve(val); | |
| 3646 jvalue value; | |
| 3647 value.i = 0; // to initialize value before getting used in CHECK | |
| 3648 BasicType value_type; | |
| 3649 if (a->is_objArray()) { | |
| 3650 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
| 3651 value_type = Reflection::unbox_for_regular_object(box, &value); | |
| 3652 } else { | |
| 3653 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
| 3654 } | |
| 3655 Reflection::array_set(&value, a, index, value_type, CHECK); | |
| 3656 JVM_END | |
| 3657 | |
| 3658 | |
| 3659 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
| 3660 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
| 3661 arrayOop a = check_array(env, arr, true, CHECK); | |
| 3662 assert(a->is_typeArray(), "just checking"); | |
| 3663 BasicType value_type = (BasicType) vCode; | |
| 3664 Reflection::array_set(&v, a, index, value_type, CHECK); | |
| 3665 JVM_END | |
| 3666 | |
| 3667 | |
| 3668 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
| 3669 JVMWrapper("JVM_NewArray"); | |
| 3670 JvmtiVMObjectAllocEventCollector oam; | |
| 3671 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3672 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
| 3673 return JNIHandles::make_local(env, result); | |
| 3674 JVM_END | |
| 3675 | |
| 3676 | |
| 3677 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
| 3678 JVMWrapper("JVM_NewMultiArray"); | |
| 3679 JvmtiVMObjectAllocEventCollector oam; | |
| 3680 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
| 3681 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3682 assert(dim_array->is_typeArray(), "just checking"); | |
| 3683 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
| 3684 return JNIHandles::make_local(env, result); | |
| 3685 JVM_END | |
| 3686 | |
| 3687 | |
| 3688 // Networking library support //////////////////////////////////////////////////////////////////// | |
| 3689 | |
| 3690 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
| 3691 JVMWrapper("JVM_InitializeSocketLibrary"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3692 return 0; |
| 0 | 3693 JVM_END |
| 3694 | |
| 3695 | |
| 3696 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
| 3697 JVMWrapper("JVM_Socket"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3698 return os::socket(domain, type, protocol); |
| 0 | 3699 JVM_END |
| 3700 | |
| 3701 | |
| 3702 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
| 3703 JVMWrapper2("JVM_SocketClose (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::socket_close(fd); |
| 0 | 3706 JVM_END |
| 3707 | |
| 3708 | |
| 3709 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
| 3710 JVMWrapper2("JVM_SocketShutdown (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::socket_shutdown(fd, howto); |
| 0 | 3713 JVM_END |
| 3714 | |
| 3715 | |
| 3716 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3717 JVMWrapper2("JVM_Recv (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::recv(fd, buf, (size_t)nBytes, (uint)flags); |
| 0 | 3720 JVM_END |
| 3721 | |
| 3722 | |
| 3723 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3724 JVMWrapper2("JVM_Send (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::send(fd, buf, (size_t)nBytes, (uint)flags); |
| 0 | 3727 JVM_END |
| 3728 | |
| 3729 | |
| 3730 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
| 3731 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
| 3732 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3733 return os::timeout(fd, timeout); |
| 0 | 3734 JVM_END |
| 3735 | |
| 3736 | |
| 3737 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
| 3738 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
| 3739 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3740 return os::listen(fd, count); |
| 0 | 3741 JVM_END |
| 3742 | |
| 3743 | |
| 3744 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
| 3745 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
| 3746 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3747 return os::connect(fd, him, (socklen_t)len); |
| 0 | 3748 JVM_END |
| 3749 | |
| 3750 | |
| 3751 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
| 3752 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
| 3753 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3754 return os::bind(fd, him, (socklen_t)len); |
| 0 | 3755 JVM_END |
| 3756 | |
| 3757 | |
| 3758 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
| 3759 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
| 3760 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3761 socklen_t socklen = (socklen_t)(*len); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3762 jint result = os::accept(fd, him, &socklen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3763 *len = (jint)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3764 return result; |
| 0 | 3765 JVM_END |
| 3766 | |
| 3767 | |
| 3768 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
| 3769 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
| 3770 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3771 socklen_t socklen = (socklen_t)(*fromlen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3772 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
|
3773 *fromlen = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3774 return result; |
| 0 | 3775 JVM_END |
| 3776 | |
| 3777 | |
| 3778 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
| 3779 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
| 3780 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3781 socklen_t socklen = (socklen_t)(*len); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3782 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
|
3783 *len = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3784 return result; |
| 0 | 3785 JVM_END |
| 3786 | |
| 3787 | |
| 3788 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
| 3789 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
| 3790 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3791 return os::sendto(fd, buf, (size_t)len, (uint)flags, to, (socklen_t)tolen); |
| 0 | 3792 JVM_END |
| 3793 | |
| 3794 | |
| 3795 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
| 3796 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
| 3797 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3798 return os::socket_available(fd, pbytes); |
| 0 | 3799 JVM_END |
| 3800 | |
| 3801 | |
| 3802 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
| 3803 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
| 3804 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3805 socklen_t socklen = (socklen_t)(*optlen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3806 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
|
3807 *optlen = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3808 return result; |
| 0 | 3809 JVM_END |
| 3810 | |
| 3811 | |
| 3812 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
| 3813 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
| 3814 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3815 return os::set_sock_opt(fd, level, optname, optval, (socklen_t)optlen); |
| 0 | 3816 JVM_END |
| 3817 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3818 |
| 0 | 3819 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) |
| 3820 JVMWrapper("JVM_GetHostName"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3821 return os::get_host_name(name, namelen); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3822 JVM_END |
| 0 | 3823 |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3824 |
| 0 | 3825 // Library support /////////////////////////////////////////////////////////////////////////// |
| 3826 | |
| 3827 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
| 3828 //%note jvm_ct | |
| 3829 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
| 3830 char ebuf[1024]; | |
| 3831 void *load_result; | |
| 3832 { | |
| 3833 ThreadToNativeFromVM ttnfvm(thread); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3834 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
| 0 | 3835 } |
| 3836 if (load_result == NULL) { | |
| 3837 char msg[1024]; | |
| 3838 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
| 3839 // Since 'ebuf' may contain a string encoded using | |
| 3840 // platform encoding scheme, we need to pass | |
| 3841 // Exceptions::unsafe_to_utf8 to the new_exception method | |
| 3842 // as the last argument. See bug 6367357. | |
| 3843 Handle h_exception = | |
| 3844 Exceptions::new_exception(thread, | |
| 3845 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
| 3846 msg, Exceptions::unsafe_to_utf8); | |
| 3847 | |
| 3848 THROW_HANDLE_0(h_exception); | |
| 3849 } | |
| 3850 return load_result; | |
| 3851 JVM_END | |
| 3852 | |
| 3853 | |
| 3854 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
| 3855 JVMWrapper("JVM_UnloadLibrary"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3856 os::dll_unload(handle); |
| 0 | 3857 JVM_END |
| 3858 | |
| 3859 | |
| 3860 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
| 3861 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3862 return os::dll_lookup(handle, name); |
| 0 | 3863 JVM_END |
| 3864 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3865 |
| 0 | 3866 // Floating point support //////////////////////////////////////////////////////////////////// |
| 3867 | |
| 3868 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
| 3869 JVMWrapper("JVM_IsNaN"); | |
| 3870 return g_isnan(a); | |
| 3871 JVM_END | |
| 3872 | |
| 3873 | |
| 3874 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
| 3875 | |
| 3876 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
| 3877 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
| 3878 return Threads::is_supported_jni_version_including_1_1(version); | |
| 3879 JVM_END | |
| 3880 | |
| 3881 | |
| 3882 // String support /////////////////////////////////////////////////////////////////////////// | |
| 3883 | |
| 3884 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
| 3885 JVMWrapper("JVM_InternString"); | |
| 3886 JvmtiVMObjectAllocEventCollector oam; | |
| 3887 if (str == NULL) return NULL; | |
| 3888 oop string = JNIHandles::resolve_non_null(str); | |
| 3889 oop result = StringTable::intern(string, CHECK_NULL); | |
| 3890 return (jstring) JNIHandles::make_local(env, result); | |
| 3891 JVM_END | |
| 3892 | |
| 3893 | |
| 3894 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
| 3895 | |
| 3896 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
| 3897 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
| 3898 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
| 3899 // that only works with java threads. | |
| 3900 | |
| 3901 | |
| 3902 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
| 3903 VM_Exit::block_if_vm_exited(); | |
| 3904 JVMWrapper("JVM_RawMonitorCreate"); | |
| 3905 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
| 3906 } | |
| 3907 | |
| 3908 | |
| 3909 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
| 3910 VM_Exit::block_if_vm_exited(); | |
| 3911 JVMWrapper("JVM_RawMonitorDestroy"); | |
| 3912 delete ((Mutex*) mon); | |
| 3913 } | |
| 3914 | |
| 3915 | |
| 3916 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
| 3917 VM_Exit::block_if_vm_exited(); | |
| 3918 JVMWrapper("JVM_RawMonitorEnter"); | |
| 3919 ((Mutex*) mon)->jvm_raw_lock(); | |
| 3920 return 0; | |
| 3921 } | |
| 3922 | |
| 3923 | |
| 3924 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
| 3925 VM_Exit::block_if_vm_exited(); | |
| 3926 JVMWrapper("JVM_RawMonitorExit"); | |
| 3927 ((Mutex*) mon)->jvm_raw_unlock(); | |
| 3928 } | |
| 3929 | |
| 3930 | |
| 3931 // Support for Serialization | |
| 3932 | |
| 3933 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
| 3934 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
| 3935 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
| 3936 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
| 3937 | |
| 3938 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
| 3939 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
| 3940 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
| 3941 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
| 3942 | |
| 3943 | |
| 3944 void initialize_converter_functions() { | |
| 3945 if (JDK_Version::is_gte_jdk14x_version()) { | |
| 3946 // These functions only exist for compatibility with 1.3.1 and earlier | |
| 3947 return; | |
| 3948 } | |
| 3949 | |
| 3950 // called from universe_post_init() | |
| 3951 assert( | |
| 3952 int_bits_to_float_fn == NULL && | |
| 3953 long_bits_to_double_fn == NULL && | |
| 3954 float_to_int_bits_fn == NULL && | |
| 3955 double_to_long_bits_fn == NULL , | |
| 3956 "initialization done twice" | |
| 3957 ); | |
| 3958 // initialize | |
| 3959 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
| 3960 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
| 3961 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
| 3962 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
| 3963 // verify | |
| 3964 assert( | |
| 3965 int_bits_to_float_fn != NULL && | |
| 3966 long_bits_to_double_fn != NULL && | |
| 3967 float_to_int_bits_fn != NULL && | |
| 3968 double_to_long_bits_fn != NULL , | |
| 3969 "initialization failed" | |
| 3970 ); | |
| 3971 } | |
| 3972 | |
| 3973 | |
| 3974 | |
| 3975 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
| 3976 | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
3977 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS) { |
| 0 | 3978 // Security Note: |
| 3979 // The Java level wrapper will perform the necessary security check allowing | |
| 3980 // 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
|
3981 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
|
3982 |
| 0 | 3983 KlassHandle klass_handle(THREAD, klass); |
| 3984 // Check if we should initialize the class | |
| 3985 if (init && klass_handle->oop_is_instance()) { | |
| 3986 klass_handle->initialize(CHECK_NULL); | |
| 3987 } | |
| 3988 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
| 3989 } | |
| 3990 | |
| 3991 | |
| 14909 | 3992 // Internal SQE debugging support /////////////////////////////////////////////////////////// |
| 3993 | |
| 3994 #ifndef PRODUCT | |
| 3995 | |
| 3996 extern "C" { | |
| 3997 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
| 3998 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
| 3999 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
| 4000 } | |
| 4001 | |
| 4002 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
| 4003 JVMWrapper("JVM_AccessBoolVMFlag"); | |
| 4004 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, Flag::INTERNAL); | |
| 4005 JVM_END | |
| 4006 | |
| 4007 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
| 4008 JVMWrapper("JVM_AccessVMIntFlag"); | |
| 4009 intx v; | |
| 4010 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, Flag::INTERNAL); | |
| 4011 *value = (jint)v; | |
| 4012 return result; | |
| 4013 JVM_END | |
| 4014 | |
| 4015 | |
| 4016 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
| 4017 JVMWrapper("JVM_VMBreakPoint"); | |
| 4018 oop the_obj = JNIHandles::resolve(obj); | |
| 4019 BREAKPOINT; | |
| 4020 JVM_END | |
| 4021 | |
| 4022 | |
| 4023 #endif | |
| 4024 | |
| 4025 | |
| 0 | 4026 // Method /////////////////////////////////////////////////////////////////////////////////////////// |
| 4027 | |
| 4028 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
| 4029 JVMWrapper("JVM_InvokeMethod"); | |
| 4030 Handle method_handle; | |
| 4031 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
| 4032 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
| 4033 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
| 4034 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4035 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
| 4036 jobject res = JNIHandles::make_local(env, result); | |
| 4037 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4038 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
| 4039 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
| 4040 if (java_lang_Class::is_primitive(ret_type)) { | |
| 4041 // Only for primitive type vm allocates memory for java object. | |
| 4042 // See box() method. | |
| 4043 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4044 } | |
| 4045 } | |
| 4046 return res; | |
| 4047 } else { | |
| 4048 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
| 4049 } | |
| 4050 JVM_END | |
| 4051 | |
| 4052 | |
| 4053 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
| 4054 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
| 4055 oop constructor_mirror = JNIHandles::resolve(c); | |
| 4056 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4057 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
| 4058 jobject res = JNIHandles::make_local(env, result); | |
| 4059 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4060 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4061 } | |
| 4062 return res; | |
| 4063 JVM_END | |
| 4064 | |
| 4065 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4066 | |
| 4067 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
| 4068 JVMWrapper("JVM_SupportsCX8"); | |
| 4069 return VM_Version::supports_cx8(); | |
| 4070 JVM_END | |
| 4071 | |
| 4072 | |
| 4073 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
| 4074 JVMWrapper("JVM_CX8Field"); | |
| 4075 jlong res; | |
| 4076 oop o = JNIHandles::resolve(obj); | |
| 4077 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 4078 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
| 4079 | |
| 4080 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
| 4081 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
| 4082 | |
| 4083 return res == oldVal; | |
| 4084 JVM_END | |
| 4085 | |
|
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4086 // DTrace /////////////////////////////////////////////////////////////////// |
|
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4087 |
|
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4088 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
|
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4089 JVMWrapper("JVM_DTraceGetVersion"); |
|
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4090 return (jint)JVM_TRACING_DTRACE_VERSION; |
|
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4091 JVM_END |
|
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4092 |
|
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4093 JVM_ENTRY(jlong,JVM_DTraceActivate( |
|
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4094 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
|
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4095 JVM_DTraceProvider* providers)) |
|
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4096 JVMWrapper("JVM_DTraceActivate"); |
|
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|
4097 return DTraceJSDT::activate( |
|
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|
4098 version, module_name, providers_count, providers, CHECK_0); |
|
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4099 JVM_END |
|
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4100 |
|
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|
4101 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
|
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4102 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
|
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4103 return DTraceJSDT::is_probe_enabled(method); |
|
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4104 JVM_END |
|
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4105 |
|
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|
4106 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
|
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4107 JVMWrapper("JVM_DTraceDispose"); |
|
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4108 DTraceJSDT::dispose(handle); |
|
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4109 JVM_END |
|
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4110 |
|
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4111 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
|
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4112 JVMWrapper("JVM_DTraceIsSupported"); |
|
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4113 return DTraceJSDT::is_supported(); |
|
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4114 JVM_END |
|
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4115 |
| 0 | 4116 // Returns an array of all live Thread objects (VM internal JavaThreads, |
| 4117 // jvmti agent threads, and JNI attaching threads are skipped) | |
| 4118 // See CR 6404306 regarding JNI attaching threads | |
| 4119 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
| 4120 ResourceMark rm(THREAD); | |
| 4121 ThreadsListEnumerator tle(THREAD, false, false); | |
| 4122 JvmtiVMObjectAllocEventCollector oam; | |
| 4123 | |
| 4124 int num_threads = tle.num_threads(); | |
| 1142 | 4125 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
| 0 | 4126 objArrayHandle threads_ah(THREAD, r); |
| 4127 | |
| 4128 for (int i = 0; i < num_threads; i++) { | |
| 4129 Handle h = tle.get_threadObj(i); | |
| 4130 threads_ah->obj_at_put(i, h()); | |
| 4131 } | |
| 4132 | |
| 4133 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
| 4134 JVM_END | |
| 4135 | |
| 4136 | |
| 4137 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
| 4138 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
| 4139 // the corresponding entry in the given threads array | |
| 4140 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
| 4141 JVMWrapper("JVM_DumpThreads"); | |
| 4142 JvmtiVMObjectAllocEventCollector oam; | |
| 4143 | |
| 4144 // Check if threads is null | |
| 4145 if (threads == NULL) { | |
| 4146 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4147 } | |
| 4148 | |
| 4149 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
| 4150 objArrayHandle ah(THREAD, a); | |
| 4151 int num_threads = ah->length(); | |
| 4152 // check if threads is non-empty array | |
| 4153 if (num_threads == 0) { | |
| 4154 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
| 4155 } | |
| 4156 | |
| 4157 // check if threads is not an array of objects of Thread class | |
|
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4158 Klass* k = ObjArrayKlass::cast(ah->klass())->element_klass(); |
| 1142 | 4159 if (k != SystemDictionary::Thread_klass()) { |
| 0 | 4160 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
| 4161 } | |
| 4162 | |
| 4163 ResourceMark rm(THREAD); | |
| 4164 | |
| 4165 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
| 4166 for (int i = 0; i < num_threads; i++) { | |
| 4167 oop thread_obj = ah->obj_at(i); | |
| 4168 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
| 4169 thread_handle_array->append(h); | |
| 4170 } | |
| 4171 | |
| 4172 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
| 4173 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
| 4174 | |
| 4175 JVM_END | |
| 4176 | |
| 4177 // JVM monitoring and management support | |
| 4178 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
| 4179 return Management::get_jmm_interface(version); | |
| 4180 JVM_END | |
| 4181 | |
| 4182 // com.sun.tools.attach.VirtualMachine agent properties support | |
| 4183 // | |
| 4184 // Initialize the agent properties with the properties maintained in the VM | |
| 4185 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
| 4186 JVMWrapper("JVM_InitAgentProperties"); | |
| 4187 ResourceMark rm; | |
| 4188 | |
| 4189 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
| 4190 | |
| 4191 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
| 4192 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
| 4193 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
| 4194 return properties; | |
| 4195 JVM_END | |
| 4196 | |
| 4197 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
| 4198 { | |
| 4199 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
| 4200 JvmtiVMObjectAllocEventCollector oam; | |
| 4201 | |
| 4202 if (ofClass == NULL) { | |
| 4203 return NULL; | |
| 4204 } | |
| 4205 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
| 4206 // Special handling for primitive objects | |
| 4207 if (java_lang_Class::is_primitive(mirror())) { | |
| 4208 return NULL; | |
| 4209 } | |
|
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4210 Klass* k = java_lang_Class::as_Klass(mirror()); |
| 6983 | 4211 if (!k->oop_is_instance()) { |
| 0 | 4212 return NULL; |
| 4213 } | |
| 4214 instanceKlassHandle ik_h(THREAD, k); | |
| 4215 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
| 4216 if (encl_method_class_idx == 0) { | |
| 4217 return NULL; | |
| 4218 } | |
| 1142 | 4219 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
| 0 | 4220 objArrayHandle dest(THREAD, dest_o); |
|
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4221 Klass* enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); |
| 6983 | 4222 dest->obj_at_put(0, enc_k->java_mirror()); |
| 0 | 4223 int encl_method_method_idx = ik_h->enclosing_method_method_index(); |
| 4224 if (encl_method_method_idx != 0) { | |
|
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|
4225 Symbol* sym = ik_h->constants()->symbol_at( |
| 0 | 4226 extract_low_short_from_int( |
| 4227 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4228 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4229 dest->obj_at_put(1, str()); | |
|
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4230 sym = ik_h->constants()->symbol_at( |
| 0 | 4231 extract_high_short_from_int( |
| 4232 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4233 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4234 dest->obj_at_put(2, str()); | |
| 4235 } | |
| 4236 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 4237 } | |
| 4238 JVM_END | |
| 4239 | |
| 4240 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
| 4241 jint javaThreadState)) | |
| 4242 { | |
| 4243 // If new thread states are added in future JDK and VM versions, | |
| 4244 // this should check if the JDK version is compatible with thread | |
| 4245 // states supported by the VM. Return NULL if not compatible. | |
| 4246 // | |
| 4247 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4248 // to the Java thread state that the JDK supports. | |
| 4249 // | |
| 4250 | |
| 4251 typeArrayHandle values_h; | |
| 4252 switch (javaThreadState) { | |
| 4253 case JAVA_THREAD_STATE_NEW : { | |
| 4254 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4255 values_h = typeArrayHandle(THREAD, r); | |
| 4256 values_h->int_at_put(0, java_lang_Thread::NEW); | |
| 4257 break; | |
| 4258 } | |
| 4259 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4260 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4261 values_h = typeArrayHandle(THREAD, r); | |
| 4262 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
| 4263 break; | |
| 4264 } | |
| 4265 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4266 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4267 values_h = typeArrayHandle(THREAD, r); | |
| 4268 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
| 4269 break; | |
| 4270 } | |
| 4271 case JAVA_THREAD_STATE_WAITING : { | |
| 4272 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
| 4273 values_h = typeArrayHandle(THREAD, r); | |
| 4274 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
| 4275 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
| 4276 break; | |
| 4277 } | |
| 4278 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4279 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
| 4280 values_h = typeArrayHandle(THREAD, r); | |
| 4281 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
| 4282 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
| 4283 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
| 4284 break; | |
| 4285 } | |
| 4286 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4287 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4288 values_h = typeArrayHandle(THREAD, r); | |
| 4289 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
| 4290 break; | |
| 4291 } | |
| 4292 default: | |
| 4293 // Unknown state - probably incompatible JDK version | |
| 4294 return NULL; | |
| 4295 } | |
| 4296 | |
| 4297 return (jintArray) JNIHandles::make_local(env, values_h()); | |
| 4298 } | |
| 4299 JVM_END | |
| 4300 | |
| 4301 | |
| 4302 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
| 4303 jint javaThreadState, | |
| 4304 jintArray values)) | |
| 4305 { | |
| 4306 // If new thread states are added in future JDK and VM versions, | |
| 4307 // this should check if the JDK version is compatible with thread | |
| 4308 // states supported by the VM. Return NULL if not compatible. | |
| 4309 // | |
| 4310 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4311 // to the Java thread state that the JDK supports. | |
| 4312 // | |
| 4313 | |
| 4314 ResourceMark rm; | |
| 4315 | |
| 4316 // Check if threads is null | |
| 4317 if (values == NULL) { | |
| 4318 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4319 } | |
| 4320 | |
| 4321 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
| 4322 typeArrayHandle values_h(THREAD, v); | |
| 4323 | |
| 4324 objArrayHandle names_h; | |
| 4325 switch (javaThreadState) { | |
| 4326 case JAVA_THREAD_STATE_NEW : { | |
| 4327 assert(values_h->length() == 1 && | |
| 4328 values_h->int_at(0) == java_lang_Thread::NEW, | |
| 4329 "Invalid threadStatus value"); | |
| 4330 | |
| 1142 | 4331 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4332 1, /* only 1 substate */ |
| 4333 CHECK_NULL); | |
| 4334 names_h = objArrayHandle(THREAD, r); | |
| 4335 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
| 4336 names_h->obj_at_put(0, name()); | |
| 4337 break; | |
| 4338 } | |
| 4339 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4340 assert(values_h->length() == 1 && | |
| 4341 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
| 4342 "Invalid threadStatus value"); | |
| 4343 | |
| 1142 | 4344 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4345 1, /* only 1 substate */ |
| 4346 CHECK_NULL); | |
| 4347 names_h = objArrayHandle(THREAD, r); | |
| 4348 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
| 4349 names_h->obj_at_put(0, name()); | |
| 4350 break; | |
| 4351 } | |
| 4352 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4353 assert(values_h->length() == 1 && | |
| 4354 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
| 4355 "Invalid threadStatus value"); | |
| 4356 | |
| 1142 | 4357 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4358 1, /* only 1 substate */ |
| 4359 CHECK_NULL); | |
| 4360 names_h = objArrayHandle(THREAD, r); | |
| 4361 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
| 4362 names_h->obj_at_put(0, name()); | |
| 4363 break; | |
| 4364 } | |
| 4365 case JAVA_THREAD_STATE_WAITING : { | |
| 4366 assert(values_h->length() == 2 && | |
| 4367 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
| 4368 values_h->int_at(1) == java_lang_Thread::PARKED, | |
| 4369 "Invalid threadStatus value"); | |
| 1142 | 4370 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4371 2, /* number of substates */ |
| 4372 CHECK_NULL); | |
| 4373 names_h = objArrayHandle(THREAD, r); | |
| 4374 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
| 4375 CHECK_NULL); | |
| 4376 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
| 4377 CHECK_NULL); | |
| 4378 names_h->obj_at_put(0, name0()); | |
| 4379 names_h->obj_at_put(1, name1()); | |
| 4380 break; | |
| 4381 } | |
| 4382 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4383 assert(values_h->length() == 3 && | |
| 4384 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
| 4385 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
| 4386 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
| 4387 "Invalid threadStatus value"); | |
| 1142 | 4388 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4389 3, /* number of substates */ |
| 4390 CHECK_NULL); | |
| 4391 names_h = objArrayHandle(THREAD, r); | |
| 4392 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
| 4393 CHECK_NULL); | |
| 4394 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
| 4395 CHECK_NULL); | |
| 4396 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
| 4397 CHECK_NULL); | |
| 4398 names_h->obj_at_put(0, name0()); | |
| 4399 names_h->obj_at_put(1, name1()); | |
| 4400 names_h->obj_at_put(2, name2()); | |
| 4401 break; | |
| 4402 } | |
| 4403 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4404 assert(values_h->length() == 1 && | |
| 4405 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
| 4406 "Invalid threadStatus value"); | |
| 1142 | 4407 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4408 1, /* only 1 substate */ |
| 4409 CHECK_NULL); | |
| 4410 names_h = objArrayHandle(THREAD, r); | |
| 4411 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
| 4412 names_h->obj_at_put(0, name()); | |
| 4413 break; | |
| 4414 } | |
| 4415 default: | |
| 4416 // Unknown state - probably incompatible JDK version | |
| 4417 return NULL; | |
| 4418 } | |
| 4419 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
| 4420 } | |
| 4421 JVM_END | |
| 4422 | |
| 4423 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
| 4424 { | |
| 4425 memset(info, 0, sizeof(info_size)); | |
| 4426 | |
| 4427 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
| 4428 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4429 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4430 | |
| 4431 // when we add a new capability in the jvm_version_info struct, we should also | |
| 4432 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
| 4433 // counter defined in runtimeService.cpp. | |
| 4434 info->is_attachable = AttachListener::is_attach_supported(); | |
| 4435 } | |
| 4436 JVM_END |