Mercurial > hg > truffle
annotate src/share/vm/prims/jvm.cpp @ 18065:e8d870411858
Merge
| author | asaha |
|---|---|
| date | Thu, 05 Jun 2014 15:26:51 -0700 |
| parents | 54bc75c144b0 |
| children | 1e657b902392 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "classfile/classLoader.hpp" | |
| 27 #include "classfile/javaAssertions.hpp" | |
| 28 #include "classfile/javaClasses.hpp" | |
| 29 #include "classfile/symbolTable.hpp" | |
| 30 #include "classfile/systemDictionary.hpp" | |
| 31 #include "classfile/vmSymbols.hpp" | |
| 32 #include "gc_interface/collectedHeap.inline.hpp" | |
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33 #include "interpreter/bytecode.hpp" |
| 1972 | 34 #include "memory/oopFactory.hpp" |
| 35 #include "memory/universe.inline.hpp" | |
| 3938 | 36 #include "oops/fieldStreams.hpp" |
| 1972 | 37 #include "oops/instanceKlass.hpp" |
| 38 #include "oops/objArrayKlass.hpp" | |
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39 #include "oops/method.hpp" |
| 1972 | 40 #include "prims/jvm.h" |
| 41 #include "prims/jvm_misc.hpp" | |
| 42 #include "prims/jvmtiExport.hpp" | |
| 43 #include "prims/jvmtiThreadState.hpp" | |
| 44 #include "prims/nativeLookup.hpp" | |
| 45 #include "prims/privilegedStack.hpp" | |
| 46 #include "runtime/arguments.hpp" | |
| 47 #include "runtime/dtraceJSDT.hpp" | |
| 48 #include "runtime/handles.inline.hpp" | |
| 49 #include "runtime/init.hpp" | |
| 50 #include "runtime/interfaceSupport.hpp" | |
| 51 #include "runtime/java.hpp" | |
| 52 #include "runtime/javaCalls.hpp" | |
| 53 #include "runtime/jfieldIDWorkaround.hpp" | |
| 54 #include "runtime/os.hpp" | |
| 55 #include "runtime/perfData.hpp" | |
| 56 #include "runtime/reflection.hpp" | |
| 57 #include "runtime/vframe.hpp" | |
| 58 #include "runtime/vm_operations.hpp" | |
| 59 #include "services/attachListener.hpp" | |
| 60 #include "services/management.hpp" | |
| 61 #include "services/threadService.hpp" | |
| 10405 | 62 #include "trace/tracing.hpp" |
| 1972 | 63 #include "utilities/copy.hpp" |
| 64 #include "utilities/defaultStream.hpp" | |
| 65 #include "utilities/dtrace.hpp" | |
| 66 #include "utilities/events.hpp" | |
| 67 #include "utilities/histogram.hpp" | |
| 68 #include "utilities/top.hpp" | |
| 69 #include "utilities/utf8.hpp" | |
| 70 #ifdef TARGET_OS_FAMILY_linux | |
| 71 # include "jvm_linux.h" | |
| 72 #endif | |
| 73 #ifdef TARGET_OS_FAMILY_solaris | |
| 74 # include "jvm_solaris.h" | |
| 75 #endif | |
| 76 #ifdef TARGET_OS_FAMILY_windows | |
| 77 # include "jvm_windows.h" | |
| 78 #endif | |
| 14411 | 79 #ifdef TARGET_OS_FAMILY_aix |
| 80 # include "jvm_aix.h" | |
| 81 #endif | |
| 3960 | 82 #ifdef TARGET_OS_FAMILY_bsd |
| 83 # include "jvm_bsd.h" | |
| 84 #endif | |
| 1972 | 85 |
| 0 | 86 #include <errno.h> |
| 87 | |
| 4006 | 88 #ifndef USDT2 |
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89 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__begin, long long); |
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90 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__end, int); |
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91 HS_DTRACE_PROBE_DECL0(hotspot, thread__yield); |
| 4006 | 92 #endif /* !USDT2 */ |
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93 |
| 0 | 94 /* |
| 95 NOTE about use of any ctor or function call that can trigger a safepoint/GC: | |
| 96 such ctors and calls MUST NOT come between an oop declaration/init and its | |
| 97 usage because if objects are move this may cause various memory stomps, bus | |
| 98 errors and segfaults. Here is a cookbook for causing so called "naked oop | |
| 99 failures": | |
| 100 | |
| 101 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> { | |
| 102 JVMWrapper("JVM_GetClassDeclaredFields"); | |
| 103 | |
| 104 // Object address to be held directly in mirror & not visible to GC | |
| 105 oop mirror = JNIHandles::resolve_non_null(ofClass); | |
| 106 | |
| 107 // If this ctor can hit a safepoint, moving objects around, then | |
| 108 ComplexConstructor foo; | |
| 109 | |
| 110 // Boom! mirror may point to JUNK instead of the intended object | |
| 111 (some dereference of mirror) | |
| 112 | |
| 113 // Here's another call that may block for GC, making mirror stale | |
| 114 MutexLocker ml(some_lock); | |
| 115 | |
| 116 // And here's an initializer that can result in a stale oop | |
| 117 // all in one step. | |
| 118 oop o = call_that_can_throw_exception(TRAPS); | |
| 119 | |
| 120 | |
| 121 The solution is to keep the oop declaration BELOW the ctor or function | |
| 122 call that might cause a GC, do another resolve to reassign the oop, or | |
| 123 consider use of a Handle instead of an oop so there is immunity from object | |
| 124 motion. But note that the "QUICK" entries below do not have a handlemark | |
| 125 and thus can only support use of handles passed in. | |
| 126 */ | |
| 127 | |
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128 static void trace_class_resolution_impl(Klass* to_class, TRAPS) { |
| 0 | 129 ResourceMark rm; |
| 130 int line_number = -1; | |
| 131 const char * source_file = NULL; | |
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132 const char * trace = "explicit"; |
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133 InstanceKlass* caller = NULL; |
| 0 | 134 JavaThread* jthread = JavaThread::current(); |
| 135 if (jthread->has_last_Java_frame()) { | |
| 136 vframeStream vfst(jthread); | |
| 137 | |
| 138 // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames | |
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139 TempNewSymbol access_controller = SymbolTable::new_symbol("java/security/AccessController", CHECK); |
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140 Klass* access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); |
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141 TempNewSymbol privileged_action = SymbolTable::new_symbol("java/security/PrivilegedAction", CHECK); |
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142 Klass* privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); |
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143 |
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144 Method* last_caller = NULL; |
| 0 | 145 |
| 146 while (!vfst.at_end()) { | |
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147 Method* m = vfst.method(); |
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148 if (!vfst.method()->method_holder()->is_subclass_of(SystemDictionary::ClassLoader_klass())&& |
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149 !vfst.method()->method_holder()->is_subclass_of(access_controller_klass) && |
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150 !vfst.method()->method_holder()->is_subclass_of(privileged_action_klass)) { |
| 0 | 151 break; |
| 152 } | |
| 153 last_caller = m; | |
| 154 vfst.next(); | |
| 155 } | |
| 156 // if this is called from Class.forName0 and that is called from Class.forName, | |
| 157 // then print the caller of Class.forName. If this is Class.loadClass, then print | |
| 158 // that caller, otherwise keep quiet since this should be picked up elsewhere. | |
| 159 bool found_it = false; | |
| 160 if (!vfst.at_end() && | |
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161 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
| 0 | 162 vfst.method()->name() == vmSymbols::forName0_name()) { |
| 163 vfst.next(); | |
| 164 if (!vfst.at_end() && | |
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165 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
| 0 | 166 vfst.method()->name() == vmSymbols::forName_name()) { |
| 167 vfst.next(); | |
| 168 found_it = true; | |
| 169 } | |
| 170 } else if (last_caller != NULL && | |
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171 last_caller->method_holder()->name() == |
| 0 | 172 vmSymbols::java_lang_ClassLoader() && |
| 173 (last_caller->name() == vmSymbols::loadClassInternal_name() || | |
| 174 last_caller->name() == vmSymbols::loadClass_name())) { | |
| 175 found_it = true; | |
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176 } else if (!vfst.at_end()) { |
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177 if (vfst.method()->is_native()) { |
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178 // JNI call |
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179 found_it = true; |
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180 } |
| 0 | 181 } |
| 182 if (found_it && !vfst.at_end()) { | |
| 183 // found the caller | |
| 184 caller = vfst.method()->method_holder(); | |
| 185 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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186 if (line_number == -1) { |
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187 // show method name if it's a native method |
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188 trace = vfst.method()->name_and_sig_as_C_string(); |
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189 } |
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190 Symbol* s = caller->source_file_name(); |
| 0 | 191 if (s != NULL) { |
| 192 source_file = s->as_C_string(); | |
| 193 } | |
| 194 } | |
| 195 } | |
| 196 if (caller != NULL) { | |
| 197 if (to_class != caller) { | |
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198 const char * from = caller->external_name(); |
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199 const char * to = to_class->external_name(); |
| 0 | 200 // print in a single call to reduce interleaving between threads |
| 201 if (source_file != NULL) { | |
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202 tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace); |
| 0 | 203 } else { |
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204 tty->print("RESOLVE %s %s (%s)\n", from, to, trace); |
| 0 | 205 } |
| 206 } | |
| 207 } | |
| 208 } | |
| 209 | |
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210 void trace_class_resolution(Klass* to_class) { |
| 0 | 211 EXCEPTION_MARK; |
| 212 trace_class_resolution_impl(to_class, THREAD); | |
| 213 if (HAS_PENDING_EXCEPTION) { | |
| 214 CLEAR_PENDING_EXCEPTION; | |
| 215 } | |
| 216 } | |
| 217 | |
| 218 // Wrapper to trace JVM functions | |
| 219 | |
| 220 #ifdef ASSERT | |
| 221 class JVMTraceWrapper : public StackObj { | |
| 222 public: | |
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223 JVMTraceWrapper(const char* format, ...) ATTRIBUTE_PRINTF(2, 3) { |
| 0 | 224 if (TraceJVMCalls) { |
| 225 va_list ap; | |
| 226 va_start(ap, format); | |
| 227 tty->print("JVM "); | |
| 228 tty->vprint_cr(format, ap); | |
| 229 va_end(ap); | |
| 230 } | |
| 231 } | |
| 232 }; | |
| 233 | |
| 234 Histogram* JVMHistogram; | |
| 235 volatile jint JVMHistogram_lock = 0; | |
| 236 | |
| 237 class JVMHistogramElement : public HistogramElement { | |
| 238 public: | |
| 239 JVMHistogramElement(const char* name); | |
| 240 }; | |
| 241 | |
| 242 JVMHistogramElement::JVMHistogramElement(const char* elementName) { | |
| 243 _name = elementName; | |
| 244 uintx count = 0; | |
| 245 | |
| 246 while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) { | |
| 247 while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) { | |
| 248 count +=1; | |
| 249 if ( (WarnOnStalledSpinLock > 0) | |
| 250 && (count % WarnOnStalledSpinLock == 0)) { | |
| 251 warning("JVMHistogram_lock seems to be stalled"); | |
| 252 } | |
| 253 } | |
| 254 } | |
| 255 | |
| 256 if(JVMHistogram == NULL) | |
| 257 JVMHistogram = new Histogram("JVM Call Counts",100); | |
| 258 | |
| 259 JVMHistogram->add_element(this); | |
| 260 Atomic::dec(&JVMHistogram_lock); | |
| 261 } | |
| 262 | |
| 263 #define JVMCountWrapper(arg) \ | |
| 264 static JVMHistogramElement* e = new JVMHistogramElement(arg); \ | |
| 265 if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen! | |
| 266 | |
| 267 #define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) | |
| 268 #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) | |
| 269 #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) | |
| 270 #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) | |
| 271 #else | |
| 272 #define JVMWrapper(arg1) | |
| 273 #define JVMWrapper2(arg1, arg2) | |
| 274 #define JVMWrapper3(arg1, arg2, arg3) | |
| 275 #define JVMWrapper4(arg1, arg2, arg3, arg4) | |
| 276 #endif | |
| 277 | |
| 278 | |
| 279 // Interface version ///////////////////////////////////////////////////////////////////// | |
| 280 | |
| 281 | |
| 282 JVM_LEAF(jint, JVM_GetInterfaceVersion()) | |
| 283 return JVM_INTERFACE_VERSION; | |
| 284 JVM_END | |
| 285 | |
| 286 | |
| 287 // java.lang.System ////////////////////////////////////////////////////////////////////// | |
| 288 | |
| 289 | |
| 290 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored)) | |
| 291 JVMWrapper("JVM_CurrentTimeMillis"); | |
| 292 return os::javaTimeMillis(); | |
| 293 JVM_END | |
| 294 | |
| 295 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored)) | |
| 296 JVMWrapper("JVM_NanoTime"); | |
| 297 return os::javaTimeNanos(); | |
| 298 JVM_END | |
| 299 | |
| 300 | |
| 301 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, | |
| 302 jobject dst, jint dst_pos, jint length)) | |
| 303 JVMWrapper("JVM_ArrayCopy"); | |
| 304 // Check if we have null pointers | |
| 305 if (src == NULL || dst == NULL) { | |
| 306 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 307 } | |
| 308 arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); | |
| 309 arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); | |
| 310 assert(s->is_oop(), "JVM_ArrayCopy: src not an oop"); | |
| 311 assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); | |
| 312 // Do copy | |
| 6983 | 313 s->klass()->copy_array(s, src_pos, d, dst_pos, length, thread); |
| 0 | 314 JVM_END |
| 315 | |
| 316 | |
| 317 static void set_property(Handle props, const char* key, const char* value, TRAPS) { | |
| 318 JavaValue r(T_OBJECT); | |
| 319 // public synchronized Object put(Object key, Object value); | |
| 320 HandleMark hm(THREAD); | |
| 321 Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK); | |
| 322 Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK); | |
| 323 JavaCalls::call_virtual(&r, | |
| 324 props, | |
| 1142 | 325 KlassHandle(THREAD, SystemDictionary::Properties_klass()), |
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326 vmSymbols::put_name(), |
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327 vmSymbols::object_object_object_signature(), |
| 0 | 328 key_str, |
| 329 value_str, | |
| 330 THREAD); | |
| 331 } | |
| 332 | |
| 333 | |
| 334 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties)); | |
| 335 | |
| 336 | |
| 337 JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties)) | |
| 338 JVMWrapper("JVM_InitProperties"); | |
| 339 ResourceMark rm; | |
| 340 | |
| 341 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
| 342 | |
| 343 // System property list includes both user set via -D option and | |
| 344 // jvm system specific properties. | |
| 345 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
| 346 PUTPROP(props, p->key(), p->value()); | |
| 347 } | |
| 348 | |
| 349 // Convert the -XX:MaxDirectMemorySize= command line flag | |
| 350 // to the sun.nio.MaxDirectMemorySize property. | |
| 351 // Do this after setting user properties to prevent people | |
| 352 // from setting the value with a -D option, as requested. | |
| 353 { | |
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354 if (FLAG_IS_DEFAULT(MaxDirectMemorySize)) { |
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355 PUTPROP(props, "sun.nio.MaxDirectMemorySize", "-1"); |
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356 } else { |
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357 char as_chars[256]; |
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358 jio_snprintf(as_chars, sizeof(as_chars), UINTX_FORMAT, MaxDirectMemorySize); |
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359 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); |
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360 } |
| 0 | 361 } |
| 362 | |
| 363 // JVM monitoring and management support | |
| 364 // Add the sun.management.compiler property for the compiler's name | |
| 365 { | |
| 366 #undef CSIZE | |
| 367 #if defined(_LP64) || defined(_WIN64) | |
| 368 #define CSIZE "64-Bit " | |
| 369 #else | |
| 370 #define CSIZE | |
| 371 #endif // 64bit | |
| 372 | |
| 373 #ifdef TIERED | |
| 374 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; | |
| 375 #else | |
| 376 #if defined(COMPILER1) | |
| 377 const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; | |
| 378 #elif defined(COMPILER2) | |
| 379 const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; | |
| 380 #else | |
| 381 const char* compiler_name = ""; | |
| 382 #endif // compilers | |
| 383 #endif // TIERED | |
| 384 | |
| 385 if (*compiler_name != '\0' && | |
| 386 (Arguments::mode() != Arguments::_int)) { | |
| 387 PUTPROP(props, "sun.management.compiler", compiler_name); | |
| 388 } | |
| 389 } | |
| 390 | |
| 391 return properties; | |
| 392 JVM_END | |
| 393 | |
| 394 | |
| 395 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// | |
| 396 | |
| 397 extern volatile jint vm_created; | |
| 398 | |
| 399 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
| 400 if (vm_created != 0 && (code == 0)) { | |
| 401 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
| 402 Universe::run_finalizers_on_exit(); | |
| 403 } | |
| 404 before_exit(thread); | |
| 405 vm_exit(code); | |
| 406 JVM_END | |
| 407 | |
| 408 | |
| 409 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
| 410 before_exit(thread); | |
| 411 vm_exit(code); | |
| 412 JVM_END | |
| 413 | |
| 414 | |
| 415 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
| 416 register_on_exit_function(func); | |
| 417 JVM_END | |
| 418 | |
| 419 | |
| 420 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
| 421 JVMWrapper("JVM_GC"); | |
| 422 if (!DisableExplicitGC) { | |
| 423 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
| 424 } | |
| 425 JVM_END | |
| 426 | |
| 427 | |
| 428 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
| 429 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
| 430 return Universe::heap()->millis_since_last_gc(); | |
| 431 JVM_END | |
| 432 | |
| 433 | |
| 434 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
| 435 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
| 436 JVM_END | |
| 437 | |
| 438 | |
| 439 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
| 440 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
| 441 JVM_END | |
| 442 | |
| 443 static inline jlong convert_size_t_to_jlong(size_t val) { | |
| 444 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
| 445 NOT_LP64 (return (jlong)val;) | |
| 446 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
| 447 } | |
| 448 | |
| 449 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
| 450 JVMWrapper("JVM_TotalMemory"); | |
| 451 size_t n = Universe::heap()->capacity(); | |
| 452 return convert_size_t_to_jlong(n); | |
| 453 JVM_END | |
| 454 | |
| 455 | |
| 456 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
| 457 JVMWrapper("JVM_FreeMemory"); | |
| 458 CollectedHeap* ch = Universe::heap(); | |
|
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459 size_t n; |
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460 { |
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461 MutexLocker x(Heap_lock); |
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462 n = ch->capacity() - ch->used(); |
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463 } |
| 0 | 464 return convert_size_t_to_jlong(n); |
| 465 JVM_END | |
| 466 | |
| 467 | |
| 468 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
| 469 JVMWrapper("JVM_MaxMemory"); | |
| 470 size_t n = Universe::heap()->max_capacity(); | |
| 471 return convert_size_t_to_jlong(n); | |
| 472 JVM_END | |
| 473 | |
| 474 | |
| 475 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
| 476 JVMWrapper("JVM_ActiveProcessorCount"); | |
| 477 return os::active_processor_count(); | |
| 478 JVM_END | |
| 479 | |
| 480 | |
| 481 | |
| 482 // java.lang.Throwable ////////////////////////////////////////////////////// | |
| 483 | |
| 484 | |
| 485 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
| 486 JVMWrapper("JVM_FillInStackTrace"); | |
| 487 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
| 488 java_lang_Throwable::fill_in_stack_trace(exception); | |
| 489 JVM_END | |
| 490 | |
| 491 | |
| 492 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
| 493 JVMWrapper("JVM_GetStackTraceDepth"); | |
| 494 oop exception = JNIHandles::resolve(throwable); | |
| 495 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
| 496 JVM_END | |
| 497 | |
| 498 | |
| 499 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
| 500 JVMWrapper("JVM_GetStackTraceElement"); | |
| 501 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
| 502 oop exception = JNIHandles::resolve(throwable); | |
| 503 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
| 504 return JNIHandles::make_local(env, element); | |
| 505 JVM_END | |
| 506 | |
| 507 | |
| 508 // java.lang.Object /////////////////////////////////////////////// | |
| 509 | |
| 510 | |
| 511 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
| 512 JVMWrapper("JVM_IHashCode"); | |
| 513 // as implemented in the classic virtual machine; return 0 if object is NULL | |
| 514 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
| 515 JVM_END | |
| 516 | |
| 517 | |
| 518 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
| 519 JVMWrapper("JVM_MonitorWait"); | |
| 520 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 521 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
| 522 if (JvmtiExport::should_post_monitor_wait()) { | |
| 523 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
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524 |
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525 // The current thread already owns the monitor and it has not yet |
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526 // been added to the wait queue so the current thread cannot be |
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527 // made the successor. This means that the JVMTI_EVENT_MONITOR_WAIT |
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528 // event handler cannot accidentally consume an unpark() meant for |
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529 // the ParkEvent associated with this ObjectMonitor. |
| 0 | 530 } |
| 531 ObjectSynchronizer::wait(obj, ms, CHECK); | |
| 532 JVM_END | |
| 533 | |
| 534 | |
| 535 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
| 536 JVMWrapper("JVM_MonitorNotify"); | |
| 537 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 538 ObjectSynchronizer::notify(obj, CHECK); | |
| 539 JVM_END | |
| 540 | |
| 541 | |
| 542 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
| 543 JVMWrapper("JVM_MonitorNotifyAll"); | |
| 544 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 545 ObjectSynchronizer::notifyall(obj, CHECK); | |
| 546 JVM_END | |
| 547 | |
| 548 | |
| 549 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
| 550 JVMWrapper("JVM_Clone"); | |
| 551 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 552 const KlassHandle klass (THREAD, obj->klass()); | |
| 553 JvmtiVMObjectAllocEventCollector oam; | |
| 554 | |
| 555 #ifdef ASSERT | |
| 556 // Just checking that the cloneable flag is set correct | |
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557 if (obj->is_array()) { |
| 0 | 558 guarantee(klass->is_cloneable(), "all arrays are cloneable"); |
| 559 } else { | |
| 560 guarantee(obj->is_instance(), "should be instanceOop"); | |
| 1142 | 561 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
| 0 | 562 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
| 563 } | |
| 564 #endif | |
| 565 | |
| 566 // Check if class of obj supports the Cloneable interface. | |
| 567 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
| 568 if (!klass->is_cloneable()) { | |
| 569 ResourceMark rm(THREAD); | |
| 570 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
| 571 } | |
| 572 | |
| 573 // Make shallow object copy | |
| 574 const int size = obj->size(); | |
| 575 oop new_obj = NULL; | |
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576 if (obj->is_array()) { |
| 0 | 577 const int length = ((arrayOop)obj())->length(); |
| 578 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
| 579 } else { | |
| 580 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
| 581 } | |
| 582 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
| 583 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
| 584 // be suspended in the middle of copying the pointer and end up with parts | |
| 585 // of two different pointers in the field. Subsequent dereferences will crash. | |
| 586 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
| 587 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
| 588 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
| 589 // The same is true of StubRoutines::object_copy and the various oop_copy | |
| 590 // variants, and of the code generated by the inline_native_clone intrinsic. | |
| 591 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
| 592 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
| 593 (size_t)align_object_size(size) / HeapWordsPerLong); | |
| 594 // Clear the header | |
| 595 new_obj->init_mark(); | |
| 596 | |
| 597 // Store check (mark entire object and let gc sort it out) | |
| 598 BarrierSet* bs = Universe::heap()->barrier_set(); | |
| 599 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
| 600 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
| 601 | |
| 602 // Caution: this involves a java upcall, so the clone should be | |
| 603 // "gc-robust" by this stage. | |
| 604 if (klass->has_finalizer()) { | |
| 605 assert(obj->is_instance(), "should be instanceOop"); | |
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606 new_obj = InstanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); |
| 0 | 607 } |
| 608 | |
| 609 return JNIHandles::make_local(env, oop(new_obj)); | |
| 610 JVM_END | |
| 611 | |
| 612 // java.lang.Compiler //////////////////////////////////////////////////// | |
| 613 | |
| 614 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
| 615 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
| 616 // functions are all silently ignored unless JVM warnings are printed. | |
| 617 | |
| 618 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
| 619 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
| 620 JVM_END | |
| 621 | |
| 622 | |
| 623 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
| 624 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
| 625 return JNI_FALSE; | |
| 626 JVM_END | |
| 627 | |
| 628 | |
| 629 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
| 630 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
| 631 return JNI_FALSE; | |
| 632 JVM_END | |
| 633 | |
| 634 | |
| 635 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
| 636 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
| 637 return JNI_FALSE; | |
| 638 JVM_END | |
| 639 | |
| 640 | |
| 641 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
| 642 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
| 643 return NULL; | |
| 644 JVM_END | |
| 645 | |
| 646 | |
| 647 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
| 648 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
| 649 JVM_END | |
| 650 | |
| 651 | |
| 652 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
| 653 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
| 654 JVM_END | |
| 655 | |
| 656 | |
| 657 | |
| 658 // Error message support ////////////////////////////////////////////////////// | |
| 659 | |
| 660 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
| 661 JVMWrapper("JVM_GetLastErrorString"); | |
|
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662 return (jint)os::lasterror(buf, len); |
| 0 | 663 JVM_END |
| 664 | |
| 665 | |
| 666 // java.io.File /////////////////////////////////////////////////////////////// | |
| 667 | |
| 668 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
| 669 JVMWrapper2("JVM_NativePath (%s)", path); | |
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670 return os::native_path(path); |
| 0 | 671 JVM_END |
| 672 | |
| 673 | |
| 674 // Misc. class handling /////////////////////////////////////////////////////////// | |
| 675 | |
| 676 | |
| 677 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
| 678 JVMWrapper("JVM_GetCallerClass"); | |
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679 |
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680 // Pre-JDK 8 and early builds of JDK 8 don't have a CallerSensitive annotation; or |
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681 // sun.reflect.Reflection.getCallerClass with a depth parameter is provided |
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682 // temporarily for existing code to use until a replacement API is defined. |
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683 if (SystemDictionary::reflect_CallerSensitive_klass() == NULL || depth != JVM_CALLER_DEPTH) { |
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684 Klass* k = thread->security_get_caller_class(depth); |
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685 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, k->java_mirror()); |
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686 } |
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687 |
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688 // Getting the class of the caller frame. |
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689 // |
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690 // The call stack at this point looks something like this: |
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691 // |
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692 // [0] [ @CallerSensitive public sun.reflect.Reflection.getCallerClass ] |
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693 // [1] [ @CallerSensitive API.method ] |
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694 // [.] [ (skipped intermediate frames) ] |
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695 // [n] [ caller ] |
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696 vframeStream vfst(thread); |
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697 // Cf. LibraryCallKit::inline_native_Reflection_getCallerClass |
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698 for (int n = 0; !vfst.at_end(); vfst.security_next(), n++) { |
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699 Method* m = vfst.method(); |
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700 assert(m != NULL, "sanity"); |
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701 switch (n) { |
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702 case 0: |
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703 // This must only be called from Reflection.getCallerClass |
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704 if (m->intrinsic_id() != vmIntrinsics::_getCallerClass) { |
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705 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetCallerClass must only be called from Reflection.getCallerClass"); |
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706 } |
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|
707 // fall-through |
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708 case 1: |
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709 // Frame 0 and 1 must be caller sensitive. |
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710 if (!m->caller_sensitive()) { |
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711 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), err_msg("CallerSensitive annotation expected at frame %d", n)); |
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712 } |
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713 break; |
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|
714 default: |
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715 if (!m->is_ignored_by_security_stack_walk()) { |
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716 // We have reached the desired frame; return the holder class. |
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717 return (jclass) JNIHandles::make_local(env, m->method_holder()->java_mirror()); |
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718 } |
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719 break; |
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720 } |
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721 } |
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722 return NULL; |
| 0 | 723 JVM_END |
| 724 | |
| 725 | |
| 726 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
| 727 JVMWrapper("JVM_FindPrimitiveClass"); | |
| 728 oop mirror = NULL; | |
| 729 BasicType t = name2type(utf); | |
| 730 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
| 731 mirror = Universe::java_mirror(t); | |
| 732 } | |
| 733 if (mirror == NULL) { | |
| 734 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
| 735 } else { | |
| 736 return (jclass) JNIHandles::make_local(env, mirror); | |
| 737 } | |
| 738 JVM_END | |
| 739 | |
| 740 | |
| 741 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
| 742 JVMWrapper("JVM_ResolveClass"); | |
| 743 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
| 744 JVM_END | |
| 745 | |
|
878
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746 |
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747 // Returns a class loaded by the bootstrap class loader; or null |
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748 // if not found. ClassNotFoundException is not thrown. |
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749 // |
|
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750 // Rationale behind JVM_FindClassFromBootLoader |
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751 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
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752 // b> because of (a) java.dll has a direct dependecy on the unexported |
|
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753 // private symbol "_JVM_FindClassFromClassLoader@20". |
|
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754 // c> the launcher cannot use the private symbol as it dynamically opens |
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755 // the entry point, so if something changes, the launcher will fail |
|
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756 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
|
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757 // stable exported interface. |
|
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758 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
|
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759 // signature to change from _JVM_FindClassFromClassLoader@20 to |
|
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760 // JVM_FindClassFromClassLoader and will not be backward compatible |
|
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761 // with older JDKs. |
|
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762 // Thus a public/stable exported entry point is the right solution, |
|
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763 // public here means public in linker semantics, and is exported only |
|
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764 // to the JDK, and is not intended to be a public API. |
|
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|
765 |
|
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|
766 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
|
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|
767 const char* name)) |
|
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|
768 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
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|
769 |
|
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770 // Java libraries should ensure that name is never null... |
|
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771 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
|
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|
772 // It's impossible to create this class; the name cannot fit |
|
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|
773 // into the constant pool. |
|
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|
774 return NULL; |
|
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|
775 } |
|
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|
776 |
|
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777 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
|
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778 Klass* k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
|
878
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779 if (k == NULL) { |
|
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|
780 return NULL; |
|
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|
781 } |
|
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|
782 |
|
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|
783 if (TraceClassResolution) { |
|
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|
784 trace_class_resolution(k); |
|
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785 } |
| 6983 | 786 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
|
878
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|
787 JVM_END |
|
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|
788 |
| 18051 | 789 // Not used; JVM_FindClassFromCaller replaces this. |
|
878
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|
790 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
|
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|
791 jboolean init, jobject loader, |
|
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|
792 jboolean throwError)) |
|
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|
793 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
|
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|
794 throwError ? "error" : "exception"); |
| 388 | 795 // Java libraries should ensure that name is never null... |
|
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|
796 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
| 388 | 797 // It's impossible to create this class; the name cannot fit |
| 798 // into the constant pool. | |
| 799 if (throwError) { | |
| 800 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 801 } else { | |
| 802 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
| 803 } | |
| 804 } | |
|
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|
805 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
| 388 | 806 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
| 807 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 808 Handle(), throwError, THREAD); | |
| 809 | |
| 810 if (TraceClassResolution && result != NULL) { | |
|
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811 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
| 388 | 812 } |
| 813 return result; | |
| 0 | 814 JVM_END |
| 815 | |
| 18051 | 816 // Find a class with this name in this loader, using the caller's protection domain. |
| 817 JVM_ENTRY(jclass, JVM_FindClassFromCaller(JNIEnv* env, const char* name, | |
| 818 jboolean init, jobject loader, | |
| 819 jclass caller)) | |
| 820 JVMWrapper2("JVM_FindClassFromCaller %s throws ClassNotFoundException", name); | |
| 821 // Java libraries should ensure that name is never null... | |
| 822 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { | |
| 823 // It's impossible to create this class; the name cannot fit | |
| 824 // into the constant pool. | |
| 825 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
| 826 } | |
| 827 | |
| 828 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); | |
| 829 | |
| 830 oop loader_oop = JNIHandles::resolve(loader); | |
| 831 oop from_class = JNIHandles::resolve(caller); | |
| 832 oop protection_domain = NULL; | |
| 833 // If loader is null, shouldn't call ClassLoader.checkPackageAccess; otherwise get | |
| 834 // NPE. Put it in another way, the bootstrap class loader has all permission and | |
| 835 // thus no checkPackageAccess equivalence in the VM class loader. | |
| 836 // The caller is also passed as NULL by the java code if there is no security | |
| 837 // manager to avoid the performance cost of getting the calling class. | |
| 838 if (from_class != NULL && loader_oop != NULL) { | |
| 839 protection_domain = java_lang_Class::as_Klass(from_class)->protection_domain(); | |
| 840 } | |
| 841 | |
| 842 Handle h_loader(THREAD, loader_oop); | |
| 843 Handle h_prot(THREAD, protection_domain); | |
| 844 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 845 h_prot, false, THREAD); | |
| 846 | |
| 847 if (TraceClassResolution && result != NULL) { | |
| 848 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); | |
| 849 } | |
| 850 return result; | |
| 851 JVM_END | |
| 0 | 852 |
| 853 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
| 854 jboolean init, jclass from)) | |
| 855 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
|
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856 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
| 0 | 857 // It's impossible to create this class; the name cannot fit |
| 858 // into the constant pool. | |
| 859 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 860 } | |
|
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|
861 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
| 0 | 862 oop from_class_oop = JNIHandles::resolve(from); |
|
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863 Klass* from_class = (from_class_oop == NULL) |
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864 ? (Klass*)NULL |
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865 : java_lang_Class::as_Klass(from_class_oop); |
| 0 | 866 oop class_loader = NULL; |
| 867 oop protection_domain = NULL; | |
| 868 if (from_class != NULL) { | |
| 6983 | 869 class_loader = from_class->class_loader(); |
| 870 protection_domain = from_class->protection_domain(); | |
| 0 | 871 } |
| 872 Handle h_loader(THREAD, class_loader); | |
| 873 Handle h_prot (THREAD, protection_domain); | |
| 874 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 875 h_prot, true, thread); | |
| 876 | |
| 877 if (TraceClassResolution && result != NULL) { | |
| 878 // this function is generally only used for class loading during verification. | |
| 879 ResourceMark rm; | |
| 880 oop from_mirror = JNIHandles::resolve_non_null(from); | |
|
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881 Klass* from_class = java_lang_Class::as_Klass(from_mirror); |
| 6983 | 882 const char * from_name = from_class->external_name(); |
| 0 | 883 |
| 884 oop mirror = JNIHandles::resolve_non_null(result); | |
|
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885 Klass* to_class = java_lang_Class::as_Klass(mirror); |
| 6983 | 886 const char * to = to_class->external_name(); |
| 0 | 887 tty->print("RESOLVE %s %s (verification)\n", from_name, to); |
| 888 } | |
| 889 | |
| 890 return result; | |
| 891 JVM_END | |
| 892 | |
| 893 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
| 894 if (loader.is_null()) { | |
| 895 return; | |
| 896 } | |
| 897 | |
| 898 // check whether the current caller thread holds the lock or not. | |
| 899 // If not, increment the corresponding counter | |
| 900 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
| 901 ObjectSynchronizer::owner_self) { | |
| 902 counter->inc(); | |
| 903 } | |
| 904 } | |
| 905 | |
| 906 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
|
973
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|
907 // and JVM_DefineClassWithSourceCond() |
|
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|
908 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
|
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909 jobject loader, const jbyte *buf, |
|
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910 jsize len, jobject pd, const char *source, |
|
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|
911 jboolean verify, TRAPS) { |
|
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|
912 if (source == NULL) source = "__JVM_DefineClass__"; |
| 0 | 913 |
|
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|
914 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
|
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|
915 JavaThread* jt = (JavaThread*) THREAD; |
|
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|
916 |
|
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|
917 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
|
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918 ClassLoader::perf_define_appclass_selftime(), |
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919 ClassLoader::perf_define_appclasses(), |
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920 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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921 jt->get_thread_stat()->perf_timers_addr(), |
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922 PerfClassTraceTime::DEFINE_CLASS); |
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923 |
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924 if (UsePerfData) { |
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925 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
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926 } |
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927 |
| 0 | 928 // Since exceptions can be thrown, class initialization can take place |
| 929 // if name is NULL no check for class name in .class stream has to be made. | |
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930 TempNewSymbol class_name = NULL; |
| 0 | 931 if (name != NULL) { |
| 932 const int str_len = (int)strlen(name); | |
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933 if (str_len > Symbol::max_length()) { |
| 0 | 934 // It's impossible to create this class; the name cannot fit |
| 935 // into the constant pool. | |
| 936 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 937 } | |
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938 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
| 0 | 939 } |
| 940 | |
| 941 ResourceMark rm(THREAD); | |
| 942 ClassFileStream st((u1*) buf, len, (char *)source); | |
| 943 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
| 944 if (UsePerfData) { | |
| 945 is_lock_held_by_thread(class_loader, | |
| 946 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
| 947 THREAD); | |
| 948 } | |
| 949 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
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950 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, |
| 0 | 951 protection_domain, &st, |
|
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952 verify != 0, |
| 0 | 953 CHECK_NULL); |
| 954 | |
| 955 if (TraceClassResolution && k != NULL) { | |
| 956 trace_class_resolution(k); | |
| 957 } | |
| 958 | |
| 6983 | 959 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
| 0 | 960 } |
| 961 | |
| 962 | |
| 963 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
| 964 JVMWrapper2("JVM_DefineClass %s", name); | |
| 965 | |
|
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966 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
| 0 | 967 JVM_END |
| 968 | |
| 969 | |
| 970 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
| 971 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
| 972 | |
|
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973 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
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974 JVM_END |
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975 |
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976 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
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977 jobject loader, const jbyte *buf, |
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978 jsize len, jobject pd, |
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979 const char *source, jboolean verify)) |
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980 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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981 |
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982 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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983 JVM_END |
| 0 | 984 |
| 985 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
| 986 JVMWrapper("JVM_FindLoadedClass"); | |
| 987 ResourceMark rm(THREAD); | |
| 988 | |
| 989 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 990 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
| 991 | |
| 992 const char* str = java_lang_String::as_utf8_string(string()); | |
| 993 // Sanity check, don't expect null | |
| 994 if (str == NULL) return NULL; | |
| 995 | |
| 996 const int str_len = (int)strlen(str); | |
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997 if (str_len > Symbol::max_length()) { |
| 0 | 998 // It's impossible to create this class; the name cannot fit |
| 999 // into the constant pool. | |
| 1000 return NULL; | |
| 1001 } | |
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1002 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
| 0 | 1003 |
| 1004 // Security Note: | |
| 1005 // The Java level wrapper will perform the necessary security check allowing | |
| 1006 // us to pass the NULL as the initiating class loader. | |
| 1007 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
| 1008 if (UsePerfData) { | |
| 1009 is_lock_held_by_thread(h_loader, | |
| 1010 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
| 1011 THREAD); | |
| 1012 } | |
| 1013 | |
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1014 Klass* k = SystemDictionary::find_instance_or_array_klass(klass_name, |
| 0 | 1015 h_loader, |
| 1016 Handle(), | |
| 1017 CHECK_NULL); | |
| 1018 | |
| 1019 return (k == NULL) ? NULL : | |
| 6983 | 1020 (jclass) JNIHandles::make_local(env, k->java_mirror()); |
| 0 | 1021 JVM_END |
| 1022 | |
| 1023 | |
| 1024 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
| 1025 | |
| 1026 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
| 1027 assert (cls != NULL, "illegal class"); | |
| 1028 JVMWrapper("JVM_GetClassName"); | |
| 1029 JvmtiVMObjectAllocEventCollector oam; | |
| 1030 ResourceMark rm(THREAD); | |
| 1031 const char* name; | |
| 1032 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1033 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
| 1034 } else { | |
| 1035 // Consider caching interned string in Klass | |
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1036 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 0 | 1037 assert(k->is_klass(), "just checking"); |
| 6983 | 1038 name = k->external_name(); |
| 0 | 1039 } |
| 1040 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
| 1041 return (jstring) JNIHandles::make_local(env, result); | |
| 1042 JVM_END | |
| 1043 | |
| 1044 | |
| 1045 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
| 1046 JVMWrapper("JVM_GetClassInterfaces"); | |
| 1047 JvmtiVMObjectAllocEventCollector oam; | |
| 1048 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1049 | |
| 1050 // Special handling for primitive objects | |
| 1051 if (java_lang_Class::is_primitive(mirror)) { | |
| 1052 // Primitive objects does not have any interfaces | |
| 1142 | 1053 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1054 return (jobjectArray) JNIHandles::make_local(env, r); |
| 1055 } | |
| 1056 | |
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1057 KlassHandle klass(thread, java_lang_Class::as_Klass(mirror)); |
| 0 | 1058 // Figure size of result array |
| 1059 int size; | |
| 1060 if (klass->oop_is_instance()) { | |
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1061 size = InstanceKlass::cast(klass())->local_interfaces()->length(); |
| 0 | 1062 } else { |
| 1063 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
| 1064 size = 2; | |
| 1065 } | |
| 1066 | |
| 1067 // Allocate result array | |
| 1142 | 1068 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
| 0 | 1069 objArrayHandle result (THREAD, r); |
| 1070 // Fill in result | |
| 1071 if (klass->oop_is_instance()) { | |
| 1072 // Regular instance klass, fill in all local interfaces | |
| 1073 for (int index = 0; index < size; index++) { | |
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1074 Klass* k = InstanceKlass::cast(klass())->local_interfaces()->at(index); |
| 6983 | 1075 result->obj_at_put(index, k->java_mirror()); |
| 0 | 1076 } |
| 1077 } else { | |
| 1078 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
| 6983 | 1079 result->obj_at_put(0, SystemDictionary::Cloneable_klass()->java_mirror()); |
| 1080 result->obj_at_put(1, SystemDictionary::Serializable_klass()->java_mirror()); | |
| 0 | 1081 } |
| 1082 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1083 JVM_END | |
| 1084 | |
| 1085 | |
| 1086 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
| 1087 JVMWrapper("JVM_GetClassLoader"); | |
| 1088 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1089 return NULL; | |
| 1090 } | |
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1091 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1092 oop loader = k->class_loader(); |
| 0 | 1093 return JNIHandles::make_local(env, loader); |
| 1094 JVM_END | |
| 1095 | |
| 1096 | |
| 1097 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
| 1098 JVMWrapper("JVM_IsInterface"); | |
| 1099 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1100 if (java_lang_Class::is_primitive(mirror)) { | |
| 1101 return JNI_FALSE; | |
| 1102 } | |
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1103 Klass* k = java_lang_Class::as_Klass(mirror); |
| 6983 | 1104 jboolean result = k->is_interface(); |
| 1105 assert(!result || k->oop_is_instance(), | |
| 0 | 1106 "all interfaces are instance types"); |
| 1107 // The compiler intrinsic for isInterface tests the | |
| 1108 // Klass::_access_flags bits in the same way. | |
| 1109 return result; | |
| 1110 JVM_END | |
| 1111 | |
| 1112 | |
| 1113 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
| 1114 JVMWrapper("JVM_GetClassSigners"); | |
| 1115 JvmtiVMObjectAllocEventCollector oam; | |
| 1116 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1117 // There are no signers for primitive types | |
| 1118 return NULL; | |
| 1119 } | |
| 1120 | |
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1121 objArrayOop signers = java_lang_Class::signers(JNIHandles::resolve_non_null(cls)); |
| 0 | 1122 |
| 1123 // If there are no signers set in the class, or if the class | |
| 1124 // is an array, return NULL. | |
| 1125 if (signers == NULL) return NULL; | |
| 1126 | |
| 1127 // copy of the signers array | |
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1128 Klass* element = ObjArrayKlass::cast(signers->klass())->element_klass(); |
| 0 | 1129 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); |
| 1130 for (int index = 0; index < signers->length(); index++) { | |
| 1131 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
| 1132 } | |
| 1133 | |
| 1134 // return the copy | |
| 1135 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
| 1136 JVM_END | |
| 1137 | |
| 1138 | |
| 1139 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
| 1140 JVMWrapper("JVM_SetClassSigners"); | |
| 1141 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1142 // This call is ignored for primitive types and arrays. | |
| 1143 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
| 1144 // be called with an array. Only the bootstrap loader creates arrays. | |
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1145 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1146 if (k->oop_is_instance()) { |
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1147 java_lang_Class::set_signers(k->java_mirror(), objArrayOop(JNIHandles::resolve(signers))); |
| 0 | 1148 } |
| 1149 } | |
| 1150 JVM_END | |
| 1151 | |
| 1152 | |
| 1153 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
| 1154 JVMWrapper("JVM_GetProtectionDomain"); | |
| 1155 if (JNIHandles::resolve(cls) == NULL) { | |
| 1156 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
| 1157 } | |
| 1158 | |
| 1159 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1160 // Primitive types does not have a protection domain. | |
| 1161 return NULL; | |
| 1162 } | |
| 1163 | |
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1164 oop pd = java_lang_Class::protection_domain(JNIHandles::resolve(cls)); |
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1165 return (jobject) JNIHandles::make_local(env, pd); |
| 0 | 1166 JVM_END |
| 1167 | |
| 1168 | |
| 11010 | 1169 static bool is_authorized(Handle context, instanceKlassHandle klass, TRAPS) { |
| 1170 // If there is a security manager and protection domain, check the access | |
| 1171 // in the protection domain, otherwise it is authorized. | |
| 1172 if (java_lang_System::has_security_manager()) { | |
| 1173 | |
| 1174 // For bootstrapping, if pd implies method isn't in the JDK, allow | |
| 1175 // this context to revert to older behavior. | |
| 1176 // In this case the isAuthorized field in AccessControlContext is also not | |
| 1177 // present. | |
| 1178 if (Universe::protection_domain_implies_method() == NULL) { | |
| 1179 return true; | |
| 1180 } | |
| 1181 | |
| 1182 // Whitelist certain access control contexts | |
| 1183 if (java_security_AccessControlContext::is_authorized(context)) { | |
| 1184 return true; | |
| 1185 } | |
| 1186 | |
| 1187 oop prot = klass->protection_domain(); | |
| 1188 if (prot != NULL) { | |
| 1189 // Call pd.implies(new SecurityPermission("createAccessControlContext")) | |
| 1190 // in the new wrapper. | |
| 1191 methodHandle m(THREAD, Universe::protection_domain_implies_method()); | |
| 1192 Handle h_prot(THREAD, prot); | |
| 1193 JavaValue result(T_BOOLEAN); | |
| 1194 JavaCallArguments args(h_prot); | |
| 1195 JavaCalls::call(&result, m, &args, CHECK_false); | |
| 1196 return (result.get_jboolean() != 0); | |
| 1197 } | |
| 1198 } | |
| 1199 return true; | |
| 1200 } | |
| 1201 | |
| 1202 // Create an AccessControlContext with a protection domain with null codesource | |
| 1203 // and null permissions - which gives no permissions. | |
| 1204 oop create_dummy_access_control_context(TRAPS) { | |
| 1205 InstanceKlass* pd_klass = InstanceKlass::cast(SystemDictionary::ProtectionDomain_klass()); | |
| 1206 // new ProtectionDomain(null,null); | |
| 1207 oop null_protection_domain = pd_klass->allocate_instance(CHECK_NULL); | |
| 1208 Handle null_pd(THREAD, null_protection_domain); | |
| 1209 | |
| 1210 // new ProtectionDomain[] {pd}; | |
| 1211 objArrayOop context = oopFactory::new_objArray(pd_klass, 1, CHECK_NULL); | |
| 1212 context->obj_at_put(0, null_pd()); | |
| 1213 | |
| 1214 // new AccessControlContext(new ProtectionDomain[] {pd}) | |
| 1215 objArrayHandle h_context(THREAD, context); | |
| 1216 oop result = java_security_AccessControlContext::create(h_context, false, Handle(), CHECK_NULL); | |
| 1217 return result; | |
| 1218 } | |
| 0 | 1219 |
| 1220 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
| 1221 JVMWrapper("JVM_DoPrivileged"); | |
| 1222 | |
| 1223 if (action == NULL) { | |
| 1224 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
| 1225 } | |
| 1226 | |
| 11010 | 1227 // Compute the frame initiating the do privileged operation and setup the privileged stack |
| 1228 vframeStream vfst(thread); | |
| 1229 vfst.security_get_caller_frame(1); | |
| 1230 | |
| 1231 if (vfst.at_end()) { | |
| 1232 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "no caller?"); | |
| 1233 } | |
| 1234 | |
| 1235 Method* method = vfst.method(); | |
| 1236 instanceKlassHandle klass (THREAD, method->method_holder()); | |
| 1237 | |
| 1238 // Check that action object understands "Object run()" | |
| 1239 Handle h_context; | |
| 1240 if (context != NULL) { | |
| 1241 h_context = Handle(THREAD, JNIHandles::resolve(context)); | |
| 1242 bool authorized = is_authorized(h_context, klass, CHECK_NULL); | |
| 1243 if (!authorized) { | |
| 1244 // Create an unprivileged access control object and call it's run function | |
| 1245 // instead. | |
| 1246 oop noprivs = create_dummy_access_control_context(CHECK_NULL); | |
| 1247 h_context = Handle(THREAD, noprivs); | |
| 1248 } | |
| 1249 } | |
| 0 | 1250 |
| 1251 // Check that action object understands "Object run()" | |
| 1252 Handle object (THREAD, JNIHandles::resolve(action)); | |
| 1253 | |
| 1254 // get run() method | |
| 6983 | 1255 Method* m_oop = object->klass()->uncached_lookup_method( |
| 0 | 1256 vmSymbols::run_method_name(), |
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1257 vmSymbols::void_object_signature(), |
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1258 Klass::normal); |
| 0 | 1259 methodHandle m (THREAD, m_oop); |
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1260 if (m.is_null() || !m->is_method() || !m()->is_public() || m()->is_static()) { |
| 0 | 1261 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); |
| 1262 } | |
| 1263 | |
| 11010 | 1264 // Stack allocated list of privileged stack elements |
| 1265 PrivilegedElement pi; | |
| 0 | 1266 if (!vfst.at_end()) { |
| 11010 | 1267 pi.initialize(&vfst, h_context(), thread->privileged_stack_top(), CHECK_NULL); |
| 0 | 1268 thread->set_privileged_stack_top(&pi); |
| 1269 } | |
| 1270 | |
| 1271 | |
| 1272 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
| 1273 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
| 1274 Handle pending_exception; | |
| 1275 JavaValue result(T_OBJECT); | |
| 1276 JavaCallArguments args(object); | |
| 1277 JavaCalls::call(&result, m, &args, THREAD); | |
| 1278 | |
| 1279 // done with action, remove ourselves from the list | |
| 1280 if (!vfst.at_end()) { | |
| 1281 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
| 1282 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
| 1283 } | |
| 1284 | |
| 1285 if (HAS_PENDING_EXCEPTION) { | |
| 1286 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
| 1287 CLEAR_PENDING_EXCEPTION; | |
| 1288 | |
| 1142 | 1289 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
| 1290 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
| 0 | 1291 // Throw a java.security.PrivilegedActionException(Exception e) exception |
| 1292 JavaCallArguments args(pending_exception); | |
|
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1293 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1294 vmSymbols::exception_void_signature(), |
| 0 | 1295 &args); |
| 1296 } | |
| 1297 } | |
| 1298 | |
| 1299 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
| 1300 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
| 1301 JVM_END | |
| 1302 | |
| 1303 | |
| 1304 // Returns the inherited_access_control_context field of the running thread. | |
| 1305 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1306 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
| 1307 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
| 1308 return JNIHandles::make_local(env, result); | |
| 1309 JVM_END | |
| 1310 | |
| 1311 class RegisterArrayForGC { | |
| 1312 private: | |
| 1313 JavaThread *_thread; | |
| 1314 public: | |
| 1315 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
| 1316 _thread = thread; | |
| 1317 _thread->register_array_for_gc(array); | |
| 1318 } | |
| 1319 | |
| 1320 ~RegisterArrayForGC() { | |
| 1321 _thread->register_array_for_gc(NULL); | |
| 1322 } | |
| 1323 }; | |
| 1324 | |
| 1325 | |
| 1326 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1327 JVMWrapper("JVM_GetStackAccessControlContext"); | |
| 1328 if (!UsePrivilegedStack) return NULL; | |
| 1329 | |
| 1330 ResourceMark rm(THREAD); | |
| 1331 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
| 1332 JvmtiVMObjectAllocEventCollector oam; | |
| 1333 | |
| 1334 // count the protection domains on the execution stack. We collapse | |
| 1335 // duplicate consecutive protection domains into a single one, as | |
| 1336 // well as stopping when we hit a privileged frame. | |
| 1337 | |
| 1338 // Use vframeStream to iterate through Java frames | |
| 1339 vframeStream vfst(thread); | |
| 1340 | |
| 1341 oop previous_protection_domain = NULL; | |
| 1342 Handle privileged_context(thread, NULL); | |
| 1343 bool is_privileged = false; | |
| 1344 oop protection_domain = NULL; | |
| 1345 | |
| 1346 for(; !vfst.at_end(); vfst.next()) { | |
| 1347 // get method of frame | |
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1348 Method* method = vfst.method(); |
| 0 | 1349 intptr_t* frame_id = vfst.frame_id(); |
| 1350 | |
| 1351 // check the privileged frames to see if we have a match | |
| 1352 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
| 1353 // this frame is privileged | |
| 1354 is_privileged = true; | |
| 1355 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
| 1356 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
| 1357 } else { | |
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1358 protection_domain = method->method_holder()->protection_domain(); |
| 0 | 1359 } |
| 1360 | |
| 1361 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
| 1362 local_array->push(protection_domain); | |
| 1363 previous_protection_domain = protection_domain; | |
| 1364 } | |
| 1365 | |
| 1366 if (is_privileged) break; | |
| 1367 } | |
| 1368 | |
| 1369 | |
| 1370 // either all the domains on the stack were system domains, or | |
| 1371 // we had a privileged system domain | |
| 1372 if (local_array->is_empty()) { | |
| 1373 if (is_privileged && privileged_context.is_null()) return NULL; | |
| 1374 | |
| 1375 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
| 1376 return JNIHandles::make_local(env, result); | |
| 1377 } | |
| 1378 | |
| 1379 // the resource area must be registered in case of a gc | |
| 1380 RegisterArrayForGC ragc(thread, local_array); | |
| 1142 | 1381 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
| 0 | 1382 local_array->length(), CHECK_NULL); |
| 1383 objArrayHandle h_context(thread, context); | |
| 1384 for (int index = 0; index < local_array->length(); index++) { | |
| 1385 h_context->obj_at_put(index, local_array->at(index)); | |
| 1386 } | |
| 1387 | |
| 1388 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
| 1389 | |
| 1390 return JNIHandles::make_local(env, result); | |
| 1391 JVM_END | |
| 1392 | |
| 1393 | |
| 1394 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
| 1395 JVMWrapper("JVM_IsArrayClass"); | |
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1396 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1397 return (k != NULL) && k->oop_is_array() ? true : false; |
| 0 | 1398 JVM_END |
| 1399 | |
| 1400 | |
| 1401 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
| 1402 JVMWrapper("JVM_IsPrimitiveClass"); | |
| 1403 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1404 return (jboolean) java_lang_Class::is_primitive(mirror); | |
| 1405 JVM_END | |
| 1406 | |
| 1407 | |
| 1408 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
| 1409 JVMWrapper("JVM_GetComponentType"); | |
| 1410 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1411 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
| 1412 return (jclass) JNIHandles::make_local(env, result); | |
| 1413 JVM_END | |
| 1414 | |
| 1415 | |
| 1416 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
| 1417 JVMWrapper("JVM_GetClassModifiers"); | |
| 1418 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1419 // Primitive type | |
| 1420 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 1421 } | |
| 1422 | |
| 6983 | 1423 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 1424 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); |
| 1425 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
| 1426 return k->modifier_flags(); | |
| 1427 JVM_END | |
| 1428 | |
| 1429 | |
| 1430 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
| 1431 | |
| 1432 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
| 1433 JvmtiVMObjectAllocEventCollector oam; | |
| 1434 // ofClass is a reference to a java_lang_Class object. The mirror object | |
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1435 // of an InstanceKlass |
| 0 | 1436 |
| 1437 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1438 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
| 1142 | 1439 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1440 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1441 } | |
| 1442 | |
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1443 instanceKlassHandle k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
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1444 InnerClassesIterator iter(k); |
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1445 |
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1446 if (iter.length() == 0) { |
| 0 | 1447 // Neither an inner nor outer class |
| 1142 | 1448 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1449 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1450 } | |
| 1451 | |
| 1452 // find inner class info | |
| 1453 constantPoolHandle cp(thread, k->constants()); | |
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1454 int length = iter.length(); |
| 0 | 1455 |
| 1456 // Allocate temp. result array | |
| 1142 | 1457 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
| 0 | 1458 objArrayHandle result (THREAD, r); |
| 1459 int members = 0; | |
| 1460 | |
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1461 for (; !iter.done(); iter.next()) { |
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1462 int ioff = iter.inner_class_info_index(); |
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1463 int ooff = iter.outer_class_info_index(); |
| 0 | 1464 |
| 1465 if (ioff != 0 && ooff != 0) { | |
| 1466 // Check to see if the name matches the class we're looking for | |
| 1467 // before attempting to find the class. | |
| 1468 if (cp->klass_name_at_matches(k, ooff)) { | |
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1469 Klass* outer_klass = cp->klass_at(ooff, CHECK_NULL); |
| 0 | 1470 if (outer_klass == k()) { |
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1471 Klass* ik = cp->klass_at(ioff, CHECK_NULL); |
| 0 | 1472 instanceKlassHandle inner_klass (THREAD, ik); |
| 1473 | |
| 1474 // Throws an exception if outer klass has not declared k as | |
| 1475 // an inner klass | |
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1476 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
| 0 | 1477 |
| 1478 result->obj_at_put(members, inner_klass->java_mirror()); | |
| 1479 members++; | |
| 1480 } | |
| 1481 } | |
| 1482 } | |
| 1483 } | |
| 1484 | |
| 1485 if (members != length) { | |
| 1486 // Return array of right length | |
| 1142 | 1487 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
| 0 | 1488 for(int i = 0; i < members; i++) { |
| 1489 res->obj_at_put(i, result->obj_at(i)); | |
| 1490 } | |
| 1491 return (jobjectArray)JNIHandles::make_local(env, res); | |
| 1492 } | |
| 1493 | |
| 1494 return (jobjectArray)JNIHandles::make_local(env, result()); | |
| 1495 JVM_END | |
| 1496 | |
| 1497 | |
| 1498 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
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1499 { |
| 0 | 1500 // ofClass is a reference to a java_lang_Class object. |
| 1501 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1502 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
| 0 | 1503 return NULL; |
| 1504 } | |
| 1505 | |
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1506 bool inner_is_member = false; |
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1507 Klass* outer_klass |
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1508 = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)) |
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1509 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
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1510 if (outer_klass == NULL) return NULL; // already a top-level class |
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1511 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
| 6983 | 1512 return (jclass) JNIHandles::make_local(env, outer_klass->java_mirror()); |
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1513 } |
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1514 JVM_END |
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1515 |
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1516 // should be in InstanceKlass.cpp, but is here for historical reasons |
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1517 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
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1518 bool* inner_is_member, |
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1519 TRAPS) { |
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1520 Thread* thread = THREAD; |
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1521 InnerClassesIterator iter(k); |
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1522 if (iter.length() == 0) { |
| 0 | 1523 // No inner class info => no declaring class |
| 1524 return NULL; | |
| 1525 } | |
| 1526 | |
| 1527 constantPoolHandle i_cp(thread, k->constants()); | |
| 1528 | |
| 1529 bool found = false; | |
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1530 Klass* ok; |
| 0 | 1531 instanceKlassHandle outer_klass; |
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1532 *inner_is_member = false; |
| 0 | 1533 |
| 1534 // Find inner_klass attribute | |
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1535 for (; !iter.done() && !found; iter.next()) { |
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1536 int ioff = iter.inner_class_info_index(); |
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1537 int ooff = iter.outer_class_info_index(); |
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1538 int noff = iter.inner_name_index(); |
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1539 if (ioff != 0) { |
| 0 | 1540 // Check to see if the name matches the class we're looking for |
| 1541 // before attempting to find the class. | |
| 1542 if (i_cp->klass_name_at_matches(k, ioff)) { | |
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1543 Klass* inner_klass = i_cp->klass_at(ioff, CHECK_NULL); |
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1544 found = (k() == inner_klass); |
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1545 if (found && ooff != 0) { |
| 0 | 1546 ok = i_cp->klass_at(ooff, CHECK_NULL); |
| 1547 outer_klass = instanceKlassHandle(thread, ok); | |
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1548 *inner_is_member = true; |
| 0 | 1549 } |
| 1550 } | |
| 1551 } | |
| 1552 } | |
| 1553 | |
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1554 if (found && outer_klass.is_null()) { |
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1555 // It may be anonymous; try for that. |
|
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1556 int encl_method_class_idx = k->enclosing_method_class_index(); |
|
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|
1557 if (encl_method_class_idx != 0) { |
|
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|
1558 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
|
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|
1559 outer_klass = instanceKlassHandle(thread, ok); |
|
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|
1560 *inner_is_member = false; |
|
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|
1561 } |
|
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|
1562 } |
|
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|
1563 |
| 0 | 1564 // If no inner class attribute found for this class. |
|
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|
1565 if (outer_klass.is_null()) return NULL; |
| 0 | 1566 |
| 1567 // Throws an exception if outer klass has not declared k as an inner klass | |
|
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|
1568 // We need evidence that each klass knows about the other, or else |
|
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|
1569 // the system could allow a spoof of an inner class to gain access rights. |
|
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|
1570 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
|
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|
1571 return outer_klass(); |
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|
1572 } |
| 0 | 1573 |
| 1574 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
| 1575 assert (cls != NULL, "illegal class"); | |
| 1576 JVMWrapper("JVM_GetClassSignature"); | |
| 1577 JvmtiVMObjectAllocEventCollector oam; | |
| 1578 ResourceMark rm(THREAD); | |
| 1579 // Return null for arrays and primatives | |
| 1580 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
|
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|
1581 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 6983 | 1582 if (k->oop_is_instance()) { |
|
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|
1583 Symbol* sym = InstanceKlass::cast(k)->generic_signature(); |
|
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|
1584 if (sym == NULL) return NULL; |
| 0 | 1585 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 1586 return (jstring) JNIHandles::make_local(env, str()); | |
| 1587 } | |
| 1588 } | |
| 1589 return NULL; | |
| 1590 JVM_END | |
| 1591 | |
| 1592 | |
| 1593 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
| 1594 assert (cls != NULL, "illegal class"); | |
| 1595 JVMWrapper("JVM_GetClassAnnotations"); | |
|
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|
1596 |
| 0 | 1597 // Return null for arrays and primitives |
| 1598 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
|
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1599 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 6983 | 1600 if (k->oop_is_instance()) { |
|
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1601 typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->class_annotations(), CHECK_NULL); |
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1602 return (jbyteArray) JNIHandles::make_local(env, a); |
| 0 | 1603 } |
| 1604 } | |
| 1605 return NULL; | |
| 1606 JVM_END | |
| 1607 | |
| 1608 | |
|
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|
1609 static bool jvm_get_field_common(jobject field, fieldDescriptor& fd, TRAPS) { |
| 0 | 1610 // some of this code was adapted from from jni_FromReflectedField |
| 1611 | |
| 1612 oop reflected = JNIHandles::resolve_non_null(field); | |
| 1613 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
|
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1614 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 1615 int slot = java_lang_reflect_Field::slot(reflected); |
| 1616 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
| 1617 | |
| 1618 KlassHandle kh(THREAD, k); | |
|
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|
1619 intptr_t offset = InstanceKlass::cast(kh())->field_offset(slot); |
| 0 | 1620 |
| 1621 if (modifiers & JVM_ACC_STATIC) { | |
| 1622 // for static fields we only look in the current class | |
|
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1623 if (!InstanceKlass::cast(kh())->find_local_field_from_offset(offset, true, &fd)) { |
| 0 | 1624 assert(false, "cannot find static field"); |
|
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|
1625 return false; |
| 0 | 1626 } |
| 1627 } else { | |
| 1628 // for instance fields we start with the current class and work | |
| 1629 // our way up through the superclass chain | |
|
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|
1630 if (!InstanceKlass::cast(kh())->find_field_from_offset(offset, false, &fd)) { |
| 0 | 1631 assert(false, "cannot find instance field"); |
|
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|
1632 return false; |
| 0 | 1633 } |
| 1634 } | |
|
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|
1635 return true; |
|
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|
1636 } |
|
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|
1637 |
|
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|
1638 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) |
|
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|
1639 // field is a handle to a java.lang.reflect.Field object |
|
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|
1640 assert(field != NULL, "illegal field"); |
|
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|
1641 JVMWrapper("JVM_GetFieldAnnotations"); |
|
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|
1642 |
|
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|
1643 fieldDescriptor fd; |
|
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|
1644 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
|
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|
1645 if (!gotFd) { |
|
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|
1646 return NULL; |
|
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|
1647 } |
| 0 | 1648 |
|
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|
1649 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.annotations(), THREAD)); |
| 0 | 1650 JVM_END |
| 1651 | |
| 1652 | |
|
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|
1653 static Method* jvm_get_method_common(jobject method) { |
| 0 | 1654 // some of this code was adapted from from jni_FromReflectedMethod |
| 1655 | |
| 1656 oop reflected = JNIHandles::resolve_non_null(method); | |
| 1657 oop mirror = NULL; | |
| 1658 int slot = 0; | |
| 1659 | |
| 1142 | 1660 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
| 0 | 1661 mirror = java_lang_reflect_Constructor::clazz(reflected); |
| 1662 slot = java_lang_reflect_Constructor::slot(reflected); | |
| 1663 } else { | |
| 1142 | 1664 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
| 0 | 1665 "wrong type"); |
| 1666 mirror = java_lang_reflect_Method::clazz(reflected); | |
| 1667 slot = java_lang_reflect_Method::slot(reflected); | |
| 1668 } | |
|
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|
1669 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 1670 |
|
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|
1671 Method* m = InstanceKlass::cast(k)->method_with_idnum(slot); |
|
8818
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|
1672 assert(m != NULL, "cannot find method"); |
|
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|
1673 return m; // caller has to deal with NULL in product mode |
| 0 | 1674 } |
| 1675 | |
| 1676 | |
| 1677 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
| 1678 JVMWrapper("JVM_GetMethodAnnotations"); | |
| 1679 | |
| 1680 // method is a handle to a java.lang.reflect.Method object | |
|
7462
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|
1681 Method* m = jvm_get_method_common(method); |
|
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|
1682 if (m == NULL) { |
|
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|
1683 return NULL; |
|
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changeset
|
1684 } |
|
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|
1685 |
|
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|
1686 return (jbyteArray) JNIHandles::make_local(env, |
|
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|
1687 Annotations::make_java_array(m->annotations(), THREAD)); |
| 0 | 1688 JVM_END |
| 1689 | |
| 1690 | |
| 1691 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
| 1692 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
| 1693 | |
| 1694 // method is a handle to a java.lang.reflect.Method object | |
|
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|
1695 Method* m = jvm_get_method_common(method); |
|
8818
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|
1696 if (m == NULL) { |
|
1916ca1dec2f
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changeset
|
1697 return NULL; |
|
1916ca1dec2f
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diff
changeset
|
1698 } |
|
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|
1699 |
|
6725
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|
1700 return (jbyteArray) JNIHandles::make_local(env, |
|
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|
1701 Annotations::make_java_array(m->annotation_default(), THREAD)); |
| 0 | 1702 JVM_END |
| 1703 | |
| 1704 | |
| 1705 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
| 1706 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
| 1707 | |
| 1708 // method is a handle to a java.lang.reflect.Method object | |
|
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|
1709 Method* m = jvm_get_method_common(method); |
|
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|
1710 if (m == NULL) { |
|
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|
1711 return NULL; |
|
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changeset
|
1712 } |
|
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|
1713 |
|
6725
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|
1714 return (jbyteArray) JNIHandles::make_local(env, |
|
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|
1715 Annotations::make_java_array(m->parameter_annotations(), THREAD)); |
| 0 | 1716 JVM_END |
| 1717 | |
|
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|
1718 /* Type use annotations support (JDK 1.8) */ |
|
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|
1719 |
|
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|
1720 JVM_ENTRY(jbyteArray, JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls)) |
|
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|
1721 assert (cls != NULL, "illegal class"); |
|
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|
1722 JVMWrapper("JVM_GetClassTypeAnnotations"); |
|
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|
1723 ResourceMark rm(THREAD); |
|
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|
1724 // Return null for arrays and primitives |
|
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|
1725 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
|
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|
1726 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
|
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|
1727 if (k->oop_is_instance()) { |
| 8031 | 1728 AnnotationArray* type_annotations = InstanceKlass::cast(k)->class_type_annotations(); |
|
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|
1729 if (type_annotations != NULL) { |
| 8031 | 1730 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
|
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|
1731 return (jbyteArray) JNIHandles::make_local(env, a); |
|
ff0a7943fd29
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|
1732 } |
|
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|
1733 } |
|
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|
1734 } |
|
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|
1735 return NULL; |
|
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|
1736 JVM_END |
|
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|
1737 |
|
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|
1738 JVM_ENTRY(jbyteArray, JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method)) |
|
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|
1739 assert (method != NULL, "illegal method"); |
|
1916ca1dec2f
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changeset
|
1740 JVMWrapper("JVM_GetMethodTypeAnnotations"); |
|
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|
1741 |
|
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|
1742 // method is a handle to a java.lang.reflect.Method object |
|
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changeset
|
1743 Method* m = jvm_get_method_common(method); |
|
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|
1744 if (m == NULL) { |
|
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|
1745 return NULL; |
|
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|
1746 } |
|
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|
1747 |
|
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|
1748 AnnotationArray* type_annotations = m->type_annotations(); |
|
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|
1749 if (type_annotations != NULL) { |
|
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|
1750 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
|
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|
1751 return (jbyteArray) JNIHandles::make_local(env, a); |
|
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|
1752 } |
|
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|
1753 |
|
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|
1754 return NULL; |
|
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|
1755 JVM_END |
|
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|
1756 |
|
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|
1757 JVM_ENTRY(jbyteArray, JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field)) |
|
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|
1758 assert (field != NULL, "illegal field"); |
|
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|
1759 JVMWrapper("JVM_GetFieldTypeAnnotations"); |
|
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|
1760 |
|
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|
1761 fieldDescriptor fd; |
|
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|
1762 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
|
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|
1763 if (!gotFd) { |
|
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|
1764 return NULL; |
|
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|
1765 } |
|
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|
1766 |
|
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|
1767 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.type_annotations(), THREAD)); |
|
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|
1768 JVM_END |
|
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|
1769 |
|
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1770 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { |
|
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1771 if (!cp->is_within_bounds(index)) { |
|
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1772 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); |
|
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1773 } |
|
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1774 } |
|
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1775 |
|
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1776 JVM_ENTRY(jobjectArray, JVM_GetMethodParameters(JNIEnv *env, jobject method)) |
|
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1777 { |
|
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|
1778 JVMWrapper("JVM_GetMethodParameters"); |
|
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|
1779 // method is a handle to a java.lang.reflect.Method object |
|
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1780 Method* method_ptr = jvm_get_method_common(method); |
|
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1781 methodHandle mh (THREAD, method_ptr); |
|
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1782 Handle reflected_method (THREAD, JNIHandles::resolve_non_null(method)); |
|
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1783 const int num_params = mh->method_parameters_length(); |
|
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1784 |
|
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1785 if (0 != num_params) { |
|
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|
1786 // make sure all the symbols are properly formatted |
|
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1787 for (int i = 0; i < num_params; i++) { |
|
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1788 MethodParametersElement* params = mh->method_parameters_start(); |
|
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|
1789 int index = params[i].name_cp_index; |
|
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|
1790 bounds_check(mh->constants(), index, CHECK_NULL); |
|
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1791 |
|
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1792 if (0 != index && !mh->constants()->tag_at(index).is_utf8()) { |
|
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1793 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), |
|
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1794 "Wrong type at constant pool index"); |
|
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1795 } |
|
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1796 |
|
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1797 } |
|
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1798 |
|
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1799 objArrayOop result_oop = oopFactory::new_objArray(SystemDictionary::reflect_Parameter_klass(), num_params, CHECK_NULL); |
|
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1800 objArrayHandle result (THREAD, result_oop); |
|
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1801 |
|
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1802 for (int i = 0; i < num_params; i++) { |
|
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|
1803 MethodParametersElement* params = mh->method_parameters_start(); |
|
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1804 // For a 0 index, give a NULL symbol |
|
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1805 Symbol* sym = 0 != params[i].name_cp_index ? |
|
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|
1806 mh->constants()->symbol_at(params[i].name_cp_index) : NULL; |
|
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|
1807 int flags = params[i].flags; |
|
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|
1808 oop param = Reflection::new_parameter(reflected_method, i, sym, |
|
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1809 flags, CHECK_NULL); |
|
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|
1810 result->obj_at_put(i, param); |
|
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|
1811 } |
|
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|
1812 return (jobjectArray)JNIHandles::make_local(env, result()); |
|
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|
1813 } else { |
|
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|
1814 return (jobjectArray)NULL; |
|
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|
1815 } |
|
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|
1816 } |
|
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|
1817 JVM_END |
| 0 | 1818 |
| 1819 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
| 1820 | |
| 1821 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1822 { | |
| 1823 JVMWrapper("JVM_GetClassDeclaredFields"); | |
| 1824 JvmtiVMObjectAllocEventCollector oam; | |
| 1825 | |
| 1826 // Exclude primitive types and array types | |
| 1827 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1828 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
| 0 | 1829 // Return empty array |
| 1142 | 1830 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
| 0 | 1831 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1832 } | |
| 1833 | |
|
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1834 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
| 0 | 1835 constantPoolHandle cp(THREAD, k->constants()); |
| 1836 | |
| 1837 // Ensure class is linked | |
| 1838 k->link_class(CHECK_NULL); | |
| 1839 | |
| 1840 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
| 1841 bool skip_backtrace = false; | |
| 1842 | |
| 1843 // Allocate result | |
| 1844 int num_fields; | |
| 1845 | |
| 1846 if (publicOnly) { | |
| 1847 num_fields = 0; | |
| 3938 | 1848 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
| 1849 if (fs.access_flags().is_public()) ++num_fields; | |
| 0 | 1850 } |
| 1851 } else { | |
| 3938 | 1852 num_fields = k->java_fields_count(); |
| 0 | 1853 |
| 1142 | 1854 if (k() == SystemDictionary::Throwable_klass()) { |
| 0 | 1855 num_fields--; |
| 1856 skip_backtrace = true; | |
| 1857 } | |
| 1858 } | |
| 1859 | |
| 1142 | 1860 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
| 0 | 1861 objArrayHandle result (THREAD, r); |
| 1862 | |
| 1863 int out_idx = 0; | |
| 1864 fieldDescriptor fd; | |
| 3938 | 1865 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
| 0 | 1866 if (skip_backtrace) { |
| 1867 // 4496456 skip java.lang.Throwable.backtrace | |
| 3938 | 1868 int offset = fs.offset(); |
| 0 | 1869 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
| 1870 } | |
| 1871 | |
| 3938 | 1872 if (!publicOnly || fs.access_flags().is_public()) { |
|
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|
1873 fd.reinitialize(k(), fs.index()); |
| 0 | 1874 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
| 1875 result->obj_at_put(out_idx, field); | |
| 1876 ++out_idx; | |
| 1877 } | |
| 1878 } | |
| 1879 assert(out_idx == num_fields, "just checking"); | |
| 1880 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1881 } | |
| 1882 JVM_END | |
| 1883 | |
|
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1884 static bool select_method(methodHandle method, bool want_constructor) { |
|
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1885 if (want_constructor) { |
|
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1886 return (method->is_initializer() && !method->is_static()); |
|
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1887 } else { |
|
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1888 return (!method->is_initializer() && !method->is_overpass()); |
|
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1889 } |
|
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1890 } |
|
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1891 |
|
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|
1892 static jobjectArray get_class_declared_methods_helper( |
|
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1893 JNIEnv *env, |
|
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1894 jclass ofClass, jboolean publicOnly, |
|
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|
1895 bool want_constructor, |
|
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1896 Klass* klass, TRAPS) { |
|
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1897 |
| 0 | 1898 JvmtiVMObjectAllocEventCollector oam; |
| 1899 | |
| 1900 // Exclude primitive types and array types | |
| 1901 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
| 6983 | 1902 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
| 0 | 1903 // Return empty array |
|
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1904 oop res = oopFactory::new_objArray(klass, 0, CHECK_NULL); |
| 0 | 1905 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1906 } | |
| 1907 | |
|
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1908 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
| 0 | 1909 |
| 1910 // Ensure class is linked | |
| 1911 k->link_class(CHECK_NULL); | |
| 1912 | |
|
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1913 Array<Method*>* methods = k->methods(); |
| 0 | 1914 int methods_length = methods->length(); |
|
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1915 |
|
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1916 // Save original method_idnum in case of redefinition, which can change |
|
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1917 // the idnum of obsolete methods. The new method will have the same idnum |
|
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1918 // but if we refresh the methods array, the counts will be wrong. |
|
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|
1919 ResourceMark rm(THREAD); |
|
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1920 GrowableArray<int>* idnums = new GrowableArray<int>(methods_length); |
| 0 | 1921 int num_methods = 0; |
| 1922 | |
|
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1923 for (int i = 0; i < methods_length; i++) { |
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1924 methodHandle method(THREAD, methods->at(i)); |
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1925 if (select_method(method, want_constructor)) { |
| 0 | 1926 if (!publicOnly || method->is_public()) { |
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1927 idnums->push(method->method_idnum()); |
| 0 | 1928 ++num_methods; |
| 1929 } | |
| 1930 } | |
| 1931 } | |
| 1932 | |
| 1933 // Allocate result | |
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1934 objArrayOop r = oopFactory::new_objArray(klass, num_methods, CHECK_NULL); |
| 0 | 1935 objArrayHandle result (THREAD, r); |
| 1936 | |
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1937 // Now just put the methods that we selected above, but go by their idnum |
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1938 // in case of redefinition. The methods can be redefined at any safepoint, |
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1939 // so above when allocating the oop array and below when creating reflect |
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1940 // objects. |
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1941 for (int i = 0; i < num_methods; i++) { |
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1942 methodHandle method(THREAD, k->method_with_idnum(idnums->at(i))); |
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1943 if (method.is_null()) { |
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1944 // Method may have been deleted and seems this API can handle null |
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1945 // Otherwise should probably put a method that throws NSME |
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1946 result->obj_at_put(i, NULL); |
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1947 } else { |
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1948 oop m; |
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1949 if (want_constructor) { |
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1950 m = Reflection::new_constructor(method, CHECK_NULL); |
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1951 } else { |
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1952 m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); |
| 0 | 1953 } |
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1954 result->obj_at_put(i, m); |
| 0 | 1955 } |
| 1956 } | |
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1957 |
| 0 | 1958 return (jobjectArray) JNIHandles::make_local(env, result()); |
| 1959 } | |
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1960 |
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1961 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) |
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1962 { |
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1963 JVMWrapper("JVM_GetClassDeclaredMethods"); |
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1964 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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1965 /*want_constructor*/ false, |
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1966 SystemDictionary::reflect_Method_klass(), THREAD); |
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1967 } |
| 0 | 1968 JVM_END |
| 1969 | |
| 1970 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1971 { | |
| 1972 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
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1973 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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1974 /*want_constructor*/ true, |
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1975 SystemDictionary::reflect_Constructor_klass(), THREAD); |
| 0 | 1976 } |
| 1977 JVM_END | |
| 1978 | |
| 1979 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
| 1980 { | |
| 1981 JVMWrapper("JVM_GetClassAccessFlags"); | |
| 1982 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1983 // Primitive type | |
| 1984 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 1985 } | |
| 1986 | |
| 6983 | 1987 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 1988 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; |
| 1989 } | |
| 1990 JVM_END | |
| 1991 | |
| 1992 | |
| 1993 // Constant pool access ////////////////////////////////////////////////////////// | |
| 1994 | |
| 1995 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
| 1996 { | |
| 1997 JVMWrapper("JVM_GetClassConstantPool"); | |
| 1998 JvmtiVMObjectAllocEventCollector oam; | |
| 1999 | |
| 2000 // Return null for primitives and arrays | |
| 2001 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
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2002 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 2003 if (k->oop_is_instance()) { |
| 0 | 2004 instanceKlassHandle k_h(THREAD, k); |
| 2005 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
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2006 sun_reflect_ConstantPool::set_cp(jcp(), k_h->constants()); |
| 0 | 2007 return JNIHandles::make_local(jcp()); |
| 2008 } | |
| 2009 } | |
| 2010 return NULL; | |
| 2011 } | |
| 2012 JVM_END | |
| 2013 | |
| 2014 | |
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2015 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject obj, jobject unused)) |
| 0 | 2016 { |
| 2017 JVMWrapper("JVM_ConstantPoolGetSize"); | |
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2018 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2019 return cp->length(); |
| 2020 } | |
| 2021 JVM_END | |
| 2022 | |
| 2023 | |
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2024 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2025 { |
| 2026 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
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2027 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2028 bounds_check(cp, index, CHECK_NULL); |
| 2029 constantTag tag = cp->tag_at(index); | |
| 2030 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 2031 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2032 } | |
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2033 Klass* k = cp->klass_at(index, CHECK_NULL); |
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2034 return (jclass) JNIHandles::make_local(k->java_mirror()); |
| 0 | 2035 } |
| 2036 JVM_END | |
| 2037 | |
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2038 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2039 { |
| 2040 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
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2041 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2042 bounds_check(cp, index, CHECK_NULL); |
| 2043 constantTag tag = cp->tag_at(index); | |
| 2044 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 2045 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2046 } | |
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2047 Klass* k = ConstantPool::klass_at_if_loaded(cp, index); |
| 0 | 2048 if (k == NULL) return NULL; |
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2049 return (jclass) JNIHandles::make_local(k->java_mirror()); |
| 0 | 2050 } |
| 2051 JVM_END | |
| 2052 | |
| 2053 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 2054 constantTag tag = cp->tag_at(index); | |
| 2055 if (!tag.is_method() && !tag.is_interface_method()) { | |
| 2056 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2057 } | |
| 2058 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2059 Klass* k_o; |
| 0 | 2060 if (force_resolution) { |
| 2061 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 2062 } else { | |
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2063 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
| 0 | 2064 if (k_o == NULL) return NULL; |
| 2065 } | |
| 2066 instanceKlassHandle k(THREAD, k_o); | |
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2067 Symbol* name = cp->uncached_name_ref_at(index); |
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2068 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 2069 methodHandle m (THREAD, k->find_method(name, sig)); |
| 2070 if (m.is_null()) { | |
| 2071 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
| 2072 } | |
| 2073 oop method; | |
| 2074 if (!m->is_initializer() || m->is_static()) { | |
| 2075 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
| 2076 } else { | |
| 2077 method = Reflection::new_constructor(m, CHECK_NULL); | |
| 2078 } | |
| 2079 return JNIHandles::make_local(method); | |
| 2080 } | |
| 2081 | |
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2082 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2083 { |
| 2084 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
| 2085 JvmtiVMObjectAllocEventCollector oam; | |
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2086 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2087 bounds_check(cp, index, CHECK_NULL); |
| 2088 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
| 2089 return res; | |
| 2090 } | |
| 2091 JVM_END | |
| 2092 | |
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2093 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2094 { |
| 2095 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
| 2096 JvmtiVMObjectAllocEventCollector oam; | |
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2097 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2098 bounds_check(cp, index, CHECK_NULL); |
| 2099 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
| 2100 return res; | |
| 2101 } | |
| 2102 JVM_END | |
| 2103 | |
| 2104 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 2105 constantTag tag = cp->tag_at(index); | |
| 2106 if (!tag.is_field()) { | |
| 2107 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2108 } | |
| 2109 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2110 Klass* k_o; |
| 0 | 2111 if (force_resolution) { |
| 2112 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 2113 } else { | |
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2114 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
| 0 | 2115 if (k_o == NULL) return NULL; |
| 2116 } | |
| 2117 instanceKlassHandle k(THREAD, k_o); | |
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2118 Symbol* name = cp->uncached_name_ref_at(index); |
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2119 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 2120 fieldDescriptor fd; |
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2121 Klass* target_klass = k->find_field(name, sig, &fd); |
| 0 | 2122 if (target_klass == NULL) { |
| 2123 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
| 2124 } | |
| 2125 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
| 2126 return JNIHandles::make_local(field); | |
| 2127 } | |
| 2128 | |
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2129 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject obj, jobject unusedl, jint index)) |
| 0 | 2130 { |
| 2131 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
| 2132 JvmtiVMObjectAllocEventCollector oam; | |
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2133 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2134 bounds_check(cp, index, CHECK_NULL); |
| 2135 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
| 2136 return res; | |
| 2137 } | |
| 2138 JVM_END | |
| 2139 | |
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2140 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2141 { |
| 2142 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
| 2143 JvmtiVMObjectAllocEventCollector oam; | |
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2144 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2145 bounds_check(cp, index, CHECK_NULL); |
| 2146 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
| 2147 return res; | |
| 2148 } | |
| 2149 JVM_END | |
| 2150 | |
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2151 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2152 { |
| 2153 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
| 2154 JvmtiVMObjectAllocEventCollector oam; | |
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2155 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2156 bounds_check(cp, index, CHECK_NULL); |
| 2157 constantTag tag = cp->tag_at(index); | |
| 2158 if (!tag.is_field_or_method()) { | |
| 2159 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2160 } | |
| 2161 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2162 Symbol* klass_name = cp->klass_name_at(klass_ref); |
|
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2163 Symbol* member_name = cp->uncached_name_ref_at(index); |
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2164 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
| 1142 | 2165 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
| 0 | 2166 objArrayHandle dest(THREAD, dest_o); |
| 2167 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
| 2168 dest->obj_at_put(0, str()); | |
| 2169 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
| 2170 dest->obj_at_put(1, str()); | |
| 2171 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
| 2172 dest->obj_at_put(2, str()); | |
| 2173 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 2174 } | |
| 2175 JVM_END | |
| 2176 | |
|
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2177 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2178 { |
| 2179 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
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2180 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2181 bounds_check(cp, index, CHECK_0); |
| 2182 constantTag tag = cp->tag_at(index); | |
| 2183 if (!tag.is_int()) { | |
| 2184 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2185 } | |
| 2186 return cp->int_at(index); | |
| 2187 } | |
| 2188 JVM_END | |
| 2189 | |
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2190 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2191 { |
| 2192 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
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2193 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2194 bounds_check(cp, index, CHECK_(0L)); |
| 2195 constantTag tag = cp->tag_at(index); | |
| 2196 if (!tag.is_long()) { | |
| 2197 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2198 } | |
| 2199 return cp->long_at(index); | |
| 2200 } | |
| 2201 JVM_END | |
| 2202 | |
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2203 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2204 { |
| 2205 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
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2206 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2207 bounds_check(cp, index, CHECK_(0.0f)); |
| 2208 constantTag tag = cp->tag_at(index); | |
| 2209 if (!tag.is_float()) { | |
| 2210 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2211 } | |
| 2212 return cp->float_at(index); | |
| 2213 } | |
| 2214 JVM_END | |
| 2215 | |
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2216 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2217 { |
| 2218 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
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2219 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2220 bounds_check(cp, index, CHECK_(0.0)); |
| 2221 constantTag tag = cp->tag_at(index); | |
| 2222 if (!tag.is_double()) { | |
| 2223 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2224 } | |
| 2225 return cp->double_at(index); | |
| 2226 } | |
| 2227 JVM_END | |
| 2228 | |
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2229 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2230 { |
| 2231 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
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2232 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2233 bounds_check(cp, index, CHECK_NULL); |
| 2234 constantTag tag = cp->tag_at(index); | |
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2235 if (!tag.is_string()) { |
| 0 | 2236 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
| 2237 } | |
| 2238 oop str = cp->string_at(index, CHECK_NULL); | |
| 2239 return (jstring) JNIHandles::make_local(str); | |
| 2240 } | |
| 2241 JVM_END | |
| 2242 | |
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2243 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2244 { |
| 2245 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
| 2246 JvmtiVMObjectAllocEventCollector oam; | |
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2247 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2248 bounds_check(cp, index, CHECK_NULL); |
| 2249 constantTag tag = cp->tag_at(index); | |
| 2250 if (!tag.is_symbol()) { | |
| 2251 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2252 } | |
|
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2253 Symbol* sym = cp->symbol_at(index); |
| 0 | 2254 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 2255 return (jstring) JNIHandles::make_local(str()); | |
| 2256 } | |
| 2257 JVM_END | |
| 2258 | |
| 2259 | |
| 2260 // Assertion support. ////////////////////////////////////////////////////////// | |
| 2261 | |
| 2262 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
| 2263 JVMWrapper("JVM_DesiredAssertionStatus"); | |
| 2264 assert(cls != NULL, "bad class"); | |
| 2265 | |
| 2266 oop r = JNIHandles::resolve(cls); | |
| 2267 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
| 2268 if (java_lang_Class::is_primitive(r)) return false; | |
| 2269 | |
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2270 Klass* k = java_lang_Class::as_Klass(r); |
| 6983 | 2271 assert(k->oop_is_instance(), "must be an instance klass"); |
| 2272 if (! k->oop_is_instance()) return false; | |
| 0 | 2273 |
| 2274 ResourceMark rm(THREAD); | |
| 6983 | 2275 const char* name = k->name()->as_C_string(); |
| 2276 bool system_class = k->class_loader() == NULL; | |
| 0 | 2277 return JavaAssertions::enabled(name, system_class); |
| 2278 | |
| 2279 JVM_END | |
| 2280 | |
| 2281 | |
| 2282 // Return a new AssertionStatusDirectives object with the fields filled in with | |
| 2283 // command-line assertion arguments (i.e., -ea, -da). | |
| 2284 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
| 2285 JVMWrapper("JVM_AssertionStatusDirectives"); | |
| 2286 JvmtiVMObjectAllocEventCollector oam; | |
| 2287 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
| 2288 return JNIHandles::make_local(env, asd); | |
| 2289 JVM_END | |
| 2290 | |
| 2291 // Verification //////////////////////////////////////////////////////////////////////////////// | |
| 2292 | |
| 2293 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
| 2294 | |
| 2295 // RedefineClasses support: bug 6214132 caused verification to fail. | |
| 2296 // All functions from this section should call the jvmtiThreadSate function: | |
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2297 // Klass* class_to_verify_considering_redefinition(Klass* klass). |
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2298 // The function returns a Klass* of the _scratch_class if the verifier |
| 0 | 2299 // was invoked in the middle of the class redefinition. |
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2300 // Otherwise it returns its argument value which is the _the_class Klass*. |
| 0 | 2301 // Please, refer to the description in the jvmtiThreadSate.hpp. |
| 2302 | |
| 2303 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
| 2304 JVMWrapper("JVM_GetClassNameUTF"); | |
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2305 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2306 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2307 return k->name()->as_utf8(); |
| 0 | 2308 JVM_END |
| 2309 | |
| 2310 | |
| 2311 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
| 2312 JVMWrapper("JVM_GetClassCPTypes"); | |
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2313 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2314 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2315 // types will have length zero if this is not an InstanceKlass |
| 0 | 2316 // (length is determined by call to JVM_GetClassCPEntriesCount) |
| 6983 | 2317 if (k->oop_is_instance()) { |
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2318 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2319 for (int index = cp->length() - 1; index >= 0; index--) { |
| 2320 constantTag tag = cp->tag_at(index); | |
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2321 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : tag.value(); |
| 0 | 2322 } |
| 2323 } | |
| 2324 JVM_END | |
| 2325 | |
| 2326 | |
| 2327 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
| 2328 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
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2329 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2330 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2331 if (!k->oop_is_instance()) |
| 0 | 2332 return 0; |
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2333 return InstanceKlass::cast(k)->constants()->length(); |
| 0 | 2334 JVM_END |
| 2335 | |
| 2336 | |
| 2337 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
| 2338 JVMWrapper("JVM_GetClassFieldsCount"); | |
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2339 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2340 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2341 if (!k->oop_is_instance()) |
| 0 | 2342 return 0; |
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2343 return InstanceKlass::cast(k)->java_fields_count(); |
| 0 | 2344 JVM_END |
| 2345 | |
| 2346 | |
| 2347 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
| 2348 JVMWrapper("JVM_GetClassMethodsCount"); | |
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2349 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2350 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2351 if (!k->oop_is_instance()) |
| 0 | 2352 return 0; |
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2353 return InstanceKlass::cast(k)->methods()->length(); |
| 0 | 2354 JVM_END |
| 2355 | |
| 2356 | |
| 2357 // The following methods, used for the verifier, are never called with | |
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2358 // array klasses, so a direct cast to InstanceKlass is safe. |
| 0 | 2359 // Typically, these methods are called in a loop with bounds determined |
| 2360 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
| 2361 // zero for arrays. | |
| 2362 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
| 2363 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
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2364 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2365 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2366 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2367 int length = method->checked_exceptions_length(); |
| 0 | 2368 if (length > 0) { |
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2369 CheckedExceptionElement* table= method->checked_exceptions_start(); |
| 0 | 2370 for (int i = 0; i < length; i++) { |
| 2371 exceptions[i] = table[i].class_cp_index; | |
| 2372 } | |
| 2373 } | |
| 2374 JVM_END | |
| 2375 | |
| 2376 | |
| 2377 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
| 2378 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
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2379 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2380 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2381 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2382 return method->checked_exceptions_length(); |
| 0 | 2383 JVM_END |
| 2384 | |
| 2385 | |
| 2386 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
| 2387 JVMWrapper("JVM_GetMethodIxByteCode"); | |
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2388 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2389 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2390 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2391 memcpy(code, method->code_base(), method->code_size()); |
| 0 | 2392 JVM_END |
| 2393 | |
| 2394 | |
| 2395 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
| 2396 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
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2397 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2398 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2399 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2400 return method->code_size(); |
| 0 | 2401 JVM_END |
| 2402 | |
| 2403 | |
| 2404 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
| 2405 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
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2406 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2407 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2408 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2409 ExceptionTable extable(method); |
|
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2410 entry->start_pc = extable.start_pc(entry_index); |
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2411 entry->end_pc = extable.end_pc(entry_index); |
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2412 entry->handler_pc = extable.handler_pc(entry_index); |
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2413 entry->catchType = extable.catch_type_index(entry_index); |
| 0 | 2414 JVM_END |
| 2415 | |
| 2416 | |
| 2417 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
| 2418 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
|
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2419 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2420 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2421 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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2422 return method->exception_table_length(); |
| 0 | 2423 JVM_END |
| 2424 | |
| 2425 | |
| 2426 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
| 2427 JVMWrapper("JVM_GetMethodIxModifiers"); | |
|
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|
2428 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2429 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2430 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2431 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
| 0 | 2432 JVM_END |
| 2433 | |
| 2434 | |
| 2435 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
| 2436 JVMWrapper("JVM_GetFieldIxModifiers"); | |
|
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2437 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2438 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2439 return InstanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
| 0 | 2440 JVM_END |
| 2441 | |
| 2442 | |
| 2443 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
| 2444 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
|
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|
2445 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2446 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2447 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2448 return method->max_locals(); |
| 0 | 2449 JVM_END |
| 2450 | |
| 2451 | |
| 2452 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
| 2453 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
|
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|
2454 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2455 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2456 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2457 return method->size_of_parameters(); |
| 0 | 2458 JVM_END |
| 2459 | |
| 2460 | |
| 2461 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
| 2462 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
|
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|
2463 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2464 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2465 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2466 return method->verifier_max_stack(); |
| 0 | 2467 JVM_END |
| 2468 | |
| 2469 | |
| 2470 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
| 2471 JVMWrapper("JVM_IsConstructorIx"); | |
| 2472 ResourceMark rm(THREAD); | |
|
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|
2473 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2474 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2475 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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2476 return method->name() == vmSymbols::object_initializer_name(); |
| 0 | 2477 JVM_END |
| 2478 | |
| 2479 | |
|
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|
2480 JVM_QUICK_ENTRY(jboolean, JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cls, int method_index)) |
|
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|
2481 JVMWrapper("JVM_IsVMGeneratedMethodIx"); |
|
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|
2482 ResourceMark rm(THREAD); |
|
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|
2483 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
|
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|
2484 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2485 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2486 return method->is_overpass(); |
|
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|
2487 JVM_END |
|
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|
2488 |
| 0 | 2489 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) |
| 2490 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
|
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|
2491 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2492 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2493 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2494 return method->name()->as_utf8(); |
| 0 | 2495 JVM_END |
| 2496 | |
| 2497 | |
| 2498 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
| 2499 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
|
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2500 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2501 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2502 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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|
2503 return method->signature()->as_utf8(); |
| 0 | 2504 JVM_END |
| 2505 | |
| 2506 /** | |
| 2507 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
| 2508 * read entries in the constant pool. Since the old verifier always | |
| 2509 * works on a copy of the code, it will not see any rewriting that | |
| 2510 * may possibly occur in the middle of verification. So it is important | |
| 2511 * that nothing it calls tries to use the cpCache instead of the raw | |
| 2512 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
| 2513 */ | |
| 2514 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2515 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
|
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|
2516 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2517 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2518 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2519 switch (cp->tag_at(cp_index).value()) { |
| 2520 case JVM_CONSTANT_Fieldref: | |
| 2521 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
| 2522 default: | |
| 2523 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
| 2524 } | |
| 2525 ShouldNotReachHere(); | |
| 2526 return NULL; | |
| 2527 JVM_END | |
| 2528 | |
| 2529 | |
| 2530 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2531 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
|
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|
2532 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2533 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2534 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2535 switch (cp->tag_at(cp_index).value()) { |
| 2536 case JVM_CONSTANT_InterfaceMethodref: | |
| 2537 case JVM_CONSTANT_Methodref: | |
|
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|
2538 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2539 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
| 2540 default: | |
| 2541 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
| 2542 } | |
| 2543 ShouldNotReachHere(); | |
| 2544 return NULL; | |
| 2545 JVM_END | |
| 2546 | |
| 2547 | |
| 2548 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2549 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
|
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|
2550 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2551 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2552 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2553 switch (cp->tag_at(cp_index).value()) { |
| 2554 case JVM_CONSTANT_InterfaceMethodref: | |
| 2555 case JVM_CONSTANT_Methodref: | |
|
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|
2556 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2557 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
| 2558 default: | |
| 2559 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
| 2560 } | |
| 2561 ShouldNotReachHere(); | |
| 2562 return NULL; | |
| 2563 JVM_END | |
| 2564 | |
| 2565 | |
| 2566 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2567 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
|
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|
2568 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2569 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2570 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2571 switch (cp->tag_at(cp_index).value()) { |
| 2572 case JVM_CONSTANT_Fieldref: | |
| 2573 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
| 2574 default: | |
| 2575 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
| 2576 } | |
| 2577 ShouldNotReachHere(); | |
| 2578 return NULL; | |
| 2579 JVM_END | |
| 2580 | |
| 2581 | |
| 2582 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2583 JVMWrapper("JVM_GetCPClassNameUTF"); | |
|
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|
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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|
2586 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
|
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|
2587 Symbol* classname = cp->klass_name_at(cp_index); |
| 0 | 2588 return classname->as_utf8(); |
| 2589 JVM_END | |
| 2590 | |
| 2591 | |
| 2592 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2593 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
|
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|
2594 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2595 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2596 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2597 switch (cp->tag_at(cp_index).value()) { |
| 2598 case JVM_CONSTANT_Fieldref: { | |
| 2599 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
|
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|
2600 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2601 return classname->as_utf8(); |
| 2602 } | |
| 2603 default: | |
| 2604 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
| 2605 } | |
| 2606 ShouldNotReachHere(); | |
| 2607 return NULL; | |
| 2608 JVM_END | |
| 2609 | |
| 2610 | |
| 2611 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2612 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
|
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|
2613 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2614 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2615 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2616 switch (cp->tag_at(cp_index).value()) { |
| 2617 case JVM_CONSTANT_Methodref: | |
| 2618 case JVM_CONSTANT_InterfaceMethodref: { | |
| 2619 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
|
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|
2620 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2621 return classname->as_utf8(); |
| 2622 } | |
| 2623 default: | |
| 2624 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
| 2625 } | |
| 2626 ShouldNotReachHere(); | |
| 2627 return NULL; | |
| 2628 JVM_END | |
| 2629 | |
| 2630 | |
| 3938 | 2631 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
| 0 | 2632 JVMWrapper("JVM_GetCPFieldModifiers"); |
|
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|
2633 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
|
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|
2634 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
| 0 | 2635 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 2636 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
|
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|
2637 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
|
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|
2638 ConstantPool* cp_called = InstanceKlass::cast(k_called)->constants(); |
| 0 | 2639 switch (cp->tag_at(cp_index).value()) { |
| 2640 case JVM_CONSTANT_Fieldref: { | |
|
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|
2641 Symbol* name = cp->uncached_name_ref_at(cp_index); |
|
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|
2642 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
| 3938 | 2643 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
| 2644 if (fs.name() == name && fs.signature() == signature) { | |
| 2645 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
| 0 | 2646 } |
| 2647 } | |
| 2648 return -1; | |
| 2649 } | |
| 2650 default: | |
| 2651 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
| 2652 } | |
| 2653 ShouldNotReachHere(); | |
| 2654 return 0; | |
| 2655 JVM_END | |
| 2656 | |
| 2657 | |
| 2658 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
| 2659 JVMWrapper("JVM_GetCPMethodModifiers"); | |
|
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6964458: Reimplement class meta-data storage to use native memory
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|
2660 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
|
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|
2661 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
| 0 | 2662 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 2663 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
|
2664 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2665 switch (cp->tag_at(cp_index).value()) { |
| 2666 case JVM_CONSTANT_Methodref: | |
| 2667 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
|
2668 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
|
2669 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
|
6725
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coleenp
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diff
changeset
|
2670 Array<Method*>* methods = InstanceKlass::cast(k_called)->methods(); |
| 0 | 2671 int methods_count = methods->length(); |
| 2672 for (int i = 0; i < methods_count; i++) { | |
|
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6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
2673 Method* method = methods->at(i); |
| 0 | 2674 if (method->name() == name && method->signature() == signature) { |
| 2675 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 2676 } | |
| 2677 } | |
| 2678 return -1; | |
| 2679 } | |
| 2680 default: | |
| 2681 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
| 2682 } | |
| 2683 ShouldNotReachHere(); | |
| 2684 return 0; | |
| 2685 JVM_END | |
| 2686 | |
| 2687 | |
| 2688 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
| 2689 | |
| 2690 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
| 2691 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
| 2692 JVM_END | |
| 2693 | |
| 2694 | |
| 2695 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
| 2696 JVMWrapper("JVM_IsSameClassPackage"); | |
| 2697 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
| 2698 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
|
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|
2699 Klass* klass1 = java_lang_Class::as_Klass(class1_mirror); |
|
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diff
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|
2700 Klass* klass2 = java_lang_Class::as_Klass(class2_mirror); |
| 0 | 2701 return (jboolean) Reflection::is_same_class_package(klass1, klass2); |
| 2702 JVM_END | |
| 2703 | |
| 2704 | |
| 2705 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
| 2706 | |
| 2707 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
| 2708 JVMWrapper2("JVM_Open (%s)", fname); | |
| 2709 | |
| 2710 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2711 int result = os::open(fname, flags, mode); |
| 0 | 2712 if (result >= 0) { |
| 2713 return result; | |
| 2714 } else { | |
| 2715 switch(errno) { | |
| 2716 case EEXIST: | |
| 2717 return JVM_EEXIST; | |
| 2718 default: | |
| 2719 return -1; | |
| 2720 } | |
| 2721 } | |
| 2722 JVM_END | |
| 2723 | |
| 2724 | |
| 2725 JVM_LEAF(jint, JVM_Close(jint fd)) | |
| 2726 JVMWrapper2("JVM_Close (0x%x)", fd); | |
| 2727 //%note jvm_r6 | |
|
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828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2728 return os::close(fd); |
| 0 | 2729 JVM_END |
| 2730 | |
| 2731 | |
| 2732 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
| 2733 JVMWrapper2("JVM_Read (0x%x)", fd); | |
| 2734 | |
| 2735 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2736 return (jint)os::restartable_read(fd, buf, nbytes); |
| 0 | 2737 JVM_END |
| 2738 | |
| 2739 | |
| 2740 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
| 2741 JVMWrapper2("JVM_Write (0x%x)", fd); | |
| 2742 | |
| 2743 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2744 return (jint)os::write(fd, buf, nbytes); |
| 0 | 2745 JVM_END |
| 2746 | |
| 2747 | |
| 2748 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
| 2749 JVMWrapper2("JVM_Available (0x%x)", fd); | |
| 2750 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2751 return os::available(fd, pbytes); |
| 0 | 2752 JVM_END |
| 2753 | |
| 2754 | |
| 2755 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
|
17937
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8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
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17889
diff
changeset
|
2756 JVMWrapper4("JVM_Lseek (0x%x, " INT64_FORMAT ", %d)", fd, (int64_t) offset, whence); |
| 0 | 2757 //%note jvm_r6 |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2758 return os::lseek(fd, offset, whence); |
| 0 | 2759 JVM_END |
| 2760 | |
| 2761 | |
| 2762 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
|
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
2763 JVMWrapper3("JVM_SetLength (0x%x, " INT64_FORMAT ")", fd, (int64_t) length); |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2764 return os::ftruncate(fd, length); |
| 0 | 2765 JVM_END |
| 2766 | |
| 2767 | |
| 2768 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
| 2769 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
| 2770 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2771 return os::fsync(fd); |
| 0 | 2772 JVM_END |
| 2773 | |
| 2774 | |
| 2775 // Printing support ////////////////////////////////////////////////// | |
| 2776 extern "C" { | |
| 2777 | |
|
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
2778 ATTRIBUTE_PRINTF(3, 0) |
| 0 | 2779 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { |
| 2780 // see bug 4399518, 4417214 | |
| 2781 if ((intptr_t)count <= 0) return -1; | |
| 2782 return vsnprintf(str, count, fmt, args); | |
| 2783 } | |
| 2784 | |
|
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
2785 ATTRIBUTE_PRINTF(3, 0) |
| 0 | 2786 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { |
| 2787 va_list args; | |
| 2788 int len; | |
| 2789 va_start(args, fmt); | |
| 2790 len = jio_vsnprintf(str, count, fmt, args); | |
| 2791 va_end(args); | |
| 2792 return len; | |
| 2793 } | |
| 2794 | |
|
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
2795 ATTRIBUTE_PRINTF(2,3) |
| 0 | 2796 int jio_fprintf(FILE* f, const char *fmt, ...) { |
| 2797 int len; | |
| 2798 va_list args; | |
| 2799 va_start(args, fmt); | |
| 2800 len = jio_vfprintf(f, fmt, args); | |
| 2801 va_end(args); | |
| 2802 return len; | |
| 2803 } | |
| 2804 | |
|
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
2805 ATTRIBUTE_PRINTF(2, 0) |
| 0 | 2806 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { |
| 2807 if (Arguments::vfprintf_hook() != NULL) { | |
| 2808 return Arguments::vfprintf_hook()(f, fmt, args); | |
| 2809 } else { | |
| 2810 return vfprintf(f, fmt, args); | |
| 2811 } | |
| 2812 } | |
| 2813 | |
|
17937
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8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
2814 ATTRIBUTE_PRINTF(1, 2) |
| 2191 | 2815 JNIEXPORT int jio_printf(const char *fmt, ...) { |
| 0 | 2816 int len; |
| 2817 va_list args; | |
| 2818 va_start(args, fmt); | |
| 2819 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
| 2820 va_end(args); | |
| 2821 return len; | |
| 2822 } | |
| 2823 | |
| 2824 | |
| 2825 // HotSpot specific jio method | |
| 2826 void jio_print(const char* s) { | |
| 2827 // Try to make this function as atomic as possible. | |
| 2828 if (Arguments::vfprintf_hook() != NULL) { | |
| 2829 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
| 2830 } else { | |
|
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
431
diff
changeset
|
2831 // 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
|
2832 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
| 0 | 2833 } |
| 2834 } | |
| 2835 | |
| 2836 } // Extern C | |
| 2837 | |
| 2838 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
| 2839 | |
| 2840 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
| 2841 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
| 2842 // OSThread objects. The exception to this rule is when the target object is the thread | |
| 2843 // doing the operation, in which case we know that the thread won't exit until the | |
| 2844 // operation is done (all exits being voluntary). There are a few cases where it is | |
| 2845 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
| 2846 // you are alive. While these can still happen, they are not subject to deadlocks if | |
| 2847 // the lock is held while the operation occurs (this is not the case for suspend, for | |
| 2848 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
| 2849 // implementation is local to this file, we always lock Threads_lock for that one. | |
| 2850 | |
| 2851 static void thread_entry(JavaThread* thread, TRAPS) { | |
| 2852 HandleMark hm(THREAD); | |
| 2853 Handle obj(THREAD, thread->threadObj()); | |
| 2854 JavaValue result(T_VOID); | |
| 2855 JavaCalls::call_virtual(&result, | |
| 2856 obj, | |
| 1142 | 2857 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
2858 vmSymbols::run_method_name(), |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
2859 vmSymbols::void_method_signature(), |
| 0 | 2860 THREAD); |
| 2861 } | |
| 2862 | |
| 2863 | |
| 2864 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
| 2865 JVMWrapper("JVM_StartThread"); | |
| 2866 JavaThread *native_thread = NULL; | |
| 2867 | |
| 2868 // We cannot hold the Threads_lock when we throw an exception, | |
| 2869 // due to rank ordering issues. Example: we might need to grab the | |
| 2870 // Heap_lock while we construct the exception. | |
| 2871 bool throw_illegal_thread_state = false; | |
| 2872 | |
| 2873 // We must release the Threads_lock before we can post a jvmti event | |
| 2874 // in Thread::start. | |
| 2875 { | |
| 2876 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
| 2877 // we operate. | |
| 2878 MutexLocker mu(Threads_lock); | |
| 2879 | |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2880 // 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
|
2881 // 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
|
2882 // 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
|
2883 // 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
|
2884 // (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
|
2885 // 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
|
2886 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
|
2887 throw_illegal_thread_state = true; |
| 0 | 2888 } else { |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2889 // 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
|
2890 // 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
|
2891 |
| 0 | 2892 jlong size = |
| 2893 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
| 2894 // Allocate the C++ Thread structure and create the native thread. The | |
| 2895 // stack size retrieved from java is signed, but the constructor takes | |
| 2896 // size_t (an unsigned type), so avoid passing negative values which would | |
| 2897 // result in really large stacks. | |
| 2898 size_t sz = size > 0 ? (size_t) size : 0; | |
| 2899 native_thread = new JavaThread(&thread_entry, sz); | |
| 2900 | |
| 2901 // At this point it may be possible that no osthread was created for the | |
| 2902 // JavaThread due to lack of memory. Check for this situation and throw | |
| 2903 // an exception if necessary. Eventually we may want to change this so | |
| 2904 // that we only grab the lock if the thread was created successfully - | |
| 2905 // then we can also do this check and throw the exception in the | |
| 2906 // JavaThread constructor. | |
| 2907 if (native_thread->osthread() != NULL) { | |
| 2908 // Note: the current thread is not being used within "prepare". | |
| 2909 native_thread->prepare(jthread); | |
| 2910 } | |
| 2911 } | |
| 2912 } | |
| 2913 | |
| 2914 if (throw_illegal_thread_state) { | |
| 2915 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
| 2916 } | |
| 2917 | |
| 2918 assert(native_thread != NULL, "Starting null thread?"); | |
| 2919 | |
| 2920 if (native_thread->osthread() == NULL) { | |
| 2921 // No one should hold a reference to the 'native_thread'. | |
| 2922 delete native_thread; | |
| 2923 if (JvmtiExport::should_post_resource_exhausted()) { | |
| 2924 JvmtiExport::post_resource_exhausted( | |
| 2925 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
| 2926 "unable to create new native thread"); | |
| 2927 } | |
| 2928 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
| 2929 "unable to create new native thread"); | |
| 2930 } | |
| 2931 | |
| 2932 Thread::start(native_thread); | |
| 2933 | |
| 2934 JVM_END | |
| 2935 | |
| 2936 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
| 2937 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
| 2938 // 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
|
2939 // same thread as the sender, no safepoint is needed. |
| 0 | 2940 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
| 2941 JVMWrapper("JVM_StopThread"); | |
| 2942 | |
| 2943 oop java_throwable = JNIHandles::resolve(throwable); | |
| 2944 if (java_throwable == NULL) { | |
| 2945 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 2946 } | |
| 2947 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2948 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
|
2949 Events::log_exception(JavaThread::current(), |
|
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4717
diff
changeset
|
2950 "JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", |
|
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
2951 p2i(receiver), p2i((address)java_thread), p2i(throwable)); |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2952 // First check if thread is alive |
| 0 | 2953 if (receiver != NULL) { |
| 2954 // Check if exception is getting thrown at self (use oop equality, since the | |
| 2955 // target object might exit) | |
| 2956 if (java_thread == thread->threadObj()) { | |
| 2957 THROW_OOP(java_throwable); | |
| 2958 } else { | |
| 2959 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
| 2960 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
| 2961 } | |
| 2962 } | |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2963 else { |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2964 // Either: |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2965 // - 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
|
2966 // - target thread already terminated |
|
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diff
changeset
|
2967 // We could read the threadStatus to determine which case it is |
|
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diff
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|
2968 // but that is overkill as it doesn't matter. We must set the |
|
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diff
changeset
|
2969 // stillborn flag for the first case, and if the thread has already |
|
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diff
changeset
|
2970 // exited setting this flag has no affect |
|
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diff
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|
2971 java_lang_Thread::set_stillborn(java_thread); |
|
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|
2972 } |
| 0 | 2973 JVM_END |
| 2974 | |
| 2975 | |
| 2976 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
| 2977 JVMWrapper("JVM_IsThreadAlive"); | |
| 2978 | |
| 2979 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
| 2980 return java_lang_Thread::is_alive(thread_oop); | |
| 2981 JVM_END | |
| 2982 | |
| 2983 | |
| 2984 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
| 2985 JVMWrapper("JVM_SuspendThread"); | |
| 2986 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2987 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
| 2988 | |
| 2989 if (receiver != NULL) { | |
| 2990 // thread has run and has not exited (still on threads list) | |
| 2991 | |
| 2992 { | |
| 2993 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
| 2994 if (receiver->is_external_suspend()) { | |
| 2995 // Don't allow nested external suspend requests. We can't return | |
| 2996 // an error from this interface so just ignore the problem. | |
| 2997 return; | |
| 2998 } | |
| 2999 if (receiver->is_exiting()) { // thread is in the process of exiting | |
| 3000 return; | |
| 3001 } | |
| 3002 receiver->set_external_suspend(); | |
| 3003 } | |
| 3004 | |
| 3005 // java_suspend() will catch threads in the process of exiting | |
| 3006 // and will ignore them. | |
| 3007 receiver->java_suspend(); | |
| 3008 | |
| 3009 // It would be nice to have the following assertion in all the | |
| 3010 // time, but it is possible for a racing resume request to have | |
| 3011 // resumed this thread right after we suspended it. Temporarily | |
| 3012 // enable this assertion if you are chasing a different kind of | |
| 3013 // bug. | |
| 3014 // | |
| 3015 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
| 3016 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
| 3017 } | |
| 3018 JVM_END | |
| 3019 | |
| 3020 | |
| 3021 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
| 3022 JVMWrapper("JVM_ResumeThread"); | |
| 3023 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
| 3024 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
| 3025 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
| 3026 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
| 3027 // looks at it. | |
| 3028 MutexLocker ml(Threads_lock); | |
| 3029 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3030 if (thr != NULL) { | |
| 3031 // the thread has run and is not in the process of exiting | |
| 3032 thr->java_resume(); | |
| 3033 } | |
| 3034 JVM_END | |
| 3035 | |
| 3036 | |
| 3037 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
| 3038 JVMWrapper("JVM_SetThreadPriority"); | |
| 3039 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3040 MutexLocker ml(Threads_lock); | |
| 3041 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3042 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
| 3043 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 3044 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
| 3045 Thread::set_priority(thr, (ThreadPriority)prio); | |
| 3046 } | |
| 3047 JVM_END | |
| 3048 | |
| 3049 | |
| 3050 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
| 3051 JVMWrapper("JVM_Yield"); | |
| 3052 if (os::dont_yield()) return; | |
| 4006 | 3053 #ifndef USDT2 |
|
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|
3054 HS_DTRACE_PROBE0(hotspot, thread__yield); |
| 4006 | 3055 #else /* USDT2 */ |
| 3056 HOTSPOT_THREAD_YIELD(); | |
| 3057 #endif /* USDT2 */ | |
| 0 | 3058 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
| 3059 // Critical for similar threading behaviour | |
| 3060 if (ConvertYieldToSleep) { | |
| 3061 os::sleep(thread, MinSleepInterval, false); | |
| 3062 } else { | |
| 3063 os::yield(); | |
| 3064 } | |
| 3065 JVM_END | |
| 3066 | |
| 3067 | |
| 3068 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
| 3069 JVMWrapper("JVM_Sleep"); | |
| 3070 | |
| 3071 if (millis < 0) { | |
| 3072 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
| 3073 } | |
| 3074 | |
| 3075 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
| 3076 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 3077 } | |
| 3078 | |
| 3079 // Save current thread state and restore it at the end of this block. | |
| 3080 // And set new thread state to SLEEPING. | |
| 3081 JavaThreadSleepState jtss(thread); | |
| 3082 | |
| 4006 | 3083 #ifndef USDT2 |
|
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diff
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|
3084 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); |
| 4006 | 3085 #else /* USDT2 */ |
| 3086 HOTSPOT_THREAD_SLEEP_BEGIN( | |
| 3087 millis); | |
| 3088 #endif /* USDT2 */ | |
|
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|
3089 |
| 10405 | 3090 EventThreadSleep event; |
| 3091 | |
| 0 | 3092 if (millis == 0) { |
| 3093 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
| 3094 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
| 3095 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
| 3096 // for SOLARIS | |
| 3097 if (ConvertSleepToYield) { | |
| 3098 os::yield(); | |
| 3099 } else { | |
| 3100 ThreadState old_state = thread->osthread()->get_state(); | |
| 3101 thread->osthread()->set_state(SLEEPING); | |
| 3102 os::sleep(thread, MinSleepInterval, false); | |
| 3103 thread->osthread()->set_state(old_state); | |
| 3104 } | |
| 3105 } else { | |
| 3106 ThreadState old_state = thread->osthread()->get_state(); | |
| 3107 thread->osthread()->set_state(SLEEPING); | |
| 3108 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
| 3109 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
| 3110 // us while we were sleeping. We do not overwrite those. | |
| 3111 if (!HAS_PENDING_EXCEPTION) { | |
| 10405 | 3112 if (event.should_commit()) { |
| 3113 event.set_time(millis); | |
| 3114 event.commit(); | |
| 3115 } | |
| 4006 | 3116 #ifndef USDT2 |
|
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diff
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|
3117 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); |
| 4006 | 3118 #else /* USDT2 */ |
| 3119 HOTSPOT_THREAD_SLEEP_END( | |
| 3120 1); | |
| 3121 #endif /* USDT2 */ | |
| 0 | 3122 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
| 3123 // to properly restore the thread state. That's likely wrong. | |
| 3124 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 3125 } | |
| 3126 } | |
| 3127 thread->osthread()->set_state(old_state); | |
| 3128 } | |
| 10405 | 3129 if (event.should_commit()) { |
| 3130 event.set_time(millis); | |
| 3131 event.commit(); | |
| 3132 } | |
| 4006 | 3133 #ifndef USDT2 |
|
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diff
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|
3134 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); |
| 4006 | 3135 #else /* USDT2 */ |
| 3136 HOTSPOT_THREAD_SLEEP_END( | |
| 3137 0); | |
| 3138 #endif /* USDT2 */ | |
| 0 | 3139 JVM_END |
| 3140 | |
| 3141 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
| 3142 JVMWrapper("JVM_CurrentThread"); | |
| 3143 oop jthread = thread->threadObj(); | |
| 3144 assert (thread != NULL, "no current thread!"); | |
| 3145 return JNIHandles::make_local(env, jthread); | |
| 3146 JVM_END | |
| 3147 | |
| 3148 | |
| 3149 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
| 3150 JVMWrapper("JVM_CountStackFrames"); | |
| 3151 | |
| 3152 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3153 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3154 bool throw_illegal_thread_state = false; | |
| 3155 int count = 0; | |
| 3156 | |
| 3157 { | |
| 3158 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 3159 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 3160 // acquire of the lock | |
| 3161 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3162 | |
| 3163 if (thr == NULL) { | |
| 3164 // do nothing | |
| 3165 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
| 3166 // Check whether this java thread has been suspended already. If not, throws | |
| 3167 // IllegalThreadStateException. We defer to throw that exception until | |
| 3168 // Threads_lock is released since loading exception class has to leave VM. | |
| 3169 // The correct way to test a thread is actually suspended is | |
| 3170 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
| 3171 // the Threads_lock. The above tests are sufficient for our purposes | |
| 3172 // provided the walkability of the stack is stable - which it isn't | |
| 3173 // 100% but close enough for most practical purposes. | |
| 3174 throw_illegal_thread_state = true; | |
| 3175 } else { | |
| 3176 // Count all java activation, i.e., number of vframes | |
| 3177 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
| 3178 // Native frames are not counted | |
| 3179 if (!vfst.method()->is_native()) count++; | |
| 3180 } | |
| 3181 } | |
| 3182 } | |
| 3183 | |
| 3184 if (throw_illegal_thread_state) { | |
| 3185 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
| 3186 "this thread is not suspended"); | |
| 3187 } | |
| 3188 return count; | |
| 3189 JVM_END | |
| 3190 | |
| 3191 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
| 3192 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
| 3193 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
| 3194 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
| 3195 // outside the critical section. Threads_lock is hot so we want to minimize | |
| 3196 // the hold-time. A cleaner interface would be to decompose interrupt into | |
| 3197 // two steps. The 1st phase, performed under Threads_lock, would return | |
| 3198 // a closure that'd be invoked after Threads_lock was dropped. | |
| 3199 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
| 3200 // admit spurious wakeups. | |
| 3201 | |
| 3202 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
| 3203 JVMWrapper("JVM_Interrupt"); | |
| 3204 | |
| 3205 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3206 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3207 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 3208 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 3209 // acquire of the lock | |
| 3210 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3211 if (thr != NULL) { | |
| 3212 Thread::interrupt(thr); | |
| 3213 } | |
| 3214 JVM_END | |
| 3215 | |
| 3216 | |
| 3217 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
| 3218 JVMWrapper("JVM_IsInterrupted"); | |
| 3219 | |
| 3220 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3221 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3222 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 3223 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 3224 // acquire of the lock | |
| 3225 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3226 if (thr == NULL) { | |
| 3227 return JNI_FALSE; | |
| 3228 } else { | |
| 3229 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
| 3230 } | |
| 3231 JVM_END | |
| 3232 | |
| 3233 | |
| 3234 // Return true iff the current thread has locked the object passed in | |
| 3235 | |
| 3236 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
| 3237 JVMWrapper("JVM_HoldsLock"); | |
| 3238 assert(THREAD->is_Java_thread(), "sanity check"); | |
| 3239 if (obj == NULL) { | |
| 3240 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
| 3241 } | |
| 3242 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
| 3243 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
| 3244 JVM_END | |
| 3245 | |
| 3246 | |
| 3247 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
| 3248 JVMWrapper("JVM_DumpAllStacks"); | |
| 3249 VM_PrintThreads op; | |
| 3250 VMThread::execute(&op); | |
| 3251 if (JvmtiExport::should_post_data_dump()) { | |
| 3252 JvmtiExport::post_data_dump(); | |
| 3253 } | |
| 3254 JVM_END | |
| 3255 | |
| 4006 | 3256 JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name)) |
| 3257 JVMWrapper("JVM_SetNativeThreadName"); | |
| 3258 ResourceMark rm(THREAD); | |
| 3259 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3260 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 3261 // Thread naming only supported for the current thread, doesn't work for | |
| 3262 // target threads. | |
| 3263 if (Thread::current() == thr && !thr->has_attached_via_jni()) { | |
| 3264 // we don't set the name of an attached thread to avoid stepping | |
| 3265 // on other programs | |
| 3266 const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
| 3267 os::set_native_thread_name(thread_name); | |
| 3268 } | |
| 3269 JVM_END | |
| 0 | 3270 |
| 3271 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
| 3272 | |
| 3273 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
| 3274 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
| 3275 if (jthread->privileged_stack_top() == NULL) return false; | |
| 3276 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
| 3277 oop loader = jthread->privileged_stack_top()->class_loader(); | |
| 3278 if (loader == NULL) return true; | |
| 3279 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
| 3280 if (trusted) return true; | |
| 3281 } | |
| 3282 return false; | |
| 3283 } | |
| 3284 | |
| 3285 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
| 3286 JVMWrapper("JVM_CurrentLoadedClass"); | |
| 3287 ResourceMark rm(THREAD); | |
| 3288 | |
| 3289 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3290 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3291 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3292 if (trusted) return NULL; | |
| 3293 | |
|
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6271
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|
3294 Method* m = vfst.method(); |
| 0 | 3295 if (!m->is_native()) { |
|
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diff
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|
3296 InstanceKlass* holder = m->method_holder(); |
|
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|
3297 oop loader = holder->class_loader(); |
| 0 | 3298 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
|
6940
18fb7da42534
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diff
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|
3299 return (jclass) JNIHandles::make_local(env, holder->java_mirror()); |
| 0 | 3300 } |
| 3301 } | |
| 3302 } | |
| 3303 return NULL; | |
| 3304 JVM_END | |
| 3305 | |
| 3306 | |
| 3307 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
| 3308 JVMWrapper("JVM_CurrentClassLoader"); | |
| 3309 ResourceMark rm(THREAD); | |
| 3310 | |
| 3311 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3312 | |
| 3313 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3314 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3315 if (trusted) return NULL; | |
| 3316 | |
|
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|
3317 Method* m = vfst.method(); |
| 0 | 3318 if (!m->is_native()) { |
|
6940
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diff
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|
3319 InstanceKlass* holder = m->method_holder(); |
| 0 | 3320 assert(holder->is_klass(), "just checking"); |
|
6940
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diff
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|
3321 oop loader = holder->class_loader(); |
| 0 | 3322 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
| 3323 return JNIHandles::make_local(env, loader); | |
| 3324 } | |
| 3325 } | |
| 3326 } | |
| 3327 return NULL; | |
| 3328 JVM_END | |
| 3329 | |
| 3330 | |
| 3331 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
| 3332 JVMWrapper("JVM_GetClassContext"); | |
| 3333 ResourceMark rm(THREAD); | |
| 3334 JvmtiVMObjectAllocEventCollector oam; | |
|
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|
3335 vframeStream vfst(thread); |
|
16885e702c88
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|
3336 |
|
16885e702c88
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|
3337 if (SystemDictionary::reflect_CallerSensitive_klass() != NULL) { |
|
16885e702c88
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diff
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|
3338 // This must only be called from SecurityManager.getClassContext |
|
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|
3339 Method* m = vfst.method(); |
|
16885e702c88
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diff
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|
3340 if (!(m->method_holder() == SystemDictionary::SecurityManager_klass() && |
|
16885e702c88
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8031
diff
changeset
|
3341 m->name() == vmSymbols::getClassContext_name() && |
|
16885e702c88
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8031
diff
changeset
|
3342 m->signature() == vmSymbols::void_class_array_signature())) { |
|
16885e702c88
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8031
diff
changeset
|
3343 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetClassContext must only be called from SecurityManager.getClassContext"); |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
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|
3344 } |
|
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|
3345 } |
|
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diff
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|
3346 |
|
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diff
changeset
|
3347 // Collect method holders |
|
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diff
changeset
|
3348 GrowableArray<KlassHandle>* klass_array = new GrowableArray<KlassHandle>(); |
|
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|
3349 for (; !vfst.at_end(); vfst.security_next()) { |
|
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diff
changeset
|
3350 Method* m = vfst.method(); |
| 0 | 3351 // Native frames are not returned |
|
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|
3352 if (!m->is_ignored_by_security_stack_walk() && !m->is_native()) { |
|
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changeset
|
3353 Klass* holder = m->method_holder(); |
| 0 | 3354 assert(holder->is_klass(), "just checking"); |
|
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changeset
|
3355 klass_array->append(holder); |
| 0 | 3356 } |
| 3357 } | |
| 3358 | |
| 3359 // Create result array of type [Ljava/lang/Class; | |
|
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diff
changeset
|
3360 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), klass_array->length(), CHECK_NULL); |
| 0 | 3361 // Fill in mirrors corresponding to method holders |
|
11001
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diff
changeset
|
3362 for (int i = 0; i < klass_array->length(); i++) { |
|
c52abc8a0b08
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diff
changeset
|
3363 result->obj_at_put(i, klass_array->at(i)->java_mirror()); |
| 0 | 3364 } |
| 3365 | |
| 3366 return (jobjectArray) JNIHandles::make_local(env, result); | |
| 3367 JVM_END | |
| 3368 | |
| 3369 | |
| 3370 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
| 3371 JVMWrapper("JVM_ClassDepth"); | |
| 3372 ResourceMark rm(THREAD); | |
| 3373 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 3374 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
| 3375 | |
| 3376 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
|
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3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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diff
changeset
|
3377 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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diff
changeset
|
3378 if (class_name_sym == NULL) { |
| 0 | 3379 return -1; |
| 3380 } | |
| 3381 | |
| 3382 int depth = 0; | |
| 3383 | |
| 3384 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3385 if (!vfst.method()->is_native()) { | |
|
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
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6831
diff
changeset
|
3386 InstanceKlass* holder = vfst.method()->method_holder(); |
| 0 | 3387 assert(holder->is_klass(), "just checking"); |
|
6940
18fb7da42534
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diff
changeset
|
3388 if (holder->name() == class_name_sym) { |
| 0 | 3389 return depth; |
| 3390 } | |
| 3391 depth++; | |
| 3392 } | |
| 3393 } | |
| 3394 return -1; | |
| 3395 JVM_END | |
| 3396 | |
| 3397 | |
| 3398 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
| 3399 JVMWrapper("JVM_ClassLoaderDepth"); | |
| 3400 ResourceMark rm(THREAD); | |
| 3401 int depth = 0; | |
| 3402 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3403 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
| 3404 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3405 if (trusted) return -1; | |
| 3406 | |
|
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da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3407 Method* m = vfst.method(); |
| 0 | 3408 if (!m->is_native()) { |
|
6940
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8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
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diff
changeset
|
3409 InstanceKlass* holder = m->method_holder(); |
| 0 | 3410 assert(holder->is_klass(), "just checking"); |
|
6940
18fb7da42534
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changeset
|
3411 oop loader = holder->class_loader(); |
| 0 | 3412 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
| 3413 return depth; | |
| 3414 } | |
| 3415 depth++; | |
| 3416 } | |
| 3417 } | |
| 3418 return -1; | |
| 3419 JVM_END | |
| 3420 | |
| 3421 | |
| 3422 // java.lang.Package //////////////////////////////////////////////////////////////// | |
| 3423 | |
| 3424 | |
| 3425 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
| 3426 JVMWrapper("JVM_GetSystemPackage"); | |
| 3427 ResourceMark rm(THREAD); | |
| 3428 JvmtiVMObjectAllocEventCollector oam; | |
| 3429 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
| 3430 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
| 3431 return (jstring) JNIHandles::make_local(result); | |
| 3432 JVM_END | |
| 3433 | |
| 3434 | |
| 3435 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
| 3436 JVMWrapper("JVM_GetSystemPackages"); | |
| 3437 JvmtiVMObjectAllocEventCollector oam; | |
| 3438 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
| 3439 return (jobjectArray) JNIHandles::make_local(result); | |
| 3440 JVM_END | |
| 3441 | |
| 3442 | |
| 3443 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
| 3444 | |
|
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|
3445 bool force_verify_field_access(Klass* current_class, Klass* field_class, AccessFlags access, bool classloader_only) { |
| 0 | 3446 if (current_class == NULL) { |
| 3447 return true; | |
| 3448 } | |
| 3449 if ((current_class == field_class) || access.is_public()) { | |
| 3450 return true; | |
| 3451 } | |
| 3452 | |
| 3453 if (access.is_protected()) { | |
| 3454 // See if current_class is a subclass of field_class | |
| 6983 | 3455 if (current_class->is_subclass_of(field_class)) { |
| 0 | 3456 return true; |
| 3457 } | |
| 3458 } | |
| 3459 | |
|
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da91efe96a93
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diff
changeset
|
3460 return (!access.is_private() && InstanceKlass::cast(current_class)->is_same_class_package(field_class)); |
| 0 | 3461 } |
| 3462 | |
| 3463 | |
| 3464 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
| 3465 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
| 3466 JVMWrapper("JVM_AllocateNewObject"); | |
| 3467 JvmtiVMObjectAllocEventCollector oam; | |
| 3468 // Receiver is not used | |
| 3469 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
| 3470 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
| 3471 | |
| 3472 // Cannot instantiate primitive types | |
| 3473 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
| 3474 ResourceMark rm(THREAD); | |
| 3475 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3476 } | |
| 3477 | |
| 3478 // Arrays not allowed here, must use JVM_AllocateNewArray | |
| 6983 | 3479 if (java_lang_Class::as_Klass(curr_mirror)->oop_is_array() || |
| 3480 java_lang_Class::as_Klass(init_mirror)->oop_is_array()) { | |
| 0 | 3481 ResourceMark rm(THREAD); |
| 3482 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3483 } | |
| 3484 | |
|
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6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3485 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_Klass(curr_mirror)); |
|
da91efe96a93
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diff
changeset
|
3486 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_Klass(init_mirror)); |
| 0 | 3487 |
| 3488 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
| 3489 | |
| 3490 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
| 3491 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
| 3492 | |
| 3493 // Make sure klass is initialized, since we are about to instantiate one of them. | |
| 3494 curr_klass->initialize(CHECK_NULL); | |
| 3495 | |
| 3496 methodHandle m (THREAD, | |
| 3497 init_klass->find_method(vmSymbols::object_initializer_name(), | |
| 3498 vmSymbols::void_method_signature())); | |
| 3499 if (m.is_null()) { | |
| 3500 ResourceMark rm(THREAD); | |
| 3501 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
| 6983 | 3502 Method::name_and_sig_as_C_string(init_klass(), |
| 0 | 3503 vmSymbols::object_initializer_name(), |
| 3504 vmSymbols::void_method_signature())); | |
| 3505 } | |
| 3506 | |
| 3507 if (curr_klass == init_klass && !m->is_public()) { | |
| 3508 // Calling the constructor for class 'curr_klass'. | |
| 3509 // Only allow calls to a public no-arg constructor. | |
| 3510 // This path corresponds to creating an Externalizable object. | |
| 3511 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3512 } | |
| 3513 | |
| 3514 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
| 3515 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
| 3516 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3517 } | |
| 3518 | |
| 3519 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
| 3520 // Call constructor m. This might call a constructor higher up in the hierachy | |
| 3521 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
| 3522 | |
| 3523 return JNIHandles::make_local(obj()); | |
| 3524 JVM_END | |
| 3525 | |
| 3526 | |
| 3527 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
| 3528 JVMWrapper("JVM_AllocateNewArray"); | |
| 3529 JvmtiVMObjectAllocEventCollector oam; | |
| 3530 oop mirror = JNIHandles::resolve_non_null(currClass); | |
| 3531 | |
| 3532 if (java_lang_Class::is_primitive(mirror)) { | |
| 3533 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3534 } | |
|
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coleenp
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6271
diff
changeset
|
3535 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 3536 oop result; |
| 3537 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6271
diff
changeset
|
3538 if (k->oop_is_typeArray()) { |
| 0 | 3539 // typeArray |
|
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6725
diff
changeset
|
3540 result = TypeArrayKlass::cast(k)->allocate(length, CHECK_NULL); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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diff
changeset
|
3541 } else if (k->oop_is_objArray()) { |
| 0 | 3542 // objArray |
|
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6725
diff
changeset
|
3543 ObjArrayKlass* oak = ObjArrayKlass::cast(k); |
| 0 | 3544 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) |
| 3545 result = oak->allocate(length, CHECK_NULL); | |
| 3546 } else { | |
| 3547 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3548 } | |
| 3549 return JNIHandles::make_local(env, result); | |
| 3550 JVM_END | |
| 3551 | |
| 3552 | |
| 3553 // Return the first non-null class loader up the execution stack, or null | |
| 3554 // if only code from the null class loader is on the stack. | |
| 3555 | |
| 3556 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
| 3557 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3558 // UseNewReflection | |
| 3559 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
|
3560 oop loader = vfst.method()->method_holder()->class_loader(); |
| 0 | 3561 if (loader != NULL) { |
| 3562 return JNIHandles::make_local(env, loader); | |
| 3563 } | |
| 3564 } | |
| 3565 return NULL; | |
| 3566 JVM_END | |
| 3567 | |
| 3568 | |
| 3569 // Load a class relative to the most recent class on the stack with a non-null | |
| 3570 // classloader. | |
| 3571 // This function has been deprecated and should not be considered part of the | |
| 3572 // specified JVM interface. | |
| 3573 | |
| 3574 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
| 3575 jclass currClass, jstring currClassName)) | |
| 3576 JVMWrapper("JVM_LoadClass0"); | |
| 3577 // Receiver is not used | |
| 3578 ResourceMark rm(THREAD); | |
| 3579 | |
| 3580 // Class name argument is not guaranteed to be in internal format | |
| 3581 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
| 3582 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
| 3583 | |
| 3584 const char* str = java_lang_String::as_utf8_string(string()); | |
| 3585 | |
|
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2162
diff
changeset
|
3586 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
| 0 | 3587 // It's impossible to create this class; the name cannot fit |
| 3588 // into the constant pool. | |
| 3589 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
| 3590 } | |
| 3591 | |
|
2177
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2162
diff
changeset
|
3592 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
| 0 | 3593 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
| 3594 // Find the most recent class on the stack with a non-null classloader | |
| 3595 oop loader = NULL; | |
| 3596 oop protection_domain = NULL; | |
| 3597 if (curr_klass.is_null()) { | |
| 3598 for (vframeStream vfst(thread); | |
| 3599 !vfst.at_end() && loader == NULL; | |
| 3600 vfst.next()) { | |
| 3601 if (!vfst.method()->is_native()) { | |
|
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
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6831
diff
changeset
|
3602 InstanceKlass* holder = vfst.method()->method_holder(); |
|
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
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6831
diff
changeset
|
3603 loader = holder->class_loader(); |
|
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
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6831
diff
changeset
|
3604 protection_domain = holder->protection_domain(); |
| 0 | 3605 } |
| 3606 } | |
| 3607 } else { | |
|
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6271
diff
changeset
|
3608 Klass* curr_klass_oop = java_lang_Class::as_Klass(curr_klass()); |
|
da91efe96a93
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6271
diff
changeset
|
3609 loader = InstanceKlass::cast(curr_klass_oop)->class_loader(); |
|
da91efe96a93
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6271
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changeset
|
3610 protection_domain = InstanceKlass::cast(curr_klass_oop)->protection_domain(); |
| 0 | 3611 } |
| 3612 Handle h_loader(THREAD, loader); | |
| 3613 Handle h_prot (THREAD, protection_domain); | |
|
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3614 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
|
3615 false, thread); |
|
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
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579
diff
changeset
|
3616 if (TraceClassResolution && result != NULL) { |
|
6725
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6271
diff
changeset
|
3617 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
|
3618 } |
|
715dceaa89b7
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acorn
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579
diff
changeset
|
3619 return result; |
| 0 | 3620 JVM_END |
| 3621 | |
| 3622 | |
| 3623 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
| 3624 | |
| 3625 | |
| 3626 // resolve array handle and check arguments | |
| 3627 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
| 3628 if (arr == NULL) { | |
| 3629 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 3630 } | |
| 3631 oop a = JNIHandles::resolve_non_null(arr); | |
|
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changeset
|
3632 if (!a->is_array() || (type_array_only && !a->is_typeArray())) { |
| 0 | 3633 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); |
| 3634 } | |
| 3635 return arrayOop(a); | |
| 3636 } | |
| 3637 | |
| 3638 | |
| 3639 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
| 3640 JVMWrapper("JVM_GetArrayLength"); | |
| 3641 arrayOop a = check_array(env, arr, false, CHECK_0); | |
| 3642 return a->length(); | |
| 3643 JVM_END | |
| 3644 | |
| 3645 | |
| 3646 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
| 3647 JVMWrapper("JVM_Array_Get"); | |
| 3648 JvmtiVMObjectAllocEventCollector oam; | |
| 3649 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
| 3650 jvalue value; | |
| 3651 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
| 3652 oop box = Reflection::box(&value, type, CHECK_NULL); | |
| 3653 return JNIHandles::make_local(env, box); | |
| 3654 JVM_END | |
| 3655 | |
| 3656 | |
| 3657 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
| 3658 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
| 3659 jvalue value; | |
| 3660 value.i = 0; // to initialize value before getting used in CHECK | |
| 3661 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
| 3662 assert(a->is_typeArray(), "just checking"); | |
| 3663 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
| 3664 BasicType wide_type = (BasicType) wCode; | |
| 3665 if (type != wide_type) { | |
| 3666 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
| 3667 } | |
| 3668 return value; | |
| 3669 JVM_END | |
| 3670 | |
| 3671 | |
| 3672 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
| 3673 JVMWrapper("JVM_SetArrayElement"); | |
| 3674 arrayOop a = check_array(env, arr, false, CHECK); | |
| 3675 oop box = JNIHandles::resolve(val); | |
| 3676 jvalue value; | |
| 3677 value.i = 0; // to initialize value before getting used in CHECK | |
| 3678 BasicType value_type; | |
| 3679 if (a->is_objArray()) { | |
| 3680 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
| 3681 value_type = Reflection::unbox_for_regular_object(box, &value); | |
| 3682 } else { | |
| 3683 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
| 3684 } | |
| 3685 Reflection::array_set(&value, a, index, value_type, CHECK); | |
| 3686 JVM_END | |
| 3687 | |
| 3688 | |
| 3689 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
| 3690 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
| 3691 arrayOop a = check_array(env, arr, true, CHECK); | |
| 3692 assert(a->is_typeArray(), "just checking"); | |
| 3693 BasicType value_type = (BasicType) vCode; | |
| 3694 Reflection::array_set(&v, a, index, value_type, CHECK); | |
| 3695 JVM_END | |
| 3696 | |
| 3697 | |
| 3698 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
| 3699 JVMWrapper("JVM_NewArray"); | |
| 3700 JvmtiVMObjectAllocEventCollector oam; | |
| 3701 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3702 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
| 3703 return JNIHandles::make_local(env, result); | |
| 3704 JVM_END | |
| 3705 | |
| 3706 | |
| 3707 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
| 3708 JVMWrapper("JVM_NewMultiArray"); | |
| 3709 JvmtiVMObjectAllocEventCollector oam; | |
| 3710 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
| 3711 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3712 assert(dim_array->is_typeArray(), "just checking"); | |
| 3713 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
| 3714 return JNIHandles::make_local(env, result); | |
| 3715 JVM_END | |
| 3716 | |
| 3717 | |
| 3718 // Networking library support //////////////////////////////////////////////////////////////////// | |
| 3719 | |
| 3720 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
| 3721 JVMWrapper("JVM_InitializeSocketLibrary"); | |
|
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6348631: remove the use of the HPI library from Hotspot
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diff
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|
3722 return 0; |
| 0 | 3723 JVM_END |
| 3724 | |
| 3725 | |
| 3726 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
| 3727 JVMWrapper("JVM_Socket"); | |
|
1980
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diff
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|
3728 return os::socket(domain, type, protocol); |
| 0 | 3729 JVM_END |
| 3730 | |
| 3731 | |
| 3732 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
| 3733 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
| 3734 //%note jvm_r6 | |
|
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diff
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|
3735 return os::socket_close(fd); |
| 0 | 3736 JVM_END |
| 3737 | |
| 3738 | |
| 3739 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
| 3740 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
| 3741 //%note jvm_r6 | |
|
1980
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diff
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|
3742 return os::socket_shutdown(fd, howto); |
| 0 | 3743 JVM_END |
| 3744 | |
| 3745 | |
| 3746 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3747 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
| 3748 //%note jvm_r6 | |
|
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|
3749 return os::recv(fd, buf, (size_t)nBytes, (uint)flags); |
| 0 | 3750 JVM_END |
| 3751 | |
| 3752 | |
| 3753 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3754 JVMWrapper2("JVM_Send (0x%x)", fd); | |
| 3755 //%note jvm_r6 | |
|
4717
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|
3756 return os::send(fd, buf, (size_t)nBytes, (uint)flags); |
| 0 | 3757 JVM_END |
| 3758 | |
| 3759 | |
| 3760 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
| 3761 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
| 3762 //%note jvm_r6 | |
|
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diff
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|
3763 return os::timeout(fd, timeout); |
| 0 | 3764 JVM_END |
| 3765 | |
| 3766 | |
| 3767 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
| 3768 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
| 3769 //%note jvm_r6 | |
|
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|
3770 return os::listen(fd, count); |
| 0 | 3771 JVM_END |
| 3772 | |
| 3773 | |
| 3774 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
| 3775 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
| 3776 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
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|
3777 return os::connect(fd, him, (socklen_t)len); |
| 0 | 3778 JVM_END |
| 3779 | |
| 3780 | |
| 3781 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
| 3782 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
| 3783 //%note jvm_r6 | |
|
4717
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7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3784 return os::bind(fd, him, (socklen_t)len); |
| 0 | 3785 JVM_END |
| 3786 | |
| 3787 | |
| 3788 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
| 3789 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
| 3790 //%note jvm_r6 | |
|
4717
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7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3791 socklen_t socklen = (socklen_t)(*len); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3792 jint result = os::accept(fd, him, &socklen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
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diff
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|
3793 *len = (jint)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
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parents:
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diff
changeset
|
3794 return result; |
| 0 | 3795 JVM_END |
| 3796 | |
| 3797 | |
| 3798 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
| 3799 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
| 3800 //%note jvm_r6 | |
|
4717
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7091417: recvfrom's 6th input should be of type socklen_t
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diff
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|
3801 socklen_t socklen = (socklen_t)(*fromlen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
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parents:
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|
3802 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
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parents:
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diff
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|
3803 *fromlen = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
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parents:
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diff
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|
3804 return result; |
| 0 | 3805 JVM_END |
| 3806 | |
| 3807 | |
| 3808 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
| 3809 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
| 3810 //%note jvm_r6 | |
|
4717
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7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3811 socklen_t socklen = (socklen_t)(*len); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3812 jint result = os::get_sock_name(fd, him, &socklen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3813 *len = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
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diff
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|
3814 return result; |
| 0 | 3815 JVM_END |
| 3816 | |
| 3817 | |
| 3818 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
| 3819 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
| 3820 //%note jvm_r6 | |
|
4717
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7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3821 return os::sendto(fd, buf, (size_t)len, (uint)flags, to, (socklen_t)tolen); |
| 0 | 3822 JVM_END |
| 3823 | |
| 3824 | |
| 3825 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
| 3826 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
| 3827 //%note jvm_r6 | |
|
1980
828eafbd85cc
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1972
diff
changeset
|
3828 return os::socket_available(fd, pbytes); |
| 0 | 3829 JVM_END |
| 3830 | |
| 3831 | |
| 3832 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
| 3833 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
| 3834 //%note jvm_r6 | |
|
4717
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7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3835 socklen_t socklen = (socklen_t)(*optlen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3836 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:
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diff
changeset
|
3837 *optlen = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3838 return result; |
| 0 | 3839 JVM_END |
| 3840 | |
| 3841 | |
| 3842 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
| 3843 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
| 3844 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3845 return os::set_sock_opt(fd, level, optname, optval, (socklen_t)optlen); |
| 0 | 3846 JVM_END |
| 3847 | |
|
4717
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diff
changeset
|
3848 |
| 0 | 3849 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) |
| 3850 JVMWrapper("JVM_GetHostName"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3851 return os::get_host_name(name, namelen); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
3852 JVM_END |
| 0 | 3853 |
|
4717
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|
3854 |
| 0 | 3855 // Library support /////////////////////////////////////////////////////////////////////////// |
| 3856 | |
| 3857 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
| 3858 //%note jvm_ct | |
| 3859 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
| 3860 char ebuf[1024]; | |
| 3861 void *load_result; | |
| 3862 { | |
| 3863 ThreadToNativeFromVM ttnfvm(thread); | |
|
1980
828eafbd85cc
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ikrylov
parents:
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diff
changeset
|
3864 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
| 0 | 3865 } |
| 3866 if (load_result == NULL) { | |
| 3867 char msg[1024]; | |
| 3868 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
| 3869 // Since 'ebuf' may contain a string encoded using | |
| 3870 // platform encoding scheme, we need to pass | |
| 3871 // Exceptions::unsafe_to_utf8 to the new_exception method | |
| 3872 // as the last argument. See bug 6367357. | |
| 3873 Handle h_exception = | |
| 3874 Exceptions::new_exception(thread, | |
| 3875 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
| 3876 msg, Exceptions::unsafe_to_utf8); | |
| 3877 | |
| 3878 THROW_HANDLE_0(h_exception); | |
| 3879 } | |
| 3880 return load_result; | |
| 3881 JVM_END | |
| 3882 | |
| 3883 | |
| 3884 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
| 3885 JVMWrapper("JVM_UnloadLibrary"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3886 os::dll_unload(handle); |
| 0 | 3887 JVM_END |
| 3888 | |
| 3889 | |
| 3890 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
| 3891 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3892 return os::dll_lookup(handle, name); |
| 0 | 3893 JVM_END |
| 3894 | |
|
4717
11c26bfcf8c7
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phh
parents:
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diff
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|
3895 |
| 0 | 3896 // Floating point support //////////////////////////////////////////////////////////////////// |
| 3897 | |
| 3898 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
| 3899 JVMWrapper("JVM_IsNaN"); | |
| 3900 return g_isnan(a); | |
| 3901 JVM_END | |
| 3902 | |
| 3903 | |
| 3904 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
| 3905 | |
| 3906 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
| 3907 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
| 3908 return Threads::is_supported_jni_version_including_1_1(version); | |
| 3909 JVM_END | |
| 3910 | |
| 3911 | |
| 3912 // String support /////////////////////////////////////////////////////////////////////////// | |
| 3913 | |
| 3914 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
| 3915 JVMWrapper("JVM_InternString"); | |
| 3916 JvmtiVMObjectAllocEventCollector oam; | |
| 3917 if (str == NULL) return NULL; | |
| 3918 oop string = JNIHandles::resolve_non_null(str); | |
| 3919 oop result = StringTable::intern(string, CHECK_NULL); | |
| 3920 return (jstring) JNIHandles::make_local(env, result); | |
| 3921 JVM_END | |
| 3922 | |
| 3923 | |
| 3924 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
| 3925 | |
| 3926 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
| 3927 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
| 3928 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
| 3929 // that only works with java threads. | |
| 3930 | |
| 3931 | |
| 3932 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
| 3933 VM_Exit::block_if_vm_exited(); | |
| 3934 JVMWrapper("JVM_RawMonitorCreate"); | |
| 3935 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
| 3936 } | |
| 3937 | |
| 3938 | |
| 3939 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
| 3940 VM_Exit::block_if_vm_exited(); | |
| 3941 JVMWrapper("JVM_RawMonitorDestroy"); | |
| 3942 delete ((Mutex*) mon); | |
| 3943 } | |
| 3944 | |
| 3945 | |
| 3946 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
| 3947 VM_Exit::block_if_vm_exited(); | |
| 3948 JVMWrapper("JVM_RawMonitorEnter"); | |
| 3949 ((Mutex*) mon)->jvm_raw_lock(); | |
| 3950 return 0; | |
| 3951 } | |
| 3952 | |
| 3953 | |
| 3954 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
| 3955 VM_Exit::block_if_vm_exited(); | |
| 3956 JVMWrapper("JVM_RawMonitorExit"); | |
| 3957 ((Mutex*) mon)->jvm_raw_unlock(); | |
| 3958 } | |
| 3959 | |
| 3960 | |
| 3961 // Support for Serialization | |
| 3962 | |
| 3963 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
| 3964 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
| 3965 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
| 3966 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
| 3967 | |
| 3968 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
| 3969 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
| 3970 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
| 3971 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
| 3972 | |
| 3973 | |
| 3974 void initialize_converter_functions() { | |
| 3975 if (JDK_Version::is_gte_jdk14x_version()) { | |
| 3976 // These functions only exist for compatibility with 1.3.1 and earlier | |
| 3977 return; | |
| 3978 } | |
| 3979 | |
| 3980 // called from universe_post_init() | |
| 3981 assert( | |
| 3982 int_bits_to_float_fn == NULL && | |
| 3983 long_bits_to_double_fn == NULL && | |
| 3984 float_to_int_bits_fn == NULL && | |
| 3985 double_to_long_bits_fn == NULL , | |
| 3986 "initialization done twice" | |
| 3987 ); | |
| 3988 // initialize | |
| 3989 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
| 3990 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
| 3991 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
| 3992 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
| 3993 // verify | |
| 3994 assert( | |
| 3995 int_bits_to_float_fn != NULL && | |
| 3996 long_bits_to_double_fn != NULL && | |
| 3997 float_to_int_bits_fn != NULL && | |
| 3998 double_to_long_bits_fn != NULL , | |
| 3999 "initialization failed" | |
| 4000 ); | |
| 4001 } | |
| 4002 | |
| 4003 | |
| 4004 | |
| 4005 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
| 4006 | |
| 18051 | 4007 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, |
| 4008 Handle loader, Handle protection_domain, | |
| 4009 jboolean throwError, TRAPS) { | |
| 0 | 4010 // Security Note: |
| 4011 // The Java level wrapper will perform the necessary security check allowing | |
| 18051 | 4012 // us to pass the NULL as the initiating class loader. The VM is responsible for |
| 4013 // the checkPackageAccess relative to the initiating class loader via the | |
| 4014 // protection_domain. The protection_domain is passed as NULL by the java code | |
| 4015 // if there is no security manager in 3-arg Class.forName(). | |
|
6725
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6964458: Reimplement class meta-data storage to use native memory
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6271
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|
4016 Klass* klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); |
|
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|
4017 |
| 0 | 4018 KlassHandle klass_handle(THREAD, klass); |
| 4019 // Check if we should initialize the class | |
| 4020 if (init && klass_handle->oop_is_instance()) { | |
| 4021 klass_handle->initialize(CHECK_NULL); | |
| 4022 } | |
| 4023 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
| 4024 } | |
| 4025 | |
| 4026 | |
| 4027 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
| 4028 | |
| 4029 #ifndef PRODUCT | |
| 4030 | |
| 4031 extern "C" { | |
| 4032 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
| 4033 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
| 4034 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
| 4035 } | |
| 4036 | |
| 4037 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
| 4038 JVMWrapper("JVM_AccessBoolVMFlag"); | |
|
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|
4039 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, Flag::INTERNAL); |
| 0 | 4040 JVM_END |
| 4041 | |
| 4042 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
| 4043 JVMWrapper("JVM_AccessVMIntFlag"); | |
| 4044 intx v; | |
|
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|
4045 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, Flag::INTERNAL); |
| 0 | 4046 *value = (jint)v; |
| 4047 return result; | |
| 4048 JVM_END | |
| 4049 | |
| 4050 | |
| 4051 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
| 4052 JVMWrapper("JVM_VMBreakPoint"); | |
| 4053 oop the_obj = JNIHandles::resolve(obj); | |
| 4054 BREAKPOINT; | |
| 4055 JVM_END | |
| 4056 | |
| 4057 | |
| 4058 #endif | |
| 4059 | |
| 4060 | |
| 4061 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4062 | |
| 4063 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
| 4064 JVMWrapper("JVM_InvokeMethod"); | |
| 4065 Handle method_handle; | |
| 4066 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
| 4067 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
| 4068 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
| 4069 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4070 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
| 4071 jobject res = JNIHandles::make_local(env, result); | |
| 4072 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4073 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
| 4074 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
| 4075 if (java_lang_Class::is_primitive(ret_type)) { | |
| 4076 // Only for primitive type vm allocates memory for java object. | |
| 4077 // See box() method. | |
| 4078 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4079 } | |
| 4080 } | |
| 4081 return res; | |
| 4082 } else { | |
| 4083 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
| 4084 } | |
| 4085 JVM_END | |
| 4086 | |
| 4087 | |
| 4088 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
| 4089 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
| 4090 oop constructor_mirror = JNIHandles::resolve(c); | |
| 4091 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4092 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
| 4093 jobject res = JNIHandles::make_local(env, result); | |
| 4094 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4095 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4096 } | |
| 4097 return res; | |
| 4098 JVM_END | |
| 4099 | |
| 4100 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4101 | |
| 4102 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
| 4103 JVMWrapper("JVM_SupportsCX8"); | |
| 4104 return VM_Version::supports_cx8(); | |
| 4105 JVM_END | |
| 4106 | |
| 4107 | |
| 4108 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
| 4109 JVMWrapper("JVM_CX8Field"); | |
| 4110 jlong res; | |
| 4111 oop o = JNIHandles::resolve(obj); | |
| 4112 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 4113 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
| 4114 | |
| 4115 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
| 4116 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
| 4117 | |
| 4118 return res == oldVal; | |
| 4119 JVM_END | |
| 4120 | |
|
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4121 // DTrace /////////////////////////////////////////////////////////////////// |
|
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|
4122 |
|
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|
4123 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
|
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4124 JVMWrapper("JVM_DTraceGetVersion"); |
|
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|
4125 return (jint)JVM_TRACING_DTRACE_VERSION; |
|
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|
4126 JVM_END |
|
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|
4127 |
|
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|
4128 JVM_ENTRY(jlong,JVM_DTraceActivate( |
|
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|
4129 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
|
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|
4130 JVM_DTraceProvider* providers)) |
|
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|
4131 JVMWrapper("JVM_DTraceActivate"); |
|
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|
4132 return DTraceJSDT::activate( |
|
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|
4133 version, module_name, providers_count, providers, CHECK_0); |
|
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|
4134 JVM_END |
|
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|
4135 |
|
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|
4136 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
|
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|
4137 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
|
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|
4138 return DTraceJSDT::is_probe_enabled(method); |
|
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|
4139 JVM_END |
|
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|
4140 |
|
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|
4141 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
|
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|
4142 JVMWrapper("JVM_DTraceDispose"); |
|
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|
4143 DTraceJSDT::dispose(handle); |
|
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4144 JVM_END |
|
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|
4145 |
|
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|
4146 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
|
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|
4147 JVMWrapper("JVM_DTraceIsSupported"); |
|
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|
4148 return DTraceJSDT::is_supported(); |
|
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4149 JVM_END |
|
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|
4150 |
| 0 | 4151 // Returns an array of all live Thread objects (VM internal JavaThreads, |
| 4152 // jvmti agent threads, and JNI attaching threads are skipped) | |
| 4153 // See CR 6404306 regarding JNI attaching threads | |
| 4154 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
| 4155 ResourceMark rm(THREAD); | |
| 4156 ThreadsListEnumerator tle(THREAD, false, false); | |
| 4157 JvmtiVMObjectAllocEventCollector oam; | |
| 4158 | |
| 4159 int num_threads = tle.num_threads(); | |
| 1142 | 4160 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
| 0 | 4161 objArrayHandle threads_ah(THREAD, r); |
| 4162 | |
| 4163 for (int i = 0; i < num_threads; i++) { | |
| 4164 Handle h = tle.get_threadObj(i); | |
| 4165 threads_ah->obj_at_put(i, h()); | |
| 4166 } | |
| 4167 | |
| 4168 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
| 4169 JVM_END | |
| 4170 | |
| 4171 | |
| 4172 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
| 4173 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
| 4174 // the corresponding entry in the given threads array | |
| 4175 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
| 4176 JVMWrapper("JVM_DumpThreads"); | |
| 4177 JvmtiVMObjectAllocEventCollector oam; | |
| 4178 | |
| 4179 // Check if threads is null | |
| 4180 if (threads == NULL) { | |
| 4181 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4182 } | |
| 4183 | |
| 4184 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
| 4185 objArrayHandle ah(THREAD, a); | |
| 4186 int num_threads = ah->length(); | |
| 4187 // check if threads is non-empty array | |
| 4188 if (num_threads == 0) { | |
| 4189 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
| 4190 } | |
| 4191 | |
| 4192 // check if threads is not an array of objects of Thread class | |
|
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|
4193 Klass* k = ObjArrayKlass::cast(ah->klass())->element_klass(); |
| 1142 | 4194 if (k != SystemDictionary::Thread_klass()) { |
| 0 | 4195 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
| 4196 } | |
| 4197 | |
| 4198 ResourceMark rm(THREAD); | |
| 4199 | |
| 4200 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
| 4201 for (int i = 0; i < num_threads; i++) { | |
| 4202 oop thread_obj = ah->obj_at(i); | |
| 4203 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
| 4204 thread_handle_array->append(h); | |
| 4205 } | |
| 4206 | |
| 4207 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
| 4208 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
| 4209 | |
| 4210 JVM_END | |
| 4211 | |
| 4212 // JVM monitoring and management support | |
| 4213 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
| 4214 return Management::get_jmm_interface(version); | |
| 4215 JVM_END | |
| 4216 | |
| 4217 // com.sun.tools.attach.VirtualMachine agent properties support | |
| 4218 // | |
| 4219 // Initialize the agent properties with the properties maintained in the VM | |
| 4220 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
| 4221 JVMWrapper("JVM_InitAgentProperties"); | |
| 4222 ResourceMark rm; | |
| 4223 | |
| 4224 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
| 4225 | |
| 4226 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
| 4227 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
| 4228 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
| 4229 return properties; | |
| 4230 JVM_END | |
| 4231 | |
| 4232 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
| 4233 { | |
| 4234 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
| 4235 JvmtiVMObjectAllocEventCollector oam; | |
| 4236 | |
| 4237 if (ofClass == NULL) { | |
| 4238 return NULL; | |
| 4239 } | |
| 4240 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
| 4241 // Special handling for primitive objects | |
| 4242 if (java_lang_Class::is_primitive(mirror())) { | |
| 4243 return NULL; | |
| 4244 } | |
|
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|
4245 Klass* k = java_lang_Class::as_Klass(mirror()); |
| 6983 | 4246 if (!k->oop_is_instance()) { |
| 0 | 4247 return NULL; |
| 4248 } | |
| 4249 instanceKlassHandle ik_h(THREAD, k); | |
| 4250 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
| 4251 if (encl_method_class_idx == 0) { | |
| 4252 return NULL; | |
| 4253 } | |
| 1142 | 4254 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
| 0 | 4255 objArrayHandle dest(THREAD, dest_o); |
|
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|
4256 Klass* enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); |
| 6983 | 4257 dest->obj_at_put(0, enc_k->java_mirror()); |
| 0 | 4258 int encl_method_method_idx = ik_h->enclosing_method_method_index(); |
| 4259 if (encl_method_method_idx != 0) { | |
|
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|
4260 Symbol* sym = ik_h->constants()->symbol_at( |
| 0 | 4261 extract_low_short_from_int( |
| 4262 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4263 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4264 dest->obj_at_put(1, str()); | |
|
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|
4265 sym = ik_h->constants()->symbol_at( |
| 0 | 4266 extract_high_short_from_int( |
| 4267 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4268 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4269 dest->obj_at_put(2, str()); | |
| 4270 } | |
| 4271 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 4272 } | |
| 4273 JVM_END | |
| 4274 | |
| 4275 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
| 4276 jint javaThreadState)) | |
| 4277 { | |
| 4278 // If new thread states are added in future JDK and VM versions, | |
| 4279 // this should check if the JDK version is compatible with thread | |
| 4280 // states supported by the VM. Return NULL if not compatible. | |
| 4281 // | |
| 4282 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4283 // to the Java thread state that the JDK supports. | |
| 4284 // | |
| 4285 | |
| 4286 typeArrayHandle values_h; | |
| 4287 switch (javaThreadState) { | |
| 4288 case JAVA_THREAD_STATE_NEW : { | |
| 4289 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4290 values_h = typeArrayHandle(THREAD, r); | |
| 4291 values_h->int_at_put(0, java_lang_Thread::NEW); | |
| 4292 break; | |
| 4293 } | |
| 4294 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4295 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4296 values_h = typeArrayHandle(THREAD, r); | |
| 4297 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
| 4298 break; | |
| 4299 } | |
| 4300 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4301 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4302 values_h = typeArrayHandle(THREAD, r); | |
| 4303 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
| 4304 break; | |
| 4305 } | |
| 4306 case JAVA_THREAD_STATE_WAITING : { | |
| 4307 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
| 4308 values_h = typeArrayHandle(THREAD, r); | |
| 4309 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
| 4310 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
| 4311 break; | |
| 4312 } | |
| 4313 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4314 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
| 4315 values_h = typeArrayHandle(THREAD, r); | |
| 4316 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
| 4317 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
| 4318 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
| 4319 break; | |
| 4320 } | |
| 4321 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4322 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4323 values_h = typeArrayHandle(THREAD, r); | |
| 4324 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
| 4325 break; | |
| 4326 } | |
| 4327 default: | |
| 4328 // Unknown state - probably incompatible JDK version | |
| 4329 return NULL; | |
| 4330 } | |
| 4331 | |
| 4332 return (jintArray) JNIHandles::make_local(env, values_h()); | |
| 4333 } | |
| 4334 JVM_END | |
| 4335 | |
| 4336 | |
| 4337 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
| 4338 jint javaThreadState, | |
| 4339 jintArray values)) | |
| 4340 { | |
| 4341 // If new thread states are added in future JDK and VM versions, | |
| 4342 // this should check if the JDK version is compatible with thread | |
| 4343 // states supported by the VM. Return NULL if not compatible. | |
| 4344 // | |
| 4345 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4346 // to the Java thread state that the JDK supports. | |
| 4347 // | |
| 4348 | |
| 4349 ResourceMark rm; | |
| 4350 | |
| 4351 // Check if threads is null | |
| 4352 if (values == NULL) { | |
| 4353 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4354 } | |
| 4355 | |
| 4356 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
| 4357 typeArrayHandle values_h(THREAD, v); | |
| 4358 | |
| 4359 objArrayHandle names_h; | |
| 4360 switch (javaThreadState) { | |
| 4361 case JAVA_THREAD_STATE_NEW : { | |
| 4362 assert(values_h->length() == 1 && | |
| 4363 values_h->int_at(0) == java_lang_Thread::NEW, | |
| 4364 "Invalid threadStatus value"); | |
| 4365 | |
| 1142 | 4366 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4367 1, /* only 1 substate */ |
| 4368 CHECK_NULL); | |
| 4369 names_h = objArrayHandle(THREAD, r); | |
| 4370 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
| 4371 names_h->obj_at_put(0, name()); | |
| 4372 break; | |
| 4373 } | |
| 4374 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4375 assert(values_h->length() == 1 && | |
| 4376 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
| 4377 "Invalid threadStatus value"); | |
| 4378 | |
| 1142 | 4379 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4380 1, /* only 1 substate */ |
| 4381 CHECK_NULL); | |
| 4382 names_h = objArrayHandle(THREAD, r); | |
| 4383 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
| 4384 names_h->obj_at_put(0, name()); | |
| 4385 break; | |
| 4386 } | |
| 4387 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4388 assert(values_h->length() == 1 && | |
| 4389 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
| 4390 "Invalid threadStatus value"); | |
| 4391 | |
| 1142 | 4392 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4393 1, /* only 1 substate */ |
| 4394 CHECK_NULL); | |
| 4395 names_h = objArrayHandle(THREAD, r); | |
| 4396 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
| 4397 names_h->obj_at_put(0, name()); | |
| 4398 break; | |
| 4399 } | |
| 4400 case JAVA_THREAD_STATE_WAITING : { | |
| 4401 assert(values_h->length() == 2 && | |
| 4402 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
| 4403 values_h->int_at(1) == java_lang_Thread::PARKED, | |
| 4404 "Invalid threadStatus value"); | |
| 1142 | 4405 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4406 2, /* number of substates */ |
| 4407 CHECK_NULL); | |
| 4408 names_h = objArrayHandle(THREAD, r); | |
| 4409 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
| 4410 CHECK_NULL); | |
| 4411 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
| 4412 CHECK_NULL); | |
| 4413 names_h->obj_at_put(0, name0()); | |
| 4414 names_h->obj_at_put(1, name1()); | |
| 4415 break; | |
| 4416 } | |
| 4417 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4418 assert(values_h->length() == 3 && | |
| 4419 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
| 4420 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
| 4421 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
| 4422 "Invalid threadStatus value"); | |
| 1142 | 4423 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4424 3, /* number of substates */ |
| 4425 CHECK_NULL); | |
| 4426 names_h = objArrayHandle(THREAD, r); | |
| 4427 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
| 4428 CHECK_NULL); | |
| 4429 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
| 4430 CHECK_NULL); | |
| 4431 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
| 4432 CHECK_NULL); | |
| 4433 names_h->obj_at_put(0, name0()); | |
| 4434 names_h->obj_at_put(1, name1()); | |
| 4435 names_h->obj_at_put(2, name2()); | |
| 4436 break; | |
| 4437 } | |
| 4438 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4439 assert(values_h->length() == 1 && | |
| 4440 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
| 4441 "Invalid threadStatus value"); | |
| 1142 | 4442 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4443 1, /* only 1 substate */ |
| 4444 CHECK_NULL); | |
| 4445 names_h = objArrayHandle(THREAD, r); | |
| 4446 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
| 4447 names_h->obj_at_put(0, name()); | |
| 4448 break; | |
| 4449 } | |
| 4450 default: | |
| 4451 // Unknown state - probably incompatible JDK version | |
| 4452 return NULL; | |
| 4453 } | |
| 4454 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
| 4455 } | |
| 4456 JVM_END | |
| 4457 | |
| 4458 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
| 4459 { | |
| 4460 memset(info, 0, sizeof(info_size)); | |
| 4461 | |
| 4462 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
| 4463 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4464 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4465 | |
| 4466 // when we add a new capability in the jvm_version_info struct, we should also | |
| 4467 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
| 4468 // counter defined in runtimeService.cpp. | |
| 4469 info->is_attachable = AttachListener::is_attach_supported(); | |
| 4470 } | |
| 4471 JVM_END |