Mercurial > hg > truffle
annotate src/share/vm/prims/jvm.cpp @ 12281:4f9a42c33738
8022887: Assertion hit while using class and redefining it with RedefineClasses simultaneously
Summary: Need to refetch each method from InstanceKlass after all safepoints. Removed leaky PreviousVersionInfo code.
Reviewed-by: dcubed, sspitsyn
| author | coleenp |
|---|---|
| date | Fri, 20 Sep 2013 09:30:02 -0400 |
| parents | ba9dacff9c9d |
| children | 0f37d1badced |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "classfile/classLoader.hpp" | |
| 27 #include "classfile/javaAssertions.hpp" | |
| 28 #include "classfile/javaClasses.hpp" | |
| 29 #include "classfile/symbolTable.hpp" | |
| 30 #include "classfile/systemDictionary.hpp" | |
| 31 #include "classfile/vmSymbols.hpp" | |
| 32 #include "gc_interface/collectedHeap.inline.hpp" | |
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33 #include "interpreter/bytecode.hpp" |
| 1972 | 34 #include "memory/oopFactory.hpp" |
| 35 #include "memory/universe.inline.hpp" | |
| 3938 | 36 #include "oops/fieldStreams.hpp" |
| 1972 | 37 #include "oops/instanceKlass.hpp" |
| 38 #include "oops/objArrayKlass.hpp" | |
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39 #include "oops/method.hpp" |
| 1972 | 40 #include "prims/jvm.h" |
| 41 #include "prims/jvm_misc.hpp" | |
| 42 #include "prims/jvmtiExport.hpp" | |
| 43 #include "prims/jvmtiThreadState.hpp" | |
| 44 #include "prims/nativeLookup.hpp" | |
| 45 #include "prims/privilegedStack.hpp" | |
| 46 #include "runtime/arguments.hpp" | |
| 47 #include "runtime/dtraceJSDT.hpp" | |
| 48 #include "runtime/handles.inline.hpp" | |
| 49 #include "runtime/init.hpp" | |
| 50 #include "runtime/interfaceSupport.hpp" | |
| 51 #include "runtime/java.hpp" | |
| 52 #include "runtime/javaCalls.hpp" | |
| 53 #include "runtime/jfieldIDWorkaround.hpp" | |
| 54 #include "runtime/os.hpp" | |
| 55 #include "runtime/perfData.hpp" | |
| 56 #include "runtime/reflection.hpp" | |
| 57 #include "runtime/vframe.hpp" | |
| 58 #include "runtime/vm_operations.hpp" | |
| 59 #include "services/attachListener.hpp" | |
| 60 #include "services/management.hpp" | |
| 61 #include "services/threadService.hpp" | |
| 10405 | 62 #include "trace/tracing.hpp" |
| 1972 | 63 #include "utilities/copy.hpp" |
| 64 #include "utilities/defaultStream.hpp" | |
| 65 #include "utilities/dtrace.hpp" | |
| 66 #include "utilities/events.hpp" | |
| 67 #include "utilities/histogram.hpp" | |
| 68 #include "utilities/top.hpp" | |
| 69 #include "utilities/utf8.hpp" | |
| 70 #ifdef TARGET_OS_FAMILY_linux | |
| 71 # include "jvm_linux.h" | |
| 72 #endif | |
| 73 #ifdef TARGET_OS_FAMILY_solaris | |
| 74 # include "jvm_solaris.h" | |
| 75 #endif | |
| 76 #ifdef TARGET_OS_FAMILY_windows | |
| 77 # include "jvm_windows.h" | |
| 78 #endif | |
| 3960 | 79 #ifdef TARGET_OS_FAMILY_bsd |
| 80 # include "jvm_bsd.h" | |
| 81 #endif | |
| 1972 | 82 |
| 0 | 83 #include <errno.h> |
| 84 | |
| 4006 | 85 #ifndef USDT2 |
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86 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__begin, long long); |
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87 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__end, int); |
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88 HS_DTRACE_PROBE_DECL0(hotspot, thread__yield); |
| 4006 | 89 #endif /* !USDT2 */ |
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90 |
| 0 | 91 /* |
| 92 NOTE about use of any ctor or function call that can trigger a safepoint/GC: | |
| 93 such ctors and calls MUST NOT come between an oop declaration/init and its | |
| 94 usage because if objects are move this may cause various memory stomps, bus | |
| 95 errors and segfaults. Here is a cookbook for causing so called "naked oop | |
| 96 failures": | |
| 97 | |
| 98 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> { | |
| 99 JVMWrapper("JVM_GetClassDeclaredFields"); | |
| 100 | |
| 101 // Object address to be held directly in mirror & not visible to GC | |
| 102 oop mirror = JNIHandles::resolve_non_null(ofClass); | |
| 103 | |
| 104 // If this ctor can hit a safepoint, moving objects around, then | |
| 105 ComplexConstructor foo; | |
| 106 | |
| 107 // Boom! mirror may point to JUNK instead of the intended object | |
| 108 (some dereference of mirror) | |
| 109 | |
| 110 // Here's another call that may block for GC, making mirror stale | |
| 111 MutexLocker ml(some_lock); | |
| 112 | |
| 113 // And here's an initializer that can result in a stale oop | |
| 114 // all in one step. | |
| 115 oop o = call_that_can_throw_exception(TRAPS); | |
| 116 | |
| 117 | |
| 118 The solution is to keep the oop declaration BELOW the ctor or function | |
| 119 call that might cause a GC, do another resolve to reassign the oop, or | |
| 120 consider use of a Handle instead of an oop so there is immunity from object | |
| 121 motion. But note that the "QUICK" entries below do not have a handlemark | |
| 122 and thus can only support use of handles passed in. | |
| 123 */ | |
| 124 | |
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125 static void trace_class_resolution_impl(Klass* to_class, TRAPS) { |
| 0 | 126 ResourceMark rm; |
| 127 int line_number = -1; | |
| 128 const char * source_file = NULL; | |
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129 const char * trace = "explicit"; |
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130 InstanceKlass* caller = NULL; |
| 0 | 131 JavaThread* jthread = JavaThread::current(); |
| 132 if (jthread->has_last_Java_frame()) { | |
| 133 vframeStream vfst(jthread); | |
| 134 | |
| 135 // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames | |
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136 TempNewSymbol access_controller = SymbolTable::new_symbol("java/security/AccessController", CHECK); |
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137 Klass* access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); |
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138 TempNewSymbol privileged_action = SymbolTable::new_symbol("java/security/PrivilegedAction", CHECK); |
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139 Klass* privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); |
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140 |
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141 Method* last_caller = NULL; |
| 0 | 142 |
| 143 while (!vfst.at_end()) { | |
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144 Method* m = vfst.method(); |
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145 if (!vfst.method()->method_holder()->is_subclass_of(SystemDictionary::ClassLoader_klass())&& |
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146 !vfst.method()->method_holder()->is_subclass_of(access_controller_klass) && |
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147 !vfst.method()->method_holder()->is_subclass_of(privileged_action_klass)) { |
| 0 | 148 break; |
| 149 } | |
| 150 last_caller = m; | |
| 151 vfst.next(); | |
| 152 } | |
| 153 // if this is called from Class.forName0 and that is called from Class.forName, | |
| 154 // then print the caller of Class.forName. If this is Class.loadClass, then print | |
| 155 // that caller, otherwise keep quiet since this should be picked up elsewhere. | |
| 156 bool found_it = false; | |
| 157 if (!vfst.at_end() && | |
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158 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
| 0 | 159 vfst.method()->name() == vmSymbols::forName0_name()) { |
| 160 vfst.next(); | |
| 161 if (!vfst.at_end() && | |
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162 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
| 0 | 163 vfst.method()->name() == vmSymbols::forName_name()) { |
| 164 vfst.next(); | |
| 165 found_it = true; | |
| 166 } | |
| 167 } else if (last_caller != NULL && | |
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168 last_caller->method_holder()->name() == |
| 0 | 169 vmSymbols::java_lang_ClassLoader() && |
| 170 (last_caller->name() == vmSymbols::loadClassInternal_name() || | |
| 171 last_caller->name() == vmSymbols::loadClass_name())) { | |
| 172 found_it = true; | |
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173 } else if (!vfst.at_end()) { |
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174 if (vfst.method()->is_native()) { |
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175 // JNI call |
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176 found_it = true; |
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177 } |
| 0 | 178 } |
| 179 if (found_it && !vfst.at_end()) { | |
| 180 // found the caller | |
| 181 caller = vfst.method()->method_holder(); | |
| 182 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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183 if (line_number == -1) { |
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184 // show method name if it's a native method |
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185 trace = vfst.method()->name_and_sig_as_C_string(); |
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186 } |
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187 Symbol* s = caller->source_file_name(); |
| 0 | 188 if (s != NULL) { |
| 189 source_file = s->as_C_string(); | |
| 190 } | |
| 191 } | |
| 192 } | |
| 193 if (caller != NULL) { | |
| 194 if (to_class != caller) { | |
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195 const char * from = caller->external_name(); |
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196 const char * to = to_class->external_name(); |
| 0 | 197 // print in a single call to reduce interleaving between threads |
| 198 if (source_file != NULL) { | |
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199 tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace); |
| 0 | 200 } else { |
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201 tty->print("RESOLVE %s %s (%s)\n", from, to, trace); |
| 0 | 202 } |
| 203 } | |
| 204 } | |
| 205 } | |
| 206 | |
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207 void trace_class_resolution(Klass* to_class) { |
| 0 | 208 EXCEPTION_MARK; |
| 209 trace_class_resolution_impl(to_class, THREAD); | |
| 210 if (HAS_PENDING_EXCEPTION) { | |
| 211 CLEAR_PENDING_EXCEPTION; | |
| 212 } | |
| 213 } | |
| 214 | |
| 215 // Wrapper to trace JVM functions | |
| 216 | |
| 217 #ifdef ASSERT | |
| 218 class JVMTraceWrapper : public StackObj { | |
| 219 public: | |
| 220 JVMTraceWrapper(const char* format, ...) { | |
| 221 if (TraceJVMCalls) { | |
| 222 va_list ap; | |
| 223 va_start(ap, format); | |
| 224 tty->print("JVM "); | |
| 225 tty->vprint_cr(format, ap); | |
| 226 va_end(ap); | |
| 227 } | |
| 228 } | |
| 229 }; | |
| 230 | |
| 231 Histogram* JVMHistogram; | |
| 232 volatile jint JVMHistogram_lock = 0; | |
| 233 | |
| 234 class JVMHistogramElement : public HistogramElement { | |
| 235 public: | |
| 236 JVMHistogramElement(const char* name); | |
| 237 }; | |
| 238 | |
| 239 JVMHistogramElement::JVMHistogramElement(const char* elementName) { | |
| 240 _name = elementName; | |
| 241 uintx count = 0; | |
| 242 | |
| 243 while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) { | |
| 244 while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) { | |
| 245 count +=1; | |
| 246 if ( (WarnOnStalledSpinLock > 0) | |
| 247 && (count % WarnOnStalledSpinLock == 0)) { | |
| 248 warning("JVMHistogram_lock seems to be stalled"); | |
| 249 } | |
| 250 } | |
| 251 } | |
| 252 | |
| 253 if(JVMHistogram == NULL) | |
| 254 JVMHistogram = new Histogram("JVM Call Counts",100); | |
| 255 | |
| 256 JVMHistogram->add_element(this); | |
| 257 Atomic::dec(&JVMHistogram_lock); | |
| 258 } | |
| 259 | |
| 260 #define JVMCountWrapper(arg) \ | |
| 261 static JVMHistogramElement* e = new JVMHistogramElement(arg); \ | |
| 262 if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen! | |
| 263 | |
| 264 #define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) | |
| 265 #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) | |
| 266 #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) | |
| 267 #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) | |
| 268 #else | |
| 269 #define JVMWrapper(arg1) | |
| 270 #define JVMWrapper2(arg1, arg2) | |
| 271 #define JVMWrapper3(arg1, arg2, arg3) | |
| 272 #define JVMWrapper4(arg1, arg2, arg3, arg4) | |
| 273 #endif | |
| 274 | |
| 275 | |
| 276 // Interface version ///////////////////////////////////////////////////////////////////// | |
| 277 | |
| 278 | |
| 279 JVM_LEAF(jint, JVM_GetInterfaceVersion()) | |
| 280 return JVM_INTERFACE_VERSION; | |
| 281 JVM_END | |
| 282 | |
| 283 | |
| 284 // java.lang.System ////////////////////////////////////////////////////////////////////// | |
| 285 | |
| 286 | |
| 287 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored)) | |
| 288 JVMWrapper("JVM_CurrentTimeMillis"); | |
| 289 return os::javaTimeMillis(); | |
| 290 JVM_END | |
| 291 | |
| 292 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored)) | |
| 293 JVMWrapper("JVM_NanoTime"); | |
| 294 return os::javaTimeNanos(); | |
| 295 JVM_END | |
| 296 | |
| 297 | |
| 298 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, | |
| 299 jobject dst, jint dst_pos, jint length)) | |
| 300 JVMWrapper("JVM_ArrayCopy"); | |
| 301 // Check if we have null pointers | |
| 302 if (src == NULL || dst == NULL) { | |
| 303 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 304 } | |
| 305 arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); | |
| 306 arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); | |
| 307 assert(s->is_oop(), "JVM_ArrayCopy: src not an oop"); | |
| 308 assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); | |
| 309 // Do copy | |
| 6983 | 310 s->klass()->copy_array(s, src_pos, d, dst_pos, length, thread); |
| 0 | 311 JVM_END |
| 312 | |
| 313 | |
| 314 static void set_property(Handle props, const char* key, const char* value, TRAPS) { | |
| 315 JavaValue r(T_OBJECT); | |
| 316 // public synchronized Object put(Object key, Object value); | |
| 317 HandleMark hm(THREAD); | |
| 318 Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK); | |
| 319 Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK); | |
| 320 JavaCalls::call_virtual(&r, | |
| 321 props, | |
| 1142 | 322 KlassHandle(THREAD, SystemDictionary::Properties_klass()), |
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323 vmSymbols::put_name(), |
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324 vmSymbols::object_object_object_signature(), |
| 0 | 325 key_str, |
| 326 value_str, | |
| 327 THREAD); | |
| 328 } | |
| 329 | |
| 330 | |
| 331 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties)); | |
| 332 | |
| 333 | |
| 334 JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties)) | |
| 335 JVMWrapper("JVM_InitProperties"); | |
| 336 ResourceMark rm; | |
| 337 | |
| 338 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
| 339 | |
| 340 // System property list includes both user set via -D option and | |
| 341 // jvm system specific properties. | |
| 342 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
| 343 PUTPROP(props, p->key(), p->value()); | |
| 344 } | |
| 345 | |
| 346 // Convert the -XX:MaxDirectMemorySize= command line flag | |
| 347 // to the sun.nio.MaxDirectMemorySize property. | |
| 348 // Do this after setting user properties to prevent people | |
| 349 // from setting the value with a -D option, as requested. | |
| 350 { | |
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351 if (FLAG_IS_DEFAULT(MaxDirectMemorySize)) { |
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352 PUTPROP(props, "sun.nio.MaxDirectMemorySize", "-1"); |
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353 } else { |
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354 char as_chars[256]; |
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355 jio_snprintf(as_chars, sizeof(as_chars), UINTX_FORMAT, MaxDirectMemorySize); |
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356 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); |
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357 } |
| 0 | 358 } |
| 359 | |
| 360 // JVM monitoring and management support | |
| 361 // Add the sun.management.compiler property for the compiler's name | |
| 362 { | |
| 363 #undef CSIZE | |
| 364 #if defined(_LP64) || defined(_WIN64) | |
| 365 #define CSIZE "64-Bit " | |
| 366 #else | |
| 367 #define CSIZE | |
| 368 #endif // 64bit | |
| 369 | |
| 370 #ifdef TIERED | |
| 371 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; | |
| 372 #else | |
| 373 #if defined(COMPILER1) | |
| 374 const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; | |
| 375 #elif defined(COMPILER2) | |
| 376 const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; | |
| 377 #else | |
| 378 const char* compiler_name = ""; | |
| 379 #endif // compilers | |
| 380 #endif // TIERED | |
| 381 | |
| 382 if (*compiler_name != '\0' && | |
| 383 (Arguments::mode() != Arguments::_int)) { | |
| 384 PUTPROP(props, "sun.management.compiler", compiler_name); | |
| 385 } | |
| 386 } | |
| 387 | |
| 388 return properties; | |
| 389 JVM_END | |
| 390 | |
| 391 | |
| 392 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// | |
| 393 | |
| 394 extern volatile jint vm_created; | |
| 395 | |
| 396 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
| 397 if (vm_created != 0 && (code == 0)) { | |
| 398 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
| 399 Universe::run_finalizers_on_exit(); | |
| 400 } | |
| 401 before_exit(thread); | |
| 402 vm_exit(code); | |
| 403 JVM_END | |
| 404 | |
| 405 | |
| 406 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
| 407 before_exit(thread); | |
| 408 vm_exit(code); | |
| 409 JVM_END | |
| 410 | |
| 411 | |
| 412 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
| 413 register_on_exit_function(func); | |
| 414 JVM_END | |
| 415 | |
| 416 | |
| 417 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
| 418 JVMWrapper("JVM_GC"); | |
| 419 if (!DisableExplicitGC) { | |
| 420 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
| 421 } | |
| 422 JVM_END | |
| 423 | |
| 424 | |
| 425 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
| 426 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
| 427 return Universe::heap()->millis_since_last_gc(); | |
| 428 JVM_END | |
| 429 | |
| 430 | |
| 431 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
| 432 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
| 433 JVM_END | |
| 434 | |
| 435 | |
| 436 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
| 437 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
| 438 JVM_END | |
| 439 | |
| 440 static inline jlong convert_size_t_to_jlong(size_t val) { | |
| 441 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
| 442 NOT_LP64 (return (jlong)val;) | |
| 443 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
| 444 } | |
| 445 | |
| 446 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
| 447 JVMWrapper("JVM_TotalMemory"); | |
| 448 size_t n = Universe::heap()->capacity(); | |
| 449 return convert_size_t_to_jlong(n); | |
| 450 JVM_END | |
| 451 | |
| 452 | |
| 453 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
| 454 JVMWrapper("JVM_FreeMemory"); | |
| 455 CollectedHeap* ch = Universe::heap(); | |
|
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456 size_t n; |
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457 { |
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458 MutexLocker x(Heap_lock); |
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459 n = ch->capacity() - ch->used(); |
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460 } |
| 0 | 461 return convert_size_t_to_jlong(n); |
| 462 JVM_END | |
| 463 | |
| 464 | |
| 465 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
| 466 JVMWrapper("JVM_MaxMemory"); | |
| 467 size_t n = Universe::heap()->max_capacity(); | |
| 468 return convert_size_t_to_jlong(n); | |
| 469 JVM_END | |
| 470 | |
| 471 | |
| 472 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
| 473 JVMWrapper("JVM_ActiveProcessorCount"); | |
| 474 return os::active_processor_count(); | |
| 475 JVM_END | |
| 476 | |
| 477 | |
| 478 | |
| 479 // java.lang.Throwable ////////////////////////////////////////////////////// | |
| 480 | |
| 481 | |
| 482 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
| 483 JVMWrapper("JVM_FillInStackTrace"); | |
| 484 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
| 485 java_lang_Throwable::fill_in_stack_trace(exception); | |
| 486 JVM_END | |
| 487 | |
| 488 | |
| 489 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
| 490 JVMWrapper("JVM_GetStackTraceDepth"); | |
| 491 oop exception = JNIHandles::resolve(throwable); | |
| 492 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
| 493 JVM_END | |
| 494 | |
| 495 | |
| 496 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
| 497 JVMWrapper("JVM_GetStackTraceElement"); | |
| 498 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
| 499 oop exception = JNIHandles::resolve(throwable); | |
| 500 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
| 501 return JNIHandles::make_local(env, element); | |
| 502 JVM_END | |
| 503 | |
| 504 | |
| 505 // java.lang.Object /////////////////////////////////////////////// | |
| 506 | |
| 507 | |
| 508 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
| 509 JVMWrapper("JVM_IHashCode"); | |
| 510 // as implemented in the classic virtual machine; return 0 if object is NULL | |
| 511 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
| 512 JVM_END | |
| 513 | |
| 514 | |
| 515 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
| 516 JVMWrapper("JVM_MonitorWait"); | |
| 517 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 518 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
| 519 if (JvmtiExport::should_post_monitor_wait()) { | |
| 520 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
| 521 } | |
| 522 ObjectSynchronizer::wait(obj, ms, CHECK); | |
| 523 JVM_END | |
| 524 | |
| 525 | |
| 526 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
| 527 JVMWrapper("JVM_MonitorNotify"); | |
| 528 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 529 ObjectSynchronizer::notify(obj, CHECK); | |
| 530 JVM_END | |
| 531 | |
| 532 | |
| 533 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
| 534 JVMWrapper("JVM_MonitorNotifyAll"); | |
| 535 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 536 ObjectSynchronizer::notifyall(obj, CHECK); | |
| 537 JVM_END | |
| 538 | |
| 539 | |
| 540 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
| 541 JVMWrapper("JVM_Clone"); | |
| 542 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 543 const KlassHandle klass (THREAD, obj->klass()); | |
| 544 JvmtiVMObjectAllocEventCollector oam; | |
| 545 | |
| 546 #ifdef ASSERT | |
| 547 // Just checking that the cloneable flag is set correct | |
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548 if (obj->is_array()) { |
| 0 | 549 guarantee(klass->is_cloneable(), "all arrays are cloneable"); |
| 550 } else { | |
| 551 guarantee(obj->is_instance(), "should be instanceOop"); | |
| 1142 | 552 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
| 0 | 553 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
| 554 } | |
| 555 #endif | |
| 556 | |
| 557 // Check if class of obj supports the Cloneable interface. | |
| 558 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
| 559 if (!klass->is_cloneable()) { | |
| 560 ResourceMark rm(THREAD); | |
| 561 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
| 562 } | |
| 563 | |
| 564 // Make shallow object copy | |
| 565 const int size = obj->size(); | |
| 566 oop new_obj = NULL; | |
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567 if (obj->is_array()) { |
| 0 | 568 const int length = ((arrayOop)obj())->length(); |
| 569 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
| 570 } else { | |
| 571 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
| 572 } | |
| 573 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
| 574 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
| 575 // be suspended in the middle of copying the pointer and end up with parts | |
| 576 // of two different pointers in the field. Subsequent dereferences will crash. | |
| 577 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
| 578 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
| 579 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
| 580 // The same is true of StubRoutines::object_copy and the various oop_copy | |
| 581 // variants, and of the code generated by the inline_native_clone intrinsic. | |
| 582 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
| 583 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
| 584 (size_t)align_object_size(size) / HeapWordsPerLong); | |
| 585 // Clear the header | |
| 586 new_obj->init_mark(); | |
| 587 | |
| 588 // Store check (mark entire object and let gc sort it out) | |
| 589 BarrierSet* bs = Universe::heap()->barrier_set(); | |
| 590 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
| 591 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
| 592 | |
| 593 // Caution: this involves a java upcall, so the clone should be | |
| 594 // "gc-robust" by this stage. | |
| 595 if (klass->has_finalizer()) { | |
| 596 assert(obj->is_instance(), "should be instanceOop"); | |
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597 new_obj = InstanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); |
| 0 | 598 } |
| 599 | |
| 600 return JNIHandles::make_local(env, oop(new_obj)); | |
| 601 JVM_END | |
| 602 | |
| 603 // java.lang.Compiler //////////////////////////////////////////////////// | |
| 604 | |
| 605 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
| 606 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
| 607 // functions are all silently ignored unless JVM warnings are printed. | |
| 608 | |
| 609 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
| 610 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
| 611 JVM_END | |
| 612 | |
| 613 | |
| 614 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
| 615 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
| 616 return JNI_FALSE; | |
| 617 JVM_END | |
| 618 | |
| 619 | |
| 620 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
| 621 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
| 622 return JNI_FALSE; | |
| 623 JVM_END | |
| 624 | |
| 625 | |
| 626 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
| 627 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
| 628 return JNI_FALSE; | |
| 629 JVM_END | |
| 630 | |
| 631 | |
| 632 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
| 633 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
| 634 return NULL; | |
| 635 JVM_END | |
| 636 | |
| 637 | |
| 638 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
| 639 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
| 640 JVM_END | |
| 641 | |
| 642 | |
| 643 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
| 644 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
| 645 JVM_END | |
| 646 | |
| 647 | |
| 648 | |
| 649 // Error message support ////////////////////////////////////////////////////// | |
| 650 | |
| 651 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
| 652 JVMWrapper("JVM_GetLastErrorString"); | |
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653 return (jint)os::lasterror(buf, len); |
| 0 | 654 JVM_END |
| 655 | |
| 656 | |
| 657 // java.io.File /////////////////////////////////////////////////////////////// | |
| 658 | |
| 659 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
| 660 JVMWrapper2("JVM_NativePath (%s)", path); | |
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661 return os::native_path(path); |
| 0 | 662 JVM_END |
| 663 | |
| 664 | |
| 665 // Misc. class handling /////////////////////////////////////////////////////////// | |
| 666 | |
| 667 | |
| 668 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
| 669 JVMWrapper("JVM_GetCallerClass"); | |
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670 |
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671 // Pre-JDK 8 and early builds of JDK 8 don't have a CallerSensitive annotation. |
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672 if (SystemDictionary::reflect_CallerSensitive_klass() == NULL) { |
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673 Klass* k = thread->security_get_caller_class(depth); |
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674 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, k->java_mirror()); |
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675 } else { |
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676 // Basic handshaking with Java_sun_reflect_Reflection_getCallerClass |
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677 assert(depth == -1, "wrong handshake depth"); |
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678 } |
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679 |
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680 // Getting the class of the caller frame. |
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681 // |
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682 // The call stack at this point looks something like this: |
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683 // |
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684 // [0] [ @CallerSensitive public sun.reflect.Reflection.getCallerClass ] |
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685 // [1] [ @CallerSensitive API.method ] |
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686 // [.] [ (skipped intermediate frames) ] |
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687 // [n] [ caller ] |
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688 vframeStream vfst(thread); |
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689 // Cf. LibraryCallKit::inline_native_Reflection_getCallerClass |
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690 for (int n = 0; !vfst.at_end(); vfst.security_next(), n++) { |
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691 Method* m = vfst.method(); |
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692 assert(m != NULL, "sanity"); |
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693 switch (n) { |
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694 case 0: |
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695 // This must only be called from Reflection.getCallerClass |
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696 if (m->intrinsic_id() != vmIntrinsics::_getCallerClass) { |
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697 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetCallerClass must only be called from Reflection.getCallerClass"); |
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698 } |
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699 // fall-through |
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700 case 1: |
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701 // Frame 0 and 1 must be caller sensitive. |
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702 if (!m->caller_sensitive()) { |
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703 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), err_msg("CallerSensitive annotation expected at frame %d", n)); |
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|
704 } |
|
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parents:
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|
705 break; |
|
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diff
changeset
|
706 default: |
|
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changeset
|
707 if (!m->is_ignored_by_security_stack_walk()) { |
|
16885e702c88
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|
708 // We have reached the desired frame; return the holder class. |
|
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|
709 return (jclass) JNIHandles::make_local(env, m->method_holder()->java_mirror()); |
|
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changeset
|
710 } |
|
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twisti
parents:
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diff
changeset
|
711 break; |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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8031
diff
changeset
|
712 } |
|
16885e702c88
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twisti
parents:
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diff
changeset
|
713 } |
|
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|
714 return NULL; |
| 0 | 715 JVM_END |
| 716 | |
| 717 | |
| 718 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
| 719 JVMWrapper("JVM_FindPrimitiveClass"); | |
| 720 oop mirror = NULL; | |
| 721 BasicType t = name2type(utf); | |
| 722 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
| 723 mirror = Universe::java_mirror(t); | |
| 724 } | |
| 725 if (mirror == NULL) { | |
| 726 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
| 727 } else { | |
| 728 return (jclass) JNIHandles::make_local(env, mirror); | |
| 729 } | |
| 730 JVM_END | |
| 731 | |
| 732 | |
| 733 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
| 734 JVMWrapper("JVM_ResolveClass"); | |
| 735 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
| 736 JVM_END | |
| 737 | |
|
878
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|
738 |
|
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|
739 // Returns a class loaded by the bootstrap class loader; or null |
|
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740 // if not found. ClassNotFoundException is not thrown. |
|
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|
741 // |
|
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|
742 // Rationale behind JVM_FindClassFromBootLoader |
|
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|
743 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
|
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744 // b> because of (a) java.dll has a direct dependecy on the unexported |
|
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|
745 // private symbol "_JVM_FindClassFromClassLoader@20". |
|
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746 // c> the launcher cannot use the private symbol as it dynamically opens |
|
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|
747 // the entry point, so if something changes, the launcher will fail |
|
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|
748 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
|
abe076e3636f
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|
749 // stable exported interface. |
|
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|
750 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
|
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|
751 // signature to change from _JVM_FindClassFromClassLoader@20 to |
|
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|
752 // JVM_FindClassFromClassLoader and will not be backward compatible |
|
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|
753 // with older JDKs. |
|
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|
754 // Thus a public/stable exported entry point is the right solution, |
|
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|
755 // public here means public in linker semantics, and is exported only |
|
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|
756 // to the JDK, and is not intended to be a public API. |
|
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diff
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|
757 |
|
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|
758 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
|
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|
759 const char* name)) |
|
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|
760 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
|
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|
761 |
|
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|
762 // Java libraries should ensure that name is never null... |
|
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|
763 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
|
878
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diff
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|
764 // It's impossible to create this class; the name cannot fit |
|
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|
765 // into the constant pool. |
|
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6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
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diff
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|
766 return NULL; |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
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diff
changeset
|
767 } |
|
abe076e3636f
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changeset
|
768 |
|
2177
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changeset
|
769 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
|
6725
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changeset
|
770 Klass* k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
|
878
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mchung
parents:
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diff
changeset
|
771 if (k == NULL) { |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
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diff
changeset
|
772 return NULL; |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
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diff
changeset
|
773 } |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
774 |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
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diff
changeset
|
775 if (TraceClassResolution) { |
|
abe076e3636f
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diff
changeset
|
776 trace_class_resolution(k); |
|
abe076e3636f
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diff
changeset
|
777 } |
| 6983 | 778 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
|
878
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
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diff
changeset
|
779 JVM_END |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
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diff
changeset
|
780 |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
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diff
changeset
|
781 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
|
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mchung
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diff
changeset
|
782 jboolean init, jobject loader, |
|
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mchung
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diff
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|
783 jboolean throwError)) |
|
abe076e3636f
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mchung
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diff
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|
784 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
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diff
changeset
|
785 throwError ? "error" : "exception"); |
| 388 | 786 // Java libraries should ensure that name is never null... |
|
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changeset
|
787 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
| 388 | 788 // It's impossible to create this class; the name cannot fit |
| 789 // into the constant pool. | |
| 790 if (throwError) { | |
| 791 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 792 } else { | |
| 793 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
| 794 } | |
| 795 } | |
|
2177
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diff
changeset
|
796 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
| 388 | 797 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
| 798 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 799 Handle(), throwError, THREAD); | |
| 800 | |
| 801 if (TraceClassResolution && result != NULL) { | |
|
6725
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changeset
|
802 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
| 388 | 803 } |
| 804 return result; | |
| 0 | 805 JVM_END |
| 806 | |
| 807 | |
| 808 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
| 809 jboolean init, jclass from)) | |
| 810 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
|
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changeset
|
811 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
| 0 | 812 // It's impossible to create this class; the name cannot fit |
| 813 // into the constant pool. | |
| 814 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 815 } | |
|
2177
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diff
changeset
|
816 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
| 0 | 817 oop from_class_oop = JNIHandles::resolve(from); |
|
6725
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changeset
|
818 Klass* from_class = (from_class_oop == NULL) |
|
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|
819 ? (Klass*)NULL |
|
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|
820 : java_lang_Class::as_Klass(from_class_oop); |
| 0 | 821 oop class_loader = NULL; |
| 822 oop protection_domain = NULL; | |
| 823 if (from_class != NULL) { | |
| 6983 | 824 class_loader = from_class->class_loader(); |
| 825 protection_domain = from_class->protection_domain(); | |
| 0 | 826 } |
| 827 Handle h_loader(THREAD, class_loader); | |
| 828 Handle h_prot (THREAD, protection_domain); | |
| 829 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 830 h_prot, true, thread); | |
| 831 | |
| 832 if (TraceClassResolution && result != NULL) { | |
| 833 // this function is generally only used for class loading during verification. | |
| 834 ResourceMark rm; | |
| 835 oop from_mirror = JNIHandles::resolve_non_null(from); | |
|
6725
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|
836 Klass* from_class = java_lang_Class::as_Klass(from_mirror); |
| 6983 | 837 const char * from_name = from_class->external_name(); |
| 0 | 838 |
| 839 oop mirror = JNIHandles::resolve_non_null(result); | |
|
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|
840 Klass* to_class = java_lang_Class::as_Klass(mirror); |
| 6983 | 841 const char * to = to_class->external_name(); |
| 0 | 842 tty->print("RESOLVE %s %s (verification)\n", from_name, to); |
| 843 } | |
| 844 | |
| 845 return result; | |
| 846 JVM_END | |
| 847 | |
| 848 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
| 849 if (loader.is_null()) { | |
| 850 return; | |
| 851 } | |
| 852 | |
| 853 // check whether the current caller thread holds the lock or not. | |
| 854 // If not, increment the corresponding counter | |
| 855 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
| 856 ObjectSynchronizer::owner_self) { | |
| 857 counter->inc(); | |
| 858 } | |
| 859 } | |
| 860 | |
| 861 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
|
973
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
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parents:
878
diff
changeset
|
862 // and JVM_DefineClassWithSourceCond() |
|
ad6585fd4087
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changeset
|
863 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
|
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
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878
diff
changeset
|
864 jobject loader, const jbyte *buf, |
|
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diff
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|
865 jsize len, jobject pd, const char *source, |
|
ad6585fd4087
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diff
changeset
|
866 jboolean verify, TRAPS) { |
|
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
388
diff
changeset
|
867 if (source == NULL) source = "__JVM_DefineClass__"; |
| 0 | 868 |
|
875
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|
869 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
|
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diff
changeset
|
870 JavaThread* jt = (JavaThread*) THREAD; |
|
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diff
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|
871 |
|
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parents:
726
diff
changeset
|
872 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
|
6a93908f268f
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diff
changeset
|
873 ClassLoader::perf_define_appclass_selftime(), |
|
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diff
changeset
|
874 ClassLoader::perf_define_appclasses(), |
|
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726
diff
changeset
|
875 jt->get_thread_stat()->perf_recursion_counts_addr(), |
|
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726
diff
changeset
|
876 jt->get_thread_stat()->perf_timers_addr(), |
|
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mchung
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726
diff
changeset
|
877 PerfClassTraceTime::DEFINE_CLASS); |
|
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mchung
parents:
726
diff
changeset
|
878 |
|
6a93908f268f
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mchung
parents:
726
diff
changeset
|
879 if (UsePerfData) { |
|
6a93908f268f
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mchung
parents:
726
diff
changeset
|
880 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
|
6a93908f268f
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mchung
parents:
726
diff
changeset
|
881 } |
|
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|
882 |
| 0 | 883 // Since exceptions can be thrown, class initialization can take place |
| 884 // if name is NULL no check for class name in .class stream has to be made. | |
|
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|
885 TempNewSymbol class_name = NULL; |
| 0 | 886 if (name != NULL) { |
| 887 const int str_len = (int)strlen(name); | |
|
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|
888 if (str_len > Symbol::max_length()) { |
| 0 | 889 // It's impossible to create this class; the name cannot fit |
| 890 // into the constant pool. | |
| 891 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 892 } | |
|
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|
893 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
| 0 | 894 } |
| 895 | |
| 896 ResourceMark rm(THREAD); | |
| 897 ClassFileStream st((u1*) buf, len, (char *)source); | |
| 898 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
| 899 if (UsePerfData) { | |
| 900 is_lock_held_by_thread(class_loader, | |
| 901 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
| 902 THREAD); | |
| 903 } | |
| 904 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
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905 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, |
| 0 | 906 protection_domain, &st, |
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907 verify != 0, |
| 0 | 908 CHECK_NULL); |
| 909 | |
| 910 if (TraceClassResolution && k != NULL) { | |
| 911 trace_class_resolution(k); | |
| 912 } | |
| 913 | |
| 6983 | 914 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
| 0 | 915 } |
| 916 | |
| 917 | |
| 918 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
| 919 JVMWrapper2("JVM_DefineClass %s", name); | |
| 920 | |
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921 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
| 0 | 922 JVM_END |
| 923 | |
| 924 | |
| 925 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
| 926 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
| 927 | |
|
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928 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
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929 JVM_END |
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930 |
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931 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
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932 jobject loader, const jbyte *buf, |
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933 jsize len, jobject pd, |
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934 const char *source, jboolean verify)) |
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935 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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936 |
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937 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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938 JVM_END |
| 0 | 939 |
| 940 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
| 941 JVMWrapper("JVM_FindLoadedClass"); | |
| 942 ResourceMark rm(THREAD); | |
| 943 | |
| 944 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 945 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
| 946 | |
| 947 const char* str = java_lang_String::as_utf8_string(string()); | |
| 948 // Sanity check, don't expect null | |
| 949 if (str == NULL) return NULL; | |
| 950 | |
| 951 const int str_len = (int)strlen(str); | |
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952 if (str_len > Symbol::max_length()) { |
| 0 | 953 // It's impossible to create this class; the name cannot fit |
| 954 // into the constant pool. | |
| 955 return NULL; | |
| 956 } | |
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957 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
| 0 | 958 |
| 959 // Security Note: | |
| 960 // The Java level wrapper will perform the necessary security check allowing | |
| 961 // us to pass the NULL as the initiating class loader. | |
| 962 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
| 963 if (UsePerfData) { | |
| 964 is_lock_held_by_thread(h_loader, | |
| 965 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
| 966 THREAD); | |
| 967 } | |
| 968 | |
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969 Klass* k = SystemDictionary::find_instance_or_array_klass(klass_name, |
| 0 | 970 h_loader, |
| 971 Handle(), | |
| 972 CHECK_NULL); | |
| 973 | |
| 974 return (k == NULL) ? NULL : | |
| 6983 | 975 (jclass) JNIHandles::make_local(env, k->java_mirror()); |
| 0 | 976 JVM_END |
| 977 | |
| 978 | |
| 979 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
| 980 | |
| 981 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
| 982 assert (cls != NULL, "illegal class"); | |
| 983 JVMWrapper("JVM_GetClassName"); | |
| 984 JvmtiVMObjectAllocEventCollector oam; | |
| 985 ResourceMark rm(THREAD); | |
| 986 const char* name; | |
| 987 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 988 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
| 989 } else { | |
| 990 // Consider caching interned string in Klass | |
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991 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 0 | 992 assert(k->is_klass(), "just checking"); |
| 6983 | 993 name = k->external_name(); |
| 0 | 994 } |
| 995 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
| 996 return (jstring) JNIHandles::make_local(env, result); | |
| 997 JVM_END | |
| 998 | |
| 999 | |
| 1000 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
| 1001 JVMWrapper("JVM_GetClassInterfaces"); | |
| 1002 JvmtiVMObjectAllocEventCollector oam; | |
| 1003 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1004 | |
| 1005 // Special handling for primitive objects | |
| 1006 if (java_lang_Class::is_primitive(mirror)) { | |
| 1007 // Primitive objects does not have any interfaces | |
| 1142 | 1008 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1009 return (jobjectArray) JNIHandles::make_local(env, r); |
| 1010 } | |
| 1011 | |
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1012 KlassHandle klass(thread, java_lang_Class::as_Klass(mirror)); |
| 0 | 1013 // Figure size of result array |
| 1014 int size; | |
| 1015 if (klass->oop_is_instance()) { | |
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1016 size = InstanceKlass::cast(klass())->local_interfaces()->length(); |
| 0 | 1017 } else { |
| 1018 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
| 1019 size = 2; | |
| 1020 } | |
| 1021 | |
| 1022 // Allocate result array | |
| 1142 | 1023 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
| 0 | 1024 objArrayHandle result (THREAD, r); |
| 1025 // Fill in result | |
| 1026 if (klass->oop_is_instance()) { | |
| 1027 // Regular instance klass, fill in all local interfaces | |
| 1028 for (int index = 0; index < size; index++) { | |
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1029 Klass* k = InstanceKlass::cast(klass())->local_interfaces()->at(index); |
| 6983 | 1030 result->obj_at_put(index, k->java_mirror()); |
| 0 | 1031 } |
| 1032 } else { | |
| 1033 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
| 6983 | 1034 result->obj_at_put(0, SystemDictionary::Cloneable_klass()->java_mirror()); |
| 1035 result->obj_at_put(1, SystemDictionary::Serializable_klass()->java_mirror()); | |
| 0 | 1036 } |
| 1037 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1038 JVM_END | |
| 1039 | |
| 1040 | |
| 1041 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
| 1042 JVMWrapper("JVM_GetClassLoader"); | |
| 1043 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1044 return NULL; | |
| 1045 } | |
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1046 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1047 oop loader = k->class_loader(); |
| 0 | 1048 return JNIHandles::make_local(env, loader); |
| 1049 JVM_END | |
| 1050 | |
| 1051 | |
| 1052 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
| 1053 JVMWrapper("JVM_IsInterface"); | |
| 1054 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1055 if (java_lang_Class::is_primitive(mirror)) { | |
| 1056 return JNI_FALSE; | |
| 1057 } | |
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1058 Klass* k = java_lang_Class::as_Klass(mirror); |
| 6983 | 1059 jboolean result = k->is_interface(); |
| 1060 assert(!result || k->oop_is_instance(), | |
| 0 | 1061 "all interfaces are instance types"); |
| 1062 // The compiler intrinsic for isInterface tests the | |
| 1063 // Klass::_access_flags bits in the same way. | |
| 1064 return result; | |
| 1065 JVM_END | |
| 1066 | |
| 1067 | |
| 1068 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
| 1069 JVMWrapper("JVM_GetClassSigners"); | |
| 1070 JvmtiVMObjectAllocEventCollector oam; | |
| 1071 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1072 // There are no signers for primitive types | |
| 1073 return NULL; | |
| 1074 } | |
| 1075 | |
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1076 objArrayOop signers = java_lang_Class::signers(JNIHandles::resolve_non_null(cls)); |
| 0 | 1077 |
| 1078 // If there are no signers set in the class, or if the class | |
| 1079 // is an array, return NULL. | |
| 1080 if (signers == NULL) return NULL; | |
| 1081 | |
| 1082 // copy of the signers array | |
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1083 Klass* element = ObjArrayKlass::cast(signers->klass())->element_klass(); |
| 0 | 1084 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); |
| 1085 for (int index = 0; index < signers->length(); index++) { | |
| 1086 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
| 1087 } | |
| 1088 | |
| 1089 // return the copy | |
| 1090 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
| 1091 JVM_END | |
| 1092 | |
| 1093 | |
| 1094 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
| 1095 JVMWrapper("JVM_SetClassSigners"); | |
| 1096 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1097 // This call is ignored for primitive types and arrays. | |
| 1098 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
| 1099 // be called with an array. Only the bootstrap loader creates arrays. | |
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1100 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1101 if (k->oop_is_instance()) { |
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1102 java_lang_Class::set_signers(k->java_mirror(), objArrayOop(JNIHandles::resolve(signers))); |
| 0 | 1103 } |
| 1104 } | |
| 1105 JVM_END | |
| 1106 | |
| 1107 | |
| 1108 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
| 1109 JVMWrapper("JVM_GetProtectionDomain"); | |
| 1110 if (JNIHandles::resolve(cls) == NULL) { | |
| 1111 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
| 1112 } | |
| 1113 | |
| 1114 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1115 // Primitive types does not have a protection domain. | |
| 1116 return NULL; | |
| 1117 } | |
| 1118 | |
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1119 oop pd = java_lang_Class::protection_domain(JNIHandles::resolve(cls)); |
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1120 return (jobject) JNIHandles::make_local(env, pd); |
| 0 | 1121 JVM_END |
| 1122 | |
| 1123 | |
| 11010 | 1124 static bool is_authorized(Handle context, instanceKlassHandle klass, TRAPS) { |
| 1125 // If there is a security manager and protection domain, check the access | |
| 1126 // in the protection domain, otherwise it is authorized. | |
| 1127 if (java_lang_System::has_security_manager()) { | |
| 1128 | |
| 1129 // For bootstrapping, if pd implies method isn't in the JDK, allow | |
| 1130 // this context to revert to older behavior. | |
| 1131 // In this case the isAuthorized field in AccessControlContext is also not | |
| 1132 // present. | |
| 1133 if (Universe::protection_domain_implies_method() == NULL) { | |
| 1134 return true; | |
| 1135 } | |
| 1136 | |
| 1137 // Whitelist certain access control contexts | |
| 1138 if (java_security_AccessControlContext::is_authorized(context)) { | |
| 1139 return true; | |
| 1140 } | |
| 1141 | |
| 1142 oop prot = klass->protection_domain(); | |
| 1143 if (prot != NULL) { | |
| 1144 // Call pd.implies(new SecurityPermission("createAccessControlContext")) | |
| 1145 // in the new wrapper. | |
| 1146 methodHandle m(THREAD, Universe::protection_domain_implies_method()); | |
| 1147 Handle h_prot(THREAD, prot); | |
| 1148 JavaValue result(T_BOOLEAN); | |
| 1149 JavaCallArguments args(h_prot); | |
| 1150 JavaCalls::call(&result, m, &args, CHECK_false); | |
| 1151 return (result.get_jboolean() != 0); | |
| 1152 } | |
| 1153 } | |
| 1154 return true; | |
| 1155 } | |
| 1156 | |
| 1157 // Create an AccessControlContext with a protection domain with null codesource | |
| 1158 // and null permissions - which gives no permissions. | |
| 1159 oop create_dummy_access_control_context(TRAPS) { | |
| 1160 InstanceKlass* pd_klass = InstanceKlass::cast(SystemDictionary::ProtectionDomain_klass()); | |
| 1161 // new ProtectionDomain(null,null); | |
| 1162 oop null_protection_domain = pd_klass->allocate_instance(CHECK_NULL); | |
| 1163 Handle null_pd(THREAD, null_protection_domain); | |
| 1164 | |
| 1165 // new ProtectionDomain[] {pd}; | |
| 1166 objArrayOop context = oopFactory::new_objArray(pd_klass, 1, CHECK_NULL); | |
| 1167 context->obj_at_put(0, null_pd()); | |
| 1168 | |
| 1169 // new AccessControlContext(new ProtectionDomain[] {pd}) | |
| 1170 objArrayHandle h_context(THREAD, context); | |
| 1171 oop result = java_security_AccessControlContext::create(h_context, false, Handle(), CHECK_NULL); | |
| 1172 return result; | |
| 1173 } | |
| 0 | 1174 |
| 1175 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
| 1176 JVMWrapper("JVM_DoPrivileged"); | |
| 1177 | |
| 1178 if (action == NULL) { | |
| 1179 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
| 1180 } | |
| 1181 | |
| 11010 | 1182 // Compute the frame initiating the do privileged operation and setup the privileged stack |
| 1183 vframeStream vfst(thread); | |
| 1184 vfst.security_get_caller_frame(1); | |
| 1185 | |
| 1186 if (vfst.at_end()) { | |
| 1187 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "no caller?"); | |
| 1188 } | |
| 1189 | |
| 1190 Method* method = vfst.method(); | |
| 1191 instanceKlassHandle klass (THREAD, method->method_holder()); | |
| 1192 | |
| 1193 // Check that action object understands "Object run()" | |
| 1194 Handle h_context; | |
| 1195 if (context != NULL) { | |
| 1196 h_context = Handle(THREAD, JNIHandles::resolve(context)); | |
| 1197 bool authorized = is_authorized(h_context, klass, CHECK_NULL); | |
| 1198 if (!authorized) { | |
| 1199 // Create an unprivileged access control object and call it's run function | |
| 1200 // instead. | |
| 1201 oop noprivs = create_dummy_access_control_context(CHECK_NULL); | |
| 1202 h_context = Handle(THREAD, noprivs); | |
| 1203 } | |
| 1204 } | |
| 0 | 1205 |
| 1206 // Check that action object understands "Object run()" | |
| 1207 Handle object (THREAD, JNIHandles::resolve(action)); | |
| 1208 | |
| 1209 // get run() method | |
| 6983 | 1210 Method* m_oop = object->klass()->uncached_lookup_method( |
| 0 | 1211 vmSymbols::run_method_name(), |
| 1212 vmSymbols::void_object_signature()); | |
| 1213 methodHandle m (THREAD, m_oop); | |
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1214 if (m.is_null() || !m->is_method() || !m()->is_public() || m()->is_static()) { |
| 0 | 1215 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); |
| 1216 } | |
| 1217 | |
| 11010 | 1218 // Stack allocated list of privileged stack elements |
| 1219 PrivilegedElement pi; | |
| 0 | 1220 if (!vfst.at_end()) { |
| 11010 | 1221 pi.initialize(&vfst, h_context(), thread->privileged_stack_top(), CHECK_NULL); |
| 0 | 1222 thread->set_privileged_stack_top(&pi); |
| 1223 } | |
| 1224 | |
| 1225 | |
| 1226 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
| 1227 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
| 1228 Handle pending_exception; | |
| 1229 JavaValue result(T_OBJECT); | |
| 1230 JavaCallArguments args(object); | |
| 1231 JavaCalls::call(&result, m, &args, THREAD); | |
| 1232 | |
| 1233 // done with action, remove ourselves from the list | |
| 1234 if (!vfst.at_end()) { | |
| 1235 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
| 1236 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
| 1237 } | |
| 1238 | |
| 1239 if (HAS_PENDING_EXCEPTION) { | |
| 1240 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
| 1241 CLEAR_PENDING_EXCEPTION; | |
| 1242 | |
| 1142 | 1243 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
| 1244 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
| 0 | 1245 // Throw a java.security.PrivilegedActionException(Exception e) exception |
| 1246 JavaCallArguments args(pending_exception); | |
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1247 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1248 vmSymbols::exception_void_signature(), |
| 0 | 1249 &args); |
| 1250 } | |
| 1251 } | |
| 1252 | |
| 1253 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
| 1254 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
| 1255 JVM_END | |
| 1256 | |
| 1257 | |
| 1258 // Returns the inherited_access_control_context field of the running thread. | |
| 1259 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1260 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
| 1261 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
| 1262 return JNIHandles::make_local(env, result); | |
| 1263 JVM_END | |
| 1264 | |
| 1265 class RegisterArrayForGC { | |
| 1266 private: | |
| 1267 JavaThread *_thread; | |
| 1268 public: | |
| 1269 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
| 1270 _thread = thread; | |
| 1271 _thread->register_array_for_gc(array); | |
| 1272 } | |
| 1273 | |
| 1274 ~RegisterArrayForGC() { | |
| 1275 _thread->register_array_for_gc(NULL); | |
| 1276 } | |
| 1277 }; | |
| 1278 | |
| 1279 | |
| 1280 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1281 JVMWrapper("JVM_GetStackAccessControlContext"); | |
| 1282 if (!UsePrivilegedStack) return NULL; | |
| 1283 | |
| 1284 ResourceMark rm(THREAD); | |
| 1285 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
| 1286 JvmtiVMObjectAllocEventCollector oam; | |
| 1287 | |
| 1288 // count the protection domains on the execution stack. We collapse | |
| 1289 // duplicate consecutive protection domains into a single one, as | |
| 1290 // well as stopping when we hit a privileged frame. | |
| 1291 | |
| 1292 // Use vframeStream to iterate through Java frames | |
| 1293 vframeStream vfst(thread); | |
| 1294 | |
| 1295 oop previous_protection_domain = NULL; | |
| 1296 Handle privileged_context(thread, NULL); | |
| 1297 bool is_privileged = false; | |
| 1298 oop protection_domain = NULL; | |
| 1299 | |
| 1300 for(; !vfst.at_end(); vfst.next()) { | |
| 1301 // get method of frame | |
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1302 Method* method = vfst.method(); |
| 0 | 1303 intptr_t* frame_id = vfst.frame_id(); |
| 1304 | |
| 1305 // check the privileged frames to see if we have a match | |
| 1306 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
| 1307 // this frame is privileged | |
| 1308 is_privileged = true; | |
| 1309 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
| 1310 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
| 1311 } else { | |
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1312 protection_domain = method->method_holder()->protection_domain(); |
| 0 | 1313 } |
| 1314 | |
| 1315 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
| 1316 local_array->push(protection_domain); | |
| 1317 previous_protection_domain = protection_domain; | |
| 1318 } | |
| 1319 | |
| 1320 if (is_privileged) break; | |
| 1321 } | |
| 1322 | |
| 1323 | |
| 1324 // either all the domains on the stack were system domains, or | |
| 1325 // we had a privileged system domain | |
| 1326 if (local_array->is_empty()) { | |
| 1327 if (is_privileged && privileged_context.is_null()) return NULL; | |
| 1328 | |
| 1329 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
| 1330 return JNIHandles::make_local(env, result); | |
| 1331 } | |
| 1332 | |
| 1333 // the resource area must be registered in case of a gc | |
| 1334 RegisterArrayForGC ragc(thread, local_array); | |
| 1142 | 1335 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
| 0 | 1336 local_array->length(), CHECK_NULL); |
| 1337 objArrayHandle h_context(thread, context); | |
| 1338 for (int index = 0; index < local_array->length(); index++) { | |
| 1339 h_context->obj_at_put(index, local_array->at(index)); | |
| 1340 } | |
| 1341 | |
| 1342 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
| 1343 | |
| 1344 return JNIHandles::make_local(env, result); | |
| 1345 JVM_END | |
| 1346 | |
| 1347 | |
| 1348 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
| 1349 JVMWrapper("JVM_IsArrayClass"); | |
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1350 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1351 return (k != NULL) && k->oop_is_array() ? true : false; |
| 0 | 1352 JVM_END |
| 1353 | |
| 1354 | |
| 1355 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
| 1356 JVMWrapper("JVM_IsPrimitiveClass"); | |
| 1357 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1358 return (jboolean) java_lang_Class::is_primitive(mirror); | |
| 1359 JVM_END | |
| 1360 | |
| 1361 | |
| 1362 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
| 1363 JVMWrapper("JVM_GetComponentType"); | |
| 1364 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1365 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
| 1366 return (jclass) JNIHandles::make_local(env, result); | |
| 1367 JVM_END | |
| 1368 | |
| 1369 | |
| 1370 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
| 1371 JVMWrapper("JVM_GetClassModifiers"); | |
| 1372 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1373 // Primitive type | |
| 1374 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 1375 } | |
| 1376 | |
| 6983 | 1377 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 1378 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); |
| 1379 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
| 1380 return k->modifier_flags(); | |
| 1381 JVM_END | |
| 1382 | |
| 1383 | |
| 1384 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
| 1385 | |
| 1386 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
| 1387 JvmtiVMObjectAllocEventCollector oam; | |
| 1388 // ofClass is a reference to a java_lang_Class object. The mirror object | |
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1389 // of an InstanceKlass |
| 0 | 1390 |
| 1391 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1392 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
| 1142 | 1393 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1394 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1395 } | |
| 1396 | |
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1397 instanceKlassHandle k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
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1398 InnerClassesIterator iter(k); |
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1399 |
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1400 if (iter.length() == 0) { |
| 0 | 1401 // Neither an inner nor outer class |
| 1142 | 1402 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1403 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1404 } | |
| 1405 | |
| 1406 // find inner class info | |
| 1407 constantPoolHandle cp(thread, k->constants()); | |
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1408 int length = iter.length(); |
| 0 | 1409 |
| 1410 // Allocate temp. result array | |
| 1142 | 1411 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
| 0 | 1412 objArrayHandle result (THREAD, r); |
| 1413 int members = 0; | |
| 1414 | |
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1415 for (; !iter.done(); iter.next()) { |
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1416 int ioff = iter.inner_class_info_index(); |
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1417 int ooff = iter.outer_class_info_index(); |
| 0 | 1418 |
| 1419 if (ioff != 0 && ooff != 0) { | |
| 1420 // Check to see if the name matches the class we're looking for | |
| 1421 // before attempting to find the class. | |
| 1422 if (cp->klass_name_at_matches(k, ooff)) { | |
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1423 Klass* outer_klass = cp->klass_at(ooff, CHECK_NULL); |
| 0 | 1424 if (outer_klass == k()) { |
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1425 Klass* ik = cp->klass_at(ioff, CHECK_NULL); |
| 0 | 1426 instanceKlassHandle inner_klass (THREAD, ik); |
| 1427 | |
| 1428 // Throws an exception if outer klass has not declared k as | |
| 1429 // an inner klass | |
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1430 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
| 0 | 1431 |
| 1432 result->obj_at_put(members, inner_klass->java_mirror()); | |
| 1433 members++; | |
| 1434 } | |
| 1435 } | |
| 1436 } | |
| 1437 } | |
| 1438 | |
| 1439 if (members != length) { | |
| 1440 // Return array of right length | |
| 1142 | 1441 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
| 0 | 1442 for(int i = 0; i < members; i++) { |
| 1443 res->obj_at_put(i, result->obj_at(i)); | |
| 1444 } | |
| 1445 return (jobjectArray)JNIHandles::make_local(env, res); | |
| 1446 } | |
| 1447 | |
| 1448 return (jobjectArray)JNIHandles::make_local(env, result()); | |
| 1449 JVM_END | |
| 1450 | |
| 1451 | |
| 1452 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
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1453 { |
| 0 | 1454 // ofClass is a reference to a java_lang_Class object. |
| 1455 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1456 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
| 0 | 1457 return NULL; |
| 1458 } | |
| 1459 | |
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1460 bool inner_is_member = false; |
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1461 Klass* outer_klass |
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1462 = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)) |
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1463 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
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1464 if (outer_klass == NULL) return NULL; // already a top-level class |
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1465 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
| 6983 | 1466 return (jclass) JNIHandles::make_local(env, outer_klass->java_mirror()); |
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1467 } |
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1468 JVM_END |
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1469 |
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1470 // should be in InstanceKlass.cpp, but is here for historical reasons |
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1471 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
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1472 bool* inner_is_member, |
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1473 TRAPS) { |
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1474 Thread* thread = THREAD; |
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1475 InnerClassesIterator iter(k); |
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1476 if (iter.length() == 0) { |
| 0 | 1477 // No inner class info => no declaring class |
| 1478 return NULL; | |
| 1479 } | |
| 1480 | |
| 1481 constantPoolHandle i_cp(thread, k->constants()); | |
| 1482 | |
| 1483 bool found = false; | |
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1484 Klass* ok; |
| 0 | 1485 instanceKlassHandle outer_klass; |
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1486 *inner_is_member = false; |
| 0 | 1487 |
| 1488 // Find inner_klass attribute | |
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1489 for (; !iter.done() && !found; iter.next()) { |
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1490 int ioff = iter.inner_class_info_index(); |
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1491 int ooff = iter.outer_class_info_index(); |
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1492 int noff = iter.inner_name_index(); |
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1493 if (ioff != 0) { |
| 0 | 1494 // Check to see if the name matches the class we're looking for |
| 1495 // before attempting to find the class. | |
| 1496 if (i_cp->klass_name_at_matches(k, ioff)) { | |
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1497 Klass* inner_klass = i_cp->klass_at(ioff, CHECK_NULL); |
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1498 found = (k() == inner_klass); |
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1499 if (found && ooff != 0) { |
| 0 | 1500 ok = i_cp->klass_at(ooff, CHECK_NULL); |
| 1501 outer_klass = instanceKlassHandle(thread, ok); | |
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1502 *inner_is_member = true; |
| 0 | 1503 } |
| 1504 } | |
| 1505 } | |
| 1506 } | |
| 1507 | |
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1508 if (found && outer_klass.is_null()) { |
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1509 // It may be anonymous; try for that. |
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1510 int encl_method_class_idx = k->enclosing_method_class_index(); |
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1511 if (encl_method_class_idx != 0) { |
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1512 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
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1513 outer_klass = instanceKlassHandle(thread, ok); |
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1514 *inner_is_member = false; |
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1515 } |
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1516 } |
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1517 |
| 0 | 1518 // If no inner class attribute found for this class. |
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1519 if (outer_klass.is_null()) return NULL; |
| 0 | 1520 |
| 1521 // Throws an exception if outer klass has not declared k as an inner klass | |
|
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1522 // We need evidence that each klass knows about the other, or else |
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1523 // the system could allow a spoof of an inner class to gain access rights. |
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1524 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
|
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1525 return outer_klass(); |
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1526 } |
| 0 | 1527 |
| 1528 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
| 1529 assert (cls != NULL, "illegal class"); | |
| 1530 JVMWrapper("JVM_GetClassSignature"); | |
| 1531 JvmtiVMObjectAllocEventCollector oam; | |
| 1532 ResourceMark rm(THREAD); | |
| 1533 // Return null for arrays and primatives | |
| 1534 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1535 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 6983 | 1536 if (k->oop_is_instance()) { |
|
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1537 Symbol* sym = InstanceKlass::cast(k)->generic_signature(); |
|
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1538 if (sym == NULL) return NULL; |
| 0 | 1539 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 1540 return (jstring) JNIHandles::make_local(env, str()); | |
| 1541 } | |
| 1542 } | |
| 1543 return NULL; | |
| 1544 JVM_END | |
| 1545 | |
| 1546 | |
| 1547 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
| 1548 assert (cls != NULL, "illegal class"); | |
| 1549 JVMWrapper("JVM_GetClassAnnotations"); | |
|
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1550 |
| 0 | 1551 // Return null for arrays and primitives |
| 1552 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
|
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1553 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 6983 | 1554 if (k->oop_is_instance()) { |
|
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1555 typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->class_annotations(), CHECK_NULL); |
|
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1556 return (jbyteArray) JNIHandles::make_local(env, a); |
| 0 | 1557 } |
| 1558 } | |
| 1559 return NULL; | |
| 1560 JVM_END | |
| 1561 | |
| 1562 | |
|
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1563 static bool jvm_get_field_common(jobject field, fieldDescriptor& fd, TRAPS) { |
| 0 | 1564 // some of this code was adapted from from jni_FromReflectedField |
| 1565 | |
| 1566 oop reflected = JNIHandles::resolve_non_null(field); | |
| 1567 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
|
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1568 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 1569 int slot = java_lang_reflect_Field::slot(reflected); |
| 1570 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
| 1571 | |
| 1572 KlassHandle kh(THREAD, k); | |
|
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1573 intptr_t offset = InstanceKlass::cast(kh())->field_offset(slot); |
| 0 | 1574 |
| 1575 if (modifiers & JVM_ACC_STATIC) { | |
| 1576 // for static fields we only look in the current class | |
|
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1577 if (!InstanceKlass::cast(kh())->find_local_field_from_offset(offset, true, &fd)) { |
| 0 | 1578 assert(false, "cannot find static field"); |
|
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1579 return false; |
| 0 | 1580 } |
| 1581 } else { | |
| 1582 // for instance fields we start with the current class and work | |
| 1583 // our way up through the superclass chain | |
|
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1584 if (!InstanceKlass::cast(kh())->find_field_from_offset(offset, false, &fd)) { |
| 0 | 1585 assert(false, "cannot find instance field"); |
|
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|
1586 return false; |
| 0 | 1587 } |
| 1588 } | |
|
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|
1589 return true; |
|
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|
1590 } |
|
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|
1591 |
|
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|
1592 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) |
|
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1593 // field is a handle to a java.lang.reflect.Field object |
|
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|
1594 assert(field != NULL, "illegal field"); |
|
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|
1595 JVMWrapper("JVM_GetFieldAnnotations"); |
|
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|
1596 |
|
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|
1597 fieldDescriptor fd; |
|
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|
1598 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
|
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|
1599 if (!gotFd) { |
|
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|
1600 return NULL; |
|
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|
1601 } |
| 0 | 1602 |
|
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1603 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.annotations(), THREAD)); |
| 0 | 1604 JVM_END |
| 1605 | |
| 1606 | |
|
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|
1607 static Method* jvm_get_method_common(jobject method) { |
| 0 | 1608 // some of this code was adapted from from jni_FromReflectedMethod |
| 1609 | |
| 1610 oop reflected = JNIHandles::resolve_non_null(method); | |
| 1611 oop mirror = NULL; | |
| 1612 int slot = 0; | |
| 1613 | |
| 1142 | 1614 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
| 0 | 1615 mirror = java_lang_reflect_Constructor::clazz(reflected); |
| 1616 slot = java_lang_reflect_Constructor::slot(reflected); | |
| 1617 } else { | |
| 1142 | 1618 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
| 0 | 1619 "wrong type"); |
| 1620 mirror = java_lang_reflect_Method::clazz(reflected); | |
| 1621 slot = java_lang_reflect_Method::slot(reflected); | |
| 1622 } | |
|
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1623 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 1624 |
|
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|
1625 Method* m = InstanceKlass::cast(k)->method_with_idnum(slot); |
|
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|
1626 assert(m != NULL, "cannot find method"); |
|
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|
1627 return m; // caller has to deal with NULL in product mode |
| 0 | 1628 } |
| 1629 | |
| 1630 | |
| 1631 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
| 1632 JVMWrapper("JVM_GetMethodAnnotations"); | |
| 1633 | |
| 1634 // method is a handle to a java.lang.reflect.Method object | |
|
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|
1635 Method* m = jvm_get_method_common(method); |
|
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|
1636 if (m == NULL) { |
|
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|
1637 return NULL; |
|
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|
1638 } |
|
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|
1639 |
|
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1640 return (jbyteArray) JNIHandles::make_local(env, |
|
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|
1641 Annotations::make_java_array(m->annotations(), THREAD)); |
| 0 | 1642 JVM_END |
| 1643 | |
| 1644 | |
| 1645 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
| 1646 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
| 1647 | |
| 1648 // method is a handle to a java.lang.reflect.Method object | |
|
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|
1649 Method* m = jvm_get_method_common(method); |
|
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|
1650 if (m == NULL) { |
|
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|
1651 return NULL; |
|
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|
1652 } |
|
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|
1653 |
|
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|
1654 return (jbyteArray) JNIHandles::make_local(env, |
|
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|
1655 Annotations::make_java_array(m->annotation_default(), THREAD)); |
| 0 | 1656 JVM_END |
| 1657 | |
| 1658 | |
| 1659 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
| 1660 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
| 1661 | |
| 1662 // method is a handle to a java.lang.reflect.Method object | |
|
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|
1663 Method* m = jvm_get_method_common(method); |
|
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|
1664 if (m == NULL) { |
|
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|
1665 return NULL; |
|
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|
1666 } |
|
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|
1667 |
|
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|
1668 return (jbyteArray) JNIHandles::make_local(env, |
|
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|
1669 Annotations::make_java_array(m->parameter_annotations(), THREAD)); |
| 0 | 1670 JVM_END |
| 1671 | |
|
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|
1672 /* Type use annotations support (JDK 1.8) */ |
|
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|
1673 |
|
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|
1674 JVM_ENTRY(jbyteArray, JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls)) |
|
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|
1675 assert (cls != NULL, "illegal class"); |
|
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|
1676 JVMWrapper("JVM_GetClassTypeAnnotations"); |
|
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|
1677 ResourceMark rm(THREAD); |
|
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|
1678 // Return null for arrays and primitives |
|
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|
1679 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
|
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|
1680 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
|
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|
1681 if (k->oop_is_instance()) { |
| 8031 | 1682 AnnotationArray* type_annotations = InstanceKlass::cast(k)->class_type_annotations(); |
|
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|
1683 if (type_annotations != NULL) { |
| 8031 | 1684 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
|
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|
1685 return (jbyteArray) JNIHandles::make_local(env, a); |
|
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|
1686 } |
|
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|
1687 } |
|
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|
1688 } |
|
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|
1689 return NULL; |
|
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|
1690 JVM_END |
|
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|
1691 |
|
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|
1692 JVM_ENTRY(jbyteArray, JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method)) |
|
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|
1693 assert (method != NULL, "illegal method"); |
|
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|
1694 JVMWrapper("JVM_GetMethodTypeAnnotations"); |
|
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|
1695 |
|
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|
1696 // method is a handle to a java.lang.reflect.Method object |
|
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|
1697 Method* m = jvm_get_method_common(method); |
|
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|
1698 if (m == NULL) { |
|
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|
1699 return NULL; |
|
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|
1700 } |
|
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|
1701 |
|
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|
1702 AnnotationArray* type_annotations = m->type_annotations(); |
|
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|
1703 if (type_annotations != NULL) { |
|
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|
1704 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
|
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|
1705 return (jbyteArray) JNIHandles::make_local(env, a); |
|
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|
1706 } |
|
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|
1707 |
|
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|
1708 return NULL; |
|
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|
1709 JVM_END |
|
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|
1710 |
|
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|
1711 JVM_ENTRY(jbyteArray, JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field)) |
|
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|
1712 assert (field != NULL, "illegal field"); |
|
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|
1713 JVMWrapper("JVM_GetFieldTypeAnnotations"); |
|
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|
1714 |
|
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|
1715 fieldDescriptor fd; |
|
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|
1716 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
|
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|
1717 if (!gotFd) { |
|
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|
1718 return NULL; |
|
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|
1719 } |
|
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|
1720 |
|
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1721 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.type_annotations(), THREAD)); |
|
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1722 JVM_END |
|
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1723 |
|
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1724 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { |
|
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1725 if (!cp->is_within_bounds(index)) { |
|
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1726 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); |
|
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1727 } |
|
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1728 } |
|
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1729 |
|
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1730 JVM_ENTRY(jobjectArray, JVM_GetMethodParameters(JNIEnv *env, jobject method)) |
|
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|
1731 { |
|
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|
1732 JVMWrapper("JVM_GetMethodParameters"); |
|
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|
1733 // method is a handle to a java.lang.reflect.Method object |
|
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|
1734 Method* method_ptr = jvm_get_method_common(method); |
|
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1735 methodHandle mh (THREAD, method_ptr); |
|
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|
1736 Handle reflected_method (THREAD, JNIHandles::resolve_non_null(method)); |
|
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1737 const int num_params = mh->method_parameters_length(); |
|
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1738 |
|
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1739 if (0 != num_params) { |
|
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1740 // make sure all the symbols are properly formatted |
|
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1741 for (int i = 0; i < num_params; i++) { |
|
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1742 MethodParametersElement* params = mh->method_parameters_start(); |
|
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1743 int index = params[i].name_cp_index; |
|
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1744 bounds_check(mh->constants(), index, CHECK_NULL); |
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1745 |
|
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1746 if (0 != index && !mh->constants()->tag_at(index).is_utf8()) { |
|
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1747 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), |
|
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1748 "Wrong type at constant pool index"); |
|
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|
1749 } |
|
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1750 |
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1751 } |
|
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1752 |
|
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1753 objArrayOop result_oop = oopFactory::new_objArray(SystemDictionary::reflect_Parameter_klass(), num_params, CHECK_NULL); |
|
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1754 objArrayHandle result (THREAD, result_oop); |
|
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1755 |
|
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1756 for (int i = 0; i < num_params; i++) { |
|
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1757 MethodParametersElement* params = mh->method_parameters_start(); |
|
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1758 // For a 0 index, give a NULL symbol |
|
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1759 Symbol* sym = 0 != params[i].name_cp_index ? |
|
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1760 mh->constants()->symbol_at(params[i].name_cp_index) : NULL; |
|
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1761 int flags = params[i].flags; |
|
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1762 oop param = Reflection::new_parameter(reflected_method, i, sym, |
|
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1763 flags, CHECK_NULL); |
|
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|
1764 result->obj_at_put(i, param); |
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|
1765 } |
|
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1766 return (jobjectArray)JNIHandles::make_local(env, result()); |
|
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1767 } else { |
|
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|
1768 return (jobjectArray)NULL; |
|
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|
1769 } |
|
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|
1770 } |
|
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|
1771 JVM_END |
| 0 | 1772 |
| 1773 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
| 1774 | |
| 1775 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1776 { | |
| 1777 JVMWrapper("JVM_GetClassDeclaredFields"); | |
| 1778 JvmtiVMObjectAllocEventCollector oam; | |
| 1779 | |
| 1780 // Exclude primitive types and array types | |
| 1781 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1782 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
| 0 | 1783 // Return empty array |
| 1142 | 1784 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
| 0 | 1785 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1786 } | |
| 1787 | |
|
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1788 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
| 0 | 1789 constantPoolHandle cp(THREAD, k->constants()); |
| 1790 | |
| 1791 // Ensure class is linked | |
| 1792 k->link_class(CHECK_NULL); | |
| 1793 | |
| 1794 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
| 1795 bool skip_backtrace = false; | |
| 1796 | |
| 1797 // Allocate result | |
| 1798 int num_fields; | |
| 1799 | |
| 1800 if (publicOnly) { | |
| 1801 num_fields = 0; | |
| 3938 | 1802 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
| 1803 if (fs.access_flags().is_public()) ++num_fields; | |
| 0 | 1804 } |
| 1805 } else { | |
| 3938 | 1806 num_fields = k->java_fields_count(); |
| 0 | 1807 |
| 1142 | 1808 if (k() == SystemDictionary::Throwable_klass()) { |
| 0 | 1809 num_fields--; |
| 1810 skip_backtrace = true; | |
| 1811 } | |
| 1812 } | |
| 1813 | |
| 1142 | 1814 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
| 0 | 1815 objArrayHandle result (THREAD, r); |
| 1816 | |
| 1817 int out_idx = 0; | |
| 1818 fieldDescriptor fd; | |
| 3938 | 1819 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
| 0 | 1820 if (skip_backtrace) { |
| 1821 // 4496456 skip java.lang.Throwable.backtrace | |
| 3938 | 1822 int offset = fs.offset(); |
| 0 | 1823 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
| 1824 } | |
| 1825 | |
| 3938 | 1826 if (!publicOnly || fs.access_flags().is_public()) { |
| 1827 fd.initialize(k(), fs.index()); | |
| 0 | 1828 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
| 1829 result->obj_at_put(out_idx, field); | |
| 1830 ++out_idx; | |
| 1831 } | |
| 1832 } | |
| 1833 assert(out_idx == num_fields, "just checking"); | |
| 1834 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1835 } | |
| 1836 JVM_END | |
| 1837 | |
|
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1838 static bool select_method(methodHandle method, bool want_constructor) { |
|
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1839 if (want_constructor) { |
|
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1840 return (method->is_initializer() && !method->is_static()); |
|
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1841 } else { |
|
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1842 return (!method->is_initializer() && !method->is_overpass()); |
|
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1843 } |
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|
1844 } |
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1845 |
|
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1846 static jobjectArray get_class_declared_methods_helper( |
|
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|
1847 JNIEnv *env, |
|
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|
1848 jclass ofClass, jboolean publicOnly, |
|
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|
1849 bool want_constructor, |
|
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1850 Klass* klass, TRAPS) { |
|
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|
1851 |
| 0 | 1852 JvmtiVMObjectAllocEventCollector oam; |
| 1853 | |
| 1854 // Exclude primitive types and array types | |
| 1855 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
| 6983 | 1856 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
| 0 | 1857 // Return empty array |
|
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|
1858 oop res = oopFactory::new_objArray(klass, 0, CHECK_NULL); |
| 0 | 1859 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1860 } | |
| 1861 | |
|
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1862 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
| 0 | 1863 |
| 1864 // Ensure class is linked | |
| 1865 k->link_class(CHECK_NULL); | |
| 1866 | |
|
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1867 Array<Method*>* methods = k->methods(); |
| 0 | 1868 int methods_length = methods->length(); |
|
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1869 |
|
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1870 // Save original method_idnum in case of redefinition, which can change |
|
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1871 // the idnum of obsolete methods. The new method will have the same idnum |
|
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1872 // but if we refresh the methods array, the counts will be wrong. |
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1873 ResourceMark rm(THREAD); |
|
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1874 GrowableArray<int>* idnums = new GrowableArray<int>(methods_length); |
| 0 | 1875 int num_methods = 0; |
| 1876 | |
|
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1877 for (int i = 0; i < methods_length; i++) { |
|
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1878 methodHandle method(THREAD, methods->at(i)); |
|
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1879 if (select_method(method, want_constructor)) { |
| 0 | 1880 if (!publicOnly || method->is_public()) { |
|
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1881 idnums->push(method->method_idnum()); |
| 0 | 1882 ++num_methods; |
| 1883 } | |
| 1884 } | |
| 1885 } | |
| 1886 | |
| 1887 // Allocate result | |
|
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1888 objArrayOop r = oopFactory::new_objArray(klass, num_methods, CHECK_NULL); |
| 0 | 1889 objArrayHandle result (THREAD, r); |
| 1890 | |
|
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1891 // Now just put the methods that we selected above, but go by their idnum |
|
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1892 // in case of redefinition. The methods can be redefined at any safepoint, |
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1893 // so above when allocating the oop array and below when creating reflect |
|
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1894 // objects. |
|
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1895 for (int i = 0; i < num_methods; i++) { |
|
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1896 methodHandle method(THREAD, k->method_with_idnum(idnums->at(i))); |
|
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1897 if (method.is_null()) { |
|
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1898 // Method may have been deleted and seems this API can handle null |
|
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1899 // Otherwise should probably put a method that throws NSME |
|
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1900 result->obj_at_put(i, NULL); |
|
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1901 } else { |
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1902 oop m; |
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1903 if (want_constructor) { |
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1904 m = Reflection::new_constructor(method, CHECK_NULL); |
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1905 } else { |
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1906 m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); |
| 0 | 1907 } |
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1908 result->obj_at_put(i, m); |
| 0 | 1909 } |
| 1910 } | |
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1911 |
| 0 | 1912 return (jobjectArray) JNIHandles::make_local(env, result()); |
| 1913 } | |
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1914 |
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1915 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) |
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1916 { |
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1917 JVMWrapper("JVM_GetClassDeclaredMethods"); |
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1918 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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1919 /*want_constructor*/ false, |
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1920 SystemDictionary::reflect_Method_klass(), THREAD); |
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1921 } |
| 0 | 1922 JVM_END |
| 1923 | |
| 1924 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1925 { | |
| 1926 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
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1927 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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1928 /*want_constructor*/ true, |
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1929 SystemDictionary::reflect_Constructor_klass(), THREAD); |
| 0 | 1930 } |
| 1931 JVM_END | |
| 1932 | |
| 1933 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
| 1934 { | |
| 1935 JVMWrapper("JVM_GetClassAccessFlags"); | |
| 1936 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1937 // Primitive type | |
| 1938 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 1939 } | |
| 1940 | |
| 6983 | 1941 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 1942 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; |
| 1943 } | |
| 1944 JVM_END | |
| 1945 | |
| 1946 | |
| 1947 // Constant pool access ////////////////////////////////////////////////////////// | |
| 1948 | |
| 1949 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
| 1950 { | |
| 1951 JVMWrapper("JVM_GetClassConstantPool"); | |
| 1952 JvmtiVMObjectAllocEventCollector oam; | |
| 1953 | |
| 1954 // Return null for primitives and arrays | |
| 1955 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
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1956 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1957 if (k->oop_is_instance()) { |
| 0 | 1958 instanceKlassHandle k_h(THREAD, k); |
| 1959 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
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1960 sun_reflect_ConstantPool::set_cp(jcp(), k_h->constants()); |
| 0 | 1961 return JNIHandles::make_local(jcp()); |
| 1962 } | |
| 1963 } | |
| 1964 return NULL; | |
| 1965 } | |
| 1966 JVM_END | |
| 1967 | |
| 1968 | |
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1969 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject obj, jobject unused)) |
| 0 | 1970 { |
| 1971 JVMWrapper("JVM_ConstantPoolGetSize"); | |
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1972 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1973 return cp->length(); |
| 1974 } | |
| 1975 JVM_END | |
| 1976 | |
| 1977 | |
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1978 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 1979 { |
| 1980 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
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1981 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1982 bounds_check(cp, index, CHECK_NULL); |
| 1983 constantTag tag = cp->tag_at(index); | |
| 1984 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 1985 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1986 } | |
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1987 Klass* k = cp->klass_at(index, CHECK_NULL); |
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1988 return (jclass) JNIHandles::make_local(k->java_mirror()); |
| 0 | 1989 } |
| 1990 JVM_END | |
| 1991 | |
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1992 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 1993 { |
| 1994 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
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1995 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1996 bounds_check(cp, index, CHECK_NULL); |
| 1997 constantTag tag = cp->tag_at(index); | |
| 1998 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 1999 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2000 } | |
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2001 Klass* k = ConstantPool::klass_at_if_loaded(cp, index); |
| 0 | 2002 if (k == NULL) return NULL; |
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2003 return (jclass) JNIHandles::make_local(k->java_mirror()); |
| 0 | 2004 } |
| 2005 JVM_END | |
| 2006 | |
| 2007 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 2008 constantTag tag = cp->tag_at(index); | |
| 2009 if (!tag.is_method() && !tag.is_interface_method()) { | |
| 2010 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2011 } | |
| 2012 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2013 Klass* k_o; |
| 0 | 2014 if (force_resolution) { |
| 2015 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 2016 } else { | |
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2017 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
| 0 | 2018 if (k_o == NULL) return NULL; |
| 2019 } | |
| 2020 instanceKlassHandle k(THREAD, k_o); | |
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2021 Symbol* name = cp->uncached_name_ref_at(index); |
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2022 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 2023 methodHandle m (THREAD, k->find_method(name, sig)); |
| 2024 if (m.is_null()) { | |
| 2025 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
| 2026 } | |
| 2027 oop method; | |
| 2028 if (!m->is_initializer() || m->is_static()) { | |
| 2029 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
| 2030 } else { | |
| 2031 method = Reflection::new_constructor(m, CHECK_NULL); | |
| 2032 } | |
| 2033 return JNIHandles::make_local(method); | |
| 2034 } | |
| 2035 | |
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2036 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2037 { |
| 2038 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
| 2039 JvmtiVMObjectAllocEventCollector oam; | |
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2040 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2041 bounds_check(cp, index, CHECK_NULL); |
| 2042 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
| 2043 return res; | |
| 2044 } | |
| 2045 JVM_END | |
| 2046 | |
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2047 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2048 { |
| 2049 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
| 2050 JvmtiVMObjectAllocEventCollector oam; | |
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2051 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2052 bounds_check(cp, index, CHECK_NULL); |
| 2053 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
| 2054 return res; | |
| 2055 } | |
| 2056 JVM_END | |
| 2057 | |
| 2058 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 2059 constantTag tag = cp->tag_at(index); | |
| 2060 if (!tag.is_field()) { | |
| 2061 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2062 } | |
| 2063 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2064 Klass* k_o; |
| 0 | 2065 if (force_resolution) { |
| 2066 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 2067 } else { | |
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2068 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
| 0 | 2069 if (k_o == NULL) return NULL; |
| 2070 } | |
| 2071 instanceKlassHandle k(THREAD, k_o); | |
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2072 Symbol* name = cp->uncached_name_ref_at(index); |
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2073 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 2074 fieldDescriptor fd; |
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2075 Klass* target_klass = k->find_field(name, sig, &fd); |
| 0 | 2076 if (target_klass == NULL) { |
| 2077 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
| 2078 } | |
| 2079 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
| 2080 return JNIHandles::make_local(field); | |
| 2081 } | |
| 2082 | |
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2083 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject obj, jobject unusedl, jint index)) |
| 0 | 2084 { |
| 2085 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
| 2086 JvmtiVMObjectAllocEventCollector oam; | |
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2087 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2088 bounds_check(cp, index, CHECK_NULL); |
| 2089 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
| 2090 return res; | |
| 2091 } | |
| 2092 JVM_END | |
| 2093 | |
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2094 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2095 { |
| 2096 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
| 2097 JvmtiVMObjectAllocEventCollector oam; | |
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2098 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2099 bounds_check(cp, index, CHECK_NULL); |
| 2100 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
| 2101 return res; | |
| 2102 } | |
| 2103 JVM_END | |
| 2104 | |
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2105 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2106 { |
| 2107 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
| 2108 JvmtiVMObjectAllocEventCollector oam; | |
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2109 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2110 bounds_check(cp, index, CHECK_NULL); |
| 2111 constantTag tag = cp->tag_at(index); | |
| 2112 if (!tag.is_field_or_method()) { | |
| 2113 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2114 } | |
| 2115 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2116 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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2117 Symbol* member_name = cp->uncached_name_ref_at(index); |
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2118 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
| 1142 | 2119 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
| 0 | 2120 objArrayHandle dest(THREAD, dest_o); |
| 2121 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
| 2122 dest->obj_at_put(0, str()); | |
| 2123 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
| 2124 dest->obj_at_put(1, str()); | |
| 2125 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
| 2126 dest->obj_at_put(2, str()); | |
| 2127 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 2128 } | |
| 2129 JVM_END | |
| 2130 | |
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2131 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2132 { |
| 2133 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
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2134 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2135 bounds_check(cp, index, CHECK_0); |
| 2136 constantTag tag = cp->tag_at(index); | |
| 2137 if (!tag.is_int()) { | |
| 2138 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2139 } | |
| 2140 return cp->int_at(index); | |
| 2141 } | |
| 2142 JVM_END | |
| 2143 | |
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2144 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2145 { |
| 2146 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
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2147 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2148 bounds_check(cp, index, CHECK_(0L)); |
| 2149 constantTag tag = cp->tag_at(index); | |
| 2150 if (!tag.is_long()) { | |
| 2151 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2152 } | |
| 2153 return cp->long_at(index); | |
| 2154 } | |
| 2155 JVM_END | |
| 2156 | |
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2157 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2158 { |
| 2159 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
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2160 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2161 bounds_check(cp, index, CHECK_(0.0f)); |
| 2162 constantTag tag = cp->tag_at(index); | |
| 2163 if (!tag.is_float()) { | |
| 2164 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2165 } | |
| 2166 return cp->float_at(index); | |
| 2167 } | |
| 2168 JVM_END | |
| 2169 | |
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2170 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2171 { |
| 2172 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
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2173 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2174 bounds_check(cp, index, CHECK_(0.0)); |
| 2175 constantTag tag = cp->tag_at(index); | |
| 2176 if (!tag.is_double()) { | |
| 2177 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2178 } | |
| 2179 return cp->double_at(index); | |
| 2180 } | |
| 2181 JVM_END | |
| 2182 | |
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2183 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2184 { |
| 2185 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
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2186 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2187 bounds_check(cp, index, CHECK_NULL); |
| 2188 constantTag tag = cp->tag_at(index); | |
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2189 if (!tag.is_string()) { |
| 0 | 2190 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
| 2191 } | |
| 2192 oop str = cp->string_at(index, CHECK_NULL); | |
| 2193 return (jstring) JNIHandles::make_local(str); | |
| 2194 } | |
| 2195 JVM_END | |
| 2196 | |
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2197 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2198 { |
| 2199 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
| 2200 JvmtiVMObjectAllocEventCollector oam; | |
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2201 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2202 bounds_check(cp, index, CHECK_NULL); |
| 2203 constantTag tag = cp->tag_at(index); | |
| 2204 if (!tag.is_symbol()) { | |
| 2205 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2206 } | |
|
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2207 Symbol* sym = cp->symbol_at(index); |
| 0 | 2208 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 2209 return (jstring) JNIHandles::make_local(str()); | |
| 2210 } | |
| 2211 JVM_END | |
| 2212 | |
| 2213 | |
| 2214 // Assertion support. ////////////////////////////////////////////////////////// | |
| 2215 | |
| 2216 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
| 2217 JVMWrapper("JVM_DesiredAssertionStatus"); | |
| 2218 assert(cls != NULL, "bad class"); | |
| 2219 | |
| 2220 oop r = JNIHandles::resolve(cls); | |
| 2221 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
| 2222 if (java_lang_Class::is_primitive(r)) return false; | |
| 2223 | |
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2224 Klass* k = java_lang_Class::as_Klass(r); |
| 6983 | 2225 assert(k->oop_is_instance(), "must be an instance klass"); |
| 2226 if (! k->oop_is_instance()) return false; | |
| 0 | 2227 |
| 2228 ResourceMark rm(THREAD); | |
| 6983 | 2229 const char* name = k->name()->as_C_string(); |
| 2230 bool system_class = k->class_loader() == NULL; | |
| 0 | 2231 return JavaAssertions::enabled(name, system_class); |
| 2232 | |
| 2233 JVM_END | |
| 2234 | |
| 2235 | |
| 2236 // Return a new AssertionStatusDirectives object with the fields filled in with | |
| 2237 // command-line assertion arguments (i.e., -ea, -da). | |
| 2238 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
| 2239 JVMWrapper("JVM_AssertionStatusDirectives"); | |
| 2240 JvmtiVMObjectAllocEventCollector oam; | |
| 2241 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
| 2242 return JNIHandles::make_local(env, asd); | |
| 2243 JVM_END | |
| 2244 | |
| 2245 // Verification //////////////////////////////////////////////////////////////////////////////// | |
| 2246 | |
| 2247 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
| 2248 | |
| 2249 // RedefineClasses support: bug 6214132 caused verification to fail. | |
| 2250 // All functions from this section should call the jvmtiThreadSate function: | |
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2251 // Klass* class_to_verify_considering_redefinition(Klass* klass). |
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2252 // The function returns a Klass* of the _scratch_class if the verifier |
| 0 | 2253 // was invoked in the middle of the class redefinition. |
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2254 // Otherwise it returns its argument value which is the _the_class Klass*. |
| 0 | 2255 // Please, refer to the description in the jvmtiThreadSate.hpp. |
| 2256 | |
| 2257 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
| 2258 JVMWrapper("JVM_GetClassNameUTF"); | |
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2259 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2260 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2261 return k->name()->as_utf8(); |
| 0 | 2262 JVM_END |
| 2263 | |
| 2264 | |
| 2265 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
| 2266 JVMWrapper("JVM_GetClassCPTypes"); | |
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2267 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2268 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2269 // types will have length zero if this is not an InstanceKlass |
| 0 | 2270 // (length is determined by call to JVM_GetClassCPEntriesCount) |
| 6983 | 2271 if (k->oop_is_instance()) { |
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2272 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2273 for (int index = cp->length() - 1; index >= 0; index--) { |
| 2274 constantTag tag = cp->tag_at(index); | |
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2275 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : tag.value(); |
| 0 | 2276 } |
| 2277 } | |
| 2278 JVM_END | |
| 2279 | |
| 2280 | |
| 2281 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
| 2282 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
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2283 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2284 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2285 if (!k->oop_is_instance()) |
| 0 | 2286 return 0; |
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2287 return InstanceKlass::cast(k)->constants()->length(); |
| 0 | 2288 JVM_END |
| 2289 | |
| 2290 | |
| 2291 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
| 2292 JVMWrapper("JVM_GetClassFieldsCount"); | |
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2293 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2294 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2295 if (!k->oop_is_instance()) |
| 0 | 2296 return 0; |
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2297 return InstanceKlass::cast(k)->java_fields_count(); |
| 0 | 2298 JVM_END |
| 2299 | |
| 2300 | |
| 2301 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
| 2302 JVMWrapper("JVM_GetClassMethodsCount"); | |
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2303 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2304 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2305 if (!k->oop_is_instance()) |
| 0 | 2306 return 0; |
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2307 return InstanceKlass::cast(k)->methods()->length(); |
| 0 | 2308 JVM_END |
| 2309 | |
| 2310 | |
| 2311 // The following methods, used for the verifier, are never called with | |
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2312 // array klasses, so a direct cast to InstanceKlass is safe. |
| 0 | 2313 // Typically, these methods are called in a loop with bounds determined |
| 2314 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
| 2315 // zero for arrays. | |
| 2316 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
| 2317 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
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2318 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2319 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2320 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2321 int length = method->checked_exceptions_length(); |
| 0 | 2322 if (length > 0) { |
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2323 CheckedExceptionElement* table= method->checked_exceptions_start(); |
| 0 | 2324 for (int i = 0; i < length; i++) { |
| 2325 exceptions[i] = table[i].class_cp_index; | |
| 2326 } | |
| 2327 } | |
| 2328 JVM_END | |
| 2329 | |
| 2330 | |
| 2331 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
| 2332 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
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2333 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2334 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2335 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2336 return method->checked_exceptions_length(); |
| 0 | 2337 JVM_END |
| 2338 | |
| 2339 | |
| 2340 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
| 2341 JVMWrapper("JVM_GetMethodIxByteCode"); | |
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2342 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2343 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2344 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2345 memcpy(code, method->code_base(), method->code_size()); |
| 0 | 2346 JVM_END |
| 2347 | |
| 2348 | |
| 2349 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
| 2350 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
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2351 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2352 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2353 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2354 return method->code_size(); |
| 0 | 2355 JVM_END |
| 2356 | |
| 2357 | |
| 2358 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
| 2359 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
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2360 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2361 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2362 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2363 ExceptionTable extable(method); |
|
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2364 entry->start_pc = extable.start_pc(entry_index); |
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2365 entry->end_pc = extable.end_pc(entry_index); |
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2366 entry->handler_pc = extable.handler_pc(entry_index); |
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2367 entry->catchType = extable.catch_type_index(entry_index); |
| 0 | 2368 JVM_END |
| 2369 | |
| 2370 | |
| 2371 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
| 2372 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
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2373 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2374 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2375 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2376 return method->exception_table_length(); |
| 0 | 2377 JVM_END |
| 2378 | |
| 2379 | |
| 2380 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
| 2381 JVMWrapper("JVM_GetMethodIxModifiers"); | |
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2382 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2383 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2384 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2385 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
| 0 | 2386 JVM_END |
| 2387 | |
| 2388 | |
| 2389 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
| 2390 JVMWrapper("JVM_GetFieldIxModifiers"); | |
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2391 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2392 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2393 return InstanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
| 0 | 2394 JVM_END |
| 2395 | |
| 2396 | |
| 2397 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
| 2398 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
|
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2399 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2400 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2401 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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|
2402 return method->max_locals(); |
| 0 | 2403 JVM_END |
| 2404 | |
| 2405 | |
| 2406 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
| 2407 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
|
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2408 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2409 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2410 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2411 return method->size_of_parameters(); |
| 0 | 2412 JVM_END |
| 2413 | |
| 2414 | |
| 2415 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
| 2416 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
|
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|
2417 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2418 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2419 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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2420 return method->verifier_max_stack(); |
| 0 | 2421 JVM_END |
| 2422 | |
| 2423 | |
| 2424 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
| 2425 JVMWrapper("JVM_IsConstructorIx"); | |
| 2426 ResourceMark rm(THREAD); | |
|
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|
2427 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2428 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2429 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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2430 return method->name() == vmSymbols::object_initializer_name(); |
| 0 | 2431 JVM_END |
| 2432 | |
| 2433 | |
|
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|
2434 JVM_QUICK_ENTRY(jboolean, JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cls, int method_index)) |
|
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|
2435 JVMWrapper("JVM_IsVMGeneratedMethodIx"); |
|
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|
2436 ResourceMark rm(THREAD); |
|
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changeset
|
2437 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
|
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|
2438 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2439 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2440 return method->is_overpass(); |
|
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|
2441 JVM_END |
|
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|
2442 |
| 0 | 2443 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) |
| 2444 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
|
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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->name()->as_utf8(); |
| 0 | 2449 JVM_END |
| 2450 | |
| 2451 | |
| 2452 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
| 2453 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
|
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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->signature()->as_utf8(); |
| 0 | 2458 JVM_END |
| 2459 | |
| 2460 /** | |
| 2461 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
| 2462 * read entries in the constant pool. Since the old verifier always | |
| 2463 * works on a copy of the code, it will not see any rewriting that | |
| 2464 * may possibly occur in the middle of verification. So it is important | |
| 2465 * that nothing it calls tries to use the cpCache instead of the raw | |
| 2466 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
| 2467 */ | |
| 2468 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2469 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
|
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2470 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2471 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2472 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2473 switch (cp->tag_at(cp_index).value()) { |
| 2474 case JVM_CONSTANT_Fieldref: | |
| 2475 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
| 2476 default: | |
| 2477 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
| 2478 } | |
| 2479 ShouldNotReachHere(); | |
| 2480 return NULL; | |
| 2481 JVM_END | |
| 2482 | |
| 2483 | |
| 2484 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2485 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
|
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|
2486 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2487 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2488 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2489 switch (cp->tag_at(cp_index).value()) { |
| 2490 case JVM_CONSTANT_InterfaceMethodref: | |
| 2491 case JVM_CONSTANT_Methodref: | |
|
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|
2492 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2493 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
| 2494 default: | |
| 2495 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
| 2496 } | |
| 2497 ShouldNotReachHere(); | |
| 2498 return NULL; | |
| 2499 JVM_END | |
| 2500 | |
| 2501 | |
| 2502 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2503 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
|
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|
2504 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2505 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2506 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2507 switch (cp->tag_at(cp_index).value()) { |
| 2508 case JVM_CONSTANT_InterfaceMethodref: | |
| 2509 case JVM_CONSTANT_Methodref: | |
|
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|
2510 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2511 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
| 2512 default: | |
| 2513 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
| 2514 } | |
| 2515 ShouldNotReachHere(); | |
| 2516 return NULL; | |
| 2517 JVM_END | |
| 2518 | |
| 2519 | |
| 2520 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2521 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
|
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|
2522 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2523 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2524 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2525 switch (cp->tag_at(cp_index).value()) { |
| 2526 case JVM_CONSTANT_Fieldref: | |
| 2527 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
| 2528 default: | |
| 2529 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
| 2530 } | |
| 2531 ShouldNotReachHere(); | |
| 2532 return NULL; | |
| 2533 JVM_END | |
| 2534 | |
| 2535 | |
| 2536 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2537 JVMWrapper("JVM_GetCPClassNameUTF"); | |
|
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|
2538 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2539 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2540 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
|
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|
2541 Symbol* classname = cp->klass_name_at(cp_index); |
| 0 | 2542 return classname->as_utf8(); |
| 2543 JVM_END | |
| 2544 | |
| 2545 | |
| 2546 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2547 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
|
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|
2548 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2549 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2550 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2551 switch (cp->tag_at(cp_index).value()) { |
| 2552 case JVM_CONSTANT_Fieldref: { | |
| 2553 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
|
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|
2554 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2555 return classname->as_utf8(); |
| 2556 } | |
| 2557 default: | |
| 2558 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
| 2559 } | |
| 2560 ShouldNotReachHere(); | |
| 2561 return NULL; | |
| 2562 JVM_END | |
| 2563 | |
| 2564 | |
| 2565 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2566 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
|
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|
2567 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2568 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2569 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2570 switch (cp->tag_at(cp_index).value()) { |
| 2571 case JVM_CONSTANT_Methodref: | |
| 2572 case JVM_CONSTANT_InterfaceMethodref: { | |
| 2573 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
|
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|
2574 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2575 return classname->as_utf8(); |
| 2576 } | |
| 2577 default: | |
| 2578 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
| 2579 } | |
| 2580 ShouldNotReachHere(); | |
| 2581 return NULL; | |
| 2582 JVM_END | |
| 2583 | |
| 2584 | |
| 3938 | 2585 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
| 0 | 2586 JVMWrapper("JVM_GetCPFieldModifiers"); |
|
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|
2587 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
|
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|
2588 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
| 0 | 2589 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 2590 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
|
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|
2591 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
|
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|
2592 ConstantPool* cp_called = InstanceKlass::cast(k_called)->constants(); |
| 0 | 2593 switch (cp->tag_at(cp_index).value()) { |
| 2594 case JVM_CONSTANT_Fieldref: { | |
|
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|
2595 Symbol* name = cp->uncached_name_ref_at(cp_index); |
|
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|
2596 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
| 3938 | 2597 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
| 2598 if (fs.name() == name && fs.signature() == signature) { | |
| 2599 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
| 0 | 2600 } |
| 2601 } | |
| 2602 return -1; | |
| 2603 } | |
| 2604 default: | |
| 2605 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
| 2606 } | |
| 2607 ShouldNotReachHere(); | |
| 2608 return 0; | |
| 2609 JVM_END | |
| 2610 | |
| 2611 | |
| 2612 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
| 2613 JVMWrapper("JVM_GetCPMethodModifiers"); | |
|
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|
2614 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
|
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|
2615 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
| 0 | 2616 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 2617 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
|
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|
2618 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2619 switch (cp->tag_at(cp_index).value()) { |
| 2620 case JVM_CONSTANT_Methodref: | |
| 2621 case JVM_CONSTANT_InterfaceMethodref: { | |
|
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|
2622 Symbol* name = cp->uncached_name_ref_at(cp_index); |
|
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|
2623 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
|
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|
2624 Array<Method*>* methods = InstanceKlass::cast(k_called)->methods(); |
| 0 | 2625 int methods_count = methods->length(); |
| 2626 for (int i = 0; i < methods_count; i++) { | |
|
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|
2627 Method* method = methods->at(i); |
| 0 | 2628 if (method->name() == name && method->signature() == signature) { |
| 2629 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 2630 } | |
| 2631 } | |
| 2632 return -1; | |
| 2633 } | |
| 2634 default: | |
| 2635 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
| 2636 } | |
| 2637 ShouldNotReachHere(); | |
| 2638 return 0; | |
| 2639 JVM_END | |
| 2640 | |
| 2641 | |
| 2642 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
| 2643 | |
| 2644 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
| 2645 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
| 2646 JVM_END | |
| 2647 | |
| 2648 | |
| 2649 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
| 2650 JVMWrapper("JVM_IsSameClassPackage"); | |
| 2651 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
| 2652 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
|
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coleenp
parents:
6271
diff
changeset
|
2653 Klass* klass1 = java_lang_Class::as_Klass(class1_mirror); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
2654 Klass* klass2 = java_lang_Class::as_Klass(class2_mirror); |
| 0 | 2655 return (jboolean) Reflection::is_same_class_package(klass1, klass2); |
| 2656 JVM_END | |
| 2657 | |
| 2658 | |
| 2659 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
| 2660 | |
| 2661 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
| 2662 JVMWrapper2("JVM_Open (%s)", fname); | |
| 2663 | |
| 2664 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2665 int result = os::open(fname, flags, mode); |
| 0 | 2666 if (result >= 0) { |
| 2667 return result; | |
| 2668 } else { | |
| 2669 switch(errno) { | |
| 2670 case EEXIST: | |
| 2671 return JVM_EEXIST; | |
| 2672 default: | |
| 2673 return -1; | |
| 2674 } | |
| 2675 } | |
| 2676 JVM_END | |
| 2677 | |
| 2678 | |
| 2679 JVM_LEAF(jint, JVM_Close(jint fd)) | |
| 2680 JVMWrapper2("JVM_Close (0x%x)", fd); | |
| 2681 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2682 return os::close(fd); |
| 0 | 2683 JVM_END |
| 2684 | |
| 2685 | |
| 2686 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
| 2687 JVMWrapper2("JVM_Read (0x%x)", fd); | |
| 2688 | |
| 2689 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2690 return (jint)os::restartable_read(fd, buf, nbytes); |
| 0 | 2691 JVM_END |
| 2692 | |
| 2693 | |
| 2694 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
| 2695 JVMWrapper2("JVM_Write (0x%x)", fd); | |
| 2696 | |
| 2697 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2698 return (jint)os::write(fd, buf, nbytes); |
| 0 | 2699 JVM_END |
| 2700 | |
| 2701 | |
| 2702 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
| 2703 JVMWrapper2("JVM_Available (0x%x)", fd); | |
| 2704 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2705 return os::available(fd, pbytes); |
| 0 | 2706 JVM_END |
| 2707 | |
| 2708 | |
| 2709 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
| 2710 JVMWrapper4("JVM_Lseek (0x%x, %Ld, %d)", fd, offset, whence); | |
| 2711 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2712 return os::lseek(fd, offset, whence); |
| 0 | 2713 JVM_END |
| 2714 | |
| 2715 | |
| 2716 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
| 2717 JVMWrapper3("JVM_SetLength (0x%x, %Ld)", fd, length); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2718 return os::ftruncate(fd, length); |
| 0 | 2719 JVM_END |
| 2720 | |
| 2721 | |
| 2722 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
| 2723 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
| 2724 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2725 return os::fsync(fd); |
| 0 | 2726 JVM_END |
| 2727 | |
| 2728 | |
| 2729 // Printing support ////////////////////////////////////////////////// | |
| 2730 extern "C" { | |
| 2731 | |
| 2732 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { | |
| 2733 // see bug 4399518, 4417214 | |
| 2734 if ((intptr_t)count <= 0) return -1; | |
| 2735 return vsnprintf(str, count, fmt, args); | |
| 2736 } | |
| 2737 | |
| 2738 | |
| 2739 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { | |
| 2740 va_list args; | |
| 2741 int len; | |
| 2742 va_start(args, fmt); | |
| 2743 len = jio_vsnprintf(str, count, fmt, args); | |
| 2744 va_end(args); | |
| 2745 return len; | |
| 2746 } | |
| 2747 | |
| 2748 | |
| 2749 int jio_fprintf(FILE* f, const char *fmt, ...) { | |
| 2750 int len; | |
| 2751 va_list args; | |
| 2752 va_start(args, fmt); | |
| 2753 len = jio_vfprintf(f, fmt, args); | |
| 2754 va_end(args); | |
| 2755 return len; | |
| 2756 } | |
| 2757 | |
| 2758 | |
| 2759 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { | |
| 2760 if (Arguments::vfprintf_hook() != NULL) { | |
| 2761 return Arguments::vfprintf_hook()(f, fmt, args); | |
| 2762 } else { | |
| 2763 return vfprintf(f, fmt, args); | |
| 2764 } | |
| 2765 } | |
| 2766 | |
| 2767 | |
| 2191 | 2768 JNIEXPORT int jio_printf(const char *fmt, ...) { |
| 0 | 2769 int len; |
| 2770 va_list args; | |
| 2771 va_start(args, fmt); | |
| 2772 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
| 2773 va_end(args); | |
| 2774 return len; | |
| 2775 } | |
| 2776 | |
| 2777 | |
| 2778 // HotSpot specific jio method | |
| 2779 void jio_print(const char* s) { | |
| 2780 // Try to make this function as atomic as possible. | |
| 2781 if (Arguments::vfprintf_hook() != NULL) { | |
| 2782 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
| 2783 } else { | |
|
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
431
diff
changeset
|
2784 // 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
|
2785 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
| 0 | 2786 } |
| 2787 } | |
| 2788 | |
| 2789 } // Extern C | |
| 2790 | |
| 2791 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
| 2792 | |
| 2793 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
| 2794 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
| 2795 // OSThread objects. The exception to this rule is when the target object is the thread | |
| 2796 // doing the operation, in which case we know that the thread won't exit until the | |
| 2797 // operation is done (all exits being voluntary). There are a few cases where it is | |
| 2798 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
| 2799 // you are alive. While these can still happen, they are not subject to deadlocks if | |
| 2800 // the lock is held while the operation occurs (this is not the case for suspend, for | |
| 2801 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
| 2802 // implementation is local to this file, we always lock Threads_lock for that one. | |
| 2803 | |
| 2804 static void thread_entry(JavaThread* thread, TRAPS) { | |
| 2805 HandleMark hm(THREAD); | |
| 2806 Handle obj(THREAD, thread->threadObj()); | |
| 2807 JavaValue result(T_VOID); | |
| 2808 JavaCalls::call_virtual(&result, | |
| 2809 obj, | |
| 1142 | 2810 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
2811 vmSymbols::run_method_name(), |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
2812 vmSymbols::void_method_signature(), |
| 0 | 2813 THREAD); |
| 2814 } | |
| 2815 | |
| 2816 | |
| 2817 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
| 2818 JVMWrapper("JVM_StartThread"); | |
| 2819 JavaThread *native_thread = NULL; | |
| 2820 | |
| 2821 // We cannot hold the Threads_lock when we throw an exception, | |
| 2822 // due to rank ordering issues. Example: we might need to grab the | |
| 2823 // Heap_lock while we construct the exception. | |
| 2824 bool throw_illegal_thread_state = false; | |
| 2825 | |
| 2826 // We must release the Threads_lock before we can post a jvmti event | |
| 2827 // in Thread::start. | |
| 2828 { | |
| 2829 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
| 2830 // we operate. | |
| 2831 MutexLocker mu(Threads_lock); | |
| 2832 | |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2833 // 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
|
2834 // 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
|
2835 // 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
|
2836 // 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
|
2837 // (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
|
2838 // 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
|
2839 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
|
2840 throw_illegal_thread_state = true; |
| 0 | 2841 } else { |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2842 // 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
|
2843 // 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
|
2844 |
| 0 | 2845 jlong size = |
| 2846 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
| 2847 // Allocate the C++ Thread structure and create the native thread. The | |
| 2848 // stack size retrieved from java is signed, but the constructor takes | |
| 2849 // size_t (an unsigned type), so avoid passing negative values which would | |
| 2850 // result in really large stacks. | |
| 2851 size_t sz = size > 0 ? (size_t) size : 0; | |
| 2852 native_thread = new JavaThread(&thread_entry, sz); | |
| 2853 | |
| 2854 // At this point it may be possible that no osthread was created for the | |
| 2855 // JavaThread due to lack of memory. Check for this situation and throw | |
| 2856 // an exception if necessary. Eventually we may want to change this so | |
| 2857 // that we only grab the lock if the thread was created successfully - | |
| 2858 // then we can also do this check and throw the exception in the | |
| 2859 // JavaThread constructor. | |
| 2860 if (native_thread->osthread() != NULL) { | |
| 2861 // Note: the current thread is not being used within "prepare". | |
| 2862 native_thread->prepare(jthread); | |
| 2863 } | |
| 2864 } | |
| 2865 } | |
| 2866 | |
| 2867 if (throw_illegal_thread_state) { | |
| 2868 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
| 2869 } | |
| 2870 | |
| 2871 assert(native_thread != NULL, "Starting null thread?"); | |
| 2872 | |
| 2873 if (native_thread->osthread() == NULL) { | |
| 2874 // No one should hold a reference to the 'native_thread'. | |
| 2875 delete native_thread; | |
| 2876 if (JvmtiExport::should_post_resource_exhausted()) { | |
| 2877 JvmtiExport::post_resource_exhausted( | |
| 2878 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
| 2879 "unable to create new native thread"); | |
| 2880 } | |
| 2881 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
| 2882 "unable to create new native thread"); | |
| 2883 } | |
| 2884 | |
| 2885 Thread::start(native_thread); | |
| 2886 | |
| 2887 JVM_END | |
| 2888 | |
| 2889 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
| 2890 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
| 2891 // 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
|
2892 // same thread as the sender, no safepoint is needed. |
| 0 | 2893 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
| 2894 JVMWrapper("JVM_StopThread"); | |
| 2895 | |
| 2896 oop java_throwable = JNIHandles::resolve(throwable); | |
| 2897 if (java_throwable == NULL) { | |
| 2898 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 2899 } | |
| 2900 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2901 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
|
2902 Events::log_exception(JavaThread::current(), |
|
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4717
diff
changeset
|
2903 "JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", |
|
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4717
diff
changeset
|
2904 receiver, (address)java_thread, throwable); |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2905 // First check if thread is alive |
| 0 | 2906 if (receiver != NULL) { |
| 2907 // Check if exception is getting thrown at self (use oop equality, since the | |
| 2908 // target object might exit) | |
| 2909 if (java_thread == thread->threadObj()) { | |
| 2910 THROW_OOP(java_throwable); | |
| 2911 } else { | |
| 2912 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
| 2913 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
| 2914 } | |
| 2915 } | |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2916 else { |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2917 // Either: |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2918 // - 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
|
2919 // - target thread already terminated |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2920 // We could read the threadStatus to determine which case it is |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2921 // but that is overkill as it doesn't matter. We must set the |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2922 // stillborn flag for the first case, and if the thread has already |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2923 // exited setting this flag has no affect |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2924 java_lang_Thread::set_stillborn(java_thread); |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2925 } |
| 0 | 2926 JVM_END |
| 2927 | |
| 2928 | |
| 2929 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
| 2930 JVMWrapper("JVM_IsThreadAlive"); | |
| 2931 | |
| 2932 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
| 2933 return java_lang_Thread::is_alive(thread_oop); | |
| 2934 JVM_END | |
| 2935 | |
| 2936 | |
| 2937 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
| 2938 JVMWrapper("JVM_SuspendThread"); | |
| 2939 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2940 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
| 2941 | |
| 2942 if (receiver != NULL) { | |
| 2943 // thread has run and has not exited (still on threads list) | |
| 2944 | |
| 2945 { | |
| 2946 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
| 2947 if (receiver->is_external_suspend()) { | |
| 2948 // Don't allow nested external suspend requests. We can't return | |
| 2949 // an error from this interface so just ignore the problem. | |
| 2950 return; | |
| 2951 } | |
| 2952 if (receiver->is_exiting()) { // thread is in the process of exiting | |
| 2953 return; | |
| 2954 } | |
| 2955 receiver->set_external_suspend(); | |
| 2956 } | |
| 2957 | |
| 2958 // java_suspend() will catch threads in the process of exiting | |
| 2959 // and will ignore them. | |
| 2960 receiver->java_suspend(); | |
| 2961 | |
| 2962 // It would be nice to have the following assertion in all the | |
| 2963 // time, but it is possible for a racing resume request to have | |
| 2964 // resumed this thread right after we suspended it. Temporarily | |
| 2965 // enable this assertion if you are chasing a different kind of | |
| 2966 // bug. | |
| 2967 // | |
| 2968 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
| 2969 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
| 2970 } | |
| 2971 JVM_END | |
| 2972 | |
| 2973 | |
| 2974 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
| 2975 JVMWrapper("JVM_ResumeThread"); | |
| 2976 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
| 2977 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
| 2978 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
| 2979 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
| 2980 // looks at it. | |
| 2981 MutexLocker ml(Threads_lock); | |
| 2982 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 2983 if (thr != NULL) { | |
| 2984 // the thread has run and is not in the process of exiting | |
| 2985 thr->java_resume(); | |
| 2986 } | |
| 2987 JVM_END | |
| 2988 | |
| 2989 | |
| 2990 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
| 2991 JVMWrapper("JVM_SetThreadPriority"); | |
| 2992 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 2993 MutexLocker ml(Threads_lock); | |
| 2994 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2995 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
| 2996 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 2997 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
| 2998 Thread::set_priority(thr, (ThreadPriority)prio); | |
| 2999 } | |
| 3000 JVM_END | |
| 3001 | |
| 3002 | |
| 3003 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
| 3004 JVMWrapper("JVM_Yield"); | |
| 3005 if (os::dont_yield()) return; | |
| 4006 | 3006 #ifndef USDT2 |
|
1324
e392695de029
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1144
diff
changeset
|
3007 HS_DTRACE_PROBE0(hotspot, thread__yield); |
| 4006 | 3008 #else /* USDT2 */ |
| 3009 HOTSPOT_THREAD_YIELD(); | |
| 3010 #endif /* USDT2 */ | |
| 0 | 3011 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
| 3012 // Critical for similar threading behaviour | |
| 3013 if (ConvertYieldToSleep) { | |
| 3014 os::sleep(thread, MinSleepInterval, false); | |
| 3015 } else { | |
| 3016 os::yield(); | |
| 3017 } | |
| 3018 JVM_END | |
| 3019 | |
| 3020 | |
| 3021 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
| 3022 JVMWrapper("JVM_Sleep"); | |
| 3023 | |
| 3024 if (millis < 0) { | |
| 3025 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
| 3026 } | |
| 3027 | |
| 3028 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
| 3029 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 3030 } | |
| 3031 | |
| 3032 // Save current thread state and restore it at the end of this block. | |
| 3033 // And set new thread state to SLEEPING. | |
| 3034 JavaThreadSleepState jtss(thread); | |
| 3035 | |
| 4006 | 3036 #ifndef USDT2 |
|
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|
3037 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); |
| 4006 | 3038 #else /* USDT2 */ |
| 3039 HOTSPOT_THREAD_SLEEP_BEGIN( | |
| 3040 millis); | |
| 3041 #endif /* USDT2 */ | |
|
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|
3042 |
| 10405 | 3043 EventThreadSleep event; |
| 3044 | |
| 0 | 3045 if (millis == 0) { |
| 3046 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
| 3047 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
| 3048 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
| 3049 // for SOLARIS | |
| 3050 if (ConvertSleepToYield) { | |
| 3051 os::yield(); | |
| 3052 } else { | |
| 3053 ThreadState old_state = thread->osthread()->get_state(); | |
| 3054 thread->osthread()->set_state(SLEEPING); | |
| 3055 os::sleep(thread, MinSleepInterval, false); | |
| 3056 thread->osthread()->set_state(old_state); | |
| 3057 } | |
| 3058 } else { | |
| 3059 ThreadState old_state = thread->osthread()->get_state(); | |
| 3060 thread->osthread()->set_state(SLEEPING); | |
| 3061 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
| 3062 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
| 3063 // us while we were sleeping. We do not overwrite those. | |
| 3064 if (!HAS_PENDING_EXCEPTION) { | |
| 10405 | 3065 if (event.should_commit()) { |
| 3066 event.set_time(millis); | |
| 3067 event.commit(); | |
| 3068 } | |
| 4006 | 3069 #ifndef USDT2 |
|
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|
3070 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); |
| 4006 | 3071 #else /* USDT2 */ |
| 3072 HOTSPOT_THREAD_SLEEP_END( | |
| 3073 1); | |
| 3074 #endif /* USDT2 */ | |
| 0 | 3075 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
| 3076 // to properly restore the thread state. That's likely wrong. | |
| 3077 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 3078 } | |
| 3079 } | |
| 3080 thread->osthread()->set_state(old_state); | |
| 3081 } | |
| 10405 | 3082 if (event.should_commit()) { |
| 3083 event.set_time(millis); | |
| 3084 event.commit(); | |
| 3085 } | |
| 4006 | 3086 #ifndef USDT2 |
|
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|
3087 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); |
| 4006 | 3088 #else /* USDT2 */ |
| 3089 HOTSPOT_THREAD_SLEEP_END( | |
| 3090 0); | |
| 3091 #endif /* USDT2 */ | |
| 0 | 3092 JVM_END |
| 3093 | |
| 3094 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
| 3095 JVMWrapper("JVM_CurrentThread"); | |
| 3096 oop jthread = thread->threadObj(); | |
| 3097 assert (thread != NULL, "no current thread!"); | |
| 3098 return JNIHandles::make_local(env, jthread); | |
| 3099 JVM_END | |
| 3100 | |
| 3101 | |
| 3102 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
| 3103 JVMWrapper("JVM_CountStackFrames"); | |
| 3104 | |
| 3105 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3106 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3107 bool throw_illegal_thread_state = false; | |
| 3108 int count = 0; | |
| 3109 | |
| 3110 { | |
| 3111 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 3112 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 3113 // acquire of the lock | |
| 3114 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3115 | |
| 3116 if (thr == NULL) { | |
| 3117 // do nothing | |
| 3118 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
| 3119 // Check whether this java thread has been suspended already. If not, throws | |
| 3120 // IllegalThreadStateException. We defer to throw that exception until | |
| 3121 // Threads_lock is released since loading exception class has to leave VM. | |
| 3122 // The correct way to test a thread is actually suspended is | |
| 3123 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
| 3124 // the Threads_lock. The above tests are sufficient for our purposes | |
| 3125 // provided the walkability of the stack is stable - which it isn't | |
| 3126 // 100% but close enough for most practical purposes. | |
| 3127 throw_illegal_thread_state = true; | |
| 3128 } else { | |
| 3129 // Count all java activation, i.e., number of vframes | |
| 3130 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
| 3131 // Native frames are not counted | |
| 3132 if (!vfst.method()->is_native()) count++; | |
| 3133 } | |
| 3134 } | |
| 3135 } | |
| 3136 | |
| 3137 if (throw_illegal_thread_state) { | |
| 3138 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
| 3139 "this thread is not suspended"); | |
| 3140 } | |
| 3141 return count; | |
| 3142 JVM_END | |
| 3143 | |
| 3144 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
| 3145 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
| 3146 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
| 3147 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
| 3148 // outside the critical section. Threads_lock is hot so we want to minimize | |
| 3149 // the hold-time. A cleaner interface would be to decompose interrupt into | |
| 3150 // two steps. The 1st phase, performed under Threads_lock, would return | |
| 3151 // a closure that'd be invoked after Threads_lock was dropped. | |
| 3152 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
| 3153 // admit spurious wakeups. | |
| 3154 | |
| 3155 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
| 3156 JVMWrapper("JVM_Interrupt"); | |
| 3157 | |
| 3158 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3159 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3160 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 3161 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 3162 // acquire of the lock | |
| 3163 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3164 if (thr != NULL) { | |
| 3165 Thread::interrupt(thr); | |
| 3166 } | |
| 3167 JVM_END | |
| 3168 | |
| 3169 | |
| 3170 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
| 3171 JVMWrapper("JVM_IsInterrupted"); | |
| 3172 | |
| 3173 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3174 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3175 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 3176 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 3177 // acquire of the lock | |
| 3178 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3179 if (thr == NULL) { | |
| 3180 return JNI_FALSE; | |
| 3181 } else { | |
| 3182 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
| 3183 } | |
| 3184 JVM_END | |
| 3185 | |
| 3186 | |
| 3187 // Return true iff the current thread has locked the object passed in | |
| 3188 | |
| 3189 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
| 3190 JVMWrapper("JVM_HoldsLock"); | |
| 3191 assert(THREAD->is_Java_thread(), "sanity check"); | |
| 3192 if (obj == NULL) { | |
| 3193 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
| 3194 } | |
| 3195 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
| 3196 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
| 3197 JVM_END | |
| 3198 | |
| 3199 | |
| 3200 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
| 3201 JVMWrapper("JVM_DumpAllStacks"); | |
| 3202 VM_PrintThreads op; | |
| 3203 VMThread::execute(&op); | |
| 3204 if (JvmtiExport::should_post_data_dump()) { | |
| 3205 JvmtiExport::post_data_dump(); | |
| 3206 } | |
| 3207 JVM_END | |
| 3208 | |
| 4006 | 3209 JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name)) |
| 3210 JVMWrapper("JVM_SetNativeThreadName"); | |
| 3211 ResourceMark rm(THREAD); | |
| 3212 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3213 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 3214 // Thread naming only supported for the current thread, doesn't work for | |
| 3215 // target threads. | |
| 3216 if (Thread::current() == thr && !thr->has_attached_via_jni()) { | |
| 3217 // we don't set the name of an attached thread to avoid stepping | |
| 3218 // on other programs | |
| 3219 const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
| 3220 os::set_native_thread_name(thread_name); | |
| 3221 } | |
| 3222 JVM_END | |
| 0 | 3223 |
| 3224 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
| 3225 | |
| 3226 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
| 3227 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
| 3228 if (jthread->privileged_stack_top() == NULL) return false; | |
| 3229 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
| 3230 oop loader = jthread->privileged_stack_top()->class_loader(); | |
| 3231 if (loader == NULL) return true; | |
| 3232 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
| 3233 if (trusted) return true; | |
| 3234 } | |
| 3235 return false; | |
| 3236 } | |
| 3237 | |
| 3238 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
| 3239 JVMWrapper("JVM_CurrentLoadedClass"); | |
| 3240 ResourceMark rm(THREAD); | |
| 3241 | |
| 3242 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3243 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3244 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3245 if (trusted) return NULL; | |
| 3246 | |
|
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|
3247 Method* m = vfst.method(); |
| 0 | 3248 if (!m->is_native()) { |
|
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diff
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|
3249 InstanceKlass* holder = m->method_holder(); |
|
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8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
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|
3250 oop loader = holder->class_loader(); |
| 0 | 3251 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
|
6940
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diff
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|
3252 return (jclass) JNIHandles::make_local(env, holder->java_mirror()); |
| 0 | 3253 } |
| 3254 } | |
| 3255 } | |
| 3256 return NULL; | |
| 3257 JVM_END | |
| 3258 | |
| 3259 | |
| 3260 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
| 3261 JVMWrapper("JVM_CurrentClassLoader"); | |
| 3262 ResourceMark rm(THREAD); | |
| 3263 | |
| 3264 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3265 | |
| 3266 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3267 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3268 if (trusted) return NULL; | |
| 3269 | |
|
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changeset
|
3270 Method* m = vfst.method(); |
| 0 | 3271 if (!m->is_native()) { |
|
6940
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coleenp
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6831
diff
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|
3272 InstanceKlass* holder = m->method_holder(); |
| 0 | 3273 assert(holder->is_klass(), "just checking"); |
|
6940
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diff
changeset
|
3274 oop loader = holder->class_loader(); |
| 0 | 3275 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
| 3276 return JNIHandles::make_local(env, loader); | |
| 3277 } | |
| 3278 } | |
| 3279 } | |
| 3280 return NULL; | |
| 3281 JVM_END | |
| 3282 | |
| 3283 | |
| 3284 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
| 3285 JVMWrapper("JVM_GetClassContext"); | |
| 3286 ResourceMark rm(THREAD); | |
| 3287 JvmtiVMObjectAllocEventCollector oam; | |
|
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|
3288 vframeStream vfst(thread); |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
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|
3289 |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3290 if (SystemDictionary::reflect_CallerSensitive_klass() != NULL) { |
|
16885e702c88
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|
3291 // This must only be called from SecurityManager.getClassContext |
|
16885e702c88
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|
3292 Method* m = vfst.method(); |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
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|
3293 if (!(m->method_holder() == SystemDictionary::SecurityManager_klass() && |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
3294 m->name() == vmSymbols::getClassContext_name() && |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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8031
diff
changeset
|
3295 m->signature() == vmSymbols::void_class_array_signature())) { |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
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8031
diff
changeset
|
3296 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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|
3297 } |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
3298 } |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3299 |
|
16885e702c88
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diff
changeset
|
3300 // Collect method holders |
|
11001
c52abc8a0b08
8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
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10343
diff
changeset
|
3301 GrowableArray<KlassHandle>* klass_array = new GrowableArray<KlassHandle>(); |
|
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|
3302 for (; !vfst.at_end(); vfst.security_next()) { |
|
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|
3303 Method* m = vfst.method(); |
| 0 | 3304 // Native frames are not returned |
|
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|
3305 if (!m->is_ignored_by_security_stack_walk() && !m->is_native()) { |
|
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changeset
|
3306 Klass* holder = m->method_holder(); |
| 0 | 3307 assert(holder->is_klass(), "just checking"); |
|
11001
c52abc8a0b08
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10343
diff
changeset
|
3308 klass_array->append(holder); |
| 0 | 3309 } |
| 3310 } | |
| 3311 | |
| 3312 // Create result array of type [Ljava/lang/Class; | |
|
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8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
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changeset
|
3313 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), klass_array->length(), CHECK_NULL); |
| 0 | 3314 // Fill in mirrors corresponding to method holders |
|
11001
c52abc8a0b08
8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
drchase
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10343
diff
changeset
|
3315 for (int i = 0; i < klass_array->length(); i++) { |
|
c52abc8a0b08
8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
drchase
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10343
diff
changeset
|
3316 result->obj_at_put(i, klass_array->at(i)->java_mirror()); |
| 0 | 3317 } |
| 3318 | |
| 3319 return (jobjectArray) JNIHandles::make_local(env, result); | |
| 3320 JVM_END | |
| 3321 | |
| 3322 | |
| 3323 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
| 3324 JVMWrapper("JVM_ClassDepth"); | |
| 3325 ResourceMark rm(THREAD); | |
| 3326 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 3327 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
| 3328 | |
| 3329 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
coleenp
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2162
diff
changeset
|
3330 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2162
diff
changeset
|
3331 if (class_name_sym == NULL) { |
| 0 | 3332 return -1; |
| 3333 } | |
| 3334 | |
| 3335 int depth = 0; | |
| 3336 | |
| 3337 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3338 if (!vfst.method()->is_native()) { | |
|
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18fb7da42534
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coleenp
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6831
diff
changeset
|
3339 InstanceKlass* holder = vfst.method()->method_holder(); |
| 0 | 3340 assert(holder->is_klass(), "just checking"); |
|
6940
18fb7da42534
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coleenp
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6831
diff
changeset
|
3341 if (holder->name() == class_name_sym) { |
| 0 | 3342 return depth; |
| 3343 } | |
| 3344 depth++; | |
| 3345 } | |
| 3346 } | |
| 3347 return -1; | |
| 3348 JVM_END | |
| 3349 | |
| 3350 | |
| 3351 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
| 3352 JVMWrapper("JVM_ClassLoaderDepth"); | |
| 3353 ResourceMark rm(THREAD); | |
| 3354 int depth = 0; | |
| 3355 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3356 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
| 3357 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3358 if (trusted) return -1; | |
| 3359 | |
|
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|
3360 Method* m = vfst.method(); |
| 0 | 3361 if (!m->is_native()) { |
|
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diff
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|
3362 InstanceKlass* holder = m->method_holder(); |
| 0 | 3363 assert(holder->is_klass(), "just checking"); |
|
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diff
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|
3364 oop loader = holder->class_loader(); |
| 0 | 3365 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
| 3366 return depth; | |
| 3367 } | |
| 3368 depth++; | |
| 3369 } | |
| 3370 } | |
| 3371 return -1; | |
| 3372 JVM_END | |
| 3373 | |
| 3374 | |
| 3375 // java.lang.Package //////////////////////////////////////////////////////////////// | |
| 3376 | |
| 3377 | |
| 3378 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
| 3379 JVMWrapper("JVM_GetSystemPackage"); | |
| 3380 ResourceMark rm(THREAD); | |
| 3381 JvmtiVMObjectAllocEventCollector oam; | |
| 3382 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
| 3383 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
| 3384 return (jstring) JNIHandles::make_local(result); | |
| 3385 JVM_END | |
| 3386 | |
| 3387 | |
| 3388 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
| 3389 JVMWrapper("JVM_GetSystemPackages"); | |
| 3390 JvmtiVMObjectAllocEventCollector oam; | |
| 3391 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
| 3392 return (jobjectArray) JNIHandles::make_local(result); | |
| 3393 JVM_END | |
| 3394 | |
| 3395 | |
| 3396 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
| 3397 | |
|
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|
3398 bool force_verify_field_access(Klass* current_class, Klass* field_class, AccessFlags access, bool classloader_only) { |
| 0 | 3399 if (current_class == NULL) { |
| 3400 return true; | |
| 3401 } | |
| 3402 if ((current_class == field_class) || access.is_public()) { | |
| 3403 return true; | |
| 3404 } | |
| 3405 | |
| 3406 if (access.is_protected()) { | |
| 3407 // See if current_class is a subclass of field_class | |
| 6983 | 3408 if (current_class->is_subclass_of(field_class)) { |
| 0 | 3409 return true; |
| 3410 } | |
| 3411 } | |
| 3412 | |
|
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diff
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|
3413 return (!access.is_private() && InstanceKlass::cast(current_class)->is_same_class_package(field_class)); |
| 0 | 3414 } |
| 3415 | |
| 3416 | |
| 3417 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
| 3418 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
| 3419 JVMWrapper("JVM_AllocateNewObject"); | |
| 3420 JvmtiVMObjectAllocEventCollector oam; | |
| 3421 // Receiver is not used | |
| 3422 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
| 3423 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
| 3424 | |
| 3425 // Cannot instantiate primitive types | |
| 3426 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
| 3427 ResourceMark rm(THREAD); | |
| 3428 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3429 } | |
| 3430 | |
| 3431 // Arrays not allowed here, must use JVM_AllocateNewArray | |
| 6983 | 3432 if (java_lang_Class::as_Klass(curr_mirror)->oop_is_array() || |
| 3433 java_lang_Class::as_Klass(init_mirror)->oop_is_array()) { | |
| 0 | 3434 ResourceMark rm(THREAD); |
| 3435 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3436 } | |
| 3437 | |
|
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diff
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|
3438 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_Klass(curr_mirror)); |
|
da91efe96a93
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diff
changeset
|
3439 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_Klass(init_mirror)); |
| 0 | 3440 |
| 3441 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
| 3442 | |
| 3443 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
| 3444 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
| 3445 | |
| 3446 // Make sure klass is initialized, since we are about to instantiate one of them. | |
| 3447 curr_klass->initialize(CHECK_NULL); | |
| 3448 | |
| 3449 methodHandle m (THREAD, | |
| 3450 init_klass->find_method(vmSymbols::object_initializer_name(), | |
| 3451 vmSymbols::void_method_signature())); | |
| 3452 if (m.is_null()) { | |
| 3453 ResourceMark rm(THREAD); | |
| 3454 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
| 6983 | 3455 Method::name_and_sig_as_C_string(init_klass(), |
| 0 | 3456 vmSymbols::object_initializer_name(), |
| 3457 vmSymbols::void_method_signature())); | |
| 3458 } | |
| 3459 | |
| 3460 if (curr_klass == init_klass && !m->is_public()) { | |
| 3461 // Calling the constructor for class 'curr_klass'. | |
| 3462 // Only allow calls to a public no-arg constructor. | |
| 3463 // This path corresponds to creating an Externalizable object. | |
| 3464 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3465 } | |
| 3466 | |
| 3467 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
| 3468 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
| 3469 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3470 } | |
| 3471 | |
| 3472 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
| 3473 // Call constructor m. This might call a constructor higher up in the hierachy | |
| 3474 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
| 3475 | |
| 3476 return JNIHandles::make_local(obj()); | |
| 3477 JVM_END | |
| 3478 | |
| 3479 | |
| 3480 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
| 3481 JVMWrapper("JVM_AllocateNewArray"); | |
| 3482 JvmtiVMObjectAllocEventCollector oam; | |
| 3483 oop mirror = JNIHandles::resolve_non_null(currClass); | |
| 3484 | |
| 3485 if (java_lang_Class::is_primitive(mirror)) { | |
| 3486 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3487 } | |
|
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diff
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|
3488 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 3489 oop result; |
| 3490 | |
|
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diff
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|
3491 if (k->oop_is_typeArray()) { |
| 0 | 3492 // typeArray |
|
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
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6725
diff
changeset
|
3493 result = TypeArrayKlass::cast(k)->allocate(length, CHECK_NULL); |
|
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diff
changeset
|
3494 } else if (k->oop_is_objArray()) { |
| 0 | 3495 // objArray |
|
6831
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coleenp
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6725
diff
changeset
|
3496 ObjArrayKlass* oak = ObjArrayKlass::cast(k); |
| 0 | 3497 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) |
| 3498 result = oak->allocate(length, CHECK_NULL); | |
| 3499 } else { | |
| 3500 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3501 } | |
| 3502 return JNIHandles::make_local(env, result); | |
| 3503 JVM_END | |
| 3504 | |
| 3505 | |
| 3506 // Return the first non-null class loader up the execution stack, or null | |
| 3507 // if only code from the null class loader is on the stack. | |
| 3508 | |
| 3509 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
| 3510 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3511 // UseNewReflection | |
| 3512 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
|
6940
18fb7da42534
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coleenp
parents:
6831
diff
changeset
|
3513 oop loader = vfst.method()->method_holder()->class_loader(); |
| 0 | 3514 if (loader != NULL) { |
| 3515 return JNIHandles::make_local(env, loader); | |
| 3516 } | |
| 3517 } | |
| 3518 return NULL; | |
| 3519 JVM_END | |
| 3520 | |
| 3521 | |
| 3522 // Load a class relative to the most recent class on the stack with a non-null | |
| 3523 // classloader. | |
| 3524 // This function has been deprecated and should not be considered part of the | |
| 3525 // specified JVM interface. | |
| 3526 | |
| 3527 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
| 3528 jclass currClass, jstring currClassName)) | |
| 3529 JVMWrapper("JVM_LoadClass0"); | |
| 3530 // Receiver is not used | |
| 3531 ResourceMark rm(THREAD); | |
| 3532 | |
| 3533 // Class name argument is not guaranteed to be in internal format | |
| 3534 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
| 3535 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
| 3536 | |
| 3537 const char* str = java_lang_String::as_utf8_string(string()); | |
| 3538 | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
3539 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
| 0 | 3540 // It's impossible to create this class; the name cannot fit |
| 3541 // into the constant pool. | |
| 3542 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
| 3543 } | |
| 3544 | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2162
diff
changeset
|
3545 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
| 0 | 3546 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
| 3547 // Find the most recent class on the stack with a non-null classloader | |
| 3548 oop loader = NULL; | |
| 3549 oop protection_domain = NULL; | |
| 3550 if (curr_klass.is_null()) { | |
| 3551 for (vframeStream vfst(thread); | |
| 3552 !vfst.at_end() && loader == NULL; | |
| 3553 vfst.next()) { | |
| 3554 if (!vfst.method()->is_native()) { | |
|
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3555 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
|
3556 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
|
3557 protection_domain = holder->protection_domain(); |
| 0 | 3558 } |
| 3559 } | |
| 3560 } else { | |
|
6725
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diff
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|
3561 Klass* curr_klass_oop = java_lang_Class::as_Klass(curr_klass()); |
|
da91efe96a93
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|
3562 loader = InstanceKlass::cast(curr_klass_oop)->class_loader(); |
|
da91efe96a93
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6271
diff
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|
3563 protection_domain = InstanceKlass::cast(curr_klass_oop)->protection_domain(); |
| 0 | 3564 } |
| 3565 Handle h_loader(THREAD, loader); | |
| 3566 Handle h_prot (THREAD, protection_domain); | |
|
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3567 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
|
3568 false, thread); |
|
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3569 if (TraceClassResolution && result != NULL) { |
|
6725
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6964458: Reimplement class meta-data storage to use native memory
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6271
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changeset
|
3570 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
|
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3571 } |
|
715dceaa89b7
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acorn
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579
diff
changeset
|
3572 return result; |
| 0 | 3573 JVM_END |
| 3574 | |
| 3575 | |
| 3576 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
| 3577 | |
| 3578 | |
| 3579 // resolve array handle and check arguments | |
| 3580 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
| 3581 if (arr == NULL) { | |
| 3582 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 3583 } | |
| 3584 oop a = JNIHandles::resolve_non_null(arr); | |
|
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diff
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|
3585 if (!a->is_array() || (type_array_only && !a->is_typeArray())) { |
| 0 | 3586 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); |
| 3587 } | |
| 3588 return arrayOop(a); | |
| 3589 } | |
| 3590 | |
| 3591 | |
| 3592 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
| 3593 JVMWrapper("JVM_GetArrayLength"); | |
| 3594 arrayOop a = check_array(env, arr, false, CHECK_0); | |
| 3595 return a->length(); | |
| 3596 JVM_END | |
| 3597 | |
| 3598 | |
| 3599 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
| 3600 JVMWrapper("JVM_Array_Get"); | |
| 3601 JvmtiVMObjectAllocEventCollector oam; | |
| 3602 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
| 3603 jvalue value; | |
| 3604 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
| 3605 oop box = Reflection::box(&value, type, CHECK_NULL); | |
| 3606 return JNIHandles::make_local(env, box); | |
| 3607 JVM_END | |
| 3608 | |
| 3609 | |
| 3610 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
| 3611 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
| 3612 jvalue value; | |
| 3613 value.i = 0; // to initialize value before getting used in CHECK | |
| 3614 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
| 3615 assert(a->is_typeArray(), "just checking"); | |
| 3616 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
| 3617 BasicType wide_type = (BasicType) wCode; | |
| 3618 if (type != wide_type) { | |
| 3619 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
| 3620 } | |
| 3621 return value; | |
| 3622 JVM_END | |
| 3623 | |
| 3624 | |
| 3625 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
| 3626 JVMWrapper("JVM_SetArrayElement"); | |
| 3627 arrayOop a = check_array(env, arr, false, CHECK); | |
| 3628 oop box = JNIHandles::resolve(val); | |
| 3629 jvalue value; | |
| 3630 value.i = 0; // to initialize value before getting used in CHECK | |
| 3631 BasicType value_type; | |
| 3632 if (a->is_objArray()) { | |
| 3633 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
| 3634 value_type = Reflection::unbox_for_regular_object(box, &value); | |
| 3635 } else { | |
| 3636 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
| 3637 } | |
| 3638 Reflection::array_set(&value, a, index, value_type, CHECK); | |
| 3639 JVM_END | |
| 3640 | |
| 3641 | |
| 3642 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
| 3643 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
| 3644 arrayOop a = check_array(env, arr, true, CHECK); | |
| 3645 assert(a->is_typeArray(), "just checking"); | |
| 3646 BasicType value_type = (BasicType) vCode; | |
| 3647 Reflection::array_set(&v, a, index, value_type, CHECK); | |
| 3648 JVM_END | |
| 3649 | |
| 3650 | |
| 3651 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
| 3652 JVMWrapper("JVM_NewArray"); | |
| 3653 JvmtiVMObjectAllocEventCollector oam; | |
| 3654 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3655 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
| 3656 return JNIHandles::make_local(env, result); | |
| 3657 JVM_END | |
| 3658 | |
| 3659 | |
| 3660 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
| 3661 JVMWrapper("JVM_NewMultiArray"); | |
| 3662 JvmtiVMObjectAllocEventCollector oam; | |
| 3663 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
| 3664 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3665 assert(dim_array->is_typeArray(), "just checking"); | |
| 3666 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
| 3667 return JNIHandles::make_local(env, result); | |
| 3668 JVM_END | |
| 3669 | |
| 3670 | |
| 3671 // Networking library support //////////////////////////////////////////////////////////////////// | |
| 3672 | |
| 3673 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
| 3674 JVMWrapper("JVM_InitializeSocketLibrary"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3675 return 0; |
| 0 | 3676 JVM_END |
| 3677 | |
| 3678 | |
| 3679 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
| 3680 JVMWrapper("JVM_Socket"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3681 return os::socket(domain, type, protocol); |
| 0 | 3682 JVM_END |
| 3683 | |
| 3684 | |
| 3685 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
| 3686 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
| 3687 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3688 return os::socket_close(fd); |
| 0 | 3689 JVM_END |
| 3690 | |
| 3691 | |
| 3692 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
| 3693 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
| 3694 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3695 return os::socket_shutdown(fd, howto); |
| 0 | 3696 JVM_END |
| 3697 | |
| 3698 | |
| 3699 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3700 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
| 3701 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3702 return os::recv(fd, buf, (size_t)nBytes, (uint)flags); |
| 0 | 3703 JVM_END |
| 3704 | |
| 3705 | |
| 3706 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3707 JVMWrapper2("JVM_Send (0x%x)", fd); | |
| 3708 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3709 return os::send(fd, buf, (size_t)nBytes, (uint)flags); |
| 0 | 3710 JVM_END |
| 3711 | |
| 3712 | |
| 3713 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
| 3714 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
| 3715 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3716 return os::timeout(fd, timeout); |
| 0 | 3717 JVM_END |
| 3718 | |
| 3719 | |
| 3720 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
| 3721 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
| 3722 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3723 return os::listen(fd, count); |
| 0 | 3724 JVM_END |
| 3725 | |
| 3726 | |
| 3727 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
| 3728 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
| 3729 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3730 return os::connect(fd, him, (socklen_t)len); |
| 0 | 3731 JVM_END |
| 3732 | |
| 3733 | |
| 3734 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
| 3735 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
| 3736 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3737 return os::bind(fd, him, (socklen_t)len); |
| 0 | 3738 JVM_END |
| 3739 | |
| 3740 | |
| 3741 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
| 3742 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
| 3743 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3744 socklen_t socklen = (socklen_t)(*len); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3745 jint result = os::accept(fd, him, &socklen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3746 *len = (jint)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3747 return result; |
| 0 | 3748 JVM_END |
| 3749 | |
| 3750 | |
| 3751 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
| 3752 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
| 3753 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3754 socklen_t socklen = (socklen_t)(*fromlen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3755 jint result = os::recvfrom(fd, buf, (size_t)nBytes, (uint)flags, from, &socklen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3756 *fromlen = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3757 return result; |
| 0 | 3758 JVM_END |
| 3759 | |
| 3760 | |
| 3761 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
| 3762 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
| 3763 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3764 socklen_t socklen = (socklen_t)(*len); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3765 jint result = os::get_sock_name(fd, him, &socklen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3766 *len = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3767 return result; |
| 0 | 3768 JVM_END |
| 3769 | |
| 3770 | |
| 3771 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
| 3772 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
| 3773 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3774 return os::sendto(fd, buf, (size_t)len, (uint)flags, to, (socklen_t)tolen); |
| 0 | 3775 JVM_END |
| 3776 | |
| 3777 | |
| 3778 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
| 3779 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
| 3780 //%note jvm_r6 | |
|
1980
828eafbd85cc
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ikrylov
parents:
1972
diff
changeset
|
3781 return os::socket_available(fd, pbytes); |
| 0 | 3782 JVM_END |
| 3783 | |
| 3784 | |
| 3785 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
| 3786 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
| 3787 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3788 socklen_t socklen = (socklen_t)(*optlen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3789 jint result = os::get_sock_opt(fd, level, optname, optval, &socklen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3790 *optlen = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3791 return result; |
| 0 | 3792 JVM_END |
| 3793 | |
| 3794 | |
| 3795 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
| 3796 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
| 3797 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3798 return os::set_sock_opt(fd, level, optname, optval, (socklen_t)optlen); |
| 0 | 3799 JVM_END |
| 3800 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3801 |
| 0 | 3802 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) |
| 3803 JVMWrapper("JVM_GetHostName"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3804 return os::get_host_name(name, namelen); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3805 JVM_END |
| 0 | 3806 |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3807 |
| 0 | 3808 // Library support /////////////////////////////////////////////////////////////////////////// |
| 3809 | |
| 3810 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
| 3811 //%note jvm_ct | |
| 3812 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
| 3813 char ebuf[1024]; | |
| 3814 void *load_result; | |
| 3815 { | |
| 3816 ThreadToNativeFromVM ttnfvm(thread); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3817 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
| 0 | 3818 } |
| 3819 if (load_result == NULL) { | |
| 3820 char msg[1024]; | |
| 3821 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
| 3822 // Since 'ebuf' may contain a string encoded using | |
| 3823 // platform encoding scheme, we need to pass | |
| 3824 // Exceptions::unsafe_to_utf8 to the new_exception method | |
| 3825 // as the last argument. See bug 6367357. | |
| 3826 Handle h_exception = | |
| 3827 Exceptions::new_exception(thread, | |
| 3828 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
| 3829 msg, Exceptions::unsafe_to_utf8); | |
| 3830 | |
| 3831 THROW_HANDLE_0(h_exception); | |
| 3832 } | |
| 3833 return load_result; | |
| 3834 JVM_END | |
| 3835 | |
| 3836 | |
| 3837 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
| 3838 JVMWrapper("JVM_UnloadLibrary"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3839 os::dll_unload(handle); |
| 0 | 3840 JVM_END |
| 3841 | |
| 3842 | |
| 3843 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
| 3844 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3845 return os::dll_lookup(handle, name); |
| 0 | 3846 JVM_END |
| 3847 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3848 |
| 0 | 3849 // Floating point support //////////////////////////////////////////////////////////////////// |
| 3850 | |
| 3851 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
| 3852 JVMWrapper("JVM_IsNaN"); | |
| 3853 return g_isnan(a); | |
| 3854 JVM_END | |
| 3855 | |
| 3856 | |
| 3857 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
| 3858 | |
| 3859 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
| 3860 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
| 3861 return Threads::is_supported_jni_version_including_1_1(version); | |
| 3862 JVM_END | |
| 3863 | |
| 3864 | |
| 3865 // String support /////////////////////////////////////////////////////////////////////////// | |
| 3866 | |
| 3867 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
| 3868 JVMWrapper("JVM_InternString"); | |
| 3869 JvmtiVMObjectAllocEventCollector oam; | |
| 3870 if (str == NULL) return NULL; | |
| 3871 oop string = JNIHandles::resolve_non_null(str); | |
| 3872 oop result = StringTable::intern(string, CHECK_NULL); | |
| 3873 return (jstring) JNIHandles::make_local(env, result); | |
| 3874 JVM_END | |
| 3875 | |
| 3876 | |
| 3877 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
| 3878 | |
| 3879 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
| 3880 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
| 3881 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
| 3882 // that only works with java threads. | |
| 3883 | |
| 3884 | |
| 3885 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
| 3886 VM_Exit::block_if_vm_exited(); | |
| 3887 JVMWrapper("JVM_RawMonitorCreate"); | |
| 3888 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
| 3889 } | |
| 3890 | |
| 3891 | |
| 3892 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
| 3893 VM_Exit::block_if_vm_exited(); | |
| 3894 JVMWrapper("JVM_RawMonitorDestroy"); | |
| 3895 delete ((Mutex*) mon); | |
| 3896 } | |
| 3897 | |
| 3898 | |
| 3899 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
| 3900 VM_Exit::block_if_vm_exited(); | |
| 3901 JVMWrapper("JVM_RawMonitorEnter"); | |
| 3902 ((Mutex*) mon)->jvm_raw_lock(); | |
| 3903 return 0; | |
| 3904 } | |
| 3905 | |
| 3906 | |
| 3907 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
| 3908 VM_Exit::block_if_vm_exited(); | |
| 3909 JVMWrapper("JVM_RawMonitorExit"); | |
| 3910 ((Mutex*) mon)->jvm_raw_unlock(); | |
| 3911 } | |
| 3912 | |
| 3913 | |
| 3914 // Support for Serialization | |
| 3915 | |
| 3916 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
| 3917 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
| 3918 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
| 3919 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
| 3920 | |
| 3921 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
| 3922 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
| 3923 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
| 3924 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
| 3925 | |
| 3926 | |
| 3927 void initialize_converter_functions() { | |
| 3928 if (JDK_Version::is_gte_jdk14x_version()) { | |
| 3929 // These functions only exist for compatibility with 1.3.1 and earlier | |
| 3930 return; | |
| 3931 } | |
| 3932 | |
| 3933 // called from universe_post_init() | |
| 3934 assert( | |
| 3935 int_bits_to_float_fn == NULL && | |
| 3936 long_bits_to_double_fn == NULL && | |
| 3937 float_to_int_bits_fn == NULL && | |
| 3938 double_to_long_bits_fn == NULL , | |
| 3939 "initialization done twice" | |
| 3940 ); | |
| 3941 // initialize | |
| 3942 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
| 3943 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
| 3944 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
| 3945 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
| 3946 // verify | |
| 3947 assert( | |
| 3948 int_bits_to_float_fn != NULL && | |
| 3949 long_bits_to_double_fn != NULL && | |
| 3950 float_to_int_bits_fn != NULL && | |
| 3951 double_to_long_bits_fn != NULL , | |
| 3952 "initialization failed" | |
| 3953 ); | |
| 3954 } | |
| 3955 | |
| 3956 | |
| 3957 // Serialization | |
| 3958 JVM_ENTRY(void, JVM_SetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
| 3959 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
| 3960 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
| 3961 | |
| 3962 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
| 3963 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
| 3964 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
| 3965 oop o = JNIHandles::resolve(obj); | |
| 3966 | |
| 3967 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
| 3968 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 3969 } | |
| 3970 | |
| 3971 jsize nfids = fids->length(); | |
| 3972 if (nfids == 0) return; | |
| 3973 | |
| 3974 if (tcodes->length() < nfids) { | |
| 3975 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
| 3976 } | |
| 3977 | |
| 3978 jsize off = 0; | |
| 3979 /* loop through fields, setting values */ | |
| 3980 for (jsize i = 0; i < nfids; i++) { | |
| 3981 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
| 3982 int field_offset; | |
| 3983 if (fid != NULL) { | |
| 3984 // NULL is a legal value for fid, but retrieving the field offset | |
| 3985 // trigger assertion in that case | |
| 3986 field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 3987 } | |
| 3988 | |
| 3989 switch (tcodes->char_at(i)) { | |
| 3990 case 'Z': | |
| 3991 if (fid != NULL) { | |
| 3992 jboolean val = (dbuf->byte_at(off) != 0) ? JNI_TRUE : JNI_FALSE; | |
| 3993 o->bool_field_put(field_offset, val); | |
| 3994 } | |
| 3995 off++; | |
| 3996 break; | |
| 3997 | |
| 3998 case 'B': | |
| 3999 if (fid != NULL) { | |
| 4000 o->byte_field_put(field_offset, dbuf->byte_at(off)); | |
| 4001 } | |
| 4002 off++; | |
| 4003 break; | |
| 4004 | |
| 4005 case 'C': | |
| 4006 if (fid != NULL) { | |
| 4007 jchar val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
| 4008 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
| 4009 o->char_field_put(field_offset, val); | |
| 4010 } | |
| 4011 off += 2; | |
| 4012 break; | |
| 4013 | |
| 4014 case 'S': | |
| 4015 if (fid != NULL) { | |
| 4016 jshort val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
| 4017 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
| 4018 o->short_field_put(field_offset, val); | |
| 4019 } | |
| 4020 off += 2; | |
| 4021 break; | |
| 4022 | |
| 4023 case 'I': | |
| 4024 if (fid != NULL) { | |
| 4025 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
| 4026 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
| 4027 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
| 4028 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
| 4029 o->int_field_put(field_offset, ival); | |
| 4030 } | |
| 4031 off += 4; | |
| 4032 break; | |
| 4033 | |
| 4034 case 'F': | |
| 4035 if (fid != NULL) { | |
| 4036 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
| 4037 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
| 4038 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
| 4039 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
| 4040 jfloat fval = (*int_bits_to_float_fn)(env, NULL, ival); | |
| 4041 o->float_field_put(field_offset, fval); | |
| 4042 } | |
| 4043 off += 4; | |
| 4044 break; | |
| 4045 | |
| 4046 case 'J': | |
| 4047 if (fid != NULL) { | |
| 4048 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
| 4049 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
| 4050 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
| 4051 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
| 4052 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
| 4053 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
| 4054 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
| 4055 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
| 4056 o->long_field_put(field_offset, lval); | |
| 4057 } | |
| 4058 off += 8; | |
| 4059 break; | |
| 4060 | |
| 4061 case 'D': | |
| 4062 if (fid != NULL) { | |
| 4063 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
| 4064 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
| 4065 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
| 4066 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
| 4067 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
| 4068 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
| 4069 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
| 4070 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
| 4071 jdouble dval = (*long_bits_to_double_fn)(env, NULL, lval); | |
| 4072 o->double_field_put(field_offset, dval); | |
| 4073 } | |
| 4074 off += 8; | |
| 4075 break; | |
| 4076 | |
| 4077 default: | |
| 4078 // Illegal typecode | |
| 4079 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
| 4080 } | |
| 4081 } | |
| 4082 JVM_END | |
| 4083 | |
| 4084 | |
| 4085 JVM_ENTRY(void, JVM_GetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
| 4086 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
| 4087 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
| 4088 | |
| 4089 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
| 4090 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
| 4091 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
| 4092 oop o = JNIHandles::resolve(obj); | |
| 4093 | |
| 4094 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
| 4095 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 4096 } | |
| 4097 | |
| 4098 jsize nfids = fids->length(); | |
| 4099 if (nfids == 0) return; | |
| 4100 | |
| 4101 if (tcodes->length() < nfids) { | |
| 4102 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
| 4103 } | |
| 4104 | |
| 4105 /* loop through fields, fetching values */ | |
| 4106 jsize off = 0; | |
| 4107 for (jsize i = 0; i < nfids; i++) { | |
| 4108 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
| 4109 if (fid == NULL) { | |
| 4110 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 4111 } | |
| 4112 int field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 4113 | |
| 4114 switch (tcodes->char_at(i)) { | |
| 4115 case 'Z': | |
| 4116 { | |
| 4117 jboolean val = o->bool_field(field_offset); | |
| 4118 dbuf->byte_at_put(off++, (val != 0) ? 1 : 0); | |
| 4119 } | |
| 4120 break; | |
| 4121 | |
| 4122 case 'B': | |
| 4123 dbuf->byte_at_put(off++, o->byte_field(field_offset)); | |
| 4124 break; | |
| 4125 | |
| 4126 case 'C': | |
| 4127 { | |
| 4128 jchar val = o->char_field(field_offset); | |
| 4129 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 4130 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 4131 } | |
| 4132 break; | |
| 4133 | |
| 4134 case 'S': | |
| 4135 { | |
| 4136 jshort val = o->short_field(field_offset); | |
| 4137 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 4138 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 4139 } | |
| 4140 break; | |
| 4141 | |
| 4142 case 'I': | |
| 4143 { | |
| 4144 jint val = o->int_field(field_offset); | |
| 4145 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
| 4146 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
| 4147 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 4148 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 4149 } | |
| 4150 break; | |
| 4151 | |
| 4152 case 'F': | |
| 4153 { | |
| 4154 jfloat fval = o->float_field(field_offset); | |
| 4155 jint ival = (*float_to_int_bits_fn)(env, NULL, fval); | |
| 4156 dbuf->byte_at_put(off++, (ival >> 24) & 0xFF); | |
| 4157 dbuf->byte_at_put(off++, (ival >> 16) & 0xFF); | |
| 4158 dbuf->byte_at_put(off++, (ival >> 8) & 0xFF); | |
| 4159 dbuf->byte_at_put(off++, (ival >> 0) & 0xFF); | |
| 4160 } | |
| 4161 break; | |
| 4162 | |
| 4163 case 'J': | |
| 4164 { | |
| 4165 jlong val = o->long_field(field_offset); | |
| 4166 dbuf->byte_at_put(off++, (val >> 56) & 0xFF); | |
| 4167 dbuf->byte_at_put(off++, (val >> 48) & 0xFF); | |
| 4168 dbuf->byte_at_put(off++, (val >> 40) & 0xFF); | |
| 4169 dbuf->byte_at_put(off++, (val >> 32) & 0xFF); | |
| 4170 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
| 4171 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
| 4172 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 4173 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 4174 } | |
| 4175 break; | |
| 4176 | |
| 4177 case 'D': | |
| 4178 { | |
| 4179 jdouble dval = o->double_field(field_offset); | |
| 4180 jlong lval = (*double_to_long_bits_fn)(env, NULL, dval); | |
| 4181 dbuf->byte_at_put(off++, (lval >> 56) & 0xFF); | |
| 4182 dbuf->byte_at_put(off++, (lval >> 48) & 0xFF); | |
| 4183 dbuf->byte_at_put(off++, (lval >> 40) & 0xFF); | |
| 4184 dbuf->byte_at_put(off++, (lval >> 32) & 0xFF); | |
| 4185 dbuf->byte_at_put(off++, (lval >> 24) & 0xFF); | |
| 4186 dbuf->byte_at_put(off++, (lval >> 16) & 0xFF); | |
| 4187 dbuf->byte_at_put(off++, (lval >> 8) & 0xFF); | |
| 4188 dbuf->byte_at_put(off++, (lval >> 0) & 0xFF); | |
| 4189 } | |
| 4190 break; | |
| 4191 | |
| 4192 default: | |
| 4193 // Illegal typecode | |
| 4194 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
| 4195 } | |
| 4196 } | |
| 4197 JVM_END | |
| 4198 | |
| 4199 | |
| 4200 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
| 4201 | |
|
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|
4202 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS) { |
| 0 | 4203 // Security Note: |
| 4204 // The Java level wrapper will perform the necessary security check allowing | |
| 4205 // us to pass the NULL as the initiating class loader. | |
|
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4206 Klass* klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); |
|
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|
4207 |
| 0 | 4208 KlassHandle klass_handle(THREAD, klass); |
| 4209 // Check if we should initialize the class | |
| 4210 if (init && klass_handle->oop_is_instance()) { | |
| 4211 klass_handle->initialize(CHECK_NULL); | |
| 4212 } | |
| 4213 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
| 4214 } | |
| 4215 | |
| 4216 | |
| 4217 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
| 4218 | |
| 4219 #ifndef PRODUCT | |
| 4220 | |
| 4221 extern "C" { | |
| 4222 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
| 4223 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
| 4224 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
| 4225 } | |
| 4226 | |
| 4227 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
| 4228 JVMWrapper("JVM_AccessBoolVMFlag"); | |
| 4229 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, INTERNAL); | |
| 4230 JVM_END | |
| 4231 | |
| 4232 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
| 4233 JVMWrapper("JVM_AccessVMIntFlag"); | |
| 4234 intx v; | |
| 4235 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, INTERNAL); | |
| 4236 *value = (jint)v; | |
| 4237 return result; | |
| 4238 JVM_END | |
| 4239 | |
| 4240 | |
| 4241 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
| 4242 JVMWrapper("JVM_VMBreakPoint"); | |
| 4243 oop the_obj = JNIHandles::resolve(obj); | |
| 4244 BREAKPOINT; | |
| 4245 JVM_END | |
| 4246 | |
| 4247 | |
| 4248 #endif | |
| 4249 | |
| 4250 | |
| 4251 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4252 | |
| 4253 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
| 4254 JVMWrapper("JVM_InvokeMethod"); | |
| 4255 Handle method_handle; | |
| 4256 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
| 4257 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
| 4258 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
| 4259 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4260 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
| 4261 jobject res = JNIHandles::make_local(env, result); | |
| 4262 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4263 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
| 4264 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
| 4265 if (java_lang_Class::is_primitive(ret_type)) { | |
| 4266 // Only for primitive type vm allocates memory for java object. | |
| 4267 // See box() method. | |
| 4268 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4269 } | |
| 4270 } | |
| 4271 return res; | |
| 4272 } else { | |
| 4273 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
| 4274 } | |
| 4275 JVM_END | |
| 4276 | |
| 4277 | |
| 4278 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
| 4279 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
| 4280 oop constructor_mirror = JNIHandles::resolve(c); | |
| 4281 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4282 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
| 4283 jobject res = JNIHandles::make_local(env, result); | |
| 4284 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4285 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4286 } | |
| 4287 return res; | |
| 4288 JVM_END | |
| 4289 | |
| 4290 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4291 | |
| 4292 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
| 4293 JVMWrapper("JVM_SupportsCX8"); | |
| 4294 return VM_Version::supports_cx8(); | |
| 4295 JVM_END | |
| 4296 | |
| 4297 | |
| 4298 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
| 4299 JVMWrapper("JVM_CX8Field"); | |
| 4300 jlong res; | |
| 4301 oop o = JNIHandles::resolve(obj); | |
| 4302 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 4303 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
| 4304 | |
| 4305 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
| 4306 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
| 4307 | |
| 4308 return res == oldVal; | |
| 4309 JVM_END | |
| 4310 | |
|
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|
4311 // DTrace /////////////////////////////////////////////////////////////////// |
|
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|
4312 |
|
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|
4313 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
|
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|
4314 JVMWrapper("JVM_DTraceGetVersion"); |
|
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diff
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|
4315 return (jint)JVM_TRACING_DTRACE_VERSION; |
|
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|
4316 JVM_END |
|
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|
4317 |
|
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diff
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|
4318 JVM_ENTRY(jlong,JVM_DTraceActivate( |
|
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|
4319 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
|
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|
4320 JVM_DTraceProvider* providers)) |
|
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|
4321 JVMWrapper("JVM_DTraceActivate"); |
|
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|
4322 return DTraceJSDT::activate( |
|
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|
4323 version, module_name, providers_count, providers, CHECK_0); |
|
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|
4324 JVM_END |
|
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|
4325 |
|
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|
4326 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
|
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|
4327 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
|
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|
4328 return DTraceJSDT::is_probe_enabled(method); |
|
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|
4329 JVM_END |
|
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|
4330 |
|
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|
4331 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
|
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|
4332 JVMWrapper("JVM_DTraceDispose"); |
|
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|
4333 DTraceJSDT::dispose(handle); |
|
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|
4334 JVM_END |
|
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|
4335 |
|
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|
4336 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
|
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|
4337 JVMWrapper("JVM_DTraceIsSupported"); |
|
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|
4338 return DTraceJSDT::is_supported(); |
|
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|
4339 JVM_END |
|
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|
4340 |
| 0 | 4341 // Returns an array of all live Thread objects (VM internal JavaThreads, |
| 4342 // jvmti agent threads, and JNI attaching threads are skipped) | |
| 4343 // See CR 6404306 regarding JNI attaching threads | |
| 4344 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
| 4345 ResourceMark rm(THREAD); | |
| 4346 ThreadsListEnumerator tle(THREAD, false, false); | |
| 4347 JvmtiVMObjectAllocEventCollector oam; | |
| 4348 | |
| 4349 int num_threads = tle.num_threads(); | |
| 1142 | 4350 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
| 0 | 4351 objArrayHandle threads_ah(THREAD, r); |
| 4352 | |
| 4353 for (int i = 0; i < num_threads; i++) { | |
| 4354 Handle h = tle.get_threadObj(i); | |
| 4355 threads_ah->obj_at_put(i, h()); | |
| 4356 } | |
| 4357 | |
| 4358 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
| 4359 JVM_END | |
| 4360 | |
| 4361 | |
| 4362 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
| 4363 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
| 4364 // the corresponding entry in the given threads array | |
| 4365 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
| 4366 JVMWrapper("JVM_DumpThreads"); | |
| 4367 JvmtiVMObjectAllocEventCollector oam; | |
| 4368 | |
| 4369 // Check if threads is null | |
| 4370 if (threads == NULL) { | |
| 4371 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4372 } | |
| 4373 | |
| 4374 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
| 4375 objArrayHandle ah(THREAD, a); | |
| 4376 int num_threads = ah->length(); | |
| 4377 // check if threads is non-empty array | |
| 4378 if (num_threads == 0) { | |
| 4379 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
| 4380 } | |
| 4381 | |
| 4382 // check if threads is not an array of objects of Thread class | |
|
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|
4383 Klass* k = ObjArrayKlass::cast(ah->klass())->element_klass(); |
| 1142 | 4384 if (k != SystemDictionary::Thread_klass()) { |
| 0 | 4385 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
| 4386 } | |
| 4387 | |
| 4388 ResourceMark rm(THREAD); | |
| 4389 | |
| 4390 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
| 4391 for (int i = 0; i < num_threads; i++) { | |
| 4392 oop thread_obj = ah->obj_at(i); | |
| 4393 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
| 4394 thread_handle_array->append(h); | |
| 4395 } | |
| 4396 | |
| 4397 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
| 4398 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
| 4399 | |
| 4400 JVM_END | |
| 4401 | |
| 4402 // JVM monitoring and management support | |
| 4403 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
| 4404 return Management::get_jmm_interface(version); | |
| 4405 JVM_END | |
| 4406 | |
| 4407 // com.sun.tools.attach.VirtualMachine agent properties support | |
| 4408 // | |
| 4409 // Initialize the agent properties with the properties maintained in the VM | |
| 4410 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
| 4411 JVMWrapper("JVM_InitAgentProperties"); | |
| 4412 ResourceMark rm; | |
| 4413 | |
| 4414 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
| 4415 | |
| 4416 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
| 4417 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
| 4418 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
| 4419 return properties; | |
| 4420 JVM_END | |
| 4421 | |
| 4422 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
| 4423 { | |
| 4424 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
| 4425 JvmtiVMObjectAllocEventCollector oam; | |
| 4426 | |
| 4427 if (ofClass == NULL) { | |
| 4428 return NULL; | |
| 4429 } | |
| 4430 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
| 4431 // Special handling for primitive objects | |
| 4432 if (java_lang_Class::is_primitive(mirror())) { | |
| 4433 return NULL; | |
| 4434 } | |
|
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4435 Klass* k = java_lang_Class::as_Klass(mirror()); |
| 6983 | 4436 if (!k->oop_is_instance()) { |
| 0 | 4437 return NULL; |
| 4438 } | |
| 4439 instanceKlassHandle ik_h(THREAD, k); | |
| 4440 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
| 4441 if (encl_method_class_idx == 0) { | |
| 4442 return NULL; | |
| 4443 } | |
| 1142 | 4444 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
| 0 | 4445 objArrayHandle dest(THREAD, dest_o); |
|
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4446 Klass* enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); |
| 6983 | 4447 dest->obj_at_put(0, enc_k->java_mirror()); |
| 0 | 4448 int encl_method_method_idx = ik_h->enclosing_method_method_index(); |
| 4449 if (encl_method_method_idx != 0) { | |
|
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|
4450 Symbol* sym = ik_h->constants()->symbol_at( |
| 0 | 4451 extract_low_short_from_int( |
| 4452 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4453 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4454 dest->obj_at_put(1, str()); | |
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|
4455 sym = ik_h->constants()->symbol_at( |
| 0 | 4456 extract_high_short_from_int( |
| 4457 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4458 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4459 dest->obj_at_put(2, str()); | |
| 4460 } | |
| 4461 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 4462 } | |
| 4463 JVM_END | |
| 4464 | |
| 4465 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
| 4466 jint javaThreadState)) | |
| 4467 { | |
| 4468 // If new thread states are added in future JDK and VM versions, | |
| 4469 // this should check if the JDK version is compatible with thread | |
| 4470 // states supported by the VM. Return NULL if not compatible. | |
| 4471 // | |
| 4472 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4473 // to the Java thread state that the JDK supports. | |
| 4474 // | |
| 4475 | |
| 4476 typeArrayHandle values_h; | |
| 4477 switch (javaThreadState) { | |
| 4478 case JAVA_THREAD_STATE_NEW : { | |
| 4479 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4480 values_h = typeArrayHandle(THREAD, r); | |
| 4481 values_h->int_at_put(0, java_lang_Thread::NEW); | |
| 4482 break; | |
| 4483 } | |
| 4484 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4485 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4486 values_h = typeArrayHandle(THREAD, r); | |
| 4487 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
| 4488 break; | |
| 4489 } | |
| 4490 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4491 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4492 values_h = typeArrayHandle(THREAD, r); | |
| 4493 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
| 4494 break; | |
| 4495 } | |
| 4496 case JAVA_THREAD_STATE_WAITING : { | |
| 4497 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
| 4498 values_h = typeArrayHandle(THREAD, r); | |
| 4499 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
| 4500 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
| 4501 break; | |
| 4502 } | |
| 4503 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4504 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
| 4505 values_h = typeArrayHandle(THREAD, r); | |
| 4506 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
| 4507 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
| 4508 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
| 4509 break; | |
| 4510 } | |
| 4511 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4512 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4513 values_h = typeArrayHandle(THREAD, r); | |
| 4514 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
| 4515 break; | |
| 4516 } | |
| 4517 default: | |
| 4518 // Unknown state - probably incompatible JDK version | |
| 4519 return NULL; | |
| 4520 } | |
| 4521 | |
| 4522 return (jintArray) JNIHandles::make_local(env, values_h()); | |
| 4523 } | |
| 4524 JVM_END | |
| 4525 | |
| 4526 | |
| 4527 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
| 4528 jint javaThreadState, | |
| 4529 jintArray values)) | |
| 4530 { | |
| 4531 // If new thread states are added in future JDK and VM versions, | |
| 4532 // this should check if the JDK version is compatible with thread | |
| 4533 // states supported by the VM. Return NULL if not compatible. | |
| 4534 // | |
| 4535 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4536 // to the Java thread state that the JDK supports. | |
| 4537 // | |
| 4538 | |
| 4539 ResourceMark rm; | |
| 4540 | |
| 4541 // Check if threads is null | |
| 4542 if (values == NULL) { | |
| 4543 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4544 } | |
| 4545 | |
| 4546 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
| 4547 typeArrayHandle values_h(THREAD, v); | |
| 4548 | |
| 4549 objArrayHandle names_h; | |
| 4550 switch (javaThreadState) { | |
| 4551 case JAVA_THREAD_STATE_NEW : { | |
| 4552 assert(values_h->length() == 1 && | |
| 4553 values_h->int_at(0) == java_lang_Thread::NEW, | |
| 4554 "Invalid threadStatus value"); | |
| 4555 | |
| 1142 | 4556 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4557 1, /* only 1 substate */ |
| 4558 CHECK_NULL); | |
| 4559 names_h = objArrayHandle(THREAD, r); | |
| 4560 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
| 4561 names_h->obj_at_put(0, name()); | |
| 4562 break; | |
| 4563 } | |
| 4564 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4565 assert(values_h->length() == 1 && | |
| 4566 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
| 4567 "Invalid threadStatus value"); | |
| 4568 | |
| 1142 | 4569 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4570 1, /* only 1 substate */ |
| 4571 CHECK_NULL); | |
| 4572 names_h = objArrayHandle(THREAD, r); | |
| 4573 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
| 4574 names_h->obj_at_put(0, name()); | |
| 4575 break; | |
| 4576 } | |
| 4577 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4578 assert(values_h->length() == 1 && | |
| 4579 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
| 4580 "Invalid threadStatus value"); | |
| 4581 | |
| 1142 | 4582 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4583 1, /* only 1 substate */ |
| 4584 CHECK_NULL); | |
| 4585 names_h = objArrayHandle(THREAD, r); | |
| 4586 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
| 4587 names_h->obj_at_put(0, name()); | |
| 4588 break; | |
| 4589 } | |
| 4590 case JAVA_THREAD_STATE_WAITING : { | |
| 4591 assert(values_h->length() == 2 && | |
| 4592 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
| 4593 values_h->int_at(1) == java_lang_Thread::PARKED, | |
| 4594 "Invalid threadStatus value"); | |
| 1142 | 4595 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4596 2, /* number of substates */ |
| 4597 CHECK_NULL); | |
| 4598 names_h = objArrayHandle(THREAD, r); | |
| 4599 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
| 4600 CHECK_NULL); | |
| 4601 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
| 4602 CHECK_NULL); | |
| 4603 names_h->obj_at_put(0, name0()); | |
| 4604 names_h->obj_at_put(1, name1()); | |
| 4605 break; | |
| 4606 } | |
| 4607 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4608 assert(values_h->length() == 3 && | |
| 4609 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
| 4610 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
| 4611 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
| 4612 "Invalid threadStatus value"); | |
| 1142 | 4613 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4614 3, /* number of substates */ |
| 4615 CHECK_NULL); | |
| 4616 names_h = objArrayHandle(THREAD, r); | |
| 4617 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
| 4618 CHECK_NULL); | |
| 4619 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
| 4620 CHECK_NULL); | |
| 4621 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
| 4622 CHECK_NULL); | |
| 4623 names_h->obj_at_put(0, name0()); | |
| 4624 names_h->obj_at_put(1, name1()); | |
| 4625 names_h->obj_at_put(2, name2()); | |
| 4626 break; | |
| 4627 } | |
| 4628 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4629 assert(values_h->length() == 1 && | |
| 4630 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
| 4631 "Invalid threadStatus value"); | |
| 1142 | 4632 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4633 1, /* only 1 substate */ |
| 4634 CHECK_NULL); | |
| 4635 names_h = objArrayHandle(THREAD, r); | |
| 4636 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
| 4637 names_h->obj_at_put(0, name()); | |
| 4638 break; | |
| 4639 } | |
| 4640 default: | |
| 4641 // Unknown state - probably incompatible JDK version | |
| 4642 return NULL; | |
| 4643 } | |
| 4644 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
| 4645 } | |
| 4646 JVM_END | |
| 4647 | |
| 4648 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
| 4649 { | |
| 4650 memset(info, 0, sizeof(info_size)); | |
| 4651 | |
| 4652 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
| 4653 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4654 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4655 | |
| 4656 // when we add a new capability in the jvm_version_info struct, we should also | |
| 4657 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
| 4658 // counter defined in runtimeService.cpp. | |
| 4659 info->is_attachable = AttachListener::is_attach_supported(); | |
| 4660 } | |
| 4661 JVM_END |