Mercurial > hg > truffle
annotate src/share/vm/prims/jvm.cpp @ 8870:cd9ad42dfde0
Merge
| author | bharadwaj |
|---|---|
| date | Fri, 29 Mar 2013 20:52:01 -0700 |
| parents | 1916ca1dec2f 16885e702c88 |
| children | b9a918201d47 92ef81e2f571 b295e132102d |
| 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" | |
| 62 #include "utilities/copy.hpp" | |
| 63 #include "utilities/defaultStream.hpp" | |
| 64 #include "utilities/dtrace.hpp" | |
| 65 #include "utilities/events.hpp" | |
| 66 #include "utilities/histogram.hpp" | |
| 67 #include "utilities/top.hpp" | |
| 68 #include "utilities/utf8.hpp" | |
| 69 #ifdef TARGET_OS_FAMILY_linux | |
| 70 # include "jvm_linux.h" | |
| 71 #endif | |
| 72 #ifdef TARGET_OS_FAMILY_solaris | |
| 73 # include "jvm_solaris.h" | |
| 74 #endif | |
| 75 #ifdef TARGET_OS_FAMILY_windows | |
| 76 # include "jvm_windows.h" | |
| 77 #endif | |
| 3960 | 78 #ifdef TARGET_OS_FAMILY_bsd |
| 79 # include "jvm_bsd.h" | |
| 80 #endif | |
| 1972 | 81 |
| 0 | 82 #include <errno.h> |
| 83 | |
| 4006 | 84 #ifndef USDT2 |
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85 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__begin, long long); |
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86 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__end, int); |
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87 HS_DTRACE_PROBE_DECL0(hotspot, thread__yield); |
| 4006 | 88 #endif /* !USDT2 */ |
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89 |
| 0 | 90 /* |
| 91 NOTE about use of any ctor or function call that can trigger a safepoint/GC: | |
| 92 such ctors and calls MUST NOT come between an oop declaration/init and its | |
| 93 usage because if objects are move this may cause various memory stomps, bus | |
| 94 errors and segfaults. Here is a cookbook for causing so called "naked oop | |
| 95 failures": | |
| 96 | |
| 97 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> { | |
| 98 JVMWrapper("JVM_GetClassDeclaredFields"); | |
| 99 | |
| 100 // Object address to be held directly in mirror & not visible to GC | |
| 101 oop mirror = JNIHandles::resolve_non_null(ofClass); | |
| 102 | |
| 103 // If this ctor can hit a safepoint, moving objects around, then | |
| 104 ComplexConstructor foo; | |
| 105 | |
| 106 // Boom! mirror may point to JUNK instead of the intended object | |
| 107 (some dereference of mirror) | |
| 108 | |
| 109 // Here's another call that may block for GC, making mirror stale | |
| 110 MutexLocker ml(some_lock); | |
| 111 | |
| 112 // And here's an initializer that can result in a stale oop | |
| 113 // all in one step. | |
| 114 oop o = call_that_can_throw_exception(TRAPS); | |
| 115 | |
| 116 | |
| 117 The solution is to keep the oop declaration BELOW the ctor or function | |
| 118 call that might cause a GC, do another resolve to reassign the oop, or | |
| 119 consider use of a Handle instead of an oop so there is immunity from object | |
| 120 motion. But note that the "QUICK" entries below do not have a handlemark | |
| 121 and thus can only support use of handles passed in. | |
| 122 */ | |
| 123 | |
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124 static void trace_class_resolution_impl(Klass* to_class, TRAPS) { |
| 0 | 125 ResourceMark rm; |
| 126 int line_number = -1; | |
| 127 const char * source_file = NULL; | |
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128 const char * trace = "explicit"; |
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129 InstanceKlass* caller = NULL; |
| 0 | 130 JavaThread* jthread = JavaThread::current(); |
| 131 if (jthread->has_last_Java_frame()) { | |
| 132 vframeStream vfst(jthread); | |
| 133 | |
| 134 // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames | |
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135 TempNewSymbol access_controller = SymbolTable::new_symbol("java/security/AccessController", CHECK); |
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136 Klass* access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); |
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137 TempNewSymbol privileged_action = SymbolTable::new_symbol("java/security/PrivilegedAction", CHECK); |
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138 Klass* privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); |
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139 |
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140 Method* last_caller = NULL; |
| 0 | 141 |
| 142 while (!vfst.at_end()) { | |
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143 Method* m = vfst.method(); |
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144 if (!vfst.method()->method_holder()->is_subclass_of(SystemDictionary::ClassLoader_klass())&& |
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145 !vfst.method()->method_holder()->is_subclass_of(access_controller_klass) && |
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146 !vfst.method()->method_holder()->is_subclass_of(privileged_action_klass)) { |
| 0 | 147 break; |
| 148 } | |
| 149 last_caller = m; | |
| 150 vfst.next(); | |
| 151 } | |
| 152 // if this is called from Class.forName0 and that is called from Class.forName, | |
| 153 // then print the caller of Class.forName. If this is Class.loadClass, then print | |
| 154 // that caller, otherwise keep quiet since this should be picked up elsewhere. | |
| 155 bool found_it = false; | |
| 156 if (!vfst.at_end() && | |
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157 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
| 0 | 158 vfst.method()->name() == vmSymbols::forName0_name()) { |
| 159 vfst.next(); | |
| 160 if (!vfst.at_end() && | |
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161 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
| 0 | 162 vfst.method()->name() == vmSymbols::forName_name()) { |
| 163 vfst.next(); | |
| 164 found_it = true; | |
| 165 } | |
| 166 } else if (last_caller != NULL && | |
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167 last_caller->method_holder()->name() == |
| 0 | 168 vmSymbols::java_lang_ClassLoader() && |
| 169 (last_caller->name() == vmSymbols::loadClassInternal_name() || | |
| 170 last_caller->name() == vmSymbols::loadClass_name())) { | |
| 171 found_it = true; | |
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172 } else if (!vfst.at_end()) { |
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173 if (vfst.method()->is_native()) { |
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174 // JNI call |
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175 found_it = true; |
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176 } |
| 0 | 177 } |
| 178 if (found_it && !vfst.at_end()) { | |
| 179 // found the caller | |
| 180 caller = vfst.method()->method_holder(); | |
| 181 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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182 if (line_number == -1) { |
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183 // show method name if it's a native method |
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184 trace = vfst.method()->name_and_sig_as_C_string(); |
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185 } |
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186 Symbol* s = caller->source_file_name(); |
| 0 | 187 if (s != NULL) { |
| 188 source_file = s->as_C_string(); | |
| 189 } | |
| 190 } | |
| 191 } | |
| 192 if (caller != NULL) { | |
| 193 if (to_class != caller) { | |
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194 const char * from = caller->external_name(); |
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195 const char * to = to_class->external_name(); |
| 0 | 196 // print in a single call to reduce interleaving between threads |
| 197 if (source_file != NULL) { | |
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198 tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace); |
| 0 | 199 } else { |
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200 tty->print("RESOLVE %s %s (%s)\n", from, to, trace); |
| 0 | 201 } |
| 202 } | |
| 203 } | |
| 204 } | |
| 205 | |
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206 void trace_class_resolution(Klass* to_class) { |
| 0 | 207 EXCEPTION_MARK; |
| 208 trace_class_resolution_impl(to_class, THREAD); | |
| 209 if (HAS_PENDING_EXCEPTION) { | |
| 210 CLEAR_PENDING_EXCEPTION; | |
| 211 } | |
| 212 } | |
| 213 | |
| 214 // Wrapper to trace JVM functions | |
| 215 | |
| 216 #ifdef ASSERT | |
| 217 class JVMTraceWrapper : public StackObj { | |
| 218 public: | |
| 219 JVMTraceWrapper(const char* format, ...) { | |
| 220 if (TraceJVMCalls) { | |
| 221 va_list ap; | |
| 222 va_start(ap, format); | |
| 223 tty->print("JVM "); | |
| 224 tty->vprint_cr(format, ap); | |
| 225 va_end(ap); | |
| 226 } | |
| 227 } | |
| 228 }; | |
| 229 | |
| 230 Histogram* JVMHistogram; | |
| 231 volatile jint JVMHistogram_lock = 0; | |
| 232 | |
| 233 class JVMHistogramElement : public HistogramElement { | |
| 234 public: | |
| 235 JVMHistogramElement(const char* name); | |
| 236 }; | |
| 237 | |
| 238 JVMHistogramElement::JVMHistogramElement(const char* elementName) { | |
| 239 _name = elementName; | |
| 240 uintx count = 0; | |
| 241 | |
| 242 while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) { | |
| 243 while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) { | |
| 244 count +=1; | |
| 245 if ( (WarnOnStalledSpinLock > 0) | |
| 246 && (count % WarnOnStalledSpinLock == 0)) { | |
| 247 warning("JVMHistogram_lock seems to be stalled"); | |
| 248 } | |
| 249 } | |
| 250 } | |
| 251 | |
| 252 if(JVMHistogram == NULL) | |
| 253 JVMHistogram = new Histogram("JVM Call Counts",100); | |
| 254 | |
| 255 JVMHistogram->add_element(this); | |
| 256 Atomic::dec(&JVMHistogram_lock); | |
| 257 } | |
| 258 | |
| 259 #define JVMCountWrapper(arg) \ | |
| 260 static JVMHistogramElement* e = new JVMHistogramElement(arg); \ | |
| 261 if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen! | |
| 262 | |
| 263 #define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) | |
| 264 #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) | |
| 265 #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) | |
| 266 #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) | |
| 267 #else | |
| 268 #define JVMWrapper(arg1) | |
| 269 #define JVMWrapper2(arg1, arg2) | |
| 270 #define JVMWrapper3(arg1, arg2, arg3) | |
| 271 #define JVMWrapper4(arg1, arg2, arg3, arg4) | |
| 272 #endif | |
| 273 | |
| 274 | |
| 275 // Interface version ///////////////////////////////////////////////////////////////////// | |
| 276 | |
| 277 | |
| 278 JVM_LEAF(jint, JVM_GetInterfaceVersion()) | |
| 279 return JVM_INTERFACE_VERSION; | |
| 280 JVM_END | |
| 281 | |
| 282 | |
| 283 // java.lang.System ////////////////////////////////////////////////////////////////////// | |
| 284 | |
| 285 | |
| 286 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored)) | |
| 287 JVMWrapper("JVM_CurrentTimeMillis"); | |
| 288 return os::javaTimeMillis(); | |
| 289 JVM_END | |
| 290 | |
| 291 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored)) | |
| 292 JVMWrapper("JVM_NanoTime"); | |
| 293 return os::javaTimeNanos(); | |
| 294 JVM_END | |
| 295 | |
| 296 | |
| 297 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, | |
| 298 jobject dst, jint dst_pos, jint length)) | |
| 299 JVMWrapper("JVM_ArrayCopy"); | |
| 300 // Check if we have null pointers | |
| 301 if (src == NULL || dst == NULL) { | |
| 302 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 303 } | |
| 304 arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); | |
| 305 arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); | |
| 306 assert(s->is_oop(), "JVM_ArrayCopy: src not an oop"); | |
| 307 assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); | |
| 308 // Do copy | |
| 6983 | 309 s->klass()->copy_array(s, src_pos, d, dst_pos, length, thread); |
| 0 | 310 JVM_END |
| 311 | |
| 312 | |
| 313 static void set_property(Handle props, const char* key, const char* value, TRAPS) { | |
| 314 JavaValue r(T_OBJECT); | |
| 315 // public synchronized Object put(Object key, Object value); | |
| 316 HandleMark hm(THREAD); | |
| 317 Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK); | |
| 318 Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK); | |
| 319 JavaCalls::call_virtual(&r, | |
| 320 props, | |
| 1142 | 321 KlassHandle(THREAD, SystemDictionary::Properties_klass()), |
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322 vmSymbols::put_name(), |
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323 vmSymbols::object_object_object_signature(), |
| 0 | 324 key_str, |
| 325 value_str, | |
| 326 THREAD); | |
| 327 } | |
| 328 | |
| 329 | |
| 330 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties)); | |
| 331 | |
| 332 | |
| 333 JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties)) | |
| 334 JVMWrapper("JVM_InitProperties"); | |
| 335 ResourceMark rm; | |
| 336 | |
| 337 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
| 338 | |
| 339 // System property list includes both user set via -D option and | |
| 340 // jvm system specific properties. | |
| 341 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
| 342 PUTPROP(props, p->key(), p->value()); | |
| 343 } | |
| 344 | |
| 345 // Convert the -XX:MaxDirectMemorySize= command line flag | |
| 346 // to the sun.nio.MaxDirectMemorySize property. | |
| 347 // Do this after setting user properties to prevent people | |
| 348 // from setting the value with a -D option, as requested. | |
| 349 { | |
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350 if (FLAG_IS_DEFAULT(MaxDirectMemorySize)) { |
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351 PUTPROP(props, "sun.nio.MaxDirectMemorySize", "-1"); |
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352 } else { |
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353 char as_chars[256]; |
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354 jio_snprintf(as_chars, sizeof(as_chars), UINTX_FORMAT, MaxDirectMemorySize); |
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355 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); |
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356 } |
| 0 | 357 } |
| 358 | |
| 359 // JVM monitoring and management support | |
| 360 // Add the sun.management.compiler property for the compiler's name | |
| 361 { | |
| 362 #undef CSIZE | |
| 363 #if defined(_LP64) || defined(_WIN64) | |
| 364 #define CSIZE "64-Bit " | |
| 365 #else | |
| 366 #define CSIZE | |
| 367 #endif // 64bit | |
| 368 | |
| 369 #ifdef TIERED | |
| 370 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; | |
| 371 #else | |
| 372 #if defined(COMPILER1) | |
| 373 const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; | |
| 374 #elif defined(COMPILER2) | |
| 375 const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; | |
| 376 #else | |
| 377 const char* compiler_name = ""; | |
| 378 #endif // compilers | |
| 379 #endif // TIERED | |
| 380 | |
| 381 if (*compiler_name != '\0' && | |
| 382 (Arguments::mode() != Arguments::_int)) { | |
| 383 PUTPROP(props, "sun.management.compiler", compiler_name); | |
| 384 } | |
| 385 } | |
| 386 | |
| 387 return properties; | |
| 388 JVM_END | |
| 389 | |
| 390 | |
| 391 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// | |
| 392 | |
| 393 extern volatile jint vm_created; | |
| 394 | |
| 395 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
| 396 if (vm_created != 0 && (code == 0)) { | |
| 397 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
| 398 Universe::run_finalizers_on_exit(); | |
| 399 } | |
| 400 before_exit(thread); | |
| 401 vm_exit(code); | |
| 402 JVM_END | |
| 403 | |
| 404 | |
| 405 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
| 406 before_exit(thread); | |
| 407 vm_exit(code); | |
| 408 JVM_END | |
| 409 | |
| 410 | |
| 411 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
| 412 register_on_exit_function(func); | |
| 413 JVM_END | |
| 414 | |
| 415 | |
| 416 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
| 417 JVMWrapper("JVM_GC"); | |
| 418 if (!DisableExplicitGC) { | |
| 419 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
| 420 } | |
| 421 JVM_END | |
| 422 | |
| 423 | |
| 424 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
| 425 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
| 426 return Universe::heap()->millis_since_last_gc(); | |
| 427 JVM_END | |
| 428 | |
| 429 | |
| 430 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
| 431 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
| 432 JVM_END | |
| 433 | |
| 434 | |
| 435 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
| 436 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
| 437 JVM_END | |
| 438 | |
| 439 static inline jlong convert_size_t_to_jlong(size_t val) { | |
| 440 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
| 441 NOT_LP64 (return (jlong)val;) | |
| 442 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
| 443 } | |
| 444 | |
| 445 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
| 446 JVMWrapper("JVM_TotalMemory"); | |
| 447 size_t n = Universe::heap()->capacity(); | |
| 448 return convert_size_t_to_jlong(n); | |
| 449 JVM_END | |
| 450 | |
| 451 | |
| 452 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
| 453 JVMWrapper("JVM_FreeMemory"); | |
| 454 CollectedHeap* ch = Universe::heap(); | |
|
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455 size_t n; |
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456 { |
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457 MutexLocker x(Heap_lock); |
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458 n = ch->capacity() - ch->used(); |
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459 } |
| 0 | 460 return convert_size_t_to_jlong(n); |
| 461 JVM_END | |
| 462 | |
| 463 | |
| 464 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
| 465 JVMWrapper("JVM_MaxMemory"); | |
| 466 size_t n = Universe::heap()->max_capacity(); | |
| 467 return convert_size_t_to_jlong(n); | |
| 468 JVM_END | |
| 469 | |
| 470 | |
| 471 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
| 472 JVMWrapper("JVM_ActiveProcessorCount"); | |
| 473 return os::active_processor_count(); | |
| 474 JVM_END | |
| 475 | |
| 476 | |
| 477 | |
| 478 // java.lang.Throwable ////////////////////////////////////////////////////// | |
| 479 | |
| 480 | |
| 481 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
| 482 JVMWrapper("JVM_FillInStackTrace"); | |
| 483 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
| 484 java_lang_Throwable::fill_in_stack_trace(exception); | |
| 485 JVM_END | |
| 486 | |
| 487 | |
| 488 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
| 489 JVMWrapper("JVM_GetStackTraceDepth"); | |
| 490 oop exception = JNIHandles::resolve(throwable); | |
| 491 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
| 492 JVM_END | |
| 493 | |
| 494 | |
| 495 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
| 496 JVMWrapper("JVM_GetStackTraceElement"); | |
| 497 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
| 498 oop exception = JNIHandles::resolve(throwable); | |
| 499 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
| 500 return JNIHandles::make_local(env, element); | |
| 501 JVM_END | |
| 502 | |
| 503 | |
| 504 // java.lang.Object /////////////////////////////////////////////// | |
| 505 | |
| 506 | |
| 507 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
| 508 JVMWrapper("JVM_IHashCode"); | |
| 509 // as implemented in the classic virtual machine; return 0 if object is NULL | |
| 510 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
| 511 JVM_END | |
| 512 | |
| 513 | |
| 514 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
| 515 JVMWrapper("JVM_MonitorWait"); | |
| 516 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 517 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
| 518 if (JvmtiExport::should_post_monitor_wait()) { | |
| 519 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
| 520 } | |
| 521 ObjectSynchronizer::wait(obj, ms, CHECK); | |
| 522 JVM_END | |
| 523 | |
| 524 | |
| 525 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
| 526 JVMWrapper("JVM_MonitorNotify"); | |
| 527 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 528 ObjectSynchronizer::notify(obj, CHECK); | |
| 529 JVM_END | |
| 530 | |
| 531 | |
| 532 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
| 533 JVMWrapper("JVM_MonitorNotifyAll"); | |
| 534 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 535 ObjectSynchronizer::notifyall(obj, CHECK); | |
| 536 JVM_END | |
| 537 | |
| 538 | |
| 539 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
| 540 JVMWrapper("JVM_Clone"); | |
| 541 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 542 const KlassHandle klass (THREAD, obj->klass()); | |
| 543 JvmtiVMObjectAllocEventCollector oam; | |
| 544 | |
| 545 #ifdef ASSERT | |
| 546 // Just checking that the cloneable flag is set correct | |
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547 if (obj->is_array()) { |
| 0 | 548 guarantee(klass->is_cloneable(), "all arrays are cloneable"); |
| 549 } else { | |
| 550 guarantee(obj->is_instance(), "should be instanceOop"); | |
| 1142 | 551 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
| 0 | 552 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
| 553 } | |
| 554 #endif | |
| 555 | |
| 556 // Check if class of obj supports the Cloneable interface. | |
| 557 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
| 558 if (!klass->is_cloneable()) { | |
| 559 ResourceMark rm(THREAD); | |
| 560 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
| 561 } | |
| 562 | |
| 563 // Make shallow object copy | |
| 564 const int size = obj->size(); | |
| 565 oop new_obj = NULL; | |
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566 if (obj->is_array()) { |
| 0 | 567 const int length = ((arrayOop)obj())->length(); |
| 568 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
| 569 } else { | |
| 570 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
| 571 } | |
| 572 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
| 573 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
| 574 // be suspended in the middle of copying the pointer and end up with parts | |
| 575 // of two different pointers in the field. Subsequent dereferences will crash. | |
| 576 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
| 577 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
| 578 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
| 579 // The same is true of StubRoutines::object_copy and the various oop_copy | |
| 580 // variants, and of the code generated by the inline_native_clone intrinsic. | |
| 581 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
| 582 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
| 583 (size_t)align_object_size(size) / HeapWordsPerLong); | |
| 584 // Clear the header | |
| 585 new_obj->init_mark(); | |
| 586 | |
| 587 // Store check (mark entire object and let gc sort it out) | |
| 588 BarrierSet* bs = Universe::heap()->barrier_set(); | |
| 589 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
| 590 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
| 591 | |
| 592 // Caution: this involves a java upcall, so the clone should be | |
| 593 // "gc-robust" by this stage. | |
| 594 if (klass->has_finalizer()) { | |
| 595 assert(obj->is_instance(), "should be instanceOop"); | |
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596 new_obj = InstanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); |
| 0 | 597 } |
| 598 | |
| 599 return JNIHandles::make_local(env, oop(new_obj)); | |
| 600 JVM_END | |
| 601 | |
| 602 // java.lang.Compiler //////////////////////////////////////////////////// | |
| 603 | |
| 604 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
| 605 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
| 606 // functions are all silently ignored unless JVM warnings are printed. | |
| 607 | |
| 608 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
| 609 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
| 610 JVM_END | |
| 611 | |
| 612 | |
| 613 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
| 614 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
| 615 return JNI_FALSE; | |
| 616 JVM_END | |
| 617 | |
| 618 | |
| 619 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
| 620 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
| 621 return JNI_FALSE; | |
| 622 JVM_END | |
| 623 | |
| 624 | |
| 625 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
| 626 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
| 627 return JNI_FALSE; | |
| 628 JVM_END | |
| 629 | |
| 630 | |
| 631 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
| 632 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
| 633 return NULL; | |
| 634 JVM_END | |
| 635 | |
| 636 | |
| 637 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
| 638 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
| 639 JVM_END | |
| 640 | |
| 641 | |
| 642 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
| 643 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
| 644 JVM_END | |
| 645 | |
| 646 | |
| 647 | |
| 648 // Error message support ////////////////////////////////////////////////////// | |
| 649 | |
| 650 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
| 651 JVMWrapper("JVM_GetLastErrorString"); | |
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652 return (jint)os::lasterror(buf, len); |
| 0 | 653 JVM_END |
| 654 | |
| 655 | |
| 656 // java.io.File /////////////////////////////////////////////////////////////// | |
| 657 | |
| 658 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
| 659 JVMWrapper2("JVM_NativePath (%s)", path); | |
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660 return os::native_path(path); |
| 0 | 661 JVM_END |
| 662 | |
| 663 | |
| 664 // Misc. class handling /////////////////////////////////////////////////////////// | |
| 665 | |
| 666 | |
| 667 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
| 668 JVMWrapper("JVM_GetCallerClass"); | |
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669 |
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670 // Pre-JDK 8 and early builds of JDK 8 don't have a CallerSensitive annotation. |
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671 if (SystemDictionary::reflect_CallerSensitive_klass() == NULL) { |
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672 Klass* k = thread->security_get_caller_class(depth); |
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673 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, k->java_mirror()); |
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674 } else { |
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675 // Basic handshaking with Java_sun_reflect_Reflection_getCallerClass |
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676 assert(depth == -1, "wrong handshake depth"); |
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677 } |
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678 |
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679 // Getting the class of the caller frame. |
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680 // |
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681 // The call stack at this point looks something like this: |
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682 // |
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683 // [0] [ @CallerSensitive public sun.reflect.Reflection.getCallerClass ] |
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684 // [1] [ @CallerSensitive API.method ] |
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685 // [.] [ (skipped intermediate frames) ] |
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686 // [n] [ caller ] |
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687 vframeStream vfst(thread); |
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688 // Cf. LibraryCallKit::inline_native_Reflection_getCallerClass |
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689 for (int n = 0; !vfst.at_end(); vfst.security_next(), n++) { |
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690 Method* m = vfst.method(); |
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691 assert(m != NULL, "sanity"); |
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692 switch (n) { |
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693 case 0: |
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694 // This must only be called from Reflection.getCallerClass |
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695 if (m->intrinsic_id() != vmIntrinsics::_getCallerClass) { |
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696 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetCallerClass must only be called from Reflection.getCallerClass"); |
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697 } |
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698 // fall-through |
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699 case 1: |
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700 // Frame 0 and 1 must be caller sensitive. |
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701 if (!m->caller_sensitive()) { |
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702 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), err_msg("CallerSensitive annotation expected at frame %d", n)); |
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703 } |
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diff
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|
704 break; |
|
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diff
changeset
|
705 default: |
|
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changeset
|
706 if (!m->is_ignored_by_security_stack_walk()) { |
|
16885e702c88
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changeset
|
707 // We have reached the desired frame; return the holder class. |
|
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|
708 return (jclass) JNIHandles::make_local(env, m->method_holder()->java_mirror()); |
|
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changeset
|
709 } |
|
16885e702c88
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diff
changeset
|
710 break; |
|
16885e702c88
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diff
changeset
|
711 } |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
712 } |
|
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|
713 return NULL; |
| 0 | 714 JVM_END |
| 715 | |
| 716 | |
| 717 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
| 718 JVMWrapper("JVM_FindPrimitiveClass"); | |
| 719 oop mirror = NULL; | |
| 720 BasicType t = name2type(utf); | |
| 721 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
| 722 mirror = Universe::java_mirror(t); | |
| 723 } | |
| 724 if (mirror == NULL) { | |
| 725 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
| 726 } else { | |
| 727 return (jclass) JNIHandles::make_local(env, mirror); | |
| 728 } | |
| 729 JVM_END | |
| 730 | |
| 731 | |
| 732 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
| 733 JVMWrapper("JVM_ResolveClass"); | |
| 734 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
| 735 JVM_END | |
| 736 | |
|
878
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|
737 |
|
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|
738 // Returns a class loaded by the bootstrap class loader; or null |
|
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739 // if not found. ClassNotFoundException is not thrown. |
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|
740 // |
|
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|
741 // Rationale behind JVM_FindClassFromBootLoader |
|
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|
742 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
|
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743 // b> because of (a) java.dll has a direct dependecy on the unexported |
|
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|
744 // private symbol "_JVM_FindClassFromClassLoader@20". |
|
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|
745 // c> the launcher cannot use the private symbol as it dynamically opens |
|
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|
746 // the entry point, so if something changes, the launcher will fail |
|
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|
747 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
|
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|
748 // stable exported interface. |
|
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|
749 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
|
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|
750 // signature to change from _JVM_FindClassFromClassLoader@20 to |
|
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|
751 // JVM_FindClassFromClassLoader and will not be backward compatible |
|
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|
752 // with older JDKs. |
|
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|
753 // Thus a public/stable exported entry point is the right solution, |
|
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|
754 // public here means public in linker semantics, and is exported only |
|
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|
755 // to the JDK, and is not intended to be a public API. |
|
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diff
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|
756 |
|
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changeset
|
757 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
|
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|
758 const char* name)) |
|
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|
759 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
|
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diff
changeset
|
760 |
|
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|
761 // Java libraries should ensure that name is never null... |
|
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|
762 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
|
878
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diff
changeset
|
763 // It's impossible to create this class; the name cannot fit |
|
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diff
changeset
|
764 // into the constant pool. |
|
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diff
changeset
|
765 return NULL; |
|
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6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
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diff
changeset
|
766 } |
|
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diff
changeset
|
767 |
|
2177
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changeset
|
768 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
|
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|
769 Klass* k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
|
878
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mchung
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diff
changeset
|
770 if (k == NULL) { |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
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diff
changeset
|
771 return NULL; |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
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diff
changeset
|
772 } |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
773 |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
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diff
changeset
|
774 if (TraceClassResolution) { |
|
abe076e3636f
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diff
changeset
|
775 trace_class_resolution(k); |
|
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6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
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diff
changeset
|
776 } |
| 6983 | 777 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
|
778 JVM_END |
|
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6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
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diff
changeset
|
779 |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
780 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
|
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mchung
parents:
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diff
changeset
|
781 jboolean init, jobject loader, |
|
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mchung
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diff
changeset
|
782 jboolean throwError)) |
|
abe076e3636f
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mchung
parents:
875
diff
changeset
|
783 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
|
784 throwError ? "error" : "exception"); |
| 388 | 785 // Java libraries should ensure that name is never null... |
|
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2162
diff
changeset
|
786 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
| 388 | 787 // It's impossible to create this class; the name cannot fit |
| 788 // into the constant pool. | |
| 789 if (throwError) { | |
| 790 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 791 } else { | |
| 792 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
| 793 } | |
| 794 } | |
|
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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diff
changeset
|
795 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
| 388 | 796 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
| 797 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 798 Handle(), throwError, THREAD); | |
| 799 | |
| 800 if (TraceClassResolution && result != NULL) { | |
|
6725
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changeset
|
801 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
| 388 | 802 } |
| 803 return result; | |
| 0 | 804 JVM_END |
| 805 | |
| 806 | |
| 807 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
| 808 jboolean init, jclass from)) | |
| 809 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
|
2177
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coleenp
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|
810 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
| 0 | 811 // It's impossible to create this class; the name cannot fit |
| 812 // into the constant pool. | |
| 813 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 814 } | |
|
2177
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diff
changeset
|
815 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
| 0 | 816 oop from_class_oop = JNIHandles::resolve(from); |
|
6725
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diff
changeset
|
817 Klass* from_class = (from_class_oop == NULL) |
|
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coleenp
parents:
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diff
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|
818 ? (Klass*)NULL |
|
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|
819 : java_lang_Class::as_Klass(from_class_oop); |
| 0 | 820 oop class_loader = NULL; |
| 821 oop protection_domain = NULL; | |
| 822 if (from_class != NULL) { | |
| 6983 | 823 class_loader = from_class->class_loader(); |
| 824 protection_domain = from_class->protection_domain(); | |
| 0 | 825 } |
| 826 Handle h_loader(THREAD, class_loader); | |
| 827 Handle h_prot (THREAD, protection_domain); | |
| 828 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 829 h_prot, true, thread); | |
| 830 | |
| 831 if (TraceClassResolution && result != NULL) { | |
| 832 // this function is generally only used for class loading during verification. | |
| 833 ResourceMark rm; | |
| 834 oop from_mirror = JNIHandles::resolve_non_null(from); | |
|
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|
835 Klass* from_class = java_lang_Class::as_Klass(from_mirror); |
| 6983 | 836 const char * from_name = from_class->external_name(); |
| 0 | 837 |
| 838 oop mirror = JNIHandles::resolve_non_null(result); | |
|
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|
839 Klass* to_class = java_lang_Class::as_Klass(mirror); |
| 6983 | 840 const char * to = to_class->external_name(); |
| 0 | 841 tty->print("RESOLVE %s %s (verification)\n", from_name, to); |
| 842 } | |
| 843 | |
| 844 return result; | |
| 845 JVM_END | |
| 846 | |
| 847 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
| 848 if (loader.is_null()) { | |
| 849 return; | |
| 850 } | |
| 851 | |
| 852 // check whether the current caller thread holds the lock or not. | |
| 853 // If not, increment the corresponding counter | |
| 854 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
| 855 ObjectSynchronizer::owner_self) { | |
| 856 counter->inc(); | |
| 857 } | |
| 858 } | |
| 859 | |
| 860 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
|
973
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
878
diff
changeset
|
861 // and JVM_DefineClassWithSourceCond() |
|
ad6585fd4087
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diff
changeset
|
862 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
|
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
878
diff
changeset
|
863 jobject loader, const jbyte *buf, |
|
ad6585fd4087
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acorn
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878
diff
changeset
|
864 jsize len, jobject pd, const char *source, |
|
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
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878
diff
changeset
|
865 jboolean verify, TRAPS) { |
|
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
388
diff
changeset
|
866 if (source == NULL) source = "__JVM_DefineClass__"; |
| 0 | 867 |
|
875
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6857194: Add hotspot perf counters to aid class loading performance measurement
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diff
changeset
|
868 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
|
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mchung
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726
diff
changeset
|
869 JavaThread* jt = (JavaThread*) THREAD; |
|
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mchung
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726
diff
changeset
|
870 |
|
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mchung
parents:
726
diff
changeset
|
871 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
|
6a93908f268f
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mchung
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726
diff
changeset
|
872 ClassLoader::perf_define_appclass_selftime(), |
|
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
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diff
changeset
|
873 ClassLoader::perf_define_appclasses(), |
|
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726
diff
changeset
|
874 jt->get_thread_stat()->perf_recursion_counts_addr(), |
|
6a93908f268f
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mchung
parents:
726
diff
changeset
|
875 jt->get_thread_stat()->perf_timers_addr(), |
|
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mchung
parents:
726
diff
changeset
|
876 PerfClassTraceTime::DEFINE_CLASS); |
|
6a93908f268f
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mchung
parents:
726
diff
changeset
|
877 |
|
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
726
diff
changeset
|
878 if (UsePerfData) { |
|
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
726
diff
changeset
|
879 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
|
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
726
diff
changeset
|
880 } |
|
6a93908f268f
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726
diff
changeset
|
881 |
| 0 | 882 // Since exceptions can be thrown, class initialization can take place |
| 883 // if name is NULL no check for class name in .class stream has to be made. | |
|
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|
884 TempNewSymbol class_name = NULL; |
| 0 | 885 if (name != NULL) { |
| 886 const int str_len = (int)strlen(name); | |
|
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|
887 if (str_len > Symbol::max_length()) { |
| 0 | 888 // It's impossible to create this class; the name cannot fit |
| 889 // into the constant pool. | |
| 890 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 891 } | |
|
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|
892 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
| 0 | 893 } |
| 894 | |
| 895 ResourceMark rm(THREAD); | |
| 896 ClassFileStream st((u1*) buf, len, (char *)source); | |
| 897 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
| 898 if (UsePerfData) { | |
| 899 is_lock_held_by_thread(class_loader, | |
| 900 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
| 901 THREAD); | |
| 902 } | |
| 903 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
|
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904 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, |
| 0 | 905 protection_domain, &st, |
|
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906 verify != 0, |
| 0 | 907 CHECK_NULL); |
| 908 | |
| 909 if (TraceClassResolution && k != NULL) { | |
| 910 trace_class_resolution(k); | |
| 911 } | |
| 912 | |
| 6983 | 913 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
| 0 | 914 } |
| 915 | |
| 916 | |
| 917 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
| 918 JVMWrapper2("JVM_DefineClass %s", name); | |
| 919 | |
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920 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
| 0 | 921 JVM_END |
| 922 | |
| 923 | |
| 924 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
| 925 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
| 926 | |
|
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927 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
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928 JVM_END |
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929 |
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930 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
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931 jobject loader, const jbyte *buf, |
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932 jsize len, jobject pd, |
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933 const char *source, jboolean verify)) |
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934 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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935 |
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936 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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937 JVM_END |
| 0 | 938 |
| 939 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
| 940 JVMWrapper("JVM_FindLoadedClass"); | |
| 941 ResourceMark rm(THREAD); | |
| 942 | |
| 943 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 944 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
| 945 | |
| 946 const char* str = java_lang_String::as_utf8_string(string()); | |
| 947 // Sanity check, don't expect null | |
| 948 if (str == NULL) return NULL; | |
| 949 | |
| 950 const int str_len = (int)strlen(str); | |
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951 if (str_len > Symbol::max_length()) { |
| 0 | 952 // It's impossible to create this class; the name cannot fit |
| 953 // into the constant pool. | |
| 954 return NULL; | |
| 955 } | |
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956 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
| 0 | 957 |
| 958 // Security Note: | |
| 959 // The Java level wrapper will perform the necessary security check allowing | |
| 960 // us to pass the NULL as the initiating class loader. | |
| 961 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
| 962 if (UsePerfData) { | |
| 963 is_lock_held_by_thread(h_loader, | |
| 964 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
| 965 THREAD); | |
| 966 } | |
| 967 | |
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968 Klass* k = SystemDictionary::find_instance_or_array_klass(klass_name, |
| 0 | 969 h_loader, |
| 970 Handle(), | |
| 971 CHECK_NULL); | |
| 972 | |
| 973 return (k == NULL) ? NULL : | |
| 6983 | 974 (jclass) JNIHandles::make_local(env, k->java_mirror()); |
| 0 | 975 JVM_END |
| 976 | |
| 977 | |
| 978 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
| 979 | |
| 980 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
| 981 assert (cls != NULL, "illegal class"); | |
| 982 JVMWrapper("JVM_GetClassName"); | |
| 983 JvmtiVMObjectAllocEventCollector oam; | |
| 984 ResourceMark rm(THREAD); | |
| 985 const char* name; | |
| 986 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 987 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
| 988 } else { | |
| 989 // Consider caching interned string in Klass | |
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990 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 0 | 991 assert(k->is_klass(), "just checking"); |
| 6983 | 992 name = k->external_name(); |
| 0 | 993 } |
| 994 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
| 995 return (jstring) JNIHandles::make_local(env, result); | |
| 996 JVM_END | |
| 997 | |
| 998 | |
| 999 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
| 1000 JVMWrapper("JVM_GetClassInterfaces"); | |
| 1001 JvmtiVMObjectAllocEventCollector oam; | |
| 1002 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1003 | |
| 1004 // Special handling for primitive objects | |
| 1005 if (java_lang_Class::is_primitive(mirror)) { | |
| 1006 // Primitive objects does not have any interfaces | |
| 1142 | 1007 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1008 return (jobjectArray) JNIHandles::make_local(env, r); |
| 1009 } | |
| 1010 | |
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1011 KlassHandle klass(thread, java_lang_Class::as_Klass(mirror)); |
| 0 | 1012 // Figure size of result array |
| 1013 int size; | |
| 1014 if (klass->oop_is_instance()) { | |
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1015 size = InstanceKlass::cast(klass())->local_interfaces()->length(); |
| 0 | 1016 } else { |
| 1017 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
| 1018 size = 2; | |
| 1019 } | |
| 1020 | |
| 1021 // Allocate result array | |
| 1142 | 1022 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
| 0 | 1023 objArrayHandle result (THREAD, r); |
| 1024 // Fill in result | |
| 1025 if (klass->oop_is_instance()) { | |
| 1026 // Regular instance klass, fill in all local interfaces | |
| 1027 for (int index = 0; index < size; index++) { | |
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1028 Klass* k = InstanceKlass::cast(klass())->local_interfaces()->at(index); |
| 6983 | 1029 result->obj_at_put(index, k->java_mirror()); |
| 0 | 1030 } |
| 1031 } else { | |
| 1032 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
| 6983 | 1033 result->obj_at_put(0, SystemDictionary::Cloneable_klass()->java_mirror()); |
| 1034 result->obj_at_put(1, SystemDictionary::Serializable_klass()->java_mirror()); | |
| 0 | 1035 } |
| 1036 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1037 JVM_END | |
| 1038 | |
| 1039 | |
| 1040 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
| 1041 JVMWrapper("JVM_GetClassLoader"); | |
| 1042 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1043 return NULL; | |
| 1044 } | |
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1045 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1046 oop loader = k->class_loader(); |
| 0 | 1047 return JNIHandles::make_local(env, loader); |
| 1048 JVM_END | |
| 1049 | |
| 1050 | |
| 1051 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
| 1052 JVMWrapper("JVM_IsInterface"); | |
| 1053 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1054 if (java_lang_Class::is_primitive(mirror)) { | |
| 1055 return JNI_FALSE; | |
| 1056 } | |
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1057 Klass* k = java_lang_Class::as_Klass(mirror); |
| 6983 | 1058 jboolean result = k->is_interface(); |
| 1059 assert(!result || k->oop_is_instance(), | |
| 0 | 1060 "all interfaces are instance types"); |
| 1061 // The compiler intrinsic for isInterface tests the | |
| 1062 // Klass::_access_flags bits in the same way. | |
| 1063 return result; | |
| 1064 JVM_END | |
| 1065 | |
| 1066 | |
| 1067 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
| 1068 JVMWrapper("JVM_GetClassSigners"); | |
| 1069 JvmtiVMObjectAllocEventCollector oam; | |
| 1070 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1071 // There are no signers for primitive types | |
| 1072 return NULL; | |
| 1073 } | |
| 1074 | |
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1075 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 1076 objArrayOop signers = NULL; |
| 6983 | 1077 if (k->oop_is_instance()) { |
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1078 signers = InstanceKlass::cast(k)->signers(); |
| 0 | 1079 } |
| 1080 | |
| 1081 // If there are no signers set in the class, or if the class | |
| 1082 // is an array, return NULL. | |
| 1083 if (signers == NULL) return NULL; | |
| 1084 | |
| 1085 // copy of the signers array | |
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1086 Klass* element = ObjArrayKlass::cast(signers->klass())->element_klass(); |
| 0 | 1087 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); |
| 1088 for (int index = 0; index < signers->length(); index++) { | |
| 1089 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
| 1090 } | |
| 1091 | |
| 1092 // return the copy | |
| 1093 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
| 1094 JVM_END | |
| 1095 | |
| 1096 | |
| 1097 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
| 1098 JVMWrapper("JVM_SetClassSigners"); | |
| 1099 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1100 // This call is ignored for primitive types and arrays. | |
| 1101 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
| 1102 // be called with an array. Only the bootstrap loader creates arrays. | |
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1103 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1104 if (k->oop_is_instance()) { |
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1105 InstanceKlass::cast(k)->set_signers(objArrayOop(JNIHandles::resolve(signers))); |
| 0 | 1106 } |
| 1107 } | |
| 1108 JVM_END | |
| 1109 | |
| 1110 | |
| 1111 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
| 1112 JVMWrapper("JVM_GetProtectionDomain"); | |
| 1113 if (JNIHandles::resolve(cls) == NULL) { | |
| 1114 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
| 1115 } | |
| 1116 | |
| 1117 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1118 // Primitive types does not have a protection domain. | |
| 1119 return NULL; | |
| 1120 } | |
| 1121 | |
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1122 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 6983 | 1123 return (jobject) JNIHandles::make_local(env, k->protection_domain()); |
| 0 | 1124 JVM_END |
| 1125 | |
| 1126 | |
| 1127 // Obsolete since 1.2 (Class.setProtectionDomain removed), although | |
| 1128 // still defined in core libraries as of 1.5. | |
| 1129 JVM_ENTRY(void, JVM_SetProtectionDomain(JNIEnv *env, jclass cls, jobject protection_domain)) | |
| 1130 JVMWrapper("JVM_SetProtectionDomain"); | |
| 1131 if (JNIHandles::resolve(cls) == NULL) { | |
| 1132 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 1133 } | |
| 1134 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1135 // Call is ignored for primitive types | |
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1136 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 0 | 1137 |
| 1138 // cls won't be an array, as this called only from ClassLoader.defineClass | |
| 6983 | 1139 if (k->oop_is_instance()) { |
| 0 | 1140 oop pd = JNIHandles::resolve(protection_domain); |
| 1141 assert(pd == NULL || pd->is_oop(), "just checking"); | |
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1142 InstanceKlass::cast(k)->set_protection_domain(pd); |
| 0 | 1143 } |
| 1144 } | |
| 1145 JVM_END | |
| 1146 | |
| 1147 | |
| 1148 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
| 1149 JVMWrapper("JVM_DoPrivileged"); | |
| 1150 | |
| 1151 if (action == NULL) { | |
| 1152 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
| 1153 } | |
| 1154 | |
| 1155 // Stack allocated list of privileged stack elements | |
| 1156 PrivilegedElement pi; | |
| 1157 | |
| 1158 // Check that action object understands "Object run()" | |
| 1159 Handle object (THREAD, JNIHandles::resolve(action)); | |
| 1160 | |
| 1161 // get run() method | |
| 6983 | 1162 Method* m_oop = object->klass()->uncached_lookup_method( |
| 0 | 1163 vmSymbols::run_method_name(), |
| 1164 vmSymbols::void_object_signature()); | |
| 1165 methodHandle m (THREAD, m_oop); | |
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1166 if (m.is_null() || !m->is_method() || !m()->is_public() || m()->is_static()) { |
| 0 | 1167 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); |
| 1168 } | |
| 1169 | |
| 1170 // Compute the frame initiating the do privileged operation and setup the privileged stack | |
| 1171 vframeStream vfst(thread); | |
| 1172 vfst.security_get_caller_frame(1); | |
| 1173 | |
| 1174 if (!vfst.at_end()) { | |
| 1175 pi.initialize(&vfst, JNIHandles::resolve(context), thread->privileged_stack_top(), CHECK_NULL); | |
| 1176 thread->set_privileged_stack_top(&pi); | |
| 1177 } | |
| 1178 | |
| 1179 | |
| 1180 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
| 1181 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
| 1182 Handle pending_exception; | |
| 1183 JavaValue result(T_OBJECT); | |
| 1184 JavaCallArguments args(object); | |
| 1185 JavaCalls::call(&result, m, &args, THREAD); | |
| 1186 | |
| 1187 // done with action, remove ourselves from the list | |
| 1188 if (!vfst.at_end()) { | |
| 1189 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
| 1190 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
| 1191 } | |
| 1192 | |
| 1193 if (HAS_PENDING_EXCEPTION) { | |
| 1194 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
| 1195 CLEAR_PENDING_EXCEPTION; | |
| 1196 | |
| 1142 | 1197 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
| 1198 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
| 0 | 1199 // Throw a java.security.PrivilegedActionException(Exception e) exception |
| 1200 JavaCallArguments args(pending_exception); | |
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1201 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1202 vmSymbols::exception_void_signature(), |
| 0 | 1203 &args); |
| 1204 } | |
| 1205 } | |
| 1206 | |
| 1207 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
| 1208 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
| 1209 JVM_END | |
| 1210 | |
| 1211 | |
| 1212 // Returns the inherited_access_control_context field of the running thread. | |
| 1213 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1214 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
| 1215 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
| 1216 return JNIHandles::make_local(env, result); | |
| 1217 JVM_END | |
| 1218 | |
| 1219 class RegisterArrayForGC { | |
| 1220 private: | |
| 1221 JavaThread *_thread; | |
| 1222 public: | |
| 1223 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
| 1224 _thread = thread; | |
| 1225 _thread->register_array_for_gc(array); | |
| 1226 } | |
| 1227 | |
| 1228 ~RegisterArrayForGC() { | |
| 1229 _thread->register_array_for_gc(NULL); | |
| 1230 } | |
| 1231 }; | |
| 1232 | |
| 1233 | |
| 1234 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1235 JVMWrapper("JVM_GetStackAccessControlContext"); | |
| 1236 if (!UsePrivilegedStack) return NULL; | |
| 1237 | |
| 1238 ResourceMark rm(THREAD); | |
| 1239 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
| 1240 JvmtiVMObjectAllocEventCollector oam; | |
| 1241 | |
| 1242 // count the protection domains on the execution stack. We collapse | |
| 1243 // duplicate consecutive protection domains into a single one, as | |
| 1244 // well as stopping when we hit a privileged frame. | |
| 1245 | |
| 1246 // Use vframeStream to iterate through Java frames | |
| 1247 vframeStream vfst(thread); | |
| 1248 | |
| 1249 oop previous_protection_domain = NULL; | |
| 1250 Handle privileged_context(thread, NULL); | |
| 1251 bool is_privileged = false; | |
| 1252 oop protection_domain = NULL; | |
| 1253 | |
| 1254 for(; !vfst.at_end(); vfst.next()) { | |
| 1255 // get method of frame | |
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1256 Method* method = vfst.method(); |
| 0 | 1257 intptr_t* frame_id = vfst.frame_id(); |
| 1258 | |
| 1259 // check the privileged frames to see if we have a match | |
| 1260 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
| 1261 // this frame is privileged | |
| 1262 is_privileged = true; | |
| 1263 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
| 1264 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
| 1265 } else { | |
|
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1266 protection_domain = method->method_holder()->protection_domain(); |
| 0 | 1267 } |
| 1268 | |
| 1269 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
| 1270 local_array->push(protection_domain); | |
| 1271 previous_protection_domain = protection_domain; | |
| 1272 } | |
| 1273 | |
| 1274 if (is_privileged) break; | |
| 1275 } | |
| 1276 | |
| 1277 | |
| 1278 // either all the domains on the stack were system domains, or | |
| 1279 // we had a privileged system domain | |
| 1280 if (local_array->is_empty()) { | |
| 1281 if (is_privileged && privileged_context.is_null()) return NULL; | |
| 1282 | |
| 1283 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
| 1284 return JNIHandles::make_local(env, result); | |
| 1285 } | |
| 1286 | |
| 1287 // the resource area must be registered in case of a gc | |
| 1288 RegisterArrayForGC ragc(thread, local_array); | |
| 1142 | 1289 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
| 0 | 1290 local_array->length(), CHECK_NULL); |
| 1291 objArrayHandle h_context(thread, context); | |
| 1292 for (int index = 0; index < local_array->length(); index++) { | |
| 1293 h_context->obj_at_put(index, local_array->at(index)); | |
| 1294 } | |
| 1295 | |
| 1296 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
| 1297 | |
| 1298 return JNIHandles::make_local(env, result); | |
| 1299 JVM_END | |
| 1300 | |
| 1301 | |
| 1302 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
| 1303 JVMWrapper("JVM_IsArrayClass"); | |
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1304 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1305 return (k != NULL) && k->oop_is_array() ? true : false; |
| 0 | 1306 JVM_END |
| 1307 | |
| 1308 | |
| 1309 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
| 1310 JVMWrapper("JVM_IsPrimitiveClass"); | |
| 1311 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1312 return (jboolean) java_lang_Class::is_primitive(mirror); | |
| 1313 JVM_END | |
| 1314 | |
| 1315 | |
| 1316 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
| 1317 JVMWrapper("JVM_GetComponentType"); | |
| 1318 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1319 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
| 1320 return (jclass) JNIHandles::make_local(env, result); | |
| 1321 JVM_END | |
| 1322 | |
| 1323 | |
| 1324 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
| 1325 JVMWrapper("JVM_GetClassModifiers"); | |
| 1326 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1327 // Primitive type | |
| 1328 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 1329 } | |
| 1330 | |
| 6983 | 1331 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 1332 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); |
| 1333 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
| 1334 return k->modifier_flags(); | |
| 1335 JVM_END | |
| 1336 | |
| 1337 | |
| 1338 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
| 1339 | |
| 1340 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
| 1341 JvmtiVMObjectAllocEventCollector oam; | |
| 1342 // ofClass is a reference to a java_lang_Class object. The mirror object | |
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1343 // of an InstanceKlass |
| 0 | 1344 |
| 1345 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1346 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
| 1142 | 1347 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1348 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1349 } | |
| 1350 | |
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1351 instanceKlassHandle k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
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1352 InnerClassesIterator iter(k); |
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1353 |
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1354 if (iter.length() == 0) { |
| 0 | 1355 // Neither an inner nor outer class |
| 1142 | 1356 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1357 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1358 } | |
| 1359 | |
| 1360 // find inner class info | |
| 1361 constantPoolHandle cp(thread, k->constants()); | |
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1362 int length = iter.length(); |
| 0 | 1363 |
| 1364 // Allocate temp. result array | |
| 1142 | 1365 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
| 0 | 1366 objArrayHandle result (THREAD, r); |
| 1367 int members = 0; | |
| 1368 | |
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1369 for (; !iter.done(); iter.next()) { |
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1370 int ioff = iter.inner_class_info_index(); |
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1371 int ooff = iter.outer_class_info_index(); |
| 0 | 1372 |
| 1373 if (ioff != 0 && ooff != 0) { | |
| 1374 // Check to see if the name matches the class we're looking for | |
| 1375 // before attempting to find the class. | |
| 1376 if (cp->klass_name_at_matches(k, ooff)) { | |
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1377 Klass* outer_klass = cp->klass_at(ooff, CHECK_NULL); |
| 0 | 1378 if (outer_klass == k()) { |
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1379 Klass* ik = cp->klass_at(ioff, CHECK_NULL); |
| 0 | 1380 instanceKlassHandle inner_klass (THREAD, ik); |
| 1381 | |
| 1382 // Throws an exception if outer klass has not declared k as | |
| 1383 // an inner klass | |
|
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1384 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
| 0 | 1385 |
| 1386 result->obj_at_put(members, inner_klass->java_mirror()); | |
| 1387 members++; | |
| 1388 } | |
| 1389 } | |
| 1390 } | |
| 1391 } | |
| 1392 | |
| 1393 if (members != length) { | |
| 1394 // Return array of right length | |
| 1142 | 1395 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
| 0 | 1396 for(int i = 0; i < members; i++) { |
| 1397 res->obj_at_put(i, result->obj_at(i)); | |
| 1398 } | |
| 1399 return (jobjectArray)JNIHandles::make_local(env, res); | |
| 1400 } | |
| 1401 | |
| 1402 return (jobjectArray)JNIHandles::make_local(env, result()); | |
| 1403 JVM_END | |
| 1404 | |
| 1405 | |
| 1406 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
|
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1407 { |
| 0 | 1408 // ofClass is a reference to a java_lang_Class object. |
| 1409 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1410 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
| 0 | 1411 return NULL; |
| 1412 } | |
| 1413 | |
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1414 bool inner_is_member = false; |
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1415 Klass* outer_klass |
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1416 = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)) |
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1417 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
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1418 if (outer_klass == NULL) return NULL; // already a top-level class |
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1419 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
| 6983 | 1420 return (jclass) JNIHandles::make_local(env, outer_klass->java_mirror()); |
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1421 } |
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1422 JVM_END |
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1423 |
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1424 // should be in InstanceKlass.cpp, but is here for historical reasons |
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1425 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
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1426 bool* inner_is_member, |
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1427 TRAPS) { |
|
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1428 Thread* thread = THREAD; |
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1429 InnerClassesIterator iter(k); |
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1430 if (iter.length() == 0) { |
| 0 | 1431 // No inner class info => no declaring class |
| 1432 return NULL; | |
| 1433 } | |
| 1434 | |
| 1435 constantPoolHandle i_cp(thread, k->constants()); | |
| 1436 | |
| 1437 bool found = false; | |
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1438 Klass* ok; |
| 0 | 1439 instanceKlassHandle outer_klass; |
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1440 *inner_is_member = false; |
| 0 | 1441 |
| 1442 // Find inner_klass attribute | |
|
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1443 for (; !iter.done() && !found; iter.next()) { |
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1444 int ioff = iter.inner_class_info_index(); |
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1445 int ooff = iter.outer_class_info_index(); |
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1446 int noff = iter.inner_name_index(); |
|
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1447 if (ioff != 0) { |
| 0 | 1448 // Check to see if the name matches the class we're looking for |
| 1449 // before attempting to find the class. | |
| 1450 if (i_cp->klass_name_at_matches(k, ioff)) { | |
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1451 Klass* inner_klass = i_cp->klass_at(ioff, CHECK_NULL); |
|
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1452 found = (k() == inner_klass); |
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1453 if (found && ooff != 0) { |
| 0 | 1454 ok = i_cp->klass_at(ooff, CHECK_NULL); |
| 1455 outer_klass = instanceKlassHandle(thread, ok); | |
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1456 *inner_is_member = true; |
| 0 | 1457 } |
| 1458 } | |
| 1459 } | |
| 1460 } | |
| 1461 | |
|
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1462 if (found && outer_klass.is_null()) { |
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1463 // It may be anonymous; try for that. |
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1464 int encl_method_class_idx = k->enclosing_method_class_index(); |
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1465 if (encl_method_class_idx != 0) { |
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1466 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
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1467 outer_klass = instanceKlassHandle(thread, ok); |
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1468 *inner_is_member = false; |
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1469 } |
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1470 } |
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1471 |
| 0 | 1472 // If no inner class attribute found for this class. |
|
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1473 if (outer_klass.is_null()) return NULL; |
| 0 | 1474 |
| 1475 // Throws an exception if outer klass has not declared k as an inner klass | |
|
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1476 // We need evidence that each klass knows about the other, or else |
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1477 // the system could allow a spoof of an inner class to gain access rights. |
|
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1478 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
|
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1479 return outer_klass(); |
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1480 } |
| 0 | 1481 |
| 1482 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
| 1483 assert (cls != NULL, "illegal class"); | |
| 1484 JVMWrapper("JVM_GetClassSignature"); | |
| 1485 JvmtiVMObjectAllocEventCollector oam; | |
| 1486 ResourceMark rm(THREAD); | |
| 1487 // Return null for arrays and primatives | |
| 1488 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1489 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 6983 | 1490 if (k->oop_is_instance()) { |
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1491 Symbol* sym = InstanceKlass::cast(k)->generic_signature(); |
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1492 if (sym == NULL) return NULL; |
| 0 | 1493 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 1494 return (jstring) JNIHandles::make_local(env, str()); | |
| 1495 } | |
| 1496 } | |
| 1497 return NULL; | |
| 1498 JVM_END | |
| 1499 | |
| 1500 | |
| 1501 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
| 1502 assert (cls != NULL, "illegal class"); | |
| 1503 JVMWrapper("JVM_GetClassAnnotations"); | |
|
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1504 |
| 0 | 1505 // Return null for arrays and primitives |
| 1506 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1507 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 6983 | 1508 if (k->oop_is_instance()) { |
|
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1509 typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->class_annotations(), CHECK_NULL); |
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1510 return (jbyteArray) JNIHandles::make_local(env, a); |
| 0 | 1511 } |
| 1512 } | |
| 1513 return NULL; | |
| 1514 JVM_END | |
| 1515 | |
| 1516 | |
|
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1517 static bool jvm_get_field_common(jobject field, fieldDescriptor& fd, TRAPS) { |
| 0 | 1518 // some of this code was adapted from from jni_FromReflectedField |
| 1519 | |
| 1520 oop reflected = JNIHandles::resolve_non_null(field); | |
| 1521 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
|
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1522 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 1523 int slot = java_lang_reflect_Field::slot(reflected); |
| 1524 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
| 1525 | |
| 1526 KlassHandle kh(THREAD, k); | |
|
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1527 intptr_t offset = InstanceKlass::cast(kh())->field_offset(slot); |
| 0 | 1528 |
| 1529 if (modifiers & JVM_ACC_STATIC) { | |
| 1530 // for static fields we only look in the current class | |
|
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1531 if (!InstanceKlass::cast(kh())->find_local_field_from_offset(offset, true, &fd)) { |
| 0 | 1532 assert(false, "cannot find static field"); |
|
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1533 return false; |
| 0 | 1534 } |
| 1535 } else { | |
| 1536 // for instance fields we start with the current class and work | |
| 1537 // our way up through the superclass chain | |
|
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1538 if (!InstanceKlass::cast(kh())->find_field_from_offset(offset, false, &fd)) { |
| 0 | 1539 assert(false, "cannot find instance field"); |
|
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|
1540 return false; |
| 0 | 1541 } |
| 1542 } | |
|
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|
1543 return true; |
|
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|
1544 } |
|
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|
1545 |
|
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|
1546 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) |
|
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1547 // field is a handle to a java.lang.reflect.Field object |
|
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|
1548 assert(field != NULL, "illegal field"); |
|
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|
1549 JVMWrapper("JVM_GetFieldAnnotations"); |
|
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|
1550 |
|
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|
1551 fieldDescriptor fd; |
|
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|
1552 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
|
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1553 if (!gotFd) { |
|
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|
1554 return NULL; |
|
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|
1555 } |
| 0 | 1556 |
|
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1557 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.annotations(), THREAD)); |
| 0 | 1558 JVM_END |
| 1559 | |
| 1560 | |
|
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1561 static Method* jvm_get_method_common(jobject method) { |
| 0 | 1562 // some of this code was adapted from from jni_FromReflectedMethod |
| 1563 | |
| 1564 oop reflected = JNIHandles::resolve_non_null(method); | |
| 1565 oop mirror = NULL; | |
| 1566 int slot = 0; | |
| 1567 | |
| 1142 | 1568 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
| 0 | 1569 mirror = java_lang_reflect_Constructor::clazz(reflected); |
| 1570 slot = java_lang_reflect_Constructor::slot(reflected); | |
| 1571 } else { | |
| 1142 | 1572 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
| 0 | 1573 "wrong type"); |
| 1574 mirror = java_lang_reflect_Method::clazz(reflected); | |
| 1575 slot = java_lang_reflect_Method::slot(reflected); | |
| 1576 } | |
|
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1577 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 1578 |
|
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1579 Method* m = InstanceKlass::cast(k)->method_with_idnum(slot); |
|
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1580 assert(m != NULL, "cannot find method"); |
|
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|
1581 return m; // caller has to deal with NULL in product mode |
| 0 | 1582 } |
| 1583 | |
| 1584 | |
| 1585 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
| 1586 JVMWrapper("JVM_GetMethodAnnotations"); | |
| 1587 | |
| 1588 // method is a handle to a java.lang.reflect.Method object | |
|
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|
1589 Method* m = jvm_get_method_common(method); |
|
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|
1590 if (m == NULL) { |
|
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|
1591 return NULL; |
|
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|
1592 } |
|
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|
1593 |
|
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|
1594 return (jbyteArray) JNIHandles::make_local(env, |
|
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|
1595 Annotations::make_java_array(m->annotations(), THREAD)); |
| 0 | 1596 JVM_END |
| 1597 | |
| 1598 | |
| 1599 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
| 1600 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
| 1601 | |
| 1602 // method is a handle to a java.lang.reflect.Method object | |
|
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|
1603 Method* m = jvm_get_method_common(method); |
|
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|
1604 if (m == NULL) { |
|
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|
1605 return NULL; |
|
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|
1606 } |
|
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|
1607 |
|
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1608 return (jbyteArray) JNIHandles::make_local(env, |
|
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|
1609 Annotations::make_java_array(m->annotation_default(), THREAD)); |
| 0 | 1610 JVM_END |
| 1611 | |
| 1612 | |
| 1613 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
| 1614 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
| 1615 | |
| 1616 // method is a handle to a java.lang.reflect.Method object | |
|
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|
1617 Method* m = jvm_get_method_common(method); |
|
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|
1618 if (m == NULL) { |
|
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|
1619 return NULL; |
|
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changeset
|
1620 } |
|
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|
1621 |
|
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|
1622 return (jbyteArray) JNIHandles::make_local(env, |
|
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|
1623 Annotations::make_java_array(m->parameter_annotations(), THREAD)); |
| 0 | 1624 JVM_END |
| 1625 | |
|
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|
1626 /* Type use annotations support (JDK 1.8) */ |
|
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|
1627 |
|
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|
1628 JVM_ENTRY(jbyteArray, JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls)) |
|
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|
1629 assert (cls != NULL, "illegal class"); |
|
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|
1630 JVMWrapper("JVM_GetClassTypeAnnotations"); |
|
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|
1631 ResourceMark rm(THREAD); |
|
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|
1632 // Return null for arrays and primitives |
|
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|
1633 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
|
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|
1634 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
|
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|
1635 if (k->oop_is_instance()) { |
| 8031 | 1636 AnnotationArray* type_annotations = InstanceKlass::cast(k)->class_type_annotations(); |
|
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|
1637 if (type_annotations != NULL) { |
| 8031 | 1638 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
|
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|
1639 return (jbyteArray) JNIHandles::make_local(env, a); |
|
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|
1640 } |
|
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|
1641 } |
|
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|
1642 } |
|
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|
1643 return NULL; |
|
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|
1644 JVM_END |
|
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|
1645 |
|
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|
1646 JVM_ENTRY(jbyteArray, JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method)) |
|
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|
1647 assert (method != NULL, "illegal method"); |
|
1916ca1dec2f
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changeset
|
1648 JVMWrapper("JVM_GetMethodTypeAnnotations"); |
|
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|
1649 |
|
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changeset
|
1650 // method is a handle to a java.lang.reflect.Method object |
|
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changeset
|
1651 Method* m = jvm_get_method_common(method); |
|
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|
1652 if (m == NULL) { |
|
1916ca1dec2f
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changeset
|
1653 return NULL; |
|
1916ca1dec2f
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changeset
|
1654 } |
|
1916ca1dec2f
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|
1655 |
|
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changeset
|
1656 AnnotationArray* type_annotations = m->type_annotations(); |
|
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|
1657 if (type_annotations != NULL) { |
|
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changeset
|
1658 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
|
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|
1659 return (jbyteArray) JNIHandles::make_local(env, a); |
|
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|
1660 } |
|
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|
1661 |
|
1916ca1dec2f
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changeset
|
1662 return NULL; |
|
1916ca1dec2f
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changeset
|
1663 JVM_END |
|
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|
1664 |
|
1916ca1dec2f
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changeset
|
1665 JVM_ENTRY(jbyteArray, JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field)) |
|
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changeset
|
1666 assert (field != NULL, "illegal field"); |
|
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changeset
|
1667 JVMWrapper("JVM_GetFieldTypeAnnotations"); |
|
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changeset
|
1668 |
|
1916ca1dec2f
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changeset
|
1669 fieldDescriptor fd; |
|
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changeset
|
1670 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
|
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|
1671 if (!gotFd) { |
|
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|
1672 return NULL; |
|
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changeset
|
1673 } |
|
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|
1674 |
|
1916ca1dec2f
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changeset
|
1675 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.type_annotations(), THREAD)); |
|
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changeset
|
1676 JVM_END |
|
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changeset
|
1677 |
|
7588
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|
1678 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { |
|
f9eb431c3efe
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|
1679 if (!cp->is_within_bounds(index)) { |
|
f9eb431c3efe
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changeset
|
1680 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); |
|
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|
1681 } |
|
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1682 } |
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1683 |
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1684 JVM_ENTRY(jobjectArray, JVM_GetMethodParameters(JNIEnv *env, jobject method)) |
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1685 { |
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1686 JVMWrapper("JVM_GetMethodParameters"); |
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1687 // method is a handle to a java.lang.reflect.Method object |
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1688 Method* method_ptr = jvm_get_method_common(method); |
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1689 methodHandle mh (THREAD, method_ptr); |
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1690 Handle reflected_method (THREAD, JNIHandles::resolve_non_null(method)); |
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1691 const int num_params = mh->method_parameters_length(); |
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1692 |
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1693 if (0 != num_params) { |
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1694 // make sure all the symbols are properly formatted |
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1695 for (int i = 0; i < num_params; i++) { |
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1696 MethodParametersElement* params = mh->method_parameters_start(); |
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1697 int index = params[i].name_cp_index; |
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1698 bounds_check(mh->constants(), index, CHECK_NULL); |
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1699 |
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1700 if (0 != index && !mh->constants()->tag_at(index).is_utf8()) { |
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1701 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), |
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1702 "Wrong type at constant pool index"); |
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1703 } |
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1704 |
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1705 } |
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1706 |
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1707 objArrayOop result_oop = oopFactory::new_objArray(SystemDictionary::reflect_Parameter_klass(), num_params, CHECK_NULL); |
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1708 objArrayHandle result (THREAD, result_oop); |
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1709 |
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1710 for (int i = 0; i < num_params; i++) { |
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1711 MethodParametersElement* params = mh->method_parameters_start(); |
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1712 // For a 0 index, give a NULL symbol |
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1713 Symbol* const sym = 0 != params[i].name_cp_index ? |
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1714 mh->constants()->symbol_at(params[i].name_cp_index) : NULL; |
|
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1715 int flags = params[i].flags; |
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1716 oop param = Reflection::new_parameter(reflected_method, i, sym, |
|
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1717 flags, CHECK_NULL); |
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1718 result->obj_at_put(i, param); |
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1719 } |
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1720 return (jobjectArray)JNIHandles::make_local(env, result()); |
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1721 } else { |
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1722 return (jobjectArray)NULL; |
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1723 } |
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1724 } |
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1725 JVM_END |
| 0 | 1726 |
| 1727 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
| 1728 | |
| 1729 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1730 { | |
| 1731 JVMWrapper("JVM_GetClassDeclaredFields"); | |
| 1732 JvmtiVMObjectAllocEventCollector oam; | |
| 1733 | |
| 1734 // Exclude primitive types and array types | |
| 1735 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1736 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
| 0 | 1737 // Return empty array |
| 1142 | 1738 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
| 0 | 1739 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1740 } | |
| 1741 | |
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1742 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
| 0 | 1743 constantPoolHandle cp(THREAD, k->constants()); |
| 1744 | |
| 1745 // Ensure class is linked | |
| 1746 k->link_class(CHECK_NULL); | |
| 1747 | |
| 1748 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
| 1749 bool skip_backtrace = false; | |
| 1750 | |
| 1751 // Allocate result | |
| 1752 int num_fields; | |
| 1753 | |
| 1754 if (publicOnly) { | |
| 1755 num_fields = 0; | |
| 3938 | 1756 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
| 1757 if (fs.access_flags().is_public()) ++num_fields; | |
| 0 | 1758 } |
| 1759 } else { | |
| 3938 | 1760 num_fields = k->java_fields_count(); |
| 0 | 1761 |
| 1142 | 1762 if (k() == SystemDictionary::Throwable_klass()) { |
| 0 | 1763 num_fields--; |
| 1764 skip_backtrace = true; | |
| 1765 } | |
| 1766 } | |
| 1767 | |
| 1142 | 1768 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
| 0 | 1769 objArrayHandle result (THREAD, r); |
| 1770 | |
| 1771 int out_idx = 0; | |
| 1772 fieldDescriptor fd; | |
| 3938 | 1773 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
| 0 | 1774 if (skip_backtrace) { |
| 1775 // 4496456 skip java.lang.Throwable.backtrace | |
| 3938 | 1776 int offset = fs.offset(); |
| 0 | 1777 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
| 1778 } | |
| 1779 | |
| 3938 | 1780 if (!publicOnly || fs.access_flags().is_public()) { |
| 1781 fd.initialize(k(), fs.index()); | |
| 0 | 1782 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
| 1783 result->obj_at_put(out_idx, field); | |
| 1784 ++out_idx; | |
| 1785 } | |
| 1786 } | |
| 1787 assert(out_idx == num_fields, "just checking"); | |
| 1788 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1789 } | |
| 1790 JVM_END | |
| 1791 | |
| 1792 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1793 { | |
| 1794 JVMWrapper("JVM_GetClassDeclaredMethods"); | |
| 1795 JvmtiVMObjectAllocEventCollector oam; | |
| 1796 | |
| 1797 // Exclude primitive types and array types | |
| 1798 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
| 6983 | 1799 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
| 0 | 1800 // Return empty array |
| 1142 | 1801 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), 0, CHECK_NULL); |
| 0 | 1802 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1803 } | |
| 1804 | |
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1805 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
| 0 | 1806 |
| 1807 // Ensure class is linked | |
| 1808 k->link_class(CHECK_NULL); | |
| 1809 | |
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1810 Array<Method*>* methods = k->methods(); |
| 0 | 1811 int methods_length = methods->length(); |
| 1812 int num_methods = 0; | |
| 1813 | |
| 1814 int i; | |
| 1815 for (i = 0; i < methods_length; i++) { | |
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1816 methodHandle method(THREAD, methods->at(i)); |
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1817 if (!method->is_initializer() && !method->is_overpass()) { |
| 0 | 1818 if (!publicOnly || method->is_public()) { |
| 1819 ++num_methods; | |
| 1820 } | |
| 1821 } | |
| 1822 } | |
| 1823 | |
| 1824 // Allocate result | |
| 1142 | 1825 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), num_methods, CHECK_NULL); |
| 0 | 1826 objArrayHandle result (THREAD, r); |
| 1827 | |
| 1828 int out_idx = 0; | |
| 1829 for (i = 0; i < methods_length; i++) { | |
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1830 methodHandle method(THREAD, methods->at(i)); |
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1831 if (!method->is_initializer() && !method->is_overpass()) { |
| 0 | 1832 if (!publicOnly || method->is_public()) { |
| 1833 oop m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); | |
| 1834 result->obj_at_put(out_idx, m); | |
| 1835 ++out_idx; | |
| 1836 } | |
| 1837 } | |
| 1838 } | |
| 1839 assert(out_idx == num_methods, "just checking"); | |
| 1840 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1841 } | |
| 1842 JVM_END | |
| 1843 | |
| 1844 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1845 { | |
| 1846 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
| 1847 JvmtiVMObjectAllocEventCollector oam; | |
| 1848 | |
| 1849 // Exclude primitive types and array types | |
| 1850 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
| 6983 | 1851 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
| 0 | 1852 // Return empty array |
| 1142 | 1853 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), 0 , CHECK_NULL); |
| 0 | 1854 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1855 } | |
| 1856 | |
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1857 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
| 0 | 1858 |
| 1859 // Ensure class is linked | |
| 1860 k->link_class(CHECK_NULL); | |
| 1861 | |
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1862 Array<Method*>* methods = k->methods(); |
| 0 | 1863 int methods_length = methods->length(); |
| 1864 int num_constructors = 0; | |
| 1865 | |
| 1866 int i; | |
| 1867 for (i = 0; i < methods_length; i++) { | |
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1868 methodHandle method(THREAD, methods->at(i)); |
| 0 | 1869 if (method->is_initializer() && !method->is_static()) { |
| 1870 if (!publicOnly || method->is_public()) { | |
| 1871 ++num_constructors; | |
| 1872 } | |
| 1873 } | |
| 1874 } | |
| 1875 | |
| 1876 // Allocate result | |
| 1142 | 1877 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), num_constructors, CHECK_NULL); |
| 0 | 1878 objArrayHandle result(THREAD, r); |
| 1879 | |
| 1880 int out_idx = 0; | |
| 1881 for (i = 0; i < methods_length; i++) { | |
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1882 methodHandle method(THREAD, methods->at(i)); |
| 0 | 1883 if (method->is_initializer() && !method->is_static()) { |
| 1884 if (!publicOnly || method->is_public()) { | |
| 1885 oop m = Reflection::new_constructor(method, CHECK_NULL); | |
| 1886 result->obj_at_put(out_idx, m); | |
| 1887 ++out_idx; | |
| 1888 } | |
| 1889 } | |
| 1890 } | |
| 1891 assert(out_idx == num_constructors, "just checking"); | |
| 1892 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1893 } | |
| 1894 JVM_END | |
| 1895 | |
| 1896 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
| 1897 { | |
| 1898 JVMWrapper("JVM_GetClassAccessFlags"); | |
| 1899 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1900 // Primitive type | |
| 1901 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 1902 } | |
| 1903 | |
| 6983 | 1904 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 1905 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; |
| 1906 } | |
| 1907 JVM_END | |
| 1908 | |
| 1909 | |
| 1910 // Constant pool access ////////////////////////////////////////////////////////// | |
| 1911 | |
| 1912 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
| 1913 { | |
| 1914 JVMWrapper("JVM_GetClassConstantPool"); | |
| 1915 JvmtiVMObjectAllocEventCollector oam; | |
| 1916 | |
| 1917 // Return null for primitives and arrays | |
| 1918 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
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1919 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1920 if (k->oop_is_instance()) { |
| 0 | 1921 instanceKlassHandle k_h(THREAD, k); |
| 1922 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
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1923 sun_reflect_ConstantPool::set_cp(jcp(), k_h->constants()); |
| 0 | 1924 return JNIHandles::make_local(jcp()); |
| 1925 } | |
| 1926 } | |
| 1927 return NULL; | |
| 1928 } | |
| 1929 JVM_END | |
| 1930 | |
| 1931 | |
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1932 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject obj, jobject unused)) |
| 0 | 1933 { |
| 1934 JVMWrapper("JVM_ConstantPoolGetSize"); | |
|
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1935 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1936 return cp->length(); |
| 1937 } | |
| 1938 JVM_END | |
| 1939 | |
| 1940 | |
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1941 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 1942 { |
| 1943 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
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1944 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1945 bounds_check(cp, index, CHECK_NULL); |
| 1946 constantTag tag = cp->tag_at(index); | |
| 1947 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 1948 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1949 } | |
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1950 Klass* k = cp->klass_at(index, CHECK_NULL); |
|
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1951 return (jclass) JNIHandles::make_local(k->java_mirror()); |
| 0 | 1952 } |
| 1953 JVM_END | |
| 1954 | |
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1955 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 1956 { |
| 1957 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
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1958 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1959 bounds_check(cp, index, CHECK_NULL); |
| 1960 constantTag tag = cp->tag_at(index); | |
| 1961 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 1962 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1963 } | |
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1964 Klass* k = ConstantPool::klass_at_if_loaded(cp, index); |
| 0 | 1965 if (k == NULL) return NULL; |
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1966 return (jclass) JNIHandles::make_local(k->java_mirror()); |
| 0 | 1967 } |
| 1968 JVM_END | |
| 1969 | |
| 1970 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 1971 constantTag tag = cp->tag_at(index); | |
| 1972 if (!tag.is_method() && !tag.is_interface_method()) { | |
| 1973 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1974 } | |
| 1975 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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1976 Klass* k_o; |
| 0 | 1977 if (force_resolution) { |
| 1978 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 1979 } else { | |
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1980 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
| 0 | 1981 if (k_o == NULL) return NULL; |
| 1982 } | |
| 1983 instanceKlassHandle k(THREAD, k_o); | |
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1984 Symbol* name = cp->uncached_name_ref_at(index); |
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1985 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 1986 methodHandle m (THREAD, k->find_method(name, sig)); |
| 1987 if (m.is_null()) { | |
| 1988 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
| 1989 } | |
| 1990 oop method; | |
| 1991 if (!m->is_initializer() || m->is_static()) { | |
| 1992 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
| 1993 } else { | |
| 1994 method = Reflection::new_constructor(m, CHECK_NULL); | |
| 1995 } | |
| 1996 return JNIHandles::make_local(method); | |
| 1997 } | |
| 1998 | |
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1999 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2000 { |
| 2001 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
| 2002 JvmtiVMObjectAllocEventCollector oam; | |
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2003 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2004 bounds_check(cp, index, CHECK_NULL); |
| 2005 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
| 2006 return res; | |
| 2007 } | |
| 2008 JVM_END | |
| 2009 | |
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2010 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2011 { |
| 2012 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
| 2013 JvmtiVMObjectAllocEventCollector oam; | |
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2014 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2015 bounds_check(cp, index, CHECK_NULL); |
| 2016 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
| 2017 return res; | |
| 2018 } | |
| 2019 JVM_END | |
| 2020 | |
| 2021 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 2022 constantTag tag = cp->tag_at(index); | |
| 2023 if (!tag.is_field()) { | |
| 2024 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2025 } | |
| 2026 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2027 Klass* k_o; |
| 0 | 2028 if (force_resolution) { |
| 2029 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 2030 } else { | |
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2031 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
| 0 | 2032 if (k_o == NULL) return NULL; |
| 2033 } | |
| 2034 instanceKlassHandle k(THREAD, k_o); | |
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2035 Symbol* name = cp->uncached_name_ref_at(index); |
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2036 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 2037 fieldDescriptor fd; |
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2038 Klass* target_klass = k->find_field(name, sig, &fd); |
| 0 | 2039 if (target_klass == NULL) { |
| 2040 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
| 2041 } | |
| 2042 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
| 2043 return JNIHandles::make_local(field); | |
| 2044 } | |
| 2045 | |
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2046 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject obj, jobject unusedl, jint index)) |
| 0 | 2047 { |
| 2048 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
| 2049 JvmtiVMObjectAllocEventCollector oam; | |
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2050 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2051 bounds_check(cp, index, CHECK_NULL); |
| 2052 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
| 2053 return res; | |
| 2054 } | |
| 2055 JVM_END | |
| 2056 | |
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2057 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2058 { |
| 2059 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
| 2060 JvmtiVMObjectAllocEventCollector oam; | |
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2061 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2062 bounds_check(cp, index, CHECK_NULL); |
| 2063 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
| 2064 return res; | |
| 2065 } | |
| 2066 JVM_END | |
| 2067 | |
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2068 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2069 { |
| 2070 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
| 2071 JvmtiVMObjectAllocEventCollector oam; | |
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2072 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2073 bounds_check(cp, index, CHECK_NULL); |
| 2074 constantTag tag = cp->tag_at(index); | |
| 2075 if (!tag.is_field_or_method()) { | |
| 2076 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2077 } | |
| 2078 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2079 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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2080 Symbol* member_name = cp->uncached_name_ref_at(index); |
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2081 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
| 1142 | 2082 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
| 0 | 2083 objArrayHandle dest(THREAD, dest_o); |
| 2084 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
| 2085 dest->obj_at_put(0, str()); | |
| 2086 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
| 2087 dest->obj_at_put(1, str()); | |
| 2088 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
| 2089 dest->obj_at_put(2, str()); | |
| 2090 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 2091 } | |
| 2092 JVM_END | |
| 2093 | |
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2094 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2095 { |
| 2096 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
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2097 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2098 bounds_check(cp, index, CHECK_0); |
| 2099 constantTag tag = cp->tag_at(index); | |
| 2100 if (!tag.is_int()) { | |
| 2101 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2102 } | |
| 2103 return cp->int_at(index); | |
| 2104 } | |
| 2105 JVM_END | |
| 2106 | |
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2107 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2108 { |
| 2109 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
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2110 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2111 bounds_check(cp, index, CHECK_(0L)); |
| 2112 constantTag tag = cp->tag_at(index); | |
| 2113 if (!tag.is_long()) { | |
| 2114 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2115 } | |
| 2116 return cp->long_at(index); | |
| 2117 } | |
| 2118 JVM_END | |
| 2119 | |
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2120 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2121 { |
| 2122 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
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2123 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2124 bounds_check(cp, index, CHECK_(0.0f)); |
| 2125 constantTag tag = cp->tag_at(index); | |
| 2126 if (!tag.is_float()) { | |
| 2127 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2128 } | |
| 2129 return cp->float_at(index); | |
| 2130 } | |
| 2131 JVM_END | |
| 2132 | |
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2133 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2134 { |
| 2135 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
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2136 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2137 bounds_check(cp, index, CHECK_(0.0)); |
| 2138 constantTag tag = cp->tag_at(index); | |
| 2139 if (!tag.is_double()) { | |
| 2140 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2141 } | |
| 2142 return cp->double_at(index); | |
| 2143 } | |
| 2144 JVM_END | |
| 2145 | |
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2146 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2147 { |
| 2148 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
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2149 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2150 bounds_check(cp, index, CHECK_NULL); |
| 2151 constantTag tag = cp->tag_at(index); | |
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2152 if (!tag.is_string()) { |
| 0 | 2153 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
| 2154 } | |
| 2155 oop str = cp->string_at(index, CHECK_NULL); | |
| 2156 return (jstring) JNIHandles::make_local(str); | |
| 2157 } | |
| 2158 JVM_END | |
| 2159 | |
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2160 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2161 { |
| 2162 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
| 2163 JvmtiVMObjectAllocEventCollector oam; | |
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2164 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2165 bounds_check(cp, index, CHECK_NULL); |
| 2166 constantTag tag = cp->tag_at(index); | |
| 2167 if (!tag.is_symbol()) { | |
| 2168 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2169 } | |
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2170 Symbol* sym = cp->symbol_at(index); |
| 0 | 2171 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 2172 return (jstring) JNIHandles::make_local(str()); | |
| 2173 } | |
| 2174 JVM_END | |
| 2175 | |
| 2176 | |
| 2177 // Assertion support. ////////////////////////////////////////////////////////// | |
| 2178 | |
| 2179 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
| 2180 JVMWrapper("JVM_DesiredAssertionStatus"); | |
| 2181 assert(cls != NULL, "bad class"); | |
| 2182 | |
| 2183 oop r = JNIHandles::resolve(cls); | |
| 2184 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
| 2185 if (java_lang_Class::is_primitive(r)) return false; | |
| 2186 | |
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2187 Klass* k = java_lang_Class::as_Klass(r); |
| 6983 | 2188 assert(k->oop_is_instance(), "must be an instance klass"); |
| 2189 if (! k->oop_is_instance()) return false; | |
| 0 | 2190 |
| 2191 ResourceMark rm(THREAD); | |
| 6983 | 2192 const char* name = k->name()->as_C_string(); |
| 2193 bool system_class = k->class_loader() == NULL; | |
| 0 | 2194 return JavaAssertions::enabled(name, system_class); |
| 2195 | |
| 2196 JVM_END | |
| 2197 | |
| 2198 | |
| 2199 // Return a new AssertionStatusDirectives object with the fields filled in with | |
| 2200 // command-line assertion arguments (i.e., -ea, -da). | |
| 2201 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
| 2202 JVMWrapper("JVM_AssertionStatusDirectives"); | |
| 2203 JvmtiVMObjectAllocEventCollector oam; | |
| 2204 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
| 2205 return JNIHandles::make_local(env, asd); | |
| 2206 JVM_END | |
| 2207 | |
| 2208 // Verification //////////////////////////////////////////////////////////////////////////////// | |
| 2209 | |
| 2210 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
| 2211 | |
| 2212 // RedefineClasses support: bug 6214132 caused verification to fail. | |
| 2213 // All functions from this section should call the jvmtiThreadSate function: | |
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2214 // Klass* class_to_verify_considering_redefinition(Klass* klass). |
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2215 // The function returns a Klass* of the _scratch_class if the verifier |
| 0 | 2216 // was invoked in the middle of the class redefinition. |
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2217 // Otherwise it returns its argument value which is the _the_class Klass*. |
| 0 | 2218 // Please, refer to the description in the jvmtiThreadSate.hpp. |
| 2219 | |
| 2220 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
| 2221 JVMWrapper("JVM_GetClassNameUTF"); | |
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2222 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2223 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2224 return k->name()->as_utf8(); |
| 0 | 2225 JVM_END |
| 2226 | |
| 2227 | |
| 2228 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
| 2229 JVMWrapper("JVM_GetClassCPTypes"); | |
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2230 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2231 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2232 // types will have length zero if this is not an InstanceKlass |
| 0 | 2233 // (length is determined by call to JVM_GetClassCPEntriesCount) |
| 6983 | 2234 if (k->oop_is_instance()) { |
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2235 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2236 for (int index = cp->length() - 1; index >= 0; index--) { |
| 2237 constantTag tag = cp->tag_at(index); | |
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2238 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : tag.value(); |
| 0 | 2239 } |
| 2240 } | |
| 2241 JVM_END | |
| 2242 | |
| 2243 | |
| 2244 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
| 2245 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
|
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2246 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2247 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2248 if (!k->oop_is_instance()) |
| 0 | 2249 return 0; |
|
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2250 return InstanceKlass::cast(k)->constants()->length(); |
| 0 | 2251 JVM_END |
| 2252 | |
| 2253 | |
| 2254 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
| 2255 JVMWrapper("JVM_GetClassFieldsCount"); | |
|
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|
2256 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2257 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2258 if (!k->oop_is_instance()) |
| 0 | 2259 return 0; |
|
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|
2260 return InstanceKlass::cast(k)->java_fields_count(); |
| 0 | 2261 JVM_END |
| 2262 | |
| 2263 | |
| 2264 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
| 2265 JVMWrapper("JVM_GetClassMethodsCount"); | |
|
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2266 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2267 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2268 if (!k->oop_is_instance()) |
| 0 | 2269 return 0; |
|
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2270 return InstanceKlass::cast(k)->methods()->length(); |
| 0 | 2271 JVM_END |
| 2272 | |
| 2273 | |
| 2274 // The following methods, used for the verifier, are never called with | |
|
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2275 // array klasses, so a direct cast to InstanceKlass is safe. |
| 0 | 2276 // Typically, these methods are called in a loop with bounds determined |
| 2277 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
| 2278 // zero for arrays. | |
| 2279 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
| 2280 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
|
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|
2281 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2282 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2283 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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2284 int length = method->checked_exceptions_length(); |
| 0 | 2285 if (length > 0) { |
|
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|
2286 CheckedExceptionElement* table= method->checked_exceptions_start(); |
| 0 | 2287 for (int i = 0; i < length; i++) { |
| 2288 exceptions[i] = table[i].class_cp_index; | |
| 2289 } | |
| 2290 } | |
| 2291 JVM_END | |
| 2292 | |
| 2293 | |
| 2294 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
| 2295 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
|
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2296 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2297 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2298 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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2299 return method->checked_exceptions_length(); |
| 0 | 2300 JVM_END |
| 2301 | |
| 2302 | |
| 2303 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
| 2304 JVMWrapper("JVM_GetMethodIxByteCode"); | |
|
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2305 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2306 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2307 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2308 memcpy(code, method->code_base(), method->code_size()); |
| 0 | 2309 JVM_END |
| 2310 | |
| 2311 | |
| 2312 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
| 2313 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
|
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2314 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2315 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2316 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2317 return method->code_size(); |
| 0 | 2318 JVM_END |
| 2319 | |
| 2320 | |
| 2321 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
| 2322 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
|
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2323 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2324 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2325 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2326 ExceptionTable extable(method); |
|
6213
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|
2327 entry->start_pc = extable.start_pc(entry_index); |
|
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|
2328 entry->end_pc = extable.end_pc(entry_index); |
|
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|
2329 entry->handler_pc = extable.handler_pc(entry_index); |
|
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|
2330 entry->catchType = extable.catch_type_index(entry_index); |
| 0 | 2331 JVM_END |
| 2332 | |
| 2333 | |
| 2334 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
| 2335 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
|
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|
2336 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2337 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2338 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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2339 return method->exception_table_length(); |
| 0 | 2340 JVM_END |
| 2341 | |
| 2342 | |
| 2343 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
| 2344 JVMWrapper("JVM_GetMethodIxModifiers"); | |
|
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2345 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2346 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2347 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2348 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
| 0 | 2349 JVM_END |
| 2350 | |
| 2351 | |
| 2352 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
| 2353 JVMWrapper("JVM_GetFieldIxModifiers"); | |
|
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|
2354 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2355 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2356 return InstanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
| 0 | 2357 JVM_END |
| 2358 | |
| 2359 | |
| 2360 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
| 2361 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
|
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|
2362 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2363 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2364 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2365 return method->max_locals(); |
| 0 | 2366 JVM_END |
| 2367 | |
| 2368 | |
| 2369 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
| 2370 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
|
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|
2371 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2372 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2373 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2374 return method->size_of_parameters(); |
| 0 | 2375 JVM_END |
| 2376 | |
| 2377 | |
| 2378 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
| 2379 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
|
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|
2380 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2381 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2382 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2383 return method->verifier_max_stack(); |
| 0 | 2384 JVM_END |
| 2385 | |
| 2386 | |
| 2387 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
| 2388 JVMWrapper("JVM_IsConstructorIx"); | |
| 2389 ResourceMark rm(THREAD); | |
|
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|
2390 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2391 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2392 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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2393 return method->name() == vmSymbols::object_initializer_name(); |
| 0 | 2394 JVM_END |
| 2395 | |
| 2396 | |
|
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|
2397 JVM_QUICK_ENTRY(jboolean, JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cls, int method_index)) |
|
815957d0203e
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|
2398 JVMWrapper("JVM_IsVMGeneratedMethodIx"); |
|
815957d0203e
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|
2399 ResourceMark rm(THREAD); |
|
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|
2400 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
|
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|
2401 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2402 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2403 return method->is_overpass(); |
|
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|
2404 JVM_END |
|
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|
2405 |
| 0 | 2406 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) |
| 2407 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
|
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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->name()->as_utf8(); |
| 0 | 2412 JVM_END |
| 2413 | |
| 2414 | |
| 2415 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
| 2416 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
|
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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->signature()->as_utf8(); |
| 0 | 2421 JVM_END |
| 2422 | |
| 2423 /** | |
| 2424 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
| 2425 * read entries in the constant pool. Since the old verifier always | |
| 2426 * works on a copy of the code, it will not see any rewriting that | |
| 2427 * may possibly occur in the middle of verification. So it is important | |
| 2428 * that nothing it calls tries to use the cpCache instead of the raw | |
| 2429 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
| 2430 */ | |
| 2431 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2432 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
|
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2433 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2434 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2435 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2436 switch (cp->tag_at(cp_index).value()) { |
| 2437 case JVM_CONSTANT_Fieldref: | |
| 2438 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
| 2439 default: | |
| 2440 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
| 2441 } | |
| 2442 ShouldNotReachHere(); | |
| 2443 return NULL; | |
| 2444 JVM_END | |
| 2445 | |
| 2446 | |
| 2447 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2448 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
|
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2449 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2450 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2451 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2452 switch (cp->tag_at(cp_index).value()) { |
| 2453 case JVM_CONSTANT_InterfaceMethodref: | |
| 2454 case JVM_CONSTANT_Methodref: | |
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2455 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2456 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
| 2457 default: | |
| 2458 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
| 2459 } | |
| 2460 ShouldNotReachHere(); | |
| 2461 return NULL; | |
| 2462 JVM_END | |
| 2463 | |
| 2464 | |
| 2465 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2466 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
|
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2467 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2468 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2469 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2470 switch (cp->tag_at(cp_index).value()) { |
| 2471 case JVM_CONSTANT_InterfaceMethodref: | |
| 2472 case JVM_CONSTANT_Methodref: | |
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2473 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2474 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
| 2475 default: | |
| 2476 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
| 2477 } | |
| 2478 ShouldNotReachHere(); | |
| 2479 return NULL; | |
| 2480 JVM_END | |
| 2481 | |
| 2482 | |
| 2483 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2484 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
|
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2485 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2486 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2487 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2488 switch (cp->tag_at(cp_index).value()) { |
| 2489 case JVM_CONSTANT_Fieldref: | |
| 2490 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
| 2491 default: | |
| 2492 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
| 2493 } | |
| 2494 ShouldNotReachHere(); | |
| 2495 return NULL; | |
| 2496 JVM_END | |
| 2497 | |
| 2498 | |
| 2499 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2500 JVMWrapper("JVM_GetCPClassNameUTF"); | |
|
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2501 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2502 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2503 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
|
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2504 Symbol* classname = cp->klass_name_at(cp_index); |
| 0 | 2505 return classname->as_utf8(); |
| 2506 JVM_END | |
| 2507 | |
| 2508 | |
| 2509 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2510 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
|
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2511 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2512 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2513 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2514 switch (cp->tag_at(cp_index).value()) { |
| 2515 case JVM_CONSTANT_Fieldref: { | |
| 2516 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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2517 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2518 return classname->as_utf8(); |
| 2519 } | |
| 2520 default: | |
| 2521 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
| 2522 } | |
| 2523 ShouldNotReachHere(); | |
| 2524 return NULL; | |
| 2525 JVM_END | |
| 2526 | |
| 2527 | |
| 2528 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2529 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
|
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2530 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2531 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2532 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2533 switch (cp->tag_at(cp_index).value()) { |
| 2534 case JVM_CONSTANT_Methodref: | |
| 2535 case JVM_CONSTANT_InterfaceMethodref: { | |
| 2536 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
|
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2537 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2538 return classname->as_utf8(); |
| 2539 } | |
| 2540 default: | |
| 2541 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
| 2542 } | |
| 2543 ShouldNotReachHere(); | |
| 2544 return NULL; | |
| 2545 JVM_END | |
| 2546 | |
| 2547 | |
| 3938 | 2548 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
| 0 | 2549 JVMWrapper("JVM_GetCPFieldModifiers"); |
|
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2550 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
|
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|
2551 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
| 0 | 2552 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 2553 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
|
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|
2554 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
|
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|
2555 ConstantPool* cp_called = InstanceKlass::cast(k_called)->constants(); |
| 0 | 2556 switch (cp->tag_at(cp_index).value()) { |
| 2557 case JVM_CONSTANT_Fieldref: { | |
|
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2558 Symbol* name = cp->uncached_name_ref_at(cp_index); |
|
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|
2559 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
| 3938 | 2560 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
| 2561 if (fs.name() == name && fs.signature() == signature) { | |
| 2562 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
| 0 | 2563 } |
| 2564 } | |
| 2565 return -1; | |
| 2566 } | |
| 2567 default: | |
| 2568 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
| 2569 } | |
| 2570 ShouldNotReachHere(); | |
| 2571 return 0; | |
| 2572 JVM_END | |
| 2573 | |
| 2574 | |
| 2575 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
| 2576 JVMWrapper("JVM_GetCPMethodModifiers"); | |
|
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2577 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
|
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|
2578 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
| 0 | 2579 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 2580 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
|
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|
2581 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2582 switch (cp->tag_at(cp_index).value()) { |
| 2583 case JVM_CONSTANT_Methodref: | |
| 2584 case JVM_CONSTANT_InterfaceMethodref: { | |
|
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2585 Symbol* name = cp->uncached_name_ref_at(cp_index); |
|
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|
2586 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
|
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|
2587 Array<Method*>* methods = InstanceKlass::cast(k_called)->methods(); |
| 0 | 2588 int methods_count = methods->length(); |
| 2589 for (int i = 0; i < methods_count; i++) { | |
|
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|
2590 Method* method = methods->at(i); |
| 0 | 2591 if (method->name() == name && method->signature() == signature) { |
| 2592 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 2593 } | |
| 2594 } | |
| 2595 return -1; | |
| 2596 } | |
| 2597 default: | |
| 2598 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
| 2599 } | |
| 2600 ShouldNotReachHere(); | |
| 2601 return 0; | |
| 2602 JVM_END | |
| 2603 | |
| 2604 | |
| 2605 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
| 2606 | |
| 2607 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
| 2608 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
| 2609 JVM_END | |
| 2610 | |
| 2611 | |
| 2612 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
| 2613 JVMWrapper("JVM_IsSameClassPackage"); | |
| 2614 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
| 2615 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
|
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|
2616 Klass* klass1 = java_lang_Class::as_Klass(class1_mirror); |
|
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|
2617 Klass* klass2 = java_lang_Class::as_Klass(class2_mirror); |
| 0 | 2618 return (jboolean) Reflection::is_same_class_package(klass1, klass2); |
| 2619 JVM_END | |
| 2620 | |
| 2621 | |
| 2622 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
| 2623 | |
| 2624 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
| 2625 JVMWrapper2("JVM_Open (%s)", fname); | |
| 2626 | |
| 2627 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
2628 int result = os::open(fname, flags, mode); |
| 0 | 2629 if (result >= 0) { |
| 2630 return result; | |
| 2631 } else { | |
| 2632 switch(errno) { | |
| 2633 case EEXIST: | |
| 2634 return JVM_EEXIST; | |
| 2635 default: | |
| 2636 return -1; | |
| 2637 } | |
| 2638 } | |
| 2639 JVM_END | |
| 2640 | |
| 2641 | |
| 2642 JVM_LEAF(jint, JVM_Close(jint fd)) | |
| 2643 JVMWrapper2("JVM_Close (0x%x)", fd); | |
| 2644 //%note jvm_r6 | |
|
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6348631: remove the use of the HPI library from Hotspot
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diff
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|
2645 return os::close(fd); |
| 0 | 2646 JVM_END |
| 2647 | |
| 2648 | |
| 2649 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
| 2650 JVMWrapper2("JVM_Read (0x%x)", fd); | |
| 2651 | |
| 2652 //%note jvm_r6 | |
|
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828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
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|
2653 return (jint)os::restartable_read(fd, buf, nbytes); |
| 0 | 2654 JVM_END |
| 2655 | |
| 2656 | |
| 2657 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
| 2658 JVMWrapper2("JVM_Write (0x%x)", fd); | |
| 2659 | |
| 2660 //%note jvm_r6 | |
|
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828eafbd85cc
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diff
changeset
|
2661 return (jint)os::write(fd, buf, nbytes); |
| 0 | 2662 JVM_END |
| 2663 | |
| 2664 | |
| 2665 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
| 2666 JVMWrapper2("JVM_Available (0x%x)", fd); | |
| 2667 //%note jvm_r6 | |
|
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828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
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|
2668 return os::available(fd, pbytes); |
| 0 | 2669 JVM_END |
| 2670 | |
| 2671 | |
| 2672 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
| 2673 JVMWrapper4("JVM_Lseek (0x%x, %Ld, %d)", fd, offset, whence); | |
| 2674 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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diff
changeset
|
2675 return os::lseek(fd, offset, whence); |
| 0 | 2676 JVM_END |
| 2677 | |
| 2678 | |
| 2679 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
| 2680 JVMWrapper3("JVM_SetLength (0x%x, %Ld)", fd, length); | |
|
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6348631: remove the use of the HPI library from Hotspot
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diff
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|
2681 return os::ftruncate(fd, length); |
| 0 | 2682 JVM_END |
| 2683 | |
| 2684 | |
| 2685 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
| 2686 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
| 2687 //%note jvm_r6 | |
|
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|
2688 return os::fsync(fd); |
| 0 | 2689 JVM_END |
| 2690 | |
| 2691 | |
| 2692 // Printing support ////////////////////////////////////////////////// | |
| 2693 extern "C" { | |
| 2694 | |
| 2695 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { | |
| 2696 // see bug 4399518, 4417214 | |
| 2697 if ((intptr_t)count <= 0) return -1; | |
| 2698 return vsnprintf(str, count, fmt, args); | |
| 2699 } | |
| 2700 | |
| 2701 | |
| 2702 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { | |
| 2703 va_list args; | |
| 2704 int len; | |
| 2705 va_start(args, fmt); | |
| 2706 len = jio_vsnprintf(str, count, fmt, args); | |
| 2707 va_end(args); | |
| 2708 return len; | |
| 2709 } | |
| 2710 | |
| 2711 | |
| 2712 int jio_fprintf(FILE* f, const char *fmt, ...) { | |
| 2713 int len; | |
| 2714 va_list args; | |
| 2715 va_start(args, fmt); | |
| 2716 len = jio_vfprintf(f, fmt, args); | |
| 2717 va_end(args); | |
| 2718 return len; | |
| 2719 } | |
| 2720 | |
| 2721 | |
| 2722 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { | |
| 2723 if (Arguments::vfprintf_hook() != NULL) { | |
| 2724 return Arguments::vfprintf_hook()(f, fmt, args); | |
| 2725 } else { | |
| 2726 return vfprintf(f, fmt, args); | |
| 2727 } | |
| 2728 } | |
| 2729 | |
| 2730 | |
| 2191 | 2731 JNIEXPORT int jio_printf(const char *fmt, ...) { |
| 0 | 2732 int len; |
| 2733 va_list args; | |
| 2734 va_start(args, fmt); | |
| 2735 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
| 2736 va_end(args); | |
| 2737 return len; | |
| 2738 } | |
| 2739 | |
| 2740 | |
| 2741 // HotSpot specific jio method | |
| 2742 void jio_print(const char* s) { | |
| 2743 // Try to make this function as atomic as possible. | |
| 2744 if (Arguments::vfprintf_hook() != NULL) { | |
| 2745 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
| 2746 } else { | |
|
513
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|
2747 // Make an unused local variable to avoid warning from gcc 4.x compiler. |
|
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|
2748 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
| 0 | 2749 } |
| 2750 } | |
| 2751 | |
| 2752 } // Extern C | |
| 2753 | |
| 2754 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
| 2755 | |
| 2756 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
| 2757 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
| 2758 // OSThread objects. The exception to this rule is when the target object is the thread | |
| 2759 // doing the operation, in which case we know that the thread won't exit until the | |
| 2760 // operation is done (all exits being voluntary). There are a few cases where it is | |
| 2761 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
| 2762 // you are alive. While these can still happen, they are not subject to deadlocks if | |
| 2763 // the lock is held while the operation occurs (this is not the case for suspend, for | |
| 2764 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
| 2765 // implementation is local to this file, we always lock Threads_lock for that one. | |
| 2766 | |
| 2767 static void thread_entry(JavaThread* thread, TRAPS) { | |
| 2768 HandleMark hm(THREAD); | |
| 2769 Handle obj(THREAD, thread->threadObj()); | |
| 2770 JavaValue result(T_VOID); | |
| 2771 JavaCalls::call_virtual(&result, | |
| 2772 obj, | |
| 1142 | 2773 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
|
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|
2774 vmSymbols::run_method_name(), |
|
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|
2775 vmSymbols::void_method_signature(), |
| 0 | 2776 THREAD); |
| 2777 } | |
| 2778 | |
| 2779 | |
| 2780 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
| 2781 JVMWrapper("JVM_StartThread"); | |
| 2782 JavaThread *native_thread = NULL; | |
| 2783 | |
| 2784 // We cannot hold the Threads_lock when we throw an exception, | |
| 2785 // due to rank ordering issues. Example: we might need to grab the | |
| 2786 // Heap_lock while we construct the exception. | |
| 2787 bool throw_illegal_thread_state = false; | |
| 2788 | |
| 2789 // We must release the Threads_lock before we can post a jvmti event | |
| 2790 // in Thread::start. | |
| 2791 { | |
| 2792 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
| 2793 // we operate. | |
| 2794 MutexLocker mu(Threads_lock); | |
| 2795 | |
|
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diff
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|
2796 // Since JDK 5 the java.lang.Thread threadStatus is used to prevent |
|
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|
2797 // re-starting an already started thread, so we should usually find |
|
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|
2798 // that the JavaThread is null. However for a JNI attached thread |
|
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|
2799 // there is a small window between the Thread object being created |
|
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|
2800 // (with its JavaThread set) and the update to its threadStatus, so we |
|
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|
2801 // have to check for this |
|
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|
2802 if (java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)) != NULL) { |
|
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|
2803 throw_illegal_thread_state = true; |
| 0 | 2804 } else { |
|
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2805 // We could also check the stillborn flag to see if this thread was already stopped, but |
|
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diff
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|
2806 // for historical reasons we let the thread detect that itself when it starts running |
|
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diff
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|
2807 |
| 0 | 2808 jlong size = |
| 2809 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
| 2810 // Allocate the C++ Thread structure and create the native thread. The | |
| 2811 // stack size retrieved from java is signed, but the constructor takes | |
| 2812 // size_t (an unsigned type), so avoid passing negative values which would | |
| 2813 // result in really large stacks. | |
| 2814 size_t sz = size > 0 ? (size_t) size : 0; | |
| 2815 native_thread = new JavaThread(&thread_entry, sz); | |
| 2816 | |
| 2817 // At this point it may be possible that no osthread was created for the | |
| 2818 // JavaThread due to lack of memory. Check for this situation and throw | |
| 2819 // an exception if necessary. Eventually we may want to change this so | |
| 2820 // that we only grab the lock if the thread was created successfully - | |
| 2821 // then we can also do this check and throw the exception in the | |
| 2822 // JavaThread constructor. | |
| 2823 if (native_thread->osthread() != NULL) { | |
| 2824 // Note: the current thread is not being used within "prepare". | |
| 2825 native_thread->prepare(jthread); | |
| 2826 } | |
| 2827 } | |
| 2828 } | |
| 2829 | |
| 2830 if (throw_illegal_thread_state) { | |
| 2831 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
| 2832 } | |
| 2833 | |
| 2834 assert(native_thread != NULL, "Starting null thread?"); | |
| 2835 | |
| 2836 if (native_thread->osthread() == NULL) { | |
| 2837 // No one should hold a reference to the 'native_thread'. | |
| 2838 delete native_thread; | |
| 2839 if (JvmtiExport::should_post_resource_exhausted()) { | |
| 2840 JvmtiExport::post_resource_exhausted( | |
| 2841 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
| 2842 "unable to create new native thread"); | |
| 2843 } | |
| 2844 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
| 2845 "unable to create new native thread"); | |
| 2846 } | |
| 2847 | |
| 2848 Thread::start(native_thread); | |
| 2849 | |
| 2850 JVM_END | |
| 2851 | |
| 2852 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
| 2853 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
| 2854 // but is thought to be reliable and simple. In the case, where the receiver is the | |
|
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diff
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|
2855 // same thread as the sender, no safepoint is needed. |
| 0 | 2856 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
| 2857 JVMWrapper("JVM_StopThread"); | |
| 2858 | |
| 2859 oop java_throwable = JNIHandles::resolve(throwable); | |
| 2860 if (java_throwable == NULL) { | |
| 2861 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 2862 } | |
| 2863 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2864 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
|
4872
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
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4717
diff
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|
2865 Events::log_exception(JavaThread::current(), |
|
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parents:
4717
diff
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|
2866 "JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", |
|
aa3d708d67c4
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diff
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|
2867 receiver, (address)java_thread, throwable); |
|
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diff
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|
2868 // First check if thread is alive |
| 0 | 2869 if (receiver != NULL) { |
| 2870 // Check if exception is getting thrown at self (use oop equality, since the | |
| 2871 // target object might exit) | |
| 2872 if (java_thread == thread->threadObj()) { | |
| 2873 THROW_OOP(java_throwable); | |
| 2874 } else { | |
| 2875 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
| 2876 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
| 2877 } | |
| 2878 } | |
|
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diff
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|
2879 else { |
|
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diff
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|
2880 // Either: |
|
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diff
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|
2881 // - target thread has not been started before being stopped, or |
|
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diff
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|
2882 // - target thread already terminated |
|
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dholmes
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diff
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|
2883 // We could read the threadStatus to determine which case it is |
|
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
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diff
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|
2884 // but that is overkill as it doesn't matter. We must set the |
|
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diff
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|
2885 // stillborn flag for the first case, and if the thread has already |
|
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diff
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|
2886 // exited setting this flag has no affect |
|
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dholmes
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diff
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|
2887 java_lang_Thread::set_stillborn(java_thread); |
|
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diff
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|
2888 } |
| 0 | 2889 JVM_END |
| 2890 | |
| 2891 | |
| 2892 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
| 2893 JVMWrapper("JVM_IsThreadAlive"); | |
| 2894 | |
| 2895 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
| 2896 return java_lang_Thread::is_alive(thread_oop); | |
| 2897 JVM_END | |
| 2898 | |
| 2899 | |
| 2900 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
| 2901 JVMWrapper("JVM_SuspendThread"); | |
| 2902 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2903 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
| 2904 | |
| 2905 if (receiver != NULL) { | |
| 2906 // thread has run and has not exited (still on threads list) | |
| 2907 | |
| 2908 { | |
| 2909 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
| 2910 if (receiver->is_external_suspend()) { | |
| 2911 // Don't allow nested external suspend requests. We can't return | |
| 2912 // an error from this interface so just ignore the problem. | |
| 2913 return; | |
| 2914 } | |
| 2915 if (receiver->is_exiting()) { // thread is in the process of exiting | |
| 2916 return; | |
| 2917 } | |
| 2918 receiver->set_external_suspend(); | |
| 2919 } | |
| 2920 | |
| 2921 // java_suspend() will catch threads in the process of exiting | |
| 2922 // and will ignore them. | |
| 2923 receiver->java_suspend(); | |
| 2924 | |
| 2925 // It would be nice to have the following assertion in all the | |
| 2926 // time, but it is possible for a racing resume request to have | |
| 2927 // resumed this thread right after we suspended it. Temporarily | |
| 2928 // enable this assertion if you are chasing a different kind of | |
| 2929 // bug. | |
| 2930 // | |
| 2931 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
| 2932 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
| 2933 } | |
| 2934 JVM_END | |
| 2935 | |
| 2936 | |
| 2937 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
| 2938 JVMWrapper("JVM_ResumeThread"); | |
| 2939 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
| 2940 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
| 2941 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
| 2942 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
| 2943 // looks at it. | |
| 2944 MutexLocker ml(Threads_lock); | |
| 2945 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 2946 if (thr != NULL) { | |
| 2947 // the thread has run and is not in the process of exiting | |
| 2948 thr->java_resume(); | |
| 2949 } | |
| 2950 JVM_END | |
| 2951 | |
| 2952 | |
| 2953 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
| 2954 JVMWrapper("JVM_SetThreadPriority"); | |
| 2955 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 2956 MutexLocker ml(Threads_lock); | |
| 2957 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2958 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
| 2959 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 2960 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
| 2961 Thread::set_priority(thr, (ThreadPriority)prio); | |
| 2962 } | |
| 2963 JVM_END | |
| 2964 | |
| 2965 | |
| 2966 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
| 2967 JVMWrapper("JVM_Yield"); | |
| 2968 if (os::dont_yield()) return; | |
| 4006 | 2969 #ifndef USDT2 |
|
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1144
diff
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|
2970 HS_DTRACE_PROBE0(hotspot, thread__yield); |
| 4006 | 2971 #else /* USDT2 */ |
| 2972 HOTSPOT_THREAD_YIELD(); | |
| 2973 #endif /* USDT2 */ | |
| 0 | 2974 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
| 2975 // Critical for similar threading behaviour | |
| 2976 if (ConvertYieldToSleep) { | |
| 2977 os::sleep(thread, MinSleepInterval, false); | |
| 2978 } else { | |
| 2979 os::yield(); | |
| 2980 } | |
| 2981 JVM_END | |
| 2982 | |
| 2983 | |
| 2984 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
| 2985 JVMWrapper("JVM_Sleep"); | |
| 2986 | |
| 2987 if (millis < 0) { | |
| 2988 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
| 2989 } | |
| 2990 | |
| 2991 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
| 2992 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 2993 } | |
| 2994 | |
| 2995 // Save current thread state and restore it at the end of this block. | |
| 2996 // And set new thread state to SLEEPING. | |
| 2997 JavaThreadSleepState jtss(thread); | |
| 2998 | |
| 4006 | 2999 #ifndef USDT2 |
|
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1144
diff
changeset
|
3000 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); |
| 4006 | 3001 #else /* USDT2 */ |
| 3002 HOTSPOT_THREAD_SLEEP_BEGIN( | |
| 3003 millis); | |
| 3004 #endif /* USDT2 */ | |
|
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1144
diff
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|
3005 |
| 0 | 3006 if (millis == 0) { |
| 3007 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
| 3008 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
| 3009 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
| 3010 // for SOLARIS | |
| 3011 if (ConvertSleepToYield) { | |
| 3012 os::yield(); | |
| 3013 } else { | |
| 3014 ThreadState old_state = thread->osthread()->get_state(); | |
| 3015 thread->osthread()->set_state(SLEEPING); | |
| 3016 os::sleep(thread, MinSleepInterval, false); | |
| 3017 thread->osthread()->set_state(old_state); | |
| 3018 } | |
| 3019 } else { | |
| 3020 ThreadState old_state = thread->osthread()->get_state(); | |
| 3021 thread->osthread()->set_state(SLEEPING); | |
| 3022 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
| 3023 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
| 3024 // us while we were sleeping. We do not overwrite those. | |
| 3025 if (!HAS_PENDING_EXCEPTION) { | |
| 4006 | 3026 #ifndef USDT2 |
|
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1144
diff
changeset
|
3027 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); |
| 4006 | 3028 #else /* USDT2 */ |
| 3029 HOTSPOT_THREAD_SLEEP_END( | |
| 3030 1); | |
| 3031 #endif /* USDT2 */ | |
| 0 | 3032 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
| 3033 // to properly restore the thread state. That's likely wrong. | |
| 3034 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 3035 } | |
| 3036 } | |
| 3037 thread->osthread()->set_state(old_state); | |
| 3038 } | |
| 4006 | 3039 #ifndef USDT2 |
|
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1144
diff
changeset
|
3040 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); |
| 4006 | 3041 #else /* USDT2 */ |
| 3042 HOTSPOT_THREAD_SLEEP_END( | |
| 3043 0); | |
| 3044 #endif /* USDT2 */ | |
| 0 | 3045 JVM_END |
| 3046 | |
| 3047 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
| 3048 JVMWrapper("JVM_CurrentThread"); | |
| 3049 oop jthread = thread->threadObj(); | |
| 3050 assert (thread != NULL, "no current thread!"); | |
| 3051 return JNIHandles::make_local(env, jthread); | |
| 3052 JVM_END | |
| 3053 | |
| 3054 | |
| 3055 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
| 3056 JVMWrapper("JVM_CountStackFrames"); | |
| 3057 | |
| 3058 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3059 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3060 bool throw_illegal_thread_state = false; | |
| 3061 int count = 0; | |
| 3062 | |
| 3063 { | |
| 3064 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 3065 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 3066 // acquire of the lock | |
| 3067 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3068 | |
| 3069 if (thr == NULL) { | |
| 3070 // do nothing | |
| 3071 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
| 3072 // Check whether this java thread has been suspended already. If not, throws | |
| 3073 // IllegalThreadStateException. We defer to throw that exception until | |
| 3074 // Threads_lock is released since loading exception class has to leave VM. | |
| 3075 // The correct way to test a thread is actually suspended is | |
| 3076 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
| 3077 // the Threads_lock. The above tests are sufficient for our purposes | |
| 3078 // provided the walkability of the stack is stable - which it isn't | |
| 3079 // 100% but close enough for most practical purposes. | |
| 3080 throw_illegal_thread_state = true; | |
| 3081 } else { | |
| 3082 // Count all java activation, i.e., number of vframes | |
| 3083 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
| 3084 // Native frames are not counted | |
| 3085 if (!vfst.method()->is_native()) count++; | |
| 3086 } | |
| 3087 } | |
| 3088 } | |
| 3089 | |
| 3090 if (throw_illegal_thread_state) { | |
| 3091 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
| 3092 "this thread is not suspended"); | |
| 3093 } | |
| 3094 return count; | |
| 3095 JVM_END | |
| 3096 | |
| 3097 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
| 3098 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
| 3099 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
| 3100 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
| 3101 // outside the critical section. Threads_lock is hot so we want to minimize | |
| 3102 // the hold-time. A cleaner interface would be to decompose interrupt into | |
| 3103 // two steps. The 1st phase, performed under Threads_lock, would return | |
| 3104 // a closure that'd be invoked after Threads_lock was dropped. | |
| 3105 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
| 3106 // admit spurious wakeups. | |
| 3107 | |
| 3108 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
| 3109 JVMWrapper("JVM_Interrupt"); | |
| 3110 | |
| 3111 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3112 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3113 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 3114 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 3115 // acquire of the lock | |
| 3116 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3117 if (thr != NULL) { | |
| 3118 Thread::interrupt(thr); | |
| 3119 } | |
| 3120 JVM_END | |
| 3121 | |
| 3122 | |
| 3123 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
| 3124 JVMWrapper("JVM_IsInterrupted"); | |
| 3125 | |
| 3126 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3127 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3128 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 3129 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 3130 // acquire of the lock | |
| 3131 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3132 if (thr == NULL) { | |
| 3133 return JNI_FALSE; | |
| 3134 } else { | |
| 3135 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
| 3136 } | |
| 3137 JVM_END | |
| 3138 | |
| 3139 | |
| 3140 // Return true iff the current thread has locked the object passed in | |
| 3141 | |
| 3142 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
| 3143 JVMWrapper("JVM_HoldsLock"); | |
| 3144 assert(THREAD->is_Java_thread(), "sanity check"); | |
| 3145 if (obj == NULL) { | |
| 3146 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
| 3147 } | |
| 3148 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
| 3149 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
| 3150 JVM_END | |
| 3151 | |
| 3152 | |
| 3153 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
| 3154 JVMWrapper("JVM_DumpAllStacks"); | |
| 3155 VM_PrintThreads op; | |
| 3156 VMThread::execute(&op); | |
| 3157 if (JvmtiExport::should_post_data_dump()) { | |
| 3158 JvmtiExport::post_data_dump(); | |
| 3159 } | |
| 3160 JVM_END | |
| 3161 | |
| 4006 | 3162 JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name)) |
| 3163 JVMWrapper("JVM_SetNativeThreadName"); | |
| 3164 ResourceMark rm(THREAD); | |
| 3165 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3166 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 3167 // Thread naming only supported for the current thread, doesn't work for | |
| 3168 // target threads. | |
| 3169 if (Thread::current() == thr && !thr->has_attached_via_jni()) { | |
| 3170 // we don't set the name of an attached thread to avoid stepping | |
| 3171 // on other programs | |
| 3172 const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
| 3173 os::set_native_thread_name(thread_name); | |
| 3174 } | |
| 3175 JVM_END | |
| 0 | 3176 |
| 3177 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
| 3178 | |
| 3179 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
| 3180 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
| 3181 if (jthread->privileged_stack_top() == NULL) return false; | |
| 3182 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
| 3183 oop loader = jthread->privileged_stack_top()->class_loader(); | |
| 3184 if (loader == NULL) return true; | |
| 3185 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
| 3186 if (trusted) return true; | |
| 3187 } | |
| 3188 return false; | |
| 3189 } | |
| 3190 | |
| 3191 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
| 3192 JVMWrapper("JVM_CurrentLoadedClass"); | |
| 3193 ResourceMark rm(THREAD); | |
| 3194 | |
| 3195 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3196 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3197 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3198 if (trusted) return NULL; | |
| 3199 | |
|
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3200 Method* m = vfst.method(); |
| 0 | 3201 if (!m->is_native()) { |
|
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|
3202 InstanceKlass* holder = m->method_holder(); |
|
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|
3203 oop loader = holder->class_loader(); |
| 0 | 3204 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
|
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|
3205 return (jclass) JNIHandles::make_local(env, holder->java_mirror()); |
| 0 | 3206 } |
| 3207 } | |
| 3208 } | |
| 3209 return NULL; | |
| 3210 JVM_END | |
| 3211 | |
| 3212 | |
| 3213 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
| 3214 JVMWrapper("JVM_CurrentClassLoader"); | |
| 3215 ResourceMark rm(THREAD); | |
| 3216 | |
| 3217 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3218 | |
| 3219 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3220 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3221 if (trusted) return NULL; | |
| 3222 | |
|
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3223 Method* m = vfst.method(); |
| 0 | 3224 if (!m->is_native()) { |
|
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|
3225 InstanceKlass* holder = m->method_holder(); |
| 0 | 3226 assert(holder->is_klass(), "just checking"); |
|
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3227 oop loader = holder->class_loader(); |
| 0 | 3228 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
| 3229 return JNIHandles::make_local(env, loader); | |
| 3230 } | |
| 3231 } | |
| 3232 } | |
| 3233 return NULL; | |
| 3234 JVM_END | |
| 3235 | |
| 3236 | |
| 3237 // Utility object for collecting method holders walking down the stack | |
| 3238 class KlassLink: public ResourceObj { | |
| 3239 public: | |
| 3240 KlassHandle klass; | |
| 3241 KlassLink* next; | |
| 3242 | |
| 3243 KlassLink(KlassHandle k) { klass = k; next = NULL; } | |
| 3244 }; | |
| 3245 | |
| 3246 | |
| 3247 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
| 3248 JVMWrapper("JVM_GetClassContext"); | |
| 3249 ResourceMark rm(THREAD); | |
| 3250 JvmtiVMObjectAllocEventCollector oam; | |
| 3251 // Collect linked list of (handles to) method holders | |
| 3252 KlassLink* first = NULL; | |
| 3253 KlassLink* last = NULL; | |
| 3254 int depth = 0; | |
|
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3255 vframeStream vfst(thread); |
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3256 |
|
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3257 if (SystemDictionary::reflect_CallerSensitive_klass() != NULL) { |
|
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3258 // This must only be called from SecurityManager.getClassContext |
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|
3259 Method* m = vfst.method(); |
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3260 if (!(m->method_holder() == SystemDictionary::SecurityManager_klass() && |
|
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|
3261 m->name() == vmSymbols::getClassContext_name() && |
|
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|
3262 m->signature() == vmSymbols::void_class_array_signature())) { |
|
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|
3263 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetClassContext must only be called from SecurityManager.getClassContext"); |
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|
3264 } |
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|
3265 } |
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|
3266 |
|
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|
3267 // Collect method holders |
|
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|
3268 for (; !vfst.at_end(); vfst.security_next()) { |
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|
3269 Method* m = vfst.method(); |
| 0 | 3270 // Native frames are not returned |
|
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|
3271 if (!m->is_ignored_by_security_stack_walk() && !m->is_native()) { |
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|
3272 Klass* holder = m->method_holder(); |
| 0 | 3273 assert(holder->is_klass(), "just checking"); |
| 3274 depth++; | |
| 3275 KlassLink* l = new KlassLink(KlassHandle(thread, holder)); | |
| 3276 if (first == NULL) { | |
| 3277 first = last = l; | |
| 3278 } else { | |
| 3279 last->next = l; | |
| 3280 last = l; | |
| 3281 } | |
| 3282 } | |
| 3283 } | |
| 3284 | |
| 3285 // Create result array of type [Ljava/lang/Class; | |
| 1142 | 3286 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), depth, CHECK_NULL); |
| 0 | 3287 // Fill in mirrors corresponding to method holders |
| 3288 int index = 0; | |
| 3289 while (first != NULL) { | |
| 6983 | 3290 result->obj_at_put(index++, first->klass()->java_mirror()); |
| 0 | 3291 first = first->next; |
| 3292 } | |
| 3293 assert(index == depth, "just checking"); | |
| 3294 | |
| 3295 return (jobjectArray) JNIHandles::make_local(env, result); | |
| 3296 JVM_END | |
| 3297 | |
| 3298 | |
| 3299 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
| 3300 JVMWrapper("JVM_ClassDepth"); | |
| 3301 ResourceMark rm(THREAD); | |
| 3302 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 3303 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
| 3304 | |
| 3305 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
|
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|
3306 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
|
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|
3307 if (class_name_sym == NULL) { |
| 0 | 3308 return -1; |
| 3309 } | |
| 3310 | |
| 3311 int depth = 0; | |
| 3312 | |
| 3313 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3314 if (!vfst.method()->is_native()) { | |
|
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|
3315 InstanceKlass* holder = vfst.method()->method_holder(); |
| 0 | 3316 assert(holder->is_klass(), "just checking"); |
|
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|
3317 if (holder->name() == class_name_sym) { |
| 0 | 3318 return depth; |
| 3319 } | |
| 3320 depth++; | |
| 3321 } | |
| 3322 } | |
| 3323 return -1; | |
| 3324 JVM_END | |
| 3325 | |
| 3326 | |
| 3327 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
| 3328 JVMWrapper("JVM_ClassLoaderDepth"); | |
| 3329 ResourceMark rm(THREAD); | |
| 3330 int depth = 0; | |
| 3331 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3332 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
| 3333 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3334 if (trusted) return -1; | |
| 3335 | |
|
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|
3336 Method* m = vfst.method(); |
| 0 | 3337 if (!m->is_native()) { |
|
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|
3338 InstanceKlass* holder = m->method_holder(); |
| 0 | 3339 assert(holder->is_klass(), "just checking"); |
|
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|
3340 oop loader = holder->class_loader(); |
| 0 | 3341 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
| 3342 return depth; | |
| 3343 } | |
| 3344 depth++; | |
| 3345 } | |
| 3346 } | |
| 3347 return -1; | |
| 3348 JVM_END | |
| 3349 | |
| 3350 | |
| 3351 // java.lang.Package //////////////////////////////////////////////////////////////// | |
| 3352 | |
| 3353 | |
| 3354 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
| 3355 JVMWrapper("JVM_GetSystemPackage"); | |
| 3356 ResourceMark rm(THREAD); | |
| 3357 JvmtiVMObjectAllocEventCollector oam; | |
| 3358 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
| 3359 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
| 3360 return (jstring) JNIHandles::make_local(result); | |
| 3361 JVM_END | |
| 3362 | |
| 3363 | |
| 3364 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
| 3365 JVMWrapper("JVM_GetSystemPackages"); | |
| 3366 JvmtiVMObjectAllocEventCollector oam; | |
| 3367 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
| 3368 return (jobjectArray) JNIHandles::make_local(result); | |
| 3369 JVM_END | |
| 3370 | |
| 3371 | |
| 3372 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
| 3373 | |
|
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3374 bool force_verify_field_access(Klass* current_class, Klass* field_class, AccessFlags access, bool classloader_only) { |
| 0 | 3375 if (current_class == NULL) { |
| 3376 return true; | |
| 3377 } | |
| 3378 if ((current_class == field_class) || access.is_public()) { | |
| 3379 return true; | |
| 3380 } | |
| 3381 | |
| 3382 if (access.is_protected()) { | |
| 3383 // See if current_class is a subclass of field_class | |
| 6983 | 3384 if (current_class->is_subclass_of(field_class)) { |
| 0 | 3385 return true; |
| 3386 } | |
| 3387 } | |
| 3388 | |
|
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|
3389 return (!access.is_private() && InstanceKlass::cast(current_class)->is_same_class_package(field_class)); |
| 0 | 3390 } |
| 3391 | |
| 3392 | |
| 3393 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
| 3394 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
| 3395 JVMWrapper("JVM_AllocateNewObject"); | |
| 3396 JvmtiVMObjectAllocEventCollector oam; | |
| 3397 // Receiver is not used | |
| 3398 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
| 3399 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
| 3400 | |
| 3401 // Cannot instantiate primitive types | |
| 3402 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
| 3403 ResourceMark rm(THREAD); | |
| 3404 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3405 } | |
| 3406 | |
| 3407 // Arrays not allowed here, must use JVM_AllocateNewArray | |
| 6983 | 3408 if (java_lang_Class::as_Klass(curr_mirror)->oop_is_array() || |
| 3409 java_lang_Class::as_Klass(init_mirror)->oop_is_array()) { | |
| 0 | 3410 ResourceMark rm(THREAD); |
| 3411 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3412 } | |
| 3413 | |
|
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|
3414 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_Klass(curr_mirror)); |
|
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|
3415 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_Klass(init_mirror)); |
| 0 | 3416 |
| 3417 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
| 3418 | |
| 3419 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
| 3420 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
| 3421 | |
| 3422 // Make sure klass is initialized, since we are about to instantiate one of them. | |
| 3423 curr_klass->initialize(CHECK_NULL); | |
| 3424 | |
| 3425 methodHandle m (THREAD, | |
| 3426 init_klass->find_method(vmSymbols::object_initializer_name(), | |
| 3427 vmSymbols::void_method_signature())); | |
| 3428 if (m.is_null()) { | |
| 3429 ResourceMark rm(THREAD); | |
| 3430 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
| 6983 | 3431 Method::name_and_sig_as_C_string(init_klass(), |
| 0 | 3432 vmSymbols::object_initializer_name(), |
| 3433 vmSymbols::void_method_signature())); | |
| 3434 } | |
| 3435 | |
| 3436 if (curr_klass == init_klass && !m->is_public()) { | |
| 3437 // Calling the constructor for class 'curr_klass'. | |
| 3438 // Only allow calls to a public no-arg constructor. | |
| 3439 // This path corresponds to creating an Externalizable object. | |
| 3440 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3441 } | |
| 3442 | |
| 3443 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
| 3444 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
| 3445 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3446 } | |
| 3447 | |
| 3448 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
| 3449 // Call constructor m. This might call a constructor higher up in the hierachy | |
| 3450 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
| 3451 | |
| 3452 return JNIHandles::make_local(obj()); | |
| 3453 JVM_END | |
| 3454 | |
| 3455 | |
| 3456 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
| 3457 JVMWrapper("JVM_AllocateNewArray"); | |
| 3458 JvmtiVMObjectAllocEventCollector oam; | |
| 3459 oop mirror = JNIHandles::resolve_non_null(currClass); | |
| 3460 | |
| 3461 if (java_lang_Class::is_primitive(mirror)) { | |
| 3462 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3463 } | |
|
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|
3464 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 3465 oop result; |
| 3466 | |
|
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|
3467 if (k->oop_is_typeArray()) { |
| 0 | 3468 // typeArray |
|
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diff
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|
3469 result = TypeArrayKlass::cast(k)->allocate(length, CHECK_NULL); |
|
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|
3470 } else if (k->oop_is_objArray()) { |
| 0 | 3471 // objArray |
|
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|
3472 ObjArrayKlass* oak = ObjArrayKlass::cast(k); |
| 0 | 3473 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) |
| 3474 result = oak->allocate(length, CHECK_NULL); | |
| 3475 } else { | |
| 3476 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3477 } | |
| 3478 return JNIHandles::make_local(env, result); | |
| 3479 JVM_END | |
| 3480 | |
| 3481 | |
| 3482 // Return the first non-null class loader up the execution stack, or null | |
| 3483 // if only code from the null class loader is on the stack. | |
| 3484 | |
| 3485 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
| 3486 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3487 // UseNewReflection | |
| 3488 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
|
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3489 oop loader = vfst.method()->method_holder()->class_loader(); |
| 0 | 3490 if (loader != NULL) { |
| 3491 return JNIHandles::make_local(env, loader); | |
| 3492 } | |
| 3493 } | |
| 3494 return NULL; | |
| 3495 JVM_END | |
| 3496 | |
| 3497 | |
| 3498 // Load a class relative to the most recent class on the stack with a non-null | |
| 3499 // classloader. | |
| 3500 // This function has been deprecated and should not be considered part of the | |
| 3501 // specified JVM interface. | |
| 3502 | |
| 3503 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
| 3504 jclass currClass, jstring currClassName)) | |
| 3505 JVMWrapper("JVM_LoadClass0"); | |
| 3506 // Receiver is not used | |
| 3507 ResourceMark rm(THREAD); | |
| 3508 | |
| 3509 // Class name argument is not guaranteed to be in internal format | |
| 3510 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
| 3511 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
| 3512 | |
| 3513 const char* str = java_lang_String::as_utf8_string(string()); | |
| 3514 | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
3515 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
| 0 | 3516 // It's impossible to create this class; the name cannot fit |
| 3517 // into the constant pool. | |
| 3518 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
| 3519 } | |
| 3520 | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
3521 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
| 0 | 3522 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
| 3523 // Find the most recent class on the stack with a non-null classloader | |
| 3524 oop loader = NULL; | |
| 3525 oop protection_domain = NULL; | |
| 3526 if (curr_klass.is_null()) { | |
| 3527 for (vframeStream vfst(thread); | |
| 3528 !vfst.at_end() && loader == NULL; | |
| 3529 vfst.next()) { | |
| 3530 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
|
3531 InstanceKlass* holder = vfst.method()->method_holder(); |
|
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3532 loader = holder->class_loader(); |
|
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3533 protection_domain = holder->protection_domain(); |
| 0 | 3534 } |
| 3535 } | |
| 3536 } else { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3537 Klass* curr_klass_oop = java_lang_Class::as_Klass(curr_klass()); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3538 loader = InstanceKlass::cast(curr_klass_oop)->class_loader(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3539 protection_domain = InstanceKlass::cast(curr_klass_oop)->protection_domain(); |
| 0 | 3540 } |
| 3541 Handle h_loader(THREAD, loader); | |
| 3542 Handle h_prot (THREAD, protection_domain); | |
|
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3543 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
|
3544 false, thread); |
|
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3545 if (TraceClassResolution && result != NULL) { |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3546 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
|
3547 } |
|
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3548 return result; |
| 0 | 3549 JVM_END |
| 3550 | |
| 3551 | |
| 3552 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
| 3553 | |
| 3554 | |
| 3555 // resolve array handle and check arguments | |
| 3556 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
| 3557 if (arr == NULL) { | |
| 3558 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 3559 } | |
| 3560 oop a = JNIHandles::resolve_non_null(arr); | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3561 if (!a->is_array() || (type_array_only && !a->is_typeArray())) { |
| 0 | 3562 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); |
| 3563 } | |
| 3564 return arrayOop(a); | |
| 3565 } | |
| 3566 | |
| 3567 | |
| 3568 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
| 3569 JVMWrapper("JVM_GetArrayLength"); | |
| 3570 arrayOop a = check_array(env, arr, false, CHECK_0); | |
| 3571 return a->length(); | |
| 3572 JVM_END | |
| 3573 | |
| 3574 | |
| 3575 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
| 3576 JVMWrapper("JVM_Array_Get"); | |
| 3577 JvmtiVMObjectAllocEventCollector oam; | |
| 3578 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
| 3579 jvalue value; | |
| 3580 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
| 3581 oop box = Reflection::box(&value, type, CHECK_NULL); | |
| 3582 return JNIHandles::make_local(env, box); | |
| 3583 JVM_END | |
| 3584 | |
| 3585 | |
| 3586 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
| 3587 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
| 3588 jvalue value; | |
| 3589 value.i = 0; // to initialize value before getting used in CHECK | |
| 3590 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
| 3591 assert(a->is_typeArray(), "just checking"); | |
| 3592 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
| 3593 BasicType wide_type = (BasicType) wCode; | |
| 3594 if (type != wide_type) { | |
| 3595 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
| 3596 } | |
| 3597 return value; | |
| 3598 JVM_END | |
| 3599 | |
| 3600 | |
| 3601 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
| 3602 JVMWrapper("JVM_SetArrayElement"); | |
| 3603 arrayOop a = check_array(env, arr, false, CHECK); | |
| 3604 oop box = JNIHandles::resolve(val); | |
| 3605 jvalue value; | |
| 3606 value.i = 0; // to initialize value before getting used in CHECK | |
| 3607 BasicType value_type; | |
| 3608 if (a->is_objArray()) { | |
| 3609 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
| 3610 value_type = Reflection::unbox_for_regular_object(box, &value); | |
| 3611 } else { | |
| 3612 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
| 3613 } | |
| 3614 Reflection::array_set(&value, a, index, value_type, CHECK); | |
| 3615 JVM_END | |
| 3616 | |
| 3617 | |
| 3618 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
| 3619 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
| 3620 arrayOop a = check_array(env, arr, true, CHECK); | |
| 3621 assert(a->is_typeArray(), "just checking"); | |
| 3622 BasicType value_type = (BasicType) vCode; | |
| 3623 Reflection::array_set(&v, a, index, value_type, CHECK); | |
| 3624 JVM_END | |
| 3625 | |
| 3626 | |
| 3627 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
| 3628 JVMWrapper("JVM_NewArray"); | |
| 3629 JvmtiVMObjectAllocEventCollector oam; | |
| 3630 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3631 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
| 3632 return JNIHandles::make_local(env, result); | |
| 3633 JVM_END | |
| 3634 | |
| 3635 | |
| 3636 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
| 3637 JVMWrapper("JVM_NewMultiArray"); | |
| 3638 JvmtiVMObjectAllocEventCollector oam; | |
| 3639 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
| 3640 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3641 assert(dim_array->is_typeArray(), "just checking"); | |
| 3642 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
| 3643 return JNIHandles::make_local(env, result); | |
| 3644 JVM_END | |
| 3645 | |
| 3646 | |
| 3647 // Networking library support //////////////////////////////////////////////////////////////////// | |
| 3648 | |
| 3649 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
| 3650 JVMWrapper("JVM_InitializeSocketLibrary"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3651 return 0; |
| 0 | 3652 JVM_END |
| 3653 | |
| 3654 | |
| 3655 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
| 3656 JVMWrapper("JVM_Socket"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3657 return os::socket(domain, type, protocol); |
| 0 | 3658 JVM_END |
| 3659 | |
| 3660 | |
| 3661 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
| 3662 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
| 3663 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3664 return os::socket_close(fd); |
| 0 | 3665 JVM_END |
| 3666 | |
| 3667 | |
| 3668 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
| 3669 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
| 3670 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3671 return os::socket_shutdown(fd, howto); |
| 0 | 3672 JVM_END |
| 3673 | |
| 3674 | |
| 3675 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3676 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
| 3677 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3678 return os::recv(fd, buf, (size_t)nBytes, (uint)flags); |
| 0 | 3679 JVM_END |
| 3680 | |
| 3681 | |
| 3682 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3683 JVMWrapper2("JVM_Send (0x%x)", fd); | |
| 3684 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3685 return os::send(fd, buf, (size_t)nBytes, (uint)flags); |
| 0 | 3686 JVM_END |
| 3687 | |
| 3688 | |
| 3689 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
| 3690 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
| 3691 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3692 return os::timeout(fd, timeout); |
| 0 | 3693 JVM_END |
| 3694 | |
| 3695 | |
| 3696 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
| 3697 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
| 3698 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3699 return os::listen(fd, count); |
| 0 | 3700 JVM_END |
| 3701 | |
| 3702 | |
| 3703 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
| 3704 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
| 3705 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3706 return os::connect(fd, him, (socklen_t)len); |
| 0 | 3707 JVM_END |
| 3708 | |
| 3709 | |
| 3710 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
| 3711 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
| 3712 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3713 return os::bind(fd, him, (socklen_t)len); |
| 0 | 3714 JVM_END |
| 3715 | |
| 3716 | |
| 3717 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
| 3718 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
| 3719 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3720 socklen_t socklen = (socklen_t)(*len); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3721 jint result = os::accept(fd, him, &socklen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3722 *len = (jint)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3723 return result; |
| 0 | 3724 JVM_END |
| 3725 | |
| 3726 | |
| 3727 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
| 3728 JVMWrapper2("JVM_RecvFrom (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 socklen_t socklen = (socklen_t)(*fromlen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3731 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
|
3732 *fromlen = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3733 return result; |
| 0 | 3734 JVM_END |
| 3735 | |
| 3736 | |
| 3737 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
| 3738 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
| 3739 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3740 socklen_t socklen = (socklen_t)(*len); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3741 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
|
3742 *len = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3743 return result; |
| 0 | 3744 JVM_END |
| 3745 | |
| 3746 | |
| 3747 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
| 3748 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
| 3749 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3750 return os::sendto(fd, buf, (size_t)len, (uint)flags, to, (socklen_t)tolen); |
| 0 | 3751 JVM_END |
| 3752 | |
| 3753 | |
| 3754 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
| 3755 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
| 3756 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3757 return os::socket_available(fd, pbytes); |
| 0 | 3758 JVM_END |
| 3759 | |
| 3760 | |
| 3761 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
| 3762 JVMWrapper2("JVM_GetSockOpt (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)(*optlen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3765 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
|
3766 *optlen = (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_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
| 3772 JVMWrapper2("JVM_GetSockOpt (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::set_sock_opt(fd, level, optname, optval, (socklen_t)optlen); |
| 0 | 3775 JVM_END |
| 3776 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3777 |
| 0 | 3778 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) |
| 3779 JVMWrapper("JVM_GetHostName"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3780 return os::get_host_name(name, namelen); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3781 JVM_END |
| 0 | 3782 |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3783 |
| 0 | 3784 // Library support /////////////////////////////////////////////////////////////////////////// |
| 3785 | |
| 3786 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
| 3787 //%note jvm_ct | |
| 3788 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
| 3789 char ebuf[1024]; | |
| 3790 void *load_result; | |
| 3791 { | |
| 3792 ThreadToNativeFromVM ttnfvm(thread); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3793 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
| 0 | 3794 } |
| 3795 if (load_result == NULL) { | |
| 3796 char msg[1024]; | |
| 3797 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
| 3798 // Since 'ebuf' may contain a string encoded using | |
| 3799 // platform encoding scheme, we need to pass | |
| 3800 // Exceptions::unsafe_to_utf8 to the new_exception method | |
| 3801 // as the last argument. See bug 6367357. | |
| 3802 Handle h_exception = | |
| 3803 Exceptions::new_exception(thread, | |
| 3804 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
| 3805 msg, Exceptions::unsafe_to_utf8); | |
| 3806 | |
| 3807 THROW_HANDLE_0(h_exception); | |
| 3808 } | |
| 3809 return load_result; | |
| 3810 JVM_END | |
| 3811 | |
| 3812 | |
| 3813 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
| 3814 JVMWrapper("JVM_UnloadLibrary"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3815 os::dll_unload(handle); |
| 0 | 3816 JVM_END |
| 3817 | |
| 3818 | |
| 3819 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
| 3820 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3821 return os::dll_lookup(handle, name); |
| 0 | 3822 JVM_END |
| 3823 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3824 |
| 0 | 3825 // Floating point support //////////////////////////////////////////////////////////////////// |
| 3826 | |
| 3827 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
| 3828 JVMWrapper("JVM_IsNaN"); | |
| 3829 return g_isnan(a); | |
| 3830 JVM_END | |
| 3831 | |
| 3832 | |
| 3833 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
| 3834 | |
| 3835 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
| 3836 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
| 3837 return Threads::is_supported_jni_version_including_1_1(version); | |
| 3838 JVM_END | |
| 3839 | |
| 3840 | |
| 3841 // String support /////////////////////////////////////////////////////////////////////////// | |
| 3842 | |
| 3843 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
| 3844 JVMWrapper("JVM_InternString"); | |
| 3845 JvmtiVMObjectAllocEventCollector oam; | |
| 3846 if (str == NULL) return NULL; | |
| 3847 oop string = JNIHandles::resolve_non_null(str); | |
| 3848 oop result = StringTable::intern(string, CHECK_NULL); | |
| 3849 return (jstring) JNIHandles::make_local(env, result); | |
| 3850 JVM_END | |
| 3851 | |
| 3852 | |
| 3853 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
| 3854 | |
| 3855 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
| 3856 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
| 3857 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
| 3858 // that only works with java threads. | |
| 3859 | |
| 3860 | |
| 3861 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
| 3862 VM_Exit::block_if_vm_exited(); | |
| 3863 JVMWrapper("JVM_RawMonitorCreate"); | |
| 3864 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
| 3865 } | |
| 3866 | |
| 3867 | |
| 3868 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
| 3869 VM_Exit::block_if_vm_exited(); | |
| 3870 JVMWrapper("JVM_RawMonitorDestroy"); | |
| 3871 delete ((Mutex*) mon); | |
| 3872 } | |
| 3873 | |
| 3874 | |
| 3875 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
| 3876 VM_Exit::block_if_vm_exited(); | |
| 3877 JVMWrapper("JVM_RawMonitorEnter"); | |
| 3878 ((Mutex*) mon)->jvm_raw_lock(); | |
| 3879 return 0; | |
| 3880 } | |
| 3881 | |
| 3882 | |
| 3883 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
| 3884 VM_Exit::block_if_vm_exited(); | |
| 3885 JVMWrapper("JVM_RawMonitorExit"); | |
| 3886 ((Mutex*) mon)->jvm_raw_unlock(); | |
| 3887 } | |
| 3888 | |
| 3889 | |
| 3890 // Support for Serialization | |
| 3891 | |
| 3892 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
| 3893 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
| 3894 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
| 3895 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
| 3896 | |
| 3897 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
| 3898 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
| 3899 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
| 3900 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
| 3901 | |
| 3902 | |
| 3903 void initialize_converter_functions() { | |
| 3904 if (JDK_Version::is_gte_jdk14x_version()) { | |
| 3905 // These functions only exist for compatibility with 1.3.1 and earlier | |
| 3906 return; | |
| 3907 } | |
| 3908 | |
| 3909 // called from universe_post_init() | |
| 3910 assert( | |
| 3911 int_bits_to_float_fn == NULL && | |
| 3912 long_bits_to_double_fn == NULL && | |
| 3913 float_to_int_bits_fn == NULL && | |
| 3914 double_to_long_bits_fn == NULL , | |
| 3915 "initialization done twice" | |
| 3916 ); | |
| 3917 // initialize | |
| 3918 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
| 3919 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
| 3920 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
| 3921 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
| 3922 // verify | |
| 3923 assert( | |
| 3924 int_bits_to_float_fn != NULL && | |
| 3925 long_bits_to_double_fn != NULL && | |
| 3926 float_to_int_bits_fn != NULL && | |
| 3927 double_to_long_bits_fn != NULL , | |
| 3928 "initialization failed" | |
| 3929 ); | |
| 3930 } | |
| 3931 | |
| 3932 | |
| 3933 // Serialization | |
| 3934 JVM_ENTRY(void, JVM_SetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
| 3935 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
| 3936 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
| 3937 | |
| 3938 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
| 3939 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
| 3940 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
| 3941 oop o = JNIHandles::resolve(obj); | |
| 3942 | |
| 3943 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
| 3944 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 3945 } | |
| 3946 | |
| 3947 jsize nfids = fids->length(); | |
| 3948 if (nfids == 0) return; | |
| 3949 | |
| 3950 if (tcodes->length() < nfids) { | |
| 3951 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
| 3952 } | |
| 3953 | |
| 3954 jsize off = 0; | |
| 3955 /* loop through fields, setting values */ | |
| 3956 for (jsize i = 0; i < nfids; i++) { | |
| 3957 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
| 3958 int field_offset; | |
| 3959 if (fid != NULL) { | |
| 3960 // NULL is a legal value for fid, but retrieving the field offset | |
| 3961 // trigger assertion in that case | |
| 3962 field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 3963 } | |
| 3964 | |
| 3965 switch (tcodes->char_at(i)) { | |
| 3966 case 'Z': | |
| 3967 if (fid != NULL) { | |
| 3968 jboolean val = (dbuf->byte_at(off) != 0) ? JNI_TRUE : JNI_FALSE; | |
| 3969 o->bool_field_put(field_offset, val); | |
| 3970 } | |
| 3971 off++; | |
| 3972 break; | |
| 3973 | |
| 3974 case 'B': | |
| 3975 if (fid != NULL) { | |
| 3976 o->byte_field_put(field_offset, dbuf->byte_at(off)); | |
| 3977 } | |
| 3978 off++; | |
| 3979 break; | |
| 3980 | |
| 3981 case 'C': | |
| 3982 if (fid != NULL) { | |
| 3983 jchar val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
| 3984 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
| 3985 o->char_field_put(field_offset, val); | |
| 3986 } | |
| 3987 off += 2; | |
| 3988 break; | |
| 3989 | |
| 3990 case 'S': | |
| 3991 if (fid != NULL) { | |
| 3992 jshort val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
| 3993 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
| 3994 o->short_field_put(field_offset, val); | |
| 3995 } | |
| 3996 off += 2; | |
| 3997 break; | |
| 3998 | |
| 3999 case 'I': | |
| 4000 if (fid != NULL) { | |
| 4001 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
| 4002 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
| 4003 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
| 4004 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
| 4005 o->int_field_put(field_offset, ival); | |
| 4006 } | |
| 4007 off += 4; | |
| 4008 break; | |
| 4009 | |
| 4010 case 'F': | |
| 4011 if (fid != NULL) { | |
| 4012 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
| 4013 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
| 4014 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
| 4015 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
| 4016 jfloat fval = (*int_bits_to_float_fn)(env, NULL, ival); | |
| 4017 o->float_field_put(field_offset, fval); | |
| 4018 } | |
| 4019 off += 4; | |
| 4020 break; | |
| 4021 | |
| 4022 case 'J': | |
| 4023 if (fid != NULL) { | |
| 4024 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
| 4025 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
| 4026 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
| 4027 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
| 4028 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
| 4029 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
| 4030 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
| 4031 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
| 4032 o->long_field_put(field_offset, lval); | |
| 4033 } | |
| 4034 off += 8; | |
| 4035 break; | |
| 4036 | |
| 4037 case 'D': | |
| 4038 if (fid != NULL) { | |
| 4039 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
| 4040 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
| 4041 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
| 4042 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
| 4043 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
| 4044 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
| 4045 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
| 4046 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
| 4047 jdouble dval = (*long_bits_to_double_fn)(env, NULL, lval); | |
| 4048 o->double_field_put(field_offset, dval); | |
| 4049 } | |
| 4050 off += 8; | |
| 4051 break; | |
| 4052 | |
| 4053 default: | |
| 4054 // Illegal typecode | |
| 4055 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
| 4056 } | |
| 4057 } | |
| 4058 JVM_END | |
| 4059 | |
| 4060 | |
| 4061 JVM_ENTRY(void, JVM_GetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
| 4062 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
| 4063 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
| 4064 | |
| 4065 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
| 4066 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
| 4067 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
| 4068 oop o = JNIHandles::resolve(obj); | |
| 4069 | |
| 4070 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
| 4071 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 4072 } | |
| 4073 | |
| 4074 jsize nfids = fids->length(); | |
| 4075 if (nfids == 0) return; | |
| 4076 | |
| 4077 if (tcodes->length() < nfids) { | |
| 4078 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
| 4079 } | |
| 4080 | |
| 4081 /* loop through fields, fetching values */ | |
| 4082 jsize off = 0; | |
| 4083 for (jsize i = 0; i < nfids; i++) { | |
| 4084 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
| 4085 if (fid == NULL) { | |
| 4086 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 4087 } | |
| 4088 int field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 4089 | |
| 4090 switch (tcodes->char_at(i)) { | |
| 4091 case 'Z': | |
| 4092 { | |
| 4093 jboolean val = o->bool_field(field_offset); | |
| 4094 dbuf->byte_at_put(off++, (val != 0) ? 1 : 0); | |
| 4095 } | |
| 4096 break; | |
| 4097 | |
| 4098 case 'B': | |
| 4099 dbuf->byte_at_put(off++, o->byte_field(field_offset)); | |
| 4100 break; | |
| 4101 | |
| 4102 case 'C': | |
| 4103 { | |
| 4104 jchar val = o->char_field(field_offset); | |
| 4105 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 4106 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 4107 } | |
| 4108 break; | |
| 4109 | |
| 4110 case 'S': | |
| 4111 { | |
| 4112 jshort val = o->short_field(field_offset); | |
| 4113 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 4114 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 4115 } | |
| 4116 break; | |
| 4117 | |
| 4118 case 'I': | |
| 4119 { | |
| 4120 jint val = o->int_field(field_offset); | |
| 4121 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
| 4122 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
| 4123 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 4124 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 4125 } | |
| 4126 break; | |
| 4127 | |
| 4128 case 'F': | |
| 4129 { | |
| 4130 jfloat fval = o->float_field(field_offset); | |
| 4131 jint ival = (*float_to_int_bits_fn)(env, NULL, fval); | |
| 4132 dbuf->byte_at_put(off++, (ival >> 24) & 0xFF); | |
| 4133 dbuf->byte_at_put(off++, (ival >> 16) & 0xFF); | |
| 4134 dbuf->byte_at_put(off++, (ival >> 8) & 0xFF); | |
| 4135 dbuf->byte_at_put(off++, (ival >> 0) & 0xFF); | |
| 4136 } | |
| 4137 break; | |
| 4138 | |
| 4139 case 'J': | |
| 4140 { | |
| 4141 jlong val = o->long_field(field_offset); | |
| 4142 dbuf->byte_at_put(off++, (val >> 56) & 0xFF); | |
| 4143 dbuf->byte_at_put(off++, (val >> 48) & 0xFF); | |
| 4144 dbuf->byte_at_put(off++, (val >> 40) & 0xFF); | |
| 4145 dbuf->byte_at_put(off++, (val >> 32) & 0xFF); | |
| 4146 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
| 4147 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
| 4148 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 4149 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 4150 } | |
| 4151 break; | |
| 4152 | |
| 4153 case 'D': | |
| 4154 { | |
| 4155 jdouble dval = o->double_field(field_offset); | |
| 4156 jlong lval = (*double_to_long_bits_fn)(env, NULL, dval); | |
| 4157 dbuf->byte_at_put(off++, (lval >> 56) & 0xFF); | |
| 4158 dbuf->byte_at_put(off++, (lval >> 48) & 0xFF); | |
| 4159 dbuf->byte_at_put(off++, (lval >> 40) & 0xFF); | |
| 4160 dbuf->byte_at_put(off++, (lval >> 32) & 0xFF); | |
| 4161 dbuf->byte_at_put(off++, (lval >> 24) & 0xFF); | |
| 4162 dbuf->byte_at_put(off++, (lval >> 16) & 0xFF); | |
| 4163 dbuf->byte_at_put(off++, (lval >> 8) & 0xFF); | |
| 4164 dbuf->byte_at_put(off++, (lval >> 0) & 0xFF); | |
| 4165 } | |
| 4166 break; | |
| 4167 | |
| 4168 default: | |
| 4169 // Illegal typecode | |
| 4170 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
| 4171 } | |
| 4172 } | |
| 4173 JVM_END | |
| 4174 | |
| 4175 | |
| 4176 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
| 4177 | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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parents:
2162
diff
changeset
|
4178 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS) { |
| 0 | 4179 // Security Note: |
| 4180 // The Java level wrapper will perform the necessary security check allowing | |
| 4181 // us to pass the NULL as the initiating class loader. | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6271
diff
changeset
|
4182 Klass* klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); |
|
878
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
4183 |
| 0 | 4184 KlassHandle klass_handle(THREAD, klass); |
| 4185 // Check if we should initialize the class | |
| 4186 if (init && klass_handle->oop_is_instance()) { | |
| 4187 klass_handle->initialize(CHECK_NULL); | |
| 4188 } | |
| 4189 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
| 4190 } | |
| 4191 | |
| 4192 | |
| 4193 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
| 4194 | |
| 4195 #ifndef PRODUCT | |
| 4196 | |
| 4197 extern "C" { | |
| 4198 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
| 4199 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
| 4200 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
| 4201 } | |
| 4202 | |
| 4203 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
| 4204 JVMWrapper("JVM_AccessBoolVMFlag"); | |
| 4205 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, INTERNAL); | |
| 4206 JVM_END | |
| 4207 | |
| 4208 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
| 4209 JVMWrapper("JVM_AccessVMIntFlag"); | |
| 4210 intx v; | |
| 4211 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, INTERNAL); | |
| 4212 *value = (jint)v; | |
| 4213 return result; | |
| 4214 JVM_END | |
| 4215 | |
| 4216 | |
| 4217 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
| 4218 JVMWrapper("JVM_VMBreakPoint"); | |
| 4219 oop the_obj = JNIHandles::resolve(obj); | |
| 4220 BREAKPOINT; | |
| 4221 JVM_END | |
| 4222 | |
| 4223 | |
| 4224 #endif | |
| 4225 | |
| 4226 | |
| 4227 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4228 | |
| 4229 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
| 4230 JVMWrapper("JVM_InvokeMethod"); | |
| 4231 Handle method_handle; | |
| 4232 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
| 4233 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
| 4234 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
| 4235 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4236 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
| 4237 jobject res = JNIHandles::make_local(env, result); | |
| 4238 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4239 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
| 4240 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
| 4241 if (java_lang_Class::is_primitive(ret_type)) { | |
| 4242 // Only for primitive type vm allocates memory for java object. | |
| 4243 // See box() method. | |
| 4244 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4245 } | |
| 4246 } | |
| 4247 return res; | |
| 4248 } else { | |
| 4249 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
| 4250 } | |
| 4251 JVM_END | |
| 4252 | |
| 4253 | |
| 4254 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
| 4255 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
| 4256 oop constructor_mirror = JNIHandles::resolve(c); | |
| 4257 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4258 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
| 4259 jobject res = JNIHandles::make_local(env, result); | |
| 4260 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4261 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4262 } | |
| 4263 return res; | |
| 4264 JVM_END | |
| 4265 | |
| 4266 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4267 | |
| 4268 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
| 4269 JVMWrapper("JVM_SupportsCX8"); | |
| 4270 return VM_Version::supports_cx8(); | |
| 4271 JVM_END | |
| 4272 | |
| 4273 | |
| 4274 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
| 4275 JVMWrapper("JVM_CX8Field"); | |
| 4276 jlong res; | |
| 4277 oop o = JNIHandles::resolve(obj); | |
| 4278 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 4279 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
| 4280 | |
| 4281 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
| 4282 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
| 4283 | |
| 4284 return res == oldVal; | |
| 4285 JVM_END | |
| 4286 | |
|
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4287 // DTrace /////////////////////////////////////////////////////////////////// |
|
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4288 |
|
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4289 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
|
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4290 JVMWrapper("JVM_DTraceGetVersion"); |
|
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4291 return (jint)JVM_TRACING_DTRACE_VERSION; |
|
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4292 JVM_END |
|
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|
4293 |
|
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4294 JVM_ENTRY(jlong,JVM_DTraceActivate( |
|
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4295 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
|
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4296 JVM_DTraceProvider* providers)) |
|
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4297 JVMWrapper("JVM_DTraceActivate"); |
|
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4298 return DTraceJSDT::activate( |
|
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|
4299 version, module_name, providers_count, providers, CHECK_0); |
|
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4300 JVM_END |
|
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|
4301 |
|
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|
4302 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
|
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4303 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
|
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4304 return DTraceJSDT::is_probe_enabled(method); |
|
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4305 JVM_END |
|
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4306 |
|
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|
4307 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
|
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4308 JVMWrapper("JVM_DTraceDispose"); |
|
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4309 DTraceJSDT::dispose(handle); |
|
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4310 JVM_END |
|
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4311 |
|
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4312 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
|
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4313 JVMWrapper("JVM_DTraceIsSupported"); |
|
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4314 return DTraceJSDT::is_supported(); |
|
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4315 JVM_END |
|
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4316 |
| 0 | 4317 // Returns an array of all live Thread objects (VM internal JavaThreads, |
| 4318 // jvmti agent threads, and JNI attaching threads are skipped) | |
| 4319 // See CR 6404306 regarding JNI attaching threads | |
| 4320 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
| 4321 ResourceMark rm(THREAD); | |
| 4322 ThreadsListEnumerator tle(THREAD, false, false); | |
| 4323 JvmtiVMObjectAllocEventCollector oam; | |
| 4324 | |
| 4325 int num_threads = tle.num_threads(); | |
| 1142 | 4326 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
| 0 | 4327 objArrayHandle threads_ah(THREAD, r); |
| 4328 | |
| 4329 for (int i = 0; i < num_threads; i++) { | |
| 4330 Handle h = tle.get_threadObj(i); | |
| 4331 threads_ah->obj_at_put(i, h()); | |
| 4332 } | |
| 4333 | |
| 4334 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
| 4335 JVM_END | |
| 4336 | |
| 4337 | |
| 4338 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
| 4339 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
| 4340 // the corresponding entry in the given threads array | |
| 4341 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
| 4342 JVMWrapper("JVM_DumpThreads"); | |
| 4343 JvmtiVMObjectAllocEventCollector oam; | |
| 4344 | |
| 4345 // Check if threads is null | |
| 4346 if (threads == NULL) { | |
| 4347 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4348 } | |
| 4349 | |
| 4350 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
| 4351 objArrayHandle ah(THREAD, a); | |
| 4352 int num_threads = ah->length(); | |
| 4353 // check if threads is non-empty array | |
| 4354 if (num_threads == 0) { | |
| 4355 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
| 4356 } | |
| 4357 | |
| 4358 // check if threads is not an array of objects of Thread class | |
|
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|
4359 Klass* k = ObjArrayKlass::cast(ah->klass())->element_klass(); |
| 1142 | 4360 if (k != SystemDictionary::Thread_klass()) { |
| 0 | 4361 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
| 4362 } | |
| 4363 | |
| 4364 ResourceMark rm(THREAD); | |
| 4365 | |
| 4366 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
| 4367 for (int i = 0; i < num_threads; i++) { | |
| 4368 oop thread_obj = ah->obj_at(i); | |
| 4369 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
| 4370 thread_handle_array->append(h); | |
| 4371 } | |
| 4372 | |
| 4373 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
| 4374 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
| 4375 | |
| 4376 JVM_END | |
| 4377 | |
| 4378 // JVM monitoring and management support | |
| 4379 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
| 4380 return Management::get_jmm_interface(version); | |
| 4381 JVM_END | |
| 4382 | |
| 4383 // com.sun.tools.attach.VirtualMachine agent properties support | |
| 4384 // | |
| 4385 // Initialize the agent properties with the properties maintained in the VM | |
| 4386 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
| 4387 JVMWrapper("JVM_InitAgentProperties"); | |
| 4388 ResourceMark rm; | |
| 4389 | |
| 4390 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
| 4391 | |
| 4392 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
| 4393 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
| 4394 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
| 4395 return properties; | |
| 4396 JVM_END | |
| 4397 | |
| 4398 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
| 4399 { | |
| 4400 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
| 4401 JvmtiVMObjectAllocEventCollector oam; | |
| 4402 | |
| 4403 if (ofClass == NULL) { | |
| 4404 return NULL; | |
| 4405 } | |
| 4406 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
| 4407 // Special handling for primitive objects | |
| 4408 if (java_lang_Class::is_primitive(mirror())) { | |
| 4409 return NULL; | |
| 4410 } | |
|
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4411 Klass* k = java_lang_Class::as_Klass(mirror()); |
| 6983 | 4412 if (!k->oop_is_instance()) { |
| 0 | 4413 return NULL; |
| 4414 } | |
| 4415 instanceKlassHandle ik_h(THREAD, k); | |
| 4416 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
| 4417 if (encl_method_class_idx == 0) { | |
| 4418 return NULL; | |
| 4419 } | |
| 1142 | 4420 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
| 0 | 4421 objArrayHandle dest(THREAD, dest_o); |
|
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4422 Klass* enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); |
| 6983 | 4423 dest->obj_at_put(0, enc_k->java_mirror()); |
| 0 | 4424 int encl_method_method_idx = ik_h->enclosing_method_method_index(); |
| 4425 if (encl_method_method_idx != 0) { | |
|
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|
4426 Symbol* sym = ik_h->constants()->symbol_at( |
| 0 | 4427 extract_low_short_from_int( |
| 4428 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4429 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4430 dest->obj_at_put(1, str()); | |
|
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4431 sym = ik_h->constants()->symbol_at( |
| 0 | 4432 extract_high_short_from_int( |
| 4433 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4434 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4435 dest->obj_at_put(2, str()); | |
| 4436 } | |
| 4437 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 4438 } | |
| 4439 JVM_END | |
| 4440 | |
| 4441 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
| 4442 jint javaThreadState)) | |
| 4443 { | |
| 4444 // If new thread states are added in future JDK and VM versions, | |
| 4445 // this should check if the JDK version is compatible with thread | |
| 4446 // states supported by the VM. Return NULL if not compatible. | |
| 4447 // | |
| 4448 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4449 // to the Java thread state that the JDK supports. | |
| 4450 // | |
| 4451 | |
| 4452 typeArrayHandle values_h; | |
| 4453 switch (javaThreadState) { | |
| 4454 case JAVA_THREAD_STATE_NEW : { | |
| 4455 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4456 values_h = typeArrayHandle(THREAD, r); | |
| 4457 values_h->int_at_put(0, java_lang_Thread::NEW); | |
| 4458 break; | |
| 4459 } | |
| 4460 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4461 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4462 values_h = typeArrayHandle(THREAD, r); | |
| 4463 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
| 4464 break; | |
| 4465 } | |
| 4466 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4467 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4468 values_h = typeArrayHandle(THREAD, r); | |
| 4469 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
| 4470 break; | |
| 4471 } | |
| 4472 case JAVA_THREAD_STATE_WAITING : { | |
| 4473 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
| 4474 values_h = typeArrayHandle(THREAD, r); | |
| 4475 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
| 4476 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
| 4477 break; | |
| 4478 } | |
| 4479 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4480 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
| 4481 values_h = typeArrayHandle(THREAD, r); | |
| 4482 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
| 4483 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
| 4484 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
| 4485 break; | |
| 4486 } | |
| 4487 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4488 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4489 values_h = typeArrayHandle(THREAD, r); | |
| 4490 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
| 4491 break; | |
| 4492 } | |
| 4493 default: | |
| 4494 // Unknown state - probably incompatible JDK version | |
| 4495 return NULL; | |
| 4496 } | |
| 4497 | |
| 4498 return (jintArray) JNIHandles::make_local(env, values_h()); | |
| 4499 } | |
| 4500 JVM_END | |
| 4501 | |
| 4502 | |
| 4503 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
| 4504 jint javaThreadState, | |
| 4505 jintArray values)) | |
| 4506 { | |
| 4507 // If new thread states are added in future JDK and VM versions, | |
| 4508 // this should check if the JDK version is compatible with thread | |
| 4509 // states supported by the VM. Return NULL if not compatible. | |
| 4510 // | |
| 4511 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4512 // to the Java thread state that the JDK supports. | |
| 4513 // | |
| 4514 | |
| 4515 ResourceMark rm; | |
| 4516 | |
| 4517 // Check if threads is null | |
| 4518 if (values == NULL) { | |
| 4519 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4520 } | |
| 4521 | |
| 4522 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
| 4523 typeArrayHandle values_h(THREAD, v); | |
| 4524 | |
| 4525 objArrayHandle names_h; | |
| 4526 switch (javaThreadState) { | |
| 4527 case JAVA_THREAD_STATE_NEW : { | |
| 4528 assert(values_h->length() == 1 && | |
| 4529 values_h->int_at(0) == java_lang_Thread::NEW, | |
| 4530 "Invalid threadStatus value"); | |
| 4531 | |
| 1142 | 4532 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4533 1, /* only 1 substate */ |
| 4534 CHECK_NULL); | |
| 4535 names_h = objArrayHandle(THREAD, r); | |
| 4536 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
| 4537 names_h->obj_at_put(0, name()); | |
| 4538 break; | |
| 4539 } | |
| 4540 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4541 assert(values_h->length() == 1 && | |
| 4542 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
| 4543 "Invalid threadStatus value"); | |
| 4544 | |
| 1142 | 4545 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4546 1, /* only 1 substate */ |
| 4547 CHECK_NULL); | |
| 4548 names_h = objArrayHandle(THREAD, r); | |
| 4549 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
| 4550 names_h->obj_at_put(0, name()); | |
| 4551 break; | |
| 4552 } | |
| 4553 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4554 assert(values_h->length() == 1 && | |
| 4555 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
| 4556 "Invalid threadStatus value"); | |
| 4557 | |
| 1142 | 4558 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4559 1, /* only 1 substate */ |
| 4560 CHECK_NULL); | |
| 4561 names_h = objArrayHandle(THREAD, r); | |
| 4562 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
| 4563 names_h->obj_at_put(0, name()); | |
| 4564 break; | |
| 4565 } | |
| 4566 case JAVA_THREAD_STATE_WAITING : { | |
| 4567 assert(values_h->length() == 2 && | |
| 4568 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
| 4569 values_h->int_at(1) == java_lang_Thread::PARKED, | |
| 4570 "Invalid threadStatus value"); | |
| 1142 | 4571 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4572 2, /* number of substates */ |
| 4573 CHECK_NULL); | |
| 4574 names_h = objArrayHandle(THREAD, r); | |
| 4575 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
| 4576 CHECK_NULL); | |
| 4577 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
| 4578 CHECK_NULL); | |
| 4579 names_h->obj_at_put(0, name0()); | |
| 4580 names_h->obj_at_put(1, name1()); | |
| 4581 break; | |
| 4582 } | |
| 4583 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4584 assert(values_h->length() == 3 && | |
| 4585 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
| 4586 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
| 4587 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
| 4588 "Invalid threadStatus value"); | |
| 1142 | 4589 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4590 3, /* number of substates */ |
| 4591 CHECK_NULL); | |
| 4592 names_h = objArrayHandle(THREAD, r); | |
| 4593 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
| 4594 CHECK_NULL); | |
| 4595 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
| 4596 CHECK_NULL); | |
| 4597 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
| 4598 CHECK_NULL); | |
| 4599 names_h->obj_at_put(0, name0()); | |
| 4600 names_h->obj_at_put(1, name1()); | |
| 4601 names_h->obj_at_put(2, name2()); | |
| 4602 break; | |
| 4603 } | |
| 4604 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4605 assert(values_h->length() == 1 && | |
| 4606 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
| 4607 "Invalid threadStatus value"); | |
| 1142 | 4608 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4609 1, /* only 1 substate */ |
| 4610 CHECK_NULL); | |
| 4611 names_h = objArrayHandle(THREAD, r); | |
| 4612 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
| 4613 names_h->obj_at_put(0, name()); | |
| 4614 break; | |
| 4615 } | |
| 4616 default: | |
| 4617 // Unknown state - probably incompatible JDK version | |
| 4618 return NULL; | |
| 4619 } | |
| 4620 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
| 4621 } | |
| 4622 JVM_END | |
| 4623 | |
| 4624 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
| 4625 { | |
| 4626 memset(info, 0, sizeof(info_size)); | |
| 4627 | |
| 4628 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
| 4629 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4630 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4631 | |
| 4632 // when we add a new capability in the jvm_version_info struct, we should also | |
| 4633 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
| 4634 // counter defined in runtimeService.cpp. | |
| 4635 info->is_attachable = AttachListener::is_attach_supported(); | |
| 4636 } | |
| 4637 JVM_END |