Mercurial > hg > truffle
annotate src/share/vm/prims/jvm.cpp @ 6271:93c71eb28866
7188911: nightly failures after JSR 292 lazy method handle update (round 2)
Reviewed-by: kvn, jrose
| author | twisti |
|---|---|
| date | Tue, 07 Aug 2012 14:32:08 -0700 |
| parents | e74da3c2b827 |
| children | da91efe96a93 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2012, 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" | |
| 33 #include "memory/oopFactory.hpp" | |
| 34 #include "memory/universe.inline.hpp" | |
| 3938 | 35 #include "oops/fieldStreams.hpp" |
| 1972 | 36 #include "oops/instanceKlass.hpp" |
| 37 #include "oops/objArrayKlass.hpp" | |
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38 #include "oops/methodOop.hpp" |
| 1972 | 39 #include "prims/jvm.h" |
| 40 #include "prims/jvm_misc.hpp" | |
| 41 #include "prims/jvmtiExport.hpp" | |
| 42 #include "prims/jvmtiThreadState.hpp" | |
| 43 #include "prims/nativeLookup.hpp" | |
| 44 #include "prims/privilegedStack.hpp" | |
| 45 #include "runtime/arguments.hpp" | |
| 46 #include "runtime/dtraceJSDT.hpp" | |
| 47 #include "runtime/handles.inline.hpp" | |
| 48 #include "runtime/init.hpp" | |
| 49 #include "runtime/interfaceSupport.hpp" | |
| 50 #include "runtime/java.hpp" | |
| 51 #include "runtime/javaCalls.hpp" | |
| 52 #include "runtime/jfieldIDWorkaround.hpp" | |
| 53 #include "runtime/os.hpp" | |
| 54 #include "runtime/perfData.hpp" | |
| 55 #include "runtime/reflection.hpp" | |
| 56 #include "runtime/vframe.hpp" | |
| 57 #include "runtime/vm_operations.hpp" | |
| 58 #include "services/attachListener.hpp" | |
| 59 #include "services/management.hpp" | |
| 60 #include "services/threadService.hpp" | |
| 61 #include "utilities/copy.hpp" | |
| 62 #include "utilities/defaultStream.hpp" | |
| 63 #include "utilities/dtrace.hpp" | |
| 64 #include "utilities/events.hpp" | |
| 65 #include "utilities/histogram.hpp" | |
| 66 #include "utilities/top.hpp" | |
| 67 #include "utilities/utf8.hpp" | |
| 68 #ifdef TARGET_OS_FAMILY_linux | |
| 69 # include "jvm_linux.h" | |
| 70 #endif | |
| 71 #ifdef TARGET_OS_FAMILY_solaris | |
| 72 # include "jvm_solaris.h" | |
| 73 #endif | |
| 74 #ifdef TARGET_OS_FAMILY_windows | |
| 75 # include "jvm_windows.h" | |
| 76 #endif | |
| 3960 | 77 #ifdef TARGET_OS_FAMILY_bsd |
| 78 # include "jvm_bsd.h" | |
| 79 #endif | |
| 1972 | 80 |
| 0 | 81 #include <errno.h> |
| 82 | |
| 4006 | 83 #ifndef USDT2 |
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84 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__begin, long long); |
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85 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__end, int); |
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86 HS_DTRACE_PROBE_DECL0(hotspot, thread__yield); |
| 4006 | 87 #endif /* !USDT2 */ |
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88 |
| 0 | 89 /* |
| 90 NOTE about use of any ctor or function call that can trigger a safepoint/GC: | |
| 91 such ctors and calls MUST NOT come between an oop declaration/init and its | |
| 92 usage because if objects are move this may cause various memory stomps, bus | |
| 93 errors and segfaults. Here is a cookbook for causing so called "naked oop | |
| 94 failures": | |
| 95 | |
| 96 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> { | |
| 97 JVMWrapper("JVM_GetClassDeclaredFields"); | |
| 98 | |
| 99 // Object address to be held directly in mirror & not visible to GC | |
| 100 oop mirror = JNIHandles::resolve_non_null(ofClass); | |
| 101 | |
| 102 // If this ctor can hit a safepoint, moving objects around, then | |
| 103 ComplexConstructor foo; | |
| 104 | |
| 105 // Boom! mirror may point to JUNK instead of the intended object | |
| 106 (some dereference of mirror) | |
| 107 | |
| 108 // Here's another call that may block for GC, making mirror stale | |
| 109 MutexLocker ml(some_lock); | |
| 110 | |
| 111 // And here's an initializer that can result in a stale oop | |
| 112 // all in one step. | |
| 113 oop o = call_that_can_throw_exception(TRAPS); | |
| 114 | |
| 115 | |
| 116 The solution is to keep the oop declaration BELOW the ctor or function | |
| 117 call that might cause a GC, do another resolve to reassign the oop, or | |
| 118 consider use of a Handle instead of an oop so there is immunity from object | |
| 119 motion. But note that the "QUICK" entries below do not have a handlemark | |
| 120 and thus can only support use of handles passed in. | |
| 121 */ | |
| 122 | |
| 123 static void trace_class_resolution_impl(klassOop to_class, TRAPS) { | |
| 124 ResourceMark rm; | |
| 125 int line_number = -1; | |
| 126 const char * source_file = NULL; | |
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127 const char * trace = "explicit"; |
| 0 | 128 klassOop caller = NULL; |
| 129 JavaThread* jthread = JavaThread::current(); | |
| 130 if (jthread->has_last_Java_frame()) { | |
| 131 vframeStream vfst(jthread); | |
| 132 | |
| 133 // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames | |
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134 TempNewSymbol access_controller = SymbolTable::new_symbol("java/security/AccessController", CHECK); |
| 0 | 135 klassOop access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); |
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136 TempNewSymbol privileged_action = SymbolTable::new_symbol("java/security/PrivilegedAction", CHECK); |
| 0 | 137 klassOop privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); |
| 138 | |
| 139 methodOop last_caller = NULL; | |
| 140 | |
| 141 while (!vfst.at_end()) { | |
| 142 methodOop m = vfst.method(); | |
| 1142 | 143 if (!vfst.method()->method_holder()->klass_part()->is_subclass_of(SystemDictionary::ClassLoader_klass())&& |
| 0 | 144 !vfst.method()->method_holder()->klass_part()->is_subclass_of(access_controller_klass) && |
| 145 !vfst.method()->method_holder()->klass_part()->is_subclass_of(privileged_action_klass)) { | |
| 146 break; | |
| 147 } | |
| 148 last_caller = m; | |
| 149 vfst.next(); | |
| 150 } | |
| 151 // if this is called from Class.forName0 and that is called from Class.forName, | |
| 152 // then print the caller of Class.forName. If this is Class.loadClass, then print | |
| 153 // that caller, otherwise keep quiet since this should be picked up elsewhere. | |
| 154 bool found_it = false; | |
| 155 if (!vfst.at_end() && | |
| 156 instanceKlass::cast(vfst.method()->method_holder())->name() == vmSymbols::java_lang_Class() && | |
| 157 vfst.method()->name() == vmSymbols::forName0_name()) { | |
| 158 vfst.next(); | |
| 159 if (!vfst.at_end() && | |
| 160 instanceKlass::cast(vfst.method()->method_holder())->name() == vmSymbols::java_lang_Class() && | |
| 161 vfst.method()->name() == vmSymbols::forName_name()) { | |
| 162 vfst.next(); | |
| 163 found_it = true; | |
| 164 } | |
| 165 } else if (last_caller != NULL && | |
| 166 instanceKlass::cast(last_caller->method_holder())->name() == | |
| 167 vmSymbols::java_lang_ClassLoader() && | |
| 168 (last_caller->name() == vmSymbols::loadClassInternal_name() || | |
| 169 last_caller->name() == vmSymbols::loadClass_name())) { | |
| 170 found_it = true; | |
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171 } else if (!vfst.at_end()) { |
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172 if (vfst.method()->is_native()) { |
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173 // JNI call |
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174 found_it = true; |
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175 } |
| 0 | 176 } |
| 177 if (found_it && !vfst.at_end()) { | |
| 178 // found the caller | |
| 179 caller = vfst.method()->method_holder(); | |
| 180 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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181 if (line_number == -1) { |
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182 // show method name if it's a native method |
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183 trace = vfst.method()->name_and_sig_as_C_string(); |
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184 } |
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185 Symbol* s = instanceKlass::cast(caller)->source_file_name(); |
| 0 | 186 if (s != NULL) { |
| 187 source_file = s->as_C_string(); | |
| 188 } | |
| 189 } | |
| 190 } | |
| 191 if (caller != NULL) { | |
| 192 if (to_class != caller) { | |
| 193 const char * from = Klass::cast(caller)->external_name(); | |
| 194 const char * to = Klass::cast(to_class)->external_name(); | |
| 195 // print in a single call to reduce interleaving between threads | |
| 196 if (source_file != NULL) { | |
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197 tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace); |
| 0 | 198 } else { |
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199 tty->print("RESOLVE %s %s (%s)\n", from, to, trace); |
| 0 | 200 } |
| 201 } | |
| 202 } | |
| 203 } | |
| 204 | |
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205 void trace_class_resolution(klassOop to_class) { |
| 0 | 206 EXCEPTION_MARK; |
| 207 trace_class_resolution_impl(to_class, THREAD); | |
| 208 if (HAS_PENDING_EXCEPTION) { | |
| 209 CLEAR_PENDING_EXCEPTION; | |
| 210 } | |
| 211 } | |
| 212 | |
| 213 // Wrapper to trace JVM functions | |
| 214 | |
| 215 #ifdef ASSERT | |
| 216 class JVMTraceWrapper : public StackObj { | |
| 217 public: | |
| 218 JVMTraceWrapper(const char* format, ...) { | |
| 219 if (TraceJVMCalls) { | |
| 220 va_list ap; | |
| 221 va_start(ap, format); | |
| 222 tty->print("JVM "); | |
| 223 tty->vprint_cr(format, ap); | |
| 224 va_end(ap); | |
| 225 } | |
| 226 } | |
| 227 }; | |
| 228 | |
| 229 Histogram* JVMHistogram; | |
| 230 volatile jint JVMHistogram_lock = 0; | |
| 231 | |
| 232 class JVMHistogramElement : public HistogramElement { | |
| 233 public: | |
| 234 JVMHistogramElement(const char* name); | |
| 235 }; | |
| 236 | |
| 237 JVMHistogramElement::JVMHistogramElement(const char* elementName) { | |
| 238 _name = elementName; | |
| 239 uintx count = 0; | |
| 240 | |
| 241 while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) { | |
| 242 while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) { | |
| 243 count +=1; | |
| 244 if ( (WarnOnStalledSpinLock > 0) | |
| 245 && (count % WarnOnStalledSpinLock == 0)) { | |
| 246 warning("JVMHistogram_lock seems to be stalled"); | |
| 247 } | |
| 248 } | |
| 249 } | |
| 250 | |
| 251 if(JVMHistogram == NULL) | |
| 252 JVMHistogram = new Histogram("JVM Call Counts",100); | |
| 253 | |
| 254 JVMHistogram->add_element(this); | |
| 255 Atomic::dec(&JVMHistogram_lock); | |
| 256 } | |
| 257 | |
| 258 #define JVMCountWrapper(arg) \ | |
| 259 static JVMHistogramElement* e = new JVMHistogramElement(arg); \ | |
| 260 if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen! | |
| 261 | |
| 262 #define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) | |
| 263 #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) | |
| 264 #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) | |
| 265 #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) | |
| 266 #else | |
| 267 #define JVMWrapper(arg1) | |
| 268 #define JVMWrapper2(arg1, arg2) | |
| 269 #define JVMWrapper3(arg1, arg2, arg3) | |
| 270 #define JVMWrapper4(arg1, arg2, arg3, arg4) | |
| 271 #endif | |
| 272 | |
| 273 | |
| 274 // Interface version ///////////////////////////////////////////////////////////////////// | |
| 275 | |
| 276 | |
| 277 JVM_LEAF(jint, JVM_GetInterfaceVersion()) | |
| 278 return JVM_INTERFACE_VERSION; | |
| 279 JVM_END | |
| 280 | |
| 281 | |
| 282 // java.lang.System ////////////////////////////////////////////////////////////////////// | |
| 283 | |
| 284 | |
| 285 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored)) | |
| 286 JVMWrapper("JVM_CurrentTimeMillis"); | |
| 287 return os::javaTimeMillis(); | |
| 288 JVM_END | |
| 289 | |
| 290 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored)) | |
| 291 JVMWrapper("JVM_NanoTime"); | |
| 292 return os::javaTimeNanos(); | |
| 293 JVM_END | |
| 294 | |
| 295 | |
| 296 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, | |
| 297 jobject dst, jint dst_pos, jint length)) | |
| 298 JVMWrapper("JVM_ArrayCopy"); | |
| 299 // Check if we have null pointers | |
| 300 if (src == NULL || dst == NULL) { | |
| 301 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 302 } | |
| 303 arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); | |
| 304 arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); | |
| 305 assert(s->is_oop(), "JVM_ArrayCopy: src not an oop"); | |
| 306 assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); | |
| 307 // Do copy | |
| 308 Klass::cast(s->klass())->copy_array(s, src_pos, d, dst_pos, length, thread); | |
| 309 JVM_END | |
| 310 | |
| 311 | |
| 312 static void set_property(Handle props, const char* key, const char* value, TRAPS) { | |
| 313 JavaValue r(T_OBJECT); | |
| 314 // public synchronized Object put(Object key, Object value); | |
| 315 HandleMark hm(THREAD); | |
| 316 Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK); | |
| 317 Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK); | |
| 318 JavaCalls::call_virtual(&r, | |
| 319 props, | |
| 1142 | 320 KlassHandle(THREAD, SystemDictionary::Properties_klass()), |
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321 vmSymbols::put_name(), |
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322 vmSymbols::object_object_object_signature(), |
| 0 | 323 key_str, |
| 324 value_str, | |
| 325 THREAD); | |
| 326 } | |
| 327 | |
| 328 | |
| 329 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties)); | |
| 330 | |
| 331 | |
| 332 JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties)) | |
| 333 JVMWrapper("JVM_InitProperties"); | |
| 334 ResourceMark rm; | |
| 335 | |
| 336 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
| 337 | |
| 338 // System property list includes both user set via -D option and | |
| 339 // jvm system specific properties. | |
| 340 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
| 341 PUTPROP(props, p->key(), p->value()); | |
| 342 } | |
| 343 | |
| 344 // Convert the -XX:MaxDirectMemorySize= command line flag | |
| 345 // to the sun.nio.MaxDirectMemorySize property. | |
| 346 // Do this after setting user properties to prevent people | |
| 347 // from setting the value with a -D option, as requested. | |
| 348 { | |
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349 if (FLAG_IS_DEFAULT(MaxDirectMemorySize)) { |
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350 PUTPROP(props, "sun.nio.MaxDirectMemorySize", "-1"); |
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351 } else { |
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352 char as_chars[256]; |
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353 jio_snprintf(as_chars, sizeof(as_chars), UINTX_FORMAT, MaxDirectMemorySize); |
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354 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); |
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355 } |
| 0 | 356 } |
| 357 | |
| 358 // JVM monitoring and management support | |
| 359 // Add the sun.management.compiler property for the compiler's name | |
| 360 { | |
| 361 #undef CSIZE | |
| 362 #if defined(_LP64) || defined(_WIN64) | |
| 363 #define CSIZE "64-Bit " | |
| 364 #else | |
| 365 #define CSIZE | |
| 366 #endif // 64bit | |
| 367 | |
| 368 #ifdef TIERED | |
| 369 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; | |
| 370 #else | |
| 371 #if defined(COMPILER1) | |
| 372 const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; | |
| 373 #elif defined(COMPILER2) | |
| 374 const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; | |
| 375 #else | |
| 376 const char* compiler_name = ""; | |
| 377 #endif // compilers | |
| 378 #endif // TIERED | |
| 379 | |
| 380 if (*compiler_name != '\0' && | |
| 381 (Arguments::mode() != Arguments::_int)) { | |
| 382 PUTPROP(props, "sun.management.compiler", compiler_name); | |
| 383 } | |
| 384 } | |
| 385 | |
| 386 return properties; | |
| 387 JVM_END | |
| 388 | |
| 389 | |
| 390 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// | |
| 391 | |
| 392 extern volatile jint vm_created; | |
| 393 | |
| 394 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
| 395 if (vm_created != 0 && (code == 0)) { | |
| 396 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
| 397 Universe::run_finalizers_on_exit(); | |
| 398 } | |
| 399 before_exit(thread); | |
| 400 vm_exit(code); | |
| 401 JVM_END | |
| 402 | |
| 403 | |
| 404 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
| 405 before_exit(thread); | |
| 406 vm_exit(code); | |
| 407 JVM_END | |
| 408 | |
| 409 | |
| 410 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
| 411 register_on_exit_function(func); | |
| 412 JVM_END | |
| 413 | |
| 414 | |
| 415 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
| 416 JVMWrapper("JVM_GC"); | |
| 417 if (!DisableExplicitGC) { | |
| 418 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
| 419 } | |
| 420 JVM_END | |
| 421 | |
| 422 | |
| 423 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
| 424 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
| 425 return Universe::heap()->millis_since_last_gc(); | |
| 426 JVM_END | |
| 427 | |
| 428 | |
| 429 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
| 430 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
| 431 JVM_END | |
| 432 | |
| 433 | |
| 434 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
| 435 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
| 436 JVM_END | |
| 437 | |
| 438 static inline jlong convert_size_t_to_jlong(size_t val) { | |
| 439 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
| 440 NOT_LP64 (return (jlong)val;) | |
| 441 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
| 442 } | |
| 443 | |
| 444 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
| 445 JVMWrapper("JVM_TotalMemory"); | |
| 446 size_t n = Universe::heap()->capacity(); | |
| 447 return convert_size_t_to_jlong(n); | |
| 448 JVM_END | |
| 449 | |
| 450 | |
| 451 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
| 452 JVMWrapper("JVM_FreeMemory"); | |
| 453 CollectedHeap* ch = Universe::heap(); | |
|
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454 size_t n; |
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455 { |
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456 MutexLocker x(Heap_lock); |
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457 n = ch->capacity() - ch->used(); |
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458 } |
| 0 | 459 return convert_size_t_to_jlong(n); |
| 460 JVM_END | |
| 461 | |
| 462 | |
| 463 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
| 464 JVMWrapper("JVM_MaxMemory"); | |
| 465 size_t n = Universe::heap()->max_capacity(); | |
| 466 return convert_size_t_to_jlong(n); | |
| 467 JVM_END | |
| 468 | |
| 469 | |
| 470 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
| 471 JVMWrapper("JVM_ActiveProcessorCount"); | |
| 472 return os::active_processor_count(); | |
| 473 JVM_END | |
| 474 | |
| 475 | |
| 476 | |
| 477 // java.lang.Throwable ////////////////////////////////////////////////////// | |
| 478 | |
| 479 | |
| 480 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
| 481 JVMWrapper("JVM_FillInStackTrace"); | |
| 482 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
| 483 java_lang_Throwable::fill_in_stack_trace(exception); | |
| 484 JVM_END | |
| 485 | |
| 486 | |
| 487 JVM_ENTRY(void, JVM_PrintStackTrace(JNIEnv *env, jobject receiver, jobject printable)) | |
| 488 JVMWrapper("JVM_PrintStackTrace"); | |
| 489 // Note: This is no longer used in Merlin, but we still support it for compatibility. | |
| 490 oop exception = JNIHandles::resolve_non_null(receiver); | |
| 491 oop stream = JNIHandles::resolve_non_null(printable); | |
| 492 java_lang_Throwable::print_stack_trace(exception, stream); | |
| 493 JVM_END | |
| 494 | |
| 495 | |
| 496 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
| 497 JVMWrapper("JVM_GetStackTraceDepth"); | |
| 498 oop exception = JNIHandles::resolve(throwable); | |
| 499 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
| 500 JVM_END | |
| 501 | |
| 502 | |
| 503 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
| 504 JVMWrapper("JVM_GetStackTraceElement"); | |
| 505 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
| 506 oop exception = JNIHandles::resolve(throwable); | |
| 507 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
| 508 return JNIHandles::make_local(env, element); | |
| 509 JVM_END | |
| 510 | |
| 511 | |
| 512 // java.lang.Object /////////////////////////////////////////////// | |
| 513 | |
| 514 | |
| 515 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
| 516 JVMWrapper("JVM_IHashCode"); | |
| 517 // as implemented in the classic virtual machine; return 0 if object is NULL | |
| 518 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
| 519 JVM_END | |
| 520 | |
| 521 | |
| 522 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
| 523 JVMWrapper("JVM_MonitorWait"); | |
| 524 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 525 assert(obj->is_instance() || obj->is_array(), "JVM_MonitorWait must apply to an object"); | |
| 526 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
| 527 if (JvmtiExport::should_post_monitor_wait()) { | |
| 528 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
| 529 } | |
| 530 ObjectSynchronizer::wait(obj, ms, CHECK); | |
| 531 JVM_END | |
| 532 | |
| 533 | |
| 534 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
| 535 JVMWrapper("JVM_MonitorNotify"); | |
| 536 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 537 assert(obj->is_instance() || obj->is_array(), "JVM_MonitorNotify must apply to an object"); | |
| 538 ObjectSynchronizer::notify(obj, CHECK); | |
| 539 JVM_END | |
| 540 | |
| 541 | |
| 542 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
| 543 JVMWrapper("JVM_MonitorNotifyAll"); | |
| 544 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 545 assert(obj->is_instance() || obj->is_array(), "JVM_MonitorNotifyAll must apply to an object"); | |
| 546 ObjectSynchronizer::notifyall(obj, CHECK); | |
| 547 JVM_END | |
| 548 | |
| 549 | |
| 550 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
| 551 JVMWrapper("JVM_Clone"); | |
| 552 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 553 const KlassHandle klass (THREAD, obj->klass()); | |
| 554 JvmtiVMObjectAllocEventCollector oam; | |
| 555 | |
| 556 #ifdef ASSERT | |
| 557 // Just checking that the cloneable flag is set correct | |
| 558 if (obj->is_javaArray()) { | |
| 559 guarantee(klass->is_cloneable(), "all arrays are cloneable"); | |
| 560 } else { | |
| 561 guarantee(obj->is_instance(), "should be instanceOop"); | |
| 1142 | 562 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
| 0 | 563 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
| 564 } | |
| 565 #endif | |
| 566 | |
| 567 // Check if class of obj supports the Cloneable interface. | |
| 568 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
| 569 if (!klass->is_cloneable()) { | |
| 570 ResourceMark rm(THREAD); | |
| 571 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
| 572 } | |
| 573 | |
| 574 // Make shallow object copy | |
| 575 const int size = obj->size(); | |
| 576 oop new_obj = NULL; | |
| 577 if (obj->is_javaArray()) { | |
| 578 const int length = ((arrayOop)obj())->length(); | |
| 579 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
| 580 } else { | |
| 581 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
| 582 } | |
| 583 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
| 584 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
| 585 // be suspended in the middle of copying the pointer and end up with parts | |
| 586 // of two different pointers in the field. Subsequent dereferences will crash. | |
| 587 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
| 588 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
| 589 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
| 590 // The same is true of StubRoutines::object_copy and the various oop_copy | |
| 591 // variants, and of the code generated by the inline_native_clone intrinsic. | |
| 592 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
| 593 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
| 594 (size_t)align_object_size(size) / HeapWordsPerLong); | |
| 595 // Clear the header | |
| 596 new_obj->init_mark(); | |
| 597 | |
| 598 // Store check (mark entire object and let gc sort it out) | |
| 599 BarrierSet* bs = Universe::heap()->barrier_set(); | |
| 600 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
| 601 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
| 602 | |
| 603 // Caution: this involves a java upcall, so the clone should be | |
| 604 // "gc-robust" by this stage. | |
| 605 if (klass->has_finalizer()) { | |
| 606 assert(obj->is_instance(), "should be instanceOop"); | |
| 607 new_obj = instanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); | |
| 608 } | |
| 609 | |
| 610 return JNIHandles::make_local(env, oop(new_obj)); | |
| 611 JVM_END | |
| 612 | |
| 613 // java.lang.Compiler //////////////////////////////////////////////////// | |
| 614 | |
| 615 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
| 616 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
| 617 // functions are all silently ignored unless JVM warnings are printed. | |
| 618 | |
| 619 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
| 620 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
| 621 JVM_END | |
| 622 | |
| 623 | |
| 624 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
| 625 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
| 626 return JNI_FALSE; | |
| 627 JVM_END | |
| 628 | |
| 629 | |
| 630 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
| 631 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
| 632 return JNI_FALSE; | |
| 633 JVM_END | |
| 634 | |
| 635 | |
| 636 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
| 637 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
| 638 return JNI_FALSE; | |
| 639 JVM_END | |
| 640 | |
| 641 | |
| 642 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
| 643 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
| 644 return NULL; | |
| 645 JVM_END | |
| 646 | |
| 647 | |
| 648 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
| 649 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
| 650 JVM_END | |
| 651 | |
| 652 | |
| 653 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
| 654 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
| 655 JVM_END | |
| 656 | |
| 657 | |
| 658 | |
| 659 // Error message support ////////////////////////////////////////////////////// | |
| 660 | |
| 661 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
| 662 JVMWrapper("JVM_GetLastErrorString"); | |
|
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663 return (jint)os::lasterror(buf, len); |
| 0 | 664 JVM_END |
| 665 | |
| 666 | |
| 667 // java.io.File /////////////////////////////////////////////////////////////// | |
| 668 | |
| 669 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
| 670 JVMWrapper2("JVM_NativePath (%s)", path); | |
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671 return os::native_path(path); |
| 0 | 672 JVM_END |
| 673 | |
| 674 | |
| 675 // Misc. class handling /////////////////////////////////////////////////////////// | |
| 676 | |
| 677 | |
| 678 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
| 679 JVMWrapper("JVM_GetCallerClass"); | |
| 680 klassOop k = thread->security_get_caller_class(depth); | |
| 681 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); | |
| 682 JVM_END | |
| 683 | |
| 684 | |
| 685 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
| 686 JVMWrapper("JVM_FindPrimitiveClass"); | |
| 687 oop mirror = NULL; | |
| 688 BasicType t = name2type(utf); | |
| 689 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
| 690 mirror = Universe::java_mirror(t); | |
| 691 } | |
| 692 if (mirror == NULL) { | |
| 693 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
| 694 } else { | |
| 695 return (jclass) JNIHandles::make_local(env, mirror); | |
| 696 } | |
| 697 JVM_END | |
| 698 | |
| 699 | |
| 700 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
| 701 JVMWrapper("JVM_ResolveClass"); | |
| 702 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
| 703 JVM_END | |
| 704 | |
|
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705 |
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706 // Returns a class loaded by the bootstrap class loader; or null |
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707 // if not found. ClassNotFoundException is not thrown. |
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708 // |
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709 // Rationale behind JVM_FindClassFromBootLoader |
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710 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
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711 // b> because of (a) java.dll has a direct dependecy on the unexported |
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712 // private symbol "_JVM_FindClassFromClassLoader@20". |
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713 // c> the launcher cannot use the private symbol as it dynamically opens |
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714 // the entry point, so if something changes, the launcher will fail |
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715 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
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716 // stable exported interface. |
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717 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
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718 // signature to change from _JVM_FindClassFromClassLoader@20 to |
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719 // JVM_FindClassFromClassLoader and will not be backward compatible |
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720 // with older JDKs. |
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721 // Thus a public/stable exported entry point is the right solution, |
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722 // public here means public in linker semantics, and is exported only |
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723 // to the JDK, and is not intended to be a public API. |
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724 |
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725 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
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726 const char* name)) |
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727 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
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728 |
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729 // Java libraries should ensure that name is never null... |
|
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730 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
|
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731 // It's impossible to create this class; the name cannot fit |
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732 // into the constant pool. |
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733 return NULL; |
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|
734 } |
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|
735 |
|
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736 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
|
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737 klassOop k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
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738 if (k == NULL) { |
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739 return NULL; |
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|
740 } |
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|
741 |
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|
742 if (TraceClassResolution) { |
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743 trace_class_resolution(k); |
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744 } |
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745 return (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); |
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746 JVM_END |
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747 |
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748 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
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749 jboolean init, jobject loader, |
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750 jboolean throwError)) |
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751 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
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752 throwError ? "error" : "exception"); |
| 388 | 753 // Java libraries should ensure that name is never null... |
|
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754 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
| 388 | 755 // It's impossible to create this class; the name cannot fit |
| 756 // into the constant pool. | |
| 757 if (throwError) { | |
| 758 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 759 } else { | |
| 760 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
| 761 } | |
| 762 } | |
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763 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
| 388 | 764 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
| 765 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 766 Handle(), throwError, THREAD); | |
| 767 | |
| 768 if (TraceClassResolution && result != NULL) { | |
| 769 trace_class_resolution(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(result))); | |
| 770 } | |
| 771 return result; | |
| 0 | 772 JVM_END |
| 773 | |
| 774 | |
| 775 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
| 776 jboolean init, jclass from)) | |
| 777 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
|
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778 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
| 0 | 779 // It's impossible to create this class; the name cannot fit |
| 780 // into the constant pool. | |
| 781 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 782 } | |
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783 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
| 0 | 784 oop from_class_oop = JNIHandles::resolve(from); |
| 785 klassOop from_class = (from_class_oop == NULL) | |
| 786 ? (klassOop)NULL | |
| 787 : java_lang_Class::as_klassOop(from_class_oop); | |
| 788 oop class_loader = NULL; | |
| 789 oop protection_domain = NULL; | |
| 790 if (from_class != NULL) { | |
| 791 class_loader = Klass::cast(from_class)->class_loader(); | |
| 792 protection_domain = Klass::cast(from_class)->protection_domain(); | |
| 793 } | |
| 794 Handle h_loader(THREAD, class_loader); | |
| 795 Handle h_prot (THREAD, protection_domain); | |
| 796 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 797 h_prot, true, thread); | |
| 798 | |
| 799 if (TraceClassResolution && result != NULL) { | |
| 800 // this function is generally only used for class loading during verification. | |
| 801 ResourceMark rm; | |
| 802 oop from_mirror = JNIHandles::resolve_non_null(from); | |
| 803 klassOop from_class = java_lang_Class::as_klassOop(from_mirror); | |
| 804 const char * from_name = Klass::cast(from_class)->external_name(); | |
| 805 | |
| 806 oop mirror = JNIHandles::resolve_non_null(result); | |
| 807 klassOop to_class = java_lang_Class::as_klassOop(mirror); | |
| 808 const char * to = Klass::cast(to_class)->external_name(); | |
| 809 tty->print("RESOLVE %s %s (verification)\n", from_name, to); | |
| 810 } | |
| 811 | |
| 812 return result; | |
| 813 JVM_END | |
| 814 | |
| 815 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
| 816 if (loader.is_null()) { | |
| 817 return; | |
| 818 } | |
| 819 | |
| 820 // check whether the current caller thread holds the lock or not. | |
| 821 // If not, increment the corresponding counter | |
| 822 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
| 823 ObjectSynchronizer::owner_self) { | |
| 824 counter->inc(); | |
| 825 } | |
| 826 } | |
| 827 | |
| 828 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
|
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829 // and JVM_DefineClassWithSourceCond() |
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830 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
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831 jobject loader, const jbyte *buf, |
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832 jsize len, jobject pd, const char *source, |
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833 jboolean verify, TRAPS) { |
|
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834 if (source == NULL) source = "__JVM_DefineClass__"; |
| 0 | 835 |
|
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836 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
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837 JavaThread* jt = (JavaThread*) THREAD; |
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838 |
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839 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
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840 ClassLoader::perf_define_appclass_selftime(), |
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841 ClassLoader::perf_define_appclasses(), |
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842 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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843 jt->get_thread_stat()->perf_timers_addr(), |
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844 PerfClassTraceTime::DEFINE_CLASS); |
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845 |
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846 if (UsePerfData) { |
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847 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
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848 } |
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849 |
| 0 | 850 // Since exceptions can be thrown, class initialization can take place |
| 851 // if name is NULL no check for class name in .class stream has to be made. | |
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852 TempNewSymbol class_name = NULL; |
| 0 | 853 if (name != NULL) { |
| 854 const int str_len = (int)strlen(name); | |
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855 if (str_len > Symbol::max_length()) { |
| 0 | 856 // It's impossible to create this class; the name cannot fit |
| 857 // into the constant pool. | |
| 858 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 859 } | |
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860 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
| 0 | 861 } |
| 862 | |
| 863 ResourceMark rm(THREAD); | |
| 864 ClassFileStream st((u1*) buf, len, (char *)source); | |
| 865 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
| 866 if (UsePerfData) { | |
| 867 is_lock_held_by_thread(class_loader, | |
| 868 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
| 869 THREAD); | |
| 870 } | |
| 871 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
| 872 klassOop k = SystemDictionary::resolve_from_stream(class_name, class_loader, | |
| 873 protection_domain, &st, | |
|
973
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874 verify != 0, |
| 0 | 875 CHECK_NULL); |
| 876 | |
| 877 if (TraceClassResolution && k != NULL) { | |
| 878 trace_class_resolution(k); | |
| 879 } | |
| 880 | |
| 881 return (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); | |
| 882 } | |
| 883 | |
| 884 | |
| 885 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
| 886 JVMWrapper2("JVM_DefineClass %s", name); | |
| 887 | |
|
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888 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
| 0 | 889 JVM_END |
| 890 | |
| 891 | |
| 892 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
| 893 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
| 894 | |
|
973
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895 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
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896 JVM_END |
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897 |
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898 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
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899 jobject loader, const jbyte *buf, |
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900 jsize len, jobject pd, |
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901 const char *source, jboolean verify)) |
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902 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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903 |
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904 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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905 JVM_END |
| 0 | 906 |
| 907 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
| 908 JVMWrapper("JVM_FindLoadedClass"); | |
| 909 ResourceMark rm(THREAD); | |
| 910 | |
| 911 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 912 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
| 913 | |
| 914 const char* str = java_lang_String::as_utf8_string(string()); | |
| 915 // Sanity check, don't expect null | |
| 916 if (str == NULL) return NULL; | |
| 917 | |
| 918 const int str_len = (int)strlen(str); | |
|
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919 if (str_len > Symbol::max_length()) { |
| 0 | 920 // It's impossible to create this class; the name cannot fit |
| 921 // into the constant pool. | |
| 922 return NULL; | |
| 923 } | |
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924 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
| 0 | 925 |
| 926 // Security Note: | |
| 927 // The Java level wrapper will perform the necessary security check allowing | |
| 928 // us to pass the NULL as the initiating class loader. | |
| 929 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
| 930 if (UsePerfData) { | |
| 931 is_lock_held_by_thread(h_loader, | |
| 932 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
| 933 THREAD); | |
| 934 } | |
| 935 | |
| 936 klassOop k = SystemDictionary::find_instance_or_array_klass(klass_name, | |
| 937 h_loader, | |
| 938 Handle(), | |
| 939 CHECK_NULL); | |
| 940 | |
| 941 return (k == NULL) ? NULL : | |
| 942 (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); | |
| 943 JVM_END | |
| 944 | |
| 945 | |
| 946 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
| 947 | |
| 948 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
| 949 assert (cls != NULL, "illegal class"); | |
| 950 JVMWrapper("JVM_GetClassName"); | |
| 951 JvmtiVMObjectAllocEventCollector oam; | |
| 952 ResourceMark rm(THREAD); | |
| 953 const char* name; | |
| 954 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 955 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
| 956 } else { | |
| 957 // Consider caching interned string in Klass | |
| 958 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
| 959 assert(k->is_klass(), "just checking"); | |
| 960 name = Klass::cast(k)->external_name(); | |
| 961 } | |
| 962 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
| 963 return (jstring) JNIHandles::make_local(env, result); | |
| 964 JVM_END | |
| 965 | |
| 966 | |
| 967 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
| 968 JVMWrapper("JVM_GetClassInterfaces"); | |
| 969 JvmtiVMObjectAllocEventCollector oam; | |
| 970 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 971 | |
| 972 // Special handling for primitive objects | |
| 973 if (java_lang_Class::is_primitive(mirror)) { | |
| 974 // Primitive objects does not have any interfaces | |
| 1142 | 975 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 976 return (jobjectArray) JNIHandles::make_local(env, r); |
| 977 } | |
| 978 | |
| 979 KlassHandle klass(thread, java_lang_Class::as_klassOop(mirror)); | |
| 980 // Figure size of result array | |
| 981 int size; | |
| 982 if (klass->oop_is_instance()) { | |
| 983 size = instanceKlass::cast(klass())->local_interfaces()->length(); | |
| 984 } else { | |
| 985 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
| 986 size = 2; | |
| 987 } | |
| 988 | |
| 989 // Allocate result array | |
| 1142 | 990 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
| 0 | 991 objArrayHandle result (THREAD, r); |
| 992 // Fill in result | |
| 993 if (klass->oop_is_instance()) { | |
| 994 // Regular instance klass, fill in all local interfaces | |
| 995 for (int index = 0; index < size; index++) { | |
| 996 klassOop k = klassOop(instanceKlass::cast(klass())->local_interfaces()->obj_at(index)); | |
| 997 result->obj_at_put(index, Klass::cast(k)->java_mirror()); | |
| 998 } | |
| 999 } else { | |
| 1000 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
| 1142 | 1001 result->obj_at_put(0, Klass::cast(SystemDictionary::Cloneable_klass())->java_mirror()); |
| 1002 result->obj_at_put(1, Klass::cast(SystemDictionary::Serializable_klass())->java_mirror()); | |
| 0 | 1003 } |
| 1004 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1005 JVM_END | |
| 1006 | |
| 1007 | |
| 1008 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
| 1009 JVMWrapper("JVM_GetClassLoader"); | |
| 1010 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1011 return NULL; | |
| 1012 } | |
| 1013 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 1014 oop loader = Klass::cast(k)->class_loader(); | |
| 1015 return JNIHandles::make_local(env, loader); | |
| 1016 JVM_END | |
| 1017 | |
| 1018 | |
| 1019 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
| 1020 JVMWrapper("JVM_IsInterface"); | |
| 1021 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1022 if (java_lang_Class::is_primitive(mirror)) { | |
| 1023 return JNI_FALSE; | |
| 1024 } | |
| 1025 klassOop k = java_lang_Class::as_klassOop(mirror); | |
| 1026 jboolean result = Klass::cast(k)->is_interface(); | |
| 1027 assert(!result || Klass::cast(k)->oop_is_instance(), | |
| 1028 "all interfaces are instance types"); | |
| 1029 // The compiler intrinsic for isInterface tests the | |
| 1030 // Klass::_access_flags bits in the same way. | |
| 1031 return result; | |
| 1032 JVM_END | |
| 1033 | |
| 1034 | |
| 1035 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
| 1036 JVMWrapper("JVM_GetClassSigners"); | |
| 1037 JvmtiVMObjectAllocEventCollector oam; | |
| 1038 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1039 // There are no signers for primitive types | |
| 1040 return NULL; | |
| 1041 } | |
| 1042 | |
| 1043 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 1044 objArrayOop signers = NULL; | |
| 1045 if (Klass::cast(k)->oop_is_instance()) { | |
| 1046 signers = instanceKlass::cast(k)->signers(); | |
| 1047 } | |
| 1048 | |
| 1049 // If there are no signers set in the class, or if the class | |
| 1050 // is an array, return NULL. | |
| 1051 if (signers == NULL) return NULL; | |
| 1052 | |
| 1053 // copy of the signers array | |
| 1054 klassOop element = objArrayKlass::cast(signers->klass())->element_klass(); | |
| 1055 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); | |
| 1056 for (int index = 0; index < signers->length(); index++) { | |
| 1057 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
| 1058 } | |
| 1059 | |
| 1060 // return the copy | |
| 1061 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
| 1062 JVM_END | |
| 1063 | |
| 1064 | |
| 1065 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
| 1066 JVMWrapper("JVM_SetClassSigners"); | |
| 1067 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1068 // This call is ignored for primitive types and arrays. | |
| 1069 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
| 1070 // be called with an array. Only the bootstrap loader creates arrays. | |
| 1071 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 1072 if (Klass::cast(k)->oop_is_instance()) { | |
| 1073 instanceKlass::cast(k)->set_signers(objArrayOop(JNIHandles::resolve(signers))); | |
| 1074 } | |
| 1075 } | |
| 1076 JVM_END | |
| 1077 | |
| 1078 | |
| 1079 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
| 1080 JVMWrapper("JVM_GetProtectionDomain"); | |
| 1081 if (JNIHandles::resolve(cls) == NULL) { | |
| 1082 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
| 1083 } | |
| 1084 | |
| 1085 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1086 // Primitive types does not have a protection domain. | |
| 1087 return NULL; | |
| 1088 } | |
| 1089 | |
| 1090 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
| 1091 return (jobject) JNIHandles::make_local(env, Klass::cast(k)->protection_domain()); | |
| 1092 JVM_END | |
| 1093 | |
| 1094 | |
| 1095 // Obsolete since 1.2 (Class.setProtectionDomain removed), although | |
| 1096 // still defined in core libraries as of 1.5. | |
| 1097 JVM_ENTRY(void, JVM_SetProtectionDomain(JNIEnv *env, jclass cls, jobject protection_domain)) | |
| 1098 JVMWrapper("JVM_SetProtectionDomain"); | |
| 1099 if (JNIHandles::resolve(cls) == NULL) { | |
| 1100 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 1101 } | |
| 1102 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1103 // Call is ignored for primitive types | |
| 1104 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
| 1105 | |
| 1106 // cls won't be an array, as this called only from ClassLoader.defineClass | |
| 1107 if (Klass::cast(k)->oop_is_instance()) { | |
| 1108 oop pd = JNIHandles::resolve(protection_domain); | |
| 1109 assert(pd == NULL || pd->is_oop(), "just checking"); | |
| 1110 instanceKlass::cast(k)->set_protection_domain(pd); | |
| 1111 } | |
| 1112 } | |
| 1113 JVM_END | |
| 1114 | |
| 1115 | |
| 1116 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
| 1117 JVMWrapper("JVM_DoPrivileged"); | |
| 1118 | |
| 1119 if (action == NULL) { | |
| 1120 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
| 1121 } | |
| 1122 | |
| 1123 // Stack allocated list of privileged stack elements | |
| 1124 PrivilegedElement pi; | |
| 1125 | |
| 1126 // Check that action object understands "Object run()" | |
| 1127 Handle object (THREAD, JNIHandles::resolve(action)); | |
| 1128 | |
| 1129 // get run() method | |
| 1130 methodOop m_oop = Klass::cast(object->klass())->uncached_lookup_method( | |
| 1131 vmSymbols::run_method_name(), | |
| 1132 vmSymbols::void_object_signature()); | |
| 1133 methodHandle m (THREAD, m_oop); | |
| 1134 if (m.is_null() || !m->is_method() || !methodOop(m())->is_public() || methodOop(m())->is_static()) { | |
| 1135 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); | |
| 1136 } | |
| 1137 | |
| 1138 // Compute the frame initiating the do privileged operation and setup the privileged stack | |
| 1139 vframeStream vfst(thread); | |
| 1140 vfst.security_get_caller_frame(1); | |
| 1141 | |
| 1142 if (!vfst.at_end()) { | |
| 1143 pi.initialize(&vfst, JNIHandles::resolve(context), thread->privileged_stack_top(), CHECK_NULL); | |
| 1144 thread->set_privileged_stack_top(&pi); | |
| 1145 } | |
| 1146 | |
| 1147 | |
| 1148 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
| 1149 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
| 1150 Handle pending_exception; | |
| 1151 JavaValue result(T_OBJECT); | |
| 1152 JavaCallArguments args(object); | |
| 1153 JavaCalls::call(&result, m, &args, THREAD); | |
| 1154 | |
| 1155 // done with action, remove ourselves from the list | |
| 1156 if (!vfst.at_end()) { | |
| 1157 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
| 1158 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
| 1159 } | |
| 1160 | |
| 1161 if (HAS_PENDING_EXCEPTION) { | |
| 1162 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
| 1163 CLEAR_PENDING_EXCEPTION; | |
| 1164 | |
| 1142 | 1165 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
| 1166 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
| 0 | 1167 // Throw a java.security.PrivilegedActionException(Exception e) exception |
| 1168 JavaCallArguments args(pending_exception); | |
|
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1169 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1170 vmSymbols::exception_void_signature(), |
| 0 | 1171 &args); |
| 1172 } | |
| 1173 } | |
| 1174 | |
| 1175 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
| 1176 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
| 1177 JVM_END | |
| 1178 | |
| 1179 | |
| 1180 // Returns the inherited_access_control_context field of the running thread. | |
| 1181 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1182 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
| 1183 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
| 1184 return JNIHandles::make_local(env, result); | |
| 1185 JVM_END | |
| 1186 | |
| 1187 class RegisterArrayForGC { | |
| 1188 private: | |
| 1189 JavaThread *_thread; | |
| 1190 public: | |
| 1191 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
| 1192 _thread = thread; | |
| 1193 _thread->register_array_for_gc(array); | |
| 1194 } | |
| 1195 | |
| 1196 ~RegisterArrayForGC() { | |
| 1197 _thread->register_array_for_gc(NULL); | |
| 1198 } | |
| 1199 }; | |
| 1200 | |
| 1201 | |
| 1202 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1203 JVMWrapper("JVM_GetStackAccessControlContext"); | |
| 1204 if (!UsePrivilegedStack) return NULL; | |
| 1205 | |
| 1206 ResourceMark rm(THREAD); | |
| 1207 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
| 1208 JvmtiVMObjectAllocEventCollector oam; | |
| 1209 | |
| 1210 // count the protection domains on the execution stack. We collapse | |
| 1211 // duplicate consecutive protection domains into a single one, as | |
| 1212 // well as stopping when we hit a privileged frame. | |
| 1213 | |
| 1214 // Use vframeStream to iterate through Java frames | |
| 1215 vframeStream vfst(thread); | |
| 1216 | |
| 1217 oop previous_protection_domain = NULL; | |
| 1218 Handle privileged_context(thread, NULL); | |
| 1219 bool is_privileged = false; | |
| 1220 oop protection_domain = NULL; | |
| 1221 | |
| 1222 for(; !vfst.at_end(); vfst.next()) { | |
| 1223 // get method of frame | |
| 1224 methodOop method = vfst.method(); | |
| 1225 intptr_t* frame_id = vfst.frame_id(); | |
| 1226 | |
| 1227 // check the privileged frames to see if we have a match | |
| 1228 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
| 1229 // this frame is privileged | |
| 1230 is_privileged = true; | |
| 1231 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
| 1232 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
| 1233 } else { | |
| 1234 protection_domain = instanceKlass::cast(method->method_holder())->protection_domain(); | |
| 1235 } | |
| 1236 | |
| 1237 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
| 1238 local_array->push(protection_domain); | |
| 1239 previous_protection_domain = protection_domain; | |
| 1240 } | |
| 1241 | |
| 1242 if (is_privileged) break; | |
| 1243 } | |
| 1244 | |
| 1245 | |
| 1246 // either all the domains on the stack were system domains, or | |
| 1247 // we had a privileged system domain | |
| 1248 if (local_array->is_empty()) { | |
| 1249 if (is_privileged && privileged_context.is_null()) return NULL; | |
| 1250 | |
| 1251 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
| 1252 return JNIHandles::make_local(env, result); | |
| 1253 } | |
| 1254 | |
| 1255 // the resource area must be registered in case of a gc | |
| 1256 RegisterArrayForGC ragc(thread, local_array); | |
| 1142 | 1257 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
| 0 | 1258 local_array->length(), CHECK_NULL); |
| 1259 objArrayHandle h_context(thread, context); | |
| 1260 for (int index = 0; index < local_array->length(); index++) { | |
| 1261 h_context->obj_at_put(index, local_array->at(index)); | |
| 1262 } | |
| 1263 | |
| 1264 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
| 1265 | |
| 1266 return JNIHandles::make_local(env, result); | |
| 1267 JVM_END | |
| 1268 | |
| 1269 | |
| 1270 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
| 1271 JVMWrapper("JVM_IsArrayClass"); | |
| 1272 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 1273 return (k != NULL) && Klass::cast(k)->oop_is_javaArray() ? true : false; | |
| 1274 JVM_END | |
| 1275 | |
| 1276 | |
| 1277 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
| 1278 JVMWrapper("JVM_IsPrimitiveClass"); | |
| 1279 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1280 return (jboolean) java_lang_Class::is_primitive(mirror); | |
| 1281 JVM_END | |
| 1282 | |
| 1283 | |
| 1284 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
| 1285 JVMWrapper("JVM_GetComponentType"); | |
| 1286 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1287 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
| 1288 return (jclass) JNIHandles::make_local(env, result); | |
| 1289 JVM_END | |
| 1290 | |
| 1291 | |
| 1292 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
| 1293 JVMWrapper("JVM_GetClassModifiers"); | |
| 1294 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1295 // Primitive type | |
| 1296 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 1297 } | |
| 1298 | |
| 1299 Klass* k = Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls))); | |
| 1300 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); | |
| 1301 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
| 1302 return k->modifier_flags(); | |
| 1303 JVM_END | |
| 1304 | |
| 1305 | |
| 1306 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
| 1307 | |
| 1308 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
| 1309 JvmtiVMObjectAllocEventCollector oam; | |
| 1310 // ofClass is a reference to a java_lang_Class object. The mirror object | |
| 1311 // of an instanceKlass | |
| 1312 | |
| 1313 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 1314 ! Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_instance()) { | |
| 1142 | 1315 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1316 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1317 } | |
| 1318 | |
| 1319 instanceKlassHandle k(thread, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
|
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1320 InnerClassesIterator iter(k); |
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1321 |
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1322 if (iter.length() == 0) { |
| 0 | 1323 // Neither an inner nor outer class |
| 1142 | 1324 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1325 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1326 } | |
| 1327 | |
| 1328 // find inner class info | |
| 1329 constantPoolHandle cp(thread, k->constants()); | |
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1330 int length = iter.length(); |
| 0 | 1331 |
| 1332 // Allocate temp. result array | |
| 1142 | 1333 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
| 0 | 1334 objArrayHandle result (THREAD, r); |
| 1335 int members = 0; | |
| 1336 | |
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1337 for (; !iter.done(); iter.next()) { |
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1338 int ioff = iter.inner_class_info_index(); |
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1339 int ooff = iter.outer_class_info_index(); |
| 0 | 1340 |
| 1341 if (ioff != 0 && ooff != 0) { | |
| 1342 // Check to see if the name matches the class we're looking for | |
| 1343 // before attempting to find the class. | |
| 1344 if (cp->klass_name_at_matches(k, ooff)) { | |
| 1345 klassOop outer_klass = cp->klass_at(ooff, CHECK_NULL); | |
| 1346 if (outer_klass == k()) { | |
| 1347 klassOop ik = cp->klass_at(ioff, CHECK_NULL); | |
| 1348 instanceKlassHandle inner_klass (THREAD, ik); | |
| 1349 | |
| 1350 // Throws an exception if outer klass has not declared k as | |
| 1351 // an inner klass | |
|
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1352 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
| 0 | 1353 |
| 1354 result->obj_at_put(members, inner_klass->java_mirror()); | |
| 1355 members++; | |
| 1356 } | |
| 1357 } | |
| 1358 } | |
| 1359 } | |
| 1360 | |
| 1361 if (members != length) { | |
| 1362 // Return array of right length | |
| 1142 | 1363 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
| 0 | 1364 for(int i = 0; i < members; i++) { |
| 1365 res->obj_at_put(i, result->obj_at(i)); | |
| 1366 } | |
| 1367 return (jobjectArray)JNIHandles::make_local(env, res); | |
| 1368 } | |
| 1369 | |
| 1370 return (jobjectArray)JNIHandles::make_local(env, result()); | |
| 1371 JVM_END | |
| 1372 | |
| 1373 | |
| 1374 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
|
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1375 { |
| 0 | 1376 // ofClass is a reference to a java_lang_Class object. |
| 1377 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 1378 ! Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_instance()) { | |
| 1379 return NULL; | |
| 1380 } | |
| 1381 | |
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1382 bool inner_is_member = false; |
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1383 klassOop outer_klass |
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1384 = instanceKlass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)) |
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1385 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
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1386 if (outer_klass == NULL) return NULL; // already a top-level class |
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1387 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
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1388 return (jclass) JNIHandles::make_local(env, Klass::cast(outer_klass)->java_mirror()); |
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1389 } |
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1390 JVM_END |
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1391 |
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1392 // should be in instanceKlass.cpp, but is here for historical reasons |
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1393 klassOop instanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
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1394 bool* inner_is_member, |
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1395 TRAPS) { |
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1396 Thread* thread = THREAD; |
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1397 InnerClassesIterator iter(k); |
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1398 if (iter.length() == 0) { |
| 0 | 1399 // No inner class info => no declaring class |
| 1400 return NULL; | |
| 1401 } | |
| 1402 | |
| 1403 constantPoolHandle i_cp(thread, k->constants()); | |
| 1404 | |
| 1405 bool found = false; | |
| 1406 klassOop ok; | |
| 1407 instanceKlassHandle outer_klass; | |
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1408 *inner_is_member = false; |
| 0 | 1409 |
| 1410 // Find inner_klass attribute | |
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1411 for (; !iter.done() && !found; iter.next()) { |
|
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1412 int ioff = iter.inner_class_info_index(); |
|
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1413 int ooff = iter.outer_class_info_index(); |
|
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1414 int noff = iter.inner_name_index(); |
|
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1415 if (ioff != 0) { |
| 0 | 1416 // Check to see if the name matches the class we're looking for |
| 1417 // before attempting to find the class. | |
| 1418 if (i_cp->klass_name_at_matches(k, ioff)) { | |
| 1419 klassOop inner_klass = i_cp->klass_at(ioff, CHECK_NULL); | |
|
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1420 found = (k() == inner_klass); |
|
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1421 if (found && ooff != 0) { |
| 0 | 1422 ok = i_cp->klass_at(ooff, CHECK_NULL); |
| 1423 outer_klass = instanceKlassHandle(thread, ok); | |
|
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|
1424 *inner_is_member = true; |
| 0 | 1425 } |
| 1426 } | |
| 1427 } | |
| 1428 } | |
| 1429 | |
|
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|
1430 if (found && outer_klass.is_null()) { |
|
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|
1431 // It may be anonymous; try for that. |
|
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|
1432 int encl_method_class_idx = k->enclosing_method_class_index(); |
|
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|
1433 if (encl_method_class_idx != 0) { |
|
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|
1434 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
|
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|
1435 outer_klass = instanceKlassHandle(thread, ok); |
|
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|
1436 *inner_is_member = false; |
|
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|
1437 } |
|
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|
1438 } |
|
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|
1439 |
| 0 | 1440 // If no inner class attribute found for this class. |
|
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|
1441 if (outer_klass.is_null()) return NULL; |
| 0 | 1442 |
| 1443 // Throws an exception if outer klass has not declared k as an inner klass | |
|
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|
1444 // We need evidence that each klass knows about the other, or else |
|
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1445 // the system could allow a spoof of an inner class to gain access rights. |
|
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|
1446 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
|
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|
1447 return outer_klass(); |
|
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|
1448 } |
| 0 | 1449 |
| 1450 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
| 1451 assert (cls != NULL, "illegal class"); | |
| 1452 JVMWrapper("JVM_GetClassSignature"); | |
| 1453 JvmtiVMObjectAllocEventCollector oam; | |
| 1454 ResourceMark rm(THREAD); | |
| 1455 // Return null for arrays and primatives | |
| 1456 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1457 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
| 1458 if (Klass::cast(k)->oop_is_instance()) { | |
|
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|
1459 Symbol* sym = instanceKlass::cast(k)->generic_signature(); |
|
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|
1460 if (sym == NULL) return NULL; |
| 0 | 1461 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 1462 return (jstring) JNIHandles::make_local(env, str()); | |
| 1463 } | |
| 1464 } | |
| 1465 return NULL; | |
| 1466 JVM_END | |
| 1467 | |
| 1468 | |
| 1469 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
| 1470 assert (cls != NULL, "illegal class"); | |
| 1471 JVMWrapper("JVM_GetClassAnnotations"); | |
| 1472 ResourceMark rm(THREAD); | |
| 1473 // Return null for arrays and primitives | |
| 1474 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1475 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
| 1476 if (Klass::cast(k)->oop_is_instance()) { | |
| 1477 return (jbyteArray) JNIHandles::make_local(env, | |
| 1478 instanceKlass::cast(k)->class_annotations()); | |
| 1479 } | |
| 1480 } | |
| 1481 return NULL; | |
| 1482 JVM_END | |
| 1483 | |
| 1484 | |
| 1485 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) | |
| 1486 assert(field != NULL, "illegal field"); | |
| 1487 JVMWrapper("JVM_GetFieldAnnotations"); | |
| 1488 | |
| 1489 // some of this code was adapted from from jni_FromReflectedField | |
| 1490 | |
| 1491 // field is a handle to a java.lang.reflect.Field object | |
| 1492 oop reflected = JNIHandles::resolve_non_null(field); | |
| 1493 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
| 1494 klassOop k = java_lang_Class::as_klassOop(mirror); | |
| 1495 int slot = java_lang_reflect_Field::slot(reflected); | |
| 1496 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
| 1497 | |
| 1498 fieldDescriptor fd; | |
| 1499 KlassHandle kh(THREAD, k); | |
| 3938 | 1500 intptr_t offset = instanceKlass::cast(kh())->field_offset(slot); |
| 0 | 1501 |
| 1502 if (modifiers & JVM_ACC_STATIC) { | |
| 1503 // for static fields we only look in the current class | |
| 1504 if (!instanceKlass::cast(kh())->find_local_field_from_offset(offset, | |
| 1505 true, &fd)) { | |
| 1506 assert(false, "cannot find static field"); | |
| 1507 return NULL; // robustness | |
| 1508 } | |
| 1509 } else { | |
| 1510 // for instance fields we start with the current class and work | |
| 1511 // our way up through the superclass chain | |
| 1512 if (!instanceKlass::cast(kh())->find_field_from_offset(offset, false, | |
| 1513 &fd)) { | |
| 1514 assert(false, "cannot find instance field"); | |
| 1515 return NULL; // robustness | |
| 1516 } | |
| 1517 } | |
| 1518 | |
| 1519 return (jbyteArray) JNIHandles::make_local(env, fd.annotations()); | |
| 1520 JVM_END | |
| 1521 | |
| 1522 | |
| 1523 static methodOop jvm_get_method_common(jobject method, TRAPS) { | |
| 1524 // some of this code was adapted from from jni_FromReflectedMethod | |
| 1525 | |
| 1526 oop reflected = JNIHandles::resolve_non_null(method); | |
| 1527 oop mirror = NULL; | |
| 1528 int slot = 0; | |
| 1529 | |
| 1142 | 1530 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
| 0 | 1531 mirror = java_lang_reflect_Constructor::clazz(reflected); |
| 1532 slot = java_lang_reflect_Constructor::slot(reflected); | |
| 1533 } else { | |
| 1142 | 1534 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
| 0 | 1535 "wrong type"); |
| 1536 mirror = java_lang_reflect_Method::clazz(reflected); | |
| 1537 slot = java_lang_reflect_Method::slot(reflected); | |
| 1538 } | |
| 1539 klassOop k = java_lang_Class::as_klassOop(mirror); | |
| 1540 | |
| 1541 KlassHandle kh(THREAD, k); | |
| 1542 methodOop m = instanceKlass::cast(kh())->method_with_idnum(slot); | |
| 1543 if (m == NULL) { | |
| 1544 assert(false, "cannot find method"); | |
| 1545 return NULL; // robustness | |
| 1546 } | |
| 1547 | |
| 1548 return m; | |
| 1549 } | |
| 1550 | |
| 1551 | |
| 1552 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
| 1553 JVMWrapper("JVM_GetMethodAnnotations"); | |
| 1554 | |
| 1555 // method is a handle to a java.lang.reflect.Method object | |
| 1556 methodOop m = jvm_get_method_common(method, CHECK_NULL); | |
| 1557 return (jbyteArray) JNIHandles::make_local(env, m->annotations()); | |
| 1558 JVM_END | |
| 1559 | |
| 1560 | |
| 1561 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
| 1562 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
| 1563 | |
| 1564 // method is a handle to a java.lang.reflect.Method object | |
| 1565 methodOop m = jvm_get_method_common(method, CHECK_NULL); | |
| 1566 return (jbyteArray) JNIHandles::make_local(env, m->annotation_default()); | |
| 1567 JVM_END | |
| 1568 | |
| 1569 | |
| 1570 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
| 1571 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
| 1572 | |
| 1573 // method is a handle to a java.lang.reflect.Method object | |
| 1574 methodOop m = jvm_get_method_common(method, CHECK_NULL); | |
| 1575 return (jbyteArray) JNIHandles::make_local(env, m->parameter_annotations()); | |
| 1576 JVM_END | |
| 1577 | |
| 1578 | |
| 1579 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
| 1580 | |
| 1581 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1582 { | |
| 1583 JVMWrapper("JVM_GetClassDeclaredFields"); | |
| 1584 JvmtiVMObjectAllocEventCollector oam; | |
| 1585 | |
| 1586 // Exclude primitive types and array types | |
| 1587 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 1588 Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { | |
| 1589 // Return empty array | |
| 1142 | 1590 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
| 0 | 1591 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1592 } | |
| 1593 | |
| 1594 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
| 1595 constantPoolHandle cp(THREAD, k->constants()); | |
| 1596 | |
| 1597 // Ensure class is linked | |
| 1598 k->link_class(CHECK_NULL); | |
| 1599 | |
| 1600 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
| 1601 bool skip_backtrace = false; | |
| 1602 | |
| 1603 // Allocate result | |
| 1604 int num_fields; | |
| 1605 | |
| 1606 if (publicOnly) { | |
| 1607 num_fields = 0; | |
| 3938 | 1608 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
| 1609 if (fs.access_flags().is_public()) ++num_fields; | |
| 0 | 1610 } |
| 1611 } else { | |
| 3938 | 1612 num_fields = k->java_fields_count(); |
| 0 | 1613 |
| 1142 | 1614 if (k() == SystemDictionary::Throwable_klass()) { |
| 0 | 1615 num_fields--; |
| 1616 skip_backtrace = true; | |
| 1617 } | |
| 1618 } | |
| 1619 | |
| 1142 | 1620 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
| 0 | 1621 objArrayHandle result (THREAD, r); |
| 1622 | |
| 1623 int out_idx = 0; | |
| 1624 fieldDescriptor fd; | |
| 3938 | 1625 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
| 0 | 1626 if (skip_backtrace) { |
| 1627 // 4496456 skip java.lang.Throwable.backtrace | |
| 3938 | 1628 int offset = fs.offset(); |
| 0 | 1629 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
| 1630 } | |
| 1631 | |
| 3938 | 1632 if (!publicOnly || fs.access_flags().is_public()) { |
| 1633 fd.initialize(k(), fs.index()); | |
| 0 | 1634 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
| 1635 result->obj_at_put(out_idx, field); | |
| 1636 ++out_idx; | |
| 1637 } | |
| 1638 } | |
| 1639 assert(out_idx == num_fields, "just checking"); | |
| 1640 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1641 } | |
| 1642 JVM_END | |
| 1643 | |
| 1644 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1645 { | |
| 1646 JVMWrapper("JVM_GetClassDeclaredMethods"); | |
| 1647 JvmtiVMObjectAllocEventCollector oam; | |
| 1648 | |
| 1649 // Exclude primitive types and array types | |
| 1650 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
| 1651 || Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { | |
| 1652 // Return empty array | |
| 1142 | 1653 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), 0, CHECK_NULL); |
| 0 | 1654 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1655 } | |
| 1656 | |
| 1657 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
| 1658 | |
| 1659 // Ensure class is linked | |
| 1660 k->link_class(CHECK_NULL); | |
| 1661 | |
| 1662 objArrayHandle methods (THREAD, k->methods()); | |
| 1663 int methods_length = methods->length(); | |
| 1664 int num_methods = 0; | |
| 1665 | |
| 1666 int i; | |
| 1667 for (i = 0; i < methods_length; i++) { | |
| 1668 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
| 1669 if (!method->is_initializer()) { | |
| 1670 if (!publicOnly || method->is_public()) { | |
| 1671 ++num_methods; | |
| 1672 } | |
| 1673 } | |
| 1674 } | |
| 1675 | |
| 1676 // Allocate result | |
| 1142 | 1677 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), num_methods, CHECK_NULL); |
| 0 | 1678 objArrayHandle result (THREAD, r); |
| 1679 | |
| 1680 int out_idx = 0; | |
| 1681 for (i = 0; i < methods_length; i++) { | |
| 1682 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
| 1683 if (!method->is_initializer()) { | |
| 1684 if (!publicOnly || method->is_public()) { | |
| 1685 oop m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); | |
| 1686 result->obj_at_put(out_idx, m); | |
| 1687 ++out_idx; | |
| 1688 } | |
| 1689 } | |
| 1690 } | |
| 1691 assert(out_idx == num_methods, "just checking"); | |
| 1692 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1693 } | |
| 1694 JVM_END | |
| 1695 | |
| 1696 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1697 { | |
| 1698 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
| 1699 JvmtiVMObjectAllocEventCollector oam; | |
| 1700 | |
| 1701 // Exclude primitive types and array types | |
| 1702 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
| 1703 || Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { | |
| 1704 // Return empty array | |
| 1142 | 1705 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), 0 , CHECK_NULL); |
| 0 | 1706 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1707 } | |
| 1708 | |
| 1709 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
| 1710 | |
| 1711 // Ensure class is linked | |
| 1712 k->link_class(CHECK_NULL); | |
| 1713 | |
| 1714 objArrayHandle methods (THREAD, k->methods()); | |
| 1715 int methods_length = methods->length(); | |
| 1716 int num_constructors = 0; | |
| 1717 | |
| 1718 int i; | |
| 1719 for (i = 0; i < methods_length; i++) { | |
| 1720 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
| 1721 if (method->is_initializer() && !method->is_static()) { | |
| 1722 if (!publicOnly || method->is_public()) { | |
| 1723 ++num_constructors; | |
| 1724 } | |
| 1725 } | |
| 1726 } | |
| 1727 | |
| 1728 // Allocate result | |
| 1142 | 1729 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), num_constructors, CHECK_NULL); |
| 0 | 1730 objArrayHandle result(THREAD, r); |
| 1731 | |
| 1732 int out_idx = 0; | |
| 1733 for (i = 0; i < methods_length; i++) { | |
| 1734 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
| 1735 if (method->is_initializer() && !method->is_static()) { | |
| 1736 if (!publicOnly || method->is_public()) { | |
| 1737 oop m = Reflection::new_constructor(method, CHECK_NULL); | |
| 1738 result->obj_at_put(out_idx, m); | |
| 1739 ++out_idx; | |
| 1740 } | |
| 1741 } | |
| 1742 } | |
| 1743 assert(out_idx == num_constructors, "just checking"); | |
| 1744 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1745 } | |
| 1746 JVM_END | |
| 1747 | |
| 1748 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
| 1749 { | |
| 1750 JVMWrapper("JVM_GetClassAccessFlags"); | |
| 1751 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1752 // Primitive type | |
| 1753 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 1754 } | |
| 1755 | |
| 1756 Klass* k = Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls))); | |
| 1757 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; | |
| 1758 } | |
| 1759 JVM_END | |
| 1760 | |
| 1761 | |
| 1762 // Constant pool access ////////////////////////////////////////////////////////// | |
| 1763 | |
| 1764 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
| 1765 { | |
| 1766 JVMWrapper("JVM_GetClassConstantPool"); | |
| 1767 JvmtiVMObjectAllocEventCollector oam; | |
| 1768 | |
| 1769 // Return null for primitives and arrays | |
| 1770 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1771 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 1772 if (Klass::cast(k)->oop_is_instance()) { | |
| 1773 instanceKlassHandle k_h(THREAD, k); | |
| 1774 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
| 1775 sun_reflect_ConstantPool::set_cp_oop(jcp(), k_h->constants()); | |
| 1776 return JNIHandles::make_local(jcp()); | |
| 1777 } | |
| 1778 } | |
| 1779 return NULL; | |
| 1780 } | |
| 1781 JVM_END | |
| 1782 | |
| 1783 | |
| 1784 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject unused, jobject jcpool)) | |
| 1785 { | |
| 1786 JVMWrapper("JVM_ConstantPoolGetSize"); | |
| 1787 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1788 return cp->length(); | |
| 1789 } | |
| 1790 JVM_END | |
| 1791 | |
| 1792 | |
| 1793 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { | |
| 1794 if (!cp->is_within_bounds(index)) { | |
| 1795 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); | |
| 1796 } | |
| 1797 } | |
| 1798 | |
| 1799 | |
| 1800 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1801 { | |
| 1802 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
| 1803 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1804 bounds_check(cp, index, CHECK_NULL); | |
| 1805 constantTag tag = cp->tag_at(index); | |
| 1806 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 1807 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1808 } | |
| 1809 klassOop k = cp->klass_at(index, CHECK_NULL); | |
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1810 return (jclass) JNIHandles::make_local(k->java_mirror()); |
| 0 | 1811 } |
| 1812 JVM_END | |
| 1813 | |
| 1814 | |
| 1815 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1816 { | |
| 1817 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
| 1818 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1819 bounds_check(cp, index, CHECK_NULL); | |
| 1820 constantTag tag = cp->tag_at(index); | |
| 1821 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 1822 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1823 } | |
| 1824 klassOop k = constantPoolOopDesc::klass_at_if_loaded(cp, index); | |
| 1825 if (k == NULL) return NULL; | |
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1826 return (jclass) JNIHandles::make_local(k->java_mirror()); |
| 0 | 1827 } |
| 1828 JVM_END | |
| 1829 | |
| 1830 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 1831 constantTag tag = cp->tag_at(index); | |
| 1832 if (!tag.is_method() && !tag.is_interface_method()) { | |
| 1833 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1834 } | |
| 1835 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
| 1836 klassOop k_o; | |
| 1837 if (force_resolution) { | |
| 1838 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 1839 } else { | |
| 1840 k_o = constantPoolOopDesc::klass_at_if_loaded(cp, klass_ref); | |
| 1841 if (k_o == NULL) return NULL; | |
| 1842 } | |
| 1843 instanceKlassHandle k(THREAD, k_o); | |
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1844 Symbol* name = cp->uncached_name_ref_at(index); |
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1845 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 1846 methodHandle m (THREAD, k->find_method(name, sig)); |
| 1847 if (m.is_null()) { | |
| 1848 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
| 1849 } | |
| 1850 oop method; | |
| 1851 if (!m->is_initializer() || m->is_static()) { | |
| 1852 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
| 1853 } else { | |
| 1854 method = Reflection::new_constructor(m, CHECK_NULL); | |
| 1855 } | |
| 1856 return JNIHandles::make_local(method); | |
| 1857 } | |
| 1858 | |
| 1859 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1860 { | |
| 1861 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
| 1862 JvmtiVMObjectAllocEventCollector oam; | |
| 1863 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1864 bounds_check(cp, index, CHECK_NULL); | |
| 1865 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
| 1866 return res; | |
| 1867 } | |
| 1868 JVM_END | |
| 1869 | |
| 1870 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1871 { | |
| 1872 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
| 1873 JvmtiVMObjectAllocEventCollector oam; | |
| 1874 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1875 bounds_check(cp, index, CHECK_NULL); | |
| 1876 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
| 1877 return res; | |
| 1878 } | |
| 1879 JVM_END | |
| 1880 | |
| 1881 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 1882 constantTag tag = cp->tag_at(index); | |
| 1883 if (!tag.is_field()) { | |
| 1884 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1885 } | |
| 1886 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
| 1887 klassOop k_o; | |
| 1888 if (force_resolution) { | |
| 1889 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 1890 } else { | |
| 1891 k_o = constantPoolOopDesc::klass_at_if_loaded(cp, klass_ref); | |
| 1892 if (k_o == NULL) return NULL; | |
| 1893 } | |
| 1894 instanceKlassHandle k(THREAD, k_o); | |
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1895 Symbol* name = cp->uncached_name_ref_at(index); |
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1896 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 1897 fieldDescriptor fd; |
| 1898 klassOop target_klass = k->find_field(name, sig, &fd); | |
| 1899 if (target_klass == NULL) { | |
| 1900 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
| 1901 } | |
| 1902 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
| 1903 return JNIHandles::make_local(field); | |
| 1904 } | |
| 1905 | |
| 1906 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1907 { | |
| 1908 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
| 1909 JvmtiVMObjectAllocEventCollector oam; | |
| 1910 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1911 bounds_check(cp, index, CHECK_NULL); | |
| 1912 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
| 1913 return res; | |
| 1914 } | |
| 1915 JVM_END | |
| 1916 | |
| 1917 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1918 { | |
| 1919 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
| 1920 JvmtiVMObjectAllocEventCollector oam; | |
| 1921 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1922 bounds_check(cp, index, CHECK_NULL); | |
| 1923 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
| 1924 return res; | |
| 1925 } | |
| 1926 JVM_END | |
| 1927 | |
| 1928 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1929 { | |
| 1930 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
| 1931 JvmtiVMObjectAllocEventCollector oam; | |
| 1932 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1933 bounds_check(cp, index, CHECK_NULL); | |
| 1934 constantTag tag = cp->tag_at(index); | |
| 1935 if (!tag.is_field_or_method()) { | |
| 1936 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1937 } | |
| 1938 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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1939 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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1940 Symbol* member_name = cp->uncached_name_ref_at(index); |
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1941 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
| 1142 | 1942 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
| 0 | 1943 objArrayHandle dest(THREAD, dest_o); |
| 1944 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
| 1945 dest->obj_at_put(0, str()); | |
| 1946 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
| 1947 dest->obj_at_put(1, str()); | |
| 1948 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
| 1949 dest->obj_at_put(2, str()); | |
| 1950 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 1951 } | |
| 1952 JVM_END | |
| 1953 | |
| 1954 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1955 { | |
| 1956 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
| 1957 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1958 bounds_check(cp, index, CHECK_0); | |
| 1959 constantTag tag = cp->tag_at(index); | |
| 1960 if (!tag.is_int()) { | |
| 1961 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1962 } | |
| 1963 return cp->int_at(index); | |
| 1964 } | |
| 1965 JVM_END | |
| 1966 | |
| 1967 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1968 { | |
| 1969 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
| 1970 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1971 bounds_check(cp, index, CHECK_(0L)); | |
| 1972 constantTag tag = cp->tag_at(index); | |
| 1973 if (!tag.is_long()) { | |
| 1974 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1975 } | |
| 1976 return cp->long_at(index); | |
| 1977 } | |
| 1978 JVM_END | |
| 1979 | |
| 1980 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1981 { | |
| 1982 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
| 1983 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1984 bounds_check(cp, index, CHECK_(0.0f)); | |
| 1985 constantTag tag = cp->tag_at(index); | |
| 1986 if (!tag.is_float()) { | |
| 1987 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1988 } | |
| 1989 return cp->float_at(index); | |
| 1990 } | |
| 1991 JVM_END | |
| 1992 | |
| 1993 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1994 { | |
| 1995 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
| 1996 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1997 bounds_check(cp, index, CHECK_(0.0)); | |
| 1998 constantTag tag = cp->tag_at(index); | |
| 1999 if (!tag.is_double()) { | |
| 2000 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2001 } | |
| 2002 return cp->double_at(index); | |
| 2003 } | |
| 2004 JVM_END | |
| 2005 | |
| 2006 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 2007 { | |
| 2008 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
| 2009 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 2010 bounds_check(cp, index, CHECK_NULL); | |
| 2011 constantTag tag = cp->tag_at(index); | |
| 2012 if (!tag.is_string() && !tag.is_unresolved_string()) { | |
| 2013 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2014 } | |
| 2015 oop str = cp->string_at(index, CHECK_NULL); | |
| 2016 return (jstring) JNIHandles::make_local(str); | |
| 2017 } | |
| 2018 JVM_END | |
| 2019 | |
| 2020 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 2021 { | |
| 2022 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
| 2023 JvmtiVMObjectAllocEventCollector oam; | |
| 2024 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 2025 bounds_check(cp, index, CHECK_NULL); | |
| 2026 constantTag tag = cp->tag_at(index); | |
| 2027 if (!tag.is_symbol()) { | |
| 2028 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2029 } | |
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2030 Symbol* sym = cp->symbol_at(index); |
| 0 | 2031 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 2032 return (jstring) JNIHandles::make_local(str()); | |
| 2033 } | |
| 2034 JVM_END | |
| 2035 | |
| 2036 | |
| 2037 // Assertion support. ////////////////////////////////////////////////////////// | |
| 2038 | |
| 2039 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
| 2040 JVMWrapper("JVM_DesiredAssertionStatus"); | |
| 2041 assert(cls != NULL, "bad class"); | |
| 2042 | |
| 2043 oop r = JNIHandles::resolve(cls); | |
| 2044 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
| 2045 if (java_lang_Class::is_primitive(r)) return false; | |
| 2046 | |
| 2047 klassOop k = java_lang_Class::as_klassOop(r); | |
| 2048 assert(Klass::cast(k)->oop_is_instance(), "must be an instance klass"); | |
| 2049 if (! Klass::cast(k)->oop_is_instance()) return false; | |
| 2050 | |
| 2051 ResourceMark rm(THREAD); | |
| 2052 const char* name = Klass::cast(k)->name()->as_C_string(); | |
| 2053 bool system_class = Klass::cast(k)->class_loader() == NULL; | |
| 2054 return JavaAssertions::enabled(name, system_class); | |
| 2055 | |
| 2056 JVM_END | |
| 2057 | |
| 2058 | |
| 2059 // Return a new AssertionStatusDirectives object with the fields filled in with | |
| 2060 // command-line assertion arguments (i.e., -ea, -da). | |
| 2061 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
| 2062 JVMWrapper("JVM_AssertionStatusDirectives"); | |
| 2063 JvmtiVMObjectAllocEventCollector oam; | |
| 2064 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
| 2065 return JNIHandles::make_local(env, asd); | |
| 2066 JVM_END | |
| 2067 | |
| 2068 // Verification //////////////////////////////////////////////////////////////////////////////// | |
| 2069 | |
| 2070 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
| 2071 | |
| 2072 // RedefineClasses support: bug 6214132 caused verification to fail. | |
| 2073 // All functions from this section should call the jvmtiThreadSate function: | |
| 2074 // klassOop class_to_verify_considering_redefinition(klassOop klass). | |
| 2075 // The function returns a klassOop of the _scratch_class if the verifier | |
| 2076 // was invoked in the middle of the class redefinition. | |
| 2077 // Otherwise it returns its argument value which is the _the_class klassOop. | |
| 2078 // Please, refer to the description in the jvmtiThreadSate.hpp. | |
| 2079 | |
| 2080 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
| 2081 JVMWrapper("JVM_GetClassNameUTF"); | |
| 2082 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2083 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2084 return Klass::cast(k)->name()->as_utf8(); | |
| 2085 JVM_END | |
| 2086 | |
| 2087 | |
| 2088 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
| 2089 JVMWrapper("JVM_GetClassCPTypes"); | |
| 2090 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2091 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2092 // types will have length zero if this is not an instanceKlass | |
| 2093 // (length is determined by call to JVM_GetClassCPEntriesCount) | |
| 2094 if (Klass::cast(k)->oop_is_instance()) { | |
| 2095 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2096 for (int index = cp->length() - 1; index >= 0; index--) { | |
| 2097 constantTag tag = cp->tag_at(index); | |
| 2098 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : | |
| 2099 (tag.is_unresolved_string()) ? JVM_CONSTANT_String : tag.value(); | |
| 2100 } | |
| 2101 } | |
| 2102 JVM_END | |
| 2103 | |
| 2104 | |
| 2105 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
| 2106 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
| 2107 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2108 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2109 if (!Klass::cast(k)->oop_is_instance()) | |
| 2110 return 0; | |
| 2111 return instanceKlass::cast(k)->constants()->length(); | |
| 2112 JVM_END | |
| 2113 | |
| 2114 | |
| 2115 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
| 2116 JVMWrapper("JVM_GetClassFieldsCount"); | |
| 2117 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2118 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2119 if (!Klass::cast(k)->oop_is_instance()) | |
| 2120 return 0; | |
| 3938 | 2121 return instanceKlass::cast(k)->java_fields_count(); |
| 0 | 2122 JVM_END |
| 2123 | |
| 2124 | |
| 2125 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
| 2126 JVMWrapper("JVM_GetClassMethodsCount"); | |
| 2127 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2128 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2129 if (!Klass::cast(k)->oop_is_instance()) | |
| 2130 return 0; | |
| 2131 return instanceKlass::cast(k)->methods()->length(); | |
| 2132 JVM_END | |
| 2133 | |
| 2134 | |
| 2135 // The following methods, used for the verifier, are never called with | |
| 2136 // array klasses, so a direct cast to instanceKlass is safe. | |
| 2137 // Typically, these methods are called in a loop with bounds determined | |
| 2138 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
| 2139 // zero for arrays. | |
| 2140 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
| 2141 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
| 2142 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2143 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2144 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2145 int length = methodOop(method)->checked_exceptions_length(); | |
| 2146 if (length > 0) { | |
| 2147 CheckedExceptionElement* table= methodOop(method)->checked_exceptions_start(); | |
| 2148 for (int i = 0; i < length; i++) { | |
| 2149 exceptions[i] = table[i].class_cp_index; | |
| 2150 } | |
| 2151 } | |
| 2152 JVM_END | |
| 2153 | |
| 2154 | |
| 2155 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
| 2156 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
| 2157 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2158 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2159 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2160 return methodOop(method)->checked_exceptions_length(); | |
| 2161 JVM_END | |
| 2162 | |
| 2163 | |
| 2164 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
| 2165 JVMWrapper("JVM_GetMethodIxByteCode"); | |
| 2166 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2167 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2168 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2169 memcpy(code, methodOop(method)->code_base(), methodOop(method)->code_size()); | |
| 2170 JVM_END | |
| 2171 | |
| 2172 | |
| 2173 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
| 2174 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
| 2175 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2176 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2177 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2178 return methodOop(method)->code_size(); | |
| 2179 JVM_END | |
| 2180 | |
| 2181 | |
| 2182 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
| 2183 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
| 2184 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2185 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2186 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
|
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|
2187 ExceptionTable extable((methodOop(method))); |
|
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|
2188 entry->start_pc = extable.start_pc(entry_index); |
|
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diff
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|
2189 entry->end_pc = extable.end_pc(entry_index); |
|
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|
2190 entry->handler_pc = extable.handler_pc(entry_index); |
|
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|
2191 entry->catchType = extable.catch_type_index(entry_index); |
| 0 | 2192 JVM_END |
| 2193 | |
| 2194 | |
| 2195 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
| 2196 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
| 2197 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2198 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2199 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
|
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|
2200 return methodOop(method)->exception_table_length(); |
| 0 | 2201 JVM_END |
| 2202 | |
| 2203 | |
| 2204 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
| 2205 JVMWrapper("JVM_GetMethodIxModifiers"); | |
| 2206 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2207 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2208 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2209 return methodOop(method)->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 2210 JVM_END | |
| 2211 | |
| 2212 | |
| 2213 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
| 2214 JVMWrapper("JVM_GetFieldIxModifiers"); | |
| 2215 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2216 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 3938 | 2217 return instanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
| 0 | 2218 JVM_END |
| 2219 | |
| 2220 | |
| 2221 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
| 2222 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
| 2223 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2224 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2225 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2226 return methodOop(method)->max_locals(); | |
| 2227 JVM_END | |
| 2228 | |
| 2229 | |
| 2230 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
| 2231 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
| 2232 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2233 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2234 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2235 return methodOop(method)->size_of_parameters(); | |
| 2236 JVM_END | |
| 2237 | |
| 2238 | |
| 2239 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
| 2240 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
| 2241 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2242 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2243 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
|
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|
2244 return methodOop(method)->verifier_max_stack(); |
| 0 | 2245 JVM_END |
| 2246 | |
| 2247 | |
| 2248 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
| 2249 JVMWrapper("JVM_IsConstructorIx"); | |
| 2250 ResourceMark rm(THREAD); | |
| 2251 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2252 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2253 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2254 return methodOop(method)->name() == vmSymbols::object_initializer_name(); | |
| 2255 JVM_END | |
| 2256 | |
| 2257 | |
| 2258 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) | |
| 2259 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
| 2260 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2261 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2262 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2263 return methodOop(method)->name()->as_utf8(); | |
| 2264 JVM_END | |
| 2265 | |
| 2266 | |
| 2267 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
| 2268 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
| 2269 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2270 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2271 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2272 return methodOop(method)->signature()->as_utf8(); | |
| 2273 JVM_END | |
| 2274 | |
| 2275 /** | |
| 2276 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
| 2277 * read entries in the constant pool. Since the old verifier always | |
| 2278 * works on a copy of the code, it will not see any rewriting that | |
| 2279 * may possibly occur in the middle of verification. So it is important | |
| 2280 * that nothing it calls tries to use the cpCache instead of the raw | |
| 2281 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
| 2282 */ | |
| 2283 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2284 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
| 2285 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2286 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2287 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2288 switch (cp->tag_at(cp_index).value()) { | |
| 2289 case JVM_CONSTANT_Fieldref: | |
| 2290 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
| 2291 default: | |
| 2292 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
| 2293 } | |
| 2294 ShouldNotReachHere(); | |
| 2295 return NULL; | |
| 2296 JVM_END | |
| 2297 | |
| 2298 | |
| 2299 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2300 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
| 2301 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2302 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2303 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2304 switch (cp->tag_at(cp_index).value()) { | |
| 2305 case JVM_CONSTANT_InterfaceMethodref: | |
| 2306 case JVM_CONSTANT_Methodref: | |
|
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|
2307 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2308 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
| 2309 default: | |
| 2310 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
| 2311 } | |
| 2312 ShouldNotReachHere(); | |
| 2313 return NULL; | |
| 2314 JVM_END | |
| 2315 | |
| 2316 | |
| 2317 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2318 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
| 2319 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2320 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2321 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2322 switch (cp->tag_at(cp_index).value()) { | |
| 2323 case JVM_CONSTANT_InterfaceMethodref: | |
| 2324 case JVM_CONSTANT_Methodref: | |
|
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|
2325 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2326 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
| 2327 default: | |
| 2328 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
| 2329 } | |
| 2330 ShouldNotReachHere(); | |
| 2331 return NULL; | |
| 2332 JVM_END | |
| 2333 | |
| 2334 | |
| 2335 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2336 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
| 2337 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2338 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2339 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2340 switch (cp->tag_at(cp_index).value()) { | |
| 2341 case JVM_CONSTANT_Fieldref: | |
| 2342 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
| 2343 default: | |
| 2344 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
| 2345 } | |
| 2346 ShouldNotReachHere(); | |
| 2347 return NULL; | |
| 2348 JVM_END | |
| 2349 | |
| 2350 | |
| 2351 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2352 JVMWrapper("JVM_GetCPClassNameUTF"); | |
| 2353 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2354 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2355 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
|
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|
2356 Symbol* classname = cp->klass_name_at(cp_index); |
| 0 | 2357 return classname->as_utf8(); |
| 2358 JVM_END | |
| 2359 | |
| 2360 | |
| 2361 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2362 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
| 2363 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2364 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2365 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2366 switch (cp->tag_at(cp_index).value()) { | |
| 2367 case JVM_CONSTANT_Fieldref: { | |
| 2368 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
|
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|
2369 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2370 return classname->as_utf8(); |
| 2371 } | |
| 2372 default: | |
| 2373 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
| 2374 } | |
| 2375 ShouldNotReachHere(); | |
| 2376 return NULL; | |
| 2377 JVM_END | |
| 2378 | |
| 2379 | |
| 2380 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2381 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
| 2382 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2383 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2384 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2385 switch (cp->tag_at(cp_index).value()) { | |
| 2386 case JVM_CONSTANT_Methodref: | |
| 2387 case JVM_CONSTANT_InterfaceMethodref: { | |
| 2388 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
|
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|
2389 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2390 return classname->as_utf8(); |
| 2391 } | |
| 2392 default: | |
| 2393 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
| 2394 } | |
| 2395 ShouldNotReachHere(); | |
| 2396 return NULL; | |
| 2397 JVM_END | |
| 2398 | |
| 2399 | |
| 3938 | 2400 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
| 0 | 2401 JVMWrapper("JVM_GetCPFieldModifiers"); |
| 2402 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2403 klassOop k_called = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(called_cls)); | |
| 2404 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2405 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
| 2406 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2407 constantPoolOop cp_called = instanceKlass::cast(k_called)->constants(); | |
| 2408 switch (cp->tag_at(cp_index).value()) { | |
| 2409 case JVM_CONSTANT_Fieldref: { | |
|
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|
2410 Symbol* name = cp->uncached_name_ref_at(cp_index); |
|
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|
2411 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
| 3938 | 2412 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
| 2413 if (fs.name() == name && fs.signature() == signature) { | |
| 2414 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
| 0 | 2415 } |
| 2416 } | |
| 2417 return -1; | |
| 2418 } | |
| 2419 default: | |
| 2420 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
| 2421 } | |
| 2422 ShouldNotReachHere(); | |
| 2423 return 0; | |
| 2424 JVM_END | |
| 2425 | |
| 2426 | |
| 2427 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
| 2428 JVMWrapper("JVM_GetCPMethodModifiers"); | |
| 2429 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2430 klassOop k_called = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(called_cls)); | |
| 2431 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2432 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
| 2433 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2434 switch (cp->tag_at(cp_index).value()) { | |
| 2435 case JVM_CONSTANT_Methodref: | |
| 2436 case JVM_CONSTANT_InterfaceMethodref: { | |
|
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2437 Symbol* name = cp->uncached_name_ref_at(cp_index); |
|
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|
2438 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
| 0 | 2439 objArrayOop methods = instanceKlass::cast(k_called)->methods(); |
| 2440 int methods_count = methods->length(); | |
| 2441 for (int i = 0; i < methods_count; i++) { | |
| 2442 methodOop method = methodOop(methods->obj_at(i)); | |
| 2443 if (method->name() == name && method->signature() == signature) { | |
| 2444 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 2445 } | |
| 2446 } | |
| 2447 return -1; | |
| 2448 } | |
| 2449 default: | |
| 2450 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
| 2451 } | |
| 2452 ShouldNotReachHere(); | |
| 2453 return 0; | |
| 2454 JVM_END | |
| 2455 | |
| 2456 | |
| 2457 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
| 2458 | |
| 2459 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
| 2460 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
| 2461 JVM_END | |
| 2462 | |
| 2463 | |
| 2464 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
| 2465 JVMWrapper("JVM_IsSameClassPackage"); | |
| 2466 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
| 2467 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
| 2468 klassOop klass1 = java_lang_Class::as_klassOop(class1_mirror); | |
| 2469 klassOop klass2 = java_lang_Class::as_klassOop(class2_mirror); | |
| 2470 return (jboolean) Reflection::is_same_class_package(klass1, klass2); | |
| 2471 JVM_END | |
| 2472 | |
| 2473 | |
| 2474 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
| 2475 | |
| 2476 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
| 2477 JVMWrapper2("JVM_Open (%s)", fname); | |
| 2478 | |
| 2479 //%note jvm_r6 | |
|
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diff
changeset
|
2480 int result = os::open(fname, flags, mode); |
| 0 | 2481 if (result >= 0) { |
| 2482 return result; | |
| 2483 } else { | |
| 2484 switch(errno) { | |
| 2485 case EEXIST: | |
| 2486 return JVM_EEXIST; | |
| 2487 default: | |
| 2488 return -1; | |
| 2489 } | |
| 2490 } | |
| 2491 JVM_END | |
| 2492 | |
| 2493 | |
| 2494 JVM_LEAF(jint, JVM_Close(jint fd)) | |
| 2495 JVMWrapper2("JVM_Close (0x%x)", fd); | |
| 2496 //%note jvm_r6 | |
|
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diff
changeset
|
2497 return os::close(fd); |
| 0 | 2498 JVM_END |
| 2499 | |
| 2500 | |
| 2501 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
| 2502 JVMWrapper2("JVM_Read (0x%x)", fd); | |
| 2503 | |
| 2504 //%note jvm_r6 | |
|
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diff
changeset
|
2505 return (jint)os::restartable_read(fd, buf, nbytes); |
| 0 | 2506 JVM_END |
| 2507 | |
| 2508 | |
| 2509 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
| 2510 JVMWrapper2("JVM_Write (0x%x)", fd); | |
| 2511 | |
| 2512 //%note jvm_r6 | |
|
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|
2513 return (jint)os::write(fd, buf, nbytes); |
| 0 | 2514 JVM_END |
| 2515 | |
| 2516 | |
| 2517 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
| 2518 JVMWrapper2("JVM_Available (0x%x)", fd); | |
| 2519 //%note jvm_r6 | |
|
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diff
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|
2520 return os::available(fd, pbytes); |
| 0 | 2521 JVM_END |
| 2522 | |
| 2523 | |
| 2524 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
| 2525 JVMWrapper4("JVM_Lseek (0x%x, %Ld, %d)", fd, offset, whence); | |
| 2526 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2527 return os::lseek(fd, offset, whence); |
| 0 | 2528 JVM_END |
| 2529 | |
| 2530 | |
| 2531 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
| 2532 JVMWrapper3("JVM_SetLength (0x%x, %Ld)", fd, length); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2533 return os::ftruncate(fd, length); |
| 0 | 2534 JVM_END |
| 2535 | |
| 2536 | |
| 2537 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
| 2538 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
| 2539 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2540 return os::fsync(fd); |
| 0 | 2541 JVM_END |
| 2542 | |
| 2543 | |
| 2544 // Printing support ////////////////////////////////////////////////// | |
| 2545 extern "C" { | |
| 2546 | |
| 2547 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { | |
| 2548 // see bug 4399518, 4417214 | |
| 2549 if ((intptr_t)count <= 0) return -1; | |
| 2550 return vsnprintf(str, count, fmt, args); | |
| 2551 } | |
| 2552 | |
| 2553 | |
| 2554 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { | |
| 2555 va_list args; | |
| 2556 int len; | |
| 2557 va_start(args, fmt); | |
| 2558 len = jio_vsnprintf(str, count, fmt, args); | |
| 2559 va_end(args); | |
| 2560 return len; | |
| 2561 } | |
| 2562 | |
| 2563 | |
| 2564 int jio_fprintf(FILE* f, const char *fmt, ...) { | |
| 2565 int len; | |
| 2566 va_list args; | |
| 2567 va_start(args, fmt); | |
| 2568 len = jio_vfprintf(f, fmt, args); | |
| 2569 va_end(args); | |
| 2570 return len; | |
| 2571 } | |
| 2572 | |
| 2573 | |
| 2574 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { | |
| 2575 if (Arguments::vfprintf_hook() != NULL) { | |
| 2576 return Arguments::vfprintf_hook()(f, fmt, args); | |
| 2577 } else { | |
| 2578 return vfprintf(f, fmt, args); | |
| 2579 } | |
| 2580 } | |
| 2581 | |
| 2582 | |
| 2191 | 2583 JNIEXPORT int jio_printf(const char *fmt, ...) { |
| 0 | 2584 int len; |
| 2585 va_list args; | |
| 2586 va_start(args, fmt); | |
| 2587 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
| 2588 va_end(args); | |
| 2589 return len; | |
| 2590 } | |
| 2591 | |
| 2592 | |
| 2593 // HotSpot specific jio method | |
| 2594 void jio_print(const char* s) { | |
| 2595 // Try to make this function as atomic as possible. | |
| 2596 if (Arguments::vfprintf_hook() != NULL) { | |
| 2597 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
| 2598 } else { | |
|
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
431
diff
changeset
|
2599 // Make an unused local variable to avoid warning from gcc 4.x compiler. |
|
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
431
diff
changeset
|
2600 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
| 0 | 2601 } |
| 2602 } | |
| 2603 | |
| 2604 } // Extern C | |
| 2605 | |
| 2606 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
| 2607 | |
| 2608 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
| 2609 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
| 2610 // OSThread objects. The exception to this rule is when the target object is the thread | |
| 2611 // doing the operation, in which case we know that the thread won't exit until the | |
| 2612 // operation is done (all exits being voluntary). There are a few cases where it is | |
| 2613 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
| 2614 // you are alive. While these can still happen, they are not subject to deadlocks if | |
| 2615 // the lock is held while the operation occurs (this is not the case for suspend, for | |
| 2616 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
| 2617 // implementation is local to this file, we always lock Threads_lock for that one. | |
| 2618 | |
| 2619 static void thread_entry(JavaThread* thread, TRAPS) { | |
| 2620 HandleMark hm(THREAD); | |
| 2621 Handle obj(THREAD, thread->threadObj()); | |
| 2622 JavaValue result(T_VOID); | |
| 2623 JavaCalls::call_virtual(&result, | |
| 2624 obj, | |
| 1142 | 2625 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
2626 vmSymbols::run_method_name(), |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
2627 vmSymbols::void_method_signature(), |
| 0 | 2628 THREAD); |
| 2629 } | |
| 2630 | |
| 2631 | |
| 2632 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
| 2633 JVMWrapper("JVM_StartThread"); | |
| 2634 JavaThread *native_thread = NULL; | |
| 2635 | |
| 2636 // We cannot hold the Threads_lock when we throw an exception, | |
| 2637 // due to rank ordering issues. Example: we might need to grab the | |
| 2638 // Heap_lock while we construct the exception. | |
| 2639 bool throw_illegal_thread_state = false; | |
| 2640 | |
| 2641 // We must release the Threads_lock before we can post a jvmti event | |
| 2642 // in Thread::start. | |
| 2643 { | |
| 2644 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
| 2645 // we operate. | |
| 2646 MutexLocker mu(Threads_lock); | |
| 2647 | |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2648 // Since JDK 5 the java.lang.Thread threadStatus is used to prevent |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2649 // re-starting an already started thread, so we should usually find |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2650 // that the JavaThread is null. However for a JNI attached thread |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2651 // there is a small window between the Thread object being created |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2652 // (with its JavaThread set) and the update to its threadStatus, so we |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2653 // have to check for this |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2654 if (java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)) != NULL) { |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2655 throw_illegal_thread_state = true; |
| 0 | 2656 } else { |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2657 // We could also check the stillborn flag to see if this thread was already stopped, but |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2658 // for historical reasons we let the thread detect that itself when it starts running |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2659 |
| 0 | 2660 jlong size = |
| 2661 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
| 2662 // Allocate the C++ Thread structure and create the native thread. The | |
| 2663 // stack size retrieved from java is signed, but the constructor takes | |
| 2664 // size_t (an unsigned type), so avoid passing negative values which would | |
| 2665 // result in really large stacks. | |
| 2666 size_t sz = size > 0 ? (size_t) size : 0; | |
| 2667 native_thread = new JavaThread(&thread_entry, sz); | |
| 2668 | |
| 2669 // At this point it may be possible that no osthread was created for the | |
| 2670 // JavaThread due to lack of memory. Check for this situation and throw | |
| 2671 // an exception if necessary. Eventually we may want to change this so | |
| 2672 // that we only grab the lock if the thread was created successfully - | |
| 2673 // then we can also do this check and throw the exception in the | |
| 2674 // JavaThread constructor. | |
| 2675 if (native_thread->osthread() != NULL) { | |
| 2676 // Note: the current thread is not being used within "prepare". | |
| 2677 native_thread->prepare(jthread); | |
| 2678 } | |
| 2679 } | |
| 2680 } | |
| 2681 | |
| 2682 if (throw_illegal_thread_state) { | |
| 2683 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
| 2684 } | |
| 2685 | |
| 2686 assert(native_thread != NULL, "Starting null thread?"); | |
| 2687 | |
| 2688 if (native_thread->osthread() == NULL) { | |
| 2689 // No one should hold a reference to the 'native_thread'. | |
| 2690 delete native_thread; | |
| 2691 if (JvmtiExport::should_post_resource_exhausted()) { | |
| 2692 JvmtiExport::post_resource_exhausted( | |
| 2693 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
| 2694 "unable to create new native thread"); | |
| 2695 } | |
| 2696 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
| 2697 "unable to create new native thread"); | |
| 2698 } | |
| 2699 | |
| 2700 Thread::start(native_thread); | |
| 2701 | |
| 2702 JVM_END | |
| 2703 | |
| 2704 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
| 2705 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
| 2706 // but is thought to be reliable and simple. In the case, where the receiver is the | |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2707 // same thread as the sender, no safepoint is needed. |
| 0 | 2708 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
| 2709 JVMWrapper("JVM_StopThread"); | |
| 2710 | |
| 2711 oop java_throwable = JNIHandles::resolve(throwable); | |
| 2712 if (java_throwable == NULL) { | |
| 2713 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 2714 } | |
| 2715 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2716 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
|
4872
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4717
diff
changeset
|
2717 Events::log_exception(JavaThread::current(), |
|
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4717
diff
changeset
|
2718 "JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", |
|
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4717
diff
changeset
|
2719 receiver, (address)java_thread, throwable); |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2720 // First check if thread is alive |
| 0 | 2721 if (receiver != NULL) { |
| 2722 // Check if exception is getting thrown at self (use oop equality, since the | |
| 2723 // target object might exit) | |
| 2724 if (java_thread == thread->threadObj()) { | |
| 2725 THROW_OOP(java_throwable); | |
| 2726 } else { | |
| 2727 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
| 2728 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
| 2729 } | |
| 2730 } | |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2731 else { |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2732 // Either: |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2733 // - target thread has not been started before being stopped, or |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2734 // - target thread already terminated |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2735 // We could read the threadStatus to determine which case it is |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2736 // but that is overkill as it doesn't matter. We must set the |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2737 // stillborn flag for the first case, and if the thread has already |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2738 // exited setting this flag has no affect |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2739 java_lang_Thread::set_stillborn(java_thread); |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2740 } |
| 0 | 2741 JVM_END |
| 2742 | |
| 2743 | |
| 2744 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
| 2745 JVMWrapper("JVM_IsThreadAlive"); | |
| 2746 | |
| 2747 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
| 2748 return java_lang_Thread::is_alive(thread_oop); | |
| 2749 JVM_END | |
| 2750 | |
| 2751 | |
| 2752 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
| 2753 JVMWrapper("JVM_SuspendThread"); | |
| 2754 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2755 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
| 2756 | |
| 2757 if (receiver != NULL) { | |
| 2758 // thread has run and has not exited (still on threads list) | |
| 2759 | |
| 2760 { | |
| 2761 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
| 2762 if (receiver->is_external_suspend()) { | |
| 2763 // Don't allow nested external suspend requests. We can't return | |
| 2764 // an error from this interface so just ignore the problem. | |
| 2765 return; | |
| 2766 } | |
| 2767 if (receiver->is_exiting()) { // thread is in the process of exiting | |
| 2768 return; | |
| 2769 } | |
| 2770 receiver->set_external_suspend(); | |
| 2771 } | |
| 2772 | |
| 2773 // java_suspend() will catch threads in the process of exiting | |
| 2774 // and will ignore them. | |
| 2775 receiver->java_suspend(); | |
| 2776 | |
| 2777 // It would be nice to have the following assertion in all the | |
| 2778 // time, but it is possible for a racing resume request to have | |
| 2779 // resumed this thread right after we suspended it. Temporarily | |
| 2780 // enable this assertion if you are chasing a different kind of | |
| 2781 // bug. | |
| 2782 // | |
| 2783 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
| 2784 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
| 2785 } | |
| 2786 JVM_END | |
| 2787 | |
| 2788 | |
| 2789 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
| 2790 JVMWrapper("JVM_ResumeThread"); | |
| 2791 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
| 2792 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
| 2793 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
| 2794 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
| 2795 // looks at it. | |
| 2796 MutexLocker ml(Threads_lock); | |
| 2797 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 2798 if (thr != NULL) { | |
| 2799 // the thread has run and is not in the process of exiting | |
| 2800 thr->java_resume(); | |
| 2801 } | |
| 2802 JVM_END | |
| 2803 | |
| 2804 | |
| 2805 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
| 2806 JVMWrapper("JVM_SetThreadPriority"); | |
| 2807 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 2808 MutexLocker ml(Threads_lock); | |
| 2809 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2810 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
| 2811 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 2812 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
| 2813 Thread::set_priority(thr, (ThreadPriority)prio); | |
| 2814 } | |
| 2815 JVM_END | |
| 2816 | |
| 2817 | |
| 2818 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
| 2819 JVMWrapper("JVM_Yield"); | |
| 2820 if (os::dont_yield()) return; | |
| 4006 | 2821 #ifndef USDT2 |
|
1324
e392695de029
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1144
diff
changeset
|
2822 HS_DTRACE_PROBE0(hotspot, thread__yield); |
| 4006 | 2823 #else /* USDT2 */ |
| 2824 HOTSPOT_THREAD_YIELD(); | |
| 2825 #endif /* USDT2 */ | |
| 0 | 2826 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
| 2827 // Critical for similar threading behaviour | |
| 2828 if (ConvertYieldToSleep) { | |
| 2829 os::sleep(thread, MinSleepInterval, false); | |
| 2830 } else { | |
| 2831 os::yield(); | |
| 2832 } | |
| 2833 JVM_END | |
| 2834 | |
| 2835 | |
| 2836 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
| 2837 JVMWrapper("JVM_Sleep"); | |
| 2838 | |
| 2839 if (millis < 0) { | |
| 2840 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
| 2841 } | |
| 2842 | |
| 2843 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
| 2844 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 2845 } | |
| 2846 | |
| 2847 // Save current thread state and restore it at the end of this block. | |
| 2848 // And set new thread state to SLEEPING. | |
| 2849 JavaThreadSleepState jtss(thread); | |
| 2850 | |
| 4006 | 2851 #ifndef USDT2 |
|
1324
e392695de029
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1144
diff
changeset
|
2852 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); |
| 4006 | 2853 #else /* USDT2 */ |
| 2854 HOTSPOT_THREAD_SLEEP_BEGIN( | |
| 2855 millis); | |
| 2856 #endif /* USDT2 */ | |
|
1324
e392695de029
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1144
diff
changeset
|
2857 |
| 0 | 2858 if (millis == 0) { |
| 2859 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
| 2860 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
| 2861 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
| 2862 // for SOLARIS | |
| 2863 if (ConvertSleepToYield) { | |
| 2864 os::yield(); | |
| 2865 } else { | |
| 2866 ThreadState old_state = thread->osthread()->get_state(); | |
| 2867 thread->osthread()->set_state(SLEEPING); | |
| 2868 os::sleep(thread, MinSleepInterval, false); | |
| 2869 thread->osthread()->set_state(old_state); | |
| 2870 } | |
| 2871 } else { | |
| 2872 ThreadState old_state = thread->osthread()->get_state(); | |
| 2873 thread->osthread()->set_state(SLEEPING); | |
| 2874 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
| 2875 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
| 2876 // us while we were sleeping. We do not overwrite those. | |
| 2877 if (!HAS_PENDING_EXCEPTION) { | |
| 4006 | 2878 #ifndef USDT2 |
|
1324
e392695de029
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1144
diff
changeset
|
2879 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); |
| 4006 | 2880 #else /* USDT2 */ |
| 2881 HOTSPOT_THREAD_SLEEP_END( | |
| 2882 1); | |
| 2883 #endif /* USDT2 */ | |
| 0 | 2884 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
| 2885 // to properly restore the thread state. That's likely wrong. | |
| 2886 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 2887 } | |
| 2888 } | |
| 2889 thread->osthread()->set_state(old_state); | |
| 2890 } | |
| 4006 | 2891 #ifndef USDT2 |
|
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|
2892 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); |
| 4006 | 2893 #else /* USDT2 */ |
| 2894 HOTSPOT_THREAD_SLEEP_END( | |
| 2895 0); | |
| 2896 #endif /* USDT2 */ | |
| 0 | 2897 JVM_END |
| 2898 | |
| 2899 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
| 2900 JVMWrapper("JVM_CurrentThread"); | |
| 2901 oop jthread = thread->threadObj(); | |
| 2902 assert (thread != NULL, "no current thread!"); | |
| 2903 return JNIHandles::make_local(env, jthread); | |
| 2904 JVM_END | |
| 2905 | |
| 2906 | |
| 2907 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
| 2908 JVMWrapper("JVM_CountStackFrames"); | |
| 2909 | |
| 2910 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 2911 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2912 bool throw_illegal_thread_state = false; | |
| 2913 int count = 0; | |
| 2914 | |
| 2915 { | |
| 2916 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 2917 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 2918 // acquire of the lock | |
| 2919 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 2920 | |
| 2921 if (thr == NULL) { | |
| 2922 // do nothing | |
| 2923 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
| 2924 // Check whether this java thread has been suspended already. If not, throws | |
| 2925 // IllegalThreadStateException. We defer to throw that exception until | |
| 2926 // Threads_lock is released since loading exception class has to leave VM. | |
| 2927 // The correct way to test a thread is actually suspended is | |
| 2928 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
| 2929 // the Threads_lock. The above tests are sufficient for our purposes | |
| 2930 // provided the walkability of the stack is stable - which it isn't | |
| 2931 // 100% but close enough for most practical purposes. | |
| 2932 throw_illegal_thread_state = true; | |
| 2933 } else { | |
| 2934 // Count all java activation, i.e., number of vframes | |
| 2935 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
| 2936 // Native frames are not counted | |
| 2937 if (!vfst.method()->is_native()) count++; | |
| 2938 } | |
| 2939 } | |
| 2940 } | |
| 2941 | |
| 2942 if (throw_illegal_thread_state) { | |
| 2943 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
| 2944 "this thread is not suspended"); | |
| 2945 } | |
| 2946 return count; | |
| 2947 JVM_END | |
| 2948 | |
| 2949 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
| 2950 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
| 2951 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
| 2952 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
| 2953 // outside the critical section. Threads_lock is hot so we want to minimize | |
| 2954 // the hold-time. A cleaner interface would be to decompose interrupt into | |
| 2955 // two steps. The 1st phase, performed under Threads_lock, would return | |
| 2956 // a closure that'd be invoked after Threads_lock was dropped. | |
| 2957 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
| 2958 // admit spurious wakeups. | |
| 2959 | |
| 2960 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
| 2961 JVMWrapper("JVM_Interrupt"); | |
| 2962 | |
| 2963 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 2964 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2965 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 2966 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 2967 // acquire of the lock | |
| 2968 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 2969 if (thr != NULL) { | |
| 2970 Thread::interrupt(thr); | |
| 2971 } | |
| 2972 JVM_END | |
| 2973 | |
| 2974 | |
| 2975 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
| 2976 JVMWrapper("JVM_IsInterrupted"); | |
| 2977 | |
| 2978 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 2979 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2980 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 2981 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 2982 // acquire of the lock | |
| 2983 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 2984 if (thr == NULL) { | |
| 2985 return JNI_FALSE; | |
| 2986 } else { | |
| 2987 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
| 2988 } | |
| 2989 JVM_END | |
| 2990 | |
| 2991 | |
| 2992 // Return true iff the current thread has locked the object passed in | |
| 2993 | |
| 2994 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
| 2995 JVMWrapper("JVM_HoldsLock"); | |
| 2996 assert(THREAD->is_Java_thread(), "sanity check"); | |
| 2997 if (obj == NULL) { | |
| 2998 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
| 2999 } | |
| 3000 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
| 3001 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
| 3002 JVM_END | |
| 3003 | |
| 3004 | |
| 3005 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
| 3006 JVMWrapper("JVM_DumpAllStacks"); | |
| 3007 VM_PrintThreads op; | |
| 3008 VMThread::execute(&op); | |
| 3009 if (JvmtiExport::should_post_data_dump()) { | |
| 3010 JvmtiExport::post_data_dump(); | |
| 3011 } | |
| 3012 JVM_END | |
| 3013 | |
| 4006 | 3014 JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name)) |
| 3015 JVMWrapper("JVM_SetNativeThreadName"); | |
| 3016 ResourceMark rm(THREAD); | |
| 3017 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3018 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 3019 // Thread naming only supported for the current thread, doesn't work for | |
| 3020 // target threads. | |
| 3021 if (Thread::current() == thr && !thr->has_attached_via_jni()) { | |
| 3022 // we don't set the name of an attached thread to avoid stepping | |
| 3023 // on other programs | |
| 3024 const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
| 3025 os::set_native_thread_name(thread_name); | |
| 3026 } | |
| 3027 JVM_END | |
| 0 | 3028 |
| 3029 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
| 3030 | |
| 3031 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
| 3032 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
| 3033 if (jthread->privileged_stack_top() == NULL) return false; | |
| 3034 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
| 3035 oop loader = jthread->privileged_stack_top()->class_loader(); | |
| 3036 if (loader == NULL) return true; | |
| 3037 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
| 3038 if (trusted) return true; | |
| 3039 } | |
| 3040 return false; | |
| 3041 } | |
| 3042 | |
| 3043 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
| 3044 JVMWrapper("JVM_CurrentLoadedClass"); | |
| 3045 ResourceMark rm(THREAD); | |
| 3046 | |
| 3047 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3048 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3049 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3050 if (trusted) return NULL; | |
| 3051 | |
| 3052 methodOop m = vfst.method(); | |
| 3053 if (!m->is_native()) { | |
| 3054 klassOop holder = m->method_holder(); | |
| 3055 oop loader = instanceKlass::cast(holder)->class_loader(); | |
| 3056 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { | |
| 3057 return (jclass) JNIHandles::make_local(env, Klass::cast(holder)->java_mirror()); | |
| 3058 } | |
| 3059 } | |
| 3060 } | |
| 3061 return NULL; | |
| 3062 JVM_END | |
| 3063 | |
| 3064 | |
| 3065 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
| 3066 JVMWrapper("JVM_CurrentClassLoader"); | |
| 3067 ResourceMark rm(THREAD); | |
| 3068 | |
| 3069 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3070 | |
| 3071 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3072 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3073 if (trusted) return NULL; | |
| 3074 | |
| 3075 methodOop m = vfst.method(); | |
| 3076 if (!m->is_native()) { | |
| 3077 klassOop holder = m->method_holder(); | |
| 3078 assert(holder->is_klass(), "just checking"); | |
| 3079 oop loader = instanceKlass::cast(holder)->class_loader(); | |
| 3080 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { | |
| 3081 return JNIHandles::make_local(env, loader); | |
| 3082 } | |
| 3083 } | |
| 3084 } | |
| 3085 return NULL; | |
| 3086 JVM_END | |
| 3087 | |
| 3088 | |
| 3089 // Utility object for collecting method holders walking down the stack | |
| 3090 class KlassLink: public ResourceObj { | |
| 3091 public: | |
| 3092 KlassHandle klass; | |
| 3093 KlassLink* next; | |
| 3094 | |
| 3095 KlassLink(KlassHandle k) { klass = k; next = NULL; } | |
| 3096 }; | |
| 3097 | |
| 3098 | |
| 3099 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
| 3100 JVMWrapper("JVM_GetClassContext"); | |
| 3101 ResourceMark rm(THREAD); | |
| 3102 JvmtiVMObjectAllocEventCollector oam; | |
| 3103 // Collect linked list of (handles to) method holders | |
| 3104 KlassLink* first = NULL; | |
| 3105 KlassLink* last = NULL; | |
| 3106 int depth = 0; | |
| 3107 | |
| 3108 for(vframeStream vfst(thread); !vfst.at_end(); vfst.security_get_caller_frame(1)) { | |
| 3109 // Native frames are not returned | |
| 3110 if (!vfst.method()->is_native()) { | |
| 3111 klassOop holder = vfst.method()->method_holder(); | |
| 3112 assert(holder->is_klass(), "just checking"); | |
| 3113 depth++; | |
| 3114 KlassLink* l = new KlassLink(KlassHandle(thread, holder)); | |
| 3115 if (first == NULL) { | |
| 3116 first = last = l; | |
| 3117 } else { | |
| 3118 last->next = l; | |
| 3119 last = l; | |
| 3120 } | |
| 3121 } | |
| 3122 } | |
| 3123 | |
| 3124 // Create result array of type [Ljava/lang/Class; | |
| 1142 | 3125 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), depth, CHECK_NULL); |
| 0 | 3126 // Fill in mirrors corresponding to method holders |
| 3127 int index = 0; | |
| 3128 while (first != NULL) { | |
| 3129 result->obj_at_put(index++, Klass::cast(first->klass())->java_mirror()); | |
| 3130 first = first->next; | |
| 3131 } | |
| 3132 assert(index == depth, "just checking"); | |
| 3133 | |
| 3134 return (jobjectArray) JNIHandles::make_local(env, result); | |
| 3135 JVM_END | |
| 3136 | |
| 3137 | |
| 3138 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
| 3139 JVMWrapper("JVM_ClassDepth"); | |
| 3140 ResourceMark rm(THREAD); | |
| 3141 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 3142 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
| 3143 | |
| 3144 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
|
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3145 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
|
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|
3146 if (class_name_sym == NULL) { |
| 0 | 3147 return -1; |
| 3148 } | |
| 3149 | |
| 3150 int depth = 0; | |
| 3151 | |
| 3152 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3153 if (!vfst.method()->is_native()) { | |
| 3154 klassOop holder = vfst.method()->method_holder(); | |
| 3155 assert(holder->is_klass(), "just checking"); | |
|
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|
3156 if (instanceKlass::cast(holder)->name() == class_name_sym) { |
| 0 | 3157 return depth; |
| 3158 } | |
| 3159 depth++; | |
| 3160 } | |
| 3161 } | |
| 3162 return -1; | |
| 3163 JVM_END | |
| 3164 | |
| 3165 | |
| 3166 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
| 3167 JVMWrapper("JVM_ClassLoaderDepth"); | |
| 3168 ResourceMark rm(THREAD); | |
| 3169 int depth = 0; | |
| 3170 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3171 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
| 3172 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3173 if (trusted) return -1; | |
| 3174 | |
| 3175 methodOop m = vfst.method(); | |
| 3176 if (!m->is_native()) { | |
| 3177 klassOop holder = m->method_holder(); | |
| 3178 assert(holder->is_klass(), "just checking"); | |
| 3179 oop loader = instanceKlass::cast(holder)->class_loader(); | |
| 3180 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { | |
| 3181 return depth; | |
| 3182 } | |
| 3183 depth++; | |
| 3184 } | |
| 3185 } | |
| 3186 return -1; | |
| 3187 JVM_END | |
| 3188 | |
| 3189 | |
| 3190 // java.lang.Package //////////////////////////////////////////////////////////////// | |
| 3191 | |
| 3192 | |
| 3193 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
| 3194 JVMWrapper("JVM_GetSystemPackage"); | |
| 3195 ResourceMark rm(THREAD); | |
| 3196 JvmtiVMObjectAllocEventCollector oam; | |
| 3197 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
| 3198 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
| 3199 return (jstring) JNIHandles::make_local(result); | |
| 3200 JVM_END | |
| 3201 | |
| 3202 | |
| 3203 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
| 3204 JVMWrapper("JVM_GetSystemPackages"); | |
| 3205 JvmtiVMObjectAllocEventCollector oam; | |
| 3206 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
| 3207 return (jobjectArray) JNIHandles::make_local(result); | |
| 3208 JVM_END | |
| 3209 | |
| 3210 | |
| 3211 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
| 3212 | |
| 3213 bool force_verify_field_access(klassOop current_class, klassOop field_class, AccessFlags access, bool classloader_only) { | |
| 3214 if (current_class == NULL) { | |
| 3215 return true; | |
| 3216 } | |
| 3217 if ((current_class == field_class) || access.is_public()) { | |
| 3218 return true; | |
| 3219 } | |
| 3220 | |
| 3221 if (access.is_protected()) { | |
| 3222 // See if current_class is a subclass of field_class | |
| 3223 if (Klass::cast(current_class)->is_subclass_of(field_class)) { | |
| 3224 return true; | |
| 3225 } | |
| 3226 } | |
| 3227 | |
| 3228 return (!access.is_private() && instanceKlass::cast(current_class)->is_same_class_package(field_class)); | |
| 3229 } | |
| 3230 | |
| 3231 | |
| 3232 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
| 3233 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
| 3234 JVMWrapper("JVM_AllocateNewObject"); | |
| 3235 JvmtiVMObjectAllocEventCollector oam; | |
| 3236 // Receiver is not used | |
| 3237 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
| 3238 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
| 3239 | |
| 3240 // Cannot instantiate primitive types | |
| 3241 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
| 3242 ResourceMark rm(THREAD); | |
| 3243 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3244 } | |
| 3245 | |
| 3246 // Arrays not allowed here, must use JVM_AllocateNewArray | |
| 3247 if (Klass::cast(java_lang_Class::as_klassOop(curr_mirror))->oop_is_javaArray() || | |
| 3248 Klass::cast(java_lang_Class::as_klassOop(init_mirror))->oop_is_javaArray()) { | |
| 3249 ResourceMark rm(THREAD); | |
| 3250 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3251 } | |
| 3252 | |
| 3253 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_klassOop(curr_mirror)); | |
| 3254 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_klassOop(init_mirror)); | |
| 3255 | |
| 3256 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
| 3257 | |
| 3258 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
| 3259 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
| 3260 | |
| 3261 // Make sure klass is initialized, since we are about to instantiate one of them. | |
| 3262 curr_klass->initialize(CHECK_NULL); | |
| 3263 | |
| 3264 methodHandle m (THREAD, | |
| 3265 init_klass->find_method(vmSymbols::object_initializer_name(), | |
| 3266 vmSymbols::void_method_signature())); | |
| 3267 if (m.is_null()) { | |
| 3268 ResourceMark rm(THREAD); | |
| 3269 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
| 3270 methodOopDesc::name_and_sig_as_C_string(Klass::cast(init_klass()), | |
| 3271 vmSymbols::object_initializer_name(), | |
| 3272 vmSymbols::void_method_signature())); | |
| 3273 } | |
| 3274 | |
| 3275 if (curr_klass == init_klass && !m->is_public()) { | |
| 3276 // Calling the constructor for class 'curr_klass'. | |
| 3277 // Only allow calls to a public no-arg constructor. | |
| 3278 // This path corresponds to creating an Externalizable object. | |
| 3279 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3280 } | |
| 3281 | |
| 3282 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
| 3283 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
| 3284 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3285 } | |
| 3286 | |
| 3287 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
| 3288 // Call constructor m. This might call a constructor higher up in the hierachy | |
| 3289 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
| 3290 | |
| 3291 return JNIHandles::make_local(obj()); | |
| 3292 JVM_END | |
| 3293 | |
| 3294 | |
| 3295 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
| 3296 JVMWrapper("JVM_AllocateNewArray"); | |
| 3297 JvmtiVMObjectAllocEventCollector oam; | |
| 3298 oop mirror = JNIHandles::resolve_non_null(currClass); | |
| 3299 | |
| 3300 if (java_lang_Class::is_primitive(mirror)) { | |
| 3301 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3302 } | |
| 3303 klassOop k = java_lang_Class::as_klassOop(mirror); | |
| 3304 oop result; | |
| 3305 | |
| 3306 if (k->klass_part()->oop_is_typeArray()) { | |
| 3307 // typeArray | |
| 3308 result = typeArrayKlass::cast(k)->allocate(length, CHECK_NULL); | |
| 3309 } else if (k->klass_part()->oop_is_objArray()) { | |
| 3310 // objArray | |
| 3311 objArrayKlassHandle oak(THREAD, k); | |
| 3312 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) | |
| 3313 result = oak->allocate(length, CHECK_NULL); | |
| 3314 } else { | |
| 3315 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3316 } | |
| 3317 return JNIHandles::make_local(env, result); | |
| 3318 JVM_END | |
| 3319 | |
| 3320 | |
| 3321 // Return the first non-null class loader up the execution stack, or null | |
| 3322 // if only code from the null class loader is on the stack. | |
| 3323 | |
| 3324 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
| 3325 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3326 // UseNewReflection | |
| 3327 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
| 3328 klassOop holder = vfst.method()->method_holder(); | |
| 3329 oop loader = instanceKlass::cast(holder)->class_loader(); | |
| 3330 if (loader != NULL) { | |
| 3331 return JNIHandles::make_local(env, loader); | |
| 3332 } | |
| 3333 } | |
| 3334 return NULL; | |
| 3335 JVM_END | |
| 3336 | |
| 3337 | |
| 3338 // Load a class relative to the most recent class on the stack with a non-null | |
| 3339 // classloader. | |
| 3340 // This function has been deprecated and should not be considered part of the | |
| 3341 // specified JVM interface. | |
| 3342 | |
| 3343 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
| 3344 jclass currClass, jstring currClassName)) | |
| 3345 JVMWrapper("JVM_LoadClass0"); | |
| 3346 // Receiver is not used | |
| 3347 ResourceMark rm(THREAD); | |
| 3348 | |
| 3349 // Class name argument is not guaranteed to be in internal format | |
| 3350 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
| 3351 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
| 3352 | |
| 3353 const char* str = java_lang_String::as_utf8_string(string()); | |
| 3354 | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
3355 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
| 0 | 3356 // It's impossible to create this class; the name cannot fit |
| 3357 // into the constant pool. | |
| 3358 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
| 3359 } | |
| 3360 | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
3361 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
| 0 | 3362 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
| 3363 // Find the most recent class on the stack with a non-null classloader | |
| 3364 oop loader = NULL; | |
| 3365 oop protection_domain = NULL; | |
| 3366 if (curr_klass.is_null()) { | |
| 3367 for (vframeStream vfst(thread); | |
| 3368 !vfst.at_end() && loader == NULL; | |
| 3369 vfst.next()) { | |
| 3370 if (!vfst.method()->is_native()) { | |
| 3371 klassOop holder = vfst.method()->method_holder(); | |
| 3372 loader = instanceKlass::cast(holder)->class_loader(); | |
| 3373 protection_domain = instanceKlass::cast(holder)->protection_domain(); | |
| 3374 } | |
| 3375 } | |
| 3376 } else { | |
| 3377 klassOop curr_klass_oop = java_lang_Class::as_klassOop(curr_klass()); | |
| 3378 loader = instanceKlass::cast(curr_klass_oop)->class_loader(); | |
| 3379 protection_domain = instanceKlass::cast(curr_klass_oop)->protection_domain(); | |
| 3380 } | |
| 3381 Handle h_loader(THREAD, loader); | |
| 3382 Handle h_prot (THREAD, protection_domain); | |
|
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3383 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
|
3384 false, thread); |
|
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3385 if (TraceClassResolution && result != NULL) { |
|
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3386 trace_class_resolution(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(result))); |
|
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3387 } |
|
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3388 return result; |
| 0 | 3389 JVM_END |
| 3390 | |
| 3391 | |
| 3392 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
| 3393 | |
| 3394 | |
| 3395 // resolve array handle and check arguments | |
| 3396 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
| 3397 if (arr == NULL) { | |
| 3398 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 3399 } | |
| 3400 oop a = JNIHandles::resolve_non_null(arr); | |
| 3401 if (!a->is_javaArray() || (type_array_only && !a->is_typeArray())) { | |
| 3402 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); | |
| 3403 } | |
| 3404 return arrayOop(a); | |
| 3405 } | |
| 3406 | |
| 3407 | |
| 3408 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
| 3409 JVMWrapper("JVM_GetArrayLength"); | |
| 3410 arrayOop a = check_array(env, arr, false, CHECK_0); | |
| 3411 return a->length(); | |
| 3412 JVM_END | |
| 3413 | |
| 3414 | |
| 3415 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
| 3416 JVMWrapper("JVM_Array_Get"); | |
| 3417 JvmtiVMObjectAllocEventCollector oam; | |
| 3418 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
| 3419 jvalue value; | |
| 3420 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
| 3421 oop box = Reflection::box(&value, type, CHECK_NULL); | |
| 3422 return JNIHandles::make_local(env, box); | |
| 3423 JVM_END | |
| 3424 | |
| 3425 | |
| 3426 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
| 3427 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
| 3428 jvalue value; | |
| 3429 value.i = 0; // to initialize value before getting used in CHECK | |
| 3430 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
| 3431 assert(a->is_typeArray(), "just checking"); | |
| 3432 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
| 3433 BasicType wide_type = (BasicType) wCode; | |
| 3434 if (type != wide_type) { | |
| 3435 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
| 3436 } | |
| 3437 return value; | |
| 3438 JVM_END | |
| 3439 | |
| 3440 | |
| 3441 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
| 3442 JVMWrapper("JVM_SetArrayElement"); | |
| 3443 arrayOop a = check_array(env, arr, false, CHECK); | |
| 3444 oop box = JNIHandles::resolve(val); | |
| 3445 jvalue value; | |
| 3446 value.i = 0; // to initialize value before getting used in CHECK | |
| 3447 BasicType value_type; | |
| 3448 if (a->is_objArray()) { | |
| 3449 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
| 3450 value_type = Reflection::unbox_for_regular_object(box, &value); | |
| 3451 } else { | |
| 3452 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
| 3453 } | |
| 3454 Reflection::array_set(&value, a, index, value_type, CHECK); | |
| 3455 JVM_END | |
| 3456 | |
| 3457 | |
| 3458 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
| 3459 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
| 3460 arrayOop a = check_array(env, arr, true, CHECK); | |
| 3461 assert(a->is_typeArray(), "just checking"); | |
| 3462 BasicType value_type = (BasicType) vCode; | |
| 3463 Reflection::array_set(&v, a, index, value_type, CHECK); | |
| 3464 JVM_END | |
| 3465 | |
| 3466 | |
| 3467 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
| 3468 JVMWrapper("JVM_NewArray"); | |
| 3469 JvmtiVMObjectAllocEventCollector oam; | |
| 3470 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3471 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
| 3472 return JNIHandles::make_local(env, result); | |
| 3473 JVM_END | |
| 3474 | |
| 3475 | |
| 3476 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
| 3477 JVMWrapper("JVM_NewMultiArray"); | |
| 3478 JvmtiVMObjectAllocEventCollector oam; | |
| 3479 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
| 3480 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3481 assert(dim_array->is_typeArray(), "just checking"); | |
| 3482 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
| 3483 return JNIHandles::make_local(env, result); | |
| 3484 JVM_END | |
| 3485 | |
| 3486 | |
| 3487 // Networking library support //////////////////////////////////////////////////////////////////// | |
| 3488 | |
| 3489 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
| 3490 JVMWrapper("JVM_InitializeSocketLibrary"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3491 return 0; |
| 0 | 3492 JVM_END |
| 3493 | |
| 3494 | |
| 3495 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
| 3496 JVMWrapper("JVM_Socket"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3497 return os::socket(domain, type, protocol); |
| 0 | 3498 JVM_END |
| 3499 | |
| 3500 | |
| 3501 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
| 3502 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
| 3503 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3504 return os::socket_close(fd); |
| 0 | 3505 JVM_END |
| 3506 | |
| 3507 | |
| 3508 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
| 3509 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
| 3510 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3511 return os::socket_shutdown(fd, howto); |
| 0 | 3512 JVM_END |
| 3513 | |
| 3514 | |
| 3515 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3516 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
| 3517 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3518 return os::recv(fd, buf, (size_t)nBytes, (uint)flags); |
| 0 | 3519 JVM_END |
| 3520 | |
| 3521 | |
| 3522 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3523 JVMWrapper2("JVM_Send (0x%x)", fd); | |
| 3524 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3525 return os::send(fd, buf, (size_t)nBytes, (uint)flags); |
| 0 | 3526 JVM_END |
| 3527 | |
| 3528 | |
| 3529 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
| 3530 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
| 3531 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3532 return os::timeout(fd, timeout); |
| 0 | 3533 JVM_END |
| 3534 | |
| 3535 | |
| 3536 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
| 3537 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
| 3538 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3539 return os::listen(fd, count); |
| 0 | 3540 JVM_END |
| 3541 | |
| 3542 | |
| 3543 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
| 3544 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
| 3545 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3546 return os::connect(fd, him, (socklen_t)len); |
| 0 | 3547 JVM_END |
| 3548 | |
| 3549 | |
| 3550 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
| 3551 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
| 3552 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3553 return os::bind(fd, him, (socklen_t)len); |
| 0 | 3554 JVM_END |
| 3555 | |
| 3556 | |
| 3557 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
| 3558 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
| 3559 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3560 socklen_t socklen = (socklen_t)(*len); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3561 jint result = os::accept(fd, him, &socklen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3562 *len = (jint)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3563 return result; |
| 0 | 3564 JVM_END |
| 3565 | |
| 3566 | |
| 3567 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
| 3568 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
| 3569 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3570 socklen_t socklen = (socklen_t)(*fromlen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3571 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
|
3572 *fromlen = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3573 return result; |
| 0 | 3574 JVM_END |
| 3575 | |
| 3576 | |
| 3577 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
| 3578 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
| 3579 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3580 socklen_t socklen = (socklen_t)(*len); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3581 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
|
3582 *len = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3583 return result; |
| 0 | 3584 JVM_END |
| 3585 | |
| 3586 | |
| 3587 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
| 3588 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
| 3589 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3590 return os::sendto(fd, buf, (size_t)len, (uint)flags, to, (socklen_t)tolen); |
| 0 | 3591 JVM_END |
| 3592 | |
| 3593 | |
| 3594 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
| 3595 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
| 3596 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3597 return os::socket_available(fd, pbytes); |
| 0 | 3598 JVM_END |
| 3599 | |
| 3600 | |
| 3601 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
| 3602 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
| 3603 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3604 socklen_t socklen = (socklen_t)(*optlen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3605 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
|
3606 *optlen = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3607 return result; |
| 0 | 3608 JVM_END |
| 3609 | |
| 3610 | |
| 3611 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
| 3612 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
| 3613 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3614 return os::set_sock_opt(fd, level, optname, optval, (socklen_t)optlen); |
| 0 | 3615 JVM_END |
| 3616 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3617 |
| 0 | 3618 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) |
| 3619 JVMWrapper("JVM_GetHostName"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3620 return os::get_host_name(name, namelen); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3621 JVM_END |
| 0 | 3622 |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3623 |
| 0 | 3624 // Library support /////////////////////////////////////////////////////////////////////////// |
| 3625 | |
| 3626 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
| 3627 //%note jvm_ct | |
| 3628 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
| 3629 char ebuf[1024]; | |
| 3630 void *load_result; | |
| 3631 { | |
| 3632 ThreadToNativeFromVM ttnfvm(thread); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3633 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
| 0 | 3634 } |
| 3635 if (load_result == NULL) { | |
| 3636 char msg[1024]; | |
| 3637 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
| 3638 // Since 'ebuf' may contain a string encoded using | |
| 3639 // platform encoding scheme, we need to pass | |
| 3640 // Exceptions::unsafe_to_utf8 to the new_exception method | |
| 3641 // as the last argument. See bug 6367357. | |
| 3642 Handle h_exception = | |
| 3643 Exceptions::new_exception(thread, | |
| 3644 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
| 3645 msg, Exceptions::unsafe_to_utf8); | |
| 3646 | |
| 3647 THROW_HANDLE_0(h_exception); | |
| 3648 } | |
| 3649 return load_result; | |
| 3650 JVM_END | |
| 3651 | |
| 3652 | |
| 3653 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
| 3654 JVMWrapper("JVM_UnloadLibrary"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3655 os::dll_unload(handle); |
| 0 | 3656 JVM_END |
| 3657 | |
| 3658 | |
| 3659 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
| 3660 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3661 return os::dll_lookup(handle, name); |
| 0 | 3662 JVM_END |
| 3663 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3664 |
| 0 | 3665 // Floating point support //////////////////////////////////////////////////////////////////// |
| 3666 | |
| 3667 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
| 3668 JVMWrapper("JVM_IsNaN"); | |
| 3669 return g_isnan(a); | |
| 3670 JVM_END | |
| 3671 | |
| 3672 | |
| 3673 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
| 3674 | |
| 3675 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
| 3676 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
| 3677 return Threads::is_supported_jni_version_including_1_1(version); | |
| 3678 JVM_END | |
| 3679 | |
| 3680 | |
| 3681 // String support /////////////////////////////////////////////////////////////////////////// | |
| 3682 | |
| 3683 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
| 3684 JVMWrapper("JVM_InternString"); | |
| 3685 JvmtiVMObjectAllocEventCollector oam; | |
| 3686 if (str == NULL) return NULL; | |
| 3687 oop string = JNIHandles::resolve_non_null(str); | |
| 3688 oop result = StringTable::intern(string, CHECK_NULL); | |
| 3689 return (jstring) JNIHandles::make_local(env, result); | |
| 3690 JVM_END | |
| 3691 | |
| 3692 | |
| 3693 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
| 3694 | |
| 3695 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
| 3696 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
| 3697 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
| 3698 // that only works with java threads. | |
| 3699 | |
| 3700 | |
| 3701 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
| 3702 VM_Exit::block_if_vm_exited(); | |
| 3703 JVMWrapper("JVM_RawMonitorCreate"); | |
| 3704 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
| 3705 } | |
| 3706 | |
| 3707 | |
| 3708 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
| 3709 VM_Exit::block_if_vm_exited(); | |
| 3710 JVMWrapper("JVM_RawMonitorDestroy"); | |
| 3711 delete ((Mutex*) mon); | |
| 3712 } | |
| 3713 | |
| 3714 | |
| 3715 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
| 3716 VM_Exit::block_if_vm_exited(); | |
| 3717 JVMWrapper("JVM_RawMonitorEnter"); | |
| 3718 ((Mutex*) mon)->jvm_raw_lock(); | |
| 3719 return 0; | |
| 3720 } | |
| 3721 | |
| 3722 | |
| 3723 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
| 3724 VM_Exit::block_if_vm_exited(); | |
| 3725 JVMWrapper("JVM_RawMonitorExit"); | |
| 3726 ((Mutex*) mon)->jvm_raw_unlock(); | |
| 3727 } | |
| 3728 | |
| 3729 | |
| 3730 // Support for Serialization | |
| 3731 | |
| 3732 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
| 3733 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
| 3734 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
| 3735 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
| 3736 | |
| 3737 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
| 3738 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
| 3739 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
| 3740 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
| 3741 | |
| 3742 | |
| 3743 void initialize_converter_functions() { | |
| 3744 if (JDK_Version::is_gte_jdk14x_version()) { | |
| 3745 // These functions only exist for compatibility with 1.3.1 and earlier | |
| 3746 return; | |
| 3747 } | |
| 3748 | |
| 3749 // called from universe_post_init() | |
| 3750 assert( | |
| 3751 int_bits_to_float_fn == NULL && | |
| 3752 long_bits_to_double_fn == NULL && | |
| 3753 float_to_int_bits_fn == NULL && | |
| 3754 double_to_long_bits_fn == NULL , | |
| 3755 "initialization done twice" | |
| 3756 ); | |
| 3757 // initialize | |
| 3758 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
| 3759 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
| 3760 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
| 3761 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
| 3762 // verify | |
| 3763 assert( | |
| 3764 int_bits_to_float_fn != NULL && | |
| 3765 long_bits_to_double_fn != NULL && | |
| 3766 float_to_int_bits_fn != NULL && | |
| 3767 double_to_long_bits_fn != NULL , | |
| 3768 "initialization failed" | |
| 3769 ); | |
| 3770 } | |
| 3771 | |
| 3772 | |
| 3773 // Serialization | |
| 3774 JVM_ENTRY(void, JVM_SetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
| 3775 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
| 3776 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
| 3777 | |
| 3778 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
| 3779 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
| 3780 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
| 3781 oop o = JNIHandles::resolve(obj); | |
| 3782 | |
| 3783 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
| 3784 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 3785 } | |
| 3786 | |
| 3787 jsize nfids = fids->length(); | |
| 3788 if (nfids == 0) return; | |
| 3789 | |
| 3790 if (tcodes->length() < nfids) { | |
| 3791 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
| 3792 } | |
| 3793 | |
| 3794 jsize off = 0; | |
| 3795 /* loop through fields, setting values */ | |
| 3796 for (jsize i = 0; i < nfids; i++) { | |
| 3797 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
| 3798 int field_offset; | |
| 3799 if (fid != NULL) { | |
| 3800 // NULL is a legal value for fid, but retrieving the field offset | |
| 3801 // trigger assertion in that case | |
| 3802 field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 3803 } | |
| 3804 | |
| 3805 switch (tcodes->char_at(i)) { | |
| 3806 case 'Z': | |
| 3807 if (fid != NULL) { | |
| 3808 jboolean val = (dbuf->byte_at(off) != 0) ? JNI_TRUE : JNI_FALSE; | |
| 3809 o->bool_field_put(field_offset, val); | |
| 3810 } | |
| 3811 off++; | |
| 3812 break; | |
| 3813 | |
| 3814 case 'B': | |
| 3815 if (fid != NULL) { | |
| 3816 o->byte_field_put(field_offset, dbuf->byte_at(off)); | |
| 3817 } | |
| 3818 off++; | |
| 3819 break; | |
| 3820 | |
| 3821 case 'C': | |
| 3822 if (fid != NULL) { | |
| 3823 jchar val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
| 3824 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
| 3825 o->char_field_put(field_offset, val); | |
| 3826 } | |
| 3827 off += 2; | |
| 3828 break; | |
| 3829 | |
| 3830 case 'S': | |
| 3831 if (fid != NULL) { | |
| 3832 jshort val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
| 3833 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
| 3834 o->short_field_put(field_offset, val); | |
| 3835 } | |
| 3836 off += 2; | |
| 3837 break; | |
| 3838 | |
| 3839 case 'I': | |
| 3840 if (fid != NULL) { | |
| 3841 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
| 3842 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
| 3843 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
| 3844 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
| 3845 o->int_field_put(field_offset, ival); | |
| 3846 } | |
| 3847 off += 4; | |
| 3848 break; | |
| 3849 | |
| 3850 case 'F': | |
| 3851 if (fid != NULL) { | |
| 3852 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
| 3853 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
| 3854 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
| 3855 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
| 3856 jfloat fval = (*int_bits_to_float_fn)(env, NULL, ival); | |
| 3857 o->float_field_put(field_offset, fval); | |
| 3858 } | |
| 3859 off += 4; | |
| 3860 break; | |
| 3861 | |
| 3862 case 'J': | |
| 3863 if (fid != NULL) { | |
| 3864 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
| 3865 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
| 3866 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
| 3867 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
| 3868 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
| 3869 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
| 3870 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
| 3871 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
| 3872 o->long_field_put(field_offset, lval); | |
| 3873 } | |
| 3874 off += 8; | |
| 3875 break; | |
| 3876 | |
| 3877 case 'D': | |
| 3878 if (fid != NULL) { | |
| 3879 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
| 3880 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
| 3881 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
| 3882 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
| 3883 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
| 3884 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
| 3885 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
| 3886 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
| 3887 jdouble dval = (*long_bits_to_double_fn)(env, NULL, lval); | |
| 3888 o->double_field_put(field_offset, dval); | |
| 3889 } | |
| 3890 off += 8; | |
| 3891 break; | |
| 3892 | |
| 3893 default: | |
| 3894 // Illegal typecode | |
| 3895 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
| 3896 } | |
| 3897 } | |
| 3898 JVM_END | |
| 3899 | |
| 3900 | |
| 3901 JVM_ENTRY(void, JVM_GetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
| 3902 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
| 3903 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
| 3904 | |
| 3905 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
| 3906 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
| 3907 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
| 3908 oop o = JNIHandles::resolve(obj); | |
| 3909 | |
| 3910 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
| 3911 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 3912 } | |
| 3913 | |
| 3914 jsize nfids = fids->length(); | |
| 3915 if (nfids == 0) return; | |
| 3916 | |
| 3917 if (tcodes->length() < nfids) { | |
| 3918 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
| 3919 } | |
| 3920 | |
| 3921 /* loop through fields, fetching values */ | |
| 3922 jsize off = 0; | |
| 3923 for (jsize i = 0; i < nfids; i++) { | |
| 3924 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
| 3925 if (fid == NULL) { | |
| 3926 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 3927 } | |
| 3928 int field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 3929 | |
| 3930 switch (tcodes->char_at(i)) { | |
| 3931 case 'Z': | |
| 3932 { | |
| 3933 jboolean val = o->bool_field(field_offset); | |
| 3934 dbuf->byte_at_put(off++, (val != 0) ? 1 : 0); | |
| 3935 } | |
| 3936 break; | |
| 3937 | |
| 3938 case 'B': | |
| 3939 dbuf->byte_at_put(off++, o->byte_field(field_offset)); | |
| 3940 break; | |
| 3941 | |
| 3942 case 'C': | |
| 3943 { | |
| 3944 jchar val = o->char_field(field_offset); | |
| 3945 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 3946 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 3947 } | |
| 3948 break; | |
| 3949 | |
| 3950 case 'S': | |
| 3951 { | |
| 3952 jshort val = o->short_field(field_offset); | |
| 3953 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 3954 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 3955 } | |
| 3956 break; | |
| 3957 | |
| 3958 case 'I': | |
| 3959 { | |
| 3960 jint val = o->int_field(field_offset); | |
| 3961 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
| 3962 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
| 3963 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 3964 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 3965 } | |
| 3966 break; | |
| 3967 | |
| 3968 case 'F': | |
| 3969 { | |
| 3970 jfloat fval = o->float_field(field_offset); | |
| 3971 jint ival = (*float_to_int_bits_fn)(env, NULL, fval); | |
| 3972 dbuf->byte_at_put(off++, (ival >> 24) & 0xFF); | |
| 3973 dbuf->byte_at_put(off++, (ival >> 16) & 0xFF); | |
| 3974 dbuf->byte_at_put(off++, (ival >> 8) & 0xFF); | |
| 3975 dbuf->byte_at_put(off++, (ival >> 0) & 0xFF); | |
| 3976 } | |
| 3977 break; | |
| 3978 | |
| 3979 case 'J': | |
| 3980 { | |
| 3981 jlong val = o->long_field(field_offset); | |
| 3982 dbuf->byte_at_put(off++, (val >> 56) & 0xFF); | |
| 3983 dbuf->byte_at_put(off++, (val >> 48) & 0xFF); | |
| 3984 dbuf->byte_at_put(off++, (val >> 40) & 0xFF); | |
| 3985 dbuf->byte_at_put(off++, (val >> 32) & 0xFF); | |
| 3986 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
| 3987 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
| 3988 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 3989 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 3990 } | |
| 3991 break; | |
| 3992 | |
| 3993 case 'D': | |
| 3994 { | |
| 3995 jdouble dval = o->double_field(field_offset); | |
| 3996 jlong lval = (*double_to_long_bits_fn)(env, NULL, dval); | |
| 3997 dbuf->byte_at_put(off++, (lval >> 56) & 0xFF); | |
| 3998 dbuf->byte_at_put(off++, (lval >> 48) & 0xFF); | |
| 3999 dbuf->byte_at_put(off++, (lval >> 40) & 0xFF); | |
| 4000 dbuf->byte_at_put(off++, (lval >> 32) & 0xFF); | |
| 4001 dbuf->byte_at_put(off++, (lval >> 24) & 0xFF); | |
| 4002 dbuf->byte_at_put(off++, (lval >> 16) & 0xFF); | |
| 4003 dbuf->byte_at_put(off++, (lval >> 8) & 0xFF); | |
| 4004 dbuf->byte_at_put(off++, (lval >> 0) & 0xFF); | |
| 4005 } | |
| 4006 break; | |
| 4007 | |
| 4008 default: | |
| 4009 // Illegal typecode | |
| 4010 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
| 4011 } | |
| 4012 } | |
| 4013 JVM_END | |
| 4014 | |
| 4015 | |
| 4016 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
| 4017 | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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parents:
2162
diff
changeset
|
4018 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS) { |
| 0 | 4019 // Security Note: |
| 4020 // The Java level wrapper will perform the necessary security check allowing | |
| 4021 // us to pass the NULL as the initiating class loader. | |
| 4022 klassOop 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
|
4023 |
| 0 | 4024 KlassHandle klass_handle(THREAD, klass); |
| 4025 // Check if we should initialize the class | |
| 4026 if (init && klass_handle->oop_is_instance()) { | |
| 4027 klass_handle->initialize(CHECK_NULL); | |
| 4028 } | |
| 4029 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
| 4030 } | |
| 4031 | |
| 4032 | |
| 4033 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
| 4034 | |
| 4035 #ifndef PRODUCT | |
| 4036 | |
| 4037 extern "C" { | |
| 4038 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
| 4039 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
| 4040 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
| 4041 } | |
| 4042 | |
| 4043 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
| 4044 JVMWrapper("JVM_AccessBoolVMFlag"); | |
| 4045 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, INTERNAL); | |
| 4046 JVM_END | |
| 4047 | |
| 4048 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
| 4049 JVMWrapper("JVM_AccessVMIntFlag"); | |
| 4050 intx v; | |
| 4051 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, INTERNAL); | |
| 4052 *value = (jint)v; | |
| 4053 return result; | |
| 4054 JVM_END | |
| 4055 | |
| 4056 | |
| 4057 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
| 4058 JVMWrapper("JVM_VMBreakPoint"); | |
| 4059 oop the_obj = JNIHandles::resolve(obj); | |
| 4060 BREAKPOINT; | |
| 4061 JVM_END | |
| 4062 | |
| 4063 | |
| 4064 #endif | |
| 4065 | |
| 4066 | |
| 4067 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4068 | |
| 4069 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
| 4070 JVMWrapper("JVM_InvokeMethod"); | |
| 4071 Handle method_handle; | |
| 4072 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
| 4073 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
| 4074 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
| 4075 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4076 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
| 4077 jobject res = JNIHandles::make_local(env, result); | |
| 4078 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4079 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
| 4080 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
| 4081 if (java_lang_Class::is_primitive(ret_type)) { | |
| 4082 // Only for primitive type vm allocates memory for java object. | |
| 4083 // See box() method. | |
| 4084 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4085 } | |
| 4086 } | |
| 4087 return res; | |
| 4088 } else { | |
| 4089 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
| 4090 } | |
| 4091 JVM_END | |
| 4092 | |
| 4093 | |
| 4094 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
| 4095 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
| 4096 oop constructor_mirror = JNIHandles::resolve(c); | |
| 4097 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4098 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
| 4099 jobject res = JNIHandles::make_local(env, result); | |
| 4100 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4101 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4102 } | |
| 4103 return res; | |
| 4104 JVM_END | |
| 4105 | |
| 4106 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4107 | |
| 4108 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
| 4109 JVMWrapper("JVM_SupportsCX8"); | |
| 4110 return VM_Version::supports_cx8(); | |
| 4111 JVM_END | |
| 4112 | |
| 4113 | |
| 4114 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
| 4115 JVMWrapper("JVM_CX8Field"); | |
| 4116 jlong res; | |
| 4117 oop o = JNIHandles::resolve(obj); | |
| 4118 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 4119 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
| 4120 | |
| 4121 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
| 4122 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
| 4123 | |
| 4124 return res == oldVal; | |
| 4125 JVM_END | |
| 4126 | |
|
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4127 // DTrace /////////////////////////////////////////////////////////////////// |
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4128 |
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4129 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
|
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4130 JVMWrapper("JVM_DTraceGetVersion"); |
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4131 return (jint)JVM_TRACING_DTRACE_VERSION; |
|
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4132 JVM_END |
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4133 |
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4134 JVM_ENTRY(jlong,JVM_DTraceActivate( |
|
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4135 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
|
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4136 JVM_DTraceProvider* providers)) |
|
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4137 JVMWrapper("JVM_DTraceActivate"); |
|
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4138 return DTraceJSDT::activate( |
|
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4139 version, module_name, providers_count, providers, CHECK_0); |
|
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4140 JVM_END |
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4141 |
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4142 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
|
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4143 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
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4144 return DTraceJSDT::is_probe_enabled(method); |
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4145 JVM_END |
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4146 |
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4147 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
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4148 JVMWrapper("JVM_DTraceDispose"); |
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4149 DTraceJSDT::dispose(handle); |
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4150 JVM_END |
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4151 |
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4152 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
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4153 JVMWrapper("JVM_DTraceIsSupported"); |
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4154 return DTraceJSDT::is_supported(); |
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4155 JVM_END |
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4156 |
| 0 | 4157 // Returns an array of all live Thread objects (VM internal JavaThreads, |
| 4158 // jvmti agent threads, and JNI attaching threads are skipped) | |
| 4159 // See CR 6404306 regarding JNI attaching threads | |
| 4160 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
| 4161 ResourceMark rm(THREAD); | |
| 4162 ThreadsListEnumerator tle(THREAD, false, false); | |
| 4163 JvmtiVMObjectAllocEventCollector oam; | |
| 4164 | |
| 4165 int num_threads = tle.num_threads(); | |
| 1142 | 4166 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
| 0 | 4167 objArrayHandle threads_ah(THREAD, r); |
| 4168 | |
| 4169 for (int i = 0; i < num_threads; i++) { | |
| 4170 Handle h = tle.get_threadObj(i); | |
| 4171 threads_ah->obj_at_put(i, h()); | |
| 4172 } | |
| 4173 | |
| 4174 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
| 4175 JVM_END | |
| 4176 | |
| 4177 | |
| 4178 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
| 4179 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
| 4180 // the corresponding entry in the given threads array | |
| 4181 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
| 4182 JVMWrapper("JVM_DumpThreads"); | |
| 4183 JvmtiVMObjectAllocEventCollector oam; | |
| 4184 | |
| 4185 // Check if threads is null | |
| 4186 if (threads == NULL) { | |
| 4187 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4188 } | |
| 4189 | |
| 4190 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
| 4191 objArrayHandle ah(THREAD, a); | |
| 4192 int num_threads = ah->length(); | |
| 4193 // check if threads is non-empty array | |
| 4194 if (num_threads == 0) { | |
| 4195 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
| 4196 } | |
| 4197 | |
| 4198 // check if threads is not an array of objects of Thread class | |
| 4199 klassOop k = objArrayKlass::cast(ah->klass())->element_klass(); | |
| 1142 | 4200 if (k != SystemDictionary::Thread_klass()) { |
| 0 | 4201 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
| 4202 } | |
| 4203 | |
| 4204 ResourceMark rm(THREAD); | |
| 4205 | |
| 4206 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
| 4207 for (int i = 0; i < num_threads; i++) { | |
| 4208 oop thread_obj = ah->obj_at(i); | |
| 4209 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
| 4210 thread_handle_array->append(h); | |
| 4211 } | |
| 4212 | |
| 4213 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
| 4214 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
| 4215 | |
| 4216 JVM_END | |
| 4217 | |
| 4218 // JVM monitoring and management support | |
| 4219 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
| 4220 return Management::get_jmm_interface(version); | |
| 4221 JVM_END | |
| 4222 | |
| 4223 // com.sun.tools.attach.VirtualMachine agent properties support | |
| 4224 // | |
| 4225 // Initialize the agent properties with the properties maintained in the VM | |
| 4226 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
| 4227 JVMWrapper("JVM_InitAgentProperties"); | |
| 4228 ResourceMark rm; | |
| 4229 | |
| 4230 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
| 4231 | |
| 4232 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
| 4233 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
| 4234 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
| 4235 return properties; | |
| 4236 JVM_END | |
| 4237 | |
| 4238 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
| 4239 { | |
| 4240 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
| 4241 JvmtiVMObjectAllocEventCollector oam; | |
| 4242 | |
| 4243 if (ofClass == NULL) { | |
| 4244 return NULL; | |
| 4245 } | |
| 4246 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
| 4247 // Special handling for primitive objects | |
| 4248 if (java_lang_Class::is_primitive(mirror())) { | |
| 4249 return NULL; | |
| 4250 } | |
| 4251 klassOop k = java_lang_Class::as_klassOop(mirror()); | |
| 4252 if (!Klass::cast(k)->oop_is_instance()) { | |
| 4253 return NULL; | |
| 4254 } | |
| 4255 instanceKlassHandle ik_h(THREAD, k); | |
| 4256 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
| 4257 if (encl_method_class_idx == 0) { | |
| 4258 return NULL; | |
| 4259 } | |
| 1142 | 4260 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
| 0 | 4261 objArrayHandle dest(THREAD, dest_o); |
| 4262 klassOop enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); | |
| 4263 dest->obj_at_put(0, Klass::cast(enc_k)->java_mirror()); | |
| 4264 int encl_method_method_idx = ik_h->enclosing_method_method_index(); | |
| 4265 if (encl_method_method_idx != 0) { | |
|
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4266 Symbol* sym = ik_h->constants()->symbol_at( |
| 0 | 4267 extract_low_short_from_int( |
| 4268 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4269 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4270 dest->obj_at_put(1, str()); | |
|
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4271 sym = ik_h->constants()->symbol_at( |
| 0 | 4272 extract_high_short_from_int( |
| 4273 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4274 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4275 dest->obj_at_put(2, str()); | |
| 4276 } | |
| 4277 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 4278 } | |
| 4279 JVM_END | |
| 4280 | |
| 4281 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
| 4282 jint javaThreadState)) | |
| 4283 { | |
| 4284 // If new thread states are added in future JDK and VM versions, | |
| 4285 // this should check if the JDK version is compatible with thread | |
| 4286 // states supported by the VM. Return NULL if not compatible. | |
| 4287 // | |
| 4288 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4289 // to the Java thread state that the JDK supports. | |
| 4290 // | |
| 4291 | |
| 4292 typeArrayHandle values_h; | |
| 4293 switch (javaThreadState) { | |
| 4294 case JAVA_THREAD_STATE_NEW : { | |
| 4295 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4296 values_h = typeArrayHandle(THREAD, r); | |
| 4297 values_h->int_at_put(0, java_lang_Thread::NEW); | |
| 4298 break; | |
| 4299 } | |
| 4300 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4301 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4302 values_h = typeArrayHandle(THREAD, r); | |
| 4303 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
| 4304 break; | |
| 4305 } | |
| 4306 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4307 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4308 values_h = typeArrayHandle(THREAD, r); | |
| 4309 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
| 4310 break; | |
| 4311 } | |
| 4312 case JAVA_THREAD_STATE_WAITING : { | |
| 4313 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
| 4314 values_h = typeArrayHandle(THREAD, r); | |
| 4315 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
| 4316 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
| 4317 break; | |
| 4318 } | |
| 4319 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4320 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
| 4321 values_h = typeArrayHandle(THREAD, r); | |
| 4322 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
| 4323 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
| 4324 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
| 4325 break; | |
| 4326 } | |
| 4327 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4328 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4329 values_h = typeArrayHandle(THREAD, r); | |
| 4330 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
| 4331 break; | |
| 4332 } | |
| 4333 default: | |
| 4334 // Unknown state - probably incompatible JDK version | |
| 4335 return NULL; | |
| 4336 } | |
| 4337 | |
| 4338 return (jintArray) JNIHandles::make_local(env, values_h()); | |
| 4339 } | |
| 4340 JVM_END | |
| 4341 | |
| 4342 | |
| 4343 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
| 4344 jint javaThreadState, | |
| 4345 jintArray values)) | |
| 4346 { | |
| 4347 // If new thread states are added in future JDK and VM versions, | |
| 4348 // this should check if the JDK version is compatible with thread | |
| 4349 // states supported by the VM. Return NULL if not compatible. | |
| 4350 // | |
| 4351 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4352 // to the Java thread state that the JDK supports. | |
| 4353 // | |
| 4354 | |
| 4355 ResourceMark rm; | |
| 4356 | |
| 4357 // Check if threads is null | |
| 4358 if (values == NULL) { | |
| 4359 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4360 } | |
| 4361 | |
| 4362 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
| 4363 typeArrayHandle values_h(THREAD, v); | |
| 4364 | |
| 4365 objArrayHandle names_h; | |
| 4366 switch (javaThreadState) { | |
| 4367 case JAVA_THREAD_STATE_NEW : { | |
| 4368 assert(values_h->length() == 1 && | |
| 4369 values_h->int_at(0) == java_lang_Thread::NEW, | |
| 4370 "Invalid threadStatus value"); | |
| 4371 | |
| 1142 | 4372 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4373 1, /* only 1 substate */ |
| 4374 CHECK_NULL); | |
| 4375 names_h = objArrayHandle(THREAD, r); | |
| 4376 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
| 4377 names_h->obj_at_put(0, name()); | |
| 4378 break; | |
| 4379 } | |
| 4380 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4381 assert(values_h->length() == 1 && | |
| 4382 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
| 4383 "Invalid threadStatus value"); | |
| 4384 | |
| 1142 | 4385 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4386 1, /* only 1 substate */ |
| 4387 CHECK_NULL); | |
| 4388 names_h = objArrayHandle(THREAD, r); | |
| 4389 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
| 4390 names_h->obj_at_put(0, name()); | |
| 4391 break; | |
| 4392 } | |
| 4393 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4394 assert(values_h->length() == 1 && | |
| 4395 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
| 4396 "Invalid threadStatus value"); | |
| 4397 | |
| 1142 | 4398 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4399 1, /* only 1 substate */ |
| 4400 CHECK_NULL); | |
| 4401 names_h = objArrayHandle(THREAD, r); | |
| 4402 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
| 4403 names_h->obj_at_put(0, name()); | |
| 4404 break; | |
| 4405 } | |
| 4406 case JAVA_THREAD_STATE_WAITING : { | |
| 4407 assert(values_h->length() == 2 && | |
| 4408 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
| 4409 values_h->int_at(1) == java_lang_Thread::PARKED, | |
| 4410 "Invalid threadStatus value"); | |
| 1142 | 4411 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4412 2, /* number of substates */ |
| 4413 CHECK_NULL); | |
| 4414 names_h = objArrayHandle(THREAD, r); | |
| 4415 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
| 4416 CHECK_NULL); | |
| 4417 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
| 4418 CHECK_NULL); | |
| 4419 names_h->obj_at_put(0, name0()); | |
| 4420 names_h->obj_at_put(1, name1()); | |
| 4421 break; | |
| 4422 } | |
| 4423 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4424 assert(values_h->length() == 3 && | |
| 4425 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
| 4426 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
| 4427 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
| 4428 "Invalid threadStatus value"); | |
| 1142 | 4429 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4430 3, /* number of substates */ |
| 4431 CHECK_NULL); | |
| 4432 names_h = objArrayHandle(THREAD, r); | |
| 4433 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
| 4434 CHECK_NULL); | |
| 4435 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
| 4436 CHECK_NULL); | |
| 4437 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
| 4438 CHECK_NULL); | |
| 4439 names_h->obj_at_put(0, name0()); | |
| 4440 names_h->obj_at_put(1, name1()); | |
| 4441 names_h->obj_at_put(2, name2()); | |
| 4442 break; | |
| 4443 } | |
| 4444 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4445 assert(values_h->length() == 1 && | |
| 4446 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
| 4447 "Invalid threadStatus value"); | |
| 1142 | 4448 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4449 1, /* only 1 substate */ |
| 4450 CHECK_NULL); | |
| 4451 names_h = objArrayHandle(THREAD, r); | |
| 4452 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
| 4453 names_h->obj_at_put(0, name()); | |
| 4454 break; | |
| 4455 } | |
| 4456 default: | |
| 4457 // Unknown state - probably incompatible JDK version | |
| 4458 return NULL; | |
| 4459 } | |
| 4460 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
| 4461 } | |
| 4462 JVM_END | |
| 4463 | |
| 4464 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
| 4465 { | |
| 4466 memset(info, 0, sizeof(info_size)); | |
| 4467 | |
| 4468 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
| 4469 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4470 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4471 | |
| 4472 // when we add a new capability in the jvm_version_info struct, we should also | |
| 4473 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
| 4474 // counter defined in runtimeService.cpp. | |
| 4475 info->is_attachable = AttachListener::is_attach_supported(); | |
| 4476 #ifdef KERNEL | |
| 4477 info->is_kernel_jvm = 1; // true; | |
| 4478 #else // KERNEL | |
| 4479 info->is_kernel_jvm = 0; // false; | |
| 4480 #endif // KERNEL | |
| 4481 } | |
| 4482 JVM_END |