Mercurial > hg > truffle
annotate src/share/vm/prims/jvm.cpp @ 6213:8150fa46d2ed
7178145: Change constMethodOop::_exception_table to optionally inlined u2 table.
Summary: Change constMethodOop::_exception_table to optionally inlined u2 table.
Reviewed-by: bdelsart, coleenp, kamg
| author | jiangli |
|---|---|
| date | Tue, 26 Jun 2012 19:08:44 -0400 |
| parents | f7c4174b33ba |
| children | e74da3c2b827 |
| 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 { | |
| 349 char as_chars[256]; | |
| 350 jio_snprintf(as_chars, sizeof(as_chars), INTX_FORMAT, MaxDirectMemorySize); | |
| 351 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); | |
| 352 } | |
| 353 | |
| 354 // JVM monitoring and management support | |
| 355 // Add the sun.management.compiler property for the compiler's name | |
| 356 { | |
| 357 #undef CSIZE | |
| 358 #if defined(_LP64) || defined(_WIN64) | |
| 359 #define CSIZE "64-Bit " | |
| 360 #else | |
| 361 #define CSIZE | |
| 362 #endif // 64bit | |
| 363 | |
| 364 #ifdef TIERED | |
| 365 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; | |
| 366 #else | |
| 367 #if defined(COMPILER1) | |
| 368 const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; | |
| 369 #elif defined(COMPILER2) | |
| 370 const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; | |
| 371 #else | |
| 372 const char* compiler_name = ""; | |
| 373 #endif // compilers | |
| 374 #endif // TIERED | |
| 375 | |
| 376 if (*compiler_name != '\0' && | |
| 377 (Arguments::mode() != Arguments::_int)) { | |
| 378 PUTPROP(props, "sun.management.compiler", compiler_name); | |
| 379 } | |
| 380 } | |
| 381 | |
| 382 return properties; | |
| 383 JVM_END | |
| 384 | |
| 385 | |
| 386 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// | |
| 387 | |
| 388 extern volatile jint vm_created; | |
| 389 | |
| 390 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
| 391 if (vm_created != 0 && (code == 0)) { | |
| 392 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
| 393 Universe::run_finalizers_on_exit(); | |
| 394 } | |
| 395 before_exit(thread); | |
| 396 vm_exit(code); | |
| 397 JVM_END | |
| 398 | |
| 399 | |
| 400 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
| 401 before_exit(thread); | |
| 402 vm_exit(code); | |
| 403 JVM_END | |
| 404 | |
| 405 | |
| 406 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
| 407 register_on_exit_function(func); | |
| 408 JVM_END | |
| 409 | |
| 410 | |
| 411 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
| 412 JVMWrapper("JVM_GC"); | |
| 413 if (!DisableExplicitGC) { | |
| 414 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
| 415 } | |
| 416 JVM_END | |
| 417 | |
| 418 | |
| 419 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
| 420 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
| 421 return Universe::heap()->millis_since_last_gc(); | |
| 422 JVM_END | |
| 423 | |
| 424 | |
| 425 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
| 426 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
| 427 JVM_END | |
| 428 | |
| 429 | |
| 430 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
| 431 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
| 432 JVM_END | |
| 433 | |
| 434 static inline jlong convert_size_t_to_jlong(size_t val) { | |
| 435 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
| 436 NOT_LP64 (return (jlong)val;) | |
| 437 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
| 438 } | |
| 439 | |
| 440 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
| 441 JVMWrapper("JVM_TotalMemory"); | |
| 442 size_t n = Universe::heap()->capacity(); | |
| 443 return convert_size_t_to_jlong(n); | |
| 444 JVM_END | |
| 445 | |
| 446 | |
| 447 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
| 448 JVMWrapper("JVM_FreeMemory"); | |
| 449 CollectedHeap* ch = Universe::heap(); | |
|
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450 size_t n; |
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451 { |
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452 MutexLocker x(Heap_lock); |
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453 n = ch->capacity() - ch->used(); |
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454 } |
| 0 | 455 return convert_size_t_to_jlong(n); |
| 456 JVM_END | |
| 457 | |
| 458 | |
| 459 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
| 460 JVMWrapper("JVM_MaxMemory"); | |
| 461 size_t n = Universe::heap()->max_capacity(); | |
| 462 return convert_size_t_to_jlong(n); | |
| 463 JVM_END | |
| 464 | |
| 465 | |
| 466 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
| 467 JVMWrapper("JVM_ActiveProcessorCount"); | |
| 468 return os::active_processor_count(); | |
| 469 JVM_END | |
| 470 | |
| 471 | |
| 472 | |
| 473 // java.lang.Throwable ////////////////////////////////////////////////////// | |
| 474 | |
| 475 | |
| 476 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
| 477 JVMWrapper("JVM_FillInStackTrace"); | |
| 478 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
| 479 java_lang_Throwable::fill_in_stack_trace(exception); | |
| 480 JVM_END | |
| 481 | |
| 482 | |
| 483 JVM_ENTRY(void, JVM_PrintStackTrace(JNIEnv *env, jobject receiver, jobject printable)) | |
| 484 JVMWrapper("JVM_PrintStackTrace"); | |
| 485 // Note: This is no longer used in Merlin, but we still support it for compatibility. | |
| 486 oop exception = JNIHandles::resolve_non_null(receiver); | |
| 487 oop stream = JNIHandles::resolve_non_null(printable); | |
| 488 java_lang_Throwable::print_stack_trace(exception, stream); | |
| 489 JVM_END | |
| 490 | |
| 491 | |
| 492 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
| 493 JVMWrapper("JVM_GetStackTraceDepth"); | |
| 494 oop exception = JNIHandles::resolve(throwable); | |
| 495 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
| 496 JVM_END | |
| 497 | |
| 498 | |
| 499 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
| 500 JVMWrapper("JVM_GetStackTraceElement"); | |
| 501 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
| 502 oop exception = JNIHandles::resolve(throwable); | |
| 503 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
| 504 return JNIHandles::make_local(env, element); | |
| 505 JVM_END | |
| 506 | |
| 507 | |
| 508 // java.lang.Object /////////////////////////////////////////////// | |
| 509 | |
| 510 | |
| 511 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
| 512 JVMWrapper("JVM_IHashCode"); | |
| 513 // as implemented in the classic virtual machine; return 0 if object is NULL | |
| 514 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
| 515 JVM_END | |
| 516 | |
| 517 | |
| 518 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
| 519 JVMWrapper("JVM_MonitorWait"); | |
| 520 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 521 assert(obj->is_instance() || obj->is_array(), "JVM_MonitorWait must apply to an object"); | |
| 522 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
| 523 if (JvmtiExport::should_post_monitor_wait()) { | |
| 524 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
| 525 } | |
| 526 ObjectSynchronizer::wait(obj, ms, CHECK); | |
| 527 JVM_END | |
| 528 | |
| 529 | |
| 530 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
| 531 JVMWrapper("JVM_MonitorNotify"); | |
| 532 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 533 assert(obj->is_instance() || obj->is_array(), "JVM_MonitorNotify must apply to an object"); | |
| 534 ObjectSynchronizer::notify(obj, CHECK); | |
| 535 JVM_END | |
| 536 | |
| 537 | |
| 538 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
| 539 JVMWrapper("JVM_MonitorNotifyAll"); | |
| 540 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 541 assert(obj->is_instance() || obj->is_array(), "JVM_MonitorNotifyAll must apply to an object"); | |
| 542 ObjectSynchronizer::notifyall(obj, CHECK); | |
| 543 JVM_END | |
| 544 | |
| 545 | |
| 546 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
| 547 JVMWrapper("JVM_Clone"); | |
| 548 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 549 const KlassHandle klass (THREAD, obj->klass()); | |
| 550 JvmtiVMObjectAllocEventCollector oam; | |
| 551 | |
| 552 #ifdef ASSERT | |
| 553 // Just checking that the cloneable flag is set correct | |
| 554 if (obj->is_javaArray()) { | |
| 555 guarantee(klass->is_cloneable(), "all arrays are cloneable"); | |
| 556 } else { | |
| 557 guarantee(obj->is_instance(), "should be instanceOop"); | |
| 1142 | 558 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
| 0 | 559 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
| 560 } | |
| 561 #endif | |
| 562 | |
| 563 // Check if class of obj supports the Cloneable interface. | |
| 564 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
| 565 if (!klass->is_cloneable()) { | |
| 566 ResourceMark rm(THREAD); | |
| 567 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
| 568 } | |
| 569 | |
| 570 // Make shallow object copy | |
| 571 const int size = obj->size(); | |
| 572 oop new_obj = NULL; | |
| 573 if (obj->is_javaArray()) { | |
| 574 const int length = ((arrayOop)obj())->length(); | |
| 575 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
| 576 } else { | |
| 577 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
| 578 } | |
| 579 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
| 580 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
| 581 // be suspended in the middle of copying the pointer and end up with parts | |
| 582 // of two different pointers in the field. Subsequent dereferences will crash. | |
| 583 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
| 584 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
| 585 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
| 586 // The same is true of StubRoutines::object_copy and the various oop_copy | |
| 587 // variants, and of the code generated by the inline_native_clone intrinsic. | |
| 588 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
| 589 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
| 590 (size_t)align_object_size(size) / HeapWordsPerLong); | |
| 591 // Clear the header | |
| 592 new_obj->init_mark(); | |
| 593 | |
| 594 // Store check (mark entire object and let gc sort it out) | |
| 595 BarrierSet* bs = Universe::heap()->barrier_set(); | |
| 596 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
| 597 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
| 598 | |
| 599 // Caution: this involves a java upcall, so the clone should be | |
| 600 // "gc-robust" by this stage. | |
| 601 if (klass->has_finalizer()) { | |
| 602 assert(obj->is_instance(), "should be instanceOop"); | |
| 603 new_obj = instanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); | |
| 604 } | |
| 605 | |
| 606 return JNIHandles::make_local(env, oop(new_obj)); | |
| 607 JVM_END | |
| 608 | |
| 609 // java.lang.Compiler //////////////////////////////////////////////////// | |
| 610 | |
| 611 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
| 612 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
| 613 // functions are all silently ignored unless JVM warnings are printed. | |
| 614 | |
| 615 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
| 616 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
| 617 JVM_END | |
| 618 | |
| 619 | |
| 620 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
| 621 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
| 622 return JNI_FALSE; | |
| 623 JVM_END | |
| 624 | |
| 625 | |
| 626 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
| 627 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
| 628 return JNI_FALSE; | |
| 629 JVM_END | |
| 630 | |
| 631 | |
| 632 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
| 633 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
| 634 return JNI_FALSE; | |
| 635 JVM_END | |
| 636 | |
| 637 | |
| 638 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
| 639 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
| 640 return NULL; | |
| 641 JVM_END | |
| 642 | |
| 643 | |
| 644 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
| 645 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
| 646 JVM_END | |
| 647 | |
| 648 | |
| 649 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
| 650 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
| 651 JVM_END | |
| 652 | |
| 653 | |
| 654 | |
| 655 // Error message support ////////////////////////////////////////////////////// | |
| 656 | |
| 657 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
| 658 JVMWrapper("JVM_GetLastErrorString"); | |
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659 return (jint)os::lasterror(buf, len); |
| 0 | 660 JVM_END |
| 661 | |
| 662 | |
| 663 // java.io.File /////////////////////////////////////////////////////////////// | |
| 664 | |
| 665 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
| 666 JVMWrapper2("JVM_NativePath (%s)", path); | |
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667 return os::native_path(path); |
| 0 | 668 JVM_END |
| 669 | |
| 670 | |
| 671 // Misc. class handling /////////////////////////////////////////////////////////// | |
| 672 | |
| 673 | |
| 674 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
| 675 JVMWrapper("JVM_GetCallerClass"); | |
| 676 klassOop k = thread->security_get_caller_class(depth); | |
| 677 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); | |
| 678 JVM_END | |
| 679 | |
| 680 | |
| 681 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
| 682 JVMWrapper("JVM_FindPrimitiveClass"); | |
| 683 oop mirror = NULL; | |
| 684 BasicType t = name2type(utf); | |
| 685 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
| 686 mirror = Universe::java_mirror(t); | |
| 687 } | |
| 688 if (mirror == NULL) { | |
| 689 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
| 690 } else { | |
| 691 return (jclass) JNIHandles::make_local(env, mirror); | |
| 692 } | |
| 693 JVM_END | |
| 694 | |
| 695 | |
| 696 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
| 697 JVMWrapper("JVM_ResolveClass"); | |
| 698 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
| 699 JVM_END | |
| 700 | |
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701 |
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702 // Returns a class loaded by the bootstrap class loader; or null |
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703 // if not found. ClassNotFoundException is not thrown. |
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704 // |
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705 // Rationale behind JVM_FindClassFromBootLoader |
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706 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
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707 // b> because of (a) java.dll has a direct dependecy on the unexported |
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708 // private symbol "_JVM_FindClassFromClassLoader@20". |
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709 // c> the launcher cannot use the private symbol as it dynamically opens |
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710 // the entry point, so if something changes, the launcher will fail |
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711 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
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712 // stable exported interface. |
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713 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
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714 // signature to change from _JVM_FindClassFromClassLoader@20 to |
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715 // JVM_FindClassFromClassLoader and will not be backward compatible |
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716 // with older JDKs. |
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717 // Thus a public/stable exported entry point is the right solution, |
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718 // public here means public in linker semantics, and is exported only |
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719 // to the JDK, and is not intended to be a public API. |
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720 |
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721 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
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722 const char* name)) |
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723 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
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724 |
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725 // Java libraries should ensure that name is never null... |
|
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726 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
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727 // It's impossible to create this class; the name cannot fit |
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728 // into the constant pool. |
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729 return NULL; |
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730 } |
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731 |
|
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732 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
|
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733 klassOop k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
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734 if (k == NULL) { |
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735 return NULL; |
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736 } |
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|
737 |
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738 if (TraceClassResolution) { |
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739 trace_class_resolution(k); |
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740 } |
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741 return (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); |
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742 JVM_END |
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743 |
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744 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
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745 jboolean init, jobject loader, |
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746 jboolean throwError)) |
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747 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
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748 throwError ? "error" : "exception"); |
| 388 | 749 // Java libraries should ensure that name is never null... |
|
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750 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
| 388 | 751 // It's impossible to create this class; the name cannot fit |
| 752 // into the constant pool. | |
| 753 if (throwError) { | |
| 754 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 755 } else { | |
| 756 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
| 757 } | |
| 758 } | |
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759 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
| 388 | 760 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
| 761 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 762 Handle(), throwError, THREAD); | |
| 763 | |
| 764 if (TraceClassResolution && result != NULL) { | |
| 765 trace_class_resolution(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(result))); | |
| 766 } | |
| 767 return result; | |
| 0 | 768 JVM_END |
| 769 | |
| 770 | |
| 771 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
| 772 jboolean init, jclass from)) | |
| 773 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
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774 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
| 0 | 775 // It's impossible to create this class; the name cannot fit |
| 776 // into the constant pool. | |
| 777 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 778 } | |
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779 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
| 0 | 780 oop from_class_oop = JNIHandles::resolve(from); |
| 781 klassOop from_class = (from_class_oop == NULL) | |
| 782 ? (klassOop)NULL | |
| 783 : java_lang_Class::as_klassOop(from_class_oop); | |
| 784 oop class_loader = NULL; | |
| 785 oop protection_domain = NULL; | |
| 786 if (from_class != NULL) { | |
| 787 class_loader = Klass::cast(from_class)->class_loader(); | |
| 788 protection_domain = Klass::cast(from_class)->protection_domain(); | |
| 789 } | |
| 790 Handle h_loader(THREAD, class_loader); | |
| 791 Handle h_prot (THREAD, protection_domain); | |
| 792 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 793 h_prot, true, thread); | |
| 794 | |
| 795 if (TraceClassResolution && result != NULL) { | |
| 796 // this function is generally only used for class loading during verification. | |
| 797 ResourceMark rm; | |
| 798 oop from_mirror = JNIHandles::resolve_non_null(from); | |
| 799 klassOop from_class = java_lang_Class::as_klassOop(from_mirror); | |
| 800 const char * from_name = Klass::cast(from_class)->external_name(); | |
| 801 | |
| 802 oop mirror = JNIHandles::resolve_non_null(result); | |
| 803 klassOop to_class = java_lang_Class::as_klassOop(mirror); | |
| 804 const char * to = Klass::cast(to_class)->external_name(); | |
| 805 tty->print("RESOLVE %s %s (verification)\n", from_name, to); | |
| 806 } | |
| 807 | |
| 808 return result; | |
| 809 JVM_END | |
| 810 | |
| 811 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
| 812 if (loader.is_null()) { | |
| 813 return; | |
| 814 } | |
| 815 | |
| 816 // check whether the current caller thread holds the lock or not. | |
| 817 // If not, increment the corresponding counter | |
| 818 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
| 819 ObjectSynchronizer::owner_self) { | |
| 820 counter->inc(); | |
| 821 } | |
| 822 } | |
| 823 | |
| 824 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
|
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825 // and JVM_DefineClassWithSourceCond() |
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826 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
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827 jobject loader, const jbyte *buf, |
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828 jsize len, jobject pd, const char *source, |
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829 jboolean verify, TRAPS) { |
|
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830 if (source == NULL) source = "__JVM_DefineClass__"; |
| 0 | 831 |
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832 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
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833 JavaThread* jt = (JavaThread*) THREAD; |
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834 |
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835 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
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836 ClassLoader::perf_define_appclass_selftime(), |
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837 ClassLoader::perf_define_appclasses(), |
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838 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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839 jt->get_thread_stat()->perf_timers_addr(), |
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840 PerfClassTraceTime::DEFINE_CLASS); |
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841 |
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842 if (UsePerfData) { |
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843 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
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844 } |
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845 |
| 0 | 846 // Since exceptions can be thrown, class initialization can take place |
| 847 // if name is NULL no check for class name in .class stream has to be made. | |
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848 TempNewSymbol class_name = NULL; |
| 0 | 849 if (name != NULL) { |
| 850 const int str_len = (int)strlen(name); | |
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851 if (str_len > Symbol::max_length()) { |
| 0 | 852 // It's impossible to create this class; the name cannot fit |
| 853 // into the constant pool. | |
| 854 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 855 } | |
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856 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
| 0 | 857 } |
| 858 | |
| 859 ResourceMark rm(THREAD); | |
| 860 ClassFileStream st((u1*) buf, len, (char *)source); | |
| 861 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
| 862 if (UsePerfData) { | |
| 863 is_lock_held_by_thread(class_loader, | |
| 864 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
| 865 THREAD); | |
| 866 } | |
| 867 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
| 868 klassOop k = SystemDictionary::resolve_from_stream(class_name, class_loader, | |
| 869 protection_domain, &st, | |
|
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870 verify != 0, |
| 0 | 871 CHECK_NULL); |
| 872 | |
| 873 if (TraceClassResolution && k != NULL) { | |
| 874 trace_class_resolution(k); | |
| 875 } | |
| 876 | |
| 877 return (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); | |
| 878 } | |
| 879 | |
| 880 | |
| 881 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
| 882 JVMWrapper2("JVM_DefineClass %s", name); | |
| 883 | |
|
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884 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
| 0 | 885 JVM_END |
| 886 | |
| 887 | |
| 888 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
| 889 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
| 890 | |
|
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891 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
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892 JVM_END |
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893 |
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894 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
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895 jobject loader, const jbyte *buf, |
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896 jsize len, jobject pd, |
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897 const char *source, jboolean verify)) |
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898 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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899 |
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900 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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901 JVM_END |
| 0 | 902 |
| 903 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
| 904 JVMWrapper("JVM_FindLoadedClass"); | |
| 905 ResourceMark rm(THREAD); | |
| 906 | |
| 907 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 908 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
| 909 | |
| 910 const char* str = java_lang_String::as_utf8_string(string()); | |
| 911 // Sanity check, don't expect null | |
| 912 if (str == NULL) return NULL; | |
| 913 | |
| 914 const int str_len = (int)strlen(str); | |
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915 if (str_len > Symbol::max_length()) { |
| 0 | 916 // It's impossible to create this class; the name cannot fit |
| 917 // into the constant pool. | |
| 918 return NULL; | |
| 919 } | |
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920 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
| 0 | 921 |
| 922 // Security Note: | |
| 923 // The Java level wrapper will perform the necessary security check allowing | |
| 924 // us to pass the NULL as the initiating class loader. | |
| 925 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
| 926 if (UsePerfData) { | |
| 927 is_lock_held_by_thread(h_loader, | |
| 928 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
| 929 THREAD); | |
| 930 } | |
| 931 | |
| 932 klassOop k = SystemDictionary::find_instance_or_array_klass(klass_name, | |
| 933 h_loader, | |
| 934 Handle(), | |
| 935 CHECK_NULL); | |
| 936 | |
| 937 return (k == NULL) ? NULL : | |
| 938 (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); | |
| 939 JVM_END | |
| 940 | |
| 941 | |
| 942 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
| 943 | |
| 944 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
| 945 assert (cls != NULL, "illegal class"); | |
| 946 JVMWrapper("JVM_GetClassName"); | |
| 947 JvmtiVMObjectAllocEventCollector oam; | |
| 948 ResourceMark rm(THREAD); | |
| 949 const char* name; | |
| 950 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 951 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
| 952 } else { | |
| 953 // Consider caching interned string in Klass | |
| 954 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
| 955 assert(k->is_klass(), "just checking"); | |
| 956 name = Klass::cast(k)->external_name(); | |
| 957 } | |
| 958 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
| 959 return (jstring) JNIHandles::make_local(env, result); | |
| 960 JVM_END | |
| 961 | |
| 962 | |
| 963 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
| 964 JVMWrapper("JVM_GetClassInterfaces"); | |
| 965 JvmtiVMObjectAllocEventCollector oam; | |
| 966 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 967 | |
| 968 // Special handling for primitive objects | |
| 969 if (java_lang_Class::is_primitive(mirror)) { | |
| 970 // Primitive objects does not have any interfaces | |
| 1142 | 971 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 972 return (jobjectArray) JNIHandles::make_local(env, r); |
| 973 } | |
| 974 | |
| 975 KlassHandle klass(thread, java_lang_Class::as_klassOop(mirror)); | |
| 976 // Figure size of result array | |
| 977 int size; | |
| 978 if (klass->oop_is_instance()) { | |
| 979 size = instanceKlass::cast(klass())->local_interfaces()->length(); | |
| 980 } else { | |
| 981 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
| 982 size = 2; | |
| 983 } | |
| 984 | |
| 985 // Allocate result array | |
| 1142 | 986 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
| 0 | 987 objArrayHandle result (THREAD, r); |
| 988 // Fill in result | |
| 989 if (klass->oop_is_instance()) { | |
| 990 // Regular instance klass, fill in all local interfaces | |
| 991 for (int index = 0; index < size; index++) { | |
| 992 klassOop k = klassOop(instanceKlass::cast(klass())->local_interfaces()->obj_at(index)); | |
| 993 result->obj_at_put(index, Klass::cast(k)->java_mirror()); | |
| 994 } | |
| 995 } else { | |
| 996 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
| 1142 | 997 result->obj_at_put(0, Klass::cast(SystemDictionary::Cloneable_klass())->java_mirror()); |
| 998 result->obj_at_put(1, Klass::cast(SystemDictionary::Serializable_klass())->java_mirror()); | |
| 0 | 999 } |
| 1000 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1001 JVM_END | |
| 1002 | |
| 1003 | |
| 1004 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
| 1005 JVMWrapper("JVM_GetClassLoader"); | |
| 1006 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1007 return NULL; | |
| 1008 } | |
| 1009 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 1010 oop loader = Klass::cast(k)->class_loader(); | |
| 1011 return JNIHandles::make_local(env, loader); | |
| 1012 JVM_END | |
| 1013 | |
| 1014 | |
| 1015 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
| 1016 JVMWrapper("JVM_IsInterface"); | |
| 1017 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1018 if (java_lang_Class::is_primitive(mirror)) { | |
| 1019 return JNI_FALSE; | |
| 1020 } | |
| 1021 klassOop k = java_lang_Class::as_klassOop(mirror); | |
| 1022 jboolean result = Klass::cast(k)->is_interface(); | |
| 1023 assert(!result || Klass::cast(k)->oop_is_instance(), | |
| 1024 "all interfaces are instance types"); | |
| 1025 // The compiler intrinsic for isInterface tests the | |
| 1026 // Klass::_access_flags bits in the same way. | |
| 1027 return result; | |
| 1028 JVM_END | |
| 1029 | |
| 1030 | |
| 1031 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
| 1032 JVMWrapper("JVM_GetClassSigners"); | |
| 1033 JvmtiVMObjectAllocEventCollector oam; | |
| 1034 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1035 // There are no signers for primitive types | |
| 1036 return NULL; | |
| 1037 } | |
| 1038 | |
| 1039 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 1040 objArrayOop signers = NULL; | |
| 1041 if (Klass::cast(k)->oop_is_instance()) { | |
| 1042 signers = instanceKlass::cast(k)->signers(); | |
| 1043 } | |
| 1044 | |
| 1045 // If there are no signers set in the class, or if the class | |
| 1046 // is an array, return NULL. | |
| 1047 if (signers == NULL) return NULL; | |
| 1048 | |
| 1049 // copy of the signers array | |
| 1050 klassOop element = objArrayKlass::cast(signers->klass())->element_klass(); | |
| 1051 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); | |
| 1052 for (int index = 0; index < signers->length(); index++) { | |
| 1053 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
| 1054 } | |
| 1055 | |
| 1056 // return the copy | |
| 1057 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
| 1058 JVM_END | |
| 1059 | |
| 1060 | |
| 1061 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
| 1062 JVMWrapper("JVM_SetClassSigners"); | |
| 1063 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1064 // This call is ignored for primitive types and arrays. | |
| 1065 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
| 1066 // be called with an array. Only the bootstrap loader creates arrays. | |
| 1067 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 1068 if (Klass::cast(k)->oop_is_instance()) { | |
| 1069 instanceKlass::cast(k)->set_signers(objArrayOop(JNIHandles::resolve(signers))); | |
| 1070 } | |
| 1071 } | |
| 1072 JVM_END | |
| 1073 | |
| 1074 | |
| 1075 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
| 1076 JVMWrapper("JVM_GetProtectionDomain"); | |
| 1077 if (JNIHandles::resolve(cls) == NULL) { | |
| 1078 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
| 1079 } | |
| 1080 | |
| 1081 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1082 // Primitive types does not have a protection domain. | |
| 1083 return NULL; | |
| 1084 } | |
| 1085 | |
| 1086 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
| 1087 return (jobject) JNIHandles::make_local(env, Klass::cast(k)->protection_domain()); | |
| 1088 JVM_END | |
| 1089 | |
| 1090 | |
| 1091 // Obsolete since 1.2 (Class.setProtectionDomain removed), although | |
| 1092 // still defined in core libraries as of 1.5. | |
| 1093 JVM_ENTRY(void, JVM_SetProtectionDomain(JNIEnv *env, jclass cls, jobject protection_domain)) | |
| 1094 JVMWrapper("JVM_SetProtectionDomain"); | |
| 1095 if (JNIHandles::resolve(cls) == NULL) { | |
| 1096 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 1097 } | |
| 1098 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1099 // Call is ignored for primitive types | |
| 1100 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
| 1101 | |
| 1102 // cls won't be an array, as this called only from ClassLoader.defineClass | |
| 1103 if (Klass::cast(k)->oop_is_instance()) { | |
| 1104 oop pd = JNIHandles::resolve(protection_domain); | |
| 1105 assert(pd == NULL || pd->is_oop(), "just checking"); | |
| 1106 instanceKlass::cast(k)->set_protection_domain(pd); | |
| 1107 } | |
| 1108 } | |
| 1109 JVM_END | |
| 1110 | |
| 1111 | |
| 1112 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
| 1113 JVMWrapper("JVM_DoPrivileged"); | |
| 1114 | |
| 1115 if (action == NULL) { | |
| 1116 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
| 1117 } | |
| 1118 | |
| 1119 // Stack allocated list of privileged stack elements | |
| 1120 PrivilegedElement pi; | |
| 1121 | |
| 1122 // Check that action object understands "Object run()" | |
| 1123 Handle object (THREAD, JNIHandles::resolve(action)); | |
| 1124 | |
| 1125 // get run() method | |
| 1126 methodOop m_oop = Klass::cast(object->klass())->uncached_lookup_method( | |
| 1127 vmSymbols::run_method_name(), | |
| 1128 vmSymbols::void_object_signature()); | |
| 1129 methodHandle m (THREAD, m_oop); | |
| 1130 if (m.is_null() || !m->is_method() || !methodOop(m())->is_public() || methodOop(m())->is_static()) { | |
| 1131 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); | |
| 1132 } | |
| 1133 | |
| 1134 // Compute the frame initiating the do privileged operation and setup the privileged stack | |
| 1135 vframeStream vfst(thread); | |
| 1136 vfst.security_get_caller_frame(1); | |
| 1137 | |
| 1138 if (!vfst.at_end()) { | |
| 1139 pi.initialize(&vfst, JNIHandles::resolve(context), thread->privileged_stack_top(), CHECK_NULL); | |
| 1140 thread->set_privileged_stack_top(&pi); | |
| 1141 } | |
| 1142 | |
| 1143 | |
| 1144 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
| 1145 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
| 1146 Handle pending_exception; | |
| 1147 JavaValue result(T_OBJECT); | |
| 1148 JavaCallArguments args(object); | |
| 1149 JavaCalls::call(&result, m, &args, THREAD); | |
| 1150 | |
| 1151 // done with action, remove ourselves from the list | |
| 1152 if (!vfst.at_end()) { | |
| 1153 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
| 1154 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
| 1155 } | |
| 1156 | |
| 1157 if (HAS_PENDING_EXCEPTION) { | |
| 1158 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
| 1159 CLEAR_PENDING_EXCEPTION; | |
| 1160 | |
| 1142 | 1161 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
| 1162 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
| 0 | 1163 // Throw a java.security.PrivilegedActionException(Exception e) exception |
| 1164 JavaCallArguments args(pending_exception); | |
|
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1165 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1166 vmSymbols::exception_void_signature(), |
| 0 | 1167 &args); |
| 1168 } | |
| 1169 } | |
| 1170 | |
| 1171 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
| 1172 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
| 1173 JVM_END | |
| 1174 | |
| 1175 | |
| 1176 // Returns the inherited_access_control_context field of the running thread. | |
| 1177 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1178 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
| 1179 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
| 1180 return JNIHandles::make_local(env, result); | |
| 1181 JVM_END | |
| 1182 | |
| 1183 class RegisterArrayForGC { | |
| 1184 private: | |
| 1185 JavaThread *_thread; | |
| 1186 public: | |
| 1187 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
| 1188 _thread = thread; | |
| 1189 _thread->register_array_for_gc(array); | |
| 1190 } | |
| 1191 | |
| 1192 ~RegisterArrayForGC() { | |
| 1193 _thread->register_array_for_gc(NULL); | |
| 1194 } | |
| 1195 }; | |
| 1196 | |
| 1197 | |
| 1198 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1199 JVMWrapper("JVM_GetStackAccessControlContext"); | |
| 1200 if (!UsePrivilegedStack) return NULL; | |
| 1201 | |
| 1202 ResourceMark rm(THREAD); | |
| 1203 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
| 1204 JvmtiVMObjectAllocEventCollector oam; | |
| 1205 | |
| 1206 // count the protection domains on the execution stack. We collapse | |
| 1207 // duplicate consecutive protection domains into a single one, as | |
| 1208 // well as stopping when we hit a privileged frame. | |
| 1209 | |
| 1210 // Use vframeStream to iterate through Java frames | |
| 1211 vframeStream vfst(thread); | |
| 1212 | |
| 1213 oop previous_protection_domain = NULL; | |
| 1214 Handle privileged_context(thread, NULL); | |
| 1215 bool is_privileged = false; | |
| 1216 oop protection_domain = NULL; | |
| 1217 | |
| 1218 for(; !vfst.at_end(); vfst.next()) { | |
| 1219 // get method of frame | |
| 1220 methodOop method = vfst.method(); | |
| 1221 intptr_t* frame_id = vfst.frame_id(); | |
| 1222 | |
| 1223 // check the privileged frames to see if we have a match | |
| 1224 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
| 1225 // this frame is privileged | |
| 1226 is_privileged = true; | |
| 1227 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
| 1228 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
| 1229 } else { | |
| 1230 protection_domain = instanceKlass::cast(method->method_holder())->protection_domain(); | |
| 1231 } | |
| 1232 | |
| 1233 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
| 1234 local_array->push(protection_domain); | |
| 1235 previous_protection_domain = protection_domain; | |
| 1236 } | |
| 1237 | |
| 1238 if (is_privileged) break; | |
| 1239 } | |
| 1240 | |
| 1241 | |
| 1242 // either all the domains on the stack were system domains, or | |
| 1243 // we had a privileged system domain | |
| 1244 if (local_array->is_empty()) { | |
| 1245 if (is_privileged && privileged_context.is_null()) return NULL; | |
| 1246 | |
| 1247 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
| 1248 return JNIHandles::make_local(env, result); | |
| 1249 } | |
| 1250 | |
| 1251 // the resource area must be registered in case of a gc | |
| 1252 RegisterArrayForGC ragc(thread, local_array); | |
| 1142 | 1253 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
| 0 | 1254 local_array->length(), CHECK_NULL); |
| 1255 objArrayHandle h_context(thread, context); | |
| 1256 for (int index = 0; index < local_array->length(); index++) { | |
| 1257 h_context->obj_at_put(index, local_array->at(index)); | |
| 1258 } | |
| 1259 | |
| 1260 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
| 1261 | |
| 1262 return JNIHandles::make_local(env, result); | |
| 1263 JVM_END | |
| 1264 | |
| 1265 | |
| 1266 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
| 1267 JVMWrapper("JVM_IsArrayClass"); | |
| 1268 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 1269 return (k != NULL) && Klass::cast(k)->oop_is_javaArray() ? true : false; | |
| 1270 JVM_END | |
| 1271 | |
| 1272 | |
| 1273 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
| 1274 JVMWrapper("JVM_IsPrimitiveClass"); | |
| 1275 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1276 return (jboolean) java_lang_Class::is_primitive(mirror); | |
| 1277 JVM_END | |
| 1278 | |
| 1279 | |
| 1280 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
| 1281 JVMWrapper("JVM_GetComponentType"); | |
| 1282 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1283 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
| 1284 return (jclass) JNIHandles::make_local(env, result); | |
| 1285 JVM_END | |
| 1286 | |
| 1287 | |
| 1288 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
| 1289 JVMWrapper("JVM_GetClassModifiers"); | |
| 1290 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1291 // Primitive type | |
| 1292 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 1293 } | |
| 1294 | |
| 1295 Klass* k = Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls))); | |
| 1296 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); | |
| 1297 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
| 1298 return k->modifier_flags(); | |
| 1299 JVM_END | |
| 1300 | |
| 1301 | |
| 1302 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
| 1303 | |
| 1304 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
| 1305 JvmtiVMObjectAllocEventCollector oam; | |
| 1306 // ofClass is a reference to a java_lang_Class object. The mirror object | |
| 1307 // of an instanceKlass | |
| 1308 | |
| 1309 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 1310 ! Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_instance()) { | |
| 1142 | 1311 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1312 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1313 } | |
| 1314 | |
| 1315 instanceKlassHandle k(thread, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
|
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1316 InnerClassesIterator iter(k); |
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1317 |
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1318 if (iter.length() == 0) { |
| 0 | 1319 // Neither an inner nor outer class |
| 1142 | 1320 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1321 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1322 } | |
| 1323 | |
| 1324 // find inner class info | |
| 1325 constantPoolHandle cp(thread, k->constants()); | |
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1326 int length = iter.length(); |
| 0 | 1327 |
| 1328 // Allocate temp. result array | |
| 1142 | 1329 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
| 0 | 1330 objArrayHandle result (THREAD, r); |
| 1331 int members = 0; | |
| 1332 | |
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1333 for (; !iter.done(); iter.next()) { |
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1334 int ioff = iter.inner_class_info_index(); |
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1335 int ooff = iter.outer_class_info_index(); |
| 0 | 1336 |
| 1337 if (ioff != 0 && ooff != 0) { | |
| 1338 // Check to see if the name matches the class we're looking for | |
| 1339 // before attempting to find the class. | |
| 1340 if (cp->klass_name_at_matches(k, ooff)) { | |
| 1341 klassOop outer_klass = cp->klass_at(ooff, CHECK_NULL); | |
| 1342 if (outer_klass == k()) { | |
| 1343 klassOop ik = cp->klass_at(ioff, CHECK_NULL); | |
| 1344 instanceKlassHandle inner_klass (THREAD, ik); | |
| 1345 | |
| 1346 // Throws an exception if outer klass has not declared k as | |
| 1347 // an inner klass | |
|
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1348 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
| 0 | 1349 |
| 1350 result->obj_at_put(members, inner_klass->java_mirror()); | |
| 1351 members++; | |
| 1352 } | |
| 1353 } | |
| 1354 } | |
| 1355 } | |
| 1356 | |
| 1357 if (members != length) { | |
| 1358 // Return array of right length | |
| 1142 | 1359 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
| 0 | 1360 for(int i = 0; i < members; i++) { |
| 1361 res->obj_at_put(i, result->obj_at(i)); | |
| 1362 } | |
| 1363 return (jobjectArray)JNIHandles::make_local(env, res); | |
| 1364 } | |
| 1365 | |
| 1366 return (jobjectArray)JNIHandles::make_local(env, result()); | |
| 1367 JVM_END | |
| 1368 | |
| 1369 | |
| 1370 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
|
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1371 { |
| 0 | 1372 // ofClass is a reference to a java_lang_Class object. |
| 1373 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 1374 ! Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_instance()) { | |
| 1375 return NULL; | |
| 1376 } | |
| 1377 | |
|
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1378 bool inner_is_member = false; |
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1379 klassOop outer_klass |
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1380 = instanceKlass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)) |
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1381 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
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1382 if (outer_klass == NULL) return NULL; // already a top-level class |
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1383 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
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1384 return (jclass) JNIHandles::make_local(env, Klass::cast(outer_klass)->java_mirror()); |
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1385 } |
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1386 JVM_END |
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1387 |
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1388 // should be in instanceKlass.cpp, but is here for historical reasons |
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1389 klassOop instanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
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1390 bool* inner_is_member, |
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1391 TRAPS) { |
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1392 Thread* thread = THREAD; |
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1393 InnerClassesIterator iter(k); |
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1394 if (iter.length() == 0) { |
| 0 | 1395 // No inner class info => no declaring class |
| 1396 return NULL; | |
| 1397 } | |
| 1398 | |
| 1399 constantPoolHandle i_cp(thread, k->constants()); | |
| 1400 | |
| 1401 bool found = false; | |
| 1402 klassOop ok; | |
| 1403 instanceKlassHandle outer_klass; | |
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1404 *inner_is_member = false; |
| 0 | 1405 |
| 1406 // Find inner_klass attribute | |
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1407 for (; !iter.done() && !found; iter.next()) { |
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1408 int ioff = iter.inner_class_info_index(); |
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1409 int ooff = iter.outer_class_info_index(); |
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1410 int noff = iter.inner_name_index(); |
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1411 if (ioff != 0) { |
| 0 | 1412 // Check to see if the name matches the class we're looking for |
| 1413 // before attempting to find the class. | |
| 1414 if (i_cp->klass_name_at_matches(k, ioff)) { | |
| 1415 klassOop inner_klass = i_cp->klass_at(ioff, CHECK_NULL); | |
|
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1416 found = (k() == inner_klass); |
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1417 if (found && ooff != 0) { |
| 0 | 1418 ok = i_cp->klass_at(ooff, CHECK_NULL); |
| 1419 outer_klass = instanceKlassHandle(thread, ok); | |
|
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1420 *inner_is_member = true; |
| 0 | 1421 } |
| 1422 } | |
| 1423 } | |
| 1424 } | |
| 1425 | |
|
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1426 if (found && outer_klass.is_null()) { |
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1427 // It may be anonymous; try for that. |
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1428 int encl_method_class_idx = k->enclosing_method_class_index(); |
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1429 if (encl_method_class_idx != 0) { |
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1430 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
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1431 outer_klass = instanceKlassHandle(thread, ok); |
|
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1432 *inner_is_member = false; |
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1433 } |
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1434 } |
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1435 |
| 0 | 1436 // If no inner class attribute found for this class. |
|
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1437 if (outer_klass.is_null()) return NULL; |
| 0 | 1438 |
| 1439 // Throws an exception if outer klass has not declared k as an inner klass | |
|
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1440 // We need evidence that each klass knows about the other, or else |
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1441 // the system could allow a spoof of an inner class to gain access rights. |
|
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1442 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
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1443 return outer_klass(); |
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1444 } |
| 0 | 1445 |
| 1446 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
| 1447 assert (cls != NULL, "illegal class"); | |
| 1448 JVMWrapper("JVM_GetClassSignature"); | |
| 1449 JvmtiVMObjectAllocEventCollector oam; | |
| 1450 ResourceMark rm(THREAD); | |
| 1451 // Return null for arrays and primatives | |
| 1452 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1453 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
| 1454 if (Klass::cast(k)->oop_is_instance()) { | |
|
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1455 Symbol* sym = instanceKlass::cast(k)->generic_signature(); |
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1456 if (sym == NULL) return NULL; |
| 0 | 1457 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 1458 return (jstring) JNIHandles::make_local(env, str()); | |
| 1459 } | |
| 1460 } | |
| 1461 return NULL; | |
| 1462 JVM_END | |
| 1463 | |
| 1464 | |
| 1465 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
| 1466 assert (cls != NULL, "illegal class"); | |
| 1467 JVMWrapper("JVM_GetClassAnnotations"); | |
| 1468 ResourceMark rm(THREAD); | |
| 1469 // Return null for arrays and primitives | |
| 1470 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1471 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
| 1472 if (Klass::cast(k)->oop_is_instance()) { | |
| 1473 return (jbyteArray) JNIHandles::make_local(env, | |
| 1474 instanceKlass::cast(k)->class_annotations()); | |
| 1475 } | |
| 1476 } | |
| 1477 return NULL; | |
| 1478 JVM_END | |
| 1479 | |
| 1480 | |
| 1481 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) | |
| 1482 assert(field != NULL, "illegal field"); | |
| 1483 JVMWrapper("JVM_GetFieldAnnotations"); | |
| 1484 | |
| 1485 // some of this code was adapted from from jni_FromReflectedField | |
| 1486 | |
| 1487 // field is a handle to a java.lang.reflect.Field object | |
| 1488 oop reflected = JNIHandles::resolve_non_null(field); | |
| 1489 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
| 1490 klassOop k = java_lang_Class::as_klassOop(mirror); | |
| 1491 int slot = java_lang_reflect_Field::slot(reflected); | |
| 1492 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
| 1493 | |
| 1494 fieldDescriptor fd; | |
| 1495 KlassHandle kh(THREAD, k); | |
| 3938 | 1496 intptr_t offset = instanceKlass::cast(kh())->field_offset(slot); |
| 0 | 1497 |
| 1498 if (modifiers & JVM_ACC_STATIC) { | |
| 1499 // for static fields we only look in the current class | |
| 1500 if (!instanceKlass::cast(kh())->find_local_field_from_offset(offset, | |
| 1501 true, &fd)) { | |
| 1502 assert(false, "cannot find static field"); | |
| 1503 return NULL; // robustness | |
| 1504 } | |
| 1505 } else { | |
| 1506 // for instance fields we start with the current class and work | |
| 1507 // our way up through the superclass chain | |
| 1508 if (!instanceKlass::cast(kh())->find_field_from_offset(offset, false, | |
| 1509 &fd)) { | |
| 1510 assert(false, "cannot find instance field"); | |
| 1511 return NULL; // robustness | |
| 1512 } | |
| 1513 } | |
| 1514 | |
| 1515 return (jbyteArray) JNIHandles::make_local(env, fd.annotations()); | |
| 1516 JVM_END | |
| 1517 | |
| 1518 | |
| 1519 static methodOop jvm_get_method_common(jobject method, TRAPS) { | |
| 1520 // some of this code was adapted from from jni_FromReflectedMethod | |
| 1521 | |
| 1522 oop reflected = JNIHandles::resolve_non_null(method); | |
| 1523 oop mirror = NULL; | |
| 1524 int slot = 0; | |
| 1525 | |
| 1142 | 1526 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
| 0 | 1527 mirror = java_lang_reflect_Constructor::clazz(reflected); |
| 1528 slot = java_lang_reflect_Constructor::slot(reflected); | |
| 1529 } else { | |
| 1142 | 1530 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
| 0 | 1531 "wrong type"); |
| 1532 mirror = java_lang_reflect_Method::clazz(reflected); | |
| 1533 slot = java_lang_reflect_Method::slot(reflected); | |
| 1534 } | |
| 1535 klassOop k = java_lang_Class::as_klassOop(mirror); | |
| 1536 | |
| 1537 KlassHandle kh(THREAD, k); | |
| 1538 methodOop m = instanceKlass::cast(kh())->method_with_idnum(slot); | |
| 1539 if (m == NULL) { | |
| 1540 assert(false, "cannot find method"); | |
| 1541 return NULL; // robustness | |
| 1542 } | |
| 1543 | |
| 1544 return m; | |
| 1545 } | |
| 1546 | |
| 1547 | |
| 1548 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
| 1549 JVMWrapper("JVM_GetMethodAnnotations"); | |
| 1550 | |
| 1551 // method is a handle to a java.lang.reflect.Method object | |
| 1552 methodOop m = jvm_get_method_common(method, CHECK_NULL); | |
| 1553 return (jbyteArray) JNIHandles::make_local(env, m->annotations()); | |
| 1554 JVM_END | |
| 1555 | |
| 1556 | |
| 1557 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
| 1558 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
| 1559 | |
| 1560 // method is a handle to a java.lang.reflect.Method object | |
| 1561 methodOop m = jvm_get_method_common(method, CHECK_NULL); | |
| 1562 return (jbyteArray) JNIHandles::make_local(env, m->annotation_default()); | |
| 1563 JVM_END | |
| 1564 | |
| 1565 | |
| 1566 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
| 1567 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
| 1568 | |
| 1569 // method is a handle to a java.lang.reflect.Method object | |
| 1570 methodOop m = jvm_get_method_common(method, CHECK_NULL); | |
| 1571 return (jbyteArray) JNIHandles::make_local(env, m->parameter_annotations()); | |
| 1572 JVM_END | |
| 1573 | |
| 1574 | |
| 1575 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
| 1576 | |
| 1577 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1578 { | |
| 1579 JVMWrapper("JVM_GetClassDeclaredFields"); | |
| 1580 JvmtiVMObjectAllocEventCollector oam; | |
| 1581 | |
| 1582 // Exclude primitive types and array types | |
| 1583 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 1584 Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { | |
| 1585 // Return empty array | |
| 1142 | 1586 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
| 0 | 1587 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1588 } | |
| 1589 | |
| 1590 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
| 1591 constantPoolHandle cp(THREAD, k->constants()); | |
| 1592 | |
| 1593 // Ensure class is linked | |
| 1594 k->link_class(CHECK_NULL); | |
| 1595 | |
| 1596 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
| 1597 bool skip_backtrace = false; | |
| 1598 | |
| 1599 // Allocate result | |
| 1600 int num_fields; | |
| 1601 | |
| 1602 if (publicOnly) { | |
| 1603 num_fields = 0; | |
| 3938 | 1604 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
| 1605 if (fs.access_flags().is_public()) ++num_fields; | |
| 0 | 1606 } |
| 1607 } else { | |
| 3938 | 1608 num_fields = k->java_fields_count(); |
| 0 | 1609 |
| 1142 | 1610 if (k() == SystemDictionary::Throwable_klass()) { |
| 0 | 1611 num_fields--; |
| 1612 skip_backtrace = true; | |
| 1613 } | |
| 1614 } | |
| 1615 | |
| 1142 | 1616 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
| 0 | 1617 objArrayHandle result (THREAD, r); |
| 1618 | |
| 1619 int out_idx = 0; | |
| 1620 fieldDescriptor fd; | |
| 3938 | 1621 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
| 0 | 1622 if (skip_backtrace) { |
| 1623 // 4496456 skip java.lang.Throwable.backtrace | |
| 3938 | 1624 int offset = fs.offset(); |
| 0 | 1625 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
| 1626 } | |
| 1627 | |
| 3938 | 1628 if (!publicOnly || fs.access_flags().is_public()) { |
| 1629 fd.initialize(k(), fs.index()); | |
| 0 | 1630 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
| 1631 result->obj_at_put(out_idx, field); | |
| 1632 ++out_idx; | |
| 1633 } | |
| 1634 } | |
| 1635 assert(out_idx == num_fields, "just checking"); | |
| 1636 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1637 } | |
| 1638 JVM_END | |
| 1639 | |
| 1640 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1641 { | |
| 1642 JVMWrapper("JVM_GetClassDeclaredMethods"); | |
| 1643 JvmtiVMObjectAllocEventCollector oam; | |
| 1644 | |
| 1645 // Exclude primitive types and array types | |
| 1646 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
| 1647 || Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { | |
| 1648 // Return empty array | |
| 1142 | 1649 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), 0, CHECK_NULL); |
| 0 | 1650 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1651 } | |
| 1652 | |
| 1653 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
| 1654 | |
| 1655 // Ensure class is linked | |
| 1656 k->link_class(CHECK_NULL); | |
| 1657 | |
| 1658 objArrayHandle methods (THREAD, k->methods()); | |
| 1659 int methods_length = methods->length(); | |
| 1660 int num_methods = 0; | |
| 1661 | |
| 1662 int i; | |
| 1663 for (i = 0; i < methods_length; i++) { | |
| 1664 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
| 1665 if (!method->is_initializer()) { | |
| 1666 if (!publicOnly || method->is_public()) { | |
| 1667 ++num_methods; | |
| 1668 } | |
| 1669 } | |
| 1670 } | |
| 1671 | |
| 1672 // Allocate result | |
| 1142 | 1673 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), num_methods, CHECK_NULL); |
| 0 | 1674 objArrayHandle result (THREAD, r); |
| 1675 | |
| 1676 int out_idx = 0; | |
| 1677 for (i = 0; i < methods_length; i++) { | |
| 1678 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
| 1679 if (!method->is_initializer()) { | |
| 1680 if (!publicOnly || method->is_public()) { | |
| 1681 oop m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); | |
| 1682 result->obj_at_put(out_idx, m); | |
| 1683 ++out_idx; | |
| 1684 } | |
| 1685 } | |
| 1686 } | |
| 1687 assert(out_idx == num_methods, "just checking"); | |
| 1688 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1689 } | |
| 1690 JVM_END | |
| 1691 | |
| 1692 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1693 { | |
| 1694 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
| 1695 JvmtiVMObjectAllocEventCollector oam; | |
| 1696 | |
| 1697 // Exclude primitive types and array types | |
| 1698 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
| 1699 || Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { | |
| 1700 // Return empty array | |
| 1142 | 1701 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), 0 , CHECK_NULL); |
| 0 | 1702 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1703 } | |
| 1704 | |
| 1705 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
| 1706 | |
| 1707 // Ensure class is linked | |
| 1708 k->link_class(CHECK_NULL); | |
| 1709 | |
| 1710 objArrayHandle methods (THREAD, k->methods()); | |
| 1711 int methods_length = methods->length(); | |
| 1712 int num_constructors = 0; | |
| 1713 | |
| 1714 int i; | |
| 1715 for (i = 0; i < methods_length; i++) { | |
| 1716 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
| 1717 if (method->is_initializer() && !method->is_static()) { | |
| 1718 if (!publicOnly || method->is_public()) { | |
| 1719 ++num_constructors; | |
| 1720 } | |
| 1721 } | |
| 1722 } | |
| 1723 | |
| 1724 // Allocate result | |
| 1142 | 1725 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), num_constructors, CHECK_NULL); |
| 0 | 1726 objArrayHandle result(THREAD, r); |
| 1727 | |
| 1728 int out_idx = 0; | |
| 1729 for (i = 0; i < methods_length; i++) { | |
| 1730 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
| 1731 if (method->is_initializer() && !method->is_static()) { | |
| 1732 if (!publicOnly || method->is_public()) { | |
| 1733 oop m = Reflection::new_constructor(method, CHECK_NULL); | |
| 1734 result->obj_at_put(out_idx, m); | |
| 1735 ++out_idx; | |
| 1736 } | |
| 1737 } | |
| 1738 } | |
| 1739 assert(out_idx == num_constructors, "just checking"); | |
| 1740 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1741 } | |
| 1742 JVM_END | |
| 1743 | |
| 1744 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
| 1745 { | |
| 1746 JVMWrapper("JVM_GetClassAccessFlags"); | |
| 1747 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1748 // Primitive type | |
| 1749 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 1750 } | |
| 1751 | |
| 1752 Klass* k = Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls))); | |
| 1753 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; | |
| 1754 } | |
| 1755 JVM_END | |
| 1756 | |
| 1757 | |
| 1758 // Constant pool access ////////////////////////////////////////////////////////// | |
| 1759 | |
| 1760 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
| 1761 { | |
| 1762 JVMWrapper("JVM_GetClassConstantPool"); | |
| 1763 JvmtiVMObjectAllocEventCollector oam; | |
| 1764 | |
| 1765 // Return null for primitives and arrays | |
| 1766 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1767 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 1768 if (Klass::cast(k)->oop_is_instance()) { | |
| 1769 instanceKlassHandle k_h(THREAD, k); | |
| 1770 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
| 1771 sun_reflect_ConstantPool::set_cp_oop(jcp(), k_h->constants()); | |
| 1772 return JNIHandles::make_local(jcp()); | |
| 1773 } | |
| 1774 } | |
| 1775 return NULL; | |
| 1776 } | |
| 1777 JVM_END | |
| 1778 | |
| 1779 | |
| 1780 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject unused, jobject jcpool)) | |
| 1781 { | |
| 1782 JVMWrapper("JVM_ConstantPoolGetSize"); | |
| 1783 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1784 return cp->length(); | |
| 1785 } | |
| 1786 JVM_END | |
| 1787 | |
| 1788 | |
| 1789 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { | |
| 1790 if (!cp->is_within_bounds(index)) { | |
| 1791 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); | |
| 1792 } | |
| 1793 } | |
| 1794 | |
| 1795 | |
| 1796 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1797 { | |
| 1798 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
| 1799 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1800 bounds_check(cp, index, CHECK_NULL); | |
| 1801 constantTag tag = cp->tag_at(index); | |
| 1802 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 1803 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1804 } | |
| 1805 klassOop k = cp->klass_at(index, CHECK_NULL); | |
|
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|
1806 return (jclass) JNIHandles::make_local(k->java_mirror()); |
| 0 | 1807 } |
| 1808 JVM_END | |
| 1809 | |
| 1810 | |
| 1811 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1812 { | |
| 1813 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
| 1814 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1815 bounds_check(cp, index, CHECK_NULL); | |
| 1816 constantTag tag = cp->tag_at(index); | |
| 1817 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 1818 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1819 } | |
| 1820 klassOop k = constantPoolOopDesc::klass_at_if_loaded(cp, index); | |
| 1821 if (k == NULL) return NULL; | |
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1822 return (jclass) JNIHandles::make_local(k->java_mirror()); |
| 0 | 1823 } |
| 1824 JVM_END | |
| 1825 | |
| 1826 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 1827 constantTag tag = cp->tag_at(index); | |
| 1828 if (!tag.is_method() && !tag.is_interface_method()) { | |
| 1829 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1830 } | |
| 1831 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
| 1832 klassOop k_o; | |
| 1833 if (force_resolution) { | |
| 1834 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 1835 } else { | |
| 1836 k_o = constantPoolOopDesc::klass_at_if_loaded(cp, klass_ref); | |
| 1837 if (k_o == NULL) return NULL; | |
| 1838 } | |
| 1839 instanceKlassHandle k(THREAD, k_o); | |
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1840 Symbol* name = cp->uncached_name_ref_at(index); |
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1841 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 1842 methodHandle m (THREAD, k->find_method(name, sig)); |
| 1843 if (m.is_null()) { | |
| 1844 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
| 1845 } | |
| 1846 oop method; | |
| 1847 if (!m->is_initializer() || m->is_static()) { | |
| 1848 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
| 1849 } else { | |
| 1850 method = Reflection::new_constructor(m, CHECK_NULL); | |
| 1851 } | |
| 1852 return JNIHandles::make_local(method); | |
| 1853 } | |
| 1854 | |
| 1855 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1856 { | |
| 1857 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
| 1858 JvmtiVMObjectAllocEventCollector oam; | |
| 1859 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1860 bounds_check(cp, index, CHECK_NULL); | |
| 1861 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
| 1862 return res; | |
| 1863 } | |
| 1864 JVM_END | |
| 1865 | |
| 1866 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1867 { | |
| 1868 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
| 1869 JvmtiVMObjectAllocEventCollector oam; | |
| 1870 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1871 bounds_check(cp, index, CHECK_NULL); | |
| 1872 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
| 1873 return res; | |
| 1874 } | |
| 1875 JVM_END | |
| 1876 | |
| 1877 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 1878 constantTag tag = cp->tag_at(index); | |
| 1879 if (!tag.is_field()) { | |
| 1880 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1881 } | |
| 1882 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
| 1883 klassOop k_o; | |
| 1884 if (force_resolution) { | |
| 1885 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 1886 } else { | |
| 1887 k_o = constantPoolOopDesc::klass_at_if_loaded(cp, klass_ref); | |
| 1888 if (k_o == NULL) return NULL; | |
| 1889 } | |
| 1890 instanceKlassHandle k(THREAD, k_o); | |
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1891 Symbol* name = cp->uncached_name_ref_at(index); |
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1892 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 1893 fieldDescriptor fd; |
| 1894 klassOop target_klass = k->find_field(name, sig, &fd); | |
| 1895 if (target_klass == NULL) { | |
| 1896 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
| 1897 } | |
| 1898 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
| 1899 return JNIHandles::make_local(field); | |
| 1900 } | |
| 1901 | |
| 1902 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1903 { | |
| 1904 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
| 1905 JvmtiVMObjectAllocEventCollector oam; | |
| 1906 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1907 bounds_check(cp, index, CHECK_NULL); | |
| 1908 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
| 1909 return res; | |
| 1910 } | |
| 1911 JVM_END | |
| 1912 | |
| 1913 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1914 { | |
| 1915 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
| 1916 JvmtiVMObjectAllocEventCollector oam; | |
| 1917 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1918 bounds_check(cp, index, CHECK_NULL); | |
| 1919 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
| 1920 return res; | |
| 1921 } | |
| 1922 JVM_END | |
| 1923 | |
| 1924 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1925 { | |
| 1926 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
| 1927 JvmtiVMObjectAllocEventCollector oam; | |
| 1928 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1929 bounds_check(cp, index, CHECK_NULL); | |
| 1930 constantTag tag = cp->tag_at(index); | |
| 1931 if (!tag.is_field_or_method()) { | |
| 1932 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1933 } | |
| 1934 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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1935 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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1936 Symbol* member_name = cp->uncached_name_ref_at(index); |
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1937 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
| 1142 | 1938 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
| 0 | 1939 objArrayHandle dest(THREAD, dest_o); |
| 1940 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
| 1941 dest->obj_at_put(0, str()); | |
| 1942 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
| 1943 dest->obj_at_put(1, str()); | |
| 1944 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
| 1945 dest->obj_at_put(2, str()); | |
| 1946 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 1947 } | |
| 1948 JVM_END | |
| 1949 | |
| 1950 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1951 { | |
| 1952 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
| 1953 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1954 bounds_check(cp, index, CHECK_0); | |
| 1955 constantTag tag = cp->tag_at(index); | |
| 1956 if (!tag.is_int()) { | |
| 1957 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1958 } | |
| 1959 return cp->int_at(index); | |
| 1960 } | |
| 1961 JVM_END | |
| 1962 | |
| 1963 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1964 { | |
| 1965 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
| 1966 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1967 bounds_check(cp, index, CHECK_(0L)); | |
| 1968 constantTag tag = cp->tag_at(index); | |
| 1969 if (!tag.is_long()) { | |
| 1970 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1971 } | |
| 1972 return cp->long_at(index); | |
| 1973 } | |
| 1974 JVM_END | |
| 1975 | |
| 1976 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1977 { | |
| 1978 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
| 1979 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1980 bounds_check(cp, index, CHECK_(0.0f)); | |
| 1981 constantTag tag = cp->tag_at(index); | |
| 1982 if (!tag.is_float()) { | |
| 1983 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1984 } | |
| 1985 return cp->float_at(index); | |
| 1986 } | |
| 1987 JVM_END | |
| 1988 | |
| 1989 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1990 { | |
| 1991 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
| 1992 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1993 bounds_check(cp, index, CHECK_(0.0)); | |
| 1994 constantTag tag = cp->tag_at(index); | |
| 1995 if (!tag.is_double()) { | |
| 1996 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1997 } | |
| 1998 return cp->double_at(index); | |
| 1999 } | |
| 2000 JVM_END | |
| 2001 | |
| 2002 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 2003 { | |
| 2004 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
| 2005 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 2006 bounds_check(cp, index, CHECK_NULL); | |
| 2007 constantTag tag = cp->tag_at(index); | |
| 2008 if (!tag.is_string() && !tag.is_unresolved_string()) { | |
| 2009 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2010 } | |
| 2011 oop str = cp->string_at(index, CHECK_NULL); | |
| 2012 return (jstring) JNIHandles::make_local(str); | |
| 2013 } | |
| 2014 JVM_END | |
| 2015 | |
| 2016 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 2017 { | |
| 2018 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
| 2019 JvmtiVMObjectAllocEventCollector oam; | |
| 2020 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 2021 bounds_check(cp, index, CHECK_NULL); | |
| 2022 constantTag tag = cp->tag_at(index); | |
| 2023 if (!tag.is_symbol()) { | |
| 2024 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2025 } | |
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2026 Symbol* sym = cp->symbol_at(index); |
| 0 | 2027 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 2028 return (jstring) JNIHandles::make_local(str()); | |
| 2029 } | |
| 2030 JVM_END | |
| 2031 | |
| 2032 | |
| 2033 // Assertion support. ////////////////////////////////////////////////////////// | |
| 2034 | |
| 2035 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
| 2036 JVMWrapper("JVM_DesiredAssertionStatus"); | |
| 2037 assert(cls != NULL, "bad class"); | |
| 2038 | |
| 2039 oop r = JNIHandles::resolve(cls); | |
| 2040 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
| 2041 if (java_lang_Class::is_primitive(r)) return false; | |
| 2042 | |
| 2043 klassOop k = java_lang_Class::as_klassOop(r); | |
| 2044 assert(Klass::cast(k)->oop_is_instance(), "must be an instance klass"); | |
| 2045 if (! Klass::cast(k)->oop_is_instance()) return false; | |
| 2046 | |
| 2047 ResourceMark rm(THREAD); | |
| 2048 const char* name = Klass::cast(k)->name()->as_C_string(); | |
| 2049 bool system_class = Klass::cast(k)->class_loader() == NULL; | |
| 2050 return JavaAssertions::enabled(name, system_class); | |
| 2051 | |
| 2052 JVM_END | |
| 2053 | |
| 2054 | |
| 2055 // Return a new AssertionStatusDirectives object with the fields filled in with | |
| 2056 // command-line assertion arguments (i.e., -ea, -da). | |
| 2057 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
| 2058 JVMWrapper("JVM_AssertionStatusDirectives"); | |
| 2059 JvmtiVMObjectAllocEventCollector oam; | |
| 2060 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
| 2061 return JNIHandles::make_local(env, asd); | |
| 2062 JVM_END | |
| 2063 | |
| 2064 // Verification //////////////////////////////////////////////////////////////////////////////// | |
| 2065 | |
| 2066 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
| 2067 | |
| 2068 // RedefineClasses support: bug 6214132 caused verification to fail. | |
| 2069 // All functions from this section should call the jvmtiThreadSate function: | |
| 2070 // klassOop class_to_verify_considering_redefinition(klassOop klass). | |
| 2071 // The function returns a klassOop of the _scratch_class if the verifier | |
| 2072 // was invoked in the middle of the class redefinition. | |
| 2073 // Otherwise it returns its argument value which is the _the_class klassOop. | |
| 2074 // Please, refer to the description in the jvmtiThreadSate.hpp. | |
| 2075 | |
| 2076 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
| 2077 JVMWrapper("JVM_GetClassNameUTF"); | |
| 2078 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2079 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2080 return Klass::cast(k)->name()->as_utf8(); | |
| 2081 JVM_END | |
| 2082 | |
| 2083 | |
| 2084 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
| 2085 JVMWrapper("JVM_GetClassCPTypes"); | |
| 2086 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2087 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2088 // types will have length zero if this is not an instanceKlass | |
| 2089 // (length is determined by call to JVM_GetClassCPEntriesCount) | |
| 2090 if (Klass::cast(k)->oop_is_instance()) { | |
| 2091 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2092 for (int index = cp->length() - 1; index >= 0; index--) { | |
| 2093 constantTag tag = cp->tag_at(index); | |
| 2094 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : | |
| 2095 (tag.is_unresolved_string()) ? JVM_CONSTANT_String : tag.value(); | |
| 2096 } | |
| 2097 } | |
| 2098 JVM_END | |
| 2099 | |
| 2100 | |
| 2101 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
| 2102 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
| 2103 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2104 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2105 if (!Klass::cast(k)->oop_is_instance()) | |
| 2106 return 0; | |
| 2107 return instanceKlass::cast(k)->constants()->length(); | |
| 2108 JVM_END | |
| 2109 | |
| 2110 | |
| 2111 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
| 2112 JVMWrapper("JVM_GetClassFieldsCount"); | |
| 2113 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2114 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2115 if (!Klass::cast(k)->oop_is_instance()) | |
| 2116 return 0; | |
| 3938 | 2117 return instanceKlass::cast(k)->java_fields_count(); |
| 0 | 2118 JVM_END |
| 2119 | |
| 2120 | |
| 2121 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
| 2122 JVMWrapper("JVM_GetClassMethodsCount"); | |
| 2123 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2124 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2125 if (!Klass::cast(k)->oop_is_instance()) | |
| 2126 return 0; | |
| 2127 return instanceKlass::cast(k)->methods()->length(); | |
| 2128 JVM_END | |
| 2129 | |
| 2130 | |
| 2131 // The following methods, used for the verifier, are never called with | |
| 2132 // array klasses, so a direct cast to instanceKlass is safe. | |
| 2133 // Typically, these methods are called in a loop with bounds determined | |
| 2134 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
| 2135 // zero for arrays. | |
| 2136 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
| 2137 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
| 2138 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2139 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2140 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2141 int length = methodOop(method)->checked_exceptions_length(); | |
| 2142 if (length > 0) { | |
| 2143 CheckedExceptionElement* table= methodOop(method)->checked_exceptions_start(); | |
| 2144 for (int i = 0; i < length; i++) { | |
| 2145 exceptions[i] = table[i].class_cp_index; | |
| 2146 } | |
| 2147 } | |
| 2148 JVM_END | |
| 2149 | |
| 2150 | |
| 2151 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
| 2152 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
| 2153 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2154 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2155 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2156 return methodOop(method)->checked_exceptions_length(); | |
| 2157 JVM_END | |
| 2158 | |
| 2159 | |
| 2160 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
| 2161 JVMWrapper("JVM_GetMethodIxByteCode"); | |
| 2162 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2163 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2164 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2165 memcpy(code, methodOop(method)->code_base(), methodOop(method)->code_size()); | |
| 2166 JVM_END | |
| 2167 | |
| 2168 | |
| 2169 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
| 2170 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
| 2171 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2172 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2173 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2174 return methodOop(method)->code_size(); | |
| 2175 JVM_END | |
| 2176 | |
| 2177 | |
| 2178 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
| 2179 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
| 2180 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2181 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2182 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
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2183 ExceptionTable extable((methodOop(method))); |
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2184 entry->start_pc = extable.start_pc(entry_index); |
|
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diff
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|
2185 entry->end_pc = extable.end_pc(entry_index); |
|
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diff
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|
2186 entry->handler_pc = extable.handler_pc(entry_index); |
|
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diff
changeset
|
2187 entry->catchType = extable.catch_type_index(entry_index); |
| 0 | 2188 JVM_END |
| 2189 | |
| 2190 | |
| 2191 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
| 2192 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
| 2193 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2194 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2195 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
|
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|
2196 return methodOop(method)->exception_table_length(); |
| 0 | 2197 JVM_END |
| 2198 | |
| 2199 | |
| 2200 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
| 2201 JVMWrapper("JVM_GetMethodIxModifiers"); | |
| 2202 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2203 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2204 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2205 return methodOop(method)->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 2206 JVM_END | |
| 2207 | |
| 2208 | |
| 2209 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
| 2210 JVMWrapper("JVM_GetFieldIxModifiers"); | |
| 2211 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2212 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 3938 | 2213 return instanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
| 0 | 2214 JVM_END |
| 2215 | |
| 2216 | |
| 2217 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
| 2218 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
| 2219 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2220 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2221 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2222 return methodOop(method)->max_locals(); | |
| 2223 JVM_END | |
| 2224 | |
| 2225 | |
| 2226 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
| 2227 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
| 2228 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2229 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2230 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2231 return methodOop(method)->size_of_parameters(); | |
| 2232 JVM_END | |
| 2233 | |
| 2234 | |
| 2235 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
| 2236 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
| 2237 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2238 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2239 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2240 return methodOop(method)->max_stack(); | |
| 2241 JVM_END | |
| 2242 | |
| 2243 | |
| 2244 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
| 2245 JVMWrapper("JVM_IsConstructorIx"); | |
| 2246 ResourceMark rm(THREAD); | |
| 2247 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2248 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2249 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2250 return methodOop(method)->name() == vmSymbols::object_initializer_name(); | |
| 2251 JVM_END | |
| 2252 | |
| 2253 | |
| 2254 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) | |
| 2255 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
| 2256 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2257 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2258 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2259 return methodOop(method)->name()->as_utf8(); | |
| 2260 JVM_END | |
| 2261 | |
| 2262 | |
| 2263 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
| 2264 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
| 2265 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2266 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2267 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2268 return methodOop(method)->signature()->as_utf8(); | |
| 2269 JVM_END | |
| 2270 | |
| 2271 /** | |
| 2272 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
| 2273 * read entries in the constant pool. Since the old verifier always | |
| 2274 * works on a copy of the code, it will not see any rewriting that | |
| 2275 * may possibly occur in the middle of verification. So it is important | |
| 2276 * that nothing it calls tries to use the cpCache instead of the raw | |
| 2277 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
| 2278 */ | |
| 2279 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2280 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
| 2281 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2282 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2283 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2284 switch (cp->tag_at(cp_index).value()) { | |
| 2285 case JVM_CONSTANT_Fieldref: | |
| 2286 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
| 2287 default: | |
| 2288 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
| 2289 } | |
| 2290 ShouldNotReachHere(); | |
| 2291 return NULL; | |
| 2292 JVM_END | |
| 2293 | |
| 2294 | |
| 2295 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2296 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
| 2297 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2298 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2299 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2300 switch (cp->tag_at(cp_index).value()) { | |
| 2301 case JVM_CONSTANT_InterfaceMethodref: | |
| 2302 case JVM_CONSTANT_Methodref: | |
|
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|
2303 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2304 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
| 2305 default: | |
| 2306 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
| 2307 } | |
| 2308 ShouldNotReachHere(); | |
| 2309 return NULL; | |
| 2310 JVM_END | |
| 2311 | |
| 2312 | |
| 2313 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2314 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
| 2315 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2316 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2317 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2318 switch (cp->tag_at(cp_index).value()) { | |
| 2319 case JVM_CONSTANT_InterfaceMethodref: | |
| 2320 case JVM_CONSTANT_Methodref: | |
|
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diff
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|
2321 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2322 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
| 2323 default: | |
| 2324 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
| 2325 } | |
| 2326 ShouldNotReachHere(); | |
| 2327 return NULL; | |
| 2328 JVM_END | |
| 2329 | |
| 2330 | |
| 2331 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2332 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
| 2333 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2334 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2335 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2336 switch (cp->tag_at(cp_index).value()) { | |
| 2337 case JVM_CONSTANT_Fieldref: | |
| 2338 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
| 2339 default: | |
| 2340 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
| 2341 } | |
| 2342 ShouldNotReachHere(); | |
| 2343 return NULL; | |
| 2344 JVM_END | |
| 2345 | |
| 2346 | |
| 2347 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2348 JVMWrapper("JVM_GetCPClassNameUTF"); | |
| 2349 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2350 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2351 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
|
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|
2352 Symbol* classname = cp->klass_name_at(cp_index); |
| 0 | 2353 return classname->as_utf8(); |
| 2354 JVM_END | |
| 2355 | |
| 2356 | |
| 2357 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2358 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
| 2359 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2360 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2361 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2362 switch (cp->tag_at(cp_index).value()) { | |
| 2363 case JVM_CONSTANT_Fieldref: { | |
| 2364 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
|
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|
2365 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2366 return classname->as_utf8(); |
| 2367 } | |
| 2368 default: | |
| 2369 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
| 2370 } | |
| 2371 ShouldNotReachHere(); | |
| 2372 return NULL; | |
| 2373 JVM_END | |
| 2374 | |
| 2375 | |
| 2376 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2377 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
| 2378 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2379 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2380 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2381 switch (cp->tag_at(cp_index).value()) { | |
| 2382 case JVM_CONSTANT_Methodref: | |
| 2383 case JVM_CONSTANT_InterfaceMethodref: { | |
| 2384 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
|
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|
2385 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2386 return classname->as_utf8(); |
| 2387 } | |
| 2388 default: | |
| 2389 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
| 2390 } | |
| 2391 ShouldNotReachHere(); | |
| 2392 return NULL; | |
| 2393 JVM_END | |
| 2394 | |
| 2395 | |
| 3938 | 2396 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
| 0 | 2397 JVMWrapper("JVM_GetCPFieldModifiers"); |
| 2398 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2399 klassOop k_called = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(called_cls)); | |
| 2400 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2401 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
| 2402 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2403 constantPoolOop cp_called = instanceKlass::cast(k_called)->constants(); | |
| 2404 switch (cp->tag_at(cp_index).value()) { | |
| 2405 case JVM_CONSTANT_Fieldref: { | |
|
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|
2406 Symbol* name = cp->uncached_name_ref_at(cp_index); |
|
3582bf76420e
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2162
diff
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|
2407 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
| 3938 | 2408 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
| 2409 if (fs.name() == name && fs.signature() == signature) { | |
| 2410 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
| 0 | 2411 } |
| 2412 } | |
| 2413 return -1; | |
| 2414 } | |
| 2415 default: | |
| 2416 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
| 2417 } | |
| 2418 ShouldNotReachHere(); | |
| 2419 return 0; | |
| 2420 JVM_END | |
| 2421 | |
| 2422 | |
| 2423 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
| 2424 JVMWrapper("JVM_GetCPMethodModifiers"); | |
| 2425 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2426 klassOop k_called = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(called_cls)); | |
| 2427 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2428 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
| 2429 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2430 switch (cp->tag_at(cp_index).value()) { | |
| 2431 case JVM_CONSTANT_Methodref: | |
| 2432 case JVM_CONSTANT_InterfaceMethodref: { | |
|
2177
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|
2433 Symbol* name = cp->uncached_name_ref_at(cp_index); |
|
3582bf76420e
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2162
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|
2434 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
| 0 | 2435 objArrayOop methods = instanceKlass::cast(k_called)->methods(); |
| 2436 int methods_count = methods->length(); | |
| 2437 for (int i = 0; i < methods_count; i++) { | |
| 2438 methodOop method = methodOop(methods->obj_at(i)); | |
| 2439 if (method->name() == name && method->signature() == signature) { | |
| 2440 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 2441 } | |
| 2442 } | |
| 2443 return -1; | |
| 2444 } | |
| 2445 default: | |
| 2446 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
| 2447 } | |
| 2448 ShouldNotReachHere(); | |
| 2449 return 0; | |
| 2450 JVM_END | |
| 2451 | |
| 2452 | |
| 2453 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
| 2454 | |
| 2455 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
| 2456 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
| 2457 JVM_END | |
| 2458 | |
| 2459 | |
| 2460 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
| 2461 JVMWrapper("JVM_IsSameClassPackage"); | |
| 2462 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
| 2463 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
| 2464 klassOop klass1 = java_lang_Class::as_klassOop(class1_mirror); | |
| 2465 klassOop klass2 = java_lang_Class::as_klassOop(class2_mirror); | |
| 2466 return (jboolean) Reflection::is_same_class_package(klass1, klass2); | |
| 2467 JVM_END | |
| 2468 | |
| 2469 | |
| 2470 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
| 2471 | |
| 2472 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
| 2473 JVMWrapper2("JVM_Open (%s)", fname); | |
| 2474 | |
| 2475 //%note jvm_r6 | |
|
1980
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ikrylov
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diff
changeset
|
2476 int result = os::open(fname, flags, mode); |
| 0 | 2477 if (result >= 0) { |
| 2478 return result; | |
| 2479 } else { | |
| 2480 switch(errno) { | |
| 2481 case EEXIST: | |
| 2482 return JVM_EEXIST; | |
| 2483 default: | |
| 2484 return -1; | |
| 2485 } | |
| 2486 } | |
| 2487 JVM_END | |
| 2488 | |
| 2489 | |
| 2490 JVM_LEAF(jint, JVM_Close(jint fd)) | |
| 2491 JVMWrapper2("JVM_Close (0x%x)", fd); | |
| 2492 //%note jvm_r6 | |
|
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828eafbd85cc
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ikrylov
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diff
changeset
|
2493 return os::close(fd); |
| 0 | 2494 JVM_END |
| 2495 | |
| 2496 | |
| 2497 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
| 2498 JVMWrapper2("JVM_Read (0x%x)", fd); | |
| 2499 | |
| 2500 //%note jvm_r6 | |
|
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parents:
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diff
changeset
|
2501 return (jint)os::restartable_read(fd, buf, nbytes); |
| 0 | 2502 JVM_END |
| 2503 | |
| 2504 | |
| 2505 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
| 2506 JVMWrapper2("JVM_Write (0x%x)", fd); | |
| 2507 | |
| 2508 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2509 return (jint)os::write(fd, buf, nbytes); |
| 0 | 2510 JVM_END |
| 2511 | |
| 2512 | |
| 2513 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
| 2514 JVMWrapper2("JVM_Available (0x%x)", fd); | |
| 2515 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2516 return os::available(fd, pbytes); |
| 0 | 2517 JVM_END |
| 2518 | |
| 2519 | |
| 2520 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
| 2521 JVMWrapper4("JVM_Lseek (0x%x, %Ld, %d)", fd, offset, whence); | |
| 2522 //%note jvm_r6 | |
|
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828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2523 return os::lseek(fd, offset, whence); |
| 0 | 2524 JVM_END |
| 2525 | |
| 2526 | |
| 2527 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
| 2528 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
|
2529 return os::ftruncate(fd, length); |
| 0 | 2530 JVM_END |
| 2531 | |
| 2532 | |
| 2533 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
| 2534 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
| 2535 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2536 return os::fsync(fd); |
| 0 | 2537 JVM_END |
| 2538 | |
| 2539 | |
| 2540 // Printing support ////////////////////////////////////////////////// | |
| 2541 extern "C" { | |
| 2542 | |
| 2543 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { | |
| 2544 // see bug 4399518, 4417214 | |
| 2545 if ((intptr_t)count <= 0) return -1; | |
| 2546 return vsnprintf(str, count, fmt, args); | |
| 2547 } | |
| 2548 | |
| 2549 | |
| 2550 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { | |
| 2551 va_list args; | |
| 2552 int len; | |
| 2553 va_start(args, fmt); | |
| 2554 len = jio_vsnprintf(str, count, fmt, args); | |
| 2555 va_end(args); | |
| 2556 return len; | |
| 2557 } | |
| 2558 | |
| 2559 | |
| 2560 int jio_fprintf(FILE* f, const char *fmt, ...) { | |
| 2561 int len; | |
| 2562 va_list args; | |
| 2563 va_start(args, fmt); | |
| 2564 len = jio_vfprintf(f, fmt, args); | |
| 2565 va_end(args); | |
| 2566 return len; | |
| 2567 } | |
| 2568 | |
| 2569 | |
| 2570 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { | |
| 2571 if (Arguments::vfprintf_hook() != NULL) { | |
| 2572 return Arguments::vfprintf_hook()(f, fmt, args); | |
| 2573 } else { | |
| 2574 return vfprintf(f, fmt, args); | |
| 2575 } | |
| 2576 } | |
| 2577 | |
| 2578 | |
| 2191 | 2579 JNIEXPORT int jio_printf(const char *fmt, ...) { |
| 0 | 2580 int len; |
| 2581 va_list args; | |
| 2582 va_start(args, fmt); | |
| 2583 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
| 2584 va_end(args); | |
| 2585 return len; | |
| 2586 } | |
| 2587 | |
| 2588 | |
| 2589 // HotSpot specific jio method | |
| 2590 void jio_print(const char* s) { | |
| 2591 // Try to make this function as atomic as possible. | |
| 2592 if (Arguments::vfprintf_hook() != NULL) { | |
| 2593 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
| 2594 } else { | |
|
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
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diff
changeset
|
2595 // Make an unused local variable to avoid warning from gcc 4.x compiler. |
|
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6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
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diff
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|
2596 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
| 0 | 2597 } |
| 2598 } | |
| 2599 | |
| 2600 } // Extern C | |
| 2601 | |
| 2602 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
| 2603 | |
| 2604 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
| 2605 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
| 2606 // OSThread objects. The exception to this rule is when the target object is the thread | |
| 2607 // doing the operation, in which case we know that the thread won't exit until the | |
| 2608 // operation is done (all exits being voluntary). There are a few cases where it is | |
| 2609 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
| 2610 // you are alive. While these can still happen, they are not subject to deadlocks if | |
| 2611 // the lock is held while the operation occurs (this is not the case for suspend, for | |
| 2612 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
| 2613 // implementation is local to this file, we always lock Threads_lock for that one. | |
| 2614 | |
| 2615 static void thread_entry(JavaThread* thread, TRAPS) { | |
| 2616 HandleMark hm(THREAD); | |
| 2617 Handle obj(THREAD, thread->threadObj()); | |
| 2618 JavaValue result(T_VOID); | |
| 2619 JavaCalls::call_virtual(&result, | |
| 2620 obj, | |
| 1142 | 2621 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
|
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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2162
diff
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|
2622 vmSymbols::run_method_name(), |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2162
diff
changeset
|
2623 vmSymbols::void_method_signature(), |
| 0 | 2624 THREAD); |
| 2625 } | |
| 2626 | |
| 2627 | |
| 2628 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
| 2629 JVMWrapper("JVM_StartThread"); | |
| 2630 JavaThread *native_thread = NULL; | |
| 2631 | |
| 2632 // We cannot hold the Threads_lock when we throw an exception, | |
| 2633 // due to rank ordering issues. Example: we might need to grab the | |
| 2634 // Heap_lock while we construct the exception. | |
| 2635 bool throw_illegal_thread_state = false; | |
| 2636 | |
| 2637 // We must release the Threads_lock before we can post a jvmti event | |
| 2638 // in Thread::start. | |
| 2639 { | |
| 2640 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
| 2641 // we operate. | |
| 2642 MutexLocker mu(Threads_lock); | |
| 2643 | |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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1980
diff
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|
2644 // 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
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diff
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|
2645 // 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
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diff
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|
2646 // 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
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1980
diff
changeset
|
2647 // 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
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1980
diff
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|
2648 // (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
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diff
changeset
|
2649 // have to check for this |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
changeset
|
2650 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
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diff
changeset
|
2651 throw_illegal_thread_state = true; |
| 0 | 2652 } else { |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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1980
diff
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|
2653 // 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
|
2654 // 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
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diff
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|
2655 |
| 0 | 2656 jlong size = |
| 2657 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
| 2658 // Allocate the C++ Thread structure and create the native thread. The | |
| 2659 // stack size retrieved from java is signed, but the constructor takes | |
| 2660 // size_t (an unsigned type), so avoid passing negative values which would | |
| 2661 // result in really large stacks. | |
| 2662 size_t sz = size > 0 ? (size_t) size : 0; | |
| 2663 native_thread = new JavaThread(&thread_entry, sz); | |
| 2664 | |
| 2665 // At this point it may be possible that no osthread was created for the | |
| 2666 // JavaThread due to lack of memory. Check for this situation and throw | |
| 2667 // an exception if necessary. Eventually we may want to change this so | |
| 2668 // that we only grab the lock if the thread was created successfully - | |
| 2669 // then we can also do this check and throw the exception in the | |
| 2670 // JavaThread constructor. | |
| 2671 if (native_thread->osthread() != NULL) { | |
| 2672 // Note: the current thread is not being used within "prepare". | |
| 2673 native_thread->prepare(jthread); | |
| 2674 } | |
| 2675 } | |
| 2676 } | |
| 2677 | |
| 2678 if (throw_illegal_thread_state) { | |
| 2679 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
| 2680 } | |
| 2681 | |
| 2682 assert(native_thread != NULL, "Starting null thread?"); | |
| 2683 | |
| 2684 if (native_thread->osthread() == NULL) { | |
| 2685 // No one should hold a reference to the 'native_thread'. | |
| 2686 delete native_thread; | |
| 2687 if (JvmtiExport::should_post_resource_exhausted()) { | |
| 2688 JvmtiExport::post_resource_exhausted( | |
| 2689 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
| 2690 "unable to create new native thread"); | |
| 2691 } | |
| 2692 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
| 2693 "unable to create new native thread"); | |
| 2694 } | |
| 2695 | |
| 2696 Thread::start(native_thread); | |
| 2697 | |
| 2698 JVM_END | |
| 2699 | |
| 2700 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
| 2701 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
| 2702 // but is thought to be reliable and simple. In the case, where the receiver is the | |
|
2162
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
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|
2703 // same thread as the sender, no safepoint is needed. |
| 0 | 2704 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
| 2705 JVMWrapper("JVM_StopThread"); | |
| 2706 | |
| 2707 oop java_throwable = JNIHandles::resolve(throwable); | |
| 2708 if (java_throwable == NULL) { | |
| 2709 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 2710 } | |
| 2711 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2712 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
|
4872
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
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parents:
4717
diff
changeset
|
2713 Events::log_exception(JavaThread::current(), |
|
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
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parents:
4717
diff
changeset
|
2714 "JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", |
|
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
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parents:
4717
diff
changeset
|
2715 receiver, (address)java_thread, throwable); |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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1980
diff
changeset
|
2716 // First check if thread is alive |
| 0 | 2717 if (receiver != NULL) { |
| 2718 // Check if exception is getting thrown at self (use oop equality, since the | |
| 2719 // target object might exit) | |
| 2720 if (java_thread == thread->threadObj()) { | |
| 2721 THROW_OOP(java_throwable); | |
| 2722 } else { | |
| 2723 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
| 2724 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
| 2725 } | |
| 2726 } | |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
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|
2727 else { |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2728 // Either: |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2729 // - 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
|
2730 // - 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
|
2731 // 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
|
2732 // 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
|
2733 // 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
|
2734 // 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
|
2735 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
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1980
diff
changeset
|
2736 } |
| 0 | 2737 JVM_END |
| 2738 | |
| 2739 | |
| 2740 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
| 2741 JVMWrapper("JVM_IsThreadAlive"); | |
| 2742 | |
| 2743 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
| 2744 return java_lang_Thread::is_alive(thread_oop); | |
| 2745 JVM_END | |
| 2746 | |
| 2747 | |
| 2748 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
| 2749 JVMWrapper("JVM_SuspendThread"); | |
| 2750 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2751 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
| 2752 | |
| 2753 if (receiver != NULL) { | |
| 2754 // thread has run and has not exited (still on threads list) | |
| 2755 | |
| 2756 { | |
| 2757 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
| 2758 if (receiver->is_external_suspend()) { | |
| 2759 // Don't allow nested external suspend requests. We can't return | |
| 2760 // an error from this interface so just ignore the problem. | |
| 2761 return; | |
| 2762 } | |
| 2763 if (receiver->is_exiting()) { // thread is in the process of exiting | |
| 2764 return; | |
| 2765 } | |
| 2766 receiver->set_external_suspend(); | |
| 2767 } | |
| 2768 | |
| 2769 // java_suspend() will catch threads in the process of exiting | |
| 2770 // and will ignore them. | |
| 2771 receiver->java_suspend(); | |
| 2772 | |
| 2773 // It would be nice to have the following assertion in all the | |
| 2774 // time, but it is possible for a racing resume request to have | |
| 2775 // resumed this thread right after we suspended it. Temporarily | |
| 2776 // enable this assertion if you are chasing a different kind of | |
| 2777 // bug. | |
| 2778 // | |
| 2779 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
| 2780 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
| 2781 } | |
| 2782 JVM_END | |
| 2783 | |
| 2784 | |
| 2785 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
| 2786 JVMWrapper("JVM_ResumeThread"); | |
| 2787 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
| 2788 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
| 2789 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
| 2790 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
| 2791 // looks at it. | |
| 2792 MutexLocker ml(Threads_lock); | |
| 2793 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 2794 if (thr != NULL) { | |
| 2795 // the thread has run and is not in the process of exiting | |
| 2796 thr->java_resume(); | |
| 2797 } | |
| 2798 JVM_END | |
| 2799 | |
| 2800 | |
| 2801 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
| 2802 JVMWrapper("JVM_SetThreadPriority"); | |
| 2803 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 2804 MutexLocker ml(Threads_lock); | |
| 2805 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2806 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
| 2807 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 2808 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
| 2809 Thread::set_priority(thr, (ThreadPriority)prio); | |
| 2810 } | |
| 2811 JVM_END | |
| 2812 | |
| 2813 | |
| 2814 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
| 2815 JVMWrapper("JVM_Yield"); | |
| 2816 if (os::dont_yield()) return; | |
| 4006 | 2817 #ifndef USDT2 |
|
1324
e392695de029
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1144
diff
changeset
|
2818 HS_DTRACE_PROBE0(hotspot, thread__yield); |
| 4006 | 2819 #else /* USDT2 */ |
| 2820 HOTSPOT_THREAD_YIELD(); | |
| 2821 #endif /* USDT2 */ | |
| 0 | 2822 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
| 2823 // Critical for similar threading behaviour | |
| 2824 if (ConvertYieldToSleep) { | |
| 2825 os::sleep(thread, MinSleepInterval, false); | |
| 2826 } else { | |
| 2827 os::yield(); | |
| 2828 } | |
| 2829 JVM_END | |
| 2830 | |
| 2831 | |
| 2832 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
| 2833 JVMWrapper("JVM_Sleep"); | |
| 2834 | |
| 2835 if (millis < 0) { | |
| 2836 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
| 2837 } | |
| 2838 | |
| 2839 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
| 2840 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 2841 } | |
| 2842 | |
| 2843 // Save current thread state and restore it at the end of this block. | |
| 2844 // And set new thread state to SLEEPING. | |
| 2845 JavaThreadSleepState jtss(thread); | |
| 2846 | |
| 4006 | 2847 #ifndef USDT2 |
|
1324
e392695de029
6935224: Adding new DTrace probes to work with Palantir
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parents:
1144
diff
changeset
|
2848 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); |
| 4006 | 2849 #else /* USDT2 */ |
| 2850 HOTSPOT_THREAD_SLEEP_BEGIN( | |
| 2851 millis); | |
| 2852 #endif /* USDT2 */ | |
|
1324
e392695de029
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1144
diff
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|
2853 |
| 0 | 2854 if (millis == 0) { |
| 2855 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
| 2856 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
| 2857 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
| 2858 // for SOLARIS | |
| 2859 if (ConvertSleepToYield) { | |
| 2860 os::yield(); | |
| 2861 } else { | |
| 2862 ThreadState old_state = thread->osthread()->get_state(); | |
| 2863 thread->osthread()->set_state(SLEEPING); | |
| 2864 os::sleep(thread, MinSleepInterval, false); | |
| 2865 thread->osthread()->set_state(old_state); | |
| 2866 } | |
| 2867 } else { | |
| 2868 ThreadState old_state = thread->osthread()->get_state(); | |
| 2869 thread->osthread()->set_state(SLEEPING); | |
| 2870 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
| 2871 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
| 2872 // us while we were sleeping. We do not overwrite those. | |
| 2873 if (!HAS_PENDING_EXCEPTION) { | |
| 4006 | 2874 #ifndef USDT2 |
|
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6935224: Adding new DTrace probes to work with Palantir
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1144
diff
changeset
|
2875 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); |
| 4006 | 2876 #else /* USDT2 */ |
| 2877 HOTSPOT_THREAD_SLEEP_END( | |
| 2878 1); | |
| 2879 #endif /* USDT2 */ | |
| 0 | 2880 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
| 2881 // to properly restore the thread state. That's likely wrong. | |
| 2882 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 2883 } | |
| 2884 } | |
| 2885 thread->osthread()->set_state(old_state); | |
| 2886 } | |
| 4006 | 2887 #ifndef USDT2 |
|
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1144
diff
changeset
|
2888 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); |
| 4006 | 2889 #else /* USDT2 */ |
| 2890 HOTSPOT_THREAD_SLEEP_END( | |
| 2891 0); | |
| 2892 #endif /* USDT2 */ | |
| 0 | 2893 JVM_END |
| 2894 | |
| 2895 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
| 2896 JVMWrapper("JVM_CurrentThread"); | |
| 2897 oop jthread = thread->threadObj(); | |
| 2898 assert (thread != NULL, "no current thread!"); | |
| 2899 return JNIHandles::make_local(env, jthread); | |
| 2900 JVM_END | |
| 2901 | |
| 2902 | |
| 2903 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
| 2904 JVMWrapper("JVM_CountStackFrames"); | |
| 2905 | |
| 2906 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 2907 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2908 bool throw_illegal_thread_state = false; | |
| 2909 int count = 0; | |
| 2910 | |
| 2911 { | |
| 2912 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 2913 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 2914 // acquire of the lock | |
| 2915 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 2916 | |
| 2917 if (thr == NULL) { | |
| 2918 // do nothing | |
| 2919 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
| 2920 // Check whether this java thread has been suspended already. If not, throws | |
| 2921 // IllegalThreadStateException. We defer to throw that exception until | |
| 2922 // Threads_lock is released since loading exception class has to leave VM. | |
| 2923 // The correct way to test a thread is actually suspended is | |
| 2924 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
| 2925 // the Threads_lock. The above tests are sufficient for our purposes | |
| 2926 // provided the walkability of the stack is stable - which it isn't | |
| 2927 // 100% but close enough for most practical purposes. | |
| 2928 throw_illegal_thread_state = true; | |
| 2929 } else { | |
| 2930 // Count all java activation, i.e., number of vframes | |
| 2931 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
| 2932 // Native frames are not counted | |
| 2933 if (!vfst.method()->is_native()) count++; | |
| 2934 } | |
| 2935 } | |
| 2936 } | |
| 2937 | |
| 2938 if (throw_illegal_thread_state) { | |
| 2939 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
| 2940 "this thread is not suspended"); | |
| 2941 } | |
| 2942 return count; | |
| 2943 JVM_END | |
| 2944 | |
| 2945 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
| 2946 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
| 2947 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
| 2948 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
| 2949 // outside the critical section. Threads_lock is hot so we want to minimize | |
| 2950 // the hold-time. A cleaner interface would be to decompose interrupt into | |
| 2951 // two steps. The 1st phase, performed under Threads_lock, would return | |
| 2952 // a closure that'd be invoked after Threads_lock was dropped. | |
| 2953 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
| 2954 // admit spurious wakeups. | |
| 2955 | |
| 2956 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
| 2957 JVMWrapper("JVM_Interrupt"); | |
| 2958 | |
| 2959 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 2960 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2961 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 2962 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 2963 // acquire of the lock | |
| 2964 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 2965 if (thr != NULL) { | |
| 2966 Thread::interrupt(thr); | |
| 2967 } | |
| 2968 JVM_END | |
| 2969 | |
| 2970 | |
| 2971 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
| 2972 JVMWrapper("JVM_IsInterrupted"); | |
| 2973 | |
| 2974 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 2975 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2976 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 2977 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 2978 // acquire of the lock | |
| 2979 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 2980 if (thr == NULL) { | |
| 2981 return JNI_FALSE; | |
| 2982 } else { | |
| 2983 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
| 2984 } | |
| 2985 JVM_END | |
| 2986 | |
| 2987 | |
| 2988 // Return true iff the current thread has locked the object passed in | |
| 2989 | |
| 2990 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
| 2991 JVMWrapper("JVM_HoldsLock"); | |
| 2992 assert(THREAD->is_Java_thread(), "sanity check"); | |
| 2993 if (obj == NULL) { | |
| 2994 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
| 2995 } | |
| 2996 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
| 2997 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
| 2998 JVM_END | |
| 2999 | |
| 3000 | |
| 3001 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
| 3002 JVMWrapper("JVM_DumpAllStacks"); | |
| 3003 VM_PrintThreads op; | |
| 3004 VMThread::execute(&op); | |
| 3005 if (JvmtiExport::should_post_data_dump()) { | |
| 3006 JvmtiExport::post_data_dump(); | |
| 3007 } | |
| 3008 JVM_END | |
| 3009 | |
| 4006 | 3010 JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name)) |
| 3011 JVMWrapper("JVM_SetNativeThreadName"); | |
| 3012 ResourceMark rm(THREAD); | |
| 3013 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3014 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 3015 // Thread naming only supported for the current thread, doesn't work for | |
| 3016 // target threads. | |
| 3017 if (Thread::current() == thr && !thr->has_attached_via_jni()) { | |
| 3018 // we don't set the name of an attached thread to avoid stepping | |
| 3019 // on other programs | |
| 3020 const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
| 3021 os::set_native_thread_name(thread_name); | |
| 3022 } | |
| 3023 JVM_END | |
| 0 | 3024 |
| 3025 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
| 3026 | |
| 3027 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
| 3028 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
| 3029 if (jthread->privileged_stack_top() == NULL) return false; | |
| 3030 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
| 3031 oop loader = jthread->privileged_stack_top()->class_loader(); | |
| 3032 if (loader == NULL) return true; | |
| 3033 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
| 3034 if (trusted) return true; | |
| 3035 } | |
| 3036 return false; | |
| 3037 } | |
| 3038 | |
| 3039 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
| 3040 JVMWrapper("JVM_CurrentLoadedClass"); | |
| 3041 ResourceMark rm(THREAD); | |
| 3042 | |
| 3043 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3044 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3045 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3046 if (trusted) return NULL; | |
| 3047 | |
| 3048 methodOop m = vfst.method(); | |
| 3049 if (!m->is_native()) { | |
| 3050 klassOop holder = m->method_holder(); | |
| 3051 oop loader = instanceKlass::cast(holder)->class_loader(); | |
| 3052 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { | |
| 3053 return (jclass) JNIHandles::make_local(env, Klass::cast(holder)->java_mirror()); | |
| 3054 } | |
| 3055 } | |
| 3056 } | |
| 3057 return NULL; | |
| 3058 JVM_END | |
| 3059 | |
| 3060 | |
| 3061 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
| 3062 JVMWrapper("JVM_CurrentClassLoader"); | |
| 3063 ResourceMark rm(THREAD); | |
| 3064 | |
| 3065 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3066 | |
| 3067 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3068 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3069 if (trusted) return NULL; | |
| 3070 | |
| 3071 methodOop m = vfst.method(); | |
| 3072 if (!m->is_native()) { | |
| 3073 klassOop holder = m->method_holder(); | |
| 3074 assert(holder->is_klass(), "just checking"); | |
| 3075 oop loader = instanceKlass::cast(holder)->class_loader(); | |
| 3076 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { | |
| 3077 return JNIHandles::make_local(env, loader); | |
| 3078 } | |
| 3079 } | |
| 3080 } | |
| 3081 return NULL; | |
| 3082 JVM_END | |
| 3083 | |
| 3084 | |
| 3085 // Utility object for collecting method holders walking down the stack | |
| 3086 class KlassLink: public ResourceObj { | |
| 3087 public: | |
| 3088 KlassHandle klass; | |
| 3089 KlassLink* next; | |
| 3090 | |
| 3091 KlassLink(KlassHandle k) { klass = k; next = NULL; } | |
| 3092 }; | |
| 3093 | |
| 3094 | |
| 3095 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
| 3096 JVMWrapper("JVM_GetClassContext"); | |
| 3097 ResourceMark rm(THREAD); | |
| 3098 JvmtiVMObjectAllocEventCollector oam; | |
| 3099 // Collect linked list of (handles to) method holders | |
| 3100 KlassLink* first = NULL; | |
| 3101 KlassLink* last = NULL; | |
| 3102 int depth = 0; | |
| 3103 | |
| 3104 for(vframeStream vfst(thread); !vfst.at_end(); vfst.security_get_caller_frame(1)) { | |
| 3105 // Native frames are not returned | |
| 3106 if (!vfst.method()->is_native()) { | |
| 3107 klassOop holder = vfst.method()->method_holder(); | |
| 3108 assert(holder->is_klass(), "just checking"); | |
| 3109 depth++; | |
| 3110 KlassLink* l = new KlassLink(KlassHandle(thread, holder)); | |
| 3111 if (first == NULL) { | |
| 3112 first = last = l; | |
| 3113 } else { | |
| 3114 last->next = l; | |
| 3115 last = l; | |
| 3116 } | |
| 3117 } | |
| 3118 } | |
| 3119 | |
| 3120 // Create result array of type [Ljava/lang/Class; | |
| 1142 | 3121 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), depth, CHECK_NULL); |
| 0 | 3122 // Fill in mirrors corresponding to method holders |
| 3123 int index = 0; | |
| 3124 while (first != NULL) { | |
| 3125 result->obj_at_put(index++, Klass::cast(first->klass())->java_mirror()); | |
| 3126 first = first->next; | |
| 3127 } | |
| 3128 assert(index == depth, "just checking"); | |
| 3129 | |
| 3130 return (jobjectArray) JNIHandles::make_local(env, result); | |
| 3131 JVM_END | |
| 3132 | |
| 3133 | |
| 3134 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
| 3135 JVMWrapper("JVM_ClassDepth"); | |
| 3136 ResourceMark rm(THREAD); | |
| 3137 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 3138 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
| 3139 | |
| 3140 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
|
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3141 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
|
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|
3142 if (class_name_sym == NULL) { |
| 0 | 3143 return -1; |
| 3144 } | |
| 3145 | |
| 3146 int depth = 0; | |
| 3147 | |
| 3148 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3149 if (!vfst.method()->is_native()) { | |
| 3150 klassOop holder = vfst.method()->method_holder(); | |
| 3151 assert(holder->is_klass(), "just checking"); | |
|
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3152 if (instanceKlass::cast(holder)->name() == class_name_sym) { |
| 0 | 3153 return depth; |
| 3154 } | |
| 3155 depth++; | |
| 3156 } | |
| 3157 } | |
| 3158 return -1; | |
| 3159 JVM_END | |
| 3160 | |
| 3161 | |
| 3162 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
| 3163 JVMWrapper("JVM_ClassLoaderDepth"); | |
| 3164 ResourceMark rm(THREAD); | |
| 3165 int depth = 0; | |
| 3166 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3167 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
| 3168 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3169 if (trusted) return -1; | |
| 3170 | |
| 3171 methodOop m = vfst.method(); | |
| 3172 if (!m->is_native()) { | |
| 3173 klassOop holder = m->method_holder(); | |
| 3174 assert(holder->is_klass(), "just checking"); | |
| 3175 oop loader = instanceKlass::cast(holder)->class_loader(); | |
| 3176 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { | |
| 3177 return depth; | |
| 3178 } | |
| 3179 depth++; | |
| 3180 } | |
| 3181 } | |
| 3182 return -1; | |
| 3183 JVM_END | |
| 3184 | |
| 3185 | |
| 3186 // java.lang.Package //////////////////////////////////////////////////////////////// | |
| 3187 | |
| 3188 | |
| 3189 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
| 3190 JVMWrapper("JVM_GetSystemPackage"); | |
| 3191 ResourceMark rm(THREAD); | |
| 3192 JvmtiVMObjectAllocEventCollector oam; | |
| 3193 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
| 3194 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
| 3195 return (jstring) JNIHandles::make_local(result); | |
| 3196 JVM_END | |
| 3197 | |
| 3198 | |
| 3199 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
| 3200 JVMWrapper("JVM_GetSystemPackages"); | |
| 3201 JvmtiVMObjectAllocEventCollector oam; | |
| 3202 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
| 3203 return (jobjectArray) JNIHandles::make_local(result); | |
| 3204 JVM_END | |
| 3205 | |
| 3206 | |
| 3207 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
| 3208 | |
| 3209 bool force_verify_field_access(klassOop current_class, klassOop field_class, AccessFlags access, bool classloader_only) { | |
| 3210 if (current_class == NULL) { | |
| 3211 return true; | |
| 3212 } | |
| 3213 if ((current_class == field_class) || access.is_public()) { | |
| 3214 return true; | |
| 3215 } | |
| 3216 | |
| 3217 if (access.is_protected()) { | |
| 3218 // See if current_class is a subclass of field_class | |
| 3219 if (Klass::cast(current_class)->is_subclass_of(field_class)) { | |
| 3220 return true; | |
| 3221 } | |
| 3222 } | |
| 3223 | |
| 3224 return (!access.is_private() && instanceKlass::cast(current_class)->is_same_class_package(field_class)); | |
| 3225 } | |
| 3226 | |
| 3227 | |
| 3228 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
| 3229 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
| 3230 JVMWrapper("JVM_AllocateNewObject"); | |
| 3231 JvmtiVMObjectAllocEventCollector oam; | |
| 3232 // Receiver is not used | |
| 3233 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
| 3234 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
| 3235 | |
| 3236 // Cannot instantiate primitive types | |
| 3237 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
| 3238 ResourceMark rm(THREAD); | |
| 3239 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3240 } | |
| 3241 | |
| 3242 // Arrays not allowed here, must use JVM_AllocateNewArray | |
| 3243 if (Klass::cast(java_lang_Class::as_klassOop(curr_mirror))->oop_is_javaArray() || | |
| 3244 Klass::cast(java_lang_Class::as_klassOop(init_mirror))->oop_is_javaArray()) { | |
| 3245 ResourceMark rm(THREAD); | |
| 3246 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3247 } | |
| 3248 | |
| 3249 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_klassOop(curr_mirror)); | |
| 3250 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_klassOop(init_mirror)); | |
| 3251 | |
| 3252 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
| 3253 | |
| 3254 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
| 3255 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
| 3256 | |
| 3257 // Make sure klass is initialized, since we are about to instantiate one of them. | |
| 3258 curr_klass->initialize(CHECK_NULL); | |
| 3259 | |
| 3260 methodHandle m (THREAD, | |
| 3261 init_klass->find_method(vmSymbols::object_initializer_name(), | |
| 3262 vmSymbols::void_method_signature())); | |
| 3263 if (m.is_null()) { | |
| 3264 ResourceMark rm(THREAD); | |
| 3265 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
| 3266 methodOopDesc::name_and_sig_as_C_string(Klass::cast(init_klass()), | |
| 3267 vmSymbols::object_initializer_name(), | |
| 3268 vmSymbols::void_method_signature())); | |
| 3269 } | |
| 3270 | |
| 3271 if (curr_klass == init_klass && !m->is_public()) { | |
| 3272 // Calling the constructor for class 'curr_klass'. | |
| 3273 // Only allow calls to a public no-arg constructor. | |
| 3274 // This path corresponds to creating an Externalizable object. | |
| 3275 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3276 } | |
| 3277 | |
| 3278 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
| 3279 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
| 3280 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3281 } | |
| 3282 | |
| 3283 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
| 3284 // Call constructor m. This might call a constructor higher up in the hierachy | |
| 3285 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
| 3286 | |
| 3287 return JNIHandles::make_local(obj()); | |
| 3288 JVM_END | |
| 3289 | |
| 3290 | |
| 3291 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
| 3292 JVMWrapper("JVM_AllocateNewArray"); | |
| 3293 JvmtiVMObjectAllocEventCollector oam; | |
| 3294 oop mirror = JNIHandles::resolve_non_null(currClass); | |
| 3295 | |
| 3296 if (java_lang_Class::is_primitive(mirror)) { | |
| 3297 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3298 } | |
| 3299 klassOop k = java_lang_Class::as_klassOop(mirror); | |
| 3300 oop result; | |
| 3301 | |
| 3302 if (k->klass_part()->oop_is_typeArray()) { | |
| 3303 // typeArray | |
| 3304 result = typeArrayKlass::cast(k)->allocate(length, CHECK_NULL); | |
| 3305 } else if (k->klass_part()->oop_is_objArray()) { | |
| 3306 // objArray | |
| 3307 objArrayKlassHandle oak(THREAD, k); | |
| 3308 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) | |
| 3309 result = oak->allocate(length, CHECK_NULL); | |
| 3310 } else { | |
| 3311 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3312 } | |
| 3313 return JNIHandles::make_local(env, result); | |
| 3314 JVM_END | |
| 3315 | |
| 3316 | |
| 3317 // Return the first non-null class loader up the execution stack, or null | |
| 3318 // if only code from the null class loader is on the stack. | |
| 3319 | |
| 3320 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
| 3321 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3322 // UseNewReflection | |
| 3323 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
| 3324 klassOop holder = vfst.method()->method_holder(); | |
| 3325 oop loader = instanceKlass::cast(holder)->class_loader(); | |
| 3326 if (loader != NULL) { | |
| 3327 return JNIHandles::make_local(env, loader); | |
| 3328 } | |
| 3329 } | |
| 3330 return NULL; | |
| 3331 JVM_END | |
| 3332 | |
| 3333 | |
| 3334 // Load a class relative to the most recent class on the stack with a non-null | |
| 3335 // classloader. | |
| 3336 // This function has been deprecated and should not be considered part of the | |
| 3337 // specified JVM interface. | |
| 3338 | |
| 3339 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
| 3340 jclass currClass, jstring currClassName)) | |
| 3341 JVMWrapper("JVM_LoadClass0"); | |
| 3342 // Receiver is not used | |
| 3343 ResourceMark rm(THREAD); | |
| 3344 | |
| 3345 // Class name argument is not guaranteed to be in internal format | |
| 3346 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
| 3347 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
| 3348 | |
| 3349 const char* str = java_lang_String::as_utf8_string(string()); | |
| 3350 | |
|
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3351 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
| 0 | 3352 // It's impossible to create this class; the name cannot fit |
| 3353 // into the constant pool. | |
| 3354 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
| 3355 } | |
| 3356 | |
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|
3357 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
| 0 | 3358 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
| 3359 // Find the most recent class on the stack with a non-null classloader | |
| 3360 oop loader = NULL; | |
| 3361 oop protection_domain = NULL; | |
| 3362 if (curr_klass.is_null()) { | |
| 3363 for (vframeStream vfst(thread); | |
| 3364 !vfst.at_end() && loader == NULL; | |
| 3365 vfst.next()) { | |
| 3366 if (!vfst.method()->is_native()) { | |
| 3367 klassOop holder = vfst.method()->method_holder(); | |
| 3368 loader = instanceKlass::cast(holder)->class_loader(); | |
| 3369 protection_domain = instanceKlass::cast(holder)->protection_domain(); | |
| 3370 } | |
| 3371 } | |
| 3372 } else { | |
| 3373 klassOop curr_klass_oop = java_lang_Class::as_klassOop(curr_klass()); | |
| 3374 loader = instanceKlass::cast(curr_klass_oop)->class_loader(); | |
| 3375 protection_domain = instanceKlass::cast(curr_klass_oop)->protection_domain(); | |
| 3376 } | |
| 3377 Handle h_loader(THREAD, loader); | |
| 3378 Handle h_prot (THREAD, protection_domain); | |
|
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3379 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
|
3380 false, thread); |
|
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3381 if (TraceClassResolution && result != NULL) { |
|
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3382 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
|
3383 } |
|
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3384 return result; |
| 0 | 3385 JVM_END |
| 3386 | |
| 3387 | |
| 3388 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
| 3389 | |
| 3390 | |
| 3391 // resolve array handle and check arguments | |
| 3392 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
| 3393 if (arr == NULL) { | |
| 3394 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 3395 } | |
| 3396 oop a = JNIHandles::resolve_non_null(arr); | |
| 3397 if (!a->is_javaArray() || (type_array_only && !a->is_typeArray())) { | |
| 3398 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); | |
| 3399 } | |
| 3400 return arrayOop(a); | |
| 3401 } | |
| 3402 | |
| 3403 | |
| 3404 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
| 3405 JVMWrapper("JVM_GetArrayLength"); | |
| 3406 arrayOop a = check_array(env, arr, false, CHECK_0); | |
| 3407 return a->length(); | |
| 3408 JVM_END | |
| 3409 | |
| 3410 | |
| 3411 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
| 3412 JVMWrapper("JVM_Array_Get"); | |
| 3413 JvmtiVMObjectAllocEventCollector oam; | |
| 3414 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
| 3415 jvalue value; | |
| 3416 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
| 3417 oop box = Reflection::box(&value, type, CHECK_NULL); | |
| 3418 return JNIHandles::make_local(env, box); | |
| 3419 JVM_END | |
| 3420 | |
| 3421 | |
| 3422 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
| 3423 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
| 3424 jvalue value; | |
| 3425 value.i = 0; // to initialize value before getting used in CHECK | |
| 3426 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
| 3427 assert(a->is_typeArray(), "just checking"); | |
| 3428 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
| 3429 BasicType wide_type = (BasicType) wCode; | |
| 3430 if (type != wide_type) { | |
| 3431 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
| 3432 } | |
| 3433 return value; | |
| 3434 JVM_END | |
| 3435 | |
| 3436 | |
| 3437 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
| 3438 JVMWrapper("JVM_SetArrayElement"); | |
| 3439 arrayOop a = check_array(env, arr, false, CHECK); | |
| 3440 oop box = JNIHandles::resolve(val); | |
| 3441 jvalue value; | |
| 3442 value.i = 0; // to initialize value before getting used in CHECK | |
| 3443 BasicType value_type; | |
| 3444 if (a->is_objArray()) { | |
| 3445 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
| 3446 value_type = Reflection::unbox_for_regular_object(box, &value); | |
| 3447 } else { | |
| 3448 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
| 3449 } | |
| 3450 Reflection::array_set(&value, a, index, value_type, CHECK); | |
| 3451 JVM_END | |
| 3452 | |
| 3453 | |
| 3454 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
| 3455 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
| 3456 arrayOop a = check_array(env, arr, true, CHECK); | |
| 3457 assert(a->is_typeArray(), "just checking"); | |
| 3458 BasicType value_type = (BasicType) vCode; | |
| 3459 Reflection::array_set(&v, a, index, value_type, CHECK); | |
| 3460 JVM_END | |
| 3461 | |
| 3462 | |
| 3463 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
| 3464 JVMWrapper("JVM_NewArray"); | |
| 3465 JvmtiVMObjectAllocEventCollector oam; | |
| 3466 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3467 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
| 3468 return JNIHandles::make_local(env, result); | |
| 3469 JVM_END | |
| 3470 | |
| 3471 | |
| 3472 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
| 3473 JVMWrapper("JVM_NewMultiArray"); | |
| 3474 JvmtiVMObjectAllocEventCollector oam; | |
| 3475 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
| 3476 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3477 assert(dim_array->is_typeArray(), "just checking"); | |
| 3478 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
| 3479 return JNIHandles::make_local(env, result); | |
| 3480 JVM_END | |
| 3481 | |
| 3482 | |
| 3483 // Networking library support //////////////////////////////////////////////////////////////////// | |
| 3484 | |
| 3485 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
| 3486 JVMWrapper("JVM_InitializeSocketLibrary"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3487 return 0; |
| 0 | 3488 JVM_END |
| 3489 | |
| 3490 | |
| 3491 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
| 3492 JVMWrapper("JVM_Socket"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3493 return os::socket(domain, type, protocol); |
| 0 | 3494 JVM_END |
| 3495 | |
| 3496 | |
| 3497 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
| 3498 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
| 3499 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3500 return os::socket_close(fd); |
| 0 | 3501 JVM_END |
| 3502 | |
| 3503 | |
| 3504 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
| 3505 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
| 3506 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3507 return os::socket_shutdown(fd, howto); |
| 0 | 3508 JVM_END |
| 3509 | |
| 3510 | |
| 3511 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3512 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
| 3513 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3514 return os::recv(fd, buf, (size_t)nBytes, (uint)flags); |
| 0 | 3515 JVM_END |
| 3516 | |
| 3517 | |
| 3518 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3519 JVMWrapper2("JVM_Send (0x%x)", fd); | |
| 3520 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3521 return os::send(fd, buf, (size_t)nBytes, (uint)flags); |
| 0 | 3522 JVM_END |
| 3523 | |
| 3524 | |
| 3525 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
| 3526 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
| 3527 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3528 return os::timeout(fd, timeout); |
| 0 | 3529 JVM_END |
| 3530 | |
| 3531 | |
| 3532 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
| 3533 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
| 3534 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3535 return os::listen(fd, count); |
| 0 | 3536 JVM_END |
| 3537 | |
| 3538 | |
| 3539 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
| 3540 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
| 3541 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3542 return os::connect(fd, him, (socklen_t)len); |
| 0 | 3543 JVM_END |
| 3544 | |
| 3545 | |
| 3546 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
| 3547 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
| 3548 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3549 return os::bind(fd, him, (socklen_t)len); |
| 0 | 3550 JVM_END |
| 3551 | |
| 3552 | |
| 3553 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
| 3554 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
| 3555 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3556 socklen_t socklen = (socklen_t)(*len); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3557 jint result = os::accept(fd, him, &socklen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3558 *len = (jint)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3559 return result; |
| 0 | 3560 JVM_END |
| 3561 | |
| 3562 | |
| 3563 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
| 3564 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
| 3565 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3566 socklen_t socklen = (socklen_t)(*fromlen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3567 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
|
3568 *fromlen = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3569 return result; |
| 0 | 3570 JVM_END |
| 3571 | |
| 3572 | |
| 3573 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
| 3574 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
| 3575 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3576 socklen_t socklen = (socklen_t)(*len); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3577 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
|
3578 *len = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3579 return result; |
| 0 | 3580 JVM_END |
| 3581 | |
| 3582 | |
| 3583 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
| 3584 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
| 3585 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3586 return os::sendto(fd, buf, (size_t)len, (uint)flags, to, (socklen_t)tolen); |
| 0 | 3587 JVM_END |
| 3588 | |
| 3589 | |
| 3590 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
| 3591 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
| 3592 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3593 return os::socket_available(fd, pbytes); |
| 0 | 3594 JVM_END |
| 3595 | |
| 3596 | |
| 3597 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
| 3598 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
| 3599 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3600 socklen_t socklen = (socklen_t)(*optlen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3601 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
|
3602 *optlen = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3603 return result; |
| 0 | 3604 JVM_END |
| 3605 | |
| 3606 | |
| 3607 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
| 3608 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
| 3609 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3610 return os::set_sock_opt(fd, level, optname, optval, (socklen_t)optlen); |
| 0 | 3611 JVM_END |
| 3612 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3613 |
| 0 | 3614 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) |
| 3615 JVMWrapper("JVM_GetHostName"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3616 return os::get_host_name(name, namelen); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3617 JVM_END |
| 0 | 3618 |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3619 |
| 0 | 3620 // Library support /////////////////////////////////////////////////////////////////////////// |
| 3621 | |
| 3622 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
| 3623 //%note jvm_ct | |
| 3624 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
| 3625 char ebuf[1024]; | |
| 3626 void *load_result; | |
| 3627 { | |
| 3628 ThreadToNativeFromVM ttnfvm(thread); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3629 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
| 0 | 3630 } |
| 3631 if (load_result == NULL) { | |
| 3632 char msg[1024]; | |
| 3633 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
| 3634 // Since 'ebuf' may contain a string encoded using | |
| 3635 // platform encoding scheme, we need to pass | |
| 3636 // Exceptions::unsafe_to_utf8 to the new_exception method | |
| 3637 // as the last argument. See bug 6367357. | |
| 3638 Handle h_exception = | |
| 3639 Exceptions::new_exception(thread, | |
| 3640 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
| 3641 msg, Exceptions::unsafe_to_utf8); | |
| 3642 | |
| 3643 THROW_HANDLE_0(h_exception); | |
| 3644 } | |
| 3645 return load_result; | |
| 3646 JVM_END | |
| 3647 | |
| 3648 | |
| 3649 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
| 3650 JVMWrapper("JVM_UnloadLibrary"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3651 os::dll_unload(handle); |
| 0 | 3652 JVM_END |
| 3653 | |
| 3654 | |
| 3655 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
| 3656 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3657 return os::dll_lookup(handle, name); |
| 0 | 3658 JVM_END |
| 3659 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3660 |
| 0 | 3661 // Floating point support //////////////////////////////////////////////////////////////////// |
| 3662 | |
| 3663 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
| 3664 JVMWrapper("JVM_IsNaN"); | |
| 3665 return g_isnan(a); | |
| 3666 JVM_END | |
| 3667 | |
| 3668 | |
| 3669 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
| 3670 | |
| 3671 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
| 3672 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
| 3673 return Threads::is_supported_jni_version_including_1_1(version); | |
| 3674 JVM_END | |
| 3675 | |
| 3676 | |
| 3677 // String support /////////////////////////////////////////////////////////////////////////// | |
| 3678 | |
| 3679 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
| 3680 JVMWrapper("JVM_InternString"); | |
| 3681 JvmtiVMObjectAllocEventCollector oam; | |
| 3682 if (str == NULL) return NULL; | |
| 3683 oop string = JNIHandles::resolve_non_null(str); | |
| 3684 oop result = StringTable::intern(string, CHECK_NULL); | |
| 3685 return (jstring) JNIHandles::make_local(env, result); | |
| 3686 JVM_END | |
| 3687 | |
| 3688 | |
| 3689 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
| 3690 | |
| 3691 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
| 3692 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
| 3693 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
| 3694 // that only works with java threads. | |
| 3695 | |
| 3696 | |
| 3697 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
| 3698 VM_Exit::block_if_vm_exited(); | |
| 3699 JVMWrapper("JVM_RawMonitorCreate"); | |
| 3700 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
| 3701 } | |
| 3702 | |
| 3703 | |
| 3704 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
| 3705 VM_Exit::block_if_vm_exited(); | |
| 3706 JVMWrapper("JVM_RawMonitorDestroy"); | |
| 3707 delete ((Mutex*) mon); | |
| 3708 } | |
| 3709 | |
| 3710 | |
| 3711 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
| 3712 VM_Exit::block_if_vm_exited(); | |
| 3713 JVMWrapper("JVM_RawMonitorEnter"); | |
| 3714 ((Mutex*) mon)->jvm_raw_lock(); | |
| 3715 return 0; | |
| 3716 } | |
| 3717 | |
| 3718 | |
| 3719 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
| 3720 VM_Exit::block_if_vm_exited(); | |
| 3721 JVMWrapper("JVM_RawMonitorExit"); | |
| 3722 ((Mutex*) mon)->jvm_raw_unlock(); | |
| 3723 } | |
| 3724 | |
| 3725 | |
| 3726 // Support for Serialization | |
| 3727 | |
| 3728 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
| 3729 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
| 3730 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
| 3731 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
| 3732 | |
| 3733 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
| 3734 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
| 3735 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
| 3736 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
| 3737 | |
| 3738 | |
| 3739 void initialize_converter_functions() { | |
| 3740 if (JDK_Version::is_gte_jdk14x_version()) { | |
| 3741 // These functions only exist for compatibility with 1.3.1 and earlier | |
| 3742 return; | |
| 3743 } | |
| 3744 | |
| 3745 // called from universe_post_init() | |
| 3746 assert( | |
| 3747 int_bits_to_float_fn == NULL && | |
| 3748 long_bits_to_double_fn == NULL && | |
| 3749 float_to_int_bits_fn == NULL && | |
| 3750 double_to_long_bits_fn == NULL , | |
| 3751 "initialization done twice" | |
| 3752 ); | |
| 3753 // initialize | |
| 3754 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
| 3755 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
| 3756 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
| 3757 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
| 3758 // verify | |
| 3759 assert( | |
| 3760 int_bits_to_float_fn != NULL && | |
| 3761 long_bits_to_double_fn != NULL && | |
| 3762 float_to_int_bits_fn != NULL && | |
| 3763 double_to_long_bits_fn != NULL , | |
| 3764 "initialization failed" | |
| 3765 ); | |
| 3766 } | |
| 3767 | |
| 3768 | |
| 3769 // Serialization | |
| 3770 JVM_ENTRY(void, JVM_SetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
| 3771 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
| 3772 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
| 3773 | |
| 3774 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
| 3775 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
| 3776 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
| 3777 oop o = JNIHandles::resolve(obj); | |
| 3778 | |
| 3779 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
| 3780 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 3781 } | |
| 3782 | |
| 3783 jsize nfids = fids->length(); | |
| 3784 if (nfids == 0) return; | |
| 3785 | |
| 3786 if (tcodes->length() < nfids) { | |
| 3787 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
| 3788 } | |
| 3789 | |
| 3790 jsize off = 0; | |
| 3791 /* loop through fields, setting values */ | |
| 3792 for (jsize i = 0; i < nfids; i++) { | |
| 3793 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
| 3794 int field_offset; | |
| 3795 if (fid != NULL) { | |
| 3796 // NULL is a legal value for fid, but retrieving the field offset | |
| 3797 // trigger assertion in that case | |
| 3798 field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 3799 } | |
| 3800 | |
| 3801 switch (tcodes->char_at(i)) { | |
| 3802 case 'Z': | |
| 3803 if (fid != NULL) { | |
| 3804 jboolean val = (dbuf->byte_at(off) != 0) ? JNI_TRUE : JNI_FALSE; | |
| 3805 o->bool_field_put(field_offset, val); | |
| 3806 } | |
| 3807 off++; | |
| 3808 break; | |
| 3809 | |
| 3810 case 'B': | |
| 3811 if (fid != NULL) { | |
| 3812 o->byte_field_put(field_offset, dbuf->byte_at(off)); | |
| 3813 } | |
| 3814 off++; | |
| 3815 break; | |
| 3816 | |
| 3817 case 'C': | |
| 3818 if (fid != NULL) { | |
| 3819 jchar val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
| 3820 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
| 3821 o->char_field_put(field_offset, val); | |
| 3822 } | |
| 3823 off += 2; | |
| 3824 break; | |
| 3825 | |
| 3826 case 'S': | |
| 3827 if (fid != NULL) { | |
| 3828 jshort val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
| 3829 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
| 3830 o->short_field_put(field_offset, val); | |
| 3831 } | |
| 3832 off += 2; | |
| 3833 break; | |
| 3834 | |
| 3835 case 'I': | |
| 3836 if (fid != NULL) { | |
| 3837 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
| 3838 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
| 3839 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
| 3840 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
| 3841 o->int_field_put(field_offset, ival); | |
| 3842 } | |
| 3843 off += 4; | |
| 3844 break; | |
| 3845 | |
| 3846 case 'F': | |
| 3847 if (fid != NULL) { | |
| 3848 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
| 3849 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
| 3850 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
| 3851 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
| 3852 jfloat fval = (*int_bits_to_float_fn)(env, NULL, ival); | |
| 3853 o->float_field_put(field_offset, fval); | |
| 3854 } | |
| 3855 off += 4; | |
| 3856 break; | |
| 3857 | |
| 3858 case 'J': | |
| 3859 if (fid != NULL) { | |
| 3860 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
| 3861 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
| 3862 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
| 3863 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
| 3864 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
| 3865 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
| 3866 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
| 3867 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
| 3868 o->long_field_put(field_offset, lval); | |
| 3869 } | |
| 3870 off += 8; | |
| 3871 break; | |
| 3872 | |
| 3873 case 'D': | |
| 3874 if (fid != NULL) { | |
| 3875 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
| 3876 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
| 3877 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
| 3878 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
| 3879 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
| 3880 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
| 3881 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
| 3882 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
| 3883 jdouble dval = (*long_bits_to_double_fn)(env, NULL, lval); | |
| 3884 o->double_field_put(field_offset, dval); | |
| 3885 } | |
| 3886 off += 8; | |
| 3887 break; | |
| 3888 | |
| 3889 default: | |
| 3890 // Illegal typecode | |
| 3891 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
| 3892 } | |
| 3893 } | |
| 3894 JVM_END | |
| 3895 | |
| 3896 | |
| 3897 JVM_ENTRY(void, JVM_GetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
| 3898 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
| 3899 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
| 3900 | |
| 3901 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
| 3902 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
| 3903 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
| 3904 oop o = JNIHandles::resolve(obj); | |
| 3905 | |
| 3906 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
| 3907 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 3908 } | |
| 3909 | |
| 3910 jsize nfids = fids->length(); | |
| 3911 if (nfids == 0) return; | |
| 3912 | |
| 3913 if (tcodes->length() < nfids) { | |
| 3914 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
| 3915 } | |
| 3916 | |
| 3917 /* loop through fields, fetching values */ | |
| 3918 jsize off = 0; | |
| 3919 for (jsize i = 0; i < nfids; i++) { | |
| 3920 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
| 3921 if (fid == NULL) { | |
| 3922 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 3923 } | |
| 3924 int field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 3925 | |
| 3926 switch (tcodes->char_at(i)) { | |
| 3927 case 'Z': | |
| 3928 { | |
| 3929 jboolean val = o->bool_field(field_offset); | |
| 3930 dbuf->byte_at_put(off++, (val != 0) ? 1 : 0); | |
| 3931 } | |
| 3932 break; | |
| 3933 | |
| 3934 case 'B': | |
| 3935 dbuf->byte_at_put(off++, o->byte_field(field_offset)); | |
| 3936 break; | |
| 3937 | |
| 3938 case 'C': | |
| 3939 { | |
| 3940 jchar val = o->char_field(field_offset); | |
| 3941 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 3942 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 3943 } | |
| 3944 break; | |
| 3945 | |
| 3946 case 'S': | |
| 3947 { | |
| 3948 jshort val = o->short_field(field_offset); | |
| 3949 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 3950 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 3951 } | |
| 3952 break; | |
| 3953 | |
| 3954 case 'I': | |
| 3955 { | |
| 3956 jint val = o->int_field(field_offset); | |
| 3957 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
| 3958 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
| 3959 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 3960 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 3961 } | |
| 3962 break; | |
| 3963 | |
| 3964 case 'F': | |
| 3965 { | |
| 3966 jfloat fval = o->float_field(field_offset); | |
| 3967 jint ival = (*float_to_int_bits_fn)(env, NULL, fval); | |
| 3968 dbuf->byte_at_put(off++, (ival >> 24) & 0xFF); | |
| 3969 dbuf->byte_at_put(off++, (ival >> 16) & 0xFF); | |
| 3970 dbuf->byte_at_put(off++, (ival >> 8) & 0xFF); | |
| 3971 dbuf->byte_at_put(off++, (ival >> 0) & 0xFF); | |
| 3972 } | |
| 3973 break; | |
| 3974 | |
| 3975 case 'J': | |
| 3976 { | |
| 3977 jlong val = o->long_field(field_offset); | |
| 3978 dbuf->byte_at_put(off++, (val >> 56) & 0xFF); | |
| 3979 dbuf->byte_at_put(off++, (val >> 48) & 0xFF); | |
| 3980 dbuf->byte_at_put(off++, (val >> 40) & 0xFF); | |
| 3981 dbuf->byte_at_put(off++, (val >> 32) & 0xFF); | |
| 3982 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
| 3983 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
| 3984 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 3985 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 3986 } | |
| 3987 break; | |
| 3988 | |
| 3989 case 'D': | |
| 3990 { | |
| 3991 jdouble dval = o->double_field(field_offset); | |
| 3992 jlong lval = (*double_to_long_bits_fn)(env, NULL, dval); | |
| 3993 dbuf->byte_at_put(off++, (lval >> 56) & 0xFF); | |
| 3994 dbuf->byte_at_put(off++, (lval >> 48) & 0xFF); | |
| 3995 dbuf->byte_at_put(off++, (lval >> 40) & 0xFF); | |
| 3996 dbuf->byte_at_put(off++, (lval >> 32) & 0xFF); | |
| 3997 dbuf->byte_at_put(off++, (lval >> 24) & 0xFF); | |
| 3998 dbuf->byte_at_put(off++, (lval >> 16) & 0xFF); | |
| 3999 dbuf->byte_at_put(off++, (lval >> 8) & 0xFF); | |
| 4000 dbuf->byte_at_put(off++, (lval >> 0) & 0xFF); | |
| 4001 } | |
| 4002 break; | |
| 4003 | |
| 4004 default: | |
| 4005 // Illegal typecode | |
| 4006 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
| 4007 } | |
| 4008 } | |
| 4009 JVM_END | |
| 4010 | |
| 4011 | |
| 4012 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
| 4013 | |
|
2177
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|
4014 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS) { |
| 0 | 4015 // Security Note: |
| 4016 // The Java level wrapper will perform the necessary security check allowing | |
| 4017 // us to pass the NULL as the initiating class loader. | |
| 4018 klassOop klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); | |
|
878
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875
diff
changeset
|
4019 |
| 0 | 4020 KlassHandle klass_handle(THREAD, klass); |
| 4021 // Check if we should initialize the class | |
| 4022 if (init && klass_handle->oop_is_instance()) { | |
| 4023 klass_handle->initialize(CHECK_NULL); | |
| 4024 } | |
| 4025 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
| 4026 } | |
| 4027 | |
| 4028 | |
| 4029 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
| 4030 | |
| 4031 #ifndef PRODUCT | |
| 4032 | |
| 4033 extern "C" { | |
| 4034 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
| 4035 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
| 4036 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
| 4037 } | |
| 4038 | |
| 4039 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
| 4040 JVMWrapper("JVM_AccessBoolVMFlag"); | |
| 4041 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, INTERNAL); | |
| 4042 JVM_END | |
| 4043 | |
| 4044 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
| 4045 JVMWrapper("JVM_AccessVMIntFlag"); | |
| 4046 intx v; | |
| 4047 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, INTERNAL); | |
| 4048 *value = (jint)v; | |
| 4049 return result; | |
| 4050 JVM_END | |
| 4051 | |
| 4052 | |
| 4053 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
| 4054 JVMWrapper("JVM_VMBreakPoint"); | |
| 4055 oop the_obj = JNIHandles::resolve(obj); | |
| 4056 BREAKPOINT; | |
| 4057 JVM_END | |
| 4058 | |
| 4059 | |
| 4060 #endif | |
| 4061 | |
| 4062 | |
| 4063 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4064 | |
| 4065 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
| 4066 JVMWrapper("JVM_InvokeMethod"); | |
| 4067 Handle method_handle; | |
| 4068 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
| 4069 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
| 4070 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
| 4071 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4072 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
| 4073 jobject res = JNIHandles::make_local(env, result); | |
| 4074 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4075 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
| 4076 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
| 4077 if (java_lang_Class::is_primitive(ret_type)) { | |
| 4078 // Only for primitive type vm allocates memory for java object. | |
| 4079 // See box() method. | |
| 4080 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4081 } | |
| 4082 } | |
| 4083 return res; | |
| 4084 } else { | |
| 4085 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
| 4086 } | |
| 4087 JVM_END | |
| 4088 | |
| 4089 | |
| 4090 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
| 4091 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
| 4092 oop constructor_mirror = JNIHandles::resolve(c); | |
| 4093 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4094 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
| 4095 jobject res = JNIHandles::make_local(env, result); | |
| 4096 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4097 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4098 } | |
| 4099 return res; | |
| 4100 JVM_END | |
| 4101 | |
| 4102 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4103 | |
| 4104 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
| 4105 JVMWrapper("JVM_SupportsCX8"); | |
| 4106 return VM_Version::supports_cx8(); | |
| 4107 JVM_END | |
| 4108 | |
| 4109 | |
| 4110 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
| 4111 JVMWrapper("JVM_CX8Field"); | |
| 4112 jlong res; | |
| 4113 oop o = JNIHandles::resolve(obj); | |
| 4114 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 4115 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
| 4116 | |
| 4117 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
| 4118 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
| 4119 | |
| 4120 return res == oldVal; | |
| 4121 JVM_END | |
| 4122 | |
|
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|
4123 // DTrace /////////////////////////////////////////////////////////////////// |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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0
diff
changeset
|
4124 |
|
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0
diff
changeset
|
4125 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
|
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4126 JVMWrapper("JVM_DTraceGetVersion"); |
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4127 return (jint)JVM_TRACING_DTRACE_VERSION; |
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4128 JVM_END |
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4129 |
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4130 JVM_ENTRY(jlong,JVM_DTraceActivate( |
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4131 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
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4132 JVM_DTraceProvider* providers)) |
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4133 JVMWrapper("JVM_DTraceActivate"); |
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4134 return DTraceJSDT::activate( |
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4135 version, module_name, providers_count, providers, CHECK_0); |
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4136 JVM_END |
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4137 |
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4138 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
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4139 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
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4140 return DTraceJSDT::is_probe_enabled(method); |
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4141 JVM_END |
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4142 |
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4143 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
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4144 JVMWrapper("JVM_DTraceDispose"); |
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4145 DTraceJSDT::dispose(handle); |
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4146 JVM_END |
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4147 |
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4148 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
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4149 JVMWrapper("JVM_DTraceIsSupported"); |
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4150 return DTraceJSDT::is_supported(); |
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4151 JVM_END |
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4152 |
| 0 | 4153 // Returns an array of all live Thread objects (VM internal JavaThreads, |
| 4154 // jvmti agent threads, and JNI attaching threads are skipped) | |
| 4155 // See CR 6404306 regarding JNI attaching threads | |
| 4156 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
| 4157 ResourceMark rm(THREAD); | |
| 4158 ThreadsListEnumerator tle(THREAD, false, false); | |
| 4159 JvmtiVMObjectAllocEventCollector oam; | |
| 4160 | |
| 4161 int num_threads = tle.num_threads(); | |
| 1142 | 4162 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
| 0 | 4163 objArrayHandle threads_ah(THREAD, r); |
| 4164 | |
| 4165 for (int i = 0; i < num_threads; i++) { | |
| 4166 Handle h = tle.get_threadObj(i); | |
| 4167 threads_ah->obj_at_put(i, h()); | |
| 4168 } | |
| 4169 | |
| 4170 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
| 4171 JVM_END | |
| 4172 | |
| 4173 | |
| 4174 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
| 4175 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
| 4176 // the corresponding entry in the given threads array | |
| 4177 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
| 4178 JVMWrapper("JVM_DumpThreads"); | |
| 4179 JvmtiVMObjectAllocEventCollector oam; | |
| 4180 | |
| 4181 // Check if threads is null | |
| 4182 if (threads == NULL) { | |
| 4183 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4184 } | |
| 4185 | |
| 4186 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
| 4187 objArrayHandle ah(THREAD, a); | |
| 4188 int num_threads = ah->length(); | |
| 4189 // check if threads is non-empty array | |
| 4190 if (num_threads == 0) { | |
| 4191 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
| 4192 } | |
| 4193 | |
| 4194 // check if threads is not an array of objects of Thread class | |
| 4195 klassOop k = objArrayKlass::cast(ah->klass())->element_klass(); | |
| 1142 | 4196 if (k != SystemDictionary::Thread_klass()) { |
| 0 | 4197 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
| 4198 } | |
| 4199 | |
| 4200 ResourceMark rm(THREAD); | |
| 4201 | |
| 4202 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
| 4203 for (int i = 0; i < num_threads; i++) { | |
| 4204 oop thread_obj = ah->obj_at(i); | |
| 4205 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
| 4206 thread_handle_array->append(h); | |
| 4207 } | |
| 4208 | |
| 4209 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
| 4210 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
| 4211 | |
| 4212 JVM_END | |
| 4213 | |
| 4214 // JVM monitoring and management support | |
| 4215 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
| 4216 return Management::get_jmm_interface(version); | |
| 4217 JVM_END | |
| 4218 | |
| 4219 // com.sun.tools.attach.VirtualMachine agent properties support | |
| 4220 // | |
| 4221 // Initialize the agent properties with the properties maintained in the VM | |
| 4222 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
| 4223 JVMWrapper("JVM_InitAgentProperties"); | |
| 4224 ResourceMark rm; | |
| 4225 | |
| 4226 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
| 4227 | |
| 4228 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
| 4229 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
| 4230 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
| 4231 return properties; | |
| 4232 JVM_END | |
| 4233 | |
| 4234 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
| 4235 { | |
| 4236 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
| 4237 JvmtiVMObjectAllocEventCollector oam; | |
| 4238 | |
| 4239 if (ofClass == NULL) { | |
| 4240 return NULL; | |
| 4241 } | |
| 4242 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
| 4243 // Special handling for primitive objects | |
| 4244 if (java_lang_Class::is_primitive(mirror())) { | |
| 4245 return NULL; | |
| 4246 } | |
| 4247 klassOop k = java_lang_Class::as_klassOop(mirror()); | |
| 4248 if (!Klass::cast(k)->oop_is_instance()) { | |
| 4249 return NULL; | |
| 4250 } | |
| 4251 instanceKlassHandle ik_h(THREAD, k); | |
| 4252 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
| 4253 if (encl_method_class_idx == 0) { | |
| 4254 return NULL; | |
| 4255 } | |
| 1142 | 4256 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
| 0 | 4257 objArrayHandle dest(THREAD, dest_o); |
| 4258 klassOop enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); | |
| 4259 dest->obj_at_put(0, Klass::cast(enc_k)->java_mirror()); | |
| 4260 int encl_method_method_idx = ik_h->enclosing_method_method_index(); | |
| 4261 if (encl_method_method_idx != 0) { | |
|
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|
4262 Symbol* sym = ik_h->constants()->symbol_at( |
| 0 | 4263 extract_low_short_from_int( |
| 4264 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4265 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4266 dest->obj_at_put(1, str()); | |
|
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|
4267 sym = ik_h->constants()->symbol_at( |
| 0 | 4268 extract_high_short_from_int( |
| 4269 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4270 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4271 dest->obj_at_put(2, str()); | |
| 4272 } | |
| 4273 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 4274 } | |
| 4275 JVM_END | |
| 4276 | |
| 4277 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
| 4278 jint javaThreadState)) | |
| 4279 { | |
| 4280 // If new thread states are added in future JDK and VM versions, | |
| 4281 // this should check if the JDK version is compatible with thread | |
| 4282 // states supported by the VM. Return NULL if not compatible. | |
| 4283 // | |
| 4284 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4285 // to the Java thread state that the JDK supports. | |
| 4286 // | |
| 4287 | |
| 4288 typeArrayHandle values_h; | |
| 4289 switch (javaThreadState) { | |
| 4290 case JAVA_THREAD_STATE_NEW : { | |
| 4291 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4292 values_h = typeArrayHandle(THREAD, r); | |
| 4293 values_h->int_at_put(0, java_lang_Thread::NEW); | |
| 4294 break; | |
| 4295 } | |
| 4296 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4297 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4298 values_h = typeArrayHandle(THREAD, r); | |
| 4299 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
| 4300 break; | |
| 4301 } | |
| 4302 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4303 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4304 values_h = typeArrayHandle(THREAD, r); | |
| 4305 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
| 4306 break; | |
| 4307 } | |
| 4308 case JAVA_THREAD_STATE_WAITING : { | |
| 4309 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
| 4310 values_h = typeArrayHandle(THREAD, r); | |
| 4311 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
| 4312 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
| 4313 break; | |
| 4314 } | |
| 4315 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4316 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
| 4317 values_h = typeArrayHandle(THREAD, r); | |
| 4318 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
| 4319 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
| 4320 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
| 4321 break; | |
| 4322 } | |
| 4323 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4324 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4325 values_h = typeArrayHandle(THREAD, r); | |
| 4326 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
| 4327 break; | |
| 4328 } | |
| 4329 default: | |
| 4330 // Unknown state - probably incompatible JDK version | |
| 4331 return NULL; | |
| 4332 } | |
| 4333 | |
| 4334 return (jintArray) JNIHandles::make_local(env, values_h()); | |
| 4335 } | |
| 4336 JVM_END | |
| 4337 | |
| 4338 | |
| 4339 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
| 4340 jint javaThreadState, | |
| 4341 jintArray values)) | |
| 4342 { | |
| 4343 // If new thread states are added in future JDK and VM versions, | |
| 4344 // this should check if the JDK version is compatible with thread | |
| 4345 // states supported by the VM. Return NULL if not compatible. | |
| 4346 // | |
| 4347 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4348 // to the Java thread state that the JDK supports. | |
| 4349 // | |
| 4350 | |
| 4351 ResourceMark rm; | |
| 4352 | |
| 4353 // Check if threads is null | |
| 4354 if (values == NULL) { | |
| 4355 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4356 } | |
| 4357 | |
| 4358 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
| 4359 typeArrayHandle values_h(THREAD, v); | |
| 4360 | |
| 4361 objArrayHandle names_h; | |
| 4362 switch (javaThreadState) { | |
| 4363 case JAVA_THREAD_STATE_NEW : { | |
| 4364 assert(values_h->length() == 1 && | |
| 4365 values_h->int_at(0) == java_lang_Thread::NEW, | |
| 4366 "Invalid threadStatus value"); | |
| 4367 | |
| 1142 | 4368 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4369 1, /* only 1 substate */ |
| 4370 CHECK_NULL); | |
| 4371 names_h = objArrayHandle(THREAD, r); | |
| 4372 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
| 4373 names_h->obj_at_put(0, name()); | |
| 4374 break; | |
| 4375 } | |
| 4376 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4377 assert(values_h->length() == 1 && | |
| 4378 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
| 4379 "Invalid threadStatus value"); | |
| 4380 | |
| 1142 | 4381 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4382 1, /* only 1 substate */ |
| 4383 CHECK_NULL); | |
| 4384 names_h = objArrayHandle(THREAD, r); | |
| 4385 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
| 4386 names_h->obj_at_put(0, name()); | |
| 4387 break; | |
| 4388 } | |
| 4389 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4390 assert(values_h->length() == 1 && | |
| 4391 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
| 4392 "Invalid threadStatus value"); | |
| 4393 | |
| 1142 | 4394 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4395 1, /* only 1 substate */ |
| 4396 CHECK_NULL); | |
| 4397 names_h = objArrayHandle(THREAD, r); | |
| 4398 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
| 4399 names_h->obj_at_put(0, name()); | |
| 4400 break; | |
| 4401 } | |
| 4402 case JAVA_THREAD_STATE_WAITING : { | |
| 4403 assert(values_h->length() == 2 && | |
| 4404 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
| 4405 values_h->int_at(1) == java_lang_Thread::PARKED, | |
| 4406 "Invalid threadStatus value"); | |
| 1142 | 4407 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4408 2, /* number of substates */ |
| 4409 CHECK_NULL); | |
| 4410 names_h = objArrayHandle(THREAD, r); | |
| 4411 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
| 4412 CHECK_NULL); | |
| 4413 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
| 4414 CHECK_NULL); | |
| 4415 names_h->obj_at_put(0, name0()); | |
| 4416 names_h->obj_at_put(1, name1()); | |
| 4417 break; | |
| 4418 } | |
| 4419 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4420 assert(values_h->length() == 3 && | |
| 4421 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
| 4422 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
| 4423 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
| 4424 "Invalid threadStatus value"); | |
| 1142 | 4425 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4426 3, /* number of substates */ |
| 4427 CHECK_NULL); | |
| 4428 names_h = objArrayHandle(THREAD, r); | |
| 4429 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
| 4430 CHECK_NULL); | |
| 4431 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
| 4432 CHECK_NULL); | |
| 4433 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
| 4434 CHECK_NULL); | |
| 4435 names_h->obj_at_put(0, name0()); | |
| 4436 names_h->obj_at_put(1, name1()); | |
| 4437 names_h->obj_at_put(2, name2()); | |
| 4438 break; | |
| 4439 } | |
| 4440 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4441 assert(values_h->length() == 1 && | |
| 4442 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
| 4443 "Invalid threadStatus value"); | |
| 1142 | 4444 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4445 1, /* only 1 substate */ |
| 4446 CHECK_NULL); | |
| 4447 names_h = objArrayHandle(THREAD, r); | |
| 4448 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
| 4449 names_h->obj_at_put(0, name()); | |
| 4450 break; | |
| 4451 } | |
| 4452 default: | |
| 4453 // Unknown state - probably incompatible JDK version | |
| 4454 return NULL; | |
| 4455 } | |
| 4456 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
| 4457 } | |
| 4458 JVM_END | |
| 4459 | |
| 4460 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
| 4461 { | |
| 4462 memset(info, 0, sizeof(info_size)); | |
| 4463 | |
| 4464 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
| 4465 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4466 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4467 | |
| 4468 // when we add a new capability in the jvm_version_info struct, we should also | |
| 4469 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
| 4470 // counter defined in runtimeService.cpp. | |
| 4471 info->is_attachable = AttachListener::is_attach_supported(); | |
| 4472 #ifdef KERNEL | |
| 4473 info->is_kernel_jvm = 1; // true; | |
| 4474 #else // KERNEL | |
| 4475 info->is_kernel_jvm = 0; // false; | |
| 4476 #endif // KERNEL | |
| 4477 } | |
| 4478 JVM_END |