Mercurial > hg > truffle
annotate src/share/vm/prims/jvm.cpp @ 13086:096c224171c4
Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/
| author | Doug Simon <doug.simon@oracle.com> |
|---|---|
| date | Wed, 20 Nov 2013 00:10:38 +0100 |
| parents | cefad50507d8 615d83933195 |
| children | d8041d695d19 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "classfile/classLoader.hpp" | |
| 27 #include "classfile/javaAssertions.hpp" | |
| 28 #include "classfile/javaClasses.hpp" | |
| 29 #include "classfile/symbolTable.hpp" | |
| 30 #include "classfile/systemDictionary.hpp" | |
| 31 #include "classfile/vmSymbols.hpp" | |
| 32 #include "gc_interface/collectedHeap.inline.hpp" | |
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33 #include "interpreter/bytecode.hpp" |
| 1972 | 34 #include "memory/oopFactory.hpp" |
| 35 #include "memory/universe.inline.hpp" | |
| 3938 | 36 #include "oops/fieldStreams.hpp" |
| 1972 | 37 #include "oops/instanceKlass.hpp" |
| 38 #include "oops/objArrayKlass.hpp" | |
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39 #include "oops/method.hpp" |
| 1972 | 40 #include "prims/jvm.h" |
| 41 #include "prims/jvm_misc.hpp" | |
| 42 #include "prims/jvmtiExport.hpp" | |
| 43 #include "prims/jvmtiThreadState.hpp" | |
| 44 #include "prims/nativeLookup.hpp" | |
| 45 #include "prims/privilegedStack.hpp" | |
| 46 #include "runtime/arguments.hpp" | |
| 47 #include "runtime/dtraceJSDT.hpp" | |
| 48 #include "runtime/handles.inline.hpp" | |
| 49 #include "runtime/init.hpp" | |
| 50 #include "runtime/interfaceSupport.hpp" | |
| 51 #include "runtime/java.hpp" | |
| 52 #include "runtime/javaCalls.hpp" | |
| 53 #include "runtime/jfieldIDWorkaround.hpp" | |
| 54 #include "runtime/os.hpp" | |
| 55 #include "runtime/perfData.hpp" | |
| 56 #include "runtime/reflection.hpp" | |
| 57 #include "runtime/vframe.hpp" | |
| 58 #include "runtime/vm_operations.hpp" | |
| 59 #include "services/attachListener.hpp" | |
| 60 #include "services/management.hpp" | |
| 61 #include "services/threadService.hpp" | |
| 10405 | 62 #include "trace/tracing.hpp" |
| 1972 | 63 #include "utilities/copy.hpp" |
| 64 #include "utilities/defaultStream.hpp" | |
| 65 #include "utilities/dtrace.hpp" | |
| 66 #include "utilities/events.hpp" | |
| 67 #include "utilities/histogram.hpp" | |
| 68 #include "utilities/top.hpp" | |
| 69 #include "utilities/utf8.hpp" | |
| 70 #ifdef TARGET_OS_FAMILY_linux | |
| 71 # include "jvm_linux.h" | |
| 72 #endif | |
| 73 #ifdef TARGET_OS_FAMILY_solaris | |
| 74 # include "jvm_solaris.h" | |
| 75 #endif | |
| 76 #ifdef TARGET_OS_FAMILY_windows | |
| 77 # include "jvm_windows.h" | |
| 78 #endif | |
| 3960 | 79 #ifdef TARGET_OS_FAMILY_bsd |
| 80 # include "jvm_bsd.h" | |
| 81 #endif | |
| 1972 | 82 |
| 0 | 83 #include <errno.h> |
| 84 | |
| 4006 | 85 #ifndef USDT2 |
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86 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__begin, long long); |
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87 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__end, int); |
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88 HS_DTRACE_PROBE_DECL0(hotspot, thread__yield); |
| 4006 | 89 #endif /* !USDT2 */ |
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90 |
| 0 | 91 /* |
| 92 NOTE about use of any ctor or function call that can trigger a safepoint/GC: | |
| 93 such ctors and calls MUST NOT come between an oop declaration/init and its | |
| 94 usage because if objects are move this may cause various memory stomps, bus | |
| 95 errors and segfaults. Here is a cookbook for causing so called "naked oop | |
| 96 failures": | |
| 97 | |
| 98 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> { | |
| 99 JVMWrapper("JVM_GetClassDeclaredFields"); | |
| 100 | |
| 101 // Object address to be held directly in mirror & not visible to GC | |
| 102 oop mirror = JNIHandles::resolve_non_null(ofClass); | |
| 103 | |
| 104 // If this ctor can hit a safepoint, moving objects around, then | |
| 105 ComplexConstructor foo; | |
| 106 | |
| 107 // Boom! mirror may point to JUNK instead of the intended object | |
| 108 (some dereference of mirror) | |
| 109 | |
| 110 // Here's another call that may block for GC, making mirror stale | |
| 111 MutexLocker ml(some_lock); | |
| 112 | |
| 113 // And here's an initializer that can result in a stale oop | |
| 114 // all in one step. | |
| 115 oop o = call_that_can_throw_exception(TRAPS); | |
| 116 | |
| 117 | |
| 118 The solution is to keep the oop declaration BELOW the ctor or function | |
| 119 call that might cause a GC, do another resolve to reassign the oop, or | |
| 120 consider use of a Handle instead of an oop so there is immunity from object | |
| 121 motion. But note that the "QUICK" entries below do not have a handlemark | |
| 122 and thus can only support use of handles passed in. | |
| 123 */ | |
| 124 | |
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125 static void trace_class_resolution_impl(Klass* to_class, TRAPS) { |
| 0 | 126 ResourceMark rm; |
| 127 int line_number = -1; | |
| 128 const char * source_file = NULL; | |
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129 const char * trace = "explicit"; |
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130 InstanceKlass* caller = NULL; |
| 0 | 131 JavaThread* jthread = JavaThread::current(); |
| 132 if (jthread->has_last_Java_frame()) { | |
| 133 vframeStream vfst(jthread); | |
| 134 | |
| 135 // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames | |
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136 TempNewSymbol access_controller = SymbolTable::new_symbol("java/security/AccessController", CHECK); |
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137 Klass* access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); |
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138 TempNewSymbol privileged_action = SymbolTable::new_symbol("java/security/PrivilegedAction", CHECK); |
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139 Klass* privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); |
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140 |
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141 Method* last_caller = NULL; |
| 0 | 142 |
| 143 while (!vfst.at_end()) { | |
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144 Method* m = vfst.method(); |
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145 if (!vfst.method()->method_holder()->is_subclass_of(SystemDictionary::ClassLoader_klass())&& |
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146 !vfst.method()->method_holder()->is_subclass_of(access_controller_klass) && |
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147 !vfst.method()->method_holder()->is_subclass_of(privileged_action_klass)) { |
| 0 | 148 break; |
| 149 } | |
| 150 last_caller = m; | |
| 151 vfst.next(); | |
| 152 } | |
| 153 // if this is called from Class.forName0 and that is called from Class.forName, | |
| 154 // then print the caller of Class.forName. If this is Class.loadClass, then print | |
| 155 // that caller, otherwise keep quiet since this should be picked up elsewhere. | |
| 156 bool found_it = false; | |
| 157 if (!vfst.at_end() && | |
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158 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
| 0 | 159 vfst.method()->name() == vmSymbols::forName0_name()) { |
| 160 vfst.next(); | |
| 161 if (!vfst.at_end() && | |
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162 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
| 0 | 163 vfst.method()->name() == vmSymbols::forName_name()) { |
| 164 vfst.next(); | |
| 165 found_it = true; | |
| 166 } | |
| 167 } else if (last_caller != NULL && | |
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168 last_caller->method_holder()->name() == |
| 0 | 169 vmSymbols::java_lang_ClassLoader() && |
| 170 (last_caller->name() == vmSymbols::loadClassInternal_name() || | |
| 171 last_caller->name() == vmSymbols::loadClass_name())) { | |
| 172 found_it = true; | |
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173 } else if (!vfst.at_end()) { |
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174 if (vfst.method()->is_native()) { |
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175 // JNI call |
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176 found_it = true; |
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177 } |
| 0 | 178 } |
| 179 if (found_it && !vfst.at_end()) { | |
| 180 // found the caller | |
| 181 caller = vfst.method()->method_holder(); | |
| 182 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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183 if (line_number == -1) { |
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184 // show method name if it's a native method |
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185 trace = vfst.method()->name_and_sig_as_C_string(); |
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186 } |
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187 Symbol* s = caller->source_file_name(); |
| 0 | 188 if (s != NULL) { |
| 189 source_file = s->as_C_string(); | |
| 190 } | |
| 191 } | |
| 192 } | |
| 193 if (caller != NULL) { | |
| 194 if (to_class != caller) { | |
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195 const char * from = caller->external_name(); |
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196 const char * to = to_class->external_name(); |
| 0 | 197 // print in a single call to reduce interleaving between threads |
| 198 if (source_file != NULL) { | |
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199 tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace); |
| 0 | 200 } else { |
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201 tty->print("RESOLVE %s %s (%s)\n", from, to, trace); |
| 0 | 202 } |
| 203 } | |
| 204 } | |
| 205 } | |
| 206 | |
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207 void trace_class_resolution(Klass* to_class) { |
| 0 | 208 EXCEPTION_MARK; |
| 209 trace_class_resolution_impl(to_class, THREAD); | |
| 210 if (HAS_PENDING_EXCEPTION) { | |
| 211 CLEAR_PENDING_EXCEPTION; | |
| 212 } | |
| 213 } | |
| 214 | |
| 215 // Wrapper to trace JVM functions | |
| 216 | |
| 217 #ifdef ASSERT | |
| 218 class JVMTraceWrapper : public StackObj { | |
| 219 public: | |
| 220 JVMTraceWrapper(const char* format, ...) { | |
| 221 if (TraceJVMCalls) { | |
| 222 va_list ap; | |
| 223 va_start(ap, format); | |
| 224 tty->print("JVM "); | |
| 225 tty->vprint_cr(format, ap); | |
| 226 va_end(ap); | |
| 227 } | |
| 228 } | |
| 229 }; | |
| 230 | |
| 231 Histogram* JVMHistogram; | |
| 232 volatile jint JVMHistogram_lock = 0; | |
| 233 | |
| 234 class JVMHistogramElement : public HistogramElement { | |
| 235 public: | |
| 236 JVMHistogramElement(const char* name); | |
| 237 }; | |
| 238 | |
| 239 JVMHistogramElement::JVMHistogramElement(const char* elementName) { | |
| 240 _name = elementName; | |
| 241 uintx count = 0; | |
| 242 | |
| 243 while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) { | |
| 244 while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) { | |
| 245 count +=1; | |
| 246 if ( (WarnOnStalledSpinLock > 0) | |
| 247 && (count % WarnOnStalledSpinLock == 0)) { | |
| 248 warning("JVMHistogram_lock seems to be stalled"); | |
| 249 } | |
| 250 } | |
| 251 } | |
| 252 | |
| 253 if(JVMHistogram == NULL) | |
| 254 JVMHistogram = new Histogram("JVM Call Counts",100); | |
| 255 | |
| 256 JVMHistogram->add_element(this); | |
| 257 Atomic::dec(&JVMHistogram_lock); | |
| 258 } | |
| 259 | |
| 260 #define JVMCountWrapper(arg) \ | |
| 261 static JVMHistogramElement* e = new JVMHistogramElement(arg); \ | |
| 262 if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen! | |
| 263 | |
| 264 #define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) | |
| 265 #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) | |
| 266 #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) | |
| 267 #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) | |
| 268 #else | |
| 269 #define JVMWrapper(arg1) | |
| 270 #define JVMWrapper2(arg1, arg2) | |
| 271 #define JVMWrapper3(arg1, arg2, arg3) | |
| 272 #define JVMWrapper4(arg1, arg2, arg3, arg4) | |
| 273 #endif | |
| 274 | |
| 275 | |
| 276 // Interface version ///////////////////////////////////////////////////////////////////// | |
| 277 | |
| 278 | |
| 279 JVM_LEAF(jint, JVM_GetInterfaceVersion()) | |
| 280 return JVM_INTERFACE_VERSION; | |
| 281 JVM_END | |
| 282 | |
| 283 | |
| 284 // java.lang.System ////////////////////////////////////////////////////////////////////// | |
| 285 | |
| 286 | |
| 287 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored)) | |
| 288 JVMWrapper("JVM_CurrentTimeMillis"); | |
| 289 return os::javaTimeMillis(); | |
| 290 JVM_END | |
| 291 | |
| 292 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored)) | |
| 293 JVMWrapper("JVM_NanoTime"); | |
| 294 return os::javaTimeNanos(); | |
| 295 JVM_END | |
| 296 | |
| 297 | |
| 298 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, | |
| 299 jobject dst, jint dst_pos, jint length)) | |
| 300 JVMWrapper("JVM_ArrayCopy"); | |
| 301 // Check if we have null pointers | |
| 302 if (src == NULL || dst == NULL) { | |
| 303 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 304 } | |
| 305 arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); | |
| 306 arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); | |
| 307 assert(s->is_oop(), "JVM_ArrayCopy: src not an oop"); | |
| 308 assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); | |
| 309 // Do copy | |
| 6983 | 310 s->klass()->copy_array(s, src_pos, d, dst_pos, length, thread); |
| 0 | 311 JVM_END |
| 312 | |
| 313 | |
| 314 static void set_property(Handle props, const char* key, const char* value, TRAPS) { | |
| 315 JavaValue r(T_OBJECT); | |
| 316 // public synchronized Object put(Object key, Object value); | |
| 317 HandleMark hm(THREAD); | |
| 318 Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK); | |
| 319 Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK); | |
| 320 JavaCalls::call_virtual(&r, | |
| 321 props, | |
| 1142 | 322 KlassHandle(THREAD, SystemDictionary::Properties_klass()), |
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323 vmSymbols::put_name(), |
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324 vmSymbols::object_object_object_signature(), |
| 0 | 325 key_str, |
| 326 value_str, | |
| 327 THREAD); | |
| 328 } | |
| 329 | |
| 330 | |
| 331 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties)); | |
| 332 | |
| 333 | |
| 334 JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties)) | |
| 335 JVMWrapper("JVM_InitProperties"); | |
| 336 ResourceMark rm; | |
| 337 | |
| 338 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
| 339 | |
| 340 // System property list includes both user set via -D option and | |
| 341 // jvm system specific properties. | |
| 342 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
| 343 PUTPROP(props, p->key(), p->value()); | |
| 344 } | |
| 345 | |
| 346 // Convert the -XX:MaxDirectMemorySize= command line flag | |
| 347 // to the sun.nio.MaxDirectMemorySize property. | |
| 348 // Do this after setting user properties to prevent people | |
| 349 // from setting the value with a -D option, as requested. | |
| 350 { | |
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351 if (FLAG_IS_DEFAULT(MaxDirectMemorySize)) { |
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352 PUTPROP(props, "sun.nio.MaxDirectMemorySize", "-1"); |
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353 } else { |
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354 char as_chars[256]; |
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355 jio_snprintf(as_chars, sizeof(as_chars), UINTX_FORMAT, MaxDirectMemorySize); |
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356 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); |
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357 } |
| 0 | 358 } |
| 359 | |
| 360 // JVM monitoring and management support | |
| 361 // Add the sun.management.compiler property for the compiler's name | |
| 362 { | |
| 363 #undef CSIZE | |
| 364 #if defined(_LP64) || defined(_WIN64) | |
| 365 #define CSIZE "64-Bit " | |
| 366 #else | |
| 367 #define CSIZE | |
| 368 #endif // 64bit | |
| 369 | |
| 370 #ifdef TIERED | |
| 371 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; | |
| 372 #else | |
| 373 #if defined(COMPILER1) | |
| 374 const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; | |
| 375 #elif defined(COMPILER2) | |
| 376 const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; | |
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377 #elif defined(GRAAL) |
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378 const char* compiler_name = "HotSpot " CSIZE "Graal Compiler"; |
| 0 | 379 #else |
| 380 const char* compiler_name = ""; | |
| 381 #endif // compilers | |
| 382 #endif // TIERED | |
| 383 | |
| 384 if (*compiler_name != '\0' && | |
| 385 (Arguments::mode() != Arguments::_int)) { | |
| 386 PUTPROP(props, "sun.management.compiler", compiler_name); | |
| 387 } | |
| 388 } | |
| 389 | |
| 390 return properties; | |
| 391 JVM_END | |
| 392 | |
| 393 | |
| 394 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// | |
| 395 | |
| 396 extern volatile jint vm_created; | |
| 397 | |
| 398 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
| 399 if (vm_created != 0 && (code == 0)) { | |
| 400 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
| 401 Universe::run_finalizers_on_exit(); | |
| 402 } | |
| 403 before_exit(thread); | |
| 404 vm_exit(code); | |
| 405 JVM_END | |
| 406 | |
| 407 | |
| 408 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
| 409 before_exit(thread); | |
| 410 vm_exit(code); | |
| 411 JVM_END | |
| 412 | |
| 413 | |
| 414 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
| 415 register_on_exit_function(func); | |
| 416 JVM_END | |
| 417 | |
| 418 | |
| 419 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
| 420 JVMWrapper("JVM_GC"); | |
| 421 if (!DisableExplicitGC) { | |
| 422 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
| 423 } | |
| 424 JVM_END | |
| 425 | |
| 426 | |
| 427 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
| 428 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
| 429 return Universe::heap()->millis_since_last_gc(); | |
| 430 JVM_END | |
| 431 | |
| 432 | |
| 433 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
| 434 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
| 435 JVM_END | |
| 436 | |
| 437 | |
| 438 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
| 439 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
| 440 JVM_END | |
| 441 | |
| 442 static inline jlong convert_size_t_to_jlong(size_t val) { | |
| 443 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
| 444 NOT_LP64 (return (jlong)val;) | |
| 445 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
| 446 } | |
| 447 | |
| 448 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
| 449 JVMWrapper("JVM_TotalMemory"); | |
| 450 size_t n = Universe::heap()->capacity(); | |
| 451 return convert_size_t_to_jlong(n); | |
| 452 JVM_END | |
| 453 | |
| 454 | |
| 455 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
| 456 JVMWrapper("JVM_FreeMemory"); | |
| 457 CollectedHeap* ch = Universe::heap(); | |
|
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458 size_t n; |
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459 { |
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460 MutexLocker x(Heap_lock); |
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461 n = ch->capacity() - ch->used(); |
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462 } |
| 0 | 463 return convert_size_t_to_jlong(n); |
| 464 JVM_END | |
| 465 | |
| 466 | |
| 467 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
| 468 JVMWrapper("JVM_MaxMemory"); | |
| 469 size_t n = Universe::heap()->max_capacity(); | |
| 470 return convert_size_t_to_jlong(n); | |
| 471 JVM_END | |
| 472 | |
| 473 | |
| 474 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
| 475 JVMWrapper("JVM_ActiveProcessorCount"); | |
| 476 return os::active_processor_count(); | |
| 477 JVM_END | |
| 478 | |
| 479 | |
| 480 | |
| 481 // java.lang.Throwable ////////////////////////////////////////////////////// | |
| 482 | |
| 483 | |
| 484 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
| 485 JVMWrapper("JVM_FillInStackTrace"); | |
| 486 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
| 487 java_lang_Throwable::fill_in_stack_trace(exception); | |
| 488 JVM_END | |
| 489 | |
| 490 | |
| 491 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
| 492 JVMWrapper("JVM_GetStackTraceDepth"); | |
| 493 oop exception = JNIHandles::resolve(throwable); | |
| 494 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
| 495 JVM_END | |
| 496 | |
| 497 | |
| 498 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
| 499 JVMWrapper("JVM_GetStackTraceElement"); | |
| 500 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
| 501 oop exception = JNIHandles::resolve(throwable); | |
| 502 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
| 503 return JNIHandles::make_local(env, element); | |
| 504 JVM_END | |
| 505 | |
| 506 | |
| 507 // java.lang.Object /////////////////////////////////////////////// | |
| 508 | |
| 509 | |
| 510 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
| 511 JVMWrapper("JVM_IHashCode"); | |
| 512 // as implemented in the classic virtual machine; return 0 if object is NULL | |
| 513 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
| 514 JVM_END | |
| 515 | |
| 516 | |
| 517 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
| 518 JVMWrapper("JVM_MonitorWait"); | |
| 519 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 520 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
| 521 if (JvmtiExport::should_post_monitor_wait()) { | |
| 522 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
| 523 } | |
| 524 ObjectSynchronizer::wait(obj, ms, CHECK); | |
| 525 JVM_END | |
| 526 | |
| 527 | |
| 528 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
| 529 JVMWrapper("JVM_MonitorNotify"); | |
| 530 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 531 ObjectSynchronizer::notify(obj, CHECK); | |
| 532 JVM_END | |
| 533 | |
| 534 | |
| 535 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
| 536 JVMWrapper("JVM_MonitorNotifyAll"); | |
| 537 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 538 ObjectSynchronizer::notifyall(obj, CHECK); | |
| 539 JVM_END | |
| 540 | |
| 541 | |
| 542 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
| 543 JVMWrapper("JVM_Clone"); | |
| 544 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 545 const KlassHandle klass (THREAD, obj->klass()); | |
| 546 JvmtiVMObjectAllocEventCollector oam; | |
| 547 | |
| 548 #ifdef ASSERT | |
| 549 // Just checking that the cloneable flag is set correct | |
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550 if (obj->is_array()) { |
| 0 | 551 guarantee(klass->is_cloneable(), "all arrays are cloneable"); |
| 552 } else { | |
| 553 guarantee(obj->is_instance(), "should be instanceOop"); | |
| 1142 | 554 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
| 0 | 555 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
| 556 } | |
| 557 #endif | |
| 558 | |
| 559 // Check if class of obj supports the Cloneable interface. | |
| 560 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
| 561 if (!klass->is_cloneable()) { | |
| 562 ResourceMark rm(THREAD); | |
| 563 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
| 564 } | |
| 565 | |
| 566 // Make shallow object copy | |
| 567 const int size = obj->size(); | |
| 568 oop new_obj = NULL; | |
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569 if (obj->is_array()) { |
| 0 | 570 const int length = ((arrayOop)obj())->length(); |
| 571 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
| 572 } else { | |
| 573 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
| 574 } | |
| 575 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
| 576 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
| 577 // be suspended in the middle of copying the pointer and end up with parts | |
| 578 // of two different pointers in the field. Subsequent dereferences will crash. | |
| 579 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
| 580 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
| 581 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
| 582 // The same is true of StubRoutines::object_copy and the various oop_copy | |
| 583 // variants, and of the code generated by the inline_native_clone intrinsic. | |
| 584 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
| 585 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
| 586 (size_t)align_object_size(size) / HeapWordsPerLong); | |
| 587 // Clear the header | |
| 588 new_obj->init_mark(); | |
| 589 | |
| 590 // Store check (mark entire object and let gc sort it out) | |
| 591 BarrierSet* bs = Universe::heap()->barrier_set(); | |
| 592 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
| 593 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
| 594 | |
| 595 // Caution: this involves a java upcall, so the clone should be | |
| 596 // "gc-robust" by this stage. | |
| 597 if (klass->has_finalizer()) { | |
| 598 assert(obj->is_instance(), "should be instanceOop"); | |
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599 new_obj = InstanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); |
| 0 | 600 } |
| 601 | |
| 602 return JNIHandles::make_local(env, oop(new_obj)); | |
| 603 JVM_END | |
| 604 | |
| 605 // java.lang.Compiler //////////////////////////////////////////////////// | |
| 606 | |
| 607 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
| 608 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
| 609 // functions are all silently ignored unless JVM warnings are printed. | |
| 610 | |
| 611 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
| 612 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
| 613 JVM_END | |
| 614 | |
| 615 | |
| 616 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
| 617 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
| 618 return JNI_FALSE; | |
| 619 JVM_END | |
| 620 | |
| 621 | |
| 622 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
| 623 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
| 624 return JNI_FALSE; | |
| 625 JVM_END | |
| 626 | |
| 627 | |
| 628 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
| 629 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
| 630 return JNI_FALSE; | |
| 631 JVM_END | |
| 632 | |
| 633 | |
| 634 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
| 635 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
| 636 return NULL; | |
| 637 JVM_END | |
| 638 | |
| 639 | |
| 640 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
| 641 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
| 642 JVM_END | |
| 643 | |
| 644 | |
| 645 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
| 646 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
| 647 JVM_END | |
| 648 | |
| 649 | |
| 650 | |
| 651 // Error message support ////////////////////////////////////////////////////// | |
| 652 | |
| 653 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
| 654 JVMWrapper("JVM_GetLastErrorString"); | |
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655 return (jint)os::lasterror(buf, len); |
| 0 | 656 JVM_END |
| 657 | |
| 658 | |
| 659 // java.io.File /////////////////////////////////////////////////////////////// | |
| 660 | |
| 661 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
| 662 JVMWrapper2("JVM_NativePath (%s)", path); | |
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663 return os::native_path(path); |
| 0 | 664 JVM_END |
| 665 | |
| 666 | |
| 667 // Misc. class handling /////////////////////////////////////////////////////////// | |
| 668 | |
| 669 | |
| 670 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
| 671 JVMWrapper("JVM_GetCallerClass"); | |
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672 |
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673 // Pre-JDK 8 and early builds of JDK 8 don't have a CallerSensitive annotation; or |
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674 // sun.reflect.Reflection.getCallerClass with a depth parameter is provided |
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675 // temporarily for existing code to use until a replacement API is defined. |
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676 if (SystemDictionary::reflect_CallerSensitive_klass() == NULL || depth != JVM_CALLER_DEPTH) { |
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677 Klass* k = thread->security_get_caller_class(depth); |
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678 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, k->java_mirror()); |
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679 } |
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680 |
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681 // Getting the class of the caller frame. |
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682 // |
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683 // The call stack at this point looks something like this: |
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684 // |
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685 // [0] [ @CallerSensitive public sun.reflect.Reflection.getCallerClass ] |
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686 // [1] [ @CallerSensitive API.method ] |
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687 // [.] [ (skipped intermediate frames) ] |
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688 // [n] [ caller ] |
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689 vframeStream vfst(thread); |
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690 // Cf. LibraryCallKit::inline_native_Reflection_getCallerClass |
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691 for (int n = 0; !vfst.at_end(); vfst.security_next(), n++) { |
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692 Method* m = vfst.method(); |
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693 assert(m != NULL, "sanity"); |
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694 switch (n) { |
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695 case 0: |
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696 // This must only be called from Reflection.getCallerClass |
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697 if (m->intrinsic_id() != vmIntrinsics::_getCallerClass) { |
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698 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetCallerClass must only be called from Reflection.getCallerClass"); |
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699 } |
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700 // fall-through |
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701 case 1: |
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702 // Frame 0 and 1 must be caller sensitive. |
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703 if (!m->caller_sensitive()) { |
|
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|
704 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), err_msg("CallerSensitive annotation expected at frame %d", n)); |
|
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changeset
|
705 } |
|
16885e702c88
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parents:
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diff
changeset
|
706 break; |
|
16885e702c88
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diff
changeset
|
707 default: |
|
16885e702c88
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diff
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|
708 if (!m->is_ignored_by_security_stack_walk()) { |
|
16885e702c88
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diff
changeset
|
709 // We have reached the desired frame; return the holder class. |
|
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changeset
|
710 return (jclass) JNIHandles::make_local(env, m->method_holder()->java_mirror()); |
|
16885e702c88
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parents:
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diff
changeset
|
711 } |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
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diff
changeset
|
712 break; |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
713 } |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
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diff
changeset
|
714 } |
|
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|
715 return NULL; |
| 0 | 716 JVM_END |
| 717 | |
| 718 | |
| 719 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
| 720 JVMWrapper("JVM_FindPrimitiveClass"); | |
| 721 oop mirror = NULL; | |
| 722 BasicType t = name2type(utf); | |
| 723 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
| 724 mirror = Universe::java_mirror(t); | |
| 725 } | |
| 726 if (mirror == NULL) { | |
| 727 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
| 728 } else { | |
| 729 return (jclass) JNIHandles::make_local(env, mirror); | |
| 730 } | |
| 731 JVM_END | |
| 732 | |
| 733 | |
| 734 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
| 735 JVMWrapper("JVM_ResolveClass"); | |
| 736 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
| 737 JVM_END | |
| 738 | |
|
878
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|
739 |
|
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|
740 // Returns a class loaded by the bootstrap class loader; or null |
|
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|
741 // if not found. ClassNotFoundException is not thrown. |
|
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|
742 // |
|
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|
743 // Rationale behind JVM_FindClassFromBootLoader |
|
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|
744 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
|
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745 // b> because of (a) java.dll has a direct dependecy on the unexported |
|
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|
746 // private symbol "_JVM_FindClassFromClassLoader@20". |
|
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|
747 // c> the launcher cannot use the private symbol as it dynamically opens |
|
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|
748 // the entry point, so if something changes, the launcher will fail |
|
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|
749 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
|
abe076e3636f
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|
750 // stable exported interface. |
|
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|
751 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
|
abe076e3636f
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diff
changeset
|
752 // signature to change from _JVM_FindClassFromClassLoader@20 to |
|
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changeset
|
753 // JVM_FindClassFromClassLoader and will not be backward compatible |
|
abe076e3636f
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|
754 // with older JDKs. |
|
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|
755 // Thus a public/stable exported entry point is the right solution, |
|
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changeset
|
756 // public here means public in linker semantics, and is exported only |
|
abe076e3636f
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diff
changeset
|
757 // to the JDK, and is not intended to be a public API. |
|
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diff
changeset
|
758 |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
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parents:
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diff
changeset
|
759 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
|
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diff
changeset
|
760 const char* name)) |
|
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diff
changeset
|
761 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
|
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diff
changeset
|
762 |
|
abe076e3636f
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diff
changeset
|
763 // Java libraries should ensure that name is never null... |
|
2177
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changeset
|
764 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
|
878
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mchung
parents:
875
diff
changeset
|
765 // It's impossible to create this class; the name cannot fit |
|
abe076e3636f
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mchung
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diff
changeset
|
766 // into the constant pool. |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
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diff
changeset
|
767 return NULL; |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
768 } |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
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diff
changeset
|
769 |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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diff
changeset
|
770 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6271
diff
changeset
|
771 Klass* k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
|
878
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
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diff
changeset
|
772 if (k == NULL) { |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
773 return NULL; |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
774 } |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
775 |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
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diff
changeset
|
776 if (TraceClassResolution) { |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
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diff
changeset
|
777 trace_class_resolution(k); |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
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diff
changeset
|
778 } |
| 6983 | 779 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
|
878
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
780 JVM_END |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
781 |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
782 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
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diff
changeset
|
783 jboolean init, jobject loader, |
|
abe076e3636f
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mchung
parents:
875
diff
changeset
|
784 jboolean throwError)) |
|
abe076e3636f
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mchung
parents:
875
diff
changeset
|
785 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
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diff
changeset
|
786 throwError ? "error" : "exception"); |
| 388 | 787 // Java libraries should ensure that name is never null... |
|
2177
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parents:
2162
diff
changeset
|
788 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
| 388 | 789 // It's impossible to create this class; the name cannot fit |
| 790 // into the constant pool. | |
| 791 if (throwError) { | |
| 792 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 793 } else { | |
| 794 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
| 795 } | |
| 796 } | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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diff
changeset
|
797 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
| 388 | 798 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
| 799 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 800 Handle(), throwError, THREAD); | |
| 801 | |
| 802 if (TraceClassResolution && result != NULL) { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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changeset
|
803 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
| 388 | 804 } |
| 805 return result; | |
| 0 | 806 JVM_END |
| 807 | |
| 808 | |
| 809 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
| 810 jboolean init, jclass from)) | |
| 811 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
|
2177
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6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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diff
changeset
|
812 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
| 0 | 813 // It's impossible to create this class; the name cannot fit |
| 814 // into the constant pool. | |
| 815 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 816 } | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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diff
changeset
|
817 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
| 0 | 818 oop from_class_oop = JNIHandles::resolve(from); |
|
6725
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6964458: Reimplement class meta-data storage to use native memory
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changeset
|
819 Klass* from_class = (from_class_oop == NULL) |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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parents:
6271
diff
changeset
|
820 ? (Klass*)NULL |
|
da91efe96a93
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diff
changeset
|
821 : java_lang_Class::as_Klass(from_class_oop); |
| 0 | 822 oop class_loader = NULL; |
| 823 oop protection_domain = NULL; | |
| 824 if (from_class != NULL) { | |
| 6983 | 825 class_loader = from_class->class_loader(); |
| 826 protection_domain = from_class->protection_domain(); | |
| 0 | 827 } |
| 828 Handle h_loader(THREAD, class_loader); | |
| 829 Handle h_prot (THREAD, protection_domain); | |
| 830 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 831 h_prot, true, thread); | |
| 832 | |
| 833 if (TraceClassResolution && result != NULL) { | |
| 834 // this function is generally only used for class loading during verification. | |
| 835 ResourceMark rm; | |
| 836 oop from_mirror = JNIHandles::resolve_non_null(from); | |
|
6725
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changeset
|
837 Klass* from_class = java_lang_Class::as_Klass(from_mirror); |
| 6983 | 838 const char * from_name = from_class->external_name(); |
| 0 | 839 |
| 840 oop mirror = JNIHandles::resolve_non_null(result); | |
|
6725
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changeset
|
841 Klass* to_class = java_lang_Class::as_Klass(mirror); |
| 6983 | 842 const char * to = to_class->external_name(); |
| 0 | 843 tty->print("RESOLVE %s %s (verification)\n", from_name, to); |
| 844 } | |
| 845 | |
| 846 return result; | |
| 847 JVM_END | |
| 848 | |
| 849 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
| 850 if (loader.is_null()) { | |
| 851 return; | |
| 852 } | |
| 853 | |
| 854 // check whether the current caller thread holds the lock or not. | |
| 855 // If not, increment the corresponding counter | |
| 856 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
| 857 ObjectSynchronizer::owner_self) { | |
| 858 counter->inc(); | |
| 859 } | |
| 860 } | |
| 861 | |
| 862 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
|
973
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
878
diff
changeset
|
863 // and JVM_DefineClassWithSourceCond() |
|
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
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diff
changeset
|
864 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
|
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
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878
diff
changeset
|
865 jobject loader, const jbyte *buf, |
|
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
878
diff
changeset
|
866 jsize len, jobject pd, const char *source, |
|
ad6585fd4087
6830542: Performance: JVM_DefineClass already verified.
acorn
parents:
878
diff
changeset
|
867 jboolean verify, TRAPS) { |
|
431
a45484ea312d
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
388
diff
changeset
|
868 if (source == NULL) source = "__JVM_DefineClass__"; |
| 0 | 869 |
|
875
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
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diff
changeset
|
870 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
|
6a93908f268f
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mchung
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726
diff
changeset
|
871 JavaThread* jt = (JavaThread*) THREAD; |
|
6a93908f268f
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mchung
parents:
726
diff
changeset
|
872 |
|
6a93908f268f
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mchung
parents:
726
diff
changeset
|
873 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
|
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
726
diff
changeset
|
874 ClassLoader::perf_define_appclass_selftime(), |
|
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
726
diff
changeset
|
875 ClassLoader::perf_define_appclasses(), |
|
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
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726
diff
changeset
|
876 jt->get_thread_stat()->perf_recursion_counts_addr(), |
|
6a93908f268f
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mchung
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726
diff
changeset
|
877 jt->get_thread_stat()->perf_timers_addr(), |
|
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mchung
parents:
726
diff
changeset
|
878 PerfClassTraceTime::DEFINE_CLASS); |
|
6a93908f268f
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mchung
parents:
726
diff
changeset
|
879 |
|
6a93908f268f
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mchung
parents:
726
diff
changeset
|
880 if (UsePerfData) { |
|
6a93908f268f
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mchung
parents:
726
diff
changeset
|
881 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
|
6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents:
726
diff
changeset
|
882 } |
|
6a93908f268f
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mchung
parents:
726
diff
changeset
|
883 |
| 0 | 884 // Since exceptions can be thrown, class initialization can take place |
| 885 // if name is NULL no check for class name in .class stream has to be made. | |
|
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changeset
|
886 TempNewSymbol class_name = NULL; |
| 0 | 887 if (name != NULL) { |
| 888 const int str_len = (int)strlen(name); | |
|
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|
889 if (str_len > Symbol::max_length()) { |
| 0 | 890 // It's impossible to create this class; the name cannot fit |
| 891 // into the constant pool. | |
| 892 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 893 } | |
|
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changeset
|
894 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
| 0 | 895 } |
| 896 | |
| 897 ResourceMark rm(THREAD); | |
| 898 ClassFileStream st((u1*) buf, len, (char *)source); | |
| 899 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
| 900 if (UsePerfData) { | |
| 901 is_lock_held_by_thread(class_loader, | |
| 902 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
| 903 THREAD); | |
| 904 } | |
| 905 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
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906 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, |
| 0 | 907 protection_domain, &st, |
|
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908 verify != 0, |
| 0 | 909 CHECK_NULL); |
| 910 | |
| 911 if (TraceClassResolution && k != NULL) { | |
| 912 trace_class_resolution(k); | |
| 913 } | |
| 914 | |
| 6983 | 915 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
| 0 | 916 } |
| 917 | |
| 918 | |
| 919 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
| 920 JVMWrapper2("JVM_DefineClass %s", name); | |
| 921 | |
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922 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
| 0 | 923 JVM_END |
| 924 | |
| 925 | |
| 926 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
| 927 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
| 928 | |
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929 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
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930 JVM_END |
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931 |
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932 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
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933 jobject loader, const jbyte *buf, |
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934 jsize len, jobject pd, |
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935 const char *source, jboolean verify)) |
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936 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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937 |
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938 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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939 JVM_END |
| 0 | 940 |
| 941 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
| 942 JVMWrapper("JVM_FindLoadedClass"); | |
| 943 ResourceMark rm(THREAD); | |
| 944 | |
| 945 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 946 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
| 947 | |
| 948 const char* str = java_lang_String::as_utf8_string(string()); | |
| 949 // Sanity check, don't expect null | |
| 950 if (str == NULL) return NULL; | |
| 951 | |
| 952 const int str_len = (int)strlen(str); | |
|
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953 if (str_len > Symbol::max_length()) { |
| 0 | 954 // It's impossible to create this class; the name cannot fit |
| 955 // into the constant pool. | |
| 956 return NULL; | |
| 957 } | |
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958 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
| 0 | 959 |
| 960 // Security Note: | |
| 961 // The Java level wrapper will perform the necessary security check allowing | |
| 962 // us to pass the NULL as the initiating class loader. | |
| 963 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
| 964 if (UsePerfData) { | |
| 965 is_lock_held_by_thread(h_loader, | |
| 966 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
| 967 THREAD); | |
| 968 } | |
| 969 | |
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970 Klass* k = SystemDictionary::find_instance_or_array_klass(klass_name, |
| 0 | 971 h_loader, |
| 972 Handle(), | |
| 973 CHECK_NULL); | |
| 974 | |
| 975 return (k == NULL) ? NULL : | |
| 6983 | 976 (jclass) JNIHandles::make_local(env, k->java_mirror()); |
| 0 | 977 JVM_END |
| 978 | |
| 979 | |
| 980 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
| 981 | |
| 982 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
| 983 assert (cls != NULL, "illegal class"); | |
| 984 JVMWrapper("JVM_GetClassName"); | |
| 985 JvmtiVMObjectAllocEventCollector oam; | |
| 986 ResourceMark rm(THREAD); | |
| 987 const char* name; | |
| 988 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 989 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
| 990 } else { | |
| 991 // Consider caching interned string in Klass | |
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992 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 0 | 993 assert(k->is_klass(), "just checking"); |
| 6983 | 994 name = k->external_name(); |
| 0 | 995 } |
| 996 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
| 997 return (jstring) JNIHandles::make_local(env, result); | |
| 998 JVM_END | |
| 999 | |
| 1000 | |
| 1001 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
| 1002 JVMWrapper("JVM_GetClassInterfaces"); | |
| 1003 JvmtiVMObjectAllocEventCollector oam; | |
| 1004 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1005 | |
| 1006 // Special handling for primitive objects | |
| 1007 if (java_lang_Class::is_primitive(mirror)) { | |
| 1008 // Primitive objects does not have any interfaces | |
| 1142 | 1009 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1010 return (jobjectArray) JNIHandles::make_local(env, r); |
| 1011 } | |
| 1012 | |
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1013 KlassHandle klass(thread, java_lang_Class::as_Klass(mirror)); |
| 0 | 1014 // Figure size of result array |
| 1015 int size; | |
| 1016 if (klass->oop_is_instance()) { | |
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1017 size = InstanceKlass::cast(klass())->local_interfaces()->length(); |
| 0 | 1018 } else { |
| 1019 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
| 1020 size = 2; | |
| 1021 } | |
| 1022 | |
| 1023 // Allocate result array | |
| 1142 | 1024 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
| 0 | 1025 objArrayHandle result (THREAD, r); |
| 1026 // Fill in result | |
| 1027 if (klass->oop_is_instance()) { | |
| 1028 // Regular instance klass, fill in all local interfaces | |
| 1029 for (int index = 0; index < size; index++) { | |
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1030 Klass* k = InstanceKlass::cast(klass())->local_interfaces()->at(index); |
| 6983 | 1031 result->obj_at_put(index, k->java_mirror()); |
| 0 | 1032 } |
| 1033 } else { | |
| 1034 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
| 6983 | 1035 result->obj_at_put(0, SystemDictionary::Cloneable_klass()->java_mirror()); |
| 1036 result->obj_at_put(1, SystemDictionary::Serializable_klass()->java_mirror()); | |
| 0 | 1037 } |
| 1038 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1039 JVM_END | |
| 1040 | |
| 1041 | |
| 1042 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
| 1043 JVMWrapper("JVM_GetClassLoader"); | |
| 1044 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1045 return NULL; | |
| 1046 } | |
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1047 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1048 oop loader = k->class_loader(); |
| 0 | 1049 return JNIHandles::make_local(env, loader); |
| 1050 JVM_END | |
| 1051 | |
| 1052 | |
| 1053 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
| 1054 JVMWrapper("JVM_IsInterface"); | |
| 1055 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1056 if (java_lang_Class::is_primitive(mirror)) { | |
| 1057 return JNI_FALSE; | |
| 1058 } | |
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1059 Klass* k = java_lang_Class::as_Klass(mirror); |
| 6983 | 1060 jboolean result = k->is_interface(); |
| 1061 assert(!result || k->oop_is_instance(), | |
| 0 | 1062 "all interfaces are instance types"); |
| 1063 // The compiler intrinsic for isInterface tests the | |
| 1064 // Klass::_access_flags bits in the same way. | |
| 1065 return result; | |
| 1066 JVM_END | |
| 1067 | |
| 1068 | |
| 1069 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
| 1070 JVMWrapper("JVM_GetClassSigners"); | |
| 1071 JvmtiVMObjectAllocEventCollector oam; | |
| 1072 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1073 // There are no signers for primitive types | |
| 1074 return NULL; | |
| 1075 } | |
| 1076 | |
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1077 objArrayOop signers = java_lang_Class::signers(JNIHandles::resolve_non_null(cls)); |
| 0 | 1078 |
| 1079 // If there are no signers set in the class, or if the class | |
| 1080 // is an array, return NULL. | |
| 1081 if (signers == NULL) return NULL; | |
| 1082 | |
| 1083 // copy of the signers array | |
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1084 Klass* element = ObjArrayKlass::cast(signers->klass())->element_klass(); |
| 0 | 1085 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); |
| 1086 for (int index = 0; index < signers->length(); index++) { | |
| 1087 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
| 1088 } | |
| 1089 | |
| 1090 // return the copy | |
| 1091 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
| 1092 JVM_END | |
| 1093 | |
| 1094 | |
| 1095 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
| 1096 JVMWrapper("JVM_SetClassSigners"); | |
| 1097 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1098 // This call is ignored for primitive types and arrays. | |
| 1099 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
| 1100 // be called with an array. Only the bootstrap loader creates arrays. | |
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1101 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1102 if (k->oop_is_instance()) { |
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1103 java_lang_Class::set_signers(k->java_mirror(), objArrayOop(JNIHandles::resolve(signers))); |
| 0 | 1104 } |
| 1105 } | |
| 1106 JVM_END | |
| 1107 | |
| 1108 | |
| 1109 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
| 1110 JVMWrapper("JVM_GetProtectionDomain"); | |
| 1111 if (JNIHandles::resolve(cls) == NULL) { | |
| 1112 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
| 1113 } | |
| 1114 | |
| 1115 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1116 // Primitive types does not have a protection domain. | |
| 1117 return NULL; | |
| 1118 } | |
| 1119 | |
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1120 oop pd = java_lang_Class::protection_domain(JNIHandles::resolve(cls)); |
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1121 return (jobject) JNIHandles::make_local(env, pd); |
| 0 | 1122 JVM_END |
| 1123 | |
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1124 // Preserved in Graal repo so that linking against a JDK7 libjava.so works |
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1125 JVM_ENTRY(void, JVM_SetProtectionDomain(JNIEnv *env, jclass cls, jobject protection_domain)) |
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1126 JVMWrapper("JVM_SetProtectionDomain"); |
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1127 |
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1128 ResourceMark rm(THREAD); |
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1129 const char* msg = "Obsolete JVM_SetProtectionDomain function called"; |
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1130 size_t buflen = strlen(msg); |
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1131 char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen); |
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1132 jio_snprintf(buf, buflen, msg); |
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1133 THROW_MSG(vmSymbols::java_lang_LinkageError(), buf); |
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1134 JVM_END |
| 0 | 1135 |
| 11010 | 1136 static bool is_authorized(Handle context, instanceKlassHandle klass, TRAPS) { |
| 1137 // If there is a security manager and protection domain, check the access | |
| 1138 // in the protection domain, otherwise it is authorized. | |
| 1139 if (java_lang_System::has_security_manager()) { | |
| 1140 | |
| 1141 // For bootstrapping, if pd implies method isn't in the JDK, allow | |
| 1142 // this context to revert to older behavior. | |
| 1143 // In this case the isAuthorized field in AccessControlContext is also not | |
| 1144 // present. | |
| 1145 if (Universe::protection_domain_implies_method() == NULL) { | |
| 1146 return true; | |
| 1147 } | |
| 1148 | |
| 1149 // Whitelist certain access control contexts | |
| 1150 if (java_security_AccessControlContext::is_authorized(context)) { | |
| 1151 return true; | |
| 1152 } | |
| 1153 | |
| 1154 oop prot = klass->protection_domain(); | |
| 1155 if (prot != NULL) { | |
| 1156 // Call pd.implies(new SecurityPermission("createAccessControlContext")) | |
| 1157 // in the new wrapper. | |
| 1158 methodHandle m(THREAD, Universe::protection_domain_implies_method()); | |
| 1159 Handle h_prot(THREAD, prot); | |
| 1160 JavaValue result(T_BOOLEAN); | |
| 1161 JavaCallArguments args(h_prot); | |
| 1162 JavaCalls::call(&result, m, &args, CHECK_false); | |
| 1163 return (result.get_jboolean() != 0); | |
| 1164 } | |
| 1165 } | |
| 1166 return true; | |
| 1167 } | |
| 1168 | |
| 1169 // Create an AccessControlContext with a protection domain with null codesource | |
| 1170 // and null permissions - which gives no permissions. | |
| 1171 oop create_dummy_access_control_context(TRAPS) { | |
| 1172 InstanceKlass* pd_klass = InstanceKlass::cast(SystemDictionary::ProtectionDomain_klass()); | |
| 1173 // new ProtectionDomain(null,null); | |
| 1174 oop null_protection_domain = pd_klass->allocate_instance(CHECK_NULL); | |
| 1175 Handle null_pd(THREAD, null_protection_domain); | |
| 1176 | |
| 1177 // new ProtectionDomain[] {pd}; | |
| 1178 objArrayOop context = oopFactory::new_objArray(pd_klass, 1, CHECK_NULL); | |
| 1179 context->obj_at_put(0, null_pd()); | |
| 1180 | |
| 1181 // new AccessControlContext(new ProtectionDomain[] {pd}) | |
| 1182 objArrayHandle h_context(THREAD, context); | |
| 1183 oop result = java_security_AccessControlContext::create(h_context, false, Handle(), CHECK_NULL); | |
| 1184 return result; | |
| 1185 } | |
| 0 | 1186 |
| 1187 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
| 1188 JVMWrapper("JVM_DoPrivileged"); | |
| 1189 | |
| 1190 if (action == NULL) { | |
| 1191 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
| 1192 } | |
| 1193 | |
| 11010 | 1194 // Compute the frame initiating the do privileged operation and setup the privileged stack |
| 1195 vframeStream vfst(thread); | |
| 1196 vfst.security_get_caller_frame(1); | |
| 1197 | |
| 1198 if (vfst.at_end()) { | |
| 1199 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "no caller?"); | |
| 1200 } | |
| 1201 | |
| 1202 Method* method = vfst.method(); | |
| 1203 instanceKlassHandle klass (THREAD, method->method_holder()); | |
| 1204 | |
| 1205 // Check that action object understands "Object run()" | |
| 1206 Handle h_context; | |
| 1207 if (context != NULL) { | |
| 1208 h_context = Handle(THREAD, JNIHandles::resolve(context)); | |
| 1209 bool authorized = is_authorized(h_context, klass, CHECK_NULL); | |
| 1210 if (!authorized) { | |
| 1211 // Create an unprivileged access control object and call it's run function | |
| 1212 // instead. | |
| 1213 oop noprivs = create_dummy_access_control_context(CHECK_NULL); | |
| 1214 h_context = Handle(THREAD, noprivs); | |
| 1215 } | |
| 1216 } | |
| 0 | 1217 |
| 1218 // Check that action object understands "Object run()" | |
| 1219 Handle object (THREAD, JNIHandles::resolve(action)); | |
| 1220 | |
| 1221 // get run() method | |
| 6983 | 1222 Method* m_oop = object->klass()->uncached_lookup_method( |
| 0 | 1223 vmSymbols::run_method_name(), |
| 1224 vmSymbols::void_object_signature()); | |
| 1225 methodHandle m (THREAD, m_oop); | |
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1226 if (m.is_null() || !m->is_method() || !m()->is_public() || m()->is_static()) { |
| 0 | 1227 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); |
| 1228 } | |
| 1229 | |
| 11010 | 1230 // Stack allocated list of privileged stack elements |
| 1231 PrivilegedElement pi; | |
| 0 | 1232 if (!vfst.at_end()) { |
| 11010 | 1233 pi.initialize(&vfst, h_context(), thread->privileged_stack_top(), CHECK_NULL); |
| 0 | 1234 thread->set_privileged_stack_top(&pi); |
| 1235 } | |
| 1236 | |
| 1237 | |
| 1238 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
| 1239 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
| 1240 Handle pending_exception; | |
| 1241 JavaValue result(T_OBJECT); | |
| 1242 JavaCallArguments args(object); | |
| 1243 JavaCalls::call(&result, m, &args, THREAD); | |
| 1244 | |
| 1245 // done with action, remove ourselves from the list | |
| 1246 if (!vfst.at_end()) { | |
| 1247 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
| 1248 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
| 1249 } | |
| 1250 | |
| 1251 if (HAS_PENDING_EXCEPTION) { | |
| 1252 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
| 1253 CLEAR_PENDING_EXCEPTION; | |
| 1254 | |
| 1142 | 1255 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
| 1256 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
| 0 | 1257 // Throw a java.security.PrivilegedActionException(Exception e) exception |
| 1258 JavaCallArguments args(pending_exception); | |
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1259 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1260 vmSymbols::exception_void_signature(), |
| 0 | 1261 &args); |
| 1262 } | |
| 1263 } | |
| 1264 | |
| 1265 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
| 1266 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
| 1267 JVM_END | |
| 1268 | |
| 1269 | |
| 1270 // Returns the inherited_access_control_context field of the running thread. | |
| 1271 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1272 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
| 1273 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
| 1274 return JNIHandles::make_local(env, result); | |
| 1275 JVM_END | |
| 1276 | |
| 1277 class RegisterArrayForGC { | |
| 1278 private: | |
| 1279 JavaThread *_thread; | |
| 1280 public: | |
| 1281 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
| 1282 _thread = thread; | |
| 1283 _thread->register_array_for_gc(array); | |
| 1284 } | |
| 1285 | |
| 1286 ~RegisterArrayForGC() { | |
| 1287 _thread->register_array_for_gc(NULL); | |
| 1288 } | |
| 1289 }; | |
| 1290 | |
| 1291 | |
| 1292 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1293 JVMWrapper("JVM_GetStackAccessControlContext"); | |
| 1294 if (!UsePrivilegedStack) return NULL; | |
| 1295 | |
| 1296 ResourceMark rm(THREAD); | |
| 1297 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
| 1298 JvmtiVMObjectAllocEventCollector oam; | |
| 1299 | |
| 1300 // count the protection domains on the execution stack. We collapse | |
| 1301 // duplicate consecutive protection domains into a single one, as | |
| 1302 // well as stopping when we hit a privileged frame. | |
| 1303 | |
| 1304 // Use vframeStream to iterate through Java frames | |
| 1305 vframeStream vfst(thread); | |
| 1306 | |
| 1307 oop previous_protection_domain = NULL; | |
| 1308 Handle privileged_context(thread, NULL); | |
| 1309 bool is_privileged = false; | |
| 1310 oop protection_domain = NULL; | |
| 1311 | |
| 1312 for(; !vfst.at_end(); vfst.next()) { | |
| 1313 // get method of frame | |
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1314 Method* method = vfst.method(); |
| 0 | 1315 intptr_t* frame_id = vfst.frame_id(); |
| 1316 | |
| 1317 // check the privileged frames to see if we have a match | |
| 1318 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
| 1319 // this frame is privileged | |
| 1320 is_privileged = true; | |
| 1321 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
| 1322 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
| 1323 } else { | |
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1324 protection_domain = method->method_holder()->protection_domain(); |
| 0 | 1325 } |
| 1326 | |
| 1327 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
| 1328 local_array->push(protection_domain); | |
| 1329 previous_protection_domain = protection_domain; | |
| 1330 } | |
| 1331 | |
| 1332 if (is_privileged) break; | |
| 1333 } | |
| 1334 | |
| 1335 | |
| 1336 // either all the domains on the stack were system domains, or | |
| 1337 // we had a privileged system domain | |
| 1338 if (local_array->is_empty()) { | |
| 1339 if (is_privileged && privileged_context.is_null()) return NULL; | |
| 1340 | |
| 1341 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
| 1342 return JNIHandles::make_local(env, result); | |
| 1343 } | |
| 1344 | |
| 1345 // the resource area must be registered in case of a gc | |
| 1346 RegisterArrayForGC ragc(thread, local_array); | |
| 1142 | 1347 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
| 0 | 1348 local_array->length(), CHECK_NULL); |
| 1349 objArrayHandle h_context(thread, context); | |
| 1350 for (int index = 0; index < local_array->length(); index++) { | |
| 1351 h_context->obj_at_put(index, local_array->at(index)); | |
| 1352 } | |
| 1353 | |
| 1354 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
| 1355 | |
| 1356 return JNIHandles::make_local(env, result); | |
| 1357 JVM_END | |
| 1358 | |
| 1359 | |
| 1360 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
| 1361 JVMWrapper("JVM_IsArrayClass"); | |
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1362 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1363 return (k != NULL) && k->oop_is_array() ? true : false; |
| 0 | 1364 JVM_END |
| 1365 | |
| 1366 | |
| 1367 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
| 1368 JVMWrapper("JVM_IsPrimitiveClass"); | |
| 1369 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1370 return (jboolean) java_lang_Class::is_primitive(mirror); | |
| 1371 JVM_END | |
| 1372 | |
| 1373 | |
| 1374 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
| 1375 JVMWrapper("JVM_GetComponentType"); | |
| 1376 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1377 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
| 1378 return (jclass) JNIHandles::make_local(env, result); | |
| 1379 JVM_END | |
| 1380 | |
| 1381 | |
| 1382 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
| 1383 JVMWrapper("JVM_GetClassModifiers"); | |
| 1384 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1385 // Primitive type | |
| 1386 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 1387 } | |
| 1388 | |
| 6983 | 1389 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 1390 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); |
| 1391 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
| 1392 return k->modifier_flags(); | |
| 1393 JVM_END | |
| 1394 | |
| 1395 | |
| 1396 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
| 1397 | |
| 1398 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
| 1399 JvmtiVMObjectAllocEventCollector oam; | |
| 1400 // ofClass is a reference to a java_lang_Class object. The mirror object | |
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1401 // of an InstanceKlass |
| 0 | 1402 |
| 1403 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1404 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
| 1142 | 1405 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1406 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1407 } | |
| 1408 | |
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1409 instanceKlassHandle k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
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1410 InnerClassesIterator iter(k); |
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1411 |
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1412 if (iter.length() == 0) { |
| 0 | 1413 // Neither an inner nor outer class |
| 1142 | 1414 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1415 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1416 } | |
| 1417 | |
| 1418 // find inner class info | |
| 1419 constantPoolHandle cp(thread, k->constants()); | |
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1420 int length = iter.length(); |
| 0 | 1421 |
| 1422 // Allocate temp. result array | |
| 1142 | 1423 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
| 0 | 1424 objArrayHandle result (THREAD, r); |
| 1425 int members = 0; | |
| 1426 | |
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1427 for (; !iter.done(); iter.next()) { |
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1428 int ioff = iter.inner_class_info_index(); |
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1429 int ooff = iter.outer_class_info_index(); |
| 0 | 1430 |
| 1431 if (ioff != 0 && ooff != 0) { | |
| 1432 // Check to see if the name matches the class we're looking for | |
| 1433 // before attempting to find the class. | |
| 1434 if (cp->klass_name_at_matches(k, ooff)) { | |
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1435 Klass* outer_klass = cp->klass_at(ooff, CHECK_NULL); |
| 0 | 1436 if (outer_klass == k()) { |
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1437 Klass* ik = cp->klass_at(ioff, CHECK_NULL); |
| 0 | 1438 instanceKlassHandle inner_klass (THREAD, ik); |
| 1439 | |
| 1440 // Throws an exception if outer klass has not declared k as | |
| 1441 // an inner klass | |
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1442 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
| 0 | 1443 |
| 1444 result->obj_at_put(members, inner_klass->java_mirror()); | |
| 1445 members++; | |
| 1446 } | |
| 1447 } | |
| 1448 } | |
| 1449 } | |
| 1450 | |
| 1451 if (members != length) { | |
| 1452 // Return array of right length | |
| 1142 | 1453 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
| 0 | 1454 for(int i = 0; i < members; i++) { |
| 1455 res->obj_at_put(i, result->obj_at(i)); | |
| 1456 } | |
| 1457 return (jobjectArray)JNIHandles::make_local(env, res); | |
| 1458 } | |
| 1459 | |
| 1460 return (jobjectArray)JNIHandles::make_local(env, result()); | |
| 1461 JVM_END | |
| 1462 | |
| 1463 | |
| 1464 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
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1465 { |
| 0 | 1466 // ofClass is a reference to a java_lang_Class object. |
| 1467 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1468 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
| 0 | 1469 return NULL; |
| 1470 } | |
| 1471 | |
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1472 bool inner_is_member = false; |
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1473 Klass* outer_klass |
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1474 = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)) |
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1475 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
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1476 if (outer_klass == NULL) return NULL; // already a top-level class |
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1477 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
| 6983 | 1478 return (jclass) JNIHandles::make_local(env, outer_klass->java_mirror()); |
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1479 } |
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1480 JVM_END |
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1481 |
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1482 // should be in InstanceKlass.cpp, but is here for historical reasons |
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1483 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
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1484 bool* inner_is_member, |
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1485 TRAPS) { |
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1486 Thread* thread = THREAD; |
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1487 InnerClassesIterator iter(k); |
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1488 if (iter.length() == 0) { |
| 0 | 1489 // No inner class info => no declaring class |
| 1490 return NULL; | |
| 1491 } | |
| 1492 | |
| 1493 constantPoolHandle i_cp(thread, k->constants()); | |
| 1494 | |
| 1495 bool found = false; | |
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1496 Klass* ok; |
| 0 | 1497 instanceKlassHandle outer_klass; |
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1498 *inner_is_member = false; |
| 0 | 1499 |
| 1500 // Find inner_klass attribute | |
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1501 for (; !iter.done() && !found; iter.next()) { |
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1502 int ioff = iter.inner_class_info_index(); |
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1503 int ooff = iter.outer_class_info_index(); |
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1504 int noff = iter.inner_name_index(); |
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1505 if (ioff != 0) { |
| 0 | 1506 // Check to see if the name matches the class we're looking for |
| 1507 // before attempting to find the class. | |
| 1508 if (i_cp->klass_name_at_matches(k, ioff)) { | |
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1509 Klass* inner_klass = i_cp->klass_at(ioff, CHECK_NULL); |
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1510 found = (k() == inner_klass); |
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1511 if (found && ooff != 0) { |
| 0 | 1512 ok = i_cp->klass_at(ooff, CHECK_NULL); |
| 1513 outer_klass = instanceKlassHandle(thread, ok); | |
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1514 *inner_is_member = true; |
| 0 | 1515 } |
| 1516 } | |
| 1517 } | |
| 1518 } | |
| 1519 | |
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1520 if (found && outer_klass.is_null()) { |
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1521 // It may be anonymous; try for that. |
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1522 int encl_method_class_idx = k->enclosing_method_class_index(); |
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1523 if (encl_method_class_idx != 0) { |
|
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|
1524 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
|
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|
1525 outer_klass = instanceKlassHandle(thread, ok); |
|
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|
1526 *inner_is_member = false; |
|
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|
1527 } |
|
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|
1528 } |
|
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|
1529 |
| 0 | 1530 // If no inner class attribute found for this class. |
|
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|
1531 if (outer_klass.is_null()) return NULL; |
| 0 | 1532 |
| 1533 // Throws an exception if outer klass has not declared k as an inner klass | |
|
665
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|
1534 // We need evidence that each klass knows about the other, or else |
|
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|
1535 // the system could allow a spoof of an inner class to gain access rights. |
|
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|
1536 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
|
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|
1537 return outer_klass(); |
|
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|
1538 } |
| 0 | 1539 |
| 1540 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
| 1541 assert (cls != NULL, "illegal class"); | |
| 1542 JVMWrapper("JVM_GetClassSignature"); | |
| 1543 JvmtiVMObjectAllocEventCollector oam; | |
| 1544 ResourceMark rm(THREAD); | |
| 1545 // Return null for arrays and primatives | |
| 1546 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
|
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|
1547 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 6983 | 1548 if (k->oop_is_instance()) { |
|
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|
1549 Symbol* sym = InstanceKlass::cast(k)->generic_signature(); |
|
2177
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diff
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|
1550 if (sym == NULL) return NULL; |
| 0 | 1551 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 1552 return (jstring) JNIHandles::make_local(env, str()); | |
| 1553 } | |
| 1554 } | |
| 1555 return NULL; | |
| 1556 JVM_END | |
| 1557 | |
| 1558 | |
| 1559 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
| 1560 assert (cls != NULL, "illegal class"); | |
| 1561 JVMWrapper("JVM_GetClassAnnotations"); | |
|
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|
1562 |
| 0 | 1563 // Return null for arrays and primitives |
| 1564 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
|
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|
1565 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 6983 | 1566 if (k->oop_is_instance()) { |
|
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|
1567 typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->class_annotations(), CHECK_NULL); |
|
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|
1568 return (jbyteArray) JNIHandles::make_local(env, a); |
| 0 | 1569 } |
| 1570 } | |
| 1571 return NULL; | |
| 1572 JVM_END | |
| 1573 | |
| 1574 | |
|
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|
1575 static bool jvm_get_field_common(jobject field, fieldDescriptor& fd, TRAPS) { |
| 0 | 1576 // some of this code was adapted from from jni_FromReflectedField |
| 1577 | |
| 1578 oop reflected = JNIHandles::resolve_non_null(field); | |
| 1579 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
|
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|
1580 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 1581 int slot = java_lang_reflect_Field::slot(reflected); |
| 1582 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
| 1583 | |
| 1584 KlassHandle kh(THREAD, k); | |
|
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|
1585 intptr_t offset = InstanceKlass::cast(kh())->field_offset(slot); |
| 0 | 1586 |
| 1587 if (modifiers & JVM_ACC_STATIC) { | |
| 1588 // for static fields we only look in the current class | |
|
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|
1589 if (!InstanceKlass::cast(kh())->find_local_field_from_offset(offset, true, &fd)) { |
| 0 | 1590 assert(false, "cannot find static field"); |
|
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|
1591 return false; |
| 0 | 1592 } |
| 1593 } else { | |
| 1594 // for instance fields we start with the current class and work | |
| 1595 // our way up through the superclass chain | |
|
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|
1596 if (!InstanceKlass::cast(kh())->find_field_from_offset(offset, false, &fd)) { |
| 0 | 1597 assert(false, "cannot find instance field"); |
|
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|
1598 return false; |
| 0 | 1599 } |
| 1600 } | |
|
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|
1601 return true; |
|
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|
1602 } |
|
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|
1603 |
|
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|
1604 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) |
|
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|
1605 // field is a handle to a java.lang.reflect.Field object |
|
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|
1606 assert(field != NULL, "illegal field"); |
|
1916ca1dec2f
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changeset
|
1607 JVMWrapper("JVM_GetFieldAnnotations"); |
|
1916ca1dec2f
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|
1608 |
|
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|
1609 fieldDescriptor fd; |
|
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|
1610 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
|
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changeset
|
1611 if (!gotFd) { |
|
1916ca1dec2f
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changeset
|
1612 return NULL; |
|
1916ca1dec2f
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changeset
|
1613 } |
| 0 | 1614 |
|
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|
1615 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.annotations(), THREAD)); |
| 0 | 1616 JVM_END |
| 1617 | |
| 1618 | |
|
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|
1619 static Method* jvm_get_method_common(jobject method) { |
| 0 | 1620 // some of this code was adapted from from jni_FromReflectedMethod |
| 1621 | |
| 1622 oop reflected = JNIHandles::resolve_non_null(method); | |
| 1623 oop mirror = NULL; | |
| 1624 int slot = 0; | |
| 1625 | |
| 1142 | 1626 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
| 0 | 1627 mirror = java_lang_reflect_Constructor::clazz(reflected); |
| 1628 slot = java_lang_reflect_Constructor::slot(reflected); | |
| 1629 } else { | |
| 1142 | 1630 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
| 0 | 1631 "wrong type"); |
| 1632 mirror = java_lang_reflect_Method::clazz(reflected); | |
| 1633 slot = java_lang_reflect_Method::slot(reflected); | |
| 1634 } | |
|
6725
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|
1635 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 1636 |
|
7462
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changeset
|
1637 Method* m = InstanceKlass::cast(k)->method_with_idnum(slot); |
|
8818
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changeset
|
1638 assert(m != NULL, "cannot find method"); |
|
1916ca1dec2f
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diff
changeset
|
1639 return m; // caller has to deal with NULL in product mode |
| 0 | 1640 } |
| 1641 | |
| 1642 | |
| 1643 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
| 1644 JVMWrapper("JVM_GetMethodAnnotations"); | |
| 1645 | |
| 1646 // method is a handle to a java.lang.reflect.Method object | |
|
7462
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|
1647 Method* m = jvm_get_method_common(method); |
|
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changeset
|
1648 if (m == NULL) { |
|
1916ca1dec2f
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diff
changeset
|
1649 return NULL; |
|
1916ca1dec2f
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8805
diff
changeset
|
1650 } |
|
1916ca1dec2f
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diff
changeset
|
1651 |
|
6725
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changeset
|
1652 return (jbyteArray) JNIHandles::make_local(env, |
|
da91efe96a93
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changeset
|
1653 Annotations::make_java_array(m->annotations(), THREAD)); |
| 0 | 1654 JVM_END |
| 1655 | |
| 1656 | |
| 1657 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
| 1658 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
| 1659 | |
| 1660 // method is a handle to a java.lang.reflect.Method object | |
|
7462
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changeset
|
1661 Method* m = jvm_get_method_common(method); |
|
8818
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diff
changeset
|
1662 if (m == NULL) { |
|
1916ca1dec2f
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diff
changeset
|
1663 return NULL; |
|
1916ca1dec2f
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parents:
8805
diff
changeset
|
1664 } |
|
1916ca1dec2f
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diff
changeset
|
1665 |
|
6725
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changeset
|
1666 return (jbyteArray) JNIHandles::make_local(env, |
|
da91efe96a93
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changeset
|
1667 Annotations::make_java_array(m->annotation_default(), THREAD)); |
| 0 | 1668 JVM_END |
| 1669 | |
| 1670 | |
| 1671 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
| 1672 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
| 1673 | |
| 1674 // method is a handle to a java.lang.reflect.Method object | |
|
7462
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changeset
|
1675 Method* m = jvm_get_method_common(method); |
|
8818
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changeset
|
1676 if (m == NULL) { |
|
1916ca1dec2f
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diff
changeset
|
1677 return NULL; |
|
1916ca1dec2f
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8805
diff
changeset
|
1678 } |
|
1916ca1dec2f
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diff
changeset
|
1679 |
|
6725
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changeset
|
1680 return (jbyteArray) JNIHandles::make_local(env, |
|
da91efe96a93
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|
1681 Annotations::make_java_array(m->parameter_annotations(), THREAD)); |
| 0 | 1682 JVM_END |
| 1683 | |
|
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changeset
|
1684 /* Type use annotations support (JDK 1.8) */ |
|
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|
1685 |
|
35431a769282
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changeset
|
1686 JVM_ENTRY(jbyteArray, JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls)) |
|
35431a769282
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changeset
|
1687 assert (cls != NULL, "illegal class"); |
|
35431a769282
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changeset
|
1688 JVMWrapper("JVM_GetClassTypeAnnotations"); |
|
35431a769282
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changeset
|
1689 ResourceMark rm(THREAD); |
|
35431a769282
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changeset
|
1690 // Return null for arrays and primitives |
|
35431a769282
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changeset
|
1691 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
|
35431a769282
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changeset
|
1692 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
|
35431a769282
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|
1693 if (k->oop_is_instance()) { |
| 8031 | 1694 AnnotationArray* type_annotations = InstanceKlass::cast(k)->class_type_annotations(); |
|
7611
ff0a7943fd29
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changeset
|
1695 if (type_annotations != NULL) { |
| 8031 | 1696 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
|
7611
ff0a7943fd29
8005994: Method annotations are allocated unnecessarily during class file parsing
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changeset
|
1697 return (jbyteArray) JNIHandles::make_local(env, a); |
|
ff0a7943fd29
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changeset
|
1698 } |
|
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|
1699 } |
|
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changeset
|
1700 } |
|
35431a769282
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changeset
|
1701 return NULL; |
|
35431a769282
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changeset
|
1702 JVM_END |
|
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|
1703 |
|
8818
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changeset
|
1704 JVM_ENTRY(jbyteArray, JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method)) |
|
1916ca1dec2f
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changeset
|
1705 assert (method != NULL, "illegal method"); |
|
1916ca1dec2f
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changeset
|
1706 JVMWrapper("JVM_GetMethodTypeAnnotations"); |
|
1916ca1dec2f
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changeset
|
1707 |
|
1916ca1dec2f
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changeset
|
1708 // method is a handle to a java.lang.reflect.Method object |
|
1916ca1dec2f
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changeset
|
1709 Method* m = jvm_get_method_common(method); |
|
1916ca1dec2f
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diff
changeset
|
1710 if (m == NULL) { |
|
1916ca1dec2f
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diff
changeset
|
1711 return NULL; |
|
1916ca1dec2f
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diff
changeset
|
1712 } |
|
1916ca1dec2f
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changeset
|
1713 |
|
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|
1714 AnnotationArray* type_annotations = m->type_annotations(); |
|
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|
1715 if (type_annotations != NULL) { |
|
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|
1716 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
|
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|
1717 return (jbyteArray) JNIHandles::make_local(env, a); |
|
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|
1718 } |
|
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|
1719 |
|
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|
1720 return NULL; |
|
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|
1721 JVM_END |
|
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|
1722 |
|
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|
1723 JVM_ENTRY(jbyteArray, JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field)) |
|
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|
1724 assert (field != NULL, "illegal field"); |
|
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|
1725 JVMWrapper("JVM_GetFieldTypeAnnotations"); |
|
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|
1726 |
|
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|
1727 fieldDescriptor fd; |
|
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|
1728 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
|
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|
1729 if (!gotFd) { |
|
1916ca1dec2f
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|
1730 return NULL; |
|
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|
1731 } |
|
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|
1732 |
|
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changeset
|
1733 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.type_annotations(), THREAD)); |
|
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|
1734 JVM_END |
|
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|
1735 |
|
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|
1736 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { |
|
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|
1737 if (!cp->is_within_bounds(index)) { |
|
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|
1738 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); |
|
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|
1739 } |
|
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|
1740 } |
|
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|
1741 |
|
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|
1742 JVM_ENTRY(jobjectArray, JVM_GetMethodParameters(JNIEnv *env, jobject method)) |
|
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|
1743 { |
|
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|
1744 JVMWrapper("JVM_GetMethodParameters"); |
|
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|
1745 // method is a handle to a java.lang.reflect.Method object |
|
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|
1746 Method* method_ptr = jvm_get_method_common(method); |
|
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|
1747 methodHandle mh (THREAD, method_ptr); |
|
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|
1748 Handle reflected_method (THREAD, JNIHandles::resolve_non_null(method)); |
|
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|
1749 const int num_params = mh->method_parameters_length(); |
|
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|
1750 |
|
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|
1751 if (0 != num_params) { |
|
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|
1752 // make sure all the symbols are properly formatted |
|
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|
1753 for (int i = 0; i < num_params; i++) { |
|
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|
1754 MethodParametersElement* params = mh->method_parameters_start(); |
|
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|
1755 int index = params[i].name_cp_index; |
|
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|
1756 bounds_check(mh->constants(), index, CHECK_NULL); |
|
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|
1757 |
|
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|
1758 if (0 != index && !mh->constants()->tag_at(index).is_utf8()) { |
|
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|
1759 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), |
|
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|
1760 "Wrong type at constant pool index"); |
|
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|
1761 } |
|
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|
1762 |
|
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|
1763 } |
|
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|
1764 |
|
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|
1765 objArrayOop result_oop = oopFactory::new_objArray(SystemDictionary::reflect_Parameter_klass(), num_params, CHECK_NULL); |
|
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|
1766 objArrayHandle result (THREAD, result_oop); |
|
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|
1767 |
|
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|
1768 for (int i = 0; i < num_params; i++) { |
|
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|
1769 MethodParametersElement* params = mh->method_parameters_start(); |
|
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|
1770 // For a 0 index, give a NULL symbol |
|
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8003557: NPG: Klass* const k should be const Klass* k.
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|
1771 Symbol* sym = 0 != params[i].name_cp_index ? |
|
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|
1772 mh->constants()->symbol_at(params[i].name_cp_index) : NULL; |
|
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8006949: Update hotspot for MethodParameters format change
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|
1773 int flags = params[i].flags; |
|
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|
1774 oop param = Reflection::new_parameter(reflected_method, i, sym, |
|
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|
1775 flags, CHECK_NULL); |
|
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|
1776 result->obj_at_put(i, param); |
|
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|
1777 } |
|
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|
1778 return (jobjectArray)JNIHandles::make_local(env, result()); |
|
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|
1779 } else { |
|
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|
1780 return (jobjectArray)NULL; |
|
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|
1781 } |
|
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|
1782 } |
|
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|
1783 JVM_END |
| 0 | 1784 |
| 1785 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
| 1786 | |
| 1787 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1788 { | |
| 1789 JVMWrapper("JVM_GetClassDeclaredFields"); | |
| 1790 JvmtiVMObjectAllocEventCollector oam; | |
| 1791 | |
| 1792 // Exclude primitive types and array types | |
| 1793 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1794 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
| 0 | 1795 // Return empty array |
| 1142 | 1796 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
| 0 | 1797 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1798 } | |
| 1799 | |
|
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1800 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
| 0 | 1801 constantPoolHandle cp(THREAD, k->constants()); |
| 1802 | |
| 1803 // Ensure class is linked | |
| 1804 k->link_class(CHECK_NULL); | |
| 1805 | |
| 1806 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
| 1807 bool skip_backtrace = false; | |
| 1808 | |
| 1809 // Allocate result | |
| 1810 int num_fields; | |
| 1811 | |
| 1812 if (publicOnly) { | |
| 1813 num_fields = 0; | |
| 3938 | 1814 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
| 1815 if (fs.access_flags().is_public()) ++num_fields; | |
| 0 | 1816 } |
| 1817 } else { | |
| 3938 | 1818 num_fields = k->java_fields_count(); |
| 0 | 1819 |
| 1142 | 1820 if (k() == SystemDictionary::Throwable_klass()) { |
| 0 | 1821 num_fields--; |
| 1822 skip_backtrace = true; | |
| 1823 } | |
| 1824 } | |
| 1825 | |
| 1142 | 1826 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
| 0 | 1827 objArrayHandle result (THREAD, r); |
| 1828 | |
| 1829 int out_idx = 0; | |
| 1830 fieldDescriptor fd; | |
| 3938 | 1831 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
| 0 | 1832 if (skip_backtrace) { |
| 1833 // 4496456 skip java.lang.Throwable.backtrace | |
| 3938 | 1834 int offset = fs.offset(); |
| 0 | 1835 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
| 1836 } | |
| 1837 | |
| 3938 | 1838 if (!publicOnly || fs.access_flags().is_public()) { |
|
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|
1839 fd.reinitialize(k(), fs.index()); |
| 0 | 1840 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
| 1841 result->obj_at_put(out_idx, field); | |
| 1842 ++out_idx; | |
| 1843 } | |
| 1844 } | |
| 1845 assert(out_idx == num_fields, "just checking"); | |
| 1846 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1847 } | |
| 1848 JVM_END | |
| 1849 | |
|
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|
1850 static bool select_method(methodHandle method, bool want_constructor) { |
|
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|
1851 if (want_constructor) { |
|
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|
1852 return (method->is_initializer() && !method->is_static()); |
|
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|
1853 } else { |
|
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|
1854 return (!method->is_initializer() && !method->is_overpass()); |
|
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|
1855 } |
|
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|
1856 } |
|
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|
1857 |
|
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|
1858 static jobjectArray get_class_declared_methods_helper( |
|
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|
1859 JNIEnv *env, |
|
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|
1860 jclass ofClass, jboolean publicOnly, |
|
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|
1861 bool want_constructor, |
|
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|
1862 Klass* klass, TRAPS) { |
|
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|
1863 |
| 0 | 1864 JvmtiVMObjectAllocEventCollector oam; |
| 1865 | |
| 1866 // Exclude primitive types and array types | |
| 1867 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
| 6983 | 1868 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
| 0 | 1869 // Return empty array |
|
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|
1870 oop res = oopFactory::new_objArray(klass, 0, CHECK_NULL); |
| 0 | 1871 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1872 } | |
| 1873 | |
|
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1874 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
| 0 | 1875 |
| 1876 // Ensure class is linked | |
| 1877 k->link_class(CHECK_NULL); | |
| 1878 | |
|
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1879 Array<Method*>* methods = k->methods(); |
| 0 | 1880 int methods_length = methods->length(); |
|
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|
1881 |
|
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|
1882 // Save original method_idnum in case of redefinition, which can change |
|
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|
1883 // the idnum of obsolete methods. The new method will have the same idnum |
|
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|
1884 // but if we refresh the methods array, the counts will be wrong. |
|
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|
1885 ResourceMark rm(THREAD); |
|
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|
1886 GrowableArray<int>* idnums = new GrowableArray<int>(methods_length); |
| 0 | 1887 int num_methods = 0; |
| 1888 | |
|
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|
1889 for (int i = 0; i < methods_length; i++) { |
|
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|
1890 methodHandle method(THREAD, methods->at(i)); |
|
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1891 if (select_method(method, want_constructor)) { |
| 0 | 1892 if (!publicOnly || method->is_public()) { |
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1893 idnums->push(method->method_idnum()); |
| 0 | 1894 ++num_methods; |
| 1895 } | |
| 1896 } | |
| 1897 } | |
| 1898 | |
| 1899 // Allocate result | |
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1900 objArrayOop r = oopFactory::new_objArray(klass, num_methods, CHECK_NULL); |
| 0 | 1901 objArrayHandle result (THREAD, r); |
| 1902 | |
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1903 // Now just put the methods that we selected above, but go by their idnum |
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1904 // in case of redefinition. The methods can be redefined at any safepoint, |
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1905 // so above when allocating the oop array and below when creating reflect |
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1906 // objects. |
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1907 for (int i = 0; i < num_methods; i++) { |
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1908 methodHandle method(THREAD, k->method_with_idnum(idnums->at(i))); |
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1909 if (method.is_null()) { |
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1910 // Method may have been deleted and seems this API can handle null |
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1911 // Otherwise should probably put a method that throws NSME |
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1912 result->obj_at_put(i, NULL); |
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1913 } else { |
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1914 oop m; |
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1915 if (want_constructor) { |
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1916 m = Reflection::new_constructor(method, CHECK_NULL); |
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1917 } else { |
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1918 m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); |
| 0 | 1919 } |
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1920 result->obj_at_put(i, m); |
| 0 | 1921 } |
| 1922 } | |
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1923 |
| 0 | 1924 return (jobjectArray) JNIHandles::make_local(env, result()); |
| 1925 } | |
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1926 |
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1927 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) |
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1928 { |
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1929 JVMWrapper("JVM_GetClassDeclaredMethods"); |
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1930 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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1931 /*want_constructor*/ false, |
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1932 SystemDictionary::reflect_Method_klass(), THREAD); |
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1933 } |
| 0 | 1934 JVM_END |
| 1935 | |
| 1936 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1937 { | |
| 1938 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
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1939 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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1940 /*want_constructor*/ true, |
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1941 SystemDictionary::reflect_Constructor_klass(), THREAD); |
| 0 | 1942 } |
| 1943 JVM_END | |
| 1944 | |
| 1945 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
| 1946 { | |
| 1947 JVMWrapper("JVM_GetClassAccessFlags"); | |
| 1948 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1949 // Primitive type | |
| 1950 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 1951 } | |
| 1952 | |
| 6983 | 1953 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 1954 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; |
| 1955 } | |
| 1956 JVM_END | |
| 1957 | |
| 1958 | |
| 1959 // Constant pool access ////////////////////////////////////////////////////////// | |
| 1960 | |
| 1961 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
| 1962 { | |
| 1963 JVMWrapper("JVM_GetClassConstantPool"); | |
| 1964 JvmtiVMObjectAllocEventCollector oam; | |
| 1965 | |
| 1966 // Return null for primitives and arrays | |
| 1967 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
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1968 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1969 if (k->oop_is_instance()) { |
| 0 | 1970 instanceKlassHandle k_h(THREAD, k); |
| 1971 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
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1972 sun_reflect_ConstantPool::set_cp(jcp(), k_h->constants()); |
| 0 | 1973 return JNIHandles::make_local(jcp()); |
| 1974 } | |
| 1975 } | |
| 1976 return NULL; | |
| 1977 } | |
| 1978 JVM_END | |
| 1979 | |
| 1980 | |
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1981 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject obj, jobject unused)) |
| 0 | 1982 { |
| 1983 JVMWrapper("JVM_ConstantPoolGetSize"); | |
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1984 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1985 return cp->length(); |
| 1986 } | |
| 1987 JVM_END | |
| 1988 | |
| 1989 | |
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1990 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 1991 { |
| 1992 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
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1993 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1994 bounds_check(cp, index, CHECK_NULL); |
| 1995 constantTag tag = cp->tag_at(index); | |
| 1996 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 1997 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1998 } | |
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1999 Klass* k = cp->klass_at(index, CHECK_NULL); |
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2000 return (jclass) JNIHandles::make_local(k->java_mirror()); |
| 0 | 2001 } |
| 2002 JVM_END | |
| 2003 | |
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2004 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2005 { |
| 2006 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
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2007 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2008 bounds_check(cp, index, CHECK_NULL); |
| 2009 constantTag tag = cp->tag_at(index); | |
| 2010 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 2011 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2012 } | |
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2013 Klass* k = ConstantPool::klass_at_if_loaded(cp, index); |
| 0 | 2014 if (k == NULL) return NULL; |
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2015 return (jclass) JNIHandles::make_local(k->java_mirror()); |
| 0 | 2016 } |
| 2017 JVM_END | |
| 2018 | |
| 2019 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 2020 constantTag tag = cp->tag_at(index); | |
| 2021 if (!tag.is_method() && !tag.is_interface_method()) { | |
| 2022 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2023 } | |
| 2024 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2025 Klass* k_o; |
| 0 | 2026 if (force_resolution) { |
| 2027 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 2028 } else { | |
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2029 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
| 0 | 2030 if (k_o == NULL) return NULL; |
| 2031 } | |
| 2032 instanceKlassHandle k(THREAD, k_o); | |
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2033 Symbol* name = cp->uncached_name_ref_at(index); |
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2034 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 2035 methodHandle m (THREAD, k->find_method(name, sig)); |
| 2036 if (m.is_null()) { | |
| 2037 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
| 2038 } | |
| 2039 oop method; | |
| 2040 if (!m->is_initializer() || m->is_static()) { | |
| 2041 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
| 2042 } else { | |
| 2043 method = Reflection::new_constructor(m, CHECK_NULL); | |
| 2044 } | |
| 2045 return JNIHandles::make_local(method); | |
| 2046 } | |
| 2047 | |
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2048 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2049 { |
| 2050 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
| 2051 JvmtiVMObjectAllocEventCollector oam; | |
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2052 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2053 bounds_check(cp, index, CHECK_NULL); |
| 2054 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
| 2055 return res; | |
| 2056 } | |
| 2057 JVM_END | |
| 2058 | |
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2059 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2060 { |
| 2061 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
| 2062 JvmtiVMObjectAllocEventCollector oam; | |
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2063 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2064 bounds_check(cp, index, CHECK_NULL); |
| 2065 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
| 2066 return res; | |
| 2067 } | |
| 2068 JVM_END | |
| 2069 | |
| 2070 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 2071 constantTag tag = cp->tag_at(index); | |
| 2072 if (!tag.is_field()) { | |
| 2073 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2074 } | |
| 2075 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2076 Klass* k_o; |
| 0 | 2077 if (force_resolution) { |
| 2078 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 2079 } else { | |
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2080 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
| 0 | 2081 if (k_o == NULL) return NULL; |
| 2082 } | |
| 2083 instanceKlassHandle k(THREAD, k_o); | |
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2084 Symbol* name = cp->uncached_name_ref_at(index); |
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2085 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 2086 fieldDescriptor fd; |
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2087 Klass* target_klass = k->find_field(name, sig, &fd); |
| 0 | 2088 if (target_klass == NULL) { |
| 2089 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
| 2090 } | |
| 2091 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
| 2092 return JNIHandles::make_local(field); | |
| 2093 } | |
| 2094 | |
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2095 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject obj, jobject unusedl, jint index)) |
| 0 | 2096 { |
| 2097 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
| 2098 JvmtiVMObjectAllocEventCollector oam; | |
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2099 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2100 bounds_check(cp, index, CHECK_NULL); |
| 2101 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
| 2102 return res; | |
| 2103 } | |
| 2104 JVM_END | |
| 2105 | |
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2106 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2107 { |
| 2108 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
| 2109 JvmtiVMObjectAllocEventCollector oam; | |
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2110 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2111 bounds_check(cp, index, CHECK_NULL); |
| 2112 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
| 2113 return res; | |
| 2114 } | |
| 2115 JVM_END | |
| 2116 | |
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2117 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2118 { |
| 2119 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
| 2120 JvmtiVMObjectAllocEventCollector oam; | |
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2121 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2122 bounds_check(cp, index, CHECK_NULL); |
| 2123 constantTag tag = cp->tag_at(index); | |
| 2124 if (!tag.is_field_or_method()) { | |
| 2125 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2126 } | |
| 2127 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2128 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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2129 Symbol* member_name = cp->uncached_name_ref_at(index); |
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2130 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
| 1142 | 2131 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
| 0 | 2132 objArrayHandle dest(THREAD, dest_o); |
| 2133 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
| 2134 dest->obj_at_put(0, str()); | |
| 2135 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
| 2136 dest->obj_at_put(1, str()); | |
| 2137 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
| 2138 dest->obj_at_put(2, str()); | |
| 2139 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 2140 } | |
| 2141 JVM_END | |
| 2142 | |
|
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2143 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2144 { |
| 2145 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
|
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2146 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2147 bounds_check(cp, index, CHECK_0); |
| 2148 constantTag tag = cp->tag_at(index); | |
| 2149 if (!tag.is_int()) { | |
| 2150 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2151 } | |
| 2152 return cp->int_at(index); | |
| 2153 } | |
| 2154 JVM_END | |
| 2155 | |
|
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2156 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2157 { |
| 2158 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
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2159 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2160 bounds_check(cp, index, CHECK_(0L)); |
| 2161 constantTag tag = cp->tag_at(index); | |
| 2162 if (!tag.is_long()) { | |
| 2163 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2164 } | |
| 2165 return cp->long_at(index); | |
| 2166 } | |
| 2167 JVM_END | |
| 2168 | |
|
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2169 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2170 { |
| 2171 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
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2172 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2173 bounds_check(cp, index, CHECK_(0.0f)); |
| 2174 constantTag tag = cp->tag_at(index); | |
| 2175 if (!tag.is_float()) { | |
| 2176 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2177 } | |
| 2178 return cp->float_at(index); | |
| 2179 } | |
| 2180 JVM_END | |
| 2181 | |
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2182 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2183 { |
| 2184 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
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2185 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2186 bounds_check(cp, index, CHECK_(0.0)); |
| 2187 constantTag tag = cp->tag_at(index); | |
| 2188 if (!tag.is_double()) { | |
| 2189 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2190 } | |
| 2191 return cp->double_at(index); | |
| 2192 } | |
| 2193 JVM_END | |
| 2194 | |
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2195 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2196 { |
| 2197 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
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2198 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2199 bounds_check(cp, index, CHECK_NULL); |
| 2200 constantTag tag = cp->tag_at(index); | |
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2201 if (!tag.is_string()) { |
| 0 | 2202 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
| 2203 } | |
| 2204 oop str = cp->string_at(index, CHECK_NULL); | |
| 2205 return (jstring) JNIHandles::make_local(str); | |
| 2206 } | |
| 2207 JVM_END | |
| 2208 | |
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2209 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2210 { |
| 2211 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
| 2212 JvmtiVMObjectAllocEventCollector oam; | |
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2213 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2214 bounds_check(cp, index, CHECK_NULL); |
| 2215 constantTag tag = cp->tag_at(index); | |
| 2216 if (!tag.is_symbol()) { | |
| 2217 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2218 } | |
|
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2219 Symbol* sym = cp->symbol_at(index); |
| 0 | 2220 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 2221 return (jstring) JNIHandles::make_local(str()); | |
| 2222 } | |
| 2223 JVM_END | |
| 2224 | |
| 2225 | |
| 2226 // Assertion support. ////////////////////////////////////////////////////////// | |
| 2227 | |
| 2228 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
| 2229 JVMWrapper("JVM_DesiredAssertionStatus"); | |
| 2230 assert(cls != NULL, "bad class"); | |
| 2231 | |
| 2232 oop r = JNIHandles::resolve(cls); | |
| 2233 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
| 2234 if (java_lang_Class::is_primitive(r)) return false; | |
| 2235 | |
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2236 Klass* k = java_lang_Class::as_Klass(r); |
| 6983 | 2237 assert(k->oop_is_instance(), "must be an instance klass"); |
| 2238 if (! k->oop_is_instance()) return false; | |
| 0 | 2239 |
| 2240 ResourceMark rm(THREAD); | |
| 6983 | 2241 const char* name = k->name()->as_C_string(); |
| 2242 bool system_class = k->class_loader() == NULL; | |
| 0 | 2243 return JavaAssertions::enabled(name, system_class); |
| 2244 | |
| 2245 JVM_END | |
| 2246 | |
| 2247 | |
| 2248 // Return a new AssertionStatusDirectives object with the fields filled in with | |
| 2249 // command-line assertion arguments (i.e., -ea, -da). | |
| 2250 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
| 2251 JVMWrapper("JVM_AssertionStatusDirectives"); | |
| 2252 JvmtiVMObjectAllocEventCollector oam; | |
| 2253 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
| 2254 return JNIHandles::make_local(env, asd); | |
| 2255 JVM_END | |
| 2256 | |
| 2257 // Verification //////////////////////////////////////////////////////////////////////////////// | |
| 2258 | |
| 2259 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
| 2260 | |
| 2261 // RedefineClasses support: bug 6214132 caused verification to fail. | |
| 2262 // All functions from this section should call the jvmtiThreadSate function: | |
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2263 // Klass* class_to_verify_considering_redefinition(Klass* klass). |
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2264 // The function returns a Klass* of the _scratch_class if the verifier |
| 0 | 2265 // was invoked in the middle of the class redefinition. |
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2266 // Otherwise it returns its argument value which is the _the_class Klass*. |
| 0 | 2267 // Please, refer to the description in the jvmtiThreadSate.hpp. |
| 2268 | |
| 2269 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
| 2270 JVMWrapper("JVM_GetClassNameUTF"); | |
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2271 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2272 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2273 return k->name()->as_utf8(); |
| 0 | 2274 JVM_END |
| 2275 | |
| 2276 | |
| 2277 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
| 2278 JVMWrapper("JVM_GetClassCPTypes"); | |
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2279 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2280 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2281 // types will have length zero if this is not an InstanceKlass |
| 0 | 2282 // (length is determined by call to JVM_GetClassCPEntriesCount) |
| 6983 | 2283 if (k->oop_is_instance()) { |
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2284 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2285 for (int index = cp->length() - 1; index >= 0; index--) { |
| 2286 constantTag tag = cp->tag_at(index); | |
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2287 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : tag.value(); |
| 0 | 2288 } |
| 2289 } | |
| 2290 JVM_END | |
| 2291 | |
| 2292 | |
| 2293 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
| 2294 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
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2295 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2296 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2297 if (!k->oop_is_instance()) |
| 0 | 2298 return 0; |
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2299 return InstanceKlass::cast(k)->constants()->length(); |
| 0 | 2300 JVM_END |
| 2301 | |
| 2302 | |
| 2303 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
| 2304 JVMWrapper("JVM_GetClassFieldsCount"); | |
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2305 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2306 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2307 if (!k->oop_is_instance()) |
| 0 | 2308 return 0; |
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2309 return InstanceKlass::cast(k)->java_fields_count(); |
| 0 | 2310 JVM_END |
| 2311 | |
| 2312 | |
| 2313 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
| 2314 JVMWrapper("JVM_GetClassMethodsCount"); | |
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2315 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2316 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2317 if (!k->oop_is_instance()) |
| 0 | 2318 return 0; |
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2319 return InstanceKlass::cast(k)->methods()->length(); |
| 0 | 2320 JVM_END |
| 2321 | |
| 2322 | |
| 2323 // The following methods, used for the verifier, are never called with | |
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2324 // array klasses, so a direct cast to InstanceKlass is safe. |
| 0 | 2325 // Typically, these methods are called in a loop with bounds determined |
| 2326 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
| 2327 // zero for arrays. | |
| 2328 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
| 2329 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
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2330 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2331 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2332 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2333 int length = method->checked_exceptions_length(); |
| 0 | 2334 if (length > 0) { |
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2335 CheckedExceptionElement* table= method->checked_exceptions_start(); |
| 0 | 2336 for (int i = 0; i < length; i++) { |
| 2337 exceptions[i] = table[i].class_cp_index; | |
| 2338 } | |
| 2339 } | |
| 2340 JVM_END | |
| 2341 | |
| 2342 | |
| 2343 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
| 2344 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
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2345 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2346 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2347 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2348 return method->checked_exceptions_length(); |
| 0 | 2349 JVM_END |
| 2350 | |
| 2351 | |
| 2352 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
| 2353 JVMWrapper("JVM_GetMethodIxByteCode"); | |
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2354 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2355 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2356 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2357 memcpy(code, method->code_base(), method->code_size()); |
| 0 | 2358 JVM_END |
| 2359 | |
| 2360 | |
| 2361 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
| 2362 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
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2363 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2364 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2365 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2366 return method->code_size(); |
| 0 | 2367 JVM_END |
| 2368 | |
| 2369 | |
| 2370 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
| 2371 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
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2372 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2373 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2374 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2375 ExceptionTable extable(method); |
|
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2376 entry->start_pc = extable.start_pc(entry_index); |
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2377 entry->end_pc = extable.end_pc(entry_index); |
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2378 entry->handler_pc = extable.handler_pc(entry_index); |
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2379 entry->catchType = extable.catch_type_index(entry_index); |
| 0 | 2380 JVM_END |
| 2381 | |
| 2382 | |
| 2383 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
| 2384 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
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2385 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2386 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2387 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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2388 return method->exception_table_length(); |
| 0 | 2389 JVM_END |
| 2390 | |
| 2391 | |
| 2392 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
| 2393 JVMWrapper("JVM_GetMethodIxModifiers"); | |
|
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2394 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2395 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2396 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2397 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
| 0 | 2398 JVM_END |
| 2399 | |
| 2400 | |
| 2401 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
| 2402 JVMWrapper("JVM_GetFieldIxModifiers"); | |
|
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2403 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2404 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2405 return InstanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
| 0 | 2406 JVM_END |
| 2407 | |
| 2408 | |
| 2409 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
| 2410 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
|
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|
2411 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2412 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2413 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2414 return method->max_locals(); |
| 0 | 2415 JVM_END |
| 2416 | |
| 2417 | |
| 2418 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
| 2419 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
|
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|
2420 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2421 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2422 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2423 return method->size_of_parameters(); |
| 0 | 2424 JVM_END |
| 2425 | |
| 2426 | |
| 2427 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
| 2428 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
|
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|
2429 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2430 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2431 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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2432 return method->verifier_max_stack(); |
| 0 | 2433 JVM_END |
| 2434 | |
| 2435 | |
| 2436 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
| 2437 JVMWrapper("JVM_IsConstructorIx"); | |
| 2438 ResourceMark rm(THREAD); | |
|
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2439 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2440 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2441 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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2442 return method->name() == vmSymbols::object_initializer_name(); |
| 0 | 2443 JVM_END |
| 2444 | |
| 2445 | |
|
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|
2446 JVM_QUICK_ENTRY(jboolean, JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cls, int method_index)) |
|
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|
2447 JVMWrapper("JVM_IsVMGeneratedMethodIx"); |
|
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|
2448 ResourceMark rm(THREAD); |
|
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|
2449 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
|
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|
2450 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2451 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2452 return method->is_overpass(); |
|
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|
2453 JVM_END |
|
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|
2454 |
| 0 | 2455 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) |
| 2456 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
|
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2457 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2458 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2459 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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2460 return method->name()->as_utf8(); |
| 0 | 2461 JVM_END |
| 2462 | |
| 2463 | |
| 2464 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
| 2465 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
|
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|
2466 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2467 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2468 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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2469 return method->signature()->as_utf8(); |
| 0 | 2470 JVM_END |
| 2471 | |
| 2472 /** | |
| 2473 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
| 2474 * read entries in the constant pool. Since the old verifier always | |
| 2475 * works on a copy of the code, it will not see any rewriting that | |
| 2476 * may possibly occur in the middle of verification. So it is important | |
| 2477 * that nothing it calls tries to use the cpCache instead of the raw | |
| 2478 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
| 2479 */ | |
| 2480 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2481 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
|
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2482 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2483 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2484 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2485 switch (cp->tag_at(cp_index).value()) { |
| 2486 case JVM_CONSTANT_Fieldref: | |
| 2487 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
| 2488 default: | |
| 2489 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
| 2490 } | |
| 2491 ShouldNotReachHere(); | |
| 2492 return NULL; | |
| 2493 JVM_END | |
| 2494 | |
| 2495 | |
| 2496 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2497 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
|
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|
2498 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2499 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2500 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2501 switch (cp->tag_at(cp_index).value()) { |
| 2502 case JVM_CONSTANT_InterfaceMethodref: | |
| 2503 case JVM_CONSTANT_Methodref: | |
|
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|
2504 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2505 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
| 2506 default: | |
| 2507 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
| 2508 } | |
| 2509 ShouldNotReachHere(); | |
| 2510 return NULL; | |
| 2511 JVM_END | |
| 2512 | |
| 2513 | |
| 2514 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2515 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
|
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|
2516 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2517 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2518 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2519 switch (cp->tag_at(cp_index).value()) { |
| 2520 case JVM_CONSTANT_InterfaceMethodref: | |
| 2521 case JVM_CONSTANT_Methodref: | |
|
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|
2522 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2523 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
| 2524 default: | |
| 2525 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
| 2526 } | |
| 2527 ShouldNotReachHere(); | |
| 2528 return NULL; | |
| 2529 JVM_END | |
| 2530 | |
| 2531 | |
| 2532 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2533 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
|
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|
2534 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2535 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2536 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2537 switch (cp->tag_at(cp_index).value()) { |
| 2538 case JVM_CONSTANT_Fieldref: | |
| 2539 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
| 2540 default: | |
| 2541 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
| 2542 } | |
| 2543 ShouldNotReachHere(); | |
| 2544 return NULL; | |
| 2545 JVM_END | |
| 2546 | |
| 2547 | |
| 2548 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2549 JVMWrapper("JVM_GetCPClassNameUTF"); | |
|
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|
2550 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2551 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2552 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
|
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|
2553 Symbol* classname = cp->klass_name_at(cp_index); |
| 0 | 2554 return classname->as_utf8(); |
| 2555 JVM_END | |
| 2556 | |
| 2557 | |
| 2558 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2559 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
|
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|
2560 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2561 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2562 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2563 switch (cp->tag_at(cp_index).value()) { |
| 2564 case JVM_CONSTANT_Fieldref: { | |
| 2565 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
|
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|
2566 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2567 return classname->as_utf8(); |
| 2568 } | |
| 2569 default: | |
| 2570 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
| 2571 } | |
| 2572 ShouldNotReachHere(); | |
| 2573 return NULL; | |
| 2574 JVM_END | |
| 2575 | |
| 2576 | |
| 2577 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2578 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
|
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|
2579 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2580 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2581 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2582 switch (cp->tag_at(cp_index).value()) { |
| 2583 case JVM_CONSTANT_Methodref: | |
| 2584 case JVM_CONSTANT_InterfaceMethodref: { | |
| 2585 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
|
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|
2586 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2587 return classname->as_utf8(); |
| 2588 } | |
| 2589 default: | |
| 2590 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
| 2591 } | |
| 2592 ShouldNotReachHere(); | |
| 2593 return NULL; | |
| 2594 JVM_END | |
| 2595 | |
| 2596 | |
| 3938 | 2597 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
| 0 | 2598 JVMWrapper("JVM_GetCPFieldModifiers"); |
|
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|
2599 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
|
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|
2600 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
| 0 | 2601 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 2602 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
|
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|
2603 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
|
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|
2604 ConstantPool* cp_called = InstanceKlass::cast(k_called)->constants(); |
| 0 | 2605 switch (cp->tag_at(cp_index).value()) { |
| 2606 case JVM_CONSTANT_Fieldref: { | |
|
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|
2607 Symbol* name = cp->uncached_name_ref_at(cp_index); |
|
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|
2608 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
| 3938 | 2609 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
| 2610 if (fs.name() == name && fs.signature() == signature) { | |
| 2611 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
| 0 | 2612 } |
| 2613 } | |
| 2614 return -1; | |
| 2615 } | |
| 2616 default: | |
| 2617 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
| 2618 } | |
| 2619 ShouldNotReachHere(); | |
| 2620 return 0; | |
| 2621 JVM_END | |
| 2622 | |
| 2623 | |
| 2624 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
| 2625 JVMWrapper("JVM_GetCPMethodModifiers"); | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6271
diff
changeset
|
2626 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
2627 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
| 0 | 2628 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 2629 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
2630 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2631 switch (cp->tag_at(cp_index).value()) { |
| 2632 case JVM_CONSTANT_Methodref: | |
| 2633 case JVM_CONSTANT_InterfaceMethodref: { | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
2634 Symbol* name = cp->uncached_name_ref_at(cp_index); |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
2635 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6271
diff
changeset
|
2636 Array<Method*>* methods = InstanceKlass::cast(k_called)->methods(); |
| 0 | 2637 int methods_count = methods->length(); |
| 2638 for (int i = 0; i < methods_count; i++) { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
2639 Method* method = methods->at(i); |
| 0 | 2640 if (method->name() == name && method->signature() == signature) { |
| 2641 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 2642 } | |
| 2643 } | |
| 2644 return -1; | |
| 2645 } | |
| 2646 default: | |
| 2647 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
| 2648 } | |
| 2649 ShouldNotReachHere(); | |
| 2650 return 0; | |
| 2651 JVM_END | |
| 2652 | |
| 2653 | |
| 2654 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
| 2655 | |
| 2656 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
| 2657 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
| 2658 JVM_END | |
| 2659 | |
| 2660 | |
| 2661 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
| 2662 JVMWrapper("JVM_IsSameClassPackage"); | |
| 2663 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
| 2664 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6271
diff
changeset
|
2665 Klass* klass1 = java_lang_Class::as_Klass(class1_mirror); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
2666 Klass* klass2 = java_lang_Class::as_Klass(class2_mirror); |
| 0 | 2667 return (jboolean) Reflection::is_same_class_package(klass1, klass2); |
| 2668 JVM_END | |
| 2669 | |
| 2670 | |
| 2671 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
| 2672 | |
| 2673 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
| 2674 JVMWrapper2("JVM_Open (%s)", fname); | |
| 2675 | |
| 2676 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2677 int result = os::open(fname, flags, mode); |
| 0 | 2678 if (result >= 0) { |
| 2679 return result; | |
| 2680 } else { | |
| 2681 switch(errno) { | |
| 2682 case EEXIST: | |
| 2683 return JVM_EEXIST; | |
| 2684 default: | |
| 2685 return -1; | |
| 2686 } | |
| 2687 } | |
| 2688 JVM_END | |
| 2689 | |
| 2690 | |
| 2691 JVM_LEAF(jint, JVM_Close(jint fd)) | |
| 2692 JVMWrapper2("JVM_Close (0x%x)", fd); | |
| 2693 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2694 return os::close(fd); |
| 0 | 2695 JVM_END |
| 2696 | |
| 2697 | |
| 2698 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
| 2699 JVMWrapper2("JVM_Read (0x%x)", fd); | |
| 2700 | |
| 2701 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2702 return (jint)os::restartable_read(fd, buf, nbytes); |
| 0 | 2703 JVM_END |
| 2704 | |
| 2705 | |
| 2706 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
| 2707 JVMWrapper2("JVM_Write (0x%x)", fd); | |
| 2708 | |
| 2709 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2710 return (jint)os::write(fd, buf, nbytes); |
| 0 | 2711 JVM_END |
| 2712 | |
| 2713 | |
| 2714 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
| 2715 JVMWrapper2("JVM_Available (0x%x)", fd); | |
| 2716 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2717 return os::available(fd, pbytes); |
| 0 | 2718 JVM_END |
| 2719 | |
| 2720 | |
| 2721 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
| 2722 JVMWrapper4("JVM_Lseek (0x%x, %Ld, %d)", fd, offset, whence); | |
| 2723 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2724 return os::lseek(fd, offset, whence); |
| 0 | 2725 JVM_END |
| 2726 | |
| 2727 | |
| 2728 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
| 2729 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
|
2730 return os::ftruncate(fd, length); |
| 0 | 2731 JVM_END |
| 2732 | |
| 2733 | |
| 2734 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
| 2735 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
| 2736 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2737 return os::fsync(fd); |
| 0 | 2738 JVM_END |
| 2739 | |
| 2740 | |
| 2741 // Printing support ////////////////////////////////////////////////// | |
| 2742 extern "C" { | |
| 2743 | |
| 2744 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { | |
| 2745 // see bug 4399518, 4417214 | |
| 2746 if ((intptr_t)count <= 0) return -1; | |
| 2747 return vsnprintf(str, count, fmt, args); | |
| 2748 } | |
| 2749 | |
| 2750 | |
| 2751 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { | |
| 2752 va_list args; | |
| 2753 int len; | |
| 2754 va_start(args, fmt); | |
| 2755 len = jio_vsnprintf(str, count, fmt, args); | |
| 2756 va_end(args); | |
| 2757 return len; | |
| 2758 } | |
| 2759 | |
| 2760 | |
| 2761 int jio_fprintf(FILE* f, const char *fmt, ...) { | |
| 2762 int len; | |
| 2763 va_list args; | |
| 2764 va_start(args, fmt); | |
| 2765 len = jio_vfprintf(f, fmt, args); | |
| 2766 va_end(args); | |
| 2767 return len; | |
| 2768 } | |
| 2769 | |
| 2770 | |
| 2771 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { | |
| 2772 if (Arguments::vfprintf_hook() != NULL) { | |
| 2773 return Arguments::vfprintf_hook()(f, fmt, args); | |
| 2774 } else { | |
| 2775 return vfprintf(f, fmt, args); | |
| 2776 } | |
| 2777 } | |
| 2778 | |
| 2779 | |
| 2191 | 2780 JNIEXPORT int jio_printf(const char *fmt, ...) { |
| 0 | 2781 int len; |
| 2782 va_list args; | |
| 2783 va_start(args, fmt); | |
| 2784 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
| 2785 va_end(args); | |
| 2786 return len; | |
| 2787 } | |
| 2788 | |
| 2789 | |
| 2790 // HotSpot specific jio method | |
| 2791 void jio_print(const char* s) { | |
| 2792 // Try to make this function as atomic as possible. | |
| 2793 if (Arguments::vfprintf_hook() != NULL) { | |
| 2794 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
| 2795 } else { | |
|
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
431
diff
changeset
|
2796 // Make an unused local variable to avoid warning from gcc 4.x compiler. |
|
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
431
diff
changeset
|
2797 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
| 0 | 2798 } |
| 2799 } | |
| 2800 | |
| 2801 } // Extern C | |
| 2802 | |
| 2803 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
| 2804 | |
| 2805 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
| 2806 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
| 2807 // OSThread objects. The exception to this rule is when the target object is the thread | |
| 2808 // doing the operation, in which case we know that the thread won't exit until the | |
| 2809 // operation is done (all exits being voluntary). There are a few cases where it is | |
| 2810 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
| 2811 // you are alive. While these can still happen, they are not subject to deadlocks if | |
| 2812 // the lock is held while the operation occurs (this is not the case for suspend, for | |
| 2813 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
| 2814 // implementation is local to this file, we always lock Threads_lock for that one. | |
| 2815 | |
| 2816 static void thread_entry(JavaThread* thread, TRAPS) { | |
| 2817 HandleMark hm(THREAD); | |
| 2818 Handle obj(THREAD, thread->threadObj()); | |
| 2819 JavaValue result(T_VOID); | |
| 2820 JavaCalls::call_virtual(&result, | |
| 2821 obj, | |
| 1142 | 2822 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
2823 vmSymbols::run_method_name(), |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
2824 vmSymbols::void_method_signature(), |
| 0 | 2825 THREAD); |
| 2826 } | |
| 2827 | |
| 2828 | |
| 2829 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
| 2830 JVMWrapper("JVM_StartThread"); | |
| 2831 JavaThread *native_thread = NULL; | |
| 2832 | |
| 2833 // We cannot hold the Threads_lock when we throw an exception, | |
| 2834 // due to rank ordering issues. Example: we might need to grab the | |
| 2835 // Heap_lock while we construct the exception. | |
| 2836 bool throw_illegal_thread_state = false; | |
| 2837 | |
| 2838 // We must release the Threads_lock before we can post a jvmti event | |
| 2839 // in Thread::start. | |
| 2840 { | |
| 2841 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
| 2842 // we operate. | |
| 2843 MutexLocker mu(Threads_lock); | |
| 2844 | |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2845 // Since JDK 5 the java.lang.Thread threadStatus is used to prevent |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2846 // re-starting an already started thread, so we should usually find |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2847 // that the JavaThread is null. However for a JNI attached thread |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2848 // there is a small window between the Thread object being created |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2849 // (with its JavaThread set) and the update to its threadStatus, so we |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2850 // have to check for this |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2851 if (java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)) != NULL) { |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2852 throw_illegal_thread_state = true; |
| 0 | 2853 } else { |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2854 // 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
|
2855 // for historical reasons we let the thread detect that itself when it starts running |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2856 |
| 0 | 2857 jlong size = |
| 2858 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
| 2859 // Allocate the C++ Thread structure and create the native thread. The | |
| 2860 // stack size retrieved from java is signed, but the constructor takes | |
| 2861 // size_t (an unsigned type), so avoid passing negative values which would | |
| 2862 // result in really large stacks. | |
| 2863 size_t sz = size > 0 ? (size_t) size : 0; | |
| 2864 native_thread = new JavaThread(&thread_entry, sz); | |
| 2865 | |
| 2866 // At this point it may be possible that no osthread was created for the | |
| 2867 // JavaThread due to lack of memory. Check for this situation and throw | |
| 2868 // an exception if necessary. Eventually we may want to change this so | |
| 2869 // that we only grab the lock if the thread was created successfully - | |
| 2870 // then we can also do this check and throw the exception in the | |
| 2871 // JavaThread constructor. | |
| 2872 if (native_thread->osthread() != NULL) { | |
| 2873 // Note: the current thread is not being used within "prepare". | |
| 2874 native_thread->prepare(jthread); | |
| 2875 } | |
| 2876 } | |
| 2877 } | |
| 2878 | |
| 2879 if (throw_illegal_thread_state) { | |
| 2880 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
| 2881 } | |
| 2882 | |
| 2883 assert(native_thread != NULL, "Starting null thread?"); | |
| 2884 | |
| 2885 if (native_thread->osthread() == NULL) { | |
| 2886 // No one should hold a reference to the 'native_thread'. | |
| 2887 delete native_thread; | |
| 2888 if (JvmtiExport::should_post_resource_exhausted()) { | |
| 2889 JvmtiExport::post_resource_exhausted( | |
| 2890 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
| 2891 "unable to create new native thread"); | |
| 2892 } | |
| 2893 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
| 2894 "unable to create new native thread"); | |
| 2895 } | |
| 2896 | |
| 2897 Thread::start(native_thread); | |
| 2898 | |
| 2899 JVM_END | |
| 2900 | |
| 2901 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
| 2902 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
| 2903 // but is thought to be reliable and simple. In the case, where the receiver is the | |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2904 // same thread as the sender, no safepoint is needed. |
| 0 | 2905 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
| 2906 JVMWrapper("JVM_StopThread"); | |
| 2907 | |
| 2908 oop java_throwable = JNIHandles::resolve(throwable); | |
| 2909 if (java_throwable == NULL) { | |
| 2910 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 2911 } | |
| 2912 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2913 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
|
4872
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4717
diff
changeset
|
2914 Events::log_exception(JavaThread::current(), |
|
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4717
diff
changeset
|
2915 "JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", |
|
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4717
diff
changeset
|
2916 receiver, (address)java_thread, throwable); |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2917 // First check if thread is alive |
| 0 | 2918 if (receiver != NULL) { |
| 2919 // Check if exception is getting thrown at self (use oop equality, since the | |
| 2920 // target object might exit) | |
| 2921 if (java_thread == thread->threadObj()) { | |
| 2922 THROW_OOP(java_throwable); | |
| 2923 } else { | |
| 2924 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
| 2925 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
| 2926 } | |
| 2927 } | |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2928 else { |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2929 // Either: |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2930 // - 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
|
2931 // - 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
|
2932 // 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
|
2933 // 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
|
2934 // 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
|
2935 // 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
|
2936 java_lang_Thread::set_stillborn(java_thread); |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2937 } |
| 0 | 2938 JVM_END |
| 2939 | |
| 2940 | |
| 2941 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
| 2942 JVMWrapper("JVM_IsThreadAlive"); | |
| 2943 | |
| 2944 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
| 2945 return java_lang_Thread::is_alive(thread_oop); | |
| 2946 JVM_END | |
| 2947 | |
| 2948 | |
| 2949 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
| 2950 JVMWrapper("JVM_SuspendThread"); | |
| 2951 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2952 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
| 2953 | |
| 2954 if (receiver != NULL) { | |
| 2955 // thread has run and has not exited (still on threads list) | |
| 2956 | |
| 2957 { | |
| 2958 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
| 2959 if (receiver->is_external_suspend()) { | |
| 2960 // Don't allow nested external suspend requests. We can't return | |
| 2961 // an error from this interface so just ignore the problem. | |
| 2962 return; | |
| 2963 } | |
| 2964 if (receiver->is_exiting()) { // thread is in the process of exiting | |
| 2965 return; | |
| 2966 } | |
| 2967 receiver->set_external_suspend(); | |
| 2968 } | |
| 2969 | |
| 2970 // java_suspend() will catch threads in the process of exiting | |
| 2971 // and will ignore them. | |
| 2972 receiver->java_suspend(); | |
| 2973 | |
| 2974 // It would be nice to have the following assertion in all the | |
| 2975 // time, but it is possible for a racing resume request to have | |
| 2976 // resumed this thread right after we suspended it. Temporarily | |
| 2977 // enable this assertion if you are chasing a different kind of | |
| 2978 // bug. | |
| 2979 // | |
| 2980 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
| 2981 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
| 2982 } | |
| 2983 JVM_END | |
| 2984 | |
| 2985 | |
| 2986 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
| 2987 JVMWrapper("JVM_ResumeThread"); | |
| 2988 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
| 2989 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
| 2990 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
| 2991 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
| 2992 // looks at it. | |
| 2993 MutexLocker ml(Threads_lock); | |
| 2994 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 2995 if (thr != NULL) { | |
| 2996 // the thread has run and is not in the process of exiting | |
| 2997 thr->java_resume(); | |
| 2998 } | |
| 2999 JVM_END | |
| 3000 | |
| 3001 | |
| 3002 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
| 3003 JVMWrapper("JVM_SetThreadPriority"); | |
| 3004 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3005 MutexLocker ml(Threads_lock); | |
| 3006 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3007 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
| 3008 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 3009 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
| 3010 Thread::set_priority(thr, (ThreadPriority)prio); | |
| 3011 } | |
| 3012 JVM_END | |
| 3013 | |
| 3014 | |
| 3015 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
| 3016 JVMWrapper("JVM_Yield"); | |
| 3017 if (os::dont_yield()) return; | |
| 4006 | 3018 #ifndef USDT2 |
|
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|
3019 HS_DTRACE_PROBE0(hotspot, thread__yield); |
| 4006 | 3020 #else /* USDT2 */ |
| 3021 HOTSPOT_THREAD_YIELD(); | |
| 3022 #endif /* USDT2 */ | |
| 0 | 3023 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
| 3024 // Critical for similar threading behaviour | |
| 3025 if (ConvertYieldToSleep) { | |
| 3026 os::sleep(thread, MinSleepInterval, false); | |
| 3027 } else { | |
| 3028 os::yield(); | |
| 3029 } | |
| 3030 JVM_END | |
| 3031 | |
| 3032 | |
| 3033 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
| 3034 JVMWrapper("JVM_Sleep"); | |
| 3035 | |
| 3036 if (millis < 0) { | |
| 3037 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
| 3038 } | |
| 3039 | |
| 3040 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
| 3041 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 3042 } | |
| 3043 | |
| 3044 // Save current thread state and restore it at the end of this block. | |
| 3045 // And set new thread state to SLEEPING. | |
| 3046 JavaThreadSleepState jtss(thread); | |
| 3047 | |
| 4006 | 3048 #ifndef USDT2 |
|
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3049 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); |
| 4006 | 3050 #else /* USDT2 */ |
| 3051 HOTSPOT_THREAD_SLEEP_BEGIN( | |
| 3052 millis); | |
| 3053 #endif /* USDT2 */ | |
|
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|
3054 |
| 10405 | 3055 EventThreadSleep event; |
| 3056 | |
| 0 | 3057 if (millis == 0) { |
| 3058 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
| 3059 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
| 3060 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
| 3061 // for SOLARIS | |
| 3062 if (ConvertSleepToYield) { | |
| 3063 os::yield(); | |
| 3064 } else { | |
| 3065 ThreadState old_state = thread->osthread()->get_state(); | |
| 3066 thread->osthread()->set_state(SLEEPING); | |
| 3067 os::sleep(thread, MinSleepInterval, false); | |
| 3068 thread->osthread()->set_state(old_state); | |
| 3069 } | |
| 3070 } else { | |
| 3071 ThreadState old_state = thread->osthread()->get_state(); | |
| 3072 thread->osthread()->set_state(SLEEPING); | |
| 3073 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
| 3074 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
| 3075 // us while we were sleeping. We do not overwrite those. | |
| 3076 if (!HAS_PENDING_EXCEPTION) { | |
| 10405 | 3077 if (event.should_commit()) { |
| 3078 event.set_time(millis); | |
| 3079 event.commit(); | |
| 3080 } | |
| 4006 | 3081 #ifndef USDT2 |
|
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|
3082 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); |
| 4006 | 3083 #else /* USDT2 */ |
| 3084 HOTSPOT_THREAD_SLEEP_END( | |
| 3085 1); | |
| 3086 #endif /* USDT2 */ | |
| 0 | 3087 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
| 3088 // to properly restore the thread state. That's likely wrong. | |
| 3089 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 3090 } | |
| 3091 } | |
| 3092 thread->osthread()->set_state(old_state); | |
| 3093 } | |
| 10405 | 3094 if (event.should_commit()) { |
| 3095 event.set_time(millis); | |
| 3096 event.commit(); | |
| 3097 } | |
| 4006 | 3098 #ifndef USDT2 |
|
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|
3099 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); |
| 4006 | 3100 #else /* USDT2 */ |
| 3101 HOTSPOT_THREAD_SLEEP_END( | |
| 3102 0); | |
| 3103 #endif /* USDT2 */ | |
| 0 | 3104 JVM_END |
| 3105 | |
| 3106 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
| 3107 JVMWrapper("JVM_CurrentThread"); | |
| 3108 oop jthread = thread->threadObj(); | |
| 3109 assert (thread != NULL, "no current thread!"); | |
| 3110 return JNIHandles::make_local(env, jthread); | |
| 3111 JVM_END | |
| 3112 | |
| 3113 | |
| 3114 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
| 3115 JVMWrapper("JVM_CountStackFrames"); | |
| 3116 | |
| 3117 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3118 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3119 bool throw_illegal_thread_state = false; | |
| 3120 int count = 0; | |
| 3121 | |
| 3122 { | |
| 3123 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 3124 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 3125 // acquire of the lock | |
| 3126 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3127 | |
| 3128 if (thr == NULL) { | |
| 3129 // do nothing | |
| 3130 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
| 3131 // Check whether this java thread has been suspended already. If not, throws | |
| 3132 // IllegalThreadStateException. We defer to throw that exception until | |
| 3133 // Threads_lock is released since loading exception class has to leave VM. | |
| 3134 // The correct way to test a thread is actually suspended is | |
| 3135 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
| 3136 // the Threads_lock. The above tests are sufficient for our purposes | |
| 3137 // provided the walkability of the stack is stable - which it isn't | |
| 3138 // 100% but close enough for most practical purposes. | |
| 3139 throw_illegal_thread_state = true; | |
| 3140 } else { | |
| 3141 // Count all java activation, i.e., number of vframes | |
| 3142 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
| 3143 // Native frames are not counted | |
| 3144 if (!vfst.method()->is_native()) count++; | |
| 3145 } | |
| 3146 } | |
| 3147 } | |
| 3148 | |
| 3149 if (throw_illegal_thread_state) { | |
| 3150 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
| 3151 "this thread is not suspended"); | |
| 3152 } | |
| 3153 return count; | |
| 3154 JVM_END | |
| 3155 | |
| 3156 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
| 3157 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
| 3158 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
| 3159 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
| 3160 // outside the critical section. Threads_lock is hot so we want to minimize | |
| 3161 // the hold-time. A cleaner interface would be to decompose interrupt into | |
| 3162 // two steps. The 1st phase, performed under Threads_lock, would return | |
| 3163 // a closure that'd be invoked after Threads_lock was dropped. | |
| 3164 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
| 3165 // admit spurious wakeups. | |
| 3166 | |
| 3167 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
| 3168 JVMWrapper("JVM_Interrupt"); | |
| 3169 | |
| 3170 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3171 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3172 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 3173 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 3174 // acquire of the lock | |
| 3175 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3176 if (thr != NULL) { | |
| 3177 Thread::interrupt(thr); | |
| 3178 } | |
| 3179 JVM_END | |
| 3180 | |
| 3181 | |
| 3182 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
| 3183 JVMWrapper("JVM_IsInterrupted"); | |
| 3184 | |
| 3185 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3186 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3187 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 3188 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 3189 // acquire of the lock | |
| 3190 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3191 if (thr == NULL) { | |
| 3192 return JNI_FALSE; | |
| 3193 } else { | |
| 3194 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
| 3195 } | |
| 3196 JVM_END | |
| 3197 | |
| 3198 | |
| 3199 // Return true iff the current thread has locked the object passed in | |
| 3200 | |
| 3201 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
| 3202 JVMWrapper("JVM_HoldsLock"); | |
| 3203 assert(THREAD->is_Java_thread(), "sanity check"); | |
| 3204 if (obj == NULL) { | |
| 3205 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
| 3206 } | |
| 3207 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
| 3208 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
| 3209 JVM_END | |
| 3210 | |
| 3211 | |
| 3212 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
| 3213 JVMWrapper("JVM_DumpAllStacks"); | |
| 3214 VM_PrintThreads op; | |
| 3215 VMThread::execute(&op); | |
| 3216 if (JvmtiExport::should_post_data_dump()) { | |
| 3217 JvmtiExport::post_data_dump(); | |
| 3218 } | |
| 3219 JVM_END | |
| 3220 | |
| 4006 | 3221 JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name)) |
| 3222 JVMWrapper("JVM_SetNativeThreadName"); | |
| 3223 ResourceMark rm(THREAD); | |
| 3224 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3225 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 3226 // Thread naming only supported for the current thread, doesn't work for | |
| 3227 // target threads. | |
| 3228 if (Thread::current() == thr && !thr->has_attached_via_jni()) { | |
| 3229 // we don't set the name of an attached thread to avoid stepping | |
| 3230 // on other programs | |
| 3231 const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
| 3232 os::set_native_thread_name(thread_name); | |
| 3233 } | |
| 3234 JVM_END | |
| 0 | 3235 |
| 3236 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
| 3237 | |
| 3238 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
| 3239 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
| 3240 if (jthread->privileged_stack_top() == NULL) return false; | |
| 3241 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
| 3242 oop loader = jthread->privileged_stack_top()->class_loader(); | |
| 3243 if (loader == NULL) return true; | |
| 3244 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
| 3245 if (trusted) return true; | |
| 3246 } | |
| 3247 return false; | |
| 3248 } | |
| 3249 | |
| 3250 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
| 3251 JVMWrapper("JVM_CurrentLoadedClass"); | |
| 3252 ResourceMark rm(THREAD); | |
| 3253 | |
| 3254 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3255 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3256 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3257 if (trusted) return NULL; | |
| 3258 | |
|
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|
3259 Method* m = vfst.method(); |
| 0 | 3260 if (!m->is_native()) { |
|
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|
3261 InstanceKlass* holder = m->method_holder(); |
|
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|
3262 oop loader = holder->class_loader(); |
| 0 | 3263 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
|
6940
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|
3264 return (jclass) JNIHandles::make_local(env, holder->java_mirror()); |
| 0 | 3265 } |
| 3266 } | |
| 3267 } | |
| 3268 return NULL; | |
| 3269 JVM_END | |
| 3270 | |
| 3271 | |
| 3272 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
| 3273 JVMWrapper("JVM_CurrentClassLoader"); | |
| 3274 ResourceMark rm(THREAD); | |
| 3275 | |
| 3276 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3277 | |
| 3278 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3279 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3280 if (trusted) return NULL; | |
| 3281 | |
|
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|
3282 Method* m = vfst.method(); |
| 0 | 3283 if (!m->is_native()) { |
|
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|
3284 InstanceKlass* holder = m->method_holder(); |
| 0 | 3285 assert(holder->is_klass(), "just checking"); |
|
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|
3286 oop loader = holder->class_loader(); |
| 0 | 3287 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
| 3288 return JNIHandles::make_local(env, loader); | |
| 3289 } | |
| 3290 } | |
| 3291 } | |
| 3292 return NULL; | |
| 3293 JVM_END | |
| 3294 | |
| 3295 | |
| 3296 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
| 3297 JVMWrapper("JVM_GetClassContext"); | |
| 3298 ResourceMark rm(THREAD); | |
| 3299 JvmtiVMObjectAllocEventCollector oam; | |
|
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|
3300 vframeStream vfst(thread); |
|
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|
3301 |
|
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|
3302 if (SystemDictionary::reflect_CallerSensitive_klass() != NULL) { |
|
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|
3303 // This must only be called from SecurityManager.getClassContext |
|
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|
3304 Method* m = vfst.method(); |
|
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|
3305 if (!(m->method_holder() == SystemDictionary::SecurityManager_klass() && |
|
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|
3306 m->name() == vmSymbols::getClassContext_name() && |
|
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|
3307 m->signature() == vmSymbols::void_class_array_signature())) { |
|
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|
3308 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetClassContext must only be called from SecurityManager.getClassContext"); |
|
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|
3309 } |
|
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|
3310 } |
|
16885e702c88
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|
3311 |
|
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|
3312 // Collect method holders |
|
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|
3313 GrowableArray<KlassHandle>* klass_array = new GrowableArray<KlassHandle>(); |
|
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|
3314 for (; !vfst.at_end(); vfst.security_next()) { |
|
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|
3315 Method* m = vfst.method(); |
| 0 | 3316 // Native frames are not returned |
|
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|
3317 if (!m->is_ignored_by_security_stack_walk() && !m->is_native()) { |
|
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|
3318 Klass* holder = m->method_holder(); |
| 0 | 3319 assert(holder->is_klass(), "just checking"); |
|
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|
3320 klass_array->append(holder); |
| 0 | 3321 } |
| 3322 } | |
| 3323 | |
| 3324 // Create result array of type [Ljava/lang/Class; | |
|
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|
3325 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), klass_array->length(), CHECK_NULL); |
| 0 | 3326 // Fill in mirrors corresponding to method holders |
|
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|
3327 for (int i = 0; i < klass_array->length(); i++) { |
|
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diff
changeset
|
3328 result->obj_at_put(i, klass_array->at(i)->java_mirror()); |
| 0 | 3329 } |
| 3330 | |
| 3331 return (jobjectArray) JNIHandles::make_local(env, result); | |
| 3332 JVM_END | |
| 3333 | |
| 3334 | |
| 3335 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
| 3336 JVMWrapper("JVM_ClassDepth"); | |
| 3337 ResourceMark rm(THREAD); | |
| 3338 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 3339 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
| 3340 | |
| 3341 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
|
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|
3342 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
|
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diff
changeset
|
3343 if (class_name_sym == NULL) { |
| 0 | 3344 return -1; |
| 3345 } | |
| 3346 | |
| 3347 int depth = 0; | |
| 3348 | |
| 3349 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3350 if (!vfst.method()->is_native()) { | |
|
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|
3351 InstanceKlass* holder = vfst.method()->method_holder(); |
| 0 | 3352 assert(holder->is_klass(), "just checking"); |
|
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|
3353 if (holder->name() == class_name_sym) { |
| 0 | 3354 return depth; |
| 3355 } | |
| 3356 depth++; | |
| 3357 } | |
| 3358 } | |
| 3359 return -1; | |
| 3360 JVM_END | |
| 3361 | |
| 3362 | |
| 3363 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
| 3364 JVMWrapper("JVM_ClassLoaderDepth"); | |
| 3365 ResourceMark rm(THREAD); | |
| 3366 int depth = 0; | |
| 3367 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3368 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
| 3369 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3370 if (trusted) return -1; | |
| 3371 | |
|
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|
3372 Method* m = vfst.method(); |
| 0 | 3373 if (!m->is_native()) { |
|
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|
3374 InstanceKlass* holder = m->method_holder(); |
| 0 | 3375 assert(holder->is_klass(), "just checking"); |
|
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|
3376 oop loader = holder->class_loader(); |
| 0 | 3377 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
| 3378 return depth; | |
| 3379 } | |
| 3380 depth++; | |
| 3381 } | |
| 3382 } | |
| 3383 return -1; | |
| 3384 JVM_END | |
| 3385 | |
| 3386 | |
| 3387 // java.lang.Package //////////////////////////////////////////////////////////////// | |
| 3388 | |
| 3389 | |
| 3390 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
| 3391 JVMWrapper("JVM_GetSystemPackage"); | |
| 3392 ResourceMark rm(THREAD); | |
| 3393 JvmtiVMObjectAllocEventCollector oam; | |
| 3394 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
| 3395 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
| 3396 return (jstring) JNIHandles::make_local(result); | |
| 3397 JVM_END | |
| 3398 | |
| 3399 | |
| 3400 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
| 3401 JVMWrapper("JVM_GetSystemPackages"); | |
| 3402 JvmtiVMObjectAllocEventCollector oam; | |
| 3403 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
| 3404 return (jobjectArray) JNIHandles::make_local(result); | |
| 3405 JVM_END | |
| 3406 | |
| 3407 | |
| 3408 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
| 3409 | |
|
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|
3410 bool force_verify_field_access(Klass* current_class, Klass* field_class, AccessFlags access, bool classloader_only) { |
| 0 | 3411 if (current_class == NULL) { |
| 3412 return true; | |
| 3413 } | |
| 3414 if ((current_class == field_class) || access.is_public()) { | |
| 3415 return true; | |
| 3416 } | |
| 3417 | |
| 3418 if (access.is_protected()) { | |
| 3419 // See if current_class is a subclass of field_class | |
| 6983 | 3420 if (current_class->is_subclass_of(field_class)) { |
| 0 | 3421 return true; |
| 3422 } | |
| 3423 } | |
| 3424 | |
|
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|
3425 return (!access.is_private() && InstanceKlass::cast(current_class)->is_same_class_package(field_class)); |
| 0 | 3426 } |
| 3427 | |
| 3428 | |
| 3429 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
| 3430 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
| 3431 JVMWrapper("JVM_AllocateNewObject"); | |
| 3432 JvmtiVMObjectAllocEventCollector oam; | |
| 3433 // Receiver is not used | |
| 3434 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
| 3435 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
| 3436 | |
| 3437 // Cannot instantiate primitive types | |
| 3438 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
| 3439 ResourceMark rm(THREAD); | |
| 3440 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3441 } | |
| 3442 | |
| 3443 // Arrays not allowed here, must use JVM_AllocateNewArray | |
| 6983 | 3444 if (java_lang_Class::as_Klass(curr_mirror)->oop_is_array() || |
| 3445 java_lang_Class::as_Klass(init_mirror)->oop_is_array()) { | |
| 0 | 3446 ResourceMark rm(THREAD); |
| 3447 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3448 } | |
| 3449 | |
|
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|
3450 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_Klass(curr_mirror)); |
|
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diff
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|
3451 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_Klass(init_mirror)); |
| 0 | 3452 |
| 3453 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
| 3454 | |
| 3455 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
| 3456 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
| 3457 | |
| 3458 // Make sure klass is initialized, since we are about to instantiate one of them. | |
| 3459 curr_klass->initialize(CHECK_NULL); | |
| 3460 | |
| 3461 methodHandle m (THREAD, | |
| 3462 init_klass->find_method(vmSymbols::object_initializer_name(), | |
| 3463 vmSymbols::void_method_signature())); | |
| 3464 if (m.is_null()) { | |
| 3465 ResourceMark rm(THREAD); | |
| 3466 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
| 6983 | 3467 Method::name_and_sig_as_C_string(init_klass(), |
| 0 | 3468 vmSymbols::object_initializer_name(), |
| 3469 vmSymbols::void_method_signature())); | |
| 3470 } | |
| 3471 | |
| 3472 if (curr_klass == init_klass && !m->is_public()) { | |
| 3473 // Calling the constructor for class 'curr_klass'. | |
| 3474 // Only allow calls to a public no-arg constructor. | |
| 3475 // This path corresponds to creating an Externalizable object. | |
| 3476 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3477 } | |
| 3478 | |
| 3479 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
| 3480 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
| 3481 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3482 } | |
| 3483 | |
| 3484 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
| 3485 // Call constructor m. This might call a constructor higher up in the hierachy | |
| 3486 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
| 3487 | |
| 3488 return JNIHandles::make_local(obj()); | |
| 3489 JVM_END | |
| 3490 | |
| 3491 | |
| 3492 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
| 3493 JVMWrapper("JVM_AllocateNewArray"); | |
| 3494 JvmtiVMObjectAllocEventCollector oam; | |
| 3495 oop mirror = JNIHandles::resolve_non_null(currClass); | |
| 3496 | |
| 3497 if (java_lang_Class::is_primitive(mirror)) { | |
| 3498 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3499 } | |
|
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diff
changeset
|
3500 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 3501 oop result; |
| 3502 | |
|
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diff
changeset
|
3503 if (k->oop_is_typeArray()) { |
| 0 | 3504 // typeArray |
|
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
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6725
diff
changeset
|
3505 result = TypeArrayKlass::cast(k)->allocate(length, CHECK_NULL); |
|
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diff
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|
3506 } else if (k->oop_is_objArray()) { |
| 0 | 3507 // objArray |
|
6831
d8ce2825b193
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coleenp
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6725
diff
changeset
|
3508 ObjArrayKlass* oak = ObjArrayKlass::cast(k); |
| 0 | 3509 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) |
| 3510 result = oak->allocate(length, CHECK_NULL); | |
| 3511 } else { | |
| 3512 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3513 } | |
| 3514 return JNIHandles::make_local(env, result); | |
| 3515 JVM_END | |
| 3516 | |
| 3517 | |
| 3518 // Return the first non-null class loader up the execution stack, or null | |
| 3519 // if only code from the null class loader is on the stack. | |
| 3520 | |
| 3521 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
| 3522 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3523 // UseNewReflection | |
| 3524 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
|
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
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6831
diff
changeset
|
3525 oop loader = vfst.method()->method_holder()->class_loader(); |
| 0 | 3526 if (loader != NULL) { |
| 3527 return JNIHandles::make_local(env, loader); | |
| 3528 } | |
| 3529 } | |
| 3530 return NULL; | |
| 3531 JVM_END | |
| 3532 | |
| 3533 | |
| 3534 // Load a class relative to the most recent class on the stack with a non-null | |
| 3535 // classloader. | |
| 3536 // This function has been deprecated and should not be considered part of the | |
| 3537 // specified JVM interface. | |
| 3538 | |
| 3539 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
| 3540 jclass currClass, jstring currClassName)) | |
| 3541 JVMWrapper("JVM_LoadClass0"); | |
| 3542 // Receiver is not used | |
| 3543 ResourceMark rm(THREAD); | |
| 3544 | |
| 3545 // Class name argument is not guaranteed to be in internal format | |
| 3546 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
| 3547 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
| 3548 | |
| 3549 const char* str = java_lang_String::as_utf8_string(string()); | |
| 3550 | |
|
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2162
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changeset
|
3551 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
| 0 | 3552 // It's impossible to create this class; the name cannot fit |
| 3553 // into the constant pool. | |
| 3554 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
| 3555 } | |
| 3556 | |
|
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|
3557 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
| 0 | 3558 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
| 3559 // Find the most recent class on the stack with a non-null classloader | |
| 3560 oop loader = NULL; | |
| 3561 oop protection_domain = NULL; | |
| 3562 if (curr_klass.is_null()) { | |
| 3563 for (vframeStream vfst(thread); | |
| 3564 !vfst.at_end() && loader == NULL; | |
| 3565 vfst.next()) { | |
| 3566 if (!vfst.method()->is_native()) { | |
|
6940
18fb7da42534
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coleenp
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6831
diff
changeset
|
3567 InstanceKlass* holder = vfst.method()->method_holder(); |
|
18fb7da42534
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6831
diff
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|
3568 loader = holder->class_loader(); |
|
18fb7da42534
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6831
diff
changeset
|
3569 protection_domain = holder->protection_domain(); |
| 0 | 3570 } |
| 3571 } | |
| 3572 } else { | |
|
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diff
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|
3573 Klass* curr_klass_oop = java_lang_Class::as_Klass(curr_klass()); |
|
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diff
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|
3574 loader = InstanceKlass::cast(curr_klass_oop)->class_loader(); |
|
da91efe96a93
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|
3575 protection_domain = InstanceKlass::cast(curr_klass_oop)->protection_domain(); |
| 0 | 3576 } |
| 3577 Handle h_loader(THREAD, loader); | |
| 3578 Handle h_prot (THREAD, protection_domain); | |
|
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
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579
diff
changeset
|
3579 jclass result = find_class_from_class_loader(env, name, true, h_loader, h_prot, |
|
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
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579
diff
changeset
|
3580 false, thread); |
|
715dceaa89b7
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579
diff
changeset
|
3581 if (TraceClassResolution && result != NULL) { |
|
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changeset
|
3582 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
|
657
715dceaa89b7
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diff
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|
3583 } |
|
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|
3584 return result; |
| 0 | 3585 JVM_END |
| 3586 | |
| 3587 | |
| 3588 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
| 3589 | |
| 3590 | |
| 3591 // resolve array handle and check arguments | |
| 3592 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
| 3593 if (arr == NULL) { | |
| 3594 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 3595 } | |
| 3596 oop a = JNIHandles::resolve_non_null(arr); | |
|
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|
3597 if (!a->is_array() || (type_array_only && !a->is_typeArray())) { |
| 0 | 3598 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); |
| 3599 } | |
| 3600 return arrayOop(a); | |
| 3601 } | |
| 3602 | |
| 3603 | |
| 3604 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
| 3605 JVMWrapper("JVM_GetArrayLength"); | |
| 3606 arrayOop a = check_array(env, arr, false, CHECK_0); | |
| 3607 return a->length(); | |
| 3608 JVM_END | |
| 3609 | |
| 3610 | |
| 3611 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
| 3612 JVMWrapper("JVM_Array_Get"); | |
| 3613 JvmtiVMObjectAllocEventCollector oam; | |
| 3614 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
| 3615 jvalue value; | |
| 3616 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
| 3617 oop box = Reflection::box(&value, type, CHECK_NULL); | |
| 3618 return JNIHandles::make_local(env, box); | |
| 3619 JVM_END | |
| 3620 | |
| 3621 | |
| 3622 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
| 3623 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
| 3624 jvalue value; | |
| 3625 value.i = 0; // to initialize value before getting used in CHECK | |
| 3626 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
| 3627 assert(a->is_typeArray(), "just checking"); | |
| 3628 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
| 3629 BasicType wide_type = (BasicType) wCode; | |
| 3630 if (type != wide_type) { | |
| 3631 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
| 3632 } | |
| 3633 return value; | |
| 3634 JVM_END | |
| 3635 | |
| 3636 | |
| 3637 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
| 3638 JVMWrapper("JVM_SetArrayElement"); | |
| 3639 arrayOop a = check_array(env, arr, false, CHECK); | |
| 3640 oop box = JNIHandles::resolve(val); | |
| 3641 jvalue value; | |
| 3642 value.i = 0; // to initialize value before getting used in CHECK | |
| 3643 BasicType value_type; | |
| 3644 if (a->is_objArray()) { | |
| 3645 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
| 3646 value_type = Reflection::unbox_for_regular_object(box, &value); | |
| 3647 } else { | |
| 3648 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
| 3649 } | |
| 3650 Reflection::array_set(&value, a, index, value_type, CHECK); | |
| 3651 JVM_END | |
| 3652 | |
| 3653 | |
| 3654 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
| 3655 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
| 3656 arrayOop a = check_array(env, arr, true, CHECK); | |
| 3657 assert(a->is_typeArray(), "just checking"); | |
| 3658 BasicType value_type = (BasicType) vCode; | |
| 3659 Reflection::array_set(&v, a, index, value_type, CHECK); | |
| 3660 JVM_END | |
| 3661 | |
| 3662 | |
| 3663 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
| 3664 JVMWrapper("JVM_NewArray"); | |
| 3665 JvmtiVMObjectAllocEventCollector oam; | |
| 3666 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3667 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
| 3668 return JNIHandles::make_local(env, result); | |
| 3669 JVM_END | |
| 3670 | |
| 3671 | |
| 3672 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
| 3673 JVMWrapper("JVM_NewMultiArray"); | |
| 3674 JvmtiVMObjectAllocEventCollector oam; | |
| 3675 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
| 3676 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3677 assert(dim_array->is_typeArray(), "just checking"); | |
| 3678 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
| 3679 return JNIHandles::make_local(env, result); | |
| 3680 JVM_END | |
| 3681 | |
| 3682 | |
| 3683 // Networking library support //////////////////////////////////////////////////////////////////// | |
| 3684 | |
| 3685 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
| 3686 JVMWrapper("JVM_InitializeSocketLibrary"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3687 return 0; |
| 0 | 3688 JVM_END |
| 3689 | |
| 3690 | |
| 3691 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
| 3692 JVMWrapper("JVM_Socket"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3693 return os::socket(domain, type, protocol); |
| 0 | 3694 JVM_END |
| 3695 | |
| 3696 | |
| 3697 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
| 3698 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
| 3699 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3700 return os::socket_close(fd); |
| 0 | 3701 JVM_END |
| 3702 | |
| 3703 | |
| 3704 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
| 3705 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
| 3706 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3707 return os::socket_shutdown(fd, howto); |
| 0 | 3708 JVM_END |
| 3709 | |
| 3710 | |
| 3711 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3712 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
| 3713 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3714 return os::recv(fd, buf, (size_t)nBytes, (uint)flags); |
| 0 | 3715 JVM_END |
| 3716 | |
| 3717 | |
| 3718 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3719 JVMWrapper2("JVM_Send (0x%x)", fd); | |
| 3720 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3721 return os::send(fd, buf, (size_t)nBytes, (uint)flags); |
| 0 | 3722 JVM_END |
| 3723 | |
| 3724 | |
| 3725 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
| 3726 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
| 3727 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3728 return os::timeout(fd, timeout); |
| 0 | 3729 JVM_END |
| 3730 | |
| 3731 | |
| 3732 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
| 3733 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
| 3734 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3735 return os::listen(fd, count); |
| 0 | 3736 JVM_END |
| 3737 | |
| 3738 | |
| 3739 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
| 3740 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
| 3741 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3742 return os::connect(fd, him, (socklen_t)len); |
| 0 | 3743 JVM_END |
| 3744 | |
| 3745 | |
| 3746 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
| 3747 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
| 3748 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3749 return os::bind(fd, him, (socklen_t)len); |
| 0 | 3750 JVM_END |
| 3751 | |
| 3752 | |
| 3753 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
| 3754 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
| 3755 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3756 socklen_t socklen = (socklen_t)(*len); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3757 jint result = os::accept(fd, him, &socklen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3758 *len = (jint)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3759 return result; |
| 0 | 3760 JVM_END |
| 3761 | |
| 3762 | |
| 3763 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
| 3764 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
| 3765 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3766 socklen_t socklen = (socklen_t)(*fromlen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3767 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
|
3768 *fromlen = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3769 return result; |
| 0 | 3770 JVM_END |
| 3771 | |
| 3772 | |
| 3773 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
| 3774 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
| 3775 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3776 socklen_t socklen = (socklen_t)(*len); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3777 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
|
3778 *len = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3779 return result; |
| 0 | 3780 JVM_END |
| 3781 | |
| 3782 | |
| 3783 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
| 3784 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
| 3785 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3786 return os::sendto(fd, buf, (size_t)len, (uint)flags, to, (socklen_t)tolen); |
| 0 | 3787 JVM_END |
| 3788 | |
| 3789 | |
| 3790 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
| 3791 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
| 3792 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3793 return os::socket_available(fd, pbytes); |
| 0 | 3794 JVM_END |
| 3795 | |
| 3796 | |
| 3797 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
| 3798 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
| 3799 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3800 socklen_t socklen = (socklen_t)(*optlen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3801 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
|
3802 *optlen = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3803 return result; |
| 0 | 3804 JVM_END |
| 3805 | |
| 3806 | |
| 3807 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
| 3808 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
| 3809 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3810 return os::set_sock_opt(fd, level, optname, optval, (socklen_t)optlen); |
| 0 | 3811 JVM_END |
| 3812 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3813 |
| 0 | 3814 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) |
| 3815 JVMWrapper("JVM_GetHostName"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3816 return os::get_host_name(name, namelen); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3817 JVM_END |
| 0 | 3818 |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3819 |
| 0 | 3820 // Library support /////////////////////////////////////////////////////////////////////////// |
| 3821 | |
| 3822 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
| 3823 //%note jvm_ct | |
| 3824 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
| 3825 char ebuf[1024]; | |
| 3826 void *load_result; | |
| 3827 { | |
| 3828 ThreadToNativeFromVM ttnfvm(thread); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3829 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
| 0 | 3830 } |
| 3831 if (load_result == NULL) { | |
| 3832 char msg[1024]; | |
| 3833 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
| 3834 // Since 'ebuf' may contain a string encoded using | |
| 3835 // platform encoding scheme, we need to pass | |
| 3836 // Exceptions::unsafe_to_utf8 to the new_exception method | |
| 3837 // as the last argument. See bug 6367357. | |
| 3838 Handle h_exception = | |
| 3839 Exceptions::new_exception(thread, | |
| 3840 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
| 3841 msg, Exceptions::unsafe_to_utf8); | |
| 3842 | |
| 3843 THROW_HANDLE_0(h_exception); | |
| 3844 } | |
| 3845 return load_result; | |
| 3846 JVM_END | |
| 3847 | |
| 3848 | |
| 3849 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
| 3850 JVMWrapper("JVM_UnloadLibrary"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3851 os::dll_unload(handle); |
| 0 | 3852 JVM_END |
| 3853 | |
| 3854 | |
| 3855 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
| 3856 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3857 return os::dll_lookup(handle, name); |
| 0 | 3858 JVM_END |
| 3859 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3860 |
| 0 | 3861 // Floating point support //////////////////////////////////////////////////////////////////// |
| 3862 | |
| 3863 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
| 3864 JVMWrapper("JVM_IsNaN"); | |
| 3865 return g_isnan(a); | |
| 3866 JVM_END | |
| 3867 | |
| 3868 | |
| 3869 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
| 3870 | |
| 3871 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
| 3872 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
| 3873 return Threads::is_supported_jni_version_including_1_1(version); | |
| 3874 JVM_END | |
| 3875 | |
| 3876 | |
| 3877 // String support /////////////////////////////////////////////////////////////////////////// | |
| 3878 | |
| 3879 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
| 3880 JVMWrapper("JVM_InternString"); | |
| 3881 JvmtiVMObjectAllocEventCollector oam; | |
| 3882 if (str == NULL) return NULL; | |
| 3883 oop string = JNIHandles::resolve_non_null(str); | |
| 3884 oop result = StringTable::intern(string, CHECK_NULL); | |
| 3885 return (jstring) JNIHandles::make_local(env, result); | |
| 3886 JVM_END | |
| 3887 | |
| 3888 | |
| 3889 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
| 3890 | |
| 3891 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
| 3892 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
| 3893 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
| 3894 // that only works with java threads. | |
| 3895 | |
| 3896 | |
| 3897 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
| 3898 VM_Exit::block_if_vm_exited(); | |
| 3899 JVMWrapper("JVM_RawMonitorCreate"); | |
| 3900 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
| 3901 } | |
| 3902 | |
| 3903 | |
| 3904 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
| 3905 VM_Exit::block_if_vm_exited(); | |
| 3906 JVMWrapper("JVM_RawMonitorDestroy"); | |
| 3907 delete ((Mutex*) mon); | |
| 3908 } | |
| 3909 | |
| 3910 | |
| 3911 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
| 3912 VM_Exit::block_if_vm_exited(); | |
| 3913 JVMWrapper("JVM_RawMonitorEnter"); | |
| 3914 ((Mutex*) mon)->jvm_raw_lock(); | |
| 3915 return 0; | |
| 3916 } | |
| 3917 | |
| 3918 | |
| 3919 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
| 3920 VM_Exit::block_if_vm_exited(); | |
| 3921 JVMWrapper("JVM_RawMonitorExit"); | |
| 3922 ((Mutex*) mon)->jvm_raw_unlock(); | |
| 3923 } | |
| 3924 | |
| 3925 | |
| 3926 // Support for Serialization | |
| 3927 | |
| 3928 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
| 3929 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
| 3930 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
| 3931 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
| 3932 | |
| 3933 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
| 3934 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
| 3935 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
| 3936 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
| 3937 | |
| 3938 | |
| 3939 void initialize_converter_functions() { | |
| 3940 if (JDK_Version::is_gte_jdk14x_version()) { | |
| 3941 // These functions only exist for compatibility with 1.3.1 and earlier | |
| 3942 return; | |
| 3943 } | |
| 3944 | |
| 3945 // called from universe_post_init() | |
| 3946 assert( | |
| 3947 int_bits_to_float_fn == NULL && | |
| 3948 long_bits_to_double_fn == NULL && | |
| 3949 float_to_int_bits_fn == NULL && | |
| 3950 double_to_long_bits_fn == NULL , | |
| 3951 "initialization done twice" | |
| 3952 ); | |
| 3953 // initialize | |
| 3954 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
| 3955 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
| 3956 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
| 3957 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
| 3958 // verify | |
| 3959 assert( | |
| 3960 int_bits_to_float_fn != NULL && | |
| 3961 long_bits_to_double_fn != NULL && | |
| 3962 float_to_int_bits_fn != NULL && | |
| 3963 double_to_long_bits_fn != NULL , | |
| 3964 "initialization failed" | |
| 3965 ); | |
| 3966 } | |
| 3967 | |
| 3968 | |
| 3969 | |
| 3970 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
| 3971 | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
3972 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS) { |
| 0 | 3973 // Security Note: |
| 3974 // The Java level wrapper will perform the necessary security check allowing | |
| 3975 // us to pass the NULL as the initiating class loader. | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3976 Klass* klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); |
|
878
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
3977 |
| 0 | 3978 KlassHandle klass_handle(THREAD, klass); |
| 3979 // Check if we should initialize the class | |
| 3980 if (init && klass_handle->oop_is_instance()) { | |
| 3981 klass_handle->initialize(CHECK_NULL); | |
| 3982 } | |
| 3983 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
| 3984 } | |
| 3985 | |
| 3986 | |
| 3987 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
| 3988 | |
| 3989 #ifndef PRODUCT | |
| 3990 | |
| 3991 extern "C" { | |
| 3992 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
| 3993 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
| 3994 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
| 3995 } | |
| 3996 | |
| 3997 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
| 3998 JVMWrapper("JVM_AccessBoolVMFlag"); | |
|
12322
72b7e96c1922
8024545: make develop and notproduct flag values available in product builds
twisti
parents:
12264
diff
changeset
|
3999 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, Flag::INTERNAL); |
| 0 | 4000 JVM_END |
| 4001 | |
| 4002 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
| 4003 JVMWrapper("JVM_AccessVMIntFlag"); | |
| 4004 intx v; | |
|
12322
72b7e96c1922
8024545: make develop and notproduct flag values available in product builds
twisti
parents:
12264
diff
changeset
|
4005 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, Flag::INTERNAL); |
| 0 | 4006 *value = (jint)v; |
| 4007 return result; | |
| 4008 JVM_END | |
| 4009 | |
| 4010 | |
| 4011 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
| 4012 JVMWrapper("JVM_VMBreakPoint"); | |
| 4013 oop the_obj = JNIHandles::resolve(obj); | |
| 4014 BREAKPOINT; | |
| 4015 JVM_END | |
| 4016 | |
| 4017 | |
| 4018 #endif | |
| 4019 | |
| 4020 | |
| 4021 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4022 | |
| 4023 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
| 4024 JVMWrapper("JVM_InvokeMethod"); | |
| 4025 Handle method_handle; | |
| 4026 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
| 4027 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
| 4028 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
| 4029 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4030 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
| 4031 jobject res = JNIHandles::make_local(env, result); | |
| 4032 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4033 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
| 4034 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
| 4035 if (java_lang_Class::is_primitive(ret_type)) { | |
| 4036 // Only for primitive type vm allocates memory for java object. | |
| 4037 // See box() method. | |
| 4038 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4039 } | |
| 4040 } | |
| 4041 return res; | |
| 4042 } else { | |
| 4043 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
| 4044 } | |
| 4045 JVM_END | |
| 4046 | |
| 4047 | |
| 4048 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
| 4049 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
| 4050 oop constructor_mirror = JNIHandles::resolve(c); | |
| 4051 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4052 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
| 4053 jobject res = JNIHandles::make_local(env, result); | |
| 4054 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4055 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4056 } | |
| 4057 return res; | |
| 4058 JVM_END | |
| 4059 | |
| 4060 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4061 | |
| 4062 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
| 4063 JVMWrapper("JVM_SupportsCX8"); | |
| 4064 return VM_Version::supports_cx8(); | |
| 4065 JVM_END | |
| 4066 | |
| 4067 | |
| 4068 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
| 4069 JVMWrapper("JVM_CX8Field"); | |
| 4070 jlong res; | |
| 4071 oop o = JNIHandles::resolve(obj); | |
| 4072 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 4073 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
| 4074 | |
| 4075 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
| 4076 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
| 4077 | |
| 4078 return res == oldVal; | |
| 4079 JVM_END | |
| 4080 | |
|
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4081 // DTrace /////////////////////////////////////////////////////////////////// |
|
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4082 |
|
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4083 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
|
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4084 JVMWrapper("JVM_DTraceGetVersion"); |
|
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4085 return (jint)JVM_TRACING_DTRACE_VERSION; |
|
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4086 JVM_END |
|
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|
4087 |
|
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|
4088 JVM_ENTRY(jlong,JVM_DTraceActivate( |
|
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4089 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
|
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4090 JVM_DTraceProvider* providers)) |
|
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|
4091 JVMWrapper("JVM_DTraceActivate"); |
|
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|
4092 return DTraceJSDT::activate( |
|
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|
4093 version, module_name, providers_count, providers, CHECK_0); |
|
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|
4094 JVM_END |
|
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4095 |
|
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|
4096 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
|
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|
4097 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
|
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|
4098 return DTraceJSDT::is_probe_enabled(method); |
|
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4099 JVM_END |
|
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4100 |
|
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|
4101 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
|
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4102 JVMWrapper("JVM_DTraceDispose"); |
|
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4103 DTraceJSDT::dispose(handle); |
|
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4104 JVM_END |
|
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4105 |
|
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4106 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
|
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4107 JVMWrapper("JVM_DTraceIsSupported"); |
|
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4108 return DTraceJSDT::is_supported(); |
|
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4109 JVM_END |
|
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4110 |
| 0 | 4111 // Returns an array of all live Thread objects (VM internal JavaThreads, |
| 4112 // jvmti agent threads, and JNI attaching threads are skipped) | |
| 4113 // See CR 6404306 regarding JNI attaching threads | |
| 4114 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
| 4115 ResourceMark rm(THREAD); | |
| 4116 ThreadsListEnumerator tle(THREAD, false, false); | |
| 4117 JvmtiVMObjectAllocEventCollector oam; | |
| 4118 | |
| 4119 int num_threads = tle.num_threads(); | |
| 1142 | 4120 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
| 0 | 4121 objArrayHandle threads_ah(THREAD, r); |
| 4122 | |
| 4123 for (int i = 0; i < num_threads; i++) { | |
| 4124 Handle h = tle.get_threadObj(i); | |
| 4125 threads_ah->obj_at_put(i, h()); | |
| 4126 } | |
| 4127 | |
| 4128 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
| 4129 JVM_END | |
| 4130 | |
| 4131 | |
| 4132 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
| 4133 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
| 4134 // the corresponding entry in the given threads array | |
| 4135 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
| 4136 JVMWrapper("JVM_DumpThreads"); | |
| 4137 JvmtiVMObjectAllocEventCollector oam; | |
| 4138 | |
| 4139 // Check if threads is null | |
| 4140 if (threads == NULL) { | |
| 4141 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4142 } | |
| 4143 | |
| 4144 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
| 4145 objArrayHandle ah(THREAD, a); | |
| 4146 int num_threads = ah->length(); | |
| 4147 // check if threads is non-empty array | |
| 4148 if (num_threads == 0) { | |
| 4149 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
| 4150 } | |
| 4151 | |
| 4152 // check if threads is not an array of objects of Thread class | |
|
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4153 Klass* k = ObjArrayKlass::cast(ah->klass())->element_klass(); |
| 1142 | 4154 if (k != SystemDictionary::Thread_klass()) { |
| 0 | 4155 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
| 4156 } | |
| 4157 | |
| 4158 ResourceMark rm(THREAD); | |
| 4159 | |
| 4160 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
| 4161 for (int i = 0; i < num_threads; i++) { | |
| 4162 oop thread_obj = ah->obj_at(i); | |
| 4163 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
| 4164 thread_handle_array->append(h); | |
| 4165 } | |
| 4166 | |
| 4167 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
| 4168 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
| 4169 | |
| 4170 JVM_END | |
| 4171 | |
| 4172 // JVM monitoring and management support | |
| 4173 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
| 4174 return Management::get_jmm_interface(version); | |
| 4175 JVM_END | |
| 4176 | |
| 4177 // com.sun.tools.attach.VirtualMachine agent properties support | |
| 4178 // | |
| 4179 // Initialize the agent properties with the properties maintained in the VM | |
| 4180 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
| 4181 JVMWrapper("JVM_InitAgentProperties"); | |
| 4182 ResourceMark rm; | |
| 4183 | |
| 4184 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
| 4185 | |
| 4186 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
| 4187 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
| 4188 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
| 4189 return properties; | |
| 4190 JVM_END | |
| 4191 | |
| 4192 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
| 4193 { | |
| 4194 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
| 4195 JvmtiVMObjectAllocEventCollector oam; | |
| 4196 | |
| 4197 if (ofClass == NULL) { | |
| 4198 return NULL; | |
| 4199 } | |
| 4200 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
| 4201 // Special handling for primitive objects | |
| 4202 if (java_lang_Class::is_primitive(mirror())) { | |
| 4203 return NULL; | |
| 4204 } | |
|
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4205 Klass* k = java_lang_Class::as_Klass(mirror()); |
| 6983 | 4206 if (!k->oop_is_instance()) { |
| 0 | 4207 return NULL; |
| 4208 } | |
| 4209 instanceKlassHandle ik_h(THREAD, k); | |
| 4210 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
| 4211 if (encl_method_class_idx == 0) { | |
| 4212 return NULL; | |
| 4213 } | |
| 1142 | 4214 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
| 0 | 4215 objArrayHandle dest(THREAD, dest_o); |
|
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4216 Klass* enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); |
| 6983 | 4217 dest->obj_at_put(0, enc_k->java_mirror()); |
| 0 | 4218 int encl_method_method_idx = ik_h->enclosing_method_method_index(); |
| 4219 if (encl_method_method_idx != 0) { | |
|
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|
4220 Symbol* sym = ik_h->constants()->symbol_at( |
| 0 | 4221 extract_low_short_from_int( |
| 4222 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4223 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4224 dest->obj_at_put(1, str()); | |
|
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4225 sym = ik_h->constants()->symbol_at( |
| 0 | 4226 extract_high_short_from_int( |
| 4227 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4228 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4229 dest->obj_at_put(2, str()); | |
| 4230 } | |
| 4231 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 4232 } | |
| 4233 JVM_END | |
| 4234 | |
| 4235 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
| 4236 jint javaThreadState)) | |
| 4237 { | |
| 4238 // If new thread states are added in future JDK and VM versions, | |
| 4239 // this should check if the JDK version is compatible with thread | |
| 4240 // states supported by the VM. Return NULL if not compatible. | |
| 4241 // | |
| 4242 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4243 // to the Java thread state that the JDK supports. | |
| 4244 // | |
| 4245 | |
| 4246 typeArrayHandle values_h; | |
| 4247 switch (javaThreadState) { | |
| 4248 case JAVA_THREAD_STATE_NEW : { | |
| 4249 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4250 values_h = typeArrayHandle(THREAD, r); | |
| 4251 values_h->int_at_put(0, java_lang_Thread::NEW); | |
| 4252 break; | |
| 4253 } | |
| 4254 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4255 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4256 values_h = typeArrayHandle(THREAD, r); | |
| 4257 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
| 4258 break; | |
| 4259 } | |
| 4260 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4261 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4262 values_h = typeArrayHandle(THREAD, r); | |
| 4263 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
| 4264 break; | |
| 4265 } | |
| 4266 case JAVA_THREAD_STATE_WAITING : { | |
| 4267 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
| 4268 values_h = typeArrayHandle(THREAD, r); | |
| 4269 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
| 4270 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
| 4271 break; | |
| 4272 } | |
| 4273 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4274 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
| 4275 values_h = typeArrayHandle(THREAD, r); | |
| 4276 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
| 4277 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
| 4278 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
| 4279 break; | |
| 4280 } | |
| 4281 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4282 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4283 values_h = typeArrayHandle(THREAD, r); | |
| 4284 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
| 4285 break; | |
| 4286 } | |
| 4287 default: | |
| 4288 // Unknown state - probably incompatible JDK version | |
| 4289 return NULL; | |
| 4290 } | |
| 4291 | |
| 4292 return (jintArray) JNIHandles::make_local(env, values_h()); | |
| 4293 } | |
| 4294 JVM_END | |
| 4295 | |
| 4296 | |
| 4297 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
| 4298 jint javaThreadState, | |
| 4299 jintArray values)) | |
| 4300 { | |
| 4301 // If new thread states are added in future JDK and VM versions, | |
| 4302 // this should check if the JDK version is compatible with thread | |
| 4303 // states supported by the VM. Return NULL if not compatible. | |
| 4304 // | |
| 4305 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4306 // to the Java thread state that the JDK supports. | |
| 4307 // | |
| 4308 | |
| 4309 ResourceMark rm; | |
| 4310 | |
| 4311 // Check if threads is null | |
| 4312 if (values == NULL) { | |
| 4313 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4314 } | |
| 4315 | |
| 4316 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
| 4317 typeArrayHandle values_h(THREAD, v); | |
| 4318 | |
| 4319 objArrayHandle names_h; | |
| 4320 switch (javaThreadState) { | |
| 4321 case JAVA_THREAD_STATE_NEW : { | |
| 4322 assert(values_h->length() == 1 && | |
| 4323 values_h->int_at(0) == java_lang_Thread::NEW, | |
| 4324 "Invalid threadStatus value"); | |
| 4325 | |
| 1142 | 4326 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4327 1, /* only 1 substate */ |
| 4328 CHECK_NULL); | |
| 4329 names_h = objArrayHandle(THREAD, r); | |
| 4330 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
| 4331 names_h->obj_at_put(0, name()); | |
| 4332 break; | |
| 4333 } | |
| 4334 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4335 assert(values_h->length() == 1 && | |
| 4336 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
| 4337 "Invalid threadStatus value"); | |
| 4338 | |
| 1142 | 4339 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4340 1, /* only 1 substate */ |
| 4341 CHECK_NULL); | |
| 4342 names_h = objArrayHandle(THREAD, r); | |
| 4343 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
| 4344 names_h->obj_at_put(0, name()); | |
| 4345 break; | |
| 4346 } | |
| 4347 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4348 assert(values_h->length() == 1 && | |
| 4349 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
| 4350 "Invalid threadStatus value"); | |
| 4351 | |
| 1142 | 4352 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4353 1, /* only 1 substate */ |
| 4354 CHECK_NULL); | |
| 4355 names_h = objArrayHandle(THREAD, r); | |
| 4356 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
| 4357 names_h->obj_at_put(0, name()); | |
| 4358 break; | |
| 4359 } | |
| 4360 case JAVA_THREAD_STATE_WAITING : { | |
| 4361 assert(values_h->length() == 2 && | |
| 4362 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
| 4363 values_h->int_at(1) == java_lang_Thread::PARKED, | |
| 4364 "Invalid threadStatus value"); | |
| 1142 | 4365 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4366 2, /* number of substates */ |
| 4367 CHECK_NULL); | |
| 4368 names_h = objArrayHandle(THREAD, r); | |
| 4369 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
| 4370 CHECK_NULL); | |
| 4371 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
| 4372 CHECK_NULL); | |
| 4373 names_h->obj_at_put(0, name0()); | |
| 4374 names_h->obj_at_put(1, name1()); | |
| 4375 break; | |
| 4376 } | |
| 4377 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4378 assert(values_h->length() == 3 && | |
| 4379 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
| 4380 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
| 4381 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
| 4382 "Invalid threadStatus value"); | |
| 1142 | 4383 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4384 3, /* number of substates */ |
| 4385 CHECK_NULL); | |
| 4386 names_h = objArrayHandle(THREAD, r); | |
| 4387 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
| 4388 CHECK_NULL); | |
| 4389 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
| 4390 CHECK_NULL); | |
| 4391 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
| 4392 CHECK_NULL); | |
| 4393 names_h->obj_at_put(0, name0()); | |
| 4394 names_h->obj_at_put(1, name1()); | |
| 4395 names_h->obj_at_put(2, name2()); | |
| 4396 break; | |
| 4397 } | |
| 4398 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4399 assert(values_h->length() == 1 && | |
| 4400 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
| 4401 "Invalid threadStatus value"); | |
| 1142 | 4402 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4403 1, /* only 1 substate */ |
| 4404 CHECK_NULL); | |
| 4405 names_h = objArrayHandle(THREAD, r); | |
| 4406 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
| 4407 names_h->obj_at_put(0, name()); | |
| 4408 break; | |
| 4409 } | |
| 4410 default: | |
| 4411 // Unknown state - probably incompatible JDK version | |
| 4412 return NULL; | |
| 4413 } | |
| 4414 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
| 4415 } | |
| 4416 JVM_END | |
| 4417 | |
| 4418 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
| 4419 { | |
| 4420 memset(info, 0, sizeof(info_size)); | |
| 4421 | |
| 4422 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
| 4423 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4424 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4425 | |
| 4426 // when we add a new capability in the jvm_version_info struct, we should also | |
| 4427 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
| 4428 // counter defined in runtimeService.cpp. | |
| 4429 info->is_attachable = AttachListener::is_attach_supported(); | |
| 4430 } | |
| 4431 JVM_END |