Mercurial > hg > truffle
annotate src/share/vm/prims/jvm.cpp @ 7983:24a91505f9d5
8006949: Update hotspot for MethodParameters format change
8006907: Hotspot should reject classfiles with multiple MethodParameters attributes
Summary: Update to Hotspot's processing of MethodParameters attributes in classfiles
Reviewed-by: coleenp, jrose
| author | emc |
|---|---|
| date | Mon, 04 Feb 2013 13:05:32 -0500 |
| parents | 815957d0203e |
| children | 41d73c9b30a8 |
| 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" | |
| 33 #include "memory/oopFactory.hpp" | |
| 34 #include "memory/universe.inline.hpp" | |
| 3938 | 35 #include "oops/fieldStreams.hpp" |
| 1972 | 36 #include "oops/instanceKlass.hpp" |
| 37 #include "oops/objArrayKlass.hpp" | |
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38 #include "oops/method.hpp" |
| 1972 | 39 #include "prims/jvm.h" |
| 40 #include "prims/jvm_misc.hpp" | |
| 41 #include "prims/jvmtiExport.hpp" | |
| 42 #include "prims/jvmtiThreadState.hpp" | |
| 43 #include "prims/nativeLookup.hpp" | |
| 44 #include "prims/privilegedStack.hpp" | |
| 45 #include "runtime/arguments.hpp" | |
| 46 #include "runtime/dtraceJSDT.hpp" | |
| 47 #include "runtime/handles.inline.hpp" | |
| 48 #include "runtime/init.hpp" | |
| 49 #include "runtime/interfaceSupport.hpp" | |
| 50 #include "runtime/java.hpp" | |
| 51 #include "runtime/javaCalls.hpp" | |
| 52 #include "runtime/jfieldIDWorkaround.hpp" | |
| 53 #include "runtime/os.hpp" | |
| 54 #include "runtime/perfData.hpp" | |
| 55 #include "runtime/reflection.hpp" | |
| 56 #include "runtime/vframe.hpp" | |
| 57 #include "runtime/vm_operations.hpp" | |
| 58 #include "services/attachListener.hpp" | |
| 59 #include "services/management.hpp" | |
| 60 #include "services/threadService.hpp" | |
| 61 #include "utilities/copy.hpp" | |
| 62 #include "utilities/defaultStream.hpp" | |
| 63 #include "utilities/dtrace.hpp" | |
| 64 #include "utilities/events.hpp" | |
| 65 #include "utilities/histogram.hpp" | |
| 66 #include "utilities/top.hpp" | |
| 67 #include "utilities/utf8.hpp" | |
| 68 #ifdef TARGET_OS_FAMILY_linux | |
| 69 # include "jvm_linux.h" | |
| 70 #endif | |
| 71 #ifdef TARGET_OS_FAMILY_solaris | |
| 72 # include "jvm_solaris.h" | |
| 73 #endif | |
| 74 #ifdef TARGET_OS_FAMILY_windows | |
| 75 # include "jvm_windows.h" | |
| 76 #endif | |
| 3960 | 77 #ifdef TARGET_OS_FAMILY_bsd |
| 78 # include "jvm_bsd.h" | |
| 79 #endif | |
| 1972 | 80 |
| 0 | 81 #include <errno.h> |
| 82 | |
| 4006 | 83 #ifndef USDT2 |
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84 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__begin, long long); |
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85 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__end, int); |
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86 HS_DTRACE_PROBE_DECL0(hotspot, thread__yield); |
| 4006 | 87 #endif /* !USDT2 */ |
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88 |
| 0 | 89 /* |
| 90 NOTE about use of any ctor or function call that can trigger a safepoint/GC: | |
| 91 such ctors and calls MUST NOT come between an oop declaration/init and its | |
| 92 usage because if objects are move this may cause various memory stomps, bus | |
| 93 errors and segfaults. Here is a cookbook for causing so called "naked oop | |
| 94 failures": | |
| 95 | |
| 96 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> { | |
| 97 JVMWrapper("JVM_GetClassDeclaredFields"); | |
| 98 | |
| 99 // Object address to be held directly in mirror & not visible to GC | |
| 100 oop mirror = JNIHandles::resolve_non_null(ofClass); | |
| 101 | |
| 102 // If this ctor can hit a safepoint, moving objects around, then | |
| 103 ComplexConstructor foo; | |
| 104 | |
| 105 // Boom! mirror may point to JUNK instead of the intended object | |
| 106 (some dereference of mirror) | |
| 107 | |
| 108 // Here's another call that may block for GC, making mirror stale | |
| 109 MutexLocker ml(some_lock); | |
| 110 | |
| 111 // And here's an initializer that can result in a stale oop | |
| 112 // all in one step. | |
| 113 oop o = call_that_can_throw_exception(TRAPS); | |
| 114 | |
| 115 | |
| 116 The solution is to keep the oop declaration BELOW the ctor or function | |
| 117 call that might cause a GC, do another resolve to reassign the oop, or | |
| 118 consider use of a Handle instead of an oop so there is immunity from object | |
| 119 motion. But note that the "QUICK" entries below do not have a handlemark | |
| 120 and thus can only support use of handles passed in. | |
| 121 */ | |
| 122 | |
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123 static void trace_class_resolution_impl(Klass* to_class, TRAPS) { |
| 0 | 124 ResourceMark rm; |
| 125 int line_number = -1; | |
| 126 const char * source_file = NULL; | |
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127 const char * trace = "explicit"; |
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128 InstanceKlass* caller = NULL; |
| 0 | 129 JavaThread* jthread = JavaThread::current(); |
| 130 if (jthread->has_last_Java_frame()) { | |
| 131 vframeStream vfst(jthread); | |
| 132 | |
| 133 // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames | |
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134 TempNewSymbol access_controller = SymbolTable::new_symbol("java/security/AccessController", CHECK); |
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135 Klass* access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); |
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136 TempNewSymbol privileged_action = SymbolTable::new_symbol("java/security/PrivilegedAction", CHECK); |
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137 Klass* privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); |
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138 |
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139 Method* last_caller = NULL; |
| 0 | 140 |
| 141 while (!vfst.at_end()) { | |
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142 Method* m = vfst.method(); |
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143 if (!vfst.method()->method_holder()->is_subclass_of(SystemDictionary::ClassLoader_klass())&& |
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144 !vfst.method()->method_holder()->is_subclass_of(access_controller_klass) && |
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145 !vfst.method()->method_holder()->is_subclass_of(privileged_action_klass)) { |
| 0 | 146 break; |
| 147 } | |
| 148 last_caller = m; | |
| 149 vfst.next(); | |
| 150 } | |
| 151 // if this is called from Class.forName0 and that is called from Class.forName, | |
| 152 // then print the caller of Class.forName. If this is Class.loadClass, then print | |
| 153 // that caller, otherwise keep quiet since this should be picked up elsewhere. | |
| 154 bool found_it = false; | |
| 155 if (!vfst.at_end() && | |
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156 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
| 0 | 157 vfst.method()->name() == vmSymbols::forName0_name()) { |
| 158 vfst.next(); | |
| 159 if (!vfst.at_end() && | |
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160 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
| 0 | 161 vfst.method()->name() == vmSymbols::forName_name()) { |
| 162 vfst.next(); | |
| 163 found_it = true; | |
| 164 } | |
| 165 } else if (last_caller != NULL && | |
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166 last_caller->method_holder()->name() == |
| 0 | 167 vmSymbols::java_lang_ClassLoader() && |
| 168 (last_caller->name() == vmSymbols::loadClassInternal_name() || | |
| 169 last_caller->name() == vmSymbols::loadClass_name())) { | |
| 170 found_it = true; | |
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171 } else if (!vfst.at_end()) { |
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172 if (vfst.method()->is_native()) { |
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173 // JNI call |
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174 found_it = true; |
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175 } |
| 0 | 176 } |
| 177 if (found_it && !vfst.at_end()) { | |
| 178 // found the caller | |
| 179 caller = vfst.method()->method_holder(); | |
| 180 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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181 if (line_number == -1) { |
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182 // show method name if it's a native method |
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183 trace = vfst.method()->name_and_sig_as_C_string(); |
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184 } |
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185 Symbol* s = caller->source_file_name(); |
| 0 | 186 if (s != NULL) { |
| 187 source_file = s->as_C_string(); | |
| 188 } | |
| 189 } | |
| 190 } | |
| 191 if (caller != NULL) { | |
| 192 if (to_class != caller) { | |
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193 const char * from = caller->external_name(); |
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194 const char * to = to_class->external_name(); |
| 0 | 195 // print in a single call to reduce interleaving between threads |
| 196 if (source_file != NULL) { | |
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197 tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace); |
| 0 | 198 } else { |
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199 tty->print("RESOLVE %s %s (%s)\n", from, to, trace); |
| 0 | 200 } |
| 201 } | |
| 202 } | |
| 203 } | |
| 204 | |
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205 void trace_class_resolution(Klass* to_class) { |
| 0 | 206 EXCEPTION_MARK; |
| 207 trace_class_resolution_impl(to_class, THREAD); | |
| 208 if (HAS_PENDING_EXCEPTION) { | |
| 209 CLEAR_PENDING_EXCEPTION; | |
| 210 } | |
| 211 } | |
| 212 | |
| 213 // Wrapper to trace JVM functions | |
| 214 | |
| 215 #ifdef ASSERT | |
| 216 class JVMTraceWrapper : public StackObj { | |
| 217 public: | |
| 218 JVMTraceWrapper(const char* format, ...) { | |
| 219 if (TraceJVMCalls) { | |
| 220 va_list ap; | |
| 221 va_start(ap, format); | |
| 222 tty->print("JVM "); | |
| 223 tty->vprint_cr(format, ap); | |
| 224 va_end(ap); | |
| 225 } | |
| 226 } | |
| 227 }; | |
| 228 | |
| 229 Histogram* JVMHistogram; | |
| 230 volatile jint JVMHistogram_lock = 0; | |
| 231 | |
| 232 class JVMHistogramElement : public HistogramElement { | |
| 233 public: | |
| 234 JVMHistogramElement(const char* name); | |
| 235 }; | |
| 236 | |
| 237 JVMHistogramElement::JVMHistogramElement(const char* elementName) { | |
| 238 _name = elementName; | |
| 239 uintx count = 0; | |
| 240 | |
| 241 while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) { | |
| 242 while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) { | |
| 243 count +=1; | |
| 244 if ( (WarnOnStalledSpinLock > 0) | |
| 245 && (count % WarnOnStalledSpinLock == 0)) { | |
| 246 warning("JVMHistogram_lock seems to be stalled"); | |
| 247 } | |
| 248 } | |
| 249 } | |
| 250 | |
| 251 if(JVMHistogram == NULL) | |
| 252 JVMHistogram = new Histogram("JVM Call Counts",100); | |
| 253 | |
| 254 JVMHistogram->add_element(this); | |
| 255 Atomic::dec(&JVMHistogram_lock); | |
| 256 } | |
| 257 | |
| 258 #define JVMCountWrapper(arg) \ | |
| 259 static JVMHistogramElement* e = new JVMHistogramElement(arg); \ | |
| 260 if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen! | |
| 261 | |
| 262 #define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) | |
| 263 #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) | |
| 264 #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) | |
| 265 #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) | |
| 266 #else | |
| 267 #define JVMWrapper(arg1) | |
| 268 #define JVMWrapper2(arg1, arg2) | |
| 269 #define JVMWrapper3(arg1, arg2, arg3) | |
| 270 #define JVMWrapper4(arg1, arg2, arg3, arg4) | |
| 271 #endif | |
| 272 | |
| 273 | |
| 274 // Interface version ///////////////////////////////////////////////////////////////////// | |
| 275 | |
| 276 | |
| 277 JVM_LEAF(jint, JVM_GetInterfaceVersion()) | |
| 278 return JVM_INTERFACE_VERSION; | |
| 279 JVM_END | |
| 280 | |
| 281 | |
| 282 // java.lang.System ////////////////////////////////////////////////////////////////////// | |
| 283 | |
| 284 | |
| 285 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored)) | |
| 286 JVMWrapper("JVM_CurrentTimeMillis"); | |
| 287 return os::javaTimeMillis(); | |
| 288 JVM_END | |
| 289 | |
| 290 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored)) | |
| 291 JVMWrapper("JVM_NanoTime"); | |
| 292 return os::javaTimeNanos(); | |
| 293 JVM_END | |
| 294 | |
| 295 | |
| 296 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, | |
| 297 jobject dst, jint dst_pos, jint length)) | |
| 298 JVMWrapper("JVM_ArrayCopy"); | |
| 299 // Check if we have null pointers | |
| 300 if (src == NULL || dst == NULL) { | |
| 301 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 302 } | |
| 303 arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); | |
| 304 arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); | |
| 305 assert(s->is_oop(), "JVM_ArrayCopy: src not an oop"); | |
| 306 assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); | |
| 307 // Do copy | |
| 6983 | 308 s->klass()->copy_array(s, src_pos, d, dst_pos, length, thread); |
| 0 | 309 JVM_END |
| 310 | |
| 311 | |
| 312 static void set_property(Handle props, const char* key, const char* value, TRAPS) { | |
| 313 JavaValue r(T_OBJECT); | |
| 314 // public synchronized Object put(Object key, Object value); | |
| 315 HandleMark hm(THREAD); | |
| 316 Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK); | |
| 317 Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK); | |
| 318 JavaCalls::call_virtual(&r, | |
| 319 props, | |
| 1142 | 320 KlassHandle(THREAD, SystemDictionary::Properties_klass()), |
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321 vmSymbols::put_name(), |
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322 vmSymbols::object_object_object_signature(), |
| 0 | 323 key_str, |
| 324 value_str, | |
| 325 THREAD); | |
| 326 } | |
| 327 | |
| 328 | |
| 329 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties)); | |
| 330 | |
| 331 | |
| 332 JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties)) | |
| 333 JVMWrapper("JVM_InitProperties"); | |
| 334 ResourceMark rm; | |
| 335 | |
| 336 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
| 337 | |
| 338 // System property list includes both user set via -D option and | |
| 339 // jvm system specific properties. | |
| 340 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
| 341 PUTPROP(props, p->key(), p->value()); | |
| 342 } | |
| 343 | |
| 344 // Convert the -XX:MaxDirectMemorySize= command line flag | |
| 345 // to the sun.nio.MaxDirectMemorySize property. | |
| 346 // Do this after setting user properties to prevent people | |
| 347 // from setting the value with a -D option, as requested. | |
| 348 { | |
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349 if (FLAG_IS_DEFAULT(MaxDirectMemorySize)) { |
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350 PUTPROP(props, "sun.nio.MaxDirectMemorySize", "-1"); |
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351 } else { |
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352 char as_chars[256]; |
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353 jio_snprintf(as_chars, sizeof(as_chars), UINTX_FORMAT, MaxDirectMemorySize); |
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354 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); |
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355 } |
| 0 | 356 } |
| 357 | |
| 358 // JVM monitoring and management support | |
| 359 // Add the sun.management.compiler property for the compiler's name | |
| 360 { | |
| 361 #undef CSIZE | |
| 362 #if defined(_LP64) || defined(_WIN64) | |
| 363 #define CSIZE "64-Bit " | |
| 364 #else | |
| 365 #define CSIZE | |
| 366 #endif // 64bit | |
| 367 | |
| 368 #ifdef TIERED | |
| 369 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; | |
| 370 #else | |
| 371 #if defined(COMPILER1) | |
| 372 const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; | |
| 373 #elif defined(COMPILER2) | |
| 374 const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; | |
| 375 #else | |
| 376 const char* compiler_name = ""; | |
| 377 #endif // compilers | |
| 378 #endif // TIERED | |
| 379 | |
| 380 if (*compiler_name != '\0' && | |
| 381 (Arguments::mode() != Arguments::_int)) { | |
| 382 PUTPROP(props, "sun.management.compiler", compiler_name); | |
| 383 } | |
| 384 } | |
| 385 | |
| 386 return properties; | |
| 387 JVM_END | |
| 388 | |
| 389 | |
| 390 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// | |
| 391 | |
| 392 extern volatile jint vm_created; | |
| 393 | |
| 394 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
| 395 if (vm_created != 0 && (code == 0)) { | |
| 396 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
| 397 Universe::run_finalizers_on_exit(); | |
| 398 } | |
| 399 before_exit(thread); | |
| 400 vm_exit(code); | |
| 401 JVM_END | |
| 402 | |
| 403 | |
| 404 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
| 405 before_exit(thread); | |
| 406 vm_exit(code); | |
| 407 JVM_END | |
| 408 | |
| 409 | |
| 410 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
| 411 register_on_exit_function(func); | |
| 412 JVM_END | |
| 413 | |
| 414 | |
| 415 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
| 416 JVMWrapper("JVM_GC"); | |
| 417 if (!DisableExplicitGC) { | |
| 418 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
| 419 } | |
| 420 JVM_END | |
| 421 | |
| 422 | |
| 423 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
| 424 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
| 425 return Universe::heap()->millis_since_last_gc(); | |
| 426 JVM_END | |
| 427 | |
| 428 | |
| 429 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
| 430 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
| 431 JVM_END | |
| 432 | |
| 433 | |
| 434 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
| 435 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
| 436 JVM_END | |
| 437 | |
| 438 static inline jlong convert_size_t_to_jlong(size_t val) { | |
| 439 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
| 440 NOT_LP64 (return (jlong)val;) | |
| 441 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
| 442 } | |
| 443 | |
| 444 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
| 445 JVMWrapper("JVM_TotalMemory"); | |
| 446 size_t n = Universe::heap()->capacity(); | |
| 447 return convert_size_t_to_jlong(n); | |
| 448 JVM_END | |
| 449 | |
| 450 | |
| 451 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
| 452 JVMWrapper("JVM_FreeMemory"); | |
| 453 CollectedHeap* ch = Universe::heap(); | |
|
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454 size_t n; |
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455 { |
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456 MutexLocker x(Heap_lock); |
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457 n = ch->capacity() - ch->used(); |
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458 } |
| 0 | 459 return convert_size_t_to_jlong(n); |
| 460 JVM_END | |
| 461 | |
| 462 | |
| 463 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
| 464 JVMWrapper("JVM_MaxMemory"); | |
| 465 size_t n = Universe::heap()->max_capacity(); | |
| 466 return convert_size_t_to_jlong(n); | |
| 467 JVM_END | |
| 468 | |
| 469 | |
| 470 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
| 471 JVMWrapper("JVM_ActiveProcessorCount"); | |
| 472 return os::active_processor_count(); | |
| 473 JVM_END | |
| 474 | |
| 475 | |
| 476 | |
| 477 // java.lang.Throwable ////////////////////////////////////////////////////// | |
| 478 | |
| 479 | |
| 480 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
| 481 JVMWrapper("JVM_FillInStackTrace"); | |
| 482 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
| 483 java_lang_Throwable::fill_in_stack_trace(exception); | |
| 484 JVM_END | |
| 485 | |
| 486 | |
| 487 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
| 488 JVMWrapper("JVM_GetStackTraceDepth"); | |
| 489 oop exception = JNIHandles::resolve(throwable); | |
| 490 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
| 491 JVM_END | |
| 492 | |
| 493 | |
| 494 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
| 495 JVMWrapper("JVM_GetStackTraceElement"); | |
| 496 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
| 497 oop exception = JNIHandles::resolve(throwable); | |
| 498 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
| 499 return JNIHandles::make_local(env, element); | |
| 500 JVM_END | |
| 501 | |
| 502 | |
| 503 // java.lang.Object /////////////////////////////////////////////// | |
| 504 | |
| 505 | |
| 506 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
| 507 JVMWrapper("JVM_IHashCode"); | |
| 508 // as implemented in the classic virtual machine; return 0 if object is NULL | |
| 509 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
| 510 JVM_END | |
| 511 | |
| 512 | |
| 513 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
| 514 JVMWrapper("JVM_MonitorWait"); | |
| 515 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 516 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
| 517 if (JvmtiExport::should_post_monitor_wait()) { | |
| 518 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
| 519 } | |
| 520 ObjectSynchronizer::wait(obj, ms, CHECK); | |
| 521 JVM_END | |
| 522 | |
| 523 | |
| 524 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
| 525 JVMWrapper("JVM_MonitorNotify"); | |
| 526 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 527 ObjectSynchronizer::notify(obj, CHECK); | |
| 528 JVM_END | |
| 529 | |
| 530 | |
| 531 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
| 532 JVMWrapper("JVM_MonitorNotifyAll"); | |
| 533 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 534 ObjectSynchronizer::notifyall(obj, CHECK); | |
| 535 JVM_END | |
| 536 | |
| 537 | |
| 538 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
| 539 JVMWrapper("JVM_Clone"); | |
| 540 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 541 const KlassHandle klass (THREAD, obj->klass()); | |
| 542 JvmtiVMObjectAllocEventCollector oam; | |
| 543 | |
| 544 #ifdef ASSERT | |
| 545 // Just checking that the cloneable flag is set correct | |
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546 if (obj->is_array()) { |
| 0 | 547 guarantee(klass->is_cloneable(), "all arrays are cloneable"); |
| 548 } else { | |
| 549 guarantee(obj->is_instance(), "should be instanceOop"); | |
| 1142 | 550 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
| 0 | 551 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
| 552 } | |
| 553 #endif | |
| 554 | |
| 555 // Check if class of obj supports the Cloneable interface. | |
| 556 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
| 557 if (!klass->is_cloneable()) { | |
| 558 ResourceMark rm(THREAD); | |
| 559 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
| 560 } | |
| 561 | |
| 562 // Make shallow object copy | |
| 563 const int size = obj->size(); | |
| 564 oop new_obj = NULL; | |
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565 if (obj->is_array()) { |
| 0 | 566 const int length = ((arrayOop)obj())->length(); |
| 567 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
| 568 } else { | |
| 569 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
| 570 } | |
| 571 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
| 572 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
| 573 // be suspended in the middle of copying the pointer and end up with parts | |
| 574 // of two different pointers in the field. Subsequent dereferences will crash. | |
| 575 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
| 576 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
| 577 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
| 578 // The same is true of StubRoutines::object_copy and the various oop_copy | |
| 579 // variants, and of the code generated by the inline_native_clone intrinsic. | |
| 580 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
| 581 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
| 582 (size_t)align_object_size(size) / HeapWordsPerLong); | |
| 583 // Clear the header | |
| 584 new_obj->init_mark(); | |
| 585 | |
| 586 // Store check (mark entire object and let gc sort it out) | |
| 587 BarrierSet* bs = Universe::heap()->barrier_set(); | |
| 588 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
| 589 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
| 590 | |
| 591 // Caution: this involves a java upcall, so the clone should be | |
| 592 // "gc-robust" by this stage. | |
| 593 if (klass->has_finalizer()) { | |
| 594 assert(obj->is_instance(), "should be instanceOop"); | |
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595 new_obj = InstanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); |
| 0 | 596 } |
| 597 | |
| 598 return JNIHandles::make_local(env, oop(new_obj)); | |
| 599 JVM_END | |
| 600 | |
| 601 // java.lang.Compiler //////////////////////////////////////////////////// | |
| 602 | |
| 603 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
| 604 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
| 605 // functions are all silently ignored unless JVM warnings are printed. | |
| 606 | |
| 607 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
| 608 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
| 609 JVM_END | |
| 610 | |
| 611 | |
| 612 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
| 613 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
| 614 return JNI_FALSE; | |
| 615 JVM_END | |
| 616 | |
| 617 | |
| 618 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
| 619 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
| 620 return JNI_FALSE; | |
| 621 JVM_END | |
| 622 | |
| 623 | |
| 624 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
| 625 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
| 626 return JNI_FALSE; | |
| 627 JVM_END | |
| 628 | |
| 629 | |
| 630 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
| 631 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
| 632 return NULL; | |
| 633 JVM_END | |
| 634 | |
| 635 | |
| 636 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
| 637 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
| 638 JVM_END | |
| 639 | |
| 640 | |
| 641 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
| 642 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
| 643 JVM_END | |
| 644 | |
| 645 | |
| 646 | |
| 647 // Error message support ////////////////////////////////////////////////////// | |
| 648 | |
| 649 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
| 650 JVMWrapper("JVM_GetLastErrorString"); | |
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651 return (jint)os::lasterror(buf, len); |
| 0 | 652 JVM_END |
| 653 | |
| 654 | |
| 655 // java.io.File /////////////////////////////////////////////////////////////// | |
| 656 | |
| 657 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
| 658 JVMWrapper2("JVM_NativePath (%s)", path); | |
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659 return os::native_path(path); |
| 0 | 660 JVM_END |
| 661 | |
| 662 | |
| 663 // Misc. class handling /////////////////////////////////////////////////////////// | |
| 664 | |
| 665 | |
| 666 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
| 667 JVMWrapper("JVM_GetCallerClass"); | |
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668 Klass* k = thread->security_get_caller_class(depth); |
| 6983 | 669 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, k->java_mirror()); |
| 0 | 670 JVM_END |
| 671 | |
| 672 | |
| 673 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
| 674 JVMWrapper("JVM_FindPrimitiveClass"); | |
| 675 oop mirror = NULL; | |
| 676 BasicType t = name2type(utf); | |
| 677 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
| 678 mirror = Universe::java_mirror(t); | |
| 679 } | |
| 680 if (mirror == NULL) { | |
| 681 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
| 682 } else { | |
| 683 return (jclass) JNIHandles::make_local(env, mirror); | |
| 684 } | |
| 685 JVM_END | |
| 686 | |
| 687 | |
| 688 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
| 689 JVMWrapper("JVM_ResolveClass"); | |
| 690 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
| 691 JVM_END | |
| 692 | |
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693 |
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694 // Returns a class loaded by the bootstrap class loader; or null |
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695 // if not found. ClassNotFoundException is not thrown. |
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696 // |
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697 // Rationale behind JVM_FindClassFromBootLoader |
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698 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
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699 // b> because of (a) java.dll has a direct dependecy on the unexported |
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700 // private symbol "_JVM_FindClassFromClassLoader@20". |
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701 // c> the launcher cannot use the private symbol as it dynamically opens |
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702 // the entry point, so if something changes, the launcher will fail |
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703 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
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704 // stable exported interface. |
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705 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
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706 // signature to change from _JVM_FindClassFromClassLoader@20 to |
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707 // JVM_FindClassFromClassLoader and will not be backward compatible |
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708 // with older JDKs. |
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709 // Thus a public/stable exported entry point is the right solution, |
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710 // public here means public in linker semantics, and is exported only |
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711 // to the JDK, and is not intended to be a public API. |
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712 |
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713 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
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714 const char* name)) |
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715 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
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716 |
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717 // Java libraries should ensure that name is never null... |
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718 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
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719 // It's impossible to create this class; the name cannot fit |
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720 // into the constant pool. |
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721 return NULL; |
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|
722 } |
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723 |
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724 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
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725 Klass* k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
|
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726 if (k == NULL) { |
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727 return NULL; |
|
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|
728 } |
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|
729 |
|
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|
730 if (TraceClassResolution) { |
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731 trace_class_resolution(k); |
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732 } |
| 6983 | 733 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
|
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734 JVM_END |
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735 |
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|
736 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
|
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737 jboolean init, jobject loader, |
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738 jboolean throwError)) |
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739 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
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740 throwError ? "error" : "exception"); |
| 388 | 741 // Java libraries should ensure that name is never null... |
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742 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
| 388 | 743 // It's impossible to create this class; the name cannot fit |
| 744 // into the constant pool. | |
| 745 if (throwError) { | |
| 746 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 747 } else { | |
| 748 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
| 749 } | |
| 750 } | |
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751 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
| 388 | 752 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
| 753 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 754 Handle(), throwError, THREAD); | |
| 755 | |
| 756 if (TraceClassResolution && result != NULL) { | |
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757 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
| 388 | 758 } |
| 759 return result; | |
| 0 | 760 JVM_END |
| 761 | |
| 762 | |
| 763 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
| 764 jboolean init, jclass from)) | |
| 765 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
|
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766 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
| 0 | 767 // It's impossible to create this class; the name cannot fit |
| 768 // into the constant pool. | |
| 769 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 770 } | |
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771 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
| 0 | 772 oop from_class_oop = JNIHandles::resolve(from); |
|
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773 Klass* from_class = (from_class_oop == NULL) |
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774 ? (Klass*)NULL |
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775 : java_lang_Class::as_Klass(from_class_oop); |
| 0 | 776 oop class_loader = NULL; |
| 777 oop protection_domain = NULL; | |
| 778 if (from_class != NULL) { | |
| 6983 | 779 class_loader = from_class->class_loader(); |
| 780 protection_domain = from_class->protection_domain(); | |
| 0 | 781 } |
| 782 Handle h_loader(THREAD, class_loader); | |
| 783 Handle h_prot (THREAD, protection_domain); | |
| 784 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 785 h_prot, true, thread); | |
| 786 | |
| 787 if (TraceClassResolution && result != NULL) { | |
| 788 // this function is generally only used for class loading during verification. | |
| 789 ResourceMark rm; | |
| 790 oop from_mirror = JNIHandles::resolve_non_null(from); | |
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791 Klass* from_class = java_lang_Class::as_Klass(from_mirror); |
| 6983 | 792 const char * from_name = from_class->external_name(); |
| 0 | 793 |
| 794 oop mirror = JNIHandles::resolve_non_null(result); | |
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795 Klass* to_class = java_lang_Class::as_Klass(mirror); |
| 6983 | 796 const char * to = to_class->external_name(); |
| 0 | 797 tty->print("RESOLVE %s %s (verification)\n", from_name, to); |
| 798 } | |
| 799 | |
| 800 return result; | |
| 801 JVM_END | |
| 802 | |
| 803 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
| 804 if (loader.is_null()) { | |
| 805 return; | |
| 806 } | |
| 807 | |
| 808 // check whether the current caller thread holds the lock or not. | |
| 809 // If not, increment the corresponding counter | |
| 810 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
| 811 ObjectSynchronizer::owner_self) { | |
| 812 counter->inc(); | |
| 813 } | |
| 814 } | |
| 815 | |
| 816 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
|
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817 // and JVM_DefineClassWithSourceCond() |
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818 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
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819 jobject loader, const jbyte *buf, |
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820 jsize len, jobject pd, const char *source, |
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821 jboolean verify, TRAPS) { |
|
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822 if (source == NULL) source = "__JVM_DefineClass__"; |
| 0 | 823 |
|
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824 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
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825 JavaThread* jt = (JavaThread*) THREAD; |
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826 |
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827 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
|
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828 ClassLoader::perf_define_appclass_selftime(), |
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829 ClassLoader::perf_define_appclasses(), |
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830 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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|
831 jt->get_thread_stat()->perf_timers_addr(), |
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832 PerfClassTraceTime::DEFINE_CLASS); |
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|
833 |
|
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|
834 if (UsePerfData) { |
|
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|
835 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
|
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|
836 } |
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837 |
| 0 | 838 // Since exceptions can be thrown, class initialization can take place |
| 839 // if name is NULL no check for class name in .class stream has to be made. | |
|
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840 TempNewSymbol class_name = NULL; |
| 0 | 841 if (name != NULL) { |
| 842 const int str_len = (int)strlen(name); | |
|
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843 if (str_len > Symbol::max_length()) { |
| 0 | 844 // It's impossible to create this class; the name cannot fit |
| 845 // into the constant pool. | |
| 846 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 847 } | |
|
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848 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
| 0 | 849 } |
| 850 | |
| 851 ResourceMark rm(THREAD); | |
| 852 ClassFileStream st((u1*) buf, len, (char *)source); | |
| 853 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
| 854 if (UsePerfData) { | |
| 855 is_lock_held_by_thread(class_loader, | |
| 856 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
| 857 THREAD); | |
| 858 } | |
| 859 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
|
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860 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, |
| 0 | 861 protection_domain, &st, |
|
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|
862 verify != 0, |
| 0 | 863 CHECK_NULL); |
| 864 | |
| 865 if (TraceClassResolution && k != NULL) { | |
| 866 trace_class_resolution(k); | |
| 867 } | |
| 868 | |
| 6983 | 869 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
| 0 | 870 } |
| 871 | |
| 872 | |
| 873 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
| 874 JVMWrapper2("JVM_DefineClass %s", name); | |
| 875 | |
|
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876 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
| 0 | 877 JVM_END |
| 878 | |
| 879 | |
| 880 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
| 881 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
| 882 | |
|
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883 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
|
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884 JVM_END |
|
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|
885 |
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886 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
|
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887 jobject loader, const jbyte *buf, |
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888 jsize len, jobject pd, |
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889 const char *source, jboolean verify)) |
|
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890 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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|
891 |
|
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892 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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|
893 JVM_END |
| 0 | 894 |
| 895 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
| 896 JVMWrapper("JVM_FindLoadedClass"); | |
| 897 ResourceMark rm(THREAD); | |
| 898 | |
| 899 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 900 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
| 901 | |
| 902 const char* str = java_lang_String::as_utf8_string(string()); | |
| 903 // Sanity check, don't expect null | |
| 904 if (str == NULL) return NULL; | |
| 905 | |
| 906 const int str_len = (int)strlen(str); | |
|
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907 if (str_len > Symbol::max_length()) { |
| 0 | 908 // It's impossible to create this class; the name cannot fit |
| 909 // into the constant pool. | |
| 910 return NULL; | |
| 911 } | |
|
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912 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
| 0 | 913 |
| 914 // Security Note: | |
| 915 // The Java level wrapper will perform the necessary security check allowing | |
| 916 // us to pass the NULL as the initiating class loader. | |
| 917 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
| 918 if (UsePerfData) { | |
| 919 is_lock_held_by_thread(h_loader, | |
| 920 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
| 921 THREAD); | |
| 922 } | |
| 923 | |
|
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924 Klass* k = SystemDictionary::find_instance_or_array_klass(klass_name, |
| 0 | 925 h_loader, |
| 926 Handle(), | |
| 927 CHECK_NULL); | |
| 928 | |
| 929 return (k == NULL) ? NULL : | |
| 6983 | 930 (jclass) JNIHandles::make_local(env, k->java_mirror()); |
| 0 | 931 JVM_END |
| 932 | |
| 933 | |
| 934 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
| 935 | |
| 936 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
| 937 assert (cls != NULL, "illegal class"); | |
| 938 JVMWrapper("JVM_GetClassName"); | |
| 939 JvmtiVMObjectAllocEventCollector oam; | |
| 940 ResourceMark rm(THREAD); | |
| 941 const char* name; | |
| 942 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 943 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
| 944 } else { | |
| 945 // Consider caching interned string in Klass | |
|
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946 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 0 | 947 assert(k->is_klass(), "just checking"); |
| 6983 | 948 name = k->external_name(); |
| 0 | 949 } |
| 950 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
| 951 return (jstring) JNIHandles::make_local(env, result); | |
| 952 JVM_END | |
| 953 | |
| 954 | |
| 955 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
| 956 JVMWrapper("JVM_GetClassInterfaces"); | |
| 957 JvmtiVMObjectAllocEventCollector oam; | |
| 958 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 959 | |
| 960 // Special handling for primitive objects | |
| 961 if (java_lang_Class::is_primitive(mirror)) { | |
| 962 // Primitive objects does not have any interfaces | |
| 1142 | 963 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 964 return (jobjectArray) JNIHandles::make_local(env, r); |
| 965 } | |
| 966 | |
|
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|
967 KlassHandle klass(thread, java_lang_Class::as_Klass(mirror)); |
| 0 | 968 // Figure size of result array |
| 969 int size; | |
| 970 if (klass->oop_is_instance()) { | |
|
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971 size = InstanceKlass::cast(klass())->local_interfaces()->length(); |
| 0 | 972 } else { |
| 973 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
| 974 size = 2; | |
| 975 } | |
| 976 | |
| 977 // Allocate result array | |
| 1142 | 978 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
| 0 | 979 objArrayHandle result (THREAD, r); |
| 980 // Fill in result | |
| 981 if (klass->oop_is_instance()) { | |
| 982 // Regular instance klass, fill in all local interfaces | |
| 983 for (int index = 0; index < size; index++) { | |
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984 Klass* k = InstanceKlass::cast(klass())->local_interfaces()->at(index); |
| 6983 | 985 result->obj_at_put(index, k->java_mirror()); |
| 0 | 986 } |
| 987 } else { | |
| 988 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
| 6983 | 989 result->obj_at_put(0, SystemDictionary::Cloneable_klass()->java_mirror()); |
| 990 result->obj_at_put(1, SystemDictionary::Serializable_klass()->java_mirror()); | |
| 0 | 991 } |
| 992 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 993 JVM_END | |
| 994 | |
| 995 | |
| 996 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
| 997 JVMWrapper("JVM_GetClassLoader"); | |
| 998 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 999 return NULL; | |
| 1000 } | |
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1001 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1002 oop loader = k->class_loader(); |
| 0 | 1003 return JNIHandles::make_local(env, loader); |
| 1004 JVM_END | |
| 1005 | |
| 1006 | |
| 1007 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
| 1008 JVMWrapper("JVM_IsInterface"); | |
| 1009 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1010 if (java_lang_Class::is_primitive(mirror)) { | |
| 1011 return JNI_FALSE; | |
| 1012 } | |
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1013 Klass* k = java_lang_Class::as_Klass(mirror); |
| 6983 | 1014 jboolean result = k->is_interface(); |
| 1015 assert(!result || k->oop_is_instance(), | |
| 0 | 1016 "all interfaces are instance types"); |
| 1017 // The compiler intrinsic for isInterface tests the | |
| 1018 // Klass::_access_flags bits in the same way. | |
| 1019 return result; | |
| 1020 JVM_END | |
| 1021 | |
| 1022 | |
| 1023 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
| 1024 JVMWrapper("JVM_GetClassSigners"); | |
| 1025 JvmtiVMObjectAllocEventCollector oam; | |
| 1026 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1027 // There are no signers for primitive types | |
| 1028 return NULL; | |
| 1029 } | |
| 1030 | |
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1031 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 1032 objArrayOop signers = NULL; |
| 6983 | 1033 if (k->oop_is_instance()) { |
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1034 signers = InstanceKlass::cast(k)->signers(); |
| 0 | 1035 } |
| 1036 | |
| 1037 // If there are no signers set in the class, or if the class | |
| 1038 // is an array, return NULL. | |
| 1039 if (signers == NULL) return NULL; | |
| 1040 | |
| 1041 // copy of the signers array | |
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1042 Klass* element = ObjArrayKlass::cast(signers->klass())->element_klass(); |
| 0 | 1043 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); |
| 1044 for (int index = 0; index < signers->length(); index++) { | |
| 1045 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
| 1046 } | |
| 1047 | |
| 1048 // return the copy | |
| 1049 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
| 1050 JVM_END | |
| 1051 | |
| 1052 | |
| 1053 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
| 1054 JVMWrapper("JVM_SetClassSigners"); | |
| 1055 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1056 // This call is ignored for primitive types and arrays. | |
| 1057 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
| 1058 // be called with an array. Only the bootstrap loader creates arrays. | |
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1059 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1060 if (k->oop_is_instance()) { |
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1061 InstanceKlass::cast(k)->set_signers(objArrayOop(JNIHandles::resolve(signers))); |
| 0 | 1062 } |
| 1063 } | |
| 1064 JVM_END | |
| 1065 | |
| 1066 | |
| 1067 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
| 1068 JVMWrapper("JVM_GetProtectionDomain"); | |
| 1069 if (JNIHandles::resolve(cls) == NULL) { | |
| 1070 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
| 1071 } | |
| 1072 | |
| 1073 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1074 // Primitive types does not have a protection domain. | |
| 1075 return NULL; | |
| 1076 } | |
| 1077 | |
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1078 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 6983 | 1079 return (jobject) JNIHandles::make_local(env, k->protection_domain()); |
| 0 | 1080 JVM_END |
| 1081 | |
| 1082 | |
| 1083 // Obsolete since 1.2 (Class.setProtectionDomain removed), although | |
| 1084 // still defined in core libraries as of 1.5. | |
| 1085 JVM_ENTRY(void, JVM_SetProtectionDomain(JNIEnv *env, jclass cls, jobject protection_domain)) | |
| 1086 JVMWrapper("JVM_SetProtectionDomain"); | |
| 1087 if (JNIHandles::resolve(cls) == NULL) { | |
| 1088 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 1089 } | |
| 1090 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1091 // Call is ignored for primitive types | |
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1092 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 0 | 1093 |
| 1094 // cls won't be an array, as this called only from ClassLoader.defineClass | |
| 6983 | 1095 if (k->oop_is_instance()) { |
| 0 | 1096 oop pd = JNIHandles::resolve(protection_domain); |
| 1097 assert(pd == NULL || pd->is_oop(), "just checking"); | |
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1098 InstanceKlass::cast(k)->set_protection_domain(pd); |
| 0 | 1099 } |
| 1100 } | |
| 1101 JVM_END | |
| 1102 | |
| 1103 | |
| 1104 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
| 1105 JVMWrapper("JVM_DoPrivileged"); | |
| 1106 | |
| 1107 if (action == NULL) { | |
| 1108 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
| 1109 } | |
| 1110 | |
| 1111 // Stack allocated list of privileged stack elements | |
| 1112 PrivilegedElement pi; | |
| 1113 | |
| 1114 // Check that action object understands "Object run()" | |
| 1115 Handle object (THREAD, JNIHandles::resolve(action)); | |
| 1116 | |
| 1117 // get run() method | |
| 6983 | 1118 Method* m_oop = object->klass()->uncached_lookup_method( |
| 0 | 1119 vmSymbols::run_method_name(), |
| 1120 vmSymbols::void_object_signature()); | |
| 1121 methodHandle m (THREAD, m_oop); | |
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1122 if (m.is_null() || !m->is_method() || !m()->is_public() || m()->is_static()) { |
| 0 | 1123 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); |
| 1124 } | |
| 1125 | |
| 1126 // Compute the frame initiating the do privileged operation and setup the privileged stack | |
| 1127 vframeStream vfst(thread); | |
| 1128 vfst.security_get_caller_frame(1); | |
| 1129 | |
| 1130 if (!vfst.at_end()) { | |
| 1131 pi.initialize(&vfst, JNIHandles::resolve(context), thread->privileged_stack_top(), CHECK_NULL); | |
| 1132 thread->set_privileged_stack_top(&pi); | |
| 1133 } | |
| 1134 | |
| 1135 | |
| 1136 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
| 1137 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
| 1138 Handle pending_exception; | |
| 1139 JavaValue result(T_OBJECT); | |
| 1140 JavaCallArguments args(object); | |
| 1141 JavaCalls::call(&result, m, &args, THREAD); | |
| 1142 | |
| 1143 // done with action, remove ourselves from the list | |
| 1144 if (!vfst.at_end()) { | |
| 1145 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
| 1146 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
| 1147 } | |
| 1148 | |
| 1149 if (HAS_PENDING_EXCEPTION) { | |
| 1150 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
| 1151 CLEAR_PENDING_EXCEPTION; | |
| 1152 | |
| 1142 | 1153 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
| 1154 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
| 0 | 1155 // Throw a java.security.PrivilegedActionException(Exception e) exception |
| 1156 JavaCallArguments args(pending_exception); | |
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1157 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1158 vmSymbols::exception_void_signature(), |
| 0 | 1159 &args); |
| 1160 } | |
| 1161 } | |
| 1162 | |
| 1163 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
| 1164 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
| 1165 JVM_END | |
| 1166 | |
| 1167 | |
| 1168 // Returns the inherited_access_control_context field of the running thread. | |
| 1169 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1170 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
| 1171 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
| 1172 return JNIHandles::make_local(env, result); | |
| 1173 JVM_END | |
| 1174 | |
| 1175 class RegisterArrayForGC { | |
| 1176 private: | |
| 1177 JavaThread *_thread; | |
| 1178 public: | |
| 1179 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
| 1180 _thread = thread; | |
| 1181 _thread->register_array_for_gc(array); | |
| 1182 } | |
| 1183 | |
| 1184 ~RegisterArrayForGC() { | |
| 1185 _thread->register_array_for_gc(NULL); | |
| 1186 } | |
| 1187 }; | |
| 1188 | |
| 1189 | |
| 1190 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1191 JVMWrapper("JVM_GetStackAccessControlContext"); | |
| 1192 if (!UsePrivilegedStack) return NULL; | |
| 1193 | |
| 1194 ResourceMark rm(THREAD); | |
| 1195 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
| 1196 JvmtiVMObjectAllocEventCollector oam; | |
| 1197 | |
| 1198 // count the protection domains on the execution stack. We collapse | |
| 1199 // duplicate consecutive protection domains into a single one, as | |
| 1200 // well as stopping when we hit a privileged frame. | |
| 1201 | |
| 1202 // Use vframeStream to iterate through Java frames | |
| 1203 vframeStream vfst(thread); | |
| 1204 | |
| 1205 oop previous_protection_domain = NULL; | |
| 1206 Handle privileged_context(thread, NULL); | |
| 1207 bool is_privileged = false; | |
| 1208 oop protection_domain = NULL; | |
| 1209 | |
| 1210 for(; !vfst.at_end(); vfst.next()) { | |
| 1211 // get method of frame | |
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1212 Method* method = vfst.method(); |
| 0 | 1213 intptr_t* frame_id = vfst.frame_id(); |
| 1214 | |
| 1215 // check the privileged frames to see if we have a match | |
| 1216 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
| 1217 // this frame is privileged | |
| 1218 is_privileged = true; | |
| 1219 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
| 1220 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
| 1221 } else { | |
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1222 protection_domain = method->method_holder()->protection_domain(); |
| 0 | 1223 } |
| 1224 | |
| 1225 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
| 1226 local_array->push(protection_domain); | |
| 1227 previous_protection_domain = protection_domain; | |
| 1228 } | |
| 1229 | |
| 1230 if (is_privileged) break; | |
| 1231 } | |
| 1232 | |
| 1233 | |
| 1234 // either all the domains on the stack were system domains, or | |
| 1235 // we had a privileged system domain | |
| 1236 if (local_array->is_empty()) { | |
| 1237 if (is_privileged && privileged_context.is_null()) return NULL; | |
| 1238 | |
| 1239 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
| 1240 return JNIHandles::make_local(env, result); | |
| 1241 } | |
| 1242 | |
| 1243 // the resource area must be registered in case of a gc | |
| 1244 RegisterArrayForGC ragc(thread, local_array); | |
| 1142 | 1245 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
| 0 | 1246 local_array->length(), CHECK_NULL); |
| 1247 objArrayHandle h_context(thread, context); | |
| 1248 for (int index = 0; index < local_array->length(); index++) { | |
| 1249 h_context->obj_at_put(index, local_array->at(index)); | |
| 1250 } | |
| 1251 | |
| 1252 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
| 1253 | |
| 1254 return JNIHandles::make_local(env, result); | |
| 1255 JVM_END | |
| 1256 | |
| 1257 | |
| 1258 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
| 1259 JVMWrapper("JVM_IsArrayClass"); | |
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1260 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1261 return (k != NULL) && k->oop_is_array() ? true : false; |
| 0 | 1262 JVM_END |
| 1263 | |
| 1264 | |
| 1265 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
| 1266 JVMWrapper("JVM_IsPrimitiveClass"); | |
| 1267 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1268 return (jboolean) java_lang_Class::is_primitive(mirror); | |
| 1269 JVM_END | |
| 1270 | |
| 1271 | |
| 1272 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
| 1273 JVMWrapper("JVM_GetComponentType"); | |
| 1274 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1275 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
| 1276 return (jclass) JNIHandles::make_local(env, result); | |
| 1277 JVM_END | |
| 1278 | |
| 1279 | |
| 1280 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
| 1281 JVMWrapper("JVM_GetClassModifiers"); | |
| 1282 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1283 // Primitive type | |
| 1284 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 1285 } | |
| 1286 | |
| 6983 | 1287 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 1288 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); |
| 1289 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
| 1290 return k->modifier_flags(); | |
| 1291 JVM_END | |
| 1292 | |
| 1293 | |
| 1294 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
| 1295 | |
| 1296 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
| 1297 JvmtiVMObjectAllocEventCollector oam; | |
| 1298 // ofClass is a reference to a java_lang_Class object. The mirror object | |
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1299 // of an InstanceKlass |
| 0 | 1300 |
| 1301 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1302 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
| 1142 | 1303 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1304 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1305 } | |
| 1306 | |
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1307 instanceKlassHandle k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
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1308 InnerClassesIterator iter(k); |
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1309 |
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1310 if (iter.length() == 0) { |
| 0 | 1311 // Neither an inner nor outer class |
| 1142 | 1312 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1313 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1314 } | |
| 1315 | |
| 1316 // find inner class info | |
| 1317 constantPoolHandle cp(thread, k->constants()); | |
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1318 int length = iter.length(); |
| 0 | 1319 |
| 1320 // Allocate temp. result array | |
| 1142 | 1321 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
| 0 | 1322 objArrayHandle result (THREAD, r); |
| 1323 int members = 0; | |
| 1324 | |
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1325 for (; !iter.done(); iter.next()) { |
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1326 int ioff = iter.inner_class_info_index(); |
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1327 int ooff = iter.outer_class_info_index(); |
| 0 | 1328 |
| 1329 if (ioff != 0 && ooff != 0) { | |
| 1330 // Check to see if the name matches the class we're looking for | |
| 1331 // before attempting to find the class. | |
| 1332 if (cp->klass_name_at_matches(k, ooff)) { | |
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1333 Klass* outer_klass = cp->klass_at(ooff, CHECK_NULL); |
| 0 | 1334 if (outer_klass == k()) { |
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1335 Klass* ik = cp->klass_at(ioff, CHECK_NULL); |
| 0 | 1336 instanceKlassHandle inner_klass (THREAD, ik); |
| 1337 | |
| 1338 // Throws an exception if outer klass has not declared k as | |
| 1339 // an inner klass | |
|
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1340 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
| 0 | 1341 |
| 1342 result->obj_at_put(members, inner_klass->java_mirror()); | |
| 1343 members++; | |
| 1344 } | |
| 1345 } | |
| 1346 } | |
| 1347 } | |
| 1348 | |
| 1349 if (members != length) { | |
| 1350 // Return array of right length | |
| 1142 | 1351 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
| 0 | 1352 for(int i = 0; i < members; i++) { |
| 1353 res->obj_at_put(i, result->obj_at(i)); | |
| 1354 } | |
| 1355 return (jobjectArray)JNIHandles::make_local(env, res); | |
| 1356 } | |
| 1357 | |
| 1358 return (jobjectArray)JNIHandles::make_local(env, result()); | |
| 1359 JVM_END | |
| 1360 | |
| 1361 | |
| 1362 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
|
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1363 { |
| 0 | 1364 // ofClass is a reference to a java_lang_Class object. |
| 1365 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1366 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
| 0 | 1367 return NULL; |
| 1368 } | |
| 1369 | |
|
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1370 bool inner_is_member = false; |
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1371 Klass* outer_klass |
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1372 = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)) |
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1373 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
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1374 if (outer_klass == NULL) return NULL; // already a top-level class |
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1375 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
| 6983 | 1376 return (jclass) JNIHandles::make_local(env, outer_klass->java_mirror()); |
|
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1377 } |
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1378 JVM_END |
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1379 |
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1380 // should be in InstanceKlass.cpp, but is here for historical reasons |
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1381 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
|
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1382 bool* inner_is_member, |
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1383 TRAPS) { |
|
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1384 Thread* thread = THREAD; |
|
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1385 InnerClassesIterator iter(k); |
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1386 if (iter.length() == 0) { |
| 0 | 1387 // No inner class info => no declaring class |
| 1388 return NULL; | |
| 1389 } | |
| 1390 | |
| 1391 constantPoolHandle i_cp(thread, k->constants()); | |
| 1392 | |
| 1393 bool found = false; | |
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1394 Klass* ok; |
| 0 | 1395 instanceKlassHandle outer_klass; |
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1396 *inner_is_member = false; |
| 0 | 1397 |
| 1398 // Find inner_klass attribute | |
|
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1399 for (; !iter.done() && !found; iter.next()) { |
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1400 int ioff = iter.inner_class_info_index(); |
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1401 int ooff = iter.outer_class_info_index(); |
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1402 int noff = iter.inner_name_index(); |
|
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1403 if (ioff != 0) { |
| 0 | 1404 // Check to see if the name matches the class we're looking for |
| 1405 // before attempting to find the class. | |
| 1406 if (i_cp->klass_name_at_matches(k, ioff)) { | |
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1407 Klass* inner_klass = i_cp->klass_at(ioff, CHECK_NULL); |
|
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1408 found = (k() == inner_klass); |
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1409 if (found && ooff != 0) { |
| 0 | 1410 ok = i_cp->klass_at(ooff, CHECK_NULL); |
| 1411 outer_klass = instanceKlassHandle(thread, ok); | |
|
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1412 *inner_is_member = true; |
| 0 | 1413 } |
| 1414 } | |
| 1415 } | |
| 1416 } | |
| 1417 | |
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1418 if (found && outer_klass.is_null()) { |
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1419 // It may be anonymous; try for that. |
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1420 int encl_method_class_idx = k->enclosing_method_class_index(); |
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1421 if (encl_method_class_idx != 0) { |
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1422 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
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1423 outer_klass = instanceKlassHandle(thread, ok); |
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1424 *inner_is_member = false; |
|
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1425 } |
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1426 } |
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1427 |
| 0 | 1428 // If no inner class attribute found for this class. |
|
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1429 if (outer_klass.is_null()) return NULL; |
| 0 | 1430 |
| 1431 // Throws an exception if outer klass has not declared k as an inner klass | |
|
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1432 // We need evidence that each klass knows about the other, or else |
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1433 // the system could allow a spoof of an inner class to gain access rights. |
|
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1434 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
|
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1435 return outer_klass(); |
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1436 } |
| 0 | 1437 |
| 1438 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
| 1439 assert (cls != NULL, "illegal class"); | |
| 1440 JVMWrapper("JVM_GetClassSignature"); | |
| 1441 JvmtiVMObjectAllocEventCollector oam; | |
| 1442 ResourceMark rm(THREAD); | |
| 1443 // Return null for arrays and primatives | |
| 1444 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1445 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 6983 | 1446 if (k->oop_is_instance()) { |
|
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1447 Symbol* sym = InstanceKlass::cast(k)->generic_signature(); |
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1448 if (sym == NULL) return NULL; |
| 0 | 1449 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 1450 return (jstring) JNIHandles::make_local(env, str()); | |
| 1451 } | |
| 1452 } | |
| 1453 return NULL; | |
| 1454 JVM_END | |
| 1455 | |
| 1456 | |
| 1457 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
| 1458 assert (cls != NULL, "illegal class"); | |
| 1459 JVMWrapper("JVM_GetClassAnnotations"); | |
| 1460 ResourceMark rm(THREAD); | |
| 1461 // Return null for arrays and primitives | |
| 1462 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1463 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 6983 | 1464 if (k->oop_is_instance()) { |
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1465 typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->class_annotations(), CHECK_NULL); |
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1466 return (jbyteArray) JNIHandles::make_local(env, a); |
| 0 | 1467 } |
| 1468 } | |
| 1469 return NULL; | |
| 1470 JVM_END | |
| 1471 | |
| 1472 | |
| 1473 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) | |
| 1474 assert(field != NULL, "illegal field"); | |
| 1475 JVMWrapper("JVM_GetFieldAnnotations"); | |
| 1476 | |
| 1477 // some of this code was adapted from from jni_FromReflectedField | |
| 1478 | |
| 1479 // field is a handle to a java.lang.reflect.Field object | |
| 1480 oop reflected = JNIHandles::resolve_non_null(field); | |
| 1481 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
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1482 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 1483 int slot = java_lang_reflect_Field::slot(reflected); |
| 1484 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
| 1485 | |
| 1486 fieldDescriptor fd; | |
| 1487 KlassHandle kh(THREAD, k); | |
|
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1488 intptr_t offset = InstanceKlass::cast(kh())->field_offset(slot); |
| 0 | 1489 |
| 1490 if (modifiers & JVM_ACC_STATIC) { | |
| 1491 // for static fields we only look in the current class | |
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1492 if (!InstanceKlass::cast(kh())->find_local_field_from_offset(offset, true, &fd)) { |
| 0 | 1493 assert(false, "cannot find static field"); |
| 1494 return NULL; // robustness | |
| 1495 } | |
| 1496 } else { | |
| 1497 // for instance fields we start with the current class and work | |
| 1498 // our way up through the superclass chain | |
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1499 if (!InstanceKlass::cast(kh())->find_field_from_offset(offset, false, &fd)) { |
| 0 | 1500 assert(false, "cannot find instance field"); |
| 1501 return NULL; // robustness | |
| 1502 } | |
| 1503 } | |
| 1504 | |
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1505 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.annotations(), THREAD)); |
| 0 | 1506 JVM_END |
| 1507 | |
| 1508 | |
|
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1509 static Method* jvm_get_method_common(jobject method) { |
| 0 | 1510 // some of this code was adapted from from jni_FromReflectedMethod |
| 1511 | |
| 1512 oop reflected = JNIHandles::resolve_non_null(method); | |
| 1513 oop mirror = NULL; | |
| 1514 int slot = 0; | |
| 1515 | |
| 1142 | 1516 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
| 0 | 1517 mirror = java_lang_reflect_Constructor::clazz(reflected); |
| 1518 slot = java_lang_reflect_Constructor::slot(reflected); | |
| 1519 } else { | |
| 1142 | 1520 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
| 0 | 1521 "wrong type"); |
| 1522 mirror = java_lang_reflect_Method::clazz(reflected); | |
| 1523 slot = java_lang_reflect_Method::slot(reflected); | |
| 1524 } | |
|
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1525 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 1526 |
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1527 Method* m = InstanceKlass::cast(k)->method_with_idnum(slot); |
| 0 | 1528 if (m == NULL) { |
| 1529 assert(false, "cannot find method"); | |
| 1530 return NULL; // robustness | |
| 1531 } | |
| 1532 | |
| 1533 return m; | |
| 1534 } | |
| 1535 | |
| 1536 | |
| 1537 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
| 1538 JVMWrapper("JVM_GetMethodAnnotations"); | |
| 1539 | |
| 1540 // method is a handle to a java.lang.reflect.Method object | |
|
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1541 Method* m = jvm_get_method_common(method); |
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1542 return (jbyteArray) JNIHandles::make_local(env, |
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1543 Annotations::make_java_array(m->annotations(), THREAD)); |
| 0 | 1544 JVM_END |
| 1545 | |
| 1546 | |
| 1547 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
| 1548 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
| 1549 | |
| 1550 // method is a handle to a java.lang.reflect.Method object | |
|
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1551 Method* m = jvm_get_method_common(method); |
|
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1552 return (jbyteArray) JNIHandles::make_local(env, |
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1553 Annotations::make_java_array(m->annotation_default(), THREAD)); |
| 0 | 1554 JVM_END |
| 1555 | |
| 1556 | |
| 1557 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
| 1558 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
| 1559 | |
| 1560 // method is a handle to a java.lang.reflect.Method object | |
|
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1561 Method* m = jvm_get_method_common(method); |
|
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1562 return (jbyteArray) JNIHandles::make_local(env, |
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1563 Annotations::make_java_array(m->parameter_annotations(), THREAD)); |
| 0 | 1564 JVM_END |
| 1565 | |
|
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1566 /* Type use annotations support (JDK 1.8) */ |
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1567 |
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1568 JVM_ENTRY(jbyteArray, JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls)) |
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1569 assert (cls != NULL, "illegal class"); |
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1570 JVMWrapper("JVM_GetClassTypeAnnotations"); |
|
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1571 ResourceMark rm(THREAD); |
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1572 // Return null for arrays and primitives |
|
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1573 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
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1574 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
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1575 if (k->oop_is_instance()) { |
|
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1576 Annotations* type_annotations = InstanceKlass::cast(k)->type_annotations(); |
|
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1577 if (type_annotations != NULL) { |
|
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1578 typeArrayOop a = Annotations::make_java_array(type_annotations->class_annotations(), CHECK_NULL); |
|
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1579 return (jbyteArray) JNIHandles::make_local(env, a); |
|
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1580 } |
|
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1581 } |
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1582 } |
|
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1583 return NULL; |
|
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1584 JVM_END |
|
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1585 |
|
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1586 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { |
|
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1587 if (!cp->is_within_bounds(index)) { |
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1588 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); |
|
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1589 } |
|
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1590 } |
|
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1591 |
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1592 JVM_ENTRY(jobjectArray, JVM_GetMethodParameters(JNIEnv *env, jobject method)) |
|
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1593 { |
|
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1594 JVMWrapper("JVM_GetMethodParameters"); |
|
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1595 // method is a handle to a java.lang.reflect.Method object |
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1596 Method* method_ptr = jvm_get_method_common(method); |
|
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1597 methodHandle mh (THREAD, method_ptr); |
|
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1598 Handle reflected_method (THREAD, JNIHandles::resolve_non_null(method)); |
|
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1599 const int num_params = mh->method_parameters_length(); |
|
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1600 |
|
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1601 if (0 != num_params) { |
|
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1602 // make sure all the symbols are properly formatted |
|
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1603 for (int i = 0; i < num_params; i++) { |
|
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1604 MethodParametersElement* params = mh->method_parameters_start(); |
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1605 int index = params[i].name_cp_index; |
|
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1606 bounds_check(mh->constants(), index, CHECK_NULL); |
|
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1607 |
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1608 if (0 != index && !mh->constants()->tag_at(index).is_utf8()) { |
|
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1609 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), |
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1610 "Wrong type at constant pool index"); |
|
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1611 } |
|
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1612 |
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1613 } |
|
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1614 |
|
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1615 objArrayOop result_oop = oopFactory::new_objArray(SystemDictionary::reflect_Parameter_klass(), num_params, CHECK_NULL); |
|
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1616 objArrayHandle result (THREAD, result_oop); |
|
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1617 |
|
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1618 for (int i = 0; i < num_params; i++) { |
|
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1619 MethodParametersElement* params = mh->method_parameters_start(); |
|
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1620 // For a 0 index, give a NULL symbol |
|
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1621 Symbol* const sym = 0 != params[i].name_cp_index ? |
|
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1622 mh->constants()->symbol_at(params[i].name_cp_index) : NULL; |
|
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1623 int flags = params[i].flags; |
|
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1624 oop param = Reflection::new_parameter(reflected_method, i, sym, |
|
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1625 flags, CHECK_NULL); |
|
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1626 result->obj_at_put(i, param); |
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|
1627 } |
|
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1628 return (jobjectArray)JNIHandles::make_local(env, result()); |
|
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1629 } else { |
|
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|
1630 return (jobjectArray)NULL; |
|
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|
1631 } |
|
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|
1632 } |
|
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|
1633 JVM_END |
| 0 | 1634 |
| 1635 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
| 1636 | |
| 1637 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1638 { | |
| 1639 JVMWrapper("JVM_GetClassDeclaredFields"); | |
| 1640 JvmtiVMObjectAllocEventCollector oam; | |
| 1641 | |
| 1642 // Exclude primitive types and array types | |
| 1643 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1644 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
| 0 | 1645 // Return empty array |
| 1142 | 1646 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
| 0 | 1647 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1648 } | |
| 1649 | |
|
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1650 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
| 0 | 1651 constantPoolHandle cp(THREAD, k->constants()); |
| 1652 | |
| 1653 // Ensure class is linked | |
| 1654 k->link_class(CHECK_NULL); | |
| 1655 | |
| 1656 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
| 1657 bool skip_backtrace = false; | |
| 1658 | |
| 1659 // Allocate result | |
| 1660 int num_fields; | |
| 1661 | |
| 1662 if (publicOnly) { | |
| 1663 num_fields = 0; | |
| 3938 | 1664 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
| 1665 if (fs.access_flags().is_public()) ++num_fields; | |
| 0 | 1666 } |
| 1667 } else { | |
| 3938 | 1668 num_fields = k->java_fields_count(); |
| 0 | 1669 |
| 1142 | 1670 if (k() == SystemDictionary::Throwable_klass()) { |
| 0 | 1671 num_fields--; |
| 1672 skip_backtrace = true; | |
| 1673 } | |
| 1674 } | |
| 1675 | |
| 1142 | 1676 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
| 0 | 1677 objArrayHandle result (THREAD, r); |
| 1678 | |
| 1679 int out_idx = 0; | |
| 1680 fieldDescriptor fd; | |
| 3938 | 1681 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
| 0 | 1682 if (skip_backtrace) { |
| 1683 // 4496456 skip java.lang.Throwable.backtrace | |
| 3938 | 1684 int offset = fs.offset(); |
| 0 | 1685 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
| 1686 } | |
| 1687 | |
| 3938 | 1688 if (!publicOnly || fs.access_flags().is_public()) { |
| 1689 fd.initialize(k(), fs.index()); | |
| 0 | 1690 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
| 1691 result->obj_at_put(out_idx, field); | |
| 1692 ++out_idx; | |
| 1693 } | |
| 1694 } | |
| 1695 assert(out_idx == num_fields, "just checking"); | |
| 1696 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1697 } | |
| 1698 JVM_END | |
| 1699 | |
| 1700 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1701 { | |
| 1702 JVMWrapper("JVM_GetClassDeclaredMethods"); | |
| 1703 JvmtiVMObjectAllocEventCollector oam; | |
| 1704 | |
| 1705 // Exclude primitive types and array types | |
| 1706 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
| 6983 | 1707 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
| 0 | 1708 // Return empty array |
| 1142 | 1709 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), 0, CHECK_NULL); |
| 0 | 1710 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1711 } | |
| 1712 | |
|
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1713 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
| 0 | 1714 |
| 1715 // Ensure class is linked | |
| 1716 k->link_class(CHECK_NULL); | |
| 1717 | |
|
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1718 Array<Method*>* methods = k->methods(); |
| 0 | 1719 int methods_length = methods->length(); |
| 1720 int num_methods = 0; | |
| 1721 | |
| 1722 int i; | |
| 1723 for (i = 0; i < methods_length; i++) { | |
|
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1724 methodHandle method(THREAD, methods->at(i)); |
| 0 | 1725 if (!method->is_initializer()) { |
| 1726 if (!publicOnly || method->is_public()) { | |
| 1727 ++num_methods; | |
| 1728 } | |
| 1729 } | |
| 1730 } | |
| 1731 | |
| 1732 // Allocate result | |
| 1142 | 1733 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), num_methods, CHECK_NULL); |
| 0 | 1734 objArrayHandle result (THREAD, r); |
| 1735 | |
| 1736 int out_idx = 0; | |
| 1737 for (i = 0; i < methods_length; i++) { | |
|
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1738 methodHandle method(THREAD, methods->at(i)); |
| 0 | 1739 if (!method->is_initializer()) { |
| 1740 if (!publicOnly || method->is_public()) { | |
| 1741 oop m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); | |
| 1742 result->obj_at_put(out_idx, m); | |
| 1743 ++out_idx; | |
| 1744 } | |
| 1745 } | |
| 1746 } | |
| 1747 assert(out_idx == num_methods, "just checking"); | |
| 1748 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1749 } | |
| 1750 JVM_END | |
| 1751 | |
| 1752 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1753 { | |
| 1754 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
| 1755 JvmtiVMObjectAllocEventCollector oam; | |
| 1756 | |
| 1757 // Exclude primitive types and array types | |
| 1758 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
| 6983 | 1759 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
| 0 | 1760 // Return empty array |
| 1142 | 1761 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), 0 , CHECK_NULL); |
| 0 | 1762 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1763 } | |
| 1764 | |
|
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1765 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
| 0 | 1766 |
| 1767 // Ensure class is linked | |
| 1768 k->link_class(CHECK_NULL); | |
| 1769 | |
|
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1770 Array<Method*>* methods = k->methods(); |
| 0 | 1771 int methods_length = methods->length(); |
| 1772 int num_constructors = 0; | |
| 1773 | |
| 1774 int i; | |
| 1775 for (i = 0; i < methods_length; i++) { | |
|
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1776 methodHandle method(THREAD, methods->at(i)); |
| 0 | 1777 if (method->is_initializer() && !method->is_static()) { |
| 1778 if (!publicOnly || method->is_public()) { | |
| 1779 ++num_constructors; | |
| 1780 } | |
| 1781 } | |
| 1782 } | |
| 1783 | |
| 1784 // Allocate result | |
| 1142 | 1785 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), num_constructors, CHECK_NULL); |
| 0 | 1786 objArrayHandle result(THREAD, r); |
| 1787 | |
| 1788 int out_idx = 0; | |
| 1789 for (i = 0; i < methods_length; i++) { | |
|
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1790 methodHandle method(THREAD, methods->at(i)); |
| 0 | 1791 if (method->is_initializer() && !method->is_static()) { |
| 1792 if (!publicOnly || method->is_public()) { | |
| 1793 oop m = Reflection::new_constructor(method, CHECK_NULL); | |
| 1794 result->obj_at_put(out_idx, m); | |
| 1795 ++out_idx; | |
| 1796 } | |
| 1797 } | |
| 1798 } | |
| 1799 assert(out_idx == num_constructors, "just checking"); | |
| 1800 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1801 } | |
| 1802 JVM_END | |
| 1803 | |
| 1804 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
| 1805 { | |
| 1806 JVMWrapper("JVM_GetClassAccessFlags"); | |
| 1807 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1808 // Primitive type | |
| 1809 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 1810 } | |
| 1811 | |
| 6983 | 1812 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 1813 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; |
| 1814 } | |
| 1815 JVM_END | |
| 1816 | |
| 1817 | |
| 1818 // Constant pool access ////////////////////////////////////////////////////////// | |
| 1819 | |
| 1820 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
| 1821 { | |
| 1822 JVMWrapper("JVM_GetClassConstantPool"); | |
| 1823 JvmtiVMObjectAllocEventCollector oam; | |
| 1824 | |
| 1825 // Return null for primitives and arrays | |
| 1826 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
|
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1827 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1828 if (k->oop_is_instance()) { |
| 0 | 1829 instanceKlassHandle k_h(THREAD, k); |
| 1830 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
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1831 sun_reflect_ConstantPool::set_cp(jcp(), k_h->constants()); |
| 0 | 1832 return JNIHandles::make_local(jcp()); |
| 1833 } | |
| 1834 } | |
| 1835 return NULL; | |
| 1836 } | |
| 1837 JVM_END | |
| 1838 | |
| 1839 | |
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1840 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject obj, jobject unused)) |
| 0 | 1841 { |
| 1842 JVMWrapper("JVM_ConstantPoolGetSize"); | |
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1843 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1844 return cp->length(); |
| 1845 } | |
| 1846 JVM_END | |
| 1847 | |
| 1848 | |
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1849 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 1850 { |
| 1851 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
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1852 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1853 bounds_check(cp, index, CHECK_NULL); |
| 1854 constantTag tag = cp->tag_at(index); | |
| 1855 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 1856 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1857 } | |
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1858 Klass* k = cp->klass_at(index, CHECK_NULL); |
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1859 return (jclass) JNIHandles::make_local(k->java_mirror()); |
| 0 | 1860 } |
| 1861 JVM_END | |
| 1862 | |
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1863 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 1864 { |
| 1865 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
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1866 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1867 bounds_check(cp, index, CHECK_NULL); |
| 1868 constantTag tag = cp->tag_at(index); | |
| 1869 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 1870 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1871 } | |
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1872 Klass* k = ConstantPool::klass_at_if_loaded(cp, index); |
| 0 | 1873 if (k == NULL) return NULL; |
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1874 return (jclass) JNIHandles::make_local(k->java_mirror()); |
| 0 | 1875 } |
| 1876 JVM_END | |
| 1877 | |
| 1878 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 1879 constantTag tag = cp->tag_at(index); | |
| 1880 if (!tag.is_method() && !tag.is_interface_method()) { | |
| 1881 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1882 } | |
| 1883 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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1884 Klass* k_o; |
| 0 | 1885 if (force_resolution) { |
| 1886 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 1887 } else { | |
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1888 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
| 0 | 1889 if (k_o == NULL) return NULL; |
| 1890 } | |
| 1891 instanceKlassHandle k(THREAD, k_o); | |
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1892 Symbol* name = cp->uncached_name_ref_at(index); |
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1893 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 1894 methodHandle m (THREAD, k->find_method(name, sig)); |
| 1895 if (m.is_null()) { | |
| 1896 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
| 1897 } | |
| 1898 oop method; | |
| 1899 if (!m->is_initializer() || m->is_static()) { | |
| 1900 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
| 1901 } else { | |
| 1902 method = Reflection::new_constructor(m, CHECK_NULL); | |
| 1903 } | |
| 1904 return JNIHandles::make_local(method); | |
| 1905 } | |
| 1906 | |
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1907 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 1908 { |
| 1909 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
| 1910 JvmtiVMObjectAllocEventCollector oam; | |
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1911 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1912 bounds_check(cp, index, CHECK_NULL); |
| 1913 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
| 1914 return res; | |
| 1915 } | |
| 1916 JVM_END | |
| 1917 | |
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1918 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 1919 { |
| 1920 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
| 1921 JvmtiVMObjectAllocEventCollector oam; | |
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1922 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1923 bounds_check(cp, index, CHECK_NULL); |
| 1924 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
| 1925 return res; | |
| 1926 } | |
| 1927 JVM_END | |
| 1928 | |
| 1929 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 1930 constantTag tag = cp->tag_at(index); | |
| 1931 if (!tag.is_field()) { | |
| 1932 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1933 } | |
| 1934 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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1935 Klass* k_o; |
| 0 | 1936 if (force_resolution) { |
| 1937 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 1938 } else { | |
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1939 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
| 0 | 1940 if (k_o == NULL) return NULL; |
| 1941 } | |
| 1942 instanceKlassHandle k(THREAD, k_o); | |
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1943 Symbol* name = cp->uncached_name_ref_at(index); |
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1944 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 1945 fieldDescriptor fd; |
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1946 Klass* target_klass = k->find_field(name, sig, &fd); |
| 0 | 1947 if (target_klass == NULL) { |
| 1948 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
| 1949 } | |
| 1950 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
| 1951 return JNIHandles::make_local(field); | |
| 1952 } | |
| 1953 | |
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1954 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject obj, jobject unusedl, jint index)) |
| 0 | 1955 { |
| 1956 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
| 1957 JvmtiVMObjectAllocEventCollector oam; | |
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1958 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1959 bounds_check(cp, index, CHECK_NULL); |
| 1960 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
| 1961 return res; | |
| 1962 } | |
| 1963 JVM_END | |
| 1964 | |
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1965 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 1966 { |
| 1967 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
| 1968 JvmtiVMObjectAllocEventCollector oam; | |
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1969 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1970 bounds_check(cp, index, CHECK_NULL); |
| 1971 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
| 1972 return res; | |
| 1973 } | |
| 1974 JVM_END | |
| 1975 | |
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1976 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 1977 { |
| 1978 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
| 1979 JvmtiVMObjectAllocEventCollector oam; | |
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1980 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1981 bounds_check(cp, index, CHECK_NULL); |
| 1982 constantTag tag = cp->tag_at(index); | |
| 1983 if (!tag.is_field_or_method()) { | |
| 1984 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1985 } | |
| 1986 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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1987 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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1988 Symbol* member_name = cp->uncached_name_ref_at(index); |
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1989 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
| 1142 | 1990 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
| 0 | 1991 objArrayHandle dest(THREAD, dest_o); |
| 1992 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
| 1993 dest->obj_at_put(0, str()); | |
| 1994 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
| 1995 dest->obj_at_put(1, str()); | |
| 1996 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
| 1997 dest->obj_at_put(2, str()); | |
| 1998 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 1999 } | |
| 2000 JVM_END | |
| 2001 | |
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2002 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2003 { |
| 2004 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
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2005 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2006 bounds_check(cp, index, CHECK_0); |
| 2007 constantTag tag = cp->tag_at(index); | |
| 2008 if (!tag.is_int()) { | |
| 2009 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2010 } | |
| 2011 return cp->int_at(index); | |
| 2012 } | |
| 2013 JVM_END | |
| 2014 | |
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2015 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2016 { |
| 2017 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
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2018 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2019 bounds_check(cp, index, CHECK_(0L)); |
| 2020 constantTag tag = cp->tag_at(index); | |
| 2021 if (!tag.is_long()) { | |
| 2022 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2023 } | |
| 2024 return cp->long_at(index); | |
| 2025 } | |
| 2026 JVM_END | |
| 2027 | |
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2028 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2029 { |
| 2030 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
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2031 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2032 bounds_check(cp, index, CHECK_(0.0f)); |
| 2033 constantTag tag = cp->tag_at(index); | |
| 2034 if (!tag.is_float()) { | |
| 2035 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2036 } | |
| 2037 return cp->float_at(index); | |
| 2038 } | |
| 2039 JVM_END | |
| 2040 | |
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2041 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2042 { |
| 2043 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
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2044 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2045 bounds_check(cp, index, CHECK_(0.0)); |
| 2046 constantTag tag = cp->tag_at(index); | |
| 2047 if (!tag.is_double()) { | |
| 2048 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2049 } | |
| 2050 return cp->double_at(index); | |
| 2051 } | |
| 2052 JVM_END | |
| 2053 | |
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2054 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2055 { |
| 2056 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
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2057 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2058 bounds_check(cp, index, CHECK_NULL); |
| 2059 constantTag tag = cp->tag_at(index); | |
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2060 if (!tag.is_string()) { |
| 0 | 2061 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
| 2062 } | |
| 2063 oop str = cp->string_at(index, CHECK_NULL); | |
| 2064 return (jstring) JNIHandles::make_local(str); | |
| 2065 } | |
| 2066 JVM_END | |
| 2067 | |
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2068 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2069 { |
| 2070 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
| 2071 JvmtiVMObjectAllocEventCollector oam; | |
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2072 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2073 bounds_check(cp, index, CHECK_NULL); |
| 2074 constantTag tag = cp->tag_at(index); | |
| 2075 if (!tag.is_symbol()) { | |
| 2076 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2077 } | |
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2078 Symbol* sym = cp->symbol_at(index); |
| 0 | 2079 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 2080 return (jstring) JNIHandles::make_local(str()); | |
| 2081 } | |
| 2082 JVM_END | |
| 2083 | |
| 2084 | |
| 2085 // Assertion support. ////////////////////////////////////////////////////////// | |
| 2086 | |
| 2087 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
| 2088 JVMWrapper("JVM_DesiredAssertionStatus"); | |
| 2089 assert(cls != NULL, "bad class"); | |
| 2090 | |
| 2091 oop r = JNIHandles::resolve(cls); | |
| 2092 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
| 2093 if (java_lang_Class::is_primitive(r)) return false; | |
| 2094 | |
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2095 Klass* k = java_lang_Class::as_Klass(r); |
| 6983 | 2096 assert(k->oop_is_instance(), "must be an instance klass"); |
| 2097 if (! k->oop_is_instance()) return false; | |
| 0 | 2098 |
| 2099 ResourceMark rm(THREAD); | |
| 6983 | 2100 const char* name = k->name()->as_C_string(); |
| 2101 bool system_class = k->class_loader() == NULL; | |
| 0 | 2102 return JavaAssertions::enabled(name, system_class); |
| 2103 | |
| 2104 JVM_END | |
| 2105 | |
| 2106 | |
| 2107 // Return a new AssertionStatusDirectives object with the fields filled in with | |
| 2108 // command-line assertion arguments (i.e., -ea, -da). | |
| 2109 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
| 2110 JVMWrapper("JVM_AssertionStatusDirectives"); | |
| 2111 JvmtiVMObjectAllocEventCollector oam; | |
| 2112 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
| 2113 return JNIHandles::make_local(env, asd); | |
| 2114 JVM_END | |
| 2115 | |
| 2116 // Verification //////////////////////////////////////////////////////////////////////////////// | |
| 2117 | |
| 2118 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
| 2119 | |
| 2120 // RedefineClasses support: bug 6214132 caused verification to fail. | |
| 2121 // All functions from this section should call the jvmtiThreadSate function: | |
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2122 // Klass* class_to_verify_considering_redefinition(Klass* klass). |
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2123 // The function returns a Klass* of the _scratch_class if the verifier |
| 0 | 2124 // was invoked in the middle of the class redefinition. |
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2125 // Otherwise it returns its argument value which is the _the_class Klass*. |
| 0 | 2126 // Please, refer to the description in the jvmtiThreadSate.hpp. |
| 2127 | |
| 2128 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
| 2129 JVMWrapper("JVM_GetClassNameUTF"); | |
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2130 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2131 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2132 return k->name()->as_utf8(); |
| 0 | 2133 JVM_END |
| 2134 | |
| 2135 | |
| 2136 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
| 2137 JVMWrapper("JVM_GetClassCPTypes"); | |
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2138 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2139 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2140 // types will have length zero if this is not an InstanceKlass |
| 0 | 2141 // (length is determined by call to JVM_GetClassCPEntriesCount) |
| 6983 | 2142 if (k->oop_is_instance()) { |
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2143 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2144 for (int index = cp->length() - 1; index >= 0; index--) { |
| 2145 constantTag tag = cp->tag_at(index); | |
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2146 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : tag.value(); |
| 0 | 2147 } |
| 2148 } | |
| 2149 JVM_END | |
| 2150 | |
| 2151 | |
| 2152 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
| 2153 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
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2154 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2155 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2156 if (!k->oop_is_instance()) |
| 0 | 2157 return 0; |
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2158 return InstanceKlass::cast(k)->constants()->length(); |
| 0 | 2159 JVM_END |
| 2160 | |
| 2161 | |
| 2162 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
| 2163 JVMWrapper("JVM_GetClassFieldsCount"); | |
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2164 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2165 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2166 if (!k->oop_is_instance()) |
| 0 | 2167 return 0; |
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2168 return InstanceKlass::cast(k)->java_fields_count(); |
| 0 | 2169 JVM_END |
| 2170 | |
| 2171 | |
| 2172 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
| 2173 JVMWrapper("JVM_GetClassMethodsCount"); | |
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2174 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2175 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2176 if (!k->oop_is_instance()) |
| 0 | 2177 return 0; |
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2178 return InstanceKlass::cast(k)->methods()->length(); |
| 0 | 2179 JVM_END |
| 2180 | |
| 2181 | |
| 2182 // The following methods, used for the verifier, are never called with | |
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2183 // array klasses, so a direct cast to InstanceKlass is safe. |
| 0 | 2184 // Typically, these methods are called in a loop with bounds determined |
| 2185 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
| 2186 // zero for arrays. | |
| 2187 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
| 2188 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
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2189 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2190 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2191 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2192 int length = method->checked_exceptions_length(); |
| 0 | 2193 if (length > 0) { |
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2194 CheckedExceptionElement* table= method->checked_exceptions_start(); |
| 0 | 2195 for (int i = 0; i < length; i++) { |
| 2196 exceptions[i] = table[i].class_cp_index; | |
| 2197 } | |
| 2198 } | |
| 2199 JVM_END | |
| 2200 | |
| 2201 | |
| 2202 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
| 2203 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
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2204 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2205 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2206 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2207 return method->checked_exceptions_length(); |
| 0 | 2208 JVM_END |
| 2209 | |
| 2210 | |
| 2211 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
| 2212 JVMWrapper("JVM_GetMethodIxByteCode"); | |
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2213 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2214 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2215 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2216 memcpy(code, method->code_base(), method->code_size()); |
| 0 | 2217 JVM_END |
| 2218 | |
| 2219 | |
| 2220 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
| 2221 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
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2222 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2223 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2224 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2225 return method->code_size(); |
| 0 | 2226 JVM_END |
| 2227 | |
| 2228 | |
| 2229 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
| 2230 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
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2231 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2232 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2233 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2234 ExceptionTable extable(method); |
|
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2235 entry->start_pc = extable.start_pc(entry_index); |
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2236 entry->end_pc = extable.end_pc(entry_index); |
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2237 entry->handler_pc = extable.handler_pc(entry_index); |
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2238 entry->catchType = extable.catch_type_index(entry_index); |
| 0 | 2239 JVM_END |
| 2240 | |
| 2241 | |
| 2242 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
| 2243 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
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2244 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2245 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2246 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2247 return method->exception_table_length(); |
| 0 | 2248 JVM_END |
| 2249 | |
| 2250 | |
| 2251 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
| 2252 JVMWrapper("JVM_GetMethodIxModifiers"); | |
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2253 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2254 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2255 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2256 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
| 0 | 2257 JVM_END |
| 2258 | |
| 2259 | |
| 2260 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
| 2261 JVMWrapper("JVM_GetFieldIxModifiers"); | |
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2262 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2263 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2264 return InstanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
| 0 | 2265 JVM_END |
| 2266 | |
| 2267 | |
| 2268 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
| 2269 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
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2270 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2271 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2272 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2273 return method->max_locals(); |
| 0 | 2274 JVM_END |
| 2275 | |
| 2276 | |
| 2277 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
| 2278 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
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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 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2282 return method->size_of_parameters(); |
| 0 | 2283 JVM_END |
| 2284 | |
| 2285 | |
| 2286 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
| 2287 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
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2288 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2289 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2290 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2291 return method->verifier_max_stack(); |
| 0 | 2292 JVM_END |
| 2293 | |
| 2294 | |
| 2295 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
| 2296 JVMWrapper("JVM_IsConstructorIx"); | |
| 2297 ResourceMark rm(THREAD); | |
|
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2298 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2299 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2300 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2301 return method->name() == vmSymbols::object_initializer_name(); |
| 0 | 2302 JVM_END |
| 2303 | |
| 2304 | |
|
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2305 JVM_QUICK_ENTRY(jboolean, JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cls, int method_index)) |
|
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2306 JVMWrapper("JVM_IsVMGeneratedMethodIx"); |
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2307 ResourceMark rm(THREAD); |
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2308 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2309 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2310 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2311 return method->is_overpass(); |
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2312 JVM_END |
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2313 |
| 0 | 2314 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) |
| 2315 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
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2316 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2317 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2318 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2319 return method->name()->as_utf8(); |
| 0 | 2320 JVM_END |
| 2321 | |
| 2322 | |
| 2323 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
| 2324 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
|
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2325 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2326 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2327 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2328 return method->signature()->as_utf8(); |
| 0 | 2329 JVM_END |
| 2330 | |
| 2331 /** | |
| 2332 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
| 2333 * read entries in the constant pool. Since the old verifier always | |
| 2334 * works on a copy of the code, it will not see any rewriting that | |
| 2335 * may possibly occur in the middle of verification. So it is important | |
| 2336 * that nothing it calls tries to use the cpCache instead of the raw | |
| 2337 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
| 2338 */ | |
| 2339 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2340 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
|
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2341 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2342 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2343 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2344 switch (cp->tag_at(cp_index).value()) { |
| 2345 case JVM_CONSTANT_Fieldref: | |
| 2346 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
| 2347 default: | |
| 2348 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
| 2349 } | |
| 2350 ShouldNotReachHere(); | |
| 2351 return NULL; | |
| 2352 JVM_END | |
| 2353 | |
| 2354 | |
| 2355 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2356 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
|
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2357 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2358 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2359 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2360 switch (cp->tag_at(cp_index).value()) { |
| 2361 case JVM_CONSTANT_InterfaceMethodref: | |
| 2362 case JVM_CONSTANT_Methodref: | |
|
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2363 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2364 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
| 2365 default: | |
| 2366 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
| 2367 } | |
| 2368 ShouldNotReachHere(); | |
| 2369 return NULL; | |
| 2370 JVM_END | |
| 2371 | |
| 2372 | |
| 2373 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2374 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
|
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2375 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2376 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2377 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2378 switch (cp->tag_at(cp_index).value()) { |
| 2379 case JVM_CONSTANT_InterfaceMethodref: | |
| 2380 case JVM_CONSTANT_Methodref: | |
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2381 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2382 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
| 2383 default: | |
| 2384 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
| 2385 } | |
| 2386 ShouldNotReachHere(); | |
| 2387 return NULL; | |
| 2388 JVM_END | |
| 2389 | |
| 2390 | |
| 2391 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2392 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
|
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2393 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2394 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2395 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2396 switch (cp->tag_at(cp_index).value()) { |
| 2397 case JVM_CONSTANT_Fieldref: | |
| 2398 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
| 2399 default: | |
| 2400 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
| 2401 } | |
| 2402 ShouldNotReachHere(); | |
| 2403 return NULL; | |
| 2404 JVM_END | |
| 2405 | |
| 2406 | |
| 2407 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2408 JVMWrapper("JVM_GetCPClassNameUTF"); | |
|
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2409 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2410 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2411 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
|
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2412 Symbol* classname = cp->klass_name_at(cp_index); |
| 0 | 2413 return classname->as_utf8(); |
| 2414 JVM_END | |
| 2415 | |
| 2416 | |
| 2417 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2418 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
|
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2419 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2420 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2421 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2422 switch (cp->tag_at(cp_index).value()) { |
| 2423 case JVM_CONSTANT_Fieldref: { | |
| 2424 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
|
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2425 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2426 return classname->as_utf8(); |
| 2427 } | |
| 2428 default: | |
| 2429 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
| 2430 } | |
| 2431 ShouldNotReachHere(); | |
| 2432 return NULL; | |
| 2433 JVM_END | |
| 2434 | |
| 2435 | |
| 2436 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2437 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
|
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2438 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2439 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2440 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2441 switch (cp->tag_at(cp_index).value()) { |
| 2442 case JVM_CONSTANT_Methodref: | |
| 2443 case JVM_CONSTANT_InterfaceMethodref: { | |
| 2444 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
|
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2445 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2446 return classname->as_utf8(); |
| 2447 } | |
| 2448 default: | |
| 2449 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
| 2450 } | |
| 2451 ShouldNotReachHere(); | |
| 2452 return NULL; | |
| 2453 JVM_END | |
| 2454 | |
| 2455 | |
| 3938 | 2456 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
| 0 | 2457 JVMWrapper("JVM_GetCPFieldModifiers"); |
|
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2458 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2459 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
| 0 | 2460 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 2461 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
|
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2462 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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2463 ConstantPool* cp_called = InstanceKlass::cast(k_called)->constants(); |
| 0 | 2464 switch (cp->tag_at(cp_index).value()) { |
| 2465 case JVM_CONSTANT_Fieldref: { | |
|
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2466 Symbol* name = cp->uncached_name_ref_at(cp_index); |
|
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2467 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
| 3938 | 2468 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
| 2469 if (fs.name() == name && fs.signature() == signature) { | |
| 2470 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
| 0 | 2471 } |
| 2472 } | |
| 2473 return -1; | |
| 2474 } | |
| 2475 default: | |
| 2476 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
| 2477 } | |
| 2478 ShouldNotReachHere(); | |
| 2479 return 0; | |
| 2480 JVM_END | |
| 2481 | |
| 2482 | |
| 2483 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
| 2484 JVMWrapper("JVM_GetCPMethodModifiers"); | |
|
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2485 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2486 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
| 0 | 2487 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 2488 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
|
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2489 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2490 switch (cp->tag_at(cp_index).value()) { |
| 2491 case JVM_CONSTANT_Methodref: | |
| 2492 case JVM_CONSTANT_InterfaceMethodref: { | |
|
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2493 Symbol* name = cp->uncached_name_ref_at(cp_index); |
|
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|
2494 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
|
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2495 Array<Method*>* methods = InstanceKlass::cast(k_called)->methods(); |
| 0 | 2496 int methods_count = methods->length(); |
| 2497 for (int i = 0; i < methods_count; i++) { | |
|
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2498 Method* method = methods->at(i); |
| 0 | 2499 if (method->name() == name && method->signature() == signature) { |
| 2500 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 2501 } | |
| 2502 } | |
| 2503 return -1; | |
| 2504 } | |
| 2505 default: | |
| 2506 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
| 2507 } | |
| 2508 ShouldNotReachHere(); | |
| 2509 return 0; | |
| 2510 JVM_END | |
| 2511 | |
| 2512 | |
| 2513 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
| 2514 | |
| 2515 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
| 2516 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
| 2517 JVM_END | |
| 2518 | |
| 2519 | |
| 2520 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
| 2521 JVMWrapper("JVM_IsSameClassPackage"); | |
| 2522 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
| 2523 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
|
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2524 Klass* klass1 = java_lang_Class::as_Klass(class1_mirror); |
|
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|
2525 Klass* klass2 = java_lang_Class::as_Klass(class2_mirror); |
| 0 | 2526 return (jboolean) Reflection::is_same_class_package(klass1, klass2); |
| 2527 JVM_END | |
| 2528 | |
| 2529 | |
| 2530 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
| 2531 | |
| 2532 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
| 2533 JVMWrapper2("JVM_Open (%s)", fname); | |
| 2534 | |
| 2535 //%note jvm_r6 | |
|
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|
2536 int result = os::open(fname, flags, mode); |
| 0 | 2537 if (result >= 0) { |
| 2538 return result; | |
| 2539 } else { | |
| 2540 switch(errno) { | |
| 2541 case EEXIST: | |
| 2542 return JVM_EEXIST; | |
| 2543 default: | |
| 2544 return -1; | |
| 2545 } | |
| 2546 } | |
| 2547 JVM_END | |
| 2548 | |
| 2549 | |
| 2550 JVM_LEAF(jint, JVM_Close(jint fd)) | |
| 2551 JVMWrapper2("JVM_Close (0x%x)", fd); | |
| 2552 //%note jvm_r6 | |
|
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|
2553 return os::close(fd); |
| 0 | 2554 JVM_END |
| 2555 | |
| 2556 | |
| 2557 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
| 2558 JVMWrapper2("JVM_Read (0x%x)", fd); | |
| 2559 | |
| 2560 //%note jvm_r6 | |
|
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|
2561 return (jint)os::restartable_read(fd, buf, nbytes); |
| 0 | 2562 JVM_END |
| 2563 | |
| 2564 | |
| 2565 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
| 2566 JVMWrapper2("JVM_Write (0x%x)", fd); | |
| 2567 | |
| 2568 //%note jvm_r6 | |
|
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|
2569 return (jint)os::write(fd, buf, nbytes); |
| 0 | 2570 JVM_END |
| 2571 | |
| 2572 | |
| 2573 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
| 2574 JVMWrapper2("JVM_Available (0x%x)", fd); | |
| 2575 //%note jvm_r6 | |
|
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|
2576 return os::available(fd, pbytes); |
| 0 | 2577 JVM_END |
| 2578 | |
| 2579 | |
| 2580 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
| 2581 JVMWrapper4("JVM_Lseek (0x%x, %Ld, %d)", fd, offset, whence); | |
| 2582 //%note jvm_r6 | |
|
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|
2583 return os::lseek(fd, offset, whence); |
| 0 | 2584 JVM_END |
| 2585 | |
| 2586 | |
| 2587 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
| 2588 JVMWrapper3("JVM_SetLength (0x%x, %Ld)", fd, length); | |
|
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|
2589 return os::ftruncate(fd, length); |
| 0 | 2590 JVM_END |
| 2591 | |
| 2592 | |
| 2593 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
| 2594 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
| 2595 //%note jvm_r6 | |
|
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|
2596 return os::fsync(fd); |
| 0 | 2597 JVM_END |
| 2598 | |
| 2599 | |
| 2600 // Printing support ////////////////////////////////////////////////// | |
| 2601 extern "C" { | |
| 2602 | |
| 2603 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { | |
| 2604 // see bug 4399518, 4417214 | |
| 2605 if ((intptr_t)count <= 0) return -1; | |
| 2606 return vsnprintf(str, count, fmt, args); | |
| 2607 } | |
| 2608 | |
| 2609 | |
| 2610 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { | |
| 2611 va_list args; | |
| 2612 int len; | |
| 2613 va_start(args, fmt); | |
| 2614 len = jio_vsnprintf(str, count, fmt, args); | |
| 2615 va_end(args); | |
| 2616 return len; | |
| 2617 } | |
| 2618 | |
| 2619 | |
| 2620 int jio_fprintf(FILE* f, const char *fmt, ...) { | |
| 2621 int len; | |
| 2622 va_list args; | |
| 2623 va_start(args, fmt); | |
| 2624 len = jio_vfprintf(f, fmt, args); | |
| 2625 va_end(args); | |
| 2626 return len; | |
| 2627 } | |
| 2628 | |
| 2629 | |
| 2630 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { | |
| 2631 if (Arguments::vfprintf_hook() != NULL) { | |
| 2632 return Arguments::vfprintf_hook()(f, fmt, args); | |
| 2633 } else { | |
| 2634 return vfprintf(f, fmt, args); | |
| 2635 } | |
| 2636 } | |
| 2637 | |
| 2638 | |
| 2191 | 2639 JNIEXPORT int jio_printf(const char *fmt, ...) { |
| 0 | 2640 int len; |
| 2641 va_list args; | |
| 2642 va_start(args, fmt); | |
| 2643 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
| 2644 va_end(args); | |
| 2645 return len; | |
| 2646 } | |
| 2647 | |
| 2648 | |
| 2649 // HotSpot specific jio method | |
| 2650 void jio_print(const char* s) { | |
| 2651 // Try to make this function as atomic as possible. | |
| 2652 if (Arguments::vfprintf_hook() != NULL) { | |
| 2653 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
| 2654 } else { | |
|
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
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431
diff
changeset
|
2655 // Make an unused local variable to avoid warning from gcc 4.x compiler. |
|
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6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
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431
diff
changeset
|
2656 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
| 0 | 2657 } |
| 2658 } | |
| 2659 | |
| 2660 } // Extern C | |
| 2661 | |
| 2662 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
| 2663 | |
| 2664 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
| 2665 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
| 2666 // OSThread objects. The exception to this rule is when the target object is the thread | |
| 2667 // doing the operation, in which case we know that the thread won't exit until the | |
| 2668 // operation is done (all exits being voluntary). There are a few cases where it is | |
| 2669 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
| 2670 // you are alive. While these can still happen, they are not subject to deadlocks if | |
| 2671 // the lock is held while the operation occurs (this is not the case for suspend, for | |
| 2672 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
| 2673 // implementation is local to this file, we always lock Threads_lock for that one. | |
| 2674 | |
| 2675 static void thread_entry(JavaThread* thread, TRAPS) { | |
| 2676 HandleMark hm(THREAD); | |
| 2677 Handle obj(THREAD, thread->threadObj()); | |
| 2678 JavaValue result(T_VOID); | |
| 2679 JavaCalls::call_virtual(&result, | |
| 2680 obj, | |
| 1142 | 2681 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
|
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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2162
diff
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|
2682 vmSymbols::run_method_name(), |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2162
diff
changeset
|
2683 vmSymbols::void_method_signature(), |
| 0 | 2684 THREAD); |
| 2685 } | |
| 2686 | |
| 2687 | |
| 2688 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
| 2689 JVMWrapper("JVM_StartThread"); | |
| 2690 JavaThread *native_thread = NULL; | |
| 2691 | |
| 2692 // We cannot hold the Threads_lock when we throw an exception, | |
| 2693 // due to rank ordering issues. Example: we might need to grab the | |
| 2694 // Heap_lock while we construct the exception. | |
| 2695 bool throw_illegal_thread_state = false; | |
| 2696 | |
| 2697 // We must release the Threads_lock before we can post a jvmti event | |
| 2698 // in Thread::start. | |
| 2699 { | |
| 2700 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
| 2701 // we operate. | |
| 2702 MutexLocker mu(Threads_lock); | |
| 2703 | |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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1980
diff
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|
2704 // Since JDK 5 the java.lang.Thread threadStatus is used to prevent |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2705 // re-starting an already started thread, so we should usually find |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2706 // that the JavaThread is null. However for a JNI attached thread |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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1980
diff
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|
2707 // there is a small window between the Thread object being created |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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1980
diff
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|
2708 // (with its JavaThread set) and the update to its threadStatus, so we |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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1980
diff
changeset
|
2709 // have to check for this |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
changeset
|
2710 if (java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)) != NULL) { |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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1980
diff
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|
2711 throw_illegal_thread_state = true; |
| 0 | 2712 } else { |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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1980
diff
changeset
|
2713 // 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
|
2714 // for historical reasons we let the thread detect that itself when it starts running |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
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|
2715 |
| 0 | 2716 jlong size = |
| 2717 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
| 2718 // Allocate the C++ Thread structure and create the native thread. The | |
| 2719 // stack size retrieved from java is signed, but the constructor takes | |
| 2720 // size_t (an unsigned type), so avoid passing negative values which would | |
| 2721 // result in really large stacks. | |
| 2722 size_t sz = size > 0 ? (size_t) size : 0; | |
| 2723 native_thread = new JavaThread(&thread_entry, sz); | |
| 2724 | |
| 2725 // At this point it may be possible that no osthread was created for the | |
| 2726 // JavaThread due to lack of memory. Check for this situation and throw | |
| 2727 // an exception if necessary. Eventually we may want to change this so | |
| 2728 // that we only grab the lock if the thread was created successfully - | |
| 2729 // then we can also do this check and throw the exception in the | |
| 2730 // JavaThread constructor. | |
| 2731 if (native_thread->osthread() != NULL) { | |
| 2732 // Note: the current thread is not being used within "prepare". | |
| 2733 native_thread->prepare(jthread); | |
| 2734 } | |
| 2735 } | |
| 2736 } | |
| 2737 | |
| 2738 if (throw_illegal_thread_state) { | |
| 2739 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
| 2740 } | |
| 2741 | |
| 2742 assert(native_thread != NULL, "Starting null thread?"); | |
| 2743 | |
| 2744 if (native_thread->osthread() == NULL) { | |
| 2745 // No one should hold a reference to the 'native_thread'. | |
| 2746 delete native_thread; | |
| 2747 if (JvmtiExport::should_post_resource_exhausted()) { | |
| 2748 JvmtiExport::post_resource_exhausted( | |
| 2749 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
| 2750 "unable to create new native thread"); | |
| 2751 } | |
| 2752 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
| 2753 "unable to create new native thread"); | |
| 2754 } | |
| 2755 | |
| 2756 Thread::start(native_thread); | |
| 2757 | |
| 2758 JVM_END | |
| 2759 | |
| 2760 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
| 2761 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
| 2762 // but is thought to be reliable and simple. In the case, where the receiver is the | |
|
2162
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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1980
diff
changeset
|
2763 // same thread as the sender, no safepoint is needed. |
| 0 | 2764 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
| 2765 JVMWrapper("JVM_StopThread"); | |
| 2766 | |
| 2767 oop java_throwable = JNIHandles::resolve(throwable); | |
| 2768 if (java_throwable == NULL) { | |
| 2769 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 2770 } | |
| 2771 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2772 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
|
4872
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
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parents:
4717
diff
changeset
|
2773 Events::log_exception(JavaThread::current(), |
|
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
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parents:
4717
diff
changeset
|
2774 "JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", |
|
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
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4717
diff
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|
2775 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
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|
2776 // First check if thread is alive |
| 0 | 2777 if (receiver != NULL) { |
| 2778 // Check if exception is getting thrown at self (use oop equality, since the | |
| 2779 // target object might exit) | |
| 2780 if (java_thread == thread->threadObj()) { | |
| 2781 THROW_OOP(java_throwable); | |
| 2782 } else { | |
| 2783 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
| 2784 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
| 2785 } | |
| 2786 } | |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
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|
2787 else { |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2788 // Either: |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2789 // - 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
|
2790 // - 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
|
2791 // 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
|
2792 // 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
|
2793 // 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
|
2794 // 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
|
2795 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
|
2796 } |
| 0 | 2797 JVM_END |
| 2798 | |
| 2799 | |
| 2800 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
| 2801 JVMWrapper("JVM_IsThreadAlive"); | |
| 2802 | |
| 2803 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
| 2804 return java_lang_Thread::is_alive(thread_oop); | |
| 2805 JVM_END | |
| 2806 | |
| 2807 | |
| 2808 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
| 2809 JVMWrapper("JVM_SuspendThread"); | |
| 2810 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2811 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
| 2812 | |
| 2813 if (receiver != NULL) { | |
| 2814 // thread has run and has not exited (still on threads list) | |
| 2815 | |
| 2816 { | |
| 2817 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
| 2818 if (receiver->is_external_suspend()) { | |
| 2819 // Don't allow nested external suspend requests. We can't return | |
| 2820 // an error from this interface so just ignore the problem. | |
| 2821 return; | |
| 2822 } | |
| 2823 if (receiver->is_exiting()) { // thread is in the process of exiting | |
| 2824 return; | |
| 2825 } | |
| 2826 receiver->set_external_suspend(); | |
| 2827 } | |
| 2828 | |
| 2829 // java_suspend() will catch threads in the process of exiting | |
| 2830 // and will ignore them. | |
| 2831 receiver->java_suspend(); | |
| 2832 | |
| 2833 // It would be nice to have the following assertion in all the | |
| 2834 // time, but it is possible for a racing resume request to have | |
| 2835 // resumed this thread right after we suspended it. Temporarily | |
| 2836 // enable this assertion if you are chasing a different kind of | |
| 2837 // bug. | |
| 2838 // | |
| 2839 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
| 2840 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
| 2841 } | |
| 2842 JVM_END | |
| 2843 | |
| 2844 | |
| 2845 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
| 2846 JVMWrapper("JVM_ResumeThread"); | |
| 2847 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
| 2848 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
| 2849 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
| 2850 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
| 2851 // looks at it. | |
| 2852 MutexLocker ml(Threads_lock); | |
| 2853 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 2854 if (thr != NULL) { | |
| 2855 // the thread has run and is not in the process of exiting | |
| 2856 thr->java_resume(); | |
| 2857 } | |
| 2858 JVM_END | |
| 2859 | |
| 2860 | |
| 2861 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
| 2862 JVMWrapper("JVM_SetThreadPriority"); | |
| 2863 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 2864 MutexLocker ml(Threads_lock); | |
| 2865 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2866 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
| 2867 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 2868 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
| 2869 Thread::set_priority(thr, (ThreadPriority)prio); | |
| 2870 } | |
| 2871 JVM_END | |
| 2872 | |
| 2873 | |
| 2874 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
| 2875 JVMWrapper("JVM_Yield"); | |
| 2876 if (os::dont_yield()) return; | |
| 4006 | 2877 #ifndef USDT2 |
|
1324
e392695de029
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fparain
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1144
diff
changeset
|
2878 HS_DTRACE_PROBE0(hotspot, thread__yield); |
| 4006 | 2879 #else /* USDT2 */ |
| 2880 HOTSPOT_THREAD_YIELD(); | |
| 2881 #endif /* USDT2 */ | |
| 0 | 2882 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
| 2883 // Critical for similar threading behaviour | |
| 2884 if (ConvertYieldToSleep) { | |
| 2885 os::sleep(thread, MinSleepInterval, false); | |
| 2886 } else { | |
| 2887 os::yield(); | |
| 2888 } | |
| 2889 JVM_END | |
| 2890 | |
| 2891 | |
| 2892 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
| 2893 JVMWrapper("JVM_Sleep"); | |
| 2894 | |
| 2895 if (millis < 0) { | |
| 2896 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
| 2897 } | |
| 2898 | |
| 2899 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
| 2900 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 2901 } | |
| 2902 | |
| 2903 // Save current thread state and restore it at the end of this block. | |
| 2904 // And set new thread state to SLEEPING. | |
| 2905 JavaThreadSleepState jtss(thread); | |
| 2906 | |
| 4006 | 2907 #ifndef USDT2 |
|
1324
e392695de029
6935224: Adding new DTrace probes to work with Palantir
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parents:
1144
diff
changeset
|
2908 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); |
| 4006 | 2909 #else /* USDT2 */ |
| 2910 HOTSPOT_THREAD_SLEEP_BEGIN( | |
| 2911 millis); | |
| 2912 #endif /* USDT2 */ | |
|
1324
e392695de029
6935224: Adding new DTrace probes to work with Palantir
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1144
diff
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|
2913 |
| 0 | 2914 if (millis == 0) { |
| 2915 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
| 2916 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
| 2917 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
| 2918 // for SOLARIS | |
| 2919 if (ConvertSleepToYield) { | |
| 2920 os::yield(); | |
| 2921 } else { | |
| 2922 ThreadState old_state = thread->osthread()->get_state(); | |
| 2923 thread->osthread()->set_state(SLEEPING); | |
| 2924 os::sleep(thread, MinSleepInterval, false); | |
| 2925 thread->osthread()->set_state(old_state); | |
| 2926 } | |
| 2927 } else { | |
| 2928 ThreadState old_state = thread->osthread()->get_state(); | |
| 2929 thread->osthread()->set_state(SLEEPING); | |
| 2930 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
| 2931 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
| 2932 // us while we were sleeping. We do not overwrite those. | |
| 2933 if (!HAS_PENDING_EXCEPTION) { | |
| 4006 | 2934 #ifndef USDT2 |
|
1324
e392695de029
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1144
diff
changeset
|
2935 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); |
| 4006 | 2936 #else /* USDT2 */ |
| 2937 HOTSPOT_THREAD_SLEEP_END( | |
| 2938 1); | |
| 2939 #endif /* USDT2 */ | |
| 0 | 2940 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
| 2941 // to properly restore the thread state. That's likely wrong. | |
| 2942 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 2943 } | |
| 2944 } | |
| 2945 thread->osthread()->set_state(old_state); | |
| 2946 } | |
| 4006 | 2947 #ifndef USDT2 |
|
1324
e392695de029
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1144
diff
changeset
|
2948 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); |
| 4006 | 2949 #else /* USDT2 */ |
| 2950 HOTSPOT_THREAD_SLEEP_END( | |
| 2951 0); | |
| 2952 #endif /* USDT2 */ | |
| 0 | 2953 JVM_END |
| 2954 | |
| 2955 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
| 2956 JVMWrapper("JVM_CurrentThread"); | |
| 2957 oop jthread = thread->threadObj(); | |
| 2958 assert (thread != NULL, "no current thread!"); | |
| 2959 return JNIHandles::make_local(env, jthread); | |
| 2960 JVM_END | |
| 2961 | |
| 2962 | |
| 2963 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
| 2964 JVMWrapper("JVM_CountStackFrames"); | |
| 2965 | |
| 2966 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 2967 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2968 bool throw_illegal_thread_state = false; | |
| 2969 int count = 0; | |
| 2970 | |
| 2971 { | |
| 2972 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 2973 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 2974 // acquire of the lock | |
| 2975 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 2976 | |
| 2977 if (thr == NULL) { | |
| 2978 // do nothing | |
| 2979 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
| 2980 // Check whether this java thread has been suspended already. If not, throws | |
| 2981 // IllegalThreadStateException. We defer to throw that exception until | |
| 2982 // Threads_lock is released since loading exception class has to leave VM. | |
| 2983 // The correct way to test a thread is actually suspended is | |
| 2984 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
| 2985 // the Threads_lock. The above tests are sufficient for our purposes | |
| 2986 // provided the walkability of the stack is stable - which it isn't | |
| 2987 // 100% but close enough for most practical purposes. | |
| 2988 throw_illegal_thread_state = true; | |
| 2989 } else { | |
| 2990 // Count all java activation, i.e., number of vframes | |
| 2991 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
| 2992 // Native frames are not counted | |
| 2993 if (!vfst.method()->is_native()) count++; | |
| 2994 } | |
| 2995 } | |
| 2996 } | |
| 2997 | |
| 2998 if (throw_illegal_thread_state) { | |
| 2999 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
| 3000 "this thread is not suspended"); | |
| 3001 } | |
| 3002 return count; | |
| 3003 JVM_END | |
| 3004 | |
| 3005 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
| 3006 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
| 3007 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
| 3008 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
| 3009 // outside the critical section. Threads_lock is hot so we want to minimize | |
| 3010 // the hold-time. A cleaner interface would be to decompose interrupt into | |
| 3011 // two steps. The 1st phase, performed under Threads_lock, would return | |
| 3012 // a closure that'd be invoked after Threads_lock was dropped. | |
| 3013 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
| 3014 // admit spurious wakeups. | |
| 3015 | |
| 3016 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
| 3017 JVMWrapper("JVM_Interrupt"); | |
| 3018 | |
| 3019 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3020 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3021 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 3022 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 3023 // acquire of the lock | |
| 3024 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3025 if (thr != NULL) { | |
| 3026 Thread::interrupt(thr); | |
| 3027 } | |
| 3028 JVM_END | |
| 3029 | |
| 3030 | |
| 3031 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
| 3032 JVMWrapper("JVM_IsInterrupted"); | |
| 3033 | |
| 3034 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3035 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3036 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 3037 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 3038 // acquire of the lock | |
| 3039 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3040 if (thr == NULL) { | |
| 3041 return JNI_FALSE; | |
| 3042 } else { | |
| 3043 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
| 3044 } | |
| 3045 JVM_END | |
| 3046 | |
| 3047 | |
| 3048 // Return true iff the current thread has locked the object passed in | |
| 3049 | |
| 3050 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
| 3051 JVMWrapper("JVM_HoldsLock"); | |
| 3052 assert(THREAD->is_Java_thread(), "sanity check"); | |
| 3053 if (obj == NULL) { | |
| 3054 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
| 3055 } | |
| 3056 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
| 3057 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
| 3058 JVM_END | |
| 3059 | |
| 3060 | |
| 3061 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
| 3062 JVMWrapper("JVM_DumpAllStacks"); | |
| 3063 VM_PrintThreads op; | |
| 3064 VMThread::execute(&op); | |
| 3065 if (JvmtiExport::should_post_data_dump()) { | |
| 3066 JvmtiExport::post_data_dump(); | |
| 3067 } | |
| 3068 JVM_END | |
| 3069 | |
| 4006 | 3070 JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name)) |
| 3071 JVMWrapper("JVM_SetNativeThreadName"); | |
| 3072 ResourceMark rm(THREAD); | |
| 3073 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3074 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 3075 // Thread naming only supported for the current thread, doesn't work for | |
| 3076 // target threads. | |
| 3077 if (Thread::current() == thr && !thr->has_attached_via_jni()) { | |
| 3078 // we don't set the name of an attached thread to avoid stepping | |
| 3079 // on other programs | |
| 3080 const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
| 3081 os::set_native_thread_name(thread_name); | |
| 3082 } | |
| 3083 JVM_END | |
| 0 | 3084 |
| 3085 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
| 3086 | |
| 3087 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
| 3088 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
| 3089 if (jthread->privileged_stack_top() == NULL) return false; | |
| 3090 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
| 3091 oop loader = jthread->privileged_stack_top()->class_loader(); | |
| 3092 if (loader == NULL) return true; | |
| 3093 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
| 3094 if (trusted) return true; | |
| 3095 } | |
| 3096 return false; | |
| 3097 } | |
| 3098 | |
| 3099 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
| 3100 JVMWrapper("JVM_CurrentLoadedClass"); | |
| 3101 ResourceMark rm(THREAD); | |
| 3102 | |
| 3103 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3104 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3105 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3106 if (trusted) return NULL; | |
| 3107 | |
|
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3108 Method* m = vfst.method(); |
| 0 | 3109 if (!m->is_native()) { |
|
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3110 InstanceKlass* holder = m->method_holder(); |
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3111 oop loader = holder->class_loader(); |
| 0 | 3112 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
|
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3113 return (jclass) JNIHandles::make_local(env, holder->java_mirror()); |
| 0 | 3114 } |
| 3115 } | |
| 3116 } | |
| 3117 return NULL; | |
| 3118 JVM_END | |
| 3119 | |
| 3120 | |
| 3121 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
| 3122 JVMWrapper("JVM_CurrentClassLoader"); | |
| 3123 ResourceMark rm(THREAD); | |
| 3124 | |
| 3125 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3126 | |
| 3127 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3128 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3129 if (trusted) return NULL; | |
| 3130 | |
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3131 Method* m = vfst.method(); |
| 0 | 3132 if (!m->is_native()) { |
|
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3133 InstanceKlass* holder = m->method_holder(); |
| 0 | 3134 assert(holder->is_klass(), "just checking"); |
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3135 oop loader = holder->class_loader(); |
| 0 | 3136 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
| 3137 return JNIHandles::make_local(env, loader); | |
| 3138 } | |
| 3139 } | |
| 3140 } | |
| 3141 return NULL; | |
| 3142 JVM_END | |
| 3143 | |
| 3144 | |
| 3145 // Utility object for collecting method holders walking down the stack | |
| 3146 class KlassLink: public ResourceObj { | |
| 3147 public: | |
| 3148 KlassHandle klass; | |
| 3149 KlassLink* next; | |
| 3150 | |
| 3151 KlassLink(KlassHandle k) { klass = k; next = NULL; } | |
| 3152 }; | |
| 3153 | |
| 3154 | |
| 3155 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
| 3156 JVMWrapper("JVM_GetClassContext"); | |
| 3157 ResourceMark rm(THREAD); | |
| 3158 JvmtiVMObjectAllocEventCollector oam; | |
| 3159 // Collect linked list of (handles to) method holders | |
| 3160 KlassLink* first = NULL; | |
| 3161 KlassLink* last = NULL; | |
| 3162 int depth = 0; | |
| 3163 | |
| 3164 for(vframeStream vfst(thread); !vfst.at_end(); vfst.security_get_caller_frame(1)) { | |
| 3165 // Native frames are not returned | |
| 3166 if (!vfst.method()->is_native()) { | |
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3167 Klass* holder = vfst.method()->method_holder(); |
| 0 | 3168 assert(holder->is_klass(), "just checking"); |
| 3169 depth++; | |
| 3170 KlassLink* l = new KlassLink(KlassHandle(thread, holder)); | |
| 3171 if (first == NULL) { | |
| 3172 first = last = l; | |
| 3173 } else { | |
| 3174 last->next = l; | |
| 3175 last = l; | |
| 3176 } | |
| 3177 } | |
| 3178 } | |
| 3179 | |
| 3180 // Create result array of type [Ljava/lang/Class; | |
| 1142 | 3181 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), depth, CHECK_NULL); |
| 0 | 3182 // Fill in mirrors corresponding to method holders |
| 3183 int index = 0; | |
| 3184 while (first != NULL) { | |
| 6983 | 3185 result->obj_at_put(index++, first->klass()->java_mirror()); |
| 0 | 3186 first = first->next; |
| 3187 } | |
| 3188 assert(index == depth, "just checking"); | |
| 3189 | |
| 3190 return (jobjectArray) JNIHandles::make_local(env, result); | |
| 3191 JVM_END | |
| 3192 | |
| 3193 | |
| 3194 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
| 3195 JVMWrapper("JVM_ClassDepth"); | |
| 3196 ResourceMark rm(THREAD); | |
| 3197 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 3198 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
| 3199 | |
| 3200 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
|
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3201 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
|
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3202 if (class_name_sym == NULL) { |
| 0 | 3203 return -1; |
| 3204 } | |
| 3205 | |
| 3206 int depth = 0; | |
| 3207 | |
| 3208 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3209 if (!vfst.method()->is_native()) { | |
|
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3210 InstanceKlass* holder = vfst.method()->method_holder(); |
| 0 | 3211 assert(holder->is_klass(), "just checking"); |
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3212 if (holder->name() == class_name_sym) { |
| 0 | 3213 return depth; |
| 3214 } | |
| 3215 depth++; | |
| 3216 } | |
| 3217 } | |
| 3218 return -1; | |
| 3219 JVM_END | |
| 3220 | |
| 3221 | |
| 3222 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
| 3223 JVMWrapper("JVM_ClassLoaderDepth"); | |
| 3224 ResourceMark rm(THREAD); | |
| 3225 int depth = 0; | |
| 3226 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3227 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
| 3228 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3229 if (trusted) return -1; | |
| 3230 | |
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3231 Method* m = vfst.method(); |
| 0 | 3232 if (!m->is_native()) { |
|
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3233 InstanceKlass* holder = m->method_holder(); |
| 0 | 3234 assert(holder->is_klass(), "just checking"); |
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3235 oop loader = holder->class_loader(); |
| 0 | 3236 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
| 3237 return depth; | |
| 3238 } | |
| 3239 depth++; | |
| 3240 } | |
| 3241 } | |
| 3242 return -1; | |
| 3243 JVM_END | |
| 3244 | |
| 3245 | |
| 3246 // java.lang.Package //////////////////////////////////////////////////////////////// | |
| 3247 | |
| 3248 | |
| 3249 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
| 3250 JVMWrapper("JVM_GetSystemPackage"); | |
| 3251 ResourceMark rm(THREAD); | |
| 3252 JvmtiVMObjectAllocEventCollector oam; | |
| 3253 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
| 3254 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
| 3255 return (jstring) JNIHandles::make_local(result); | |
| 3256 JVM_END | |
| 3257 | |
| 3258 | |
| 3259 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
| 3260 JVMWrapper("JVM_GetSystemPackages"); | |
| 3261 JvmtiVMObjectAllocEventCollector oam; | |
| 3262 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
| 3263 return (jobjectArray) JNIHandles::make_local(result); | |
| 3264 JVM_END | |
| 3265 | |
| 3266 | |
| 3267 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
| 3268 | |
|
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3269 bool force_verify_field_access(Klass* current_class, Klass* field_class, AccessFlags access, bool classloader_only) { |
| 0 | 3270 if (current_class == NULL) { |
| 3271 return true; | |
| 3272 } | |
| 3273 if ((current_class == field_class) || access.is_public()) { | |
| 3274 return true; | |
| 3275 } | |
| 3276 | |
| 3277 if (access.is_protected()) { | |
| 3278 // See if current_class is a subclass of field_class | |
| 6983 | 3279 if (current_class->is_subclass_of(field_class)) { |
| 0 | 3280 return true; |
| 3281 } | |
| 3282 } | |
| 3283 | |
|
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3284 return (!access.is_private() && InstanceKlass::cast(current_class)->is_same_class_package(field_class)); |
| 0 | 3285 } |
| 3286 | |
| 3287 | |
| 3288 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
| 3289 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
| 3290 JVMWrapper("JVM_AllocateNewObject"); | |
| 3291 JvmtiVMObjectAllocEventCollector oam; | |
| 3292 // Receiver is not used | |
| 3293 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
| 3294 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
| 3295 | |
| 3296 // Cannot instantiate primitive types | |
| 3297 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
| 3298 ResourceMark rm(THREAD); | |
| 3299 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3300 } | |
| 3301 | |
| 3302 // Arrays not allowed here, must use JVM_AllocateNewArray | |
| 6983 | 3303 if (java_lang_Class::as_Klass(curr_mirror)->oop_is_array() || |
| 3304 java_lang_Class::as_Klass(init_mirror)->oop_is_array()) { | |
| 0 | 3305 ResourceMark rm(THREAD); |
| 3306 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3307 } | |
| 3308 | |
|
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3309 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_Klass(curr_mirror)); |
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3310 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_Klass(init_mirror)); |
| 0 | 3311 |
| 3312 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
| 3313 | |
| 3314 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
| 3315 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
| 3316 | |
| 3317 // Make sure klass is initialized, since we are about to instantiate one of them. | |
| 3318 curr_klass->initialize(CHECK_NULL); | |
| 3319 | |
| 3320 methodHandle m (THREAD, | |
| 3321 init_klass->find_method(vmSymbols::object_initializer_name(), | |
| 3322 vmSymbols::void_method_signature())); | |
| 3323 if (m.is_null()) { | |
| 3324 ResourceMark rm(THREAD); | |
| 3325 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
| 6983 | 3326 Method::name_and_sig_as_C_string(init_klass(), |
| 0 | 3327 vmSymbols::object_initializer_name(), |
| 3328 vmSymbols::void_method_signature())); | |
| 3329 } | |
| 3330 | |
| 3331 if (curr_klass == init_klass && !m->is_public()) { | |
| 3332 // Calling the constructor for class 'curr_klass'. | |
| 3333 // Only allow calls to a public no-arg constructor. | |
| 3334 // This path corresponds to creating an Externalizable object. | |
| 3335 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3336 } | |
| 3337 | |
| 3338 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
| 3339 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
| 3340 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3341 } | |
| 3342 | |
| 3343 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
| 3344 // Call constructor m. This might call a constructor higher up in the hierachy | |
| 3345 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
| 3346 | |
| 3347 return JNIHandles::make_local(obj()); | |
| 3348 JVM_END | |
| 3349 | |
| 3350 | |
| 3351 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
| 3352 JVMWrapper("JVM_AllocateNewArray"); | |
| 3353 JvmtiVMObjectAllocEventCollector oam; | |
| 3354 oop mirror = JNIHandles::resolve_non_null(currClass); | |
| 3355 | |
| 3356 if (java_lang_Class::is_primitive(mirror)) { | |
| 3357 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3358 } | |
|
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3359 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 3360 oop result; |
| 3361 | |
|
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3362 if (k->oop_is_typeArray()) { |
| 0 | 3363 // typeArray |
|
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3364 result = TypeArrayKlass::cast(k)->allocate(length, CHECK_NULL); |
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3365 } else if (k->oop_is_objArray()) { |
| 0 | 3366 // objArray |
|
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3367 ObjArrayKlass* oak = ObjArrayKlass::cast(k); |
| 0 | 3368 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) |
| 3369 result = oak->allocate(length, CHECK_NULL); | |
| 3370 } else { | |
| 3371 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3372 } | |
| 3373 return JNIHandles::make_local(env, result); | |
| 3374 JVM_END | |
| 3375 | |
| 3376 | |
| 3377 // Return the first non-null class loader up the execution stack, or null | |
| 3378 // if only code from the null class loader is on the stack. | |
| 3379 | |
| 3380 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
| 3381 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3382 // UseNewReflection | |
| 3383 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
|
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3384 oop loader = vfst.method()->method_holder()->class_loader(); |
| 0 | 3385 if (loader != NULL) { |
| 3386 return JNIHandles::make_local(env, loader); | |
| 3387 } | |
| 3388 } | |
| 3389 return NULL; | |
| 3390 JVM_END | |
| 3391 | |
| 3392 | |
| 3393 // Load a class relative to the most recent class on the stack with a non-null | |
| 3394 // classloader. | |
| 3395 // This function has been deprecated and should not be considered part of the | |
| 3396 // specified JVM interface. | |
| 3397 | |
| 3398 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
| 3399 jclass currClass, jstring currClassName)) | |
| 3400 JVMWrapper("JVM_LoadClass0"); | |
| 3401 // Receiver is not used | |
| 3402 ResourceMark rm(THREAD); | |
| 3403 | |
| 3404 // Class name argument is not guaranteed to be in internal format | |
| 3405 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
| 3406 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
| 3407 | |
| 3408 const char* str = java_lang_String::as_utf8_string(string()); | |
| 3409 | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
3410 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
| 0 | 3411 // It's impossible to create this class; the name cannot fit |
| 3412 // into the constant pool. | |
| 3413 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
| 3414 } | |
| 3415 | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
3416 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
| 0 | 3417 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
| 3418 // Find the most recent class on the stack with a non-null classloader | |
| 3419 oop loader = NULL; | |
| 3420 oop protection_domain = NULL; | |
| 3421 if (curr_klass.is_null()) { | |
| 3422 for (vframeStream vfst(thread); | |
| 3423 !vfst.at_end() && loader == NULL; | |
| 3424 vfst.next()) { | |
| 3425 if (!vfst.method()->is_native()) { | |
|
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3426 InstanceKlass* holder = vfst.method()->method_holder(); |
|
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3427 loader = holder->class_loader(); |
|
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3428 protection_domain = holder->protection_domain(); |
| 0 | 3429 } |
| 3430 } | |
| 3431 } else { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3432 Klass* curr_klass_oop = java_lang_Class::as_Klass(curr_klass()); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3433 loader = InstanceKlass::cast(curr_klass_oop)->class_loader(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3434 protection_domain = InstanceKlass::cast(curr_klass_oop)->protection_domain(); |
| 0 | 3435 } |
| 3436 Handle h_loader(THREAD, loader); | |
| 3437 Handle h_prot (THREAD, protection_domain); | |
|
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3438 jclass result = find_class_from_class_loader(env, name, true, h_loader, h_prot, |
|
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3439 false, thread); |
|
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3440 if (TraceClassResolution && result != NULL) { |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3441 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
|
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3442 } |
|
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3443 return result; |
| 0 | 3444 JVM_END |
| 3445 | |
| 3446 | |
| 3447 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
| 3448 | |
| 3449 | |
| 3450 // resolve array handle and check arguments | |
| 3451 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
| 3452 if (arr == NULL) { | |
| 3453 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 3454 } | |
| 3455 oop a = JNIHandles::resolve_non_null(arr); | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3456 if (!a->is_array() || (type_array_only && !a->is_typeArray())) { |
| 0 | 3457 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); |
| 3458 } | |
| 3459 return arrayOop(a); | |
| 3460 } | |
| 3461 | |
| 3462 | |
| 3463 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
| 3464 JVMWrapper("JVM_GetArrayLength"); | |
| 3465 arrayOop a = check_array(env, arr, false, CHECK_0); | |
| 3466 return a->length(); | |
| 3467 JVM_END | |
| 3468 | |
| 3469 | |
| 3470 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
| 3471 JVMWrapper("JVM_Array_Get"); | |
| 3472 JvmtiVMObjectAllocEventCollector oam; | |
| 3473 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
| 3474 jvalue value; | |
| 3475 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
| 3476 oop box = Reflection::box(&value, type, CHECK_NULL); | |
| 3477 return JNIHandles::make_local(env, box); | |
| 3478 JVM_END | |
| 3479 | |
| 3480 | |
| 3481 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
| 3482 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
| 3483 jvalue value; | |
| 3484 value.i = 0; // to initialize value before getting used in CHECK | |
| 3485 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
| 3486 assert(a->is_typeArray(), "just checking"); | |
| 3487 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
| 3488 BasicType wide_type = (BasicType) wCode; | |
| 3489 if (type != wide_type) { | |
| 3490 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
| 3491 } | |
| 3492 return value; | |
| 3493 JVM_END | |
| 3494 | |
| 3495 | |
| 3496 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
| 3497 JVMWrapper("JVM_SetArrayElement"); | |
| 3498 arrayOop a = check_array(env, arr, false, CHECK); | |
| 3499 oop box = JNIHandles::resolve(val); | |
| 3500 jvalue value; | |
| 3501 value.i = 0; // to initialize value before getting used in CHECK | |
| 3502 BasicType value_type; | |
| 3503 if (a->is_objArray()) { | |
| 3504 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
| 3505 value_type = Reflection::unbox_for_regular_object(box, &value); | |
| 3506 } else { | |
| 3507 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
| 3508 } | |
| 3509 Reflection::array_set(&value, a, index, value_type, CHECK); | |
| 3510 JVM_END | |
| 3511 | |
| 3512 | |
| 3513 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
| 3514 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
| 3515 arrayOop a = check_array(env, arr, true, CHECK); | |
| 3516 assert(a->is_typeArray(), "just checking"); | |
| 3517 BasicType value_type = (BasicType) vCode; | |
| 3518 Reflection::array_set(&v, a, index, value_type, CHECK); | |
| 3519 JVM_END | |
| 3520 | |
| 3521 | |
| 3522 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
| 3523 JVMWrapper("JVM_NewArray"); | |
| 3524 JvmtiVMObjectAllocEventCollector oam; | |
| 3525 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3526 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
| 3527 return JNIHandles::make_local(env, result); | |
| 3528 JVM_END | |
| 3529 | |
| 3530 | |
| 3531 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
| 3532 JVMWrapper("JVM_NewMultiArray"); | |
| 3533 JvmtiVMObjectAllocEventCollector oam; | |
| 3534 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
| 3535 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3536 assert(dim_array->is_typeArray(), "just checking"); | |
| 3537 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
| 3538 return JNIHandles::make_local(env, result); | |
| 3539 JVM_END | |
| 3540 | |
| 3541 | |
| 3542 // Networking library support //////////////////////////////////////////////////////////////////// | |
| 3543 | |
| 3544 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
| 3545 JVMWrapper("JVM_InitializeSocketLibrary"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3546 return 0; |
| 0 | 3547 JVM_END |
| 3548 | |
| 3549 | |
| 3550 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
| 3551 JVMWrapper("JVM_Socket"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3552 return os::socket(domain, type, protocol); |
| 0 | 3553 JVM_END |
| 3554 | |
| 3555 | |
| 3556 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
| 3557 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
| 3558 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3559 return os::socket_close(fd); |
| 0 | 3560 JVM_END |
| 3561 | |
| 3562 | |
| 3563 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
| 3564 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
| 3565 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3566 return os::socket_shutdown(fd, howto); |
| 0 | 3567 JVM_END |
| 3568 | |
| 3569 | |
| 3570 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3571 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
| 3572 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3573 return os::recv(fd, buf, (size_t)nBytes, (uint)flags); |
| 0 | 3574 JVM_END |
| 3575 | |
| 3576 | |
| 3577 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3578 JVMWrapper2("JVM_Send (0x%x)", fd); | |
| 3579 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3580 return os::send(fd, buf, (size_t)nBytes, (uint)flags); |
| 0 | 3581 JVM_END |
| 3582 | |
| 3583 | |
| 3584 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
| 3585 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
| 3586 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3587 return os::timeout(fd, timeout); |
| 0 | 3588 JVM_END |
| 3589 | |
| 3590 | |
| 3591 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
| 3592 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
| 3593 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3594 return os::listen(fd, count); |
| 0 | 3595 JVM_END |
| 3596 | |
| 3597 | |
| 3598 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
| 3599 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
| 3600 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3601 return os::connect(fd, him, (socklen_t)len); |
| 0 | 3602 JVM_END |
| 3603 | |
| 3604 | |
| 3605 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
| 3606 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
| 3607 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3608 return os::bind(fd, him, (socklen_t)len); |
| 0 | 3609 JVM_END |
| 3610 | |
| 3611 | |
| 3612 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
| 3613 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
| 3614 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3615 socklen_t socklen = (socklen_t)(*len); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3616 jint result = os::accept(fd, him, &socklen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3617 *len = (jint)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3618 return result; |
| 0 | 3619 JVM_END |
| 3620 | |
| 3621 | |
| 3622 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
| 3623 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
| 3624 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3625 socklen_t socklen = (socklen_t)(*fromlen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3626 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
|
3627 *fromlen = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3628 return result; |
| 0 | 3629 JVM_END |
| 3630 | |
| 3631 | |
| 3632 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
| 3633 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
| 3634 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3635 socklen_t socklen = (socklen_t)(*len); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3636 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
|
3637 *len = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3638 return result; |
| 0 | 3639 JVM_END |
| 3640 | |
| 3641 | |
| 3642 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
| 3643 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
| 3644 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3645 return os::sendto(fd, buf, (size_t)len, (uint)flags, to, (socklen_t)tolen); |
| 0 | 3646 JVM_END |
| 3647 | |
| 3648 | |
| 3649 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
| 3650 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
| 3651 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3652 return os::socket_available(fd, pbytes); |
| 0 | 3653 JVM_END |
| 3654 | |
| 3655 | |
| 3656 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
| 3657 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
| 3658 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3659 socklen_t socklen = (socklen_t)(*optlen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3660 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
|
3661 *optlen = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3662 return result; |
| 0 | 3663 JVM_END |
| 3664 | |
| 3665 | |
| 3666 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
| 3667 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
| 3668 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3669 return os::set_sock_opt(fd, level, optname, optval, (socklen_t)optlen); |
| 0 | 3670 JVM_END |
| 3671 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3672 |
| 0 | 3673 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) |
| 3674 JVMWrapper("JVM_GetHostName"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3675 return os::get_host_name(name, namelen); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3676 JVM_END |
| 0 | 3677 |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3678 |
| 0 | 3679 // Library support /////////////////////////////////////////////////////////////////////////// |
| 3680 | |
| 3681 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
| 3682 //%note jvm_ct | |
| 3683 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
| 3684 char ebuf[1024]; | |
| 3685 void *load_result; | |
| 3686 { | |
| 3687 ThreadToNativeFromVM ttnfvm(thread); | |
|
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828eafbd85cc
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parents:
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diff
changeset
|
3688 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
| 0 | 3689 } |
| 3690 if (load_result == NULL) { | |
| 3691 char msg[1024]; | |
| 3692 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
| 3693 // Since 'ebuf' may contain a string encoded using | |
| 3694 // platform encoding scheme, we need to pass | |
| 3695 // Exceptions::unsafe_to_utf8 to the new_exception method | |
| 3696 // as the last argument. See bug 6367357. | |
| 3697 Handle h_exception = | |
| 3698 Exceptions::new_exception(thread, | |
| 3699 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
| 3700 msg, Exceptions::unsafe_to_utf8); | |
| 3701 | |
| 3702 THROW_HANDLE_0(h_exception); | |
| 3703 } | |
| 3704 return load_result; | |
| 3705 JVM_END | |
| 3706 | |
| 3707 | |
| 3708 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
| 3709 JVMWrapper("JVM_UnloadLibrary"); | |
|
1980
828eafbd85cc
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diff
changeset
|
3710 os::dll_unload(handle); |
| 0 | 3711 JVM_END |
| 3712 | |
| 3713 | |
| 3714 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
| 3715 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
|
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diff
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|
3716 return os::dll_lookup(handle, name); |
| 0 | 3717 JVM_END |
| 3718 | |
|
4717
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diff
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|
3719 |
| 0 | 3720 // Floating point support //////////////////////////////////////////////////////////////////// |
| 3721 | |
| 3722 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
| 3723 JVMWrapper("JVM_IsNaN"); | |
| 3724 return g_isnan(a); | |
| 3725 JVM_END | |
| 3726 | |
| 3727 | |
| 3728 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
| 3729 | |
| 3730 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
| 3731 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
| 3732 return Threads::is_supported_jni_version_including_1_1(version); | |
| 3733 JVM_END | |
| 3734 | |
| 3735 | |
| 3736 // String support /////////////////////////////////////////////////////////////////////////// | |
| 3737 | |
| 3738 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
| 3739 JVMWrapper("JVM_InternString"); | |
| 3740 JvmtiVMObjectAllocEventCollector oam; | |
| 3741 if (str == NULL) return NULL; | |
| 3742 oop string = JNIHandles::resolve_non_null(str); | |
| 3743 oop result = StringTable::intern(string, CHECK_NULL); | |
| 3744 return (jstring) JNIHandles::make_local(env, result); | |
| 3745 JVM_END | |
| 3746 | |
| 3747 | |
| 3748 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
| 3749 | |
| 3750 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
| 3751 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
| 3752 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
| 3753 // that only works with java threads. | |
| 3754 | |
| 3755 | |
| 3756 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
| 3757 VM_Exit::block_if_vm_exited(); | |
| 3758 JVMWrapper("JVM_RawMonitorCreate"); | |
| 3759 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
| 3760 } | |
| 3761 | |
| 3762 | |
| 3763 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
| 3764 VM_Exit::block_if_vm_exited(); | |
| 3765 JVMWrapper("JVM_RawMonitorDestroy"); | |
| 3766 delete ((Mutex*) mon); | |
| 3767 } | |
| 3768 | |
| 3769 | |
| 3770 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
| 3771 VM_Exit::block_if_vm_exited(); | |
| 3772 JVMWrapper("JVM_RawMonitorEnter"); | |
| 3773 ((Mutex*) mon)->jvm_raw_lock(); | |
| 3774 return 0; | |
| 3775 } | |
| 3776 | |
| 3777 | |
| 3778 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
| 3779 VM_Exit::block_if_vm_exited(); | |
| 3780 JVMWrapper("JVM_RawMonitorExit"); | |
| 3781 ((Mutex*) mon)->jvm_raw_unlock(); | |
| 3782 } | |
| 3783 | |
| 3784 | |
| 3785 // Support for Serialization | |
| 3786 | |
| 3787 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
| 3788 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
| 3789 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
| 3790 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
| 3791 | |
| 3792 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
| 3793 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
| 3794 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
| 3795 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
| 3796 | |
| 3797 | |
| 3798 void initialize_converter_functions() { | |
| 3799 if (JDK_Version::is_gte_jdk14x_version()) { | |
| 3800 // These functions only exist for compatibility with 1.3.1 and earlier | |
| 3801 return; | |
| 3802 } | |
| 3803 | |
| 3804 // called from universe_post_init() | |
| 3805 assert( | |
| 3806 int_bits_to_float_fn == NULL && | |
| 3807 long_bits_to_double_fn == NULL && | |
| 3808 float_to_int_bits_fn == NULL && | |
| 3809 double_to_long_bits_fn == NULL , | |
| 3810 "initialization done twice" | |
| 3811 ); | |
| 3812 // initialize | |
| 3813 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
| 3814 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
| 3815 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
| 3816 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
| 3817 // verify | |
| 3818 assert( | |
| 3819 int_bits_to_float_fn != NULL && | |
| 3820 long_bits_to_double_fn != NULL && | |
| 3821 float_to_int_bits_fn != NULL && | |
| 3822 double_to_long_bits_fn != NULL , | |
| 3823 "initialization failed" | |
| 3824 ); | |
| 3825 } | |
| 3826 | |
| 3827 | |
| 3828 // Serialization | |
| 3829 JVM_ENTRY(void, JVM_SetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
| 3830 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
| 3831 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
| 3832 | |
| 3833 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
| 3834 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
| 3835 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
| 3836 oop o = JNIHandles::resolve(obj); | |
| 3837 | |
| 3838 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
| 3839 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 3840 } | |
| 3841 | |
| 3842 jsize nfids = fids->length(); | |
| 3843 if (nfids == 0) return; | |
| 3844 | |
| 3845 if (tcodes->length() < nfids) { | |
| 3846 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
| 3847 } | |
| 3848 | |
| 3849 jsize off = 0; | |
| 3850 /* loop through fields, setting values */ | |
| 3851 for (jsize i = 0; i < nfids; i++) { | |
| 3852 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
| 3853 int field_offset; | |
| 3854 if (fid != NULL) { | |
| 3855 // NULL is a legal value for fid, but retrieving the field offset | |
| 3856 // trigger assertion in that case | |
| 3857 field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 3858 } | |
| 3859 | |
| 3860 switch (tcodes->char_at(i)) { | |
| 3861 case 'Z': | |
| 3862 if (fid != NULL) { | |
| 3863 jboolean val = (dbuf->byte_at(off) != 0) ? JNI_TRUE : JNI_FALSE; | |
| 3864 o->bool_field_put(field_offset, val); | |
| 3865 } | |
| 3866 off++; | |
| 3867 break; | |
| 3868 | |
| 3869 case 'B': | |
| 3870 if (fid != NULL) { | |
| 3871 o->byte_field_put(field_offset, dbuf->byte_at(off)); | |
| 3872 } | |
| 3873 off++; | |
| 3874 break; | |
| 3875 | |
| 3876 case 'C': | |
| 3877 if (fid != NULL) { | |
| 3878 jchar val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
| 3879 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
| 3880 o->char_field_put(field_offset, val); | |
| 3881 } | |
| 3882 off += 2; | |
| 3883 break; | |
| 3884 | |
| 3885 case 'S': | |
| 3886 if (fid != NULL) { | |
| 3887 jshort val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
| 3888 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
| 3889 o->short_field_put(field_offset, val); | |
| 3890 } | |
| 3891 off += 2; | |
| 3892 break; | |
| 3893 | |
| 3894 case 'I': | |
| 3895 if (fid != NULL) { | |
| 3896 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
| 3897 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
| 3898 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
| 3899 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
| 3900 o->int_field_put(field_offset, ival); | |
| 3901 } | |
| 3902 off += 4; | |
| 3903 break; | |
| 3904 | |
| 3905 case 'F': | |
| 3906 if (fid != NULL) { | |
| 3907 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
| 3908 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
| 3909 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
| 3910 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
| 3911 jfloat fval = (*int_bits_to_float_fn)(env, NULL, ival); | |
| 3912 o->float_field_put(field_offset, fval); | |
| 3913 } | |
| 3914 off += 4; | |
| 3915 break; | |
| 3916 | |
| 3917 case 'J': | |
| 3918 if (fid != NULL) { | |
| 3919 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
| 3920 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
| 3921 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
| 3922 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
| 3923 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
| 3924 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
| 3925 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
| 3926 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
| 3927 o->long_field_put(field_offset, lval); | |
| 3928 } | |
| 3929 off += 8; | |
| 3930 break; | |
| 3931 | |
| 3932 case 'D': | |
| 3933 if (fid != NULL) { | |
| 3934 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
| 3935 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
| 3936 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
| 3937 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
| 3938 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
| 3939 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
| 3940 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
| 3941 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
| 3942 jdouble dval = (*long_bits_to_double_fn)(env, NULL, lval); | |
| 3943 o->double_field_put(field_offset, dval); | |
| 3944 } | |
| 3945 off += 8; | |
| 3946 break; | |
| 3947 | |
| 3948 default: | |
| 3949 // Illegal typecode | |
| 3950 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
| 3951 } | |
| 3952 } | |
| 3953 JVM_END | |
| 3954 | |
| 3955 | |
| 3956 JVM_ENTRY(void, JVM_GetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
| 3957 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
| 3958 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
| 3959 | |
| 3960 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
| 3961 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
| 3962 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
| 3963 oop o = JNIHandles::resolve(obj); | |
| 3964 | |
| 3965 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
| 3966 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 3967 } | |
| 3968 | |
| 3969 jsize nfids = fids->length(); | |
| 3970 if (nfids == 0) return; | |
| 3971 | |
| 3972 if (tcodes->length() < nfids) { | |
| 3973 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
| 3974 } | |
| 3975 | |
| 3976 /* loop through fields, fetching values */ | |
| 3977 jsize off = 0; | |
| 3978 for (jsize i = 0; i < nfids; i++) { | |
| 3979 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
| 3980 if (fid == NULL) { | |
| 3981 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 3982 } | |
| 3983 int field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 3984 | |
| 3985 switch (tcodes->char_at(i)) { | |
| 3986 case 'Z': | |
| 3987 { | |
| 3988 jboolean val = o->bool_field(field_offset); | |
| 3989 dbuf->byte_at_put(off++, (val != 0) ? 1 : 0); | |
| 3990 } | |
| 3991 break; | |
| 3992 | |
| 3993 case 'B': | |
| 3994 dbuf->byte_at_put(off++, o->byte_field(field_offset)); | |
| 3995 break; | |
| 3996 | |
| 3997 case 'C': | |
| 3998 { | |
| 3999 jchar val = o->char_field(field_offset); | |
| 4000 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 4001 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 4002 } | |
| 4003 break; | |
| 4004 | |
| 4005 case 'S': | |
| 4006 { | |
| 4007 jshort val = o->short_field(field_offset); | |
| 4008 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 4009 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 4010 } | |
| 4011 break; | |
| 4012 | |
| 4013 case 'I': | |
| 4014 { | |
| 4015 jint val = o->int_field(field_offset); | |
| 4016 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
| 4017 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
| 4018 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 4019 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 4020 } | |
| 4021 break; | |
| 4022 | |
| 4023 case 'F': | |
| 4024 { | |
| 4025 jfloat fval = o->float_field(field_offset); | |
| 4026 jint ival = (*float_to_int_bits_fn)(env, NULL, fval); | |
| 4027 dbuf->byte_at_put(off++, (ival >> 24) & 0xFF); | |
| 4028 dbuf->byte_at_put(off++, (ival >> 16) & 0xFF); | |
| 4029 dbuf->byte_at_put(off++, (ival >> 8) & 0xFF); | |
| 4030 dbuf->byte_at_put(off++, (ival >> 0) & 0xFF); | |
| 4031 } | |
| 4032 break; | |
| 4033 | |
| 4034 case 'J': | |
| 4035 { | |
| 4036 jlong val = o->long_field(field_offset); | |
| 4037 dbuf->byte_at_put(off++, (val >> 56) & 0xFF); | |
| 4038 dbuf->byte_at_put(off++, (val >> 48) & 0xFF); | |
| 4039 dbuf->byte_at_put(off++, (val >> 40) & 0xFF); | |
| 4040 dbuf->byte_at_put(off++, (val >> 32) & 0xFF); | |
| 4041 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
| 4042 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
| 4043 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 4044 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 4045 } | |
| 4046 break; | |
| 4047 | |
| 4048 case 'D': | |
| 4049 { | |
| 4050 jdouble dval = o->double_field(field_offset); | |
| 4051 jlong lval = (*double_to_long_bits_fn)(env, NULL, dval); | |
| 4052 dbuf->byte_at_put(off++, (lval >> 56) & 0xFF); | |
| 4053 dbuf->byte_at_put(off++, (lval >> 48) & 0xFF); | |
| 4054 dbuf->byte_at_put(off++, (lval >> 40) & 0xFF); | |
| 4055 dbuf->byte_at_put(off++, (lval >> 32) & 0xFF); | |
| 4056 dbuf->byte_at_put(off++, (lval >> 24) & 0xFF); | |
| 4057 dbuf->byte_at_put(off++, (lval >> 16) & 0xFF); | |
| 4058 dbuf->byte_at_put(off++, (lval >> 8) & 0xFF); | |
| 4059 dbuf->byte_at_put(off++, (lval >> 0) & 0xFF); | |
| 4060 } | |
| 4061 break; | |
| 4062 | |
| 4063 default: | |
| 4064 // Illegal typecode | |
| 4065 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
| 4066 } | |
| 4067 } | |
| 4068 JVM_END | |
| 4069 | |
| 4070 | |
| 4071 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
| 4072 | |
|
2177
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2162
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|
4073 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS) { |
| 0 | 4074 // Security Note: |
| 4075 // The Java level wrapper will perform the necessary security check allowing | |
| 4076 // us to pass the NULL as the initiating class loader. | |
|
6725
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6271
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|
4077 Klass* klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); |
|
878
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875
diff
changeset
|
4078 |
| 0 | 4079 KlassHandle klass_handle(THREAD, klass); |
| 4080 // Check if we should initialize the class | |
| 4081 if (init && klass_handle->oop_is_instance()) { | |
| 4082 klass_handle->initialize(CHECK_NULL); | |
| 4083 } | |
| 4084 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
| 4085 } | |
| 4086 | |
| 4087 | |
| 4088 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
| 4089 | |
| 4090 #ifndef PRODUCT | |
| 4091 | |
| 4092 extern "C" { | |
| 4093 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
| 4094 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
| 4095 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
| 4096 } | |
| 4097 | |
| 4098 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
| 4099 JVMWrapper("JVM_AccessBoolVMFlag"); | |
| 4100 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, INTERNAL); | |
| 4101 JVM_END | |
| 4102 | |
| 4103 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
| 4104 JVMWrapper("JVM_AccessVMIntFlag"); | |
| 4105 intx v; | |
| 4106 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, INTERNAL); | |
| 4107 *value = (jint)v; | |
| 4108 return result; | |
| 4109 JVM_END | |
| 4110 | |
| 4111 | |
| 4112 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
| 4113 JVMWrapper("JVM_VMBreakPoint"); | |
| 4114 oop the_obj = JNIHandles::resolve(obj); | |
| 4115 BREAKPOINT; | |
| 4116 JVM_END | |
| 4117 | |
| 4118 | |
| 4119 #endif | |
| 4120 | |
| 4121 | |
| 4122 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4123 | |
| 4124 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
| 4125 JVMWrapper("JVM_InvokeMethod"); | |
| 4126 Handle method_handle; | |
| 4127 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
| 4128 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
| 4129 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
| 4130 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4131 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
| 4132 jobject res = JNIHandles::make_local(env, result); | |
| 4133 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4134 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
| 4135 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
| 4136 if (java_lang_Class::is_primitive(ret_type)) { | |
| 4137 // Only for primitive type vm allocates memory for java object. | |
| 4138 // See box() method. | |
| 4139 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4140 } | |
| 4141 } | |
| 4142 return res; | |
| 4143 } else { | |
| 4144 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
| 4145 } | |
| 4146 JVM_END | |
| 4147 | |
| 4148 | |
| 4149 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
| 4150 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
| 4151 oop constructor_mirror = JNIHandles::resolve(c); | |
| 4152 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4153 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
| 4154 jobject res = JNIHandles::make_local(env, result); | |
| 4155 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4156 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4157 } | |
| 4158 return res; | |
| 4159 JVM_END | |
| 4160 | |
| 4161 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4162 | |
| 4163 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
| 4164 JVMWrapper("JVM_SupportsCX8"); | |
| 4165 return VM_Version::supports_cx8(); | |
| 4166 JVM_END | |
| 4167 | |
| 4168 | |
| 4169 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
| 4170 JVMWrapper("JVM_CX8Field"); | |
| 4171 jlong res; | |
| 4172 oop o = JNIHandles::resolve(obj); | |
| 4173 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 4174 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
| 4175 | |
| 4176 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
| 4177 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
| 4178 | |
| 4179 return res == oldVal; | |
| 4180 JVM_END | |
| 4181 | |
|
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4182 // DTrace /////////////////////////////////////////////////////////////////// |
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4183 |
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4184 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
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4185 JVMWrapper("JVM_DTraceGetVersion"); |
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4186 return (jint)JVM_TRACING_DTRACE_VERSION; |
|
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4187 JVM_END |
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4188 |
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4189 JVM_ENTRY(jlong,JVM_DTraceActivate( |
|
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4190 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
|
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4191 JVM_DTraceProvider* providers)) |
|
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4192 JVMWrapper("JVM_DTraceActivate"); |
|
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4193 return DTraceJSDT::activate( |
|
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4194 version, module_name, providers_count, providers, CHECK_0); |
|
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4195 JVM_END |
|
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4196 |
|
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4197 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
|
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4198 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
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4199 return DTraceJSDT::is_probe_enabled(method); |
|
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4200 JVM_END |
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4201 |
|
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4202 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
|
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4203 JVMWrapper("JVM_DTraceDispose"); |
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4204 DTraceJSDT::dispose(handle); |
|
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4205 JVM_END |
|
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4206 |
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4207 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
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4208 JVMWrapper("JVM_DTraceIsSupported"); |
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4209 return DTraceJSDT::is_supported(); |
|
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4210 JVM_END |
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4211 |
| 0 | 4212 // Returns an array of all live Thread objects (VM internal JavaThreads, |
| 4213 // jvmti agent threads, and JNI attaching threads are skipped) | |
| 4214 // See CR 6404306 regarding JNI attaching threads | |
| 4215 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
| 4216 ResourceMark rm(THREAD); | |
| 4217 ThreadsListEnumerator tle(THREAD, false, false); | |
| 4218 JvmtiVMObjectAllocEventCollector oam; | |
| 4219 | |
| 4220 int num_threads = tle.num_threads(); | |
| 1142 | 4221 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
| 0 | 4222 objArrayHandle threads_ah(THREAD, r); |
| 4223 | |
| 4224 for (int i = 0; i < num_threads; i++) { | |
| 4225 Handle h = tle.get_threadObj(i); | |
| 4226 threads_ah->obj_at_put(i, h()); | |
| 4227 } | |
| 4228 | |
| 4229 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
| 4230 JVM_END | |
| 4231 | |
| 4232 | |
| 4233 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
| 4234 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
| 4235 // the corresponding entry in the given threads array | |
| 4236 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
| 4237 JVMWrapper("JVM_DumpThreads"); | |
| 4238 JvmtiVMObjectAllocEventCollector oam; | |
| 4239 | |
| 4240 // Check if threads is null | |
| 4241 if (threads == NULL) { | |
| 4242 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4243 } | |
| 4244 | |
| 4245 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
| 4246 objArrayHandle ah(THREAD, a); | |
| 4247 int num_threads = ah->length(); | |
| 4248 // check if threads is non-empty array | |
| 4249 if (num_threads == 0) { | |
| 4250 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
| 4251 } | |
| 4252 | |
| 4253 // check if threads is not an array of objects of Thread class | |
|
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4254 Klass* k = ObjArrayKlass::cast(ah->klass())->element_klass(); |
| 1142 | 4255 if (k != SystemDictionary::Thread_klass()) { |
| 0 | 4256 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
| 4257 } | |
| 4258 | |
| 4259 ResourceMark rm(THREAD); | |
| 4260 | |
| 4261 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
| 4262 for (int i = 0; i < num_threads; i++) { | |
| 4263 oop thread_obj = ah->obj_at(i); | |
| 4264 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
| 4265 thread_handle_array->append(h); | |
| 4266 } | |
| 4267 | |
| 4268 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
| 4269 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
| 4270 | |
| 4271 JVM_END | |
| 4272 | |
| 4273 // JVM monitoring and management support | |
| 4274 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
| 4275 return Management::get_jmm_interface(version); | |
| 4276 JVM_END | |
| 4277 | |
| 4278 // com.sun.tools.attach.VirtualMachine agent properties support | |
| 4279 // | |
| 4280 // Initialize the agent properties with the properties maintained in the VM | |
| 4281 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
| 4282 JVMWrapper("JVM_InitAgentProperties"); | |
| 4283 ResourceMark rm; | |
| 4284 | |
| 4285 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
| 4286 | |
| 4287 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
| 4288 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
| 4289 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
| 4290 return properties; | |
| 4291 JVM_END | |
| 4292 | |
| 4293 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
| 4294 { | |
| 4295 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
| 4296 JvmtiVMObjectAllocEventCollector oam; | |
| 4297 | |
| 4298 if (ofClass == NULL) { | |
| 4299 return NULL; | |
| 4300 } | |
| 4301 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
| 4302 // Special handling for primitive objects | |
| 4303 if (java_lang_Class::is_primitive(mirror())) { | |
| 4304 return NULL; | |
| 4305 } | |
|
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4306 Klass* k = java_lang_Class::as_Klass(mirror()); |
| 6983 | 4307 if (!k->oop_is_instance()) { |
| 0 | 4308 return NULL; |
| 4309 } | |
| 4310 instanceKlassHandle ik_h(THREAD, k); | |
| 4311 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
| 4312 if (encl_method_class_idx == 0) { | |
| 4313 return NULL; | |
| 4314 } | |
| 1142 | 4315 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
| 0 | 4316 objArrayHandle dest(THREAD, dest_o); |
|
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4317 Klass* enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); |
| 6983 | 4318 dest->obj_at_put(0, enc_k->java_mirror()); |
| 0 | 4319 int encl_method_method_idx = ik_h->enclosing_method_method_index(); |
| 4320 if (encl_method_method_idx != 0) { | |
|
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|
4321 Symbol* sym = ik_h->constants()->symbol_at( |
| 0 | 4322 extract_low_short_from_int( |
| 4323 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4324 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4325 dest->obj_at_put(1, str()); | |
|
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4326 sym = ik_h->constants()->symbol_at( |
| 0 | 4327 extract_high_short_from_int( |
| 4328 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4329 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4330 dest->obj_at_put(2, str()); | |
| 4331 } | |
| 4332 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 4333 } | |
| 4334 JVM_END | |
| 4335 | |
| 4336 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
| 4337 jint javaThreadState)) | |
| 4338 { | |
| 4339 // If new thread states are added in future JDK and VM versions, | |
| 4340 // this should check if the JDK version is compatible with thread | |
| 4341 // states supported by the VM. Return NULL if not compatible. | |
| 4342 // | |
| 4343 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4344 // to the Java thread state that the JDK supports. | |
| 4345 // | |
| 4346 | |
| 4347 typeArrayHandle values_h; | |
| 4348 switch (javaThreadState) { | |
| 4349 case JAVA_THREAD_STATE_NEW : { | |
| 4350 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4351 values_h = typeArrayHandle(THREAD, r); | |
| 4352 values_h->int_at_put(0, java_lang_Thread::NEW); | |
| 4353 break; | |
| 4354 } | |
| 4355 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4356 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4357 values_h = typeArrayHandle(THREAD, r); | |
| 4358 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
| 4359 break; | |
| 4360 } | |
| 4361 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4362 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4363 values_h = typeArrayHandle(THREAD, r); | |
| 4364 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
| 4365 break; | |
| 4366 } | |
| 4367 case JAVA_THREAD_STATE_WAITING : { | |
| 4368 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
| 4369 values_h = typeArrayHandle(THREAD, r); | |
| 4370 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
| 4371 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
| 4372 break; | |
| 4373 } | |
| 4374 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4375 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
| 4376 values_h = typeArrayHandle(THREAD, r); | |
| 4377 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
| 4378 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
| 4379 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
| 4380 break; | |
| 4381 } | |
| 4382 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4383 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4384 values_h = typeArrayHandle(THREAD, r); | |
| 4385 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
| 4386 break; | |
| 4387 } | |
| 4388 default: | |
| 4389 // Unknown state - probably incompatible JDK version | |
| 4390 return NULL; | |
| 4391 } | |
| 4392 | |
| 4393 return (jintArray) JNIHandles::make_local(env, values_h()); | |
| 4394 } | |
| 4395 JVM_END | |
| 4396 | |
| 4397 | |
| 4398 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
| 4399 jint javaThreadState, | |
| 4400 jintArray values)) | |
| 4401 { | |
| 4402 // If new thread states are added in future JDK and VM versions, | |
| 4403 // this should check if the JDK version is compatible with thread | |
| 4404 // states supported by the VM. Return NULL if not compatible. | |
| 4405 // | |
| 4406 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4407 // to the Java thread state that the JDK supports. | |
| 4408 // | |
| 4409 | |
| 4410 ResourceMark rm; | |
| 4411 | |
| 4412 // Check if threads is null | |
| 4413 if (values == NULL) { | |
| 4414 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4415 } | |
| 4416 | |
| 4417 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
| 4418 typeArrayHandle values_h(THREAD, v); | |
| 4419 | |
| 4420 objArrayHandle names_h; | |
| 4421 switch (javaThreadState) { | |
| 4422 case JAVA_THREAD_STATE_NEW : { | |
| 4423 assert(values_h->length() == 1 && | |
| 4424 values_h->int_at(0) == java_lang_Thread::NEW, | |
| 4425 "Invalid threadStatus value"); | |
| 4426 | |
| 1142 | 4427 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4428 1, /* only 1 substate */ |
| 4429 CHECK_NULL); | |
| 4430 names_h = objArrayHandle(THREAD, r); | |
| 4431 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
| 4432 names_h->obj_at_put(0, name()); | |
| 4433 break; | |
| 4434 } | |
| 4435 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4436 assert(values_h->length() == 1 && | |
| 4437 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
| 4438 "Invalid threadStatus value"); | |
| 4439 | |
| 1142 | 4440 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4441 1, /* only 1 substate */ |
| 4442 CHECK_NULL); | |
| 4443 names_h = objArrayHandle(THREAD, r); | |
| 4444 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
| 4445 names_h->obj_at_put(0, name()); | |
| 4446 break; | |
| 4447 } | |
| 4448 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4449 assert(values_h->length() == 1 && | |
| 4450 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
| 4451 "Invalid threadStatus value"); | |
| 4452 | |
| 1142 | 4453 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4454 1, /* only 1 substate */ |
| 4455 CHECK_NULL); | |
| 4456 names_h = objArrayHandle(THREAD, r); | |
| 4457 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
| 4458 names_h->obj_at_put(0, name()); | |
| 4459 break; | |
| 4460 } | |
| 4461 case JAVA_THREAD_STATE_WAITING : { | |
| 4462 assert(values_h->length() == 2 && | |
| 4463 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
| 4464 values_h->int_at(1) == java_lang_Thread::PARKED, | |
| 4465 "Invalid threadStatus value"); | |
| 1142 | 4466 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4467 2, /* number of substates */ |
| 4468 CHECK_NULL); | |
| 4469 names_h = objArrayHandle(THREAD, r); | |
| 4470 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
| 4471 CHECK_NULL); | |
| 4472 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
| 4473 CHECK_NULL); | |
| 4474 names_h->obj_at_put(0, name0()); | |
| 4475 names_h->obj_at_put(1, name1()); | |
| 4476 break; | |
| 4477 } | |
| 4478 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4479 assert(values_h->length() == 3 && | |
| 4480 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
| 4481 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
| 4482 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
| 4483 "Invalid threadStatus value"); | |
| 1142 | 4484 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4485 3, /* number of substates */ |
| 4486 CHECK_NULL); | |
| 4487 names_h = objArrayHandle(THREAD, r); | |
| 4488 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
| 4489 CHECK_NULL); | |
| 4490 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
| 4491 CHECK_NULL); | |
| 4492 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
| 4493 CHECK_NULL); | |
| 4494 names_h->obj_at_put(0, name0()); | |
| 4495 names_h->obj_at_put(1, name1()); | |
| 4496 names_h->obj_at_put(2, name2()); | |
| 4497 break; | |
| 4498 } | |
| 4499 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4500 assert(values_h->length() == 1 && | |
| 4501 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
| 4502 "Invalid threadStatus value"); | |
| 1142 | 4503 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4504 1, /* only 1 substate */ |
| 4505 CHECK_NULL); | |
| 4506 names_h = objArrayHandle(THREAD, r); | |
| 4507 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
| 4508 names_h->obj_at_put(0, name()); | |
| 4509 break; | |
| 4510 } | |
| 4511 default: | |
| 4512 // Unknown state - probably incompatible JDK version | |
| 4513 return NULL; | |
| 4514 } | |
| 4515 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
| 4516 } | |
| 4517 JVM_END | |
| 4518 | |
| 4519 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
| 4520 { | |
| 4521 memset(info, 0, sizeof(info_size)); | |
| 4522 | |
| 4523 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
| 4524 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4525 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4526 | |
| 4527 // when we add a new capability in the jvm_version_info struct, we should also | |
| 4528 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
| 4529 // counter defined in runtimeService.cpp. | |
| 4530 info->is_attachable = AttachListener::is_attach_supported(); | |
| 4531 info->is_kernel_jvm = 0; // false; | |
| 4532 } | |
| 4533 JVM_END |