Mercurial > hg > graal-compiler
annotate src/share/vm/prims/jvm.cpp @ 7482:989155e2d07a
Merge with hs25-b15.
| author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
|---|---|
| date | Wed, 16 Jan 2013 01:34:24 +0100 |
| parents | 1baf7f1e3f23 ade95d680b42 |
| children | 3ac7d10a6572 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "classfile/classLoader.hpp" | |
| 27 #include "classfile/javaAssertions.hpp" | |
| 28 #include "classfile/javaClasses.hpp" | |
| 29 #include "classfile/symbolTable.hpp" | |
| 30 #include "classfile/systemDictionary.hpp" | |
| 31 #include "classfile/vmSymbols.hpp" | |
| 32 #include "gc_interface/collectedHeap.inline.hpp" | |
| 33 #include "memory/oopFactory.hpp" | |
| 34 #include "memory/universe.inline.hpp" | |
| 3938 | 35 #include "oops/fieldStreams.hpp" |
| 1972 | 36 #include "oops/instanceKlass.hpp" |
| 37 #include "oops/objArrayKlass.hpp" | |
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38 #include "oops/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"; | |
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375 #elif defined(GRAAL) |
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376 const char* compiler_name = "HotSpot " CSIZE "Graal Compiler"; |
| 0 | 377 #else |
| 378 const char* compiler_name = ""; | |
| 379 #endif // compilers | |
| 380 #endif // TIERED | |
| 381 | |
| 382 if (*compiler_name != '\0' && | |
| 383 (Arguments::mode() != Arguments::_int)) { | |
| 384 PUTPROP(props, "sun.management.compiler", compiler_name); | |
| 385 } | |
| 386 } | |
| 387 | |
| 388 return properties; | |
| 389 JVM_END | |
| 390 | |
| 391 | |
| 392 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// | |
| 393 | |
| 394 extern volatile jint vm_created; | |
| 395 | |
| 396 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
| 397 if (vm_created != 0 && (code == 0)) { | |
| 398 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
| 399 Universe::run_finalizers_on_exit(); | |
| 400 } | |
| 401 before_exit(thread); | |
| 402 vm_exit(code); | |
| 403 JVM_END | |
| 404 | |
| 405 | |
| 406 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
| 407 before_exit(thread); | |
| 408 vm_exit(code); | |
| 409 JVM_END | |
| 410 | |
| 411 | |
| 412 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
| 413 register_on_exit_function(func); | |
| 414 JVM_END | |
| 415 | |
| 416 | |
| 417 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
| 418 JVMWrapper("JVM_GC"); | |
| 419 if (!DisableExplicitGC) { | |
| 420 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
| 421 } | |
| 422 JVM_END | |
| 423 | |
| 424 | |
| 425 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
| 426 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
| 427 return Universe::heap()->millis_since_last_gc(); | |
| 428 JVM_END | |
| 429 | |
| 430 | |
| 431 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
| 432 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
| 433 JVM_END | |
| 434 | |
| 435 | |
| 436 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
| 437 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
| 438 JVM_END | |
| 439 | |
| 440 static inline jlong convert_size_t_to_jlong(size_t val) { | |
| 441 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
| 442 NOT_LP64 (return (jlong)val;) | |
| 443 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
| 444 } | |
| 445 | |
| 446 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
| 447 JVMWrapper("JVM_TotalMemory"); | |
| 448 size_t n = Universe::heap()->capacity(); | |
| 449 return convert_size_t_to_jlong(n); | |
| 450 JVM_END | |
| 451 | |
| 452 | |
| 453 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
| 454 JVMWrapper("JVM_FreeMemory"); | |
| 455 CollectedHeap* ch = Universe::heap(); | |
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456 size_t n; |
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457 { |
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458 MutexLocker x(Heap_lock); |
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459 n = ch->capacity() - ch->used(); |
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460 } |
| 0 | 461 return convert_size_t_to_jlong(n); |
| 462 JVM_END | |
| 463 | |
| 464 | |
| 465 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
| 466 JVMWrapper("JVM_MaxMemory"); | |
| 467 size_t n = Universe::heap()->max_capacity(); | |
| 468 return convert_size_t_to_jlong(n); | |
| 469 JVM_END | |
| 470 | |
| 471 | |
| 472 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
| 473 JVMWrapper("JVM_ActiveProcessorCount"); | |
| 474 return os::active_processor_count(); | |
| 475 JVM_END | |
| 476 | |
| 477 | |
| 478 | |
| 479 // java.lang.Throwable ////////////////////////////////////////////////////// | |
| 480 | |
| 481 | |
| 482 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
| 483 JVMWrapper("JVM_FillInStackTrace"); | |
| 484 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
| 485 java_lang_Throwable::fill_in_stack_trace(exception); | |
| 486 JVM_END | |
| 487 | |
| 488 | |
| 489 JVM_ENTRY(void, JVM_PrintStackTrace(JNIEnv *env, jobject receiver, jobject printable)) | |
| 490 JVMWrapper("JVM_PrintStackTrace"); | |
| 491 // Note: This is no longer used in Merlin, but we still support it for compatibility. | |
| 492 oop exception = JNIHandles::resolve_non_null(receiver); | |
| 493 oop stream = JNIHandles::resolve_non_null(printable); | |
| 494 java_lang_Throwable::print_stack_trace(exception, stream); | |
| 495 JVM_END | |
| 496 | |
| 497 | |
| 498 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
| 499 JVMWrapper("JVM_GetStackTraceDepth"); | |
| 500 oop exception = JNIHandles::resolve(throwable); | |
| 501 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
| 502 JVM_END | |
| 503 | |
| 504 | |
| 505 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
| 506 JVMWrapper("JVM_GetStackTraceElement"); | |
| 507 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
| 508 oop exception = JNIHandles::resolve(throwable); | |
| 509 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
| 510 return JNIHandles::make_local(env, element); | |
| 511 JVM_END | |
| 512 | |
| 513 | |
| 514 // java.lang.Object /////////////////////////////////////////////// | |
| 515 | |
| 516 | |
| 517 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
| 518 JVMWrapper("JVM_IHashCode"); | |
| 519 // as implemented in the classic virtual machine; return 0 if object is NULL | |
| 520 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
| 521 JVM_END | |
| 522 | |
| 523 | |
| 524 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
| 525 JVMWrapper("JVM_MonitorWait"); | |
| 526 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 527 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
| 528 if (JvmtiExport::should_post_monitor_wait()) { | |
| 529 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
| 530 } | |
| 531 ObjectSynchronizer::wait(obj, ms, CHECK); | |
| 532 JVM_END | |
| 533 | |
| 534 | |
| 535 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
| 536 JVMWrapper("JVM_MonitorNotify"); | |
| 537 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 538 ObjectSynchronizer::notify(obj, CHECK); | |
| 539 JVM_END | |
| 540 | |
| 541 | |
| 542 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
| 543 JVMWrapper("JVM_MonitorNotifyAll"); | |
| 544 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 545 ObjectSynchronizer::notifyall(obj, CHECK); | |
| 546 JVM_END | |
| 547 | |
| 548 | |
| 549 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
| 550 JVMWrapper("JVM_Clone"); | |
| 551 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 552 const KlassHandle klass (THREAD, obj->klass()); | |
| 553 JvmtiVMObjectAllocEventCollector oam; | |
| 554 | |
| 555 #ifdef ASSERT | |
| 556 // Just checking that the cloneable flag is set correct | |
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557 if (obj->is_array()) { |
| 0 | 558 guarantee(klass->is_cloneable(), "all arrays are cloneable"); |
| 559 } else { | |
| 560 guarantee(obj->is_instance(), "should be instanceOop"); | |
| 1142 | 561 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
| 0 | 562 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
| 563 } | |
| 564 #endif | |
| 565 | |
| 566 // Check if class of obj supports the Cloneable interface. | |
| 567 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
| 568 if (!klass->is_cloneable()) { | |
| 569 ResourceMark rm(THREAD); | |
| 570 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
| 571 } | |
| 572 | |
| 573 // Make shallow object copy | |
| 574 const int size = obj->size(); | |
| 575 oop new_obj = NULL; | |
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576 if (obj->is_array()) { |
| 0 | 577 const int length = ((arrayOop)obj())->length(); |
| 578 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
| 579 } else { | |
| 580 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
| 581 } | |
| 582 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
| 583 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
| 584 // be suspended in the middle of copying the pointer and end up with parts | |
| 585 // of two different pointers in the field. Subsequent dereferences will crash. | |
| 586 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
| 587 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
| 588 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
| 589 // The same is true of StubRoutines::object_copy and the various oop_copy | |
| 590 // variants, and of the code generated by the inline_native_clone intrinsic. | |
| 591 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
| 592 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
| 593 (size_t)align_object_size(size) / HeapWordsPerLong); | |
| 594 // Clear the header | |
| 595 new_obj->init_mark(); | |
| 596 | |
| 597 // Store check (mark entire object and let gc sort it out) | |
| 598 BarrierSet* bs = Universe::heap()->barrier_set(); | |
| 599 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
| 600 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
| 601 | |
| 602 // Caution: this involves a java upcall, so the clone should be | |
| 603 // "gc-robust" by this stage. | |
| 604 if (klass->has_finalizer()) { | |
| 605 assert(obj->is_instance(), "should be instanceOop"); | |
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606 new_obj = InstanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); |
| 0 | 607 } |
| 608 | |
| 609 return JNIHandles::make_local(env, oop(new_obj)); | |
| 610 JVM_END | |
| 611 | |
| 612 // java.lang.Compiler //////////////////////////////////////////////////// | |
| 613 | |
| 614 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
| 615 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
| 616 // functions are all silently ignored unless JVM warnings are printed. | |
| 617 | |
| 618 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
| 619 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
| 620 JVM_END | |
| 621 | |
| 622 | |
| 623 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
| 624 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
| 625 return JNI_FALSE; | |
| 626 JVM_END | |
| 627 | |
| 628 | |
| 629 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
| 630 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
| 631 return JNI_FALSE; | |
| 632 JVM_END | |
| 633 | |
| 634 | |
| 635 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
| 636 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
| 637 return JNI_FALSE; | |
| 638 JVM_END | |
| 639 | |
| 640 | |
| 641 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
| 642 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
| 643 return NULL; | |
| 644 JVM_END | |
| 645 | |
| 646 | |
| 647 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
| 648 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
| 649 JVM_END | |
| 650 | |
| 651 | |
| 652 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
| 653 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
| 654 JVM_END | |
| 655 | |
| 656 | |
| 657 | |
| 658 // Error message support ////////////////////////////////////////////////////// | |
| 659 | |
| 660 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
| 661 JVMWrapper("JVM_GetLastErrorString"); | |
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662 return (jint)os::lasterror(buf, len); |
| 0 | 663 JVM_END |
| 664 | |
| 665 | |
| 666 // java.io.File /////////////////////////////////////////////////////////////// | |
| 667 | |
| 668 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
| 669 JVMWrapper2("JVM_NativePath (%s)", path); | |
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670 return os::native_path(path); |
| 0 | 671 JVM_END |
| 672 | |
| 673 | |
| 674 // Misc. class handling /////////////////////////////////////////////////////////// | |
| 675 | |
| 676 | |
| 677 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
| 678 JVMWrapper("JVM_GetCallerClass"); | |
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679 Klass* k = thread->security_get_caller_class(depth); |
| 6983 | 680 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, k->java_mirror()); |
| 0 | 681 JVM_END |
| 682 | |
| 683 | |
| 684 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
| 685 JVMWrapper("JVM_FindPrimitiveClass"); | |
| 686 oop mirror = NULL; | |
| 687 BasicType t = name2type(utf); | |
| 688 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
| 689 mirror = Universe::java_mirror(t); | |
| 690 } | |
| 691 if (mirror == NULL) { | |
| 692 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
| 693 } else { | |
| 694 return (jclass) JNIHandles::make_local(env, mirror); | |
| 695 } | |
| 696 JVM_END | |
| 697 | |
| 698 | |
| 699 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
| 700 JVMWrapper("JVM_ResolveClass"); | |
| 701 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
| 702 JVM_END | |
| 703 | |
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704 |
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705 // Returns a class loaded by the bootstrap class loader; or null |
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706 // if not found. ClassNotFoundException is not thrown. |
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707 // |
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708 // Rationale behind JVM_FindClassFromBootLoader |
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709 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
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710 // b> because of (a) java.dll has a direct dependecy on the unexported |
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711 // private symbol "_JVM_FindClassFromClassLoader@20". |
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712 // c> the launcher cannot use the private symbol as it dynamically opens |
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713 // the entry point, so if something changes, the launcher will fail |
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714 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
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715 // stable exported interface. |
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716 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
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717 // signature to change from _JVM_FindClassFromClassLoader@20 to |
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718 // JVM_FindClassFromClassLoader and will not be backward compatible |
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719 // with older JDKs. |
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720 // Thus a public/stable exported entry point is the right solution, |
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721 // public here means public in linker semantics, and is exported only |
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722 // to the JDK, and is not intended to be a public API. |
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723 |
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724 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
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725 const char* name)) |
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726 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
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|
727 |
|
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|
728 // Java libraries should ensure that name is never null... |
|
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729 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
|
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730 // It's impossible to create this class; the name cannot fit |
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731 // into the constant pool. |
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732 return NULL; |
|
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|
733 } |
|
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|
734 |
|
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735 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
|
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736 Klass* k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
|
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737 if (k == NULL) { |
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|
738 return NULL; |
|
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|
739 } |
|
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|
740 |
|
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|
741 if (TraceClassResolution) { |
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742 trace_class_resolution(k); |
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743 } |
| 6983 | 744 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
|
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|
745 JVM_END |
|
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|
746 |
|
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|
747 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
|
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748 jboolean init, jobject loader, |
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749 jboolean throwError)) |
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750 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
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751 throwError ? "error" : "exception"); |
| 388 | 752 // Java libraries should ensure that name is never null... |
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753 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
| 388 | 754 // It's impossible to create this class; the name cannot fit |
| 755 // into the constant pool. | |
| 756 if (throwError) { | |
| 757 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 758 } else { | |
| 759 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
| 760 } | |
| 761 } | |
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762 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
| 388 | 763 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
| 764 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 765 Handle(), throwError, THREAD); | |
| 766 | |
| 767 if (TraceClassResolution && result != NULL) { | |
|
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768 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
| 388 | 769 } |
| 770 return result; | |
| 0 | 771 JVM_END |
| 772 | |
| 773 | |
| 774 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
| 775 jboolean init, jclass from)) | |
| 776 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
|
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777 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
| 0 | 778 // It's impossible to create this class; the name cannot fit |
| 779 // into the constant pool. | |
| 780 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 781 } | |
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782 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
| 0 | 783 oop from_class_oop = JNIHandles::resolve(from); |
|
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784 Klass* from_class = (from_class_oop == NULL) |
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785 ? (Klass*)NULL |
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786 : java_lang_Class::as_Klass(from_class_oop); |
| 0 | 787 oop class_loader = NULL; |
| 788 oop protection_domain = NULL; | |
| 789 if (from_class != NULL) { | |
| 6983 | 790 class_loader = from_class->class_loader(); |
| 791 protection_domain = from_class->protection_domain(); | |
| 0 | 792 } |
| 793 Handle h_loader(THREAD, class_loader); | |
| 794 Handle h_prot (THREAD, protection_domain); | |
| 795 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 796 h_prot, true, thread); | |
| 797 | |
| 798 if (TraceClassResolution && result != NULL) { | |
| 799 // this function is generally only used for class loading during verification. | |
| 800 ResourceMark rm; | |
| 801 oop from_mirror = JNIHandles::resolve_non_null(from); | |
|
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802 Klass* from_class = java_lang_Class::as_Klass(from_mirror); |
| 6983 | 803 const char * from_name = from_class->external_name(); |
| 0 | 804 |
| 805 oop mirror = JNIHandles::resolve_non_null(result); | |
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806 Klass* to_class = java_lang_Class::as_Klass(mirror); |
| 6983 | 807 const char * to = to_class->external_name(); |
| 0 | 808 tty->print("RESOLVE %s %s (verification)\n", from_name, to); |
| 809 } | |
| 810 | |
| 811 return result; | |
| 812 JVM_END | |
| 813 | |
| 814 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
| 815 if (loader.is_null()) { | |
| 816 return; | |
| 817 } | |
| 818 | |
| 819 // check whether the current caller thread holds the lock or not. | |
| 820 // If not, increment the corresponding counter | |
| 821 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
| 822 ObjectSynchronizer::owner_self) { | |
| 823 counter->inc(); | |
| 824 } | |
| 825 } | |
| 826 | |
| 827 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
|
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828 // and JVM_DefineClassWithSourceCond() |
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829 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
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830 jobject loader, const jbyte *buf, |
|
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831 jsize len, jobject pd, const char *source, |
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832 jboolean verify, TRAPS) { |
|
431
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|
833 if (source == NULL) source = "__JVM_DefineClass__"; |
| 0 | 834 |
|
875
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|
835 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
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|
836 JavaThread* jt = (JavaThread*) THREAD; |
|
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|
837 |
|
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|
838 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
|
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|
839 ClassLoader::perf_define_appclass_selftime(), |
|
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|
840 ClassLoader::perf_define_appclasses(), |
|
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841 jt->get_thread_stat()->perf_recursion_counts_addr(), |
|
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|
842 jt->get_thread_stat()->perf_timers_addr(), |
|
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|
843 PerfClassTraceTime::DEFINE_CLASS); |
|
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|
844 |
|
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|
845 if (UsePerfData) { |
|
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|
846 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
|
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|
847 } |
|
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|
848 |
| 0 | 849 // Since exceptions can be thrown, class initialization can take place |
| 850 // if name is NULL no check for class name in .class stream has to be made. | |
|
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851 TempNewSymbol class_name = NULL; |
| 0 | 852 if (name != NULL) { |
| 853 const int str_len = (int)strlen(name); | |
|
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854 if (str_len > Symbol::max_length()) { |
| 0 | 855 // It's impossible to create this class; the name cannot fit |
| 856 // into the constant pool. | |
| 857 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 858 } | |
|
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|
859 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
| 0 | 860 } |
| 861 | |
| 862 ResourceMark rm(THREAD); | |
| 863 ClassFileStream st((u1*) buf, len, (char *)source); | |
| 864 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
| 865 if (UsePerfData) { | |
| 866 is_lock_held_by_thread(class_loader, | |
| 867 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
| 868 THREAD); | |
| 869 } | |
| 870 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
|
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871 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, |
| 0 | 872 protection_domain, &st, |
|
973
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|
873 verify != 0, |
| 0 | 874 CHECK_NULL); |
| 875 | |
| 876 if (TraceClassResolution && k != NULL) { | |
| 877 trace_class_resolution(k); | |
| 878 } | |
| 879 | |
| 6983 | 880 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
| 0 | 881 } |
| 882 | |
| 883 | |
| 884 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
| 885 JVMWrapper2("JVM_DefineClass %s", name); | |
| 886 | |
|
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|
887 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
| 0 | 888 JVM_END |
| 889 | |
| 890 | |
| 891 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
| 892 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
| 893 | |
|
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894 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
|
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|
895 JVM_END |
|
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|
896 |
|
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897 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
|
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898 jobject loader, const jbyte *buf, |
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899 jsize len, jobject pd, |
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|
900 const char *source, jboolean verify)) |
|
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901 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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|
902 |
|
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|
903 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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|
904 JVM_END |
| 0 | 905 |
| 906 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
| 907 JVMWrapper("JVM_FindLoadedClass"); | |
| 908 ResourceMark rm(THREAD); | |
| 909 | |
| 910 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 911 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
| 912 | |
| 913 const char* str = java_lang_String::as_utf8_string(string()); | |
| 914 // Sanity check, don't expect null | |
| 915 if (str == NULL) return NULL; | |
| 916 | |
| 917 const int str_len = (int)strlen(str); | |
|
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918 if (str_len > Symbol::max_length()) { |
| 0 | 919 // It's impossible to create this class; the name cannot fit |
| 920 // into the constant pool. | |
| 921 return NULL; | |
| 922 } | |
|
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923 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
| 0 | 924 |
| 925 // Security Note: | |
| 926 // The Java level wrapper will perform the necessary security check allowing | |
| 927 // us to pass the NULL as the initiating class loader. | |
| 928 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
| 929 if (UsePerfData) { | |
| 930 is_lock_held_by_thread(h_loader, | |
| 931 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
| 932 THREAD); | |
| 933 } | |
| 934 | |
|
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935 Klass* k = SystemDictionary::find_instance_or_array_klass(klass_name, |
| 0 | 936 h_loader, |
| 937 Handle(), | |
| 938 CHECK_NULL); | |
| 939 | |
| 940 return (k == NULL) ? NULL : | |
| 6983 | 941 (jclass) JNIHandles::make_local(env, k->java_mirror()); |
| 0 | 942 JVM_END |
| 943 | |
| 944 | |
| 945 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
| 946 | |
| 947 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
| 948 assert (cls != NULL, "illegal class"); | |
| 949 JVMWrapper("JVM_GetClassName"); | |
| 950 JvmtiVMObjectAllocEventCollector oam; | |
| 951 ResourceMark rm(THREAD); | |
| 952 const char* name; | |
| 953 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 954 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
| 955 } else { | |
| 956 // Consider caching interned string in Klass | |
|
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957 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 0 | 958 assert(k->is_klass(), "just checking"); |
| 6983 | 959 name = k->external_name(); |
| 0 | 960 } |
| 961 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
| 962 return (jstring) JNIHandles::make_local(env, result); | |
| 963 JVM_END | |
| 964 | |
| 965 | |
| 966 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
| 967 JVMWrapper("JVM_GetClassInterfaces"); | |
| 968 JvmtiVMObjectAllocEventCollector oam; | |
| 969 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 970 | |
| 971 // Special handling for primitive objects | |
| 972 if (java_lang_Class::is_primitive(mirror)) { | |
| 973 // Primitive objects does not have any interfaces | |
| 1142 | 974 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 975 return (jobjectArray) JNIHandles::make_local(env, r); |
| 976 } | |
| 977 | |
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978 KlassHandle klass(thread, java_lang_Class::as_Klass(mirror)); |
| 0 | 979 // Figure size of result array |
| 980 int size; | |
| 981 if (klass->oop_is_instance()) { | |
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982 size = InstanceKlass::cast(klass())->local_interfaces()->length(); |
| 0 | 983 } else { |
| 984 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
| 985 size = 2; | |
| 986 } | |
| 987 | |
| 988 // Allocate result array | |
| 1142 | 989 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
| 0 | 990 objArrayHandle result (THREAD, r); |
| 991 // Fill in result | |
| 992 if (klass->oop_is_instance()) { | |
| 993 // Regular instance klass, fill in all local interfaces | |
| 994 for (int index = 0; index < size; index++) { | |
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995 Klass* k = InstanceKlass::cast(klass())->local_interfaces()->at(index); |
| 6983 | 996 result->obj_at_put(index, k->java_mirror()); |
| 0 | 997 } |
| 998 } else { | |
| 999 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
| 6983 | 1000 result->obj_at_put(0, SystemDictionary::Cloneable_klass()->java_mirror()); |
| 1001 result->obj_at_put(1, SystemDictionary::Serializable_klass()->java_mirror()); | |
| 0 | 1002 } |
| 1003 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1004 JVM_END | |
| 1005 | |
| 1006 | |
| 1007 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
| 1008 JVMWrapper("JVM_GetClassLoader"); | |
| 1009 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1010 return NULL; | |
| 1011 } | |
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1012 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1013 oop loader = k->class_loader(); |
| 0 | 1014 return JNIHandles::make_local(env, loader); |
| 1015 JVM_END | |
| 1016 | |
| 1017 | |
| 1018 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
| 1019 JVMWrapper("JVM_IsInterface"); | |
| 1020 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1021 if (java_lang_Class::is_primitive(mirror)) { | |
| 1022 return JNI_FALSE; | |
| 1023 } | |
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1024 Klass* k = java_lang_Class::as_Klass(mirror); |
| 6983 | 1025 jboolean result = k->is_interface(); |
| 1026 assert(!result || k->oop_is_instance(), | |
| 0 | 1027 "all interfaces are instance types"); |
| 1028 // The compiler intrinsic for isInterface tests the | |
| 1029 // Klass::_access_flags bits in the same way. | |
| 1030 return result; | |
| 1031 JVM_END | |
| 1032 | |
| 1033 | |
| 1034 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
| 1035 JVMWrapper("JVM_GetClassSigners"); | |
| 1036 JvmtiVMObjectAllocEventCollector oam; | |
| 1037 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1038 // There are no signers for primitive types | |
| 1039 return NULL; | |
| 1040 } | |
| 1041 | |
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1042 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 1043 objArrayOop signers = NULL; |
| 6983 | 1044 if (k->oop_is_instance()) { |
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1045 signers = InstanceKlass::cast(k)->signers(); |
| 0 | 1046 } |
| 1047 | |
| 1048 // If there are no signers set in the class, or if the class | |
| 1049 // is an array, return NULL. | |
| 1050 if (signers == NULL) return NULL; | |
| 1051 | |
| 1052 // copy of the signers array | |
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1053 Klass* element = ObjArrayKlass::cast(signers->klass())->element_klass(); |
| 0 | 1054 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); |
| 1055 for (int index = 0; index < signers->length(); index++) { | |
| 1056 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
| 1057 } | |
| 1058 | |
| 1059 // return the copy | |
| 1060 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
| 1061 JVM_END | |
| 1062 | |
| 1063 | |
| 1064 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
| 1065 JVMWrapper("JVM_SetClassSigners"); | |
| 1066 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1067 // This call is ignored for primitive types and arrays. | |
| 1068 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
| 1069 // be called with an array. Only the bootstrap loader creates arrays. | |
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1070 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1071 if (k->oop_is_instance()) { |
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1072 InstanceKlass::cast(k)->set_signers(objArrayOop(JNIHandles::resolve(signers))); |
| 0 | 1073 } |
| 1074 } | |
| 1075 JVM_END | |
| 1076 | |
| 1077 | |
| 1078 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
| 1079 JVMWrapper("JVM_GetProtectionDomain"); | |
| 1080 if (JNIHandles::resolve(cls) == NULL) { | |
| 1081 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
| 1082 } | |
| 1083 | |
| 1084 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1085 // Primitive types does not have a protection domain. | |
| 1086 return NULL; | |
| 1087 } | |
| 1088 | |
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1089 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 6983 | 1090 return (jobject) JNIHandles::make_local(env, k->protection_domain()); |
| 0 | 1091 JVM_END |
| 1092 | |
| 1093 | |
| 1094 // Obsolete since 1.2 (Class.setProtectionDomain removed), although | |
| 1095 // still defined in core libraries as of 1.5. | |
| 1096 JVM_ENTRY(void, JVM_SetProtectionDomain(JNIEnv *env, jclass cls, jobject protection_domain)) | |
| 1097 JVMWrapper("JVM_SetProtectionDomain"); | |
| 1098 if (JNIHandles::resolve(cls) == NULL) { | |
| 1099 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 1100 } | |
| 1101 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1102 // Call is ignored for primitive types | |
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1103 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 0 | 1104 |
| 1105 // cls won't be an array, as this called only from ClassLoader.defineClass | |
| 6983 | 1106 if (k->oop_is_instance()) { |
| 0 | 1107 oop pd = JNIHandles::resolve(protection_domain); |
| 1108 assert(pd == NULL || pd->is_oop(), "just checking"); | |
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1109 InstanceKlass::cast(k)->set_protection_domain(pd); |
| 0 | 1110 } |
| 1111 } | |
| 1112 JVM_END | |
| 1113 | |
| 1114 | |
| 1115 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
| 1116 JVMWrapper("JVM_DoPrivileged"); | |
| 1117 | |
| 1118 if (action == NULL) { | |
| 1119 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
| 1120 } | |
| 1121 | |
| 1122 // Stack allocated list of privileged stack elements | |
| 1123 PrivilegedElement pi; | |
| 1124 | |
| 1125 // Check that action object understands "Object run()" | |
| 1126 Handle object (THREAD, JNIHandles::resolve(action)); | |
| 1127 | |
| 1128 // get run() method | |
| 6983 | 1129 Method* m_oop = object->klass()->uncached_lookup_method( |
| 0 | 1130 vmSymbols::run_method_name(), |
| 1131 vmSymbols::void_object_signature()); | |
| 1132 methodHandle m (THREAD, m_oop); | |
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1133 if (m.is_null() || !m->is_method() || !m()->is_public() || m()->is_static()) { |
| 0 | 1134 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); |
| 1135 } | |
| 1136 | |
| 1137 // Compute the frame initiating the do privileged operation and setup the privileged stack | |
| 1138 vframeStream vfst(thread); | |
| 1139 vfst.security_get_caller_frame(1); | |
| 1140 | |
| 1141 if (!vfst.at_end()) { | |
| 1142 pi.initialize(&vfst, JNIHandles::resolve(context), thread->privileged_stack_top(), CHECK_NULL); | |
| 1143 thread->set_privileged_stack_top(&pi); | |
| 1144 } | |
| 1145 | |
| 1146 | |
| 1147 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
| 1148 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
| 1149 Handle pending_exception; | |
| 1150 JavaValue result(T_OBJECT); | |
| 1151 JavaCallArguments args(object); | |
| 1152 JavaCalls::call(&result, m, &args, THREAD); | |
| 1153 | |
| 1154 // done with action, remove ourselves from the list | |
| 1155 if (!vfst.at_end()) { | |
| 1156 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
| 1157 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
| 1158 } | |
| 1159 | |
| 1160 if (HAS_PENDING_EXCEPTION) { | |
| 1161 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
| 1162 CLEAR_PENDING_EXCEPTION; | |
| 1163 | |
| 1142 | 1164 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
| 1165 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
| 0 | 1166 // Throw a java.security.PrivilegedActionException(Exception e) exception |
| 1167 JavaCallArguments args(pending_exception); | |
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1168 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1169 vmSymbols::exception_void_signature(), |
| 0 | 1170 &args); |
| 1171 } | |
| 1172 } | |
| 1173 | |
| 1174 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
| 1175 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
| 1176 JVM_END | |
| 1177 | |
| 1178 | |
| 1179 // Returns the inherited_access_control_context field of the running thread. | |
| 1180 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1181 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
| 1182 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
| 1183 return JNIHandles::make_local(env, result); | |
| 1184 JVM_END | |
| 1185 | |
| 1186 class RegisterArrayForGC { | |
| 1187 private: | |
| 1188 JavaThread *_thread; | |
| 1189 public: | |
| 1190 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
| 1191 _thread = thread; | |
| 1192 _thread->register_array_for_gc(array); | |
| 1193 } | |
| 1194 | |
| 1195 ~RegisterArrayForGC() { | |
| 1196 _thread->register_array_for_gc(NULL); | |
| 1197 } | |
| 1198 }; | |
| 1199 | |
| 1200 | |
| 1201 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1202 JVMWrapper("JVM_GetStackAccessControlContext"); | |
| 1203 if (!UsePrivilegedStack) return NULL; | |
| 1204 | |
| 1205 ResourceMark rm(THREAD); | |
| 1206 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
| 1207 JvmtiVMObjectAllocEventCollector oam; | |
| 1208 | |
| 1209 // count the protection domains on the execution stack. We collapse | |
| 1210 // duplicate consecutive protection domains into a single one, as | |
| 1211 // well as stopping when we hit a privileged frame. | |
| 1212 | |
| 1213 // Use vframeStream to iterate through Java frames | |
| 1214 vframeStream vfst(thread); | |
| 1215 | |
| 1216 oop previous_protection_domain = NULL; | |
| 1217 Handle privileged_context(thread, NULL); | |
| 1218 bool is_privileged = false; | |
| 1219 oop protection_domain = NULL; | |
| 1220 | |
| 1221 for(; !vfst.at_end(); vfst.next()) { | |
| 1222 // get method of frame | |
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1223 Method* method = vfst.method(); |
| 0 | 1224 intptr_t* frame_id = vfst.frame_id(); |
| 1225 | |
| 1226 // check the privileged frames to see if we have a match | |
| 1227 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
| 1228 // this frame is privileged | |
| 1229 is_privileged = true; | |
| 1230 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
| 1231 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
| 1232 } else { | |
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1233 protection_domain = method->method_holder()->protection_domain(); |
| 0 | 1234 } |
| 1235 | |
| 1236 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
| 1237 local_array->push(protection_domain); | |
| 1238 previous_protection_domain = protection_domain; | |
| 1239 } | |
| 1240 | |
| 1241 if (is_privileged) break; | |
| 1242 } | |
| 1243 | |
| 1244 | |
| 1245 // either all the domains on the stack were system domains, or | |
| 1246 // we had a privileged system domain | |
| 1247 if (local_array->is_empty()) { | |
| 1248 if (is_privileged && privileged_context.is_null()) return NULL; | |
| 1249 | |
| 1250 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
| 1251 return JNIHandles::make_local(env, result); | |
| 1252 } | |
| 1253 | |
| 1254 // the resource area must be registered in case of a gc | |
| 1255 RegisterArrayForGC ragc(thread, local_array); | |
| 1142 | 1256 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
| 0 | 1257 local_array->length(), CHECK_NULL); |
| 1258 objArrayHandle h_context(thread, context); | |
| 1259 for (int index = 0; index < local_array->length(); index++) { | |
| 1260 h_context->obj_at_put(index, local_array->at(index)); | |
| 1261 } | |
| 1262 | |
| 1263 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
| 1264 | |
| 1265 return JNIHandles::make_local(env, result); | |
| 1266 JVM_END | |
| 1267 | |
| 1268 | |
| 1269 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
| 1270 JVMWrapper("JVM_IsArrayClass"); | |
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1271 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1272 return (k != NULL) && k->oop_is_array() ? true : false; |
| 0 | 1273 JVM_END |
| 1274 | |
| 1275 | |
| 1276 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
| 1277 JVMWrapper("JVM_IsPrimitiveClass"); | |
| 1278 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1279 return (jboolean) java_lang_Class::is_primitive(mirror); | |
| 1280 JVM_END | |
| 1281 | |
| 1282 | |
| 1283 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
| 1284 JVMWrapper("JVM_GetComponentType"); | |
| 1285 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1286 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
| 1287 return (jclass) JNIHandles::make_local(env, result); | |
| 1288 JVM_END | |
| 1289 | |
| 1290 | |
| 1291 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
| 1292 JVMWrapper("JVM_GetClassModifiers"); | |
| 1293 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1294 // Primitive type | |
| 1295 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 1296 } | |
| 1297 | |
| 6983 | 1298 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 1299 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); |
| 1300 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
| 1301 return k->modifier_flags(); | |
| 1302 JVM_END | |
| 1303 | |
| 1304 | |
| 1305 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
| 1306 | |
| 1307 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
| 1308 JvmtiVMObjectAllocEventCollector oam; | |
| 1309 // ofClass is a reference to a java_lang_Class object. The mirror object | |
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1310 // of an InstanceKlass |
| 0 | 1311 |
| 1312 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1313 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
| 1142 | 1314 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1315 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1316 } | |
| 1317 | |
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1318 instanceKlassHandle k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
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1319 InnerClassesIterator iter(k); |
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1320 |
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1321 if (iter.length() == 0) { |
| 0 | 1322 // Neither an inner nor outer class |
| 1142 | 1323 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1324 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1325 } | |
| 1326 | |
| 1327 // find inner class info | |
| 1328 constantPoolHandle cp(thread, k->constants()); | |
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1329 int length = iter.length(); |
| 0 | 1330 |
| 1331 // Allocate temp. result array | |
| 1142 | 1332 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
| 0 | 1333 objArrayHandle result (THREAD, r); |
| 1334 int members = 0; | |
| 1335 | |
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1336 for (; !iter.done(); iter.next()) { |
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1337 int ioff = iter.inner_class_info_index(); |
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1338 int ooff = iter.outer_class_info_index(); |
| 0 | 1339 |
| 1340 if (ioff != 0 && ooff != 0) { | |
| 1341 // Check to see if the name matches the class we're looking for | |
| 1342 // before attempting to find the class. | |
| 1343 if (cp->klass_name_at_matches(k, ooff)) { | |
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1344 Klass* outer_klass = cp->klass_at(ooff, CHECK_NULL); |
| 0 | 1345 if (outer_klass == k()) { |
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1346 Klass* ik = cp->klass_at(ioff, CHECK_NULL); |
| 0 | 1347 instanceKlassHandle inner_klass (THREAD, ik); |
| 1348 | |
| 1349 // Throws an exception if outer klass has not declared k as | |
| 1350 // an inner klass | |
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1351 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
| 0 | 1352 |
| 1353 result->obj_at_put(members, inner_klass->java_mirror()); | |
| 1354 members++; | |
| 1355 } | |
| 1356 } | |
| 1357 } | |
| 1358 } | |
| 1359 | |
| 1360 if (members != length) { | |
| 1361 // Return array of right length | |
| 1142 | 1362 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
| 0 | 1363 for(int i = 0; i < members; i++) { |
| 1364 res->obj_at_put(i, result->obj_at(i)); | |
| 1365 } | |
| 1366 return (jobjectArray)JNIHandles::make_local(env, res); | |
| 1367 } | |
| 1368 | |
| 1369 return (jobjectArray)JNIHandles::make_local(env, result()); | |
| 1370 JVM_END | |
| 1371 | |
| 1372 | |
| 1373 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
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1374 { |
| 0 | 1375 // ofClass is a reference to a java_lang_Class object. |
| 1376 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1377 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
| 0 | 1378 return NULL; |
| 1379 } | |
| 1380 | |
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1381 bool inner_is_member = false; |
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1382 Klass* outer_klass |
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1383 = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)) |
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1384 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
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1385 if (outer_klass == NULL) return NULL; // already a top-level class |
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1386 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
| 6983 | 1387 return (jclass) JNIHandles::make_local(env, outer_klass->java_mirror()); |
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1388 } |
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1389 JVM_END |
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1390 |
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1391 // should be in InstanceKlass.cpp, but is here for historical reasons |
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1392 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
|
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1393 bool* inner_is_member, |
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1394 TRAPS) { |
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1395 Thread* thread = THREAD; |
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1396 InnerClassesIterator iter(k); |
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1397 if (iter.length() == 0) { |
| 0 | 1398 // No inner class info => no declaring class |
| 1399 return NULL; | |
| 1400 } | |
| 1401 | |
| 1402 constantPoolHandle i_cp(thread, k->constants()); | |
| 1403 | |
| 1404 bool found = false; | |
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1405 Klass* ok; |
| 0 | 1406 instanceKlassHandle outer_klass; |
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1407 *inner_is_member = false; |
| 0 | 1408 |
| 1409 // Find inner_klass attribute | |
|
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1410 for (; !iter.done() && !found; iter.next()) { |
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1411 int ioff = iter.inner_class_info_index(); |
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1412 int ooff = iter.outer_class_info_index(); |
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1413 int noff = iter.inner_name_index(); |
|
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1414 if (ioff != 0) { |
| 0 | 1415 // Check to see if the name matches the class we're looking for |
| 1416 // before attempting to find the class. | |
| 1417 if (i_cp->klass_name_at_matches(k, ioff)) { | |
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1418 Klass* inner_klass = i_cp->klass_at(ioff, CHECK_NULL); |
|
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1419 found = (k() == inner_klass); |
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1420 if (found && ooff != 0) { |
| 0 | 1421 ok = i_cp->klass_at(ooff, CHECK_NULL); |
| 1422 outer_klass = instanceKlassHandle(thread, ok); | |
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1423 *inner_is_member = true; |
| 0 | 1424 } |
| 1425 } | |
| 1426 } | |
| 1427 } | |
| 1428 | |
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1429 if (found && outer_klass.is_null()) { |
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1430 // It may be anonymous; try for that. |
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1431 int encl_method_class_idx = k->enclosing_method_class_index(); |
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1432 if (encl_method_class_idx != 0) { |
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1433 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
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1434 outer_klass = instanceKlassHandle(thread, ok); |
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1435 *inner_is_member = false; |
|
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1436 } |
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1437 } |
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1438 |
| 0 | 1439 // If no inner class attribute found for this class. |
|
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1440 if (outer_klass.is_null()) return NULL; |
| 0 | 1441 |
| 1442 // Throws an exception if outer klass has not declared k as an inner klass | |
|
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1443 // We need evidence that each klass knows about the other, or else |
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1444 // the system could allow a spoof of an inner class to gain access rights. |
|
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1445 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
|
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1446 return outer_klass(); |
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1447 } |
| 0 | 1448 |
| 1449 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
| 1450 assert (cls != NULL, "illegal class"); | |
| 1451 JVMWrapper("JVM_GetClassSignature"); | |
| 1452 JvmtiVMObjectAllocEventCollector oam; | |
| 1453 ResourceMark rm(THREAD); | |
| 1454 // Return null for arrays and primatives | |
| 1455 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1456 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 6983 | 1457 if (k->oop_is_instance()) { |
|
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1458 Symbol* sym = InstanceKlass::cast(k)->generic_signature(); |
|
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1459 if (sym == NULL) return NULL; |
| 0 | 1460 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 1461 return (jstring) JNIHandles::make_local(env, str()); | |
| 1462 } | |
| 1463 } | |
| 1464 return NULL; | |
| 1465 JVM_END | |
| 1466 | |
| 1467 | |
| 1468 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
| 1469 assert (cls != NULL, "illegal class"); | |
| 1470 JVMWrapper("JVM_GetClassAnnotations"); | |
| 1471 ResourceMark rm(THREAD); | |
| 1472 // Return null for arrays and primitives | |
| 1473 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1474 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 6983 | 1475 if (k->oop_is_instance()) { |
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1476 typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->class_annotations(), CHECK_NULL); |
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1477 return (jbyteArray) JNIHandles::make_local(env, a); |
| 0 | 1478 } |
| 1479 } | |
| 1480 return NULL; | |
| 1481 JVM_END | |
| 1482 | |
| 1483 | |
| 1484 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) | |
| 1485 assert(field != NULL, "illegal field"); | |
| 1486 JVMWrapper("JVM_GetFieldAnnotations"); | |
| 1487 | |
| 1488 // some of this code was adapted from from jni_FromReflectedField | |
| 1489 | |
| 1490 // field is a handle to a java.lang.reflect.Field object | |
| 1491 oop reflected = JNIHandles::resolve_non_null(field); | |
| 1492 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
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1493 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 1494 int slot = java_lang_reflect_Field::slot(reflected); |
| 1495 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
| 1496 | |
| 1497 fieldDescriptor fd; | |
| 1498 KlassHandle kh(THREAD, k); | |
|
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1499 intptr_t offset = InstanceKlass::cast(kh())->field_offset(slot); |
| 0 | 1500 |
| 1501 if (modifiers & JVM_ACC_STATIC) { | |
| 1502 // for static fields we only look in the current class | |
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1503 if (!InstanceKlass::cast(kh())->find_local_field_from_offset(offset, true, &fd)) { |
| 0 | 1504 assert(false, "cannot find static field"); |
| 1505 return NULL; // robustness | |
| 1506 } | |
| 1507 } else { | |
| 1508 // for instance fields we start with the current class and work | |
| 1509 // our way up through the superclass chain | |
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1510 if (!InstanceKlass::cast(kh())->find_field_from_offset(offset, false, &fd)) { |
| 0 | 1511 assert(false, "cannot find instance field"); |
| 1512 return NULL; // robustness | |
| 1513 } | |
| 1514 } | |
| 1515 | |
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1516 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.annotations(), THREAD)); |
| 0 | 1517 JVM_END |
| 1518 | |
| 1519 | |
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1520 static Method* jvm_get_method_common(jobject method) { |
| 0 | 1521 // some of this code was adapted from from jni_FromReflectedMethod |
| 1522 | |
| 1523 oop reflected = JNIHandles::resolve_non_null(method); | |
| 1524 oop mirror = NULL; | |
| 1525 int slot = 0; | |
| 1526 | |
| 1142 | 1527 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
| 0 | 1528 mirror = java_lang_reflect_Constructor::clazz(reflected); |
| 1529 slot = java_lang_reflect_Constructor::slot(reflected); | |
| 1530 } else { | |
| 1142 | 1531 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
| 0 | 1532 "wrong type"); |
| 1533 mirror = java_lang_reflect_Method::clazz(reflected); | |
| 1534 slot = java_lang_reflect_Method::slot(reflected); | |
| 1535 } | |
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1536 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 1537 |
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1538 Method* m = InstanceKlass::cast(k)->method_with_idnum(slot); |
| 0 | 1539 if (m == NULL) { |
| 1540 assert(false, "cannot find method"); | |
| 1541 return NULL; // robustness | |
| 1542 } | |
| 1543 | |
| 1544 return m; | |
| 1545 } | |
| 1546 | |
| 1547 | |
| 1548 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
| 1549 JVMWrapper("JVM_GetMethodAnnotations"); | |
| 1550 | |
| 1551 // method is a handle to a java.lang.reflect.Method object | |
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1552 Method* m = jvm_get_method_common(method); |
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1553 return (jbyteArray) JNIHandles::make_local(env, |
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1554 Annotations::make_java_array(m->annotations(), THREAD)); |
| 0 | 1555 JVM_END |
| 1556 | |
| 1557 | |
| 1558 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
| 1559 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
| 1560 | |
| 1561 // method is a handle to a java.lang.reflect.Method object | |
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1562 Method* m = jvm_get_method_common(method); |
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1563 return (jbyteArray) JNIHandles::make_local(env, |
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1564 Annotations::make_java_array(m->annotation_default(), THREAD)); |
| 0 | 1565 JVM_END |
| 1566 | |
| 1567 | |
| 1568 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
| 1569 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
| 1570 | |
| 1571 // method is a handle to a java.lang.reflect.Method object | |
|
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1572 Method* m = jvm_get_method_common(method); |
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1573 return (jbyteArray) JNIHandles::make_local(env, |
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1574 Annotations::make_java_array(m->parameter_annotations(), THREAD)); |
| 0 | 1575 JVM_END |
| 1576 | |
|
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1577 /* Type use annotations support (JDK 1.8) */ |
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1578 |
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1579 JVM_ENTRY(jbyteArray, JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls)) |
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1580 assert (cls != NULL, "illegal class"); |
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1581 JVMWrapper("JVM_GetClassTypeAnnotations"); |
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1582 ResourceMark rm(THREAD); |
|
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1583 // Return null for arrays and primitives |
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1584 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
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1585 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
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1586 if (k->oop_is_instance()) { |
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1587 typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->type_annotations()->class_annotations(), CHECK_NULL); |
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1588 return (jbyteArray) JNIHandles::make_local(env, a); |
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1589 } |
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1590 } |
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1591 return NULL; |
|
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1592 JVM_END |
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1593 |
|
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1594 JVM_ENTRY(jobjectArray, JVM_GetMethodParameters(JNIEnv *env, jobject method)) |
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1595 { |
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1596 JVMWrapper("JVM_GetMethodParameters"); |
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1597 // method is a handle to a java.lang.reflect.Method object |
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1598 Method* method_ptr = jvm_get_method_common(method); |
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1599 methodHandle mh (THREAD, method_ptr); |
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1600 Handle reflected_method (THREAD, JNIHandles::resolve_non_null(method)); |
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1601 const int num_params = mh->method_parameters_length(); |
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1602 |
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1603 if(0 != num_params) { |
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1604 objArrayOop result_oop = oopFactory::new_objArray(SystemDictionary::reflect_Parameter_klass(), num_params, CHECK_NULL); |
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1605 objArrayHandle result (THREAD, result_oop); |
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1606 |
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1607 for(int i = 0; i < num_params; i++) { |
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1608 MethodParametersElement* params = mh->method_parameters_start(); |
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1609 Symbol* const sym = mh->constants()->symbol_at(params[i].name_cp_index); |
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1610 oop param = Reflection::new_parameter(reflected_method, i, sym, |
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1611 params[i].flags, CHECK_NULL); |
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1612 result->obj_at_put(i, param); |
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1613 } |
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1614 return (jobjectArray)JNIHandles::make_local(env, result()); |
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1615 } else { |
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1616 return (jobjectArray)NULL; |
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1617 } |
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1618 } |
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1619 JVM_END |
| 0 | 1620 |
| 1621 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
| 1622 | |
| 1623 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1624 { | |
| 1625 JVMWrapper("JVM_GetClassDeclaredFields"); | |
| 1626 JvmtiVMObjectAllocEventCollector oam; | |
| 1627 | |
| 1628 // Exclude primitive types and array types | |
| 1629 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1630 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
| 0 | 1631 // Return empty array |
| 1142 | 1632 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
| 0 | 1633 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1634 } | |
| 1635 | |
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1636 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
| 0 | 1637 constantPoolHandle cp(THREAD, k->constants()); |
| 1638 | |
| 1639 // Ensure class is linked | |
| 1640 k->link_class(CHECK_NULL); | |
| 1641 | |
| 1642 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
| 1643 bool skip_backtrace = false; | |
| 1644 | |
| 1645 // Allocate result | |
| 1646 int num_fields; | |
| 1647 | |
| 1648 if (publicOnly) { | |
| 1649 num_fields = 0; | |
| 3938 | 1650 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
| 1651 if (fs.access_flags().is_public()) ++num_fields; | |
| 0 | 1652 } |
| 1653 } else { | |
| 3938 | 1654 num_fields = k->java_fields_count(); |
| 0 | 1655 |
| 1142 | 1656 if (k() == SystemDictionary::Throwable_klass()) { |
| 0 | 1657 num_fields--; |
| 1658 skip_backtrace = true; | |
| 1659 } | |
| 1660 } | |
| 1661 | |
| 1142 | 1662 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
| 0 | 1663 objArrayHandle result (THREAD, r); |
| 1664 | |
| 1665 int out_idx = 0; | |
| 1666 fieldDescriptor fd; | |
| 3938 | 1667 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
| 0 | 1668 if (skip_backtrace) { |
| 1669 // 4496456 skip java.lang.Throwable.backtrace | |
| 3938 | 1670 int offset = fs.offset(); |
| 0 | 1671 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
| 1672 } | |
| 1673 | |
| 3938 | 1674 if (!publicOnly || fs.access_flags().is_public()) { |
| 1675 fd.initialize(k(), fs.index()); | |
| 0 | 1676 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
| 1677 result->obj_at_put(out_idx, field); | |
| 1678 ++out_idx; | |
| 1679 } | |
| 1680 } | |
| 1681 assert(out_idx == num_fields, "just checking"); | |
| 1682 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1683 } | |
| 1684 JVM_END | |
| 1685 | |
| 1686 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1687 { | |
| 1688 JVMWrapper("JVM_GetClassDeclaredMethods"); | |
| 1689 JvmtiVMObjectAllocEventCollector oam; | |
| 1690 | |
| 1691 // Exclude primitive types and array types | |
| 1692 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
| 6983 | 1693 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
| 0 | 1694 // Return empty array |
| 1142 | 1695 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), 0, CHECK_NULL); |
| 0 | 1696 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1697 } | |
| 1698 | |
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1699 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
| 0 | 1700 |
| 1701 // Ensure class is linked | |
| 1702 k->link_class(CHECK_NULL); | |
| 1703 | |
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1704 Array<Method*>* methods = k->methods(); |
| 0 | 1705 int methods_length = methods->length(); |
| 1706 int num_methods = 0; | |
| 1707 | |
| 1708 int i; | |
| 1709 for (i = 0; i < methods_length; i++) { | |
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1710 methodHandle method(THREAD, methods->at(i)); |
| 0 | 1711 if (!method->is_initializer()) { |
| 1712 if (!publicOnly || method->is_public()) { | |
| 1713 ++num_methods; | |
| 1714 } | |
| 1715 } | |
| 1716 } | |
| 1717 | |
| 1718 // Allocate result | |
| 1142 | 1719 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), num_methods, CHECK_NULL); |
| 0 | 1720 objArrayHandle result (THREAD, r); |
| 1721 | |
| 1722 int out_idx = 0; | |
| 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 oop m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); | |
| 1728 result->obj_at_put(out_idx, m); | |
| 1729 ++out_idx; | |
| 1730 } | |
| 1731 } | |
| 1732 } | |
| 1733 assert(out_idx == num_methods, "just checking"); | |
| 1734 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1735 } | |
| 1736 JVM_END | |
| 1737 | |
| 1738 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1739 { | |
| 1740 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
| 1741 JvmtiVMObjectAllocEventCollector oam; | |
| 1742 | |
| 1743 // Exclude primitive types and array types | |
| 1744 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
| 6983 | 1745 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
| 0 | 1746 // Return empty array |
| 1142 | 1747 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), 0 , CHECK_NULL); |
| 0 | 1748 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1749 } | |
| 1750 | |
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1751 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
| 0 | 1752 |
| 1753 // Ensure class is linked | |
| 1754 k->link_class(CHECK_NULL); | |
| 1755 | |
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1756 Array<Method*>* methods = k->methods(); |
| 0 | 1757 int methods_length = methods->length(); |
| 1758 int num_constructors = 0; | |
| 1759 | |
| 1760 int i; | |
| 1761 for (i = 0; i < methods_length; i++) { | |
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1762 methodHandle method(THREAD, methods->at(i)); |
| 0 | 1763 if (method->is_initializer() && !method->is_static()) { |
| 1764 if (!publicOnly || method->is_public()) { | |
| 1765 ++num_constructors; | |
| 1766 } | |
| 1767 } | |
| 1768 } | |
| 1769 | |
| 1770 // Allocate result | |
| 1142 | 1771 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), num_constructors, CHECK_NULL); |
| 0 | 1772 objArrayHandle result(THREAD, r); |
| 1773 | |
| 1774 int out_idx = 0; | |
| 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 oop m = Reflection::new_constructor(method, CHECK_NULL); | |
| 1780 result->obj_at_put(out_idx, m); | |
| 1781 ++out_idx; | |
| 1782 } | |
| 1783 } | |
| 1784 } | |
| 1785 assert(out_idx == num_constructors, "just checking"); | |
| 1786 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1787 } | |
| 1788 JVM_END | |
| 1789 | |
| 1790 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
| 1791 { | |
| 1792 JVMWrapper("JVM_GetClassAccessFlags"); | |
| 1793 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1794 // Primitive type | |
| 1795 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 1796 } | |
| 1797 | |
| 6983 | 1798 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 1799 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; |
| 1800 } | |
| 1801 JVM_END | |
| 1802 | |
| 1803 | |
| 1804 // Constant pool access ////////////////////////////////////////////////////////// | |
| 1805 | |
| 1806 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
| 1807 { | |
| 1808 JVMWrapper("JVM_GetClassConstantPool"); | |
| 1809 JvmtiVMObjectAllocEventCollector oam; | |
| 1810 | |
| 1811 // Return null for primitives and arrays | |
| 1812 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
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1813 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1814 if (k->oop_is_instance()) { |
| 0 | 1815 instanceKlassHandle k_h(THREAD, k); |
| 1816 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
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1817 sun_reflect_ConstantPool::set_cp(jcp(), k_h->constants()); |
| 0 | 1818 return JNIHandles::make_local(jcp()); |
| 1819 } | |
| 1820 } | |
| 1821 return NULL; | |
| 1822 } | |
| 1823 JVM_END | |
| 1824 | |
| 1825 | |
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1826 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject obj, jobject unused)) |
| 0 | 1827 { |
| 1828 JVMWrapper("JVM_ConstantPoolGetSize"); | |
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1829 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1830 return cp->length(); |
| 1831 } | |
| 1832 JVM_END | |
| 1833 | |
| 1834 | |
| 1835 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { | |
| 1836 if (!cp->is_within_bounds(index)) { | |
| 1837 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); | |
| 1838 } | |
| 1839 } | |
| 1840 | |
| 1841 | |
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1842 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 1843 { |
| 1844 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
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1845 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1846 bounds_check(cp, index, CHECK_NULL); |
| 1847 constantTag tag = cp->tag_at(index); | |
| 1848 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 1849 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1850 } | |
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1851 Klass* k = cp->klass_at(index, CHECK_NULL); |
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1852 return (jclass) JNIHandles::make_local(k->java_mirror()); |
| 0 | 1853 } |
| 1854 JVM_END | |
| 1855 | |
| 1856 | |
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1857 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 1858 { |
| 1859 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
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1860 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1861 bounds_check(cp, index, CHECK_NULL); |
| 1862 constantTag tag = cp->tag_at(index); | |
| 1863 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 1864 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1865 } | |
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1866 Klass* k = ConstantPool::klass_at_if_loaded(cp, index); |
| 0 | 1867 if (k == NULL) return NULL; |
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1868 return (jclass) JNIHandles::make_local(k->java_mirror()); |
| 0 | 1869 } |
| 1870 JVM_END | |
| 1871 | |
| 1872 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 1873 constantTag tag = cp->tag_at(index); | |
| 1874 if (!tag.is_method() && !tag.is_interface_method()) { | |
| 1875 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1876 } | |
| 1877 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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1878 Klass* k_o; |
| 0 | 1879 if (force_resolution) { |
| 1880 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 1881 } else { | |
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1882 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
| 0 | 1883 if (k_o == NULL) return NULL; |
| 1884 } | |
| 1885 instanceKlassHandle k(THREAD, k_o); | |
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1886 Symbol* name = cp->uncached_name_ref_at(index); |
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1887 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 1888 methodHandle m (THREAD, k->find_method(name, sig)); |
| 1889 if (m.is_null()) { | |
| 1890 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
| 1891 } | |
| 1892 oop method; | |
| 1893 if (!m->is_initializer() || m->is_static()) { | |
| 1894 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
| 1895 } else { | |
| 1896 method = Reflection::new_constructor(m, CHECK_NULL); | |
| 1897 } | |
| 1898 return JNIHandles::make_local(method); | |
| 1899 } | |
| 1900 | |
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1901 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 1902 { |
| 1903 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
| 1904 JvmtiVMObjectAllocEventCollector oam; | |
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1905 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1906 bounds_check(cp, index, CHECK_NULL); |
| 1907 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
| 1908 return res; | |
| 1909 } | |
| 1910 JVM_END | |
| 1911 | |
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1912 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 1913 { |
| 1914 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
| 1915 JvmtiVMObjectAllocEventCollector oam; | |
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1916 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1917 bounds_check(cp, index, CHECK_NULL); |
| 1918 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
| 1919 return res; | |
| 1920 } | |
| 1921 JVM_END | |
| 1922 | |
| 1923 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 1924 constantTag tag = cp->tag_at(index); | |
| 1925 if (!tag.is_field()) { | |
| 1926 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1927 } | |
| 1928 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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1929 Klass* k_o; |
| 0 | 1930 if (force_resolution) { |
| 1931 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 1932 } else { | |
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1933 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
| 0 | 1934 if (k_o == NULL) return NULL; |
| 1935 } | |
| 1936 instanceKlassHandle k(THREAD, k_o); | |
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1937 Symbol* name = cp->uncached_name_ref_at(index); |
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1938 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 1939 fieldDescriptor fd; |
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1940 Klass* target_klass = k->find_field(name, sig, &fd); |
| 0 | 1941 if (target_klass == NULL) { |
| 1942 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
| 1943 } | |
| 1944 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
| 1945 return JNIHandles::make_local(field); | |
| 1946 } | |
| 1947 | |
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1948 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject obj, jobject unusedl, jint index)) |
| 0 | 1949 { |
| 1950 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
| 1951 JvmtiVMObjectAllocEventCollector oam; | |
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1952 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1953 bounds_check(cp, index, CHECK_NULL); |
| 1954 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
| 1955 return res; | |
| 1956 } | |
| 1957 JVM_END | |
| 1958 | |
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1959 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 1960 { |
| 1961 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
| 1962 JvmtiVMObjectAllocEventCollector oam; | |
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1963 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1964 bounds_check(cp, index, CHECK_NULL); |
| 1965 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
| 1966 return res; | |
| 1967 } | |
| 1968 JVM_END | |
| 1969 | |
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1970 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 1971 { |
| 1972 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
| 1973 JvmtiVMObjectAllocEventCollector oam; | |
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1974 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 1975 bounds_check(cp, index, CHECK_NULL); |
| 1976 constantTag tag = cp->tag_at(index); | |
| 1977 if (!tag.is_field_or_method()) { | |
| 1978 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1979 } | |
| 1980 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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1981 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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1982 Symbol* member_name = cp->uncached_name_ref_at(index); |
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1983 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
| 1142 | 1984 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
| 0 | 1985 objArrayHandle dest(THREAD, dest_o); |
| 1986 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
| 1987 dest->obj_at_put(0, str()); | |
| 1988 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
| 1989 dest->obj_at_put(1, str()); | |
| 1990 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
| 1991 dest->obj_at_put(2, str()); | |
| 1992 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 1993 } | |
| 1994 JVM_END | |
| 1995 | |
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1996 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 1997 { |
| 1998 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
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1999 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2000 bounds_check(cp, index, CHECK_0); |
| 2001 constantTag tag = cp->tag_at(index); | |
| 2002 if (!tag.is_int()) { | |
| 2003 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2004 } | |
| 2005 return cp->int_at(index); | |
| 2006 } | |
| 2007 JVM_END | |
| 2008 | |
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2009 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2010 { |
| 2011 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
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2012 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2013 bounds_check(cp, index, CHECK_(0L)); |
| 2014 constantTag tag = cp->tag_at(index); | |
| 2015 if (!tag.is_long()) { | |
| 2016 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2017 } | |
| 2018 return cp->long_at(index); | |
| 2019 } | |
| 2020 JVM_END | |
| 2021 | |
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2022 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2023 { |
| 2024 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
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2025 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2026 bounds_check(cp, index, CHECK_(0.0f)); |
| 2027 constantTag tag = cp->tag_at(index); | |
| 2028 if (!tag.is_float()) { | |
| 2029 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2030 } | |
| 2031 return cp->float_at(index); | |
| 2032 } | |
| 2033 JVM_END | |
| 2034 | |
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2035 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2036 { |
| 2037 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
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2038 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2039 bounds_check(cp, index, CHECK_(0.0)); |
| 2040 constantTag tag = cp->tag_at(index); | |
| 2041 if (!tag.is_double()) { | |
| 2042 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2043 } | |
| 2044 return cp->double_at(index); | |
| 2045 } | |
| 2046 JVM_END | |
| 2047 | |
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2048 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2049 { |
| 2050 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
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2051 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2052 bounds_check(cp, index, CHECK_NULL); |
| 2053 constantTag tag = cp->tag_at(index); | |
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2054 if (!tag.is_string()) { |
| 0 | 2055 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
| 2056 } | |
| 2057 oop str = cp->string_at(index, CHECK_NULL); | |
| 2058 return (jstring) JNIHandles::make_local(str); | |
| 2059 } | |
| 2060 JVM_END | |
| 2061 | |
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2062 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2063 { |
| 2064 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
| 2065 JvmtiVMObjectAllocEventCollector oam; | |
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2066 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2067 bounds_check(cp, index, CHECK_NULL); |
| 2068 constantTag tag = cp->tag_at(index); | |
| 2069 if (!tag.is_symbol()) { | |
| 2070 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2071 } | |
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2072 Symbol* sym = cp->symbol_at(index); |
| 0 | 2073 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 2074 return (jstring) JNIHandles::make_local(str()); | |
| 2075 } | |
| 2076 JVM_END | |
| 2077 | |
| 2078 | |
| 2079 // Assertion support. ////////////////////////////////////////////////////////// | |
| 2080 | |
| 2081 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
| 2082 JVMWrapper("JVM_DesiredAssertionStatus"); | |
| 2083 assert(cls != NULL, "bad class"); | |
| 2084 | |
| 2085 oop r = JNIHandles::resolve(cls); | |
| 2086 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
| 2087 if (java_lang_Class::is_primitive(r)) return false; | |
| 2088 | |
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2089 Klass* k = java_lang_Class::as_Klass(r); |
| 6983 | 2090 assert(k->oop_is_instance(), "must be an instance klass"); |
| 2091 if (! k->oop_is_instance()) return false; | |
| 0 | 2092 |
| 2093 ResourceMark rm(THREAD); | |
| 6983 | 2094 const char* name = k->name()->as_C_string(); |
| 2095 bool system_class = k->class_loader() == NULL; | |
| 0 | 2096 return JavaAssertions::enabled(name, system_class); |
| 2097 | |
| 2098 JVM_END | |
| 2099 | |
| 2100 | |
| 2101 // Return a new AssertionStatusDirectives object with the fields filled in with | |
| 2102 // command-line assertion arguments (i.e., -ea, -da). | |
| 2103 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
| 2104 JVMWrapper("JVM_AssertionStatusDirectives"); | |
| 2105 JvmtiVMObjectAllocEventCollector oam; | |
| 2106 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
| 2107 return JNIHandles::make_local(env, asd); | |
| 2108 JVM_END | |
| 2109 | |
| 2110 // Verification //////////////////////////////////////////////////////////////////////////////// | |
| 2111 | |
| 2112 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
| 2113 | |
| 2114 // RedefineClasses support: bug 6214132 caused verification to fail. | |
| 2115 // All functions from this section should call the jvmtiThreadSate function: | |
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2116 // Klass* class_to_verify_considering_redefinition(Klass* klass). |
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2117 // The function returns a Klass* of the _scratch_class if the verifier |
| 0 | 2118 // was invoked in the middle of the class redefinition. |
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2119 // Otherwise it returns its argument value which is the _the_class Klass*. |
| 0 | 2120 // Please, refer to the description in the jvmtiThreadSate.hpp. |
| 2121 | |
| 2122 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
| 2123 JVMWrapper("JVM_GetClassNameUTF"); | |
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2124 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2125 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2126 return k->name()->as_utf8(); |
| 0 | 2127 JVM_END |
| 2128 | |
| 2129 | |
| 2130 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
| 2131 JVMWrapper("JVM_GetClassCPTypes"); | |
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2132 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2133 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2134 // types will have length zero if this is not an InstanceKlass |
| 0 | 2135 // (length is determined by call to JVM_GetClassCPEntriesCount) |
| 6983 | 2136 if (k->oop_is_instance()) { |
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2137 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2138 for (int index = cp->length() - 1; index >= 0; index--) { |
| 2139 constantTag tag = cp->tag_at(index); | |
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2140 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : tag.value(); |
| 0 | 2141 } |
| 2142 } | |
| 2143 JVM_END | |
| 2144 | |
| 2145 | |
| 2146 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
| 2147 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
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2148 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2149 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2150 if (!k->oop_is_instance()) |
| 0 | 2151 return 0; |
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2152 return InstanceKlass::cast(k)->constants()->length(); |
| 0 | 2153 JVM_END |
| 2154 | |
| 2155 | |
| 2156 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
| 2157 JVMWrapper("JVM_GetClassFieldsCount"); | |
|
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2158 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2159 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2160 if (!k->oop_is_instance()) |
| 0 | 2161 return 0; |
|
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2162 return InstanceKlass::cast(k)->java_fields_count(); |
| 0 | 2163 JVM_END |
| 2164 | |
| 2165 | |
| 2166 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
| 2167 JVMWrapper("JVM_GetClassMethodsCount"); | |
|
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2168 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2169 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2170 if (!k->oop_is_instance()) |
| 0 | 2171 return 0; |
|
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2172 return InstanceKlass::cast(k)->methods()->length(); |
| 0 | 2173 JVM_END |
| 2174 | |
| 2175 | |
| 2176 // The following methods, used for the verifier, are never called with | |
|
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2177 // array klasses, so a direct cast to InstanceKlass is safe. |
| 0 | 2178 // Typically, these methods are called in a loop with bounds determined |
| 2179 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
| 2180 // zero for arrays. | |
| 2181 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
| 2182 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
|
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2183 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2184 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2185 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2186 int length = method->checked_exceptions_length(); |
| 0 | 2187 if (length > 0) { |
|
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2188 CheckedExceptionElement* table= method->checked_exceptions_start(); |
| 0 | 2189 for (int i = 0; i < length; i++) { |
| 2190 exceptions[i] = table[i].class_cp_index; | |
| 2191 } | |
| 2192 } | |
| 2193 JVM_END | |
| 2194 | |
| 2195 | |
| 2196 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
| 2197 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
|
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2198 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2199 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2200 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2201 return method->checked_exceptions_length(); |
| 0 | 2202 JVM_END |
| 2203 | |
| 2204 | |
| 2205 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
| 2206 JVMWrapper("JVM_GetMethodIxByteCode"); | |
|
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2207 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2208 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2209 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2210 memcpy(code, method->code_base(), method->code_size()); |
| 0 | 2211 JVM_END |
| 2212 | |
| 2213 | |
| 2214 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
| 2215 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
|
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2216 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2217 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2218 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2219 return method->code_size(); |
| 0 | 2220 JVM_END |
| 2221 | |
| 2222 | |
| 2223 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
| 2224 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
|
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2225 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2226 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2227 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2228 ExceptionTable extable(method); |
|
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2229 entry->start_pc = extable.start_pc(entry_index); |
|
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2230 entry->end_pc = extable.end_pc(entry_index); |
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2231 entry->handler_pc = extable.handler_pc(entry_index); |
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2232 entry->catchType = extable.catch_type_index(entry_index); |
| 0 | 2233 JVM_END |
| 2234 | |
| 2235 | |
| 2236 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
| 2237 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
|
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2238 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2239 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2240 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2241 return method->exception_table_length(); |
| 0 | 2242 JVM_END |
| 2243 | |
| 2244 | |
| 2245 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
| 2246 JVMWrapper("JVM_GetMethodIxModifiers"); | |
|
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2247 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2248 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2249 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2250 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
| 0 | 2251 JVM_END |
| 2252 | |
| 2253 | |
| 2254 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
| 2255 JVMWrapper("JVM_GetFieldIxModifiers"); | |
|
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2256 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2257 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2258 return InstanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
| 0 | 2259 JVM_END |
| 2260 | |
| 2261 | |
| 2262 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
| 2263 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
|
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2264 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2265 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2266 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2267 return method->max_locals(); |
| 0 | 2268 JVM_END |
| 2269 | |
| 2270 | |
| 2271 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
| 2272 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
|
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2273 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2274 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2275 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2276 return method->size_of_parameters(); |
| 0 | 2277 JVM_END |
| 2278 | |
| 2279 | |
| 2280 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
| 2281 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
|
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2282 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2283 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2284 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2285 return method->verifier_max_stack(); |
| 0 | 2286 JVM_END |
| 2287 | |
| 2288 | |
| 2289 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
| 2290 JVMWrapper("JVM_IsConstructorIx"); | |
| 2291 ResourceMark rm(THREAD); | |
|
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2292 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2293 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2294 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2295 return method->name() == vmSymbols::object_initializer_name(); |
| 0 | 2296 JVM_END |
| 2297 | |
| 2298 | |
| 2299 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) | |
| 2300 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
|
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2301 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2302 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2303 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2304 return method->name()->as_utf8(); |
| 0 | 2305 JVM_END |
| 2306 | |
| 2307 | |
| 2308 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
| 2309 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
|
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2310 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2311 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2312 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2313 return method->signature()->as_utf8(); |
| 0 | 2314 JVM_END |
| 2315 | |
| 2316 /** | |
| 2317 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
| 2318 * read entries in the constant pool. Since the old verifier always | |
| 2319 * works on a copy of the code, it will not see any rewriting that | |
| 2320 * may possibly occur in the middle of verification. So it is important | |
| 2321 * that nothing it calls tries to use the cpCache instead of the raw | |
| 2322 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
| 2323 */ | |
| 2324 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2325 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
|
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2326 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2327 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2328 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2329 switch (cp->tag_at(cp_index).value()) { |
| 2330 case JVM_CONSTANT_Fieldref: | |
| 2331 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
| 2332 default: | |
| 2333 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
| 2334 } | |
| 2335 ShouldNotReachHere(); | |
| 2336 return NULL; | |
| 2337 JVM_END | |
| 2338 | |
| 2339 | |
| 2340 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2341 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
|
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2342 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2343 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2344 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2345 switch (cp->tag_at(cp_index).value()) { |
| 2346 case JVM_CONSTANT_InterfaceMethodref: | |
| 2347 case JVM_CONSTANT_Methodref: | |
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2348 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2349 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
| 2350 default: | |
| 2351 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
| 2352 } | |
| 2353 ShouldNotReachHere(); | |
| 2354 return NULL; | |
| 2355 JVM_END | |
| 2356 | |
| 2357 | |
| 2358 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2359 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
|
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2360 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2361 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2362 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2363 switch (cp->tag_at(cp_index).value()) { |
| 2364 case JVM_CONSTANT_InterfaceMethodref: | |
| 2365 case JVM_CONSTANT_Methodref: | |
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2366 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2367 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
| 2368 default: | |
| 2369 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
| 2370 } | |
| 2371 ShouldNotReachHere(); | |
| 2372 return NULL; | |
| 2373 JVM_END | |
| 2374 | |
| 2375 | |
| 2376 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2377 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
|
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2378 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2379 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2380 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2381 switch (cp->tag_at(cp_index).value()) { |
| 2382 case JVM_CONSTANT_Fieldref: | |
| 2383 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
| 2384 default: | |
| 2385 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
| 2386 } | |
| 2387 ShouldNotReachHere(); | |
| 2388 return NULL; | |
| 2389 JVM_END | |
| 2390 | |
| 2391 | |
| 2392 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2393 JVMWrapper("JVM_GetCPClassNameUTF"); | |
|
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2394 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2395 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2396 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
|
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|
2397 Symbol* classname = cp->klass_name_at(cp_index); |
| 0 | 2398 return classname->as_utf8(); |
| 2399 JVM_END | |
| 2400 | |
| 2401 | |
| 2402 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2403 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
|
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|
2404 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2405 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2406 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2407 switch (cp->tag_at(cp_index).value()) { |
| 2408 case JVM_CONSTANT_Fieldref: { | |
| 2409 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
|
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|
2410 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2411 return classname->as_utf8(); |
| 2412 } | |
| 2413 default: | |
| 2414 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
| 2415 } | |
| 2416 ShouldNotReachHere(); | |
| 2417 return NULL; | |
| 2418 JVM_END | |
| 2419 | |
| 2420 | |
| 2421 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2422 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
|
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|
2423 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2424 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2425 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2426 switch (cp->tag_at(cp_index).value()) { |
| 2427 case JVM_CONSTANT_Methodref: | |
| 2428 case JVM_CONSTANT_InterfaceMethodref: { | |
| 2429 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
|
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|
2430 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2431 return classname->as_utf8(); |
| 2432 } | |
| 2433 default: | |
| 2434 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
| 2435 } | |
| 2436 ShouldNotReachHere(); | |
| 2437 return NULL; | |
| 2438 JVM_END | |
| 2439 | |
| 2440 | |
| 3938 | 2441 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
| 0 | 2442 JVMWrapper("JVM_GetCPFieldModifiers"); |
|
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|
2443 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
|
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|
2444 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
| 0 | 2445 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 2446 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
|
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|
2447 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
|
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|
2448 ConstantPool* cp_called = InstanceKlass::cast(k_called)->constants(); |
| 0 | 2449 switch (cp->tag_at(cp_index).value()) { |
| 2450 case JVM_CONSTANT_Fieldref: { | |
|
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|
2451 Symbol* name = cp->uncached_name_ref_at(cp_index); |
|
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|
2452 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
| 3938 | 2453 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
| 2454 if (fs.name() == name && fs.signature() == signature) { | |
| 2455 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
| 0 | 2456 } |
| 2457 } | |
| 2458 return -1; | |
| 2459 } | |
| 2460 default: | |
| 2461 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
| 2462 } | |
| 2463 ShouldNotReachHere(); | |
| 2464 return 0; | |
| 2465 JVM_END | |
| 2466 | |
| 2467 | |
| 2468 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
| 2469 JVMWrapper("JVM_GetCPMethodModifiers"); | |
|
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|
2470 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
|
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|
2471 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
| 0 | 2472 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 2473 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
|
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|
2474 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2475 switch (cp->tag_at(cp_index).value()) { |
| 2476 case JVM_CONSTANT_Methodref: | |
| 2477 case JVM_CONSTANT_InterfaceMethodref: { | |
|
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|
2478 Symbol* name = cp->uncached_name_ref_at(cp_index); |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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|
2479 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
|
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|
2480 Array<Method*>* methods = InstanceKlass::cast(k_called)->methods(); |
| 0 | 2481 int methods_count = methods->length(); |
| 2482 for (int i = 0; i < methods_count; i++) { | |
|
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|
2483 Method* method = methods->at(i); |
| 0 | 2484 if (method->name() == name && method->signature() == signature) { |
| 2485 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 2486 } | |
| 2487 } | |
| 2488 return -1; | |
| 2489 } | |
| 2490 default: | |
| 2491 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
| 2492 } | |
| 2493 ShouldNotReachHere(); | |
| 2494 return 0; | |
| 2495 JVM_END | |
| 2496 | |
| 2497 | |
| 2498 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
| 2499 | |
| 2500 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
| 2501 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
| 2502 JVM_END | |
| 2503 | |
| 2504 | |
| 2505 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
| 2506 JVMWrapper("JVM_IsSameClassPackage"); | |
| 2507 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
| 2508 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
|
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|
2509 Klass* klass1 = java_lang_Class::as_Klass(class1_mirror); |
|
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|
2510 Klass* klass2 = java_lang_Class::as_Klass(class2_mirror); |
| 0 | 2511 return (jboolean) Reflection::is_same_class_package(klass1, klass2); |
| 2512 JVM_END | |
| 2513 | |
| 2514 | |
| 2515 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
| 2516 | |
| 2517 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
| 2518 JVMWrapper2("JVM_Open (%s)", fname); | |
| 2519 | |
| 2520 //%note jvm_r6 | |
|
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diff
changeset
|
2521 int result = os::open(fname, flags, mode); |
| 0 | 2522 if (result >= 0) { |
| 2523 return result; | |
| 2524 } else { | |
| 2525 switch(errno) { | |
| 2526 case EEXIST: | |
| 2527 return JVM_EEXIST; | |
| 2528 default: | |
| 2529 return -1; | |
| 2530 } | |
| 2531 } | |
| 2532 JVM_END | |
| 2533 | |
| 2534 | |
| 2535 JVM_LEAF(jint, JVM_Close(jint fd)) | |
| 2536 JVMWrapper2("JVM_Close (0x%x)", fd); | |
| 2537 //%note jvm_r6 | |
|
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828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2538 return os::close(fd); |
| 0 | 2539 JVM_END |
| 2540 | |
| 2541 | |
| 2542 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
| 2543 JVMWrapper2("JVM_Read (0x%x)", fd); | |
| 2544 | |
| 2545 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
2546 return (jint)os::restartable_read(fd, buf, nbytes); |
| 0 | 2547 JVM_END |
| 2548 | |
| 2549 | |
| 2550 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
| 2551 JVMWrapper2("JVM_Write (0x%x)", fd); | |
| 2552 | |
| 2553 //%note jvm_r6 | |
|
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828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
2554 return (jint)os::write(fd, buf, nbytes); |
| 0 | 2555 JVM_END |
| 2556 | |
| 2557 | |
| 2558 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
| 2559 JVMWrapper2("JVM_Available (0x%x)", fd); | |
| 2560 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2561 return os::available(fd, pbytes); |
| 0 | 2562 JVM_END |
| 2563 | |
| 2564 | |
| 2565 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
| 2566 JVMWrapper4("JVM_Lseek (0x%x, %Ld, %d)", fd, offset, whence); | |
| 2567 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2568 return os::lseek(fd, offset, whence); |
| 0 | 2569 JVM_END |
| 2570 | |
| 2571 | |
| 2572 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
| 2573 JVMWrapper3("JVM_SetLength (0x%x, %Ld)", fd, length); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2574 return os::ftruncate(fd, length); |
| 0 | 2575 JVM_END |
| 2576 | |
| 2577 | |
| 2578 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
| 2579 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
| 2580 //%note jvm_r6 | |
|
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828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
2581 return os::fsync(fd); |
| 0 | 2582 JVM_END |
| 2583 | |
| 2584 | |
| 2585 // Printing support ////////////////////////////////////////////////// | |
| 2586 extern "C" { | |
| 2587 | |
| 2588 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { | |
| 2589 // see bug 4399518, 4417214 | |
| 2590 if ((intptr_t)count <= 0) return -1; | |
| 2591 return vsnprintf(str, count, fmt, args); | |
| 2592 } | |
| 2593 | |
| 2594 | |
| 2595 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { | |
| 2596 va_list args; | |
| 2597 int len; | |
| 2598 va_start(args, fmt); | |
| 2599 len = jio_vsnprintf(str, count, fmt, args); | |
| 2600 va_end(args); | |
| 2601 return len; | |
| 2602 } | |
| 2603 | |
| 2604 | |
| 2605 int jio_fprintf(FILE* f, const char *fmt, ...) { | |
| 2606 int len; | |
| 2607 va_list args; | |
| 2608 va_start(args, fmt); | |
| 2609 len = jio_vfprintf(f, fmt, args); | |
| 2610 va_end(args); | |
| 2611 return len; | |
| 2612 } | |
| 2613 | |
| 2614 | |
| 2615 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { | |
| 2616 if (Arguments::vfprintf_hook() != NULL) { | |
| 2617 return Arguments::vfprintf_hook()(f, fmt, args); | |
| 2618 } else { | |
| 2619 return vfprintf(f, fmt, args); | |
| 2620 } | |
| 2621 } | |
| 2622 | |
| 2623 | |
| 2191 | 2624 JNIEXPORT int jio_printf(const char *fmt, ...) { |
| 0 | 2625 int len; |
| 2626 va_list args; | |
| 2627 va_start(args, fmt); | |
| 2628 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
| 2629 va_end(args); | |
| 2630 return len; | |
| 2631 } | |
| 2632 | |
| 2633 | |
| 2634 // HotSpot specific jio method | |
| 2635 void jio_print(const char* s) { | |
| 2636 // Try to make this function as atomic as possible. | |
| 2637 if (Arguments::vfprintf_hook() != NULL) { | |
| 2638 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
| 2639 } else { | |
|
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
431
diff
changeset
|
2640 // Make an unused local variable to avoid warning from gcc 4.x compiler. |
|
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
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|
2641 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
| 0 | 2642 } |
| 2643 } | |
| 2644 | |
| 2645 } // Extern C | |
| 2646 | |
| 2647 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
| 2648 | |
| 2649 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
| 2650 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
| 2651 // OSThread objects. The exception to this rule is when the target object is the thread | |
| 2652 // doing the operation, in which case we know that the thread won't exit until the | |
| 2653 // operation is done (all exits being voluntary). There are a few cases where it is | |
| 2654 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
| 2655 // you are alive. While these can still happen, they are not subject to deadlocks if | |
| 2656 // the lock is held while the operation occurs (this is not the case for suspend, for | |
| 2657 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
| 2658 // implementation is local to this file, we always lock Threads_lock for that one. | |
| 2659 | |
| 2660 static void thread_entry(JavaThread* thread, TRAPS) { | |
| 2661 HandleMark hm(THREAD); | |
| 2662 Handle obj(THREAD, thread->threadObj()); | |
| 2663 JavaValue result(T_VOID); | |
| 2664 JavaCalls::call_virtual(&result, | |
| 2665 obj, | |
| 1142 | 2666 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
|
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|
2667 vmSymbols::run_method_name(), |
|
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|
2668 vmSymbols::void_method_signature(), |
| 0 | 2669 THREAD); |
| 2670 } | |
| 2671 | |
| 2672 | |
| 2673 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
| 2674 JVMWrapper("JVM_StartThread"); | |
| 2675 JavaThread *native_thread = NULL; | |
| 2676 | |
| 2677 // We cannot hold the Threads_lock when we throw an exception, | |
| 2678 // due to rank ordering issues. Example: we might need to grab the | |
| 2679 // Heap_lock while we construct the exception. | |
| 2680 bool throw_illegal_thread_state = false; | |
| 2681 | |
| 2682 // We must release the Threads_lock before we can post a jvmti event | |
| 2683 // in Thread::start. | |
| 2684 { | |
| 2685 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
| 2686 // we operate. | |
| 2687 MutexLocker mu(Threads_lock); | |
| 2688 | |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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1980
diff
changeset
|
2689 // Since JDK 5 the java.lang.Thread threadStatus is used to prevent |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
changeset
|
2690 // re-starting an already started thread, so we should usually find |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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1980
diff
changeset
|
2691 // that the JavaThread is null. However for a JNI attached thread |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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1980
diff
changeset
|
2692 // there is a small window between the Thread object being created |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2693 // (with its JavaThread set) and the update to its threadStatus, so we |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
changeset
|
2694 // 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
|
2695 if (java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)) != NULL) { |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
changeset
|
2696 throw_illegal_thread_state = true; |
| 0 | 2697 } else { |
|
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diff
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|
2698 // We could also check the stillborn flag to see if this thread was already stopped, but |
|
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diff
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|
2699 // for historical reasons we let the thread detect that itself when it starts running |
|
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diff
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|
2700 |
| 0 | 2701 jlong size = |
| 2702 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
| 2703 // Allocate the C++ Thread structure and create the native thread. The | |
| 2704 // stack size retrieved from java is signed, but the constructor takes | |
| 2705 // size_t (an unsigned type), so avoid passing negative values which would | |
| 2706 // result in really large stacks. | |
| 2707 size_t sz = size > 0 ? (size_t) size : 0; | |
| 2708 native_thread = new JavaThread(&thread_entry, sz); | |
| 2709 | |
| 2710 // At this point it may be possible that no osthread was created for the | |
| 2711 // JavaThread due to lack of memory. Check for this situation and throw | |
| 2712 // an exception if necessary. Eventually we may want to change this so | |
| 2713 // that we only grab the lock if the thread was created successfully - | |
| 2714 // then we can also do this check and throw the exception in the | |
| 2715 // JavaThread constructor. | |
| 2716 if (native_thread->osthread() != NULL) { | |
| 2717 // Note: the current thread is not being used within "prepare". | |
| 2718 native_thread->prepare(jthread); | |
| 2719 } | |
| 2720 } | |
| 2721 } | |
| 2722 | |
| 2723 if (throw_illegal_thread_state) { | |
| 2724 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
| 2725 } | |
| 2726 | |
| 2727 assert(native_thread != NULL, "Starting null thread?"); | |
| 2728 | |
| 2729 if (native_thread->osthread() == NULL) { | |
| 2730 // No one should hold a reference to the 'native_thread'. | |
| 2731 delete native_thread; | |
| 2732 if (JvmtiExport::should_post_resource_exhausted()) { | |
| 2733 JvmtiExport::post_resource_exhausted( | |
| 2734 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
| 2735 "unable to create new native thread"); | |
| 2736 } | |
| 2737 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
| 2738 "unable to create new native thread"); | |
| 2739 } | |
| 2740 | |
| 2741 Thread::start(native_thread); | |
| 2742 | |
| 2743 JVM_END | |
| 2744 | |
| 2745 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
| 2746 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
| 2747 // but is thought to be reliable and simple. In the case, where the receiver is the | |
|
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2748 // same thread as the sender, no safepoint is needed. |
| 0 | 2749 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
| 2750 JVMWrapper("JVM_StopThread"); | |
| 2751 | |
| 2752 oop java_throwable = JNIHandles::resolve(throwable); | |
| 2753 if (java_throwable == NULL) { | |
| 2754 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 2755 } | |
| 2756 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2757 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
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|
2758 Events::log_exception(JavaThread::current(), |
|
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
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parents:
4717
diff
changeset
|
2759 "JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", |
|
aa3d708d67c4
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4717
diff
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|
2760 receiver, (address)java_thread, throwable); |
|
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2761 // First check if thread is alive |
| 0 | 2762 if (receiver != NULL) { |
| 2763 // Check if exception is getting thrown at self (use oop equality, since the | |
| 2764 // target object might exit) | |
| 2765 if (java_thread == thread->threadObj()) { | |
| 2766 THROW_OOP(java_throwable); | |
| 2767 } else { | |
| 2768 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
| 2769 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
| 2770 } | |
| 2771 } | |
|
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diff
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|
2772 else { |
|
ccfcb502af3f
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dholmes
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1980
diff
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|
2773 // Either: |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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parents:
1980
diff
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|
2774 // - target thread has not been started before being stopped, or |
|
ccfcb502af3f
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dholmes
parents:
1980
diff
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|
2775 // - target thread already terminated |
|
ccfcb502af3f
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dholmes
parents:
1980
diff
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|
2776 // 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
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|
2777 // 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
|
2778 // 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
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diff
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|
2779 // exited setting this flag has no affect |
|
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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
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|
2780 java_lang_Thread::set_stillborn(java_thread); |
|
ccfcb502af3f
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dholmes
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diff
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|
2781 } |
| 0 | 2782 JVM_END |
| 2783 | |
| 2784 | |
| 2785 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
| 2786 JVMWrapper("JVM_IsThreadAlive"); | |
| 2787 | |
| 2788 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
| 2789 return java_lang_Thread::is_alive(thread_oop); | |
| 2790 JVM_END | |
| 2791 | |
| 2792 | |
| 2793 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
| 2794 JVMWrapper("JVM_SuspendThread"); | |
| 2795 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2796 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
| 2797 | |
| 2798 if (receiver != NULL) { | |
| 2799 // thread has run and has not exited (still on threads list) | |
| 2800 | |
| 2801 { | |
| 2802 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
| 2803 if (receiver->is_external_suspend()) { | |
| 2804 // Don't allow nested external suspend requests. We can't return | |
| 2805 // an error from this interface so just ignore the problem. | |
| 2806 return; | |
| 2807 } | |
| 2808 if (receiver->is_exiting()) { // thread is in the process of exiting | |
| 2809 return; | |
| 2810 } | |
| 2811 receiver->set_external_suspend(); | |
| 2812 } | |
| 2813 | |
| 2814 // java_suspend() will catch threads in the process of exiting | |
| 2815 // and will ignore them. | |
| 2816 receiver->java_suspend(); | |
| 2817 | |
| 2818 // It would be nice to have the following assertion in all the | |
| 2819 // time, but it is possible for a racing resume request to have | |
| 2820 // resumed this thread right after we suspended it. Temporarily | |
| 2821 // enable this assertion if you are chasing a different kind of | |
| 2822 // bug. | |
| 2823 // | |
| 2824 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
| 2825 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
| 2826 } | |
| 2827 JVM_END | |
| 2828 | |
| 2829 | |
| 2830 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
| 2831 JVMWrapper("JVM_ResumeThread"); | |
| 2832 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
| 2833 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
| 2834 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
| 2835 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
| 2836 // looks at it. | |
| 2837 MutexLocker ml(Threads_lock); | |
| 2838 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 2839 if (thr != NULL) { | |
| 2840 // the thread has run and is not in the process of exiting | |
| 2841 thr->java_resume(); | |
| 2842 } | |
| 2843 JVM_END | |
| 2844 | |
| 2845 | |
| 2846 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
| 2847 JVMWrapper("JVM_SetThreadPriority"); | |
| 2848 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 2849 MutexLocker ml(Threads_lock); | |
| 2850 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2851 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
| 2852 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 2853 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
| 2854 Thread::set_priority(thr, (ThreadPriority)prio); | |
| 2855 } | |
| 2856 JVM_END | |
| 2857 | |
| 2858 | |
| 2859 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
| 2860 JVMWrapper("JVM_Yield"); | |
| 2861 if (os::dont_yield()) return; | |
| 4006 | 2862 #ifndef USDT2 |
|
1324
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fparain
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1144
diff
changeset
|
2863 HS_DTRACE_PROBE0(hotspot, thread__yield); |
| 4006 | 2864 #else /* USDT2 */ |
| 2865 HOTSPOT_THREAD_YIELD(); | |
| 2866 #endif /* USDT2 */ | |
| 0 | 2867 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
| 2868 // Critical for similar threading behaviour | |
| 2869 if (ConvertYieldToSleep) { | |
| 2870 os::sleep(thread, MinSleepInterval, false); | |
| 2871 } else { | |
| 2872 os::yield(); | |
| 2873 } | |
| 2874 JVM_END | |
| 2875 | |
| 2876 | |
| 2877 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
| 2878 JVMWrapper("JVM_Sleep"); | |
| 2879 | |
| 2880 if (millis < 0) { | |
| 2881 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
| 2882 } | |
| 2883 | |
| 2884 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
| 2885 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 2886 } | |
| 2887 | |
| 2888 // Save current thread state and restore it at the end of this block. | |
| 2889 // And set new thread state to SLEEPING. | |
| 2890 JavaThreadSleepState jtss(thread); | |
| 2891 | |
| 4006 | 2892 #ifndef USDT2 |
|
1324
e392695de029
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fparain
parents:
1144
diff
changeset
|
2893 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); |
| 4006 | 2894 #else /* USDT2 */ |
| 2895 HOTSPOT_THREAD_SLEEP_BEGIN( | |
| 2896 millis); | |
| 2897 #endif /* USDT2 */ | |
|
1324
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1144
diff
changeset
|
2898 |
| 0 | 2899 if (millis == 0) { |
| 2900 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
| 2901 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
| 2902 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
| 2903 // for SOLARIS | |
| 2904 if (ConvertSleepToYield) { | |
| 2905 os::yield(); | |
| 2906 } else { | |
| 2907 ThreadState old_state = thread->osthread()->get_state(); | |
| 2908 thread->osthread()->set_state(SLEEPING); | |
| 2909 os::sleep(thread, MinSleepInterval, false); | |
| 2910 thread->osthread()->set_state(old_state); | |
| 2911 } | |
| 2912 } else { | |
| 2913 ThreadState old_state = thread->osthread()->get_state(); | |
| 2914 thread->osthread()->set_state(SLEEPING); | |
| 2915 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
| 2916 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
| 2917 // us while we were sleeping. We do not overwrite those. | |
| 2918 if (!HAS_PENDING_EXCEPTION) { | |
| 4006 | 2919 #ifndef USDT2 |
|
1324
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6935224: Adding new DTrace probes to work with Palantir
fparain
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1144
diff
changeset
|
2920 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); |
| 4006 | 2921 #else /* USDT2 */ |
| 2922 HOTSPOT_THREAD_SLEEP_END( | |
| 2923 1); | |
| 2924 #endif /* USDT2 */ | |
| 0 | 2925 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
| 2926 // to properly restore the thread state. That's likely wrong. | |
| 2927 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 2928 } | |
| 2929 } | |
| 2930 thread->osthread()->set_state(old_state); | |
| 2931 } | |
| 4006 | 2932 #ifndef USDT2 |
|
1324
e392695de029
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parents:
1144
diff
changeset
|
2933 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); |
| 4006 | 2934 #else /* USDT2 */ |
| 2935 HOTSPOT_THREAD_SLEEP_END( | |
| 2936 0); | |
| 2937 #endif /* USDT2 */ | |
| 0 | 2938 JVM_END |
| 2939 | |
| 2940 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
| 2941 JVMWrapper("JVM_CurrentThread"); | |
| 2942 oop jthread = thread->threadObj(); | |
| 2943 assert (thread != NULL, "no current thread!"); | |
| 2944 return JNIHandles::make_local(env, jthread); | |
| 2945 JVM_END | |
| 2946 | |
| 2947 | |
| 2948 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
| 2949 JVMWrapper("JVM_CountStackFrames"); | |
| 2950 | |
| 2951 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 2952 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2953 bool throw_illegal_thread_state = false; | |
| 2954 int count = 0; | |
| 2955 | |
| 2956 { | |
| 2957 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 2958 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 2959 // acquire of the lock | |
| 2960 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 2961 | |
| 2962 if (thr == NULL) { | |
| 2963 // do nothing | |
| 2964 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
| 2965 // Check whether this java thread has been suspended already. If not, throws | |
| 2966 // IllegalThreadStateException. We defer to throw that exception until | |
| 2967 // Threads_lock is released since loading exception class has to leave VM. | |
| 2968 // The correct way to test a thread is actually suspended is | |
| 2969 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
| 2970 // the Threads_lock. The above tests are sufficient for our purposes | |
| 2971 // provided the walkability of the stack is stable - which it isn't | |
| 2972 // 100% but close enough for most practical purposes. | |
| 2973 throw_illegal_thread_state = true; | |
| 2974 } else { | |
| 2975 // Count all java activation, i.e., number of vframes | |
| 2976 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
| 2977 // Native frames are not counted | |
| 2978 if (!vfst.method()->is_native()) count++; | |
| 2979 } | |
| 2980 } | |
| 2981 } | |
| 2982 | |
| 2983 if (throw_illegal_thread_state) { | |
| 2984 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
| 2985 "this thread is not suspended"); | |
| 2986 } | |
| 2987 return count; | |
| 2988 JVM_END | |
| 2989 | |
| 2990 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
| 2991 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
| 2992 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
| 2993 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
| 2994 // outside the critical section. Threads_lock is hot so we want to minimize | |
| 2995 // the hold-time. A cleaner interface would be to decompose interrupt into | |
| 2996 // two steps. The 1st phase, performed under Threads_lock, would return | |
| 2997 // a closure that'd be invoked after Threads_lock was dropped. | |
| 2998 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
| 2999 // admit spurious wakeups. | |
| 3000 | |
| 3001 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
| 3002 JVMWrapper("JVM_Interrupt"); | |
| 3003 | |
| 3004 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3005 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3006 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 3007 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 3008 // acquire of the lock | |
| 3009 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3010 if (thr != NULL) { | |
| 3011 Thread::interrupt(thr); | |
| 3012 } | |
| 3013 JVM_END | |
| 3014 | |
| 3015 | |
| 3016 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
| 3017 JVMWrapper("JVM_IsInterrupted"); | |
| 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 return JNI_FALSE; | |
| 3027 } else { | |
| 3028 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
| 3029 } | |
| 3030 JVM_END | |
| 3031 | |
| 3032 | |
| 3033 // Return true iff the current thread has locked the object passed in | |
| 3034 | |
| 3035 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
| 3036 JVMWrapper("JVM_HoldsLock"); | |
| 3037 assert(THREAD->is_Java_thread(), "sanity check"); | |
| 3038 if (obj == NULL) { | |
| 3039 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
| 3040 } | |
| 3041 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
| 3042 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
| 3043 JVM_END | |
| 3044 | |
| 3045 | |
| 3046 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
| 3047 JVMWrapper("JVM_DumpAllStacks"); | |
| 3048 VM_PrintThreads op; | |
| 3049 VMThread::execute(&op); | |
| 3050 if (JvmtiExport::should_post_data_dump()) { | |
| 3051 JvmtiExport::post_data_dump(); | |
| 3052 } | |
| 3053 JVM_END | |
| 3054 | |
| 4006 | 3055 JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name)) |
| 3056 JVMWrapper("JVM_SetNativeThreadName"); | |
| 3057 ResourceMark rm(THREAD); | |
| 3058 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3059 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 3060 // Thread naming only supported for the current thread, doesn't work for | |
| 3061 // target threads. | |
| 3062 if (Thread::current() == thr && !thr->has_attached_via_jni()) { | |
| 3063 // we don't set the name of an attached thread to avoid stepping | |
| 3064 // on other programs | |
| 3065 const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
| 3066 os::set_native_thread_name(thread_name); | |
| 3067 } | |
| 3068 JVM_END | |
| 0 | 3069 |
| 3070 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
| 3071 | |
| 3072 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
| 3073 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
| 3074 if (jthread->privileged_stack_top() == NULL) return false; | |
| 3075 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
| 3076 oop loader = jthread->privileged_stack_top()->class_loader(); | |
| 3077 if (loader == NULL) return true; | |
| 3078 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
| 3079 if (trusted) return true; | |
| 3080 } | |
| 3081 return false; | |
| 3082 } | |
| 3083 | |
| 3084 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
| 3085 JVMWrapper("JVM_CurrentLoadedClass"); | |
| 3086 ResourceMark rm(THREAD); | |
| 3087 | |
| 3088 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3089 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3090 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3091 if (trusted) return NULL; | |
| 3092 | |
|
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3093 Method* m = vfst.method(); |
| 0 | 3094 if (!m->is_native()) { |
|
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|
3095 InstanceKlass* holder = m->method_holder(); |
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3096 oop loader = holder->class_loader(); |
| 0 | 3097 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
|
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|
3098 return (jclass) JNIHandles::make_local(env, holder->java_mirror()); |
| 0 | 3099 } |
| 3100 } | |
| 3101 } | |
| 3102 return NULL; | |
| 3103 JVM_END | |
| 3104 | |
| 3105 | |
| 3106 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
| 3107 JVMWrapper("JVM_CurrentClassLoader"); | |
| 3108 ResourceMark rm(THREAD); | |
| 3109 | |
| 3110 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3111 | |
| 3112 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3113 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3114 if (trusted) return NULL; | |
| 3115 | |
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3116 Method* m = vfst.method(); |
| 0 | 3117 if (!m->is_native()) { |
|
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|
3118 InstanceKlass* holder = m->method_holder(); |
| 0 | 3119 assert(holder->is_klass(), "just checking"); |
|
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|
3120 oop loader = holder->class_loader(); |
| 0 | 3121 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
| 3122 return JNIHandles::make_local(env, loader); | |
| 3123 } | |
| 3124 } | |
| 3125 } | |
| 3126 return NULL; | |
| 3127 JVM_END | |
| 3128 | |
| 3129 | |
| 3130 // Utility object for collecting method holders walking down the stack | |
| 3131 class KlassLink: public ResourceObj { | |
| 3132 public: | |
| 3133 KlassHandle klass; | |
| 3134 KlassLink* next; | |
| 3135 | |
| 3136 KlassLink(KlassHandle k) { klass = k; next = NULL; } | |
| 3137 }; | |
| 3138 | |
| 3139 | |
| 3140 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
| 3141 JVMWrapper("JVM_GetClassContext"); | |
| 3142 ResourceMark rm(THREAD); | |
| 3143 JvmtiVMObjectAllocEventCollector oam; | |
| 3144 // Collect linked list of (handles to) method holders | |
| 3145 KlassLink* first = NULL; | |
| 3146 KlassLink* last = NULL; | |
| 3147 int depth = 0; | |
| 3148 | |
| 3149 for(vframeStream vfst(thread); !vfst.at_end(); vfst.security_get_caller_frame(1)) { | |
| 3150 // Native frames are not returned | |
| 3151 if (!vfst.method()->is_native()) { | |
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3152 Klass* holder = vfst.method()->method_holder(); |
| 0 | 3153 assert(holder->is_klass(), "just checking"); |
| 3154 depth++; | |
| 3155 KlassLink* l = new KlassLink(KlassHandle(thread, holder)); | |
| 3156 if (first == NULL) { | |
| 3157 first = last = l; | |
| 3158 } else { | |
| 3159 last->next = l; | |
| 3160 last = l; | |
| 3161 } | |
| 3162 } | |
| 3163 } | |
| 3164 | |
| 3165 // Create result array of type [Ljava/lang/Class; | |
| 1142 | 3166 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), depth, CHECK_NULL); |
| 0 | 3167 // Fill in mirrors corresponding to method holders |
| 3168 int index = 0; | |
| 3169 while (first != NULL) { | |
| 6983 | 3170 result->obj_at_put(index++, first->klass()->java_mirror()); |
| 0 | 3171 first = first->next; |
| 3172 } | |
| 3173 assert(index == depth, "just checking"); | |
| 3174 | |
| 3175 return (jobjectArray) JNIHandles::make_local(env, result); | |
| 3176 JVM_END | |
| 3177 | |
| 3178 | |
| 3179 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
| 3180 JVMWrapper("JVM_ClassDepth"); | |
| 3181 ResourceMark rm(THREAD); | |
| 3182 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 3183 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
| 3184 | |
| 3185 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
|
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3186 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
|
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3187 if (class_name_sym == NULL) { |
| 0 | 3188 return -1; |
| 3189 } | |
| 3190 | |
| 3191 int depth = 0; | |
| 3192 | |
| 3193 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3194 if (!vfst.method()->is_native()) { | |
|
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3195 InstanceKlass* holder = vfst.method()->method_holder(); |
| 0 | 3196 assert(holder->is_klass(), "just checking"); |
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|
3197 if (holder->name() == class_name_sym) { |
| 0 | 3198 return depth; |
| 3199 } | |
| 3200 depth++; | |
| 3201 } | |
| 3202 } | |
| 3203 return -1; | |
| 3204 JVM_END | |
| 3205 | |
| 3206 | |
| 3207 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
| 3208 JVMWrapper("JVM_ClassLoaderDepth"); | |
| 3209 ResourceMark rm(THREAD); | |
| 3210 int depth = 0; | |
| 3211 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3212 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
| 3213 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3214 if (trusted) return -1; | |
| 3215 | |
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3216 Method* m = vfst.method(); |
| 0 | 3217 if (!m->is_native()) { |
|
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|
3218 InstanceKlass* holder = m->method_holder(); |
| 0 | 3219 assert(holder->is_klass(), "just checking"); |
|
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3220 oop loader = holder->class_loader(); |
| 0 | 3221 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
| 3222 return depth; | |
| 3223 } | |
| 3224 depth++; | |
| 3225 } | |
| 3226 } | |
| 3227 return -1; | |
| 3228 JVM_END | |
| 3229 | |
| 3230 | |
| 3231 // java.lang.Package //////////////////////////////////////////////////////////////// | |
| 3232 | |
| 3233 | |
| 3234 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
| 3235 JVMWrapper("JVM_GetSystemPackage"); | |
| 3236 ResourceMark rm(THREAD); | |
| 3237 JvmtiVMObjectAllocEventCollector oam; | |
| 3238 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
| 3239 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
| 3240 return (jstring) JNIHandles::make_local(result); | |
| 3241 JVM_END | |
| 3242 | |
| 3243 | |
| 3244 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
| 3245 JVMWrapper("JVM_GetSystemPackages"); | |
| 3246 JvmtiVMObjectAllocEventCollector oam; | |
| 3247 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
| 3248 return (jobjectArray) JNIHandles::make_local(result); | |
| 3249 JVM_END | |
| 3250 | |
| 3251 | |
| 3252 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
| 3253 | |
|
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3254 bool force_verify_field_access(Klass* current_class, Klass* field_class, AccessFlags access, bool classloader_only) { |
| 0 | 3255 if (current_class == NULL) { |
| 3256 return true; | |
| 3257 } | |
| 3258 if ((current_class == field_class) || access.is_public()) { | |
| 3259 return true; | |
| 3260 } | |
| 3261 | |
| 3262 if (access.is_protected()) { | |
| 3263 // See if current_class is a subclass of field_class | |
| 6983 | 3264 if (current_class->is_subclass_of(field_class)) { |
| 0 | 3265 return true; |
| 3266 } | |
| 3267 } | |
| 3268 | |
|
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3269 return (!access.is_private() && InstanceKlass::cast(current_class)->is_same_class_package(field_class)); |
| 0 | 3270 } |
| 3271 | |
| 3272 | |
| 3273 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
| 3274 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
| 3275 JVMWrapper("JVM_AllocateNewObject"); | |
| 3276 JvmtiVMObjectAllocEventCollector oam; | |
| 3277 // Receiver is not used | |
| 3278 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
| 3279 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
| 3280 | |
| 3281 // Cannot instantiate primitive types | |
| 3282 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
| 3283 ResourceMark rm(THREAD); | |
| 3284 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3285 } | |
| 3286 | |
| 3287 // Arrays not allowed here, must use JVM_AllocateNewArray | |
| 6983 | 3288 if (java_lang_Class::as_Klass(curr_mirror)->oop_is_array() || |
| 3289 java_lang_Class::as_Klass(init_mirror)->oop_is_array()) { | |
| 0 | 3290 ResourceMark rm(THREAD); |
| 3291 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3292 } | |
| 3293 | |
|
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|
3294 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_Klass(curr_mirror)); |
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|
3295 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_Klass(init_mirror)); |
| 0 | 3296 |
| 3297 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
| 3298 | |
| 3299 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
| 3300 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
| 3301 | |
| 3302 // Make sure klass is initialized, since we are about to instantiate one of them. | |
| 3303 curr_klass->initialize(CHECK_NULL); | |
| 3304 | |
| 3305 methodHandle m (THREAD, | |
| 3306 init_klass->find_method(vmSymbols::object_initializer_name(), | |
| 3307 vmSymbols::void_method_signature())); | |
| 3308 if (m.is_null()) { | |
| 3309 ResourceMark rm(THREAD); | |
| 3310 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
| 6983 | 3311 Method::name_and_sig_as_C_string(init_klass(), |
| 0 | 3312 vmSymbols::object_initializer_name(), |
| 3313 vmSymbols::void_method_signature())); | |
| 3314 } | |
| 3315 | |
| 3316 if (curr_klass == init_klass && !m->is_public()) { | |
| 3317 // Calling the constructor for class 'curr_klass'. | |
| 3318 // Only allow calls to a public no-arg constructor. | |
| 3319 // This path corresponds to creating an Externalizable object. | |
| 3320 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3321 } | |
| 3322 | |
| 3323 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
| 3324 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
| 3325 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3326 } | |
| 3327 | |
| 3328 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
| 3329 // Call constructor m. This might call a constructor higher up in the hierachy | |
| 3330 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
| 3331 | |
| 3332 return JNIHandles::make_local(obj()); | |
| 3333 JVM_END | |
| 3334 | |
| 3335 | |
| 3336 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
| 3337 JVMWrapper("JVM_AllocateNewArray"); | |
| 3338 JvmtiVMObjectAllocEventCollector oam; | |
| 3339 oop mirror = JNIHandles::resolve_non_null(currClass); | |
| 3340 | |
| 3341 if (java_lang_Class::is_primitive(mirror)) { | |
| 3342 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3343 } | |
|
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|
3344 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 3345 oop result; |
| 3346 | |
|
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|
3347 if (k->oop_is_typeArray()) { |
| 0 | 3348 // typeArray |
|
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|
3349 result = TypeArrayKlass::cast(k)->allocate(length, CHECK_NULL); |
|
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|
3350 } else if (k->oop_is_objArray()) { |
| 0 | 3351 // objArray |
|
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|
3352 ObjArrayKlass* oak = ObjArrayKlass::cast(k); |
| 0 | 3353 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) |
| 3354 result = oak->allocate(length, CHECK_NULL); | |
| 3355 } else { | |
| 3356 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3357 } | |
| 3358 return JNIHandles::make_local(env, result); | |
| 3359 JVM_END | |
| 3360 | |
| 3361 | |
| 3362 // Return the first non-null class loader up the execution stack, or null | |
| 3363 // if only code from the null class loader is on the stack. | |
| 3364 | |
| 3365 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
| 3366 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3367 // UseNewReflection | |
| 3368 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
|
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|
3369 oop loader = vfst.method()->method_holder()->class_loader(); |
| 0 | 3370 if (loader != NULL) { |
| 3371 return JNIHandles::make_local(env, loader); | |
| 3372 } | |
| 3373 } | |
| 3374 return NULL; | |
| 3375 JVM_END | |
| 3376 | |
| 3377 | |
| 3378 // Load a class relative to the most recent class on the stack with a non-null | |
| 3379 // classloader. | |
| 3380 // This function has been deprecated and should not be considered part of the | |
| 3381 // specified JVM interface. | |
| 3382 | |
| 3383 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
| 3384 jclass currClass, jstring currClassName)) | |
| 3385 JVMWrapper("JVM_LoadClass0"); | |
| 3386 // Receiver is not used | |
| 3387 ResourceMark rm(THREAD); | |
| 3388 | |
| 3389 // Class name argument is not guaranteed to be in internal format | |
| 3390 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
| 3391 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
| 3392 | |
| 3393 const char* str = java_lang_String::as_utf8_string(string()); | |
| 3394 | |
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3395 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
| 0 | 3396 // It's impossible to create this class; the name cannot fit |
| 3397 // into the constant pool. | |
| 3398 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
| 3399 } | |
| 3400 | |
|
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3401 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
| 0 | 3402 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
| 3403 // Find the most recent class on the stack with a non-null classloader | |
| 3404 oop loader = NULL; | |
| 3405 oop protection_domain = NULL; | |
| 3406 if (curr_klass.is_null()) { | |
| 3407 for (vframeStream vfst(thread); | |
| 3408 !vfst.at_end() && loader == NULL; | |
| 3409 vfst.next()) { | |
| 3410 if (!vfst.method()->is_native()) { | |
|
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|
3411 InstanceKlass* holder = vfst.method()->method_holder(); |
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3412 loader = holder->class_loader(); |
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|
3413 protection_domain = holder->protection_domain(); |
| 0 | 3414 } |
| 3415 } | |
| 3416 } else { | |
|
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3417 Klass* curr_klass_oop = java_lang_Class::as_Klass(curr_klass()); |
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3418 loader = InstanceKlass::cast(curr_klass_oop)->class_loader(); |
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3419 protection_domain = InstanceKlass::cast(curr_klass_oop)->protection_domain(); |
| 0 | 3420 } |
| 3421 Handle h_loader(THREAD, loader); | |
| 3422 Handle h_prot (THREAD, protection_domain); | |
|
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3423 jclass result = find_class_from_class_loader(env, name, true, h_loader, h_prot, |
|
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|
3424 false, thread); |
|
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|
3425 if (TraceClassResolution && result != NULL) { |
|
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|
3426 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
|
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|
3427 } |
|
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|
3428 return result; |
| 0 | 3429 JVM_END |
| 3430 | |
| 3431 | |
| 3432 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
| 3433 | |
| 3434 | |
| 3435 // resolve array handle and check arguments | |
| 3436 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
| 3437 if (arr == NULL) { | |
| 3438 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 3439 } | |
| 3440 oop a = JNIHandles::resolve_non_null(arr); | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3441 if (!a->is_array() || (type_array_only && !a->is_typeArray())) { |
| 0 | 3442 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); |
| 3443 } | |
| 3444 return arrayOop(a); | |
| 3445 } | |
| 3446 | |
| 3447 | |
| 3448 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
| 3449 JVMWrapper("JVM_GetArrayLength"); | |
| 3450 arrayOop a = check_array(env, arr, false, CHECK_0); | |
| 3451 return a->length(); | |
| 3452 JVM_END | |
| 3453 | |
| 3454 | |
| 3455 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
| 3456 JVMWrapper("JVM_Array_Get"); | |
| 3457 JvmtiVMObjectAllocEventCollector oam; | |
| 3458 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
| 3459 jvalue value; | |
| 3460 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
| 3461 oop box = Reflection::box(&value, type, CHECK_NULL); | |
| 3462 return JNIHandles::make_local(env, box); | |
| 3463 JVM_END | |
| 3464 | |
| 3465 | |
| 3466 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
| 3467 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
| 3468 jvalue value; | |
| 3469 value.i = 0; // to initialize value before getting used in CHECK | |
| 3470 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
| 3471 assert(a->is_typeArray(), "just checking"); | |
| 3472 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
| 3473 BasicType wide_type = (BasicType) wCode; | |
| 3474 if (type != wide_type) { | |
| 3475 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
| 3476 } | |
| 3477 return value; | |
| 3478 JVM_END | |
| 3479 | |
| 3480 | |
| 3481 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
| 3482 JVMWrapper("JVM_SetArrayElement"); | |
| 3483 arrayOop a = check_array(env, arr, false, CHECK); | |
| 3484 oop box = JNIHandles::resolve(val); | |
| 3485 jvalue value; | |
| 3486 value.i = 0; // to initialize value before getting used in CHECK | |
| 3487 BasicType value_type; | |
| 3488 if (a->is_objArray()) { | |
| 3489 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
| 3490 value_type = Reflection::unbox_for_regular_object(box, &value); | |
| 3491 } else { | |
| 3492 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
| 3493 } | |
| 3494 Reflection::array_set(&value, a, index, value_type, CHECK); | |
| 3495 JVM_END | |
| 3496 | |
| 3497 | |
| 3498 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
| 3499 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
| 3500 arrayOop a = check_array(env, arr, true, CHECK); | |
| 3501 assert(a->is_typeArray(), "just checking"); | |
| 3502 BasicType value_type = (BasicType) vCode; | |
| 3503 Reflection::array_set(&v, a, index, value_type, CHECK); | |
| 3504 JVM_END | |
| 3505 | |
| 3506 | |
| 3507 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
| 3508 JVMWrapper("JVM_NewArray"); | |
| 3509 JvmtiVMObjectAllocEventCollector oam; | |
| 3510 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3511 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
| 3512 return JNIHandles::make_local(env, result); | |
| 3513 JVM_END | |
| 3514 | |
| 3515 | |
| 3516 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
| 3517 JVMWrapper("JVM_NewMultiArray"); | |
| 3518 JvmtiVMObjectAllocEventCollector oam; | |
| 3519 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
| 3520 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3521 assert(dim_array->is_typeArray(), "just checking"); | |
| 3522 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
| 3523 return JNIHandles::make_local(env, result); | |
| 3524 JVM_END | |
| 3525 | |
| 3526 | |
| 3527 // Networking library support //////////////////////////////////////////////////////////////////// | |
| 3528 | |
| 3529 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
| 3530 JVMWrapper("JVM_InitializeSocketLibrary"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3531 return 0; |
| 0 | 3532 JVM_END |
| 3533 | |
| 3534 | |
| 3535 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
| 3536 JVMWrapper("JVM_Socket"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3537 return os::socket(domain, type, protocol); |
| 0 | 3538 JVM_END |
| 3539 | |
| 3540 | |
| 3541 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
| 3542 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
| 3543 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3544 return os::socket_close(fd); |
| 0 | 3545 JVM_END |
| 3546 | |
| 3547 | |
| 3548 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
| 3549 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
| 3550 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3551 return os::socket_shutdown(fd, howto); |
| 0 | 3552 JVM_END |
| 3553 | |
| 3554 | |
| 3555 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3556 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
| 3557 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3558 return os::recv(fd, buf, (size_t)nBytes, (uint)flags); |
| 0 | 3559 JVM_END |
| 3560 | |
| 3561 | |
| 3562 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3563 JVMWrapper2("JVM_Send (0x%x)", fd); | |
| 3564 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3565 return os::send(fd, buf, (size_t)nBytes, (uint)flags); |
| 0 | 3566 JVM_END |
| 3567 | |
| 3568 | |
| 3569 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
| 3570 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
| 3571 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3572 return os::timeout(fd, timeout); |
| 0 | 3573 JVM_END |
| 3574 | |
| 3575 | |
| 3576 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
| 3577 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
| 3578 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3579 return os::listen(fd, count); |
| 0 | 3580 JVM_END |
| 3581 | |
| 3582 | |
| 3583 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
| 3584 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
| 3585 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3586 return os::connect(fd, him, (socklen_t)len); |
| 0 | 3587 JVM_END |
| 3588 | |
| 3589 | |
| 3590 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
| 3591 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
| 3592 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3593 return os::bind(fd, him, (socklen_t)len); |
| 0 | 3594 JVM_END |
| 3595 | |
| 3596 | |
| 3597 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
| 3598 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
| 3599 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3600 socklen_t socklen = (socklen_t)(*len); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3601 jint result = os::accept(fd, him, &socklen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3602 *len = (jint)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3603 return result; |
| 0 | 3604 JVM_END |
| 3605 | |
| 3606 | |
| 3607 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
| 3608 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
| 3609 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3610 socklen_t socklen = (socklen_t)(*fromlen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3611 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
|
3612 *fromlen = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3613 return result; |
| 0 | 3614 JVM_END |
| 3615 | |
| 3616 | |
| 3617 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
| 3618 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
| 3619 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3620 socklen_t socklen = (socklen_t)(*len); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3621 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
|
3622 *len = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3623 return result; |
| 0 | 3624 JVM_END |
| 3625 | |
| 3626 | |
| 3627 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
| 3628 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
| 3629 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3630 return os::sendto(fd, buf, (size_t)len, (uint)flags, to, (socklen_t)tolen); |
| 0 | 3631 JVM_END |
| 3632 | |
| 3633 | |
| 3634 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
| 3635 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
| 3636 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3637 return os::socket_available(fd, pbytes); |
| 0 | 3638 JVM_END |
| 3639 | |
| 3640 | |
| 3641 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
| 3642 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
| 3643 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3644 socklen_t socklen = (socklen_t)(*optlen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3645 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
|
3646 *optlen = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3647 return result; |
| 0 | 3648 JVM_END |
| 3649 | |
| 3650 | |
| 3651 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
| 3652 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
| 3653 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3654 return os::set_sock_opt(fd, level, optname, optval, (socklen_t)optlen); |
| 0 | 3655 JVM_END |
| 3656 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3657 |
| 0 | 3658 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) |
| 3659 JVMWrapper("JVM_GetHostName"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3660 return os::get_host_name(name, namelen); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3661 JVM_END |
| 0 | 3662 |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3663 |
| 0 | 3664 // Library support /////////////////////////////////////////////////////////////////////////// |
| 3665 | |
| 3666 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
| 3667 //%note jvm_ct | |
| 3668 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
| 3669 char ebuf[1024]; | |
| 3670 void *load_result; | |
| 3671 { | |
| 3672 ThreadToNativeFromVM ttnfvm(thread); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3673 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
| 0 | 3674 } |
| 3675 if (load_result == NULL) { | |
| 3676 char msg[1024]; | |
| 3677 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
| 3678 // Since 'ebuf' may contain a string encoded using | |
| 3679 // platform encoding scheme, we need to pass | |
| 3680 // Exceptions::unsafe_to_utf8 to the new_exception method | |
| 3681 // as the last argument. See bug 6367357. | |
| 3682 Handle h_exception = | |
| 3683 Exceptions::new_exception(thread, | |
| 3684 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
| 3685 msg, Exceptions::unsafe_to_utf8); | |
| 3686 | |
| 3687 THROW_HANDLE_0(h_exception); | |
| 3688 } | |
| 3689 return load_result; | |
| 3690 JVM_END | |
| 3691 | |
| 3692 | |
| 3693 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
| 3694 JVMWrapper("JVM_UnloadLibrary"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3695 os::dll_unload(handle); |
| 0 | 3696 JVM_END |
| 3697 | |
| 3698 | |
| 3699 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
| 3700 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3701 return os::dll_lookup(handle, name); |
| 0 | 3702 JVM_END |
| 3703 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3704 |
| 0 | 3705 // Floating point support //////////////////////////////////////////////////////////////////// |
| 3706 | |
| 3707 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
| 3708 JVMWrapper("JVM_IsNaN"); | |
| 3709 return g_isnan(a); | |
| 3710 JVM_END | |
| 3711 | |
| 3712 | |
| 3713 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
| 3714 | |
| 3715 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
| 3716 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
| 3717 return Threads::is_supported_jni_version_including_1_1(version); | |
| 3718 JVM_END | |
| 3719 | |
| 3720 | |
| 3721 // String support /////////////////////////////////////////////////////////////////////////// | |
| 3722 | |
| 3723 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
| 3724 JVMWrapper("JVM_InternString"); | |
| 3725 JvmtiVMObjectAllocEventCollector oam; | |
| 3726 if (str == NULL) return NULL; | |
| 3727 oop string = JNIHandles::resolve_non_null(str); | |
| 3728 oop result = StringTable::intern(string, CHECK_NULL); | |
| 3729 return (jstring) JNIHandles::make_local(env, result); | |
| 3730 JVM_END | |
| 3731 | |
| 3732 | |
| 3733 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
| 3734 | |
| 3735 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
| 3736 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
| 3737 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
| 3738 // that only works with java threads. | |
| 3739 | |
| 3740 | |
| 3741 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
| 3742 VM_Exit::block_if_vm_exited(); | |
| 3743 JVMWrapper("JVM_RawMonitorCreate"); | |
| 3744 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
| 3745 } | |
| 3746 | |
| 3747 | |
| 3748 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
| 3749 VM_Exit::block_if_vm_exited(); | |
| 3750 JVMWrapper("JVM_RawMonitorDestroy"); | |
| 3751 delete ((Mutex*) mon); | |
| 3752 } | |
| 3753 | |
| 3754 | |
| 3755 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
| 3756 VM_Exit::block_if_vm_exited(); | |
| 3757 JVMWrapper("JVM_RawMonitorEnter"); | |
| 3758 ((Mutex*) mon)->jvm_raw_lock(); | |
| 3759 return 0; | |
| 3760 } | |
| 3761 | |
| 3762 | |
| 3763 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
| 3764 VM_Exit::block_if_vm_exited(); | |
| 3765 JVMWrapper("JVM_RawMonitorExit"); | |
| 3766 ((Mutex*) mon)->jvm_raw_unlock(); | |
| 3767 } | |
| 3768 | |
| 3769 | |
| 3770 // Support for Serialization | |
| 3771 | |
| 3772 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
| 3773 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
| 3774 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
| 3775 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
| 3776 | |
| 3777 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
| 3778 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
| 3779 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
| 3780 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
| 3781 | |
| 3782 | |
| 3783 void initialize_converter_functions() { | |
| 3784 if (JDK_Version::is_gte_jdk14x_version()) { | |
| 3785 // These functions only exist for compatibility with 1.3.1 and earlier | |
| 3786 return; | |
| 3787 } | |
| 3788 | |
| 3789 // called from universe_post_init() | |
| 3790 assert( | |
| 3791 int_bits_to_float_fn == NULL && | |
| 3792 long_bits_to_double_fn == NULL && | |
| 3793 float_to_int_bits_fn == NULL && | |
| 3794 double_to_long_bits_fn == NULL , | |
| 3795 "initialization done twice" | |
| 3796 ); | |
| 3797 // initialize | |
| 3798 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
| 3799 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
| 3800 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
| 3801 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
| 3802 // verify | |
| 3803 assert( | |
| 3804 int_bits_to_float_fn != NULL && | |
| 3805 long_bits_to_double_fn != NULL && | |
| 3806 float_to_int_bits_fn != NULL && | |
| 3807 double_to_long_bits_fn != NULL , | |
| 3808 "initialization failed" | |
| 3809 ); | |
| 3810 } | |
| 3811 | |
| 3812 | |
| 3813 // Serialization | |
| 3814 JVM_ENTRY(void, JVM_SetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
| 3815 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
| 3816 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
| 3817 | |
| 3818 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
| 3819 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
| 3820 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
| 3821 oop o = JNIHandles::resolve(obj); | |
| 3822 | |
| 3823 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
| 3824 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 3825 } | |
| 3826 | |
| 3827 jsize nfids = fids->length(); | |
| 3828 if (nfids == 0) return; | |
| 3829 | |
| 3830 if (tcodes->length() < nfids) { | |
| 3831 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
| 3832 } | |
| 3833 | |
| 3834 jsize off = 0; | |
| 3835 /* loop through fields, setting values */ | |
| 3836 for (jsize i = 0; i < nfids; i++) { | |
| 3837 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
| 3838 int field_offset; | |
| 3839 if (fid != NULL) { | |
| 3840 // NULL is a legal value for fid, but retrieving the field offset | |
| 3841 // trigger assertion in that case | |
| 3842 field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 3843 } | |
| 3844 | |
| 3845 switch (tcodes->char_at(i)) { | |
| 3846 case 'Z': | |
| 3847 if (fid != NULL) { | |
| 3848 jboolean val = (dbuf->byte_at(off) != 0) ? JNI_TRUE : JNI_FALSE; | |
| 3849 o->bool_field_put(field_offset, val); | |
| 3850 } | |
| 3851 off++; | |
| 3852 break; | |
| 3853 | |
| 3854 case 'B': | |
| 3855 if (fid != NULL) { | |
| 3856 o->byte_field_put(field_offset, dbuf->byte_at(off)); | |
| 3857 } | |
| 3858 off++; | |
| 3859 break; | |
| 3860 | |
| 3861 case 'C': | |
| 3862 if (fid != NULL) { | |
| 3863 jchar val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
| 3864 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
| 3865 o->char_field_put(field_offset, val); | |
| 3866 } | |
| 3867 off += 2; | |
| 3868 break; | |
| 3869 | |
| 3870 case 'S': | |
| 3871 if (fid != NULL) { | |
| 3872 jshort val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
| 3873 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
| 3874 o->short_field_put(field_offset, val); | |
| 3875 } | |
| 3876 off += 2; | |
| 3877 break; | |
| 3878 | |
| 3879 case 'I': | |
| 3880 if (fid != NULL) { | |
| 3881 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
| 3882 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
| 3883 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
| 3884 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
| 3885 o->int_field_put(field_offset, ival); | |
| 3886 } | |
| 3887 off += 4; | |
| 3888 break; | |
| 3889 | |
| 3890 case 'F': | |
| 3891 if (fid != NULL) { | |
| 3892 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
| 3893 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
| 3894 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
| 3895 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
| 3896 jfloat fval = (*int_bits_to_float_fn)(env, NULL, ival); | |
| 3897 o->float_field_put(field_offset, fval); | |
| 3898 } | |
| 3899 off += 4; | |
| 3900 break; | |
| 3901 | |
| 3902 case 'J': | |
| 3903 if (fid != NULL) { | |
| 3904 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
| 3905 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
| 3906 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
| 3907 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
| 3908 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
| 3909 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
| 3910 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
| 3911 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
| 3912 o->long_field_put(field_offset, lval); | |
| 3913 } | |
| 3914 off += 8; | |
| 3915 break; | |
| 3916 | |
| 3917 case 'D': | |
| 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 jdouble dval = (*long_bits_to_double_fn)(env, NULL, lval); | |
| 3928 o->double_field_put(field_offset, dval); | |
| 3929 } | |
| 3930 off += 8; | |
| 3931 break; | |
| 3932 | |
| 3933 default: | |
| 3934 // Illegal typecode | |
| 3935 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
| 3936 } | |
| 3937 } | |
| 3938 JVM_END | |
| 3939 | |
| 3940 | |
| 3941 JVM_ENTRY(void, JVM_GetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
| 3942 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
| 3943 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
| 3944 | |
| 3945 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
| 3946 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
| 3947 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
| 3948 oop o = JNIHandles::resolve(obj); | |
| 3949 | |
| 3950 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
| 3951 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 3952 } | |
| 3953 | |
| 3954 jsize nfids = fids->length(); | |
| 3955 if (nfids == 0) return; | |
| 3956 | |
| 3957 if (tcodes->length() < nfids) { | |
| 3958 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
| 3959 } | |
| 3960 | |
| 3961 /* loop through fields, fetching values */ | |
| 3962 jsize off = 0; | |
| 3963 for (jsize i = 0; i < nfids; i++) { | |
| 3964 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
| 3965 if (fid == NULL) { | |
| 3966 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 3967 } | |
| 3968 int field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 3969 | |
| 3970 switch (tcodes->char_at(i)) { | |
| 3971 case 'Z': | |
| 3972 { | |
| 3973 jboolean val = o->bool_field(field_offset); | |
| 3974 dbuf->byte_at_put(off++, (val != 0) ? 1 : 0); | |
| 3975 } | |
| 3976 break; | |
| 3977 | |
| 3978 case 'B': | |
| 3979 dbuf->byte_at_put(off++, o->byte_field(field_offset)); | |
| 3980 break; | |
| 3981 | |
| 3982 case 'C': | |
| 3983 { | |
| 3984 jchar val = o->char_field(field_offset); | |
| 3985 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 3986 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 3987 } | |
| 3988 break; | |
| 3989 | |
| 3990 case 'S': | |
| 3991 { | |
| 3992 jshort val = o->short_field(field_offset); | |
| 3993 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 3994 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 3995 } | |
| 3996 break; | |
| 3997 | |
| 3998 case 'I': | |
| 3999 { | |
| 4000 jint val = o->int_field(field_offset); | |
| 4001 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
| 4002 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
| 4003 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 4004 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 4005 } | |
| 4006 break; | |
| 4007 | |
| 4008 case 'F': | |
| 4009 { | |
| 4010 jfloat fval = o->float_field(field_offset); | |
| 4011 jint ival = (*float_to_int_bits_fn)(env, NULL, fval); | |
| 4012 dbuf->byte_at_put(off++, (ival >> 24) & 0xFF); | |
| 4013 dbuf->byte_at_put(off++, (ival >> 16) & 0xFF); | |
| 4014 dbuf->byte_at_put(off++, (ival >> 8) & 0xFF); | |
| 4015 dbuf->byte_at_put(off++, (ival >> 0) & 0xFF); | |
| 4016 } | |
| 4017 break; | |
| 4018 | |
| 4019 case 'J': | |
| 4020 { | |
| 4021 jlong val = o->long_field(field_offset); | |
| 4022 dbuf->byte_at_put(off++, (val >> 56) & 0xFF); | |
| 4023 dbuf->byte_at_put(off++, (val >> 48) & 0xFF); | |
| 4024 dbuf->byte_at_put(off++, (val >> 40) & 0xFF); | |
| 4025 dbuf->byte_at_put(off++, (val >> 32) & 0xFF); | |
| 4026 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
| 4027 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
| 4028 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 4029 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 4030 } | |
| 4031 break; | |
| 4032 | |
| 4033 case 'D': | |
| 4034 { | |
| 4035 jdouble dval = o->double_field(field_offset); | |
| 4036 jlong lval = (*double_to_long_bits_fn)(env, NULL, dval); | |
| 4037 dbuf->byte_at_put(off++, (lval >> 56) & 0xFF); | |
| 4038 dbuf->byte_at_put(off++, (lval >> 48) & 0xFF); | |
| 4039 dbuf->byte_at_put(off++, (lval >> 40) & 0xFF); | |
| 4040 dbuf->byte_at_put(off++, (lval >> 32) & 0xFF); | |
| 4041 dbuf->byte_at_put(off++, (lval >> 24) & 0xFF); | |
| 4042 dbuf->byte_at_put(off++, (lval >> 16) & 0xFF); | |
| 4043 dbuf->byte_at_put(off++, (lval >> 8) & 0xFF); | |
| 4044 dbuf->byte_at_put(off++, (lval >> 0) & 0xFF); | |
| 4045 } | |
| 4046 break; | |
| 4047 | |
| 4048 default: | |
| 4049 // Illegal typecode | |
| 4050 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
| 4051 } | |
| 4052 } | |
| 4053 JVM_END | |
| 4054 | |
| 4055 | |
| 4056 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
| 4057 | |
|
2177
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2162
diff
changeset
|
4058 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS) { |
| 0 | 4059 // Security Note: |
| 4060 // The Java level wrapper will perform the necessary security check allowing | |
| 4061 // us to pass the NULL as the initiating class loader. | |
|
6725
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diff
changeset
|
4062 Klass* klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); |
|
878
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
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875
diff
changeset
|
4063 |
| 0 | 4064 KlassHandle klass_handle(THREAD, klass); |
| 4065 // Check if we should initialize the class | |
| 4066 if (init && klass_handle->oop_is_instance()) { | |
| 4067 klass_handle->initialize(CHECK_NULL); | |
| 4068 } | |
| 4069 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
| 4070 } | |
| 4071 | |
| 4072 | |
| 4073 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
| 4074 | |
| 4075 #ifndef PRODUCT | |
| 4076 | |
| 4077 extern "C" { | |
| 4078 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
| 4079 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
| 4080 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
| 4081 } | |
| 4082 | |
| 4083 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
| 4084 JVMWrapper("JVM_AccessBoolVMFlag"); | |
| 4085 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, INTERNAL); | |
| 4086 JVM_END | |
| 4087 | |
| 4088 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
| 4089 JVMWrapper("JVM_AccessVMIntFlag"); | |
| 4090 intx v; | |
| 4091 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, INTERNAL); | |
| 4092 *value = (jint)v; | |
| 4093 return result; | |
| 4094 JVM_END | |
| 4095 | |
| 4096 | |
| 4097 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
| 4098 JVMWrapper("JVM_VMBreakPoint"); | |
| 4099 oop the_obj = JNIHandles::resolve(obj); | |
| 4100 BREAKPOINT; | |
| 4101 JVM_END | |
| 4102 | |
| 4103 | |
| 4104 #endif | |
| 4105 | |
| 4106 | |
| 4107 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4108 | |
| 4109 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
| 4110 JVMWrapper("JVM_InvokeMethod"); | |
| 4111 Handle method_handle; | |
| 4112 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
| 4113 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
| 4114 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
| 4115 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4116 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
| 4117 jobject res = JNIHandles::make_local(env, result); | |
| 4118 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4119 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
| 4120 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
| 4121 if (java_lang_Class::is_primitive(ret_type)) { | |
| 4122 // Only for primitive type vm allocates memory for java object. | |
| 4123 // See box() method. | |
| 4124 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4125 } | |
| 4126 } | |
| 4127 return res; | |
| 4128 } else { | |
| 4129 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
| 4130 } | |
| 4131 JVM_END | |
| 4132 | |
| 4133 | |
| 4134 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
| 4135 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
| 4136 oop constructor_mirror = JNIHandles::resolve(c); | |
| 4137 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4138 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
| 4139 jobject res = JNIHandles::make_local(env, result); | |
| 4140 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4141 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4142 } | |
| 4143 return res; | |
| 4144 JVM_END | |
| 4145 | |
| 4146 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4147 | |
| 4148 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
| 4149 JVMWrapper("JVM_SupportsCX8"); | |
| 4150 return VM_Version::supports_cx8(); | |
| 4151 JVM_END | |
| 4152 | |
| 4153 | |
| 4154 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
| 4155 JVMWrapper("JVM_CX8Field"); | |
| 4156 jlong res; | |
| 4157 oop o = JNIHandles::resolve(obj); | |
| 4158 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 4159 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
| 4160 | |
| 4161 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
| 4162 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
| 4163 | |
| 4164 return res == oldVal; | |
| 4165 JVM_END | |
| 4166 | |
|
116
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|
4167 // DTrace /////////////////////////////////////////////////////////////////// |
|
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diff
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|
4168 |
|
018d5b58dd4f
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|
4169 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
|
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|
4170 JVMWrapper("JVM_DTraceGetVersion"); |
|
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diff
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|
4171 return (jint)JVM_TRACING_DTRACE_VERSION; |
|
018d5b58dd4f
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diff
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|
4172 JVM_END |
|
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diff
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|
4173 |
|
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diff
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|
4174 JVM_ENTRY(jlong,JVM_DTraceActivate( |
|
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diff
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|
4175 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
|
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diff
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|
4176 JVM_DTraceProvider* providers)) |
|
018d5b58dd4f
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diff
changeset
|
4177 JVMWrapper("JVM_DTraceActivate"); |
|
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diff
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|
4178 return DTraceJSDT::activate( |
|
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diff
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|
4179 version, module_name, providers_count, providers, CHECK_0); |
|
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|
4180 JVM_END |
|
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4181 |
|
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4182 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
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4183 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
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4184 return DTraceJSDT::is_probe_enabled(method); |
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4185 JVM_END |
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4186 |
|
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4187 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
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4188 JVMWrapper("JVM_DTraceDispose"); |
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4189 DTraceJSDT::dispose(handle); |
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4190 JVM_END |
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4191 |
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4192 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
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4193 JVMWrapper("JVM_DTraceIsSupported"); |
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4194 return DTraceJSDT::is_supported(); |
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4195 JVM_END |
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4196 |
| 0 | 4197 // Returns an array of all live Thread objects (VM internal JavaThreads, |
| 4198 // jvmti agent threads, and JNI attaching threads are skipped) | |
| 4199 // See CR 6404306 regarding JNI attaching threads | |
| 4200 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
| 4201 ResourceMark rm(THREAD); | |
| 4202 ThreadsListEnumerator tle(THREAD, false, false); | |
| 4203 JvmtiVMObjectAllocEventCollector oam; | |
| 4204 | |
| 4205 int num_threads = tle.num_threads(); | |
| 1142 | 4206 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
| 0 | 4207 objArrayHandle threads_ah(THREAD, r); |
| 4208 | |
| 4209 for (int i = 0; i < num_threads; i++) { | |
| 4210 Handle h = tle.get_threadObj(i); | |
| 4211 threads_ah->obj_at_put(i, h()); | |
| 4212 } | |
| 4213 | |
| 4214 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
| 4215 JVM_END | |
| 4216 | |
| 4217 | |
| 4218 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
| 4219 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
| 4220 // the corresponding entry in the given threads array | |
| 4221 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
| 4222 JVMWrapper("JVM_DumpThreads"); | |
| 4223 JvmtiVMObjectAllocEventCollector oam; | |
| 4224 | |
| 4225 // Check if threads is null | |
| 4226 if (threads == NULL) { | |
| 4227 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4228 } | |
| 4229 | |
| 4230 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
| 4231 objArrayHandle ah(THREAD, a); | |
| 4232 int num_threads = ah->length(); | |
| 4233 // check if threads is non-empty array | |
| 4234 if (num_threads == 0) { | |
| 4235 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
| 4236 } | |
| 4237 | |
| 4238 // check if threads is not an array of objects of Thread class | |
|
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4239 Klass* k = ObjArrayKlass::cast(ah->klass())->element_klass(); |
| 1142 | 4240 if (k != SystemDictionary::Thread_klass()) { |
| 0 | 4241 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
| 4242 } | |
| 4243 | |
| 4244 ResourceMark rm(THREAD); | |
| 4245 | |
| 4246 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
| 4247 for (int i = 0; i < num_threads; i++) { | |
| 4248 oop thread_obj = ah->obj_at(i); | |
| 4249 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
| 4250 thread_handle_array->append(h); | |
| 4251 } | |
| 4252 | |
| 4253 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
| 4254 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
| 4255 | |
| 4256 JVM_END | |
| 4257 | |
| 4258 // JVM monitoring and management support | |
| 4259 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
| 4260 return Management::get_jmm_interface(version); | |
| 4261 JVM_END | |
| 4262 | |
| 4263 // com.sun.tools.attach.VirtualMachine agent properties support | |
| 4264 // | |
| 4265 // Initialize the agent properties with the properties maintained in the VM | |
| 4266 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
| 4267 JVMWrapper("JVM_InitAgentProperties"); | |
| 4268 ResourceMark rm; | |
| 4269 | |
| 4270 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
| 4271 | |
| 4272 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
| 4273 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
| 4274 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
| 4275 return properties; | |
| 4276 JVM_END | |
| 4277 | |
| 4278 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
| 4279 { | |
| 4280 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
| 4281 JvmtiVMObjectAllocEventCollector oam; | |
| 4282 | |
| 4283 if (ofClass == NULL) { | |
| 4284 return NULL; | |
| 4285 } | |
| 4286 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
| 4287 // Special handling for primitive objects | |
| 4288 if (java_lang_Class::is_primitive(mirror())) { | |
| 4289 return NULL; | |
| 4290 } | |
|
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4291 Klass* k = java_lang_Class::as_Klass(mirror()); |
| 6983 | 4292 if (!k->oop_is_instance()) { |
| 0 | 4293 return NULL; |
| 4294 } | |
| 4295 instanceKlassHandle ik_h(THREAD, k); | |
| 4296 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
| 4297 if (encl_method_class_idx == 0) { | |
| 4298 return NULL; | |
| 4299 } | |
| 1142 | 4300 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
| 0 | 4301 objArrayHandle dest(THREAD, dest_o); |
|
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4302 Klass* enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); |
| 6983 | 4303 dest->obj_at_put(0, enc_k->java_mirror()); |
| 0 | 4304 int encl_method_method_idx = ik_h->enclosing_method_method_index(); |
| 4305 if (encl_method_method_idx != 0) { | |
|
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4306 Symbol* sym = ik_h->constants()->symbol_at( |
| 0 | 4307 extract_low_short_from_int( |
| 4308 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4309 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4310 dest->obj_at_put(1, str()); | |
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4311 sym = ik_h->constants()->symbol_at( |
| 0 | 4312 extract_high_short_from_int( |
| 4313 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4314 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4315 dest->obj_at_put(2, str()); | |
| 4316 } | |
| 4317 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 4318 } | |
| 4319 JVM_END | |
| 4320 | |
| 4321 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
| 4322 jint javaThreadState)) | |
| 4323 { | |
| 4324 // If new thread states are added in future JDK and VM versions, | |
| 4325 // this should check if the JDK version is compatible with thread | |
| 4326 // states supported by the VM. Return NULL if not compatible. | |
| 4327 // | |
| 4328 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4329 // to the Java thread state that the JDK supports. | |
| 4330 // | |
| 4331 | |
| 4332 typeArrayHandle values_h; | |
| 4333 switch (javaThreadState) { | |
| 4334 case JAVA_THREAD_STATE_NEW : { | |
| 4335 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4336 values_h = typeArrayHandle(THREAD, r); | |
| 4337 values_h->int_at_put(0, java_lang_Thread::NEW); | |
| 4338 break; | |
| 4339 } | |
| 4340 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4341 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4342 values_h = typeArrayHandle(THREAD, r); | |
| 4343 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
| 4344 break; | |
| 4345 } | |
| 4346 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4347 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4348 values_h = typeArrayHandle(THREAD, r); | |
| 4349 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
| 4350 break; | |
| 4351 } | |
| 4352 case JAVA_THREAD_STATE_WAITING : { | |
| 4353 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
| 4354 values_h = typeArrayHandle(THREAD, r); | |
| 4355 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
| 4356 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
| 4357 break; | |
| 4358 } | |
| 4359 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4360 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
| 4361 values_h = typeArrayHandle(THREAD, r); | |
| 4362 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
| 4363 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
| 4364 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
| 4365 break; | |
| 4366 } | |
| 4367 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4368 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4369 values_h = typeArrayHandle(THREAD, r); | |
| 4370 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
| 4371 break; | |
| 4372 } | |
| 4373 default: | |
| 4374 // Unknown state - probably incompatible JDK version | |
| 4375 return NULL; | |
| 4376 } | |
| 4377 | |
| 4378 return (jintArray) JNIHandles::make_local(env, values_h()); | |
| 4379 } | |
| 4380 JVM_END | |
| 4381 | |
| 4382 | |
| 4383 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
| 4384 jint javaThreadState, | |
| 4385 jintArray values)) | |
| 4386 { | |
| 4387 // If new thread states are added in future JDK and VM versions, | |
| 4388 // this should check if the JDK version is compatible with thread | |
| 4389 // states supported by the VM. Return NULL if not compatible. | |
| 4390 // | |
| 4391 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4392 // to the Java thread state that the JDK supports. | |
| 4393 // | |
| 4394 | |
| 4395 ResourceMark rm; | |
| 4396 | |
| 4397 // Check if threads is null | |
| 4398 if (values == NULL) { | |
| 4399 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4400 } | |
| 4401 | |
| 4402 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
| 4403 typeArrayHandle values_h(THREAD, v); | |
| 4404 | |
| 4405 objArrayHandle names_h; | |
| 4406 switch (javaThreadState) { | |
| 4407 case JAVA_THREAD_STATE_NEW : { | |
| 4408 assert(values_h->length() == 1 && | |
| 4409 values_h->int_at(0) == java_lang_Thread::NEW, | |
| 4410 "Invalid threadStatus value"); | |
| 4411 | |
| 1142 | 4412 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4413 1, /* only 1 substate */ |
| 4414 CHECK_NULL); | |
| 4415 names_h = objArrayHandle(THREAD, r); | |
| 4416 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
| 4417 names_h->obj_at_put(0, name()); | |
| 4418 break; | |
| 4419 } | |
| 4420 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4421 assert(values_h->length() == 1 && | |
| 4422 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
| 4423 "Invalid threadStatus value"); | |
| 4424 | |
| 1142 | 4425 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4426 1, /* only 1 substate */ |
| 4427 CHECK_NULL); | |
| 4428 names_h = objArrayHandle(THREAD, r); | |
| 4429 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
| 4430 names_h->obj_at_put(0, name()); | |
| 4431 break; | |
| 4432 } | |
| 4433 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4434 assert(values_h->length() == 1 && | |
| 4435 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
| 4436 "Invalid threadStatus value"); | |
| 4437 | |
| 1142 | 4438 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4439 1, /* only 1 substate */ |
| 4440 CHECK_NULL); | |
| 4441 names_h = objArrayHandle(THREAD, r); | |
| 4442 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
| 4443 names_h->obj_at_put(0, name()); | |
| 4444 break; | |
| 4445 } | |
| 4446 case JAVA_THREAD_STATE_WAITING : { | |
| 4447 assert(values_h->length() == 2 && | |
| 4448 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
| 4449 values_h->int_at(1) == java_lang_Thread::PARKED, | |
| 4450 "Invalid threadStatus value"); | |
| 1142 | 4451 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4452 2, /* number of substates */ |
| 4453 CHECK_NULL); | |
| 4454 names_h = objArrayHandle(THREAD, r); | |
| 4455 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
| 4456 CHECK_NULL); | |
| 4457 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
| 4458 CHECK_NULL); | |
| 4459 names_h->obj_at_put(0, name0()); | |
| 4460 names_h->obj_at_put(1, name1()); | |
| 4461 break; | |
| 4462 } | |
| 4463 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4464 assert(values_h->length() == 3 && | |
| 4465 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
| 4466 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
| 4467 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
| 4468 "Invalid threadStatus value"); | |
| 1142 | 4469 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4470 3, /* number of substates */ |
| 4471 CHECK_NULL); | |
| 4472 names_h = objArrayHandle(THREAD, r); | |
| 4473 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
| 4474 CHECK_NULL); | |
| 4475 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
| 4476 CHECK_NULL); | |
| 4477 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
| 4478 CHECK_NULL); | |
| 4479 names_h->obj_at_put(0, name0()); | |
| 4480 names_h->obj_at_put(1, name1()); | |
| 4481 names_h->obj_at_put(2, name2()); | |
| 4482 break; | |
| 4483 } | |
| 4484 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4485 assert(values_h->length() == 1 && | |
| 4486 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
| 4487 "Invalid threadStatus value"); | |
| 1142 | 4488 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4489 1, /* only 1 substate */ |
| 4490 CHECK_NULL); | |
| 4491 names_h = objArrayHandle(THREAD, r); | |
| 4492 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
| 4493 names_h->obj_at_put(0, name()); | |
| 4494 break; | |
| 4495 } | |
| 4496 default: | |
| 4497 // Unknown state - probably incompatible JDK version | |
| 4498 return NULL; | |
| 4499 } | |
| 4500 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
| 4501 } | |
| 4502 JVM_END | |
| 4503 | |
| 4504 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
| 4505 { | |
| 4506 memset(info, 0, sizeof(info_size)); | |
| 4507 | |
| 4508 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
| 4509 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4510 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4511 | |
| 4512 // when we add a new capability in the jvm_version_info struct, we should also | |
| 4513 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
| 4514 // counter defined in runtimeService.cpp. | |
| 4515 info->is_attachable = AttachListener::is_attach_supported(); | |
| 4516 #ifdef KERNEL | |
| 4517 info->is_kernel_jvm = 1; // true; | |
| 4518 #else // KERNEL | |
| 4519 info->is_kernel_jvm = 0; // false; | |
| 4520 #endif // KERNEL | |
| 4521 } | |
| 4522 JVM_END |