Mercurial > hg > graal-compiler
annotate src/share/vm/prims/jvm.cpp @ 20527:8cb56c8cb30d
Merge
| author | jiangli |
|---|---|
| date | Mon, 15 Sep 2014 16:39:00 -0400 |
| parents | 6e0cb14ce59b 1e657b902392 |
| children | 4cb90023bf2b |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2014, 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" | |
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31 #if INCLUDE_CDS |
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32 #include "classfile/sharedClassUtil.hpp" |
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33 #include "classfile/systemDictionaryShared.hpp" |
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34 #endif |
| 1972 | 35 #include "classfile/vmSymbols.hpp" |
| 36 #include "gc_interface/collectedHeap.inline.hpp" | |
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37 #include "interpreter/bytecode.hpp" |
| 1972 | 38 #include "memory/oopFactory.hpp" |
| 39 #include "memory/universe.inline.hpp" | |
| 3938 | 40 #include "oops/fieldStreams.hpp" |
| 1972 | 41 #include "oops/instanceKlass.hpp" |
| 42 #include "oops/objArrayKlass.hpp" | |
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43 #include "oops/method.hpp" |
| 1972 | 44 #include "prims/jvm.h" |
| 45 #include "prims/jvm_misc.hpp" | |
| 46 #include "prims/jvmtiExport.hpp" | |
| 47 #include "prims/jvmtiThreadState.hpp" | |
| 48 #include "prims/nativeLookup.hpp" | |
| 49 #include "prims/privilegedStack.hpp" | |
| 50 #include "runtime/arguments.hpp" | |
| 51 #include "runtime/dtraceJSDT.hpp" | |
| 52 #include "runtime/handles.inline.hpp" | |
| 53 #include "runtime/init.hpp" | |
| 54 #include "runtime/interfaceSupport.hpp" | |
| 55 #include "runtime/java.hpp" | |
| 56 #include "runtime/javaCalls.hpp" | |
| 57 #include "runtime/jfieldIDWorkaround.hpp" | |
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58 #include "runtime/orderAccess.inline.hpp" |
| 1972 | 59 #include "runtime/os.hpp" |
| 60 #include "runtime/perfData.hpp" | |
| 61 #include "runtime/reflection.hpp" | |
| 62 #include "runtime/vframe.hpp" | |
| 63 #include "runtime/vm_operations.hpp" | |
| 64 #include "services/attachListener.hpp" | |
| 65 #include "services/management.hpp" | |
| 66 #include "services/threadService.hpp" | |
| 10405 | 67 #include "trace/tracing.hpp" |
| 1972 | 68 #include "utilities/copy.hpp" |
| 69 #include "utilities/defaultStream.hpp" | |
| 70 #include "utilities/dtrace.hpp" | |
| 71 #include "utilities/events.hpp" | |
| 72 #include "utilities/histogram.hpp" | |
| 73 #include "utilities/top.hpp" | |
| 74 #include "utilities/utf8.hpp" | |
| 75 #ifdef TARGET_OS_FAMILY_linux | |
| 76 # include "jvm_linux.h" | |
| 77 #endif | |
| 78 #ifdef TARGET_OS_FAMILY_solaris | |
| 79 # include "jvm_solaris.h" | |
| 80 #endif | |
| 81 #ifdef TARGET_OS_FAMILY_windows | |
| 82 # include "jvm_windows.h" | |
| 83 #endif | |
| 14411 | 84 #ifdef TARGET_OS_FAMILY_aix |
| 85 # include "jvm_aix.h" | |
| 86 #endif | |
| 3960 | 87 #ifdef TARGET_OS_FAMILY_bsd |
| 88 # include "jvm_bsd.h" | |
| 89 #endif | |
| 1972 | 90 |
| 0 | 91 #include <errno.h> |
| 92 | |
| 4006 | 93 #ifndef USDT2 |
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94 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__begin, long long); |
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95 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__end, int); |
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96 HS_DTRACE_PROBE_DECL0(hotspot, thread__yield); |
| 4006 | 97 #endif /* !USDT2 */ |
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98 |
| 0 | 99 /* |
| 100 NOTE about use of any ctor or function call that can trigger a safepoint/GC: | |
| 101 such ctors and calls MUST NOT come between an oop declaration/init and its | |
| 102 usage because if objects are move this may cause various memory stomps, bus | |
| 103 errors and segfaults. Here is a cookbook for causing so called "naked oop | |
| 104 failures": | |
| 105 | |
| 106 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> { | |
| 107 JVMWrapper("JVM_GetClassDeclaredFields"); | |
| 108 | |
| 109 // Object address to be held directly in mirror & not visible to GC | |
| 110 oop mirror = JNIHandles::resolve_non_null(ofClass); | |
| 111 | |
| 112 // If this ctor can hit a safepoint, moving objects around, then | |
| 113 ComplexConstructor foo; | |
| 114 | |
| 115 // Boom! mirror may point to JUNK instead of the intended object | |
| 116 (some dereference of mirror) | |
| 117 | |
| 118 // Here's another call that may block for GC, making mirror stale | |
| 119 MutexLocker ml(some_lock); | |
| 120 | |
| 121 // And here's an initializer that can result in a stale oop | |
| 122 // all in one step. | |
| 123 oop o = call_that_can_throw_exception(TRAPS); | |
| 124 | |
| 125 | |
| 126 The solution is to keep the oop declaration BELOW the ctor or function | |
| 127 call that might cause a GC, do another resolve to reassign the oop, or | |
| 128 consider use of a Handle instead of an oop so there is immunity from object | |
| 129 motion. But note that the "QUICK" entries below do not have a handlemark | |
| 130 and thus can only support use of handles passed in. | |
| 131 */ | |
| 132 | |
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133 static void trace_class_resolution_impl(Klass* to_class, TRAPS) { |
| 0 | 134 ResourceMark rm; |
| 135 int line_number = -1; | |
| 136 const char * source_file = NULL; | |
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137 const char * trace = "explicit"; |
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138 InstanceKlass* caller = NULL; |
| 0 | 139 JavaThread* jthread = JavaThread::current(); |
| 140 if (jthread->has_last_Java_frame()) { | |
| 141 vframeStream vfst(jthread); | |
| 142 | |
| 143 // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames | |
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144 TempNewSymbol access_controller = SymbolTable::new_symbol("java/security/AccessController", CHECK); |
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145 Klass* access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); |
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146 TempNewSymbol privileged_action = SymbolTable::new_symbol("java/security/PrivilegedAction", CHECK); |
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147 Klass* privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); |
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148 |
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149 Method* last_caller = NULL; |
| 0 | 150 |
| 151 while (!vfst.at_end()) { | |
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152 Method* m = vfst.method(); |
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153 if (!vfst.method()->method_holder()->is_subclass_of(SystemDictionary::ClassLoader_klass())&& |
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154 !vfst.method()->method_holder()->is_subclass_of(access_controller_klass) && |
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155 !vfst.method()->method_holder()->is_subclass_of(privileged_action_klass)) { |
| 0 | 156 break; |
| 157 } | |
| 158 last_caller = m; | |
| 159 vfst.next(); | |
| 160 } | |
| 161 // if this is called from Class.forName0 and that is called from Class.forName, | |
| 162 // then print the caller of Class.forName. If this is Class.loadClass, then print | |
| 163 // that caller, otherwise keep quiet since this should be picked up elsewhere. | |
| 164 bool found_it = false; | |
| 165 if (!vfst.at_end() && | |
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166 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
| 0 | 167 vfst.method()->name() == vmSymbols::forName0_name()) { |
| 168 vfst.next(); | |
| 169 if (!vfst.at_end() && | |
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170 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
| 0 | 171 vfst.method()->name() == vmSymbols::forName_name()) { |
| 172 vfst.next(); | |
| 173 found_it = true; | |
| 174 } | |
| 175 } else if (last_caller != NULL && | |
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176 last_caller->method_holder()->name() == |
| 0 | 177 vmSymbols::java_lang_ClassLoader() && |
| 178 (last_caller->name() == vmSymbols::loadClassInternal_name() || | |
| 179 last_caller->name() == vmSymbols::loadClass_name())) { | |
| 180 found_it = true; | |
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181 } else if (!vfst.at_end()) { |
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182 if (vfst.method()->is_native()) { |
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183 // JNI call |
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184 found_it = true; |
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185 } |
| 0 | 186 } |
| 187 if (found_it && !vfst.at_end()) { | |
| 188 // found the caller | |
| 189 caller = vfst.method()->method_holder(); | |
| 190 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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191 if (line_number == -1) { |
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192 // show method name if it's a native method |
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193 trace = vfst.method()->name_and_sig_as_C_string(); |
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194 } |
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195 Symbol* s = caller->source_file_name(); |
| 0 | 196 if (s != NULL) { |
| 197 source_file = s->as_C_string(); | |
| 198 } | |
| 199 } | |
| 200 } | |
| 201 if (caller != NULL) { | |
| 202 if (to_class != caller) { | |
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203 const char * from = caller->external_name(); |
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204 const char * to = to_class->external_name(); |
| 0 | 205 // print in a single call to reduce interleaving between threads |
| 206 if (source_file != NULL) { | |
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207 tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace); |
| 0 | 208 } else { |
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209 tty->print("RESOLVE %s %s (%s)\n", from, to, trace); |
| 0 | 210 } |
| 211 } | |
| 212 } | |
| 213 } | |
| 214 | |
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215 void trace_class_resolution(Klass* to_class) { |
| 0 | 216 EXCEPTION_MARK; |
| 217 trace_class_resolution_impl(to_class, THREAD); | |
| 218 if (HAS_PENDING_EXCEPTION) { | |
| 219 CLEAR_PENDING_EXCEPTION; | |
| 220 } | |
| 221 } | |
| 222 | |
| 223 // Wrapper to trace JVM functions | |
| 224 | |
| 225 #ifdef ASSERT | |
| 226 class JVMTraceWrapper : public StackObj { | |
| 227 public: | |
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228 JVMTraceWrapper(const char* format, ...) ATTRIBUTE_PRINTF(2, 3) { |
| 0 | 229 if (TraceJVMCalls) { |
| 230 va_list ap; | |
| 231 va_start(ap, format); | |
| 232 tty->print("JVM "); | |
| 233 tty->vprint_cr(format, ap); | |
| 234 va_end(ap); | |
| 235 } | |
| 236 } | |
| 237 }; | |
| 238 | |
| 239 Histogram* JVMHistogram; | |
| 240 volatile jint JVMHistogram_lock = 0; | |
| 241 | |
| 242 class JVMHistogramElement : public HistogramElement { | |
| 243 public: | |
| 244 JVMHistogramElement(const char* name); | |
| 245 }; | |
| 246 | |
| 247 JVMHistogramElement::JVMHistogramElement(const char* elementName) { | |
| 248 _name = elementName; | |
| 249 uintx count = 0; | |
| 250 | |
| 251 while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) { | |
| 252 while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) { | |
| 253 count +=1; | |
| 254 if ( (WarnOnStalledSpinLock > 0) | |
| 255 && (count % WarnOnStalledSpinLock == 0)) { | |
| 256 warning("JVMHistogram_lock seems to be stalled"); | |
| 257 } | |
| 258 } | |
| 259 } | |
| 260 | |
| 261 if(JVMHistogram == NULL) | |
| 262 JVMHistogram = new Histogram("JVM Call Counts",100); | |
| 263 | |
| 264 JVMHistogram->add_element(this); | |
| 265 Atomic::dec(&JVMHistogram_lock); | |
| 266 } | |
| 267 | |
| 268 #define JVMCountWrapper(arg) \ | |
| 269 static JVMHistogramElement* e = new JVMHistogramElement(arg); \ | |
| 270 if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen! | |
| 271 | |
| 272 #define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) | |
| 273 #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) | |
| 274 #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) | |
| 275 #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) | |
| 276 #else | |
| 277 #define JVMWrapper(arg1) | |
| 278 #define JVMWrapper2(arg1, arg2) | |
| 279 #define JVMWrapper3(arg1, arg2, arg3) | |
| 280 #define JVMWrapper4(arg1, arg2, arg3, arg4) | |
| 281 #endif | |
| 282 | |
| 283 | |
| 284 // Interface version ///////////////////////////////////////////////////////////////////// | |
| 285 | |
| 286 | |
| 287 JVM_LEAF(jint, JVM_GetInterfaceVersion()) | |
| 288 return JVM_INTERFACE_VERSION; | |
| 289 JVM_END | |
| 290 | |
| 291 | |
| 292 // java.lang.System ////////////////////////////////////////////////////////////////////// | |
| 293 | |
| 294 | |
| 295 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored)) | |
| 296 JVMWrapper("JVM_CurrentTimeMillis"); | |
| 297 return os::javaTimeMillis(); | |
| 298 JVM_END | |
| 299 | |
| 300 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored)) | |
| 301 JVMWrapper("JVM_NanoTime"); | |
| 302 return os::javaTimeNanos(); | |
| 303 JVM_END | |
| 304 | |
| 305 | |
| 306 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, | |
| 307 jobject dst, jint dst_pos, jint length)) | |
| 308 JVMWrapper("JVM_ArrayCopy"); | |
| 309 // Check if we have null pointers | |
| 310 if (src == NULL || dst == NULL) { | |
| 311 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 312 } | |
| 313 arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); | |
| 314 arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); | |
| 315 assert(s->is_oop(), "JVM_ArrayCopy: src not an oop"); | |
| 316 assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); | |
| 317 // Do copy | |
| 6983 | 318 s->klass()->copy_array(s, src_pos, d, dst_pos, length, thread); |
| 0 | 319 JVM_END |
| 320 | |
| 321 | |
| 322 static void set_property(Handle props, const char* key, const char* value, TRAPS) { | |
| 323 JavaValue r(T_OBJECT); | |
| 324 // public synchronized Object put(Object key, Object value); | |
| 325 HandleMark hm(THREAD); | |
| 326 Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK); | |
| 327 Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK); | |
| 328 JavaCalls::call_virtual(&r, | |
| 329 props, | |
| 1142 | 330 KlassHandle(THREAD, SystemDictionary::Properties_klass()), |
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331 vmSymbols::put_name(), |
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332 vmSymbols::object_object_object_signature(), |
| 0 | 333 key_str, |
| 334 value_str, | |
| 335 THREAD); | |
| 336 } | |
| 337 | |
| 338 | |
| 339 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties)); | |
| 340 | |
| 341 | |
| 342 JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties)) | |
| 343 JVMWrapper("JVM_InitProperties"); | |
| 344 ResourceMark rm; | |
| 345 | |
| 346 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
| 347 | |
| 348 // System property list includes both user set via -D option and | |
| 349 // jvm system specific properties. | |
| 350 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
| 351 PUTPROP(props, p->key(), p->value()); | |
| 352 } | |
| 353 | |
| 354 // Convert the -XX:MaxDirectMemorySize= command line flag | |
| 355 // to the sun.nio.MaxDirectMemorySize property. | |
| 356 // Do this after setting user properties to prevent people | |
| 357 // from setting the value with a -D option, as requested. | |
| 358 { | |
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359 if (FLAG_IS_DEFAULT(MaxDirectMemorySize)) { |
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360 PUTPROP(props, "sun.nio.MaxDirectMemorySize", "-1"); |
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361 } else { |
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362 char as_chars[256]; |
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363 jio_snprintf(as_chars, sizeof(as_chars), UINTX_FORMAT, MaxDirectMemorySize); |
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364 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); |
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365 } |
| 0 | 366 } |
| 367 | |
| 368 // JVM monitoring and management support | |
| 369 // Add the sun.management.compiler property for the compiler's name | |
| 370 { | |
| 371 #undef CSIZE | |
| 372 #if defined(_LP64) || defined(_WIN64) | |
| 373 #define CSIZE "64-Bit " | |
| 374 #else | |
| 375 #define CSIZE | |
| 376 #endif // 64bit | |
| 377 | |
| 378 #ifdef TIERED | |
| 379 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; | |
| 380 #else | |
| 381 #if defined(COMPILER1) | |
| 382 const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; | |
| 383 #elif defined(COMPILER2) | |
| 384 const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; | |
| 385 #else | |
| 386 const char* compiler_name = ""; | |
| 387 #endif // compilers | |
| 388 #endif // TIERED | |
| 389 | |
| 390 if (*compiler_name != '\0' && | |
| 391 (Arguments::mode() != Arguments::_int)) { | |
| 392 PUTPROP(props, "sun.management.compiler", compiler_name); | |
| 393 } | |
| 394 } | |
| 395 | |
| 396 return properties; | |
| 397 JVM_END | |
| 398 | |
| 399 | |
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400 /* |
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401 * Return the temporary directory that the VM uses for the attach |
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402 * and perf data files. |
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403 * |
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404 * It is important that this directory is well-known and the |
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405 * same for all VM instances. It cannot be affected by configuration |
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406 * variables such as java.io.tmpdir. |
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407 */ |
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408 JVM_ENTRY(jstring, JVM_GetTemporaryDirectory(JNIEnv *env)) |
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409 JVMWrapper("JVM_GetTemporaryDirectory"); |
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410 HandleMark hm(THREAD); |
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411 const char* temp_dir = os::get_temp_directory(); |
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412 Handle h = java_lang_String::create_from_platform_dependent_str(temp_dir, CHECK_NULL); |
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413 return (jstring) JNIHandles::make_local(env, h()); |
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414 JVM_END |
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415 |
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416 |
| 0 | 417 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// |
| 418 | |
| 419 extern volatile jint vm_created; | |
| 420 | |
| 421 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
| 422 if (vm_created != 0 && (code == 0)) { | |
| 423 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
| 424 Universe::run_finalizers_on_exit(); | |
| 425 } | |
| 426 before_exit(thread); | |
| 427 vm_exit(code); | |
| 428 JVM_END | |
| 429 | |
| 430 | |
| 431 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
| 432 before_exit(thread); | |
| 433 vm_exit(code); | |
| 434 JVM_END | |
| 435 | |
| 436 | |
| 437 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
| 438 register_on_exit_function(func); | |
| 439 JVM_END | |
| 440 | |
| 441 | |
| 442 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
| 443 JVMWrapper("JVM_GC"); | |
| 444 if (!DisableExplicitGC) { | |
| 445 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
| 446 } | |
| 447 JVM_END | |
| 448 | |
| 449 | |
| 450 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
| 451 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
| 452 return Universe::heap()->millis_since_last_gc(); | |
| 453 JVM_END | |
| 454 | |
| 455 | |
| 456 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
| 457 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
| 458 JVM_END | |
| 459 | |
| 460 | |
| 461 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
| 462 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
| 463 JVM_END | |
| 464 | |
| 465 static inline jlong convert_size_t_to_jlong(size_t val) { | |
| 466 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
| 467 NOT_LP64 (return (jlong)val;) | |
| 468 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
| 469 } | |
| 470 | |
| 471 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
| 472 JVMWrapper("JVM_TotalMemory"); | |
| 473 size_t n = Universe::heap()->capacity(); | |
| 474 return convert_size_t_to_jlong(n); | |
| 475 JVM_END | |
| 476 | |
| 477 | |
| 478 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
| 479 JVMWrapper("JVM_FreeMemory"); | |
| 480 CollectedHeap* ch = Universe::heap(); | |
|
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481 size_t n; |
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482 { |
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483 MutexLocker x(Heap_lock); |
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484 n = ch->capacity() - ch->used(); |
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485 } |
| 0 | 486 return convert_size_t_to_jlong(n); |
| 487 JVM_END | |
| 488 | |
| 489 | |
| 490 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
| 491 JVMWrapper("JVM_MaxMemory"); | |
| 492 size_t n = Universe::heap()->max_capacity(); | |
| 493 return convert_size_t_to_jlong(n); | |
| 494 JVM_END | |
| 495 | |
| 496 | |
| 497 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
| 498 JVMWrapper("JVM_ActiveProcessorCount"); | |
| 499 return os::active_processor_count(); | |
| 500 JVM_END | |
| 501 | |
| 502 | |
| 503 | |
| 504 // java.lang.Throwable ////////////////////////////////////////////////////// | |
| 505 | |
| 506 | |
| 507 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
| 508 JVMWrapper("JVM_FillInStackTrace"); | |
| 509 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
| 510 java_lang_Throwable::fill_in_stack_trace(exception); | |
| 511 JVM_END | |
| 512 | |
| 513 | |
| 514 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
| 515 JVMWrapper("JVM_GetStackTraceDepth"); | |
| 516 oop exception = JNIHandles::resolve(throwable); | |
| 517 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
| 518 JVM_END | |
| 519 | |
| 520 | |
| 521 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
| 522 JVMWrapper("JVM_GetStackTraceElement"); | |
| 523 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
| 524 oop exception = JNIHandles::resolve(throwable); | |
| 525 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
| 526 return JNIHandles::make_local(env, element); | |
| 527 JVM_END | |
| 528 | |
| 529 | |
| 530 // java.lang.Object /////////////////////////////////////////////// | |
| 531 | |
| 532 | |
| 533 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
| 534 JVMWrapper("JVM_IHashCode"); | |
| 535 // as implemented in the classic virtual machine; return 0 if object is NULL | |
| 536 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
| 537 JVM_END | |
| 538 | |
| 539 | |
| 540 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
| 541 JVMWrapper("JVM_MonitorWait"); | |
| 542 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 543 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
| 544 if (JvmtiExport::should_post_monitor_wait()) { | |
| 545 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
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546 |
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547 // The current thread already owns the monitor and it has not yet |
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548 // been added to the wait queue so the current thread cannot be |
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549 // made the successor. This means that the JVMTI_EVENT_MONITOR_WAIT |
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550 // event handler cannot accidentally consume an unpark() meant for |
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551 // the ParkEvent associated with this ObjectMonitor. |
| 0 | 552 } |
| 553 ObjectSynchronizer::wait(obj, ms, CHECK); | |
| 554 JVM_END | |
| 555 | |
| 556 | |
| 557 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
| 558 JVMWrapper("JVM_MonitorNotify"); | |
| 559 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 560 ObjectSynchronizer::notify(obj, CHECK); | |
| 561 JVM_END | |
| 562 | |
| 563 | |
| 564 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
| 565 JVMWrapper("JVM_MonitorNotifyAll"); | |
| 566 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 567 ObjectSynchronizer::notifyall(obj, CHECK); | |
| 568 JVM_END | |
| 569 | |
| 570 | |
| 571 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
| 572 JVMWrapper("JVM_Clone"); | |
| 573 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 574 const KlassHandle klass (THREAD, obj->klass()); | |
| 575 JvmtiVMObjectAllocEventCollector oam; | |
| 576 | |
| 577 #ifdef ASSERT | |
| 578 // Just checking that the cloneable flag is set correct | |
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579 if (obj->is_array()) { |
| 0 | 580 guarantee(klass->is_cloneable(), "all arrays are cloneable"); |
| 581 } else { | |
| 582 guarantee(obj->is_instance(), "should be instanceOop"); | |
| 1142 | 583 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
| 0 | 584 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
| 585 } | |
| 586 #endif | |
| 587 | |
| 588 // Check if class of obj supports the Cloneable interface. | |
| 589 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
| 590 if (!klass->is_cloneable()) { | |
| 591 ResourceMark rm(THREAD); | |
| 592 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
| 593 } | |
| 594 | |
| 595 // Make shallow object copy | |
| 596 const int size = obj->size(); | |
| 597 oop new_obj = NULL; | |
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598 if (obj->is_array()) { |
| 0 | 599 const int length = ((arrayOop)obj())->length(); |
| 600 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
| 601 } else { | |
| 602 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
| 603 } | |
| 604 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
| 605 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
| 606 // be suspended in the middle of copying the pointer and end up with parts | |
| 607 // of two different pointers in the field. Subsequent dereferences will crash. | |
| 608 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
| 609 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
| 610 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
| 611 // The same is true of StubRoutines::object_copy and the various oop_copy | |
| 612 // variants, and of the code generated by the inline_native_clone intrinsic. | |
| 613 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
| 614 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
| 615 (size_t)align_object_size(size) / HeapWordsPerLong); | |
| 616 // Clear the header | |
| 617 new_obj->init_mark(); | |
| 618 | |
| 619 // Store check (mark entire object and let gc sort it out) | |
| 620 BarrierSet* bs = Universe::heap()->barrier_set(); | |
| 621 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
| 622 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
| 623 | |
| 624 // Caution: this involves a java upcall, so the clone should be | |
| 625 // "gc-robust" by this stage. | |
| 626 if (klass->has_finalizer()) { | |
| 627 assert(obj->is_instance(), "should be instanceOop"); | |
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628 new_obj = InstanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); |
| 0 | 629 } |
| 630 | |
| 631 return JNIHandles::make_local(env, oop(new_obj)); | |
| 632 JVM_END | |
| 633 | |
| 634 // java.lang.Compiler //////////////////////////////////////////////////// | |
| 635 | |
| 636 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
| 637 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
| 638 // functions are all silently ignored unless JVM warnings are printed. | |
| 639 | |
| 640 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
| 641 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
| 642 JVM_END | |
| 643 | |
| 644 | |
| 645 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
| 646 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
| 647 return JNI_FALSE; | |
| 648 JVM_END | |
| 649 | |
| 650 | |
| 651 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
| 652 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
| 653 return JNI_FALSE; | |
| 654 JVM_END | |
| 655 | |
| 656 | |
| 657 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
| 658 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
| 659 return JNI_FALSE; | |
| 660 JVM_END | |
| 661 | |
| 662 | |
| 663 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
| 664 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
| 665 return NULL; | |
| 666 JVM_END | |
| 667 | |
| 668 | |
| 669 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
| 670 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
| 671 JVM_END | |
| 672 | |
| 673 | |
| 674 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
| 675 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
| 676 JVM_END | |
| 677 | |
| 678 | |
| 679 | |
| 680 // Error message support ////////////////////////////////////////////////////// | |
| 681 | |
| 682 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
| 683 JVMWrapper("JVM_GetLastErrorString"); | |
|
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684 return (jint)os::lasterror(buf, len); |
| 0 | 685 JVM_END |
| 686 | |
| 687 | |
| 688 // java.io.File /////////////////////////////////////////////////////////////// | |
| 689 | |
| 690 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
| 691 JVMWrapper2("JVM_NativePath (%s)", path); | |
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692 return os::native_path(path); |
| 0 | 693 JVM_END |
| 694 | |
| 695 | |
| 696 // Misc. class handling /////////////////////////////////////////////////////////// | |
| 697 | |
| 698 | |
| 699 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
| 700 JVMWrapper("JVM_GetCallerClass"); | |
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701 |
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702 // Pre-JDK 8 and early builds of JDK 8 don't have a CallerSensitive annotation; or |
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703 // sun.reflect.Reflection.getCallerClass with a depth parameter is provided |
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704 // temporarily for existing code to use until a replacement API is defined. |
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705 if (SystemDictionary::reflect_CallerSensitive_klass() == NULL || depth != JVM_CALLER_DEPTH) { |
|
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706 Klass* k = thread->security_get_caller_class(depth); |
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707 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, k->java_mirror()); |
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708 } |
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|
709 |
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710 // Getting the class of the caller frame. |
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711 // |
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712 // The call stack at this point looks something like this: |
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713 // |
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714 // [0] [ @CallerSensitive public sun.reflect.Reflection.getCallerClass ] |
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715 // [1] [ @CallerSensitive API.method ] |
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716 // [.] [ (skipped intermediate frames) ] |
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717 // [n] [ caller ] |
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718 vframeStream vfst(thread); |
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719 // Cf. LibraryCallKit::inline_native_Reflection_getCallerClass |
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720 for (int n = 0; !vfst.at_end(); vfst.security_next(), n++) { |
|
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721 Method* m = vfst.method(); |
|
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722 assert(m != NULL, "sanity"); |
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723 switch (n) { |
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724 case 0: |
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725 // This must only be called from Reflection.getCallerClass |
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726 if (m->intrinsic_id() != vmIntrinsics::_getCallerClass) { |
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727 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetCallerClass must only be called from Reflection.getCallerClass"); |
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728 } |
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|
729 // fall-through |
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730 case 1: |
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731 // Frame 0 and 1 must be caller sensitive. |
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732 if (!m->caller_sensitive()) { |
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733 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), err_msg("CallerSensitive annotation expected at frame %d", n)); |
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734 } |
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735 break; |
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|
736 default: |
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737 if (!m->is_ignored_by_security_stack_walk()) { |
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738 // We have reached the desired frame; return the holder class. |
|
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739 return (jclass) JNIHandles::make_local(env, m->method_holder()->java_mirror()); |
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740 } |
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|
741 break; |
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|
742 } |
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|
743 } |
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744 return NULL; |
| 0 | 745 JVM_END |
| 746 | |
| 747 | |
| 748 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
| 749 JVMWrapper("JVM_FindPrimitiveClass"); | |
| 750 oop mirror = NULL; | |
| 751 BasicType t = name2type(utf); | |
| 752 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
| 753 mirror = Universe::java_mirror(t); | |
| 754 } | |
| 755 if (mirror == NULL) { | |
| 756 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
| 757 } else { | |
| 758 return (jclass) JNIHandles::make_local(env, mirror); | |
| 759 } | |
| 760 JVM_END | |
| 761 | |
| 762 | |
| 763 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
| 764 JVMWrapper("JVM_ResolveClass"); | |
| 765 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
| 766 JVM_END | |
| 767 | |
|
878
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|
768 |
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769 // Returns a class loaded by the bootstrap class loader; or null |
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770 // if not found. ClassNotFoundException is not thrown. |
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771 // |
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|
772 // Rationale behind JVM_FindClassFromBootLoader |
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773 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
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774 // b> because of (a) java.dll has a direct dependecy on the unexported |
|
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775 // private symbol "_JVM_FindClassFromClassLoader@20". |
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776 // c> the launcher cannot use the private symbol as it dynamically opens |
|
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777 // the entry point, so if something changes, the launcher will fail |
|
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778 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
|
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779 // stable exported interface. |
|
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780 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
|
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781 // signature to change from _JVM_FindClassFromClassLoader@20 to |
|
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782 // JVM_FindClassFromClassLoader and will not be backward compatible |
|
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|
783 // with older JDKs. |
|
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784 // Thus a public/stable exported entry point is the right solution, |
|
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785 // public here means public in linker semantics, and is exported only |
|
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786 // to the JDK, and is not intended to be a public API. |
|
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|
787 |
|
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|
788 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
|
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|
789 const char* name)) |
|
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|
790 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
|
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|
791 |
|
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|
792 // Java libraries should ensure that name is never null... |
|
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793 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
|
878
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794 // It's impossible to create this class; the name cannot fit |
|
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|
795 // into the constant pool. |
|
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|
796 return NULL; |
|
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|
797 } |
|
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|
798 |
|
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|
799 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
|
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800 Klass* k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
|
878
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801 if (k == NULL) { |
|
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|
802 return NULL; |
|
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|
803 } |
|
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|
804 |
|
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|
805 if (TraceClassResolution) { |
|
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806 trace_class_resolution(k); |
|
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|
807 } |
| 6983 | 808 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
|
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|
809 JVM_END |
|
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|
810 |
| 18051 | 811 // Not used; JVM_FindClassFromCaller replaces this. |
|
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|
812 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
|
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|
813 jboolean init, jobject loader, |
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814 jboolean throwError)) |
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815 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
|
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|
816 throwError ? "error" : "exception"); |
| 388 | 817 // Java libraries should ensure that name is never null... |
|
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818 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
| 388 | 819 // It's impossible to create this class; the name cannot fit |
| 820 // into the constant pool. | |
| 821 if (throwError) { | |
| 822 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 823 } else { | |
| 824 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
| 825 } | |
| 826 } | |
|
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827 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
| 388 | 828 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
| 829 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 830 Handle(), throwError, THREAD); | |
| 831 | |
| 832 if (TraceClassResolution && result != NULL) { | |
|
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833 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
| 388 | 834 } |
| 835 return result; | |
| 0 | 836 JVM_END |
| 837 | |
| 18051 | 838 // Find a class with this name in this loader, using the caller's protection domain. |
| 839 JVM_ENTRY(jclass, JVM_FindClassFromCaller(JNIEnv* env, const char* name, | |
| 840 jboolean init, jobject loader, | |
| 841 jclass caller)) | |
| 842 JVMWrapper2("JVM_FindClassFromCaller %s throws ClassNotFoundException", name); | |
| 843 // Java libraries should ensure that name is never null... | |
| 844 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { | |
| 845 // It's impossible to create this class; the name cannot fit | |
| 846 // into the constant pool. | |
| 847 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
| 848 } | |
| 849 | |
| 850 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); | |
| 851 | |
| 852 oop loader_oop = JNIHandles::resolve(loader); | |
| 853 oop from_class = JNIHandles::resolve(caller); | |
| 854 oop protection_domain = NULL; | |
| 855 // If loader is null, shouldn't call ClassLoader.checkPackageAccess; otherwise get | |
| 856 // NPE. Put it in another way, the bootstrap class loader has all permission and | |
| 857 // thus no checkPackageAccess equivalence in the VM class loader. | |
| 858 // The caller is also passed as NULL by the java code if there is no security | |
| 859 // manager to avoid the performance cost of getting the calling class. | |
| 860 if (from_class != NULL && loader_oop != NULL) { | |
| 861 protection_domain = java_lang_Class::as_Klass(from_class)->protection_domain(); | |
| 862 } | |
| 863 | |
| 864 Handle h_loader(THREAD, loader_oop); | |
| 865 Handle h_prot(THREAD, protection_domain); | |
| 866 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 867 h_prot, false, THREAD); | |
| 868 | |
| 869 if (TraceClassResolution && result != NULL) { | |
| 870 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); | |
| 871 } | |
| 872 return result; | |
| 873 JVM_END | |
| 0 | 874 |
| 875 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
| 876 jboolean init, jclass from)) | |
| 877 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
|
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878 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
| 0 | 879 // It's impossible to create this class; the name cannot fit |
| 880 // into the constant pool. | |
| 881 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 882 } | |
|
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|
883 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
| 0 | 884 oop from_class_oop = JNIHandles::resolve(from); |
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885 Klass* from_class = (from_class_oop == NULL) |
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886 ? (Klass*)NULL |
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887 : java_lang_Class::as_Klass(from_class_oop); |
| 0 | 888 oop class_loader = NULL; |
| 889 oop protection_domain = NULL; | |
| 890 if (from_class != NULL) { | |
| 6983 | 891 class_loader = from_class->class_loader(); |
| 892 protection_domain = from_class->protection_domain(); | |
| 0 | 893 } |
| 894 Handle h_loader(THREAD, class_loader); | |
| 895 Handle h_prot (THREAD, protection_domain); | |
| 896 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 897 h_prot, true, thread); | |
| 898 | |
| 899 if (TraceClassResolution && result != NULL) { | |
| 900 // this function is generally only used for class loading during verification. | |
| 901 ResourceMark rm; | |
| 902 oop from_mirror = JNIHandles::resolve_non_null(from); | |
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903 Klass* from_class = java_lang_Class::as_Klass(from_mirror); |
| 6983 | 904 const char * from_name = from_class->external_name(); |
| 0 | 905 |
| 906 oop mirror = JNIHandles::resolve_non_null(result); | |
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907 Klass* to_class = java_lang_Class::as_Klass(mirror); |
| 6983 | 908 const char * to = to_class->external_name(); |
| 0 | 909 tty->print("RESOLVE %s %s (verification)\n", from_name, to); |
| 910 } | |
| 911 | |
| 912 return result; | |
| 913 JVM_END | |
| 914 | |
| 915 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
| 916 if (loader.is_null()) { | |
| 917 return; | |
| 918 } | |
| 919 | |
| 920 // check whether the current caller thread holds the lock or not. | |
| 921 // If not, increment the corresponding counter | |
| 922 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
| 923 ObjectSynchronizer::owner_self) { | |
| 924 counter->inc(); | |
| 925 } | |
| 926 } | |
| 927 | |
| 928 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
|
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929 // and JVM_DefineClassWithSourceCond() |
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930 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
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931 jobject loader, const jbyte *buf, |
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932 jsize len, jobject pd, const char *source, |
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933 jboolean verify, TRAPS) { |
|
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934 if (source == NULL) source = "__JVM_DefineClass__"; |
| 0 | 935 |
|
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936 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
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937 JavaThread* jt = (JavaThread*) THREAD; |
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938 |
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939 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
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940 ClassLoader::perf_define_appclass_selftime(), |
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941 ClassLoader::perf_define_appclasses(), |
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942 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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943 jt->get_thread_stat()->perf_timers_addr(), |
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944 PerfClassTraceTime::DEFINE_CLASS); |
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945 |
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946 if (UsePerfData) { |
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947 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
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948 } |
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949 |
| 0 | 950 // Since exceptions can be thrown, class initialization can take place |
| 951 // if name is NULL no check for class name in .class stream has to be made. | |
|
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952 TempNewSymbol class_name = NULL; |
| 0 | 953 if (name != NULL) { |
| 954 const int str_len = (int)strlen(name); | |
|
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955 if (str_len > Symbol::max_length()) { |
| 0 | 956 // It's impossible to create this class; the name cannot fit |
| 957 // into the constant pool. | |
| 958 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 959 } | |
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960 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
| 0 | 961 } |
| 962 | |
| 963 ResourceMark rm(THREAD); | |
| 964 ClassFileStream st((u1*) buf, len, (char *)source); | |
| 965 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
| 966 if (UsePerfData) { | |
| 967 is_lock_held_by_thread(class_loader, | |
| 968 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
| 969 THREAD); | |
| 970 } | |
| 971 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
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972 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, |
| 0 | 973 protection_domain, &st, |
|
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974 verify != 0, |
| 0 | 975 CHECK_NULL); |
| 976 | |
| 977 if (TraceClassResolution && k != NULL) { | |
| 978 trace_class_resolution(k); | |
| 979 } | |
| 980 | |
| 6983 | 981 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
| 0 | 982 } |
| 983 | |
| 984 | |
| 985 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
| 986 JVMWrapper2("JVM_DefineClass %s", name); | |
| 987 | |
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988 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
| 0 | 989 JVM_END |
| 990 | |
| 991 | |
| 992 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
| 993 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
| 994 | |
|
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995 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
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996 JVM_END |
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997 |
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998 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
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999 jobject loader, const jbyte *buf, |
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1000 jsize len, jobject pd, |
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1001 const char *source, jboolean verify)) |
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1002 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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1003 |
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1004 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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1005 JVM_END |
| 0 | 1006 |
| 1007 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
| 1008 JVMWrapper("JVM_FindLoadedClass"); | |
| 1009 ResourceMark rm(THREAD); | |
| 1010 | |
| 1011 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 1012 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
| 1013 | |
| 1014 const char* str = java_lang_String::as_utf8_string(string()); | |
| 1015 // Sanity check, don't expect null | |
| 1016 if (str == NULL) return NULL; | |
| 1017 | |
| 1018 const int str_len = (int)strlen(str); | |
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1019 if (str_len > Symbol::max_length()) { |
| 0 | 1020 // It's impossible to create this class; the name cannot fit |
| 1021 // into the constant pool. | |
| 1022 return NULL; | |
| 1023 } | |
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1024 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
| 0 | 1025 |
| 1026 // Security Note: | |
| 1027 // The Java level wrapper will perform the necessary security check allowing | |
| 1028 // us to pass the NULL as the initiating class loader. | |
| 1029 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
| 1030 if (UsePerfData) { | |
| 1031 is_lock_held_by_thread(h_loader, | |
| 1032 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
| 1033 THREAD); | |
| 1034 } | |
| 1035 | |
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1036 Klass* k = SystemDictionary::find_instance_or_array_klass(klass_name, |
| 0 | 1037 h_loader, |
| 1038 Handle(), | |
| 1039 CHECK_NULL); | |
|
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1040 #if INCLUDE_CDS |
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1041 if (k == NULL) { |
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1042 // If the class is not already loaded, try to see if it's in the shared |
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1043 // archive for the current classloader (h_loader). |
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1044 instanceKlassHandle ik = SystemDictionaryShared::find_or_load_shared_class( |
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1045 klass_name, h_loader, CHECK_NULL); |
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1046 k = ik(); |
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1047 } |
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1048 #endif |
| 0 | 1049 return (k == NULL) ? NULL : |
| 6983 | 1050 (jclass) JNIHandles::make_local(env, k->java_mirror()); |
| 0 | 1051 JVM_END |
| 1052 | |
| 1053 | |
| 1054 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
| 1055 | |
| 1056 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
| 1057 assert (cls != NULL, "illegal class"); | |
| 1058 JVMWrapper("JVM_GetClassName"); | |
| 1059 JvmtiVMObjectAllocEventCollector oam; | |
| 1060 ResourceMark rm(THREAD); | |
| 1061 const char* name; | |
| 1062 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1063 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
| 1064 } else { | |
| 1065 // Consider caching interned string in Klass | |
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1066 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 0 | 1067 assert(k->is_klass(), "just checking"); |
| 6983 | 1068 name = k->external_name(); |
| 0 | 1069 } |
| 1070 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
| 1071 return (jstring) JNIHandles::make_local(env, result); | |
| 1072 JVM_END | |
| 1073 | |
| 1074 | |
| 1075 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
| 1076 JVMWrapper("JVM_GetClassInterfaces"); | |
| 1077 JvmtiVMObjectAllocEventCollector oam; | |
| 1078 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1079 | |
| 1080 // Special handling for primitive objects | |
| 1081 if (java_lang_Class::is_primitive(mirror)) { | |
| 1082 // Primitive objects does not have any interfaces | |
| 1142 | 1083 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1084 return (jobjectArray) JNIHandles::make_local(env, r); |
| 1085 } | |
| 1086 | |
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1087 KlassHandle klass(thread, java_lang_Class::as_Klass(mirror)); |
| 0 | 1088 // Figure size of result array |
| 1089 int size; | |
| 1090 if (klass->oop_is_instance()) { | |
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1091 size = InstanceKlass::cast(klass())->local_interfaces()->length(); |
| 0 | 1092 } else { |
| 1093 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
| 1094 size = 2; | |
| 1095 } | |
| 1096 | |
| 1097 // Allocate result array | |
| 1142 | 1098 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
| 0 | 1099 objArrayHandle result (THREAD, r); |
| 1100 // Fill in result | |
| 1101 if (klass->oop_is_instance()) { | |
| 1102 // Regular instance klass, fill in all local interfaces | |
| 1103 for (int index = 0; index < size; index++) { | |
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1104 Klass* k = InstanceKlass::cast(klass())->local_interfaces()->at(index); |
| 6983 | 1105 result->obj_at_put(index, k->java_mirror()); |
| 0 | 1106 } |
| 1107 } else { | |
| 1108 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
| 6983 | 1109 result->obj_at_put(0, SystemDictionary::Cloneable_klass()->java_mirror()); |
| 1110 result->obj_at_put(1, SystemDictionary::Serializable_klass()->java_mirror()); | |
| 0 | 1111 } |
| 1112 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1113 JVM_END | |
| 1114 | |
| 1115 | |
| 1116 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
| 1117 JVMWrapper("JVM_GetClassLoader"); | |
| 1118 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1119 return NULL; | |
| 1120 } | |
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1121 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1122 oop loader = k->class_loader(); |
| 0 | 1123 return JNIHandles::make_local(env, loader); |
| 1124 JVM_END | |
| 1125 | |
| 1126 | |
| 1127 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
| 1128 JVMWrapper("JVM_IsInterface"); | |
| 1129 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1130 if (java_lang_Class::is_primitive(mirror)) { | |
| 1131 return JNI_FALSE; | |
| 1132 } | |
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1133 Klass* k = java_lang_Class::as_Klass(mirror); |
| 6983 | 1134 jboolean result = k->is_interface(); |
| 1135 assert(!result || k->oop_is_instance(), | |
| 0 | 1136 "all interfaces are instance types"); |
| 1137 // The compiler intrinsic for isInterface tests the | |
| 1138 // Klass::_access_flags bits in the same way. | |
| 1139 return result; | |
| 1140 JVM_END | |
| 1141 | |
| 1142 | |
| 1143 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
| 1144 JVMWrapper("JVM_GetClassSigners"); | |
| 1145 JvmtiVMObjectAllocEventCollector oam; | |
| 1146 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1147 // There are no signers for primitive types | |
| 1148 return NULL; | |
| 1149 } | |
| 1150 | |
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1151 objArrayOop signers = java_lang_Class::signers(JNIHandles::resolve_non_null(cls)); |
| 0 | 1152 |
| 1153 // If there are no signers set in the class, or if the class | |
| 1154 // is an array, return NULL. | |
| 1155 if (signers == NULL) return NULL; | |
| 1156 | |
| 1157 // copy of the signers array | |
|
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1158 Klass* element = ObjArrayKlass::cast(signers->klass())->element_klass(); |
| 0 | 1159 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); |
| 1160 for (int index = 0; index < signers->length(); index++) { | |
| 1161 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
| 1162 } | |
| 1163 | |
| 1164 // return the copy | |
| 1165 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
| 1166 JVM_END | |
| 1167 | |
| 1168 | |
| 1169 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
| 1170 JVMWrapper("JVM_SetClassSigners"); | |
| 1171 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1172 // This call is ignored for primitive types and arrays. | |
| 1173 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
| 1174 // be called with an array. Only the bootstrap loader creates arrays. | |
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1175 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1176 if (k->oop_is_instance()) { |
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1177 java_lang_Class::set_signers(k->java_mirror(), objArrayOop(JNIHandles::resolve(signers))); |
| 0 | 1178 } |
| 1179 } | |
| 1180 JVM_END | |
| 1181 | |
| 1182 | |
| 1183 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
| 1184 JVMWrapper("JVM_GetProtectionDomain"); | |
| 1185 if (JNIHandles::resolve(cls) == NULL) { | |
| 1186 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
| 1187 } | |
| 1188 | |
| 1189 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1190 // Primitive types does not have a protection domain. | |
| 1191 return NULL; | |
| 1192 } | |
| 1193 | |
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1194 oop pd = java_lang_Class::protection_domain(JNIHandles::resolve(cls)); |
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1195 return (jobject) JNIHandles::make_local(env, pd); |
| 0 | 1196 JVM_END |
| 1197 | |
| 1198 | |
| 11010 | 1199 static bool is_authorized(Handle context, instanceKlassHandle klass, TRAPS) { |
| 1200 // If there is a security manager and protection domain, check the access | |
| 1201 // in the protection domain, otherwise it is authorized. | |
| 1202 if (java_lang_System::has_security_manager()) { | |
| 1203 | |
| 1204 // For bootstrapping, if pd implies method isn't in the JDK, allow | |
| 1205 // this context to revert to older behavior. | |
| 1206 // In this case the isAuthorized field in AccessControlContext is also not | |
| 1207 // present. | |
| 1208 if (Universe::protection_domain_implies_method() == NULL) { | |
| 1209 return true; | |
| 1210 } | |
| 1211 | |
| 1212 // Whitelist certain access control contexts | |
| 1213 if (java_security_AccessControlContext::is_authorized(context)) { | |
| 1214 return true; | |
| 1215 } | |
| 1216 | |
| 1217 oop prot = klass->protection_domain(); | |
| 1218 if (prot != NULL) { | |
| 1219 // Call pd.implies(new SecurityPermission("createAccessControlContext")) | |
| 1220 // in the new wrapper. | |
| 1221 methodHandle m(THREAD, Universe::protection_domain_implies_method()); | |
| 1222 Handle h_prot(THREAD, prot); | |
| 1223 JavaValue result(T_BOOLEAN); | |
| 1224 JavaCallArguments args(h_prot); | |
| 1225 JavaCalls::call(&result, m, &args, CHECK_false); | |
| 1226 return (result.get_jboolean() != 0); | |
| 1227 } | |
| 1228 } | |
| 1229 return true; | |
| 1230 } | |
| 1231 | |
| 1232 // Create an AccessControlContext with a protection domain with null codesource | |
| 1233 // and null permissions - which gives no permissions. | |
| 1234 oop create_dummy_access_control_context(TRAPS) { | |
| 1235 InstanceKlass* pd_klass = InstanceKlass::cast(SystemDictionary::ProtectionDomain_klass()); | |
| 1236 // new ProtectionDomain(null,null); | |
| 1237 oop null_protection_domain = pd_klass->allocate_instance(CHECK_NULL); | |
| 1238 Handle null_pd(THREAD, null_protection_domain); | |
| 1239 | |
| 1240 // new ProtectionDomain[] {pd}; | |
| 1241 objArrayOop context = oopFactory::new_objArray(pd_klass, 1, CHECK_NULL); | |
| 1242 context->obj_at_put(0, null_pd()); | |
| 1243 | |
| 1244 // new AccessControlContext(new ProtectionDomain[] {pd}) | |
| 1245 objArrayHandle h_context(THREAD, context); | |
| 1246 oop result = java_security_AccessControlContext::create(h_context, false, Handle(), CHECK_NULL); | |
| 1247 return result; | |
| 1248 } | |
| 0 | 1249 |
| 1250 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
| 1251 JVMWrapper("JVM_DoPrivileged"); | |
| 1252 | |
| 1253 if (action == NULL) { | |
| 1254 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
| 1255 } | |
| 1256 | |
| 11010 | 1257 // Compute the frame initiating the do privileged operation and setup the privileged stack |
| 1258 vframeStream vfst(thread); | |
| 1259 vfst.security_get_caller_frame(1); | |
| 1260 | |
| 1261 if (vfst.at_end()) { | |
| 1262 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "no caller?"); | |
| 1263 } | |
| 1264 | |
| 1265 Method* method = vfst.method(); | |
| 1266 instanceKlassHandle klass (THREAD, method->method_holder()); | |
| 1267 | |
| 1268 // Check that action object understands "Object run()" | |
| 1269 Handle h_context; | |
| 1270 if (context != NULL) { | |
| 1271 h_context = Handle(THREAD, JNIHandles::resolve(context)); | |
| 1272 bool authorized = is_authorized(h_context, klass, CHECK_NULL); | |
| 1273 if (!authorized) { | |
| 1274 // Create an unprivileged access control object and call it's run function | |
| 1275 // instead. | |
| 1276 oop noprivs = create_dummy_access_control_context(CHECK_NULL); | |
| 1277 h_context = Handle(THREAD, noprivs); | |
| 1278 } | |
| 1279 } | |
| 0 | 1280 |
| 1281 // Check that action object understands "Object run()" | |
| 1282 Handle object (THREAD, JNIHandles::resolve(action)); | |
| 1283 | |
| 1284 // get run() method | |
| 6983 | 1285 Method* m_oop = object->klass()->uncached_lookup_method( |
| 0 | 1286 vmSymbols::run_method_name(), |
|
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1287 vmSymbols::void_object_signature(), |
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1288 Klass::normal); |
| 0 | 1289 methodHandle m (THREAD, m_oop); |
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1290 if (m.is_null() || !m->is_method() || !m()->is_public() || m()->is_static()) { |
| 0 | 1291 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); |
| 1292 } | |
| 1293 | |
| 11010 | 1294 // Stack allocated list of privileged stack elements |
| 1295 PrivilegedElement pi; | |
| 0 | 1296 if (!vfst.at_end()) { |
| 11010 | 1297 pi.initialize(&vfst, h_context(), thread->privileged_stack_top(), CHECK_NULL); |
| 0 | 1298 thread->set_privileged_stack_top(&pi); |
| 1299 } | |
| 1300 | |
| 1301 | |
| 1302 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
| 1303 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
| 1304 Handle pending_exception; | |
| 1305 JavaValue result(T_OBJECT); | |
| 1306 JavaCallArguments args(object); | |
| 1307 JavaCalls::call(&result, m, &args, THREAD); | |
| 1308 | |
| 1309 // done with action, remove ourselves from the list | |
| 1310 if (!vfst.at_end()) { | |
| 1311 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
| 1312 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
| 1313 } | |
| 1314 | |
| 1315 if (HAS_PENDING_EXCEPTION) { | |
| 1316 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
| 1317 CLEAR_PENDING_EXCEPTION; | |
| 1318 | |
| 1142 | 1319 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
| 1320 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
| 0 | 1321 // Throw a java.security.PrivilegedActionException(Exception e) exception |
| 1322 JavaCallArguments args(pending_exception); | |
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1323 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1324 vmSymbols::exception_void_signature(), |
| 0 | 1325 &args); |
| 1326 } | |
| 1327 } | |
| 1328 | |
| 1329 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
| 1330 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
| 1331 JVM_END | |
| 1332 | |
| 1333 | |
| 1334 // Returns the inherited_access_control_context field of the running thread. | |
| 1335 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1336 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
| 1337 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
| 1338 return JNIHandles::make_local(env, result); | |
| 1339 JVM_END | |
| 1340 | |
| 1341 class RegisterArrayForGC { | |
| 1342 private: | |
| 1343 JavaThread *_thread; | |
| 1344 public: | |
| 1345 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
| 1346 _thread = thread; | |
| 1347 _thread->register_array_for_gc(array); | |
| 1348 } | |
| 1349 | |
| 1350 ~RegisterArrayForGC() { | |
| 1351 _thread->register_array_for_gc(NULL); | |
| 1352 } | |
| 1353 }; | |
| 1354 | |
| 1355 | |
| 1356 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1357 JVMWrapper("JVM_GetStackAccessControlContext"); | |
| 1358 if (!UsePrivilegedStack) return NULL; | |
| 1359 | |
| 1360 ResourceMark rm(THREAD); | |
| 1361 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
| 1362 JvmtiVMObjectAllocEventCollector oam; | |
| 1363 | |
| 1364 // count the protection domains on the execution stack. We collapse | |
| 1365 // duplicate consecutive protection domains into a single one, as | |
| 1366 // well as stopping when we hit a privileged frame. | |
| 1367 | |
| 1368 // Use vframeStream to iterate through Java frames | |
| 1369 vframeStream vfst(thread); | |
| 1370 | |
| 1371 oop previous_protection_domain = NULL; | |
| 1372 Handle privileged_context(thread, NULL); | |
| 1373 bool is_privileged = false; | |
| 1374 oop protection_domain = NULL; | |
| 1375 | |
| 1376 for(; !vfst.at_end(); vfst.next()) { | |
| 1377 // get method of frame | |
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1378 Method* method = vfst.method(); |
| 0 | 1379 intptr_t* frame_id = vfst.frame_id(); |
| 1380 | |
| 1381 // check the privileged frames to see if we have a match | |
| 1382 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
| 1383 // this frame is privileged | |
| 1384 is_privileged = true; | |
| 1385 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
| 1386 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
| 1387 } else { | |
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1388 protection_domain = method->method_holder()->protection_domain(); |
| 0 | 1389 } |
| 1390 | |
| 1391 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
| 1392 local_array->push(protection_domain); | |
| 1393 previous_protection_domain = protection_domain; | |
| 1394 } | |
| 1395 | |
| 1396 if (is_privileged) break; | |
| 1397 } | |
| 1398 | |
| 1399 | |
| 1400 // either all the domains on the stack were system domains, or | |
| 1401 // we had a privileged system domain | |
| 1402 if (local_array->is_empty()) { | |
| 1403 if (is_privileged && privileged_context.is_null()) return NULL; | |
| 1404 | |
| 1405 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
| 1406 return JNIHandles::make_local(env, result); | |
| 1407 } | |
| 1408 | |
| 1409 // the resource area must be registered in case of a gc | |
| 1410 RegisterArrayForGC ragc(thread, local_array); | |
| 1142 | 1411 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
| 0 | 1412 local_array->length(), CHECK_NULL); |
| 1413 objArrayHandle h_context(thread, context); | |
| 1414 for (int index = 0; index < local_array->length(); index++) { | |
| 1415 h_context->obj_at_put(index, local_array->at(index)); | |
| 1416 } | |
| 1417 | |
| 1418 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
| 1419 | |
| 1420 return JNIHandles::make_local(env, result); | |
| 1421 JVM_END | |
| 1422 | |
| 1423 | |
| 1424 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
| 1425 JVMWrapper("JVM_IsArrayClass"); | |
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1426 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1427 return (k != NULL) && k->oop_is_array() ? true : false; |
| 0 | 1428 JVM_END |
| 1429 | |
| 1430 | |
| 1431 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
| 1432 JVMWrapper("JVM_IsPrimitiveClass"); | |
| 1433 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1434 return (jboolean) java_lang_Class::is_primitive(mirror); | |
| 1435 JVM_END | |
| 1436 | |
| 1437 | |
| 1438 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
| 1439 JVMWrapper("JVM_GetComponentType"); | |
| 1440 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1441 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
| 1442 return (jclass) JNIHandles::make_local(env, result); | |
| 1443 JVM_END | |
| 1444 | |
| 1445 | |
| 1446 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
| 1447 JVMWrapper("JVM_GetClassModifiers"); | |
| 1448 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1449 // Primitive type | |
| 1450 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 1451 } | |
| 1452 | |
| 6983 | 1453 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 1454 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); |
| 1455 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
| 1456 return k->modifier_flags(); | |
| 1457 JVM_END | |
| 1458 | |
| 1459 | |
| 1460 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
| 1461 | |
| 1462 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
| 1463 JvmtiVMObjectAllocEventCollector oam; | |
| 1464 // ofClass is a reference to a java_lang_Class object. The mirror object | |
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1465 // of an InstanceKlass |
| 0 | 1466 |
| 1467 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1468 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
| 1142 | 1469 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1470 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1471 } | |
| 1472 | |
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1473 instanceKlassHandle k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
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1474 InnerClassesIterator iter(k); |
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1475 |
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1476 if (iter.length() == 0) { |
| 0 | 1477 // Neither an inner nor outer class |
| 1142 | 1478 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1479 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1480 } | |
| 1481 | |
| 1482 // find inner class info | |
| 1483 constantPoolHandle cp(thread, k->constants()); | |
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1484 int length = iter.length(); |
| 0 | 1485 |
| 1486 // Allocate temp. result array | |
| 1142 | 1487 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
| 0 | 1488 objArrayHandle result (THREAD, r); |
| 1489 int members = 0; | |
| 1490 | |
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1491 for (; !iter.done(); iter.next()) { |
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1492 int ioff = iter.inner_class_info_index(); |
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1493 int ooff = iter.outer_class_info_index(); |
| 0 | 1494 |
| 1495 if (ioff != 0 && ooff != 0) { | |
| 1496 // Check to see if the name matches the class we're looking for | |
| 1497 // before attempting to find the class. | |
| 1498 if (cp->klass_name_at_matches(k, ooff)) { | |
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1499 Klass* outer_klass = cp->klass_at(ooff, CHECK_NULL); |
| 0 | 1500 if (outer_klass == k()) { |
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1501 Klass* ik = cp->klass_at(ioff, CHECK_NULL); |
| 0 | 1502 instanceKlassHandle inner_klass (THREAD, ik); |
| 1503 | |
| 1504 // Throws an exception if outer klass has not declared k as | |
| 1505 // an inner klass | |
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1506 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
| 0 | 1507 |
| 1508 result->obj_at_put(members, inner_klass->java_mirror()); | |
| 1509 members++; | |
| 1510 } | |
| 1511 } | |
| 1512 } | |
| 1513 } | |
| 1514 | |
| 1515 if (members != length) { | |
| 1516 // Return array of right length | |
| 1142 | 1517 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
| 0 | 1518 for(int i = 0; i < members; i++) { |
| 1519 res->obj_at_put(i, result->obj_at(i)); | |
| 1520 } | |
| 1521 return (jobjectArray)JNIHandles::make_local(env, res); | |
| 1522 } | |
| 1523 | |
| 1524 return (jobjectArray)JNIHandles::make_local(env, result()); | |
| 1525 JVM_END | |
| 1526 | |
| 1527 | |
| 1528 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
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1529 { |
| 0 | 1530 // ofClass is a reference to a java_lang_Class object. |
| 1531 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1532 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
| 0 | 1533 return NULL; |
| 1534 } | |
| 1535 | |
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1536 bool inner_is_member = false; |
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1537 Klass* outer_klass |
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1538 = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)) |
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1539 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
|
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1540 if (outer_klass == NULL) return NULL; // already a top-level class |
|
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1541 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
| 6983 | 1542 return (jclass) JNIHandles::make_local(env, outer_klass->java_mirror()); |
|
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1543 } |
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1544 JVM_END |
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1545 |
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1546 // should be in InstanceKlass.cpp, but is here for historical reasons |
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1547 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
|
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1548 bool* inner_is_member, |
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1549 TRAPS) { |
|
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1550 Thread* thread = THREAD; |
|
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|
1551 InnerClassesIterator iter(k); |
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1552 if (iter.length() == 0) { |
| 0 | 1553 // No inner class info => no declaring class |
| 1554 return NULL; | |
| 1555 } | |
| 1556 | |
| 1557 constantPoolHandle i_cp(thread, k->constants()); | |
| 1558 | |
| 1559 bool found = false; | |
|
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1560 Klass* ok; |
| 0 | 1561 instanceKlassHandle outer_klass; |
|
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1562 *inner_is_member = false; |
| 0 | 1563 |
| 1564 // Find inner_klass attribute | |
|
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1565 for (; !iter.done() && !found; iter.next()) { |
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1566 int ioff = iter.inner_class_info_index(); |
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1567 int ooff = iter.outer_class_info_index(); |
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1568 int noff = iter.inner_name_index(); |
|
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|
1569 if (ioff != 0) { |
| 0 | 1570 // Check to see if the name matches the class we're looking for |
| 1571 // before attempting to find the class. | |
| 1572 if (i_cp->klass_name_at_matches(k, ioff)) { | |
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1573 Klass* inner_klass = i_cp->klass_at(ioff, CHECK_NULL); |
|
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1574 found = (k() == inner_klass); |
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1575 if (found && ooff != 0) { |
| 0 | 1576 ok = i_cp->klass_at(ooff, CHECK_NULL); |
| 1577 outer_klass = instanceKlassHandle(thread, ok); | |
|
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1578 *inner_is_member = true; |
| 0 | 1579 } |
| 1580 } | |
| 1581 } | |
| 1582 } | |
| 1583 | |
|
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1584 if (found && outer_klass.is_null()) { |
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1585 // It may be anonymous; try for that. |
|
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|
1586 int encl_method_class_idx = k->enclosing_method_class_index(); |
|
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|
1587 if (encl_method_class_idx != 0) { |
|
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|
1588 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
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|
1589 outer_klass = instanceKlassHandle(thread, ok); |
|
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|
1590 *inner_is_member = false; |
|
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|
1591 } |
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|
1592 } |
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1593 |
| 0 | 1594 // If no inner class attribute found for this class. |
|
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|
1595 if (outer_klass.is_null()) return NULL; |
| 0 | 1596 |
| 1597 // Throws an exception if outer klass has not declared k as an inner klass | |
|
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1598 // We need evidence that each klass knows about the other, or else |
|
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1599 // the system could allow a spoof of an inner class to gain access rights. |
|
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1600 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
|
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1601 return outer_klass(); |
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1602 } |
| 0 | 1603 |
| 1604 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
| 1605 assert (cls != NULL, "illegal class"); | |
| 1606 JVMWrapper("JVM_GetClassSignature"); | |
| 1607 JvmtiVMObjectAllocEventCollector oam; | |
| 1608 ResourceMark rm(THREAD); | |
| 1609 // Return null for arrays and primatives | |
| 1610 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
|
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1611 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 6983 | 1612 if (k->oop_is_instance()) { |
|
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1613 Symbol* sym = InstanceKlass::cast(k)->generic_signature(); |
|
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1614 if (sym == NULL) return NULL; |
| 0 | 1615 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 1616 return (jstring) JNIHandles::make_local(env, str()); | |
| 1617 } | |
| 1618 } | |
| 1619 return NULL; | |
| 1620 JVM_END | |
| 1621 | |
| 1622 | |
| 1623 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
| 1624 assert (cls != NULL, "illegal class"); | |
| 1625 JVMWrapper("JVM_GetClassAnnotations"); | |
|
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1626 |
| 0 | 1627 // Return null for arrays and primitives |
| 1628 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
|
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1629 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 6983 | 1630 if (k->oop_is_instance()) { |
|
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1631 typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->class_annotations(), CHECK_NULL); |
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1632 return (jbyteArray) JNIHandles::make_local(env, a); |
| 0 | 1633 } |
| 1634 } | |
| 1635 return NULL; | |
| 1636 JVM_END | |
| 1637 | |
| 1638 | |
|
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1639 static bool jvm_get_field_common(jobject field, fieldDescriptor& fd, TRAPS) { |
| 0 | 1640 // some of this code was adapted from from jni_FromReflectedField |
| 1641 | |
| 1642 oop reflected = JNIHandles::resolve_non_null(field); | |
| 1643 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
|
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1644 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 1645 int slot = java_lang_reflect_Field::slot(reflected); |
| 1646 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
| 1647 | |
| 1648 KlassHandle kh(THREAD, k); | |
|
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|
1649 intptr_t offset = InstanceKlass::cast(kh())->field_offset(slot); |
| 0 | 1650 |
| 1651 if (modifiers & JVM_ACC_STATIC) { | |
| 1652 // for static fields we only look in the current class | |
|
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1653 if (!InstanceKlass::cast(kh())->find_local_field_from_offset(offset, true, &fd)) { |
| 0 | 1654 assert(false, "cannot find static field"); |
|
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|
1655 return false; |
| 0 | 1656 } |
| 1657 } else { | |
| 1658 // for instance fields we start with the current class and work | |
| 1659 // our way up through the superclass chain | |
|
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1660 if (!InstanceKlass::cast(kh())->find_field_from_offset(offset, false, &fd)) { |
| 0 | 1661 assert(false, "cannot find instance field"); |
|
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|
1662 return false; |
| 0 | 1663 } |
| 1664 } | |
|
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|
1665 return true; |
|
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|
1666 } |
|
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|
1667 |
|
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|
1668 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) |
|
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|
1669 // field is a handle to a java.lang.reflect.Field object |
|
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|
1670 assert(field != NULL, "illegal field"); |
|
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|
1671 JVMWrapper("JVM_GetFieldAnnotations"); |
|
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|
1672 |
|
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|
1673 fieldDescriptor fd; |
|
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|
1674 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
|
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|
1675 if (!gotFd) { |
|
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|
1676 return NULL; |
|
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|
1677 } |
| 0 | 1678 |
|
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1679 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.annotations(), THREAD)); |
| 0 | 1680 JVM_END |
| 1681 | |
| 1682 | |
|
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|
1683 static Method* jvm_get_method_common(jobject method) { |
| 0 | 1684 // some of this code was adapted from from jni_FromReflectedMethod |
| 1685 | |
| 1686 oop reflected = JNIHandles::resolve_non_null(method); | |
| 1687 oop mirror = NULL; | |
| 1688 int slot = 0; | |
| 1689 | |
| 1142 | 1690 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
| 0 | 1691 mirror = java_lang_reflect_Constructor::clazz(reflected); |
| 1692 slot = java_lang_reflect_Constructor::slot(reflected); | |
| 1693 } else { | |
| 1142 | 1694 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
| 0 | 1695 "wrong type"); |
| 1696 mirror = java_lang_reflect_Method::clazz(reflected); | |
| 1697 slot = java_lang_reflect_Method::slot(reflected); | |
| 1698 } | |
|
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1699 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 1700 |
|
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1701 Method* m = InstanceKlass::cast(k)->method_with_idnum(slot); |
|
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|
1702 assert(m != NULL, "cannot find method"); |
|
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|
1703 return m; // caller has to deal with NULL in product mode |
| 0 | 1704 } |
| 1705 | |
| 1706 | |
| 1707 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
| 1708 JVMWrapper("JVM_GetMethodAnnotations"); | |
| 1709 | |
| 1710 // method is a handle to a java.lang.reflect.Method object | |
|
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|
1711 Method* m = jvm_get_method_common(method); |
|
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|
1712 if (m == NULL) { |
|
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|
1713 return NULL; |
|
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|
1714 } |
|
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|
1715 |
|
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1716 return (jbyteArray) JNIHandles::make_local(env, |
|
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1717 Annotations::make_java_array(m->annotations(), THREAD)); |
| 0 | 1718 JVM_END |
| 1719 | |
| 1720 | |
| 1721 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
| 1722 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
| 1723 | |
| 1724 // method is a handle to a java.lang.reflect.Method object | |
|
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1725 Method* m = jvm_get_method_common(method); |
|
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|
1726 if (m == NULL) { |
|
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|
1727 return NULL; |
|
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|
1728 } |
|
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|
1729 |
|
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1730 return (jbyteArray) JNIHandles::make_local(env, |
|
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1731 Annotations::make_java_array(m->annotation_default(), THREAD)); |
| 0 | 1732 JVM_END |
| 1733 | |
| 1734 | |
| 1735 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
| 1736 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
| 1737 | |
| 1738 // method is a handle to a java.lang.reflect.Method object | |
|
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1739 Method* m = jvm_get_method_common(method); |
|
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|
1740 if (m == NULL) { |
|
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|
1741 return NULL; |
|
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diff
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|
1742 } |
|
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|
1743 |
|
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|
1744 return (jbyteArray) JNIHandles::make_local(env, |
|
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1745 Annotations::make_java_array(m->parameter_annotations(), THREAD)); |
| 0 | 1746 JVM_END |
| 1747 | |
|
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|
1748 /* Type use annotations support (JDK 1.8) */ |
|
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|
1749 |
|
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|
1750 JVM_ENTRY(jbyteArray, JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls)) |
|
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|
1751 assert (cls != NULL, "illegal class"); |
|
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|
1752 JVMWrapper("JVM_GetClassTypeAnnotations"); |
|
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|
1753 ResourceMark rm(THREAD); |
|
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|
1754 // Return null for arrays and primitives |
|
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|
1755 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
|
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|
1756 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
|
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|
1757 if (k->oop_is_instance()) { |
| 8031 | 1758 AnnotationArray* type_annotations = InstanceKlass::cast(k)->class_type_annotations(); |
|
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|
1759 if (type_annotations != NULL) { |
| 8031 | 1760 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
|
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|
1761 return (jbyteArray) JNIHandles::make_local(env, a); |
|
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|
1762 } |
|
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|
1763 } |
|
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|
1764 } |
|
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|
1765 return NULL; |
|
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|
1766 JVM_END |
|
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|
1767 |
|
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|
1768 JVM_ENTRY(jbyteArray, JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method)) |
|
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|
1769 assert (method != NULL, "illegal method"); |
|
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|
1770 JVMWrapper("JVM_GetMethodTypeAnnotations"); |
|
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|
1771 |
|
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|
1772 // method is a handle to a java.lang.reflect.Method object |
|
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|
1773 Method* m = jvm_get_method_common(method); |
|
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|
1774 if (m == NULL) { |
|
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|
1775 return NULL; |
|
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|
1776 } |
|
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|
1777 |
|
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|
1778 AnnotationArray* type_annotations = m->type_annotations(); |
|
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|
1779 if (type_annotations != NULL) { |
|
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|
1780 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
|
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|
1781 return (jbyteArray) JNIHandles::make_local(env, a); |
|
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|
1782 } |
|
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|
1783 |
|
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|
1784 return NULL; |
|
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|
1785 JVM_END |
|
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|
1786 |
|
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|
1787 JVM_ENTRY(jbyteArray, JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field)) |
|
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|
1788 assert (field != NULL, "illegal field"); |
|
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|
1789 JVMWrapper("JVM_GetFieldTypeAnnotations"); |
|
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|
1790 |
|
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|
1791 fieldDescriptor fd; |
|
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|
1792 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
|
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|
1793 if (!gotFd) { |
|
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|
1794 return NULL; |
|
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|
1795 } |
|
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|
1796 |
|
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|
1797 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.type_annotations(), THREAD)); |
|
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|
1798 JVM_END |
|
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|
1799 |
|
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|
1800 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { |
|
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1801 if (!cp->is_within_bounds(index)) { |
|
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1802 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); |
|
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|
1803 } |
|
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|
1804 } |
|
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1805 |
|
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|
1806 JVM_ENTRY(jobjectArray, JVM_GetMethodParameters(JNIEnv *env, jobject method)) |
|
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|
1807 { |
|
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|
1808 JVMWrapper("JVM_GetMethodParameters"); |
|
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|
1809 // method is a handle to a java.lang.reflect.Method object |
|
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|
1810 Method* method_ptr = jvm_get_method_common(method); |
|
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|
1811 methodHandle mh (THREAD, method_ptr); |
|
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|
1812 Handle reflected_method (THREAD, JNIHandles::resolve_non_null(method)); |
|
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|
1813 const int num_params = mh->method_parameters_length(); |
|
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|
1814 |
|
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|
1815 if (0 != num_params) { |
|
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|
1816 // make sure all the symbols are properly formatted |
|
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|
1817 for (int i = 0; i < num_params; i++) { |
|
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|
1818 MethodParametersElement* params = mh->method_parameters_start(); |
|
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|
1819 int index = params[i].name_cp_index; |
|
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|
1820 bounds_check(mh->constants(), index, CHECK_NULL); |
|
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|
1821 |
|
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|
1822 if (0 != index && !mh->constants()->tag_at(index).is_utf8()) { |
|
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|
1823 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), |
|
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|
1824 "Wrong type at constant pool index"); |
|
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|
1825 } |
|
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|
1826 |
|
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|
1827 } |
|
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|
1828 |
|
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|
1829 objArrayOop result_oop = oopFactory::new_objArray(SystemDictionary::reflect_Parameter_klass(), num_params, CHECK_NULL); |
|
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|
1830 objArrayHandle result (THREAD, result_oop); |
|
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|
1831 |
|
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|
1832 for (int i = 0; i < num_params; i++) { |
|
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|
1833 MethodParametersElement* params = mh->method_parameters_start(); |
|
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|
1834 // For a 0 index, give a NULL symbol |
|
10265
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8003557: NPG: Klass* const k should be const Klass* k.
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|
1835 Symbol* sym = 0 != params[i].name_cp_index ? |
|
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|
1836 mh->constants()->symbol_at(params[i].name_cp_index) : NULL; |
|
7983
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|
1837 int flags = params[i].flags; |
|
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|
1838 oop param = Reflection::new_parameter(reflected_method, i, sym, |
|
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|
1839 flags, CHECK_NULL); |
|
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|
1840 result->obj_at_put(i, param); |
|
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|
1841 } |
|
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|
1842 return (jobjectArray)JNIHandles::make_local(env, result()); |
|
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|
1843 } else { |
|
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|
1844 return (jobjectArray)NULL; |
|
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|
1845 } |
|
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|
1846 } |
|
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|
1847 JVM_END |
| 0 | 1848 |
| 1849 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
| 1850 | |
| 1851 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1852 { | |
| 1853 JVMWrapper("JVM_GetClassDeclaredFields"); | |
| 1854 JvmtiVMObjectAllocEventCollector oam; | |
| 1855 | |
| 1856 // Exclude primitive types and array types | |
| 1857 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1858 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
| 0 | 1859 // Return empty array |
| 1142 | 1860 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
| 0 | 1861 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1862 } | |
| 1863 | |
|
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1864 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
| 0 | 1865 constantPoolHandle cp(THREAD, k->constants()); |
| 1866 | |
| 1867 // Ensure class is linked | |
| 1868 k->link_class(CHECK_NULL); | |
| 1869 | |
| 1870 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
| 1871 bool skip_backtrace = false; | |
| 1872 | |
| 1873 // Allocate result | |
| 1874 int num_fields; | |
| 1875 | |
| 1876 if (publicOnly) { | |
| 1877 num_fields = 0; | |
| 3938 | 1878 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
| 1879 if (fs.access_flags().is_public()) ++num_fields; | |
| 0 | 1880 } |
| 1881 } else { | |
| 3938 | 1882 num_fields = k->java_fields_count(); |
| 0 | 1883 |
| 1142 | 1884 if (k() == SystemDictionary::Throwable_klass()) { |
| 0 | 1885 num_fields--; |
| 1886 skip_backtrace = true; | |
| 1887 } | |
| 1888 } | |
| 1889 | |
| 1142 | 1890 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
| 0 | 1891 objArrayHandle result (THREAD, r); |
| 1892 | |
| 1893 int out_idx = 0; | |
| 1894 fieldDescriptor fd; | |
| 3938 | 1895 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
| 0 | 1896 if (skip_backtrace) { |
| 1897 // 4496456 skip java.lang.Throwable.backtrace | |
| 3938 | 1898 int offset = fs.offset(); |
| 0 | 1899 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
| 1900 } | |
| 1901 | |
| 3938 | 1902 if (!publicOnly || fs.access_flags().is_public()) { |
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1903 fd.reinitialize(k(), fs.index()); |
| 0 | 1904 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
| 1905 result->obj_at_put(out_idx, field); | |
| 1906 ++out_idx; | |
| 1907 } | |
| 1908 } | |
| 1909 assert(out_idx == num_fields, "just checking"); | |
| 1910 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1911 } | |
| 1912 JVM_END | |
| 1913 | |
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1914 static bool select_method(methodHandle method, bool want_constructor) { |
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1915 if (want_constructor) { |
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1916 return (method->is_initializer() && !method->is_static()); |
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1917 } else { |
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1918 return (!method->is_initializer() && !method->is_overpass()); |
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1919 } |
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1920 } |
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1921 |
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1922 static jobjectArray get_class_declared_methods_helper( |
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1923 JNIEnv *env, |
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1924 jclass ofClass, jboolean publicOnly, |
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1925 bool want_constructor, |
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1926 Klass* klass, TRAPS) { |
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1927 |
| 0 | 1928 JvmtiVMObjectAllocEventCollector oam; |
| 1929 | |
| 1930 // Exclude primitive types and array types | |
| 1931 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
| 6983 | 1932 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
| 0 | 1933 // Return empty array |
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1934 oop res = oopFactory::new_objArray(klass, 0, CHECK_NULL); |
| 0 | 1935 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1936 } | |
| 1937 | |
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1938 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
| 0 | 1939 |
| 1940 // Ensure class is linked | |
| 1941 k->link_class(CHECK_NULL); | |
| 1942 | |
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1943 Array<Method*>* methods = k->methods(); |
| 0 | 1944 int methods_length = methods->length(); |
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1945 |
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1946 // Save original method_idnum in case of redefinition, which can change |
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1947 // the idnum of obsolete methods. The new method will have the same idnum |
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1948 // but if we refresh the methods array, the counts will be wrong. |
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1949 ResourceMark rm(THREAD); |
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1950 GrowableArray<int>* idnums = new GrowableArray<int>(methods_length); |
| 0 | 1951 int num_methods = 0; |
| 1952 | |
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1953 for (int i = 0; i < methods_length; i++) { |
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1954 methodHandle method(THREAD, methods->at(i)); |
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1955 if (select_method(method, want_constructor)) { |
| 0 | 1956 if (!publicOnly || method->is_public()) { |
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1957 idnums->push(method->method_idnum()); |
| 0 | 1958 ++num_methods; |
| 1959 } | |
| 1960 } | |
| 1961 } | |
| 1962 | |
| 1963 // Allocate result | |
|
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1964 objArrayOop r = oopFactory::new_objArray(klass, num_methods, CHECK_NULL); |
| 0 | 1965 objArrayHandle result (THREAD, r); |
| 1966 | |
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1967 // Now just put the methods that we selected above, but go by their idnum |
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1968 // in case of redefinition. The methods can be redefined at any safepoint, |
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1969 // so above when allocating the oop array and below when creating reflect |
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1970 // objects. |
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1971 for (int i = 0; i < num_methods; i++) { |
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1972 methodHandle method(THREAD, k->method_with_idnum(idnums->at(i))); |
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1973 if (method.is_null()) { |
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1974 // Method may have been deleted and seems this API can handle null |
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1975 // Otherwise should probably put a method that throws NSME |
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1976 result->obj_at_put(i, NULL); |
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1977 } else { |
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1978 oop m; |
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1979 if (want_constructor) { |
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1980 m = Reflection::new_constructor(method, CHECK_NULL); |
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1981 } else { |
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1982 m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); |
| 0 | 1983 } |
|
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1984 result->obj_at_put(i, m); |
| 0 | 1985 } |
| 1986 } | |
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1987 |
| 0 | 1988 return (jobjectArray) JNIHandles::make_local(env, result()); |
| 1989 } | |
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1990 |
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1991 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) |
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1992 { |
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1993 JVMWrapper("JVM_GetClassDeclaredMethods"); |
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1994 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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1995 /*want_constructor*/ false, |
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1996 SystemDictionary::reflect_Method_klass(), THREAD); |
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1997 } |
| 0 | 1998 JVM_END |
| 1999 | |
| 2000 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 2001 { | |
| 2002 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
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2003 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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2004 /*want_constructor*/ true, |
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2005 SystemDictionary::reflect_Constructor_klass(), THREAD); |
| 0 | 2006 } |
| 2007 JVM_END | |
| 2008 | |
| 2009 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
| 2010 { | |
| 2011 JVMWrapper("JVM_GetClassAccessFlags"); | |
| 2012 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 2013 // Primitive type | |
| 2014 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 2015 } | |
| 2016 | |
| 6983 | 2017 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2018 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; |
| 2019 } | |
| 2020 JVM_END | |
| 2021 | |
| 2022 | |
| 2023 // Constant pool access ////////////////////////////////////////////////////////// | |
| 2024 | |
| 2025 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
| 2026 { | |
| 2027 JVMWrapper("JVM_GetClassConstantPool"); | |
| 2028 JvmtiVMObjectAllocEventCollector oam; | |
| 2029 | |
| 2030 // Return null for primitives and arrays | |
| 2031 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
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2032 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 2033 if (k->oop_is_instance()) { |
| 0 | 2034 instanceKlassHandle k_h(THREAD, k); |
| 2035 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
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2036 sun_reflect_ConstantPool::set_cp(jcp(), k_h->constants()); |
| 0 | 2037 return JNIHandles::make_local(jcp()); |
| 2038 } | |
| 2039 } | |
| 2040 return NULL; | |
| 2041 } | |
| 2042 JVM_END | |
| 2043 | |
| 2044 | |
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2045 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject obj, jobject unused)) |
| 0 | 2046 { |
| 2047 JVMWrapper("JVM_ConstantPoolGetSize"); | |
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2048 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2049 return cp->length(); |
| 2050 } | |
| 2051 JVM_END | |
| 2052 | |
| 2053 | |
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2054 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2055 { |
| 2056 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
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2057 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2058 bounds_check(cp, index, CHECK_NULL); |
| 2059 constantTag tag = cp->tag_at(index); | |
| 2060 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 2061 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2062 } | |
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2063 Klass* k = cp->klass_at(index, CHECK_NULL); |
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2064 return (jclass) JNIHandles::make_local(k->java_mirror()); |
| 0 | 2065 } |
| 2066 JVM_END | |
| 2067 | |
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2068 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2069 { |
| 2070 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
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2071 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2072 bounds_check(cp, index, CHECK_NULL); |
| 2073 constantTag tag = cp->tag_at(index); | |
| 2074 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 2075 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2076 } | |
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2077 Klass* k = ConstantPool::klass_at_if_loaded(cp, index); |
| 0 | 2078 if (k == NULL) return NULL; |
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2079 return (jclass) JNIHandles::make_local(k->java_mirror()); |
| 0 | 2080 } |
| 2081 JVM_END | |
| 2082 | |
| 2083 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 2084 constantTag tag = cp->tag_at(index); | |
| 2085 if (!tag.is_method() && !tag.is_interface_method()) { | |
| 2086 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2087 } | |
| 2088 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2089 Klass* k_o; |
| 0 | 2090 if (force_resolution) { |
| 2091 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 2092 } else { | |
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2093 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
| 0 | 2094 if (k_o == NULL) return NULL; |
| 2095 } | |
| 2096 instanceKlassHandle k(THREAD, k_o); | |
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2097 Symbol* name = cp->uncached_name_ref_at(index); |
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2098 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 2099 methodHandle m (THREAD, k->find_method(name, sig)); |
| 2100 if (m.is_null()) { | |
| 2101 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
| 2102 } | |
| 2103 oop method; | |
| 2104 if (!m->is_initializer() || m->is_static()) { | |
| 2105 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
| 2106 } else { | |
| 2107 method = Reflection::new_constructor(m, CHECK_NULL); | |
| 2108 } | |
| 2109 return JNIHandles::make_local(method); | |
| 2110 } | |
| 2111 | |
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2112 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2113 { |
| 2114 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
| 2115 JvmtiVMObjectAllocEventCollector oam; | |
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2116 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2117 bounds_check(cp, index, CHECK_NULL); |
| 2118 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
| 2119 return res; | |
| 2120 } | |
| 2121 JVM_END | |
| 2122 | |
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2123 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2124 { |
| 2125 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
| 2126 JvmtiVMObjectAllocEventCollector oam; | |
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2127 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2128 bounds_check(cp, index, CHECK_NULL); |
| 2129 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
| 2130 return res; | |
| 2131 } | |
| 2132 JVM_END | |
| 2133 | |
| 2134 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 2135 constantTag tag = cp->tag_at(index); | |
| 2136 if (!tag.is_field()) { | |
| 2137 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2138 } | |
| 2139 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2140 Klass* k_o; |
| 0 | 2141 if (force_resolution) { |
| 2142 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 2143 } else { | |
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2144 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
| 0 | 2145 if (k_o == NULL) return NULL; |
| 2146 } | |
| 2147 instanceKlassHandle k(THREAD, k_o); | |
|
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2148 Symbol* name = cp->uncached_name_ref_at(index); |
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2149 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 2150 fieldDescriptor fd; |
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2151 Klass* target_klass = k->find_field(name, sig, &fd); |
| 0 | 2152 if (target_klass == NULL) { |
| 2153 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
| 2154 } | |
| 2155 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
| 2156 return JNIHandles::make_local(field); | |
| 2157 } | |
| 2158 | |
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2159 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject obj, jobject unusedl, jint index)) |
| 0 | 2160 { |
| 2161 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
| 2162 JvmtiVMObjectAllocEventCollector oam; | |
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2163 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2164 bounds_check(cp, index, CHECK_NULL); |
| 2165 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
| 2166 return res; | |
| 2167 } | |
| 2168 JVM_END | |
| 2169 | |
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2170 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2171 { |
| 2172 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
| 2173 JvmtiVMObjectAllocEventCollector oam; | |
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2174 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2175 bounds_check(cp, index, CHECK_NULL); |
| 2176 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
| 2177 return res; | |
| 2178 } | |
| 2179 JVM_END | |
| 2180 | |
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2181 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2182 { |
| 2183 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
| 2184 JvmtiVMObjectAllocEventCollector oam; | |
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2185 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2186 bounds_check(cp, index, CHECK_NULL); |
| 2187 constantTag tag = cp->tag_at(index); | |
| 2188 if (!tag.is_field_or_method()) { | |
| 2189 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2190 } | |
| 2191 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
|
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2192 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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2193 Symbol* member_name = cp->uncached_name_ref_at(index); |
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2194 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
| 1142 | 2195 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
| 0 | 2196 objArrayHandle dest(THREAD, dest_o); |
| 2197 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
| 2198 dest->obj_at_put(0, str()); | |
| 2199 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
| 2200 dest->obj_at_put(1, str()); | |
| 2201 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
| 2202 dest->obj_at_put(2, str()); | |
| 2203 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 2204 } | |
| 2205 JVM_END | |
| 2206 | |
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2207 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2208 { |
| 2209 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
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2210 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2211 bounds_check(cp, index, CHECK_0); |
| 2212 constantTag tag = cp->tag_at(index); | |
| 2213 if (!tag.is_int()) { | |
| 2214 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2215 } | |
| 2216 return cp->int_at(index); | |
| 2217 } | |
| 2218 JVM_END | |
| 2219 | |
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2220 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2221 { |
| 2222 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
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2223 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2224 bounds_check(cp, index, CHECK_(0L)); |
| 2225 constantTag tag = cp->tag_at(index); | |
| 2226 if (!tag.is_long()) { | |
| 2227 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2228 } | |
| 2229 return cp->long_at(index); | |
| 2230 } | |
| 2231 JVM_END | |
| 2232 | |
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2233 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2234 { |
| 2235 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
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2236 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2237 bounds_check(cp, index, CHECK_(0.0f)); |
| 2238 constantTag tag = cp->tag_at(index); | |
| 2239 if (!tag.is_float()) { | |
| 2240 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2241 } | |
| 2242 return cp->float_at(index); | |
| 2243 } | |
| 2244 JVM_END | |
| 2245 | |
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2246 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2247 { |
| 2248 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
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2249 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2250 bounds_check(cp, index, CHECK_(0.0)); |
| 2251 constantTag tag = cp->tag_at(index); | |
| 2252 if (!tag.is_double()) { | |
| 2253 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2254 } | |
| 2255 return cp->double_at(index); | |
| 2256 } | |
| 2257 JVM_END | |
| 2258 | |
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2259 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2260 { |
| 2261 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
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2262 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2263 bounds_check(cp, index, CHECK_NULL); |
| 2264 constantTag tag = cp->tag_at(index); | |
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2265 if (!tag.is_string()) { |
| 0 | 2266 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
| 2267 } | |
| 2268 oop str = cp->string_at(index, CHECK_NULL); | |
| 2269 return (jstring) JNIHandles::make_local(str); | |
| 2270 } | |
| 2271 JVM_END | |
| 2272 | |
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2273 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2274 { |
| 2275 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
| 2276 JvmtiVMObjectAllocEventCollector oam; | |
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2277 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2278 bounds_check(cp, index, CHECK_NULL); |
| 2279 constantTag tag = cp->tag_at(index); | |
| 2280 if (!tag.is_symbol()) { | |
| 2281 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2282 } | |
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2283 Symbol* sym = cp->symbol_at(index); |
| 0 | 2284 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 2285 return (jstring) JNIHandles::make_local(str()); | |
| 2286 } | |
| 2287 JVM_END | |
| 2288 | |
| 2289 | |
| 2290 // Assertion support. ////////////////////////////////////////////////////////// | |
| 2291 | |
| 2292 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
| 2293 JVMWrapper("JVM_DesiredAssertionStatus"); | |
| 2294 assert(cls != NULL, "bad class"); | |
| 2295 | |
| 2296 oop r = JNIHandles::resolve(cls); | |
| 2297 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
| 2298 if (java_lang_Class::is_primitive(r)) return false; | |
| 2299 | |
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2300 Klass* k = java_lang_Class::as_Klass(r); |
| 6983 | 2301 assert(k->oop_is_instance(), "must be an instance klass"); |
| 2302 if (! k->oop_is_instance()) return false; | |
| 0 | 2303 |
| 2304 ResourceMark rm(THREAD); | |
| 6983 | 2305 const char* name = k->name()->as_C_string(); |
| 2306 bool system_class = k->class_loader() == NULL; | |
| 0 | 2307 return JavaAssertions::enabled(name, system_class); |
| 2308 | |
| 2309 JVM_END | |
| 2310 | |
| 2311 | |
| 2312 // Return a new AssertionStatusDirectives object with the fields filled in with | |
| 2313 // command-line assertion arguments (i.e., -ea, -da). | |
| 2314 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
| 2315 JVMWrapper("JVM_AssertionStatusDirectives"); | |
| 2316 JvmtiVMObjectAllocEventCollector oam; | |
| 2317 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
| 2318 return JNIHandles::make_local(env, asd); | |
| 2319 JVM_END | |
| 2320 | |
| 2321 // Verification //////////////////////////////////////////////////////////////////////////////// | |
| 2322 | |
| 2323 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
| 2324 | |
| 2325 // RedefineClasses support: bug 6214132 caused verification to fail. | |
| 2326 // All functions from this section should call the jvmtiThreadSate function: | |
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2327 // Klass* class_to_verify_considering_redefinition(Klass* klass). |
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2328 // The function returns a Klass* of the _scratch_class if the verifier |
| 0 | 2329 // was invoked in the middle of the class redefinition. |
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2330 // Otherwise it returns its argument value which is the _the_class Klass*. |
| 0 | 2331 // Please, refer to the description in the jvmtiThreadSate.hpp. |
| 2332 | |
| 2333 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
| 2334 JVMWrapper("JVM_GetClassNameUTF"); | |
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2335 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2336 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2337 return k->name()->as_utf8(); |
| 0 | 2338 JVM_END |
| 2339 | |
| 2340 | |
| 2341 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
| 2342 JVMWrapper("JVM_GetClassCPTypes"); | |
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2343 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2344 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2345 // types will have length zero if this is not an InstanceKlass |
| 0 | 2346 // (length is determined by call to JVM_GetClassCPEntriesCount) |
| 6983 | 2347 if (k->oop_is_instance()) { |
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2348 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2349 for (int index = cp->length() - 1; index >= 0; index--) { |
| 2350 constantTag tag = cp->tag_at(index); | |
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2351 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : tag.value(); |
| 0 | 2352 } |
| 2353 } | |
| 2354 JVM_END | |
| 2355 | |
| 2356 | |
| 2357 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
| 2358 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
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2359 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2360 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2361 if (!k->oop_is_instance()) |
| 0 | 2362 return 0; |
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2363 return InstanceKlass::cast(k)->constants()->length(); |
| 0 | 2364 JVM_END |
| 2365 | |
| 2366 | |
| 2367 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
| 2368 JVMWrapper("JVM_GetClassFieldsCount"); | |
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2369 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2370 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2371 if (!k->oop_is_instance()) |
| 0 | 2372 return 0; |
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2373 return InstanceKlass::cast(k)->java_fields_count(); |
| 0 | 2374 JVM_END |
| 2375 | |
| 2376 | |
| 2377 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
| 2378 JVMWrapper("JVM_GetClassMethodsCount"); | |
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2379 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2380 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2381 if (!k->oop_is_instance()) |
| 0 | 2382 return 0; |
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2383 return InstanceKlass::cast(k)->methods()->length(); |
| 0 | 2384 JVM_END |
| 2385 | |
| 2386 | |
| 2387 // The following methods, used for the verifier, are never called with | |
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2388 // array klasses, so a direct cast to InstanceKlass is safe. |
| 0 | 2389 // Typically, these methods are called in a loop with bounds determined |
| 2390 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
| 2391 // zero for arrays. | |
| 2392 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
| 2393 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
|
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2394 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2395 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2396 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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2397 int length = method->checked_exceptions_length(); |
| 0 | 2398 if (length > 0) { |
|
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|
2399 CheckedExceptionElement* table= method->checked_exceptions_start(); |
| 0 | 2400 for (int i = 0; i < length; i++) { |
| 2401 exceptions[i] = table[i].class_cp_index; | |
| 2402 } | |
| 2403 } | |
| 2404 JVM_END | |
| 2405 | |
| 2406 | |
| 2407 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
| 2408 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
|
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2409 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2410 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2411 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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2412 return method->checked_exceptions_length(); |
| 0 | 2413 JVM_END |
| 2414 | |
| 2415 | |
| 2416 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
| 2417 JVMWrapper("JVM_GetMethodIxByteCode"); | |
|
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2418 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2419 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2420 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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|
2421 memcpy(code, method->code_base(), method->code_size()); |
| 0 | 2422 JVM_END |
| 2423 | |
| 2424 | |
| 2425 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
| 2426 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
|
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|
2427 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2428 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2429 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2430 return method->code_size(); |
| 0 | 2431 JVM_END |
| 2432 | |
| 2433 | |
| 2434 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
| 2435 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
|
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2436 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2437 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2438 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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|
2439 ExceptionTable extable(method); |
|
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|
2440 entry->start_pc = extable.start_pc(entry_index); |
|
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|
2441 entry->end_pc = extable.end_pc(entry_index); |
|
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|
2442 entry->handler_pc = extable.handler_pc(entry_index); |
|
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|
2443 entry->catchType = extable.catch_type_index(entry_index); |
| 0 | 2444 JVM_END |
| 2445 | |
| 2446 | |
| 2447 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
| 2448 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
|
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|
2449 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2450 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2451 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2452 return method->exception_table_length(); |
| 0 | 2453 JVM_END |
| 2454 | |
| 2455 | |
| 2456 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
| 2457 JVMWrapper("JVM_GetMethodIxModifiers"); | |
|
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|
2458 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2459 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2460 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2461 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
| 0 | 2462 JVM_END |
| 2463 | |
| 2464 | |
| 2465 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
| 2466 JVMWrapper("JVM_GetFieldIxModifiers"); | |
|
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|
2467 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2468 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2469 return InstanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
| 0 | 2470 JVM_END |
| 2471 | |
| 2472 | |
| 2473 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
| 2474 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
|
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|
2475 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2476 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2477 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2478 return method->max_locals(); |
| 0 | 2479 JVM_END |
| 2480 | |
| 2481 | |
| 2482 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
| 2483 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
|
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|
2484 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2485 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2486 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2487 return method->size_of_parameters(); |
| 0 | 2488 JVM_END |
| 2489 | |
| 2490 | |
| 2491 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
| 2492 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
|
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|
2493 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2494 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2495 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2496 return method->verifier_max_stack(); |
| 0 | 2497 JVM_END |
| 2498 | |
| 2499 | |
| 2500 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
| 2501 JVMWrapper("JVM_IsConstructorIx"); | |
| 2502 ResourceMark rm(THREAD); | |
|
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|
2503 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2504 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2505 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2506 return method->name() == vmSymbols::object_initializer_name(); |
| 0 | 2507 JVM_END |
| 2508 | |
| 2509 | |
|
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8004967: Default method cause VerifyError: Illegal use of nonvirtual
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|
2510 JVM_QUICK_ENTRY(jboolean, JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cls, int method_index)) |
|
815957d0203e
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changeset
|
2511 JVMWrapper("JVM_IsVMGeneratedMethodIx"); |
|
815957d0203e
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changeset
|
2512 ResourceMark rm(THREAD); |
|
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changeset
|
2513 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
|
815957d0203e
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|
2514 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2515 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2516 return method->is_overpass(); |
|
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|
2517 JVM_END |
|
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|
2518 |
| 0 | 2519 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) |
| 2520 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
|
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|
2521 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2522 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2523 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2524 return method->name()->as_utf8(); |
| 0 | 2525 JVM_END |
| 2526 | |
| 2527 | |
| 2528 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
| 2529 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
|
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|
2530 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2531 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2532 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2533 return method->signature()->as_utf8(); |
| 0 | 2534 JVM_END |
| 2535 | |
| 2536 /** | |
| 2537 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
| 2538 * read entries in the constant pool. Since the old verifier always | |
| 2539 * works on a copy of the code, it will not see any rewriting that | |
| 2540 * may possibly occur in the middle of verification. So it is important | |
| 2541 * that nothing it calls tries to use the cpCache instead of the raw | |
| 2542 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
| 2543 */ | |
| 2544 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2545 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
|
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|
2546 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2547 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2548 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2549 switch (cp->tag_at(cp_index).value()) { |
| 2550 case JVM_CONSTANT_Fieldref: | |
| 2551 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
| 2552 default: | |
| 2553 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
| 2554 } | |
| 2555 ShouldNotReachHere(); | |
| 2556 return NULL; | |
| 2557 JVM_END | |
| 2558 | |
| 2559 | |
| 2560 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2561 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
|
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|
2562 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2563 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2564 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2565 switch (cp->tag_at(cp_index).value()) { |
| 2566 case JVM_CONSTANT_InterfaceMethodref: | |
| 2567 case JVM_CONSTANT_Methodref: | |
|
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|
2568 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2569 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
| 2570 default: | |
| 2571 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
| 2572 } | |
| 2573 ShouldNotReachHere(); | |
| 2574 return NULL; | |
| 2575 JVM_END | |
| 2576 | |
| 2577 | |
| 2578 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2579 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
|
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|
2580 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2581 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2582 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2583 switch (cp->tag_at(cp_index).value()) { |
| 2584 case JVM_CONSTANT_InterfaceMethodref: | |
| 2585 case JVM_CONSTANT_Methodref: | |
|
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|
2586 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2587 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
| 2588 default: | |
| 2589 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
| 2590 } | |
| 2591 ShouldNotReachHere(); | |
| 2592 return NULL; | |
| 2593 JVM_END | |
| 2594 | |
| 2595 | |
| 2596 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2597 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
|
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|
2598 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2599 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2600 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2601 switch (cp->tag_at(cp_index).value()) { |
| 2602 case JVM_CONSTANT_Fieldref: | |
| 2603 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
| 2604 default: | |
| 2605 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
| 2606 } | |
| 2607 ShouldNotReachHere(); | |
| 2608 return NULL; | |
| 2609 JVM_END | |
| 2610 | |
| 2611 | |
| 2612 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2613 JVMWrapper("JVM_GetCPClassNameUTF"); | |
|
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2614 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2615 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2616 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
|
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2617 Symbol* classname = cp->klass_name_at(cp_index); |
| 0 | 2618 return classname->as_utf8(); |
| 2619 JVM_END | |
| 2620 | |
| 2621 | |
| 2622 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2623 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
|
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2624 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2625 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2626 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2627 switch (cp->tag_at(cp_index).value()) { |
| 2628 case JVM_CONSTANT_Fieldref: { | |
| 2629 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
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2630 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2631 return classname->as_utf8(); |
| 2632 } | |
| 2633 default: | |
| 2634 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
| 2635 } | |
| 2636 ShouldNotReachHere(); | |
| 2637 return NULL; | |
| 2638 JVM_END | |
| 2639 | |
| 2640 | |
| 2641 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2642 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
|
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2643 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2644 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2645 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2646 switch (cp->tag_at(cp_index).value()) { |
| 2647 case JVM_CONSTANT_Methodref: | |
| 2648 case JVM_CONSTANT_InterfaceMethodref: { | |
| 2649 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
|
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2650 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2651 return classname->as_utf8(); |
| 2652 } | |
| 2653 default: | |
| 2654 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
| 2655 } | |
| 2656 ShouldNotReachHere(); | |
| 2657 return NULL; | |
| 2658 JVM_END | |
| 2659 | |
| 2660 | |
| 3938 | 2661 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
| 0 | 2662 JVMWrapper("JVM_GetCPFieldModifiers"); |
|
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2663 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
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2664 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
| 0 | 2665 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 2666 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
|
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2667 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
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2668 ConstantPool* cp_called = InstanceKlass::cast(k_called)->constants(); |
| 0 | 2669 switch (cp->tag_at(cp_index).value()) { |
| 2670 case JVM_CONSTANT_Fieldref: { | |
|
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2671 Symbol* name = cp->uncached_name_ref_at(cp_index); |
|
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|
2672 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
| 3938 | 2673 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
| 2674 if (fs.name() == name && fs.signature() == signature) { | |
| 2675 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
| 0 | 2676 } |
| 2677 } | |
| 2678 return -1; | |
| 2679 } | |
| 2680 default: | |
| 2681 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
| 2682 } | |
| 2683 ShouldNotReachHere(); | |
| 2684 return 0; | |
| 2685 JVM_END | |
| 2686 | |
| 2687 | |
| 2688 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
| 2689 JVMWrapper("JVM_GetCPMethodModifiers"); | |
|
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2690 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
|
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2691 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
| 0 | 2692 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 2693 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
|
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2694 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2695 switch (cp->tag_at(cp_index).value()) { |
| 2696 case JVM_CONSTANT_Methodref: | |
| 2697 case JVM_CONSTANT_InterfaceMethodref: { | |
|
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2698 Symbol* name = cp->uncached_name_ref_at(cp_index); |
|
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|
2699 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
|
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2700 Array<Method*>* methods = InstanceKlass::cast(k_called)->methods(); |
| 0 | 2701 int methods_count = methods->length(); |
| 2702 for (int i = 0; i < methods_count; i++) { | |
|
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|
2703 Method* method = methods->at(i); |
| 0 | 2704 if (method->name() == name && method->signature() == signature) { |
| 2705 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 2706 } | |
| 2707 } | |
| 2708 return -1; | |
| 2709 } | |
| 2710 default: | |
| 2711 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
| 2712 } | |
| 2713 ShouldNotReachHere(); | |
| 2714 return 0; | |
| 2715 JVM_END | |
| 2716 | |
| 2717 | |
| 2718 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
| 2719 | |
| 2720 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
| 2721 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
| 2722 JVM_END | |
| 2723 | |
| 2724 | |
| 2725 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
| 2726 JVMWrapper("JVM_IsSameClassPackage"); | |
| 2727 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
| 2728 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
|
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|
2729 Klass* klass1 = java_lang_Class::as_Klass(class1_mirror); |
|
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|
2730 Klass* klass2 = java_lang_Class::as_Klass(class2_mirror); |
| 0 | 2731 return (jboolean) Reflection::is_same_class_package(klass1, klass2); |
| 2732 JVM_END | |
| 2733 | |
| 2734 | |
| 2735 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
| 2736 | |
| 2737 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
| 2738 JVMWrapper2("JVM_Open (%s)", fname); | |
| 2739 | |
| 2740 //%note jvm_r6 | |
|
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diff
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|
2741 int result = os::open(fname, flags, mode); |
| 0 | 2742 if (result >= 0) { |
| 2743 return result; | |
| 2744 } else { | |
| 2745 switch(errno) { | |
| 2746 case EEXIST: | |
| 2747 return JVM_EEXIST; | |
| 2748 default: | |
| 2749 return -1; | |
| 2750 } | |
| 2751 } | |
| 2752 JVM_END | |
| 2753 | |
| 2754 | |
| 2755 JVM_LEAF(jint, JVM_Close(jint fd)) | |
| 2756 JVMWrapper2("JVM_Close (0x%x)", fd); | |
| 2757 //%note jvm_r6 | |
|
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|
2758 return os::close(fd); |
| 0 | 2759 JVM_END |
| 2760 | |
| 2761 | |
| 2762 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
| 2763 JVMWrapper2("JVM_Read (0x%x)", fd); | |
| 2764 | |
| 2765 //%note jvm_r6 | |
|
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|
2766 return (jint)os::restartable_read(fd, buf, nbytes); |
| 0 | 2767 JVM_END |
| 2768 | |
| 2769 | |
| 2770 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
| 2771 JVMWrapper2("JVM_Write (0x%x)", fd); | |
| 2772 | |
| 2773 //%note jvm_r6 | |
|
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|
2774 return (jint)os::write(fd, buf, nbytes); |
| 0 | 2775 JVM_END |
| 2776 | |
| 2777 | |
| 2778 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
| 2779 JVMWrapper2("JVM_Available (0x%x)", fd); | |
| 2780 //%note jvm_r6 | |
|
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|
2781 return os::available(fd, pbytes); |
| 0 | 2782 JVM_END |
| 2783 | |
| 2784 | |
| 2785 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
|
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|
2786 JVMWrapper4("JVM_Lseek (0x%x, " INT64_FORMAT ", %d)", fd, (int64_t) offset, whence); |
| 0 | 2787 //%note jvm_r6 |
|
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|
2788 return os::lseek(fd, offset, whence); |
| 0 | 2789 JVM_END |
| 2790 | |
| 2791 | |
| 2792 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
|
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|
2793 JVMWrapper3("JVM_SetLength (0x%x, " INT64_FORMAT ")", fd, (int64_t) length); |
|
1980
828eafbd85cc
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|
2794 return os::ftruncate(fd, length); |
| 0 | 2795 JVM_END |
| 2796 | |
| 2797 | |
| 2798 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
| 2799 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
| 2800 //%note jvm_r6 | |
|
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|
2801 return os::fsync(fd); |
| 0 | 2802 JVM_END |
| 2803 | |
| 2804 | |
| 2805 // Printing support ////////////////////////////////////////////////// | |
| 2806 extern "C" { | |
| 2807 | |
|
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|
2808 ATTRIBUTE_PRINTF(3, 0) |
| 0 | 2809 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { |
| 2810 // see bug 4399518, 4417214 | |
| 2811 if ((intptr_t)count <= 0) return -1; | |
| 2812 return vsnprintf(str, count, fmt, args); | |
| 2813 } | |
| 2814 | |
|
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|
2815 ATTRIBUTE_PRINTF(3, 0) |
| 0 | 2816 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { |
| 2817 va_list args; | |
| 2818 int len; | |
| 2819 va_start(args, fmt); | |
| 2820 len = jio_vsnprintf(str, count, fmt, args); | |
| 2821 va_end(args); | |
| 2822 return len; | |
| 2823 } | |
| 2824 | |
|
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|
2825 ATTRIBUTE_PRINTF(2,3) |
| 0 | 2826 int jio_fprintf(FILE* f, const char *fmt, ...) { |
| 2827 int len; | |
| 2828 va_list args; | |
| 2829 va_start(args, fmt); | |
| 2830 len = jio_vfprintf(f, fmt, args); | |
| 2831 va_end(args); | |
| 2832 return len; | |
| 2833 } | |
| 2834 | |
|
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|
2835 ATTRIBUTE_PRINTF(2, 0) |
| 0 | 2836 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { |
| 2837 if (Arguments::vfprintf_hook() != NULL) { | |
| 2838 return Arguments::vfprintf_hook()(f, fmt, args); | |
| 2839 } else { | |
| 2840 return vfprintf(f, fmt, args); | |
| 2841 } | |
| 2842 } | |
| 2843 | |
|
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|
2844 ATTRIBUTE_PRINTF(1, 2) |
| 2191 | 2845 JNIEXPORT int jio_printf(const char *fmt, ...) { |
| 0 | 2846 int len; |
| 2847 va_list args; | |
| 2848 va_start(args, fmt); | |
| 2849 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
| 2850 va_end(args); | |
| 2851 return len; | |
| 2852 } | |
| 2853 | |
| 2854 | |
| 2855 // HotSpot specific jio method | |
| 2856 void jio_print(const char* s) { | |
| 2857 // Try to make this function as atomic as possible. | |
| 2858 if (Arguments::vfprintf_hook() != NULL) { | |
| 2859 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
| 2860 } else { | |
|
513
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6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
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diff
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|
2861 // 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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|
2862 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
| 0 | 2863 } |
| 2864 } | |
| 2865 | |
| 2866 } // Extern C | |
| 2867 | |
| 2868 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
| 2869 | |
| 2870 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
| 2871 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
| 2872 // OSThread objects. The exception to this rule is when the target object is the thread | |
| 2873 // doing the operation, in which case we know that the thread won't exit until the | |
| 2874 // operation is done (all exits being voluntary). There are a few cases where it is | |
| 2875 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
| 2876 // you are alive. While these can still happen, they are not subject to deadlocks if | |
| 2877 // the lock is held while the operation occurs (this is not the case for suspend, for | |
| 2878 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
| 2879 // implementation is local to this file, we always lock Threads_lock for that one. | |
| 2880 | |
| 2881 static void thread_entry(JavaThread* thread, TRAPS) { | |
| 2882 HandleMark hm(THREAD); | |
| 2883 Handle obj(THREAD, thread->threadObj()); | |
| 2884 JavaValue result(T_VOID); | |
| 2885 JavaCalls::call_virtual(&result, | |
| 2886 obj, | |
| 1142 | 2887 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
|
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|
2888 vmSymbols::run_method_name(), |
|
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|
2889 vmSymbols::void_method_signature(), |
| 0 | 2890 THREAD); |
| 2891 } | |
| 2892 | |
| 2893 | |
| 2894 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
| 2895 JVMWrapper("JVM_StartThread"); | |
| 2896 JavaThread *native_thread = NULL; | |
| 2897 | |
| 2898 // We cannot hold the Threads_lock when we throw an exception, | |
| 2899 // due to rank ordering issues. Example: we might need to grab the | |
| 2900 // Heap_lock while we construct the exception. | |
| 2901 bool throw_illegal_thread_state = false; | |
| 2902 | |
| 2903 // We must release the Threads_lock before we can post a jvmti event | |
| 2904 // in Thread::start. | |
| 2905 { | |
| 2906 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
| 2907 // we operate. | |
| 2908 MutexLocker mu(Threads_lock); | |
| 2909 | |
|
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dholmes
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diff
changeset
|
2910 // Since JDK 5 the java.lang.Thread threadStatus is used to prevent |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
changeset
|
2911 // 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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diff
changeset
|
2912 // 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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diff
changeset
|
2913 // there is a small window between the Thread object being created |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
changeset
|
2914 // (with its JavaThread set) and the update to its threadStatus, so we |
|
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diff
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|
2915 // have to check for this |
|
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diff
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|
2916 if (java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)) != NULL) { |
|
ccfcb502af3f
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1980
diff
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|
2917 throw_illegal_thread_state = true; |
| 0 | 2918 } else { |
|
2162
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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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|
2919 // We could also check the stillborn flag to see if this thread was already stopped, but |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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parents:
1980
diff
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|
2920 // for historical reasons we let the thread detect that itself when it starts running |
|
ccfcb502af3f
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diff
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|
2921 |
| 0 | 2922 jlong size = |
| 2923 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
| 2924 // Allocate the C++ Thread structure and create the native thread. The | |
| 2925 // stack size retrieved from java is signed, but the constructor takes | |
| 2926 // size_t (an unsigned type), so avoid passing negative values which would | |
| 2927 // result in really large stacks. | |
| 2928 size_t sz = size > 0 ? (size_t) size : 0; | |
| 2929 native_thread = new JavaThread(&thread_entry, sz); | |
| 2930 | |
| 2931 // At this point it may be possible that no osthread was created for the | |
| 2932 // JavaThread due to lack of memory. Check for this situation and throw | |
| 2933 // an exception if necessary. Eventually we may want to change this so | |
| 2934 // that we only grab the lock if the thread was created successfully - | |
| 2935 // then we can also do this check and throw the exception in the | |
| 2936 // JavaThread constructor. | |
| 2937 if (native_thread->osthread() != NULL) { | |
| 2938 // Note: the current thread is not being used within "prepare". | |
| 2939 native_thread->prepare(jthread); | |
| 2940 } | |
| 2941 } | |
| 2942 } | |
| 2943 | |
| 2944 if (throw_illegal_thread_state) { | |
| 2945 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
| 2946 } | |
| 2947 | |
| 2948 assert(native_thread != NULL, "Starting null thread?"); | |
| 2949 | |
| 2950 if (native_thread->osthread() == NULL) { | |
| 2951 // No one should hold a reference to the 'native_thread'. | |
| 2952 delete native_thread; | |
| 2953 if (JvmtiExport::should_post_resource_exhausted()) { | |
| 2954 JvmtiExport::post_resource_exhausted( | |
| 2955 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
| 2956 "unable to create new native thread"); | |
| 2957 } | |
| 2958 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
| 2959 "unable to create new native thread"); | |
| 2960 } | |
| 2961 | |
| 2962 Thread::start(native_thread); | |
| 2963 | |
| 2964 JVM_END | |
| 2965 | |
| 2966 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
| 2967 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
| 2968 // but is thought to be reliable and simple. In the case, where the receiver is the | |
|
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diff
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|
2969 // same thread as the sender, no safepoint is needed. |
| 0 | 2970 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
| 2971 JVMWrapper("JVM_StopThread"); | |
| 2972 | |
| 2973 oop java_throwable = JNIHandles::resolve(throwable); | |
| 2974 if (java_throwable == NULL) { | |
| 2975 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 2976 } | |
| 2977 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2978 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
|
4872
aa3d708d67c4
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parents:
4717
diff
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|
2979 Events::log_exception(JavaThread::current(), |
|
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parents:
4717
diff
changeset
|
2980 "JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", |
|
17937
78bbf4d43a14
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17889
diff
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|
2981 p2i(receiver), p2i((address)java_thread), p2i(throwable)); |
|
2162
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diff
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|
2982 // First check if thread is alive |
| 0 | 2983 if (receiver != NULL) { |
| 2984 // Check if exception is getting thrown at self (use oop equality, since the | |
| 2985 // target object might exit) | |
| 2986 if (java_thread == thread->threadObj()) { | |
| 2987 THROW_OOP(java_throwable); | |
| 2988 } else { | |
| 2989 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
| 2990 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
| 2991 } | |
| 2992 } | |
|
2162
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diff
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|
2993 else { |
|
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1980
diff
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|
2994 // Either: |
|
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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|
2995 // - target thread has not been started before being stopped, or |
|
ccfcb502af3f
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dholmes
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diff
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|
2996 // - target thread already terminated |
|
ccfcb502af3f
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diff
changeset
|
2997 // We could read the threadStatus to determine which case it is |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2998 // but that is overkill as it doesn't matter. We must set the |
|
ccfcb502af3f
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dholmes
parents:
1980
diff
changeset
|
2999 // stillborn flag for the first case, and if the thread has already |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
3000 // exited setting this flag has no affect |
|
ccfcb502af3f
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dholmes
parents:
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diff
changeset
|
3001 java_lang_Thread::set_stillborn(java_thread); |
|
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diff
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|
3002 } |
| 0 | 3003 JVM_END |
| 3004 | |
| 3005 | |
| 3006 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
| 3007 JVMWrapper("JVM_IsThreadAlive"); | |
| 3008 | |
| 3009 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
| 3010 return java_lang_Thread::is_alive(thread_oop); | |
| 3011 JVM_END | |
| 3012 | |
| 3013 | |
| 3014 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
| 3015 JVMWrapper("JVM_SuspendThread"); | |
| 3016 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3017 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
| 3018 | |
| 3019 if (receiver != NULL) { | |
| 3020 // thread has run and has not exited (still on threads list) | |
| 3021 | |
| 3022 { | |
| 3023 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
| 3024 if (receiver->is_external_suspend()) { | |
| 3025 // Don't allow nested external suspend requests. We can't return | |
| 3026 // an error from this interface so just ignore the problem. | |
| 3027 return; | |
| 3028 } | |
| 3029 if (receiver->is_exiting()) { // thread is in the process of exiting | |
| 3030 return; | |
| 3031 } | |
| 3032 receiver->set_external_suspend(); | |
| 3033 } | |
| 3034 | |
| 3035 // java_suspend() will catch threads in the process of exiting | |
| 3036 // and will ignore them. | |
| 3037 receiver->java_suspend(); | |
| 3038 | |
| 3039 // It would be nice to have the following assertion in all the | |
| 3040 // time, but it is possible for a racing resume request to have | |
| 3041 // resumed this thread right after we suspended it. Temporarily | |
| 3042 // enable this assertion if you are chasing a different kind of | |
| 3043 // bug. | |
| 3044 // | |
| 3045 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
| 3046 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
| 3047 } | |
| 3048 JVM_END | |
| 3049 | |
| 3050 | |
| 3051 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
| 3052 JVMWrapper("JVM_ResumeThread"); | |
| 3053 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
| 3054 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
| 3055 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
| 3056 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
| 3057 // looks at it. | |
| 3058 MutexLocker ml(Threads_lock); | |
| 3059 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3060 if (thr != NULL) { | |
| 3061 // the thread has run and is not in the process of exiting | |
| 3062 thr->java_resume(); | |
| 3063 } | |
| 3064 JVM_END | |
| 3065 | |
| 3066 | |
| 3067 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
| 3068 JVMWrapper("JVM_SetThreadPriority"); | |
| 3069 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3070 MutexLocker ml(Threads_lock); | |
| 3071 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3072 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
| 3073 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 3074 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
| 3075 Thread::set_priority(thr, (ThreadPriority)prio); | |
| 3076 } | |
| 3077 JVM_END | |
| 3078 | |
| 3079 | |
| 3080 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
| 3081 JVMWrapper("JVM_Yield"); | |
| 3082 if (os::dont_yield()) return; | |
| 4006 | 3083 #ifndef USDT2 |
|
1324
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fparain
parents:
1144
diff
changeset
|
3084 HS_DTRACE_PROBE0(hotspot, thread__yield); |
| 4006 | 3085 #else /* USDT2 */ |
| 3086 HOTSPOT_THREAD_YIELD(); | |
| 3087 #endif /* USDT2 */ | |
| 0 | 3088 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
| 3089 // Critical for similar threading behaviour | |
| 3090 if (ConvertYieldToSleep) { | |
| 3091 os::sleep(thread, MinSleepInterval, false); | |
| 3092 } else { | |
| 3093 os::yield(); | |
| 3094 } | |
| 3095 JVM_END | |
| 3096 | |
| 3097 | |
| 3098 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
| 3099 JVMWrapper("JVM_Sleep"); | |
| 3100 | |
| 3101 if (millis < 0) { | |
| 3102 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
| 3103 } | |
| 3104 | |
| 3105 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
| 3106 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 3107 } | |
| 3108 | |
| 3109 // Save current thread state and restore it at the end of this block. | |
| 3110 // And set new thread state to SLEEPING. | |
| 3111 JavaThreadSleepState jtss(thread); | |
| 3112 | |
| 4006 | 3113 #ifndef USDT2 |
|
1324
e392695de029
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fparain
parents:
1144
diff
changeset
|
3114 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); |
| 4006 | 3115 #else /* USDT2 */ |
| 3116 HOTSPOT_THREAD_SLEEP_BEGIN( | |
| 3117 millis); | |
| 3118 #endif /* USDT2 */ | |
|
1324
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parents:
1144
diff
changeset
|
3119 |
| 10405 | 3120 EventThreadSleep event; |
| 3121 | |
| 0 | 3122 if (millis == 0) { |
| 3123 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
| 3124 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
| 3125 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
| 3126 // for SOLARIS | |
| 3127 if (ConvertSleepToYield) { | |
| 3128 os::yield(); | |
| 3129 } else { | |
| 3130 ThreadState old_state = thread->osthread()->get_state(); | |
| 3131 thread->osthread()->set_state(SLEEPING); | |
| 3132 os::sleep(thread, MinSleepInterval, false); | |
| 3133 thread->osthread()->set_state(old_state); | |
| 3134 } | |
| 3135 } else { | |
| 3136 ThreadState old_state = thread->osthread()->get_state(); | |
| 3137 thread->osthread()->set_state(SLEEPING); | |
| 3138 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
| 3139 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
| 3140 // us while we were sleeping. We do not overwrite those. | |
| 3141 if (!HAS_PENDING_EXCEPTION) { | |
| 10405 | 3142 if (event.should_commit()) { |
| 3143 event.set_time(millis); | |
| 3144 event.commit(); | |
| 3145 } | |
| 4006 | 3146 #ifndef USDT2 |
|
1324
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6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1144
diff
changeset
|
3147 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); |
| 4006 | 3148 #else /* USDT2 */ |
| 3149 HOTSPOT_THREAD_SLEEP_END( | |
| 3150 1); | |
| 3151 #endif /* USDT2 */ | |
| 0 | 3152 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
| 3153 // to properly restore the thread state. That's likely wrong. | |
| 3154 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 3155 } | |
| 3156 } | |
| 3157 thread->osthread()->set_state(old_state); | |
| 3158 } | |
| 10405 | 3159 if (event.should_commit()) { |
| 3160 event.set_time(millis); | |
| 3161 event.commit(); | |
| 3162 } | |
| 4006 | 3163 #ifndef USDT2 |
|
1324
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6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1144
diff
changeset
|
3164 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); |
| 4006 | 3165 #else /* USDT2 */ |
| 3166 HOTSPOT_THREAD_SLEEP_END( | |
| 3167 0); | |
| 3168 #endif /* USDT2 */ | |
| 0 | 3169 JVM_END |
| 3170 | |
| 3171 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
| 3172 JVMWrapper("JVM_CurrentThread"); | |
| 3173 oop jthread = thread->threadObj(); | |
| 3174 assert (thread != NULL, "no current thread!"); | |
| 3175 return JNIHandles::make_local(env, jthread); | |
| 3176 JVM_END | |
| 3177 | |
| 3178 | |
| 3179 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
| 3180 JVMWrapper("JVM_CountStackFrames"); | |
| 3181 | |
| 3182 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3183 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3184 bool throw_illegal_thread_state = false; | |
| 3185 int count = 0; | |
| 3186 | |
| 3187 { | |
| 3188 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 3189 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 3190 // acquire of the lock | |
| 3191 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3192 | |
| 3193 if (thr == NULL) { | |
| 3194 // do nothing | |
| 3195 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
| 3196 // Check whether this java thread has been suspended already. If not, throws | |
| 3197 // IllegalThreadStateException. We defer to throw that exception until | |
| 3198 // Threads_lock is released since loading exception class has to leave VM. | |
| 3199 // The correct way to test a thread is actually suspended is | |
| 3200 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
| 3201 // the Threads_lock. The above tests are sufficient for our purposes | |
| 3202 // provided the walkability of the stack is stable - which it isn't | |
| 3203 // 100% but close enough for most practical purposes. | |
| 3204 throw_illegal_thread_state = true; | |
| 3205 } else { | |
| 3206 // Count all java activation, i.e., number of vframes | |
| 3207 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
| 3208 // Native frames are not counted | |
| 3209 if (!vfst.method()->is_native()) count++; | |
| 3210 } | |
| 3211 } | |
| 3212 } | |
| 3213 | |
| 3214 if (throw_illegal_thread_state) { | |
| 3215 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
| 3216 "this thread is not suspended"); | |
| 3217 } | |
| 3218 return count; | |
| 3219 JVM_END | |
| 3220 | |
| 3221 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
| 3222 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
| 3223 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
| 3224 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
| 3225 // outside the critical section. Threads_lock is hot so we want to minimize | |
| 3226 // the hold-time. A cleaner interface would be to decompose interrupt into | |
| 3227 // two steps. The 1st phase, performed under Threads_lock, would return | |
| 3228 // a closure that'd be invoked after Threads_lock was dropped. | |
| 3229 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
| 3230 // admit spurious wakeups. | |
| 3231 | |
| 3232 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
| 3233 JVMWrapper("JVM_Interrupt"); | |
| 3234 | |
| 3235 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3236 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3237 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 3238 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 3239 // acquire of the lock | |
| 3240 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3241 if (thr != NULL) { | |
| 3242 Thread::interrupt(thr); | |
| 3243 } | |
| 3244 JVM_END | |
| 3245 | |
| 3246 | |
| 3247 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
| 3248 JVMWrapper("JVM_IsInterrupted"); | |
| 3249 | |
| 3250 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3251 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3252 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 3253 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 3254 // acquire of the lock | |
| 3255 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3256 if (thr == NULL) { | |
| 3257 return JNI_FALSE; | |
| 3258 } else { | |
| 3259 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
| 3260 } | |
| 3261 JVM_END | |
| 3262 | |
| 3263 | |
| 3264 // Return true iff the current thread has locked the object passed in | |
| 3265 | |
| 3266 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
| 3267 JVMWrapper("JVM_HoldsLock"); | |
| 3268 assert(THREAD->is_Java_thread(), "sanity check"); | |
| 3269 if (obj == NULL) { | |
| 3270 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
| 3271 } | |
| 3272 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
| 3273 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
| 3274 JVM_END | |
| 3275 | |
| 3276 | |
| 3277 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
| 3278 JVMWrapper("JVM_DumpAllStacks"); | |
| 3279 VM_PrintThreads op; | |
| 3280 VMThread::execute(&op); | |
| 3281 if (JvmtiExport::should_post_data_dump()) { | |
| 3282 JvmtiExport::post_data_dump(); | |
| 3283 } | |
| 3284 JVM_END | |
| 3285 | |
| 4006 | 3286 JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name)) |
| 3287 JVMWrapper("JVM_SetNativeThreadName"); | |
| 3288 ResourceMark rm(THREAD); | |
| 3289 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3290 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 3291 // Thread naming only supported for the current thread, doesn't work for | |
| 3292 // target threads. | |
| 3293 if (Thread::current() == thr && !thr->has_attached_via_jni()) { | |
| 3294 // we don't set the name of an attached thread to avoid stepping | |
| 3295 // on other programs | |
| 3296 const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
| 3297 os::set_native_thread_name(thread_name); | |
| 3298 } | |
| 3299 JVM_END | |
| 0 | 3300 |
| 3301 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
| 3302 | |
| 3303 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
| 3304 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
| 3305 if (jthread->privileged_stack_top() == NULL) return false; | |
| 3306 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
| 3307 oop loader = jthread->privileged_stack_top()->class_loader(); | |
| 3308 if (loader == NULL) return true; | |
| 3309 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
| 3310 if (trusted) return true; | |
| 3311 } | |
| 3312 return false; | |
| 3313 } | |
| 3314 | |
| 3315 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
| 3316 JVMWrapper("JVM_CurrentLoadedClass"); | |
| 3317 ResourceMark rm(THREAD); | |
| 3318 | |
| 3319 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3320 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3321 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3322 if (trusted) return NULL; | |
| 3323 | |
|
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|
3324 Method* m = vfst.method(); |
| 0 | 3325 if (!m->is_native()) { |
|
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|
3326 InstanceKlass* holder = m->method_holder(); |
|
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|
3327 oop loader = holder->class_loader(); |
| 0 | 3328 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
|
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|
3329 return (jclass) JNIHandles::make_local(env, holder->java_mirror()); |
| 0 | 3330 } |
| 3331 } | |
| 3332 } | |
| 3333 return NULL; | |
| 3334 JVM_END | |
| 3335 | |
| 3336 | |
| 3337 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
| 3338 JVMWrapper("JVM_CurrentClassLoader"); | |
| 3339 ResourceMark rm(THREAD); | |
| 3340 | |
| 3341 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3342 | |
| 3343 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3344 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3345 if (trusted) return NULL; | |
| 3346 | |
|
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|
3347 Method* m = vfst.method(); |
| 0 | 3348 if (!m->is_native()) { |
|
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|
3349 InstanceKlass* holder = m->method_holder(); |
| 0 | 3350 assert(holder->is_klass(), "just checking"); |
|
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|
3351 oop loader = holder->class_loader(); |
| 0 | 3352 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
| 3353 return JNIHandles::make_local(env, loader); | |
| 3354 } | |
| 3355 } | |
| 3356 } | |
| 3357 return NULL; | |
| 3358 JVM_END | |
| 3359 | |
| 3360 | |
| 3361 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
| 3362 JVMWrapper("JVM_GetClassContext"); | |
| 3363 ResourceMark rm(THREAD); | |
| 3364 JvmtiVMObjectAllocEventCollector oam; | |
|
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|
3365 vframeStream vfst(thread); |
|
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|
3366 |
|
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|
3367 if (SystemDictionary::reflect_CallerSensitive_klass() != NULL) { |
|
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|
3368 // This must only be called from SecurityManager.getClassContext |
|
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|
3369 Method* m = vfst.method(); |
|
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|
3370 if (!(m->method_holder() == SystemDictionary::SecurityManager_klass() && |
|
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|
3371 m->name() == vmSymbols::getClassContext_name() && |
|
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|
3372 m->signature() == vmSymbols::void_class_array_signature())) { |
|
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|
3373 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetClassContext must only be called from SecurityManager.getClassContext"); |
|
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|
3374 } |
|
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|
3375 } |
|
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|
3376 |
|
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|
3377 // Collect method holders |
|
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8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
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|
3378 GrowableArray<KlassHandle>* klass_array = new GrowableArray<KlassHandle>(); |
|
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|
3379 for (; !vfst.at_end(); vfst.security_next()) { |
|
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|
3380 Method* m = vfst.method(); |
| 0 | 3381 // Native frames are not returned |
|
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|
3382 if (!m->is_ignored_by_security_stack_walk() && !m->is_native()) { |
|
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|
3383 Klass* holder = m->method_holder(); |
| 0 | 3384 assert(holder->is_klass(), "just checking"); |
|
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changeset
|
3385 klass_array->append(holder); |
| 0 | 3386 } |
| 3387 } | |
| 3388 | |
| 3389 // Create result array of type [Ljava/lang/Class; | |
|
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8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
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|
3390 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), klass_array->length(), CHECK_NULL); |
| 0 | 3391 // Fill in mirrors corresponding to method holders |
|
11001
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changeset
|
3392 for (int i = 0; i < klass_array->length(); i++) { |
|
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diff
changeset
|
3393 result->obj_at_put(i, klass_array->at(i)->java_mirror()); |
| 0 | 3394 } |
| 3395 | |
| 3396 return (jobjectArray) JNIHandles::make_local(env, result); | |
| 3397 JVM_END | |
| 3398 | |
| 3399 | |
| 3400 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
| 3401 JVMWrapper("JVM_ClassDepth"); | |
| 3402 ResourceMark rm(THREAD); | |
| 3403 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 3404 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
| 3405 | |
| 3406 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
|
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6990754: Use native memory and reference counting to implement SymbolTable
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2162
diff
changeset
|
3407 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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2162
diff
changeset
|
3408 if (class_name_sym == NULL) { |
| 0 | 3409 return -1; |
| 3410 } | |
| 3411 | |
| 3412 int depth = 0; | |
| 3413 | |
| 3414 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3415 if (!vfst.method()->is_native()) { | |
|
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diff
changeset
|
3416 InstanceKlass* holder = vfst.method()->method_holder(); |
| 0 | 3417 assert(holder->is_klass(), "just checking"); |
|
6940
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diff
changeset
|
3418 if (holder->name() == class_name_sym) { |
| 0 | 3419 return depth; |
| 3420 } | |
| 3421 depth++; | |
| 3422 } | |
| 3423 } | |
| 3424 return -1; | |
| 3425 JVM_END | |
| 3426 | |
| 3427 | |
| 3428 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
| 3429 JVMWrapper("JVM_ClassLoaderDepth"); | |
| 3430 ResourceMark rm(THREAD); | |
| 3431 int depth = 0; | |
| 3432 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3433 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
| 3434 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3435 if (trusted) return -1; | |
| 3436 | |
|
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|
3437 Method* m = vfst.method(); |
| 0 | 3438 if (!m->is_native()) { |
|
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coleenp
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diff
changeset
|
3439 InstanceKlass* holder = m->method_holder(); |
| 0 | 3440 assert(holder->is_klass(), "just checking"); |
|
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diff
changeset
|
3441 oop loader = holder->class_loader(); |
| 0 | 3442 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
| 3443 return depth; | |
| 3444 } | |
| 3445 depth++; | |
| 3446 } | |
| 3447 } | |
| 3448 return -1; | |
| 3449 JVM_END | |
| 3450 | |
| 3451 | |
| 3452 // java.lang.Package //////////////////////////////////////////////////////////////// | |
| 3453 | |
| 3454 | |
| 3455 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
| 3456 JVMWrapper("JVM_GetSystemPackage"); | |
| 3457 ResourceMark rm(THREAD); | |
| 3458 JvmtiVMObjectAllocEventCollector oam; | |
| 3459 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
| 3460 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
| 3461 return (jstring) JNIHandles::make_local(result); | |
| 3462 JVM_END | |
| 3463 | |
| 3464 | |
| 3465 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
| 3466 JVMWrapper("JVM_GetSystemPackages"); | |
| 3467 JvmtiVMObjectAllocEventCollector oam; | |
| 3468 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
| 3469 return (jobjectArray) JNIHandles::make_local(result); | |
| 3470 JVM_END | |
| 3471 | |
| 3472 | |
| 3473 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
| 3474 | |
|
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|
3475 bool force_verify_field_access(Klass* current_class, Klass* field_class, AccessFlags access, bool classloader_only) { |
| 0 | 3476 if (current_class == NULL) { |
| 3477 return true; | |
| 3478 } | |
| 3479 if ((current_class == field_class) || access.is_public()) { | |
| 3480 return true; | |
| 3481 } | |
| 3482 | |
| 3483 if (access.is_protected()) { | |
| 3484 // See if current_class is a subclass of field_class | |
| 6983 | 3485 if (current_class->is_subclass_of(field_class)) { |
| 0 | 3486 return true; |
| 3487 } | |
| 3488 } | |
| 3489 | |
|
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diff
changeset
|
3490 return (!access.is_private() && InstanceKlass::cast(current_class)->is_same_class_package(field_class)); |
| 0 | 3491 } |
| 3492 | |
| 3493 | |
| 3494 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
| 3495 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
| 3496 JVMWrapper("JVM_AllocateNewObject"); | |
| 3497 JvmtiVMObjectAllocEventCollector oam; | |
| 3498 // Receiver is not used | |
| 3499 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
| 3500 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
| 3501 | |
| 3502 // Cannot instantiate primitive types | |
| 3503 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
| 3504 ResourceMark rm(THREAD); | |
| 3505 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3506 } | |
| 3507 | |
| 3508 // Arrays not allowed here, must use JVM_AllocateNewArray | |
| 6983 | 3509 if (java_lang_Class::as_Klass(curr_mirror)->oop_is_array() || |
| 3510 java_lang_Class::as_Klass(init_mirror)->oop_is_array()) { | |
| 0 | 3511 ResourceMark rm(THREAD); |
| 3512 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3513 } | |
| 3514 | |
|
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6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3515 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_Klass(curr_mirror)); |
|
da91efe96a93
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6271
diff
changeset
|
3516 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_Klass(init_mirror)); |
| 0 | 3517 |
| 3518 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
| 3519 | |
| 3520 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
| 3521 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
| 3522 | |
| 3523 // Make sure klass is initialized, since we are about to instantiate one of them. | |
| 3524 curr_klass->initialize(CHECK_NULL); | |
| 3525 | |
| 3526 methodHandle m (THREAD, | |
| 3527 init_klass->find_method(vmSymbols::object_initializer_name(), | |
| 3528 vmSymbols::void_method_signature())); | |
| 3529 if (m.is_null()) { | |
| 3530 ResourceMark rm(THREAD); | |
| 3531 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
| 6983 | 3532 Method::name_and_sig_as_C_string(init_klass(), |
| 0 | 3533 vmSymbols::object_initializer_name(), |
| 3534 vmSymbols::void_method_signature())); | |
| 3535 } | |
| 3536 | |
| 3537 if (curr_klass == init_klass && !m->is_public()) { | |
| 3538 // Calling the constructor for class 'curr_klass'. | |
| 3539 // Only allow calls to a public no-arg constructor. | |
| 3540 // This path corresponds to creating an Externalizable object. | |
| 3541 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3542 } | |
| 3543 | |
| 3544 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
| 3545 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
| 3546 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3547 } | |
| 3548 | |
| 3549 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
| 3550 // Call constructor m. This might call a constructor higher up in the hierachy | |
| 3551 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
| 3552 | |
| 3553 return JNIHandles::make_local(obj()); | |
| 3554 JVM_END | |
| 3555 | |
| 3556 | |
| 3557 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
| 3558 JVMWrapper("JVM_AllocateNewArray"); | |
| 3559 JvmtiVMObjectAllocEventCollector oam; | |
| 3560 oop mirror = JNIHandles::resolve_non_null(currClass); | |
| 3561 | |
| 3562 if (java_lang_Class::is_primitive(mirror)) { | |
| 3563 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3564 } | |
|
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diff
changeset
|
3565 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 3566 oop result; |
| 3567 | |
|
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coleenp
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diff
changeset
|
3568 if (k->oop_is_typeArray()) { |
| 0 | 3569 // typeArray |
|
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
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6725
diff
changeset
|
3570 result = TypeArrayKlass::cast(k)->allocate(length, CHECK_NULL); |
|
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coleenp
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6271
diff
changeset
|
3571 } else if (k->oop_is_objArray()) { |
| 0 | 3572 // objArray |
|
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
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6725
diff
changeset
|
3573 ObjArrayKlass* oak = ObjArrayKlass::cast(k); |
| 0 | 3574 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) |
| 3575 result = oak->allocate(length, CHECK_NULL); | |
| 3576 } else { | |
| 3577 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3578 } | |
| 3579 return JNIHandles::make_local(env, result); | |
| 3580 JVM_END | |
| 3581 | |
| 3582 | |
| 3583 // Return the first non-null class loader up the execution stack, or null | |
| 3584 // if only code from the null class loader is on the stack. | |
| 3585 | |
| 3586 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
| 3587 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3588 // UseNewReflection | |
| 3589 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
|
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3590 oop loader = vfst.method()->method_holder()->class_loader(); |
| 0 | 3591 if (loader != NULL) { |
| 3592 return JNIHandles::make_local(env, loader); | |
| 3593 } | |
| 3594 } | |
| 3595 return NULL; | |
| 3596 JVM_END | |
| 3597 | |
| 3598 | |
| 3599 // Load a class relative to the most recent class on the stack with a non-null | |
| 3600 // classloader. | |
| 3601 // This function has been deprecated and should not be considered part of the | |
| 3602 // specified JVM interface. | |
| 3603 | |
| 3604 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
| 3605 jclass currClass, jstring currClassName)) | |
| 3606 JVMWrapper("JVM_LoadClass0"); | |
| 3607 // Receiver is not used | |
| 3608 ResourceMark rm(THREAD); | |
| 3609 | |
| 3610 // Class name argument is not guaranteed to be in internal format | |
| 3611 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
| 3612 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
| 3613 | |
| 3614 const char* str = java_lang_String::as_utf8_string(string()); | |
| 3615 | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
3616 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
| 0 | 3617 // It's impossible to create this class; the name cannot fit |
| 3618 // into the constant pool. | |
| 3619 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
| 3620 } | |
| 3621 | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
3622 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
| 0 | 3623 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
| 3624 // Find the most recent class on the stack with a non-null classloader | |
| 3625 oop loader = NULL; | |
| 3626 oop protection_domain = NULL; | |
| 3627 if (curr_klass.is_null()) { | |
| 3628 for (vframeStream vfst(thread); | |
| 3629 !vfst.at_end() && loader == NULL; | |
| 3630 vfst.next()) { | |
| 3631 if (!vfst.method()->is_native()) { | |
|
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3632 InstanceKlass* holder = vfst.method()->method_holder(); |
|
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3633 loader = holder->class_loader(); |
|
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3634 protection_domain = holder->protection_domain(); |
| 0 | 3635 } |
| 3636 } | |
| 3637 } else { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3638 Klass* curr_klass_oop = java_lang_Class::as_Klass(curr_klass()); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3639 loader = InstanceKlass::cast(curr_klass_oop)->class_loader(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3640 protection_domain = InstanceKlass::cast(curr_klass_oop)->protection_domain(); |
| 0 | 3641 } |
| 3642 Handle h_loader(THREAD, loader); | |
| 3643 Handle h_prot (THREAD, protection_domain); | |
|
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3644 jclass result = find_class_from_class_loader(env, name, true, h_loader, h_prot, |
|
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3645 false, thread); |
|
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3646 if (TraceClassResolution && result != NULL) { |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3647 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
|
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3648 } |
|
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3649 return result; |
| 0 | 3650 JVM_END |
| 3651 | |
| 3652 | |
| 3653 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
| 3654 | |
| 3655 | |
| 3656 // resolve array handle and check arguments | |
| 3657 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
| 3658 if (arr == NULL) { | |
| 3659 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 3660 } | |
| 3661 oop a = JNIHandles::resolve_non_null(arr); | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3662 if (!a->is_array() || (type_array_only && !a->is_typeArray())) { |
| 0 | 3663 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); |
| 3664 } | |
| 3665 return arrayOop(a); | |
| 3666 } | |
| 3667 | |
| 3668 | |
| 3669 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
| 3670 JVMWrapper("JVM_GetArrayLength"); | |
| 3671 arrayOop a = check_array(env, arr, false, CHECK_0); | |
| 3672 return a->length(); | |
| 3673 JVM_END | |
| 3674 | |
| 3675 | |
| 3676 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
| 3677 JVMWrapper("JVM_Array_Get"); | |
| 3678 JvmtiVMObjectAllocEventCollector oam; | |
| 3679 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
| 3680 jvalue value; | |
| 3681 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
| 3682 oop box = Reflection::box(&value, type, CHECK_NULL); | |
| 3683 return JNIHandles::make_local(env, box); | |
| 3684 JVM_END | |
| 3685 | |
| 3686 | |
| 3687 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
| 3688 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
| 3689 jvalue value; | |
| 3690 value.i = 0; // to initialize value before getting used in CHECK | |
| 3691 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
| 3692 assert(a->is_typeArray(), "just checking"); | |
| 3693 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
| 3694 BasicType wide_type = (BasicType) wCode; | |
| 3695 if (type != wide_type) { | |
| 3696 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
| 3697 } | |
| 3698 return value; | |
| 3699 JVM_END | |
| 3700 | |
| 3701 | |
| 3702 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
| 3703 JVMWrapper("JVM_SetArrayElement"); | |
| 3704 arrayOop a = check_array(env, arr, false, CHECK); | |
| 3705 oop box = JNIHandles::resolve(val); | |
| 3706 jvalue value; | |
| 3707 value.i = 0; // to initialize value before getting used in CHECK | |
| 3708 BasicType value_type; | |
| 3709 if (a->is_objArray()) { | |
| 3710 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
| 3711 value_type = Reflection::unbox_for_regular_object(box, &value); | |
| 3712 } else { | |
| 3713 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
| 3714 } | |
| 3715 Reflection::array_set(&value, a, index, value_type, CHECK); | |
| 3716 JVM_END | |
| 3717 | |
| 3718 | |
| 3719 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
| 3720 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
| 3721 arrayOop a = check_array(env, arr, true, CHECK); | |
| 3722 assert(a->is_typeArray(), "just checking"); | |
| 3723 BasicType value_type = (BasicType) vCode; | |
| 3724 Reflection::array_set(&v, a, index, value_type, CHECK); | |
| 3725 JVM_END | |
| 3726 | |
| 3727 | |
| 3728 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
| 3729 JVMWrapper("JVM_NewArray"); | |
| 3730 JvmtiVMObjectAllocEventCollector oam; | |
| 3731 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3732 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
| 3733 return JNIHandles::make_local(env, result); | |
| 3734 JVM_END | |
| 3735 | |
| 3736 | |
| 3737 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
| 3738 JVMWrapper("JVM_NewMultiArray"); | |
| 3739 JvmtiVMObjectAllocEventCollector oam; | |
| 3740 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
| 3741 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3742 assert(dim_array->is_typeArray(), "just checking"); | |
| 3743 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
| 3744 return JNIHandles::make_local(env, result); | |
| 3745 JVM_END | |
| 3746 | |
| 3747 | |
| 3748 // Networking library support //////////////////////////////////////////////////////////////////// | |
| 3749 | |
| 3750 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
| 3751 JVMWrapper("JVM_InitializeSocketLibrary"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3752 return 0; |
| 0 | 3753 JVM_END |
| 3754 | |
| 3755 | |
| 3756 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
| 3757 JVMWrapper("JVM_Socket"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3758 return os::socket(domain, type, protocol); |
| 0 | 3759 JVM_END |
| 3760 | |
| 3761 | |
| 3762 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
| 3763 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
| 3764 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3765 return os::socket_close(fd); |
| 0 | 3766 JVM_END |
| 3767 | |
| 3768 | |
| 3769 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
| 3770 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
| 3771 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3772 return os::socket_shutdown(fd, howto); |
| 0 | 3773 JVM_END |
| 3774 | |
| 3775 | |
| 3776 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3777 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
| 3778 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3779 return os::recv(fd, buf, (size_t)nBytes, (uint)flags); |
| 0 | 3780 JVM_END |
| 3781 | |
| 3782 | |
| 3783 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3784 JVMWrapper2("JVM_Send (0x%x)", fd); | |
| 3785 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3786 return os::send(fd, buf, (size_t)nBytes, (uint)flags); |
| 0 | 3787 JVM_END |
| 3788 | |
| 3789 | |
| 3790 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
| 3791 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
| 3792 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3793 return os::timeout(fd, timeout); |
| 0 | 3794 JVM_END |
| 3795 | |
| 3796 | |
| 3797 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
| 3798 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
| 3799 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3800 return os::listen(fd, count); |
| 0 | 3801 JVM_END |
| 3802 | |
| 3803 | |
| 3804 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
| 3805 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
| 3806 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3807 return os::connect(fd, him, (socklen_t)len); |
| 0 | 3808 JVM_END |
| 3809 | |
| 3810 | |
| 3811 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
| 3812 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
| 3813 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3814 return os::bind(fd, him, (socklen_t)len); |
| 0 | 3815 JVM_END |
| 3816 | |
| 3817 | |
| 3818 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
| 3819 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
| 3820 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3821 socklen_t socklen = (socklen_t)(*len); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3822 jint result = os::accept(fd, him, &socklen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3823 *len = (jint)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3824 return result; |
| 0 | 3825 JVM_END |
| 3826 | |
| 3827 | |
| 3828 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
| 3829 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
| 3830 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3831 socklen_t socklen = (socklen_t)(*fromlen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3832 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
|
3833 *fromlen = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3834 return result; |
| 0 | 3835 JVM_END |
| 3836 | |
| 3837 | |
| 3838 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
| 3839 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
| 3840 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3841 socklen_t socklen = (socklen_t)(*len); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3842 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
|
3843 *len = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3844 return result; |
| 0 | 3845 JVM_END |
| 3846 | |
| 3847 | |
| 3848 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
| 3849 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
| 3850 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3851 return os::sendto(fd, buf, (size_t)len, (uint)flags, to, (socklen_t)tolen); |
| 0 | 3852 JVM_END |
| 3853 | |
| 3854 | |
| 3855 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
| 3856 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
| 3857 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3858 return os::socket_available(fd, pbytes); |
| 0 | 3859 JVM_END |
| 3860 | |
| 3861 | |
| 3862 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
| 3863 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
| 3864 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3865 socklen_t socklen = (socklen_t)(*optlen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3866 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
|
3867 *optlen = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3868 return result; |
| 0 | 3869 JVM_END |
| 3870 | |
| 3871 | |
| 3872 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
| 3873 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
| 3874 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3875 return os::set_sock_opt(fd, level, optname, optval, (socklen_t)optlen); |
| 0 | 3876 JVM_END |
| 3877 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3878 |
| 0 | 3879 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) |
| 3880 JVMWrapper("JVM_GetHostName"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3881 return os::get_host_name(name, namelen); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3882 JVM_END |
| 0 | 3883 |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3884 |
| 0 | 3885 // Library support /////////////////////////////////////////////////////////////////////////// |
| 3886 | |
| 3887 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
| 3888 //%note jvm_ct | |
| 3889 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
| 3890 char ebuf[1024]; | |
| 3891 void *load_result; | |
| 3892 { | |
| 3893 ThreadToNativeFromVM ttnfvm(thread); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3894 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
| 0 | 3895 } |
| 3896 if (load_result == NULL) { | |
| 3897 char msg[1024]; | |
| 3898 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
| 3899 // Since 'ebuf' may contain a string encoded using | |
| 3900 // platform encoding scheme, we need to pass | |
| 3901 // Exceptions::unsafe_to_utf8 to the new_exception method | |
| 3902 // as the last argument. See bug 6367357. | |
| 3903 Handle h_exception = | |
| 3904 Exceptions::new_exception(thread, | |
| 3905 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
| 3906 msg, Exceptions::unsafe_to_utf8); | |
| 3907 | |
| 3908 THROW_HANDLE_0(h_exception); | |
| 3909 } | |
| 3910 return load_result; | |
| 3911 JVM_END | |
| 3912 | |
| 3913 | |
| 3914 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
| 3915 JVMWrapper("JVM_UnloadLibrary"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3916 os::dll_unload(handle); |
| 0 | 3917 JVM_END |
| 3918 | |
| 3919 | |
| 3920 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
| 3921 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
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|
3922 return os::dll_lookup(handle, name); |
| 0 | 3923 JVM_END |
| 3924 | |
|
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|
3925 |
| 0 | 3926 // Floating point support //////////////////////////////////////////////////////////////////// |
| 3927 | |
| 3928 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
| 3929 JVMWrapper("JVM_IsNaN"); | |
| 3930 return g_isnan(a); | |
| 3931 JVM_END | |
| 3932 | |
| 3933 | |
| 3934 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
| 3935 | |
| 3936 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
| 3937 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
| 3938 return Threads::is_supported_jni_version_including_1_1(version); | |
| 3939 JVM_END | |
| 3940 | |
| 3941 | |
| 3942 // String support /////////////////////////////////////////////////////////////////////////// | |
| 3943 | |
| 3944 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
| 3945 JVMWrapper("JVM_InternString"); | |
| 3946 JvmtiVMObjectAllocEventCollector oam; | |
| 3947 if (str == NULL) return NULL; | |
| 3948 oop string = JNIHandles::resolve_non_null(str); | |
| 3949 oop result = StringTable::intern(string, CHECK_NULL); | |
| 3950 return (jstring) JNIHandles::make_local(env, result); | |
| 3951 JVM_END | |
| 3952 | |
| 3953 | |
| 3954 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
| 3955 | |
| 3956 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
| 3957 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
| 3958 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
| 3959 // that only works with java threads. | |
| 3960 | |
| 3961 | |
| 3962 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
| 3963 VM_Exit::block_if_vm_exited(); | |
| 3964 JVMWrapper("JVM_RawMonitorCreate"); | |
| 3965 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
| 3966 } | |
| 3967 | |
| 3968 | |
| 3969 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
| 3970 VM_Exit::block_if_vm_exited(); | |
| 3971 JVMWrapper("JVM_RawMonitorDestroy"); | |
| 3972 delete ((Mutex*) mon); | |
| 3973 } | |
| 3974 | |
| 3975 | |
| 3976 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
| 3977 VM_Exit::block_if_vm_exited(); | |
| 3978 JVMWrapper("JVM_RawMonitorEnter"); | |
| 3979 ((Mutex*) mon)->jvm_raw_lock(); | |
| 3980 return 0; | |
| 3981 } | |
| 3982 | |
| 3983 | |
| 3984 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
| 3985 VM_Exit::block_if_vm_exited(); | |
| 3986 JVMWrapper("JVM_RawMonitorExit"); | |
| 3987 ((Mutex*) mon)->jvm_raw_unlock(); | |
| 3988 } | |
| 3989 | |
| 3990 | |
| 3991 // Support for Serialization | |
| 3992 | |
| 3993 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
| 3994 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
| 3995 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
| 3996 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
| 3997 | |
| 3998 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
| 3999 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
| 4000 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
| 4001 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
| 4002 | |
| 4003 | |
| 4004 void initialize_converter_functions() { | |
| 4005 if (JDK_Version::is_gte_jdk14x_version()) { | |
| 4006 // These functions only exist for compatibility with 1.3.1 and earlier | |
| 4007 return; | |
| 4008 } | |
| 4009 | |
| 4010 // called from universe_post_init() | |
| 4011 assert( | |
| 4012 int_bits_to_float_fn == NULL && | |
| 4013 long_bits_to_double_fn == NULL && | |
| 4014 float_to_int_bits_fn == NULL && | |
| 4015 double_to_long_bits_fn == NULL , | |
| 4016 "initialization done twice" | |
| 4017 ); | |
| 4018 // initialize | |
| 4019 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
| 4020 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
| 4021 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
| 4022 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
| 4023 // verify | |
| 4024 assert( | |
| 4025 int_bits_to_float_fn != NULL && | |
| 4026 long_bits_to_double_fn != NULL && | |
| 4027 float_to_int_bits_fn != NULL && | |
| 4028 double_to_long_bits_fn != NULL , | |
| 4029 "initialization failed" | |
| 4030 ); | |
| 4031 } | |
| 4032 | |
| 4033 | |
| 4034 | |
| 4035 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
| 4036 | |
| 18051 | 4037 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, |
| 4038 Handle loader, Handle protection_domain, | |
| 4039 jboolean throwError, TRAPS) { | |
| 0 | 4040 // Security Note: |
| 4041 // The Java level wrapper will perform the necessary security check allowing | |
| 18051 | 4042 // us to pass the NULL as the initiating class loader. The VM is responsible for |
| 4043 // the checkPackageAccess relative to the initiating class loader via the | |
| 4044 // protection_domain. The protection_domain is passed as NULL by the java code | |
| 4045 // if there is no security manager in 3-arg Class.forName(). | |
|
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|
4046 Klass* klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); |
|
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|
4047 |
| 0 | 4048 KlassHandle klass_handle(THREAD, klass); |
| 4049 // Check if we should initialize the class | |
| 4050 if (init && klass_handle->oop_is_instance()) { | |
| 4051 klass_handle->initialize(CHECK_NULL); | |
| 4052 } | |
| 4053 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
| 4054 } | |
| 4055 | |
| 4056 | |
| 4057 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
| 4058 | |
| 4059 #ifndef PRODUCT | |
| 4060 | |
| 4061 extern "C" { | |
| 4062 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
| 4063 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
| 4064 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
| 4065 } | |
| 4066 | |
| 4067 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
| 4068 JVMWrapper("JVM_AccessBoolVMFlag"); | |
|
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diff
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|
4069 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, Flag::INTERNAL); |
| 0 | 4070 JVM_END |
| 4071 | |
| 4072 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
| 4073 JVMWrapper("JVM_AccessVMIntFlag"); | |
| 4074 intx v; | |
|
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|
4075 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, Flag::INTERNAL); |
| 0 | 4076 *value = (jint)v; |
| 4077 return result; | |
| 4078 JVM_END | |
| 4079 | |
| 4080 | |
| 4081 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
| 4082 JVMWrapper("JVM_VMBreakPoint"); | |
| 4083 oop the_obj = JNIHandles::resolve(obj); | |
| 4084 BREAKPOINT; | |
| 4085 JVM_END | |
| 4086 | |
| 4087 | |
| 4088 #endif | |
| 4089 | |
| 4090 | |
| 4091 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4092 | |
| 4093 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
| 4094 JVMWrapper("JVM_InvokeMethod"); | |
| 4095 Handle method_handle; | |
| 4096 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
| 4097 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
| 4098 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
| 4099 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4100 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
| 4101 jobject res = JNIHandles::make_local(env, result); | |
| 4102 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4103 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
| 4104 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
| 4105 if (java_lang_Class::is_primitive(ret_type)) { | |
| 4106 // Only for primitive type vm allocates memory for java object. | |
| 4107 // See box() method. | |
| 4108 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4109 } | |
| 4110 } | |
| 4111 return res; | |
| 4112 } else { | |
| 4113 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
| 4114 } | |
| 4115 JVM_END | |
| 4116 | |
| 4117 | |
| 4118 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
| 4119 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
| 4120 oop constructor_mirror = JNIHandles::resolve(c); | |
| 4121 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4122 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
| 4123 jobject res = JNIHandles::make_local(env, result); | |
| 4124 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4125 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4126 } | |
| 4127 return res; | |
| 4128 JVM_END | |
| 4129 | |
| 4130 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4131 | |
| 4132 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
| 4133 JVMWrapper("JVM_SupportsCX8"); | |
| 4134 return VM_Version::supports_cx8(); | |
| 4135 JVM_END | |
| 4136 | |
| 4137 | |
| 4138 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
| 4139 JVMWrapper("JVM_CX8Field"); | |
| 4140 jlong res; | |
| 4141 oop o = JNIHandles::resolve(obj); | |
| 4142 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 4143 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
| 4144 | |
| 4145 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
| 4146 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
| 4147 | |
| 4148 return res == oldVal; | |
| 4149 JVM_END | |
| 4150 | |
|
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|
4151 // DTrace /////////////////////////////////////////////////////////////////// |
|
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|
4152 |
|
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|
4153 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
|
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|
4154 JVMWrapper("JVM_DTraceGetVersion"); |
|
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|
4155 return (jint)JVM_TRACING_DTRACE_VERSION; |
|
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|
4156 JVM_END |
|
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|
4157 |
|
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|
4158 JVM_ENTRY(jlong,JVM_DTraceActivate( |
|
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|
4159 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
|
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|
4160 JVM_DTraceProvider* providers)) |
|
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|
4161 JVMWrapper("JVM_DTraceActivate"); |
|
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|
4162 return DTraceJSDT::activate( |
|
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|
4163 version, module_name, providers_count, providers, CHECK_0); |
|
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|
4164 JVM_END |
|
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|
4165 |
|
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|
4166 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
|
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|
4167 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
|
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|
4168 return DTraceJSDT::is_probe_enabled(method); |
|
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|
4169 JVM_END |
|
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|
4170 |
|
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|
4171 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
|
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|
4172 JVMWrapper("JVM_DTraceDispose"); |
|
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|
4173 DTraceJSDT::dispose(handle); |
|
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|
4174 JVM_END |
|
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|
4175 |
|
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|
4176 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
|
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|
4177 JVMWrapper("JVM_DTraceIsSupported"); |
|
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4178 return DTraceJSDT::is_supported(); |
|
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|
4179 JVM_END |
|
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|
4180 |
| 0 | 4181 // Returns an array of all live Thread objects (VM internal JavaThreads, |
| 4182 // jvmti agent threads, and JNI attaching threads are skipped) | |
| 4183 // See CR 6404306 regarding JNI attaching threads | |
| 4184 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
| 4185 ResourceMark rm(THREAD); | |
| 4186 ThreadsListEnumerator tle(THREAD, false, false); | |
| 4187 JvmtiVMObjectAllocEventCollector oam; | |
| 4188 | |
| 4189 int num_threads = tle.num_threads(); | |
| 1142 | 4190 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
| 0 | 4191 objArrayHandle threads_ah(THREAD, r); |
| 4192 | |
| 4193 for (int i = 0; i < num_threads; i++) { | |
| 4194 Handle h = tle.get_threadObj(i); | |
| 4195 threads_ah->obj_at_put(i, h()); | |
| 4196 } | |
| 4197 | |
| 4198 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
| 4199 JVM_END | |
| 4200 | |
| 4201 | |
| 4202 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
| 4203 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
| 4204 // the corresponding entry in the given threads array | |
| 4205 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
| 4206 JVMWrapper("JVM_DumpThreads"); | |
| 4207 JvmtiVMObjectAllocEventCollector oam; | |
| 4208 | |
| 4209 // Check if threads is null | |
| 4210 if (threads == NULL) { | |
| 4211 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4212 } | |
| 4213 | |
| 4214 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
| 4215 objArrayHandle ah(THREAD, a); | |
| 4216 int num_threads = ah->length(); | |
| 4217 // check if threads is non-empty array | |
| 4218 if (num_threads == 0) { | |
| 4219 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
| 4220 } | |
| 4221 | |
| 4222 // check if threads is not an array of objects of Thread class | |
|
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|
4223 Klass* k = ObjArrayKlass::cast(ah->klass())->element_klass(); |
| 1142 | 4224 if (k != SystemDictionary::Thread_klass()) { |
| 0 | 4225 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
| 4226 } | |
| 4227 | |
| 4228 ResourceMark rm(THREAD); | |
| 4229 | |
| 4230 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
| 4231 for (int i = 0; i < num_threads; i++) { | |
| 4232 oop thread_obj = ah->obj_at(i); | |
| 4233 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
| 4234 thread_handle_array->append(h); | |
| 4235 } | |
| 4236 | |
| 4237 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
| 4238 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
| 4239 | |
| 4240 JVM_END | |
| 4241 | |
| 4242 // JVM monitoring and management support | |
| 4243 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
| 4244 return Management::get_jmm_interface(version); | |
| 4245 JVM_END | |
| 4246 | |
| 4247 // com.sun.tools.attach.VirtualMachine agent properties support | |
| 4248 // | |
| 4249 // Initialize the agent properties with the properties maintained in the VM | |
| 4250 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
| 4251 JVMWrapper("JVM_InitAgentProperties"); | |
| 4252 ResourceMark rm; | |
| 4253 | |
| 4254 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
| 4255 | |
| 4256 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
| 4257 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
| 4258 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
| 4259 return properties; | |
| 4260 JVM_END | |
| 4261 | |
| 4262 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
| 4263 { | |
| 4264 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
| 4265 JvmtiVMObjectAllocEventCollector oam; | |
| 4266 | |
| 4267 if (ofClass == NULL) { | |
| 4268 return NULL; | |
| 4269 } | |
| 4270 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
| 4271 // Special handling for primitive objects | |
| 4272 if (java_lang_Class::is_primitive(mirror())) { | |
| 4273 return NULL; | |
| 4274 } | |
|
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|
4275 Klass* k = java_lang_Class::as_Klass(mirror()); |
| 6983 | 4276 if (!k->oop_is_instance()) { |
| 0 | 4277 return NULL; |
| 4278 } | |
| 4279 instanceKlassHandle ik_h(THREAD, k); | |
| 4280 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
| 4281 if (encl_method_class_idx == 0) { | |
| 4282 return NULL; | |
| 4283 } | |
| 1142 | 4284 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
| 0 | 4285 objArrayHandle dest(THREAD, dest_o); |
|
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|
4286 Klass* enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); |
| 6983 | 4287 dest->obj_at_put(0, enc_k->java_mirror()); |
| 0 | 4288 int encl_method_method_idx = ik_h->enclosing_method_method_index(); |
| 4289 if (encl_method_method_idx != 0) { | |
|
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2162
diff
changeset
|
4290 Symbol* sym = ik_h->constants()->symbol_at( |
| 0 | 4291 extract_low_short_from_int( |
| 4292 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4293 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4294 dest->obj_at_put(1, str()); | |
|
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diff
changeset
|
4295 sym = ik_h->constants()->symbol_at( |
| 0 | 4296 extract_high_short_from_int( |
| 4297 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4298 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4299 dest->obj_at_put(2, str()); | |
| 4300 } | |
| 4301 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 4302 } | |
| 4303 JVM_END | |
| 4304 | |
| 4305 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
| 4306 jint javaThreadState)) | |
| 4307 { | |
| 4308 // If new thread states are added in future JDK and VM versions, | |
| 4309 // this should check if the JDK version is compatible with thread | |
| 4310 // states supported by the VM. Return NULL if not compatible. | |
| 4311 // | |
| 4312 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4313 // to the Java thread state that the JDK supports. | |
| 4314 // | |
| 4315 | |
| 4316 typeArrayHandle values_h; | |
| 4317 switch (javaThreadState) { | |
| 4318 case JAVA_THREAD_STATE_NEW : { | |
| 4319 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4320 values_h = typeArrayHandle(THREAD, r); | |
| 4321 values_h->int_at_put(0, java_lang_Thread::NEW); | |
| 4322 break; | |
| 4323 } | |
| 4324 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4325 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4326 values_h = typeArrayHandle(THREAD, r); | |
| 4327 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
| 4328 break; | |
| 4329 } | |
| 4330 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4331 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4332 values_h = typeArrayHandle(THREAD, r); | |
| 4333 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
| 4334 break; | |
| 4335 } | |
| 4336 case JAVA_THREAD_STATE_WAITING : { | |
| 4337 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
| 4338 values_h = typeArrayHandle(THREAD, r); | |
| 4339 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
| 4340 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
| 4341 break; | |
| 4342 } | |
| 4343 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4344 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
| 4345 values_h = typeArrayHandle(THREAD, r); | |
| 4346 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
| 4347 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
| 4348 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
| 4349 break; | |
| 4350 } | |
| 4351 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4352 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4353 values_h = typeArrayHandle(THREAD, r); | |
| 4354 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
| 4355 break; | |
| 4356 } | |
| 4357 default: | |
| 4358 // Unknown state - probably incompatible JDK version | |
| 4359 return NULL; | |
| 4360 } | |
| 4361 | |
| 4362 return (jintArray) JNIHandles::make_local(env, values_h()); | |
| 4363 } | |
| 4364 JVM_END | |
| 4365 | |
| 4366 | |
| 4367 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
| 4368 jint javaThreadState, | |
| 4369 jintArray values)) | |
| 4370 { | |
| 4371 // If new thread states are added in future JDK and VM versions, | |
| 4372 // this should check if the JDK version is compatible with thread | |
| 4373 // states supported by the VM. Return NULL if not compatible. | |
| 4374 // | |
| 4375 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4376 // to the Java thread state that the JDK supports. | |
| 4377 // | |
| 4378 | |
| 4379 ResourceMark rm; | |
| 4380 | |
| 4381 // Check if threads is null | |
| 4382 if (values == NULL) { | |
| 4383 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4384 } | |
| 4385 | |
| 4386 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
| 4387 typeArrayHandle values_h(THREAD, v); | |
| 4388 | |
| 4389 objArrayHandle names_h; | |
| 4390 switch (javaThreadState) { | |
| 4391 case JAVA_THREAD_STATE_NEW : { | |
| 4392 assert(values_h->length() == 1 && | |
| 4393 values_h->int_at(0) == java_lang_Thread::NEW, | |
| 4394 "Invalid threadStatus value"); | |
| 4395 | |
| 1142 | 4396 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4397 1, /* only 1 substate */ |
| 4398 CHECK_NULL); | |
| 4399 names_h = objArrayHandle(THREAD, r); | |
| 4400 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
| 4401 names_h->obj_at_put(0, name()); | |
| 4402 break; | |
| 4403 } | |
| 4404 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4405 assert(values_h->length() == 1 && | |
| 4406 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
| 4407 "Invalid threadStatus value"); | |
| 4408 | |
| 1142 | 4409 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4410 1, /* only 1 substate */ |
| 4411 CHECK_NULL); | |
| 4412 names_h = objArrayHandle(THREAD, r); | |
| 4413 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
| 4414 names_h->obj_at_put(0, name()); | |
| 4415 break; | |
| 4416 } | |
| 4417 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4418 assert(values_h->length() == 1 && | |
| 4419 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
| 4420 "Invalid threadStatus value"); | |
| 4421 | |
| 1142 | 4422 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4423 1, /* only 1 substate */ |
| 4424 CHECK_NULL); | |
| 4425 names_h = objArrayHandle(THREAD, r); | |
| 4426 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
| 4427 names_h->obj_at_put(0, name()); | |
| 4428 break; | |
| 4429 } | |
| 4430 case JAVA_THREAD_STATE_WAITING : { | |
| 4431 assert(values_h->length() == 2 && | |
| 4432 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
| 4433 values_h->int_at(1) == java_lang_Thread::PARKED, | |
| 4434 "Invalid threadStatus value"); | |
| 1142 | 4435 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4436 2, /* number of substates */ |
| 4437 CHECK_NULL); | |
| 4438 names_h = objArrayHandle(THREAD, r); | |
| 4439 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
| 4440 CHECK_NULL); | |
| 4441 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
| 4442 CHECK_NULL); | |
| 4443 names_h->obj_at_put(0, name0()); | |
| 4444 names_h->obj_at_put(1, name1()); | |
| 4445 break; | |
| 4446 } | |
| 4447 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4448 assert(values_h->length() == 3 && | |
| 4449 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
| 4450 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
| 4451 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
| 4452 "Invalid threadStatus value"); | |
| 1142 | 4453 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4454 3, /* number of substates */ |
| 4455 CHECK_NULL); | |
| 4456 names_h = objArrayHandle(THREAD, r); | |
| 4457 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
| 4458 CHECK_NULL); | |
| 4459 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
| 4460 CHECK_NULL); | |
| 4461 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
| 4462 CHECK_NULL); | |
| 4463 names_h->obj_at_put(0, name0()); | |
| 4464 names_h->obj_at_put(1, name1()); | |
| 4465 names_h->obj_at_put(2, name2()); | |
| 4466 break; | |
| 4467 } | |
| 4468 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4469 assert(values_h->length() == 1 && | |
| 4470 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
| 4471 "Invalid threadStatus value"); | |
| 1142 | 4472 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4473 1, /* only 1 substate */ |
| 4474 CHECK_NULL); | |
| 4475 names_h = objArrayHandle(THREAD, r); | |
| 4476 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
| 4477 names_h->obj_at_put(0, name()); | |
| 4478 break; | |
| 4479 } | |
| 4480 default: | |
| 4481 // Unknown state - probably incompatible JDK version | |
| 4482 return NULL; | |
| 4483 } | |
| 4484 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
| 4485 } | |
| 4486 JVM_END | |
| 4487 | |
| 4488 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
| 4489 { | |
| 4490 memset(info, 0, sizeof(info_size)); | |
| 4491 | |
| 4492 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
| 4493 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4494 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4495 | |
| 4496 // when we add a new capability in the jvm_version_info struct, we should also | |
| 4497 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
| 4498 // counter defined in runtimeService.cpp. | |
| 4499 info->is_attachable = AttachListener::is_attach_supported(); | |
| 4500 } | |
| 4501 JVM_END |