Mercurial > hg > truffle
annotate src/share/vm/prims/jvm.cpp @ 20804:7848fc12602b
Merge with jdk8u40-b25
| author | Gilles Duboscq <gilles.m.duboscq@oracle.com> |
|---|---|
| date | Tue, 07 Apr 2015 14:58:49 +0200 |
| parents | 2a69cbe850a8 d4caf9c96afd |
| children | be896a1983c0 |
| 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" | |
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27 #include "classfile/classLoaderExt.hpp" |
| 1972 | 28 #include "classfile/javaAssertions.hpp" |
| 29 #include "classfile/javaClasses.hpp" | |
| 30 #include "classfile/symbolTable.hpp" | |
| 31 #include "classfile/systemDictionary.hpp" | |
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32 #if INCLUDE_CDS |
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33 #include "classfile/sharedClassUtil.hpp" |
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34 #include "classfile/systemDictionaryShared.hpp" |
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35 #endif |
| 1972 | 36 #include "classfile/vmSymbols.hpp" |
| 37 #include "gc_interface/collectedHeap.inline.hpp" | |
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38 #include "interpreter/bytecode.hpp" |
| 1972 | 39 #include "memory/oopFactory.hpp" |
| 40 #include "memory/universe.inline.hpp" | |
| 3938 | 41 #include "oops/fieldStreams.hpp" |
| 1972 | 42 #include "oops/instanceKlass.hpp" |
| 43 #include "oops/objArrayKlass.hpp" | |
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44 #include "oops/method.hpp" |
| 1972 | 45 #include "prims/jvm.h" |
| 46 #include "prims/jvm_misc.hpp" | |
| 47 #include "prims/jvmtiExport.hpp" | |
| 48 #include "prims/jvmtiThreadState.hpp" | |
| 49 #include "prims/nativeLookup.hpp" | |
| 50 #include "prims/privilegedStack.hpp" | |
| 51 #include "runtime/arguments.hpp" | |
| 52 #include "runtime/dtraceJSDT.hpp" | |
| 53 #include "runtime/handles.inline.hpp" | |
| 54 #include "runtime/init.hpp" | |
| 55 #include "runtime/interfaceSupport.hpp" | |
| 56 #include "runtime/java.hpp" | |
| 57 #include "runtime/javaCalls.hpp" | |
| 58 #include "runtime/jfieldIDWorkaround.hpp" | |
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59 #include "runtime/orderAccess.inline.hpp" |
| 1972 | 60 #include "runtime/os.hpp" |
| 61 #include "runtime/perfData.hpp" | |
| 62 #include "runtime/reflection.hpp" | |
| 63 #include "runtime/vframe.hpp" | |
| 64 #include "runtime/vm_operations.hpp" | |
| 65 #include "services/attachListener.hpp" | |
| 66 #include "services/management.hpp" | |
| 67 #include "services/threadService.hpp" | |
| 10405 | 68 #include "trace/tracing.hpp" |
| 1972 | 69 #include "utilities/copy.hpp" |
| 70 #include "utilities/defaultStream.hpp" | |
| 71 #include "utilities/dtrace.hpp" | |
| 72 #include "utilities/events.hpp" | |
| 73 #include "utilities/histogram.hpp" | |
| 74 #include "utilities/top.hpp" | |
| 75 #include "utilities/utf8.hpp" | |
| 76 #ifdef TARGET_OS_FAMILY_linux | |
| 77 # include "jvm_linux.h" | |
| 78 #endif | |
| 79 #ifdef TARGET_OS_FAMILY_solaris | |
| 80 # include "jvm_solaris.h" | |
| 81 #endif | |
| 82 #ifdef TARGET_OS_FAMILY_windows | |
| 83 # include "jvm_windows.h" | |
| 84 #endif | |
| 14411 | 85 #ifdef TARGET_OS_FAMILY_aix |
| 86 # include "jvm_aix.h" | |
| 87 #endif | |
| 3960 | 88 #ifdef TARGET_OS_FAMILY_bsd |
| 89 # include "jvm_bsd.h" | |
| 90 #endif | |
| 1972 | 91 |
| 0 | 92 #include <errno.h> |
| 93 | |
| 4006 | 94 #ifndef USDT2 |
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95 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__begin, long long); |
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96 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__end, int); |
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97 HS_DTRACE_PROBE_DECL0(hotspot, thread__yield); |
| 4006 | 98 #endif /* !USDT2 */ |
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99 |
| 0 | 100 /* |
| 101 NOTE about use of any ctor or function call that can trigger a safepoint/GC: | |
| 102 such ctors and calls MUST NOT come between an oop declaration/init and its | |
| 103 usage because if objects are move this may cause various memory stomps, bus | |
| 104 errors and segfaults. Here is a cookbook for causing so called "naked oop | |
| 105 failures": | |
| 106 | |
| 107 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> { | |
| 108 JVMWrapper("JVM_GetClassDeclaredFields"); | |
| 109 | |
| 110 // Object address to be held directly in mirror & not visible to GC | |
| 111 oop mirror = JNIHandles::resolve_non_null(ofClass); | |
| 112 | |
| 113 // If this ctor can hit a safepoint, moving objects around, then | |
| 114 ComplexConstructor foo; | |
| 115 | |
| 116 // Boom! mirror may point to JUNK instead of the intended object | |
| 117 (some dereference of mirror) | |
| 118 | |
| 119 // Here's another call that may block for GC, making mirror stale | |
| 120 MutexLocker ml(some_lock); | |
| 121 | |
| 122 // And here's an initializer that can result in a stale oop | |
| 123 // all in one step. | |
| 124 oop o = call_that_can_throw_exception(TRAPS); | |
| 125 | |
| 126 | |
| 127 The solution is to keep the oop declaration BELOW the ctor or function | |
| 128 call that might cause a GC, do another resolve to reassign the oop, or | |
| 129 consider use of a Handle instead of an oop so there is immunity from object | |
| 130 motion. But note that the "QUICK" entries below do not have a handlemark | |
| 131 and thus can only support use of handles passed in. | |
| 132 */ | |
| 133 | |
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134 static void trace_class_resolution_impl(Klass* to_class, TRAPS) { |
| 0 | 135 ResourceMark rm; |
| 136 int line_number = -1; | |
| 137 const char * source_file = NULL; | |
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138 const char * trace = "explicit"; |
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139 InstanceKlass* caller = NULL; |
| 0 | 140 JavaThread* jthread = JavaThread::current(); |
| 141 if (jthread->has_last_Java_frame()) { | |
| 142 vframeStream vfst(jthread); | |
| 143 | |
| 144 // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames | |
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145 TempNewSymbol access_controller = SymbolTable::new_symbol("java/security/AccessController", CHECK); |
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146 Klass* access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); |
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147 TempNewSymbol privileged_action = SymbolTable::new_symbol("java/security/PrivilegedAction", CHECK); |
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148 Klass* privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); |
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149 |
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150 Method* last_caller = NULL; |
| 0 | 151 |
| 152 while (!vfst.at_end()) { | |
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153 Method* m = vfst.method(); |
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154 if (!vfst.method()->method_holder()->is_subclass_of(SystemDictionary::ClassLoader_klass())&& |
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155 !vfst.method()->method_holder()->is_subclass_of(access_controller_klass) && |
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156 !vfst.method()->method_holder()->is_subclass_of(privileged_action_klass)) { |
| 0 | 157 break; |
| 158 } | |
| 159 last_caller = m; | |
| 160 vfst.next(); | |
| 161 } | |
| 162 // if this is called from Class.forName0 and that is called from Class.forName, | |
| 163 // then print the caller of Class.forName. If this is Class.loadClass, then print | |
| 164 // that caller, otherwise keep quiet since this should be picked up elsewhere. | |
| 165 bool found_it = false; | |
| 166 if (!vfst.at_end() && | |
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167 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
| 0 | 168 vfst.method()->name() == vmSymbols::forName0_name()) { |
| 169 vfst.next(); | |
| 170 if (!vfst.at_end() && | |
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171 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class() && |
| 0 | 172 vfst.method()->name() == vmSymbols::forName_name()) { |
| 173 vfst.next(); | |
| 174 found_it = true; | |
| 175 } | |
| 176 } else if (last_caller != NULL && | |
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177 last_caller->method_holder()->name() == |
| 0 | 178 vmSymbols::java_lang_ClassLoader() && |
| 179 (last_caller->name() == vmSymbols::loadClassInternal_name() || | |
| 180 last_caller->name() == vmSymbols::loadClass_name())) { | |
| 181 found_it = true; | |
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182 } else if (!vfst.at_end()) { |
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183 if (vfst.method()->is_native()) { |
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184 // JNI call |
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185 found_it = true; |
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186 } |
| 0 | 187 } |
| 188 if (found_it && !vfst.at_end()) { | |
| 189 // found the caller | |
| 190 caller = vfst.method()->method_holder(); | |
| 191 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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192 if (line_number == -1) { |
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193 // show method name if it's a native method |
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194 trace = vfst.method()->name_and_sig_as_C_string(); |
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195 } |
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196 Symbol* s = caller->source_file_name(); |
| 0 | 197 if (s != NULL) { |
| 198 source_file = s->as_C_string(); | |
| 199 } | |
| 200 } | |
| 201 } | |
| 202 if (caller != NULL) { | |
| 203 if (to_class != caller) { | |
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204 const char * from = caller->external_name(); |
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205 const char * to = to_class->external_name(); |
| 0 | 206 // print in a single call to reduce interleaving between threads |
| 207 if (source_file != NULL) { | |
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208 tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace); |
| 0 | 209 } else { |
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210 tty->print("RESOLVE %s %s (%s)\n", from, to, trace); |
| 0 | 211 } |
| 212 } | |
| 213 } | |
| 214 } | |
| 215 | |
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216 void trace_class_resolution(Klass* to_class) { |
| 0 | 217 EXCEPTION_MARK; |
| 218 trace_class_resolution_impl(to_class, THREAD); | |
| 219 if (HAS_PENDING_EXCEPTION) { | |
| 220 CLEAR_PENDING_EXCEPTION; | |
| 221 } | |
| 222 } | |
| 223 | |
| 224 // Wrapper to trace JVM functions | |
| 225 | |
| 226 #ifdef ASSERT | |
| 227 class JVMTraceWrapper : public StackObj { | |
| 228 public: | |
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229 JVMTraceWrapper(const char* format, ...) ATTRIBUTE_PRINTF(2, 3) { |
| 0 | 230 if (TraceJVMCalls) { |
| 231 va_list ap; | |
| 232 va_start(ap, format); | |
| 233 tty->print("JVM "); | |
| 234 tty->vprint_cr(format, ap); | |
| 235 va_end(ap); | |
| 236 } | |
| 237 } | |
| 238 }; | |
| 239 | |
| 240 Histogram* JVMHistogram; | |
| 241 volatile jint JVMHistogram_lock = 0; | |
| 242 | |
| 243 class JVMHistogramElement : public HistogramElement { | |
| 244 public: | |
| 245 JVMHistogramElement(const char* name); | |
| 246 }; | |
| 247 | |
| 248 JVMHistogramElement::JVMHistogramElement(const char* elementName) { | |
| 249 _name = elementName; | |
| 250 uintx count = 0; | |
| 251 | |
| 252 while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) { | |
| 253 while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) { | |
| 254 count +=1; | |
| 255 if ( (WarnOnStalledSpinLock > 0) | |
| 256 && (count % WarnOnStalledSpinLock == 0)) { | |
| 257 warning("JVMHistogram_lock seems to be stalled"); | |
| 258 } | |
| 259 } | |
| 260 } | |
| 261 | |
| 262 if(JVMHistogram == NULL) | |
| 263 JVMHistogram = new Histogram("JVM Call Counts",100); | |
| 264 | |
| 265 JVMHistogram->add_element(this); | |
| 266 Atomic::dec(&JVMHistogram_lock); | |
| 267 } | |
| 268 | |
| 269 #define JVMCountWrapper(arg) \ | |
| 270 static JVMHistogramElement* e = new JVMHistogramElement(arg); \ | |
| 271 if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen! | |
| 272 | |
| 273 #define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) | |
| 274 #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) | |
| 275 #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) | |
| 276 #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) | |
| 277 #else | |
| 278 #define JVMWrapper(arg1) | |
| 279 #define JVMWrapper2(arg1, arg2) | |
| 280 #define JVMWrapper3(arg1, arg2, arg3) | |
| 281 #define JVMWrapper4(arg1, arg2, arg3, arg4) | |
| 282 #endif | |
| 283 | |
| 284 | |
| 285 // Interface version ///////////////////////////////////////////////////////////////////// | |
| 286 | |
| 287 | |
| 288 JVM_LEAF(jint, JVM_GetInterfaceVersion()) | |
| 289 return JVM_INTERFACE_VERSION; | |
| 290 JVM_END | |
| 291 | |
| 292 | |
| 293 // java.lang.System ////////////////////////////////////////////////////////////////////// | |
| 294 | |
| 295 | |
| 296 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored)) | |
| 297 JVMWrapper("JVM_CurrentTimeMillis"); | |
| 298 return os::javaTimeMillis(); | |
| 299 JVM_END | |
| 300 | |
| 301 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored)) | |
| 302 JVMWrapper("JVM_NanoTime"); | |
| 303 return os::javaTimeNanos(); | |
| 304 JVM_END | |
| 305 | |
| 306 | |
| 307 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, | |
| 308 jobject dst, jint dst_pos, jint length)) | |
| 309 JVMWrapper("JVM_ArrayCopy"); | |
| 310 // Check if we have null pointers | |
| 311 if (src == NULL || dst == NULL) { | |
| 312 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 313 } | |
| 314 arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); | |
| 315 arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); | |
| 316 assert(s->is_oop(), "JVM_ArrayCopy: src not an oop"); | |
| 317 assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); | |
| 318 // Do copy | |
| 6983 | 319 s->klass()->copy_array(s, src_pos, d, dst_pos, length, thread); |
| 0 | 320 JVM_END |
| 321 | |
| 322 | |
| 323 static void set_property(Handle props, const char* key, const char* value, TRAPS) { | |
| 324 JavaValue r(T_OBJECT); | |
| 325 // public synchronized Object put(Object key, Object value); | |
| 326 HandleMark hm(THREAD); | |
| 327 Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK); | |
| 328 Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK); | |
| 329 JavaCalls::call_virtual(&r, | |
| 330 props, | |
| 1142 | 331 KlassHandle(THREAD, SystemDictionary::Properties_klass()), |
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332 vmSymbols::put_name(), |
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333 vmSymbols::object_object_object_signature(), |
| 0 | 334 key_str, |
| 335 value_str, | |
| 336 THREAD); | |
| 337 } | |
| 338 | |
| 339 | |
| 340 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties)); | |
| 341 | |
| 342 | |
| 343 JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties)) | |
| 344 JVMWrapper("JVM_InitProperties"); | |
| 345 ResourceMark rm; | |
| 346 | |
| 347 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
| 348 | |
| 349 // System property list includes both user set via -D option and | |
| 350 // jvm system specific properties. | |
| 351 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
| 352 PUTPROP(props, p->key(), p->value()); | |
| 353 } | |
| 354 | |
| 355 // Convert the -XX:MaxDirectMemorySize= command line flag | |
| 356 // to the sun.nio.MaxDirectMemorySize property. | |
| 357 // Do this after setting user properties to prevent people | |
| 358 // from setting the value with a -D option, as requested. | |
| 359 { | |
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360 if (FLAG_IS_DEFAULT(MaxDirectMemorySize)) { |
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361 PUTPROP(props, "sun.nio.MaxDirectMemorySize", "-1"); |
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362 } else { |
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363 char as_chars[256]; |
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364 jio_snprintf(as_chars, sizeof(as_chars), UINTX_FORMAT, MaxDirectMemorySize); |
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365 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); |
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366 } |
| 0 | 367 } |
| 368 | |
| 369 // JVM monitoring and management support | |
| 370 // Add the sun.management.compiler property for the compiler's name | |
| 371 { | |
| 372 #undef CSIZE | |
| 373 #if defined(_LP64) || defined(_WIN64) | |
| 374 #define CSIZE "64-Bit " | |
| 375 #else | |
| 376 #define CSIZE | |
| 377 #endif // 64bit | |
| 378 | |
| 379 #ifdef TIERED | |
| 380 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; | |
| 381 #else | |
| 382 #if defined(COMPILER1) | |
| 383 const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; | |
| 384 #elif defined(COMPILER2) | |
| 385 const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; | |
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386 #elif defined(GRAAL) |
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387 const char* compiler_name = "HotSpot " CSIZE "Graal Compiler"; |
| 0 | 388 #else |
| 389 const char* compiler_name = ""; | |
| 390 #endif // compilers | |
| 391 #endif // TIERED | |
| 392 | |
| 393 if (*compiler_name != '\0' && | |
| 394 (Arguments::mode() != Arguments::_int)) { | |
| 395 PUTPROP(props, "sun.management.compiler", compiler_name); | |
| 396 } | |
| 397 } | |
| 398 | |
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399 const char* enableSharedLookupCache = "false"; |
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400 #if INCLUDE_CDS |
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401 if (ClassLoaderExt::is_lookup_cache_enabled()) { |
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402 enableSharedLookupCache = "true"; |
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403 } |
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404 #endif |
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405 PUTPROP(props, "sun.cds.enableSharedLookupCache", enableSharedLookupCache); |
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406 |
| 0 | 407 return properties; |
| 408 JVM_END | |
| 409 | |
| 410 | |
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411 /* |
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412 * Return the temporary directory that the VM uses for the attach |
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413 * and perf data files. |
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414 * |
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415 * It is important that this directory is well-known and the |
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416 * same for all VM instances. It cannot be affected by configuration |
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417 * variables such as java.io.tmpdir. |
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418 */ |
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419 JVM_ENTRY(jstring, JVM_GetTemporaryDirectory(JNIEnv *env)) |
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420 JVMWrapper("JVM_GetTemporaryDirectory"); |
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421 HandleMark hm(THREAD); |
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422 const char* temp_dir = os::get_temp_directory(); |
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423 Handle h = java_lang_String::create_from_platform_dependent_str(temp_dir, CHECK_NULL); |
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424 return (jstring) JNIHandles::make_local(env, h()); |
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425 JVM_END |
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426 |
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427 |
| 0 | 428 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// |
| 429 | |
| 430 extern volatile jint vm_created; | |
| 431 | |
| 432 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
| 433 if (vm_created != 0 && (code == 0)) { | |
| 434 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
| 435 Universe::run_finalizers_on_exit(); | |
| 436 } | |
| 437 before_exit(thread); | |
| 438 vm_exit(code); | |
| 439 JVM_END | |
| 440 | |
| 441 | |
| 442 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
| 443 before_exit(thread); | |
| 444 vm_exit(code); | |
| 445 JVM_END | |
| 446 | |
| 447 | |
| 448 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
| 449 register_on_exit_function(func); | |
| 450 JVM_END | |
| 451 | |
| 452 | |
| 453 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
| 454 JVMWrapper("JVM_GC"); | |
| 455 if (!DisableExplicitGC) { | |
| 456 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
| 457 } | |
| 458 JVM_END | |
| 459 | |
| 460 | |
| 461 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
| 462 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
| 463 return Universe::heap()->millis_since_last_gc(); | |
| 464 JVM_END | |
| 465 | |
| 466 | |
| 467 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
| 468 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
| 469 JVM_END | |
| 470 | |
| 471 | |
| 472 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
| 473 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
| 474 JVM_END | |
| 475 | |
| 476 static inline jlong convert_size_t_to_jlong(size_t val) { | |
| 477 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
| 478 NOT_LP64 (return (jlong)val;) | |
| 479 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
| 480 } | |
| 481 | |
| 482 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
| 483 JVMWrapper("JVM_TotalMemory"); | |
| 484 size_t n = Universe::heap()->capacity(); | |
| 485 return convert_size_t_to_jlong(n); | |
| 486 JVM_END | |
| 487 | |
| 488 | |
| 489 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
| 490 JVMWrapper("JVM_FreeMemory"); | |
| 491 CollectedHeap* ch = Universe::heap(); | |
|
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492 size_t n; |
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493 { |
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494 MutexLocker x(Heap_lock); |
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495 n = ch->capacity() - ch->used(); |
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496 } |
| 0 | 497 return convert_size_t_to_jlong(n); |
| 498 JVM_END | |
| 499 | |
| 500 | |
| 501 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
| 502 JVMWrapper("JVM_MaxMemory"); | |
| 503 size_t n = Universe::heap()->max_capacity(); | |
| 504 return convert_size_t_to_jlong(n); | |
| 505 JVM_END | |
| 506 | |
| 507 | |
| 508 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
| 509 JVMWrapper("JVM_ActiveProcessorCount"); | |
| 510 return os::active_processor_count(); | |
| 511 JVM_END | |
| 512 | |
| 513 | |
| 514 | |
| 515 // java.lang.Throwable ////////////////////////////////////////////////////// | |
| 516 | |
| 517 | |
| 518 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
| 519 JVMWrapper("JVM_FillInStackTrace"); | |
| 520 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
| 521 java_lang_Throwable::fill_in_stack_trace(exception); | |
| 522 JVM_END | |
| 523 | |
| 524 | |
| 525 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
| 526 JVMWrapper("JVM_GetStackTraceDepth"); | |
| 527 oop exception = JNIHandles::resolve(throwable); | |
| 528 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
| 529 JVM_END | |
| 530 | |
| 531 | |
| 532 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
| 533 JVMWrapper("JVM_GetStackTraceElement"); | |
| 534 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
| 535 oop exception = JNIHandles::resolve(throwable); | |
| 536 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
| 537 return JNIHandles::make_local(env, element); | |
| 538 JVM_END | |
| 539 | |
| 540 | |
| 541 // java.lang.Object /////////////////////////////////////////////// | |
| 542 | |
| 543 | |
| 544 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
| 545 JVMWrapper("JVM_IHashCode"); | |
| 546 // as implemented in the classic virtual machine; return 0 if object is NULL | |
| 547 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
| 548 JVM_END | |
| 549 | |
| 550 | |
| 551 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
| 552 JVMWrapper("JVM_MonitorWait"); | |
| 553 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 554 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
| 555 if (JvmtiExport::should_post_monitor_wait()) { | |
| 556 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
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557 |
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558 // The current thread already owns the monitor and it has not yet |
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559 // been added to the wait queue so the current thread cannot be |
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560 // made the successor. This means that the JVMTI_EVENT_MONITOR_WAIT |
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561 // event handler cannot accidentally consume an unpark() meant for |
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562 // the ParkEvent associated with this ObjectMonitor. |
| 0 | 563 } |
| 564 ObjectSynchronizer::wait(obj, ms, CHECK); | |
| 565 JVM_END | |
| 566 | |
| 567 | |
| 568 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
| 569 JVMWrapper("JVM_MonitorNotify"); | |
| 570 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 571 ObjectSynchronizer::notify(obj, CHECK); | |
| 572 JVM_END | |
| 573 | |
| 574 | |
| 575 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
| 576 JVMWrapper("JVM_MonitorNotifyAll"); | |
| 577 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 578 ObjectSynchronizer::notifyall(obj, CHECK); | |
| 579 JVM_END | |
| 580 | |
| 581 | |
| 582 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
| 583 JVMWrapper("JVM_Clone"); | |
| 584 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 585 const KlassHandle klass (THREAD, obj->klass()); | |
| 586 JvmtiVMObjectAllocEventCollector oam; | |
| 587 | |
| 588 #ifdef ASSERT | |
| 589 // Just checking that the cloneable flag is set correct | |
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590 if (obj->is_array()) { |
| 0 | 591 guarantee(klass->is_cloneable(), "all arrays are cloneable"); |
| 592 } else { | |
| 593 guarantee(obj->is_instance(), "should be instanceOop"); | |
| 1142 | 594 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
| 0 | 595 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
| 596 } | |
| 597 #endif | |
| 598 | |
| 599 // Check if class of obj supports the Cloneable interface. | |
| 600 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
| 601 if (!klass->is_cloneable()) { | |
| 602 ResourceMark rm(THREAD); | |
| 603 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
| 604 } | |
| 605 | |
| 606 // Make shallow object copy | |
| 607 const int size = obj->size(); | |
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608 oop new_obj_oop = NULL; |
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609 if (obj->is_array()) { |
| 0 | 610 const int length = ((arrayOop)obj())->length(); |
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611 new_obj_oop = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); |
| 0 | 612 } else { |
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613 new_obj_oop = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); |
| 0 | 614 } |
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615 |
| 0 | 616 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread |
| 617 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
| 618 // be suspended in the middle of copying the pointer and end up with parts | |
| 619 // of two different pointers in the field. Subsequent dereferences will crash. | |
| 620 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
| 621 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
| 622 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
| 623 // The same is true of StubRoutines::object_copy and the various oop_copy | |
| 624 // variants, and of the code generated by the inline_native_clone intrinsic. | |
| 625 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
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626 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj_oop, |
| 0 | 627 (size_t)align_object_size(size) / HeapWordsPerLong); |
| 628 // Clear the header | |
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629 new_obj_oop->init_mark(); |
| 0 | 630 |
| 631 // Store check (mark entire object and let gc sort it out) | |
| 632 BarrierSet* bs = Universe::heap()->barrier_set(); | |
| 633 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
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634 bs->write_region(MemRegion((HeapWord*)new_obj_oop, size)); |
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635 |
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636 Handle new_obj(THREAD, new_obj_oop); |
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637 // Special handling for MemberNames. Since they contain Method* metadata, they |
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638 // must be registered so that RedefineClasses can fix metadata contained in them. |
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639 if (java_lang_invoke_MemberName::is_instance(new_obj()) && |
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|
640 java_lang_invoke_MemberName::is_method(new_obj())) { |
|
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|
641 Method* method = (Method*)java_lang_invoke_MemberName::vmtarget(new_obj()); |
|
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
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20608
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|
642 // MemberName may be unresolved, so doesn't need registration until resolved. |
|
fe34c5ab0b35
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|
643 if (method != NULL) { |
|
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8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
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diff
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|
644 methodHandle m(THREAD, method); |
|
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8042235: redefining method used by multiple MethodHandles crashes VM
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parents:
20608
diff
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|
645 // This can safepoint and redefine method, so need both new_obj and method |
|
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20608
diff
changeset
|
646 // in a handle, for two different reasons. new_obj can move, method can be |
|
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
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|
647 // deleted if nothing is using it on the stack. |
|
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
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diff
changeset
|
648 m->method_holder()->add_member_name(new_obj()); |
|
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
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20608
diff
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|
649 } |
|
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8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
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20608
diff
changeset
|
650 } |
| 0 | 651 |
| 652 // Caution: this involves a java upcall, so the clone should be | |
| 653 // "gc-robust" by this stage. | |
| 654 if (klass->has_finalizer()) { | |
| 655 assert(obj->is_instance(), "should be instanceOop"); | |
|
20677
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
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changeset
|
656 new_obj_oop = InstanceKlass::register_finalizer(instanceOop(new_obj()), CHECK_NULL); |
|
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
coleenp
parents:
20608
diff
changeset
|
657 new_obj = Handle(THREAD, new_obj_oop); |
| 0 | 658 } |
| 659 | |
|
20677
fe34c5ab0b35
8042235: redefining method used by multiple MethodHandles crashes VM
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diff
changeset
|
660 return JNIHandles::make_local(env, new_obj()); |
| 0 | 661 JVM_END |
| 662 | |
| 663 // java.lang.Compiler //////////////////////////////////////////////////// | |
| 664 | |
| 665 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
| 666 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
| 667 // functions are all silently ignored unless JVM warnings are printed. | |
| 668 | |
| 669 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
| 670 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
| 671 JVM_END | |
| 672 | |
| 673 | |
| 674 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
| 675 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
| 676 return JNI_FALSE; | |
| 677 JVM_END | |
| 678 | |
| 679 | |
| 680 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
| 681 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
| 682 return JNI_FALSE; | |
| 683 JVM_END | |
| 684 | |
| 685 | |
| 686 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
| 687 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
| 688 return JNI_FALSE; | |
| 689 JVM_END | |
| 690 | |
| 691 | |
| 692 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
| 693 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
| 694 return NULL; | |
| 695 JVM_END | |
| 696 | |
| 697 | |
| 698 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
| 699 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
| 700 JVM_END | |
| 701 | |
| 702 | |
| 703 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
| 704 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
| 705 JVM_END | |
| 706 | |
| 707 | |
| 708 | |
| 709 // Error message support ////////////////////////////////////////////////////// | |
| 710 | |
| 711 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
| 712 JVMWrapper("JVM_GetLastErrorString"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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1972
diff
changeset
|
713 return (jint)os::lasterror(buf, len); |
| 0 | 714 JVM_END |
| 715 | |
| 716 | |
| 717 // java.io.File /////////////////////////////////////////////////////////////// | |
| 718 | |
| 719 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
| 720 JVMWrapper2("JVM_NativePath (%s)", path); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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diff
changeset
|
721 return os::native_path(path); |
| 0 | 722 JVM_END |
| 723 | |
| 724 | |
| 725 // Misc. class handling /////////////////////////////////////////////////////////// | |
| 726 | |
| 727 | |
| 728 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
| 729 JVMWrapper("JVM_GetCallerClass"); | |
|
8866
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
730 |
|
12824
615d83933195
8026025: JVM_GetCallerClass allows Reflection.getCallerClass(int depth) to use
dholmes
parents:
12816
diff
changeset
|
731 // Pre-JDK 8 and early builds of JDK 8 don't have a CallerSensitive annotation; or |
|
615d83933195
8026025: JVM_GetCallerClass allows Reflection.getCallerClass(int depth) to use
dholmes
parents:
12816
diff
changeset
|
732 // sun.reflect.Reflection.getCallerClass with a depth parameter is provided |
|
615d83933195
8026025: JVM_GetCallerClass allows Reflection.getCallerClass(int depth) to use
dholmes
parents:
12816
diff
changeset
|
733 // temporarily for existing code to use until a replacement API is defined. |
|
615d83933195
8026025: JVM_GetCallerClass allows Reflection.getCallerClass(int depth) to use
dholmes
parents:
12816
diff
changeset
|
734 if (SystemDictionary::reflect_CallerSensitive_klass() == NULL || depth != JVM_CALLER_DEPTH) { |
|
8866
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
735 Klass* k = thread->security_get_caller_class(depth); |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
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diff
changeset
|
736 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, k->java_mirror()); |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
737 } |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
738 |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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parents:
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diff
changeset
|
739 // Getting the class of the caller frame. |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
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diff
changeset
|
740 // |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
741 // The call stack at this point looks something like this: |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
742 // |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
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diff
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|
743 // [0] [ @CallerSensitive public sun.reflect.Reflection.getCallerClass ] |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
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diff
changeset
|
744 // [1] [ @CallerSensitive API.method ] |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
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8031
diff
changeset
|
745 // [.] [ (skipped intermediate frames) ] |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
746 // [n] [ caller ] |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
747 vframeStream vfst(thread); |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
748 // Cf. LibraryCallKit::inline_native_Reflection_getCallerClass |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
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changeset
|
749 for (int n = 0; !vfst.at_end(); vfst.security_next(), n++) { |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
750 Method* m = vfst.method(); |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
751 assert(m != NULL, "sanity"); |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
752 switch (n) { |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
753 case 0: |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
754 // This must only be called from Reflection.getCallerClass |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
755 if (m->intrinsic_id() != vmIntrinsics::_getCallerClass) { |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
756 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetCallerClass must only be called from Reflection.getCallerClass"); |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
757 } |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
758 // fall-through |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
759 case 1: |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
760 // Frame 0 and 1 must be caller sensitive. |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
761 if (!m->caller_sensitive()) { |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
762 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), err_msg("CallerSensitive annotation expected at frame %d", n)); |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
763 } |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
764 break; |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
765 default: |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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parents:
8031
diff
changeset
|
766 if (!m->is_ignored_by_security_stack_walk()) { |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
767 // We have reached the desired frame; return the holder class. |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
768 return (jclass) JNIHandles::make_local(env, m->method_holder()->java_mirror()); |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
769 } |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
770 break; |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
771 } |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
772 } |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
773 return NULL; |
| 0 | 774 JVM_END |
| 775 | |
| 776 | |
| 777 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
| 778 JVMWrapper("JVM_FindPrimitiveClass"); | |
| 779 oop mirror = NULL; | |
| 780 BasicType t = name2type(utf); | |
| 781 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
| 782 mirror = Universe::java_mirror(t); | |
| 783 } | |
| 784 if (mirror == NULL) { | |
| 785 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
| 786 } else { | |
| 787 return (jclass) JNIHandles::make_local(env, mirror); | |
| 788 } | |
| 789 JVM_END | |
| 790 | |
| 791 | |
| 792 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
| 793 JVMWrapper("JVM_ResolveClass"); | |
| 794 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
| 795 JVM_END | |
| 796 | |
|
878
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
797 |
|
20608
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
798 JVM_ENTRY(jboolean, JVM_KnownToNotExist(JNIEnv *env, jobject loader, const char *classname)) |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
799 JVMWrapper("JVM_KnownToNotExist"); |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
800 #if INCLUDE_CDS |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
801 return ClassLoaderExt::known_to_not_exist(env, loader, classname, CHECK_(false)); |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
802 #else |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
803 return false; |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
804 #endif |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
805 JVM_END |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
806 |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
807 |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
808 JVM_ENTRY(jobjectArray, JVM_GetResourceLookupCacheURLs(JNIEnv *env, jobject loader)) |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
809 JVMWrapper("JVM_GetResourceLookupCacheURLs"); |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
810 #if INCLUDE_CDS |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
811 return ClassLoaderExt::get_lookup_cache_urls(env, loader, CHECK_NULL); |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
812 #else |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
813 return NULL; |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
814 #endif |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
815 JVM_END |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
816 |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
817 |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
818 JVM_ENTRY(jintArray, JVM_GetResourceLookupCache(JNIEnv *env, jobject loader, const char *resource_name)) |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
819 JVMWrapper("JVM_GetResourceLookupCache"); |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
820 #if INCLUDE_CDS |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
821 return ClassLoaderExt::get_lookup_cache(env, loader, resource_name, CHECK_NULL); |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
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diff
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|
822 #else |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
823 return NULL; |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
824 #endif |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
825 JVM_END |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
826 |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
827 |
|
878
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
828 // Returns a class loaded by the bootstrap class loader; or null |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
829 // if not found. ClassNotFoundException is not thrown. |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
830 // |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
831 // Rationale behind JVM_FindClassFromBootLoader |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
832 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
|
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833 // b> because of (a) java.dll has a direct dependecy on the unexported |
|
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834 // private symbol "_JVM_FindClassFromClassLoader@20". |
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835 // c> the launcher cannot use the private symbol as it dynamically opens |
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836 // the entry point, so if something changes, the launcher will fail |
|
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837 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
|
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838 // stable exported interface. |
|
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839 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
|
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840 // signature to change from _JVM_FindClassFromClassLoader@20 to |
|
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841 // JVM_FindClassFromClassLoader and will not be backward compatible |
|
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842 // with older JDKs. |
|
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843 // Thus a public/stable exported entry point is the right solution, |
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844 // public here means public in linker semantics, and is exported only |
|
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845 // to the JDK, and is not intended to be a public API. |
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846 |
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847 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
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848 const char* name)) |
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849 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
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850 |
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851 // Java libraries should ensure that name is never null... |
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852 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
|
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853 // It's impossible to create this class; the name cannot fit |
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854 // into the constant pool. |
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855 return NULL; |
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|
856 } |
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857 |
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858 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
|
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859 Klass* k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
|
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860 if (k == NULL) { |
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861 return NULL; |
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862 } |
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863 |
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864 if (TraceClassResolution) { |
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865 trace_class_resolution(k); |
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866 } |
| 6983 | 867 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
|
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868 JVM_END |
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869 |
| 18051 | 870 // Not used; JVM_FindClassFromCaller replaces this. |
|
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871 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
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872 jboolean init, jobject loader, |
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873 jboolean throwError)) |
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874 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
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875 throwError ? "error" : "exception"); |
| 388 | 876 // Java libraries should ensure that name is never null... |
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877 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
| 388 | 878 // It's impossible to create this class; the name cannot fit |
| 879 // into the constant pool. | |
| 880 if (throwError) { | |
| 881 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 882 } else { | |
| 883 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
| 884 } | |
| 885 } | |
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886 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
| 388 | 887 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
| 888 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 889 Handle(), throwError, THREAD); | |
| 890 | |
| 891 if (TraceClassResolution && result != NULL) { | |
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892 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
| 388 | 893 } |
| 894 return result; | |
| 0 | 895 JVM_END |
| 896 | |
| 18051 | 897 // Find a class with this name in this loader, using the caller's protection domain. |
| 898 JVM_ENTRY(jclass, JVM_FindClassFromCaller(JNIEnv* env, const char* name, | |
| 899 jboolean init, jobject loader, | |
| 900 jclass caller)) | |
| 901 JVMWrapper2("JVM_FindClassFromCaller %s throws ClassNotFoundException", name); | |
| 902 // Java libraries should ensure that name is never null... | |
| 903 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { | |
| 904 // It's impossible to create this class; the name cannot fit | |
| 905 // into the constant pool. | |
| 906 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
| 907 } | |
| 908 | |
| 909 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); | |
| 910 | |
| 911 oop loader_oop = JNIHandles::resolve(loader); | |
| 912 oop from_class = JNIHandles::resolve(caller); | |
| 913 oop protection_domain = NULL; | |
| 914 // If loader is null, shouldn't call ClassLoader.checkPackageAccess; otherwise get | |
| 915 // NPE. Put it in another way, the bootstrap class loader has all permission and | |
| 916 // thus no checkPackageAccess equivalence in the VM class loader. | |
| 917 // The caller is also passed as NULL by the java code if there is no security | |
| 918 // manager to avoid the performance cost of getting the calling class. | |
| 919 if (from_class != NULL && loader_oop != NULL) { | |
| 920 protection_domain = java_lang_Class::as_Klass(from_class)->protection_domain(); | |
| 921 } | |
| 922 | |
| 923 Handle h_loader(THREAD, loader_oop); | |
| 924 Handle h_prot(THREAD, protection_domain); | |
| 925 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 926 h_prot, false, THREAD); | |
| 927 | |
| 928 if (TraceClassResolution && result != NULL) { | |
| 929 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); | |
| 930 } | |
| 931 return result; | |
| 932 JVM_END | |
| 0 | 933 |
| 934 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
| 935 jboolean init, jclass from)) | |
| 936 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
|
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937 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
| 0 | 938 // It's impossible to create this class; the name cannot fit |
| 939 // into the constant pool. | |
| 940 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 941 } | |
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942 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
| 0 | 943 oop from_class_oop = JNIHandles::resolve(from); |
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944 Klass* from_class = (from_class_oop == NULL) |
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945 ? (Klass*)NULL |
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946 : java_lang_Class::as_Klass(from_class_oop); |
| 0 | 947 oop class_loader = NULL; |
| 948 oop protection_domain = NULL; | |
| 949 if (from_class != NULL) { | |
| 6983 | 950 class_loader = from_class->class_loader(); |
| 951 protection_domain = from_class->protection_domain(); | |
| 0 | 952 } |
| 953 Handle h_loader(THREAD, class_loader); | |
| 954 Handle h_prot (THREAD, protection_domain); | |
| 955 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 956 h_prot, true, thread); | |
| 957 | |
| 958 if (TraceClassResolution && result != NULL) { | |
| 959 // this function is generally only used for class loading during verification. | |
| 960 ResourceMark rm; | |
| 961 oop from_mirror = JNIHandles::resolve_non_null(from); | |
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962 Klass* from_class = java_lang_Class::as_Klass(from_mirror); |
| 6983 | 963 const char * from_name = from_class->external_name(); |
| 0 | 964 |
| 965 oop mirror = JNIHandles::resolve_non_null(result); | |
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966 Klass* to_class = java_lang_Class::as_Klass(mirror); |
| 6983 | 967 const char * to = to_class->external_name(); |
| 0 | 968 tty->print("RESOLVE %s %s (verification)\n", from_name, to); |
| 969 } | |
| 970 | |
| 971 return result; | |
| 972 JVM_END | |
| 973 | |
| 974 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
| 975 if (loader.is_null()) { | |
| 976 return; | |
| 977 } | |
| 978 | |
| 979 // check whether the current caller thread holds the lock or not. | |
| 980 // If not, increment the corresponding counter | |
| 981 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
| 982 ObjectSynchronizer::owner_self) { | |
| 983 counter->inc(); | |
| 984 } | |
| 985 } | |
| 986 | |
| 987 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
|
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988 // and JVM_DefineClassWithSourceCond() |
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989 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
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990 jobject loader, const jbyte *buf, |
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991 jsize len, jobject pd, const char *source, |
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992 jboolean verify, TRAPS) { |
|
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993 if (source == NULL) source = "__JVM_DefineClass__"; |
| 0 | 994 |
|
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995 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
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996 JavaThread* jt = (JavaThread*) THREAD; |
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997 |
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998 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
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999 ClassLoader::perf_define_appclass_selftime(), |
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1000 ClassLoader::perf_define_appclasses(), |
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1001 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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1002 jt->get_thread_stat()->perf_timers_addr(), |
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1003 PerfClassTraceTime::DEFINE_CLASS); |
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1004 |
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1005 if (UsePerfData) { |
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1006 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
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1007 } |
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1008 |
| 0 | 1009 // Since exceptions can be thrown, class initialization can take place |
| 1010 // if name is NULL no check for class name in .class stream has to be made. | |
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1011 TempNewSymbol class_name = NULL; |
| 0 | 1012 if (name != NULL) { |
| 1013 const int str_len = (int)strlen(name); | |
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1014 if (str_len > Symbol::max_length()) { |
| 0 | 1015 // It's impossible to create this class; the name cannot fit |
| 1016 // into the constant pool. | |
| 1017 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 1018 } | |
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1019 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
| 0 | 1020 } |
| 1021 | |
| 1022 ResourceMark rm(THREAD); | |
| 1023 ClassFileStream st((u1*) buf, len, (char *)source); | |
| 1024 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
| 1025 if (UsePerfData) { | |
| 1026 is_lock_held_by_thread(class_loader, | |
| 1027 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
| 1028 THREAD); | |
| 1029 } | |
| 1030 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
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1031 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, |
| 0 | 1032 protection_domain, &st, |
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1033 verify != 0, |
| 0 | 1034 CHECK_NULL); |
| 1035 | |
| 1036 if (TraceClassResolution && k != NULL) { | |
| 1037 trace_class_resolution(k); | |
| 1038 } | |
| 1039 | |
| 6983 | 1040 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
| 0 | 1041 } |
| 1042 | |
| 1043 | |
| 1044 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
| 1045 JVMWrapper2("JVM_DefineClass %s", name); | |
| 1046 | |
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1047 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
| 0 | 1048 JVM_END |
| 1049 | |
| 1050 | |
| 1051 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
| 1052 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
| 1053 | |
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1054 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
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1055 JVM_END |
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1056 |
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1057 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
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1058 jobject loader, const jbyte *buf, |
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1059 jsize len, jobject pd, |
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1060 const char *source, jboolean verify)) |
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1061 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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1062 |
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1063 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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1064 JVM_END |
| 0 | 1065 |
| 1066 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
| 1067 JVMWrapper("JVM_FindLoadedClass"); | |
| 1068 ResourceMark rm(THREAD); | |
| 1069 | |
| 1070 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 1071 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
| 1072 | |
| 1073 const char* str = java_lang_String::as_utf8_string(string()); | |
| 1074 // Sanity check, don't expect null | |
| 1075 if (str == NULL) return NULL; | |
| 1076 | |
| 1077 const int str_len = (int)strlen(str); | |
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1078 if (str_len > Symbol::max_length()) { |
| 0 | 1079 // It's impossible to create this class; the name cannot fit |
| 1080 // into the constant pool. | |
| 1081 return NULL; | |
| 1082 } | |
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1083 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
| 0 | 1084 |
| 1085 // Security Note: | |
| 1086 // The Java level wrapper will perform the necessary security check allowing | |
| 1087 // us to pass the NULL as the initiating class loader. | |
| 1088 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
| 1089 if (UsePerfData) { | |
| 1090 is_lock_held_by_thread(h_loader, | |
| 1091 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
| 1092 THREAD); | |
| 1093 } | |
| 1094 | |
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1095 Klass* k = SystemDictionary::find_instance_or_array_klass(klass_name, |
| 0 | 1096 h_loader, |
| 1097 Handle(), | |
| 1098 CHECK_NULL); | |
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1099 #if INCLUDE_CDS |
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1100 if (k == NULL) { |
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1101 // If the class is not already loaded, try to see if it's in the shared |
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1102 // archive for the current classloader (h_loader). |
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1103 instanceKlassHandle ik = SystemDictionaryShared::find_or_load_shared_class( |
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1104 klass_name, h_loader, CHECK_NULL); |
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1105 k = ik(); |
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1106 } |
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1107 #endif |
| 0 | 1108 return (k == NULL) ? NULL : |
| 6983 | 1109 (jclass) JNIHandles::make_local(env, k->java_mirror()); |
| 0 | 1110 JVM_END |
| 1111 | |
| 1112 | |
| 1113 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
| 1114 | |
| 1115 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
| 1116 assert (cls != NULL, "illegal class"); | |
| 1117 JVMWrapper("JVM_GetClassName"); | |
| 1118 JvmtiVMObjectAllocEventCollector oam; | |
| 1119 ResourceMark rm(THREAD); | |
| 1120 const char* name; | |
| 1121 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1122 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
| 1123 } else { | |
| 1124 // Consider caching interned string in Klass | |
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1125 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 0 | 1126 assert(k->is_klass(), "just checking"); |
| 6983 | 1127 name = k->external_name(); |
| 0 | 1128 } |
| 1129 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
| 1130 return (jstring) JNIHandles::make_local(env, result); | |
| 1131 JVM_END | |
| 1132 | |
| 1133 | |
| 1134 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
| 1135 JVMWrapper("JVM_GetClassInterfaces"); | |
| 1136 JvmtiVMObjectAllocEventCollector oam; | |
| 1137 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1138 | |
| 1139 // Special handling for primitive objects | |
| 1140 if (java_lang_Class::is_primitive(mirror)) { | |
| 1141 // Primitive objects does not have any interfaces | |
| 1142 | 1142 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1143 return (jobjectArray) JNIHandles::make_local(env, r); |
| 1144 } | |
| 1145 | |
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1146 KlassHandle klass(thread, java_lang_Class::as_Klass(mirror)); |
| 0 | 1147 // Figure size of result array |
| 1148 int size; | |
| 1149 if (klass->oop_is_instance()) { | |
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1150 size = InstanceKlass::cast(klass())->local_interfaces()->length(); |
| 0 | 1151 } else { |
| 1152 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
| 1153 size = 2; | |
| 1154 } | |
| 1155 | |
| 1156 // Allocate result array | |
| 1142 | 1157 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
| 0 | 1158 objArrayHandle result (THREAD, r); |
| 1159 // Fill in result | |
| 1160 if (klass->oop_is_instance()) { | |
| 1161 // Regular instance klass, fill in all local interfaces | |
| 1162 for (int index = 0; index < size; index++) { | |
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1163 Klass* k = InstanceKlass::cast(klass())->local_interfaces()->at(index); |
| 6983 | 1164 result->obj_at_put(index, k->java_mirror()); |
| 0 | 1165 } |
| 1166 } else { | |
| 1167 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
| 6983 | 1168 result->obj_at_put(0, SystemDictionary::Cloneable_klass()->java_mirror()); |
| 1169 result->obj_at_put(1, SystemDictionary::Serializable_klass()->java_mirror()); | |
| 0 | 1170 } |
| 1171 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1172 JVM_END | |
| 1173 | |
| 1174 | |
| 1175 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
| 1176 JVMWrapper("JVM_GetClassLoader"); | |
| 1177 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1178 return NULL; | |
| 1179 } | |
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1180 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1181 oop loader = k->class_loader(); |
| 0 | 1182 return JNIHandles::make_local(env, loader); |
| 1183 JVM_END | |
| 1184 | |
| 1185 | |
| 1186 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
| 1187 JVMWrapper("JVM_IsInterface"); | |
| 1188 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1189 if (java_lang_Class::is_primitive(mirror)) { | |
| 1190 return JNI_FALSE; | |
| 1191 } | |
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1192 Klass* k = java_lang_Class::as_Klass(mirror); |
| 6983 | 1193 jboolean result = k->is_interface(); |
| 1194 assert(!result || k->oop_is_instance(), | |
| 0 | 1195 "all interfaces are instance types"); |
| 1196 // The compiler intrinsic for isInterface tests the | |
| 1197 // Klass::_access_flags bits in the same way. | |
| 1198 return result; | |
| 1199 JVM_END | |
| 1200 | |
| 1201 | |
| 1202 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
| 1203 JVMWrapper("JVM_GetClassSigners"); | |
| 1204 JvmtiVMObjectAllocEventCollector oam; | |
| 1205 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1206 // There are no signers for primitive types | |
| 1207 return NULL; | |
| 1208 } | |
| 1209 | |
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1210 objArrayOop signers = java_lang_Class::signers(JNIHandles::resolve_non_null(cls)); |
| 0 | 1211 |
| 1212 // If there are no signers set in the class, or if the class | |
| 1213 // is an array, return NULL. | |
| 1214 if (signers == NULL) return NULL; | |
| 1215 | |
| 1216 // copy of the signers array | |
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1217 Klass* element = ObjArrayKlass::cast(signers->klass())->element_klass(); |
| 0 | 1218 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); |
| 1219 for (int index = 0; index < signers->length(); index++) { | |
| 1220 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
| 1221 } | |
| 1222 | |
| 1223 // return the copy | |
| 1224 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
| 1225 JVM_END | |
| 1226 | |
| 1227 | |
| 1228 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
| 1229 JVMWrapper("JVM_SetClassSigners"); | |
| 1230 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1231 // This call is ignored for primitive types and arrays. | |
| 1232 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
| 1233 // be called with an array. Only the bootstrap loader creates arrays. | |
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1234 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1235 if (k->oop_is_instance()) { |
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1236 java_lang_Class::set_signers(k->java_mirror(), objArrayOop(JNIHandles::resolve(signers))); |
| 0 | 1237 } |
| 1238 } | |
| 1239 JVM_END | |
| 1240 | |
| 1241 | |
| 1242 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
| 1243 JVMWrapper("JVM_GetProtectionDomain"); | |
| 1244 if (JNIHandles::resolve(cls) == NULL) { | |
| 1245 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
| 1246 } | |
| 1247 | |
| 1248 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1249 // Primitive types does not have a protection domain. | |
| 1250 return NULL; | |
| 1251 } | |
| 1252 | |
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1253 oop pd = java_lang_Class::protection_domain(JNIHandles::resolve(cls)); |
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1254 return (jobject) JNIHandles::make_local(env, pd); |
| 0 | 1255 JVM_END |
| 1256 | |
| 1257 | |
| 11010 | 1258 static bool is_authorized(Handle context, instanceKlassHandle klass, TRAPS) { |
| 1259 // If there is a security manager and protection domain, check the access | |
| 1260 // in the protection domain, otherwise it is authorized. | |
| 1261 if (java_lang_System::has_security_manager()) { | |
| 1262 | |
| 1263 // For bootstrapping, if pd implies method isn't in the JDK, allow | |
| 1264 // this context to revert to older behavior. | |
| 1265 // In this case the isAuthorized field in AccessControlContext is also not | |
| 1266 // present. | |
| 1267 if (Universe::protection_domain_implies_method() == NULL) { | |
| 1268 return true; | |
| 1269 } | |
| 1270 | |
| 1271 // Whitelist certain access control contexts | |
| 1272 if (java_security_AccessControlContext::is_authorized(context)) { | |
| 1273 return true; | |
| 1274 } | |
| 1275 | |
| 1276 oop prot = klass->protection_domain(); | |
| 1277 if (prot != NULL) { | |
| 1278 // Call pd.implies(new SecurityPermission("createAccessControlContext")) | |
| 1279 // in the new wrapper. | |
| 1280 methodHandle m(THREAD, Universe::protection_domain_implies_method()); | |
| 1281 Handle h_prot(THREAD, prot); | |
| 1282 JavaValue result(T_BOOLEAN); | |
| 1283 JavaCallArguments args(h_prot); | |
| 1284 JavaCalls::call(&result, m, &args, CHECK_false); | |
| 1285 return (result.get_jboolean() != 0); | |
| 1286 } | |
| 1287 } | |
| 1288 return true; | |
| 1289 } | |
| 1290 | |
| 1291 // Create an AccessControlContext with a protection domain with null codesource | |
| 1292 // and null permissions - which gives no permissions. | |
| 1293 oop create_dummy_access_control_context(TRAPS) { | |
| 1294 InstanceKlass* pd_klass = InstanceKlass::cast(SystemDictionary::ProtectionDomain_klass()); | |
| 1295 // new ProtectionDomain(null,null); | |
| 1296 oop null_protection_domain = pd_klass->allocate_instance(CHECK_NULL); | |
| 1297 Handle null_pd(THREAD, null_protection_domain); | |
| 1298 | |
| 1299 // new ProtectionDomain[] {pd}; | |
| 1300 objArrayOop context = oopFactory::new_objArray(pd_klass, 1, CHECK_NULL); | |
| 1301 context->obj_at_put(0, null_pd()); | |
| 1302 | |
| 1303 // new AccessControlContext(new ProtectionDomain[] {pd}) | |
| 1304 objArrayHandle h_context(THREAD, context); | |
| 1305 oop result = java_security_AccessControlContext::create(h_context, false, Handle(), CHECK_NULL); | |
| 1306 return result; | |
| 1307 } | |
| 0 | 1308 |
| 1309 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
| 1310 JVMWrapper("JVM_DoPrivileged"); | |
| 1311 | |
| 1312 if (action == NULL) { | |
| 1313 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
| 1314 } | |
| 1315 | |
| 11010 | 1316 // Compute the frame initiating the do privileged operation and setup the privileged stack |
| 1317 vframeStream vfst(thread); | |
| 1318 vfst.security_get_caller_frame(1); | |
| 1319 | |
| 1320 if (vfst.at_end()) { | |
| 1321 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "no caller?"); | |
| 1322 } | |
| 1323 | |
| 1324 Method* method = vfst.method(); | |
| 1325 instanceKlassHandle klass (THREAD, method->method_holder()); | |
| 1326 | |
| 1327 // Check that action object understands "Object run()" | |
| 1328 Handle h_context; | |
| 1329 if (context != NULL) { | |
| 1330 h_context = Handle(THREAD, JNIHandles::resolve(context)); | |
| 1331 bool authorized = is_authorized(h_context, klass, CHECK_NULL); | |
| 1332 if (!authorized) { | |
| 1333 // Create an unprivileged access control object and call it's run function | |
| 1334 // instead. | |
| 1335 oop noprivs = create_dummy_access_control_context(CHECK_NULL); | |
| 1336 h_context = Handle(THREAD, noprivs); | |
| 1337 } | |
| 1338 } | |
| 0 | 1339 |
| 1340 // Check that action object understands "Object run()" | |
| 1341 Handle object (THREAD, JNIHandles::resolve(action)); | |
| 1342 | |
| 1343 // get run() method | |
| 6983 | 1344 Method* m_oop = object->klass()->uncached_lookup_method( |
| 0 | 1345 vmSymbols::run_method_name(), |
|
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1346 vmSymbols::void_object_signature(), |
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1347 Klass::normal); |
| 0 | 1348 methodHandle m (THREAD, m_oop); |
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1349 if (m.is_null() || !m->is_method() || !m()->is_public() || m()->is_static()) { |
| 0 | 1350 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); |
| 1351 } | |
| 1352 | |
| 11010 | 1353 // Stack allocated list of privileged stack elements |
| 1354 PrivilegedElement pi; | |
| 0 | 1355 if (!vfst.at_end()) { |
| 11010 | 1356 pi.initialize(&vfst, h_context(), thread->privileged_stack_top(), CHECK_NULL); |
| 0 | 1357 thread->set_privileged_stack_top(&pi); |
| 1358 } | |
| 1359 | |
| 1360 | |
| 1361 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
| 1362 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
| 1363 Handle pending_exception; | |
| 1364 JavaValue result(T_OBJECT); | |
| 1365 JavaCallArguments args(object); | |
| 1366 JavaCalls::call(&result, m, &args, THREAD); | |
| 1367 | |
| 1368 // done with action, remove ourselves from the list | |
| 1369 if (!vfst.at_end()) { | |
| 1370 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
| 1371 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
| 1372 } | |
| 1373 | |
| 1374 if (HAS_PENDING_EXCEPTION) { | |
| 1375 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
| 1376 CLEAR_PENDING_EXCEPTION; | |
| 1377 | |
| 1142 | 1378 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
| 1379 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
| 0 | 1380 // Throw a java.security.PrivilegedActionException(Exception e) exception |
| 1381 JavaCallArguments args(pending_exception); | |
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1382 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1383 vmSymbols::exception_void_signature(), |
| 0 | 1384 &args); |
| 1385 } | |
| 1386 } | |
| 1387 | |
| 1388 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
| 1389 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
| 1390 JVM_END | |
| 1391 | |
| 1392 | |
| 1393 // Returns the inherited_access_control_context field of the running thread. | |
| 1394 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1395 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
| 1396 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
| 1397 return JNIHandles::make_local(env, result); | |
| 1398 JVM_END | |
| 1399 | |
| 1400 class RegisterArrayForGC { | |
| 1401 private: | |
| 1402 JavaThread *_thread; | |
| 1403 public: | |
| 1404 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
| 1405 _thread = thread; | |
| 1406 _thread->register_array_for_gc(array); | |
| 1407 } | |
| 1408 | |
| 1409 ~RegisterArrayForGC() { | |
| 1410 _thread->register_array_for_gc(NULL); | |
| 1411 } | |
| 1412 }; | |
| 1413 | |
| 1414 | |
| 1415 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1416 JVMWrapper("JVM_GetStackAccessControlContext"); | |
| 1417 if (!UsePrivilegedStack) return NULL; | |
| 1418 | |
| 1419 ResourceMark rm(THREAD); | |
| 1420 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
| 1421 JvmtiVMObjectAllocEventCollector oam; | |
| 1422 | |
| 1423 // count the protection domains on the execution stack. We collapse | |
| 1424 // duplicate consecutive protection domains into a single one, as | |
| 1425 // well as stopping when we hit a privileged frame. | |
| 1426 | |
| 1427 // Use vframeStream to iterate through Java frames | |
| 1428 vframeStream vfst(thread); | |
| 1429 | |
| 1430 oop previous_protection_domain = NULL; | |
| 1431 Handle privileged_context(thread, NULL); | |
| 1432 bool is_privileged = false; | |
| 1433 oop protection_domain = NULL; | |
| 1434 | |
| 1435 for(; !vfst.at_end(); vfst.next()) { | |
| 1436 // get method of frame | |
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1437 Method* method = vfst.method(); |
| 0 | 1438 intptr_t* frame_id = vfst.frame_id(); |
| 1439 | |
| 1440 // check the privileged frames to see if we have a match | |
| 1441 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
| 1442 // this frame is privileged | |
| 1443 is_privileged = true; | |
| 1444 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
| 1445 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
| 1446 } else { | |
|
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1447 protection_domain = method->method_holder()->protection_domain(); |
| 0 | 1448 } |
| 1449 | |
| 1450 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
| 1451 local_array->push(protection_domain); | |
| 1452 previous_protection_domain = protection_domain; | |
| 1453 } | |
| 1454 | |
| 1455 if (is_privileged) break; | |
| 1456 } | |
| 1457 | |
| 1458 | |
| 1459 // either all the domains on the stack were system domains, or | |
| 1460 // we had a privileged system domain | |
| 1461 if (local_array->is_empty()) { | |
| 1462 if (is_privileged && privileged_context.is_null()) return NULL; | |
| 1463 | |
| 1464 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
| 1465 return JNIHandles::make_local(env, result); | |
| 1466 } | |
| 1467 | |
| 1468 // the resource area must be registered in case of a gc | |
| 1469 RegisterArrayForGC ragc(thread, local_array); | |
| 1142 | 1470 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
| 0 | 1471 local_array->length(), CHECK_NULL); |
| 1472 objArrayHandle h_context(thread, context); | |
| 1473 for (int index = 0; index < local_array->length(); index++) { | |
| 1474 h_context->obj_at_put(index, local_array->at(index)); | |
| 1475 } | |
| 1476 | |
| 1477 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
| 1478 | |
| 1479 return JNIHandles::make_local(env, result); | |
| 1480 JVM_END | |
| 1481 | |
| 1482 | |
| 1483 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
| 1484 JVMWrapper("JVM_IsArrayClass"); | |
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1485 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1486 return (k != NULL) && k->oop_is_array() ? true : false; |
| 0 | 1487 JVM_END |
| 1488 | |
| 1489 | |
| 1490 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
| 1491 JVMWrapper("JVM_IsPrimitiveClass"); | |
| 1492 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1493 return (jboolean) java_lang_Class::is_primitive(mirror); | |
| 1494 JVM_END | |
| 1495 | |
| 1496 | |
| 1497 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
| 1498 JVMWrapper("JVM_GetComponentType"); | |
| 1499 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1500 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
| 1501 return (jclass) JNIHandles::make_local(env, result); | |
| 1502 JVM_END | |
| 1503 | |
| 1504 | |
| 1505 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
| 1506 JVMWrapper("JVM_GetClassModifiers"); | |
| 1507 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1508 // Primitive type | |
| 1509 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 1510 } | |
| 1511 | |
| 6983 | 1512 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 1513 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); |
| 1514 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
| 1515 return k->modifier_flags(); | |
| 1516 JVM_END | |
| 1517 | |
| 1518 | |
| 1519 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
| 1520 | |
| 1521 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
| 1522 JvmtiVMObjectAllocEventCollector oam; | |
| 1523 // ofClass is a reference to a java_lang_Class object. The mirror object | |
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1524 // of an InstanceKlass |
| 0 | 1525 |
| 1526 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1527 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
| 1142 | 1528 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1529 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1530 } | |
| 1531 | |
|
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1532 instanceKlassHandle k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
|
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1533 InnerClassesIterator iter(k); |
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1534 |
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1535 if (iter.length() == 0) { |
| 0 | 1536 // Neither an inner nor outer class |
| 1142 | 1537 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1538 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1539 } | |
| 1540 | |
| 1541 // find inner class info | |
| 1542 constantPoolHandle cp(thread, k->constants()); | |
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1543 int length = iter.length(); |
| 0 | 1544 |
| 1545 // Allocate temp. result array | |
| 1142 | 1546 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
| 0 | 1547 objArrayHandle result (THREAD, r); |
| 1548 int members = 0; | |
| 1549 | |
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1550 for (; !iter.done(); iter.next()) { |
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1551 int ioff = iter.inner_class_info_index(); |
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1552 int ooff = iter.outer_class_info_index(); |
| 0 | 1553 |
| 1554 if (ioff != 0 && ooff != 0) { | |
| 1555 // Check to see if the name matches the class we're looking for | |
| 1556 // before attempting to find the class. | |
| 1557 if (cp->klass_name_at_matches(k, ooff)) { | |
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1558 Klass* outer_klass = cp->klass_at(ooff, CHECK_NULL); |
| 0 | 1559 if (outer_klass == k()) { |
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1560 Klass* ik = cp->klass_at(ioff, CHECK_NULL); |
| 0 | 1561 instanceKlassHandle inner_klass (THREAD, ik); |
| 1562 | |
| 1563 // Throws an exception if outer klass has not declared k as | |
| 1564 // an inner klass | |
|
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1565 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
| 0 | 1566 |
| 1567 result->obj_at_put(members, inner_klass->java_mirror()); | |
| 1568 members++; | |
| 1569 } | |
| 1570 } | |
| 1571 } | |
| 1572 } | |
| 1573 | |
| 1574 if (members != length) { | |
| 1575 // Return array of right length | |
| 1142 | 1576 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
| 0 | 1577 for(int i = 0; i < members; i++) { |
| 1578 res->obj_at_put(i, result->obj_at(i)); | |
| 1579 } | |
| 1580 return (jobjectArray)JNIHandles::make_local(env, res); | |
| 1581 } | |
| 1582 | |
| 1583 return (jobjectArray)JNIHandles::make_local(env, result()); | |
| 1584 JVM_END | |
| 1585 | |
| 1586 | |
| 1587 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
|
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1588 { |
| 0 | 1589 // ofClass is a reference to a java_lang_Class object. |
| 1590 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1591 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
| 0 | 1592 return NULL; |
| 1593 } | |
| 1594 | |
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1595 bool inner_is_member = false; |
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1596 Klass* outer_klass |
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1597 = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)) |
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1598 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
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1599 if (outer_klass == NULL) return NULL; // already a top-level class |
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1600 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
| 6983 | 1601 return (jclass) JNIHandles::make_local(env, outer_klass->java_mirror()); |
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1602 } |
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1603 JVM_END |
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1604 |
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1605 // should be in InstanceKlass.cpp, but is here for historical reasons |
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1606 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
|
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1607 bool* inner_is_member, |
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1608 TRAPS) { |
|
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1609 Thread* thread = THREAD; |
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1610 InnerClassesIterator iter(k); |
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1611 if (iter.length() == 0) { |
| 0 | 1612 // No inner class info => no declaring class |
| 1613 return NULL; | |
| 1614 } | |
| 1615 | |
| 1616 constantPoolHandle i_cp(thread, k->constants()); | |
| 1617 | |
| 1618 bool found = false; | |
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1619 Klass* ok; |
| 0 | 1620 instanceKlassHandle outer_klass; |
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1621 *inner_is_member = false; |
| 0 | 1622 |
| 1623 // Find inner_klass attribute | |
|
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1624 for (; !iter.done() && !found; iter.next()) { |
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1625 int ioff = iter.inner_class_info_index(); |
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1626 int ooff = iter.outer_class_info_index(); |
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1627 int noff = iter.inner_name_index(); |
|
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1628 if (ioff != 0) { |
| 0 | 1629 // Check to see if the name matches the class we're looking for |
| 1630 // before attempting to find the class. | |
| 1631 if (i_cp->klass_name_at_matches(k, ioff)) { | |
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1632 Klass* inner_klass = i_cp->klass_at(ioff, CHECK_NULL); |
|
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1633 found = (k() == inner_klass); |
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1634 if (found && ooff != 0) { |
| 0 | 1635 ok = i_cp->klass_at(ooff, CHECK_NULL); |
| 1636 outer_klass = instanceKlassHandle(thread, ok); | |
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1637 *inner_is_member = true; |
| 0 | 1638 } |
| 1639 } | |
| 1640 } | |
| 1641 } | |
| 1642 | |
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1643 if (found && outer_klass.is_null()) { |
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1644 // It may be anonymous; try for that. |
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1645 int encl_method_class_idx = k->enclosing_method_class_index(); |
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1646 if (encl_method_class_idx != 0) { |
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1647 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
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1648 outer_klass = instanceKlassHandle(thread, ok); |
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1649 *inner_is_member = false; |
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1650 } |
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1651 } |
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1652 |
| 0 | 1653 // If no inner class attribute found for this class. |
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1654 if (outer_klass.is_null()) return NULL; |
| 0 | 1655 |
| 1656 // Throws an exception if outer klass has not declared k as an inner klass | |
|
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1657 // We need evidence that each klass knows about the other, or else |
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1658 // the system could allow a spoof of an inner class to gain access rights. |
|
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1659 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
|
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1660 return outer_klass(); |
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1661 } |
| 0 | 1662 |
| 1663 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
| 1664 assert (cls != NULL, "illegal class"); | |
| 1665 JVMWrapper("JVM_GetClassSignature"); | |
| 1666 JvmtiVMObjectAllocEventCollector oam; | |
| 1667 ResourceMark rm(THREAD); | |
| 1668 // Return null for arrays and primatives | |
| 1669 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
|
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1670 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 6983 | 1671 if (k->oop_is_instance()) { |
|
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1672 Symbol* sym = InstanceKlass::cast(k)->generic_signature(); |
|
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1673 if (sym == NULL) return NULL; |
| 0 | 1674 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 1675 return (jstring) JNIHandles::make_local(env, str()); | |
| 1676 } | |
| 1677 } | |
| 1678 return NULL; | |
| 1679 JVM_END | |
| 1680 | |
| 1681 | |
| 1682 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
| 1683 assert (cls != NULL, "illegal class"); | |
| 1684 JVMWrapper("JVM_GetClassAnnotations"); | |
|
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1685 |
| 0 | 1686 // Return null for arrays and primitives |
| 1687 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
|
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1688 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 6983 | 1689 if (k->oop_is_instance()) { |
|
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1690 typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->class_annotations(), CHECK_NULL); |
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1691 return (jbyteArray) JNIHandles::make_local(env, a); |
| 0 | 1692 } |
| 1693 } | |
| 1694 return NULL; | |
| 1695 JVM_END | |
| 1696 | |
| 1697 | |
|
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1698 static bool jvm_get_field_common(jobject field, fieldDescriptor& fd, TRAPS) { |
| 0 | 1699 // some of this code was adapted from from jni_FromReflectedField |
| 1700 | |
| 1701 oop reflected = JNIHandles::resolve_non_null(field); | |
| 1702 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
|
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1703 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 1704 int slot = java_lang_reflect_Field::slot(reflected); |
| 1705 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
| 1706 | |
| 1707 KlassHandle kh(THREAD, k); | |
|
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1708 intptr_t offset = InstanceKlass::cast(kh())->field_offset(slot); |
| 0 | 1709 |
| 1710 if (modifiers & JVM_ACC_STATIC) { | |
| 1711 // for static fields we only look in the current class | |
|
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1712 if (!InstanceKlass::cast(kh())->find_local_field_from_offset(offset, true, &fd)) { |
| 0 | 1713 assert(false, "cannot find static field"); |
|
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1714 return false; |
| 0 | 1715 } |
| 1716 } else { | |
| 1717 // for instance fields we start with the current class and work | |
| 1718 // our way up through the superclass chain | |
|
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1719 if (!InstanceKlass::cast(kh())->find_field_from_offset(offset, false, &fd)) { |
| 0 | 1720 assert(false, "cannot find instance field"); |
|
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1721 return false; |
| 0 | 1722 } |
| 1723 } | |
|
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1724 return true; |
|
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1725 } |
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1726 |
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1727 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) |
|
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1728 // field is a handle to a java.lang.reflect.Field object |
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1729 assert(field != NULL, "illegal field"); |
|
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1730 JVMWrapper("JVM_GetFieldAnnotations"); |
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1731 |
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1732 fieldDescriptor fd; |
|
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1733 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
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1734 if (!gotFd) { |
|
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1735 return NULL; |
|
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1736 } |
| 0 | 1737 |
|
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1738 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.annotations(), THREAD)); |
| 0 | 1739 JVM_END |
| 1740 | |
| 1741 | |
|
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1742 static Method* jvm_get_method_common(jobject method) { |
| 0 | 1743 // some of this code was adapted from from jni_FromReflectedMethod |
| 1744 | |
| 1745 oop reflected = JNIHandles::resolve_non_null(method); | |
| 1746 oop mirror = NULL; | |
| 1747 int slot = 0; | |
| 1748 | |
| 1142 | 1749 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
| 0 | 1750 mirror = java_lang_reflect_Constructor::clazz(reflected); |
| 1751 slot = java_lang_reflect_Constructor::slot(reflected); | |
| 1752 } else { | |
| 1142 | 1753 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
| 0 | 1754 "wrong type"); |
| 1755 mirror = java_lang_reflect_Method::clazz(reflected); | |
| 1756 slot = java_lang_reflect_Method::slot(reflected); | |
| 1757 } | |
|
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1758 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 1759 |
|
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1760 Method* m = InstanceKlass::cast(k)->method_with_idnum(slot); |
|
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1761 assert(m != NULL, "cannot find method"); |
|
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1762 return m; // caller has to deal with NULL in product mode |
| 0 | 1763 } |
| 1764 | |
| 1765 | |
| 1766 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
| 1767 JVMWrapper("JVM_GetMethodAnnotations"); | |
| 1768 | |
| 1769 // method is a handle to a java.lang.reflect.Method object | |
|
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1770 Method* m = jvm_get_method_common(method); |
|
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1771 if (m == NULL) { |
|
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1772 return NULL; |
|
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|
1773 } |
|
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1774 |
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1775 return (jbyteArray) JNIHandles::make_local(env, |
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1776 Annotations::make_java_array(m->annotations(), THREAD)); |
| 0 | 1777 JVM_END |
| 1778 | |
| 1779 | |
| 1780 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
| 1781 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
| 1782 | |
| 1783 // method is a handle to a java.lang.reflect.Method object | |
|
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1784 Method* m = jvm_get_method_common(method); |
|
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1785 if (m == NULL) { |
|
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1786 return NULL; |
|
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|
1787 } |
|
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1788 |
|
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1789 return (jbyteArray) JNIHandles::make_local(env, |
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1790 Annotations::make_java_array(m->annotation_default(), THREAD)); |
| 0 | 1791 JVM_END |
| 1792 | |
| 1793 | |
| 1794 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
| 1795 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
| 1796 | |
| 1797 // method is a handle to a java.lang.reflect.Method object | |
|
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1798 Method* m = jvm_get_method_common(method); |
|
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1799 if (m == NULL) { |
|
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1800 return NULL; |
|
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|
1801 } |
|
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1802 |
|
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1803 return (jbyteArray) JNIHandles::make_local(env, |
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1804 Annotations::make_java_array(m->parameter_annotations(), THREAD)); |
| 0 | 1805 JVM_END |
| 1806 | |
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1807 /* Type use annotations support (JDK 1.8) */ |
|
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1808 |
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1809 JVM_ENTRY(jbyteArray, JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls)) |
|
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1810 assert (cls != NULL, "illegal class"); |
|
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1811 JVMWrapper("JVM_GetClassTypeAnnotations"); |
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1812 ResourceMark rm(THREAD); |
|
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1813 // Return null for arrays and primitives |
|
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1814 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
|
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1815 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
|
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1816 if (k->oop_is_instance()) { |
| 8031 | 1817 AnnotationArray* type_annotations = InstanceKlass::cast(k)->class_type_annotations(); |
|
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1818 if (type_annotations != NULL) { |
| 8031 | 1819 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
|
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1820 return (jbyteArray) JNIHandles::make_local(env, a); |
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1821 } |
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1822 } |
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1823 } |
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1824 return NULL; |
|
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1825 JVM_END |
|
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1826 |
|
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1827 JVM_ENTRY(jbyteArray, JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method)) |
|
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1828 assert (method != NULL, "illegal method"); |
|
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|
1829 JVMWrapper("JVM_GetMethodTypeAnnotations"); |
|
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1830 |
|
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1831 // method is a handle to a java.lang.reflect.Method object |
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1832 Method* m = jvm_get_method_common(method); |
|
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|
1833 if (m == NULL) { |
|
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1834 return NULL; |
|
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|
1835 } |
|
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|
1836 |
|
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|
1837 AnnotationArray* type_annotations = m->type_annotations(); |
|
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|
1838 if (type_annotations != NULL) { |
|
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|
1839 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
|
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1840 return (jbyteArray) JNIHandles::make_local(env, a); |
|
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|
1841 } |
|
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|
1842 |
|
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1843 return NULL; |
|
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|
1844 JVM_END |
|
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|
1845 |
|
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1846 JVM_ENTRY(jbyteArray, JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field)) |
|
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1847 assert (field != NULL, "illegal field"); |
|
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|
1848 JVMWrapper("JVM_GetFieldTypeAnnotations"); |
|
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|
1849 |
|
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1850 fieldDescriptor fd; |
|
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1851 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
|
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1852 if (!gotFd) { |
|
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1853 return NULL; |
|
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|
1854 } |
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1855 |
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1856 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.type_annotations(), THREAD)); |
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1857 JVM_END |
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1858 |
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1859 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { |
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1860 if (!cp->is_within_bounds(index)) { |
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1861 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); |
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1862 } |
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1863 } |
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1864 |
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1865 JVM_ENTRY(jobjectArray, JVM_GetMethodParameters(JNIEnv *env, jobject method)) |
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1866 { |
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1867 JVMWrapper("JVM_GetMethodParameters"); |
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1868 // method is a handle to a java.lang.reflect.Method object |
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1869 Method* method_ptr = jvm_get_method_common(method); |
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1870 methodHandle mh (THREAD, method_ptr); |
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1871 Handle reflected_method (THREAD, JNIHandles::resolve_non_null(method)); |
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1872 const int num_params = mh->method_parameters_length(); |
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1873 |
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1874 if (0 != num_params) { |
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1875 // make sure all the symbols are properly formatted |
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1876 for (int i = 0; i < num_params; i++) { |
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1877 MethodParametersElement* params = mh->method_parameters_start(); |
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1878 int index = params[i].name_cp_index; |
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1879 bounds_check(mh->constants(), index, CHECK_NULL); |
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1880 |
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1881 if (0 != index && !mh->constants()->tag_at(index).is_utf8()) { |
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1882 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), |
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1883 "Wrong type at constant pool index"); |
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1884 } |
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1885 |
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1886 } |
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1887 |
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1888 objArrayOop result_oop = oopFactory::new_objArray(SystemDictionary::reflect_Parameter_klass(), num_params, CHECK_NULL); |
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1889 objArrayHandle result (THREAD, result_oop); |
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1890 |
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1891 for (int i = 0; i < num_params; i++) { |
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1892 MethodParametersElement* params = mh->method_parameters_start(); |
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1893 // For a 0 index, give a NULL symbol |
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1894 Symbol* sym = 0 != params[i].name_cp_index ? |
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1895 mh->constants()->symbol_at(params[i].name_cp_index) : NULL; |
|
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1896 int flags = params[i].flags; |
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1897 oop param = Reflection::new_parameter(reflected_method, i, sym, |
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1898 flags, CHECK_NULL); |
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1899 result->obj_at_put(i, param); |
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1900 } |
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1901 return (jobjectArray)JNIHandles::make_local(env, result()); |
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1902 } else { |
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1903 return (jobjectArray)NULL; |
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1904 } |
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1905 } |
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1906 JVM_END |
| 0 | 1907 |
| 1908 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
| 1909 | |
| 1910 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1911 { | |
| 1912 JVMWrapper("JVM_GetClassDeclaredFields"); | |
| 1913 JvmtiVMObjectAllocEventCollector oam; | |
| 1914 | |
| 1915 // Exclude primitive types and array types | |
| 1916 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1917 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
| 0 | 1918 // Return empty array |
| 1142 | 1919 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
| 0 | 1920 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1921 } | |
| 1922 | |
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1923 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
| 0 | 1924 constantPoolHandle cp(THREAD, k->constants()); |
| 1925 | |
| 1926 // Ensure class is linked | |
| 1927 k->link_class(CHECK_NULL); | |
| 1928 | |
| 1929 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
| 1930 bool skip_backtrace = false; | |
| 1931 | |
| 1932 // Allocate result | |
| 1933 int num_fields; | |
| 1934 | |
| 1935 if (publicOnly) { | |
| 1936 num_fields = 0; | |
| 3938 | 1937 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
| 1938 if (fs.access_flags().is_public()) ++num_fields; | |
| 0 | 1939 } |
| 1940 } else { | |
| 3938 | 1941 num_fields = k->java_fields_count(); |
| 0 | 1942 |
| 1142 | 1943 if (k() == SystemDictionary::Throwable_klass()) { |
| 0 | 1944 num_fields--; |
| 1945 skip_backtrace = true; | |
| 1946 } | |
| 1947 } | |
| 1948 | |
| 1142 | 1949 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
| 0 | 1950 objArrayHandle result (THREAD, r); |
| 1951 | |
| 1952 int out_idx = 0; | |
| 1953 fieldDescriptor fd; | |
| 3938 | 1954 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
| 0 | 1955 if (skip_backtrace) { |
| 1956 // 4496456 skip java.lang.Throwable.backtrace | |
| 3938 | 1957 int offset = fs.offset(); |
| 0 | 1958 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
| 1959 } | |
| 1960 | |
| 3938 | 1961 if (!publicOnly || fs.access_flags().is_public()) { |
|
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1962 fd.reinitialize(k(), fs.index()); |
| 0 | 1963 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
| 1964 result->obj_at_put(out_idx, field); | |
| 1965 ++out_idx; | |
| 1966 } | |
| 1967 } | |
| 1968 assert(out_idx == num_fields, "just checking"); | |
| 1969 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1970 } | |
| 1971 JVM_END | |
| 1972 | |
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1973 static bool select_method(methodHandle method, bool want_constructor) { |
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1974 if (want_constructor) { |
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1975 return (method->is_initializer() && !method->is_static()); |
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1976 } else { |
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1977 return (!method->is_initializer() && !method->is_overpass()); |
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1978 } |
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1979 } |
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1980 |
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1981 static jobjectArray get_class_declared_methods_helper( |
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1982 JNIEnv *env, |
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1983 jclass ofClass, jboolean publicOnly, |
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1984 bool want_constructor, |
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1985 Klass* klass, TRAPS) { |
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1986 |
| 0 | 1987 JvmtiVMObjectAllocEventCollector oam; |
| 1988 | |
| 1989 // Exclude primitive types and array types | |
| 1990 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
| 6983 | 1991 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
| 0 | 1992 // Return empty array |
|
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1993 oop res = oopFactory::new_objArray(klass, 0, CHECK_NULL); |
| 0 | 1994 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1995 } | |
| 1996 | |
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1997 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
| 0 | 1998 |
| 1999 // Ensure class is linked | |
| 2000 k->link_class(CHECK_NULL); | |
| 2001 | |
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2002 Array<Method*>* methods = k->methods(); |
| 0 | 2003 int methods_length = methods->length(); |
|
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2004 |
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2005 // Save original method_idnum in case of redefinition, which can change |
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2006 // the idnum of obsolete methods. The new method will have the same idnum |
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2007 // but if we refresh the methods array, the counts will be wrong. |
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2008 ResourceMark rm(THREAD); |
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2009 GrowableArray<int>* idnums = new GrowableArray<int>(methods_length); |
| 0 | 2010 int num_methods = 0; |
| 2011 | |
|
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2012 for (int i = 0; i < methods_length; i++) { |
|
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2013 methodHandle method(THREAD, methods->at(i)); |
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2014 if (select_method(method, want_constructor)) { |
| 0 | 2015 if (!publicOnly || method->is_public()) { |
|
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2016 idnums->push(method->method_idnum()); |
| 0 | 2017 ++num_methods; |
| 2018 } | |
| 2019 } | |
| 2020 } | |
| 2021 | |
| 2022 // Allocate result | |
|
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2023 objArrayOop r = oopFactory::new_objArray(klass, num_methods, CHECK_NULL); |
| 0 | 2024 objArrayHandle result (THREAD, r); |
| 2025 | |
|
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2026 // Now just put the methods that we selected above, but go by their idnum |
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2027 // in case of redefinition. The methods can be redefined at any safepoint, |
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2028 // so above when allocating the oop array and below when creating reflect |
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2029 // objects. |
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2030 for (int i = 0; i < num_methods; i++) { |
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2031 methodHandle method(THREAD, k->method_with_idnum(idnums->at(i))); |
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2032 if (method.is_null()) { |
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2033 // Method may have been deleted and seems this API can handle null |
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2034 // Otherwise should probably put a method that throws NSME |
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2035 result->obj_at_put(i, NULL); |
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2036 } else { |
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2037 oop m; |
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2038 if (want_constructor) { |
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2039 m = Reflection::new_constructor(method, CHECK_NULL); |
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2040 } else { |
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2041 m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); |
| 0 | 2042 } |
|
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2043 result->obj_at_put(i, m); |
| 0 | 2044 } |
| 2045 } | |
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2046 |
| 0 | 2047 return (jobjectArray) JNIHandles::make_local(env, result()); |
| 2048 } | |
|
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2049 |
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2050 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) |
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2051 { |
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2052 JVMWrapper("JVM_GetClassDeclaredMethods"); |
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2053 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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2054 /*want_constructor*/ false, |
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2055 SystemDictionary::reflect_Method_klass(), THREAD); |
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2056 } |
| 0 | 2057 JVM_END |
| 2058 | |
| 2059 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 2060 { | |
| 2061 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
|
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2062 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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2063 /*want_constructor*/ true, |
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2064 SystemDictionary::reflect_Constructor_klass(), THREAD); |
| 0 | 2065 } |
| 2066 JVM_END | |
| 2067 | |
| 2068 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
| 2069 { | |
| 2070 JVMWrapper("JVM_GetClassAccessFlags"); | |
| 2071 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 2072 // Primitive type | |
| 2073 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 2074 } | |
| 2075 | |
| 6983 | 2076 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2077 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; |
| 2078 } | |
| 2079 JVM_END | |
| 2080 | |
| 2081 | |
| 2082 // Constant pool access ////////////////////////////////////////////////////////// | |
| 2083 | |
| 2084 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
| 2085 { | |
| 2086 JVMWrapper("JVM_GetClassConstantPool"); | |
| 2087 JvmtiVMObjectAllocEventCollector oam; | |
| 2088 | |
| 2089 // Return null for primitives and arrays | |
| 2090 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
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2091 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 2092 if (k->oop_is_instance()) { |
| 0 | 2093 instanceKlassHandle k_h(THREAD, k); |
| 2094 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
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2095 sun_reflect_ConstantPool::set_cp(jcp(), k_h->constants()); |
| 0 | 2096 return JNIHandles::make_local(jcp()); |
| 2097 } | |
| 2098 } | |
| 2099 return NULL; | |
| 2100 } | |
| 2101 JVM_END | |
| 2102 | |
| 2103 | |
|
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2104 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject obj, jobject unused)) |
| 0 | 2105 { |
| 2106 JVMWrapper("JVM_ConstantPoolGetSize"); | |
|
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2107 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2108 return cp->length(); |
| 2109 } | |
| 2110 JVM_END | |
| 2111 | |
| 2112 | |
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2113 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2114 { |
| 2115 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
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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 constantTag tag = cp->tag_at(index); | |
| 2119 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 2120 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2121 } | |
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2122 Klass* k = cp->klass_at(index, CHECK_NULL); |
|
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2123 return (jclass) JNIHandles::make_local(k->java_mirror()); |
| 0 | 2124 } |
| 2125 JVM_END | |
| 2126 | |
|
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2127 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2128 { |
| 2129 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
|
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2130 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2131 bounds_check(cp, index, CHECK_NULL); |
| 2132 constantTag tag = cp->tag_at(index); | |
| 2133 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 2134 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2135 } | |
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2136 Klass* k = ConstantPool::klass_at_if_loaded(cp, index); |
| 0 | 2137 if (k == NULL) return NULL; |
|
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2138 return (jclass) JNIHandles::make_local(k->java_mirror()); |
| 0 | 2139 } |
| 2140 JVM_END | |
| 2141 | |
| 2142 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 2143 constantTag tag = cp->tag_at(index); | |
| 2144 if (!tag.is_method() && !tag.is_interface_method()) { | |
| 2145 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2146 } | |
| 2147 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2148 Klass* k_o; |
| 0 | 2149 if (force_resolution) { |
| 2150 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 2151 } else { | |
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2152 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
| 0 | 2153 if (k_o == NULL) return NULL; |
| 2154 } | |
| 2155 instanceKlassHandle k(THREAD, k_o); | |
|
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2156 Symbol* name = cp->uncached_name_ref_at(index); |
|
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2157 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 2158 methodHandle m (THREAD, k->find_method(name, sig)); |
| 2159 if (m.is_null()) { | |
| 2160 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
| 2161 } | |
| 2162 oop method; | |
| 2163 if (!m->is_initializer() || m->is_static()) { | |
| 2164 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
| 2165 } else { | |
| 2166 method = Reflection::new_constructor(m, CHECK_NULL); | |
| 2167 } | |
| 2168 return JNIHandles::make_local(method); | |
| 2169 } | |
| 2170 | |
|
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2171 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2172 { |
| 2173 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
| 2174 JvmtiVMObjectAllocEventCollector oam; | |
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2175 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2176 bounds_check(cp, index, CHECK_NULL); |
| 2177 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
| 2178 return res; | |
| 2179 } | |
| 2180 JVM_END | |
| 2181 | |
|
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2182 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2183 { |
| 2184 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
| 2185 JvmtiVMObjectAllocEventCollector oam; | |
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2186 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2187 bounds_check(cp, index, CHECK_NULL); |
| 2188 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
| 2189 return res; | |
| 2190 } | |
| 2191 JVM_END | |
| 2192 | |
| 2193 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 2194 constantTag tag = cp->tag_at(index); | |
| 2195 if (!tag.is_field()) { | |
| 2196 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2197 } | |
| 2198 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
|
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2199 Klass* k_o; |
| 0 | 2200 if (force_resolution) { |
| 2201 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 2202 } else { | |
|
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2203 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
| 0 | 2204 if (k_o == NULL) return NULL; |
| 2205 } | |
| 2206 instanceKlassHandle k(THREAD, k_o); | |
|
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2207 Symbol* name = cp->uncached_name_ref_at(index); |
|
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2208 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 2209 fieldDescriptor fd; |
|
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2210 Klass* target_klass = k->find_field(name, sig, &fd); |
| 0 | 2211 if (target_klass == NULL) { |
| 2212 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
| 2213 } | |
| 2214 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
| 2215 return JNIHandles::make_local(field); | |
| 2216 } | |
| 2217 | |
|
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2218 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject obj, jobject unusedl, jint index)) |
| 0 | 2219 { |
| 2220 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
| 2221 JvmtiVMObjectAllocEventCollector oam; | |
|
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2222 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2223 bounds_check(cp, index, CHECK_NULL); |
| 2224 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
| 2225 return res; | |
| 2226 } | |
| 2227 JVM_END | |
| 2228 | |
|
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2229 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2230 { |
| 2231 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
| 2232 JvmtiVMObjectAllocEventCollector oam; | |
|
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2233 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2234 bounds_check(cp, index, CHECK_NULL); |
| 2235 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
| 2236 return res; | |
| 2237 } | |
| 2238 JVM_END | |
| 2239 | |
|
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2240 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2241 { |
| 2242 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
| 2243 JvmtiVMObjectAllocEventCollector oam; | |
|
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2244 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2245 bounds_check(cp, index, CHECK_NULL); |
| 2246 constantTag tag = cp->tag_at(index); | |
| 2247 if (!tag.is_field_or_method()) { | |
| 2248 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2249 } | |
| 2250 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
|
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2251 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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2252 Symbol* member_name = cp->uncached_name_ref_at(index); |
|
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2253 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
| 1142 | 2254 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
| 0 | 2255 objArrayHandle dest(THREAD, dest_o); |
| 2256 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
| 2257 dest->obj_at_put(0, str()); | |
| 2258 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
| 2259 dest->obj_at_put(1, str()); | |
| 2260 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
| 2261 dest->obj_at_put(2, str()); | |
| 2262 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 2263 } | |
| 2264 JVM_END | |
| 2265 | |
|
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2266 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2267 { |
| 2268 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
|
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2269 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2270 bounds_check(cp, index, CHECK_0); |
| 2271 constantTag tag = cp->tag_at(index); | |
| 2272 if (!tag.is_int()) { | |
| 2273 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2274 } | |
| 2275 return cp->int_at(index); | |
| 2276 } | |
| 2277 JVM_END | |
| 2278 | |
|
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2279 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2280 { |
| 2281 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
|
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2282 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2283 bounds_check(cp, index, CHECK_(0L)); |
| 2284 constantTag tag = cp->tag_at(index); | |
| 2285 if (!tag.is_long()) { | |
| 2286 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2287 } | |
| 2288 return cp->long_at(index); | |
| 2289 } | |
| 2290 JVM_END | |
| 2291 | |
|
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2292 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2293 { |
| 2294 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
|
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2295 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2296 bounds_check(cp, index, CHECK_(0.0f)); |
| 2297 constantTag tag = cp->tag_at(index); | |
| 2298 if (!tag.is_float()) { | |
| 2299 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2300 } | |
| 2301 return cp->float_at(index); | |
| 2302 } | |
| 2303 JVM_END | |
| 2304 | |
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2305 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2306 { |
| 2307 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
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2308 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2309 bounds_check(cp, index, CHECK_(0.0)); |
| 2310 constantTag tag = cp->tag_at(index); | |
| 2311 if (!tag.is_double()) { | |
| 2312 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2313 } | |
| 2314 return cp->double_at(index); | |
| 2315 } | |
| 2316 JVM_END | |
| 2317 | |
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2318 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2319 { |
| 2320 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
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2321 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2322 bounds_check(cp, index, CHECK_NULL); |
| 2323 constantTag tag = cp->tag_at(index); | |
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2324 if (!tag.is_string()) { |
| 0 | 2325 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
| 2326 } | |
| 2327 oop str = cp->string_at(index, CHECK_NULL); | |
| 2328 return (jstring) JNIHandles::make_local(str); | |
| 2329 } | |
| 2330 JVM_END | |
| 2331 | |
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2332 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2333 { |
| 2334 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
| 2335 JvmtiVMObjectAllocEventCollector oam; | |
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2336 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2337 bounds_check(cp, index, CHECK_NULL); |
| 2338 constantTag tag = cp->tag_at(index); | |
| 2339 if (!tag.is_symbol()) { | |
| 2340 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2341 } | |
|
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2342 Symbol* sym = cp->symbol_at(index); |
| 0 | 2343 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 2344 return (jstring) JNIHandles::make_local(str()); | |
| 2345 } | |
| 2346 JVM_END | |
| 2347 | |
| 2348 | |
| 2349 // Assertion support. ////////////////////////////////////////////////////////// | |
| 2350 | |
| 2351 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
| 2352 JVMWrapper("JVM_DesiredAssertionStatus"); | |
| 2353 assert(cls != NULL, "bad class"); | |
| 2354 | |
| 2355 oop r = JNIHandles::resolve(cls); | |
| 2356 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
| 2357 if (java_lang_Class::is_primitive(r)) return false; | |
| 2358 | |
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2359 Klass* k = java_lang_Class::as_Klass(r); |
| 6983 | 2360 assert(k->oop_is_instance(), "must be an instance klass"); |
| 2361 if (! k->oop_is_instance()) return false; | |
| 0 | 2362 |
| 2363 ResourceMark rm(THREAD); | |
| 6983 | 2364 const char* name = k->name()->as_C_string(); |
|
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2365 bool system_class = k->class_loader() == NULL GRAAL_ONLY(|| SystemDictionary::graal_loader() == k->class_loader()); |
| 0 | 2366 return JavaAssertions::enabled(name, system_class); |
| 2367 | |
| 2368 JVM_END | |
| 2369 | |
| 2370 | |
| 2371 // Return a new AssertionStatusDirectives object with the fields filled in with | |
| 2372 // command-line assertion arguments (i.e., -ea, -da). | |
| 2373 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
| 2374 JVMWrapper("JVM_AssertionStatusDirectives"); | |
| 2375 JvmtiVMObjectAllocEventCollector oam; | |
| 2376 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
| 2377 return JNIHandles::make_local(env, asd); | |
| 2378 JVM_END | |
| 2379 | |
| 2380 // Verification //////////////////////////////////////////////////////////////////////////////// | |
| 2381 | |
| 2382 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
| 2383 | |
| 2384 // RedefineClasses support: bug 6214132 caused verification to fail. | |
| 2385 // All functions from this section should call the jvmtiThreadSate function: | |
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2386 // Klass* class_to_verify_considering_redefinition(Klass* klass). |
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2387 // The function returns a Klass* of the _scratch_class if the verifier |
| 0 | 2388 // was invoked in the middle of the class redefinition. |
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2389 // Otherwise it returns its argument value which is the _the_class Klass*. |
| 0 | 2390 // Please, refer to the description in the jvmtiThreadSate.hpp. |
| 2391 | |
| 2392 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
| 2393 JVMWrapper("JVM_GetClassNameUTF"); | |
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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); |
| 6983 | 2396 return k->name()->as_utf8(); |
| 0 | 2397 JVM_END |
| 2398 | |
| 2399 | |
| 2400 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
| 2401 JVMWrapper("JVM_GetClassCPTypes"); | |
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2402 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2403 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2404 // types will have length zero if this is not an InstanceKlass |
| 0 | 2405 // (length is determined by call to JVM_GetClassCPEntriesCount) |
| 6983 | 2406 if (k->oop_is_instance()) { |
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2407 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2408 for (int index = cp->length() - 1; index >= 0; index--) { |
| 2409 constantTag tag = cp->tag_at(index); | |
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2410 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : tag.value(); |
| 0 | 2411 } |
| 2412 } | |
| 2413 JVM_END | |
| 2414 | |
| 2415 | |
| 2416 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
| 2417 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
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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); |
| 6983 | 2420 if (!k->oop_is_instance()) |
| 0 | 2421 return 0; |
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2422 return InstanceKlass::cast(k)->constants()->length(); |
| 0 | 2423 JVM_END |
| 2424 | |
| 2425 | |
| 2426 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
| 2427 JVMWrapper("JVM_GetClassFieldsCount"); | |
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2428 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2429 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2430 if (!k->oop_is_instance()) |
| 0 | 2431 return 0; |
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2432 return InstanceKlass::cast(k)->java_fields_count(); |
| 0 | 2433 JVM_END |
| 2434 | |
| 2435 | |
| 2436 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
| 2437 JVMWrapper("JVM_GetClassMethodsCount"); | |
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2438 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2439 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2440 if (!k->oop_is_instance()) |
| 0 | 2441 return 0; |
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2442 return InstanceKlass::cast(k)->methods()->length(); |
| 0 | 2443 JVM_END |
| 2444 | |
| 2445 | |
| 2446 // The following methods, used for the verifier, are never called with | |
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2447 // array klasses, so a direct cast to InstanceKlass is safe. |
| 0 | 2448 // Typically, these methods are called in a loop with bounds determined |
| 2449 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
| 2450 // zero for arrays. | |
| 2451 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
| 2452 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
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2453 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2454 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2455 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2456 int length = method->checked_exceptions_length(); |
| 0 | 2457 if (length > 0) { |
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2458 CheckedExceptionElement* table= method->checked_exceptions_start(); |
| 0 | 2459 for (int i = 0; i < length; i++) { |
| 2460 exceptions[i] = table[i].class_cp_index; | |
| 2461 } | |
| 2462 } | |
| 2463 JVM_END | |
| 2464 | |
| 2465 | |
| 2466 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
| 2467 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
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2468 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2469 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2470 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2471 return method->checked_exceptions_length(); |
| 0 | 2472 JVM_END |
| 2473 | |
| 2474 | |
| 2475 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
| 2476 JVMWrapper("JVM_GetMethodIxByteCode"); | |
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2477 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2478 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2479 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2480 memcpy(code, method->code_base(), method->code_size()); |
| 0 | 2481 JVM_END |
| 2482 | |
| 2483 | |
| 2484 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
| 2485 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
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2486 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2487 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2488 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2489 return method->code_size(); |
| 0 | 2490 JVM_END |
| 2491 | |
| 2492 | |
| 2493 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
| 2494 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
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2495 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2496 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2497 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2498 ExceptionTable extable(method); |
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2499 entry->start_pc = extable.start_pc(entry_index); |
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2500 entry->end_pc = extable.end_pc(entry_index); |
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2501 entry->handler_pc = extable.handler_pc(entry_index); |
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2502 entry->catchType = extable.catch_type_index(entry_index); |
| 0 | 2503 JVM_END |
| 2504 | |
| 2505 | |
| 2506 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
| 2507 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
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2508 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2509 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2510 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2511 return method->exception_table_length(); |
| 0 | 2512 JVM_END |
| 2513 | |
| 2514 | |
| 2515 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
| 2516 JVMWrapper("JVM_GetMethodIxModifiers"); | |
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2517 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2518 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2519 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2520 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
| 0 | 2521 JVM_END |
| 2522 | |
| 2523 | |
| 2524 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
| 2525 JVMWrapper("JVM_GetFieldIxModifiers"); | |
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2526 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2527 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2528 return InstanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
| 0 | 2529 JVM_END |
| 2530 | |
| 2531 | |
| 2532 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
| 2533 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
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2534 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2535 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2536 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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2537 return method->max_locals(); |
| 0 | 2538 JVM_END |
| 2539 | |
| 2540 | |
| 2541 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
| 2542 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
|
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2543 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2544 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2545 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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2546 return method->size_of_parameters(); |
| 0 | 2547 JVM_END |
| 2548 | |
| 2549 | |
| 2550 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
| 2551 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
|
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2552 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2553 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2554 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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2555 return method->verifier_max_stack(); |
| 0 | 2556 JVM_END |
| 2557 | |
| 2558 | |
| 2559 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
| 2560 JVMWrapper("JVM_IsConstructorIx"); | |
| 2561 ResourceMark rm(THREAD); | |
|
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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 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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2565 return method->name() == vmSymbols::object_initializer_name(); |
| 0 | 2566 JVM_END |
| 2567 | |
| 2568 | |
|
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|
2569 JVM_QUICK_ENTRY(jboolean, JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cls, int method_index)) |
|
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|
2570 JVMWrapper("JVM_IsVMGeneratedMethodIx"); |
|
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|
2571 ResourceMark rm(THREAD); |
|
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|
2572 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
|
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|
2573 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2574 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2575 return method->is_overpass(); |
|
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|
2576 JVM_END |
|
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|
2577 |
| 0 | 2578 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) |
| 2579 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
|
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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 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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2583 return method->name()->as_utf8(); |
| 0 | 2584 JVM_END |
| 2585 | |
| 2586 | |
| 2587 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
| 2588 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
|
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2589 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2590 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2591 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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2592 return method->signature()->as_utf8(); |
| 0 | 2593 JVM_END |
| 2594 | |
| 2595 /** | |
| 2596 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
| 2597 * read entries in the constant pool. Since the old verifier always | |
| 2598 * works on a copy of the code, it will not see any rewriting that | |
| 2599 * may possibly occur in the middle of verification. So it is important | |
| 2600 * that nothing it calls tries to use the cpCache instead of the raw | |
| 2601 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
| 2602 */ | |
| 2603 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2604 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
|
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2605 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2606 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2607 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2608 switch (cp->tag_at(cp_index).value()) { |
| 2609 case JVM_CONSTANT_Fieldref: | |
| 2610 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
| 2611 default: | |
| 2612 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
| 2613 } | |
| 2614 ShouldNotReachHere(); | |
| 2615 return NULL; | |
| 2616 JVM_END | |
| 2617 | |
| 2618 | |
| 2619 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2620 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
|
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2621 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2622 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2623 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2624 switch (cp->tag_at(cp_index).value()) { |
| 2625 case JVM_CONSTANT_InterfaceMethodref: | |
| 2626 case JVM_CONSTANT_Methodref: | |
|
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|
2627 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2628 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
| 2629 default: | |
| 2630 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
| 2631 } | |
| 2632 ShouldNotReachHere(); | |
| 2633 return NULL; | |
| 2634 JVM_END | |
| 2635 | |
| 2636 | |
| 2637 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2638 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
|
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2639 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2640 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2641 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2642 switch (cp->tag_at(cp_index).value()) { |
| 2643 case JVM_CONSTANT_InterfaceMethodref: | |
| 2644 case JVM_CONSTANT_Methodref: | |
|
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2645 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2646 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
| 2647 default: | |
| 2648 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
| 2649 } | |
| 2650 ShouldNotReachHere(); | |
| 2651 return NULL; | |
| 2652 JVM_END | |
| 2653 | |
| 2654 | |
| 2655 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2656 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
|
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|
2657 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2658 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2659 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2660 switch (cp->tag_at(cp_index).value()) { |
| 2661 case JVM_CONSTANT_Fieldref: | |
| 2662 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
| 2663 default: | |
| 2664 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
| 2665 } | |
| 2666 ShouldNotReachHere(); | |
| 2667 return NULL; | |
| 2668 JVM_END | |
| 2669 | |
| 2670 | |
| 2671 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2672 JVMWrapper("JVM_GetCPClassNameUTF"); | |
|
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|
2673 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2674 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2675 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
|
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|
2676 Symbol* classname = cp->klass_name_at(cp_index); |
| 0 | 2677 return classname->as_utf8(); |
| 2678 JVM_END | |
| 2679 | |
| 2680 | |
| 2681 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2682 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
|
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|
2683 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2684 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2685 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2686 switch (cp->tag_at(cp_index).value()) { |
| 2687 case JVM_CONSTANT_Fieldref: { | |
| 2688 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
|
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|
2689 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2690 return classname->as_utf8(); |
| 2691 } | |
| 2692 default: | |
| 2693 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
| 2694 } | |
| 2695 ShouldNotReachHere(); | |
| 2696 return NULL; | |
| 2697 JVM_END | |
| 2698 | |
| 2699 | |
| 2700 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2701 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
|
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2702 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2703 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2704 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2705 switch (cp->tag_at(cp_index).value()) { |
| 2706 case JVM_CONSTANT_Methodref: | |
| 2707 case JVM_CONSTANT_InterfaceMethodref: { | |
| 2708 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
|
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|
2709 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2710 return classname->as_utf8(); |
| 2711 } | |
| 2712 default: | |
| 2713 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
| 2714 } | |
| 2715 ShouldNotReachHere(); | |
| 2716 return NULL; | |
| 2717 JVM_END | |
| 2718 | |
| 2719 | |
| 3938 | 2720 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
| 0 | 2721 JVMWrapper("JVM_GetCPFieldModifiers"); |
|
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2722 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
|
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2723 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
| 0 | 2724 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 2725 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
|
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2726 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
|
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2727 ConstantPool* cp_called = InstanceKlass::cast(k_called)->constants(); |
| 0 | 2728 switch (cp->tag_at(cp_index).value()) { |
| 2729 case JVM_CONSTANT_Fieldref: { | |
|
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2730 Symbol* name = cp->uncached_name_ref_at(cp_index); |
|
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|
2731 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
| 3938 | 2732 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
| 2733 if (fs.name() == name && fs.signature() == signature) { | |
| 2734 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
| 0 | 2735 } |
| 2736 } | |
| 2737 return -1; | |
| 2738 } | |
| 2739 default: | |
| 2740 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
| 2741 } | |
| 2742 ShouldNotReachHere(); | |
| 2743 return 0; | |
| 2744 JVM_END | |
| 2745 | |
| 2746 | |
| 2747 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
| 2748 JVMWrapper("JVM_GetCPMethodModifiers"); | |
|
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2749 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
|
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2750 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
| 0 | 2751 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 2752 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
|
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|
2753 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2754 switch (cp->tag_at(cp_index).value()) { |
| 2755 case JVM_CONSTANT_Methodref: | |
| 2756 case JVM_CONSTANT_InterfaceMethodref: { | |
|
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2757 Symbol* name = cp->uncached_name_ref_at(cp_index); |
|
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|
2758 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
|
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|
2759 Array<Method*>* methods = InstanceKlass::cast(k_called)->methods(); |
| 0 | 2760 int methods_count = methods->length(); |
| 2761 for (int i = 0; i < methods_count; i++) { | |
|
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|
2762 Method* method = methods->at(i); |
| 0 | 2763 if (method->name() == name && method->signature() == signature) { |
| 2764 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 2765 } | |
| 2766 } | |
| 2767 return -1; | |
| 2768 } | |
| 2769 default: | |
| 2770 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
| 2771 } | |
| 2772 ShouldNotReachHere(); | |
| 2773 return 0; | |
| 2774 JVM_END | |
| 2775 | |
| 2776 | |
| 2777 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
| 2778 | |
| 2779 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
| 2780 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
| 2781 JVM_END | |
| 2782 | |
| 2783 | |
| 2784 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
| 2785 JVMWrapper("JVM_IsSameClassPackage"); | |
| 2786 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
| 2787 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
2788 Klass* klass1 = java_lang_Class::as_Klass(class1_mirror); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
2789 Klass* klass2 = java_lang_Class::as_Klass(class2_mirror); |
| 0 | 2790 return (jboolean) Reflection::is_same_class_package(klass1, klass2); |
| 2791 JVM_END | |
| 2792 | |
| 2793 | |
| 2794 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
| 2795 | |
| 2796 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
| 2797 JVMWrapper2("JVM_Open (%s)", fname); | |
| 2798 | |
| 2799 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2800 int result = os::open(fname, flags, mode); |
| 0 | 2801 if (result >= 0) { |
| 2802 return result; | |
| 2803 } else { | |
| 2804 switch(errno) { | |
| 2805 case EEXIST: | |
| 2806 return JVM_EEXIST; | |
| 2807 default: | |
| 2808 return -1; | |
| 2809 } | |
| 2810 } | |
| 2811 JVM_END | |
| 2812 | |
| 2813 | |
| 2814 JVM_LEAF(jint, JVM_Close(jint fd)) | |
| 2815 JVMWrapper2("JVM_Close (0x%x)", fd); | |
| 2816 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2817 return os::close(fd); |
| 0 | 2818 JVM_END |
| 2819 | |
| 2820 | |
| 2821 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
| 2822 JVMWrapper2("JVM_Read (0x%x)", fd); | |
| 2823 | |
| 2824 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2825 return (jint)os::restartable_read(fd, buf, nbytes); |
| 0 | 2826 JVM_END |
| 2827 | |
| 2828 | |
| 2829 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
| 2830 JVMWrapper2("JVM_Write (0x%x)", fd); | |
| 2831 | |
| 2832 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2833 return (jint)os::write(fd, buf, nbytes); |
| 0 | 2834 JVM_END |
| 2835 | |
| 2836 | |
| 2837 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
| 2838 JVMWrapper2("JVM_Available (0x%x)", fd); | |
| 2839 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2840 return os::available(fd, pbytes); |
| 0 | 2841 JVM_END |
| 2842 | |
| 2843 | |
| 2844 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
|
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
2845 JVMWrapper4("JVM_Lseek (0x%x, " INT64_FORMAT ", %d)", fd, (int64_t) offset, whence); |
| 0 | 2846 //%note jvm_r6 |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2847 return os::lseek(fd, offset, whence); |
| 0 | 2848 JVM_END |
| 2849 | |
| 2850 | |
| 2851 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
|
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
2852 JVMWrapper3("JVM_SetLength (0x%x, " INT64_FORMAT ")", fd, (int64_t) length); |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2853 return os::ftruncate(fd, length); |
| 0 | 2854 JVM_END |
| 2855 | |
| 2856 | |
| 2857 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
| 2858 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
| 2859 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2860 return os::fsync(fd); |
| 0 | 2861 JVM_END |
| 2862 | |
| 2863 | |
| 2864 // Printing support ////////////////////////////////////////////////// | |
| 2865 extern "C" { | |
| 2866 | |
|
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
2867 ATTRIBUTE_PRINTF(3, 0) |
| 0 | 2868 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { |
| 2869 // see bug 4399518, 4417214 | |
| 2870 if ((intptr_t)count <= 0) return -1; | |
| 2871 return vsnprintf(str, count, fmt, args); | |
| 2872 } | |
| 2873 | |
|
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
2874 ATTRIBUTE_PRINTF(3, 0) |
| 0 | 2875 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { |
| 2876 va_list args; | |
| 2877 int len; | |
| 2878 va_start(args, fmt); | |
| 2879 len = jio_vsnprintf(str, count, fmt, args); | |
| 2880 va_end(args); | |
| 2881 return len; | |
| 2882 } | |
| 2883 | |
|
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
2884 ATTRIBUTE_PRINTF(2,3) |
| 0 | 2885 int jio_fprintf(FILE* f, const char *fmt, ...) { |
| 2886 int len; | |
| 2887 va_list args; | |
| 2888 va_start(args, fmt); | |
| 2889 len = jio_vfprintf(f, fmt, args); | |
| 2890 va_end(args); | |
| 2891 return len; | |
| 2892 } | |
| 2893 | |
|
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
2894 ATTRIBUTE_PRINTF(2, 0) |
| 0 | 2895 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { |
| 2896 if (Arguments::vfprintf_hook() != NULL) { | |
| 2897 return Arguments::vfprintf_hook()(f, fmt, args); | |
| 2898 } else { | |
| 2899 return vfprintf(f, fmt, args); | |
| 2900 } | |
| 2901 } | |
| 2902 | |
|
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
2903 ATTRIBUTE_PRINTF(1, 2) |
| 2191 | 2904 JNIEXPORT int jio_printf(const char *fmt, ...) { |
| 0 | 2905 int len; |
| 2906 va_list args; | |
| 2907 va_start(args, fmt); | |
| 2908 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
| 2909 va_end(args); | |
| 2910 return len; | |
| 2911 } | |
| 2912 | |
| 2913 | |
| 2914 // HotSpot specific jio method | |
| 2915 void jio_print(const char* s) { | |
| 2916 // Try to make this function as atomic as possible. | |
| 2917 if (Arguments::vfprintf_hook() != NULL) { | |
| 2918 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
| 2919 } else { | |
|
513
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
431
diff
changeset
|
2920 // Make an unused local variable to avoid warning from gcc 4.x compiler. |
|
2328d1d3f8cf
6781583: Hotspot build fails on linux 64 bit platform with gcc 4.3.2
xlu
parents:
431
diff
changeset
|
2921 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
| 0 | 2922 } |
| 2923 } | |
| 2924 | |
| 2925 } // Extern C | |
| 2926 | |
| 2927 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
| 2928 | |
| 2929 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
| 2930 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
| 2931 // OSThread objects. The exception to this rule is when the target object is the thread | |
| 2932 // doing the operation, in which case we know that the thread won't exit until the | |
| 2933 // operation is done (all exits being voluntary). There are a few cases where it is | |
| 2934 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
| 2935 // you are alive. While these can still happen, they are not subject to deadlocks if | |
| 2936 // the lock is held while the operation occurs (this is not the case for suspend, for | |
| 2937 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
| 2938 // implementation is local to this file, we always lock Threads_lock for that one. | |
| 2939 | |
| 2940 static void thread_entry(JavaThread* thread, TRAPS) { | |
| 2941 HandleMark hm(THREAD); | |
| 2942 Handle obj(THREAD, thread->threadObj()); | |
| 2943 JavaValue result(T_VOID); | |
| 2944 JavaCalls::call_virtual(&result, | |
| 2945 obj, | |
| 1142 | 2946 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
2947 vmSymbols::run_method_name(), |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
2948 vmSymbols::void_method_signature(), |
| 0 | 2949 THREAD); |
| 2950 } | |
| 2951 | |
| 2952 | |
| 2953 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
| 2954 JVMWrapper("JVM_StartThread"); | |
| 2955 JavaThread *native_thread = NULL; | |
| 2956 | |
| 2957 // We cannot hold the Threads_lock when we throw an exception, | |
| 2958 // due to rank ordering issues. Example: we might need to grab the | |
| 2959 // Heap_lock while we construct the exception. | |
| 2960 bool throw_illegal_thread_state = false; | |
| 2961 | |
| 2962 // We must release the Threads_lock before we can post a jvmti event | |
| 2963 // in Thread::start. | |
| 2964 { | |
| 2965 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
| 2966 // we operate. | |
| 2967 MutexLocker mu(Threads_lock); | |
| 2968 | |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2969 // Since JDK 5 the java.lang.Thread threadStatus is used to prevent |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2970 // re-starting an already started thread, so we should usually find |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2971 // that the JavaThread is null. However for a JNI attached thread |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2972 // there is a small window between the Thread object being created |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2973 // (with its JavaThread set) and the update to its threadStatus, so we |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2974 // have to check for this |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2975 if (java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)) != NULL) { |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2976 throw_illegal_thread_state = true; |
| 0 | 2977 } else { |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2978 // We could also check the stillborn flag to see if this thread was already stopped, but |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2979 // for historical reasons we let the thread detect that itself when it starts running |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
2980 |
| 0 | 2981 jlong size = |
| 2982 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
| 2983 // Allocate the C++ Thread structure and create the native thread. The | |
| 2984 // stack size retrieved from java is signed, but the constructor takes | |
| 2985 // size_t (an unsigned type), so avoid passing negative values which would | |
| 2986 // result in really large stacks. | |
| 2987 size_t sz = size > 0 ? (size_t) size : 0; | |
| 2988 native_thread = new JavaThread(&thread_entry, sz); | |
| 2989 | |
| 2990 // At this point it may be possible that no osthread was created for the | |
| 2991 // JavaThread due to lack of memory. Check for this situation and throw | |
| 2992 // an exception if necessary. Eventually we may want to change this so | |
| 2993 // that we only grab the lock if the thread was created successfully - | |
| 2994 // then we can also do this check and throw the exception in the | |
| 2995 // JavaThread constructor. | |
| 2996 if (native_thread->osthread() != NULL) { | |
| 2997 // Note: the current thread is not being used within "prepare". | |
| 2998 native_thread->prepare(jthread); | |
| 2999 } | |
| 3000 } | |
| 3001 } | |
| 3002 | |
| 3003 if (throw_illegal_thread_state) { | |
| 3004 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
| 3005 } | |
| 3006 | |
| 3007 assert(native_thread != NULL, "Starting null thread?"); | |
| 3008 | |
| 3009 if (native_thread->osthread() == NULL) { | |
| 3010 // No one should hold a reference to the 'native_thread'. | |
| 3011 delete native_thread; | |
| 3012 if (JvmtiExport::should_post_resource_exhausted()) { | |
| 3013 JvmtiExport::post_resource_exhausted( | |
| 3014 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
| 3015 "unable to create new native thread"); | |
| 3016 } | |
| 3017 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
| 3018 "unable to create new native thread"); | |
| 3019 } | |
| 3020 | |
| 3021 Thread::start(native_thread); | |
| 3022 | |
| 3023 JVM_END | |
| 3024 | |
| 3025 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
| 3026 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
| 3027 // but is thought to be reliable and simple. In the case, where the receiver is the | |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
3028 // same thread as the sender, no safepoint is needed. |
| 0 | 3029 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
| 3030 JVMWrapper("JVM_StopThread"); | |
| 3031 | |
| 3032 oop java_throwable = JNIHandles::resolve(throwable); | |
| 3033 if (java_throwable == NULL) { | |
| 3034 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 3035 } | |
| 3036 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3037 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
|
4872
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4717
diff
changeset
|
3038 Events::log_exception(JavaThread::current(), |
|
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
never
parents:
4717
diff
changeset
|
3039 "JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", |
|
17937
78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
3040 p2i(receiver), p2i((address)java_thread), p2i(throwable)); |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
3041 // First check if thread is alive |
| 0 | 3042 if (receiver != NULL) { |
| 3043 // Check if exception is getting thrown at self (use oop equality, since the | |
| 3044 // target object might exit) | |
| 3045 if (java_thread == thread->threadObj()) { | |
| 3046 THROW_OOP(java_throwable); | |
| 3047 } else { | |
| 3048 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
| 3049 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
| 3050 } | |
| 3051 } | |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
3052 else { |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
3053 // Either: |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
3054 // - target thread has not been started before being stopped, or |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
3055 // - target thread already terminated |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
3056 // 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
|
3057 // but that is overkill as it doesn't matter. We must set the |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
3058 // 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
|
3059 // exited setting this flag has no affect |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
3060 java_lang_Thread::set_stillborn(java_thread); |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
3061 } |
| 0 | 3062 JVM_END |
| 3063 | |
| 3064 | |
| 3065 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
| 3066 JVMWrapper("JVM_IsThreadAlive"); | |
| 3067 | |
| 3068 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
| 3069 return java_lang_Thread::is_alive(thread_oop); | |
| 3070 JVM_END | |
| 3071 | |
| 3072 | |
| 3073 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
| 3074 JVMWrapper("JVM_SuspendThread"); | |
| 3075 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3076 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
| 3077 | |
| 3078 if (receiver != NULL) { | |
| 3079 // thread has run and has not exited (still on threads list) | |
| 3080 | |
| 3081 { | |
| 3082 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
| 3083 if (receiver->is_external_suspend()) { | |
| 3084 // Don't allow nested external suspend requests. We can't return | |
| 3085 // an error from this interface so just ignore the problem. | |
| 3086 return; | |
| 3087 } | |
| 3088 if (receiver->is_exiting()) { // thread is in the process of exiting | |
| 3089 return; | |
| 3090 } | |
| 3091 receiver->set_external_suspend(); | |
| 3092 } | |
| 3093 | |
| 3094 // java_suspend() will catch threads in the process of exiting | |
| 3095 // and will ignore them. | |
| 3096 receiver->java_suspend(); | |
| 3097 | |
| 3098 // It would be nice to have the following assertion in all the | |
| 3099 // time, but it is possible for a racing resume request to have | |
| 3100 // resumed this thread right after we suspended it. Temporarily | |
| 3101 // enable this assertion if you are chasing a different kind of | |
| 3102 // bug. | |
| 3103 // | |
| 3104 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
| 3105 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
| 3106 } | |
| 3107 JVM_END | |
| 3108 | |
| 3109 | |
| 3110 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
| 3111 JVMWrapper("JVM_ResumeThread"); | |
| 3112 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
| 3113 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
| 3114 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
| 3115 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
| 3116 // looks at it. | |
| 3117 MutexLocker ml(Threads_lock); | |
| 3118 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3119 if (thr != NULL) { | |
| 3120 // the thread has run and is not in the process of exiting | |
| 3121 thr->java_resume(); | |
| 3122 } | |
| 3123 JVM_END | |
| 3124 | |
| 3125 | |
| 3126 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
| 3127 JVMWrapper("JVM_SetThreadPriority"); | |
| 3128 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3129 MutexLocker ml(Threads_lock); | |
| 3130 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3131 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
| 3132 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 3133 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
| 3134 Thread::set_priority(thr, (ThreadPriority)prio); | |
| 3135 } | |
| 3136 JVM_END | |
| 3137 | |
| 3138 | |
| 3139 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
| 3140 JVMWrapper("JVM_Yield"); | |
| 3141 if (os::dont_yield()) return; | |
| 4006 | 3142 #ifndef USDT2 |
|
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|
3143 HS_DTRACE_PROBE0(hotspot, thread__yield); |
| 4006 | 3144 #else /* USDT2 */ |
| 3145 HOTSPOT_THREAD_YIELD(); | |
| 3146 #endif /* USDT2 */ | |
| 0 | 3147 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
| 3148 // Critical for similar threading behaviour | |
| 3149 if (ConvertYieldToSleep) { | |
| 3150 os::sleep(thread, MinSleepInterval, false); | |
| 3151 } else { | |
| 3152 os::yield(); | |
| 3153 } | |
| 3154 JVM_END | |
| 3155 | |
| 3156 | |
| 3157 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
| 3158 JVMWrapper("JVM_Sleep"); | |
| 3159 | |
| 3160 if (millis < 0) { | |
| 3161 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
| 3162 } | |
| 3163 | |
| 3164 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
| 3165 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 3166 } | |
| 3167 | |
| 3168 // Save current thread state and restore it at the end of this block. | |
| 3169 // And set new thread state to SLEEPING. | |
| 3170 JavaThreadSleepState jtss(thread); | |
| 3171 | |
| 4006 | 3172 #ifndef USDT2 |
|
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|
3173 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); |
| 4006 | 3174 #else /* USDT2 */ |
| 3175 HOTSPOT_THREAD_SLEEP_BEGIN( | |
| 3176 millis); | |
| 3177 #endif /* USDT2 */ | |
|
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|
3178 |
| 10405 | 3179 EventThreadSleep event; |
| 3180 | |
| 0 | 3181 if (millis == 0) { |
| 3182 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
| 3183 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
| 3184 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
| 3185 // for SOLARIS | |
| 3186 if (ConvertSleepToYield) { | |
| 3187 os::yield(); | |
| 3188 } else { | |
| 3189 ThreadState old_state = thread->osthread()->get_state(); | |
| 3190 thread->osthread()->set_state(SLEEPING); | |
| 3191 os::sleep(thread, MinSleepInterval, false); | |
| 3192 thread->osthread()->set_state(old_state); | |
| 3193 } | |
| 3194 } else { | |
| 3195 ThreadState old_state = thread->osthread()->get_state(); | |
| 3196 thread->osthread()->set_state(SLEEPING); | |
| 3197 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
| 3198 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
| 3199 // us while we were sleeping. We do not overwrite those. | |
| 3200 if (!HAS_PENDING_EXCEPTION) { | |
| 10405 | 3201 if (event.should_commit()) { |
| 3202 event.set_time(millis); | |
| 3203 event.commit(); | |
| 3204 } | |
| 4006 | 3205 #ifndef USDT2 |
|
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|
3206 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); |
| 4006 | 3207 #else /* USDT2 */ |
| 3208 HOTSPOT_THREAD_SLEEP_END( | |
| 3209 1); | |
| 3210 #endif /* USDT2 */ | |
| 0 | 3211 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
| 3212 // to properly restore the thread state. That's likely wrong. | |
| 3213 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 3214 } | |
| 3215 } | |
| 3216 thread->osthread()->set_state(old_state); | |
| 3217 } | |
| 10405 | 3218 if (event.should_commit()) { |
| 3219 event.set_time(millis); | |
| 3220 event.commit(); | |
| 3221 } | |
| 4006 | 3222 #ifndef USDT2 |
|
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|
3223 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); |
| 4006 | 3224 #else /* USDT2 */ |
| 3225 HOTSPOT_THREAD_SLEEP_END( | |
| 3226 0); | |
| 3227 #endif /* USDT2 */ | |
| 0 | 3228 JVM_END |
| 3229 | |
| 3230 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
| 3231 JVMWrapper("JVM_CurrentThread"); | |
| 3232 oop jthread = thread->threadObj(); | |
| 3233 assert (thread != NULL, "no current thread!"); | |
| 3234 return JNIHandles::make_local(env, jthread); | |
| 3235 JVM_END | |
| 3236 | |
| 3237 | |
| 3238 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
| 3239 JVMWrapper("JVM_CountStackFrames"); | |
| 3240 | |
| 3241 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3242 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3243 bool throw_illegal_thread_state = false; | |
| 3244 int count = 0; | |
| 3245 | |
| 3246 { | |
| 3247 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 3248 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 3249 // acquire of the lock | |
| 3250 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3251 | |
| 3252 if (thr == NULL) { | |
| 3253 // do nothing | |
| 3254 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
| 3255 // Check whether this java thread has been suspended already. If not, throws | |
| 3256 // IllegalThreadStateException. We defer to throw that exception until | |
| 3257 // Threads_lock is released since loading exception class has to leave VM. | |
| 3258 // The correct way to test a thread is actually suspended is | |
| 3259 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
| 3260 // the Threads_lock. The above tests are sufficient for our purposes | |
| 3261 // provided the walkability of the stack is stable - which it isn't | |
| 3262 // 100% but close enough for most practical purposes. | |
| 3263 throw_illegal_thread_state = true; | |
| 3264 } else { | |
| 3265 // Count all java activation, i.e., number of vframes | |
| 3266 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
| 3267 // Native frames are not counted | |
| 3268 if (!vfst.method()->is_native()) count++; | |
| 3269 } | |
| 3270 } | |
| 3271 } | |
| 3272 | |
| 3273 if (throw_illegal_thread_state) { | |
| 3274 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
| 3275 "this thread is not suspended"); | |
| 3276 } | |
| 3277 return count; | |
| 3278 JVM_END | |
| 3279 | |
| 3280 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
| 3281 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
| 3282 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
| 3283 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
| 3284 // outside the critical section. Threads_lock is hot so we want to minimize | |
| 3285 // the hold-time. A cleaner interface would be to decompose interrupt into | |
| 3286 // two steps. The 1st phase, performed under Threads_lock, would return | |
| 3287 // a closure that'd be invoked after Threads_lock was dropped. | |
| 3288 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
| 3289 // admit spurious wakeups. | |
| 3290 | |
| 3291 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
| 3292 JVMWrapper("JVM_Interrupt"); | |
| 3293 | |
| 3294 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3295 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3296 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 3297 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 3298 // acquire of the lock | |
| 3299 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3300 if (thr != NULL) { | |
| 3301 Thread::interrupt(thr); | |
| 3302 } | |
| 3303 JVM_END | |
| 3304 | |
| 3305 | |
| 3306 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
| 3307 JVMWrapper("JVM_IsInterrupted"); | |
| 3308 | |
| 3309 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3310 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3311 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 3312 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 3313 // acquire of the lock | |
| 3314 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3315 if (thr == NULL) { | |
| 3316 return JNI_FALSE; | |
| 3317 } else { | |
| 3318 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
| 3319 } | |
| 3320 JVM_END | |
| 3321 | |
| 3322 | |
| 3323 // Return true iff the current thread has locked the object passed in | |
| 3324 | |
| 3325 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
| 3326 JVMWrapper("JVM_HoldsLock"); | |
| 3327 assert(THREAD->is_Java_thread(), "sanity check"); | |
| 3328 if (obj == NULL) { | |
| 3329 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
| 3330 } | |
| 3331 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
| 3332 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
| 3333 JVM_END | |
| 3334 | |
| 3335 | |
| 3336 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
| 3337 JVMWrapper("JVM_DumpAllStacks"); | |
| 3338 VM_PrintThreads op; | |
| 3339 VMThread::execute(&op); | |
| 3340 if (JvmtiExport::should_post_data_dump()) { | |
| 3341 JvmtiExport::post_data_dump(); | |
| 3342 } | |
| 3343 JVM_END | |
| 3344 | |
| 4006 | 3345 JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name)) |
| 3346 JVMWrapper("JVM_SetNativeThreadName"); | |
| 3347 ResourceMark rm(THREAD); | |
| 3348 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3349 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 3350 // Thread naming only supported for the current thread, doesn't work for | |
| 3351 // target threads. | |
| 3352 if (Thread::current() == thr && !thr->has_attached_via_jni()) { | |
| 3353 // we don't set the name of an attached thread to avoid stepping | |
| 3354 // on other programs | |
| 3355 const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
| 3356 os::set_native_thread_name(thread_name); | |
| 3357 } | |
| 3358 JVM_END | |
| 0 | 3359 |
| 3360 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
| 3361 | |
| 3362 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
| 3363 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
| 3364 if (jthread->privileged_stack_top() == NULL) return false; | |
| 3365 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
| 3366 oop loader = jthread->privileged_stack_top()->class_loader(); | |
| 3367 if (loader == NULL) return true; | |
| 3368 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
| 3369 if (trusted) return true; | |
| 3370 } | |
| 3371 return false; | |
| 3372 } | |
| 3373 | |
| 3374 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
| 3375 JVMWrapper("JVM_CurrentLoadedClass"); | |
| 3376 ResourceMark rm(THREAD); | |
| 3377 | |
| 3378 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3379 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3380 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3381 if (trusted) return NULL; | |
| 3382 | |
|
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6271
diff
changeset
|
3383 Method* m = vfst.method(); |
| 0 | 3384 if (!m->is_native()) { |
|
6940
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8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
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6831
diff
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|
3385 InstanceKlass* holder = m->method_holder(); |
|
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
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6831
diff
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|
3386 oop loader = holder->class_loader(); |
| 0 | 3387 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
|
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
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6831
diff
changeset
|
3388 return (jclass) JNIHandles::make_local(env, holder->java_mirror()); |
| 0 | 3389 } |
| 3390 } | |
| 3391 } | |
| 3392 return NULL; | |
| 3393 JVM_END | |
| 3394 | |
| 3395 | |
| 3396 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
| 3397 JVMWrapper("JVM_CurrentClassLoader"); | |
| 3398 ResourceMark rm(THREAD); | |
| 3399 | |
| 3400 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3401 | |
| 3402 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3403 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3404 if (trusted) return NULL; | |
| 3405 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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6271
diff
changeset
|
3406 Method* m = vfst.method(); |
| 0 | 3407 if (!m->is_native()) { |
|
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
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6831
diff
changeset
|
3408 InstanceKlass* holder = m->method_holder(); |
| 0 | 3409 assert(holder->is_klass(), "just checking"); |
|
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
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6831
diff
changeset
|
3410 oop loader = holder->class_loader(); |
| 0 | 3411 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
| 3412 return JNIHandles::make_local(env, loader); | |
| 3413 } | |
| 3414 } | |
| 3415 } | |
| 3416 return NULL; | |
| 3417 JVM_END | |
| 3418 | |
| 3419 | |
| 3420 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
| 3421 JVMWrapper("JVM_GetClassContext"); | |
| 3422 ResourceMark rm(THREAD); | |
| 3423 JvmtiVMObjectAllocEventCollector oam; | |
|
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diff
changeset
|
3424 vframeStream vfst(thread); |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
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|
3425 |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3426 if (SystemDictionary::reflect_CallerSensitive_klass() != NULL) { |
|
16885e702c88
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diff
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|
3427 // This must only be called from SecurityManager.getClassContext |
|
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diff
changeset
|
3428 Method* m = vfst.method(); |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
3429 if (!(m->method_holder() == SystemDictionary::SecurityManager_klass() && |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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8031
diff
changeset
|
3430 m->name() == vmSymbols::getClassContext_name() && |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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8031
diff
changeset
|
3431 m->signature() == vmSymbols::void_class_array_signature())) { |
|
16885e702c88
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8031
diff
changeset
|
3432 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetClassContext must only be called from SecurityManager.getClassContext"); |
|
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|
3433 } |
|
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diff
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|
3434 } |
|
16885e702c88
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|
3435 |
|
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diff
changeset
|
3436 // Collect method holders |
|
11001
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drchase
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10343
diff
changeset
|
3437 GrowableArray<KlassHandle>* klass_array = new GrowableArray<KlassHandle>(); |
|
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changeset
|
3438 for (; !vfst.at_end(); vfst.security_next()) { |
|
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8031
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changeset
|
3439 Method* m = vfst.method(); |
| 0 | 3440 // Native frames are not returned |
|
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diff
changeset
|
3441 if (!m->is_ignored_by_security_stack_walk() && !m->is_native()) { |
|
16885e702c88
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changeset
|
3442 Klass* holder = m->method_holder(); |
| 0 | 3443 assert(holder->is_klass(), "just checking"); |
|
11001
c52abc8a0b08
8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
drchase
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10343
diff
changeset
|
3444 klass_array->append(holder); |
| 0 | 3445 } |
| 3446 } | |
| 3447 | |
| 3448 // Create result array of type [Ljava/lang/Class; | |
|
11001
c52abc8a0b08
8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
drchase
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10343
diff
changeset
|
3449 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), klass_array->length(), CHECK_NULL); |
| 0 | 3450 // Fill in mirrors corresponding to method holders |
|
11001
c52abc8a0b08
8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
drchase
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10343
diff
changeset
|
3451 for (int i = 0; i < klass_array->length(); i++) { |
|
c52abc8a0b08
8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
drchase
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10343
diff
changeset
|
3452 result->obj_at_put(i, klass_array->at(i)->java_mirror()); |
| 0 | 3453 } |
| 3454 | |
| 3455 return (jobjectArray) JNIHandles::make_local(env, result); | |
| 3456 JVM_END | |
| 3457 | |
| 3458 | |
| 3459 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
| 3460 JVMWrapper("JVM_ClassDepth"); | |
| 3461 ResourceMark rm(THREAD); | |
| 3462 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 3463 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
| 3464 | |
| 3465 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
|
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diff
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|
3466 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
|
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|
3467 if (class_name_sym == NULL) { |
| 0 | 3468 return -1; |
| 3469 } | |
| 3470 | |
| 3471 int depth = 0; | |
| 3472 | |
| 3473 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3474 if (!vfst.method()->is_native()) { | |
|
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diff
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|
3475 InstanceKlass* holder = vfst.method()->method_holder(); |
| 0 | 3476 assert(holder->is_klass(), "just checking"); |
|
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diff
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|
3477 if (holder->name() == class_name_sym) { |
| 0 | 3478 return depth; |
| 3479 } | |
| 3480 depth++; | |
| 3481 } | |
| 3482 } | |
| 3483 return -1; | |
| 3484 JVM_END | |
| 3485 | |
| 3486 | |
| 3487 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
| 3488 JVMWrapper("JVM_ClassLoaderDepth"); | |
| 3489 ResourceMark rm(THREAD); | |
| 3490 int depth = 0; | |
| 3491 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3492 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
| 3493 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3494 if (trusted) return -1; | |
| 3495 | |
|
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|
3496 Method* m = vfst.method(); |
| 0 | 3497 if (!m->is_native()) { |
|
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|
3498 InstanceKlass* holder = m->method_holder(); |
| 0 | 3499 assert(holder->is_klass(), "just checking"); |
|
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|
3500 oop loader = holder->class_loader(); |
| 0 | 3501 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
| 3502 return depth; | |
| 3503 } | |
| 3504 depth++; | |
| 3505 } | |
| 3506 } | |
| 3507 return -1; | |
| 3508 JVM_END | |
| 3509 | |
| 3510 | |
| 3511 // java.lang.Package //////////////////////////////////////////////////////////////// | |
| 3512 | |
| 3513 | |
| 3514 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
| 3515 JVMWrapper("JVM_GetSystemPackage"); | |
| 3516 ResourceMark rm(THREAD); | |
| 3517 JvmtiVMObjectAllocEventCollector oam; | |
| 3518 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
| 3519 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
| 3520 return (jstring) JNIHandles::make_local(result); | |
| 3521 JVM_END | |
| 3522 | |
| 3523 | |
| 3524 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
| 3525 JVMWrapper("JVM_GetSystemPackages"); | |
| 3526 JvmtiVMObjectAllocEventCollector oam; | |
| 3527 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
| 3528 return (jobjectArray) JNIHandles::make_local(result); | |
| 3529 JVM_END | |
| 3530 | |
| 3531 | |
| 3532 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
| 3533 | |
|
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|
3534 bool force_verify_field_access(Klass* current_class, Klass* field_class, AccessFlags access, bool classloader_only) { |
| 0 | 3535 if (current_class == NULL) { |
| 3536 return true; | |
| 3537 } | |
| 3538 if ((current_class == field_class) || access.is_public()) { | |
| 3539 return true; | |
| 3540 } | |
| 3541 | |
| 3542 if (access.is_protected()) { | |
| 3543 // See if current_class is a subclass of field_class | |
| 6983 | 3544 if (current_class->is_subclass_of(field_class)) { |
| 0 | 3545 return true; |
| 3546 } | |
| 3547 } | |
| 3548 | |
|
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|
3549 return (!access.is_private() && InstanceKlass::cast(current_class)->is_same_class_package(field_class)); |
| 0 | 3550 } |
| 3551 | |
| 3552 | |
| 3553 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
| 3554 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
| 3555 JVMWrapper("JVM_AllocateNewObject"); | |
| 3556 JvmtiVMObjectAllocEventCollector oam; | |
| 3557 // Receiver is not used | |
| 3558 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
| 3559 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
| 3560 | |
| 3561 // Cannot instantiate primitive types | |
| 3562 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
| 3563 ResourceMark rm(THREAD); | |
| 3564 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3565 } | |
| 3566 | |
| 3567 // Arrays not allowed here, must use JVM_AllocateNewArray | |
| 6983 | 3568 if (java_lang_Class::as_Klass(curr_mirror)->oop_is_array() || |
| 3569 java_lang_Class::as_Klass(init_mirror)->oop_is_array()) { | |
| 0 | 3570 ResourceMark rm(THREAD); |
| 3571 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3572 } | |
| 3573 | |
|
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|
3574 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_Klass(curr_mirror)); |
|
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diff
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|
3575 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_Klass(init_mirror)); |
| 0 | 3576 |
| 3577 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
| 3578 | |
| 3579 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
| 3580 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
| 3581 | |
| 3582 // Make sure klass is initialized, since we are about to instantiate one of them. | |
| 3583 curr_klass->initialize(CHECK_NULL); | |
| 3584 | |
| 3585 methodHandle m (THREAD, | |
| 3586 init_klass->find_method(vmSymbols::object_initializer_name(), | |
| 3587 vmSymbols::void_method_signature())); | |
| 3588 if (m.is_null()) { | |
| 3589 ResourceMark rm(THREAD); | |
| 3590 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
| 6983 | 3591 Method::name_and_sig_as_C_string(init_klass(), |
| 0 | 3592 vmSymbols::object_initializer_name(), |
| 3593 vmSymbols::void_method_signature())); | |
| 3594 } | |
| 3595 | |
| 3596 if (curr_klass == init_klass && !m->is_public()) { | |
| 3597 // Calling the constructor for class 'curr_klass'. | |
| 3598 // Only allow calls to a public no-arg constructor. | |
| 3599 // This path corresponds to creating an Externalizable object. | |
| 3600 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3601 } | |
| 3602 | |
| 3603 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
| 3604 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
| 3605 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3606 } | |
| 3607 | |
| 3608 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
| 3609 // Call constructor m. This might call a constructor higher up in the hierachy | |
| 3610 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
| 3611 | |
| 3612 return JNIHandles::make_local(obj()); | |
| 3613 JVM_END | |
| 3614 | |
| 3615 | |
| 3616 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
| 3617 JVMWrapper("JVM_AllocateNewArray"); | |
| 3618 JvmtiVMObjectAllocEventCollector oam; | |
| 3619 oop mirror = JNIHandles::resolve_non_null(currClass); | |
| 3620 | |
| 3621 if (java_lang_Class::is_primitive(mirror)) { | |
| 3622 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3623 } | |
|
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diff
changeset
|
3624 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 3625 oop result; |
| 3626 | |
|
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6271
diff
changeset
|
3627 if (k->oop_is_typeArray()) { |
| 0 | 3628 // typeArray |
|
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
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6725
diff
changeset
|
3629 result = TypeArrayKlass::cast(k)->allocate(length, CHECK_NULL); |
|
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diff
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|
3630 } else if (k->oop_is_objArray()) { |
| 0 | 3631 // objArray |
|
6831
d8ce2825b193
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coleenp
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6725
diff
changeset
|
3632 ObjArrayKlass* oak = ObjArrayKlass::cast(k); |
| 0 | 3633 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) |
| 3634 result = oak->allocate(length, CHECK_NULL); | |
| 3635 } else { | |
| 3636 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3637 } | |
| 3638 return JNIHandles::make_local(env, result); | |
| 3639 JVM_END | |
| 3640 | |
| 3641 | |
| 3642 // Return the first non-null class loader up the execution stack, or null | |
| 3643 // if only code from the null class loader is on the stack. | |
| 3644 | |
| 3645 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
| 3646 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3647 // UseNewReflection | |
| 3648 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
|
6940
18fb7da42534
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coleenp
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6831
diff
changeset
|
3649 oop loader = vfst.method()->method_holder()->class_loader(); |
| 0 | 3650 if (loader != NULL) { |
| 3651 return JNIHandles::make_local(env, loader); | |
| 3652 } | |
| 3653 } | |
| 3654 return NULL; | |
| 3655 JVM_END | |
| 3656 | |
| 3657 | |
| 3658 // Load a class relative to the most recent class on the stack with a non-null | |
| 3659 // classloader. | |
| 3660 // This function has been deprecated and should not be considered part of the | |
| 3661 // specified JVM interface. | |
| 3662 | |
| 3663 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
| 3664 jclass currClass, jstring currClassName)) | |
| 3665 JVMWrapper("JVM_LoadClass0"); | |
| 3666 // Receiver is not used | |
| 3667 ResourceMark rm(THREAD); | |
| 3668 | |
| 3669 // Class name argument is not guaranteed to be in internal format | |
| 3670 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
| 3671 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
| 3672 | |
| 3673 const char* str = java_lang_String::as_utf8_string(string()); | |
| 3674 | |
|
2177
3582bf76420e
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|
3675 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
| 0 | 3676 // It's impossible to create this class; the name cannot fit |
| 3677 // into the constant pool. | |
| 3678 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
| 3679 } | |
| 3680 | |
|
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|
3681 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
| 0 | 3682 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
| 3683 // Find the most recent class on the stack with a non-null classloader | |
| 3684 oop loader = NULL; | |
| 3685 oop protection_domain = NULL; | |
| 3686 if (curr_klass.is_null()) { | |
| 3687 for (vframeStream vfst(thread); | |
| 3688 !vfst.at_end() && loader == NULL; | |
| 3689 vfst.next()) { | |
| 3690 if (!vfst.method()->is_native()) { | |
|
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
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6831
diff
changeset
|
3691 InstanceKlass* holder = vfst.method()->method_holder(); |
|
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
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6831
diff
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|
3692 loader = holder->class_loader(); |
|
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
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6831
diff
changeset
|
3693 protection_domain = holder->protection_domain(); |
| 0 | 3694 } |
| 3695 } | |
| 3696 } else { | |
|
6725
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diff
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|
3697 Klass* curr_klass_oop = java_lang_Class::as_Klass(curr_klass()); |
|
da91efe96a93
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|
3698 loader = InstanceKlass::cast(curr_klass_oop)->class_loader(); |
|
da91efe96a93
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|
3699 protection_domain = InstanceKlass::cast(curr_klass_oop)->protection_domain(); |
| 0 | 3700 } |
| 3701 Handle h_loader(THREAD, loader); | |
| 3702 Handle h_prot (THREAD, protection_domain); | |
|
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3703 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
|
3704 false, thread); |
|
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
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579
diff
changeset
|
3705 if (TraceClassResolution && result != NULL) { |
|
6725
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6271
diff
changeset
|
3706 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
|
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
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parents:
579
diff
changeset
|
3707 } |
|
715dceaa89b7
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579
diff
changeset
|
3708 return result; |
| 0 | 3709 JVM_END |
| 3710 | |
| 3711 | |
| 3712 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
| 3713 | |
| 3714 | |
| 3715 // resolve array handle and check arguments | |
| 3716 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
| 3717 if (arr == NULL) { | |
| 3718 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 3719 } | |
| 3720 oop a = JNIHandles::resolve_non_null(arr); | |
|
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|
3721 if (!a->is_array() || (type_array_only && !a->is_typeArray())) { |
| 0 | 3722 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); |
| 3723 } | |
| 3724 return arrayOop(a); | |
| 3725 } | |
| 3726 | |
| 3727 | |
| 3728 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
| 3729 JVMWrapper("JVM_GetArrayLength"); | |
| 3730 arrayOop a = check_array(env, arr, false, CHECK_0); | |
| 3731 return a->length(); | |
| 3732 JVM_END | |
| 3733 | |
| 3734 | |
| 3735 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
| 3736 JVMWrapper("JVM_Array_Get"); | |
| 3737 JvmtiVMObjectAllocEventCollector oam; | |
| 3738 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
| 3739 jvalue value; | |
| 3740 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
| 3741 oop box = Reflection::box(&value, type, CHECK_NULL); | |
| 3742 return JNIHandles::make_local(env, box); | |
| 3743 JVM_END | |
| 3744 | |
| 3745 | |
| 3746 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
| 3747 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
| 3748 jvalue value; | |
| 3749 value.i = 0; // to initialize value before getting used in CHECK | |
| 3750 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
| 3751 assert(a->is_typeArray(), "just checking"); | |
| 3752 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
| 3753 BasicType wide_type = (BasicType) wCode; | |
| 3754 if (type != wide_type) { | |
| 3755 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
| 3756 } | |
| 3757 return value; | |
| 3758 JVM_END | |
| 3759 | |
| 3760 | |
| 3761 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
| 3762 JVMWrapper("JVM_SetArrayElement"); | |
| 3763 arrayOop a = check_array(env, arr, false, CHECK); | |
| 3764 oop box = JNIHandles::resolve(val); | |
| 3765 jvalue value; | |
| 3766 value.i = 0; // to initialize value before getting used in CHECK | |
| 3767 BasicType value_type; | |
| 3768 if (a->is_objArray()) { | |
| 3769 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
| 3770 value_type = Reflection::unbox_for_regular_object(box, &value); | |
| 3771 } else { | |
| 3772 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
| 3773 } | |
| 3774 Reflection::array_set(&value, a, index, value_type, CHECK); | |
| 3775 JVM_END | |
| 3776 | |
| 3777 | |
| 3778 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
| 3779 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
| 3780 arrayOop a = check_array(env, arr, true, CHECK); | |
| 3781 assert(a->is_typeArray(), "just checking"); | |
| 3782 BasicType value_type = (BasicType) vCode; | |
| 3783 Reflection::array_set(&v, a, index, value_type, CHECK); | |
| 3784 JVM_END | |
| 3785 | |
| 3786 | |
| 3787 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
| 3788 JVMWrapper("JVM_NewArray"); | |
| 3789 JvmtiVMObjectAllocEventCollector oam; | |
| 3790 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3791 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
| 3792 return JNIHandles::make_local(env, result); | |
| 3793 JVM_END | |
| 3794 | |
| 3795 | |
| 3796 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
| 3797 JVMWrapper("JVM_NewMultiArray"); | |
| 3798 JvmtiVMObjectAllocEventCollector oam; | |
| 3799 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
| 3800 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3801 assert(dim_array->is_typeArray(), "just checking"); | |
| 3802 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
| 3803 return JNIHandles::make_local(env, result); | |
| 3804 JVM_END | |
| 3805 | |
| 3806 | |
| 3807 // Networking library support //////////////////////////////////////////////////////////////////// | |
| 3808 | |
| 3809 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
| 3810 JVMWrapper("JVM_InitializeSocketLibrary"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
3811 return 0; |
| 0 | 3812 JVM_END |
| 3813 | |
| 3814 | |
| 3815 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
| 3816 JVMWrapper("JVM_Socket"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3817 return os::socket(domain, type, protocol); |
| 0 | 3818 JVM_END |
| 3819 | |
| 3820 | |
| 3821 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
| 3822 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
| 3823 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3824 return os::socket_close(fd); |
| 0 | 3825 JVM_END |
| 3826 | |
| 3827 | |
| 3828 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
| 3829 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
| 3830 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3831 return os::socket_shutdown(fd, howto); |
| 0 | 3832 JVM_END |
| 3833 | |
| 3834 | |
| 3835 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3836 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
| 3837 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3838 return os::recv(fd, buf, (size_t)nBytes, (uint)flags); |
| 0 | 3839 JVM_END |
| 3840 | |
| 3841 | |
| 3842 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3843 JVMWrapper2("JVM_Send (0x%x)", fd); | |
| 3844 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3845 return os::send(fd, buf, (size_t)nBytes, (uint)flags); |
| 0 | 3846 JVM_END |
| 3847 | |
| 3848 | |
| 3849 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
| 3850 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
| 3851 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3852 return os::timeout(fd, timeout); |
| 0 | 3853 JVM_END |
| 3854 | |
| 3855 | |
| 3856 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
| 3857 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
| 3858 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
3859 return os::listen(fd, count); |
| 0 | 3860 JVM_END |
| 3861 | |
| 3862 | |
| 3863 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
| 3864 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
| 3865 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3866 return os::connect(fd, him, (socklen_t)len); |
| 0 | 3867 JVM_END |
| 3868 | |
| 3869 | |
| 3870 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
| 3871 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
| 3872 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3873 return os::bind(fd, him, (socklen_t)len); |
| 0 | 3874 JVM_END |
| 3875 | |
| 3876 | |
| 3877 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
| 3878 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
| 3879 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3880 socklen_t socklen = (socklen_t)(*len); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3881 jint result = os::accept(fd, him, &socklen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3882 *len = (jint)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3883 return result; |
| 0 | 3884 JVM_END |
| 3885 | |
| 3886 | |
| 3887 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
| 3888 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
| 3889 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3890 socklen_t socklen = (socklen_t)(*fromlen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3891 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
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parents:
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diff
changeset
|
3892 *fromlen = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
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diff
changeset
|
3893 return result; |
| 0 | 3894 JVM_END |
| 3895 | |
| 3896 | |
| 3897 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
| 3898 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
| 3899 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3900 socklen_t socklen = (socklen_t)(*len); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3901 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
|
3902 *len = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
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parents:
4006
diff
changeset
|
3903 return result; |
| 0 | 3904 JVM_END |
| 3905 | |
| 3906 | |
| 3907 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
| 3908 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
| 3909 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3910 return os::sendto(fd, buf, (size_t)len, (uint)flags, to, (socklen_t)tolen); |
| 0 | 3911 JVM_END |
| 3912 | |
| 3913 | |
| 3914 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
| 3915 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
| 3916 //%note jvm_r6 | |
|
1980
828eafbd85cc
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1972
diff
changeset
|
3917 return os::socket_available(fd, pbytes); |
| 0 | 3918 JVM_END |
| 3919 | |
| 3920 | |
| 3921 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
| 3922 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
| 3923 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
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parents:
4006
diff
changeset
|
3924 socklen_t socklen = (socklen_t)(*optlen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
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parents:
4006
diff
changeset
|
3925 jint result = os::get_sock_opt(fd, level, optname, optval, &socklen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
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parents:
4006
diff
changeset
|
3926 *optlen = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3927 return result; |
| 0 | 3928 JVM_END |
| 3929 | |
| 3930 | |
| 3931 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
| 3932 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
| 3933 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3934 return os::set_sock_opt(fd, level, optname, optval, (socklen_t)optlen); |
| 0 | 3935 JVM_END |
| 3936 | |
|
4717
11c26bfcf8c7
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phh
parents:
4006
diff
changeset
|
3937 |
| 0 | 3938 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) |
| 3939 JVMWrapper("JVM_GetHostName"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3940 return os::get_host_name(name, namelen); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3941 JVM_END |
| 0 | 3942 |
|
4717
11c26bfcf8c7
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phh
parents:
4006
diff
changeset
|
3943 |
| 0 | 3944 // Library support /////////////////////////////////////////////////////////////////////////// |
| 3945 | |
| 3946 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
| 3947 //%note jvm_ct | |
| 3948 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
| 3949 char ebuf[1024]; | |
| 3950 void *load_result; | |
| 3951 { | |
| 3952 ThreadToNativeFromVM ttnfvm(thread); | |
|
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828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3953 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
| 0 | 3954 } |
| 3955 if (load_result == NULL) { | |
| 3956 char msg[1024]; | |
| 3957 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
| 3958 // Since 'ebuf' may contain a string encoded using | |
| 3959 // platform encoding scheme, we need to pass | |
| 3960 // Exceptions::unsafe_to_utf8 to the new_exception method | |
| 3961 // as the last argument. See bug 6367357. | |
| 3962 Handle h_exception = | |
| 3963 Exceptions::new_exception(thread, | |
| 3964 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
| 3965 msg, Exceptions::unsafe_to_utf8); | |
| 3966 | |
| 3967 THROW_HANDLE_0(h_exception); | |
| 3968 } | |
| 3969 return load_result; | |
| 3970 JVM_END | |
| 3971 | |
| 3972 | |
| 3973 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
| 3974 JVMWrapper("JVM_UnloadLibrary"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3975 os::dll_unload(handle); |
| 0 | 3976 JVM_END |
| 3977 | |
| 3978 | |
| 3979 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
| 3980 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3981 return os::dll_lookup(handle, name); |
| 0 | 3982 JVM_END |
| 3983 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3984 |
| 0 | 3985 // Floating point support //////////////////////////////////////////////////////////////////// |
| 3986 | |
| 3987 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
| 3988 JVMWrapper("JVM_IsNaN"); | |
| 3989 return g_isnan(a); | |
| 3990 JVM_END | |
| 3991 | |
| 3992 | |
| 3993 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
| 3994 | |
| 3995 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
| 3996 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
| 3997 return Threads::is_supported_jni_version_including_1_1(version); | |
| 3998 JVM_END | |
| 3999 | |
| 4000 | |
| 4001 // String support /////////////////////////////////////////////////////////////////////////// | |
| 4002 | |
| 4003 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
| 4004 JVMWrapper("JVM_InternString"); | |
| 4005 JvmtiVMObjectAllocEventCollector oam; | |
| 4006 if (str == NULL) return NULL; | |
| 4007 oop string = JNIHandles::resolve_non_null(str); | |
| 4008 oop result = StringTable::intern(string, CHECK_NULL); | |
| 4009 return (jstring) JNIHandles::make_local(env, result); | |
| 4010 JVM_END | |
| 4011 | |
| 4012 | |
| 4013 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
| 4014 | |
| 4015 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
| 4016 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
| 4017 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
| 4018 // that only works with java threads. | |
| 4019 | |
| 4020 | |
| 4021 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
| 4022 VM_Exit::block_if_vm_exited(); | |
| 4023 JVMWrapper("JVM_RawMonitorCreate"); | |
| 4024 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
| 4025 } | |
| 4026 | |
| 4027 | |
| 4028 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
| 4029 VM_Exit::block_if_vm_exited(); | |
| 4030 JVMWrapper("JVM_RawMonitorDestroy"); | |
| 4031 delete ((Mutex*) mon); | |
| 4032 } | |
| 4033 | |
| 4034 | |
| 4035 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
| 4036 VM_Exit::block_if_vm_exited(); | |
| 4037 JVMWrapper("JVM_RawMonitorEnter"); | |
| 4038 ((Mutex*) mon)->jvm_raw_lock(); | |
| 4039 return 0; | |
| 4040 } | |
| 4041 | |
| 4042 | |
| 4043 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
| 4044 VM_Exit::block_if_vm_exited(); | |
| 4045 JVMWrapper("JVM_RawMonitorExit"); | |
| 4046 ((Mutex*) mon)->jvm_raw_unlock(); | |
| 4047 } | |
| 4048 | |
| 4049 | |
| 4050 // Support for Serialization | |
| 4051 | |
| 4052 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
| 4053 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
| 4054 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
| 4055 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
| 4056 | |
| 4057 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
| 4058 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
| 4059 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
| 4060 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
| 4061 | |
| 4062 | |
| 4063 void initialize_converter_functions() { | |
| 4064 if (JDK_Version::is_gte_jdk14x_version()) { | |
| 4065 // These functions only exist for compatibility with 1.3.1 and earlier | |
| 4066 return; | |
| 4067 } | |
| 4068 | |
| 4069 // called from universe_post_init() | |
| 4070 assert( | |
| 4071 int_bits_to_float_fn == NULL && | |
| 4072 long_bits_to_double_fn == NULL && | |
| 4073 float_to_int_bits_fn == NULL && | |
| 4074 double_to_long_bits_fn == NULL , | |
| 4075 "initialization done twice" | |
| 4076 ); | |
| 4077 // initialize | |
| 4078 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
| 4079 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
| 4080 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
| 4081 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
| 4082 // verify | |
| 4083 assert( | |
| 4084 int_bits_to_float_fn != NULL && | |
| 4085 long_bits_to_double_fn != NULL && | |
| 4086 float_to_int_bits_fn != NULL && | |
| 4087 double_to_long_bits_fn != NULL , | |
| 4088 "initialization failed" | |
| 4089 ); | |
| 4090 } | |
| 4091 | |
| 4092 | |
| 4093 | |
| 4094 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
| 4095 | |
| 18051 | 4096 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, |
| 4097 Handle loader, Handle protection_domain, | |
| 4098 jboolean throwError, TRAPS) { | |
| 0 | 4099 // Security Note: |
| 4100 // The Java level wrapper will perform the necessary security check allowing | |
| 18051 | 4101 // us to pass the NULL as the initiating class loader. The VM is responsible for |
| 4102 // the checkPackageAccess relative to the initiating class loader via the | |
| 4103 // protection_domain. The protection_domain is passed as NULL by the java code | |
| 4104 // if there is no security manager in 3-arg Class.forName(). | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
4105 Klass* klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); |
|
878
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
4106 |
| 0 | 4107 KlassHandle klass_handle(THREAD, klass); |
| 4108 // Check if we should initialize the class | |
| 4109 if (init && klass_handle->oop_is_instance()) { | |
| 4110 klass_handle->initialize(CHECK_NULL); | |
| 4111 } | |
| 4112 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
| 4113 } | |
| 4114 | |
| 4115 | |
| 4116 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
| 4117 | |
| 4118 #ifndef PRODUCT | |
| 4119 | |
| 4120 extern "C" { | |
| 4121 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
| 4122 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
| 4123 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
| 4124 } | |
| 4125 | |
| 4126 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
| 4127 JVMWrapper("JVM_AccessBoolVMFlag"); | |
|
12322
72b7e96c1922
8024545: make develop and notproduct flag values available in product builds
twisti
parents:
12264
diff
changeset
|
4128 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, Flag::INTERNAL); |
| 0 | 4129 JVM_END |
| 4130 | |
| 4131 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
| 4132 JVMWrapper("JVM_AccessVMIntFlag"); | |
| 4133 intx v; | |
|
12322
72b7e96c1922
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twisti
parents:
12264
diff
changeset
|
4134 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, Flag::INTERNAL); |
| 0 | 4135 *value = (jint)v; |
| 4136 return result; | |
| 4137 JVM_END | |
| 4138 | |
| 4139 | |
| 4140 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
| 4141 JVMWrapper("JVM_VMBreakPoint"); | |
| 4142 oop the_obj = JNIHandles::resolve(obj); | |
| 4143 BREAKPOINT; | |
| 4144 JVM_END | |
| 4145 | |
| 4146 | |
| 4147 #endif | |
| 4148 | |
| 4149 | |
| 4150 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4151 | |
| 4152 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
| 4153 JVMWrapper("JVM_InvokeMethod"); | |
| 4154 Handle method_handle; | |
| 4155 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
| 4156 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
| 4157 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
| 4158 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4159 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
| 4160 jobject res = JNIHandles::make_local(env, result); | |
| 4161 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4162 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
| 4163 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
| 4164 if (java_lang_Class::is_primitive(ret_type)) { | |
| 4165 // Only for primitive type vm allocates memory for java object. | |
| 4166 // See box() method. | |
| 4167 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4168 } | |
| 4169 } | |
| 4170 return res; | |
| 4171 } else { | |
| 4172 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
| 4173 } | |
| 4174 JVM_END | |
| 4175 | |
| 4176 | |
| 4177 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
| 4178 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
| 4179 oop constructor_mirror = JNIHandles::resolve(c); | |
| 4180 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4181 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
| 4182 jobject res = JNIHandles::make_local(env, result); | |
| 4183 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4184 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4185 } | |
| 4186 return res; | |
| 4187 JVM_END | |
| 4188 | |
| 4189 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4190 | |
| 4191 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
| 4192 JVMWrapper("JVM_SupportsCX8"); | |
| 4193 return VM_Version::supports_cx8(); | |
| 4194 JVM_END | |
| 4195 | |
| 4196 | |
| 4197 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
| 4198 JVMWrapper("JVM_CX8Field"); | |
| 4199 jlong res; | |
| 4200 oop o = JNIHandles::resolve(obj); | |
| 4201 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 4202 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
| 4203 | |
| 4204 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
| 4205 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
| 4206 | |
| 4207 return res == oldVal; | |
| 4208 JVM_END | |
| 4209 | |
|
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4210 // DTrace /////////////////////////////////////////////////////////////////// |
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4211 |
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4212 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
|
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4213 JVMWrapper("JVM_DTraceGetVersion"); |
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4214 return (jint)JVM_TRACING_DTRACE_VERSION; |
|
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4215 JVM_END |
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4216 |
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4217 JVM_ENTRY(jlong,JVM_DTraceActivate( |
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4218 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
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4219 JVM_DTraceProvider* providers)) |
|
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4220 JVMWrapper("JVM_DTraceActivate"); |
|
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4221 return DTraceJSDT::activate( |
|
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4222 version, module_name, providers_count, providers, CHECK_0); |
|
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4223 JVM_END |
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4224 |
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4225 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
|
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4226 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
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4227 return DTraceJSDT::is_probe_enabled(method); |
|
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4228 JVM_END |
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4229 |
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4230 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
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4231 JVMWrapper("JVM_DTraceDispose"); |
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4232 DTraceJSDT::dispose(handle); |
|
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4233 JVM_END |
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4234 |
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4235 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
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4236 JVMWrapper("JVM_DTraceIsSupported"); |
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4237 return DTraceJSDT::is_supported(); |
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4238 JVM_END |
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4239 |
| 0 | 4240 // Returns an array of all live Thread objects (VM internal JavaThreads, |
| 4241 // jvmti agent threads, and JNI attaching threads are skipped) | |
| 4242 // See CR 6404306 regarding JNI attaching threads | |
| 4243 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
| 4244 ResourceMark rm(THREAD); | |
| 4245 ThreadsListEnumerator tle(THREAD, false, false); | |
| 4246 JvmtiVMObjectAllocEventCollector oam; | |
| 4247 | |
| 4248 int num_threads = tle.num_threads(); | |
| 1142 | 4249 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
| 0 | 4250 objArrayHandle threads_ah(THREAD, r); |
| 4251 | |
| 4252 for (int i = 0; i < num_threads; i++) { | |
| 4253 Handle h = tle.get_threadObj(i); | |
| 4254 threads_ah->obj_at_put(i, h()); | |
| 4255 } | |
| 4256 | |
| 4257 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
| 4258 JVM_END | |
| 4259 | |
| 4260 | |
| 4261 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
| 4262 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
| 4263 // the corresponding entry in the given threads array | |
| 4264 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
| 4265 JVMWrapper("JVM_DumpThreads"); | |
| 4266 JvmtiVMObjectAllocEventCollector oam; | |
| 4267 | |
| 4268 // Check if threads is null | |
| 4269 if (threads == NULL) { | |
| 4270 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4271 } | |
| 4272 | |
| 4273 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
| 4274 objArrayHandle ah(THREAD, a); | |
| 4275 int num_threads = ah->length(); | |
| 4276 // check if threads is non-empty array | |
| 4277 if (num_threads == 0) { | |
| 4278 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
| 4279 } | |
| 4280 | |
| 4281 // check if threads is not an array of objects of Thread class | |
|
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4282 Klass* k = ObjArrayKlass::cast(ah->klass())->element_klass(); |
| 1142 | 4283 if (k != SystemDictionary::Thread_klass()) { |
| 0 | 4284 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
| 4285 } | |
| 4286 | |
| 4287 ResourceMark rm(THREAD); | |
| 4288 | |
| 4289 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
| 4290 for (int i = 0; i < num_threads; i++) { | |
| 4291 oop thread_obj = ah->obj_at(i); | |
| 4292 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
| 4293 thread_handle_array->append(h); | |
| 4294 } | |
| 4295 | |
| 4296 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
| 4297 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
| 4298 | |
| 4299 JVM_END | |
| 4300 | |
| 4301 // JVM monitoring and management support | |
| 4302 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
| 4303 return Management::get_jmm_interface(version); | |
| 4304 JVM_END | |
| 4305 | |
| 4306 // com.sun.tools.attach.VirtualMachine agent properties support | |
| 4307 // | |
| 4308 // Initialize the agent properties with the properties maintained in the VM | |
| 4309 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
| 4310 JVMWrapper("JVM_InitAgentProperties"); | |
| 4311 ResourceMark rm; | |
| 4312 | |
| 4313 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
| 4314 | |
| 4315 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
| 4316 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
| 4317 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
| 4318 return properties; | |
| 4319 JVM_END | |
| 4320 | |
| 4321 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
| 4322 { | |
| 4323 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
| 4324 JvmtiVMObjectAllocEventCollector oam; | |
| 4325 | |
| 4326 if (ofClass == NULL) { | |
| 4327 return NULL; | |
| 4328 } | |
| 4329 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
| 4330 // Special handling for primitive objects | |
| 4331 if (java_lang_Class::is_primitive(mirror())) { | |
| 4332 return NULL; | |
| 4333 } | |
|
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4334 Klass* k = java_lang_Class::as_Klass(mirror()); |
| 6983 | 4335 if (!k->oop_is_instance()) { |
| 0 | 4336 return NULL; |
| 4337 } | |
| 4338 instanceKlassHandle ik_h(THREAD, k); | |
| 4339 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
| 4340 if (encl_method_class_idx == 0) { | |
| 4341 return NULL; | |
| 4342 } | |
| 1142 | 4343 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
| 0 | 4344 objArrayHandle dest(THREAD, dest_o); |
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4345 Klass* enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); |
| 6983 | 4346 dest->obj_at_put(0, enc_k->java_mirror()); |
| 0 | 4347 int encl_method_method_idx = ik_h->enclosing_method_method_index(); |
| 4348 if (encl_method_method_idx != 0) { | |
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4349 Symbol* sym = ik_h->constants()->symbol_at( |
| 0 | 4350 extract_low_short_from_int( |
| 4351 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4352 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4353 dest->obj_at_put(1, str()); | |
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4354 sym = ik_h->constants()->symbol_at( |
| 0 | 4355 extract_high_short_from_int( |
| 4356 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4357 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4358 dest->obj_at_put(2, str()); | |
| 4359 } | |
| 4360 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 4361 } | |
| 4362 JVM_END | |
| 4363 | |
| 4364 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
| 4365 jint javaThreadState)) | |
| 4366 { | |
| 4367 // If new thread states are added in future JDK and VM versions, | |
| 4368 // this should check if the JDK version is compatible with thread | |
| 4369 // states supported by the VM. Return NULL if not compatible. | |
| 4370 // | |
| 4371 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4372 // to the Java thread state that the JDK supports. | |
| 4373 // | |
| 4374 | |
| 4375 typeArrayHandle values_h; | |
| 4376 switch (javaThreadState) { | |
| 4377 case JAVA_THREAD_STATE_NEW : { | |
| 4378 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4379 values_h = typeArrayHandle(THREAD, r); | |
| 4380 values_h->int_at_put(0, java_lang_Thread::NEW); | |
| 4381 break; | |
| 4382 } | |
| 4383 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4384 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4385 values_h = typeArrayHandle(THREAD, r); | |
| 4386 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
| 4387 break; | |
| 4388 } | |
| 4389 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4390 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4391 values_h = typeArrayHandle(THREAD, r); | |
| 4392 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
| 4393 break; | |
| 4394 } | |
| 4395 case JAVA_THREAD_STATE_WAITING : { | |
| 4396 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
| 4397 values_h = typeArrayHandle(THREAD, r); | |
| 4398 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
| 4399 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
| 4400 break; | |
| 4401 } | |
| 4402 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4403 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
| 4404 values_h = typeArrayHandle(THREAD, r); | |
| 4405 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
| 4406 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
| 4407 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
| 4408 break; | |
| 4409 } | |
| 4410 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4411 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4412 values_h = typeArrayHandle(THREAD, r); | |
| 4413 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
| 4414 break; | |
| 4415 } | |
| 4416 default: | |
| 4417 // Unknown state - probably incompatible JDK version | |
| 4418 return NULL; | |
| 4419 } | |
| 4420 | |
| 4421 return (jintArray) JNIHandles::make_local(env, values_h()); | |
| 4422 } | |
| 4423 JVM_END | |
| 4424 | |
| 4425 | |
| 4426 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
| 4427 jint javaThreadState, | |
| 4428 jintArray values)) | |
| 4429 { | |
| 4430 // If new thread states are added in future JDK and VM versions, | |
| 4431 // this should check if the JDK version is compatible with thread | |
| 4432 // states supported by the VM. Return NULL if not compatible. | |
| 4433 // | |
| 4434 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4435 // to the Java thread state that the JDK supports. | |
| 4436 // | |
| 4437 | |
| 4438 ResourceMark rm; | |
| 4439 | |
| 4440 // Check if threads is null | |
| 4441 if (values == NULL) { | |
| 4442 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4443 } | |
| 4444 | |
| 4445 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
| 4446 typeArrayHandle values_h(THREAD, v); | |
| 4447 | |
| 4448 objArrayHandle names_h; | |
| 4449 switch (javaThreadState) { | |
| 4450 case JAVA_THREAD_STATE_NEW : { | |
| 4451 assert(values_h->length() == 1 && | |
| 4452 values_h->int_at(0) == java_lang_Thread::NEW, | |
| 4453 "Invalid threadStatus value"); | |
| 4454 | |
| 1142 | 4455 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4456 1, /* only 1 substate */ |
| 4457 CHECK_NULL); | |
| 4458 names_h = objArrayHandle(THREAD, r); | |
| 4459 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
| 4460 names_h->obj_at_put(0, name()); | |
| 4461 break; | |
| 4462 } | |
| 4463 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4464 assert(values_h->length() == 1 && | |
| 4465 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
| 4466 "Invalid threadStatus value"); | |
| 4467 | |
| 1142 | 4468 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4469 1, /* only 1 substate */ |
| 4470 CHECK_NULL); | |
| 4471 names_h = objArrayHandle(THREAD, r); | |
| 4472 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
| 4473 names_h->obj_at_put(0, name()); | |
| 4474 break; | |
| 4475 } | |
| 4476 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4477 assert(values_h->length() == 1 && | |
| 4478 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
| 4479 "Invalid threadStatus value"); | |
| 4480 | |
| 1142 | 4481 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4482 1, /* only 1 substate */ |
| 4483 CHECK_NULL); | |
| 4484 names_h = objArrayHandle(THREAD, r); | |
| 4485 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
| 4486 names_h->obj_at_put(0, name()); | |
| 4487 break; | |
| 4488 } | |
| 4489 case JAVA_THREAD_STATE_WAITING : { | |
| 4490 assert(values_h->length() == 2 && | |
| 4491 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
| 4492 values_h->int_at(1) == java_lang_Thread::PARKED, | |
| 4493 "Invalid threadStatus value"); | |
| 1142 | 4494 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4495 2, /* number of substates */ |
| 4496 CHECK_NULL); | |
| 4497 names_h = objArrayHandle(THREAD, r); | |
| 4498 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
| 4499 CHECK_NULL); | |
| 4500 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
| 4501 CHECK_NULL); | |
| 4502 names_h->obj_at_put(0, name0()); | |
| 4503 names_h->obj_at_put(1, name1()); | |
| 4504 break; | |
| 4505 } | |
| 4506 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4507 assert(values_h->length() == 3 && | |
| 4508 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
| 4509 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
| 4510 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
| 4511 "Invalid threadStatus value"); | |
| 1142 | 4512 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4513 3, /* number of substates */ |
| 4514 CHECK_NULL); | |
| 4515 names_h = objArrayHandle(THREAD, r); | |
| 4516 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
| 4517 CHECK_NULL); | |
| 4518 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
| 4519 CHECK_NULL); | |
| 4520 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
| 4521 CHECK_NULL); | |
| 4522 names_h->obj_at_put(0, name0()); | |
| 4523 names_h->obj_at_put(1, name1()); | |
| 4524 names_h->obj_at_put(2, name2()); | |
| 4525 break; | |
| 4526 } | |
| 4527 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4528 assert(values_h->length() == 1 && | |
| 4529 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
| 4530 "Invalid threadStatus value"); | |
| 1142 | 4531 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4532 1, /* only 1 substate */ |
| 4533 CHECK_NULL); | |
| 4534 names_h = objArrayHandle(THREAD, r); | |
| 4535 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
| 4536 names_h->obj_at_put(0, name()); | |
| 4537 break; | |
| 4538 } | |
| 4539 default: | |
| 4540 // Unknown state - probably incompatible JDK version | |
| 4541 return NULL; | |
| 4542 } | |
| 4543 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
| 4544 } | |
| 4545 JVM_END | |
| 4546 | |
| 4547 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
| 4548 { | |
|
20690
d4caf9c96afd
8035893: JVM_GetVersionInfo fails to zero structure
igerasim
parents:
20677
diff
changeset
|
4549 memset(info, 0, info_size); |
| 0 | 4550 |
| 4551 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
| 4552 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4553 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4554 | |
| 4555 // when we add a new capability in the jvm_version_info struct, we should also | |
| 4556 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
| 4557 // counter defined in runtimeService.cpp. | |
| 4558 info->is_attachable = AttachListener::is_attach_supported(); | |
| 4559 } | |
| 4560 JVM_END |