Mercurial > hg > truffle
annotate src/share/vm/prims/jvm.cpp @ 20619:b12a2a9b05ca
8056240: Investigate increased GC remark time after class unloading changes in CRM Fuse
Reviewed-by: mgerdin, coleenp, bdelsart
| author | stefank |
|---|---|
| date | Thu, 02 Oct 2014 10:55:36 +0200 |
| parents | 4cb90023bf2b |
| children | fe34c5ab0b35 |
| 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"; | |
| 386 #else | |
| 387 const char* compiler_name = ""; | |
| 388 #endif // compilers | |
| 389 #endif // TIERED | |
| 390 | |
| 391 if (*compiler_name != '\0' && | |
| 392 (Arguments::mode() != Arguments::_int)) { | |
| 393 PUTPROP(props, "sun.management.compiler", compiler_name); | |
| 394 } | |
| 395 } | |
| 396 | |
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397 const char* enableSharedLookupCache = "false"; |
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398 #if INCLUDE_CDS |
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399 if (ClassLoaderExt::is_lookup_cache_enabled()) { |
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400 enableSharedLookupCache = "true"; |
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401 } |
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402 #endif |
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403 PUTPROP(props, "sun.cds.enableSharedLookupCache", enableSharedLookupCache); |
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404 |
| 0 | 405 return properties; |
| 406 JVM_END | |
| 407 | |
| 408 | |
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409 /* |
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410 * Return the temporary directory that the VM uses for the attach |
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411 * and perf data files. |
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412 * |
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413 * It is important that this directory is well-known and the |
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414 * same for all VM instances. It cannot be affected by configuration |
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415 * variables such as java.io.tmpdir. |
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416 */ |
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417 JVM_ENTRY(jstring, JVM_GetTemporaryDirectory(JNIEnv *env)) |
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418 JVMWrapper("JVM_GetTemporaryDirectory"); |
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419 HandleMark hm(THREAD); |
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420 const char* temp_dir = os::get_temp_directory(); |
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421 Handle h = java_lang_String::create_from_platform_dependent_str(temp_dir, CHECK_NULL); |
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422 return (jstring) JNIHandles::make_local(env, h()); |
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423 JVM_END |
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424 |
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425 |
| 0 | 426 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// |
| 427 | |
| 428 extern volatile jint vm_created; | |
| 429 | |
| 430 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
| 431 if (vm_created != 0 && (code == 0)) { | |
| 432 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
| 433 Universe::run_finalizers_on_exit(); | |
| 434 } | |
| 435 before_exit(thread); | |
| 436 vm_exit(code); | |
| 437 JVM_END | |
| 438 | |
| 439 | |
| 440 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
| 441 before_exit(thread); | |
| 442 vm_exit(code); | |
| 443 JVM_END | |
| 444 | |
| 445 | |
| 446 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
| 447 register_on_exit_function(func); | |
| 448 JVM_END | |
| 449 | |
| 450 | |
| 451 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
| 452 JVMWrapper("JVM_GC"); | |
| 453 if (!DisableExplicitGC) { | |
| 454 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
| 455 } | |
| 456 JVM_END | |
| 457 | |
| 458 | |
| 459 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
| 460 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
| 461 return Universe::heap()->millis_since_last_gc(); | |
| 462 JVM_END | |
| 463 | |
| 464 | |
| 465 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
| 466 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
| 467 JVM_END | |
| 468 | |
| 469 | |
| 470 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
| 471 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
| 472 JVM_END | |
| 473 | |
| 474 static inline jlong convert_size_t_to_jlong(size_t val) { | |
| 475 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
| 476 NOT_LP64 (return (jlong)val;) | |
| 477 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
| 478 } | |
| 479 | |
| 480 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
| 481 JVMWrapper("JVM_TotalMemory"); | |
| 482 size_t n = Universe::heap()->capacity(); | |
| 483 return convert_size_t_to_jlong(n); | |
| 484 JVM_END | |
| 485 | |
| 486 | |
| 487 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
| 488 JVMWrapper("JVM_FreeMemory"); | |
| 489 CollectedHeap* ch = Universe::heap(); | |
|
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490 size_t n; |
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491 { |
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492 MutexLocker x(Heap_lock); |
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493 n = ch->capacity() - ch->used(); |
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494 } |
| 0 | 495 return convert_size_t_to_jlong(n); |
| 496 JVM_END | |
| 497 | |
| 498 | |
| 499 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
| 500 JVMWrapper("JVM_MaxMemory"); | |
| 501 size_t n = Universe::heap()->max_capacity(); | |
| 502 return convert_size_t_to_jlong(n); | |
| 503 JVM_END | |
| 504 | |
| 505 | |
| 506 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
| 507 JVMWrapper("JVM_ActiveProcessorCount"); | |
| 508 return os::active_processor_count(); | |
| 509 JVM_END | |
| 510 | |
| 511 | |
| 512 | |
| 513 // java.lang.Throwable ////////////////////////////////////////////////////// | |
| 514 | |
| 515 | |
| 516 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
| 517 JVMWrapper("JVM_FillInStackTrace"); | |
| 518 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
| 519 java_lang_Throwable::fill_in_stack_trace(exception); | |
| 520 JVM_END | |
| 521 | |
| 522 | |
| 523 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
| 524 JVMWrapper("JVM_GetStackTraceDepth"); | |
| 525 oop exception = JNIHandles::resolve(throwable); | |
| 526 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
| 527 JVM_END | |
| 528 | |
| 529 | |
| 530 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
| 531 JVMWrapper("JVM_GetStackTraceElement"); | |
| 532 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
| 533 oop exception = JNIHandles::resolve(throwable); | |
| 534 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
| 535 return JNIHandles::make_local(env, element); | |
| 536 JVM_END | |
| 537 | |
| 538 | |
| 539 // java.lang.Object /////////////////////////////////////////////// | |
| 540 | |
| 541 | |
| 542 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
| 543 JVMWrapper("JVM_IHashCode"); | |
| 544 // as implemented in the classic virtual machine; return 0 if object is NULL | |
| 545 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
| 546 JVM_END | |
| 547 | |
| 548 | |
| 549 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
| 550 JVMWrapper("JVM_MonitorWait"); | |
| 551 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 552 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
| 553 if (JvmtiExport::should_post_monitor_wait()) { | |
| 554 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
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555 |
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556 // The current thread already owns the monitor and it has not yet |
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557 // been added to the wait queue so the current thread cannot be |
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558 // made the successor. This means that the JVMTI_EVENT_MONITOR_WAIT |
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559 // event handler cannot accidentally consume an unpark() meant for |
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560 // the ParkEvent associated with this ObjectMonitor. |
| 0 | 561 } |
| 562 ObjectSynchronizer::wait(obj, ms, CHECK); | |
| 563 JVM_END | |
| 564 | |
| 565 | |
| 566 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
| 567 JVMWrapper("JVM_MonitorNotify"); | |
| 568 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 569 ObjectSynchronizer::notify(obj, CHECK); | |
| 570 JVM_END | |
| 571 | |
| 572 | |
| 573 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
| 574 JVMWrapper("JVM_MonitorNotifyAll"); | |
| 575 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 576 ObjectSynchronizer::notifyall(obj, CHECK); | |
| 577 JVM_END | |
| 578 | |
| 579 | |
| 580 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
| 581 JVMWrapper("JVM_Clone"); | |
| 582 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 583 const KlassHandle klass (THREAD, obj->klass()); | |
| 584 JvmtiVMObjectAllocEventCollector oam; | |
| 585 | |
| 586 #ifdef ASSERT | |
| 587 // Just checking that the cloneable flag is set correct | |
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588 if (obj->is_array()) { |
| 0 | 589 guarantee(klass->is_cloneable(), "all arrays are cloneable"); |
| 590 } else { | |
| 591 guarantee(obj->is_instance(), "should be instanceOop"); | |
| 1142 | 592 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
| 0 | 593 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
| 594 } | |
| 595 #endif | |
| 596 | |
| 597 // Check if class of obj supports the Cloneable interface. | |
| 598 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
| 599 if (!klass->is_cloneable()) { | |
| 600 ResourceMark rm(THREAD); | |
| 601 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
| 602 } | |
| 603 | |
| 604 // Make shallow object copy | |
| 605 const int size = obj->size(); | |
| 606 oop new_obj = NULL; | |
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607 if (obj->is_array()) { |
| 0 | 608 const int length = ((arrayOop)obj())->length(); |
| 609 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
| 610 } else { | |
| 611 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
| 612 } | |
| 613 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
| 614 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
| 615 // be suspended in the middle of copying the pointer and end up with parts | |
| 616 // of two different pointers in the field. Subsequent dereferences will crash. | |
| 617 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
| 618 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
| 619 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
| 620 // The same is true of StubRoutines::object_copy and the various oop_copy | |
| 621 // variants, and of the code generated by the inline_native_clone intrinsic. | |
| 622 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
| 623 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
| 624 (size_t)align_object_size(size) / HeapWordsPerLong); | |
| 625 // Clear the header | |
| 626 new_obj->init_mark(); | |
| 627 | |
| 628 // Store check (mark entire object and let gc sort it out) | |
| 629 BarrierSet* bs = Universe::heap()->barrier_set(); | |
| 630 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
| 631 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
| 632 | |
| 633 // Caution: this involves a java upcall, so the clone should be | |
| 634 // "gc-robust" by this stage. | |
| 635 if (klass->has_finalizer()) { | |
| 636 assert(obj->is_instance(), "should be instanceOop"); | |
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637 new_obj = InstanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); |
| 0 | 638 } |
| 639 | |
| 640 return JNIHandles::make_local(env, oop(new_obj)); | |
| 641 JVM_END | |
| 642 | |
| 643 // java.lang.Compiler //////////////////////////////////////////////////// | |
| 644 | |
| 645 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
| 646 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
| 647 // functions are all silently ignored unless JVM warnings are printed. | |
| 648 | |
| 649 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
| 650 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
| 651 JVM_END | |
| 652 | |
| 653 | |
| 654 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
| 655 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
| 656 return JNI_FALSE; | |
| 657 JVM_END | |
| 658 | |
| 659 | |
| 660 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
| 661 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
| 662 return JNI_FALSE; | |
| 663 JVM_END | |
| 664 | |
| 665 | |
| 666 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
| 667 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
| 668 return JNI_FALSE; | |
| 669 JVM_END | |
| 670 | |
| 671 | |
| 672 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
| 673 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
| 674 return NULL; | |
| 675 JVM_END | |
| 676 | |
| 677 | |
| 678 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
| 679 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
| 680 JVM_END | |
| 681 | |
| 682 | |
| 683 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
| 684 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
| 685 JVM_END | |
| 686 | |
| 687 | |
| 688 | |
| 689 // Error message support ////////////////////////////////////////////////////// | |
| 690 | |
| 691 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
| 692 JVMWrapper("JVM_GetLastErrorString"); | |
|
1980
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1972
diff
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|
693 return (jint)os::lasterror(buf, len); |
| 0 | 694 JVM_END |
| 695 | |
| 696 | |
| 697 // java.io.File /////////////////////////////////////////////////////////////// | |
| 698 | |
| 699 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
| 700 JVMWrapper2("JVM_NativePath (%s)", path); | |
|
1980
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1972
diff
changeset
|
701 return os::native_path(path); |
| 0 | 702 JVM_END |
| 703 | |
| 704 | |
| 705 // Misc. class handling /////////////////////////////////////////////////////////// | |
| 706 | |
| 707 | |
| 708 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
| 709 JVMWrapper("JVM_GetCallerClass"); | |
|
8866
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7198429: need checked categorization of caller-sensitive methods in the JDK
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|
710 |
|
12824
615d83933195
8026025: JVM_GetCallerClass allows Reflection.getCallerClass(int depth) to use
dholmes
parents:
12816
diff
changeset
|
711 // 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
|
712 // 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
|
713 // temporarily for existing code to use until a replacement API is defined. |
|
615d83933195
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dholmes
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12816
diff
changeset
|
714 if (SystemDictionary::reflect_CallerSensitive_klass() == NULL || depth != JVM_CALLER_DEPTH) { |
|
8866
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diff
changeset
|
715 Klass* k = thread->security_get_caller_class(depth); |
|
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diff
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|
716 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, k->java_mirror()); |
|
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|
717 } |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
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|
718 |
|
16885e702c88
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|
719 // Getting the class of the caller frame. |
|
16885e702c88
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|
720 // |
|
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|
721 // The call stack at this point looks something like this: |
|
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|
722 // |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
723 // [0] [ @CallerSensitive public sun.reflect.Reflection.getCallerClass ] |
|
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7198429: need checked categorization of caller-sensitive methods in the JDK
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|
724 // [1] [ @CallerSensitive API.method ] |
|
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|
725 // [.] [ (skipped intermediate frames) ] |
|
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|
726 // [n] [ caller ] |
|
16885e702c88
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diff
changeset
|
727 vframeStream vfst(thread); |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
728 // Cf. LibraryCallKit::inline_native_Reflection_getCallerClass |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
729 for (int n = 0; !vfst.at_end(); vfst.security_next(), n++) { |
|
16885e702c88
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diff
changeset
|
730 Method* m = vfst.method(); |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
731 assert(m != NULL, "sanity"); |
|
16885e702c88
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diff
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|
732 switch (n) { |
|
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changeset
|
733 case 0: |
|
16885e702c88
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diff
changeset
|
734 // This must only be called from Reflection.getCallerClass |
|
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7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
735 if (m->intrinsic_id() != vmIntrinsics::_getCallerClass) { |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
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diff
changeset
|
736 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
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parents:
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diff
changeset
|
737 } |
|
16885e702c88
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twisti
parents:
8031
diff
changeset
|
738 // fall-through |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
739 case 1: |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
740 // Frame 0 and 1 must be caller sensitive. |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
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8031
diff
changeset
|
741 if (!m->caller_sensitive()) { |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
742 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
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parents:
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diff
changeset
|
743 } |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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parents:
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diff
changeset
|
744 break; |
|
16885e702c88
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twisti
parents:
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diff
changeset
|
745 default: |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
746 if (!m->is_ignored_by_security_stack_walk()) { |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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parents:
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diff
changeset
|
747 // We have reached the desired frame; return the holder class. |
|
16885e702c88
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parents:
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diff
changeset
|
748 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:
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diff
changeset
|
749 } |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
750 break; |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
parents:
8031
diff
changeset
|
751 } |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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parents:
8031
diff
changeset
|
752 } |
|
16885e702c88
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diff
changeset
|
753 return NULL; |
| 0 | 754 JVM_END |
| 755 | |
| 756 | |
| 757 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
| 758 JVMWrapper("JVM_FindPrimitiveClass"); | |
| 759 oop mirror = NULL; | |
| 760 BasicType t = name2type(utf); | |
| 761 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
| 762 mirror = Universe::java_mirror(t); | |
| 763 } | |
| 764 if (mirror == NULL) { | |
| 765 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
| 766 } else { | |
| 767 return (jclass) JNIHandles::make_local(env, mirror); | |
| 768 } | |
| 769 JVM_END | |
| 770 | |
| 771 | |
| 772 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
| 773 JVMWrapper("JVM_ResolveClass"); | |
| 774 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
| 775 JVM_END | |
| 776 | |
|
878
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
777 |
|
20608
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
778 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
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parents:
20527
diff
changeset
|
779 JVMWrapper("JVM_KnownToNotExist"); |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
780 #if INCLUDE_CDS |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
781 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
|
782 #else |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
783 return false; |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
784 #endif |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
785 JVM_END |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
786 |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
787 |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
788 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
|
789 JVMWrapper("JVM_GetResourceLookupCacheURLs"); |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
790 #if INCLUDE_CDS |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
791 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
|
792 #else |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
793 return NULL; |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
794 #endif |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
795 JVM_END |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
796 |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
797 |
|
4cb90023bf2b
8061651: Interface to the Lookup Index Cache to improve URLClassPath search time
iklam
parents:
20527
diff
changeset
|
798 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
|
799 JVMWrapper("JVM_GetResourceLookupCache"); |
|
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::get_lookup_cache(env, loader, resource_name, CHECK_NULL); |
|
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 NULL; |
|
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 |
|
878
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
808 // 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
|
809 // if not found. ClassNotFoundException is not thrown. |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
810 // |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
811 // Rationale behind JVM_FindClassFromBootLoader |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
812 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
813 // b> because of (a) java.dll has a direct dependecy on the unexported |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
814 // private symbol "_JVM_FindClassFromClassLoader@20". |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
815 // c> the launcher cannot use the private symbol as it dynamically opens |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
816 // the entry point, so if something changes, the launcher will fail |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
817 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
818 // stable exported interface. |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
819 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
820 // signature to change from _JVM_FindClassFromClassLoader@20 to |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
821 // JVM_FindClassFromClassLoader and will not be backward compatible |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
822 // with older JDKs. |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
823 // Thus a public/stable exported entry point is the right solution, |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
824 // public here means public in linker semantics, and is exported only |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
825 // to the JDK, and is not intended to be a public API. |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
826 |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
827 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
828 const char* name)) |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
829 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
|
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 // Java libraries should ensure that name is never null... |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
832 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
|
878
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
833 // It's impossible to create this class; the name cannot fit |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
834 // into the constant pool. |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
835 return NULL; |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
836 } |
|
abe076e3636f
6864003: Modify JVM_FindClassFromBootLoader to return null if class not found
mchung
parents:
875
diff
changeset
|
837 |
|
2177
3582bf76420e
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838 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
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839 Klass* k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
|
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840 if (k == NULL) { |
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841 return NULL; |
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842 } |
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843 |
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844 if (TraceClassResolution) { |
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845 trace_class_resolution(k); |
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846 } |
| 6983 | 847 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
|
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848 JVM_END |
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849 |
| 18051 | 850 // Not used; JVM_FindClassFromCaller replaces this. |
|
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851 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
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852 jboolean init, jobject loader, |
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853 jboolean throwError)) |
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854 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
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855 throwError ? "error" : "exception"); |
| 388 | 856 // Java libraries should ensure that name is never null... |
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857 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
| 388 | 858 // It's impossible to create this class; the name cannot fit |
| 859 // into the constant pool. | |
| 860 if (throwError) { | |
| 861 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 862 } else { | |
| 863 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
| 864 } | |
| 865 } | |
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866 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
| 388 | 867 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
| 868 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 869 Handle(), throwError, THREAD); | |
| 870 | |
| 871 if (TraceClassResolution && result != NULL) { | |
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872 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
| 388 | 873 } |
| 874 return result; | |
| 0 | 875 JVM_END |
| 876 | |
| 18051 | 877 // Find a class with this name in this loader, using the caller's protection domain. |
| 878 JVM_ENTRY(jclass, JVM_FindClassFromCaller(JNIEnv* env, const char* name, | |
| 879 jboolean init, jobject loader, | |
| 880 jclass caller)) | |
| 881 JVMWrapper2("JVM_FindClassFromCaller %s throws ClassNotFoundException", name); | |
| 882 // Java libraries should ensure that name is never null... | |
| 883 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { | |
| 884 // It's impossible to create this class; the name cannot fit | |
| 885 // into the constant pool. | |
| 886 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
| 887 } | |
| 888 | |
| 889 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); | |
| 890 | |
| 891 oop loader_oop = JNIHandles::resolve(loader); | |
| 892 oop from_class = JNIHandles::resolve(caller); | |
| 893 oop protection_domain = NULL; | |
| 894 // If loader is null, shouldn't call ClassLoader.checkPackageAccess; otherwise get | |
| 895 // NPE. Put it in another way, the bootstrap class loader has all permission and | |
| 896 // thus no checkPackageAccess equivalence in the VM class loader. | |
| 897 // The caller is also passed as NULL by the java code if there is no security | |
| 898 // manager to avoid the performance cost of getting the calling class. | |
| 899 if (from_class != NULL && loader_oop != NULL) { | |
| 900 protection_domain = java_lang_Class::as_Klass(from_class)->protection_domain(); | |
| 901 } | |
| 902 | |
| 903 Handle h_loader(THREAD, loader_oop); | |
| 904 Handle h_prot(THREAD, protection_domain); | |
| 905 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 906 h_prot, false, THREAD); | |
| 907 | |
| 908 if (TraceClassResolution && result != NULL) { | |
| 909 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); | |
| 910 } | |
| 911 return result; | |
| 912 JVM_END | |
| 0 | 913 |
| 914 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
| 915 jboolean init, jclass from)) | |
| 916 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
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917 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
| 0 | 918 // It's impossible to create this class; the name cannot fit |
| 919 // into the constant pool. | |
| 920 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 921 } | |
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922 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
| 0 | 923 oop from_class_oop = JNIHandles::resolve(from); |
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924 Klass* from_class = (from_class_oop == NULL) |
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925 ? (Klass*)NULL |
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926 : java_lang_Class::as_Klass(from_class_oop); |
| 0 | 927 oop class_loader = NULL; |
| 928 oop protection_domain = NULL; | |
| 929 if (from_class != NULL) { | |
| 6983 | 930 class_loader = from_class->class_loader(); |
| 931 protection_domain = from_class->protection_domain(); | |
| 0 | 932 } |
| 933 Handle h_loader(THREAD, class_loader); | |
| 934 Handle h_prot (THREAD, protection_domain); | |
| 935 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 936 h_prot, true, thread); | |
| 937 | |
| 938 if (TraceClassResolution && result != NULL) { | |
| 939 // this function is generally only used for class loading during verification. | |
| 940 ResourceMark rm; | |
| 941 oop from_mirror = JNIHandles::resolve_non_null(from); | |
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942 Klass* from_class = java_lang_Class::as_Klass(from_mirror); |
| 6983 | 943 const char * from_name = from_class->external_name(); |
| 0 | 944 |
| 945 oop mirror = JNIHandles::resolve_non_null(result); | |
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946 Klass* to_class = java_lang_Class::as_Klass(mirror); |
| 6983 | 947 const char * to = to_class->external_name(); |
| 0 | 948 tty->print("RESOLVE %s %s (verification)\n", from_name, to); |
| 949 } | |
| 950 | |
| 951 return result; | |
| 952 JVM_END | |
| 953 | |
| 954 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
| 955 if (loader.is_null()) { | |
| 956 return; | |
| 957 } | |
| 958 | |
| 959 // check whether the current caller thread holds the lock or not. | |
| 960 // If not, increment the corresponding counter | |
| 961 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
| 962 ObjectSynchronizer::owner_self) { | |
| 963 counter->inc(); | |
| 964 } | |
| 965 } | |
| 966 | |
| 967 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
|
973
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968 // and JVM_DefineClassWithSourceCond() |
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969 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
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970 jobject loader, const jbyte *buf, |
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971 jsize len, jobject pd, const char *source, |
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972 jboolean verify, TRAPS) { |
|
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973 if (source == NULL) source = "__JVM_DefineClass__"; |
| 0 | 974 |
|
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975 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
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976 JavaThread* jt = (JavaThread*) THREAD; |
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977 |
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978 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
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979 ClassLoader::perf_define_appclass_selftime(), |
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980 ClassLoader::perf_define_appclasses(), |
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981 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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982 jt->get_thread_stat()->perf_timers_addr(), |
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983 PerfClassTraceTime::DEFINE_CLASS); |
|
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|
984 |
|
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985 if (UsePerfData) { |
|
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986 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
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|
987 } |
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988 |
| 0 | 989 // Since exceptions can be thrown, class initialization can take place |
| 990 // if name is NULL no check for class name in .class stream has to be made. | |
|
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991 TempNewSymbol class_name = NULL; |
| 0 | 992 if (name != NULL) { |
| 993 const int str_len = (int)strlen(name); | |
|
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994 if (str_len > Symbol::max_length()) { |
| 0 | 995 // It's impossible to create this class; the name cannot fit |
| 996 // into the constant pool. | |
| 997 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 998 } | |
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999 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
| 0 | 1000 } |
| 1001 | |
| 1002 ResourceMark rm(THREAD); | |
| 1003 ClassFileStream st((u1*) buf, len, (char *)source); | |
| 1004 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
| 1005 if (UsePerfData) { | |
| 1006 is_lock_held_by_thread(class_loader, | |
| 1007 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
| 1008 THREAD); | |
| 1009 } | |
| 1010 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
|
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1011 Klass* k = SystemDictionary::resolve_from_stream(class_name, class_loader, |
| 0 | 1012 protection_domain, &st, |
|
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1013 verify != 0, |
| 0 | 1014 CHECK_NULL); |
| 1015 | |
| 1016 if (TraceClassResolution && k != NULL) { | |
| 1017 trace_class_resolution(k); | |
| 1018 } | |
| 1019 | |
| 6983 | 1020 return (jclass) JNIHandles::make_local(env, k->java_mirror()); |
| 0 | 1021 } |
| 1022 | |
| 1023 | |
| 1024 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
| 1025 JVMWrapper2("JVM_DefineClass %s", name); | |
| 1026 | |
|
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1027 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
| 0 | 1028 JVM_END |
| 1029 | |
| 1030 | |
| 1031 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
| 1032 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
| 1033 | |
|
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1034 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
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1035 JVM_END |
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1036 |
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1037 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
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1038 jobject loader, const jbyte *buf, |
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1039 jsize len, jobject pd, |
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1040 const char *source, jboolean verify)) |
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1041 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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1042 |
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1043 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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1044 JVM_END |
| 0 | 1045 |
| 1046 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
| 1047 JVMWrapper("JVM_FindLoadedClass"); | |
| 1048 ResourceMark rm(THREAD); | |
| 1049 | |
| 1050 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 1051 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
| 1052 | |
| 1053 const char* str = java_lang_String::as_utf8_string(string()); | |
| 1054 // Sanity check, don't expect null | |
| 1055 if (str == NULL) return NULL; | |
| 1056 | |
| 1057 const int str_len = (int)strlen(str); | |
|
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1058 if (str_len > Symbol::max_length()) { |
| 0 | 1059 // It's impossible to create this class; the name cannot fit |
| 1060 // into the constant pool. | |
| 1061 return NULL; | |
| 1062 } | |
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1063 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
| 0 | 1064 |
| 1065 // Security Note: | |
| 1066 // The Java level wrapper will perform the necessary security check allowing | |
| 1067 // us to pass the NULL as the initiating class loader. | |
| 1068 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
| 1069 if (UsePerfData) { | |
| 1070 is_lock_held_by_thread(h_loader, | |
| 1071 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
| 1072 THREAD); | |
| 1073 } | |
| 1074 | |
|
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1075 Klass* k = SystemDictionary::find_instance_or_array_klass(klass_name, |
| 0 | 1076 h_loader, |
| 1077 Handle(), | |
| 1078 CHECK_NULL); | |
|
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1079 #if INCLUDE_CDS |
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1080 if (k == NULL) { |
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1081 // If the class is not already loaded, try to see if it's in the shared |
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1082 // archive for the current classloader (h_loader). |
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1083 instanceKlassHandle ik = SystemDictionaryShared::find_or_load_shared_class( |
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1084 klass_name, h_loader, CHECK_NULL); |
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1085 k = ik(); |
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1086 } |
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1087 #endif |
| 0 | 1088 return (k == NULL) ? NULL : |
| 6983 | 1089 (jclass) JNIHandles::make_local(env, k->java_mirror()); |
| 0 | 1090 JVM_END |
| 1091 | |
| 1092 | |
| 1093 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
| 1094 | |
| 1095 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
| 1096 assert (cls != NULL, "illegal class"); | |
| 1097 JVMWrapper("JVM_GetClassName"); | |
| 1098 JvmtiVMObjectAllocEventCollector oam; | |
| 1099 ResourceMark rm(THREAD); | |
| 1100 const char* name; | |
| 1101 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1102 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
| 1103 } else { | |
| 1104 // Consider caching interned string in Klass | |
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1105 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 0 | 1106 assert(k->is_klass(), "just checking"); |
| 6983 | 1107 name = k->external_name(); |
| 0 | 1108 } |
| 1109 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
| 1110 return (jstring) JNIHandles::make_local(env, result); | |
| 1111 JVM_END | |
| 1112 | |
| 1113 | |
| 1114 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
| 1115 JVMWrapper("JVM_GetClassInterfaces"); | |
| 1116 JvmtiVMObjectAllocEventCollector oam; | |
| 1117 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1118 | |
| 1119 // Special handling for primitive objects | |
| 1120 if (java_lang_Class::is_primitive(mirror)) { | |
| 1121 // Primitive objects does not have any interfaces | |
| 1142 | 1122 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1123 return (jobjectArray) JNIHandles::make_local(env, r); |
| 1124 } | |
| 1125 | |
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1126 KlassHandle klass(thread, java_lang_Class::as_Klass(mirror)); |
| 0 | 1127 // Figure size of result array |
| 1128 int size; | |
| 1129 if (klass->oop_is_instance()) { | |
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1130 size = InstanceKlass::cast(klass())->local_interfaces()->length(); |
| 0 | 1131 } else { |
| 1132 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
| 1133 size = 2; | |
| 1134 } | |
| 1135 | |
| 1136 // Allocate result array | |
| 1142 | 1137 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
| 0 | 1138 objArrayHandle result (THREAD, r); |
| 1139 // Fill in result | |
| 1140 if (klass->oop_is_instance()) { | |
| 1141 // Regular instance klass, fill in all local interfaces | |
| 1142 for (int index = 0; index < size; index++) { | |
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1143 Klass* k = InstanceKlass::cast(klass())->local_interfaces()->at(index); |
| 6983 | 1144 result->obj_at_put(index, k->java_mirror()); |
| 0 | 1145 } |
| 1146 } else { | |
| 1147 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
| 6983 | 1148 result->obj_at_put(0, SystemDictionary::Cloneable_klass()->java_mirror()); |
| 1149 result->obj_at_put(1, SystemDictionary::Serializable_klass()->java_mirror()); | |
| 0 | 1150 } |
| 1151 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1152 JVM_END | |
| 1153 | |
| 1154 | |
| 1155 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
| 1156 JVMWrapper("JVM_GetClassLoader"); | |
| 1157 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1158 return NULL; | |
| 1159 } | |
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1160 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1161 oop loader = k->class_loader(); |
| 0 | 1162 return JNIHandles::make_local(env, loader); |
| 1163 JVM_END | |
| 1164 | |
| 1165 | |
| 1166 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
| 1167 JVMWrapper("JVM_IsInterface"); | |
| 1168 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1169 if (java_lang_Class::is_primitive(mirror)) { | |
| 1170 return JNI_FALSE; | |
| 1171 } | |
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1172 Klass* k = java_lang_Class::as_Klass(mirror); |
| 6983 | 1173 jboolean result = k->is_interface(); |
| 1174 assert(!result || k->oop_is_instance(), | |
| 0 | 1175 "all interfaces are instance types"); |
| 1176 // The compiler intrinsic for isInterface tests the | |
| 1177 // Klass::_access_flags bits in the same way. | |
| 1178 return result; | |
| 1179 JVM_END | |
| 1180 | |
| 1181 | |
| 1182 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
| 1183 JVMWrapper("JVM_GetClassSigners"); | |
| 1184 JvmtiVMObjectAllocEventCollector oam; | |
| 1185 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1186 // There are no signers for primitive types | |
| 1187 return NULL; | |
| 1188 } | |
| 1189 | |
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1190 objArrayOop signers = java_lang_Class::signers(JNIHandles::resolve_non_null(cls)); |
| 0 | 1191 |
| 1192 // If there are no signers set in the class, or if the class | |
| 1193 // is an array, return NULL. | |
| 1194 if (signers == NULL) return NULL; | |
| 1195 | |
| 1196 // copy of the signers array | |
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1197 Klass* element = ObjArrayKlass::cast(signers->klass())->element_klass(); |
| 0 | 1198 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); |
| 1199 for (int index = 0; index < signers->length(); index++) { | |
| 1200 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
| 1201 } | |
| 1202 | |
| 1203 // return the copy | |
| 1204 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
| 1205 JVM_END | |
| 1206 | |
| 1207 | |
| 1208 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
| 1209 JVMWrapper("JVM_SetClassSigners"); | |
| 1210 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1211 // This call is ignored for primitive types and arrays. | |
| 1212 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
| 1213 // be called with an array. Only the bootstrap loader creates arrays. | |
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1214 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1215 if (k->oop_is_instance()) { |
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1216 java_lang_Class::set_signers(k->java_mirror(), objArrayOop(JNIHandles::resolve(signers))); |
| 0 | 1217 } |
| 1218 } | |
| 1219 JVM_END | |
| 1220 | |
| 1221 | |
| 1222 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
| 1223 JVMWrapper("JVM_GetProtectionDomain"); | |
| 1224 if (JNIHandles::resolve(cls) == NULL) { | |
| 1225 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
| 1226 } | |
| 1227 | |
| 1228 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1229 // Primitive types does not have a protection domain. | |
| 1230 return NULL; | |
| 1231 } | |
| 1232 | |
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1233 oop pd = java_lang_Class::protection_domain(JNIHandles::resolve(cls)); |
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1234 return (jobject) JNIHandles::make_local(env, pd); |
| 0 | 1235 JVM_END |
| 1236 | |
| 1237 | |
| 11010 | 1238 static bool is_authorized(Handle context, instanceKlassHandle klass, TRAPS) { |
| 1239 // If there is a security manager and protection domain, check the access | |
| 1240 // in the protection domain, otherwise it is authorized. | |
| 1241 if (java_lang_System::has_security_manager()) { | |
| 1242 | |
| 1243 // For bootstrapping, if pd implies method isn't in the JDK, allow | |
| 1244 // this context to revert to older behavior. | |
| 1245 // In this case the isAuthorized field in AccessControlContext is also not | |
| 1246 // present. | |
| 1247 if (Universe::protection_domain_implies_method() == NULL) { | |
| 1248 return true; | |
| 1249 } | |
| 1250 | |
| 1251 // Whitelist certain access control contexts | |
| 1252 if (java_security_AccessControlContext::is_authorized(context)) { | |
| 1253 return true; | |
| 1254 } | |
| 1255 | |
| 1256 oop prot = klass->protection_domain(); | |
| 1257 if (prot != NULL) { | |
| 1258 // Call pd.implies(new SecurityPermission("createAccessControlContext")) | |
| 1259 // in the new wrapper. | |
| 1260 methodHandle m(THREAD, Universe::protection_domain_implies_method()); | |
| 1261 Handle h_prot(THREAD, prot); | |
| 1262 JavaValue result(T_BOOLEAN); | |
| 1263 JavaCallArguments args(h_prot); | |
| 1264 JavaCalls::call(&result, m, &args, CHECK_false); | |
| 1265 return (result.get_jboolean() != 0); | |
| 1266 } | |
| 1267 } | |
| 1268 return true; | |
| 1269 } | |
| 1270 | |
| 1271 // Create an AccessControlContext with a protection domain with null codesource | |
| 1272 // and null permissions - which gives no permissions. | |
| 1273 oop create_dummy_access_control_context(TRAPS) { | |
| 1274 InstanceKlass* pd_klass = InstanceKlass::cast(SystemDictionary::ProtectionDomain_klass()); | |
| 1275 // new ProtectionDomain(null,null); | |
| 1276 oop null_protection_domain = pd_klass->allocate_instance(CHECK_NULL); | |
| 1277 Handle null_pd(THREAD, null_protection_domain); | |
| 1278 | |
| 1279 // new ProtectionDomain[] {pd}; | |
| 1280 objArrayOop context = oopFactory::new_objArray(pd_klass, 1, CHECK_NULL); | |
| 1281 context->obj_at_put(0, null_pd()); | |
| 1282 | |
| 1283 // new AccessControlContext(new ProtectionDomain[] {pd}) | |
| 1284 objArrayHandle h_context(THREAD, context); | |
| 1285 oop result = java_security_AccessControlContext::create(h_context, false, Handle(), CHECK_NULL); | |
| 1286 return result; | |
| 1287 } | |
| 0 | 1288 |
| 1289 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
| 1290 JVMWrapper("JVM_DoPrivileged"); | |
| 1291 | |
| 1292 if (action == NULL) { | |
| 1293 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
| 1294 } | |
| 1295 | |
| 11010 | 1296 // Compute the frame initiating the do privileged operation and setup the privileged stack |
| 1297 vframeStream vfst(thread); | |
| 1298 vfst.security_get_caller_frame(1); | |
| 1299 | |
| 1300 if (vfst.at_end()) { | |
| 1301 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "no caller?"); | |
| 1302 } | |
| 1303 | |
| 1304 Method* method = vfst.method(); | |
| 1305 instanceKlassHandle klass (THREAD, method->method_holder()); | |
| 1306 | |
| 1307 // Check that action object understands "Object run()" | |
| 1308 Handle h_context; | |
| 1309 if (context != NULL) { | |
| 1310 h_context = Handle(THREAD, JNIHandles::resolve(context)); | |
| 1311 bool authorized = is_authorized(h_context, klass, CHECK_NULL); | |
| 1312 if (!authorized) { | |
| 1313 // Create an unprivileged access control object and call it's run function | |
| 1314 // instead. | |
| 1315 oop noprivs = create_dummy_access_control_context(CHECK_NULL); | |
| 1316 h_context = Handle(THREAD, noprivs); | |
| 1317 } | |
| 1318 } | |
| 0 | 1319 |
| 1320 // Check that action object understands "Object run()" | |
| 1321 Handle object (THREAD, JNIHandles::resolve(action)); | |
| 1322 | |
| 1323 // get run() method | |
| 6983 | 1324 Method* m_oop = object->klass()->uncached_lookup_method( |
| 0 | 1325 vmSymbols::run_method_name(), |
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1327 Klass::normal); |
| 0 | 1328 methodHandle m (THREAD, m_oop); |
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1329 if (m.is_null() || !m->is_method() || !m()->is_public() || m()->is_static()) { |
| 0 | 1330 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); |
| 1331 } | |
| 1332 | |
| 11010 | 1333 // Stack allocated list of privileged stack elements |
| 1334 PrivilegedElement pi; | |
| 0 | 1335 if (!vfst.at_end()) { |
| 11010 | 1336 pi.initialize(&vfst, h_context(), thread->privileged_stack_top(), CHECK_NULL); |
| 0 | 1337 thread->set_privileged_stack_top(&pi); |
| 1338 } | |
| 1339 | |
| 1340 | |
| 1341 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
| 1342 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
| 1343 Handle pending_exception; | |
| 1344 JavaValue result(T_OBJECT); | |
| 1345 JavaCallArguments args(object); | |
| 1346 JavaCalls::call(&result, m, &args, THREAD); | |
| 1347 | |
| 1348 // done with action, remove ourselves from the list | |
| 1349 if (!vfst.at_end()) { | |
| 1350 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
| 1351 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
| 1352 } | |
| 1353 | |
| 1354 if (HAS_PENDING_EXCEPTION) { | |
| 1355 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
| 1356 CLEAR_PENDING_EXCEPTION; | |
| 1357 | |
| 1142 | 1358 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
| 1359 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
| 0 | 1360 // Throw a java.security.PrivilegedActionException(Exception e) exception |
| 1361 JavaCallArguments args(pending_exception); | |
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1362 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1363 vmSymbols::exception_void_signature(), |
| 0 | 1364 &args); |
| 1365 } | |
| 1366 } | |
| 1367 | |
| 1368 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
| 1369 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
| 1370 JVM_END | |
| 1371 | |
| 1372 | |
| 1373 // Returns the inherited_access_control_context field of the running thread. | |
| 1374 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1375 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
| 1376 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
| 1377 return JNIHandles::make_local(env, result); | |
| 1378 JVM_END | |
| 1379 | |
| 1380 class RegisterArrayForGC { | |
| 1381 private: | |
| 1382 JavaThread *_thread; | |
| 1383 public: | |
| 1384 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
| 1385 _thread = thread; | |
| 1386 _thread->register_array_for_gc(array); | |
| 1387 } | |
| 1388 | |
| 1389 ~RegisterArrayForGC() { | |
| 1390 _thread->register_array_for_gc(NULL); | |
| 1391 } | |
| 1392 }; | |
| 1393 | |
| 1394 | |
| 1395 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1396 JVMWrapper("JVM_GetStackAccessControlContext"); | |
| 1397 if (!UsePrivilegedStack) return NULL; | |
| 1398 | |
| 1399 ResourceMark rm(THREAD); | |
| 1400 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
| 1401 JvmtiVMObjectAllocEventCollector oam; | |
| 1402 | |
| 1403 // count the protection domains on the execution stack. We collapse | |
| 1404 // duplicate consecutive protection domains into a single one, as | |
| 1405 // well as stopping when we hit a privileged frame. | |
| 1406 | |
| 1407 // Use vframeStream to iterate through Java frames | |
| 1408 vframeStream vfst(thread); | |
| 1409 | |
| 1410 oop previous_protection_domain = NULL; | |
| 1411 Handle privileged_context(thread, NULL); | |
| 1412 bool is_privileged = false; | |
| 1413 oop protection_domain = NULL; | |
| 1414 | |
| 1415 for(; !vfst.at_end(); vfst.next()) { | |
| 1416 // get method of frame | |
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1417 Method* method = vfst.method(); |
| 0 | 1418 intptr_t* frame_id = vfst.frame_id(); |
| 1419 | |
| 1420 // check the privileged frames to see if we have a match | |
| 1421 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
| 1422 // this frame is privileged | |
| 1423 is_privileged = true; | |
| 1424 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
| 1425 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
| 1426 } else { | |
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1427 protection_domain = method->method_holder()->protection_domain(); |
| 0 | 1428 } |
| 1429 | |
| 1430 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
| 1431 local_array->push(protection_domain); | |
| 1432 previous_protection_domain = protection_domain; | |
| 1433 } | |
| 1434 | |
| 1435 if (is_privileged) break; | |
| 1436 } | |
| 1437 | |
| 1438 | |
| 1439 // either all the domains on the stack were system domains, or | |
| 1440 // we had a privileged system domain | |
| 1441 if (local_array->is_empty()) { | |
| 1442 if (is_privileged && privileged_context.is_null()) return NULL; | |
| 1443 | |
| 1444 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
| 1445 return JNIHandles::make_local(env, result); | |
| 1446 } | |
| 1447 | |
| 1448 // the resource area must be registered in case of a gc | |
| 1449 RegisterArrayForGC ragc(thread, local_array); | |
| 1142 | 1450 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
| 0 | 1451 local_array->length(), CHECK_NULL); |
| 1452 objArrayHandle h_context(thread, context); | |
| 1453 for (int index = 0; index < local_array->length(); index++) { | |
| 1454 h_context->obj_at_put(index, local_array->at(index)); | |
| 1455 } | |
| 1456 | |
| 1457 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
| 1458 | |
| 1459 return JNIHandles::make_local(env, result); | |
| 1460 JVM_END | |
| 1461 | |
| 1462 | |
| 1463 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
| 1464 JVMWrapper("JVM_IsArrayClass"); | |
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1465 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 1466 return (k != NULL) && k->oop_is_array() ? true : false; |
| 0 | 1467 JVM_END |
| 1468 | |
| 1469 | |
| 1470 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
| 1471 JVMWrapper("JVM_IsPrimitiveClass"); | |
| 1472 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1473 return (jboolean) java_lang_Class::is_primitive(mirror); | |
| 1474 JVM_END | |
| 1475 | |
| 1476 | |
| 1477 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
| 1478 JVMWrapper("JVM_GetComponentType"); | |
| 1479 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1480 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
| 1481 return (jclass) JNIHandles::make_local(env, result); | |
| 1482 JVM_END | |
| 1483 | |
| 1484 | |
| 1485 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
| 1486 JVMWrapper("JVM_GetClassModifiers"); | |
| 1487 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1488 // Primitive type | |
| 1489 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 1490 } | |
| 1491 | |
| 6983 | 1492 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 1493 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); |
| 1494 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
| 1495 return k->modifier_flags(); | |
| 1496 JVM_END | |
| 1497 | |
| 1498 | |
| 1499 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
| 1500 | |
| 1501 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
| 1502 JvmtiVMObjectAllocEventCollector oam; | |
| 1503 // ofClass is a reference to a java_lang_Class object. The mirror object | |
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1504 // of an InstanceKlass |
| 0 | 1505 |
| 1506 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1507 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
| 1142 | 1508 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1509 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1510 } | |
| 1511 | |
|
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1512 instanceKlassHandle k(thread, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
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1513 InnerClassesIterator iter(k); |
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1514 |
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1515 if (iter.length() == 0) { |
| 0 | 1516 // Neither an inner nor outer class |
| 1142 | 1517 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1518 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1519 } | |
| 1520 | |
| 1521 // find inner class info | |
| 1522 constantPoolHandle cp(thread, k->constants()); | |
|
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1523 int length = iter.length(); |
| 0 | 1524 |
| 1525 // Allocate temp. result array | |
| 1142 | 1526 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
| 0 | 1527 objArrayHandle result (THREAD, r); |
| 1528 int members = 0; | |
| 1529 | |
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1530 for (; !iter.done(); iter.next()) { |
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1531 int ioff = iter.inner_class_info_index(); |
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1532 int ooff = iter.outer_class_info_index(); |
| 0 | 1533 |
| 1534 if (ioff != 0 && ooff != 0) { | |
| 1535 // Check to see if the name matches the class we're looking for | |
| 1536 // before attempting to find the class. | |
| 1537 if (cp->klass_name_at_matches(k, ooff)) { | |
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1538 Klass* outer_klass = cp->klass_at(ooff, CHECK_NULL); |
| 0 | 1539 if (outer_klass == k()) { |
|
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1540 Klass* ik = cp->klass_at(ioff, CHECK_NULL); |
| 0 | 1541 instanceKlassHandle inner_klass (THREAD, ik); |
| 1542 | |
| 1543 // Throws an exception if outer klass has not declared k as | |
| 1544 // an inner klass | |
|
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1545 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
| 0 | 1546 |
| 1547 result->obj_at_put(members, inner_klass->java_mirror()); | |
| 1548 members++; | |
| 1549 } | |
| 1550 } | |
| 1551 } | |
| 1552 } | |
| 1553 | |
| 1554 if (members != length) { | |
| 1555 // Return array of right length | |
| 1142 | 1556 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
| 0 | 1557 for(int i = 0; i < members; i++) { |
| 1558 res->obj_at_put(i, result->obj_at(i)); | |
| 1559 } | |
| 1560 return (jobjectArray)JNIHandles::make_local(env, res); | |
| 1561 } | |
| 1562 | |
| 1563 return (jobjectArray)JNIHandles::make_local(env, result()); | |
| 1564 JVM_END | |
| 1565 | |
| 1566 | |
| 1567 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
|
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1568 { |
| 0 | 1569 // ofClass is a reference to a java_lang_Class object. |
| 1570 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1571 ! java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_instance()) { |
| 0 | 1572 return NULL; |
| 1573 } | |
| 1574 | |
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1575 bool inner_is_member = false; |
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1576 Klass* outer_klass |
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1577 = InstanceKlass::cast(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)) |
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1578 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
|
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1579 if (outer_klass == NULL) return NULL; // already a top-level class |
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1580 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
| 6983 | 1581 return (jclass) JNIHandles::make_local(env, outer_klass->java_mirror()); |
|
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1582 } |
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1583 JVM_END |
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1584 |
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1585 // should be in InstanceKlass.cpp, but is here for historical reasons |
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1586 Klass* InstanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
|
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1587 bool* inner_is_member, |
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1588 TRAPS) { |
|
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1589 Thread* thread = THREAD; |
|
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1590 InnerClassesIterator iter(k); |
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1591 if (iter.length() == 0) { |
| 0 | 1592 // No inner class info => no declaring class |
| 1593 return NULL; | |
| 1594 } | |
| 1595 | |
| 1596 constantPoolHandle i_cp(thread, k->constants()); | |
| 1597 | |
| 1598 bool found = false; | |
|
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1599 Klass* ok; |
| 0 | 1600 instanceKlassHandle outer_klass; |
|
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1601 *inner_is_member = false; |
| 0 | 1602 |
| 1603 // Find inner_klass attribute | |
|
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1604 for (; !iter.done() && !found; iter.next()) { |
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1605 int ioff = iter.inner_class_info_index(); |
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1606 int ooff = iter.outer_class_info_index(); |
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1607 int noff = iter.inner_name_index(); |
|
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1608 if (ioff != 0) { |
| 0 | 1609 // Check to see if the name matches the class we're looking for |
| 1610 // before attempting to find the class. | |
| 1611 if (i_cp->klass_name_at_matches(k, ioff)) { | |
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1612 Klass* inner_klass = i_cp->klass_at(ioff, CHECK_NULL); |
|
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1613 found = (k() == inner_klass); |
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1614 if (found && ooff != 0) { |
| 0 | 1615 ok = i_cp->klass_at(ooff, CHECK_NULL); |
| 1616 outer_klass = instanceKlassHandle(thread, ok); | |
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1617 *inner_is_member = true; |
| 0 | 1618 } |
| 1619 } | |
| 1620 } | |
| 1621 } | |
| 1622 | |
|
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1623 if (found && outer_klass.is_null()) { |
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1624 // It may be anonymous; try for that. |
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1625 int encl_method_class_idx = k->enclosing_method_class_index(); |
|
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1626 if (encl_method_class_idx != 0) { |
|
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1627 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
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|
1628 outer_klass = instanceKlassHandle(thread, ok); |
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1629 *inner_is_member = false; |
|
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|
1630 } |
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1631 } |
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1632 |
| 0 | 1633 // If no inner class attribute found for this class. |
|
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1634 if (outer_klass.is_null()) return NULL; |
| 0 | 1635 |
| 1636 // Throws an exception if outer klass has not declared k as an inner klass | |
|
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1637 // We need evidence that each klass knows about the other, or else |
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1638 // the system could allow a spoof of an inner class to gain access rights. |
|
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1639 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
|
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1640 return outer_klass(); |
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1641 } |
| 0 | 1642 |
| 1643 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
| 1644 assert (cls != NULL, "illegal class"); | |
| 1645 JVMWrapper("JVM_GetClassSignature"); | |
| 1646 JvmtiVMObjectAllocEventCollector oam; | |
| 1647 ResourceMark rm(THREAD); | |
| 1648 // Return null for arrays and primatives | |
| 1649 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
|
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1650 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 6983 | 1651 if (k->oop_is_instance()) { |
|
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1652 Symbol* sym = InstanceKlass::cast(k)->generic_signature(); |
|
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|
1653 if (sym == NULL) return NULL; |
| 0 | 1654 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 1655 return (jstring) JNIHandles::make_local(env, str()); | |
| 1656 } | |
| 1657 } | |
| 1658 return NULL; | |
| 1659 JVM_END | |
| 1660 | |
| 1661 | |
| 1662 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
| 1663 assert (cls != NULL, "illegal class"); | |
| 1664 JVMWrapper("JVM_GetClassAnnotations"); | |
|
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1665 |
| 0 | 1666 // Return null for arrays and primitives |
| 1667 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
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1668 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
| 6983 | 1669 if (k->oop_is_instance()) { |
|
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1670 typeArrayOop a = Annotations::make_java_array(InstanceKlass::cast(k)->class_annotations(), CHECK_NULL); |
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1671 return (jbyteArray) JNIHandles::make_local(env, a); |
| 0 | 1672 } |
| 1673 } | |
| 1674 return NULL; | |
| 1675 JVM_END | |
| 1676 | |
| 1677 | |
|
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1678 static bool jvm_get_field_common(jobject field, fieldDescriptor& fd, TRAPS) { |
| 0 | 1679 // some of this code was adapted from from jni_FromReflectedField |
| 1680 | |
| 1681 oop reflected = JNIHandles::resolve_non_null(field); | |
| 1682 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
|
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1683 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 1684 int slot = java_lang_reflect_Field::slot(reflected); |
| 1685 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
| 1686 | |
| 1687 KlassHandle kh(THREAD, k); | |
|
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1688 intptr_t offset = InstanceKlass::cast(kh())->field_offset(slot); |
| 0 | 1689 |
| 1690 if (modifiers & JVM_ACC_STATIC) { | |
| 1691 // for static fields we only look in the current class | |
|
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1692 if (!InstanceKlass::cast(kh())->find_local_field_from_offset(offset, true, &fd)) { |
| 0 | 1693 assert(false, "cannot find static field"); |
|
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|
1694 return false; |
| 0 | 1695 } |
| 1696 } else { | |
| 1697 // for instance fields we start with the current class and work | |
| 1698 // our way up through the superclass chain | |
|
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1699 if (!InstanceKlass::cast(kh())->find_field_from_offset(offset, false, &fd)) { |
| 0 | 1700 assert(false, "cannot find instance field"); |
|
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|
1701 return false; |
| 0 | 1702 } |
| 1703 } | |
|
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|
1704 return true; |
|
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|
1705 } |
|
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|
1706 |
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1707 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) |
|
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1708 // field is a handle to a java.lang.reflect.Field object |
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1709 assert(field != NULL, "illegal field"); |
|
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1710 JVMWrapper("JVM_GetFieldAnnotations"); |
|
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1711 |
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1712 fieldDescriptor fd; |
|
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1713 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
|
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1714 if (!gotFd) { |
|
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|
1715 return NULL; |
|
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|
1716 } |
| 0 | 1717 |
|
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1718 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.annotations(), THREAD)); |
| 0 | 1719 JVM_END |
| 1720 | |
| 1721 | |
|
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1722 static Method* jvm_get_method_common(jobject method) { |
| 0 | 1723 // some of this code was adapted from from jni_FromReflectedMethod |
| 1724 | |
| 1725 oop reflected = JNIHandles::resolve_non_null(method); | |
| 1726 oop mirror = NULL; | |
| 1727 int slot = 0; | |
| 1728 | |
| 1142 | 1729 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
| 0 | 1730 mirror = java_lang_reflect_Constructor::clazz(reflected); |
| 1731 slot = java_lang_reflect_Constructor::slot(reflected); | |
| 1732 } else { | |
| 1142 | 1733 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
| 0 | 1734 "wrong type"); |
| 1735 mirror = java_lang_reflect_Method::clazz(reflected); | |
| 1736 slot = java_lang_reflect_Method::slot(reflected); | |
| 1737 } | |
|
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1738 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 1739 |
|
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1740 Method* m = InstanceKlass::cast(k)->method_with_idnum(slot); |
|
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1741 assert(m != NULL, "cannot find method"); |
|
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1742 return m; // caller has to deal with NULL in product mode |
| 0 | 1743 } |
| 1744 | |
| 1745 | |
| 1746 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
| 1747 JVMWrapper("JVM_GetMethodAnnotations"); | |
| 1748 | |
| 1749 // method is a handle to a java.lang.reflect.Method object | |
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1750 Method* m = jvm_get_method_common(method); |
|
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1751 if (m == NULL) { |
|
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1752 return NULL; |
|
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|
1753 } |
|
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1754 |
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1755 return (jbyteArray) JNIHandles::make_local(env, |
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1756 Annotations::make_java_array(m->annotations(), THREAD)); |
| 0 | 1757 JVM_END |
| 1758 | |
| 1759 | |
| 1760 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
| 1761 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
| 1762 | |
| 1763 // method is a handle to a java.lang.reflect.Method object | |
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1764 Method* m = jvm_get_method_common(method); |
|
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1765 if (m == NULL) { |
|
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1766 return NULL; |
|
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|
1767 } |
|
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|
1768 |
|
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1769 return (jbyteArray) JNIHandles::make_local(env, |
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1770 Annotations::make_java_array(m->annotation_default(), THREAD)); |
| 0 | 1771 JVM_END |
| 1772 | |
| 1773 | |
| 1774 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
| 1775 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
| 1776 | |
| 1777 // method is a handle to a java.lang.reflect.Method object | |
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1778 Method* m = jvm_get_method_common(method); |
|
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1779 if (m == NULL) { |
|
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|
1780 return NULL; |
|
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|
1781 } |
|
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|
1782 |
|
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1783 return (jbyteArray) JNIHandles::make_local(env, |
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1784 Annotations::make_java_array(m->parameter_annotations(), THREAD)); |
| 0 | 1785 JVM_END |
| 1786 | |
|
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1787 /* Type use annotations support (JDK 1.8) */ |
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1788 |
|
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1789 JVM_ENTRY(jbyteArray, JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls)) |
|
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1790 assert (cls != NULL, "illegal class"); |
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1791 JVMWrapper("JVM_GetClassTypeAnnotations"); |
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1792 ResourceMark rm(THREAD); |
|
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1793 // Return null for arrays and primitives |
|
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1794 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { |
|
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1795 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve(cls)); |
|
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1796 if (k->oop_is_instance()) { |
| 8031 | 1797 AnnotationArray* type_annotations = InstanceKlass::cast(k)->class_type_annotations(); |
|
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1798 if (type_annotations != NULL) { |
| 8031 | 1799 typeArrayOop a = Annotations::make_java_array(type_annotations, CHECK_NULL); |
|
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1800 return (jbyteArray) JNIHandles::make_local(env, a); |
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1801 } |
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1802 } |
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1803 } |
|
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1804 return NULL; |
|
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1805 JVM_END |
|
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1806 |
|
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1807 JVM_ENTRY(jbyteArray, JVM_GetMethodTypeAnnotations(JNIEnv *env, jobject method)) |
|
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1808 assert (method != NULL, "illegal method"); |
|
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1809 JVMWrapper("JVM_GetMethodTypeAnnotations"); |
|
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1810 |
|
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1811 // method is a handle to a java.lang.reflect.Method object |
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1812 Method* m = jvm_get_method_common(method); |
|
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1813 if (m == NULL) { |
|
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1814 return NULL; |
|
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|
1815 } |
|
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|
1816 |
|
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1817 AnnotationArray* type_annotations = m->type_annotations(); |
|
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1818 if (type_annotations != NULL) { |
|
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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 return NULL; |
|
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|
1824 JVM_END |
|
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|
1825 |
|
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1826 JVM_ENTRY(jbyteArray, JVM_GetFieldTypeAnnotations(JNIEnv *env, jobject field)) |
|
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1827 assert (field != NULL, "illegal field"); |
|
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|
1828 JVMWrapper("JVM_GetFieldTypeAnnotations"); |
|
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|
1829 |
|
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|
1830 fieldDescriptor fd; |
|
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|
1831 bool gotFd = jvm_get_field_common(field, fd, CHECK_NULL); |
|
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|
1832 if (!gotFd) { |
|
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|
1833 return NULL; |
|
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|
1834 } |
|
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|
1835 |
|
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1836 return (jbyteArray) JNIHandles::make_local(env, Annotations::make_java_array(fd.type_annotations(), THREAD)); |
|
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|
1837 JVM_END |
|
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|
1838 |
|
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1839 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { |
|
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1840 if (!cp->is_within_bounds(index)) { |
|
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1841 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); |
|
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1842 } |
|
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1843 } |
|
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1844 |
|
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1845 JVM_ENTRY(jobjectArray, JVM_GetMethodParameters(JNIEnv *env, jobject method)) |
|
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|
1846 { |
|
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|
1847 JVMWrapper("JVM_GetMethodParameters"); |
|
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|
1848 // method is a handle to a java.lang.reflect.Method object |
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1849 Method* method_ptr = jvm_get_method_common(method); |
|
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1850 methodHandle mh (THREAD, method_ptr); |
|
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|
1851 Handle reflected_method (THREAD, JNIHandles::resolve_non_null(method)); |
|
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|
1852 const int num_params = mh->method_parameters_length(); |
|
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1853 |
|
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|
1854 if (0 != num_params) { |
|
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1855 // make sure all the symbols are properly formatted |
|
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|
1856 for (int i = 0; i < num_params; i++) { |
|
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|
1857 MethodParametersElement* params = mh->method_parameters_start(); |
|
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|
1858 int index = params[i].name_cp_index; |
|
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|
1859 bounds_check(mh->constants(), index, CHECK_NULL); |
|
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1860 |
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1861 if (0 != index && !mh->constants()->tag_at(index).is_utf8()) { |
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1862 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), |
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1863 "Wrong type at constant pool index"); |
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1864 } |
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1865 |
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1866 } |
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1867 |
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1868 objArrayOop result_oop = oopFactory::new_objArray(SystemDictionary::reflect_Parameter_klass(), num_params, CHECK_NULL); |
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1869 objArrayHandle result (THREAD, result_oop); |
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1870 |
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1871 for (int i = 0; i < num_params; i++) { |
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1872 MethodParametersElement* params = mh->method_parameters_start(); |
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1873 // For a 0 index, give a NULL symbol |
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1874 Symbol* sym = 0 != params[i].name_cp_index ? |
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1875 mh->constants()->symbol_at(params[i].name_cp_index) : NULL; |
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1876 int flags = params[i].flags; |
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1877 oop param = Reflection::new_parameter(reflected_method, i, sym, |
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1878 flags, CHECK_NULL); |
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1879 result->obj_at_put(i, param); |
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1880 } |
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1881 return (jobjectArray)JNIHandles::make_local(env, result()); |
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1882 } else { |
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1883 return (jobjectArray)NULL; |
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1884 } |
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1885 } |
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1886 JVM_END |
| 0 | 1887 |
| 1888 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
| 1889 | |
| 1890 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1891 { | |
| 1892 JVMWrapper("JVM_GetClassDeclaredFields"); | |
| 1893 JvmtiVMObjectAllocEventCollector oam; | |
| 1894 | |
| 1895 // Exclude primitive types and array types | |
| 1896 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 6983 | 1897 java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
| 0 | 1898 // Return empty array |
| 1142 | 1899 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
| 0 | 1900 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1901 } | |
| 1902 | |
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1903 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
| 0 | 1904 constantPoolHandle cp(THREAD, k->constants()); |
| 1905 | |
| 1906 // Ensure class is linked | |
| 1907 k->link_class(CHECK_NULL); | |
| 1908 | |
| 1909 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
| 1910 bool skip_backtrace = false; | |
| 1911 | |
| 1912 // Allocate result | |
| 1913 int num_fields; | |
| 1914 | |
| 1915 if (publicOnly) { | |
| 1916 num_fields = 0; | |
| 3938 | 1917 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
| 1918 if (fs.access_flags().is_public()) ++num_fields; | |
| 0 | 1919 } |
| 1920 } else { | |
| 3938 | 1921 num_fields = k->java_fields_count(); |
| 0 | 1922 |
| 1142 | 1923 if (k() == SystemDictionary::Throwable_klass()) { |
| 0 | 1924 num_fields--; |
| 1925 skip_backtrace = true; | |
| 1926 } | |
| 1927 } | |
| 1928 | |
| 1142 | 1929 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
| 0 | 1930 objArrayHandle result (THREAD, r); |
| 1931 | |
| 1932 int out_idx = 0; | |
| 1933 fieldDescriptor fd; | |
| 3938 | 1934 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
| 0 | 1935 if (skip_backtrace) { |
| 1936 // 4496456 skip java.lang.Throwable.backtrace | |
| 3938 | 1937 int offset = fs.offset(); |
| 0 | 1938 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
| 1939 } | |
| 1940 | |
| 3938 | 1941 if (!publicOnly || fs.access_flags().is_public()) { |
|
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1942 fd.reinitialize(k(), fs.index()); |
| 0 | 1943 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
| 1944 result->obj_at_put(out_idx, field); | |
| 1945 ++out_idx; | |
| 1946 } | |
| 1947 } | |
| 1948 assert(out_idx == num_fields, "just checking"); | |
| 1949 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1950 } | |
| 1951 JVM_END | |
| 1952 | |
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1953 static bool select_method(methodHandle method, bool want_constructor) { |
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1954 if (want_constructor) { |
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1955 return (method->is_initializer() && !method->is_static()); |
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1956 } else { |
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1957 return (!method->is_initializer() && !method->is_overpass()); |
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1958 } |
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1959 } |
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1960 |
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1961 static jobjectArray get_class_declared_methods_helper( |
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1962 JNIEnv *env, |
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1963 jclass ofClass, jboolean publicOnly, |
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1964 bool want_constructor, |
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1965 Klass* klass, TRAPS) { |
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1966 |
| 0 | 1967 JvmtiVMObjectAllocEventCollector oam; |
| 1968 | |
| 1969 // Exclude primitive types and array types | |
| 1970 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
| 6983 | 1971 || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) { |
| 0 | 1972 // Return empty array |
|
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1973 oop res = oopFactory::new_objArray(klass, 0, CHECK_NULL); |
| 0 | 1974 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1975 } | |
| 1976 | |
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1977 instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))); |
| 0 | 1978 |
| 1979 // Ensure class is linked | |
| 1980 k->link_class(CHECK_NULL); | |
| 1981 | |
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1982 Array<Method*>* methods = k->methods(); |
| 0 | 1983 int methods_length = methods->length(); |
|
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1984 |
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1985 // Save original method_idnum in case of redefinition, which can change |
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1986 // the idnum of obsolete methods. The new method will have the same idnum |
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1987 // but if we refresh the methods array, the counts will be wrong. |
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1988 ResourceMark rm(THREAD); |
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1989 GrowableArray<int>* idnums = new GrowableArray<int>(methods_length); |
| 0 | 1990 int num_methods = 0; |
| 1991 | |
|
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1992 for (int i = 0; i < methods_length; i++) { |
|
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1993 methodHandle method(THREAD, methods->at(i)); |
|
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1994 if (select_method(method, want_constructor)) { |
| 0 | 1995 if (!publicOnly || method->is_public()) { |
|
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1996 idnums->push(method->method_idnum()); |
| 0 | 1997 ++num_methods; |
| 1998 } | |
| 1999 } | |
| 2000 } | |
| 2001 | |
| 2002 // Allocate result | |
|
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2003 objArrayOop r = oopFactory::new_objArray(klass, num_methods, CHECK_NULL); |
| 0 | 2004 objArrayHandle result (THREAD, r); |
| 2005 | |
|
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2006 // Now just put the methods that we selected above, but go by their idnum |
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2007 // in case of redefinition. The methods can be redefined at any safepoint, |
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2008 // so above when allocating the oop array and below when creating reflect |
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2009 // objects. |
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2010 for (int i = 0; i < num_methods; i++) { |
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2011 methodHandle method(THREAD, k->method_with_idnum(idnums->at(i))); |
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2012 if (method.is_null()) { |
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2013 // Method may have been deleted and seems this API can handle null |
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2014 // Otherwise should probably put a method that throws NSME |
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2015 result->obj_at_put(i, NULL); |
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2016 } else { |
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2017 oop m; |
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2018 if (want_constructor) { |
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2019 m = Reflection::new_constructor(method, CHECK_NULL); |
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2020 } else { |
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2021 m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); |
| 0 | 2022 } |
|
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2023 result->obj_at_put(i, m); |
| 0 | 2024 } |
| 2025 } | |
|
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2026 |
| 0 | 2027 return (jobjectArray) JNIHandles::make_local(env, result()); |
| 2028 } | |
|
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2029 |
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2030 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) |
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2031 { |
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2032 JVMWrapper("JVM_GetClassDeclaredMethods"); |
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2033 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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2034 /*want_constructor*/ false, |
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2035 SystemDictionary::reflect_Method_klass(), THREAD); |
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2036 } |
| 0 | 2037 JVM_END |
| 2038 | |
| 2039 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 2040 { | |
| 2041 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
|
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2042 return get_class_declared_methods_helper(env, ofClass, publicOnly, |
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2043 /*want_constructor*/ true, |
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2044 SystemDictionary::reflect_Constructor_klass(), THREAD); |
| 0 | 2045 } |
| 2046 JVM_END | |
| 2047 | |
| 2048 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
| 2049 { | |
| 2050 JVMWrapper("JVM_GetClassAccessFlags"); | |
| 2051 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 2052 // Primitive type | |
| 2053 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 2054 } | |
| 2055 | |
| 6983 | 2056 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2057 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; |
| 2058 } | |
| 2059 JVM_END | |
| 2060 | |
| 2061 | |
| 2062 // Constant pool access ////////////////////////////////////////////////////////// | |
| 2063 | |
| 2064 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
| 2065 { | |
| 2066 JVMWrapper("JVM_GetClassConstantPool"); | |
| 2067 JvmtiVMObjectAllocEventCollector oam; | |
| 2068 | |
| 2069 // Return null for primitives and arrays | |
| 2070 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
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2071 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 6983 | 2072 if (k->oop_is_instance()) { |
| 0 | 2073 instanceKlassHandle k_h(THREAD, k); |
| 2074 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
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2075 sun_reflect_ConstantPool::set_cp(jcp(), k_h->constants()); |
| 0 | 2076 return JNIHandles::make_local(jcp()); |
| 2077 } | |
| 2078 } | |
| 2079 return NULL; | |
| 2080 } | |
| 2081 JVM_END | |
| 2082 | |
| 2083 | |
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2084 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject obj, jobject unused)) |
| 0 | 2085 { |
| 2086 JVMWrapper("JVM_ConstantPoolGetSize"); | |
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2087 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2088 return cp->length(); |
| 2089 } | |
| 2090 JVM_END | |
| 2091 | |
| 2092 | |
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2093 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2094 { |
| 2095 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
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2096 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2097 bounds_check(cp, index, CHECK_NULL); |
| 2098 constantTag tag = cp->tag_at(index); | |
| 2099 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 2100 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2101 } | |
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2102 Klass* k = cp->klass_at(index, CHECK_NULL); |
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2103 return (jclass) JNIHandles::make_local(k->java_mirror()); |
| 0 | 2104 } |
| 2105 JVM_END | |
| 2106 | |
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2107 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2108 { |
| 2109 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
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2110 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2111 bounds_check(cp, index, CHECK_NULL); |
| 2112 constantTag tag = cp->tag_at(index); | |
| 2113 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 2114 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2115 } | |
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2116 Klass* k = ConstantPool::klass_at_if_loaded(cp, index); |
| 0 | 2117 if (k == NULL) return NULL; |
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2118 return (jclass) JNIHandles::make_local(k->java_mirror()); |
| 0 | 2119 } |
| 2120 JVM_END | |
| 2121 | |
| 2122 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 2123 constantTag tag = cp->tag_at(index); | |
| 2124 if (!tag.is_method() && !tag.is_interface_method()) { | |
| 2125 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2126 } | |
| 2127 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2128 Klass* k_o; |
| 0 | 2129 if (force_resolution) { |
| 2130 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 2131 } else { | |
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2132 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
| 0 | 2133 if (k_o == NULL) return NULL; |
| 2134 } | |
| 2135 instanceKlassHandle k(THREAD, k_o); | |
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2136 Symbol* name = cp->uncached_name_ref_at(index); |
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2137 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 2138 methodHandle m (THREAD, k->find_method(name, sig)); |
| 2139 if (m.is_null()) { | |
| 2140 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
| 2141 } | |
| 2142 oop method; | |
| 2143 if (!m->is_initializer() || m->is_static()) { | |
| 2144 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
| 2145 } else { | |
| 2146 method = Reflection::new_constructor(m, CHECK_NULL); | |
| 2147 } | |
| 2148 return JNIHandles::make_local(method); | |
| 2149 } | |
| 2150 | |
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2151 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2152 { |
| 2153 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
| 2154 JvmtiVMObjectAllocEventCollector oam; | |
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2155 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2156 bounds_check(cp, index, CHECK_NULL); |
| 2157 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
| 2158 return res; | |
| 2159 } | |
| 2160 JVM_END | |
| 2161 | |
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2162 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2163 { |
| 2164 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
| 2165 JvmtiVMObjectAllocEventCollector oam; | |
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2166 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2167 bounds_check(cp, index, CHECK_NULL); |
| 2168 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
| 2169 return res; | |
| 2170 } | |
| 2171 JVM_END | |
| 2172 | |
| 2173 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 2174 constantTag tag = cp->tag_at(index); | |
| 2175 if (!tag.is_field()) { | |
| 2176 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2177 } | |
| 2178 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2179 Klass* k_o; |
| 0 | 2180 if (force_resolution) { |
| 2181 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 2182 } else { | |
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2183 k_o = ConstantPool::klass_at_if_loaded(cp, klass_ref); |
| 0 | 2184 if (k_o == NULL) return NULL; |
| 2185 } | |
| 2186 instanceKlassHandle k(THREAD, k_o); | |
|
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2187 Symbol* name = cp->uncached_name_ref_at(index); |
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2188 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 2189 fieldDescriptor fd; |
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2190 Klass* target_klass = k->find_field(name, sig, &fd); |
| 0 | 2191 if (target_klass == NULL) { |
| 2192 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
| 2193 } | |
| 2194 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
| 2195 return JNIHandles::make_local(field); | |
| 2196 } | |
| 2197 | |
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2198 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject obj, jobject unusedl, jint index)) |
| 0 | 2199 { |
| 2200 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
| 2201 JvmtiVMObjectAllocEventCollector oam; | |
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2202 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2203 bounds_check(cp, index, CHECK_NULL); |
| 2204 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
| 2205 return res; | |
| 2206 } | |
| 2207 JVM_END | |
| 2208 | |
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2209 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2210 { |
| 2211 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
| 2212 JvmtiVMObjectAllocEventCollector oam; | |
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2213 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2214 bounds_check(cp, index, CHECK_NULL); |
| 2215 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
| 2216 return res; | |
| 2217 } | |
| 2218 JVM_END | |
| 2219 | |
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2220 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2221 { |
| 2222 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
| 2223 JvmtiVMObjectAllocEventCollector oam; | |
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2224 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2225 bounds_check(cp, index, CHECK_NULL); |
| 2226 constantTag tag = cp->tag_at(index); | |
| 2227 if (!tag.is_field_or_method()) { | |
| 2228 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2229 } | |
| 2230 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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2231 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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2232 Symbol* member_name = cp->uncached_name_ref_at(index); |
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2233 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
| 1142 | 2234 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
| 0 | 2235 objArrayHandle dest(THREAD, dest_o); |
| 2236 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
| 2237 dest->obj_at_put(0, str()); | |
| 2238 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
| 2239 dest->obj_at_put(1, str()); | |
| 2240 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
| 2241 dest->obj_at_put(2, str()); | |
| 2242 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 2243 } | |
| 2244 JVM_END | |
| 2245 | |
|
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2246 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2247 { |
| 2248 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
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2249 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2250 bounds_check(cp, index, CHECK_0); |
| 2251 constantTag tag = cp->tag_at(index); | |
| 2252 if (!tag.is_int()) { | |
| 2253 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2254 } | |
| 2255 return cp->int_at(index); | |
| 2256 } | |
| 2257 JVM_END | |
| 2258 | |
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2259 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2260 { |
| 2261 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
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2262 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2263 bounds_check(cp, index, CHECK_(0L)); |
| 2264 constantTag tag = cp->tag_at(index); | |
| 2265 if (!tag.is_long()) { | |
| 2266 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2267 } | |
| 2268 return cp->long_at(index); | |
| 2269 } | |
| 2270 JVM_END | |
| 2271 | |
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2272 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2273 { |
| 2274 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
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2275 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2276 bounds_check(cp, index, CHECK_(0.0f)); |
| 2277 constantTag tag = cp->tag_at(index); | |
| 2278 if (!tag.is_float()) { | |
| 2279 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2280 } | |
| 2281 return cp->float_at(index); | |
| 2282 } | |
| 2283 JVM_END | |
| 2284 | |
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2285 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2286 { |
| 2287 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
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2288 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2289 bounds_check(cp, index, CHECK_(0.0)); |
| 2290 constantTag tag = cp->tag_at(index); | |
| 2291 if (!tag.is_double()) { | |
| 2292 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2293 } | |
| 2294 return cp->double_at(index); | |
| 2295 } | |
| 2296 JVM_END | |
| 2297 | |
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2298 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2299 { |
| 2300 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
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2301 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2302 bounds_check(cp, index, CHECK_NULL); |
| 2303 constantTag tag = cp->tag_at(index); | |
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2304 if (!tag.is_string()) { |
| 0 | 2305 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); |
| 2306 } | |
| 2307 oop str = cp->string_at(index, CHECK_NULL); | |
| 2308 return (jstring) JNIHandles::make_local(str); | |
| 2309 } | |
| 2310 JVM_END | |
| 2311 | |
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2312 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject obj, jobject unused, jint index)) |
| 0 | 2313 { |
| 2314 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
| 2315 JvmtiVMObjectAllocEventCollector oam; | |
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2316 constantPoolHandle cp = constantPoolHandle(THREAD, sun_reflect_ConstantPool::get_cp(JNIHandles::resolve_non_null(obj))); |
| 0 | 2317 bounds_check(cp, index, CHECK_NULL); |
| 2318 constantTag tag = cp->tag_at(index); | |
| 2319 if (!tag.is_symbol()) { | |
| 2320 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2321 } | |
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2322 Symbol* sym = cp->symbol_at(index); |
| 0 | 2323 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 2324 return (jstring) JNIHandles::make_local(str()); | |
| 2325 } | |
| 2326 JVM_END | |
| 2327 | |
| 2328 | |
| 2329 // Assertion support. ////////////////////////////////////////////////////////// | |
| 2330 | |
| 2331 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
| 2332 JVMWrapper("JVM_DesiredAssertionStatus"); | |
| 2333 assert(cls != NULL, "bad class"); | |
| 2334 | |
| 2335 oop r = JNIHandles::resolve(cls); | |
| 2336 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
| 2337 if (java_lang_Class::is_primitive(r)) return false; | |
| 2338 | |
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2339 Klass* k = java_lang_Class::as_Klass(r); |
| 6983 | 2340 assert(k->oop_is_instance(), "must be an instance klass"); |
| 2341 if (! k->oop_is_instance()) return false; | |
| 0 | 2342 |
| 2343 ResourceMark rm(THREAD); | |
| 6983 | 2344 const char* name = k->name()->as_C_string(); |
| 2345 bool system_class = k->class_loader() == NULL; | |
| 0 | 2346 return JavaAssertions::enabled(name, system_class); |
| 2347 | |
| 2348 JVM_END | |
| 2349 | |
| 2350 | |
| 2351 // Return a new AssertionStatusDirectives object with the fields filled in with | |
| 2352 // command-line assertion arguments (i.e., -ea, -da). | |
| 2353 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
| 2354 JVMWrapper("JVM_AssertionStatusDirectives"); | |
| 2355 JvmtiVMObjectAllocEventCollector oam; | |
| 2356 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
| 2357 return JNIHandles::make_local(env, asd); | |
| 2358 JVM_END | |
| 2359 | |
| 2360 // Verification //////////////////////////////////////////////////////////////////////////////// | |
| 2361 | |
| 2362 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
| 2363 | |
| 2364 // RedefineClasses support: bug 6214132 caused verification to fail. | |
| 2365 // All functions from this section should call the jvmtiThreadSate function: | |
|
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2366 // Klass* class_to_verify_considering_redefinition(Klass* klass). |
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2367 // The function returns a Klass* of the _scratch_class if the verifier |
| 0 | 2368 // was invoked in the middle of the class redefinition. |
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2369 // Otherwise it returns its argument value which is the _the_class Klass*. |
| 0 | 2370 // Please, refer to the description in the jvmtiThreadSate.hpp. |
| 2371 | |
| 2372 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
| 2373 JVMWrapper("JVM_GetClassNameUTF"); | |
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2374 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2375 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2376 return k->name()->as_utf8(); |
| 0 | 2377 JVM_END |
| 2378 | |
| 2379 | |
| 2380 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
| 2381 JVMWrapper("JVM_GetClassCPTypes"); | |
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2382 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2383 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2384 // types will have length zero if this is not an InstanceKlass |
| 0 | 2385 // (length is determined by call to JVM_GetClassCPEntriesCount) |
| 6983 | 2386 if (k->oop_is_instance()) { |
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2387 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2388 for (int index = cp->length() - 1; index >= 0; index--) { |
| 2389 constantTag tag = cp->tag_at(index); | |
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2390 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : tag.value(); |
| 0 | 2391 } |
| 2392 } | |
| 2393 JVM_END | |
| 2394 | |
| 2395 | |
| 2396 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
| 2397 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
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2398 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2399 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2400 if (!k->oop_is_instance()) |
| 0 | 2401 return 0; |
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2402 return InstanceKlass::cast(k)->constants()->length(); |
| 0 | 2403 JVM_END |
| 2404 | |
| 2405 | |
| 2406 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
| 2407 JVMWrapper("JVM_GetClassFieldsCount"); | |
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2408 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2409 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 6983 | 2410 if (!k->oop_is_instance()) |
| 0 | 2411 return 0; |
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2412 return InstanceKlass::cast(k)->java_fields_count(); |
| 0 | 2413 JVM_END |
| 2414 | |
| 2415 | |
| 2416 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
| 2417 JVMWrapper("JVM_GetClassMethodsCount"); | |
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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)->methods()->length(); |
| 0 | 2423 JVM_END |
| 2424 | |
| 2425 | |
| 2426 // The following methods, used for the verifier, are never called with | |
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2427 // array klasses, so a direct cast to InstanceKlass is safe. |
| 0 | 2428 // Typically, these methods are called in a loop with bounds determined |
| 2429 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
| 2430 // zero for arrays. | |
| 2431 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
| 2432 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
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2433 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2434 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2435 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2436 int length = method->checked_exceptions_length(); |
| 0 | 2437 if (length > 0) { |
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2438 CheckedExceptionElement* table= method->checked_exceptions_start(); |
| 0 | 2439 for (int i = 0; i < length; i++) { |
| 2440 exceptions[i] = table[i].class_cp_index; | |
| 2441 } | |
| 2442 } | |
| 2443 JVM_END | |
| 2444 | |
| 2445 | |
| 2446 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
| 2447 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
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2448 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2449 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2450 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2451 return method->checked_exceptions_length(); |
| 0 | 2452 JVM_END |
| 2453 | |
| 2454 | |
| 2455 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
| 2456 JVMWrapper("JVM_GetMethodIxByteCode"); | |
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2457 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2458 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2459 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2460 memcpy(code, method->code_base(), method->code_size()); |
| 0 | 2461 JVM_END |
| 2462 | |
| 2463 | |
| 2464 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
| 2465 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
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2466 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2467 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2468 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2469 return method->code_size(); |
| 0 | 2470 JVM_END |
| 2471 | |
| 2472 | |
| 2473 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
| 2474 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
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2475 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2476 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2477 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2478 ExceptionTable extable(method); |
|
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|
2479 entry->start_pc = extable.start_pc(entry_index); |
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|
2480 entry->end_pc = extable.end_pc(entry_index); |
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2481 entry->handler_pc = extable.handler_pc(entry_index); |
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2482 entry->catchType = extable.catch_type_index(entry_index); |
| 0 | 2483 JVM_END |
| 2484 | |
| 2485 | |
| 2486 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
| 2487 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
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2488 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2489 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
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2490 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2491 return method->exception_table_length(); |
| 0 | 2492 JVM_END |
| 2493 | |
| 2494 | |
| 2495 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
| 2496 JVMWrapper("JVM_GetMethodIxModifiers"); | |
|
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2497 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2498 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2499 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2500 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
| 0 | 2501 JVM_END |
| 2502 | |
| 2503 | |
| 2504 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
| 2505 JVMWrapper("JVM_GetFieldIxModifiers"); | |
|
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2506 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2507 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2508 return InstanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
| 0 | 2509 JVM_END |
| 2510 | |
| 2511 | |
| 2512 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
| 2513 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
|
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2514 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2515 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2516 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2517 return method->max_locals(); |
| 0 | 2518 JVM_END |
| 2519 | |
| 2520 | |
| 2521 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
| 2522 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
|
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2523 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2524 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2525 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2526 return method->size_of_parameters(); |
| 0 | 2527 JVM_END |
| 2528 | |
| 2529 | |
| 2530 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
| 2531 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
|
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2532 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2533 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2534 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2535 return method->verifier_max_stack(); |
| 0 | 2536 JVM_END |
| 2537 | |
| 2538 | |
| 2539 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
| 2540 JVMWrapper("JVM_IsConstructorIx"); | |
| 2541 ResourceMark rm(THREAD); | |
|
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2542 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2543 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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2544 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
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2545 return method->name() == vmSymbols::object_initializer_name(); |
| 0 | 2546 JVM_END |
| 2547 | |
| 2548 | |
|
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|
2549 JVM_QUICK_ENTRY(jboolean, JVM_IsVMGeneratedMethodIx(JNIEnv *env, jclass cls, int method_index)) |
|
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|
2550 JVMWrapper("JVM_IsVMGeneratedMethodIx"); |
|
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|
2551 ResourceMark rm(THREAD); |
|
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|
2552 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
|
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|
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->is_overpass(); |
|
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|
2556 JVM_END |
|
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diff
changeset
|
2557 |
| 0 | 2558 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) |
| 2559 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
|
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|
2560 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2561 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2562 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2563 return method->name()->as_utf8(); |
| 0 | 2564 JVM_END |
| 2565 | |
| 2566 | |
| 2567 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
| 2568 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
|
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|
2569 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2570 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2571 Method* method = InstanceKlass::cast(k)->methods()->at(method_index); |
|
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|
2572 return method->signature()->as_utf8(); |
| 0 | 2573 JVM_END |
| 2574 | |
| 2575 /** | |
| 2576 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
| 2577 * read entries in the constant pool. Since the old verifier always | |
| 2578 * works on a copy of the code, it will not see any rewriting that | |
| 2579 * may possibly occur in the middle of verification. So it is important | |
| 2580 * that nothing it calls tries to use the cpCache instead of the raw | |
| 2581 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
| 2582 */ | |
| 2583 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2584 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
|
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|
2585 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2586 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2587 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2588 switch (cp->tag_at(cp_index).value()) { |
| 2589 case JVM_CONSTANT_Fieldref: | |
| 2590 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
| 2591 default: | |
| 2592 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
| 2593 } | |
| 2594 ShouldNotReachHere(); | |
| 2595 return NULL; | |
| 2596 JVM_END | |
| 2597 | |
| 2598 | |
| 2599 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2600 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
|
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|
2601 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2602 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2603 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2604 switch (cp->tag_at(cp_index).value()) { |
| 2605 case JVM_CONSTANT_InterfaceMethodref: | |
| 2606 case JVM_CONSTANT_Methodref: | |
|
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|
2607 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2608 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
| 2609 default: | |
| 2610 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
| 2611 } | |
| 2612 ShouldNotReachHere(); | |
| 2613 return NULL; | |
| 2614 JVM_END | |
| 2615 | |
| 2616 | |
| 2617 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2618 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
|
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|
2619 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2620 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2621 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2622 switch (cp->tag_at(cp_index).value()) { |
| 2623 case JVM_CONSTANT_InterfaceMethodref: | |
| 2624 case JVM_CONSTANT_Methodref: | |
|
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|
2625 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2626 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
| 2627 default: | |
| 2628 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
| 2629 } | |
| 2630 ShouldNotReachHere(); | |
| 2631 return NULL; | |
| 2632 JVM_END | |
| 2633 | |
| 2634 | |
| 2635 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2636 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
|
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|
2637 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2638 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2639 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2640 switch (cp->tag_at(cp_index).value()) { |
| 2641 case JVM_CONSTANT_Fieldref: | |
| 2642 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
| 2643 default: | |
| 2644 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
| 2645 } | |
| 2646 ShouldNotReachHere(); | |
| 2647 return NULL; | |
| 2648 JVM_END | |
| 2649 | |
| 2650 | |
| 2651 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2652 JVMWrapper("JVM_GetCPClassNameUTF"); | |
|
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|
2653 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2654 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2655 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
|
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diff
changeset
|
2656 Symbol* classname = cp->klass_name_at(cp_index); |
| 0 | 2657 return classname->as_utf8(); |
| 2658 JVM_END | |
| 2659 | |
| 2660 | |
| 2661 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2662 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
|
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|
2663 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2664 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2665 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2666 switch (cp->tag_at(cp_index).value()) { |
| 2667 case JVM_CONSTANT_Fieldref: { | |
| 2668 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
|
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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diff
changeset
|
2669 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2670 return classname->as_utf8(); |
| 2671 } | |
| 2672 default: | |
| 2673 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
| 2674 } | |
| 2675 ShouldNotReachHere(); | |
| 2676 return NULL; | |
| 2677 JVM_END | |
| 2678 | |
| 2679 | |
| 2680 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2681 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
|
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|
2682 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
| 0 | 2683 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
|
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|
2684 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2685 switch (cp->tag_at(cp_index).value()) { |
| 2686 case JVM_CONSTANT_Methodref: | |
| 2687 case JVM_CONSTANT_InterfaceMethodref: { | |
| 2688 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
|
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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diff
changeset
|
2689 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2690 return classname->as_utf8(); |
| 2691 } | |
| 2692 default: | |
| 2693 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
| 2694 } | |
| 2695 ShouldNotReachHere(); | |
| 2696 return NULL; | |
| 2697 JVM_END | |
| 2698 | |
| 2699 | |
| 3938 | 2700 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
| 0 | 2701 JVMWrapper("JVM_GetCPFieldModifiers"); |
|
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|
2702 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
|
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|
2703 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
| 0 | 2704 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 2705 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
|
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|
2706 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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|
2707 ConstantPool* cp_called = InstanceKlass::cast(k_called)->constants(); |
| 0 | 2708 switch (cp->tag_at(cp_index).value()) { |
| 2709 case JVM_CONSTANT_Fieldref: { | |
|
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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|
2710 Symbol* name = cp->uncached_name_ref_at(cp_index); |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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2162
diff
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|
2711 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
| 3938 | 2712 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
| 2713 if (fs.name() == name && fs.signature() == signature) { | |
| 2714 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
| 0 | 2715 } |
| 2716 } | |
| 2717 return -1; | |
| 2718 } | |
| 2719 default: | |
| 2720 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
| 2721 } | |
| 2722 ShouldNotReachHere(); | |
| 2723 return 0; | |
| 2724 JVM_END | |
| 2725 | |
| 2726 | |
| 2727 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
| 2728 JVMWrapper("JVM_GetCPMethodModifiers"); | |
|
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6964458: Reimplement class meta-data storage to use native memory
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|
2729 Klass* k = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(cls)); |
|
da91efe96a93
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|
2730 Klass* k_called = java_lang_Class::as_Klass(JNIHandles::resolve_non_null(called_cls)); |
| 0 | 2731 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); |
| 2732 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
|
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|
2733 ConstantPool* cp = InstanceKlass::cast(k)->constants(); |
| 0 | 2734 switch (cp->tag_at(cp_index).value()) { |
| 2735 case JVM_CONSTANT_Methodref: | |
| 2736 case JVM_CONSTANT_InterfaceMethodref: { | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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2162
diff
changeset
|
2737 Symbol* name = cp->uncached_name_ref_at(cp_index); |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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2162
diff
changeset
|
2738 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
|
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|
2739 Array<Method*>* methods = InstanceKlass::cast(k_called)->methods(); |
| 0 | 2740 int methods_count = methods->length(); |
| 2741 for (int i = 0; i < methods_count; i++) { | |
|
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|
2742 Method* method = methods->at(i); |
| 0 | 2743 if (method->name() == name && method->signature() == signature) { |
| 2744 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 2745 } | |
| 2746 } | |
| 2747 return -1; | |
| 2748 } | |
| 2749 default: | |
| 2750 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
| 2751 } | |
| 2752 ShouldNotReachHere(); | |
| 2753 return 0; | |
| 2754 JVM_END | |
| 2755 | |
| 2756 | |
| 2757 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
| 2758 | |
| 2759 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
| 2760 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
| 2761 JVM_END | |
| 2762 | |
| 2763 | |
| 2764 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
| 2765 JVMWrapper("JVM_IsSameClassPackage"); | |
| 2766 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
| 2767 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
|
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|
2768 Klass* klass1 = java_lang_Class::as_Klass(class1_mirror); |
|
da91efe96a93
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|
2769 Klass* klass2 = java_lang_Class::as_Klass(class2_mirror); |
| 0 | 2770 return (jboolean) Reflection::is_same_class_package(klass1, klass2); |
| 2771 JVM_END | |
| 2772 | |
| 2773 | |
| 2774 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
| 2775 | |
| 2776 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
| 2777 JVMWrapper2("JVM_Open (%s)", fname); | |
| 2778 | |
| 2779 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2780 int result = os::open(fname, flags, mode); |
| 0 | 2781 if (result >= 0) { |
| 2782 return result; | |
| 2783 } else { | |
| 2784 switch(errno) { | |
| 2785 case EEXIST: | |
| 2786 return JVM_EEXIST; | |
| 2787 default: | |
| 2788 return -1; | |
| 2789 } | |
| 2790 } | |
| 2791 JVM_END | |
| 2792 | |
| 2793 | |
| 2794 JVM_LEAF(jint, JVM_Close(jint fd)) | |
| 2795 JVMWrapper2("JVM_Close (0x%x)", fd); | |
| 2796 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2797 return os::close(fd); |
| 0 | 2798 JVM_END |
| 2799 | |
| 2800 | |
| 2801 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
| 2802 JVMWrapper2("JVM_Read (0x%x)", fd); | |
| 2803 | |
| 2804 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
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diff
changeset
|
2805 return (jint)os::restartable_read(fd, buf, nbytes); |
| 0 | 2806 JVM_END |
| 2807 | |
| 2808 | |
| 2809 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
| 2810 JVMWrapper2("JVM_Write (0x%x)", fd); | |
| 2811 | |
| 2812 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2813 return (jint)os::write(fd, buf, nbytes); |
| 0 | 2814 JVM_END |
| 2815 | |
| 2816 | |
| 2817 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
| 2818 JVMWrapper2("JVM_Available (0x%x)", fd); | |
| 2819 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2820 return os::available(fd, pbytes); |
| 0 | 2821 JVM_END |
| 2822 | |
| 2823 | |
| 2824 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
|
2825 JVMWrapper4("JVM_Lseek (0x%x, " INT64_FORMAT ", %d)", fd, (int64_t) offset, whence); |
| 0 | 2826 //%note jvm_r6 |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2827 return os::lseek(fd, offset, whence); |
| 0 | 2828 JVM_END |
| 2829 | |
| 2830 | |
| 2831 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
|
17937
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8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents:
17889
diff
changeset
|
2832 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
|
2833 return os::ftruncate(fd, length); |
| 0 | 2834 JVM_END |
| 2835 | |
| 2836 | |
| 2837 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
| 2838 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
| 2839 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
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diff
changeset
|
2840 return os::fsync(fd); |
| 0 | 2841 JVM_END |
| 2842 | |
| 2843 | |
| 2844 // Printing support ////////////////////////////////////////////////// | |
| 2845 extern "C" { | |
| 2846 | |
|
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|
2847 ATTRIBUTE_PRINTF(3, 0) |
| 0 | 2848 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { |
| 2849 // see bug 4399518, 4417214 | |
| 2850 if ((intptr_t)count <= 0) return -1; | |
| 2851 return vsnprintf(str, count, fmt, args); | |
| 2852 } | |
| 2853 | |
|
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diff
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|
2854 ATTRIBUTE_PRINTF(3, 0) |
| 0 | 2855 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { |
| 2856 va_list args; | |
| 2857 int len; | |
| 2858 va_start(args, fmt); | |
| 2859 len = jio_vsnprintf(str, count, fmt, args); | |
| 2860 va_end(args); | |
| 2861 return len; | |
| 2862 } | |
| 2863 | |
|
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|
2864 ATTRIBUTE_PRINTF(2,3) |
| 0 | 2865 int jio_fprintf(FILE* f, const char *fmt, ...) { |
| 2866 int len; | |
| 2867 va_list args; | |
| 2868 va_start(args, fmt); | |
| 2869 len = jio_vfprintf(f, fmt, args); | |
| 2870 va_end(args); | |
| 2871 return len; | |
| 2872 } | |
| 2873 | |
|
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|
2874 ATTRIBUTE_PRINTF(2, 0) |
| 0 | 2875 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { |
| 2876 if (Arguments::vfprintf_hook() != NULL) { | |
| 2877 return Arguments::vfprintf_hook()(f, fmt, args); | |
| 2878 } else { | |
| 2879 return vfprintf(f, fmt, args); | |
| 2880 } | |
| 2881 } | |
| 2882 | |
|
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|
2883 ATTRIBUTE_PRINTF(1, 2) |
| 2191 | 2884 JNIEXPORT int jio_printf(const char *fmt, ...) { |
| 0 | 2885 int len; |
| 2886 va_list args; | |
| 2887 va_start(args, fmt); | |
| 2888 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
| 2889 va_end(args); | |
| 2890 return len; | |
| 2891 } | |
| 2892 | |
| 2893 | |
| 2894 // HotSpot specific jio method | |
| 2895 void jio_print(const char* s) { | |
| 2896 // Try to make this function as atomic as possible. | |
| 2897 if (Arguments::vfprintf_hook() != NULL) { | |
| 2898 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
| 2899 } else { | |
|
513
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diff
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|
2900 // Make an unused local variable to avoid warning from gcc 4.x compiler. |
|
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|
2901 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
| 0 | 2902 } |
| 2903 } | |
| 2904 | |
| 2905 } // Extern C | |
| 2906 | |
| 2907 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
| 2908 | |
| 2909 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
| 2910 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
| 2911 // OSThread objects. The exception to this rule is when the target object is the thread | |
| 2912 // doing the operation, in which case we know that the thread won't exit until the | |
| 2913 // operation is done (all exits being voluntary). There are a few cases where it is | |
| 2914 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
| 2915 // you are alive. While these can still happen, they are not subject to deadlocks if | |
| 2916 // the lock is held while the operation occurs (this is not the case for suspend, for | |
| 2917 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
| 2918 // implementation is local to this file, we always lock Threads_lock for that one. | |
| 2919 | |
| 2920 static void thread_entry(JavaThread* thread, TRAPS) { | |
| 2921 HandleMark hm(THREAD); | |
| 2922 Handle obj(THREAD, thread->threadObj()); | |
| 2923 JavaValue result(T_VOID); | |
| 2924 JavaCalls::call_virtual(&result, | |
| 2925 obj, | |
| 1142 | 2926 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
|
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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diff
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|
2927 vmSymbols::run_method_name(), |
|
3582bf76420e
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coleenp
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2162
diff
changeset
|
2928 vmSymbols::void_method_signature(), |
| 0 | 2929 THREAD); |
| 2930 } | |
| 2931 | |
| 2932 | |
| 2933 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
| 2934 JVMWrapper("JVM_StartThread"); | |
| 2935 JavaThread *native_thread = NULL; | |
| 2936 | |
| 2937 // We cannot hold the Threads_lock when we throw an exception, | |
| 2938 // due to rank ordering issues. Example: we might need to grab the | |
| 2939 // Heap_lock while we construct the exception. | |
| 2940 bool throw_illegal_thread_state = false; | |
| 2941 | |
| 2942 // We must release the Threads_lock before we can post a jvmti event | |
| 2943 // in Thread::start. | |
| 2944 { | |
| 2945 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
| 2946 // we operate. | |
| 2947 MutexLocker mu(Threads_lock); | |
| 2948 | |
|
2162
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1980
diff
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|
2949 // Since JDK 5 the java.lang.Thread threadStatus is used to prevent |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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1980
diff
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|
2950 // re-starting an already started thread, so we should usually find |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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1980
diff
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|
2951 // that the JavaThread is null. However for a JNI attached thread |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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1980
diff
changeset
|
2952 // there is a small window between the Thread object being created |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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1980
diff
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|
2953 // (with its JavaThread set) and the update to its threadStatus, so we |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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1980
diff
changeset
|
2954 // have to check for this |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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1980
diff
changeset
|
2955 if (java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)) != NULL) { |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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1980
diff
changeset
|
2956 throw_illegal_thread_state = true; |
| 0 | 2957 } else { |
|
2162
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1980
diff
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|
2958 // 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
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1980
diff
changeset
|
2959 // for historical reasons we let the thread detect that itself when it starts running |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
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|
2960 |
| 0 | 2961 jlong size = |
| 2962 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
| 2963 // Allocate the C++ Thread structure and create the native thread. The | |
| 2964 // stack size retrieved from java is signed, but the constructor takes | |
| 2965 // size_t (an unsigned type), so avoid passing negative values which would | |
| 2966 // result in really large stacks. | |
| 2967 size_t sz = size > 0 ? (size_t) size : 0; | |
| 2968 native_thread = new JavaThread(&thread_entry, sz); | |
| 2969 | |
| 2970 // At this point it may be possible that no osthread was created for the | |
| 2971 // JavaThread due to lack of memory. Check for this situation and throw | |
| 2972 // an exception if necessary. Eventually we may want to change this so | |
| 2973 // that we only grab the lock if the thread was created successfully - | |
| 2974 // then we can also do this check and throw the exception in the | |
| 2975 // JavaThread constructor. | |
| 2976 if (native_thread->osthread() != NULL) { | |
| 2977 // Note: the current thread is not being used within "prepare". | |
| 2978 native_thread->prepare(jthread); | |
| 2979 } | |
| 2980 } | |
| 2981 } | |
| 2982 | |
| 2983 if (throw_illegal_thread_state) { | |
| 2984 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
| 2985 } | |
| 2986 | |
| 2987 assert(native_thread != NULL, "Starting null thread?"); | |
| 2988 | |
| 2989 if (native_thread->osthread() == NULL) { | |
| 2990 // No one should hold a reference to the 'native_thread'. | |
| 2991 delete native_thread; | |
| 2992 if (JvmtiExport::should_post_resource_exhausted()) { | |
| 2993 JvmtiExport::post_resource_exhausted( | |
| 2994 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
| 2995 "unable to create new native thread"); | |
| 2996 } | |
| 2997 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
| 2998 "unable to create new native thread"); | |
| 2999 } | |
| 3000 | |
| 3001 Thread::start(native_thread); | |
| 3002 | |
| 3003 JVM_END | |
| 3004 | |
| 3005 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
| 3006 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
| 3007 // but is thought to be reliable and simple. In the case, where the receiver is the | |
|
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diff
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|
3008 // same thread as the sender, no safepoint is needed. |
| 0 | 3009 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
| 3010 JVMWrapper("JVM_StopThread"); | |
| 3011 | |
| 3012 oop java_throwable = JNIHandles::resolve(throwable); | |
| 3013 if (java_throwable == NULL) { | |
| 3014 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 3015 } | |
| 3016 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3017 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
|
4872
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
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4717
diff
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|
3018 Events::log_exception(JavaThread::current(), |
|
aa3d708d67c4
7141200: log some interesting information in ring buffers for crashes
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4717
diff
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|
3019 "JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", |
|
17937
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|
3020 p2i(receiver), p2i((address)java_thread), p2i(throwable)); |
|
2162
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
changeset
|
3021 // First check if thread is alive |
| 0 | 3022 if (receiver != NULL) { |
| 3023 // Check if exception is getting thrown at self (use oop equality, since the | |
| 3024 // target object might exit) | |
| 3025 if (java_thread == thread->threadObj()) { | |
| 3026 THROW_OOP(java_throwable); | |
| 3027 } else { | |
| 3028 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
| 3029 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
| 3030 } | |
| 3031 } | |
|
2162
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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diff
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|
3032 else { |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
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diff
changeset
|
3033 // Either: |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
parents:
1980
diff
changeset
|
3034 // - 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
|
3035 // - 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
|
3036 // 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
|
3037 // 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
|
3038 // 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
|
3039 // 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
|
3040 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
|
3041 } |
| 0 | 3042 JVM_END |
| 3043 | |
| 3044 | |
| 3045 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
| 3046 JVMWrapper("JVM_IsThreadAlive"); | |
| 3047 | |
| 3048 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
| 3049 return java_lang_Thread::is_alive(thread_oop); | |
| 3050 JVM_END | |
| 3051 | |
| 3052 | |
| 3053 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
| 3054 JVMWrapper("JVM_SuspendThread"); | |
| 3055 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3056 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
| 3057 | |
| 3058 if (receiver != NULL) { | |
| 3059 // thread has run and has not exited (still on threads list) | |
| 3060 | |
| 3061 { | |
| 3062 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
| 3063 if (receiver->is_external_suspend()) { | |
| 3064 // Don't allow nested external suspend requests. We can't return | |
| 3065 // an error from this interface so just ignore the problem. | |
| 3066 return; | |
| 3067 } | |
| 3068 if (receiver->is_exiting()) { // thread is in the process of exiting | |
| 3069 return; | |
| 3070 } | |
| 3071 receiver->set_external_suspend(); | |
| 3072 } | |
| 3073 | |
| 3074 // java_suspend() will catch threads in the process of exiting | |
| 3075 // and will ignore them. | |
| 3076 receiver->java_suspend(); | |
| 3077 | |
| 3078 // It would be nice to have the following assertion in all the | |
| 3079 // time, but it is possible for a racing resume request to have | |
| 3080 // resumed this thread right after we suspended it. Temporarily | |
| 3081 // enable this assertion if you are chasing a different kind of | |
| 3082 // bug. | |
| 3083 // | |
| 3084 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
| 3085 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
| 3086 } | |
| 3087 JVM_END | |
| 3088 | |
| 3089 | |
| 3090 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
| 3091 JVMWrapper("JVM_ResumeThread"); | |
| 3092 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
| 3093 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
| 3094 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
| 3095 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
| 3096 // looks at it. | |
| 3097 MutexLocker ml(Threads_lock); | |
| 3098 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3099 if (thr != NULL) { | |
| 3100 // the thread has run and is not in the process of exiting | |
| 3101 thr->java_resume(); | |
| 3102 } | |
| 3103 JVM_END | |
| 3104 | |
| 3105 | |
| 3106 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
| 3107 JVMWrapper("JVM_SetThreadPriority"); | |
| 3108 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3109 MutexLocker ml(Threads_lock); | |
| 3110 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3111 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
| 3112 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 3113 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
| 3114 Thread::set_priority(thr, (ThreadPriority)prio); | |
| 3115 } | |
| 3116 JVM_END | |
| 3117 | |
| 3118 | |
| 3119 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
| 3120 JVMWrapper("JVM_Yield"); | |
| 3121 if (os::dont_yield()) return; | |
| 4006 | 3122 #ifndef USDT2 |
|
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1144
diff
changeset
|
3123 HS_DTRACE_PROBE0(hotspot, thread__yield); |
| 4006 | 3124 #else /* USDT2 */ |
| 3125 HOTSPOT_THREAD_YIELD(); | |
| 3126 #endif /* USDT2 */ | |
| 0 | 3127 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
| 3128 // Critical for similar threading behaviour | |
| 3129 if (ConvertYieldToSleep) { | |
| 3130 os::sleep(thread, MinSleepInterval, false); | |
| 3131 } else { | |
| 3132 os::yield(); | |
| 3133 } | |
| 3134 JVM_END | |
| 3135 | |
| 3136 | |
| 3137 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
| 3138 JVMWrapper("JVM_Sleep"); | |
| 3139 | |
| 3140 if (millis < 0) { | |
| 3141 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
| 3142 } | |
| 3143 | |
| 3144 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
| 3145 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 3146 } | |
| 3147 | |
| 3148 // Save current thread state and restore it at the end of this block. | |
| 3149 // And set new thread state to SLEEPING. | |
| 3150 JavaThreadSleepState jtss(thread); | |
| 3151 | |
| 4006 | 3152 #ifndef USDT2 |
|
1324
e392695de029
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parents:
1144
diff
changeset
|
3153 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); |
| 4006 | 3154 #else /* USDT2 */ |
| 3155 HOTSPOT_THREAD_SLEEP_BEGIN( | |
| 3156 millis); | |
| 3157 #endif /* USDT2 */ | |
|
1324
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parents:
1144
diff
changeset
|
3158 |
| 10405 | 3159 EventThreadSleep event; |
| 3160 | |
| 0 | 3161 if (millis == 0) { |
| 3162 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
| 3163 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
| 3164 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
| 3165 // for SOLARIS | |
| 3166 if (ConvertSleepToYield) { | |
| 3167 os::yield(); | |
| 3168 } else { | |
| 3169 ThreadState old_state = thread->osthread()->get_state(); | |
| 3170 thread->osthread()->set_state(SLEEPING); | |
| 3171 os::sleep(thread, MinSleepInterval, false); | |
| 3172 thread->osthread()->set_state(old_state); | |
| 3173 } | |
| 3174 } else { | |
| 3175 ThreadState old_state = thread->osthread()->get_state(); | |
| 3176 thread->osthread()->set_state(SLEEPING); | |
| 3177 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
| 3178 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
| 3179 // us while we were sleeping. We do not overwrite those. | |
| 3180 if (!HAS_PENDING_EXCEPTION) { | |
| 10405 | 3181 if (event.should_commit()) { |
| 3182 event.set_time(millis); | |
| 3183 event.commit(); | |
| 3184 } | |
| 4006 | 3185 #ifndef USDT2 |
|
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1144
diff
changeset
|
3186 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); |
| 4006 | 3187 #else /* USDT2 */ |
| 3188 HOTSPOT_THREAD_SLEEP_END( | |
| 3189 1); | |
| 3190 #endif /* USDT2 */ | |
| 0 | 3191 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
| 3192 // to properly restore the thread state. That's likely wrong. | |
| 3193 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 3194 } | |
| 3195 } | |
| 3196 thread->osthread()->set_state(old_state); | |
| 3197 } | |
| 10405 | 3198 if (event.should_commit()) { |
| 3199 event.set_time(millis); | |
| 3200 event.commit(); | |
| 3201 } | |
| 4006 | 3202 #ifndef USDT2 |
|
1324
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1144
diff
changeset
|
3203 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); |
| 4006 | 3204 #else /* USDT2 */ |
| 3205 HOTSPOT_THREAD_SLEEP_END( | |
| 3206 0); | |
| 3207 #endif /* USDT2 */ | |
| 0 | 3208 JVM_END |
| 3209 | |
| 3210 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
| 3211 JVMWrapper("JVM_CurrentThread"); | |
| 3212 oop jthread = thread->threadObj(); | |
| 3213 assert (thread != NULL, "no current thread!"); | |
| 3214 return JNIHandles::make_local(env, jthread); | |
| 3215 JVM_END | |
| 3216 | |
| 3217 | |
| 3218 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
| 3219 JVMWrapper("JVM_CountStackFrames"); | |
| 3220 | |
| 3221 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3222 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3223 bool throw_illegal_thread_state = false; | |
| 3224 int count = 0; | |
| 3225 | |
| 3226 { | |
| 3227 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 3228 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 3229 // acquire of the lock | |
| 3230 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3231 | |
| 3232 if (thr == NULL) { | |
| 3233 // do nothing | |
| 3234 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
| 3235 // Check whether this java thread has been suspended already. If not, throws | |
| 3236 // IllegalThreadStateException. We defer to throw that exception until | |
| 3237 // Threads_lock is released since loading exception class has to leave VM. | |
| 3238 // The correct way to test a thread is actually suspended is | |
| 3239 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
| 3240 // the Threads_lock. The above tests are sufficient for our purposes | |
| 3241 // provided the walkability of the stack is stable - which it isn't | |
| 3242 // 100% but close enough for most practical purposes. | |
| 3243 throw_illegal_thread_state = true; | |
| 3244 } else { | |
| 3245 // Count all java activation, i.e., number of vframes | |
| 3246 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
| 3247 // Native frames are not counted | |
| 3248 if (!vfst.method()->is_native()) count++; | |
| 3249 } | |
| 3250 } | |
| 3251 } | |
| 3252 | |
| 3253 if (throw_illegal_thread_state) { | |
| 3254 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
| 3255 "this thread is not suspended"); | |
| 3256 } | |
| 3257 return count; | |
| 3258 JVM_END | |
| 3259 | |
| 3260 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
| 3261 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
| 3262 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
| 3263 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
| 3264 // outside the critical section. Threads_lock is hot so we want to minimize | |
| 3265 // the hold-time. A cleaner interface would be to decompose interrupt into | |
| 3266 // two steps. The 1st phase, performed under Threads_lock, would return | |
| 3267 // a closure that'd be invoked after Threads_lock was dropped. | |
| 3268 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
| 3269 // admit spurious wakeups. | |
| 3270 | |
| 3271 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
| 3272 JVMWrapper("JVM_Interrupt"); | |
| 3273 | |
| 3274 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3275 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3276 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 3277 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 3278 // acquire of the lock | |
| 3279 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3280 if (thr != NULL) { | |
| 3281 Thread::interrupt(thr); | |
| 3282 } | |
| 3283 JVM_END | |
| 3284 | |
| 3285 | |
| 3286 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
| 3287 JVMWrapper("JVM_IsInterrupted"); | |
| 3288 | |
| 3289 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 3290 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3291 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 3292 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 3293 // acquire of the lock | |
| 3294 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 3295 if (thr == NULL) { | |
| 3296 return JNI_FALSE; | |
| 3297 } else { | |
| 3298 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
| 3299 } | |
| 3300 JVM_END | |
| 3301 | |
| 3302 | |
| 3303 // Return true iff the current thread has locked the object passed in | |
| 3304 | |
| 3305 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
| 3306 JVMWrapper("JVM_HoldsLock"); | |
| 3307 assert(THREAD->is_Java_thread(), "sanity check"); | |
| 3308 if (obj == NULL) { | |
| 3309 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
| 3310 } | |
| 3311 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
| 3312 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
| 3313 JVM_END | |
| 3314 | |
| 3315 | |
| 3316 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
| 3317 JVMWrapper("JVM_DumpAllStacks"); | |
| 3318 VM_PrintThreads op; | |
| 3319 VMThread::execute(&op); | |
| 3320 if (JvmtiExport::should_post_data_dump()) { | |
| 3321 JvmtiExport::post_data_dump(); | |
| 3322 } | |
| 3323 JVM_END | |
| 3324 | |
| 4006 | 3325 JVM_ENTRY(void, JVM_SetNativeThreadName(JNIEnv* env, jobject jthread, jstring name)) |
| 3326 JVMWrapper("JVM_SetNativeThreadName"); | |
| 3327 ResourceMark rm(THREAD); | |
| 3328 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 3329 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 3330 // Thread naming only supported for the current thread, doesn't work for | |
| 3331 // target threads. | |
| 3332 if (Thread::current() == thr && !thr->has_attached_via_jni()) { | |
| 3333 // we don't set the name of an attached thread to avoid stepping | |
| 3334 // on other programs | |
| 3335 const char *thread_name = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
| 3336 os::set_native_thread_name(thread_name); | |
| 3337 } | |
| 3338 JVM_END | |
| 0 | 3339 |
| 3340 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
| 3341 | |
| 3342 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
| 3343 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
| 3344 if (jthread->privileged_stack_top() == NULL) return false; | |
| 3345 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
| 3346 oop loader = jthread->privileged_stack_top()->class_loader(); | |
| 3347 if (loader == NULL) return true; | |
| 3348 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
| 3349 if (trusted) return true; | |
| 3350 } | |
| 3351 return false; | |
| 3352 } | |
| 3353 | |
| 3354 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
| 3355 JVMWrapper("JVM_CurrentLoadedClass"); | |
| 3356 ResourceMark rm(THREAD); | |
| 3357 | |
| 3358 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3359 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3360 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3361 if (trusted) return NULL; | |
| 3362 | |
|
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6271
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|
3363 Method* m = vfst.method(); |
| 0 | 3364 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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|
3365 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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|
3366 oop loader = holder->class_loader(); |
| 0 | 3367 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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diff
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|
3368 return (jclass) JNIHandles::make_local(env, holder->java_mirror()); |
| 0 | 3369 } |
| 3370 } | |
| 3371 } | |
| 3372 return NULL; | |
| 3373 JVM_END | |
| 3374 | |
| 3375 | |
| 3376 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
| 3377 JVMWrapper("JVM_CurrentClassLoader"); | |
| 3378 ResourceMark rm(THREAD); | |
| 3379 | |
| 3380 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3381 | |
| 3382 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3383 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3384 if (trusted) return NULL; | |
| 3385 | |
|
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|
3386 Method* m = vfst.method(); |
| 0 | 3387 if (!m->is_native()) { |
|
6940
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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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|
3388 InstanceKlass* holder = m->method_holder(); |
| 0 | 3389 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
|
3390 oop loader = holder->class_loader(); |
| 0 | 3391 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
| 3392 return JNIHandles::make_local(env, loader); | |
| 3393 } | |
| 3394 } | |
| 3395 } | |
| 3396 return NULL; | |
| 3397 JVM_END | |
| 3398 | |
| 3399 | |
| 3400 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
| 3401 JVMWrapper("JVM_GetClassContext"); | |
| 3402 ResourceMark rm(THREAD); | |
| 3403 JvmtiVMObjectAllocEventCollector oam; | |
|
8866
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7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3404 vframeStream vfst(thread); |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3405 |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
3406 if (SystemDictionary::reflect_CallerSensitive_klass() != NULL) { |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
3407 // This must only be called from SecurityManager.getClassContext |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
3408 Method* m = vfst.method(); |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3409 if (!(m->method_holder() == SystemDictionary::SecurityManager_klass() && |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
3410 m->name() == vmSymbols::getClassContext_name() && |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
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8031
diff
changeset
|
3411 m->signature() == vmSymbols::void_class_array_signature())) { |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
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8031
diff
changeset
|
3412 THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVM_GetClassContext must only be called from SecurityManager.getClassContext"); |
|
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|
3413 } |
|
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
3414 } |
|
16885e702c88
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|
3415 |
|
16885e702c88
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|
3416 // Collect method holders |
|
11001
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8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
drchase
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10343
diff
changeset
|
3417 GrowableArray<KlassHandle>* klass_array = new GrowableArray<KlassHandle>(); |
|
8866
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|
3418 for (; !vfst.at_end(); vfst.security_next()) { |
|
16885e702c88
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diff
changeset
|
3419 Method* m = vfst.method(); |
| 0 | 3420 // Native frames are not returned |
|
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|
3421 if (!m->is_ignored_by_security_stack_walk() && !m->is_native()) { |
|
16885e702c88
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changeset
|
3422 Klass* holder = m->method_holder(); |
| 0 | 3423 assert(holder->is_klass(), "just checking"); |
|
11001
c52abc8a0b08
8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
drchase
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10343
diff
changeset
|
3424 klass_array->append(holder); |
| 0 | 3425 } |
| 3426 } | |
| 3427 | |
| 3428 // Create result array of type [Ljava/lang/Class; | |
|
11001
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8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
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diff
changeset
|
3429 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), klass_array->length(), CHECK_NULL); |
| 0 | 3430 // Fill in mirrors corresponding to method holders |
|
11001
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8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
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10343
diff
changeset
|
3431 for (int i = 0; i < klass_array->length(); i++) { |
|
c52abc8a0b08
8010124: JVM_GetClassContext: use GrowableArray instead of KlassLink
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diff
changeset
|
3432 result->obj_at_put(i, klass_array->at(i)->java_mirror()); |
| 0 | 3433 } |
| 3434 | |
| 3435 return (jobjectArray) JNIHandles::make_local(env, result); | |
| 3436 JVM_END | |
| 3437 | |
| 3438 | |
| 3439 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
| 3440 JVMWrapper("JVM_ClassDepth"); | |
| 3441 ResourceMark rm(THREAD); | |
| 3442 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 3443 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
| 3444 | |
| 3445 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
|
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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2162
diff
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|
3446 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
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2162
diff
changeset
|
3447 if (class_name_sym == NULL) { |
| 0 | 3448 return -1; |
| 3449 } | |
| 3450 | |
| 3451 int depth = 0; | |
| 3452 | |
| 3453 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3454 if (!vfst.method()->is_native()) { | |
|
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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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|
3455 InstanceKlass* holder = vfst.method()->method_holder(); |
| 0 | 3456 assert(holder->is_klass(), "just checking"); |
|
6940
18fb7da42534
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coleenp
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6831
diff
changeset
|
3457 if (holder->name() == class_name_sym) { |
| 0 | 3458 return depth; |
| 3459 } | |
| 3460 depth++; | |
| 3461 } | |
| 3462 } | |
| 3463 return -1; | |
| 3464 JVM_END | |
| 3465 | |
| 3466 | |
| 3467 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
| 3468 JVMWrapper("JVM_ClassLoaderDepth"); | |
| 3469 ResourceMark rm(THREAD); | |
| 3470 int depth = 0; | |
| 3471 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3472 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
| 3473 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3474 if (trusted) return -1; | |
| 3475 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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changeset
|
3476 Method* m = vfst.method(); |
| 0 | 3477 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
|
3478 InstanceKlass* holder = m->method_holder(); |
| 0 | 3479 assert(holder->is_klass(), "just checking"); |
|
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
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6831
diff
changeset
|
3480 oop loader = holder->class_loader(); |
| 0 | 3481 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { |
| 3482 return depth; | |
| 3483 } | |
| 3484 depth++; | |
| 3485 } | |
| 3486 } | |
| 3487 return -1; | |
| 3488 JVM_END | |
| 3489 | |
| 3490 | |
| 3491 // java.lang.Package //////////////////////////////////////////////////////////////// | |
| 3492 | |
| 3493 | |
| 3494 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
| 3495 JVMWrapper("JVM_GetSystemPackage"); | |
| 3496 ResourceMark rm(THREAD); | |
| 3497 JvmtiVMObjectAllocEventCollector oam; | |
| 3498 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
| 3499 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
| 3500 return (jstring) JNIHandles::make_local(result); | |
| 3501 JVM_END | |
| 3502 | |
| 3503 | |
| 3504 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
| 3505 JVMWrapper("JVM_GetSystemPackages"); | |
| 3506 JvmtiVMObjectAllocEventCollector oam; | |
| 3507 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
| 3508 return (jobjectArray) JNIHandles::make_local(result); | |
| 3509 JVM_END | |
| 3510 | |
| 3511 | |
| 3512 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
| 3513 | |
|
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da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3514 bool force_verify_field_access(Klass* current_class, Klass* field_class, AccessFlags access, bool classloader_only) { |
| 0 | 3515 if (current_class == NULL) { |
| 3516 return true; | |
| 3517 } | |
| 3518 if ((current_class == field_class) || access.is_public()) { | |
| 3519 return true; | |
| 3520 } | |
| 3521 | |
| 3522 if (access.is_protected()) { | |
| 3523 // See if current_class is a subclass of field_class | |
| 6983 | 3524 if (current_class->is_subclass_of(field_class)) { |
| 0 | 3525 return true; |
| 3526 } | |
| 3527 } | |
| 3528 | |
|
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da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6271
diff
changeset
|
3529 return (!access.is_private() && InstanceKlass::cast(current_class)->is_same_class_package(field_class)); |
| 0 | 3530 } |
| 3531 | |
| 3532 | |
| 3533 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
| 3534 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
| 3535 JVMWrapper("JVM_AllocateNewObject"); | |
| 3536 JvmtiVMObjectAllocEventCollector oam; | |
| 3537 // Receiver is not used | |
| 3538 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
| 3539 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
| 3540 | |
| 3541 // Cannot instantiate primitive types | |
| 3542 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
| 3543 ResourceMark rm(THREAD); | |
| 3544 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3545 } | |
| 3546 | |
| 3547 // Arrays not allowed here, must use JVM_AllocateNewArray | |
| 6983 | 3548 if (java_lang_Class::as_Klass(curr_mirror)->oop_is_array() || |
| 3549 java_lang_Class::as_Klass(init_mirror)->oop_is_array()) { | |
| 0 | 3550 ResourceMark rm(THREAD); |
| 3551 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3552 } | |
| 3553 | |
|
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diff
changeset
|
3554 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_Klass(curr_mirror)); |
|
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6271
diff
changeset
|
3555 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_Klass(init_mirror)); |
| 0 | 3556 |
| 3557 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
| 3558 | |
| 3559 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
| 3560 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
| 3561 | |
| 3562 // Make sure klass is initialized, since we are about to instantiate one of them. | |
| 3563 curr_klass->initialize(CHECK_NULL); | |
| 3564 | |
| 3565 methodHandle m (THREAD, | |
| 3566 init_klass->find_method(vmSymbols::object_initializer_name(), | |
| 3567 vmSymbols::void_method_signature())); | |
| 3568 if (m.is_null()) { | |
| 3569 ResourceMark rm(THREAD); | |
| 3570 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
| 6983 | 3571 Method::name_and_sig_as_C_string(init_klass(), |
| 0 | 3572 vmSymbols::object_initializer_name(), |
| 3573 vmSymbols::void_method_signature())); | |
| 3574 } | |
| 3575 | |
| 3576 if (curr_klass == init_klass && !m->is_public()) { | |
| 3577 // Calling the constructor for class 'curr_klass'. | |
| 3578 // Only allow calls to a public no-arg constructor. | |
| 3579 // This path corresponds to creating an Externalizable object. | |
| 3580 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3581 } | |
| 3582 | |
| 3583 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
| 3584 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
| 3585 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3586 } | |
| 3587 | |
| 3588 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
| 3589 // Call constructor m. This might call a constructor higher up in the hierachy | |
| 3590 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
| 3591 | |
| 3592 return JNIHandles::make_local(obj()); | |
| 3593 JVM_END | |
| 3594 | |
| 3595 | |
| 3596 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
| 3597 JVMWrapper("JVM_AllocateNewArray"); | |
| 3598 JvmtiVMObjectAllocEventCollector oam; | |
| 3599 oop mirror = JNIHandles::resolve_non_null(currClass); | |
| 3600 | |
| 3601 if (java_lang_Class::is_primitive(mirror)) { | |
| 3602 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3603 } | |
|
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diff
changeset
|
3604 Klass* k = java_lang_Class::as_Klass(mirror); |
| 0 | 3605 oop result; |
| 3606 | |
|
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diff
changeset
|
3607 if (k->oop_is_typeArray()) { |
| 0 | 3608 // typeArray |
|
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6725
diff
changeset
|
3609 result = TypeArrayKlass::cast(k)->allocate(length, CHECK_NULL); |
|
6725
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diff
changeset
|
3610 } else if (k->oop_is_objArray()) { |
| 0 | 3611 // objArray |
|
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6725
diff
changeset
|
3612 ObjArrayKlass* oak = ObjArrayKlass::cast(k); |
| 0 | 3613 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) |
| 3614 result = oak->allocate(length, CHECK_NULL); | |
| 3615 } else { | |
| 3616 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3617 } | |
| 3618 return JNIHandles::make_local(env, result); | |
| 3619 JVM_END | |
| 3620 | |
| 3621 | |
| 3622 // Return the first non-null class loader up the execution stack, or null | |
| 3623 // if only code from the null class loader is on the stack. | |
| 3624 | |
| 3625 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
| 3626 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3627 // UseNewReflection | |
| 3628 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
|
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3629 oop loader = vfst.method()->method_holder()->class_loader(); |
| 0 | 3630 if (loader != NULL) { |
| 3631 return JNIHandles::make_local(env, loader); | |
| 3632 } | |
| 3633 } | |
| 3634 return NULL; | |
| 3635 JVM_END | |
| 3636 | |
| 3637 | |
| 3638 // Load a class relative to the most recent class on the stack with a non-null | |
| 3639 // classloader. | |
| 3640 // This function has been deprecated and should not be considered part of the | |
| 3641 // specified JVM interface. | |
| 3642 | |
| 3643 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
| 3644 jclass currClass, jstring currClassName)) | |
| 3645 JVMWrapper("JVM_LoadClass0"); | |
| 3646 // Receiver is not used | |
| 3647 ResourceMark rm(THREAD); | |
| 3648 | |
| 3649 // Class name argument is not guaranteed to be in internal format | |
| 3650 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
| 3651 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
| 3652 | |
| 3653 const char* str = java_lang_String::as_utf8_string(string()); | |
| 3654 | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
3655 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
| 0 | 3656 // It's impossible to create this class; the name cannot fit |
| 3657 // into the constant pool. | |
| 3658 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
| 3659 } | |
| 3660 | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
2162
diff
changeset
|
3661 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
| 0 | 3662 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
| 3663 // Find the most recent class on the stack with a non-null classloader | |
| 3664 oop loader = NULL; | |
| 3665 oop protection_domain = NULL; | |
| 3666 if (curr_klass.is_null()) { | |
| 3667 for (vframeStream vfst(thread); | |
| 3668 !vfst.at_end() && loader == NULL; | |
| 3669 vfst.next()) { | |
| 3670 if (!vfst.method()->is_native()) { | |
|
6940
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3671 InstanceKlass* holder = vfst.method()->method_holder(); |
|
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3672 loader = holder->class_loader(); |
|
18fb7da42534
8000725: NPG: method_holder() and pool_holder() and pool_holder field should be InstanceKlass
coleenp
parents:
6831
diff
changeset
|
3673 protection_domain = holder->protection_domain(); |
| 0 | 3674 } |
| 3675 } | |
| 3676 } else { | |
|
6725
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coleenp
parents:
6271
diff
changeset
|
3677 Klass* curr_klass_oop = java_lang_Class::as_Klass(curr_klass()); |
|
da91efe96a93
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coleenp
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6271
diff
changeset
|
3678 loader = InstanceKlass::cast(curr_klass_oop)->class_loader(); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3679 protection_domain = InstanceKlass::cast(curr_klass_oop)->protection_domain(); |
| 0 | 3680 } |
| 3681 Handle h_loader(THREAD, loader); | |
| 3682 Handle h_prot (THREAD, protection_domain); | |
|
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3683 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
|
3684 false, thread); |
|
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3685 if (TraceClassResolution && result != NULL) { |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6271
diff
changeset
|
3686 trace_class_resolution(java_lang_Class::as_Klass(JNIHandles::resolve_non_null(result))); |
|
657
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3687 } |
|
715dceaa89b7
6603316: Improve instrumentation for classes loaded at startup
acorn
parents:
579
diff
changeset
|
3688 return result; |
| 0 | 3689 JVM_END |
| 3690 | |
| 3691 | |
| 3692 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
| 3693 | |
| 3694 | |
| 3695 // resolve array handle and check arguments | |
| 3696 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
| 3697 if (arr == NULL) { | |
| 3698 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 3699 } | |
| 3700 oop a = JNIHandles::resolve_non_null(arr); | |
|
6725
da91efe96a93
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diff
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|
3701 if (!a->is_array() || (type_array_only && !a->is_typeArray())) { |
| 0 | 3702 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); |
| 3703 } | |
| 3704 return arrayOop(a); | |
| 3705 } | |
| 3706 | |
| 3707 | |
| 3708 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
| 3709 JVMWrapper("JVM_GetArrayLength"); | |
| 3710 arrayOop a = check_array(env, arr, false, CHECK_0); | |
| 3711 return a->length(); | |
| 3712 JVM_END | |
| 3713 | |
| 3714 | |
| 3715 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
| 3716 JVMWrapper("JVM_Array_Get"); | |
| 3717 JvmtiVMObjectAllocEventCollector oam; | |
| 3718 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
| 3719 jvalue value; | |
| 3720 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
| 3721 oop box = Reflection::box(&value, type, CHECK_NULL); | |
| 3722 return JNIHandles::make_local(env, box); | |
| 3723 JVM_END | |
| 3724 | |
| 3725 | |
| 3726 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
| 3727 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
| 3728 jvalue value; | |
| 3729 value.i = 0; // to initialize value before getting used in CHECK | |
| 3730 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
| 3731 assert(a->is_typeArray(), "just checking"); | |
| 3732 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
| 3733 BasicType wide_type = (BasicType) wCode; | |
| 3734 if (type != wide_type) { | |
| 3735 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
| 3736 } | |
| 3737 return value; | |
| 3738 JVM_END | |
| 3739 | |
| 3740 | |
| 3741 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
| 3742 JVMWrapper("JVM_SetArrayElement"); | |
| 3743 arrayOop a = check_array(env, arr, false, CHECK); | |
| 3744 oop box = JNIHandles::resolve(val); | |
| 3745 jvalue value; | |
| 3746 value.i = 0; // to initialize value before getting used in CHECK | |
| 3747 BasicType value_type; | |
| 3748 if (a->is_objArray()) { | |
| 3749 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
| 3750 value_type = Reflection::unbox_for_regular_object(box, &value); | |
| 3751 } else { | |
| 3752 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
| 3753 } | |
| 3754 Reflection::array_set(&value, a, index, value_type, CHECK); | |
| 3755 JVM_END | |
| 3756 | |
| 3757 | |
| 3758 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
| 3759 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
| 3760 arrayOop a = check_array(env, arr, true, CHECK); | |
| 3761 assert(a->is_typeArray(), "just checking"); | |
| 3762 BasicType value_type = (BasicType) vCode; | |
| 3763 Reflection::array_set(&v, a, index, value_type, CHECK); | |
| 3764 JVM_END | |
| 3765 | |
| 3766 | |
| 3767 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
| 3768 JVMWrapper("JVM_NewArray"); | |
| 3769 JvmtiVMObjectAllocEventCollector oam; | |
| 3770 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3771 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
| 3772 return JNIHandles::make_local(env, result); | |
| 3773 JVM_END | |
| 3774 | |
| 3775 | |
| 3776 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
| 3777 JVMWrapper("JVM_NewMultiArray"); | |
| 3778 JvmtiVMObjectAllocEventCollector oam; | |
| 3779 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
| 3780 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3781 assert(dim_array->is_typeArray(), "just checking"); | |
| 3782 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
| 3783 return JNIHandles::make_local(env, result); | |
| 3784 JVM_END | |
| 3785 | |
| 3786 | |
| 3787 // Networking library support //////////////////////////////////////////////////////////////////// | |
| 3788 | |
| 3789 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
| 3790 JVMWrapper("JVM_InitializeSocketLibrary"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3791 return 0; |
| 0 | 3792 JVM_END |
| 3793 | |
| 3794 | |
| 3795 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
| 3796 JVMWrapper("JVM_Socket"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3797 return os::socket(domain, type, protocol); |
| 0 | 3798 JVM_END |
| 3799 | |
| 3800 | |
| 3801 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
| 3802 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
| 3803 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3804 return os::socket_close(fd); |
| 0 | 3805 JVM_END |
| 3806 | |
| 3807 | |
| 3808 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
| 3809 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
| 3810 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3811 return os::socket_shutdown(fd, howto); |
| 0 | 3812 JVM_END |
| 3813 | |
| 3814 | |
| 3815 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3816 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
| 3817 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3818 return os::recv(fd, buf, (size_t)nBytes, (uint)flags); |
| 0 | 3819 JVM_END |
| 3820 | |
| 3821 | |
| 3822 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3823 JVMWrapper2("JVM_Send (0x%x)", fd); | |
| 3824 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3825 return os::send(fd, buf, (size_t)nBytes, (uint)flags); |
| 0 | 3826 JVM_END |
| 3827 | |
| 3828 | |
| 3829 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
| 3830 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
| 3831 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3832 return os::timeout(fd, timeout); |
| 0 | 3833 JVM_END |
| 3834 | |
| 3835 | |
| 3836 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
| 3837 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
| 3838 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3839 return os::listen(fd, count); |
| 0 | 3840 JVM_END |
| 3841 | |
| 3842 | |
| 3843 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
| 3844 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
| 3845 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3846 return os::connect(fd, him, (socklen_t)len); |
| 0 | 3847 JVM_END |
| 3848 | |
| 3849 | |
| 3850 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
| 3851 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
| 3852 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3853 return os::bind(fd, him, (socklen_t)len); |
| 0 | 3854 JVM_END |
| 3855 | |
| 3856 | |
| 3857 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
| 3858 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
| 3859 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3860 socklen_t socklen = (socklen_t)(*len); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3861 jint result = os::accept(fd, him, &socklen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3862 *len = (jint)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3863 return result; |
| 0 | 3864 JVM_END |
| 3865 | |
| 3866 | |
| 3867 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
| 3868 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
| 3869 //%note jvm_r6 | |
|
4717
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3870 socklen_t socklen = (socklen_t)(*fromlen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
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parents:
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diff
changeset
|
3871 jint result = os::recvfrom(fd, buf, (size_t)nBytes, (uint)flags, from, &socklen); |
|
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7091417: recvfrom's 6th input should be of type socklen_t
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parents:
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diff
changeset
|
3872 *fromlen = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
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parents:
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diff
changeset
|
3873 return result; |
| 0 | 3874 JVM_END |
| 3875 | |
| 3876 | |
| 3877 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
| 3878 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
| 3879 //%note jvm_r6 | |
|
4717
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7091417: recvfrom's 6th input should be of type socklen_t
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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::get_sock_name(fd, him, &socklen); |
|
11c26bfcf8c7
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parents:
4006
diff
changeset
|
3882 *len = (int)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_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
| 3888 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
| 3889 //%note jvm_r6 | |
|
4717
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7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3890 return os::sendto(fd, buf, (size_t)len, (uint)flags, to, (socklen_t)tolen); |
| 0 | 3891 JVM_END |
| 3892 | |
| 3893 | |
| 3894 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
| 3895 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
| 3896 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3897 return os::socket_available(fd, pbytes); |
| 0 | 3898 JVM_END |
| 3899 | |
| 3900 | |
| 3901 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
| 3902 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
| 3903 //%note jvm_r6 | |
|
4717
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7091417: recvfrom's 6th input should be of type socklen_t
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parents:
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diff
changeset
|
3904 socklen_t socklen = (socklen_t)(*optlen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3905 jint result = os::get_sock_opt(fd, level, optname, optval, &socklen); |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3906 *optlen = (int)socklen; |
|
11c26bfcf8c7
7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3907 return result; |
| 0 | 3908 JVM_END |
| 3909 | |
| 3910 | |
| 3911 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
| 3912 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
| 3913 //%note jvm_r6 | |
|
4717
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7091417: recvfrom's 6th input should be of type socklen_t
phh
parents:
4006
diff
changeset
|
3914 return os::set_sock_opt(fd, level, optname, optval, (socklen_t)optlen); |
| 0 | 3915 JVM_END |
| 3916 | |
|
4717
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parents:
4006
diff
changeset
|
3917 |
| 0 | 3918 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) |
| 3919 JVMWrapper("JVM_GetHostName"); | |
|
1980
828eafbd85cc
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ikrylov
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1972
diff
changeset
|
3920 return os::get_host_name(name, namelen); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
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1972
diff
changeset
|
3921 JVM_END |
| 0 | 3922 |
|
4717
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diff
changeset
|
3923 |
| 0 | 3924 // Library support /////////////////////////////////////////////////////////////////////////// |
| 3925 | |
| 3926 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
| 3927 //%note jvm_ct | |
| 3928 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
| 3929 char ebuf[1024]; | |
| 3930 void *load_result; | |
| 3931 { | |
| 3932 ThreadToNativeFromVM ttnfvm(thread); | |
|
1980
828eafbd85cc
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ikrylov
parents:
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diff
changeset
|
3933 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
| 0 | 3934 } |
| 3935 if (load_result == NULL) { | |
| 3936 char msg[1024]; | |
| 3937 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
| 3938 // Since 'ebuf' may contain a string encoded using | |
| 3939 // platform encoding scheme, we need to pass | |
| 3940 // Exceptions::unsafe_to_utf8 to the new_exception method | |
| 3941 // as the last argument. See bug 6367357. | |
| 3942 Handle h_exception = | |
| 3943 Exceptions::new_exception(thread, | |
| 3944 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
| 3945 msg, Exceptions::unsafe_to_utf8); | |
| 3946 | |
| 3947 THROW_HANDLE_0(h_exception); | |
| 3948 } | |
| 3949 return load_result; | |
| 3950 JVM_END | |
| 3951 | |
| 3952 | |
| 3953 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
| 3954 JVMWrapper("JVM_UnloadLibrary"); | |
|
1980
828eafbd85cc
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ikrylov
parents:
1972
diff
changeset
|
3955 os::dll_unload(handle); |
| 0 | 3956 JVM_END |
| 3957 | |
| 3958 | |
| 3959 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
| 3960 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
|
1980
828eafbd85cc
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ikrylov
parents:
1972
diff
changeset
|
3961 return os::dll_lookup(handle, name); |
| 0 | 3962 JVM_END |
| 3963 | |
|
4717
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parents:
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diff
changeset
|
3964 |
| 0 | 3965 // Floating point support //////////////////////////////////////////////////////////////////// |
| 3966 | |
| 3967 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
| 3968 JVMWrapper("JVM_IsNaN"); | |
| 3969 return g_isnan(a); | |
| 3970 JVM_END | |
| 3971 | |
| 3972 | |
| 3973 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
| 3974 | |
| 3975 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
| 3976 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
| 3977 return Threads::is_supported_jni_version_including_1_1(version); | |
| 3978 JVM_END | |
| 3979 | |
| 3980 | |
| 3981 // String support /////////////////////////////////////////////////////////////////////////// | |
| 3982 | |
| 3983 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
| 3984 JVMWrapper("JVM_InternString"); | |
| 3985 JvmtiVMObjectAllocEventCollector oam; | |
| 3986 if (str == NULL) return NULL; | |
| 3987 oop string = JNIHandles::resolve_non_null(str); | |
| 3988 oop result = StringTable::intern(string, CHECK_NULL); | |
| 3989 return (jstring) JNIHandles::make_local(env, result); | |
| 3990 JVM_END | |
| 3991 | |
| 3992 | |
| 3993 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
| 3994 | |
| 3995 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
| 3996 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
| 3997 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
| 3998 // that only works with java threads. | |
| 3999 | |
| 4000 | |
| 4001 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
| 4002 VM_Exit::block_if_vm_exited(); | |
| 4003 JVMWrapper("JVM_RawMonitorCreate"); | |
| 4004 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
| 4005 } | |
| 4006 | |
| 4007 | |
| 4008 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
| 4009 VM_Exit::block_if_vm_exited(); | |
| 4010 JVMWrapper("JVM_RawMonitorDestroy"); | |
| 4011 delete ((Mutex*) mon); | |
| 4012 } | |
| 4013 | |
| 4014 | |
| 4015 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
| 4016 VM_Exit::block_if_vm_exited(); | |
| 4017 JVMWrapper("JVM_RawMonitorEnter"); | |
| 4018 ((Mutex*) mon)->jvm_raw_lock(); | |
| 4019 return 0; | |
| 4020 } | |
| 4021 | |
| 4022 | |
| 4023 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
| 4024 VM_Exit::block_if_vm_exited(); | |
| 4025 JVMWrapper("JVM_RawMonitorExit"); | |
| 4026 ((Mutex*) mon)->jvm_raw_unlock(); | |
| 4027 } | |
| 4028 | |
| 4029 | |
| 4030 // Support for Serialization | |
| 4031 | |
| 4032 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
| 4033 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
| 4034 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
| 4035 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
| 4036 | |
| 4037 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
| 4038 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
| 4039 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
| 4040 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
| 4041 | |
| 4042 | |
| 4043 void initialize_converter_functions() { | |
| 4044 if (JDK_Version::is_gte_jdk14x_version()) { | |
| 4045 // These functions only exist for compatibility with 1.3.1 and earlier | |
| 4046 return; | |
| 4047 } | |
| 4048 | |
| 4049 // called from universe_post_init() | |
| 4050 assert( | |
| 4051 int_bits_to_float_fn == NULL && | |
| 4052 long_bits_to_double_fn == NULL && | |
| 4053 float_to_int_bits_fn == NULL && | |
| 4054 double_to_long_bits_fn == NULL , | |
| 4055 "initialization done twice" | |
| 4056 ); | |
| 4057 // initialize | |
| 4058 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
| 4059 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
| 4060 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
| 4061 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
| 4062 // verify | |
| 4063 assert( | |
| 4064 int_bits_to_float_fn != NULL && | |
| 4065 long_bits_to_double_fn != NULL && | |
| 4066 float_to_int_bits_fn != NULL && | |
| 4067 double_to_long_bits_fn != NULL , | |
| 4068 "initialization failed" | |
| 4069 ); | |
| 4070 } | |
| 4071 | |
| 4072 | |
| 4073 | |
| 4074 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
| 4075 | |
| 18051 | 4076 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, |
| 4077 Handle loader, Handle protection_domain, | |
| 4078 jboolean throwError, TRAPS) { | |
| 0 | 4079 // Security Note: |
| 4080 // The Java level wrapper will perform the necessary security check allowing | |
| 18051 | 4081 // us to pass the NULL as the initiating class loader. The VM is responsible for |
| 4082 // the checkPackageAccess relative to the initiating class loader via the | |
| 4083 // protection_domain. The protection_domain is passed as NULL by the java code | |
| 4084 // if there is no security manager in 3-arg Class.forName(). | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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6271
diff
changeset
|
4085 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
|
4086 |
| 0 | 4087 KlassHandle klass_handle(THREAD, klass); |
| 4088 // Check if we should initialize the class | |
| 4089 if (init && klass_handle->oop_is_instance()) { | |
| 4090 klass_handle->initialize(CHECK_NULL); | |
| 4091 } | |
| 4092 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
| 4093 } | |
| 4094 | |
| 4095 | |
| 4096 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
| 4097 | |
| 4098 #ifndef PRODUCT | |
| 4099 | |
| 4100 extern "C" { | |
| 4101 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
| 4102 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
| 4103 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
| 4104 } | |
| 4105 | |
| 4106 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
| 4107 JVMWrapper("JVM_AccessBoolVMFlag"); | |
|
12322
72b7e96c1922
8024545: make develop and notproduct flag values available in product builds
twisti
parents:
12264
diff
changeset
|
4108 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, Flag::INTERNAL); |
| 0 | 4109 JVM_END |
| 4110 | |
| 4111 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
| 4112 JVMWrapper("JVM_AccessVMIntFlag"); | |
| 4113 intx v; | |
|
12322
72b7e96c1922
8024545: make develop and notproduct flag values available in product builds
twisti
parents:
12264
diff
changeset
|
4114 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, Flag::INTERNAL); |
| 0 | 4115 *value = (jint)v; |
| 4116 return result; | |
| 4117 JVM_END | |
| 4118 | |
| 4119 | |
| 4120 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
| 4121 JVMWrapper("JVM_VMBreakPoint"); | |
| 4122 oop the_obj = JNIHandles::resolve(obj); | |
| 4123 BREAKPOINT; | |
| 4124 JVM_END | |
| 4125 | |
| 4126 | |
| 4127 #endif | |
| 4128 | |
| 4129 | |
| 4130 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4131 | |
| 4132 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
| 4133 JVMWrapper("JVM_InvokeMethod"); | |
| 4134 Handle method_handle; | |
| 4135 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
| 4136 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
| 4137 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
| 4138 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4139 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
| 4140 jobject res = JNIHandles::make_local(env, result); | |
| 4141 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4142 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
| 4143 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
| 4144 if (java_lang_Class::is_primitive(ret_type)) { | |
| 4145 // Only for primitive type vm allocates memory for java object. | |
| 4146 // See box() method. | |
| 4147 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4148 } | |
| 4149 } | |
| 4150 return res; | |
| 4151 } else { | |
| 4152 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
| 4153 } | |
| 4154 JVM_END | |
| 4155 | |
| 4156 | |
| 4157 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
| 4158 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
| 4159 oop constructor_mirror = JNIHandles::resolve(c); | |
| 4160 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4161 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
| 4162 jobject res = JNIHandles::make_local(env, result); | |
| 4163 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4164 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4165 } | |
| 4166 return res; | |
| 4167 JVM_END | |
| 4168 | |
| 4169 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4170 | |
| 4171 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
| 4172 JVMWrapper("JVM_SupportsCX8"); | |
| 4173 return VM_Version::supports_cx8(); | |
| 4174 JVM_END | |
| 4175 | |
| 4176 | |
| 4177 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
| 4178 JVMWrapper("JVM_CX8Field"); | |
| 4179 jlong res; | |
| 4180 oop o = JNIHandles::resolve(obj); | |
| 4181 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 4182 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
| 4183 | |
| 4184 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
| 4185 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
| 4186 | |
| 4187 return res == oldVal; | |
| 4188 JVM_END | |
| 4189 | |
|
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|
4190 // DTrace /////////////////////////////////////////////////////////////////// |
|
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diff
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|
4191 |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
4192 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
|
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6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
4193 JVMWrapper("JVM_DTraceGetVersion"); |
|
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6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
4194 return (jint)JVM_TRACING_DTRACE_VERSION; |
|
018d5b58dd4f
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diff
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|
4195 JVM_END |
|
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6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
4196 |
|
018d5b58dd4f
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diff
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|
4197 JVM_ENTRY(jlong,JVM_DTraceActivate( |
|
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6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
4198 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
4199 JVM_DTraceProvider* providers)) |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
changeset
|
4200 JVMWrapper("JVM_DTraceActivate"); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
4201 return DTraceJSDT::activate( |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
4202 version, module_name, providers_count, providers, CHECK_0); |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
4203 JVM_END |
|
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6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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diff
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|
4204 |
|
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4205 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
|
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4206 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
|
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4207 return DTraceJSDT::is_probe_enabled(method); |
|
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4208 JVM_END |
|
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|
4209 |
|
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|
4210 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
|
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4211 JVMWrapper("JVM_DTraceDispose"); |
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4212 DTraceJSDT::dispose(handle); |
|
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4213 JVM_END |
|
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4214 |
|
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|
4215 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
|
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4216 JVMWrapper("JVM_DTraceIsSupported"); |
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4217 return DTraceJSDT::is_supported(); |
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4218 JVM_END |
|
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4219 |
| 0 | 4220 // Returns an array of all live Thread objects (VM internal JavaThreads, |
| 4221 // jvmti agent threads, and JNI attaching threads are skipped) | |
| 4222 // See CR 6404306 regarding JNI attaching threads | |
| 4223 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
| 4224 ResourceMark rm(THREAD); | |
| 4225 ThreadsListEnumerator tle(THREAD, false, false); | |
| 4226 JvmtiVMObjectAllocEventCollector oam; | |
| 4227 | |
| 4228 int num_threads = tle.num_threads(); | |
| 1142 | 4229 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
| 0 | 4230 objArrayHandle threads_ah(THREAD, r); |
| 4231 | |
| 4232 for (int i = 0; i < num_threads; i++) { | |
| 4233 Handle h = tle.get_threadObj(i); | |
| 4234 threads_ah->obj_at_put(i, h()); | |
| 4235 } | |
| 4236 | |
| 4237 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
| 4238 JVM_END | |
| 4239 | |
| 4240 | |
| 4241 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
| 4242 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
| 4243 // the corresponding entry in the given threads array | |
| 4244 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
| 4245 JVMWrapper("JVM_DumpThreads"); | |
| 4246 JvmtiVMObjectAllocEventCollector oam; | |
| 4247 | |
| 4248 // Check if threads is null | |
| 4249 if (threads == NULL) { | |
| 4250 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4251 } | |
| 4252 | |
| 4253 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
| 4254 objArrayHandle ah(THREAD, a); | |
| 4255 int num_threads = ah->length(); | |
| 4256 // check if threads is non-empty array | |
| 4257 if (num_threads == 0) { | |
| 4258 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
| 4259 } | |
| 4260 | |
| 4261 // check if threads is not an array of objects of Thread class | |
|
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|
4262 Klass* k = ObjArrayKlass::cast(ah->klass())->element_klass(); |
| 1142 | 4263 if (k != SystemDictionary::Thread_klass()) { |
| 0 | 4264 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
| 4265 } | |
| 4266 | |
| 4267 ResourceMark rm(THREAD); | |
| 4268 | |
| 4269 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
| 4270 for (int i = 0; i < num_threads; i++) { | |
| 4271 oop thread_obj = ah->obj_at(i); | |
| 4272 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
| 4273 thread_handle_array->append(h); | |
| 4274 } | |
| 4275 | |
| 4276 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
| 4277 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
| 4278 | |
| 4279 JVM_END | |
| 4280 | |
| 4281 // JVM monitoring and management support | |
| 4282 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
| 4283 return Management::get_jmm_interface(version); | |
| 4284 JVM_END | |
| 4285 | |
| 4286 // com.sun.tools.attach.VirtualMachine agent properties support | |
| 4287 // | |
| 4288 // Initialize the agent properties with the properties maintained in the VM | |
| 4289 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
| 4290 JVMWrapper("JVM_InitAgentProperties"); | |
| 4291 ResourceMark rm; | |
| 4292 | |
| 4293 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
| 4294 | |
| 4295 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
| 4296 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
| 4297 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
| 4298 return properties; | |
| 4299 JVM_END | |
| 4300 | |
| 4301 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
| 4302 { | |
| 4303 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
| 4304 JvmtiVMObjectAllocEventCollector oam; | |
| 4305 | |
| 4306 if (ofClass == NULL) { | |
| 4307 return NULL; | |
| 4308 } | |
| 4309 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
| 4310 // Special handling for primitive objects | |
| 4311 if (java_lang_Class::is_primitive(mirror())) { | |
| 4312 return NULL; | |
| 4313 } | |
|
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4314 Klass* k = java_lang_Class::as_Klass(mirror()); |
| 6983 | 4315 if (!k->oop_is_instance()) { |
| 0 | 4316 return NULL; |
| 4317 } | |
| 4318 instanceKlassHandle ik_h(THREAD, k); | |
| 4319 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
| 4320 if (encl_method_class_idx == 0) { | |
| 4321 return NULL; | |
| 4322 } | |
| 1142 | 4323 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
| 0 | 4324 objArrayHandle dest(THREAD, dest_o); |
|
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4325 Klass* enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); |
| 6983 | 4326 dest->obj_at_put(0, enc_k->java_mirror()); |
| 0 | 4327 int encl_method_method_idx = ik_h->enclosing_method_method_index(); |
| 4328 if (encl_method_method_idx != 0) { | |
|
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|
4329 Symbol* sym = ik_h->constants()->symbol_at( |
| 0 | 4330 extract_low_short_from_int( |
| 4331 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4332 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4333 dest->obj_at_put(1, str()); | |
|
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|
4334 sym = ik_h->constants()->symbol_at( |
| 0 | 4335 extract_high_short_from_int( |
| 4336 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4337 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4338 dest->obj_at_put(2, str()); | |
| 4339 } | |
| 4340 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 4341 } | |
| 4342 JVM_END | |
| 4343 | |
| 4344 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
| 4345 jint javaThreadState)) | |
| 4346 { | |
| 4347 // If new thread states are added in future JDK and VM versions, | |
| 4348 // this should check if the JDK version is compatible with thread | |
| 4349 // states supported by the VM. Return NULL if not compatible. | |
| 4350 // | |
| 4351 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4352 // to the Java thread state that the JDK supports. | |
| 4353 // | |
| 4354 | |
| 4355 typeArrayHandle values_h; | |
| 4356 switch (javaThreadState) { | |
| 4357 case JAVA_THREAD_STATE_NEW : { | |
| 4358 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4359 values_h = typeArrayHandle(THREAD, r); | |
| 4360 values_h->int_at_put(0, java_lang_Thread::NEW); | |
| 4361 break; | |
| 4362 } | |
| 4363 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4364 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4365 values_h = typeArrayHandle(THREAD, r); | |
| 4366 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
| 4367 break; | |
| 4368 } | |
| 4369 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4370 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4371 values_h = typeArrayHandle(THREAD, r); | |
| 4372 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
| 4373 break; | |
| 4374 } | |
| 4375 case JAVA_THREAD_STATE_WAITING : { | |
| 4376 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
| 4377 values_h = typeArrayHandle(THREAD, r); | |
| 4378 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
| 4379 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
| 4380 break; | |
| 4381 } | |
| 4382 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4383 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
| 4384 values_h = typeArrayHandle(THREAD, r); | |
| 4385 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
| 4386 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
| 4387 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
| 4388 break; | |
| 4389 } | |
| 4390 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4391 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4392 values_h = typeArrayHandle(THREAD, r); | |
| 4393 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
| 4394 break; | |
| 4395 } | |
| 4396 default: | |
| 4397 // Unknown state - probably incompatible JDK version | |
| 4398 return NULL; | |
| 4399 } | |
| 4400 | |
| 4401 return (jintArray) JNIHandles::make_local(env, values_h()); | |
| 4402 } | |
| 4403 JVM_END | |
| 4404 | |
| 4405 | |
| 4406 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
| 4407 jint javaThreadState, | |
| 4408 jintArray values)) | |
| 4409 { | |
| 4410 // If new thread states are added in future JDK and VM versions, | |
| 4411 // this should check if the JDK version is compatible with thread | |
| 4412 // states supported by the VM. Return NULL if not compatible. | |
| 4413 // | |
| 4414 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4415 // to the Java thread state that the JDK supports. | |
| 4416 // | |
| 4417 | |
| 4418 ResourceMark rm; | |
| 4419 | |
| 4420 // Check if threads is null | |
| 4421 if (values == NULL) { | |
| 4422 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4423 } | |
| 4424 | |
| 4425 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
| 4426 typeArrayHandle values_h(THREAD, v); | |
| 4427 | |
| 4428 objArrayHandle names_h; | |
| 4429 switch (javaThreadState) { | |
| 4430 case JAVA_THREAD_STATE_NEW : { | |
| 4431 assert(values_h->length() == 1 && | |
| 4432 values_h->int_at(0) == java_lang_Thread::NEW, | |
| 4433 "Invalid threadStatus value"); | |
| 4434 | |
| 1142 | 4435 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4436 1, /* only 1 substate */ |
| 4437 CHECK_NULL); | |
| 4438 names_h = objArrayHandle(THREAD, r); | |
| 4439 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
| 4440 names_h->obj_at_put(0, name()); | |
| 4441 break; | |
| 4442 } | |
| 4443 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4444 assert(values_h->length() == 1 && | |
| 4445 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
| 4446 "Invalid threadStatus value"); | |
| 4447 | |
| 1142 | 4448 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4449 1, /* only 1 substate */ |
| 4450 CHECK_NULL); | |
| 4451 names_h = objArrayHandle(THREAD, r); | |
| 4452 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
| 4453 names_h->obj_at_put(0, name()); | |
| 4454 break; | |
| 4455 } | |
| 4456 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4457 assert(values_h->length() == 1 && | |
| 4458 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
| 4459 "Invalid threadStatus value"); | |
| 4460 | |
| 1142 | 4461 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4462 1, /* only 1 substate */ |
| 4463 CHECK_NULL); | |
| 4464 names_h = objArrayHandle(THREAD, r); | |
| 4465 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
| 4466 names_h->obj_at_put(0, name()); | |
| 4467 break; | |
| 4468 } | |
| 4469 case JAVA_THREAD_STATE_WAITING : { | |
| 4470 assert(values_h->length() == 2 && | |
| 4471 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
| 4472 values_h->int_at(1) == java_lang_Thread::PARKED, | |
| 4473 "Invalid threadStatus value"); | |
| 1142 | 4474 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4475 2, /* number of substates */ |
| 4476 CHECK_NULL); | |
| 4477 names_h = objArrayHandle(THREAD, r); | |
| 4478 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
| 4479 CHECK_NULL); | |
| 4480 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
| 4481 CHECK_NULL); | |
| 4482 names_h->obj_at_put(0, name0()); | |
| 4483 names_h->obj_at_put(1, name1()); | |
| 4484 break; | |
| 4485 } | |
| 4486 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4487 assert(values_h->length() == 3 && | |
| 4488 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
| 4489 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
| 4490 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
| 4491 "Invalid threadStatus value"); | |
| 1142 | 4492 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4493 3, /* number of substates */ |
| 4494 CHECK_NULL); | |
| 4495 names_h = objArrayHandle(THREAD, r); | |
| 4496 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
| 4497 CHECK_NULL); | |
| 4498 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
| 4499 CHECK_NULL); | |
| 4500 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
| 4501 CHECK_NULL); | |
| 4502 names_h->obj_at_put(0, name0()); | |
| 4503 names_h->obj_at_put(1, name1()); | |
| 4504 names_h->obj_at_put(2, name2()); | |
| 4505 break; | |
| 4506 } | |
| 4507 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4508 assert(values_h->length() == 1 && | |
| 4509 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
| 4510 "Invalid threadStatus value"); | |
| 1142 | 4511 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4512 1, /* only 1 substate */ |
| 4513 CHECK_NULL); | |
| 4514 names_h = objArrayHandle(THREAD, r); | |
| 4515 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
| 4516 names_h->obj_at_put(0, name()); | |
| 4517 break; | |
| 4518 } | |
| 4519 default: | |
| 4520 // Unknown state - probably incompatible JDK version | |
| 4521 return NULL; | |
| 4522 } | |
| 4523 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
| 4524 } | |
| 4525 JVM_END | |
| 4526 | |
| 4527 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
| 4528 { | |
| 4529 memset(info, 0, sizeof(info_size)); | |
| 4530 | |
| 4531 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
| 4532 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4533 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4534 | |
| 4535 // when we add a new capability in the jvm_version_info struct, we should also | |
| 4536 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
| 4537 // counter defined in runtimeService.cpp. | |
| 4538 info->is_attachable = AttachListener::is_attach_supported(); | |
| 4539 } | |
| 4540 JVM_END |