Mercurial > hg > truffle
annotate src/share/vm/prims/jvm.cpp @ 3960:f08d439fab8c
7089790: integrate bsd-port changes
Reviewed-by: kvn, twisti, jrose
Contributed-by: Kurt Miller <kurt@intricatesoftware.com>, Greg Lewis <glewis@eyesbeyond.com>, Jung-uk Kim <jkim@freebsd.org>, Christos Zoulas <christos@zoulas.com>, Landon Fuller <landonf@plausible.coop>, The FreeBSD Foundation <board@freebsdfoundation.org>, Michael Franz <mvfranz@gmail.com>, Roger Hoover <rhoover@apple.com>, Alexander Strange <astrange@apple.com>
| author | never |
|---|---|
| date | Sun, 25 Sep 2011 16:03:29 -0700 |
| parents | e6b1331a51d2 |
| children | 436b4a3231bf |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "classfile/classLoader.hpp" | |
| 27 #include "classfile/javaAssertions.hpp" | |
| 28 #include "classfile/javaClasses.hpp" | |
| 29 #include "classfile/symbolTable.hpp" | |
| 30 #include "classfile/systemDictionary.hpp" | |
| 31 #include "classfile/vmSymbols.hpp" | |
| 32 #include "gc_interface/collectedHeap.inline.hpp" | |
| 33 #include "memory/oopFactory.hpp" | |
| 34 #include "memory/universe.inline.hpp" | |
| 3938 | 35 #include "oops/fieldStreams.hpp" |
| 1972 | 36 #include "oops/instanceKlass.hpp" |
| 37 #include "oops/objArrayKlass.hpp" | |
| 38 #include "prims/jvm.h" | |
| 39 #include "prims/jvm_misc.hpp" | |
| 40 #include "prims/jvmtiExport.hpp" | |
| 41 #include "prims/jvmtiThreadState.hpp" | |
| 42 #include "prims/nativeLookup.hpp" | |
| 43 #include "prims/privilegedStack.hpp" | |
| 44 #include "runtime/arguments.hpp" | |
| 45 #include "runtime/dtraceJSDT.hpp" | |
| 46 #include "runtime/handles.inline.hpp" | |
| 47 #include "runtime/init.hpp" | |
| 48 #include "runtime/interfaceSupport.hpp" | |
| 49 #include "runtime/java.hpp" | |
| 50 #include "runtime/javaCalls.hpp" | |
| 51 #include "runtime/jfieldIDWorkaround.hpp" | |
| 52 #include "runtime/os.hpp" | |
| 53 #include "runtime/perfData.hpp" | |
| 54 #include "runtime/reflection.hpp" | |
| 55 #include "runtime/vframe.hpp" | |
| 56 #include "runtime/vm_operations.hpp" | |
| 57 #include "services/attachListener.hpp" | |
| 58 #include "services/management.hpp" | |
| 59 #include "services/threadService.hpp" | |
| 60 #include "utilities/copy.hpp" | |
| 61 #include "utilities/defaultStream.hpp" | |
| 62 #include "utilities/dtrace.hpp" | |
| 63 #include "utilities/events.hpp" | |
| 64 #include "utilities/histogram.hpp" | |
| 65 #include "utilities/top.hpp" | |
| 66 #include "utilities/utf8.hpp" | |
| 67 #ifdef TARGET_OS_FAMILY_linux | |
| 68 # include "jvm_linux.h" | |
| 69 #endif | |
| 70 #ifdef TARGET_OS_FAMILY_solaris | |
| 71 # include "jvm_solaris.h" | |
| 72 #endif | |
| 73 #ifdef TARGET_OS_FAMILY_windows | |
| 74 # include "jvm_windows.h" | |
| 75 #endif | |
| 3960 | 76 #ifdef TARGET_OS_FAMILY_bsd |
| 77 # include "jvm_bsd.h" | |
| 78 #endif | |
| 1972 | 79 |
| 0 | 80 #include <errno.h> |
| 81 | |
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82 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__begin, long long); |
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83 HS_DTRACE_PROBE_DECL1(hotspot, thread__sleep__end, int); |
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84 HS_DTRACE_PROBE_DECL0(hotspot, thread__yield); |
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85 |
| 0 | 86 /* |
| 87 NOTE about use of any ctor or function call that can trigger a safepoint/GC: | |
| 88 such ctors and calls MUST NOT come between an oop declaration/init and its | |
| 89 usage because if objects are move this may cause various memory stomps, bus | |
| 90 errors and segfaults. Here is a cookbook for causing so called "naked oop | |
| 91 failures": | |
| 92 | |
| 93 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields<etc> { | |
| 94 JVMWrapper("JVM_GetClassDeclaredFields"); | |
| 95 | |
| 96 // Object address to be held directly in mirror & not visible to GC | |
| 97 oop mirror = JNIHandles::resolve_non_null(ofClass); | |
| 98 | |
| 99 // If this ctor can hit a safepoint, moving objects around, then | |
| 100 ComplexConstructor foo; | |
| 101 | |
| 102 // Boom! mirror may point to JUNK instead of the intended object | |
| 103 (some dereference of mirror) | |
| 104 | |
| 105 // Here's another call that may block for GC, making mirror stale | |
| 106 MutexLocker ml(some_lock); | |
| 107 | |
| 108 // And here's an initializer that can result in a stale oop | |
| 109 // all in one step. | |
| 110 oop o = call_that_can_throw_exception(TRAPS); | |
| 111 | |
| 112 | |
| 113 The solution is to keep the oop declaration BELOW the ctor or function | |
| 114 call that might cause a GC, do another resolve to reassign the oop, or | |
| 115 consider use of a Handle instead of an oop so there is immunity from object | |
| 116 motion. But note that the "QUICK" entries below do not have a handlemark | |
| 117 and thus can only support use of handles passed in. | |
| 118 */ | |
| 119 | |
| 120 static void trace_class_resolution_impl(klassOop to_class, TRAPS) { | |
| 121 ResourceMark rm; | |
| 122 int line_number = -1; | |
| 123 const char * source_file = NULL; | |
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124 const char * trace = "explicit"; |
| 0 | 125 klassOop caller = NULL; |
| 126 JavaThread* jthread = JavaThread::current(); | |
| 127 if (jthread->has_last_Java_frame()) { | |
| 128 vframeStream vfst(jthread); | |
| 129 | |
| 130 // scan up the stack skipping ClassLoader, AccessController and PrivilegedAction frames | |
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131 TempNewSymbol access_controller = SymbolTable::new_symbol("java/security/AccessController", CHECK); |
| 0 | 132 klassOop access_controller_klass = SystemDictionary::resolve_or_fail(access_controller, false, CHECK); |
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133 TempNewSymbol privileged_action = SymbolTable::new_symbol("java/security/PrivilegedAction", CHECK); |
| 0 | 134 klassOop privileged_action_klass = SystemDictionary::resolve_or_fail(privileged_action, false, CHECK); |
| 135 | |
| 136 methodOop last_caller = NULL; | |
| 137 | |
| 138 while (!vfst.at_end()) { | |
| 139 methodOop m = vfst.method(); | |
| 1142 | 140 if (!vfst.method()->method_holder()->klass_part()->is_subclass_of(SystemDictionary::ClassLoader_klass())&& |
| 0 | 141 !vfst.method()->method_holder()->klass_part()->is_subclass_of(access_controller_klass) && |
| 142 !vfst.method()->method_holder()->klass_part()->is_subclass_of(privileged_action_klass)) { | |
| 143 break; | |
| 144 } | |
| 145 last_caller = m; | |
| 146 vfst.next(); | |
| 147 } | |
| 148 // if this is called from Class.forName0 and that is called from Class.forName, | |
| 149 // then print the caller of Class.forName. If this is Class.loadClass, then print | |
| 150 // that caller, otherwise keep quiet since this should be picked up elsewhere. | |
| 151 bool found_it = false; | |
| 152 if (!vfst.at_end() && | |
| 153 instanceKlass::cast(vfst.method()->method_holder())->name() == vmSymbols::java_lang_Class() && | |
| 154 vfst.method()->name() == vmSymbols::forName0_name()) { | |
| 155 vfst.next(); | |
| 156 if (!vfst.at_end() && | |
| 157 instanceKlass::cast(vfst.method()->method_holder())->name() == vmSymbols::java_lang_Class() && | |
| 158 vfst.method()->name() == vmSymbols::forName_name()) { | |
| 159 vfst.next(); | |
| 160 found_it = true; | |
| 161 } | |
| 162 } else if (last_caller != NULL && | |
| 163 instanceKlass::cast(last_caller->method_holder())->name() == | |
| 164 vmSymbols::java_lang_ClassLoader() && | |
| 165 (last_caller->name() == vmSymbols::loadClassInternal_name() || | |
| 166 last_caller->name() == vmSymbols::loadClass_name())) { | |
| 167 found_it = true; | |
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168 } else if (!vfst.at_end()) { |
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169 if (vfst.method()->is_native()) { |
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170 // JNI call |
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171 found_it = true; |
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172 } |
| 0 | 173 } |
| 174 if (found_it && !vfst.at_end()) { | |
| 175 // found the caller | |
| 176 caller = vfst.method()->method_holder(); | |
| 177 line_number = vfst.method()->line_number_from_bci(vfst.bci()); | |
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178 if (line_number == -1) { |
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179 // show method name if it's a native method |
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180 trace = vfst.method()->name_and_sig_as_C_string(); |
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181 } |
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182 Symbol* s = instanceKlass::cast(caller)->source_file_name(); |
| 0 | 183 if (s != NULL) { |
| 184 source_file = s->as_C_string(); | |
| 185 } | |
| 186 } | |
| 187 } | |
| 188 if (caller != NULL) { | |
| 189 if (to_class != caller) { | |
| 190 const char * from = Klass::cast(caller)->external_name(); | |
| 191 const char * to = Klass::cast(to_class)->external_name(); | |
| 192 // print in a single call to reduce interleaving between threads | |
| 193 if (source_file != NULL) { | |
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194 tty->print("RESOLVE %s %s %s:%d (%s)\n", from, to, source_file, line_number, trace); |
| 0 | 195 } else { |
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196 tty->print("RESOLVE %s %s (%s)\n", from, to, trace); |
| 0 | 197 } |
| 198 } | |
| 199 } | |
| 200 } | |
| 201 | |
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202 void trace_class_resolution(klassOop to_class) { |
| 0 | 203 EXCEPTION_MARK; |
| 204 trace_class_resolution_impl(to_class, THREAD); | |
| 205 if (HAS_PENDING_EXCEPTION) { | |
| 206 CLEAR_PENDING_EXCEPTION; | |
| 207 } | |
| 208 } | |
| 209 | |
| 210 // Wrapper to trace JVM functions | |
| 211 | |
| 212 #ifdef ASSERT | |
| 213 class JVMTraceWrapper : public StackObj { | |
| 214 public: | |
| 215 JVMTraceWrapper(const char* format, ...) { | |
| 216 if (TraceJVMCalls) { | |
| 217 va_list ap; | |
| 218 va_start(ap, format); | |
| 219 tty->print("JVM "); | |
| 220 tty->vprint_cr(format, ap); | |
| 221 va_end(ap); | |
| 222 } | |
| 223 } | |
| 224 }; | |
| 225 | |
| 226 Histogram* JVMHistogram; | |
| 227 volatile jint JVMHistogram_lock = 0; | |
| 228 | |
| 229 class JVMHistogramElement : public HistogramElement { | |
| 230 public: | |
| 231 JVMHistogramElement(const char* name); | |
| 232 }; | |
| 233 | |
| 234 JVMHistogramElement::JVMHistogramElement(const char* elementName) { | |
| 235 _name = elementName; | |
| 236 uintx count = 0; | |
| 237 | |
| 238 while (Atomic::cmpxchg(1, &JVMHistogram_lock, 0) != 0) { | |
| 239 while (OrderAccess::load_acquire(&JVMHistogram_lock) != 0) { | |
| 240 count +=1; | |
| 241 if ( (WarnOnStalledSpinLock > 0) | |
| 242 && (count % WarnOnStalledSpinLock == 0)) { | |
| 243 warning("JVMHistogram_lock seems to be stalled"); | |
| 244 } | |
| 245 } | |
| 246 } | |
| 247 | |
| 248 if(JVMHistogram == NULL) | |
| 249 JVMHistogram = new Histogram("JVM Call Counts",100); | |
| 250 | |
| 251 JVMHistogram->add_element(this); | |
| 252 Atomic::dec(&JVMHistogram_lock); | |
| 253 } | |
| 254 | |
| 255 #define JVMCountWrapper(arg) \ | |
| 256 static JVMHistogramElement* e = new JVMHistogramElement(arg); \ | |
| 257 if (e != NULL) e->increment_count(); // Due to bug in VC++, we need a NULL check here eventhough it should never happen! | |
| 258 | |
| 259 #define JVMWrapper(arg1) JVMCountWrapper(arg1); JVMTraceWrapper(arg1) | |
| 260 #define JVMWrapper2(arg1, arg2) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2) | |
| 261 #define JVMWrapper3(arg1, arg2, arg3) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3) | |
| 262 #define JVMWrapper4(arg1, arg2, arg3, arg4) JVMCountWrapper(arg1); JVMTraceWrapper(arg1, arg2, arg3, arg4) | |
| 263 #else | |
| 264 #define JVMWrapper(arg1) | |
| 265 #define JVMWrapper2(arg1, arg2) | |
| 266 #define JVMWrapper3(arg1, arg2, arg3) | |
| 267 #define JVMWrapper4(arg1, arg2, arg3, arg4) | |
| 268 #endif | |
| 269 | |
| 270 | |
| 271 // Interface version ///////////////////////////////////////////////////////////////////// | |
| 272 | |
| 273 | |
| 274 JVM_LEAF(jint, JVM_GetInterfaceVersion()) | |
| 275 return JVM_INTERFACE_VERSION; | |
| 276 JVM_END | |
| 277 | |
| 278 | |
| 279 // java.lang.System ////////////////////////////////////////////////////////////////////// | |
| 280 | |
| 281 | |
| 282 JVM_LEAF(jlong, JVM_CurrentTimeMillis(JNIEnv *env, jclass ignored)) | |
| 283 JVMWrapper("JVM_CurrentTimeMillis"); | |
| 284 return os::javaTimeMillis(); | |
| 285 JVM_END | |
| 286 | |
| 287 JVM_LEAF(jlong, JVM_NanoTime(JNIEnv *env, jclass ignored)) | |
| 288 JVMWrapper("JVM_NanoTime"); | |
| 289 return os::javaTimeNanos(); | |
| 290 JVM_END | |
| 291 | |
| 292 | |
| 293 JVM_ENTRY(void, JVM_ArrayCopy(JNIEnv *env, jclass ignored, jobject src, jint src_pos, | |
| 294 jobject dst, jint dst_pos, jint length)) | |
| 295 JVMWrapper("JVM_ArrayCopy"); | |
| 296 // Check if we have null pointers | |
| 297 if (src == NULL || dst == NULL) { | |
| 298 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 299 } | |
| 300 arrayOop s = arrayOop(JNIHandles::resolve_non_null(src)); | |
| 301 arrayOop d = arrayOop(JNIHandles::resolve_non_null(dst)); | |
| 302 assert(s->is_oop(), "JVM_ArrayCopy: src not an oop"); | |
| 303 assert(d->is_oop(), "JVM_ArrayCopy: dst not an oop"); | |
| 304 // Do copy | |
| 305 Klass::cast(s->klass())->copy_array(s, src_pos, d, dst_pos, length, thread); | |
| 306 JVM_END | |
| 307 | |
| 308 | |
| 309 static void set_property(Handle props, const char* key, const char* value, TRAPS) { | |
| 310 JavaValue r(T_OBJECT); | |
| 311 // public synchronized Object put(Object key, Object value); | |
| 312 HandleMark hm(THREAD); | |
| 313 Handle key_str = java_lang_String::create_from_platform_dependent_str(key, CHECK); | |
| 314 Handle value_str = java_lang_String::create_from_platform_dependent_str((value != NULL ? value : ""), CHECK); | |
| 315 JavaCalls::call_virtual(&r, | |
| 316 props, | |
| 1142 | 317 KlassHandle(THREAD, SystemDictionary::Properties_klass()), |
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318 vmSymbols::put_name(), |
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319 vmSymbols::object_object_object_signature(), |
| 0 | 320 key_str, |
| 321 value_str, | |
| 322 THREAD); | |
| 323 } | |
| 324 | |
| 325 | |
| 326 #define PUTPROP(props, name, value) set_property((props), (name), (value), CHECK_(properties)); | |
| 327 | |
| 328 | |
| 329 JVM_ENTRY(jobject, JVM_InitProperties(JNIEnv *env, jobject properties)) | |
| 330 JVMWrapper("JVM_InitProperties"); | |
| 331 ResourceMark rm; | |
| 332 | |
| 333 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
| 334 | |
| 335 // System property list includes both user set via -D option and | |
| 336 // jvm system specific properties. | |
| 337 for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) { | |
| 338 PUTPROP(props, p->key(), p->value()); | |
| 339 } | |
| 340 | |
| 341 // Convert the -XX:MaxDirectMemorySize= command line flag | |
| 342 // to the sun.nio.MaxDirectMemorySize property. | |
| 343 // Do this after setting user properties to prevent people | |
| 344 // from setting the value with a -D option, as requested. | |
| 345 { | |
| 346 char as_chars[256]; | |
| 347 jio_snprintf(as_chars, sizeof(as_chars), INTX_FORMAT, MaxDirectMemorySize); | |
| 348 PUTPROP(props, "sun.nio.MaxDirectMemorySize", as_chars); | |
| 349 } | |
| 350 | |
| 351 // JVM monitoring and management support | |
| 352 // Add the sun.management.compiler property for the compiler's name | |
| 353 { | |
| 354 #undef CSIZE | |
| 355 #if defined(_LP64) || defined(_WIN64) | |
| 356 #define CSIZE "64-Bit " | |
| 357 #else | |
| 358 #define CSIZE | |
| 359 #endif // 64bit | |
| 360 | |
| 361 #ifdef TIERED | |
| 362 const char* compiler_name = "HotSpot " CSIZE "Tiered Compilers"; | |
| 363 #else | |
| 364 #if defined(COMPILER1) | |
| 365 const char* compiler_name = "HotSpot " CSIZE "Client Compiler"; | |
| 366 #elif defined(COMPILER2) | |
| 367 const char* compiler_name = "HotSpot " CSIZE "Server Compiler"; | |
| 368 #else | |
| 369 const char* compiler_name = ""; | |
| 370 #endif // compilers | |
| 371 #endif // TIERED | |
| 372 | |
| 373 if (*compiler_name != '\0' && | |
| 374 (Arguments::mode() != Arguments::_int)) { | |
| 375 PUTPROP(props, "sun.management.compiler", compiler_name); | |
| 376 } | |
| 377 } | |
| 378 | |
| 379 return properties; | |
| 380 JVM_END | |
| 381 | |
| 382 | |
| 383 // java.lang.Runtime ///////////////////////////////////////////////////////////////////////// | |
| 384 | |
| 385 extern volatile jint vm_created; | |
| 386 | |
| 387 JVM_ENTRY_NO_ENV(void, JVM_Exit(jint code)) | |
| 388 if (vm_created != 0 && (code == 0)) { | |
| 389 // The VM is about to exit. We call back into Java to check whether finalizers should be run | |
| 390 Universe::run_finalizers_on_exit(); | |
| 391 } | |
| 392 before_exit(thread); | |
| 393 vm_exit(code); | |
| 394 JVM_END | |
| 395 | |
| 396 | |
| 397 JVM_ENTRY_NO_ENV(void, JVM_Halt(jint code)) | |
| 398 before_exit(thread); | |
| 399 vm_exit(code); | |
| 400 JVM_END | |
| 401 | |
| 402 | |
| 403 JVM_LEAF(void, JVM_OnExit(void (*func)(void))) | |
| 404 register_on_exit_function(func); | |
| 405 JVM_END | |
| 406 | |
| 407 | |
| 408 JVM_ENTRY_NO_ENV(void, JVM_GC(void)) | |
| 409 JVMWrapper("JVM_GC"); | |
| 410 if (!DisableExplicitGC) { | |
| 411 Universe::heap()->collect(GCCause::_java_lang_system_gc); | |
| 412 } | |
| 413 JVM_END | |
| 414 | |
| 415 | |
| 416 JVM_LEAF(jlong, JVM_MaxObjectInspectionAge(void)) | |
| 417 JVMWrapper("JVM_MaxObjectInspectionAge"); | |
| 418 return Universe::heap()->millis_since_last_gc(); | |
| 419 JVM_END | |
| 420 | |
| 421 | |
| 422 JVM_LEAF(void, JVM_TraceInstructions(jboolean on)) | |
| 423 if (PrintJVMWarnings) warning("JVM_TraceInstructions not supported"); | |
| 424 JVM_END | |
| 425 | |
| 426 | |
| 427 JVM_LEAF(void, JVM_TraceMethodCalls(jboolean on)) | |
| 428 if (PrintJVMWarnings) warning("JVM_TraceMethodCalls not supported"); | |
| 429 JVM_END | |
| 430 | |
| 431 static inline jlong convert_size_t_to_jlong(size_t val) { | |
| 432 // In the 64-bit vm, a size_t can overflow a jlong (which is signed). | |
| 433 NOT_LP64 (return (jlong)val;) | |
| 434 LP64_ONLY(return (jlong)MIN2(val, (size_t)max_jlong);) | |
| 435 } | |
| 436 | |
| 437 JVM_ENTRY_NO_ENV(jlong, JVM_TotalMemory(void)) | |
| 438 JVMWrapper("JVM_TotalMemory"); | |
| 439 size_t n = Universe::heap()->capacity(); | |
| 440 return convert_size_t_to_jlong(n); | |
| 441 JVM_END | |
| 442 | |
| 443 | |
| 444 JVM_ENTRY_NO_ENV(jlong, JVM_FreeMemory(void)) | |
| 445 JVMWrapper("JVM_FreeMemory"); | |
| 446 CollectedHeap* ch = Universe::heap(); | |
|
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447 size_t n; |
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448 { |
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449 MutexLocker x(Heap_lock); |
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450 n = ch->capacity() - ch->used(); |
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451 } |
| 0 | 452 return convert_size_t_to_jlong(n); |
| 453 JVM_END | |
| 454 | |
| 455 | |
| 456 JVM_ENTRY_NO_ENV(jlong, JVM_MaxMemory(void)) | |
| 457 JVMWrapper("JVM_MaxMemory"); | |
| 458 size_t n = Universe::heap()->max_capacity(); | |
| 459 return convert_size_t_to_jlong(n); | |
| 460 JVM_END | |
| 461 | |
| 462 | |
| 463 JVM_ENTRY_NO_ENV(jint, JVM_ActiveProcessorCount(void)) | |
| 464 JVMWrapper("JVM_ActiveProcessorCount"); | |
| 465 return os::active_processor_count(); | |
| 466 JVM_END | |
| 467 | |
| 468 | |
| 469 | |
| 470 // java.lang.Throwable ////////////////////////////////////////////////////// | |
| 471 | |
| 472 | |
| 473 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver)) | |
| 474 JVMWrapper("JVM_FillInStackTrace"); | |
| 475 Handle exception(thread, JNIHandles::resolve_non_null(receiver)); | |
| 476 java_lang_Throwable::fill_in_stack_trace(exception); | |
| 477 JVM_END | |
| 478 | |
| 479 | |
| 480 JVM_ENTRY(void, JVM_PrintStackTrace(JNIEnv *env, jobject receiver, jobject printable)) | |
| 481 JVMWrapper("JVM_PrintStackTrace"); | |
| 482 // Note: This is no longer used in Merlin, but we still support it for compatibility. | |
| 483 oop exception = JNIHandles::resolve_non_null(receiver); | |
| 484 oop stream = JNIHandles::resolve_non_null(printable); | |
| 485 java_lang_Throwable::print_stack_trace(exception, stream); | |
| 486 JVM_END | |
| 487 | |
| 488 | |
| 489 JVM_ENTRY(jint, JVM_GetStackTraceDepth(JNIEnv *env, jobject throwable)) | |
| 490 JVMWrapper("JVM_GetStackTraceDepth"); | |
| 491 oop exception = JNIHandles::resolve(throwable); | |
| 492 return java_lang_Throwable::get_stack_trace_depth(exception, THREAD); | |
| 493 JVM_END | |
| 494 | |
| 495 | |
| 496 JVM_ENTRY(jobject, JVM_GetStackTraceElement(JNIEnv *env, jobject throwable, jint index)) | |
| 497 JVMWrapper("JVM_GetStackTraceElement"); | |
| 498 JvmtiVMObjectAllocEventCollector oam; // This ctor (throughout this module) may trigger a safepoint/GC | |
| 499 oop exception = JNIHandles::resolve(throwable); | |
| 500 oop element = java_lang_Throwable::get_stack_trace_element(exception, index, CHECK_NULL); | |
| 501 return JNIHandles::make_local(env, element); | |
| 502 JVM_END | |
| 503 | |
| 504 | |
| 505 // java.lang.Object /////////////////////////////////////////////// | |
| 506 | |
| 507 | |
| 508 JVM_ENTRY(jint, JVM_IHashCode(JNIEnv* env, jobject handle)) | |
| 509 JVMWrapper("JVM_IHashCode"); | |
| 510 // as implemented in the classic virtual machine; return 0 if object is NULL | |
| 511 return handle == NULL ? 0 : ObjectSynchronizer::FastHashCode (THREAD, JNIHandles::resolve_non_null(handle)) ; | |
| 512 JVM_END | |
| 513 | |
| 514 | |
| 515 JVM_ENTRY(void, JVM_MonitorWait(JNIEnv* env, jobject handle, jlong ms)) | |
| 516 JVMWrapper("JVM_MonitorWait"); | |
| 517 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 518 assert(obj->is_instance() || obj->is_array(), "JVM_MonitorWait must apply to an object"); | |
| 519 JavaThreadInObjectWaitState jtiows(thread, ms != 0); | |
| 520 if (JvmtiExport::should_post_monitor_wait()) { | |
| 521 JvmtiExport::post_monitor_wait((JavaThread *)THREAD, (oop)obj(), ms); | |
| 522 } | |
| 523 ObjectSynchronizer::wait(obj, ms, CHECK); | |
| 524 JVM_END | |
| 525 | |
| 526 | |
| 527 JVM_ENTRY(void, JVM_MonitorNotify(JNIEnv* env, jobject handle)) | |
| 528 JVMWrapper("JVM_MonitorNotify"); | |
| 529 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 530 assert(obj->is_instance() || obj->is_array(), "JVM_MonitorNotify must apply to an object"); | |
| 531 ObjectSynchronizer::notify(obj, CHECK); | |
| 532 JVM_END | |
| 533 | |
| 534 | |
| 535 JVM_ENTRY(void, JVM_MonitorNotifyAll(JNIEnv* env, jobject handle)) | |
| 536 JVMWrapper("JVM_MonitorNotifyAll"); | |
| 537 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 538 assert(obj->is_instance() || obj->is_array(), "JVM_MonitorNotifyAll must apply to an object"); | |
| 539 ObjectSynchronizer::notifyall(obj, CHECK); | |
| 540 JVM_END | |
| 541 | |
| 542 | |
| 543 JVM_ENTRY(jobject, JVM_Clone(JNIEnv* env, jobject handle)) | |
| 544 JVMWrapper("JVM_Clone"); | |
| 545 Handle obj(THREAD, JNIHandles::resolve_non_null(handle)); | |
| 546 const KlassHandle klass (THREAD, obj->klass()); | |
| 547 JvmtiVMObjectAllocEventCollector oam; | |
| 548 | |
| 549 #ifdef ASSERT | |
| 550 // Just checking that the cloneable flag is set correct | |
| 551 if (obj->is_javaArray()) { | |
| 552 guarantee(klass->is_cloneable(), "all arrays are cloneable"); | |
| 553 } else { | |
| 554 guarantee(obj->is_instance(), "should be instanceOop"); | |
| 1142 | 555 bool cloneable = klass->is_subtype_of(SystemDictionary::Cloneable_klass()); |
| 0 | 556 guarantee(cloneable == klass->is_cloneable(), "incorrect cloneable flag"); |
| 557 } | |
| 558 #endif | |
| 559 | |
| 560 // Check if class of obj supports the Cloneable interface. | |
| 561 // All arrays are considered to be cloneable (See JLS 20.1.5) | |
| 562 if (!klass->is_cloneable()) { | |
| 563 ResourceMark rm(THREAD); | |
| 564 THROW_MSG_0(vmSymbols::java_lang_CloneNotSupportedException(), klass->external_name()); | |
| 565 } | |
| 566 | |
| 567 // Make shallow object copy | |
| 568 const int size = obj->size(); | |
| 569 oop new_obj = NULL; | |
| 570 if (obj->is_javaArray()) { | |
| 571 const int length = ((arrayOop)obj())->length(); | |
| 572 new_obj = CollectedHeap::array_allocate(klass, size, length, CHECK_NULL); | |
| 573 } else { | |
| 574 new_obj = CollectedHeap::obj_allocate(klass, size, CHECK_NULL); | |
| 575 } | |
| 576 // 4839641 (4840070): We must do an oop-atomic copy, because if another thread | |
| 577 // is modifying a reference field in the clonee, a non-oop-atomic copy might | |
| 578 // be suspended in the middle of copying the pointer and end up with parts | |
| 579 // of two different pointers in the field. Subsequent dereferences will crash. | |
| 580 // 4846409: an oop-copy of objects with long or double fields or arrays of same | |
| 581 // won't copy the longs/doubles atomically in 32-bit vm's, so we copy jlongs instead | |
| 582 // of oops. We know objects are aligned on a minimum of an jlong boundary. | |
| 583 // The same is true of StubRoutines::object_copy and the various oop_copy | |
| 584 // variants, and of the code generated by the inline_native_clone intrinsic. | |
| 585 assert(MinObjAlignmentInBytes >= BytesPerLong, "objects misaligned"); | |
| 586 Copy::conjoint_jlongs_atomic((jlong*)obj(), (jlong*)new_obj, | |
| 587 (size_t)align_object_size(size) / HeapWordsPerLong); | |
| 588 // Clear the header | |
| 589 new_obj->init_mark(); | |
| 590 | |
| 591 // Store check (mark entire object and let gc sort it out) | |
| 592 BarrierSet* bs = Universe::heap()->barrier_set(); | |
| 593 assert(bs->has_write_region_opt(), "Barrier set does not have write_region"); | |
| 594 bs->write_region(MemRegion((HeapWord*)new_obj, size)); | |
| 595 | |
| 596 // Caution: this involves a java upcall, so the clone should be | |
| 597 // "gc-robust" by this stage. | |
| 598 if (klass->has_finalizer()) { | |
| 599 assert(obj->is_instance(), "should be instanceOop"); | |
| 600 new_obj = instanceKlass::register_finalizer(instanceOop(new_obj), CHECK_NULL); | |
| 601 } | |
| 602 | |
| 603 return JNIHandles::make_local(env, oop(new_obj)); | |
| 604 JVM_END | |
| 605 | |
| 606 // java.lang.Compiler //////////////////////////////////////////////////// | |
| 607 | |
| 608 // The initial cuts of the HotSpot VM will not support JITs, and all existing | |
| 609 // JITs would need extensive changes to work with HotSpot. The JIT-related JVM | |
| 610 // functions are all silently ignored unless JVM warnings are printed. | |
| 611 | |
| 612 JVM_LEAF(void, JVM_InitializeCompiler (JNIEnv *env, jclass compCls)) | |
| 613 if (PrintJVMWarnings) warning("JVM_InitializeCompiler not supported"); | |
| 614 JVM_END | |
| 615 | |
| 616 | |
| 617 JVM_LEAF(jboolean, JVM_IsSilentCompiler(JNIEnv *env, jclass compCls)) | |
| 618 if (PrintJVMWarnings) warning("JVM_IsSilentCompiler not supported"); | |
| 619 return JNI_FALSE; | |
| 620 JVM_END | |
| 621 | |
| 622 | |
| 623 JVM_LEAF(jboolean, JVM_CompileClass(JNIEnv *env, jclass compCls, jclass cls)) | |
| 624 if (PrintJVMWarnings) warning("JVM_CompileClass not supported"); | |
| 625 return JNI_FALSE; | |
| 626 JVM_END | |
| 627 | |
| 628 | |
| 629 JVM_LEAF(jboolean, JVM_CompileClasses(JNIEnv *env, jclass cls, jstring jname)) | |
| 630 if (PrintJVMWarnings) warning("JVM_CompileClasses not supported"); | |
| 631 return JNI_FALSE; | |
| 632 JVM_END | |
| 633 | |
| 634 | |
| 635 JVM_LEAF(jobject, JVM_CompilerCommand(JNIEnv *env, jclass compCls, jobject arg)) | |
| 636 if (PrintJVMWarnings) warning("JVM_CompilerCommand not supported"); | |
| 637 return NULL; | |
| 638 JVM_END | |
| 639 | |
| 640 | |
| 641 JVM_LEAF(void, JVM_EnableCompiler(JNIEnv *env, jclass compCls)) | |
| 642 if (PrintJVMWarnings) warning("JVM_EnableCompiler not supported"); | |
| 643 JVM_END | |
| 644 | |
| 645 | |
| 646 JVM_LEAF(void, JVM_DisableCompiler(JNIEnv *env, jclass compCls)) | |
| 647 if (PrintJVMWarnings) warning("JVM_DisableCompiler not supported"); | |
| 648 JVM_END | |
| 649 | |
| 650 | |
| 651 | |
| 652 // Error message support ////////////////////////////////////////////////////// | |
| 653 | |
| 654 JVM_LEAF(jint, JVM_GetLastErrorString(char *buf, int len)) | |
| 655 JVMWrapper("JVM_GetLastErrorString"); | |
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656 return (jint)os::lasterror(buf, len); |
| 0 | 657 JVM_END |
| 658 | |
| 659 | |
| 660 // java.io.File /////////////////////////////////////////////////////////////// | |
| 661 | |
| 662 JVM_LEAF(char*, JVM_NativePath(char* path)) | |
| 663 JVMWrapper2("JVM_NativePath (%s)", path); | |
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664 return os::native_path(path); |
| 0 | 665 JVM_END |
| 666 | |
| 667 | |
| 668 // Misc. class handling /////////////////////////////////////////////////////////// | |
| 669 | |
| 670 | |
| 671 JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) | |
| 672 JVMWrapper("JVM_GetCallerClass"); | |
| 673 klassOop k = thread->security_get_caller_class(depth); | |
| 674 return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); | |
| 675 JVM_END | |
| 676 | |
| 677 | |
| 678 JVM_ENTRY(jclass, JVM_FindPrimitiveClass(JNIEnv* env, const char* utf)) | |
| 679 JVMWrapper("JVM_FindPrimitiveClass"); | |
| 680 oop mirror = NULL; | |
| 681 BasicType t = name2type(utf); | |
| 682 if (t != T_ILLEGAL && t != T_OBJECT && t != T_ARRAY) { | |
| 683 mirror = Universe::java_mirror(t); | |
| 684 } | |
| 685 if (mirror == NULL) { | |
| 686 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), (char*) utf); | |
| 687 } else { | |
| 688 return (jclass) JNIHandles::make_local(env, mirror); | |
| 689 } | |
| 690 JVM_END | |
| 691 | |
| 692 | |
| 693 JVM_ENTRY(void, JVM_ResolveClass(JNIEnv* env, jclass cls)) | |
| 694 JVMWrapper("JVM_ResolveClass"); | |
| 695 if (PrintJVMWarnings) warning("JVM_ResolveClass not implemented"); | |
| 696 JVM_END | |
| 697 | |
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698 |
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699 // Returns a class loaded by the bootstrap class loader; or null |
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700 // if not found. ClassNotFoundException is not thrown. |
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701 // |
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702 // Rationale behind JVM_FindClassFromBootLoader |
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703 // a> JVM_FindClassFromClassLoader was never exported in the export tables. |
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704 // b> because of (a) java.dll has a direct dependecy on the unexported |
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705 // private symbol "_JVM_FindClassFromClassLoader@20". |
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706 // c> the launcher cannot use the private symbol as it dynamically opens |
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707 // the entry point, so if something changes, the launcher will fail |
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708 // unexpectedly at runtime, it is safest for the launcher to dlopen a |
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709 // stable exported interface. |
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710 // d> re-exporting JVM_FindClassFromClassLoader as public, will cause its |
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711 // signature to change from _JVM_FindClassFromClassLoader@20 to |
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712 // JVM_FindClassFromClassLoader and will not be backward compatible |
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713 // with older JDKs. |
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714 // Thus a public/stable exported entry point is the right solution, |
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715 // public here means public in linker semantics, and is exported only |
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716 // to the JDK, and is not intended to be a public API. |
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717 |
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718 JVM_ENTRY(jclass, JVM_FindClassFromBootLoader(JNIEnv* env, |
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719 const char* name)) |
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720 JVMWrapper2("JVM_FindClassFromBootLoader %s", name); |
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721 |
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722 // Java libraries should ensure that name is never null... |
|
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723 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
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724 // It's impossible to create this class; the name cannot fit |
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725 // into the constant pool. |
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726 return NULL; |
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727 } |
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728 |
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729 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
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730 klassOop k = SystemDictionary::resolve_or_null(h_name, CHECK_NULL); |
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731 if (k == NULL) { |
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732 return NULL; |
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|
733 } |
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734 |
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735 if (TraceClassResolution) { |
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736 trace_class_resolution(k); |
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737 } |
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738 return (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); |
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739 JVM_END |
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740 |
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741 JVM_ENTRY(jclass, JVM_FindClassFromClassLoader(JNIEnv* env, const char* name, |
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742 jboolean init, jobject loader, |
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743 jboolean throwError)) |
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744 JVMWrapper3("JVM_FindClassFromClassLoader %s throw %s", name, |
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745 throwError ? "error" : "exception"); |
| 388 | 746 // Java libraries should ensure that name is never null... |
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747 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
| 388 | 748 // It's impossible to create this class; the name cannot fit |
| 749 // into the constant pool. | |
| 750 if (throwError) { | |
| 751 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 752 } else { | |
| 753 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), name); | |
| 754 } | |
| 755 } | |
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756 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
| 388 | 757 Handle h_loader(THREAD, JNIHandles::resolve(loader)); |
| 758 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 759 Handle(), throwError, THREAD); | |
| 760 | |
| 761 if (TraceClassResolution && result != NULL) { | |
| 762 trace_class_resolution(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(result))); | |
| 763 } | |
| 764 return result; | |
| 0 | 765 JVM_END |
| 766 | |
| 767 | |
| 768 JVM_ENTRY(jclass, JVM_FindClassFromClass(JNIEnv *env, const char *name, | |
| 769 jboolean init, jclass from)) | |
| 770 JVMWrapper2("JVM_FindClassFromClass %s", name); | |
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771 if (name == NULL || (int)strlen(name) > Symbol::max_length()) { |
| 0 | 772 // It's impossible to create this class; the name cannot fit |
| 773 // into the constant pool. | |
| 774 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 775 } | |
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776 TempNewSymbol h_name = SymbolTable::new_symbol(name, CHECK_NULL); |
| 0 | 777 oop from_class_oop = JNIHandles::resolve(from); |
| 778 klassOop from_class = (from_class_oop == NULL) | |
| 779 ? (klassOop)NULL | |
| 780 : java_lang_Class::as_klassOop(from_class_oop); | |
| 781 oop class_loader = NULL; | |
| 782 oop protection_domain = NULL; | |
| 783 if (from_class != NULL) { | |
| 784 class_loader = Klass::cast(from_class)->class_loader(); | |
| 785 protection_domain = Klass::cast(from_class)->protection_domain(); | |
| 786 } | |
| 787 Handle h_loader(THREAD, class_loader); | |
| 788 Handle h_prot (THREAD, protection_domain); | |
| 789 jclass result = find_class_from_class_loader(env, h_name, init, h_loader, | |
| 790 h_prot, true, thread); | |
| 791 | |
| 792 if (TraceClassResolution && result != NULL) { | |
| 793 // this function is generally only used for class loading during verification. | |
| 794 ResourceMark rm; | |
| 795 oop from_mirror = JNIHandles::resolve_non_null(from); | |
| 796 klassOop from_class = java_lang_Class::as_klassOop(from_mirror); | |
| 797 const char * from_name = Klass::cast(from_class)->external_name(); | |
| 798 | |
| 799 oop mirror = JNIHandles::resolve_non_null(result); | |
| 800 klassOop to_class = java_lang_Class::as_klassOop(mirror); | |
| 801 const char * to = Klass::cast(to_class)->external_name(); | |
| 802 tty->print("RESOLVE %s %s (verification)\n", from_name, to); | |
| 803 } | |
| 804 | |
| 805 return result; | |
| 806 JVM_END | |
| 807 | |
| 808 static void is_lock_held_by_thread(Handle loader, PerfCounter* counter, TRAPS) { | |
| 809 if (loader.is_null()) { | |
| 810 return; | |
| 811 } | |
| 812 | |
| 813 // check whether the current caller thread holds the lock or not. | |
| 814 // If not, increment the corresponding counter | |
| 815 if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader) != | |
| 816 ObjectSynchronizer::owner_self) { | |
| 817 counter->inc(); | |
| 818 } | |
| 819 } | |
| 820 | |
| 821 // common code for JVM_DefineClass() and JVM_DefineClassWithSource() | |
|
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822 // and JVM_DefineClassWithSourceCond() |
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823 static jclass jvm_define_class_common(JNIEnv *env, const char *name, |
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824 jobject loader, const jbyte *buf, |
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825 jsize len, jobject pd, const char *source, |
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826 jboolean verify, TRAPS) { |
|
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827 if (source == NULL) source = "__JVM_DefineClass__"; |
| 0 | 828 |
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829 assert(THREAD->is_Java_thread(), "must be a JavaThread"); |
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830 JavaThread* jt = (JavaThread*) THREAD; |
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831 |
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832 PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), |
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833 ClassLoader::perf_define_appclass_selftime(), |
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834 ClassLoader::perf_define_appclasses(), |
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835 jt->get_thread_stat()->perf_recursion_counts_addr(), |
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836 jt->get_thread_stat()->perf_timers_addr(), |
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837 PerfClassTraceTime::DEFINE_CLASS); |
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838 |
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839 if (UsePerfData) { |
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840 ClassLoader::perf_app_classfile_bytes_read()->inc(len); |
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841 } |
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842 |
| 0 | 843 // Since exceptions can be thrown, class initialization can take place |
| 844 // if name is NULL no check for class name in .class stream has to be made. | |
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845 TempNewSymbol class_name = NULL; |
| 0 | 846 if (name != NULL) { |
| 847 const int str_len = (int)strlen(name); | |
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848 if (str_len > Symbol::max_length()) { |
| 0 | 849 // It's impossible to create this class; the name cannot fit |
| 850 // into the constant pool. | |
| 851 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), name); | |
| 852 } | |
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853 class_name = SymbolTable::new_symbol(name, str_len, CHECK_NULL); |
| 0 | 854 } |
| 855 | |
| 856 ResourceMark rm(THREAD); | |
| 857 ClassFileStream st((u1*) buf, len, (char *)source); | |
| 858 Handle class_loader (THREAD, JNIHandles::resolve(loader)); | |
| 859 if (UsePerfData) { | |
| 860 is_lock_held_by_thread(class_loader, | |
| 861 ClassLoader::sync_JVMDefineClassLockFreeCounter(), | |
| 862 THREAD); | |
| 863 } | |
| 864 Handle protection_domain (THREAD, JNIHandles::resolve(pd)); | |
| 865 klassOop k = SystemDictionary::resolve_from_stream(class_name, class_loader, | |
| 866 protection_domain, &st, | |
|
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867 verify != 0, |
| 0 | 868 CHECK_NULL); |
| 869 | |
| 870 if (TraceClassResolution && k != NULL) { | |
| 871 trace_class_resolution(k); | |
| 872 } | |
| 873 | |
| 874 return (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); | |
| 875 } | |
| 876 | |
| 877 | |
| 878 JVM_ENTRY(jclass, JVM_DefineClass(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd)) | |
| 879 JVMWrapper2("JVM_DefineClass %s", name); | |
| 880 | |
|
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881 return jvm_define_class_common(env, name, loader, buf, len, pd, NULL, true, THREAD); |
| 0 | 882 JVM_END |
| 883 | |
| 884 | |
| 885 JVM_ENTRY(jclass, JVM_DefineClassWithSource(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source)) | |
| 886 JVMWrapper2("JVM_DefineClassWithSource %s", name); | |
| 887 | |
|
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888 return jvm_define_class_common(env, name, loader, buf, len, pd, source, true, THREAD); |
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889 JVM_END |
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890 |
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891 JVM_ENTRY(jclass, JVM_DefineClassWithSourceCond(JNIEnv *env, const char *name, |
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892 jobject loader, const jbyte *buf, |
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893 jsize len, jobject pd, |
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894 const char *source, jboolean verify)) |
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895 JVMWrapper2("JVM_DefineClassWithSourceCond %s", name); |
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896 |
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897 return jvm_define_class_common(env, name, loader, buf, len, pd, source, verify, THREAD); |
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898 JVM_END |
| 0 | 899 |
| 900 JVM_ENTRY(jclass, JVM_FindLoadedClass(JNIEnv *env, jobject loader, jstring name)) | |
| 901 JVMWrapper("JVM_FindLoadedClass"); | |
| 902 ResourceMark rm(THREAD); | |
| 903 | |
| 904 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 905 Handle string = java_lang_String::internalize_classname(h_name, CHECK_NULL); | |
| 906 | |
| 907 const char* str = java_lang_String::as_utf8_string(string()); | |
| 908 // Sanity check, don't expect null | |
| 909 if (str == NULL) return NULL; | |
| 910 | |
| 911 const int str_len = (int)strlen(str); | |
|
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912 if (str_len > Symbol::max_length()) { |
| 0 | 913 // It's impossible to create this class; the name cannot fit |
| 914 // into the constant pool. | |
| 915 return NULL; | |
| 916 } | |
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917 TempNewSymbol klass_name = SymbolTable::new_symbol(str, str_len, CHECK_NULL); |
| 0 | 918 |
| 919 // Security Note: | |
| 920 // The Java level wrapper will perform the necessary security check allowing | |
| 921 // us to pass the NULL as the initiating class loader. | |
| 922 Handle h_loader(THREAD, JNIHandles::resolve(loader)); | |
| 923 if (UsePerfData) { | |
| 924 is_lock_held_by_thread(h_loader, | |
| 925 ClassLoader::sync_JVMFindLoadedClassLockFreeCounter(), | |
| 926 THREAD); | |
| 927 } | |
| 928 | |
| 929 klassOop k = SystemDictionary::find_instance_or_array_klass(klass_name, | |
| 930 h_loader, | |
| 931 Handle(), | |
| 932 CHECK_NULL); | |
| 933 | |
| 934 return (k == NULL) ? NULL : | |
| 935 (jclass) JNIHandles::make_local(env, Klass::cast(k)->java_mirror()); | |
| 936 JVM_END | |
| 937 | |
| 938 | |
| 939 // Reflection support ////////////////////////////////////////////////////////////////////////////// | |
| 940 | |
| 941 JVM_ENTRY(jstring, JVM_GetClassName(JNIEnv *env, jclass cls)) | |
| 942 assert (cls != NULL, "illegal class"); | |
| 943 JVMWrapper("JVM_GetClassName"); | |
| 944 JvmtiVMObjectAllocEventCollector oam; | |
| 945 ResourceMark rm(THREAD); | |
| 946 const char* name; | |
| 947 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 948 name = type2name(java_lang_Class::primitive_type(JNIHandles::resolve(cls))); | |
| 949 } else { | |
| 950 // Consider caching interned string in Klass | |
| 951 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
| 952 assert(k->is_klass(), "just checking"); | |
| 953 name = Klass::cast(k)->external_name(); | |
| 954 } | |
| 955 oop result = StringTable::intern((char*) name, CHECK_NULL); | |
| 956 return (jstring) JNIHandles::make_local(env, result); | |
| 957 JVM_END | |
| 958 | |
| 959 | |
| 960 JVM_ENTRY(jobjectArray, JVM_GetClassInterfaces(JNIEnv *env, jclass cls)) | |
| 961 JVMWrapper("JVM_GetClassInterfaces"); | |
| 962 JvmtiVMObjectAllocEventCollector oam; | |
| 963 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 964 | |
| 965 // Special handling for primitive objects | |
| 966 if (java_lang_Class::is_primitive(mirror)) { | |
| 967 // Primitive objects does not have any interfaces | |
| 1142 | 968 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 969 return (jobjectArray) JNIHandles::make_local(env, r); |
| 970 } | |
| 971 | |
| 972 KlassHandle klass(thread, java_lang_Class::as_klassOop(mirror)); | |
| 973 // Figure size of result array | |
| 974 int size; | |
| 975 if (klass->oop_is_instance()) { | |
| 976 size = instanceKlass::cast(klass())->local_interfaces()->length(); | |
| 977 } else { | |
| 978 assert(klass->oop_is_objArray() || klass->oop_is_typeArray(), "Illegal mirror klass"); | |
| 979 size = 2; | |
| 980 } | |
| 981 | |
| 982 // Allocate result array | |
| 1142 | 983 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), size, CHECK_NULL); |
| 0 | 984 objArrayHandle result (THREAD, r); |
| 985 // Fill in result | |
| 986 if (klass->oop_is_instance()) { | |
| 987 // Regular instance klass, fill in all local interfaces | |
| 988 for (int index = 0; index < size; index++) { | |
| 989 klassOop k = klassOop(instanceKlass::cast(klass())->local_interfaces()->obj_at(index)); | |
| 990 result->obj_at_put(index, Klass::cast(k)->java_mirror()); | |
| 991 } | |
| 992 } else { | |
| 993 // All arrays implement java.lang.Cloneable and java.io.Serializable | |
| 1142 | 994 result->obj_at_put(0, Klass::cast(SystemDictionary::Cloneable_klass())->java_mirror()); |
| 995 result->obj_at_put(1, Klass::cast(SystemDictionary::Serializable_klass())->java_mirror()); | |
| 0 | 996 } |
| 997 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 998 JVM_END | |
| 999 | |
| 1000 | |
| 1001 JVM_ENTRY(jobject, JVM_GetClassLoader(JNIEnv *env, jclass cls)) | |
| 1002 JVMWrapper("JVM_GetClassLoader"); | |
| 1003 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1004 return NULL; | |
| 1005 } | |
| 1006 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 1007 oop loader = Klass::cast(k)->class_loader(); | |
| 1008 return JNIHandles::make_local(env, loader); | |
| 1009 JVM_END | |
| 1010 | |
| 1011 | |
| 1012 JVM_QUICK_ENTRY(jboolean, JVM_IsInterface(JNIEnv *env, jclass cls)) | |
| 1013 JVMWrapper("JVM_IsInterface"); | |
| 1014 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1015 if (java_lang_Class::is_primitive(mirror)) { | |
| 1016 return JNI_FALSE; | |
| 1017 } | |
| 1018 klassOop k = java_lang_Class::as_klassOop(mirror); | |
| 1019 jboolean result = Klass::cast(k)->is_interface(); | |
| 1020 assert(!result || Klass::cast(k)->oop_is_instance(), | |
| 1021 "all interfaces are instance types"); | |
| 1022 // The compiler intrinsic for isInterface tests the | |
| 1023 // Klass::_access_flags bits in the same way. | |
| 1024 return result; | |
| 1025 JVM_END | |
| 1026 | |
| 1027 | |
| 1028 JVM_ENTRY(jobjectArray, JVM_GetClassSigners(JNIEnv *env, jclass cls)) | |
| 1029 JVMWrapper("JVM_GetClassSigners"); | |
| 1030 JvmtiVMObjectAllocEventCollector oam; | |
| 1031 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1032 // There are no signers for primitive types | |
| 1033 return NULL; | |
| 1034 } | |
| 1035 | |
| 1036 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 1037 objArrayOop signers = NULL; | |
| 1038 if (Klass::cast(k)->oop_is_instance()) { | |
| 1039 signers = instanceKlass::cast(k)->signers(); | |
| 1040 } | |
| 1041 | |
| 1042 // If there are no signers set in the class, or if the class | |
| 1043 // is an array, return NULL. | |
| 1044 if (signers == NULL) return NULL; | |
| 1045 | |
| 1046 // copy of the signers array | |
| 1047 klassOop element = objArrayKlass::cast(signers->klass())->element_klass(); | |
| 1048 objArrayOop signers_copy = oopFactory::new_objArray(element, signers->length(), CHECK_NULL); | |
| 1049 for (int index = 0; index < signers->length(); index++) { | |
| 1050 signers_copy->obj_at_put(index, signers->obj_at(index)); | |
| 1051 } | |
| 1052 | |
| 1053 // return the copy | |
| 1054 return (jobjectArray) JNIHandles::make_local(env, signers_copy); | |
| 1055 JVM_END | |
| 1056 | |
| 1057 | |
| 1058 JVM_ENTRY(void, JVM_SetClassSigners(JNIEnv *env, jclass cls, jobjectArray signers)) | |
| 1059 JVMWrapper("JVM_SetClassSigners"); | |
| 1060 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1061 // This call is ignored for primitive types and arrays. | |
| 1062 // Signers are only set once, ClassLoader.java, and thus shouldn't | |
| 1063 // be called with an array. Only the bootstrap loader creates arrays. | |
| 1064 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 1065 if (Klass::cast(k)->oop_is_instance()) { | |
| 1066 instanceKlass::cast(k)->set_signers(objArrayOop(JNIHandles::resolve(signers))); | |
| 1067 } | |
| 1068 } | |
| 1069 JVM_END | |
| 1070 | |
| 1071 | |
| 1072 JVM_ENTRY(jobject, JVM_GetProtectionDomain(JNIEnv *env, jclass cls)) | |
| 1073 JVMWrapper("JVM_GetProtectionDomain"); | |
| 1074 if (JNIHandles::resolve(cls) == NULL) { | |
| 1075 THROW_(vmSymbols::java_lang_NullPointerException(), NULL); | |
| 1076 } | |
| 1077 | |
| 1078 if (java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1079 // Primitive types does not have a protection domain. | |
| 1080 return NULL; | |
| 1081 } | |
| 1082 | |
| 1083 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
| 1084 return (jobject) JNIHandles::make_local(env, Klass::cast(k)->protection_domain()); | |
| 1085 JVM_END | |
| 1086 | |
| 1087 | |
| 1088 // Obsolete since 1.2 (Class.setProtectionDomain removed), although | |
| 1089 // still defined in core libraries as of 1.5. | |
| 1090 JVM_ENTRY(void, JVM_SetProtectionDomain(JNIEnv *env, jclass cls, jobject protection_domain)) | |
| 1091 JVMWrapper("JVM_SetProtectionDomain"); | |
| 1092 if (JNIHandles::resolve(cls) == NULL) { | |
| 1093 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 1094 } | |
| 1095 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1096 // Call is ignored for primitive types | |
| 1097 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
| 1098 | |
| 1099 // cls won't be an array, as this called only from ClassLoader.defineClass | |
| 1100 if (Klass::cast(k)->oop_is_instance()) { | |
| 1101 oop pd = JNIHandles::resolve(protection_domain); | |
| 1102 assert(pd == NULL || pd->is_oop(), "just checking"); | |
| 1103 instanceKlass::cast(k)->set_protection_domain(pd); | |
| 1104 } | |
| 1105 } | |
| 1106 JVM_END | |
| 1107 | |
| 1108 | |
| 1109 JVM_ENTRY(jobject, JVM_DoPrivileged(JNIEnv *env, jclass cls, jobject action, jobject context, jboolean wrapException)) | |
| 1110 JVMWrapper("JVM_DoPrivileged"); | |
| 1111 | |
| 1112 if (action == NULL) { | |
| 1113 THROW_MSG_0(vmSymbols::java_lang_NullPointerException(), "Null action"); | |
| 1114 } | |
| 1115 | |
| 1116 // Stack allocated list of privileged stack elements | |
| 1117 PrivilegedElement pi; | |
| 1118 | |
| 1119 // Check that action object understands "Object run()" | |
| 1120 Handle object (THREAD, JNIHandles::resolve(action)); | |
| 1121 | |
| 1122 // get run() method | |
| 1123 methodOop m_oop = Klass::cast(object->klass())->uncached_lookup_method( | |
| 1124 vmSymbols::run_method_name(), | |
| 1125 vmSymbols::void_object_signature()); | |
| 1126 methodHandle m (THREAD, m_oop); | |
| 1127 if (m.is_null() || !m->is_method() || !methodOop(m())->is_public() || methodOop(m())->is_static()) { | |
| 1128 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "No run method"); | |
| 1129 } | |
| 1130 | |
| 1131 // Compute the frame initiating the do privileged operation and setup the privileged stack | |
| 1132 vframeStream vfst(thread); | |
| 1133 vfst.security_get_caller_frame(1); | |
| 1134 | |
| 1135 if (!vfst.at_end()) { | |
| 1136 pi.initialize(&vfst, JNIHandles::resolve(context), thread->privileged_stack_top(), CHECK_NULL); | |
| 1137 thread->set_privileged_stack_top(&pi); | |
| 1138 } | |
| 1139 | |
| 1140 | |
| 1141 // invoke the Object run() in the action object. We cannot use call_interface here, since the static type | |
| 1142 // is not really known - it is either java.security.PrivilegedAction or java.security.PrivilegedExceptionAction | |
| 1143 Handle pending_exception; | |
| 1144 JavaValue result(T_OBJECT); | |
| 1145 JavaCallArguments args(object); | |
| 1146 JavaCalls::call(&result, m, &args, THREAD); | |
| 1147 | |
| 1148 // done with action, remove ourselves from the list | |
| 1149 if (!vfst.at_end()) { | |
| 1150 assert(thread->privileged_stack_top() != NULL && thread->privileged_stack_top() == &pi, "wrong top element"); | |
| 1151 thread->set_privileged_stack_top(thread->privileged_stack_top()->next()); | |
| 1152 } | |
| 1153 | |
| 1154 if (HAS_PENDING_EXCEPTION) { | |
| 1155 pending_exception = Handle(THREAD, PENDING_EXCEPTION); | |
| 1156 CLEAR_PENDING_EXCEPTION; | |
| 1157 | |
| 1142 | 1158 if ( pending_exception->is_a(SystemDictionary::Exception_klass()) && |
| 1159 !pending_exception->is_a(SystemDictionary::RuntimeException_klass())) { | |
| 0 | 1160 // Throw a java.security.PrivilegedActionException(Exception e) exception |
| 1161 JavaCallArguments args(pending_exception); | |
|
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1162 THROW_ARG_0(vmSymbols::java_security_PrivilegedActionException(), |
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1163 vmSymbols::exception_void_signature(), |
| 0 | 1164 &args); |
| 1165 } | |
| 1166 } | |
| 1167 | |
| 1168 if (pending_exception.not_null()) THROW_OOP_0(pending_exception()); | |
| 1169 return JNIHandles::make_local(env, (oop) result.get_jobject()); | |
| 1170 JVM_END | |
| 1171 | |
| 1172 | |
| 1173 // Returns the inherited_access_control_context field of the running thread. | |
| 1174 JVM_ENTRY(jobject, JVM_GetInheritedAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1175 JVMWrapper("JVM_GetInheritedAccessControlContext"); | |
| 1176 oop result = java_lang_Thread::inherited_access_control_context(thread->threadObj()); | |
| 1177 return JNIHandles::make_local(env, result); | |
| 1178 JVM_END | |
| 1179 | |
| 1180 class RegisterArrayForGC { | |
| 1181 private: | |
| 1182 JavaThread *_thread; | |
| 1183 public: | |
| 1184 RegisterArrayForGC(JavaThread *thread, GrowableArray<oop>* array) { | |
| 1185 _thread = thread; | |
| 1186 _thread->register_array_for_gc(array); | |
| 1187 } | |
| 1188 | |
| 1189 ~RegisterArrayForGC() { | |
| 1190 _thread->register_array_for_gc(NULL); | |
| 1191 } | |
| 1192 }; | |
| 1193 | |
| 1194 | |
| 1195 JVM_ENTRY(jobject, JVM_GetStackAccessControlContext(JNIEnv *env, jclass cls)) | |
| 1196 JVMWrapper("JVM_GetStackAccessControlContext"); | |
| 1197 if (!UsePrivilegedStack) return NULL; | |
| 1198 | |
| 1199 ResourceMark rm(THREAD); | |
| 1200 GrowableArray<oop>* local_array = new GrowableArray<oop>(12); | |
| 1201 JvmtiVMObjectAllocEventCollector oam; | |
| 1202 | |
| 1203 // count the protection domains on the execution stack. We collapse | |
| 1204 // duplicate consecutive protection domains into a single one, as | |
| 1205 // well as stopping when we hit a privileged frame. | |
| 1206 | |
| 1207 // Use vframeStream to iterate through Java frames | |
| 1208 vframeStream vfst(thread); | |
| 1209 | |
| 1210 oop previous_protection_domain = NULL; | |
| 1211 Handle privileged_context(thread, NULL); | |
| 1212 bool is_privileged = false; | |
| 1213 oop protection_domain = NULL; | |
| 1214 | |
| 1215 for(; !vfst.at_end(); vfst.next()) { | |
| 1216 // get method of frame | |
| 1217 methodOop method = vfst.method(); | |
| 1218 intptr_t* frame_id = vfst.frame_id(); | |
| 1219 | |
| 1220 // check the privileged frames to see if we have a match | |
| 1221 if (thread->privileged_stack_top() && thread->privileged_stack_top()->frame_id() == frame_id) { | |
| 1222 // this frame is privileged | |
| 1223 is_privileged = true; | |
| 1224 privileged_context = Handle(thread, thread->privileged_stack_top()->privileged_context()); | |
| 1225 protection_domain = thread->privileged_stack_top()->protection_domain(); | |
| 1226 } else { | |
| 1227 protection_domain = instanceKlass::cast(method->method_holder())->protection_domain(); | |
| 1228 } | |
| 1229 | |
| 1230 if ((previous_protection_domain != protection_domain) && (protection_domain != NULL)) { | |
| 1231 local_array->push(protection_domain); | |
| 1232 previous_protection_domain = protection_domain; | |
| 1233 } | |
| 1234 | |
| 1235 if (is_privileged) break; | |
| 1236 } | |
| 1237 | |
| 1238 | |
| 1239 // either all the domains on the stack were system domains, or | |
| 1240 // we had a privileged system domain | |
| 1241 if (local_array->is_empty()) { | |
| 1242 if (is_privileged && privileged_context.is_null()) return NULL; | |
| 1243 | |
| 1244 oop result = java_security_AccessControlContext::create(objArrayHandle(), is_privileged, privileged_context, CHECK_NULL); | |
| 1245 return JNIHandles::make_local(env, result); | |
| 1246 } | |
| 1247 | |
| 1248 // the resource area must be registered in case of a gc | |
| 1249 RegisterArrayForGC ragc(thread, local_array); | |
| 1142 | 1250 objArrayOop context = oopFactory::new_objArray(SystemDictionary::ProtectionDomain_klass(), |
| 0 | 1251 local_array->length(), CHECK_NULL); |
| 1252 objArrayHandle h_context(thread, context); | |
| 1253 for (int index = 0; index < local_array->length(); index++) { | |
| 1254 h_context->obj_at_put(index, local_array->at(index)); | |
| 1255 } | |
| 1256 | |
| 1257 oop result = java_security_AccessControlContext::create(h_context, is_privileged, privileged_context, CHECK_NULL); | |
| 1258 | |
| 1259 return JNIHandles::make_local(env, result); | |
| 1260 JVM_END | |
| 1261 | |
| 1262 | |
| 1263 JVM_QUICK_ENTRY(jboolean, JVM_IsArrayClass(JNIEnv *env, jclass cls)) | |
| 1264 JVMWrapper("JVM_IsArrayClass"); | |
| 1265 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 1266 return (k != NULL) && Klass::cast(k)->oop_is_javaArray() ? true : false; | |
| 1267 JVM_END | |
| 1268 | |
| 1269 | |
| 1270 JVM_QUICK_ENTRY(jboolean, JVM_IsPrimitiveClass(JNIEnv *env, jclass cls)) | |
| 1271 JVMWrapper("JVM_IsPrimitiveClass"); | |
| 1272 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1273 return (jboolean) java_lang_Class::is_primitive(mirror); | |
| 1274 JVM_END | |
| 1275 | |
| 1276 | |
| 1277 JVM_ENTRY(jclass, JVM_GetComponentType(JNIEnv *env, jclass cls)) | |
| 1278 JVMWrapper("JVM_GetComponentType"); | |
| 1279 oop mirror = JNIHandles::resolve_non_null(cls); | |
| 1280 oop result = Reflection::array_component_type(mirror, CHECK_NULL); | |
| 1281 return (jclass) JNIHandles::make_local(env, result); | |
| 1282 JVM_END | |
| 1283 | |
| 1284 | |
| 1285 JVM_ENTRY(jint, JVM_GetClassModifiers(JNIEnv *env, jclass cls)) | |
| 1286 JVMWrapper("JVM_GetClassModifiers"); | |
| 1287 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1288 // Primitive type | |
| 1289 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 1290 } | |
| 1291 | |
| 1292 Klass* k = Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls))); | |
| 1293 debug_only(int computed_modifiers = k->compute_modifier_flags(CHECK_0)); | |
| 1294 assert(k->modifier_flags() == computed_modifiers, "modifiers cache is OK"); | |
| 1295 return k->modifier_flags(); | |
| 1296 JVM_END | |
| 1297 | |
| 1298 | |
| 1299 // Inner class reflection /////////////////////////////////////////////////////////////////////////////// | |
| 1300 | |
| 1301 JVM_ENTRY(jobjectArray, JVM_GetDeclaredClasses(JNIEnv *env, jclass ofClass)) | |
| 1302 const int inner_class_info_index = 0; | |
| 1303 const int outer_class_info_index = 1; | |
| 1304 | |
| 1305 JvmtiVMObjectAllocEventCollector oam; | |
| 1306 // ofClass is a reference to a java_lang_Class object. The mirror object | |
| 1307 // of an instanceKlass | |
| 1308 | |
| 1309 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 1310 ! Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_instance()) { | |
| 1142 | 1311 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1312 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1313 } | |
| 1314 | |
| 1315 instanceKlassHandle k(thread, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
| 1316 | |
| 1317 if (k->inner_classes()->length() == 0) { | |
| 1318 // Neither an inner nor outer class | |
| 1142 | 1319 oop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), 0, CHECK_NULL); |
| 0 | 1320 return (jobjectArray)JNIHandles::make_local(env, result); |
| 1321 } | |
| 1322 | |
| 1323 // find inner class info | |
| 1324 typeArrayHandle icls(thread, k->inner_classes()); | |
| 1325 constantPoolHandle cp(thread, k->constants()); | |
| 1326 int length = icls->length(); | |
| 1327 | |
| 1328 // Allocate temp. result array | |
| 1142 | 1329 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Class_klass(), length/4, CHECK_NULL); |
| 0 | 1330 objArrayHandle result (THREAD, r); |
| 1331 int members = 0; | |
| 1332 | |
| 1333 for(int i = 0; i < length; i += 4) { | |
| 1334 int ioff = icls->ushort_at(i + inner_class_info_index); | |
| 1335 int ooff = icls->ushort_at(i + outer_class_info_index); | |
| 1336 | |
| 1337 if (ioff != 0 && ooff != 0) { | |
| 1338 // Check to see if the name matches the class we're looking for | |
| 1339 // before attempting to find the class. | |
| 1340 if (cp->klass_name_at_matches(k, ooff)) { | |
| 1341 klassOop outer_klass = cp->klass_at(ooff, CHECK_NULL); | |
| 1342 if (outer_klass == k()) { | |
| 1343 klassOop ik = cp->klass_at(ioff, CHECK_NULL); | |
| 1344 instanceKlassHandle inner_klass (THREAD, ik); | |
| 1345 | |
| 1346 // Throws an exception if outer klass has not declared k as | |
| 1347 // an inner klass | |
|
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1348 Reflection::check_for_inner_class(k, inner_klass, true, CHECK_NULL); |
| 0 | 1349 |
| 1350 result->obj_at_put(members, inner_klass->java_mirror()); | |
| 1351 members++; | |
| 1352 } | |
| 1353 } | |
| 1354 } | |
| 1355 } | |
| 1356 | |
| 1357 if (members != length) { | |
| 1358 // Return array of right length | |
| 1142 | 1359 objArrayOop res = oopFactory::new_objArray(SystemDictionary::Class_klass(), members, CHECK_NULL); |
| 0 | 1360 for(int i = 0; i < members; i++) { |
| 1361 res->obj_at_put(i, result->obj_at(i)); | |
| 1362 } | |
| 1363 return (jobjectArray)JNIHandles::make_local(env, res); | |
| 1364 } | |
| 1365 | |
| 1366 return (jobjectArray)JNIHandles::make_local(env, result()); | |
| 1367 JVM_END | |
| 1368 | |
| 1369 | |
| 1370 JVM_ENTRY(jclass, JVM_GetDeclaringClass(JNIEnv *env, jclass ofClass)) | |
|
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1371 { |
| 0 | 1372 // ofClass is a reference to a java_lang_Class object. |
| 1373 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 1374 ! Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_instance()) { | |
| 1375 return NULL; | |
| 1376 } | |
| 1377 | |
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1378 bool inner_is_member = false; |
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1379 klassOop outer_klass |
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1380 = instanceKlass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)) |
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1381 )->compute_enclosing_class(&inner_is_member, CHECK_NULL); |
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1382 if (outer_klass == NULL) return NULL; // already a top-level class |
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1383 if (!inner_is_member) return NULL; // an anonymous class (inside a method) |
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1384 return (jclass) JNIHandles::make_local(env, Klass::cast(outer_klass)->java_mirror()); |
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1385 } |
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1386 JVM_END |
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1387 |
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1388 // should be in instanceKlass.cpp, but is here for historical reasons |
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1389 klassOop instanceKlass::compute_enclosing_class_impl(instanceKlassHandle k, |
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1390 bool* inner_is_member, |
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1391 TRAPS) { |
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1392 Thread* thread = THREAD; |
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1393 const int inner_class_info_index = inner_class_inner_class_info_offset; |
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1394 const int outer_class_info_index = inner_class_outer_class_info_offset; |
| 0 | 1395 |
| 1396 if (k->inner_classes()->length() == 0) { | |
| 1397 // No inner class info => no declaring class | |
| 1398 return NULL; | |
| 1399 } | |
| 1400 | |
| 1401 typeArrayHandle i_icls(thread, k->inner_classes()); | |
| 1402 constantPoolHandle i_cp(thread, k->constants()); | |
| 1403 int i_length = i_icls->length(); | |
| 1404 | |
| 1405 bool found = false; | |
| 1406 klassOop ok; | |
| 1407 instanceKlassHandle outer_klass; | |
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1408 *inner_is_member = false; |
| 0 | 1409 |
| 1410 // Find inner_klass attribute | |
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1411 for (int i = 0; i < i_length && !found; i += inner_class_next_offset) { |
| 0 | 1412 int ioff = i_icls->ushort_at(i + inner_class_info_index); |
| 1413 int ooff = i_icls->ushort_at(i + outer_class_info_index); | |
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1414 int noff = i_icls->ushort_at(i + inner_class_inner_name_offset); |
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1415 if (ioff != 0) { |
| 0 | 1416 // Check to see if the name matches the class we're looking for |
| 1417 // before attempting to find the class. | |
| 1418 if (i_cp->klass_name_at_matches(k, ioff)) { | |
| 1419 klassOop inner_klass = i_cp->klass_at(ioff, CHECK_NULL); | |
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1420 found = (k() == inner_klass); |
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1421 if (found && ooff != 0) { |
| 0 | 1422 ok = i_cp->klass_at(ooff, CHECK_NULL); |
| 1423 outer_klass = instanceKlassHandle(thread, ok); | |
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1424 *inner_is_member = true; |
| 0 | 1425 } |
| 1426 } | |
| 1427 } | |
| 1428 } | |
| 1429 | |
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1430 if (found && outer_klass.is_null()) { |
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1431 // It may be anonymous; try for that. |
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1432 int encl_method_class_idx = k->enclosing_method_class_index(); |
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1433 if (encl_method_class_idx != 0) { |
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1434 ok = i_cp->klass_at(encl_method_class_idx, CHECK_NULL); |
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1435 outer_klass = instanceKlassHandle(thread, ok); |
|
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1436 *inner_is_member = false; |
|
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1437 } |
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1438 } |
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1439 |
| 0 | 1440 // If no inner class attribute found for this class. |
|
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1441 if (outer_klass.is_null()) return NULL; |
| 0 | 1442 |
| 1443 // Throws an exception if outer klass has not declared k as an inner klass | |
|
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1444 // We need evidence that each klass knows about the other, or else |
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1445 // the system could allow a spoof of an inner class to gain access rights. |
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1446 Reflection::check_for_inner_class(outer_klass, k, *inner_is_member, CHECK_NULL); |
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1447 return outer_klass(); |
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1448 } |
| 0 | 1449 |
| 1450 JVM_ENTRY(jstring, JVM_GetClassSignature(JNIEnv *env, jclass cls)) | |
| 1451 assert (cls != NULL, "illegal class"); | |
| 1452 JVMWrapper("JVM_GetClassSignature"); | |
| 1453 JvmtiVMObjectAllocEventCollector oam; | |
| 1454 ResourceMark rm(THREAD); | |
| 1455 // Return null for arrays and primatives | |
| 1456 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1457 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
| 1458 if (Klass::cast(k)->oop_is_instance()) { | |
|
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1459 Symbol* sym = instanceKlass::cast(k)->generic_signature(); |
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1460 if (sym == NULL) return NULL; |
| 0 | 1461 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 1462 return (jstring) JNIHandles::make_local(env, str()); | |
| 1463 } | |
| 1464 } | |
| 1465 return NULL; | |
| 1466 JVM_END | |
| 1467 | |
| 1468 | |
| 1469 JVM_ENTRY(jbyteArray, JVM_GetClassAnnotations(JNIEnv *env, jclass cls)) | |
| 1470 assert (cls != NULL, "illegal class"); | |
| 1471 JVMWrapper("JVM_GetClassAnnotations"); | |
| 1472 ResourceMark rm(THREAD); | |
| 1473 // Return null for arrays and primitives | |
| 1474 if (!java_lang_Class::is_primitive(JNIHandles::resolve(cls))) { | |
| 1475 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve(cls)); | |
| 1476 if (Klass::cast(k)->oop_is_instance()) { | |
| 1477 return (jbyteArray) JNIHandles::make_local(env, | |
| 1478 instanceKlass::cast(k)->class_annotations()); | |
| 1479 } | |
| 1480 } | |
| 1481 return NULL; | |
| 1482 JVM_END | |
| 1483 | |
| 1484 | |
| 1485 JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field)) | |
| 1486 assert(field != NULL, "illegal field"); | |
| 1487 JVMWrapper("JVM_GetFieldAnnotations"); | |
| 1488 | |
| 1489 // some of this code was adapted from from jni_FromReflectedField | |
| 1490 | |
| 1491 // field is a handle to a java.lang.reflect.Field object | |
| 1492 oop reflected = JNIHandles::resolve_non_null(field); | |
| 1493 oop mirror = java_lang_reflect_Field::clazz(reflected); | |
| 1494 klassOop k = java_lang_Class::as_klassOop(mirror); | |
| 1495 int slot = java_lang_reflect_Field::slot(reflected); | |
| 1496 int modifiers = java_lang_reflect_Field::modifiers(reflected); | |
| 1497 | |
| 1498 fieldDescriptor fd; | |
| 1499 KlassHandle kh(THREAD, k); | |
| 3938 | 1500 intptr_t offset = instanceKlass::cast(kh())->field_offset(slot); |
| 0 | 1501 |
| 1502 if (modifiers & JVM_ACC_STATIC) { | |
| 1503 // for static fields we only look in the current class | |
| 1504 if (!instanceKlass::cast(kh())->find_local_field_from_offset(offset, | |
| 1505 true, &fd)) { | |
| 1506 assert(false, "cannot find static field"); | |
| 1507 return NULL; // robustness | |
| 1508 } | |
| 1509 } else { | |
| 1510 // for instance fields we start with the current class and work | |
| 1511 // our way up through the superclass chain | |
| 1512 if (!instanceKlass::cast(kh())->find_field_from_offset(offset, false, | |
| 1513 &fd)) { | |
| 1514 assert(false, "cannot find instance field"); | |
| 1515 return NULL; // robustness | |
| 1516 } | |
| 1517 } | |
| 1518 | |
| 1519 return (jbyteArray) JNIHandles::make_local(env, fd.annotations()); | |
| 1520 JVM_END | |
| 1521 | |
| 1522 | |
| 1523 static methodOop jvm_get_method_common(jobject method, TRAPS) { | |
| 1524 // some of this code was adapted from from jni_FromReflectedMethod | |
| 1525 | |
| 1526 oop reflected = JNIHandles::resolve_non_null(method); | |
| 1527 oop mirror = NULL; | |
| 1528 int slot = 0; | |
| 1529 | |
| 1142 | 1530 if (reflected->klass() == SystemDictionary::reflect_Constructor_klass()) { |
| 0 | 1531 mirror = java_lang_reflect_Constructor::clazz(reflected); |
| 1532 slot = java_lang_reflect_Constructor::slot(reflected); | |
| 1533 } else { | |
| 1142 | 1534 assert(reflected->klass() == SystemDictionary::reflect_Method_klass(), |
| 0 | 1535 "wrong type"); |
| 1536 mirror = java_lang_reflect_Method::clazz(reflected); | |
| 1537 slot = java_lang_reflect_Method::slot(reflected); | |
| 1538 } | |
| 1539 klassOop k = java_lang_Class::as_klassOop(mirror); | |
| 1540 | |
| 1541 KlassHandle kh(THREAD, k); | |
| 1542 methodOop m = instanceKlass::cast(kh())->method_with_idnum(slot); | |
| 1543 if (m == NULL) { | |
| 1544 assert(false, "cannot find method"); | |
| 1545 return NULL; // robustness | |
| 1546 } | |
| 1547 | |
| 1548 return m; | |
| 1549 } | |
| 1550 | |
| 1551 | |
| 1552 JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method)) | |
| 1553 JVMWrapper("JVM_GetMethodAnnotations"); | |
| 1554 | |
| 1555 // method is a handle to a java.lang.reflect.Method object | |
| 1556 methodOop m = jvm_get_method_common(method, CHECK_NULL); | |
| 1557 return (jbyteArray) JNIHandles::make_local(env, m->annotations()); | |
| 1558 JVM_END | |
| 1559 | |
| 1560 | |
| 1561 JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject method)) | |
| 1562 JVMWrapper("JVM_GetMethodDefaultAnnotationValue"); | |
| 1563 | |
| 1564 // method is a handle to a java.lang.reflect.Method object | |
| 1565 methodOop m = jvm_get_method_common(method, CHECK_NULL); | |
| 1566 return (jbyteArray) JNIHandles::make_local(env, m->annotation_default()); | |
| 1567 JVM_END | |
| 1568 | |
| 1569 | |
| 1570 JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject method)) | |
| 1571 JVMWrapper("JVM_GetMethodParameterAnnotations"); | |
| 1572 | |
| 1573 // method is a handle to a java.lang.reflect.Method object | |
| 1574 methodOop m = jvm_get_method_common(method, CHECK_NULL); | |
| 1575 return (jbyteArray) JNIHandles::make_local(env, m->parameter_annotations()); | |
| 1576 JVM_END | |
| 1577 | |
| 1578 | |
| 1579 // New (JDK 1.4) reflection implementation ///////////////////////////////////// | |
| 1580 | |
| 1581 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1582 { | |
| 1583 JVMWrapper("JVM_GetClassDeclaredFields"); | |
| 1584 JvmtiVMObjectAllocEventCollector oam; | |
| 1585 | |
| 1586 // Exclude primitive types and array types | |
| 1587 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) || | |
| 1588 Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { | |
| 1589 // Return empty array | |
| 1142 | 1590 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), 0, CHECK_NULL); |
| 0 | 1591 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1592 } | |
| 1593 | |
| 1594 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
| 1595 constantPoolHandle cp(THREAD, k->constants()); | |
| 1596 | |
| 1597 // Ensure class is linked | |
| 1598 k->link_class(CHECK_NULL); | |
| 1599 | |
| 1600 // 4496456 We need to filter out java.lang.Throwable.backtrace | |
| 1601 bool skip_backtrace = false; | |
| 1602 | |
| 1603 // Allocate result | |
| 1604 int num_fields; | |
| 1605 | |
| 1606 if (publicOnly) { | |
| 1607 num_fields = 0; | |
| 3938 | 1608 for (JavaFieldStream fs(k()); !fs.done(); fs.next()) { |
| 1609 if (fs.access_flags().is_public()) ++num_fields; | |
| 0 | 1610 } |
| 1611 } else { | |
| 3938 | 1612 num_fields = k->java_fields_count(); |
| 0 | 1613 |
| 1142 | 1614 if (k() == SystemDictionary::Throwable_klass()) { |
| 0 | 1615 num_fields--; |
| 1616 skip_backtrace = true; | |
| 1617 } | |
| 1618 } | |
| 1619 | |
| 1142 | 1620 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Field_klass(), num_fields, CHECK_NULL); |
| 0 | 1621 objArrayHandle result (THREAD, r); |
| 1622 | |
| 1623 int out_idx = 0; | |
| 1624 fieldDescriptor fd; | |
| 3938 | 1625 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { |
| 0 | 1626 if (skip_backtrace) { |
| 1627 // 4496456 skip java.lang.Throwable.backtrace | |
| 3938 | 1628 int offset = fs.offset(); |
| 0 | 1629 if (offset == java_lang_Throwable::get_backtrace_offset()) continue; |
| 1630 } | |
| 1631 | |
| 3938 | 1632 if (!publicOnly || fs.access_flags().is_public()) { |
| 1633 fd.initialize(k(), fs.index()); | |
| 0 | 1634 oop field = Reflection::new_field(&fd, UseNewReflection, CHECK_NULL); |
| 1635 result->obj_at_put(out_idx, field); | |
| 1636 ++out_idx; | |
| 1637 } | |
| 1638 } | |
| 1639 assert(out_idx == num_fields, "just checking"); | |
| 1640 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1641 } | |
| 1642 JVM_END | |
| 1643 | |
| 1644 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1645 { | |
| 1646 JVMWrapper("JVM_GetClassDeclaredMethods"); | |
| 1647 JvmtiVMObjectAllocEventCollector oam; | |
| 1648 | |
| 1649 // Exclude primitive types and array types | |
| 1650 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
| 1651 || Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { | |
| 1652 // Return empty array | |
| 1142 | 1653 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), 0, CHECK_NULL); |
| 0 | 1654 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1655 } | |
| 1656 | |
| 1657 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
| 1658 | |
| 1659 // Ensure class is linked | |
| 1660 k->link_class(CHECK_NULL); | |
| 1661 | |
| 1662 objArrayHandle methods (THREAD, k->methods()); | |
| 1663 int methods_length = methods->length(); | |
| 1664 int num_methods = 0; | |
| 1665 | |
| 1666 int i; | |
| 1667 for (i = 0; i < methods_length; i++) { | |
| 1668 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
| 1669 if (!method->is_initializer()) { | |
| 1670 if (!publicOnly || method->is_public()) { | |
| 1671 ++num_methods; | |
| 1672 } | |
| 1673 } | |
| 1674 } | |
| 1675 | |
| 1676 // Allocate result | |
| 1142 | 1677 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), num_methods, CHECK_NULL); |
| 0 | 1678 objArrayHandle result (THREAD, r); |
| 1679 | |
| 1680 int out_idx = 0; | |
| 1681 for (i = 0; i < methods_length; i++) { | |
| 1682 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
| 1683 if (!method->is_initializer()) { | |
| 1684 if (!publicOnly || method->is_public()) { | |
| 1685 oop m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL); | |
| 1686 result->obj_at_put(out_idx, m); | |
| 1687 ++out_idx; | |
| 1688 } | |
| 1689 } | |
| 1690 } | |
| 1691 assert(out_idx == num_methods, "just checking"); | |
| 1692 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1693 } | |
| 1694 JVM_END | |
| 1695 | |
| 1696 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly)) | |
| 1697 { | |
| 1698 JVMWrapper("JVM_GetClassDeclaredConstructors"); | |
| 1699 JvmtiVMObjectAllocEventCollector oam; | |
| 1700 | |
| 1701 // Exclude primitive types and array types | |
| 1702 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass)) | |
| 1703 || Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass)))->oop_is_javaArray()) { | |
| 1704 // Return empty array | |
| 1142 | 1705 oop res = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), 0 , CHECK_NULL); |
| 0 | 1706 return (jobjectArray) JNIHandles::make_local(env, res); |
| 1707 } | |
| 1708 | |
| 1709 instanceKlassHandle k(THREAD, java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(ofClass))); | |
| 1710 | |
| 1711 // Ensure class is linked | |
| 1712 k->link_class(CHECK_NULL); | |
| 1713 | |
| 1714 objArrayHandle methods (THREAD, k->methods()); | |
| 1715 int methods_length = methods->length(); | |
| 1716 int num_constructors = 0; | |
| 1717 | |
| 1718 int i; | |
| 1719 for (i = 0; i < methods_length; i++) { | |
| 1720 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
| 1721 if (method->is_initializer() && !method->is_static()) { | |
| 1722 if (!publicOnly || method->is_public()) { | |
| 1723 ++num_constructors; | |
| 1724 } | |
| 1725 } | |
| 1726 } | |
| 1727 | |
| 1728 // Allocate result | |
| 1142 | 1729 objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), num_constructors, CHECK_NULL); |
| 0 | 1730 objArrayHandle result(THREAD, r); |
| 1731 | |
| 1732 int out_idx = 0; | |
| 1733 for (i = 0; i < methods_length; i++) { | |
| 1734 methodHandle method(THREAD, (methodOop) methods->obj_at(i)); | |
| 1735 if (method->is_initializer() && !method->is_static()) { | |
| 1736 if (!publicOnly || method->is_public()) { | |
| 1737 oop m = Reflection::new_constructor(method, CHECK_NULL); | |
| 1738 result->obj_at_put(out_idx, m); | |
| 1739 ++out_idx; | |
| 1740 } | |
| 1741 } | |
| 1742 } | |
| 1743 assert(out_idx == num_constructors, "just checking"); | |
| 1744 return (jobjectArray) JNIHandles::make_local(env, result()); | |
| 1745 } | |
| 1746 JVM_END | |
| 1747 | |
| 1748 JVM_ENTRY(jint, JVM_GetClassAccessFlags(JNIEnv *env, jclass cls)) | |
| 1749 { | |
| 1750 JVMWrapper("JVM_GetClassAccessFlags"); | |
| 1751 if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1752 // Primitive type | |
| 1753 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; | |
| 1754 } | |
| 1755 | |
| 1756 Klass* k = Klass::cast(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls))); | |
| 1757 return k->access_flags().as_int() & JVM_ACC_WRITTEN_FLAGS; | |
| 1758 } | |
| 1759 JVM_END | |
| 1760 | |
| 1761 | |
| 1762 // Constant pool access ////////////////////////////////////////////////////////// | |
| 1763 | |
| 1764 JVM_ENTRY(jobject, JVM_GetClassConstantPool(JNIEnv *env, jclass cls)) | |
| 1765 { | |
| 1766 JVMWrapper("JVM_GetClassConstantPool"); | |
| 1767 JvmtiVMObjectAllocEventCollector oam; | |
| 1768 | |
| 1769 // Return null for primitives and arrays | |
| 1770 if (!java_lang_Class::is_primitive(JNIHandles::resolve_non_null(cls))) { | |
| 1771 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 1772 if (Klass::cast(k)->oop_is_instance()) { | |
| 1773 instanceKlassHandle k_h(THREAD, k); | |
| 1774 Handle jcp = sun_reflect_ConstantPool::create(CHECK_NULL); | |
| 1775 sun_reflect_ConstantPool::set_cp_oop(jcp(), k_h->constants()); | |
| 1776 return JNIHandles::make_local(jcp()); | |
| 1777 } | |
| 1778 } | |
| 1779 return NULL; | |
| 1780 } | |
| 1781 JVM_END | |
| 1782 | |
| 1783 | |
| 1784 JVM_ENTRY(jint, JVM_ConstantPoolGetSize(JNIEnv *env, jobject unused, jobject jcpool)) | |
| 1785 { | |
| 1786 JVMWrapper("JVM_ConstantPoolGetSize"); | |
| 1787 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1788 return cp->length(); | |
| 1789 } | |
| 1790 JVM_END | |
| 1791 | |
| 1792 | |
| 1793 static void bounds_check(constantPoolHandle cp, jint index, TRAPS) { | |
| 1794 if (!cp->is_within_bounds(index)) { | |
| 1795 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "Constant pool index out of bounds"); | |
| 1796 } | |
| 1797 } | |
| 1798 | |
| 1799 | |
| 1800 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1801 { | |
| 1802 JVMWrapper("JVM_ConstantPoolGetClassAt"); | |
| 1803 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1804 bounds_check(cp, index, CHECK_NULL); | |
| 1805 constantTag tag = cp->tag_at(index); | |
| 1806 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 1807 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1808 } | |
| 1809 klassOop k = cp->klass_at(index, CHECK_NULL); | |
|
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1810 return (jclass) JNIHandles::make_local(k->java_mirror()); |
| 0 | 1811 } |
| 1812 JVM_END | |
| 1813 | |
| 1814 | |
| 1815 JVM_ENTRY(jclass, JVM_ConstantPoolGetClassAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1816 { | |
| 1817 JVMWrapper("JVM_ConstantPoolGetClassAtIfLoaded"); | |
| 1818 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1819 bounds_check(cp, index, CHECK_NULL); | |
| 1820 constantTag tag = cp->tag_at(index); | |
| 1821 if (!tag.is_klass() && !tag.is_unresolved_klass()) { | |
| 1822 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1823 } | |
| 1824 klassOop k = constantPoolOopDesc::klass_at_if_loaded(cp, index); | |
| 1825 if (k == NULL) return NULL; | |
|
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1826 return (jclass) JNIHandles::make_local(k->java_mirror()); |
| 0 | 1827 } |
| 1828 JVM_END | |
| 1829 | |
| 1830 static jobject get_method_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 1831 constantTag tag = cp->tag_at(index); | |
| 1832 if (!tag.is_method() && !tag.is_interface_method()) { | |
| 1833 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1834 } | |
| 1835 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
| 1836 klassOop k_o; | |
| 1837 if (force_resolution) { | |
| 1838 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 1839 } else { | |
| 1840 k_o = constantPoolOopDesc::klass_at_if_loaded(cp, klass_ref); | |
| 1841 if (k_o == NULL) return NULL; | |
| 1842 } | |
| 1843 instanceKlassHandle k(THREAD, k_o); | |
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1844 Symbol* name = cp->uncached_name_ref_at(index); |
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1845 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 1846 methodHandle m (THREAD, k->find_method(name, sig)); |
| 1847 if (m.is_null()) { | |
| 1848 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up method in target class"); | |
| 1849 } | |
| 1850 oop method; | |
| 1851 if (!m->is_initializer() || m->is_static()) { | |
| 1852 method = Reflection::new_method(m, true, true, CHECK_NULL); | |
| 1853 } else { | |
| 1854 method = Reflection::new_constructor(m, CHECK_NULL); | |
| 1855 } | |
| 1856 return JNIHandles::make_local(method); | |
| 1857 } | |
| 1858 | |
| 1859 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1860 { | |
| 1861 JVMWrapper("JVM_ConstantPoolGetMethodAt"); | |
| 1862 JvmtiVMObjectAllocEventCollector oam; | |
| 1863 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1864 bounds_check(cp, index, CHECK_NULL); | |
| 1865 jobject res = get_method_at_helper(cp, index, true, CHECK_NULL); | |
| 1866 return res; | |
| 1867 } | |
| 1868 JVM_END | |
| 1869 | |
| 1870 JVM_ENTRY(jobject, JVM_ConstantPoolGetMethodAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1871 { | |
| 1872 JVMWrapper("JVM_ConstantPoolGetMethodAtIfLoaded"); | |
| 1873 JvmtiVMObjectAllocEventCollector oam; | |
| 1874 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1875 bounds_check(cp, index, CHECK_NULL); | |
| 1876 jobject res = get_method_at_helper(cp, index, false, CHECK_NULL); | |
| 1877 return res; | |
| 1878 } | |
| 1879 JVM_END | |
| 1880 | |
| 1881 static jobject get_field_at_helper(constantPoolHandle cp, jint index, bool force_resolution, TRAPS) { | |
| 1882 constantTag tag = cp->tag_at(index); | |
| 1883 if (!tag.is_field()) { | |
| 1884 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1885 } | |
| 1886 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
| 1887 klassOop k_o; | |
| 1888 if (force_resolution) { | |
| 1889 k_o = cp->klass_at(klass_ref, CHECK_NULL); | |
| 1890 } else { | |
| 1891 k_o = constantPoolOopDesc::klass_at_if_loaded(cp, klass_ref); | |
| 1892 if (k_o == NULL) return NULL; | |
| 1893 } | |
| 1894 instanceKlassHandle k(THREAD, k_o); | |
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1895 Symbol* name = cp->uncached_name_ref_at(index); |
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1896 Symbol* sig = cp->uncached_signature_ref_at(index); |
| 0 | 1897 fieldDescriptor fd; |
| 1898 klassOop target_klass = k->find_field(name, sig, &fd); | |
| 1899 if (target_klass == NULL) { | |
| 1900 THROW_MSG_0(vmSymbols::java_lang_RuntimeException(), "Unable to look up field in target class"); | |
| 1901 } | |
| 1902 oop field = Reflection::new_field(&fd, true, CHECK_NULL); | |
| 1903 return JNIHandles::make_local(field); | |
| 1904 } | |
| 1905 | |
| 1906 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1907 { | |
| 1908 JVMWrapper("JVM_ConstantPoolGetFieldAt"); | |
| 1909 JvmtiVMObjectAllocEventCollector oam; | |
| 1910 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1911 bounds_check(cp, index, CHECK_NULL); | |
| 1912 jobject res = get_field_at_helper(cp, index, true, CHECK_NULL); | |
| 1913 return res; | |
| 1914 } | |
| 1915 JVM_END | |
| 1916 | |
| 1917 JVM_ENTRY(jobject, JVM_ConstantPoolGetFieldAtIfLoaded(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1918 { | |
| 1919 JVMWrapper("JVM_ConstantPoolGetFieldAtIfLoaded"); | |
| 1920 JvmtiVMObjectAllocEventCollector oam; | |
| 1921 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1922 bounds_check(cp, index, CHECK_NULL); | |
| 1923 jobject res = get_field_at_helper(cp, index, false, CHECK_NULL); | |
| 1924 return res; | |
| 1925 } | |
| 1926 JVM_END | |
| 1927 | |
| 1928 JVM_ENTRY(jobjectArray, JVM_ConstantPoolGetMemberRefInfoAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1929 { | |
| 1930 JVMWrapper("JVM_ConstantPoolGetMemberRefInfoAt"); | |
| 1931 JvmtiVMObjectAllocEventCollector oam; | |
| 1932 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1933 bounds_check(cp, index, CHECK_NULL); | |
| 1934 constantTag tag = cp->tag_at(index); | |
| 1935 if (!tag.is_field_or_method()) { | |
| 1936 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1937 } | |
| 1938 int klass_ref = cp->uncached_klass_ref_index_at(index); | |
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1939 Symbol* klass_name = cp->klass_name_at(klass_ref); |
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1940 Symbol* member_name = cp->uncached_name_ref_at(index); |
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1941 Symbol* member_sig = cp->uncached_signature_ref_at(index); |
| 1142 | 1942 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::String_klass(), 3, CHECK_NULL); |
| 0 | 1943 objArrayHandle dest(THREAD, dest_o); |
| 1944 Handle str = java_lang_String::create_from_symbol(klass_name, CHECK_NULL); | |
| 1945 dest->obj_at_put(0, str()); | |
| 1946 str = java_lang_String::create_from_symbol(member_name, CHECK_NULL); | |
| 1947 dest->obj_at_put(1, str()); | |
| 1948 str = java_lang_String::create_from_symbol(member_sig, CHECK_NULL); | |
| 1949 dest->obj_at_put(2, str()); | |
| 1950 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 1951 } | |
| 1952 JVM_END | |
| 1953 | |
| 1954 JVM_ENTRY(jint, JVM_ConstantPoolGetIntAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1955 { | |
| 1956 JVMWrapper("JVM_ConstantPoolGetIntAt"); | |
| 1957 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1958 bounds_check(cp, index, CHECK_0); | |
| 1959 constantTag tag = cp->tag_at(index); | |
| 1960 if (!tag.is_int()) { | |
| 1961 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1962 } | |
| 1963 return cp->int_at(index); | |
| 1964 } | |
| 1965 JVM_END | |
| 1966 | |
| 1967 JVM_ENTRY(jlong, JVM_ConstantPoolGetLongAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1968 { | |
| 1969 JVMWrapper("JVM_ConstantPoolGetLongAt"); | |
| 1970 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1971 bounds_check(cp, index, CHECK_(0L)); | |
| 1972 constantTag tag = cp->tag_at(index); | |
| 1973 if (!tag.is_long()) { | |
| 1974 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1975 } | |
| 1976 return cp->long_at(index); | |
| 1977 } | |
| 1978 JVM_END | |
| 1979 | |
| 1980 JVM_ENTRY(jfloat, JVM_ConstantPoolGetFloatAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1981 { | |
| 1982 JVMWrapper("JVM_ConstantPoolGetFloatAt"); | |
| 1983 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1984 bounds_check(cp, index, CHECK_(0.0f)); | |
| 1985 constantTag tag = cp->tag_at(index); | |
| 1986 if (!tag.is_float()) { | |
| 1987 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 1988 } | |
| 1989 return cp->float_at(index); | |
| 1990 } | |
| 1991 JVM_END | |
| 1992 | |
| 1993 JVM_ENTRY(jdouble, JVM_ConstantPoolGetDoubleAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 1994 { | |
| 1995 JVMWrapper("JVM_ConstantPoolGetDoubleAt"); | |
| 1996 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 1997 bounds_check(cp, index, CHECK_(0.0)); | |
| 1998 constantTag tag = cp->tag_at(index); | |
| 1999 if (!tag.is_double()) { | |
| 2000 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2001 } | |
| 2002 return cp->double_at(index); | |
| 2003 } | |
| 2004 JVM_END | |
| 2005 | |
| 2006 JVM_ENTRY(jstring, JVM_ConstantPoolGetStringAt(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 2007 { | |
| 2008 JVMWrapper("JVM_ConstantPoolGetStringAt"); | |
| 2009 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 2010 bounds_check(cp, index, CHECK_NULL); | |
| 2011 constantTag tag = cp->tag_at(index); | |
| 2012 if (!tag.is_string() && !tag.is_unresolved_string()) { | |
| 2013 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2014 } | |
| 2015 oop str = cp->string_at(index, CHECK_NULL); | |
| 2016 return (jstring) JNIHandles::make_local(str); | |
| 2017 } | |
| 2018 JVM_END | |
| 2019 | |
| 2020 JVM_ENTRY(jstring, JVM_ConstantPoolGetUTF8At(JNIEnv *env, jobject unused, jobject jcpool, jint index)) | |
| 2021 { | |
| 2022 JVMWrapper("JVM_ConstantPoolGetUTF8At"); | |
| 2023 JvmtiVMObjectAllocEventCollector oam; | |
| 2024 constantPoolHandle cp = constantPoolHandle(THREAD, constantPoolOop(JNIHandles::resolve_non_null(jcpool))); | |
| 2025 bounds_check(cp, index, CHECK_NULL); | |
| 2026 constantTag tag = cp->tag_at(index); | |
| 2027 if (!tag.is_symbol()) { | |
| 2028 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Wrong type at constant pool index"); | |
| 2029 } | |
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2030 Symbol* sym = cp->symbol_at(index); |
| 0 | 2031 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); |
| 2032 return (jstring) JNIHandles::make_local(str()); | |
| 2033 } | |
| 2034 JVM_END | |
| 2035 | |
| 2036 | |
| 2037 // Assertion support. ////////////////////////////////////////////////////////// | |
| 2038 | |
| 2039 JVM_ENTRY(jboolean, JVM_DesiredAssertionStatus(JNIEnv *env, jclass unused, jclass cls)) | |
| 2040 JVMWrapper("JVM_DesiredAssertionStatus"); | |
| 2041 assert(cls != NULL, "bad class"); | |
| 2042 | |
| 2043 oop r = JNIHandles::resolve(cls); | |
| 2044 assert(! java_lang_Class::is_primitive(r), "primitive classes not allowed"); | |
| 2045 if (java_lang_Class::is_primitive(r)) return false; | |
| 2046 | |
| 2047 klassOop k = java_lang_Class::as_klassOop(r); | |
| 2048 assert(Klass::cast(k)->oop_is_instance(), "must be an instance klass"); | |
| 2049 if (! Klass::cast(k)->oop_is_instance()) return false; | |
| 2050 | |
| 2051 ResourceMark rm(THREAD); | |
| 2052 const char* name = Klass::cast(k)->name()->as_C_string(); | |
| 2053 bool system_class = Klass::cast(k)->class_loader() == NULL; | |
| 2054 return JavaAssertions::enabled(name, system_class); | |
| 2055 | |
| 2056 JVM_END | |
| 2057 | |
| 2058 | |
| 2059 // Return a new AssertionStatusDirectives object with the fields filled in with | |
| 2060 // command-line assertion arguments (i.e., -ea, -da). | |
| 2061 JVM_ENTRY(jobject, JVM_AssertionStatusDirectives(JNIEnv *env, jclass unused)) | |
| 2062 JVMWrapper("JVM_AssertionStatusDirectives"); | |
| 2063 JvmtiVMObjectAllocEventCollector oam; | |
| 2064 oop asd = JavaAssertions::createAssertionStatusDirectives(CHECK_NULL); | |
| 2065 return JNIHandles::make_local(env, asd); | |
| 2066 JVM_END | |
| 2067 | |
| 2068 // Verification //////////////////////////////////////////////////////////////////////////////// | |
| 2069 | |
| 2070 // Reflection for the verifier ///////////////////////////////////////////////////////////////// | |
| 2071 | |
| 2072 // RedefineClasses support: bug 6214132 caused verification to fail. | |
| 2073 // All functions from this section should call the jvmtiThreadSate function: | |
| 2074 // klassOop class_to_verify_considering_redefinition(klassOop klass). | |
| 2075 // The function returns a klassOop of the _scratch_class if the verifier | |
| 2076 // was invoked in the middle of the class redefinition. | |
| 2077 // Otherwise it returns its argument value which is the _the_class klassOop. | |
| 2078 // Please, refer to the description in the jvmtiThreadSate.hpp. | |
| 2079 | |
| 2080 JVM_ENTRY(const char*, JVM_GetClassNameUTF(JNIEnv *env, jclass cls)) | |
| 2081 JVMWrapper("JVM_GetClassNameUTF"); | |
| 2082 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2083 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2084 return Klass::cast(k)->name()->as_utf8(); | |
| 2085 JVM_END | |
| 2086 | |
| 2087 | |
| 2088 JVM_QUICK_ENTRY(void, JVM_GetClassCPTypes(JNIEnv *env, jclass cls, unsigned char *types)) | |
| 2089 JVMWrapper("JVM_GetClassCPTypes"); | |
| 2090 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2091 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2092 // types will have length zero if this is not an instanceKlass | |
| 2093 // (length is determined by call to JVM_GetClassCPEntriesCount) | |
| 2094 if (Klass::cast(k)->oop_is_instance()) { | |
| 2095 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2096 for (int index = cp->length() - 1; index >= 0; index--) { | |
| 2097 constantTag tag = cp->tag_at(index); | |
| 2098 types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : | |
| 2099 (tag.is_unresolved_string()) ? JVM_CONSTANT_String : tag.value(); | |
| 2100 } | |
| 2101 } | |
| 2102 JVM_END | |
| 2103 | |
| 2104 | |
| 2105 JVM_QUICK_ENTRY(jint, JVM_GetClassCPEntriesCount(JNIEnv *env, jclass cls)) | |
| 2106 JVMWrapper("JVM_GetClassCPEntriesCount"); | |
| 2107 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2108 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2109 if (!Klass::cast(k)->oop_is_instance()) | |
| 2110 return 0; | |
| 2111 return instanceKlass::cast(k)->constants()->length(); | |
| 2112 JVM_END | |
| 2113 | |
| 2114 | |
| 2115 JVM_QUICK_ENTRY(jint, JVM_GetClassFieldsCount(JNIEnv *env, jclass cls)) | |
| 2116 JVMWrapper("JVM_GetClassFieldsCount"); | |
| 2117 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2118 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2119 if (!Klass::cast(k)->oop_is_instance()) | |
| 2120 return 0; | |
| 3938 | 2121 return instanceKlass::cast(k)->java_fields_count(); |
| 0 | 2122 JVM_END |
| 2123 | |
| 2124 | |
| 2125 JVM_QUICK_ENTRY(jint, JVM_GetClassMethodsCount(JNIEnv *env, jclass cls)) | |
| 2126 JVMWrapper("JVM_GetClassMethodsCount"); | |
| 2127 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2128 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2129 if (!Klass::cast(k)->oop_is_instance()) | |
| 2130 return 0; | |
| 2131 return instanceKlass::cast(k)->methods()->length(); | |
| 2132 JVM_END | |
| 2133 | |
| 2134 | |
| 2135 // The following methods, used for the verifier, are never called with | |
| 2136 // array klasses, so a direct cast to instanceKlass is safe. | |
| 2137 // Typically, these methods are called in a loop with bounds determined | |
| 2138 // by the results of JVM_GetClass{Fields,Methods}Count, which return | |
| 2139 // zero for arrays. | |
| 2140 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionIndexes(JNIEnv *env, jclass cls, jint method_index, unsigned short *exceptions)) | |
| 2141 JVMWrapper("JVM_GetMethodIxExceptionIndexes"); | |
| 2142 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2143 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2144 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2145 int length = methodOop(method)->checked_exceptions_length(); | |
| 2146 if (length > 0) { | |
| 2147 CheckedExceptionElement* table= methodOop(method)->checked_exceptions_start(); | |
| 2148 for (int i = 0; i < length; i++) { | |
| 2149 exceptions[i] = table[i].class_cp_index; | |
| 2150 } | |
| 2151 } | |
| 2152 JVM_END | |
| 2153 | |
| 2154 | |
| 2155 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionsCount(JNIEnv *env, jclass cls, jint method_index)) | |
| 2156 JVMWrapper("JVM_GetMethodIxExceptionsCount"); | |
| 2157 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2158 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2159 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2160 return methodOop(method)->checked_exceptions_length(); | |
| 2161 JVM_END | |
| 2162 | |
| 2163 | |
| 2164 JVM_QUICK_ENTRY(void, JVM_GetMethodIxByteCode(JNIEnv *env, jclass cls, jint method_index, unsigned char *code)) | |
| 2165 JVMWrapper("JVM_GetMethodIxByteCode"); | |
| 2166 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2167 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2168 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2169 memcpy(code, methodOop(method)->code_base(), methodOop(method)->code_size()); | |
| 2170 JVM_END | |
| 2171 | |
| 2172 | |
| 2173 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxByteCodeLength(JNIEnv *env, jclass cls, jint method_index)) | |
| 2174 JVMWrapper("JVM_GetMethodIxByteCodeLength"); | |
| 2175 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2176 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2177 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2178 return methodOop(method)->code_size(); | |
| 2179 JVM_END | |
| 2180 | |
| 2181 | |
| 2182 JVM_QUICK_ENTRY(void, JVM_GetMethodIxExceptionTableEntry(JNIEnv *env, jclass cls, jint method_index, jint entry_index, JVM_ExceptionTableEntryType *entry)) | |
| 2183 JVMWrapper("JVM_GetMethodIxExceptionTableEntry"); | |
| 2184 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2185 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2186 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2187 typeArrayOop extable = methodOop(method)->exception_table(); | |
| 2188 entry->start_pc = extable->int_at(entry_index * 4); | |
| 2189 entry->end_pc = extable->int_at(entry_index * 4 + 1); | |
| 2190 entry->handler_pc = extable->int_at(entry_index * 4 + 2); | |
| 2191 entry->catchType = extable->int_at(entry_index * 4 + 3); | |
| 2192 JVM_END | |
| 2193 | |
| 2194 | |
| 2195 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxExceptionTableLength(JNIEnv *env, jclass cls, int method_index)) | |
| 2196 JVMWrapper("JVM_GetMethodIxExceptionTableLength"); | |
| 2197 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2198 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2199 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2200 return methodOop(method)->exception_table()->length() / 4; | |
| 2201 JVM_END | |
| 2202 | |
| 2203 | |
| 2204 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxModifiers(JNIEnv *env, jclass cls, int method_index)) | |
| 2205 JVMWrapper("JVM_GetMethodIxModifiers"); | |
| 2206 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2207 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2208 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2209 return methodOop(method)->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 2210 JVM_END | |
| 2211 | |
| 2212 | |
| 2213 JVM_QUICK_ENTRY(jint, JVM_GetFieldIxModifiers(JNIEnv *env, jclass cls, int field_index)) | |
| 2214 JVMWrapper("JVM_GetFieldIxModifiers"); | |
| 2215 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2216 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 3938 | 2217 return instanceKlass::cast(k)->field_access_flags(field_index) & JVM_RECOGNIZED_FIELD_MODIFIERS; |
| 0 | 2218 JVM_END |
| 2219 | |
| 2220 | |
| 2221 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxLocalsCount(JNIEnv *env, jclass cls, int method_index)) | |
| 2222 JVMWrapper("JVM_GetMethodIxLocalsCount"); | |
| 2223 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2224 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2225 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2226 return methodOop(method)->max_locals(); | |
| 2227 JVM_END | |
| 2228 | |
| 2229 | |
| 2230 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxArgsSize(JNIEnv *env, jclass cls, int method_index)) | |
| 2231 JVMWrapper("JVM_GetMethodIxArgsSize"); | |
| 2232 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2233 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2234 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2235 return methodOop(method)->size_of_parameters(); | |
| 2236 JVM_END | |
| 2237 | |
| 2238 | |
| 2239 JVM_QUICK_ENTRY(jint, JVM_GetMethodIxMaxStack(JNIEnv *env, jclass cls, int method_index)) | |
| 2240 JVMWrapper("JVM_GetMethodIxMaxStack"); | |
| 2241 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2242 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2243 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2244 return methodOop(method)->max_stack(); | |
| 2245 JVM_END | |
| 2246 | |
| 2247 | |
| 2248 JVM_QUICK_ENTRY(jboolean, JVM_IsConstructorIx(JNIEnv *env, jclass cls, int method_index)) | |
| 2249 JVMWrapper("JVM_IsConstructorIx"); | |
| 2250 ResourceMark rm(THREAD); | |
| 2251 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2252 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2253 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2254 return methodOop(method)->name() == vmSymbols::object_initializer_name(); | |
| 2255 JVM_END | |
| 2256 | |
| 2257 | |
| 2258 JVM_ENTRY(const char*, JVM_GetMethodIxNameUTF(JNIEnv *env, jclass cls, jint method_index)) | |
| 2259 JVMWrapper("JVM_GetMethodIxIxUTF"); | |
| 2260 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2261 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2262 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2263 return methodOop(method)->name()->as_utf8(); | |
| 2264 JVM_END | |
| 2265 | |
| 2266 | |
| 2267 JVM_ENTRY(const char*, JVM_GetMethodIxSignatureUTF(JNIEnv *env, jclass cls, jint method_index)) | |
| 2268 JVMWrapper("JVM_GetMethodIxSignatureUTF"); | |
| 2269 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2270 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2271 oop method = instanceKlass::cast(k)->methods()->obj_at(method_index); | |
| 2272 return methodOop(method)->signature()->as_utf8(); | |
| 2273 JVM_END | |
| 2274 | |
| 2275 /** | |
| 2276 * All of these JVM_GetCP-xxx methods are used by the old verifier to | |
| 2277 * read entries in the constant pool. Since the old verifier always | |
| 2278 * works on a copy of the code, it will not see any rewriting that | |
| 2279 * may possibly occur in the middle of verification. So it is important | |
| 2280 * that nothing it calls tries to use the cpCache instead of the raw | |
| 2281 * constant pool, so we must use cp->uncached_x methods when appropriate. | |
| 2282 */ | |
| 2283 JVM_ENTRY(const char*, JVM_GetCPFieldNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2284 JVMWrapper("JVM_GetCPFieldNameUTF"); | |
| 2285 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2286 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2287 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2288 switch (cp->tag_at(cp_index).value()) { | |
| 2289 case JVM_CONSTANT_Fieldref: | |
| 2290 return cp->uncached_name_ref_at(cp_index)->as_utf8(); | |
| 2291 default: | |
| 2292 fatal("JVM_GetCPFieldNameUTF: illegal constant"); | |
| 2293 } | |
| 2294 ShouldNotReachHere(); | |
| 2295 return NULL; | |
| 2296 JVM_END | |
| 2297 | |
| 2298 | |
| 2299 JVM_ENTRY(const char*, JVM_GetCPMethodNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2300 JVMWrapper("JVM_GetCPMethodNameUTF"); | |
| 2301 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2302 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2303 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2304 switch (cp->tag_at(cp_index).value()) { | |
| 2305 case JVM_CONSTANT_InterfaceMethodref: | |
| 2306 case JVM_CONSTANT_Methodref: | |
|
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|
2307 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2308 return cp->uncached_name_ref_at(cp_index)->as_utf8(); |
| 2309 default: | |
| 2310 fatal("JVM_GetCPMethodNameUTF: illegal constant"); | |
| 2311 } | |
| 2312 ShouldNotReachHere(); | |
| 2313 return NULL; | |
| 2314 JVM_END | |
| 2315 | |
| 2316 | |
| 2317 JVM_ENTRY(const char*, JVM_GetCPMethodSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2318 JVMWrapper("JVM_GetCPMethodSignatureUTF"); | |
| 2319 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2320 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2321 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2322 switch (cp->tag_at(cp_index).value()) { | |
| 2323 case JVM_CONSTANT_InterfaceMethodref: | |
| 2324 case JVM_CONSTANT_Methodref: | |
|
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|
2325 case JVM_CONSTANT_NameAndType: // for invokedynamic |
| 0 | 2326 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); |
| 2327 default: | |
| 2328 fatal("JVM_GetCPMethodSignatureUTF: illegal constant"); | |
| 2329 } | |
| 2330 ShouldNotReachHere(); | |
| 2331 return NULL; | |
| 2332 JVM_END | |
| 2333 | |
| 2334 | |
| 2335 JVM_ENTRY(const char*, JVM_GetCPFieldSignatureUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2336 JVMWrapper("JVM_GetCPFieldSignatureUTF"); | |
| 2337 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2338 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2339 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2340 switch (cp->tag_at(cp_index).value()) { | |
| 2341 case JVM_CONSTANT_Fieldref: | |
| 2342 return cp->uncached_signature_ref_at(cp_index)->as_utf8(); | |
| 2343 default: | |
| 2344 fatal("JVM_GetCPFieldSignatureUTF: illegal constant"); | |
| 2345 } | |
| 2346 ShouldNotReachHere(); | |
| 2347 return NULL; | |
| 2348 JVM_END | |
| 2349 | |
| 2350 | |
| 2351 JVM_ENTRY(const char*, JVM_GetCPClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2352 JVMWrapper("JVM_GetCPClassNameUTF"); | |
| 2353 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2354 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2355 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
|
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|
2356 Symbol* classname = cp->klass_name_at(cp_index); |
| 0 | 2357 return classname->as_utf8(); |
| 2358 JVM_END | |
| 2359 | |
| 2360 | |
| 2361 JVM_ENTRY(const char*, JVM_GetCPFieldClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2362 JVMWrapper("JVM_GetCPFieldClassNameUTF"); | |
| 2363 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2364 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2365 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2366 switch (cp->tag_at(cp_index).value()) { | |
| 2367 case JVM_CONSTANT_Fieldref: { | |
| 2368 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
|
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|
2369 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2370 return classname->as_utf8(); |
| 2371 } | |
| 2372 default: | |
| 2373 fatal("JVM_GetCPFieldClassNameUTF: illegal constant"); | |
| 2374 } | |
| 2375 ShouldNotReachHere(); | |
| 2376 return NULL; | |
| 2377 JVM_END | |
| 2378 | |
| 2379 | |
| 2380 JVM_ENTRY(const char*, JVM_GetCPMethodClassNameUTF(JNIEnv *env, jclass cls, jint cp_index)) | |
| 2381 JVMWrapper("JVM_GetCPMethodClassNameUTF"); | |
| 2382 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2383 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2384 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2385 switch (cp->tag_at(cp_index).value()) { | |
| 2386 case JVM_CONSTANT_Methodref: | |
| 2387 case JVM_CONSTANT_InterfaceMethodref: { | |
| 2388 int class_index = cp->uncached_klass_ref_index_at(cp_index); | |
|
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|
2389 Symbol* classname = cp->klass_name_at(class_index); |
| 0 | 2390 return classname->as_utf8(); |
| 2391 } | |
| 2392 default: | |
| 2393 fatal("JVM_GetCPMethodClassNameUTF: illegal constant"); | |
| 2394 } | |
| 2395 ShouldNotReachHere(); | |
| 2396 return NULL; | |
| 2397 JVM_END | |
| 2398 | |
| 2399 | |
| 3938 | 2400 JVM_ENTRY(jint, JVM_GetCPFieldModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) |
| 0 | 2401 JVMWrapper("JVM_GetCPFieldModifiers"); |
| 2402 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2403 klassOop k_called = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(called_cls)); | |
| 2404 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2405 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
| 2406 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2407 constantPoolOop cp_called = instanceKlass::cast(k_called)->constants(); | |
| 2408 switch (cp->tag_at(cp_index).value()) { | |
| 2409 case JVM_CONSTANT_Fieldref: { | |
|
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|
2410 Symbol* name = cp->uncached_name_ref_at(cp_index); |
|
3582bf76420e
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2162
diff
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|
2411 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
| 3938 | 2412 for (JavaFieldStream fs(k_called); !fs.done(); fs.next()) { |
| 2413 if (fs.name() == name && fs.signature() == signature) { | |
| 2414 return fs.access_flags().as_short() & JVM_RECOGNIZED_FIELD_MODIFIERS; | |
| 0 | 2415 } |
| 2416 } | |
| 2417 return -1; | |
| 2418 } | |
| 2419 default: | |
| 2420 fatal("JVM_GetCPFieldModifiers: illegal constant"); | |
| 2421 } | |
| 2422 ShouldNotReachHere(); | |
| 2423 return 0; | |
| 2424 JVM_END | |
| 2425 | |
| 2426 | |
| 2427 JVM_QUICK_ENTRY(jint, JVM_GetCPMethodModifiers(JNIEnv *env, jclass cls, int cp_index, jclass called_cls)) | |
| 2428 JVMWrapper("JVM_GetCPMethodModifiers"); | |
| 2429 klassOop k = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(cls)); | |
| 2430 klassOop k_called = java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(called_cls)); | |
| 2431 k = JvmtiThreadState::class_to_verify_considering_redefinition(k, thread); | |
| 2432 k_called = JvmtiThreadState::class_to_verify_considering_redefinition(k_called, thread); | |
| 2433 constantPoolOop cp = instanceKlass::cast(k)->constants(); | |
| 2434 switch (cp->tag_at(cp_index).value()) { | |
| 2435 case JVM_CONSTANT_Methodref: | |
| 2436 case JVM_CONSTANT_InterfaceMethodref: { | |
|
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|
2437 Symbol* name = cp->uncached_name_ref_at(cp_index); |
|
3582bf76420e
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2162
diff
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|
2438 Symbol* signature = cp->uncached_signature_ref_at(cp_index); |
| 0 | 2439 objArrayOop methods = instanceKlass::cast(k_called)->methods(); |
| 2440 int methods_count = methods->length(); | |
| 2441 for (int i = 0; i < methods_count; i++) { | |
| 2442 methodOop method = methodOop(methods->obj_at(i)); | |
| 2443 if (method->name() == name && method->signature() == signature) { | |
| 2444 return method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; | |
| 2445 } | |
| 2446 } | |
| 2447 return -1; | |
| 2448 } | |
| 2449 default: | |
| 2450 fatal("JVM_GetCPMethodModifiers: illegal constant"); | |
| 2451 } | |
| 2452 ShouldNotReachHere(); | |
| 2453 return 0; | |
| 2454 JVM_END | |
| 2455 | |
| 2456 | |
| 2457 // Misc ////////////////////////////////////////////////////////////////////////////////////////////// | |
| 2458 | |
| 2459 JVM_LEAF(void, JVM_ReleaseUTF(const char *utf)) | |
| 2460 // So long as UTF8::convert_to_utf8 returns resource strings, we don't have to do anything | |
| 2461 JVM_END | |
| 2462 | |
| 2463 | |
| 2464 JVM_ENTRY(jboolean, JVM_IsSameClassPackage(JNIEnv *env, jclass class1, jclass class2)) | |
| 2465 JVMWrapper("JVM_IsSameClassPackage"); | |
| 2466 oop class1_mirror = JNIHandles::resolve_non_null(class1); | |
| 2467 oop class2_mirror = JNIHandles::resolve_non_null(class2); | |
| 2468 klassOop klass1 = java_lang_Class::as_klassOop(class1_mirror); | |
| 2469 klassOop klass2 = java_lang_Class::as_klassOop(class2_mirror); | |
| 2470 return (jboolean) Reflection::is_same_class_package(klass1, klass2); | |
| 2471 JVM_END | |
| 2472 | |
| 2473 | |
| 2474 // IO functions //////////////////////////////////////////////////////////////////////////////////////// | |
| 2475 | |
| 2476 JVM_LEAF(jint, JVM_Open(const char *fname, jint flags, jint mode)) | |
| 2477 JVMWrapper2("JVM_Open (%s)", fname); | |
| 2478 | |
| 2479 //%note jvm_r6 | |
|
1980
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ikrylov
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diff
changeset
|
2480 int result = os::open(fname, flags, mode); |
| 0 | 2481 if (result >= 0) { |
| 2482 return result; | |
| 2483 } else { | |
| 2484 switch(errno) { | |
| 2485 case EEXIST: | |
| 2486 return JVM_EEXIST; | |
| 2487 default: | |
| 2488 return -1; | |
| 2489 } | |
| 2490 } | |
| 2491 JVM_END | |
| 2492 | |
| 2493 | |
| 2494 JVM_LEAF(jint, JVM_Close(jint fd)) | |
| 2495 JVMWrapper2("JVM_Close (0x%x)", fd); | |
| 2496 //%note jvm_r6 | |
|
1980
828eafbd85cc
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diff
changeset
|
2497 return os::close(fd); |
| 0 | 2498 JVM_END |
| 2499 | |
| 2500 | |
| 2501 JVM_LEAF(jint, JVM_Read(jint fd, char *buf, jint nbytes)) | |
| 2502 JVMWrapper2("JVM_Read (0x%x)", fd); | |
| 2503 | |
| 2504 //%note jvm_r6 | |
|
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828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
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parents:
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diff
changeset
|
2505 return (jint)os::restartable_read(fd, buf, nbytes); |
| 0 | 2506 JVM_END |
| 2507 | |
| 2508 | |
| 2509 JVM_LEAF(jint, JVM_Write(jint fd, char *buf, jint nbytes)) | |
| 2510 JVMWrapper2("JVM_Write (0x%x)", fd); | |
| 2511 | |
| 2512 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
2513 return (jint)os::write(fd, buf, nbytes); |
| 0 | 2514 JVM_END |
| 2515 | |
| 2516 | |
| 2517 JVM_LEAF(jint, JVM_Available(jint fd, jlong *pbytes)) | |
| 2518 JVMWrapper2("JVM_Available (0x%x)", fd); | |
| 2519 //%note jvm_r6 | |
|
1980
828eafbd85cc
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parents:
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diff
changeset
|
2520 return os::available(fd, pbytes); |
| 0 | 2521 JVM_END |
| 2522 | |
| 2523 | |
| 2524 JVM_LEAF(jlong, JVM_Lseek(jint fd, jlong offset, jint whence)) | |
| 2525 JVMWrapper4("JVM_Lseek (0x%x, %Ld, %d)", fd, offset, whence); | |
| 2526 //%note jvm_r6 | |
|
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828eafbd85cc
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diff
changeset
|
2527 return os::lseek(fd, offset, whence); |
| 0 | 2528 JVM_END |
| 2529 | |
| 2530 | |
| 2531 JVM_LEAF(jint, JVM_SetLength(jint fd, jlong length)) | |
| 2532 JVMWrapper3("JVM_SetLength (0x%x, %Ld)", fd, length); | |
|
1980
828eafbd85cc
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ikrylov
parents:
1972
diff
changeset
|
2533 return os::ftruncate(fd, length); |
| 0 | 2534 JVM_END |
| 2535 | |
| 2536 | |
| 2537 JVM_LEAF(jint, JVM_Sync(jint fd)) | |
| 2538 JVMWrapper2("JVM_Sync (0x%x)", fd); | |
| 2539 //%note jvm_r6 | |
|
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828eafbd85cc
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ikrylov
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diff
changeset
|
2540 return os::fsync(fd); |
| 0 | 2541 JVM_END |
| 2542 | |
| 2543 | |
| 2544 // Printing support ////////////////////////////////////////////////// | |
| 2545 extern "C" { | |
| 2546 | |
| 2547 int jio_vsnprintf(char *str, size_t count, const char *fmt, va_list args) { | |
| 2548 // see bug 4399518, 4417214 | |
| 2549 if ((intptr_t)count <= 0) return -1; | |
| 2550 return vsnprintf(str, count, fmt, args); | |
| 2551 } | |
| 2552 | |
| 2553 | |
| 2554 int jio_snprintf(char *str, size_t count, const char *fmt, ...) { | |
| 2555 va_list args; | |
| 2556 int len; | |
| 2557 va_start(args, fmt); | |
| 2558 len = jio_vsnprintf(str, count, fmt, args); | |
| 2559 va_end(args); | |
| 2560 return len; | |
| 2561 } | |
| 2562 | |
| 2563 | |
| 2564 int jio_fprintf(FILE* f, const char *fmt, ...) { | |
| 2565 int len; | |
| 2566 va_list args; | |
| 2567 va_start(args, fmt); | |
| 2568 len = jio_vfprintf(f, fmt, args); | |
| 2569 va_end(args); | |
| 2570 return len; | |
| 2571 } | |
| 2572 | |
| 2573 | |
| 2574 int jio_vfprintf(FILE* f, const char *fmt, va_list args) { | |
| 2575 if (Arguments::vfprintf_hook() != NULL) { | |
| 2576 return Arguments::vfprintf_hook()(f, fmt, args); | |
| 2577 } else { | |
| 2578 return vfprintf(f, fmt, args); | |
| 2579 } | |
| 2580 } | |
| 2581 | |
| 2582 | |
| 2191 | 2583 JNIEXPORT int jio_printf(const char *fmt, ...) { |
| 0 | 2584 int len; |
| 2585 va_list args; | |
| 2586 va_start(args, fmt); | |
| 2587 len = jio_vfprintf(defaultStream::output_stream(), fmt, args); | |
| 2588 va_end(args); | |
| 2589 return len; | |
| 2590 } | |
| 2591 | |
| 2592 | |
| 2593 // HotSpot specific jio method | |
| 2594 void jio_print(const char* s) { | |
| 2595 // Try to make this function as atomic as possible. | |
| 2596 if (Arguments::vfprintf_hook() != NULL) { | |
| 2597 jio_fprintf(defaultStream::output_stream(), "%s", s); | |
| 2598 } else { | |
|
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|
2599 // Make an unused local variable to avoid warning from gcc 4.x compiler. |
|
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|
2600 size_t count = ::write(defaultStream::output_fd(), s, (int)strlen(s)); |
| 0 | 2601 } |
| 2602 } | |
| 2603 | |
| 2604 } // Extern C | |
| 2605 | |
| 2606 // java.lang.Thread ////////////////////////////////////////////////////////////////////////////// | |
| 2607 | |
| 2608 // In most of the JVM Thread support functions we need to be sure to lock the Threads_lock | |
| 2609 // to prevent the target thread from exiting after we have a pointer to the C++ Thread or | |
| 2610 // OSThread objects. The exception to this rule is when the target object is the thread | |
| 2611 // doing the operation, in which case we know that the thread won't exit until the | |
| 2612 // operation is done (all exits being voluntary). There are a few cases where it is | |
| 2613 // rather silly to do operations on yourself, like resuming yourself or asking whether | |
| 2614 // you are alive. While these can still happen, they are not subject to deadlocks if | |
| 2615 // the lock is held while the operation occurs (this is not the case for suspend, for | |
| 2616 // instance), and are very unlikely. Because IsAlive needs to be fast and its | |
| 2617 // implementation is local to this file, we always lock Threads_lock for that one. | |
| 2618 | |
| 2619 static void thread_entry(JavaThread* thread, TRAPS) { | |
| 2620 HandleMark hm(THREAD); | |
| 2621 Handle obj(THREAD, thread->threadObj()); | |
| 2622 JavaValue result(T_VOID); | |
| 2623 JavaCalls::call_virtual(&result, | |
| 2624 obj, | |
| 1142 | 2625 KlassHandle(THREAD, SystemDictionary::Thread_klass()), |
|
2177
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6990754: Use native memory and reference counting to implement SymbolTable
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|
2626 vmSymbols::run_method_name(), |
|
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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2162
diff
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|
2627 vmSymbols::void_method_signature(), |
| 0 | 2628 THREAD); |
| 2629 } | |
| 2630 | |
| 2631 | |
| 2632 JVM_ENTRY(void, JVM_StartThread(JNIEnv* env, jobject jthread)) | |
| 2633 JVMWrapper("JVM_StartThread"); | |
| 2634 JavaThread *native_thread = NULL; | |
| 2635 | |
| 2636 // We cannot hold the Threads_lock when we throw an exception, | |
| 2637 // due to rank ordering issues. Example: we might need to grab the | |
| 2638 // Heap_lock while we construct the exception. | |
| 2639 bool throw_illegal_thread_state = false; | |
| 2640 | |
| 2641 // We must release the Threads_lock before we can post a jvmti event | |
| 2642 // in Thread::start. | |
| 2643 { | |
| 2644 // Ensure that the C++ Thread and OSThread structures aren't freed before | |
| 2645 // we operate. | |
| 2646 MutexLocker mu(Threads_lock); | |
| 2647 | |
|
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diff
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|
2648 // Since JDK 5 the java.lang.Thread threadStatus is used to prevent |
|
ccfcb502af3f
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diff
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|
2649 // re-starting an already started thread, so we should usually find |
|
ccfcb502af3f
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diff
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|
2650 // that the JavaThread is null. However for a JNI attached thread |
|
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diff
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|
2651 // there is a small window between the Thread object being created |
|
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6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2652 // (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
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diff
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|
2653 // have to check for this |
|
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diff
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|
2654 if (java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)) != NULL) { |
|
ccfcb502af3f
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diff
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|
2655 throw_illegal_thread_state = true; |
| 0 | 2656 } else { |
|
2162
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
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diff
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|
2657 // We could also check the stillborn flag to see if this thread was already stopped, but |
|
ccfcb502af3f
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diff
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|
2658 // for historical reasons we let the thread detect that itself when it starts running |
|
ccfcb502af3f
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diff
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|
2659 |
| 0 | 2660 jlong size = |
| 2661 java_lang_Thread::stackSize(JNIHandles::resolve_non_null(jthread)); | |
| 2662 // Allocate the C++ Thread structure and create the native thread. The | |
| 2663 // stack size retrieved from java is signed, but the constructor takes | |
| 2664 // size_t (an unsigned type), so avoid passing negative values which would | |
| 2665 // result in really large stacks. | |
| 2666 size_t sz = size > 0 ? (size_t) size : 0; | |
| 2667 native_thread = new JavaThread(&thread_entry, sz); | |
| 2668 | |
| 2669 // At this point it may be possible that no osthread was created for the | |
| 2670 // JavaThread due to lack of memory. Check for this situation and throw | |
| 2671 // an exception if necessary. Eventually we may want to change this so | |
| 2672 // that we only grab the lock if the thread was created successfully - | |
| 2673 // then we can also do this check and throw the exception in the | |
| 2674 // JavaThread constructor. | |
| 2675 if (native_thread->osthread() != NULL) { | |
| 2676 // Note: the current thread is not being used within "prepare". | |
| 2677 native_thread->prepare(jthread); | |
| 2678 } | |
| 2679 } | |
| 2680 } | |
| 2681 | |
| 2682 if (throw_illegal_thread_state) { | |
| 2683 THROW(vmSymbols::java_lang_IllegalThreadStateException()); | |
| 2684 } | |
| 2685 | |
| 2686 assert(native_thread != NULL, "Starting null thread?"); | |
| 2687 | |
| 2688 if (native_thread->osthread() == NULL) { | |
| 2689 // No one should hold a reference to the 'native_thread'. | |
| 2690 delete native_thread; | |
| 2691 if (JvmtiExport::should_post_resource_exhausted()) { | |
| 2692 JvmtiExport::post_resource_exhausted( | |
| 2693 JVMTI_RESOURCE_EXHAUSTED_OOM_ERROR | JVMTI_RESOURCE_EXHAUSTED_THREADS, | |
| 2694 "unable to create new native thread"); | |
| 2695 } | |
| 2696 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), | |
| 2697 "unable to create new native thread"); | |
| 2698 } | |
| 2699 | |
| 2700 Thread::start(native_thread); | |
| 2701 | |
| 2702 JVM_END | |
| 2703 | |
| 2704 // JVM_Stop is implemented using a VM_Operation, so threads are forced to safepoints | |
| 2705 // before the quasi-asynchronous exception is delivered. This is a little obtrusive, | |
| 2706 // but is thought to be reliable and simple. In the case, where the receiver is the | |
|
2162
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diff
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|
2707 // same thread as the sender, no safepoint is needed. |
| 0 | 2708 JVM_ENTRY(void, JVM_StopThread(JNIEnv* env, jobject jthread, jobject throwable)) |
| 2709 JVMWrapper("JVM_StopThread"); | |
| 2710 | |
| 2711 oop java_throwable = JNIHandles::resolve(throwable); | |
| 2712 if (java_throwable == NULL) { | |
| 2713 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 2714 } | |
| 2715 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2716 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
| 2717 Events::log("JVM_StopThread thread JavaThread " INTPTR_FORMAT " as oop " INTPTR_FORMAT " [exception " INTPTR_FORMAT "]", receiver, (address)java_thread, throwable); | |
|
2162
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diff
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|
2718 // First check if thread is alive |
| 0 | 2719 if (receiver != NULL) { |
| 2720 // Check if exception is getting thrown at self (use oop equality, since the | |
| 2721 // target object might exit) | |
| 2722 if (java_thread == thread->threadObj()) { | |
| 2723 THROW_OOP(java_throwable); | |
| 2724 } else { | |
| 2725 // Enques a VM_Operation to stop all threads and then deliver the exception... | |
| 2726 Thread::send_async_exception(java_thread, JNIHandles::resolve(throwable)); | |
| 2727 } | |
| 2728 } | |
|
2162
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1980
diff
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|
2729 else { |
|
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1980
diff
changeset
|
2730 // Either: |
|
ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
dholmes
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1980
diff
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|
2731 // - target thread has not been started before being stopped, or |
|
ccfcb502af3f
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dholmes
parents:
1980
diff
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|
2732 // - target thread already terminated |
|
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
|
2733 // 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
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1980
diff
changeset
|
2734 // but that is overkill as it doesn't matter. We must set the |
|
ccfcb502af3f
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dholmes
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1980
diff
changeset
|
2735 // stillborn flag for the first case, and if the thread has already |
|
ccfcb502af3f
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dholmes
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1980
diff
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|
2736 // exited setting this flag has no affect |
|
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dholmes
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1980
diff
changeset
|
2737 java_lang_Thread::set_stillborn(java_thread); |
|
ccfcb502af3f
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dholmes
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diff
changeset
|
2738 } |
| 0 | 2739 JVM_END |
| 2740 | |
| 2741 | |
| 2742 JVM_ENTRY(jboolean, JVM_IsThreadAlive(JNIEnv* env, jobject jthread)) | |
| 2743 JVMWrapper("JVM_IsThreadAlive"); | |
| 2744 | |
| 2745 oop thread_oop = JNIHandles::resolve_non_null(jthread); | |
| 2746 return java_lang_Thread::is_alive(thread_oop); | |
| 2747 JVM_END | |
| 2748 | |
| 2749 | |
| 2750 JVM_ENTRY(void, JVM_SuspendThread(JNIEnv* env, jobject jthread)) | |
| 2751 JVMWrapper("JVM_SuspendThread"); | |
| 2752 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2753 JavaThread* receiver = java_lang_Thread::thread(java_thread); | |
| 2754 | |
| 2755 if (receiver != NULL) { | |
| 2756 // thread has run and has not exited (still on threads list) | |
| 2757 | |
| 2758 { | |
| 2759 MutexLockerEx ml(receiver->SR_lock(), Mutex::_no_safepoint_check_flag); | |
| 2760 if (receiver->is_external_suspend()) { | |
| 2761 // Don't allow nested external suspend requests. We can't return | |
| 2762 // an error from this interface so just ignore the problem. | |
| 2763 return; | |
| 2764 } | |
| 2765 if (receiver->is_exiting()) { // thread is in the process of exiting | |
| 2766 return; | |
| 2767 } | |
| 2768 receiver->set_external_suspend(); | |
| 2769 } | |
| 2770 | |
| 2771 // java_suspend() will catch threads in the process of exiting | |
| 2772 // and will ignore them. | |
| 2773 receiver->java_suspend(); | |
| 2774 | |
| 2775 // It would be nice to have the following assertion in all the | |
| 2776 // time, but it is possible for a racing resume request to have | |
| 2777 // resumed this thread right after we suspended it. Temporarily | |
| 2778 // enable this assertion if you are chasing a different kind of | |
| 2779 // bug. | |
| 2780 // | |
| 2781 // assert(java_lang_Thread::thread(receiver->threadObj()) == NULL || | |
| 2782 // receiver->is_being_ext_suspended(), "thread is not suspended"); | |
| 2783 } | |
| 2784 JVM_END | |
| 2785 | |
| 2786 | |
| 2787 JVM_ENTRY(void, JVM_ResumeThread(JNIEnv* env, jobject jthread)) | |
| 2788 JVMWrapper("JVM_ResumeThread"); | |
| 2789 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. | |
| 2790 // We need to *always* get the threads lock here, since this operation cannot be allowed during | |
| 2791 // a safepoint. The safepoint code relies on suspending a thread to examine its state. If other | |
| 2792 // threads randomly resumes threads, then a thread might not be suspended when the safepoint code | |
| 2793 // looks at it. | |
| 2794 MutexLocker ml(Threads_lock); | |
| 2795 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 2796 if (thr != NULL) { | |
| 2797 // the thread has run and is not in the process of exiting | |
| 2798 thr->java_resume(); | |
| 2799 } | |
| 2800 JVM_END | |
| 2801 | |
| 2802 | |
| 2803 JVM_ENTRY(void, JVM_SetThreadPriority(JNIEnv* env, jobject jthread, jint prio)) | |
| 2804 JVMWrapper("JVM_SetThreadPriority"); | |
| 2805 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 2806 MutexLocker ml(Threads_lock); | |
| 2807 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2808 java_lang_Thread::set_priority(java_thread, (ThreadPriority)prio); | |
| 2809 JavaThread* thr = java_lang_Thread::thread(java_thread); | |
| 2810 if (thr != NULL) { // Thread not yet started; priority pushed down when it is | |
| 2811 Thread::set_priority(thr, (ThreadPriority)prio); | |
| 2812 } | |
| 2813 JVM_END | |
| 2814 | |
| 2815 | |
| 2816 JVM_ENTRY(void, JVM_Yield(JNIEnv *env, jclass threadClass)) | |
| 2817 JVMWrapper("JVM_Yield"); | |
| 2818 if (os::dont_yield()) return; | |
|
1324
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1144
diff
changeset
|
2819 HS_DTRACE_PROBE0(hotspot, thread__yield); |
| 0 | 2820 // When ConvertYieldToSleep is off (default), this matches the classic VM use of yield. |
| 2821 // Critical for similar threading behaviour | |
| 2822 if (ConvertYieldToSleep) { | |
| 2823 os::sleep(thread, MinSleepInterval, false); | |
| 2824 } else { | |
| 2825 os::yield(); | |
| 2826 } | |
| 2827 JVM_END | |
| 2828 | |
| 2829 | |
| 2830 JVM_ENTRY(void, JVM_Sleep(JNIEnv* env, jclass threadClass, jlong millis)) | |
| 2831 JVMWrapper("JVM_Sleep"); | |
| 2832 | |
| 2833 if (millis < 0) { | |
| 2834 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "timeout value is negative"); | |
| 2835 } | |
| 2836 | |
| 2837 if (Thread::is_interrupted (THREAD, true) && !HAS_PENDING_EXCEPTION) { | |
| 2838 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 2839 } | |
| 2840 | |
| 2841 // Save current thread state and restore it at the end of this block. | |
| 2842 // And set new thread state to SLEEPING. | |
| 2843 JavaThreadSleepState jtss(thread); | |
| 2844 | |
|
1324
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1144
diff
changeset
|
2845 HS_DTRACE_PROBE1(hotspot, thread__sleep__begin, millis); |
|
e392695de029
6935224: Adding new DTrace probes to work with Palantir
fparain
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1144
diff
changeset
|
2846 |
| 0 | 2847 if (millis == 0) { |
| 2848 // When ConvertSleepToYield is on, this matches the classic VM implementation of | |
| 2849 // JVM_Sleep. Critical for similar threading behaviour (Win32) | |
| 2850 // It appears that in certain GUI contexts, it may be beneficial to do a short sleep | |
| 2851 // for SOLARIS | |
| 2852 if (ConvertSleepToYield) { | |
| 2853 os::yield(); | |
| 2854 } else { | |
| 2855 ThreadState old_state = thread->osthread()->get_state(); | |
| 2856 thread->osthread()->set_state(SLEEPING); | |
| 2857 os::sleep(thread, MinSleepInterval, false); | |
| 2858 thread->osthread()->set_state(old_state); | |
| 2859 } | |
| 2860 } else { | |
| 2861 ThreadState old_state = thread->osthread()->get_state(); | |
| 2862 thread->osthread()->set_state(SLEEPING); | |
| 2863 if (os::sleep(thread, millis, true) == OS_INTRPT) { | |
| 2864 // An asynchronous exception (e.g., ThreadDeathException) could have been thrown on | |
| 2865 // us while we were sleeping. We do not overwrite those. | |
| 2866 if (!HAS_PENDING_EXCEPTION) { | |
|
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1144
diff
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|
2867 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,1); |
| 0 | 2868 // TODO-FIXME: THROW_MSG returns which means we will not call set_state() |
| 2869 // to properly restore the thread state. That's likely wrong. | |
| 2870 THROW_MSG(vmSymbols::java_lang_InterruptedException(), "sleep interrupted"); | |
| 2871 } | |
| 2872 } | |
| 2873 thread->osthread()->set_state(old_state); | |
| 2874 } | |
|
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|
2875 HS_DTRACE_PROBE1(hotspot, thread__sleep__end,0); |
| 0 | 2876 JVM_END |
| 2877 | |
| 2878 JVM_ENTRY(jobject, JVM_CurrentThread(JNIEnv* env, jclass threadClass)) | |
| 2879 JVMWrapper("JVM_CurrentThread"); | |
| 2880 oop jthread = thread->threadObj(); | |
| 2881 assert (thread != NULL, "no current thread!"); | |
| 2882 return JNIHandles::make_local(env, jthread); | |
| 2883 JVM_END | |
| 2884 | |
| 2885 | |
| 2886 JVM_ENTRY(jint, JVM_CountStackFrames(JNIEnv* env, jobject jthread)) | |
| 2887 JVMWrapper("JVM_CountStackFrames"); | |
| 2888 | |
| 2889 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 2890 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2891 bool throw_illegal_thread_state = false; | |
| 2892 int count = 0; | |
| 2893 | |
| 2894 { | |
| 2895 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 2896 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 2897 // acquire of the lock | |
| 2898 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 2899 | |
| 2900 if (thr == NULL) { | |
| 2901 // do nothing | |
| 2902 } else if(! thr->is_external_suspend() || ! thr->frame_anchor()->walkable()) { | |
| 2903 // Check whether this java thread has been suspended already. If not, throws | |
| 2904 // IllegalThreadStateException. We defer to throw that exception until | |
| 2905 // Threads_lock is released since loading exception class has to leave VM. | |
| 2906 // The correct way to test a thread is actually suspended is | |
| 2907 // wait_for_ext_suspend_completion(), but we can't call that while holding | |
| 2908 // the Threads_lock. The above tests are sufficient for our purposes | |
| 2909 // provided the walkability of the stack is stable - which it isn't | |
| 2910 // 100% but close enough for most practical purposes. | |
| 2911 throw_illegal_thread_state = true; | |
| 2912 } else { | |
| 2913 // Count all java activation, i.e., number of vframes | |
| 2914 for(vframeStream vfst(thr); !vfst.at_end(); vfst.next()) { | |
| 2915 // Native frames are not counted | |
| 2916 if (!vfst.method()->is_native()) count++; | |
| 2917 } | |
| 2918 } | |
| 2919 } | |
| 2920 | |
| 2921 if (throw_illegal_thread_state) { | |
| 2922 THROW_MSG_0(vmSymbols::java_lang_IllegalThreadStateException(), | |
| 2923 "this thread is not suspended"); | |
| 2924 } | |
| 2925 return count; | |
| 2926 JVM_END | |
| 2927 | |
| 2928 // Consider: A better way to implement JVM_Interrupt() is to acquire | |
| 2929 // Threads_lock to resolve the jthread into a Thread pointer, fetch | |
| 2930 // Thread->platformevent, Thread->native_thr, Thread->parker, etc., | |
| 2931 // drop Threads_lock, and the perform the unpark() and thr_kill() operations | |
| 2932 // outside the critical section. Threads_lock is hot so we want to minimize | |
| 2933 // the hold-time. A cleaner interface would be to decompose interrupt into | |
| 2934 // two steps. The 1st phase, performed under Threads_lock, would return | |
| 2935 // a closure that'd be invoked after Threads_lock was dropped. | |
| 2936 // This tactic is safe as PlatformEvent and Parkers are type-stable (TSM) and | |
| 2937 // admit spurious wakeups. | |
| 2938 | |
| 2939 JVM_ENTRY(void, JVM_Interrupt(JNIEnv* env, jobject jthread)) | |
| 2940 JVMWrapper("JVM_Interrupt"); | |
| 2941 | |
| 2942 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 2943 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2944 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 2945 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 2946 // acquire of the lock | |
| 2947 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 2948 if (thr != NULL) { | |
| 2949 Thread::interrupt(thr); | |
| 2950 } | |
| 2951 JVM_END | |
| 2952 | |
| 2953 | |
| 2954 JVM_QUICK_ENTRY(jboolean, JVM_IsInterrupted(JNIEnv* env, jobject jthread, jboolean clear_interrupted)) | |
| 2955 JVMWrapper("JVM_IsInterrupted"); | |
| 2956 | |
| 2957 // Ensure that the C++ Thread and OSThread structures aren't freed before we operate | |
| 2958 oop java_thread = JNIHandles::resolve_non_null(jthread); | |
| 2959 MutexLockerEx ml(thread->threadObj() == java_thread ? NULL : Threads_lock); | |
| 2960 // We need to re-resolve the java_thread, since a GC might have happened during the | |
| 2961 // acquire of the lock | |
| 2962 JavaThread* thr = java_lang_Thread::thread(JNIHandles::resolve_non_null(jthread)); | |
| 2963 if (thr == NULL) { | |
| 2964 return JNI_FALSE; | |
| 2965 } else { | |
| 2966 return (jboolean) Thread::is_interrupted(thr, clear_interrupted != 0); | |
| 2967 } | |
| 2968 JVM_END | |
| 2969 | |
| 2970 | |
| 2971 // Return true iff the current thread has locked the object passed in | |
| 2972 | |
| 2973 JVM_ENTRY(jboolean, JVM_HoldsLock(JNIEnv* env, jclass threadClass, jobject obj)) | |
| 2974 JVMWrapper("JVM_HoldsLock"); | |
| 2975 assert(THREAD->is_Java_thread(), "sanity check"); | |
| 2976 if (obj == NULL) { | |
| 2977 THROW_(vmSymbols::java_lang_NullPointerException(), JNI_FALSE); | |
| 2978 } | |
| 2979 Handle h_obj(THREAD, JNIHandles::resolve(obj)); | |
| 2980 return ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, h_obj); | |
| 2981 JVM_END | |
| 2982 | |
| 2983 | |
| 2984 JVM_ENTRY(void, JVM_DumpAllStacks(JNIEnv* env, jclass)) | |
| 2985 JVMWrapper("JVM_DumpAllStacks"); | |
| 2986 VM_PrintThreads op; | |
| 2987 VMThread::execute(&op); | |
| 2988 if (JvmtiExport::should_post_data_dump()) { | |
| 2989 JvmtiExport::post_data_dump(); | |
| 2990 } | |
| 2991 JVM_END | |
| 2992 | |
| 2993 | |
| 2994 // java.lang.SecurityManager /////////////////////////////////////////////////////////////////////// | |
| 2995 | |
| 2996 static bool is_trusted_frame(JavaThread* jthread, vframeStream* vfst) { | |
| 2997 assert(jthread->is_Java_thread(), "must be a Java thread"); | |
| 2998 if (jthread->privileged_stack_top() == NULL) return false; | |
| 2999 if (jthread->privileged_stack_top()->frame_id() == vfst->frame_id()) { | |
| 3000 oop loader = jthread->privileged_stack_top()->class_loader(); | |
| 3001 if (loader == NULL) return true; | |
| 3002 bool trusted = java_lang_ClassLoader::is_trusted_loader(loader); | |
| 3003 if (trusted) return true; | |
| 3004 } | |
| 3005 return false; | |
| 3006 } | |
| 3007 | |
| 3008 JVM_ENTRY(jclass, JVM_CurrentLoadedClass(JNIEnv *env)) | |
| 3009 JVMWrapper("JVM_CurrentLoadedClass"); | |
| 3010 ResourceMark rm(THREAD); | |
| 3011 | |
| 3012 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3013 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3014 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3015 if (trusted) return NULL; | |
| 3016 | |
| 3017 methodOop m = vfst.method(); | |
| 3018 if (!m->is_native()) { | |
| 3019 klassOop holder = m->method_holder(); | |
| 3020 oop loader = instanceKlass::cast(holder)->class_loader(); | |
| 3021 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { | |
| 3022 return (jclass) JNIHandles::make_local(env, Klass::cast(holder)->java_mirror()); | |
| 3023 } | |
| 3024 } | |
| 3025 } | |
| 3026 return NULL; | |
| 3027 JVM_END | |
| 3028 | |
| 3029 | |
| 3030 JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env)) | |
| 3031 JVMWrapper("JVM_CurrentClassLoader"); | |
| 3032 ResourceMark rm(THREAD); | |
| 3033 | |
| 3034 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3035 | |
| 3036 // if a method in a class in a trusted loader is in a doPrivileged, return NULL | |
| 3037 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3038 if (trusted) return NULL; | |
| 3039 | |
| 3040 methodOop m = vfst.method(); | |
| 3041 if (!m->is_native()) { | |
| 3042 klassOop holder = m->method_holder(); | |
| 3043 assert(holder->is_klass(), "just checking"); | |
| 3044 oop loader = instanceKlass::cast(holder)->class_loader(); | |
| 3045 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { | |
| 3046 return JNIHandles::make_local(env, loader); | |
| 3047 } | |
| 3048 } | |
| 3049 } | |
| 3050 return NULL; | |
| 3051 JVM_END | |
| 3052 | |
| 3053 | |
| 3054 // Utility object for collecting method holders walking down the stack | |
| 3055 class KlassLink: public ResourceObj { | |
| 3056 public: | |
| 3057 KlassHandle klass; | |
| 3058 KlassLink* next; | |
| 3059 | |
| 3060 KlassLink(KlassHandle k) { klass = k; next = NULL; } | |
| 3061 }; | |
| 3062 | |
| 3063 | |
| 3064 JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env)) | |
| 3065 JVMWrapper("JVM_GetClassContext"); | |
| 3066 ResourceMark rm(THREAD); | |
| 3067 JvmtiVMObjectAllocEventCollector oam; | |
| 3068 // Collect linked list of (handles to) method holders | |
| 3069 KlassLink* first = NULL; | |
| 3070 KlassLink* last = NULL; | |
| 3071 int depth = 0; | |
| 3072 | |
| 3073 for(vframeStream vfst(thread); !vfst.at_end(); vfst.security_get_caller_frame(1)) { | |
| 3074 // Native frames are not returned | |
| 3075 if (!vfst.method()->is_native()) { | |
| 3076 klassOop holder = vfst.method()->method_holder(); | |
| 3077 assert(holder->is_klass(), "just checking"); | |
| 3078 depth++; | |
| 3079 KlassLink* l = new KlassLink(KlassHandle(thread, holder)); | |
| 3080 if (first == NULL) { | |
| 3081 first = last = l; | |
| 3082 } else { | |
| 3083 last->next = l; | |
| 3084 last = l; | |
| 3085 } | |
| 3086 } | |
| 3087 } | |
| 3088 | |
| 3089 // Create result array of type [Ljava/lang/Class; | |
| 1142 | 3090 objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), depth, CHECK_NULL); |
| 0 | 3091 // Fill in mirrors corresponding to method holders |
| 3092 int index = 0; | |
| 3093 while (first != NULL) { | |
| 3094 result->obj_at_put(index++, Klass::cast(first->klass())->java_mirror()); | |
| 3095 first = first->next; | |
| 3096 } | |
| 3097 assert(index == depth, "just checking"); | |
| 3098 | |
| 3099 return (jobjectArray) JNIHandles::make_local(env, result); | |
| 3100 JVM_END | |
| 3101 | |
| 3102 | |
| 3103 JVM_ENTRY(jint, JVM_ClassDepth(JNIEnv *env, jstring name)) | |
| 3104 JVMWrapper("JVM_ClassDepth"); | |
| 3105 ResourceMark rm(THREAD); | |
| 3106 Handle h_name (THREAD, JNIHandles::resolve_non_null(name)); | |
| 3107 Handle class_name_str = java_lang_String::internalize_classname(h_name, CHECK_0); | |
| 3108 | |
| 3109 const char* str = java_lang_String::as_utf8_string(class_name_str()); | |
|
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3110 TempNewSymbol class_name_sym = SymbolTable::probe(str, (int)strlen(str)); |
|
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|
3111 if (class_name_sym == NULL) { |
| 0 | 3112 return -1; |
| 3113 } | |
| 3114 | |
| 3115 int depth = 0; | |
| 3116 | |
| 3117 for(vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3118 if (!vfst.method()->is_native()) { | |
| 3119 klassOop holder = vfst.method()->method_holder(); | |
| 3120 assert(holder->is_klass(), "just checking"); | |
|
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3121 if (instanceKlass::cast(holder)->name() == class_name_sym) { |
| 0 | 3122 return depth; |
| 3123 } | |
| 3124 depth++; | |
| 3125 } | |
| 3126 } | |
| 3127 return -1; | |
| 3128 JVM_END | |
| 3129 | |
| 3130 | |
| 3131 JVM_ENTRY(jint, JVM_ClassLoaderDepth(JNIEnv *env)) | |
| 3132 JVMWrapper("JVM_ClassLoaderDepth"); | |
| 3133 ResourceMark rm(THREAD); | |
| 3134 int depth = 0; | |
| 3135 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3136 // if a method in a class in a trusted loader is in a doPrivileged, return -1 | |
| 3137 bool trusted = is_trusted_frame(thread, &vfst); | |
| 3138 if (trusted) return -1; | |
| 3139 | |
| 3140 methodOop m = vfst.method(); | |
| 3141 if (!m->is_native()) { | |
| 3142 klassOop holder = m->method_holder(); | |
| 3143 assert(holder->is_klass(), "just checking"); | |
| 3144 oop loader = instanceKlass::cast(holder)->class_loader(); | |
| 3145 if (loader != NULL && !java_lang_ClassLoader::is_trusted_loader(loader)) { | |
| 3146 return depth; | |
| 3147 } | |
| 3148 depth++; | |
| 3149 } | |
| 3150 } | |
| 3151 return -1; | |
| 3152 JVM_END | |
| 3153 | |
| 3154 | |
| 3155 // java.lang.Package //////////////////////////////////////////////////////////////// | |
| 3156 | |
| 3157 | |
| 3158 JVM_ENTRY(jstring, JVM_GetSystemPackage(JNIEnv *env, jstring name)) | |
| 3159 JVMWrapper("JVM_GetSystemPackage"); | |
| 3160 ResourceMark rm(THREAD); | |
| 3161 JvmtiVMObjectAllocEventCollector oam; | |
| 3162 char* str = java_lang_String::as_utf8_string(JNIHandles::resolve_non_null(name)); | |
| 3163 oop result = ClassLoader::get_system_package(str, CHECK_NULL); | |
| 3164 return (jstring) JNIHandles::make_local(result); | |
| 3165 JVM_END | |
| 3166 | |
| 3167 | |
| 3168 JVM_ENTRY(jobjectArray, JVM_GetSystemPackages(JNIEnv *env)) | |
| 3169 JVMWrapper("JVM_GetSystemPackages"); | |
| 3170 JvmtiVMObjectAllocEventCollector oam; | |
| 3171 objArrayOop result = ClassLoader::get_system_packages(CHECK_NULL); | |
| 3172 return (jobjectArray) JNIHandles::make_local(result); | |
| 3173 JVM_END | |
| 3174 | |
| 3175 | |
| 3176 // ObjectInputStream /////////////////////////////////////////////////////////////// | |
| 3177 | |
| 3178 bool force_verify_field_access(klassOop current_class, klassOop field_class, AccessFlags access, bool classloader_only) { | |
| 3179 if (current_class == NULL) { | |
| 3180 return true; | |
| 3181 } | |
| 3182 if ((current_class == field_class) || access.is_public()) { | |
| 3183 return true; | |
| 3184 } | |
| 3185 | |
| 3186 if (access.is_protected()) { | |
| 3187 // See if current_class is a subclass of field_class | |
| 3188 if (Klass::cast(current_class)->is_subclass_of(field_class)) { | |
| 3189 return true; | |
| 3190 } | |
| 3191 } | |
| 3192 | |
| 3193 return (!access.is_private() && instanceKlass::cast(current_class)->is_same_class_package(field_class)); | |
| 3194 } | |
| 3195 | |
| 3196 | |
| 3197 // JVM_AllocateNewObject and JVM_AllocateNewArray are unused as of 1.4 | |
| 3198 JVM_ENTRY(jobject, JVM_AllocateNewObject(JNIEnv *env, jobject receiver, jclass currClass, jclass initClass)) | |
| 3199 JVMWrapper("JVM_AllocateNewObject"); | |
| 3200 JvmtiVMObjectAllocEventCollector oam; | |
| 3201 // Receiver is not used | |
| 3202 oop curr_mirror = JNIHandles::resolve_non_null(currClass); | |
| 3203 oop init_mirror = JNIHandles::resolve_non_null(initClass); | |
| 3204 | |
| 3205 // Cannot instantiate primitive types | |
| 3206 if (java_lang_Class::is_primitive(curr_mirror) || java_lang_Class::is_primitive(init_mirror)) { | |
| 3207 ResourceMark rm(THREAD); | |
| 3208 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3209 } | |
| 3210 | |
| 3211 // Arrays not allowed here, must use JVM_AllocateNewArray | |
| 3212 if (Klass::cast(java_lang_Class::as_klassOop(curr_mirror))->oop_is_javaArray() || | |
| 3213 Klass::cast(java_lang_Class::as_klassOop(init_mirror))->oop_is_javaArray()) { | |
| 3214 ResourceMark rm(THREAD); | |
| 3215 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3216 } | |
| 3217 | |
| 3218 instanceKlassHandle curr_klass (THREAD, java_lang_Class::as_klassOop(curr_mirror)); | |
| 3219 instanceKlassHandle init_klass (THREAD, java_lang_Class::as_klassOop(init_mirror)); | |
| 3220 | |
| 3221 assert(curr_klass->is_subclass_of(init_klass()), "just checking"); | |
| 3222 | |
| 3223 // Interfaces, abstract classes, and java.lang.Class classes cannot be instantiated directly. | |
| 3224 curr_klass->check_valid_for_instantiation(false, CHECK_NULL); | |
| 3225 | |
| 3226 // Make sure klass is initialized, since we are about to instantiate one of them. | |
| 3227 curr_klass->initialize(CHECK_NULL); | |
| 3228 | |
| 3229 methodHandle m (THREAD, | |
| 3230 init_klass->find_method(vmSymbols::object_initializer_name(), | |
| 3231 vmSymbols::void_method_signature())); | |
| 3232 if (m.is_null()) { | |
| 3233 ResourceMark rm(THREAD); | |
| 3234 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), | |
| 3235 methodOopDesc::name_and_sig_as_C_string(Klass::cast(init_klass()), | |
| 3236 vmSymbols::object_initializer_name(), | |
| 3237 vmSymbols::void_method_signature())); | |
| 3238 } | |
| 3239 | |
| 3240 if (curr_klass == init_klass && !m->is_public()) { | |
| 3241 // Calling the constructor for class 'curr_klass'. | |
| 3242 // Only allow calls to a public no-arg constructor. | |
| 3243 // This path corresponds to creating an Externalizable object. | |
| 3244 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3245 } | |
| 3246 | |
| 3247 if (!force_verify_field_access(curr_klass(), init_klass(), m->access_flags(), false)) { | |
| 3248 // subclass 'curr_klass' does not have access to no-arg constructor of 'initcb' | |
| 3249 THROW_0(vmSymbols::java_lang_IllegalAccessException()); | |
| 3250 } | |
| 3251 | |
| 3252 Handle obj = curr_klass->allocate_instance_handle(CHECK_NULL); | |
| 3253 // Call constructor m. This might call a constructor higher up in the hierachy | |
| 3254 JavaCalls::call_default_constructor(thread, m, obj, CHECK_NULL); | |
| 3255 | |
| 3256 return JNIHandles::make_local(obj()); | |
| 3257 JVM_END | |
| 3258 | |
| 3259 | |
| 3260 JVM_ENTRY(jobject, JVM_AllocateNewArray(JNIEnv *env, jobject obj, jclass currClass, jint length)) | |
| 3261 JVMWrapper("JVM_AllocateNewArray"); | |
| 3262 JvmtiVMObjectAllocEventCollector oam; | |
| 3263 oop mirror = JNIHandles::resolve_non_null(currClass); | |
| 3264 | |
| 3265 if (java_lang_Class::is_primitive(mirror)) { | |
| 3266 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3267 } | |
| 3268 klassOop k = java_lang_Class::as_klassOop(mirror); | |
| 3269 oop result; | |
| 3270 | |
| 3271 if (k->klass_part()->oop_is_typeArray()) { | |
| 3272 // typeArray | |
| 3273 result = typeArrayKlass::cast(k)->allocate(length, CHECK_NULL); | |
| 3274 } else if (k->klass_part()->oop_is_objArray()) { | |
| 3275 // objArray | |
| 3276 objArrayKlassHandle oak(THREAD, k); | |
| 3277 oak->initialize(CHECK_NULL); // make sure class is initialized (matches Classic VM behavior) | |
| 3278 result = oak->allocate(length, CHECK_NULL); | |
| 3279 } else { | |
| 3280 THROW_0(vmSymbols::java_lang_InvalidClassException()); | |
| 3281 } | |
| 3282 return JNIHandles::make_local(env, result); | |
| 3283 JVM_END | |
| 3284 | |
| 3285 | |
| 3286 // Return the first non-null class loader up the execution stack, or null | |
| 3287 // if only code from the null class loader is on the stack. | |
| 3288 | |
| 3289 JVM_ENTRY(jobject, JVM_LatestUserDefinedLoader(JNIEnv *env)) | |
| 3290 for (vframeStream vfst(thread); !vfst.at_end(); vfst.next()) { | |
| 3291 // UseNewReflection | |
| 3292 vfst.skip_reflection_related_frames(); // Only needed for 1.4 reflection | |
| 3293 klassOop holder = vfst.method()->method_holder(); | |
| 3294 oop loader = instanceKlass::cast(holder)->class_loader(); | |
| 3295 if (loader != NULL) { | |
| 3296 return JNIHandles::make_local(env, loader); | |
| 3297 } | |
| 3298 } | |
| 3299 return NULL; | |
| 3300 JVM_END | |
| 3301 | |
| 3302 | |
| 3303 // Load a class relative to the most recent class on the stack with a non-null | |
| 3304 // classloader. | |
| 3305 // This function has been deprecated and should not be considered part of the | |
| 3306 // specified JVM interface. | |
| 3307 | |
| 3308 JVM_ENTRY(jclass, JVM_LoadClass0(JNIEnv *env, jobject receiver, | |
| 3309 jclass currClass, jstring currClassName)) | |
| 3310 JVMWrapper("JVM_LoadClass0"); | |
| 3311 // Receiver is not used | |
| 3312 ResourceMark rm(THREAD); | |
| 3313 | |
| 3314 // Class name argument is not guaranteed to be in internal format | |
| 3315 Handle classname (THREAD, JNIHandles::resolve_non_null(currClassName)); | |
| 3316 Handle string = java_lang_String::internalize_classname(classname, CHECK_NULL); | |
| 3317 | |
| 3318 const char* str = java_lang_String::as_utf8_string(string()); | |
| 3319 | |
|
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|
3320 if (str == NULL || (int)strlen(str) > Symbol::max_length()) { |
| 0 | 3321 // It's impossible to create this class; the name cannot fit |
| 3322 // into the constant pool. | |
| 3323 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), str); | |
| 3324 } | |
| 3325 | |
|
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|
3326 TempNewSymbol name = SymbolTable::new_symbol(str, CHECK_NULL); |
| 0 | 3327 Handle curr_klass (THREAD, JNIHandles::resolve(currClass)); |
| 3328 // Find the most recent class on the stack with a non-null classloader | |
| 3329 oop loader = NULL; | |
| 3330 oop protection_domain = NULL; | |
| 3331 if (curr_klass.is_null()) { | |
| 3332 for (vframeStream vfst(thread); | |
| 3333 !vfst.at_end() && loader == NULL; | |
| 3334 vfst.next()) { | |
| 3335 if (!vfst.method()->is_native()) { | |
| 3336 klassOop holder = vfst.method()->method_holder(); | |
| 3337 loader = instanceKlass::cast(holder)->class_loader(); | |
| 3338 protection_domain = instanceKlass::cast(holder)->protection_domain(); | |
| 3339 } | |
| 3340 } | |
| 3341 } else { | |
| 3342 klassOop curr_klass_oop = java_lang_Class::as_klassOop(curr_klass()); | |
| 3343 loader = instanceKlass::cast(curr_klass_oop)->class_loader(); | |
| 3344 protection_domain = instanceKlass::cast(curr_klass_oop)->protection_domain(); | |
| 3345 } | |
| 3346 Handle h_loader(THREAD, loader); | |
| 3347 Handle h_prot (THREAD, protection_domain); | |
|
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3348 jclass result = find_class_from_class_loader(env, name, true, h_loader, h_prot, |
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3349 false, thread); |
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3350 if (TraceClassResolution && result != NULL) { |
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|
3351 trace_class_resolution(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(result))); |
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3352 } |
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3353 return result; |
| 0 | 3354 JVM_END |
| 3355 | |
| 3356 | |
| 3357 // Array /////////////////////////////////////////////////////////////////////////////////////////// | |
| 3358 | |
| 3359 | |
| 3360 // resolve array handle and check arguments | |
| 3361 static inline arrayOop check_array(JNIEnv *env, jobject arr, bool type_array_only, TRAPS) { | |
| 3362 if (arr == NULL) { | |
| 3363 THROW_0(vmSymbols::java_lang_NullPointerException()); | |
| 3364 } | |
| 3365 oop a = JNIHandles::resolve_non_null(arr); | |
| 3366 if (!a->is_javaArray() || (type_array_only && !a->is_typeArray())) { | |
| 3367 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "Argument is not an array"); | |
| 3368 } | |
| 3369 return arrayOop(a); | |
| 3370 } | |
| 3371 | |
| 3372 | |
| 3373 JVM_ENTRY(jint, JVM_GetArrayLength(JNIEnv *env, jobject arr)) | |
| 3374 JVMWrapper("JVM_GetArrayLength"); | |
| 3375 arrayOop a = check_array(env, arr, false, CHECK_0); | |
| 3376 return a->length(); | |
| 3377 JVM_END | |
| 3378 | |
| 3379 | |
| 3380 JVM_ENTRY(jobject, JVM_GetArrayElement(JNIEnv *env, jobject arr, jint index)) | |
| 3381 JVMWrapper("JVM_Array_Get"); | |
| 3382 JvmtiVMObjectAllocEventCollector oam; | |
| 3383 arrayOop a = check_array(env, arr, false, CHECK_NULL); | |
| 3384 jvalue value; | |
| 3385 BasicType type = Reflection::array_get(&value, a, index, CHECK_NULL); | |
| 3386 oop box = Reflection::box(&value, type, CHECK_NULL); | |
| 3387 return JNIHandles::make_local(env, box); | |
| 3388 JVM_END | |
| 3389 | |
| 3390 | |
| 3391 JVM_ENTRY(jvalue, JVM_GetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jint wCode)) | |
| 3392 JVMWrapper("JVM_GetPrimitiveArrayElement"); | |
| 3393 jvalue value; | |
| 3394 value.i = 0; // to initialize value before getting used in CHECK | |
| 3395 arrayOop a = check_array(env, arr, true, CHECK_(value)); | |
| 3396 assert(a->is_typeArray(), "just checking"); | |
| 3397 BasicType type = Reflection::array_get(&value, a, index, CHECK_(value)); | |
| 3398 BasicType wide_type = (BasicType) wCode; | |
| 3399 if (type != wide_type) { | |
| 3400 Reflection::widen(&value, type, wide_type, CHECK_(value)); | |
| 3401 } | |
| 3402 return value; | |
| 3403 JVM_END | |
| 3404 | |
| 3405 | |
| 3406 JVM_ENTRY(void, JVM_SetArrayElement(JNIEnv *env, jobject arr, jint index, jobject val)) | |
| 3407 JVMWrapper("JVM_SetArrayElement"); | |
| 3408 arrayOop a = check_array(env, arr, false, CHECK); | |
| 3409 oop box = JNIHandles::resolve(val); | |
| 3410 jvalue value; | |
| 3411 value.i = 0; // to initialize value before getting used in CHECK | |
| 3412 BasicType value_type; | |
| 3413 if (a->is_objArray()) { | |
| 3414 // Make sure we do no unbox e.g. java/lang/Integer instances when storing into an object array | |
| 3415 value_type = Reflection::unbox_for_regular_object(box, &value); | |
| 3416 } else { | |
| 3417 value_type = Reflection::unbox_for_primitive(box, &value, CHECK); | |
| 3418 } | |
| 3419 Reflection::array_set(&value, a, index, value_type, CHECK); | |
| 3420 JVM_END | |
| 3421 | |
| 3422 | |
| 3423 JVM_ENTRY(void, JVM_SetPrimitiveArrayElement(JNIEnv *env, jobject arr, jint index, jvalue v, unsigned char vCode)) | |
| 3424 JVMWrapper("JVM_SetPrimitiveArrayElement"); | |
| 3425 arrayOop a = check_array(env, arr, true, CHECK); | |
| 3426 assert(a->is_typeArray(), "just checking"); | |
| 3427 BasicType value_type = (BasicType) vCode; | |
| 3428 Reflection::array_set(&v, a, index, value_type, CHECK); | |
| 3429 JVM_END | |
| 3430 | |
| 3431 | |
| 3432 JVM_ENTRY(jobject, JVM_NewArray(JNIEnv *env, jclass eltClass, jint length)) | |
| 3433 JVMWrapper("JVM_NewArray"); | |
| 3434 JvmtiVMObjectAllocEventCollector oam; | |
| 3435 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3436 oop result = Reflection::reflect_new_array(element_mirror, length, CHECK_NULL); | |
| 3437 return JNIHandles::make_local(env, result); | |
| 3438 JVM_END | |
| 3439 | |
| 3440 | |
| 3441 JVM_ENTRY(jobject, JVM_NewMultiArray(JNIEnv *env, jclass eltClass, jintArray dim)) | |
| 3442 JVMWrapper("JVM_NewMultiArray"); | |
| 3443 JvmtiVMObjectAllocEventCollector oam; | |
| 3444 arrayOop dim_array = check_array(env, dim, true, CHECK_NULL); | |
| 3445 oop element_mirror = JNIHandles::resolve(eltClass); | |
| 3446 assert(dim_array->is_typeArray(), "just checking"); | |
| 3447 oop result = Reflection::reflect_new_multi_array(element_mirror, typeArrayOop(dim_array), CHECK_NULL); | |
| 3448 return JNIHandles::make_local(env, result); | |
| 3449 JVM_END | |
| 3450 | |
| 3451 | |
| 3452 // Networking library support //////////////////////////////////////////////////////////////////// | |
| 3453 | |
| 3454 JVM_LEAF(jint, JVM_InitializeSocketLibrary()) | |
| 3455 JVMWrapper("JVM_InitializeSocketLibrary"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3456 return 0; |
| 0 | 3457 JVM_END |
| 3458 | |
| 3459 | |
| 3460 JVM_LEAF(jint, JVM_Socket(jint domain, jint type, jint protocol)) | |
| 3461 JVMWrapper("JVM_Socket"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3462 return os::socket(domain, type, protocol); |
| 0 | 3463 JVM_END |
| 3464 | |
| 3465 | |
| 3466 JVM_LEAF(jint, JVM_SocketClose(jint fd)) | |
| 3467 JVMWrapper2("JVM_SocketClose (0x%x)", fd); | |
| 3468 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3469 return os::socket_close(fd); |
| 0 | 3470 JVM_END |
| 3471 | |
| 3472 | |
| 3473 JVM_LEAF(jint, JVM_SocketShutdown(jint fd, jint howto)) | |
| 3474 JVMWrapper2("JVM_SocketShutdown (0x%x)", fd); | |
| 3475 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3476 return os::socket_shutdown(fd, howto); |
| 0 | 3477 JVM_END |
| 3478 | |
| 3479 | |
| 3480 JVM_LEAF(jint, JVM_Recv(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3481 JVMWrapper2("JVM_Recv (0x%x)", fd); | |
| 3482 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3483 return os::recv(fd, buf, nBytes, flags); |
| 0 | 3484 JVM_END |
| 3485 | |
| 3486 | |
| 3487 JVM_LEAF(jint, JVM_Send(jint fd, char *buf, jint nBytes, jint flags)) | |
| 3488 JVMWrapper2("JVM_Send (0x%x)", fd); | |
| 3489 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3490 return os::send(fd, buf, nBytes, flags); |
| 0 | 3491 JVM_END |
| 3492 | |
| 3493 | |
| 3494 JVM_LEAF(jint, JVM_Timeout(int fd, long timeout)) | |
| 3495 JVMWrapper2("JVM_Timeout (0x%x)", fd); | |
| 3496 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3497 return os::timeout(fd, timeout); |
| 0 | 3498 JVM_END |
| 3499 | |
| 3500 | |
| 3501 JVM_LEAF(jint, JVM_Listen(jint fd, jint count)) | |
| 3502 JVMWrapper2("JVM_Listen (0x%x)", fd); | |
| 3503 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3504 return os::listen(fd, count); |
| 0 | 3505 JVM_END |
| 3506 | |
| 3507 | |
| 3508 JVM_LEAF(jint, JVM_Connect(jint fd, struct sockaddr *him, jint len)) | |
| 3509 JVMWrapper2("JVM_Connect (0x%x)", fd); | |
| 3510 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3511 return os::connect(fd, him, len); |
| 0 | 3512 JVM_END |
| 3513 | |
| 3514 | |
| 3515 JVM_LEAF(jint, JVM_Bind(jint fd, struct sockaddr *him, jint len)) | |
| 3516 JVMWrapper2("JVM_Bind (0x%x)", fd); | |
| 3517 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3518 return os::bind(fd, him, len); |
| 0 | 3519 JVM_END |
| 3520 | |
| 3521 | |
| 3522 JVM_LEAF(jint, JVM_Accept(jint fd, struct sockaddr *him, jint *len)) | |
| 3523 JVMWrapper2("JVM_Accept (0x%x)", fd); | |
| 3524 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3525 return os::accept(fd, him, (int *)len); |
| 0 | 3526 JVM_END |
| 3527 | |
| 3528 | |
| 3529 JVM_LEAF(jint, JVM_RecvFrom(jint fd, char *buf, int nBytes, int flags, struct sockaddr *from, int *fromlen)) | |
| 3530 JVMWrapper2("JVM_RecvFrom (0x%x)", fd); | |
| 3531 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3532 return os::recvfrom(fd, buf, nBytes, flags, from, fromlen); |
| 0 | 3533 JVM_END |
| 3534 | |
| 3535 | |
| 3536 JVM_LEAF(jint, JVM_GetSockName(jint fd, struct sockaddr *him, int *len)) | |
| 3537 JVMWrapper2("JVM_GetSockName (0x%x)", fd); | |
| 3538 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3539 return os::get_sock_name(fd, him, len); |
| 0 | 3540 JVM_END |
| 3541 | |
| 3542 | |
| 3543 JVM_LEAF(jint, JVM_SendTo(jint fd, char *buf, int len, int flags, struct sockaddr *to, int tolen)) | |
| 3544 JVMWrapper2("JVM_SendTo (0x%x)", fd); | |
| 3545 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3546 return os::sendto(fd, buf, len, flags, to, tolen); |
| 0 | 3547 JVM_END |
| 3548 | |
| 3549 | |
| 3550 JVM_LEAF(jint, JVM_SocketAvailable(jint fd, jint *pbytes)) | |
| 3551 JVMWrapper2("JVM_SocketAvailable (0x%x)", fd); | |
| 3552 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3553 return os::socket_available(fd, pbytes); |
| 0 | 3554 JVM_END |
| 3555 | |
| 3556 | |
| 3557 JVM_LEAF(jint, JVM_GetSockOpt(jint fd, int level, int optname, char *optval, int *optlen)) | |
| 3558 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
| 3559 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3560 return os::get_sock_opt(fd, level, optname, optval, optlen); |
| 0 | 3561 JVM_END |
| 3562 | |
| 3563 | |
| 3564 JVM_LEAF(jint, JVM_SetSockOpt(jint fd, int level, int optname, const char *optval, int optlen)) | |
| 3565 JVMWrapper2("JVM_GetSockOpt (0x%x)", fd); | |
| 3566 //%note jvm_r6 | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3567 return os::set_sock_opt(fd, level, optname, optval, optlen); |
| 0 | 3568 JVM_END |
| 3569 | |
| 3570 JVM_LEAF(int, JVM_GetHostName(char* name, int namelen)) | |
| 3571 JVMWrapper("JVM_GetHostName"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3572 return os::get_host_name(name, namelen); |
|
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3573 JVM_END |
| 0 | 3574 |
| 3575 // Library support /////////////////////////////////////////////////////////////////////////// | |
| 3576 | |
| 3577 JVM_ENTRY_NO_ENV(void*, JVM_LoadLibrary(const char* name)) | |
| 3578 //%note jvm_ct | |
| 3579 JVMWrapper2("JVM_LoadLibrary (%s)", name); | |
| 3580 char ebuf[1024]; | |
| 3581 void *load_result; | |
| 3582 { | |
| 3583 ThreadToNativeFromVM ttnfvm(thread); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3584 load_result = os::dll_load(name, ebuf, sizeof ebuf); |
| 0 | 3585 } |
| 3586 if (load_result == NULL) { | |
| 3587 char msg[1024]; | |
| 3588 jio_snprintf(msg, sizeof msg, "%s: %s", name, ebuf); | |
| 3589 // Since 'ebuf' may contain a string encoded using | |
| 3590 // platform encoding scheme, we need to pass | |
| 3591 // Exceptions::unsafe_to_utf8 to the new_exception method | |
| 3592 // as the last argument. See bug 6367357. | |
| 3593 Handle h_exception = | |
| 3594 Exceptions::new_exception(thread, | |
| 3595 vmSymbols::java_lang_UnsatisfiedLinkError(), | |
| 3596 msg, Exceptions::unsafe_to_utf8); | |
| 3597 | |
| 3598 THROW_HANDLE_0(h_exception); | |
| 3599 } | |
| 3600 return load_result; | |
| 3601 JVM_END | |
| 3602 | |
| 3603 | |
| 3604 JVM_LEAF(void, JVM_UnloadLibrary(void* handle)) | |
| 3605 JVMWrapper("JVM_UnloadLibrary"); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3606 os::dll_unload(handle); |
| 0 | 3607 JVM_END |
| 3608 | |
| 3609 | |
| 3610 JVM_LEAF(void*, JVM_FindLibraryEntry(void* handle, const char* name)) | |
| 3611 JVMWrapper2("JVM_FindLibraryEntry (%s)", name); | |
|
1980
828eafbd85cc
6348631: remove the use of the HPI library from Hotspot
ikrylov
parents:
1972
diff
changeset
|
3612 return os::dll_lookup(handle, name); |
| 0 | 3613 JVM_END |
| 3614 | |
| 3615 // Floating point support //////////////////////////////////////////////////////////////////// | |
| 3616 | |
| 3617 JVM_LEAF(jboolean, JVM_IsNaN(jdouble a)) | |
| 3618 JVMWrapper("JVM_IsNaN"); | |
| 3619 return g_isnan(a); | |
| 3620 JVM_END | |
| 3621 | |
| 3622 | |
| 3623 | |
| 3624 // JNI version /////////////////////////////////////////////////////////////////////////////// | |
| 3625 | |
| 3626 JVM_LEAF(jboolean, JVM_IsSupportedJNIVersion(jint version)) | |
| 3627 JVMWrapper2("JVM_IsSupportedJNIVersion (%d)", version); | |
| 3628 return Threads::is_supported_jni_version_including_1_1(version); | |
| 3629 JVM_END | |
| 3630 | |
| 3631 | |
| 3632 // String support /////////////////////////////////////////////////////////////////////////// | |
| 3633 | |
| 3634 JVM_ENTRY(jstring, JVM_InternString(JNIEnv *env, jstring str)) | |
| 3635 JVMWrapper("JVM_InternString"); | |
| 3636 JvmtiVMObjectAllocEventCollector oam; | |
| 3637 if (str == NULL) return NULL; | |
| 3638 oop string = JNIHandles::resolve_non_null(str); | |
| 3639 oop result = StringTable::intern(string, CHECK_NULL); | |
| 3640 return (jstring) JNIHandles::make_local(env, result); | |
| 3641 JVM_END | |
| 3642 | |
| 3643 | |
| 3644 // Raw monitor support ////////////////////////////////////////////////////////////////////// | |
| 3645 | |
| 3646 // The lock routine below calls lock_without_safepoint_check in order to get a raw lock | |
| 3647 // without interfering with the safepoint mechanism. The routines are not JVM_LEAF because | |
| 3648 // they might be called by non-java threads. The JVM_LEAF installs a NoHandleMark check | |
| 3649 // that only works with java threads. | |
| 3650 | |
| 3651 | |
| 3652 JNIEXPORT void* JNICALL JVM_RawMonitorCreate(void) { | |
| 3653 VM_Exit::block_if_vm_exited(); | |
| 3654 JVMWrapper("JVM_RawMonitorCreate"); | |
| 3655 return new Mutex(Mutex::native, "JVM_RawMonitorCreate"); | |
| 3656 } | |
| 3657 | |
| 3658 | |
| 3659 JNIEXPORT void JNICALL JVM_RawMonitorDestroy(void *mon) { | |
| 3660 VM_Exit::block_if_vm_exited(); | |
| 3661 JVMWrapper("JVM_RawMonitorDestroy"); | |
| 3662 delete ((Mutex*) mon); | |
| 3663 } | |
| 3664 | |
| 3665 | |
| 3666 JNIEXPORT jint JNICALL JVM_RawMonitorEnter(void *mon) { | |
| 3667 VM_Exit::block_if_vm_exited(); | |
| 3668 JVMWrapper("JVM_RawMonitorEnter"); | |
| 3669 ((Mutex*) mon)->jvm_raw_lock(); | |
| 3670 return 0; | |
| 3671 } | |
| 3672 | |
| 3673 | |
| 3674 JNIEXPORT void JNICALL JVM_RawMonitorExit(void *mon) { | |
| 3675 VM_Exit::block_if_vm_exited(); | |
| 3676 JVMWrapper("JVM_RawMonitorExit"); | |
| 3677 ((Mutex*) mon)->jvm_raw_unlock(); | |
| 3678 } | |
| 3679 | |
| 3680 | |
| 3681 // Support for Serialization | |
| 3682 | |
| 3683 typedef jfloat (JNICALL *IntBitsToFloatFn )(JNIEnv* env, jclass cb, jint value); | |
| 3684 typedef jdouble (JNICALL *LongBitsToDoubleFn)(JNIEnv* env, jclass cb, jlong value); | |
| 3685 typedef jint (JNICALL *FloatToIntBitsFn )(JNIEnv* env, jclass cb, jfloat value); | |
| 3686 typedef jlong (JNICALL *DoubleToLongBitsFn)(JNIEnv* env, jclass cb, jdouble value); | |
| 3687 | |
| 3688 static IntBitsToFloatFn int_bits_to_float_fn = NULL; | |
| 3689 static LongBitsToDoubleFn long_bits_to_double_fn = NULL; | |
| 3690 static FloatToIntBitsFn float_to_int_bits_fn = NULL; | |
| 3691 static DoubleToLongBitsFn double_to_long_bits_fn = NULL; | |
| 3692 | |
| 3693 | |
| 3694 void initialize_converter_functions() { | |
| 3695 if (JDK_Version::is_gte_jdk14x_version()) { | |
| 3696 // These functions only exist for compatibility with 1.3.1 and earlier | |
| 3697 return; | |
| 3698 } | |
| 3699 | |
| 3700 // called from universe_post_init() | |
| 3701 assert( | |
| 3702 int_bits_to_float_fn == NULL && | |
| 3703 long_bits_to_double_fn == NULL && | |
| 3704 float_to_int_bits_fn == NULL && | |
| 3705 double_to_long_bits_fn == NULL , | |
| 3706 "initialization done twice" | |
| 3707 ); | |
| 3708 // initialize | |
| 3709 int_bits_to_float_fn = CAST_TO_FN_PTR(IntBitsToFloatFn , NativeLookup::base_library_lookup("java/lang/Float" , "intBitsToFloat" , "(I)F")); | |
| 3710 long_bits_to_double_fn = CAST_TO_FN_PTR(LongBitsToDoubleFn, NativeLookup::base_library_lookup("java/lang/Double", "longBitsToDouble", "(J)D")); | |
| 3711 float_to_int_bits_fn = CAST_TO_FN_PTR(FloatToIntBitsFn , NativeLookup::base_library_lookup("java/lang/Float" , "floatToIntBits" , "(F)I")); | |
| 3712 double_to_long_bits_fn = CAST_TO_FN_PTR(DoubleToLongBitsFn, NativeLookup::base_library_lookup("java/lang/Double", "doubleToLongBits", "(D)J")); | |
| 3713 // verify | |
| 3714 assert( | |
| 3715 int_bits_to_float_fn != NULL && | |
| 3716 long_bits_to_double_fn != NULL && | |
| 3717 float_to_int_bits_fn != NULL && | |
| 3718 double_to_long_bits_fn != NULL , | |
| 3719 "initialization failed" | |
| 3720 ); | |
| 3721 } | |
| 3722 | |
| 3723 | |
| 3724 // Serialization | |
| 3725 JVM_ENTRY(void, JVM_SetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
| 3726 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
| 3727 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
| 3728 | |
| 3729 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
| 3730 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
| 3731 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
| 3732 oop o = JNIHandles::resolve(obj); | |
| 3733 | |
| 3734 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
| 3735 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 3736 } | |
| 3737 | |
| 3738 jsize nfids = fids->length(); | |
| 3739 if (nfids == 0) return; | |
| 3740 | |
| 3741 if (tcodes->length() < nfids) { | |
| 3742 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
| 3743 } | |
| 3744 | |
| 3745 jsize off = 0; | |
| 3746 /* loop through fields, setting values */ | |
| 3747 for (jsize i = 0; i < nfids; i++) { | |
| 3748 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
| 3749 int field_offset; | |
| 3750 if (fid != NULL) { | |
| 3751 // NULL is a legal value for fid, but retrieving the field offset | |
| 3752 // trigger assertion in that case | |
| 3753 field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 3754 } | |
| 3755 | |
| 3756 switch (tcodes->char_at(i)) { | |
| 3757 case 'Z': | |
| 3758 if (fid != NULL) { | |
| 3759 jboolean val = (dbuf->byte_at(off) != 0) ? JNI_TRUE : JNI_FALSE; | |
| 3760 o->bool_field_put(field_offset, val); | |
| 3761 } | |
| 3762 off++; | |
| 3763 break; | |
| 3764 | |
| 3765 case 'B': | |
| 3766 if (fid != NULL) { | |
| 3767 o->byte_field_put(field_offset, dbuf->byte_at(off)); | |
| 3768 } | |
| 3769 off++; | |
| 3770 break; | |
| 3771 | |
| 3772 case 'C': | |
| 3773 if (fid != NULL) { | |
| 3774 jchar val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
| 3775 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
| 3776 o->char_field_put(field_offset, val); | |
| 3777 } | |
| 3778 off += 2; | |
| 3779 break; | |
| 3780 | |
| 3781 case 'S': | |
| 3782 if (fid != NULL) { | |
| 3783 jshort val = ((dbuf->byte_at(off + 0) & 0xFF) << 8) | |
| 3784 + ((dbuf->byte_at(off + 1) & 0xFF) << 0); | |
| 3785 o->short_field_put(field_offset, val); | |
| 3786 } | |
| 3787 off += 2; | |
| 3788 break; | |
| 3789 | |
| 3790 case 'I': | |
| 3791 if (fid != NULL) { | |
| 3792 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
| 3793 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
| 3794 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
| 3795 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
| 3796 o->int_field_put(field_offset, ival); | |
| 3797 } | |
| 3798 off += 4; | |
| 3799 break; | |
| 3800 | |
| 3801 case 'F': | |
| 3802 if (fid != NULL) { | |
| 3803 jint ival = ((dbuf->byte_at(off + 0) & 0xFF) << 24) | |
| 3804 + ((dbuf->byte_at(off + 1) & 0xFF) << 16) | |
| 3805 + ((dbuf->byte_at(off + 2) & 0xFF) << 8) | |
| 3806 + ((dbuf->byte_at(off + 3) & 0xFF) << 0); | |
| 3807 jfloat fval = (*int_bits_to_float_fn)(env, NULL, ival); | |
| 3808 o->float_field_put(field_offset, fval); | |
| 3809 } | |
| 3810 off += 4; | |
| 3811 break; | |
| 3812 | |
| 3813 case 'J': | |
| 3814 if (fid != NULL) { | |
| 3815 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
| 3816 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
| 3817 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
| 3818 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
| 3819 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
| 3820 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
| 3821 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
| 3822 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
| 3823 o->long_field_put(field_offset, lval); | |
| 3824 } | |
| 3825 off += 8; | |
| 3826 break; | |
| 3827 | |
| 3828 case 'D': | |
| 3829 if (fid != NULL) { | |
| 3830 jlong lval = (((jlong) dbuf->byte_at(off + 0) & 0xFF) << 56) | |
| 3831 + (((jlong) dbuf->byte_at(off + 1) & 0xFF) << 48) | |
| 3832 + (((jlong) dbuf->byte_at(off + 2) & 0xFF) << 40) | |
| 3833 + (((jlong) dbuf->byte_at(off + 3) & 0xFF) << 32) | |
| 3834 + (((jlong) dbuf->byte_at(off + 4) & 0xFF) << 24) | |
| 3835 + (((jlong) dbuf->byte_at(off + 5) & 0xFF) << 16) | |
| 3836 + (((jlong) dbuf->byte_at(off + 6) & 0xFF) << 8) | |
| 3837 + (((jlong) dbuf->byte_at(off + 7) & 0xFF) << 0); | |
| 3838 jdouble dval = (*long_bits_to_double_fn)(env, NULL, lval); | |
| 3839 o->double_field_put(field_offset, dval); | |
| 3840 } | |
| 3841 off += 8; | |
| 3842 break; | |
| 3843 | |
| 3844 default: | |
| 3845 // Illegal typecode | |
| 3846 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
| 3847 } | |
| 3848 } | |
| 3849 JVM_END | |
| 3850 | |
| 3851 | |
| 3852 JVM_ENTRY(void, JVM_GetPrimitiveFieldValues(JNIEnv *env, jclass cb, jobject obj, | |
| 3853 jlongArray fieldIDs, jcharArray typecodes, jbyteArray data)) | |
| 3854 assert(!JDK_Version::is_gte_jdk14x_version(), "should only be used in 1.3.1 and earlier"); | |
| 3855 | |
| 3856 typeArrayOop tcodes = typeArrayOop(JNIHandles::resolve(typecodes)); | |
| 3857 typeArrayOop dbuf = typeArrayOop(JNIHandles::resolve(data)); | |
| 3858 typeArrayOop fids = typeArrayOop(JNIHandles::resolve(fieldIDs)); | |
| 3859 oop o = JNIHandles::resolve(obj); | |
| 3860 | |
| 3861 if (o == NULL || fids == NULL || dbuf == NULL || tcodes == NULL) { | |
| 3862 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 3863 } | |
| 3864 | |
| 3865 jsize nfids = fids->length(); | |
| 3866 if (nfids == 0) return; | |
| 3867 | |
| 3868 if (tcodes->length() < nfids) { | |
| 3869 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); | |
| 3870 } | |
| 3871 | |
| 3872 /* loop through fields, fetching values */ | |
| 3873 jsize off = 0; | |
| 3874 for (jsize i = 0; i < nfids; i++) { | |
| 3875 jfieldID fid = (jfieldID)(intptr_t) fids->long_at(i); | |
| 3876 if (fid == NULL) { | |
| 3877 THROW(vmSymbols::java_lang_NullPointerException()); | |
| 3878 } | |
| 3879 int field_offset = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 3880 | |
| 3881 switch (tcodes->char_at(i)) { | |
| 3882 case 'Z': | |
| 3883 { | |
| 3884 jboolean val = o->bool_field(field_offset); | |
| 3885 dbuf->byte_at_put(off++, (val != 0) ? 1 : 0); | |
| 3886 } | |
| 3887 break; | |
| 3888 | |
| 3889 case 'B': | |
| 3890 dbuf->byte_at_put(off++, o->byte_field(field_offset)); | |
| 3891 break; | |
| 3892 | |
| 3893 case 'C': | |
| 3894 { | |
| 3895 jchar val = o->char_field(field_offset); | |
| 3896 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 3897 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 3898 } | |
| 3899 break; | |
| 3900 | |
| 3901 case 'S': | |
| 3902 { | |
| 3903 jshort val = o->short_field(field_offset); | |
| 3904 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 3905 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 3906 } | |
| 3907 break; | |
| 3908 | |
| 3909 case 'I': | |
| 3910 { | |
| 3911 jint val = o->int_field(field_offset); | |
| 3912 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
| 3913 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
| 3914 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 3915 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 3916 } | |
| 3917 break; | |
| 3918 | |
| 3919 case 'F': | |
| 3920 { | |
| 3921 jfloat fval = o->float_field(field_offset); | |
| 3922 jint ival = (*float_to_int_bits_fn)(env, NULL, fval); | |
| 3923 dbuf->byte_at_put(off++, (ival >> 24) & 0xFF); | |
| 3924 dbuf->byte_at_put(off++, (ival >> 16) & 0xFF); | |
| 3925 dbuf->byte_at_put(off++, (ival >> 8) & 0xFF); | |
| 3926 dbuf->byte_at_put(off++, (ival >> 0) & 0xFF); | |
| 3927 } | |
| 3928 break; | |
| 3929 | |
| 3930 case 'J': | |
| 3931 { | |
| 3932 jlong val = o->long_field(field_offset); | |
| 3933 dbuf->byte_at_put(off++, (val >> 56) & 0xFF); | |
| 3934 dbuf->byte_at_put(off++, (val >> 48) & 0xFF); | |
| 3935 dbuf->byte_at_put(off++, (val >> 40) & 0xFF); | |
| 3936 dbuf->byte_at_put(off++, (val >> 32) & 0xFF); | |
| 3937 dbuf->byte_at_put(off++, (val >> 24) & 0xFF); | |
| 3938 dbuf->byte_at_put(off++, (val >> 16) & 0xFF); | |
| 3939 dbuf->byte_at_put(off++, (val >> 8) & 0xFF); | |
| 3940 dbuf->byte_at_put(off++, (val >> 0) & 0xFF); | |
| 3941 } | |
| 3942 break; | |
| 3943 | |
| 3944 case 'D': | |
| 3945 { | |
| 3946 jdouble dval = o->double_field(field_offset); | |
| 3947 jlong lval = (*double_to_long_bits_fn)(env, NULL, dval); | |
| 3948 dbuf->byte_at_put(off++, (lval >> 56) & 0xFF); | |
| 3949 dbuf->byte_at_put(off++, (lval >> 48) & 0xFF); | |
| 3950 dbuf->byte_at_put(off++, (lval >> 40) & 0xFF); | |
| 3951 dbuf->byte_at_put(off++, (lval >> 32) & 0xFF); | |
| 3952 dbuf->byte_at_put(off++, (lval >> 24) & 0xFF); | |
| 3953 dbuf->byte_at_put(off++, (lval >> 16) & 0xFF); | |
| 3954 dbuf->byte_at_put(off++, (lval >> 8) & 0xFF); | |
| 3955 dbuf->byte_at_put(off++, (lval >> 0) & 0xFF); | |
| 3956 } | |
| 3957 break; | |
| 3958 | |
| 3959 default: | |
| 3960 // Illegal typecode | |
| 3961 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "illegal typecode"); | |
| 3962 } | |
| 3963 } | |
| 3964 JVM_END | |
| 3965 | |
| 3966 | |
| 3967 // Shared JNI/JVM entry points ////////////////////////////////////////////////////////////// | |
| 3968 | |
|
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
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2162
diff
changeset
|
3969 jclass find_class_from_class_loader(JNIEnv* env, Symbol* name, jboolean init, Handle loader, Handle protection_domain, jboolean throwError, TRAPS) { |
| 0 | 3970 // Security Note: |
| 3971 // The Java level wrapper will perform the necessary security check allowing | |
| 3972 // us to pass the NULL as the initiating class loader. | |
| 3973 klassOop klass = SystemDictionary::resolve_or_fail(name, loader, protection_domain, throwError != 0, CHECK_NULL); | |
|
878
abe076e3636f
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875
diff
changeset
|
3974 |
| 0 | 3975 KlassHandle klass_handle(THREAD, klass); |
| 3976 // Check if we should initialize the class | |
| 3977 if (init && klass_handle->oop_is_instance()) { | |
| 3978 klass_handle->initialize(CHECK_NULL); | |
| 3979 } | |
| 3980 return (jclass) JNIHandles::make_local(env, klass_handle->java_mirror()); | |
| 3981 } | |
| 3982 | |
| 3983 | |
| 3984 // Internal SQE debugging support /////////////////////////////////////////////////////////// | |
| 3985 | |
| 3986 #ifndef PRODUCT | |
| 3987 | |
| 3988 extern "C" { | |
| 3989 JNIEXPORT jboolean JNICALL JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get); | |
| 3990 JNIEXPORT jboolean JNICALL JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get); | |
| 3991 JNIEXPORT void JNICALL JVM_VMBreakPoint(JNIEnv *env, jobject obj); | |
| 3992 } | |
| 3993 | |
| 3994 JVM_LEAF(jboolean, JVM_AccessVMBooleanFlag(const char* name, jboolean* value, jboolean is_get)) | |
| 3995 JVMWrapper("JVM_AccessBoolVMFlag"); | |
| 3996 return is_get ? CommandLineFlags::boolAt((char*) name, (bool*) value) : CommandLineFlags::boolAtPut((char*) name, (bool*) value, INTERNAL); | |
| 3997 JVM_END | |
| 3998 | |
| 3999 JVM_LEAF(jboolean, JVM_AccessVMIntFlag(const char* name, jint* value, jboolean is_get)) | |
| 4000 JVMWrapper("JVM_AccessVMIntFlag"); | |
| 4001 intx v; | |
| 4002 jboolean result = is_get ? CommandLineFlags::intxAt((char*) name, &v) : CommandLineFlags::intxAtPut((char*) name, &v, INTERNAL); | |
| 4003 *value = (jint)v; | |
| 4004 return result; | |
| 4005 JVM_END | |
| 4006 | |
| 4007 | |
| 4008 JVM_ENTRY(void, JVM_VMBreakPoint(JNIEnv *env, jobject obj)) | |
| 4009 JVMWrapper("JVM_VMBreakPoint"); | |
| 4010 oop the_obj = JNIHandles::resolve(obj); | |
| 4011 BREAKPOINT; | |
| 4012 JVM_END | |
| 4013 | |
| 4014 | |
| 4015 #endif | |
| 4016 | |
| 4017 | |
| 4018 // Method /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4019 | |
| 4020 JVM_ENTRY(jobject, JVM_InvokeMethod(JNIEnv *env, jobject method, jobject obj, jobjectArray args0)) | |
| 4021 JVMWrapper("JVM_InvokeMethod"); | |
| 4022 Handle method_handle; | |
| 4023 if (thread->stack_available((address) &method_handle) >= JVMInvokeMethodSlack) { | |
| 4024 method_handle = Handle(THREAD, JNIHandles::resolve(method)); | |
| 4025 Handle receiver(THREAD, JNIHandles::resolve(obj)); | |
| 4026 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4027 oop result = Reflection::invoke_method(method_handle(), receiver, args, CHECK_NULL); | |
| 4028 jobject res = JNIHandles::make_local(env, result); | |
| 4029 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4030 oop ret_type = java_lang_reflect_Method::return_type(method_handle()); | |
| 4031 assert(ret_type != NULL, "sanity check: ret_type oop must not be NULL!"); | |
| 4032 if (java_lang_Class::is_primitive(ret_type)) { | |
| 4033 // Only for primitive type vm allocates memory for java object. | |
| 4034 // See box() method. | |
| 4035 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4036 } | |
| 4037 } | |
| 4038 return res; | |
| 4039 } else { | |
| 4040 THROW_0(vmSymbols::java_lang_StackOverflowError()); | |
| 4041 } | |
| 4042 JVM_END | |
| 4043 | |
| 4044 | |
| 4045 JVM_ENTRY(jobject, JVM_NewInstanceFromConstructor(JNIEnv *env, jobject c, jobjectArray args0)) | |
| 4046 JVMWrapper("JVM_NewInstanceFromConstructor"); | |
| 4047 oop constructor_mirror = JNIHandles::resolve(c); | |
| 4048 objArrayHandle args(THREAD, objArrayOop(JNIHandles::resolve(args0))); | |
| 4049 oop result = Reflection::invoke_constructor(constructor_mirror, args, CHECK_NULL); | |
| 4050 jobject res = JNIHandles::make_local(env, result); | |
| 4051 if (JvmtiExport::should_post_vm_object_alloc()) { | |
| 4052 JvmtiExport::post_vm_object_alloc(JavaThread::current(), result); | |
| 4053 } | |
| 4054 return res; | |
| 4055 JVM_END | |
| 4056 | |
| 4057 // Atomic /////////////////////////////////////////////////////////////////////////////////////////// | |
| 4058 | |
| 4059 JVM_LEAF(jboolean, JVM_SupportsCX8()) | |
| 4060 JVMWrapper("JVM_SupportsCX8"); | |
| 4061 return VM_Version::supports_cx8(); | |
| 4062 JVM_END | |
| 4063 | |
| 4064 | |
| 4065 JVM_ENTRY(jboolean, JVM_CX8Field(JNIEnv *env, jobject obj, jfieldID fid, jlong oldVal, jlong newVal)) | |
| 4066 JVMWrapper("JVM_CX8Field"); | |
| 4067 jlong res; | |
| 4068 oop o = JNIHandles::resolve(obj); | |
| 4069 intptr_t fldOffs = jfieldIDWorkaround::from_instance_jfieldID(o->klass(), fid); | |
| 4070 volatile jlong* addr = (volatile jlong*)((address)o + fldOffs); | |
| 4071 | |
| 4072 assert(VM_Version::supports_cx8(), "cx8 not supported"); | |
| 4073 res = Atomic::cmpxchg(newVal, addr, oldVal); | |
| 4074 | |
| 4075 return res == oldVal; | |
| 4076 JVM_END | |
| 4077 | |
|
116
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|
4078 // DTrace /////////////////////////////////////////////////////////////////// |
|
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0
diff
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|
4079 |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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0
diff
changeset
|
4080 JVM_ENTRY(jint, JVM_DTraceGetVersion(JNIEnv* env)) |
|
018d5b58dd4f
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0
diff
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|
4081 JVMWrapper("JVM_DTraceGetVersion"); |
|
018d5b58dd4f
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parents:
0
diff
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|
4082 return (jint)JVM_TRACING_DTRACE_VERSION; |
|
018d5b58dd4f
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kamg
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0
diff
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|
4083 JVM_END |
|
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
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0
diff
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|
4084 |
|
018d5b58dd4f
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0
diff
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|
4085 JVM_ENTRY(jlong,JVM_DTraceActivate( |
|
018d5b58dd4f
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0
diff
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|
4086 JNIEnv* env, jint version, jstring module_name, jint providers_count, |
|
018d5b58dd4f
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0
diff
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|
4087 JVM_DTraceProvider* providers)) |
|
018d5b58dd4f
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0
diff
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|
4088 JVMWrapper("JVM_DTraceActivate"); |
|
018d5b58dd4f
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0
diff
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|
4089 return DTraceJSDT::activate( |
|
018d5b58dd4f
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0
diff
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|
4090 version, module_name, providers_count, providers, CHECK_0); |
|
018d5b58dd4f
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0
diff
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|
4091 JVM_END |
|
018d5b58dd4f
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0
diff
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|
4092 |
|
018d5b58dd4f
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0
diff
changeset
|
4093 JVM_ENTRY(jboolean,JVM_DTraceIsProbeEnabled(JNIEnv* env, jmethodID method)) |
|
018d5b58dd4f
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0
diff
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|
4094 JVMWrapper("JVM_DTraceIsProbeEnabled"); |
|
018d5b58dd4f
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0
diff
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|
4095 return DTraceJSDT::is_probe_enabled(method); |
|
018d5b58dd4f
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0
diff
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|
4096 JVM_END |
|
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diff
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|
4097 |
|
018d5b58dd4f
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diff
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|
4098 JVM_ENTRY(void,JVM_DTraceDispose(JNIEnv* env, jlong handle)) |
|
018d5b58dd4f
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0
diff
changeset
|
4099 JVMWrapper("JVM_DTraceDispose"); |
|
018d5b58dd4f
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0
diff
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|
4100 DTraceJSDT::dispose(handle); |
|
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0
diff
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|
4101 JVM_END |
|
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diff
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|
4102 |
|
018d5b58dd4f
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diff
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|
4103 JVM_ENTRY(jboolean,JVM_DTraceIsSupported(JNIEnv* env)) |
|
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diff
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|
4104 JVMWrapper("JVM_DTraceIsSupported"); |
|
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diff
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|
4105 return DTraceJSDT::is_supported(); |
|
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0
diff
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|
4106 JVM_END |
|
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|
4107 |
| 0 | 4108 // Returns an array of all live Thread objects (VM internal JavaThreads, |
| 4109 // jvmti agent threads, and JNI attaching threads are skipped) | |
| 4110 // See CR 6404306 regarding JNI attaching threads | |
| 4111 JVM_ENTRY(jobjectArray, JVM_GetAllThreads(JNIEnv *env, jclass dummy)) | |
| 4112 ResourceMark rm(THREAD); | |
| 4113 ThreadsListEnumerator tle(THREAD, false, false); | |
| 4114 JvmtiVMObjectAllocEventCollector oam; | |
| 4115 | |
| 4116 int num_threads = tle.num_threads(); | |
| 1142 | 4117 objArrayOop r = oopFactory::new_objArray(SystemDictionary::Thread_klass(), num_threads, CHECK_NULL); |
| 0 | 4118 objArrayHandle threads_ah(THREAD, r); |
| 4119 | |
| 4120 for (int i = 0; i < num_threads; i++) { | |
| 4121 Handle h = tle.get_threadObj(i); | |
| 4122 threads_ah->obj_at_put(i, h()); | |
| 4123 } | |
| 4124 | |
| 4125 return (jobjectArray) JNIHandles::make_local(env, threads_ah()); | |
| 4126 JVM_END | |
| 4127 | |
| 4128 | |
| 4129 // Support for java.lang.Thread.getStackTrace() and getAllStackTraces() methods | |
| 4130 // Return StackTraceElement[][], each element is the stack trace of a thread in | |
| 4131 // the corresponding entry in the given threads array | |
| 4132 JVM_ENTRY(jobjectArray, JVM_DumpThreads(JNIEnv *env, jclass threadClass, jobjectArray threads)) | |
| 4133 JVMWrapper("JVM_DumpThreads"); | |
| 4134 JvmtiVMObjectAllocEventCollector oam; | |
| 4135 | |
| 4136 // Check if threads is null | |
| 4137 if (threads == NULL) { | |
| 4138 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4139 } | |
| 4140 | |
| 4141 objArrayOop a = objArrayOop(JNIHandles::resolve_non_null(threads)); | |
| 4142 objArrayHandle ah(THREAD, a); | |
| 4143 int num_threads = ah->length(); | |
| 4144 // check if threads is non-empty array | |
| 4145 if (num_threads == 0) { | |
| 4146 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); | |
| 4147 } | |
| 4148 | |
| 4149 // check if threads is not an array of objects of Thread class | |
| 4150 klassOop k = objArrayKlass::cast(ah->klass())->element_klass(); | |
| 1142 | 4151 if (k != SystemDictionary::Thread_klass()) { |
| 0 | 4152 THROW_(vmSymbols::java_lang_IllegalArgumentException(), 0); |
| 4153 } | |
| 4154 | |
| 4155 ResourceMark rm(THREAD); | |
| 4156 | |
| 4157 GrowableArray<instanceHandle>* thread_handle_array = new GrowableArray<instanceHandle>(num_threads); | |
| 4158 for (int i = 0; i < num_threads; i++) { | |
| 4159 oop thread_obj = ah->obj_at(i); | |
| 4160 instanceHandle h(THREAD, (instanceOop) thread_obj); | |
| 4161 thread_handle_array->append(h); | |
| 4162 } | |
| 4163 | |
| 4164 Handle stacktraces = ThreadService::dump_stack_traces(thread_handle_array, num_threads, CHECK_NULL); | |
| 4165 return (jobjectArray)JNIHandles::make_local(env, stacktraces()); | |
| 4166 | |
| 4167 JVM_END | |
| 4168 | |
| 4169 // JVM monitoring and management support | |
| 4170 JVM_ENTRY_NO_ENV(void*, JVM_GetManagement(jint version)) | |
| 4171 return Management::get_jmm_interface(version); | |
| 4172 JVM_END | |
| 4173 | |
| 4174 // com.sun.tools.attach.VirtualMachine agent properties support | |
| 4175 // | |
| 4176 // Initialize the agent properties with the properties maintained in the VM | |
| 4177 JVM_ENTRY(jobject, JVM_InitAgentProperties(JNIEnv *env, jobject properties)) | |
| 4178 JVMWrapper("JVM_InitAgentProperties"); | |
| 4179 ResourceMark rm; | |
| 4180 | |
| 4181 Handle props(THREAD, JNIHandles::resolve_non_null(properties)); | |
| 4182 | |
| 4183 PUTPROP(props, "sun.java.command", Arguments::java_command()); | |
| 4184 PUTPROP(props, "sun.jvm.flags", Arguments::jvm_flags()); | |
| 4185 PUTPROP(props, "sun.jvm.args", Arguments::jvm_args()); | |
| 4186 return properties; | |
| 4187 JVM_END | |
| 4188 | |
| 4189 JVM_ENTRY(jobjectArray, JVM_GetEnclosingMethodInfo(JNIEnv *env, jclass ofClass)) | |
| 4190 { | |
| 4191 JVMWrapper("JVM_GetEnclosingMethodInfo"); | |
| 4192 JvmtiVMObjectAllocEventCollector oam; | |
| 4193 | |
| 4194 if (ofClass == NULL) { | |
| 4195 return NULL; | |
| 4196 } | |
| 4197 Handle mirror(THREAD, JNIHandles::resolve_non_null(ofClass)); | |
| 4198 // Special handling for primitive objects | |
| 4199 if (java_lang_Class::is_primitive(mirror())) { | |
| 4200 return NULL; | |
| 4201 } | |
| 4202 klassOop k = java_lang_Class::as_klassOop(mirror()); | |
| 4203 if (!Klass::cast(k)->oop_is_instance()) { | |
| 4204 return NULL; | |
| 4205 } | |
| 4206 instanceKlassHandle ik_h(THREAD, k); | |
| 4207 int encl_method_class_idx = ik_h->enclosing_method_class_index(); | |
| 4208 if (encl_method_class_idx == 0) { | |
| 4209 return NULL; | |
| 4210 } | |
| 1142 | 4211 objArrayOop dest_o = oopFactory::new_objArray(SystemDictionary::Object_klass(), 3, CHECK_NULL); |
| 0 | 4212 objArrayHandle dest(THREAD, dest_o); |
| 4213 klassOop enc_k = ik_h->constants()->klass_at(encl_method_class_idx, CHECK_NULL); | |
| 4214 dest->obj_at_put(0, Klass::cast(enc_k)->java_mirror()); | |
| 4215 int encl_method_method_idx = ik_h->enclosing_method_method_index(); | |
| 4216 if (encl_method_method_idx != 0) { | |
|
2177
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2162
diff
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|
4217 Symbol* sym = ik_h->constants()->symbol_at( |
| 0 | 4218 extract_low_short_from_int( |
| 4219 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4220 Handle str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4221 dest->obj_at_put(1, str()); | |
|
2177
3582bf76420e
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changeset
|
4222 sym = ik_h->constants()->symbol_at( |
| 0 | 4223 extract_high_short_from_int( |
| 4224 ik_h->constants()->name_and_type_at(encl_method_method_idx))); | |
| 4225 str = java_lang_String::create_from_symbol(sym, CHECK_NULL); | |
| 4226 dest->obj_at_put(2, str()); | |
| 4227 } | |
| 4228 return (jobjectArray) JNIHandles::make_local(dest()); | |
| 4229 } | |
| 4230 JVM_END | |
| 4231 | |
| 4232 JVM_ENTRY(jintArray, JVM_GetThreadStateValues(JNIEnv* env, | |
| 4233 jint javaThreadState)) | |
| 4234 { | |
| 4235 // If new thread states are added in future JDK and VM versions, | |
| 4236 // this should check if the JDK version is compatible with thread | |
| 4237 // states supported by the VM. Return NULL if not compatible. | |
| 4238 // | |
| 4239 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4240 // to the Java thread state that the JDK supports. | |
| 4241 // | |
| 4242 | |
| 4243 typeArrayHandle values_h; | |
| 4244 switch (javaThreadState) { | |
| 4245 case JAVA_THREAD_STATE_NEW : { | |
| 4246 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4247 values_h = typeArrayHandle(THREAD, r); | |
| 4248 values_h->int_at_put(0, java_lang_Thread::NEW); | |
| 4249 break; | |
| 4250 } | |
| 4251 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4252 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4253 values_h = typeArrayHandle(THREAD, r); | |
| 4254 values_h->int_at_put(0, java_lang_Thread::RUNNABLE); | |
| 4255 break; | |
| 4256 } | |
| 4257 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4258 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4259 values_h = typeArrayHandle(THREAD, r); | |
| 4260 values_h->int_at_put(0, java_lang_Thread::BLOCKED_ON_MONITOR_ENTER); | |
| 4261 break; | |
| 4262 } | |
| 4263 case JAVA_THREAD_STATE_WAITING : { | |
| 4264 typeArrayOop r = oopFactory::new_typeArray(T_INT, 2, CHECK_NULL); | |
| 4265 values_h = typeArrayHandle(THREAD, r); | |
| 4266 values_h->int_at_put(0, java_lang_Thread::IN_OBJECT_WAIT); | |
| 4267 values_h->int_at_put(1, java_lang_Thread::PARKED); | |
| 4268 break; | |
| 4269 } | |
| 4270 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4271 typeArrayOop r = oopFactory::new_typeArray(T_INT, 3, CHECK_NULL); | |
| 4272 values_h = typeArrayHandle(THREAD, r); | |
| 4273 values_h->int_at_put(0, java_lang_Thread::SLEEPING); | |
| 4274 values_h->int_at_put(1, java_lang_Thread::IN_OBJECT_WAIT_TIMED); | |
| 4275 values_h->int_at_put(2, java_lang_Thread::PARKED_TIMED); | |
| 4276 break; | |
| 4277 } | |
| 4278 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4279 typeArrayOop r = oopFactory::new_typeArray(T_INT, 1, CHECK_NULL); | |
| 4280 values_h = typeArrayHandle(THREAD, r); | |
| 4281 values_h->int_at_put(0, java_lang_Thread::TERMINATED); | |
| 4282 break; | |
| 4283 } | |
| 4284 default: | |
| 4285 // Unknown state - probably incompatible JDK version | |
| 4286 return NULL; | |
| 4287 } | |
| 4288 | |
| 4289 return (jintArray) JNIHandles::make_local(env, values_h()); | |
| 4290 } | |
| 4291 JVM_END | |
| 4292 | |
| 4293 | |
| 4294 JVM_ENTRY(jobjectArray, JVM_GetThreadStateNames(JNIEnv* env, | |
| 4295 jint javaThreadState, | |
| 4296 jintArray values)) | |
| 4297 { | |
| 4298 // If new thread states are added in future JDK and VM versions, | |
| 4299 // this should check if the JDK version is compatible with thread | |
| 4300 // states supported by the VM. Return NULL if not compatible. | |
| 4301 // | |
| 4302 // This function must map the VM java_lang_Thread::ThreadStatus | |
| 4303 // to the Java thread state that the JDK supports. | |
| 4304 // | |
| 4305 | |
| 4306 ResourceMark rm; | |
| 4307 | |
| 4308 // Check if threads is null | |
| 4309 if (values == NULL) { | |
| 4310 THROW_(vmSymbols::java_lang_NullPointerException(), 0); | |
| 4311 } | |
| 4312 | |
| 4313 typeArrayOop v = typeArrayOop(JNIHandles::resolve_non_null(values)); | |
| 4314 typeArrayHandle values_h(THREAD, v); | |
| 4315 | |
| 4316 objArrayHandle names_h; | |
| 4317 switch (javaThreadState) { | |
| 4318 case JAVA_THREAD_STATE_NEW : { | |
| 4319 assert(values_h->length() == 1 && | |
| 4320 values_h->int_at(0) == java_lang_Thread::NEW, | |
| 4321 "Invalid threadStatus value"); | |
| 4322 | |
| 1142 | 4323 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4324 1, /* only 1 substate */ |
| 4325 CHECK_NULL); | |
| 4326 names_h = objArrayHandle(THREAD, r); | |
| 4327 Handle name = java_lang_String::create_from_str("NEW", CHECK_NULL); | |
| 4328 names_h->obj_at_put(0, name()); | |
| 4329 break; | |
| 4330 } | |
| 4331 case JAVA_THREAD_STATE_RUNNABLE : { | |
| 4332 assert(values_h->length() == 1 && | |
| 4333 values_h->int_at(0) == java_lang_Thread::RUNNABLE, | |
| 4334 "Invalid threadStatus value"); | |
| 4335 | |
| 1142 | 4336 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4337 1, /* only 1 substate */ |
| 4338 CHECK_NULL); | |
| 4339 names_h = objArrayHandle(THREAD, r); | |
| 4340 Handle name = java_lang_String::create_from_str("RUNNABLE", CHECK_NULL); | |
| 4341 names_h->obj_at_put(0, name()); | |
| 4342 break; | |
| 4343 } | |
| 4344 case JAVA_THREAD_STATE_BLOCKED : { | |
| 4345 assert(values_h->length() == 1 && | |
| 4346 values_h->int_at(0) == java_lang_Thread::BLOCKED_ON_MONITOR_ENTER, | |
| 4347 "Invalid threadStatus value"); | |
| 4348 | |
| 1142 | 4349 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4350 1, /* only 1 substate */ |
| 4351 CHECK_NULL); | |
| 4352 names_h = objArrayHandle(THREAD, r); | |
| 4353 Handle name = java_lang_String::create_from_str("BLOCKED", CHECK_NULL); | |
| 4354 names_h->obj_at_put(0, name()); | |
| 4355 break; | |
| 4356 } | |
| 4357 case JAVA_THREAD_STATE_WAITING : { | |
| 4358 assert(values_h->length() == 2 && | |
| 4359 values_h->int_at(0) == java_lang_Thread::IN_OBJECT_WAIT && | |
| 4360 values_h->int_at(1) == java_lang_Thread::PARKED, | |
| 4361 "Invalid threadStatus value"); | |
| 1142 | 4362 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4363 2, /* number of substates */ |
| 4364 CHECK_NULL); | |
| 4365 names_h = objArrayHandle(THREAD, r); | |
| 4366 Handle name0 = java_lang_String::create_from_str("WAITING.OBJECT_WAIT", | |
| 4367 CHECK_NULL); | |
| 4368 Handle name1 = java_lang_String::create_from_str("WAITING.PARKED", | |
| 4369 CHECK_NULL); | |
| 4370 names_h->obj_at_put(0, name0()); | |
| 4371 names_h->obj_at_put(1, name1()); | |
| 4372 break; | |
| 4373 } | |
| 4374 case JAVA_THREAD_STATE_TIMED_WAITING : { | |
| 4375 assert(values_h->length() == 3 && | |
| 4376 values_h->int_at(0) == java_lang_Thread::SLEEPING && | |
| 4377 values_h->int_at(1) == java_lang_Thread::IN_OBJECT_WAIT_TIMED && | |
| 4378 values_h->int_at(2) == java_lang_Thread::PARKED_TIMED, | |
| 4379 "Invalid threadStatus value"); | |
| 1142 | 4380 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4381 3, /* number of substates */ |
| 4382 CHECK_NULL); | |
| 4383 names_h = objArrayHandle(THREAD, r); | |
| 4384 Handle name0 = java_lang_String::create_from_str("TIMED_WAITING.SLEEPING", | |
| 4385 CHECK_NULL); | |
| 4386 Handle name1 = java_lang_String::create_from_str("TIMED_WAITING.OBJECT_WAIT", | |
| 4387 CHECK_NULL); | |
| 4388 Handle name2 = java_lang_String::create_from_str("TIMED_WAITING.PARKED", | |
| 4389 CHECK_NULL); | |
| 4390 names_h->obj_at_put(0, name0()); | |
| 4391 names_h->obj_at_put(1, name1()); | |
| 4392 names_h->obj_at_put(2, name2()); | |
| 4393 break; | |
| 4394 } | |
| 4395 case JAVA_THREAD_STATE_TERMINATED : { | |
| 4396 assert(values_h->length() == 1 && | |
| 4397 values_h->int_at(0) == java_lang_Thread::TERMINATED, | |
| 4398 "Invalid threadStatus value"); | |
| 1142 | 4399 objArrayOop r = oopFactory::new_objArray(SystemDictionary::String_klass(), |
| 0 | 4400 1, /* only 1 substate */ |
| 4401 CHECK_NULL); | |
| 4402 names_h = objArrayHandle(THREAD, r); | |
| 4403 Handle name = java_lang_String::create_from_str("TERMINATED", CHECK_NULL); | |
| 4404 names_h->obj_at_put(0, name()); | |
| 4405 break; | |
| 4406 } | |
| 4407 default: | |
| 4408 // Unknown state - probably incompatible JDK version | |
| 4409 return NULL; | |
| 4410 } | |
| 4411 return (jobjectArray) JNIHandles::make_local(env, names_h()); | |
| 4412 } | |
| 4413 JVM_END | |
| 4414 | |
| 4415 JVM_ENTRY(void, JVM_GetVersionInfo(JNIEnv* env, jvm_version_info* info, size_t info_size)) | |
| 4416 { | |
| 4417 memset(info, 0, sizeof(info_size)); | |
| 4418 | |
| 4419 info->jvm_version = Abstract_VM_Version::jvm_version(); | |
| 4420 info->update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4421 info->special_update_version = 0; /* 0 in HotSpot Express VM */ | |
| 4422 | |
| 4423 // when we add a new capability in the jvm_version_info struct, we should also | |
| 4424 // consider to expose this new capability in the sun.rt.jvmCapabilities jvmstat | |
| 4425 // counter defined in runtimeService.cpp. | |
| 4426 info->is_attachable = AttachListener::is_attach_supported(); | |
| 4427 #ifdef KERNEL | |
| 4428 info->is_kernel_jvm = 1; // true; | |
| 4429 #else // KERNEL | |
| 4430 info->is_kernel_jvm = 0; // false; | |
| 4431 #endif // KERNEL | |
| 4432 } | |
| 4433 JVM_END |